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