1 /*
2  * Copyright (c) 2017 Martin Pieuchot <mpi@openbsd.org>
3  * Copyright (c) 2018, 2019, 2020 Stefan Sperling <stsp@openbsd.org>
4  * Copyright (c) 2020 Ori Bernstein <ori@openbsd.org>
5  *
6  * Permission to use, copy, modify, and distribute this software for any
7  * purpose with or without fee is hereby granted, provided that the above
8  * copyright notice and this permission notice appear in all copies.
9  *
10  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17  */
18 
19 #include <sys/queue.h>
20 #include <sys/time.h>
21 #include <sys/types.h>
22 #include <sys/stat.h>
23 #include <sys/wait.h>
24 
25 #include <err.h>
26 #include <errno.h>
27 #include <fcntl.h>
28 #include <limits.h>
29 #include <locale.h>
30 #include <ctype.h>
31 #include <sha1.h>
32 #include <sha2.h>
33 #include <signal.h>
34 #include <stdio.h>
35 #include <stdlib.h>
36 #include <string.h>
37 #include <unistd.h>
38 #include <libgen.h>
39 #include <time.h>
40 #include <paths.h>
41 #include <regex.h>
42 #include <getopt.h>
43 #include <util.h>
44 
45 #include "got_version.h"
46 #include "got_error.h"
47 #include "got_object.h"
48 #include "got_reference.h"
49 #include "got_repository.h"
50 #include "got_path.h"
51 #include "got_cancel.h"
52 #include "got_worktree.h"
53 #include "got_diff.h"
54 #include "got_commit_graph.h"
55 #include "got_fetch.h"
56 #include "got_send.h"
57 #include "got_blame.h"
58 #include "got_privsep.h"
59 #include "got_opentemp.h"
60 #include "got_gotconfig.h"
61 #include "got_dial.h"
62 #include "got_patch.h"
63 #include "got_sigs.h"
64 #include "got_date.h"
65 
66 #ifndef nitems
67 #define nitems(_a)	(sizeof((_a)) / sizeof((_a)[0]))
68 #endif
69 
70 static volatile sig_atomic_t sigint_received;
71 static volatile sig_atomic_t sigpipe_received;
72 
73 static void
74 catch_sigint(int signo)
75 {
76 	sigint_received = 1;
77 }
78 
79 static void
80 catch_sigpipe(int signo)
81 {
82 	sigpipe_received = 1;
83 }
84 
85 
86 struct got_cmd {
87 	const char	*cmd_name;
88 	const struct got_error *(*cmd_main)(int, char *[]);
89 	void		(*cmd_usage)(void);
90 	const char	*cmd_alias;
91 };
92 
93 __dead static void	usage(int, int);
94 __dead static void	usage_import(void);
95 __dead static void	usage_clone(void);
96 __dead static void	usage_fetch(void);
97 __dead static void	usage_checkout(void);
98 __dead static void	usage_update(void);
99 __dead static void	usage_log(void);
100 __dead static void	usage_diff(void);
101 __dead static void	usage_blame(void);
102 __dead static void	usage_tree(void);
103 __dead static void	usage_status(void);
104 __dead static void	usage_ref(void);
105 __dead static void	usage_branch(void);
106 __dead static void	usage_tag(void);
107 __dead static void	usage_add(void);
108 __dead static void	usage_remove(void);
109 __dead static void	usage_patch(void);
110 __dead static void	usage_revert(void);
111 __dead static void	usage_commit(void);
112 __dead static void	usage_send(void);
113 __dead static void	usage_cherrypick(void);
114 __dead static void	usage_backout(void);
115 __dead static void	usage_rebase(void);
116 __dead static void	usage_histedit(void);
117 __dead static void	usage_integrate(void);
118 __dead static void	usage_merge(void);
119 __dead static void	usage_stage(void);
120 __dead static void	usage_unstage(void);
121 __dead static void	usage_cat(void);
122 __dead static void	usage_info(void);
123 
124 static const struct got_error*		cmd_import(int, char *[]);
125 static const struct got_error*		cmd_clone(int, char *[]);
126 static const struct got_error*		cmd_fetch(int, char *[]);
127 static const struct got_error*		cmd_checkout(int, char *[]);
128 static const struct got_error*		cmd_update(int, char *[]);
129 static const struct got_error*		cmd_log(int, char *[]);
130 static const struct got_error*		cmd_diff(int, char *[]);
131 static const struct got_error*		cmd_blame(int, char *[]);
132 static const struct got_error*		cmd_tree(int, char *[]);
133 static const struct got_error*		cmd_status(int, char *[]);
134 static const struct got_error*		cmd_ref(int, char *[]);
135 static const struct got_error*		cmd_branch(int, char *[]);
136 static const struct got_error*		cmd_tag(int, char *[]);
137 static const struct got_error*		cmd_add(int, char *[]);
138 static const struct got_error*		cmd_remove(int, char *[]);
139 static const struct got_error*		cmd_patch(int, char *[]);
140 static const struct got_error*		cmd_revert(int, char *[]);
141 static const struct got_error*		cmd_commit(int, char *[]);
142 static const struct got_error*		cmd_send(int, char *[]);
143 static const struct got_error*		cmd_cherrypick(int, char *[]);
144 static const struct got_error*		cmd_backout(int, char *[]);
145 static const struct got_error*		cmd_rebase(int, char *[]);
146 static const struct got_error*		cmd_histedit(int, char *[]);
147 static const struct got_error*		cmd_integrate(int, char *[]);
148 static const struct got_error*		cmd_merge(int, char *[]);
149 static const struct got_error*		cmd_stage(int, char *[]);
150 static const struct got_error*		cmd_unstage(int, char *[]);
151 static const struct got_error*		cmd_cat(int, char *[]);
152 static const struct got_error*		cmd_info(int, char *[]);
153 
154 static const struct got_cmd got_commands[] = {
155 	{ "import",	cmd_import,	usage_import,	"im" },
156 	{ "clone",	cmd_clone,	usage_clone,	"cl" },
157 	{ "fetch",	cmd_fetch,	usage_fetch,	"fe" },
158 	{ "checkout",	cmd_checkout,	usage_checkout,	"co" },
159 	{ "update",	cmd_update,	usage_update,	"up" },
160 	{ "log",	cmd_log,	usage_log,	"" },
161 	{ "diff",	cmd_diff,	usage_diff,	"di" },
162 	{ "blame",	cmd_blame,	usage_blame,	"bl" },
163 	{ "tree",	cmd_tree,	usage_tree,	"tr" },
164 	{ "status",	cmd_status,	usage_status,	"st" },
165 	{ "ref",	cmd_ref,	usage_ref,	"" },
166 	{ "branch",	cmd_branch,	usage_branch,	"br" },
167 	{ "tag",	cmd_tag,	usage_tag,	"" },
168 	{ "add",	cmd_add,	usage_add,	"" },
169 	{ "remove",	cmd_remove,	usage_remove,	"rm" },
170 	{ "patch",	cmd_patch,	usage_patch,	"pa" },
171 	{ "revert",	cmd_revert,	usage_revert,	"rv" },
172 	{ "commit",	cmd_commit,	usage_commit,	"ci" },
173 	{ "send",	cmd_send,	usage_send,	"se" },
174 	{ "cherrypick",	cmd_cherrypick,	usage_cherrypick, "cy" },
175 	{ "backout",	cmd_backout,	usage_backout,	"bo" },
176 	{ "rebase",	cmd_rebase,	usage_rebase,	"rb" },
177 	{ "histedit",	cmd_histedit,	usage_histedit,	"he" },
178 	{ "integrate",  cmd_integrate,  usage_integrate,"ig" },
179 	{ "merge",	cmd_merge,	usage_merge,	"mg" },
180 	{ "stage",	cmd_stage,	usage_stage,	"sg" },
181 	{ "unstage",	cmd_unstage,	usage_unstage,	"ug" },
182 	{ "cat",	cmd_cat,	usage_cat,	"" },
183 	{ "info",	cmd_info,	usage_info,	"" },
184 };
185 
186 static void
187 list_commands(FILE *fp)
188 {
189 	size_t i;
190 
191 	fprintf(fp, "commands:");
192 	for (i = 0; i < nitems(got_commands); i++) {
193 		const struct got_cmd *cmd = &got_commands[i];
194 		fprintf(fp, " %s", cmd->cmd_name);
195 	}
196 	fputc('\n', fp);
197 }
198 
199 __dead static void
200 option_conflict(char a, char b)
201 {
202 	errx(1, "-%c and -%c options are mutually exclusive", a, b);
203 }
204 
205 int
206 main(int argc, char *argv[])
207 {
208 	const struct got_cmd *cmd;
209 	size_t i;
210 	int ch;
211 	int hflag = 0, Vflag = 0;
212 	static const struct option longopts[] = {
213 	    { "version", no_argument, NULL, 'V' },
214 	    { NULL, 0, NULL, 0 }
215 	};
216 
217 	setlocale(LC_CTYPE, "");
218 
219 	while ((ch = getopt_long(argc, argv, "+hV", longopts, NULL)) != -1) {
220 		switch (ch) {
221 		case 'h':
222 			hflag = 1;
223 			break;
224 		case 'V':
225 			Vflag = 1;
226 			break;
227 		default:
228 			usage(hflag, 1);
229 			/* NOTREACHED */
230 		}
231 	}
232 
233 	argc -= optind;
234 	argv += optind;
235 	optind = 1;
236 	optreset = 1;
237 
238 	if (Vflag) {
239 		got_version_print_str();
240 		return 0;
241 	}
242 
243 	if (argc <= 0)
244 		usage(hflag, hflag ? 0 : 1);
245 
246 	signal(SIGINT, catch_sigint);
247 	signal(SIGPIPE, catch_sigpipe);
248 
249 	for (i = 0; i < nitems(got_commands); i++) {
250 		const struct got_error *error;
251 
252 		cmd = &got_commands[i];
253 
254 		if (strcmp(cmd->cmd_name, argv[0]) != 0 &&
255 		    strcmp(cmd->cmd_alias, argv[0]) != 0)
256 			continue;
257 
258 		if (hflag)
259 			cmd->cmd_usage();
260 
261 		error = cmd->cmd_main(argc, argv);
262 		if (error && error->code != GOT_ERR_CANCELLED &&
263 		    error->code != GOT_ERR_PRIVSEP_EXIT &&
264 		    !(sigpipe_received &&
265 		      error->code == GOT_ERR_ERRNO && errno == EPIPE) &&
266 		    !(sigint_received &&
267 		      error->code == GOT_ERR_ERRNO && errno == EINTR)) {
268 			fprintf(stderr, "%s: %s\n", getprogname(), error->msg);
269 			return 1;
270 		}
271 
272 		return 0;
273 	}
274 
275 	fprintf(stderr, "%s: unknown command '%s'\n", getprogname(), argv[0]);
276 	list_commands(stderr);
277 	return 1;
278 }
279 
280 __dead static void
281 usage(int hflag, int status)
282 {
283 	FILE *fp = (status == 0) ? stdout : stderr;
284 
285 	fprintf(fp, "usage: %s [-hV] command [arg ...]\n",
286 	    getprogname());
287 	if (hflag)
288 		list_commands(fp);
289 	exit(status);
290 }
291 
292 static const struct got_error *
293 get_editor(char **abspath)
294 {
295 	const struct got_error *err = NULL;
296 	const char *editor;
297 
298 	*abspath = NULL;
299 
300 	editor = getenv("VISUAL");
301 	if (editor == NULL)
302 		editor = getenv("EDITOR");
303 
304 	if (editor) {
305 		err = got_path_find_prog(abspath, editor);
306 		if (err)
307 			return err;
308 	}
309 
310 	if (*abspath == NULL) {
311 		*abspath = strdup("/usr/bin/vi");
312 		if (*abspath == NULL)
313 			return got_error_from_errno("strdup");
314 	}
315 
316 	return NULL;
317 }
318 
319 static const struct got_error *
320 apply_unveil(const char *repo_path, int repo_read_only,
321     const char *worktree_path)
322 {
323 	const struct got_error *err;
324 
325 #ifdef PROFILE
326 	if (unveil("gmon.out", "rwc") != 0)
327 		return got_error_from_errno2("unveil", "gmon.out");
328 #endif
329 	if (repo_path && unveil(repo_path, repo_read_only ? "r" : "rwc") != 0)
330 		return got_error_from_errno2("unveil", repo_path);
331 
332 	if (worktree_path && unveil(worktree_path, "rwc") != 0)
333 		return got_error_from_errno2("unveil", worktree_path);
334 
335 	if (unveil(GOT_TMPDIR_STR, "rwc") != 0)
336 		return got_error_from_errno2("unveil", GOT_TMPDIR_STR);
337 
338 	err = got_privsep_unveil_exec_helpers();
339 	if (err != NULL)
340 		return err;
341 
342 	if (unveil(NULL, NULL) != 0)
343 		return got_error_from_errno("unveil");
344 
345 	return NULL;
346 }
347 
348 __dead static void
349 usage_import(void)
350 {
351 	fprintf(stderr, "usage: %s import [-b branch] [-I pattern] [-m message] "
352 	    "[-r repository-path] directory\n", getprogname());
353 	exit(1);
354 }
355 
356 static int
357 spawn_editor(const char *editor, const char *file)
358 {
359 	pid_t pid;
360 	sig_t sighup, sigint, sigquit;
361 	int st = -1;
362 
363 	sighup = signal(SIGHUP, SIG_IGN);
364 	sigint = signal(SIGINT, SIG_IGN);
365 	sigquit = signal(SIGQUIT, SIG_IGN);
366 
367 	switch (pid = fork()) {
368 	case -1:
369 		goto doneediting;
370 	case 0:
371 		execl(editor, editor, file, (char *)NULL);
372 		_exit(127);
373 	}
374 
375 	while (waitpid(pid, &st, 0) == -1)
376 		if (errno != EINTR)
377 			break;
378 
379 doneediting:
380 	(void)signal(SIGHUP, sighup);
381 	(void)signal(SIGINT, sigint);
382 	(void)signal(SIGQUIT, sigquit);
383 
384 	if (!WIFEXITED(st)) {
385 		errno = EINTR;
386 		return -1;
387 	}
388 
389 	return WEXITSTATUS(st);
390 }
391 
392 static const struct got_error *
393 read_logmsg(char **logmsg, size_t *len, FILE *fp, size_t filesize)
394 {
395 	const struct got_error *err = NULL;
396 	char *line = NULL;
397 	size_t linesize = 0;
398 
399 	*logmsg = NULL;
400 	*len = 0;
401 
402 	if (fseeko(fp, 0L, SEEK_SET) == -1)
403 		return got_error_from_errno("fseeko");
404 
405 	*logmsg = malloc(filesize + 1);
406 	if (*logmsg == NULL)
407 		return got_error_from_errno("malloc");
408 	(*logmsg)[0] = '\0';
409 
410 	while (getline(&line, &linesize, fp) != -1) {
411 		if (line[0] == '#' || (*len == 0 && line[0] == '\n'))
412 			continue; /* remove comments and leading empty lines */
413 		*len = strlcat(*logmsg, line, filesize + 1);
414 		if (*len >= filesize + 1) {
415 			err = got_error(GOT_ERR_NO_SPACE);
416 			goto done;
417 		}
418 	}
419 	if (ferror(fp)) {
420 		err = got_ferror(fp, GOT_ERR_IO);
421 		goto done;
422 	}
423 
424 	while (*len > 0 && (*logmsg)[*len - 1] == '\n') {
425 		(*logmsg)[*len - 1] = '\0';
426 		(*len)--;
427 	}
428 done:
429 	free(line);
430 	if (err) {
431 		free(*logmsg);
432 		*logmsg = NULL;
433 		*len = 0;
434 	}
435 	return err;
436 }
437 
438 static const struct got_error *
439 edit_logmsg(char **logmsg, const char *editor, const char *logmsg_path,
440     const char *initial_content, size_t initial_content_len,
441     int require_modification)
442 {
443 	const struct got_error *err = NULL;
444 	struct stat st, st2;
445 	FILE *fp = NULL;
446 	size_t logmsg_len;
447 
448 	*logmsg = NULL;
449 
450 	if (stat(logmsg_path, &st) == -1)
451 		return got_error_from_errno2("stat", logmsg_path);
452 
453 	if (spawn_editor(editor, logmsg_path) == -1)
454 		return got_error_from_errno("failed spawning editor");
455 
456 	if (require_modification) {
457 		struct timespec timeout;
458 
459 		timeout.tv_sec = 0;
460 		timeout.tv_nsec = 1;
461 		nanosleep(&timeout,  NULL);
462 	}
463 
464 	if (stat(logmsg_path, &st2) == -1)
465 		return got_error_from_errno("stat");
466 
467 	if (require_modification && st.st_size == st2.st_size &&
468 	    timespeccmp(&st.st_mtim, &st2.st_mtim, ==))
469 		return got_error_msg(GOT_ERR_COMMIT_MSG_EMPTY,
470 		    "no changes made to commit message, aborting");
471 
472 	fp = fopen(logmsg_path, "re");
473 	if (fp == NULL) {
474 		err = got_error_from_errno("fopen");
475 		goto done;
476 	}
477 
478 	/* strip comments and leading/trailing newlines */
479 	err = read_logmsg(logmsg, &logmsg_len, fp, st2.st_size);
480 	if (err)
481 		goto done;
482 	if (logmsg_len == 0) {
483 		err = got_error_msg(GOT_ERR_COMMIT_MSG_EMPTY,
484 		    "commit message cannot be empty, aborting");
485 		goto done;
486 	}
487 done:
488 	if (fp && fclose(fp) == EOF && err == NULL)
489 		err = got_error_from_errno("fclose");
490 	if (err) {
491 		free(*logmsg);
492 		*logmsg = NULL;
493 	}
494 	return err;
495 }
496 
497 static const struct got_error *
498 collect_import_msg(char **logmsg, char **logmsg_path, const char *editor,
499     const char *path_dir, const char *branch_name)
500 {
501 	char *initial_content = NULL;
502 	const struct got_error *err = NULL;
503 	int initial_content_len;
504 	int fd = -1;
505 
506 	initial_content_len = asprintf(&initial_content,
507 	    "\n# %s to be imported to branch %s\n", path_dir,
508 	    branch_name);
509 	if (initial_content_len == -1)
510 		return got_error_from_errno("asprintf");
511 
512 	err = got_opentemp_named_fd(logmsg_path, &fd,
513 	    GOT_TMPDIR_STR "/got-importmsg", "");
514 	if (err)
515 		goto done;
516 
517 	if (write(fd, initial_content, initial_content_len) == -1) {
518 		err = got_error_from_errno2("write", *logmsg_path);
519 		goto done;
520 	}
521 
522 	err = edit_logmsg(logmsg, editor, *logmsg_path, initial_content,
523 	    initial_content_len, 1);
524 done:
525 	if (fd != -1 && close(fd) == -1 && err == NULL)
526 		err = got_error_from_errno2("close", *logmsg_path);
527 	free(initial_content);
528 	if (err) {
529 		free(*logmsg_path);
530 		*logmsg_path = NULL;
531 	}
532 	return err;
533 }
534 
535 static const struct got_error *
536 import_progress(void *arg, const char *path)
537 {
538 	printf("A  %s\n", path);
539 	return NULL;
540 }
541 
542 static const struct got_error *
543 valid_author(const char *author)
544 {
545 	const char *email = author;
546 
547 	/*
548 	 * Git' expects the author (or committer) to be in the form
549 	 * "name <email>", which are mostly free form (see the
550 	 * "committer" description in git-fast-import(1)).  We're only
551 	 * doing this to avoid git's object parser breaking on commits
552 	 * we create.
553 	 */
554 
555 	while (*author && *author != '\n' && *author != '<' && *author != '>')
556 		author++;
557 	if (author != email && *author == '<' && *(author - 1) != ' ')
558 		return got_error_fmt(GOT_ERR_COMMIT_BAD_AUTHOR, "%s: space "
559 		    "between author name and email required", email);
560 	if (*author++ != '<')
561 		return got_error_fmt(GOT_ERR_COMMIT_NO_EMAIL, "%s", email);
562 	while (*author && *author != '\n' && *author != '<' && *author != '>')
563 		author++;
564 	if (strcmp(author, ">") != 0)
565 		return got_error_fmt(GOT_ERR_COMMIT_NO_EMAIL, "%s", email);
566 	return NULL;
567 }
568 
569 static const struct got_error *
570 get_author(char **author, struct got_repository *repo,
571     struct got_worktree *worktree)
572 {
573 	const struct got_error *err = NULL;
574 	const char *got_author = NULL, *name, *email;
575 	const struct got_gotconfig *worktree_conf = NULL, *repo_conf = NULL;
576 
577 	*author = NULL;
578 
579 	if (worktree)
580 		worktree_conf = got_worktree_get_gotconfig(worktree);
581 	repo_conf = got_repo_get_gotconfig(repo);
582 
583 	/*
584 	 * Priority of potential author information sources, from most
585 	 * significant to least significant:
586 	 * 1) work tree's .got/got.conf file
587 	 * 2) repository's got.conf file
588 	 * 3) repository's git config file
589 	 * 4) environment variables
590 	 * 5) global git config files (in user's home directory or /etc)
591 	 */
592 
593 	if (worktree_conf)
594 		got_author = got_gotconfig_get_author(worktree_conf);
595 	if (got_author == NULL)
596 		got_author = got_gotconfig_get_author(repo_conf);
597 	if (got_author == NULL) {
598 		name = got_repo_get_gitconfig_author_name(repo);
599 		email = got_repo_get_gitconfig_author_email(repo);
600 		if (name && email) {
601 			if (asprintf(author, "%s <%s>", name, email) == -1)
602 				return got_error_from_errno("asprintf");
603 			return NULL;
604 		}
605 
606 		got_author = getenv("GOT_AUTHOR");
607 		if (got_author == NULL) {
608 			name = got_repo_get_global_gitconfig_author_name(repo);
609 			email = got_repo_get_global_gitconfig_author_email(
610 			    repo);
611 			if (name && email) {
612 				if (asprintf(author, "%s <%s>", name, email)
613 				    == -1)
614 					return got_error_from_errno("asprintf");
615 				return NULL;
616 			}
617 			/* TODO: Look up user in password database? */
618 			return got_error(GOT_ERR_COMMIT_NO_AUTHOR);
619 		}
620 	}
621 
622 	*author = strdup(got_author);
623 	if (*author == NULL)
624 		return got_error_from_errno("strdup");
625 
626 	err = valid_author(*author);
627 	if (err) {
628 		free(*author);
629 		*author = NULL;
630 	}
631 	return err;
632 }
633 
634 static const struct got_error *
635 get_allowed_signers(char **allowed_signers, struct got_repository *repo,
636     struct got_worktree *worktree)
637 {
638 	const char *got_allowed_signers = NULL;
639 	const struct got_gotconfig *worktree_conf = NULL, *repo_conf = NULL;
640 
641 	*allowed_signers = NULL;
642 
643 	if (worktree)
644 		worktree_conf = got_worktree_get_gotconfig(worktree);
645 	repo_conf = got_repo_get_gotconfig(repo);
646 
647 	/*
648 	 * Priority of potential author information sources, from most
649 	 * significant to least significant:
650 	 * 1) work tree's .got/got.conf file
651 	 * 2) repository's got.conf file
652 	 */
653 
654 	if (worktree_conf)
655 		got_allowed_signers = got_gotconfig_get_allowed_signers_file(
656 		    worktree_conf);
657 	if (got_allowed_signers == NULL)
658 		got_allowed_signers = got_gotconfig_get_allowed_signers_file(
659 		    repo_conf);
660 
661 	if (got_allowed_signers) {
662 		*allowed_signers = strdup(got_allowed_signers);
663 		if (*allowed_signers == NULL)
664 			return got_error_from_errno("strdup");
665 	}
666 	return NULL;
667 }
668 
669 static const struct got_error *
670 get_revoked_signers(char **revoked_signers, struct got_repository *repo,
671     struct got_worktree *worktree)
672 {
673 	const char *got_revoked_signers = NULL;
674 	const struct got_gotconfig *worktree_conf = NULL, *repo_conf = NULL;
675 
676 	*revoked_signers = NULL;
677 
678 	if (worktree)
679 		worktree_conf = got_worktree_get_gotconfig(worktree);
680 	repo_conf = got_repo_get_gotconfig(repo);
681 
682 	/*
683 	 * Priority of potential author information sources, from most
684 	 * significant to least significant:
685 	 * 1) work tree's .got/got.conf file
686 	 * 2) repository's got.conf file
687 	 */
688 
689 	if (worktree_conf)
690 		got_revoked_signers = got_gotconfig_get_revoked_signers_file(
691 		    worktree_conf);
692 	if (got_revoked_signers == NULL)
693 		got_revoked_signers = got_gotconfig_get_revoked_signers_file(
694 		    repo_conf);
695 
696 	if (got_revoked_signers) {
697 		*revoked_signers = strdup(got_revoked_signers);
698 		if (*revoked_signers == NULL)
699 			return got_error_from_errno("strdup");
700 	}
701 	return NULL;
702 }
703 
704 static const char *
705 get_signer_id(struct got_repository *repo, struct got_worktree *worktree)
706 {
707 	const char *got_signer_id = NULL;
708 	const struct got_gotconfig *worktree_conf = NULL, *repo_conf = NULL;
709 
710 	if (worktree)
711 		worktree_conf = got_worktree_get_gotconfig(worktree);
712 	repo_conf = got_repo_get_gotconfig(repo);
713 
714 	/*
715 	 * Priority of potential author information sources, from most
716 	 * significant to least significant:
717 	 * 1) work tree's .got/got.conf file
718 	 * 2) repository's got.conf file
719 	 */
720 
721 	if (worktree_conf)
722 		got_signer_id = got_gotconfig_get_signer_id(worktree_conf);
723 	if (got_signer_id == NULL)
724 		got_signer_id = got_gotconfig_get_signer_id(repo_conf);
725 
726 	return got_signer_id;
727 }
728 
729 static const struct got_error *
730 get_gitconfig_path(char **gitconfig_path)
731 {
732 	const char *homedir = getenv("HOME");
733 
734 	*gitconfig_path = NULL;
735 	if (homedir) {
736 		if (asprintf(gitconfig_path, "%s/.gitconfig", homedir) == -1)
737 			return got_error_from_errno("asprintf");
738 
739 	}
740 	return NULL;
741 }
742 
743 static const struct got_error *
744 cmd_import(int argc, char *argv[])
745 {
746 	const struct got_error *error = NULL;
747 	char *path_dir = NULL, *repo_path = NULL, *logmsg = NULL;
748 	char *gitconfig_path = NULL, *editor = NULL, *author = NULL;
749 	const char *branch_name = NULL;
750 	char *id_str = NULL, *logmsg_path = NULL;
751 	char refname[PATH_MAX] = "refs/heads/";
752 	struct got_repository *repo = NULL;
753 	struct got_reference *branch_ref = NULL, *head_ref = NULL;
754 	struct got_object_id *new_commit_id = NULL;
755 	int ch, n = 0;
756 	struct got_pathlist_head ignores;
757 	struct got_pathlist_entry *pe;
758 	int preserve_logmsg = 0;
759 	int *pack_fds = NULL;
760 
761 	TAILQ_INIT(&ignores);
762 
763 #ifndef PROFILE
764 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
765 	    "unveil",
766 	    NULL) == -1)
767 		err(1, "pledge");
768 #endif
769 
770 	while ((ch = getopt(argc, argv, "b:I:m:r:")) != -1) {
771 		switch (ch) {
772 		case 'b':
773 			branch_name = optarg;
774 			break;
775 		case 'I':
776 			if (optarg[0] == '\0')
777 				break;
778 			error = got_pathlist_insert(&pe, &ignores, optarg,
779 			    NULL);
780 			if (error)
781 				goto done;
782 			break;
783 		case 'm':
784 			logmsg = strdup(optarg);
785 			if (logmsg == NULL) {
786 				error = got_error_from_errno("strdup");
787 				goto done;
788 			}
789 			break;
790 		case 'r':
791 			repo_path = realpath(optarg, NULL);
792 			if (repo_path == NULL) {
793 				error = got_error_from_errno2("realpath",
794 				    optarg);
795 				goto done;
796 			}
797 			break;
798 		default:
799 			usage_import();
800 			/* NOTREACHED */
801 		}
802 	}
803 
804 	argc -= optind;
805 	argv += optind;
806 
807 	if (argc != 1)
808 		usage_import();
809 
810 	if (repo_path == NULL) {
811 		repo_path = getcwd(NULL, 0);
812 		if (repo_path == NULL)
813 			return got_error_from_errno("getcwd");
814 	}
815 	got_path_strip_trailing_slashes(repo_path);
816 	error = get_gitconfig_path(&gitconfig_path);
817 	if (error)
818 		goto done;
819 	error = got_repo_pack_fds_open(&pack_fds);
820 	if (error != NULL)
821 		goto done;
822 	error = got_repo_open(&repo, repo_path, gitconfig_path, pack_fds);
823 	if (error)
824 		goto done;
825 
826 	error = get_author(&author, repo, NULL);
827 	if (error)
828 		return error;
829 
830 	/*
831 	 * Don't let the user create a branch name with a leading '-'.
832 	 * While technically a valid reference name, this case is usually
833 	 * an unintended typo.
834 	 */
835 	if (branch_name && branch_name[0] == '-')
836 		return got_error_path(branch_name, GOT_ERR_REF_NAME_MINUS);
837 
838 	error = got_ref_open(&head_ref, repo, GOT_REF_HEAD, 0);
839 	if (error && error->code != GOT_ERR_NOT_REF)
840 		goto done;
841 
842 	if (branch_name)
843 		n = strlcat(refname, branch_name, sizeof(refname));
844 	else if (head_ref && got_ref_is_symbolic(head_ref))
845 		n = strlcpy(refname, got_ref_get_symref_target(head_ref),
846 		    sizeof(refname));
847 	else
848 		n = strlcat(refname, "main", sizeof(refname));
849 	if (n >= sizeof(refname)) {
850 		error = got_error(GOT_ERR_NO_SPACE);
851 		goto done;
852 	}
853 
854 	error = got_ref_open(&branch_ref, repo, refname, 0);
855 	if (error) {
856 		if (error->code != GOT_ERR_NOT_REF)
857 			goto done;
858 	} else {
859 		error = got_error_msg(GOT_ERR_BRANCH_EXISTS,
860 		    "import target branch already exists");
861 		goto done;
862 	}
863 
864 	path_dir = realpath(argv[0], NULL);
865 	if (path_dir == NULL) {
866 		error = got_error_from_errno2("realpath", argv[0]);
867 		goto done;
868 	}
869 	got_path_strip_trailing_slashes(path_dir);
870 
871 	/*
872 	 * unveil(2) traverses exec(2); if an editor is used we have
873 	 * to apply unveil after the log message has been written.
874 	 */
875 	if (logmsg == NULL || strlen(logmsg) == 0) {
876 		error = get_editor(&editor);
877 		if (error)
878 			goto done;
879 		free(logmsg);
880 		error = collect_import_msg(&logmsg, &logmsg_path, editor,
881 		    path_dir, refname);
882 		if (error) {
883 			if (error->code != GOT_ERR_COMMIT_MSG_EMPTY &&
884 			    logmsg_path != NULL)
885 				preserve_logmsg = 1;
886 			goto done;
887 		}
888 	}
889 
890 	if (unveil(path_dir, "r") != 0) {
891 		error = got_error_from_errno2("unveil", path_dir);
892 		if (logmsg_path)
893 			preserve_logmsg = 1;
894 		goto done;
895 	}
896 
897 	error = apply_unveil(got_repo_get_path(repo), 0, NULL);
898 	if (error) {
899 		if (logmsg_path)
900 			preserve_logmsg = 1;
901 		goto done;
902 	}
903 
904 	error = got_repo_import(&new_commit_id, path_dir, logmsg,
905 	    author, &ignores, repo, import_progress, NULL);
906 	if (error) {
907 		if (logmsg_path)
908 			preserve_logmsg = 1;
909 		goto done;
910 	}
911 
912 	error = got_ref_alloc(&branch_ref, refname, new_commit_id);
913 	if (error) {
914 		if (logmsg_path)
915 			preserve_logmsg = 1;
916 		goto done;
917 	}
918 
919 	error = got_ref_write(branch_ref, repo);
920 	if (error) {
921 		if (logmsg_path)
922 			preserve_logmsg = 1;
923 		goto done;
924 	}
925 
926 	error = got_object_id_str(&id_str, new_commit_id);
927 	if (error) {
928 		if (logmsg_path)
929 			preserve_logmsg = 1;
930 		goto done;
931 	}
932 
933 	error = got_ref_open(&head_ref, repo, GOT_REF_HEAD, 0);
934 	if (error) {
935 		if (error->code != GOT_ERR_NOT_REF) {
936 			if (logmsg_path)
937 				preserve_logmsg = 1;
938 			goto done;
939 		}
940 
941 		error = got_ref_alloc_symref(&head_ref, GOT_REF_HEAD,
942 		    branch_ref);
943 		if (error) {
944 			if (logmsg_path)
945 				preserve_logmsg = 1;
946 			goto done;
947 		}
948 
949 		error = got_ref_write(head_ref, repo);
950 		if (error) {
951 			if (logmsg_path)
952 				preserve_logmsg = 1;
953 			goto done;
954 		}
955 	}
956 
957 	printf("Created branch %s with commit %s\n",
958 	    got_ref_get_name(branch_ref), id_str);
959 done:
960 	if (pack_fds) {
961 		const struct got_error *pack_err =
962 		    got_repo_pack_fds_close(pack_fds);
963 		if (error == NULL)
964 			error = pack_err;
965 	}
966 	if (preserve_logmsg) {
967 		fprintf(stderr, "%s: log message preserved in %s\n",
968 		    getprogname(), logmsg_path);
969 	} else if (logmsg_path && unlink(logmsg_path) == -1 && error == NULL)
970 		error = got_error_from_errno2("unlink", logmsg_path);
971 	free(logmsg);
972 	free(logmsg_path);
973 	free(repo_path);
974 	free(editor);
975 	free(new_commit_id);
976 	free(id_str);
977 	free(author);
978 	free(gitconfig_path);
979 	if (branch_ref)
980 		got_ref_close(branch_ref);
981 	if (head_ref)
982 		got_ref_close(head_ref);
983 	return error;
984 }
985 
986 __dead static void
987 usage_clone(void)
988 {
989 	fprintf(stderr, "usage: %s clone [-almqv] [-b branch] [-R reference] "
990 	    "repository-URL [directory]\n", getprogname());
991 	exit(1);
992 }
993 
994 struct got_fetch_progress_arg {
995 	char last_scaled_size[FMT_SCALED_STRSIZE];
996 	int last_p_indexed;
997 	int last_p_resolved;
998 	int verbosity;
999 
1000 	struct got_repository *repo;
1001 
1002 	int create_configs;
1003 	int configs_created;
1004 	struct {
1005 		struct got_pathlist_head *symrefs;
1006 		struct got_pathlist_head *wanted_branches;
1007 		struct got_pathlist_head *wanted_refs;
1008 		const char *proto;
1009 		const char *host;
1010 		const char *port;
1011 		const char *remote_repo_path;
1012 		const char *git_url;
1013 		int fetch_all_branches;
1014 		int mirror_references;
1015 	} config_info;
1016 };
1017 
1018 /* XXX forward declaration */
1019 static const struct got_error *
1020 create_config_files(const char *proto, const char *host, const char *port,
1021     const char *remote_repo_path, const char *git_url, int fetch_all_branches,
1022     int mirror_references, struct got_pathlist_head *symrefs,
1023     struct got_pathlist_head *wanted_branches,
1024     struct got_pathlist_head *wanted_refs, struct got_repository *repo);
1025 
1026 static const struct got_error *
1027 fetch_progress(void *arg, const char *message, off_t packfile_size,
1028     int nobj_total, int nobj_indexed, int nobj_loose, int nobj_resolved)
1029 {
1030 	const struct got_error *err = NULL;
1031 	struct got_fetch_progress_arg *a = arg;
1032 	char scaled_size[FMT_SCALED_STRSIZE];
1033 	int p_indexed, p_resolved;
1034 	int print_size = 0, print_indexed = 0, print_resolved = 0;
1035 
1036 	/*
1037 	 * In order to allow a failed clone to be resumed with 'got fetch'
1038 	 * we try to create configuration files as soon as possible.
1039 	 * Once the server has sent information about its default branch
1040 	 * we have all required information.
1041 	 */
1042 	if (a->create_configs && !a->configs_created &&
1043 	    !TAILQ_EMPTY(a->config_info.symrefs)) {
1044 		err = create_config_files(a->config_info.proto,
1045 		    a->config_info.host, a->config_info.port,
1046 		    a->config_info.remote_repo_path,
1047 		    a->config_info.git_url,
1048 		    a->config_info.fetch_all_branches,
1049 		    a->config_info.mirror_references,
1050 		    a->config_info.symrefs,
1051 		    a->config_info.wanted_branches,
1052 		    a->config_info.wanted_refs, a->repo);
1053 		if (err)
1054 			return err;
1055 		a->configs_created = 1;
1056 	}
1057 
1058 	if (a->verbosity < 0)
1059 		return NULL;
1060 
1061 	if (message && message[0] != '\0') {
1062 		printf("\rserver: %s", message);
1063 		fflush(stdout);
1064 		return NULL;
1065 	}
1066 
1067 	if (packfile_size > 0 || nobj_indexed > 0) {
1068 		if (fmt_scaled(packfile_size, scaled_size) == 0 &&
1069 		    (a->last_scaled_size[0] == '\0' ||
1070 		    strcmp(scaled_size, a->last_scaled_size)) != 0) {
1071 			print_size = 1;
1072 			if (strlcpy(a->last_scaled_size, scaled_size,
1073 			    FMT_SCALED_STRSIZE) >= FMT_SCALED_STRSIZE)
1074 				return got_error(GOT_ERR_NO_SPACE);
1075 		}
1076 		if (nobj_indexed > 0) {
1077 			p_indexed = (nobj_indexed * 100) / nobj_total;
1078 			if (p_indexed != a->last_p_indexed) {
1079 				a->last_p_indexed = p_indexed;
1080 				print_indexed = 1;
1081 				print_size = 1;
1082 			}
1083 		}
1084 		if (nobj_resolved > 0) {
1085 			p_resolved = (nobj_resolved * 100) /
1086 			    (nobj_total - nobj_loose);
1087 			if (p_resolved != a->last_p_resolved) {
1088 				a->last_p_resolved = p_resolved;
1089 				print_resolved = 1;
1090 				print_indexed = 1;
1091 				print_size = 1;
1092 			}
1093 		}
1094 
1095 	}
1096 	if (print_size || print_indexed || print_resolved)
1097 		printf("\r");
1098 	if (print_size)
1099 		printf("%*s fetched", FMT_SCALED_STRSIZE - 2, scaled_size);
1100 	if (print_indexed)
1101 		printf("; indexing %d%%", p_indexed);
1102 	if (print_resolved)
1103 		printf("; resolving deltas %d%%", p_resolved);
1104 	if (print_size || print_indexed || print_resolved)
1105 		fflush(stdout);
1106 
1107 	return NULL;
1108 }
1109 
1110 static const struct got_error *
1111 create_symref(const char *refname, struct got_reference *target_ref,
1112     int verbosity, struct got_repository *repo)
1113 {
1114 	const struct got_error *err;
1115 	struct got_reference *head_symref;
1116 
1117 	err = got_ref_alloc_symref(&head_symref, refname, target_ref);
1118 	if (err)
1119 		return err;
1120 
1121 	err = got_ref_write(head_symref, repo);
1122 	if (err == NULL && verbosity > 0) {
1123 		printf("Created reference %s: %s\n", GOT_REF_HEAD,
1124 		    got_ref_get_name(target_ref));
1125 	}
1126 	got_ref_close(head_symref);
1127 	return err;
1128 }
1129 
1130 static const struct got_error *
1131 list_remote_refs(struct got_pathlist_head *symrefs,
1132     struct got_pathlist_head *refs)
1133 {
1134 	const struct got_error *err;
1135 	struct got_pathlist_entry *pe;
1136 
1137 	TAILQ_FOREACH(pe, symrefs, entry) {
1138 		const char *refname = pe->path;
1139 		const char *targetref = pe->data;
1140 
1141 		printf("%s: %s\n", refname, targetref);
1142 	}
1143 
1144 	TAILQ_FOREACH(pe, refs, entry) {
1145 		const char *refname = pe->path;
1146 		struct got_object_id *id = pe->data;
1147 		char *id_str;
1148 
1149 		err = got_object_id_str(&id_str, id);
1150 		if (err)
1151 			return err;
1152 		printf("%s: %s\n", refname, id_str);
1153 		free(id_str);
1154 	}
1155 
1156 	return NULL;
1157 }
1158 
1159 static const struct got_error *
1160 create_ref(const char *refname, struct got_object_id *id,
1161     int verbosity, struct got_repository *repo)
1162 {
1163 	const struct got_error *err = NULL;
1164 	struct got_reference *ref;
1165 	char *id_str;
1166 
1167 	err = got_object_id_str(&id_str, id);
1168 	if (err)
1169 		return err;
1170 
1171 	err = got_ref_alloc(&ref, refname, id);
1172 	if (err)
1173 		goto done;
1174 
1175 	err = got_ref_write(ref, repo);
1176 	got_ref_close(ref);
1177 
1178 	if (err == NULL && verbosity >= 0)
1179 		printf("Created reference %s: %s\n", refname, id_str);
1180 done:
1181 	free(id_str);
1182 	return err;
1183 }
1184 
1185 static int
1186 match_wanted_ref(const char *refname, const char *wanted_ref)
1187 {
1188 	if (strncmp(refname, "refs/", 5) != 0)
1189 		return 0;
1190 	refname += 5;
1191 
1192 	/*
1193 	 * Prevent fetching of references that won't make any
1194 	 * sense outside of the remote repository's context.
1195 	 */
1196 	if (strncmp(refname, "got/", 4) == 0)
1197 		return 0;
1198 	if (strncmp(refname, "remotes/", 8) == 0)
1199 		return 0;
1200 
1201 	if (strncmp(wanted_ref, "refs/", 5) == 0)
1202 		wanted_ref += 5;
1203 
1204 	/* Allow prefix match. */
1205 	if (got_path_is_child(refname, wanted_ref, strlen(wanted_ref)))
1206 		return 1;
1207 
1208 	/* Allow exact match. */
1209 	return (strcmp(refname, wanted_ref) == 0);
1210 }
1211 
1212 static int
1213 is_wanted_ref(struct got_pathlist_head *wanted_refs, const char *refname)
1214 {
1215 	struct got_pathlist_entry *pe;
1216 
1217 	TAILQ_FOREACH(pe, wanted_refs, entry) {
1218 		if (match_wanted_ref(refname, pe->path))
1219 			return 1;
1220 	}
1221 
1222 	return 0;
1223 }
1224 
1225 static const struct got_error *
1226 create_wanted_ref(const char *refname, struct got_object_id *id,
1227     const char *remote_repo_name, int verbosity, struct got_repository *repo)
1228 {
1229 	const struct got_error *err;
1230 	char *remote_refname;
1231 
1232 	if (strncmp("refs/", refname, 5) == 0)
1233 		refname += 5;
1234 
1235 	if (asprintf(&remote_refname, "refs/remotes/%s/%s",
1236 	    remote_repo_name, refname) == -1)
1237 		return got_error_from_errno("asprintf");
1238 
1239 	err = create_ref(remote_refname, id, verbosity, repo);
1240 	free(remote_refname);
1241 	return err;
1242 }
1243 
1244 static const struct got_error *
1245 create_gotconfig(const char *proto, const char *host, const char *port,
1246     const char *remote_repo_path, const char *default_branch,
1247     int fetch_all_branches, struct got_pathlist_head *wanted_branches,
1248     struct got_pathlist_head *wanted_refs, int mirror_references,
1249     struct got_repository *repo)
1250 {
1251 	const struct got_error *err = NULL;
1252 	char *gotconfig_path = NULL;
1253 	char *gotconfig = NULL;
1254 	FILE *gotconfig_file = NULL;
1255 	const char *branchname = NULL;
1256 	char *branches = NULL, *refs = NULL;
1257 	ssize_t n;
1258 
1259 	if (!fetch_all_branches && !TAILQ_EMPTY(wanted_branches)) {
1260 		struct got_pathlist_entry *pe;
1261 		TAILQ_FOREACH(pe, wanted_branches, entry) {
1262 			char *s;
1263 			branchname = pe->path;
1264 			if (strncmp(branchname, "refs/heads/", 11) == 0)
1265 				branchname += 11;
1266 			if (asprintf(&s, "%s\"%s\" ",
1267 			    branches ? branches : "", branchname) == -1) {
1268 				err = got_error_from_errno("asprintf");
1269 				goto done;
1270 			}
1271 			free(branches);
1272 			branches = s;
1273 		}
1274 	} else if (!fetch_all_branches && default_branch) {
1275 		branchname = default_branch;
1276 		if (strncmp(branchname, "refs/heads/", 11) == 0)
1277 			branchname += 11;
1278 		if (asprintf(&branches, "\"%s\" ", branchname) == -1) {
1279 			err = got_error_from_errno("asprintf");
1280 			goto done;
1281 		}
1282 	}
1283 	if (!TAILQ_EMPTY(wanted_refs)) {
1284 		struct got_pathlist_entry *pe;
1285 		TAILQ_FOREACH(pe, wanted_refs, entry) {
1286 			char *s;
1287 			const char *refname = pe->path;
1288 			if (strncmp(refname, "refs/", 5) == 0)
1289 				branchname += 5;
1290 			if (asprintf(&s, "%s\"%s\" ",
1291 			    refs ? refs : "", refname) == -1) {
1292 				err = got_error_from_errno("asprintf");
1293 				goto done;
1294 			}
1295 			free(refs);
1296 			refs = s;
1297 		}
1298 	}
1299 
1300 	/* Create got.conf(5). */
1301 	gotconfig_path = got_repo_get_path_gotconfig(repo);
1302 	if (gotconfig_path == NULL) {
1303 		err = got_error_from_errno("got_repo_get_path_gotconfig");
1304 		goto done;
1305 	}
1306 	gotconfig_file = fopen(gotconfig_path, "ae");
1307 	if (gotconfig_file == NULL) {
1308 		err = got_error_from_errno2("fopen", gotconfig_path);
1309 		goto done;
1310 	}
1311 	if (asprintf(&gotconfig,
1312 	    "remote \"%s\" {\n"
1313 	    "\tserver %s\n"
1314 	    "\tprotocol %s\n"
1315 	    "%s%s%s"
1316 	    "\trepository \"%s\"\n"
1317 	    "%s%s%s"
1318 	    "%s%s%s"
1319 	    "%s"
1320 	    "%s"
1321 	    "}\n",
1322 	    GOT_FETCH_DEFAULT_REMOTE_NAME, host, proto,
1323 	    port ? "\tport " : "", port ? port : "", port ? "\n" : "",
1324 	    remote_repo_path, branches ? "\tbranch { " : "",
1325 	    branches ? branches : "", branches ? "}\n" : "",
1326 	    refs ? "\treference { " : "", refs ? refs : "", refs ? "}\n" : "",
1327 	    mirror_references ? "\tmirror_references yes\n" : "",
1328 	    fetch_all_branches ? "\tfetch_all_branches yes\n" : "") == -1) {
1329 		err = got_error_from_errno("asprintf");
1330 		goto done;
1331 	}
1332 	n = fwrite(gotconfig, 1, strlen(gotconfig), gotconfig_file);
1333 	if (n != strlen(gotconfig)) {
1334 		err = got_ferror(gotconfig_file, GOT_ERR_IO);
1335 		goto done;
1336 	}
1337 
1338 done:
1339 	if (gotconfig_file && fclose(gotconfig_file) == EOF && err == NULL)
1340 		err = got_error_from_errno2("fclose", gotconfig_path);
1341 	free(gotconfig_path);
1342 	free(branches);
1343 	return err;
1344 }
1345 
1346 static const struct got_error *
1347 create_gitconfig(const char *git_url, const char *default_branch,
1348     int fetch_all_branches, struct got_pathlist_head *wanted_branches,
1349     struct got_pathlist_head *wanted_refs, int mirror_references,
1350     struct got_repository *repo)
1351 {
1352 	const struct got_error *err = NULL;
1353 	char *gitconfig_path = NULL;
1354 	char *gitconfig = NULL;
1355 	FILE *gitconfig_file = NULL;
1356 	char *branches = NULL, *refs = NULL;
1357 	const char *branchname;
1358 	ssize_t n;
1359 
1360 	/* Create a config file Git can understand. */
1361 	gitconfig_path = got_repo_get_path_gitconfig(repo);
1362 	if (gitconfig_path == NULL) {
1363 		err = got_error_from_errno("got_repo_get_path_gitconfig");
1364 		goto done;
1365 	}
1366 	gitconfig_file = fopen(gitconfig_path, "ae");
1367 	if (gitconfig_file == NULL) {
1368 		err = got_error_from_errno2("fopen", gitconfig_path);
1369 		goto done;
1370 	}
1371 	if (fetch_all_branches) {
1372 		if (mirror_references) {
1373 			if (asprintf(&branches,
1374 			    "\tfetch = refs/heads/*:refs/heads/*\n") == -1) {
1375 				err = got_error_from_errno("asprintf");
1376 				goto done;
1377 			}
1378 		} else if (asprintf(&branches,
1379 		    "\tfetch = refs/heads/*:refs/remotes/%s/*\n",
1380 		    GOT_FETCH_DEFAULT_REMOTE_NAME) == -1) {
1381 			err = got_error_from_errno("asprintf");
1382 			goto done;
1383 		}
1384 	} else if (!TAILQ_EMPTY(wanted_branches)) {
1385 		struct got_pathlist_entry *pe;
1386 		TAILQ_FOREACH(pe, wanted_branches, entry) {
1387 			char *s;
1388 			branchname = pe->path;
1389 			if (strncmp(branchname, "refs/heads/", 11) == 0)
1390 				branchname += 11;
1391 			if (mirror_references) {
1392 				if (asprintf(&s,
1393 				    "%s\tfetch = refs/heads/%s:refs/heads/%s\n",
1394 				    branches ? branches : "",
1395 				    branchname, branchname) == -1) {
1396 					err = got_error_from_errno("asprintf");
1397 					goto done;
1398 				}
1399 			} else if (asprintf(&s,
1400 			    "%s\tfetch = refs/heads/%s:refs/remotes/%s/%s\n",
1401 			    branches ? branches : "",
1402 			    branchname, GOT_FETCH_DEFAULT_REMOTE_NAME,
1403 			    branchname) == -1) {
1404 				err = got_error_from_errno("asprintf");
1405 				goto done;
1406 			}
1407 			free(branches);
1408 			branches = s;
1409 		}
1410 	} else {
1411 		/*
1412 		 * If the server specified a default branch, use just that one.
1413 		 * Otherwise fall back to fetching all branches on next fetch.
1414 		 */
1415 		if (default_branch) {
1416 			branchname = default_branch;
1417 			if (strncmp(branchname, "refs/heads/", 11) == 0)
1418 				branchname += 11;
1419 		} else
1420 			branchname = "*"; /* fall back to all branches */
1421 		if (mirror_references) {
1422 			if (asprintf(&branches,
1423 			    "\tfetch = refs/heads/%s:refs/heads/%s\n",
1424 			    branchname, branchname) == -1) {
1425 				err = got_error_from_errno("asprintf");
1426 				goto done;
1427 			}
1428 		} else if (asprintf(&branches,
1429 		    "\tfetch = refs/heads/%s:refs/remotes/%s/%s\n",
1430 		    branchname, GOT_FETCH_DEFAULT_REMOTE_NAME,
1431 		    branchname) == -1) {
1432 			err = got_error_from_errno("asprintf");
1433 			goto done;
1434 		}
1435 	}
1436 	if (!TAILQ_EMPTY(wanted_refs)) {
1437 		struct got_pathlist_entry *pe;
1438 		TAILQ_FOREACH(pe, wanted_refs, entry) {
1439 			char *s;
1440 			const char *refname = pe->path;
1441 			if (strncmp(refname, "refs/", 5) == 0)
1442 				refname += 5;
1443 			if (mirror_references) {
1444 				if (asprintf(&s,
1445 				    "%s\tfetch = refs/%s:refs/%s\n",
1446 				    refs ? refs : "", refname, refname) == -1) {
1447 					err = got_error_from_errno("asprintf");
1448 					goto done;
1449 				}
1450 			} else if (asprintf(&s,
1451 			    "%s\tfetch = refs/%s:refs/remotes/%s/%s\n",
1452 			    refs ? refs : "",
1453 			    refname, GOT_FETCH_DEFAULT_REMOTE_NAME,
1454 			    refname) == -1) {
1455 				err = got_error_from_errno("asprintf");
1456 				goto done;
1457 			}
1458 			free(refs);
1459 			refs = s;
1460 		}
1461 	}
1462 
1463 	if (asprintf(&gitconfig,
1464 	    "[remote \"%s\"]\n"
1465 	    "\turl = %s\n"
1466 	    "%s"
1467 	    "%s"
1468 	    "\tfetch = refs/tags/*:refs/tags/*\n",
1469 	    GOT_FETCH_DEFAULT_REMOTE_NAME, git_url, branches ? branches : "",
1470 	    refs ? refs : "") == -1) {
1471 		err = got_error_from_errno("asprintf");
1472 		goto done;
1473 	}
1474 	n = fwrite(gitconfig, 1, strlen(gitconfig), gitconfig_file);
1475 	if (n != strlen(gitconfig)) {
1476 		err = got_ferror(gitconfig_file, GOT_ERR_IO);
1477 		goto done;
1478 	}
1479 done:
1480 	if (gitconfig_file && fclose(gitconfig_file) == EOF && err == NULL)
1481 		err = got_error_from_errno2("fclose", gitconfig_path);
1482 	free(gitconfig_path);
1483 	free(branches);
1484 	return err;
1485 }
1486 
1487 static const struct got_error *
1488 create_config_files(const char *proto, const char *host, const char *port,
1489     const char *remote_repo_path, const char *git_url, int fetch_all_branches,
1490     int mirror_references, struct got_pathlist_head *symrefs,
1491     struct got_pathlist_head *wanted_branches,
1492     struct got_pathlist_head *wanted_refs, struct got_repository *repo)
1493 {
1494 	const struct got_error *err = NULL;
1495 	const char *default_branch = NULL;
1496 	struct got_pathlist_entry *pe;
1497 
1498 	/*
1499 	 * If we asked for a set of wanted branches then use the first
1500 	 * one of those.
1501 	 */
1502 	if (!TAILQ_EMPTY(wanted_branches)) {
1503 		pe = TAILQ_FIRST(wanted_branches);
1504 		default_branch = pe->path;
1505 	} else {
1506 		/* First HEAD ref listed by server is the default branch. */
1507 		TAILQ_FOREACH(pe, symrefs, entry) {
1508 			const char *refname = pe->path;
1509 			const char *target = pe->data;
1510 
1511 			if (strcmp(refname, GOT_REF_HEAD) != 0)
1512 				continue;
1513 
1514 			default_branch = target;
1515 			break;
1516 		}
1517 	}
1518 
1519 	/* Create got.conf(5). */
1520 	err = create_gotconfig(proto, host, port, remote_repo_path,
1521 	    default_branch, fetch_all_branches, wanted_branches,
1522 	    wanted_refs, mirror_references, repo);
1523 	if (err)
1524 		return err;
1525 
1526 	/* Create a config file Git can understand. */
1527 	return create_gitconfig(git_url, default_branch, fetch_all_branches,
1528 	    wanted_branches, wanted_refs, mirror_references, repo);
1529 }
1530 
1531 static const struct got_error *
1532 cmd_clone(int argc, char *argv[])
1533 {
1534 	const struct got_error *error = NULL;
1535 	const char *uri, *dirname;
1536 	char *proto, *host, *port, *repo_name, *server_path;
1537 	char *default_destdir = NULL, *id_str = NULL;
1538 	const char *repo_path;
1539 	struct got_repository *repo = NULL;
1540 	struct got_pathlist_head refs, symrefs, wanted_branches, wanted_refs;
1541 	struct got_pathlist_entry *pe;
1542 	struct got_object_id *pack_hash = NULL;
1543 	int ch, fetchfd = -1, fetchstatus;
1544 	pid_t fetchpid = -1;
1545 	struct got_fetch_progress_arg fpa;
1546 	char *git_url = NULL;
1547 	int verbosity = 0, fetch_all_branches = 0, mirror_references = 0;
1548 	int bflag = 0, list_refs_only = 0;
1549 	int *pack_fds = NULL;
1550 
1551 	TAILQ_INIT(&refs);
1552 	TAILQ_INIT(&symrefs);
1553 	TAILQ_INIT(&wanted_branches);
1554 	TAILQ_INIT(&wanted_refs);
1555 
1556 	while ((ch = getopt(argc, argv, "ab:lmqR:v")) != -1) {
1557 		switch (ch) {
1558 		case 'a':
1559 			fetch_all_branches = 1;
1560 			break;
1561 		case 'b':
1562 			error = got_pathlist_append(&wanted_branches,
1563 			    optarg, NULL);
1564 			if (error)
1565 				return error;
1566 			bflag = 1;
1567 			break;
1568 		case 'l':
1569 			list_refs_only = 1;
1570 			break;
1571 		case 'm':
1572 			mirror_references = 1;
1573 			break;
1574 		case 'q':
1575 			verbosity = -1;
1576 			break;
1577 		case 'R':
1578 			error = got_pathlist_append(&wanted_refs,
1579 			    optarg, NULL);
1580 			if (error)
1581 				return error;
1582 			break;
1583 		case 'v':
1584 			if (verbosity < 0)
1585 				verbosity = 0;
1586 			else if (verbosity < 3)
1587 				verbosity++;
1588 			break;
1589 		default:
1590 			usage_clone();
1591 			break;
1592 		}
1593 	}
1594 	argc -= optind;
1595 	argv += optind;
1596 
1597 	if (fetch_all_branches && !TAILQ_EMPTY(&wanted_branches))
1598 		option_conflict('a', 'b');
1599 	if (list_refs_only) {
1600 		if (!TAILQ_EMPTY(&wanted_branches))
1601 			option_conflict('l', 'b');
1602 		if (fetch_all_branches)
1603 			option_conflict('l', 'a');
1604 		if (mirror_references)
1605 			option_conflict('l', 'm');
1606 		if (!TAILQ_EMPTY(&wanted_refs))
1607 			option_conflict('l', 'R');
1608 	}
1609 
1610 	uri = argv[0];
1611 
1612 	if (argc == 1)
1613 		dirname = NULL;
1614 	else if (argc == 2)
1615 		dirname = argv[1];
1616 	else
1617 		usage_clone();
1618 
1619 	error = got_dial_parse_uri(&proto, &host, &port, &server_path,
1620 	    &repo_name, uri);
1621 	if (error)
1622 		goto done;
1623 
1624 	if (asprintf(&git_url, "%s://%s%s%s%s%s", proto,
1625 	    host, port ? ":" : "", port ? port : "",
1626 	    server_path[0] != '/' ? "/" : "", server_path) == -1) {
1627 		error = got_error_from_errno("asprintf");
1628 		goto done;
1629 	}
1630 
1631 	if (strcmp(proto, "git") == 0) {
1632 #ifndef PROFILE
1633 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
1634 		    "sendfd dns inet unveil", NULL) == -1)
1635 			err(1, "pledge");
1636 #endif
1637 	} else if (strcmp(proto, "git+ssh") == 0 ||
1638 	    strcmp(proto, "ssh") == 0) {
1639 #ifndef PROFILE
1640 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
1641 		    "sendfd unveil", NULL) == -1)
1642 			err(1, "pledge");
1643 #endif
1644 	} else if (strcmp(proto, "http") == 0 ||
1645 	    strcmp(proto, "git+http") == 0) {
1646 		error = got_error_path(proto, GOT_ERR_NOT_IMPL);
1647 		goto done;
1648 	} else {
1649 		error = got_error_path(proto, GOT_ERR_BAD_PROTO);
1650 		goto done;
1651 	}
1652 	if (dirname == NULL) {
1653 		if (asprintf(&default_destdir, "%s.git", repo_name) == -1) {
1654 			error = got_error_from_errno("asprintf");
1655 			goto done;
1656 		}
1657 		repo_path = default_destdir;
1658 	} else
1659 		repo_path = dirname;
1660 
1661 	if (!list_refs_only) {
1662 		error = got_path_mkdir(repo_path);
1663 		if (error &&
1664 		    (!(error->code == GOT_ERR_ERRNO && errno == EISDIR) &&
1665 		    !(error->code == GOT_ERR_ERRNO && errno == EEXIST)))
1666 			goto done;
1667 		if (!got_path_dir_is_empty(repo_path)) {
1668 			error = got_error_path(repo_path,
1669 			    GOT_ERR_DIR_NOT_EMPTY);
1670 			goto done;
1671 		}
1672 	}
1673 
1674 	error = got_dial_apply_unveil(proto);
1675 	if (error)
1676 		goto done;
1677 
1678 	error = apply_unveil(repo_path, 0, NULL);
1679 	if (error)
1680 		goto done;
1681 
1682 	if (verbosity >= 0)
1683 		printf("Connecting to %s\n", git_url);
1684 
1685 	error = got_fetch_connect(&fetchpid, &fetchfd, proto, host, port,
1686 	    server_path, verbosity);
1687 	if (error)
1688 		goto done;
1689 
1690 	if (!list_refs_only) {
1691 		error = got_repo_init(repo_path, NULL);
1692 		if (error)
1693 			goto done;
1694 		error = got_repo_pack_fds_open(&pack_fds);
1695 		if (error != NULL)
1696 			goto done;
1697 		error = got_repo_open(&repo, repo_path, NULL, pack_fds);
1698 		if (error)
1699 			goto done;
1700 	}
1701 
1702 	fpa.last_scaled_size[0] = '\0';
1703 	fpa.last_p_indexed = -1;
1704 	fpa.last_p_resolved = -1;
1705 	fpa.verbosity = verbosity;
1706 	fpa.create_configs = 1;
1707 	fpa.configs_created = 0;
1708 	fpa.repo = repo;
1709 	fpa.config_info.symrefs = &symrefs;
1710 	fpa.config_info.wanted_branches = &wanted_branches;
1711 	fpa.config_info.wanted_refs = &wanted_refs;
1712 	fpa.config_info.proto = proto;
1713 	fpa.config_info.host = host;
1714 	fpa.config_info.port = port;
1715 	fpa.config_info.remote_repo_path = server_path;
1716 	fpa.config_info.git_url = git_url;
1717 	fpa.config_info.fetch_all_branches = fetch_all_branches;
1718 	fpa.config_info.mirror_references = mirror_references;
1719 	error = got_fetch_pack(&pack_hash, &refs, &symrefs,
1720 	    GOT_FETCH_DEFAULT_REMOTE_NAME, mirror_references,
1721 	    fetch_all_branches, &wanted_branches, &wanted_refs,
1722 	    list_refs_only, verbosity, fetchfd, repo, NULL, NULL, bflag,
1723 	    fetch_progress, &fpa);
1724 	if (error)
1725 		goto done;
1726 
1727 	if (list_refs_only) {
1728 		error = list_remote_refs(&symrefs, &refs);
1729 		goto done;
1730 	}
1731 
1732 	if (pack_hash == NULL) {
1733 		error = got_error_fmt(GOT_ERR_FETCH_FAILED, "%s",
1734 		    "server sent an empty pack file");
1735 		goto done;
1736 	}
1737 	error = got_object_id_str(&id_str, pack_hash);
1738 	if (error)
1739 		goto done;
1740 	if (verbosity >= 0)
1741 		printf("\nFetched %s.pack\n", id_str);
1742 	free(id_str);
1743 
1744 	/* Set up references provided with the pack file. */
1745 	TAILQ_FOREACH(pe, &refs, entry) {
1746 		const char *refname = pe->path;
1747 		struct got_object_id *id = pe->data;
1748 		char *remote_refname;
1749 
1750 		if (is_wanted_ref(&wanted_refs, refname) &&
1751 		    !mirror_references) {
1752 			error = create_wanted_ref(refname, id,
1753 			    GOT_FETCH_DEFAULT_REMOTE_NAME,
1754 			    verbosity - 1, repo);
1755 			if (error)
1756 				goto done;
1757 			continue;
1758 		}
1759 
1760 		error = create_ref(refname, id, verbosity - 1, repo);
1761 		if (error)
1762 			goto done;
1763 
1764 		if (mirror_references)
1765 			continue;
1766 
1767 		if (strncmp("refs/heads/", refname, 11) != 0)
1768 			continue;
1769 
1770 		if (asprintf(&remote_refname,
1771 		    "refs/remotes/%s/%s", GOT_FETCH_DEFAULT_REMOTE_NAME,
1772 		    refname + 11) == -1) {
1773 			error = got_error_from_errno("asprintf");
1774 			goto done;
1775 		}
1776 		error = create_ref(remote_refname, id, verbosity - 1, repo);
1777 		free(remote_refname);
1778 		if (error)
1779 			goto done;
1780 	}
1781 
1782 	/* Set the HEAD reference if the server provided one. */
1783 	TAILQ_FOREACH(pe, &symrefs, entry) {
1784 		struct got_reference *target_ref;
1785 		const char *refname = pe->path;
1786 		const char *target = pe->data;
1787 		char *remote_refname = NULL, *remote_target = NULL;
1788 
1789 		if (strcmp(refname, GOT_REF_HEAD) != 0)
1790 			continue;
1791 
1792 		error = got_ref_open(&target_ref, repo, target, 0);
1793 		if (error) {
1794 			if (error->code == GOT_ERR_NOT_REF) {
1795 				error = NULL;
1796 				continue;
1797 			}
1798 			goto done;
1799 		}
1800 
1801 		error = create_symref(refname, target_ref, verbosity, repo);
1802 		got_ref_close(target_ref);
1803 		if (error)
1804 			goto done;
1805 
1806 		if (mirror_references)
1807 			continue;
1808 
1809 		if (strncmp("refs/heads/", target, 11) != 0)
1810 			continue;
1811 
1812 		if (asprintf(&remote_refname,
1813 		    "refs/remotes/%s/%s", GOT_FETCH_DEFAULT_REMOTE_NAME,
1814 		    refname) == -1) {
1815 			error = got_error_from_errno("asprintf");
1816 			goto done;
1817 		}
1818 		if (asprintf(&remote_target,
1819 		    "refs/remotes/%s/%s", GOT_FETCH_DEFAULT_REMOTE_NAME,
1820 		    target + 11) == -1) {
1821 			error = got_error_from_errno("asprintf");
1822 			free(remote_refname);
1823 			goto done;
1824 		}
1825 		error = got_ref_open(&target_ref, repo, remote_target, 0);
1826 		if (error) {
1827 			free(remote_refname);
1828 			free(remote_target);
1829 			if (error->code == GOT_ERR_NOT_REF) {
1830 				error = NULL;
1831 				continue;
1832 			}
1833 			goto done;
1834 		}
1835 		error = create_symref(remote_refname, target_ref,
1836 		    verbosity - 1, repo);
1837 		free(remote_refname);
1838 		free(remote_target);
1839 		got_ref_close(target_ref);
1840 		if (error)
1841 			goto done;
1842 	}
1843 	if (pe == NULL) {
1844 		/*
1845 		 * We failed to set the HEAD reference. If we asked for
1846 		 * a set of wanted branches use the first of one of those
1847 		 * which could be fetched instead.
1848 		 */
1849 		TAILQ_FOREACH(pe, &wanted_branches, entry) {
1850 			const char *target = pe->path;
1851 			struct got_reference *target_ref;
1852 
1853 			error = got_ref_open(&target_ref, repo, target, 0);
1854 			if (error) {
1855 				if (error->code == GOT_ERR_NOT_REF) {
1856 					error = NULL;
1857 					continue;
1858 				}
1859 				goto done;
1860 			}
1861 
1862 			error = create_symref(GOT_REF_HEAD, target_ref,
1863 			    verbosity, repo);
1864 			got_ref_close(target_ref);
1865 			if (error)
1866 				goto done;
1867 			break;
1868 		}
1869 
1870 		if (!fpa.configs_created && pe != NULL) {
1871 			error = create_config_files(fpa.config_info.proto,
1872 			    fpa.config_info.host, fpa.config_info.port,
1873 			    fpa.config_info.remote_repo_path,
1874 			    fpa.config_info.git_url,
1875 			    fpa.config_info.fetch_all_branches,
1876 			    fpa.config_info.mirror_references,
1877 			    fpa.config_info.symrefs,
1878 			    fpa.config_info.wanted_branches,
1879 			    fpa.config_info.wanted_refs, fpa.repo);
1880 			if (error)
1881 				goto done;
1882 		}
1883 	}
1884 
1885 	if (verbosity >= 0)
1886 		printf("Created %s repository '%s'\n",
1887 		    mirror_references ? "mirrored" : "cloned", repo_path);
1888 done:
1889 	if (pack_fds) {
1890 		const struct got_error *pack_err =
1891 		    got_repo_pack_fds_close(pack_fds);
1892 		if (error == NULL)
1893 			error = pack_err;
1894 	}
1895 	if (fetchpid > 0) {
1896 		if (kill(fetchpid, SIGTERM) == -1)
1897 			error = got_error_from_errno("kill");
1898 		if (waitpid(fetchpid, &fetchstatus, 0) == -1 && error == NULL)
1899 			error = got_error_from_errno("waitpid");
1900 	}
1901 	if (fetchfd != -1 && close(fetchfd) == -1 && error == NULL)
1902 		error = got_error_from_errno("close");
1903 	if (repo) {
1904 		const struct got_error *close_err = got_repo_close(repo);
1905 		if (error == NULL)
1906 			error = close_err;
1907 	}
1908 	got_pathlist_free(&refs, GOT_PATHLIST_FREE_ALL);
1909 	got_pathlist_free(&symrefs, GOT_PATHLIST_FREE_ALL);
1910 	got_pathlist_free(&wanted_branches, GOT_PATHLIST_FREE_NONE);
1911 	got_pathlist_free(&wanted_refs, GOT_PATHLIST_FREE_NONE);
1912 	free(pack_hash);
1913 	free(proto);
1914 	free(host);
1915 	free(port);
1916 	free(server_path);
1917 	free(repo_name);
1918 	free(default_destdir);
1919 	free(git_url);
1920 	return error;
1921 }
1922 
1923 static const struct got_error *
1924 update_ref(struct got_reference *ref, struct got_object_id *new_id,
1925     int replace_tags, int verbosity, struct got_repository *repo)
1926 {
1927 	const struct got_error *err = NULL;
1928 	char *new_id_str = NULL;
1929 	struct got_object_id *old_id = NULL;
1930 
1931 	err = got_object_id_str(&new_id_str, new_id);
1932 	if (err)
1933 		goto done;
1934 
1935 	if (!replace_tags &&
1936 	    strncmp(got_ref_get_name(ref), "refs/tags/", 10) == 0) {
1937 		err = got_ref_resolve(&old_id, repo, ref);
1938 		if (err)
1939 			goto done;
1940 		if (got_object_id_cmp(old_id, new_id) == 0)
1941 			goto done;
1942 		if (verbosity >= 0) {
1943 			printf("Rejecting update of existing tag %s: %s\n",
1944 			    got_ref_get_name(ref), new_id_str);
1945 		}
1946 		goto done;
1947 	}
1948 
1949 	if (got_ref_is_symbolic(ref)) {
1950 		if (verbosity >= 0) {
1951 			printf("Replacing reference %s: %s\n",
1952 			    got_ref_get_name(ref),
1953 			    got_ref_get_symref_target(ref));
1954 		}
1955 		err = got_ref_change_symref_to_ref(ref, new_id);
1956 		if (err)
1957 			goto done;
1958 		err = got_ref_write(ref, repo);
1959 		if (err)
1960 			goto done;
1961 	} else {
1962 		err = got_ref_resolve(&old_id, repo, ref);
1963 		if (err)
1964 			goto done;
1965 		if (got_object_id_cmp(old_id, new_id) == 0)
1966 			goto done;
1967 
1968 		err = got_ref_change_ref(ref, new_id);
1969 		if (err)
1970 			goto done;
1971 		err = got_ref_write(ref, repo);
1972 		if (err)
1973 			goto done;
1974 	}
1975 
1976 	if (verbosity >= 0)
1977 		printf("Updated %s: %s\n", got_ref_get_name(ref),
1978 		    new_id_str);
1979 done:
1980 	free(old_id);
1981 	free(new_id_str);
1982 	return err;
1983 }
1984 
1985 static const struct got_error *
1986 update_symref(const char *refname, struct got_reference *target_ref,
1987     int verbosity, struct got_repository *repo)
1988 {
1989 	const struct got_error *err = NULL, *unlock_err;
1990 	struct got_reference *symref;
1991 	int symref_is_locked = 0;
1992 
1993 	err = got_ref_open(&symref, repo, refname, 1);
1994 	if (err) {
1995 		if (err->code != GOT_ERR_NOT_REF)
1996 			return err;
1997 		err = got_ref_alloc_symref(&symref, refname, target_ref);
1998 		if (err)
1999 			goto done;
2000 
2001 		err = got_ref_write(symref, repo);
2002 		if (err)
2003 			goto done;
2004 
2005 		if (verbosity >= 0)
2006 			printf("Created reference %s: %s\n",
2007 			    got_ref_get_name(symref),
2008 			    got_ref_get_symref_target(symref));
2009 	} else {
2010 		symref_is_locked = 1;
2011 
2012 		if (strcmp(got_ref_get_symref_target(symref),
2013 		    got_ref_get_name(target_ref)) == 0)
2014 			goto done;
2015 
2016 		err = got_ref_change_symref(symref,
2017 		    got_ref_get_name(target_ref));
2018 		if (err)
2019 			goto done;
2020 
2021 		err = got_ref_write(symref, repo);
2022 		if (err)
2023 			goto done;
2024 
2025 		if (verbosity >= 0)
2026 			printf("Updated %s: %s\n", got_ref_get_name(symref),
2027 			    got_ref_get_symref_target(symref));
2028 
2029 	}
2030 done:
2031 	if (symref_is_locked) {
2032 		unlock_err = got_ref_unlock(symref);
2033 		if (unlock_err && err == NULL)
2034 			err = unlock_err;
2035 	}
2036 	got_ref_close(symref);
2037 	return err;
2038 }
2039 
2040 __dead static void
2041 usage_fetch(void)
2042 {
2043 	fprintf(stderr, "usage: %s fetch [-adlqtvX] [-b branch] "
2044 	    "[-R reference] [-r repository-path] [remote-repository]\n",
2045 	    getprogname());
2046 	exit(1);
2047 }
2048 
2049 static const struct got_error *
2050 delete_missing_ref(struct got_reference *ref,
2051     int verbosity, struct got_repository *repo)
2052 {
2053 	const struct got_error *err = NULL;
2054 	struct got_object_id *id = NULL;
2055 	char *id_str = NULL;
2056 
2057 	if (got_ref_is_symbolic(ref)) {
2058 		err = got_ref_delete(ref, repo);
2059 		if (err)
2060 			return err;
2061 		if (verbosity >= 0) {
2062 			printf("Deleted %s: %s\n",
2063 			    got_ref_get_name(ref),
2064 			    got_ref_get_symref_target(ref));
2065 		}
2066 	} else {
2067 		err = got_ref_resolve(&id, repo, ref);
2068 		if (err)
2069 			return err;
2070 		err = got_object_id_str(&id_str, id);
2071 		if (err)
2072 			goto done;
2073 
2074 		err = got_ref_delete(ref, repo);
2075 		if (err)
2076 			goto done;
2077 		if (verbosity >= 0) {
2078 			printf("Deleted %s: %s\n",
2079 			    got_ref_get_name(ref), id_str);
2080 		}
2081 	}
2082 done:
2083 	free(id);
2084 	free(id_str);
2085 	return err;
2086 }
2087 
2088 static const struct got_error *
2089 delete_missing_refs(struct got_pathlist_head *their_refs,
2090     struct got_pathlist_head *their_symrefs,
2091     const struct got_remote_repo *remote,
2092     int verbosity, struct got_repository *repo)
2093 {
2094 	const struct got_error *err = NULL, *unlock_err;
2095 	struct got_reflist_head my_refs;
2096 	struct got_reflist_entry *re;
2097 	struct got_pathlist_entry *pe;
2098 	char *remote_namespace = NULL;
2099 	char *local_refname = NULL;
2100 
2101 	TAILQ_INIT(&my_refs);
2102 
2103 	if (asprintf(&remote_namespace, "refs/remotes/%s/", remote->name)
2104 	    == -1)
2105 		return got_error_from_errno("asprintf");
2106 
2107 	err = got_ref_list(&my_refs, repo, NULL, got_ref_cmp_by_name, NULL);
2108 	if (err)
2109 		goto done;
2110 
2111 	TAILQ_FOREACH(re, &my_refs, entry) {
2112 		const char *refname = got_ref_get_name(re->ref);
2113 		const char *their_refname;
2114 
2115 		if (remote->mirror_references) {
2116 			their_refname = refname;
2117 		} else {
2118 			if (strncmp(refname, remote_namespace,
2119 			    strlen(remote_namespace)) == 0) {
2120 				if (strcmp(refname + strlen(remote_namespace),
2121 				    GOT_REF_HEAD) == 0)
2122 					continue;
2123 				if (asprintf(&local_refname, "refs/heads/%s",
2124 				    refname + strlen(remote_namespace)) == -1) {
2125 					err = got_error_from_errno("asprintf");
2126 					goto done;
2127 				}
2128 			} else if (strncmp(refname, "refs/tags/", 10) != 0)
2129 				continue;
2130 
2131 			their_refname = local_refname;
2132 		}
2133 
2134 		TAILQ_FOREACH(pe, their_refs, entry) {
2135 			if (strcmp(their_refname, pe->path) == 0)
2136 				break;
2137 		}
2138 		if (pe != NULL)
2139 			continue;
2140 
2141 		TAILQ_FOREACH(pe, their_symrefs, entry) {
2142 			if (strcmp(their_refname, pe->path) == 0)
2143 				break;
2144 		}
2145 		if (pe != NULL)
2146 			continue;
2147 
2148 		err = delete_missing_ref(re->ref, verbosity, repo);
2149 		if (err)
2150 			break;
2151 
2152 		if (local_refname) {
2153 			struct got_reference *ref;
2154 			err = got_ref_open(&ref, repo, local_refname, 1);
2155 			if (err) {
2156 				if (err->code != GOT_ERR_NOT_REF)
2157 					break;
2158 				free(local_refname);
2159 				local_refname = NULL;
2160 				continue;
2161 			}
2162 			err = delete_missing_ref(ref, verbosity, repo);
2163 			if (err)
2164 				break;
2165 			unlock_err = got_ref_unlock(ref);
2166 			got_ref_close(ref);
2167 			if (unlock_err && err == NULL) {
2168 				err = unlock_err;
2169 				break;
2170 			}
2171 
2172 			free(local_refname);
2173 			local_refname = NULL;
2174 		}
2175 	}
2176 done:
2177 	got_ref_list_free(&my_refs);
2178 	free(remote_namespace);
2179 	free(local_refname);
2180 	return err;
2181 }
2182 
2183 static const struct got_error *
2184 update_wanted_ref(const char *refname, struct got_object_id *id,
2185     const char *remote_repo_name, int verbosity, struct got_repository *repo)
2186 {
2187 	const struct got_error *err, *unlock_err;
2188 	char *remote_refname;
2189 	struct got_reference *ref;
2190 
2191 	if (strncmp("refs/", refname, 5) == 0)
2192 		refname += 5;
2193 
2194 	if (asprintf(&remote_refname, "refs/remotes/%s/%s",
2195 	    remote_repo_name, refname) == -1)
2196 		return got_error_from_errno("asprintf");
2197 
2198 	err = got_ref_open(&ref, repo, remote_refname, 1);
2199 	if (err) {
2200 		if (err->code != GOT_ERR_NOT_REF)
2201 			goto done;
2202 		err = create_ref(remote_refname, id, verbosity, repo);
2203 	} else {
2204 		err = update_ref(ref, id, 0, verbosity, repo);
2205 		unlock_err = got_ref_unlock(ref);
2206 		if (unlock_err && err == NULL)
2207 			err = unlock_err;
2208 		got_ref_close(ref);
2209 	}
2210 done:
2211 	free(remote_refname);
2212 	return err;
2213 }
2214 
2215 static const struct got_error *
2216 delete_ref(struct got_repository *repo, struct got_reference *ref)
2217 {
2218 	const struct got_error *err = NULL;
2219 	struct got_object_id *id = NULL;
2220 	char *id_str = NULL;
2221 	const char *target;
2222 
2223 	if (got_ref_is_symbolic(ref)) {
2224 		target = got_ref_get_symref_target(ref);
2225 	} else {
2226 		err = got_ref_resolve(&id, repo, ref);
2227 		if (err)
2228 			goto done;
2229 		err = got_object_id_str(&id_str, id);
2230 		if (err)
2231 			goto done;
2232 		target = id_str;
2233 	}
2234 
2235 	err = got_ref_delete(ref, repo);
2236 	if (err)
2237 		goto done;
2238 
2239 	printf("Deleted %s: %s\n", got_ref_get_name(ref), target);
2240 done:
2241 	free(id);
2242 	free(id_str);
2243 	return err;
2244 }
2245 
2246 static const struct got_error *
2247 delete_refs_for_remote(struct got_repository *repo, const char *remote_name)
2248 {
2249 	const struct got_error *err = NULL;
2250 	struct got_reflist_head refs;
2251 	struct got_reflist_entry *re;
2252 	char *prefix;
2253 
2254 	TAILQ_INIT(&refs);
2255 
2256 	if (asprintf(&prefix, "refs/remotes/%s", remote_name) == -1) {
2257 		err = got_error_from_errno("asprintf");
2258 		goto done;
2259 	}
2260 	err = got_ref_list(&refs, repo, prefix, got_ref_cmp_by_name, NULL);
2261 	if (err)
2262 		goto done;
2263 
2264 	TAILQ_FOREACH(re, &refs, entry)
2265 		delete_ref(repo, re->ref);
2266 done:
2267 	got_ref_list_free(&refs);
2268 	return err;
2269 }
2270 
2271 static const struct got_error *
2272 cmd_fetch(int argc, char *argv[])
2273 {
2274 	const struct got_error *error = NULL, *unlock_err;
2275 	char *cwd = NULL, *repo_path = NULL;
2276 	const char *remote_name;
2277 	char *proto = NULL, *host = NULL, *port = NULL;
2278 	char *repo_name = NULL, *server_path = NULL;
2279 	const struct got_remote_repo *remotes, *remote = NULL;
2280 	int nremotes;
2281 	char *id_str = NULL;
2282 	struct got_repository *repo = NULL;
2283 	struct got_worktree *worktree = NULL;
2284 	const struct got_gotconfig *repo_conf = NULL, *worktree_conf = NULL;
2285 	struct got_pathlist_head refs, symrefs, wanted_branches, wanted_refs;
2286 	struct got_pathlist_entry *pe;
2287 	struct got_reflist_head remote_refs;
2288 	struct got_reflist_entry *re;
2289 	struct got_object_id *pack_hash = NULL;
2290 	int i, ch, fetchfd = -1, fetchstatus;
2291 	pid_t fetchpid = -1;
2292 	struct got_fetch_progress_arg fpa;
2293 	int verbosity = 0, fetch_all_branches = 0, list_refs_only = 0;
2294 	int delete_refs = 0, replace_tags = 0, delete_remote = 0;
2295 	int *pack_fds = NULL, have_bflag = 0;
2296 	const char *remote_head = NULL, *worktree_branch = NULL;
2297 
2298 	TAILQ_INIT(&refs);
2299 	TAILQ_INIT(&symrefs);
2300 	TAILQ_INIT(&remote_refs);
2301 	TAILQ_INIT(&wanted_branches);
2302 	TAILQ_INIT(&wanted_refs);
2303 
2304 	while ((ch = getopt(argc, argv, "ab:dlqR:r:tvX")) != -1) {
2305 		switch (ch) {
2306 		case 'a':
2307 			fetch_all_branches = 1;
2308 			break;
2309 		case 'b':
2310 			error = got_pathlist_append(&wanted_branches,
2311 			    optarg, NULL);
2312 			if (error)
2313 				return error;
2314 			have_bflag = 1;
2315 			break;
2316 		case 'd':
2317 			delete_refs = 1;
2318 			break;
2319 		case 'l':
2320 			list_refs_only = 1;
2321 			break;
2322 		case 'q':
2323 			verbosity = -1;
2324 			break;
2325 		case 'R':
2326 			error = got_pathlist_append(&wanted_refs,
2327 			    optarg, NULL);
2328 			if (error)
2329 				return error;
2330 			break;
2331 		case 'r':
2332 			repo_path = realpath(optarg, NULL);
2333 			if (repo_path == NULL)
2334 				return got_error_from_errno2("realpath",
2335 				    optarg);
2336 			got_path_strip_trailing_slashes(repo_path);
2337 			break;
2338 		case 't':
2339 			replace_tags = 1;
2340 			break;
2341 		case 'v':
2342 			if (verbosity < 0)
2343 				verbosity = 0;
2344 			else if (verbosity < 3)
2345 				verbosity++;
2346 			break;
2347 		case 'X':
2348 			delete_remote = 1;
2349 			break;
2350 		default:
2351 			usage_fetch();
2352 			break;
2353 		}
2354 	}
2355 	argc -= optind;
2356 	argv += optind;
2357 
2358 	if (fetch_all_branches && !TAILQ_EMPTY(&wanted_branches))
2359 		option_conflict('a', 'b');
2360 	if (list_refs_only) {
2361 		if (!TAILQ_EMPTY(&wanted_branches))
2362 			option_conflict('l', 'b');
2363 		if (fetch_all_branches)
2364 			option_conflict('l', 'a');
2365 		if (delete_refs)
2366 			option_conflict('l', 'd');
2367 		if (delete_remote)
2368 			option_conflict('l', 'X');
2369 	}
2370 	if (delete_remote) {
2371 		if (fetch_all_branches)
2372 			option_conflict('X', 'a');
2373 		if (!TAILQ_EMPTY(&wanted_branches))
2374 			option_conflict('X', 'b');
2375 		if (delete_refs)
2376 			option_conflict('X', 'd');
2377 		if (replace_tags)
2378 			option_conflict('X', 't');
2379 		if (!TAILQ_EMPTY(&wanted_refs))
2380 			option_conflict('X', 'R');
2381 	}
2382 
2383 	if (argc == 0) {
2384 		if (delete_remote)
2385 			errx(1, "-X option requires a remote name");
2386 		remote_name = GOT_FETCH_DEFAULT_REMOTE_NAME;
2387 	} else if (argc == 1)
2388 		remote_name = argv[0];
2389 	else
2390 		usage_fetch();
2391 
2392 	cwd = getcwd(NULL, 0);
2393 	if (cwd == NULL) {
2394 		error = got_error_from_errno("getcwd");
2395 		goto done;
2396 	}
2397 
2398 	error = got_repo_pack_fds_open(&pack_fds);
2399 	if (error != NULL)
2400 		goto done;
2401 
2402 	if (repo_path == NULL) {
2403 		error = got_worktree_open(&worktree, cwd);
2404 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
2405 			goto done;
2406 		else
2407 			error = NULL;
2408 		if (worktree) {
2409 			repo_path =
2410 			    strdup(got_worktree_get_repo_path(worktree));
2411 			if (repo_path == NULL)
2412 				error = got_error_from_errno("strdup");
2413 			if (error)
2414 				goto done;
2415 		} else {
2416 			repo_path = strdup(cwd);
2417 			if (repo_path == NULL) {
2418 				error = got_error_from_errno("strdup");
2419 				goto done;
2420 			}
2421 		}
2422 	}
2423 
2424 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
2425 	if (error)
2426 		goto done;
2427 
2428 	if (delete_remote) {
2429 		error = delete_refs_for_remote(repo, remote_name);
2430 		goto done; /* nothing else to do */
2431 	}
2432 
2433 	if (worktree) {
2434 		worktree_conf = got_worktree_get_gotconfig(worktree);
2435 		if (worktree_conf) {
2436 			got_gotconfig_get_remotes(&nremotes, &remotes,
2437 			    worktree_conf);
2438 			for (i = 0; i < nremotes; i++) {
2439 				if (strcmp(remotes[i].name, remote_name) == 0) {
2440 					remote = &remotes[i];
2441 					break;
2442 				}
2443 			}
2444 		}
2445 	}
2446 	if (remote == NULL) {
2447 		repo_conf = got_repo_get_gotconfig(repo);
2448 		if (repo_conf) {
2449 			got_gotconfig_get_remotes(&nremotes, &remotes,
2450 			    repo_conf);
2451 			for (i = 0; i < nremotes; i++) {
2452 				if (strcmp(remotes[i].name, remote_name) == 0) {
2453 					remote = &remotes[i];
2454 					break;
2455 				}
2456 			}
2457 		}
2458 	}
2459 	if (remote == NULL) {
2460 		got_repo_get_gitconfig_remotes(&nremotes, &remotes, repo);
2461 		for (i = 0; i < nremotes; i++) {
2462 			if (strcmp(remotes[i].name, remote_name) == 0) {
2463 				remote = &remotes[i];
2464 				break;
2465 			}
2466 		}
2467 	}
2468 	if (remote == NULL) {
2469 		error = got_error_path(remote_name, GOT_ERR_NO_REMOTE);
2470 		goto done;
2471 	}
2472 
2473 	if (TAILQ_EMPTY(&wanted_branches)) {
2474 		if (!fetch_all_branches)
2475 			fetch_all_branches = remote->fetch_all_branches;
2476 		for (i = 0; i < remote->nfetch_branches; i++) {
2477 			error = got_pathlist_append(&wanted_branches,
2478 			    remote->fetch_branches[i], NULL);
2479 			if (error)
2480 				goto done;
2481 		}
2482 	}
2483 	if (TAILQ_EMPTY(&wanted_refs)) {
2484 		for (i = 0; i < remote->nfetch_refs; i++) {
2485 			error = got_pathlist_append(&wanted_refs,
2486 			    remote->fetch_refs[i], NULL);
2487 			if (error)
2488 				goto done;
2489 		}
2490 	}
2491 
2492 	error = got_dial_parse_uri(&proto, &host, &port, &server_path,
2493 	    &repo_name, remote->fetch_url);
2494 	if (error)
2495 		goto done;
2496 
2497 	if (strcmp(proto, "git") == 0) {
2498 #ifndef PROFILE
2499 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
2500 		    "sendfd dns inet unveil", NULL) == -1)
2501 			err(1, "pledge");
2502 #endif
2503 	} else if (strcmp(proto, "git+ssh") == 0 ||
2504 	    strcmp(proto, "ssh") == 0) {
2505 #ifndef PROFILE
2506 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
2507 		    "sendfd unveil", NULL) == -1)
2508 			err(1, "pledge");
2509 #endif
2510 	} else if (strcmp(proto, "http") == 0 ||
2511 	    strcmp(proto, "git+http") == 0) {
2512 		error = got_error_path(proto, GOT_ERR_NOT_IMPL);
2513 		goto done;
2514 	} else {
2515 		error = got_error_path(proto, GOT_ERR_BAD_PROTO);
2516 		goto done;
2517 	}
2518 
2519 	error = got_dial_apply_unveil(proto);
2520 	if (error)
2521 		goto done;
2522 
2523 	error = apply_unveil(got_repo_get_path(repo), 0, NULL);
2524 	if (error)
2525 		goto done;
2526 
2527 	if (verbosity >= 0) {
2528 		printf("Connecting to \"%s\" %s://%s%s%s%s%s\n",
2529 		    remote->name, proto, host,
2530 		    port ? ":" : "", port ? port : "",
2531 		    *server_path == '/' ? "" : "/", server_path);
2532 	}
2533 
2534 	error = got_fetch_connect(&fetchpid, &fetchfd, proto, host, port,
2535 	    server_path, verbosity);
2536 	if (error)
2537 		goto done;
2538 
2539 	if (!have_bflag) {
2540 		/*
2541 		 * If set, get this remote's HEAD ref target so
2542 		 * if it has changed on the server we can fetch it.
2543 		 */
2544 		error = got_ref_list(&remote_refs, repo, "refs/remotes",
2545 		    got_ref_cmp_by_name, repo);
2546 		if (error)
2547 			goto done;
2548 
2549 		TAILQ_FOREACH(re, &remote_refs, entry) {
2550 			const char	*remote_refname, *remote_target;
2551 			size_t		 remote_name_len;
2552 
2553 			if (!got_ref_is_symbolic(re->ref))
2554 				continue;
2555 
2556 			remote_name_len = strlen(remote->name);
2557 			remote_refname = got_ref_get_name(re->ref);
2558 
2559 			/* we only want refs/remotes/$remote->name/HEAD */
2560 			if (strncmp(remote_refname + 13, remote->name,
2561 			    remote_name_len) != 0)
2562 				continue;
2563 
2564 			if (strcmp(remote_refname + remote_name_len + 14,
2565 			    GOT_REF_HEAD) != 0)
2566 				continue;
2567 
2568 			/*
2569 			 * Take the name itself because we already
2570 			 * only match with refs/heads/ in fetch_pack().
2571 			 */
2572 			remote_target = got_ref_get_symref_target(re->ref);
2573 			remote_head = remote_target + remote_name_len + 14;
2574 			break;
2575 		}
2576 
2577 		if (worktree) {
2578 			const char *refname;
2579 
2580 			refname = got_worktree_get_head_ref_name(worktree);
2581 			if (strncmp(refname, "refs/heads/", 11) == 0)
2582 				worktree_branch = refname;
2583 		}
2584 	}
2585 
2586 	fpa.last_scaled_size[0] = '\0';
2587 	fpa.last_p_indexed = -1;
2588 	fpa.last_p_resolved = -1;
2589 	fpa.verbosity = verbosity;
2590 	fpa.repo = repo;
2591 	fpa.create_configs = 0;
2592 	fpa.configs_created = 0;
2593 	memset(&fpa.config_info, 0, sizeof(fpa.config_info));
2594 
2595 	error = got_fetch_pack(&pack_hash, &refs, &symrefs, remote->name,
2596 	    remote->mirror_references, fetch_all_branches, &wanted_branches,
2597 	    &wanted_refs, list_refs_only, verbosity, fetchfd, repo,
2598 	    worktree_branch, remote_head, have_bflag, fetch_progress, &fpa);
2599 	if (error)
2600 		goto done;
2601 
2602 	if (list_refs_only) {
2603 		error = list_remote_refs(&symrefs, &refs);
2604 		goto done;
2605 	}
2606 
2607 	if (pack_hash == NULL) {
2608 		if (verbosity >= 0)
2609 			printf("Already up-to-date\n");
2610 	} else if (verbosity >= 0) {
2611 		error = got_object_id_str(&id_str, pack_hash);
2612 		if (error)
2613 			goto done;
2614 		printf("\nFetched %s.pack\n", id_str);
2615 		free(id_str);
2616 		id_str = NULL;
2617 	}
2618 
2619 	/* Update references provided with the pack file. */
2620 	TAILQ_FOREACH(pe, &refs, entry) {
2621 		const char *refname = pe->path;
2622 		struct got_object_id *id = pe->data;
2623 		struct got_reference *ref;
2624 		char *remote_refname;
2625 
2626 		if (is_wanted_ref(&wanted_refs, refname) &&
2627 		    !remote->mirror_references) {
2628 			error = update_wanted_ref(refname, id,
2629 			    remote->name, verbosity, repo);
2630 			if (error)
2631 				goto done;
2632 			continue;
2633 		}
2634 
2635 		if (remote->mirror_references ||
2636 		    strncmp("refs/tags/", refname, 10) == 0) {
2637 			error = got_ref_open(&ref, repo, refname, 1);
2638 			if (error) {
2639 				if (error->code != GOT_ERR_NOT_REF)
2640 					goto done;
2641 				error = create_ref(refname, id, verbosity,
2642 				    repo);
2643 				if (error)
2644 					goto done;
2645 			} else {
2646 				error = update_ref(ref, id, replace_tags,
2647 				    verbosity, repo);
2648 				unlock_err = got_ref_unlock(ref);
2649 				if (unlock_err && error == NULL)
2650 					error = unlock_err;
2651 				got_ref_close(ref);
2652 				if (error)
2653 					goto done;
2654 			}
2655 		} else if (strncmp("refs/heads/", refname, 11) == 0) {
2656 			if (asprintf(&remote_refname, "refs/remotes/%s/%s",
2657 			    remote_name, refname + 11) == -1) {
2658 				error = got_error_from_errno("asprintf");
2659 				goto done;
2660 			}
2661 
2662 			error = got_ref_open(&ref, repo, remote_refname, 1);
2663 			if (error) {
2664 				if (error->code != GOT_ERR_NOT_REF)
2665 					goto done;
2666 				error = create_ref(remote_refname, id,
2667 				    verbosity, repo);
2668 				if (error)
2669 					goto done;
2670 			} else {
2671 				error = update_ref(ref, id, replace_tags,
2672 				    verbosity, repo);
2673 				unlock_err = got_ref_unlock(ref);
2674 				if (unlock_err && error == NULL)
2675 					error = unlock_err;
2676 				got_ref_close(ref);
2677 				if (error)
2678 					goto done;
2679 			}
2680 
2681 			/* Also create a local branch if none exists yet. */
2682 			error = got_ref_open(&ref, repo, refname, 1);
2683 			if (error) {
2684 				if (error->code != GOT_ERR_NOT_REF)
2685 					goto done;
2686 				error = create_ref(refname, id, verbosity,
2687 				    repo);
2688 				if (error)
2689 					goto done;
2690 			} else {
2691 				unlock_err = got_ref_unlock(ref);
2692 				if (unlock_err && error == NULL)
2693 					error = unlock_err;
2694 				got_ref_close(ref);
2695 			}
2696 		}
2697 	}
2698 	if (delete_refs) {
2699 		error = delete_missing_refs(&refs, &symrefs, remote,
2700 		    verbosity, repo);
2701 		if (error)
2702 			goto done;
2703 	}
2704 
2705 	if (!remote->mirror_references) {
2706 		/* Update remote HEAD reference if the server provided one. */
2707 		TAILQ_FOREACH(pe, &symrefs, entry) {
2708 			struct got_reference *target_ref;
2709 			const char *refname = pe->path;
2710 			const char *target = pe->data;
2711 			char *remote_refname = NULL, *remote_target = NULL;
2712 
2713 			if (strcmp(refname, GOT_REF_HEAD) != 0)
2714 				continue;
2715 
2716 			if (strncmp("refs/heads/", target, 11) != 0)
2717 				continue;
2718 
2719 			if (asprintf(&remote_refname, "refs/remotes/%s/%s",
2720 			    remote->name, refname) == -1) {
2721 				error = got_error_from_errno("asprintf");
2722 				goto done;
2723 			}
2724 			if (asprintf(&remote_target, "refs/remotes/%s/%s",
2725 			    remote->name, target + 11) == -1) {
2726 				error = got_error_from_errno("asprintf");
2727 				free(remote_refname);
2728 				goto done;
2729 			}
2730 
2731 			error = got_ref_open(&target_ref, repo, remote_target,
2732 			    0);
2733 			if (error) {
2734 				free(remote_refname);
2735 				free(remote_target);
2736 				if (error->code == GOT_ERR_NOT_REF) {
2737 					error = NULL;
2738 					continue;
2739 				}
2740 				goto done;
2741 			}
2742 			error = update_symref(remote_refname, target_ref,
2743 			    verbosity, repo);
2744 			free(remote_refname);
2745 			free(remote_target);
2746 			got_ref_close(target_ref);
2747 			if (error)
2748 				goto done;
2749 		}
2750 	}
2751 done:
2752 	if (fetchpid > 0) {
2753 		if (kill(fetchpid, SIGTERM) == -1)
2754 			error = got_error_from_errno("kill");
2755 		if (waitpid(fetchpid, &fetchstatus, 0) == -1 && error == NULL)
2756 			error = got_error_from_errno("waitpid");
2757 	}
2758 	if (fetchfd != -1 && close(fetchfd) == -1 && error == NULL)
2759 		error = got_error_from_errno("close");
2760 	if (repo) {
2761 		const struct got_error *close_err = got_repo_close(repo);
2762 		if (error == NULL)
2763 			error = close_err;
2764 	}
2765 	if (worktree)
2766 		got_worktree_close(worktree);
2767 	if (pack_fds) {
2768 		const struct got_error *pack_err =
2769 		    got_repo_pack_fds_close(pack_fds);
2770 		if (error == NULL)
2771 			error = pack_err;
2772 	}
2773 	got_pathlist_free(&refs, GOT_PATHLIST_FREE_ALL);
2774 	got_pathlist_free(&symrefs, GOT_PATHLIST_FREE_ALL);
2775 	got_pathlist_free(&wanted_branches, GOT_PATHLIST_FREE_NONE);
2776 	got_pathlist_free(&wanted_refs, GOT_PATHLIST_FREE_NONE);
2777 	got_ref_list_free(&remote_refs);
2778 	free(id_str);
2779 	free(cwd);
2780 	free(repo_path);
2781 	free(pack_hash);
2782 	free(proto);
2783 	free(host);
2784 	free(port);
2785 	free(server_path);
2786 	free(repo_name);
2787 	return error;
2788 }
2789 
2790 
2791 __dead static void
2792 usage_checkout(void)
2793 {
2794 	fprintf(stderr, "usage: %s checkout [-Eq] [-b branch] [-c commit] "
2795 	    "[-p path-prefix] repository-path [work-tree-path]\n",
2796 	    getprogname());
2797 	exit(1);
2798 }
2799 
2800 static void
2801 show_worktree_base_ref_warning(void)
2802 {
2803 	fprintf(stderr, "%s: warning: could not create a reference "
2804 	    "to the work tree's base commit; the commit could be "
2805 	    "garbage-collected by Git or 'gotadmin cleanup'; making the "
2806 	    "repository writable and running 'got update' will prevent this\n",
2807 	    getprogname());
2808 }
2809 
2810 struct got_checkout_progress_arg {
2811 	const char *worktree_path;
2812 	int had_base_commit_ref_error;
2813 	int verbosity;
2814 };
2815 
2816 static const struct got_error *
2817 checkout_progress(void *arg, unsigned char status, const char *path)
2818 {
2819 	struct got_checkout_progress_arg *a = arg;
2820 
2821 	/* Base commit bump happens silently. */
2822 	if (status == GOT_STATUS_BUMP_BASE)
2823 		return NULL;
2824 
2825 	if (status == GOT_STATUS_BASE_REF_ERR) {
2826 		a->had_base_commit_ref_error = 1;
2827 		return NULL;
2828 	}
2829 
2830 	while (path[0] == '/')
2831 		path++;
2832 
2833 	if (a->verbosity >= 0)
2834 		printf("%c  %s/%s\n", status, a->worktree_path, path);
2835 
2836 	return NULL;
2837 }
2838 
2839 static const struct got_error *
2840 check_cancelled(void *arg)
2841 {
2842 	if (sigint_received || sigpipe_received)
2843 		return got_error(GOT_ERR_CANCELLED);
2844 	return NULL;
2845 }
2846 
2847 static const struct got_error *
2848 check_linear_ancestry(struct got_object_id *commit_id,
2849     struct got_object_id *base_commit_id, int allow_forwards_in_time_only,
2850     struct got_repository *repo)
2851 {
2852 	const struct got_error *err = NULL;
2853 	struct got_object_id *yca_id;
2854 
2855 	err = got_commit_graph_find_youngest_common_ancestor(&yca_id,
2856 	    commit_id, base_commit_id, 1, repo, check_cancelled, NULL);
2857 	if (err)
2858 		return err;
2859 
2860 	if (yca_id == NULL)
2861 		return got_error(GOT_ERR_ANCESTRY);
2862 
2863 	/*
2864 	 * Require a straight line of history between the target commit
2865 	 * and the work tree's base commit.
2866 	 *
2867 	 * Non-linear situations such as this require a rebase:
2868 	 *
2869 	 * (commit) D       F (base_commit)
2870 	 *           \     /
2871 	 *            C   E
2872 	 *             \ /
2873 	 *              B (yca)
2874 	 *              |
2875 	 *              A
2876 	 *
2877 	 * 'got update' only handles linear cases:
2878 	 * Update forwards in time:  A (base/yca) - B - C - D (commit)
2879 	 * Update backwards in time: D (base) - C - B - A (commit/yca)
2880 	 */
2881 	if (allow_forwards_in_time_only) {
2882 	    if (got_object_id_cmp(base_commit_id, yca_id) != 0)
2883 		return got_error(GOT_ERR_ANCESTRY);
2884 	} else if (got_object_id_cmp(commit_id, yca_id) != 0 &&
2885 	    got_object_id_cmp(base_commit_id, yca_id) != 0)
2886 		return got_error(GOT_ERR_ANCESTRY);
2887 
2888 	free(yca_id);
2889 	return NULL;
2890 }
2891 
2892 static const struct got_error *
2893 check_same_branch(struct got_object_id *commit_id,
2894     struct got_reference *head_ref, struct got_object_id *yca_id,
2895     struct got_repository *repo)
2896 {
2897 	const struct got_error *err = NULL;
2898 	struct got_commit_graph *graph = NULL;
2899 	struct got_object_id *head_commit_id = NULL;
2900 	int is_same_branch = 0;
2901 
2902 	err = got_ref_resolve(&head_commit_id, repo, head_ref);
2903 	if (err)
2904 		goto done;
2905 
2906 	if (got_object_id_cmp(head_commit_id, commit_id) == 0) {
2907 		is_same_branch = 1;
2908 		goto done;
2909 	}
2910 	if (yca_id && got_object_id_cmp(commit_id, yca_id) == 0) {
2911 		is_same_branch = 1;
2912 		goto done;
2913 	}
2914 
2915 	err = got_commit_graph_open(&graph, "/", 1);
2916 	if (err)
2917 		goto done;
2918 
2919 	err = got_commit_graph_iter_start(graph, head_commit_id, repo,
2920 	    check_cancelled, NULL);
2921 	if (err)
2922 		goto done;
2923 
2924 	for (;;) {
2925 		struct got_object_id id;
2926 
2927 		err = got_commit_graph_iter_next(&id, graph, repo,
2928 		    check_cancelled, NULL);
2929 		if (err) {
2930 			if (err->code == GOT_ERR_ITER_COMPLETED)
2931 				err = NULL;
2932 			break;
2933 		}
2934 
2935 		if (yca_id && got_object_id_cmp(&id, yca_id) == 0)
2936 			break;
2937 		if (got_object_id_cmp(&id, commit_id) == 0) {
2938 			is_same_branch = 1;
2939 			break;
2940 		}
2941 	}
2942 done:
2943 	if (graph)
2944 		got_commit_graph_close(graph);
2945 	free(head_commit_id);
2946 	if (!err && !is_same_branch)
2947 		err = got_error(GOT_ERR_ANCESTRY);
2948 	return err;
2949 }
2950 
2951 static const struct got_error *
2952 checkout_ancestry_error(struct got_reference *ref, const char *commit_id_str)
2953 {
2954 	static char msg[512];
2955 	const char *branch_name;
2956 
2957 	if (got_ref_is_symbolic(ref))
2958 		branch_name = got_ref_get_symref_target(ref);
2959 	else
2960 		branch_name = got_ref_get_name(ref);
2961 
2962 	if (strncmp("refs/heads/", branch_name, 11) == 0)
2963 		branch_name += 11;
2964 
2965 	snprintf(msg, sizeof(msg),
2966 	    "target commit is not contained in branch '%s'; "
2967 	    "the branch to use must be specified with -b; "
2968 	    "if necessary a new branch can be created for "
2969 	    "this commit with 'got branch -c %s BRANCH_NAME'",
2970 	    branch_name, commit_id_str);
2971 
2972 	return got_error_msg(GOT_ERR_ANCESTRY, msg);
2973 }
2974 
2975 static const struct got_error *
2976 cmd_checkout(int argc, char *argv[])
2977 {
2978 	const struct got_error *error = NULL;
2979 	struct got_repository *repo = NULL;
2980 	struct got_reference *head_ref = NULL, *ref = NULL;
2981 	struct got_worktree *worktree = NULL;
2982 	char *repo_path = NULL;
2983 	char *worktree_path = NULL;
2984 	const char *path_prefix = "";
2985 	const char *branch_name = GOT_REF_HEAD, *refname = NULL;
2986 	char *commit_id_str = NULL;
2987 	struct got_object_id *commit_id = NULL;
2988 	char *cwd = NULL;
2989 	int ch, same_path_prefix, allow_nonempty = 0, verbosity = 0;
2990 	struct got_pathlist_head paths;
2991 	struct got_checkout_progress_arg cpa;
2992 	int *pack_fds = NULL;
2993 
2994 	TAILQ_INIT(&paths);
2995 
2996 #ifndef PROFILE
2997 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
2998 	    "unveil", NULL) == -1)
2999 		err(1, "pledge");
3000 #endif
3001 
3002 	while ((ch = getopt(argc, argv, "b:c:Ep:q")) != -1) {
3003 		switch (ch) {
3004 		case 'b':
3005 			branch_name = optarg;
3006 			break;
3007 		case 'c':
3008 			commit_id_str = strdup(optarg);
3009 			if (commit_id_str == NULL)
3010 				return got_error_from_errno("strdup");
3011 			break;
3012 		case 'E':
3013 			allow_nonempty = 1;
3014 			break;
3015 		case 'p':
3016 			path_prefix = optarg;
3017 			break;
3018 		case 'q':
3019 			verbosity = -1;
3020 			break;
3021 		default:
3022 			usage_checkout();
3023 			/* NOTREACHED */
3024 		}
3025 	}
3026 
3027 	argc -= optind;
3028 	argv += optind;
3029 
3030 	if (argc == 1) {
3031 		char *base, *dotgit;
3032 		const char *path;
3033 		repo_path = realpath(argv[0], NULL);
3034 		if (repo_path == NULL)
3035 			return got_error_from_errno2("realpath", argv[0]);
3036 		cwd = getcwd(NULL, 0);
3037 		if (cwd == NULL) {
3038 			error = got_error_from_errno("getcwd");
3039 			goto done;
3040 		}
3041 		if (path_prefix[0])
3042 			path = path_prefix;
3043 		else
3044 			path = repo_path;
3045 		error = got_path_basename(&base, path);
3046 		if (error)
3047 			goto done;
3048 		dotgit = strstr(base, ".git");
3049 		if (dotgit)
3050 			*dotgit = '\0';
3051 		if (asprintf(&worktree_path, "%s/%s", cwd, base) == -1) {
3052 			error = got_error_from_errno("asprintf");
3053 			free(base);
3054 			goto done;
3055 		}
3056 		free(base);
3057 	} else if (argc == 2) {
3058 		repo_path = realpath(argv[0], NULL);
3059 		if (repo_path == NULL) {
3060 			error = got_error_from_errno2("realpath", argv[0]);
3061 			goto done;
3062 		}
3063 		worktree_path = realpath(argv[1], NULL);
3064 		if (worktree_path == NULL) {
3065 			if (errno != ENOENT) {
3066 				error = got_error_from_errno2("realpath",
3067 				    argv[1]);
3068 				goto done;
3069 			}
3070 			worktree_path = strdup(argv[1]);
3071 			if (worktree_path == NULL) {
3072 				error = got_error_from_errno("strdup");
3073 				goto done;
3074 			}
3075 		}
3076 	} else
3077 		usage_checkout();
3078 
3079 	got_path_strip_trailing_slashes(repo_path);
3080 	got_path_strip_trailing_slashes(worktree_path);
3081 
3082 	error = got_repo_pack_fds_open(&pack_fds);
3083 	if (error != NULL)
3084 		goto done;
3085 
3086 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
3087 	if (error != NULL)
3088 		goto done;
3089 
3090 	/* Pre-create work tree path for unveil(2) */
3091 	error = got_path_mkdir(worktree_path);
3092 	if (error) {
3093 		if (!(error->code == GOT_ERR_ERRNO && errno == EISDIR) &&
3094 		    !(error->code == GOT_ERR_ERRNO && errno == EEXIST))
3095 			goto done;
3096 		if (!allow_nonempty &&
3097 		    !got_path_dir_is_empty(worktree_path)) {
3098 			error = got_error_path(worktree_path,
3099 			    GOT_ERR_DIR_NOT_EMPTY);
3100 			goto done;
3101 		}
3102 	}
3103 
3104 	error = apply_unveil(got_repo_get_path(repo), 0, worktree_path);
3105 	if (error)
3106 		goto done;
3107 
3108 	error = got_ref_open(&head_ref, repo, branch_name, 0);
3109 	if (error != NULL)
3110 		goto done;
3111 
3112 	error = got_worktree_init(worktree_path, head_ref, path_prefix, repo);
3113 	if (error != NULL && !(error->code == GOT_ERR_ERRNO && errno == EEXIST))
3114 		goto done;
3115 
3116 	error = got_worktree_open(&worktree, worktree_path);
3117 	if (error != NULL)
3118 		goto done;
3119 
3120 	error = got_worktree_match_path_prefix(&same_path_prefix, worktree,
3121 	    path_prefix);
3122 	if (error != NULL)
3123 		goto done;
3124 	if (!same_path_prefix) {
3125 		error = got_error(GOT_ERR_PATH_PREFIX);
3126 		goto done;
3127 	}
3128 
3129 	if (commit_id_str) {
3130 		struct got_reflist_head refs;
3131 		TAILQ_INIT(&refs);
3132 		error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name,
3133 		    NULL);
3134 		if (error)
3135 			goto done;
3136 		error = got_repo_match_object_id(&commit_id, NULL,
3137 		    commit_id_str, GOT_OBJ_TYPE_COMMIT, &refs, repo);
3138 		got_ref_list_free(&refs);
3139 		if (error)
3140 			goto done;
3141 		error = check_linear_ancestry(commit_id,
3142 		    got_worktree_get_base_commit_id(worktree), 0, repo);
3143 		if (error != NULL) {
3144 			if (error->code == GOT_ERR_ANCESTRY) {
3145 				error = checkout_ancestry_error(
3146 				    head_ref, commit_id_str);
3147 			}
3148 			goto done;
3149 		}
3150 		error = check_same_branch(commit_id, head_ref, NULL, repo);
3151 		if (error) {
3152 			if (error->code == GOT_ERR_ANCESTRY) {
3153 				error = checkout_ancestry_error(
3154 				    head_ref, commit_id_str);
3155 			}
3156 			goto done;
3157 		}
3158 		error = got_worktree_set_base_commit_id(worktree, repo,
3159 		    commit_id);
3160 		if (error)
3161 			goto done;
3162 		/* Expand potentially abbreviated commit ID string. */
3163 		free(commit_id_str);
3164 		error = got_object_id_str(&commit_id_str, commit_id);
3165 		if (error)
3166 			goto done;
3167 	} else {
3168 		commit_id = got_object_id_dup(
3169 		    got_worktree_get_base_commit_id(worktree));
3170 		if (commit_id == NULL) {
3171 			error = got_error_from_errno("got_object_id_dup");
3172 			goto done;
3173 		}
3174 		error = got_object_id_str(&commit_id_str, commit_id);
3175 		if (error)
3176 			goto done;
3177 	}
3178 
3179 	error = got_pathlist_append(&paths, "", NULL);
3180 	if (error)
3181 		goto done;
3182 	cpa.worktree_path = worktree_path;
3183 	cpa.had_base_commit_ref_error = 0;
3184 	cpa.verbosity = verbosity;
3185 	error = got_worktree_checkout_files(worktree, &paths, repo,
3186 	    checkout_progress, &cpa, check_cancelled, NULL);
3187 	if (error != NULL)
3188 		goto done;
3189 
3190 	if (got_ref_is_symbolic(head_ref)) {
3191 		error = got_ref_resolve_symbolic(&ref, repo, head_ref);
3192 		if (error)
3193 			goto done;
3194 		refname = got_ref_get_name(ref);
3195 	} else
3196 		refname = got_ref_get_name(head_ref);
3197 	printf("Checked out %s: %s\n", refname, commit_id_str);
3198 	printf("Now shut up and hack\n");
3199 	if (cpa.had_base_commit_ref_error)
3200 		show_worktree_base_ref_warning();
3201 done:
3202 	if (pack_fds) {
3203 		const struct got_error *pack_err =
3204 		    got_repo_pack_fds_close(pack_fds);
3205 		if (error == NULL)
3206 			error = pack_err;
3207 	}
3208 	if (head_ref)
3209 		got_ref_close(head_ref);
3210 	if (ref)
3211 		got_ref_close(ref);
3212 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_NONE);
3213 	free(commit_id_str);
3214 	free(commit_id);
3215 	free(repo_path);
3216 	free(worktree_path);
3217 	free(cwd);
3218 	return error;
3219 }
3220 
3221 struct got_update_progress_arg {
3222 	int did_something;
3223 	int conflicts;
3224 	int obstructed;
3225 	int not_updated;
3226 	int missing;
3227 	int not_deleted;
3228 	int unversioned;
3229 	int verbosity;
3230 };
3231 
3232 static void
3233 print_update_progress_stats(struct got_update_progress_arg *upa)
3234 {
3235 	if (!upa->did_something)
3236 		return;
3237 
3238 	if (upa->conflicts > 0)
3239 		printf("Files with new merge conflicts: %d\n", upa->conflicts);
3240 	if (upa->obstructed > 0)
3241 		printf("File paths obstructed by a non-regular file: %d\n",
3242 		    upa->obstructed);
3243 	if (upa->not_updated > 0)
3244 		printf("Files not updated because of existing merge "
3245 		    "conflicts: %d\n", upa->not_updated);
3246 }
3247 
3248 /*
3249  * The meaning of some status codes differs between merge-style operations and
3250  * update operations. For example, the ! status code means "file was missing"
3251  * if changes were merged into the work tree, and "missing file was restored"
3252  * if the work tree was updated. This function should be used by any operation
3253  * which merges changes into the work tree without updating the work tree.
3254  */
3255 static void
3256 print_merge_progress_stats(struct got_update_progress_arg *upa)
3257 {
3258 	if (!upa->did_something)
3259 		return;
3260 
3261 	if (upa->conflicts > 0)
3262 		printf("Files with new merge conflicts: %d\n", upa->conflicts);
3263 	if (upa->obstructed > 0)
3264 		printf("File paths obstructed by a non-regular file: %d\n",
3265 		    upa->obstructed);
3266 	if (upa->missing > 0)
3267 		printf("Files which had incoming changes but could not be "
3268 		    "found in the work tree: %d\n", upa->missing);
3269 	if (upa->not_deleted > 0)
3270 		printf("Files not deleted due to differences in deleted "
3271 		    "content: %d\n", upa->not_deleted);
3272 	if (upa->unversioned > 0)
3273 		printf("Files not merged because an unversioned file was "
3274 		    "found in the work tree: %d\n", upa->unversioned);
3275 }
3276 
3277 __dead static void
3278 usage_update(void)
3279 {
3280 	fprintf(stderr, "usage: %s update [-q] [-b branch] [-c commit] "
3281 	    "[path ...]\n", getprogname());
3282 	exit(1);
3283 }
3284 
3285 static const struct got_error *
3286 update_progress(void *arg, unsigned char status, const char *path)
3287 {
3288 	struct got_update_progress_arg *upa = arg;
3289 
3290 	if (status == GOT_STATUS_EXISTS ||
3291 	    status == GOT_STATUS_BASE_REF_ERR)
3292 		return NULL;
3293 
3294 	upa->did_something = 1;
3295 
3296 	/* Base commit bump happens silently. */
3297 	if (status == GOT_STATUS_BUMP_BASE)
3298 		return NULL;
3299 
3300 	if (status == GOT_STATUS_CONFLICT)
3301 		upa->conflicts++;
3302 	if (status == GOT_STATUS_OBSTRUCTED)
3303 		upa->obstructed++;
3304 	if (status == GOT_STATUS_CANNOT_UPDATE)
3305 		upa->not_updated++;
3306 	if (status == GOT_STATUS_MISSING)
3307 		upa->missing++;
3308 	if (status == GOT_STATUS_CANNOT_DELETE)
3309 		upa->not_deleted++;
3310 	if (status == GOT_STATUS_UNVERSIONED)
3311 		upa->unversioned++;
3312 
3313 	while (path[0] == '/')
3314 		path++;
3315 	if (upa->verbosity >= 0)
3316 		printf("%c  %s\n", status, path);
3317 
3318 	return NULL;
3319 }
3320 
3321 static const struct got_error *
3322 switch_head_ref(struct got_reference *head_ref,
3323     struct got_object_id *commit_id, struct got_worktree *worktree,
3324     struct got_repository *repo)
3325 {
3326 	const struct got_error *err = NULL;
3327 	char *base_id_str;
3328 	int ref_has_moved = 0;
3329 
3330 	/* Trivial case: switching between two different references. */
3331 	if (strcmp(got_ref_get_name(head_ref),
3332 	    got_worktree_get_head_ref_name(worktree)) != 0) {
3333 		printf("Switching work tree from %s to %s\n",
3334 		    got_worktree_get_head_ref_name(worktree),
3335 		    got_ref_get_name(head_ref));
3336 		return got_worktree_set_head_ref(worktree, head_ref);
3337 	}
3338 
3339 	err = check_linear_ancestry(commit_id,
3340 	    got_worktree_get_base_commit_id(worktree), 0, repo);
3341 	if (err) {
3342 		if (err->code != GOT_ERR_ANCESTRY)
3343 			return err;
3344 		ref_has_moved = 1;
3345 	}
3346 	if (!ref_has_moved)
3347 		return NULL;
3348 
3349 	/* Switching to a rebased branch with the same reference name. */
3350 	err = got_object_id_str(&base_id_str,
3351 	    got_worktree_get_base_commit_id(worktree));
3352 	if (err)
3353 		return err;
3354 	printf("Reference %s now points at a different branch\n",
3355 	    got_worktree_get_head_ref_name(worktree));
3356 	printf("Switching work tree from %s to %s\n", base_id_str,
3357 	    got_worktree_get_head_ref_name(worktree));
3358 	return NULL;
3359 }
3360 
3361 static const struct got_error *
3362 check_rebase_or_histedit_in_progress(struct got_worktree *worktree)
3363 {
3364 	const struct got_error *err;
3365 	int in_progress;
3366 
3367 	err = got_worktree_rebase_in_progress(&in_progress, worktree);
3368 	if (err)
3369 		return err;
3370 	if (in_progress)
3371 		return got_error(GOT_ERR_REBASING);
3372 
3373 	err = got_worktree_histedit_in_progress(&in_progress, worktree);
3374 	if (err)
3375 		return err;
3376 	if (in_progress)
3377 		return got_error(GOT_ERR_HISTEDIT_BUSY);
3378 
3379 	return NULL;
3380 }
3381 
3382 static const struct got_error *
3383 check_merge_in_progress(struct got_worktree *worktree,
3384     struct got_repository *repo)
3385 {
3386 	const struct got_error *err;
3387 	int in_progress;
3388 
3389 	err = got_worktree_merge_in_progress(&in_progress, worktree, repo);
3390 	if (err)
3391 		return err;
3392 	if (in_progress)
3393 		return got_error(GOT_ERR_MERGE_BUSY);
3394 
3395 	return NULL;
3396 }
3397 
3398 static const struct got_error *
3399 get_worktree_paths_from_argv(struct got_pathlist_head *paths, int argc,
3400     char *argv[], struct got_worktree *worktree)
3401 {
3402 	const struct got_error *err = NULL;
3403 	char *path;
3404 	struct got_pathlist_entry *new;
3405 	int i;
3406 
3407 	if (argc == 0) {
3408 		path = strdup("");
3409 		if (path == NULL)
3410 			return got_error_from_errno("strdup");
3411 		return got_pathlist_append(paths, path, NULL);
3412 	}
3413 
3414 	for (i = 0; i < argc; i++) {
3415 		err = got_worktree_resolve_path(&path, worktree, argv[i]);
3416 		if (err)
3417 			break;
3418 		err = got_pathlist_insert(&new, paths, path, NULL);
3419 		if (err || new == NULL /* duplicate */) {
3420 			free(path);
3421 			if (err)
3422 				break;
3423 		}
3424 	}
3425 
3426 	return err;
3427 }
3428 
3429 static const struct got_error *
3430 wrap_not_worktree_error(const struct got_error *orig_err,
3431     const char *cmdname, const char *path)
3432 {
3433 	const struct got_error *err;
3434 	struct got_repository *repo;
3435 	static char msg[512];
3436 	int *pack_fds = NULL;
3437 
3438 	err = got_repo_pack_fds_open(&pack_fds);
3439 	if (err)
3440 		return err;
3441 
3442 	err = got_repo_open(&repo, path, NULL, pack_fds);
3443 	if (err)
3444 		return orig_err;
3445 
3446 	snprintf(msg, sizeof(msg),
3447 	    "'got %s' needs a work tree in addition to a git repository\n"
3448 	    "Work trees can be checked out from this Git repository with "
3449 	    "'got checkout'.\n"
3450 	    "The got(1) manual page contains more information.", cmdname);
3451 	err = got_error_msg(GOT_ERR_NOT_WORKTREE, msg);
3452 	got_repo_close(repo);
3453 	if (pack_fds) {
3454 		const struct got_error *pack_err =
3455 		    got_repo_pack_fds_close(pack_fds);
3456 		if (err == NULL)
3457 			err = pack_err;
3458 	}
3459 	return err;
3460 }
3461 
3462 static const struct got_error *
3463 cmd_update(int argc, char *argv[])
3464 {
3465 	const struct got_error *error = NULL;
3466 	struct got_repository *repo = NULL;
3467 	struct got_worktree *worktree = NULL;
3468 	char *worktree_path = NULL;
3469 	struct got_object_id *commit_id = NULL;
3470 	char *commit_id_str = NULL;
3471 	const char *branch_name = NULL;
3472 	struct got_reference *head_ref = NULL;
3473 	struct got_pathlist_head paths;
3474 	struct got_pathlist_entry *pe;
3475 	int ch, verbosity = 0;
3476 	struct got_update_progress_arg upa;
3477 	int *pack_fds = NULL;
3478 
3479 	TAILQ_INIT(&paths);
3480 
3481 #ifndef PROFILE
3482 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
3483 	    "unveil", NULL) == -1)
3484 		err(1, "pledge");
3485 #endif
3486 
3487 	while ((ch = getopt(argc, argv, "b:c:q")) != -1) {
3488 		switch (ch) {
3489 		case 'b':
3490 			branch_name = optarg;
3491 			break;
3492 		case 'c':
3493 			commit_id_str = strdup(optarg);
3494 			if (commit_id_str == NULL)
3495 				return got_error_from_errno("strdup");
3496 			break;
3497 		case 'q':
3498 			verbosity = -1;
3499 			break;
3500 		default:
3501 			usage_update();
3502 			/* NOTREACHED */
3503 		}
3504 	}
3505 
3506 	argc -= optind;
3507 	argv += optind;
3508 
3509 	worktree_path = getcwd(NULL, 0);
3510 	if (worktree_path == NULL) {
3511 		error = got_error_from_errno("getcwd");
3512 		goto done;
3513 	}
3514 
3515 	error = got_repo_pack_fds_open(&pack_fds);
3516 	if (error != NULL)
3517 		goto done;
3518 
3519 	error = got_worktree_open(&worktree, worktree_path);
3520 	if (error) {
3521 		if (error->code == GOT_ERR_NOT_WORKTREE)
3522 			error = wrap_not_worktree_error(error, "update",
3523 			    worktree_path);
3524 		goto done;
3525 	}
3526 
3527 	error = check_rebase_or_histedit_in_progress(worktree);
3528 	if (error)
3529 		goto done;
3530 
3531 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
3532 	    NULL, pack_fds);
3533 	if (error != NULL)
3534 		goto done;
3535 
3536 	error = apply_unveil(got_repo_get_path(repo), 0,
3537 	    got_worktree_get_root_path(worktree));
3538 	if (error)
3539 		goto done;
3540 
3541 	error = check_merge_in_progress(worktree, repo);
3542 	if (error)
3543 		goto done;
3544 
3545 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
3546 	if (error)
3547 		goto done;
3548 
3549 	error = got_ref_open(&head_ref, repo, branch_name ? branch_name :
3550 	    got_worktree_get_head_ref_name(worktree), 0);
3551 	if (error != NULL)
3552 		goto done;
3553 	if (commit_id_str == NULL) {
3554 		error = got_ref_resolve(&commit_id, repo, head_ref);
3555 		if (error != NULL)
3556 			goto done;
3557 		error = got_object_id_str(&commit_id_str, commit_id);
3558 		if (error != NULL)
3559 			goto done;
3560 	} else {
3561 		struct got_reflist_head refs;
3562 		TAILQ_INIT(&refs);
3563 		error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name,
3564 		    NULL);
3565 		if (error)
3566 			goto done;
3567 		error = got_repo_match_object_id(&commit_id, NULL,
3568 		    commit_id_str, GOT_OBJ_TYPE_COMMIT, &refs, repo);
3569 		got_ref_list_free(&refs);
3570 		free(commit_id_str);
3571 		commit_id_str = NULL;
3572 		if (error)
3573 			goto done;
3574 		error = got_object_id_str(&commit_id_str, commit_id);
3575 		if (error)
3576 			goto done;
3577 	}
3578 
3579 	if (branch_name) {
3580 		struct got_object_id *head_commit_id;
3581 		TAILQ_FOREACH(pe, &paths, entry) {
3582 			if (pe->path_len == 0)
3583 				continue;
3584 			error = got_error_msg(GOT_ERR_BAD_PATH,
3585 			    "switching between branches requires that "
3586 			    "the entire work tree gets updated");
3587 			goto done;
3588 		}
3589 		error = got_ref_resolve(&head_commit_id, repo, head_ref);
3590 		if (error)
3591 			goto done;
3592 		error = check_linear_ancestry(commit_id, head_commit_id, 0,
3593 		    repo);
3594 		free(head_commit_id);
3595 		if (error != NULL)
3596 			goto done;
3597 		error = check_same_branch(commit_id, head_ref, NULL, repo);
3598 		if (error)
3599 			goto done;
3600 		error = switch_head_ref(head_ref, commit_id, worktree, repo);
3601 		if (error)
3602 			goto done;
3603 	} else {
3604 		error = check_linear_ancestry(commit_id,
3605 		    got_worktree_get_base_commit_id(worktree), 0, repo);
3606 		if (error != NULL) {
3607 			if (error->code == GOT_ERR_ANCESTRY)
3608 				error = got_error(GOT_ERR_BRANCH_MOVED);
3609 			goto done;
3610 		}
3611 		error = check_same_branch(commit_id, head_ref, NULL, repo);
3612 		if (error)
3613 			goto done;
3614 	}
3615 
3616 	if (got_object_id_cmp(got_worktree_get_base_commit_id(worktree),
3617 	    commit_id) != 0) {
3618 		error = got_worktree_set_base_commit_id(worktree, repo,
3619 		    commit_id);
3620 		if (error)
3621 			goto done;
3622 	}
3623 
3624 	memset(&upa, 0, sizeof(upa));
3625 	upa.verbosity = verbosity;
3626 	error = got_worktree_checkout_files(worktree, &paths, repo,
3627 	    update_progress, &upa, check_cancelled, NULL);
3628 	if (error != NULL)
3629 		goto done;
3630 
3631 	if (upa.did_something) {
3632 		printf("Updated to %s: %s\n",
3633 		    got_worktree_get_head_ref_name(worktree), commit_id_str);
3634 	} else
3635 		printf("Already up-to-date\n");
3636 
3637 	print_update_progress_stats(&upa);
3638 done:
3639 	if (pack_fds) {
3640 		const struct got_error *pack_err =
3641 		    got_repo_pack_fds_close(pack_fds);
3642 		if (error == NULL)
3643 			error = pack_err;
3644 	}
3645 	free(worktree_path);
3646 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_PATH);
3647 	free(commit_id);
3648 	free(commit_id_str);
3649 	return error;
3650 }
3651 
3652 static const struct got_error *
3653 diff_blobs(struct got_object_id *blob_id1, struct got_object_id *blob_id2,
3654     const char *path, int diff_context, int ignore_whitespace,
3655     int force_text_diff, struct got_diffstat_cb_arg *dsa,
3656     struct got_repository *repo, FILE *outfile)
3657 {
3658 	const struct got_error *err = NULL;
3659 	struct got_blob_object *blob1 = NULL, *blob2 = NULL;
3660 	FILE *f1 = NULL, *f2 = NULL;
3661 	int fd1 = -1, fd2 = -1;
3662 
3663 	fd1 = got_opentempfd();
3664 	if (fd1 == -1)
3665 		return got_error_from_errno("got_opentempfd");
3666 	fd2 = got_opentempfd();
3667 	if (fd2 == -1) {
3668 		err = got_error_from_errno("got_opentempfd");
3669 		goto done;
3670 	}
3671 
3672 	if (blob_id1) {
3673 		err = got_object_open_as_blob(&blob1, repo, blob_id1, 8192,
3674 		    fd1);
3675 		if (err)
3676 			goto done;
3677 	}
3678 
3679 	err = got_object_open_as_blob(&blob2, repo, blob_id2, 8192, fd2);
3680 	if (err)
3681 		goto done;
3682 
3683 	f1 = got_opentemp();
3684 	if (f1 == NULL) {
3685 		err = got_error_from_errno("got_opentemp");
3686 		goto done;
3687 	}
3688 	f2 = got_opentemp();
3689 	if (f2 == NULL) {
3690 		err = got_error_from_errno("got_opentemp");
3691 		goto done;
3692 	}
3693 
3694 	while (path[0] == '/')
3695 		path++;
3696 	err = got_diff_blob(NULL, NULL, blob1, blob2, f1, f2, path, path,
3697 	    GOT_DIFF_ALGORITHM_PATIENCE, diff_context, ignore_whitespace,
3698 	    force_text_diff, dsa, outfile);
3699 done:
3700 	if (fd1 != -1 && close(fd1) == -1 && err == NULL)
3701 		err = got_error_from_errno("close");
3702 	if (blob1)
3703 		got_object_blob_close(blob1);
3704 	if (fd2 != -1 && close(fd2) == -1 && err == NULL)
3705 		err = got_error_from_errno("close");
3706 	got_object_blob_close(blob2);
3707 	if (f1 && fclose(f1) == EOF && err == NULL)
3708 		err = got_error_from_errno("fclose");
3709 	if (f2 && fclose(f2) == EOF && err == NULL)
3710 		err = got_error_from_errno("fclose");
3711 	return err;
3712 }
3713 
3714 static const struct got_error *
3715 diff_trees(struct got_object_id *tree_id1, struct got_object_id *tree_id2,
3716     const char *path, int diff_context, int ignore_whitespace,
3717     int force_text_diff, struct got_diffstat_cb_arg *dsa,
3718     struct got_repository *repo, FILE *outfile)
3719 {
3720 	const struct got_error *err = NULL;
3721 	struct got_tree_object *tree1 = NULL, *tree2 = NULL;
3722 	struct got_diff_blob_output_unidiff_arg arg;
3723 	FILE *f1 = NULL, *f2 = NULL;
3724 	int fd1 = -1, fd2 = -1;
3725 
3726 	if (tree_id1) {
3727 		err = got_object_open_as_tree(&tree1, repo, tree_id1);
3728 		if (err)
3729 			goto done;
3730 		fd1 = got_opentempfd();
3731 		if (fd1 == -1) {
3732 			err = got_error_from_errno("got_opentempfd");
3733 			goto done;
3734 		}
3735 	}
3736 
3737 	err = got_object_open_as_tree(&tree2, repo, tree_id2);
3738 	if (err)
3739 		goto done;
3740 
3741 	f1 = got_opentemp();
3742 	if (f1 == NULL) {
3743 		err = got_error_from_errno("got_opentemp");
3744 		goto done;
3745 	}
3746 
3747 	f2 = got_opentemp();
3748 	if (f2 == NULL) {
3749 		err = got_error_from_errno("got_opentemp");
3750 		goto done;
3751 	}
3752 	fd2 = got_opentempfd();
3753 	if (fd2 == -1) {
3754 		err = got_error_from_errno("got_opentempfd");
3755 		goto done;
3756 	}
3757 	arg.diff_context = diff_context;
3758 	arg.ignore_whitespace = ignore_whitespace;
3759 	arg.force_text_diff = force_text_diff;
3760 	arg.diffstat = dsa;
3761 	arg.diff_algo = GOT_DIFF_ALGORITHM_PATIENCE;
3762 	arg.outfile = outfile;
3763 	arg.lines = NULL;
3764 	arg.nlines = 0;
3765 	while (path[0] == '/')
3766 		path++;
3767 	err = got_diff_tree(tree1, tree2, f1, f2, fd1, fd2, path, path, repo,
3768 	    got_diff_blob_output_unidiff, &arg, 1);
3769 done:
3770 	if (tree1)
3771 		got_object_tree_close(tree1);
3772 	if (tree2)
3773 		got_object_tree_close(tree2);
3774 	if (f1 && fclose(f1) == EOF && err == NULL)
3775 		err = got_error_from_errno("fclose");
3776 	if (f2 && fclose(f2) == EOF && err == NULL)
3777 		err = got_error_from_errno("fclose");
3778 	if (fd1 != -1 && close(fd1) == -1 && err == NULL)
3779 		err = got_error_from_errno("close");
3780 	if (fd2 != -1 && close(fd2) == -1 && err == NULL)
3781 		err = got_error_from_errno("close");
3782 	return err;
3783 }
3784 
3785 static const struct got_error *
3786 get_changed_paths(struct got_pathlist_head *paths,
3787     struct got_commit_object *commit, struct got_repository *repo,
3788     struct got_diffstat_cb_arg *dsa)
3789 {
3790 	const struct got_error *err = NULL;
3791 	struct got_object_id *tree_id1 = NULL, *tree_id2 = NULL;
3792 	struct got_tree_object *tree1 = NULL, *tree2 = NULL;
3793 	struct got_object_qid *qid;
3794 	got_diff_blob_cb cb = got_diff_tree_collect_changed_paths;
3795 	FILE *f1 = NULL, *f2 = NULL;
3796 	int fd1 = -1, fd2 = -1;
3797 
3798 	if (dsa) {
3799 		cb = got_diff_tree_compute_diffstat;
3800 
3801 		f1 = got_opentemp();
3802 		if (f1 == NULL) {
3803 			err = got_error_from_errno("got_opentemp");
3804 			goto done;
3805 		}
3806 		f2 = got_opentemp();
3807 		if (f2 == NULL) {
3808 			err = got_error_from_errno("got_opentemp");
3809 			goto done;
3810 		}
3811 		fd1 = got_opentempfd();
3812 		if (fd1 == -1) {
3813 			err = got_error_from_errno("got_opentempfd");
3814 			goto done;
3815 		}
3816 		fd2 = got_opentempfd();
3817 		if (fd2 == -1) {
3818 			err = got_error_from_errno("got_opentempfd");
3819 			goto done;
3820 		}
3821 	}
3822 
3823 	qid = STAILQ_FIRST(got_object_commit_get_parent_ids(commit));
3824 	if (qid != NULL) {
3825 		struct got_commit_object *pcommit;
3826 		err = got_object_open_as_commit(&pcommit, repo,
3827 		    &qid->id);
3828 		if (err)
3829 			return err;
3830 
3831 		tree_id1 = got_object_id_dup(
3832 		    got_object_commit_get_tree_id(pcommit));
3833 		if (tree_id1 == NULL) {
3834 			got_object_commit_close(pcommit);
3835 			return got_error_from_errno("got_object_id_dup");
3836 		}
3837 		got_object_commit_close(pcommit);
3838 
3839 	}
3840 
3841 	if (tree_id1) {
3842 		err = got_object_open_as_tree(&tree1, repo, tree_id1);
3843 		if (err)
3844 			goto done;
3845 	}
3846 
3847 	tree_id2 = got_object_commit_get_tree_id(commit);
3848 	err = got_object_open_as_tree(&tree2, repo, tree_id2);
3849 	if (err)
3850 		goto done;
3851 
3852 	err = got_diff_tree(tree1, tree2, f1, f2, fd1, fd2, "", "", repo,
3853 	    cb, dsa ? (void *)dsa : paths, dsa ? 1 : 0);
3854 done:
3855 	if (tree1)
3856 		got_object_tree_close(tree1);
3857 	if (tree2)
3858 		got_object_tree_close(tree2);
3859 	if (fd1 != -1 && close(fd1) == -1 && err == NULL)
3860 		err = got_error_from_errno("close");
3861 	if (fd2 != -1 && close(fd2) == -1 && err == NULL)
3862 		err = got_error_from_errno("close");
3863 	if (f1 && fclose(f1) == EOF && err == NULL)
3864 		err = got_error_from_errno("fclose");
3865 	if (f2 && fclose(f2) == EOF && err == NULL)
3866 		err = got_error_from_errno("fclose");
3867 	free(tree_id1);
3868 	return err;
3869 }
3870 
3871 static const struct got_error *
3872 print_patch(struct got_commit_object *commit, struct got_object_id *id,
3873     const char *path, int diff_context, struct got_diffstat_cb_arg *dsa,
3874     struct got_repository *repo, FILE *outfile)
3875 {
3876 	const struct got_error *err = NULL;
3877 	struct got_commit_object *pcommit = NULL;
3878 	char *id_str1 = NULL, *id_str2 = NULL;
3879 	struct got_object_id *obj_id1 = NULL, *obj_id2 = NULL;
3880 	struct got_object_qid *qid;
3881 
3882 	qid = STAILQ_FIRST(got_object_commit_get_parent_ids(commit));
3883 	if (qid != NULL) {
3884 		err = got_object_open_as_commit(&pcommit, repo,
3885 		    &qid->id);
3886 		if (err)
3887 			return err;
3888 		err = got_object_id_str(&id_str1, &qid->id);
3889 		if (err)
3890 			goto done;
3891 	}
3892 
3893 	err = got_object_id_str(&id_str2, id);
3894 	if (err)
3895 		goto done;
3896 
3897 	if (path && path[0] != '\0') {
3898 		int obj_type;
3899 		err = got_object_id_by_path(&obj_id2, repo, commit, path);
3900 		if (err)
3901 			goto done;
3902 		if (pcommit) {
3903 			err = got_object_id_by_path(&obj_id1, repo,
3904 			    pcommit, path);
3905 			if (err) {
3906 				if (err->code != GOT_ERR_NO_TREE_ENTRY) {
3907 					free(obj_id2);
3908 					goto done;
3909 				}
3910 			}
3911 		}
3912 		err = got_object_get_type(&obj_type, repo, obj_id2);
3913 		if (err) {
3914 			free(obj_id2);
3915 			goto done;
3916 		}
3917 		fprintf(outfile,
3918 		    "diff %s %s\n", id_str1 ? id_str1 : "/dev/null", id_str2);
3919 		fprintf(outfile, "commit - %s\n",
3920 		    id_str1 ? id_str1 : "/dev/null");
3921 		fprintf(outfile, "commit + %s\n", id_str2);
3922 		switch (obj_type) {
3923 		case GOT_OBJ_TYPE_BLOB:
3924 			err = diff_blobs(obj_id1, obj_id2, path, diff_context,
3925 			    0, 0, dsa, repo, outfile);
3926 			break;
3927 		case GOT_OBJ_TYPE_TREE:
3928 			err = diff_trees(obj_id1, obj_id2, path, diff_context,
3929 			    0, 0, dsa, repo, outfile);
3930 			break;
3931 		default:
3932 			err = got_error(GOT_ERR_OBJ_TYPE);
3933 			break;
3934 		}
3935 		free(obj_id1);
3936 		free(obj_id2);
3937 	} else {
3938 		obj_id2 = got_object_commit_get_tree_id(commit);
3939 		if (pcommit)
3940 			obj_id1 = got_object_commit_get_tree_id(pcommit);
3941 		fprintf(outfile,
3942 		    "diff %s %s\n", id_str1 ? id_str1 : "/dev/null", id_str2);
3943 		fprintf(outfile, "commit - %s\n",
3944 		    id_str1 ? id_str1 : "/dev/null");
3945 		fprintf(outfile, "commit + %s\n", id_str2);
3946 		err = diff_trees(obj_id1, obj_id2, "", diff_context, 0, 0,
3947 		    dsa, repo, outfile);
3948 	}
3949 done:
3950 	free(id_str1);
3951 	free(id_str2);
3952 	if (pcommit)
3953 		got_object_commit_close(pcommit);
3954 	return err;
3955 }
3956 
3957 static char *
3958 get_datestr(time_t *time, char *datebuf)
3959 {
3960 	struct tm mytm, *tm;
3961 	char *p, *s;
3962 
3963 	tm = gmtime_r(time, &mytm);
3964 	if (tm == NULL)
3965 		return NULL;
3966 	s = asctime_r(tm, datebuf);
3967 	if (s == NULL)
3968 		return NULL;
3969 	p = strchr(s, '\n');
3970 	if (p)
3971 		*p = '\0';
3972 	return s;
3973 }
3974 
3975 static const struct got_error *
3976 match_commit(int *have_match, struct got_object_id *id,
3977     struct got_commit_object *commit, regex_t *regex)
3978 {
3979 	const struct got_error *err = NULL;
3980 	regmatch_t regmatch;
3981 	char *id_str = NULL, *logmsg = NULL;
3982 
3983 	*have_match = 0;
3984 
3985 	err = got_object_id_str(&id_str, id);
3986 	if (err)
3987 		return err;
3988 
3989 	err = got_object_commit_get_logmsg(&logmsg, commit);
3990 	if (err)
3991 		goto done;
3992 
3993 	if (regexec(regex, got_object_commit_get_author(commit), 1,
3994 	    &regmatch, 0) == 0 ||
3995 	    regexec(regex, got_object_commit_get_committer(commit), 1,
3996 	    &regmatch, 0) == 0 ||
3997 	    regexec(regex, id_str, 1, &regmatch, 0) == 0 ||
3998 	    regexec(regex, logmsg, 1, &regmatch, 0) == 0)
3999 		*have_match = 1;
4000 done:
4001 	free(id_str);
4002 	free(logmsg);
4003 	return err;
4004 }
4005 
4006 static void
4007 match_changed_paths(int *have_match, struct got_pathlist_head *changed_paths,
4008     regex_t *regex)
4009 {
4010 	regmatch_t regmatch;
4011 	struct got_pathlist_entry *pe;
4012 
4013 	*have_match = 0;
4014 
4015 	TAILQ_FOREACH(pe, changed_paths, entry) {
4016 		if (regexec(regex, pe->path, 1, &regmatch, 0) == 0) {
4017 			*have_match = 1;
4018 			break;
4019 		}
4020 	}
4021 }
4022 
4023 static const struct got_error *
4024 match_patch(int *have_match, struct got_commit_object *commit,
4025     struct got_object_id *id, const char *path, int diff_context,
4026     struct got_repository *repo, regex_t *regex, FILE *f)
4027 {
4028 	const struct got_error *err = NULL;
4029 	char *line = NULL;
4030 	size_t linesize = 0;
4031 	regmatch_t regmatch;
4032 
4033 	*have_match = 0;
4034 
4035 	err = got_opentemp_truncate(f);
4036 	if (err)
4037 		return err;
4038 
4039 	err = print_patch(commit, id, path, diff_context, NULL, repo, f);
4040 	if (err)
4041 		goto done;
4042 
4043 	if (fseeko(f, 0L, SEEK_SET) == -1) {
4044 		err = got_error_from_errno("fseeko");
4045 		goto done;
4046 	}
4047 
4048 	while (getline(&line, &linesize, f) != -1) {
4049 		if (regexec(regex, line, 1, &regmatch, 0) == 0) {
4050 			*have_match = 1;
4051 			break;
4052 		}
4053 	}
4054 done:
4055 	free(line);
4056 	return err;
4057 }
4058 
4059 #define GOT_COMMIT_SEP_STR "-----------------------------------------------\n"
4060 
4061 static const struct got_error*
4062 build_refs_str(char **refs_str, struct got_reflist_head *refs,
4063     struct got_object_id *id, struct got_repository *repo,
4064     int local_only)
4065 {
4066 	static const struct got_error *err = NULL;
4067 	struct got_reflist_entry *re;
4068 	char *s;
4069 	const char *name;
4070 
4071 	*refs_str = NULL;
4072 
4073 	TAILQ_FOREACH(re, refs, entry) {
4074 		struct got_tag_object *tag = NULL;
4075 		struct got_object_id *ref_id;
4076 		int cmp;
4077 
4078 		name = got_ref_get_name(re->ref);
4079 		if (strcmp(name, GOT_REF_HEAD) == 0)
4080 			continue;
4081 		if (strncmp(name, "refs/", 5) == 0)
4082 			name += 5;
4083 		if (strncmp(name, "got/", 4) == 0)
4084 			continue;
4085 		if (strncmp(name, "heads/", 6) == 0)
4086 			name += 6;
4087 		if (strncmp(name, "remotes/", 8) == 0) {
4088 			if (local_only)
4089 				continue;
4090 			name += 8;
4091 			s = strstr(name, "/" GOT_REF_HEAD);
4092 			if (s != NULL && s[strlen(s)] == '\0')
4093 				continue;
4094 		}
4095 		err = got_ref_resolve(&ref_id, repo, re->ref);
4096 		if (err)
4097 			break;
4098 		if (strncmp(name, "tags/", 5) == 0) {
4099 			err = got_object_open_as_tag(&tag, repo, ref_id);
4100 			if (err) {
4101 				if (err->code != GOT_ERR_OBJ_TYPE) {
4102 					free(ref_id);
4103 					break;
4104 				}
4105 				/* Ref points at something other than a tag. */
4106 				err = NULL;
4107 				tag = NULL;
4108 			}
4109 		}
4110 		cmp = got_object_id_cmp(tag ?
4111 		    got_object_tag_get_object_id(tag) : ref_id, id);
4112 		free(ref_id);
4113 		if (tag)
4114 			got_object_tag_close(tag);
4115 		if (cmp != 0)
4116 			continue;
4117 		s = *refs_str;
4118 		if (asprintf(refs_str, "%s%s%s", s ? s : "",
4119 		    s ? ", " : "", name) == -1) {
4120 			err = got_error_from_errno("asprintf");
4121 			free(s);
4122 			*refs_str = NULL;
4123 			break;
4124 		}
4125 		free(s);
4126 	}
4127 
4128 	return err;
4129 }
4130 
4131 static const struct got_error *
4132 print_commit_oneline(struct got_commit_object *commit, struct got_object_id *id,
4133     struct got_repository *repo, struct got_reflist_object_id_map *refs_idmap)
4134 {
4135 	const struct got_error *err = NULL;
4136 	char *ref_str = NULL, *id_str = NULL, *logmsg0 = NULL;
4137 	char *comma, *s, *nl;
4138 	struct got_reflist_head *refs;
4139 	char datebuf[12]; /* YYYY-MM-DD + SPACE + NUL */
4140 	struct tm tm;
4141 	time_t committer_time;
4142 
4143 	refs = got_reflist_object_id_map_lookup(refs_idmap, id);
4144 	if (refs) {
4145 		err = build_refs_str(&ref_str, refs, id, repo, 1);
4146 		if (err)
4147 			return err;
4148 
4149 		/* Display the first matching ref only. */
4150 		if (ref_str && (comma = strchr(ref_str, ',')) != NULL)
4151 			*comma = '\0';
4152 	}
4153 
4154 	if (ref_str == NULL) {
4155 		err = got_object_id_str(&id_str, id);
4156 		if (err)
4157 			return err;
4158 	}
4159 
4160 	committer_time = got_object_commit_get_committer_time(commit);
4161 	if (gmtime_r(&committer_time, &tm) == NULL) {
4162 		err = got_error_from_errno("gmtime_r");
4163 		goto done;
4164 	}
4165 	if (strftime(datebuf, sizeof(datebuf), "%G-%m-%d ", &tm) == 0) {
4166 		err = got_error(GOT_ERR_NO_SPACE);
4167 		goto done;
4168 	}
4169 
4170 	err = got_object_commit_get_logmsg(&logmsg0, commit);
4171 	if (err)
4172 		goto done;
4173 
4174 	s = logmsg0;
4175 	while (isspace((unsigned char)s[0]))
4176 		s++;
4177 
4178 	nl = strchr(s, '\n');
4179 	if (nl) {
4180 		*nl = '\0';
4181 	}
4182 
4183 	if (ref_str)
4184 		printf("%s%-7s %s\n", datebuf, ref_str, s);
4185 	else
4186 		printf("%s%.7s %s\n", datebuf, id_str, s);
4187 
4188 	if (fflush(stdout) != 0 && err == NULL)
4189 		err = got_error_from_errno("fflush");
4190 done:
4191 	free(id_str);
4192 	free(ref_str);
4193 	free(logmsg0);
4194 	return err;
4195 }
4196 
4197 static const struct got_error *
4198 print_diffstat(struct got_diffstat_cb_arg *dsa, const char *header)
4199 {
4200 	struct got_pathlist_entry *pe;
4201 
4202 	if (header != NULL)
4203 		printf("%s\n", header);
4204 
4205 	TAILQ_FOREACH(pe, dsa->paths, entry) {
4206 		struct got_diff_changed_path *cp = pe->data;
4207 		int pad = dsa->max_path_len - pe->path_len + 1;
4208 
4209 		printf(" %c  %s%*c | %*d+ %*d-\n", cp->status, pe->path, pad,
4210 		    ' ', dsa->add_cols + 1, cp->add, dsa->rm_cols + 1, cp->rm);
4211 	}
4212 	printf("\n%d file%s changed, %d insertion%s(+), %d deletion%s(-)\n\n",
4213 	    dsa->nfiles, dsa->nfiles > 1 ? "s" : "", dsa->ins,
4214 	    dsa->ins != 1 ? "s" : "", dsa->del, dsa->del != 1 ? "s" : "");
4215 
4216 	if (fflush(stdout) != 0)
4217 		return got_error_from_errno("fflush");
4218 
4219 	return NULL;
4220 }
4221 
4222 static const struct got_error *
4223 printfile(FILE *f)
4224 {
4225 	char	buf[8192];
4226 	size_t	r;
4227 
4228 	if (fseeko(f, 0L, SEEK_SET) == -1)
4229 		return got_error_from_errno("fseek");
4230 
4231 	for (;;) {
4232 		r = fread(buf, 1, sizeof(buf), f);
4233 		if (r == 0) {
4234 			if (ferror(f))
4235 				return got_error_from_errno("fread");
4236 			if (feof(f))
4237 				break;
4238 		}
4239 		if (fwrite(buf, 1, r, stdout) != r)
4240 			return got_ferror(stdout, GOT_ERR_IO);
4241 	}
4242 
4243 	return NULL;
4244 }
4245 
4246 static const struct got_error *
4247 print_commit(struct got_commit_object *commit, struct got_object_id *id,
4248     struct got_repository *repo, const char *path,
4249     struct got_pathlist_head *changed_paths,
4250     struct got_diffstat_cb_arg *diffstat, int show_patch, int diff_context,
4251     struct got_reflist_object_id_map *refs_idmap, const char *custom_refs_str,
4252     const char *prefix)
4253 {
4254 	const struct got_error *err = NULL;
4255 	FILE *f = NULL;
4256 	char *id_str, *datestr, *logmsg0, *logmsg, *line;
4257 	char datebuf[26];
4258 	time_t committer_time;
4259 	const char *author, *committer;
4260 	char *refs_str = NULL;
4261 
4262 	err = got_object_id_str(&id_str, id);
4263 	if (err)
4264 		return err;
4265 
4266 	if (custom_refs_str == NULL) {
4267 		struct got_reflist_head *refs;
4268 		refs = got_reflist_object_id_map_lookup(refs_idmap, id);
4269 		if (refs) {
4270 			err = build_refs_str(&refs_str, refs, id, repo, 0);
4271 			if (err)
4272 				goto done;
4273 		}
4274 	}
4275 
4276 	printf(GOT_COMMIT_SEP_STR);
4277 	if (custom_refs_str)
4278 		printf("%s %s (%s)\n", prefix ? prefix : "commit", id_str,
4279 		    custom_refs_str);
4280 	else
4281 		printf("%s %s%s%s%s\n", prefix ? prefix : "commit", id_str,
4282 		    refs_str ? " (" : "", refs_str ? refs_str : "",
4283 		    refs_str ? ")" : "");
4284 	free(id_str);
4285 	id_str = NULL;
4286 	free(refs_str);
4287 	refs_str = NULL;
4288 	printf("from: %s\n", got_object_commit_get_author(commit));
4289 	author = got_object_commit_get_author(commit);
4290 	committer = got_object_commit_get_committer(commit);
4291 	if (strcmp(author, committer) != 0)
4292 		printf("via: %s\n", committer);
4293 	committer_time = got_object_commit_get_committer_time(commit);
4294 	datestr = get_datestr(&committer_time, datebuf);
4295 	if (datestr)
4296 		printf("date: %s UTC\n", datestr);
4297 	if (got_object_commit_get_nparents(commit) > 1) {
4298 		const struct got_object_id_queue *parent_ids;
4299 		struct got_object_qid *qid;
4300 		int n = 1;
4301 		parent_ids = got_object_commit_get_parent_ids(commit);
4302 		STAILQ_FOREACH(qid, parent_ids, entry) {
4303 			err = got_object_id_str(&id_str, &qid->id);
4304 			if (err)
4305 				goto done;
4306 			printf("parent %d: %s\n", n++, id_str);
4307 			free(id_str);
4308 			id_str = NULL;
4309 		}
4310 	}
4311 
4312 	err = got_object_commit_get_logmsg(&logmsg0, commit);
4313 	if (err)
4314 		goto done;
4315 
4316 	logmsg = logmsg0;
4317 	do {
4318 		line = strsep(&logmsg, "\n");
4319 		if (line)
4320 			printf(" %s\n", line);
4321 	} while (line);
4322 	free(logmsg0);
4323 
4324 	if (changed_paths && diffstat == NULL) {
4325 		struct got_pathlist_entry *pe;
4326 
4327 		TAILQ_FOREACH(pe, changed_paths, entry) {
4328 			struct got_diff_changed_path *cp = pe->data;
4329 
4330 			printf(" %c  %s\n", cp->status, pe->path);
4331 		}
4332 		printf("\n");
4333 	}
4334 	if (show_patch) {
4335 		if (diffstat) {
4336 			f = got_opentemp();
4337 			if (f == NULL) {
4338 				err = got_error_from_errno("got_opentemp");
4339 				goto done;
4340 			}
4341 		}
4342 
4343 		err = print_patch(commit, id, path, diff_context, diffstat,
4344 		    repo, diffstat == NULL ? stdout : f);
4345 		if (err)
4346 			goto done;
4347 	}
4348 	if (diffstat) {
4349 		err = print_diffstat(diffstat, NULL);
4350 		if (err)
4351 			goto done;
4352 		if (show_patch) {
4353 			err = printfile(f);
4354 			if (err)
4355 				goto done;
4356 		}
4357 	}
4358 	if (show_patch)
4359 		printf("\n");
4360 
4361 	if (fflush(stdout) != 0 && err == NULL)
4362 		err = got_error_from_errno("fflush");
4363 done:
4364 	if (f && fclose(f) == EOF && err == NULL)
4365 		err = got_error_from_errno("fclose");
4366 	free(id_str);
4367 	free(refs_str);
4368 	return err;
4369 }
4370 
4371 static const struct got_error *
4372 print_commits(struct got_object_id *root_id, struct got_object_id *end_id,
4373     struct got_repository *repo, const char *path, int show_changed_paths,
4374     int show_diffstat, int show_patch, const char *search_pattern,
4375     int diff_context, int limit, int log_branches, int reverse_display_order,
4376     struct got_reflist_object_id_map *refs_idmap, int one_line,
4377     FILE *tmpfile)
4378 {
4379 	const struct got_error *err;
4380 	struct got_commit_graph *graph;
4381 	regex_t regex;
4382 	int have_match;
4383 	struct got_object_id_queue reversed_commits;
4384 	struct got_object_qid *qid;
4385 	struct got_commit_object *commit;
4386 	struct got_pathlist_head changed_paths;
4387 
4388 	STAILQ_INIT(&reversed_commits);
4389 	TAILQ_INIT(&changed_paths);
4390 
4391 	if (search_pattern && regcomp(&regex, search_pattern,
4392 	    REG_EXTENDED | REG_NOSUB | REG_NEWLINE))
4393 		return got_error_msg(GOT_ERR_REGEX, search_pattern);
4394 
4395 	err = got_commit_graph_open(&graph, path, !log_branches);
4396 	if (err)
4397 		return err;
4398 	err = got_commit_graph_iter_start(graph, root_id, repo,
4399 	    check_cancelled, NULL);
4400 	if (err)
4401 		goto done;
4402 	for (;;) {
4403 		struct got_object_id id;
4404 		struct got_diffstat_cb_arg dsa = { 0, 0, 0, 0, 0, 0,
4405 		    &changed_paths, 0, 0, GOT_DIFF_ALGORITHM_PATIENCE };
4406 
4407 		if (sigint_received || sigpipe_received)
4408 			break;
4409 
4410 		err = got_commit_graph_iter_next(&id, graph, repo,
4411 		    check_cancelled, NULL);
4412 		if (err) {
4413 			if (err->code == GOT_ERR_ITER_COMPLETED)
4414 				err = NULL;
4415 			break;
4416 		}
4417 
4418 		err = got_object_open_as_commit(&commit, repo, &id);
4419 		if (err)
4420 			break;
4421 
4422 		if ((show_changed_paths || (show_diffstat && !show_patch))
4423 		    && !reverse_display_order) {
4424 			err = get_changed_paths(&changed_paths, commit, repo,
4425 			    show_diffstat ? &dsa : NULL);
4426 			if (err)
4427 				break;
4428 		}
4429 
4430 		if (search_pattern) {
4431 			err = match_commit(&have_match, &id, commit, &regex);
4432 			if (err) {
4433 				got_object_commit_close(commit);
4434 				break;
4435 			}
4436 			if (have_match == 0 && show_changed_paths)
4437 				match_changed_paths(&have_match,
4438 				    &changed_paths, &regex);
4439 			if (have_match == 0 && show_patch) {
4440 				err = match_patch(&have_match, commit, &id,
4441 				    path, diff_context, repo, &regex, tmpfile);
4442 				if (err)
4443 					break;
4444 			}
4445 			if (have_match == 0) {
4446 				got_object_commit_close(commit);
4447 				got_pathlist_free(&changed_paths,
4448 				    GOT_PATHLIST_FREE_ALL);
4449 				continue;
4450 			}
4451 		}
4452 
4453 		if (reverse_display_order) {
4454 			err = got_object_qid_alloc(&qid, &id);
4455 			if (err)
4456 				break;
4457 			STAILQ_INSERT_HEAD(&reversed_commits, qid, entry);
4458 			got_object_commit_close(commit);
4459 		} else {
4460 			if (one_line)
4461 				err = print_commit_oneline(commit, &id,
4462 				    repo, refs_idmap);
4463 			else
4464 				err = print_commit(commit, &id, repo, path,
4465 				    (show_changed_paths || show_diffstat) ?
4466 				    &changed_paths : NULL,
4467 				    show_diffstat ? &dsa : NULL, show_patch,
4468 				    diff_context, refs_idmap, NULL, NULL);
4469 			got_object_commit_close(commit);
4470 			if (err)
4471 				break;
4472 		}
4473 		if ((limit && --limit == 0) ||
4474 		    (end_id && got_object_id_cmp(&id, end_id) == 0))
4475 			break;
4476 
4477 		got_pathlist_free(&changed_paths, GOT_PATHLIST_FREE_ALL);
4478 	}
4479 	if (reverse_display_order) {
4480 		STAILQ_FOREACH(qid, &reversed_commits, entry) {
4481 			struct got_diffstat_cb_arg dsa = { 0, 0, 0, 0, 0, 0,
4482 			    &changed_paths, 0, 0, GOT_DIFF_ALGORITHM_PATIENCE };
4483 
4484 			err = got_object_open_as_commit(&commit, repo,
4485 			    &qid->id);
4486 			if (err)
4487 				break;
4488 			if (show_changed_paths ||
4489 			    (show_diffstat && !show_patch)) {
4490 				err = get_changed_paths(&changed_paths, commit,
4491 				    repo, show_diffstat ? &dsa : NULL);
4492 				if (err)
4493 					break;
4494 			}
4495 			if (one_line)
4496 				err = print_commit_oneline(commit, &qid->id,
4497 				    repo, refs_idmap);
4498 			else
4499 				err = print_commit(commit, &qid->id, repo, path,
4500 				    (show_changed_paths || show_diffstat) ?
4501 				    &changed_paths : NULL,
4502 				    show_diffstat ? &dsa : NULL, show_patch,
4503 				    diff_context, refs_idmap, NULL, NULL);
4504 			got_object_commit_close(commit);
4505 			if (err)
4506 				break;
4507 			got_pathlist_free(&changed_paths, GOT_PATHLIST_FREE_ALL);
4508 		}
4509 	}
4510 done:
4511 	while (!STAILQ_EMPTY(&reversed_commits)) {
4512 		qid = STAILQ_FIRST(&reversed_commits);
4513 		STAILQ_REMOVE_HEAD(&reversed_commits, entry);
4514 		got_object_qid_free(qid);
4515 	}
4516 	got_pathlist_free(&changed_paths, GOT_PATHLIST_FREE_ALL);
4517 	if (search_pattern)
4518 		regfree(&regex);
4519 	got_commit_graph_close(graph);
4520 	return err;
4521 }
4522 
4523 __dead static void
4524 usage_log(void)
4525 {
4526 	fprintf(stderr, "usage: %s log [-bdPpRs] [-C number] [-c commit] "
4527 	    "[-l N] [-r repository-path] [-S search-pattern] [-x commit] "
4528 	    "[path]\n", getprogname());
4529 	exit(1);
4530 }
4531 
4532 static int
4533 get_default_log_limit(void)
4534 {
4535 	const char *got_default_log_limit;
4536 	long long n;
4537 	const char *errstr;
4538 
4539 	got_default_log_limit = getenv("GOT_LOG_DEFAULT_LIMIT");
4540 	if (got_default_log_limit == NULL)
4541 		return 0;
4542 	n = strtonum(got_default_log_limit, 0, INT_MAX, &errstr);
4543 	if (errstr != NULL)
4544 		return 0;
4545 	return n;
4546 }
4547 
4548 static const struct got_error *
4549 cmd_log(int argc, char *argv[])
4550 {
4551 	const struct got_error *error;
4552 	struct got_repository *repo = NULL;
4553 	struct got_worktree *worktree = NULL;
4554 	struct got_object_id *start_id = NULL, *end_id = NULL;
4555 	char *repo_path = NULL, *path = NULL, *cwd = NULL, *in_repo_path = NULL;
4556 	const char *start_commit = NULL, *end_commit = NULL;
4557 	const char *search_pattern = NULL;
4558 	int diff_context = -1, ch;
4559 	int show_changed_paths = 0, show_patch = 0, limit = 0, log_branches = 0;
4560 	int show_diffstat = 0, reverse_display_order = 0, one_line = 0;
4561 	const char *errstr;
4562 	struct got_reflist_head refs;
4563 	struct got_reflist_object_id_map *refs_idmap = NULL;
4564 	FILE *tmpfile = NULL;
4565 	int *pack_fds = NULL;
4566 
4567 	TAILQ_INIT(&refs);
4568 
4569 #ifndef PROFILE
4570 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
4571 	    NULL)
4572 	    == -1)
4573 		err(1, "pledge");
4574 #endif
4575 
4576 	limit = get_default_log_limit();
4577 
4578 	while ((ch = getopt(argc, argv, "bC:c:dl:PpRr:S:sx:")) != -1) {
4579 		switch (ch) {
4580 		case 'b':
4581 			log_branches = 1;
4582 			break;
4583 		case 'C':
4584 			diff_context = strtonum(optarg, 0, GOT_DIFF_MAX_CONTEXT,
4585 			    &errstr);
4586 			if (errstr != NULL)
4587 				errx(1, "number of context lines is %s: %s",
4588 				    errstr, optarg);
4589 			break;
4590 		case 'c':
4591 			start_commit = optarg;
4592 			break;
4593 		case 'd':
4594 			show_diffstat = 1;
4595 			break;
4596 		case 'l':
4597 			limit = strtonum(optarg, 0, INT_MAX, &errstr);
4598 			if (errstr != NULL)
4599 				errx(1, "number of commits is %s: %s",
4600 				    errstr, optarg);
4601 			break;
4602 		case 'P':
4603 			show_changed_paths = 1;
4604 			break;
4605 		case 'p':
4606 			show_patch = 1;
4607 			break;
4608 		case 'R':
4609 			reverse_display_order = 1;
4610 			break;
4611 		case 'r':
4612 			repo_path = realpath(optarg, NULL);
4613 			if (repo_path == NULL)
4614 				return got_error_from_errno2("realpath",
4615 				    optarg);
4616 			got_path_strip_trailing_slashes(repo_path);
4617 			break;
4618 		case 'S':
4619 			search_pattern = optarg;
4620 			break;
4621 		case 's':
4622 			one_line = 1;
4623 			break;
4624 		case 'x':
4625 			end_commit = optarg;
4626 			break;
4627 		default:
4628 			usage_log();
4629 			/* NOTREACHED */
4630 		}
4631 	}
4632 
4633 	argc -= optind;
4634 	argv += optind;
4635 
4636 	if (diff_context == -1)
4637 		diff_context = 3;
4638 	else if (!show_patch)
4639 		errx(1, "-C requires -p");
4640 
4641 	if (one_line && (show_patch || show_changed_paths || show_diffstat))
4642 		errx(1, "cannot use -s with -d, -p or -P");
4643 
4644 	cwd = getcwd(NULL, 0);
4645 	if (cwd == NULL) {
4646 		error = got_error_from_errno("getcwd");
4647 		goto done;
4648 	}
4649 
4650 	error = got_repo_pack_fds_open(&pack_fds);
4651 	if (error != NULL)
4652 		goto done;
4653 
4654 	if (repo_path == NULL) {
4655 		error = got_worktree_open(&worktree, cwd);
4656 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
4657 			goto done;
4658 		error = NULL;
4659 	}
4660 
4661 	if (argc == 1) {
4662 		if (worktree) {
4663 			error = got_worktree_resolve_path(&path, worktree,
4664 			    argv[0]);
4665 			if (error)
4666 				goto done;
4667 		} else {
4668 			path = strdup(argv[0]);
4669 			if (path == NULL) {
4670 				error = got_error_from_errno("strdup");
4671 				goto done;
4672 			}
4673 		}
4674 	} else if (argc != 0)
4675 		usage_log();
4676 
4677 	if (repo_path == NULL) {
4678 		repo_path = worktree ?
4679 		    strdup(got_worktree_get_repo_path(worktree)) : strdup(cwd);
4680 	}
4681 	if (repo_path == NULL) {
4682 		error = got_error_from_errno("strdup");
4683 		goto done;
4684 	}
4685 
4686 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
4687 	if (error != NULL)
4688 		goto done;
4689 
4690 	error = apply_unveil(got_repo_get_path(repo), 1,
4691 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
4692 	if (error)
4693 		goto done;
4694 
4695 	error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name, NULL);
4696 	if (error)
4697 		goto done;
4698 
4699 	error = got_reflist_object_id_map_create(&refs_idmap, &refs, repo);
4700 	if (error)
4701 		goto done;
4702 
4703 	if (start_commit == NULL) {
4704 		struct got_reference *head_ref;
4705 		struct got_commit_object *commit = NULL;
4706 		error = got_ref_open(&head_ref, repo,
4707 		    worktree ? got_worktree_get_head_ref_name(worktree)
4708 		    : GOT_REF_HEAD, 0);
4709 		if (error != NULL)
4710 			goto done;
4711 		error = got_ref_resolve(&start_id, repo, head_ref);
4712 		got_ref_close(head_ref);
4713 		if (error != NULL)
4714 			goto done;
4715 		error = got_object_open_as_commit(&commit, repo,
4716 		    start_id);
4717 		if (error != NULL)
4718 			goto done;
4719 		got_object_commit_close(commit);
4720 	} else {
4721 		error = got_repo_match_object_id(&start_id, NULL,
4722 		    start_commit, GOT_OBJ_TYPE_COMMIT, &refs, repo);
4723 		if (error != NULL)
4724 			goto done;
4725 	}
4726 	if (end_commit != NULL) {
4727 		error = got_repo_match_object_id(&end_id, NULL,
4728 		    end_commit, GOT_OBJ_TYPE_COMMIT, &refs, repo);
4729 		if (error != NULL)
4730 			goto done;
4731 	}
4732 
4733 	if (worktree) {
4734 		/*
4735 		 * If a path was specified on the command line it was resolved
4736 		 * to a path in the work tree above. Prepend the work tree's
4737 		 * path prefix to obtain the corresponding in-repository path.
4738 		 */
4739 		if (path) {
4740 			const char *prefix;
4741 			prefix = got_worktree_get_path_prefix(worktree);
4742 			if (asprintf(&in_repo_path, "%s%s%s", prefix,
4743 			    (path[0] != '\0') ? "/" : "", path) == -1) {
4744 				error = got_error_from_errno("asprintf");
4745 				goto done;
4746 			}
4747 		}
4748 	} else
4749 		error = got_repo_map_path(&in_repo_path, repo,
4750 		    path ? path : "");
4751 	if (error != NULL)
4752 		goto done;
4753 	if (in_repo_path) {
4754 		free(path);
4755 		path = in_repo_path;
4756 	}
4757 
4758 	if (worktree) {
4759 		/* Release work tree lock. */
4760 		got_worktree_close(worktree);
4761 		worktree = NULL;
4762 	}
4763 
4764 	if (search_pattern && show_patch) {
4765 		tmpfile = got_opentemp();
4766 		if (tmpfile == NULL) {
4767 			error = got_error_from_errno("got_opentemp");
4768 			goto done;
4769 		}
4770 	}
4771 
4772 	error = print_commits(start_id, end_id, repo, path ? path : "",
4773 	    show_changed_paths, show_diffstat, show_patch, search_pattern,
4774 	    diff_context, limit, log_branches, reverse_display_order,
4775 	    refs_idmap, one_line, tmpfile);
4776 done:
4777 	free(path);
4778 	free(repo_path);
4779 	free(cwd);
4780 	if (worktree)
4781 		got_worktree_close(worktree);
4782 	if (repo) {
4783 		const struct got_error *close_err = got_repo_close(repo);
4784 		if (error == NULL)
4785 			error = close_err;
4786 	}
4787 	if (pack_fds) {
4788 		const struct got_error *pack_err =
4789 		    got_repo_pack_fds_close(pack_fds);
4790 		if (error == NULL)
4791 			error = pack_err;
4792 	}
4793 	if (refs_idmap)
4794 		got_reflist_object_id_map_free(refs_idmap);
4795 	if (tmpfile && fclose(tmpfile) == EOF && error == NULL)
4796 		error = got_error_from_errno("fclose");
4797 	got_ref_list_free(&refs);
4798 	return error;
4799 }
4800 
4801 __dead static void
4802 usage_diff(void)
4803 {
4804 	fprintf(stderr, "usage: %s diff [-adPsw] [-C number] [-c commit] "
4805 	    "[-r repository-path] [object1 object2 | path ...]\n",
4806 	    getprogname());
4807 	exit(1);
4808 }
4809 
4810 struct print_diff_arg {
4811 	struct got_repository *repo;
4812 	struct got_worktree *worktree;
4813 	struct got_diffstat_cb_arg *diffstat;
4814 	int diff_context;
4815 	const char *id_str;
4816 	int header_shown;
4817 	int diff_staged;
4818 	enum got_diff_algorithm diff_algo;
4819 	int ignore_whitespace;
4820 	int force_text_diff;
4821 	FILE *f1;
4822 	FILE *f2;
4823 	FILE *outfile;
4824 };
4825 
4826 /*
4827  * Create a file which contains the target path of a symlink so we can feed
4828  * it as content to the diff engine.
4829  */
4830 static const struct got_error *
4831 get_symlink_target_file(int *fd, int dirfd, const char *de_name,
4832     const char *abspath)
4833 {
4834 	const struct got_error *err = NULL;
4835 	char target_path[PATH_MAX];
4836 	ssize_t target_len, outlen;
4837 
4838 	*fd = -1;
4839 
4840 	if (dirfd != -1) {
4841 		target_len = readlinkat(dirfd, de_name, target_path, PATH_MAX);
4842 		if (target_len == -1)
4843 			return got_error_from_errno2("readlinkat", abspath);
4844 	} else {
4845 		target_len = readlink(abspath, target_path, PATH_MAX);
4846 		if (target_len == -1)
4847 			return got_error_from_errno2("readlink", abspath);
4848 	}
4849 
4850 	*fd = got_opentempfd();
4851 	if (*fd == -1)
4852 		return got_error_from_errno("got_opentempfd");
4853 
4854 	outlen = write(*fd, target_path, target_len);
4855 	if (outlen == -1) {
4856 		err = got_error_from_errno("got_opentempfd");
4857 		goto done;
4858 	}
4859 
4860 	if (lseek(*fd, 0, SEEK_SET) == -1) {
4861 		err = got_error_from_errno2("lseek", abspath);
4862 		goto done;
4863 	}
4864 done:
4865 	if (err) {
4866 		close(*fd);
4867 		*fd = -1;
4868 	}
4869 	return err;
4870 }
4871 
4872 static const struct got_error *
4873 print_diff(void *arg, unsigned char status, unsigned char staged_status,
4874     const char *path, struct got_object_id *blob_id,
4875     struct got_object_id *staged_blob_id, struct got_object_id *commit_id,
4876     int dirfd, const char *de_name)
4877 {
4878 	struct print_diff_arg *a = arg;
4879 	const struct got_error *err = NULL;
4880 	struct got_blob_object *blob1 = NULL;
4881 	int fd = -1, fd1 = -1, fd2 = -1;
4882 	FILE *f2 = NULL;
4883 	char *abspath = NULL, *label1 = NULL;
4884 	struct stat sb;
4885 	off_t size1 = 0;
4886 	int f2_exists = 0;
4887 
4888 	memset(&sb, 0, sizeof(sb));
4889 
4890 	if (a->diff_staged) {
4891 		if (staged_status != GOT_STATUS_MODIFY &&
4892 		    staged_status != GOT_STATUS_ADD &&
4893 		    staged_status != GOT_STATUS_DELETE)
4894 			return NULL;
4895 	} else {
4896 		if (staged_status == GOT_STATUS_DELETE)
4897 			return NULL;
4898 		if (status == GOT_STATUS_NONEXISTENT)
4899 			return got_error_set_errno(ENOENT, path);
4900 		if (status != GOT_STATUS_MODIFY &&
4901 		    status != GOT_STATUS_ADD &&
4902 		    status != GOT_STATUS_DELETE &&
4903 		    status != GOT_STATUS_CONFLICT)
4904 			return NULL;
4905 	}
4906 
4907 	err = got_opentemp_truncate(a->f1);
4908 	if (err)
4909 		return got_error_from_errno("got_opentemp_truncate");
4910 	err = got_opentemp_truncate(a->f2);
4911 	if (err)
4912 		return got_error_from_errno("got_opentemp_truncate");
4913 
4914 	if (!a->header_shown) {
4915 		if (fprintf(a->outfile, "diff %s%s\n",
4916 		    a->diff_staged ? "-s " : "",
4917 		    got_worktree_get_root_path(a->worktree)) < 0) {
4918 			err = got_error_from_errno("fprintf");
4919 			goto done;
4920 		}
4921 		if (fprintf(a->outfile, "commit - %s\n", a->id_str) < 0) {
4922 			err = got_error_from_errno("fprintf");
4923 			goto done;
4924 		}
4925 		if (fprintf(a->outfile, "path + %s%s\n",
4926 		    got_worktree_get_root_path(a->worktree),
4927 		    a->diff_staged ? " (staged changes)" : "") < 0) {
4928 			err = got_error_from_errno("fprintf");
4929 			goto done;
4930 		}
4931 		a->header_shown = 1;
4932 	}
4933 
4934 	if (a->diff_staged) {
4935 		const char *label1 = NULL, *label2 = NULL;
4936 		switch (staged_status) {
4937 		case GOT_STATUS_MODIFY:
4938 			label1 = path;
4939 			label2 = path;
4940 			break;
4941 		case GOT_STATUS_ADD:
4942 			label2 = path;
4943 			break;
4944 		case GOT_STATUS_DELETE:
4945 			label1 = path;
4946 			break;
4947 		default:
4948 			return got_error(GOT_ERR_FILE_STATUS);
4949 		}
4950 		fd1 = got_opentempfd();
4951 		if (fd1 == -1) {
4952 			err = got_error_from_errno("got_opentempfd");
4953 			goto done;
4954 		}
4955 		fd2 = got_opentempfd();
4956 		if (fd2 == -1) {
4957 			err = got_error_from_errno("got_opentempfd");
4958 			goto done;
4959 		}
4960 		err = got_diff_objects_as_blobs(NULL, NULL, a->f1, a->f2,
4961 		    fd1, fd2, blob_id, staged_blob_id, label1, label2,
4962 		    a->diff_algo, a->diff_context, a->ignore_whitespace,
4963 		    a->force_text_diff, a->diffstat, a->repo, a->outfile);
4964 		goto done;
4965 	}
4966 
4967 	fd1 = got_opentempfd();
4968 	if (fd1 == -1) {
4969 		err = got_error_from_errno("got_opentempfd");
4970 		goto done;
4971 	}
4972 
4973 	if (staged_status == GOT_STATUS_ADD ||
4974 	    staged_status == GOT_STATUS_MODIFY) {
4975 		char *id_str;
4976 		err = got_object_open_as_blob(&blob1, a->repo, staged_blob_id,
4977 		    8192, fd1);
4978 		if (err)
4979 			goto done;
4980 		err = got_object_id_str(&id_str, staged_blob_id);
4981 		if (err)
4982 			goto done;
4983 		if (asprintf(&label1, "%s (staged)", id_str) == -1) {
4984 			err = got_error_from_errno("asprintf");
4985 			free(id_str);
4986 			goto done;
4987 		}
4988 		free(id_str);
4989 	} else if (status != GOT_STATUS_ADD) {
4990 		err = got_object_open_as_blob(&blob1, a->repo, blob_id, 8192,
4991 		    fd1);
4992 		if (err)
4993 			goto done;
4994 	}
4995 
4996 	if (status != GOT_STATUS_DELETE) {
4997 		if (asprintf(&abspath, "%s/%s",
4998 		    got_worktree_get_root_path(a->worktree), path) == -1) {
4999 			err = got_error_from_errno("asprintf");
5000 			goto done;
5001 		}
5002 
5003 		if (dirfd != -1) {
5004 			fd = openat(dirfd, de_name,
5005 			    O_RDONLY | O_NOFOLLOW | O_CLOEXEC);
5006 			if (fd == -1) {
5007 				if (!got_err_open_nofollow_on_symlink()) {
5008 					err = got_error_from_errno2("openat",
5009 					    abspath);
5010 					goto done;
5011 				}
5012 				err = get_symlink_target_file(&fd, dirfd,
5013 				    de_name, abspath);
5014 				if (err)
5015 					goto done;
5016 			}
5017 		} else {
5018 			fd = open(abspath, O_RDONLY | O_NOFOLLOW | O_CLOEXEC);
5019 			if (fd == -1) {
5020 				if (!got_err_open_nofollow_on_symlink()) {
5021 					err = got_error_from_errno2("open",
5022 					    abspath);
5023 					goto done;
5024 				}
5025 				err = get_symlink_target_file(&fd, dirfd,
5026 				    de_name, abspath);
5027 				if (err)
5028 					goto done;
5029 			}
5030 		}
5031 		if (fstatat(fd, abspath, &sb, AT_SYMLINK_NOFOLLOW) == -1) {
5032 			err = got_error_from_errno2("fstatat", abspath);
5033 			goto done;
5034 		}
5035 		f2 = fdopen(fd, "r");
5036 		if (f2 == NULL) {
5037 			err = got_error_from_errno2("fdopen", abspath);
5038 			goto done;
5039 		}
5040 		fd = -1;
5041 		f2_exists = 1;
5042 	}
5043 
5044 	if (blob1) {
5045 		err = got_object_blob_dump_to_file(&size1, NULL, NULL,
5046 		    a->f1, blob1);
5047 		if (err)
5048 			goto done;
5049 	}
5050 
5051 	err = got_diff_blob_file(blob1, a->f1, size1, label1, f2 ? f2 : a->f2,
5052 	    f2_exists, &sb, path, GOT_DIFF_ALGORITHM_PATIENCE, a->diff_context,
5053 	    a->ignore_whitespace, a->force_text_diff, a->diffstat, a->outfile);
5054 done:
5055 	if (fd1 != -1 && close(fd1) == -1 && err == NULL)
5056 		err = got_error_from_errno("close");
5057 	if (fd2 != -1 && close(fd2) == -1 && err == NULL)
5058 		err = got_error_from_errno("close");
5059 	if (blob1)
5060 		got_object_blob_close(blob1);
5061 	if (fd != -1 && close(fd) == -1 && err == NULL)
5062 		err = got_error_from_errno("close");
5063 	if (f2 && fclose(f2) == EOF && err == NULL)
5064 		err = got_error_from_errno("fclose");
5065 	free(abspath);
5066 	return err;
5067 }
5068 
5069 static const struct got_error *
5070 cmd_diff(int argc, char *argv[])
5071 {
5072 	const struct got_error *error;
5073 	struct got_repository *repo = NULL;
5074 	struct got_worktree *worktree = NULL;
5075 	char *cwd = NULL, *repo_path = NULL;
5076 	const char *commit_args[2] = { NULL, NULL };
5077 	int ncommit_args = 0;
5078 	struct got_object_id *ids[2] = { NULL, NULL };
5079 	char *labels[2] = { NULL, NULL };
5080 	int type1 = GOT_OBJ_TYPE_ANY, type2 = GOT_OBJ_TYPE_ANY;
5081 	int diff_context = 3, diff_staged = 0, ignore_whitespace = 0, ch, i;
5082 	int force_text_diff = 0, force_path = 0, rflag = 0, show_diffstat = 0;
5083 	const char *errstr;
5084 	struct got_reflist_head refs;
5085 	struct got_pathlist_head diffstat_paths, paths;
5086 	FILE *f1 = NULL, *f2 = NULL, *outfile = NULL;
5087 	int fd1 = -1, fd2 = -1;
5088 	int *pack_fds = NULL;
5089 	struct got_diffstat_cb_arg dsa;
5090 
5091 	memset(&dsa, 0, sizeof(dsa));
5092 
5093 	TAILQ_INIT(&refs);
5094 	TAILQ_INIT(&paths);
5095 	TAILQ_INIT(&diffstat_paths);
5096 
5097 #ifndef PROFILE
5098 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
5099 	    NULL) == -1)
5100 		err(1, "pledge");
5101 #endif
5102 
5103 	while ((ch = getopt(argc, argv, "aC:c:dPr:sw")) != -1) {
5104 		switch (ch) {
5105 		case 'a':
5106 			force_text_diff = 1;
5107 			break;
5108 		case 'C':
5109 			diff_context = strtonum(optarg, 0, GOT_DIFF_MAX_CONTEXT,
5110 			    &errstr);
5111 			if (errstr != NULL)
5112 				errx(1, "number of context lines is %s: %s",
5113 				    errstr, optarg);
5114 			break;
5115 		case 'c':
5116 			if (ncommit_args >= 2)
5117 				errx(1, "too many -c options used");
5118 			commit_args[ncommit_args++] = optarg;
5119 			break;
5120 		case 'd':
5121 			show_diffstat = 1;
5122 			break;
5123 		case 'P':
5124 			force_path = 1;
5125 			break;
5126 		case 'r':
5127 			repo_path = realpath(optarg, NULL);
5128 			if (repo_path == NULL)
5129 				return got_error_from_errno2("realpath",
5130 				    optarg);
5131 			got_path_strip_trailing_slashes(repo_path);
5132 			rflag = 1;
5133 			break;
5134 		case 's':
5135 			diff_staged = 1;
5136 			break;
5137 		case 'w':
5138 			ignore_whitespace = 1;
5139 			break;
5140 		default:
5141 			usage_diff();
5142 			/* NOTREACHED */
5143 		}
5144 	}
5145 
5146 	argc -= optind;
5147 	argv += optind;
5148 
5149 	cwd = getcwd(NULL, 0);
5150 	if (cwd == NULL) {
5151 		error = got_error_from_errno("getcwd");
5152 		goto done;
5153 	}
5154 
5155 	error = got_repo_pack_fds_open(&pack_fds);
5156 	if (error != NULL)
5157 		goto done;
5158 
5159 	if (repo_path == NULL) {
5160 		error = got_worktree_open(&worktree, cwd);
5161 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
5162 			goto done;
5163 		else
5164 			error = NULL;
5165 		if (worktree) {
5166 			repo_path =
5167 			    strdup(got_worktree_get_repo_path(worktree));
5168 			if (repo_path == NULL) {
5169 				error = got_error_from_errno("strdup");
5170 				goto done;
5171 			}
5172 		} else {
5173 			repo_path = strdup(cwd);
5174 			if (repo_path == NULL) {
5175 				error = got_error_from_errno("strdup");
5176 				goto done;
5177 			}
5178 		}
5179 	}
5180 
5181 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
5182 	free(repo_path);
5183 	if (error != NULL)
5184 		goto done;
5185 
5186 	if (show_diffstat) {
5187 		dsa.paths = &diffstat_paths;
5188 		dsa.force_text = force_text_diff;
5189 		dsa.ignore_ws = ignore_whitespace;
5190 		dsa.diff_algo = GOT_DIFF_ALGORITHM_PATIENCE;
5191 	}
5192 
5193 	if (rflag || worktree == NULL || ncommit_args > 0) {
5194 		if (force_path) {
5195 			error = got_error_msg(GOT_ERR_NOT_IMPL,
5196 			    "-P option can only be used when diffing "
5197 			    "a work tree");
5198 			goto done;
5199 		}
5200 		if (diff_staged) {
5201 			error = got_error_msg(GOT_ERR_NOT_IMPL,
5202 			    "-s option can only be used when diffing "
5203 			    "a work tree");
5204 			goto done;
5205 		}
5206 	}
5207 
5208 	error = apply_unveil(got_repo_get_path(repo), 1,
5209 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
5210 	if (error)
5211 		goto done;
5212 
5213 	if ((!force_path && argc == 2) || ncommit_args > 0) {
5214 		int obj_type = (ncommit_args > 0 ?
5215 		    GOT_OBJ_TYPE_COMMIT : GOT_OBJ_TYPE_ANY);
5216 		error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name,
5217 		    NULL);
5218 		if (error)
5219 			goto done;
5220 		for (i = 0; i < (ncommit_args > 0 ? ncommit_args : argc); i++) {
5221 			const char *arg;
5222 			if (ncommit_args > 0)
5223 				arg = commit_args[i];
5224 			else
5225 				arg = argv[i];
5226 			error = got_repo_match_object_id(&ids[i], &labels[i],
5227 			    arg, obj_type, &refs, repo);
5228 			if (error) {
5229 				if (error->code != GOT_ERR_NOT_REF &&
5230 				    error->code != GOT_ERR_NO_OBJ)
5231 					goto done;
5232 				if (ncommit_args > 0)
5233 					goto done;
5234 				error = NULL;
5235 				break;
5236 			}
5237 		}
5238 	}
5239 
5240 	f1 = got_opentemp();
5241 	if (f1 == NULL) {
5242 		error = got_error_from_errno("got_opentemp");
5243 		goto done;
5244 	}
5245 
5246 	f2 = got_opentemp();
5247 	if (f2 == NULL) {
5248 		error = got_error_from_errno("got_opentemp");
5249 		goto done;
5250 	}
5251 
5252 	outfile = got_opentemp();
5253 	if (outfile == NULL) {
5254 		error = got_error_from_errno("got_opentemp");
5255 		goto done;
5256 	}
5257 
5258 	if (ncommit_args == 0 && (ids[0] == NULL || ids[1] == NULL)) {
5259 		struct print_diff_arg arg;
5260 		char *id_str;
5261 
5262 		if (worktree == NULL) {
5263 			if (argc == 2 && ids[0] == NULL) {
5264 				error = got_error_path(argv[0], GOT_ERR_NO_OBJ);
5265 				goto done;
5266 			} else if (argc == 2 && ids[1] == NULL) {
5267 				error = got_error_path(argv[1], GOT_ERR_NO_OBJ);
5268 				goto done;
5269 			} else if (argc > 0) {
5270 				error = got_error_fmt(GOT_ERR_NOT_WORKTREE,
5271 				    "%s", "specified paths cannot be resolved");
5272 				goto done;
5273 			} else {
5274 				error = got_error(GOT_ERR_NOT_WORKTREE);
5275 				goto done;
5276 			}
5277 		}
5278 
5279 		error = get_worktree_paths_from_argv(&paths, argc, argv,
5280 		    worktree);
5281 		if (error)
5282 			goto done;
5283 
5284 		error = got_object_id_str(&id_str,
5285 		    got_worktree_get_base_commit_id(worktree));
5286 		if (error)
5287 			goto done;
5288 		arg.repo = repo;
5289 		arg.worktree = worktree;
5290 		arg.diff_algo = GOT_DIFF_ALGORITHM_PATIENCE;
5291 		arg.diff_context = diff_context;
5292 		arg.id_str = id_str;
5293 		arg.header_shown = 0;
5294 		arg.diff_staged = diff_staged;
5295 		arg.ignore_whitespace = ignore_whitespace;
5296 		arg.force_text_diff = force_text_diff;
5297 		arg.diffstat = show_diffstat ? &dsa : NULL;
5298 		arg.f1 = f1;
5299 		arg.f2 = f2;
5300 		arg.outfile = outfile;
5301 
5302 		error = got_worktree_status(worktree, &paths, repo, 0,
5303 		    print_diff, &arg, check_cancelled, NULL);
5304 		free(id_str);
5305 		if (error)
5306 			goto done;
5307 
5308 		if (show_diffstat && dsa.nfiles > 0) {
5309 			char *header;
5310 
5311 			if (asprintf(&header, "diffstat %s%s",
5312 			    diff_staged ? "-s " : "",
5313 			    got_worktree_get_root_path(worktree)) == -1) {
5314 				error = got_error_from_errno("asprintf");
5315 				goto done;
5316 			}
5317 
5318 			error = print_diffstat(&dsa, header);
5319 			free(header);
5320 			if (error)
5321 				goto done;
5322 		}
5323 
5324 		error = printfile(outfile);
5325 		goto done;
5326 	}
5327 
5328 	if (ncommit_args == 1) {
5329 		struct got_commit_object *commit;
5330 		error = got_object_open_as_commit(&commit, repo, ids[0]);
5331 		if (error)
5332 			goto done;
5333 
5334 		labels[1] = labels[0];
5335 		ids[1] = ids[0];
5336 		if (got_object_commit_get_nparents(commit) > 0) {
5337 			const struct got_object_id_queue *pids;
5338 			struct got_object_qid *pid;
5339 			pids = got_object_commit_get_parent_ids(commit);
5340 			pid = STAILQ_FIRST(pids);
5341 			ids[0] = got_object_id_dup(&pid->id);
5342 			if (ids[0] == NULL) {
5343 				error = got_error_from_errno(
5344 				    "got_object_id_dup");
5345 				got_object_commit_close(commit);
5346 				goto done;
5347 			}
5348 			error = got_object_id_str(&labels[0], ids[0]);
5349 			if (error) {
5350 				got_object_commit_close(commit);
5351 				goto done;
5352 			}
5353 		} else {
5354 			ids[0] = NULL;
5355 			labels[0] = strdup("/dev/null");
5356 			if (labels[0] == NULL) {
5357 				error = got_error_from_errno("strdup");
5358 				got_object_commit_close(commit);
5359 				goto done;
5360 			}
5361 		}
5362 
5363 		got_object_commit_close(commit);
5364 	}
5365 
5366 	if (ncommit_args == 0 && argc > 2) {
5367 		error = got_error_msg(GOT_ERR_BAD_PATH,
5368 		    "path arguments cannot be used when diffing two objects");
5369 		goto done;
5370 	}
5371 
5372 	if (ids[0]) {
5373 		error = got_object_get_type(&type1, repo, ids[0]);
5374 		if (error)
5375 			goto done;
5376 	}
5377 
5378 	error = got_object_get_type(&type2, repo, ids[1]);
5379 	if (error)
5380 		goto done;
5381 	if (type1 != GOT_OBJ_TYPE_ANY && type1 != type2) {
5382 		error = got_error(GOT_ERR_OBJ_TYPE);
5383 		goto done;
5384 	}
5385 	if (type1 == GOT_OBJ_TYPE_BLOB && argc > 2) {
5386 		error = got_error_msg(GOT_ERR_OBJ_TYPE,
5387 		    "path arguments cannot be used when diffing blobs");
5388 		goto done;
5389 	}
5390 
5391 	for (i = 0; ncommit_args > 0 && i < argc; i++) {
5392 		char *in_repo_path;
5393 		struct got_pathlist_entry *new;
5394 		if (worktree) {
5395 			const char *prefix;
5396 			char *p;
5397 			error = got_worktree_resolve_path(&p, worktree,
5398 			    argv[i]);
5399 			if (error)
5400 				goto done;
5401 			prefix = got_worktree_get_path_prefix(worktree);
5402 			while (prefix[0] == '/')
5403 				prefix++;
5404 			if (asprintf(&in_repo_path, "%s%s%s", prefix,
5405 			    (p[0] != '\0' && prefix[0] != '\0') ? "/" : "",
5406 			    p) == -1) {
5407 				error = got_error_from_errno("asprintf");
5408 				free(p);
5409 				goto done;
5410 			}
5411 			free(p);
5412 		} else {
5413 			char *mapped_path, *s;
5414 			error = got_repo_map_path(&mapped_path, repo, argv[i]);
5415 			if (error)
5416 				goto done;
5417 			s = mapped_path;
5418 			while (s[0] == '/')
5419 				s++;
5420 			in_repo_path = strdup(s);
5421 			if (in_repo_path == NULL) {
5422 				error = got_error_from_errno("asprintf");
5423 				free(mapped_path);
5424 				goto done;
5425 			}
5426 			free(mapped_path);
5427 
5428 		}
5429 		error = got_pathlist_insert(&new, &paths, in_repo_path, NULL);
5430 		if (error || new == NULL /* duplicate */)
5431 			free(in_repo_path);
5432 		if (error)
5433 			goto done;
5434 	}
5435 
5436 	if (worktree) {
5437 		/* Release work tree lock. */
5438 		got_worktree_close(worktree);
5439 		worktree = NULL;
5440 	}
5441 
5442 	fd1 = got_opentempfd();
5443 	if (fd1 == -1) {
5444 		error = got_error_from_errno("got_opentempfd");
5445 		goto done;
5446 	}
5447 
5448 	fd2 = got_opentempfd();
5449 	if (fd2 == -1) {
5450 		error = got_error_from_errno("got_opentempfd");
5451 		goto done;
5452 	}
5453 
5454 	switch (type1 == GOT_OBJ_TYPE_ANY ? type2 : type1) {
5455 	case GOT_OBJ_TYPE_BLOB:
5456 		error = got_diff_objects_as_blobs(NULL, NULL, f1, f2,
5457 		    fd1, fd2, ids[0], ids[1], NULL, NULL,
5458 		    GOT_DIFF_ALGORITHM_PATIENCE, diff_context,
5459 		    ignore_whitespace, force_text_diff,
5460 		    show_diffstat ? &dsa : NULL, repo, outfile);
5461 		break;
5462 	case GOT_OBJ_TYPE_TREE:
5463 		error = got_diff_objects_as_trees(NULL, NULL, f1, f2, fd1, fd2,
5464 		    ids[0], ids[1], &paths, "", "",
5465 		    GOT_DIFF_ALGORITHM_PATIENCE, diff_context,
5466 		    ignore_whitespace, force_text_diff,
5467 		    show_diffstat ? &dsa : NULL, repo, outfile);
5468 		break;
5469 	case GOT_OBJ_TYPE_COMMIT:
5470 		fprintf(outfile, "diff %s %s\n", labels[0], labels[1]);
5471 		error = got_diff_objects_as_commits(NULL, NULL, f1, f2,
5472 		    fd1, fd2, ids[0], ids[1], &paths,
5473 		    GOT_DIFF_ALGORITHM_PATIENCE, diff_context,
5474 		    ignore_whitespace, force_text_diff,
5475 		    show_diffstat ? &dsa : NULL, repo, outfile);
5476 		break;
5477 	default:
5478 		error = got_error(GOT_ERR_OBJ_TYPE);
5479 	}
5480 	if (error)
5481 		goto done;
5482 
5483 	if (show_diffstat && dsa.nfiles > 0) {
5484 		char *header = NULL;
5485 
5486 		if (asprintf(&header, "diffstat %s %s",
5487 		    labels[0], labels[1]) == -1) {
5488 			error = got_error_from_errno("asprintf");
5489 			goto done;
5490 		}
5491 
5492 		error = print_diffstat(&dsa, header);
5493 		free(header);
5494 		if (error)
5495 			goto done;
5496 	}
5497 
5498 	error = printfile(outfile);
5499 
5500 done:
5501 	free(labels[0]);
5502 	free(labels[1]);
5503 	free(ids[0]);
5504 	free(ids[1]);
5505 	if (worktree)
5506 		got_worktree_close(worktree);
5507 	if (repo) {
5508 		const struct got_error *close_err = got_repo_close(repo);
5509 		if (error == NULL)
5510 			error = close_err;
5511 	}
5512 	if (pack_fds) {
5513 		const struct got_error *pack_err =
5514 		    got_repo_pack_fds_close(pack_fds);
5515 		if (error == NULL)
5516 			error = pack_err;
5517 	}
5518 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_PATH);
5519 	got_pathlist_free(&diffstat_paths, GOT_PATHLIST_FREE_ALL);
5520 	got_ref_list_free(&refs);
5521 	if (outfile && fclose(outfile) == EOF && error == NULL)
5522 		error = got_error_from_errno("fclose");
5523 	if (f1 && fclose(f1) == EOF && error == NULL)
5524 		error = got_error_from_errno("fclose");
5525 	if (f2 && fclose(f2) == EOF && error == NULL)
5526 		error = got_error_from_errno("fclose");
5527 	if (fd1 != -1 && close(fd1) == -1 && error == NULL)
5528 		error = got_error_from_errno("close");
5529 	if (fd2 != -1 && close(fd2) == -1 && error == NULL)
5530 		error = got_error_from_errno("close");
5531 	return error;
5532 }
5533 
5534 __dead static void
5535 usage_blame(void)
5536 {
5537 	fprintf(stderr,
5538 	    "usage: %s blame [-c commit] [-r repository-path] path\n",
5539 	    getprogname());
5540 	exit(1);
5541 }
5542 
5543 struct blame_line {
5544 	int annotated;
5545 	char *id_str;
5546 	char *committer;
5547 	char datebuf[11]; /* YYYY-MM-DD + NUL */
5548 };
5549 
5550 struct blame_cb_args {
5551 	struct blame_line *lines;
5552 	int nlines;
5553 	int nlines_prec;
5554 	int lineno_cur;
5555 	off_t *line_offsets;
5556 	FILE *f;
5557 	struct got_repository *repo;
5558 };
5559 
5560 static const struct got_error *
5561 blame_cb(void *arg, int nlines, int lineno,
5562     struct got_commit_object *commit, struct got_object_id *id)
5563 {
5564 	const struct got_error *err = NULL;
5565 	struct blame_cb_args *a = arg;
5566 	struct blame_line *bline;
5567 	char *line = NULL;
5568 	size_t linesize = 0;
5569 	off_t offset;
5570 	struct tm tm;
5571 	time_t committer_time;
5572 
5573 	if (nlines != a->nlines ||
5574 	    (lineno != -1 && lineno < 1) || lineno > a->nlines)
5575 		return got_error(GOT_ERR_RANGE);
5576 
5577 	if (sigint_received)
5578 		return got_error(GOT_ERR_ITER_COMPLETED);
5579 
5580 	if (lineno == -1)
5581 		return NULL; /* no change in this commit */
5582 
5583 	/* Annotate this line. */
5584 	bline = &a->lines[lineno - 1];
5585 	if (bline->annotated)
5586 		return NULL;
5587 	err = got_object_id_str(&bline->id_str, id);
5588 	if (err)
5589 		return err;
5590 
5591 	bline->committer = strdup(got_object_commit_get_committer(commit));
5592 	if (bline->committer == NULL) {
5593 		err = got_error_from_errno("strdup");
5594 		goto done;
5595 	}
5596 
5597 	committer_time = got_object_commit_get_committer_time(commit);
5598 	if (gmtime_r(&committer_time, &tm) == NULL)
5599 		return got_error_from_errno("gmtime_r");
5600 	if (strftime(bline->datebuf, sizeof(bline->datebuf), "%G-%m-%d",
5601 	    &tm) == 0) {
5602 		err = got_error(GOT_ERR_NO_SPACE);
5603 		goto done;
5604 	}
5605 	bline->annotated = 1;
5606 
5607 	/* Print lines annotated so far. */
5608 	bline = &a->lines[a->lineno_cur - 1];
5609 	if (!bline->annotated)
5610 		goto done;
5611 
5612 	offset = a->line_offsets[a->lineno_cur - 1];
5613 	if (fseeko(a->f, offset, SEEK_SET) == -1) {
5614 		err = got_error_from_errno("fseeko");
5615 		goto done;
5616 	}
5617 
5618 	while (a->lineno_cur <= a->nlines && bline->annotated) {
5619 		char *smallerthan, *at, *nl, *committer;
5620 		size_t len;
5621 
5622 		if (getline(&line, &linesize, a->f) == -1) {
5623 			if (ferror(a->f))
5624 				err = got_error_from_errno("getline");
5625 			break;
5626 		}
5627 
5628 		committer = bline->committer;
5629 		smallerthan = strchr(committer, '<');
5630 		if (smallerthan && smallerthan[1] != '\0')
5631 			committer = smallerthan + 1;
5632 		at = strchr(committer, '@');
5633 		if (at)
5634 			*at = '\0';
5635 		len = strlen(committer);
5636 		if (len >= 9)
5637 			committer[8] = '\0';
5638 
5639 		nl = strchr(line, '\n');
5640 		if (nl)
5641 			*nl = '\0';
5642 		printf("%.*d) %.8s %s %-8s %s\n", a->nlines_prec, a->lineno_cur,
5643 		    bline->id_str, bline->datebuf, committer, line);
5644 
5645 		a->lineno_cur++;
5646 		bline = &a->lines[a->lineno_cur - 1];
5647 	}
5648 done:
5649 	free(line);
5650 	return err;
5651 }
5652 
5653 static const struct got_error *
5654 cmd_blame(int argc, char *argv[])
5655 {
5656 	const struct got_error *error;
5657 	struct got_repository *repo = NULL;
5658 	struct got_worktree *worktree = NULL;
5659 	char *path, *cwd = NULL, *repo_path = NULL, *in_repo_path = NULL;
5660 	char *link_target = NULL;
5661 	struct got_object_id *obj_id = NULL;
5662 	struct got_object_id *commit_id = NULL;
5663 	struct got_commit_object *commit = NULL;
5664 	struct got_blob_object *blob = NULL;
5665 	char *commit_id_str = NULL;
5666 	struct blame_cb_args bca;
5667 	int ch, obj_type, i, fd1 = -1, fd2 = -1, fd3 = -1;
5668 	off_t filesize;
5669 	int *pack_fds = NULL;
5670 	FILE *f1 = NULL, *f2 = NULL;
5671 
5672 	fd1 = got_opentempfd();
5673 	if (fd1 == -1)
5674 		return got_error_from_errno("got_opentempfd");
5675 
5676 	memset(&bca, 0, sizeof(bca));
5677 
5678 #ifndef PROFILE
5679 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
5680 	    NULL) == -1)
5681 		err(1, "pledge");
5682 #endif
5683 
5684 	while ((ch = getopt(argc, argv, "c:r:")) != -1) {
5685 		switch (ch) {
5686 		case 'c':
5687 			commit_id_str = optarg;
5688 			break;
5689 		case 'r':
5690 			repo_path = realpath(optarg, NULL);
5691 			if (repo_path == NULL)
5692 				return got_error_from_errno2("realpath",
5693 				    optarg);
5694 			got_path_strip_trailing_slashes(repo_path);
5695 			break;
5696 		default:
5697 			usage_blame();
5698 			/* NOTREACHED */
5699 		}
5700 	}
5701 
5702 	argc -= optind;
5703 	argv += optind;
5704 
5705 	if (argc == 1)
5706 		path = argv[0];
5707 	else
5708 		usage_blame();
5709 
5710 	cwd = getcwd(NULL, 0);
5711 	if (cwd == NULL) {
5712 		error = got_error_from_errno("getcwd");
5713 		goto done;
5714 	}
5715 
5716 	error = got_repo_pack_fds_open(&pack_fds);
5717 	if (error != NULL)
5718 		goto done;
5719 
5720 	if (repo_path == NULL) {
5721 		error = got_worktree_open(&worktree, cwd);
5722 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
5723 			goto done;
5724 		else
5725 			error = NULL;
5726 		if (worktree) {
5727 			repo_path =
5728 			    strdup(got_worktree_get_repo_path(worktree));
5729 			if (repo_path == NULL) {
5730 				error = got_error_from_errno("strdup");
5731 				if (error)
5732 					goto done;
5733 			}
5734 		} else {
5735 			repo_path = strdup(cwd);
5736 			if (repo_path == NULL) {
5737 				error = got_error_from_errno("strdup");
5738 				goto done;
5739 			}
5740 		}
5741 	}
5742 
5743 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
5744 	if (error != NULL)
5745 		goto done;
5746 
5747 	if (worktree) {
5748 		const char *prefix = got_worktree_get_path_prefix(worktree);
5749 		char *p;
5750 
5751 		error = got_worktree_resolve_path(&p, worktree, path);
5752 		if (error)
5753 			goto done;
5754 		if (asprintf(&in_repo_path, "%s%s%s", prefix,
5755 		    (p[0] != '\0' && !got_path_is_root_dir(prefix)) ? "/" : "",
5756 		    p) == -1) {
5757 			error = got_error_from_errno("asprintf");
5758 			free(p);
5759 			goto done;
5760 		}
5761 		free(p);
5762 		error = apply_unveil(got_repo_get_path(repo), 1, NULL);
5763 	} else {
5764 		error = apply_unveil(got_repo_get_path(repo), 1, NULL);
5765 		if (error)
5766 			goto done;
5767 		error = got_repo_map_path(&in_repo_path, repo, path);
5768 	}
5769 	if (error)
5770 		goto done;
5771 
5772 	if (commit_id_str == NULL) {
5773 		struct got_reference *head_ref;
5774 		error = got_ref_open(&head_ref, repo, worktree ?
5775 		    got_worktree_get_head_ref_name(worktree) : GOT_REF_HEAD, 0);
5776 		if (error != NULL)
5777 			goto done;
5778 		error = got_ref_resolve(&commit_id, repo, head_ref);
5779 		got_ref_close(head_ref);
5780 		if (error != NULL)
5781 			goto done;
5782 	} else {
5783 		struct got_reflist_head refs;
5784 		TAILQ_INIT(&refs);
5785 		error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name,
5786 		    NULL);
5787 		if (error)
5788 			goto done;
5789 		error = got_repo_match_object_id(&commit_id, NULL,
5790 		    commit_id_str, GOT_OBJ_TYPE_COMMIT, &refs, repo);
5791 		got_ref_list_free(&refs);
5792 		if (error)
5793 			goto done;
5794 	}
5795 
5796 	if (worktree) {
5797 		/* Release work tree lock. */
5798 		got_worktree_close(worktree);
5799 		worktree = NULL;
5800 	}
5801 
5802 	error = got_object_open_as_commit(&commit, repo, commit_id);
5803 	if (error)
5804 		goto done;
5805 
5806 	error = got_object_resolve_symlinks(&link_target, in_repo_path,
5807 	    commit, repo);
5808 	if (error)
5809 		goto done;
5810 
5811 	error = got_object_id_by_path(&obj_id, repo, commit,
5812 	    link_target ? link_target : in_repo_path);
5813 	if (error)
5814 		goto done;
5815 
5816 	error = got_object_get_type(&obj_type, repo, obj_id);
5817 	if (error)
5818 		goto done;
5819 
5820 	if (obj_type != GOT_OBJ_TYPE_BLOB) {
5821 		error = got_error_path(link_target ? link_target : in_repo_path,
5822 		    GOT_ERR_OBJ_TYPE);
5823 		goto done;
5824 	}
5825 
5826 	error = got_object_open_as_blob(&blob, repo, obj_id, 8192, fd1);
5827 	if (error)
5828 		goto done;
5829 	bca.f = got_opentemp();
5830 	if (bca.f == NULL) {
5831 		error = got_error_from_errno("got_opentemp");
5832 		goto done;
5833 	}
5834 	error = got_object_blob_dump_to_file(&filesize, &bca.nlines,
5835 	    &bca.line_offsets, bca.f, blob);
5836 	if (error || bca.nlines == 0)
5837 		goto done;
5838 
5839 	/* Don't include \n at EOF in the blame line count. */
5840 	if (bca.line_offsets[bca.nlines - 1] == filesize)
5841 		bca.nlines--;
5842 
5843 	bca.lines = calloc(bca.nlines, sizeof(*bca.lines));
5844 	if (bca.lines == NULL) {
5845 		error = got_error_from_errno("calloc");
5846 		goto done;
5847 	}
5848 	bca.lineno_cur = 1;
5849 	bca.nlines_prec = 0;
5850 	i = bca.nlines;
5851 	while (i > 0) {
5852 		i /= 10;
5853 		bca.nlines_prec++;
5854 	}
5855 	bca.repo = repo;
5856 
5857 	fd2 = got_opentempfd();
5858 	if (fd2 == -1) {
5859 		error = got_error_from_errno("got_opentempfd");
5860 		goto done;
5861 	}
5862 	fd3 = got_opentempfd();
5863 	if (fd3 == -1) {
5864 		error = got_error_from_errno("got_opentempfd");
5865 		goto done;
5866 	}
5867 	f1 = got_opentemp();
5868 	if (f1 == NULL) {
5869 		error = got_error_from_errno("got_opentemp");
5870 		goto done;
5871 	}
5872 	f2 = got_opentemp();
5873 	if (f2 == NULL) {
5874 		error = got_error_from_errno("got_opentemp");
5875 		goto done;
5876 	}
5877 	error = got_blame(link_target ? link_target : in_repo_path, commit_id,
5878 	    repo, GOT_DIFF_ALGORITHM_PATIENCE, blame_cb, &bca,
5879 	    check_cancelled, NULL, fd2, fd3, f1, f2);
5880 done:
5881 	free(in_repo_path);
5882 	free(link_target);
5883 	free(repo_path);
5884 	free(cwd);
5885 	free(commit_id);
5886 	free(obj_id);
5887 	if (commit)
5888 		got_object_commit_close(commit);
5889 
5890 	if (fd1 != -1 && close(fd1) == -1 && error == NULL)
5891 		error = got_error_from_errno("close");
5892 	if (fd2 != -1 && close(fd2) == -1 && error == NULL)
5893 		error = got_error_from_errno("close");
5894 	if (fd3 != -1 && close(fd3) == -1 && error == NULL)
5895 		error = got_error_from_errno("close");
5896 	if (f1 && fclose(f1) == EOF && error == NULL)
5897 		error = got_error_from_errno("fclose");
5898 	if (f2 && fclose(f2) == EOF && error == NULL)
5899 		error = got_error_from_errno("fclose");
5900 
5901 	if (blob)
5902 		got_object_blob_close(blob);
5903 	if (worktree)
5904 		got_worktree_close(worktree);
5905 	if (repo) {
5906 		const struct got_error *close_err = got_repo_close(repo);
5907 		if (error == NULL)
5908 			error = close_err;
5909 	}
5910 	if (pack_fds) {
5911 		const struct got_error *pack_err =
5912 		    got_repo_pack_fds_close(pack_fds);
5913 		if (error == NULL)
5914 			error = pack_err;
5915 	}
5916 	if (bca.lines) {
5917 		for (i = 0; i < bca.nlines; i++) {
5918 			struct blame_line *bline = &bca.lines[i];
5919 			free(bline->id_str);
5920 			free(bline->committer);
5921 		}
5922 		free(bca.lines);
5923 	}
5924 	free(bca.line_offsets);
5925 	if (bca.f && fclose(bca.f) == EOF && error == NULL)
5926 		error = got_error_from_errno("fclose");
5927 	return error;
5928 }
5929 
5930 __dead static void
5931 usage_tree(void)
5932 {
5933 	fprintf(stderr, "usage: %s tree [-iR] [-c commit] [-r repository-path] "
5934 	    "[path]\n", getprogname());
5935 	exit(1);
5936 }
5937 
5938 static const struct got_error *
5939 print_entry(struct got_tree_entry *te, const char *id, const char *path,
5940     const char *root_path, struct got_repository *repo)
5941 {
5942 	const struct got_error *err = NULL;
5943 	int is_root_path = (strcmp(path, root_path) == 0);
5944 	const char *modestr = "";
5945 	mode_t mode = got_tree_entry_get_mode(te);
5946 	char *link_target = NULL;
5947 
5948 	path += strlen(root_path);
5949 	while (path[0] == '/')
5950 		path++;
5951 
5952 	if (got_object_tree_entry_is_submodule(te))
5953 		modestr = "$";
5954 	else if (S_ISLNK(mode)) {
5955 		int i;
5956 
5957 		err = got_tree_entry_get_symlink_target(&link_target, te, repo);
5958 		if (err)
5959 			return err;
5960 		for (i = 0; i < strlen(link_target); i++) {
5961 			if (!isprint((unsigned char)link_target[i]))
5962 				link_target[i] = '?';
5963 		}
5964 
5965 		modestr = "@";
5966 	}
5967 	else if (S_ISDIR(mode))
5968 		modestr = "/";
5969 	else if (mode & S_IXUSR)
5970 		modestr = "*";
5971 
5972 	printf("%s%s%s%s%s%s%s\n", id ? id : "", path,
5973 	    is_root_path ? "" : "/", got_tree_entry_get_name(te), modestr,
5974 	    link_target ? " -> ": "", link_target ? link_target : "");
5975 
5976 	free(link_target);
5977 	return NULL;
5978 }
5979 
5980 static const struct got_error *
5981 print_tree(const char *path, struct got_commit_object *commit,
5982     int show_ids, int recurse, const char *root_path,
5983     struct got_repository *repo)
5984 {
5985 	const struct got_error *err = NULL;
5986 	struct got_object_id *tree_id = NULL;
5987 	struct got_tree_object *tree = NULL;
5988 	int nentries, i;
5989 
5990 	err = got_object_id_by_path(&tree_id, repo, commit, path);
5991 	if (err)
5992 		goto done;
5993 
5994 	err = got_object_open_as_tree(&tree, repo, tree_id);
5995 	if (err)
5996 		goto done;
5997 	nentries = got_object_tree_get_nentries(tree);
5998 	for (i = 0; i < nentries; i++) {
5999 		struct got_tree_entry *te;
6000 		char *id = NULL;
6001 
6002 		if (sigint_received || sigpipe_received)
6003 			break;
6004 
6005 		te = got_object_tree_get_entry(tree, i);
6006 		if (show_ids) {
6007 			char *id_str;
6008 			err = got_object_id_str(&id_str,
6009 			    got_tree_entry_get_id(te));
6010 			if (err)
6011 				goto done;
6012 			if (asprintf(&id, "%s ", id_str) == -1) {
6013 				err = got_error_from_errno("asprintf");
6014 				free(id_str);
6015 				goto done;
6016 			}
6017 			free(id_str);
6018 		}
6019 		err = print_entry(te, id, path, root_path, repo);
6020 		free(id);
6021 		if (err)
6022 			goto done;
6023 
6024 		if (recurse && S_ISDIR(got_tree_entry_get_mode(te))) {
6025 			char *child_path;
6026 			if (asprintf(&child_path, "%s%s%s", path,
6027 			    path[0] == '/' && path[1] == '\0' ? "" : "/",
6028 			    got_tree_entry_get_name(te)) == -1) {
6029 				err = got_error_from_errno("asprintf");
6030 				goto done;
6031 			}
6032 			err = print_tree(child_path, commit, show_ids, 1,
6033 			    root_path, repo);
6034 			free(child_path);
6035 			if (err)
6036 				goto done;
6037 		}
6038 	}
6039 done:
6040 	if (tree)
6041 		got_object_tree_close(tree);
6042 	free(tree_id);
6043 	return err;
6044 }
6045 
6046 static const struct got_error *
6047 cmd_tree(int argc, char *argv[])
6048 {
6049 	const struct got_error *error;
6050 	struct got_repository *repo = NULL;
6051 	struct got_worktree *worktree = NULL;
6052 	const char *path, *refname = NULL;
6053 	char *cwd = NULL, *repo_path = NULL, *in_repo_path = NULL;
6054 	struct got_object_id *commit_id = NULL;
6055 	struct got_commit_object *commit = NULL;
6056 	char *commit_id_str = NULL;
6057 	int show_ids = 0, recurse = 0;
6058 	int ch;
6059 	int *pack_fds = NULL;
6060 
6061 #ifndef PROFILE
6062 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
6063 	    NULL) == -1)
6064 		err(1, "pledge");
6065 #endif
6066 
6067 	while ((ch = getopt(argc, argv, "c:iRr:")) != -1) {
6068 		switch (ch) {
6069 		case 'c':
6070 			commit_id_str = optarg;
6071 			break;
6072 		case 'i':
6073 			show_ids = 1;
6074 			break;
6075 		case 'R':
6076 			recurse = 1;
6077 			break;
6078 		case 'r':
6079 			repo_path = realpath(optarg, NULL);
6080 			if (repo_path == NULL)
6081 				return got_error_from_errno2("realpath",
6082 				    optarg);
6083 			got_path_strip_trailing_slashes(repo_path);
6084 			break;
6085 		default:
6086 			usage_tree();
6087 			/* NOTREACHED */
6088 		}
6089 	}
6090 
6091 	argc -= optind;
6092 	argv += optind;
6093 
6094 	if (argc == 1)
6095 		path = argv[0];
6096 	else if (argc > 1)
6097 		usage_tree();
6098 	else
6099 		path = NULL;
6100 
6101 	cwd = getcwd(NULL, 0);
6102 	if (cwd == NULL) {
6103 		error = got_error_from_errno("getcwd");
6104 		goto done;
6105 	}
6106 
6107 	error = got_repo_pack_fds_open(&pack_fds);
6108 	if (error != NULL)
6109 		goto done;
6110 
6111 	if (repo_path == NULL) {
6112 		error = got_worktree_open(&worktree, cwd);
6113 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
6114 			goto done;
6115 		else
6116 			error = NULL;
6117 		if (worktree) {
6118 			repo_path =
6119 			    strdup(got_worktree_get_repo_path(worktree));
6120 			if (repo_path == NULL)
6121 				error = got_error_from_errno("strdup");
6122 			if (error)
6123 				goto done;
6124 		} else {
6125 			repo_path = strdup(cwd);
6126 			if (repo_path == NULL) {
6127 				error = got_error_from_errno("strdup");
6128 				goto done;
6129 			}
6130 		}
6131 	}
6132 
6133 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
6134 	if (error != NULL)
6135 		goto done;
6136 
6137 	if (worktree) {
6138 		const char *prefix = got_worktree_get_path_prefix(worktree);
6139 		char *p;
6140 
6141 		if (path == NULL)
6142 			path = "";
6143 		error = got_worktree_resolve_path(&p, worktree, path);
6144 		if (error)
6145 			goto done;
6146 		if (asprintf(&in_repo_path, "%s%s%s", prefix,
6147 		    (p[0] != '\0' && !got_path_is_root_dir(prefix)) ?  "/" : "",
6148 		    p) == -1) {
6149 			error = got_error_from_errno("asprintf");
6150 			free(p);
6151 			goto done;
6152 		}
6153 		free(p);
6154 		error = apply_unveil(got_repo_get_path(repo), 1, NULL);
6155 		if (error)
6156 			goto done;
6157 	} else {
6158 		error = apply_unveil(got_repo_get_path(repo), 1, NULL);
6159 		if (error)
6160 			goto done;
6161 		if (path == NULL)
6162 			path = "/";
6163 		error = got_repo_map_path(&in_repo_path, repo, path);
6164 		if (error != NULL)
6165 			goto done;
6166 	}
6167 
6168 	if (commit_id_str == NULL) {
6169 		struct got_reference *head_ref;
6170 		if (worktree)
6171 			refname = got_worktree_get_head_ref_name(worktree);
6172 		else
6173 			refname = GOT_REF_HEAD;
6174 		error = got_ref_open(&head_ref, repo, refname, 0);
6175 		if (error != NULL)
6176 			goto done;
6177 		error = got_ref_resolve(&commit_id, repo, head_ref);
6178 		got_ref_close(head_ref);
6179 		if (error != NULL)
6180 			goto done;
6181 	} else {
6182 		struct got_reflist_head refs;
6183 		TAILQ_INIT(&refs);
6184 		error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name,
6185 		    NULL);
6186 		if (error)
6187 			goto done;
6188 		error = got_repo_match_object_id(&commit_id, NULL,
6189 		    commit_id_str, GOT_OBJ_TYPE_COMMIT, &refs, repo);
6190 		got_ref_list_free(&refs);
6191 		if (error)
6192 			goto done;
6193 	}
6194 
6195 	if (worktree) {
6196 		/* Release work tree lock. */
6197 		got_worktree_close(worktree);
6198 		worktree = NULL;
6199 	}
6200 
6201 	error = got_object_open_as_commit(&commit, repo, commit_id);
6202 	if (error)
6203 		goto done;
6204 
6205 	error = print_tree(in_repo_path, commit, show_ids, recurse,
6206 	    in_repo_path, repo);
6207 done:
6208 	free(in_repo_path);
6209 	free(repo_path);
6210 	free(cwd);
6211 	free(commit_id);
6212 	if (commit)
6213 		got_object_commit_close(commit);
6214 	if (worktree)
6215 		got_worktree_close(worktree);
6216 	if (repo) {
6217 		const struct got_error *close_err = got_repo_close(repo);
6218 		if (error == NULL)
6219 			error = close_err;
6220 	}
6221 	if (pack_fds) {
6222 		const struct got_error *pack_err =
6223 		    got_repo_pack_fds_close(pack_fds);
6224 		if (error == NULL)
6225 			error = pack_err;
6226 	}
6227 	return error;
6228 }
6229 
6230 __dead static void
6231 usage_status(void)
6232 {
6233 	fprintf(stderr, "usage: %s status [-I] [-S status-codes] "
6234 	    "[-s status-codes] [path ...]\n", getprogname());
6235 	exit(1);
6236 }
6237 
6238 struct got_status_arg {
6239 	char *status_codes;
6240 	int suppress;
6241 };
6242 
6243 static const struct got_error *
6244 print_status(void *arg, unsigned char status, unsigned char staged_status,
6245     const char *path, struct got_object_id *blob_id,
6246     struct got_object_id *staged_blob_id, struct got_object_id *commit_id,
6247     int dirfd, const char *de_name)
6248 {
6249 	struct got_status_arg *st = arg;
6250 
6251 	if (status == staged_status && (status == GOT_STATUS_DELETE))
6252 		status = GOT_STATUS_NO_CHANGE;
6253 	if (st != NULL && st->status_codes) {
6254 		size_t ncodes = strlen(st->status_codes);
6255 		int i, j = 0;
6256 
6257 		for (i = 0; i < ncodes ; i++) {
6258 			if (st->suppress) {
6259 				if (status == st->status_codes[i] ||
6260 				    staged_status == st->status_codes[i]) {
6261 					j++;
6262 					continue;
6263 				}
6264 			} else {
6265 				if (status == st->status_codes[i] ||
6266 				    staged_status == st->status_codes[i])
6267 					break;
6268 			}
6269 		}
6270 
6271 		if (st->suppress && j == 0)
6272 			goto print;
6273 
6274 		if (i == ncodes)
6275 			return NULL;
6276 	}
6277 print:
6278 	printf("%c%c %s\n", status, staged_status, path);
6279 	return NULL;
6280 }
6281 
6282 static const struct got_error *
6283 cmd_status(int argc, char *argv[])
6284 {
6285 	const struct got_error *error = NULL;
6286 	struct got_repository *repo = NULL;
6287 	struct got_worktree *worktree = NULL;
6288 	struct got_status_arg st;
6289 	char *cwd = NULL;
6290 	struct got_pathlist_head paths;
6291 	int ch, i, no_ignores = 0;
6292 	int *pack_fds = NULL;
6293 
6294 	TAILQ_INIT(&paths);
6295 
6296 	memset(&st, 0, sizeof(st));
6297 	st.status_codes = NULL;
6298 	st.suppress = 0;
6299 
6300 #ifndef PROFILE
6301 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
6302 	    NULL) == -1)
6303 		err(1, "pledge");
6304 #endif
6305 
6306 	while ((ch = getopt(argc, argv, "IS:s:")) != -1) {
6307 		switch (ch) {
6308 		case 'I':
6309 			no_ignores = 1;
6310 			break;
6311 		case 'S':
6312 			if (st.status_codes != NULL && st.suppress == 0)
6313 				option_conflict('S', 's');
6314 			st.suppress = 1;
6315 			/* fallthrough */
6316 		case 's':
6317 			for (i = 0; i < strlen(optarg); i++) {
6318 				switch (optarg[i]) {
6319 				case GOT_STATUS_MODIFY:
6320 				case GOT_STATUS_ADD:
6321 				case GOT_STATUS_DELETE:
6322 				case GOT_STATUS_CONFLICT:
6323 				case GOT_STATUS_MISSING:
6324 				case GOT_STATUS_OBSTRUCTED:
6325 				case GOT_STATUS_UNVERSIONED:
6326 				case GOT_STATUS_MODE_CHANGE:
6327 				case GOT_STATUS_NONEXISTENT:
6328 					break;
6329 				default:
6330 					errx(1, "invalid status code '%c'",
6331 					    optarg[i]);
6332 				}
6333 			}
6334 			if (ch == 's' && st.suppress)
6335 				option_conflict('s', 'S');
6336 			st.status_codes = optarg;
6337 			break;
6338 		default:
6339 			usage_status();
6340 			/* NOTREACHED */
6341 		}
6342 	}
6343 
6344 	argc -= optind;
6345 	argv += optind;
6346 
6347 	cwd = getcwd(NULL, 0);
6348 	if (cwd == NULL) {
6349 		error = got_error_from_errno("getcwd");
6350 		goto done;
6351 	}
6352 
6353 	error = got_repo_pack_fds_open(&pack_fds);
6354 	if (error != NULL)
6355 		goto done;
6356 
6357 	error = got_worktree_open(&worktree, cwd);
6358 	if (error) {
6359 		if (error->code == GOT_ERR_NOT_WORKTREE)
6360 			error = wrap_not_worktree_error(error, "status", cwd);
6361 		goto done;
6362 	}
6363 
6364 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
6365 	    NULL, pack_fds);
6366 	if (error != NULL)
6367 		goto done;
6368 
6369 	error = apply_unveil(got_repo_get_path(repo), 1,
6370 	    got_worktree_get_root_path(worktree));
6371 	if (error)
6372 		goto done;
6373 
6374 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
6375 	if (error)
6376 		goto done;
6377 
6378 	error = got_worktree_status(worktree, &paths, repo, no_ignores,
6379 	    print_status, &st, check_cancelled, NULL);
6380 done:
6381 	if (pack_fds) {
6382 		const struct got_error *pack_err =
6383 		    got_repo_pack_fds_close(pack_fds);
6384 		if (error == NULL)
6385 			error = pack_err;
6386 	}
6387 
6388 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_PATH);
6389 	free(cwd);
6390 	return error;
6391 }
6392 
6393 __dead static void
6394 usage_ref(void)
6395 {
6396 	fprintf(stderr, "usage: %s ref [-dlt] [-c object] [-r repository-path] "
6397 	    "[-s reference] [name]\n", getprogname());
6398 	exit(1);
6399 }
6400 
6401 static const struct got_error *
6402 list_refs(struct got_repository *repo, const char *refname, int sort_by_time)
6403 {
6404 	static const struct got_error *err = NULL;
6405 	struct got_reflist_head refs;
6406 	struct got_reflist_entry *re;
6407 
6408 	TAILQ_INIT(&refs);
6409 	err = got_ref_list(&refs, repo, refname, sort_by_time ?
6410 	    got_ref_cmp_by_commit_timestamp_descending : got_ref_cmp_by_name,
6411 	    repo);
6412 	if (err)
6413 		return err;
6414 
6415 	TAILQ_FOREACH(re, &refs, entry) {
6416 		char *refstr;
6417 		refstr = got_ref_to_str(re->ref);
6418 		if (refstr == NULL) {
6419 			err = got_error_from_errno("got_ref_to_str");
6420 			break;
6421 		}
6422 		printf("%s: %s\n", got_ref_get_name(re->ref), refstr);
6423 		free(refstr);
6424 	}
6425 
6426 	got_ref_list_free(&refs);
6427 	return err;
6428 }
6429 
6430 static const struct got_error *
6431 delete_ref_by_name(struct got_repository *repo, const char *refname)
6432 {
6433 	const struct got_error *err;
6434 	struct got_reference *ref;
6435 
6436 	err = got_ref_open(&ref, repo, refname, 0);
6437 	if (err)
6438 		return err;
6439 
6440 	err = delete_ref(repo, ref);
6441 	got_ref_close(ref);
6442 	return err;
6443 }
6444 
6445 static const struct got_error *
6446 add_ref(struct got_repository *repo, const char *refname, const char *target)
6447 {
6448 	const struct got_error *err = NULL;
6449 	struct got_object_id *id = NULL;
6450 	struct got_reference *ref = NULL;
6451 	struct got_reflist_head refs;
6452 
6453 	/*
6454 	 * Don't let the user create a reference name with a leading '-'.
6455 	 * While technically a valid reference name, this case is usually
6456 	 * an unintended typo.
6457 	 */
6458 	if (refname[0] == '-')
6459 		return got_error_path(refname, GOT_ERR_REF_NAME_MINUS);
6460 
6461 	TAILQ_INIT(&refs);
6462 	err = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name, NULL);
6463 	if (err)
6464 		goto done;
6465 	err = got_repo_match_object_id(&id, NULL, target, GOT_OBJ_TYPE_ANY,
6466 	    &refs, repo);
6467 	got_ref_list_free(&refs);
6468 	if (err)
6469 		goto done;
6470 
6471 	err = got_ref_alloc(&ref, refname, id);
6472 	if (err)
6473 		goto done;
6474 
6475 	err = got_ref_write(ref, repo);
6476 done:
6477 	if (ref)
6478 		got_ref_close(ref);
6479 	free(id);
6480 	return err;
6481 }
6482 
6483 static const struct got_error *
6484 add_symref(struct got_repository *repo, const char *refname, const char *target)
6485 {
6486 	const struct got_error *err = NULL;
6487 	struct got_reference *ref = NULL;
6488 	struct got_reference *target_ref = NULL;
6489 
6490 	/*
6491 	 * Don't let the user create a reference name with a leading '-'.
6492 	 * While technically a valid reference name, this case is usually
6493 	 * an unintended typo.
6494 	 */
6495 	if (refname[0] == '-')
6496 		return got_error_path(refname, GOT_ERR_REF_NAME_MINUS);
6497 
6498 	err = got_ref_open(&target_ref, repo, target, 0);
6499 	if (err)
6500 		return err;
6501 
6502 	err = got_ref_alloc_symref(&ref, refname, target_ref);
6503 	if (err)
6504 		goto done;
6505 
6506 	err = got_ref_write(ref, repo);
6507 done:
6508 	if (target_ref)
6509 		got_ref_close(target_ref);
6510 	if (ref)
6511 		got_ref_close(ref);
6512 	return err;
6513 }
6514 
6515 static const struct got_error *
6516 cmd_ref(int argc, char *argv[])
6517 {
6518 	const struct got_error *error = NULL;
6519 	struct got_repository *repo = NULL;
6520 	struct got_worktree *worktree = NULL;
6521 	char *cwd = NULL, *repo_path = NULL;
6522 	int ch, do_list = 0, do_delete = 0, sort_by_time = 0;
6523 	const char *obj_arg = NULL, *symref_target= NULL;
6524 	char *refname = NULL;
6525 	int *pack_fds = NULL;
6526 
6527 #ifndef PROFILE
6528 	if (pledge("stdio rpath wpath cpath fattr flock proc exec "
6529 	    "sendfd unveil", NULL) == -1)
6530 		err(1, "pledge");
6531 #endif
6532 
6533 	while ((ch = getopt(argc, argv, "c:dlr:s:t")) != -1) {
6534 		switch (ch) {
6535 		case 'c':
6536 			obj_arg = optarg;
6537 			break;
6538 		case 'd':
6539 			do_delete = 1;
6540 			break;
6541 		case 'l':
6542 			do_list = 1;
6543 			break;
6544 		case 'r':
6545 			repo_path = realpath(optarg, NULL);
6546 			if (repo_path == NULL)
6547 				return got_error_from_errno2("realpath",
6548 				    optarg);
6549 			got_path_strip_trailing_slashes(repo_path);
6550 			break;
6551 		case 's':
6552 			symref_target = optarg;
6553 			break;
6554 		case 't':
6555 			sort_by_time = 1;
6556 			break;
6557 		default:
6558 			usage_ref();
6559 			/* NOTREACHED */
6560 		}
6561 	}
6562 
6563 	if (obj_arg && do_list)
6564 		option_conflict('c', 'l');
6565 	if (obj_arg && do_delete)
6566 		option_conflict('c', 'd');
6567 	if (obj_arg && symref_target)
6568 		option_conflict('c', 's');
6569 	if (symref_target && do_delete)
6570 		option_conflict('s', 'd');
6571 	if (symref_target && do_list)
6572 		option_conflict('s', 'l');
6573 	if (do_delete && do_list)
6574 		option_conflict('d', 'l');
6575 	if (sort_by_time && !do_list)
6576 		errx(1, "-t option requires -l option");
6577 
6578 	argc -= optind;
6579 	argv += optind;
6580 
6581 	if (do_list) {
6582 		if (argc != 0 && argc != 1)
6583 			usage_ref();
6584 		if (argc == 1) {
6585 			refname = strdup(argv[0]);
6586 			if (refname == NULL) {
6587 				error = got_error_from_errno("strdup");
6588 				goto done;
6589 			}
6590 		}
6591 	} else {
6592 		if (argc != 1)
6593 			usage_ref();
6594 		refname = strdup(argv[0]);
6595 		if (refname == NULL) {
6596 			error = got_error_from_errno("strdup");
6597 			goto done;
6598 		}
6599 	}
6600 
6601 	if (refname)
6602 		got_path_strip_trailing_slashes(refname);
6603 
6604 	cwd = getcwd(NULL, 0);
6605 	if (cwd == NULL) {
6606 		error = got_error_from_errno("getcwd");
6607 		goto done;
6608 	}
6609 
6610 	error = got_repo_pack_fds_open(&pack_fds);
6611 	if (error != NULL)
6612 		goto done;
6613 
6614 	if (repo_path == NULL) {
6615 		error = got_worktree_open(&worktree, cwd);
6616 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
6617 			goto done;
6618 		else
6619 			error = NULL;
6620 		if (worktree) {
6621 			repo_path =
6622 			    strdup(got_worktree_get_repo_path(worktree));
6623 			if (repo_path == NULL)
6624 				error = got_error_from_errno("strdup");
6625 			if (error)
6626 				goto done;
6627 		} else {
6628 			repo_path = strdup(cwd);
6629 			if (repo_path == NULL) {
6630 				error = got_error_from_errno("strdup");
6631 				goto done;
6632 			}
6633 		}
6634 	}
6635 
6636 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
6637 	if (error != NULL)
6638 		goto done;
6639 
6640 #ifndef PROFILE
6641 	if (do_list) {
6642 		/* Remove "cpath" promise. */
6643 		if (pledge("stdio rpath wpath flock proc exec sendfd unveil",
6644 		    NULL) == -1)
6645 			err(1, "pledge");
6646 	}
6647 #endif
6648 
6649 	error = apply_unveil(got_repo_get_path(repo), do_list,
6650 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
6651 	if (error)
6652 		goto done;
6653 
6654 	if (do_list)
6655 		error = list_refs(repo, refname, sort_by_time);
6656 	else if (do_delete)
6657 		error = delete_ref_by_name(repo, refname);
6658 	else if (symref_target)
6659 		error = add_symref(repo, refname, symref_target);
6660 	else {
6661 		if (obj_arg == NULL)
6662 			usage_ref();
6663 		error = add_ref(repo, refname, obj_arg);
6664 	}
6665 done:
6666 	free(refname);
6667 	if (repo) {
6668 		const struct got_error *close_err = got_repo_close(repo);
6669 		if (error == NULL)
6670 			error = close_err;
6671 	}
6672 	if (worktree)
6673 		got_worktree_close(worktree);
6674 	if (pack_fds) {
6675 		const struct got_error *pack_err =
6676 		    got_repo_pack_fds_close(pack_fds);
6677 		if (error == NULL)
6678 			error = pack_err;
6679 	}
6680 	free(cwd);
6681 	free(repo_path);
6682 	return error;
6683 }
6684 
6685 __dead static void
6686 usage_branch(void)
6687 {
6688 	fprintf(stderr, "usage: %s branch [-lnt] [-c commit] [-d name] "
6689 	    "[-r repository-path] [name]\n", getprogname());
6690 	exit(1);
6691 }
6692 
6693 static const struct got_error *
6694 list_branch(struct got_repository *repo, struct got_worktree *worktree,
6695     struct got_reference *ref)
6696 {
6697 	const struct got_error *err = NULL;
6698 	const char *refname, *marker = "  ";
6699 	char *refstr;
6700 
6701 	refname = got_ref_get_name(ref);
6702 	if (worktree && strcmp(refname,
6703 	    got_worktree_get_head_ref_name(worktree)) == 0) {
6704 		struct got_object_id *id = NULL;
6705 
6706 		err = got_ref_resolve(&id, repo, ref);
6707 		if (err)
6708 			return err;
6709 		if (got_object_id_cmp(id,
6710 		    got_worktree_get_base_commit_id(worktree)) == 0)
6711 			marker = "* ";
6712 		else
6713 			marker = "~ ";
6714 		free(id);
6715 	}
6716 
6717 	if (strncmp(refname, "refs/heads/", 11) == 0)
6718 		refname += 11;
6719 	if (strncmp(refname, "refs/got/worktree/", 18) == 0)
6720 		refname += 18;
6721 	if (strncmp(refname, "refs/remotes/", 13) == 0)
6722 		refname += 13;
6723 
6724 	refstr = got_ref_to_str(ref);
6725 	if (refstr == NULL)
6726 		return got_error_from_errno("got_ref_to_str");
6727 
6728 	printf("%s%s: %s\n", marker, refname, refstr);
6729 	free(refstr);
6730 	return NULL;
6731 }
6732 
6733 static const struct got_error *
6734 show_current_branch(struct got_repository *repo, struct got_worktree *worktree)
6735 {
6736 	const char *refname;
6737 
6738 	if (worktree == NULL)
6739 		return got_error(GOT_ERR_NOT_WORKTREE);
6740 
6741 	refname = got_worktree_get_head_ref_name(worktree);
6742 
6743 	if (strncmp(refname, "refs/heads/", 11) == 0)
6744 		refname += 11;
6745 	if (strncmp(refname, "refs/got/worktree/", 18) == 0)
6746 		refname += 18;
6747 
6748 	printf("%s\n", refname);
6749 
6750 	return NULL;
6751 }
6752 
6753 static const struct got_error *
6754 list_branches(struct got_repository *repo, struct got_worktree *worktree,
6755     int sort_by_time)
6756 {
6757 	static const struct got_error *err = NULL;
6758 	struct got_reflist_head refs;
6759 	struct got_reflist_entry *re;
6760 	struct got_reference *temp_ref = NULL;
6761 	int rebase_in_progress, histedit_in_progress;
6762 
6763 	TAILQ_INIT(&refs);
6764 
6765 	if (worktree) {
6766 		err = got_worktree_rebase_in_progress(&rebase_in_progress,
6767 		    worktree);
6768 		if (err)
6769 			return err;
6770 
6771 		err = got_worktree_histedit_in_progress(&histedit_in_progress,
6772 		    worktree);
6773 		if (err)
6774 			return err;
6775 
6776 		if (rebase_in_progress || histedit_in_progress) {
6777 			err = got_ref_open(&temp_ref, repo,
6778 			    got_worktree_get_head_ref_name(worktree), 0);
6779 			if (err)
6780 				return err;
6781 			list_branch(repo, worktree, temp_ref);
6782 			got_ref_close(temp_ref);
6783 		}
6784 	}
6785 
6786 	err = got_ref_list(&refs, repo, "refs/heads", sort_by_time ?
6787 	    got_ref_cmp_by_commit_timestamp_descending : got_ref_cmp_by_name,
6788 	    repo);
6789 	if (err)
6790 		return err;
6791 
6792 	TAILQ_FOREACH(re, &refs, entry)
6793 		list_branch(repo, worktree, re->ref);
6794 
6795 	got_ref_list_free(&refs);
6796 
6797 	err = got_ref_list(&refs, repo, "refs/remotes", sort_by_time ?
6798 	    got_ref_cmp_by_commit_timestamp_descending : got_ref_cmp_by_name,
6799 	    repo);
6800 	if (err)
6801 		return err;
6802 
6803 	TAILQ_FOREACH(re, &refs, entry)
6804 		list_branch(repo, worktree, re->ref);
6805 
6806 	got_ref_list_free(&refs);
6807 
6808 	return NULL;
6809 }
6810 
6811 static const struct got_error *
6812 delete_branch(struct got_repository *repo, struct got_worktree *worktree,
6813     const char *branch_name)
6814 {
6815 	const struct got_error *err = NULL;
6816 	struct got_reference *ref = NULL;
6817 	char *refname, *remote_refname = NULL;
6818 
6819 	if (strncmp(branch_name, "refs/", 5) == 0)
6820 		branch_name += 5;
6821 	if (strncmp(branch_name, "heads/", 6) == 0)
6822 		branch_name += 6;
6823 	else if (strncmp(branch_name, "remotes/", 8) == 0)
6824 		branch_name += 8;
6825 
6826 	if (asprintf(&refname, "refs/heads/%s", branch_name) == -1)
6827 		return got_error_from_errno("asprintf");
6828 
6829 	if (asprintf(&remote_refname, "refs/remotes/%s",
6830 	    branch_name) == -1) {
6831 		err = got_error_from_errno("asprintf");
6832 		goto done;
6833 	}
6834 
6835 	err = got_ref_open(&ref, repo, refname, 0);
6836 	if (err) {
6837 		const struct got_error *err2;
6838 		if (err->code != GOT_ERR_NOT_REF)
6839 			goto done;
6840 		/*
6841 		 * Keep 'err' intact such that if neither branch exists
6842 		 * we report "refs/heads" rather than "refs/remotes" in
6843 		 * our error message.
6844 		 */
6845 		err2 = got_ref_open(&ref, repo, remote_refname, 0);
6846 		if (err2)
6847 			goto done;
6848 		err = NULL;
6849 	}
6850 
6851 	if (worktree &&
6852 	    strcmp(got_worktree_get_head_ref_name(worktree),
6853 	    got_ref_get_name(ref)) == 0) {
6854 		err = got_error_msg(GOT_ERR_SAME_BRANCH,
6855 		    "will not delete this work tree's current branch");
6856 		goto done;
6857 	}
6858 
6859 	err = delete_ref(repo, ref);
6860 done:
6861 	if (ref)
6862 		got_ref_close(ref);
6863 	free(refname);
6864 	free(remote_refname);
6865 	return err;
6866 }
6867 
6868 static const struct got_error *
6869 add_branch(struct got_repository *repo, const char *branch_name,
6870     struct got_object_id *base_commit_id)
6871 {
6872 	const struct got_error *err = NULL;
6873 	struct got_reference *ref = NULL;
6874 	char *refname = NULL;
6875 
6876 	/*
6877 	 * Don't let the user create a branch name with a leading '-'.
6878 	 * While technically a valid reference name, this case is usually
6879 	 * an unintended typo.
6880 	 */
6881 	if (branch_name[0] == '-')
6882 		return got_error_path(branch_name, GOT_ERR_REF_NAME_MINUS);
6883 
6884 	if (strncmp(branch_name, "refs/heads/", 11) == 0)
6885 		branch_name += 11;
6886 
6887 	if (asprintf(&refname, "refs/heads/%s", branch_name) == -1) {
6888 		err = got_error_from_errno("asprintf");
6889 		goto done;
6890 	}
6891 
6892 	err = got_ref_open(&ref, repo, refname, 0);
6893 	if (err == NULL) {
6894 		err = got_error(GOT_ERR_BRANCH_EXISTS);
6895 		goto done;
6896 	} else if (err->code != GOT_ERR_NOT_REF)
6897 		goto done;
6898 
6899 	err = got_ref_alloc(&ref, refname, base_commit_id);
6900 	if (err)
6901 		goto done;
6902 
6903 	err = got_ref_write(ref, repo);
6904 done:
6905 	if (ref)
6906 		got_ref_close(ref);
6907 	free(refname);
6908 	return err;
6909 }
6910 
6911 static const struct got_error *
6912 cmd_branch(int argc, char *argv[])
6913 {
6914 	const struct got_error *error = NULL;
6915 	struct got_repository *repo = NULL;
6916 	struct got_worktree *worktree = NULL;
6917 	char *cwd = NULL, *repo_path = NULL;
6918 	int ch, do_list = 0, do_show = 0, do_update = 1, sort_by_time = 0;
6919 	const char *delref = NULL, *commit_id_arg = NULL;
6920 	struct got_reference *ref = NULL;
6921 	struct got_pathlist_head paths;
6922 	struct got_object_id *commit_id = NULL;
6923 	char *commit_id_str = NULL;
6924 	int *pack_fds = NULL;
6925 
6926 	TAILQ_INIT(&paths);
6927 
6928 #ifndef PROFILE
6929 	if (pledge("stdio rpath wpath cpath fattr flock proc exec "
6930 	    "sendfd unveil", NULL) == -1)
6931 		err(1, "pledge");
6932 #endif
6933 
6934 	while ((ch = getopt(argc, argv, "c:d:lnr:t")) != -1) {
6935 		switch (ch) {
6936 		case 'c':
6937 			commit_id_arg = optarg;
6938 			break;
6939 		case 'd':
6940 			delref = optarg;
6941 			break;
6942 		case 'l':
6943 			do_list = 1;
6944 			break;
6945 		case 'n':
6946 			do_update = 0;
6947 			break;
6948 		case 'r':
6949 			repo_path = realpath(optarg, NULL);
6950 			if (repo_path == NULL)
6951 				return got_error_from_errno2("realpath",
6952 				    optarg);
6953 			got_path_strip_trailing_slashes(repo_path);
6954 			break;
6955 		case 't':
6956 			sort_by_time = 1;
6957 			break;
6958 		default:
6959 			usage_branch();
6960 			/* NOTREACHED */
6961 		}
6962 	}
6963 
6964 	if (do_list && delref)
6965 		option_conflict('l', 'd');
6966 	if (sort_by_time && !do_list)
6967 		errx(1, "-t option requires -l option");
6968 
6969 	argc -= optind;
6970 	argv += optind;
6971 
6972 	if (!do_list && !delref && argc == 0)
6973 		do_show = 1;
6974 
6975 	if ((do_list || delref || do_show) && commit_id_arg != NULL)
6976 		errx(1, "-c option can only be used when creating a branch");
6977 
6978 	if (do_list || delref) {
6979 		if (argc > 0)
6980 			usage_branch();
6981 	} else if (!do_show && argc != 1)
6982 		usage_branch();
6983 
6984 	cwd = getcwd(NULL, 0);
6985 	if (cwd == NULL) {
6986 		error = got_error_from_errno("getcwd");
6987 		goto done;
6988 	}
6989 
6990 	error = got_repo_pack_fds_open(&pack_fds);
6991 	if (error != NULL)
6992 		goto done;
6993 
6994 	if (repo_path == NULL) {
6995 		error = got_worktree_open(&worktree, cwd);
6996 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
6997 			goto done;
6998 		else
6999 			error = NULL;
7000 		if (worktree) {
7001 			repo_path =
7002 			    strdup(got_worktree_get_repo_path(worktree));
7003 			if (repo_path == NULL)
7004 				error = got_error_from_errno("strdup");
7005 			if (error)
7006 				goto done;
7007 		} else {
7008 			repo_path = strdup(cwd);
7009 			if (repo_path == NULL) {
7010 				error = got_error_from_errno("strdup");
7011 				goto done;
7012 			}
7013 		}
7014 	}
7015 
7016 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
7017 	if (error != NULL)
7018 		goto done;
7019 
7020 #ifndef PROFILE
7021 	if (do_list || do_show) {
7022 		/* Remove "cpath" promise. */
7023 		if (pledge("stdio rpath wpath flock proc exec sendfd unveil",
7024 		    NULL) == -1)
7025 			err(1, "pledge");
7026 	}
7027 #endif
7028 
7029 	error = apply_unveil(got_repo_get_path(repo), do_list,
7030 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
7031 	if (error)
7032 		goto done;
7033 
7034 	if (do_show)
7035 		error = show_current_branch(repo, worktree);
7036 	else if (do_list)
7037 		error = list_branches(repo, worktree, sort_by_time);
7038 	else if (delref)
7039 		error = delete_branch(repo, worktree, delref);
7040 	else {
7041 		struct got_reflist_head refs;
7042 		TAILQ_INIT(&refs);
7043 		error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name,
7044 		    NULL);
7045 		if (error)
7046 			goto done;
7047 		if (commit_id_arg == NULL)
7048 			commit_id_arg = worktree ?
7049 			    got_worktree_get_head_ref_name(worktree) :
7050 			    GOT_REF_HEAD;
7051 		error = got_repo_match_object_id(&commit_id, NULL,
7052 		    commit_id_arg, GOT_OBJ_TYPE_COMMIT, &refs, repo);
7053 		got_ref_list_free(&refs);
7054 		if (error)
7055 			goto done;
7056 		error = add_branch(repo, argv[0], commit_id);
7057 		if (error)
7058 			goto done;
7059 		if (worktree && do_update) {
7060 			struct got_update_progress_arg upa;
7061 			char *branch_refname = NULL;
7062 
7063 			error = got_object_id_str(&commit_id_str, commit_id);
7064 			if (error)
7065 				goto done;
7066 			error = get_worktree_paths_from_argv(&paths, 0, NULL,
7067 			    worktree);
7068 			if (error)
7069 				goto done;
7070 			if (asprintf(&branch_refname, "refs/heads/%s", argv[0])
7071 			    == -1) {
7072 				error = got_error_from_errno("asprintf");
7073 				goto done;
7074 			}
7075 			error = got_ref_open(&ref, repo, branch_refname, 0);
7076 			free(branch_refname);
7077 			if (error)
7078 				goto done;
7079 			error = switch_head_ref(ref, commit_id, worktree,
7080 			    repo);
7081 			if (error)
7082 				goto done;
7083 			error = got_worktree_set_base_commit_id(worktree, repo,
7084 			    commit_id);
7085 			if (error)
7086 				goto done;
7087 			memset(&upa, 0, sizeof(upa));
7088 			error = got_worktree_checkout_files(worktree, &paths,
7089 			    repo, update_progress, &upa, check_cancelled,
7090 			    NULL);
7091 			if (error)
7092 				goto done;
7093 			if (upa.did_something) {
7094 				printf("Updated to %s: %s\n",
7095 				    got_worktree_get_head_ref_name(worktree),
7096 				    commit_id_str);
7097 			}
7098 			print_update_progress_stats(&upa);
7099 		}
7100 	}
7101 done:
7102 	if (ref)
7103 		got_ref_close(ref);
7104 	if (repo) {
7105 		const struct got_error *close_err = got_repo_close(repo);
7106 		if (error == NULL)
7107 			error = close_err;
7108 	}
7109 	if (worktree)
7110 		got_worktree_close(worktree);
7111 	if (pack_fds) {
7112 		const struct got_error *pack_err =
7113 		    got_repo_pack_fds_close(pack_fds);
7114 		if (error == NULL)
7115 			error = pack_err;
7116 	}
7117 	free(cwd);
7118 	free(repo_path);
7119 	free(commit_id);
7120 	free(commit_id_str);
7121 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_PATH);
7122 	return error;
7123 }
7124 
7125 
7126 __dead static void
7127 usage_tag(void)
7128 {
7129 	fprintf(stderr, "usage: %s tag [-lVv] [-c commit] [-m message] "
7130 	    "[-r repository-path] [-s signer-id] name\n", getprogname());
7131 	exit(1);
7132 }
7133 
7134 #if 0
7135 static const struct got_error *
7136 sort_tags(struct got_reflist_head *sorted, struct got_reflist_head *tags)
7137 {
7138 	const struct got_error *err = NULL;
7139 	struct got_reflist_entry *re, *se, *new;
7140 	struct got_object_id *re_id, *se_id;
7141 	struct got_tag_object *re_tag, *se_tag;
7142 	time_t re_time, se_time;
7143 
7144 	STAILQ_FOREACH(re, tags, entry) {
7145 		se = STAILQ_FIRST(sorted);
7146 		if (se == NULL) {
7147 			err = got_reflist_entry_dup(&new, re);
7148 			if (err)
7149 				return err;
7150 			STAILQ_INSERT_HEAD(sorted, new, entry);
7151 			continue;
7152 		} else {
7153 			err = got_ref_resolve(&re_id, repo, re->ref);
7154 			if (err)
7155 				break;
7156 			err = got_object_open_as_tag(&re_tag, repo, re_id);
7157 			free(re_id);
7158 			if (err)
7159 				break;
7160 			re_time = got_object_tag_get_tagger_time(re_tag);
7161 			got_object_tag_close(re_tag);
7162 		}
7163 
7164 		while (se) {
7165 			err = got_ref_resolve(&se_id, repo, re->ref);
7166 			if (err)
7167 				break;
7168 			err = got_object_open_as_tag(&se_tag, repo, se_id);
7169 			free(se_id);
7170 			if (err)
7171 				break;
7172 			se_time = got_object_tag_get_tagger_time(se_tag);
7173 			got_object_tag_close(se_tag);
7174 
7175 			if (se_time > re_time) {
7176 				err = got_reflist_entry_dup(&new, re);
7177 				if (err)
7178 					return err;
7179 				STAILQ_INSERT_AFTER(sorted, se, new, entry);
7180 				break;
7181 			}
7182 			se = STAILQ_NEXT(se, entry);
7183 			continue;
7184 		}
7185 	}
7186 done:
7187 	return err;
7188 }
7189 #endif
7190 
7191 static const struct got_error *
7192 get_tag_refname(char **refname, const char *tag_name)
7193 {
7194 	const struct got_error *err;
7195 
7196 	if (strncmp("refs/tags/", tag_name, 10) == 0) {
7197 		*refname = strdup(tag_name);
7198 		if (*refname == NULL)
7199 			return got_error_from_errno("strdup");
7200 	} else if (asprintf(refname, "refs/tags/%s", tag_name) == -1) {
7201 		err = got_error_from_errno("asprintf");
7202 		*refname = NULL;
7203 		return err;
7204 	}
7205 
7206 	return NULL;
7207 }
7208 
7209 static const struct got_error *
7210 list_tags(struct got_repository *repo, const char *tag_name, int verify_tags,
7211     const char *allowed_signers, const char *revoked_signers, int verbosity)
7212 {
7213 	static const struct got_error *err = NULL;
7214 	struct got_reflist_head refs;
7215 	struct got_reflist_entry *re;
7216 	char *wanted_refname = NULL;
7217 	int bad_sigs = 0;
7218 
7219 	TAILQ_INIT(&refs);
7220 
7221 	err = got_ref_list(&refs, repo, "refs/tags", got_ref_cmp_tags, repo);
7222 	if (err)
7223 		return err;
7224 
7225 	if (tag_name) {
7226 		struct got_reference *ref;
7227 		err = get_tag_refname(&wanted_refname, tag_name);
7228 		if (err)
7229 			goto done;
7230 		/* Wanted tag reference should exist. */
7231 		err = got_ref_open(&ref, repo, wanted_refname, 0);
7232 		if (err)
7233 			goto done;
7234 		got_ref_close(ref);
7235 	}
7236 
7237 	TAILQ_FOREACH(re, &refs, entry) {
7238 		const char *refname;
7239 		char *refstr, *tagmsg0, *tagmsg, *line, *id_str, *datestr;
7240 		char datebuf[26];
7241 		const char *tagger, *ssh_sig = NULL;
7242 		char *sig_msg = NULL;
7243 		time_t tagger_time;
7244 		struct got_object_id *id;
7245 		struct got_tag_object *tag;
7246 		struct got_commit_object *commit = NULL;
7247 
7248 		refname = got_ref_get_name(re->ref);
7249 		if (strncmp(refname, "refs/tags/", 10) != 0 ||
7250 		    (wanted_refname && strcmp(refname, wanted_refname) != 0))
7251 			continue;
7252 		refname += 10;
7253 		refstr = got_ref_to_str(re->ref);
7254 		if (refstr == NULL) {
7255 			err = got_error_from_errno("got_ref_to_str");
7256 			break;
7257 		}
7258 
7259 		err = got_ref_resolve(&id, repo, re->ref);
7260 		if (err)
7261 			break;
7262 		err = got_object_open_as_tag(&tag, repo, id);
7263 		if (err) {
7264 			if (err->code != GOT_ERR_OBJ_TYPE) {
7265 				free(id);
7266 				break;
7267 			}
7268 			/* "lightweight" tag */
7269 			err = got_object_open_as_commit(&commit, repo, id);
7270 			if (err) {
7271 				free(id);
7272 				break;
7273 			}
7274 			tagger = got_object_commit_get_committer(commit);
7275 			tagger_time =
7276 			    got_object_commit_get_committer_time(commit);
7277 			err = got_object_id_str(&id_str, id);
7278 			free(id);
7279 			if (err)
7280 				break;
7281 		} else {
7282 			free(id);
7283 			tagger = got_object_tag_get_tagger(tag);
7284 			tagger_time = got_object_tag_get_tagger_time(tag);
7285 			err = got_object_id_str(&id_str,
7286 			    got_object_tag_get_object_id(tag));
7287 			if (err)
7288 				break;
7289 		}
7290 
7291 		if (tag && verify_tags) {
7292 			ssh_sig = got_sigs_get_tagmsg_ssh_signature(
7293 			    got_object_tag_get_message(tag));
7294 			if (ssh_sig && allowed_signers == NULL) {
7295 				err = got_error_msg(
7296 				    GOT_ERR_VERIFY_TAG_SIGNATURE,
7297 				    "SSH signature verification requires "
7298 				        "setting allowed_signers in "
7299 				        "got.conf(5)");
7300 				break;
7301 			}
7302 		}
7303 
7304 		printf("%stag %s %s\n", GOT_COMMIT_SEP_STR, refname, refstr);
7305 		free(refstr);
7306 		printf("from: %s\n", tagger);
7307 		datestr = get_datestr(&tagger_time, datebuf);
7308 		if (datestr)
7309 			printf("date: %s UTC\n", datestr);
7310 		if (commit)
7311 			printf("object: %s %s\n", GOT_OBJ_LABEL_COMMIT, id_str);
7312 		else {
7313 			switch (got_object_tag_get_object_type(tag)) {
7314 			case GOT_OBJ_TYPE_BLOB:
7315 				printf("object: %s %s\n", GOT_OBJ_LABEL_BLOB,
7316 				    id_str);
7317 				break;
7318 			case GOT_OBJ_TYPE_TREE:
7319 				printf("object: %s %s\n", GOT_OBJ_LABEL_TREE,
7320 				    id_str);
7321 				break;
7322 			case GOT_OBJ_TYPE_COMMIT:
7323 				printf("object: %s %s\n", GOT_OBJ_LABEL_COMMIT,
7324 				    id_str);
7325 				break;
7326 			case GOT_OBJ_TYPE_TAG:
7327 				printf("object: %s %s\n", GOT_OBJ_LABEL_TAG,
7328 				    id_str);
7329 				break;
7330 			default:
7331 				break;
7332 			}
7333 		}
7334 		free(id_str);
7335 
7336 		if (ssh_sig) {
7337 			err = got_sigs_verify_tag_ssh(&sig_msg, tag, ssh_sig,
7338 				allowed_signers, revoked_signers, verbosity);
7339 			if (err && err->code == GOT_ERR_BAD_TAG_SIGNATURE)
7340 				bad_sigs = 1;
7341 			else if (err)
7342 				break;
7343 			printf("signature: %s", sig_msg);
7344 			free(sig_msg);
7345 			sig_msg = NULL;
7346 		}
7347 
7348 		if (commit) {
7349 			err = got_object_commit_get_logmsg(&tagmsg0, commit);
7350 			if (err)
7351 				break;
7352 			got_object_commit_close(commit);
7353 		} else {
7354 			tagmsg0 = strdup(got_object_tag_get_message(tag));
7355 			got_object_tag_close(tag);
7356 			if (tagmsg0 == NULL) {
7357 				err = got_error_from_errno("strdup");
7358 				break;
7359 			}
7360 		}
7361 
7362 		tagmsg = tagmsg0;
7363 		do {
7364 			line = strsep(&tagmsg, "\n");
7365 			if (line)
7366 				printf(" %s\n", line);
7367 		} while (line);
7368 		free(tagmsg0);
7369 	}
7370 done:
7371 	got_ref_list_free(&refs);
7372 	free(wanted_refname);
7373 
7374 	if (err == NULL && bad_sigs)
7375 		err = got_error(GOT_ERR_BAD_TAG_SIGNATURE);
7376 	return err;
7377 }
7378 
7379 static const struct got_error *
7380 get_tag_message(char **tagmsg, char **tagmsg_path, const char *commit_id_str,
7381     const char *tag_name, const char *repo_path)
7382 {
7383 	const struct got_error *err = NULL;
7384 	char *template = NULL, *initial_content = NULL;
7385 	char *editor = NULL;
7386 	int initial_content_len;
7387 	int fd = -1;
7388 
7389 	if (asprintf(&template, GOT_TMPDIR_STR "/got-tagmsg") == -1) {
7390 		err = got_error_from_errno("asprintf");
7391 		goto done;
7392 	}
7393 
7394 	initial_content_len = asprintf(&initial_content,
7395 	    "\n# tagging commit %s as %s\n",
7396 	    commit_id_str, tag_name);
7397 	if (initial_content_len == -1) {
7398 		err = got_error_from_errno("asprintf");
7399 		goto done;
7400 	}
7401 
7402 	err = got_opentemp_named_fd(tagmsg_path, &fd, template, "");
7403 	if (err)
7404 		goto done;
7405 
7406 	if (write(fd, initial_content, initial_content_len) == -1) {
7407 		err = got_error_from_errno2("write", *tagmsg_path);
7408 		goto done;
7409 	}
7410 
7411 	err = get_editor(&editor);
7412 	if (err)
7413 		goto done;
7414 	err = edit_logmsg(tagmsg, editor, *tagmsg_path, initial_content,
7415 	    initial_content_len, 1);
7416 done:
7417 	free(initial_content);
7418 	free(template);
7419 	free(editor);
7420 
7421 	if (fd != -1 && close(fd) == -1 && err == NULL)
7422 		err = got_error_from_errno2("close", *tagmsg_path);
7423 
7424 	if (err) {
7425 		free(*tagmsg);
7426 		*tagmsg = NULL;
7427 	}
7428 	return err;
7429 }
7430 
7431 static const struct got_error *
7432 add_tag(struct got_repository *repo, const char *tagger,
7433     const char *tag_name, const char *commit_arg, const char *tagmsg_arg,
7434     const char *signer_id, int verbosity)
7435 {
7436 	const struct got_error *err = NULL;
7437 	struct got_object_id *commit_id = NULL, *tag_id = NULL;
7438 	char *label = NULL, *commit_id_str = NULL;
7439 	struct got_reference *ref = NULL;
7440 	char *refname = NULL, *tagmsg = NULL;
7441 	char *tagmsg_path = NULL, *tag_id_str = NULL;
7442 	int preserve_tagmsg = 0;
7443 	struct got_reflist_head refs;
7444 
7445 	TAILQ_INIT(&refs);
7446 
7447 	/*
7448 	 * Don't let the user create a tag name with a leading '-'.
7449 	 * While technically a valid reference name, this case is usually
7450 	 * an unintended typo.
7451 	 */
7452 	if (tag_name[0] == '-')
7453 		return got_error_path(tag_name, GOT_ERR_REF_NAME_MINUS);
7454 
7455 	err = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name, NULL);
7456 	if (err)
7457 		goto done;
7458 
7459 	err = got_repo_match_object_id(&commit_id, &label, commit_arg,
7460 	    GOT_OBJ_TYPE_COMMIT, &refs, repo);
7461 	if (err)
7462 		goto done;
7463 
7464 	err = got_object_id_str(&commit_id_str, commit_id);
7465 	if (err)
7466 		goto done;
7467 
7468 	err = get_tag_refname(&refname, tag_name);
7469 	if (err)
7470 		goto done;
7471 	if (strncmp("refs/tags/", tag_name, 10) == 0)
7472 		tag_name += 10;
7473 
7474 	err = got_ref_open(&ref, repo, refname, 0);
7475 	if (err == NULL) {
7476 		err = got_error(GOT_ERR_TAG_EXISTS);
7477 		goto done;
7478 	} else if (err->code != GOT_ERR_NOT_REF)
7479 		goto done;
7480 
7481 	if (tagmsg_arg == NULL) {
7482 		err = get_tag_message(&tagmsg, &tagmsg_path, commit_id_str,
7483 		    tag_name, got_repo_get_path(repo));
7484 		if (err) {
7485 			if (err->code != GOT_ERR_COMMIT_MSG_EMPTY &&
7486 			    tagmsg_path != NULL)
7487 				preserve_tagmsg = 1;
7488 			goto done;
7489 		}
7490 		/* Editor is done; we can now apply unveil(2) */
7491 		err = got_sigs_apply_unveil();
7492 		if (err)
7493 			goto done;
7494 		err = apply_unveil(got_repo_get_path(repo), 0, NULL);
7495 		if (err)
7496 			goto done;
7497 	}
7498 
7499 	err = got_object_tag_create(&tag_id, tag_name, commit_id,
7500 	    tagger, time(NULL), tagmsg ? tagmsg : tagmsg_arg, signer_id, repo,
7501 	    verbosity);
7502 	if (err) {
7503 		if (tagmsg_path)
7504 			preserve_tagmsg = 1;
7505 		goto done;
7506 	}
7507 
7508 	err = got_ref_alloc(&ref, refname, tag_id);
7509 	if (err) {
7510 		if (tagmsg_path)
7511 			preserve_tagmsg = 1;
7512 		goto done;
7513 	}
7514 
7515 	err = got_ref_write(ref, repo);
7516 	if (err) {
7517 		if (tagmsg_path)
7518 			preserve_tagmsg = 1;
7519 		goto done;
7520 	}
7521 
7522 	err = got_object_id_str(&tag_id_str, tag_id);
7523 	if (err) {
7524 		if (tagmsg_path)
7525 			preserve_tagmsg = 1;
7526 		goto done;
7527 	}
7528 	printf("Created tag %s\n", tag_id_str);
7529 done:
7530 	if (preserve_tagmsg) {
7531 		fprintf(stderr, "%s: tag message preserved in %s\n",
7532 		    getprogname(), tagmsg_path);
7533 	} else if (tagmsg_path && unlink(tagmsg_path) == -1 && err == NULL)
7534 		err = got_error_from_errno2("unlink", tagmsg_path);
7535 	free(tag_id_str);
7536 	if (ref)
7537 		got_ref_close(ref);
7538 	free(commit_id);
7539 	free(commit_id_str);
7540 	free(refname);
7541 	free(tagmsg);
7542 	free(tagmsg_path);
7543 	got_ref_list_free(&refs);
7544 	return err;
7545 }
7546 
7547 static const struct got_error *
7548 cmd_tag(int argc, char *argv[])
7549 {
7550 	const struct got_error *error = NULL;
7551 	struct got_repository *repo = NULL;
7552 	struct got_worktree *worktree = NULL;
7553 	char *cwd = NULL, *repo_path = NULL, *commit_id_str = NULL;
7554 	char *gitconfig_path = NULL, *tagger = NULL;
7555 	char *allowed_signers = NULL, *revoked_signers = NULL;
7556 	const char *signer_id = NULL;
7557 	const char *tag_name = NULL, *commit_id_arg = NULL, *tagmsg = NULL;
7558 	int ch, do_list = 0, verify_tags = 0, verbosity = 0;
7559 	int *pack_fds = NULL;
7560 
7561 #ifndef PROFILE
7562 	if (pledge("stdio rpath wpath cpath fattr flock proc exec "
7563 	    "sendfd unveil", NULL) == -1)
7564 		err(1, "pledge");
7565 #endif
7566 
7567 	while ((ch = getopt(argc, argv, "c:lm:r:s:Vv")) != -1) {
7568 		switch (ch) {
7569 		case 'c':
7570 			commit_id_arg = optarg;
7571 			break;
7572 		case 'l':
7573 			do_list = 1;
7574 			break;
7575 		case 'm':
7576 			tagmsg = optarg;
7577 			break;
7578 		case 'r':
7579 			repo_path = realpath(optarg, NULL);
7580 			if (repo_path == NULL) {
7581 				error = got_error_from_errno2("realpath",
7582 				    optarg);
7583 				goto done;
7584 			}
7585 			got_path_strip_trailing_slashes(repo_path);
7586 			break;
7587 		case 's':
7588 			signer_id = optarg;
7589 			break;
7590 		case 'V':
7591 			verify_tags = 1;
7592 			break;
7593 		case 'v':
7594 			if (verbosity < 0)
7595 				verbosity = 0;
7596 			else if (verbosity < 3)
7597 				verbosity++;
7598 			break;
7599 		default:
7600 			usage_tag();
7601 			/* NOTREACHED */
7602 		}
7603 	}
7604 
7605 	argc -= optind;
7606 	argv += optind;
7607 
7608 	if (do_list || verify_tags) {
7609 		if (commit_id_arg != NULL)
7610 			errx(1,
7611 			    "-c option can only be used when creating a tag");
7612 		if (tagmsg) {
7613 			if (do_list)
7614 				option_conflict('l', 'm');
7615 			else
7616 				option_conflict('V', 'm');
7617 		}
7618 		if (signer_id) {
7619 			if (do_list)
7620 				option_conflict('l', 's');
7621 			else
7622 				option_conflict('V', 's');
7623 		}
7624 		if (argc > 1)
7625 			usage_tag();
7626 	} else if (argc != 1)
7627 		usage_tag();
7628 
7629 	if (argc == 1)
7630 		tag_name = argv[0];
7631 
7632 	cwd = getcwd(NULL, 0);
7633 	if (cwd == NULL) {
7634 		error = got_error_from_errno("getcwd");
7635 		goto done;
7636 	}
7637 
7638 	error = got_repo_pack_fds_open(&pack_fds);
7639 	if (error != NULL)
7640 		goto done;
7641 
7642 	if (repo_path == NULL) {
7643 		error = got_worktree_open(&worktree, cwd);
7644 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
7645 			goto done;
7646 		else
7647 			error = NULL;
7648 		if (worktree) {
7649 			repo_path =
7650 			    strdup(got_worktree_get_repo_path(worktree));
7651 			if (repo_path == NULL)
7652 				error = got_error_from_errno("strdup");
7653 			if (error)
7654 				goto done;
7655 		} else {
7656 			repo_path = strdup(cwd);
7657 			if (repo_path == NULL) {
7658 				error = got_error_from_errno("strdup");
7659 				goto done;
7660 			}
7661 		}
7662 	}
7663 
7664 	if (do_list || verify_tags) {
7665 		error = got_repo_open(&repo, repo_path, NULL, pack_fds);
7666 		if (error != NULL)
7667 			goto done;
7668 		error = get_allowed_signers(&allowed_signers, repo, worktree);
7669 		if (error)
7670 			goto done;
7671 		error = get_revoked_signers(&revoked_signers, repo, worktree);
7672 		if (error)
7673 			goto done;
7674 		if (worktree) {
7675 			/* Release work tree lock. */
7676 			got_worktree_close(worktree);
7677 			worktree = NULL;
7678 		}
7679 
7680 		/*
7681 		 * Remove "cpath" promise unless needed for signature tmpfile
7682 		 * creation.
7683 		 */
7684 		if (verify_tags)
7685 		 	got_sigs_apply_unveil();
7686 		else {
7687 #ifndef PROFILE
7688 			if (pledge("stdio rpath wpath flock proc exec sendfd "
7689 			    "unveil", NULL) == -1)
7690 				err(1, "pledge");
7691 #endif
7692 		}
7693 		error = apply_unveil(got_repo_get_path(repo), 1, NULL);
7694 		if (error)
7695 			goto done;
7696 		error = list_tags(repo, tag_name, verify_tags, allowed_signers,
7697 		    revoked_signers, verbosity);
7698 	} else {
7699 		error = get_gitconfig_path(&gitconfig_path);
7700 		if (error)
7701 			goto done;
7702 		error = got_repo_open(&repo, repo_path, gitconfig_path,
7703 		    pack_fds);
7704 		if (error != NULL)
7705 			goto done;
7706 
7707 		error = get_author(&tagger, repo, worktree);
7708 		if (error)
7709 			goto done;
7710 		if (signer_id == NULL)
7711 			signer_id = get_signer_id(repo, worktree);
7712 
7713 		if (tagmsg) {
7714 			if (signer_id) {
7715 				error = got_sigs_apply_unveil();
7716 				if (error)
7717 					goto done;
7718 			}
7719 			error = apply_unveil(got_repo_get_path(repo), 0, NULL);
7720 			if (error)
7721 				goto done;
7722 		}
7723 
7724 		if (commit_id_arg == NULL) {
7725 			struct got_reference *head_ref;
7726 			struct got_object_id *commit_id;
7727 			error = got_ref_open(&head_ref, repo,
7728 			    worktree ? got_worktree_get_head_ref_name(worktree)
7729 			    : GOT_REF_HEAD, 0);
7730 			if (error)
7731 				goto done;
7732 			error = got_ref_resolve(&commit_id, repo, head_ref);
7733 			got_ref_close(head_ref);
7734 			if (error)
7735 				goto done;
7736 			error = got_object_id_str(&commit_id_str, commit_id);
7737 			free(commit_id);
7738 			if (error)
7739 				goto done;
7740 		}
7741 
7742 		if (worktree) {
7743 			/* Release work tree lock. */
7744 			got_worktree_close(worktree);
7745 			worktree = NULL;
7746 		}
7747 
7748 		error = add_tag(repo, tagger, tag_name,
7749 		    commit_id_str ? commit_id_str : commit_id_arg, tagmsg,
7750 		    signer_id, verbosity);
7751 	}
7752 done:
7753 	if (repo) {
7754 		const struct got_error *close_err = got_repo_close(repo);
7755 		if (error == NULL)
7756 			error = close_err;
7757 	}
7758 	if (worktree)
7759 		got_worktree_close(worktree);
7760 	if (pack_fds) {
7761 		const struct got_error *pack_err =
7762 		    got_repo_pack_fds_close(pack_fds);
7763 		if (error == NULL)
7764 			error = pack_err;
7765 	}
7766 	free(cwd);
7767 	free(repo_path);
7768 	free(gitconfig_path);
7769 	free(commit_id_str);
7770 	free(tagger);
7771 	free(allowed_signers);
7772 	free(revoked_signers);
7773 	return error;
7774 }
7775 
7776 __dead static void
7777 usage_add(void)
7778 {
7779 	fprintf(stderr, "usage: %s add [-IR] path ...\n", getprogname());
7780 	exit(1);
7781 }
7782 
7783 static const struct got_error *
7784 add_progress(void *arg, unsigned char status, const char *path)
7785 {
7786 	while (path[0] == '/')
7787 		path++;
7788 	printf("%c  %s\n", status, path);
7789 	return NULL;
7790 }
7791 
7792 static const struct got_error *
7793 cmd_add(int argc, char *argv[])
7794 {
7795 	const struct got_error *error = NULL;
7796 	struct got_repository *repo = NULL;
7797 	struct got_worktree *worktree = NULL;
7798 	char *cwd = NULL;
7799 	struct got_pathlist_head paths;
7800 	struct got_pathlist_entry *pe;
7801 	int ch, can_recurse = 0, no_ignores = 0;
7802 	int *pack_fds = NULL;
7803 
7804 	TAILQ_INIT(&paths);
7805 
7806 #ifndef PROFILE
7807 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
7808 	    NULL) == -1)
7809 		err(1, "pledge");
7810 #endif
7811 
7812 	while ((ch = getopt(argc, argv, "IR")) != -1) {
7813 		switch (ch) {
7814 		case 'I':
7815 			no_ignores = 1;
7816 			break;
7817 		case 'R':
7818 			can_recurse = 1;
7819 			break;
7820 		default:
7821 			usage_add();
7822 			/* NOTREACHED */
7823 		}
7824 	}
7825 
7826 	argc -= optind;
7827 	argv += optind;
7828 
7829 	if (argc < 1)
7830 		usage_add();
7831 
7832 	cwd = getcwd(NULL, 0);
7833 	if (cwd == NULL) {
7834 		error = got_error_from_errno("getcwd");
7835 		goto done;
7836 	}
7837 
7838 	error = got_repo_pack_fds_open(&pack_fds);
7839 	if (error != NULL)
7840 		goto done;
7841 
7842 	error = got_worktree_open(&worktree, cwd);
7843 	if (error) {
7844 		if (error->code == GOT_ERR_NOT_WORKTREE)
7845 			error = wrap_not_worktree_error(error, "add", cwd);
7846 		goto done;
7847 	}
7848 
7849 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
7850 	    NULL, pack_fds);
7851 	if (error != NULL)
7852 		goto done;
7853 
7854 	error = apply_unveil(got_repo_get_path(repo), 1,
7855 	    got_worktree_get_root_path(worktree));
7856 	if (error)
7857 		goto done;
7858 
7859 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
7860 	if (error)
7861 		goto done;
7862 
7863 	if (!can_recurse) {
7864 		char *ondisk_path;
7865 		struct stat sb;
7866 		TAILQ_FOREACH(pe, &paths, entry) {
7867 			if (asprintf(&ondisk_path, "%s/%s",
7868 			    got_worktree_get_root_path(worktree),
7869 			    pe->path) == -1) {
7870 				error = got_error_from_errno("asprintf");
7871 				goto done;
7872 			}
7873 			if (lstat(ondisk_path, &sb) == -1) {
7874 				if (errno == ENOENT) {
7875 					free(ondisk_path);
7876 					continue;
7877 				}
7878 				error = got_error_from_errno2("lstat",
7879 				    ondisk_path);
7880 				free(ondisk_path);
7881 				goto done;
7882 			}
7883 			free(ondisk_path);
7884 			if (S_ISDIR(sb.st_mode)) {
7885 				error = got_error_msg(GOT_ERR_BAD_PATH,
7886 				    "adding directories requires -R option");
7887 				goto done;
7888 			}
7889 		}
7890 	}
7891 
7892 	error = got_worktree_schedule_add(worktree, &paths, add_progress,
7893 	    NULL, repo, no_ignores);
7894 done:
7895 	if (repo) {
7896 		const struct got_error *close_err = got_repo_close(repo);
7897 		if (error == NULL)
7898 			error = close_err;
7899 	}
7900 	if (worktree)
7901 		got_worktree_close(worktree);
7902 	if (pack_fds) {
7903 		const struct got_error *pack_err =
7904 		    got_repo_pack_fds_close(pack_fds);
7905 		if (error == NULL)
7906 			error = pack_err;
7907 	}
7908 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_PATH);
7909 	free(cwd);
7910 	return error;
7911 }
7912 
7913 __dead static void
7914 usage_remove(void)
7915 {
7916 	fprintf(stderr, "usage: %s remove [-fkR] [-s status-codes] path ...\n",
7917 	    getprogname());
7918 	exit(1);
7919 }
7920 
7921 static const struct got_error *
7922 print_remove_status(void *arg, unsigned char status,
7923     unsigned char staged_status, const char *path)
7924 {
7925 	while (path[0] == '/')
7926 		path++;
7927 	if (status == GOT_STATUS_NONEXISTENT)
7928 		return NULL;
7929 	if (status == staged_status && (status == GOT_STATUS_DELETE))
7930 		status = GOT_STATUS_NO_CHANGE;
7931 	printf("%c%c %s\n", status, staged_status, path);
7932 	return NULL;
7933 }
7934 
7935 static const struct got_error *
7936 cmd_remove(int argc, char *argv[])
7937 {
7938 	const struct got_error *error = NULL;
7939 	struct got_worktree *worktree = NULL;
7940 	struct got_repository *repo = NULL;
7941 	const char *status_codes = NULL;
7942 	char *cwd = NULL;
7943 	struct got_pathlist_head paths;
7944 	struct got_pathlist_entry *pe;
7945 	int ch, delete_local_mods = 0, can_recurse = 0, keep_on_disk = 0, i;
7946 	int ignore_missing_paths = 0;
7947 	int *pack_fds = NULL;
7948 
7949 	TAILQ_INIT(&paths);
7950 
7951 #ifndef PROFILE
7952 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
7953 	    NULL) == -1)
7954 		err(1, "pledge");
7955 #endif
7956 
7957 	while ((ch = getopt(argc, argv, "fkRs:")) != -1) {
7958 		switch (ch) {
7959 		case 'f':
7960 			delete_local_mods = 1;
7961 			ignore_missing_paths = 1;
7962 			break;
7963 		case 'k':
7964 			keep_on_disk = 1;
7965 			break;
7966 		case 'R':
7967 			can_recurse = 1;
7968 			break;
7969 		case 's':
7970 			for (i = 0; i < strlen(optarg); i++) {
7971 				switch (optarg[i]) {
7972 				case GOT_STATUS_MODIFY:
7973 					delete_local_mods = 1;
7974 					break;
7975 				case GOT_STATUS_MISSING:
7976 					ignore_missing_paths = 1;
7977 					break;
7978 				default:
7979 					errx(1, "invalid status code '%c'",
7980 					    optarg[i]);
7981 				}
7982 			}
7983 			status_codes = optarg;
7984 			break;
7985 		default:
7986 			usage_remove();
7987 			/* NOTREACHED */
7988 		}
7989 	}
7990 
7991 	argc -= optind;
7992 	argv += optind;
7993 
7994 	if (argc < 1)
7995 		usage_remove();
7996 
7997 	cwd = getcwd(NULL, 0);
7998 	if (cwd == NULL) {
7999 		error = got_error_from_errno("getcwd");
8000 		goto done;
8001 	}
8002 
8003 	error = got_repo_pack_fds_open(&pack_fds);
8004 	if (error != NULL)
8005 		goto done;
8006 
8007 	error = got_worktree_open(&worktree, cwd);
8008 	if (error) {
8009 		if (error->code == GOT_ERR_NOT_WORKTREE)
8010 			error = wrap_not_worktree_error(error, "remove", cwd);
8011 		goto done;
8012 	}
8013 
8014 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
8015 	    NULL, pack_fds);
8016 	if (error)
8017 		goto done;
8018 
8019 	error = apply_unveil(got_repo_get_path(repo), 1,
8020 	    got_worktree_get_root_path(worktree));
8021 	if (error)
8022 		goto done;
8023 
8024 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
8025 	if (error)
8026 		goto done;
8027 
8028 	if (!can_recurse) {
8029 		char *ondisk_path;
8030 		struct stat sb;
8031 		TAILQ_FOREACH(pe, &paths, entry) {
8032 			if (asprintf(&ondisk_path, "%s/%s",
8033 			    got_worktree_get_root_path(worktree),
8034 			    pe->path) == -1) {
8035 				error = got_error_from_errno("asprintf");
8036 				goto done;
8037 			}
8038 			if (lstat(ondisk_path, &sb) == -1) {
8039 				if (errno == ENOENT) {
8040 					free(ondisk_path);
8041 					continue;
8042 				}
8043 				error = got_error_from_errno2("lstat",
8044 				    ondisk_path);
8045 				free(ondisk_path);
8046 				goto done;
8047 			}
8048 			free(ondisk_path);
8049 			if (S_ISDIR(sb.st_mode)) {
8050 				error = got_error_msg(GOT_ERR_BAD_PATH,
8051 				    "removing directories requires -R option");
8052 				goto done;
8053 			}
8054 		}
8055 	}
8056 
8057 	error = got_worktree_schedule_delete(worktree, &paths,
8058 	    delete_local_mods, status_codes, print_remove_status, NULL,
8059 	    repo, keep_on_disk, ignore_missing_paths);
8060 done:
8061 	if (repo) {
8062 		const struct got_error *close_err = got_repo_close(repo);
8063 		if (error == NULL)
8064 			error = close_err;
8065 	}
8066 	if (worktree)
8067 		got_worktree_close(worktree);
8068 	if (pack_fds) {
8069 		const struct got_error *pack_err =
8070 		    got_repo_pack_fds_close(pack_fds);
8071 		if (error == NULL)
8072 			error = pack_err;
8073 	}
8074 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_PATH);
8075 	free(cwd);
8076 	return error;
8077 }
8078 
8079 __dead static void
8080 usage_patch(void)
8081 {
8082 	fprintf(stderr, "usage: %s patch [-nR] [-c commit] [-p strip-count] "
8083 	    "[patchfile]\n", getprogname());
8084 	exit(1);
8085 }
8086 
8087 static const struct got_error *
8088 patch_from_stdin(int *patchfd)
8089 {
8090 	const struct got_error *err = NULL;
8091 	ssize_t r;
8092 	char buf[BUFSIZ];
8093 	sig_t sighup, sigint, sigquit;
8094 
8095 	*patchfd = got_opentempfd();
8096 	if (*patchfd == -1)
8097 		return got_error_from_errno("got_opentempfd");
8098 
8099 	sighup = signal(SIGHUP, SIG_DFL);
8100 	sigint = signal(SIGINT, SIG_DFL);
8101 	sigquit = signal(SIGQUIT, SIG_DFL);
8102 
8103 	for (;;) {
8104 		r = read(0, buf, sizeof(buf));
8105 		if (r == -1) {
8106 			err = got_error_from_errno("read");
8107 			break;
8108 		}
8109 		if (r == 0)
8110 			break;
8111 		if (write(*patchfd, buf, r) == -1) {
8112 			err = got_error_from_errno("write");
8113 			break;
8114 		}
8115 	}
8116 
8117 	signal(SIGHUP, sighup);
8118 	signal(SIGINT, sigint);
8119 	signal(SIGQUIT, sigquit);
8120 
8121 	if (err == NULL && lseek(*patchfd, 0, SEEK_SET) == -1)
8122 		err = got_error_from_errno("lseek");
8123 
8124 	if (err != NULL) {
8125 		close(*patchfd);
8126 		*patchfd = -1;
8127 	}
8128 
8129 	return err;
8130 }
8131 
8132 static const struct got_error *
8133 patch_progress(void *arg, const char *old, const char *new,
8134     unsigned char status, const struct got_error *error, int old_from,
8135     int old_lines, int new_from, int new_lines, int offset,
8136     int ws_mangled, const struct got_error *hunk_err)
8137 {
8138 	const char *path = new == NULL ? old : new;
8139 
8140 	while (*path == '/')
8141 		path++;
8142 
8143 	if (status != 0)
8144 		printf("%c  %s\n", status, path);
8145 
8146 	if (error != NULL)
8147 		fprintf(stderr, "%s: %s\n", getprogname(), error->msg);
8148 
8149 	if (offset != 0 || hunk_err != NULL || ws_mangled) {
8150 		printf("@@ -%d,%d +%d,%d @@ ", old_from,
8151 		    old_lines, new_from, new_lines);
8152 		if (hunk_err != NULL)
8153 			printf("%s\n", hunk_err->msg);
8154 		else if (offset != 0)
8155 			printf("applied with offset %d\n", offset);
8156 		else
8157 			printf("hunk contains mangled whitespace\n");
8158 	}
8159 
8160 	return NULL;
8161 }
8162 
8163 static const struct got_error *
8164 cmd_patch(int argc, char *argv[])
8165 {
8166 	const struct got_error *error = NULL, *close_error = NULL;
8167 	struct got_worktree *worktree = NULL;
8168 	struct got_repository *repo = NULL;
8169 	struct got_reflist_head refs;
8170 	struct got_object_id *commit_id = NULL;
8171 	const char *commit_id_str = NULL;
8172 	struct stat sb;
8173 	const char *errstr;
8174 	char *cwd = NULL;
8175 	int ch, nop = 0, strip = -1, reverse = 0;
8176 	int patchfd;
8177 	int *pack_fds = NULL;
8178 
8179 	TAILQ_INIT(&refs);
8180 
8181 #ifndef PROFILE
8182 	if (pledge("stdio rpath wpath cpath fattr proc exec sendfd flock "
8183 	    "unveil", NULL) == -1)
8184 		err(1, "pledge");
8185 #endif
8186 
8187 	while ((ch = getopt(argc, argv, "c:np:R")) != -1) {
8188 		switch (ch) {
8189 		case 'c':
8190 			commit_id_str = optarg;
8191 			break;
8192 		case 'n':
8193 			nop = 1;
8194 			break;
8195 		case 'p':
8196 			strip = strtonum(optarg, 0, INT_MAX, &errstr);
8197 			if (errstr != NULL)
8198 				errx(1, "pathname strip count is %s: %s",
8199 				     errstr, optarg);
8200 			break;
8201 		case 'R':
8202 			reverse = 1;
8203 			break;
8204 		default:
8205 			usage_patch();
8206 			/* NOTREACHED */
8207 		}
8208 	}
8209 
8210 	argc -= optind;
8211 	argv += optind;
8212 
8213 	if (argc == 0) {
8214 		error = patch_from_stdin(&patchfd);
8215 		if (error)
8216 			return error;
8217 	} else if (argc == 1) {
8218 		patchfd = open(argv[0], O_RDONLY);
8219 		if (patchfd == -1) {
8220 			error = got_error_from_errno2("open", argv[0]);
8221 			return error;
8222 		}
8223 		if (fstat(patchfd, &sb) == -1) {
8224 			error = got_error_from_errno2("fstat", argv[0]);
8225 			goto done;
8226 		}
8227 		if (!S_ISREG(sb.st_mode)) {
8228 			error = got_error_path(argv[0], GOT_ERR_BAD_FILETYPE);
8229 			goto done;
8230 		}
8231 	} else
8232 		usage_patch();
8233 
8234 	if ((cwd = getcwd(NULL, 0)) == NULL) {
8235 		error = got_error_from_errno("getcwd");
8236 		goto done;
8237 	}
8238 
8239 	error = got_repo_pack_fds_open(&pack_fds);
8240 	if (error != NULL)
8241 		goto done;
8242 
8243 	error = got_worktree_open(&worktree, cwd);
8244 	if (error != NULL)
8245 		goto done;
8246 
8247 	const char *repo_path = got_worktree_get_repo_path(worktree);
8248 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
8249 	if (error != NULL)
8250 		goto done;
8251 
8252 	error = apply_unveil(got_repo_get_path(repo), 0,
8253 	    got_worktree_get_root_path(worktree));
8254 	if (error != NULL)
8255 		goto done;
8256 
8257 	error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name, NULL);
8258 	if (error)
8259 		goto done;
8260 
8261 	if (commit_id_str != NULL) {
8262 		error = got_repo_match_object_id(&commit_id, NULL,
8263 		    commit_id_str, GOT_OBJ_TYPE_COMMIT, &refs, repo);
8264 		if (error)
8265 			goto done;
8266 	}
8267 
8268 	error = got_patch(patchfd, worktree, repo, nop, strip, reverse,
8269 	    commit_id, &patch_progress, NULL, check_cancelled, NULL);
8270 
8271 done:
8272 	got_ref_list_free(&refs);
8273 	free(commit_id);
8274 	if (repo) {
8275 		close_error = got_repo_close(repo);
8276 		if (error == NULL)
8277 			error = close_error;
8278 	}
8279 	if (worktree != NULL) {
8280 		close_error = got_worktree_close(worktree);
8281 		if (error == NULL)
8282 			error = close_error;
8283 	}
8284 	if (pack_fds) {
8285 		const struct got_error *pack_err =
8286 		    got_repo_pack_fds_close(pack_fds);
8287 		if (error == NULL)
8288 			error = pack_err;
8289 	}
8290 	free(cwd);
8291 	return error;
8292 }
8293 
8294 __dead static void
8295 usage_revert(void)
8296 {
8297 	fprintf(stderr, "usage: %s revert [-pR] [-F response-script] path ...\n",
8298 	    getprogname());
8299 	exit(1);
8300 }
8301 
8302 static const struct got_error *
8303 revert_progress(void *arg, unsigned char status, const char *path)
8304 {
8305 	if (status == GOT_STATUS_UNVERSIONED)
8306 		return NULL;
8307 
8308 	while (path[0] == '/')
8309 		path++;
8310 	printf("%c  %s\n", status, path);
8311 	return NULL;
8312 }
8313 
8314 struct choose_patch_arg {
8315 	FILE *patch_script_file;
8316 	const char *action;
8317 };
8318 
8319 static const struct got_error *
8320 show_change(unsigned char status, const char *path, FILE *patch_file, int n,
8321     int nchanges, const char *action)
8322 {
8323 	const struct got_error *err;
8324 	char *line = NULL;
8325 	size_t linesize = 0;
8326 	ssize_t linelen;
8327 
8328 	switch (status) {
8329 	case GOT_STATUS_ADD:
8330 		printf("A  %s\n%s this addition? [y/n] ", path, action);
8331 		break;
8332 	case GOT_STATUS_DELETE:
8333 		printf("D  %s\n%s this deletion? [y/n] ", path, action);
8334 		break;
8335 	case GOT_STATUS_MODIFY:
8336 		if (fseek(patch_file, 0L, SEEK_SET) == -1)
8337 			return got_error_from_errno("fseek");
8338 		printf(GOT_COMMIT_SEP_STR);
8339 		while ((linelen = getline(&line, &linesize, patch_file)) != -1)
8340 			printf("%s", line);
8341 		if (linelen == -1 && ferror(patch_file)) {
8342 			err = got_error_from_errno("getline");
8343 			free(line);
8344 			return err;
8345 		}
8346 		free(line);
8347 		printf(GOT_COMMIT_SEP_STR);
8348 		printf("M  %s (change %d of %d)\n%s this change? [y/n/q] ",
8349 		    path, n, nchanges, action);
8350 		break;
8351 	default:
8352 		return got_error_path(path, GOT_ERR_FILE_STATUS);
8353 	}
8354 
8355 	fflush(stdout);
8356 	return NULL;
8357 }
8358 
8359 static const struct got_error *
8360 choose_patch(int *choice, void *arg, unsigned char status, const char *path,
8361     FILE *patch_file, int n, int nchanges)
8362 {
8363 	const struct got_error *err = NULL;
8364 	char *line = NULL;
8365 	size_t linesize = 0;
8366 	ssize_t linelen;
8367 	int resp = ' ';
8368 	struct choose_patch_arg *a = arg;
8369 
8370 	*choice = GOT_PATCH_CHOICE_NONE;
8371 
8372 	if (a->patch_script_file) {
8373 		char *nl;
8374 		err = show_change(status, path, patch_file, n, nchanges,
8375 		    a->action);
8376 		if (err)
8377 			return err;
8378 		linelen = getline(&line, &linesize, a->patch_script_file);
8379 		if (linelen == -1) {
8380 			if (ferror(a->patch_script_file))
8381 				return got_error_from_errno("getline");
8382 			return NULL;
8383 		}
8384 		nl = strchr(line, '\n');
8385 		if (nl)
8386 			*nl = '\0';
8387 		if (strcmp(line, "y") == 0) {
8388 			*choice = GOT_PATCH_CHOICE_YES;
8389 			printf("y\n");
8390 		} else if (strcmp(line, "n") == 0) {
8391 			*choice = GOT_PATCH_CHOICE_NO;
8392 			printf("n\n");
8393 		} else if (strcmp(line, "q") == 0 &&
8394 		    status == GOT_STATUS_MODIFY) {
8395 			*choice = GOT_PATCH_CHOICE_QUIT;
8396 			printf("q\n");
8397 		} else
8398 			printf("invalid response '%s'\n", line);
8399 		free(line);
8400 		return NULL;
8401 	}
8402 
8403 	while (resp != 'y' && resp != 'n' && resp != 'q') {
8404 		err = show_change(status, path, patch_file, n, nchanges,
8405 		    a->action);
8406 		if (err)
8407 			return err;
8408 		resp = getchar();
8409 		if (resp == '\n')
8410 			resp = getchar();
8411 		if (status == GOT_STATUS_MODIFY) {
8412 			if (resp != 'y' && resp != 'n' && resp != 'q') {
8413 				printf("invalid response '%c'\n", resp);
8414 				resp = ' ';
8415 			}
8416 		} else if (resp != 'y' && resp != 'n') {
8417 				printf("invalid response '%c'\n", resp);
8418 				resp = ' ';
8419 		}
8420 	}
8421 
8422 	if (resp == 'y')
8423 		*choice = GOT_PATCH_CHOICE_YES;
8424 	else if (resp == 'n')
8425 		*choice = GOT_PATCH_CHOICE_NO;
8426 	else if (resp == 'q' && status == GOT_STATUS_MODIFY)
8427 		*choice = GOT_PATCH_CHOICE_QUIT;
8428 
8429 	return NULL;
8430 }
8431 
8432 struct wt_commitable_path_arg {
8433 	struct got_pathlist_head	*commit_paths;
8434 	int				*has_changes;
8435 };
8436 
8437 /*
8438  * Shortcut work tree status callback to determine if the set of paths scanned
8439  * has at least one versioned path that is being modified and, if not NULL, is
8440  * in the arg->commit_paths list.  Set arg and return GOT_ERR_FILE_MODIFIED as
8441  * soon as a path is passed with a status that satisfies this criteria.
8442  */
8443 static const struct got_error *
8444 worktree_has_commitable_path(void *arg, unsigned char status,
8445     unsigned char staged_status, const char *path,
8446     struct got_object_id *blob_id, struct got_object_id *staged_blob_id,
8447     struct got_object_id *commit_id, int dirfd, const char *de_name)
8448 {
8449 	struct wt_commitable_path_arg *a = arg;
8450 
8451 	if (status == staged_status && (status == GOT_STATUS_DELETE))
8452 		status = GOT_STATUS_NO_CHANGE;
8453 
8454 	if (!(status == GOT_STATUS_NO_CHANGE ||
8455 	    status == GOT_STATUS_UNVERSIONED) ||
8456 	    staged_status != GOT_STATUS_NO_CHANGE) {
8457 		if (a->commit_paths != NULL) {
8458 			struct got_pathlist_entry *pe;
8459 
8460 			TAILQ_FOREACH(pe, a->commit_paths, entry) {
8461 				if (strncmp(path, pe->path,
8462 				    pe->path_len) == 0) {
8463 					*a->has_changes = 1;
8464 					break;
8465 				}
8466 			}
8467 		} else
8468 			*a->has_changes = 1;
8469 
8470 		if (*a->has_changes)
8471 			return got_error(GOT_ERR_FILE_MODIFIED);
8472 	}
8473 
8474 	return NULL;
8475 }
8476 
8477 /*
8478  * Check that the changeset of the commit identified by id is
8479  * comprised of at least one modified path that is being committed.
8480  */
8481 static const struct got_error *
8482 commit_path_changed_in_worktree(struct wt_commitable_path_arg *wcpa,
8483     struct got_object_id *id, struct got_worktree *worktree,
8484     struct got_repository *repo)
8485 {
8486 	const struct got_error		*err;
8487 	struct got_pathlist_head	 paths;
8488 	struct got_commit_object	*commit = NULL, *pcommit = NULL;
8489 	struct got_tree_object		*tree = NULL, *ptree = NULL;
8490 	struct got_object_qid		*pid;
8491 
8492 	TAILQ_INIT(&paths);
8493 
8494 	err = got_object_open_as_commit(&commit, repo, id);
8495 	if (err)
8496 		goto done;
8497 
8498 	err = got_object_open_as_tree(&tree, repo,
8499 	    got_object_commit_get_tree_id(commit));
8500 	if (err)
8501 		goto done;
8502 
8503 	pid = STAILQ_FIRST(got_object_commit_get_parent_ids(commit));
8504 	if (pid != NULL) {
8505 		err = got_object_open_as_commit(&pcommit, repo, &pid->id);
8506 		if (err)
8507 			goto done;
8508 
8509 		err = got_object_open_as_tree(&ptree, repo,
8510 		    got_object_commit_get_tree_id(pcommit));
8511 		if (err)
8512 			goto done;
8513 	}
8514 
8515 	err = got_diff_tree(ptree, tree, NULL, NULL, -1, -1, "", "", repo,
8516 	    got_diff_tree_collect_changed_paths, &paths, 0);
8517 	if (err)
8518 		goto done;
8519 
8520 	err = got_worktree_status(worktree, &paths, repo, 0,
8521 	    worktree_has_commitable_path, wcpa, check_cancelled, NULL);
8522 	if (err && err->code == GOT_ERR_FILE_MODIFIED) {
8523 		/*
8524 		 * At least one changed path in the referenced commit is
8525 		 * modified in the work tree, that's all we need to know!
8526 		 */
8527 		err = NULL;
8528 	}
8529 
8530 done:
8531 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_ALL);
8532 	if (commit)
8533 		got_object_commit_close(commit);
8534 	if (pcommit)
8535 		got_object_commit_close(pcommit);
8536 	if (tree)
8537 		got_object_tree_close(tree);
8538 	if (ptree)
8539 		got_object_tree_close(ptree);
8540 	return err;
8541 }
8542 
8543 /*
8544  * Remove any "logmsg" reference comprised entirely of paths that have
8545  * been reverted in this work tree. If any path in the logmsg ref changeset
8546  * remains in a changed state in the worktree, do not remove the reference.
8547  */
8548 static const struct got_error *
8549 rm_logmsg_ref(struct got_worktree *worktree, struct got_repository *repo)
8550 {
8551 	const struct got_error		*err;
8552 	struct got_reflist_head		 refs;
8553 	struct got_reflist_entry	*re;
8554 	struct got_commit_object	*commit = NULL;
8555 	struct got_object_id		*commit_id = NULL;
8556 	struct wt_commitable_path_arg	 wcpa;
8557 	char				*uuidstr = NULL;
8558 
8559 	TAILQ_INIT(&refs);
8560 
8561 	err = got_worktree_get_uuid(&uuidstr, worktree);
8562 	if (err)
8563 		goto done;
8564 
8565 	err = got_ref_list(&refs, repo, "refs/got/worktree",
8566 	    got_ref_cmp_by_name, repo);
8567 	if (err)
8568 		goto done;
8569 
8570 	TAILQ_FOREACH(re, &refs, entry) {
8571 		const char	*refname;
8572 		int		 has_changes = 0;
8573 
8574 		refname = got_ref_get_name(re->ref);
8575 
8576 		if (!strncmp(refname, GOT_WORKTREE_CHERRYPICK_REF_PREFIX,
8577 		    GOT_WORKTREE_CHERRYPICK_REF_PREFIX_LEN))
8578 			refname += GOT_WORKTREE_CHERRYPICK_REF_PREFIX_LEN + 1;
8579 		else if (!strncmp(refname, GOT_WORKTREE_BACKOUT_REF_PREFIX,
8580 		    GOT_WORKTREE_BACKOUT_REF_PREFIX_LEN))
8581 			refname += GOT_WORKTREE_BACKOUT_REF_PREFIX_LEN + 1;
8582 		else
8583 			continue;
8584 
8585 		if (strncmp(refname, uuidstr, GOT_WORKTREE_UUID_STRLEN) == 0)
8586 			refname += GOT_WORKTREE_UUID_STRLEN + 1; /* skip '-' */
8587 		else
8588 			continue;
8589 
8590 		err = got_repo_match_object_id(&commit_id, NULL, refname,
8591 		    GOT_OBJ_TYPE_COMMIT, NULL, repo);
8592 		if (err)
8593 			goto done;
8594 
8595 		err = got_object_open_as_commit(&commit, repo, commit_id);
8596 		if (err)
8597 			goto done;
8598 
8599 		wcpa.commit_paths = NULL;
8600 		wcpa.has_changes = &has_changes;
8601 
8602 		err = commit_path_changed_in_worktree(&wcpa, commit_id,
8603 		    worktree, repo);
8604 		if (err)
8605 			goto done;
8606 
8607 		if (!has_changes) {
8608 			err = got_ref_delete(re->ref, repo);
8609 			if (err)
8610 				goto done;
8611 		}
8612 
8613 		got_object_commit_close(commit);
8614 		commit = NULL;
8615 		free(commit_id);
8616 		commit_id = NULL;
8617 	}
8618 
8619 done:
8620 	free(uuidstr);
8621 	free(commit_id);
8622 	got_ref_list_free(&refs);
8623 	if (commit)
8624 		got_object_commit_close(commit);
8625 	return err;
8626 }
8627 
8628 static const struct got_error *
8629 cmd_revert(int argc, char *argv[])
8630 {
8631 	const struct got_error *error = NULL;
8632 	struct got_worktree *worktree = NULL;
8633 	struct got_repository *repo = NULL;
8634 	char *cwd = NULL, *path = NULL;
8635 	struct got_pathlist_head paths;
8636 	struct got_pathlist_entry *pe;
8637 	int ch, can_recurse = 0, pflag = 0;
8638 	FILE *patch_script_file = NULL;
8639 	const char *patch_script_path = NULL;
8640 	struct choose_patch_arg cpa;
8641 	int *pack_fds = NULL;
8642 
8643 	TAILQ_INIT(&paths);
8644 
8645 #ifndef PROFILE
8646 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
8647 	    "unveil", NULL) == -1)
8648 		err(1, "pledge");
8649 #endif
8650 
8651 	while ((ch = getopt(argc, argv, "F:pR")) != -1) {
8652 		switch (ch) {
8653 		case 'F':
8654 			patch_script_path = optarg;
8655 			break;
8656 		case 'p':
8657 			pflag = 1;
8658 			break;
8659 		case 'R':
8660 			can_recurse = 1;
8661 			break;
8662 		default:
8663 			usage_revert();
8664 			/* NOTREACHED */
8665 		}
8666 	}
8667 
8668 	argc -= optind;
8669 	argv += optind;
8670 
8671 	if (argc < 1)
8672 		usage_revert();
8673 	if (patch_script_path && !pflag)
8674 		errx(1, "-F option can only be used together with -p option");
8675 
8676 	cwd = getcwd(NULL, 0);
8677 	if (cwd == NULL) {
8678 		error = got_error_from_errno("getcwd");
8679 		goto done;
8680 	}
8681 
8682 	error = got_repo_pack_fds_open(&pack_fds);
8683 	if (error != NULL)
8684 		goto done;
8685 
8686 	error = got_worktree_open(&worktree, cwd);
8687 	if (error) {
8688 		if (error->code == GOT_ERR_NOT_WORKTREE)
8689 			error = wrap_not_worktree_error(error, "revert", cwd);
8690 		goto done;
8691 	}
8692 
8693 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
8694 	    NULL, pack_fds);
8695 	if (error != NULL)
8696 		goto done;
8697 
8698 	if (patch_script_path) {
8699 		patch_script_file = fopen(patch_script_path, "re");
8700 		if (patch_script_file == NULL) {
8701 			error = got_error_from_errno2("fopen",
8702 			    patch_script_path);
8703 			goto done;
8704 		}
8705 	}
8706 
8707 	/*
8708 	 * XXX "c" perm needed on repo dir to delete merge references.
8709 	 */
8710 	error = apply_unveil(got_repo_get_path(repo), 0,
8711 	    got_worktree_get_root_path(worktree));
8712 	if (error)
8713 		goto done;
8714 
8715 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
8716 	if (error)
8717 		goto done;
8718 
8719 	if (!can_recurse) {
8720 		char *ondisk_path;
8721 		struct stat sb;
8722 		TAILQ_FOREACH(pe, &paths, entry) {
8723 			if (asprintf(&ondisk_path, "%s/%s",
8724 			    got_worktree_get_root_path(worktree),
8725 			    pe->path) == -1) {
8726 				error = got_error_from_errno("asprintf");
8727 				goto done;
8728 			}
8729 			if (lstat(ondisk_path, &sb) == -1) {
8730 				if (errno == ENOENT) {
8731 					free(ondisk_path);
8732 					continue;
8733 				}
8734 				error = got_error_from_errno2("lstat",
8735 				    ondisk_path);
8736 				free(ondisk_path);
8737 				goto done;
8738 			}
8739 			free(ondisk_path);
8740 			if (S_ISDIR(sb.st_mode)) {
8741 				error = got_error_msg(GOT_ERR_BAD_PATH,
8742 				    "reverting directories requires -R option");
8743 				goto done;
8744 			}
8745 		}
8746 	}
8747 
8748 	cpa.patch_script_file = patch_script_file;
8749 	cpa.action = "revert";
8750 	error = got_worktree_revert(worktree, &paths, revert_progress, NULL,
8751 	    pflag ? choose_patch : NULL, &cpa, repo);
8752 
8753 	error = rm_logmsg_ref(worktree, repo);
8754 done:
8755 	if (patch_script_file && fclose(patch_script_file) == EOF &&
8756 	    error == NULL)
8757 		error = got_error_from_errno2("fclose", patch_script_path);
8758 	if (repo) {
8759 		const struct got_error *close_err = got_repo_close(repo);
8760 		if (error == NULL)
8761 			error = close_err;
8762 	}
8763 	if (worktree)
8764 		got_worktree_close(worktree);
8765 	if (pack_fds) {
8766 		const struct got_error *pack_err =
8767 		    got_repo_pack_fds_close(pack_fds);
8768 		if (error == NULL)
8769 			error = pack_err;
8770 	}
8771 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_PATH);
8772 	free(path);
8773 	free(cwd);
8774 	return error;
8775 }
8776 
8777 __dead static void
8778 usage_commit(void)
8779 {
8780 	fprintf(stderr, "usage: %s commit [-CNnS] [-A author] [-F path] "
8781 	    "[-m message] [path ...]\n", getprogname());
8782 	exit(1);
8783 }
8784 
8785 struct collect_commit_logmsg_arg {
8786 	const char *cmdline_log;
8787 	const char *prepared_log;
8788 	const char *merged_log;
8789 	int non_interactive;
8790 	const char *editor;
8791 	const char *worktree_path;
8792 	const char *branch_name;
8793 	const char *repo_path;
8794 	char *logmsg_path;
8795 
8796 };
8797 
8798 static const struct got_error *
8799 read_prepared_logmsg(char **logmsg, const char *path)
8800 {
8801 	const struct got_error *err = NULL;
8802 	FILE *f = NULL;
8803 	struct stat sb;
8804 	size_t r;
8805 
8806 	*logmsg = NULL;
8807 	memset(&sb, 0, sizeof(sb));
8808 
8809 	f = fopen(path, "re");
8810 	if (f == NULL)
8811 		return got_error_from_errno2("fopen", path);
8812 
8813 	if (fstat(fileno(f), &sb) == -1) {
8814 		err = got_error_from_errno2("fstat", path);
8815 		goto done;
8816 	}
8817 	if (sb.st_size == 0) {
8818 		err = got_error(GOT_ERR_COMMIT_MSG_EMPTY);
8819 		goto done;
8820 	}
8821 
8822 	*logmsg = malloc(sb.st_size + 1);
8823 	if (*logmsg == NULL) {
8824 		err = got_error_from_errno("malloc");
8825 		goto done;
8826 	}
8827 
8828 	r = fread(*logmsg, 1, sb.st_size, f);
8829 	if (r != sb.st_size) {
8830 		if (ferror(f))
8831 			err = got_error_from_errno2("fread", path);
8832 		else
8833 			err = got_error(GOT_ERR_IO);
8834 		goto done;
8835 	}
8836 	(*logmsg)[sb.st_size] = '\0';
8837 done:
8838 	if (fclose(f) == EOF && err == NULL)
8839 		err = got_error_from_errno2("fclose", path);
8840 	if (err) {
8841 		free(*logmsg);
8842 		*logmsg = NULL;
8843 	}
8844 	return err;
8845 }
8846 
8847 static const struct got_error *
8848 collect_commit_logmsg(struct got_pathlist_head *commitable_paths,
8849     const char *diff_path, char **logmsg, void *arg)
8850 {
8851 	char *initial_content = NULL;
8852 	struct got_pathlist_entry *pe;
8853 	const struct got_error *err = NULL;
8854 	char *template = NULL;
8855 	char *prepared_msg = NULL, *merged_msg = NULL;
8856 	struct collect_commit_logmsg_arg *a = arg;
8857 	int initial_content_len;
8858 	int fd = -1;
8859 	size_t len;
8860 
8861 	/* if a message was specified on the command line, just use it */
8862 	if (a->cmdline_log != NULL && strlen(a->cmdline_log) != 0) {
8863 		len = strlen(a->cmdline_log) + 1;
8864 		*logmsg = malloc(len + 1);
8865 		if (*logmsg == NULL)
8866 			return got_error_from_errno("malloc");
8867 		strlcpy(*logmsg, a->cmdline_log, len);
8868 		return NULL;
8869 	} else if (a->prepared_log != NULL && a->non_interactive)
8870 		return read_prepared_logmsg(logmsg, a->prepared_log);
8871 
8872 	if (asprintf(&template, "%s/logmsg", a->worktree_path) == -1)
8873 		return got_error_from_errno("asprintf");
8874 
8875 	err = got_opentemp_named_fd(&a->logmsg_path, &fd, template, "");
8876 	if (err)
8877 		goto done;
8878 
8879 	if (a->prepared_log) {
8880 		err = read_prepared_logmsg(&prepared_msg, a->prepared_log);
8881 		if (err)
8882 			goto done;
8883 	} else if (a->merged_log) {
8884 		err = read_prepared_logmsg(&merged_msg, a->merged_log);
8885 		if (err)
8886 			goto done;
8887 	}
8888 
8889 	initial_content_len = asprintf(&initial_content,
8890 	    "%s%s\n# changes to be committed on branch %s:\n",
8891 	    prepared_msg ? prepared_msg : "",
8892 	    merged_msg ? merged_msg : "", a->branch_name);
8893 	if (initial_content_len == -1) {
8894 		err = got_error_from_errno("asprintf");
8895 		goto done;
8896 	}
8897 
8898 	if (write(fd, initial_content, initial_content_len) == -1) {
8899 		err = got_error_from_errno2("write", a->logmsg_path);
8900 		goto done;
8901 	}
8902 
8903 	TAILQ_FOREACH(pe, commitable_paths, entry) {
8904 		struct got_commitable *ct = pe->data;
8905 		dprintf(fd, "#  %c  %s\n",
8906 		    got_commitable_get_status(ct),
8907 		    got_commitable_get_path(ct));
8908 	}
8909 
8910 	if (diff_path) {
8911 		dprintf(fd, "# detailed changes can be viewed in %s\n",
8912 		    diff_path);
8913 	}
8914 
8915 	err = edit_logmsg(logmsg, a->editor, a->logmsg_path, initial_content,
8916 	    initial_content_len, a->prepared_log ? 0 : 1);
8917 done:
8918 	free(initial_content);
8919 	free(template);
8920 	free(prepared_msg);
8921 	free(merged_msg);
8922 
8923 	if (fd != -1 && close(fd) == -1 && err == NULL)
8924 		err = got_error_from_errno2("close", a->logmsg_path);
8925 
8926 	/* Editor is done; we can now apply unveil(2) */
8927 	if (err == NULL)
8928 		err = apply_unveil(a->repo_path, 0, a->worktree_path);
8929 	if (err) {
8930 		free(*logmsg);
8931 		*logmsg = NULL;
8932 	}
8933 	return err;
8934 }
8935 
8936 static const struct got_error *
8937 cat_logmsg(FILE *f, struct got_commit_object *commit, const char *idstr,
8938     const char *type, int has_content)
8939 {
8940 	const struct got_error	*err = NULL;
8941 	char			*logmsg = NULL;
8942 
8943 	err = got_object_commit_get_logmsg(&logmsg, commit);
8944 	if (err)
8945 		return err;
8946 
8947 	if (fprintf(f, "%s# log message of %s commit %s:%s",
8948 	    has_content ? "\n" : "", type, idstr, logmsg) < 0)
8949 		err = got_ferror(f, GOT_ERR_IO);
8950 
8951 	free(logmsg);
8952 	return err;
8953 }
8954 
8955 /*
8956  * Lookup "logmsg" references of backed-out and cherrypicked commits
8957  * belonging to the current work tree. If found, and the worktree has
8958  * at least one modified file that was changed in the referenced commit,
8959  * add its log message to a new temporary file at *logmsg_path.
8960  * Add all refs found to matched_refs to be scheduled for removal on
8961  * successful commit.
8962  */
8963 static const struct got_error *
8964 lookup_logmsg_ref(char **logmsg_path, struct got_pathlist_head *paths,
8965     struct got_reflist_head *matched_refs, struct got_worktree *worktree,
8966     struct got_repository *repo)
8967 {
8968 	const struct got_error		*err;
8969 	struct got_commit_object	*commit = NULL;
8970 	struct got_object_id		*id = NULL;
8971 	struct got_reflist_head		 refs;
8972 	struct got_reflist_entry	*re, *re_match;
8973 	FILE				*f = NULL;
8974 	char				*uuidstr = NULL;
8975 	int				 added_logmsg = 0;
8976 
8977 	TAILQ_INIT(&refs);
8978 
8979 	*logmsg_path = NULL;
8980 
8981 	err = got_worktree_get_uuid(&uuidstr, worktree);
8982 	if (err)
8983 		goto done;
8984 
8985 	err = got_ref_list(&refs, repo, "refs/got/worktree",
8986 	    got_ref_cmp_by_name, repo);
8987 	if (err)
8988 		goto done;
8989 
8990 	TAILQ_FOREACH(re, &refs, entry) {
8991 		const char			*refname, *type;
8992 		struct wt_commitable_path_arg	 wcpa;
8993 		int				 add_logmsg = 0;
8994 
8995 		refname = got_ref_get_name(re->ref);
8996 
8997 		if (strncmp(refname, GOT_WORKTREE_CHERRYPICK_REF_PREFIX,
8998 		    GOT_WORKTREE_CHERRYPICK_REF_PREFIX_LEN) == 0) {
8999 			refname += GOT_WORKTREE_CHERRYPICK_REF_PREFIX_LEN + 1;
9000 			type = "cherrypicked";
9001 		} else if (strncmp(refname, GOT_WORKTREE_BACKOUT_REF_PREFIX,
9002 		    GOT_WORKTREE_BACKOUT_REF_PREFIX_LEN) == 0) {
9003 			refname += GOT_WORKTREE_BACKOUT_REF_PREFIX_LEN + 1;
9004 			type = "backed-out";
9005 		} else
9006 			continue;
9007 
9008 		if (strncmp(refname, uuidstr, GOT_WORKTREE_UUID_STRLEN) == 0)
9009 			refname += GOT_WORKTREE_UUID_STRLEN + 1; /* skip '-' */
9010 		else
9011 			continue;
9012 
9013 		err = got_repo_match_object_id(&id, NULL, refname,
9014 		    GOT_OBJ_TYPE_COMMIT, NULL, repo);
9015 		if (err)
9016 			goto done;
9017 
9018 		err = got_object_open_as_commit(&commit, repo, id);
9019 		if (err)
9020 			goto done;
9021 
9022 		wcpa.commit_paths = paths;
9023 		wcpa.has_changes = &add_logmsg;
9024 
9025 		err = commit_path_changed_in_worktree(&wcpa, id,
9026 		    worktree, repo);
9027 		if (err)
9028 			goto done;
9029 
9030 		if (add_logmsg) {
9031 			if (f == NULL) {
9032 				err = got_opentemp_named(logmsg_path, &f,
9033 				    "got-commit-logmsg", "");
9034 				if (err)
9035 					goto done;
9036 			}
9037 			err = cat_logmsg(f, commit, refname, type,
9038 			    added_logmsg);
9039 			if (err)
9040 				goto done;
9041 			if (!added_logmsg)
9042 				++added_logmsg;
9043 
9044 			err = got_reflist_entry_dup(&re_match, re);
9045 			if (err)
9046 				goto done;
9047 			TAILQ_INSERT_HEAD(matched_refs, re_match, entry);
9048 		}
9049 
9050 		got_object_commit_close(commit);
9051 		commit = NULL;
9052 		free(id);
9053 		id = NULL;
9054 	}
9055 
9056 done:
9057 	free(id);
9058 	free(uuidstr);
9059 	got_ref_list_free(&refs);
9060 	if (commit)
9061 		got_object_commit_close(commit);
9062 	if (f && fclose(f) == EOF && err == NULL)
9063 		err = got_error_from_errno("fclose");
9064 	if (!added_logmsg) {
9065 		if (*logmsg_path && unlink(*logmsg_path) != 0 && err == NULL)
9066 			err = got_error_from_errno2("unlink", *logmsg_path);
9067 		*logmsg_path = NULL;
9068 	}
9069 	return err;
9070 }
9071 
9072 static const struct got_error *
9073 cmd_commit(int argc, char *argv[])
9074 {
9075 	const struct got_error *error = NULL;
9076 	struct got_worktree *worktree = NULL;
9077 	struct got_repository *repo = NULL;
9078 	char *cwd = NULL, *id_str = NULL;
9079 	struct got_object_id *id = NULL;
9080 	const char *logmsg = NULL;
9081 	char *prepared_logmsg = NULL, *merged_logmsg = NULL;
9082 	struct collect_commit_logmsg_arg cl_arg;
9083 	const char *author = NULL;
9084 	char *gitconfig_path = NULL, *editor = NULL, *committer = NULL;
9085 	int ch, rebase_in_progress, histedit_in_progress, preserve_logmsg = 0;
9086 	int allow_bad_symlinks = 0, non_interactive = 0, merge_in_progress = 0;
9087 	int show_diff = 1, commit_conflicts = 0;
9088 	struct got_pathlist_head paths;
9089 	struct got_reflist_head refs;
9090 	struct got_reflist_entry *re;
9091 	int *pack_fds = NULL;
9092 
9093 	TAILQ_INIT(&refs);
9094 	TAILQ_INIT(&paths);
9095 	cl_arg.logmsg_path = NULL;
9096 
9097 #ifndef PROFILE
9098 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
9099 	    "unveil", NULL) == -1)
9100 		err(1, "pledge");
9101 #endif
9102 
9103 	while ((ch = getopt(argc, argv, "A:CF:m:NnS")) != -1) {
9104 		switch (ch) {
9105 		case 'A':
9106 			author = optarg;
9107 			error = valid_author(author);
9108 			if (error)
9109 				return error;
9110 			break;
9111 		case 'C':
9112 			commit_conflicts = 1;
9113 			break;
9114 		case 'F':
9115 			if (logmsg != NULL)
9116 				option_conflict('F', 'm');
9117 			prepared_logmsg = realpath(optarg, NULL);
9118 			if (prepared_logmsg == NULL)
9119 				return got_error_from_errno2("realpath",
9120 				    optarg);
9121 			break;
9122 		case 'm':
9123 			if (prepared_logmsg)
9124 				option_conflict('m', 'F');
9125 			logmsg = optarg;
9126 			break;
9127 		case 'N':
9128 			non_interactive = 1;
9129 			break;
9130 		case 'n':
9131 			show_diff = 0;
9132 			break;
9133 		case 'S':
9134 			allow_bad_symlinks = 1;
9135 			break;
9136 		default:
9137 			usage_commit();
9138 			/* NOTREACHED */
9139 		}
9140 	}
9141 
9142 	argc -= optind;
9143 	argv += optind;
9144 
9145 	cwd = getcwd(NULL, 0);
9146 	if (cwd == NULL) {
9147 		error = got_error_from_errno("getcwd");
9148 		goto done;
9149 	}
9150 
9151 	error = got_repo_pack_fds_open(&pack_fds);
9152 	if (error != NULL)
9153 		goto done;
9154 
9155 	error = got_worktree_open(&worktree, cwd);
9156 	if (error) {
9157 		if (error->code == GOT_ERR_NOT_WORKTREE)
9158 			error = wrap_not_worktree_error(error, "commit", cwd);
9159 		goto done;
9160 	}
9161 
9162 	error = got_worktree_rebase_in_progress(&rebase_in_progress, worktree);
9163 	if (error)
9164 		goto done;
9165 	if (rebase_in_progress) {
9166 		error = got_error(GOT_ERR_REBASING);
9167 		goto done;
9168 	}
9169 
9170 	error = got_worktree_histedit_in_progress(&histedit_in_progress,
9171 	    worktree);
9172 	if (error)
9173 		goto done;
9174 
9175 	error = get_gitconfig_path(&gitconfig_path);
9176 	if (error)
9177 		goto done;
9178 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
9179 	    gitconfig_path, pack_fds);
9180 	if (error != NULL)
9181 		goto done;
9182 
9183 	error = got_worktree_merge_in_progress(&merge_in_progress, worktree, repo);
9184 	if (error)
9185 		goto done;
9186 	if (merge_in_progress) {
9187 		error = got_error(GOT_ERR_MERGE_BUSY);
9188 		goto done;
9189 	}
9190 
9191 	error = get_author(&committer, repo, worktree);
9192 	if (error)
9193 		goto done;
9194 
9195 	if (author == NULL)
9196 		author = committer;
9197 
9198 	/*
9199 	 * unveil(2) traverses exec(2); if an editor is used we have
9200 	 * to apply unveil after the log message has been written.
9201 	 */
9202 	if (logmsg == NULL || strlen(logmsg) == 0)
9203 		error = get_editor(&editor);
9204 	else
9205 		error = apply_unveil(got_repo_get_path(repo), 0,
9206 		    got_worktree_get_root_path(worktree));
9207 	if (error)
9208 		goto done;
9209 
9210 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
9211 	if (error)
9212 		goto done;
9213 
9214 	if (prepared_logmsg == NULL) {
9215 		error = lookup_logmsg_ref(&merged_logmsg,
9216 		    argc > 0 ? &paths : NULL, &refs, worktree, repo);
9217 		if (error)
9218 			goto done;
9219 	}
9220 
9221 	cl_arg.editor = editor;
9222 	cl_arg.cmdline_log = logmsg;
9223 	cl_arg.prepared_log = prepared_logmsg;
9224 	cl_arg.merged_log = merged_logmsg;
9225 	cl_arg.non_interactive = non_interactive;
9226 	cl_arg.worktree_path = got_worktree_get_root_path(worktree);
9227 	cl_arg.branch_name = got_worktree_get_head_ref_name(worktree);
9228 	if (!histedit_in_progress) {
9229 		if (strncmp(cl_arg.branch_name, "refs/heads/", 11) != 0) {
9230 			error = got_error(GOT_ERR_COMMIT_BRANCH);
9231 			goto done;
9232 		}
9233 		cl_arg.branch_name += 11;
9234 	}
9235 	cl_arg.repo_path = got_repo_get_path(repo);
9236 	error = got_worktree_commit(&id, worktree, &paths, author, committer,
9237 	    allow_bad_symlinks, show_diff, commit_conflicts,
9238 	    collect_commit_logmsg, &cl_arg, print_status, NULL, repo);
9239 	if (error) {
9240 		if (error->code != GOT_ERR_COMMIT_MSG_EMPTY &&
9241 		    cl_arg.logmsg_path != NULL)
9242 			preserve_logmsg = 1;
9243 		goto done;
9244 	}
9245 
9246 	error = got_object_id_str(&id_str, id);
9247 	if (error)
9248 		goto done;
9249 	printf("Created commit %s\n", id_str);
9250 
9251 	TAILQ_FOREACH(re, &refs, entry) {
9252 		error = got_ref_delete(re->ref, repo);
9253 		if (error)
9254 			goto done;
9255 	}
9256 
9257 done:
9258 	if (preserve_logmsg) {
9259 		fprintf(stderr, "%s: log message preserved in %s\n",
9260 		    getprogname(), cl_arg.logmsg_path);
9261 	} else if (cl_arg.logmsg_path && unlink(cl_arg.logmsg_path) == -1 &&
9262 	    error == NULL)
9263 		error = got_error_from_errno2("unlink", cl_arg.logmsg_path);
9264 	free(cl_arg.logmsg_path);
9265 	if (merged_logmsg && unlink(merged_logmsg) == -1 && error == NULL)
9266 		error = got_error_from_errno2("unlink", merged_logmsg);
9267 	free(merged_logmsg);
9268 	if (repo) {
9269 		const struct got_error *close_err = got_repo_close(repo);
9270 		if (error == NULL)
9271 			error = close_err;
9272 	}
9273 	if (worktree)
9274 		got_worktree_close(worktree);
9275 	if (pack_fds) {
9276 		const struct got_error *pack_err =
9277 		    got_repo_pack_fds_close(pack_fds);
9278 		if (error == NULL)
9279 			error = pack_err;
9280 	}
9281 	got_ref_list_free(&refs);
9282 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_PATH);
9283 	free(cwd);
9284 	free(id_str);
9285 	free(gitconfig_path);
9286 	free(editor);
9287 	free(committer);
9288 	free(prepared_logmsg);
9289 	return error;
9290 }
9291 
9292 __dead static void
9293 usage_send(void)
9294 {
9295 	fprintf(stderr, "usage: %s send [-afqTv] [-b branch] [-d branch] "
9296 	    "[-r repository-path] [-t tag] [remote-repository]\n",
9297 	    getprogname());
9298 	exit(1);
9299 }
9300 
9301 static void
9302 print_load_info(int print_colored, int print_found, int print_trees,
9303     int ncolored, int nfound, int ntrees)
9304 {
9305 	if (print_colored) {
9306 		printf("%d commit%s colored", ncolored,
9307 		    ncolored == 1 ? "" : "s");
9308 	}
9309 	if (print_found) {
9310 		printf("%s%d object%s found",
9311 		    ncolored > 0 ? "; " : "",
9312 		    nfound, nfound == 1 ? "" : "s");
9313 	}
9314 	if (print_trees) {
9315 		printf("; %d tree%s scanned", ntrees,
9316 		    ntrees == 1 ? "" : "s");
9317 	}
9318 }
9319 
9320 struct got_send_progress_arg {
9321 	char last_scaled_packsize[FMT_SCALED_STRSIZE];
9322 	int verbosity;
9323 	int last_ncolored;
9324 	int last_nfound;
9325 	int last_ntrees;
9326 	int loading_done;
9327 	int last_ncommits;
9328 	int last_nobj_total;
9329 	int last_p_deltify;
9330 	int last_p_written;
9331 	int last_p_sent;
9332 	int printed_something;
9333 	int sent_something;
9334 	struct got_pathlist_head *delete_branches;
9335 };
9336 
9337 static const struct got_error *
9338 send_progress(void *arg, int ncolored, int nfound, int ntrees,
9339     off_t packfile_size, int ncommits, int nobj_total, int nobj_deltify,
9340     int nobj_written, off_t bytes_sent, const char *refname,
9341     const char *errmsg, int success)
9342 {
9343 	struct got_send_progress_arg *a = arg;
9344 	char scaled_packsize[FMT_SCALED_STRSIZE];
9345 	char scaled_sent[FMT_SCALED_STRSIZE];
9346 	int p_deltify = 0, p_written = 0, p_sent = 0;
9347 	int print_colored = 0, print_found = 0, print_trees = 0;
9348 	int print_searching = 0, print_total = 0;
9349 	int print_deltify = 0, print_written = 0, print_sent = 0;
9350 
9351 	if (a->verbosity < 0)
9352 		return NULL;
9353 
9354 	if (refname) {
9355 		const char *status = success ? "accepted" : "rejected";
9356 
9357 		if (success) {
9358 			struct got_pathlist_entry *pe;
9359 			TAILQ_FOREACH(pe, a->delete_branches, entry) {
9360 				const char *branchname = pe->path;
9361 				if (got_path_cmp(branchname, refname,
9362 				    strlen(branchname), strlen(refname)) == 0) {
9363 					status = "deleted";
9364 					a->sent_something = 1;
9365 					break;
9366 				}
9367 			}
9368 		}
9369 
9370 		if (a->printed_something)
9371 			putchar('\n');
9372 		printf("Server has %s %s", status, refname);
9373 		if (errmsg)
9374 			printf(": %s", errmsg);
9375 		a->printed_something = 1;
9376 		return NULL;
9377 	}
9378 
9379 	if (a->last_ncolored != ncolored) {
9380 		print_colored = 1;
9381 		a->last_ncolored = ncolored;
9382 	}
9383 
9384 	if (a->last_nfound != nfound) {
9385 		print_colored = 1;
9386 		print_found = 1;
9387 		a->last_nfound = nfound;
9388 	}
9389 
9390 	if (a->last_ntrees != ntrees) {
9391 		print_colored = 1;
9392 		print_found = 1;
9393 		print_trees = 1;
9394 		a->last_ntrees = ntrees;
9395 	}
9396 
9397 	if ((print_colored || print_found || print_trees) &&
9398 	    !a->loading_done) {
9399 		printf("\r");
9400 		print_load_info(print_colored, print_found, print_trees,
9401 		    ncolored, nfound, ntrees);
9402 		a->printed_something = 1;
9403 		fflush(stdout);
9404 		return NULL;
9405 	} else if (!a->loading_done) {
9406 		printf("\r");
9407 		print_load_info(1, 1, 1, ncolored, nfound, ntrees);
9408 		printf("\n");
9409 		a->loading_done = 1;
9410 	}
9411 
9412 	if (fmt_scaled(packfile_size, scaled_packsize) == -1)
9413 		return got_error_from_errno("fmt_scaled");
9414 	if (fmt_scaled(bytes_sent, scaled_sent) == -1)
9415 		return got_error_from_errno("fmt_scaled");
9416 
9417 	if (a->last_ncommits != ncommits) {
9418 		print_searching = 1;
9419 		a->last_ncommits = ncommits;
9420 	}
9421 
9422 	if (a->last_nobj_total != nobj_total) {
9423 		print_searching = 1;
9424 		print_total = 1;
9425 		a->last_nobj_total = nobj_total;
9426 	}
9427 
9428 	if (packfile_size > 0 && (a->last_scaled_packsize[0] == '\0' ||
9429 	    strcmp(scaled_packsize, a->last_scaled_packsize)) != 0) {
9430 		if (strlcpy(a->last_scaled_packsize, scaled_packsize,
9431 		    FMT_SCALED_STRSIZE) >= FMT_SCALED_STRSIZE)
9432 			return got_error(GOT_ERR_NO_SPACE);
9433 	}
9434 
9435 	if (nobj_deltify > 0 || nobj_written > 0) {
9436 		if (nobj_deltify > 0) {
9437 			p_deltify = (nobj_deltify * 100) / nobj_total;
9438 			if (p_deltify != a->last_p_deltify) {
9439 				a->last_p_deltify = p_deltify;
9440 				print_searching = 1;
9441 				print_total = 1;
9442 				print_deltify = 1;
9443 			}
9444 		}
9445 		if (nobj_written > 0) {
9446 			p_written = (nobj_written * 100) / nobj_total;
9447 			if (p_written != a->last_p_written) {
9448 				a->last_p_written = p_written;
9449 				print_searching = 1;
9450 				print_total = 1;
9451 				print_deltify = 1;
9452 				print_written = 1;
9453 			}
9454 		}
9455 	}
9456 
9457 	if (bytes_sent > 0) {
9458 		p_sent = (bytes_sent * 100) / packfile_size;
9459 		if (p_sent != a->last_p_sent) {
9460 			a->last_p_sent = p_sent;
9461 			print_searching = 1;
9462 			print_total = 1;
9463 			print_deltify = 1;
9464 			print_written = 1;
9465 			print_sent = 1;
9466 		}
9467 		a->sent_something = 1;
9468 	}
9469 
9470 	if (print_searching || print_total || print_deltify || print_written ||
9471 	    print_sent)
9472 		printf("\r");
9473 	if (print_searching)
9474 		printf("packing %d reference%s", ncommits,
9475 		    ncommits == 1 ? "" : "s");
9476 	if (print_total)
9477 		printf("; %d object%s", nobj_total,
9478 		    nobj_total == 1 ? "" : "s");
9479 	if (print_deltify)
9480 		printf("; deltify: %d%%", p_deltify);
9481 	if (print_sent)
9482 		printf("; uploading pack: %*s %d%%", FMT_SCALED_STRSIZE - 2,
9483 		    scaled_packsize, p_sent);
9484 	else if (print_written)
9485 		printf("; writing pack: %*s %d%%", FMT_SCALED_STRSIZE - 2,
9486 		    scaled_packsize, p_written);
9487 	if (print_searching || print_total || print_deltify ||
9488 	    print_written || print_sent) {
9489 		a->printed_something = 1;
9490 		fflush(stdout);
9491 	}
9492 	return NULL;
9493 }
9494 
9495 static const struct got_error *
9496 cmd_send(int argc, char *argv[])
9497 {
9498 	const struct got_error *error = NULL;
9499 	char *cwd = NULL, *repo_path = NULL;
9500 	const char *remote_name;
9501 	char *proto = NULL, *host = NULL, *port = NULL;
9502 	char *repo_name = NULL, *server_path = NULL;
9503 	const struct got_remote_repo *remotes, *remote = NULL;
9504 	int nremotes, nbranches = 0, ndelete_branches = 0;
9505 	struct got_repository *repo = NULL;
9506 	struct got_worktree *worktree = NULL;
9507 	const struct got_gotconfig *repo_conf = NULL, *worktree_conf = NULL;
9508 	struct got_pathlist_head branches;
9509 	struct got_pathlist_head tags;
9510 	struct got_reflist_head all_branches;
9511 	struct got_reflist_head all_tags;
9512 	struct got_pathlist_head delete_args;
9513 	struct got_pathlist_head delete_branches;
9514 	struct got_reflist_entry *re;
9515 	struct got_pathlist_entry *pe;
9516 	int i, ch, sendfd = -1, sendstatus;
9517 	pid_t sendpid = -1;
9518 	struct got_send_progress_arg spa;
9519 	int verbosity = 0, overwrite_refs = 0;
9520 	int send_all_branches = 0, send_all_tags = 0;
9521 	struct got_reference *ref = NULL;
9522 	int *pack_fds = NULL;
9523 
9524 	TAILQ_INIT(&branches);
9525 	TAILQ_INIT(&tags);
9526 	TAILQ_INIT(&all_branches);
9527 	TAILQ_INIT(&all_tags);
9528 	TAILQ_INIT(&delete_args);
9529 	TAILQ_INIT(&delete_branches);
9530 
9531 	while ((ch = getopt(argc, argv, "ab:d:fqr:Tt:v")) != -1) {
9532 		switch (ch) {
9533 		case 'a':
9534 			send_all_branches = 1;
9535 			break;
9536 		case 'b':
9537 			error = got_pathlist_append(&branches, optarg, NULL);
9538 			if (error)
9539 				return error;
9540 			nbranches++;
9541 			break;
9542 		case 'd':
9543 			error = got_pathlist_append(&delete_args, optarg, NULL);
9544 			if (error)
9545 				return error;
9546 			break;
9547 		case 'f':
9548 			overwrite_refs = 1;
9549 			break;
9550 		case 'q':
9551 			verbosity = -1;
9552 			break;
9553 		case 'r':
9554 			repo_path = realpath(optarg, NULL);
9555 			if (repo_path == NULL)
9556 				return got_error_from_errno2("realpath",
9557 				    optarg);
9558 			got_path_strip_trailing_slashes(repo_path);
9559 			break;
9560 		case 'T':
9561 			send_all_tags = 1;
9562 			break;
9563 		case 't':
9564 			error = got_pathlist_append(&tags, optarg, NULL);
9565 			if (error)
9566 				return error;
9567 			break;
9568 		case 'v':
9569 			if (verbosity < 0)
9570 				verbosity = 0;
9571 			else if (verbosity < 3)
9572 				verbosity++;
9573 			break;
9574 		default:
9575 			usage_send();
9576 			/* NOTREACHED */
9577 		}
9578 	}
9579 	argc -= optind;
9580 	argv += optind;
9581 
9582 	if (send_all_branches && !TAILQ_EMPTY(&branches))
9583 		option_conflict('a', 'b');
9584 	if (send_all_tags && !TAILQ_EMPTY(&tags))
9585 		option_conflict('T', 't');
9586 
9587 
9588 	if (argc == 0)
9589 		remote_name = GOT_SEND_DEFAULT_REMOTE_NAME;
9590 	else if (argc == 1)
9591 		remote_name = argv[0];
9592 	else
9593 		usage_send();
9594 
9595 	cwd = getcwd(NULL, 0);
9596 	if (cwd == NULL) {
9597 		error = got_error_from_errno("getcwd");
9598 		goto done;
9599 	}
9600 
9601 	error = got_repo_pack_fds_open(&pack_fds);
9602 	if (error != NULL)
9603 		goto done;
9604 
9605 	if (repo_path == NULL) {
9606 		error = got_worktree_open(&worktree, cwd);
9607 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
9608 			goto done;
9609 		else
9610 			error = NULL;
9611 		if (worktree) {
9612 			repo_path =
9613 			    strdup(got_worktree_get_repo_path(worktree));
9614 			if (repo_path == NULL)
9615 				error = got_error_from_errno("strdup");
9616 			if (error)
9617 				goto done;
9618 		} else {
9619 			repo_path = strdup(cwd);
9620 			if (repo_path == NULL) {
9621 				error = got_error_from_errno("strdup");
9622 				goto done;
9623 			}
9624 		}
9625 	}
9626 
9627 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
9628 	if (error)
9629 		goto done;
9630 
9631 	if (worktree) {
9632 		worktree_conf = got_worktree_get_gotconfig(worktree);
9633 		if (worktree_conf) {
9634 			got_gotconfig_get_remotes(&nremotes, &remotes,
9635 			    worktree_conf);
9636 			for (i = 0; i < nremotes; i++) {
9637 				if (strcmp(remotes[i].name, remote_name) == 0) {
9638 					remote = &remotes[i];
9639 					break;
9640 				}
9641 			}
9642 		}
9643 	}
9644 	if (remote == NULL) {
9645 		repo_conf = got_repo_get_gotconfig(repo);
9646 		if (repo_conf) {
9647 			got_gotconfig_get_remotes(&nremotes, &remotes,
9648 			    repo_conf);
9649 			for (i = 0; i < nremotes; i++) {
9650 				if (strcmp(remotes[i].name, remote_name) == 0) {
9651 					remote = &remotes[i];
9652 					break;
9653 				}
9654 			}
9655 		}
9656 	}
9657 	if (remote == NULL) {
9658 		got_repo_get_gitconfig_remotes(&nremotes, &remotes, repo);
9659 		for (i = 0; i < nremotes; i++) {
9660 			if (strcmp(remotes[i].name, remote_name) == 0) {
9661 				remote = &remotes[i];
9662 				break;
9663 			}
9664 		}
9665 	}
9666 	if (remote == NULL) {
9667 		error = got_error_path(remote_name, GOT_ERR_NO_REMOTE);
9668 		goto done;
9669 	}
9670 
9671 	error = got_dial_parse_uri(&proto, &host, &port, &server_path,
9672 	    &repo_name, remote->send_url);
9673 	if (error)
9674 		goto done;
9675 
9676 	if (strcmp(proto, "git") == 0) {
9677 #ifndef PROFILE
9678 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
9679 		    "sendfd dns inet unveil", NULL) == -1)
9680 			err(1, "pledge");
9681 #endif
9682 	} else if (strcmp(proto, "git+ssh") == 0 ||
9683 	    strcmp(proto, "ssh") == 0) {
9684 #ifndef PROFILE
9685 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
9686 		    "sendfd unveil", NULL) == -1)
9687 			err(1, "pledge");
9688 #endif
9689 	} else if (strcmp(proto, "http") == 0 ||
9690 	    strcmp(proto, "git+http") == 0) {
9691 		error = got_error_path(proto, GOT_ERR_NOT_IMPL);
9692 		goto done;
9693 	} else {
9694 		error = got_error_path(proto, GOT_ERR_BAD_PROTO);
9695 		goto done;
9696 	}
9697 
9698 	error = got_dial_apply_unveil(proto);
9699 	if (error)
9700 		goto done;
9701 
9702 	error = apply_unveil(got_repo_get_path(repo), 0, NULL);
9703 	if (error)
9704 		goto done;
9705 
9706 	if (send_all_branches) {
9707 		error = got_ref_list(&all_branches, repo, "refs/heads",
9708 		    got_ref_cmp_by_name, NULL);
9709 		if (error)
9710 			goto done;
9711 		TAILQ_FOREACH(re, &all_branches, entry) {
9712 			const char *branchname = got_ref_get_name(re->ref);
9713 			error = got_pathlist_append(&branches,
9714 			    branchname, NULL);
9715 			if (error)
9716 				goto done;
9717 			nbranches++;
9718 		}
9719 	} else if (nbranches == 0) {
9720 		for (i = 0; i < remote->nsend_branches; i++) {
9721 			error = got_pathlist_append(&branches,
9722 			    remote->send_branches[i], NULL);
9723 			if (error)
9724 				goto done;
9725 		}
9726 	}
9727 
9728 	if (send_all_tags) {
9729 		error = got_ref_list(&all_tags, repo, "refs/tags",
9730 		    got_ref_cmp_by_name, NULL);
9731 		if (error)
9732 			goto done;
9733 		TAILQ_FOREACH(re, &all_tags, entry) {
9734 			const char *tagname = got_ref_get_name(re->ref);
9735 			error = got_pathlist_append(&tags,
9736 			    tagname, NULL);
9737 			if (error)
9738 				goto done;
9739 		}
9740 	}
9741 
9742 	/*
9743 	 * To prevent accidents only branches in refs/heads/ can be deleted
9744 	 * with 'got send -d'.
9745 	 * Deleting anything else requires local repository access or Git.
9746 	 */
9747 	TAILQ_FOREACH(pe, &delete_args, entry) {
9748 		const char *branchname = pe->path;
9749 		char *s;
9750 		struct got_pathlist_entry *new;
9751 		if (strncmp(branchname, "refs/heads/", 11) == 0) {
9752 			s = strdup(branchname);
9753 			if (s == NULL) {
9754 				error = got_error_from_errno("strdup");
9755 				goto done;
9756 			}
9757 		} else {
9758 			if (asprintf(&s, "refs/heads/%s", branchname) == -1) {
9759 				error = got_error_from_errno("asprintf");
9760 				goto done;
9761 			}
9762 		}
9763 		error = got_pathlist_insert(&new, &delete_branches, s, NULL);
9764 		if (error || new == NULL /* duplicate */)
9765 			free(s);
9766 		if (error)
9767 			goto done;
9768 		ndelete_branches++;
9769 	}
9770 
9771 	if (nbranches == 0 && ndelete_branches == 0) {
9772 		struct got_reference *head_ref;
9773 		if (worktree)
9774 			error = got_ref_open(&head_ref, repo,
9775 			    got_worktree_get_head_ref_name(worktree), 0);
9776 		else
9777 			error = got_ref_open(&head_ref, repo, GOT_REF_HEAD, 0);
9778 		if (error)
9779 			goto done;
9780 		if (got_ref_is_symbolic(head_ref)) {
9781 			error = got_ref_resolve_symbolic(&ref, repo, head_ref);
9782 			got_ref_close(head_ref);
9783 			if (error)
9784 				goto done;
9785 		} else
9786 			ref = head_ref;
9787 		error = got_pathlist_append(&branches, got_ref_get_name(ref),
9788 		    NULL);
9789 		if (error)
9790 			goto done;
9791 		nbranches++;
9792 	}
9793 
9794 	if (verbosity >= 0) {
9795 		printf("Connecting to \"%s\" %s://%s%s%s%s%s\n",
9796 		    remote->name, proto, host,
9797 		    port ? ":" : "", port ? port : "",
9798 		    *server_path == '/' ? "" : "/", server_path);
9799 	}
9800 
9801 	error = got_send_connect(&sendpid, &sendfd, proto, host, port,
9802 	    server_path, verbosity);
9803 	if (error)
9804 		goto done;
9805 
9806 	memset(&spa, 0, sizeof(spa));
9807 	spa.last_scaled_packsize[0] = '\0';
9808 	spa.last_p_deltify = -1;
9809 	spa.last_p_written = -1;
9810 	spa.verbosity = verbosity;
9811 	spa.delete_branches = &delete_branches;
9812 	error = got_send_pack(remote_name, &branches, &tags, &delete_branches,
9813 	    verbosity, overwrite_refs, sendfd, repo, send_progress, &spa,
9814 	    check_cancelled, NULL);
9815 	if (spa.printed_something)
9816 		putchar('\n');
9817 	if (error)
9818 		goto done;
9819 	if (!spa.sent_something && verbosity >= 0)
9820 		printf("Already up-to-date\n");
9821 done:
9822 	if (sendpid > 0) {
9823 		if (kill(sendpid, SIGTERM) == -1)
9824 			error = got_error_from_errno("kill");
9825 		if (waitpid(sendpid, &sendstatus, 0) == -1 && error == NULL)
9826 			error = got_error_from_errno("waitpid");
9827 	}
9828 	if (sendfd != -1 && close(sendfd) == -1 && error == NULL)
9829 		error = got_error_from_errno("close");
9830 	if (repo) {
9831 		const struct got_error *close_err = got_repo_close(repo);
9832 		if (error == NULL)
9833 			error = close_err;
9834 	}
9835 	if (worktree)
9836 		got_worktree_close(worktree);
9837 	if (pack_fds) {
9838 		const struct got_error *pack_err =
9839 		    got_repo_pack_fds_close(pack_fds);
9840 		if (error == NULL)
9841 			error = pack_err;
9842 	}
9843 	if (ref)
9844 		got_ref_close(ref);
9845 	got_pathlist_free(&branches, GOT_PATHLIST_FREE_NONE);
9846 	got_pathlist_free(&tags, GOT_PATHLIST_FREE_NONE);
9847 	got_ref_list_free(&all_branches);
9848 	got_ref_list_free(&all_tags);
9849 	got_pathlist_free(&delete_args, GOT_PATHLIST_FREE_NONE);
9850 	got_pathlist_free(&delete_branches, GOT_PATHLIST_FREE_PATH);
9851 	free(cwd);
9852 	free(repo_path);
9853 	free(proto);
9854 	free(host);
9855 	free(port);
9856 	free(server_path);
9857 	free(repo_name);
9858 	return error;
9859 }
9860 
9861 /*
9862  * Print and if delete is set delete all ref_prefix references.
9863  * If wanted_ref is not NULL, only print or delete this reference.
9864  */
9865 static const struct got_error *
9866 process_logmsg_refs(const char *ref_prefix, size_t prefix_len,
9867     const char *wanted_ref, int delete, struct got_worktree *worktree,
9868     struct got_repository *repo)
9869 {
9870 	const struct got_error			*err;
9871 	struct got_pathlist_head		 paths;
9872 	struct got_reflist_head			 refs;
9873 	struct got_reflist_entry		*re;
9874 	struct got_reflist_object_id_map	*refs_idmap = NULL;
9875 	struct got_commit_object		*commit = NULL;
9876 	struct got_object_id			*id = NULL;
9877 	const char				*header_prefix;
9878 	char					*uuidstr = NULL;
9879 	int					 found = 0;
9880 
9881 	TAILQ_INIT(&refs);
9882 	TAILQ_INIT(&paths);
9883 
9884 	err = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name, repo);
9885 	if (err)
9886 		goto done;
9887 
9888 	err = got_reflist_object_id_map_create(&refs_idmap, &refs, repo);
9889 	if (err)
9890 		goto done;
9891 
9892 	if (worktree != NULL) {
9893 		err = got_worktree_get_uuid(&uuidstr, worktree);
9894 		if (err)
9895 			goto done;
9896 	}
9897 
9898 	if (wanted_ref) {
9899 		if (strncmp(wanted_ref, "refs/heads/", 11) == 0)
9900 			wanted_ref += 11;
9901 	}
9902 
9903 	if (strcmp(ref_prefix, GOT_WORKTREE_BACKOUT_REF_PREFIX) == 0)
9904 		header_prefix = "backout";
9905 	else
9906 		header_prefix = "cherrypick";
9907 
9908 	TAILQ_FOREACH(re, &refs, entry) {
9909 		const char *refname, *wt;
9910 
9911 		refname = got_ref_get_name(re->ref);
9912 
9913 		err = check_cancelled(NULL);
9914 		if (err)
9915 			goto done;
9916 
9917 		if (strncmp(refname, ref_prefix, prefix_len) == 0)
9918 			refname += prefix_len + 1;  /* skip '-' delimiter */
9919 		else
9920 			continue;
9921 
9922 		wt = refname;
9923 
9924 		if (worktree == NULL || strncmp(refname, uuidstr,
9925 		    GOT_WORKTREE_UUID_STRLEN) == 0)
9926 			refname += GOT_WORKTREE_UUID_STRLEN + 1; /* skip '-' */
9927 		else
9928 			continue;
9929 
9930 		err = got_repo_match_object_id(&id, NULL, refname,
9931 		    GOT_OBJ_TYPE_COMMIT, NULL, repo);
9932 		if (err)
9933 			goto done;
9934 
9935 		err = got_object_open_as_commit(&commit, repo, id);
9936 		if (err)
9937 			goto done;
9938 
9939 		if (wanted_ref)
9940 			found = strncmp(wanted_ref, refname,
9941 			    strlen(wanted_ref)) == 0;
9942 		if (wanted_ref && !found) {
9943 			struct got_reflist_head	*ci_refs;
9944 
9945 			ci_refs = got_reflist_object_id_map_lookup(refs_idmap,
9946 			    id);
9947 
9948 			if (ci_refs) {
9949 				char		*refs_str = NULL;
9950 				char const	*r = NULL;
9951 
9952 				err = build_refs_str(&refs_str, ci_refs, id,
9953 				    repo, 1);
9954 				if (err)
9955 					goto done;
9956 
9957 				r = refs_str;
9958 				while (r) {
9959 					if (strncmp(r, wanted_ref,
9960 					    strlen(wanted_ref)) == 0) {
9961 						found = 1;
9962 						break;
9963 					}
9964 					r = strchr(r, ' ');
9965 					if (r)
9966 						++r;
9967 				}
9968 				free(refs_str);
9969 			}
9970 		}
9971 
9972 		if (wanted_ref == NULL || found) {
9973 			if (delete) {
9974 				err = got_ref_delete(re->ref, repo);
9975 				if (err)
9976 					goto done;
9977 				printf("Deleted: ");
9978 				err = print_commit_oneline(commit, id, repo,
9979 				    refs_idmap);
9980 			} else {
9981 				/*
9982 				 * Print paths modified by commit to help
9983 				 * associate commits with worktree changes.
9984 				 */
9985 				err = get_changed_paths(&paths, commit,
9986 				    repo, NULL);
9987 				if (err)
9988 					goto done;
9989 
9990 				err = print_commit(commit, id, repo, NULL,
9991 				    &paths, NULL, 0, 0, refs_idmap, NULL,
9992 				    header_prefix);
9993 				got_pathlist_free(&paths,
9994 				    GOT_PATHLIST_FREE_ALL);
9995 
9996 				if (worktree == NULL)
9997 					printf("work tree: %.*s\n\n",
9998 					    GOT_WORKTREE_UUID_STRLEN, wt);
9999 			}
10000 			if (err || found)
10001 				goto done;
10002 		}
10003 
10004 		got_object_commit_close(commit);
10005 		commit = NULL;
10006 		free(id);
10007 		id = NULL;
10008 	}
10009 
10010 	if (wanted_ref != NULL && !found)
10011 		err = got_error_fmt(GOT_ERR_NOT_REF, "%s", wanted_ref);
10012 
10013 done:
10014 	free(id);
10015 	free(uuidstr);
10016 	got_ref_list_free(&refs);
10017 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_ALL);
10018 	if (refs_idmap)
10019 		got_reflist_object_id_map_free(refs_idmap);
10020 	if (commit)
10021 		got_object_commit_close(commit);
10022 	return err;
10023 }
10024 
10025 /*
10026  * Create new temp "logmsg" ref of the backed-out or cherrypicked commit
10027  * identified by id for log messages to prepopulate the editor on commit.
10028  */
10029 static const struct got_error *
10030 logmsg_ref(struct got_object_id *id, const char *prefix,
10031     struct got_worktree *worktree, struct got_repository *repo)
10032 {
10033 	const struct got_error	*err = NULL;
10034 	char			*idstr, *ref = NULL, *refname = NULL;
10035 	int			 histedit_in_progress;
10036 	int			 rebase_in_progress, merge_in_progress;
10037 
10038 	/*
10039 	 * Silenty refuse to create merge reference if any histedit, merge,
10040 	 * or rebase operation is in progress.
10041 	 */
10042 	err = got_worktree_histedit_in_progress(&histedit_in_progress,
10043 	    worktree);
10044 	if (err)
10045 		return err;
10046 	if (histedit_in_progress)
10047 		return NULL;
10048 
10049 	err = got_worktree_rebase_in_progress(&rebase_in_progress, worktree);
10050 	if (err)
10051 		return err;
10052 	if (rebase_in_progress)
10053 		return NULL;
10054 
10055 	err = got_worktree_merge_in_progress(&merge_in_progress, worktree,
10056 	    repo);
10057 	if (err)
10058 		return err;
10059 	if (merge_in_progress)
10060 		return NULL;
10061 
10062 	err = got_object_id_str(&idstr, id);
10063 	if (err)
10064 		return err;
10065 
10066 	err = got_worktree_get_logmsg_ref_name(&refname, worktree, prefix);
10067 	if (err)
10068 		goto done;
10069 
10070 	if (asprintf(&ref, "%s-%s", refname, idstr) == -1) {
10071 		err = got_error_from_errno("asprintf");
10072 		goto done;
10073 	}
10074 
10075 	err = create_ref(ref, got_worktree_get_base_commit_id(worktree),
10076 	    -1, repo);
10077 done:
10078 	free(ref);
10079 	free(idstr);
10080 	free(refname);
10081 	return err;
10082 }
10083 
10084 __dead static void
10085 usage_cherrypick(void)
10086 {
10087 	fprintf(stderr, "usage: %s cherrypick [-lX] [commit-id]\n",
10088 	    getprogname());
10089 	exit(1);
10090 }
10091 
10092 static const struct got_error *
10093 cmd_cherrypick(int argc, char *argv[])
10094 {
10095 	const struct got_error *error = NULL;
10096 	struct got_worktree *worktree = NULL;
10097 	struct got_repository *repo = NULL;
10098 	char *cwd = NULL, *commit_id_str = NULL;
10099 	struct got_object_id *commit_id = NULL;
10100 	struct got_commit_object *commit = NULL;
10101 	struct got_object_qid *pid;
10102 	int ch, list_refs = 0, remove_refs = 0;
10103 	struct got_update_progress_arg upa;
10104 	int *pack_fds = NULL;
10105 
10106 #ifndef PROFILE
10107 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
10108 	    "unveil", NULL) == -1)
10109 		err(1, "pledge");
10110 #endif
10111 
10112 	while ((ch = getopt(argc, argv, "lX")) != -1) {
10113 		switch (ch) {
10114 		case 'l':
10115 			list_refs = 1;
10116 			break;
10117 		case 'X':
10118 			remove_refs = 1;
10119 			break;
10120 		default:
10121 			usage_cherrypick();
10122 			/* NOTREACHED */
10123 		}
10124 	}
10125 
10126 	argc -= optind;
10127 	argv += optind;
10128 
10129 	if (list_refs || remove_refs) {
10130 		if (argc != 0 && argc != 1)
10131 			usage_cherrypick();
10132 	} else if (argc != 1)
10133 		usage_cherrypick();
10134 	if (list_refs && remove_refs)
10135 		option_conflict('l', 'X');
10136 
10137 	cwd = getcwd(NULL, 0);
10138 	if (cwd == NULL) {
10139 		error = got_error_from_errno("getcwd");
10140 		goto done;
10141 	}
10142 
10143 	error = got_repo_pack_fds_open(&pack_fds);
10144 	if (error != NULL)
10145 		goto done;
10146 
10147 	error = got_worktree_open(&worktree, cwd);
10148 	if (error) {
10149 		if (list_refs || remove_refs) {
10150 			if (error->code != GOT_ERR_NOT_WORKTREE)
10151 				goto done;
10152 		} else {
10153 			if (error->code == GOT_ERR_NOT_WORKTREE)
10154 				error = wrap_not_worktree_error(error,
10155 				    "cherrypick", cwd);
10156 			goto done;
10157 		}
10158 	}
10159 
10160 	error = got_repo_open(&repo,
10161 	    worktree ? got_worktree_get_repo_path(worktree) : cwd,
10162 	    NULL, pack_fds);
10163 	if (error != NULL)
10164 		goto done;
10165 
10166 	error = apply_unveil(got_repo_get_path(repo), 0,
10167 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
10168 	if (error)
10169 		goto done;
10170 
10171 	if (list_refs || remove_refs) {
10172 		error = process_logmsg_refs(GOT_WORKTREE_CHERRYPICK_REF_PREFIX,
10173 		    GOT_WORKTREE_CHERRYPICK_REF_PREFIX_LEN,
10174 		    argc == 1 ? argv[0] : NULL, remove_refs, worktree, repo);
10175 		goto done;
10176 	}
10177 
10178 	error = got_repo_match_object_id(&commit_id, NULL, argv[0],
10179 	    GOT_OBJ_TYPE_COMMIT, NULL, repo);
10180 	if (error)
10181 		goto done;
10182 	error = got_object_id_str(&commit_id_str, commit_id);
10183 	if (error)
10184 		goto done;
10185 
10186 	error = got_object_open_as_commit(&commit, repo, commit_id);
10187 	if (error)
10188 		goto done;
10189 	pid = STAILQ_FIRST(got_object_commit_get_parent_ids(commit));
10190 	memset(&upa, 0, sizeof(upa));
10191 	error = got_worktree_merge_files(worktree, pid ? &pid->id : NULL,
10192 	    commit_id, repo, update_progress, &upa, check_cancelled,
10193 	    NULL);
10194 	if (error != NULL)
10195 		goto done;
10196 
10197 	if (upa.did_something) {
10198 		error = logmsg_ref(commit_id,
10199 		    GOT_WORKTREE_CHERRYPICK_REF_PREFIX, worktree, repo);
10200 		if (error)
10201 			goto done;
10202 		printf("Merged commit %s\n", commit_id_str);
10203 	}
10204 	print_merge_progress_stats(&upa);
10205 done:
10206 	free(cwd);
10207 	if (commit)
10208 		got_object_commit_close(commit);
10209 	free(commit_id_str);
10210 	if (worktree)
10211 		got_worktree_close(worktree);
10212 	if (repo) {
10213 		const struct got_error *close_err = got_repo_close(repo);
10214 		if (error == NULL)
10215 			error = close_err;
10216 	}
10217 	if (pack_fds) {
10218 		const struct got_error *pack_err =
10219 		    got_repo_pack_fds_close(pack_fds);
10220 		if (error == NULL)
10221 			error = pack_err;
10222 	}
10223 
10224 	return error;
10225 }
10226 
10227 __dead static void
10228 usage_backout(void)
10229 {
10230 	fprintf(stderr, "usage: %s backout [-lX] [commit-id]\n", getprogname());
10231 	exit(1);
10232 }
10233 
10234 static const struct got_error *
10235 cmd_backout(int argc, char *argv[])
10236 {
10237 	const struct got_error *error = NULL;
10238 	struct got_worktree *worktree = NULL;
10239 	struct got_repository *repo = NULL;
10240 	char *cwd = NULL, *commit_id_str = NULL;
10241 	struct got_object_id *commit_id = NULL;
10242 	struct got_commit_object *commit = NULL;
10243 	struct got_object_qid *pid;
10244 	int ch, list_refs = 0, remove_refs = 0;
10245 	struct got_update_progress_arg upa;
10246 	int *pack_fds = NULL;
10247 
10248 #ifndef PROFILE
10249 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
10250 	    "unveil", NULL) == -1)
10251 		err(1, "pledge");
10252 #endif
10253 
10254 	while ((ch = getopt(argc, argv, "lX")) != -1) {
10255 		switch (ch) {
10256 		case 'l':
10257 			list_refs = 1;
10258 			break;
10259 		case 'X':
10260 			remove_refs = 1;
10261 			break;
10262 		default:
10263 			usage_backout();
10264 			/* NOTREACHED */
10265 		}
10266 	}
10267 
10268 	argc -= optind;
10269 	argv += optind;
10270 
10271 	if (list_refs || remove_refs) {
10272 		if (argc != 0 && argc != 1)
10273 			usage_backout();
10274 	} else if (argc != 1)
10275 		usage_backout();
10276 	if (list_refs && remove_refs)
10277 		option_conflict('l', 'X');
10278 
10279 	cwd = getcwd(NULL, 0);
10280 	if (cwd == NULL) {
10281 		error = got_error_from_errno("getcwd");
10282 		goto done;
10283 	}
10284 
10285 	error = got_repo_pack_fds_open(&pack_fds);
10286 	if (error != NULL)
10287 		goto done;
10288 
10289 	error = got_worktree_open(&worktree, cwd);
10290 	if (error) {
10291 		if (list_refs || remove_refs) {
10292 			if (error->code != GOT_ERR_NOT_WORKTREE)
10293 				goto done;
10294 		} else {
10295 			if (error->code == GOT_ERR_NOT_WORKTREE)
10296 				error = wrap_not_worktree_error(error,
10297 				    "backout", cwd);
10298 			goto done;
10299 		}
10300 	}
10301 
10302 	error = got_repo_open(&repo,
10303 	    worktree ? got_worktree_get_repo_path(worktree) : cwd,
10304 	    NULL, pack_fds);
10305 	if (error != NULL)
10306 		goto done;
10307 
10308 	error = apply_unveil(got_repo_get_path(repo), 0,
10309 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
10310 	if (error)
10311 		goto done;
10312 
10313 	if (list_refs || remove_refs) {
10314 		error = process_logmsg_refs(GOT_WORKTREE_BACKOUT_REF_PREFIX,
10315 		    GOT_WORKTREE_BACKOUT_REF_PREFIX_LEN,
10316 		    argc == 1 ? argv[0] : NULL, remove_refs, worktree, repo);
10317 		goto done;
10318 	}
10319 
10320 	error = got_repo_match_object_id(&commit_id, NULL, argv[0],
10321 	    GOT_OBJ_TYPE_COMMIT, NULL, repo);
10322 	if (error)
10323 		goto done;
10324 	error = got_object_id_str(&commit_id_str, commit_id);
10325 	if (error)
10326 		goto done;
10327 
10328 	error = got_object_open_as_commit(&commit, repo, commit_id);
10329 	if (error)
10330 		goto done;
10331 	pid = STAILQ_FIRST(got_object_commit_get_parent_ids(commit));
10332 	if (pid == NULL) {
10333 		error = got_error(GOT_ERR_ROOT_COMMIT);
10334 		goto done;
10335 	}
10336 
10337 	memset(&upa, 0, sizeof(upa));
10338 	error = got_worktree_merge_files(worktree, commit_id, &pid->id,
10339 	    repo, update_progress, &upa, check_cancelled, NULL);
10340 	if (error != NULL)
10341 		goto done;
10342 
10343 	if (upa.did_something) {
10344 		error = logmsg_ref(commit_id, GOT_WORKTREE_BACKOUT_REF_PREFIX,
10345 		    worktree, repo);
10346 		if (error)
10347 			goto done;
10348 		printf("Backed out commit %s\n", commit_id_str);
10349 	}
10350 	print_merge_progress_stats(&upa);
10351 done:
10352 	free(cwd);
10353 	if (commit)
10354 		got_object_commit_close(commit);
10355 	free(commit_id_str);
10356 	if (worktree)
10357 		got_worktree_close(worktree);
10358 	if (repo) {
10359 		const struct got_error *close_err = got_repo_close(repo);
10360 		if (error == NULL)
10361 			error = close_err;
10362 	}
10363 	if (pack_fds) {
10364 		const struct got_error *pack_err =
10365 		    got_repo_pack_fds_close(pack_fds);
10366 		if (error == NULL)
10367 			error = pack_err;
10368 	}
10369 	return error;
10370 }
10371 
10372 __dead static void
10373 usage_rebase(void)
10374 {
10375 	fprintf(stderr, "usage: %s rebase [-aCclX] [branch]\n", getprogname());
10376 	exit(1);
10377 }
10378 
10379 static void
10380 trim_logmsg(char *logmsg, int limit)
10381 {
10382 	char *nl;
10383 	size_t len;
10384 
10385 	len = strlen(logmsg);
10386 	if (len > limit)
10387 		len = limit;
10388 	logmsg[len] = '\0';
10389 	nl = strchr(logmsg, '\n');
10390 	if (nl)
10391 		*nl = '\0';
10392 }
10393 
10394 static const struct got_error *
10395 get_short_logmsg(char **logmsg, int limit, struct got_commit_object *commit)
10396 {
10397 	const struct got_error *err;
10398 	char *logmsg0 = NULL;
10399 	const char *s;
10400 
10401 	err = got_object_commit_get_logmsg(&logmsg0, commit);
10402 	if (err)
10403 		return err;
10404 
10405 	s = logmsg0;
10406 	while (isspace((unsigned char)s[0]))
10407 		s++;
10408 
10409 	*logmsg = strdup(s);
10410 	if (*logmsg == NULL) {
10411 		err = got_error_from_errno("strdup");
10412 		goto done;
10413 	}
10414 
10415 	trim_logmsg(*logmsg, limit);
10416 done:
10417 	free(logmsg0);
10418 	return err;
10419 }
10420 
10421 static const struct got_error *
10422 show_rebase_merge_conflict(struct got_object_id *id,
10423     struct got_repository *repo)
10424 {
10425 	const struct got_error *err;
10426 	struct got_commit_object *commit = NULL;
10427 	char *id_str = NULL, *logmsg = NULL;
10428 
10429 	err = got_object_open_as_commit(&commit, repo, id);
10430 	if (err)
10431 		return err;
10432 
10433 	err = got_object_id_str(&id_str, id);
10434 	if (err)
10435 		goto done;
10436 
10437 	id_str[12] = '\0';
10438 
10439 	err = get_short_logmsg(&logmsg, 42, commit);
10440 	if (err)
10441 		goto done;
10442 
10443 	printf("%s -> merge conflict: %s\n", id_str, logmsg);
10444 done:
10445 	free(id_str);
10446 	got_object_commit_close(commit);
10447 	free(logmsg);
10448 	return err;
10449 }
10450 
10451 static const struct got_error *
10452 show_rebase_progress(struct got_commit_object *commit,
10453     struct got_object_id *old_id, struct got_object_id *new_id)
10454 {
10455 	const struct got_error *err;
10456 	char *old_id_str = NULL, *new_id_str = NULL, *logmsg = NULL;
10457 
10458 	err = got_object_id_str(&old_id_str, old_id);
10459 	if (err)
10460 		goto done;
10461 
10462 	if (new_id) {
10463 		err = got_object_id_str(&new_id_str, new_id);
10464 		if (err)
10465 			goto done;
10466 	}
10467 
10468 	old_id_str[12] = '\0';
10469 	if (new_id_str)
10470 		new_id_str[12] = '\0';
10471 
10472 	err = get_short_logmsg(&logmsg, 42, commit);
10473 	if (err)
10474 		goto done;
10475 
10476 	printf("%s -> %s: %s\n", old_id_str,
10477 	    new_id_str ? new_id_str : "no-op change", logmsg);
10478 done:
10479 	free(old_id_str);
10480 	free(new_id_str);
10481 	free(logmsg);
10482 	return err;
10483 }
10484 
10485 static const struct got_error *
10486 rebase_complete(struct got_worktree *worktree, struct got_fileindex *fileindex,
10487     struct got_reference *branch, struct got_reference *tmp_branch,
10488     struct got_repository *repo, int create_backup)
10489 {
10490 	printf("Switching work tree to %s\n", got_ref_get_name(branch));
10491 	return got_worktree_rebase_complete(worktree, fileindex,
10492 	    tmp_branch, branch, repo, create_backup);
10493 }
10494 
10495 static const struct got_error *
10496 rebase_commit(struct got_pathlist_head *merged_paths,
10497     struct got_worktree *worktree, struct got_fileindex *fileindex,
10498     struct got_reference *tmp_branch, const char *committer,
10499     struct got_object_id *commit_id, int allow_conflict,
10500     struct got_repository *repo)
10501 {
10502 	const struct got_error *error;
10503 	struct got_commit_object *commit;
10504 	struct got_object_id *new_commit_id;
10505 
10506 	error = got_object_open_as_commit(&commit, repo, commit_id);
10507 	if (error)
10508 		return error;
10509 
10510 	error = got_worktree_rebase_commit(&new_commit_id, merged_paths,
10511 	    worktree, fileindex, tmp_branch, committer, commit, commit_id,
10512 	    allow_conflict, repo);
10513 	if (error) {
10514 		if (error->code != GOT_ERR_COMMIT_NO_CHANGES)
10515 			goto done;
10516 		error = show_rebase_progress(commit, commit_id, NULL);
10517 	} else {
10518 		error = show_rebase_progress(commit, commit_id, new_commit_id);
10519 		free(new_commit_id);
10520 	}
10521 done:
10522 	got_object_commit_close(commit);
10523 	return error;
10524 }
10525 
10526 struct check_path_prefix_arg {
10527 	const char *path_prefix;
10528 	size_t len;
10529 	int errcode;
10530 };
10531 
10532 static const struct got_error *
10533 check_path_prefix_in_diff(void *arg, struct got_blob_object *blob1,
10534     struct got_blob_object *blob2, FILE *f1, FILE *f2,
10535     struct got_object_id *id1, struct got_object_id *id2,
10536     const char *path1, const char *path2,
10537     mode_t mode1, mode_t mode2, struct got_repository *repo)
10538 {
10539 	struct check_path_prefix_arg *a = arg;
10540 
10541 	if ((path1 && !got_path_is_child(path1, a->path_prefix, a->len)) ||
10542 	    (path2 && !got_path_is_child(path2, a->path_prefix, a->len)))
10543 		return got_error(a->errcode);
10544 
10545 	return NULL;
10546 }
10547 
10548 static const struct got_error *
10549 check_path_prefix(struct got_object_id *parent_id,
10550     struct got_object_id *commit_id, const char *path_prefix,
10551     int errcode, struct got_repository *repo)
10552 {
10553 	const struct got_error *err;
10554 	struct got_tree_object *tree1 = NULL, *tree2 = NULL;
10555 	struct got_commit_object *commit = NULL, *parent_commit = NULL;
10556 	struct check_path_prefix_arg cpp_arg;
10557 
10558 	if (got_path_is_root_dir(path_prefix))
10559 		return NULL;
10560 
10561 	err = got_object_open_as_commit(&commit, repo, commit_id);
10562 	if (err)
10563 		goto done;
10564 
10565 	err = got_object_open_as_commit(&parent_commit, repo, parent_id);
10566 	if (err)
10567 		goto done;
10568 
10569 	err = got_object_open_as_tree(&tree1, repo,
10570 	    got_object_commit_get_tree_id(parent_commit));
10571 	if (err)
10572 		goto done;
10573 
10574 	err = got_object_open_as_tree(&tree2, repo,
10575 	    got_object_commit_get_tree_id(commit));
10576 	if (err)
10577 		goto done;
10578 
10579 	cpp_arg.path_prefix = path_prefix;
10580 	while (cpp_arg.path_prefix[0] == '/')
10581 		cpp_arg.path_prefix++;
10582 	cpp_arg.len = strlen(cpp_arg.path_prefix);
10583 	cpp_arg.errcode = errcode;
10584 	err = got_diff_tree(tree1, tree2, NULL, NULL, -1, -1, "", "", repo,
10585 	    check_path_prefix_in_diff, &cpp_arg, 0);
10586 done:
10587 	if (tree1)
10588 		got_object_tree_close(tree1);
10589 	if (tree2)
10590 		got_object_tree_close(tree2);
10591 	if (commit)
10592 		got_object_commit_close(commit);
10593 	if (parent_commit)
10594 		got_object_commit_close(parent_commit);
10595 	return err;
10596 }
10597 
10598 static const struct got_error *
10599 collect_commits(struct got_object_id_queue *commits,
10600     struct got_object_id *initial_commit_id,
10601     struct got_object_id *iter_start_id, struct got_object_id *iter_stop_id,
10602     const char *path_prefix, int path_prefix_errcode,
10603     struct got_repository *repo)
10604 {
10605 	const struct got_error *err = NULL;
10606 	struct got_commit_graph *graph = NULL;
10607 	struct got_object_id parent_id, commit_id;
10608 	struct got_object_qid *qid;
10609 
10610 	err = got_commit_graph_open(&graph, "/", 1);
10611 	if (err)
10612 		return err;
10613 
10614 	err = got_commit_graph_iter_start(graph, iter_start_id, repo,
10615 	    check_cancelled, NULL);
10616 	if (err)
10617 		goto done;
10618 
10619 	memcpy(&commit_id, initial_commit_id, sizeof(commit_id));
10620 	while (got_object_id_cmp(&commit_id, iter_stop_id) != 0) {
10621 		err = got_commit_graph_iter_next(&parent_id, graph, repo,
10622 		    check_cancelled, NULL);
10623 		if (err) {
10624 			if (err->code == GOT_ERR_ITER_COMPLETED) {
10625 				err = got_error_msg(GOT_ERR_ANCESTRY,
10626 				    "ran out of commits to rebase before "
10627 				    "youngest common ancestor commit has "
10628 				    "been reached?!?");
10629 			}
10630 			goto done;
10631 		} else {
10632 			err = check_path_prefix(&parent_id, &commit_id,
10633 			    path_prefix, path_prefix_errcode, repo);
10634 			if (err)
10635 				goto done;
10636 
10637 			err = got_object_qid_alloc(&qid, &commit_id);
10638 			if (err)
10639 				goto done;
10640 			STAILQ_INSERT_HEAD(commits, qid, entry);
10641 
10642 			memcpy(&commit_id, &parent_id, sizeof(commit_id));
10643 		}
10644 	}
10645 done:
10646 	got_commit_graph_close(graph);
10647 	return err;
10648 }
10649 
10650 static const struct got_error *
10651 get_commit_brief_str(char **brief_str, struct got_commit_object *commit)
10652 {
10653 	const struct got_error *err = NULL;
10654 	time_t committer_time;
10655 	struct tm tm;
10656 	char datebuf[11]; /* YYYY-MM-DD + NUL */
10657 	char *author0 = NULL, *author, *smallerthan;
10658 	char *logmsg0 = NULL, *logmsg, *newline;
10659 
10660 	committer_time = got_object_commit_get_committer_time(commit);
10661 	if (gmtime_r(&committer_time, &tm) == NULL)
10662 		return got_error_from_errno("gmtime_r");
10663 	if (strftime(datebuf, sizeof(datebuf), "%G-%m-%d", &tm) == 0)
10664 		return got_error(GOT_ERR_NO_SPACE);
10665 
10666 	author0 = strdup(got_object_commit_get_author(commit));
10667 	if (author0 == NULL)
10668 		return got_error_from_errno("strdup");
10669 	author = author0;
10670 	smallerthan = strchr(author, '<');
10671 	if (smallerthan && smallerthan[1] != '\0')
10672 		author = smallerthan + 1;
10673 	author[strcspn(author, "@>")] = '\0';
10674 
10675 	err = got_object_commit_get_logmsg(&logmsg0, commit);
10676 	if (err)
10677 		goto done;
10678 	logmsg = logmsg0;
10679 	while (*logmsg == '\n')
10680 		logmsg++;
10681 	newline = strchr(logmsg, '\n');
10682 	if (newline)
10683 		*newline = '\0';
10684 
10685 	if (asprintf(brief_str, "%s %s  %s",
10686 	    datebuf, author, logmsg) == -1)
10687 		err = got_error_from_errno("asprintf");
10688 done:
10689 	free(author0);
10690 	free(logmsg0);
10691 	return err;
10692 }
10693 
10694 static const struct got_error *
10695 delete_backup_ref(struct got_reference *ref, struct got_object_id *id,
10696     struct got_repository *repo)
10697 {
10698 	const struct got_error *err;
10699 	char *id_str;
10700 
10701 	err = got_object_id_str(&id_str, id);
10702 	if (err)
10703 		return err;
10704 
10705 	err = got_ref_delete(ref, repo);
10706 	if (err)
10707 		goto done;
10708 
10709 	printf("Deleted %s: %s\n", got_ref_get_name(ref), id_str);
10710 done:
10711 	free(id_str);
10712 	return err;
10713 }
10714 
10715 static const struct got_error *
10716 print_backup_ref(const char *branch_name, const char *new_id_str,
10717     struct got_object_id *old_commit_id, struct got_commit_object *old_commit,
10718     struct got_reflist_object_id_map *refs_idmap,
10719     struct got_repository *repo)
10720 {
10721 	const struct got_error *err = NULL;
10722 	struct got_reflist_head *refs;
10723 	char *refs_str = NULL;
10724 	struct got_object_id *new_commit_id = NULL;
10725 	struct got_commit_object *new_commit = NULL;
10726 	char *new_commit_brief_str = NULL;
10727 	struct got_object_id *yca_id = NULL;
10728 	struct got_commit_object *yca_commit = NULL;
10729 	char *yca_id_str = NULL, *yca_brief_str = NULL;
10730 	char *custom_refs_str;
10731 
10732 	if (asprintf(&custom_refs_str, "formerly %s", branch_name) == -1)
10733 		return got_error_from_errno("asprintf");
10734 
10735 	err = print_commit(old_commit, old_commit_id, repo, NULL, NULL, NULL,
10736 	    0, 0, refs_idmap, custom_refs_str, NULL);
10737 	if (err)
10738 		goto done;
10739 
10740 	err = got_object_resolve_id_str(&new_commit_id, repo, new_id_str);
10741 	if (err)
10742 		goto done;
10743 
10744 	refs = got_reflist_object_id_map_lookup(refs_idmap, new_commit_id);
10745 	if (refs) {
10746 		err = build_refs_str(&refs_str, refs, new_commit_id, repo, 0);
10747 		if (err)
10748 			goto done;
10749 	}
10750 
10751 	err = got_object_open_as_commit(&new_commit, repo, new_commit_id);
10752 	if (err)
10753 		goto done;
10754 
10755 	err = get_commit_brief_str(&new_commit_brief_str, new_commit);
10756 	if (err)
10757 		goto done;
10758 
10759 	err = got_commit_graph_find_youngest_common_ancestor(&yca_id,
10760 	    old_commit_id, new_commit_id, 1, repo, check_cancelled, NULL);
10761 	if (err)
10762 		goto done;
10763 
10764 	printf("has become commit %s%s%s%s\n %s\n", new_id_str,
10765 	    refs_str ? " (" : "", refs_str ? refs_str : "",
10766 	    refs_str ? ")" : "", new_commit_brief_str);
10767 	if (yca_id && got_object_id_cmp(yca_id, new_commit_id) != 0 &&
10768 	    got_object_id_cmp(yca_id, old_commit_id) != 0) {
10769 		free(refs_str);
10770 		refs_str = NULL;
10771 
10772 		err = got_object_open_as_commit(&yca_commit, repo, yca_id);
10773 		if (err)
10774 			goto done;
10775 
10776 		err = get_commit_brief_str(&yca_brief_str, yca_commit);
10777 		if (err)
10778 			goto done;
10779 
10780 		err = got_object_id_str(&yca_id_str, yca_id);
10781 		if (err)
10782 			goto done;
10783 
10784 		refs = got_reflist_object_id_map_lookup(refs_idmap, yca_id);
10785 		if (refs) {
10786 			err = build_refs_str(&refs_str, refs, yca_id, repo, 0);
10787 			if (err)
10788 				goto done;
10789 		}
10790 		printf("history forked at %s%s%s%s\n %s\n",
10791 		    yca_id_str,
10792 		    refs_str ? " (" : "", refs_str ? refs_str : "",
10793 		    refs_str ? ")" : "", yca_brief_str);
10794 	}
10795 done:
10796 	free(custom_refs_str);
10797 	free(new_commit_id);
10798 	free(refs_str);
10799 	free(yca_id);
10800 	free(yca_id_str);
10801 	free(yca_brief_str);
10802 	if (new_commit)
10803 		got_object_commit_close(new_commit);
10804 	if (yca_commit)
10805 		got_object_commit_close(yca_commit);
10806 
10807 	return err;
10808 }
10809 
10810 static const struct got_error *
10811 worktree_has_logmsg_ref(const char *caller, struct got_worktree *worktree,
10812     struct got_repository *repo)
10813 {
10814 	const struct got_error		*err;
10815 	struct got_reflist_head		 refs;
10816 	struct got_reflist_entry	*re;
10817 	char				*uuidstr = NULL;
10818 	static char			 msg[160];
10819 
10820 	TAILQ_INIT(&refs);
10821 
10822 	err = got_worktree_get_uuid(&uuidstr, worktree);
10823 	if (err)
10824 		goto done;
10825 
10826 	err = got_ref_list(&refs, repo, "refs/got/worktree",
10827 	    got_ref_cmp_by_name, repo);
10828 	if (err)
10829 		goto done;
10830 
10831 	TAILQ_FOREACH(re, &refs, entry) {
10832 		const char *cmd, *refname, *type;
10833 
10834 		refname = got_ref_get_name(re->ref);
10835 
10836 		if (strncmp(refname, GOT_WORKTREE_CHERRYPICK_REF_PREFIX,
10837 		    GOT_WORKTREE_CHERRYPICK_REF_PREFIX_LEN) == 0) {
10838 			refname += GOT_WORKTREE_CHERRYPICK_REF_PREFIX_LEN + 1;
10839 			cmd = "cherrypick";
10840 			type = "cherrypicked";
10841 		} else if (strncmp(refname, GOT_WORKTREE_BACKOUT_REF_PREFIX,
10842 		    GOT_WORKTREE_BACKOUT_REF_PREFIX_LEN) == 0) {
10843 			refname += GOT_WORKTREE_BACKOUT_REF_PREFIX_LEN + 1;
10844 			cmd = "backout";
10845 			type = "backed-out";
10846 		} else
10847 			continue;
10848 
10849 		if (strncmp(refname, uuidstr, GOT_WORKTREE_UUID_STRLEN) != 0)
10850 			continue;
10851 
10852 		snprintf(msg, sizeof(msg),
10853 		    "work tree has references created by %s commits which "
10854 		    "must be removed with 'got %s -X' before running the %s "
10855 		    "command", type, cmd, caller);
10856 		err = got_error_msg(GOT_ERR_WORKTREE_META, msg);
10857 		goto done;
10858 	}
10859 
10860 done:
10861 	free(uuidstr);
10862 	got_ref_list_free(&refs);
10863 	return err;
10864 }
10865 
10866 static const struct got_error *
10867 process_backup_refs(const char *backup_ref_prefix,
10868     const char *wanted_branch_name,
10869     int delete, struct got_repository *repo)
10870 {
10871 	const struct got_error *err;
10872 	struct got_reflist_head refs, backup_refs;
10873 	struct got_reflist_entry *re;
10874 	const size_t backup_ref_prefix_len = strlen(backup_ref_prefix);
10875 	struct got_object_id *old_commit_id = NULL;
10876 	char *branch_name = NULL;
10877 	struct got_commit_object *old_commit = NULL;
10878 	struct got_reflist_object_id_map *refs_idmap = NULL;
10879 	int wanted_branch_found = 0;
10880 
10881 	TAILQ_INIT(&refs);
10882 	TAILQ_INIT(&backup_refs);
10883 
10884 	err = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name, NULL);
10885 	if (err)
10886 		return err;
10887 
10888 	err = got_reflist_object_id_map_create(&refs_idmap, &refs, repo);
10889 	if (err)
10890 		goto done;
10891 
10892 	if (wanted_branch_name) {
10893 		if (strncmp(wanted_branch_name, "refs/heads/", 11) == 0)
10894 			wanted_branch_name += 11;
10895 	}
10896 
10897 	err = got_ref_list(&backup_refs, repo, backup_ref_prefix,
10898 	    got_ref_cmp_by_commit_timestamp_descending, repo);
10899 	if (err)
10900 		goto done;
10901 
10902 	TAILQ_FOREACH(re, &backup_refs, entry) {
10903 		const char *refname = got_ref_get_name(re->ref);
10904 		char *slash;
10905 
10906 		err = check_cancelled(NULL);
10907 		if (err)
10908 			break;
10909 
10910 		err = got_ref_resolve(&old_commit_id, repo, re->ref);
10911 		if (err)
10912 			break;
10913 
10914 		err = got_object_open_as_commit(&old_commit, repo,
10915 		    old_commit_id);
10916 		if (err)
10917 			break;
10918 
10919 		if (strncmp(backup_ref_prefix, refname,
10920 		    backup_ref_prefix_len) == 0)
10921 			refname += backup_ref_prefix_len;
10922 
10923 		while (refname[0] == '/')
10924 			refname++;
10925 
10926 		branch_name = strdup(refname);
10927 		if (branch_name == NULL) {
10928 			err = got_error_from_errno("strdup");
10929 			break;
10930 		}
10931 		slash = strrchr(branch_name, '/');
10932 		if (slash) {
10933 			*slash = '\0';
10934 			refname += strlen(branch_name) + 1;
10935 		}
10936 
10937 		if (wanted_branch_name == NULL ||
10938 		    strcmp(wanted_branch_name, branch_name) == 0) {
10939 			wanted_branch_found = 1;
10940 			if (delete) {
10941 				err = delete_backup_ref(re->ref,
10942 				    old_commit_id, repo);
10943 			} else {
10944 				err = print_backup_ref(branch_name, refname,
10945 				    old_commit_id, old_commit, refs_idmap,
10946 				    repo);
10947 			}
10948 			if (err)
10949 				break;
10950 		}
10951 
10952 		free(old_commit_id);
10953 		old_commit_id = NULL;
10954 		free(branch_name);
10955 		branch_name = NULL;
10956 		got_object_commit_close(old_commit);
10957 		old_commit = NULL;
10958 	}
10959 
10960 	if (wanted_branch_name && !wanted_branch_found) {
10961 		err = got_error_fmt(GOT_ERR_NOT_REF,
10962 		    "%s/%s/", backup_ref_prefix, wanted_branch_name);
10963 	}
10964 done:
10965 	if (refs_idmap)
10966 		got_reflist_object_id_map_free(refs_idmap);
10967 	got_ref_list_free(&refs);
10968 	got_ref_list_free(&backup_refs);
10969 	free(old_commit_id);
10970 	free(branch_name);
10971 	if (old_commit)
10972 		got_object_commit_close(old_commit);
10973 	return err;
10974 }
10975 
10976 static const struct got_error *
10977 abort_progress(void *arg, unsigned char status, const char *path)
10978 {
10979 	/*
10980 	 * Unversioned files should not clutter progress output when
10981 	 * an operation is aborted.
10982 	 */
10983 	if (status == GOT_STATUS_UNVERSIONED)
10984 		return NULL;
10985 
10986 	return update_progress(arg, status, path);
10987 }
10988 
10989 static const struct got_error *
10990 cmd_rebase(int argc, char *argv[])
10991 {
10992 	const struct got_error *error = NULL;
10993 	struct got_worktree *worktree = NULL;
10994 	struct got_repository *repo = NULL;
10995 	struct got_fileindex *fileindex = NULL;
10996 	char *cwd = NULL, *committer = NULL, *gitconfig_path = NULL;
10997 	struct got_reference *branch = NULL;
10998 	struct got_reference *new_base_branch = NULL, *tmp_branch = NULL;
10999 	struct got_object_id *commit_id = NULL, *parent_id = NULL;
11000 	struct got_object_id *resume_commit_id = NULL;
11001 	struct got_object_id *branch_head_commit_id = NULL, *yca_id = NULL;
11002 	struct got_object_id *head_commit_id = NULL;
11003 	struct got_reference *head_ref = NULL;
11004 	struct got_commit_object *commit = NULL;
11005 	int ch, rebase_in_progress = 0, abort_rebase = 0, continue_rebase = 0;
11006 	int histedit_in_progress = 0, merge_in_progress = 0;
11007 	int create_backup = 1, list_backups = 0, delete_backups = 0;
11008 	int allow_conflict = 0;
11009 	struct got_object_id_queue commits;
11010 	struct got_pathlist_head merged_paths;
11011 	const struct got_object_id_queue *parent_ids;
11012 	struct got_object_qid *qid, *pid;
11013 	struct got_update_progress_arg upa;
11014 	int *pack_fds = NULL;
11015 
11016 	STAILQ_INIT(&commits);
11017 	TAILQ_INIT(&merged_paths);
11018 	memset(&upa, 0, sizeof(upa));
11019 
11020 #ifndef PROFILE
11021 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
11022 	    "unveil", NULL) == -1)
11023 		err(1, "pledge");
11024 #endif
11025 
11026 	while ((ch = getopt(argc, argv, "aCclX")) != -1) {
11027 		switch (ch) {
11028 		case 'a':
11029 			abort_rebase = 1;
11030 			break;
11031 		case 'C':
11032 			allow_conflict = 1;
11033 			break;
11034 		case 'c':
11035 			continue_rebase = 1;
11036 			break;
11037 		case 'l':
11038 			list_backups = 1;
11039 			break;
11040 		case 'X':
11041 			delete_backups = 1;
11042 			break;
11043 		default:
11044 			usage_rebase();
11045 			/* NOTREACHED */
11046 		}
11047 	}
11048 
11049 	argc -= optind;
11050 	argv += optind;
11051 
11052 	if (list_backups) {
11053 		if (abort_rebase)
11054 			option_conflict('l', 'a');
11055 		if (allow_conflict)
11056 			option_conflict('l', 'C');
11057 		if (continue_rebase)
11058 			option_conflict('l', 'c');
11059 		if (delete_backups)
11060 			option_conflict('l', 'X');
11061 		if (argc != 0 && argc != 1)
11062 			usage_rebase();
11063 	} else if (delete_backups) {
11064 		if (abort_rebase)
11065 			option_conflict('X', 'a');
11066 		if (allow_conflict)
11067 			option_conflict('X', 'C');
11068 		if (continue_rebase)
11069 			option_conflict('X', 'c');
11070 		if (list_backups)
11071 			option_conflict('l', 'X');
11072 		if (argc != 0 && argc != 1)
11073 			usage_rebase();
11074 	} else if (allow_conflict) {
11075 		if (abort_rebase)
11076 			option_conflict('C', 'a');
11077 		if (!continue_rebase)
11078 			errx(1, "-C option requires -c");
11079 	} else {
11080 		if (abort_rebase && continue_rebase)
11081 			usage_rebase();
11082 		else if (abort_rebase || continue_rebase) {
11083 			if (argc != 0)
11084 				usage_rebase();
11085 		} else if (argc != 1)
11086 			usage_rebase();
11087 	}
11088 
11089 	cwd = getcwd(NULL, 0);
11090 	if (cwd == NULL) {
11091 		error = got_error_from_errno("getcwd");
11092 		goto done;
11093 	}
11094 
11095 	error = got_repo_pack_fds_open(&pack_fds);
11096 	if (error != NULL)
11097 		goto done;
11098 
11099 	error = got_worktree_open(&worktree, cwd);
11100 	if (error) {
11101 		if (list_backups || delete_backups) {
11102 			if (error->code != GOT_ERR_NOT_WORKTREE)
11103 				goto done;
11104 		} else {
11105 			if (error->code == GOT_ERR_NOT_WORKTREE)
11106 				error = wrap_not_worktree_error(error,
11107 				    "rebase", cwd);
11108 			goto done;
11109 		}
11110 	}
11111 
11112 	error = get_gitconfig_path(&gitconfig_path);
11113 	if (error)
11114 		goto done;
11115 	error = got_repo_open(&repo,
11116 	    worktree ? got_worktree_get_repo_path(worktree) : cwd,
11117 	    gitconfig_path, pack_fds);
11118 	if (error != NULL)
11119 		goto done;
11120 
11121 	if (worktree != NULL && !list_backups && !delete_backups) {
11122 		error = worktree_has_logmsg_ref("rebase", worktree, repo);
11123 		if (error)
11124 			goto done;
11125 	}
11126 
11127 	error = get_author(&committer, repo, worktree);
11128 	if (error && error->code != GOT_ERR_COMMIT_NO_AUTHOR)
11129 		goto done;
11130 
11131 	error = apply_unveil(got_repo_get_path(repo), 0,
11132 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
11133 	if (error)
11134 		goto done;
11135 
11136 	if (list_backups || delete_backups) {
11137 		error = process_backup_refs(
11138 		    GOT_WORKTREE_REBASE_BACKUP_REF_PREFIX,
11139 		    argc == 1 ? argv[0] : NULL, delete_backups, repo);
11140 		goto done; /* nothing else to do */
11141 	}
11142 
11143 	error = got_worktree_histedit_in_progress(&histedit_in_progress,
11144 	    worktree);
11145 	if (error)
11146 		goto done;
11147 	if (histedit_in_progress) {
11148 		error = got_error(GOT_ERR_HISTEDIT_BUSY);
11149 		goto done;
11150 	}
11151 
11152 	error = got_worktree_merge_in_progress(&merge_in_progress,
11153 	    worktree, repo);
11154 	if (error)
11155 		goto done;
11156 	if (merge_in_progress) {
11157 		error = got_error(GOT_ERR_MERGE_BUSY);
11158 		goto done;
11159 	}
11160 
11161 	error = got_worktree_rebase_in_progress(&rebase_in_progress, worktree);
11162 	if (error)
11163 		goto done;
11164 
11165 	if (abort_rebase) {
11166 		if (!rebase_in_progress) {
11167 			error = got_error(GOT_ERR_NOT_REBASING);
11168 			goto done;
11169 		}
11170 		error = got_worktree_rebase_continue(&resume_commit_id,
11171 		    &new_base_branch, &tmp_branch, &branch, &fileindex,
11172 		    worktree, repo);
11173 		if (error)
11174 			goto done;
11175 		printf("Switching work tree to %s\n",
11176 		    got_ref_get_symref_target(new_base_branch));
11177 		error = got_worktree_rebase_abort(worktree, fileindex, repo,
11178 		    new_base_branch, abort_progress, &upa);
11179 		if (error)
11180 			goto done;
11181 		printf("Rebase of %s aborted\n", got_ref_get_name(branch));
11182 		print_merge_progress_stats(&upa);
11183 		goto done; /* nothing else to do */
11184 	}
11185 
11186 	if (continue_rebase) {
11187 		if (!rebase_in_progress) {
11188 			error = got_error(GOT_ERR_NOT_REBASING);
11189 			goto done;
11190 		}
11191 		error = got_worktree_rebase_continue(&resume_commit_id,
11192 		    &new_base_branch, &tmp_branch, &branch, &fileindex,
11193 		    worktree, repo);
11194 		if (error)
11195 			goto done;
11196 
11197 		error = rebase_commit(NULL, worktree, fileindex, tmp_branch,
11198 		    committer, resume_commit_id, allow_conflict, repo);
11199 		if (error)
11200 			goto done;
11201 
11202 		yca_id = got_object_id_dup(resume_commit_id);
11203 		if (yca_id == NULL) {
11204 			error = got_error_from_errno("got_object_id_dup");
11205 			goto done;
11206 		}
11207 	} else {
11208 		error = got_ref_open(&branch, repo, argv[0], 0);
11209 		if (error != NULL)
11210 			goto done;
11211 		if (strncmp(got_ref_get_name(branch), "refs/heads/", 11) != 0) {
11212 			error = got_error_msg(GOT_ERR_COMMIT_BRANCH,
11213 			    "will not rebase a branch which lives outside "
11214 			    "the \"refs/heads/\" reference namespace");
11215 			goto done;
11216 		}
11217 	}
11218 
11219 	error = got_ref_resolve(&branch_head_commit_id, repo, branch);
11220 	if (error)
11221 		goto done;
11222 
11223 	if (!continue_rebase) {
11224 		struct got_object_id *base_commit_id;
11225 
11226 		error = got_ref_open(&head_ref, repo,
11227 		    got_worktree_get_head_ref_name(worktree), 0);
11228 		if (error)
11229 			goto done;
11230 		error = got_ref_resolve(&head_commit_id, repo, head_ref);
11231 		if (error)
11232 			goto done;
11233 		base_commit_id = got_worktree_get_base_commit_id(worktree);
11234 		if (got_object_id_cmp(base_commit_id, head_commit_id) != 0) {
11235 			error = got_error(GOT_ERR_REBASE_OUT_OF_DATE);
11236 			goto done;
11237 		}
11238 
11239 		error = got_commit_graph_find_youngest_common_ancestor(&yca_id,
11240 		    base_commit_id, branch_head_commit_id, 1, repo,
11241 		    check_cancelled, NULL);
11242 		if (error) {
11243 			if (error->code == GOT_ERR_ANCESTRY) {
11244 				error = got_error_msg(GOT_ERR_ANCESTRY,
11245 				    "specified branch shares no common "
11246 				    "ancestry with work tree's branch");
11247 			}
11248 			goto done;
11249 		}
11250 
11251 		error = check_same_branch(base_commit_id, branch, yca_id, repo);
11252 		if (error) {
11253 			if (error->code != GOT_ERR_ANCESTRY)
11254 				goto done;
11255 			error = NULL;
11256 		} else {
11257 			struct got_pathlist_head paths;
11258 			printf("%s is already based on %s\n",
11259 			    got_ref_get_name(branch),
11260 			    got_worktree_get_head_ref_name(worktree));
11261 			error = switch_head_ref(branch, branch_head_commit_id,
11262 			    worktree, repo);
11263 			if (error)
11264 				goto done;
11265 			error = got_worktree_set_base_commit_id(worktree, repo,
11266 			    branch_head_commit_id);
11267 			if (error)
11268 				goto done;
11269 			TAILQ_INIT(&paths);
11270 			error = got_pathlist_append(&paths, "", NULL);
11271 			if (error)
11272 				goto done;
11273 			error = got_worktree_checkout_files(worktree,
11274 			    &paths, repo, update_progress, &upa,
11275 			    check_cancelled, NULL);
11276 			got_pathlist_free(&paths, GOT_PATHLIST_FREE_NONE);
11277 			if (error)
11278 				goto done;
11279 			if (upa.did_something) {
11280 				char *id_str;
11281 				error = got_object_id_str(&id_str,
11282 				    branch_head_commit_id);
11283 				if (error)
11284 					goto done;
11285 				printf("Updated to %s: %s\n",
11286 				    got_worktree_get_head_ref_name(worktree),
11287 				    id_str);
11288 				free(id_str);
11289 			} else
11290 				printf("Already up-to-date\n");
11291 			print_update_progress_stats(&upa);
11292 			goto done;
11293 		}
11294 	}
11295 
11296 	commit_id = branch_head_commit_id;
11297 	error = got_object_open_as_commit(&commit, repo, commit_id);
11298 	if (error)
11299 		goto done;
11300 
11301 	parent_ids = got_object_commit_get_parent_ids(commit);
11302 	pid = STAILQ_FIRST(parent_ids);
11303 	if (pid) {
11304 		error = collect_commits(&commits, commit_id, &pid->id,
11305 		    yca_id, got_worktree_get_path_prefix(worktree),
11306 		    GOT_ERR_REBASE_PATH, repo);
11307 		if (error)
11308 			goto done;
11309 	}
11310 
11311 	got_object_commit_close(commit);
11312 	commit = NULL;
11313 
11314 	if (!continue_rebase) {
11315 		error = got_worktree_rebase_prepare(&new_base_branch,
11316 		    &tmp_branch, &fileindex, worktree, branch, repo);
11317 		if (error)
11318 			goto done;
11319 	}
11320 
11321 	if (STAILQ_EMPTY(&commits)) {
11322 		if (continue_rebase) {
11323 			error = rebase_complete(worktree, fileindex,
11324 			    branch, tmp_branch, repo, create_backup);
11325 			goto done;
11326 		} else {
11327 			/* Fast-forward the reference of the branch. */
11328 			struct got_object_id *new_head_commit_id;
11329 			char *id_str;
11330 			error = got_ref_resolve(&new_head_commit_id, repo,
11331 			    new_base_branch);
11332 			if (error)
11333 				goto done;
11334 			error = got_object_id_str(&id_str, new_head_commit_id);
11335 			if (error)
11336 				goto done;
11337 			printf("Forwarding %s to commit %s\n",
11338 			    got_ref_get_name(branch), id_str);
11339 			free(id_str);
11340 			error = got_ref_change_ref(branch,
11341 			    new_head_commit_id);
11342 			if (error)
11343 				goto done;
11344 			/* No backup needed since objects did not change. */
11345 			create_backup = 0;
11346 		}
11347 	}
11348 
11349 	pid = NULL;
11350 	STAILQ_FOREACH(qid, &commits, entry) {
11351 
11352 		commit_id = &qid->id;
11353 		parent_id = pid ? &pid->id : yca_id;
11354 		pid = qid;
11355 
11356 		memset(&upa, 0, sizeof(upa));
11357 		error = got_worktree_rebase_merge_files(&merged_paths,
11358 		    worktree, fileindex, parent_id, commit_id, repo,
11359 		    update_progress, &upa, check_cancelled, NULL);
11360 		if (error)
11361 			goto done;
11362 
11363 		print_merge_progress_stats(&upa);
11364 		if (upa.conflicts > 0 || upa.missing > 0 ||
11365 		    upa.not_deleted > 0 || upa.unversioned > 0) {
11366 			if (upa.conflicts > 0) {
11367 				error = show_rebase_merge_conflict(&qid->id,
11368 				    repo);
11369 				if (error)
11370 					goto done;
11371 			}
11372 			got_pathlist_free(&merged_paths, GOT_PATHLIST_FREE_PATH);
11373 			break;
11374 		}
11375 
11376 		error = rebase_commit(&merged_paths, worktree, fileindex,
11377 		    tmp_branch, committer, commit_id, 0, repo);
11378 		got_pathlist_free(&merged_paths, GOT_PATHLIST_FREE_PATH);
11379 		if (error)
11380 			goto done;
11381 	}
11382 
11383 	if (upa.conflicts > 0 || upa.missing > 0 ||
11384 	    upa.not_deleted > 0 || upa.unversioned > 0) {
11385 		error = got_worktree_rebase_postpone(worktree, fileindex);
11386 		if (error)
11387 			goto done;
11388 		if (upa.conflicts > 0 && upa.missing == 0 &&
11389 		    upa.not_deleted == 0 && upa.unversioned == 0) {
11390 			error = got_error_msg(GOT_ERR_CONFLICTS,
11391 			    "conflicts must be resolved before rebasing "
11392 			    "can continue");
11393 		} else if (upa.conflicts > 0) {
11394 			error = got_error_msg(GOT_ERR_CONFLICTS,
11395 			    "conflicts must be resolved before rebasing "
11396 			    "can continue; changes destined for some "
11397 			    "files were not yet merged and should be "
11398 			    "merged manually if required before the "
11399 			    "rebase operation is continued");
11400 		} else {
11401 			error = got_error_msg(GOT_ERR_CONFLICTS,
11402 			    "changes destined for some files were not "
11403 			    "yet merged and should be merged manually "
11404 			    "if required before the rebase operation "
11405 			    "is continued");
11406 		}
11407 	} else
11408 		error = rebase_complete(worktree, fileindex, branch,
11409 		    tmp_branch, repo, create_backup);
11410 done:
11411 	free(cwd);
11412 	free(committer);
11413 	free(gitconfig_path);
11414 	got_object_id_queue_free(&commits);
11415 	free(branch_head_commit_id);
11416 	free(resume_commit_id);
11417 	free(head_commit_id);
11418 	free(yca_id);
11419 	if (commit)
11420 		got_object_commit_close(commit);
11421 	if (branch)
11422 		got_ref_close(branch);
11423 	if (new_base_branch)
11424 		got_ref_close(new_base_branch);
11425 	if (tmp_branch)
11426 		got_ref_close(tmp_branch);
11427 	if (head_ref)
11428 		got_ref_close(head_ref);
11429 	if (worktree)
11430 		got_worktree_close(worktree);
11431 	if (repo) {
11432 		const struct got_error *close_err = got_repo_close(repo);
11433 		if (error == NULL)
11434 			error = close_err;
11435 	}
11436 	if (pack_fds) {
11437 		const struct got_error *pack_err =
11438 		    got_repo_pack_fds_close(pack_fds);
11439 		if (error == NULL)
11440 			error = pack_err;
11441 	}
11442 	return error;
11443 }
11444 
11445 __dead static void
11446 usage_histedit(void)
11447 {
11448 	fprintf(stderr, "usage: %s histedit [-aCcdeflmX] [-F histedit-script] "
11449 	    "[branch]\n", getprogname());
11450 	exit(1);
11451 }
11452 
11453 #define GOT_HISTEDIT_PICK 'p'
11454 #define GOT_HISTEDIT_EDIT 'e'
11455 #define GOT_HISTEDIT_FOLD 'f'
11456 #define GOT_HISTEDIT_DROP 'd'
11457 #define GOT_HISTEDIT_MESG 'm'
11458 
11459 static const struct got_histedit_cmd {
11460 	unsigned char code;
11461 	const char *name;
11462 	const char *desc;
11463 } got_histedit_cmds[] = {
11464 	{ GOT_HISTEDIT_PICK, "pick", "use commit" },
11465 	{ GOT_HISTEDIT_EDIT, "edit", "use commit but stop for amending" },
11466 	{ GOT_HISTEDIT_FOLD, "fold", "combine with next commit that will "
11467 	    "be used" },
11468 	{ GOT_HISTEDIT_DROP, "drop", "remove commit from history" },
11469 	{ GOT_HISTEDIT_MESG, "mesg",
11470 	    "single-line log message for commit above (open editor if empty)" },
11471 };
11472 
11473 struct got_histedit_list_entry {
11474 	TAILQ_ENTRY(got_histedit_list_entry) entry;
11475 	struct got_object_id *commit_id;
11476 	const struct got_histedit_cmd *cmd;
11477 	char *logmsg;
11478 };
11479 TAILQ_HEAD(got_histedit_list, got_histedit_list_entry);
11480 
11481 static const struct got_error *
11482 histedit_write_commit(struct got_object_id *commit_id, const char *cmdname,
11483     FILE *f, struct got_repository *repo)
11484 {
11485 	const struct got_error *err = NULL;
11486 	char *logmsg = NULL, *id_str = NULL;
11487 	struct got_commit_object *commit = NULL;
11488 	int n;
11489 
11490 	err = got_object_open_as_commit(&commit, repo, commit_id);
11491 	if (err)
11492 		goto done;
11493 
11494 	err = get_short_logmsg(&logmsg, 34, commit);
11495 	if (err)
11496 		goto done;
11497 
11498 	err = got_object_id_str(&id_str, commit_id);
11499 	if (err)
11500 		goto done;
11501 
11502 	n = fprintf(f, "%s %s %s\n", cmdname, id_str, logmsg);
11503 	if (n < 0)
11504 		err = got_ferror(f, GOT_ERR_IO);
11505 done:
11506 	if (commit)
11507 		got_object_commit_close(commit);
11508 	free(id_str);
11509 	free(logmsg);
11510 	return err;
11511 }
11512 
11513 static const struct got_error *
11514 histedit_write_commit_list(struct got_object_id_queue *commits,
11515     FILE *f, int edit_logmsg_only, int fold_only, int drop_only,
11516     int edit_only, struct got_repository *repo)
11517 {
11518 	const struct got_error *err = NULL;
11519 	struct got_object_qid *qid;
11520 	const char *histedit_cmd = NULL;
11521 
11522 	if (STAILQ_EMPTY(commits))
11523 		return got_error(GOT_ERR_EMPTY_HISTEDIT);
11524 
11525 	STAILQ_FOREACH(qid, commits, entry) {
11526 		histedit_cmd = got_histedit_cmds[0].name;
11527 		if (drop_only)
11528 			histedit_cmd = "drop";
11529 		else if (edit_only)
11530 			histedit_cmd = "edit";
11531 		else if (fold_only && STAILQ_NEXT(qid, entry) != NULL)
11532 			histedit_cmd = "fold";
11533 		err = histedit_write_commit(&qid->id, histedit_cmd, f, repo);
11534 		if (err)
11535 			break;
11536 		if (edit_logmsg_only) {
11537 			int n = fprintf(f, "%c\n", GOT_HISTEDIT_MESG);
11538 			if (n < 0) {
11539 				err = got_ferror(f, GOT_ERR_IO);
11540 				break;
11541 			}
11542 		}
11543 	}
11544 
11545 	return err;
11546 }
11547 
11548 static const struct got_error *
11549 write_cmd_list(FILE *f, const char *branch_name,
11550     struct got_object_id_queue *commits)
11551 {
11552 	const struct got_error *err = NULL;
11553 	size_t i;
11554 	int n;
11555 	char *id_str;
11556 	struct got_object_qid *qid;
11557 
11558 	qid = STAILQ_FIRST(commits);
11559 	err = got_object_id_str(&id_str, &qid->id);
11560 	if (err)
11561 		return err;
11562 
11563 	n = fprintf(f,
11564 	    "# Editing the history of branch '%s' starting at\n"
11565 	    "# commit %s\n"
11566 	    "# Commits will be processed in order from top to "
11567 	    "bottom of this file.\n", branch_name, id_str);
11568 	if (n < 0) {
11569 		err = got_ferror(f, GOT_ERR_IO);
11570 		goto done;
11571 	}
11572 
11573 	n = fprintf(f, "# Available histedit commands:\n");
11574 	if (n < 0) {
11575 		err = got_ferror(f, GOT_ERR_IO);
11576 		goto done;
11577 	}
11578 
11579 	for (i = 0; i < nitems(got_histedit_cmds); i++) {
11580 		const struct got_histedit_cmd *cmd = &got_histedit_cmds[i];
11581 		n = fprintf(f, "#   %s (%c): %s\n", cmd->name, cmd->code,
11582 		    cmd->desc);
11583 		if (n < 0) {
11584 			err = got_ferror(f, GOT_ERR_IO);
11585 			break;
11586 		}
11587 	}
11588 done:
11589 	free(id_str);
11590 	return err;
11591 }
11592 
11593 static const struct got_error *
11594 histedit_syntax_error(int lineno)
11595 {
11596 	static char msg[42];
11597 	int ret;
11598 
11599 	ret = snprintf(msg, sizeof(msg), "histedit syntax error on line %d",
11600 	    lineno);
11601 	if (ret < 0 || (size_t)ret >= sizeof(msg))
11602 		return got_error(GOT_ERR_HISTEDIT_SYNTAX);
11603 
11604 	return got_error_msg(GOT_ERR_HISTEDIT_SYNTAX, msg);
11605 }
11606 
11607 static const struct got_error *
11608 append_folded_commit_msg(char **new_msg, struct got_histedit_list_entry *hle,
11609     char *logmsg, struct got_repository *repo)
11610 {
11611 	const struct got_error *err;
11612 	struct got_commit_object *folded_commit = NULL;
11613 	char *id_str, *folded_logmsg = NULL;
11614 
11615 	err = got_object_id_str(&id_str, hle->commit_id);
11616 	if (err)
11617 		return err;
11618 
11619 	err = got_object_open_as_commit(&folded_commit, repo, hle->commit_id);
11620 	if (err)
11621 		goto done;
11622 
11623 	err = got_object_commit_get_logmsg(&folded_logmsg, folded_commit);
11624 	if (err)
11625 		goto done;
11626 	if (asprintf(new_msg, "%s%s# log message of folded commit %s: %s",
11627 	    logmsg ? logmsg : "", logmsg ? "\n" : "", id_str,
11628 	    folded_logmsg) == -1) {
11629 		err = got_error_from_errno("asprintf");
11630 	}
11631 done:
11632 	if (folded_commit)
11633 		got_object_commit_close(folded_commit);
11634 	free(id_str);
11635 	free(folded_logmsg);
11636 	return err;
11637 }
11638 
11639 static struct got_histedit_list_entry *
11640 get_folded_commits(struct got_histedit_list_entry *hle)
11641 {
11642 	struct got_histedit_list_entry *prev, *folded = NULL;
11643 
11644 	prev = TAILQ_PREV(hle, got_histedit_list, entry);
11645 	while (prev && (prev->cmd->code == GOT_HISTEDIT_FOLD ||
11646 	    prev->cmd->code == GOT_HISTEDIT_DROP)) {
11647 		if (prev->cmd->code == GOT_HISTEDIT_FOLD)
11648 			folded = prev;
11649 		prev = TAILQ_PREV(prev, got_histedit_list, entry);
11650 	}
11651 
11652 	return folded;
11653 }
11654 
11655 static const struct got_error *
11656 histedit_edit_logmsg(struct got_histedit_list_entry *hle,
11657     struct got_repository *repo)
11658 {
11659 	char *logmsg_path = NULL, *id_str = NULL, *orig_logmsg = NULL;
11660 	char *logmsg = NULL, *new_msg = NULL, *editor = NULL;
11661 	const struct got_error *err = NULL;
11662 	struct got_commit_object *commit = NULL;
11663 	int logmsg_len;
11664 	int fd;
11665 	struct got_histedit_list_entry *folded = NULL;
11666 
11667 	err = got_object_open_as_commit(&commit, repo, hle->commit_id);
11668 	if (err)
11669 		return err;
11670 
11671 	folded = get_folded_commits(hle);
11672 	if (folded) {
11673 		while (folded != hle) {
11674 			if (folded->cmd->code == GOT_HISTEDIT_DROP) {
11675 				folded = TAILQ_NEXT(folded, entry);
11676 				continue;
11677 			}
11678 			err = append_folded_commit_msg(&new_msg, folded,
11679 			    logmsg, repo);
11680 			if (err)
11681 				goto done;
11682 			free(logmsg);
11683 			logmsg = new_msg;
11684 			folded = TAILQ_NEXT(folded, entry);
11685 		}
11686 	}
11687 
11688 	err = got_object_id_str(&id_str, hle->commit_id);
11689 	if (err)
11690 		goto done;
11691 	err = got_object_commit_get_logmsg(&orig_logmsg, commit);
11692 	if (err)
11693 		goto done;
11694 	logmsg_len = asprintf(&new_msg,
11695 	    "%s\n# original log message of commit %s: %s",
11696 	    logmsg ? logmsg : "", id_str, orig_logmsg);
11697 	if (logmsg_len == -1) {
11698 		err = got_error_from_errno("asprintf");
11699 		goto done;
11700 	}
11701 	free(logmsg);
11702 	logmsg = new_msg;
11703 
11704 	err = got_object_id_str(&id_str, hle->commit_id);
11705 	if (err)
11706 		goto done;
11707 
11708 	err = got_opentemp_named_fd(&logmsg_path, &fd,
11709 	    GOT_TMPDIR_STR "/got-logmsg", "");
11710 	if (err)
11711 		goto done;
11712 
11713 	write(fd, logmsg, logmsg_len);
11714 	close(fd);
11715 
11716 	err = get_editor(&editor);
11717 	if (err)
11718 		goto done;
11719 
11720 	err = edit_logmsg(&hle->logmsg, editor, logmsg_path, logmsg,
11721 	    logmsg_len, 0);
11722 	if (err) {
11723 		if (err->code != GOT_ERR_COMMIT_MSG_EMPTY)
11724 			goto done;
11725 		err = NULL;
11726 		hle->logmsg = strdup(new_msg);
11727 		if (hle->logmsg == NULL)
11728 			err = got_error_from_errno("strdup");
11729 	}
11730 done:
11731 	if (logmsg_path && unlink(logmsg_path) != 0 && err == NULL)
11732 		err = got_error_from_errno2("unlink", logmsg_path);
11733 	free(logmsg_path);
11734 	free(logmsg);
11735 	free(orig_logmsg);
11736 	free(editor);
11737 	if (commit)
11738 		got_object_commit_close(commit);
11739 	return err;
11740 }
11741 
11742 static const struct got_error *
11743 histedit_parse_list(struct got_histedit_list *histedit_cmds,
11744     FILE *f, struct got_repository *repo)
11745 {
11746 	const struct got_error *err = NULL;
11747 	char *line = NULL, *p, *end;
11748 	size_t i, linesize = 0;
11749 	ssize_t linelen;
11750 	int lineno = 0, lastcmd = -1;
11751 	const struct got_histedit_cmd *cmd;
11752 	struct got_object_id *commit_id = NULL;
11753 	struct got_histedit_list_entry *hle = NULL;
11754 
11755 	for (;;) {
11756 		linelen = getline(&line, &linesize, f);
11757 		if (linelen == -1) {
11758 			const struct got_error *getline_err;
11759 			if (feof(f))
11760 				break;
11761 			getline_err = got_error_from_errno("getline");
11762 			err = got_ferror(f, getline_err->code);
11763 			break;
11764 		}
11765 		lineno++;
11766 		p = line;
11767 		while (isspace((unsigned char)p[0]))
11768 			p++;
11769 		if (p[0] == '#' || p[0] == '\0')
11770 			continue;
11771 		cmd = NULL;
11772 		for (i = 0; i < nitems(got_histedit_cmds); i++) {
11773 			cmd = &got_histedit_cmds[i];
11774 			if (strncmp(cmd->name, p, strlen(cmd->name)) == 0 &&
11775 			    isspace((unsigned char)p[strlen(cmd->name)])) {
11776 				p += strlen(cmd->name);
11777 				break;
11778 			}
11779 			if (p[0] == cmd->code && isspace((unsigned char)p[1])) {
11780 				p++;
11781 				break;
11782 			}
11783 		}
11784 		if (i == nitems(got_histedit_cmds)) {
11785 			err = histedit_syntax_error(lineno);
11786 			break;
11787 		}
11788 		while (isspace((unsigned char)p[0]))
11789 			p++;
11790 		if (cmd->code == GOT_HISTEDIT_MESG) {
11791 			if (lastcmd != GOT_HISTEDIT_PICK &&
11792 			    lastcmd != GOT_HISTEDIT_EDIT) {
11793 				err = got_error(GOT_ERR_HISTEDIT_CMD);
11794 				break;
11795 			}
11796 			if (p[0] == '\0') {
11797 				err = histedit_edit_logmsg(hle, repo);
11798 				if (err)
11799 					break;
11800 			} else {
11801 				hle->logmsg = strdup(p);
11802 				if (hle->logmsg == NULL) {
11803 					err = got_error_from_errno("strdup");
11804 					break;
11805 				}
11806 			}
11807 			lastcmd = cmd->code;
11808 			continue;
11809 		} else {
11810 			end = p;
11811 			while (end[0] && !isspace((unsigned char)end[0]))
11812 				end++;
11813 			*end = '\0';
11814 
11815 			err = got_object_resolve_id_str(&commit_id, repo, p);
11816 			if (err) {
11817 				/* override error code */
11818 				err = histedit_syntax_error(lineno);
11819 				break;
11820 			}
11821 		}
11822 		hle = malloc(sizeof(*hle));
11823 		if (hle == NULL) {
11824 			err = got_error_from_errno("malloc");
11825 			break;
11826 		}
11827 		hle->cmd = cmd;
11828 		hle->commit_id = commit_id;
11829 		hle->logmsg = NULL;
11830 		commit_id = NULL;
11831 		TAILQ_INSERT_TAIL(histedit_cmds, hle, entry);
11832 		lastcmd = cmd->code;
11833 	}
11834 
11835 	free(line);
11836 	free(commit_id);
11837 	return err;
11838 }
11839 
11840 static const struct got_error *
11841 histedit_check_script(struct got_histedit_list *histedit_cmds,
11842     struct got_object_id_queue *commits, struct got_repository *repo)
11843 {
11844 	const struct got_error *err = NULL;
11845 	struct got_object_qid *qid;
11846 	struct got_histedit_list_entry *hle;
11847 	static char msg[92];
11848 	char *id_str;
11849 
11850 	if (TAILQ_EMPTY(histedit_cmds))
11851 		return got_error_msg(GOT_ERR_EMPTY_HISTEDIT,
11852 		    "histedit script contains no commands");
11853 	if (STAILQ_EMPTY(commits))
11854 		return got_error(GOT_ERR_EMPTY_HISTEDIT);
11855 
11856 	TAILQ_FOREACH(hle, histedit_cmds, entry) {
11857 		struct got_histedit_list_entry *hle2;
11858 		TAILQ_FOREACH(hle2, histedit_cmds, entry) {
11859 			if (hle == hle2)
11860 				continue;
11861 			if (got_object_id_cmp(hle->commit_id,
11862 			    hle2->commit_id) != 0)
11863 				continue;
11864 			err = got_object_id_str(&id_str, hle->commit_id);
11865 			if (err)
11866 				return err;
11867 			snprintf(msg, sizeof(msg), "commit %s is listed "
11868 			    "more than once in histedit script", id_str);
11869 			free(id_str);
11870 			return got_error_msg(GOT_ERR_HISTEDIT_CMD, msg);
11871 		}
11872 	}
11873 
11874 	STAILQ_FOREACH(qid, commits, entry) {
11875 		TAILQ_FOREACH(hle, histedit_cmds, entry) {
11876 			if (got_object_id_cmp(&qid->id, hle->commit_id) == 0)
11877 				break;
11878 		}
11879 		if (hle == NULL) {
11880 			err = got_object_id_str(&id_str, &qid->id);
11881 			if (err)
11882 				return err;
11883 			snprintf(msg, sizeof(msg),
11884 			    "commit %s missing from histedit script", id_str);
11885 			free(id_str);
11886 			return got_error_msg(GOT_ERR_HISTEDIT_CMD, msg);
11887 		}
11888 	}
11889 
11890 	hle = TAILQ_LAST(histedit_cmds, got_histedit_list);
11891 	if (hle && hle->cmd->code == GOT_HISTEDIT_FOLD)
11892 		return got_error_msg(GOT_ERR_HISTEDIT_CMD,
11893 		    "last commit in histedit script cannot be folded");
11894 
11895 	return NULL;
11896 }
11897 
11898 static const struct got_error *
11899 histedit_run_editor(struct got_histedit_list *histedit_cmds,
11900     const char *path, struct got_object_id_queue *commits,
11901     struct got_repository *repo)
11902 {
11903 	const struct got_error *err = NULL;
11904 	char *editor;
11905 	FILE *f = NULL;
11906 
11907 	err = get_editor(&editor);
11908 	if (err)
11909 		return err;
11910 
11911 	if (spawn_editor(editor, path) == -1) {
11912 		err = got_error_from_errno("failed spawning editor");
11913 		goto done;
11914 	}
11915 
11916 	f = fopen(path, "re");
11917 	if (f == NULL) {
11918 		err = got_error_from_errno("fopen");
11919 		goto done;
11920 	}
11921 	err = histedit_parse_list(histedit_cmds, f, repo);
11922 	if (err)
11923 		goto done;
11924 
11925 	err = histedit_check_script(histedit_cmds, commits, repo);
11926 done:
11927 	if (f && fclose(f) == EOF && err == NULL)
11928 		err = got_error_from_errno("fclose");
11929 	free(editor);
11930 	return err;
11931 }
11932 
11933 static const struct got_error *
11934 histedit_edit_list_retry(struct got_histedit_list *, const struct got_error *,
11935     struct got_object_id_queue *, const char *, const char *,
11936     struct got_repository *);
11937 
11938 static const struct got_error *
11939 histedit_edit_script(struct got_histedit_list *histedit_cmds,
11940     struct got_object_id_queue *commits, const char *branch_name,
11941     int edit_logmsg_only, int fold_only, int drop_only, int edit_only,
11942     struct got_repository *repo)
11943 {
11944 	const struct got_error *err;
11945 	FILE *f = NULL;
11946 	char *path = NULL;
11947 
11948 	err = got_opentemp_named(&path, &f, "got-histedit", "");
11949 	if (err)
11950 		return err;
11951 
11952 	err = write_cmd_list(f, branch_name, commits);
11953 	if (err)
11954 		goto done;
11955 
11956 	err = histedit_write_commit_list(commits, f, edit_logmsg_only,
11957 	    fold_only, drop_only, edit_only, repo);
11958 	if (err)
11959 		goto done;
11960 
11961 	if (drop_only || edit_logmsg_only || fold_only || edit_only) {
11962 		rewind(f);
11963 		err = histedit_parse_list(histedit_cmds, f, repo);
11964 	} else {
11965 		if (fclose(f) == EOF) {
11966 			err = got_error_from_errno("fclose");
11967 			goto done;
11968 		}
11969 		f = NULL;
11970 		err = histedit_run_editor(histedit_cmds, path, commits, repo);
11971 		if (err) {
11972 			if (err->code != GOT_ERR_HISTEDIT_SYNTAX &&
11973 			    err->code != GOT_ERR_HISTEDIT_CMD)
11974 				goto done;
11975 			err = histedit_edit_list_retry(histedit_cmds, err,
11976 			    commits, path, branch_name, repo);
11977 		}
11978 	}
11979 done:
11980 	if (f && fclose(f) == EOF && err == NULL)
11981 		err = got_error_from_errno("fclose");
11982 	if (path && unlink(path) != 0 && err == NULL)
11983 		err = got_error_from_errno2("unlink", path);
11984 	free(path);
11985 	return err;
11986 }
11987 
11988 static const struct got_error *
11989 histedit_save_list(struct got_histedit_list *histedit_cmds,
11990     struct got_worktree *worktree, struct got_repository *repo)
11991 {
11992 	const struct got_error *err = NULL;
11993 	char *path = NULL;
11994 	FILE *f = NULL;
11995 	struct got_histedit_list_entry *hle;
11996 	struct got_commit_object *commit = NULL;
11997 
11998 	err = got_worktree_get_histedit_script_path(&path, worktree);
11999 	if (err)
12000 		return err;
12001 
12002 	f = fopen(path, "we");
12003 	if (f == NULL) {
12004 		err = got_error_from_errno2("fopen", path);
12005 		goto done;
12006 	}
12007 	TAILQ_FOREACH(hle, histedit_cmds, entry) {
12008 		err = histedit_write_commit(hle->commit_id, hle->cmd->name, f,
12009 		    repo);
12010 		if (err)
12011 			break;
12012 
12013 		if (hle->logmsg) {
12014 			int n = fprintf(f, "%c %s\n",
12015 			    GOT_HISTEDIT_MESG, hle->logmsg);
12016 			if (n < 0) {
12017 				err = got_ferror(f, GOT_ERR_IO);
12018 				break;
12019 			}
12020 		}
12021 	}
12022 done:
12023 	if (f && fclose(f) == EOF && err == NULL)
12024 		err = got_error_from_errno("fclose");
12025 	free(path);
12026 	if (commit)
12027 		got_object_commit_close(commit);
12028 	return err;
12029 }
12030 
12031 static void
12032 histedit_free_list(struct got_histedit_list *histedit_cmds)
12033 {
12034 	struct got_histedit_list_entry *hle;
12035 
12036 	while ((hle = TAILQ_FIRST(histedit_cmds))) {
12037 		TAILQ_REMOVE(histedit_cmds, hle, entry);
12038 		free(hle);
12039 	}
12040 }
12041 
12042 static const struct got_error *
12043 histedit_load_list(struct got_histedit_list *histedit_cmds,
12044     const char *path, struct got_repository *repo)
12045 {
12046 	const struct got_error *err = NULL;
12047 	FILE *f = NULL;
12048 
12049 	f = fopen(path, "re");
12050 	if (f == NULL) {
12051 		err = got_error_from_errno2("fopen", path);
12052 		goto done;
12053 	}
12054 
12055 	err = histedit_parse_list(histedit_cmds, f, repo);
12056 done:
12057 	if (f && fclose(f) == EOF && err == NULL)
12058 		err = got_error_from_errno("fclose");
12059 	return err;
12060 }
12061 
12062 static const struct got_error *
12063 histedit_edit_list_retry(struct got_histedit_list *histedit_cmds,
12064     const struct got_error *edit_err, struct got_object_id_queue *commits,
12065     const char *path, const char *branch_name, struct got_repository *repo)
12066 {
12067 	const struct got_error *err = NULL, *prev_err = edit_err;
12068 	int resp = ' ';
12069 
12070 	while (resp != 'c' && resp != 'r' && resp != 'a') {
12071 		printf("%s: %s\n(c)ontinue editing, (r)estart editing, "
12072 		    "or (a)bort: ", getprogname(), prev_err->msg);
12073 		resp = getchar();
12074 		if (resp == '\n')
12075 			resp = getchar();
12076 		if (resp == 'c') {
12077 			histedit_free_list(histedit_cmds);
12078 			err = histedit_run_editor(histedit_cmds, path, commits,
12079 			    repo);
12080 			if (err) {
12081 				if (err->code != GOT_ERR_HISTEDIT_SYNTAX &&
12082 				    err->code != GOT_ERR_HISTEDIT_CMD)
12083 					break;
12084 				prev_err = err;
12085 				resp = ' ';
12086 				continue;
12087 			}
12088 			break;
12089 		} else if (resp == 'r') {
12090 			histedit_free_list(histedit_cmds);
12091 			err = histedit_edit_script(histedit_cmds,
12092 			    commits, branch_name, 0, 0, 0, 0, repo);
12093 			if (err) {
12094 				if (err->code != GOT_ERR_HISTEDIT_SYNTAX &&
12095 				    err->code != GOT_ERR_HISTEDIT_CMD)
12096 					break;
12097 				prev_err = err;
12098 				resp = ' ';
12099 				continue;
12100 			}
12101 			break;
12102 		} else if (resp == 'a') {
12103 			err = got_error(GOT_ERR_HISTEDIT_CANCEL);
12104 			break;
12105 		} else
12106 			printf("invalid response '%c'\n", resp);
12107 	}
12108 
12109 	return err;
12110 }
12111 
12112 static const struct got_error *
12113 histedit_complete(struct got_worktree *worktree,
12114     struct got_fileindex *fileindex, struct got_reference *tmp_branch,
12115     struct got_reference *branch, struct got_repository *repo)
12116 {
12117 	printf("Switching work tree to %s\n",
12118 	    got_ref_get_symref_target(branch));
12119 	return got_worktree_histedit_complete(worktree, fileindex, tmp_branch,
12120 	    branch, repo);
12121 }
12122 
12123 static const struct got_error *
12124 show_histedit_progress(struct got_commit_object *commit,
12125     struct got_histedit_list_entry *hle, struct got_object_id *new_id)
12126 {
12127 	const struct got_error *err;
12128 	char *old_id_str = NULL, *new_id_str = NULL, *logmsg = NULL;
12129 
12130 	err = got_object_id_str(&old_id_str, hle->commit_id);
12131 	if (err)
12132 		goto done;
12133 
12134 	if (new_id) {
12135 		err = got_object_id_str(&new_id_str, new_id);
12136 		if (err)
12137 			goto done;
12138 	}
12139 
12140 	old_id_str[12] = '\0';
12141 	if (new_id_str)
12142 		new_id_str[12] = '\0';
12143 
12144 	if (hle->logmsg) {
12145 		logmsg = strdup(hle->logmsg);
12146 		if (logmsg == NULL) {
12147 			err = got_error_from_errno("strdup");
12148 			goto done;
12149 		}
12150 		trim_logmsg(logmsg, 42);
12151 	} else {
12152 		err = get_short_logmsg(&logmsg, 42, commit);
12153 		if (err)
12154 			goto done;
12155 	}
12156 
12157 	switch (hle->cmd->code) {
12158 	case GOT_HISTEDIT_PICK:
12159 	case GOT_HISTEDIT_EDIT:
12160 		printf("%s -> %s: %s\n", old_id_str,
12161 		    new_id_str ? new_id_str : "no-op change", logmsg);
12162 		break;
12163 	case GOT_HISTEDIT_DROP:
12164 	case GOT_HISTEDIT_FOLD:
12165 		printf("%s ->  %s commit: %s\n", old_id_str, hle->cmd->name,
12166 		    logmsg);
12167 		break;
12168 	default:
12169 		break;
12170 	}
12171 done:
12172 	free(old_id_str);
12173 	free(new_id_str);
12174 	return err;
12175 }
12176 
12177 static const struct got_error *
12178 histedit_commit(struct got_pathlist_head *merged_paths,
12179     struct got_worktree *worktree, struct got_fileindex *fileindex,
12180     struct got_reference *tmp_branch, struct got_histedit_list_entry *hle,
12181     const char *committer, int allow_conflict, struct got_repository *repo)
12182 {
12183 	const struct got_error *err;
12184 	struct got_commit_object *commit;
12185 	struct got_object_id *new_commit_id;
12186 
12187 	if ((hle->cmd->code == GOT_HISTEDIT_EDIT || get_folded_commits(hle))
12188 	    && hle->logmsg == NULL) {
12189 		err = histedit_edit_logmsg(hle, repo);
12190 		if (err)
12191 			return err;
12192 	}
12193 
12194 	err = got_object_open_as_commit(&commit, repo, hle->commit_id);
12195 	if (err)
12196 		return err;
12197 
12198 	err = got_worktree_histedit_commit(&new_commit_id, merged_paths,
12199 	    worktree, fileindex, tmp_branch, committer, commit, hle->commit_id,
12200 	    hle->logmsg, allow_conflict, repo);
12201 	if (err) {
12202 		if (err->code != GOT_ERR_COMMIT_NO_CHANGES)
12203 			goto done;
12204 		err = show_histedit_progress(commit, hle, NULL);
12205 	} else {
12206 		err = show_histedit_progress(commit, hle, new_commit_id);
12207 		free(new_commit_id);
12208 	}
12209 done:
12210 	got_object_commit_close(commit);
12211 	return err;
12212 }
12213 
12214 static const struct got_error *
12215 histedit_skip_commit(struct got_histedit_list_entry *hle,
12216     struct got_worktree *worktree, struct got_repository *repo)
12217 {
12218 	const struct got_error *error;
12219 	struct got_commit_object *commit;
12220 
12221 	error = got_worktree_histedit_skip_commit(worktree, hle->commit_id,
12222 	    repo);
12223 	if (error)
12224 		return error;
12225 
12226 	error = got_object_open_as_commit(&commit, repo, hle->commit_id);
12227 	if (error)
12228 		return error;
12229 
12230 	error = show_histedit_progress(commit, hle, NULL);
12231 	got_object_commit_close(commit);
12232 	return error;
12233 }
12234 
12235 static const struct got_error *
12236 check_local_changes(void *arg, unsigned char status,
12237     unsigned char staged_status, const char *path,
12238     struct got_object_id *blob_id, struct got_object_id *staged_blob_id,
12239     struct got_object_id *commit_id, int dirfd, const char *de_name)
12240 {
12241 	int *have_local_changes = arg;
12242 
12243 	switch (status) {
12244 	case GOT_STATUS_ADD:
12245 	case GOT_STATUS_DELETE:
12246 	case GOT_STATUS_MODIFY:
12247 	case GOT_STATUS_CONFLICT:
12248 		*have_local_changes = 1;
12249 		return got_error(GOT_ERR_CANCELLED);
12250 	default:
12251 		break;
12252 	}
12253 
12254 	switch (staged_status) {
12255 	case GOT_STATUS_ADD:
12256 	case GOT_STATUS_DELETE:
12257 	case GOT_STATUS_MODIFY:
12258 		*have_local_changes = 1;
12259 		return got_error(GOT_ERR_CANCELLED);
12260 	default:
12261 		break;
12262 	}
12263 
12264 	return NULL;
12265 }
12266 
12267 static const struct got_error *
12268 cmd_histedit(int argc, char *argv[])
12269 {
12270 	const struct got_error *error = NULL;
12271 	struct got_worktree *worktree = NULL;
12272 	struct got_fileindex *fileindex = NULL;
12273 	struct got_repository *repo = NULL;
12274 	char *cwd = NULL, *committer = NULL, *gitconfig_path = NULL;
12275 	struct got_reference *branch = NULL;
12276 	struct got_reference *tmp_branch = NULL;
12277 	struct got_object_id *resume_commit_id = NULL;
12278 	struct got_object_id *base_commit_id = NULL;
12279 	struct got_object_id *head_commit_id = NULL;
12280 	struct got_commit_object *commit = NULL;
12281 	int ch, rebase_in_progress = 0, merge_in_progress = 0;
12282 	struct got_update_progress_arg upa;
12283 	int edit_in_progress = 0, abort_edit = 0, continue_edit = 0;
12284 	int drop_only = 0, edit_logmsg_only = 0, fold_only = 0, edit_only = 0;
12285 	int allow_conflict = 0, list_backups = 0, delete_backups = 0;
12286 	const char *edit_script_path = NULL;
12287 	struct got_object_id_queue commits;
12288 	struct got_pathlist_head merged_paths;
12289 	const struct got_object_id_queue *parent_ids;
12290 	struct got_object_qid *pid;
12291 	struct got_histedit_list histedit_cmds;
12292 	struct got_histedit_list_entry *hle;
12293 	int *pack_fds = NULL;
12294 
12295 	STAILQ_INIT(&commits);
12296 	TAILQ_INIT(&histedit_cmds);
12297 	TAILQ_INIT(&merged_paths);
12298 	memset(&upa, 0, sizeof(upa));
12299 
12300 #ifndef PROFILE
12301 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
12302 	    "unveil", NULL) == -1)
12303 		err(1, "pledge");
12304 #endif
12305 
12306 	while ((ch = getopt(argc, argv, "aCcdeF:flmX")) != -1) {
12307 		switch (ch) {
12308 		case 'a':
12309 			abort_edit = 1;
12310 			break;
12311 		case 'C':
12312 			allow_conflict = 1;
12313 			break;
12314 		case 'c':
12315 			continue_edit = 1;
12316 			break;
12317 		case 'd':
12318 			drop_only = 1;
12319 			break;
12320 		case 'e':
12321 			edit_only = 1;
12322 			break;
12323 		case 'F':
12324 			edit_script_path = optarg;
12325 			break;
12326 		case 'f':
12327 			fold_only = 1;
12328 			break;
12329 		case 'l':
12330 			list_backups = 1;
12331 			break;
12332 		case 'm':
12333 			edit_logmsg_only = 1;
12334 			break;
12335 		case 'X':
12336 			delete_backups = 1;
12337 			break;
12338 		default:
12339 			usage_histedit();
12340 			/* NOTREACHED */
12341 		}
12342 	}
12343 
12344 	argc -= optind;
12345 	argv += optind;
12346 
12347 	if (abort_edit && allow_conflict)
12348 		option_conflict('a', 'C');
12349 	if (abort_edit && continue_edit)
12350 		option_conflict('a', 'c');
12351 	if (edit_script_path && allow_conflict)
12352 		option_conflict('F', 'C');
12353 	if (edit_script_path && edit_logmsg_only)
12354 		option_conflict('F', 'm');
12355 	if (abort_edit && edit_logmsg_only)
12356 		option_conflict('a', 'm');
12357 	if (edit_logmsg_only && allow_conflict)
12358 		option_conflict('m', 'C');
12359 	if (continue_edit && edit_logmsg_only)
12360 		option_conflict('c', 'm');
12361 	if (abort_edit && fold_only)
12362 		option_conflict('a', 'f');
12363 	if (fold_only && allow_conflict)
12364 		option_conflict('f', 'C');
12365 	if (continue_edit && fold_only)
12366 		option_conflict('c', 'f');
12367 	if (fold_only && edit_logmsg_only)
12368 		option_conflict('f', 'm');
12369 	if (edit_script_path && fold_only)
12370 		option_conflict('F', 'f');
12371 	if (abort_edit && edit_only)
12372 		option_conflict('a', 'e');
12373 	if (continue_edit && edit_only)
12374 		option_conflict('c', 'e');
12375 	if (edit_only && edit_logmsg_only)
12376 		option_conflict('e', 'm');
12377 	if (edit_script_path && edit_only)
12378 		option_conflict('F', 'e');
12379 	if (fold_only && edit_only)
12380 		option_conflict('f', 'e');
12381 	if (drop_only && abort_edit)
12382 		option_conflict('d', 'a');
12383 	if (drop_only && allow_conflict)
12384 		option_conflict('d', 'C');
12385 	if (drop_only && continue_edit)
12386 		option_conflict('d', 'c');
12387 	if (drop_only && edit_logmsg_only)
12388 		option_conflict('d', 'm');
12389 	if (drop_only && edit_only)
12390 		option_conflict('d', 'e');
12391 	if (drop_only && edit_script_path)
12392 		option_conflict('d', 'F');
12393 	if (drop_only && fold_only)
12394 		option_conflict('d', 'f');
12395 	if (list_backups) {
12396 		if (abort_edit)
12397 			option_conflict('l', 'a');
12398 		if (allow_conflict)
12399 			option_conflict('l', 'C');
12400 		if (continue_edit)
12401 			option_conflict('l', 'c');
12402 		if (edit_script_path)
12403 			option_conflict('l', 'F');
12404 		if (edit_logmsg_only)
12405 			option_conflict('l', 'm');
12406 		if (drop_only)
12407 			option_conflict('l', 'd');
12408 		if (fold_only)
12409 			option_conflict('l', 'f');
12410 		if (edit_only)
12411 			option_conflict('l', 'e');
12412 		if (delete_backups)
12413 			option_conflict('l', 'X');
12414 		if (argc != 0 && argc != 1)
12415 			usage_histedit();
12416 	} else if (delete_backups) {
12417 		if (abort_edit)
12418 			option_conflict('X', 'a');
12419 		if (allow_conflict)
12420 			option_conflict('X', 'C');
12421 		if (continue_edit)
12422 			option_conflict('X', 'c');
12423 		if (drop_only)
12424 			option_conflict('X', 'd');
12425 		if (edit_script_path)
12426 			option_conflict('X', 'F');
12427 		if (edit_logmsg_only)
12428 			option_conflict('X', 'm');
12429 		if (fold_only)
12430 			option_conflict('X', 'f');
12431 		if (edit_only)
12432 			option_conflict('X', 'e');
12433 		if (list_backups)
12434 			option_conflict('X', 'l');
12435 		if (argc != 0 && argc != 1)
12436 			usage_histedit();
12437 	} else if (allow_conflict && !continue_edit)
12438 		errx(1, "-C option requires -c");
12439 	else if (argc != 0)
12440 		usage_histedit();
12441 
12442 	/*
12443 	 * This command cannot apply unveil(2) in all cases because the
12444 	 * user may choose to run an editor to edit the histedit script
12445 	 * and to edit individual commit log messages.
12446 	 * unveil(2) traverses exec(2); if an editor is used we have to
12447 	 * apply unveil after edit script and log messages have been written.
12448 	 * XXX TODO: Make use of unveil(2) where possible.
12449 	 */
12450 
12451 	cwd = getcwd(NULL, 0);
12452 	if (cwd == NULL) {
12453 		error = got_error_from_errno("getcwd");
12454 		goto done;
12455 	}
12456 
12457 	error = got_repo_pack_fds_open(&pack_fds);
12458 	if (error != NULL)
12459 		goto done;
12460 
12461 	error = got_worktree_open(&worktree, cwd);
12462 	if (error) {
12463 		if (list_backups || delete_backups) {
12464 			if (error->code != GOT_ERR_NOT_WORKTREE)
12465 				goto done;
12466 		} else {
12467 			if (error->code == GOT_ERR_NOT_WORKTREE)
12468 				error = wrap_not_worktree_error(error,
12469 				    "histedit", cwd);
12470 			goto done;
12471 		}
12472 	}
12473 
12474 	if (list_backups || delete_backups) {
12475 		error = got_repo_open(&repo,
12476 		    worktree ? got_worktree_get_repo_path(worktree) : cwd,
12477 		    NULL, pack_fds);
12478 		if (error != NULL)
12479 			goto done;
12480 		error = apply_unveil(got_repo_get_path(repo), 0,
12481 		    worktree ? got_worktree_get_root_path(worktree) : NULL);
12482 		if (error)
12483 			goto done;
12484 		error = process_backup_refs(
12485 		    GOT_WORKTREE_HISTEDIT_BACKUP_REF_PREFIX,
12486 		    argc == 1 ? argv[0] : NULL, delete_backups, repo);
12487 		goto done; /* nothing else to do */
12488 	}
12489 
12490 	error = get_gitconfig_path(&gitconfig_path);
12491 	if (error)
12492 		goto done;
12493 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
12494 	    gitconfig_path, pack_fds);
12495 	if (error != NULL)
12496 		goto done;
12497 
12498 	if (worktree != NULL && !list_backups && !delete_backups) {
12499 		error = worktree_has_logmsg_ref("histedit", worktree, repo);
12500 		if (error)
12501 			goto done;
12502 	}
12503 
12504 	error = got_worktree_rebase_in_progress(&rebase_in_progress, worktree);
12505 	if (error)
12506 		goto done;
12507 	if (rebase_in_progress) {
12508 		error = got_error(GOT_ERR_REBASING);
12509 		goto done;
12510 	}
12511 
12512 	error = got_worktree_merge_in_progress(&merge_in_progress, worktree,
12513 	    repo);
12514 	if (error)
12515 		goto done;
12516 	if (merge_in_progress) {
12517 		error = got_error(GOT_ERR_MERGE_BUSY);
12518 		goto done;
12519 	}
12520 
12521 	error = got_worktree_histedit_in_progress(&edit_in_progress, worktree);
12522 	if (error)
12523 		goto done;
12524 
12525 	if (edit_in_progress && edit_logmsg_only) {
12526 		error = got_error_msg(GOT_ERR_HISTEDIT_BUSY,
12527 		    "histedit operation is in progress in this "
12528 		    "work tree and must be continued or aborted "
12529 		    "before the -m option can be used");
12530 		goto done;
12531 	}
12532 	if (edit_in_progress && drop_only) {
12533 		error = got_error_msg(GOT_ERR_HISTEDIT_BUSY,
12534 		    "histedit operation is in progress in this "
12535 		    "work tree and must be continued or aborted "
12536 		    "before the -d option can be used");
12537 		goto done;
12538 	}
12539 	if (edit_in_progress && fold_only) {
12540 		error = got_error_msg(GOT_ERR_HISTEDIT_BUSY,
12541 		    "histedit operation is in progress in this "
12542 		    "work tree and must be continued or aborted "
12543 		    "before the -f option can be used");
12544 		goto done;
12545 	}
12546 	if (edit_in_progress && edit_only) {
12547 		error = got_error_msg(GOT_ERR_HISTEDIT_BUSY,
12548 		    "histedit operation is in progress in this "
12549 		    "work tree and must be continued or aborted "
12550 		    "before the -e option can be used");
12551 		goto done;
12552 	}
12553 
12554 	if (edit_in_progress && abort_edit) {
12555 		error = got_worktree_histedit_continue(&resume_commit_id,
12556 		    &tmp_branch, &branch, &base_commit_id, &fileindex,
12557 		    worktree, repo);
12558 		if (error)
12559 			goto done;
12560 		printf("Switching work tree to %s\n",
12561 		    got_ref_get_symref_target(branch));
12562 		error = got_worktree_histedit_abort(worktree, fileindex, repo,
12563 		    branch, base_commit_id, abort_progress, &upa);
12564 		if (error)
12565 			goto done;
12566 		printf("Histedit of %s aborted\n",
12567 		    got_ref_get_symref_target(branch));
12568 		print_merge_progress_stats(&upa);
12569 		goto done; /* nothing else to do */
12570 	} else if (abort_edit) {
12571 		error = got_error(GOT_ERR_NOT_HISTEDIT);
12572 		goto done;
12573 	}
12574 
12575 	error = get_author(&committer, repo, worktree);
12576 	if (error)
12577 		goto done;
12578 
12579 	if (continue_edit) {
12580 		char *path;
12581 
12582 		if (!edit_in_progress) {
12583 			error = got_error(GOT_ERR_NOT_HISTEDIT);
12584 			goto done;
12585 		}
12586 
12587 		error = got_worktree_get_histedit_script_path(&path, worktree);
12588 		if (error)
12589 			goto done;
12590 
12591 		error = histedit_load_list(&histedit_cmds, path, repo);
12592 		free(path);
12593 		if (error)
12594 			goto done;
12595 
12596 		error = got_worktree_histedit_continue(&resume_commit_id,
12597 		    &tmp_branch, &branch, &base_commit_id, &fileindex,
12598 		    worktree, repo);
12599 		if (error)
12600 			goto done;
12601 
12602 		error = got_ref_resolve(&head_commit_id, repo, branch);
12603 		if (error)
12604 			goto done;
12605 
12606 		error = got_object_open_as_commit(&commit, repo,
12607 		    head_commit_id);
12608 		if (error)
12609 			goto done;
12610 		parent_ids = got_object_commit_get_parent_ids(commit);
12611 		pid = STAILQ_FIRST(parent_ids);
12612 		if (pid == NULL) {
12613 			error = got_error(GOT_ERR_EMPTY_HISTEDIT);
12614 			goto done;
12615 		}
12616 		error = collect_commits(&commits, head_commit_id, &pid->id,
12617 		    base_commit_id, got_worktree_get_path_prefix(worktree),
12618 		    GOT_ERR_HISTEDIT_PATH, repo);
12619 		got_object_commit_close(commit);
12620 		commit = NULL;
12621 		if (error)
12622 			goto done;
12623 	} else {
12624 		if (edit_in_progress) {
12625 			error = got_error(GOT_ERR_HISTEDIT_BUSY);
12626 			goto done;
12627 		}
12628 
12629 		error = got_ref_open(&branch, repo,
12630 		    got_worktree_get_head_ref_name(worktree), 0);
12631 		if (error != NULL)
12632 			goto done;
12633 
12634 		if (strncmp(got_ref_get_name(branch), "refs/heads/", 11) != 0) {
12635 			error = got_error_msg(GOT_ERR_COMMIT_BRANCH,
12636 			    "will not edit commit history of a branch outside "
12637 			    "the \"refs/heads/\" reference namespace");
12638 			goto done;
12639 		}
12640 
12641 		error = got_ref_resolve(&head_commit_id, repo, branch);
12642 		got_ref_close(branch);
12643 		branch = NULL;
12644 		if (error)
12645 			goto done;
12646 
12647 		error = got_object_open_as_commit(&commit, repo,
12648 		    head_commit_id);
12649 		if (error)
12650 			goto done;
12651 		parent_ids = got_object_commit_get_parent_ids(commit);
12652 		pid = STAILQ_FIRST(parent_ids);
12653 		if (pid == NULL) {
12654 			error = got_error(GOT_ERR_EMPTY_HISTEDIT);
12655 			goto done;
12656 		}
12657 		error = collect_commits(&commits, head_commit_id, &pid->id,
12658 		    got_worktree_get_base_commit_id(worktree),
12659 		    got_worktree_get_path_prefix(worktree),
12660 		    GOT_ERR_HISTEDIT_PATH, repo);
12661 		got_object_commit_close(commit);
12662 		commit = NULL;
12663 		if (error)
12664 			goto done;
12665 
12666 		if (STAILQ_EMPTY(&commits)) {
12667 			error = got_error(GOT_ERR_EMPTY_HISTEDIT);
12668 			goto done;
12669 		}
12670 
12671 		error = got_worktree_histedit_prepare(&tmp_branch, &branch,
12672 		    &base_commit_id, &fileindex, worktree, repo);
12673 		if (error)
12674 			goto done;
12675 
12676 		if (edit_script_path) {
12677 			error = histedit_load_list(&histedit_cmds,
12678 			    edit_script_path, repo);
12679 			if (error) {
12680 				got_worktree_histedit_abort(worktree, fileindex,
12681 				    repo, branch, base_commit_id,
12682 				    abort_progress, &upa);
12683 				print_merge_progress_stats(&upa);
12684 				goto done;
12685 			}
12686 		} else {
12687 			const char *branch_name;
12688 			branch_name = got_ref_get_symref_target(branch);
12689 			if (strncmp(branch_name, "refs/heads/", 11) == 0)
12690 				branch_name += 11;
12691 			error = histedit_edit_script(&histedit_cmds, &commits,
12692 			    branch_name, edit_logmsg_only, fold_only,
12693 			    drop_only, edit_only, repo);
12694 			if (error) {
12695 				got_worktree_histedit_abort(worktree, fileindex,
12696 				    repo, branch, base_commit_id,
12697 				    abort_progress, &upa);
12698 				print_merge_progress_stats(&upa);
12699 				goto done;
12700 			}
12701 
12702 		}
12703 
12704 		error = histedit_save_list(&histedit_cmds, worktree,
12705 		    repo);
12706 		if (error) {
12707 			got_worktree_histedit_abort(worktree, fileindex,
12708 			    repo, branch, base_commit_id,
12709 			    abort_progress, &upa);
12710 			print_merge_progress_stats(&upa);
12711 			goto done;
12712 		}
12713 
12714 	}
12715 
12716 	error = histedit_check_script(&histedit_cmds, &commits, repo);
12717 	if (error)
12718 		goto done;
12719 
12720 	TAILQ_FOREACH(hle, &histedit_cmds, entry) {
12721 		if (resume_commit_id) {
12722 			if (got_object_id_cmp(hle->commit_id,
12723 			    resume_commit_id) != 0)
12724 				continue;
12725 
12726 			resume_commit_id = NULL;
12727 			if (hle->cmd->code == GOT_HISTEDIT_DROP ||
12728 			    hle->cmd->code == GOT_HISTEDIT_FOLD) {
12729 				error = histedit_skip_commit(hle, worktree,
12730 				    repo);
12731 				if (error)
12732 					goto done;
12733 			} else {
12734 				struct got_pathlist_head paths;
12735 				int have_changes = 0;
12736 
12737 				TAILQ_INIT(&paths);
12738 				error = got_pathlist_append(&paths, "", NULL);
12739 				if (error)
12740 					goto done;
12741 				error = got_worktree_status(worktree, &paths,
12742 				    repo, 0, check_local_changes, &have_changes,
12743 				    check_cancelled, NULL);
12744 				got_pathlist_free(&paths,
12745 				    GOT_PATHLIST_FREE_NONE);
12746 				if (error) {
12747 					if (error->code != GOT_ERR_CANCELLED)
12748 						goto done;
12749 					if (sigint_received || sigpipe_received)
12750 						goto done;
12751 				}
12752 				if (have_changes) {
12753 					error = histedit_commit(NULL, worktree,
12754 					    fileindex, tmp_branch, hle,
12755 					    committer, allow_conflict, repo);
12756 					if (error)
12757 						goto done;
12758 				} else {
12759 					error = got_object_open_as_commit(
12760 					    &commit, repo, hle->commit_id);
12761 					if (error)
12762 						goto done;
12763 					error = show_histedit_progress(commit,
12764 					    hle, NULL);
12765 					got_object_commit_close(commit);
12766 					commit = NULL;
12767 					if (error)
12768 						goto done;
12769 				}
12770 			}
12771 			continue;
12772 		}
12773 
12774 		if (hle->cmd->code == GOT_HISTEDIT_DROP) {
12775 			error = histedit_skip_commit(hle, worktree, repo);
12776 			if (error)
12777 				goto done;
12778 			continue;
12779 		}
12780 
12781 		error = got_object_open_as_commit(&commit, repo,
12782 		    hle->commit_id);
12783 		if (error)
12784 			goto done;
12785 		parent_ids = got_object_commit_get_parent_ids(commit);
12786 		pid = STAILQ_FIRST(parent_ids);
12787 
12788 		error = got_worktree_histedit_merge_files(&merged_paths,
12789 		    worktree, fileindex, &pid->id, hle->commit_id, repo,
12790 		    update_progress, &upa, check_cancelled, NULL);
12791 		if (error)
12792 			goto done;
12793 		got_object_commit_close(commit);
12794 		commit = NULL;
12795 
12796 		print_merge_progress_stats(&upa);
12797 		if (upa.conflicts > 0 || upa.missing > 0 ||
12798 		    upa.not_deleted > 0 || upa.unversioned > 0) {
12799 			if (upa.conflicts > 0) {
12800 				error = show_rebase_merge_conflict(
12801 				    hle->commit_id, repo);
12802 				if (error)
12803 					goto done;
12804 			}
12805 			got_pathlist_free(&merged_paths, GOT_PATHLIST_FREE_PATH);
12806 			break;
12807 		}
12808 
12809 		if (hle->cmd->code == GOT_HISTEDIT_EDIT) {
12810 			char *id_str;
12811 			error = got_object_id_str(&id_str, hle->commit_id);
12812 			if (error)
12813 				goto done;
12814 			printf("Stopping histedit for amending commit %s\n",
12815 			    id_str);
12816 			free(id_str);
12817 			got_pathlist_free(&merged_paths, GOT_PATHLIST_FREE_PATH);
12818 			error = got_worktree_histedit_postpone(worktree,
12819 			    fileindex);
12820 			goto done;
12821 		}
12822 
12823 		if (hle->cmd->code == GOT_HISTEDIT_FOLD) {
12824 			error = histedit_skip_commit(hle, worktree, repo);
12825 			if (error)
12826 				goto done;
12827 			continue;
12828 		}
12829 
12830 		error = histedit_commit(&merged_paths, worktree, fileindex,
12831 		    tmp_branch, hle, committer, allow_conflict, repo);
12832 		got_pathlist_free(&merged_paths, GOT_PATHLIST_FREE_PATH);
12833 		if (error)
12834 			goto done;
12835 	}
12836 
12837 	if (upa.conflicts > 0 || upa.missing > 0 ||
12838 	    upa.not_deleted > 0 || upa.unversioned > 0) {
12839 		error = got_worktree_histedit_postpone(worktree, fileindex);
12840 		if (error)
12841 			goto done;
12842 		if (upa.conflicts > 0 && upa.missing == 0 &&
12843 		    upa.not_deleted == 0 && upa.unversioned == 0) {
12844 			error = got_error_msg(GOT_ERR_CONFLICTS,
12845 			    "conflicts must be resolved before histedit "
12846 			    "can continue");
12847 		} else if (upa.conflicts > 0) {
12848 			error = got_error_msg(GOT_ERR_CONFLICTS,
12849 			    "conflicts must be resolved before histedit "
12850 			    "can continue; changes destined for some "
12851 			    "files were not yet merged and should be "
12852 			    "merged manually if required before the "
12853 			    "histedit operation is continued");
12854 		} else {
12855 			error = got_error_msg(GOT_ERR_CONFLICTS,
12856 			    "changes destined for some files were not "
12857 			    "yet merged and should be merged manually "
12858 			    "if required before the histedit operation "
12859 			    "is continued");
12860 		}
12861 	} else
12862 		error = histedit_complete(worktree, fileindex, tmp_branch,
12863 		    branch, repo);
12864 done:
12865 	free(cwd);
12866 	free(committer);
12867 	free(gitconfig_path);
12868 	got_object_id_queue_free(&commits);
12869 	histedit_free_list(&histedit_cmds);
12870 	free(head_commit_id);
12871 	free(base_commit_id);
12872 	free(resume_commit_id);
12873 	if (commit)
12874 		got_object_commit_close(commit);
12875 	if (branch)
12876 		got_ref_close(branch);
12877 	if (tmp_branch)
12878 		got_ref_close(tmp_branch);
12879 	if (worktree)
12880 		got_worktree_close(worktree);
12881 	if (repo) {
12882 		const struct got_error *close_err = got_repo_close(repo);
12883 		if (error == NULL)
12884 			error = close_err;
12885 	}
12886 	if (pack_fds) {
12887 		const struct got_error *pack_err =
12888 		    got_repo_pack_fds_close(pack_fds);
12889 		if (error == NULL)
12890 			error = pack_err;
12891 	}
12892 	return error;
12893 }
12894 
12895 __dead static void
12896 usage_integrate(void)
12897 {
12898 	fprintf(stderr, "usage: %s integrate branch\n", getprogname());
12899 	exit(1);
12900 }
12901 
12902 static const struct got_error *
12903 cmd_integrate(int argc, char *argv[])
12904 {
12905 	const struct got_error *error = NULL;
12906 	struct got_repository *repo = NULL;
12907 	struct got_worktree *worktree = NULL;
12908 	char *cwd = NULL, *refname = NULL, *base_refname = NULL;
12909 	const char *branch_arg = NULL;
12910 	struct got_reference *branch_ref = NULL, *base_branch_ref = NULL;
12911 	struct got_fileindex *fileindex = NULL;
12912 	struct got_object_id *commit_id = NULL, *base_commit_id = NULL;
12913 	int ch;
12914 	struct got_update_progress_arg upa;
12915 	int *pack_fds = NULL;
12916 
12917 #ifndef PROFILE
12918 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
12919 	    "unveil", NULL) == -1)
12920 		err(1, "pledge");
12921 #endif
12922 
12923 	while ((ch = getopt(argc, argv, "")) != -1) {
12924 		switch (ch) {
12925 		default:
12926 			usage_integrate();
12927 			/* NOTREACHED */
12928 		}
12929 	}
12930 
12931 	argc -= optind;
12932 	argv += optind;
12933 
12934 	if (argc != 1)
12935 		usage_integrate();
12936 	branch_arg = argv[0];
12937 
12938 	cwd = getcwd(NULL, 0);
12939 	if (cwd == NULL) {
12940 		error = got_error_from_errno("getcwd");
12941 		goto done;
12942 	}
12943 
12944 	error = got_repo_pack_fds_open(&pack_fds);
12945 	if (error != NULL)
12946 		goto done;
12947 
12948 	error = got_worktree_open(&worktree, cwd);
12949 	if (error) {
12950 		if (error->code == GOT_ERR_NOT_WORKTREE)
12951 			error = wrap_not_worktree_error(error, "integrate",
12952 			    cwd);
12953 		goto done;
12954 	}
12955 
12956 	error = check_rebase_or_histedit_in_progress(worktree);
12957 	if (error)
12958 		goto done;
12959 
12960 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
12961 	    NULL, pack_fds);
12962 	if (error != NULL)
12963 		goto done;
12964 
12965 	error = apply_unveil(got_repo_get_path(repo), 0,
12966 	    got_worktree_get_root_path(worktree));
12967 	if (error)
12968 		goto done;
12969 
12970 	error = check_merge_in_progress(worktree, repo);
12971 	if (error)
12972 		goto done;
12973 
12974 	if (asprintf(&refname, "refs/heads/%s", branch_arg) == -1) {
12975 		error = got_error_from_errno("asprintf");
12976 		goto done;
12977 	}
12978 
12979 	error = got_worktree_integrate_prepare(&fileindex, &branch_ref,
12980 	    &base_branch_ref, worktree, refname, repo);
12981 	if (error)
12982 		goto done;
12983 
12984 	refname = strdup(got_ref_get_name(branch_ref));
12985 	if (refname == NULL) {
12986 		error = got_error_from_errno("strdup");
12987 		got_worktree_integrate_abort(worktree, fileindex, repo,
12988 		    branch_ref, base_branch_ref);
12989 		goto done;
12990 	}
12991 	base_refname = strdup(got_ref_get_name(base_branch_ref));
12992 	if (base_refname == NULL) {
12993 		error = got_error_from_errno("strdup");
12994 		got_worktree_integrate_abort(worktree, fileindex, repo,
12995 		    branch_ref, base_branch_ref);
12996 		goto done;
12997 	}
12998 	if (strncmp(base_refname, "refs/heads/", 11) != 0) {
12999 		error = got_error(GOT_ERR_INTEGRATE_BRANCH);
13000 		got_worktree_integrate_abort(worktree, fileindex, repo,
13001 		    branch_ref, base_branch_ref);
13002 		goto done;
13003 	}
13004 
13005 	error = got_ref_resolve(&commit_id, repo, branch_ref);
13006 	if (error)
13007 		goto done;
13008 
13009 	error = got_ref_resolve(&base_commit_id, repo, base_branch_ref);
13010 	if (error)
13011 		goto done;
13012 
13013 	if (got_object_id_cmp(commit_id, base_commit_id) == 0) {
13014 		error = got_error_msg(GOT_ERR_SAME_BRANCH,
13015 		    "specified branch has already been integrated");
13016 		got_worktree_integrate_abort(worktree, fileindex, repo,
13017 		    branch_ref, base_branch_ref);
13018 		goto done;
13019 	}
13020 
13021 	error = check_linear_ancestry(commit_id, base_commit_id, 1, repo);
13022 	if (error) {
13023 		if (error->code == GOT_ERR_ANCESTRY)
13024 			error = got_error(GOT_ERR_REBASE_REQUIRED);
13025 		got_worktree_integrate_abort(worktree, fileindex, repo,
13026 		    branch_ref, base_branch_ref);
13027 		goto done;
13028 	}
13029 
13030 	memset(&upa, 0, sizeof(upa));
13031 	error = got_worktree_integrate_continue(worktree, fileindex, repo,
13032 	    branch_ref, base_branch_ref, update_progress, &upa,
13033 	    check_cancelled, NULL);
13034 	if (error)
13035 		goto done;
13036 
13037 	printf("Integrated %s into %s\n", refname, base_refname);
13038 	print_update_progress_stats(&upa);
13039 done:
13040 	if (repo) {
13041 		const struct got_error *close_err = got_repo_close(repo);
13042 		if (error == NULL)
13043 			error = close_err;
13044 	}
13045 	if (worktree)
13046 		got_worktree_close(worktree);
13047 	if (pack_fds) {
13048 		const struct got_error *pack_err =
13049 		    got_repo_pack_fds_close(pack_fds);
13050 		if (error == NULL)
13051 			error = pack_err;
13052 	}
13053 	free(cwd);
13054 	free(base_commit_id);
13055 	free(commit_id);
13056 	free(refname);
13057 	free(base_refname);
13058 	return error;
13059 }
13060 
13061 __dead static void
13062 usage_merge(void)
13063 {
13064 	fprintf(stderr, "usage: %s merge [-aCcn] [branch]\n", getprogname());
13065 	exit(1);
13066 }
13067 
13068 static const struct got_error *
13069 cmd_merge(int argc, char *argv[])
13070 {
13071 	const struct got_error *error = NULL;
13072 	struct got_worktree *worktree = NULL;
13073 	struct got_repository *repo = NULL;
13074 	struct got_fileindex *fileindex = NULL;
13075 	char *cwd = NULL, *id_str = NULL, *author = NULL;
13076 	char *gitconfig_path = NULL;
13077 	struct got_reference *branch = NULL, *wt_branch = NULL;
13078 	struct got_object_id *branch_tip = NULL, *yca_id = NULL;
13079 	struct got_object_id *wt_branch_tip = NULL;
13080 	int ch, merge_in_progress = 0, abort_merge = 0, continue_merge = 0;
13081 	int allow_conflict = 0, interrupt_merge = 0;
13082 	struct got_update_progress_arg upa;
13083 	struct got_object_id *merge_commit_id = NULL;
13084 	char *branch_name = NULL;
13085 	int *pack_fds = NULL;
13086 
13087 	memset(&upa, 0, sizeof(upa));
13088 
13089 #ifndef PROFILE
13090 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
13091 	    "unveil", NULL) == -1)
13092 		err(1, "pledge");
13093 #endif
13094 
13095 	while ((ch = getopt(argc, argv, "aCcn")) != -1) {
13096 		switch (ch) {
13097 		case 'a':
13098 			abort_merge = 1;
13099 			break;
13100 		case 'C':
13101 			allow_conflict = 1;
13102 		case 'c':
13103 			continue_merge = 1;
13104 			break;
13105 		case 'n':
13106 			interrupt_merge = 1;
13107 			break;
13108 		default:
13109 			usage_merge();
13110 			/* NOTREACHED */
13111 		}
13112 	}
13113 
13114 	argc -= optind;
13115 	argv += optind;
13116 
13117 	if (allow_conflict) {
13118 		if (abort_merge)
13119 			option_conflict('a', 'C');
13120 		if (!continue_merge)
13121 			errx(1, "-C option requires -c");
13122 	}
13123 	if (abort_merge && continue_merge)
13124 		option_conflict('a', 'c');
13125 	if (abort_merge || continue_merge) {
13126 		if (argc != 0)
13127 			usage_merge();
13128 	} else if (argc != 1)
13129 		usage_merge();
13130 
13131 	cwd = getcwd(NULL, 0);
13132 	if (cwd == NULL) {
13133 		error = got_error_from_errno("getcwd");
13134 		goto done;
13135 	}
13136 
13137 	error = got_repo_pack_fds_open(&pack_fds);
13138 	if (error != NULL)
13139 		goto done;
13140 
13141 	error = got_worktree_open(&worktree, cwd);
13142 	if (error) {
13143 		if (error->code == GOT_ERR_NOT_WORKTREE)
13144 			error = wrap_not_worktree_error(error,
13145 			    "merge", cwd);
13146 		goto done;
13147 	}
13148 
13149 	error = get_gitconfig_path(&gitconfig_path);
13150 	if (error)
13151 		goto done;
13152 	error = got_repo_open(&repo,
13153 	    worktree ? got_worktree_get_repo_path(worktree) : cwd,
13154 	    gitconfig_path, pack_fds);
13155 	if (error != NULL)
13156 		goto done;
13157 
13158 	if (worktree != NULL) {
13159 		error = worktree_has_logmsg_ref("merge", worktree, repo);
13160 		if (error)
13161 			goto done;
13162 	}
13163 
13164 	error = apply_unveil(got_repo_get_path(repo), 0,
13165 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
13166 	if (error)
13167 		goto done;
13168 
13169 	error = check_rebase_or_histedit_in_progress(worktree);
13170 	if (error)
13171 		goto done;
13172 
13173 	error = got_worktree_merge_in_progress(&merge_in_progress, worktree,
13174 	    repo);
13175 	if (error)
13176 		goto done;
13177 
13178 	if (abort_merge) {
13179 		if (!merge_in_progress) {
13180 			error = got_error(GOT_ERR_NOT_MERGING);
13181 			goto done;
13182 		}
13183 		error = got_worktree_merge_continue(&branch_name,
13184 		    &branch_tip, &fileindex, worktree, repo);
13185 		if (error)
13186 			goto done;
13187 		error = got_worktree_merge_abort(worktree, fileindex, repo,
13188 		    abort_progress, &upa);
13189 		if (error)
13190 			goto done;
13191 		printf("Merge of %s aborted\n", branch_name);
13192 		goto done; /* nothing else to do */
13193 	}
13194 
13195 	error = get_author(&author, repo, worktree);
13196 	if (error)
13197 		goto done;
13198 
13199 	if (continue_merge) {
13200 		if (!merge_in_progress) {
13201 			error = got_error(GOT_ERR_NOT_MERGING);
13202 			goto done;
13203 		}
13204 		error = got_worktree_merge_continue(&branch_name,
13205 		    &branch_tip, &fileindex, worktree, repo);
13206 		if (error)
13207 			goto done;
13208 	} else {
13209 		error = got_ref_open(&branch, repo, argv[0], 0);
13210 		if (error != NULL)
13211 			goto done;
13212 		branch_name = strdup(got_ref_get_name(branch));
13213 		if (branch_name == NULL) {
13214 			error = got_error_from_errno("strdup");
13215 			goto done;
13216 		}
13217 		error = got_ref_resolve(&branch_tip, repo, branch);
13218 		if (error)
13219 			goto done;
13220 	}
13221 
13222 	error = got_ref_open(&wt_branch, repo,
13223 	    got_worktree_get_head_ref_name(worktree), 0);
13224 	if (error)
13225 		goto done;
13226 	error = got_ref_resolve(&wt_branch_tip, repo, wt_branch);
13227 	if (error)
13228 		goto done;
13229 	error = got_commit_graph_find_youngest_common_ancestor(&yca_id,
13230 	    wt_branch_tip, branch_tip, 0, repo,
13231 	    check_cancelled, NULL);
13232 	if (error && error->code != GOT_ERR_ANCESTRY)
13233 		goto done;
13234 
13235 	if (!continue_merge) {
13236 		error = check_path_prefix(wt_branch_tip, branch_tip,
13237 		    got_worktree_get_path_prefix(worktree),
13238 		    GOT_ERR_MERGE_PATH, repo);
13239 		if (error)
13240 			goto done;
13241 		if (yca_id) {
13242 			error = check_same_branch(wt_branch_tip, branch,
13243 			    yca_id, repo);
13244 			if (error) {
13245 				if (error->code != GOT_ERR_ANCESTRY)
13246 					goto done;
13247 				error = NULL;
13248 			} else {
13249 				static char msg[512];
13250 				snprintf(msg, sizeof(msg),
13251 				    "cannot create a merge commit because "
13252 				    "%s is based on %s; %s can be integrated "
13253 				    "with 'got integrate' instead", branch_name,
13254 				    got_worktree_get_head_ref_name(worktree),
13255 				    branch_name);
13256 				error = got_error_msg(GOT_ERR_SAME_BRANCH, msg);
13257 				goto done;
13258 			}
13259 		}
13260 		error = got_worktree_merge_prepare(&fileindex, worktree,
13261 		    branch, repo);
13262 		if (error)
13263 			goto done;
13264 
13265 		error = got_worktree_merge_branch(worktree, fileindex,
13266 		    yca_id, branch_tip, repo, update_progress, &upa,
13267 		    check_cancelled, NULL);
13268 		if (error)
13269 			goto done;
13270 		print_merge_progress_stats(&upa);
13271 		if (!upa.did_something) {
13272 			error = got_worktree_merge_abort(worktree, fileindex,
13273 			    repo, abort_progress, &upa);
13274 			if (error)
13275 				goto done;
13276 			printf("Already up-to-date\n");
13277 			goto done;
13278 		}
13279 	}
13280 
13281 	if (interrupt_merge) {
13282 		error = got_worktree_merge_postpone(worktree, fileindex);
13283 		if (error)
13284 			goto done;
13285 		printf("Merge of %s interrupted on request\n", branch_name);
13286 	} else if (upa.conflicts > 0 || upa.missing > 0 ||
13287 	    upa.not_deleted > 0 || upa.unversioned > 0) {
13288 		error = got_worktree_merge_postpone(worktree, fileindex);
13289 		if (error)
13290 			goto done;
13291 		if (upa.conflicts > 0 && upa.missing == 0 &&
13292 		    upa.not_deleted == 0 && upa.unversioned == 0) {
13293 			error = got_error_msg(GOT_ERR_CONFLICTS,
13294 			    "conflicts must be resolved before merging "
13295 			    "can continue");
13296 		} else if (upa.conflicts > 0) {
13297 			error = got_error_msg(GOT_ERR_CONFLICTS,
13298 			    "conflicts must be resolved before merging "
13299 			    "can continue; changes destined for some "
13300 			    "files were not yet merged and "
13301 			    "should be merged manually if required before the "
13302 			    "merge operation is continued");
13303 		} else {
13304 			error = got_error_msg(GOT_ERR_CONFLICTS,
13305 			    "changes destined for some "
13306 			    "files were not yet merged and should be "
13307 			    "merged manually if required before the "
13308 			    "merge operation is continued");
13309 		}
13310 		goto done;
13311 	} else {
13312 		error = got_worktree_merge_commit(&merge_commit_id, worktree,
13313 		    fileindex, author, NULL, 1, branch_tip, branch_name,
13314 		    allow_conflict, repo, continue_merge ? print_status : NULL,
13315 		    NULL);
13316 		if (error)
13317 			goto done;
13318 		error = got_worktree_merge_complete(worktree, fileindex, repo);
13319 		if (error)
13320 			goto done;
13321 		error = got_object_id_str(&id_str, merge_commit_id);
13322 		if (error)
13323 			goto done;
13324 		printf("Merged %s into %s: %s\n", branch_name,
13325 		    got_worktree_get_head_ref_name(worktree),
13326 		    id_str);
13327 
13328 	}
13329 done:
13330 	free(gitconfig_path);
13331 	free(id_str);
13332 	free(merge_commit_id);
13333 	free(author);
13334 	free(branch_tip);
13335 	free(branch_name);
13336 	free(yca_id);
13337 	if (branch)
13338 		got_ref_close(branch);
13339 	if (wt_branch)
13340 		got_ref_close(wt_branch);
13341 	if (worktree)
13342 		got_worktree_close(worktree);
13343 	if (repo) {
13344 		const struct got_error *close_err = got_repo_close(repo);
13345 		if (error == NULL)
13346 			error = close_err;
13347 	}
13348 	if (pack_fds) {
13349 		const struct got_error *pack_err =
13350 		    got_repo_pack_fds_close(pack_fds);
13351 		if (error == NULL)
13352 			error = pack_err;
13353 	}
13354 	return error;
13355 }
13356 
13357 __dead static void
13358 usage_stage(void)
13359 {
13360 	fprintf(stderr, "usage: %s stage [-lpS] [-F response-script] "
13361 	    "[path ...]\n", getprogname());
13362 	exit(1);
13363 }
13364 
13365 static const struct got_error *
13366 print_stage(void *arg, unsigned char status, unsigned char staged_status,
13367     const char *path, struct got_object_id *blob_id,
13368     struct got_object_id *staged_blob_id, struct got_object_id *commit_id,
13369     int dirfd, const char *de_name)
13370 {
13371 	const struct got_error *err = NULL;
13372 	char *id_str = NULL;
13373 
13374 	if (staged_status != GOT_STATUS_ADD &&
13375 	    staged_status != GOT_STATUS_MODIFY &&
13376 	    staged_status != GOT_STATUS_DELETE)
13377 		return NULL;
13378 
13379 	if (staged_status == GOT_STATUS_ADD ||
13380 	    staged_status == GOT_STATUS_MODIFY)
13381 		err = got_object_id_str(&id_str, staged_blob_id);
13382 	else
13383 		err = got_object_id_str(&id_str, blob_id);
13384 	if (err)
13385 		return err;
13386 
13387 	printf("%s %c %s\n", id_str, staged_status, path);
13388 	free(id_str);
13389 	return NULL;
13390 }
13391 
13392 static const struct got_error *
13393 cmd_stage(int argc, char *argv[])
13394 {
13395 	const struct got_error *error = NULL;
13396 	struct got_repository *repo = NULL;
13397 	struct got_worktree *worktree = NULL;
13398 	char *cwd = NULL;
13399 	struct got_pathlist_head paths;
13400 	int ch, list_stage = 0, pflag = 0, allow_bad_symlinks = 0;
13401 	FILE *patch_script_file = NULL;
13402 	const char *patch_script_path = NULL;
13403 	struct choose_patch_arg cpa;
13404 	int *pack_fds = NULL;
13405 
13406 	TAILQ_INIT(&paths);
13407 
13408 #ifndef PROFILE
13409 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
13410 	    "unveil", NULL) == -1)
13411 		err(1, "pledge");
13412 #endif
13413 
13414 	while ((ch = getopt(argc, argv, "F:lpS")) != -1) {
13415 		switch (ch) {
13416 		case 'F':
13417 			patch_script_path = optarg;
13418 			break;
13419 		case 'l':
13420 			list_stage = 1;
13421 			break;
13422 		case 'p':
13423 			pflag = 1;
13424 			break;
13425 		case 'S':
13426 			allow_bad_symlinks = 1;
13427 			break;
13428 		default:
13429 			usage_stage();
13430 			/* NOTREACHED */
13431 		}
13432 	}
13433 
13434 	argc -= optind;
13435 	argv += optind;
13436 
13437 	if (list_stage && (pflag || patch_script_path))
13438 		errx(1, "-l option cannot be used with other options");
13439 	if (patch_script_path && !pflag)
13440 		errx(1, "-F option can only be used together with -p option");
13441 
13442 	cwd = getcwd(NULL, 0);
13443 	if (cwd == NULL) {
13444 		error = got_error_from_errno("getcwd");
13445 		goto done;
13446 	}
13447 
13448 	error = got_repo_pack_fds_open(&pack_fds);
13449 	if (error != NULL)
13450 		goto done;
13451 
13452 	error = got_worktree_open(&worktree, cwd);
13453 	if (error) {
13454 		if (error->code == GOT_ERR_NOT_WORKTREE)
13455 			error = wrap_not_worktree_error(error, "stage", cwd);
13456 		goto done;
13457 	}
13458 
13459 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
13460 	    NULL, pack_fds);
13461 	if (error != NULL)
13462 		goto done;
13463 
13464 	if (patch_script_path) {
13465 		patch_script_file = fopen(patch_script_path, "re");
13466 		if (patch_script_file == NULL) {
13467 			error = got_error_from_errno2("fopen",
13468 			    patch_script_path);
13469 			goto done;
13470 		}
13471 	}
13472 	error = apply_unveil(got_repo_get_path(repo), 0,
13473 	    got_worktree_get_root_path(worktree));
13474 	if (error)
13475 		goto done;
13476 
13477 	error = check_merge_in_progress(worktree, repo);
13478 	if (error)
13479 		goto done;
13480 
13481 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
13482 	if (error)
13483 		goto done;
13484 
13485 	if (list_stage)
13486 		error = got_worktree_status(worktree, &paths, repo, 0,
13487 		    print_stage, NULL, check_cancelled, NULL);
13488 	else {
13489 		cpa.patch_script_file = patch_script_file;
13490 		cpa.action = "stage";
13491 		error = got_worktree_stage(worktree, &paths,
13492 		    pflag ? NULL : print_status, NULL,
13493 		    pflag ? choose_patch : NULL, &cpa,
13494 		    allow_bad_symlinks, repo);
13495 	}
13496 done:
13497 	if (patch_script_file && fclose(patch_script_file) == EOF &&
13498 	    error == NULL)
13499 		error = got_error_from_errno2("fclose", patch_script_path);
13500 	if (repo) {
13501 		const struct got_error *close_err = got_repo_close(repo);
13502 		if (error == NULL)
13503 			error = close_err;
13504 	}
13505 	if (worktree)
13506 		got_worktree_close(worktree);
13507 	if (pack_fds) {
13508 		const struct got_error *pack_err =
13509 		    got_repo_pack_fds_close(pack_fds);
13510 		if (error == NULL)
13511 			error = pack_err;
13512 	}
13513 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_PATH);
13514 	free(cwd);
13515 	return error;
13516 }
13517 
13518 __dead static void
13519 usage_unstage(void)
13520 {
13521 	fprintf(stderr, "usage: %s unstage [-p] [-F response-script] "
13522 	    "[path ...]\n", getprogname());
13523 	exit(1);
13524 }
13525 
13526 
13527 static const struct got_error *
13528 cmd_unstage(int argc, char *argv[])
13529 {
13530 	const struct got_error *error = NULL;
13531 	struct got_repository *repo = NULL;
13532 	struct got_worktree *worktree = NULL;
13533 	char *cwd = NULL;
13534 	struct got_pathlist_head paths;
13535 	int ch, pflag = 0;
13536 	struct got_update_progress_arg upa;
13537 	FILE *patch_script_file = NULL;
13538 	const char *patch_script_path = NULL;
13539 	struct choose_patch_arg cpa;
13540 	int *pack_fds = NULL;
13541 
13542 	TAILQ_INIT(&paths);
13543 
13544 #ifndef PROFILE
13545 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
13546 	    "unveil", NULL) == -1)
13547 		err(1, "pledge");
13548 #endif
13549 
13550 	while ((ch = getopt(argc, argv, "F:p")) != -1) {
13551 		switch (ch) {
13552 		case 'F':
13553 			patch_script_path = optarg;
13554 			break;
13555 		case 'p':
13556 			pflag = 1;
13557 			break;
13558 		default:
13559 			usage_unstage();
13560 			/* NOTREACHED */
13561 		}
13562 	}
13563 
13564 	argc -= optind;
13565 	argv += optind;
13566 
13567 	if (patch_script_path && !pflag)
13568 		errx(1, "-F option can only be used together with -p option");
13569 
13570 	cwd = getcwd(NULL, 0);
13571 	if (cwd == NULL) {
13572 		error = got_error_from_errno("getcwd");
13573 		goto done;
13574 	}
13575 
13576 	error = got_repo_pack_fds_open(&pack_fds);
13577 	if (error != NULL)
13578 		goto done;
13579 
13580 	error = got_worktree_open(&worktree, cwd);
13581 	if (error) {
13582 		if (error->code == GOT_ERR_NOT_WORKTREE)
13583 			error = wrap_not_worktree_error(error, "unstage", cwd);
13584 		goto done;
13585 	}
13586 
13587 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
13588 	    NULL, pack_fds);
13589 	if (error != NULL)
13590 		goto done;
13591 
13592 	if (patch_script_path) {
13593 		patch_script_file = fopen(patch_script_path, "re");
13594 		if (patch_script_file == NULL) {
13595 			error = got_error_from_errno2("fopen",
13596 			    patch_script_path);
13597 			goto done;
13598 		}
13599 	}
13600 
13601 	error = apply_unveil(got_repo_get_path(repo), 0,
13602 	    got_worktree_get_root_path(worktree));
13603 	if (error)
13604 		goto done;
13605 
13606 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
13607 	if (error)
13608 		goto done;
13609 
13610 	cpa.patch_script_file = patch_script_file;
13611 	cpa.action = "unstage";
13612 	memset(&upa, 0, sizeof(upa));
13613 	error = got_worktree_unstage(worktree, &paths, update_progress,
13614 	    &upa, pflag ? choose_patch : NULL, &cpa, repo);
13615 	if (!error)
13616 		print_merge_progress_stats(&upa);
13617 done:
13618 	if (patch_script_file && fclose(patch_script_file) == EOF &&
13619 	    error == NULL)
13620 		error = got_error_from_errno2("fclose", patch_script_path);
13621 	if (repo) {
13622 		const struct got_error *close_err = got_repo_close(repo);
13623 		if (error == NULL)
13624 			error = close_err;
13625 	}
13626 	if (worktree)
13627 		got_worktree_close(worktree);
13628 	if (pack_fds) {
13629 		const struct got_error *pack_err =
13630 		    got_repo_pack_fds_close(pack_fds);
13631 		if (error == NULL)
13632 			error = pack_err;
13633 	}
13634 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_PATH);
13635 	free(cwd);
13636 	return error;
13637 }
13638 
13639 __dead static void
13640 usage_cat(void)
13641 {
13642 	fprintf(stderr, "usage: %s cat [-P] [-c commit] [-r repository-path] "
13643 	    "arg ...\n", getprogname());
13644 	exit(1);
13645 }
13646 
13647 static const struct got_error *
13648 cat_blob(struct got_object_id *id, struct got_repository *repo, FILE *outfile)
13649 {
13650 	const struct got_error *err;
13651 	struct got_blob_object *blob;
13652 	int fd = -1;
13653 
13654 	fd = got_opentempfd();
13655 	if (fd == -1)
13656 		return got_error_from_errno("got_opentempfd");
13657 
13658 	err = got_object_open_as_blob(&blob, repo, id, 8192, fd);
13659 	if (err)
13660 		goto done;
13661 
13662 	err = got_object_blob_dump_to_file(NULL, NULL, NULL, outfile, blob);
13663 done:
13664 	if (fd != -1 && close(fd) == -1 && err == NULL)
13665 		err = got_error_from_errno("close");
13666 	if (blob)
13667 		got_object_blob_close(blob);
13668 	return err;
13669 }
13670 
13671 static const struct got_error *
13672 cat_tree(struct got_object_id *id, struct got_repository *repo, FILE *outfile)
13673 {
13674 	const struct got_error *err;
13675 	struct got_tree_object *tree;
13676 	int nentries, i;
13677 
13678 	err = got_object_open_as_tree(&tree, repo, id);
13679 	if (err)
13680 		return err;
13681 
13682 	nentries = got_object_tree_get_nentries(tree);
13683 	for (i = 0; i < nentries; i++) {
13684 		struct got_tree_entry *te;
13685 		char *id_str;
13686 		if (sigint_received || sigpipe_received)
13687 			break;
13688 		te = got_object_tree_get_entry(tree, i);
13689 		err = got_object_id_str(&id_str, got_tree_entry_get_id(te));
13690 		if (err)
13691 			break;
13692 		fprintf(outfile, "%s %.7o %s\n", id_str,
13693 		    got_tree_entry_get_mode(te),
13694 		    got_tree_entry_get_name(te));
13695 		free(id_str);
13696 	}
13697 
13698 	got_object_tree_close(tree);
13699 	return err;
13700 }
13701 
13702 static const struct got_error *
13703 cat_commit(struct got_object_id *id, struct got_repository *repo, FILE *outfile)
13704 {
13705 	const struct got_error *err;
13706 	struct got_commit_object *commit;
13707 	const struct got_object_id_queue *parent_ids;
13708 	struct got_object_qid *pid;
13709 	char *id_str = NULL;
13710 	const char *logmsg = NULL;
13711 	char gmtoff[6];
13712 
13713 	err = got_object_open_as_commit(&commit, repo, id);
13714 	if (err)
13715 		return err;
13716 
13717 	err = got_object_id_str(&id_str, got_object_commit_get_tree_id(commit));
13718 	if (err)
13719 		goto done;
13720 
13721 	fprintf(outfile, "%s%s\n", GOT_COMMIT_LABEL_TREE, id_str);
13722 	parent_ids = got_object_commit_get_parent_ids(commit);
13723 	fprintf(outfile, "numparents %d\n",
13724 	    got_object_commit_get_nparents(commit));
13725 	STAILQ_FOREACH(pid, parent_ids, entry) {
13726 		char *pid_str;
13727 		err = got_object_id_str(&pid_str, &pid->id);
13728 		if (err)
13729 			goto done;
13730 		fprintf(outfile, "%s%s\n", GOT_COMMIT_LABEL_PARENT, pid_str);
13731 		free(pid_str);
13732 	}
13733 	got_date_format_gmtoff(gmtoff, sizeof(gmtoff),
13734 	    got_object_commit_get_author_gmtoff(commit));
13735 	fprintf(outfile, "%s%s %lld %s\n", GOT_COMMIT_LABEL_AUTHOR,
13736 	    got_object_commit_get_author(commit),
13737 	    (long long)got_object_commit_get_author_time(commit),
13738 	    gmtoff);
13739 
13740 	got_date_format_gmtoff(gmtoff, sizeof(gmtoff),
13741 	    got_object_commit_get_committer_gmtoff(commit));
13742 	fprintf(outfile, "%s%s %lld %s\n", GOT_COMMIT_LABEL_COMMITTER,
13743 	    got_object_commit_get_committer(commit),
13744 	    (long long)got_object_commit_get_committer_time(commit),
13745 	    gmtoff);
13746 
13747 	logmsg = got_object_commit_get_logmsg_raw(commit);
13748 	fprintf(outfile, "messagelen %zd\n", strlen(logmsg));
13749 	fprintf(outfile, "%s", logmsg);
13750 done:
13751 	free(id_str);
13752 	got_object_commit_close(commit);
13753 	return err;
13754 }
13755 
13756 static const struct got_error *
13757 cat_tag(struct got_object_id *id, struct got_repository *repo, FILE *outfile)
13758 {
13759 	const struct got_error *err;
13760 	struct got_tag_object *tag;
13761 	char *id_str = NULL;
13762 	const char *tagmsg = NULL;
13763 	char gmtoff[6];
13764 
13765 	err = got_object_open_as_tag(&tag, repo, id);
13766 	if (err)
13767 		return err;
13768 
13769 	err = got_object_id_str(&id_str, got_object_tag_get_object_id(tag));
13770 	if (err)
13771 		goto done;
13772 
13773 	fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_OBJECT, id_str);
13774 
13775 	switch (got_object_tag_get_object_type(tag)) {
13776 	case GOT_OBJ_TYPE_BLOB:
13777 		fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_TYPE,
13778 		    GOT_OBJ_LABEL_BLOB);
13779 		break;
13780 	case GOT_OBJ_TYPE_TREE:
13781 		fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_TYPE,
13782 		    GOT_OBJ_LABEL_TREE);
13783 		break;
13784 	case GOT_OBJ_TYPE_COMMIT:
13785 		fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_TYPE,
13786 		    GOT_OBJ_LABEL_COMMIT);
13787 		break;
13788 	case GOT_OBJ_TYPE_TAG:
13789 		fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_TYPE,
13790 		    GOT_OBJ_LABEL_TAG);
13791 		break;
13792 	default:
13793 		break;
13794 	}
13795 
13796 	fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_TAG,
13797 	    got_object_tag_get_name(tag));
13798 
13799 	got_date_format_gmtoff(gmtoff, sizeof(gmtoff),
13800 	    got_object_tag_get_tagger_gmtoff(tag));
13801 	fprintf(outfile, "%s%s %lld %s\n", GOT_TAG_LABEL_TAGGER,
13802 	    got_object_tag_get_tagger(tag),
13803 	    (long long)got_object_tag_get_tagger_time(tag),
13804 	    gmtoff);
13805 
13806 	tagmsg = got_object_tag_get_message(tag);
13807 	fprintf(outfile, "messagelen %zd\n", strlen(tagmsg));
13808 	fprintf(outfile, "%s", tagmsg);
13809 done:
13810 	free(id_str);
13811 	got_object_tag_close(tag);
13812 	return err;
13813 }
13814 
13815 static const struct got_error *
13816 cmd_cat(int argc, char *argv[])
13817 {
13818 	const struct got_error *error;
13819 	struct got_repository *repo = NULL;
13820 	struct got_worktree *worktree = NULL;
13821 	char *cwd = NULL, *repo_path = NULL, *label = NULL;
13822 	const char *commit_id_str = NULL;
13823 	struct got_object_id *id = NULL, *commit_id = NULL;
13824 	struct got_commit_object *commit = NULL;
13825 	int ch, obj_type, i, force_path = 0;
13826 	struct got_reflist_head refs;
13827 	int *pack_fds = NULL;
13828 
13829 	TAILQ_INIT(&refs);
13830 
13831 #ifndef PROFILE
13832 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
13833 	    NULL) == -1)
13834 		err(1, "pledge");
13835 #endif
13836 
13837 	while ((ch = getopt(argc, argv, "c:Pr:")) != -1) {
13838 		switch (ch) {
13839 		case 'c':
13840 			commit_id_str = optarg;
13841 			break;
13842 		case 'P':
13843 			force_path = 1;
13844 			break;
13845 		case 'r':
13846 			repo_path = realpath(optarg, NULL);
13847 			if (repo_path == NULL)
13848 				return got_error_from_errno2("realpath",
13849 				    optarg);
13850 			got_path_strip_trailing_slashes(repo_path);
13851 			break;
13852 		default:
13853 			usage_cat();
13854 			/* NOTREACHED */
13855 		}
13856 	}
13857 
13858 	argc -= optind;
13859 	argv += optind;
13860 
13861 	cwd = getcwd(NULL, 0);
13862 	if (cwd == NULL) {
13863 		error = got_error_from_errno("getcwd");
13864 		goto done;
13865 	}
13866 
13867 	error = got_repo_pack_fds_open(&pack_fds);
13868 	if (error != NULL)
13869 		goto done;
13870 
13871 	if (repo_path == NULL) {
13872 		error = got_worktree_open(&worktree, cwd);
13873 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
13874 			goto done;
13875 		if (worktree) {
13876 			repo_path = strdup(
13877 			    got_worktree_get_repo_path(worktree));
13878 			if (repo_path == NULL) {
13879 				error = got_error_from_errno("strdup");
13880 				goto done;
13881 			}
13882 
13883 			/* Release work tree lock. */
13884 			got_worktree_close(worktree);
13885 			worktree = NULL;
13886 		}
13887 	}
13888 
13889 	if (repo_path == NULL) {
13890 		repo_path = strdup(cwd);
13891 		if (repo_path == NULL)
13892 			return got_error_from_errno("strdup");
13893 	}
13894 
13895 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
13896 	free(repo_path);
13897 	if (error != NULL)
13898 		goto done;
13899 
13900 	error = apply_unveil(got_repo_get_path(repo), 1, NULL);
13901 	if (error)
13902 		goto done;
13903 
13904 	error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name, NULL);
13905 	if (error)
13906 		goto done;
13907 
13908 	if (commit_id_str == NULL)
13909 		commit_id_str = GOT_REF_HEAD;
13910 	error = got_repo_match_object_id(&commit_id, NULL,
13911 	    commit_id_str, GOT_OBJ_TYPE_COMMIT, &refs, repo);
13912 	if (error)
13913 		goto done;
13914 
13915 	error = got_object_open_as_commit(&commit, repo, commit_id);
13916 	if (error)
13917 		goto done;
13918 
13919 	for (i = 0; i < argc; i++) {
13920 		if (force_path) {
13921 			error = got_object_id_by_path(&id, repo, commit,
13922 			    argv[i]);
13923 			if (error)
13924 				break;
13925 		} else {
13926 			error = got_repo_match_object_id(&id, &label, argv[i],
13927 			    GOT_OBJ_TYPE_ANY, NULL /* do not resolve tags */,
13928 			    repo);
13929 			if (error) {
13930 				if (error->code != GOT_ERR_BAD_OBJ_ID_STR &&
13931 				    error->code != GOT_ERR_NOT_REF)
13932 					break;
13933 				error = got_object_id_by_path(&id, repo,
13934 				    commit, argv[i]);
13935 				if (error)
13936 					break;
13937 			}
13938 		}
13939 
13940 		error = got_object_get_type(&obj_type, repo, id);
13941 		if (error)
13942 			break;
13943 
13944 		switch (obj_type) {
13945 		case GOT_OBJ_TYPE_BLOB:
13946 			error = cat_blob(id, repo, stdout);
13947 			break;
13948 		case GOT_OBJ_TYPE_TREE:
13949 			error = cat_tree(id, repo, stdout);
13950 			break;
13951 		case GOT_OBJ_TYPE_COMMIT:
13952 			error = cat_commit(id, repo, stdout);
13953 			break;
13954 		case GOT_OBJ_TYPE_TAG:
13955 			error = cat_tag(id, repo, stdout);
13956 			break;
13957 		default:
13958 			error = got_error(GOT_ERR_OBJ_TYPE);
13959 			break;
13960 		}
13961 		if (error)
13962 			break;
13963 		free(label);
13964 		label = NULL;
13965 		free(id);
13966 		id = NULL;
13967 	}
13968 done:
13969 	free(label);
13970 	free(id);
13971 	free(commit_id);
13972 	if (commit)
13973 		got_object_commit_close(commit);
13974 	if (worktree)
13975 		got_worktree_close(worktree);
13976 	if (repo) {
13977 		const struct got_error *close_err = got_repo_close(repo);
13978 		if (error == NULL)
13979 			error = close_err;
13980 	}
13981 	if (pack_fds) {
13982 		const struct got_error *pack_err =
13983 		    got_repo_pack_fds_close(pack_fds);
13984 		if (error == NULL)
13985 			error = pack_err;
13986 	}
13987 
13988 	got_ref_list_free(&refs);
13989 	return error;
13990 }
13991 
13992 __dead static void
13993 usage_info(void)
13994 {
13995 	fprintf(stderr, "usage: %s info [path ...]\n",
13996 	    getprogname());
13997 	exit(1);
13998 }
13999 
14000 static const struct got_error *
14001 print_path_info(void *arg, const char *path, mode_t mode, time_t mtime,
14002     struct got_object_id *blob_id, struct got_object_id *staged_blob_id,
14003     struct got_object_id *commit_id)
14004 {
14005 	const struct got_error *err = NULL;
14006 	char *id_str = NULL;
14007 	char datebuf[128];
14008 	struct tm mytm, *tm;
14009 	struct got_pathlist_head *paths = arg;
14010 	struct got_pathlist_entry *pe;
14011 
14012 	/*
14013 	 * Clear error indication from any of the path arguments which
14014 	 * would cause this file index entry to be displayed.
14015 	 */
14016 	TAILQ_FOREACH(pe, paths, entry) {
14017 		if (got_path_cmp(path, pe->path, strlen(path),
14018 		    pe->path_len) == 0 ||
14019 		    got_path_is_child(path, pe->path, pe->path_len))
14020 			pe->data = NULL; /* no error */
14021 	}
14022 
14023 	printf(GOT_COMMIT_SEP_STR);
14024 	if (S_ISLNK(mode))
14025 		printf("symlink: %s\n", path);
14026 	else if (S_ISREG(mode)) {
14027 		printf("file: %s\n", path);
14028 		printf("mode: %o\n", mode & (S_IRWXU | S_IRWXG | S_IRWXO));
14029 	} else if (S_ISDIR(mode))
14030 		printf("directory: %s\n", path);
14031 	else
14032 		printf("something: %s\n", path);
14033 
14034 	tm = localtime_r(&mtime, &mytm);
14035 	if (tm == NULL)
14036 		return NULL;
14037 	if (strftime(datebuf, sizeof(datebuf), "%c %Z", tm) == 0)
14038 		return got_error(GOT_ERR_NO_SPACE);
14039 	printf("timestamp: %s\n", datebuf);
14040 
14041 	if (blob_id) {
14042 		err = got_object_id_str(&id_str, blob_id);
14043 		if (err)
14044 			return err;
14045 		printf("based on blob: %s\n", id_str);
14046 		free(id_str);
14047 	}
14048 
14049 	if (staged_blob_id) {
14050 		err = got_object_id_str(&id_str, staged_blob_id);
14051 		if (err)
14052 			return err;
14053 		printf("based on staged blob: %s\n", id_str);
14054 		free(id_str);
14055 	}
14056 
14057 	if (commit_id) {
14058 		err = got_object_id_str(&id_str, commit_id);
14059 		if (err)
14060 			return err;
14061 		printf("based on commit: %s\n", id_str);
14062 		free(id_str);
14063 	}
14064 
14065 	return NULL;
14066 }
14067 
14068 static const struct got_error *
14069 cmd_info(int argc, char *argv[])
14070 {
14071 	const struct got_error *error = NULL;
14072 	struct got_worktree *worktree = NULL;
14073 	char *cwd = NULL, *id_str = NULL;
14074 	struct got_pathlist_head paths;
14075 	char *uuidstr = NULL;
14076 	int ch, show_files = 0;
14077 
14078 	TAILQ_INIT(&paths);
14079 
14080 #ifndef PROFILE
14081 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
14082 	    NULL) == -1)
14083 		err(1, "pledge");
14084 #endif
14085 
14086 	while ((ch = getopt(argc, argv, "")) != -1) {
14087 		switch (ch) {
14088 		default:
14089 			usage_info();
14090 			/* NOTREACHED */
14091 		}
14092 	}
14093 
14094 	argc -= optind;
14095 	argv += optind;
14096 
14097 	cwd = getcwd(NULL, 0);
14098 	if (cwd == NULL) {
14099 		error = got_error_from_errno("getcwd");
14100 		goto done;
14101 	}
14102 
14103 	error = got_worktree_open(&worktree, cwd);
14104 	if (error) {
14105 		if (error->code == GOT_ERR_NOT_WORKTREE)
14106 			error = wrap_not_worktree_error(error, "info", cwd);
14107 		goto done;
14108 	}
14109 
14110 #ifndef PROFILE
14111 	/* Remove "wpath cpath proc exec sendfd" promises. */
14112 	if (pledge("stdio rpath flock unveil", NULL) == -1)
14113 		err(1, "pledge");
14114 #endif
14115 	error = apply_unveil(NULL, 0, got_worktree_get_root_path(worktree));
14116 	if (error)
14117 		goto done;
14118 
14119 	if (argc >= 1) {
14120 		error = get_worktree_paths_from_argv(&paths, argc, argv,
14121 		    worktree);
14122 		if (error)
14123 			goto done;
14124 		show_files = 1;
14125 	}
14126 
14127 	error = got_object_id_str(&id_str,
14128 	    got_worktree_get_base_commit_id(worktree));
14129 	if (error)
14130 		goto done;
14131 
14132 	error = got_worktree_get_uuid(&uuidstr, worktree);
14133 	if (error)
14134 		goto done;
14135 
14136 	printf("work tree: %s\n", got_worktree_get_root_path(worktree));
14137 	printf("work tree base commit: %s\n", id_str);
14138 	printf("work tree path prefix: %s\n",
14139 	    got_worktree_get_path_prefix(worktree));
14140 	printf("work tree branch reference: %s\n",
14141 	    got_worktree_get_head_ref_name(worktree));
14142 	printf("work tree UUID: %s\n", uuidstr);
14143 	printf("repository: %s\n", got_worktree_get_repo_path(worktree));
14144 
14145 	if (show_files) {
14146 		struct got_pathlist_entry *pe;
14147 		TAILQ_FOREACH(pe, &paths, entry) {
14148 			if (pe->path_len == 0)
14149 				continue;
14150 			/*
14151 			 * Assume this path will fail. This will be corrected
14152 			 * in print_path_info() in case the path does suceeed.
14153 			 */
14154 			pe->data = (void *)got_error(GOT_ERR_BAD_PATH);
14155 		}
14156 		error = got_worktree_path_info(worktree, &paths,
14157 		    print_path_info, &paths, check_cancelled, NULL);
14158 		if (error)
14159 			goto done;
14160 		TAILQ_FOREACH(pe, &paths, entry) {
14161 			if (pe->data != NULL) {
14162 				const struct got_error *perr;
14163 
14164 				perr = pe->data;
14165 				error = got_error_fmt(perr->code, "%s",
14166 				    pe->path);
14167 				break;
14168 			}
14169 		}
14170 	}
14171 done:
14172 	if (worktree)
14173 		got_worktree_close(worktree);
14174 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_PATH);
14175 	free(cwd);
14176 	free(id_str);
14177 	free(uuidstr);
14178 	return error;
14179 }