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