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 "got_compat.h"
20 
21 #include <sys/queue.h>
22 #include <sys/time.h>
23 #include <sys/types.h>
24 #include <sys/stat.h>
25 #include <sys/wait.h>
26 
27 #include <err.h>
28 #include <errno.h>
29 #include <fcntl.h>
30 #include <limits.h>
31 #include <locale.h>
32 #include <ctype.h>
33 #include <signal.h>
34 #include <stdio.h>
35 #include <stdlib.h>
36 #include <string.h>
37 #include <unistd.h>
38 #include <libgen.h>
39 #include <time.h>
40 #include <paths.h>
41 #include <regex.h>
42 #include <getopt.h>
43 
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 			fflush(stdout);
268 			fprintf(stderr, "%s: %s\n", getprogname(), error->msg);
269 			return 1;
270 		}
271 
272 		return 0;
273 	}
274 
275 	fprintf(stderr, "%s: unknown command '%s'\n", getprogname(), argv[0]);
276 	list_commands(stderr);
277 	return 1;
278 }
279 
280 __dead static void
281 usage(int hflag, int status)
282 {
283 	FILE *fp = (status == 0) ? stdout : stderr;
284 
285 	fprintf(fp, "usage: %s [-hV] command [arg ...]\n",
286 	    getprogname());
287 	if (hflag)
288 		list_commands(fp);
289 	exit(status);
290 }
291 
292 static const struct got_error *
293 get_editor(char **abspath)
294 {
295 	const struct got_error *err = NULL;
296 	const char *editor;
297 
298 	*abspath = NULL;
299 
300 	editor = getenv("VISUAL");
301 	if (editor == NULL)
302 		editor = getenv("EDITOR");
303 
304 	if (editor) {
305 		err = got_path_find_prog(abspath, editor);
306 		if (err)
307 			return err;
308 	}
309 
310 	if (*abspath == NULL) {
311 		*abspath = strdup("/usr/bin/vi");
312 		if (*abspath == NULL)
313 			return got_error_from_errno("strdup");
314 	}
315 
316 	return NULL;
317 }
318 
319 static const struct got_error *
320 apply_unveil(const char *repo_path, int repo_read_only,
321     const char *worktree_path)
322 {
323 	const struct got_error *err;
324 
325 #ifdef PROFILE
326 	if (unveil("gmon.out", "rwc") != 0)
327 		return got_error_from_errno2("unveil", "gmon.out");
328 #endif
329 	if (repo_path && unveil(repo_path, repo_read_only ? "r" : "rwc") != 0)
330 		return got_error_from_errno2("unveil", repo_path);
331 
332 	if (worktree_path && unveil(worktree_path, "rwc") != 0)
333 		return got_error_from_errno2("unveil", worktree_path);
334 
335 	if (unveil(GOT_TMPDIR_STR, "rwc") != 0)
336 		return got_error_from_errno2("unveil", GOT_TMPDIR_STR);
337 
338 	err = got_privsep_unveil_exec_helpers();
339 	if (err != NULL)
340 		return err;
341 
342 	if (unveil(NULL, NULL) != 0)
343 		return got_error_from_errno("unveil");
344 
345 	return NULL;
346 }
347 
348 __dead static void
349 usage_import(void)
350 {
351 	fprintf(stderr, "usage: %s import [-b branch] [-I pattern] [-m message] "
352 	    "[-r repository-path] directory\n", getprogname());
353 	exit(1);
354 }
355 
356 static int
357 spawn_editor(const char *editor, const char *file)
358 {
359 	pid_t pid;
360 	sig_t sighup, sigint, sigquit;
361 	int st = -1;
362 
363 	sighup = signal(SIGHUP, SIG_IGN);
364 	sigint = signal(SIGINT, SIG_IGN);
365 	sigquit = signal(SIGQUIT, SIG_IGN);
366 
367 	switch (pid = fork()) {
368 	case -1:
369 		goto doneediting;
370 	case 0:
371 		execl(editor, editor, file, (char *)NULL);
372 		_exit(127);
373 	}
374 
375 	while (waitpid(pid, &st, 0) == -1)
376 		if (errno != EINTR)
377 			break;
378 
379 doneediting:
380 	(void)signal(SIGHUP, sighup);
381 	(void)signal(SIGINT, sigint);
382 	(void)signal(SIGQUIT, sigquit);
383 
384 	if (!WIFEXITED(st)) {
385 		errno = EINTR;
386 		return -1;
387 	}
388 
389 	return WEXITSTATUS(st);
390 }
391 
392 static const struct got_error *
393 read_logmsg(char **logmsg, size_t *len, FILE *fp, size_t filesize)
394 {
395 	const struct got_error *err = NULL;
396 	char *line = NULL;
397 	size_t linesize = 0;
398 
399 	*logmsg = NULL;
400 	*len = 0;
401 
402 	if (fseeko(fp, 0L, SEEK_SET) == -1)
403 		return got_error_from_errno("fseeko");
404 
405 	*logmsg = malloc(filesize + 1);
406 	if (*logmsg == NULL)
407 		return got_error_from_errno("malloc");
408 	(*logmsg)[0] = '\0';
409 
410 	while (getline(&line, &linesize, fp) != -1) {
411 		if (line[0] == '#' || (*len == 0 && line[0] == '\n'))
412 			continue; /* remove comments and leading empty lines */
413 		*len = strlcat(*logmsg, line, filesize + 1);
414 		if (*len >= filesize + 1) {
415 			err = got_error(GOT_ERR_NO_SPACE);
416 			goto done;
417 		}
418 	}
419 	if (ferror(fp)) {
420 		err = got_ferror(fp, GOT_ERR_IO);
421 		goto done;
422 	}
423 
424 	while (*len > 0 && (*logmsg)[*len - 1] == '\n') {
425 		(*logmsg)[*len - 1] = '\0';
426 		(*len)--;
427 	}
428 done:
429 	free(line);
430 	if (err) {
431 		free(*logmsg);
432 		*logmsg = NULL;
433 		*len = 0;
434 	}
435 	return err;
436 }
437 
438 static const struct got_error *
439 edit_logmsg(char **logmsg, const char *editor, const char *logmsg_path,
440     const char *initial_content, size_t initial_content_len,
441     int require_modification)
442 {
443 	const struct got_error *err = NULL;
444 	struct stat st, st2;
445 	FILE *fp = NULL;
446 	size_t logmsg_len;
447 
448 	*logmsg = NULL;
449 
450 	if (stat(logmsg_path, &st) == -1)
451 		return got_error_from_errno2("stat", logmsg_path);
452 
453 	if (spawn_editor(editor, logmsg_path) == -1)
454 		return got_error_from_errno("failed spawning editor");
455 
456 	if (require_modification) {
457 		struct timespec timeout;
458 
459 		timeout.tv_sec = 0;
460 		timeout.tv_nsec = 1;
461 		nanosleep(&timeout,  NULL);
462 	}
463 
464 	if (stat(logmsg_path, &st2) == -1)
465 		return got_error_from_errno("stat");
466 
467 	if (require_modification && st.st_size == st2.st_size &&
468 	    timespeccmp(&st.st_mtim, &st2.st_mtim, ==))
469 		return got_error_msg(GOT_ERR_COMMIT_MSG_EMPTY,
470 		    "no changes made to commit message, aborting");
471 
472 	fp = fopen(logmsg_path, "re");
473 	if (fp == NULL) {
474 		err = got_error_from_errno("fopen");
475 		goto done;
476 	}
477 
478 	/* strip comments and leading/trailing newlines */
479 	err = read_logmsg(logmsg, &logmsg_len, fp, st2.st_size);
480 	if (err)
481 		goto done;
482 	if (logmsg_len == 0) {
483 		err = got_error_msg(GOT_ERR_COMMIT_MSG_EMPTY,
484 		    "commit message cannot be empty, aborting");
485 		goto done;
486 	}
487 done:
488 	if (fp && fclose(fp) == EOF && err == NULL)
489 		err = got_error_from_errno("fclose");
490 	if (err) {
491 		free(*logmsg);
492 		*logmsg = NULL;
493 	}
494 	return err;
495 }
496 
497 static const struct got_error *
498 collect_import_msg(char **logmsg, char **logmsg_path, const char *editor,
499     const char *path_dir, const char *branch_name)
500 {
501 	char *initial_content = NULL;
502 	const struct got_error *err = NULL;
503 	int initial_content_len;
504 	int fd = -1;
505 
506 	initial_content_len = asprintf(&initial_content,
507 	    "\n# %s to be imported to branch %s\n", path_dir,
508 	    branch_name);
509 	if (initial_content_len == -1)
510 		return got_error_from_errno("asprintf");
511 
512 	err = got_opentemp_named_fd(logmsg_path, &fd,
513 	    GOT_TMPDIR_STR "/got-importmsg", "");
514 	if (err)
515 		goto done;
516 
517 	if (write(fd, initial_content, initial_content_len) == -1) {
518 		err = got_error_from_errno2("write", *logmsg_path);
519 		goto done;
520 	}
521 	if (close(fd) == -1) {
522 		err = got_error_from_errno2("close", *logmsg_path);
523 		goto done;
524 	}
525 	fd = -1;
526 
527 	err = edit_logmsg(logmsg, editor, *logmsg_path, initial_content,
528 	    initial_content_len, 1);
529 done:
530 	if (fd != -1 && close(fd) == -1 && err == NULL)
531 		err = got_error_from_errno2("close", *logmsg_path);
532 	free(initial_content);
533 	if (err) {
534 		free(*logmsg_path);
535 		*logmsg_path = NULL;
536 	}
537 	return err;
538 }
539 
540 static const struct got_error *
541 import_progress(void *arg, const char *path)
542 {
543 	printf("A  %s\n", path);
544 	return NULL;
545 }
546 
547 static const struct got_error *
548 valid_author(const char *author)
549 {
550 	const char *email = author;
551 
552 	/*
553 	 * Git' expects the author (or committer) to be in the form
554 	 * "name <email>", which are mostly free form (see the
555 	 * "committer" description in git-fast-import(1)).  We're only
556 	 * doing this to avoid git's object parser breaking on commits
557 	 * we create.
558 	 */
559 
560 	while (*author && *author != '\n' && *author != '<' && *author != '>')
561 		author++;
562 	if (author != email && *author == '<' && *(author - 1) != ' ')
563 		return got_error_fmt(GOT_ERR_COMMIT_BAD_AUTHOR, "%s: space "
564 		    "between author name and email required", email);
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 char *
710 get_signer_id(struct got_repository *repo, struct got_worktree *worktree)
711 {
712 	const char *got_signer_id = NULL;
713 	const struct got_gotconfig *worktree_conf = NULL, *repo_conf = NULL;
714 
715 	if (worktree)
716 		worktree_conf = got_worktree_get_gotconfig(worktree);
717 	repo_conf = got_repo_get_gotconfig(repo);
718 
719 	/*
720 	 * Priority of potential author information sources, from most
721 	 * significant to least significant:
722 	 * 1) work tree's .got/got.conf file
723 	 * 2) repository's got.conf file
724 	 */
725 
726 	if (worktree_conf)
727 		got_signer_id = got_gotconfig_get_signer_id(worktree_conf);
728 	if (got_signer_id == NULL)
729 		got_signer_id = got_gotconfig_get_signer_id(repo_conf);
730 
731 	return got_signer_id;
732 }
733 
734 static const struct got_error *
735 get_gitconfig_path(char **gitconfig_path)
736 {
737 	const char *homedir = getenv("HOME");
738 
739 	*gitconfig_path = NULL;
740 	if (homedir) {
741 		if (asprintf(gitconfig_path, "%s/.gitconfig", homedir) == -1)
742 			return got_error_from_errno("asprintf");
743 
744 	}
745 	return NULL;
746 }
747 
748 static const struct got_error *
749 cmd_import(int argc, char *argv[])
750 {
751 	const struct got_error *error = NULL;
752 	char *path_dir = NULL, *repo_path = NULL, *logmsg = NULL;
753 	char *gitconfig_path = NULL, *editor = NULL, *author = NULL;
754 	const char *branch_name = NULL;
755 	char *id_str = NULL, *logmsg_path = NULL;
756 	char refname[PATH_MAX] = "refs/heads/";
757 	struct got_repository *repo = NULL;
758 	struct got_reference *branch_ref = NULL, *head_ref = NULL;
759 	struct got_object_id *new_commit_id = NULL;
760 	int ch, n = 0;
761 	struct got_pathlist_head ignores;
762 	struct got_pathlist_entry *pe;
763 	int preserve_logmsg = 0;
764 	int *pack_fds = NULL;
765 
766 	TAILQ_INIT(&ignores);
767 
768 #ifndef PROFILE
769 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
770 	    "unveil",
771 	    NULL) == -1)
772 		err(1, "pledge");
773 #endif
774 
775 	while ((ch = getopt(argc, argv, "b:I:m:r:")) != -1) {
776 		switch (ch) {
777 		case 'b':
778 			branch_name = optarg;
779 			break;
780 		case 'I':
781 			if (optarg[0] == '\0')
782 				break;
783 			error = got_pathlist_insert(&pe, &ignores, optarg,
784 			    NULL);
785 			if (error)
786 				goto done;
787 			break;
788 		case 'm':
789 			logmsg = strdup(optarg);
790 			if (logmsg == NULL) {
791 				error = got_error_from_errno("strdup");
792 				goto done;
793 			}
794 			break;
795 		case 'r':
796 			repo_path = realpath(optarg, NULL);
797 			if (repo_path == NULL) {
798 				error = got_error_from_errno2("realpath",
799 				    optarg);
800 				goto done;
801 			}
802 			break;
803 		default:
804 			usage_import();
805 			/* NOTREACHED */
806 		}
807 	}
808 
809 	argc -= optind;
810 	argv += optind;
811 
812 	if (argc != 1)
813 		usage_import();
814 
815 	if (repo_path == NULL) {
816 		repo_path = getcwd(NULL, 0);
817 		if (repo_path == NULL)
818 			return got_error_from_errno("getcwd");
819 	}
820 	got_path_strip_trailing_slashes(repo_path);
821 	error = get_gitconfig_path(&gitconfig_path);
822 	if (error)
823 		goto done;
824 	error = got_repo_pack_fds_open(&pack_fds);
825 	if (error != NULL)
826 		goto done;
827 	error = got_repo_open(&repo, repo_path, gitconfig_path, pack_fds);
828 	if (error)
829 		goto done;
830 
831 	error = get_author(&author, repo, NULL);
832 	if (error)
833 		return error;
834 
835 	/*
836 	 * Don't let the user create a branch name with a leading '-'.
837 	 * While technically a valid reference name, this case is usually
838 	 * an unintended typo.
839 	 */
840 	if (branch_name && branch_name[0] == '-')
841 		return got_error_path(branch_name, GOT_ERR_REF_NAME_MINUS);
842 
843 	error = got_ref_open(&head_ref, repo, GOT_REF_HEAD, 0);
844 	if (error && error->code != GOT_ERR_NOT_REF)
845 		goto done;
846 
847 	if (branch_name)
848 		n = strlcat(refname, branch_name, sizeof(refname));
849 	else if (head_ref && got_ref_is_symbolic(head_ref))
850 		n = strlcpy(refname, got_ref_get_symref_target(head_ref),
851 		    sizeof(refname));
852 	else
853 		n = strlcat(refname, "main", sizeof(refname));
854 	if (n >= sizeof(refname)) {
855 		error = got_error(GOT_ERR_NO_SPACE);
856 		goto done;
857 	}
858 
859 	error = got_ref_open(&branch_ref, repo, refname, 0);
860 	if (error) {
861 		if (error->code != GOT_ERR_NOT_REF)
862 			goto done;
863 	} else {
864 		error = got_error_msg(GOT_ERR_BRANCH_EXISTS,
865 		    "import target branch already exists");
866 		goto done;
867 	}
868 
869 	path_dir = realpath(argv[0], NULL);
870 	if (path_dir == NULL) {
871 		error = got_error_from_errno2("realpath", argv[0]);
872 		goto done;
873 	}
874 	got_path_strip_trailing_slashes(path_dir);
875 
876 	/*
877 	 * unveil(2) traverses exec(2); if an editor is used we have
878 	 * to apply unveil after the log message has been written.
879 	 */
880 	if (logmsg == NULL || strlen(logmsg) == 0) {
881 		error = get_editor(&editor);
882 		if (error)
883 			goto done;
884 		free(logmsg);
885 		error = collect_import_msg(&logmsg, &logmsg_path, editor,
886 		    path_dir, refname);
887 		if (error) {
888 			if (error->code != GOT_ERR_COMMIT_MSG_EMPTY &&
889 			    logmsg_path != NULL)
890 				preserve_logmsg = 1;
891 			goto done;
892 		}
893 	}
894 
895 	if (unveil(path_dir, "r") != 0) {
896 		error = got_error_from_errno2("unveil", path_dir);
897 		if (logmsg_path)
898 			preserve_logmsg = 1;
899 		goto done;
900 	}
901 
902 	error = apply_unveil(got_repo_get_path(repo), 0, NULL);
903 	if (error) {
904 		if (logmsg_path)
905 			preserve_logmsg = 1;
906 		goto done;
907 	}
908 
909 	error = got_repo_import(&new_commit_id, path_dir, logmsg,
910 	    author, &ignores, repo, import_progress, NULL);
911 	if (error) {
912 		if (logmsg_path)
913 			preserve_logmsg = 1;
914 		goto done;
915 	}
916 
917 	error = got_ref_alloc(&branch_ref, refname, new_commit_id);
918 	if (error) {
919 		if (logmsg_path)
920 			preserve_logmsg = 1;
921 		goto done;
922 	}
923 
924 	error = got_ref_write(branch_ref, repo);
925 	if (error) {
926 		if (logmsg_path)
927 			preserve_logmsg = 1;
928 		goto done;
929 	}
930 
931 	error = got_object_id_str(&id_str, new_commit_id);
932 	if (error) {
933 		if (logmsg_path)
934 			preserve_logmsg = 1;
935 		goto done;
936 	}
937 
938 	error = got_ref_open(&head_ref, repo, GOT_REF_HEAD, 0);
939 	if (error) {
940 		if (error->code != GOT_ERR_NOT_REF) {
941 			if (logmsg_path)
942 				preserve_logmsg = 1;
943 			goto done;
944 		}
945 
946 		error = got_ref_alloc_symref(&head_ref, GOT_REF_HEAD,
947 		    branch_ref);
948 		if (error) {
949 			if (logmsg_path)
950 				preserve_logmsg = 1;
951 			goto done;
952 		}
953 
954 		error = got_ref_write(head_ref, repo);
955 		if (error) {
956 			if (logmsg_path)
957 				preserve_logmsg = 1;
958 			goto done;
959 		}
960 	}
961 
962 	printf("Created branch %s with commit %s\n",
963 	    got_ref_get_name(branch_ref), id_str);
964 done:
965 	if (pack_fds) {
966 		const struct got_error *pack_err =
967 		    got_repo_pack_fds_close(pack_fds);
968 		if (error == NULL)
969 			error = pack_err;
970 	}
971 	if (repo) {
972 		const struct got_error *close_err = got_repo_close(repo);
973 		if (error == NULL)
974 			error = close_err;
975 	}
976 	if (preserve_logmsg) {
977 		fprintf(stderr, "%s: log message preserved in %s\n",
978 		    getprogname(), logmsg_path);
979 	} else if (logmsg_path && unlink(logmsg_path) == -1 && error == NULL)
980 		error = got_error_from_errno2("unlink", logmsg_path);
981 	free(logmsg);
982 	free(logmsg_path);
983 	free(repo_path);
984 	free(editor);
985 	free(new_commit_id);
986 	free(id_str);
987 	free(author);
988 	free(gitconfig_path);
989 	if (branch_ref)
990 		got_ref_close(branch_ref);
991 	if (head_ref)
992 		got_ref_close(head_ref);
993 	return error;
994 }
995 
996 __dead static void
997 usage_clone(void)
998 {
999 	fprintf(stderr, "usage: %s clone [-almqv] [-b branch] [-R reference] "
1000 	    "repository-URL [directory]\n", getprogname());
1001 	exit(1);
1002 }
1003 
1004 struct got_fetch_progress_arg {
1005 	char last_scaled_size[FMT_SCALED_STRSIZE];
1006 	int last_p_indexed;
1007 	int last_p_resolved;
1008 	int verbosity;
1009 
1010 	struct got_repository *repo;
1011 
1012 	int create_configs;
1013 	int configs_created;
1014 	struct {
1015 		struct got_pathlist_head *symrefs;
1016 		struct got_pathlist_head *wanted_branches;
1017 		struct got_pathlist_head *wanted_refs;
1018 		const char *proto;
1019 		const char *host;
1020 		const char *port;
1021 		const char *remote_repo_path;
1022 		const char *git_url;
1023 		int fetch_all_branches;
1024 		int mirror_references;
1025 	} config_info;
1026 };
1027 
1028 /* XXX forward declaration */
1029 static const struct got_error *
1030 create_config_files(const char *proto, const char *host, const char *port,
1031     const char *remote_repo_path, const char *git_url, int fetch_all_branches,
1032     int mirror_references, struct got_pathlist_head *symrefs,
1033     struct got_pathlist_head *wanted_branches,
1034     struct got_pathlist_head *wanted_refs, struct got_repository *repo);
1035 
1036 static const struct got_error *
1037 fetch_progress(void *arg, const char *message, off_t packfile_size,
1038     int nobj_total, int nobj_indexed, int nobj_loose, int nobj_resolved)
1039 {
1040 	const struct got_error *err = NULL;
1041 	struct got_fetch_progress_arg *a = arg;
1042 	char scaled_size[FMT_SCALED_STRSIZE];
1043 	int p_indexed, p_resolved;
1044 	int print_size = 0, print_indexed = 0, print_resolved = 0;
1045 
1046 	/*
1047 	 * In order to allow a failed clone to be resumed with 'got fetch'
1048 	 * we try to create configuration files as soon as possible.
1049 	 * Once the server has sent information about its default branch
1050 	 * we have all required information.
1051 	 */
1052 	if (a->create_configs && !a->configs_created &&
1053 	    !TAILQ_EMPTY(a->config_info.symrefs)) {
1054 		err = create_config_files(a->config_info.proto,
1055 		    a->config_info.host, a->config_info.port,
1056 		    a->config_info.remote_repo_path,
1057 		    a->config_info.git_url,
1058 		    a->config_info.fetch_all_branches,
1059 		    a->config_info.mirror_references,
1060 		    a->config_info.symrefs,
1061 		    a->config_info.wanted_branches,
1062 		    a->config_info.wanted_refs, a->repo);
1063 		if (err)
1064 			return err;
1065 		a->configs_created = 1;
1066 	}
1067 
1068 	if (a->verbosity < 0)
1069 		return NULL;
1070 
1071 	if (message && message[0] != '\0') {
1072 		printf("\rserver: %s", message);
1073 		fflush(stdout);
1074 		return NULL;
1075 	}
1076 
1077 	if (packfile_size > 0 || nobj_indexed > 0) {
1078 		if (fmt_scaled(packfile_size, scaled_size) == 0 &&
1079 		    (a->last_scaled_size[0] == '\0' ||
1080 		    strcmp(scaled_size, a->last_scaled_size)) != 0) {
1081 			print_size = 1;
1082 			if (strlcpy(a->last_scaled_size, scaled_size,
1083 			    FMT_SCALED_STRSIZE) >= FMT_SCALED_STRSIZE)
1084 				return got_error(GOT_ERR_NO_SPACE);
1085 		}
1086 		if (nobj_indexed > 0) {
1087 			p_indexed = (nobj_indexed * 100) / nobj_total;
1088 			if (p_indexed != a->last_p_indexed) {
1089 				a->last_p_indexed = p_indexed;
1090 				print_indexed = 1;
1091 				print_size = 1;
1092 			}
1093 		}
1094 		if (nobj_resolved > 0) {
1095 			p_resolved = (nobj_resolved * 100) /
1096 			    (nobj_total - nobj_loose);
1097 			if (p_resolved != a->last_p_resolved) {
1098 				a->last_p_resolved = p_resolved;
1099 				print_resolved = 1;
1100 				print_indexed = 1;
1101 				print_size = 1;
1102 			}
1103 		}
1104 
1105 	}
1106 	if (print_size || print_indexed || print_resolved)
1107 		printf("\r");
1108 	if (print_size)
1109 		printf("%*s fetched", FMT_SCALED_STRSIZE - 2, scaled_size);
1110 	if (print_indexed)
1111 		printf("; indexing %d%%", p_indexed);
1112 	if (print_resolved)
1113 		printf("; resolving deltas %d%%", p_resolved);
1114 	if (print_size || print_indexed || print_resolved)
1115 		fflush(stdout);
1116 
1117 	return NULL;
1118 }
1119 
1120 static const struct got_error *
1121 create_symref(const char *refname, struct got_reference *target_ref,
1122     int verbosity, struct got_repository *repo)
1123 {
1124 	const struct got_error *err;
1125 	struct got_reference *head_symref;
1126 
1127 	err = got_ref_alloc_symref(&head_symref, refname, target_ref);
1128 	if (err)
1129 		return err;
1130 
1131 	err = got_ref_write(head_symref, repo);
1132 	if (err == NULL && verbosity > 0) {
1133 		printf("Created reference %s: %s\n", GOT_REF_HEAD,
1134 		    got_ref_get_name(target_ref));
1135 	}
1136 	got_ref_close(head_symref);
1137 	return err;
1138 }
1139 
1140 static const struct got_error *
1141 list_remote_refs(struct got_pathlist_head *symrefs,
1142     struct got_pathlist_head *refs)
1143 {
1144 	const struct got_error *err;
1145 	struct got_pathlist_entry *pe;
1146 
1147 	TAILQ_FOREACH(pe, symrefs, entry) {
1148 		const char *refname = pe->path;
1149 		const char *targetref = pe->data;
1150 
1151 		printf("%s: %s\n", refname, targetref);
1152 	}
1153 
1154 	TAILQ_FOREACH(pe, refs, entry) {
1155 		const char *refname = pe->path;
1156 		struct got_object_id *id = pe->data;
1157 		char *id_str;
1158 
1159 		err = got_object_id_str(&id_str, id);
1160 		if (err)
1161 			return err;
1162 		printf("%s: %s\n", refname, id_str);
1163 		free(id_str);
1164 	}
1165 
1166 	return NULL;
1167 }
1168 
1169 static const struct got_error *
1170 create_ref(const char *refname, struct got_object_id *id,
1171     int verbosity, struct got_repository *repo)
1172 {
1173 	const struct got_error *err = NULL;
1174 	struct got_reference *ref;
1175 	char *id_str;
1176 
1177 	err = got_object_id_str(&id_str, id);
1178 	if (err)
1179 		return err;
1180 
1181 	err = got_ref_alloc(&ref, refname, id);
1182 	if (err)
1183 		goto done;
1184 
1185 	err = got_ref_write(ref, repo);
1186 	got_ref_close(ref);
1187 
1188 	if (err == NULL && verbosity >= 0)
1189 		printf("Created reference %s: %s\n", refname, id_str);
1190 done:
1191 	free(id_str);
1192 	return err;
1193 }
1194 
1195 static int
1196 match_wanted_ref(const char *refname, const char *wanted_ref)
1197 {
1198 	if (strncmp(refname, "refs/", 5) != 0)
1199 		return 0;
1200 	refname += 5;
1201 
1202 	/*
1203 	 * Prevent fetching of references that won't make any
1204 	 * sense outside of the remote repository's context.
1205 	 */
1206 	if (strncmp(refname, "got/", 4) == 0)
1207 		return 0;
1208 	if (strncmp(refname, "remotes/", 8) == 0)
1209 		return 0;
1210 
1211 	if (strncmp(wanted_ref, "refs/", 5) == 0)
1212 		wanted_ref += 5;
1213 
1214 	/* Allow prefix match. */
1215 	if (got_path_is_child(refname, wanted_ref, strlen(wanted_ref)))
1216 		return 1;
1217 
1218 	/* Allow exact match. */
1219 	return (strcmp(refname, wanted_ref) == 0);
1220 }
1221 
1222 static int
1223 is_wanted_ref(struct got_pathlist_head *wanted_refs, const char *refname)
1224 {
1225 	struct got_pathlist_entry *pe;
1226 
1227 	TAILQ_FOREACH(pe, wanted_refs, entry) {
1228 		if (match_wanted_ref(refname, pe->path))
1229 			return 1;
1230 	}
1231 
1232 	return 0;
1233 }
1234 
1235 static const struct got_error *
1236 create_wanted_ref(const char *refname, struct got_object_id *id,
1237     const char *remote_repo_name, int verbosity, struct got_repository *repo)
1238 {
1239 	const struct got_error *err;
1240 	char *remote_refname;
1241 
1242 	if (strncmp("refs/", refname, 5) == 0)
1243 		refname += 5;
1244 
1245 	if (asprintf(&remote_refname, "refs/remotes/%s/%s",
1246 	    remote_repo_name, refname) == -1)
1247 		return got_error_from_errno("asprintf");
1248 
1249 	err = create_ref(remote_refname, id, verbosity, repo);
1250 	free(remote_refname);
1251 	return err;
1252 }
1253 
1254 static const struct got_error *
1255 create_gotconfig(const char *proto, const char *host, const char *port,
1256     const char *remote_repo_path, const char *default_branch,
1257     int fetch_all_branches, struct got_pathlist_head *wanted_branches,
1258     struct got_pathlist_head *wanted_refs, int mirror_references,
1259     struct got_repository *repo)
1260 {
1261 	const struct got_error *err = NULL;
1262 	char *gotconfig_path = NULL;
1263 	char *gotconfig = NULL;
1264 	FILE *gotconfig_file = NULL;
1265 	const char *branchname = NULL;
1266 	char *branches = NULL, *refs = NULL;
1267 	ssize_t n;
1268 
1269 	if (!fetch_all_branches && !TAILQ_EMPTY(wanted_branches)) {
1270 		struct got_pathlist_entry *pe;
1271 		TAILQ_FOREACH(pe, wanted_branches, entry) {
1272 			char *s;
1273 			branchname = pe->path;
1274 			if (strncmp(branchname, "refs/heads/", 11) == 0)
1275 				branchname += 11;
1276 			if (asprintf(&s, "%s\"%s\" ",
1277 			    branches ? branches : "", branchname) == -1) {
1278 				err = got_error_from_errno("asprintf");
1279 				goto done;
1280 			}
1281 			free(branches);
1282 			branches = s;
1283 		}
1284 	} else if (!fetch_all_branches && default_branch) {
1285 		branchname = default_branch;
1286 		if (strncmp(branchname, "refs/heads/", 11) == 0)
1287 			branchname += 11;
1288 		if (asprintf(&branches, "\"%s\" ", branchname) == -1) {
1289 			err = got_error_from_errno("asprintf");
1290 			goto done;
1291 		}
1292 	}
1293 	if (!TAILQ_EMPTY(wanted_refs)) {
1294 		struct got_pathlist_entry *pe;
1295 		TAILQ_FOREACH(pe, wanted_refs, entry) {
1296 			char *s;
1297 			const char *refname = pe->path;
1298 			if (strncmp(refname, "refs/", 5) == 0)
1299 				branchname += 5;
1300 			if (asprintf(&s, "%s\"%s\" ",
1301 			    refs ? refs : "", refname) == -1) {
1302 				err = got_error_from_errno("asprintf");
1303 				goto done;
1304 			}
1305 			free(refs);
1306 			refs = s;
1307 		}
1308 	}
1309 
1310 	/* Create got.conf(5). */
1311 	gotconfig_path = got_repo_get_path_gotconfig(repo);
1312 	if (gotconfig_path == NULL) {
1313 		err = got_error_from_errno("got_repo_get_path_gotconfig");
1314 		goto done;
1315 	}
1316 	gotconfig_file = fopen(gotconfig_path, "ae");
1317 	if (gotconfig_file == NULL) {
1318 		err = got_error_from_errno2("fopen", gotconfig_path);
1319 		goto done;
1320 	}
1321 	if (asprintf(&gotconfig,
1322 	    "remote \"%s\" {\n"
1323 	    "\tserver %s\n"
1324 	    "\tprotocol %s\n"
1325 	    "%s%s%s"
1326 	    "\trepository \"%s\"\n"
1327 	    "%s%s%s"
1328 	    "%s%s%s"
1329 	    "%s"
1330 	    "%s"
1331 	    "}\n",
1332 	    GOT_FETCH_DEFAULT_REMOTE_NAME, host, proto,
1333 	    port ? "\tport " : "", port ? port : "", port ? "\n" : "",
1334 	    remote_repo_path, branches ? "\tbranch { " : "",
1335 	    branches ? branches : "", branches ? "}\n" : "",
1336 	    refs ? "\treference { " : "", refs ? refs : "", refs ? "}\n" : "",
1337 	    mirror_references ? "\tmirror_references yes\n" : "",
1338 	    fetch_all_branches ? "\tfetch_all_branches yes\n" : "") == -1) {
1339 		err = got_error_from_errno("asprintf");
1340 		goto done;
1341 	}
1342 	n = fwrite(gotconfig, 1, strlen(gotconfig), gotconfig_file);
1343 	if (n != strlen(gotconfig)) {
1344 		err = got_ferror(gotconfig_file, GOT_ERR_IO);
1345 		goto done;
1346 	}
1347 
1348 done:
1349 	if (gotconfig_file && fclose(gotconfig_file) == EOF && err == NULL)
1350 		err = got_error_from_errno2("fclose", gotconfig_path);
1351 	free(gotconfig_path);
1352 	free(branches);
1353 	return err;
1354 }
1355 
1356 static const struct got_error *
1357 create_gitconfig(const char *git_url, const char *default_branch,
1358     int fetch_all_branches, struct got_pathlist_head *wanted_branches,
1359     struct got_pathlist_head *wanted_refs, int mirror_references,
1360     struct got_repository *repo)
1361 {
1362 	const struct got_error *err = NULL;
1363 	char *gitconfig_path = NULL;
1364 	char *gitconfig = NULL;
1365 	FILE *gitconfig_file = NULL;
1366 	char *branches = NULL, *refs = NULL;
1367 	const char *branchname;
1368 	ssize_t n;
1369 
1370 	/* Create a config file Git can understand. */
1371 	gitconfig_path = got_repo_get_path_gitconfig(repo);
1372 	if (gitconfig_path == NULL) {
1373 		err = got_error_from_errno("got_repo_get_path_gitconfig");
1374 		goto done;
1375 	}
1376 	gitconfig_file = fopen(gitconfig_path, "ae");
1377 	if (gitconfig_file == NULL) {
1378 		err = got_error_from_errno2("fopen", gitconfig_path);
1379 		goto done;
1380 	}
1381 	if (fetch_all_branches) {
1382 		if (mirror_references) {
1383 			if (asprintf(&branches,
1384 			    "\tfetch = refs/heads/*:refs/heads/*\n") == -1) {
1385 				err = got_error_from_errno("asprintf");
1386 				goto done;
1387 			}
1388 		} else if (asprintf(&branches,
1389 		    "\tfetch = refs/heads/*:refs/remotes/%s/*\n",
1390 		    GOT_FETCH_DEFAULT_REMOTE_NAME) == -1) {
1391 			err = got_error_from_errno("asprintf");
1392 			goto done;
1393 		}
1394 	} else if (!TAILQ_EMPTY(wanted_branches)) {
1395 		struct got_pathlist_entry *pe;
1396 		TAILQ_FOREACH(pe, wanted_branches, entry) {
1397 			char *s;
1398 			branchname = pe->path;
1399 			if (strncmp(branchname, "refs/heads/", 11) == 0)
1400 				branchname += 11;
1401 			if (mirror_references) {
1402 				if (asprintf(&s,
1403 				    "%s\tfetch = refs/heads/%s:refs/heads/%s\n",
1404 				    branches ? branches : "",
1405 				    branchname, branchname) == -1) {
1406 					err = got_error_from_errno("asprintf");
1407 					goto done;
1408 				}
1409 			} else if (asprintf(&s,
1410 			    "%s\tfetch = refs/heads/%s:refs/remotes/%s/%s\n",
1411 			    branches ? branches : "",
1412 			    branchname, GOT_FETCH_DEFAULT_REMOTE_NAME,
1413 			    branchname) == -1) {
1414 				err = got_error_from_errno("asprintf");
1415 				goto done;
1416 			}
1417 			free(branches);
1418 			branches = s;
1419 		}
1420 	} else {
1421 		/*
1422 		 * If the server specified a default branch, use just that one.
1423 		 * Otherwise fall back to fetching all branches on next fetch.
1424 		 */
1425 		if (default_branch) {
1426 			branchname = default_branch;
1427 			if (strncmp(branchname, "refs/heads/", 11) == 0)
1428 				branchname += 11;
1429 		} else
1430 			branchname = "*"; /* fall back to all branches */
1431 		if (mirror_references) {
1432 			if (asprintf(&branches,
1433 			    "\tfetch = refs/heads/%s:refs/heads/%s\n",
1434 			    branchname, branchname) == -1) {
1435 				err = got_error_from_errno("asprintf");
1436 				goto done;
1437 			}
1438 		} else if (asprintf(&branches,
1439 		    "\tfetch = refs/heads/%s:refs/remotes/%s/%s\n",
1440 		    branchname, GOT_FETCH_DEFAULT_REMOTE_NAME,
1441 		    branchname) == -1) {
1442 			err = got_error_from_errno("asprintf");
1443 			goto done;
1444 		}
1445 	}
1446 	if (!TAILQ_EMPTY(wanted_refs)) {
1447 		struct got_pathlist_entry *pe;
1448 		TAILQ_FOREACH(pe, wanted_refs, entry) {
1449 			char *s;
1450 			const char *refname = pe->path;
1451 			if (strncmp(refname, "refs/", 5) == 0)
1452 				refname += 5;
1453 			if (mirror_references) {
1454 				if (asprintf(&s,
1455 				    "%s\tfetch = refs/%s:refs/%s\n",
1456 				    refs ? refs : "", refname, refname) == -1) {
1457 					err = got_error_from_errno("asprintf");
1458 					goto done;
1459 				}
1460 			} else if (asprintf(&s,
1461 			    "%s\tfetch = refs/%s:refs/remotes/%s/%s\n",
1462 			    refs ? refs : "",
1463 			    refname, GOT_FETCH_DEFAULT_REMOTE_NAME,
1464 			    refname) == -1) {
1465 				err = got_error_from_errno("asprintf");
1466 				goto done;
1467 			}
1468 			free(refs);
1469 			refs = s;
1470 		}
1471 	}
1472 
1473 	if (asprintf(&gitconfig,
1474 	    "[remote \"%s\"]\n"
1475 	    "\turl = %s\n"
1476 	    "%s"
1477 	    "%s"
1478 	    "\tfetch = refs/tags/*:refs/tags/*\n",
1479 	    GOT_FETCH_DEFAULT_REMOTE_NAME, git_url, branches ? branches : "",
1480 	    refs ? refs : "") == -1) {
1481 		err = got_error_from_errno("asprintf");
1482 		goto done;
1483 	}
1484 	n = fwrite(gitconfig, 1, strlen(gitconfig), gitconfig_file);
1485 	if (n != strlen(gitconfig)) {
1486 		err = got_ferror(gitconfig_file, GOT_ERR_IO);
1487 		goto done;
1488 	}
1489 done:
1490 	if (gitconfig_file && fclose(gitconfig_file) == EOF && err == NULL)
1491 		err = got_error_from_errno2("fclose", gitconfig_path);
1492 	free(gitconfig_path);
1493 	free(branches);
1494 	return err;
1495 }
1496 
1497 static const struct got_error *
1498 create_config_files(const char *proto, const char *host, const char *port,
1499     const char *remote_repo_path, const char *git_url, int fetch_all_branches,
1500     int mirror_references, struct got_pathlist_head *symrefs,
1501     struct got_pathlist_head *wanted_branches,
1502     struct got_pathlist_head *wanted_refs, struct got_repository *repo)
1503 {
1504 	const struct got_error *err = NULL;
1505 	const char *default_branch = NULL;
1506 	struct got_pathlist_entry *pe;
1507 
1508 	/*
1509 	 * If we asked for a set of wanted branches then use the first
1510 	 * one of those.
1511 	 */
1512 	if (!TAILQ_EMPTY(wanted_branches)) {
1513 		pe = TAILQ_FIRST(wanted_branches);
1514 		default_branch = pe->path;
1515 	} else {
1516 		/* First HEAD ref listed by server is the default branch. */
1517 		TAILQ_FOREACH(pe, symrefs, entry) {
1518 			const char *refname = pe->path;
1519 			const char *target = pe->data;
1520 
1521 			if (strcmp(refname, GOT_REF_HEAD) != 0)
1522 				continue;
1523 
1524 			default_branch = target;
1525 			break;
1526 		}
1527 	}
1528 
1529 	/* Create got.conf(5). */
1530 	err = create_gotconfig(proto, host, port, remote_repo_path,
1531 	    default_branch, fetch_all_branches, wanted_branches,
1532 	    wanted_refs, mirror_references, repo);
1533 	if (err)
1534 		return err;
1535 
1536 	/* Create a config file Git can understand. */
1537 	return create_gitconfig(git_url, default_branch, fetch_all_branches,
1538 	    wanted_branches, wanted_refs, mirror_references, repo);
1539 }
1540 
1541 static const struct got_error *
1542 cmd_clone(int argc, char *argv[])
1543 {
1544 	const struct got_error *error = NULL;
1545 	const char *uri, *dirname;
1546 	char *proto, *host, *port, *repo_name, *server_path;
1547 	char *default_destdir = NULL, *id_str = NULL;
1548 	const char *repo_path;
1549 	struct got_repository *repo = NULL;
1550 	struct got_pathlist_head refs, symrefs, wanted_branches, wanted_refs;
1551 	struct got_pathlist_entry *pe;
1552 	struct got_object_id *pack_hash = NULL;
1553 	int ch, fetchfd = -1, fetchstatus;
1554 	pid_t fetchpid = -1;
1555 	struct got_fetch_progress_arg fpa;
1556 	char *git_url = NULL;
1557 	int verbosity = 0, fetch_all_branches = 0, mirror_references = 0;
1558 	int bflag = 0, list_refs_only = 0;
1559 	int *pack_fds = NULL;
1560 
1561 	TAILQ_INIT(&refs);
1562 	TAILQ_INIT(&symrefs);
1563 	TAILQ_INIT(&wanted_branches);
1564 	TAILQ_INIT(&wanted_refs);
1565 
1566 	while ((ch = getopt(argc, argv, "ab:lmqR:v")) != -1) {
1567 		switch (ch) {
1568 		case 'a':
1569 			fetch_all_branches = 1;
1570 			break;
1571 		case 'b':
1572 			error = got_pathlist_append(&wanted_branches,
1573 			    optarg, NULL);
1574 			if (error)
1575 				return error;
1576 			bflag = 1;
1577 			break;
1578 		case 'l':
1579 			list_refs_only = 1;
1580 			break;
1581 		case 'm':
1582 			mirror_references = 1;
1583 			break;
1584 		case 'q':
1585 			verbosity = -1;
1586 			break;
1587 		case 'R':
1588 			error = got_pathlist_append(&wanted_refs,
1589 			    optarg, NULL);
1590 			if (error)
1591 				return error;
1592 			break;
1593 		case 'v':
1594 			if (verbosity < 0)
1595 				verbosity = 0;
1596 			else if (verbosity < 3)
1597 				verbosity++;
1598 			break;
1599 		default:
1600 			usage_clone();
1601 			break;
1602 		}
1603 	}
1604 	argc -= optind;
1605 	argv += optind;
1606 
1607 	if (fetch_all_branches && !TAILQ_EMPTY(&wanted_branches))
1608 		option_conflict('a', 'b');
1609 	if (list_refs_only) {
1610 		if (!TAILQ_EMPTY(&wanted_branches))
1611 			option_conflict('l', 'b');
1612 		if (fetch_all_branches)
1613 			option_conflict('l', 'a');
1614 		if (mirror_references)
1615 			option_conflict('l', 'm');
1616 		if (!TAILQ_EMPTY(&wanted_refs))
1617 			option_conflict('l', 'R');
1618 	}
1619 
1620 	uri = argv[0];
1621 
1622 	if (argc == 1)
1623 		dirname = NULL;
1624 	else if (argc == 2)
1625 		dirname = argv[1];
1626 	else
1627 		usage_clone();
1628 
1629 	error = got_dial_parse_uri(&proto, &host, &port, &server_path,
1630 	    &repo_name, uri);
1631 	if (error)
1632 		goto done;
1633 
1634 	if (asprintf(&git_url, "%s://%s%s%s%s%s", proto,
1635 	    host, port ? ":" : "", port ? port : "",
1636 	    server_path[0] != '/' ? "/" : "", server_path) == -1) {
1637 		error = got_error_from_errno("asprintf");
1638 		goto done;
1639 	}
1640 
1641 	if (strcmp(proto, "git") == 0) {
1642 #ifndef PROFILE
1643 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
1644 		    "sendfd dns inet unveil", NULL) == -1)
1645 			err(1, "pledge");
1646 #endif
1647 	} else if (strcmp(proto, "git+ssh") == 0 ||
1648 	    strcmp(proto, "ssh") == 0) {
1649 #ifndef PROFILE
1650 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
1651 		    "sendfd unveil", NULL) == -1)
1652 			err(1, "pledge");
1653 #endif
1654 	} else if (strcmp(proto, "http") == 0 ||
1655 	    strcmp(proto, "git+http") == 0) {
1656 		error = got_error_path(proto, GOT_ERR_NOT_IMPL);
1657 		goto done;
1658 	} else {
1659 		error = got_error_path(proto, GOT_ERR_BAD_PROTO);
1660 		goto done;
1661 	}
1662 	if (dirname == NULL) {
1663 		if (asprintf(&default_destdir, "%s.git", repo_name) == -1) {
1664 			error = got_error_from_errno("asprintf");
1665 			goto done;
1666 		}
1667 		repo_path = default_destdir;
1668 	} else
1669 		repo_path = dirname;
1670 
1671 	if (!list_refs_only) {
1672 		error = got_path_mkdir(repo_path);
1673 		if (error &&
1674 		    (!(error->code == GOT_ERR_ERRNO && errno == EISDIR) &&
1675 		    !(error->code == GOT_ERR_ERRNO && errno == EEXIST)))
1676 			goto done;
1677 		if (!got_path_dir_is_empty(repo_path)) {
1678 			error = got_error_path(repo_path,
1679 			    GOT_ERR_DIR_NOT_EMPTY);
1680 			goto done;
1681 		}
1682 	}
1683 
1684 	error = got_dial_apply_unveil(proto);
1685 	if (error)
1686 		goto done;
1687 
1688 	error = apply_unveil(repo_path, 0, NULL);
1689 	if (error)
1690 		goto done;
1691 
1692 	if (verbosity >= 0)
1693 		printf("Connecting to %s\n", git_url);
1694 
1695 	error = got_fetch_connect(&fetchpid, &fetchfd, proto, host, port,
1696 	    server_path, verbosity);
1697 	if (error)
1698 		goto done;
1699 
1700 	if (!list_refs_only) {
1701 		error = got_repo_init(repo_path, NULL);
1702 		if (error)
1703 			goto done;
1704 		error = got_repo_pack_fds_open(&pack_fds);
1705 		if (error != NULL)
1706 			goto done;
1707 		error = got_repo_open(&repo, repo_path, NULL, pack_fds);
1708 		if (error)
1709 			goto done;
1710 	}
1711 
1712 	fpa.last_scaled_size[0] = '\0';
1713 	fpa.last_p_indexed = -1;
1714 	fpa.last_p_resolved = -1;
1715 	fpa.verbosity = verbosity;
1716 	fpa.create_configs = 1;
1717 	fpa.configs_created = 0;
1718 	fpa.repo = repo;
1719 	fpa.config_info.symrefs = &symrefs;
1720 	fpa.config_info.wanted_branches = &wanted_branches;
1721 	fpa.config_info.wanted_refs = &wanted_refs;
1722 	fpa.config_info.proto = proto;
1723 	fpa.config_info.host = host;
1724 	fpa.config_info.port = port;
1725 	fpa.config_info.remote_repo_path = server_path;
1726 	fpa.config_info.git_url = git_url;
1727 	fpa.config_info.fetch_all_branches = fetch_all_branches;
1728 	fpa.config_info.mirror_references = mirror_references;
1729 	error = got_fetch_pack(&pack_hash, &refs, &symrefs,
1730 	    GOT_FETCH_DEFAULT_REMOTE_NAME, mirror_references,
1731 	    fetch_all_branches, &wanted_branches, &wanted_refs,
1732 	    list_refs_only, verbosity, fetchfd, repo, NULL, NULL, bflag,
1733 	    fetch_progress, &fpa);
1734 	if (error)
1735 		goto done;
1736 
1737 	if (list_refs_only) {
1738 		error = list_remote_refs(&symrefs, &refs);
1739 		goto done;
1740 	}
1741 
1742 	if (pack_hash == NULL) {
1743 		error = got_error_fmt(GOT_ERR_FETCH_FAILED, "%s",
1744 		    "server sent an empty pack file");
1745 		goto done;
1746 	}
1747 	error = got_object_id_str(&id_str, pack_hash);
1748 	if (error)
1749 		goto done;
1750 	if (verbosity >= 0)
1751 		printf("\nFetched %s.pack\n", id_str);
1752 	free(id_str);
1753 
1754 	/* Set up references provided with the pack file. */
1755 	TAILQ_FOREACH(pe, &refs, entry) {
1756 		const char *refname = pe->path;
1757 		struct got_object_id *id = pe->data;
1758 		char *remote_refname;
1759 
1760 		if (is_wanted_ref(&wanted_refs, refname) &&
1761 		    !mirror_references) {
1762 			error = create_wanted_ref(refname, id,
1763 			    GOT_FETCH_DEFAULT_REMOTE_NAME,
1764 			    verbosity - 1, repo);
1765 			if (error)
1766 				goto done;
1767 			continue;
1768 		}
1769 
1770 		error = create_ref(refname, id, verbosity - 1, repo);
1771 		if (error)
1772 			goto done;
1773 
1774 		if (mirror_references)
1775 			continue;
1776 
1777 		if (strncmp("refs/heads/", refname, 11) != 0)
1778 			continue;
1779 
1780 		if (asprintf(&remote_refname,
1781 		    "refs/remotes/%s/%s", GOT_FETCH_DEFAULT_REMOTE_NAME,
1782 		    refname + 11) == -1) {
1783 			error = got_error_from_errno("asprintf");
1784 			goto done;
1785 		}
1786 		error = create_ref(remote_refname, id, verbosity - 1, repo);
1787 		free(remote_refname);
1788 		if (error)
1789 			goto done;
1790 	}
1791 
1792 	/* Set the HEAD reference if the server provided one. */
1793 	TAILQ_FOREACH(pe, &symrefs, entry) {
1794 		struct got_reference *target_ref;
1795 		const char *refname = pe->path;
1796 		const char *target = pe->data;
1797 		char *remote_refname = NULL, *remote_target = NULL;
1798 
1799 		if (strcmp(refname, GOT_REF_HEAD) != 0)
1800 			continue;
1801 
1802 		error = got_ref_open(&target_ref, repo, target, 0);
1803 		if (error) {
1804 			if (error->code == GOT_ERR_NOT_REF) {
1805 				error = NULL;
1806 				continue;
1807 			}
1808 			goto done;
1809 		}
1810 
1811 		error = create_symref(refname, target_ref, verbosity, repo);
1812 		got_ref_close(target_ref);
1813 		if (error)
1814 			goto done;
1815 
1816 		if (mirror_references)
1817 			continue;
1818 
1819 		if (strncmp("refs/heads/", target, 11) != 0)
1820 			continue;
1821 
1822 		if (asprintf(&remote_refname,
1823 		    "refs/remotes/%s/%s", GOT_FETCH_DEFAULT_REMOTE_NAME,
1824 		    refname) == -1) {
1825 			error = got_error_from_errno("asprintf");
1826 			goto done;
1827 		}
1828 		if (asprintf(&remote_target,
1829 		    "refs/remotes/%s/%s", GOT_FETCH_DEFAULT_REMOTE_NAME,
1830 		    target + 11) == -1) {
1831 			error = got_error_from_errno("asprintf");
1832 			free(remote_refname);
1833 			goto done;
1834 		}
1835 		error = got_ref_open(&target_ref, repo, remote_target, 0);
1836 		if (error) {
1837 			free(remote_refname);
1838 			free(remote_target);
1839 			if (error->code == GOT_ERR_NOT_REF) {
1840 				error = NULL;
1841 				continue;
1842 			}
1843 			goto done;
1844 		}
1845 		error = create_symref(remote_refname, target_ref,
1846 		    verbosity - 1, repo);
1847 		free(remote_refname);
1848 		free(remote_target);
1849 		got_ref_close(target_ref);
1850 		if (error)
1851 			goto done;
1852 	}
1853 	if (pe == NULL) {
1854 		/*
1855 		 * We failed to set the HEAD reference. If we asked for
1856 		 * a set of wanted branches use the first of one of those
1857 		 * which could be fetched instead.
1858 		 */
1859 		TAILQ_FOREACH(pe, &wanted_branches, entry) {
1860 			const char *target = pe->path;
1861 			struct got_reference *target_ref;
1862 
1863 			error = got_ref_open(&target_ref, repo, target, 0);
1864 			if (error) {
1865 				if (error->code == GOT_ERR_NOT_REF) {
1866 					error = NULL;
1867 					continue;
1868 				}
1869 				goto done;
1870 			}
1871 
1872 			error = create_symref(GOT_REF_HEAD, target_ref,
1873 			    verbosity, repo);
1874 			got_ref_close(target_ref);
1875 			if (error)
1876 				goto done;
1877 			break;
1878 		}
1879 
1880 		if (!fpa.configs_created && pe != NULL) {
1881 			error = create_config_files(fpa.config_info.proto,
1882 			    fpa.config_info.host, fpa.config_info.port,
1883 			    fpa.config_info.remote_repo_path,
1884 			    fpa.config_info.git_url,
1885 			    fpa.config_info.fetch_all_branches,
1886 			    fpa.config_info.mirror_references,
1887 			    fpa.config_info.symrefs,
1888 			    fpa.config_info.wanted_branches,
1889 			    fpa.config_info.wanted_refs, fpa.repo);
1890 			if (error)
1891 				goto done;
1892 		}
1893 	}
1894 
1895 	if (verbosity >= 0)
1896 		printf("Created %s repository '%s'\n",
1897 		    mirror_references ? "mirrored" : "cloned", repo_path);
1898 done:
1899 	if (pack_fds) {
1900 		const struct got_error *pack_err =
1901 		    got_repo_pack_fds_close(pack_fds);
1902 		if (error == NULL)
1903 			error = pack_err;
1904 	}
1905 	if (fetchpid > 0) {
1906 		if (kill(fetchpid, SIGTERM) == -1)
1907 			error = got_error_from_errno("kill");
1908 		if (waitpid(fetchpid, &fetchstatus, 0) == -1 && error == NULL)
1909 			error = got_error_from_errno("waitpid");
1910 	}
1911 	if (fetchfd != -1 && close(fetchfd) == -1 && error == NULL)
1912 		error = got_error_from_errno("close");
1913 	if (repo) {
1914 		const struct got_error *close_err = got_repo_close(repo);
1915 		if (error == NULL)
1916 			error = close_err;
1917 	}
1918 	got_pathlist_free(&refs, GOT_PATHLIST_FREE_ALL);
1919 	got_pathlist_free(&symrefs, GOT_PATHLIST_FREE_ALL);
1920 	got_pathlist_free(&wanted_branches, GOT_PATHLIST_FREE_NONE);
1921 	got_pathlist_free(&wanted_refs, GOT_PATHLIST_FREE_NONE);
1922 	free(pack_hash);
1923 	free(proto);
1924 	free(host);
1925 	free(port);
1926 	free(server_path);
1927 	free(repo_name);
1928 	free(default_destdir);
1929 	free(git_url);
1930 	return error;
1931 }
1932 
1933 static const struct got_error *
1934 update_ref(struct got_reference *ref, struct got_object_id *new_id,
1935     int replace_tags, int verbosity, struct got_repository *repo)
1936 {
1937 	const struct got_error *err = NULL;
1938 	char *new_id_str = NULL;
1939 	struct got_object_id *old_id = NULL;
1940 
1941 	err = got_object_id_str(&new_id_str, new_id);
1942 	if (err)
1943 		goto done;
1944 
1945 	if (!replace_tags &&
1946 	    strncmp(got_ref_get_name(ref), "refs/tags/", 10) == 0) {
1947 		err = got_ref_resolve(&old_id, repo, ref);
1948 		if (err)
1949 			goto done;
1950 		if (got_object_id_cmp(old_id, new_id) == 0)
1951 			goto done;
1952 		if (verbosity >= 0) {
1953 			printf("Rejecting update of existing tag %s: %s\n",
1954 			    got_ref_get_name(ref), new_id_str);
1955 		}
1956 		goto done;
1957 	}
1958 
1959 	if (got_ref_is_symbolic(ref)) {
1960 		if (verbosity >= 0) {
1961 			printf("Replacing reference %s: %s\n",
1962 			    got_ref_get_name(ref),
1963 			    got_ref_get_symref_target(ref));
1964 		}
1965 		err = got_ref_change_symref_to_ref(ref, new_id);
1966 		if (err)
1967 			goto done;
1968 		err = got_ref_write(ref, repo);
1969 		if (err)
1970 			goto done;
1971 	} else {
1972 		err = got_ref_resolve(&old_id, repo, ref);
1973 		if (err)
1974 			goto done;
1975 		if (got_object_id_cmp(old_id, new_id) == 0)
1976 			goto done;
1977 
1978 		err = got_ref_change_ref(ref, new_id);
1979 		if (err)
1980 			goto done;
1981 		err = got_ref_write(ref, repo);
1982 		if (err)
1983 			goto done;
1984 	}
1985 
1986 	if (verbosity >= 0)
1987 		printf("Updated %s: %s\n", got_ref_get_name(ref),
1988 		    new_id_str);
1989 done:
1990 	free(old_id);
1991 	free(new_id_str);
1992 	return err;
1993 }
1994 
1995 static const struct got_error *
1996 update_symref(const char *refname, struct got_reference *target_ref,
1997     int verbosity, struct got_repository *repo)
1998 {
1999 	const struct got_error *err = NULL, *unlock_err;
2000 	struct got_reference *symref;
2001 	int symref_is_locked = 0;
2002 
2003 	err = got_ref_open(&symref, repo, refname, 1);
2004 	if (err) {
2005 		if (err->code != GOT_ERR_NOT_REF)
2006 			return err;
2007 		err = got_ref_alloc_symref(&symref, refname, target_ref);
2008 		if (err)
2009 			goto done;
2010 
2011 		err = got_ref_write(symref, repo);
2012 		if (err)
2013 			goto done;
2014 
2015 		if (verbosity >= 0)
2016 			printf("Created reference %s: %s\n",
2017 			    got_ref_get_name(symref),
2018 			    got_ref_get_symref_target(symref));
2019 	} else {
2020 		symref_is_locked = 1;
2021 
2022 		if (strcmp(got_ref_get_symref_target(symref),
2023 		    got_ref_get_name(target_ref)) == 0)
2024 			goto done;
2025 
2026 		err = got_ref_change_symref(symref,
2027 		    got_ref_get_name(target_ref));
2028 		if (err)
2029 			goto done;
2030 
2031 		err = got_ref_write(symref, repo);
2032 		if (err)
2033 			goto done;
2034 
2035 		if (verbosity >= 0)
2036 			printf("Updated %s: %s\n", got_ref_get_name(symref),
2037 			    got_ref_get_symref_target(symref));
2038 
2039 	}
2040 done:
2041 	if (symref_is_locked) {
2042 		unlock_err = got_ref_unlock(symref);
2043 		if (unlock_err && err == NULL)
2044 			err = unlock_err;
2045 	}
2046 	got_ref_close(symref);
2047 	return err;
2048 }
2049 
2050 __dead static void
2051 usage_fetch(void)
2052 {
2053 	fprintf(stderr, "usage: %s fetch [-adlqtvX] [-b branch] "
2054 	    "[-R reference] [-r repository-path] [remote-repository]\n",
2055 	    getprogname());
2056 	exit(1);
2057 }
2058 
2059 static const struct got_error *
2060 delete_missing_ref(struct got_reference *ref,
2061     int verbosity, struct got_repository *repo)
2062 {
2063 	const struct got_error *err = NULL;
2064 	struct got_object_id *id = NULL;
2065 	char *id_str = NULL;
2066 
2067 	if (got_ref_is_symbolic(ref)) {
2068 		err = got_ref_delete(ref, repo);
2069 		if (err)
2070 			return err;
2071 		if (verbosity >= 0) {
2072 			printf("Deleted %s: %s\n",
2073 			    got_ref_get_name(ref),
2074 			    got_ref_get_symref_target(ref));
2075 		}
2076 	} else {
2077 		err = got_ref_resolve(&id, repo, ref);
2078 		if (err)
2079 			return err;
2080 		err = got_object_id_str(&id_str, id);
2081 		if (err)
2082 			goto done;
2083 
2084 		err = got_ref_delete(ref, repo);
2085 		if (err)
2086 			goto done;
2087 		if (verbosity >= 0) {
2088 			printf("Deleted %s: %s\n",
2089 			    got_ref_get_name(ref), id_str);
2090 		}
2091 	}
2092 done:
2093 	free(id);
2094 	free(id_str);
2095 	return err;
2096 }
2097 
2098 static const struct got_error *
2099 delete_missing_refs(struct got_pathlist_head *their_refs,
2100     struct got_pathlist_head *their_symrefs,
2101     const struct got_remote_repo *remote,
2102     int verbosity, struct got_repository *repo)
2103 {
2104 	const struct got_error *err = NULL, *unlock_err;
2105 	struct got_reflist_head my_refs;
2106 	struct got_reflist_entry *re;
2107 	struct got_pathlist_entry *pe;
2108 	char *remote_namespace = NULL;
2109 	char *local_refname = NULL;
2110 
2111 	TAILQ_INIT(&my_refs);
2112 
2113 	if (asprintf(&remote_namespace, "refs/remotes/%s/", remote->name)
2114 	    == -1)
2115 		return got_error_from_errno("asprintf");
2116 
2117 	err = got_ref_list(&my_refs, repo, NULL, got_ref_cmp_by_name, NULL);
2118 	if (err)
2119 		goto done;
2120 
2121 	TAILQ_FOREACH(re, &my_refs, entry) {
2122 		const char *refname = got_ref_get_name(re->ref);
2123 		const char *their_refname;
2124 
2125 		if (remote->mirror_references) {
2126 			their_refname = refname;
2127 		} else {
2128 			if (strncmp(refname, remote_namespace,
2129 			    strlen(remote_namespace)) == 0) {
2130 				if (strcmp(refname + strlen(remote_namespace),
2131 				    GOT_REF_HEAD) == 0)
2132 					continue;
2133 				if (asprintf(&local_refname, "refs/heads/%s",
2134 				    refname + strlen(remote_namespace)) == -1) {
2135 					err = got_error_from_errno("asprintf");
2136 					goto done;
2137 				}
2138 			} else if (strncmp(refname, "refs/tags/", 10) != 0)
2139 				continue;
2140 
2141 			their_refname = local_refname;
2142 		}
2143 
2144 		TAILQ_FOREACH(pe, their_refs, entry) {
2145 			if (strcmp(their_refname, pe->path) == 0)
2146 				break;
2147 		}
2148 		if (pe != NULL)
2149 			continue;
2150 
2151 		TAILQ_FOREACH(pe, their_symrefs, entry) {
2152 			if (strcmp(their_refname, pe->path) == 0)
2153 				break;
2154 		}
2155 		if (pe != NULL)
2156 			continue;
2157 
2158 		err = delete_missing_ref(re->ref, verbosity, repo);
2159 		if (err)
2160 			break;
2161 
2162 		if (local_refname) {
2163 			struct got_reference *ref;
2164 			err = got_ref_open(&ref, repo, local_refname, 1);
2165 			if (err) {
2166 				if (err->code != GOT_ERR_NOT_REF)
2167 					break;
2168 				free(local_refname);
2169 				local_refname = NULL;
2170 				continue;
2171 			}
2172 			err = delete_missing_ref(ref, verbosity, repo);
2173 			if (err)
2174 				break;
2175 			unlock_err = got_ref_unlock(ref);
2176 			got_ref_close(ref);
2177 			if (unlock_err && err == NULL) {
2178 				err = unlock_err;
2179 				break;
2180 			}
2181 
2182 			free(local_refname);
2183 			local_refname = NULL;
2184 		}
2185 	}
2186 done:
2187 	got_ref_list_free(&my_refs);
2188 	free(remote_namespace);
2189 	free(local_refname);
2190 	return err;
2191 }
2192 
2193 static const struct got_error *
2194 update_wanted_ref(const char *refname, struct got_object_id *id,
2195     const char *remote_repo_name, int verbosity, struct got_repository *repo)
2196 {
2197 	const struct got_error *err, *unlock_err;
2198 	char *remote_refname;
2199 	struct got_reference *ref;
2200 
2201 	if (strncmp("refs/", refname, 5) == 0)
2202 		refname += 5;
2203 
2204 	if (asprintf(&remote_refname, "refs/remotes/%s/%s",
2205 	    remote_repo_name, refname) == -1)
2206 		return got_error_from_errno("asprintf");
2207 
2208 	err = got_ref_open(&ref, repo, remote_refname, 1);
2209 	if (err) {
2210 		if (err->code != GOT_ERR_NOT_REF)
2211 			goto done;
2212 		err = create_ref(remote_refname, id, verbosity, repo);
2213 	} else {
2214 		err = update_ref(ref, id, 0, verbosity, repo);
2215 		unlock_err = got_ref_unlock(ref);
2216 		if (unlock_err && err == NULL)
2217 			err = unlock_err;
2218 		got_ref_close(ref);
2219 	}
2220 done:
2221 	free(remote_refname);
2222 	return err;
2223 }
2224 
2225 static const struct got_error *
2226 delete_ref(struct got_repository *repo, struct got_reference *ref)
2227 {
2228 	const struct got_error *err = NULL;
2229 	struct got_object_id *id = NULL;
2230 	char *id_str = NULL;
2231 	const char *target;
2232 
2233 	if (got_ref_is_symbolic(ref)) {
2234 		target = got_ref_get_symref_target(ref);
2235 	} else {
2236 		err = got_ref_resolve(&id, repo, ref);
2237 		if (err)
2238 			goto done;
2239 		err = got_object_id_str(&id_str, id);
2240 		if (err)
2241 			goto done;
2242 		target = id_str;
2243 	}
2244 
2245 	err = got_ref_delete(ref, repo);
2246 	if (err)
2247 		goto done;
2248 
2249 	printf("Deleted %s: %s\n", got_ref_get_name(ref), target);
2250 done:
2251 	free(id);
2252 	free(id_str);
2253 	return err;
2254 }
2255 
2256 static const struct got_error *
2257 delete_refs_for_remote(struct got_repository *repo, const char *remote_name)
2258 {
2259 	const struct got_error *err = NULL;
2260 	struct got_reflist_head refs;
2261 	struct got_reflist_entry *re;
2262 	char *prefix;
2263 
2264 	TAILQ_INIT(&refs);
2265 
2266 	if (asprintf(&prefix, "refs/remotes/%s", remote_name) == -1) {
2267 		err = got_error_from_errno("asprintf");
2268 		goto done;
2269 	}
2270 	err = got_ref_list(&refs, repo, prefix, got_ref_cmp_by_name, NULL);
2271 	if (err)
2272 		goto done;
2273 
2274 	TAILQ_FOREACH(re, &refs, entry)
2275 		delete_ref(repo, re->ref);
2276 done:
2277 	got_ref_list_free(&refs);
2278 	return err;
2279 }
2280 
2281 static const struct got_error *
2282 cmd_fetch(int argc, char *argv[])
2283 {
2284 	const struct got_error *error = NULL, *unlock_err;
2285 	char *cwd = NULL, *repo_path = NULL;
2286 	const char *remote_name;
2287 	char *proto = NULL, *host = NULL, *port = NULL;
2288 	char *repo_name = NULL, *server_path = NULL;
2289 	const struct got_remote_repo *remotes, *remote = NULL;
2290 	int nremotes;
2291 	char *id_str = NULL;
2292 	struct got_repository *repo = NULL;
2293 	struct got_worktree *worktree = NULL;
2294 	const struct got_gotconfig *repo_conf = NULL, *worktree_conf = NULL;
2295 	struct got_pathlist_head refs, symrefs, wanted_branches, wanted_refs;
2296 	struct got_pathlist_entry *pe;
2297 	struct got_reflist_head remote_refs;
2298 	struct got_reflist_entry *re;
2299 	struct got_object_id *pack_hash = NULL;
2300 	int i, ch, fetchfd = -1, fetchstatus;
2301 	pid_t fetchpid = -1;
2302 	struct got_fetch_progress_arg fpa;
2303 	int verbosity = 0, fetch_all_branches = 0, list_refs_only = 0;
2304 	int delete_refs = 0, replace_tags = 0, delete_remote = 0;
2305 	int *pack_fds = NULL, have_bflag = 0;
2306 	const char *remote_head = NULL, *worktree_branch = NULL;
2307 
2308 	TAILQ_INIT(&refs);
2309 	TAILQ_INIT(&symrefs);
2310 	TAILQ_INIT(&remote_refs);
2311 	TAILQ_INIT(&wanted_branches);
2312 	TAILQ_INIT(&wanted_refs);
2313 
2314 	while ((ch = getopt(argc, argv, "ab:dlqR:r:tvX")) != -1) {
2315 		switch (ch) {
2316 		case 'a':
2317 			fetch_all_branches = 1;
2318 			break;
2319 		case 'b':
2320 			error = got_pathlist_append(&wanted_branches,
2321 			    optarg, NULL);
2322 			if (error)
2323 				return error;
2324 			have_bflag = 1;
2325 			break;
2326 		case 'd':
2327 			delete_refs = 1;
2328 			break;
2329 		case 'l':
2330 			list_refs_only = 1;
2331 			break;
2332 		case 'q':
2333 			verbosity = -1;
2334 			break;
2335 		case 'R':
2336 			error = got_pathlist_append(&wanted_refs,
2337 			    optarg, NULL);
2338 			if (error)
2339 				return error;
2340 			break;
2341 		case 'r':
2342 			repo_path = realpath(optarg, NULL);
2343 			if (repo_path == NULL)
2344 				return got_error_from_errno2("realpath",
2345 				    optarg);
2346 			got_path_strip_trailing_slashes(repo_path);
2347 			break;
2348 		case 't':
2349 			replace_tags = 1;
2350 			break;
2351 		case 'v':
2352 			if (verbosity < 0)
2353 				verbosity = 0;
2354 			else if (verbosity < 3)
2355 				verbosity++;
2356 			break;
2357 		case 'X':
2358 			delete_remote = 1;
2359 			break;
2360 		default:
2361 			usage_fetch();
2362 			break;
2363 		}
2364 	}
2365 	argc -= optind;
2366 	argv += optind;
2367 
2368 	if (fetch_all_branches && !TAILQ_EMPTY(&wanted_branches))
2369 		option_conflict('a', 'b');
2370 	if (list_refs_only) {
2371 		if (!TAILQ_EMPTY(&wanted_branches))
2372 			option_conflict('l', 'b');
2373 		if (fetch_all_branches)
2374 			option_conflict('l', 'a');
2375 		if (delete_refs)
2376 			option_conflict('l', 'd');
2377 		if (delete_remote)
2378 			option_conflict('l', 'X');
2379 	}
2380 	if (delete_remote) {
2381 		if (fetch_all_branches)
2382 			option_conflict('X', 'a');
2383 		if (!TAILQ_EMPTY(&wanted_branches))
2384 			option_conflict('X', 'b');
2385 		if (delete_refs)
2386 			option_conflict('X', 'd');
2387 		if (replace_tags)
2388 			option_conflict('X', 't');
2389 		if (!TAILQ_EMPTY(&wanted_refs))
2390 			option_conflict('X', 'R');
2391 	}
2392 
2393 	if (argc == 0) {
2394 		if (delete_remote)
2395 			errx(1, "-X option requires a remote name");
2396 		remote_name = GOT_FETCH_DEFAULT_REMOTE_NAME;
2397 	} else if (argc == 1)
2398 		remote_name = argv[0];
2399 	else
2400 		usage_fetch();
2401 
2402 	cwd = getcwd(NULL, 0);
2403 	if (cwd == NULL) {
2404 		error = got_error_from_errno("getcwd");
2405 		goto done;
2406 	}
2407 
2408 	error = got_repo_pack_fds_open(&pack_fds);
2409 	if (error != NULL)
2410 		goto done;
2411 
2412 	if (repo_path == NULL) {
2413 		error = got_worktree_open(&worktree, cwd);
2414 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
2415 			goto done;
2416 		else
2417 			error = NULL;
2418 		if (worktree) {
2419 			repo_path =
2420 			    strdup(got_worktree_get_repo_path(worktree));
2421 			if (repo_path == NULL)
2422 				error = got_error_from_errno("strdup");
2423 			if (error)
2424 				goto done;
2425 		} else {
2426 			repo_path = strdup(cwd);
2427 			if (repo_path == NULL) {
2428 				error = got_error_from_errno("strdup");
2429 				goto done;
2430 			}
2431 		}
2432 	}
2433 
2434 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
2435 	if (error)
2436 		goto done;
2437 
2438 	if (delete_remote) {
2439 		error = delete_refs_for_remote(repo, remote_name);
2440 		goto done; /* nothing else to do */
2441 	}
2442 
2443 	if (worktree) {
2444 		worktree_conf = got_worktree_get_gotconfig(worktree);
2445 		if (worktree_conf) {
2446 			got_gotconfig_get_remotes(&nremotes, &remotes,
2447 			    worktree_conf);
2448 			for (i = 0; i < nremotes; i++) {
2449 				if (strcmp(remotes[i].name, remote_name) == 0) {
2450 					remote = &remotes[i];
2451 					break;
2452 				}
2453 			}
2454 		}
2455 	}
2456 	if (remote == NULL) {
2457 		repo_conf = got_repo_get_gotconfig(repo);
2458 		if (repo_conf) {
2459 			got_gotconfig_get_remotes(&nremotes, &remotes,
2460 			    repo_conf);
2461 			for (i = 0; i < nremotes; i++) {
2462 				if (strcmp(remotes[i].name, remote_name) == 0) {
2463 					remote = &remotes[i];
2464 					break;
2465 				}
2466 			}
2467 		}
2468 	}
2469 	if (remote == NULL) {
2470 		got_repo_get_gitconfig_remotes(&nremotes, &remotes, repo);
2471 		for (i = 0; i < nremotes; i++) {
2472 			if (strcmp(remotes[i].name, remote_name) == 0) {
2473 				remote = &remotes[i];
2474 				break;
2475 			}
2476 		}
2477 	}
2478 	if (remote == NULL) {
2479 		error = got_error_path(remote_name, GOT_ERR_NO_REMOTE);
2480 		goto done;
2481 	}
2482 
2483 	if (TAILQ_EMPTY(&wanted_branches)) {
2484 		if (!fetch_all_branches)
2485 			fetch_all_branches = remote->fetch_all_branches;
2486 		for (i = 0; i < remote->nfetch_branches; i++) {
2487 			error = got_pathlist_append(&wanted_branches,
2488 			    remote->fetch_branches[i], NULL);
2489 			if (error)
2490 				goto done;
2491 		}
2492 	}
2493 	if (TAILQ_EMPTY(&wanted_refs)) {
2494 		for (i = 0; i < remote->nfetch_refs; i++) {
2495 			error = got_pathlist_append(&wanted_refs,
2496 			    remote->fetch_refs[i], NULL);
2497 			if (error)
2498 				goto done;
2499 		}
2500 	}
2501 
2502 	error = got_dial_parse_uri(&proto, &host, &port, &server_path,
2503 	    &repo_name, remote->fetch_url);
2504 	if (error)
2505 		goto done;
2506 
2507 	if (strcmp(proto, "git") == 0) {
2508 #ifndef PROFILE
2509 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
2510 		    "sendfd dns inet unveil", NULL) == -1)
2511 			err(1, "pledge");
2512 #endif
2513 	} else if (strcmp(proto, "git+ssh") == 0 ||
2514 	    strcmp(proto, "ssh") == 0) {
2515 #ifndef PROFILE
2516 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
2517 		    "sendfd unveil", NULL) == -1)
2518 			err(1, "pledge");
2519 #endif
2520 	} else if (strcmp(proto, "http") == 0 ||
2521 	    strcmp(proto, "git+http") == 0) {
2522 		error = got_error_path(proto, GOT_ERR_NOT_IMPL);
2523 		goto done;
2524 	} else {
2525 		error = got_error_path(proto, GOT_ERR_BAD_PROTO);
2526 		goto done;
2527 	}
2528 
2529 	error = got_dial_apply_unveil(proto);
2530 	if (error)
2531 		goto done;
2532 
2533 	error = apply_unveil(got_repo_get_path(repo), 0, NULL);
2534 	if (error)
2535 		goto done;
2536 
2537 	if (verbosity >= 0) {
2538 		printf("Connecting to \"%s\" %s://%s%s%s%s%s\n",
2539 		    remote->name, proto, host,
2540 		    port ? ":" : "", port ? port : "",
2541 		    *server_path == '/' ? "" : "/", server_path);
2542 	}
2543 
2544 	error = got_fetch_connect(&fetchpid, &fetchfd, proto, host, port,
2545 	    server_path, verbosity);
2546 	if (error)
2547 		goto done;
2548 
2549 	if (!have_bflag) {
2550 		/*
2551 		 * If set, get this remote's HEAD ref target so
2552 		 * if it has changed on the server we can fetch it.
2553 		 */
2554 		error = got_ref_list(&remote_refs, repo, "refs/remotes",
2555 		    got_ref_cmp_by_name, repo);
2556 		if (error)
2557 			goto done;
2558 
2559 		TAILQ_FOREACH(re, &remote_refs, entry) {
2560 			const char	*remote_refname, *remote_target;
2561 			size_t		 remote_name_len;
2562 
2563 			if (!got_ref_is_symbolic(re->ref))
2564 				continue;
2565 
2566 			remote_name_len = strlen(remote->name);
2567 			remote_refname = got_ref_get_name(re->ref);
2568 
2569 			/* we only want refs/remotes/$remote->name/HEAD */
2570 			if (strncmp(remote_refname + 13, remote->name,
2571 			    remote_name_len) != 0)
2572 				continue;
2573 
2574 			if (strcmp(remote_refname + remote_name_len + 14,
2575 			    GOT_REF_HEAD) != 0)
2576 				continue;
2577 
2578 			/*
2579 			 * Take the name itself because we already
2580 			 * only match with refs/heads/ in fetch_pack().
2581 			 */
2582 			remote_target = got_ref_get_symref_target(re->ref);
2583 			remote_head = remote_target + remote_name_len + 14;
2584 			break;
2585 		}
2586 
2587 		if (worktree) {
2588 			const char *refname;
2589 
2590 			refname = got_worktree_get_head_ref_name(worktree);
2591 			if (strncmp(refname, "refs/heads/", 11) == 0)
2592 				worktree_branch = refname;
2593 		}
2594 	}
2595 
2596 	fpa.last_scaled_size[0] = '\0';
2597 	fpa.last_p_indexed = -1;
2598 	fpa.last_p_resolved = -1;
2599 	fpa.verbosity = verbosity;
2600 	fpa.repo = repo;
2601 	fpa.create_configs = 0;
2602 	fpa.configs_created = 0;
2603 	memset(&fpa.config_info, 0, sizeof(fpa.config_info));
2604 
2605 	error = got_fetch_pack(&pack_hash, &refs, &symrefs, remote->name,
2606 	    remote->mirror_references, fetch_all_branches, &wanted_branches,
2607 	    &wanted_refs, list_refs_only, verbosity, fetchfd, repo,
2608 	    worktree_branch, remote_head, have_bflag, fetch_progress, &fpa);
2609 	if (error)
2610 		goto done;
2611 
2612 	if (list_refs_only) {
2613 		error = list_remote_refs(&symrefs, &refs);
2614 		goto done;
2615 	}
2616 
2617 	if (pack_hash == NULL) {
2618 		if (verbosity >= 0)
2619 			printf("Already up-to-date\n");
2620 	} else if (verbosity >= 0) {
2621 		error = got_object_id_str(&id_str, pack_hash);
2622 		if (error)
2623 			goto done;
2624 		printf("\nFetched %s.pack\n", id_str);
2625 		free(id_str);
2626 		id_str = NULL;
2627 	}
2628 
2629 	/* Update references provided with the pack file. */
2630 	TAILQ_FOREACH(pe, &refs, entry) {
2631 		const char *refname = pe->path;
2632 		struct got_object_id *id = pe->data;
2633 		struct got_reference *ref;
2634 		char *remote_refname;
2635 
2636 		if (is_wanted_ref(&wanted_refs, refname) &&
2637 		    !remote->mirror_references) {
2638 			error = update_wanted_ref(refname, id,
2639 			    remote->name, verbosity, repo);
2640 			if (error)
2641 				goto done;
2642 			continue;
2643 		}
2644 
2645 		if (remote->mirror_references ||
2646 		    strncmp("refs/tags/", refname, 10) == 0) {
2647 			error = got_ref_open(&ref, repo, refname, 1);
2648 			if (error) {
2649 				if (error->code != GOT_ERR_NOT_REF)
2650 					goto done;
2651 				error = create_ref(refname, id, verbosity,
2652 				    repo);
2653 				if (error)
2654 					goto done;
2655 			} else {
2656 				error = update_ref(ref, id, replace_tags,
2657 				    verbosity, repo);
2658 				unlock_err = got_ref_unlock(ref);
2659 				if (unlock_err && error == NULL)
2660 					error = unlock_err;
2661 				got_ref_close(ref);
2662 				if (error)
2663 					goto done;
2664 			}
2665 		} else if (strncmp("refs/heads/", refname, 11) == 0) {
2666 			if (asprintf(&remote_refname, "refs/remotes/%s/%s",
2667 			    remote_name, refname + 11) == -1) {
2668 				error = got_error_from_errno("asprintf");
2669 				goto done;
2670 			}
2671 
2672 			error = got_ref_open(&ref, repo, remote_refname, 1);
2673 			if (error) {
2674 				if (error->code != GOT_ERR_NOT_REF)
2675 					goto done;
2676 				error = create_ref(remote_refname, id,
2677 				    verbosity, repo);
2678 				if (error)
2679 					goto done;
2680 			} else {
2681 				error = update_ref(ref, id, replace_tags,
2682 				    verbosity, repo);
2683 				unlock_err = got_ref_unlock(ref);
2684 				if (unlock_err && error == NULL)
2685 					error = unlock_err;
2686 				got_ref_close(ref);
2687 				if (error)
2688 					goto done;
2689 			}
2690 
2691 			/* Also create a local branch if none exists yet. */
2692 			error = got_ref_open(&ref, repo, refname, 1);
2693 			if (error) {
2694 				if (error->code != GOT_ERR_NOT_REF)
2695 					goto done;
2696 				error = create_ref(refname, id, verbosity,
2697 				    repo);
2698 				if (error)
2699 					goto done;
2700 			} else {
2701 				unlock_err = got_ref_unlock(ref);
2702 				if (unlock_err && error == NULL)
2703 					error = unlock_err;
2704 				got_ref_close(ref);
2705 			}
2706 		}
2707 	}
2708 	if (delete_refs) {
2709 		error = delete_missing_refs(&refs, &symrefs, remote,
2710 		    verbosity, repo);
2711 		if (error)
2712 			goto done;
2713 	}
2714 
2715 	if (!remote->mirror_references) {
2716 		/* Update remote HEAD reference if the server provided one. */
2717 		TAILQ_FOREACH(pe, &symrefs, entry) {
2718 			struct got_reference *target_ref;
2719 			const char *refname = pe->path;
2720 			const char *target = pe->data;
2721 			char *remote_refname = NULL, *remote_target = NULL;
2722 
2723 			if (strcmp(refname, GOT_REF_HEAD) != 0)
2724 				continue;
2725 
2726 			if (strncmp("refs/heads/", target, 11) != 0)
2727 				continue;
2728 
2729 			if (asprintf(&remote_refname, "refs/remotes/%s/%s",
2730 			    remote->name, refname) == -1) {
2731 				error = got_error_from_errno("asprintf");
2732 				goto done;
2733 			}
2734 			if (asprintf(&remote_target, "refs/remotes/%s/%s",
2735 			    remote->name, target + 11) == -1) {
2736 				error = got_error_from_errno("asprintf");
2737 				free(remote_refname);
2738 				goto done;
2739 			}
2740 
2741 			error = got_ref_open(&target_ref, repo, remote_target,
2742 			    0);
2743 			if (error) {
2744 				free(remote_refname);
2745 				free(remote_target);
2746 				if (error->code == GOT_ERR_NOT_REF) {
2747 					error = NULL;
2748 					continue;
2749 				}
2750 				goto done;
2751 			}
2752 			error = update_symref(remote_refname, target_ref,
2753 			    verbosity, repo);
2754 			free(remote_refname);
2755 			free(remote_target);
2756 			got_ref_close(target_ref);
2757 			if (error)
2758 				goto done;
2759 		}
2760 	}
2761 done:
2762 	if (fetchpid > 0) {
2763 		if (kill(fetchpid, SIGTERM) == -1)
2764 			error = got_error_from_errno("kill");
2765 		if (waitpid(fetchpid, &fetchstatus, 0) == -1 && error == NULL)
2766 			error = got_error_from_errno("waitpid");
2767 	}
2768 	if (fetchfd != -1 && close(fetchfd) == -1 && error == NULL)
2769 		error = got_error_from_errno("close");
2770 	if (repo) {
2771 		const struct got_error *close_err = got_repo_close(repo);
2772 		if (error == NULL)
2773 			error = close_err;
2774 	}
2775 	if (worktree)
2776 		got_worktree_close(worktree);
2777 	if (pack_fds) {
2778 		const struct got_error *pack_err =
2779 		    got_repo_pack_fds_close(pack_fds);
2780 		if (error == NULL)
2781 			error = pack_err;
2782 	}
2783 	got_pathlist_free(&refs, GOT_PATHLIST_FREE_ALL);
2784 	got_pathlist_free(&symrefs, GOT_PATHLIST_FREE_ALL);
2785 	got_pathlist_free(&wanted_branches, GOT_PATHLIST_FREE_NONE);
2786 	got_pathlist_free(&wanted_refs, GOT_PATHLIST_FREE_NONE);
2787 	got_ref_list_free(&remote_refs);
2788 	free(id_str);
2789 	free(cwd);
2790 	free(repo_path);
2791 	free(pack_hash);
2792 	free(proto);
2793 	free(host);
2794 	free(port);
2795 	free(server_path);
2796 	free(repo_name);
2797 	return error;
2798 }
2799 
2800 
2801 __dead static void
2802 usage_checkout(void)
2803 {
2804 	fprintf(stderr, "usage: %s checkout [-Eq] [-b branch] [-c commit] "
2805 	    "[-p path-prefix] repository-path [work-tree-path]\n",
2806 	    getprogname());
2807 	exit(1);
2808 }
2809 
2810 static void
2811 show_worktree_base_ref_warning(void)
2812 {
2813 	fprintf(stderr, "%s: warning: could not create a reference "
2814 	    "to the work tree's base commit; the commit could be "
2815 	    "garbage-collected by Git or 'gotadmin cleanup'; making the "
2816 	    "repository writable and running 'got update' will prevent this\n",
2817 	    getprogname());
2818 }
2819 
2820 struct got_checkout_progress_arg {
2821 	const char *worktree_path;
2822 	int had_base_commit_ref_error;
2823 	int verbosity;
2824 };
2825 
2826 static const struct got_error *
2827 checkout_progress(void *arg, unsigned char status, const char *path)
2828 {
2829 	struct got_checkout_progress_arg *a = arg;
2830 
2831 	/* Base commit bump happens silently. */
2832 	if (status == GOT_STATUS_BUMP_BASE)
2833 		return NULL;
2834 
2835 	if (status == GOT_STATUS_BASE_REF_ERR) {
2836 		a->had_base_commit_ref_error = 1;
2837 		return NULL;
2838 	}
2839 
2840 	while (path[0] == '/')
2841 		path++;
2842 
2843 	if (a->verbosity >= 0)
2844 		printf("%c  %s/%s\n", status, a->worktree_path, path);
2845 
2846 	return NULL;
2847 }
2848 
2849 static const struct got_error *
2850 check_cancelled(void *arg)
2851 {
2852 	if (sigint_received || sigpipe_received)
2853 		return got_error(GOT_ERR_CANCELLED);
2854 	return NULL;
2855 }
2856 
2857 static const struct got_error *
2858 check_linear_ancestry(struct got_object_id *commit_id,
2859     struct got_object_id *base_commit_id, int allow_forwards_in_time_only,
2860     struct got_repository *repo)
2861 {
2862 	const struct got_error *err = NULL;
2863 	struct got_object_id *yca_id;
2864 
2865 	err = got_commit_graph_find_youngest_common_ancestor(&yca_id,
2866 	    commit_id, base_commit_id, 1, repo, check_cancelled, NULL);
2867 	if (err)
2868 		return err;
2869 
2870 	if (yca_id == NULL)
2871 		return got_error(GOT_ERR_ANCESTRY);
2872 
2873 	/*
2874 	 * Require a straight line of history between the target commit
2875 	 * and the work tree's base commit.
2876 	 *
2877 	 * Non-linear situations such as this require a rebase:
2878 	 *
2879 	 * (commit) D       F (base_commit)
2880 	 *           \     /
2881 	 *            C   E
2882 	 *             \ /
2883 	 *              B (yca)
2884 	 *              |
2885 	 *              A
2886 	 *
2887 	 * 'got update' only handles linear cases:
2888 	 * Update forwards in time:  A (base/yca) - B - C - D (commit)
2889 	 * Update backwards in time: D (base) - C - B - A (commit/yca)
2890 	 */
2891 	if (allow_forwards_in_time_only) {
2892 	    if (got_object_id_cmp(base_commit_id, yca_id) != 0)
2893 		return got_error(GOT_ERR_ANCESTRY);
2894 	} else if (got_object_id_cmp(commit_id, yca_id) != 0 &&
2895 	    got_object_id_cmp(base_commit_id, yca_id) != 0)
2896 		return got_error(GOT_ERR_ANCESTRY);
2897 
2898 	free(yca_id);
2899 	return NULL;
2900 }
2901 
2902 static const struct got_error *
2903 check_same_branch(struct got_object_id *commit_id,
2904     struct got_reference *head_ref, struct got_object_id *yca_id,
2905     struct got_repository *repo)
2906 {
2907 	const struct got_error *err = NULL;
2908 	struct got_commit_graph *graph = NULL;
2909 	struct got_object_id *head_commit_id = NULL;
2910 	int is_same_branch = 0;
2911 
2912 	err = got_ref_resolve(&head_commit_id, repo, head_ref);
2913 	if (err)
2914 		goto done;
2915 
2916 	if (got_object_id_cmp(head_commit_id, commit_id) == 0) {
2917 		is_same_branch = 1;
2918 		goto done;
2919 	}
2920 	if (yca_id && got_object_id_cmp(commit_id, yca_id) == 0) {
2921 		is_same_branch = 1;
2922 		goto done;
2923 	}
2924 
2925 	err = got_commit_graph_open(&graph, "/", 1);
2926 	if (err)
2927 		goto done;
2928 
2929 	err = got_commit_graph_iter_start(graph, head_commit_id, repo,
2930 	    check_cancelled, NULL);
2931 	if (err)
2932 		goto done;
2933 
2934 	for (;;) {
2935 		struct got_object_id id;
2936 
2937 		err = got_commit_graph_iter_next(&id, graph, repo,
2938 		    check_cancelled, NULL);
2939 		if (err) {
2940 			if (err->code == GOT_ERR_ITER_COMPLETED)
2941 				err = NULL;
2942 			break;
2943 		}
2944 
2945 		if (yca_id && got_object_id_cmp(&id, yca_id) == 0)
2946 			break;
2947 		if (got_object_id_cmp(&id, commit_id) == 0) {
2948 			is_same_branch = 1;
2949 			break;
2950 		}
2951 	}
2952 done:
2953 	if (graph)
2954 		got_commit_graph_close(graph);
2955 	free(head_commit_id);
2956 	if (!err && !is_same_branch)
2957 		err = got_error(GOT_ERR_ANCESTRY);
2958 	return err;
2959 }
2960 
2961 static const struct got_error *
2962 checkout_ancestry_error(struct got_reference *ref, const char *commit_id_str)
2963 {
2964 	static char msg[512];
2965 	const char *branch_name;
2966 
2967 	if (got_ref_is_symbolic(ref))
2968 		branch_name = got_ref_get_symref_target(ref);
2969 	else
2970 		branch_name = got_ref_get_name(ref);
2971 
2972 	if (strncmp("refs/heads/", branch_name, 11) == 0)
2973 		branch_name += 11;
2974 
2975 	snprintf(msg, sizeof(msg),
2976 	    "target commit is not contained in branch '%s'; "
2977 	    "the branch to use must be specified with -b; "
2978 	    "if necessary a new branch can be created for "
2979 	    "this commit with 'got branch -c %s BRANCH_NAME'",
2980 	    branch_name, commit_id_str);
2981 
2982 	return got_error_msg(GOT_ERR_ANCESTRY, msg);
2983 }
2984 
2985 static const struct got_error *
2986 cmd_checkout(int argc, char *argv[])
2987 {
2988 	const struct got_error *error = NULL;
2989 	struct got_repository *repo = NULL;
2990 	struct got_reference *head_ref = NULL, *ref = NULL;
2991 	struct got_worktree *worktree = NULL;
2992 	char *repo_path = NULL;
2993 	char *worktree_path = NULL;
2994 	const char *path_prefix = "";
2995 	const char *branch_name = GOT_REF_HEAD, *refname = NULL;
2996 	char *commit_id_str = NULL;
2997 	struct got_object_id *commit_id = NULL;
2998 	char *cwd = NULL;
2999 	int ch, same_path_prefix, allow_nonempty = 0, verbosity = 0;
3000 	struct got_pathlist_head paths;
3001 	struct got_checkout_progress_arg cpa;
3002 	int *pack_fds = NULL;
3003 
3004 	TAILQ_INIT(&paths);
3005 
3006 #ifndef PROFILE
3007 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
3008 	    "unveil", NULL) == -1)
3009 		err(1, "pledge");
3010 #endif
3011 
3012 	while ((ch = getopt(argc, argv, "b:c:Ep:q")) != -1) {
3013 		switch (ch) {
3014 		case 'b':
3015 			branch_name = optarg;
3016 			break;
3017 		case 'c':
3018 			commit_id_str = strdup(optarg);
3019 			if (commit_id_str == NULL)
3020 				return got_error_from_errno("strdup");
3021 			break;
3022 		case 'E':
3023 			allow_nonempty = 1;
3024 			break;
3025 		case 'p':
3026 			path_prefix = optarg;
3027 			break;
3028 		case 'q':
3029 			verbosity = -1;
3030 			break;
3031 		default:
3032 			usage_checkout();
3033 			/* NOTREACHED */
3034 		}
3035 	}
3036 
3037 	argc -= optind;
3038 	argv += optind;
3039 
3040 	if (argc == 1) {
3041 		char *base, *dotgit;
3042 		const char *path;
3043 		repo_path = realpath(argv[0], NULL);
3044 		if (repo_path == NULL)
3045 			return got_error_from_errno2("realpath", argv[0]);
3046 		cwd = getcwd(NULL, 0);
3047 		if (cwd == NULL) {
3048 			error = got_error_from_errno("getcwd");
3049 			goto done;
3050 		}
3051 		if (path_prefix[0])
3052 			path = path_prefix;
3053 		else
3054 			path = repo_path;
3055 		error = got_path_basename(&base, path);
3056 		if (error)
3057 			goto done;
3058 		dotgit = strstr(base, ".git");
3059 		if (dotgit)
3060 			*dotgit = '\0';
3061 		if (asprintf(&worktree_path, "%s/%s", cwd, base) == -1) {
3062 			error = got_error_from_errno("asprintf");
3063 			free(base);
3064 			goto done;
3065 		}
3066 		free(base);
3067 	} else if (argc == 2) {
3068 		repo_path = realpath(argv[0], NULL);
3069 		if (repo_path == NULL) {
3070 			error = got_error_from_errno2("realpath", argv[0]);
3071 			goto done;
3072 		}
3073 		worktree_path = realpath(argv[1], NULL);
3074 		if (worktree_path == NULL) {
3075 			if (errno != ENOENT) {
3076 				error = got_error_from_errno2("realpath",
3077 				    argv[1]);
3078 				goto done;
3079 			}
3080 			worktree_path = strdup(argv[1]);
3081 			if (worktree_path == NULL) {
3082 				error = got_error_from_errno("strdup");
3083 				goto done;
3084 			}
3085 		}
3086 	} else
3087 		usage_checkout();
3088 
3089 	got_path_strip_trailing_slashes(repo_path);
3090 	got_path_strip_trailing_slashes(worktree_path);
3091 
3092 	error = got_repo_pack_fds_open(&pack_fds);
3093 	if (error != NULL)
3094 		goto done;
3095 
3096 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
3097 	if (error != NULL)
3098 		goto done;
3099 
3100 	/* Pre-create work tree path for unveil(2) */
3101 	error = got_path_mkdir(worktree_path);
3102 	if (error) {
3103 		if (!(error->code == GOT_ERR_ERRNO && errno == EISDIR) &&
3104 		    !(error->code == GOT_ERR_ERRNO && errno == EEXIST))
3105 			goto done;
3106 		if (!allow_nonempty &&
3107 		    !got_path_dir_is_empty(worktree_path)) {
3108 			error = got_error_path(worktree_path,
3109 			    GOT_ERR_DIR_NOT_EMPTY);
3110 			goto done;
3111 		}
3112 	}
3113 
3114 	error = apply_unveil(got_repo_get_path(repo), 0, worktree_path);
3115 	if (error)
3116 		goto done;
3117 
3118 	error = got_ref_open(&head_ref, repo, branch_name, 0);
3119 	if (error != NULL)
3120 		goto done;
3121 
3122 	error = got_worktree_init(worktree_path, head_ref, path_prefix, repo);
3123 	if (error != NULL && !(error->code == GOT_ERR_ERRNO && errno == EEXIST))
3124 		goto done;
3125 
3126 	error = got_worktree_open(&worktree, worktree_path);
3127 	if (error != NULL)
3128 		goto done;
3129 
3130 	error = got_worktree_match_path_prefix(&same_path_prefix, worktree,
3131 	    path_prefix);
3132 	if (error != NULL)
3133 		goto done;
3134 	if (!same_path_prefix) {
3135 		error = got_error(GOT_ERR_PATH_PREFIX);
3136 		goto done;
3137 	}
3138 
3139 	if (commit_id_str) {
3140 		struct got_reflist_head refs;
3141 		TAILQ_INIT(&refs);
3142 		error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name,
3143 		    NULL);
3144 		if (error)
3145 			goto done;
3146 		error = got_repo_match_object_id(&commit_id, NULL,
3147 		    commit_id_str, GOT_OBJ_TYPE_COMMIT, &refs, repo);
3148 		got_ref_list_free(&refs);
3149 		if (error)
3150 			goto done;
3151 		error = check_linear_ancestry(commit_id,
3152 		    got_worktree_get_base_commit_id(worktree), 0, repo);
3153 		if (error != NULL) {
3154 			if (error->code == GOT_ERR_ANCESTRY) {
3155 				error = checkout_ancestry_error(
3156 				    head_ref, commit_id_str);
3157 			}
3158 			goto done;
3159 		}
3160 		error = check_same_branch(commit_id, head_ref, NULL, repo);
3161 		if (error) {
3162 			if (error->code == GOT_ERR_ANCESTRY) {
3163 				error = checkout_ancestry_error(
3164 				    head_ref, commit_id_str);
3165 			}
3166 			goto done;
3167 		}
3168 		error = got_worktree_set_base_commit_id(worktree, repo,
3169 		    commit_id);
3170 		if (error)
3171 			goto done;
3172 		/* Expand potentially abbreviated commit ID string. */
3173 		free(commit_id_str);
3174 		error = got_object_id_str(&commit_id_str, commit_id);
3175 		if (error)
3176 			goto done;
3177 	} else {
3178 		commit_id = got_object_id_dup(
3179 		    got_worktree_get_base_commit_id(worktree));
3180 		if (commit_id == NULL) {
3181 			error = got_error_from_errno("got_object_id_dup");
3182 			goto done;
3183 		}
3184 		error = got_object_id_str(&commit_id_str, commit_id);
3185 		if (error)
3186 			goto done;
3187 	}
3188 
3189 	error = got_pathlist_append(&paths, "", NULL);
3190 	if (error)
3191 		goto done;
3192 	cpa.worktree_path = worktree_path;
3193 	cpa.had_base_commit_ref_error = 0;
3194 	cpa.verbosity = verbosity;
3195 	error = got_worktree_checkout_files(worktree, &paths, repo,
3196 	    checkout_progress, &cpa, check_cancelled, NULL);
3197 	if (error != NULL)
3198 		goto done;
3199 
3200 	if (got_ref_is_symbolic(head_ref)) {
3201 		error = got_ref_resolve_symbolic(&ref, repo, head_ref);
3202 		if (error)
3203 			goto done;
3204 		refname = got_ref_get_name(ref);
3205 	} else
3206 		refname = got_ref_get_name(head_ref);
3207 	printf("Checked out %s: %s\n", refname, commit_id_str);
3208 	printf("Now shut up and hack\n");
3209 	if (cpa.had_base_commit_ref_error)
3210 		show_worktree_base_ref_warning();
3211 done:
3212 	if (pack_fds) {
3213 		const struct got_error *pack_err =
3214 		    got_repo_pack_fds_close(pack_fds);
3215 		if (error == NULL)
3216 			error = pack_err;
3217 	}
3218 	if (head_ref)
3219 		got_ref_close(head_ref);
3220 	if (ref)
3221 		got_ref_close(ref);
3222 	if (repo) {
3223 		const struct got_error *close_err = got_repo_close(repo);
3224 		if (error == NULL)
3225 			error = close_err;
3226 	}
3227 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_NONE);
3228 	free(commit_id_str);
3229 	free(commit_id);
3230 	free(repo_path);
3231 	free(worktree_path);
3232 	free(cwd);
3233 	return error;
3234 }
3235 
3236 struct got_update_progress_arg {
3237 	int did_something;
3238 	int conflicts;
3239 	int obstructed;
3240 	int not_updated;
3241 	int missing;
3242 	int not_deleted;
3243 	int unversioned;
3244 	int verbosity;
3245 };
3246 
3247 static void
3248 print_update_progress_stats(struct got_update_progress_arg *upa)
3249 {
3250 	if (!upa->did_something)
3251 		return;
3252 
3253 	if (upa->conflicts > 0)
3254 		printf("Files with new merge conflicts: %d\n", upa->conflicts);
3255 	if (upa->obstructed > 0)
3256 		printf("File paths obstructed by a non-regular file: %d\n",
3257 		    upa->obstructed);
3258 	if (upa->not_updated > 0)
3259 		printf("Files not updated because of existing merge "
3260 		    "conflicts: %d\n", upa->not_updated);
3261 }
3262 
3263 /*
3264  * The meaning of some status codes differs between merge-style operations and
3265  * update operations. For example, the ! status code means "file was missing"
3266  * if changes were merged into the work tree, and "missing file was restored"
3267  * if the work tree was updated. This function should be used by any operation
3268  * which merges changes into the work tree without updating the work tree.
3269  */
3270 static void
3271 print_merge_progress_stats(struct got_update_progress_arg *upa)
3272 {
3273 	if (!upa->did_something)
3274 		return;
3275 
3276 	if (upa->conflicts > 0)
3277 		printf("Files with new merge conflicts: %d\n", upa->conflicts);
3278 	if (upa->obstructed > 0)
3279 		printf("File paths obstructed by a non-regular file: %d\n",
3280 		    upa->obstructed);
3281 	if (upa->missing > 0)
3282 		printf("Files which had incoming changes but could not be "
3283 		    "found in the work tree: %d\n", upa->missing);
3284 	if (upa->not_deleted > 0)
3285 		printf("Files not deleted due to differences in deleted "
3286 		    "content: %d\n", upa->not_deleted);
3287 	if (upa->unversioned > 0)
3288 		printf("Files not merged because an unversioned file was "
3289 		    "found in the work tree: %d\n", upa->unversioned);
3290 }
3291 
3292 __dead static void
3293 usage_update(void)
3294 {
3295 	fprintf(stderr, "usage: %s update [-q] [-b branch] [-c commit] "
3296 	    "[path ...]\n", getprogname());
3297 	exit(1);
3298 }
3299 
3300 static const struct got_error *
3301 update_progress(void *arg, unsigned char status, const char *path)
3302 {
3303 	struct got_update_progress_arg *upa = arg;
3304 
3305 	if (status == GOT_STATUS_EXISTS ||
3306 	    status == GOT_STATUS_BASE_REF_ERR)
3307 		return NULL;
3308 
3309 	upa->did_something = 1;
3310 
3311 	/* Base commit bump happens silently. */
3312 	if (status == GOT_STATUS_BUMP_BASE)
3313 		return NULL;
3314 
3315 	if (status == GOT_STATUS_CONFLICT)
3316 		upa->conflicts++;
3317 	if (status == GOT_STATUS_OBSTRUCTED)
3318 		upa->obstructed++;
3319 	if (status == GOT_STATUS_CANNOT_UPDATE)
3320 		upa->not_updated++;
3321 	if (status == GOT_STATUS_MISSING)
3322 		upa->missing++;
3323 	if (status == GOT_STATUS_CANNOT_DELETE)
3324 		upa->not_deleted++;
3325 	if (status == GOT_STATUS_UNVERSIONED)
3326 		upa->unversioned++;
3327 
3328 	while (path[0] == '/')
3329 		path++;
3330 	if (upa->verbosity >= 0)
3331 		printf("%c  %s\n", status, path);
3332 
3333 	return NULL;
3334 }
3335 
3336 static const struct got_error *
3337 switch_head_ref(struct got_reference *head_ref,
3338     struct got_object_id *commit_id, struct got_worktree *worktree,
3339     struct got_repository *repo)
3340 {
3341 	const struct got_error *err = NULL;
3342 	char *base_id_str;
3343 	int ref_has_moved = 0;
3344 
3345 	/* Trivial case: switching between two different references. */
3346 	if (strcmp(got_ref_get_name(head_ref),
3347 	    got_worktree_get_head_ref_name(worktree)) != 0) {
3348 		printf("Switching work tree from %s to %s\n",
3349 		    got_worktree_get_head_ref_name(worktree),
3350 		    got_ref_get_name(head_ref));
3351 		return got_worktree_set_head_ref(worktree, head_ref);
3352 	}
3353 
3354 	err = check_linear_ancestry(commit_id,
3355 	    got_worktree_get_base_commit_id(worktree), 0, repo);
3356 	if (err) {
3357 		if (err->code != GOT_ERR_ANCESTRY)
3358 			return err;
3359 		ref_has_moved = 1;
3360 	}
3361 	if (!ref_has_moved)
3362 		return NULL;
3363 
3364 	/* Switching to a rebased branch with the same reference name. */
3365 	err = got_object_id_str(&base_id_str,
3366 	    got_worktree_get_base_commit_id(worktree));
3367 	if (err)
3368 		return err;
3369 	printf("Reference %s now points at a different branch\n",
3370 	    got_worktree_get_head_ref_name(worktree));
3371 	printf("Switching work tree from %s to %s\n", base_id_str,
3372 	    got_worktree_get_head_ref_name(worktree));
3373 	return NULL;
3374 }
3375 
3376 static const struct got_error *
3377 check_rebase_or_histedit_in_progress(struct got_worktree *worktree)
3378 {
3379 	const struct got_error *err;
3380 	int in_progress;
3381 
3382 	err = got_worktree_rebase_in_progress(&in_progress, worktree);
3383 	if (err)
3384 		return err;
3385 	if (in_progress)
3386 		return got_error(GOT_ERR_REBASING);
3387 
3388 	err = got_worktree_histedit_in_progress(&in_progress, worktree);
3389 	if (err)
3390 		return err;
3391 	if (in_progress)
3392 		return got_error(GOT_ERR_HISTEDIT_BUSY);
3393 
3394 	return NULL;
3395 }
3396 
3397 static const struct got_error *
3398 check_merge_in_progress(struct got_worktree *worktree,
3399     struct got_repository *repo)
3400 {
3401 	const struct got_error *err;
3402 	int in_progress;
3403 
3404 	err = got_worktree_merge_in_progress(&in_progress, worktree, repo);
3405 	if (err)
3406 		return err;
3407 	if (in_progress)
3408 		return got_error(GOT_ERR_MERGE_BUSY);
3409 
3410 	return NULL;
3411 }
3412 
3413 static const struct got_error *
3414 get_worktree_paths_from_argv(struct got_pathlist_head *paths, int argc,
3415     char *argv[], struct got_worktree *worktree)
3416 {
3417 	const struct got_error *err = NULL;
3418 	char *path;
3419 	struct got_pathlist_entry *new;
3420 	int i;
3421 
3422 	if (argc == 0) {
3423 		path = strdup("");
3424 		if (path == NULL)
3425 			return got_error_from_errno("strdup");
3426 		return got_pathlist_append(paths, path, NULL);
3427 	}
3428 
3429 	for (i = 0; i < argc; i++) {
3430 		err = got_worktree_resolve_path(&path, worktree, argv[i]);
3431 		if (err)
3432 			break;
3433 		err = got_pathlist_insert(&new, paths, path, NULL);
3434 		if (err || new == NULL /* duplicate */) {
3435 			free(path);
3436 			if (err)
3437 				break;
3438 		}
3439 	}
3440 
3441 	return err;
3442 }
3443 
3444 static const struct got_error *
3445 wrap_not_worktree_error(const struct got_error *orig_err,
3446     const char *cmdname, const char *path)
3447 {
3448 	const struct got_error *err;
3449 	struct got_repository *repo;
3450 	static char msg[512];
3451 	int *pack_fds = NULL;
3452 
3453 	err = got_repo_pack_fds_open(&pack_fds);
3454 	if (err)
3455 		return err;
3456 
3457 	err = got_repo_open(&repo, path, NULL, pack_fds);
3458 	if (err)
3459 		return orig_err;
3460 
3461 	snprintf(msg, sizeof(msg),
3462 	    "'got %s' needs a work tree in addition to a git repository\n"
3463 	    "Work trees can be checked out from this Git repository with "
3464 	    "'got checkout'.\n"
3465 	    "The got(1) manual page contains more information.", cmdname);
3466 	err = got_error_msg(GOT_ERR_NOT_WORKTREE, msg);
3467 	if (repo) {
3468 		const struct got_error *close_err = got_repo_close(repo);
3469 		if (close_err == NULL)
3470 			err = close_err;
3471 	}
3472 	if (pack_fds) {
3473 		const struct got_error *pack_err =
3474 		    got_repo_pack_fds_close(pack_fds);
3475 		if (err == NULL)
3476 			err = pack_err;
3477 	}
3478 	return err;
3479 }
3480 
3481 static const struct got_error *
3482 cmd_update(int argc, char *argv[])
3483 {
3484 	const struct got_error *error = NULL;
3485 	struct got_repository *repo = NULL;
3486 	struct got_worktree *worktree = NULL;
3487 	char *worktree_path = NULL;
3488 	struct got_object_id *commit_id = NULL;
3489 	char *commit_id_str = NULL;
3490 	const char *branch_name = NULL;
3491 	struct got_reference *head_ref = NULL;
3492 	struct got_pathlist_head paths;
3493 	struct got_pathlist_entry *pe;
3494 	int ch, verbosity = 0;
3495 	struct got_update_progress_arg upa;
3496 	int *pack_fds = NULL;
3497 
3498 	TAILQ_INIT(&paths);
3499 
3500 #ifndef PROFILE
3501 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
3502 	    "unveil", NULL) == -1)
3503 		err(1, "pledge");
3504 #endif
3505 
3506 	while ((ch = getopt(argc, argv, "b:c:q")) != -1) {
3507 		switch (ch) {
3508 		case 'b':
3509 			branch_name = optarg;
3510 			break;
3511 		case 'c':
3512 			commit_id_str = strdup(optarg);
3513 			if (commit_id_str == NULL)
3514 				return got_error_from_errno("strdup");
3515 			break;
3516 		case 'q':
3517 			verbosity = -1;
3518 			break;
3519 		default:
3520 			usage_update();
3521 			/* NOTREACHED */
3522 		}
3523 	}
3524 
3525 	argc -= optind;
3526 	argv += optind;
3527 
3528 	worktree_path = getcwd(NULL, 0);
3529 	if (worktree_path == NULL) {
3530 		error = got_error_from_errno("getcwd");
3531 		goto done;
3532 	}
3533 
3534 	error = got_repo_pack_fds_open(&pack_fds);
3535 	if (error != NULL)
3536 		goto done;
3537 
3538 	error = got_worktree_open(&worktree, worktree_path);
3539 	if (error) {
3540 		if (error->code == GOT_ERR_NOT_WORKTREE)
3541 			error = wrap_not_worktree_error(error, "update",
3542 			    worktree_path);
3543 		goto done;
3544 	}
3545 
3546 	error = check_rebase_or_histedit_in_progress(worktree);
3547 	if (error)
3548 		goto done;
3549 
3550 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
3551 	    NULL, pack_fds);
3552 	if (error != NULL)
3553 		goto done;
3554 
3555 	error = apply_unveil(got_repo_get_path(repo), 0,
3556 	    got_worktree_get_root_path(worktree));
3557 	if (error)
3558 		goto done;
3559 
3560 	error = check_merge_in_progress(worktree, repo);
3561 	if (error)
3562 		goto done;
3563 
3564 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
3565 	if (error)
3566 		goto done;
3567 
3568 	error = got_ref_open(&head_ref, repo, branch_name ? branch_name :
3569 	    got_worktree_get_head_ref_name(worktree), 0);
3570 	if (error != NULL)
3571 		goto done;
3572 	if (commit_id_str == NULL) {
3573 		error = got_ref_resolve(&commit_id, repo, head_ref);
3574 		if (error != NULL)
3575 			goto done;
3576 		error = got_object_id_str(&commit_id_str, commit_id);
3577 		if (error != NULL)
3578 			goto done;
3579 	} else {
3580 		struct got_reflist_head refs;
3581 		TAILQ_INIT(&refs);
3582 		error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name,
3583 		    NULL);
3584 		if (error)
3585 			goto done;
3586 		error = got_repo_match_object_id(&commit_id, NULL,
3587 		    commit_id_str, GOT_OBJ_TYPE_COMMIT, &refs, repo);
3588 		got_ref_list_free(&refs);
3589 		free(commit_id_str);
3590 		commit_id_str = NULL;
3591 		if (error)
3592 			goto done;
3593 		error = got_object_id_str(&commit_id_str, commit_id);
3594 		if (error)
3595 			goto done;
3596 	}
3597 
3598 	if (branch_name) {
3599 		struct got_object_id *head_commit_id;
3600 		TAILQ_FOREACH(pe, &paths, entry) {
3601 			if (pe->path_len == 0)
3602 				continue;
3603 			error = got_error_msg(GOT_ERR_BAD_PATH,
3604 			    "switching between branches requires that "
3605 			    "the entire work tree gets updated");
3606 			goto done;
3607 		}
3608 		error = got_ref_resolve(&head_commit_id, repo, head_ref);
3609 		if (error)
3610 			goto done;
3611 		error = check_linear_ancestry(commit_id, head_commit_id, 0,
3612 		    repo);
3613 		free(head_commit_id);
3614 		if (error != NULL)
3615 			goto done;
3616 		error = check_same_branch(commit_id, head_ref, NULL, repo);
3617 		if (error)
3618 			goto done;
3619 		error = switch_head_ref(head_ref, commit_id, worktree, repo);
3620 		if (error)
3621 			goto done;
3622 	} else {
3623 		error = check_linear_ancestry(commit_id,
3624 		    got_worktree_get_base_commit_id(worktree), 0, repo);
3625 		if (error != NULL) {
3626 			if (error->code == GOT_ERR_ANCESTRY)
3627 				error = got_error(GOT_ERR_BRANCH_MOVED);
3628 			goto done;
3629 		}
3630 		error = check_same_branch(commit_id, head_ref, NULL, repo);
3631 		if (error)
3632 			goto done;
3633 	}
3634 
3635 	if (got_object_id_cmp(got_worktree_get_base_commit_id(worktree),
3636 	    commit_id) != 0) {
3637 		error = got_worktree_set_base_commit_id(worktree, repo,
3638 		    commit_id);
3639 		if (error)
3640 			goto done;
3641 	}
3642 
3643 	memset(&upa, 0, sizeof(upa));
3644 	upa.verbosity = verbosity;
3645 	error = got_worktree_checkout_files(worktree, &paths, repo,
3646 	    update_progress, &upa, check_cancelled, NULL);
3647 	if (error != NULL)
3648 		goto done;
3649 
3650 	if (upa.did_something) {
3651 		printf("Updated to %s: %s\n",
3652 		    got_worktree_get_head_ref_name(worktree), commit_id_str);
3653 	} else
3654 		printf("Already up-to-date\n");
3655 
3656 	print_update_progress_stats(&upa);
3657 done:
3658 	if (pack_fds) {
3659 		const struct got_error *pack_err =
3660 		    got_repo_pack_fds_close(pack_fds);
3661 		if (error == NULL)
3662 			error = pack_err;
3663 	}
3664 	if (repo) {
3665 		const struct got_error *close_err = got_repo_close(repo);
3666 		if (error == NULL)
3667 			error = close_err;
3668 	}
3669 	free(worktree_path);
3670 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_PATH);
3671 	free(commit_id);
3672 	free(commit_id_str);
3673 	return error;
3674 }
3675 
3676 static const struct got_error *
3677 diff_blobs(struct got_object_id *blob_id1, struct got_object_id *blob_id2,
3678     const char *path, int diff_context, int ignore_whitespace,
3679     int force_text_diff, struct got_diffstat_cb_arg *dsa,
3680     struct got_repository *repo, FILE *outfile)
3681 {
3682 	const struct got_error *err = NULL;
3683 	struct got_blob_object *blob1 = NULL, *blob2 = NULL;
3684 	FILE *f1 = NULL, *f2 = NULL;
3685 	int fd1 = -1, fd2 = -1;
3686 
3687 	fd1 = got_opentempfd();
3688 	if (fd1 == -1)
3689 		return got_error_from_errno("got_opentempfd");
3690 	fd2 = got_opentempfd();
3691 	if (fd2 == -1) {
3692 		err = got_error_from_errno("got_opentempfd");
3693 		goto done;
3694 	}
3695 
3696 	if (blob_id1) {
3697 		err = got_object_open_as_blob(&blob1, repo, blob_id1, 8192,
3698 		    fd1);
3699 		if (err)
3700 			goto done;
3701 	}
3702 
3703 	err = got_object_open_as_blob(&blob2, repo, blob_id2, 8192, fd2);
3704 	if (err)
3705 		goto done;
3706 
3707 	f1 = got_opentemp();
3708 	if (f1 == NULL) {
3709 		err = got_error_from_errno("got_opentemp");
3710 		goto done;
3711 	}
3712 	f2 = got_opentemp();
3713 	if (f2 == NULL) {
3714 		err = got_error_from_errno("got_opentemp");
3715 		goto done;
3716 	}
3717 
3718 	while (path[0] == '/')
3719 		path++;
3720 	err = got_diff_blob(NULL, NULL, blob1, blob2, f1, f2, path, path,
3721 	    GOT_DIFF_ALGORITHM_PATIENCE, diff_context, ignore_whitespace,
3722 	    force_text_diff, dsa, outfile);
3723 done:
3724 	if (fd1 != -1 && close(fd1) == -1 && err == NULL)
3725 		err = got_error_from_errno("close");
3726 	if (blob1)
3727 		got_object_blob_close(blob1);
3728 	if (fd2 != -1 && close(fd2) == -1 && err == NULL)
3729 		err = got_error_from_errno("close");
3730 	if (blob2)
3731 		got_object_blob_close(blob2);
3732 	if (f1 && fclose(f1) == EOF && err == NULL)
3733 		err = got_error_from_errno("fclose");
3734 	if (f2 && fclose(f2) == EOF && err == NULL)
3735 		err = got_error_from_errno("fclose");
3736 	return err;
3737 }
3738 
3739 static const struct got_error *
3740 diff_trees(struct got_object_id *tree_id1, struct got_object_id *tree_id2,
3741     const char *path, int diff_context, int ignore_whitespace,
3742     int force_text_diff, struct got_diffstat_cb_arg *dsa,
3743     struct got_repository *repo, FILE *outfile)
3744 {
3745 	const struct got_error *err = NULL;
3746 	struct got_tree_object *tree1 = NULL, *tree2 = NULL;
3747 	struct got_diff_blob_output_unidiff_arg arg;
3748 	FILE *f1 = NULL, *f2 = NULL;
3749 	int fd1 = -1, fd2 = -1;
3750 
3751 	if (tree_id1) {
3752 		err = got_object_open_as_tree(&tree1, repo, tree_id1);
3753 		if (err)
3754 			goto done;
3755 		fd1 = got_opentempfd();
3756 		if (fd1 == -1) {
3757 			err = got_error_from_errno("got_opentempfd");
3758 			goto done;
3759 		}
3760 	}
3761 
3762 	err = got_object_open_as_tree(&tree2, repo, tree_id2);
3763 	if (err)
3764 		goto done;
3765 
3766 	f1 = got_opentemp();
3767 	if (f1 == NULL) {
3768 		err = got_error_from_errno("got_opentemp");
3769 		goto done;
3770 	}
3771 
3772 	f2 = got_opentemp();
3773 	if (f2 == NULL) {
3774 		err = got_error_from_errno("got_opentemp");
3775 		goto done;
3776 	}
3777 	fd2 = got_opentempfd();
3778 	if (fd2 == -1) {
3779 		err = got_error_from_errno("got_opentempfd");
3780 		goto done;
3781 	}
3782 	arg.diff_context = diff_context;
3783 	arg.ignore_whitespace = ignore_whitespace;
3784 	arg.force_text_diff = force_text_diff;
3785 	arg.diffstat = dsa;
3786 	arg.diff_algo = GOT_DIFF_ALGORITHM_PATIENCE;
3787 	arg.outfile = outfile;
3788 	arg.lines = NULL;
3789 	arg.nlines = 0;
3790 	while (path[0] == '/')
3791 		path++;
3792 	err = got_diff_tree(tree1, tree2, f1, f2, fd1, fd2, path, path, repo,
3793 	    got_diff_blob_output_unidiff, &arg, 1);
3794 done:
3795 	if (tree1)
3796 		got_object_tree_close(tree1);
3797 	if (tree2)
3798 		got_object_tree_close(tree2);
3799 	if (f1 && fclose(f1) == EOF && err == NULL)
3800 		err = got_error_from_errno("fclose");
3801 	if (f2 && fclose(f2) == EOF && err == NULL)
3802 		err = got_error_from_errno("fclose");
3803 	if (fd1 != -1 && close(fd1) == -1 && err == NULL)
3804 		err = got_error_from_errno("close");
3805 	if (fd2 != -1 && close(fd2) == -1 && err == NULL)
3806 		err = got_error_from_errno("close");
3807 	return err;
3808 }
3809 
3810 static const struct got_error *
3811 get_changed_paths(struct got_pathlist_head *paths,
3812     struct got_commit_object *commit, struct got_repository *repo,
3813     struct got_diffstat_cb_arg *dsa)
3814 {
3815 	const struct got_error *err = NULL;
3816 	struct got_object_id *tree_id1 = NULL, *tree_id2 = NULL;
3817 	struct got_tree_object *tree1 = NULL, *tree2 = NULL;
3818 	struct got_object_qid *qid;
3819 	got_diff_blob_cb cb = got_diff_tree_collect_changed_paths;
3820 	FILE *f1 = NULL, *f2 = NULL;
3821 	int fd1 = -1, fd2 = -1;
3822 
3823 	if (dsa) {
3824 		cb = got_diff_tree_compute_diffstat;
3825 
3826 		f1 = got_opentemp();
3827 		if (f1 == NULL) {
3828 			err = got_error_from_errno("got_opentemp");
3829 			goto done;
3830 		}
3831 		f2 = got_opentemp();
3832 		if (f2 == NULL) {
3833 			err = got_error_from_errno("got_opentemp");
3834 			goto done;
3835 		}
3836 		fd1 = got_opentempfd();
3837 		if (fd1 == -1) {
3838 			err = got_error_from_errno("got_opentempfd");
3839 			goto done;
3840 		}
3841 		fd2 = got_opentempfd();
3842 		if (fd2 == -1) {
3843 			err = got_error_from_errno("got_opentempfd");
3844 			goto done;
3845 		}
3846 	}
3847 
3848 	qid = STAILQ_FIRST(got_object_commit_get_parent_ids(commit));
3849 	if (qid != NULL) {
3850 		struct got_commit_object *pcommit;
3851 		err = got_object_open_as_commit(&pcommit, repo,
3852 		    &qid->id);
3853 		if (err)
3854 			return err;
3855 
3856 		tree_id1 = got_object_id_dup(
3857 		    got_object_commit_get_tree_id(pcommit));
3858 		if (tree_id1 == NULL) {
3859 			got_object_commit_close(pcommit);
3860 			return got_error_from_errno("got_object_id_dup");
3861 		}
3862 		got_object_commit_close(pcommit);
3863 
3864 	}
3865 
3866 	if (tree_id1) {
3867 		err = got_object_open_as_tree(&tree1, repo, tree_id1);
3868 		if (err)
3869 			goto done;
3870 	}
3871 
3872 	tree_id2 = got_object_commit_get_tree_id(commit);
3873 	err = got_object_open_as_tree(&tree2, repo, tree_id2);
3874 	if (err)
3875 		goto done;
3876 
3877 	err = got_diff_tree(tree1, tree2, f1, f2, fd1, fd2, "", "", repo,
3878 	    cb, dsa ? (void *)dsa : paths, dsa ? 1 : 0);
3879 done:
3880 	if (tree1)
3881 		got_object_tree_close(tree1);
3882 	if (tree2)
3883 		got_object_tree_close(tree2);
3884 	if (fd1 != -1 && close(fd1) == -1 && err == NULL)
3885 		err = got_error_from_errno("close");
3886 	if (fd2 != -1 && close(fd2) == -1 && err == NULL)
3887 		err = got_error_from_errno("close");
3888 	if (f1 && fclose(f1) == EOF && err == NULL)
3889 		err = got_error_from_errno("fclose");
3890 	if (f2 && fclose(f2) == EOF && err == NULL)
3891 		err = got_error_from_errno("fclose");
3892 	free(tree_id1);
3893 	return err;
3894 }
3895 
3896 static const struct got_error *
3897 print_patch(struct got_commit_object *commit, struct got_object_id *id,
3898     const char *path, int diff_context, struct got_diffstat_cb_arg *dsa,
3899     struct got_repository *repo, FILE *outfile)
3900 {
3901 	const struct got_error *err = NULL;
3902 	struct got_commit_object *pcommit = NULL;
3903 	char *id_str1 = NULL, *id_str2 = NULL;
3904 	struct got_object_id *obj_id1 = NULL, *obj_id2 = NULL;
3905 	struct got_object_qid *qid;
3906 
3907 	qid = STAILQ_FIRST(got_object_commit_get_parent_ids(commit));
3908 	if (qid != NULL) {
3909 		err = got_object_open_as_commit(&pcommit, repo,
3910 		    &qid->id);
3911 		if (err)
3912 			return err;
3913 		err = got_object_id_str(&id_str1, &qid->id);
3914 		if (err)
3915 			goto done;
3916 	}
3917 
3918 	err = got_object_id_str(&id_str2, id);
3919 	if (err)
3920 		goto done;
3921 
3922 	if (path && path[0] != '\0') {
3923 		int obj_type;
3924 		err = got_object_id_by_path(&obj_id2, repo, commit, path);
3925 		if (err)
3926 			goto done;
3927 		if (pcommit) {
3928 			err = got_object_id_by_path(&obj_id1, repo,
3929 			    pcommit, path);
3930 			if (err) {
3931 				if (err->code != GOT_ERR_NO_TREE_ENTRY) {
3932 					free(obj_id2);
3933 					goto done;
3934 				}
3935 			}
3936 		}
3937 		err = got_object_get_type(&obj_type, repo, obj_id2);
3938 		if (err) {
3939 			free(obj_id2);
3940 			goto done;
3941 		}
3942 		fprintf(outfile,
3943 		    "diff %s %s\n", id_str1 ? id_str1 : "/dev/null", id_str2);
3944 		fprintf(outfile, "commit - %s\n",
3945 		    id_str1 ? id_str1 : "/dev/null");
3946 		fprintf(outfile, "commit + %s\n", id_str2);
3947 		switch (obj_type) {
3948 		case GOT_OBJ_TYPE_BLOB:
3949 			err = diff_blobs(obj_id1, obj_id2, path, diff_context,
3950 			    0, 0, dsa, repo, outfile);
3951 			break;
3952 		case GOT_OBJ_TYPE_TREE:
3953 			err = diff_trees(obj_id1, obj_id2, path, diff_context,
3954 			    0, 0, dsa, repo, outfile);
3955 			break;
3956 		default:
3957 			err = got_error(GOT_ERR_OBJ_TYPE);
3958 			break;
3959 		}
3960 		free(obj_id1);
3961 		free(obj_id2);
3962 	} else {
3963 		obj_id2 = got_object_commit_get_tree_id(commit);
3964 		if (pcommit)
3965 			obj_id1 = got_object_commit_get_tree_id(pcommit);
3966 		fprintf(outfile,
3967 		    "diff %s %s\n", id_str1 ? id_str1 : "/dev/null", id_str2);
3968 		fprintf(outfile, "commit - %s\n",
3969 		    id_str1 ? id_str1 : "/dev/null");
3970 		fprintf(outfile, "commit + %s\n", id_str2);
3971 		err = diff_trees(obj_id1, obj_id2, "", diff_context, 0, 0,
3972 		    dsa, repo, outfile);
3973 	}
3974 done:
3975 	free(id_str1);
3976 	free(id_str2);
3977 	if (pcommit)
3978 		got_object_commit_close(pcommit);
3979 	return err;
3980 }
3981 
3982 static char *
3983 get_datestr(time_t *time, char *datebuf)
3984 {
3985 	struct tm mytm, *tm;
3986 	char *p, *s;
3987 
3988 	tm = gmtime_r(time, &mytm);
3989 	if (tm == NULL)
3990 		return NULL;
3991 	s = asctime_r(tm, datebuf);
3992 	if (s == NULL)
3993 		return NULL;
3994 	p = strchr(s, '\n');
3995 	if (p)
3996 		*p = '\0';
3997 	return s;
3998 }
3999 
4000 static const struct got_error *
4001 match_commit(int *have_match, struct got_object_id *id,
4002     struct got_commit_object *commit, regex_t *regex)
4003 {
4004 	const struct got_error *err = NULL;
4005 	regmatch_t regmatch;
4006 	char *id_str = NULL, *logmsg = NULL;
4007 
4008 	*have_match = 0;
4009 
4010 	err = got_object_id_str(&id_str, id);
4011 	if (err)
4012 		return err;
4013 
4014 	err = got_object_commit_get_logmsg(&logmsg, commit);
4015 	if (err)
4016 		goto done;
4017 
4018 	if (regexec(regex, got_object_commit_get_author(commit), 1,
4019 	    &regmatch, 0) == 0 ||
4020 	    regexec(regex, got_object_commit_get_committer(commit), 1,
4021 	    &regmatch, 0) == 0 ||
4022 	    regexec(regex, id_str, 1, &regmatch, 0) == 0 ||
4023 	    regexec(regex, logmsg, 1, &regmatch, 0) == 0)
4024 		*have_match = 1;
4025 done:
4026 	free(id_str);
4027 	free(logmsg);
4028 	return err;
4029 }
4030 
4031 static void
4032 match_changed_paths(int *have_match, struct got_pathlist_head *changed_paths,
4033     regex_t *regex)
4034 {
4035 	regmatch_t regmatch;
4036 	struct got_pathlist_entry *pe;
4037 
4038 	*have_match = 0;
4039 
4040 	TAILQ_FOREACH(pe, changed_paths, entry) {
4041 		if (regexec(regex, pe->path, 1, &regmatch, 0) == 0) {
4042 			*have_match = 1;
4043 			break;
4044 		}
4045 	}
4046 }
4047 
4048 static const struct got_error *
4049 match_patch(int *have_match, struct got_commit_object *commit,
4050     struct got_object_id *id, const char *path, int diff_context,
4051     struct got_repository *repo, regex_t *regex, FILE *f)
4052 {
4053 	const struct got_error *err = NULL;
4054 	char *line = NULL;
4055 	size_t linesize = 0;
4056 	regmatch_t regmatch;
4057 
4058 	*have_match = 0;
4059 
4060 	err = got_opentemp_truncate(f);
4061 	if (err)
4062 		return err;
4063 
4064 	err = print_patch(commit, id, path, diff_context, NULL, repo, f);
4065 	if (err)
4066 		goto done;
4067 
4068 	if (fseeko(f, 0L, SEEK_SET) == -1) {
4069 		err = got_error_from_errno("fseeko");
4070 		goto done;
4071 	}
4072 
4073 	while (getline(&line, &linesize, f) != -1) {
4074 		if (regexec(regex, line, 1, &regmatch, 0) == 0) {
4075 			*have_match = 1;
4076 			break;
4077 		}
4078 	}
4079 done:
4080 	free(line);
4081 	return err;
4082 }
4083 
4084 #define GOT_COMMIT_SEP_STR "-----------------------------------------------\n"
4085 
4086 static const struct got_error*
4087 build_refs_str(char **refs_str, struct got_reflist_head *refs,
4088     struct got_object_id *id, struct got_repository *repo,
4089     int local_only)
4090 {
4091 	static const struct got_error *err = NULL;
4092 	struct got_reflist_entry *re;
4093 	char *s;
4094 	const char *name;
4095 
4096 	*refs_str = NULL;
4097 
4098 	TAILQ_FOREACH(re, refs, entry) {
4099 		struct got_tag_object *tag = NULL;
4100 		struct got_object_id *ref_id;
4101 		int cmp;
4102 
4103 		name = got_ref_get_name(re->ref);
4104 		if (strcmp(name, GOT_REF_HEAD) == 0)
4105 			continue;
4106 		if (strncmp(name, "refs/", 5) == 0)
4107 			name += 5;
4108 		if (strncmp(name, "got/", 4) == 0)
4109 			continue;
4110 		if (strncmp(name, "heads/", 6) == 0)
4111 			name += 6;
4112 		if (strncmp(name, "remotes/", 8) == 0) {
4113 			if (local_only)
4114 				continue;
4115 			name += 8;
4116 			s = strstr(name, "/" GOT_REF_HEAD);
4117 			if (s != NULL && s[strlen(s)] == '\0')
4118 				continue;
4119 		}
4120 		err = got_ref_resolve(&ref_id, repo, re->ref);
4121 		if (err)
4122 			break;
4123 		if (strncmp(name, "tags/", 5) == 0) {
4124 			err = got_object_open_as_tag(&tag, repo, ref_id);
4125 			if (err) {
4126 				if (err->code != GOT_ERR_OBJ_TYPE) {
4127 					free(ref_id);
4128 					break;
4129 				}
4130 				/* Ref points at something other than a tag. */
4131 				err = NULL;
4132 				tag = NULL;
4133 			}
4134 		}
4135 		cmp = got_object_id_cmp(tag ?
4136 		    got_object_tag_get_object_id(tag) : ref_id, id);
4137 		free(ref_id);
4138 		if (tag)
4139 			got_object_tag_close(tag);
4140 		if (cmp != 0)
4141 			continue;
4142 		s = *refs_str;
4143 		if (asprintf(refs_str, "%s%s%s", s ? s : "",
4144 		    s ? ", " : "", name) == -1) {
4145 			err = got_error_from_errno("asprintf");
4146 			free(s);
4147 			*refs_str = NULL;
4148 			break;
4149 		}
4150 		free(s);
4151 	}
4152 
4153 	return err;
4154 }
4155 
4156 static const struct got_error *
4157 print_commit_oneline(struct got_commit_object *commit, struct got_object_id *id,
4158     struct got_repository *repo, struct got_reflist_object_id_map *refs_idmap)
4159 {
4160 	const struct got_error *err = NULL;
4161 	char *ref_str = NULL, *id_str = NULL, *logmsg0 = NULL;
4162 	char *comma, *s, *nl;
4163 	struct got_reflist_head *refs;
4164 	char datebuf[12]; /* YYYY-MM-DD + SPACE + NUL */
4165 	struct tm tm;
4166 	time_t committer_time;
4167 
4168 	refs = got_reflist_object_id_map_lookup(refs_idmap, id);
4169 	if (refs) {
4170 		err = build_refs_str(&ref_str, refs, id, repo, 1);
4171 		if (err)
4172 			return err;
4173 
4174 		/* Display the first matching ref only. */
4175 		if (ref_str && (comma = strchr(ref_str, ',')) != NULL)
4176 			*comma = '\0';
4177 	}
4178 
4179 	if (ref_str == NULL) {
4180 		err = got_object_id_str(&id_str, id);
4181 		if (err)
4182 			return err;
4183 	}
4184 
4185 	committer_time = got_object_commit_get_committer_time(commit);
4186 	if (gmtime_r(&committer_time, &tm) == NULL) {
4187 		err = got_error_from_errno("gmtime_r");
4188 		goto done;
4189 	}
4190 	if (strftime(datebuf, sizeof(datebuf), "%G-%m-%d ", &tm) == 0) {
4191 		err = got_error(GOT_ERR_NO_SPACE);
4192 		goto done;
4193 	}
4194 
4195 	err = got_object_commit_get_logmsg(&logmsg0, commit);
4196 	if (err)
4197 		goto done;
4198 
4199 	s = logmsg0;
4200 	while (isspace((unsigned char)s[0]))
4201 		s++;
4202 
4203 	nl = strchr(s, '\n');
4204 	if (nl) {
4205 		*nl = '\0';
4206 	}
4207 
4208 	if (ref_str)
4209 		printf("%s%-7s %s\n", datebuf, ref_str, s);
4210 	else
4211 		printf("%s%.7s %s\n", datebuf, id_str, s);
4212 
4213 	if (fflush(stdout) != 0 && err == NULL)
4214 		err = got_error_from_errno("fflush");
4215 done:
4216 	free(id_str);
4217 	free(ref_str);
4218 	free(logmsg0);
4219 	return err;
4220 }
4221 
4222 static const struct got_error *
4223 print_diffstat(struct got_diffstat_cb_arg *dsa, const char *header)
4224 {
4225 	struct got_pathlist_entry *pe;
4226 
4227 	if (header != NULL)
4228 		printf("%s\n", header);
4229 
4230 	TAILQ_FOREACH(pe, dsa->paths, entry) {
4231 		struct got_diff_changed_path *cp = pe->data;
4232 		int pad = dsa->max_path_len - pe->path_len + 1;
4233 
4234 		printf(" %c  %s%*c | %*d+ %*d-\n", cp->status, pe->path, pad,
4235 		    ' ', dsa->add_cols + 1, cp->add, dsa->rm_cols + 1, cp->rm);
4236 	}
4237 	printf("\n%d file%s changed, %d insertion%s(+), %d deletion%s(-)\n\n",
4238 	    dsa->nfiles, dsa->nfiles > 1 ? "s" : "", dsa->ins,
4239 	    dsa->ins != 1 ? "s" : "", dsa->del, dsa->del != 1 ? "s" : "");
4240 
4241 	if (fflush(stdout) != 0)
4242 		return got_error_from_errno("fflush");
4243 
4244 	return NULL;
4245 }
4246 
4247 static const struct got_error *
4248 printfile(FILE *f)
4249 {
4250 	char	buf[8192];
4251 	size_t	r;
4252 
4253 	if (fseeko(f, 0L, SEEK_SET) == -1)
4254 		return got_error_from_errno("fseek");
4255 
4256 	for (;;) {
4257 		r = fread(buf, 1, sizeof(buf), f);
4258 		if (r == 0) {
4259 			if (ferror(f))
4260 				return got_error_from_errno("fread");
4261 			if (feof(f))
4262 				break;
4263 		}
4264 		if (fwrite(buf, 1, r, stdout) != r)
4265 			return got_ferror(stdout, GOT_ERR_IO);
4266 	}
4267 
4268 	return NULL;
4269 }
4270 
4271 static const struct got_error *
4272 print_commit(struct got_commit_object *commit, struct got_object_id *id,
4273     struct got_repository *repo, const char *path,
4274     struct got_pathlist_head *changed_paths,
4275     struct got_diffstat_cb_arg *diffstat, int show_patch, int diff_context,
4276     struct got_reflist_object_id_map *refs_idmap, const char *custom_refs_str,
4277     const char *prefix)
4278 {
4279 	const struct got_error *err = NULL;
4280 	FILE *f = NULL;
4281 	char *id_str, *datestr, *logmsg0, *logmsg, *line;
4282 	char datebuf[26];
4283 	time_t committer_time;
4284 	const char *author, *committer;
4285 	char *refs_str = NULL;
4286 
4287 	err = got_object_id_str(&id_str, id);
4288 	if (err)
4289 		return err;
4290 
4291 	if (custom_refs_str == NULL) {
4292 		struct got_reflist_head *refs;
4293 		refs = got_reflist_object_id_map_lookup(refs_idmap, id);
4294 		if (refs) {
4295 			err = build_refs_str(&refs_str, refs, id, repo, 0);
4296 			if (err)
4297 				goto done;
4298 		}
4299 	}
4300 
4301 	printf(GOT_COMMIT_SEP_STR);
4302 	if (custom_refs_str)
4303 		printf("%s %s (%s)\n", prefix ? prefix : "commit", id_str,
4304 		    custom_refs_str);
4305 	else
4306 		printf("%s %s%s%s%s\n", prefix ? prefix : "commit", id_str,
4307 		    refs_str ? " (" : "", refs_str ? refs_str : "",
4308 		    refs_str ? ")" : "");
4309 	free(id_str);
4310 	id_str = NULL;
4311 	free(refs_str);
4312 	refs_str = NULL;
4313 	printf("from: %s\n", got_object_commit_get_author(commit));
4314 	author = got_object_commit_get_author(commit);
4315 	committer = got_object_commit_get_committer(commit);
4316 	if (strcmp(author, committer) != 0)
4317 		printf("via: %s\n", committer);
4318 	committer_time = got_object_commit_get_committer_time(commit);
4319 	datestr = get_datestr(&committer_time, datebuf);
4320 	if (datestr)
4321 		printf("date: %s UTC\n", datestr);
4322 	if (got_object_commit_get_nparents(commit) > 1) {
4323 		const struct got_object_id_queue *parent_ids;
4324 		struct got_object_qid *qid;
4325 		int n = 1;
4326 		parent_ids = got_object_commit_get_parent_ids(commit);
4327 		STAILQ_FOREACH(qid, parent_ids, entry) {
4328 			err = got_object_id_str(&id_str, &qid->id);
4329 			if (err)
4330 				goto done;
4331 			printf("parent %d: %s\n", n++, id_str);
4332 			free(id_str);
4333 			id_str = NULL;
4334 		}
4335 	}
4336 
4337 	err = got_object_commit_get_logmsg(&logmsg0, commit);
4338 	if (err)
4339 		goto done;
4340 
4341 	logmsg = logmsg0;
4342 	do {
4343 		line = strsep(&logmsg, "\n");
4344 		if (line)
4345 			printf(" %s\n", line);
4346 	} while (line);
4347 	free(logmsg0);
4348 
4349 	if (changed_paths && diffstat == NULL) {
4350 		struct got_pathlist_entry *pe;
4351 
4352 		TAILQ_FOREACH(pe, changed_paths, entry) {
4353 			struct got_diff_changed_path *cp = pe->data;
4354 
4355 			printf(" %c  %s\n", cp->status, pe->path);
4356 		}
4357 		printf("\n");
4358 	}
4359 	if (show_patch) {
4360 		if (diffstat) {
4361 			f = got_opentemp();
4362 			if (f == NULL) {
4363 				err = got_error_from_errno("got_opentemp");
4364 				goto done;
4365 			}
4366 		}
4367 
4368 		err = print_patch(commit, id, path, diff_context, diffstat,
4369 		    repo, diffstat == NULL ? stdout : f);
4370 		if (err)
4371 			goto done;
4372 	}
4373 	if (diffstat) {
4374 		err = print_diffstat(diffstat, NULL);
4375 		if (err)
4376 			goto done;
4377 		if (show_patch) {
4378 			err = printfile(f);
4379 			if (err)
4380 				goto done;
4381 		}
4382 	}
4383 	if (show_patch)
4384 		printf("\n");
4385 
4386 	if (fflush(stdout) != 0 && err == NULL)
4387 		err = got_error_from_errno("fflush");
4388 done:
4389 	if (f && fclose(f) == EOF && err == NULL)
4390 		err = got_error_from_errno("fclose");
4391 	free(id_str);
4392 	free(refs_str);
4393 	return err;
4394 }
4395 
4396 static const struct got_error *
4397 print_commits(struct got_object_id *root_id, struct got_object_id *end_id,
4398     struct got_repository *repo, const char *path, int show_changed_paths,
4399     int show_diffstat, int show_patch, const char *search_pattern,
4400     int diff_context, int limit, int log_branches, int reverse_display_order,
4401     struct got_reflist_object_id_map *refs_idmap, int one_line,
4402     FILE *tmpfile)
4403 {
4404 	const struct got_error *err;
4405 	struct got_commit_graph *graph;
4406 	regex_t regex;
4407 	int have_match;
4408 	struct got_object_id_queue reversed_commits;
4409 	struct got_object_qid *qid;
4410 	struct got_commit_object *commit;
4411 	struct got_pathlist_head changed_paths;
4412 
4413 	STAILQ_INIT(&reversed_commits);
4414 	TAILQ_INIT(&changed_paths);
4415 
4416 	if (search_pattern && regcomp(&regex, search_pattern,
4417 	    REG_EXTENDED | REG_NOSUB | REG_NEWLINE))
4418 		return got_error_msg(GOT_ERR_REGEX, search_pattern);
4419 
4420 	err = got_commit_graph_open(&graph, path, !log_branches);
4421 	if (err)
4422 		return err;
4423 	err = got_commit_graph_iter_start(graph, root_id, repo,
4424 	    check_cancelled, NULL);
4425 	if (err)
4426 		goto done;
4427 	for (;;) {
4428 		struct got_object_id id;
4429 		struct got_diffstat_cb_arg dsa = { 0, 0, 0, 0, 0, 0,
4430 		    &changed_paths, 0, 0, GOT_DIFF_ALGORITHM_PATIENCE };
4431 
4432 		if (sigint_received || sigpipe_received)
4433 			break;
4434 
4435 		err = got_commit_graph_iter_next(&id, graph, repo,
4436 		    check_cancelled, NULL);
4437 		if (err) {
4438 			if (err->code == GOT_ERR_ITER_COMPLETED)
4439 				err = NULL;
4440 			break;
4441 		}
4442 
4443 		err = got_object_open_as_commit(&commit, repo, &id);
4444 		if (err)
4445 			break;
4446 
4447 		if ((show_changed_paths || (show_diffstat && !show_patch))
4448 		    && !reverse_display_order) {
4449 			err = get_changed_paths(&changed_paths, commit, repo,
4450 			    show_diffstat ? &dsa : NULL);
4451 			if (err)
4452 				break;
4453 		}
4454 
4455 		if (search_pattern) {
4456 			err = match_commit(&have_match, &id, commit, &regex);
4457 			if (err) {
4458 				got_object_commit_close(commit);
4459 				break;
4460 			}
4461 			if (have_match == 0 && show_changed_paths)
4462 				match_changed_paths(&have_match,
4463 				    &changed_paths, &regex);
4464 			if (have_match == 0 && show_patch) {
4465 				err = match_patch(&have_match, commit, &id,
4466 				    path, diff_context, repo, &regex, tmpfile);
4467 				if (err)
4468 					break;
4469 			}
4470 			if (have_match == 0) {
4471 				got_object_commit_close(commit);
4472 				got_pathlist_free(&changed_paths,
4473 				    GOT_PATHLIST_FREE_ALL);
4474 				continue;
4475 			}
4476 		}
4477 
4478 		if (reverse_display_order) {
4479 			err = got_object_qid_alloc(&qid, &id);
4480 			if (err)
4481 				break;
4482 			STAILQ_INSERT_HEAD(&reversed_commits, qid, entry);
4483 			got_object_commit_close(commit);
4484 		} else {
4485 			if (one_line)
4486 				err = print_commit_oneline(commit, &id,
4487 				    repo, refs_idmap);
4488 			else
4489 				err = print_commit(commit, &id, repo, path,
4490 				    (show_changed_paths || show_diffstat) ?
4491 				    &changed_paths : NULL,
4492 				    show_diffstat ? &dsa : NULL, show_patch,
4493 				    diff_context, refs_idmap, NULL, NULL);
4494 			got_object_commit_close(commit);
4495 			if (err)
4496 				break;
4497 		}
4498 		if ((limit && --limit == 0) ||
4499 		    (end_id && got_object_id_cmp(&id, end_id) == 0))
4500 			break;
4501 
4502 		got_pathlist_free(&changed_paths, GOT_PATHLIST_FREE_ALL);
4503 	}
4504 	if (reverse_display_order) {
4505 		STAILQ_FOREACH(qid, &reversed_commits, entry) {
4506 			struct got_diffstat_cb_arg dsa = { 0, 0, 0, 0, 0, 0,
4507 			    &changed_paths, 0, 0, GOT_DIFF_ALGORITHM_PATIENCE };
4508 
4509 			err = got_object_open_as_commit(&commit, repo,
4510 			    &qid->id);
4511 			if (err)
4512 				break;
4513 			if (show_changed_paths ||
4514 			    (show_diffstat && !show_patch)) {
4515 				err = get_changed_paths(&changed_paths, commit,
4516 				    repo, show_diffstat ? &dsa : NULL);
4517 				if (err)
4518 					break;
4519 			}
4520 			if (one_line)
4521 				err = print_commit_oneline(commit, &qid->id,
4522 				    repo, refs_idmap);
4523 			else
4524 				err = print_commit(commit, &qid->id, repo, path,
4525 				    (show_changed_paths || show_diffstat) ?
4526 				    &changed_paths : NULL,
4527 				    show_diffstat ? &dsa : NULL, show_patch,
4528 				    diff_context, refs_idmap, NULL, NULL);
4529 			got_object_commit_close(commit);
4530 			if (err)
4531 				break;
4532 			got_pathlist_free(&changed_paths, GOT_PATHLIST_FREE_ALL);
4533 		}
4534 	}
4535 done:
4536 	while (!STAILQ_EMPTY(&reversed_commits)) {
4537 		qid = STAILQ_FIRST(&reversed_commits);
4538 		STAILQ_REMOVE_HEAD(&reversed_commits, entry);
4539 		got_object_qid_free(qid);
4540 	}
4541 	got_pathlist_free(&changed_paths, GOT_PATHLIST_FREE_ALL);
4542 	if (search_pattern)
4543 		regfree(&regex);
4544 	got_commit_graph_close(graph);
4545 	return err;
4546 }
4547 
4548 __dead static void
4549 usage_log(void)
4550 {
4551 	fprintf(stderr, "usage: %s log [-bdPpRs] [-C number] [-c commit] "
4552 	    "[-l N] [-r repository-path] [-S search-pattern] [-x commit] "
4553 	    "[path]\n", getprogname());
4554 	exit(1);
4555 }
4556 
4557 static int
4558 get_default_log_limit(void)
4559 {
4560 	const char *got_default_log_limit;
4561 	long long n;
4562 	const char *errstr;
4563 
4564 	got_default_log_limit = getenv("GOT_LOG_DEFAULT_LIMIT");
4565 	if (got_default_log_limit == NULL)
4566 		return 0;
4567 	n = strtonum(got_default_log_limit, 0, INT_MAX, &errstr);
4568 	if (errstr != NULL)
4569 		return 0;
4570 	return n;
4571 }
4572 
4573 static const struct got_error *
4574 cmd_log(int argc, char *argv[])
4575 {
4576 	const struct got_error *error;
4577 	struct got_repository *repo = NULL;
4578 	struct got_worktree *worktree = NULL;
4579 	struct got_object_id *start_id = NULL, *end_id = NULL;
4580 	char *repo_path = NULL, *path = NULL, *cwd = NULL, *in_repo_path = NULL;
4581 	const char *start_commit = NULL, *end_commit = NULL;
4582 	const char *search_pattern = NULL;
4583 	int diff_context = -1, ch;
4584 	int show_changed_paths = 0, show_patch = 0, limit = 0, log_branches = 0;
4585 	int show_diffstat = 0, reverse_display_order = 0, one_line = 0;
4586 	const char *errstr;
4587 	struct got_reflist_head refs;
4588 	struct got_reflist_object_id_map *refs_idmap = NULL;
4589 	FILE *tmpfile = NULL;
4590 	int *pack_fds = NULL;
4591 
4592 	TAILQ_INIT(&refs);
4593 
4594 #ifndef PROFILE
4595 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
4596 	    NULL)
4597 	    == -1)
4598 		err(1, "pledge");
4599 #endif
4600 
4601 	limit = get_default_log_limit();
4602 
4603 	while ((ch = getopt(argc, argv, "bC:c:dl:PpRr:S:sx:")) != -1) {
4604 		switch (ch) {
4605 		case 'b':
4606 			log_branches = 1;
4607 			break;
4608 		case 'C':
4609 			diff_context = strtonum(optarg, 0, GOT_DIFF_MAX_CONTEXT,
4610 			    &errstr);
4611 			if (errstr != NULL)
4612 				errx(1, "number of context lines is %s: %s",
4613 				    errstr, optarg);
4614 			break;
4615 		case 'c':
4616 			start_commit = optarg;
4617 			break;
4618 		case 'd':
4619 			show_diffstat = 1;
4620 			break;
4621 		case 'l':
4622 			limit = strtonum(optarg, 0, INT_MAX, &errstr);
4623 			if (errstr != NULL)
4624 				errx(1, "number of commits is %s: %s",
4625 				    errstr, optarg);
4626 			break;
4627 		case 'P':
4628 			show_changed_paths = 1;
4629 			break;
4630 		case 'p':
4631 			show_patch = 1;
4632 			break;
4633 		case 'R':
4634 			reverse_display_order = 1;
4635 			break;
4636 		case 'r':
4637 			repo_path = realpath(optarg, NULL);
4638 			if (repo_path == NULL)
4639 				return got_error_from_errno2("realpath",
4640 				    optarg);
4641 			got_path_strip_trailing_slashes(repo_path);
4642 			break;
4643 		case 'S':
4644 			search_pattern = optarg;
4645 			break;
4646 		case 's':
4647 			one_line = 1;
4648 			break;
4649 		case 'x':
4650 			end_commit = optarg;
4651 			break;
4652 		default:
4653 			usage_log();
4654 			/* NOTREACHED */
4655 		}
4656 	}
4657 
4658 	argc -= optind;
4659 	argv += optind;
4660 
4661 	if (diff_context == -1)
4662 		diff_context = 3;
4663 	else if (!show_patch)
4664 		errx(1, "-C requires -p");
4665 
4666 	if (one_line && (show_patch || show_changed_paths || show_diffstat))
4667 		errx(1, "cannot use -s with -d, -p or -P");
4668 
4669 	cwd = getcwd(NULL, 0);
4670 	if (cwd == NULL) {
4671 		error = got_error_from_errno("getcwd");
4672 		goto done;
4673 	}
4674 
4675 	error = got_repo_pack_fds_open(&pack_fds);
4676 	if (error != NULL)
4677 		goto done;
4678 
4679 	if (repo_path == NULL) {
4680 		error = got_worktree_open(&worktree, cwd);
4681 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
4682 			goto done;
4683 		error = NULL;
4684 	}
4685 
4686 	if (argc == 1) {
4687 		if (worktree) {
4688 			error = got_worktree_resolve_path(&path, worktree,
4689 			    argv[0]);
4690 			if (error)
4691 				goto done;
4692 		} else {
4693 			path = strdup(argv[0]);
4694 			if (path == NULL) {
4695 				error = got_error_from_errno("strdup");
4696 				goto done;
4697 			}
4698 		}
4699 	} else if (argc != 0)
4700 		usage_log();
4701 
4702 	if (repo_path == NULL) {
4703 		repo_path = worktree ?
4704 		    strdup(got_worktree_get_repo_path(worktree)) : strdup(cwd);
4705 	}
4706 	if (repo_path == NULL) {
4707 		error = got_error_from_errno("strdup");
4708 		goto done;
4709 	}
4710 
4711 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
4712 	if (error != NULL)
4713 		goto done;
4714 
4715 	error = apply_unveil(got_repo_get_path(repo), 1,
4716 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
4717 	if (error)
4718 		goto done;
4719 
4720 	error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name, NULL);
4721 	if (error)
4722 		goto done;
4723 
4724 	error = got_reflist_object_id_map_create(&refs_idmap, &refs, repo);
4725 	if (error)
4726 		goto done;
4727 
4728 	if (start_commit == NULL) {
4729 		struct got_reference *head_ref;
4730 		struct got_commit_object *commit = NULL;
4731 		error = got_ref_open(&head_ref, repo,
4732 		    worktree ? got_worktree_get_head_ref_name(worktree)
4733 		    : GOT_REF_HEAD, 0);
4734 		if (error != NULL)
4735 			goto done;
4736 		error = got_ref_resolve(&start_id, repo, head_ref);
4737 		got_ref_close(head_ref);
4738 		if (error != NULL)
4739 			goto done;
4740 		error = got_object_open_as_commit(&commit, repo,
4741 		    start_id);
4742 		if (error != NULL)
4743 			goto done;
4744 		got_object_commit_close(commit);
4745 	} else {
4746 		error = got_repo_match_object_id(&start_id, NULL,
4747 		    start_commit, GOT_OBJ_TYPE_COMMIT, &refs, repo);
4748 		if (error != NULL)
4749 			goto done;
4750 	}
4751 	if (end_commit != NULL) {
4752 		error = got_repo_match_object_id(&end_id, NULL,
4753 		    end_commit, GOT_OBJ_TYPE_COMMIT, &refs, repo);
4754 		if (error != NULL)
4755 			goto done;
4756 	}
4757 
4758 	if (worktree) {
4759 		/*
4760 		 * If a path was specified on the command line it was resolved
4761 		 * to a path in the work tree above. Prepend the work tree's
4762 		 * path prefix to obtain the corresponding in-repository path.
4763 		 */
4764 		if (path) {
4765 			const char *prefix;
4766 			prefix = got_worktree_get_path_prefix(worktree);
4767 			if (asprintf(&in_repo_path, "%s%s%s", prefix,
4768 			    (path[0] != '\0') ? "/" : "", path) == -1) {
4769 				error = got_error_from_errno("asprintf");
4770 				goto done;
4771 			}
4772 		}
4773 	} else
4774 		error = got_repo_map_path(&in_repo_path, repo,
4775 		    path ? path : "");
4776 	if (error != NULL)
4777 		goto done;
4778 	if (in_repo_path) {
4779 		free(path);
4780 		path = in_repo_path;
4781 	}
4782 
4783 	if (worktree) {
4784 		/* Release work tree lock. */
4785 		got_worktree_close(worktree);
4786 		worktree = NULL;
4787 	}
4788 
4789 	if (search_pattern && show_patch) {
4790 		tmpfile = got_opentemp();
4791 		if (tmpfile == NULL) {
4792 			error = got_error_from_errno("got_opentemp");
4793 			goto done;
4794 		}
4795 	}
4796 
4797 	error = print_commits(start_id, end_id, repo, path ? path : "",
4798 	    show_changed_paths, show_diffstat, show_patch, search_pattern,
4799 	    diff_context, limit, log_branches, reverse_display_order,
4800 	    refs_idmap, one_line, tmpfile);
4801 done:
4802 	free(path);
4803 	free(repo_path);
4804 	free(cwd);
4805 	if (worktree)
4806 		got_worktree_close(worktree);
4807 	if (repo) {
4808 		const struct got_error *close_err = got_repo_close(repo);
4809 		if (error == NULL)
4810 			error = close_err;
4811 	}
4812 	if (pack_fds) {
4813 		const struct got_error *pack_err =
4814 		    got_repo_pack_fds_close(pack_fds);
4815 		if (error == NULL)
4816 			error = pack_err;
4817 	}
4818 	if (refs_idmap)
4819 		got_reflist_object_id_map_free(refs_idmap);
4820 	if (tmpfile && fclose(tmpfile) == EOF && error == NULL)
4821 		error = got_error_from_errno("fclose");
4822 	got_ref_list_free(&refs);
4823 	return error;
4824 }
4825 
4826 __dead static void
4827 usage_diff(void)
4828 {
4829 	fprintf(stderr, "usage: %s diff [-adPsw] [-C number] [-c commit] "
4830 	    "[-r repository-path] [object1 object2 | path ...]\n",
4831 	    getprogname());
4832 	exit(1);
4833 }
4834 
4835 struct print_diff_arg {
4836 	struct got_repository *repo;
4837 	struct got_worktree *worktree;
4838 	struct got_diffstat_cb_arg *diffstat;
4839 	int diff_context;
4840 	const char *id_str;
4841 	int header_shown;
4842 	int diff_staged;
4843 	enum got_diff_algorithm diff_algo;
4844 	int ignore_whitespace;
4845 	int force_text_diff;
4846 	FILE *f1;
4847 	FILE *f2;
4848 	FILE *outfile;
4849 };
4850 
4851 /*
4852  * Create a file which contains the target path of a symlink so we can feed
4853  * it as content to the diff engine.
4854  */
4855 static const struct got_error *
4856 get_symlink_target_file(int *fd, int dirfd, const char *de_name,
4857     const char *abspath)
4858 {
4859 	const struct got_error *err = NULL;
4860 	char target_path[PATH_MAX];
4861 	ssize_t target_len, outlen;
4862 
4863 	*fd = -1;
4864 
4865 	if (dirfd != -1) {
4866 		target_len = readlinkat(dirfd, de_name, target_path, PATH_MAX);
4867 		if (target_len == -1)
4868 			return got_error_from_errno2("readlinkat", abspath);
4869 	} else {
4870 		target_len = readlink(abspath, target_path, PATH_MAX);
4871 		if (target_len == -1)
4872 			return got_error_from_errno2("readlink", abspath);
4873 	}
4874 
4875 	*fd = got_opentempfd();
4876 	if (*fd == -1)
4877 		return got_error_from_errno("got_opentempfd");
4878 
4879 	outlen = write(*fd, target_path, target_len);
4880 	if (outlen == -1) {
4881 		err = got_error_from_errno("got_opentempfd");
4882 		goto done;
4883 	}
4884 
4885 	if (lseek(*fd, 0, SEEK_SET) == -1) {
4886 		err = got_error_from_errno2("lseek", abspath);
4887 		goto done;
4888 	}
4889 done:
4890 	if (err) {
4891 		close(*fd);
4892 		*fd = -1;
4893 	}
4894 	return err;
4895 }
4896 
4897 static const struct got_error *
4898 print_diff(void *arg, unsigned char status, unsigned char staged_status,
4899     const char *path, struct got_object_id *blob_id,
4900     struct got_object_id *staged_blob_id, struct got_object_id *commit_id,
4901     int dirfd, const char *de_name)
4902 {
4903 	struct print_diff_arg *a = arg;
4904 	const struct got_error *err = NULL;
4905 	struct got_blob_object *blob1 = NULL;
4906 	int fd = -1, fd1 = -1, fd2 = -1;
4907 	FILE *f2 = NULL;
4908 	char *abspath = NULL, *label1 = NULL;
4909 	struct stat sb;
4910 	off_t size1 = 0;
4911 	int f2_exists = 0;
4912 
4913 	memset(&sb, 0, sizeof(sb));
4914 
4915 	if (a->diff_staged) {
4916 		if (staged_status != GOT_STATUS_MODIFY &&
4917 		    staged_status != GOT_STATUS_ADD &&
4918 		    staged_status != GOT_STATUS_DELETE)
4919 			return NULL;
4920 	} else {
4921 		if (staged_status == GOT_STATUS_DELETE)
4922 			return NULL;
4923 		if (status == GOT_STATUS_NONEXISTENT)
4924 			return got_error_set_errno(ENOENT, path);
4925 		if (status != GOT_STATUS_MODIFY &&
4926 		    status != GOT_STATUS_ADD &&
4927 		    status != GOT_STATUS_DELETE &&
4928 		    status != GOT_STATUS_CONFLICT)
4929 			return NULL;
4930 	}
4931 
4932 	err = got_opentemp_truncate(a->f1);
4933 	if (err)
4934 		return got_error_from_errno("got_opentemp_truncate");
4935 	err = got_opentemp_truncate(a->f2);
4936 	if (err)
4937 		return got_error_from_errno("got_opentemp_truncate");
4938 
4939 	if (!a->header_shown) {
4940 		if (fprintf(a->outfile, "diff %s%s\n",
4941 		    a->diff_staged ? "-s " : "",
4942 		    got_worktree_get_root_path(a->worktree)) < 0) {
4943 			err = got_error_from_errno("fprintf");
4944 			goto done;
4945 		}
4946 		if (fprintf(a->outfile, "commit - %s\n", a->id_str) < 0) {
4947 			err = got_error_from_errno("fprintf");
4948 			goto done;
4949 		}
4950 		if (fprintf(a->outfile, "path + %s%s\n",
4951 		    got_worktree_get_root_path(a->worktree),
4952 		    a->diff_staged ? " (staged changes)" : "") < 0) {
4953 			err = got_error_from_errno("fprintf");
4954 			goto done;
4955 		}
4956 		a->header_shown = 1;
4957 	}
4958 
4959 	if (a->diff_staged) {
4960 		const char *label1 = NULL, *label2 = NULL;
4961 		switch (staged_status) {
4962 		case GOT_STATUS_MODIFY:
4963 			label1 = path;
4964 			label2 = path;
4965 			break;
4966 		case GOT_STATUS_ADD:
4967 			label2 = path;
4968 			break;
4969 		case GOT_STATUS_DELETE:
4970 			label1 = path;
4971 			break;
4972 		default:
4973 			return got_error(GOT_ERR_FILE_STATUS);
4974 		}
4975 		fd1 = got_opentempfd();
4976 		if (fd1 == -1) {
4977 			err = got_error_from_errno("got_opentempfd");
4978 			goto done;
4979 		}
4980 		fd2 = got_opentempfd();
4981 		if (fd2 == -1) {
4982 			err = got_error_from_errno("got_opentempfd");
4983 			goto done;
4984 		}
4985 		err = got_diff_objects_as_blobs(NULL, NULL, a->f1, a->f2,
4986 		    fd1, fd2, blob_id, staged_blob_id, label1, label2,
4987 		    a->diff_algo, a->diff_context, a->ignore_whitespace,
4988 		    a->force_text_diff, a->diffstat, a->repo, a->outfile);
4989 		goto done;
4990 	}
4991 
4992 	fd1 = got_opentempfd();
4993 	if (fd1 == -1) {
4994 		err = got_error_from_errno("got_opentempfd");
4995 		goto done;
4996 	}
4997 
4998 	if (staged_status == GOT_STATUS_ADD ||
4999 	    staged_status == GOT_STATUS_MODIFY) {
5000 		char *id_str;
5001 		err = got_object_open_as_blob(&blob1, a->repo, staged_blob_id,
5002 		    8192, fd1);
5003 		if (err)
5004 			goto done;
5005 		err = got_object_id_str(&id_str, staged_blob_id);
5006 		if (err)
5007 			goto done;
5008 		if (asprintf(&label1, "%s (staged)", id_str) == -1) {
5009 			err = got_error_from_errno("asprintf");
5010 			free(id_str);
5011 			goto done;
5012 		}
5013 		free(id_str);
5014 	} else if (status != GOT_STATUS_ADD) {
5015 		err = got_object_open_as_blob(&blob1, a->repo, blob_id, 8192,
5016 		    fd1);
5017 		if (err)
5018 			goto done;
5019 	}
5020 
5021 	if (status != GOT_STATUS_DELETE) {
5022 		if (asprintf(&abspath, "%s/%s",
5023 		    got_worktree_get_root_path(a->worktree), path) == -1) {
5024 			err = got_error_from_errno("asprintf");
5025 			goto done;
5026 		}
5027 
5028 		if (dirfd != -1) {
5029 			fd = openat(dirfd, de_name,
5030 			    O_RDONLY | O_NOFOLLOW | O_CLOEXEC);
5031 			if (fd == -1) {
5032 				if (!got_err_open_nofollow_on_symlink()) {
5033 					err = got_error_from_errno2("openat",
5034 					    abspath);
5035 					goto done;
5036 				}
5037 				err = get_symlink_target_file(&fd, dirfd,
5038 				    de_name, abspath);
5039 				if (err)
5040 					goto done;
5041 			}
5042 		} else {
5043 			fd = open(abspath, O_RDONLY | O_NOFOLLOW | O_CLOEXEC);
5044 			if (fd == -1) {
5045 				if (!got_err_open_nofollow_on_symlink()) {
5046 					err = got_error_from_errno2("open",
5047 					    abspath);
5048 					goto done;
5049 				}
5050 				err = get_symlink_target_file(&fd, dirfd,
5051 				    de_name, abspath);
5052 				if (err)
5053 					goto done;
5054 			}
5055 		}
5056 		if (fstatat(fd, abspath, &sb, AT_SYMLINK_NOFOLLOW) == -1) {
5057 			err = got_error_from_errno2("fstatat", abspath);
5058 			goto done;
5059 		}
5060 		f2 = fdopen(fd, "r");
5061 		if (f2 == NULL) {
5062 			err = got_error_from_errno2("fdopen", abspath);
5063 			goto done;
5064 		}
5065 		fd = -1;
5066 		f2_exists = 1;
5067 	}
5068 
5069 	if (blob1) {
5070 		err = got_object_blob_dump_to_file(&size1, NULL, NULL,
5071 		    a->f1, blob1);
5072 		if (err)
5073 			goto done;
5074 	}
5075 
5076 	err = got_diff_blob_file(blob1, a->f1, size1, label1, f2 ? f2 : a->f2,
5077 	    f2_exists, &sb, path, GOT_DIFF_ALGORITHM_PATIENCE, a->diff_context,
5078 	    a->ignore_whitespace, a->force_text_diff, a->diffstat, a->outfile);
5079 done:
5080 	if (fd1 != -1 && close(fd1) == -1 && err == NULL)
5081 		err = got_error_from_errno("close");
5082 	if (fd2 != -1 && close(fd2) == -1 && err == NULL)
5083 		err = got_error_from_errno("close");
5084 	if (blob1)
5085 		got_object_blob_close(blob1);
5086 	if (fd != -1 && close(fd) == -1 && err == NULL)
5087 		err = got_error_from_errno("close");
5088 	if (f2 && fclose(f2) == EOF && err == NULL)
5089 		err = got_error_from_errno("fclose");
5090 	free(abspath);
5091 	return err;
5092 }
5093 
5094 static const struct got_error *
5095 cmd_diff(int argc, char *argv[])
5096 {
5097 	const struct got_error *error;
5098 	struct got_repository *repo = NULL;
5099 	struct got_worktree *worktree = NULL;
5100 	char *cwd = NULL, *repo_path = NULL;
5101 	const char *commit_args[2] = { NULL, NULL };
5102 	int ncommit_args = 0;
5103 	struct got_object_id *ids[2] = { NULL, NULL };
5104 	char *labels[2] = { NULL, NULL };
5105 	int type1 = GOT_OBJ_TYPE_ANY, type2 = GOT_OBJ_TYPE_ANY;
5106 	int diff_context = 3, diff_staged = 0, ignore_whitespace = 0, ch, i;
5107 	int force_text_diff = 0, force_path = 0, rflag = 0, show_diffstat = 0;
5108 	const char *errstr;
5109 	struct got_reflist_head refs;
5110 	struct got_pathlist_head diffstat_paths, paths;
5111 	FILE *f1 = NULL, *f2 = NULL, *outfile = NULL;
5112 	int fd1 = -1, fd2 = -1;
5113 	int *pack_fds = NULL;
5114 	struct got_diffstat_cb_arg dsa;
5115 
5116 	memset(&dsa, 0, sizeof(dsa));
5117 
5118 	TAILQ_INIT(&refs);
5119 	TAILQ_INIT(&paths);
5120 	TAILQ_INIT(&diffstat_paths);
5121 
5122 #ifndef PROFILE
5123 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
5124 	    NULL) == -1)
5125 		err(1, "pledge");
5126 #endif
5127 
5128 	while ((ch = getopt(argc, argv, "aC:c:dPr:sw")) != -1) {
5129 		switch (ch) {
5130 		case 'a':
5131 			force_text_diff = 1;
5132 			break;
5133 		case 'C':
5134 			diff_context = strtonum(optarg, 0, GOT_DIFF_MAX_CONTEXT,
5135 			    &errstr);
5136 			if (errstr != NULL)
5137 				errx(1, "number of context lines is %s: %s",
5138 				    errstr, optarg);
5139 			break;
5140 		case 'c':
5141 			if (ncommit_args >= 2)
5142 				errx(1, "too many -c options used");
5143 			commit_args[ncommit_args++] = optarg;
5144 			break;
5145 		case 'd':
5146 			show_diffstat = 1;
5147 			break;
5148 		case 'P':
5149 			force_path = 1;
5150 			break;
5151 		case 'r':
5152 			repo_path = realpath(optarg, NULL);
5153 			if (repo_path == NULL)
5154 				return got_error_from_errno2("realpath",
5155 				    optarg);
5156 			got_path_strip_trailing_slashes(repo_path);
5157 			rflag = 1;
5158 			break;
5159 		case 's':
5160 			diff_staged = 1;
5161 			break;
5162 		case 'w':
5163 			ignore_whitespace = 1;
5164 			break;
5165 		default:
5166 			usage_diff();
5167 			/* NOTREACHED */
5168 		}
5169 	}
5170 
5171 	argc -= optind;
5172 	argv += optind;
5173 
5174 	cwd = getcwd(NULL, 0);
5175 	if (cwd == NULL) {
5176 		error = got_error_from_errno("getcwd");
5177 		goto done;
5178 	}
5179 
5180 	error = got_repo_pack_fds_open(&pack_fds);
5181 	if (error != NULL)
5182 		goto done;
5183 
5184 	if (repo_path == NULL) {
5185 		error = got_worktree_open(&worktree, cwd);
5186 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
5187 			goto done;
5188 		else
5189 			error = NULL;
5190 		if (worktree) {
5191 			repo_path =
5192 			    strdup(got_worktree_get_repo_path(worktree));
5193 			if (repo_path == NULL) {
5194 				error = got_error_from_errno("strdup");
5195 				goto done;
5196 			}
5197 		} else {
5198 			repo_path = strdup(cwd);
5199 			if (repo_path == NULL) {
5200 				error = got_error_from_errno("strdup");
5201 				goto done;
5202 			}
5203 		}
5204 	}
5205 
5206 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
5207 	free(repo_path);
5208 	if (error != NULL)
5209 		goto done;
5210 
5211 	if (show_diffstat) {
5212 		dsa.paths = &diffstat_paths;
5213 		dsa.force_text = force_text_diff;
5214 		dsa.ignore_ws = ignore_whitespace;
5215 		dsa.diff_algo = GOT_DIFF_ALGORITHM_PATIENCE;
5216 	}
5217 
5218 	if (rflag || worktree == NULL || ncommit_args > 0) {
5219 		if (force_path) {
5220 			error = got_error_msg(GOT_ERR_NOT_IMPL,
5221 			    "-P option can only be used when diffing "
5222 			    "a work tree");
5223 			goto done;
5224 		}
5225 		if (diff_staged) {
5226 			error = got_error_msg(GOT_ERR_NOT_IMPL,
5227 			    "-s option can only be used when diffing "
5228 			    "a work tree");
5229 			goto done;
5230 		}
5231 	}
5232 
5233 	error = apply_unveil(got_repo_get_path(repo), 1,
5234 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
5235 	if (error)
5236 		goto done;
5237 
5238 	if ((!force_path && argc == 2) || ncommit_args > 0) {
5239 		int obj_type = (ncommit_args > 0 ?
5240 		    GOT_OBJ_TYPE_COMMIT : GOT_OBJ_TYPE_ANY);
5241 		error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name,
5242 		    NULL);
5243 		if (error)
5244 			goto done;
5245 		for (i = 0; i < (ncommit_args > 0 ? ncommit_args : argc); i++) {
5246 			const char *arg;
5247 			if (ncommit_args > 0)
5248 				arg = commit_args[i];
5249 			else
5250 				arg = argv[i];
5251 			error = got_repo_match_object_id(&ids[i], &labels[i],
5252 			    arg, obj_type, &refs, repo);
5253 			if (error) {
5254 				if (error->code != GOT_ERR_NOT_REF &&
5255 				    error->code != GOT_ERR_NO_OBJ)
5256 					goto done;
5257 				if (ncommit_args > 0)
5258 					goto done;
5259 				error = NULL;
5260 				break;
5261 			}
5262 		}
5263 	}
5264 
5265 	f1 = got_opentemp();
5266 	if (f1 == NULL) {
5267 		error = got_error_from_errno("got_opentemp");
5268 		goto done;
5269 	}
5270 
5271 	f2 = got_opentemp();
5272 	if (f2 == NULL) {
5273 		error = got_error_from_errno("got_opentemp");
5274 		goto done;
5275 	}
5276 
5277 	outfile = got_opentemp();
5278 	if (outfile == NULL) {
5279 		error = got_error_from_errno("got_opentemp");
5280 		goto done;
5281 	}
5282 
5283 	if (ncommit_args == 0 && (ids[0] == NULL || ids[1] == NULL)) {
5284 		struct print_diff_arg arg;
5285 		char *id_str;
5286 
5287 		if (worktree == NULL) {
5288 			if (argc == 2 && ids[0] == NULL) {
5289 				error = got_error_path(argv[0], GOT_ERR_NO_OBJ);
5290 				goto done;
5291 			} else if (argc == 2 && ids[1] == NULL) {
5292 				error = got_error_path(argv[1], GOT_ERR_NO_OBJ);
5293 				goto done;
5294 			} else if (argc > 0) {
5295 				error = got_error_fmt(GOT_ERR_NOT_WORKTREE,
5296 				    "%s", "specified paths cannot be resolved");
5297 				goto done;
5298 			} else {
5299 				error = got_error(GOT_ERR_NOT_WORKTREE);
5300 				goto done;
5301 			}
5302 		}
5303 
5304 		error = get_worktree_paths_from_argv(&paths, argc, argv,
5305 		    worktree);
5306 		if (error)
5307 			goto done;
5308 
5309 		error = got_object_id_str(&id_str,
5310 		    got_worktree_get_base_commit_id(worktree));
5311 		if (error)
5312 			goto done;
5313 		arg.repo = repo;
5314 		arg.worktree = worktree;
5315 		arg.diff_algo = GOT_DIFF_ALGORITHM_PATIENCE;
5316 		arg.diff_context = diff_context;
5317 		arg.id_str = id_str;
5318 		arg.header_shown = 0;
5319 		arg.diff_staged = diff_staged;
5320 		arg.ignore_whitespace = ignore_whitespace;
5321 		arg.force_text_diff = force_text_diff;
5322 		arg.diffstat = show_diffstat ? &dsa : NULL;
5323 		arg.f1 = f1;
5324 		arg.f2 = f2;
5325 		arg.outfile = outfile;
5326 
5327 		error = got_worktree_status(worktree, &paths, repo, 0,
5328 		    print_diff, &arg, check_cancelled, NULL);
5329 		free(id_str);
5330 		if (error)
5331 			goto done;
5332 
5333 		if (show_diffstat && dsa.nfiles > 0) {
5334 			char *header;
5335 
5336 			if (asprintf(&header, "diffstat %s%s",
5337 			    diff_staged ? "-s " : "",
5338 			    got_worktree_get_root_path(worktree)) == -1) {
5339 				error = got_error_from_errno("asprintf");
5340 				goto done;
5341 			}
5342 
5343 			error = print_diffstat(&dsa, header);
5344 			free(header);
5345 			if (error)
5346 				goto done;
5347 		}
5348 
5349 		error = printfile(outfile);
5350 		goto done;
5351 	}
5352 
5353 	if (ncommit_args == 1) {
5354 		struct got_commit_object *commit;
5355 		error = got_object_open_as_commit(&commit, repo, ids[0]);
5356 		if (error)
5357 			goto done;
5358 
5359 		labels[1] = labels[0];
5360 		ids[1] = ids[0];
5361 		if (got_object_commit_get_nparents(commit) > 0) {
5362 			const struct got_object_id_queue *pids;
5363 			struct got_object_qid *pid;
5364 			pids = got_object_commit_get_parent_ids(commit);
5365 			pid = STAILQ_FIRST(pids);
5366 			ids[0] = got_object_id_dup(&pid->id);
5367 			if (ids[0] == NULL) {
5368 				error = got_error_from_errno(
5369 				    "got_object_id_dup");
5370 				got_object_commit_close(commit);
5371 				goto done;
5372 			}
5373 			error = got_object_id_str(&labels[0], ids[0]);
5374 			if (error) {
5375 				got_object_commit_close(commit);
5376 				goto done;
5377 			}
5378 		} else {
5379 			ids[0] = NULL;
5380 			labels[0] = strdup("/dev/null");
5381 			if (labels[0] == NULL) {
5382 				error = got_error_from_errno("strdup");
5383 				got_object_commit_close(commit);
5384 				goto done;
5385 			}
5386 		}
5387 
5388 		got_object_commit_close(commit);
5389 	}
5390 
5391 	if (ncommit_args == 0 && argc > 2) {
5392 		error = got_error_msg(GOT_ERR_BAD_PATH,
5393 		    "path arguments cannot be used when diffing two objects");
5394 		goto done;
5395 	}
5396 
5397 	if (ids[0]) {
5398 		error = got_object_get_type(&type1, repo, ids[0]);
5399 		if (error)
5400 			goto done;
5401 	}
5402 
5403 	error = got_object_get_type(&type2, repo, ids[1]);
5404 	if (error)
5405 		goto done;
5406 	if (type1 != GOT_OBJ_TYPE_ANY && type1 != type2) {
5407 		error = got_error(GOT_ERR_OBJ_TYPE);
5408 		goto done;
5409 	}
5410 	if (type1 == GOT_OBJ_TYPE_BLOB && argc > 2) {
5411 		error = got_error_msg(GOT_ERR_OBJ_TYPE,
5412 		    "path arguments cannot be used when diffing blobs");
5413 		goto done;
5414 	}
5415 
5416 	for (i = 0; ncommit_args > 0 && i < argc; i++) {
5417 		char *in_repo_path;
5418 		struct got_pathlist_entry *new;
5419 		if (worktree) {
5420 			const char *prefix;
5421 			char *p;
5422 			error = got_worktree_resolve_path(&p, worktree,
5423 			    argv[i]);
5424 			if (error)
5425 				goto done;
5426 			prefix = got_worktree_get_path_prefix(worktree);
5427 			while (prefix[0] == '/')
5428 				prefix++;
5429 			if (asprintf(&in_repo_path, "%s%s%s", prefix,
5430 			    (p[0] != '\0' && prefix[0] != '\0') ? "/" : "",
5431 			    p) == -1) {
5432 				error = got_error_from_errno("asprintf");
5433 				free(p);
5434 				goto done;
5435 			}
5436 			free(p);
5437 		} else {
5438 			char *mapped_path, *s;
5439 			error = got_repo_map_path(&mapped_path, repo, argv[i]);
5440 			if (error)
5441 				goto done;
5442 			s = mapped_path;
5443 			while (s[0] == '/')
5444 				s++;
5445 			in_repo_path = strdup(s);
5446 			if (in_repo_path == NULL) {
5447 				error = got_error_from_errno("asprintf");
5448 				free(mapped_path);
5449 				goto done;
5450 			}
5451 			free(mapped_path);
5452 
5453 		}
5454 		error = got_pathlist_insert(&new, &paths, in_repo_path, NULL);
5455 		if (error || new == NULL /* duplicate */)
5456 			free(in_repo_path);
5457 		if (error)
5458 			goto done;
5459 	}
5460 
5461 	if (worktree) {
5462 		/* Release work tree lock. */
5463 		got_worktree_close(worktree);
5464 		worktree = NULL;
5465 	}
5466 
5467 	fd1 = got_opentempfd();
5468 	if (fd1 == -1) {
5469 		error = got_error_from_errno("got_opentempfd");
5470 		goto done;
5471 	}
5472 
5473 	fd2 = got_opentempfd();
5474 	if (fd2 == -1) {
5475 		error = got_error_from_errno("got_opentempfd");
5476 		goto done;
5477 	}
5478 
5479 	switch (type1 == GOT_OBJ_TYPE_ANY ? type2 : type1) {
5480 	case GOT_OBJ_TYPE_BLOB:
5481 		error = got_diff_objects_as_blobs(NULL, NULL, f1, f2,
5482 		    fd1, fd2, ids[0], ids[1], NULL, NULL,
5483 		    GOT_DIFF_ALGORITHM_PATIENCE, diff_context,
5484 		    ignore_whitespace, force_text_diff,
5485 		    show_diffstat ? &dsa : NULL, repo, outfile);
5486 		break;
5487 	case GOT_OBJ_TYPE_TREE:
5488 		error = got_diff_objects_as_trees(NULL, NULL, f1, f2, fd1, fd2,
5489 		    ids[0], ids[1], &paths, "", "",
5490 		    GOT_DIFF_ALGORITHM_PATIENCE, diff_context,
5491 		    ignore_whitespace, force_text_diff,
5492 		    show_diffstat ? &dsa : NULL, repo, outfile);
5493 		break;
5494 	case GOT_OBJ_TYPE_COMMIT:
5495 		fprintf(outfile, "diff %s %s\n", labels[0], labels[1]);
5496 		error = got_diff_objects_as_commits(NULL, NULL, f1, f2,
5497 		    fd1, fd2, ids[0], ids[1], &paths,
5498 		    GOT_DIFF_ALGORITHM_PATIENCE, diff_context,
5499 		    ignore_whitespace, force_text_diff,
5500 		    show_diffstat ? &dsa : NULL, repo, outfile);
5501 		break;
5502 	default:
5503 		error = got_error(GOT_ERR_OBJ_TYPE);
5504 	}
5505 	if (error)
5506 		goto done;
5507 
5508 	if (show_diffstat && dsa.nfiles > 0) {
5509 		char *header = NULL;
5510 
5511 		if (asprintf(&header, "diffstat %s %s",
5512 		    labels[0], labels[1]) == -1) {
5513 			error = got_error_from_errno("asprintf");
5514 			goto done;
5515 		}
5516 
5517 		error = print_diffstat(&dsa, header);
5518 		free(header);
5519 		if (error)
5520 			goto done;
5521 	}
5522 
5523 	error = printfile(outfile);
5524 
5525 done:
5526 	free(labels[0]);
5527 	free(labels[1]);
5528 	free(ids[0]);
5529 	free(ids[1]);
5530 	if (worktree)
5531 		got_worktree_close(worktree);
5532 	if (repo) {
5533 		const struct got_error *close_err = got_repo_close(repo);
5534 		if (error == NULL)
5535 			error = close_err;
5536 	}
5537 	if (pack_fds) {
5538 		const struct got_error *pack_err =
5539 		    got_repo_pack_fds_close(pack_fds);
5540 		if (error == NULL)
5541 			error = pack_err;
5542 	}
5543 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_PATH);
5544 	got_pathlist_free(&diffstat_paths, GOT_PATHLIST_FREE_ALL);
5545 	got_ref_list_free(&refs);
5546 	if (outfile && fclose(outfile) == EOF && error == NULL)
5547 		error = got_error_from_errno("fclose");
5548 	if (f1 && fclose(f1) == EOF && error == NULL)
5549 		error = got_error_from_errno("fclose");
5550 	if (f2 && fclose(f2) == EOF && error == NULL)
5551 		error = got_error_from_errno("fclose");
5552 	if (fd1 != -1 && close(fd1) == -1 && error == NULL)
5553 		error = got_error_from_errno("close");
5554 	if (fd2 != -1 && close(fd2) == -1 && error == NULL)
5555 		error = got_error_from_errno("close");
5556 	return error;
5557 }
5558 
5559 __dead static void
5560 usage_blame(void)
5561 {
5562 	fprintf(stderr,
5563 	    "usage: %s blame [-c commit] [-r repository-path] path\n",
5564 	    getprogname());
5565 	exit(1);
5566 }
5567 
5568 struct blame_line {
5569 	int annotated;
5570 	char *id_str;
5571 	char *committer;
5572 	char datebuf[11]; /* YYYY-MM-DD + NUL */
5573 };
5574 
5575 struct blame_cb_args {
5576 	struct blame_line *lines;
5577 	int nlines;
5578 	int nlines_prec;
5579 	int lineno_cur;
5580 	off_t *line_offsets;
5581 	FILE *f;
5582 	struct got_repository *repo;
5583 };
5584 
5585 static const struct got_error *
5586 blame_cb(void *arg, int nlines, int lineno,
5587     struct got_commit_object *commit, struct got_object_id *id)
5588 {
5589 	const struct got_error *err = NULL;
5590 	struct blame_cb_args *a = arg;
5591 	struct blame_line *bline;
5592 	char *line = NULL;
5593 	size_t linesize = 0;
5594 	off_t offset;
5595 	struct tm tm;
5596 	time_t committer_time;
5597 
5598 	if (nlines != a->nlines ||
5599 	    (lineno != -1 && lineno < 1) || lineno > a->nlines)
5600 		return got_error(GOT_ERR_RANGE);
5601 
5602 	if (sigint_received)
5603 		return got_error(GOT_ERR_ITER_COMPLETED);
5604 
5605 	if (lineno == -1)
5606 		return NULL; /* no change in this commit */
5607 
5608 	/* Annotate this line. */
5609 	bline = &a->lines[lineno - 1];
5610 	if (bline->annotated)
5611 		return NULL;
5612 	err = got_object_id_str(&bline->id_str, id);
5613 	if (err)
5614 		return err;
5615 
5616 	bline->committer = strdup(got_object_commit_get_committer(commit));
5617 	if (bline->committer == NULL) {
5618 		err = got_error_from_errno("strdup");
5619 		goto done;
5620 	}
5621 
5622 	committer_time = got_object_commit_get_committer_time(commit);
5623 	if (gmtime_r(&committer_time, &tm) == NULL)
5624 		return got_error_from_errno("gmtime_r");
5625 	if (strftime(bline->datebuf, sizeof(bline->datebuf), "%G-%m-%d",
5626 	    &tm) == 0) {
5627 		err = got_error(GOT_ERR_NO_SPACE);
5628 		goto done;
5629 	}
5630 	bline->annotated = 1;
5631 
5632 	/* Print lines annotated so far. */
5633 	bline = &a->lines[a->lineno_cur - 1];
5634 	if (!bline->annotated)
5635 		goto done;
5636 
5637 	offset = a->line_offsets[a->lineno_cur - 1];
5638 	if (fseeko(a->f, offset, SEEK_SET) == -1) {
5639 		err = got_error_from_errno("fseeko");
5640 		goto done;
5641 	}
5642 
5643 	while (a->lineno_cur <= a->nlines && bline->annotated) {
5644 		char *smallerthan, *at, *nl, *committer;
5645 		size_t len;
5646 
5647 		if (getline(&line, &linesize, a->f) == -1) {
5648 			if (ferror(a->f))
5649 				err = got_error_from_errno("getline");
5650 			break;
5651 		}
5652 
5653 		committer = bline->committer;
5654 		smallerthan = strchr(committer, '<');
5655 		if (smallerthan && smallerthan[1] != '\0')
5656 			committer = smallerthan + 1;
5657 		at = strchr(committer, '@');
5658 		if (at)
5659 			*at = '\0';
5660 		len = strlen(committer);
5661 		if (len >= 9)
5662 			committer[8] = '\0';
5663 
5664 		nl = strchr(line, '\n');
5665 		if (nl)
5666 			*nl = '\0';
5667 		printf("%.*d) %.8s %s %-8s %s\n", a->nlines_prec, a->lineno_cur,
5668 		    bline->id_str, bline->datebuf, committer, line);
5669 
5670 		a->lineno_cur++;
5671 		bline = &a->lines[a->lineno_cur - 1];
5672 	}
5673 done:
5674 	free(line);
5675 	return err;
5676 }
5677 
5678 static const struct got_error *
5679 cmd_blame(int argc, char *argv[])
5680 {
5681 	const struct got_error *error;
5682 	struct got_repository *repo = NULL;
5683 	struct got_worktree *worktree = NULL;
5684 	char *path, *cwd = NULL, *repo_path = NULL, *in_repo_path = NULL;
5685 	char *link_target = NULL;
5686 	struct got_object_id *obj_id = NULL;
5687 	struct got_object_id *commit_id = NULL;
5688 	struct got_commit_object *commit = NULL;
5689 	struct got_blob_object *blob = NULL;
5690 	char *commit_id_str = NULL;
5691 	struct blame_cb_args bca;
5692 	int ch, obj_type, i, fd1 = -1, fd2 = -1, fd3 = -1;
5693 	off_t filesize;
5694 	int *pack_fds = NULL;
5695 	FILE *f1 = NULL, *f2 = NULL;
5696 
5697 	fd1 = got_opentempfd();
5698 	if (fd1 == -1)
5699 		return got_error_from_errno("got_opentempfd");
5700 
5701 	memset(&bca, 0, sizeof(bca));
5702 
5703 #ifndef PROFILE
5704 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
5705 	    NULL) == -1)
5706 		err(1, "pledge");
5707 #endif
5708 
5709 	while ((ch = getopt(argc, argv, "c:r:")) != -1) {
5710 		switch (ch) {
5711 		case 'c':
5712 			commit_id_str = optarg;
5713 			break;
5714 		case 'r':
5715 			repo_path = realpath(optarg, NULL);
5716 			if (repo_path == NULL)
5717 				return got_error_from_errno2("realpath",
5718 				    optarg);
5719 			got_path_strip_trailing_slashes(repo_path);
5720 			break;
5721 		default:
5722 			usage_blame();
5723 			/* NOTREACHED */
5724 		}
5725 	}
5726 
5727 	argc -= optind;
5728 	argv += optind;
5729 
5730 	if (argc == 1)
5731 		path = argv[0];
5732 	else
5733 		usage_blame();
5734 
5735 	cwd = getcwd(NULL, 0);
5736 	if (cwd == NULL) {
5737 		error = got_error_from_errno("getcwd");
5738 		goto done;
5739 	}
5740 
5741 	error = got_repo_pack_fds_open(&pack_fds);
5742 	if (error != NULL)
5743 		goto done;
5744 
5745 	if (repo_path == NULL) {
5746 		error = got_worktree_open(&worktree, cwd);
5747 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
5748 			goto done;
5749 		else
5750 			error = NULL;
5751 		if (worktree) {
5752 			repo_path =
5753 			    strdup(got_worktree_get_repo_path(worktree));
5754 			if (repo_path == NULL) {
5755 				error = got_error_from_errno("strdup");
5756 				if (error)
5757 					goto done;
5758 			}
5759 		} else {
5760 			repo_path = strdup(cwd);
5761 			if (repo_path == NULL) {
5762 				error = got_error_from_errno("strdup");
5763 				goto done;
5764 			}
5765 		}
5766 	}
5767 
5768 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
5769 	if (error != NULL)
5770 		goto done;
5771 
5772 	if (worktree) {
5773 		const char *prefix = got_worktree_get_path_prefix(worktree);
5774 		char *p;
5775 
5776 		error = got_worktree_resolve_path(&p, worktree, path);
5777 		if (error)
5778 			goto done;
5779 		if (asprintf(&in_repo_path, "%s%s%s", prefix,
5780 		    (p[0] != '\0' && !got_path_is_root_dir(prefix)) ? "/" : "",
5781 		    p) == -1) {
5782 			error = got_error_from_errno("asprintf");
5783 			free(p);
5784 			goto done;
5785 		}
5786 		free(p);
5787 		error = apply_unveil(got_repo_get_path(repo), 1, NULL);
5788 	} else {
5789 		error = apply_unveil(got_repo_get_path(repo), 1, NULL);
5790 		if (error)
5791 			goto done;
5792 		error = got_repo_map_path(&in_repo_path, repo, path);
5793 	}
5794 	if (error)
5795 		goto done;
5796 
5797 	if (commit_id_str == NULL) {
5798 		struct got_reference *head_ref;
5799 		error = got_ref_open(&head_ref, repo, worktree ?
5800 		    got_worktree_get_head_ref_name(worktree) : GOT_REF_HEAD, 0);
5801 		if (error != NULL)
5802 			goto done;
5803 		error = got_ref_resolve(&commit_id, repo, head_ref);
5804 		got_ref_close(head_ref);
5805 		if (error != NULL)
5806 			goto done;
5807 	} else {
5808 		struct got_reflist_head refs;
5809 		TAILQ_INIT(&refs);
5810 		error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name,
5811 		    NULL);
5812 		if (error)
5813 			goto done;
5814 		error = got_repo_match_object_id(&commit_id, NULL,
5815 		    commit_id_str, GOT_OBJ_TYPE_COMMIT, &refs, repo);
5816 		got_ref_list_free(&refs);
5817 		if (error)
5818 			goto done;
5819 	}
5820 
5821 	if (worktree) {
5822 		/* Release work tree lock. */
5823 		got_worktree_close(worktree);
5824 		worktree = NULL;
5825 	}
5826 
5827 	error = got_object_open_as_commit(&commit, repo, commit_id);
5828 	if (error)
5829 		goto done;
5830 
5831 	error = got_object_resolve_symlinks(&link_target, in_repo_path,
5832 	    commit, repo);
5833 	if (error)
5834 		goto done;
5835 
5836 	error = got_object_id_by_path(&obj_id, repo, commit,
5837 	    link_target ? link_target : in_repo_path);
5838 	if (error)
5839 		goto done;
5840 
5841 	error = got_object_get_type(&obj_type, repo, obj_id);
5842 	if (error)
5843 		goto done;
5844 
5845 	if (obj_type != GOT_OBJ_TYPE_BLOB) {
5846 		error = got_error_path(link_target ? link_target : in_repo_path,
5847 		    GOT_ERR_OBJ_TYPE);
5848 		goto done;
5849 	}
5850 
5851 	error = got_object_open_as_blob(&blob, repo, obj_id, 8192, fd1);
5852 	if (error)
5853 		goto done;
5854 	bca.f = got_opentemp();
5855 	if (bca.f == NULL) {
5856 		error = got_error_from_errno("got_opentemp");
5857 		goto done;
5858 	}
5859 	error = got_object_blob_dump_to_file(&filesize, &bca.nlines,
5860 	    &bca.line_offsets, bca.f, blob);
5861 	if (error || bca.nlines == 0)
5862 		goto done;
5863 
5864 	/* Don't include \n at EOF in the blame line count. */
5865 	if (bca.line_offsets[bca.nlines - 1] == filesize)
5866 		bca.nlines--;
5867 
5868 	bca.lines = calloc(bca.nlines, sizeof(*bca.lines));
5869 	if (bca.lines == NULL) {
5870 		error = got_error_from_errno("calloc");
5871 		goto done;
5872 	}
5873 	bca.lineno_cur = 1;
5874 	bca.nlines_prec = 0;
5875 	i = bca.nlines;
5876 	while (i > 0) {
5877 		i /= 10;
5878 		bca.nlines_prec++;
5879 	}
5880 	bca.repo = repo;
5881 
5882 	fd2 = got_opentempfd();
5883 	if (fd2 == -1) {
5884 		error = got_error_from_errno("got_opentempfd");
5885 		goto done;
5886 	}
5887 	fd3 = got_opentempfd();
5888 	if (fd3 == -1) {
5889 		error = got_error_from_errno("got_opentempfd");
5890 		goto done;
5891 	}
5892 	f1 = got_opentemp();
5893 	if (f1 == NULL) {
5894 		error = got_error_from_errno("got_opentemp");
5895 		goto done;
5896 	}
5897 	f2 = got_opentemp();
5898 	if (f2 == NULL) {
5899 		error = got_error_from_errno("got_opentemp");
5900 		goto done;
5901 	}
5902 	error = got_blame(link_target ? link_target : in_repo_path, commit_id,
5903 	    repo, GOT_DIFF_ALGORITHM_PATIENCE, blame_cb, &bca,
5904 	    check_cancelled, NULL, fd2, fd3, f1, f2);
5905 done:
5906 	free(in_repo_path);
5907 	free(link_target);
5908 	free(repo_path);
5909 	free(cwd);
5910 	free(commit_id);
5911 	free(obj_id);
5912 	if (commit)
5913 		got_object_commit_close(commit);
5914 
5915 	if (fd1 != -1 && close(fd1) == -1 && error == NULL)
5916 		error = got_error_from_errno("close");
5917 	if (fd2 != -1 && close(fd2) == -1 && error == NULL)
5918 		error = got_error_from_errno("close");
5919 	if (fd3 != -1 && close(fd3) == -1 && error == NULL)
5920 		error = got_error_from_errno("close");
5921 	if (f1 && fclose(f1) == EOF && error == NULL)
5922 		error = got_error_from_errno("fclose");
5923 	if (f2 && fclose(f2) == EOF && error == NULL)
5924 		error = got_error_from_errno("fclose");
5925 
5926 	if (blob)
5927 		got_object_blob_close(blob);
5928 	if (worktree)
5929 		got_worktree_close(worktree);
5930 	if (repo) {
5931 		const struct got_error *close_err = got_repo_close(repo);
5932 		if (error == NULL)
5933 			error = close_err;
5934 	}
5935 	if (pack_fds) {
5936 		const struct got_error *pack_err =
5937 		    got_repo_pack_fds_close(pack_fds);
5938 		if (error == NULL)
5939 			error = pack_err;
5940 	}
5941 	if (bca.lines) {
5942 		for (i = 0; i < bca.nlines; i++) {
5943 			struct blame_line *bline = &bca.lines[i];
5944 			free(bline->id_str);
5945 			free(bline->committer);
5946 		}
5947 		free(bca.lines);
5948 	}
5949 	free(bca.line_offsets);
5950 	if (bca.f && fclose(bca.f) == EOF && error == NULL)
5951 		error = got_error_from_errno("fclose");
5952 	return error;
5953 }
5954 
5955 __dead static void
5956 usage_tree(void)
5957 {
5958 	fprintf(stderr, "usage: %s tree [-iR] [-c commit] [-r repository-path] "
5959 	    "[path]\n", getprogname());
5960 	exit(1);
5961 }
5962 
5963 static const struct got_error *
5964 print_entry(struct got_tree_entry *te, const char *id, const char *path,
5965     const char *root_path, struct got_repository *repo)
5966 {
5967 	const struct got_error *err = NULL;
5968 	int is_root_path = (strcmp(path, root_path) == 0);
5969 	const char *modestr = "";
5970 	mode_t mode = got_tree_entry_get_mode(te);
5971 	char *link_target = NULL;
5972 
5973 	path += strlen(root_path);
5974 	while (path[0] == '/')
5975 		path++;
5976 
5977 	if (got_object_tree_entry_is_submodule(te))
5978 		modestr = "$";
5979 	else if (S_ISLNK(mode)) {
5980 		int i;
5981 
5982 		err = got_tree_entry_get_symlink_target(&link_target, te, repo);
5983 		if (err)
5984 			return err;
5985 		for (i = 0; i < strlen(link_target); i++) {
5986 			if (!isprint((unsigned char)link_target[i]))
5987 				link_target[i] = '?';
5988 		}
5989 
5990 		modestr = "@";
5991 	}
5992 	else if (S_ISDIR(mode))
5993 		modestr = "/";
5994 	else if (mode & S_IXUSR)
5995 		modestr = "*";
5996 
5997 	printf("%s%s%s%s%s%s%s\n", id ? id : "", path,
5998 	    is_root_path ? "" : "/", got_tree_entry_get_name(te), modestr,
5999 	    link_target ? " -> ": "", link_target ? link_target : "");
6000 
6001 	free(link_target);
6002 	return NULL;
6003 }
6004 
6005 static const struct got_error *
6006 print_tree(const char *path, struct got_commit_object *commit,
6007     int show_ids, int recurse, const char *root_path,
6008     struct got_repository *repo)
6009 {
6010 	const struct got_error *err = NULL;
6011 	struct got_object_id *tree_id = NULL;
6012 	struct got_tree_object *tree = NULL;
6013 	int nentries, i;
6014 
6015 	err = got_object_id_by_path(&tree_id, repo, commit, path);
6016 	if (err)
6017 		goto done;
6018 
6019 	err = got_object_open_as_tree(&tree, repo, tree_id);
6020 	if (err)
6021 		goto done;
6022 	nentries = got_object_tree_get_nentries(tree);
6023 	for (i = 0; i < nentries; i++) {
6024 		struct got_tree_entry *te;
6025 		char *id = NULL;
6026 
6027 		if (sigint_received || sigpipe_received)
6028 			break;
6029 
6030 		te = got_object_tree_get_entry(tree, i);
6031 		if (show_ids) {
6032 			char *id_str;
6033 			err = got_object_id_str(&id_str,
6034 			    got_tree_entry_get_id(te));
6035 			if (err)
6036 				goto done;
6037 			if (asprintf(&id, "%s ", id_str) == -1) {
6038 				err = got_error_from_errno("asprintf");
6039 				free(id_str);
6040 				goto done;
6041 			}
6042 			free(id_str);
6043 		}
6044 		err = print_entry(te, id, path, root_path, repo);
6045 		free(id);
6046 		if (err)
6047 			goto done;
6048 
6049 		if (recurse && S_ISDIR(got_tree_entry_get_mode(te))) {
6050 			char *child_path;
6051 			if (asprintf(&child_path, "%s%s%s", path,
6052 			    path[0] == '/' && path[1] == '\0' ? "" : "/",
6053 			    got_tree_entry_get_name(te)) == -1) {
6054 				err = got_error_from_errno("asprintf");
6055 				goto done;
6056 			}
6057 			err = print_tree(child_path, commit, show_ids, 1,
6058 			    root_path, repo);
6059 			free(child_path);
6060 			if (err)
6061 				goto done;
6062 		}
6063 	}
6064 done:
6065 	if (tree)
6066 		got_object_tree_close(tree);
6067 	free(tree_id);
6068 	return err;
6069 }
6070 
6071 static const struct got_error *
6072 cmd_tree(int argc, char *argv[])
6073 {
6074 	const struct got_error *error;
6075 	struct got_repository *repo = NULL;
6076 	struct got_worktree *worktree = NULL;
6077 	const char *path, *refname = NULL;
6078 	char *cwd = NULL, *repo_path = NULL, *in_repo_path = NULL;
6079 	struct got_object_id *commit_id = NULL;
6080 	struct got_commit_object *commit = NULL;
6081 	char *commit_id_str = NULL;
6082 	int show_ids = 0, recurse = 0;
6083 	int ch;
6084 	int *pack_fds = NULL;
6085 
6086 #ifndef PROFILE
6087 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
6088 	    NULL) == -1)
6089 		err(1, "pledge");
6090 #endif
6091 
6092 	while ((ch = getopt(argc, argv, "c:iRr:")) != -1) {
6093 		switch (ch) {
6094 		case 'c':
6095 			commit_id_str = optarg;
6096 			break;
6097 		case 'i':
6098 			show_ids = 1;
6099 			break;
6100 		case 'R':
6101 			recurse = 1;
6102 			break;
6103 		case 'r':
6104 			repo_path = realpath(optarg, NULL);
6105 			if (repo_path == NULL)
6106 				return got_error_from_errno2("realpath",
6107 				    optarg);
6108 			got_path_strip_trailing_slashes(repo_path);
6109 			break;
6110 		default:
6111 			usage_tree();
6112 			/* NOTREACHED */
6113 		}
6114 	}
6115 
6116 	argc -= optind;
6117 	argv += optind;
6118 
6119 	if (argc == 1)
6120 		path = argv[0];
6121 	else if (argc > 1)
6122 		usage_tree();
6123 	else
6124 		path = NULL;
6125 
6126 	cwd = getcwd(NULL, 0);
6127 	if (cwd == NULL) {
6128 		error = got_error_from_errno("getcwd");
6129 		goto done;
6130 	}
6131 
6132 	error = got_repo_pack_fds_open(&pack_fds);
6133 	if (error != NULL)
6134 		goto done;
6135 
6136 	if (repo_path == NULL) {
6137 		error = got_worktree_open(&worktree, cwd);
6138 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
6139 			goto done;
6140 		else
6141 			error = NULL;
6142 		if (worktree) {
6143 			repo_path =
6144 			    strdup(got_worktree_get_repo_path(worktree));
6145 			if (repo_path == NULL)
6146 				error = got_error_from_errno("strdup");
6147 			if (error)
6148 				goto done;
6149 		} else {
6150 			repo_path = strdup(cwd);
6151 			if (repo_path == NULL) {
6152 				error = got_error_from_errno("strdup");
6153 				goto done;
6154 			}
6155 		}
6156 	}
6157 
6158 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
6159 	if (error != NULL)
6160 		goto done;
6161 
6162 	if (worktree) {
6163 		const char *prefix = got_worktree_get_path_prefix(worktree);
6164 		char *p;
6165 
6166 		if (path == NULL)
6167 			path = "";
6168 		error = got_worktree_resolve_path(&p, worktree, path);
6169 		if (error)
6170 			goto done;
6171 		if (asprintf(&in_repo_path, "%s%s%s", prefix,
6172 		    (p[0] != '\0' && !got_path_is_root_dir(prefix)) ?  "/" : "",
6173 		    p) == -1) {
6174 			error = got_error_from_errno("asprintf");
6175 			free(p);
6176 			goto done;
6177 		}
6178 		free(p);
6179 		error = apply_unveil(got_repo_get_path(repo), 1, NULL);
6180 		if (error)
6181 			goto done;
6182 	} else {
6183 		error = apply_unveil(got_repo_get_path(repo), 1, NULL);
6184 		if (error)
6185 			goto done;
6186 		if (path == NULL)
6187 			path = "/";
6188 		error = got_repo_map_path(&in_repo_path, repo, path);
6189 		if (error != NULL)
6190 			goto done;
6191 	}
6192 
6193 	if (commit_id_str == NULL) {
6194 		struct got_reference *head_ref;
6195 		if (worktree)
6196 			refname = got_worktree_get_head_ref_name(worktree);
6197 		else
6198 			refname = GOT_REF_HEAD;
6199 		error = got_ref_open(&head_ref, repo, refname, 0);
6200 		if (error != NULL)
6201 			goto done;
6202 		error = got_ref_resolve(&commit_id, repo, head_ref);
6203 		got_ref_close(head_ref);
6204 		if (error != NULL)
6205 			goto done;
6206 	} else {
6207 		struct got_reflist_head refs;
6208 		TAILQ_INIT(&refs);
6209 		error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name,
6210 		    NULL);
6211 		if (error)
6212 			goto done;
6213 		error = got_repo_match_object_id(&commit_id, NULL,
6214 		    commit_id_str, GOT_OBJ_TYPE_COMMIT, &refs, repo);
6215 		got_ref_list_free(&refs);
6216 		if (error)
6217 			goto done;
6218 	}
6219 
6220 	if (worktree) {
6221 		/* Release work tree lock. */
6222 		got_worktree_close(worktree);
6223 		worktree = NULL;
6224 	}
6225 
6226 	error = got_object_open_as_commit(&commit, repo, commit_id);
6227 	if (error)
6228 		goto done;
6229 
6230 	error = print_tree(in_repo_path, commit, show_ids, recurse,
6231 	    in_repo_path, repo);
6232 done:
6233 	free(in_repo_path);
6234 	free(repo_path);
6235 	free(cwd);
6236 	free(commit_id);
6237 	if (commit)
6238 		got_object_commit_close(commit);
6239 	if (worktree)
6240 		got_worktree_close(worktree);
6241 	if (repo) {
6242 		const struct got_error *close_err = got_repo_close(repo);
6243 		if (error == NULL)
6244 			error = close_err;
6245 	}
6246 	if (pack_fds) {
6247 		const struct got_error *pack_err =
6248 		    got_repo_pack_fds_close(pack_fds);
6249 		if (error == NULL)
6250 			error = pack_err;
6251 	}
6252 	return error;
6253 }
6254 
6255 __dead static void
6256 usage_status(void)
6257 {
6258 	fprintf(stderr, "usage: %s status [-I] [-S status-codes] "
6259 	    "[-s status-codes] [path ...]\n", getprogname());
6260 	exit(1);
6261 }
6262 
6263 struct got_status_arg {
6264 	char *status_codes;
6265 	int suppress;
6266 };
6267 
6268 static const struct got_error *
6269 print_status(void *arg, unsigned char status, unsigned char staged_status,
6270     const char *path, struct got_object_id *blob_id,
6271     struct got_object_id *staged_blob_id, struct got_object_id *commit_id,
6272     int dirfd, const char *de_name)
6273 {
6274 	struct got_status_arg *st = arg;
6275 
6276 	if (status == staged_status && (status == GOT_STATUS_DELETE))
6277 		status = GOT_STATUS_NO_CHANGE;
6278 	if (st != NULL && st->status_codes) {
6279 		size_t ncodes = strlen(st->status_codes);
6280 		int i, j = 0;
6281 
6282 		for (i = 0; i < ncodes ; i++) {
6283 			if (st->suppress) {
6284 				if (status == st->status_codes[i] ||
6285 				    staged_status == st->status_codes[i]) {
6286 					j++;
6287 					continue;
6288 				}
6289 			} else {
6290 				if (status == st->status_codes[i] ||
6291 				    staged_status == st->status_codes[i])
6292 					break;
6293 			}
6294 		}
6295 
6296 		if (st->suppress && j == 0)
6297 			goto print;
6298 
6299 		if (i == ncodes)
6300 			return NULL;
6301 	}
6302 print:
6303 	printf("%c%c %s\n", status, staged_status, path);
6304 	return NULL;
6305 }
6306 
6307 static const struct got_error *
6308 cmd_status(int argc, char *argv[])
6309 {
6310 	const struct got_error *error = NULL;
6311 	struct got_repository *repo = NULL;
6312 	struct got_worktree *worktree = NULL;
6313 	struct got_status_arg st;
6314 	char *cwd = NULL;
6315 	struct got_pathlist_head paths;
6316 	int ch, i, no_ignores = 0;
6317 	int *pack_fds = NULL;
6318 
6319 	TAILQ_INIT(&paths);
6320 
6321 	memset(&st, 0, sizeof(st));
6322 	st.status_codes = NULL;
6323 	st.suppress = 0;
6324 
6325 #ifndef PROFILE
6326 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
6327 	    NULL) == -1)
6328 		err(1, "pledge");
6329 #endif
6330 
6331 	while ((ch = getopt(argc, argv, "IS:s:")) != -1) {
6332 		switch (ch) {
6333 		case 'I':
6334 			no_ignores = 1;
6335 			break;
6336 		case 'S':
6337 			if (st.status_codes != NULL && st.suppress == 0)
6338 				option_conflict('S', 's');
6339 			st.suppress = 1;
6340 			/* fallthrough */
6341 		case 's':
6342 			for (i = 0; i < strlen(optarg); i++) {
6343 				switch (optarg[i]) {
6344 				case GOT_STATUS_MODIFY:
6345 				case GOT_STATUS_ADD:
6346 				case GOT_STATUS_DELETE:
6347 				case GOT_STATUS_CONFLICT:
6348 				case GOT_STATUS_MISSING:
6349 				case GOT_STATUS_OBSTRUCTED:
6350 				case GOT_STATUS_UNVERSIONED:
6351 				case GOT_STATUS_MODE_CHANGE:
6352 				case GOT_STATUS_NONEXISTENT:
6353 					break;
6354 				default:
6355 					errx(1, "invalid status code '%c'",
6356 					    optarg[i]);
6357 				}
6358 			}
6359 			if (ch == 's' && st.suppress)
6360 				option_conflict('s', 'S');
6361 			st.status_codes = optarg;
6362 			break;
6363 		default:
6364 			usage_status();
6365 			/* NOTREACHED */
6366 		}
6367 	}
6368 
6369 	argc -= optind;
6370 	argv += optind;
6371 
6372 	cwd = getcwd(NULL, 0);
6373 	if (cwd == NULL) {
6374 		error = got_error_from_errno("getcwd");
6375 		goto done;
6376 	}
6377 
6378 	error = got_repo_pack_fds_open(&pack_fds);
6379 	if (error != NULL)
6380 		goto done;
6381 
6382 	error = got_worktree_open(&worktree, cwd);
6383 	if (error) {
6384 		if (error->code == GOT_ERR_NOT_WORKTREE)
6385 			error = wrap_not_worktree_error(error, "status", cwd);
6386 		goto done;
6387 	}
6388 
6389 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
6390 	    NULL, pack_fds);
6391 	if (error != NULL)
6392 		goto done;
6393 
6394 	error = apply_unveil(got_repo_get_path(repo), 1,
6395 	    got_worktree_get_root_path(worktree));
6396 	if (error)
6397 		goto done;
6398 
6399 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
6400 	if (error)
6401 		goto done;
6402 
6403 	error = got_worktree_status(worktree, &paths, repo, no_ignores,
6404 	    print_status, &st, check_cancelled, NULL);
6405 done:
6406 	if (pack_fds) {
6407 		const struct got_error *pack_err =
6408 		    got_repo_pack_fds_close(pack_fds);
6409 		if (error == NULL)
6410 			error = pack_err;
6411 	}
6412 	if (repo) {
6413 		const struct got_error *close_err = got_repo_close(repo);
6414 		if (error == NULL)
6415 			error = close_err;
6416 	}
6417 
6418 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_PATH);
6419 	free(cwd);
6420 	return error;
6421 }
6422 
6423 __dead static void
6424 usage_ref(void)
6425 {
6426 	fprintf(stderr, "usage: %s ref [-dlt] [-c object] [-r repository-path] "
6427 	    "[-s reference] [name]\n", getprogname());
6428 	exit(1);
6429 }
6430 
6431 static const struct got_error *
6432 list_refs(struct got_repository *repo, const char *refname, int sort_by_time)
6433 {
6434 	static const struct got_error *err = NULL;
6435 	struct got_reflist_head refs;
6436 	struct got_reflist_entry *re;
6437 
6438 	TAILQ_INIT(&refs);
6439 	err = got_ref_list(&refs, repo, refname, sort_by_time ?
6440 	    got_ref_cmp_by_commit_timestamp_descending : got_ref_cmp_by_name,
6441 	    repo);
6442 	if (err)
6443 		return err;
6444 
6445 	TAILQ_FOREACH(re, &refs, entry) {
6446 		char *refstr;
6447 		refstr = got_ref_to_str(re->ref);
6448 		if (refstr == NULL) {
6449 			err = got_error_from_errno("got_ref_to_str");
6450 			break;
6451 		}
6452 		printf("%s: %s\n", got_ref_get_name(re->ref), refstr);
6453 		free(refstr);
6454 	}
6455 
6456 	got_ref_list_free(&refs);
6457 	return err;
6458 }
6459 
6460 static const struct got_error *
6461 delete_ref_by_name(struct got_repository *repo, const char *refname)
6462 {
6463 	const struct got_error *err;
6464 	struct got_reference *ref;
6465 
6466 	err = got_ref_open(&ref, repo, refname, 0);
6467 	if (err)
6468 		return err;
6469 
6470 	err = delete_ref(repo, ref);
6471 	got_ref_close(ref);
6472 	return err;
6473 }
6474 
6475 static const struct got_error *
6476 add_ref(struct got_repository *repo, const char *refname, const char *target)
6477 {
6478 	const struct got_error *err = NULL;
6479 	struct got_object_id *id = NULL;
6480 	struct got_reference *ref = NULL;
6481 	struct got_reflist_head refs;
6482 
6483 	/*
6484 	 * Don't let the user create a reference name with a leading '-'.
6485 	 * While technically a valid reference name, this case is usually
6486 	 * an unintended typo.
6487 	 */
6488 	if (refname[0] == '-')
6489 		return got_error_path(refname, GOT_ERR_REF_NAME_MINUS);
6490 
6491 	TAILQ_INIT(&refs);
6492 	err = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name, NULL);
6493 	if (err)
6494 		goto done;
6495 	err = got_repo_match_object_id(&id, NULL, target, GOT_OBJ_TYPE_ANY,
6496 	    &refs, repo);
6497 	got_ref_list_free(&refs);
6498 	if (err)
6499 		goto done;
6500 
6501 	err = got_ref_alloc(&ref, refname, id);
6502 	if (err)
6503 		goto done;
6504 
6505 	err = got_ref_write(ref, repo);
6506 done:
6507 	if (ref)
6508 		got_ref_close(ref);
6509 	free(id);
6510 	return err;
6511 }
6512 
6513 static const struct got_error *
6514 add_symref(struct got_repository *repo, const char *refname, const char *target)
6515 {
6516 	const struct got_error *err = NULL;
6517 	struct got_reference *ref = NULL;
6518 	struct got_reference *target_ref = NULL;
6519 
6520 	/*
6521 	 * Don't let the user create a reference name with a leading '-'.
6522 	 * While technically a valid reference name, this case is usually
6523 	 * an unintended typo.
6524 	 */
6525 	if (refname[0] == '-')
6526 		return got_error_path(refname, GOT_ERR_REF_NAME_MINUS);
6527 
6528 	err = got_ref_open(&target_ref, repo, target, 0);
6529 	if (err)
6530 		return err;
6531 
6532 	err = got_ref_alloc_symref(&ref, refname, target_ref);
6533 	if (err)
6534 		goto done;
6535 
6536 	err = got_ref_write(ref, repo);
6537 done:
6538 	if (target_ref)
6539 		got_ref_close(target_ref);
6540 	if (ref)
6541 		got_ref_close(ref);
6542 	return err;
6543 }
6544 
6545 static const struct got_error *
6546 cmd_ref(int argc, char *argv[])
6547 {
6548 	const struct got_error *error = NULL;
6549 	struct got_repository *repo = NULL;
6550 	struct got_worktree *worktree = NULL;
6551 	char *cwd = NULL, *repo_path = NULL;
6552 	int ch, do_list = 0, do_delete = 0, sort_by_time = 0;
6553 	const char *obj_arg = NULL, *symref_target= NULL;
6554 	char *refname = NULL;
6555 	int *pack_fds = NULL;
6556 
6557 #ifndef PROFILE
6558 	if (pledge("stdio rpath wpath cpath fattr flock proc exec "
6559 	    "sendfd unveil", NULL) == -1)
6560 		err(1, "pledge");
6561 #endif
6562 
6563 	while ((ch = getopt(argc, argv, "c:dlr:s:t")) != -1) {
6564 		switch (ch) {
6565 		case 'c':
6566 			obj_arg = optarg;
6567 			break;
6568 		case 'd':
6569 			do_delete = 1;
6570 			break;
6571 		case 'l':
6572 			do_list = 1;
6573 			break;
6574 		case 'r':
6575 			repo_path = realpath(optarg, NULL);
6576 			if (repo_path == NULL)
6577 				return got_error_from_errno2("realpath",
6578 				    optarg);
6579 			got_path_strip_trailing_slashes(repo_path);
6580 			break;
6581 		case 's':
6582 			symref_target = optarg;
6583 			break;
6584 		case 't':
6585 			sort_by_time = 1;
6586 			break;
6587 		default:
6588 			usage_ref();
6589 			/* NOTREACHED */
6590 		}
6591 	}
6592 
6593 	if (obj_arg && do_list)
6594 		option_conflict('c', 'l');
6595 	if (obj_arg && do_delete)
6596 		option_conflict('c', 'd');
6597 	if (obj_arg && symref_target)
6598 		option_conflict('c', 's');
6599 	if (symref_target && do_delete)
6600 		option_conflict('s', 'd');
6601 	if (symref_target && do_list)
6602 		option_conflict('s', 'l');
6603 	if (do_delete && do_list)
6604 		option_conflict('d', 'l');
6605 	if (sort_by_time && !do_list)
6606 		errx(1, "-t option requires -l option");
6607 
6608 	argc -= optind;
6609 	argv += optind;
6610 
6611 	if (do_list) {
6612 		if (argc != 0 && argc != 1)
6613 			usage_ref();
6614 		if (argc == 1) {
6615 			refname = strdup(argv[0]);
6616 			if (refname == NULL) {
6617 				error = got_error_from_errno("strdup");
6618 				goto done;
6619 			}
6620 		}
6621 	} else {
6622 		if (argc != 1)
6623 			usage_ref();
6624 		refname = strdup(argv[0]);
6625 		if (refname == NULL) {
6626 			error = got_error_from_errno("strdup");
6627 			goto done;
6628 		}
6629 	}
6630 
6631 	if (refname)
6632 		got_path_strip_trailing_slashes(refname);
6633 
6634 	cwd = getcwd(NULL, 0);
6635 	if (cwd == NULL) {
6636 		error = got_error_from_errno("getcwd");
6637 		goto done;
6638 	}
6639 
6640 	error = got_repo_pack_fds_open(&pack_fds);
6641 	if (error != NULL)
6642 		goto done;
6643 
6644 	if (repo_path == NULL) {
6645 		error = got_worktree_open(&worktree, cwd);
6646 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
6647 			goto done;
6648 		else
6649 			error = NULL;
6650 		if (worktree) {
6651 			repo_path =
6652 			    strdup(got_worktree_get_repo_path(worktree));
6653 			if (repo_path == NULL)
6654 				error = got_error_from_errno("strdup");
6655 			if (error)
6656 				goto done;
6657 		} else {
6658 			repo_path = strdup(cwd);
6659 			if (repo_path == NULL) {
6660 				error = got_error_from_errno("strdup");
6661 				goto done;
6662 			}
6663 		}
6664 	}
6665 
6666 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
6667 	if (error != NULL)
6668 		goto done;
6669 
6670 #ifndef PROFILE
6671 	if (do_list) {
6672 		/* Remove "cpath" promise. */
6673 		if (pledge("stdio rpath wpath flock proc exec sendfd unveil",
6674 		    NULL) == -1)
6675 			err(1, "pledge");
6676 	}
6677 #endif
6678 
6679 	error = apply_unveil(got_repo_get_path(repo), do_list,
6680 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
6681 	if (error)
6682 		goto done;
6683 
6684 	if (do_list)
6685 		error = list_refs(repo, refname, sort_by_time);
6686 	else if (do_delete)
6687 		error = delete_ref_by_name(repo, refname);
6688 	else if (symref_target)
6689 		error = add_symref(repo, refname, symref_target);
6690 	else {
6691 		if (obj_arg == NULL)
6692 			usage_ref();
6693 		error = add_ref(repo, refname, obj_arg);
6694 	}
6695 done:
6696 	free(refname);
6697 	if (repo) {
6698 		const struct got_error *close_err = got_repo_close(repo);
6699 		if (error == NULL)
6700 			error = close_err;
6701 	}
6702 	if (worktree)
6703 		got_worktree_close(worktree);
6704 	if (pack_fds) {
6705 		const struct got_error *pack_err =
6706 		    got_repo_pack_fds_close(pack_fds);
6707 		if (error == NULL)
6708 			error = pack_err;
6709 	}
6710 	free(cwd);
6711 	free(repo_path);
6712 	return error;
6713 }
6714 
6715 __dead static void
6716 usage_branch(void)
6717 {
6718 	fprintf(stderr, "usage: %s branch [-lnt] [-c commit] [-d name] "
6719 	    "[-r repository-path] [name]\n", getprogname());
6720 	exit(1);
6721 }
6722 
6723 static const struct got_error *
6724 list_branch(struct got_repository *repo, struct got_worktree *worktree,
6725     struct got_reference *ref)
6726 {
6727 	const struct got_error *err = NULL;
6728 	const char *refname, *marker = "  ";
6729 	char *refstr;
6730 
6731 	refname = got_ref_get_name(ref);
6732 	if (worktree && strcmp(refname,
6733 	    got_worktree_get_head_ref_name(worktree)) == 0) {
6734 		struct got_object_id *id = NULL;
6735 
6736 		err = got_ref_resolve(&id, repo, ref);
6737 		if (err)
6738 			return err;
6739 		if (got_object_id_cmp(id,
6740 		    got_worktree_get_base_commit_id(worktree)) == 0)
6741 			marker = "* ";
6742 		else
6743 			marker = "~ ";
6744 		free(id);
6745 	}
6746 
6747 	if (strncmp(refname, "refs/heads/", 11) == 0)
6748 		refname += 11;
6749 	if (strncmp(refname, "refs/got/worktree/", 18) == 0)
6750 		refname += 18;
6751 	if (strncmp(refname, "refs/remotes/", 13) == 0)
6752 		refname += 13;
6753 
6754 	refstr = got_ref_to_str(ref);
6755 	if (refstr == NULL)
6756 		return got_error_from_errno("got_ref_to_str");
6757 
6758 	printf("%s%s: %s\n", marker, refname, refstr);
6759 	free(refstr);
6760 	return NULL;
6761 }
6762 
6763 static const struct got_error *
6764 show_current_branch(struct got_repository *repo, struct got_worktree *worktree)
6765 {
6766 	const char *refname;
6767 
6768 	if (worktree == NULL)
6769 		return got_error(GOT_ERR_NOT_WORKTREE);
6770 
6771 	refname = got_worktree_get_head_ref_name(worktree);
6772 
6773 	if (strncmp(refname, "refs/heads/", 11) == 0)
6774 		refname += 11;
6775 	if (strncmp(refname, "refs/got/worktree/", 18) == 0)
6776 		refname += 18;
6777 
6778 	printf("%s\n", refname);
6779 
6780 	return NULL;
6781 }
6782 
6783 static const struct got_error *
6784 list_branches(struct got_repository *repo, struct got_worktree *worktree,
6785     int sort_by_time)
6786 {
6787 	static const struct got_error *err = NULL;
6788 	struct got_reflist_head refs;
6789 	struct got_reflist_entry *re;
6790 	struct got_reference *temp_ref = NULL;
6791 	int rebase_in_progress, histedit_in_progress;
6792 
6793 	TAILQ_INIT(&refs);
6794 
6795 	if (worktree) {
6796 		err = got_worktree_rebase_in_progress(&rebase_in_progress,
6797 		    worktree);
6798 		if (err)
6799 			return err;
6800 
6801 		err = got_worktree_histedit_in_progress(&histedit_in_progress,
6802 		    worktree);
6803 		if (err)
6804 			return err;
6805 
6806 		if (rebase_in_progress || histedit_in_progress) {
6807 			err = got_ref_open(&temp_ref, repo,
6808 			    got_worktree_get_head_ref_name(worktree), 0);
6809 			if (err)
6810 				return err;
6811 			list_branch(repo, worktree, temp_ref);
6812 			got_ref_close(temp_ref);
6813 		}
6814 	}
6815 
6816 	err = got_ref_list(&refs, repo, "refs/heads", sort_by_time ?
6817 	    got_ref_cmp_by_commit_timestamp_descending : got_ref_cmp_by_name,
6818 	    repo);
6819 	if (err)
6820 		return err;
6821 
6822 	TAILQ_FOREACH(re, &refs, entry)
6823 		list_branch(repo, worktree, re->ref);
6824 
6825 	got_ref_list_free(&refs);
6826 
6827 	err = got_ref_list(&refs, repo, "refs/remotes", sort_by_time ?
6828 	    got_ref_cmp_by_commit_timestamp_descending : got_ref_cmp_by_name,
6829 	    repo);
6830 	if (err)
6831 		return err;
6832 
6833 	TAILQ_FOREACH(re, &refs, entry)
6834 		list_branch(repo, worktree, re->ref);
6835 
6836 	got_ref_list_free(&refs);
6837 
6838 	return NULL;
6839 }
6840 
6841 static const struct got_error *
6842 delete_branch(struct got_repository *repo, struct got_worktree *worktree,
6843     const char *branch_name)
6844 {
6845 	const struct got_error *err = NULL;
6846 	struct got_reference *ref = NULL;
6847 	char *refname, *remote_refname = NULL;
6848 
6849 	if (strncmp(branch_name, "refs/", 5) == 0)
6850 		branch_name += 5;
6851 	if (strncmp(branch_name, "heads/", 6) == 0)
6852 		branch_name += 6;
6853 	else if (strncmp(branch_name, "remotes/", 8) == 0)
6854 		branch_name += 8;
6855 
6856 	if (asprintf(&refname, "refs/heads/%s", branch_name) == -1)
6857 		return got_error_from_errno("asprintf");
6858 
6859 	if (asprintf(&remote_refname, "refs/remotes/%s",
6860 	    branch_name) == -1) {
6861 		err = got_error_from_errno("asprintf");
6862 		goto done;
6863 	}
6864 
6865 	err = got_ref_open(&ref, repo, refname, 0);
6866 	if (err) {
6867 		const struct got_error *err2;
6868 		if (err->code != GOT_ERR_NOT_REF)
6869 			goto done;
6870 		/*
6871 		 * Keep 'err' intact such that if neither branch exists
6872 		 * we report "refs/heads" rather than "refs/remotes" in
6873 		 * our error message.
6874 		 */
6875 		err2 = got_ref_open(&ref, repo, remote_refname, 0);
6876 		if (err2)
6877 			goto done;
6878 		err = NULL;
6879 	}
6880 
6881 	if (worktree &&
6882 	    strcmp(got_worktree_get_head_ref_name(worktree),
6883 	    got_ref_get_name(ref)) == 0) {
6884 		err = got_error_msg(GOT_ERR_SAME_BRANCH,
6885 		    "will not delete this work tree's current branch");
6886 		goto done;
6887 	}
6888 
6889 	err = delete_ref(repo, ref);
6890 done:
6891 	if (ref)
6892 		got_ref_close(ref);
6893 	free(refname);
6894 	free(remote_refname);
6895 	return err;
6896 }
6897 
6898 static const struct got_error *
6899 add_branch(struct got_repository *repo, const char *branch_name,
6900     struct got_object_id *base_commit_id)
6901 {
6902 	const struct got_error *err = NULL;
6903 	struct got_reference *ref = NULL;
6904 	char *refname = NULL;
6905 
6906 	/*
6907 	 * Don't let the user create a branch name with a leading '-'.
6908 	 * While technically a valid reference name, this case is usually
6909 	 * an unintended typo.
6910 	 */
6911 	if (branch_name[0] == '-')
6912 		return got_error_path(branch_name, GOT_ERR_REF_NAME_MINUS);
6913 
6914 	if (strncmp(branch_name, "refs/heads/", 11) == 0)
6915 		branch_name += 11;
6916 
6917 	if (asprintf(&refname, "refs/heads/%s", branch_name) == -1) {
6918 		err = got_error_from_errno("asprintf");
6919 		goto done;
6920 	}
6921 
6922 	err = got_ref_open(&ref, repo, refname, 0);
6923 	if (err == NULL) {
6924 		err = got_error(GOT_ERR_BRANCH_EXISTS);
6925 		goto done;
6926 	} else if (err->code != GOT_ERR_NOT_REF)
6927 		goto done;
6928 
6929 	err = got_ref_alloc(&ref, refname, base_commit_id);
6930 	if (err)
6931 		goto done;
6932 
6933 	err = got_ref_write(ref, repo);
6934 done:
6935 	if (ref)
6936 		got_ref_close(ref);
6937 	free(refname);
6938 	return err;
6939 }
6940 
6941 static const struct got_error *
6942 cmd_branch(int argc, char *argv[])
6943 {
6944 	const struct got_error *error = NULL;
6945 	struct got_repository *repo = NULL;
6946 	struct got_worktree *worktree = NULL;
6947 	char *cwd = NULL, *repo_path = NULL;
6948 	int ch, do_list = 0, do_show = 0, do_update = 1, sort_by_time = 0;
6949 	const char *delref = NULL, *commit_id_arg = NULL;
6950 	struct got_reference *ref = NULL;
6951 	struct got_pathlist_head paths;
6952 	struct got_object_id *commit_id = NULL;
6953 	char *commit_id_str = NULL;
6954 	int *pack_fds = NULL;
6955 
6956 	TAILQ_INIT(&paths);
6957 
6958 #ifndef PROFILE
6959 	if (pledge("stdio rpath wpath cpath fattr flock proc exec "
6960 	    "sendfd unveil", NULL) == -1)
6961 		err(1, "pledge");
6962 #endif
6963 
6964 	while ((ch = getopt(argc, argv, "c:d:lnr:t")) != -1) {
6965 		switch (ch) {
6966 		case 'c':
6967 			commit_id_arg = optarg;
6968 			break;
6969 		case 'd':
6970 			delref = optarg;
6971 			break;
6972 		case 'l':
6973 			do_list = 1;
6974 			break;
6975 		case 'n':
6976 			do_update = 0;
6977 			break;
6978 		case 'r':
6979 			repo_path = realpath(optarg, NULL);
6980 			if (repo_path == NULL)
6981 				return got_error_from_errno2("realpath",
6982 				    optarg);
6983 			got_path_strip_trailing_slashes(repo_path);
6984 			break;
6985 		case 't':
6986 			sort_by_time = 1;
6987 			break;
6988 		default:
6989 			usage_branch();
6990 			/* NOTREACHED */
6991 		}
6992 	}
6993 
6994 	if (do_list && delref)
6995 		option_conflict('l', 'd');
6996 	if (sort_by_time && !do_list)
6997 		errx(1, "-t option requires -l option");
6998 
6999 	argc -= optind;
7000 	argv += optind;
7001 
7002 	if (!do_list && !delref && argc == 0)
7003 		do_show = 1;
7004 
7005 	if ((do_list || delref || do_show) && commit_id_arg != NULL)
7006 		errx(1, "-c option can only be used when creating a branch");
7007 
7008 	if (do_list || delref) {
7009 		if (argc > 0)
7010 			usage_branch();
7011 	} else if (!do_show && argc != 1)
7012 		usage_branch();
7013 
7014 	cwd = getcwd(NULL, 0);
7015 	if (cwd == NULL) {
7016 		error = got_error_from_errno("getcwd");
7017 		goto done;
7018 	}
7019 
7020 	error = got_repo_pack_fds_open(&pack_fds);
7021 	if (error != NULL)
7022 		goto done;
7023 
7024 	if (repo_path == NULL) {
7025 		error = got_worktree_open(&worktree, cwd);
7026 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
7027 			goto done;
7028 		else
7029 			error = NULL;
7030 		if (worktree) {
7031 			repo_path =
7032 			    strdup(got_worktree_get_repo_path(worktree));
7033 			if (repo_path == NULL)
7034 				error = got_error_from_errno("strdup");
7035 			if (error)
7036 				goto done;
7037 		} else {
7038 			repo_path = strdup(cwd);
7039 			if (repo_path == NULL) {
7040 				error = got_error_from_errno("strdup");
7041 				goto done;
7042 			}
7043 		}
7044 	}
7045 
7046 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
7047 	if (error != NULL)
7048 		goto done;
7049 
7050 #ifndef PROFILE
7051 	if (do_list || do_show) {
7052 		/* Remove "cpath" promise. */
7053 		if (pledge("stdio rpath wpath flock proc exec sendfd unveil",
7054 		    NULL) == -1)
7055 			err(1, "pledge");
7056 	}
7057 #endif
7058 
7059 	error = apply_unveil(got_repo_get_path(repo), do_list,
7060 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
7061 	if (error)
7062 		goto done;
7063 
7064 	if (do_show)
7065 		error = show_current_branch(repo, worktree);
7066 	else if (do_list)
7067 		error = list_branches(repo, worktree, sort_by_time);
7068 	else if (delref)
7069 		error = delete_branch(repo, worktree, delref);
7070 	else {
7071 		struct got_reflist_head refs;
7072 		TAILQ_INIT(&refs);
7073 		error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name,
7074 		    NULL);
7075 		if (error)
7076 			goto done;
7077 		if (commit_id_arg == NULL)
7078 			commit_id_arg = worktree ?
7079 			    got_worktree_get_head_ref_name(worktree) :
7080 			    GOT_REF_HEAD;
7081 		error = got_repo_match_object_id(&commit_id, NULL,
7082 		    commit_id_arg, GOT_OBJ_TYPE_COMMIT, &refs, repo);
7083 		got_ref_list_free(&refs);
7084 		if (error)
7085 			goto done;
7086 		error = add_branch(repo, argv[0], commit_id);
7087 		if (error)
7088 			goto done;
7089 		if (worktree && do_update) {
7090 			struct got_update_progress_arg upa;
7091 			char *branch_refname = NULL;
7092 
7093 			error = got_object_id_str(&commit_id_str, commit_id);
7094 			if (error)
7095 				goto done;
7096 			error = get_worktree_paths_from_argv(&paths, 0, NULL,
7097 			    worktree);
7098 			if (error)
7099 				goto done;
7100 			if (asprintf(&branch_refname, "refs/heads/%s", argv[0])
7101 			    == -1) {
7102 				error = got_error_from_errno("asprintf");
7103 				goto done;
7104 			}
7105 			error = got_ref_open(&ref, repo, branch_refname, 0);
7106 			free(branch_refname);
7107 			if (error)
7108 				goto done;
7109 			error = switch_head_ref(ref, commit_id, worktree,
7110 			    repo);
7111 			if (error)
7112 				goto done;
7113 			error = got_worktree_set_base_commit_id(worktree, repo,
7114 			    commit_id);
7115 			if (error)
7116 				goto done;
7117 			memset(&upa, 0, sizeof(upa));
7118 			error = got_worktree_checkout_files(worktree, &paths,
7119 			    repo, update_progress, &upa, check_cancelled,
7120 			    NULL);
7121 			if (error)
7122 				goto done;
7123 			if (upa.did_something) {
7124 				printf("Updated to %s: %s\n",
7125 				    got_worktree_get_head_ref_name(worktree),
7126 				    commit_id_str);
7127 			}
7128 			print_update_progress_stats(&upa);
7129 		}
7130 	}
7131 done:
7132 	if (ref)
7133 		got_ref_close(ref);
7134 	if (repo) {
7135 		const struct got_error *close_err = got_repo_close(repo);
7136 		if (error == NULL)
7137 			error = close_err;
7138 	}
7139 	if (worktree)
7140 		got_worktree_close(worktree);
7141 	if (pack_fds) {
7142 		const struct got_error *pack_err =
7143 		    got_repo_pack_fds_close(pack_fds);
7144 		if (error == NULL)
7145 			error = pack_err;
7146 	}
7147 	free(cwd);
7148 	free(repo_path);
7149 	free(commit_id);
7150 	free(commit_id_str);
7151 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_PATH);
7152 	return error;
7153 }
7154 
7155 
7156 __dead static void
7157 usage_tag(void)
7158 {
7159 	fprintf(stderr, "usage: %s tag [-lVv] [-c commit] [-m message] "
7160 	    "[-r repository-path] [-s signer-id] name\n", getprogname());
7161 	exit(1);
7162 }
7163 
7164 #if 0
7165 static const struct got_error *
7166 sort_tags(struct got_reflist_head *sorted, struct got_reflist_head *tags)
7167 {
7168 	const struct got_error *err = NULL;
7169 	struct got_reflist_entry *re, *se, *new;
7170 	struct got_object_id *re_id, *se_id;
7171 	struct got_tag_object *re_tag, *se_tag;
7172 	time_t re_time, se_time;
7173 
7174 	STAILQ_FOREACH(re, tags, entry) {
7175 		se = STAILQ_FIRST(sorted);
7176 		if (se == NULL) {
7177 			err = got_reflist_entry_dup(&new, re);
7178 			if (err)
7179 				return err;
7180 			STAILQ_INSERT_HEAD(sorted, new, entry);
7181 			continue;
7182 		} else {
7183 			err = got_ref_resolve(&re_id, repo, re->ref);
7184 			if (err)
7185 				break;
7186 			err = got_object_open_as_tag(&re_tag, repo, re_id);
7187 			free(re_id);
7188 			if (err)
7189 				break;
7190 			re_time = got_object_tag_get_tagger_time(re_tag);
7191 			got_object_tag_close(re_tag);
7192 		}
7193 
7194 		while (se) {
7195 			err = got_ref_resolve(&se_id, repo, re->ref);
7196 			if (err)
7197 				break;
7198 			err = got_object_open_as_tag(&se_tag, repo, se_id);
7199 			free(se_id);
7200 			if (err)
7201 				break;
7202 			se_time = got_object_tag_get_tagger_time(se_tag);
7203 			got_object_tag_close(se_tag);
7204 
7205 			if (se_time > re_time) {
7206 				err = got_reflist_entry_dup(&new, re);
7207 				if (err)
7208 					return err;
7209 				STAILQ_INSERT_AFTER(sorted, se, new, entry);
7210 				break;
7211 			}
7212 			se = STAILQ_NEXT(se, entry);
7213 			continue;
7214 		}
7215 	}
7216 done:
7217 	return err;
7218 }
7219 #endif
7220 
7221 static const struct got_error *
7222 get_tag_refname(char **refname, const char *tag_name)
7223 {
7224 	const struct got_error *err;
7225 
7226 	if (strncmp("refs/tags/", tag_name, 10) == 0) {
7227 		*refname = strdup(tag_name);
7228 		if (*refname == NULL)
7229 			return got_error_from_errno("strdup");
7230 	} else if (asprintf(refname, "refs/tags/%s", tag_name) == -1) {
7231 		err = got_error_from_errno("asprintf");
7232 		*refname = NULL;
7233 		return err;
7234 	}
7235 
7236 	return NULL;
7237 }
7238 
7239 static const struct got_error *
7240 list_tags(struct got_repository *repo, const char *tag_name, int verify_tags,
7241     const char *allowed_signers, const char *revoked_signers, int verbosity)
7242 {
7243 	static const struct got_error *err = NULL;
7244 	struct got_reflist_head refs;
7245 	struct got_reflist_entry *re;
7246 	char *wanted_refname = NULL;
7247 	int bad_sigs = 0;
7248 
7249 	TAILQ_INIT(&refs);
7250 
7251 	err = got_ref_list(&refs, repo, "refs/tags", got_ref_cmp_tags, repo);
7252 	if (err)
7253 		return err;
7254 
7255 	if (tag_name) {
7256 		struct got_reference *ref;
7257 		err = get_tag_refname(&wanted_refname, tag_name);
7258 		if (err)
7259 			goto done;
7260 		/* Wanted tag reference should exist. */
7261 		err = got_ref_open(&ref, repo, wanted_refname, 0);
7262 		if (err)
7263 			goto done;
7264 		got_ref_close(ref);
7265 	}
7266 
7267 	TAILQ_FOREACH(re, &refs, entry) {
7268 		const char *refname;
7269 		char *refstr, *tagmsg0, *tagmsg, *line, *id_str, *datestr;
7270 		char datebuf[26];
7271 		const char *tagger, *ssh_sig = NULL;
7272 		char *sig_msg = NULL;
7273 		time_t tagger_time;
7274 		struct got_object_id *id;
7275 		struct got_tag_object *tag;
7276 		struct got_commit_object *commit = NULL;
7277 
7278 		refname = got_ref_get_name(re->ref);
7279 		if (strncmp(refname, "refs/tags/", 10) != 0 ||
7280 		    (wanted_refname && strcmp(refname, wanted_refname) != 0))
7281 			continue;
7282 		refname += 10;
7283 		refstr = got_ref_to_str(re->ref);
7284 		if (refstr == NULL) {
7285 			err = got_error_from_errno("got_ref_to_str");
7286 			break;
7287 		}
7288 
7289 		err = got_ref_resolve(&id, repo, re->ref);
7290 		if (err)
7291 			break;
7292 		err = got_object_open_as_tag(&tag, repo, id);
7293 		if (err) {
7294 			if (err->code != GOT_ERR_OBJ_TYPE) {
7295 				free(id);
7296 				break;
7297 			}
7298 			/* "lightweight" tag */
7299 			err = got_object_open_as_commit(&commit, repo, id);
7300 			if (err) {
7301 				free(id);
7302 				break;
7303 			}
7304 			tagger = got_object_commit_get_committer(commit);
7305 			tagger_time =
7306 			    got_object_commit_get_committer_time(commit);
7307 			err = got_object_id_str(&id_str, id);
7308 			free(id);
7309 			if (err)
7310 				break;
7311 		} else {
7312 			free(id);
7313 			tagger = got_object_tag_get_tagger(tag);
7314 			tagger_time = got_object_tag_get_tagger_time(tag);
7315 			err = got_object_id_str(&id_str,
7316 			    got_object_tag_get_object_id(tag));
7317 			if (err)
7318 				break;
7319 		}
7320 
7321 		if (tag && verify_tags) {
7322 			ssh_sig = got_sigs_get_tagmsg_ssh_signature(
7323 			    got_object_tag_get_message(tag));
7324 			if (ssh_sig && allowed_signers == NULL) {
7325 				err = got_error_msg(
7326 				    GOT_ERR_VERIFY_TAG_SIGNATURE,
7327 				    "SSH signature verification requires "
7328 				        "setting allowed_signers in "
7329 				        "got.conf(5)");
7330 				break;
7331 			}
7332 		}
7333 
7334 		printf("%stag %s %s\n", GOT_COMMIT_SEP_STR, refname, refstr);
7335 		free(refstr);
7336 		printf("from: %s\n", tagger);
7337 		datestr = get_datestr(&tagger_time, datebuf);
7338 		if (datestr)
7339 			printf("date: %s UTC\n", datestr);
7340 		if (commit)
7341 			printf("object: %s %s\n", GOT_OBJ_LABEL_COMMIT, id_str);
7342 		else {
7343 			switch (got_object_tag_get_object_type(tag)) {
7344 			case GOT_OBJ_TYPE_BLOB:
7345 				printf("object: %s %s\n", GOT_OBJ_LABEL_BLOB,
7346 				    id_str);
7347 				break;
7348 			case GOT_OBJ_TYPE_TREE:
7349 				printf("object: %s %s\n", GOT_OBJ_LABEL_TREE,
7350 				    id_str);
7351 				break;
7352 			case GOT_OBJ_TYPE_COMMIT:
7353 				printf("object: %s %s\n", GOT_OBJ_LABEL_COMMIT,
7354 				    id_str);
7355 				break;
7356 			case GOT_OBJ_TYPE_TAG:
7357 				printf("object: %s %s\n", GOT_OBJ_LABEL_TAG,
7358 				    id_str);
7359 				break;
7360 			default:
7361 				break;
7362 			}
7363 		}
7364 		free(id_str);
7365 
7366 		if (ssh_sig) {
7367 			err = got_sigs_verify_tag_ssh(&sig_msg, tag, ssh_sig,
7368 				allowed_signers, revoked_signers, verbosity);
7369 			if (err && err->code == GOT_ERR_BAD_TAG_SIGNATURE)
7370 				bad_sigs = 1;
7371 			else if (err)
7372 				break;
7373 			printf("signature: %s", sig_msg);
7374 			free(sig_msg);
7375 			sig_msg = NULL;
7376 		}
7377 
7378 		if (commit) {
7379 			err = got_object_commit_get_logmsg(&tagmsg0, commit);
7380 			if (err)
7381 				break;
7382 			got_object_commit_close(commit);
7383 		} else {
7384 			tagmsg0 = strdup(got_object_tag_get_message(tag));
7385 			got_object_tag_close(tag);
7386 			if (tagmsg0 == NULL) {
7387 				err = got_error_from_errno("strdup");
7388 				break;
7389 			}
7390 		}
7391 
7392 		tagmsg = tagmsg0;
7393 		do {
7394 			line = strsep(&tagmsg, "\n");
7395 			if (line)
7396 				printf(" %s\n", line);
7397 		} while (line);
7398 		free(tagmsg0);
7399 	}
7400 done:
7401 	got_ref_list_free(&refs);
7402 	free(wanted_refname);
7403 
7404 	if (err == NULL && bad_sigs)
7405 		err = got_error(GOT_ERR_BAD_TAG_SIGNATURE);
7406 	return err;
7407 }
7408 
7409 static const struct got_error *
7410 get_tag_message(char **tagmsg, char **tagmsg_path, const char *commit_id_str,
7411     const char *tag_name, const char *repo_path)
7412 {
7413 	const struct got_error *err = NULL;
7414 	char *template = NULL, *initial_content = NULL;
7415 	char *editor = NULL;
7416 	int initial_content_len;
7417 	int fd = -1;
7418 
7419 	if (asprintf(&template, GOT_TMPDIR_STR "/got-tagmsg") == -1) {
7420 		err = got_error_from_errno("asprintf");
7421 		goto done;
7422 	}
7423 
7424 	initial_content_len = asprintf(&initial_content,
7425 	    "\n# tagging commit %s as %s\n",
7426 	    commit_id_str, tag_name);
7427 	if (initial_content_len == -1) {
7428 		err = got_error_from_errno("asprintf");
7429 		goto done;
7430 	}
7431 
7432 	err = got_opentemp_named_fd(tagmsg_path, &fd, template, "");
7433 	if (err)
7434 		goto done;
7435 
7436 	if (write(fd, initial_content, initial_content_len) == -1) {
7437 		err = got_error_from_errno2("write", *tagmsg_path);
7438 		goto done;
7439 	}
7440 	if (close(fd) == -1) {
7441 		err = got_error_from_errno2("close", *tagmsg_path);
7442 		goto done;
7443 	}
7444 	fd = -1;
7445 
7446 	err = get_editor(&editor);
7447 	if (err)
7448 		goto done;
7449 	err = edit_logmsg(tagmsg, editor, *tagmsg_path, initial_content,
7450 	    initial_content_len, 1);
7451 done:
7452 	free(initial_content);
7453 	free(template);
7454 	free(editor);
7455 
7456 	if (fd != -1 && close(fd) == -1 && err == NULL)
7457 		err = got_error_from_errno2("close", *tagmsg_path);
7458 
7459 	if (err) {
7460 		free(*tagmsg);
7461 		*tagmsg = NULL;
7462 	}
7463 	return err;
7464 }
7465 
7466 static const struct got_error *
7467 add_tag(struct got_repository *repo, const char *tagger,
7468     const char *tag_name, const char *commit_arg, const char *tagmsg_arg,
7469     const char *signer_id, int verbosity)
7470 {
7471 	const struct got_error *err = NULL;
7472 	struct got_object_id *commit_id = NULL, *tag_id = NULL;
7473 	char *label = NULL, *commit_id_str = NULL;
7474 	struct got_reference *ref = NULL;
7475 	char *refname = NULL, *tagmsg = NULL;
7476 	char *tagmsg_path = NULL, *tag_id_str = NULL;
7477 	int preserve_tagmsg = 0;
7478 	struct got_reflist_head refs;
7479 
7480 	TAILQ_INIT(&refs);
7481 
7482 	/*
7483 	 * Don't let the user create a tag name with a leading '-'.
7484 	 * While technically a valid reference name, this case is usually
7485 	 * an unintended typo.
7486 	 */
7487 	if (tag_name[0] == '-')
7488 		return got_error_path(tag_name, GOT_ERR_REF_NAME_MINUS);
7489 
7490 	err = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name, NULL);
7491 	if (err)
7492 		goto done;
7493 
7494 	err = got_repo_match_object_id(&commit_id, &label, commit_arg,
7495 	    GOT_OBJ_TYPE_COMMIT, &refs, repo);
7496 	if (err)
7497 		goto done;
7498 
7499 	err = got_object_id_str(&commit_id_str, commit_id);
7500 	if (err)
7501 		goto done;
7502 
7503 	err = get_tag_refname(&refname, tag_name);
7504 	if (err)
7505 		goto done;
7506 	if (strncmp("refs/tags/", tag_name, 10) == 0)
7507 		tag_name += 10;
7508 
7509 	err = got_ref_open(&ref, repo, refname, 0);
7510 	if (err == NULL) {
7511 		err = got_error(GOT_ERR_TAG_EXISTS);
7512 		goto done;
7513 	} else if (err->code != GOT_ERR_NOT_REF)
7514 		goto done;
7515 
7516 	if (tagmsg_arg == NULL) {
7517 		err = get_tag_message(&tagmsg, &tagmsg_path, commit_id_str,
7518 		    tag_name, got_repo_get_path(repo));
7519 		if (err) {
7520 			if (err->code != GOT_ERR_COMMIT_MSG_EMPTY &&
7521 			    tagmsg_path != NULL)
7522 				preserve_tagmsg = 1;
7523 			goto done;
7524 		}
7525 		/* Editor is done; we can now apply unveil(2) */
7526 		err = got_sigs_apply_unveil();
7527 		if (err)
7528 			goto done;
7529 		err = apply_unveil(got_repo_get_path(repo), 0, NULL);
7530 		if (err)
7531 			goto done;
7532 	}
7533 
7534 	err = got_object_tag_create(&tag_id, tag_name, commit_id,
7535 	    tagger, time(NULL), tagmsg ? tagmsg : tagmsg_arg, signer_id, repo,
7536 	    verbosity);
7537 	if (err) {
7538 		if (tagmsg_path)
7539 			preserve_tagmsg = 1;
7540 		goto done;
7541 	}
7542 
7543 	err = got_ref_alloc(&ref, refname, tag_id);
7544 	if (err) {
7545 		if (tagmsg_path)
7546 			preserve_tagmsg = 1;
7547 		goto done;
7548 	}
7549 
7550 	err = got_ref_write(ref, repo);
7551 	if (err) {
7552 		if (tagmsg_path)
7553 			preserve_tagmsg = 1;
7554 		goto done;
7555 	}
7556 
7557 	err = got_object_id_str(&tag_id_str, tag_id);
7558 	if (err) {
7559 		if (tagmsg_path)
7560 			preserve_tagmsg = 1;
7561 		goto done;
7562 	}
7563 	printf("Created tag %s\n", tag_id_str);
7564 done:
7565 	if (preserve_tagmsg) {
7566 		fprintf(stderr, "%s: tag message preserved in %s\n",
7567 		    getprogname(), tagmsg_path);
7568 	} else if (tagmsg_path && unlink(tagmsg_path) == -1 && err == NULL)
7569 		err = got_error_from_errno2("unlink", tagmsg_path);
7570 	free(tag_id_str);
7571 	if (ref)
7572 		got_ref_close(ref);
7573 	free(commit_id);
7574 	free(commit_id_str);
7575 	free(refname);
7576 	free(tagmsg);
7577 	free(tagmsg_path);
7578 	got_ref_list_free(&refs);
7579 	return err;
7580 }
7581 
7582 static const struct got_error *
7583 cmd_tag(int argc, char *argv[])
7584 {
7585 	const struct got_error *error = NULL;
7586 	struct got_repository *repo = NULL;
7587 	struct got_worktree *worktree = NULL;
7588 	char *cwd = NULL, *repo_path = NULL, *commit_id_str = NULL;
7589 	char *gitconfig_path = NULL, *tagger = NULL;
7590 	char *allowed_signers = NULL, *revoked_signers = NULL;
7591 	const char *signer_id = NULL;
7592 	const char *tag_name = NULL, *commit_id_arg = NULL, *tagmsg = NULL;
7593 	int ch, do_list = 0, verify_tags = 0, verbosity = 0;
7594 	int *pack_fds = NULL;
7595 
7596 #ifndef PROFILE
7597 	if (pledge("stdio rpath wpath cpath fattr flock proc exec "
7598 	    "sendfd unveil", NULL) == -1)
7599 		err(1, "pledge");
7600 #endif
7601 
7602 	while ((ch = getopt(argc, argv, "c:lm:r:s:Vv")) != -1) {
7603 		switch (ch) {
7604 		case 'c':
7605 			commit_id_arg = optarg;
7606 			break;
7607 		case 'l':
7608 			do_list = 1;
7609 			break;
7610 		case 'm':
7611 			tagmsg = optarg;
7612 			break;
7613 		case 'r':
7614 			repo_path = realpath(optarg, NULL);
7615 			if (repo_path == NULL) {
7616 				error = got_error_from_errno2("realpath",
7617 				    optarg);
7618 				goto done;
7619 			}
7620 			got_path_strip_trailing_slashes(repo_path);
7621 			break;
7622 		case 's':
7623 			signer_id = optarg;
7624 			break;
7625 		case 'V':
7626 			verify_tags = 1;
7627 			break;
7628 		case 'v':
7629 			if (verbosity < 0)
7630 				verbosity = 0;
7631 			else if (verbosity < 3)
7632 				verbosity++;
7633 			break;
7634 		default:
7635 			usage_tag();
7636 			/* NOTREACHED */
7637 		}
7638 	}
7639 
7640 	argc -= optind;
7641 	argv += optind;
7642 
7643 	if (do_list || verify_tags) {
7644 		if (commit_id_arg != NULL)
7645 			errx(1,
7646 			    "-c option can only be used when creating a tag");
7647 		if (tagmsg) {
7648 			if (do_list)
7649 				option_conflict('l', 'm');
7650 			else
7651 				option_conflict('V', 'm');
7652 		}
7653 		if (signer_id) {
7654 			if (do_list)
7655 				option_conflict('l', 's');
7656 			else
7657 				option_conflict('V', 's');
7658 		}
7659 		if (argc > 1)
7660 			usage_tag();
7661 	} else if (argc != 1)
7662 		usage_tag();
7663 
7664 	if (argc == 1)
7665 		tag_name = argv[0];
7666 
7667 	cwd = getcwd(NULL, 0);
7668 	if (cwd == NULL) {
7669 		error = got_error_from_errno("getcwd");
7670 		goto done;
7671 	}
7672 
7673 	error = got_repo_pack_fds_open(&pack_fds);
7674 	if (error != NULL)
7675 		goto done;
7676 
7677 	if (repo_path == NULL) {
7678 		error = got_worktree_open(&worktree, cwd);
7679 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
7680 			goto done;
7681 		else
7682 			error = NULL;
7683 		if (worktree) {
7684 			repo_path =
7685 			    strdup(got_worktree_get_repo_path(worktree));
7686 			if (repo_path == NULL)
7687 				error = got_error_from_errno("strdup");
7688 			if (error)
7689 				goto done;
7690 		} else {
7691 			repo_path = strdup(cwd);
7692 			if (repo_path == NULL) {
7693 				error = got_error_from_errno("strdup");
7694 				goto done;
7695 			}
7696 		}
7697 	}
7698 
7699 	if (do_list || verify_tags) {
7700 		error = got_repo_open(&repo, repo_path, NULL, pack_fds);
7701 		if (error != NULL)
7702 			goto done;
7703 		error = get_allowed_signers(&allowed_signers, repo, worktree);
7704 		if (error)
7705 			goto done;
7706 		error = get_revoked_signers(&revoked_signers, repo, worktree);
7707 		if (error)
7708 			goto done;
7709 		if (worktree) {
7710 			/* Release work tree lock. */
7711 			got_worktree_close(worktree);
7712 			worktree = NULL;
7713 		}
7714 
7715 		/*
7716 		 * Remove "cpath" promise unless needed for signature tmpfile
7717 		 * creation.
7718 		 */
7719 		if (verify_tags)
7720 		 	got_sigs_apply_unveil();
7721 		else {
7722 #ifndef PROFILE
7723 			if (pledge("stdio rpath wpath flock proc exec sendfd "
7724 			    "unveil", NULL) == -1)
7725 				err(1, "pledge");
7726 #endif
7727 		}
7728 		error = apply_unveil(got_repo_get_path(repo), 1, NULL);
7729 		if (error)
7730 			goto done;
7731 		error = list_tags(repo, tag_name, verify_tags, allowed_signers,
7732 		    revoked_signers, verbosity);
7733 	} else {
7734 		error = get_gitconfig_path(&gitconfig_path);
7735 		if (error)
7736 			goto done;
7737 		error = got_repo_open(&repo, repo_path, gitconfig_path,
7738 		    pack_fds);
7739 		if (error != NULL)
7740 			goto done;
7741 
7742 		error = get_author(&tagger, repo, worktree);
7743 		if (error)
7744 			goto done;
7745 		if (signer_id == NULL)
7746 			signer_id = get_signer_id(repo, worktree);
7747 
7748 		if (tagmsg) {
7749 			if (signer_id) {
7750 				error = got_sigs_apply_unveil();
7751 				if (error)
7752 					goto done;
7753 			}
7754 			error = apply_unveil(got_repo_get_path(repo), 0, NULL);
7755 			if (error)
7756 				goto done;
7757 		}
7758 
7759 		if (commit_id_arg == NULL) {
7760 			struct got_reference *head_ref;
7761 			struct got_object_id *commit_id;
7762 			error = got_ref_open(&head_ref, repo,
7763 			    worktree ? got_worktree_get_head_ref_name(worktree)
7764 			    : GOT_REF_HEAD, 0);
7765 			if (error)
7766 				goto done;
7767 			error = got_ref_resolve(&commit_id, repo, head_ref);
7768 			got_ref_close(head_ref);
7769 			if (error)
7770 				goto done;
7771 			error = got_object_id_str(&commit_id_str, commit_id);
7772 			free(commit_id);
7773 			if (error)
7774 				goto done;
7775 		}
7776 
7777 		if (worktree) {
7778 			/* Release work tree lock. */
7779 			got_worktree_close(worktree);
7780 			worktree = NULL;
7781 		}
7782 
7783 		error = add_tag(repo, tagger, tag_name,
7784 		    commit_id_str ? commit_id_str : commit_id_arg, tagmsg,
7785 		    signer_id, verbosity);
7786 	}
7787 done:
7788 	if (repo) {
7789 		const struct got_error *close_err = got_repo_close(repo);
7790 		if (error == NULL)
7791 			error = close_err;
7792 	}
7793 	if (worktree)
7794 		got_worktree_close(worktree);
7795 	if (pack_fds) {
7796 		const struct got_error *pack_err =
7797 		    got_repo_pack_fds_close(pack_fds);
7798 		if (error == NULL)
7799 			error = pack_err;
7800 	}
7801 	free(cwd);
7802 	free(repo_path);
7803 	free(gitconfig_path);
7804 	free(commit_id_str);
7805 	free(tagger);
7806 	free(allowed_signers);
7807 	free(revoked_signers);
7808 	return error;
7809 }
7810 
7811 __dead static void
7812 usage_add(void)
7813 {
7814 	fprintf(stderr, "usage: %s add [-IR] path ...\n", getprogname());
7815 	exit(1);
7816 }
7817 
7818 static const struct got_error *
7819 add_progress(void *arg, unsigned char status, const char *path)
7820 {
7821 	while (path[0] == '/')
7822 		path++;
7823 	printf("%c  %s\n", status, path);
7824 	return NULL;
7825 }
7826 
7827 static const struct got_error *
7828 cmd_add(int argc, char *argv[])
7829 {
7830 	const struct got_error *error = NULL;
7831 	struct got_repository *repo = NULL;
7832 	struct got_worktree *worktree = NULL;
7833 	char *cwd = NULL;
7834 	struct got_pathlist_head paths;
7835 	struct got_pathlist_entry *pe;
7836 	int ch, can_recurse = 0, no_ignores = 0;
7837 	int *pack_fds = NULL;
7838 
7839 	TAILQ_INIT(&paths);
7840 
7841 #ifndef PROFILE
7842 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
7843 	    NULL) == -1)
7844 		err(1, "pledge");
7845 #endif
7846 
7847 	while ((ch = getopt(argc, argv, "IR")) != -1) {
7848 		switch (ch) {
7849 		case 'I':
7850 			no_ignores = 1;
7851 			break;
7852 		case 'R':
7853 			can_recurse = 1;
7854 			break;
7855 		default:
7856 			usage_add();
7857 			/* NOTREACHED */
7858 		}
7859 	}
7860 
7861 	argc -= optind;
7862 	argv += optind;
7863 
7864 	if (argc < 1)
7865 		usage_add();
7866 
7867 	cwd = getcwd(NULL, 0);
7868 	if (cwd == NULL) {
7869 		error = got_error_from_errno("getcwd");
7870 		goto done;
7871 	}
7872 
7873 	error = got_repo_pack_fds_open(&pack_fds);
7874 	if (error != NULL)
7875 		goto done;
7876 
7877 	error = got_worktree_open(&worktree, cwd);
7878 	if (error) {
7879 		if (error->code == GOT_ERR_NOT_WORKTREE)
7880 			error = wrap_not_worktree_error(error, "add", cwd);
7881 		goto done;
7882 	}
7883 
7884 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
7885 	    NULL, pack_fds);
7886 	if (error != NULL)
7887 		goto done;
7888 
7889 	error = apply_unveil(got_repo_get_path(repo), 1,
7890 	    got_worktree_get_root_path(worktree));
7891 	if (error)
7892 		goto done;
7893 
7894 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
7895 	if (error)
7896 		goto done;
7897 
7898 	if (!can_recurse) {
7899 		char *ondisk_path;
7900 		struct stat sb;
7901 		TAILQ_FOREACH(pe, &paths, entry) {
7902 			if (asprintf(&ondisk_path, "%s/%s",
7903 			    got_worktree_get_root_path(worktree),
7904 			    pe->path) == -1) {
7905 				error = got_error_from_errno("asprintf");
7906 				goto done;
7907 			}
7908 			if (lstat(ondisk_path, &sb) == -1) {
7909 				if (errno == ENOENT) {
7910 					free(ondisk_path);
7911 					continue;
7912 				}
7913 				error = got_error_from_errno2("lstat",
7914 				    ondisk_path);
7915 				free(ondisk_path);
7916 				goto done;
7917 			}
7918 			free(ondisk_path);
7919 			if (S_ISDIR(sb.st_mode)) {
7920 				error = got_error_msg(GOT_ERR_BAD_PATH,
7921 				    "adding directories requires -R option");
7922 				goto done;
7923 			}
7924 		}
7925 	}
7926 
7927 	error = got_worktree_schedule_add(worktree, &paths, add_progress,
7928 	    NULL, repo, no_ignores);
7929 done:
7930 	if (repo) {
7931 		const struct got_error *close_err = got_repo_close(repo);
7932 		if (error == NULL)
7933 			error = close_err;
7934 	}
7935 	if (worktree)
7936 		got_worktree_close(worktree);
7937 	if (pack_fds) {
7938 		const struct got_error *pack_err =
7939 		    got_repo_pack_fds_close(pack_fds);
7940 		if (error == NULL)
7941 			error = pack_err;
7942 	}
7943 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_PATH);
7944 	free(cwd);
7945 	return error;
7946 }
7947 
7948 __dead static void
7949 usage_remove(void)
7950 {
7951 	fprintf(stderr, "usage: %s remove [-fkR] [-s status-codes] path ...\n",
7952 	    getprogname());
7953 	exit(1);
7954 }
7955 
7956 static const struct got_error *
7957 print_remove_status(void *arg, unsigned char status,
7958     unsigned char staged_status, const char *path)
7959 {
7960 	while (path[0] == '/')
7961 		path++;
7962 	if (status == GOT_STATUS_NONEXISTENT)
7963 		return NULL;
7964 	if (status == staged_status && (status == GOT_STATUS_DELETE))
7965 		status = GOT_STATUS_NO_CHANGE;
7966 	printf("%c%c %s\n", status, staged_status, path);
7967 	return NULL;
7968 }
7969 
7970 static const struct got_error *
7971 cmd_remove(int argc, char *argv[])
7972 {
7973 	const struct got_error *error = NULL;
7974 	struct got_worktree *worktree = NULL;
7975 	struct got_repository *repo = NULL;
7976 	const char *status_codes = NULL;
7977 	char *cwd = NULL;
7978 	struct got_pathlist_head paths;
7979 	struct got_pathlist_entry *pe;
7980 	int ch, delete_local_mods = 0, can_recurse = 0, keep_on_disk = 0, i;
7981 	int ignore_missing_paths = 0;
7982 	int *pack_fds = NULL;
7983 
7984 	TAILQ_INIT(&paths);
7985 
7986 #ifndef PROFILE
7987 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
7988 	    NULL) == -1)
7989 		err(1, "pledge");
7990 #endif
7991 
7992 	while ((ch = getopt(argc, argv, "fkRs:")) != -1) {
7993 		switch (ch) {
7994 		case 'f':
7995 			delete_local_mods = 1;
7996 			ignore_missing_paths = 1;
7997 			break;
7998 		case 'k':
7999 			keep_on_disk = 1;
8000 			break;
8001 		case 'R':
8002 			can_recurse = 1;
8003 			break;
8004 		case 's':
8005 			for (i = 0; i < strlen(optarg); i++) {
8006 				switch (optarg[i]) {
8007 				case GOT_STATUS_MODIFY:
8008 					delete_local_mods = 1;
8009 					break;
8010 				case GOT_STATUS_MISSING:
8011 					ignore_missing_paths = 1;
8012 					break;
8013 				default:
8014 					errx(1, "invalid status code '%c'",
8015 					    optarg[i]);
8016 				}
8017 			}
8018 			status_codes = optarg;
8019 			break;
8020 		default:
8021 			usage_remove();
8022 			/* NOTREACHED */
8023 		}
8024 	}
8025 
8026 	argc -= optind;
8027 	argv += optind;
8028 
8029 	if (argc < 1)
8030 		usage_remove();
8031 
8032 	cwd = getcwd(NULL, 0);
8033 	if (cwd == NULL) {
8034 		error = got_error_from_errno("getcwd");
8035 		goto done;
8036 	}
8037 
8038 	error = got_repo_pack_fds_open(&pack_fds);
8039 	if (error != NULL)
8040 		goto done;
8041 
8042 	error = got_worktree_open(&worktree, cwd);
8043 	if (error) {
8044 		if (error->code == GOT_ERR_NOT_WORKTREE)
8045 			error = wrap_not_worktree_error(error, "remove", cwd);
8046 		goto done;
8047 	}
8048 
8049 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
8050 	    NULL, pack_fds);
8051 	if (error)
8052 		goto done;
8053 
8054 	error = apply_unveil(got_repo_get_path(repo), 1,
8055 	    got_worktree_get_root_path(worktree));
8056 	if (error)
8057 		goto done;
8058 
8059 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
8060 	if (error)
8061 		goto done;
8062 
8063 	if (!can_recurse) {
8064 		char *ondisk_path;
8065 		struct stat sb;
8066 		TAILQ_FOREACH(pe, &paths, entry) {
8067 			if (asprintf(&ondisk_path, "%s/%s",
8068 			    got_worktree_get_root_path(worktree),
8069 			    pe->path) == -1) {
8070 				error = got_error_from_errno("asprintf");
8071 				goto done;
8072 			}
8073 			if (lstat(ondisk_path, &sb) == -1) {
8074 				if (errno == ENOENT) {
8075 					free(ondisk_path);
8076 					continue;
8077 				}
8078 				error = got_error_from_errno2("lstat",
8079 				    ondisk_path);
8080 				free(ondisk_path);
8081 				goto done;
8082 			}
8083 			free(ondisk_path);
8084 			if (S_ISDIR(sb.st_mode)) {
8085 				error = got_error_msg(GOT_ERR_BAD_PATH,
8086 				    "removing directories requires -R option");
8087 				goto done;
8088 			}
8089 		}
8090 	}
8091 
8092 	error = got_worktree_schedule_delete(worktree, &paths,
8093 	    delete_local_mods, status_codes, print_remove_status, NULL,
8094 	    repo, keep_on_disk, ignore_missing_paths);
8095 done:
8096 	if (repo) {
8097 		const struct got_error *close_err = got_repo_close(repo);
8098 		if (error == NULL)
8099 			error = close_err;
8100 	}
8101 	if (worktree)
8102 		got_worktree_close(worktree);
8103 	if (pack_fds) {
8104 		const struct got_error *pack_err =
8105 		    got_repo_pack_fds_close(pack_fds);
8106 		if (error == NULL)
8107 			error = pack_err;
8108 	}
8109 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_PATH);
8110 	free(cwd);
8111 	return error;
8112 }
8113 
8114 __dead static void
8115 usage_patch(void)
8116 {
8117 	fprintf(stderr, "usage: %s patch [-nR] [-c commit] [-p strip-count] "
8118 	    "[patchfile]\n", getprogname());
8119 	exit(1);
8120 }
8121 
8122 static const struct got_error *
8123 patch_from_stdin(int *patchfd)
8124 {
8125 	const struct got_error *err = NULL;
8126 	ssize_t r;
8127 	char buf[BUFSIZ];
8128 	sig_t sighup, sigint, sigquit;
8129 
8130 	*patchfd = got_opentempfd();
8131 	if (*patchfd == -1)
8132 		return got_error_from_errno("got_opentempfd");
8133 
8134 	sighup = signal(SIGHUP, SIG_DFL);
8135 	sigint = signal(SIGINT, SIG_DFL);
8136 	sigquit = signal(SIGQUIT, SIG_DFL);
8137 
8138 	for (;;) {
8139 		r = read(0, buf, sizeof(buf));
8140 		if (r == -1) {
8141 			err = got_error_from_errno("read");
8142 			break;
8143 		}
8144 		if (r == 0)
8145 			break;
8146 		if (write(*patchfd, buf, r) == -1) {
8147 			err = got_error_from_errno("write");
8148 			break;
8149 		}
8150 	}
8151 
8152 	signal(SIGHUP, sighup);
8153 	signal(SIGINT, sigint);
8154 	signal(SIGQUIT, sigquit);
8155 
8156 	if (err == NULL && lseek(*patchfd, 0, SEEK_SET) == -1)
8157 		err = got_error_from_errno("lseek");
8158 
8159 	if (err != NULL) {
8160 		close(*patchfd);
8161 		*patchfd = -1;
8162 	}
8163 
8164 	return err;
8165 }
8166 
8167 static const struct got_error *
8168 patch_progress(void *arg, const char *old, const char *new,
8169     unsigned char status, const struct got_error *error, int old_from,
8170     int old_lines, int new_from, int new_lines, int offset,
8171     int ws_mangled, const struct got_error *hunk_err)
8172 {
8173 	const char *path = new == NULL ? old : new;
8174 
8175 	while (*path == '/')
8176 		path++;
8177 
8178 	if (status != 0)
8179 		printf("%c  %s\n", status, path);
8180 
8181 	if (error != NULL)
8182 		fprintf(stderr, "%s: %s\n", getprogname(), error->msg);
8183 
8184 	if (offset != 0 || hunk_err != NULL || ws_mangled) {
8185 		printf("@@ -%d,%d +%d,%d @@ ", old_from,
8186 		    old_lines, new_from, new_lines);
8187 		if (hunk_err != NULL)
8188 			printf("%s\n", hunk_err->msg);
8189 		else if (offset != 0)
8190 			printf("applied with offset %d\n", offset);
8191 		else
8192 			printf("hunk contains mangled whitespace\n");
8193 	}
8194 
8195 	return NULL;
8196 }
8197 
8198 static const struct got_error *
8199 cmd_patch(int argc, char *argv[])
8200 {
8201 	const struct got_error *error = NULL, *close_error = NULL;
8202 	struct got_worktree *worktree = NULL;
8203 	struct got_repository *repo = NULL;
8204 	struct got_reflist_head refs;
8205 	struct got_object_id *commit_id = NULL;
8206 	const char *commit_id_str = NULL;
8207 	struct stat sb;
8208 	const char *errstr;
8209 	char *cwd = NULL;
8210 	int ch, nop = 0, strip = -1, reverse = 0;
8211 	int patchfd;
8212 	int *pack_fds = NULL;
8213 
8214 	TAILQ_INIT(&refs);
8215 
8216 #ifndef PROFILE
8217 	if (pledge("stdio rpath wpath cpath fattr proc exec sendfd flock "
8218 	    "unveil", NULL) == -1)
8219 		err(1, "pledge");
8220 #endif
8221 
8222 	while ((ch = getopt(argc, argv, "c:np:R")) != -1) {
8223 		switch (ch) {
8224 		case 'c':
8225 			commit_id_str = optarg;
8226 			break;
8227 		case 'n':
8228 			nop = 1;
8229 			break;
8230 		case 'p':
8231 			strip = strtonum(optarg, 0, INT_MAX, &errstr);
8232 			if (errstr != NULL)
8233 				errx(1, "pathname strip count is %s: %s",
8234 				     errstr, optarg);
8235 			break;
8236 		case 'R':
8237 			reverse = 1;
8238 			break;
8239 		default:
8240 			usage_patch();
8241 			/* NOTREACHED */
8242 		}
8243 	}
8244 
8245 	argc -= optind;
8246 	argv += optind;
8247 
8248 	if (argc == 0) {
8249 		error = patch_from_stdin(&patchfd);
8250 		if (error)
8251 			return error;
8252 	} else if (argc == 1) {
8253 		patchfd = open(argv[0], O_RDONLY);
8254 		if (patchfd == -1) {
8255 			error = got_error_from_errno2("open", argv[0]);
8256 			return error;
8257 		}
8258 		if (fstat(patchfd, &sb) == -1) {
8259 			error = got_error_from_errno2("fstat", argv[0]);
8260 			goto done;
8261 		}
8262 		if (!S_ISREG(sb.st_mode)) {
8263 			error = got_error_path(argv[0], GOT_ERR_BAD_FILETYPE);
8264 			goto done;
8265 		}
8266 	} else
8267 		usage_patch();
8268 
8269 	if ((cwd = getcwd(NULL, 0)) == NULL) {
8270 		error = got_error_from_errno("getcwd");
8271 		goto done;
8272 	}
8273 
8274 	error = got_repo_pack_fds_open(&pack_fds);
8275 	if (error != NULL)
8276 		goto done;
8277 
8278 	error = got_worktree_open(&worktree, cwd);
8279 	if (error != NULL)
8280 		goto done;
8281 
8282 	const char *repo_path = got_worktree_get_repo_path(worktree);
8283 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
8284 	if (error != NULL)
8285 		goto done;
8286 
8287 	error = apply_unveil(got_repo_get_path(repo), 0,
8288 	    got_worktree_get_root_path(worktree));
8289 	if (error != NULL)
8290 		goto done;
8291 
8292 	error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name, NULL);
8293 	if (error)
8294 		goto done;
8295 
8296 	if (commit_id_str != NULL) {
8297 		error = got_repo_match_object_id(&commit_id, NULL,
8298 		    commit_id_str, GOT_OBJ_TYPE_COMMIT, &refs, repo);
8299 		if (error)
8300 			goto done;
8301 	}
8302 
8303 	error = got_patch(patchfd, worktree, repo, nop, strip, reverse,
8304 	    commit_id, &patch_progress, NULL, check_cancelled, NULL);
8305 
8306 done:
8307 	got_ref_list_free(&refs);
8308 	free(commit_id);
8309 	if (repo) {
8310 		close_error = got_repo_close(repo);
8311 		if (error == NULL)
8312 			error = close_error;
8313 	}
8314 	if (worktree != NULL) {
8315 		close_error = got_worktree_close(worktree);
8316 		if (error == NULL)
8317 			error = close_error;
8318 	}
8319 	if (pack_fds) {
8320 		const struct got_error *pack_err =
8321 		    got_repo_pack_fds_close(pack_fds);
8322 		if (error == NULL)
8323 			error = pack_err;
8324 	}
8325 	free(cwd);
8326 	return error;
8327 }
8328 
8329 __dead static void
8330 usage_revert(void)
8331 {
8332 	fprintf(stderr, "usage: %s revert [-pR] [-F response-script] path ...\n",
8333 	    getprogname());
8334 	exit(1);
8335 }
8336 
8337 static const struct got_error *
8338 revert_progress(void *arg, unsigned char status, const char *path)
8339 {
8340 	if (status == GOT_STATUS_UNVERSIONED)
8341 		return NULL;
8342 
8343 	while (path[0] == '/')
8344 		path++;
8345 	printf("%c  %s\n", status, path);
8346 	return NULL;
8347 }
8348 
8349 struct choose_patch_arg {
8350 	FILE *patch_script_file;
8351 	const char *action;
8352 };
8353 
8354 static const struct got_error *
8355 show_change(unsigned char status, const char *path, FILE *patch_file, int n,
8356     int nchanges, const char *action)
8357 {
8358 	const struct got_error *err;
8359 	char *line = NULL;
8360 	size_t linesize = 0;
8361 	ssize_t linelen;
8362 
8363 	switch (status) {
8364 	case GOT_STATUS_ADD:
8365 		printf("A  %s\n%s this addition? [y/n] ", path, action);
8366 		break;
8367 	case GOT_STATUS_DELETE:
8368 		printf("D  %s\n%s this deletion? [y/n] ", path, action);
8369 		break;
8370 	case GOT_STATUS_MODIFY:
8371 		if (fseek(patch_file, 0L, SEEK_SET) == -1)
8372 			return got_error_from_errno("fseek");
8373 		printf(GOT_COMMIT_SEP_STR);
8374 		while ((linelen = getline(&line, &linesize, patch_file)) != -1)
8375 			printf("%s", line);
8376 		if (linelen == -1 && ferror(patch_file)) {
8377 			err = got_error_from_errno("getline");
8378 			free(line);
8379 			return err;
8380 		}
8381 		free(line);
8382 		printf(GOT_COMMIT_SEP_STR);
8383 		printf("M  %s (change %d of %d)\n%s this change? [y/n/q] ",
8384 		    path, n, nchanges, action);
8385 		break;
8386 	default:
8387 		return got_error_path(path, GOT_ERR_FILE_STATUS);
8388 	}
8389 
8390 	fflush(stdout);
8391 	return NULL;
8392 }
8393 
8394 static const struct got_error *
8395 choose_patch(int *choice, void *arg, unsigned char status, const char *path,
8396     FILE *patch_file, int n, int nchanges)
8397 {
8398 	const struct got_error *err = NULL;
8399 	char *line = NULL;
8400 	size_t linesize = 0;
8401 	ssize_t linelen;
8402 	int resp = ' ';
8403 	struct choose_patch_arg *a = arg;
8404 
8405 	*choice = GOT_PATCH_CHOICE_NONE;
8406 
8407 	if (a->patch_script_file) {
8408 		char *nl;
8409 		err = show_change(status, path, patch_file, n, nchanges,
8410 		    a->action);
8411 		if (err)
8412 			return err;
8413 		linelen = getline(&line, &linesize, a->patch_script_file);
8414 		if (linelen == -1) {
8415 			if (ferror(a->patch_script_file))
8416 				return got_error_from_errno("getline");
8417 			return NULL;
8418 		}
8419 		nl = strchr(line, '\n');
8420 		if (nl)
8421 			*nl = '\0';
8422 		if (strcmp(line, "y") == 0) {
8423 			*choice = GOT_PATCH_CHOICE_YES;
8424 			printf("y\n");
8425 		} else if (strcmp(line, "n") == 0) {
8426 			*choice = GOT_PATCH_CHOICE_NO;
8427 			printf("n\n");
8428 		} else if (strcmp(line, "q") == 0 &&
8429 		    status == GOT_STATUS_MODIFY) {
8430 			*choice = GOT_PATCH_CHOICE_QUIT;
8431 			printf("q\n");
8432 		} else
8433 			printf("invalid response '%s'\n", line);
8434 		free(line);
8435 		return NULL;
8436 	}
8437 
8438 	while (resp != 'y' && resp != 'n' && resp != 'q') {
8439 		err = show_change(status, path, patch_file, n, nchanges,
8440 		    a->action);
8441 		if (err)
8442 			return err;
8443 		resp = getchar();
8444 		if (resp == '\n')
8445 			resp = getchar();
8446 		if (status == GOT_STATUS_MODIFY) {
8447 			if (resp != 'y' && resp != 'n' && resp != 'q') {
8448 				printf("invalid response '%c'\n", resp);
8449 				resp = ' ';
8450 			}
8451 		} else if (resp != 'y' && resp != 'n') {
8452 				printf("invalid response '%c'\n", resp);
8453 				resp = ' ';
8454 		}
8455 	}
8456 
8457 	if (resp == 'y')
8458 		*choice = GOT_PATCH_CHOICE_YES;
8459 	else if (resp == 'n')
8460 		*choice = GOT_PATCH_CHOICE_NO;
8461 	else if (resp == 'q' && status == GOT_STATUS_MODIFY)
8462 		*choice = GOT_PATCH_CHOICE_QUIT;
8463 
8464 	return NULL;
8465 }
8466 
8467 struct wt_commitable_path_arg {
8468 	struct got_pathlist_head	*commit_paths;
8469 	int				*has_changes;
8470 };
8471 
8472 /*
8473  * Shortcut work tree status callback to determine if the set of paths scanned
8474  * has at least one versioned path that is being modified and, if not NULL, is
8475  * in the arg->commit_paths list.  Set arg and return GOT_ERR_FILE_MODIFIED as
8476  * soon as a path is passed with a status that satisfies this criteria.
8477  */
8478 static const struct got_error *
8479 worktree_has_commitable_path(void *arg, unsigned char status,
8480     unsigned char staged_status, const char *path,
8481     struct got_object_id *blob_id, struct got_object_id *staged_blob_id,
8482     struct got_object_id *commit_id, int dirfd, const char *de_name)
8483 {
8484 	struct wt_commitable_path_arg *a = arg;
8485 
8486 	if (status == staged_status && (status == GOT_STATUS_DELETE))
8487 		status = GOT_STATUS_NO_CHANGE;
8488 
8489 	if (!(status == GOT_STATUS_NO_CHANGE ||
8490 	    status == GOT_STATUS_UNVERSIONED) ||
8491 	    staged_status != GOT_STATUS_NO_CHANGE) {
8492 		if (a->commit_paths != NULL) {
8493 			struct got_pathlist_entry *pe;
8494 
8495 			TAILQ_FOREACH(pe, a->commit_paths, entry) {
8496 				if (strncmp(path, pe->path,
8497 				    pe->path_len) == 0) {
8498 					*a->has_changes = 1;
8499 					break;
8500 				}
8501 			}
8502 		} else
8503 			*a->has_changes = 1;
8504 
8505 		if (*a->has_changes)
8506 			return got_error(GOT_ERR_FILE_MODIFIED);
8507 	}
8508 
8509 	return NULL;
8510 }
8511 
8512 /*
8513  * Check that the changeset of the commit identified by id is
8514  * comprised of at least one modified path that is being committed.
8515  */
8516 static const struct got_error *
8517 commit_path_changed_in_worktree(struct wt_commitable_path_arg *wcpa,
8518     struct got_object_id *id, struct got_worktree *worktree,
8519     struct got_repository *repo)
8520 {
8521 	const struct got_error		*err;
8522 	struct got_pathlist_head	 paths;
8523 	struct got_commit_object	*commit = NULL, *pcommit = NULL;
8524 	struct got_tree_object		*tree = NULL, *ptree = NULL;
8525 	struct got_object_qid		*pid;
8526 
8527 	TAILQ_INIT(&paths);
8528 
8529 	err = got_object_open_as_commit(&commit, repo, id);
8530 	if (err)
8531 		goto done;
8532 
8533 	err = got_object_open_as_tree(&tree, repo,
8534 	    got_object_commit_get_tree_id(commit));
8535 	if (err)
8536 		goto done;
8537 
8538 	pid = STAILQ_FIRST(got_object_commit_get_parent_ids(commit));
8539 	if (pid != NULL) {
8540 		err = got_object_open_as_commit(&pcommit, repo, &pid->id);
8541 		if (err)
8542 			goto done;
8543 
8544 		err = got_object_open_as_tree(&ptree, repo,
8545 		    got_object_commit_get_tree_id(pcommit));
8546 		if (err)
8547 			goto done;
8548 	}
8549 
8550 	err = got_diff_tree(ptree, tree, NULL, NULL, -1, -1, "", "", repo,
8551 	    got_diff_tree_collect_changed_paths, &paths, 0);
8552 	if (err)
8553 		goto done;
8554 
8555 	err = got_worktree_status(worktree, &paths, repo, 0,
8556 	    worktree_has_commitable_path, wcpa, check_cancelled, NULL);
8557 	if (err && err->code == GOT_ERR_FILE_MODIFIED) {
8558 		/*
8559 		 * At least one changed path in the referenced commit is
8560 		 * modified in the work tree, that's all we need to know!
8561 		 */
8562 		err = NULL;
8563 	}
8564 
8565 done:
8566 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_ALL);
8567 	if (commit)
8568 		got_object_commit_close(commit);
8569 	if (pcommit)
8570 		got_object_commit_close(pcommit);
8571 	if (tree)
8572 		got_object_tree_close(tree);
8573 	if (ptree)
8574 		got_object_tree_close(ptree);
8575 	return err;
8576 }
8577 
8578 /*
8579  * Remove any "logmsg" reference comprised entirely of paths that have
8580  * been reverted in this work tree. If any path in the logmsg ref changeset
8581  * remains in a changed state in the worktree, do not remove the reference.
8582  */
8583 static const struct got_error *
8584 rm_logmsg_ref(struct got_worktree *worktree, struct got_repository *repo)
8585 {
8586 	const struct got_error		*err;
8587 	struct got_reflist_head		 refs;
8588 	struct got_reflist_entry	*re;
8589 	struct got_commit_object	*commit = NULL;
8590 	struct got_object_id		*commit_id = NULL;
8591 	struct wt_commitable_path_arg	 wcpa;
8592 	char				*uuidstr = NULL;
8593 
8594 	TAILQ_INIT(&refs);
8595 
8596 	err = got_worktree_get_uuid(&uuidstr, worktree);
8597 	if (err)
8598 		goto done;
8599 
8600 	err = got_ref_list(&refs, repo, "refs/got/worktree",
8601 	    got_ref_cmp_by_name, repo);
8602 	if (err)
8603 		goto done;
8604 
8605 	TAILQ_FOREACH(re, &refs, entry) {
8606 		const char	*refname;
8607 		int		 has_changes = 0;
8608 
8609 		refname = got_ref_get_name(re->ref);
8610 
8611 		if (!strncmp(refname, GOT_WORKTREE_CHERRYPICK_REF_PREFIX,
8612 		    GOT_WORKTREE_CHERRYPICK_REF_PREFIX_LEN))
8613 			refname += GOT_WORKTREE_CHERRYPICK_REF_PREFIX_LEN + 1;
8614 		else if (!strncmp(refname, GOT_WORKTREE_BACKOUT_REF_PREFIX,
8615 		    GOT_WORKTREE_BACKOUT_REF_PREFIX_LEN))
8616 			refname += GOT_WORKTREE_BACKOUT_REF_PREFIX_LEN + 1;
8617 		else
8618 			continue;
8619 
8620 		if (strncmp(refname, uuidstr, GOT_WORKTREE_UUID_STRLEN) == 0)
8621 			refname += GOT_WORKTREE_UUID_STRLEN + 1; /* skip '-' */
8622 		else
8623 			continue;
8624 
8625 		err = got_repo_match_object_id(&commit_id, NULL, refname,
8626 		    GOT_OBJ_TYPE_COMMIT, NULL, repo);
8627 		if (err)
8628 			goto done;
8629 
8630 		err = got_object_open_as_commit(&commit, repo, commit_id);
8631 		if (err)
8632 			goto done;
8633 
8634 		wcpa.commit_paths = NULL;
8635 		wcpa.has_changes = &has_changes;
8636 
8637 		err = commit_path_changed_in_worktree(&wcpa, commit_id,
8638 		    worktree, repo);
8639 		if (err)
8640 			goto done;
8641 
8642 		if (!has_changes) {
8643 			err = got_ref_delete(re->ref, repo);
8644 			if (err)
8645 				goto done;
8646 		}
8647 
8648 		got_object_commit_close(commit);
8649 		commit = NULL;
8650 		free(commit_id);
8651 		commit_id = NULL;
8652 	}
8653 
8654 done:
8655 	free(uuidstr);
8656 	free(commit_id);
8657 	got_ref_list_free(&refs);
8658 	if (commit)
8659 		got_object_commit_close(commit);
8660 	return err;
8661 }
8662 
8663 static const struct got_error *
8664 cmd_revert(int argc, char *argv[])
8665 {
8666 	const struct got_error *error = NULL;
8667 	struct got_worktree *worktree = NULL;
8668 	struct got_repository *repo = NULL;
8669 	char *cwd = NULL, *path = NULL;
8670 	struct got_pathlist_head paths;
8671 	struct got_pathlist_entry *pe;
8672 	int ch, can_recurse = 0, pflag = 0;
8673 	FILE *patch_script_file = NULL;
8674 	const char *patch_script_path = NULL;
8675 	struct choose_patch_arg cpa;
8676 	int *pack_fds = NULL;
8677 
8678 	TAILQ_INIT(&paths);
8679 
8680 #ifndef PROFILE
8681 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
8682 	    "unveil", NULL) == -1)
8683 		err(1, "pledge");
8684 #endif
8685 
8686 	while ((ch = getopt(argc, argv, "F:pR")) != -1) {
8687 		switch (ch) {
8688 		case 'F':
8689 			patch_script_path = optarg;
8690 			break;
8691 		case 'p':
8692 			pflag = 1;
8693 			break;
8694 		case 'R':
8695 			can_recurse = 1;
8696 			break;
8697 		default:
8698 			usage_revert();
8699 			/* NOTREACHED */
8700 		}
8701 	}
8702 
8703 	argc -= optind;
8704 	argv += optind;
8705 
8706 	if (argc < 1)
8707 		usage_revert();
8708 	if (patch_script_path && !pflag)
8709 		errx(1, "-F option can only be used together with -p option");
8710 
8711 	cwd = getcwd(NULL, 0);
8712 	if (cwd == NULL) {
8713 		error = got_error_from_errno("getcwd");
8714 		goto done;
8715 	}
8716 
8717 	error = got_repo_pack_fds_open(&pack_fds);
8718 	if (error != NULL)
8719 		goto done;
8720 
8721 	error = got_worktree_open(&worktree, cwd);
8722 	if (error) {
8723 		if (error->code == GOT_ERR_NOT_WORKTREE)
8724 			error = wrap_not_worktree_error(error, "revert", cwd);
8725 		goto done;
8726 	}
8727 
8728 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
8729 	    NULL, pack_fds);
8730 	if (error != NULL)
8731 		goto done;
8732 
8733 	if (patch_script_path) {
8734 		patch_script_file = fopen(patch_script_path, "re");
8735 		if (patch_script_file == NULL) {
8736 			error = got_error_from_errno2("fopen",
8737 			    patch_script_path);
8738 			goto done;
8739 		}
8740 	}
8741 
8742 	/*
8743 	 * XXX "c" perm needed on repo dir to delete merge references.
8744 	 */
8745 	error = apply_unveil(got_repo_get_path(repo), 0,
8746 	    got_worktree_get_root_path(worktree));
8747 	if (error)
8748 		goto done;
8749 
8750 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
8751 	if (error)
8752 		goto done;
8753 
8754 	if (!can_recurse) {
8755 		char *ondisk_path;
8756 		struct stat sb;
8757 		TAILQ_FOREACH(pe, &paths, entry) {
8758 			if (asprintf(&ondisk_path, "%s/%s",
8759 			    got_worktree_get_root_path(worktree),
8760 			    pe->path) == -1) {
8761 				error = got_error_from_errno("asprintf");
8762 				goto done;
8763 			}
8764 			if (lstat(ondisk_path, &sb) == -1) {
8765 				if (errno == ENOENT) {
8766 					free(ondisk_path);
8767 					continue;
8768 				}
8769 				error = got_error_from_errno2("lstat",
8770 				    ondisk_path);
8771 				free(ondisk_path);
8772 				goto done;
8773 			}
8774 			free(ondisk_path);
8775 			if (S_ISDIR(sb.st_mode)) {
8776 				error = got_error_msg(GOT_ERR_BAD_PATH,
8777 				    "reverting directories requires -R option");
8778 				goto done;
8779 			}
8780 		}
8781 	}
8782 
8783 	cpa.patch_script_file = patch_script_file;
8784 	cpa.action = "revert";
8785 	error = got_worktree_revert(worktree, &paths, revert_progress, NULL,
8786 	    pflag ? choose_patch : NULL, &cpa, repo);
8787 
8788 	error = rm_logmsg_ref(worktree, repo);
8789 done:
8790 	if (patch_script_file && fclose(patch_script_file) == EOF &&
8791 	    error == NULL)
8792 		error = got_error_from_errno2("fclose", patch_script_path);
8793 	if (repo) {
8794 		const struct got_error *close_err = got_repo_close(repo);
8795 		if (error == NULL)
8796 			error = close_err;
8797 	}
8798 	if (worktree)
8799 		got_worktree_close(worktree);
8800 	if (pack_fds) {
8801 		const struct got_error *pack_err =
8802 		    got_repo_pack_fds_close(pack_fds);
8803 		if (error == NULL)
8804 			error = pack_err;
8805 	}
8806 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_PATH);
8807 	free(path);
8808 	free(cwd);
8809 	return error;
8810 }
8811 
8812 __dead static void
8813 usage_commit(void)
8814 {
8815 	fprintf(stderr, "usage: %s commit [-CNnS] [-A author] [-F path] "
8816 	    "[-m message] [path ...]\n", getprogname());
8817 	exit(1);
8818 }
8819 
8820 struct collect_commit_logmsg_arg {
8821 	const char *cmdline_log;
8822 	const char *prepared_log;
8823 	const char *merged_log;
8824 	int non_interactive;
8825 	const char *editor;
8826 	const char *worktree_path;
8827 	const char *branch_name;
8828 	const char *repo_path;
8829 	char *logmsg_path;
8830 
8831 };
8832 
8833 static const struct got_error *
8834 read_prepared_logmsg(char **logmsg, const char *path)
8835 {
8836 	const struct got_error *err = NULL;
8837 	FILE *f = NULL;
8838 	struct stat sb;
8839 	size_t r;
8840 
8841 	*logmsg = NULL;
8842 	memset(&sb, 0, sizeof(sb));
8843 
8844 	f = fopen(path, "re");
8845 	if (f == NULL)
8846 		return got_error_from_errno2("fopen", path);
8847 
8848 	if (fstat(fileno(f), &sb) == -1) {
8849 		err = got_error_from_errno2("fstat", path);
8850 		goto done;
8851 	}
8852 	if (sb.st_size == 0) {
8853 		err = got_error(GOT_ERR_COMMIT_MSG_EMPTY);
8854 		goto done;
8855 	}
8856 
8857 	*logmsg = malloc(sb.st_size + 1);
8858 	if (*logmsg == NULL) {
8859 		err = got_error_from_errno("malloc");
8860 		goto done;
8861 	}
8862 
8863 	r = fread(*logmsg, 1, sb.st_size, f);
8864 	if (r != sb.st_size) {
8865 		if (ferror(f))
8866 			err = got_error_from_errno2("fread", path);
8867 		else
8868 			err = got_error(GOT_ERR_IO);
8869 		goto done;
8870 	}
8871 	(*logmsg)[sb.st_size] = '\0';
8872 done:
8873 	if (fclose(f) == EOF && err == NULL)
8874 		err = got_error_from_errno2("fclose", path);
8875 	if (err) {
8876 		free(*logmsg);
8877 		*logmsg = NULL;
8878 	}
8879 	return err;
8880 }
8881 
8882 static const struct got_error *
8883 collect_commit_logmsg(struct got_pathlist_head *commitable_paths,
8884     const char *diff_path, char **logmsg, void *arg)
8885 {
8886 	char *initial_content = NULL;
8887 	struct got_pathlist_entry *pe;
8888 	const struct got_error *err = NULL;
8889 	char *template = NULL;
8890 	char *prepared_msg = NULL, *merged_msg = NULL;
8891 	struct collect_commit_logmsg_arg *a = arg;
8892 	int initial_content_len;
8893 	int fd = -1;
8894 	size_t len;
8895 
8896 	/* if a message was specified on the command line, just use it */
8897 	if (a->cmdline_log != NULL && strlen(a->cmdline_log) != 0) {
8898 		len = strlen(a->cmdline_log) + 1;
8899 		*logmsg = malloc(len + 1);
8900 		if (*logmsg == NULL)
8901 			return got_error_from_errno("malloc");
8902 		strlcpy(*logmsg, a->cmdline_log, len);
8903 		return NULL;
8904 	} else if (a->prepared_log != NULL && a->non_interactive)
8905 		return read_prepared_logmsg(logmsg, a->prepared_log);
8906 
8907 	if (asprintf(&template, "%s/logmsg", a->worktree_path) == -1)
8908 		return got_error_from_errno("asprintf");
8909 
8910 	err = got_opentemp_named_fd(&a->logmsg_path, &fd, template, "");
8911 	if (err)
8912 		goto done;
8913 
8914 	if (a->prepared_log) {
8915 		err = read_prepared_logmsg(&prepared_msg, a->prepared_log);
8916 		if (err)
8917 			goto done;
8918 	} else if (a->merged_log) {
8919 		err = read_prepared_logmsg(&merged_msg, a->merged_log);
8920 		if (err)
8921 			goto done;
8922 	}
8923 
8924 	initial_content_len = asprintf(&initial_content,
8925 	    "%s%s\n# changes to be committed on branch %s:\n",
8926 	    prepared_msg ? prepared_msg : "",
8927 	    merged_msg ? merged_msg : "", a->branch_name);
8928 	if (initial_content_len == -1) {
8929 		err = got_error_from_errno("asprintf");
8930 		goto done;
8931 	}
8932 
8933 	if (write(fd, initial_content, initial_content_len) == -1) {
8934 		err = got_error_from_errno2("write", a->logmsg_path);
8935 		goto done;
8936 	}
8937 
8938 	TAILQ_FOREACH(pe, commitable_paths, entry) {
8939 		struct got_commitable *ct = pe->data;
8940 		dprintf(fd, "#  %c  %s\n",
8941 		    got_commitable_get_status(ct),
8942 		    got_commitable_get_path(ct));
8943 	}
8944 
8945 	if (diff_path) {
8946 		dprintf(fd, "# detailed changes can be viewed in %s\n",
8947 		    diff_path);
8948 	}
8949 
8950 	if (close(fd) == -1) {
8951 		err = got_error_from_errno2("close", a->logmsg_path);
8952 		goto done;
8953 	}
8954 	fd = -1;
8955 
8956 	err = edit_logmsg(logmsg, a->editor, a->logmsg_path, initial_content,
8957 	    initial_content_len, a->prepared_log ? 0 : 1);
8958 done:
8959 	free(initial_content);
8960 	free(template);
8961 	free(prepared_msg);
8962 	free(merged_msg);
8963 
8964 	if (fd != -1 && close(fd) == -1 && err == NULL)
8965 		err = got_error_from_errno2("close", a->logmsg_path);
8966 
8967 	/* Editor is done; we can now apply unveil(2) */
8968 	if (err == NULL)
8969 		err = apply_unveil(a->repo_path, 0, a->worktree_path);
8970 	if (err) {
8971 		free(*logmsg);
8972 		*logmsg = NULL;
8973 	}
8974 	return err;
8975 }
8976 
8977 static const struct got_error *
8978 cat_logmsg(FILE *f, struct got_commit_object *commit, const char *idstr,
8979     const char *type, int has_content)
8980 {
8981 	const struct got_error	*err = NULL;
8982 	char			*logmsg = NULL;
8983 
8984 	err = got_object_commit_get_logmsg(&logmsg, commit);
8985 	if (err)
8986 		return err;
8987 
8988 	if (fprintf(f, "%s# log message of %s commit %s:%s",
8989 	    has_content ? "\n" : "", type, idstr, logmsg) < 0)
8990 		err = got_ferror(f, GOT_ERR_IO);
8991 
8992 	free(logmsg);
8993 	return err;
8994 }
8995 
8996 /*
8997  * Lookup "logmsg" references of backed-out and cherrypicked commits
8998  * belonging to the current work tree. If found, and the worktree has
8999  * at least one modified file that was changed in the referenced commit,
9000  * add its log message to a new temporary file at *logmsg_path.
9001  * Add all refs found to matched_refs to be scheduled for removal on
9002  * successful commit.
9003  */
9004 static const struct got_error *
9005 lookup_logmsg_ref(char **logmsg_path, struct got_pathlist_head *paths,
9006     struct got_reflist_head *matched_refs, struct got_worktree *worktree,
9007     struct got_repository *repo)
9008 {
9009 	const struct got_error		*err;
9010 	struct got_commit_object	*commit = NULL;
9011 	struct got_object_id		*id = NULL;
9012 	struct got_reflist_head		 refs;
9013 	struct got_reflist_entry	*re, *re_match;
9014 	FILE				*f = NULL;
9015 	char				*uuidstr = NULL;
9016 	int				 added_logmsg = 0;
9017 
9018 	TAILQ_INIT(&refs);
9019 
9020 	*logmsg_path = NULL;
9021 
9022 	err = got_worktree_get_uuid(&uuidstr, worktree);
9023 	if (err)
9024 		goto done;
9025 
9026 	err = got_ref_list(&refs, repo, "refs/got/worktree",
9027 	    got_ref_cmp_by_name, repo);
9028 	if (err)
9029 		goto done;
9030 
9031 	TAILQ_FOREACH(re, &refs, entry) {
9032 		const char			*refname, *type;
9033 		struct wt_commitable_path_arg	 wcpa;
9034 		int				 add_logmsg = 0;
9035 
9036 		refname = got_ref_get_name(re->ref);
9037 
9038 		if (strncmp(refname, GOT_WORKTREE_CHERRYPICK_REF_PREFIX,
9039 		    GOT_WORKTREE_CHERRYPICK_REF_PREFIX_LEN) == 0) {
9040 			refname += GOT_WORKTREE_CHERRYPICK_REF_PREFIX_LEN + 1;
9041 			type = "cherrypicked";
9042 		} else if (strncmp(refname, GOT_WORKTREE_BACKOUT_REF_PREFIX,
9043 		    GOT_WORKTREE_BACKOUT_REF_PREFIX_LEN) == 0) {
9044 			refname += GOT_WORKTREE_BACKOUT_REF_PREFIX_LEN + 1;
9045 			type = "backed-out";
9046 		} else
9047 			continue;
9048 
9049 		if (strncmp(refname, uuidstr, GOT_WORKTREE_UUID_STRLEN) == 0)
9050 			refname += GOT_WORKTREE_UUID_STRLEN + 1; /* skip '-' */
9051 		else
9052 			continue;
9053 
9054 		err = got_repo_match_object_id(&id, NULL, refname,
9055 		    GOT_OBJ_TYPE_COMMIT, NULL, repo);
9056 		if (err)
9057 			goto done;
9058 
9059 		err = got_object_open_as_commit(&commit, repo, id);
9060 		if (err)
9061 			goto done;
9062 
9063 		wcpa.commit_paths = paths;
9064 		wcpa.has_changes = &add_logmsg;
9065 
9066 		err = commit_path_changed_in_worktree(&wcpa, id,
9067 		    worktree, repo);
9068 		if (err)
9069 			goto done;
9070 
9071 		if (add_logmsg) {
9072 			if (f == NULL) {
9073 				err = got_opentemp_named(logmsg_path, &f,
9074 				    "got-commit-logmsg", "");
9075 				if (err)
9076 					goto done;
9077 			}
9078 			err = cat_logmsg(f, commit, refname, type,
9079 			    added_logmsg);
9080 			if (err)
9081 				goto done;
9082 			if (!added_logmsg)
9083 				++added_logmsg;
9084 
9085 			err = got_reflist_entry_dup(&re_match, re);
9086 			if (err)
9087 				goto done;
9088 			TAILQ_INSERT_HEAD(matched_refs, re_match, entry);
9089 		}
9090 
9091 		got_object_commit_close(commit);
9092 		commit = NULL;
9093 		free(id);
9094 		id = NULL;
9095 	}
9096 
9097 done:
9098 	free(id);
9099 	free(uuidstr);
9100 	got_ref_list_free(&refs);
9101 	if (commit)
9102 		got_object_commit_close(commit);
9103 	if (f && fclose(f) == EOF && err == NULL)
9104 		err = got_error_from_errno("fclose");
9105 	if (!added_logmsg) {
9106 		if (*logmsg_path && unlink(*logmsg_path) != 0 && err == NULL)
9107 			err = got_error_from_errno2("unlink", *logmsg_path);
9108 		*logmsg_path = NULL;
9109 	}
9110 	return err;
9111 }
9112 
9113 static const struct got_error *
9114 cmd_commit(int argc, char *argv[])
9115 {
9116 	const struct got_error *error = NULL;
9117 	struct got_worktree *worktree = NULL;
9118 	struct got_repository *repo = NULL;
9119 	char *cwd = NULL, *id_str = NULL;
9120 	struct got_object_id *id = NULL;
9121 	const char *logmsg = NULL;
9122 	char *prepared_logmsg = NULL, *merged_logmsg = NULL;
9123 	struct collect_commit_logmsg_arg cl_arg;
9124 	const char *author = NULL;
9125 	char *gitconfig_path = NULL, *editor = NULL, *committer = NULL;
9126 	int ch, rebase_in_progress, histedit_in_progress, preserve_logmsg = 0;
9127 	int allow_bad_symlinks = 0, non_interactive = 0, merge_in_progress = 0;
9128 	int show_diff = 1, commit_conflicts = 0;
9129 	struct got_pathlist_head paths;
9130 	struct got_reflist_head refs;
9131 	struct got_reflist_entry *re;
9132 	int *pack_fds = NULL;
9133 
9134 	TAILQ_INIT(&refs);
9135 	TAILQ_INIT(&paths);
9136 	cl_arg.logmsg_path = NULL;
9137 
9138 #ifndef PROFILE
9139 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
9140 	    "unveil", NULL) == -1)
9141 		err(1, "pledge");
9142 #endif
9143 
9144 	while ((ch = getopt(argc, argv, "A:CF:m:NnS")) != -1) {
9145 		switch (ch) {
9146 		case 'A':
9147 			author = optarg;
9148 			error = valid_author(author);
9149 			if (error)
9150 				return error;
9151 			break;
9152 		case 'C':
9153 			commit_conflicts = 1;
9154 			break;
9155 		case 'F':
9156 			if (logmsg != NULL)
9157 				option_conflict('F', 'm');
9158 			prepared_logmsg = realpath(optarg, NULL);
9159 			if (prepared_logmsg == NULL)
9160 				return got_error_from_errno2("realpath",
9161 				    optarg);
9162 			break;
9163 		case 'm':
9164 			if (prepared_logmsg)
9165 				option_conflict('m', 'F');
9166 			logmsg = optarg;
9167 			break;
9168 		case 'N':
9169 			non_interactive = 1;
9170 			break;
9171 		case 'n':
9172 			show_diff = 0;
9173 			break;
9174 		case 'S':
9175 			allow_bad_symlinks = 1;
9176 			break;
9177 		default:
9178 			usage_commit();
9179 			/* NOTREACHED */
9180 		}
9181 	}
9182 
9183 	argc -= optind;
9184 	argv += optind;
9185 
9186 	cwd = getcwd(NULL, 0);
9187 	if (cwd == NULL) {
9188 		error = got_error_from_errno("getcwd");
9189 		goto done;
9190 	}
9191 
9192 	error = got_repo_pack_fds_open(&pack_fds);
9193 	if (error != NULL)
9194 		goto done;
9195 
9196 	error = got_worktree_open(&worktree, cwd);
9197 	if (error) {
9198 		if (error->code == GOT_ERR_NOT_WORKTREE)
9199 			error = wrap_not_worktree_error(error, "commit", cwd);
9200 		goto done;
9201 	}
9202 
9203 	error = got_worktree_rebase_in_progress(&rebase_in_progress, worktree);
9204 	if (error)
9205 		goto done;
9206 	if (rebase_in_progress) {
9207 		error = got_error(GOT_ERR_REBASING);
9208 		goto done;
9209 	}
9210 
9211 	error = got_worktree_histedit_in_progress(&histedit_in_progress,
9212 	    worktree);
9213 	if (error)
9214 		goto done;
9215 
9216 	error = get_gitconfig_path(&gitconfig_path);
9217 	if (error)
9218 		goto done;
9219 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
9220 	    gitconfig_path, pack_fds);
9221 	if (error != NULL)
9222 		goto done;
9223 
9224 	error = got_worktree_merge_in_progress(&merge_in_progress, worktree, repo);
9225 	if (error)
9226 		goto done;
9227 	if (merge_in_progress) {
9228 		error = got_error(GOT_ERR_MERGE_BUSY);
9229 		goto done;
9230 	}
9231 
9232 	error = get_author(&committer, repo, worktree);
9233 	if (error)
9234 		goto done;
9235 
9236 	if (author == NULL)
9237 		author = committer;
9238 
9239 	/*
9240 	 * unveil(2) traverses exec(2); if an editor is used we have
9241 	 * to apply unveil after the log message has been written.
9242 	 */
9243 	if (logmsg == NULL || strlen(logmsg) == 0)
9244 		error = get_editor(&editor);
9245 	else
9246 		error = apply_unveil(got_repo_get_path(repo), 0,
9247 		    got_worktree_get_root_path(worktree));
9248 	if (error)
9249 		goto done;
9250 
9251 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
9252 	if (error)
9253 		goto done;
9254 
9255 	if (prepared_logmsg == NULL) {
9256 		error = lookup_logmsg_ref(&merged_logmsg,
9257 		    argc > 0 ? &paths : NULL, &refs, worktree, repo);
9258 		if (error)
9259 			goto done;
9260 	}
9261 
9262 	cl_arg.editor = editor;
9263 	cl_arg.cmdline_log = logmsg;
9264 	cl_arg.prepared_log = prepared_logmsg;
9265 	cl_arg.merged_log = merged_logmsg;
9266 	cl_arg.non_interactive = non_interactive;
9267 	cl_arg.worktree_path = got_worktree_get_root_path(worktree);
9268 	cl_arg.branch_name = got_worktree_get_head_ref_name(worktree);
9269 	if (!histedit_in_progress) {
9270 		if (strncmp(cl_arg.branch_name, "refs/heads/", 11) != 0) {
9271 			error = got_error(GOT_ERR_COMMIT_BRANCH);
9272 			goto done;
9273 		}
9274 		cl_arg.branch_name += 11;
9275 	}
9276 	cl_arg.repo_path = got_repo_get_path(repo);
9277 	error = got_worktree_commit(&id, worktree, &paths, author, committer,
9278 	    allow_bad_symlinks, show_diff, commit_conflicts,
9279 	    collect_commit_logmsg, &cl_arg, print_status, NULL, repo);
9280 	if (error) {
9281 		if (error->code != GOT_ERR_COMMIT_MSG_EMPTY &&
9282 		    cl_arg.logmsg_path != NULL)
9283 			preserve_logmsg = 1;
9284 		goto done;
9285 	}
9286 
9287 	error = got_object_id_str(&id_str, id);
9288 	if (error)
9289 		goto done;
9290 	printf("Created commit %s\n", id_str);
9291 
9292 	TAILQ_FOREACH(re, &refs, entry) {
9293 		error = got_ref_delete(re->ref, repo);
9294 		if (error)
9295 			goto done;
9296 	}
9297 
9298 done:
9299 	if (preserve_logmsg) {
9300 		fprintf(stderr, "%s: log message preserved in %s\n",
9301 		    getprogname(), cl_arg.logmsg_path);
9302 	} else if (cl_arg.logmsg_path && unlink(cl_arg.logmsg_path) == -1 &&
9303 	    error == NULL)
9304 		error = got_error_from_errno2("unlink", cl_arg.logmsg_path);
9305 	free(cl_arg.logmsg_path);
9306 	if (merged_logmsg && unlink(merged_logmsg) == -1 && error == NULL)
9307 		error = got_error_from_errno2("unlink", merged_logmsg);
9308 	free(merged_logmsg);
9309 	if (repo) {
9310 		const struct got_error *close_err = got_repo_close(repo);
9311 		if (error == NULL)
9312 			error = close_err;
9313 	}
9314 	if (worktree)
9315 		got_worktree_close(worktree);
9316 	if (pack_fds) {
9317 		const struct got_error *pack_err =
9318 		    got_repo_pack_fds_close(pack_fds);
9319 		if (error == NULL)
9320 			error = pack_err;
9321 	}
9322 	got_ref_list_free(&refs);
9323 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_PATH);
9324 	free(cwd);
9325 	free(id_str);
9326 	free(gitconfig_path);
9327 	free(editor);
9328 	free(committer);
9329 	free(prepared_logmsg);
9330 	return error;
9331 }
9332 
9333 __dead static void
9334 usage_send(void)
9335 {
9336 	fprintf(stderr, "usage: %s send [-afqTv] [-b branch] [-d branch] "
9337 	    "[-r repository-path] [-t tag] [remote-repository]\n",
9338 	    getprogname());
9339 	exit(1);
9340 }
9341 
9342 static void
9343 print_load_info(int print_colored, int print_found, int print_trees,
9344     int ncolored, int nfound, int ntrees)
9345 {
9346 	if (print_colored) {
9347 		printf("%d commit%s colored", ncolored,
9348 		    ncolored == 1 ? "" : "s");
9349 	}
9350 	if (print_found) {
9351 		printf("%s%d object%s found",
9352 		    ncolored > 0 ? "; " : "",
9353 		    nfound, nfound == 1 ? "" : "s");
9354 	}
9355 	if (print_trees) {
9356 		printf("; %d tree%s scanned", ntrees,
9357 		    ntrees == 1 ? "" : "s");
9358 	}
9359 }
9360 
9361 struct got_send_progress_arg {
9362 	char last_scaled_packsize[FMT_SCALED_STRSIZE];
9363 	int verbosity;
9364 	int last_ncolored;
9365 	int last_nfound;
9366 	int last_ntrees;
9367 	int loading_done;
9368 	int last_ncommits;
9369 	int last_nobj_total;
9370 	int last_p_deltify;
9371 	int last_p_written;
9372 	int last_p_sent;
9373 	int printed_something;
9374 	int sent_something;
9375 	struct got_pathlist_head *delete_branches;
9376 };
9377 
9378 static const struct got_error *
9379 send_progress(void *arg, int ncolored, int nfound, int ntrees,
9380     off_t packfile_size, int ncommits, int nobj_total, int nobj_deltify,
9381     int nobj_written, off_t bytes_sent, const char *refname,
9382     const char *errmsg, int success)
9383 {
9384 	struct got_send_progress_arg *a = arg;
9385 	char scaled_packsize[FMT_SCALED_STRSIZE];
9386 	char scaled_sent[FMT_SCALED_STRSIZE];
9387 	int p_deltify = 0, p_written = 0, p_sent = 0;
9388 	int print_colored = 0, print_found = 0, print_trees = 0;
9389 	int print_searching = 0, print_total = 0;
9390 	int print_deltify = 0, print_written = 0, print_sent = 0;
9391 
9392 	if (a->verbosity < 0)
9393 		return NULL;
9394 
9395 	if (refname) {
9396 		const char *status = success ? "accepted" : "rejected";
9397 
9398 		if (success) {
9399 			struct got_pathlist_entry *pe;
9400 			TAILQ_FOREACH(pe, a->delete_branches, entry) {
9401 				const char *branchname = pe->path;
9402 				if (got_path_cmp(branchname, refname,
9403 				    strlen(branchname), strlen(refname)) == 0) {
9404 					status = "deleted";
9405 					a->sent_something = 1;
9406 					break;
9407 				}
9408 			}
9409 		}
9410 
9411 		if (a->printed_something)
9412 			putchar('\n');
9413 		printf("Server has %s %s", status, refname);
9414 		if (errmsg)
9415 			printf(": %s", errmsg);
9416 		a->printed_something = 1;
9417 		return NULL;
9418 	}
9419 
9420 	if (a->last_ncolored != ncolored) {
9421 		print_colored = 1;
9422 		a->last_ncolored = ncolored;
9423 	}
9424 
9425 	if (a->last_nfound != nfound) {
9426 		print_colored = 1;
9427 		print_found = 1;
9428 		a->last_nfound = nfound;
9429 	}
9430 
9431 	if (a->last_ntrees != ntrees) {
9432 		print_colored = 1;
9433 		print_found = 1;
9434 		print_trees = 1;
9435 		a->last_ntrees = ntrees;
9436 	}
9437 
9438 	if ((print_colored || print_found || print_trees) &&
9439 	    !a->loading_done) {
9440 		printf("\r");
9441 		print_load_info(print_colored, print_found, print_trees,
9442 		    ncolored, nfound, ntrees);
9443 		a->printed_something = 1;
9444 		fflush(stdout);
9445 		return NULL;
9446 	} else if (!a->loading_done) {
9447 		printf("\r");
9448 		print_load_info(1, 1, 1, ncolored, nfound, ntrees);
9449 		printf("\n");
9450 		a->loading_done = 1;
9451 	}
9452 
9453 	if (fmt_scaled(packfile_size, scaled_packsize) == -1)
9454 		return got_error_from_errno("fmt_scaled");
9455 	if (fmt_scaled(bytes_sent, scaled_sent) == -1)
9456 		return got_error_from_errno("fmt_scaled");
9457 
9458 	if (a->last_ncommits != ncommits) {
9459 		print_searching = 1;
9460 		a->last_ncommits = ncommits;
9461 	}
9462 
9463 	if (a->last_nobj_total != nobj_total) {
9464 		print_searching = 1;
9465 		print_total = 1;
9466 		a->last_nobj_total = nobj_total;
9467 	}
9468 
9469 	if (packfile_size > 0 && (a->last_scaled_packsize[0] == '\0' ||
9470 	    strcmp(scaled_packsize, a->last_scaled_packsize)) != 0) {
9471 		if (strlcpy(a->last_scaled_packsize, scaled_packsize,
9472 		    FMT_SCALED_STRSIZE) >= FMT_SCALED_STRSIZE)
9473 			return got_error(GOT_ERR_NO_SPACE);
9474 	}
9475 
9476 	if (nobj_deltify > 0 || nobj_written > 0) {
9477 		if (nobj_deltify > 0) {
9478 			p_deltify = (nobj_deltify * 100) / nobj_total;
9479 			if (p_deltify != a->last_p_deltify) {
9480 				a->last_p_deltify = p_deltify;
9481 				print_searching = 1;
9482 				print_total = 1;
9483 				print_deltify = 1;
9484 			}
9485 		}
9486 		if (nobj_written > 0) {
9487 			p_written = (nobj_written * 100) / nobj_total;
9488 			if (p_written != a->last_p_written) {
9489 				a->last_p_written = p_written;
9490 				print_searching = 1;
9491 				print_total = 1;
9492 				print_deltify = 1;
9493 				print_written = 1;
9494 			}
9495 		}
9496 	}
9497 
9498 	if (bytes_sent > 0) {
9499 		p_sent = (bytes_sent * 100) / packfile_size;
9500 		if (p_sent != a->last_p_sent) {
9501 			a->last_p_sent = p_sent;
9502 			print_searching = 1;
9503 			print_total = 1;
9504 			print_deltify = 1;
9505 			print_written = 1;
9506 			print_sent = 1;
9507 		}
9508 		a->sent_something = 1;
9509 	}
9510 
9511 	if (print_searching || print_total || print_deltify || print_written ||
9512 	    print_sent)
9513 		printf("\r");
9514 	if (print_searching)
9515 		printf("packing %d reference%s", ncommits,
9516 		    ncommits == 1 ? "" : "s");
9517 	if (print_total)
9518 		printf("; %d object%s", nobj_total,
9519 		    nobj_total == 1 ? "" : "s");
9520 	if (print_deltify)
9521 		printf("; deltify: %d%%", p_deltify);
9522 	if (print_sent)
9523 		printf("; uploading pack: %*s %d%%", FMT_SCALED_STRSIZE - 2,
9524 		    scaled_packsize, p_sent);
9525 	else if (print_written)
9526 		printf("; writing pack: %*s %d%%", FMT_SCALED_STRSIZE - 2,
9527 		    scaled_packsize, p_written);
9528 	if (print_searching || print_total || print_deltify ||
9529 	    print_written || print_sent) {
9530 		a->printed_something = 1;
9531 		fflush(stdout);
9532 	}
9533 	return NULL;
9534 }
9535 
9536 static const struct got_error *
9537 cmd_send(int argc, char *argv[])
9538 {
9539 	const struct got_error *error = NULL;
9540 	char *cwd = NULL, *repo_path = NULL;
9541 	const char *remote_name;
9542 	char *proto = NULL, *host = NULL, *port = NULL;
9543 	char *repo_name = NULL, *server_path = NULL;
9544 	const struct got_remote_repo *remotes, *remote = NULL;
9545 	int nremotes, nbranches = 0, ndelete_branches = 0;
9546 	struct got_repository *repo = NULL;
9547 	struct got_worktree *worktree = NULL;
9548 	const struct got_gotconfig *repo_conf = NULL, *worktree_conf = NULL;
9549 	struct got_pathlist_head branches;
9550 	struct got_pathlist_head tags;
9551 	struct got_reflist_head all_branches;
9552 	struct got_reflist_head all_tags;
9553 	struct got_pathlist_head delete_args;
9554 	struct got_pathlist_head delete_branches;
9555 	struct got_reflist_entry *re;
9556 	struct got_pathlist_entry *pe;
9557 	int i, ch, sendfd = -1, sendstatus;
9558 	pid_t sendpid = -1;
9559 	struct got_send_progress_arg spa;
9560 	int verbosity = 0, overwrite_refs = 0;
9561 	int send_all_branches = 0, send_all_tags = 0;
9562 	struct got_reference *ref = NULL;
9563 	int *pack_fds = NULL;
9564 
9565 	TAILQ_INIT(&branches);
9566 	TAILQ_INIT(&tags);
9567 	TAILQ_INIT(&all_branches);
9568 	TAILQ_INIT(&all_tags);
9569 	TAILQ_INIT(&delete_args);
9570 	TAILQ_INIT(&delete_branches);
9571 
9572 	while ((ch = getopt(argc, argv, "ab:d:fqr:Tt:v")) != -1) {
9573 		switch (ch) {
9574 		case 'a':
9575 			send_all_branches = 1;
9576 			break;
9577 		case 'b':
9578 			error = got_pathlist_append(&branches, optarg, NULL);
9579 			if (error)
9580 				return error;
9581 			nbranches++;
9582 			break;
9583 		case 'd':
9584 			error = got_pathlist_append(&delete_args, optarg, NULL);
9585 			if (error)
9586 				return error;
9587 			break;
9588 		case 'f':
9589 			overwrite_refs = 1;
9590 			break;
9591 		case 'q':
9592 			verbosity = -1;
9593 			break;
9594 		case 'r':
9595 			repo_path = realpath(optarg, NULL);
9596 			if (repo_path == NULL)
9597 				return got_error_from_errno2("realpath",
9598 				    optarg);
9599 			got_path_strip_trailing_slashes(repo_path);
9600 			break;
9601 		case 'T':
9602 			send_all_tags = 1;
9603 			break;
9604 		case 't':
9605 			error = got_pathlist_append(&tags, optarg, NULL);
9606 			if (error)
9607 				return error;
9608 			break;
9609 		case 'v':
9610 			if (verbosity < 0)
9611 				verbosity = 0;
9612 			else if (verbosity < 3)
9613 				verbosity++;
9614 			break;
9615 		default:
9616 			usage_send();
9617 			/* NOTREACHED */
9618 		}
9619 	}
9620 	argc -= optind;
9621 	argv += optind;
9622 
9623 	if (send_all_branches && !TAILQ_EMPTY(&branches))
9624 		option_conflict('a', 'b');
9625 	if (send_all_tags && !TAILQ_EMPTY(&tags))
9626 		option_conflict('T', 't');
9627 
9628 
9629 	if (argc == 0)
9630 		remote_name = GOT_SEND_DEFAULT_REMOTE_NAME;
9631 	else if (argc == 1)
9632 		remote_name = argv[0];
9633 	else
9634 		usage_send();
9635 
9636 	cwd = getcwd(NULL, 0);
9637 	if (cwd == NULL) {
9638 		error = got_error_from_errno("getcwd");
9639 		goto done;
9640 	}
9641 
9642 	error = got_repo_pack_fds_open(&pack_fds);
9643 	if (error != NULL)
9644 		goto done;
9645 
9646 	if (repo_path == NULL) {
9647 		error = got_worktree_open(&worktree, cwd);
9648 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
9649 			goto done;
9650 		else
9651 			error = NULL;
9652 		if (worktree) {
9653 			repo_path =
9654 			    strdup(got_worktree_get_repo_path(worktree));
9655 			if (repo_path == NULL)
9656 				error = got_error_from_errno("strdup");
9657 			if (error)
9658 				goto done;
9659 		} else {
9660 			repo_path = strdup(cwd);
9661 			if (repo_path == NULL) {
9662 				error = got_error_from_errno("strdup");
9663 				goto done;
9664 			}
9665 		}
9666 	}
9667 
9668 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
9669 	if (error)
9670 		goto done;
9671 
9672 	if (worktree) {
9673 		worktree_conf = got_worktree_get_gotconfig(worktree);
9674 		if (worktree_conf) {
9675 			got_gotconfig_get_remotes(&nremotes, &remotes,
9676 			    worktree_conf);
9677 			for (i = 0; i < nremotes; i++) {
9678 				if (strcmp(remotes[i].name, remote_name) == 0) {
9679 					remote = &remotes[i];
9680 					break;
9681 				}
9682 			}
9683 		}
9684 	}
9685 	if (remote == NULL) {
9686 		repo_conf = got_repo_get_gotconfig(repo);
9687 		if (repo_conf) {
9688 			got_gotconfig_get_remotes(&nremotes, &remotes,
9689 			    repo_conf);
9690 			for (i = 0; i < nremotes; i++) {
9691 				if (strcmp(remotes[i].name, remote_name) == 0) {
9692 					remote = &remotes[i];
9693 					break;
9694 				}
9695 			}
9696 		}
9697 	}
9698 	if (remote == NULL) {
9699 		got_repo_get_gitconfig_remotes(&nremotes, &remotes, repo);
9700 		for (i = 0; i < nremotes; i++) {
9701 			if (strcmp(remotes[i].name, remote_name) == 0) {
9702 				remote = &remotes[i];
9703 				break;
9704 			}
9705 		}
9706 	}
9707 	if (remote == NULL) {
9708 		error = got_error_path(remote_name, GOT_ERR_NO_REMOTE);
9709 		goto done;
9710 	}
9711 
9712 	error = got_dial_parse_uri(&proto, &host, &port, &server_path,
9713 	    &repo_name, remote->send_url);
9714 	if (error)
9715 		goto done;
9716 
9717 	if (strcmp(proto, "git") == 0) {
9718 #ifndef PROFILE
9719 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
9720 		    "sendfd dns inet unveil", NULL) == -1)
9721 			err(1, "pledge");
9722 #endif
9723 	} else if (strcmp(proto, "git+ssh") == 0 ||
9724 	    strcmp(proto, "ssh") == 0) {
9725 #ifndef PROFILE
9726 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
9727 		    "sendfd unveil", NULL) == -1)
9728 			err(1, "pledge");
9729 #endif
9730 	} else if (strcmp(proto, "http") == 0 ||
9731 	    strcmp(proto, "git+http") == 0) {
9732 		error = got_error_path(proto, GOT_ERR_NOT_IMPL);
9733 		goto done;
9734 	} else {
9735 		error = got_error_path(proto, GOT_ERR_BAD_PROTO);
9736 		goto done;
9737 	}
9738 
9739 	error = got_dial_apply_unveil(proto);
9740 	if (error)
9741 		goto done;
9742 
9743 	error = apply_unveil(got_repo_get_path(repo), 0, NULL);
9744 	if (error)
9745 		goto done;
9746 
9747 	if (send_all_branches) {
9748 		error = got_ref_list(&all_branches, repo, "refs/heads",
9749 		    got_ref_cmp_by_name, NULL);
9750 		if (error)
9751 			goto done;
9752 		TAILQ_FOREACH(re, &all_branches, entry) {
9753 			const char *branchname = got_ref_get_name(re->ref);
9754 			error = got_pathlist_append(&branches,
9755 			    branchname, NULL);
9756 			if (error)
9757 				goto done;
9758 			nbranches++;
9759 		}
9760 	} else if (nbranches == 0) {
9761 		for (i = 0; i < remote->nsend_branches; i++) {
9762 			error = got_pathlist_append(&branches,
9763 			    remote->send_branches[i], NULL);
9764 			if (error)
9765 				goto done;
9766 		}
9767 	}
9768 
9769 	if (send_all_tags) {
9770 		error = got_ref_list(&all_tags, repo, "refs/tags",
9771 		    got_ref_cmp_by_name, NULL);
9772 		if (error)
9773 			goto done;
9774 		TAILQ_FOREACH(re, &all_tags, entry) {
9775 			const char *tagname = got_ref_get_name(re->ref);
9776 			error = got_pathlist_append(&tags,
9777 			    tagname, NULL);
9778 			if (error)
9779 				goto done;
9780 		}
9781 	}
9782 
9783 	/*
9784 	 * To prevent accidents only branches in refs/heads/ can be deleted
9785 	 * with 'got send -d'.
9786 	 * Deleting anything else requires local repository access or Git.
9787 	 */
9788 	TAILQ_FOREACH(pe, &delete_args, entry) {
9789 		const char *branchname = pe->path;
9790 		char *s;
9791 		struct got_pathlist_entry *new;
9792 		if (strncmp(branchname, "refs/heads/", 11) == 0) {
9793 			s = strdup(branchname);
9794 			if (s == NULL) {
9795 				error = got_error_from_errno("strdup");
9796 				goto done;
9797 			}
9798 		} else {
9799 			if (asprintf(&s, "refs/heads/%s", branchname) == -1) {
9800 				error = got_error_from_errno("asprintf");
9801 				goto done;
9802 			}
9803 		}
9804 		error = got_pathlist_insert(&new, &delete_branches, s, NULL);
9805 		if (error || new == NULL /* duplicate */)
9806 			free(s);
9807 		if (error)
9808 			goto done;
9809 		ndelete_branches++;
9810 	}
9811 
9812 	if (nbranches == 0 && ndelete_branches == 0) {
9813 		struct got_reference *head_ref;
9814 		if (worktree)
9815 			error = got_ref_open(&head_ref, repo,
9816 			    got_worktree_get_head_ref_name(worktree), 0);
9817 		else
9818 			error = got_ref_open(&head_ref, repo, GOT_REF_HEAD, 0);
9819 		if (error)
9820 			goto done;
9821 		if (got_ref_is_symbolic(head_ref)) {
9822 			error = got_ref_resolve_symbolic(&ref, repo, head_ref);
9823 			got_ref_close(head_ref);
9824 			if (error)
9825 				goto done;
9826 		} else
9827 			ref = head_ref;
9828 		error = got_pathlist_append(&branches, got_ref_get_name(ref),
9829 		    NULL);
9830 		if (error)
9831 			goto done;
9832 		nbranches++;
9833 	}
9834 
9835 	if (verbosity >= 0) {
9836 		printf("Connecting to \"%s\" %s://%s%s%s%s%s\n",
9837 		    remote->name, proto, host,
9838 		    port ? ":" : "", port ? port : "",
9839 		    *server_path == '/' ? "" : "/", server_path);
9840 	}
9841 
9842 	error = got_send_connect(&sendpid, &sendfd, proto, host, port,
9843 	    server_path, verbosity);
9844 	if (error)
9845 		goto done;
9846 
9847 	memset(&spa, 0, sizeof(spa));
9848 	spa.last_scaled_packsize[0] = '\0';
9849 	spa.last_p_deltify = -1;
9850 	spa.last_p_written = -1;
9851 	spa.verbosity = verbosity;
9852 	spa.delete_branches = &delete_branches;
9853 	error = got_send_pack(remote_name, &branches, &tags, &delete_branches,
9854 	    verbosity, overwrite_refs, sendfd, repo, send_progress, &spa,
9855 	    check_cancelled, NULL);
9856 	if (spa.printed_something)
9857 		putchar('\n');
9858 	if (error)
9859 		goto done;
9860 	if (!spa.sent_something && verbosity >= 0)
9861 		printf("Already up-to-date\n");
9862 done:
9863 	if (sendpid > 0) {
9864 		if (kill(sendpid, SIGTERM) == -1)
9865 			error = got_error_from_errno("kill");
9866 		if (waitpid(sendpid, &sendstatus, 0) == -1 && error == NULL)
9867 			error = got_error_from_errno("waitpid");
9868 	}
9869 	if (sendfd != -1 && close(sendfd) == -1 && error == NULL)
9870 		error = got_error_from_errno("close");
9871 	if (repo) {
9872 		const struct got_error *close_err = got_repo_close(repo);
9873 		if (error == NULL)
9874 			error = close_err;
9875 	}
9876 	if (worktree)
9877 		got_worktree_close(worktree);
9878 	if (pack_fds) {
9879 		const struct got_error *pack_err =
9880 		    got_repo_pack_fds_close(pack_fds);
9881 		if (error == NULL)
9882 			error = pack_err;
9883 	}
9884 	if (ref)
9885 		got_ref_close(ref);
9886 	got_pathlist_free(&branches, GOT_PATHLIST_FREE_NONE);
9887 	got_pathlist_free(&tags, GOT_PATHLIST_FREE_NONE);
9888 	got_ref_list_free(&all_branches);
9889 	got_ref_list_free(&all_tags);
9890 	got_pathlist_free(&delete_args, GOT_PATHLIST_FREE_NONE);
9891 	got_pathlist_free(&delete_branches, GOT_PATHLIST_FREE_PATH);
9892 	free(cwd);
9893 	free(repo_path);
9894 	free(proto);
9895 	free(host);
9896 	free(port);
9897 	free(server_path);
9898 	free(repo_name);
9899 	return error;
9900 }
9901 
9902 /*
9903  * Print and if delete is set delete all ref_prefix references.
9904  * If wanted_ref is not NULL, only print or delete this reference.
9905  */
9906 static const struct got_error *
9907 process_logmsg_refs(const char *ref_prefix, size_t prefix_len,
9908     const char *wanted_ref, int delete, struct got_worktree *worktree,
9909     struct got_repository *repo)
9910 {
9911 	const struct got_error			*err;
9912 	struct got_pathlist_head		 paths;
9913 	struct got_reflist_head			 refs;
9914 	struct got_reflist_entry		*re;
9915 	struct got_reflist_object_id_map	*refs_idmap = NULL;
9916 	struct got_commit_object		*commit = NULL;
9917 	struct got_object_id			*id = NULL;
9918 	const char				*header_prefix;
9919 	char					*uuidstr = NULL;
9920 	int					 found = 0;
9921 
9922 	TAILQ_INIT(&refs);
9923 	TAILQ_INIT(&paths);
9924 
9925 	err = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name, repo);
9926 	if (err)
9927 		goto done;
9928 
9929 	err = got_reflist_object_id_map_create(&refs_idmap, &refs, repo);
9930 	if (err)
9931 		goto done;
9932 
9933 	if (worktree != NULL) {
9934 		err = got_worktree_get_uuid(&uuidstr, worktree);
9935 		if (err)
9936 			goto done;
9937 	}
9938 
9939 	if (wanted_ref) {
9940 		if (strncmp(wanted_ref, "refs/heads/", 11) == 0)
9941 			wanted_ref += 11;
9942 	}
9943 
9944 	if (strcmp(ref_prefix, GOT_WORKTREE_BACKOUT_REF_PREFIX) == 0)
9945 		header_prefix = "backout";
9946 	else
9947 		header_prefix = "cherrypick";
9948 
9949 	TAILQ_FOREACH(re, &refs, entry) {
9950 		const char *refname, *wt;
9951 
9952 		refname = got_ref_get_name(re->ref);
9953 
9954 		err = check_cancelled(NULL);
9955 		if (err)
9956 			goto done;
9957 
9958 		if (strncmp(refname, ref_prefix, prefix_len) == 0)
9959 			refname += prefix_len + 1;  /* skip '-' delimiter */
9960 		else
9961 			continue;
9962 
9963 		wt = refname;
9964 
9965 		if (worktree == NULL || strncmp(refname, uuidstr,
9966 		    GOT_WORKTREE_UUID_STRLEN) == 0)
9967 			refname += GOT_WORKTREE_UUID_STRLEN + 1; /* skip '-' */
9968 		else
9969 			continue;
9970 
9971 		err = got_repo_match_object_id(&id, NULL, refname,
9972 		    GOT_OBJ_TYPE_COMMIT, NULL, repo);
9973 		if (err)
9974 			goto done;
9975 
9976 		err = got_object_open_as_commit(&commit, repo, id);
9977 		if (err)
9978 			goto done;
9979 
9980 		if (wanted_ref)
9981 			found = strncmp(wanted_ref, refname,
9982 			    strlen(wanted_ref)) == 0;
9983 		if (wanted_ref && !found) {
9984 			struct got_reflist_head	*ci_refs;
9985 
9986 			ci_refs = got_reflist_object_id_map_lookup(refs_idmap,
9987 			    id);
9988 
9989 			if (ci_refs) {
9990 				char		*refs_str = NULL;
9991 				char const	*r = NULL;
9992 
9993 				err = build_refs_str(&refs_str, ci_refs, id,
9994 				    repo, 1);
9995 				if (err)
9996 					goto done;
9997 
9998 				r = refs_str;
9999 				while (r) {
10000 					if (strncmp(r, wanted_ref,
10001 					    strlen(wanted_ref)) == 0) {
10002 						found = 1;
10003 						break;
10004 					}
10005 					r = strchr(r, ' ');
10006 					if (r)
10007 						++r;
10008 				}
10009 				free(refs_str);
10010 			}
10011 		}
10012 
10013 		if (wanted_ref == NULL || found) {
10014 			if (delete) {
10015 				err = got_ref_delete(re->ref, repo);
10016 				if (err)
10017 					goto done;
10018 				printf("Deleted: ");
10019 				err = print_commit_oneline(commit, id, repo,
10020 				    refs_idmap);
10021 			} else {
10022 				/*
10023 				 * Print paths modified by commit to help
10024 				 * associate commits with worktree changes.
10025 				 */
10026 				err = get_changed_paths(&paths, commit,
10027 				    repo, NULL);
10028 				if (err)
10029 					goto done;
10030 
10031 				err = print_commit(commit, id, repo, NULL,
10032 				    &paths, NULL, 0, 0, refs_idmap, NULL,
10033 				    header_prefix);
10034 				got_pathlist_free(&paths,
10035 				    GOT_PATHLIST_FREE_ALL);
10036 
10037 				if (worktree == NULL)
10038 					printf("work tree: %.*s\n\n",
10039 					    GOT_WORKTREE_UUID_STRLEN, wt);
10040 			}
10041 			if (err || found)
10042 				goto done;
10043 		}
10044 
10045 		got_object_commit_close(commit);
10046 		commit = NULL;
10047 		free(id);
10048 		id = NULL;
10049 	}
10050 
10051 	if (wanted_ref != NULL && !found)
10052 		err = got_error_fmt(GOT_ERR_NOT_REF, "%s", wanted_ref);
10053 
10054 done:
10055 	free(id);
10056 	free(uuidstr);
10057 	got_ref_list_free(&refs);
10058 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_ALL);
10059 	if (refs_idmap)
10060 		got_reflist_object_id_map_free(refs_idmap);
10061 	if (commit)
10062 		got_object_commit_close(commit);
10063 	return err;
10064 }
10065 
10066 /*
10067  * Create new temp "logmsg" ref of the backed-out or cherrypicked commit
10068  * identified by id for log messages to prepopulate the editor on commit.
10069  */
10070 static const struct got_error *
10071 logmsg_ref(struct got_object_id *id, const char *prefix,
10072     struct got_worktree *worktree, struct got_repository *repo)
10073 {
10074 	const struct got_error	*err = NULL;
10075 	char			*idstr, *ref = NULL, *refname = NULL;
10076 	int			 histedit_in_progress;
10077 	int			 rebase_in_progress, merge_in_progress;
10078 
10079 	/*
10080 	 * Silenty refuse to create merge reference if any histedit, merge,
10081 	 * or rebase operation is in progress.
10082 	 */
10083 	err = got_worktree_histedit_in_progress(&histedit_in_progress,
10084 	    worktree);
10085 	if (err)
10086 		return err;
10087 	if (histedit_in_progress)
10088 		return NULL;
10089 
10090 	err = got_worktree_rebase_in_progress(&rebase_in_progress, worktree);
10091 	if (err)
10092 		return err;
10093 	if (rebase_in_progress)
10094 		return NULL;
10095 
10096 	err = got_worktree_merge_in_progress(&merge_in_progress, worktree,
10097 	    repo);
10098 	if (err)
10099 		return err;
10100 	if (merge_in_progress)
10101 		return NULL;
10102 
10103 	err = got_object_id_str(&idstr, id);
10104 	if (err)
10105 		return err;
10106 
10107 	err = got_worktree_get_logmsg_ref_name(&refname, worktree, prefix);
10108 	if (err)
10109 		goto done;
10110 
10111 	if (asprintf(&ref, "%s-%s", refname, idstr) == -1) {
10112 		err = got_error_from_errno("asprintf");
10113 		goto done;
10114 	}
10115 
10116 	err = create_ref(ref, got_worktree_get_base_commit_id(worktree),
10117 	    -1, repo);
10118 done:
10119 	free(ref);
10120 	free(idstr);
10121 	free(refname);
10122 	return err;
10123 }
10124 
10125 __dead static void
10126 usage_cherrypick(void)
10127 {
10128 	fprintf(stderr, "usage: %s cherrypick [-lX] [commit-id]\n",
10129 	    getprogname());
10130 	exit(1);
10131 }
10132 
10133 static const struct got_error *
10134 cmd_cherrypick(int argc, char *argv[])
10135 {
10136 	const struct got_error *error = NULL;
10137 	struct got_worktree *worktree = NULL;
10138 	struct got_repository *repo = NULL;
10139 	char *cwd = NULL, *commit_id_str = NULL;
10140 	struct got_object_id *commit_id = NULL;
10141 	struct got_commit_object *commit = NULL;
10142 	struct got_object_qid *pid;
10143 	int ch, list_refs = 0, remove_refs = 0;
10144 	struct got_update_progress_arg upa;
10145 	int *pack_fds = NULL;
10146 
10147 #ifndef PROFILE
10148 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
10149 	    "unveil", NULL) == -1)
10150 		err(1, "pledge");
10151 #endif
10152 
10153 	while ((ch = getopt(argc, argv, "lX")) != -1) {
10154 		switch (ch) {
10155 		case 'l':
10156 			list_refs = 1;
10157 			break;
10158 		case 'X':
10159 			remove_refs = 1;
10160 			break;
10161 		default:
10162 			usage_cherrypick();
10163 			/* NOTREACHED */
10164 		}
10165 	}
10166 
10167 	argc -= optind;
10168 	argv += optind;
10169 
10170 	if (list_refs || remove_refs) {
10171 		if (argc != 0 && argc != 1)
10172 			usage_cherrypick();
10173 	} else if (argc != 1)
10174 		usage_cherrypick();
10175 	if (list_refs && remove_refs)
10176 		option_conflict('l', 'X');
10177 
10178 	cwd = getcwd(NULL, 0);
10179 	if (cwd == NULL) {
10180 		error = got_error_from_errno("getcwd");
10181 		goto done;
10182 	}
10183 
10184 	error = got_repo_pack_fds_open(&pack_fds);
10185 	if (error != NULL)
10186 		goto done;
10187 
10188 	error = got_worktree_open(&worktree, cwd);
10189 	if (error) {
10190 		if (list_refs || remove_refs) {
10191 			if (error->code != GOT_ERR_NOT_WORKTREE)
10192 				goto done;
10193 		} else {
10194 			if (error->code == GOT_ERR_NOT_WORKTREE)
10195 				error = wrap_not_worktree_error(error,
10196 				    "cherrypick", cwd);
10197 			goto done;
10198 		}
10199 	}
10200 
10201 	error = got_repo_open(&repo,
10202 	    worktree ? got_worktree_get_repo_path(worktree) : cwd,
10203 	    NULL, pack_fds);
10204 	if (error != NULL)
10205 		goto done;
10206 
10207 	error = apply_unveil(got_repo_get_path(repo), 0,
10208 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
10209 	if (error)
10210 		goto done;
10211 
10212 	if (list_refs || remove_refs) {
10213 		error = process_logmsg_refs(GOT_WORKTREE_CHERRYPICK_REF_PREFIX,
10214 		    GOT_WORKTREE_CHERRYPICK_REF_PREFIX_LEN,
10215 		    argc == 1 ? argv[0] : NULL, remove_refs, worktree, repo);
10216 		goto done;
10217 	}
10218 
10219 	error = got_repo_match_object_id(&commit_id, NULL, argv[0],
10220 	    GOT_OBJ_TYPE_COMMIT, NULL, repo);
10221 	if (error)
10222 		goto done;
10223 	error = got_object_id_str(&commit_id_str, commit_id);
10224 	if (error)
10225 		goto done;
10226 
10227 	error = got_object_open_as_commit(&commit, repo, commit_id);
10228 	if (error)
10229 		goto done;
10230 	pid = STAILQ_FIRST(got_object_commit_get_parent_ids(commit));
10231 	memset(&upa, 0, sizeof(upa));
10232 	error = got_worktree_merge_files(worktree, pid ? &pid->id : NULL,
10233 	    commit_id, repo, update_progress, &upa, check_cancelled,
10234 	    NULL);
10235 	if (error != NULL)
10236 		goto done;
10237 
10238 	if (upa.did_something) {
10239 		error = logmsg_ref(commit_id,
10240 		    GOT_WORKTREE_CHERRYPICK_REF_PREFIX, worktree, repo);
10241 		if (error)
10242 			goto done;
10243 		printf("Merged commit %s\n", commit_id_str);
10244 	}
10245 	print_merge_progress_stats(&upa);
10246 done:
10247 	free(cwd);
10248 	if (commit)
10249 		got_object_commit_close(commit);
10250 	free(commit_id_str);
10251 	if (worktree)
10252 		got_worktree_close(worktree);
10253 	if (repo) {
10254 		const struct got_error *close_err = got_repo_close(repo);
10255 		if (error == NULL)
10256 			error = close_err;
10257 	}
10258 	if (pack_fds) {
10259 		const struct got_error *pack_err =
10260 		    got_repo_pack_fds_close(pack_fds);
10261 		if (error == NULL)
10262 			error = pack_err;
10263 	}
10264 
10265 	return error;
10266 }
10267 
10268 __dead static void
10269 usage_backout(void)
10270 {
10271 	fprintf(stderr, "usage: %s backout [-lX] [commit-id]\n", getprogname());
10272 	exit(1);
10273 }
10274 
10275 static const struct got_error *
10276 cmd_backout(int argc, char *argv[])
10277 {
10278 	const struct got_error *error = NULL;
10279 	struct got_worktree *worktree = NULL;
10280 	struct got_repository *repo = NULL;
10281 	char *cwd = NULL, *commit_id_str = NULL;
10282 	struct got_object_id *commit_id = NULL;
10283 	struct got_commit_object *commit = NULL;
10284 	struct got_object_qid *pid;
10285 	int ch, list_refs = 0, remove_refs = 0;
10286 	struct got_update_progress_arg upa;
10287 	int *pack_fds = NULL;
10288 
10289 #ifndef PROFILE
10290 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
10291 	    "unveil", NULL) == -1)
10292 		err(1, "pledge");
10293 #endif
10294 
10295 	while ((ch = getopt(argc, argv, "lX")) != -1) {
10296 		switch (ch) {
10297 		case 'l':
10298 			list_refs = 1;
10299 			break;
10300 		case 'X':
10301 			remove_refs = 1;
10302 			break;
10303 		default:
10304 			usage_backout();
10305 			/* NOTREACHED */
10306 		}
10307 	}
10308 
10309 	argc -= optind;
10310 	argv += optind;
10311 
10312 	if (list_refs || remove_refs) {
10313 		if (argc != 0 && argc != 1)
10314 			usage_backout();
10315 	} else if (argc != 1)
10316 		usage_backout();
10317 	if (list_refs && remove_refs)
10318 		option_conflict('l', 'X');
10319 
10320 	cwd = getcwd(NULL, 0);
10321 	if (cwd == NULL) {
10322 		error = got_error_from_errno("getcwd");
10323 		goto done;
10324 	}
10325 
10326 	error = got_repo_pack_fds_open(&pack_fds);
10327 	if (error != NULL)
10328 		goto done;
10329 
10330 	error = got_worktree_open(&worktree, cwd);
10331 	if (error) {
10332 		if (list_refs || remove_refs) {
10333 			if (error->code != GOT_ERR_NOT_WORKTREE)
10334 				goto done;
10335 		} else {
10336 			if (error->code == GOT_ERR_NOT_WORKTREE)
10337 				error = wrap_not_worktree_error(error,
10338 				    "backout", cwd);
10339 			goto done;
10340 		}
10341 	}
10342 
10343 	error = got_repo_open(&repo,
10344 	    worktree ? got_worktree_get_repo_path(worktree) : cwd,
10345 	    NULL, pack_fds);
10346 	if (error != NULL)
10347 		goto done;
10348 
10349 	error = apply_unveil(got_repo_get_path(repo), 0,
10350 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
10351 	if (error)
10352 		goto done;
10353 
10354 	if (list_refs || remove_refs) {
10355 		error = process_logmsg_refs(GOT_WORKTREE_BACKOUT_REF_PREFIX,
10356 		    GOT_WORKTREE_BACKOUT_REF_PREFIX_LEN,
10357 		    argc == 1 ? argv[0] : NULL, remove_refs, worktree, repo);
10358 		goto done;
10359 	}
10360 
10361 	error = got_repo_match_object_id(&commit_id, NULL, argv[0],
10362 	    GOT_OBJ_TYPE_COMMIT, NULL, repo);
10363 	if (error)
10364 		goto done;
10365 	error = got_object_id_str(&commit_id_str, commit_id);
10366 	if (error)
10367 		goto done;
10368 
10369 	error = got_object_open_as_commit(&commit, repo, commit_id);
10370 	if (error)
10371 		goto done;
10372 	pid = STAILQ_FIRST(got_object_commit_get_parent_ids(commit));
10373 	if (pid == NULL) {
10374 		error = got_error(GOT_ERR_ROOT_COMMIT);
10375 		goto done;
10376 	}
10377 
10378 	memset(&upa, 0, sizeof(upa));
10379 	error = got_worktree_merge_files(worktree, commit_id, &pid->id,
10380 	    repo, update_progress, &upa, check_cancelled, NULL);
10381 	if (error != NULL)
10382 		goto done;
10383 
10384 	if (upa.did_something) {
10385 		error = logmsg_ref(commit_id, GOT_WORKTREE_BACKOUT_REF_PREFIX,
10386 		    worktree, repo);
10387 		if (error)
10388 			goto done;
10389 		printf("Backed out commit %s\n", commit_id_str);
10390 	}
10391 	print_merge_progress_stats(&upa);
10392 done:
10393 	free(cwd);
10394 	if (commit)
10395 		got_object_commit_close(commit);
10396 	free(commit_id_str);
10397 	if (worktree)
10398 		got_worktree_close(worktree);
10399 	if (repo) {
10400 		const struct got_error *close_err = got_repo_close(repo);
10401 		if (error == NULL)
10402 			error = close_err;
10403 	}
10404 	if (pack_fds) {
10405 		const struct got_error *pack_err =
10406 		    got_repo_pack_fds_close(pack_fds);
10407 		if (error == NULL)
10408 			error = pack_err;
10409 	}
10410 	return error;
10411 }
10412 
10413 __dead static void
10414 usage_rebase(void)
10415 {
10416 	fprintf(stderr, "usage: %s rebase [-aCclX] [branch]\n", getprogname());
10417 	exit(1);
10418 }
10419 
10420 static void
10421 trim_logmsg(char *logmsg, int limit)
10422 {
10423 	char *nl;
10424 	size_t len;
10425 
10426 	len = strlen(logmsg);
10427 	if (len > limit)
10428 		len = limit;
10429 	logmsg[len] = '\0';
10430 	nl = strchr(logmsg, '\n');
10431 	if (nl)
10432 		*nl = '\0';
10433 }
10434 
10435 static const struct got_error *
10436 get_short_logmsg(char **logmsg, int limit, struct got_commit_object *commit)
10437 {
10438 	const struct got_error *err;
10439 	char *logmsg0 = NULL;
10440 	const char *s;
10441 
10442 	err = got_object_commit_get_logmsg(&logmsg0, commit);
10443 	if (err)
10444 		return err;
10445 
10446 	s = logmsg0;
10447 	while (isspace((unsigned char)s[0]))
10448 		s++;
10449 
10450 	*logmsg = strdup(s);
10451 	if (*logmsg == NULL) {
10452 		err = got_error_from_errno("strdup");
10453 		goto done;
10454 	}
10455 
10456 	trim_logmsg(*logmsg, limit);
10457 done:
10458 	free(logmsg0);
10459 	return err;
10460 }
10461 
10462 static const struct got_error *
10463 show_rebase_merge_conflict(struct got_object_id *id,
10464     struct got_repository *repo)
10465 {
10466 	const struct got_error *err;
10467 	struct got_commit_object *commit = NULL;
10468 	char *id_str = NULL, *logmsg = NULL;
10469 
10470 	err = got_object_open_as_commit(&commit, repo, id);
10471 	if (err)
10472 		return err;
10473 
10474 	err = got_object_id_str(&id_str, id);
10475 	if (err)
10476 		goto done;
10477 
10478 	id_str[12] = '\0';
10479 
10480 	err = get_short_logmsg(&logmsg, 42, commit);
10481 	if (err)
10482 		goto done;
10483 
10484 	printf("%s -> merge conflict: %s\n", id_str, logmsg);
10485 done:
10486 	free(id_str);
10487 	got_object_commit_close(commit);
10488 	free(logmsg);
10489 	return err;
10490 }
10491 
10492 static const struct got_error *
10493 show_rebase_progress(struct got_commit_object *commit,
10494     struct got_object_id *old_id, struct got_object_id *new_id)
10495 {
10496 	const struct got_error *err;
10497 	char *old_id_str = NULL, *new_id_str = NULL, *logmsg = NULL;
10498 
10499 	err = got_object_id_str(&old_id_str, old_id);
10500 	if (err)
10501 		goto done;
10502 
10503 	if (new_id) {
10504 		err = got_object_id_str(&new_id_str, new_id);
10505 		if (err)
10506 			goto done;
10507 	}
10508 
10509 	old_id_str[12] = '\0';
10510 	if (new_id_str)
10511 		new_id_str[12] = '\0';
10512 
10513 	err = get_short_logmsg(&logmsg, 42, commit);
10514 	if (err)
10515 		goto done;
10516 
10517 	printf("%s -> %s: %s\n", old_id_str,
10518 	    new_id_str ? new_id_str : "no-op change", logmsg);
10519 done:
10520 	free(old_id_str);
10521 	free(new_id_str);
10522 	free(logmsg);
10523 	return err;
10524 }
10525 
10526 static const struct got_error *
10527 rebase_complete(struct got_worktree *worktree, struct got_fileindex *fileindex,
10528     struct got_reference *branch, struct got_reference *tmp_branch,
10529     struct got_repository *repo, int create_backup)
10530 {
10531 	printf("Switching work tree to %s\n", got_ref_get_name(branch));
10532 	return got_worktree_rebase_complete(worktree, fileindex,
10533 	    tmp_branch, branch, repo, create_backup);
10534 }
10535 
10536 static const struct got_error *
10537 rebase_commit(struct got_pathlist_head *merged_paths,
10538     struct got_worktree *worktree, struct got_fileindex *fileindex,
10539     struct got_reference *tmp_branch, const char *committer,
10540     struct got_object_id *commit_id, int allow_conflict,
10541     struct got_repository *repo)
10542 {
10543 	const struct got_error *error;
10544 	struct got_commit_object *commit;
10545 	struct got_object_id *new_commit_id;
10546 
10547 	error = got_object_open_as_commit(&commit, repo, commit_id);
10548 	if (error)
10549 		return error;
10550 
10551 	error = got_worktree_rebase_commit(&new_commit_id, merged_paths,
10552 	    worktree, fileindex, tmp_branch, committer, commit, commit_id,
10553 	    allow_conflict, repo);
10554 	if (error) {
10555 		if (error->code != GOT_ERR_COMMIT_NO_CHANGES)
10556 			goto done;
10557 		error = show_rebase_progress(commit, commit_id, NULL);
10558 	} else {
10559 		error = show_rebase_progress(commit, commit_id, new_commit_id);
10560 		free(new_commit_id);
10561 	}
10562 done:
10563 	got_object_commit_close(commit);
10564 	return error;
10565 }
10566 
10567 struct check_path_prefix_arg {
10568 	const char *path_prefix;
10569 	size_t len;
10570 	int errcode;
10571 };
10572 
10573 static const struct got_error *
10574 check_path_prefix_in_diff(void *arg, struct got_blob_object *blob1,
10575     struct got_blob_object *blob2, FILE *f1, FILE *f2,
10576     struct got_object_id *id1, struct got_object_id *id2,
10577     const char *path1, const char *path2,
10578     mode_t mode1, mode_t mode2, struct got_repository *repo)
10579 {
10580 	struct check_path_prefix_arg *a = arg;
10581 
10582 	if ((path1 && !got_path_is_child(path1, a->path_prefix, a->len)) ||
10583 	    (path2 && !got_path_is_child(path2, a->path_prefix, a->len)))
10584 		return got_error(a->errcode);
10585 
10586 	return NULL;
10587 }
10588 
10589 static const struct got_error *
10590 check_path_prefix(struct got_object_id *parent_id,
10591     struct got_object_id *commit_id, const char *path_prefix,
10592     int errcode, struct got_repository *repo)
10593 {
10594 	const struct got_error *err;
10595 	struct got_tree_object *tree1 = NULL, *tree2 = NULL;
10596 	struct got_commit_object *commit = NULL, *parent_commit = NULL;
10597 	struct check_path_prefix_arg cpp_arg;
10598 
10599 	if (got_path_is_root_dir(path_prefix))
10600 		return NULL;
10601 
10602 	err = got_object_open_as_commit(&commit, repo, commit_id);
10603 	if (err)
10604 		goto done;
10605 
10606 	err = got_object_open_as_commit(&parent_commit, repo, parent_id);
10607 	if (err)
10608 		goto done;
10609 
10610 	err = got_object_open_as_tree(&tree1, repo,
10611 	    got_object_commit_get_tree_id(parent_commit));
10612 	if (err)
10613 		goto done;
10614 
10615 	err = got_object_open_as_tree(&tree2, repo,
10616 	    got_object_commit_get_tree_id(commit));
10617 	if (err)
10618 		goto done;
10619 
10620 	cpp_arg.path_prefix = path_prefix;
10621 	while (cpp_arg.path_prefix[0] == '/')
10622 		cpp_arg.path_prefix++;
10623 	cpp_arg.len = strlen(cpp_arg.path_prefix);
10624 	cpp_arg.errcode = errcode;
10625 	err = got_diff_tree(tree1, tree2, NULL, NULL, -1, -1, "", "", repo,
10626 	    check_path_prefix_in_diff, &cpp_arg, 0);
10627 done:
10628 	if (tree1)
10629 		got_object_tree_close(tree1);
10630 	if (tree2)
10631 		got_object_tree_close(tree2);
10632 	if (commit)
10633 		got_object_commit_close(commit);
10634 	if (parent_commit)
10635 		got_object_commit_close(parent_commit);
10636 	return err;
10637 }
10638 
10639 static const struct got_error *
10640 collect_commits(struct got_object_id_queue *commits,
10641     struct got_object_id *initial_commit_id,
10642     struct got_object_id *iter_start_id, struct got_object_id *iter_stop_id,
10643     const char *path_prefix, int path_prefix_errcode,
10644     struct got_repository *repo)
10645 {
10646 	const struct got_error *err = NULL;
10647 	struct got_commit_graph *graph = NULL;
10648 	struct got_object_id parent_id, commit_id;
10649 	struct got_object_qid *qid;
10650 
10651 	err = got_commit_graph_open(&graph, "/", 1);
10652 	if (err)
10653 		return err;
10654 
10655 	err = got_commit_graph_iter_start(graph, iter_start_id, repo,
10656 	    check_cancelled, NULL);
10657 	if (err)
10658 		goto done;
10659 
10660 	memcpy(&commit_id, initial_commit_id, sizeof(commit_id));
10661 	while (got_object_id_cmp(&commit_id, iter_stop_id) != 0) {
10662 		err = got_commit_graph_iter_next(&parent_id, graph, repo,
10663 		    check_cancelled, NULL);
10664 		if (err) {
10665 			if (err->code == GOT_ERR_ITER_COMPLETED) {
10666 				err = got_error_msg(GOT_ERR_ANCESTRY,
10667 				    "ran out of commits to rebase before "
10668 				    "youngest common ancestor commit has "
10669 				    "been reached?!?");
10670 			}
10671 			goto done;
10672 		} else {
10673 			err = check_path_prefix(&parent_id, &commit_id,
10674 			    path_prefix, path_prefix_errcode, repo);
10675 			if (err)
10676 				goto done;
10677 
10678 			err = got_object_qid_alloc(&qid, &commit_id);
10679 			if (err)
10680 				goto done;
10681 			STAILQ_INSERT_HEAD(commits, qid, entry);
10682 
10683 			memcpy(&commit_id, &parent_id, sizeof(commit_id));
10684 		}
10685 	}
10686 done:
10687 	got_commit_graph_close(graph);
10688 	return err;
10689 }
10690 
10691 static const struct got_error *
10692 get_commit_brief_str(char **brief_str, struct got_commit_object *commit)
10693 {
10694 	const struct got_error *err = NULL;
10695 	time_t committer_time;
10696 	struct tm tm;
10697 	char datebuf[11]; /* YYYY-MM-DD + NUL */
10698 	char *author0 = NULL, *author, *smallerthan;
10699 	char *logmsg0 = NULL, *logmsg, *newline;
10700 
10701 	committer_time = got_object_commit_get_committer_time(commit);
10702 	if (gmtime_r(&committer_time, &tm) == NULL)
10703 		return got_error_from_errno("gmtime_r");
10704 	if (strftime(datebuf, sizeof(datebuf), "%G-%m-%d", &tm) == 0)
10705 		return got_error(GOT_ERR_NO_SPACE);
10706 
10707 	author0 = strdup(got_object_commit_get_author(commit));
10708 	if (author0 == NULL)
10709 		return got_error_from_errno("strdup");
10710 	author = author0;
10711 	smallerthan = strchr(author, '<');
10712 	if (smallerthan && smallerthan[1] != '\0')
10713 		author = smallerthan + 1;
10714 	author[strcspn(author, "@>")] = '\0';
10715 
10716 	err = got_object_commit_get_logmsg(&logmsg0, commit);
10717 	if (err)
10718 		goto done;
10719 	logmsg = logmsg0;
10720 	while (*logmsg == '\n')
10721 		logmsg++;
10722 	newline = strchr(logmsg, '\n');
10723 	if (newline)
10724 		*newline = '\0';
10725 
10726 	if (asprintf(brief_str, "%s %s  %s",
10727 	    datebuf, author, logmsg) == -1)
10728 		err = got_error_from_errno("asprintf");
10729 done:
10730 	free(author0);
10731 	free(logmsg0);
10732 	return err;
10733 }
10734 
10735 static const struct got_error *
10736 delete_backup_ref(struct got_reference *ref, struct got_object_id *id,
10737     struct got_repository *repo)
10738 {
10739 	const struct got_error *err;
10740 	char *id_str;
10741 
10742 	err = got_object_id_str(&id_str, id);
10743 	if (err)
10744 		return err;
10745 
10746 	err = got_ref_delete(ref, repo);
10747 	if (err)
10748 		goto done;
10749 
10750 	printf("Deleted %s: %s\n", got_ref_get_name(ref), id_str);
10751 done:
10752 	free(id_str);
10753 	return err;
10754 }
10755 
10756 static const struct got_error *
10757 print_backup_ref(const char *branch_name, const char *new_id_str,
10758     struct got_object_id *old_commit_id, struct got_commit_object *old_commit,
10759     struct got_reflist_object_id_map *refs_idmap,
10760     struct got_repository *repo)
10761 {
10762 	const struct got_error *err = NULL;
10763 	struct got_reflist_head *refs;
10764 	char *refs_str = NULL;
10765 	struct got_object_id *new_commit_id = NULL;
10766 	struct got_commit_object *new_commit = NULL;
10767 	char *new_commit_brief_str = NULL;
10768 	struct got_object_id *yca_id = NULL;
10769 	struct got_commit_object *yca_commit = NULL;
10770 	char *yca_id_str = NULL, *yca_brief_str = NULL;
10771 	char *custom_refs_str;
10772 
10773 	if (asprintf(&custom_refs_str, "formerly %s", branch_name) == -1)
10774 		return got_error_from_errno("asprintf");
10775 
10776 	err = print_commit(old_commit, old_commit_id, repo, NULL, NULL, NULL,
10777 	    0, 0, refs_idmap, custom_refs_str, NULL);
10778 	if (err)
10779 		goto done;
10780 
10781 	err = got_object_resolve_id_str(&new_commit_id, repo, new_id_str);
10782 	if (err)
10783 		goto done;
10784 
10785 	refs = got_reflist_object_id_map_lookup(refs_idmap, new_commit_id);
10786 	if (refs) {
10787 		err = build_refs_str(&refs_str, refs, new_commit_id, repo, 0);
10788 		if (err)
10789 			goto done;
10790 	}
10791 
10792 	err = got_object_open_as_commit(&new_commit, repo, new_commit_id);
10793 	if (err)
10794 		goto done;
10795 
10796 	err = get_commit_brief_str(&new_commit_brief_str, new_commit);
10797 	if (err)
10798 		goto done;
10799 
10800 	err = got_commit_graph_find_youngest_common_ancestor(&yca_id,
10801 	    old_commit_id, new_commit_id, 1, repo, check_cancelled, NULL);
10802 	if (err)
10803 		goto done;
10804 
10805 	printf("has become commit %s%s%s%s\n %s\n", new_id_str,
10806 	    refs_str ? " (" : "", refs_str ? refs_str : "",
10807 	    refs_str ? ")" : "", new_commit_brief_str);
10808 	if (yca_id && got_object_id_cmp(yca_id, new_commit_id) != 0 &&
10809 	    got_object_id_cmp(yca_id, old_commit_id) != 0) {
10810 		free(refs_str);
10811 		refs_str = NULL;
10812 
10813 		err = got_object_open_as_commit(&yca_commit, repo, yca_id);
10814 		if (err)
10815 			goto done;
10816 
10817 		err = get_commit_brief_str(&yca_brief_str, yca_commit);
10818 		if (err)
10819 			goto done;
10820 
10821 		err = got_object_id_str(&yca_id_str, yca_id);
10822 		if (err)
10823 			goto done;
10824 
10825 		refs = got_reflist_object_id_map_lookup(refs_idmap, yca_id);
10826 		if (refs) {
10827 			err = build_refs_str(&refs_str, refs, yca_id, repo, 0);
10828 			if (err)
10829 				goto done;
10830 		}
10831 		printf("history forked at %s%s%s%s\n %s\n",
10832 		    yca_id_str,
10833 		    refs_str ? " (" : "", refs_str ? refs_str : "",
10834 		    refs_str ? ")" : "", yca_brief_str);
10835 	}
10836 done:
10837 	free(custom_refs_str);
10838 	free(new_commit_id);
10839 	free(refs_str);
10840 	free(yca_id);
10841 	free(yca_id_str);
10842 	free(yca_brief_str);
10843 	if (new_commit)
10844 		got_object_commit_close(new_commit);
10845 	if (yca_commit)
10846 		got_object_commit_close(yca_commit);
10847 
10848 	return err;
10849 }
10850 
10851 static const struct got_error *
10852 worktree_has_logmsg_ref(const char *caller, struct got_worktree *worktree,
10853     struct got_repository *repo)
10854 {
10855 	const struct got_error		*err;
10856 	struct got_reflist_head		 refs;
10857 	struct got_reflist_entry	*re;
10858 	char				*uuidstr = NULL;
10859 	static char			 msg[160];
10860 
10861 	TAILQ_INIT(&refs);
10862 
10863 	err = got_worktree_get_uuid(&uuidstr, worktree);
10864 	if (err)
10865 		goto done;
10866 
10867 	err = got_ref_list(&refs, repo, "refs/got/worktree",
10868 	    got_ref_cmp_by_name, repo);
10869 	if (err)
10870 		goto done;
10871 
10872 	TAILQ_FOREACH(re, &refs, entry) {
10873 		const char *cmd, *refname, *type;
10874 
10875 		refname = got_ref_get_name(re->ref);
10876 
10877 		if (strncmp(refname, GOT_WORKTREE_CHERRYPICK_REF_PREFIX,
10878 		    GOT_WORKTREE_CHERRYPICK_REF_PREFIX_LEN) == 0) {
10879 			refname += GOT_WORKTREE_CHERRYPICK_REF_PREFIX_LEN + 1;
10880 			cmd = "cherrypick";
10881 			type = "cherrypicked";
10882 		} else if (strncmp(refname, GOT_WORKTREE_BACKOUT_REF_PREFIX,
10883 		    GOT_WORKTREE_BACKOUT_REF_PREFIX_LEN) == 0) {
10884 			refname += GOT_WORKTREE_BACKOUT_REF_PREFIX_LEN + 1;
10885 			cmd = "backout";
10886 			type = "backed-out";
10887 		} else
10888 			continue;
10889 
10890 		if (strncmp(refname, uuidstr, GOT_WORKTREE_UUID_STRLEN) != 0)
10891 			continue;
10892 
10893 		snprintf(msg, sizeof(msg),
10894 		    "work tree has references created by %s commits which "
10895 		    "must be removed with 'got %s -X' before running the %s "
10896 		    "command", type, cmd, caller);
10897 		err = got_error_msg(GOT_ERR_WORKTREE_META, msg);
10898 		goto done;
10899 	}
10900 
10901 done:
10902 	free(uuidstr);
10903 	got_ref_list_free(&refs);
10904 	return err;
10905 }
10906 
10907 static const struct got_error *
10908 process_backup_refs(const char *backup_ref_prefix,
10909     const char *wanted_branch_name,
10910     int delete, struct got_repository *repo)
10911 {
10912 	const struct got_error *err;
10913 	struct got_reflist_head refs, backup_refs;
10914 	struct got_reflist_entry *re;
10915 	const size_t backup_ref_prefix_len = strlen(backup_ref_prefix);
10916 	struct got_object_id *old_commit_id = NULL;
10917 	char *branch_name = NULL;
10918 	struct got_commit_object *old_commit = NULL;
10919 	struct got_reflist_object_id_map *refs_idmap = NULL;
10920 	int wanted_branch_found = 0;
10921 
10922 	TAILQ_INIT(&refs);
10923 	TAILQ_INIT(&backup_refs);
10924 
10925 	err = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name, NULL);
10926 	if (err)
10927 		return err;
10928 
10929 	err = got_reflist_object_id_map_create(&refs_idmap, &refs, repo);
10930 	if (err)
10931 		goto done;
10932 
10933 	if (wanted_branch_name) {
10934 		if (strncmp(wanted_branch_name, "refs/heads/", 11) == 0)
10935 			wanted_branch_name += 11;
10936 	}
10937 
10938 	err = got_ref_list(&backup_refs, repo, backup_ref_prefix,
10939 	    got_ref_cmp_by_commit_timestamp_descending, repo);
10940 	if (err)
10941 		goto done;
10942 
10943 	TAILQ_FOREACH(re, &backup_refs, entry) {
10944 		const char *refname = got_ref_get_name(re->ref);
10945 		char *slash;
10946 
10947 		err = check_cancelled(NULL);
10948 		if (err)
10949 			break;
10950 
10951 		err = got_ref_resolve(&old_commit_id, repo, re->ref);
10952 		if (err)
10953 			break;
10954 
10955 		err = got_object_open_as_commit(&old_commit, repo,
10956 		    old_commit_id);
10957 		if (err)
10958 			break;
10959 
10960 		if (strncmp(backup_ref_prefix, refname,
10961 		    backup_ref_prefix_len) == 0)
10962 			refname += backup_ref_prefix_len;
10963 
10964 		while (refname[0] == '/')
10965 			refname++;
10966 
10967 		branch_name = strdup(refname);
10968 		if (branch_name == NULL) {
10969 			err = got_error_from_errno("strdup");
10970 			break;
10971 		}
10972 		slash = strrchr(branch_name, '/');
10973 		if (slash) {
10974 			*slash = '\0';
10975 			refname += strlen(branch_name) + 1;
10976 		}
10977 
10978 		if (wanted_branch_name == NULL ||
10979 		    strcmp(wanted_branch_name, branch_name) == 0) {
10980 			wanted_branch_found = 1;
10981 			if (delete) {
10982 				err = delete_backup_ref(re->ref,
10983 				    old_commit_id, repo);
10984 			} else {
10985 				err = print_backup_ref(branch_name, refname,
10986 				    old_commit_id, old_commit, refs_idmap,
10987 				    repo);
10988 			}
10989 			if (err)
10990 				break;
10991 		}
10992 
10993 		free(old_commit_id);
10994 		old_commit_id = NULL;
10995 		free(branch_name);
10996 		branch_name = NULL;
10997 		got_object_commit_close(old_commit);
10998 		old_commit = NULL;
10999 	}
11000 
11001 	if (wanted_branch_name && !wanted_branch_found) {
11002 		err = got_error_fmt(GOT_ERR_NOT_REF,
11003 		    "%s/%s/", backup_ref_prefix, wanted_branch_name);
11004 	}
11005 done:
11006 	if (refs_idmap)
11007 		got_reflist_object_id_map_free(refs_idmap);
11008 	got_ref_list_free(&refs);
11009 	got_ref_list_free(&backup_refs);
11010 	free(old_commit_id);
11011 	free(branch_name);
11012 	if (old_commit)
11013 		got_object_commit_close(old_commit);
11014 	return err;
11015 }
11016 
11017 static const struct got_error *
11018 abort_progress(void *arg, unsigned char status, const char *path)
11019 {
11020 	/*
11021 	 * Unversioned files should not clutter progress output when
11022 	 * an operation is aborted.
11023 	 */
11024 	if (status == GOT_STATUS_UNVERSIONED)
11025 		return NULL;
11026 
11027 	return update_progress(arg, status, path);
11028 }
11029 
11030 static const struct got_error *
11031 cmd_rebase(int argc, char *argv[])
11032 {
11033 	const struct got_error *error = NULL;
11034 	struct got_worktree *worktree = NULL;
11035 	struct got_repository *repo = NULL;
11036 	struct got_fileindex *fileindex = NULL;
11037 	char *cwd = NULL, *committer = NULL, *gitconfig_path = NULL;
11038 	struct got_reference *branch = NULL;
11039 	struct got_reference *new_base_branch = NULL, *tmp_branch = NULL;
11040 	struct got_object_id *commit_id = NULL, *parent_id = NULL;
11041 	struct got_object_id *resume_commit_id = NULL;
11042 	struct got_object_id *branch_head_commit_id = NULL, *yca_id = NULL;
11043 	struct got_object_id *head_commit_id = NULL;
11044 	struct got_reference *head_ref = NULL;
11045 	struct got_commit_object *commit = NULL;
11046 	int ch, rebase_in_progress = 0, abort_rebase = 0, continue_rebase = 0;
11047 	int histedit_in_progress = 0, merge_in_progress = 0;
11048 	int create_backup = 1, list_backups = 0, delete_backups = 0;
11049 	int allow_conflict = 0;
11050 	struct got_object_id_queue commits;
11051 	struct got_pathlist_head merged_paths;
11052 	const struct got_object_id_queue *parent_ids;
11053 	struct got_object_qid *qid, *pid;
11054 	struct got_update_progress_arg upa;
11055 	int *pack_fds = NULL;
11056 
11057 	STAILQ_INIT(&commits);
11058 	TAILQ_INIT(&merged_paths);
11059 	memset(&upa, 0, sizeof(upa));
11060 
11061 #ifndef PROFILE
11062 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
11063 	    "unveil", NULL) == -1)
11064 		err(1, "pledge");
11065 #endif
11066 
11067 	while ((ch = getopt(argc, argv, "aCclX")) != -1) {
11068 		switch (ch) {
11069 		case 'a':
11070 			abort_rebase = 1;
11071 			break;
11072 		case 'C':
11073 			allow_conflict = 1;
11074 			break;
11075 		case 'c':
11076 			continue_rebase = 1;
11077 			break;
11078 		case 'l':
11079 			list_backups = 1;
11080 			break;
11081 		case 'X':
11082 			delete_backups = 1;
11083 			break;
11084 		default:
11085 			usage_rebase();
11086 			/* NOTREACHED */
11087 		}
11088 	}
11089 
11090 	argc -= optind;
11091 	argv += optind;
11092 
11093 	if (list_backups) {
11094 		if (abort_rebase)
11095 			option_conflict('l', 'a');
11096 		if (allow_conflict)
11097 			option_conflict('l', 'C');
11098 		if (continue_rebase)
11099 			option_conflict('l', 'c');
11100 		if (delete_backups)
11101 			option_conflict('l', 'X');
11102 		if (argc != 0 && argc != 1)
11103 			usage_rebase();
11104 	} else if (delete_backups) {
11105 		if (abort_rebase)
11106 			option_conflict('X', 'a');
11107 		if (allow_conflict)
11108 			option_conflict('X', 'C');
11109 		if (continue_rebase)
11110 			option_conflict('X', 'c');
11111 		if (list_backups)
11112 			option_conflict('l', 'X');
11113 		if (argc != 0 && argc != 1)
11114 			usage_rebase();
11115 	} else if (allow_conflict) {
11116 		if (abort_rebase)
11117 			option_conflict('C', 'a');
11118 		if (!continue_rebase)
11119 			errx(1, "-C option requires -c");
11120 	} else {
11121 		if (abort_rebase && continue_rebase)
11122 			usage_rebase();
11123 		else if (abort_rebase || continue_rebase) {
11124 			if (argc != 0)
11125 				usage_rebase();
11126 		} else if (argc != 1)
11127 			usage_rebase();
11128 	}
11129 
11130 	cwd = getcwd(NULL, 0);
11131 	if (cwd == NULL) {
11132 		error = got_error_from_errno("getcwd");
11133 		goto done;
11134 	}
11135 
11136 	error = got_repo_pack_fds_open(&pack_fds);
11137 	if (error != NULL)
11138 		goto done;
11139 
11140 	error = got_worktree_open(&worktree, cwd);
11141 	if (error) {
11142 		if (list_backups || delete_backups) {
11143 			if (error->code != GOT_ERR_NOT_WORKTREE)
11144 				goto done;
11145 		} else {
11146 			if (error->code == GOT_ERR_NOT_WORKTREE)
11147 				error = wrap_not_worktree_error(error,
11148 				    "rebase", cwd);
11149 			goto done;
11150 		}
11151 	}
11152 
11153 	error = get_gitconfig_path(&gitconfig_path);
11154 	if (error)
11155 		goto done;
11156 	error = got_repo_open(&repo,
11157 	    worktree ? got_worktree_get_repo_path(worktree) : cwd,
11158 	    gitconfig_path, pack_fds);
11159 	if (error != NULL)
11160 		goto done;
11161 
11162 	if (worktree != NULL && !list_backups && !delete_backups) {
11163 		error = worktree_has_logmsg_ref("rebase", worktree, repo);
11164 		if (error)
11165 			goto done;
11166 	}
11167 
11168 	error = get_author(&committer, repo, worktree);
11169 	if (error && error->code != GOT_ERR_COMMIT_NO_AUTHOR)
11170 		goto done;
11171 
11172 	error = apply_unveil(got_repo_get_path(repo), 0,
11173 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
11174 	if (error)
11175 		goto done;
11176 
11177 	if (list_backups || delete_backups) {
11178 		error = process_backup_refs(
11179 		    GOT_WORKTREE_REBASE_BACKUP_REF_PREFIX,
11180 		    argc == 1 ? argv[0] : NULL, delete_backups, repo);
11181 		goto done; /* nothing else to do */
11182 	}
11183 
11184 	error = got_worktree_histedit_in_progress(&histedit_in_progress,
11185 	    worktree);
11186 	if (error)
11187 		goto done;
11188 	if (histedit_in_progress) {
11189 		error = got_error(GOT_ERR_HISTEDIT_BUSY);
11190 		goto done;
11191 	}
11192 
11193 	error = got_worktree_merge_in_progress(&merge_in_progress,
11194 	    worktree, repo);
11195 	if (error)
11196 		goto done;
11197 	if (merge_in_progress) {
11198 		error = got_error(GOT_ERR_MERGE_BUSY);
11199 		goto done;
11200 	}
11201 
11202 	error = got_worktree_rebase_in_progress(&rebase_in_progress, worktree);
11203 	if (error)
11204 		goto done;
11205 
11206 	if (abort_rebase) {
11207 		if (!rebase_in_progress) {
11208 			error = got_error(GOT_ERR_NOT_REBASING);
11209 			goto done;
11210 		}
11211 		error = got_worktree_rebase_continue(&resume_commit_id,
11212 		    &new_base_branch, &tmp_branch, &branch, &fileindex,
11213 		    worktree, repo);
11214 		if (error)
11215 			goto done;
11216 		printf("Switching work tree to %s\n",
11217 		    got_ref_get_symref_target(new_base_branch));
11218 		error = got_worktree_rebase_abort(worktree, fileindex, repo,
11219 		    new_base_branch, abort_progress, &upa);
11220 		if (error)
11221 			goto done;
11222 		printf("Rebase of %s aborted\n", got_ref_get_name(branch));
11223 		print_merge_progress_stats(&upa);
11224 		goto done; /* nothing else to do */
11225 	}
11226 
11227 	if (continue_rebase) {
11228 		if (!rebase_in_progress) {
11229 			error = got_error(GOT_ERR_NOT_REBASING);
11230 			goto done;
11231 		}
11232 		error = got_worktree_rebase_continue(&resume_commit_id,
11233 		    &new_base_branch, &tmp_branch, &branch, &fileindex,
11234 		    worktree, repo);
11235 		if (error)
11236 			goto done;
11237 
11238 		error = rebase_commit(NULL, worktree, fileindex, tmp_branch,
11239 		    committer, resume_commit_id, allow_conflict, repo);
11240 		if (error)
11241 			goto done;
11242 
11243 		yca_id = got_object_id_dup(resume_commit_id);
11244 		if (yca_id == NULL) {
11245 			error = got_error_from_errno("got_object_id_dup");
11246 			goto done;
11247 		}
11248 	} else {
11249 		error = got_ref_open(&branch, repo, argv[0], 0);
11250 		if (error != NULL)
11251 			goto done;
11252 		if (strncmp(got_ref_get_name(branch), "refs/heads/", 11) != 0) {
11253 			error = got_error_msg(GOT_ERR_COMMIT_BRANCH,
11254 			    "will not rebase a branch which lives outside "
11255 			    "the \"refs/heads/\" reference namespace");
11256 			goto done;
11257 		}
11258 	}
11259 
11260 	error = got_ref_resolve(&branch_head_commit_id, repo, branch);
11261 	if (error)
11262 		goto done;
11263 
11264 	if (!continue_rebase) {
11265 		struct got_object_id *base_commit_id;
11266 
11267 		error = got_ref_open(&head_ref, repo,
11268 		    got_worktree_get_head_ref_name(worktree), 0);
11269 		if (error)
11270 			goto done;
11271 		error = got_ref_resolve(&head_commit_id, repo, head_ref);
11272 		if (error)
11273 			goto done;
11274 		base_commit_id = got_worktree_get_base_commit_id(worktree);
11275 		if (got_object_id_cmp(base_commit_id, head_commit_id) != 0) {
11276 			error = got_error(GOT_ERR_REBASE_OUT_OF_DATE);
11277 			goto done;
11278 		}
11279 
11280 		error = got_commit_graph_find_youngest_common_ancestor(&yca_id,
11281 		    base_commit_id, branch_head_commit_id, 1, repo,
11282 		    check_cancelled, NULL);
11283 		if (error) {
11284 			if (error->code == GOT_ERR_ANCESTRY) {
11285 				error = got_error_msg(GOT_ERR_ANCESTRY,
11286 				    "specified branch shares no common "
11287 				    "ancestry with work tree's branch");
11288 			}
11289 			goto done;
11290 		}
11291 
11292 		error = check_same_branch(base_commit_id, branch, yca_id, repo);
11293 		if (error) {
11294 			if (error->code != GOT_ERR_ANCESTRY)
11295 				goto done;
11296 			error = NULL;
11297 		} else {
11298 			struct got_pathlist_head paths;
11299 			printf("%s is already based on %s\n",
11300 			    got_ref_get_name(branch),
11301 			    got_worktree_get_head_ref_name(worktree));
11302 			error = switch_head_ref(branch, branch_head_commit_id,
11303 			    worktree, repo);
11304 			if (error)
11305 				goto done;
11306 			error = got_worktree_set_base_commit_id(worktree, repo,
11307 			    branch_head_commit_id);
11308 			if (error)
11309 				goto done;
11310 			TAILQ_INIT(&paths);
11311 			error = got_pathlist_append(&paths, "", NULL);
11312 			if (error)
11313 				goto done;
11314 			error = got_worktree_checkout_files(worktree,
11315 			    &paths, repo, update_progress, &upa,
11316 			    check_cancelled, NULL);
11317 			got_pathlist_free(&paths, GOT_PATHLIST_FREE_NONE);
11318 			if (error)
11319 				goto done;
11320 			if (upa.did_something) {
11321 				char *id_str;
11322 				error = got_object_id_str(&id_str,
11323 				    branch_head_commit_id);
11324 				if (error)
11325 					goto done;
11326 				printf("Updated to %s: %s\n",
11327 				    got_worktree_get_head_ref_name(worktree),
11328 				    id_str);
11329 				free(id_str);
11330 			} else
11331 				printf("Already up-to-date\n");
11332 			print_update_progress_stats(&upa);
11333 			goto done;
11334 		}
11335 	}
11336 
11337 	commit_id = branch_head_commit_id;
11338 	error = got_object_open_as_commit(&commit, repo, commit_id);
11339 	if (error)
11340 		goto done;
11341 
11342 	parent_ids = got_object_commit_get_parent_ids(commit);
11343 	pid = STAILQ_FIRST(parent_ids);
11344 	if (pid) {
11345 		error = collect_commits(&commits, commit_id, &pid->id,
11346 		    yca_id, got_worktree_get_path_prefix(worktree),
11347 		    GOT_ERR_REBASE_PATH, repo);
11348 		if (error)
11349 			goto done;
11350 	}
11351 
11352 	got_object_commit_close(commit);
11353 	commit = NULL;
11354 
11355 	if (!continue_rebase) {
11356 		error = got_worktree_rebase_prepare(&new_base_branch,
11357 		    &tmp_branch, &fileindex, worktree, branch, repo);
11358 		if (error)
11359 			goto done;
11360 	}
11361 
11362 	if (STAILQ_EMPTY(&commits)) {
11363 		if (continue_rebase) {
11364 			error = rebase_complete(worktree, fileindex,
11365 			    branch, tmp_branch, repo, create_backup);
11366 			goto done;
11367 		} else {
11368 			/* Fast-forward the reference of the branch. */
11369 			struct got_object_id *new_head_commit_id;
11370 			char *id_str;
11371 			error = got_ref_resolve(&new_head_commit_id, repo,
11372 			    new_base_branch);
11373 			if (error)
11374 				goto done;
11375 			error = got_object_id_str(&id_str, new_head_commit_id);
11376 			if (error)
11377 				goto done;
11378 			printf("Forwarding %s to commit %s\n",
11379 			    got_ref_get_name(branch), id_str);
11380 			free(id_str);
11381 			error = got_ref_change_ref(branch,
11382 			    new_head_commit_id);
11383 			if (error)
11384 				goto done;
11385 			/* No backup needed since objects did not change. */
11386 			create_backup = 0;
11387 		}
11388 	}
11389 
11390 	pid = NULL;
11391 	STAILQ_FOREACH(qid, &commits, entry) {
11392 
11393 		commit_id = &qid->id;
11394 		parent_id = pid ? &pid->id : yca_id;
11395 		pid = qid;
11396 
11397 		memset(&upa, 0, sizeof(upa));
11398 		error = got_worktree_rebase_merge_files(&merged_paths,
11399 		    worktree, fileindex, parent_id, commit_id, repo,
11400 		    update_progress, &upa, check_cancelled, NULL);
11401 		if (error)
11402 			goto done;
11403 
11404 		print_merge_progress_stats(&upa);
11405 		if (upa.conflicts > 0 || upa.missing > 0 ||
11406 		    upa.not_deleted > 0 || upa.unversioned > 0) {
11407 			if (upa.conflicts > 0) {
11408 				error = show_rebase_merge_conflict(&qid->id,
11409 				    repo);
11410 				if (error)
11411 					goto done;
11412 			}
11413 			got_pathlist_free(&merged_paths, GOT_PATHLIST_FREE_PATH);
11414 			break;
11415 		}
11416 
11417 		error = rebase_commit(&merged_paths, worktree, fileindex,
11418 		    tmp_branch, committer, commit_id, 0, repo);
11419 		got_pathlist_free(&merged_paths, GOT_PATHLIST_FREE_PATH);
11420 		if (error)
11421 			goto done;
11422 	}
11423 
11424 	if (upa.conflicts > 0 || upa.missing > 0 ||
11425 	    upa.not_deleted > 0 || upa.unversioned > 0) {
11426 		error = got_worktree_rebase_postpone(worktree, fileindex);
11427 		if (error)
11428 			goto done;
11429 		if (upa.conflicts > 0 && upa.missing == 0 &&
11430 		    upa.not_deleted == 0 && upa.unversioned == 0) {
11431 			error = got_error_msg(GOT_ERR_CONFLICTS,
11432 			    "conflicts must be resolved before rebasing "
11433 			    "can continue");
11434 		} else if (upa.conflicts > 0) {
11435 			error = got_error_msg(GOT_ERR_CONFLICTS,
11436 			    "conflicts must be resolved before rebasing "
11437 			    "can continue; changes destined for some "
11438 			    "files were not yet merged and should be "
11439 			    "merged manually if required before the "
11440 			    "rebase operation is continued");
11441 		} else {
11442 			error = got_error_msg(GOT_ERR_CONFLICTS,
11443 			    "changes destined for some files were not "
11444 			    "yet merged and should be merged manually "
11445 			    "if required before the rebase operation "
11446 			    "is continued");
11447 		}
11448 	} else
11449 		error = rebase_complete(worktree, fileindex, branch,
11450 		    tmp_branch, repo, create_backup);
11451 done:
11452 	free(cwd);
11453 	free(committer);
11454 	free(gitconfig_path);
11455 	got_object_id_queue_free(&commits);
11456 	free(branch_head_commit_id);
11457 	free(resume_commit_id);
11458 	free(head_commit_id);
11459 	free(yca_id);
11460 	if (commit)
11461 		got_object_commit_close(commit);
11462 	if (branch)
11463 		got_ref_close(branch);
11464 	if (new_base_branch)
11465 		got_ref_close(new_base_branch);
11466 	if (tmp_branch)
11467 		got_ref_close(tmp_branch);
11468 	if (head_ref)
11469 		got_ref_close(head_ref);
11470 	if (worktree)
11471 		got_worktree_close(worktree);
11472 	if (repo) {
11473 		const struct got_error *close_err = got_repo_close(repo);
11474 		if (error == NULL)
11475 			error = close_err;
11476 	}
11477 	if (pack_fds) {
11478 		const struct got_error *pack_err =
11479 		    got_repo_pack_fds_close(pack_fds);
11480 		if (error == NULL)
11481 			error = pack_err;
11482 	}
11483 	return error;
11484 }
11485 
11486 __dead static void
11487 usage_histedit(void)
11488 {
11489 	fprintf(stderr, "usage: %s histedit [-aCcdeflmX] [-F histedit-script] "
11490 	    "[branch]\n", getprogname());
11491 	exit(1);
11492 }
11493 
11494 #define GOT_HISTEDIT_PICK 'p'
11495 #define GOT_HISTEDIT_EDIT 'e'
11496 #define GOT_HISTEDIT_FOLD 'f'
11497 #define GOT_HISTEDIT_DROP 'd'
11498 #define GOT_HISTEDIT_MESG 'm'
11499 
11500 static const struct got_histedit_cmd {
11501 	unsigned char code;
11502 	const char *name;
11503 	const char *desc;
11504 } got_histedit_cmds[] = {
11505 	{ GOT_HISTEDIT_PICK, "pick", "use commit" },
11506 	{ GOT_HISTEDIT_EDIT, "edit", "use commit but stop for amending" },
11507 	{ GOT_HISTEDIT_FOLD, "fold", "combine with next commit that will "
11508 	    "be used" },
11509 	{ GOT_HISTEDIT_DROP, "drop", "remove commit from history" },
11510 	{ GOT_HISTEDIT_MESG, "mesg",
11511 	    "single-line log message for commit above (open editor if empty)" },
11512 };
11513 
11514 struct got_histedit_list_entry {
11515 	TAILQ_ENTRY(got_histedit_list_entry) entry;
11516 	struct got_object_id *commit_id;
11517 	const struct got_histedit_cmd *cmd;
11518 	char *logmsg;
11519 };
11520 TAILQ_HEAD(got_histedit_list, got_histedit_list_entry);
11521 
11522 static const struct got_error *
11523 histedit_write_commit(struct got_object_id *commit_id, const char *cmdname,
11524     FILE *f, struct got_repository *repo)
11525 {
11526 	const struct got_error *err = NULL;
11527 	char *logmsg = NULL, *id_str = NULL;
11528 	struct got_commit_object *commit = NULL;
11529 	int n;
11530 
11531 	err = got_object_open_as_commit(&commit, repo, commit_id);
11532 	if (err)
11533 		goto done;
11534 
11535 	err = get_short_logmsg(&logmsg, 34, commit);
11536 	if (err)
11537 		goto done;
11538 
11539 	err = got_object_id_str(&id_str, commit_id);
11540 	if (err)
11541 		goto done;
11542 
11543 	n = fprintf(f, "%s %s %s\n", cmdname, id_str, logmsg);
11544 	if (n < 0)
11545 		err = got_ferror(f, GOT_ERR_IO);
11546 done:
11547 	if (commit)
11548 		got_object_commit_close(commit);
11549 	free(id_str);
11550 	free(logmsg);
11551 	return err;
11552 }
11553 
11554 static const struct got_error *
11555 histedit_write_commit_list(struct got_object_id_queue *commits,
11556     FILE *f, int edit_logmsg_only, int fold_only, int drop_only,
11557     int edit_only, struct got_repository *repo)
11558 {
11559 	const struct got_error *err = NULL;
11560 	struct got_object_qid *qid;
11561 	const char *histedit_cmd = NULL;
11562 
11563 	if (STAILQ_EMPTY(commits))
11564 		return got_error(GOT_ERR_EMPTY_HISTEDIT);
11565 
11566 	STAILQ_FOREACH(qid, commits, entry) {
11567 		histedit_cmd = got_histedit_cmds[0].name;
11568 		if (drop_only)
11569 			histedit_cmd = "drop";
11570 		else if (edit_only)
11571 			histedit_cmd = "edit";
11572 		else if (fold_only && STAILQ_NEXT(qid, entry) != NULL)
11573 			histedit_cmd = "fold";
11574 		err = histedit_write_commit(&qid->id, histedit_cmd, f, repo);
11575 		if (err)
11576 			break;
11577 		if (edit_logmsg_only) {
11578 			int n = fprintf(f, "%c\n", GOT_HISTEDIT_MESG);
11579 			if (n < 0) {
11580 				err = got_ferror(f, GOT_ERR_IO);
11581 				break;
11582 			}
11583 		}
11584 	}
11585 
11586 	return err;
11587 }
11588 
11589 static const struct got_error *
11590 write_cmd_list(FILE *f, const char *branch_name,
11591     struct got_object_id_queue *commits)
11592 {
11593 	const struct got_error *err = NULL;
11594 	size_t i;
11595 	int n;
11596 	char *id_str;
11597 	struct got_object_qid *qid;
11598 
11599 	qid = STAILQ_FIRST(commits);
11600 	err = got_object_id_str(&id_str, &qid->id);
11601 	if (err)
11602 		return err;
11603 
11604 	n = fprintf(f,
11605 	    "# Editing the history of branch '%s' starting at\n"
11606 	    "# commit %s\n"
11607 	    "# Commits will be processed in order from top to "
11608 	    "bottom of this file.\n", branch_name, id_str);
11609 	if (n < 0) {
11610 		err = got_ferror(f, GOT_ERR_IO);
11611 		goto done;
11612 	}
11613 
11614 	n = fprintf(f, "# Available histedit commands:\n");
11615 	if (n < 0) {
11616 		err = got_ferror(f, GOT_ERR_IO);
11617 		goto done;
11618 	}
11619 
11620 	for (i = 0; i < nitems(got_histedit_cmds); i++) {
11621 		const struct got_histedit_cmd *cmd = &got_histedit_cmds[i];
11622 		n = fprintf(f, "#   %s (%c): %s\n", cmd->name, cmd->code,
11623 		    cmd->desc);
11624 		if (n < 0) {
11625 			err = got_ferror(f, GOT_ERR_IO);
11626 			break;
11627 		}
11628 	}
11629 done:
11630 	free(id_str);
11631 	return err;
11632 }
11633 
11634 static const struct got_error *
11635 histedit_syntax_error(int lineno)
11636 {
11637 	static char msg[42];
11638 	int ret;
11639 
11640 	ret = snprintf(msg, sizeof(msg), "histedit syntax error on line %d",
11641 	    lineno);
11642 	if (ret < 0 || (size_t)ret >= sizeof(msg))
11643 		return got_error(GOT_ERR_HISTEDIT_SYNTAX);
11644 
11645 	return got_error_msg(GOT_ERR_HISTEDIT_SYNTAX, msg);
11646 }
11647 
11648 static const struct got_error *
11649 append_folded_commit_msg(char **new_msg, struct got_histedit_list_entry *hle,
11650     char *logmsg, struct got_repository *repo)
11651 {
11652 	const struct got_error *err;
11653 	struct got_commit_object *folded_commit = NULL;
11654 	char *id_str, *folded_logmsg = NULL;
11655 
11656 	err = got_object_id_str(&id_str, hle->commit_id);
11657 	if (err)
11658 		return err;
11659 
11660 	err = got_object_open_as_commit(&folded_commit, repo, hle->commit_id);
11661 	if (err)
11662 		goto done;
11663 
11664 	err = got_object_commit_get_logmsg(&folded_logmsg, folded_commit);
11665 	if (err)
11666 		goto done;
11667 	if (asprintf(new_msg, "%s%s# log message of folded commit %s: %s",
11668 	    logmsg ? logmsg : "", logmsg ? "\n" : "", id_str,
11669 	    folded_logmsg) == -1) {
11670 		err = got_error_from_errno("asprintf");
11671 	}
11672 done:
11673 	if (folded_commit)
11674 		got_object_commit_close(folded_commit);
11675 	free(id_str);
11676 	free(folded_logmsg);
11677 	return err;
11678 }
11679 
11680 static struct got_histedit_list_entry *
11681 get_folded_commits(struct got_histedit_list_entry *hle)
11682 {
11683 	struct got_histedit_list_entry *prev, *folded = NULL;
11684 
11685 	prev = TAILQ_PREV(hle, got_histedit_list, entry);
11686 	while (prev && (prev->cmd->code == GOT_HISTEDIT_FOLD ||
11687 	    prev->cmd->code == GOT_HISTEDIT_DROP)) {
11688 		if (prev->cmd->code == GOT_HISTEDIT_FOLD)
11689 			folded = prev;
11690 		prev = TAILQ_PREV(prev, got_histedit_list, entry);
11691 	}
11692 
11693 	return folded;
11694 }
11695 
11696 static const struct got_error *
11697 histedit_edit_logmsg(struct got_histedit_list_entry *hle,
11698     struct got_repository *repo)
11699 {
11700 	char *logmsg_path = NULL, *id_str = NULL, *orig_logmsg = NULL;
11701 	char *logmsg = NULL, *new_msg = NULL, *editor = NULL;
11702 	const struct got_error *err = NULL;
11703 	struct got_commit_object *commit = NULL;
11704 	int logmsg_len;
11705 	int fd = -1;
11706 	struct got_histedit_list_entry *folded = NULL;
11707 
11708 	err = got_object_open_as_commit(&commit, repo, hle->commit_id);
11709 	if (err)
11710 		return err;
11711 
11712 	folded = get_folded_commits(hle);
11713 	if (folded) {
11714 		while (folded != hle) {
11715 			if (folded->cmd->code == GOT_HISTEDIT_DROP) {
11716 				folded = TAILQ_NEXT(folded, entry);
11717 				continue;
11718 			}
11719 			err = append_folded_commit_msg(&new_msg, folded,
11720 			    logmsg, repo);
11721 			if (err)
11722 				goto done;
11723 			free(logmsg);
11724 			logmsg = new_msg;
11725 			folded = TAILQ_NEXT(folded, entry);
11726 		}
11727 	}
11728 
11729 	err = got_object_id_str(&id_str, hle->commit_id);
11730 	if (err)
11731 		goto done;
11732 	err = got_object_commit_get_logmsg(&orig_logmsg, commit);
11733 	if (err)
11734 		goto done;
11735 	logmsg_len = asprintf(&new_msg,
11736 	    "%s\n# original log message of commit %s: %s",
11737 	    logmsg ? logmsg : "", id_str, orig_logmsg);
11738 	if (logmsg_len == -1) {
11739 		err = got_error_from_errno("asprintf");
11740 		goto done;
11741 	}
11742 	free(logmsg);
11743 	logmsg = new_msg;
11744 
11745 	err = got_object_id_str(&id_str, hle->commit_id);
11746 	if (err)
11747 		goto done;
11748 
11749 	err = got_opentemp_named_fd(&logmsg_path, &fd,
11750 	    GOT_TMPDIR_STR "/got-logmsg", "");
11751 	if (err)
11752 		goto done;
11753 
11754 	if (write(fd, logmsg, logmsg_len) == -1) {
11755 		err = got_error_from_errno2("write", logmsg_path);
11756 		goto done;
11757 	}
11758 	if (close(fd) == -1) {
11759 		err = got_error_from_errno2("close", logmsg_path);
11760 		goto done;
11761 	}
11762 	fd = -1;
11763 
11764 	err = get_editor(&editor);
11765 	if (err)
11766 		goto done;
11767 
11768 	err = edit_logmsg(&hle->logmsg, editor, logmsg_path, logmsg,
11769 	    logmsg_len, 0);
11770 	if (err) {
11771 		if (err->code != GOT_ERR_COMMIT_MSG_EMPTY)
11772 			goto done;
11773 		err = NULL;
11774 		hle->logmsg = strdup(new_msg);
11775 		if (hle->logmsg == NULL)
11776 			err = got_error_from_errno("strdup");
11777 	}
11778 done:
11779 	if (fd != -1 && close(fd) == -1 && err == NULL)
11780 		err = got_error_from_errno2("close", logmsg_path);
11781 	if (logmsg_path && unlink(logmsg_path) != 0 && err == NULL)
11782 		err = got_error_from_errno2("unlink", logmsg_path);
11783 	free(logmsg_path);
11784 	free(logmsg);
11785 	free(orig_logmsg);
11786 	free(editor);
11787 	if (commit)
11788 		got_object_commit_close(commit);
11789 	return err;
11790 }
11791 
11792 static const struct got_error *
11793 histedit_parse_list(struct got_histedit_list *histedit_cmds,
11794     FILE *f, struct got_repository *repo)
11795 {
11796 	const struct got_error *err = NULL;
11797 	char *line = NULL, *p, *end;
11798 	size_t i, linesize = 0;
11799 	ssize_t linelen;
11800 	int lineno = 0, lastcmd = -1;
11801 	const struct got_histedit_cmd *cmd;
11802 	struct got_object_id *commit_id = NULL;
11803 	struct got_histedit_list_entry *hle = NULL;
11804 
11805 	for (;;) {
11806 		linelen = getline(&line, &linesize, f);
11807 		if (linelen == -1) {
11808 			const struct got_error *getline_err;
11809 			if (feof(f))
11810 				break;
11811 			getline_err = got_error_from_errno("getline");
11812 			err = got_ferror(f, getline_err->code);
11813 			break;
11814 		}
11815 		lineno++;
11816 		p = line;
11817 		while (isspace((unsigned char)p[0]))
11818 			p++;
11819 		if (p[0] == '#' || p[0] == '\0')
11820 			continue;
11821 		cmd = NULL;
11822 		for (i = 0; i < nitems(got_histedit_cmds); i++) {
11823 			cmd = &got_histedit_cmds[i];
11824 			if (strncmp(cmd->name, p, strlen(cmd->name)) == 0 &&
11825 			    isspace((unsigned char)p[strlen(cmd->name)])) {
11826 				p += strlen(cmd->name);
11827 				break;
11828 			}
11829 			if (p[0] == cmd->code && isspace((unsigned char)p[1])) {
11830 				p++;
11831 				break;
11832 			}
11833 		}
11834 		if (i == nitems(got_histedit_cmds)) {
11835 			err = histedit_syntax_error(lineno);
11836 			break;
11837 		}
11838 		while (isspace((unsigned char)p[0]))
11839 			p++;
11840 		if (cmd->code == GOT_HISTEDIT_MESG) {
11841 			if (lastcmd != GOT_HISTEDIT_PICK &&
11842 			    lastcmd != GOT_HISTEDIT_EDIT) {
11843 				err = got_error(GOT_ERR_HISTEDIT_CMD);
11844 				break;
11845 			}
11846 			if (p[0] == '\0') {
11847 				err = histedit_edit_logmsg(hle, repo);
11848 				if (err)
11849 					break;
11850 			} else {
11851 				hle->logmsg = strdup(p);
11852 				if (hle->logmsg == NULL) {
11853 					err = got_error_from_errno("strdup");
11854 					break;
11855 				}
11856 			}
11857 			lastcmd = cmd->code;
11858 			continue;
11859 		} else {
11860 			end = p;
11861 			while (end[0] && !isspace((unsigned char)end[0]))
11862 				end++;
11863 			*end = '\0';
11864 
11865 			err = got_object_resolve_id_str(&commit_id, repo, p);
11866 			if (err) {
11867 				/* override error code */
11868 				err = histedit_syntax_error(lineno);
11869 				break;
11870 			}
11871 		}
11872 		hle = malloc(sizeof(*hle));
11873 		if (hle == NULL) {
11874 			err = got_error_from_errno("malloc");
11875 			break;
11876 		}
11877 		hle->cmd = cmd;
11878 		hle->commit_id = commit_id;
11879 		hle->logmsg = NULL;
11880 		commit_id = NULL;
11881 		TAILQ_INSERT_TAIL(histedit_cmds, hle, entry);
11882 		lastcmd = cmd->code;
11883 	}
11884 
11885 	free(line);
11886 	free(commit_id);
11887 	return err;
11888 }
11889 
11890 static const struct got_error *
11891 histedit_check_script(struct got_histedit_list *histedit_cmds,
11892     struct got_object_id_queue *commits, struct got_repository *repo)
11893 {
11894 	const struct got_error *err = NULL;
11895 	struct got_object_qid *qid;
11896 	struct got_histedit_list_entry *hle;
11897 	static char msg[92];
11898 	char *id_str;
11899 
11900 	if (TAILQ_EMPTY(histedit_cmds))
11901 		return got_error_msg(GOT_ERR_EMPTY_HISTEDIT,
11902 		    "histedit script contains no commands");
11903 	if (STAILQ_EMPTY(commits))
11904 		return got_error(GOT_ERR_EMPTY_HISTEDIT);
11905 
11906 	TAILQ_FOREACH(hle, histedit_cmds, entry) {
11907 		struct got_histedit_list_entry *hle2;
11908 		TAILQ_FOREACH(hle2, histedit_cmds, entry) {
11909 			if (hle == hle2)
11910 				continue;
11911 			if (got_object_id_cmp(hle->commit_id,
11912 			    hle2->commit_id) != 0)
11913 				continue;
11914 			err = got_object_id_str(&id_str, hle->commit_id);
11915 			if (err)
11916 				return err;
11917 			snprintf(msg, sizeof(msg), "commit %s is listed "
11918 			    "more than once in histedit script", id_str);
11919 			free(id_str);
11920 			return got_error_msg(GOT_ERR_HISTEDIT_CMD, msg);
11921 		}
11922 	}
11923 
11924 	STAILQ_FOREACH(qid, commits, entry) {
11925 		TAILQ_FOREACH(hle, histedit_cmds, entry) {
11926 			if (got_object_id_cmp(&qid->id, hle->commit_id) == 0)
11927 				break;
11928 		}
11929 		if (hle == NULL) {
11930 			err = got_object_id_str(&id_str, &qid->id);
11931 			if (err)
11932 				return err;
11933 			snprintf(msg, sizeof(msg),
11934 			    "commit %s missing from histedit script", id_str);
11935 			free(id_str);
11936 			return got_error_msg(GOT_ERR_HISTEDIT_CMD, msg);
11937 		}
11938 	}
11939 
11940 	hle = TAILQ_LAST(histedit_cmds, got_histedit_list);
11941 	if (hle && hle->cmd->code == GOT_HISTEDIT_FOLD)
11942 		return got_error_msg(GOT_ERR_HISTEDIT_CMD,
11943 		    "last commit in histedit script cannot be folded");
11944 
11945 	return NULL;
11946 }
11947 
11948 static const struct got_error *
11949 histedit_run_editor(struct got_histedit_list *histedit_cmds,
11950     const char *path, struct got_object_id_queue *commits,
11951     struct got_repository *repo)
11952 {
11953 	const struct got_error *err = NULL;
11954 	char *editor;
11955 	FILE *f = NULL;
11956 
11957 	err = get_editor(&editor);
11958 	if (err)
11959 		return err;
11960 
11961 	if (spawn_editor(editor, path) == -1) {
11962 		err = got_error_from_errno("failed spawning editor");
11963 		goto done;
11964 	}
11965 
11966 	f = fopen(path, "re");
11967 	if (f == NULL) {
11968 		err = got_error_from_errno("fopen");
11969 		goto done;
11970 	}
11971 	err = histedit_parse_list(histedit_cmds, f, repo);
11972 	if (err)
11973 		goto done;
11974 
11975 	err = histedit_check_script(histedit_cmds, commits, repo);
11976 done:
11977 	if (f && fclose(f) == EOF && err == NULL)
11978 		err = got_error_from_errno("fclose");
11979 	free(editor);
11980 	return err;
11981 }
11982 
11983 static const struct got_error *
11984 histedit_edit_list_retry(struct got_histedit_list *, const struct got_error *,
11985     struct got_object_id_queue *, const char *, const char *,
11986     struct got_repository *);
11987 
11988 static const struct got_error *
11989 histedit_edit_script(struct got_histedit_list *histedit_cmds,
11990     struct got_object_id_queue *commits, const char *branch_name,
11991     int edit_logmsg_only, int fold_only, int drop_only, int edit_only,
11992     struct got_repository *repo)
11993 {
11994 	const struct got_error *err;
11995 	FILE *f = NULL;
11996 	char *path = NULL;
11997 
11998 	err = got_opentemp_named(&path, &f, "got-histedit", "");
11999 	if (err)
12000 		return err;
12001 
12002 	err = write_cmd_list(f, branch_name, commits);
12003 	if (err)
12004 		goto done;
12005 
12006 	err = histedit_write_commit_list(commits, f, edit_logmsg_only,
12007 	    fold_only, drop_only, edit_only, repo);
12008 	if (err)
12009 		goto done;
12010 
12011 	if (drop_only || edit_logmsg_only || fold_only || edit_only) {
12012 		rewind(f);
12013 		err = histedit_parse_list(histedit_cmds, f, repo);
12014 	} else {
12015 		if (fclose(f) == EOF) {
12016 			err = got_error_from_errno("fclose");
12017 			goto done;
12018 		}
12019 		f = NULL;
12020 		err = histedit_run_editor(histedit_cmds, path, commits, repo);
12021 		if (err) {
12022 			if (err->code != GOT_ERR_HISTEDIT_SYNTAX &&
12023 			    err->code != GOT_ERR_HISTEDIT_CMD)
12024 				goto done;
12025 			err = histedit_edit_list_retry(histedit_cmds, err,
12026 			    commits, path, branch_name, repo);
12027 		}
12028 	}
12029 done:
12030 	if (f && fclose(f) == EOF && err == NULL)
12031 		err = got_error_from_errno("fclose");
12032 	if (path && unlink(path) != 0 && err == NULL)
12033 		err = got_error_from_errno2("unlink", path);
12034 	free(path);
12035 	return err;
12036 }
12037 
12038 static const struct got_error *
12039 histedit_save_list(struct got_histedit_list *histedit_cmds,
12040     struct got_worktree *worktree, struct got_repository *repo)
12041 {
12042 	const struct got_error *err = NULL;
12043 	char *path = NULL;
12044 	FILE *f = NULL;
12045 	struct got_histedit_list_entry *hle;
12046 	struct got_commit_object *commit = NULL;
12047 
12048 	err = got_worktree_get_histedit_script_path(&path, worktree);
12049 	if (err)
12050 		return err;
12051 
12052 	f = fopen(path, "we");
12053 	if (f == NULL) {
12054 		err = got_error_from_errno2("fopen", path);
12055 		goto done;
12056 	}
12057 	TAILQ_FOREACH(hle, histedit_cmds, entry) {
12058 		err = histedit_write_commit(hle->commit_id, hle->cmd->name, f,
12059 		    repo);
12060 		if (err)
12061 			break;
12062 
12063 		if (hle->logmsg) {
12064 			int n = fprintf(f, "%c %s\n",
12065 			    GOT_HISTEDIT_MESG, hle->logmsg);
12066 			if (n < 0) {
12067 				err = got_ferror(f, GOT_ERR_IO);
12068 				break;
12069 			}
12070 		}
12071 	}
12072 done:
12073 	if (f && fclose(f) == EOF && err == NULL)
12074 		err = got_error_from_errno("fclose");
12075 	free(path);
12076 	if (commit)
12077 		got_object_commit_close(commit);
12078 	return err;
12079 }
12080 
12081 static void
12082 histedit_free_list(struct got_histedit_list *histedit_cmds)
12083 {
12084 	struct got_histedit_list_entry *hle;
12085 
12086 	while ((hle = TAILQ_FIRST(histedit_cmds))) {
12087 		TAILQ_REMOVE(histedit_cmds, hle, entry);
12088 		free(hle);
12089 	}
12090 }
12091 
12092 static const struct got_error *
12093 histedit_load_list(struct got_histedit_list *histedit_cmds,
12094     const char *path, struct got_repository *repo)
12095 {
12096 	const struct got_error *err = NULL;
12097 	FILE *f = NULL;
12098 
12099 	f = fopen(path, "re");
12100 	if (f == NULL) {
12101 		err = got_error_from_errno2("fopen", path);
12102 		goto done;
12103 	}
12104 
12105 	err = histedit_parse_list(histedit_cmds, f, repo);
12106 done:
12107 	if (f && fclose(f) == EOF && err == NULL)
12108 		err = got_error_from_errno("fclose");
12109 	return err;
12110 }
12111 
12112 static const struct got_error *
12113 histedit_edit_list_retry(struct got_histedit_list *histedit_cmds,
12114     const struct got_error *edit_err, struct got_object_id_queue *commits,
12115     const char *path, const char *branch_name, struct got_repository *repo)
12116 {
12117 	const struct got_error *err = NULL, *prev_err = edit_err;
12118 	int resp = ' ';
12119 
12120 	while (resp != 'c' && resp != 'r' && resp != 'a') {
12121 		printf("%s: %s\n(c)ontinue editing, (r)estart editing, "
12122 		    "or (a)bort: ", getprogname(), prev_err->msg);
12123 		resp = getchar();
12124 		if (resp == '\n')
12125 			resp = getchar();
12126 		if (resp == 'c') {
12127 			histedit_free_list(histedit_cmds);
12128 			err = histedit_run_editor(histedit_cmds, path, commits,
12129 			    repo);
12130 			if (err) {
12131 				if (err->code != GOT_ERR_HISTEDIT_SYNTAX &&
12132 				    err->code != GOT_ERR_HISTEDIT_CMD)
12133 					break;
12134 				prev_err = err;
12135 				resp = ' ';
12136 				continue;
12137 			}
12138 			break;
12139 		} else if (resp == 'r') {
12140 			histedit_free_list(histedit_cmds);
12141 			err = histedit_edit_script(histedit_cmds,
12142 			    commits, branch_name, 0, 0, 0, 0, repo);
12143 			if (err) {
12144 				if (err->code != GOT_ERR_HISTEDIT_SYNTAX &&
12145 				    err->code != GOT_ERR_HISTEDIT_CMD)
12146 					break;
12147 				prev_err = err;
12148 				resp = ' ';
12149 				continue;
12150 			}
12151 			break;
12152 		} else if (resp == 'a') {
12153 			err = got_error(GOT_ERR_HISTEDIT_CANCEL);
12154 			break;
12155 		} else
12156 			printf("invalid response '%c'\n", resp);
12157 	}
12158 
12159 	return err;
12160 }
12161 
12162 static const struct got_error *
12163 histedit_complete(struct got_worktree *worktree,
12164     struct got_fileindex *fileindex, struct got_reference *tmp_branch,
12165     struct got_reference *branch, struct got_repository *repo)
12166 {
12167 	printf("Switching work tree to %s\n",
12168 	    got_ref_get_symref_target(branch));
12169 	return got_worktree_histedit_complete(worktree, fileindex, tmp_branch,
12170 	    branch, repo);
12171 }
12172 
12173 static const struct got_error *
12174 show_histedit_progress(struct got_commit_object *commit,
12175     struct got_histedit_list_entry *hle, struct got_object_id *new_id)
12176 {
12177 	const struct got_error *err;
12178 	char *old_id_str = NULL, *new_id_str = NULL, *logmsg = NULL;
12179 
12180 	err = got_object_id_str(&old_id_str, hle->commit_id);
12181 	if (err)
12182 		goto done;
12183 
12184 	if (new_id) {
12185 		err = got_object_id_str(&new_id_str, new_id);
12186 		if (err)
12187 			goto done;
12188 	}
12189 
12190 	old_id_str[12] = '\0';
12191 	if (new_id_str)
12192 		new_id_str[12] = '\0';
12193 
12194 	if (hle->logmsg) {
12195 		logmsg = strdup(hle->logmsg);
12196 		if (logmsg == NULL) {
12197 			err = got_error_from_errno("strdup");
12198 			goto done;
12199 		}
12200 		trim_logmsg(logmsg, 42);
12201 	} else {
12202 		err = get_short_logmsg(&logmsg, 42, commit);
12203 		if (err)
12204 			goto done;
12205 	}
12206 
12207 	switch (hle->cmd->code) {
12208 	case GOT_HISTEDIT_PICK:
12209 	case GOT_HISTEDIT_EDIT:
12210 		printf("%s -> %s: %s\n", old_id_str,
12211 		    new_id_str ? new_id_str : "no-op change", logmsg);
12212 		break;
12213 	case GOT_HISTEDIT_DROP:
12214 	case GOT_HISTEDIT_FOLD:
12215 		printf("%s ->  %s commit: %s\n", old_id_str, hle->cmd->name,
12216 		    logmsg);
12217 		break;
12218 	default:
12219 		break;
12220 	}
12221 done:
12222 	free(old_id_str);
12223 	free(new_id_str);
12224 	return err;
12225 }
12226 
12227 static const struct got_error *
12228 histedit_commit(struct got_pathlist_head *merged_paths,
12229     struct got_worktree *worktree, struct got_fileindex *fileindex,
12230     struct got_reference *tmp_branch, struct got_histedit_list_entry *hle,
12231     const char *committer, int allow_conflict, struct got_repository *repo)
12232 {
12233 	const struct got_error *err;
12234 	struct got_commit_object *commit;
12235 	struct got_object_id *new_commit_id;
12236 
12237 	if ((hle->cmd->code == GOT_HISTEDIT_EDIT || get_folded_commits(hle))
12238 	    && hle->logmsg == NULL) {
12239 		err = histedit_edit_logmsg(hle, repo);
12240 		if (err)
12241 			return err;
12242 	}
12243 
12244 	err = got_object_open_as_commit(&commit, repo, hle->commit_id);
12245 	if (err)
12246 		return err;
12247 
12248 	err = got_worktree_histedit_commit(&new_commit_id, merged_paths,
12249 	    worktree, fileindex, tmp_branch, committer, commit, hle->commit_id,
12250 	    hle->logmsg, allow_conflict, repo);
12251 	if (err) {
12252 		if (err->code != GOT_ERR_COMMIT_NO_CHANGES)
12253 			goto done;
12254 		err = show_histedit_progress(commit, hle, NULL);
12255 	} else {
12256 		err = show_histedit_progress(commit, hle, new_commit_id);
12257 		free(new_commit_id);
12258 	}
12259 done:
12260 	got_object_commit_close(commit);
12261 	return err;
12262 }
12263 
12264 static const struct got_error *
12265 histedit_skip_commit(struct got_histedit_list_entry *hle,
12266     struct got_worktree *worktree, struct got_repository *repo)
12267 {
12268 	const struct got_error *error;
12269 	struct got_commit_object *commit;
12270 
12271 	error = got_worktree_histedit_skip_commit(worktree, hle->commit_id,
12272 	    repo);
12273 	if (error)
12274 		return error;
12275 
12276 	error = got_object_open_as_commit(&commit, repo, hle->commit_id);
12277 	if (error)
12278 		return error;
12279 
12280 	error = show_histedit_progress(commit, hle, NULL);
12281 	got_object_commit_close(commit);
12282 	return error;
12283 }
12284 
12285 static const struct got_error *
12286 check_local_changes(void *arg, unsigned char status,
12287     unsigned char staged_status, const char *path,
12288     struct got_object_id *blob_id, struct got_object_id *staged_blob_id,
12289     struct got_object_id *commit_id, int dirfd, const char *de_name)
12290 {
12291 	int *have_local_changes = arg;
12292 
12293 	switch (status) {
12294 	case GOT_STATUS_ADD:
12295 	case GOT_STATUS_DELETE:
12296 	case GOT_STATUS_MODIFY:
12297 	case GOT_STATUS_CONFLICT:
12298 		*have_local_changes = 1;
12299 		return got_error(GOT_ERR_CANCELLED);
12300 	default:
12301 		break;
12302 	}
12303 
12304 	switch (staged_status) {
12305 	case GOT_STATUS_ADD:
12306 	case GOT_STATUS_DELETE:
12307 	case GOT_STATUS_MODIFY:
12308 		*have_local_changes = 1;
12309 		return got_error(GOT_ERR_CANCELLED);
12310 	default:
12311 		break;
12312 	}
12313 
12314 	return NULL;
12315 }
12316 
12317 static const struct got_error *
12318 cmd_histedit(int argc, char *argv[])
12319 {
12320 	const struct got_error *error = NULL;
12321 	struct got_worktree *worktree = NULL;
12322 	struct got_fileindex *fileindex = NULL;
12323 	struct got_repository *repo = NULL;
12324 	char *cwd = NULL, *committer = NULL, *gitconfig_path = NULL;
12325 	struct got_reference *branch = NULL;
12326 	struct got_reference *tmp_branch = NULL;
12327 	struct got_object_id *resume_commit_id = NULL;
12328 	struct got_object_id *base_commit_id = NULL;
12329 	struct got_object_id *head_commit_id = NULL;
12330 	struct got_commit_object *commit = NULL;
12331 	int ch, rebase_in_progress = 0, merge_in_progress = 0;
12332 	struct got_update_progress_arg upa;
12333 	int edit_in_progress = 0, abort_edit = 0, continue_edit = 0;
12334 	int drop_only = 0, edit_logmsg_only = 0, fold_only = 0, edit_only = 0;
12335 	int allow_conflict = 0, list_backups = 0, delete_backups = 0;
12336 	const char *edit_script_path = NULL;
12337 	struct got_object_id_queue commits;
12338 	struct got_pathlist_head merged_paths;
12339 	const struct got_object_id_queue *parent_ids;
12340 	struct got_object_qid *pid;
12341 	struct got_histedit_list histedit_cmds;
12342 	struct got_histedit_list_entry *hle;
12343 	int *pack_fds = NULL;
12344 
12345 	STAILQ_INIT(&commits);
12346 	TAILQ_INIT(&histedit_cmds);
12347 	TAILQ_INIT(&merged_paths);
12348 	memset(&upa, 0, sizeof(upa));
12349 
12350 #ifndef PROFILE
12351 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
12352 	    "unveil", NULL) == -1)
12353 		err(1, "pledge");
12354 #endif
12355 
12356 	while ((ch = getopt(argc, argv, "aCcdeF:flmX")) != -1) {
12357 		switch (ch) {
12358 		case 'a':
12359 			abort_edit = 1;
12360 			break;
12361 		case 'C':
12362 			allow_conflict = 1;
12363 			break;
12364 		case 'c':
12365 			continue_edit = 1;
12366 			break;
12367 		case 'd':
12368 			drop_only = 1;
12369 			break;
12370 		case 'e':
12371 			edit_only = 1;
12372 			break;
12373 		case 'F':
12374 			edit_script_path = optarg;
12375 			break;
12376 		case 'f':
12377 			fold_only = 1;
12378 			break;
12379 		case 'l':
12380 			list_backups = 1;
12381 			break;
12382 		case 'm':
12383 			edit_logmsg_only = 1;
12384 			break;
12385 		case 'X':
12386 			delete_backups = 1;
12387 			break;
12388 		default:
12389 			usage_histedit();
12390 			/* NOTREACHED */
12391 		}
12392 	}
12393 
12394 	argc -= optind;
12395 	argv += optind;
12396 
12397 	if (abort_edit && allow_conflict)
12398 		option_conflict('a', 'C');
12399 	if (abort_edit && continue_edit)
12400 		option_conflict('a', 'c');
12401 	if (edit_script_path && allow_conflict)
12402 		option_conflict('F', 'C');
12403 	if (edit_script_path && edit_logmsg_only)
12404 		option_conflict('F', 'm');
12405 	if (abort_edit && edit_logmsg_only)
12406 		option_conflict('a', 'm');
12407 	if (edit_logmsg_only && allow_conflict)
12408 		option_conflict('m', 'C');
12409 	if (continue_edit && edit_logmsg_only)
12410 		option_conflict('c', 'm');
12411 	if (abort_edit && fold_only)
12412 		option_conflict('a', 'f');
12413 	if (fold_only && allow_conflict)
12414 		option_conflict('f', 'C');
12415 	if (continue_edit && fold_only)
12416 		option_conflict('c', 'f');
12417 	if (fold_only && edit_logmsg_only)
12418 		option_conflict('f', 'm');
12419 	if (edit_script_path && fold_only)
12420 		option_conflict('F', 'f');
12421 	if (abort_edit && edit_only)
12422 		option_conflict('a', 'e');
12423 	if (continue_edit && edit_only)
12424 		option_conflict('c', 'e');
12425 	if (edit_only && edit_logmsg_only)
12426 		option_conflict('e', 'm');
12427 	if (edit_script_path && edit_only)
12428 		option_conflict('F', 'e');
12429 	if (fold_only && edit_only)
12430 		option_conflict('f', 'e');
12431 	if (drop_only && abort_edit)
12432 		option_conflict('d', 'a');
12433 	if (drop_only && allow_conflict)
12434 		option_conflict('d', 'C');
12435 	if (drop_only && continue_edit)
12436 		option_conflict('d', 'c');
12437 	if (drop_only && edit_logmsg_only)
12438 		option_conflict('d', 'm');
12439 	if (drop_only && edit_only)
12440 		option_conflict('d', 'e');
12441 	if (drop_only && edit_script_path)
12442 		option_conflict('d', 'F');
12443 	if (drop_only && fold_only)
12444 		option_conflict('d', 'f');
12445 	if (list_backups) {
12446 		if (abort_edit)
12447 			option_conflict('l', 'a');
12448 		if (allow_conflict)
12449 			option_conflict('l', 'C');
12450 		if (continue_edit)
12451 			option_conflict('l', 'c');
12452 		if (edit_script_path)
12453 			option_conflict('l', 'F');
12454 		if (edit_logmsg_only)
12455 			option_conflict('l', 'm');
12456 		if (drop_only)
12457 			option_conflict('l', 'd');
12458 		if (fold_only)
12459 			option_conflict('l', 'f');
12460 		if (edit_only)
12461 			option_conflict('l', 'e');
12462 		if (delete_backups)
12463 			option_conflict('l', 'X');
12464 		if (argc != 0 && argc != 1)
12465 			usage_histedit();
12466 	} else if (delete_backups) {
12467 		if (abort_edit)
12468 			option_conflict('X', 'a');
12469 		if (allow_conflict)
12470 			option_conflict('X', 'C');
12471 		if (continue_edit)
12472 			option_conflict('X', 'c');
12473 		if (drop_only)
12474 			option_conflict('X', 'd');
12475 		if (edit_script_path)
12476 			option_conflict('X', 'F');
12477 		if (edit_logmsg_only)
12478 			option_conflict('X', 'm');
12479 		if (fold_only)
12480 			option_conflict('X', 'f');
12481 		if (edit_only)
12482 			option_conflict('X', 'e');
12483 		if (list_backups)
12484 			option_conflict('X', 'l');
12485 		if (argc != 0 && argc != 1)
12486 			usage_histedit();
12487 	} else if (allow_conflict && !continue_edit)
12488 		errx(1, "-C option requires -c");
12489 	else if (argc != 0)
12490 		usage_histedit();
12491 
12492 	/*
12493 	 * This command cannot apply unveil(2) in all cases because the
12494 	 * user may choose to run an editor to edit the histedit script
12495 	 * and to edit individual commit log messages.
12496 	 * unveil(2) traverses exec(2); if an editor is used we have to
12497 	 * apply unveil after edit script and log messages have been written.
12498 	 * XXX TODO: Make use of unveil(2) where possible.
12499 	 */
12500 
12501 	cwd = getcwd(NULL, 0);
12502 	if (cwd == NULL) {
12503 		error = got_error_from_errno("getcwd");
12504 		goto done;
12505 	}
12506 
12507 	error = got_repo_pack_fds_open(&pack_fds);
12508 	if (error != NULL)
12509 		goto done;
12510 
12511 	error = got_worktree_open(&worktree, cwd);
12512 	if (error) {
12513 		if (list_backups || delete_backups) {
12514 			if (error->code != GOT_ERR_NOT_WORKTREE)
12515 				goto done;
12516 		} else {
12517 			if (error->code == GOT_ERR_NOT_WORKTREE)
12518 				error = wrap_not_worktree_error(error,
12519 				    "histedit", cwd);
12520 			goto done;
12521 		}
12522 	}
12523 
12524 	if (list_backups || delete_backups) {
12525 		error = got_repo_open(&repo,
12526 		    worktree ? got_worktree_get_repo_path(worktree) : cwd,
12527 		    NULL, pack_fds);
12528 		if (error != NULL)
12529 			goto done;
12530 		error = apply_unveil(got_repo_get_path(repo), 0,
12531 		    worktree ? got_worktree_get_root_path(worktree) : NULL);
12532 		if (error)
12533 			goto done;
12534 		error = process_backup_refs(
12535 		    GOT_WORKTREE_HISTEDIT_BACKUP_REF_PREFIX,
12536 		    argc == 1 ? argv[0] : NULL, delete_backups, repo);
12537 		goto done; /* nothing else to do */
12538 	}
12539 
12540 	error = get_gitconfig_path(&gitconfig_path);
12541 	if (error)
12542 		goto done;
12543 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
12544 	    gitconfig_path, pack_fds);
12545 	if (error != NULL)
12546 		goto done;
12547 
12548 	if (worktree != NULL && !list_backups && !delete_backups) {
12549 		error = worktree_has_logmsg_ref("histedit", worktree, repo);
12550 		if (error)
12551 			goto done;
12552 	}
12553 
12554 	error = got_worktree_rebase_in_progress(&rebase_in_progress, worktree);
12555 	if (error)
12556 		goto done;
12557 	if (rebase_in_progress) {
12558 		error = got_error(GOT_ERR_REBASING);
12559 		goto done;
12560 	}
12561 
12562 	error = got_worktree_merge_in_progress(&merge_in_progress, worktree,
12563 	    repo);
12564 	if (error)
12565 		goto done;
12566 	if (merge_in_progress) {
12567 		error = got_error(GOT_ERR_MERGE_BUSY);
12568 		goto done;
12569 	}
12570 
12571 	error = got_worktree_histedit_in_progress(&edit_in_progress, worktree);
12572 	if (error)
12573 		goto done;
12574 
12575 	if (edit_in_progress && edit_logmsg_only) {
12576 		error = got_error_msg(GOT_ERR_HISTEDIT_BUSY,
12577 		    "histedit operation is in progress in this "
12578 		    "work tree and must be continued or aborted "
12579 		    "before the -m option can be used");
12580 		goto done;
12581 	}
12582 	if (edit_in_progress && drop_only) {
12583 		error = got_error_msg(GOT_ERR_HISTEDIT_BUSY,
12584 		    "histedit operation is in progress in this "
12585 		    "work tree and must be continued or aborted "
12586 		    "before the -d option can be used");
12587 		goto done;
12588 	}
12589 	if (edit_in_progress && fold_only) {
12590 		error = got_error_msg(GOT_ERR_HISTEDIT_BUSY,
12591 		    "histedit operation is in progress in this "
12592 		    "work tree and must be continued or aborted "
12593 		    "before the -f option can be used");
12594 		goto done;
12595 	}
12596 	if (edit_in_progress && edit_only) {
12597 		error = got_error_msg(GOT_ERR_HISTEDIT_BUSY,
12598 		    "histedit operation is in progress in this "
12599 		    "work tree and must be continued or aborted "
12600 		    "before the -e option can be used");
12601 		goto done;
12602 	}
12603 
12604 	if (edit_in_progress && abort_edit) {
12605 		error = got_worktree_histedit_continue(&resume_commit_id,
12606 		    &tmp_branch, &branch, &base_commit_id, &fileindex,
12607 		    worktree, repo);
12608 		if (error)
12609 			goto done;
12610 		printf("Switching work tree to %s\n",
12611 		    got_ref_get_symref_target(branch));
12612 		error = got_worktree_histedit_abort(worktree, fileindex, repo,
12613 		    branch, base_commit_id, abort_progress, &upa);
12614 		if (error)
12615 			goto done;
12616 		printf("Histedit of %s aborted\n",
12617 		    got_ref_get_symref_target(branch));
12618 		print_merge_progress_stats(&upa);
12619 		goto done; /* nothing else to do */
12620 	} else if (abort_edit) {
12621 		error = got_error(GOT_ERR_NOT_HISTEDIT);
12622 		goto done;
12623 	}
12624 
12625 	error = get_author(&committer, repo, worktree);
12626 	if (error)
12627 		goto done;
12628 
12629 	if (continue_edit) {
12630 		char *path;
12631 
12632 		if (!edit_in_progress) {
12633 			error = got_error(GOT_ERR_NOT_HISTEDIT);
12634 			goto done;
12635 		}
12636 
12637 		error = got_worktree_get_histedit_script_path(&path, worktree);
12638 		if (error)
12639 			goto done;
12640 
12641 		error = histedit_load_list(&histedit_cmds, path, repo);
12642 		free(path);
12643 		if (error)
12644 			goto done;
12645 
12646 		error = got_worktree_histedit_continue(&resume_commit_id,
12647 		    &tmp_branch, &branch, &base_commit_id, &fileindex,
12648 		    worktree, repo);
12649 		if (error)
12650 			goto done;
12651 
12652 		error = got_ref_resolve(&head_commit_id, repo, branch);
12653 		if (error)
12654 			goto done;
12655 
12656 		error = got_object_open_as_commit(&commit, repo,
12657 		    head_commit_id);
12658 		if (error)
12659 			goto done;
12660 		parent_ids = got_object_commit_get_parent_ids(commit);
12661 		pid = STAILQ_FIRST(parent_ids);
12662 		if (pid == NULL) {
12663 			error = got_error(GOT_ERR_EMPTY_HISTEDIT);
12664 			goto done;
12665 		}
12666 		error = collect_commits(&commits, head_commit_id, &pid->id,
12667 		    base_commit_id, got_worktree_get_path_prefix(worktree),
12668 		    GOT_ERR_HISTEDIT_PATH, repo);
12669 		got_object_commit_close(commit);
12670 		commit = NULL;
12671 		if (error)
12672 			goto done;
12673 	} else {
12674 		if (edit_in_progress) {
12675 			error = got_error(GOT_ERR_HISTEDIT_BUSY);
12676 			goto done;
12677 		}
12678 
12679 		error = got_ref_open(&branch, repo,
12680 		    got_worktree_get_head_ref_name(worktree), 0);
12681 		if (error != NULL)
12682 			goto done;
12683 
12684 		if (strncmp(got_ref_get_name(branch), "refs/heads/", 11) != 0) {
12685 			error = got_error_msg(GOT_ERR_COMMIT_BRANCH,
12686 			    "will not edit commit history of a branch outside "
12687 			    "the \"refs/heads/\" reference namespace");
12688 			goto done;
12689 		}
12690 
12691 		error = got_ref_resolve(&head_commit_id, repo, branch);
12692 		got_ref_close(branch);
12693 		branch = NULL;
12694 		if (error)
12695 			goto done;
12696 
12697 		error = got_object_open_as_commit(&commit, repo,
12698 		    head_commit_id);
12699 		if (error)
12700 			goto done;
12701 		parent_ids = got_object_commit_get_parent_ids(commit);
12702 		pid = STAILQ_FIRST(parent_ids);
12703 		if (pid == NULL) {
12704 			error = got_error(GOT_ERR_EMPTY_HISTEDIT);
12705 			goto done;
12706 		}
12707 		error = collect_commits(&commits, head_commit_id, &pid->id,
12708 		    got_worktree_get_base_commit_id(worktree),
12709 		    got_worktree_get_path_prefix(worktree),
12710 		    GOT_ERR_HISTEDIT_PATH, repo);
12711 		got_object_commit_close(commit);
12712 		commit = NULL;
12713 		if (error)
12714 			goto done;
12715 
12716 		if (STAILQ_EMPTY(&commits)) {
12717 			error = got_error(GOT_ERR_EMPTY_HISTEDIT);
12718 			goto done;
12719 		}
12720 
12721 		error = got_worktree_histedit_prepare(&tmp_branch, &branch,
12722 		    &base_commit_id, &fileindex, worktree, repo);
12723 		if (error)
12724 			goto done;
12725 
12726 		if (edit_script_path) {
12727 			error = histedit_load_list(&histedit_cmds,
12728 			    edit_script_path, repo);
12729 			if (error) {
12730 				got_worktree_histedit_abort(worktree, fileindex,
12731 				    repo, branch, base_commit_id,
12732 				    abort_progress, &upa);
12733 				print_merge_progress_stats(&upa);
12734 				goto done;
12735 			}
12736 		} else {
12737 			const char *branch_name;
12738 			branch_name = got_ref_get_symref_target(branch);
12739 			if (strncmp(branch_name, "refs/heads/", 11) == 0)
12740 				branch_name += 11;
12741 			error = histedit_edit_script(&histedit_cmds, &commits,
12742 			    branch_name, edit_logmsg_only, fold_only,
12743 			    drop_only, edit_only, repo);
12744 			if (error) {
12745 				got_worktree_histedit_abort(worktree, fileindex,
12746 				    repo, branch, base_commit_id,
12747 				    abort_progress, &upa);
12748 				print_merge_progress_stats(&upa);
12749 				goto done;
12750 			}
12751 
12752 		}
12753 
12754 		error = histedit_save_list(&histedit_cmds, worktree,
12755 		    repo);
12756 		if (error) {
12757 			got_worktree_histedit_abort(worktree, fileindex,
12758 			    repo, branch, base_commit_id,
12759 			    abort_progress, &upa);
12760 			print_merge_progress_stats(&upa);
12761 			goto done;
12762 		}
12763 
12764 	}
12765 
12766 	error = histedit_check_script(&histedit_cmds, &commits, repo);
12767 	if (error)
12768 		goto done;
12769 
12770 	TAILQ_FOREACH(hle, &histedit_cmds, entry) {
12771 		if (resume_commit_id) {
12772 			if (got_object_id_cmp(hle->commit_id,
12773 			    resume_commit_id) != 0)
12774 				continue;
12775 
12776 			resume_commit_id = NULL;
12777 			if (hle->cmd->code == GOT_HISTEDIT_DROP ||
12778 			    hle->cmd->code == GOT_HISTEDIT_FOLD) {
12779 				error = histedit_skip_commit(hle, worktree,
12780 				    repo);
12781 				if (error)
12782 					goto done;
12783 			} else {
12784 				struct got_pathlist_head paths;
12785 				int have_changes = 0;
12786 
12787 				TAILQ_INIT(&paths);
12788 				error = got_pathlist_append(&paths, "", NULL);
12789 				if (error)
12790 					goto done;
12791 				error = got_worktree_status(worktree, &paths,
12792 				    repo, 0, check_local_changes, &have_changes,
12793 				    check_cancelled, NULL);
12794 				got_pathlist_free(&paths,
12795 				    GOT_PATHLIST_FREE_NONE);
12796 				if (error) {
12797 					if (error->code != GOT_ERR_CANCELLED)
12798 						goto done;
12799 					if (sigint_received || sigpipe_received)
12800 						goto done;
12801 				}
12802 				if (have_changes) {
12803 					error = histedit_commit(NULL, worktree,
12804 					    fileindex, tmp_branch, hle,
12805 					    committer, allow_conflict, repo);
12806 					if (error)
12807 						goto done;
12808 				} else {
12809 					error = got_object_open_as_commit(
12810 					    &commit, repo, hle->commit_id);
12811 					if (error)
12812 						goto done;
12813 					error = show_histedit_progress(commit,
12814 					    hle, NULL);
12815 					got_object_commit_close(commit);
12816 					commit = NULL;
12817 					if (error)
12818 						goto done;
12819 				}
12820 			}
12821 			continue;
12822 		}
12823 
12824 		if (hle->cmd->code == GOT_HISTEDIT_DROP) {
12825 			error = histedit_skip_commit(hle, worktree, repo);
12826 			if (error)
12827 				goto done;
12828 			continue;
12829 		}
12830 
12831 		error = got_object_open_as_commit(&commit, repo,
12832 		    hle->commit_id);
12833 		if (error)
12834 			goto done;
12835 		parent_ids = got_object_commit_get_parent_ids(commit);
12836 		pid = STAILQ_FIRST(parent_ids);
12837 
12838 		error = got_worktree_histedit_merge_files(&merged_paths,
12839 		    worktree, fileindex, &pid->id, hle->commit_id, repo,
12840 		    update_progress, &upa, check_cancelled, NULL);
12841 		if (error)
12842 			goto done;
12843 		got_object_commit_close(commit);
12844 		commit = NULL;
12845 
12846 		print_merge_progress_stats(&upa);
12847 		if (upa.conflicts > 0 || upa.missing > 0 ||
12848 		    upa.not_deleted > 0 || upa.unversioned > 0) {
12849 			if (upa.conflicts > 0) {
12850 				error = show_rebase_merge_conflict(
12851 				    hle->commit_id, repo);
12852 				if (error)
12853 					goto done;
12854 			}
12855 			got_pathlist_free(&merged_paths, GOT_PATHLIST_FREE_PATH);
12856 			break;
12857 		}
12858 
12859 		if (hle->cmd->code == GOT_HISTEDIT_EDIT) {
12860 			char *id_str;
12861 			error = got_object_id_str(&id_str, hle->commit_id);
12862 			if (error)
12863 				goto done;
12864 			printf("Stopping histedit for amending commit %s\n",
12865 			    id_str);
12866 			free(id_str);
12867 			got_pathlist_free(&merged_paths, GOT_PATHLIST_FREE_PATH);
12868 			error = got_worktree_histedit_postpone(worktree,
12869 			    fileindex);
12870 			goto done;
12871 		}
12872 
12873 		if (hle->cmd->code == GOT_HISTEDIT_FOLD) {
12874 			error = histedit_skip_commit(hle, worktree, repo);
12875 			if (error)
12876 				goto done;
12877 			continue;
12878 		}
12879 
12880 		error = histedit_commit(&merged_paths, worktree, fileindex,
12881 		    tmp_branch, hle, committer, allow_conflict, repo);
12882 		got_pathlist_free(&merged_paths, GOT_PATHLIST_FREE_PATH);
12883 		if (error)
12884 			goto done;
12885 	}
12886 
12887 	if (upa.conflicts > 0 || upa.missing > 0 ||
12888 	    upa.not_deleted > 0 || upa.unversioned > 0) {
12889 		error = got_worktree_histedit_postpone(worktree, fileindex);
12890 		if (error)
12891 			goto done;
12892 		if (upa.conflicts > 0 && upa.missing == 0 &&
12893 		    upa.not_deleted == 0 && upa.unversioned == 0) {
12894 			error = got_error_msg(GOT_ERR_CONFLICTS,
12895 			    "conflicts must be resolved before histedit "
12896 			    "can continue");
12897 		} else if (upa.conflicts > 0) {
12898 			error = got_error_msg(GOT_ERR_CONFLICTS,
12899 			    "conflicts must be resolved before histedit "
12900 			    "can continue; changes destined for some "
12901 			    "files were not yet merged and should be "
12902 			    "merged manually if required before the "
12903 			    "histedit operation is continued");
12904 		} else {
12905 			error = got_error_msg(GOT_ERR_CONFLICTS,
12906 			    "changes destined for some files were not "
12907 			    "yet merged and should be merged manually "
12908 			    "if required before the histedit operation "
12909 			    "is continued");
12910 		}
12911 	} else
12912 		error = histedit_complete(worktree, fileindex, tmp_branch,
12913 		    branch, repo);
12914 done:
12915 	free(cwd);
12916 	free(committer);
12917 	free(gitconfig_path);
12918 	got_object_id_queue_free(&commits);
12919 	histedit_free_list(&histedit_cmds);
12920 	free(head_commit_id);
12921 	free(base_commit_id);
12922 	free(resume_commit_id);
12923 	if (commit)
12924 		got_object_commit_close(commit);
12925 	if (branch)
12926 		got_ref_close(branch);
12927 	if (tmp_branch)
12928 		got_ref_close(tmp_branch);
12929 	if (worktree)
12930 		got_worktree_close(worktree);
12931 	if (repo) {
12932 		const struct got_error *close_err = got_repo_close(repo);
12933 		if (error == NULL)
12934 			error = close_err;
12935 	}
12936 	if (pack_fds) {
12937 		const struct got_error *pack_err =
12938 		    got_repo_pack_fds_close(pack_fds);
12939 		if (error == NULL)
12940 			error = pack_err;
12941 	}
12942 	return error;
12943 }
12944 
12945 __dead static void
12946 usage_integrate(void)
12947 {
12948 	fprintf(stderr, "usage: %s integrate branch\n", getprogname());
12949 	exit(1);
12950 }
12951 
12952 static const struct got_error *
12953 cmd_integrate(int argc, char *argv[])
12954 {
12955 	const struct got_error *error = NULL;
12956 	struct got_repository *repo = NULL;
12957 	struct got_worktree *worktree = NULL;
12958 	char *cwd = NULL, *refname = NULL, *base_refname = NULL;
12959 	const char *branch_arg = NULL;
12960 	struct got_reference *branch_ref = NULL, *base_branch_ref = NULL;
12961 	struct got_fileindex *fileindex = NULL;
12962 	struct got_object_id *commit_id = NULL, *base_commit_id = NULL;
12963 	int ch;
12964 	struct got_update_progress_arg upa;
12965 	int *pack_fds = NULL;
12966 
12967 #ifndef PROFILE
12968 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
12969 	    "unveil", NULL) == -1)
12970 		err(1, "pledge");
12971 #endif
12972 
12973 	while ((ch = getopt(argc, argv, "")) != -1) {
12974 		switch (ch) {
12975 		default:
12976 			usage_integrate();
12977 			/* NOTREACHED */
12978 		}
12979 	}
12980 
12981 	argc -= optind;
12982 	argv += optind;
12983 
12984 	if (argc != 1)
12985 		usage_integrate();
12986 	branch_arg = argv[0];
12987 
12988 	cwd = getcwd(NULL, 0);
12989 	if (cwd == NULL) {
12990 		error = got_error_from_errno("getcwd");
12991 		goto done;
12992 	}
12993 
12994 	error = got_repo_pack_fds_open(&pack_fds);
12995 	if (error != NULL)
12996 		goto done;
12997 
12998 	error = got_worktree_open(&worktree, cwd);
12999 	if (error) {
13000 		if (error->code == GOT_ERR_NOT_WORKTREE)
13001 			error = wrap_not_worktree_error(error, "integrate",
13002 			    cwd);
13003 		goto done;
13004 	}
13005 
13006 	error = check_rebase_or_histedit_in_progress(worktree);
13007 	if (error)
13008 		goto done;
13009 
13010 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
13011 	    NULL, pack_fds);
13012 	if (error != NULL)
13013 		goto done;
13014 
13015 	error = apply_unveil(got_repo_get_path(repo), 0,
13016 	    got_worktree_get_root_path(worktree));
13017 	if (error)
13018 		goto done;
13019 
13020 	error = check_merge_in_progress(worktree, repo);
13021 	if (error)
13022 		goto done;
13023 
13024 	if (asprintf(&refname, "refs/heads/%s", branch_arg) == -1) {
13025 		error = got_error_from_errno("asprintf");
13026 		goto done;
13027 	}
13028 
13029 	error = got_worktree_integrate_prepare(&fileindex, &branch_ref,
13030 	    &base_branch_ref, worktree, refname, repo);
13031 	if (error)
13032 		goto done;
13033 
13034 	refname = strdup(got_ref_get_name(branch_ref));
13035 	if (refname == NULL) {
13036 		error = got_error_from_errno("strdup");
13037 		got_worktree_integrate_abort(worktree, fileindex, repo,
13038 		    branch_ref, base_branch_ref);
13039 		goto done;
13040 	}
13041 	base_refname = strdup(got_ref_get_name(base_branch_ref));
13042 	if (base_refname == NULL) {
13043 		error = got_error_from_errno("strdup");
13044 		got_worktree_integrate_abort(worktree, fileindex, repo,
13045 		    branch_ref, base_branch_ref);
13046 		goto done;
13047 	}
13048 	if (strncmp(base_refname, "refs/heads/", 11) != 0) {
13049 		error = got_error(GOT_ERR_INTEGRATE_BRANCH);
13050 		got_worktree_integrate_abort(worktree, fileindex, repo,
13051 		    branch_ref, base_branch_ref);
13052 		goto done;
13053 	}
13054 
13055 	error = got_ref_resolve(&commit_id, repo, branch_ref);
13056 	if (error)
13057 		goto done;
13058 
13059 	error = got_ref_resolve(&base_commit_id, repo, base_branch_ref);
13060 	if (error)
13061 		goto done;
13062 
13063 	if (got_object_id_cmp(commit_id, base_commit_id) == 0) {
13064 		error = got_error_msg(GOT_ERR_SAME_BRANCH,
13065 		    "specified branch has already been integrated");
13066 		got_worktree_integrate_abort(worktree, fileindex, repo,
13067 		    branch_ref, base_branch_ref);
13068 		goto done;
13069 	}
13070 
13071 	error = check_linear_ancestry(commit_id, base_commit_id, 1, repo);
13072 	if (error) {
13073 		if (error->code == GOT_ERR_ANCESTRY)
13074 			error = got_error(GOT_ERR_REBASE_REQUIRED);
13075 		got_worktree_integrate_abort(worktree, fileindex, repo,
13076 		    branch_ref, base_branch_ref);
13077 		goto done;
13078 	}
13079 
13080 	memset(&upa, 0, sizeof(upa));
13081 	error = got_worktree_integrate_continue(worktree, fileindex, repo,
13082 	    branch_ref, base_branch_ref, update_progress, &upa,
13083 	    check_cancelled, NULL);
13084 	if (error)
13085 		goto done;
13086 
13087 	printf("Integrated %s into %s\n", refname, base_refname);
13088 	print_update_progress_stats(&upa);
13089 done:
13090 	if (repo) {
13091 		const struct got_error *close_err = got_repo_close(repo);
13092 		if (error == NULL)
13093 			error = close_err;
13094 	}
13095 	if (worktree)
13096 		got_worktree_close(worktree);
13097 	if (pack_fds) {
13098 		const struct got_error *pack_err =
13099 		    got_repo_pack_fds_close(pack_fds);
13100 		if (error == NULL)
13101 			error = pack_err;
13102 	}
13103 	free(cwd);
13104 	free(base_commit_id);
13105 	free(commit_id);
13106 	free(refname);
13107 	free(base_refname);
13108 	return error;
13109 }
13110 
13111 __dead static void
13112 usage_merge(void)
13113 {
13114 	fprintf(stderr, "usage: %s merge [-aCcn] [branch]\n", getprogname());
13115 	exit(1);
13116 }
13117 
13118 static const struct got_error *
13119 cmd_merge(int argc, char *argv[])
13120 {
13121 	const struct got_error *error = NULL;
13122 	struct got_worktree *worktree = NULL;
13123 	struct got_repository *repo = NULL;
13124 	struct got_fileindex *fileindex = NULL;
13125 	char *cwd = NULL, *id_str = NULL, *author = NULL;
13126 	char *gitconfig_path = NULL;
13127 	struct got_reference *branch = NULL, *wt_branch = NULL;
13128 	struct got_object_id *branch_tip = NULL, *yca_id = NULL;
13129 	struct got_object_id *wt_branch_tip = NULL;
13130 	int ch, merge_in_progress = 0, abort_merge = 0, continue_merge = 0;
13131 	int allow_conflict = 0, interrupt_merge = 0;
13132 	struct got_update_progress_arg upa;
13133 	struct got_object_id *merge_commit_id = NULL;
13134 	char *branch_name = NULL;
13135 	int *pack_fds = NULL;
13136 
13137 	memset(&upa, 0, sizeof(upa));
13138 
13139 #ifndef PROFILE
13140 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
13141 	    "unveil", NULL) == -1)
13142 		err(1, "pledge");
13143 #endif
13144 
13145 	while ((ch = getopt(argc, argv, "aCcn")) != -1) {
13146 		switch (ch) {
13147 		case 'a':
13148 			abort_merge = 1;
13149 			break;
13150 		case 'C':
13151 			allow_conflict = 1;
13152 		case 'c':
13153 			continue_merge = 1;
13154 			break;
13155 		case 'n':
13156 			interrupt_merge = 1;
13157 			break;
13158 		default:
13159 			usage_merge();
13160 			/* NOTREACHED */
13161 		}
13162 	}
13163 
13164 	argc -= optind;
13165 	argv += optind;
13166 
13167 	if (allow_conflict) {
13168 		if (abort_merge)
13169 			option_conflict('a', 'C');
13170 		if (!continue_merge)
13171 			errx(1, "-C option requires -c");
13172 	}
13173 	if (abort_merge && continue_merge)
13174 		option_conflict('a', 'c');
13175 	if (abort_merge || continue_merge) {
13176 		if (argc != 0)
13177 			usage_merge();
13178 	} else if (argc != 1)
13179 		usage_merge();
13180 
13181 	cwd = getcwd(NULL, 0);
13182 	if (cwd == NULL) {
13183 		error = got_error_from_errno("getcwd");
13184 		goto done;
13185 	}
13186 
13187 	error = got_repo_pack_fds_open(&pack_fds);
13188 	if (error != NULL)
13189 		goto done;
13190 
13191 	error = got_worktree_open(&worktree, cwd);
13192 	if (error) {
13193 		if (error->code == GOT_ERR_NOT_WORKTREE)
13194 			error = wrap_not_worktree_error(error,
13195 			    "merge", cwd);
13196 		goto done;
13197 	}
13198 
13199 	error = get_gitconfig_path(&gitconfig_path);
13200 	if (error)
13201 		goto done;
13202 	error = got_repo_open(&repo,
13203 	    worktree ? got_worktree_get_repo_path(worktree) : cwd,
13204 	    gitconfig_path, pack_fds);
13205 	if (error != NULL)
13206 		goto done;
13207 
13208 	if (worktree != NULL) {
13209 		error = worktree_has_logmsg_ref("merge", worktree, repo);
13210 		if (error)
13211 			goto done;
13212 	}
13213 
13214 	error = apply_unveil(got_repo_get_path(repo), 0,
13215 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
13216 	if (error)
13217 		goto done;
13218 
13219 	error = check_rebase_or_histedit_in_progress(worktree);
13220 	if (error)
13221 		goto done;
13222 
13223 	error = got_worktree_merge_in_progress(&merge_in_progress, worktree,
13224 	    repo);
13225 	if (error)
13226 		goto done;
13227 
13228 	if (abort_merge) {
13229 		if (!merge_in_progress) {
13230 			error = got_error(GOT_ERR_NOT_MERGING);
13231 			goto done;
13232 		}
13233 		error = got_worktree_merge_continue(&branch_name,
13234 		    &branch_tip, &fileindex, worktree, repo);
13235 		if (error)
13236 			goto done;
13237 		error = got_worktree_merge_abort(worktree, fileindex, repo,
13238 		    abort_progress, &upa);
13239 		if (error)
13240 			goto done;
13241 		printf("Merge of %s aborted\n", branch_name);
13242 		goto done; /* nothing else to do */
13243 	}
13244 
13245 	error = get_author(&author, repo, worktree);
13246 	if (error)
13247 		goto done;
13248 
13249 	if (continue_merge) {
13250 		if (!merge_in_progress) {
13251 			error = got_error(GOT_ERR_NOT_MERGING);
13252 			goto done;
13253 		}
13254 		error = got_worktree_merge_continue(&branch_name,
13255 		    &branch_tip, &fileindex, worktree, repo);
13256 		if (error)
13257 			goto done;
13258 	} else {
13259 		error = got_ref_open(&branch, repo, argv[0], 0);
13260 		if (error != NULL)
13261 			goto done;
13262 		branch_name = strdup(got_ref_get_name(branch));
13263 		if (branch_name == NULL) {
13264 			error = got_error_from_errno("strdup");
13265 			goto done;
13266 		}
13267 		error = got_ref_resolve(&branch_tip, repo, branch);
13268 		if (error)
13269 			goto done;
13270 	}
13271 
13272 	error = got_ref_open(&wt_branch, repo,
13273 	    got_worktree_get_head_ref_name(worktree), 0);
13274 	if (error)
13275 		goto done;
13276 	error = got_ref_resolve(&wt_branch_tip, repo, wt_branch);
13277 	if (error)
13278 		goto done;
13279 	error = got_commit_graph_find_youngest_common_ancestor(&yca_id,
13280 	    wt_branch_tip, branch_tip, 0, repo,
13281 	    check_cancelled, NULL);
13282 	if (error && error->code != GOT_ERR_ANCESTRY)
13283 		goto done;
13284 
13285 	if (!continue_merge) {
13286 		error = check_path_prefix(wt_branch_tip, branch_tip,
13287 		    got_worktree_get_path_prefix(worktree),
13288 		    GOT_ERR_MERGE_PATH, repo);
13289 		if (error)
13290 			goto done;
13291 		if (yca_id) {
13292 			error = check_same_branch(wt_branch_tip, branch,
13293 			    yca_id, repo);
13294 			if (error) {
13295 				if (error->code != GOT_ERR_ANCESTRY)
13296 					goto done;
13297 				error = NULL;
13298 			} else {
13299 				static char msg[512];
13300 				snprintf(msg, sizeof(msg),
13301 				    "cannot create a merge commit because "
13302 				    "%s is based on %s; %s can be integrated "
13303 				    "with 'got integrate' instead", branch_name,
13304 				    got_worktree_get_head_ref_name(worktree),
13305 				    branch_name);
13306 				error = got_error_msg(GOT_ERR_SAME_BRANCH, msg);
13307 				goto done;
13308 			}
13309 		}
13310 		error = got_worktree_merge_prepare(&fileindex, worktree,
13311 		    branch, repo);
13312 		if (error)
13313 			goto done;
13314 
13315 		error = got_worktree_merge_branch(worktree, fileindex,
13316 		    yca_id, branch_tip, repo, update_progress, &upa,
13317 		    check_cancelled, NULL);
13318 		if (error)
13319 			goto done;
13320 		print_merge_progress_stats(&upa);
13321 		if (!upa.did_something) {
13322 			error = got_worktree_merge_abort(worktree, fileindex,
13323 			    repo, abort_progress, &upa);
13324 			if (error)
13325 				goto done;
13326 			printf("Already up-to-date\n");
13327 			goto done;
13328 		}
13329 	}
13330 
13331 	if (interrupt_merge) {
13332 		error = got_worktree_merge_postpone(worktree, fileindex);
13333 		if (error)
13334 			goto done;
13335 		printf("Merge of %s interrupted on request\n", branch_name);
13336 	} else if (upa.conflicts > 0 || upa.missing > 0 ||
13337 	    upa.not_deleted > 0 || upa.unversioned > 0) {
13338 		error = got_worktree_merge_postpone(worktree, fileindex);
13339 		if (error)
13340 			goto done;
13341 		if (upa.conflicts > 0 && upa.missing == 0 &&
13342 		    upa.not_deleted == 0 && upa.unversioned == 0) {
13343 			error = got_error_msg(GOT_ERR_CONFLICTS,
13344 			    "conflicts must be resolved before merging "
13345 			    "can continue");
13346 		} else if (upa.conflicts > 0) {
13347 			error = got_error_msg(GOT_ERR_CONFLICTS,
13348 			    "conflicts must be resolved before merging "
13349 			    "can continue; changes destined for some "
13350 			    "files were not yet merged and "
13351 			    "should be merged manually if required before the "
13352 			    "merge operation is continued");
13353 		} else {
13354 			error = got_error_msg(GOT_ERR_CONFLICTS,
13355 			    "changes destined for some "
13356 			    "files were not yet merged and should be "
13357 			    "merged manually if required before the "
13358 			    "merge operation is continued");
13359 		}
13360 		goto done;
13361 	} else {
13362 		error = got_worktree_merge_commit(&merge_commit_id, worktree,
13363 		    fileindex, author, NULL, 1, branch_tip, branch_name,
13364 		    allow_conflict, repo, continue_merge ? print_status : NULL,
13365 		    NULL);
13366 		if (error)
13367 			goto done;
13368 		error = got_worktree_merge_complete(worktree, fileindex, repo);
13369 		if (error)
13370 			goto done;
13371 		error = got_object_id_str(&id_str, merge_commit_id);
13372 		if (error)
13373 			goto done;
13374 		printf("Merged %s into %s: %s\n", branch_name,
13375 		    got_worktree_get_head_ref_name(worktree),
13376 		    id_str);
13377 
13378 	}
13379 done:
13380 	free(gitconfig_path);
13381 	free(id_str);
13382 	free(merge_commit_id);
13383 	free(author);
13384 	free(branch_tip);
13385 	free(branch_name);
13386 	free(yca_id);
13387 	if (branch)
13388 		got_ref_close(branch);
13389 	if (wt_branch)
13390 		got_ref_close(wt_branch);
13391 	if (worktree)
13392 		got_worktree_close(worktree);
13393 	if (repo) {
13394 		const struct got_error *close_err = got_repo_close(repo);
13395 		if (error == NULL)
13396 			error = close_err;
13397 	}
13398 	if (pack_fds) {
13399 		const struct got_error *pack_err =
13400 		    got_repo_pack_fds_close(pack_fds);
13401 		if (error == NULL)
13402 			error = pack_err;
13403 	}
13404 	return error;
13405 }
13406 
13407 __dead static void
13408 usage_stage(void)
13409 {
13410 	fprintf(stderr, "usage: %s stage [-lpS] [-F response-script] "
13411 	    "[path ...]\n", getprogname());
13412 	exit(1);
13413 }
13414 
13415 static const struct got_error *
13416 print_stage(void *arg, unsigned char status, unsigned char staged_status,
13417     const char *path, struct got_object_id *blob_id,
13418     struct got_object_id *staged_blob_id, struct got_object_id *commit_id,
13419     int dirfd, const char *de_name)
13420 {
13421 	const struct got_error *err = NULL;
13422 	char *id_str = NULL;
13423 
13424 	if (staged_status != GOT_STATUS_ADD &&
13425 	    staged_status != GOT_STATUS_MODIFY &&
13426 	    staged_status != GOT_STATUS_DELETE)
13427 		return NULL;
13428 
13429 	if (staged_status == GOT_STATUS_ADD ||
13430 	    staged_status == GOT_STATUS_MODIFY)
13431 		err = got_object_id_str(&id_str, staged_blob_id);
13432 	else
13433 		err = got_object_id_str(&id_str, blob_id);
13434 	if (err)
13435 		return err;
13436 
13437 	printf("%s %c %s\n", id_str, staged_status, path);
13438 	free(id_str);
13439 	return NULL;
13440 }
13441 
13442 static const struct got_error *
13443 cmd_stage(int argc, char *argv[])
13444 {
13445 	const struct got_error *error = NULL;
13446 	struct got_repository *repo = NULL;
13447 	struct got_worktree *worktree = NULL;
13448 	char *cwd = NULL;
13449 	struct got_pathlist_head paths;
13450 	int ch, list_stage = 0, pflag = 0, allow_bad_symlinks = 0;
13451 	FILE *patch_script_file = NULL;
13452 	const char *patch_script_path = NULL;
13453 	struct choose_patch_arg cpa;
13454 	int *pack_fds = NULL;
13455 
13456 	TAILQ_INIT(&paths);
13457 
13458 #ifndef PROFILE
13459 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
13460 	    "unveil", NULL) == -1)
13461 		err(1, "pledge");
13462 #endif
13463 
13464 	while ((ch = getopt(argc, argv, "F:lpS")) != -1) {
13465 		switch (ch) {
13466 		case 'F':
13467 			patch_script_path = optarg;
13468 			break;
13469 		case 'l':
13470 			list_stage = 1;
13471 			break;
13472 		case 'p':
13473 			pflag = 1;
13474 			break;
13475 		case 'S':
13476 			allow_bad_symlinks = 1;
13477 			break;
13478 		default:
13479 			usage_stage();
13480 			/* NOTREACHED */
13481 		}
13482 	}
13483 
13484 	argc -= optind;
13485 	argv += optind;
13486 
13487 	if (list_stage && (pflag || patch_script_path))
13488 		errx(1, "-l option cannot be used with other options");
13489 	if (patch_script_path && !pflag)
13490 		errx(1, "-F option can only be used together with -p option");
13491 
13492 	cwd = getcwd(NULL, 0);
13493 	if (cwd == NULL) {
13494 		error = got_error_from_errno("getcwd");
13495 		goto done;
13496 	}
13497 
13498 	error = got_repo_pack_fds_open(&pack_fds);
13499 	if (error != NULL)
13500 		goto done;
13501 
13502 	error = got_worktree_open(&worktree, cwd);
13503 	if (error) {
13504 		if (error->code == GOT_ERR_NOT_WORKTREE)
13505 			error = wrap_not_worktree_error(error, "stage", cwd);
13506 		goto done;
13507 	}
13508 
13509 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
13510 	    NULL, pack_fds);
13511 	if (error != NULL)
13512 		goto done;
13513 
13514 	if (patch_script_path) {
13515 		patch_script_file = fopen(patch_script_path, "re");
13516 		if (patch_script_file == NULL) {
13517 			error = got_error_from_errno2("fopen",
13518 			    patch_script_path);
13519 			goto done;
13520 		}
13521 	}
13522 	error = apply_unveil(got_repo_get_path(repo), 0,
13523 	    got_worktree_get_root_path(worktree));
13524 	if (error)
13525 		goto done;
13526 
13527 	error = check_merge_in_progress(worktree, repo);
13528 	if (error)
13529 		goto done;
13530 
13531 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
13532 	if (error)
13533 		goto done;
13534 
13535 	if (list_stage)
13536 		error = got_worktree_status(worktree, &paths, repo, 0,
13537 		    print_stage, NULL, check_cancelled, NULL);
13538 	else {
13539 		cpa.patch_script_file = patch_script_file;
13540 		cpa.action = "stage";
13541 		error = got_worktree_stage(worktree, &paths,
13542 		    pflag ? NULL : print_status, NULL,
13543 		    pflag ? choose_patch : NULL, &cpa,
13544 		    allow_bad_symlinks, repo);
13545 	}
13546 done:
13547 	if (patch_script_file && fclose(patch_script_file) == EOF &&
13548 	    error == NULL)
13549 		error = got_error_from_errno2("fclose", patch_script_path);
13550 	if (repo) {
13551 		const struct got_error *close_err = got_repo_close(repo);
13552 		if (error == NULL)
13553 			error = close_err;
13554 	}
13555 	if (worktree)
13556 		got_worktree_close(worktree);
13557 	if (pack_fds) {
13558 		const struct got_error *pack_err =
13559 		    got_repo_pack_fds_close(pack_fds);
13560 		if (error == NULL)
13561 			error = pack_err;
13562 	}
13563 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_PATH);
13564 	free(cwd);
13565 	return error;
13566 }
13567 
13568 __dead static void
13569 usage_unstage(void)
13570 {
13571 	fprintf(stderr, "usage: %s unstage [-p] [-F response-script] "
13572 	    "[path ...]\n", getprogname());
13573 	exit(1);
13574 }
13575 
13576 
13577 static const struct got_error *
13578 cmd_unstage(int argc, char *argv[])
13579 {
13580 	const struct got_error *error = NULL;
13581 	struct got_repository *repo = NULL;
13582 	struct got_worktree *worktree = NULL;
13583 	char *cwd = NULL;
13584 	struct got_pathlist_head paths;
13585 	int ch, pflag = 0;
13586 	struct got_update_progress_arg upa;
13587 	FILE *patch_script_file = NULL;
13588 	const char *patch_script_path = NULL;
13589 	struct choose_patch_arg cpa;
13590 	int *pack_fds = NULL;
13591 
13592 	TAILQ_INIT(&paths);
13593 
13594 #ifndef PROFILE
13595 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
13596 	    "unveil", NULL) == -1)
13597 		err(1, "pledge");
13598 #endif
13599 
13600 	while ((ch = getopt(argc, argv, "F:p")) != -1) {
13601 		switch (ch) {
13602 		case 'F':
13603 			patch_script_path = optarg;
13604 			break;
13605 		case 'p':
13606 			pflag = 1;
13607 			break;
13608 		default:
13609 			usage_unstage();
13610 			/* NOTREACHED */
13611 		}
13612 	}
13613 
13614 	argc -= optind;
13615 	argv += optind;
13616 
13617 	if (patch_script_path && !pflag)
13618 		errx(1, "-F option can only be used together with -p option");
13619 
13620 	cwd = getcwd(NULL, 0);
13621 	if (cwd == NULL) {
13622 		error = got_error_from_errno("getcwd");
13623 		goto done;
13624 	}
13625 
13626 	error = got_repo_pack_fds_open(&pack_fds);
13627 	if (error != NULL)
13628 		goto done;
13629 
13630 	error = got_worktree_open(&worktree, cwd);
13631 	if (error) {
13632 		if (error->code == GOT_ERR_NOT_WORKTREE)
13633 			error = wrap_not_worktree_error(error, "unstage", cwd);
13634 		goto done;
13635 	}
13636 
13637 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
13638 	    NULL, pack_fds);
13639 	if (error != NULL)
13640 		goto done;
13641 
13642 	if (patch_script_path) {
13643 		patch_script_file = fopen(patch_script_path, "re");
13644 		if (patch_script_file == NULL) {
13645 			error = got_error_from_errno2("fopen",
13646 			    patch_script_path);
13647 			goto done;
13648 		}
13649 	}
13650 
13651 	error = apply_unveil(got_repo_get_path(repo), 0,
13652 	    got_worktree_get_root_path(worktree));
13653 	if (error)
13654 		goto done;
13655 
13656 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
13657 	if (error)
13658 		goto done;
13659 
13660 	cpa.patch_script_file = patch_script_file;
13661 	cpa.action = "unstage";
13662 	memset(&upa, 0, sizeof(upa));
13663 	error = got_worktree_unstage(worktree, &paths, update_progress,
13664 	    &upa, pflag ? choose_patch : NULL, &cpa, repo);
13665 	if (!error)
13666 		print_merge_progress_stats(&upa);
13667 done:
13668 	if (patch_script_file && fclose(patch_script_file) == EOF &&
13669 	    error == NULL)
13670 		error = got_error_from_errno2("fclose", patch_script_path);
13671 	if (repo) {
13672 		const struct got_error *close_err = got_repo_close(repo);
13673 		if (error == NULL)
13674 			error = close_err;
13675 	}
13676 	if (worktree)
13677 		got_worktree_close(worktree);
13678 	if (pack_fds) {
13679 		const struct got_error *pack_err =
13680 		    got_repo_pack_fds_close(pack_fds);
13681 		if (error == NULL)
13682 			error = pack_err;
13683 	}
13684 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_PATH);
13685 	free(cwd);
13686 	return error;
13687 }
13688 
13689 __dead static void
13690 usage_cat(void)
13691 {
13692 	fprintf(stderr, "usage: %s cat [-P] [-c commit] [-r repository-path] "
13693 	    "arg ...\n", getprogname());
13694 	exit(1);
13695 }
13696 
13697 static const struct got_error *
13698 cat_blob(struct got_object_id *id, struct got_repository *repo, FILE *outfile)
13699 {
13700 	const struct got_error *err;
13701 	struct got_blob_object *blob;
13702 	int fd = -1;
13703 
13704 	fd = got_opentempfd();
13705 	if (fd == -1)
13706 		return got_error_from_errno("got_opentempfd");
13707 
13708 	err = got_object_open_as_blob(&blob, repo, id, 8192, fd);
13709 	if (err)
13710 		goto done;
13711 
13712 	err = got_object_blob_dump_to_file(NULL, NULL, NULL, outfile, blob);
13713 done:
13714 	if (fd != -1 && close(fd) == -1 && err == NULL)
13715 		err = got_error_from_errno("close");
13716 	if (blob)
13717 		got_object_blob_close(blob);
13718 	return err;
13719 }
13720 
13721 static const struct got_error *
13722 cat_tree(struct got_object_id *id, struct got_repository *repo, FILE *outfile)
13723 {
13724 	const struct got_error *err;
13725 	struct got_tree_object *tree;
13726 	int nentries, i;
13727 
13728 	err = got_object_open_as_tree(&tree, repo, id);
13729 	if (err)
13730 		return err;
13731 
13732 	nentries = got_object_tree_get_nentries(tree);
13733 	for (i = 0; i < nentries; i++) {
13734 		struct got_tree_entry *te;
13735 		char *id_str;
13736 		if (sigint_received || sigpipe_received)
13737 			break;
13738 		te = got_object_tree_get_entry(tree, i);
13739 		err = got_object_id_str(&id_str, got_tree_entry_get_id(te));
13740 		if (err)
13741 			break;
13742 		fprintf(outfile, "%s %.7o %s\n", id_str,
13743 		    got_tree_entry_get_mode(te),
13744 		    got_tree_entry_get_name(te));
13745 		free(id_str);
13746 	}
13747 
13748 	got_object_tree_close(tree);
13749 	return err;
13750 }
13751 
13752 static const struct got_error *
13753 cat_commit(struct got_object_id *id, struct got_repository *repo, FILE *outfile)
13754 {
13755 	const struct got_error *err;
13756 	struct got_commit_object *commit;
13757 	const struct got_object_id_queue *parent_ids;
13758 	struct got_object_qid *pid;
13759 	char *id_str = NULL;
13760 	const char *logmsg = NULL;
13761 	char gmtoff[6];
13762 
13763 	err = got_object_open_as_commit(&commit, repo, id);
13764 	if (err)
13765 		return err;
13766 
13767 	err = got_object_id_str(&id_str, got_object_commit_get_tree_id(commit));
13768 	if (err)
13769 		goto done;
13770 
13771 	fprintf(outfile, "%s%s\n", GOT_COMMIT_LABEL_TREE, id_str);
13772 	parent_ids = got_object_commit_get_parent_ids(commit);
13773 	fprintf(outfile, "numparents %d\n",
13774 	    got_object_commit_get_nparents(commit));
13775 	STAILQ_FOREACH(pid, parent_ids, entry) {
13776 		char *pid_str;
13777 		err = got_object_id_str(&pid_str, &pid->id);
13778 		if (err)
13779 			goto done;
13780 		fprintf(outfile, "%s%s\n", GOT_COMMIT_LABEL_PARENT, pid_str);
13781 		free(pid_str);
13782 	}
13783 	got_date_format_gmtoff(gmtoff, sizeof(gmtoff),
13784 	    got_object_commit_get_author_gmtoff(commit));
13785 	fprintf(outfile, "%s%s %lld %s\n", GOT_COMMIT_LABEL_AUTHOR,
13786 	    got_object_commit_get_author(commit),
13787 	    (long long)got_object_commit_get_author_time(commit),
13788 	    gmtoff);
13789 
13790 	got_date_format_gmtoff(gmtoff, sizeof(gmtoff),
13791 	    got_object_commit_get_committer_gmtoff(commit));
13792 	fprintf(outfile, "%s%s %lld %s\n", GOT_COMMIT_LABEL_COMMITTER,
13793 	    got_object_commit_get_committer(commit),
13794 	    (long long)got_object_commit_get_committer_time(commit),
13795 	    gmtoff);
13796 
13797 	logmsg = got_object_commit_get_logmsg_raw(commit);
13798 	fprintf(outfile, "messagelen %zd\n", strlen(logmsg));
13799 	fprintf(outfile, "%s", logmsg);
13800 done:
13801 	free(id_str);
13802 	got_object_commit_close(commit);
13803 	return err;
13804 }
13805 
13806 static const struct got_error *
13807 cat_tag(struct got_object_id *id, struct got_repository *repo, FILE *outfile)
13808 {
13809 	const struct got_error *err;
13810 	struct got_tag_object *tag;
13811 	char *id_str = NULL;
13812 	const char *tagmsg = NULL;
13813 	char gmtoff[6];
13814 
13815 	err = got_object_open_as_tag(&tag, repo, id);
13816 	if (err)
13817 		return err;
13818 
13819 	err = got_object_id_str(&id_str, got_object_tag_get_object_id(tag));
13820 	if (err)
13821 		goto done;
13822 
13823 	fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_OBJECT, id_str);
13824 
13825 	switch (got_object_tag_get_object_type(tag)) {
13826 	case GOT_OBJ_TYPE_BLOB:
13827 		fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_TYPE,
13828 		    GOT_OBJ_LABEL_BLOB);
13829 		break;
13830 	case GOT_OBJ_TYPE_TREE:
13831 		fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_TYPE,
13832 		    GOT_OBJ_LABEL_TREE);
13833 		break;
13834 	case GOT_OBJ_TYPE_COMMIT:
13835 		fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_TYPE,
13836 		    GOT_OBJ_LABEL_COMMIT);
13837 		break;
13838 	case GOT_OBJ_TYPE_TAG:
13839 		fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_TYPE,
13840 		    GOT_OBJ_LABEL_TAG);
13841 		break;
13842 	default:
13843 		break;
13844 	}
13845 
13846 	fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_TAG,
13847 	    got_object_tag_get_name(tag));
13848 
13849 	got_date_format_gmtoff(gmtoff, sizeof(gmtoff),
13850 	    got_object_tag_get_tagger_gmtoff(tag));
13851 	fprintf(outfile, "%s%s %lld %s\n", GOT_TAG_LABEL_TAGGER,
13852 	    got_object_tag_get_tagger(tag),
13853 	    (long long)got_object_tag_get_tagger_time(tag),
13854 	    gmtoff);
13855 
13856 	tagmsg = got_object_tag_get_message(tag);
13857 	fprintf(outfile, "messagelen %zd\n", strlen(tagmsg));
13858 	fprintf(outfile, "%s", tagmsg);
13859 done:
13860 	free(id_str);
13861 	got_object_tag_close(tag);
13862 	return err;
13863 }
13864 
13865 static const struct got_error *
13866 cmd_cat(int argc, char *argv[])
13867 {
13868 	const struct got_error *error;
13869 	struct got_repository *repo = NULL;
13870 	struct got_worktree *worktree = NULL;
13871 	char *cwd = NULL, *repo_path = NULL, *label = NULL;
13872 	const char *commit_id_str = NULL;
13873 	struct got_object_id *id = NULL, *commit_id = NULL;
13874 	struct got_commit_object *commit = NULL;
13875 	int ch, obj_type, i, force_path = 0;
13876 	struct got_reflist_head refs;
13877 	int *pack_fds = NULL;
13878 
13879 	TAILQ_INIT(&refs);
13880 
13881 #ifndef PROFILE
13882 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
13883 	    NULL) == -1)
13884 		err(1, "pledge");
13885 #endif
13886 
13887 	while ((ch = getopt(argc, argv, "c:Pr:")) != -1) {
13888 		switch (ch) {
13889 		case 'c':
13890 			commit_id_str = optarg;
13891 			break;
13892 		case 'P':
13893 			force_path = 1;
13894 			break;
13895 		case 'r':
13896 			repo_path = realpath(optarg, NULL);
13897 			if (repo_path == NULL)
13898 				return got_error_from_errno2("realpath",
13899 				    optarg);
13900 			got_path_strip_trailing_slashes(repo_path);
13901 			break;
13902 		default:
13903 			usage_cat();
13904 			/* NOTREACHED */
13905 		}
13906 	}
13907 
13908 	argc -= optind;
13909 	argv += optind;
13910 
13911 	cwd = getcwd(NULL, 0);
13912 	if (cwd == NULL) {
13913 		error = got_error_from_errno("getcwd");
13914 		goto done;
13915 	}
13916 
13917 	error = got_repo_pack_fds_open(&pack_fds);
13918 	if (error != NULL)
13919 		goto done;
13920 
13921 	if (repo_path == NULL) {
13922 		error = got_worktree_open(&worktree, cwd);
13923 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
13924 			goto done;
13925 		if (worktree) {
13926 			repo_path = strdup(
13927 			    got_worktree_get_repo_path(worktree));
13928 			if (repo_path == NULL) {
13929 				error = got_error_from_errno("strdup");
13930 				goto done;
13931 			}
13932 
13933 			/* Release work tree lock. */
13934 			got_worktree_close(worktree);
13935 			worktree = NULL;
13936 		}
13937 	}
13938 
13939 	if (repo_path == NULL) {
13940 		repo_path = strdup(cwd);
13941 		if (repo_path == NULL)
13942 			return got_error_from_errno("strdup");
13943 	}
13944 
13945 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
13946 	free(repo_path);
13947 	if (error != NULL)
13948 		goto done;
13949 
13950 	error = apply_unveil(got_repo_get_path(repo), 1, NULL);
13951 	if (error)
13952 		goto done;
13953 
13954 	error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name, NULL);
13955 	if (error)
13956 		goto done;
13957 
13958 	if (commit_id_str == NULL)
13959 		commit_id_str = GOT_REF_HEAD;
13960 	error = got_repo_match_object_id(&commit_id, NULL,
13961 	    commit_id_str, GOT_OBJ_TYPE_COMMIT, &refs, repo);
13962 	if (error)
13963 		goto done;
13964 
13965 	error = got_object_open_as_commit(&commit, repo, commit_id);
13966 	if (error)
13967 		goto done;
13968 
13969 	for (i = 0; i < argc; i++) {
13970 		if (force_path) {
13971 			error = got_object_id_by_path(&id, repo, commit,
13972 			    argv[i]);
13973 			if (error)
13974 				break;
13975 		} else {
13976 			error = got_repo_match_object_id(&id, &label, argv[i],
13977 			    GOT_OBJ_TYPE_ANY, NULL /* do not resolve tags */,
13978 			    repo);
13979 			if (error) {
13980 				if (error->code != GOT_ERR_BAD_OBJ_ID_STR &&
13981 				    error->code != GOT_ERR_NOT_REF)
13982 					break;
13983 				error = got_object_id_by_path(&id, repo,
13984 				    commit, argv[i]);
13985 				if (error)
13986 					break;
13987 			}
13988 		}
13989 
13990 		error = got_object_get_type(&obj_type, repo, id);
13991 		if (error)
13992 			break;
13993 
13994 		switch (obj_type) {
13995 		case GOT_OBJ_TYPE_BLOB:
13996 			error = cat_blob(id, repo, stdout);
13997 			break;
13998 		case GOT_OBJ_TYPE_TREE:
13999 			error = cat_tree(id, repo, stdout);
14000 			break;
14001 		case GOT_OBJ_TYPE_COMMIT:
14002 			error = cat_commit(id, repo, stdout);
14003 			break;
14004 		case GOT_OBJ_TYPE_TAG:
14005 			error = cat_tag(id, repo, stdout);
14006 			break;
14007 		default:
14008 			error = got_error(GOT_ERR_OBJ_TYPE);
14009 			break;
14010 		}
14011 		if (error)
14012 			break;
14013 		free(label);
14014 		label = NULL;
14015 		free(id);
14016 		id = NULL;
14017 	}
14018 done:
14019 	free(label);
14020 	free(id);
14021 	free(commit_id);
14022 	if (commit)
14023 		got_object_commit_close(commit);
14024 	if (worktree)
14025 		got_worktree_close(worktree);
14026 	if (repo) {
14027 		const struct got_error *close_err = got_repo_close(repo);
14028 		if (error == NULL)
14029 			error = close_err;
14030 	}
14031 	if (pack_fds) {
14032 		const struct got_error *pack_err =
14033 		    got_repo_pack_fds_close(pack_fds);
14034 		if (error == NULL)
14035 			error = pack_err;
14036 	}
14037 
14038 	got_ref_list_free(&refs);
14039 	return error;
14040 }
14041 
14042 __dead static void
14043 usage_info(void)
14044 {
14045 	fprintf(stderr, "usage: %s info [path ...]\n",
14046 	    getprogname());
14047 	exit(1);
14048 }
14049 
14050 static const struct got_error *
14051 print_path_info(void *arg, const char *path, mode_t mode, time_t mtime,
14052     struct got_object_id *blob_id, struct got_object_id *staged_blob_id,
14053     struct got_object_id *commit_id)
14054 {
14055 	const struct got_error *err = NULL;
14056 	char *id_str = NULL;
14057 	char datebuf[128];
14058 	struct tm mytm, *tm;
14059 	struct got_pathlist_head *paths = arg;
14060 	struct got_pathlist_entry *pe;
14061 
14062 	/*
14063 	 * Clear error indication from any of the path arguments which
14064 	 * would cause this file index entry to be displayed.
14065 	 */
14066 	TAILQ_FOREACH(pe, paths, entry) {
14067 		if (got_path_cmp(path, pe->path, strlen(path),
14068 		    pe->path_len) == 0 ||
14069 		    got_path_is_child(path, pe->path, pe->path_len))
14070 			pe->data = NULL; /* no error */
14071 	}
14072 
14073 	printf(GOT_COMMIT_SEP_STR);
14074 	if (S_ISLNK(mode))
14075 		printf("symlink: %s\n", path);
14076 	else if (S_ISREG(mode)) {
14077 		printf("file: %s\n", path);
14078 		printf("mode: %o\n", mode & (S_IRWXU | S_IRWXG | S_IRWXO));
14079 	} else if (S_ISDIR(mode))
14080 		printf("directory: %s\n", path);
14081 	else
14082 		printf("something: %s\n", path);
14083 
14084 	tm = localtime_r(&mtime, &mytm);
14085 	if (tm == NULL)
14086 		return NULL;
14087 	if (strftime(datebuf, sizeof(datebuf), "%c %Z", tm) == 0)
14088 		return got_error(GOT_ERR_NO_SPACE);
14089 	printf("timestamp: %s\n", datebuf);
14090 
14091 	if (blob_id) {
14092 		err = got_object_id_str(&id_str, blob_id);
14093 		if (err)
14094 			return err;
14095 		printf("based on blob: %s\n", id_str);
14096 		free(id_str);
14097 	}
14098 
14099 	if (staged_blob_id) {
14100 		err = got_object_id_str(&id_str, staged_blob_id);
14101 		if (err)
14102 			return err;
14103 		printf("based on staged blob: %s\n", id_str);
14104 		free(id_str);
14105 	}
14106 
14107 	if (commit_id) {
14108 		err = got_object_id_str(&id_str, commit_id);
14109 		if (err)
14110 			return err;
14111 		printf("based on commit: %s\n", id_str);
14112 		free(id_str);
14113 	}
14114 
14115 	return NULL;
14116 }
14117 
14118 static const struct got_error *
14119 cmd_info(int argc, char *argv[])
14120 {
14121 	const struct got_error *error = NULL;
14122 	struct got_worktree *worktree = NULL;
14123 	char *cwd = NULL, *id_str = NULL;
14124 	struct got_pathlist_head paths;
14125 	char *uuidstr = NULL;
14126 	int ch, show_files = 0;
14127 
14128 	TAILQ_INIT(&paths);
14129 
14130 #ifndef PROFILE
14131 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
14132 	    NULL) == -1)
14133 		err(1, "pledge");
14134 #endif
14135 
14136 	while ((ch = getopt(argc, argv, "")) != -1) {
14137 		switch (ch) {
14138 		default:
14139 			usage_info();
14140 			/* NOTREACHED */
14141 		}
14142 	}
14143 
14144 	argc -= optind;
14145 	argv += optind;
14146 
14147 	cwd = getcwd(NULL, 0);
14148 	if (cwd == NULL) {
14149 		error = got_error_from_errno("getcwd");
14150 		goto done;
14151 	}
14152 
14153 	error = got_worktree_open(&worktree, cwd);
14154 	if (error) {
14155 		if (error->code == GOT_ERR_NOT_WORKTREE)
14156 			error = wrap_not_worktree_error(error, "info", cwd);
14157 		goto done;
14158 	}
14159 
14160 #ifndef PROFILE
14161 	/* Remove "wpath cpath proc exec sendfd" promises. */
14162 	if (pledge("stdio rpath flock unveil", NULL) == -1)
14163 		err(1, "pledge");
14164 #endif
14165 	error = apply_unveil(NULL, 0, got_worktree_get_root_path(worktree));
14166 	if (error)
14167 		goto done;
14168 
14169 	if (argc >= 1) {
14170 		error = get_worktree_paths_from_argv(&paths, argc, argv,
14171 		    worktree);
14172 		if (error)
14173 			goto done;
14174 		show_files = 1;
14175 	}
14176 
14177 	error = got_object_id_str(&id_str,
14178 	    got_worktree_get_base_commit_id(worktree));
14179 	if (error)
14180 		goto done;
14181 
14182 	error = got_worktree_get_uuid(&uuidstr, worktree);
14183 	if (error)
14184 		goto done;
14185 
14186 	printf("work tree: %s\n", got_worktree_get_root_path(worktree));
14187 	printf("work tree base commit: %s\n", id_str);
14188 	printf("work tree path prefix: %s\n",
14189 	    got_worktree_get_path_prefix(worktree));
14190 	printf("work tree branch reference: %s\n",
14191 	    got_worktree_get_head_ref_name(worktree));
14192 	printf("work tree UUID: %s\n", uuidstr);
14193 	printf("repository: %s\n", got_worktree_get_repo_path(worktree));
14194 
14195 	if (show_files) {
14196 		struct got_pathlist_entry *pe;
14197 		TAILQ_FOREACH(pe, &paths, entry) {
14198 			if (pe->path_len == 0)
14199 				continue;
14200 			/*
14201 			 * Assume this path will fail. This will be corrected
14202 			 * in print_path_info() in case the path does suceeed.
14203 			 */
14204 			pe->data = (void *)got_error(GOT_ERR_BAD_PATH);
14205 		}
14206 		error = got_worktree_path_info(worktree, &paths,
14207 		    print_path_info, &paths, check_cancelled, NULL);
14208 		if (error)
14209 			goto done;
14210 		TAILQ_FOREACH(pe, &paths, entry) {
14211 			if (pe->data != NULL) {
14212 				const struct got_error *perr;
14213 
14214 				perr = pe->data;
14215 				error = got_error_fmt(perr->code, "%s",
14216 				    pe->path);
14217 				break;
14218 			}
14219 		}
14220 	}
14221 done:
14222 	if (worktree)
14223 		got_worktree_close(worktree);
14224 	got_pathlist_free(&paths, GOT_PATHLIST_FREE_PATH);
14225 	free(cwd);
14226 	free(id_str);
14227 	free(uuidstr);
14228 	return error;
14229 }