1 /*
2  * Copyright (c) 2017 Martin Pieuchot <mpi@openbsd.org>
3  * Copyright (c) 2018, 2019, 2020 Stefan Sperling <stsp@openbsd.org>
4  * Copyright (c) 2020 Ori Bernstein <ori@openbsd.org>
5  *
6  * Permission to use, copy, modify, and distribute this software for any
7  * purpose with or without fee is hereby granted, provided that the above
8  * copyright notice and this permission notice appear in all copies.
9  *
10  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17  */
18 
19 #include <sys/time.h>
20 #include <sys/types.h>
21 #include <sys/stat.h>
22 #include <sys/wait.h>
23 
24 #include <err.h>
25 #include <errno.h>
26 #include <fcntl.h>
27 #include <limits.h>
28 #include <locale.h>
29 #include <ctype.h>
30 #include <signal.h>
31 #include <stdio.h>
32 #include <stdlib.h>
33 #include <string.h>
34 #include <unistd.h>
35 #include <libgen.h>
36 #include <time.h>
37 #include <paths.h>
38 #include <regex.h>
39 #include <getopt.h>
40 
41 #include "got_compat.h"
42 
43 #include "got_version.h"
44 #include "got_error.h"
45 #include "got_object.h"
46 #include "got_reference.h"
47 #include "got_repository.h"
48 #include "got_path.h"
49 #include "got_cancel.h"
50 #include "got_worktree.h"
51 #include "got_diff.h"
52 #include "got_commit_graph.h"
53 #include "got_fetch.h"
54 #include "got_send.h"
55 #include "got_blame.h"
56 #include "got_privsep.h"
57 #include "got_opentemp.h"
58 #include "got_gotconfig.h"
59 #include "got_dial.h"
60 #include "got_patch.h"
61 #include "got_sigs.h"
62 #include "got_date.h"
63 
64 #ifndef nitems
65 #define nitems(_a)	(sizeof((_a)) / sizeof((_a)[0]))
66 #endif
67 
68 static volatile sig_atomic_t sigint_received;
69 static volatile sig_atomic_t sigpipe_received;
70 
71 static void
72 catch_sigint(int signo)
73 {
74 	sigint_received = 1;
75 }
76 
77 static void
78 catch_sigpipe(int signo)
79 {
80 	sigpipe_received = 1;
81 }
82 
83 
84 struct got_cmd {
85 	const char	*cmd_name;
86 	const struct got_error *(*cmd_main)(int, char *[]);
87 	void		(*cmd_usage)(void);
88 	const char	*cmd_alias;
89 };
90 
91 __dead static void	usage(int, int);
92 __dead static void	usage_import(void);
93 __dead static void	usage_clone(void);
94 __dead static void	usage_fetch(void);
95 __dead static void	usage_checkout(void);
96 __dead static void	usage_update(void);
97 __dead static void	usage_log(void);
98 __dead static void	usage_diff(void);
99 __dead static void	usage_blame(void);
100 __dead static void	usage_tree(void);
101 __dead static void	usage_status(void);
102 __dead static void	usage_ref(void);
103 __dead static void	usage_branch(void);
104 __dead static void	usage_tag(void);
105 __dead static void	usage_add(void);
106 __dead static void	usage_remove(void);
107 __dead static void	usage_patch(void);
108 __dead static void	usage_revert(void);
109 __dead static void	usage_commit(void);
110 __dead static void	usage_send(void);
111 __dead static void	usage_cherrypick(void);
112 __dead static void	usage_backout(void);
113 __dead static void	usage_rebase(void);
114 __dead static void	usage_histedit(void);
115 __dead static void	usage_integrate(void);
116 __dead static void	usage_merge(void);
117 __dead static void	usage_stage(void);
118 __dead static void	usage_unstage(void);
119 __dead static void	usage_cat(void);
120 __dead static void	usage_info(void);
121 
122 static const struct got_error*		cmd_import(int, char *[]);
123 static const struct got_error*		cmd_clone(int, char *[]);
124 static const struct got_error*		cmd_fetch(int, char *[]);
125 static const struct got_error*		cmd_checkout(int, char *[]);
126 static const struct got_error*		cmd_update(int, char *[]);
127 static const struct got_error*		cmd_log(int, char *[]);
128 static const struct got_error*		cmd_diff(int, char *[]);
129 static const struct got_error*		cmd_blame(int, char *[]);
130 static const struct got_error*		cmd_tree(int, char *[]);
131 static const struct got_error*		cmd_status(int, char *[]);
132 static const struct got_error*		cmd_ref(int, char *[]);
133 static const struct got_error*		cmd_branch(int, char *[]);
134 static const struct got_error*		cmd_tag(int, char *[]);
135 static const struct got_error*		cmd_add(int, char *[]);
136 static const struct got_error*		cmd_remove(int, char *[]);
137 static const struct got_error*		cmd_patch(int, char *[]);
138 static const struct got_error*		cmd_revert(int, char *[]);
139 static const struct got_error*		cmd_commit(int, char *[]);
140 static const struct got_error*		cmd_send(int, char *[]);
141 static const struct got_error*		cmd_cherrypick(int, char *[]);
142 static const struct got_error*		cmd_backout(int, char *[]);
143 static const struct got_error*		cmd_rebase(int, char *[]);
144 static const struct got_error*		cmd_histedit(int, char *[]);
145 static const struct got_error*		cmd_integrate(int, char *[]);
146 static const struct got_error*		cmd_merge(int, char *[]);
147 static const struct got_error*		cmd_stage(int, char *[]);
148 static const struct got_error*		cmd_unstage(int, char *[]);
149 static const struct got_error*		cmd_cat(int, char *[]);
150 static const struct got_error*		cmd_info(int, char *[]);
151 
152 static const struct got_cmd got_commands[] = {
153 	{ "import",	cmd_import,	usage_import,	"im" },
154 	{ "clone",	cmd_clone,	usage_clone,	"cl" },
155 	{ "fetch",	cmd_fetch,	usage_fetch,	"fe" },
156 	{ "checkout",	cmd_checkout,	usage_checkout,	"co" },
157 	{ "update",	cmd_update,	usage_update,	"up" },
158 	{ "log",	cmd_log,	usage_log,	"" },
159 	{ "diff",	cmd_diff,	usage_diff,	"di" },
160 	{ "blame",	cmd_blame,	usage_blame,	"bl" },
161 	{ "tree",	cmd_tree,	usage_tree,	"tr" },
162 	{ "status",	cmd_status,	usage_status,	"st" },
163 	{ "ref",	cmd_ref,	usage_ref,	"" },
164 	{ "branch",	cmd_branch,	usage_branch,	"br" },
165 	{ "tag",	cmd_tag,	usage_tag,	"" },
166 	{ "add",	cmd_add,	usage_add,	"" },
167 	{ "remove",	cmd_remove,	usage_remove,	"rm" },
168 	{ "patch",	cmd_patch,	usage_patch,	"pa" },
169 	{ "revert",	cmd_revert,	usage_revert,	"rv" },
170 	{ "commit",	cmd_commit,	usage_commit,	"ci" },
171 	{ "send",	cmd_send,	usage_send,	"se" },
172 	{ "cherrypick",	cmd_cherrypick,	usage_cherrypick, "cy" },
173 	{ "backout",	cmd_backout,	usage_backout,	"bo" },
174 	{ "rebase",	cmd_rebase,	usage_rebase,	"rb" },
175 	{ "histedit",	cmd_histedit,	usage_histedit,	"he" },
176 	{ "integrate",  cmd_integrate,  usage_integrate,"ig" },
177 	{ "merge",	cmd_merge,	usage_merge,	"mg" },
178 	{ "stage",	cmd_stage,	usage_stage,	"sg" },
179 	{ "unstage",	cmd_unstage,	usage_unstage,	"ug" },
180 	{ "cat",	cmd_cat,	usage_cat,	"" },
181 	{ "info",	cmd_info,	usage_info,	"" },
182 };
183 
184 static void
185 list_commands(FILE *fp)
186 {
187 	size_t i;
188 
189 	fprintf(fp, "commands:");
190 	for (i = 0; i < nitems(got_commands); i++) {
191 		const struct got_cmd *cmd = &got_commands[i];
192 		fprintf(fp, " %s", cmd->cmd_name);
193 	}
194 	fputc('\n', fp);
195 }
196 
197 __dead static void
198 option_conflict(char a, char b)
199 {
200 	errx(1, "-%c and -%c options are mutually exclusive", a, b);
201 }
202 
203 int
204 main(int argc, char *argv[])
205 {
206 	const struct got_cmd *cmd;
207 	size_t i;
208 	int ch;
209 	int hflag = 0, Vflag = 0;
210 	static const struct option longopts[] = {
211 	    { "version", no_argument, NULL, 'V' },
212 	    { NULL, 0, NULL, 0 }
213 	};
214 
215 	setlocale(LC_CTYPE, "");
216 
217 	while ((ch = getopt_long(argc, argv, "+hV", longopts, NULL)) != -1) {
218 		switch (ch) {
219 		case 'h':
220 			hflag = 1;
221 			break;
222 		case 'V':
223 			Vflag = 1;
224 			break;
225 		default:
226 			usage(hflag, 1);
227 			/* NOTREACHED */
228 		}
229 	}
230 
231 	argc -= optind;
232 	argv += optind;
233 	optind = 1;
234 	optreset = 1;
235 
236 	if (Vflag) {
237 		got_version_print_str();
238 		return 0;
239 	}
240 
241 	if (argc <= 0)
242 		usage(hflag, hflag ? 0 : 1);
243 
244 	signal(SIGINT, catch_sigint);
245 	signal(SIGPIPE, catch_sigpipe);
246 
247 	for (i = 0; i < nitems(got_commands); i++) {
248 		const struct got_error *error;
249 
250 		cmd = &got_commands[i];
251 
252 		if (strcmp(cmd->cmd_name, argv[0]) != 0 &&
253 		    strcmp(cmd->cmd_alias, argv[0]) != 0)
254 			continue;
255 
256 		if (hflag)
257 			cmd->cmd_usage();
258 
259 		error = cmd->cmd_main(argc, argv);
260 		if (error && error->code != GOT_ERR_CANCELLED &&
261 		    error->code != GOT_ERR_PRIVSEP_EXIT &&
262 		    !(sigpipe_received &&
263 		      error->code == GOT_ERR_ERRNO && errno == EPIPE) &&
264 		    !(sigint_received &&
265 		      error->code == GOT_ERR_ERRNO && errno == EINTR)) {
266 			fprintf(stderr, "%s: %s\n", getprogname(), error->msg);
267 			return 1;
268 		}
269 
270 		return 0;
271 	}
272 
273 	fprintf(stderr, "%s: unknown command '%s'\n", getprogname(), argv[0]);
274 	list_commands(stderr);
275 	return 1;
276 }
277 
278 __dead static void
279 usage(int hflag, int status)
280 {
281 	FILE *fp = (status == 0) ? stdout : stderr;
282 
283 	fprintf(fp, "usage: %s [-h] [-V | --version] command [arg ...]\n",
284 	    getprogname());
285 	if (hflag)
286 		list_commands(fp);
287 	exit(status);
288 }
289 
290 static const struct got_error *
291 get_editor(char **abspath)
292 {
293 	const struct got_error *err = NULL;
294 	const char *editor;
295 
296 	*abspath = NULL;
297 
298 	editor = getenv("VISUAL");
299 	if (editor == NULL)
300 		editor = getenv("EDITOR");
301 
302 	if (editor) {
303 		err = got_path_find_prog(abspath, editor);
304 		if (err)
305 			return err;
306 	}
307 
308 	if (*abspath == NULL) {
309 		*abspath = strdup("/bin/ed");
310 		if (*abspath == NULL)
311 			return got_error_from_errno("strdup");
312 	}
313 
314 	return NULL;
315 }
316 
317 static const struct got_error *
318 apply_unveil(const char *repo_path, int repo_read_only,
319     const char *worktree_path)
320 {
321 	const struct got_error *err;
322 
323 #ifdef PROFILE
324 	if (unveil("gmon.out", "rwc") != 0)
325 		return got_error_from_errno2("unveil", "gmon.out");
326 #endif
327 	if (repo_path && unveil(repo_path, repo_read_only ? "r" : "rwc") != 0)
328 		return got_error_from_errno2("unveil", repo_path);
329 
330 	if (worktree_path && unveil(worktree_path, "rwc") != 0)
331 		return got_error_from_errno2("unveil", worktree_path);
332 
333 	if (unveil(GOT_TMPDIR_STR, "rwc") != 0)
334 		return got_error_from_errno2("unveil", GOT_TMPDIR_STR);
335 
336 	err = got_privsep_unveil_exec_helpers();
337 	if (err != NULL)
338 		return err;
339 
340 	if (unveil(NULL, NULL) != 0)
341 		return got_error_from_errno("unveil");
342 
343 	return NULL;
344 }
345 
346 __dead static void
347 usage_import(void)
348 {
349 	fprintf(stderr, "usage: %s import [-b branch] [-m message] "
350 	    "[-r repository-path] [-I pattern] path\n", getprogname());
351 	exit(1);
352 }
353 
354 static int
355 spawn_editor(const char *editor, const char *file)
356 {
357 	pid_t pid;
358 	sig_t sighup, sigint, sigquit;
359 	int st = -1;
360 
361 	sighup = signal(SIGHUP, SIG_IGN);
362 	sigint = signal(SIGINT, SIG_IGN);
363 	sigquit = signal(SIGQUIT, SIG_IGN);
364 
365 	switch (pid = fork()) {
366 	case -1:
367 		goto doneediting;
368 	case 0:
369 		execl(editor, editor, file, (char *)NULL);
370 		_exit(127);
371 	}
372 
373 	while (waitpid(pid, &st, 0) == -1)
374 		if (errno != EINTR)
375 			break;
376 
377 doneediting:
378 	(void)signal(SIGHUP, sighup);
379 	(void)signal(SIGINT, sigint);
380 	(void)signal(SIGQUIT, sigquit);
381 
382 	if (!WIFEXITED(st)) {
383 		errno = EINTR;
384 		return -1;
385 	}
386 
387 	return WEXITSTATUS(st);
388 }
389 
390 static const struct got_error *
391 edit_logmsg(char **logmsg, const char *editor, const char *logmsg_path,
392     const char *initial_content, size_t initial_content_len,
393     int require_modification)
394 {
395 	const struct got_error *err = NULL;
396 	char *line = NULL;
397 	size_t linesize = 0;
398 	ssize_t linelen;
399 	struct stat st, st2;
400 	FILE *fp = NULL;
401 	size_t len, logmsg_len;
402 	char *initial_content_stripped = NULL, *buf = NULL, *s;
403 
404 	*logmsg = NULL;
405 
406 	if (stat(logmsg_path, &st) == -1)
407 		return got_error_from_errno2("stat", logmsg_path);
408 
409 	if (spawn_editor(editor, logmsg_path) == -1)
410 		return got_error_from_errno("failed spawning editor");
411 
412 	if (stat(logmsg_path, &st2) == -1)
413 		return got_error_from_errno("stat");
414 
415 	if (require_modification &&
416 	    st.st_mtime == st2.st_mtime && st.st_size == st2.st_size)
417 		return got_error_msg(GOT_ERR_COMMIT_MSG_EMPTY,
418 		    "no changes made to commit message, aborting");
419 
420 	/*
421 	 * Set up a stripped version of the initial content without comments
422 	 * and blank lines. We need this in order to check if the message
423 	 * has in fact been edited.
424 	 */
425 	initial_content_stripped = malloc(initial_content_len + 1);
426 	if (initial_content_stripped == NULL)
427 		return got_error_from_errno("malloc");
428 	initial_content_stripped[0] = '\0';
429 
430 	buf = strdup(initial_content);
431 	if (buf == NULL) {
432 		err = got_error_from_errno("strdup");
433 		goto done;
434 	}
435 	s = buf;
436 	len = 0;
437 	while ((line = strsep(&s, "\n")) != NULL) {
438 		if ((line[0] == '#' || (len == 0 && line[0] == '\n')))
439 			continue; /* remove comments and leading empty lines */
440 		len = strlcat(initial_content_stripped, line,
441 		    initial_content_len + 1);
442 		if (len >= initial_content_len + 1) {
443 			err = got_error(GOT_ERR_NO_SPACE);
444 			goto done;
445 		}
446 	}
447 	while (len > 0 && initial_content_stripped[len - 1] == '\n') {
448 		initial_content_stripped[len - 1] = '\0';
449 		len--;
450 	}
451 
452 	logmsg_len = st2.st_size;
453 	*logmsg = malloc(logmsg_len + 1);
454 	if (*logmsg == NULL)
455 		return got_error_from_errno("malloc");
456 	(*logmsg)[0] = '\0';
457 
458 	fp = fopen(logmsg_path, "re");
459 	if (fp == NULL) {
460 		err = got_error_from_errno("fopen");
461 		goto done;
462 	}
463 
464 	len = 0;
465 	while ((linelen = getline(&line, &linesize, fp)) != -1) {
466 		if ((line[0] == '#' || (len == 0 && line[0] == '\n')))
467 			continue; /* remove comments and leading empty lines */
468 		len = strlcat(*logmsg, line, logmsg_len + 1);
469 		if (len >= logmsg_len + 1) {
470 			err = got_error(GOT_ERR_NO_SPACE);
471 			goto done;
472 		}
473 	}
474 	free(line);
475 	if (ferror(fp)) {
476 		err = got_ferror(fp, GOT_ERR_IO);
477 		goto done;
478 	}
479 	while (len > 0 && (*logmsg)[len - 1] == '\n') {
480 		(*logmsg)[len - 1] = '\0';
481 		len--;
482 	}
483 
484 	if (len == 0) {
485 		err = got_error_msg(GOT_ERR_COMMIT_MSG_EMPTY,
486 		    "commit message cannot be empty, aborting");
487 		goto done;
488 	}
489 	if (require_modification &&
490 	    strcmp(*logmsg, initial_content_stripped) == 0)
491 		err = got_error_msg(GOT_ERR_COMMIT_MSG_EMPTY,
492 		    "no changes made to commit message, aborting");
493 done:
494 	free(initial_content_stripped);
495 	free(buf);
496 	if (fp && fclose(fp) == EOF && err == NULL)
497 		err = got_error_from_errno("fclose");
498 	if (err) {
499 		free(*logmsg);
500 		*logmsg = NULL;
501 	}
502 	return err;
503 }
504 
505 static const struct got_error *
506 collect_import_msg(char **logmsg, char **logmsg_path, const char *editor,
507     const char *path_dir, const char *branch_name)
508 {
509 	char *initial_content = NULL;
510 	const struct got_error *err = NULL;
511 	int initial_content_len;
512 	int fd = -1;
513 
514 	initial_content_len = asprintf(&initial_content,
515 	    "\n# %s to be imported to branch %s\n", path_dir,
516 	    branch_name);
517 	if (initial_content_len == -1)
518 		return got_error_from_errno("asprintf");
519 
520 	err = got_opentemp_named_fd(logmsg_path, &fd,
521 	    GOT_TMPDIR_STR "/got-importmsg");
522 	if (err)
523 		goto done;
524 
525 	if (write(fd, initial_content, initial_content_len) == -1) {
526 		err = got_error_from_errno2("write", *logmsg_path);
527 		goto done;
528 	}
529 
530 	err = edit_logmsg(logmsg, editor, *logmsg_path, initial_content,
531 	    initial_content_len, 1);
532 done:
533 	if (fd != -1 && close(fd) == -1 && err == NULL)
534 		err = got_error_from_errno2("close", *logmsg_path);
535 	free(initial_content);
536 	if (err) {
537 		free(*logmsg_path);
538 		*logmsg_path = NULL;
539 	}
540 	return err;
541 }
542 
543 static const struct got_error *
544 import_progress(void *arg, const char *path)
545 {
546 	printf("A  %s\n", path);
547 	return NULL;
548 }
549 
550 static int
551 valid_author(const char *author)
552 {
553 	/*
554 	 * Really dumb email address check; we're only doing this to
555 	 * avoid git's object parser breaking on commits we create.
556 	 */
557 	while (*author && *author != '<')
558 		author++;
559 	if (*author != '<')
560 		return 0;
561 	while (*author && *author != '@')
562 		author++;
563 	if (*author != '@')
564 		return 0;
565 	while (*author && *author != '>')
566 		author++;
567 	return *author == '>';
568 }
569 
570 static const struct got_error *
571 get_author(char **author, struct got_repository *repo,
572     struct got_worktree *worktree)
573 {
574 	const struct got_error *err = NULL;
575 	const char *got_author = NULL, *name, *email;
576 	const struct got_gotconfig *worktree_conf = NULL, *repo_conf = NULL;
577 
578 	*author = NULL;
579 
580 	if (worktree)
581 		worktree_conf = got_worktree_get_gotconfig(worktree);
582 	repo_conf = got_repo_get_gotconfig(repo);
583 
584 	/*
585 	 * Priority of potential author information sources, from most
586 	 * significant to least significant:
587 	 * 1) work tree's .got/got.conf file
588 	 * 2) repository's got.conf file
589 	 * 3) repository's git config file
590 	 * 4) environment variables
591 	 * 5) global git config files (in user's home directory or /etc)
592 	 */
593 
594 	if (worktree_conf)
595 		got_author = got_gotconfig_get_author(worktree_conf);
596 	if (got_author == NULL)
597 		got_author = got_gotconfig_get_author(repo_conf);
598 	if (got_author == NULL) {
599 		name = got_repo_get_gitconfig_author_name(repo);
600 		email = got_repo_get_gitconfig_author_email(repo);
601 		if (name && email) {
602 			if (asprintf(author, "%s <%s>", name, email) == -1)
603 				return got_error_from_errno("asprintf");
604 			return NULL;
605 		}
606 
607 		got_author = getenv("GOT_AUTHOR");
608 		if (got_author == NULL) {
609 			name = got_repo_get_global_gitconfig_author_name(repo);
610 			email = got_repo_get_global_gitconfig_author_email(
611 			    repo);
612 			if (name && email) {
613 				if (asprintf(author, "%s <%s>", name, email)
614 				    == -1)
615 					return got_error_from_errno("asprintf");
616 				return NULL;
617 			}
618 			/* TODO: Look up user in password database? */
619 			return got_error(GOT_ERR_COMMIT_NO_AUTHOR);
620 		}
621 	}
622 
623 	*author = strdup(got_author);
624 	if (*author == NULL)
625 		return got_error_from_errno("strdup");
626 
627 	if (!valid_author(*author)) {
628 		err = got_error_fmt(GOT_ERR_COMMIT_NO_EMAIL, "%s", *author);
629 		free(*author);
630 		*author = NULL;
631 	}
632 	return err;
633 }
634 
635 static const struct got_error *
636 get_allowed_signers(char **allowed_signers, struct got_repository *repo,
637     struct got_worktree *worktree)
638 {
639 	const char *got_allowed_signers = NULL;
640 	const struct got_gotconfig *worktree_conf = NULL, *repo_conf = NULL;
641 
642 	*allowed_signers = NULL;
643 
644 	if (worktree)
645 		worktree_conf = got_worktree_get_gotconfig(worktree);
646 	repo_conf = got_repo_get_gotconfig(repo);
647 
648 	/*
649 	 * Priority of potential author information sources, from most
650 	 * significant to least significant:
651 	 * 1) work tree's .got/got.conf file
652 	 * 2) repository's got.conf file
653 	 */
654 
655 	if (worktree_conf)
656 		got_allowed_signers = got_gotconfig_get_allowed_signers_file(
657 		    worktree_conf);
658 	if (got_allowed_signers == NULL)
659 		got_allowed_signers = got_gotconfig_get_allowed_signers_file(
660 		    repo_conf);
661 
662 	if (got_allowed_signers) {
663 		*allowed_signers = strdup(got_allowed_signers);
664 		if (*allowed_signers == NULL)
665 			return got_error_from_errno("strdup");
666 	}
667 	return NULL;
668 }
669 
670 static const struct got_error *
671 get_revoked_signers(char **revoked_signers, struct got_repository *repo,
672     struct got_worktree *worktree)
673 {
674 	const char *got_revoked_signers = NULL;
675 	const struct got_gotconfig *worktree_conf = NULL, *repo_conf = NULL;
676 
677 	*revoked_signers = NULL;
678 
679 	if (worktree)
680 		worktree_conf = got_worktree_get_gotconfig(worktree);
681 	repo_conf = got_repo_get_gotconfig(repo);
682 
683 	/*
684 	 * Priority of potential author information sources, from most
685 	 * significant to least significant:
686 	 * 1) work tree's .got/got.conf file
687 	 * 2) repository's got.conf file
688 	 */
689 
690 	if (worktree_conf)
691 		got_revoked_signers = got_gotconfig_get_revoked_signers_file(
692 		    worktree_conf);
693 	if (got_revoked_signers == NULL)
694 		got_revoked_signers = got_gotconfig_get_revoked_signers_file(
695 		    repo_conf);
696 
697 	if (got_revoked_signers) {
698 		*revoked_signers = strdup(got_revoked_signers);
699 		if (*revoked_signers == NULL)
700 			return got_error_from_errno("strdup");
701 	}
702 	return NULL;
703 }
704 
705 static const struct got_error *
706 get_gitconfig_path(char **gitconfig_path)
707 {
708 	const char *homedir = getenv("HOME");
709 
710 	*gitconfig_path = NULL;
711 	if (homedir) {
712 		if (asprintf(gitconfig_path, "%s/.gitconfig", homedir) == -1)
713 			return got_error_from_errno("asprintf");
714 
715 	}
716 	return NULL;
717 }
718 
719 static const struct got_error *
720 cmd_import(int argc, char *argv[])
721 {
722 	const struct got_error *error = NULL;
723 	char *path_dir = NULL, *repo_path = NULL, *logmsg = NULL;
724 	char *gitconfig_path = NULL, *editor = NULL, *author = NULL;
725 	const char *branch_name = "main";
726 	char *refname = NULL, *id_str = NULL, *logmsg_path = NULL;
727 	struct got_repository *repo = NULL;
728 	struct got_reference *branch_ref = NULL, *head_ref = NULL;
729 	struct got_object_id *new_commit_id = NULL;
730 	int ch;
731 	struct got_pathlist_head ignores;
732 	struct got_pathlist_entry *pe;
733 	int preserve_logmsg = 0;
734 	int *pack_fds = NULL;
735 
736 	TAILQ_INIT(&ignores);
737 
738 	while ((ch = getopt(argc, argv, "b:m:r:I:")) != -1) {
739 		switch (ch) {
740 		case 'b':
741 			branch_name = optarg;
742 			break;
743 		case 'm':
744 			logmsg = strdup(optarg);
745 			if (logmsg == NULL) {
746 				error = got_error_from_errno("strdup");
747 				goto done;
748 			}
749 			break;
750 		case 'r':
751 			repo_path = realpath(optarg, NULL);
752 			if (repo_path == NULL) {
753 				error = got_error_from_errno2("realpath",
754 				    optarg);
755 				goto done;
756 			}
757 			break;
758 		case 'I':
759 			if (optarg[0] == '\0')
760 				break;
761 			error = got_pathlist_insert(&pe, &ignores, optarg,
762 			    NULL);
763 			if (error)
764 				goto done;
765 			break;
766 		default:
767 			usage_import();
768 			/* NOTREACHED */
769 		}
770 	}
771 
772 	argc -= optind;
773 	argv += optind;
774 
775 #ifndef PROFILE
776 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
777 	    "unveil",
778 	    NULL) == -1)
779 		err(1, "pledge");
780 #endif
781 	if (argc != 1)
782 		usage_import();
783 
784 	if (repo_path == NULL) {
785 		repo_path = getcwd(NULL, 0);
786 		if (repo_path == NULL)
787 			return got_error_from_errno("getcwd");
788 	}
789 	got_path_strip_trailing_slashes(repo_path);
790 	error = get_gitconfig_path(&gitconfig_path);
791 	if (error)
792 		goto done;
793 	error = got_repo_pack_fds_open(&pack_fds);
794 	if (error != NULL)
795 		goto done;
796 	error = got_repo_open(&repo, repo_path, gitconfig_path, pack_fds);
797 	if (error)
798 		goto done;
799 
800 	error = get_author(&author, repo, NULL);
801 	if (error)
802 		return error;
803 
804 	/*
805 	 * Don't let the user create a branch name with a leading '-'.
806 	 * While technically a valid reference name, this case is usually
807 	 * an unintended typo.
808 	 */
809 	if (branch_name[0] == '-')
810 		return got_error_path(branch_name, GOT_ERR_REF_NAME_MINUS);
811 
812 	if (asprintf(&refname, "refs/heads/%s", branch_name) == -1) {
813 		error = got_error_from_errno("asprintf");
814 		goto done;
815 	}
816 
817 	error = got_ref_open(&branch_ref, repo, refname, 0);
818 	if (error) {
819 		if (error->code != GOT_ERR_NOT_REF)
820 			goto done;
821 	} else {
822 		error = got_error_msg(GOT_ERR_BRANCH_EXISTS,
823 		    "import target branch already exists");
824 		goto done;
825 	}
826 
827 	path_dir = realpath(argv[0], NULL);
828 	if (path_dir == NULL) {
829 		error = got_error_from_errno2("realpath", argv[0]);
830 		goto done;
831 	}
832 	got_path_strip_trailing_slashes(path_dir);
833 
834 	/*
835 	 * unveil(2) traverses exec(2); if an editor is used we have
836 	 * to apply unveil after the log message has been written.
837 	 */
838 	if (logmsg == NULL || strlen(logmsg) == 0) {
839 		error = get_editor(&editor);
840 		if (error)
841 			goto done;
842 		free(logmsg);
843 		error = collect_import_msg(&logmsg, &logmsg_path, editor,
844 		    path_dir, refname);
845 		if (error) {
846 			if (error->code != GOT_ERR_COMMIT_MSG_EMPTY &&
847 			    logmsg_path != NULL)
848 				preserve_logmsg = 1;
849 			goto done;
850 		}
851 	}
852 
853 	if (unveil(path_dir, "r") != 0) {
854 		error = got_error_from_errno2("unveil", path_dir);
855 		if (logmsg_path)
856 			preserve_logmsg = 1;
857 		goto done;
858 	}
859 
860 	error = apply_unveil(got_repo_get_path(repo), 0, NULL);
861 	if (error) {
862 		if (logmsg_path)
863 			preserve_logmsg = 1;
864 		goto done;
865 	}
866 
867 	error = got_repo_import(&new_commit_id, path_dir, logmsg,
868 	    author, &ignores, repo, import_progress, NULL);
869 	if (error) {
870 		if (logmsg_path)
871 			preserve_logmsg = 1;
872 		goto done;
873 	}
874 
875 	error = got_ref_alloc(&branch_ref, refname, new_commit_id);
876 	if (error) {
877 		if (logmsg_path)
878 			preserve_logmsg = 1;
879 		goto done;
880 	}
881 
882 	error = got_ref_write(branch_ref, repo);
883 	if (error) {
884 		if (logmsg_path)
885 			preserve_logmsg = 1;
886 		goto done;
887 	}
888 
889 	error = got_object_id_str(&id_str, new_commit_id);
890 	if (error) {
891 		if (logmsg_path)
892 			preserve_logmsg = 1;
893 		goto done;
894 	}
895 
896 	error = got_ref_open(&head_ref, repo, GOT_REF_HEAD, 0);
897 	if (error) {
898 		if (error->code != GOT_ERR_NOT_REF) {
899 			if (logmsg_path)
900 				preserve_logmsg = 1;
901 			goto done;
902 		}
903 
904 		error = got_ref_alloc_symref(&head_ref, GOT_REF_HEAD,
905 		    branch_ref);
906 		if (error) {
907 			if (logmsg_path)
908 				preserve_logmsg = 1;
909 			goto done;
910 		}
911 
912 		error = got_ref_write(head_ref, repo);
913 		if (error) {
914 			if (logmsg_path)
915 				preserve_logmsg = 1;
916 			goto done;
917 		}
918 	}
919 
920 	printf("Created branch %s with commit %s\n",
921 	    got_ref_get_name(branch_ref), id_str);
922 done:
923 	if (pack_fds) {
924 		const struct got_error *pack_err =
925 		    got_repo_pack_fds_close(pack_fds);
926 		if (error == NULL)
927 			error = pack_err;
928 	}
929 	if (preserve_logmsg) {
930 		fprintf(stderr, "%s: log message preserved in %s\n",
931 		    getprogname(), logmsg_path);
932 	} else if (logmsg_path && unlink(logmsg_path) == -1 && error == NULL)
933 		error = got_error_from_errno2("unlink", logmsg_path);
934 	free(logmsg);
935 	free(logmsg_path);
936 	free(repo_path);
937 	free(editor);
938 	free(refname);
939 	free(new_commit_id);
940 	free(id_str);
941 	free(author);
942 	free(gitconfig_path);
943 	if (branch_ref)
944 		got_ref_close(branch_ref);
945 	if (head_ref)
946 		got_ref_close(head_ref);
947 	return error;
948 }
949 
950 __dead static void
951 usage_clone(void)
952 {
953 	fprintf(stderr, "usage: %s clone [-a] [-b branch] [-l] [-m] [-q] [-v] "
954 	    "[-R reference] repository-url [directory]\n", getprogname());
955 	exit(1);
956 }
957 
958 struct got_fetch_progress_arg {
959 	char last_scaled_size[FMT_SCALED_STRSIZE];
960 	int last_p_indexed;
961 	int last_p_resolved;
962 	int verbosity;
963 
964 	struct got_repository *repo;
965 
966 	int create_configs;
967 	int configs_created;
968 	struct {
969 		struct got_pathlist_head *symrefs;
970 		struct got_pathlist_head *wanted_branches;
971 		struct got_pathlist_head *wanted_refs;
972 		const char *proto;
973 		const char *host;
974 		const char *port;
975 		const char *remote_repo_path;
976 		const char *git_url;
977 		int fetch_all_branches;
978 		int mirror_references;
979 	} config_info;
980 };
981 
982 /* XXX forward declaration */
983 static const struct got_error *
984 create_config_files(const char *proto, const char *host, const char *port,
985     const char *remote_repo_path, const char *git_url, int fetch_all_branches,
986     int mirror_references, struct got_pathlist_head *symrefs,
987     struct got_pathlist_head *wanted_branches,
988     struct got_pathlist_head *wanted_refs, struct got_repository *repo);
989 
990 static const struct got_error *
991 fetch_progress(void *arg, const char *message, off_t packfile_size,
992     int nobj_total, int nobj_indexed, int nobj_loose, int nobj_resolved)
993 {
994 	const struct got_error *err = NULL;
995 	struct got_fetch_progress_arg *a = arg;
996 	char scaled_size[FMT_SCALED_STRSIZE];
997 	int p_indexed, p_resolved;
998 	int print_size = 0, print_indexed = 0, print_resolved = 0;
999 
1000 	/*
1001 	 * In order to allow a failed clone to be resumed with 'got fetch'
1002 	 * we try to create configuration files as soon as possible.
1003 	 * Once the server has sent information about its default branch
1004 	 * we have all required information.
1005 	 */
1006 	if (a->create_configs && !a->configs_created &&
1007 	    !TAILQ_EMPTY(a->config_info.symrefs)) {
1008 		err = create_config_files(a->config_info.proto,
1009 		    a->config_info.host, a->config_info.port,
1010 		    a->config_info.remote_repo_path,
1011 		    a->config_info.git_url,
1012 		    a->config_info.fetch_all_branches,
1013 		    a->config_info.mirror_references,
1014 		    a->config_info.symrefs,
1015 		    a->config_info.wanted_branches,
1016 		    a->config_info.wanted_refs, a->repo);
1017 		if (err)
1018 			return err;
1019 		a->configs_created = 1;
1020 	}
1021 
1022 	if (a->verbosity < 0)
1023 		return NULL;
1024 
1025 	if (message && message[0] != '\0') {
1026 		printf("\rserver: %s", message);
1027 		fflush(stdout);
1028 		return NULL;
1029 	}
1030 
1031 	if (packfile_size > 0 || nobj_indexed > 0) {
1032 		if (fmt_scaled(packfile_size, scaled_size) == 0 &&
1033 		    (a->last_scaled_size[0] == '\0' ||
1034 		    strcmp(scaled_size, a->last_scaled_size)) != 0) {
1035 			print_size = 1;
1036 			if (strlcpy(a->last_scaled_size, scaled_size,
1037 			    FMT_SCALED_STRSIZE) >= FMT_SCALED_STRSIZE)
1038 				return got_error(GOT_ERR_NO_SPACE);
1039 		}
1040 		if (nobj_indexed > 0) {
1041 			p_indexed = (nobj_indexed * 100) / nobj_total;
1042 			if (p_indexed != a->last_p_indexed) {
1043 				a->last_p_indexed = p_indexed;
1044 				print_indexed = 1;
1045 				print_size = 1;
1046 			}
1047 		}
1048 		if (nobj_resolved > 0) {
1049 			p_resolved = (nobj_resolved * 100) /
1050 			    (nobj_total - nobj_loose);
1051 			if (p_resolved != a->last_p_resolved) {
1052 				a->last_p_resolved = p_resolved;
1053 				print_resolved = 1;
1054 				print_indexed = 1;
1055 				print_size = 1;
1056 			}
1057 		}
1058 
1059 	}
1060 	if (print_size || print_indexed || print_resolved)
1061 		printf("\r");
1062 	if (print_size)
1063 		printf("%*s fetched", FMT_SCALED_STRSIZE - 2, scaled_size);
1064 	if (print_indexed)
1065 		printf("; indexing %d%%", p_indexed);
1066 	if (print_resolved)
1067 		printf("; resolving deltas %d%%", p_resolved);
1068 	if (print_size || print_indexed || print_resolved)
1069 		fflush(stdout);
1070 
1071 	return NULL;
1072 }
1073 
1074 static const struct got_error *
1075 create_symref(const char *refname, struct got_reference *target_ref,
1076     int verbosity, struct got_repository *repo)
1077 {
1078 	const struct got_error *err;
1079 	struct got_reference *head_symref;
1080 
1081 	err = got_ref_alloc_symref(&head_symref, refname, target_ref);
1082 	if (err)
1083 		return err;
1084 
1085 	err = got_ref_write(head_symref, repo);
1086 	if (err == NULL && verbosity > 0) {
1087 		printf("Created reference %s: %s\n", GOT_REF_HEAD,
1088 		    got_ref_get_name(target_ref));
1089 	}
1090 	got_ref_close(head_symref);
1091 	return err;
1092 }
1093 
1094 static const struct got_error *
1095 list_remote_refs(struct got_pathlist_head *symrefs,
1096     struct got_pathlist_head *refs)
1097 {
1098 	const struct got_error *err;
1099 	struct got_pathlist_entry *pe;
1100 
1101 	TAILQ_FOREACH(pe, symrefs, entry) {
1102 		const char *refname = pe->path;
1103 		const char *targetref = pe->data;
1104 
1105 		printf("%s: %s\n", refname, targetref);
1106 	}
1107 
1108 	TAILQ_FOREACH(pe, refs, entry) {
1109 		const char *refname = pe->path;
1110 		struct got_object_id *id = pe->data;
1111 		char *id_str;
1112 
1113 		err = got_object_id_str(&id_str, id);
1114 		if (err)
1115 			return err;
1116 		printf("%s: %s\n", refname, id_str);
1117 		free(id_str);
1118 	}
1119 
1120 	return NULL;
1121 }
1122 
1123 static const struct got_error *
1124 create_ref(const char *refname, struct got_object_id *id,
1125     int verbosity, struct got_repository *repo)
1126 {
1127 	const struct got_error *err = NULL;
1128 	struct got_reference *ref;
1129 	char *id_str;
1130 
1131 	err = got_object_id_str(&id_str, id);
1132 	if (err)
1133 		return err;
1134 
1135 	err = got_ref_alloc(&ref, refname, id);
1136 	if (err)
1137 		goto done;
1138 
1139 	err = got_ref_write(ref, repo);
1140 	got_ref_close(ref);
1141 
1142 	if (err == NULL && verbosity >= 0)
1143 		printf("Created reference %s: %s\n", refname, id_str);
1144 done:
1145 	free(id_str);
1146 	return err;
1147 }
1148 
1149 static int
1150 match_wanted_ref(const char *refname, const char *wanted_ref)
1151 {
1152 	if (strncmp(refname, "refs/", 5) != 0)
1153 		return 0;
1154 	refname += 5;
1155 
1156 	/*
1157 	 * Prevent fetching of references that won't make any
1158 	 * sense outside of the remote repository's context.
1159 	 */
1160 	if (strncmp(refname, "got/", 4) == 0)
1161 		return 0;
1162 	if (strncmp(refname, "remotes/", 8) == 0)
1163 		return 0;
1164 
1165 	if (strncmp(wanted_ref, "refs/", 5) == 0)
1166 		wanted_ref += 5;
1167 
1168 	/* Allow prefix match. */
1169 	if (got_path_is_child(refname, wanted_ref, strlen(wanted_ref)))
1170 		return 1;
1171 
1172 	/* Allow exact match. */
1173 	return (strcmp(refname, wanted_ref) == 0);
1174 }
1175 
1176 static int
1177 is_wanted_ref(struct got_pathlist_head *wanted_refs, const char *refname)
1178 {
1179 	struct got_pathlist_entry *pe;
1180 
1181 	TAILQ_FOREACH(pe, wanted_refs, entry) {
1182 		if (match_wanted_ref(refname, pe->path))
1183 			return 1;
1184 	}
1185 
1186 	return 0;
1187 }
1188 
1189 static const struct got_error *
1190 create_wanted_ref(const char *refname, struct got_object_id *id,
1191     const char *remote_repo_name, int verbosity, struct got_repository *repo)
1192 {
1193 	const struct got_error *err;
1194 	char *remote_refname;
1195 
1196 	if (strncmp("refs/", refname, 5) == 0)
1197 		refname += 5;
1198 
1199 	if (asprintf(&remote_refname, "refs/remotes/%s/%s",
1200 	    remote_repo_name, refname) == -1)
1201 		return got_error_from_errno("asprintf");
1202 
1203 	err = create_ref(remote_refname, id, verbosity, repo);
1204 	free(remote_refname);
1205 	return err;
1206 }
1207 
1208 static const struct got_error *
1209 create_gotconfig(const char *proto, const char *host, const char *port,
1210     const char *remote_repo_path, const char *default_branch,
1211     int fetch_all_branches, struct got_pathlist_head *wanted_branches,
1212     struct got_pathlist_head *wanted_refs, int mirror_references,
1213     struct got_repository *repo)
1214 {
1215 	const struct got_error *err = NULL;
1216 	char *gotconfig_path = NULL;
1217 	char *gotconfig = NULL;
1218 	FILE *gotconfig_file = NULL;
1219 	const char *branchname = NULL;
1220 	char *branches = NULL, *refs = NULL;
1221 	ssize_t n;
1222 
1223 	if (!fetch_all_branches && !TAILQ_EMPTY(wanted_branches)) {
1224 		struct got_pathlist_entry *pe;
1225 		TAILQ_FOREACH(pe, wanted_branches, entry) {
1226 			char *s;
1227 			branchname = pe->path;
1228 			if (strncmp(branchname, "refs/heads/", 11) == 0)
1229 				branchname += 11;
1230 			if (asprintf(&s, "%s\"%s\" ",
1231 			    branches ? branches : "", branchname) == -1) {
1232 				err = got_error_from_errno("asprintf");
1233 				goto done;
1234 			}
1235 			free(branches);
1236 			branches = s;
1237 		}
1238 	} else if (!fetch_all_branches && default_branch) {
1239 		branchname = default_branch;
1240 		if (strncmp(branchname, "refs/heads/", 11) == 0)
1241 			branchname += 11;
1242 		if (asprintf(&branches, "\"%s\" ", branchname) == -1) {
1243 			err = got_error_from_errno("asprintf");
1244 			goto done;
1245 		}
1246 	}
1247 	if (!TAILQ_EMPTY(wanted_refs)) {
1248 		struct got_pathlist_entry *pe;
1249 		TAILQ_FOREACH(pe, wanted_refs, entry) {
1250 			char *s;
1251 			const char *refname = pe->path;
1252 			if (strncmp(refname, "refs/", 5) == 0)
1253 				branchname += 5;
1254 			if (asprintf(&s, "%s\"%s\" ",
1255 			    refs ? refs : "", refname) == -1) {
1256 				err = got_error_from_errno("asprintf");
1257 				goto done;
1258 			}
1259 			free(refs);
1260 			refs = s;
1261 		}
1262 	}
1263 
1264 	/* Create got.conf(5). */
1265 	gotconfig_path = got_repo_get_path_gotconfig(repo);
1266 	if (gotconfig_path == NULL) {
1267 		err = got_error_from_errno("got_repo_get_path_gotconfig");
1268 		goto done;
1269 	}
1270 	gotconfig_file = fopen(gotconfig_path, "ae");
1271 	if (gotconfig_file == NULL) {
1272 		err = got_error_from_errno2("fopen", gotconfig_path);
1273 		goto done;
1274 	}
1275 	if (asprintf(&gotconfig,
1276 	    "remote \"%s\" {\n"
1277 	    "\tserver %s\n"
1278 	    "\tprotocol %s\n"
1279 	    "%s%s%s"
1280 	    "\trepository \"%s\"\n"
1281 	    "%s%s%s"
1282 	    "%s%s%s"
1283 	    "%s"
1284 	    "%s"
1285 	    "}\n",
1286 	    GOT_FETCH_DEFAULT_REMOTE_NAME, host, proto,
1287 	    port ? "\tport " : "", port ? port : "", port ? "\n" : "",
1288 	    remote_repo_path, branches ? "\tbranch { " : "",
1289 	    branches ? branches : "", branches ? "}\n" : "", 
1290 	    refs ? "\treference { " : "", refs ? refs : "", refs ? "}\n" : "", 
1291 	    mirror_references ? "\tmirror_references yes\n" : "",
1292 	    fetch_all_branches ? "\tfetch_all_branches yes\n" : "") == -1) {
1293 		err = got_error_from_errno("asprintf");
1294 		goto done;
1295 	}
1296 	n = fwrite(gotconfig, 1, strlen(gotconfig), gotconfig_file);
1297 	if (n != strlen(gotconfig)) {
1298 		err = got_ferror(gotconfig_file, GOT_ERR_IO);
1299 		goto done;
1300 	}
1301 
1302 done:
1303 	if (gotconfig_file && fclose(gotconfig_file) == EOF && err == NULL)
1304 		err = got_error_from_errno2("fclose", gotconfig_path);
1305 	free(gotconfig_path);
1306 	free(branches);
1307 	return err;
1308 }
1309 
1310 static const struct got_error *
1311 create_gitconfig(const char *git_url, const char *default_branch,
1312     int fetch_all_branches, struct got_pathlist_head *wanted_branches,
1313     struct got_pathlist_head *wanted_refs, int mirror_references,
1314     struct got_repository *repo)
1315 {
1316 	const struct got_error *err = NULL;
1317 	char *gitconfig_path = NULL;
1318 	char *gitconfig = NULL;
1319 	FILE *gitconfig_file = NULL;
1320 	char *branches = NULL, *refs = NULL;
1321 	const char *branchname;
1322 	ssize_t n;
1323 
1324 	/* Create a config file Git can understand. */
1325 	gitconfig_path = got_repo_get_path_gitconfig(repo);
1326 	if (gitconfig_path == NULL) {
1327 		err = got_error_from_errno("got_repo_get_path_gitconfig");
1328 		goto done;
1329 	}
1330 	gitconfig_file = fopen(gitconfig_path, "ae");
1331 	if (gitconfig_file == NULL) {
1332 		err = got_error_from_errno2("fopen", gitconfig_path);
1333 		goto done;
1334 	}
1335 	if (fetch_all_branches) {
1336 		if (mirror_references) {
1337 			if (asprintf(&branches,
1338 			    "\tfetch = refs/heads/*:refs/heads/*\n") == -1) {
1339 				err = got_error_from_errno("asprintf");
1340 				goto done;
1341 			}
1342 		} else if (asprintf(&branches,
1343 		    "\tfetch = refs/heads/*:refs/remotes/%s/*\n",
1344 		    GOT_FETCH_DEFAULT_REMOTE_NAME) == -1) {
1345 			err = got_error_from_errno("asprintf");
1346 			goto done;
1347 		}
1348 	} else if (!TAILQ_EMPTY(wanted_branches)) {
1349 		struct got_pathlist_entry *pe;
1350 		TAILQ_FOREACH(pe, wanted_branches, entry) {
1351 			char *s;
1352 			branchname = pe->path;
1353 			if (strncmp(branchname, "refs/heads/", 11) == 0)
1354 				branchname += 11;
1355 			if (mirror_references) {
1356 				if (asprintf(&s,
1357 				    "%s\tfetch = refs/heads/%s:refs/heads/%s\n",
1358 				    branches ? branches : "",
1359 				    branchname, branchname) == -1) {
1360 					err = got_error_from_errno("asprintf");
1361 					goto done;
1362 				}
1363 			} else if (asprintf(&s,
1364 			    "%s\tfetch = refs/heads/%s:refs/remotes/%s/%s\n",
1365 			    branches ? branches : "",
1366 			    branchname, GOT_FETCH_DEFAULT_REMOTE_NAME,
1367 			    branchname) == -1) {
1368 				err = got_error_from_errno("asprintf");
1369 				goto done;
1370 			}
1371 			free(branches);
1372 			branches = s;
1373 		}
1374 	} else {
1375 		/*
1376 		 * If the server specified a default branch, use just that one.
1377 		 * Otherwise fall back to fetching all branches on next fetch.
1378 		 */
1379 		if (default_branch) {
1380 			branchname = default_branch;
1381 			if (strncmp(branchname, "refs/heads/", 11) == 0)
1382 				branchname += 11;
1383 		} else
1384 			branchname = "*"; /* fall back to all branches */
1385 		if (mirror_references) {
1386 			if (asprintf(&branches,
1387 			    "\tfetch = refs/heads/%s:refs/heads/%s\n",
1388 			    branchname, branchname) == -1) {
1389 				err = got_error_from_errno("asprintf");
1390 				goto done;
1391 			}
1392 		} else if (asprintf(&branches,
1393 		    "\tfetch = refs/heads/%s:refs/remotes/%s/%s\n",
1394 		    branchname, GOT_FETCH_DEFAULT_REMOTE_NAME,
1395 		    branchname) == -1) {
1396 			err = got_error_from_errno("asprintf");
1397 			goto done;
1398 		}
1399 	}
1400 	if (!TAILQ_EMPTY(wanted_refs)) {
1401 		struct got_pathlist_entry *pe;
1402 		TAILQ_FOREACH(pe, wanted_refs, entry) {
1403 			char *s;
1404 			const char *refname = pe->path;
1405 			if (strncmp(refname, "refs/", 5) == 0)
1406 				refname += 5;
1407 			if (mirror_references) {
1408 				if (asprintf(&s,
1409 				    "%s\tfetch = refs/%s:refs/%s\n",
1410 				    refs ? refs : "", refname, refname) == -1) {
1411 					err = got_error_from_errno("asprintf");
1412 					goto done;
1413 				}
1414 			} else if (asprintf(&s,
1415 			    "%s\tfetch = refs/%s:refs/remotes/%s/%s\n",
1416 			    refs ? refs : "",
1417 			    refname, GOT_FETCH_DEFAULT_REMOTE_NAME,
1418 			    refname) == -1) {
1419 				err = got_error_from_errno("asprintf");
1420 				goto done;
1421 			}
1422 			free(refs);
1423 			refs = s;
1424 		}
1425 	}
1426 
1427 	if (asprintf(&gitconfig,
1428 	    "[remote \"%s\"]\n"
1429 	    "\turl = %s\n"
1430 	    "%s"
1431 	    "%s"
1432 	    "\tfetch = refs/tags/*:refs/tags/*\n",
1433 	    GOT_FETCH_DEFAULT_REMOTE_NAME, git_url, branches ? branches : "",
1434 	    refs ? refs : "") == -1) {
1435 		err = got_error_from_errno("asprintf");
1436 		goto done;
1437 	}
1438 	n = fwrite(gitconfig, 1, strlen(gitconfig), gitconfig_file);
1439 	if (n != strlen(gitconfig)) {
1440 		err = got_ferror(gitconfig_file, GOT_ERR_IO);
1441 		goto done;
1442 	}
1443 done:
1444 	if (gitconfig_file && fclose(gitconfig_file) == EOF && err == NULL)
1445 		err = got_error_from_errno2("fclose", gitconfig_path);
1446 	free(gitconfig_path);
1447 	free(branches);
1448 	return err;
1449 }
1450 
1451 static const struct got_error *
1452 create_config_files(const char *proto, const char *host, const char *port,
1453     const char *remote_repo_path, const char *git_url, int fetch_all_branches,
1454     int mirror_references, struct got_pathlist_head *symrefs,
1455     struct got_pathlist_head *wanted_branches,
1456     struct got_pathlist_head *wanted_refs, struct got_repository *repo)
1457 {
1458 	const struct got_error *err = NULL;
1459 	const char *default_branch = NULL;
1460 	struct got_pathlist_entry *pe;
1461 
1462 	/*
1463 	 * If we asked for a set of wanted branches then use the first
1464 	 * one of those.
1465 	 */
1466 	if (!TAILQ_EMPTY(wanted_branches)) {
1467 		pe = TAILQ_FIRST(wanted_branches);
1468 		default_branch = pe->path;
1469 	} else {
1470 		/* First HEAD ref listed by server is the default branch. */
1471 		TAILQ_FOREACH(pe, symrefs, entry) {
1472 			const char *refname = pe->path;
1473 			const char *target = pe->data;
1474 
1475 			if (strcmp(refname, GOT_REF_HEAD) != 0)
1476 				continue;
1477 
1478 			default_branch = target;
1479 			break;
1480 		}
1481 	}
1482 
1483 	/* Create got.conf(5). */
1484 	err = create_gotconfig(proto, host, port, remote_repo_path,
1485 	    default_branch, fetch_all_branches, wanted_branches,
1486 	    wanted_refs, mirror_references, repo);
1487 	if (err)
1488 		return err;
1489 
1490 	/* Create a config file Git can understand. */
1491 	return create_gitconfig(git_url, default_branch, fetch_all_branches,
1492 	    wanted_branches, wanted_refs, mirror_references, repo);
1493 }
1494 
1495 static const struct got_error *
1496 cmd_clone(int argc, char *argv[])
1497 {
1498 	const struct got_error *error = NULL;
1499 	const char *uri, *dirname;
1500 	char *proto, *host, *port, *repo_name, *server_path;
1501 	char *default_destdir = NULL, *id_str = NULL;
1502 	const char *repo_path;
1503 	struct got_repository *repo = NULL;
1504 	struct got_pathlist_head refs, symrefs, wanted_branches, wanted_refs;
1505 	struct got_pathlist_entry *pe;
1506 	struct got_object_id *pack_hash = NULL;
1507 	int ch, fetchfd = -1, fetchstatus;
1508 	pid_t fetchpid = -1;
1509 	struct got_fetch_progress_arg fpa;
1510 	char *git_url = NULL;
1511 	int verbosity = 0, fetch_all_branches = 0, mirror_references = 0;
1512 	int list_refs_only = 0;
1513 	int *pack_fds = NULL;
1514 
1515 	TAILQ_INIT(&refs);
1516 	TAILQ_INIT(&symrefs);
1517 	TAILQ_INIT(&wanted_branches);
1518 	TAILQ_INIT(&wanted_refs);
1519 
1520 	while ((ch = getopt(argc, argv, "ab:lmvqR:")) != -1) {
1521 		switch (ch) {
1522 		case 'a':
1523 			fetch_all_branches = 1;
1524 			break;
1525 		case 'b':
1526 			error = got_pathlist_append(&wanted_branches,
1527 			    optarg, NULL);
1528 			if (error)
1529 				return error;
1530 			break;
1531 		case 'l':
1532 			list_refs_only = 1;
1533 			break;
1534 		case 'm':
1535 			mirror_references = 1;
1536 			break;
1537 		case 'v':
1538 			if (verbosity < 0)
1539 				verbosity = 0;
1540 			else if (verbosity < 3)
1541 				verbosity++;
1542 			break;
1543 		case 'q':
1544 			verbosity = -1;
1545 			break;
1546 		case 'R':
1547 			error = got_pathlist_append(&wanted_refs,
1548 			    optarg, NULL);
1549 			if (error)
1550 				return error;
1551 			break;
1552 		default:
1553 			usage_clone();
1554 			break;
1555 		}
1556 	}
1557 	argc -= optind;
1558 	argv += optind;
1559 
1560 	if (fetch_all_branches && !TAILQ_EMPTY(&wanted_branches))
1561 		option_conflict('a', 'b');
1562 	if (list_refs_only) {
1563 		if (!TAILQ_EMPTY(&wanted_branches))
1564 			option_conflict('l', 'b');
1565 		if (fetch_all_branches)
1566 			option_conflict('l', 'a');
1567 		if (mirror_references)
1568 			option_conflict('l', 'm');
1569 		if (!TAILQ_EMPTY(&wanted_refs))
1570 			option_conflict('l', 'R');
1571 	}
1572 
1573 	uri = argv[0];
1574 
1575 	if (argc == 1)
1576 		dirname = NULL;
1577 	else if (argc == 2)
1578 		dirname = argv[1];
1579 	else
1580 		usage_clone();
1581 
1582 	error = got_dial_parse_uri(&proto, &host, &port, &server_path,
1583 	    &repo_name, uri);
1584 	if (error)
1585 		goto done;
1586 
1587 	if (asprintf(&git_url, "%s://%s%s%s%s%s", proto,
1588 	    host, port ? ":" : "", port ? port : "",
1589 	    server_path[0] != '/' ? "/" : "", server_path) == -1) {
1590 		error = got_error_from_errno("asprintf");
1591 		goto done;
1592 	}
1593 
1594 	if (strcmp(proto, "git") == 0) {
1595 #ifndef PROFILE
1596 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
1597 		    "sendfd dns inet unveil", NULL) == -1)
1598 			err(1, "pledge");
1599 #endif
1600 	} else if (strcmp(proto, "git+ssh") == 0 ||
1601 	    strcmp(proto, "ssh") == 0) {
1602 #ifndef PROFILE
1603 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
1604 		    "sendfd unveil", NULL) == -1)
1605 			err(1, "pledge");
1606 #endif
1607 	} else if (strcmp(proto, "http") == 0 ||
1608 	    strcmp(proto, "git+http") == 0) {
1609 		error = got_error_path(proto, GOT_ERR_NOT_IMPL);
1610 		goto done;
1611 	} else {
1612 		error = got_error_path(proto, GOT_ERR_BAD_PROTO);
1613 		goto done;
1614 	}
1615 	if (dirname == NULL) {
1616 		if (asprintf(&default_destdir, "%s.git", repo_name) == -1) {
1617 			error = got_error_from_errno("asprintf");
1618 			goto done;
1619 		}
1620 		repo_path = default_destdir;
1621 	} else
1622 		repo_path = dirname;
1623 
1624 	if (!list_refs_only) {
1625 		error = got_path_mkdir(repo_path);
1626 		if (error &&
1627 		    (!(error->code == GOT_ERR_ERRNO && errno == EISDIR) &&
1628 		    !(error->code == GOT_ERR_ERRNO && errno == EEXIST)))
1629 			goto done;
1630 		if (!got_path_dir_is_empty(repo_path)) {
1631 			error = got_error_path(repo_path,
1632 			    GOT_ERR_DIR_NOT_EMPTY);
1633 			goto done;
1634 		}
1635 	}
1636 
1637 	error = got_dial_apply_unveil(proto);
1638 	if (error)
1639 		goto done;
1640 
1641 	error = apply_unveil(repo_path, 0, NULL);
1642 	if (error)
1643 		goto done;
1644 
1645 	if (verbosity >= 0)
1646 		printf("Connecting to %s%s%s\n", host,
1647 		    port ? ":" : "", port ? port : "");
1648 
1649 	error = got_fetch_connect(&fetchpid, &fetchfd, proto, host, port,
1650 	    server_path, verbosity);
1651 	if (error)
1652 		goto done;
1653 
1654 	if (!list_refs_only) {
1655 		error = got_repo_init(repo_path);
1656 		if (error)
1657 			goto done;
1658 		error = got_repo_pack_fds_open(&pack_fds);
1659 		if (error != NULL)
1660 			goto done;
1661 		error = got_repo_open(&repo, repo_path, NULL, pack_fds);
1662 		if (error)
1663 			goto done;
1664 	}
1665 
1666 	fpa.last_scaled_size[0] = '\0';
1667 	fpa.last_p_indexed = -1;
1668 	fpa.last_p_resolved = -1;
1669 	fpa.verbosity = verbosity;
1670 	fpa.create_configs = 1;
1671 	fpa.configs_created = 0;
1672 	fpa.repo = repo;
1673 	fpa.config_info.symrefs = &symrefs;
1674 	fpa.config_info.wanted_branches = &wanted_branches;
1675 	fpa.config_info.wanted_refs = &wanted_refs;
1676 	fpa.config_info.proto = proto;
1677 	fpa.config_info.host = host;
1678 	fpa.config_info.port = port;
1679 	fpa.config_info.remote_repo_path = server_path;
1680 	fpa.config_info.git_url = git_url;
1681 	fpa.config_info.fetch_all_branches = fetch_all_branches;
1682 	fpa.config_info.mirror_references = mirror_references;
1683 	error = got_fetch_pack(&pack_hash, &refs, &symrefs,
1684 	    GOT_FETCH_DEFAULT_REMOTE_NAME, mirror_references,
1685 	    fetch_all_branches, &wanted_branches, &wanted_refs,
1686 	    list_refs_only, verbosity, fetchfd, repo,
1687 	    fetch_progress, &fpa);
1688 	if (error)
1689 		goto done;
1690 
1691 	if (list_refs_only) {
1692 		error = list_remote_refs(&symrefs, &refs);
1693 		goto done;
1694 	}
1695 
1696 	if (pack_hash == NULL) {
1697 		error = got_error_fmt(GOT_ERR_FETCH_FAILED, "%s",
1698 		    "server sent an empty pack file");
1699 		goto done;
1700 	}
1701 	error = got_object_id_str(&id_str, pack_hash);
1702 	if (error)
1703 		goto done;
1704 	if (verbosity >= 0)
1705 		printf("\nFetched %s.pack\n", id_str);
1706 	free(id_str);
1707 
1708 	/* Set up references provided with the pack file. */
1709 	TAILQ_FOREACH(pe, &refs, entry) {
1710 		const char *refname = pe->path;
1711 		struct got_object_id *id = pe->data;
1712 		char *remote_refname;
1713 
1714 		if (is_wanted_ref(&wanted_refs, refname) &&
1715 		    !mirror_references) {
1716 			error = create_wanted_ref(refname, id,
1717 			    GOT_FETCH_DEFAULT_REMOTE_NAME,
1718 			    verbosity - 1, repo);
1719 			if (error)
1720 				goto done;
1721 			continue;
1722 		}
1723 
1724 		error = create_ref(refname, id, verbosity - 1, repo);
1725 		if (error)
1726 			goto done;
1727 
1728 		if (mirror_references)
1729 			continue;
1730 
1731 		if (strncmp("refs/heads/", refname, 11) != 0)
1732 			continue;
1733 
1734 		if (asprintf(&remote_refname,
1735 		    "refs/remotes/%s/%s", GOT_FETCH_DEFAULT_REMOTE_NAME,
1736 		    refname + 11) == -1) {
1737 			error = got_error_from_errno("asprintf");
1738 			goto done;
1739 		}
1740 		error = create_ref(remote_refname, id, verbosity - 1, repo);
1741 		free(remote_refname);
1742 		if (error)
1743 			goto done;
1744 	}
1745 
1746 	/* Set the HEAD reference if the server provided one. */
1747 	TAILQ_FOREACH(pe, &symrefs, entry) {
1748 		struct got_reference *target_ref;
1749 		const char *refname = pe->path;
1750 		const char *target = pe->data;
1751 		char *remote_refname = NULL, *remote_target = NULL;
1752 
1753 		if (strcmp(refname, GOT_REF_HEAD) != 0)
1754 			continue;
1755 
1756 		error = got_ref_open(&target_ref, repo, target, 0);
1757 		if (error) {
1758 			if (error->code == GOT_ERR_NOT_REF) {
1759 				error = NULL;
1760 				continue;
1761 			}
1762 			goto done;
1763 		}
1764 
1765 		error = create_symref(refname, target_ref, verbosity, repo);
1766 		got_ref_close(target_ref);
1767 		if (error)
1768 			goto done;
1769 
1770 		if (mirror_references)
1771 			continue;
1772 
1773 		if (strncmp("refs/heads/", target, 11) != 0)
1774 			continue;
1775 
1776 		if (asprintf(&remote_refname,
1777 		    "refs/remotes/%s/%s", GOT_FETCH_DEFAULT_REMOTE_NAME,
1778 		    refname) == -1) {
1779 			error = got_error_from_errno("asprintf");
1780 			goto done;
1781 		}
1782 		if (asprintf(&remote_target,
1783 		    "refs/remotes/%s/%s", GOT_FETCH_DEFAULT_REMOTE_NAME,
1784 		    target + 11) == -1) {
1785 			error = got_error_from_errno("asprintf");
1786 			free(remote_refname);
1787 			goto done;
1788 		}
1789 		error = got_ref_open(&target_ref, repo, remote_target, 0);
1790 		if (error) {
1791 			free(remote_refname);
1792 			free(remote_target);
1793 			if (error->code == GOT_ERR_NOT_REF) {
1794 				error = NULL;
1795 				continue;
1796 			}
1797 			goto done;
1798 		}
1799 		error = create_symref(remote_refname, target_ref,
1800 		    verbosity - 1, repo);
1801 		free(remote_refname);
1802 		free(remote_target);
1803 		got_ref_close(target_ref);
1804 		if (error)
1805 			goto done;
1806 	}
1807 	if (pe == NULL) {
1808 		/*
1809 		 * We failed to set the HEAD reference. If we asked for
1810 		 * a set of wanted branches use the first of one of those
1811 		 * which could be fetched instead.
1812 		 */
1813 		TAILQ_FOREACH(pe, &wanted_branches, entry) {
1814 			const char *target = pe->path;
1815 			struct got_reference *target_ref;
1816 
1817 			error = got_ref_open(&target_ref, repo, target, 0);
1818 			if (error) {
1819 				if (error->code == GOT_ERR_NOT_REF) {
1820 					error = NULL;
1821 					continue;
1822 				}
1823 				goto done;
1824 			}
1825 
1826 			error = create_symref(GOT_REF_HEAD, target_ref,
1827 			    verbosity, repo);
1828 			got_ref_close(target_ref);
1829 			if (error)
1830 				goto done;
1831 			break;
1832 		}
1833 	}
1834 
1835 	if (verbosity >= 0)
1836 		printf("Created %s repository '%s'\n",
1837 		    mirror_references ? "mirrored" : "cloned", repo_path);
1838 done:
1839 	if (pack_fds) {
1840 		const struct got_error *pack_err =
1841 		    got_repo_pack_fds_close(pack_fds);
1842 		if (error == NULL)
1843 			error = pack_err;
1844 	}
1845 	if (fetchpid > 0) {
1846 		if (kill(fetchpid, SIGTERM) == -1)
1847 			error = got_error_from_errno("kill");
1848 		if (waitpid(fetchpid, &fetchstatus, 0) == -1 && error == NULL)
1849 			error = got_error_from_errno("waitpid");
1850 	}
1851 	if (fetchfd != -1 && close(fetchfd) == -1 && error == NULL)
1852 		error = got_error_from_errno("close");
1853 	if (repo) {
1854 		const struct got_error *close_err = got_repo_close(repo);
1855 		if (error == NULL)
1856 			error = close_err;
1857 	}
1858 	TAILQ_FOREACH(pe, &refs, entry) {
1859 		free((void *)pe->path);
1860 		free(pe->data);
1861 	}
1862 	got_pathlist_free(&refs);
1863 	TAILQ_FOREACH(pe, &symrefs, entry) {
1864 		free((void *)pe->path);
1865 		free(pe->data);
1866 	}
1867 	got_pathlist_free(&symrefs);
1868 	got_pathlist_free(&wanted_branches);
1869 	got_pathlist_free(&wanted_refs);
1870 	free(pack_hash);
1871 	free(proto);
1872 	free(host);
1873 	free(port);
1874 	free(server_path);
1875 	free(repo_name);
1876 	free(default_destdir);
1877 	free(git_url);
1878 	return error;
1879 }
1880 
1881 static const struct got_error *
1882 update_ref(struct got_reference *ref, struct got_object_id *new_id,
1883     int replace_tags, int verbosity, struct got_repository *repo)
1884 {
1885 	const struct got_error *err = NULL;
1886 	char *new_id_str = NULL;
1887 	struct got_object_id *old_id = NULL;
1888 
1889 	err = got_object_id_str(&new_id_str, new_id);
1890 	if (err)
1891 		goto done;
1892 
1893 	if (!replace_tags &&
1894 	    strncmp(got_ref_get_name(ref), "refs/tags/", 10) == 0) {
1895 		err = got_ref_resolve(&old_id, repo, ref);
1896 		if (err)
1897 			goto done;
1898 		if (got_object_id_cmp(old_id, new_id) == 0)
1899 			goto done;
1900 		if (verbosity >= 0) {
1901 			printf("Rejecting update of existing tag %s: %s\n",
1902 			    got_ref_get_name(ref), new_id_str);
1903 		}
1904 		goto done;
1905 	}
1906 
1907 	if (got_ref_is_symbolic(ref)) {
1908 		if (verbosity >= 0) {
1909 			printf("Replacing reference %s: %s\n",
1910 			    got_ref_get_name(ref),
1911 			    got_ref_get_symref_target(ref));
1912 		}
1913 		err = got_ref_change_symref_to_ref(ref, new_id);
1914 		if (err)
1915 			goto done;
1916 		err = got_ref_write(ref, repo);
1917 		if (err)
1918 			goto done;
1919 	} else {
1920 		err = got_ref_resolve(&old_id, repo, ref);
1921 		if (err)
1922 			goto done;
1923 		if (got_object_id_cmp(old_id, new_id) == 0)
1924 			goto done;
1925 
1926 		err = got_ref_change_ref(ref, new_id);
1927 		if (err)
1928 			goto done;
1929 		err = got_ref_write(ref, repo);
1930 		if (err)
1931 			goto done;
1932 	}
1933 
1934 	if (verbosity >= 0)
1935 		printf("Updated %s: %s\n", got_ref_get_name(ref),
1936 		    new_id_str);
1937 done:
1938 	free(old_id);
1939 	free(new_id_str);
1940 	return err;
1941 }
1942 
1943 static const struct got_error *
1944 update_symref(const char *refname, struct got_reference *target_ref,
1945     int verbosity, struct got_repository *repo)
1946 {
1947 	const struct got_error *err = NULL, *unlock_err;
1948 	struct got_reference *symref;
1949 	int symref_is_locked = 0;
1950 
1951 	err = got_ref_open(&symref, repo, refname, 1);
1952 	if (err) {
1953 		if (err->code != GOT_ERR_NOT_REF)
1954 			return err;
1955 		err = got_ref_alloc_symref(&symref, refname, target_ref);
1956 		if (err)
1957 			goto done;
1958 
1959 		err = got_ref_write(symref, repo);
1960 		if (err)
1961 			goto done;
1962 
1963 		if (verbosity >= 0)
1964 			printf("Created reference %s: %s\n",
1965 			    got_ref_get_name(symref),
1966 			    got_ref_get_symref_target(symref));
1967 	} else {
1968 		symref_is_locked = 1;
1969 
1970 		if (strcmp(got_ref_get_symref_target(symref),
1971 		    got_ref_get_name(target_ref)) == 0)
1972 			goto done;
1973 
1974 		err = got_ref_change_symref(symref,
1975 		    got_ref_get_name(target_ref));
1976 		if (err)
1977 			goto done;
1978 
1979 		err = got_ref_write(symref, repo);
1980 		if (err)
1981 			goto done;
1982 
1983 		if (verbosity >= 0)
1984 			printf("Updated %s: %s\n", got_ref_get_name(symref),
1985 			    got_ref_get_symref_target(symref));
1986 
1987 	}
1988 done:
1989 	if (symref_is_locked) {
1990 		unlock_err = got_ref_unlock(symref);
1991 		if (unlock_err && err == NULL)
1992 			err = unlock_err;
1993 	}
1994 	got_ref_close(symref);
1995 	return err;
1996 }
1997 
1998 __dead static void
1999 usage_fetch(void)
2000 {
2001 	fprintf(stderr, "usage: %s fetch [-a] [-b branch] [-d] [-l] "
2002 	    "[-r repository-path] [-t] [-q] [-v] [-R reference] [-X] "
2003 	    "[remote-repository-name]\n",
2004 	    getprogname());
2005 	exit(1);
2006 }
2007 
2008 static const struct got_error *
2009 delete_missing_ref(struct got_reference *ref,
2010     int verbosity, struct got_repository *repo)
2011 {
2012 	const struct got_error *err = NULL;
2013 	struct got_object_id *id = NULL;
2014 	char *id_str = NULL;
2015 
2016 	if (got_ref_is_symbolic(ref)) {
2017 		err = got_ref_delete(ref, repo);
2018 		if (err)
2019 			return err;
2020 		if (verbosity >= 0) {
2021 			printf("Deleted %s: %s\n",
2022 			    got_ref_get_name(ref),
2023 			    got_ref_get_symref_target(ref));
2024 		}
2025 	} else {
2026 		err = got_ref_resolve(&id, repo, ref);
2027 		if (err)
2028 			return err;
2029 		err = got_object_id_str(&id_str, id);
2030 		if (err)
2031 			goto done;
2032 
2033 		err = got_ref_delete(ref, repo);
2034 		if (err)
2035 			goto done;
2036 		if (verbosity >= 0) {
2037 			printf("Deleted %s: %s\n",
2038 			    got_ref_get_name(ref), id_str);
2039 		}
2040 	}
2041 done:
2042 	free(id);
2043 	free(id_str);
2044 	return NULL;
2045 }
2046 
2047 static const struct got_error *
2048 delete_missing_refs(struct got_pathlist_head *their_refs,
2049     struct got_pathlist_head *their_symrefs,
2050     const struct got_remote_repo *remote,
2051     int verbosity, struct got_repository *repo)
2052 {
2053 	const struct got_error *err = NULL, *unlock_err;
2054 	struct got_reflist_head my_refs;
2055 	struct got_reflist_entry *re;
2056 	struct got_pathlist_entry *pe;
2057 	char *remote_namespace = NULL;
2058 	char *local_refname = NULL;
2059 
2060 	TAILQ_INIT(&my_refs);
2061 
2062 	if (asprintf(&remote_namespace, "refs/remotes/%s/", remote->name)
2063 	    == -1)
2064 		return got_error_from_errno("asprintf");
2065 
2066 	err = got_ref_list(&my_refs, repo, NULL, got_ref_cmp_by_name, NULL);
2067 	if (err)
2068 		goto done;
2069 
2070 	TAILQ_FOREACH(re, &my_refs, entry) {
2071 		const char *refname = got_ref_get_name(re->ref);
2072 		const char *their_refname;
2073 
2074 		if (remote->mirror_references) {
2075 			their_refname = refname;
2076 		} else {
2077 			if (strncmp(refname, remote_namespace,
2078 			    strlen(remote_namespace)) == 0) {
2079 				if (strcmp(refname + strlen(remote_namespace),
2080 				    GOT_REF_HEAD) == 0)
2081 					continue;
2082 				if (asprintf(&local_refname, "refs/heads/%s",
2083 				    refname + strlen(remote_namespace)) == -1) {
2084 					err = got_error_from_errno("asprintf");
2085 					goto done;
2086 				}
2087 			} else if (strncmp(refname, "refs/tags/", 10) != 0)
2088 				continue;
2089 
2090 			their_refname = local_refname;
2091 		}
2092 	
2093 		TAILQ_FOREACH(pe, their_refs, entry) {
2094 			if (strcmp(their_refname, pe->path) == 0)
2095 				break;
2096 		}
2097 		if (pe != NULL)
2098 			continue;
2099 
2100 		TAILQ_FOREACH(pe, their_symrefs, entry) {
2101 			if (strcmp(their_refname, pe->path) == 0)
2102 				break;
2103 		}
2104 		if (pe != NULL)
2105 			continue;
2106 
2107 		err = delete_missing_ref(re->ref, verbosity, repo);
2108 		if (err)
2109 			break;
2110 
2111 		if (local_refname) {
2112 			struct got_reference *ref;
2113 			err = got_ref_open(&ref, repo, local_refname, 1);
2114 			if (err) {
2115 				if (err->code != GOT_ERR_NOT_REF)
2116 					break;
2117 				free(local_refname);
2118 				local_refname = NULL;
2119 				continue;
2120 			}
2121 			err = delete_missing_ref(ref, verbosity, repo);
2122 			if (err)
2123 				break;
2124 			unlock_err = got_ref_unlock(ref);
2125 			got_ref_close(ref);
2126 			if (unlock_err && err == NULL) {
2127 				err = unlock_err;
2128 				break;
2129 			}
2130 
2131 			free(local_refname);
2132 			local_refname = NULL;
2133 		}
2134 	}
2135 done:
2136 	free(remote_namespace);
2137 	free(local_refname);
2138 	return err;
2139 }
2140 
2141 static const struct got_error *
2142 update_wanted_ref(const char *refname, struct got_object_id *id,
2143     const char *remote_repo_name, int verbosity, struct got_repository *repo)
2144 {
2145 	const struct got_error *err, *unlock_err;
2146 	char *remote_refname;
2147 	struct got_reference *ref;
2148 
2149 	if (strncmp("refs/", refname, 5) == 0)
2150 		refname += 5;
2151 
2152 	if (asprintf(&remote_refname, "refs/remotes/%s/%s",
2153 	    remote_repo_name, refname) == -1)
2154 		return got_error_from_errno("asprintf");
2155 
2156 	err = got_ref_open(&ref, repo, remote_refname, 1);
2157 	if (err) {
2158 		if (err->code != GOT_ERR_NOT_REF)
2159 			goto done;
2160 		err = create_ref(remote_refname, id, verbosity, repo);
2161 	} else {
2162 		err = update_ref(ref, id, 0, verbosity, repo);
2163 		unlock_err = got_ref_unlock(ref);
2164 		if (unlock_err && err == NULL)
2165 			err = unlock_err;
2166 		got_ref_close(ref);
2167 	}
2168 done:
2169 	free(remote_refname);
2170 	return err;
2171 }
2172 
2173 static const struct got_error *
2174 delete_ref(struct got_repository *repo, struct got_reference *ref)
2175 {
2176 	const struct got_error *err = NULL;
2177 	struct got_object_id *id = NULL;
2178 	char *id_str = NULL;
2179 	const char *target;
2180 
2181 	if (got_ref_is_symbolic(ref)) {
2182 		target = got_ref_get_symref_target(ref);
2183 	} else {
2184 		err = got_ref_resolve(&id, repo, ref);
2185 		if (err)
2186 			goto done;
2187 		err = got_object_id_str(&id_str, id);
2188 		if (err)
2189 			goto done;
2190 		target = id_str;
2191 	}
2192 
2193 	err = got_ref_delete(ref, repo);
2194 	if (err)
2195 		goto done;
2196 
2197 	printf("Deleted %s: %s\n", got_ref_get_name(ref), target);
2198 done:
2199 	free(id);
2200 	free(id_str);
2201 	return err;
2202 }
2203 
2204 static const struct got_error *
2205 delete_refs_for_remote(struct got_repository *repo, const char *remote_name)
2206 {
2207 	const struct got_error *err = NULL;
2208 	struct got_reflist_head refs;
2209 	struct got_reflist_entry *re;
2210 	char *prefix;
2211 
2212 	TAILQ_INIT(&refs);
2213 
2214 	if (asprintf(&prefix, "refs/remotes/%s", remote_name) == -1) {
2215 		err = got_error_from_errno("asprintf");
2216 		goto done;
2217 	}
2218 	err = got_ref_list(&refs, repo, prefix, got_ref_cmp_by_name, NULL);
2219 	if (err)
2220 		goto done;
2221 
2222 	TAILQ_FOREACH(re, &refs, entry)
2223 		delete_ref(repo, re->ref);
2224 done:
2225 	got_ref_list_free(&refs);
2226 	return err;
2227 }
2228 
2229 static const struct got_error *
2230 cmd_fetch(int argc, char *argv[])
2231 {
2232 	const struct got_error *error = NULL, *unlock_err;
2233 	char *cwd = NULL, *repo_path = NULL;
2234 	const char *remote_name;
2235 	char *proto = NULL, *host = NULL, *port = NULL;
2236 	char *repo_name = NULL, *server_path = NULL;
2237 	const struct got_remote_repo *remotes, *remote = NULL;
2238 	int nremotes;
2239 	char *id_str = NULL;
2240 	struct got_repository *repo = NULL;
2241 	struct got_worktree *worktree = NULL;
2242 	const struct got_gotconfig *repo_conf = NULL, *worktree_conf = NULL;
2243 	struct got_pathlist_head refs, symrefs, wanted_branches, wanted_refs;
2244 	struct got_pathlist_entry *pe;
2245 	struct got_object_id *pack_hash = NULL;
2246 	int i, ch, fetchfd = -1, fetchstatus;
2247 	pid_t fetchpid = -1;
2248 	struct got_fetch_progress_arg fpa;
2249 	int verbosity = 0, fetch_all_branches = 0, list_refs_only = 0;
2250 	int delete_refs = 0, replace_tags = 0, delete_remote = 0;
2251 	int *pack_fds = NULL;
2252 
2253 	TAILQ_INIT(&refs);
2254 	TAILQ_INIT(&symrefs);
2255 	TAILQ_INIT(&wanted_branches);
2256 	TAILQ_INIT(&wanted_refs);
2257 
2258 	while ((ch = getopt(argc, argv, "ab:dlr:tvqR:X")) != -1) {
2259 		switch (ch) {
2260 		case 'a':
2261 			fetch_all_branches = 1;
2262 			break;
2263 		case 'b':
2264 			error = got_pathlist_append(&wanted_branches,
2265 			    optarg, NULL);
2266 			if (error)
2267 				return error;
2268 			break;
2269 		case 'd':
2270 			delete_refs = 1;
2271 			break;
2272 		case 'l':
2273 			list_refs_only = 1;
2274 			break;
2275 		case 'r':
2276 			repo_path = realpath(optarg, NULL);
2277 			if (repo_path == NULL)
2278 				return got_error_from_errno2("realpath",
2279 				    optarg);
2280 			got_path_strip_trailing_slashes(repo_path);
2281 			break;
2282 		case 't':
2283 			replace_tags = 1;
2284 			break;
2285 		case 'v':
2286 			if (verbosity < 0)
2287 				verbosity = 0;
2288 			else if (verbosity < 3)
2289 				verbosity++;
2290 			break;
2291 		case 'q':
2292 			verbosity = -1;
2293 			break;
2294 		case 'R':
2295 			error = got_pathlist_append(&wanted_refs,
2296 			    optarg, NULL);
2297 			if (error)
2298 				return error;
2299 			break;
2300 		case 'X':
2301 			delete_remote = 1;
2302 			break;
2303 		default:
2304 			usage_fetch();
2305 			break;
2306 		}
2307 	}
2308 	argc -= optind;
2309 	argv += optind;
2310 
2311 	if (fetch_all_branches && !TAILQ_EMPTY(&wanted_branches))
2312 		option_conflict('a', 'b');
2313 	if (list_refs_only) {
2314 		if (!TAILQ_EMPTY(&wanted_branches))
2315 			option_conflict('l', 'b');
2316 		if (fetch_all_branches)
2317 			option_conflict('l', 'a');
2318 		if (delete_refs)
2319 			option_conflict('l', 'd');
2320 		if (delete_remote)
2321 			option_conflict('l', 'X');
2322 	}
2323 	if (delete_remote) {
2324 		if (fetch_all_branches)
2325 			option_conflict('X', 'a');
2326 		if (!TAILQ_EMPTY(&wanted_branches))
2327 			option_conflict('X', 'b');
2328 		if (delete_refs)
2329 			option_conflict('X', 'd');
2330 		if (replace_tags)
2331 			option_conflict('X', 't');
2332 		if (!TAILQ_EMPTY(&wanted_refs))
2333 			option_conflict('X', 'R');
2334 	}
2335 
2336 	if (argc == 0) {
2337 		if (delete_remote)
2338 			errx(1, "-X option requires a remote name");
2339 		remote_name = GOT_FETCH_DEFAULT_REMOTE_NAME;
2340 	} else if (argc == 1)
2341 		remote_name = argv[0];
2342 	else
2343 		usage_fetch();
2344 
2345 	cwd = getcwd(NULL, 0);
2346 	if (cwd == NULL) {
2347 		error = got_error_from_errno("getcwd");
2348 		goto done;
2349 	}
2350 
2351 	error = got_repo_pack_fds_open(&pack_fds);
2352 	if (error != NULL)
2353 		goto done;
2354 
2355 	if (repo_path == NULL) {
2356 		error = got_worktree_open(&worktree, cwd);
2357 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
2358 			goto done;
2359 		else
2360 			error = NULL;
2361 		if (worktree) {
2362 			repo_path =
2363 			    strdup(got_worktree_get_repo_path(worktree));
2364 			if (repo_path == NULL)
2365 				error = got_error_from_errno("strdup");
2366 			if (error)
2367 				goto done;
2368 		} else {
2369 			repo_path = strdup(cwd);
2370 			if (repo_path == NULL) {
2371 				error = got_error_from_errno("strdup");
2372 				goto done;
2373 			}
2374 		}
2375 	}
2376 
2377 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
2378 	if (error)
2379 		goto done;
2380 
2381 	if (delete_remote) {
2382 		error = delete_refs_for_remote(repo, remote_name);
2383 		goto done; /* nothing else to do */
2384 	}
2385 
2386 	if (worktree) {
2387 		worktree_conf = got_worktree_get_gotconfig(worktree);
2388 		if (worktree_conf) {
2389 			got_gotconfig_get_remotes(&nremotes, &remotes,
2390 			    worktree_conf);
2391 			for (i = 0; i < nremotes; i++) {
2392 				if (strcmp(remotes[i].name, remote_name) == 0) {
2393 					remote = &remotes[i];
2394 					break;
2395 				}
2396 			}
2397 		}
2398 	}
2399 	if (remote == NULL) {
2400 		repo_conf = got_repo_get_gotconfig(repo);
2401 		if (repo_conf) {
2402 			got_gotconfig_get_remotes(&nremotes, &remotes,
2403 			    repo_conf);
2404 			for (i = 0; i < nremotes; i++) {
2405 				if (strcmp(remotes[i].name, remote_name) == 0) {
2406 					remote = &remotes[i];
2407 					break;
2408 				}
2409 			}
2410 		}
2411 	}
2412 	if (remote == NULL) {
2413 		got_repo_get_gitconfig_remotes(&nremotes, &remotes, repo);
2414 		for (i = 0; i < nremotes; i++) {
2415 			if (strcmp(remotes[i].name, remote_name) == 0) {
2416 				remote = &remotes[i];
2417 				break;
2418 			}
2419 		}
2420 	}
2421 	if (remote == NULL) {
2422 		error = got_error_path(remote_name, GOT_ERR_NO_REMOTE);
2423 		goto done;
2424 	}
2425 
2426 	if (TAILQ_EMPTY(&wanted_branches)) {
2427 		if (!fetch_all_branches)
2428 			fetch_all_branches = remote->fetch_all_branches;
2429 		for (i = 0; i < remote->nfetch_branches; i++) {
2430 			got_pathlist_append(&wanted_branches,
2431 			    remote->fetch_branches[i], NULL);
2432 		}
2433 	}
2434 	if (TAILQ_EMPTY(&wanted_refs)) {
2435 		for (i = 0; i < remote->nfetch_refs; i++) {
2436 			got_pathlist_append(&wanted_refs,
2437 			    remote->fetch_refs[i], NULL);
2438 		}
2439 	}
2440 
2441 	error = got_dial_parse_uri(&proto, &host, &port, &server_path,
2442 	    &repo_name, remote->fetch_url);
2443 	if (error)
2444 		goto done;
2445 
2446 	if (strcmp(proto, "git") == 0) {
2447 #ifndef PROFILE
2448 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
2449 		    "sendfd dns inet unveil", NULL) == -1)
2450 			err(1, "pledge");
2451 #endif
2452 	} else if (strcmp(proto, "git+ssh") == 0 ||
2453 	    strcmp(proto, "ssh") == 0) {
2454 #ifndef PROFILE
2455 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
2456 		    "sendfd unveil", NULL) == -1)
2457 			err(1, "pledge");
2458 #endif
2459 	} else if (strcmp(proto, "http") == 0 ||
2460 	    strcmp(proto, "git+http") == 0) {
2461 		error = got_error_path(proto, GOT_ERR_NOT_IMPL);
2462 		goto done;
2463 	} else {
2464 		error = got_error_path(proto, GOT_ERR_BAD_PROTO);
2465 		goto done;
2466 	}
2467 
2468 	error = got_dial_apply_unveil(proto);
2469 	if (error)
2470 		goto done;
2471 
2472 	error = apply_unveil(got_repo_get_path(repo), 0, NULL);
2473 	if (error)
2474 		goto done;
2475 
2476 	if (verbosity >= 0)
2477 		printf("Connecting to \"%s\" %s%s%s\n", remote->name, host,
2478 		    port ? ":" : "", port ? port : "");
2479 
2480 	error = got_fetch_connect(&fetchpid, &fetchfd, proto, host, port,
2481 	    server_path, verbosity);
2482 	if (error)
2483 		goto done;
2484 
2485 	fpa.last_scaled_size[0] = '\0';
2486 	fpa.last_p_indexed = -1;
2487 	fpa.last_p_resolved = -1;
2488 	fpa.verbosity = verbosity;
2489 	fpa.repo = repo;
2490 	fpa.create_configs = 0;
2491 	fpa.configs_created = 0;
2492 	memset(&fpa.config_info, 0, sizeof(fpa.config_info));
2493 	error = got_fetch_pack(&pack_hash, &refs, &symrefs, remote->name,
2494 	    remote->mirror_references, fetch_all_branches, &wanted_branches,
2495 	    &wanted_refs, list_refs_only, verbosity, fetchfd, repo,
2496 	    fetch_progress, &fpa);
2497 	if (error)
2498 		goto done;
2499 
2500 	if (list_refs_only) {
2501 		error = list_remote_refs(&symrefs, &refs);
2502 		goto done;
2503 	}
2504 
2505 	if (pack_hash == NULL) {
2506 		if (verbosity >= 0)
2507 			printf("Already up-to-date\n");
2508 	} else if (verbosity >= 0) {
2509 		error = got_object_id_str(&id_str, pack_hash);
2510 		if (error)
2511 			goto done;
2512 		printf("\nFetched %s.pack\n", id_str);
2513 		free(id_str);
2514 		id_str = NULL;
2515 	}
2516 
2517 	/* Update references provided with the pack file. */
2518 	TAILQ_FOREACH(pe, &refs, entry) {
2519 		const char *refname = pe->path;
2520 		struct got_object_id *id = pe->data;
2521 		struct got_reference *ref;
2522 		char *remote_refname;
2523 
2524 		if (is_wanted_ref(&wanted_refs, refname) &&
2525 		    !remote->mirror_references) {
2526 			error = update_wanted_ref(refname, id,
2527 			    remote->name, verbosity, repo);
2528 			if (error)
2529 				goto done;
2530 			continue;
2531 		}
2532 
2533 		if (remote->mirror_references ||
2534 		    strncmp("refs/tags/", refname, 10) == 0) {
2535 			error = got_ref_open(&ref, repo, refname, 1);
2536 			if (error) {
2537 				if (error->code != GOT_ERR_NOT_REF)
2538 					goto done;
2539 				error = create_ref(refname, id, verbosity,
2540 				    repo);
2541 				if (error)
2542 					goto done;
2543 			} else {
2544 				error = update_ref(ref, id, replace_tags,
2545 				    verbosity, repo);
2546 				unlock_err = got_ref_unlock(ref);
2547 				if (unlock_err && error == NULL)
2548 					error = unlock_err;
2549 				got_ref_close(ref);
2550 				if (error)
2551 					goto done;
2552 			}
2553 		} else if (strncmp("refs/heads/", refname, 11) == 0) {
2554 			if (asprintf(&remote_refname, "refs/remotes/%s/%s",
2555 			    remote_name, refname + 11) == -1) {
2556 				error = got_error_from_errno("asprintf");
2557 				goto done;
2558 			}
2559 
2560 			error = got_ref_open(&ref, repo, remote_refname, 1);
2561 			if (error) {
2562 				if (error->code != GOT_ERR_NOT_REF)
2563 					goto done;
2564 				error = create_ref(remote_refname, id, 
2565 				    verbosity, repo);
2566 				if (error)
2567 					goto done;
2568 			} else {
2569 				error = update_ref(ref, id, replace_tags,
2570 				    verbosity, repo);
2571 				unlock_err = got_ref_unlock(ref);
2572 				if (unlock_err && error == NULL)
2573 					error = unlock_err;
2574 				got_ref_close(ref);
2575 				if (error)
2576 					goto done;
2577 			}
2578 
2579 			/* Also create a local branch if none exists yet. */
2580 			error = got_ref_open(&ref, repo, refname, 1);
2581 			if (error) {
2582 				if (error->code != GOT_ERR_NOT_REF)
2583 					goto done;
2584 				error = create_ref(refname, id, verbosity,
2585 				    repo);
2586 				if (error)
2587 					goto done;
2588 			} else {
2589 				unlock_err = got_ref_unlock(ref);
2590 				if (unlock_err && error == NULL)
2591 					error = unlock_err;
2592 				got_ref_close(ref);
2593 			}
2594 		}
2595 	}
2596 	if (delete_refs) {
2597 		error = delete_missing_refs(&refs, &symrefs, remote,
2598 		    verbosity, repo);
2599 		if (error)
2600 			goto done;
2601 	}
2602 
2603 	if (!remote->mirror_references) {
2604 		/* Update remote HEAD reference if the server provided one. */
2605 		TAILQ_FOREACH(pe, &symrefs, entry) {
2606 			struct got_reference *target_ref;
2607 			const char *refname = pe->path;
2608 			const char *target = pe->data;
2609 			char *remote_refname = NULL, *remote_target = NULL;
2610 
2611 			if (strcmp(refname, GOT_REF_HEAD) != 0)
2612 				continue;
2613 
2614 			if (strncmp("refs/heads/", target, 11) != 0)
2615 				continue;
2616 
2617 			if (asprintf(&remote_refname, "refs/remotes/%s/%s",
2618 			    remote->name, refname) == -1) {
2619 				error = got_error_from_errno("asprintf");
2620 				goto done;
2621 			}
2622 			if (asprintf(&remote_target, "refs/remotes/%s/%s",
2623 			    remote->name, target + 11) == -1) {
2624 				error = got_error_from_errno("asprintf");
2625 				free(remote_refname);
2626 				goto done;
2627 			}
2628 
2629 			error = got_ref_open(&target_ref, repo, remote_target,
2630 			    0);
2631 			if (error) {
2632 				free(remote_refname);
2633 				free(remote_target);
2634 				if (error->code == GOT_ERR_NOT_REF) {
2635 					error = NULL;
2636 					continue;
2637 				}
2638 				goto done;
2639 			}
2640 			error = update_symref(remote_refname, target_ref,
2641 			    verbosity, repo);
2642 			free(remote_refname);
2643 			free(remote_target);
2644 			got_ref_close(target_ref);
2645 			if (error)
2646 				goto done;
2647 		}
2648 	}
2649 done:
2650 	if (fetchpid > 0) {
2651 		if (kill(fetchpid, SIGTERM) == -1)
2652 			error = got_error_from_errno("kill");
2653 		if (waitpid(fetchpid, &fetchstatus, 0) == -1 && error == NULL)
2654 			error = got_error_from_errno("waitpid");
2655 	}
2656 	if (fetchfd != -1 && close(fetchfd) == -1 && error == NULL)
2657 		error = got_error_from_errno("close");
2658 	if (repo) {
2659 		const struct got_error *close_err = got_repo_close(repo);
2660 		if (error == NULL)
2661 			error = close_err;
2662 	}
2663 	if (worktree)
2664 		got_worktree_close(worktree);
2665 	if (pack_fds) {
2666 		const struct got_error *pack_err =
2667 		    got_repo_pack_fds_close(pack_fds);
2668 		if (error == NULL)
2669 			error = pack_err;
2670 	}
2671 	TAILQ_FOREACH(pe, &refs, entry) {
2672 		free((void *)pe->path);
2673 		free(pe->data);
2674 	}
2675 	got_pathlist_free(&refs);
2676 	TAILQ_FOREACH(pe, &symrefs, entry) {
2677 		free((void *)pe->path);
2678 		free(pe->data);
2679 	}
2680 	got_pathlist_free(&symrefs);
2681 	got_pathlist_free(&wanted_branches);
2682 	got_pathlist_free(&wanted_refs);
2683 	free(id_str);
2684 	free(cwd);
2685 	free(repo_path);
2686 	free(pack_hash);
2687 	free(proto);
2688 	free(host);
2689 	free(port);
2690 	free(server_path);
2691 	free(repo_name);
2692 	return error;
2693 }
2694 
2695 
2696 __dead static void
2697 usage_checkout(void)
2698 {
2699 	fprintf(stderr, "usage: %s checkout [-E] [-b branch] [-c commit] "
2700 	    "[-p prefix] [-q] repository-path [worktree-path]\n",
2701 	    getprogname());
2702 	exit(1);
2703 }
2704 
2705 static void
2706 show_worktree_base_ref_warning(void)
2707 {
2708 	fprintf(stderr, "%s: warning: could not create a reference "
2709 	    "to the work tree's base commit; the commit could be "
2710 	    "garbage-collected by Git or 'gotadmin cleanup'; making the "
2711 	    "repository writable and running 'got update' will prevent this\n",
2712 	    getprogname());
2713 }
2714 
2715 struct got_checkout_progress_arg {
2716 	const char *worktree_path;
2717 	int had_base_commit_ref_error;
2718 	int verbosity;
2719 };
2720 
2721 static const struct got_error *
2722 checkout_progress(void *arg, unsigned char status, const char *path)
2723 {
2724 	struct got_checkout_progress_arg *a = arg;
2725 
2726 	/* Base commit bump happens silently. */
2727 	if (status == GOT_STATUS_BUMP_BASE)
2728 		return NULL;
2729 
2730 	if (status == GOT_STATUS_BASE_REF_ERR) {
2731 		a->had_base_commit_ref_error = 1;
2732 		return NULL;
2733 	}
2734 
2735 	while (path[0] == '/')
2736 		path++;
2737 
2738 	if (a->verbosity >= 0)
2739 		printf("%c  %s/%s\n", status, a->worktree_path, path);
2740 
2741 	return NULL;
2742 }
2743 
2744 static const struct got_error *
2745 check_cancelled(void *arg)
2746 {
2747 	if (sigint_received || sigpipe_received)
2748 		return got_error(GOT_ERR_CANCELLED);
2749 	return NULL;
2750 }
2751 
2752 static const struct got_error *
2753 check_linear_ancestry(struct got_object_id *commit_id,
2754     struct got_object_id *base_commit_id, int allow_forwards_in_time_only,
2755     struct got_repository *repo)
2756 {
2757 	const struct got_error *err = NULL;
2758 	struct got_object_id *yca_id;
2759 
2760 	err = got_commit_graph_find_youngest_common_ancestor(&yca_id,
2761 	    commit_id, base_commit_id, 1, repo, check_cancelled, NULL);
2762 	if (err)
2763 		return err;
2764 
2765 	if (yca_id == NULL)
2766 		return got_error(GOT_ERR_ANCESTRY);
2767 
2768 	/*
2769 	 * Require a straight line of history between the target commit
2770 	 * and the work tree's base commit.
2771 	 *
2772 	 * Non-linear situations such as this require a rebase:
2773 	 *
2774 	 * (commit) D       F (base_commit)
2775 	 *           \     /
2776 	 *            C   E
2777 	 *             \ /
2778 	 *              B (yca)
2779 	 *              |
2780 	 *              A
2781 	 *
2782 	 * 'got update' only handles linear cases:
2783 	 * Update forwards in time:  A (base/yca) - B - C - D (commit)
2784 	 * Update backwards in time: D (base) - C - B - A (commit/yca)
2785 	 */
2786 	if (allow_forwards_in_time_only) {
2787 	    if (got_object_id_cmp(base_commit_id, yca_id) != 0)
2788 		return got_error(GOT_ERR_ANCESTRY);
2789 	} else if (got_object_id_cmp(commit_id, yca_id) != 0 &&
2790 	    got_object_id_cmp(base_commit_id, yca_id) != 0)
2791 		return got_error(GOT_ERR_ANCESTRY);
2792 
2793 	free(yca_id);
2794 	return NULL;
2795 }
2796 
2797 static const struct got_error *
2798 check_same_branch(struct got_object_id *commit_id,
2799     struct got_reference *head_ref, struct got_object_id *yca_id,
2800     struct got_repository *repo)
2801 {
2802 	const struct got_error *err = NULL;
2803 	struct got_commit_graph *graph = NULL;
2804 	struct got_object_id *head_commit_id = NULL;
2805 	int is_same_branch = 0;
2806 
2807 	err = got_ref_resolve(&head_commit_id, repo, head_ref);
2808 	if (err)
2809 		goto done;
2810 
2811 	if (got_object_id_cmp(head_commit_id, commit_id) == 0) {
2812 		is_same_branch = 1;
2813 		goto done;
2814 	}
2815 	if (yca_id && got_object_id_cmp(commit_id, yca_id) == 0) {
2816 		is_same_branch = 1;
2817 		goto done;
2818 	}
2819 
2820 	err = got_commit_graph_open(&graph, "/", 1);
2821 	if (err)
2822 		goto done;
2823 
2824 	err = got_commit_graph_iter_start(graph, head_commit_id, repo,
2825 	    check_cancelled, NULL);
2826 	if (err)
2827 		goto done;
2828 
2829 	for (;;) {
2830 		struct got_object_id *id;
2831 		err = got_commit_graph_iter_next(&id, graph, repo,
2832 		    check_cancelled, NULL);
2833 		if (err) {
2834 			if (err->code == GOT_ERR_ITER_COMPLETED)
2835 				err = NULL;
2836 			break;
2837 		}
2838 
2839 		if (id) {
2840 			if (yca_id && got_object_id_cmp(id, yca_id) == 0)
2841 				break;
2842 			if (got_object_id_cmp(id, commit_id) == 0) {
2843 				is_same_branch = 1;
2844 				break;
2845 			}
2846 		}
2847 	}
2848 done:
2849 	if (graph)
2850 		got_commit_graph_close(graph);
2851 	free(head_commit_id);
2852 	if (!err && !is_same_branch)
2853 		err = got_error(GOT_ERR_ANCESTRY);
2854 	return err;
2855 }
2856 
2857 static const struct got_error *
2858 checkout_ancestry_error(struct got_reference *ref, const char *commit_id_str)
2859 {
2860 	static char msg[512];
2861 	const char *branch_name;
2862 
2863 	if (got_ref_is_symbolic(ref))
2864 		branch_name = got_ref_get_symref_target(ref);
2865 	else
2866 		branch_name = got_ref_get_name(ref);
2867 
2868 	if (strncmp("refs/heads/", branch_name, 11) == 0)
2869 		branch_name += 11;
2870 
2871 	snprintf(msg, sizeof(msg),
2872 	    "target commit is not contained in branch '%s'; "
2873 	    "the branch to use must be specified with -b; "
2874 	    "if necessary a new branch can be created for "
2875 	    "this commit with 'got branch -c %s BRANCH_NAME'",
2876 	    branch_name, commit_id_str);
2877 
2878 	return got_error_msg(GOT_ERR_ANCESTRY, msg);
2879 }
2880 
2881 static const struct got_error *
2882 cmd_checkout(int argc, char *argv[])
2883 {
2884 	const struct got_error *error = NULL;
2885 	struct got_repository *repo = NULL;
2886 	struct got_reference *head_ref = NULL, *ref = NULL;
2887 	struct got_worktree *worktree = NULL;
2888 	char *repo_path = NULL;
2889 	char *worktree_path = NULL;
2890 	const char *path_prefix = "";
2891 	const char *branch_name = GOT_REF_HEAD, *refname = NULL;
2892 	char *commit_id_str = NULL;
2893 	struct got_object_id *commit_id = NULL;
2894 	char *cwd = NULL;
2895 	int ch, same_path_prefix, allow_nonempty = 0, verbosity = 0;
2896 	struct got_pathlist_head paths;
2897 	struct got_checkout_progress_arg cpa;
2898 	int *pack_fds = NULL;
2899 
2900 	TAILQ_INIT(&paths);
2901 
2902 	while ((ch = getopt(argc, argv, "b:c:Ep:q")) != -1) {
2903 		switch (ch) {
2904 		case 'b':
2905 			branch_name = optarg;
2906 			break;
2907 		case 'c':
2908 			commit_id_str = strdup(optarg);
2909 			if (commit_id_str == NULL)
2910 				return got_error_from_errno("strdup");
2911 			break;
2912 		case 'E':
2913 			allow_nonempty = 1;
2914 			break;
2915 		case 'p':
2916 			path_prefix = optarg;
2917 			break;
2918 		case 'q':
2919 			verbosity = -1;
2920 			break;
2921 		default:
2922 			usage_checkout();
2923 			/* NOTREACHED */
2924 		}
2925 	}
2926 
2927 	argc -= optind;
2928 	argv += optind;
2929 
2930 #ifndef PROFILE
2931 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
2932 	    "unveil", NULL) == -1)
2933 		err(1, "pledge");
2934 #endif
2935 	if (argc == 1) {
2936 		char *base, *dotgit;
2937 		const char *path;
2938 		repo_path = realpath(argv[0], NULL);
2939 		if (repo_path == NULL)
2940 			return got_error_from_errno2("realpath", argv[0]);
2941 		cwd = getcwd(NULL, 0);
2942 		if (cwd == NULL) {
2943 			error = got_error_from_errno("getcwd");
2944 			goto done;
2945 		}
2946 		if (path_prefix[0])
2947 			path = path_prefix;
2948 		else
2949 			path = repo_path;
2950 		error = got_path_basename(&base, path);
2951 		if (error)
2952 			goto done;
2953 		dotgit = strstr(base, ".git");
2954 		if (dotgit)
2955 			*dotgit = '\0';
2956 		if (asprintf(&worktree_path, "%s/%s", cwd, base) == -1) {
2957 			error = got_error_from_errno("asprintf");
2958 			free(base);
2959 			goto done;
2960 		}
2961 		free(base);
2962 	} else if (argc == 2) {
2963 		repo_path = realpath(argv[0], NULL);
2964 		if (repo_path == NULL) {
2965 			error = got_error_from_errno2("realpath", argv[0]);
2966 			goto done;
2967 		}
2968 		worktree_path = realpath(argv[1], NULL);
2969 		if (worktree_path == NULL) {
2970 			if (errno != ENOENT) {
2971 				error = got_error_from_errno2("realpath",
2972 				    argv[1]);
2973 				goto done;
2974 			}
2975 			worktree_path = strdup(argv[1]);
2976 			if (worktree_path == NULL) {
2977 				error = got_error_from_errno("strdup");
2978 				goto done;
2979 			}
2980 		}
2981 	} else
2982 		usage_checkout();
2983 
2984 	got_path_strip_trailing_slashes(repo_path);
2985 	got_path_strip_trailing_slashes(worktree_path);
2986 
2987 	error = got_repo_pack_fds_open(&pack_fds);
2988 	if (error != NULL)
2989 		goto done;
2990 
2991 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
2992 	if (error != NULL)
2993 		goto done;
2994 
2995 	/* Pre-create work tree path for unveil(2) */
2996 	error = got_path_mkdir(worktree_path);
2997 	if (error) {
2998 		if (!(error->code == GOT_ERR_ERRNO && errno == EISDIR) &&
2999 		    !(error->code == GOT_ERR_ERRNO && errno == EEXIST))
3000 			goto done;
3001 		if (!allow_nonempty &&
3002 		    !got_path_dir_is_empty(worktree_path)) {
3003 			error = got_error_path(worktree_path,
3004 			    GOT_ERR_DIR_NOT_EMPTY);
3005 			goto done;
3006 		}
3007 	}
3008 
3009 	error = apply_unveil(got_repo_get_path(repo), 0, worktree_path);
3010 	if (error)
3011 		goto done;
3012 
3013 	error = got_ref_open(&head_ref, repo, branch_name, 0);
3014 	if (error != NULL)
3015 		goto done;
3016 
3017 	error = got_worktree_init(worktree_path, head_ref, path_prefix, repo);
3018 	if (error != NULL && !(error->code == GOT_ERR_ERRNO && errno == EEXIST))
3019 		goto done;
3020 
3021 	error = got_worktree_open(&worktree, worktree_path);
3022 	if (error != NULL)
3023 		goto done;
3024 
3025 	error = got_worktree_match_path_prefix(&same_path_prefix, worktree,
3026 	    path_prefix);
3027 	if (error != NULL)
3028 		goto done;
3029 	if (!same_path_prefix) {
3030 		error = got_error(GOT_ERR_PATH_PREFIX);
3031 		goto done;
3032 	}
3033 
3034 	if (commit_id_str) {
3035 		struct got_reflist_head refs;
3036 		TAILQ_INIT(&refs);
3037 		error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name,
3038 		    NULL);
3039 		if (error)
3040 			goto done;
3041 		error = got_repo_match_object_id(&commit_id, NULL,
3042 		    commit_id_str, GOT_OBJ_TYPE_COMMIT, &refs, repo);
3043 		got_ref_list_free(&refs);
3044 		if (error)
3045 			goto done;
3046 		error = check_linear_ancestry(commit_id,
3047 		    got_worktree_get_base_commit_id(worktree), 0, repo);
3048 		if (error != NULL) {
3049 			if (error->code == GOT_ERR_ANCESTRY) {
3050 				error = checkout_ancestry_error(
3051 				    head_ref, commit_id_str);
3052 			}
3053 			goto done;
3054 		}
3055 		error = check_same_branch(commit_id, head_ref, NULL, repo);
3056 		if (error) {
3057 			if (error->code == GOT_ERR_ANCESTRY) {
3058 				error = checkout_ancestry_error(
3059 				    head_ref, commit_id_str);
3060 			}
3061 			goto done;
3062 		}
3063 		error = got_worktree_set_base_commit_id(worktree, repo,
3064 		    commit_id);
3065 		if (error)
3066 			goto done;
3067 		/* Expand potentially abbreviated commit ID string. */
3068 		free(commit_id_str);
3069 		error = got_object_id_str(&commit_id_str, commit_id);
3070 		if (error)
3071 			goto done;
3072 	} else {
3073 		commit_id = got_object_id_dup(
3074 		    got_worktree_get_base_commit_id(worktree));
3075 		if (commit_id == NULL) {
3076 			error = got_error_from_errno("got_object_id_dup");
3077 			goto done;
3078 		}
3079 		error = got_object_id_str(&commit_id_str, commit_id);
3080 		if (error)
3081 			goto done;
3082 	}
3083 
3084 	error = got_pathlist_append(&paths, "", NULL);
3085 	if (error)
3086 		goto done;
3087 	cpa.worktree_path = worktree_path;
3088 	cpa.had_base_commit_ref_error = 0;
3089 	cpa.verbosity = verbosity;
3090 	error = got_worktree_checkout_files(worktree, &paths, repo,
3091 	    checkout_progress, &cpa, check_cancelled, NULL);
3092 	if (error != NULL)
3093 		goto done;
3094 
3095 	if (got_ref_is_symbolic(head_ref)) {
3096 		error = got_ref_resolve_symbolic(&ref, repo, head_ref);
3097 		if (error)
3098 			goto done;
3099 		refname = got_ref_get_name(ref);
3100 	} else
3101 		refname = got_ref_get_name(head_ref);
3102 	printf("Checked out %s: %s\n", refname, commit_id_str);
3103 	printf("Now shut up and hack\n");
3104 	if (cpa.had_base_commit_ref_error)
3105 		show_worktree_base_ref_warning();
3106 done:
3107 	if (pack_fds) {
3108 		const struct got_error *pack_err =
3109 		    got_repo_pack_fds_close(pack_fds);
3110 		if (error == NULL)
3111 			error = pack_err;
3112 	}
3113 	if (head_ref)
3114 		got_ref_close(head_ref);
3115 	if (ref)
3116 		got_ref_close(ref);
3117 	got_pathlist_free(&paths);
3118 	free(commit_id_str);
3119 	free(commit_id);
3120 	free(repo_path);
3121 	free(worktree_path);
3122 	free(cwd);
3123 	return error;
3124 }
3125 
3126 struct got_update_progress_arg {
3127 	int did_something;
3128 	int conflicts;
3129 	int obstructed;
3130 	int not_updated;
3131 	int missing;
3132 	int not_deleted;
3133 	int unversioned;
3134 	int verbosity;
3135 };
3136 
3137 static void
3138 print_update_progress_stats(struct got_update_progress_arg *upa)
3139 {
3140 	if (!upa->did_something)
3141 		return;
3142 
3143 	if (upa->conflicts > 0)
3144 		printf("Files with new merge conflicts: %d\n", upa->conflicts);
3145 	if (upa->obstructed > 0)
3146 		printf("File paths obstructed by a non-regular file: %d\n",
3147 		    upa->obstructed);
3148 	if (upa->not_updated > 0)
3149 		printf("Files not updated because of existing merge "
3150 		    "conflicts: %d\n", upa->not_updated);
3151 }
3152 
3153 /*
3154  * The meaning of some status codes differs between merge-style operations and
3155  * update operations. For example, the ! status code means "file was missing"
3156  * if changes were merged into the work tree, and "missing file was restored"
3157  * if the work tree was updated. This function should be used by any operation
3158  * which merges changes into the work tree without updating the work tree.
3159  */
3160 static void
3161 print_merge_progress_stats(struct got_update_progress_arg *upa)
3162 {
3163 	if (!upa->did_something)
3164 		return;
3165 
3166 	if (upa->conflicts > 0)
3167 		printf("Files with new merge conflicts: %d\n", upa->conflicts);
3168 	if (upa->obstructed > 0)
3169 		printf("File paths obstructed by a non-regular file: %d\n",
3170 		    upa->obstructed);
3171 	if (upa->missing > 0)
3172 		printf("Files which had incoming changes but could not be "
3173 		    "found in the work tree: %d\n", upa->missing);
3174 	if (upa->not_deleted > 0)
3175 		printf("Files not deleted due to differences in deleted "
3176 		    "content: %d\n", upa->not_deleted);
3177 	if (upa->unversioned > 0)
3178 		printf("Files not merged because an unversioned file was "
3179 		    "found in the work tree: %d\n", upa->unversioned);
3180 }
3181 
3182 __dead static void
3183 usage_update(void)
3184 {
3185 	fprintf(stderr, "usage: %s update [-b branch] [-c commit] [-q] "
3186 	    "[path ...]\n",
3187 	    getprogname());
3188 	exit(1);
3189 }
3190 
3191 static const struct got_error *
3192 update_progress(void *arg, unsigned char status, const char *path)
3193 {
3194 	struct got_update_progress_arg *upa = arg;
3195 
3196 	if (status == GOT_STATUS_EXISTS ||
3197 	    status == GOT_STATUS_BASE_REF_ERR)
3198 		return NULL;
3199 
3200 	upa->did_something = 1;
3201 
3202 	/* Base commit bump happens silently. */
3203 	if (status == GOT_STATUS_BUMP_BASE)
3204 		return NULL;
3205 
3206 	if (status == GOT_STATUS_CONFLICT)
3207 		upa->conflicts++;
3208 	if (status == GOT_STATUS_OBSTRUCTED)
3209 		upa->obstructed++;
3210 	if (status == GOT_STATUS_CANNOT_UPDATE)
3211 		upa->not_updated++;
3212 	if (status == GOT_STATUS_MISSING)
3213 		upa->missing++;
3214 	if (status == GOT_STATUS_CANNOT_DELETE)
3215 		upa->not_deleted++;
3216 	if (status == GOT_STATUS_UNVERSIONED)
3217 		upa->unversioned++;
3218 
3219 	while (path[0] == '/')
3220 		path++;
3221 	if (upa->verbosity >= 0)
3222 		printf("%c  %s\n", status, path);
3223 
3224 	return NULL;
3225 }
3226 
3227 static const struct got_error *
3228 switch_head_ref(struct got_reference *head_ref,
3229     struct got_object_id *commit_id, struct got_worktree *worktree,
3230     struct got_repository *repo)
3231 {
3232 	const struct got_error *err = NULL;
3233 	char *base_id_str;
3234 	int ref_has_moved = 0;
3235 
3236 	/* Trivial case: switching between two different references. */
3237 	if (strcmp(got_ref_get_name(head_ref),
3238 	    got_worktree_get_head_ref_name(worktree)) != 0) {
3239 		printf("Switching work tree from %s to %s\n",
3240 		    got_worktree_get_head_ref_name(worktree),
3241 		    got_ref_get_name(head_ref));
3242 		return got_worktree_set_head_ref(worktree, head_ref);
3243 	}
3244 
3245 	err = check_linear_ancestry(commit_id,
3246 	    got_worktree_get_base_commit_id(worktree), 0, repo);
3247 	if (err) {
3248 		if (err->code != GOT_ERR_ANCESTRY)
3249 			return err;
3250 		ref_has_moved = 1;
3251 	}
3252 	if (!ref_has_moved)
3253 		return NULL;
3254 
3255 	/* Switching to a rebased branch with the same reference name. */
3256 	err = got_object_id_str(&base_id_str,
3257 	    got_worktree_get_base_commit_id(worktree));
3258 	if (err)
3259 		return err;
3260 	printf("Reference %s now points at a different branch\n",
3261 	    got_worktree_get_head_ref_name(worktree));
3262 	printf("Switching work tree from %s to %s\n", base_id_str,
3263 	    got_worktree_get_head_ref_name(worktree));
3264 	return NULL;
3265 }
3266 
3267 static const struct got_error *
3268 check_rebase_or_histedit_in_progress(struct got_worktree *worktree)
3269 {
3270 	const struct got_error *err;
3271 	int in_progress;
3272 
3273 	err = got_worktree_rebase_in_progress(&in_progress, worktree);
3274 	if (err)
3275 		return err;
3276 	if (in_progress)
3277 		return got_error(GOT_ERR_REBASING);
3278 
3279 	err = got_worktree_histedit_in_progress(&in_progress, worktree);
3280 	if (err)
3281 		return err;
3282 	if (in_progress)
3283 		return got_error(GOT_ERR_HISTEDIT_BUSY);
3284 
3285 	return NULL;
3286 }
3287 
3288 static const struct got_error *
3289 check_merge_in_progress(struct got_worktree *worktree,
3290     struct got_repository *repo)
3291 {
3292 	const struct got_error *err;
3293 	int in_progress;
3294 
3295 	err = got_worktree_merge_in_progress(&in_progress, worktree, repo);
3296 	if (err)
3297 		return err;
3298 	if (in_progress)
3299 		return got_error(GOT_ERR_MERGE_BUSY);
3300 
3301 	return NULL;
3302 }
3303 
3304 static const struct got_error *
3305 get_worktree_paths_from_argv(struct got_pathlist_head *paths, int argc,
3306     char *argv[], struct got_worktree *worktree)
3307 {
3308 	const struct got_error *err = NULL;
3309 	char *path;
3310 	struct got_pathlist_entry *new;
3311 	int i;
3312 
3313 	if (argc == 0) {
3314 		path = strdup("");
3315 		if (path == NULL)
3316 			return got_error_from_errno("strdup");
3317 		return got_pathlist_append(paths, path, NULL);
3318 	}
3319 
3320 	for (i = 0; i < argc; i++) {
3321 		err = got_worktree_resolve_path(&path, worktree, argv[i]);
3322 		if (err)
3323 			break;
3324 		err = got_pathlist_insert(&new, paths, path, NULL);
3325 		if (err || new == NULL /* duplicate */) {
3326 			free(path);
3327 			if (err)
3328 				break;
3329 		}
3330 	}
3331 
3332 	return err;
3333 }
3334 
3335 static const struct got_error *
3336 wrap_not_worktree_error(const struct got_error *orig_err,
3337     const char *cmdname, const char *path)
3338 {
3339 	const struct got_error *err;
3340 	struct got_repository *repo;
3341 	static char msg[512];
3342 	int *pack_fds = NULL;
3343 
3344 	err = got_repo_pack_fds_open(&pack_fds);
3345 	if (err)
3346 		return err;
3347 
3348 	err = got_repo_open(&repo, path, NULL, pack_fds);
3349 	if (err)
3350 		return orig_err;
3351 
3352 	snprintf(msg, sizeof(msg),
3353 	    "'got %s' needs a work tree in addition to a git repository\n"
3354 	    "Work trees can be checked out from this Git repository with "
3355 	    "'got checkout'.\n"
3356 	    "The got(1) manual page contains more information.", cmdname);
3357 	err = got_error_msg(GOT_ERR_NOT_WORKTREE, msg);
3358 	got_repo_close(repo);
3359 	if (pack_fds) {
3360 		const struct got_error *pack_err =
3361 		    got_repo_pack_fds_close(pack_fds);
3362 		if (err == NULL)
3363 			err = pack_err;
3364 	}
3365 	return err;
3366 }
3367 
3368 static const struct got_error *
3369 cmd_update(int argc, char *argv[])
3370 {
3371 	const struct got_error *error = NULL;
3372 	struct got_repository *repo = NULL;
3373 	struct got_worktree *worktree = NULL;
3374 	char *worktree_path = NULL;
3375 	struct got_object_id *commit_id = NULL;
3376 	char *commit_id_str = NULL;
3377 	const char *branch_name = NULL;
3378 	struct got_reference *head_ref = NULL;
3379 	struct got_pathlist_head paths;
3380 	struct got_pathlist_entry *pe;
3381 	int ch, verbosity = 0;
3382 	struct got_update_progress_arg upa;
3383 	int *pack_fds = NULL;
3384 
3385 	TAILQ_INIT(&paths);
3386 
3387 	while ((ch = getopt(argc, argv, "b:c:q")) != -1) {
3388 		switch (ch) {
3389 		case 'b':
3390 			branch_name = optarg;
3391 			break;
3392 		case 'c':
3393 			commit_id_str = strdup(optarg);
3394 			if (commit_id_str == NULL)
3395 				return got_error_from_errno("strdup");
3396 			break;
3397 		case 'q':
3398 			verbosity = -1;
3399 			break;
3400 		default:
3401 			usage_update();
3402 			/* NOTREACHED */
3403 		}
3404 	}
3405 
3406 	argc -= optind;
3407 	argv += optind;
3408 
3409 #ifndef PROFILE
3410 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
3411 	    "unveil", NULL) == -1)
3412 		err(1, "pledge");
3413 #endif
3414 	worktree_path = getcwd(NULL, 0);
3415 	if (worktree_path == NULL) {
3416 		error = got_error_from_errno("getcwd");
3417 		goto done;
3418 	}
3419 
3420 	error = got_repo_pack_fds_open(&pack_fds);
3421 	if (error != NULL)
3422 		goto done;
3423 
3424 	error = got_worktree_open(&worktree, worktree_path);
3425 	if (error) {
3426 		if (error->code == GOT_ERR_NOT_WORKTREE)
3427 			error = wrap_not_worktree_error(error, "update",
3428 			    worktree_path);
3429 		goto done;
3430 	}
3431 
3432 	error = check_rebase_or_histedit_in_progress(worktree);
3433 	if (error)
3434 		goto done;
3435 
3436 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
3437 	    NULL, pack_fds);
3438 	if (error != NULL)
3439 		goto done;
3440 
3441 	error = apply_unveil(got_repo_get_path(repo), 0,
3442 	    got_worktree_get_root_path(worktree));
3443 	if (error)
3444 		goto done;
3445 
3446 	error = check_merge_in_progress(worktree, repo);
3447 	if (error)
3448 		goto done;
3449 
3450 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
3451 	if (error)
3452 		goto done;
3453 
3454 	error = got_ref_open(&head_ref, repo, branch_name ? branch_name :
3455 	    got_worktree_get_head_ref_name(worktree), 0);
3456 	if (error != NULL)
3457 		goto done;
3458 	if (commit_id_str == NULL) {
3459 		error = got_ref_resolve(&commit_id, repo, head_ref);
3460 		if (error != NULL)
3461 			goto done;
3462 		error = got_object_id_str(&commit_id_str, commit_id);
3463 		if (error != NULL)
3464 			goto done;
3465 	} else {
3466 		struct got_reflist_head refs;
3467 		TAILQ_INIT(&refs);
3468 		error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name,
3469 		    NULL);
3470 		if (error)
3471 			goto done;
3472 		error = got_repo_match_object_id(&commit_id, NULL,
3473 		    commit_id_str, GOT_OBJ_TYPE_COMMIT, &refs, repo);
3474 		got_ref_list_free(&refs);
3475 		free(commit_id_str);
3476 		commit_id_str = NULL;
3477 		if (error)
3478 			goto done;
3479 		error = got_object_id_str(&commit_id_str, commit_id);
3480 		if (error)
3481 			goto done;
3482 	}
3483 
3484 	if (branch_name) {
3485 		struct got_object_id *head_commit_id;
3486 		TAILQ_FOREACH(pe, &paths, entry) {
3487 			if (pe->path_len == 0)
3488 				continue;
3489 			error = got_error_msg(GOT_ERR_BAD_PATH,
3490 			    "switching between branches requires that "
3491 			    "the entire work tree gets updated");
3492 			goto done;
3493 		}
3494 		error = got_ref_resolve(&head_commit_id, repo, head_ref);
3495 		if (error)
3496 			goto done;
3497 		error = check_linear_ancestry(commit_id, head_commit_id, 0,
3498 		    repo);
3499 		free(head_commit_id);
3500 		if (error != NULL)
3501 			goto done;
3502 		error = check_same_branch(commit_id, head_ref, NULL, repo);
3503 		if (error)
3504 			goto done;
3505 		error = switch_head_ref(head_ref, commit_id, worktree, repo);
3506 		if (error)
3507 			goto done;
3508 	} else {
3509 		error = check_linear_ancestry(commit_id,
3510 		    got_worktree_get_base_commit_id(worktree), 0, repo);
3511 		if (error != NULL) {
3512 			if (error->code == GOT_ERR_ANCESTRY)
3513 				error = got_error(GOT_ERR_BRANCH_MOVED);
3514 			goto done;
3515 		}
3516 		error = check_same_branch(commit_id, head_ref, NULL, repo);
3517 		if (error)
3518 			goto done;
3519 	}
3520 
3521 	if (got_object_id_cmp(got_worktree_get_base_commit_id(worktree),
3522 	    commit_id) != 0) {
3523 		error = got_worktree_set_base_commit_id(worktree, repo,
3524 		    commit_id);
3525 		if (error)
3526 			goto done;
3527 	}
3528 
3529 	memset(&upa, 0, sizeof(upa));
3530 	upa.verbosity = verbosity;
3531 	error = got_worktree_checkout_files(worktree, &paths, repo,
3532 	    update_progress, &upa, check_cancelled, NULL);
3533 	if (error != NULL)
3534 		goto done;
3535 
3536 	if (upa.did_something) {
3537 		printf("Updated to %s: %s\n",
3538 		    got_worktree_get_head_ref_name(worktree), commit_id_str);
3539 	} else
3540 		printf("Already up-to-date\n");
3541 
3542 	print_update_progress_stats(&upa);
3543 done:
3544 	if (pack_fds) {
3545 		const struct got_error *pack_err =
3546 		    got_repo_pack_fds_close(pack_fds);
3547 		if (error == NULL)
3548 			error = pack_err;
3549 	}
3550 	free(worktree_path);
3551 	TAILQ_FOREACH(pe, &paths, entry)
3552 		free((char *)pe->path);
3553 	got_pathlist_free(&paths);
3554 	free(commit_id);
3555 	free(commit_id_str);
3556 	return error;
3557 }
3558 
3559 static const struct got_error *
3560 diff_blobs(struct got_object_id *blob_id1, struct got_object_id *blob_id2,
3561     const char *path, int diff_context, int ignore_whitespace,
3562     int force_text_diff, struct got_repository *repo, FILE *outfile)
3563 {
3564 	const struct got_error *err = NULL;
3565 	struct got_blob_object *blob1 = NULL, *blob2 = NULL;
3566 	FILE *f1 = NULL, *f2 = NULL;
3567 	int fd1 = -1, fd2 = -1;
3568 
3569 	fd1 = got_opentempfd();
3570 	if (fd1 == -1)
3571 		return got_error_from_errno("got_opentempfd");
3572 	fd2 = got_opentempfd();
3573 	if (fd2 == -1) {
3574 		err = got_error_from_errno("got_opentempfd");
3575 		goto done;
3576 	}
3577 
3578 	if (blob_id1) {
3579 		err = got_object_open_as_blob(&blob1, repo, blob_id1, 8192,
3580 		    fd1);
3581 		if (err)
3582 			goto done;
3583 	}
3584 
3585 	err = got_object_open_as_blob(&blob2, repo, blob_id2, 8192, fd2);
3586 	if (err)
3587 		goto done;
3588 
3589 	f1 = got_opentemp();
3590 	if (f1 == NULL) {
3591 		err = got_error_from_errno("got_opentemp");
3592 		goto done;
3593 	}
3594 	f2 = got_opentemp();
3595 	if (f2 == NULL) {
3596 		err = got_error_from_errno("got_opentemp");
3597 		goto done;
3598 	}
3599 
3600 	while (path[0] == '/')
3601 		path++;
3602 	err = got_diff_blob(NULL, NULL, blob1, blob2, f1, f2, path, path,
3603 	    GOT_DIFF_ALGORITHM_PATIENCE, diff_context, ignore_whitespace,
3604 	    force_text_diff, outfile);
3605 done:
3606 	if (fd1 != -1 && close(fd1) == -1 && err == NULL)
3607 		err = got_error_from_errno("close");
3608 	if (blob1)
3609 		got_object_blob_close(blob1);
3610 	if (fd2 != -1 && close(fd2) == -1 && err == NULL)
3611 		err = got_error_from_errno("close");
3612 	got_object_blob_close(blob2);
3613 	if (f1 && fclose(f1) == EOF && err == NULL)
3614 		err = got_error_from_errno("fclose");
3615 	if (f2 && fclose(f2) == EOF && err == NULL)
3616 		err = got_error_from_errno("fclose");
3617 	return err;
3618 }
3619 
3620 static const struct got_error *
3621 diff_trees(struct got_object_id *tree_id1, struct got_object_id *tree_id2,
3622     const char *path, int diff_context, int ignore_whitespace,
3623     int force_text_diff, struct got_repository *repo, FILE *outfile)
3624 {
3625 	const struct got_error *err = NULL;
3626 	struct got_tree_object *tree1 = NULL, *tree2 = NULL;
3627 	struct got_diff_blob_output_unidiff_arg arg;
3628 	FILE *f1 = NULL, *f2 = NULL;
3629 	int fd1 = -1, fd2 = -1;
3630 
3631 	if (tree_id1) {
3632 		err = got_object_open_as_tree(&tree1, repo, tree_id1);
3633 		if (err)
3634 			goto done;
3635 		fd1 = got_opentempfd();
3636 		if (fd1 == -1) {
3637 			err = got_error_from_errno("got_opentempfd");
3638 			goto done;
3639 		}
3640 	}
3641 
3642 	err = got_object_open_as_tree(&tree2, repo, tree_id2);
3643 	if (err)
3644 		goto done;
3645 
3646 	f1 = got_opentemp();
3647 	if (f1 == NULL) {
3648 		err = got_error_from_errno("got_opentemp");
3649 		goto done;
3650 	}
3651 
3652 	f2 = got_opentemp();
3653 	if (f2 == NULL) {
3654 		err = got_error_from_errno("got_opentemp");
3655 		goto done;
3656 	}
3657 	fd2 = got_opentempfd();
3658 	if (fd2 == -1) {
3659 		err = got_error_from_errno("got_opentempfd");
3660 		goto done;
3661 	}
3662 	arg.diff_context = diff_context;
3663 	arg.ignore_whitespace = ignore_whitespace;
3664 	arg.force_text_diff = force_text_diff;
3665 	arg.diff_algo = GOT_DIFF_ALGORITHM_PATIENCE;
3666 	arg.outfile = outfile;
3667 	arg.line_offsets = NULL;
3668 	arg.nlines = 0;
3669 	while (path[0] == '/')
3670 		path++;
3671 	err = got_diff_tree(tree1, tree2, f1, f2, fd1, fd2, path, path, repo,
3672 	    got_diff_blob_output_unidiff, &arg, 1);
3673 done:
3674 	if (tree1)
3675 		got_object_tree_close(tree1);
3676 	if (tree2)
3677 		got_object_tree_close(tree2);
3678 	if (f1 && fclose(f1) == EOF && err == NULL)
3679 		err = got_error_from_errno("fclose");
3680 	if (f2 && fclose(f2) == EOF && err == NULL)
3681 		err = got_error_from_errno("fclose");
3682 	if (fd1 != -1 && close(fd1) == -1 && err == NULL)
3683 		err = got_error_from_errno("close");
3684 	if (fd2 != -1 && close(fd2) == -1 && err == NULL)
3685 		err = got_error_from_errno("close");
3686 	return err;
3687 }
3688 
3689 static const struct got_error *
3690 get_changed_paths(struct got_pathlist_head *paths,
3691     struct got_commit_object *commit, struct got_repository *repo)
3692 {
3693 	const struct got_error *err = NULL;
3694 	struct got_object_id *tree_id1 = NULL, *tree_id2 = NULL;
3695 	struct got_tree_object *tree1 = NULL, *tree2 = NULL;
3696 	struct got_object_qid *qid;
3697 
3698 	qid = STAILQ_FIRST(got_object_commit_get_parent_ids(commit));
3699 	if (qid != NULL) {
3700 		struct got_commit_object *pcommit;
3701 		err = got_object_open_as_commit(&pcommit, repo,
3702 		    &qid->id);
3703 		if (err)
3704 			return err;
3705 
3706 		tree_id1 = got_object_id_dup(
3707 		    got_object_commit_get_tree_id(pcommit));
3708 		if (tree_id1 == NULL) {
3709 			got_object_commit_close(pcommit);
3710 			return got_error_from_errno("got_object_id_dup");
3711 		}
3712 		got_object_commit_close(pcommit);
3713 
3714 	}
3715 
3716 	if (tree_id1) {
3717 		err = got_object_open_as_tree(&tree1, repo, tree_id1);
3718 		if (err)
3719 			goto done;
3720 	}
3721 
3722 	tree_id2 = got_object_commit_get_tree_id(commit);
3723 	err = got_object_open_as_tree(&tree2, repo, tree_id2);
3724 	if (err)
3725 		goto done;
3726 
3727 	err = got_diff_tree(tree1, tree2, NULL, NULL, -1, -1, "", "", repo,
3728 	    got_diff_tree_collect_changed_paths, paths, 0);
3729 done:
3730 	if (tree1)
3731 		got_object_tree_close(tree1);
3732 	if (tree2)
3733 		got_object_tree_close(tree2);
3734 	free(tree_id1);
3735 	return err;
3736 }
3737 
3738 static const struct got_error *
3739 print_patch(struct got_commit_object *commit, struct got_object_id *id,
3740     const char *path, int diff_context, struct got_repository *repo,
3741     FILE *outfile)
3742 {
3743 	const struct got_error *err = NULL;
3744 	struct got_commit_object *pcommit = NULL;
3745 	char *id_str1 = NULL, *id_str2 = NULL;
3746 	struct got_object_id *obj_id1 = NULL, *obj_id2 = NULL;
3747 	struct got_object_qid *qid;
3748 
3749 	qid = STAILQ_FIRST(got_object_commit_get_parent_ids(commit));
3750 	if (qid != NULL) {
3751 		err = got_object_open_as_commit(&pcommit, repo,
3752 		    &qid->id);
3753 		if (err)
3754 			return err;
3755 		err = got_object_id_str(&id_str1, &qid->id);
3756 		if (err)
3757 			goto done;
3758 	}
3759 
3760 	err = got_object_id_str(&id_str2, id);
3761 	if (err)
3762 		goto done;
3763 
3764 	if (path && path[0] != '\0') {
3765 		int obj_type;
3766 		err = got_object_id_by_path(&obj_id2, repo, commit, path);
3767 		if (err)
3768 			goto done;
3769 		if (pcommit) {
3770 			err = got_object_id_by_path(&obj_id1, repo,
3771 			    pcommit, path);
3772 			if (err) {
3773 				if (err->code != GOT_ERR_NO_TREE_ENTRY) {
3774 					free(obj_id2);
3775 					goto done;
3776 				}
3777 			}
3778 		}
3779 		err = got_object_get_type(&obj_type, repo, obj_id2);
3780 		if (err) {
3781 			free(obj_id2);
3782 			goto done;
3783 		}
3784 		fprintf(outfile,
3785 		    "diff %s %s\n", id_str1 ? id_str1 : "/dev/null", id_str2);
3786 		fprintf(outfile, "commit - %s\n",
3787 		    id_str1 ? id_str1 : "/dev/null");
3788 		fprintf(outfile, "commit + %s\n", id_str2);
3789 		switch (obj_type) {
3790 		case GOT_OBJ_TYPE_BLOB:
3791 			err = diff_blobs(obj_id1, obj_id2, path, diff_context,
3792 			    0, 0, repo, outfile);
3793 			break;
3794 		case GOT_OBJ_TYPE_TREE:
3795 			err = diff_trees(obj_id1, obj_id2, path, diff_context,
3796 			    0, 0, repo, outfile);
3797 			break;
3798 		default:
3799 			err = got_error(GOT_ERR_OBJ_TYPE);
3800 			break;
3801 		}
3802 		free(obj_id1);
3803 		free(obj_id2);
3804 	} else {
3805 		obj_id2 = got_object_commit_get_tree_id(commit);
3806 		if (pcommit)
3807 			obj_id1 = got_object_commit_get_tree_id(pcommit);
3808 		fprintf(outfile,
3809 		    "diff %s %s\n", id_str1 ? id_str1 : "/dev/null", id_str2);
3810 		fprintf(outfile, "commit - %s\n",
3811 		    id_str1 ? id_str1 : "/dev/null");
3812 		fprintf(outfile, "commit + %s\n", id_str2);
3813 		err = diff_trees(obj_id1, obj_id2, "", diff_context, 0, 0,
3814 		    repo, outfile);
3815 	}
3816 done:
3817 	free(id_str1);
3818 	free(id_str2);
3819 	if (pcommit)
3820 		got_object_commit_close(pcommit);
3821 	return err;
3822 }
3823 
3824 static char *
3825 get_datestr(time_t *time, char *datebuf)
3826 {
3827 	struct tm mytm, *tm;
3828 	char *p, *s;
3829 
3830 	tm = gmtime_r(time, &mytm);
3831 	if (tm == NULL)
3832 		return NULL;
3833 	s = asctime_r(tm, datebuf);
3834 	if (s == NULL)
3835 		return NULL;
3836 	p = strchr(s, '\n');
3837 	if (p)
3838 		*p = '\0';
3839 	return s;
3840 }
3841 
3842 static const struct got_error *
3843 match_commit(int *have_match, struct got_object_id *id,
3844     struct got_commit_object *commit, regex_t *regex)
3845 {
3846 	const struct got_error *err = NULL;
3847 	regmatch_t regmatch;
3848 	char *id_str = NULL, *logmsg = NULL;
3849 
3850 	*have_match = 0;
3851 
3852 	err = got_object_id_str(&id_str, id);
3853 	if (err)
3854 		return err;
3855 
3856 	err = got_object_commit_get_logmsg(&logmsg, commit);
3857 	if (err)
3858 		goto done;
3859 
3860 	if (regexec(regex, got_object_commit_get_author(commit), 1,
3861 	    &regmatch, 0) == 0 ||
3862 	    regexec(regex, got_object_commit_get_committer(commit), 1,
3863 	    &regmatch, 0) == 0 ||
3864 	    regexec(regex, id_str, 1, &regmatch, 0) == 0 ||
3865 	    regexec(regex, logmsg, 1, &regmatch, 0) == 0)
3866 		*have_match = 1;
3867 done:
3868 	free(id_str);
3869 	free(logmsg);
3870 	return err;
3871 }
3872 
3873 static void
3874 match_changed_paths(int *have_match, struct got_pathlist_head *changed_paths,
3875     regex_t *regex)
3876 {
3877 	regmatch_t regmatch;
3878 	struct got_pathlist_entry *pe;
3879 
3880 	*have_match = 0;
3881 
3882 	TAILQ_FOREACH(pe, changed_paths, entry) {
3883 		if (regexec(regex, pe->path, 1, &regmatch, 0) == 0) {
3884 			*have_match = 1;
3885 			break;
3886 		}
3887 	}
3888 }
3889 
3890 static const struct got_error *
3891 match_patch(int *have_match, struct got_commit_object *commit,
3892     struct got_object_id *id, const char *path, int diff_context,
3893     struct got_repository *repo, regex_t *regex, FILE *f)
3894 {
3895 	const struct got_error *err = NULL;
3896 	char *line = NULL;
3897 	size_t linesize = 0;
3898 	ssize_t linelen;
3899 	regmatch_t regmatch;
3900 
3901 	*have_match = 0;
3902 
3903 	err = got_opentemp_truncate(f);
3904 	if (err)
3905 		return err;
3906 
3907 	err = print_patch(commit, id, path, diff_context, repo, f);
3908 	if (err)
3909 		goto done;
3910 
3911 	if (fseeko(f, 0L, SEEK_SET) == -1) {
3912 		err = got_error_from_errno("fseeko");
3913 		goto done;
3914 	}
3915 
3916 	while ((linelen = getline(&line, &linesize, f)) != -1) {
3917 		if (regexec(regex, line, 1, &regmatch, 0) == 0) {
3918 			*have_match = 1;
3919 			break;
3920 		}
3921 	}
3922 done:
3923 	free(line);
3924 	return err;
3925 }
3926 
3927 #define GOT_COMMIT_SEP_STR "-----------------------------------------------\n"
3928 
3929 static const struct got_error*
3930 build_refs_str(char **refs_str, struct got_reflist_head *refs,
3931     struct got_object_id *id, struct got_repository *repo,
3932     int local_only)
3933 {
3934 	static const struct got_error *err = NULL;
3935 	struct got_reflist_entry *re;
3936 	char *s;
3937 	const char *name;
3938 
3939 	*refs_str = NULL;
3940 
3941 	TAILQ_FOREACH(re, refs, entry) {
3942 		struct got_tag_object *tag = NULL;
3943 		struct got_object_id *ref_id;
3944 		int cmp;
3945 
3946 		name = got_ref_get_name(re->ref);
3947 		if (strcmp(name, GOT_REF_HEAD) == 0)
3948 			continue;
3949 		if (strncmp(name, "refs/", 5) == 0)
3950 			name += 5;
3951 		if (strncmp(name, "got/", 4) == 0)
3952 			continue;
3953 		if (strncmp(name, "heads/", 6) == 0)
3954 			name += 6;
3955 		if (strncmp(name, "remotes/", 8) == 0) {
3956 			if (local_only)
3957 				continue;
3958 			name += 8;
3959 			s = strstr(name, "/" GOT_REF_HEAD);
3960 			if (s != NULL && s[strlen(s)] == '\0')
3961 				continue;
3962 		}
3963 		err = got_ref_resolve(&ref_id, repo, re->ref);
3964 		if (err)
3965 			break;
3966 		if (strncmp(name, "tags/", 5) == 0) {
3967 			err = got_object_open_as_tag(&tag, repo, ref_id);
3968 			if (err) {
3969 				if (err->code != GOT_ERR_OBJ_TYPE) {
3970 					free(ref_id);
3971 					break;
3972 				}
3973 				/* Ref points at something other than a tag. */
3974 				err = NULL;
3975 				tag = NULL;
3976 			}
3977 		}
3978 		cmp = got_object_id_cmp(tag ?
3979 		    got_object_tag_get_object_id(tag) : ref_id, id);
3980 		free(ref_id);
3981 		if (tag)
3982 			got_object_tag_close(tag);
3983 		if (cmp != 0)
3984 			continue;
3985 		s = *refs_str;
3986 		if (asprintf(refs_str, "%s%s%s", s ? s : "",
3987 		    s ? ", " : "", name) == -1) {
3988 			err = got_error_from_errno("asprintf");
3989 			free(s);
3990 			*refs_str = NULL;
3991 			break;
3992 		}
3993 		free(s);
3994 	}
3995 
3996 	return err;
3997 }
3998 
3999 static const struct got_error *
4000 print_commit_oneline(struct got_commit_object *commit, struct got_object_id *id,
4001     struct got_repository *repo, struct got_reflist_object_id_map *refs_idmap)
4002 {
4003 	const struct got_error *err = NULL;
4004 	char *ref_str = NULL, *id_str = NULL, *logmsg0 = NULL;
4005 	char *comma, *s, *nl;
4006 	struct got_reflist_head *refs;
4007 	char datebuf[12]; /* YYYY-MM-DD + SPACE + NUL */
4008 	struct tm tm;
4009 	time_t committer_time;
4010 
4011 	refs = got_reflist_object_id_map_lookup(refs_idmap, id);
4012 	if (refs) {
4013 		err = build_refs_str(&ref_str, refs, id, repo, 1);
4014 		if (err)
4015 			return err;
4016 
4017 		/* Display the first matching ref only. */
4018 		if (ref_str && (comma = strchr(ref_str, ',')) != NULL)
4019 			*comma = '\0';
4020 	}
4021 
4022 	if (ref_str == NULL) {
4023 		err = got_object_id_str(&id_str, id);
4024 		if (err)
4025 			return err;
4026 	}
4027 
4028 	committer_time = got_object_commit_get_committer_time(commit);
4029 	if (gmtime_r(&committer_time, &tm) == NULL) {
4030 		err = got_error_from_errno("gmtime_r");
4031 		goto done;
4032 	}
4033 	if (strftime(datebuf, sizeof(datebuf), "%G-%m-%d ", &tm) == 0) {
4034 		err = got_error(GOT_ERR_NO_SPACE);
4035 		goto done;
4036 	}
4037 
4038 	err = got_object_commit_get_logmsg(&logmsg0, commit);
4039 	if (err)
4040 		goto done;
4041 
4042 	s = logmsg0;
4043 	while (isspace((unsigned char)s[0]))
4044 		s++;
4045 
4046 	nl = strchr(s, '\n');
4047 	if (nl) {
4048 		*nl = '\0';
4049 	}
4050 
4051 	if (ref_str)
4052 		printf("%s%-7s %s\n", datebuf, ref_str, s);
4053 	else
4054 		printf("%s%.7s %s\n", datebuf, id_str, s);
4055 
4056 	if (fflush(stdout) != 0 && err == NULL)
4057 		err = got_error_from_errno("fflush");
4058 done:
4059 	free(id_str);
4060 	free(ref_str);
4061 	free(logmsg0);
4062 	return err;
4063 }
4064 
4065 static const struct got_error *
4066 print_commit(struct got_commit_object *commit, struct got_object_id *id,
4067     struct got_repository *repo, const char *path,
4068     struct got_pathlist_head *changed_paths, int show_patch,
4069     int diff_context, struct got_reflist_object_id_map *refs_idmap,
4070     const char *custom_refs_str)
4071 {
4072 	const struct got_error *err = NULL;
4073 	char *id_str, *datestr, *logmsg0, *logmsg, *line;
4074 	char datebuf[26];
4075 	time_t committer_time;
4076 	const char *author, *committer;
4077 	char *refs_str = NULL;
4078 
4079 	err = got_object_id_str(&id_str, id);
4080 	if (err)
4081 		return err;
4082 
4083 	if (custom_refs_str == NULL) {
4084 		struct got_reflist_head *refs;
4085 		refs = got_reflist_object_id_map_lookup(refs_idmap, id);
4086 		if (refs) {
4087 			err = build_refs_str(&refs_str, refs, id, repo, 0);
4088 			if (err)
4089 				goto done;
4090 		}
4091 	}
4092 
4093 	printf(GOT_COMMIT_SEP_STR);
4094 	if (custom_refs_str)
4095 		printf("commit %s (%s)\n", id_str, custom_refs_str); 
4096 	else
4097 		printf("commit %s%s%s%s\n", id_str, refs_str ? " (" : "",
4098 		    refs_str ? refs_str : "", refs_str ? ")" : "");
4099 	free(id_str);
4100 	id_str = NULL;
4101 	free(refs_str);
4102 	refs_str = NULL;
4103 	printf("from: %s\n", got_object_commit_get_author(commit));
4104 	committer_time = got_object_commit_get_committer_time(commit);
4105 	datestr = get_datestr(&committer_time, datebuf);
4106 	if (datestr)
4107 		printf("date: %s UTC\n", datestr);
4108 	author = got_object_commit_get_author(commit);
4109 	committer = got_object_commit_get_committer(commit);
4110 	if (strcmp(author, committer) != 0)
4111 		printf("via: %s\n", committer);
4112 	if (got_object_commit_get_nparents(commit) > 1) {
4113 		const struct got_object_id_queue *parent_ids;
4114 		struct got_object_qid *qid;
4115 		int n = 1;
4116 		parent_ids = got_object_commit_get_parent_ids(commit);
4117 		STAILQ_FOREACH(qid, parent_ids, entry) {
4118 			err = got_object_id_str(&id_str, &qid->id);
4119 			if (err)
4120 				goto done;
4121 			printf("parent %d: %s\n", n++, id_str);
4122 			free(id_str);
4123 			id_str = NULL;
4124 		}
4125 	}
4126 
4127 	err = got_object_commit_get_logmsg(&logmsg0, commit);
4128 	if (err)
4129 		goto done;
4130 
4131 	logmsg = logmsg0;
4132 	do {
4133 		line = strsep(&logmsg, "\n");
4134 		if (line)
4135 			printf(" %s\n", line);
4136 	} while (line);
4137 	free(logmsg0);
4138 
4139 	if (changed_paths) {
4140 		struct got_pathlist_entry *pe;
4141 		TAILQ_FOREACH(pe, changed_paths, entry) {
4142 			struct got_diff_changed_path *cp = pe->data;
4143 			printf(" %c  %s\n", cp->status, pe->path);
4144 		}
4145 		printf("\n");
4146 	}
4147 	if (show_patch) {
4148 		err = print_patch(commit, id, path, diff_context, repo, stdout);
4149 		if (err == 0)
4150 			printf("\n");
4151 	}
4152 
4153 	if (fflush(stdout) != 0 && err == NULL)
4154 		err = got_error_from_errno("fflush");
4155 done:
4156 	free(id_str);
4157 	free(refs_str);
4158 	return err;
4159 }
4160 
4161 static const struct got_error *
4162 print_commits(struct got_object_id *root_id, struct got_object_id *end_id,
4163     struct got_repository *repo, const char *path, int show_changed_paths,
4164     int show_patch, const char *search_pattern, int diff_context, int limit,
4165     int log_branches, int reverse_display_order,
4166     struct got_reflist_object_id_map *refs_idmap, int one_line,
4167     FILE *tmpfile)
4168 {
4169 	const struct got_error *err;
4170 	struct got_commit_graph *graph;
4171 	regex_t regex;
4172 	int have_match;
4173 	struct got_object_id_queue reversed_commits;
4174 	struct got_object_qid *qid;
4175 	struct got_commit_object *commit;
4176 	struct got_pathlist_head changed_paths;
4177 	struct got_pathlist_entry *pe;
4178 
4179 	STAILQ_INIT(&reversed_commits);
4180 	TAILQ_INIT(&changed_paths);
4181 
4182 	if (search_pattern && regcomp(&regex, search_pattern,
4183 	    REG_EXTENDED | REG_NOSUB | REG_NEWLINE))
4184 		return got_error_msg(GOT_ERR_REGEX, search_pattern);
4185 
4186 	err = got_commit_graph_open(&graph, path, !log_branches);
4187 	if (err)
4188 		return err;
4189 	err = got_commit_graph_iter_start(graph, root_id, repo,
4190 	    check_cancelled, NULL);
4191 	if (err)
4192 		goto done;
4193 	for (;;) {
4194 		struct got_object_id *id;
4195 
4196 		if (sigint_received || sigpipe_received)
4197 			break;
4198 
4199 		err = got_commit_graph_iter_next(&id, graph, repo,
4200 		    check_cancelled, NULL);
4201 		if (err) {
4202 			if (err->code == GOT_ERR_ITER_COMPLETED)
4203 				err = NULL;
4204 			break;
4205 		}
4206 		if (id == NULL)
4207 			break;
4208 
4209 		err = got_object_open_as_commit(&commit, repo, id);
4210 		if (err)
4211 			break;
4212 
4213 		if (show_changed_paths && !reverse_display_order) {
4214 			err = get_changed_paths(&changed_paths, commit, repo);
4215 			if (err)
4216 				break;
4217 		}
4218 
4219 		if (search_pattern) {
4220 			err = match_commit(&have_match, id, commit, &regex);
4221 			if (err) {
4222 				got_object_commit_close(commit);
4223 				break;
4224 			}
4225 			if (have_match == 0 && show_changed_paths)
4226 				match_changed_paths(&have_match,
4227 				    &changed_paths, &regex);
4228 			if (have_match == 0 && show_patch) {
4229 				err = match_patch(&have_match, commit, id,
4230 				    path, diff_context, repo, &regex,
4231 				    tmpfile);
4232 				if (err)
4233 					break;
4234 			}
4235 			if (have_match == 0) {
4236 				got_object_commit_close(commit);
4237 				TAILQ_FOREACH(pe, &changed_paths, entry) {
4238 					free((char *)pe->path);
4239 					free(pe->data);
4240 				}
4241 				got_pathlist_free(&changed_paths);
4242 				continue;
4243 			}
4244 		}
4245 
4246 		if (reverse_display_order) {
4247 			err = got_object_qid_alloc(&qid, id);
4248 			if (err)
4249 				break;
4250 			STAILQ_INSERT_HEAD(&reversed_commits, qid, entry);
4251 			got_object_commit_close(commit);
4252 		} else {
4253 			if (one_line)
4254 				err = print_commit_oneline(commit, id,
4255 				    repo, refs_idmap);
4256 			else
4257 				err = print_commit(commit, id, repo, path,
4258 				    show_changed_paths ? &changed_paths : NULL,
4259 				    show_patch, diff_context, refs_idmap, NULL);
4260 			got_object_commit_close(commit);
4261 			if (err)
4262 				break;
4263 		}
4264 		if ((limit && --limit == 0) ||
4265 		    (end_id && got_object_id_cmp(id, end_id) == 0))
4266 			break;
4267 
4268 		TAILQ_FOREACH(pe, &changed_paths, entry) {
4269 			free((char *)pe->path);
4270 			free(pe->data);
4271 		}
4272 		got_pathlist_free(&changed_paths);
4273 	}
4274 	if (reverse_display_order) {
4275 		STAILQ_FOREACH(qid, &reversed_commits, entry) {
4276 			err = got_object_open_as_commit(&commit, repo,
4277 			    &qid->id);
4278 			if (err)
4279 				break;
4280 			if (show_changed_paths) {
4281 				err = get_changed_paths(&changed_paths,
4282 				    commit, repo);
4283 				if (err)
4284 					break;
4285 			}
4286 			if (one_line)
4287 				err = print_commit_oneline(commit, &qid->id,
4288 				    repo, refs_idmap);
4289 			else
4290 				err = print_commit(commit, &qid->id, repo, path,
4291 				    show_changed_paths ? &changed_paths : NULL,
4292 				    show_patch, diff_context, refs_idmap, NULL);
4293 			got_object_commit_close(commit);
4294 			if (err)
4295 				break;
4296 			TAILQ_FOREACH(pe, &changed_paths, entry) {
4297 				free((char *)pe->path);
4298 				free(pe->data);
4299 			}
4300 			got_pathlist_free(&changed_paths);
4301 		}
4302 	}
4303 done:
4304 	while (!STAILQ_EMPTY(&reversed_commits)) {
4305 		qid = STAILQ_FIRST(&reversed_commits);
4306 		STAILQ_REMOVE_HEAD(&reversed_commits, entry);
4307 		got_object_qid_free(qid);
4308 	}
4309 	TAILQ_FOREACH(pe, &changed_paths, entry) {
4310 		free((char *)pe->path);
4311 		free(pe->data);
4312 	}
4313 	got_pathlist_free(&changed_paths);
4314 	if (search_pattern)
4315 		regfree(&regex);
4316 	got_commit_graph_close(graph);
4317 	return err;
4318 }
4319 
4320 __dead static void
4321 usage_log(void)
4322 {
4323 	fprintf(stderr, "usage: %s log [-b] [-p] [-P] [-s] [-c commit] "
4324 	    "[-C number] [ -l N ] [-x commit] [-S search-pattern] "
4325 	    "[-r repository-path] [-R] [path]\n", getprogname());
4326 	exit(1);
4327 }
4328 
4329 static int
4330 get_default_log_limit(void)
4331 {
4332 	const char *got_default_log_limit;
4333 	long long n;
4334 	const char *errstr;
4335 
4336 	got_default_log_limit = getenv("GOT_LOG_DEFAULT_LIMIT");
4337 	if (got_default_log_limit == NULL)
4338 		return 0;
4339 	n = strtonum(got_default_log_limit, 0, INT_MAX, &errstr);
4340 	if (errstr != NULL)
4341 		return 0;
4342 	return n;
4343 }
4344 
4345 static const struct got_error *
4346 cmd_log(int argc, char *argv[])
4347 {
4348 	const struct got_error *error;
4349 	struct got_repository *repo = NULL;
4350 	struct got_worktree *worktree = NULL;
4351 	struct got_object_id *start_id = NULL, *end_id = NULL;
4352 	char *repo_path = NULL, *path = NULL, *cwd = NULL, *in_repo_path = NULL;
4353 	const char *start_commit = NULL, *end_commit = NULL;
4354 	const char *search_pattern = NULL;
4355 	int diff_context = -1, ch;
4356 	int show_changed_paths = 0, show_patch = 0, limit = 0, log_branches = 0;
4357 	int reverse_display_order = 0, one_line = 0;
4358 	const char *errstr;
4359 	struct got_reflist_head refs;
4360 	struct got_reflist_object_id_map *refs_idmap = NULL;
4361 	FILE *tmpfile = NULL;
4362 	int *pack_fds = NULL;
4363 
4364 	TAILQ_INIT(&refs);
4365 
4366 #ifndef PROFILE
4367 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
4368 	    NULL)
4369 	    == -1)
4370 		err(1, "pledge");
4371 #endif
4372 
4373 	limit = get_default_log_limit();
4374 
4375 	while ((ch = getopt(argc, argv, "bpPc:C:l:r:RsS:x:")) != -1) {
4376 		switch (ch) {
4377 		case 'p':
4378 			show_patch = 1;
4379 			break;
4380 		case 'P':
4381 			show_changed_paths = 1;
4382 			break;
4383 		case 'c':
4384 			start_commit = optarg;
4385 			break;
4386 		case 'C':
4387 			diff_context = strtonum(optarg, 0, GOT_DIFF_MAX_CONTEXT,
4388 			    &errstr);
4389 			if (errstr != NULL)
4390 				errx(1, "number of context lines is %s: %s",
4391 				    errstr, optarg);
4392 			break;
4393 		case 'l':
4394 			limit = strtonum(optarg, 0, INT_MAX, &errstr);
4395 			if (errstr != NULL)
4396 				errx(1, "number of commits is %s: %s",
4397 				    errstr, optarg);
4398 			break;
4399 		case 'b':
4400 			log_branches = 1;
4401 			break;
4402 		case 'r':
4403 			repo_path = realpath(optarg, NULL);
4404 			if (repo_path == NULL)
4405 				return got_error_from_errno2("realpath",
4406 				    optarg);
4407 			got_path_strip_trailing_slashes(repo_path);
4408 			break;
4409 		case 'R':
4410 			reverse_display_order = 1;
4411 			break;
4412 		case 's':
4413 			one_line = 1;
4414 			break;
4415 		case 'S':
4416 			search_pattern = optarg;
4417 			break;
4418 		case 'x':
4419 			end_commit = optarg;
4420 			break;
4421 		default:
4422 			usage_log();
4423 			/* NOTREACHED */
4424 		}
4425 	}
4426 
4427 	argc -= optind;
4428 	argv += optind;
4429 
4430 	if (diff_context == -1)
4431 		diff_context = 3;
4432 	else if (!show_patch)
4433 		errx(1, "-C requires -p");
4434 
4435 	if (one_line && (show_patch || show_changed_paths))
4436 		errx(1, "cannot use -s with -p or -P");
4437 
4438 	cwd = getcwd(NULL, 0);
4439 	if (cwd == NULL) {
4440 		error = got_error_from_errno("getcwd");
4441 		goto done;
4442 	}
4443 
4444 	error = got_repo_pack_fds_open(&pack_fds);
4445 	if (error != NULL)
4446 		goto done;
4447 
4448 	if (repo_path == NULL) {
4449 		error = got_worktree_open(&worktree, cwd);
4450 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
4451 			goto done;
4452 		error = NULL;
4453 	}
4454 
4455 	if (argc == 1) {
4456 		if (worktree) {
4457 			error = got_worktree_resolve_path(&path, worktree,
4458 			    argv[0]);
4459 			if (error)
4460 				goto done;
4461 		} else {
4462 			path = strdup(argv[0]);
4463 			if (path == NULL) {
4464 				error = got_error_from_errno("strdup");
4465 				goto done;
4466 			}
4467 		}
4468 	} else if (argc != 0)
4469 		usage_log();
4470 
4471 	if (repo_path == NULL) {
4472 		repo_path = worktree ?
4473 		    strdup(got_worktree_get_repo_path(worktree)) : strdup(cwd);
4474 	}
4475 	if (repo_path == NULL) {
4476 		error = got_error_from_errno("strdup");
4477 		goto done;
4478 	}
4479 
4480 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
4481 	if (error != NULL)
4482 		goto done;
4483 
4484 	error = apply_unveil(got_repo_get_path(repo), 1,
4485 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
4486 	if (error)
4487 		goto done;
4488 
4489 	error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name, NULL);
4490 	if (error)
4491 		goto done;
4492 
4493 	error = got_reflist_object_id_map_create(&refs_idmap, &refs, repo);
4494 	if (error)
4495 		goto done;
4496 
4497 	if (start_commit == NULL) {
4498 		struct got_reference *head_ref;
4499 		struct got_commit_object *commit = NULL;
4500 		error = got_ref_open(&head_ref, repo,
4501 		    worktree ? got_worktree_get_head_ref_name(worktree)
4502 		    : GOT_REF_HEAD, 0);
4503 		if (error != NULL)
4504 			goto done;
4505 		error = got_ref_resolve(&start_id, repo, head_ref);
4506 		got_ref_close(head_ref);
4507 		if (error != NULL)
4508 			goto done;
4509 		error = got_object_open_as_commit(&commit, repo,
4510 		    start_id);
4511 		if (error != NULL)
4512 			goto done;
4513 		got_object_commit_close(commit);
4514 	} else {
4515 		error = got_repo_match_object_id(&start_id, NULL,
4516 		    start_commit, GOT_OBJ_TYPE_COMMIT, &refs, repo);
4517 		if (error != NULL)
4518 			goto done;
4519 	}
4520 	if (end_commit != NULL) {
4521 		error = got_repo_match_object_id(&end_id, NULL,
4522 		    end_commit, GOT_OBJ_TYPE_COMMIT, &refs, repo);
4523 		if (error != NULL)
4524 			goto done;
4525 	}
4526 
4527 	if (worktree) {
4528 		/*
4529 		 * If a path was specified on the command line it was resolved
4530 		 * to a path in the work tree above. Prepend the work tree's
4531 		 * path prefix to obtain the corresponding in-repository path.
4532 		 */
4533 		if (path) {
4534 			const char *prefix;
4535 			prefix = got_worktree_get_path_prefix(worktree);
4536 			if (asprintf(&in_repo_path, "%s%s%s", prefix,
4537 			    (path[0] != '\0') ? "/" : "", path) == -1) {
4538 				error = got_error_from_errno("asprintf");
4539 				goto done;
4540 			}
4541 		}
4542 	} else
4543 		error = got_repo_map_path(&in_repo_path, repo,
4544 		    path ? path : "");
4545 	if (error != NULL)
4546 		goto done;
4547 	if (in_repo_path) {
4548 		free(path);
4549 		path = in_repo_path;
4550 	}
4551 
4552 	if (worktree) {
4553 		/* Release work tree lock. */
4554 		got_worktree_close(worktree);
4555 		worktree = NULL;
4556 	}
4557 
4558 	if (search_pattern && show_patch) {
4559 		tmpfile = got_opentemp();
4560 		if (tmpfile == NULL) {
4561 			error = got_error_from_errno("got_opentemp");
4562 			goto done;
4563 		}
4564 	}
4565 
4566 	error = print_commits(start_id, end_id, repo, path ? path : "",
4567 	    show_changed_paths, show_patch, search_pattern, diff_context,
4568 	    limit, log_branches, reverse_display_order, refs_idmap, one_line,
4569 	    tmpfile);
4570 done:
4571 	free(path);
4572 	free(repo_path);
4573 	free(cwd);
4574 	if (worktree)
4575 		got_worktree_close(worktree);
4576 	if (repo) {
4577 		const struct got_error *close_err = got_repo_close(repo);
4578 		if (error == NULL)
4579 			error = close_err;
4580 	}
4581 	if (pack_fds) {
4582 		const struct got_error *pack_err =
4583 		    got_repo_pack_fds_close(pack_fds);
4584 		if (error == NULL)
4585 			error = pack_err;
4586 	}
4587 	if (refs_idmap)
4588 		got_reflist_object_id_map_free(refs_idmap);
4589 	if (tmpfile && fclose(tmpfile) == EOF && error == NULL)
4590 		error = got_error_from_errno("fclose");
4591 	got_ref_list_free(&refs);
4592 	return error;
4593 }
4594 
4595 __dead static void
4596 usage_diff(void)
4597 {
4598 	fprintf(stderr, "usage: %s diff [-a] [-c commit] [-C number] "
4599 	    "[-r repository-path] [-s] [-w] [-P] "
4600 	    "[object1 object2 | path ...]\n", getprogname());
4601 	exit(1);
4602 }
4603 
4604 struct print_diff_arg {
4605 	struct got_repository *repo;
4606 	struct got_worktree *worktree;
4607 	int diff_context;
4608 	const char *id_str;
4609 	int header_shown;
4610 	int diff_staged;
4611 	enum got_diff_algorithm diff_algo;
4612 	int ignore_whitespace;
4613 	int force_text_diff;
4614 	FILE *f1;
4615 	FILE *f2;
4616 };
4617 
4618 /*
4619  * Create a file which contains the target path of a symlink so we can feed
4620  * it as content to the diff engine.
4621  */
4622 static const struct got_error *
4623 get_symlink_target_file(int *fd, int dirfd, const char *de_name,
4624     const char *abspath)
4625 {
4626 	const struct got_error *err = NULL;
4627 	char target_path[PATH_MAX];
4628 	ssize_t target_len, outlen;
4629 
4630 	*fd = -1;
4631 
4632 	if (dirfd != -1) {
4633 		target_len = readlinkat(dirfd, de_name, target_path, PATH_MAX);
4634 		if (target_len == -1)
4635 			return got_error_from_errno2("readlinkat", abspath);
4636 	} else {
4637 		target_len = readlink(abspath, target_path, PATH_MAX);
4638 		if (target_len == -1)
4639 			return got_error_from_errno2("readlink", abspath);
4640 	}
4641 
4642 	*fd = got_opentempfd();
4643 	if (*fd == -1)
4644 		return got_error_from_errno("got_opentempfd");
4645 
4646 	outlen = write(*fd, target_path, target_len);
4647 	if (outlen == -1) {
4648 		err = got_error_from_errno("got_opentempfd");
4649 		goto done;
4650 	}
4651 
4652 	if (lseek(*fd, 0, SEEK_SET) == -1) {
4653 		err = got_error_from_errno2("lseek", abspath);
4654 		goto done;
4655 	}
4656 done:
4657 	if (err) {
4658 		close(*fd);
4659 		*fd = -1;
4660 	}
4661 	return err;
4662 }
4663 
4664 static const struct got_error *
4665 print_diff(void *arg, unsigned char status, unsigned char staged_status,
4666     const char *path, struct got_object_id *blob_id,
4667     struct got_object_id *staged_blob_id, struct got_object_id *commit_id,
4668     int dirfd, const char *de_name)
4669 {
4670 	struct print_diff_arg *a = arg;
4671 	const struct got_error *err = NULL;
4672 	struct got_blob_object *blob1 = NULL;
4673 	int fd = -1, fd1 = -1, fd2 = -1;
4674 	FILE *f2 = NULL;
4675 	char *abspath = NULL, *label1 = NULL;
4676 	struct stat sb;
4677 	off_t size1 = 0;
4678 	int f2_exists = 1;
4679 
4680 	if (a->diff_staged) {
4681 		if (staged_status != GOT_STATUS_MODIFY &&
4682 		    staged_status != GOT_STATUS_ADD &&
4683 		    staged_status != GOT_STATUS_DELETE)
4684 			return NULL;
4685 	} else {
4686 		if (staged_status == GOT_STATUS_DELETE)
4687 			return NULL;
4688 		if (status == GOT_STATUS_NONEXISTENT)
4689 			return got_error_set_errno(ENOENT, path);
4690 		if (status != GOT_STATUS_MODIFY &&
4691 		    status != GOT_STATUS_ADD &&
4692 		    status != GOT_STATUS_DELETE &&
4693 		    status != GOT_STATUS_CONFLICT)
4694 			return NULL;
4695 	}
4696 
4697 	err = got_opentemp_truncate(a->f1);
4698 	if (err)
4699 		return got_error_from_errno("got_opentemp_truncate");
4700 	err = got_opentemp_truncate(a->f2);
4701 	if (err)
4702 		return got_error_from_errno("got_opentemp_truncate");
4703 
4704 	if (!a->header_shown) {
4705 		printf("diff %s%s\n", a->diff_staged ? "-s " : "",
4706 		    got_worktree_get_root_path(a->worktree));
4707 		printf("commit - %s\n", a->id_str);
4708 		printf("path + %s%s\n",
4709 		    got_worktree_get_root_path(a->worktree),
4710 		    a->diff_staged ? " (staged changes)" : "");
4711 		a->header_shown = 1;
4712 	}
4713 
4714 	if (a->diff_staged) {
4715 		const char *label1 = NULL, *label2 = NULL;
4716 		switch (staged_status) {
4717 		case GOT_STATUS_MODIFY:
4718 			label1 = path;
4719 			label2 = path;
4720 			break;
4721 		case GOT_STATUS_ADD:
4722 			label2 = path;
4723 			break;
4724 		case GOT_STATUS_DELETE:
4725 			label1 = path;
4726 			break;
4727 		default:
4728 			return got_error(GOT_ERR_FILE_STATUS);
4729 		}
4730 		fd1 = got_opentempfd();
4731 		if (fd1 == -1) {
4732 			err = got_error_from_errno("got_opentempfd");
4733 			goto done;
4734 		}
4735 		fd2 = got_opentempfd();
4736 		if (fd2 == -1) {
4737 			err = got_error_from_errno("got_opentempfd");
4738 			goto done;
4739 		}
4740 		err = got_diff_objects_as_blobs(NULL, NULL, a->f1, a->f2,
4741 		    fd1, fd2, blob_id, staged_blob_id, label1, label2,
4742 		    a->diff_algo, a->diff_context, a->ignore_whitespace,
4743 		    a->force_text_diff, a->repo, stdout);
4744 		goto done;
4745 	}
4746 
4747 	fd1 = got_opentempfd();
4748 	if (fd1 == -1) {
4749 		err = got_error_from_errno("got_opentempfd");
4750 		goto done;
4751 	}
4752 
4753 	if (staged_status == GOT_STATUS_ADD ||
4754 	    staged_status == GOT_STATUS_MODIFY) {
4755 		char *id_str;
4756 		err = got_object_open_as_blob(&blob1, a->repo, staged_blob_id,
4757 		    8192, fd1);
4758 		if (err)
4759 			goto done;
4760 		err = got_object_id_str(&id_str, staged_blob_id);
4761 		if (err)
4762 			goto done;
4763 		if (asprintf(&label1, "%s (staged)", id_str) == -1) {
4764 			err = got_error_from_errno("asprintf");
4765 			free(id_str);
4766 			goto done;
4767 		}
4768 		free(id_str);
4769 	} else if (status != GOT_STATUS_ADD) {
4770 		err = got_object_open_as_blob(&blob1, a->repo, blob_id, 8192,
4771 		    fd1);
4772 		if (err)
4773 			goto done;
4774 	}
4775 
4776 	if (status != GOT_STATUS_DELETE) {
4777 		if (asprintf(&abspath, "%s/%s",
4778 		    got_worktree_get_root_path(a->worktree), path) == -1) {
4779 			err = got_error_from_errno("asprintf");
4780 			goto done;
4781 		}
4782 
4783 		if (dirfd != -1) {
4784 			fd = openat(dirfd, de_name,
4785 			    O_RDONLY | O_NOFOLLOW | O_CLOEXEC);
4786 			if (fd == -1) {
4787 				if (!got_err_open_nofollow_on_symlink()) {
4788 					err = got_error_from_errno2("openat",
4789 					    abspath);
4790 					goto done;
4791 				}
4792 				err = get_symlink_target_file(&fd, dirfd,
4793 				    de_name, abspath);
4794 				if (err)
4795 					goto done;
4796 			}
4797 		} else {
4798 			fd = open(abspath, O_RDONLY | O_NOFOLLOW | O_CLOEXEC);
4799 			if (fd == -1) {
4800 				if (!got_err_open_nofollow_on_symlink()) {
4801 					err = got_error_from_errno2("open",
4802 					    abspath);
4803 					goto done;
4804 				}
4805 				err = get_symlink_target_file(&fd, dirfd,
4806 				    de_name, abspath);
4807 				if (err)
4808 					goto done;
4809 			}
4810 		}
4811 		if (fstat(fd, &sb) == -1) {
4812 			err = got_error_from_errno2("fstat", abspath);
4813 			goto done;
4814 		}
4815 		f2 = fdopen(fd, "r");
4816 		if (f2 == NULL) {
4817 			err = got_error_from_errno2("fdopen", abspath);
4818 			goto done;
4819 		}
4820 		fd = -1;
4821 	} else {
4822 		sb.st_size = 0;
4823 		f2_exists = 0;
4824 	}
4825 
4826 	if (blob1) {
4827 		err = got_object_blob_dump_to_file(&size1, NULL, NULL,
4828 		    a->f1, blob1);
4829 		if (err)
4830 			goto done;
4831 	}
4832 
4833 	err = got_diff_blob_file(blob1, a->f1, size1, label1, f2 ? f2 : a->f2,
4834 	    f2_exists, sb.st_size, path, GOT_DIFF_ALGORITHM_PATIENCE,
4835 	    a->diff_context, a->ignore_whitespace, a->force_text_diff, stdout);
4836 done:
4837 	if (fd1 != -1 && close(fd1) == -1 && err == NULL)
4838 		err = got_error_from_errno("close");
4839 	if (fd2 != -1 && close(fd2) == -1 && err == NULL)
4840 		err = got_error_from_errno("close");
4841 	if (blob1)
4842 		got_object_blob_close(blob1);
4843 	if (fd != -1 && close(fd) == -1 && err == NULL)
4844 		err = got_error_from_errno("close");
4845 	if (f2 && fclose(f2) == EOF && err == NULL)
4846 		err = got_error_from_errno("fclose");
4847 	free(abspath);
4848 	return err;
4849 }
4850 
4851 static const struct got_error *
4852 cmd_diff(int argc, char *argv[])
4853 {
4854 	const struct got_error *error;
4855 	struct got_repository *repo = NULL;
4856 	struct got_worktree *worktree = NULL;
4857 	char *cwd = NULL, *repo_path = NULL;
4858 	const char *commit_args[2] = { NULL, NULL };
4859 	int ncommit_args = 0;
4860 	struct got_object_id *ids[2] = { NULL, NULL };
4861 	char *labels[2] = { NULL, NULL };
4862 	int type1 = GOT_OBJ_TYPE_ANY, type2 = GOT_OBJ_TYPE_ANY;
4863 	int diff_context = 3, diff_staged = 0, ignore_whitespace = 0, ch, i;
4864 	int force_text_diff = 0, force_path = 0, rflag = 0;
4865 	const char *errstr;
4866 	struct got_reflist_head refs;
4867 	struct got_pathlist_head paths;
4868 	struct got_pathlist_entry *pe;
4869 	FILE *f1 = NULL, *f2 = NULL;
4870 	int fd1 = -1, fd2 = -1;
4871 	int *pack_fds = NULL;
4872 
4873 	TAILQ_INIT(&refs);
4874 	TAILQ_INIT(&paths);
4875 
4876 #ifndef PROFILE
4877 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
4878 	    NULL) == -1)
4879 		err(1, "pledge");
4880 #endif
4881 
4882 	while ((ch = getopt(argc, argv, "ac:C:r:swP")) != -1) {
4883 		switch (ch) {
4884 		case 'a':
4885 			force_text_diff = 1;
4886 			break;
4887 		case 'c':
4888 			if (ncommit_args >= 2)
4889 				errx(1, "too many -c options used");
4890 			commit_args[ncommit_args++] = optarg;
4891 			break;
4892 		case 'C':
4893 			diff_context = strtonum(optarg, 0, GOT_DIFF_MAX_CONTEXT,
4894 			    &errstr);
4895 			if (errstr != NULL)
4896 				errx(1, "number of context lines is %s: %s",
4897 				    errstr, optarg);
4898 			break;
4899 		case 'r':
4900 			repo_path = realpath(optarg, NULL);
4901 			if (repo_path == NULL)
4902 				return got_error_from_errno2("realpath",
4903 				    optarg);
4904 			got_path_strip_trailing_slashes(repo_path);
4905 			rflag = 1;
4906 			break;
4907 		case 's':
4908 			diff_staged = 1;
4909 			break;
4910 		case 'w':
4911 			ignore_whitespace = 1;
4912 			break;
4913 		case 'P':
4914 			force_path = 1;
4915 			break;
4916 		default:
4917 			usage_diff();
4918 			/* NOTREACHED */
4919 		}
4920 	}
4921 
4922 	argc -= optind;
4923 	argv += optind;
4924 
4925 	cwd = getcwd(NULL, 0);
4926 	if (cwd == NULL) {
4927 		error = got_error_from_errno("getcwd");
4928 		goto done;
4929 	}
4930 
4931 	error = got_repo_pack_fds_open(&pack_fds);
4932 	if (error != NULL)
4933 		goto done;
4934 
4935 	if (repo_path == NULL) {
4936 		error = got_worktree_open(&worktree, cwd);
4937 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
4938 			goto done;
4939 		else
4940 			error = NULL;
4941 		if (worktree) {
4942 			repo_path =
4943 			    strdup(got_worktree_get_repo_path(worktree));
4944 			if (repo_path == NULL) {
4945 				error = got_error_from_errno("strdup");
4946 				goto done;
4947 			}
4948 		} else {
4949 			repo_path = strdup(cwd);
4950 			if (repo_path == NULL) {
4951 				error = got_error_from_errno("strdup");
4952 				goto done;
4953 			}
4954 		}
4955 	}
4956 
4957 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
4958 	free(repo_path);
4959 	if (error != NULL)
4960 		goto done;
4961 
4962 	if (rflag || worktree == NULL || ncommit_args > 0) {
4963 		if (force_path) {
4964 			error = got_error_msg(GOT_ERR_NOT_IMPL,
4965 			    "-P option can only be used when diffing "
4966 			    "a work tree");
4967 			goto done;
4968 		}
4969 		if (diff_staged) {
4970 			error = got_error_msg(GOT_ERR_NOT_IMPL,
4971 			    "-s option can only be used when diffing "
4972 			    "a work tree");
4973 			goto done;
4974 		}
4975 	}
4976 
4977 	error = apply_unveil(got_repo_get_path(repo), 1,
4978 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
4979 	if (error)
4980 		goto done;
4981 
4982 	if ((!force_path && argc == 2) || ncommit_args > 0) {
4983 		int obj_type = (ncommit_args > 0 ?
4984 		    GOT_OBJ_TYPE_COMMIT : GOT_OBJ_TYPE_ANY);
4985 		error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name,
4986 		    NULL);
4987 		if (error)
4988 			goto done;
4989 		for (i = 0; i < (ncommit_args > 0 ? ncommit_args : argc); i++) {
4990 			const char *arg;
4991 			if (ncommit_args > 0)
4992 				arg = commit_args[i];
4993 			else
4994 				arg = argv[i];
4995 			error = got_repo_match_object_id(&ids[i], &labels[i],
4996 			    arg, obj_type, &refs, repo);
4997 			if (error) {
4998 				if (error->code != GOT_ERR_NOT_REF &&
4999 				    error->code != GOT_ERR_NO_OBJ)
5000 					goto done;
5001 				if (ncommit_args > 0)
5002 					goto done;
5003 				error = NULL;
5004 				break;
5005 			}
5006 		}
5007 	}
5008 
5009 	f1 = got_opentemp();
5010 	if (f1 == NULL) {
5011 		error = got_error_from_errno("got_opentemp");
5012 		goto done;
5013 	}
5014 
5015 	f2 = got_opentemp();
5016 	if (f2 == NULL) {
5017 		error = got_error_from_errno("got_opentemp");
5018 		goto done;
5019 	}
5020 
5021 	if (ncommit_args == 0 && (ids[0] == NULL || ids[1] == NULL)) {
5022 		struct print_diff_arg arg;
5023 		char *id_str;
5024 
5025 		if (worktree == NULL) {
5026 			if (argc == 2 && ids[0] == NULL) {
5027 				error = got_error_path(argv[0], GOT_ERR_NO_OBJ);
5028 				goto done;
5029 			} else if (argc == 2 && ids[1] == NULL) {
5030 				error = got_error_path(argv[1], GOT_ERR_NO_OBJ);
5031 				goto done;
5032 			} else if (argc > 0) {
5033 				error = got_error_fmt(GOT_ERR_NOT_WORKTREE,
5034 				    "%s", "specified paths cannot be resolved");
5035 				goto done;
5036 			} else {
5037 				error = got_error(GOT_ERR_NOT_WORKTREE);
5038 				goto done;
5039 			}
5040 		}
5041 
5042 		error = get_worktree_paths_from_argv(&paths, argc, argv,
5043 		    worktree);
5044 		if (error)
5045 			goto done;
5046 
5047 		error = got_object_id_str(&id_str,
5048 		    got_worktree_get_base_commit_id(worktree));
5049 		if (error)
5050 			goto done;
5051 		arg.repo = repo;
5052 		arg.worktree = worktree;
5053 		arg.diff_algo = GOT_DIFF_ALGORITHM_PATIENCE;
5054 		arg.diff_context = diff_context;
5055 		arg.id_str = id_str;
5056 		arg.header_shown = 0;
5057 		arg.diff_staged = diff_staged;
5058 		arg.ignore_whitespace = ignore_whitespace;
5059 		arg.force_text_diff = force_text_diff;
5060 		arg.f1 = f1;
5061 		arg.f2 = f2;
5062 
5063 		error = got_worktree_status(worktree, &paths, repo, 0,
5064 		    print_diff, &arg, check_cancelled, NULL);
5065 		free(id_str);
5066 		goto done;
5067 	}
5068 
5069 	if (ncommit_args == 1) {
5070 		struct got_commit_object *commit;
5071 		error = got_object_open_as_commit(&commit, repo, ids[0]);
5072 		if (error)
5073 			goto done;
5074 
5075 		labels[1] = labels[0];
5076 		ids[1] = ids[0];
5077 		if (got_object_commit_get_nparents(commit) > 0) {
5078 			const struct got_object_id_queue *pids;
5079 			struct got_object_qid *pid;
5080 			pids = got_object_commit_get_parent_ids(commit);
5081 			pid = STAILQ_FIRST(pids);
5082 			ids[0] = got_object_id_dup(&pid->id);
5083 			if (ids[0] == NULL) {
5084 				error = got_error_from_errno(
5085 				    "got_object_id_dup");
5086 				got_object_commit_close(commit);
5087 				goto done;
5088 			}
5089 			error = got_object_id_str(&labels[0], ids[0]);
5090 			if (error) {
5091 				got_object_commit_close(commit);
5092 				goto done;
5093 			}
5094 		} else {
5095 			ids[0] = NULL;
5096 			labels[0] = strdup("/dev/null");
5097 			if (labels[0] == NULL) {
5098 				error = got_error_from_errno("strdup");
5099 				got_object_commit_close(commit);
5100 				goto done;
5101 			}
5102 		}
5103 
5104 		got_object_commit_close(commit);
5105 	}
5106 
5107 	if (ncommit_args == 0 && argc > 2) {
5108 		error = got_error_msg(GOT_ERR_BAD_PATH,
5109 		    "path arguments cannot be used when diffing two objects");
5110 		goto done;
5111 	}
5112 
5113 	if (ids[0]) {
5114 		error = got_object_get_type(&type1, repo, ids[0]);
5115 		if (error)
5116 			goto done;
5117 	}
5118 
5119 	error = got_object_get_type(&type2, repo, ids[1]);
5120 	if (error)
5121 		goto done;
5122 	if (type1 != GOT_OBJ_TYPE_ANY && type1 != type2) {
5123 		error = got_error(GOT_ERR_OBJ_TYPE);
5124 		goto done;
5125 	}
5126 	if (type1 == GOT_OBJ_TYPE_BLOB && argc > 0) {
5127 		error = got_error_msg(GOT_ERR_OBJ_TYPE,
5128 		    "path arguments cannot be used when diffing blobs");
5129 		goto done;
5130 	}
5131 
5132 	for (i = 0; ncommit_args > 0 && i < argc; i++) {
5133 		char *in_repo_path;
5134 		struct got_pathlist_entry *new;
5135 		if (worktree) {
5136 			const char *prefix;
5137 			char *p;
5138 			error = got_worktree_resolve_path(&p, worktree,
5139 			    argv[i]);
5140 			if (error)
5141 				goto done;
5142 			prefix = got_worktree_get_path_prefix(worktree);
5143 			while (prefix[0] == '/')
5144 				prefix++;
5145 			if (asprintf(&in_repo_path, "%s%s%s", prefix,
5146 			    (p[0] != '\0' && prefix[0] != '\0') ? "/" : "",
5147 			    p) == -1) {
5148 				error = got_error_from_errno("asprintf");
5149 				free(p);
5150 				goto done;
5151 			}
5152 			free(p);
5153 		} else {
5154 			char *mapped_path, *s;
5155 			error = got_repo_map_path(&mapped_path, repo, argv[i]);
5156 			if (error)
5157 				goto done;
5158 			s = mapped_path;
5159 			while (s[0] == '/')
5160 				s++;
5161 			in_repo_path = strdup(s);
5162 			if (in_repo_path == NULL) {
5163 				error = got_error_from_errno("asprintf");
5164 				free(mapped_path);
5165 				goto done;
5166 			}
5167 			free(mapped_path);
5168 
5169 		}
5170 		error = got_pathlist_insert(&new, &paths, in_repo_path, NULL);
5171 		if (error || new == NULL /* duplicate */)
5172 			free(in_repo_path);
5173 		if (error)
5174 			goto done;
5175 	}
5176 
5177 	if (worktree) {
5178 		/* Release work tree lock. */
5179 		got_worktree_close(worktree);
5180 		worktree = NULL;
5181 	}
5182 
5183 	fd1 = got_opentempfd();
5184 	if (fd1 == -1) {
5185 		error = got_error_from_errno("got_opentempfd");
5186 		goto done;
5187 	}
5188 
5189 	fd2 = got_opentempfd();
5190 	if (fd2 == -1) {
5191 		error = got_error_from_errno("got_opentempfd");
5192 		goto done;
5193 	}
5194 
5195 	switch (type1 == GOT_OBJ_TYPE_ANY ? type2 : type1) {
5196 	case GOT_OBJ_TYPE_BLOB:
5197 		error = got_diff_objects_as_blobs(NULL, NULL, f1, f2,
5198 		    fd1, fd2, ids[0], ids[1], NULL, NULL,
5199 		    GOT_DIFF_ALGORITHM_PATIENCE, diff_context,
5200 		    ignore_whitespace, force_text_diff, repo, stdout);
5201 		break;
5202 	case GOT_OBJ_TYPE_TREE:
5203 		error = got_diff_objects_as_trees(NULL, NULL, f1, f2, fd1, fd2,
5204 		    ids[0], ids[1], &paths, "", "",
5205 		    GOT_DIFF_ALGORITHM_PATIENCE, diff_context,
5206 		    ignore_whitespace, force_text_diff, repo, stdout);
5207 		break;
5208 	case GOT_OBJ_TYPE_COMMIT:
5209 		printf("diff %s %s\n", labels[0], labels[1]);
5210 		error = got_diff_objects_as_commits(NULL, NULL, f1, f2,
5211 		    fd1, fd2, ids[0], ids[1], &paths,
5212 		    GOT_DIFF_ALGORITHM_PATIENCE, diff_context,
5213 		    ignore_whitespace, force_text_diff, repo, stdout);
5214 		break;
5215 	default:
5216 		error = got_error(GOT_ERR_OBJ_TYPE);
5217 	}
5218 done:
5219 	free(labels[0]);
5220 	free(labels[1]);
5221 	free(ids[0]);
5222 	free(ids[1]);
5223 	if (worktree)
5224 		got_worktree_close(worktree);
5225 	if (repo) {
5226 		const struct got_error *close_err = got_repo_close(repo);
5227 		if (error == NULL)
5228 			error = close_err;
5229 	}
5230 	if (pack_fds) {
5231 		const struct got_error *pack_err =
5232 		    got_repo_pack_fds_close(pack_fds);
5233 		if (error == NULL)
5234 			error = pack_err;
5235 	}
5236 	TAILQ_FOREACH(pe, &paths, entry)
5237 		free((char *)pe->path);
5238 	got_pathlist_free(&paths);
5239 	got_ref_list_free(&refs);
5240 	if (f1 && fclose(f1) == EOF && error == NULL)
5241 		error = got_error_from_errno("fclose");
5242 	if (f2 && fclose(f2) == EOF && error == NULL)
5243 		error = got_error_from_errno("fclose");
5244 	if (fd1 != -1 && close(fd1) == -1 && error == NULL)
5245 		error = got_error_from_errno("close");
5246 	if (fd2 != -1 && close(fd2) == -1 && error == NULL)
5247 		error = got_error_from_errno("close");
5248 	return error;
5249 }
5250 
5251 __dead static void
5252 usage_blame(void)
5253 {
5254 	fprintf(stderr,
5255 	    "usage: %s blame [-c commit] [-r repository-path] path\n",
5256 	    getprogname());
5257 	exit(1);
5258 }
5259 
5260 struct blame_line {
5261 	int annotated;
5262 	char *id_str;
5263 	char *committer;
5264 	char datebuf[11]; /* YYYY-MM-DD + NUL */
5265 };
5266 
5267 struct blame_cb_args {
5268 	struct blame_line *lines;
5269 	int nlines;
5270 	int nlines_prec;
5271 	int lineno_cur;
5272 	off_t *line_offsets;
5273 	FILE *f;
5274 	struct got_repository *repo;
5275 };
5276 
5277 static const struct got_error *
5278 blame_cb(void *arg, int nlines, int lineno,
5279     struct got_commit_object *commit, struct got_object_id *id)
5280 {
5281 	const struct got_error *err = NULL;
5282 	struct blame_cb_args *a = arg;
5283 	struct blame_line *bline;
5284 	char *line = NULL;
5285 	size_t linesize = 0;
5286 	off_t offset;
5287 	struct tm tm;
5288 	time_t committer_time;
5289 
5290 	if (nlines != a->nlines ||
5291 	    (lineno != -1 && lineno < 1) || lineno > a->nlines)
5292 		return got_error(GOT_ERR_RANGE);
5293 
5294 	if (sigint_received)
5295 		return got_error(GOT_ERR_ITER_COMPLETED);
5296 
5297 	if (lineno == -1)
5298 		return NULL; /* no change in this commit */
5299 
5300 	/* Annotate this line. */
5301 	bline = &a->lines[lineno - 1];
5302 	if (bline->annotated)
5303 		return NULL;
5304 	err = got_object_id_str(&bline->id_str, id);
5305 	if (err)
5306 		return err;
5307 
5308 	bline->committer = strdup(got_object_commit_get_committer(commit));
5309 	if (bline->committer == NULL) {
5310 		err = got_error_from_errno("strdup");
5311 		goto done;
5312 	}
5313 
5314 	committer_time = got_object_commit_get_committer_time(commit);
5315 	if (gmtime_r(&committer_time, &tm) == NULL)
5316 		return got_error_from_errno("gmtime_r");
5317 	if (strftime(bline->datebuf, sizeof(bline->datebuf), "%G-%m-%d",
5318 	    &tm) == 0) {
5319 		err = got_error(GOT_ERR_NO_SPACE);
5320 		goto done;
5321 	}
5322 	bline->annotated = 1;
5323 
5324 	/* Print lines annotated so far. */
5325 	bline = &a->lines[a->lineno_cur - 1];
5326 	if (!bline->annotated)
5327 		goto done;
5328 
5329 	offset = a->line_offsets[a->lineno_cur - 1];
5330 	if (fseeko(a->f, offset, SEEK_SET) == -1) {
5331 		err = got_error_from_errno("fseeko");
5332 		goto done;
5333 	}
5334 
5335 	while (bline->annotated) {
5336 		char *smallerthan, *at, *nl, *committer;
5337 		size_t len;
5338 
5339 		if (getline(&line, &linesize, a->f) == -1) {
5340 			if (ferror(a->f))
5341 				err = got_error_from_errno("getline");
5342 			break;
5343 		}
5344 
5345 		committer = bline->committer;
5346 		smallerthan = strchr(committer, '<');
5347 		if (smallerthan && smallerthan[1] != '\0')
5348 			committer = smallerthan + 1;
5349 		at = strchr(committer, '@');
5350 		if (at)
5351 			*at = '\0';
5352 		len = strlen(committer);
5353 		if (len >= 9)
5354 			committer[8] = '\0';
5355 
5356 		nl = strchr(line, '\n');
5357 		if (nl)
5358 			*nl = '\0';
5359 		printf("%.*d) %.8s %s %-8s %s\n", a->nlines_prec, a->lineno_cur,
5360 		    bline->id_str, bline->datebuf, committer, line);
5361 
5362 		a->lineno_cur++;
5363 		bline = &a->lines[a->lineno_cur - 1];
5364 	}
5365 done:
5366 	free(line);
5367 	return err;
5368 }
5369 
5370 static const struct got_error *
5371 cmd_blame(int argc, char *argv[])
5372 {
5373 	const struct got_error *error;
5374 	struct got_repository *repo = NULL;
5375 	struct got_worktree *worktree = NULL;
5376 	char *path, *cwd = NULL, *repo_path = NULL, *in_repo_path = NULL;
5377 	char *link_target = NULL;
5378 	struct got_object_id *obj_id = NULL;
5379 	struct got_object_id *commit_id = NULL;
5380 	struct got_commit_object *commit = NULL;
5381 	struct got_blob_object *blob = NULL;
5382 	char *commit_id_str = NULL;
5383 	struct blame_cb_args bca;
5384 	int ch, obj_type, i, fd1 = -1, fd2 = -1, fd3 = -1;
5385 	off_t filesize;
5386 	int *pack_fds = NULL;
5387 	FILE *f1 = NULL, *f2 = NULL;
5388 
5389 	fd1 = got_opentempfd();
5390 	if (fd1 == -1)
5391 		return got_error_from_errno("got_opentempfd");
5392 
5393 	memset(&bca, 0, sizeof(bca));
5394 
5395 #ifndef PROFILE
5396 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
5397 	    NULL) == -1)
5398 		err(1, "pledge");
5399 #endif
5400 
5401 	while ((ch = getopt(argc, argv, "c:r:")) != -1) {
5402 		switch (ch) {
5403 		case 'c':
5404 			commit_id_str = optarg;
5405 			break;
5406 		case 'r':
5407 			repo_path = realpath(optarg, NULL);
5408 			if (repo_path == NULL)
5409 				return got_error_from_errno2("realpath",
5410 				    optarg);
5411 			got_path_strip_trailing_slashes(repo_path);
5412 			break;
5413 		default:
5414 			usage_blame();
5415 			/* NOTREACHED */
5416 		}
5417 	}
5418 
5419 	argc -= optind;
5420 	argv += optind;
5421 
5422 	if (argc == 1)
5423 		path = argv[0];
5424 	else
5425 		usage_blame();
5426 
5427 	cwd = getcwd(NULL, 0);
5428 	if (cwd == NULL) {
5429 		error = got_error_from_errno("getcwd");
5430 		goto done;
5431 	}
5432 
5433 	error = got_repo_pack_fds_open(&pack_fds);
5434 	if (error != NULL)
5435 		goto done;
5436 
5437 	if (repo_path == NULL) {
5438 		error = got_worktree_open(&worktree, cwd);
5439 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
5440 			goto done;
5441 		else
5442 			error = NULL;
5443 		if (worktree) {
5444 			repo_path =
5445 			    strdup(got_worktree_get_repo_path(worktree));
5446 			if (repo_path == NULL) {
5447 				error = got_error_from_errno("strdup");
5448 				if (error)
5449 					goto done;
5450 			}
5451 		} else {
5452 			repo_path = strdup(cwd);
5453 			if (repo_path == NULL) {
5454 				error = got_error_from_errno("strdup");
5455 				goto done;
5456 			}
5457 		}
5458 	}
5459 
5460 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
5461 	if (error != NULL)
5462 		goto done;
5463 
5464 	if (worktree) {
5465 		const char *prefix = got_worktree_get_path_prefix(worktree);
5466 		char *p;
5467 
5468 		error = got_worktree_resolve_path(&p, worktree, path);
5469 		if (error)
5470 			goto done;
5471 		if (asprintf(&in_repo_path, "%s%s%s", prefix,
5472 		    (p[0] != '\0' && !got_path_is_root_dir(prefix)) ? "/" : "",
5473 		    p) == -1) {
5474 			error = got_error_from_errno("asprintf");
5475 			free(p);
5476 			goto done;
5477 		}
5478 		free(p);
5479 		error = apply_unveil(got_repo_get_path(repo), 1, NULL);
5480 	} else {
5481 		error = apply_unveil(got_repo_get_path(repo), 1, NULL);
5482 		if (error)
5483 			goto done;
5484 		error = got_repo_map_path(&in_repo_path, repo, path);
5485 	}
5486 	if (error)
5487 		goto done;
5488 
5489 	if (commit_id_str == NULL) {
5490 		struct got_reference *head_ref;
5491 		error = got_ref_open(&head_ref, repo, worktree ?
5492 		    got_worktree_get_head_ref_name(worktree) : GOT_REF_HEAD, 0);
5493 		if (error != NULL)
5494 			goto done;
5495 		error = got_ref_resolve(&commit_id, repo, head_ref);
5496 		got_ref_close(head_ref);
5497 		if (error != NULL)
5498 			goto done;
5499 	} else {
5500 		struct got_reflist_head refs;
5501 		TAILQ_INIT(&refs);
5502 		error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name,
5503 		    NULL);
5504 		if (error)
5505 			goto done;
5506 		error = got_repo_match_object_id(&commit_id, NULL,
5507 		    commit_id_str, GOT_OBJ_TYPE_COMMIT, &refs, repo);
5508 		got_ref_list_free(&refs);
5509 		if (error)
5510 			goto done;
5511 	}
5512 
5513 	if (worktree) {
5514 		/* Release work tree lock. */
5515 		got_worktree_close(worktree);
5516 		worktree = NULL;
5517 	}
5518 
5519 	error = got_object_open_as_commit(&commit, repo, commit_id);
5520 	if (error)
5521 		goto done;
5522 
5523 	error = got_object_resolve_symlinks(&link_target, in_repo_path,
5524 	    commit, repo);
5525 	if (error)
5526 		goto done;
5527 
5528 	error = got_object_id_by_path(&obj_id, repo, commit,
5529 	    link_target ? link_target : in_repo_path);
5530 	if (error)
5531 		goto done;
5532 
5533 	error = got_object_get_type(&obj_type, repo, obj_id);
5534 	if (error)
5535 		goto done;
5536 
5537 	if (obj_type != GOT_OBJ_TYPE_BLOB) {
5538 		error = got_error_path(link_target ? link_target : in_repo_path,
5539 		    GOT_ERR_OBJ_TYPE);
5540 		goto done;
5541 	}
5542 
5543 	error = got_object_open_as_blob(&blob, repo, obj_id, 8192, fd1);
5544 	if (error)
5545 		goto done;
5546 	bca.f = got_opentemp();
5547 	if (bca.f == NULL) {
5548 		error = got_error_from_errno("got_opentemp");
5549 		goto done;
5550 	}
5551 	error = got_object_blob_dump_to_file(&filesize, &bca.nlines,
5552 	    &bca.line_offsets, bca.f, blob);
5553 	if (error || bca.nlines == 0)
5554 		goto done;
5555 
5556 	/* Don't include \n at EOF in the blame line count. */
5557 	if (bca.line_offsets[bca.nlines - 1] == filesize)
5558 		bca.nlines--;
5559 
5560 	bca.lines = calloc(bca.nlines, sizeof(*bca.lines));
5561 	if (bca.lines == NULL) {
5562 		error = got_error_from_errno("calloc");
5563 		goto done;
5564 	}
5565 	bca.lineno_cur = 1;
5566 	bca.nlines_prec = 0;
5567 	i = bca.nlines;
5568 	while (i > 0) {
5569 		i /= 10;
5570 		bca.nlines_prec++;
5571 	}
5572 	bca.repo = repo;
5573 
5574 	fd2 = got_opentempfd();
5575 	if (fd2 == -1) {
5576 		error = got_error_from_errno("got_opentempfd");
5577 		goto done;
5578 	}
5579 	fd3 = got_opentempfd();
5580 	if (fd3 == -1) {
5581 		error = got_error_from_errno("got_opentempfd");
5582 		goto done;
5583 	}
5584 	f1 = got_opentemp();
5585 	if (f1 == NULL) {
5586 		error = got_error_from_errno("got_opentemp");
5587 		goto done;
5588 	}
5589 	f2 = got_opentemp();
5590 	if (f2 == NULL) {
5591 		error = got_error_from_errno("got_opentemp");
5592 		goto done;
5593 	}
5594 	error = got_blame(link_target ? link_target : in_repo_path, commit_id,
5595 	    repo, GOT_DIFF_ALGORITHM_PATIENCE, blame_cb, &bca,
5596 	    check_cancelled, NULL, fd2, fd3, f1, f2);
5597 done:
5598 	free(in_repo_path);
5599 	free(link_target);
5600 	free(repo_path);
5601 	free(cwd);
5602 	free(commit_id);
5603 	free(obj_id);
5604 	if (commit)
5605 		got_object_commit_close(commit);
5606 
5607 	if (fd1 != -1 && close(fd1) == -1 && error == NULL)
5608 		error = got_error_from_errno("close");
5609 	if (fd2 != -1 && close(fd2) == -1 && error == NULL)
5610 		error = got_error_from_errno("close");
5611 	if (fd3 != -1 && close(fd3) == -1 && error == NULL)
5612 		error = got_error_from_errno("close");
5613 	if (f1 && fclose(f1) == EOF && error == NULL)
5614 		error = got_error_from_errno("fclose");
5615 	if (f2 && fclose(f2) == EOF && error == NULL)
5616 		error = got_error_from_errno("fclose");
5617 
5618 	if (blob)
5619 		got_object_blob_close(blob);
5620 	if (worktree)
5621 		got_worktree_close(worktree);
5622 	if (repo) {
5623 		const struct got_error *close_err = got_repo_close(repo);
5624 		if (error == NULL)
5625 			error = close_err;
5626 	}
5627 	if (pack_fds) {
5628 		const struct got_error *pack_err =
5629 		    got_repo_pack_fds_close(pack_fds);
5630 		if (error == NULL)
5631 			error = pack_err;
5632 	}
5633 	if (bca.lines) {
5634 		for (i = 0; i < bca.nlines; i++) {
5635 			struct blame_line *bline = &bca.lines[i];
5636 			free(bline->id_str);
5637 			free(bline->committer);
5638 		}
5639 		free(bca.lines);
5640 	}
5641 	free(bca.line_offsets);
5642 	if (bca.f && fclose(bca.f) == EOF && error == NULL)
5643 		error = got_error_from_errno("fclose");
5644 	return error;
5645 }
5646 
5647 __dead static void
5648 usage_tree(void)
5649 {
5650 	fprintf(stderr,
5651 	    "usage: %s tree [-c commit] [-r repository-path] [-iR] [path]\n",
5652 	    getprogname());
5653 	exit(1);
5654 }
5655 
5656 static const struct got_error *
5657 print_entry(struct got_tree_entry *te, const char *id, const char *path,
5658     const char *root_path, struct got_repository *repo)
5659 {
5660 	const struct got_error *err = NULL;
5661 	int is_root_path = (strcmp(path, root_path) == 0);
5662 	const char *modestr = "";
5663 	mode_t mode = got_tree_entry_get_mode(te);
5664 	char *link_target = NULL;
5665 
5666 	path += strlen(root_path);
5667 	while (path[0] == '/')
5668 		path++;
5669 
5670 	if (got_object_tree_entry_is_submodule(te))
5671 		modestr = "$";
5672 	else if (S_ISLNK(mode)) {
5673 		int i;
5674 
5675 		err = got_tree_entry_get_symlink_target(&link_target, te, repo);
5676 		if (err)
5677 			return err;
5678 		for (i = 0; i < strlen(link_target); i++) {
5679 			if (!isprint((unsigned char)link_target[i]))
5680 				link_target[i] = '?';
5681 		}
5682 
5683 		modestr = "@";
5684 	}
5685 	else if (S_ISDIR(mode))
5686 		modestr = "/";
5687 	else if (mode & S_IXUSR)
5688 		modestr = "*";
5689 
5690 	printf("%s%s%s%s%s%s%s\n", id ? id : "", path,
5691 	    is_root_path ? "" : "/", got_tree_entry_get_name(te), modestr,
5692 	    link_target ? " -> ": "", link_target ? link_target : "");
5693 
5694 	free(link_target);
5695 	return NULL;
5696 }
5697 
5698 static const struct got_error *
5699 print_tree(const char *path, struct got_commit_object *commit,
5700     int show_ids, int recurse, const char *root_path,
5701     struct got_repository *repo)
5702 {
5703 	const struct got_error *err = NULL;
5704 	struct got_object_id *tree_id = NULL;
5705 	struct got_tree_object *tree = NULL;
5706 	int nentries, i;
5707 
5708 	err = got_object_id_by_path(&tree_id, repo, commit, path);
5709 	if (err)
5710 		goto done;
5711 
5712 	err = got_object_open_as_tree(&tree, repo, tree_id);
5713 	if (err)
5714 		goto done;
5715 	nentries = got_object_tree_get_nentries(tree);
5716 	for (i = 0; i < nentries; i++) {
5717 		struct got_tree_entry *te;
5718 		char *id = NULL;
5719 
5720 		if (sigint_received || sigpipe_received)
5721 			break;
5722 
5723 		te = got_object_tree_get_entry(tree, i);
5724 		if (show_ids) {
5725 			char *id_str;
5726 			err = got_object_id_str(&id_str,
5727 			    got_tree_entry_get_id(te));
5728 			if (err)
5729 				goto done;
5730 			if (asprintf(&id, "%s ", id_str) == -1) {
5731 				err = got_error_from_errno("asprintf");
5732 				free(id_str);
5733 				goto done;
5734 			}
5735 			free(id_str);
5736 		}
5737 		err = print_entry(te, id, path, root_path, repo);
5738 		free(id);
5739 		if (err)
5740 			goto done;
5741 
5742 		if (recurse && S_ISDIR(got_tree_entry_get_mode(te))) {
5743 			char *child_path;
5744 			if (asprintf(&child_path, "%s%s%s", path,
5745 			    path[0] == '/' && path[1] == '\0' ? "" : "/",
5746 			    got_tree_entry_get_name(te)) == -1) {
5747 				err = got_error_from_errno("asprintf");
5748 				goto done;
5749 			}
5750 			err = print_tree(child_path, commit, show_ids, 1,
5751 			    root_path, repo);
5752 			free(child_path);
5753 			if (err)
5754 				goto done;
5755 		}
5756 	}
5757 done:
5758 	if (tree)
5759 		got_object_tree_close(tree);
5760 	free(tree_id);
5761 	return err;
5762 }
5763 
5764 static const struct got_error *
5765 cmd_tree(int argc, char *argv[])
5766 {
5767 	const struct got_error *error;
5768 	struct got_repository *repo = NULL;
5769 	struct got_worktree *worktree = NULL;
5770 	const char *path, *refname = NULL;
5771 	char *cwd = NULL, *repo_path = NULL, *in_repo_path = NULL;
5772 	struct got_object_id *commit_id = NULL;
5773 	struct got_commit_object *commit = NULL;
5774 	char *commit_id_str = NULL;
5775 	int show_ids = 0, recurse = 0;
5776 	int ch;
5777 	int *pack_fds = NULL;
5778 
5779 #ifndef PROFILE
5780 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
5781 	    NULL) == -1)
5782 		err(1, "pledge");
5783 #endif
5784 
5785 	while ((ch = getopt(argc, argv, "c:r:iR")) != -1) {
5786 		switch (ch) {
5787 		case 'c':
5788 			commit_id_str = optarg;
5789 			break;
5790 		case 'r':
5791 			repo_path = realpath(optarg, NULL);
5792 			if (repo_path == NULL)
5793 				return got_error_from_errno2("realpath",
5794 				    optarg);
5795 			got_path_strip_trailing_slashes(repo_path);
5796 			break;
5797 		case 'i':
5798 			show_ids = 1;
5799 			break;
5800 		case 'R':
5801 			recurse = 1;
5802 			break;
5803 		default:
5804 			usage_tree();
5805 			/* NOTREACHED */
5806 		}
5807 	}
5808 
5809 	argc -= optind;
5810 	argv += optind;
5811 
5812 	if (argc == 1)
5813 		path = argv[0];
5814 	else if (argc > 1)
5815 		usage_tree();
5816 	else
5817 		path = NULL;
5818 
5819 	cwd = getcwd(NULL, 0);
5820 	if (cwd == NULL) {
5821 		error = got_error_from_errno("getcwd");
5822 		goto done;
5823 	}
5824 
5825 	error = got_repo_pack_fds_open(&pack_fds);
5826 	if (error != NULL)
5827 		goto done;
5828 
5829 	if (repo_path == NULL) {
5830 		error = got_worktree_open(&worktree, cwd);
5831 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
5832 			goto done;
5833 		else
5834 			error = NULL;
5835 		if (worktree) {
5836 			repo_path =
5837 			    strdup(got_worktree_get_repo_path(worktree));
5838 			if (repo_path == NULL)
5839 				error = got_error_from_errno("strdup");
5840 			if (error)
5841 				goto done;
5842 		} else {
5843 			repo_path = strdup(cwd);
5844 			if (repo_path == NULL) {
5845 				error = got_error_from_errno("strdup");
5846 				goto done;
5847 			}
5848 		}
5849 	}
5850 
5851 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
5852 	if (error != NULL)
5853 		goto done;
5854 
5855 	if (worktree) {
5856 		const char *prefix = got_worktree_get_path_prefix(worktree);
5857 		char *p;
5858 
5859 		if (path == NULL)
5860 			path = "";
5861 		error = got_worktree_resolve_path(&p, worktree, path);
5862 		if (error)
5863 			goto done;
5864 		if (asprintf(&in_repo_path, "%s%s%s", prefix,
5865 		    (p[0] != '\0' && !got_path_is_root_dir(prefix)) ?  "/" : "",
5866 		    p) == -1) {
5867 			error = got_error_from_errno("asprintf");
5868 			free(p);
5869 			goto done;
5870 		}
5871 		free(p);
5872 		error = apply_unveil(got_repo_get_path(repo), 1, NULL);
5873 		if (error)
5874 			goto done;
5875 	} else {
5876 		error = apply_unveil(got_repo_get_path(repo), 1, NULL);
5877 		if (error)
5878 			goto done;
5879 		if (path == NULL)
5880 			path = "/";
5881 		error = got_repo_map_path(&in_repo_path, repo, path);
5882 		if (error != NULL)
5883 			goto done;
5884 	}
5885 
5886 	if (commit_id_str == NULL) {
5887 		struct got_reference *head_ref;
5888 		if (worktree)
5889 			refname = got_worktree_get_head_ref_name(worktree);
5890 		else
5891 			refname = GOT_REF_HEAD;
5892 		error = got_ref_open(&head_ref, repo, refname, 0);
5893 		if (error != NULL)
5894 			goto done;
5895 		error = got_ref_resolve(&commit_id, repo, head_ref);
5896 		got_ref_close(head_ref);
5897 		if (error != NULL)
5898 			goto done;
5899 	} else {
5900 		struct got_reflist_head refs;
5901 		TAILQ_INIT(&refs);
5902 		error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name,
5903 		    NULL);
5904 		if (error)
5905 			goto done;
5906 		error = got_repo_match_object_id(&commit_id, NULL,
5907 		    commit_id_str, GOT_OBJ_TYPE_COMMIT, &refs, repo);
5908 		got_ref_list_free(&refs);
5909 		if (error)
5910 			goto done;
5911 	}
5912 
5913 	if (worktree) {
5914 		/* Release work tree lock. */
5915 		got_worktree_close(worktree);
5916 		worktree = NULL;
5917 	}
5918 
5919 	error = got_object_open_as_commit(&commit, repo, commit_id);
5920 	if (error)
5921 		goto done;
5922 
5923 	error = print_tree(in_repo_path, commit, show_ids, recurse,
5924 	    in_repo_path, repo);
5925 done:
5926 	free(in_repo_path);
5927 	free(repo_path);
5928 	free(cwd);
5929 	free(commit_id);
5930 	if (commit)
5931 		got_object_commit_close(commit);
5932 	if (worktree)
5933 		got_worktree_close(worktree);
5934 	if (repo) {
5935 		const struct got_error *close_err = got_repo_close(repo);
5936 		if (error == NULL)
5937 			error = close_err;
5938 	}
5939 	if (pack_fds) {
5940 		const struct got_error *pack_err =
5941 		    got_repo_pack_fds_close(pack_fds);
5942 		if (error == NULL)
5943 			error = pack_err;
5944 	}
5945 	return error;
5946 }
5947 
5948 __dead static void
5949 usage_status(void)
5950 {
5951 	fprintf(stderr, "usage: %s status [-I] [-s status-codes ] "
5952 	    "[-S status-codes] [path ...]\n", getprogname());
5953 	exit(1);
5954 }
5955 
5956 struct got_status_arg {
5957 	char *status_codes;
5958 	int suppress;
5959 };
5960 
5961 static const struct got_error *
5962 print_status(void *arg, unsigned char status, unsigned char staged_status,
5963     const char *path, struct got_object_id *blob_id,
5964     struct got_object_id *staged_blob_id, struct got_object_id *commit_id,
5965     int dirfd, const char *de_name)
5966 {
5967 	struct got_status_arg *st = arg;
5968 
5969 	if (status == staged_status && (status == GOT_STATUS_DELETE))
5970 		status = GOT_STATUS_NO_CHANGE;
5971 	if (st != NULL && st->status_codes) {
5972 		size_t ncodes = strlen(st->status_codes);
5973 		int i, j = 0;
5974 
5975 		for (i = 0; i < ncodes ; i++) {
5976 			if (st->suppress) {
5977 				if (status == st->status_codes[i] ||
5978 				    staged_status == st->status_codes[i]) {
5979 					j++;
5980 					continue;
5981 				}
5982 			} else {
5983 				if (status == st->status_codes[i] ||
5984 				    staged_status == st->status_codes[i])
5985 					break;
5986 			}
5987 		}
5988 
5989 		if (st->suppress && j == 0)
5990 			goto print;
5991 
5992 		if (i == ncodes)
5993 			return NULL;
5994 	}
5995 print:
5996 	printf("%c%c %s\n", status, staged_status, path);
5997 	return NULL;
5998 }
5999 
6000 static const struct got_error *
6001 cmd_status(int argc, char *argv[])
6002 {
6003 	const struct got_error *error = NULL;
6004 	struct got_repository *repo = NULL;
6005 	struct got_worktree *worktree = NULL;
6006 	struct got_status_arg st;
6007 	char *cwd = NULL;
6008 	struct got_pathlist_head paths;
6009 	struct got_pathlist_entry *pe;
6010 	int ch, i, no_ignores = 0;
6011 	int *pack_fds = NULL;
6012 
6013 	TAILQ_INIT(&paths);
6014 
6015 	memset(&st, 0, sizeof(st));
6016 	st.status_codes = NULL;
6017 	st.suppress = 0;
6018 
6019 	while ((ch = getopt(argc, argv, "Is:S:")) != -1) {
6020 		switch (ch) {
6021 		case 'I':
6022 			no_ignores = 1;
6023 			break;
6024 		case 'S':
6025 			if (st.status_codes != NULL && st.suppress == 0)
6026 				option_conflict('S', 's');
6027 			st.suppress = 1;
6028 			/* fallthrough */
6029 		case 's':
6030 			for (i = 0; i < strlen(optarg); i++) {
6031 				switch (optarg[i]) {
6032 				case GOT_STATUS_MODIFY:
6033 				case GOT_STATUS_ADD:
6034 				case GOT_STATUS_DELETE:
6035 				case GOT_STATUS_CONFLICT:
6036 				case GOT_STATUS_MISSING:
6037 				case GOT_STATUS_OBSTRUCTED:
6038 				case GOT_STATUS_UNVERSIONED:
6039 				case GOT_STATUS_MODE_CHANGE:
6040 				case GOT_STATUS_NONEXISTENT:
6041 					break;
6042 				default:
6043 					errx(1, "invalid status code '%c'",
6044 					    optarg[i]);
6045 				}
6046 			}
6047 			if (ch == 's' && st.suppress)
6048 				option_conflict('s', 'S');
6049 			st.status_codes = optarg;
6050 			break;
6051 		default:
6052 			usage_status();
6053 			/* NOTREACHED */
6054 		}
6055 	}
6056 
6057 	argc -= optind;
6058 	argv += optind;
6059 
6060 #ifndef PROFILE
6061 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
6062 	    NULL) == -1)
6063 		err(1, "pledge");
6064 #endif
6065 	cwd = getcwd(NULL, 0);
6066 	if (cwd == NULL) {
6067 		error = got_error_from_errno("getcwd");
6068 		goto done;
6069 	}
6070 
6071 	error = got_repo_pack_fds_open(&pack_fds);
6072 	if (error != NULL)
6073 		goto done;
6074 
6075 	error = got_worktree_open(&worktree, cwd);
6076 	if (error) {
6077 		if (error->code == GOT_ERR_NOT_WORKTREE)
6078 			error = wrap_not_worktree_error(error, "status", cwd);
6079 		goto done;
6080 	}
6081 
6082 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
6083 	    NULL, pack_fds);
6084 	if (error != NULL)
6085 		goto done;
6086 
6087 	error = apply_unveil(got_repo_get_path(repo), 1,
6088 	    got_worktree_get_root_path(worktree));
6089 	if (error)
6090 		goto done;
6091 
6092 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
6093 	if (error)
6094 		goto done;
6095 
6096 	error = got_worktree_status(worktree, &paths, repo, no_ignores,
6097 	    print_status, &st, check_cancelled, NULL);
6098 done:
6099 	if (pack_fds) {
6100 		const struct got_error *pack_err =
6101 		    got_repo_pack_fds_close(pack_fds);
6102 		if (error == NULL)
6103 			error = pack_err;
6104 	}
6105 
6106 	TAILQ_FOREACH(pe, &paths, entry)
6107 		free((char *)pe->path);
6108 	got_pathlist_free(&paths);
6109 	free(cwd);
6110 	return error;
6111 }
6112 
6113 __dead static void
6114 usage_ref(void)
6115 {
6116 	fprintf(stderr,
6117 	    "usage: %s ref [-r repository] [-l] [-t] [-c object] "
6118 	        "[-s reference] [-d] [name]\n",
6119 	    getprogname());
6120 	exit(1);
6121 }
6122 
6123 static const struct got_error *
6124 list_refs(struct got_repository *repo, const char *refname, int sort_by_time)
6125 {
6126 	static const struct got_error *err = NULL;
6127 	struct got_reflist_head refs;
6128 	struct got_reflist_entry *re;
6129 
6130 	TAILQ_INIT(&refs);
6131 	err = got_ref_list(&refs, repo, refname, sort_by_time ?
6132 	    got_ref_cmp_by_commit_timestamp_descending : got_ref_cmp_by_name,
6133 	    repo);
6134 	if (err)
6135 		return err;
6136 
6137 	TAILQ_FOREACH(re, &refs, entry) {
6138 		char *refstr;
6139 		refstr = got_ref_to_str(re->ref);
6140 		if (refstr == NULL) {
6141 			err = got_error_from_errno("got_ref_to_str");
6142 			break;
6143 		}
6144 		printf("%s: %s\n", got_ref_get_name(re->ref), refstr);
6145 		free(refstr);
6146 	}
6147 
6148 	got_ref_list_free(&refs);
6149 	return err;
6150 }
6151 
6152 static const struct got_error *
6153 delete_ref_by_name(struct got_repository *repo, const char *refname)
6154 {
6155 	const struct got_error *err;
6156 	struct got_reference *ref;
6157 
6158 	err = got_ref_open(&ref, repo, refname, 0);
6159 	if (err)
6160 		return err;
6161 
6162 	err = delete_ref(repo, ref);
6163 	got_ref_close(ref);
6164 	return err;
6165 }
6166 
6167 static const struct got_error *
6168 add_ref(struct got_repository *repo, const char *refname, const char *target)
6169 {
6170 	const struct got_error *err = NULL;
6171 	struct got_object_id *id = NULL;
6172 	struct got_reference *ref = NULL;
6173 	struct got_reflist_head refs;
6174 
6175 	/*
6176 	 * Don't let the user create a reference name with a leading '-'.
6177 	 * While technically a valid reference name, this case is usually
6178 	 * an unintended typo.
6179 	 */
6180 	if (refname[0] == '-')
6181 		return got_error_path(refname, GOT_ERR_REF_NAME_MINUS);
6182 
6183 	TAILQ_INIT(&refs);
6184 	err = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name, NULL);
6185 	if (err)
6186 		goto done;
6187 	err = got_repo_match_object_id(&id, NULL, target, GOT_OBJ_TYPE_ANY,
6188 	    &refs, repo);
6189 	got_ref_list_free(&refs);
6190 	if (err)
6191 		goto done;
6192 
6193 	err = got_ref_alloc(&ref, refname, id);
6194 	if (err)
6195 		goto done;
6196 
6197 	err = got_ref_write(ref, repo);
6198 done:
6199 	if (ref)
6200 		got_ref_close(ref);
6201 	free(id);
6202 	return err;
6203 }
6204 
6205 static const struct got_error *
6206 add_symref(struct got_repository *repo, const char *refname, const char *target)
6207 {
6208 	const struct got_error *err = NULL;
6209 	struct got_reference *ref = NULL;
6210 	struct got_reference *target_ref = NULL;
6211 
6212 	/*
6213 	 * Don't let the user create a reference name with a leading '-'.
6214 	 * While technically a valid reference name, this case is usually
6215 	 * an unintended typo.
6216 	 */
6217 	if (refname[0] == '-')
6218 		return got_error_path(refname, GOT_ERR_REF_NAME_MINUS);
6219 
6220 	err = got_ref_open(&target_ref, repo, target, 0);
6221 	if (err)
6222 		return err;
6223 
6224 	err = got_ref_alloc_symref(&ref, refname, target_ref);
6225 	if (err)
6226 		goto done;
6227 
6228 	err = got_ref_write(ref, repo);
6229 done:
6230 	if (target_ref)
6231 		got_ref_close(target_ref);
6232 	if (ref)
6233 		got_ref_close(ref);
6234 	return err;
6235 }
6236 
6237 static const struct got_error *
6238 cmd_ref(int argc, char *argv[])
6239 {
6240 	const struct got_error *error = NULL;
6241 	struct got_repository *repo = NULL;
6242 	struct got_worktree *worktree = NULL;
6243 	char *cwd = NULL, *repo_path = NULL;
6244 	int ch, do_list = 0, do_delete = 0, sort_by_time = 0;
6245 	const char *obj_arg = NULL, *symref_target= NULL;
6246 	char *refname = NULL;
6247 	int *pack_fds = NULL;
6248 
6249 	while ((ch = getopt(argc, argv, "c:dr:ls:t")) != -1) {
6250 		switch (ch) {
6251 		case 'c':
6252 			obj_arg = optarg;
6253 			break;
6254 		case 'd':
6255 			do_delete = 1;
6256 			break;
6257 		case 'r':
6258 			repo_path = realpath(optarg, NULL);
6259 			if (repo_path == NULL)
6260 				return got_error_from_errno2("realpath",
6261 				    optarg);
6262 			got_path_strip_trailing_slashes(repo_path);
6263 			break;
6264 		case 'l':
6265 			do_list = 1;
6266 			break;
6267 		case 's':
6268 			symref_target = optarg;
6269 			break;
6270 		case 't':
6271 			sort_by_time = 1;
6272 			break;
6273 		default:
6274 			usage_ref();
6275 			/* NOTREACHED */
6276 		}
6277 	}
6278 
6279 	if (obj_arg && do_list)
6280 		option_conflict('c', 'l');
6281 	if (obj_arg && do_delete)
6282 		option_conflict('c', 'd');
6283 	if (obj_arg && symref_target)
6284 		option_conflict('c', 's');
6285 	if (symref_target && do_delete)
6286 		option_conflict('s', 'd');
6287 	if (symref_target && do_list)
6288 		option_conflict('s', 'l');
6289 	if (do_delete && do_list)
6290 		option_conflict('d', 'l');
6291 	if (sort_by_time && !do_list)
6292 		errx(1, "-t option requires -l option");
6293 
6294 	argc -= optind;
6295 	argv += optind;
6296 
6297 	if (do_list) {
6298 		if (argc != 0 && argc != 1)
6299 			usage_ref();
6300 		if (argc == 1) {
6301 			refname = strdup(argv[0]);
6302 			if (refname == NULL) {
6303 				error = got_error_from_errno("strdup");
6304 				goto done;
6305 			}
6306 		}
6307 	} else {
6308 		if (argc != 1)
6309 			usage_ref();
6310 		refname = strdup(argv[0]);
6311 		if (refname == NULL) {
6312 			error = got_error_from_errno("strdup");
6313 			goto done;
6314 		}
6315 	}
6316 
6317 	if (refname)
6318 		got_path_strip_trailing_slashes(refname);
6319 
6320 #ifndef PROFILE
6321 	if (pledge("stdio rpath wpath cpath fattr flock proc exec "
6322 	    "sendfd unveil", NULL) == -1)
6323 		err(1, "pledge");
6324 #endif
6325 	cwd = getcwd(NULL, 0);
6326 	if (cwd == NULL) {
6327 		error = got_error_from_errno("getcwd");
6328 		goto done;
6329 	}
6330 
6331 	error = got_repo_pack_fds_open(&pack_fds);
6332 	if (error != NULL)
6333 		goto done;
6334 
6335 	if (repo_path == NULL) {
6336 		error = got_worktree_open(&worktree, cwd);
6337 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
6338 			goto done;
6339 		else
6340 			error = NULL;
6341 		if (worktree) {
6342 			repo_path =
6343 			    strdup(got_worktree_get_repo_path(worktree));
6344 			if (repo_path == NULL)
6345 				error = got_error_from_errno("strdup");
6346 			if (error)
6347 				goto done;
6348 		} else {
6349 			repo_path = strdup(cwd);
6350 			if (repo_path == NULL) {
6351 				error = got_error_from_errno("strdup");
6352 				goto done;
6353 			}
6354 		}
6355 	}
6356 
6357 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
6358 	if (error != NULL)
6359 		goto done;
6360 
6361 #ifndef PROFILE
6362 	if (do_list) {
6363 		/* Remove "cpath" promise. */
6364 		if (pledge("stdio rpath wpath flock proc exec sendfd unveil",
6365 		    NULL) == -1)
6366 			err(1, "pledge");
6367 	}
6368 #endif
6369 
6370 	error = apply_unveil(got_repo_get_path(repo), do_list,
6371 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
6372 	if (error)
6373 		goto done;
6374 
6375 	if (do_list)
6376 		error = list_refs(repo, refname, sort_by_time);
6377 	else if (do_delete)
6378 		error = delete_ref_by_name(repo, refname);
6379 	else if (symref_target)
6380 		error = add_symref(repo, refname, symref_target);
6381 	else {
6382 		if (obj_arg == NULL)
6383 			usage_ref();
6384 		error = add_ref(repo, refname, obj_arg);
6385 	}
6386 done:
6387 	free(refname);
6388 	if (repo) {
6389 		const struct got_error *close_err = got_repo_close(repo);
6390 		if (error == NULL)
6391 			error = close_err;
6392 	}
6393 	if (worktree)
6394 		got_worktree_close(worktree);
6395 	if (pack_fds) {
6396 		const struct got_error *pack_err =
6397 		    got_repo_pack_fds_close(pack_fds);
6398 		if (error == NULL)
6399 			error = pack_err;
6400 	}
6401 	free(cwd);
6402 	free(repo_path);
6403 	return error;
6404 }
6405 
6406 __dead static void
6407 usage_branch(void)
6408 {
6409 	fprintf(stderr,
6410 	    "usage: %s branch [-c commit] [-d] [-r repository] [-l] [-t] "
6411 	        "[-n] [name]\n", getprogname());
6412 	exit(1);
6413 }
6414 
6415 static const struct got_error *
6416 list_branch(struct got_repository *repo, struct got_worktree *worktree,
6417     struct got_reference *ref)
6418 {
6419 	const struct got_error *err = NULL;
6420 	const char *refname, *marker = "  ";
6421 	char *refstr;
6422 
6423 	refname = got_ref_get_name(ref);
6424 	if (worktree && strcmp(refname,
6425 	    got_worktree_get_head_ref_name(worktree)) == 0) {
6426 		struct got_object_id *id = NULL;
6427 
6428 		err = got_ref_resolve(&id, repo, ref);
6429 		if (err)
6430 			return err;
6431 		if (got_object_id_cmp(id,
6432 		    got_worktree_get_base_commit_id(worktree)) == 0)
6433 			marker = "* ";
6434 		else
6435 			marker = "~ ";
6436 		free(id);
6437 	}
6438 
6439 	if (strncmp(refname, "refs/heads/", 11) == 0)
6440 		refname += 11;
6441 	if (strncmp(refname, "refs/got/worktree/", 18) == 0)
6442 		refname += 18;
6443 	if (strncmp(refname, "refs/remotes/", 13) == 0)
6444 		refname += 13;
6445 
6446 	refstr = got_ref_to_str(ref);
6447 	if (refstr == NULL)
6448 		return got_error_from_errno("got_ref_to_str");
6449 
6450 	printf("%s%s: %s\n", marker, refname, refstr);
6451 	free(refstr);
6452 	return NULL;
6453 }
6454 
6455 static const struct got_error *
6456 show_current_branch(struct got_repository *repo, struct got_worktree *worktree)
6457 {
6458 	const char *refname;
6459 
6460 	if (worktree == NULL)
6461 		return got_error(GOT_ERR_NOT_WORKTREE);
6462 
6463 	refname = got_worktree_get_head_ref_name(worktree);
6464 
6465 	if (strncmp(refname, "refs/heads/", 11) == 0)
6466 		refname += 11;
6467 	if (strncmp(refname, "refs/got/worktree/", 18) == 0)
6468 		refname += 18;
6469 
6470 	printf("%s\n", refname);
6471 
6472 	return NULL;
6473 }
6474 
6475 static const struct got_error *
6476 list_branches(struct got_repository *repo, struct got_worktree *worktree,
6477     int sort_by_time)
6478 {
6479 	static const struct got_error *err = NULL;
6480 	struct got_reflist_head refs;
6481 	struct got_reflist_entry *re;
6482 	struct got_reference *temp_ref = NULL;
6483 	int rebase_in_progress, histedit_in_progress;
6484 
6485 	TAILQ_INIT(&refs);
6486 
6487 	if (worktree) {
6488 		err = got_worktree_rebase_in_progress(&rebase_in_progress,
6489 		    worktree);
6490 		if (err)
6491 			return err;
6492 
6493 		err = got_worktree_histedit_in_progress(&histedit_in_progress,
6494 		    worktree);
6495 		if (err)
6496 			return err;
6497 
6498 		if (rebase_in_progress || histedit_in_progress) {
6499 			err = got_ref_open(&temp_ref, repo,
6500 			    got_worktree_get_head_ref_name(worktree), 0);
6501 			if (err)
6502 				return err;
6503 			list_branch(repo, worktree, temp_ref);
6504 			got_ref_close(temp_ref);
6505 		}
6506 	}
6507 
6508 	err = got_ref_list(&refs, repo, "refs/heads", sort_by_time ?
6509 	    got_ref_cmp_by_commit_timestamp_descending : got_ref_cmp_by_name,
6510 	    repo);
6511 	if (err)
6512 		return err;
6513 
6514 	TAILQ_FOREACH(re, &refs, entry)
6515 		list_branch(repo, worktree, re->ref);
6516 
6517 	got_ref_list_free(&refs);
6518 
6519 	err = got_ref_list(&refs, repo, "refs/remotes", sort_by_time ?
6520 	    got_ref_cmp_by_commit_timestamp_descending : got_ref_cmp_by_name,
6521 	    repo);
6522 	if (err)
6523 		return err;
6524 
6525 	TAILQ_FOREACH(re, &refs, entry)
6526 		list_branch(repo, worktree, re->ref);
6527 
6528 	got_ref_list_free(&refs);
6529 
6530 	return NULL;
6531 }
6532 
6533 static const struct got_error *
6534 delete_branch(struct got_repository *repo, struct got_worktree *worktree,
6535     const char *branch_name)
6536 {
6537 	const struct got_error *err = NULL;
6538 	struct got_reference *ref = NULL;
6539 	char *refname, *remote_refname = NULL;
6540 
6541 	if (strncmp(branch_name, "refs/", 5) == 0)
6542 		branch_name += 5;
6543 	if (strncmp(branch_name, "heads/", 6) == 0)
6544 		branch_name += 6;
6545 	else if (strncmp(branch_name, "remotes/", 8) == 0)
6546 		branch_name += 8;
6547 
6548 	if (asprintf(&refname, "refs/heads/%s", branch_name) == -1)
6549 		return got_error_from_errno("asprintf");
6550 
6551 	if (asprintf(&remote_refname, "refs/remotes/%s",
6552 	    branch_name) == -1) {
6553 		err = got_error_from_errno("asprintf");
6554 		goto done;
6555 	}
6556 
6557 	err = got_ref_open(&ref, repo, refname, 0);
6558 	if (err) {
6559 		const struct got_error *err2;
6560 		if (err->code != GOT_ERR_NOT_REF)
6561 			goto done;
6562 		/*
6563 		 * Keep 'err' intact such that if neither branch exists
6564 		 * we report "refs/heads" rather than "refs/remotes" in
6565 		 * our error message.
6566 		 */
6567 		err2 = got_ref_open(&ref, repo, remote_refname, 0);
6568 		if (err2)
6569 			goto done;
6570 		err = NULL;
6571 	}
6572 
6573 	if (worktree &&
6574 	    strcmp(got_worktree_get_head_ref_name(worktree),
6575 	    got_ref_get_name(ref)) == 0) {
6576 		err = got_error_msg(GOT_ERR_SAME_BRANCH,
6577 		    "will not delete this work tree's current branch");
6578 		goto done;
6579 	}
6580 
6581 	err = delete_ref(repo, ref);
6582 done:
6583 	if (ref)
6584 		got_ref_close(ref);
6585 	free(refname);
6586 	free(remote_refname);
6587 	return err;
6588 }
6589 
6590 static const struct got_error *
6591 add_branch(struct got_repository *repo, const char *branch_name,
6592     struct got_object_id *base_commit_id)
6593 {
6594 	const struct got_error *err = NULL;
6595 	struct got_reference *ref = NULL;
6596 	char *base_refname = NULL, *refname = NULL;
6597 
6598 	/*
6599 	 * Don't let the user create a branch name with a leading '-'.
6600 	 * While technically a valid reference name, this case is usually
6601 	 * an unintended typo.
6602 	 */
6603 	if (branch_name[0] == '-')
6604 		return got_error_path(branch_name, GOT_ERR_REF_NAME_MINUS);
6605 
6606 	if (strncmp(branch_name, "refs/heads/", 11) == 0)
6607 		branch_name += 11;
6608 
6609 	if (asprintf(&refname, "refs/heads/%s", branch_name) == -1) {
6610 		err = got_error_from_errno("asprintf");
6611 		goto done;
6612 	}
6613 
6614 	err = got_ref_open(&ref, repo, refname, 0);
6615 	if (err == NULL) {
6616 		err = got_error(GOT_ERR_BRANCH_EXISTS);
6617 		goto done;
6618 	} else if (err->code != GOT_ERR_NOT_REF)
6619 		goto done;
6620 
6621 	err = got_ref_alloc(&ref, refname, base_commit_id);
6622 	if (err)
6623 		goto done;
6624 
6625 	err = got_ref_write(ref, repo);
6626 done:
6627 	if (ref)
6628 		got_ref_close(ref);
6629 	free(base_refname);
6630 	free(refname);
6631 	return err;
6632 }
6633 
6634 static const struct got_error *
6635 cmd_branch(int argc, char *argv[])
6636 {
6637 	const struct got_error *error = NULL;
6638 	struct got_repository *repo = NULL;
6639 	struct got_worktree *worktree = NULL;
6640 	char *cwd = NULL, *repo_path = NULL;
6641 	int ch, do_list = 0, do_show = 0, do_update = 1, sort_by_time = 0;
6642 	const char *delref = NULL, *commit_id_arg = NULL;
6643 	struct got_reference *ref = NULL;
6644 	struct got_pathlist_head paths;
6645 	struct got_pathlist_entry *pe;
6646 	struct got_object_id *commit_id = NULL;
6647 	char *commit_id_str = NULL;
6648 	int *pack_fds = NULL;
6649 
6650 	TAILQ_INIT(&paths);
6651 
6652 	while ((ch = getopt(argc, argv, "c:d:r:lnt")) != -1) {
6653 		switch (ch) {
6654 		case 'c':
6655 			commit_id_arg = optarg;
6656 			break;
6657 		case 'd':
6658 			delref = optarg;
6659 			break;
6660 		case 'r':
6661 			repo_path = realpath(optarg, NULL);
6662 			if (repo_path == NULL)
6663 				return got_error_from_errno2("realpath",
6664 				    optarg);
6665 			got_path_strip_trailing_slashes(repo_path);
6666 			break;
6667 		case 'l':
6668 			do_list = 1;
6669 			break;
6670 		case 'n':
6671 			do_update = 0;
6672 			break;
6673 		case 't':
6674 			sort_by_time = 1;
6675 			break;
6676 		default:
6677 			usage_branch();
6678 			/* NOTREACHED */
6679 		}
6680 	}
6681 
6682 	if (do_list && delref)
6683 		option_conflict('l', 'd');
6684 	if (sort_by_time && !do_list)
6685 		errx(1, "-t option requires -l option");
6686 
6687 	argc -= optind;
6688 	argv += optind;
6689 
6690 	if (!do_list && !delref && argc == 0)
6691 		do_show = 1;
6692 
6693 	if ((do_list || delref || do_show) && commit_id_arg != NULL)
6694 		errx(1, "-c option can only be used when creating a branch");
6695 
6696 	if (do_list || delref) {
6697 		if (argc > 0)
6698 			usage_branch();
6699 	} else if (!do_show && argc != 1)
6700 		usage_branch();
6701 
6702 #ifndef PROFILE
6703 	if (pledge("stdio rpath wpath cpath fattr flock proc exec "
6704 	    "sendfd unveil", NULL) == -1)
6705 		err(1, "pledge");
6706 #endif
6707 	cwd = getcwd(NULL, 0);
6708 	if (cwd == NULL) {
6709 		error = got_error_from_errno("getcwd");
6710 		goto done;
6711 	}
6712 
6713 	error = got_repo_pack_fds_open(&pack_fds);
6714 	if (error != NULL)
6715 		goto done;
6716 
6717 	if (repo_path == NULL) {
6718 		error = got_worktree_open(&worktree, cwd);
6719 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
6720 			goto done;
6721 		else
6722 			error = NULL;
6723 		if (worktree) {
6724 			repo_path =
6725 			    strdup(got_worktree_get_repo_path(worktree));
6726 			if (repo_path == NULL)
6727 				error = got_error_from_errno("strdup");
6728 			if (error)
6729 				goto done;
6730 		} else {
6731 			repo_path = strdup(cwd);
6732 			if (repo_path == NULL) {
6733 				error = got_error_from_errno("strdup");
6734 				goto done;
6735 			}
6736 		}
6737 	}
6738 
6739 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
6740 	if (error != NULL)
6741 		goto done;
6742 
6743 #ifndef PROFILE
6744 	if (do_list || do_show) {
6745 		/* Remove "cpath" promise. */
6746 		if (pledge("stdio rpath wpath flock proc exec sendfd unveil",
6747 		    NULL) == -1)
6748 			err(1, "pledge");
6749 	}
6750 #endif
6751 
6752 	error = apply_unveil(got_repo_get_path(repo), do_list,
6753 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
6754 	if (error)
6755 		goto done;
6756 
6757 	if (do_show)
6758 		error = show_current_branch(repo, worktree);
6759 	else if (do_list)
6760 		error = list_branches(repo, worktree, sort_by_time);
6761 	else if (delref)
6762 		error = delete_branch(repo, worktree, delref);
6763 	else {
6764 		struct got_reflist_head refs;
6765 		TAILQ_INIT(&refs);
6766 		error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name,
6767 		    NULL);
6768 		if (error)
6769 			goto done;
6770 		if (commit_id_arg == NULL)
6771 			commit_id_arg = worktree ?
6772 			    got_worktree_get_head_ref_name(worktree) :
6773 			    GOT_REF_HEAD;
6774 		error = got_repo_match_object_id(&commit_id, NULL,
6775 		    commit_id_arg, GOT_OBJ_TYPE_COMMIT, &refs, repo);
6776 		got_ref_list_free(&refs);
6777 		if (error)
6778 			goto done;
6779 		error = add_branch(repo, argv[0], commit_id);
6780 		if (error)
6781 			goto done;
6782 		if (worktree && do_update) {
6783 			struct got_update_progress_arg upa;
6784 			char *branch_refname = NULL;
6785 
6786 			error = got_object_id_str(&commit_id_str, commit_id);
6787 			if (error)
6788 				goto done;
6789 			error = get_worktree_paths_from_argv(&paths, 0, NULL,
6790 			    worktree);
6791 			if (error)
6792 				goto done;
6793 			if (asprintf(&branch_refname, "refs/heads/%s", argv[0])
6794 			    == -1) {
6795 				error = got_error_from_errno("asprintf");
6796 				goto done;
6797 			}
6798 			error = got_ref_open(&ref, repo, branch_refname, 0);
6799 			free(branch_refname);
6800 			if (error)
6801 				goto done;
6802 			error = switch_head_ref(ref, commit_id, worktree,
6803 			    repo);
6804 			if (error)
6805 				goto done;
6806 			error = got_worktree_set_base_commit_id(worktree, repo,
6807 			    commit_id);
6808 			if (error)
6809 				goto done;
6810 			memset(&upa, 0, sizeof(upa));
6811 			error = got_worktree_checkout_files(worktree, &paths,
6812 			    repo, update_progress, &upa, check_cancelled,
6813 			    NULL);
6814 			if (error)
6815 				goto done;
6816 			if (upa.did_something) {
6817 				printf("Updated to %s: %s\n",
6818 				    got_worktree_get_head_ref_name(worktree),
6819 				    commit_id_str);
6820 			}
6821 			print_update_progress_stats(&upa);
6822 		}
6823 	}
6824 done:
6825 	if (ref)
6826 		got_ref_close(ref);
6827 	if (repo) {
6828 		const struct got_error *close_err = got_repo_close(repo);
6829 		if (error == NULL)
6830 			error = close_err;
6831 	}
6832 	if (worktree)
6833 		got_worktree_close(worktree);
6834 	if (pack_fds) {
6835 		const struct got_error *pack_err =
6836 		    got_repo_pack_fds_close(pack_fds);
6837 		if (error == NULL)
6838 			error = pack_err;
6839 	}
6840 	free(cwd);
6841 	free(repo_path);
6842 	free(commit_id);
6843 	free(commit_id_str);
6844 	TAILQ_FOREACH(pe, &paths, entry)
6845 		free((char *)pe->path);
6846 	got_pathlist_free(&paths);
6847 	return error;
6848 }
6849 
6850 
6851 __dead static void
6852 usage_tag(void)
6853 {
6854 	fprintf(stderr,
6855 	    "usage: %s tag [-c commit] [-r repository] [-l] "
6856 	        "[-m message] [-s signer-id] [-V] name\n",
6857 	        getprogname());
6858 	exit(1);
6859 }
6860 
6861 #if 0
6862 static const struct got_error *
6863 sort_tags(struct got_reflist_head *sorted, struct got_reflist_head *tags)
6864 {
6865 	const struct got_error *err = NULL;
6866 	struct got_reflist_entry *re, *se, *new;
6867 	struct got_object_id *re_id, *se_id;
6868 	struct got_tag_object *re_tag, *se_tag;
6869 	time_t re_time, se_time;
6870 
6871 	STAILQ_FOREACH(re, tags, entry) {
6872 		se = STAILQ_FIRST(sorted);
6873 		if (se == NULL) {
6874 			err = got_reflist_entry_dup(&new, re);
6875 			if (err)
6876 				return err;
6877 			STAILQ_INSERT_HEAD(sorted, new, entry);
6878 			continue;
6879 		} else {
6880 			err = got_ref_resolve(&re_id, repo, re->ref);
6881 			if (err)
6882 				break;
6883 			err = got_object_open_as_tag(&re_tag, repo, re_id);
6884 			free(re_id);
6885 			if (err)
6886 				break;
6887 			re_time = got_object_tag_get_tagger_time(re_tag);
6888 			got_object_tag_close(re_tag);
6889 		}
6890 
6891 		while (se) {
6892 			err = got_ref_resolve(&se_id, repo, re->ref);
6893 			if (err)
6894 				break;
6895 			err = got_object_open_as_tag(&se_tag, repo, se_id);
6896 			free(se_id);
6897 			if (err)
6898 				break;
6899 			se_time = got_object_tag_get_tagger_time(se_tag);
6900 			got_object_tag_close(se_tag);
6901 
6902 			if (se_time > re_time) {
6903 				err = got_reflist_entry_dup(&new, re);
6904 				if (err)
6905 					return err;
6906 				STAILQ_INSERT_AFTER(sorted, se, new, entry);
6907 				break;
6908 			}
6909 			se = STAILQ_NEXT(se, entry);
6910 			continue;
6911 		}
6912 	}
6913 done:
6914 	return err;
6915 }
6916 #endif
6917 
6918 static const struct got_error *
6919 get_tag_refname(char **refname, const char *tag_name)
6920 {
6921 	const struct got_error *err;
6922 
6923 	if (strncmp("refs/tags/", tag_name, 10) == 0) {
6924 		*refname = strdup(tag_name);
6925 		if (*refname == NULL)
6926 			return got_error_from_errno("strdup");
6927 	} else if (asprintf(refname, "refs/tags/%s", tag_name) == -1) {
6928 		err = got_error_from_errno("asprintf");
6929 		*refname = NULL;
6930 		return err;
6931 	}
6932 
6933 	return NULL;
6934 }
6935 
6936 static const struct got_error *
6937 list_tags(struct got_repository *repo, const char *tag_name, int verify_tags,
6938     const char *allowed_signers, const char *revoked_signers, int verbosity)
6939 {
6940 	static const struct got_error *err = NULL;
6941 	struct got_reflist_head refs;
6942 	struct got_reflist_entry *re;
6943 	char *wanted_refname = NULL;
6944 	int bad_sigs = 0;
6945 
6946 	TAILQ_INIT(&refs);
6947 
6948 	err = got_ref_list(&refs, repo, "refs/tags", got_ref_cmp_tags, repo);
6949 	if (err)
6950 		return err;
6951 
6952 	if (tag_name) {
6953 		struct got_reference *ref;
6954 		err = get_tag_refname(&wanted_refname, tag_name);
6955 		if (err)
6956 			goto done;
6957 		/* Wanted tag reference should exist. */
6958 		err = got_ref_open(&ref, repo, wanted_refname, 0);
6959 		if (err)
6960 			goto done;
6961 		got_ref_close(ref);
6962 	}
6963 
6964 	TAILQ_FOREACH(re, &refs, entry) {
6965 		const char *refname;
6966 		char *refstr, *tagmsg0, *tagmsg, *line, *id_str, *datestr;
6967 		char datebuf[26];
6968 		const char *tagger, *ssh_sig = NULL;
6969 		char *sig_msg = NULL;
6970 		time_t tagger_time;
6971 		struct got_object_id *id;
6972 		struct got_tag_object *tag;
6973 		struct got_commit_object *commit = NULL;
6974 
6975 		refname = got_ref_get_name(re->ref);
6976 		if (strncmp(refname, "refs/tags/", 10) != 0 ||
6977 		    (wanted_refname && strcmp(refname, wanted_refname) != 0))
6978 			continue;
6979 		refname += 10;
6980 		refstr = got_ref_to_str(re->ref);
6981 		if (refstr == NULL) {
6982 			err = got_error_from_errno("got_ref_to_str");
6983 			break;
6984 		}
6985 
6986 		err = got_ref_resolve(&id, repo, re->ref);
6987 		if (err)
6988 			break;
6989 		err = got_object_open_as_tag(&tag, repo, id);
6990 		if (err) {
6991 			if (err->code != GOT_ERR_OBJ_TYPE) {
6992 				free(id);
6993 				break;
6994 			}
6995 			/* "lightweight" tag */
6996 			err = got_object_open_as_commit(&commit, repo, id);
6997 			if (err) {
6998 				free(id);
6999 				break;
7000 			}
7001 			tagger = got_object_commit_get_committer(commit);
7002 			tagger_time =
7003 			    got_object_commit_get_committer_time(commit);
7004 			err = got_object_id_str(&id_str, id);
7005 			free(id);
7006 			if (err)
7007 				break;
7008 		} else {
7009 			free(id);
7010 			tagger = got_object_tag_get_tagger(tag);
7011 			tagger_time = got_object_tag_get_tagger_time(tag);
7012 			err = got_object_id_str(&id_str,
7013 			    got_object_tag_get_object_id(tag));
7014 			if (err)
7015 				break;
7016 		}
7017 
7018 		if (verify_tags) {
7019 			ssh_sig = got_sigs_get_tagmsg_ssh_signature(
7020 			    got_object_tag_get_message(tag));
7021 			if (ssh_sig && allowed_signers == NULL) {
7022 				err = got_error_msg(
7023 				    GOT_ERR_VERIFY_TAG_SIGNATURE,
7024 				    "SSH signature verification requires "
7025 				        "setting allowed_signers in "
7026 				        "got.conf(5)");
7027 				break;
7028 			}
7029 		}
7030 
7031 		printf("%stag %s %s\n", GOT_COMMIT_SEP_STR, refname, refstr);
7032 		free(refstr);
7033 		printf("from: %s\n", tagger);
7034 		datestr = get_datestr(&tagger_time, datebuf);
7035 		if (datestr)
7036 			printf("date: %s UTC\n", datestr);
7037 		if (commit)
7038 			printf("object: %s %s\n", GOT_OBJ_LABEL_COMMIT, id_str);
7039 		else {
7040 			switch (got_object_tag_get_object_type(tag)) {
7041 			case GOT_OBJ_TYPE_BLOB:
7042 				printf("object: %s %s\n", GOT_OBJ_LABEL_BLOB,
7043 				    id_str);
7044 				break;
7045 			case GOT_OBJ_TYPE_TREE:
7046 				printf("object: %s %s\n", GOT_OBJ_LABEL_TREE,
7047 				    id_str);
7048 				break;
7049 			case GOT_OBJ_TYPE_COMMIT:
7050 				printf("object: %s %s\n", GOT_OBJ_LABEL_COMMIT,
7051 				    id_str);
7052 				break;
7053 			case GOT_OBJ_TYPE_TAG:
7054 				printf("object: %s %s\n", GOT_OBJ_LABEL_TAG,
7055 				    id_str);
7056 				break;
7057 			default:
7058 				break;
7059 			}
7060 		}
7061 		free(id_str);
7062 
7063 		if (ssh_sig) {
7064 			err = got_sigs_verify_tag_ssh(&sig_msg, tag, ssh_sig,
7065 				allowed_signers, revoked_signers, verbosity);
7066 			if (err && err->code == GOT_ERR_BAD_TAG_SIGNATURE)
7067 				bad_sigs = 1;
7068 			else if (err)
7069 				break;
7070 			printf("signature: %s", sig_msg);
7071 			free(sig_msg);
7072 			sig_msg = NULL;
7073 		}
7074 
7075 		if (commit) {
7076 			err = got_object_commit_get_logmsg(&tagmsg0, commit);
7077 			if (err)
7078 				break;
7079 			got_object_commit_close(commit);
7080 		} else {
7081 			tagmsg0 = strdup(got_object_tag_get_message(tag));
7082 			got_object_tag_close(tag);
7083 			if (tagmsg0 == NULL) {
7084 				err = got_error_from_errno("strdup");
7085 				break;
7086 			}
7087 		}
7088 
7089 		tagmsg = tagmsg0;
7090 		do {
7091 			line = strsep(&tagmsg, "\n");
7092 			if (line)
7093 				printf(" %s\n", line);
7094 		} while (line);
7095 		free(tagmsg0);
7096 	}
7097 done:
7098 	got_ref_list_free(&refs);
7099 	free(wanted_refname);
7100 
7101 	if (err == NULL && bad_sigs)
7102 		err = got_error(GOT_ERR_BAD_TAG_SIGNATURE);
7103 	return err;
7104 }
7105 
7106 static const struct got_error *
7107 get_tag_message(char **tagmsg, char **tagmsg_path, const char *commit_id_str,
7108     const char *tag_name, const char *repo_path)
7109 {
7110 	const struct got_error *err = NULL;
7111 	char *template = NULL, *initial_content = NULL;
7112 	char *editor = NULL;
7113 	int initial_content_len;
7114 	int fd = -1;
7115 
7116 	if (asprintf(&template, GOT_TMPDIR_STR "/got-tagmsg") == -1) {
7117 		err = got_error_from_errno("asprintf");
7118 		goto done;
7119 	}
7120 
7121 	initial_content_len = asprintf(&initial_content,
7122 	    "\n# tagging commit %s as %s\n",
7123 	    commit_id_str, tag_name);
7124 	if (initial_content_len == -1) {
7125 		err = got_error_from_errno("asprintf");
7126 		goto done;
7127 	}
7128 
7129 	err = got_opentemp_named_fd(tagmsg_path, &fd, template);
7130 	if (err)
7131 		goto done;
7132 
7133 	if (write(fd, initial_content, initial_content_len) == -1) {
7134 		err = got_error_from_errno2("write", *tagmsg_path);
7135 		goto done;
7136 	}
7137 
7138 	err = get_editor(&editor);
7139 	if (err)
7140 		goto done;
7141 	err = edit_logmsg(tagmsg, editor, *tagmsg_path, initial_content,
7142 	    initial_content_len, 1);
7143 done:
7144 	free(initial_content);
7145 	free(template);
7146 	free(editor);
7147 
7148 	if (fd != -1 && close(fd) == -1 && err == NULL)
7149 		err = got_error_from_errno2("close", *tagmsg_path);
7150 
7151 	if (err) {
7152 		free(*tagmsg);
7153 		*tagmsg = NULL;
7154 	}
7155 	return err;
7156 }
7157 
7158 static const struct got_error *
7159 add_tag(struct got_repository *repo, const char *tagger,
7160     const char *tag_name, const char *commit_arg, const char *tagmsg_arg,
7161     const char *signer_id, int verbosity)
7162 {
7163 	const struct got_error *err = NULL;
7164 	struct got_object_id *commit_id = NULL, *tag_id = NULL;
7165 	char *label = NULL, *commit_id_str = NULL;
7166 	struct got_reference *ref = NULL;
7167 	char *refname = NULL, *tagmsg = NULL;
7168 	char *tagmsg_path = NULL, *tag_id_str = NULL;
7169 	int preserve_tagmsg = 0;
7170 	struct got_reflist_head refs;
7171 
7172 	TAILQ_INIT(&refs);
7173 
7174 	/*
7175 	 * Don't let the user create a tag name with a leading '-'.
7176 	 * While technically a valid reference name, this case is usually
7177 	 * an unintended typo.
7178 	 */
7179 	if (tag_name[0] == '-')
7180 		return got_error_path(tag_name, GOT_ERR_REF_NAME_MINUS);
7181 
7182 	err = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name, NULL);
7183 	if (err)
7184 		goto done;
7185 
7186 	err = got_repo_match_object_id(&commit_id, &label, commit_arg,
7187 	    GOT_OBJ_TYPE_COMMIT, &refs, repo);
7188 	if (err)
7189 		goto done;
7190 
7191 	err = got_object_id_str(&commit_id_str, commit_id);
7192 	if (err)
7193 		goto done;
7194 
7195 	err = get_tag_refname(&refname, tag_name);
7196 	if (err)
7197 		goto done;
7198 	if (strncmp("refs/tags/", tag_name, 10) == 0)
7199 		tag_name += 10;
7200 
7201 	err = got_ref_open(&ref, repo, refname, 0);
7202 	if (err == NULL) {
7203 		err = got_error(GOT_ERR_TAG_EXISTS);
7204 		goto done;
7205 	} else if (err->code != GOT_ERR_NOT_REF)
7206 		goto done;
7207 
7208 	if (tagmsg_arg == NULL) {
7209 		err = get_tag_message(&tagmsg, &tagmsg_path, commit_id_str,
7210 		    tag_name, got_repo_get_path(repo));
7211 		if (err) {
7212 			if (err->code != GOT_ERR_COMMIT_MSG_EMPTY &&
7213 			    tagmsg_path != NULL)
7214 				preserve_tagmsg = 1;
7215 			goto done;
7216 		}
7217 		/* Editor is done; we can now apply unveil(2) */
7218 		err = got_sigs_apply_unveil();
7219 		if (err)
7220 			goto done;
7221 		err = apply_unveil(got_repo_get_path(repo), 0, NULL);
7222 		if (err)
7223 			goto done;
7224 	}
7225 
7226 	err = got_object_tag_create(&tag_id, tag_name, commit_id,
7227 	    tagger, time(NULL), tagmsg ? tagmsg : tagmsg_arg, signer_id, repo,
7228 	    verbosity);
7229 	if (err) {
7230 		if (tagmsg_path)
7231 			preserve_tagmsg = 1;
7232 		goto done;
7233 	}
7234 
7235 	err = got_ref_alloc(&ref, refname, tag_id);
7236 	if (err) {
7237 		if (tagmsg_path)
7238 			preserve_tagmsg = 1;
7239 		goto done;
7240 	}
7241 
7242 	err = got_ref_write(ref, repo);
7243 	if (err) {
7244 		if (tagmsg_path)
7245 			preserve_tagmsg = 1;
7246 		goto done;
7247 	}
7248 
7249 	err = got_object_id_str(&tag_id_str, tag_id);
7250 	if (err) {
7251 		if (tagmsg_path)
7252 			preserve_tagmsg = 1;
7253 		goto done;
7254 	}
7255 	printf("Created tag %s\n", tag_id_str);
7256 done:
7257 	if (preserve_tagmsg) {
7258 		fprintf(stderr, "%s: tag message preserved in %s\n",
7259 		    getprogname(), tagmsg_path);
7260 	} else if (tagmsg_path && unlink(tagmsg_path) == -1 && err == NULL)
7261 		err = got_error_from_errno2("unlink", tagmsg_path);
7262 	free(tag_id_str);
7263 	if (ref)
7264 		got_ref_close(ref);
7265 	free(commit_id);
7266 	free(commit_id_str);
7267 	free(refname);
7268 	free(tagmsg);
7269 	free(tagmsg_path);
7270 	got_ref_list_free(&refs);
7271 	return err;
7272 }
7273 
7274 static const struct got_error *
7275 cmd_tag(int argc, char *argv[])
7276 {
7277 	const struct got_error *error = NULL;
7278 	struct got_repository *repo = NULL;
7279 	struct got_worktree *worktree = NULL;
7280 	char *cwd = NULL, *repo_path = NULL, *commit_id_str = NULL;
7281 	char *gitconfig_path = NULL, *tagger = NULL;
7282 	char *allowed_signers = NULL, *revoked_signers = NULL;
7283 	const char *tag_name = NULL, *commit_id_arg = NULL, *tagmsg = NULL;
7284 	int ch, do_list = 0, verify_tags = 0, verbosity = 0;
7285 	const char *signer_id = NULL;
7286 	int *pack_fds = NULL;
7287 
7288 	while ((ch = getopt(argc, argv, "c:m:r:ls:Vv")) != -1) {
7289 		switch (ch) {
7290 		case 'c':
7291 			commit_id_arg = optarg;
7292 			break;
7293 		case 'm':
7294 			tagmsg = optarg;
7295 			break;
7296 		case 'r':
7297 			repo_path = realpath(optarg, NULL);
7298 			if (repo_path == NULL)
7299 				return got_error_from_errno2("realpath",
7300 				    optarg);
7301 			got_path_strip_trailing_slashes(repo_path);
7302 			break;
7303 		case 'l':
7304 			do_list = 1;
7305 			break;
7306 		case 's':
7307 			signer_id = optarg;
7308 			break;
7309 		case 'V':
7310 			verify_tags = 1;
7311 			break;
7312 		case 'v':
7313 			if (verbosity < 0)
7314 				verbosity = 0;
7315 			else if (verbosity < 3)
7316 				verbosity++;
7317 			break;
7318 		default:
7319 			usage_tag();
7320 			/* NOTREACHED */
7321 		}
7322 	}
7323 
7324 	argc -= optind;
7325 	argv += optind;
7326 
7327 	if (do_list || verify_tags) {
7328 		if (commit_id_arg != NULL)
7329 			errx(1,
7330 			    "-c option can only be used when creating a tag");
7331 		if (tagmsg)
7332 			option_conflict('l', 'm');
7333 		if (signer_id)
7334 			option_conflict('l', 's');
7335 		if (verify_tags)
7336 			option_conflict('l', 'V');
7337 		if (argc > 1)
7338 			usage_tag();
7339 	} else if (argc != 1)
7340 		usage_tag();
7341 
7342 	if (verify_tags) {
7343 		if (commit_id_arg != NULL)
7344 			errx(1,
7345 			    "-c option can only be used when creating a tag");
7346 		if (tagmsg)
7347 			option_conflict('V', 'm');
7348 		if (signer_id)
7349 			option_conflict('V', 's');
7350 		if (do_list)
7351 			option_conflict('V', 'l');
7352 	}
7353 
7354 	if (argc == 1)
7355 		tag_name = argv[0];
7356 
7357 #ifndef PROFILE
7358 	if (pledge("stdio rpath wpath cpath fattr flock proc exec "
7359 	    "sendfd unveil", NULL) == -1)
7360 		err(1, "pledge");
7361 #endif
7362 	cwd = getcwd(NULL, 0);
7363 	if (cwd == NULL) {
7364 		error = got_error_from_errno("getcwd");
7365 		goto done;
7366 	}
7367 
7368 	error = got_repo_pack_fds_open(&pack_fds);
7369 	if (error != NULL)
7370 		goto done;
7371 
7372 	if (repo_path == NULL) {
7373 		error = got_worktree_open(&worktree, cwd);
7374 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
7375 			goto done;
7376 		else
7377 			error = NULL;
7378 		if (worktree) {
7379 			repo_path =
7380 			    strdup(got_worktree_get_repo_path(worktree));
7381 			if (repo_path == NULL)
7382 				error = got_error_from_errno("strdup");
7383 			if (error)
7384 				goto done;
7385 		} else {
7386 			repo_path = strdup(cwd);
7387 			if (repo_path == NULL) {
7388 				error = got_error_from_errno("strdup");
7389 				goto done;
7390 			}
7391 		}
7392 	}
7393 
7394 	if (do_list || verify_tags) {
7395 		error = got_repo_open(&repo, repo_path, NULL, pack_fds);
7396 		if (error != NULL)
7397 			goto done;
7398 		error = get_allowed_signers(&allowed_signers, repo, worktree);
7399 		if (error)
7400 			goto done;
7401 		error = get_revoked_signers(&revoked_signers, repo, worktree);
7402 		if (error)
7403 			goto done;
7404 		if (worktree) {
7405 			/* Release work tree lock. */
7406 			got_worktree_close(worktree);
7407 			worktree = NULL;
7408 		}
7409 
7410 		/*
7411 		 * Remove "cpath" promise unless needed for signature tmpfile
7412 		 * creation.
7413 		 */
7414 		if (verify_tags)
7415 		 	got_sigs_apply_unveil();
7416 		else {
7417 #ifndef PROFILE
7418 			if (pledge("stdio rpath wpath flock proc exec sendfd "
7419 			    "unveil", NULL) == -1)
7420 				err(1, "pledge");
7421 #endif
7422 		}
7423 		error = apply_unveil(got_repo_get_path(repo), 1, NULL);
7424 		if (error)
7425 			goto done;
7426 		error = list_tags(repo, tag_name, verify_tags, allowed_signers,
7427 		    revoked_signers, verbosity);
7428 	} else {
7429 		error = get_gitconfig_path(&gitconfig_path);
7430 		if (error)
7431 			goto done;
7432 		error = got_repo_open(&repo, repo_path, gitconfig_path,
7433 		    pack_fds);
7434 		if (error != NULL)
7435 			goto done;
7436 
7437 		error = get_author(&tagger, repo, worktree);
7438 		if (error)
7439 			goto done;
7440 		if (worktree) {
7441 			/* Release work tree lock. */
7442 			got_worktree_close(worktree);
7443 			worktree = NULL;
7444 		}
7445 
7446 		if (tagmsg) {
7447 			if (signer_id) {
7448 				error = got_sigs_apply_unveil();
7449 				if (error)
7450 					goto done;
7451 			}
7452 			error = apply_unveil(got_repo_get_path(repo), 0, NULL);
7453 			if (error)
7454 				goto done;
7455 		}
7456 
7457 		if (commit_id_arg == NULL) {
7458 			struct got_reference *head_ref;
7459 			struct got_object_id *commit_id;
7460 			error = got_ref_open(&head_ref, repo,
7461 			    worktree ? got_worktree_get_head_ref_name(worktree)
7462 			    : GOT_REF_HEAD, 0);
7463 			if (error)
7464 				goto done;
7465 			error = got_ref_resolve(&commit_id, repo, head_ref);
7466 			got_ref_close(head_ref);
7467 			if (error)
7468 				goto done;
7469 			error = got_object_id_str(&commit_id_str, commit_id);
7470 			free(commit_id);
7471 			if (error)
7472 				goto done;
7473 		}
7474 
7475 		error = add_tag(repo, tagger, tag_name,
7476 		    commit_id_str ? commit_id_str : commit_id_arg, tagmsg,
7477 		    signer_id, verbosity);
7478 	}
7479 done:
7480 	if (repo) {
7481 		const struct got_error *close_err = got_repo_close(repo);
7482 		if (error == NULL)
7483 			error = close_err;
7484 	}
7485 	if (worktree)
7486 		got_worktree_close(worktree);
7487 	if (pack_fds) {
7488 		const struct got_error *pack_err =
7489 		    got_repo_pack_fds_close(pack_fds);
7490 		if (error == NULL)
7491 			error = pack_err;
7492 	}
7493 	free(cwd);
7494 	free(repo_path);
7495 	free(gitconfig_path);
7496 	free(commit_id_str);
7497 	free(tagger);
7498 	free(allowed_signers);
7499 	free(revoked_signers);
7500 	return error;
7501 }
7502 
7503 __dead static void
7504 usage_add(void)
7505 {
7506 	fprintf(stderr, "usage: %s add [-R] [-I] path ...\n",
7507 	    getprogname());
7508 	exit(1);
7509 }
7510 
7511 static const struct got_error *
7512 add_progress(void *arg, unsigned char status, const char *path)
7513 {
7514 	while (path[0] == '/')
7515 		path++;
7516 	printf("%c  %s\n", status, path);
7517 	return NULL;
7518 }
7519 
7520 static const struct got_error *
7521 cmd_add(int argc, char *argv[])
7522 {
7523 	const struct got_error *error = NULL;
7524 	struct got_repository *repo = NULL;
7525 	struct got_worktree *worktree = NULL;
7526 	char *cwd = NULL;
7527 	struct got_pathlist_head paths;
7528 	struct got_pathlist_entry *pe;
7529 	int ch, can_recurse = 0, no_ignores = 0;
7530 	int *pack_fds = NULL;
7531 
7532 	TAILQ_INIT(&paths);
7533 
7534 	while ((ch = getopt(argc, argv, "IR")) != -1) {
7535 		switch (ch) {
7536 		case 'I':
7537 			no_ignores = 1;
7538 			break;
7539 		case 'R':
7540 			can_recurse = 1;
7541 			break;
7542 		default:
7543 			usage_add();
7544 			/* NOTREACHED */
7545 		}
7546 	}
7547 
7548 	argc -= optind;
7549 	argv += optind;
7550 
7551 #ifndef PROFILE
7552 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
7553 	    NULL) == -1)
7554 		err(1, "pledge");
7555 #endif
7556 	if (argc < 1)
7557 		usage_add();
7558 
7559 	cwd = getcwd(NULL, 0);
7560 	if (cwd == NULL) {
7561 		error = got_error_from_errno("getcwd");
7562 		goto done;
7563 	}
7564 
7565 	error = got_repo_pack_fds_open(&pack_fds);
7566 	if (error != NULL)
7567 		goto done;
7568 
7569 	error = got_worktree_open(&worktree, cwd);
7570 	if (error) {
7571 		if (error->code == GOT_ERR_NOT_WORKTREE)
7572 			error = wrap_not_worktree_error(error, "add", cwd);
7573 		goto done;
7574 	}
7575 
7576 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
7577 	    NULL, pack_fds);
7578 	if (error != NULL)
7579 		goto done;
7580 
7581 	error = apply_unveil(got_repo_get_path(repo), 1,
7582 	    got_worktree_get_root_path(worktree));
7583 	if (error)
7584 		goto done;
7585 
7586 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
7587 	if (error)
7588 		goto done;
7589 
7590 	if (!can_recurse) {
7591 		char *ondisk_path;
7592 		struct stat sb;
7593 		TAILQ_FOREACH(pe, &paths, entry) {
7594 			if (asprintf(&ondisk_path, "%s/%s",
7595 			    got_worktree_get_root_path(worktree),
7596 			    pe->path) == -1) {
7597 				error = got_error_from_errno("asprintf");
7598 				goto done;
7599 			}
7600 			if (lstat(ondisk_path, &sb) == -1) {
7601 				if (errno == ENOENT) {
7602 					free(ondisk_path);
7603 					continue;
7604 				}
7605 				error = got_error_from_errno2("lstat",
7606 				    ondisk_path);
7607 				free(ondisk_path);
7608 				goto done;
7609 			}
7610 			free(ondisk_path);
7611 			if (S_ISDIR(sb.st_mode)) {
7612 				error = got_error_msg(GOT_ERR_BAD_PATH,
7613 				    "adding directories requires -R option");
7614 				goto done;
7615 			}
7616 		}
7617 	}
7618 
7619 	error = got_worktree_schedule_add(worktree, &paths, add_progress,
7620 	    NULL, repo, no_ignores);
7621 done:
7622 	if (repo) {
7623 		const struct got_error *close_err = got_repo_close(repo);
7624 		if (error == NULL)
7625 			error = close_err;
7626 	}
7627 	if (worktree)
7628 		got_worktree_close(worktree);
7629 	if (pack_fds) {
7630 		const struct got_error *pack_err =
7631 		    got_repo_pack_fds_close(pack_fds);
7632 		if (error == NULL)
7633 			error = pack_err;
7634 	}
7635 	TAILQ_FOREACH(pe, &paths, entry)
7636 		free((char *)pe->path);
7637 	got_pathlist_free(&paths);
7638 	free(cwd);
7639 	return error;
7640 }
7641 
7642 __dead static void
7643 usage_remove(void)
7644 {
7645 	fprintf(stderr, "usage: %s remove [-f] [-k] [-R] [-s status-codes] "
7646 	    "path ...\n", getprogname());
7647 	exit(1);
7648 }
7649 
7650 static const struct got_error *
7651 print_remove_status(void *arg, unsigned char status,
7652     unsigned char staged_status, const char *path)
7653 {
7654 	while (path[0] == '/')
7655 		path++;
7656 	if (status == GOT_STATUS_NONEXISTENT)
7657 		return NULL;
7658 	if (status == staged_status && (status == GOT_STATUS_DELETE))
7659 		status = GOT_STATUS_NO_CHANGE;
7660 	printf("%c%c %s\n", status, staged_status, path);
7661 	return NULL;
7662 }
7663 
7664 static const struct got_error *
7665 cmd_remove(int argc, char *argv[])
7666 {
7667 	const struct got_error *error = NULL;
7668 	struct got_worktree *worktree = NULL;
7669 	struct got_repository *repo = NULL;
7670 	const char *status_codes = NULL;
7671 	char *cwd = NULL;
7672 	struct got_pathlist_head paths;
7673 	struct got_pathlist_entry *pe;
7674 	int ch, delete_local_mods = 0, can_recurse = 0, keep_on_disk = 0, i;
7675 	int ignore_missing_paths = 0;
7676 	int *pack_fds = NULL;
7677 
7678 	TAILQ_INIT(&paths);
7679 
7680 	while ((ch = getopt(argc, argv, "fkRs:")) != -1) {
7681 		switch (ch) {
7682 		case 'f':
7683 			delete_local_mods = 1;
7684 			ignore_missing_paths = 1;
7685 			break;
7686 		case 'k':
7687 			keep_on_disk = 1;
7688 			break;
7689 		case 'R':
7690 			can_recurse = 1;
7691 			break;
7692 		case 's':
7693 			for (i = 0; i < strlen(optarg); i++) {
7694 				switch (optarg[i]) {
7695 				case GOT_STATUS_MODIFY:
7696 					delete_local_mods = 1;
7697 					break;
7698 				case GOT_STATUS_MISSING:
7699 					ignore_missing_paths = 1;
7700 					break;
7701 				default:
7702 					errx(1, "invalid status code '%c'",
7703 					    optarg[i]);
7704 				}
7705 			}
7706 			status_codes = optarg;
7707 			break;
7708 		default:
7709 			usage_remove();
7710 			/* NOTREACHED */
7711 		}
7712 	}
7713 
7714 	argc -= optind;
7715 	argv += optind;
7716 
7717 #ifndef PROFILE
7718 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
7719 	    NULL) == -1)
7720 		err(1, "pledge");
7721 #endif
7722 	if (argc < 1)
7723 		usage_remove();
7724 
7725 	cwd = getcwd(NULL, 0);
7726 	if (cwd == NULL) {
7727 		error = got_error_from_errno("getcwd");
7728 		goto done;
7729 	}
7730 
7731 	error = got_repo_pack_fds_open(&pack_fds);
7732 	if (error != NULL)
7733 		goto done;
7734 
7735 	error = got_worktree_open(&worktree, cwd);
7736 	if (error) {
7737 		if (error->code == GOT_ERR_NOT_WORKTREE)
7738 			error = wrap_not_worktree_error(error, "remove", cwd);
7739 		goto done;
7740 	}
7741 
7742 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
7743 	    NULL, pack_fds);
7744 	if (error)
7745 		goto done;
7746 
7747 	error = apply_unveil(got_repo_get_path(repo), 1,
7748 	    got_worktree_get_root_path(worktree));
7749 	if (error)
7750 		goto done;
7751 
7752 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
7753 	if (error)
7754 		goto done;
7755 
7756 	if (!can_recurse) {
7757 		char *ondisk_path;
7758 		struct stat sb;
7759 		TAILQ_FOREACH(pe, &paths, entry) {
7760 			if (asprintf(&ondisk_path, "%s/%s",
7761 			    got_worktree_get_root_path(worktree),
7762 			    pe->path) == -1) {
7763 				error = got_error_from_errno("asprintf");
7764 				goto done;
7765 			}
7766 			if (lstat(ondisk_path, &sb) == -1) {
7767 				if (errno == ENOENT) {
7768 					free(ondisk_path);
7769 					continue;
7770 				}
7771 				error = got_error_from_errno2("lstat",
7772 				    ondisk_path);
7773 				free(ondisk_path);
7774 				goto done;
7775 			}
7776 			free(ondisk_path);
7777 			if (S_ISDIR(sb.st_mode)) {
7778 				error = got_error_msg(GOT_ERR_BAD_PATH,
7779 				    "removing directories requires -R option");
7780 				goto done;
7781 			}
7782 		}
7783 	}
7784 
7785 	error = got_worktree_schedule_delete(worktree, &paths,
7786 	    delete_local_mods, status_codes, print_remove_status, NULL,
7787 	    repo, keep_on_disk, ignore_missing_paths);
7788 done:
7789 	if (repo) {
7790 		const struct got_error *close_err = got_repo_close(repo);
7791 		if (error == NULL)
7792 			error = close_err;
7793 	}
7794 	if (worktree)
7795 		got_worktree_close(worktree);
7796 	if (pack_fds) {
7797 		const struct got_error *pack_err =
7798 		    got_repo_pack_fds_close(pack_fds);
7799 		if (error == NULL)
7800 			error = pack_err;
7801 	}
7802 	TAILQ_FOREACH(pe, &paths, entry)
7803 		free((char *)pe->path);
7804 	got_pathlist_free(&paths);
7805 	free(cwd);
7806 	return error;
7807 }
7808 
7809 __dead static void
7810 usage_patch(void)
7811 {
7812 	fprintf(stderr, "usage: %s patch [-n] [-p strip-count] "
7813 	    "[-R] [patchfile]\n", getprogname());
7814 	exit(1);
7815 }
7816 
7817 static const struct got_error *
7818 patch_from_stdin(int *patchfd)
7819 {
7820 	const struct got_error *err = NULL;
7821 	ssize_t r;
7822 	char *path, buf[BUFSIZ];
7823 	sig_t sighup, sigint, sigquit;
7824 
7825 	err = got_opentemp_named_fd(&path, patchfd,
7826 	    GOT_TMPDIR_STR "/got-patch");
7827 	if (err)
7828 		return err;
7829 	unlink(path);
7830 	free(path);
7831 
7832 	sighup = signal(SIGHUP, SIG_DFL);
7833 	sigint = signal(SIGINT, SIG_DFL);
7834 	sigquit = signal(SIGQUIT, SIG_DFL);
7835 
7836 	for (;;) {
7837 		r = read(0, buf, sizeof(buf));
7838 		if (r == -1) {
7839 			err = got_error_from_errno("read");
7840 			break;
7841 		}
7842 		if (r == 0)
7843 			break;
7844 		if (write(*patchfd, buf, r) == -1) {
7845 			err = got_error_from_errno("write");
7846 			break;
7847 		}
7848 	}
7849 
7850 	signal(SIGHUP, sighup);
7851 	signal(SIGINT, sigint);
7852 	signal(SIGQUIT, sigquit);
7853 
7854 	if (err == NULL && lseek(*patchfd, 0, SEEK_SET) == -1)
7855 		err = got_error_from_errno("lseek");
7856 
7857 	if (err != NULL) {
7858 		close(*patchfd);
7859 		*patchfd = -1;
7860 	}
7861 
7862 	return err;
7863 }
7864 
7865 static const struct got_error *
7866 patch_progress(void *arg, const char *old, const char *new,
7867     unsigned char status, const struct got_error *error, int old_from,
7868     int old_lines, int new_from, int new_lines, int offset,
7869     int ws_mangled, const struct got_error *hunk_err)
7870 {
7871 	const char *path = new == NULL ? old : new;
7872 
7873 	while (*path == '/')
7874 		path++;
7875 
7876 	if (status != 0)
7877 		printf("%c  %s\n", status, path);
7878 
7879 	if (error != NULL)
7880 		fprintf(stderr, "%s: %s\n", getprogname(), error->msg);
7881 
7882 	if (offset != 0 || hunk_err != NULL || ws_mangled) {
7883 		printf("@@ -%d,%d +%d,%d @@ ", old_from,
7884 		    old_lines, new_from, new_lines);
7885 		if (hunk_err != NULL)
7886 			printf("%s\n", hunk_err->msg);
7887 		else if (offset != 0)
7888 			printf("applied with offset %d\n", offset);
7889 		else
7890 			printf("hunk contains mangled whitespace\n");
7891 	}
7892 
7893 	return NULL;
7894 }
7895 
7896 static const struct got_error *
7897 cmd_patch(int argc, char *argv[])
7898 {
7899 	const struct got_error *error = NULL, *close_error = NULL;
7900 	struct got_worktree *worktree = NULL;
7901 	struct got_repository *repo = NULL;
7902 	const char *errstr;
7903 	char *cwd = NULL;
7904 	int ch, nop = 0, strip = -1, reverse = 0;
7905 	int patchfd;
7906 	int *pack_fds = NULL;
7907 
7908 	while ((ch = getopt(argc, argv, "np:R")) != -1) {
7909 		switch (ch) {
7910 		case 'n':
7911 			nop = 1;
7912 			break;
7913 		case 'p':
7914 			strip = strtonum(optarg, 0, INT_MAX, &errstr);
7915 			if (errstr != NULL)
7916 				errx(1, "pathname strip count is %s: %s",
7917 				     errstr, optarg);
7918 			break;
7919 		case 'R':
7920 			reverse = 1;
7921 			break;
7922 		default:
7923 			usage_patch();
7924 			/* NOTREACHED */
7925 		}
7926 	}
7927 
7928 	argc -= optind;
7929 	argv += optind;
7930 
7931 	if (argc == 0) {
7932 		error = patch_from_stdin(&patchfd);
7933 		if (error)
7934 			return error;
7935 	} else if (argc == 1) {
7936 		patchfd = open(argv[0], O_RDONLY);
7937 		if (patchfd == -1) {
7938 			error = got_error_from_errno2("open", argv[0]);
7939 			return error;
7940 		}
7941 	} else
7942 		usage_patch();
7943 
7944 	if ((cwd = getcwd(NULL, 0)) == NULL) {
7945 		error = got_error_from_errno("getcwd");
7946 		goto done;
7947 	}
7948 
7949 	error = got_repo_pack_fds_open(&pack_fds);
7950 	if (error != NULL)
7951 		goto done;
7952 
7953 	error = got_worktree_open(&worktree, cwd);
7954 	if (error != NULL)
7955 		goto done;
7956 
7957 	const char *repo_path = got_worktree_get_repo_path(worktree);
7958 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
7959 	if (error != NULL)
7960 		goto done;
7961 
7962 	error = apply_unveil(got_repo_get_path(repo), 0,
7963 	    got_worktree_get_root_path(worktree));
7964 	if (error != NULL)
7965 		goto done;
7966 
7967 #ifndef PROFILE
7968 	if (pledge("stdio rpath wpath cpath fattr proc exec sendfd flock",
7969 	    NULL) == -1)
7970 		err(1, "pledge");
7971 #endif
7972 
7973 	error = got_patch(patchfd, worktree, repo, nop, strip, reverse,
7974 	    &patch_progress, NULL, check_cancelled, NULL);
7975 
7976 done:
7977 	if (repo) {
7978 		close_error = got_repo_close(repo);
7979 		if (error == NULL)
7980 			error = close_error;
7981 	}
7982 	if (worktree != NULL) {
7983 		close_error = got_worktree_close(worktree);
7984 		if (error == NULL)
7985 			error = close_error;
7986 	}
7987 	if (pack_fds) {
7988 		const struct got_error *pack_err =
7989 		    got_repo_pack_fds_close(pack_fds);
7990 		if (error == NULL)
7991 			error = pack_err;
7992 	}
7993 	free(cwd);
7994 	return error;
7995 }
7996 
7997 __dead static void
7998 usage_revert(void)
7999 {
8000 	fprintf(stderr, "usage: %s revert [-p] [-F response-script] [-R] "
8001 	    "path ...\n", getprogname());
8002 	exit(1);
8003 }
8004 
8005 static const struct got_error *
8006 revert_progress(void *arg, unsigned char status, const char *path)
8007 {
8008 	if (status == GOT_STATUS_UNVERSIONED)
8009 		return NULL;
8010 
8011 	while (path[0] == '/')
8012 		path++;
8013 	printf("%c  %s\n", status, path);
8014 	return NULL;
8015 }
8016 
8017 struct choose_patch_arg {
8018 	FILE *patch_script_file;
8019 	const char *action;
8020 };
8021 
8022 static const struct got_error *
8023 show_change(unsigned char status, const char *path, FILE *patch_file, int n,
8024     int nchanges, const char *action)
8025 {
8026 	const struct got_error *err;
8027 	char *line = NULL;
8028 	size_t linesize = 0;
8029 	ssize_t linelen;
8030 
8031 	switch (status) {
8032 	case GOT_STATUS_ADD:
8033 		printf("A  %s\n%s this addition? [y/n] ", path, action);
8034 		break;
8035 	case GOT_STATUS_DELETE:
8036 		printf("D  %s\n%s this deletion? [y/n] ", path, action);
8037 		break;
8038 	case GOT_STATUS_MODIFY:
8039 		if (fseek(patch_file, 0L, SEEK_SET) == -1)
8040 			return got_error_from_errno("fseek");
8041 		printf(GOT_COMMIT_SEP_STR);
8042 		while ((linelen = getline(&line, &linesize, patch_file)) != -1)
8043 			printf("%s", line);
8044 		if (linelen == -1 && ferror(patch_file)) {
8045 			err = got_error_from_errno("getline");
8046 			free(line);
8047 			return err;
8048 		}
8049 		free(line);
8050 		printf(GOT_COMMIT_SEP_STR);
8051 		printf("M  %s (change %d of %d)\n%s this change? [y/n/q] ",
8052 		    path, n, nchanges, action);
8053 		break;
8054 	default:
8055 		return got_error_path(path, GOT_ERR_FILE_STATUS);
8056 	}
8057 
8058 	return NULL;
8059 }
8060 
8061 static const struct got_error *
8062 choose_patch(int *choice, void *arg, unsigned char status, const char *path,
8063     FILE *patch_file, int n, int nchanges)
8064 {
8065 	const struct got_error *err = NULL;
8066 	char *line = NULL;
8067 	size_t linesize = 0;
8068 	ssize_t linelen;
8069 	int resp = ' ';
8070 	struct choose_patch_arg *a = arg;
8071 
8072 	*choice = GOT_PATCH_CHOICE_NONE;
8073 
8074 	if (a->patch_script_file) {
8075 		char *nl;
8076 		err = show_change(status, path, patch_file, n, nchanges,
8077 		    a->action);
8078 		if (err)
8079 			return err;
8080 		linelen = getline(&line, &linesize, a->patch_script_file);
8081 		if (linelen == -1) {
8082 			if (ferror(a->patch_script_file))
8083 				return got_error_from_errno("getline");
8084 			return NULL;
8085 		}
8086 		nl = strchr(line, '\n');
8087 		if (nl)
8088 			*nl = '\0';
8089 		if (strcmp(line, "y") == 0) {
8090 			*choice = GOT_PATCH_CHOICE_YES;
8091 			printf("y\n");
8092 		} else if (strcmp(line, "n") == 0) {
8093 			*choice = GOT_PATCH_CHOICE_NO;
8094 			printf("n\n");
8095 		} else if (strcmp(line, "q") == 0 &&
8096 		    status == GOT_STATUS_MODIFY) {
8097 			*choice = GOT_PATCH_CHOICE_QUIT;
8098 			printf("q\n");
8099 		} else
8100 			printf("invalid response '%s'\n", line);
8101 		free(line);
8102 		return NULL;
8103 	}
8104 
8105 	while (resp != 'y' && resp != 'n' && resp != 'q') {
8106 		err = show_change(status, path, patch_file, n, nchanges,
8107 		    a->action);
8108 		if (err)
8109 			return err;
8110 		resp = getchar();
8111 		if (resp == '\n')
8112 			resp = getchar();
8113 		if (status == GOT_STATUS_MODIFY) {
8114 			if (resp != 'y' && resp != 'n' && resp != 'q') {
8115 				printf("invalid response '%c'\n", resp);
8116 				resp = ' ';
8117 			}
8118 		} else if (resp != 'y' && resp != 'n') {
8119 				printf("invalid response '%c'\n", resp);
8120 				resp = ' ';
8121 		}
8122 	}
8123 
8124 	if (resp == 'y')
8125 		*choice = GOT_PATCH_CHOICE_YES;
8126 	else if (resp == 'n')
8127 		*choice = GOT_PATCH_CHOICE_NO;
8128 	else if (resp == 'q' && status == GOT_STATUS_MODIFY)
8129 		*choice = GOT_PATCH_CHOICE_QUIT;
8130 
8131 	return NULL;
8132 }
8133 
8134 static const struct got_error *
8135 cmd_revert(int argc, char *argv[])
8136 {
8137 	const struct got_error *error = NULL;
8138 	struct got_worktree *worktree = NULL;
8139 	struct got_repository *repo = NULL;
8140 	char *cwd = NULL, *path = NULL;
8141 	struct got_pathlist_head paths;
8142 	struct got_pathlist_entry *pe;
8143 	int ch, can_recurse = 0, pflag = 0;
8144 	FILE *patch_script_file = NULL;
8145 	const char *patch_script_path = NULL;
8146 	struct choose_patch_arg cpa;
8147 	int *pack_fds = NULL;
8148 
8149 	TAILQ_INIT(&paths);
8150 
8151 	while ((ch = getopt(argc, argv, "pF:R")) != -1) {
8152 		switch (ch) {
8153 		case 'p':
8154 			pflag = 1;
8155 			break;
8156 		case 'F':
8157 			patch_script_path = optarg;
8158 			break;
8159 		case 'R':
8160 			can_recurse = 1;
8161 			break;
8162 		default:
8163 			usage_revert();
8164 			/* NOTREACHED */
8165 		}
8166 	}
8167 
8168 	argc -= optind;
8169 	argv += optind;
8170 
8171 #ifndef PROFILE
8172 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
8173 	    "unveil", NULL) == -1)
8174 		err(1, "pledge");
8175 #endif
8176 	if (argc < 1)
8177 		usage_revert();
8178 	if (patch_script_path && !pflag)
8179 		errx(1, "-F option can only be used together with -p option");
8180 
8181 	cwd = getcwd(NULL, 0);
8182 	if (cwd == NULL) {
8183 		error = got_error_from_errno("getcwd");
8184 		goto done;
8185 	}
8186 
8187 	error = got_repo_pack_fds_open(&pack_fds);
8188 	if (error != NULL)
8189 		goto done;
8190 
8191 	error = got_worktree_open(&worktree, cwd);
8192 	if (error) {
8193 		if (error->code == GOT_ERR_NOT_WORKTREE)
8194 			error = wrap_not_worktree_error(error, "revert", cwd);
8195 		goto done;
8196 	}
8197 
8198 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
8199 	    NULL, pack_fds);
8200 	if (error != NULL)
8201 		goto done;
8202 
8203 	if (patch_script_path) {
8204 		patch_script_file = fopen(patch_script_path, "re");
8205 		if (patch_script_file == NULL) {
8206 			error = got_error_from_errno2("fopen",
8207 			    patch_script_path);
8208 			goto done;
8209 		}
8210 	}
8211 	error = apply_unveil(got_repo_get_path(repo), 1,
8212 	    got_worktree_get_root_path(worktree));
8213 	if (error)
8214 		goto done;
8215 
8216 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
8217 	if (error)
8218 		goto done;
8219 
8220 	if (!can_recurse) {
8221 		char *ondisk_path;
8222 		struct stat sb;
8223 		TAILQ_FOREACH(pe, &paths, entry) {
8224 			if (asprintf(&ondisk_path, "%s/%s",
8225 			    got_worktree_get_root_path(worktree),
8226 			    pe->path) == -1) {
8227 				error = got_error_from_errno("asprintf");
8228 				goto done;
8229 			}
8230 			if (lstat(ondisk_path, &sb) == -1) {
8231 				if (errno == ENOENT) {
8232 					free(ondisk_path);
8233 					continue;
8234 				}
8235 				error = got_error_from_errno2("lstat",
8236 				    ondisk_path);
8237 				free(ondisk_path);
8238 				goto done;
8239 			}
8240 			free(ondisk_path);
8241 			if (S_ISDIR(sb.st_mode)) {
8242 				error = got_error_msg(GOT_ERR_BAD_PATH,
8243 				    "reverting directories requires -R option");
8244 				goto done;
8245 			}
8246 		}
8247 	}
8248 
8249 	cpa.patch_script_file = patch_script_file;
8250 	cpa.action = "revert";
8251 	error = got_worktree_revert(worktree, &paths, revert_progress, NULL,
8252 	    pflag ? choose_patch : NULL, &cpa, repo);
8253 done:
8254 	if (patch_script_file && fclose(patch_script_file) == EOF &&
8255 	    error == NULL)
8256 		error = got_error_from_errno2("fclose", patch_script_path);
8257 	if (repo) {
8258 		const struct got_error *close_err = got_repo_close(repo);
8259 		if (error == NULL)
8260 			error = close_err;
8261 	}
8262 	if (worktree)
8263 		got_worktree_close(worktree);
8264 	if (pack_fds) {
8265 		const struct got_error *pack_err =
8266 		    got_repo_pack_fds_close(pack_fds);
8267 		if (error == NULL)
8268 			error = pack_err;
8269 	}
8270 	free(path);
8271 	free(cwd);
8272 	return error;
8273 }
8274 
8275 __dead static void
8276 usage_commit(void)
8277 {
8278 	fprintf(stderr, "usage: %s commit [-F path] [-m msg] [-N] [-S] "
8279 	    "[path ...]\n", getprogname());
8280 	exit(1);
8281 }
8282 
8283 struct collect_commit_logmsg_arg {
8284 	const char *cmdline_log;
8285 	const char *prepared_log;
8286 	int non_interactive;
8287 	const char *editor;
8288 	const char *worktree_path;
8289 	const char *branch_name;
8290 	const char *repo_path;
8291 	char *logmsg_path;
8292 
8293 };
8294 
8295 static const struct got_error *
8296 read_prepared_logmsg(char **logmsg, const char *path)
8297 {
8298 	const struct got_error *err = NULL;
8299 	FILE *f = NULL;
8300 	struct stat sb;
8301 	size_t r;
8302 
8303 	*logmsg = NULL;
8304 	memset(&sb, 0, sizeof(sb));
8305 
8306 	f = fopen(path, "re");
8307 	if (f == NULL)
8308 		return got_error_from_errno2("fopen", path);
8309 
8310 	if (fstat(fileno(f), &sb) == -1) {
8311 		err = got_error_from_errno2("fstat", path);
8312 		goto done;
8313 	}
8314 	if (sb.st_size == 0) {
8315 		err = got_error(GOT_ERR_COMMIT_MSG_EMPTY);
8316 		goto done;
8317 	}
8318 
8319 	*logmsg = malloc(sb.st_size + 1);
8320 	if (*logmsg == NULL) {
8321 		err = got_error_from_errno("malloc");
8322 		goto done;
8323 	}
8324 
8325 	r = fread(*logmsg, 1, sb.st_size, f);
8326 	if (r != sb.st_size) {
8327 		if (ferror(f))
8328 			err = got_error_from_errno2("fread", path);
8329 		else
8330 			err = got_error(GOT_ERR_IO);
8331 		goto done;
8332 	}
8333 	(*logmsg)[sb.st_size] = '\0';
8334 done:
8335 	if (fclose(f) == EOF && err == NULL)
8336 		err = got_error_from_errno2("fclose", path);
8337 	if (err) {
8338 		free(*logmsg);
8339 		*logmsg = NULL;
8340 	}
8341 	return err;
8342 	
8343 }
8344 
8345 static const struct got_error *
8346 collect_commit_logmsg(struct got_pathlist_head *commitable_paths, char **logmsg,
8347     void *arg)
8348 {
8349 	char *initial_content = NULL;
8350 	struct got_pathlist_entry *pe;
8351 	const struct got_error *err = NULL;
8352 	char *template = NULL;
8353 	struct collect_commit_logmsg_arg *a = arg;
8354 	int initial_content_len;
8355 	int fd = -1;
8356 	size_t len;
8357 
8358 	/* if a message was specified on the command line, just use it */
8359 	if (a->cmdline_log != NULL && strlen(a->cmdline_log) != 0) {
8360 		len = strlen(a->cmdline_log) + 1;
8361 		*logmsg = malloc(len + 1);
8362 		if (*logmsg == NULL)
8363 			return got_error_from_errno("malloc");
8364 		strlcpy(*logmsg, a->cmdline_log, len);
8365 		return NULL;
8366 	} else if (a->prepared_log != NULL && a->non_interactive)
8367 		return read_prepared_logmsg(logmsg, a->prepared_log);
8368 
8369 	if (asprintf(&template, "%s/logmsg", a->worktree_path) == -1)
8370 		return got_error_from_errno("asprintf");
8371 
8372 	err = got_opentemp_named_fd(&a->logmsg_path, &fd, template);
8373 	if (err)
8374 		goto done;
8375 
8376 	if (a->prepared_log) {
8377 		char *msg;
8378 		err = read_prepared_logmsg(&msg, a->prepared_log);
8379 		if (err)
8380 			goto done;
8381 		if (write(fd, msg, strlen(msg)) == -1) {
8382 			err = got_error_from_errno2("write", a->logmsg_path);
8383 			free(msg);
8384 			goto done;
8385 		}
8386 		free(msg);
8387 	}
8388 
8389 	initial_content_len = asprintf(&initial_content,
8390 	    "\n# changes to be committed on branch %s:\n",
8391 	    a->branch_name);
8392 	if (initial_content_len == -1) {
8393 		err = got_error_from_errno("asprintf");
8394 		goto done;
8395 	}
8396 
8397 	if (write(fd, initial_content, initial_content_len) == -1) {
8398 		err = got_error_from_errno2("write", a->logmsg_path);
8399 		goto done;
8400 	}
8401 
8402 	TAILQ_FOREACH(pe, commitable_paths, entry) {
8403 		struct got_commitable *ct = pe->data;
8404 		dprintf(fd, "#  %c  %s\n",
8405 		    got_commitable_get_status(ct),
8406 		    got_commitable_get_path(ct));
8407 	}
8408 
8409 	err = edit_logmsg(logmsg, a->editor, a->logmsg_path, initial_content,
8410 	    initial_content_len, a->prepared_log ? 0 : 1);
8411 done:
8412 	free(initial_content);
8413 	free(template);
8414 
8415 	if (fd != -1 && close(fd) == -1 && err == NULL)
8416 		err = got_error_from_errno2("close", a->logmsg_path);
8417 
8418 	/* Editor is done; we can now apply unveil(2) */
8419 	if (err == NULL)
8420 		err = apply_unveil(a->repo_path, 0, a->worktree_path);
8421 	if (err) {
8422 		free(*logmsg);
8423 		*logmsg = NULL;
8424 	}
8425 	return err;
8426 }
8427 
8428 static const struct got_error *
8429 cmd_commit(int argc, char *argv[])
8430 {
8431 	const struct got_error *error = NULL;
8432 	struct got_worktree *worktree = NULL;
8433 	struct got_repository *repo = NULL;
8434 	char *cwd = NULL, *id_str = NULL;
8435 	struct got_object_id *id = NULL;
8436 	const char *logmsg = NULL;
8437 	char *prepared_logmsg = NULL;
8438 	struct collect_commit_logmsg_arg cl_arg;
8439 	char *gitconfig_path = NULL, *editor = NULL, *author = NULL;
8440 	int ch, rebase_in_progress, histedit_in_progress, preserve_logmsg = 0;
8441 	int allow_bad_symlinks = 0, non_interactive = 0, merge_in_progress = 0;
8442 	struct got_pathlist_head paths;
8443 	int *pack_fds = NULL;
8444 
8445 	TAILQ_INIT(&paths);
8446 	cl_arg.logmsg_path = NULL;
8447 
8448 	while ((ch = getopt(argc, argv, "F:m:NS")) != -1) {
8449 		switch (ch) {
8450 		case 'F':
8451 			if (logmsg != NULL)
8452 				option_conflict('F', 'm');
8453 			prepared_logmsg = realpath(optarg, NULL);
8454 			if (prepared_logmsg == NULL)
8455 				return got_error_from_errno2("realpath",
8456 				    optarg);
8457 			break;
8458 		case 'm':
8459 			if (prepared_logmsg)
8460 				option_conflict('m', 'F');
8461 			logmsg = optarg;
8462 			break;
8463 		case 'N':
8464 			non_interactive = 1;
8465 			break;
8466 		case 'S':
8467 			allow_bad_symlinks = 1;
8468 			break;
8469 		default:
8470 			usage_commit();
8471 			/* NOTREACHED */
8472 		}
8473 	}
8474 
8475 	argc -= optind;
8476 	argv += optind;
8477 
8478 #ifndef PROFILE
8479 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
8480 	    "unveil", NULL) == -1)
8481 		err(1, "pledge");
8482 #endif
8483 	cwd = getcwd(NULL, 0);
8484 	if (cwd == NULL) {
8485 		error = got_error_from_errno("getcwd");
8486 		goto done;
8487 	}
8488 
8489 	error = got_repo_pack_fds_open(&pack_fds);
8490 	if (error != NULL)
8491 		goto done;
8492 
8493 	error = got_worktree_open(&worktree, cwd);
8494 	if (error) {
8495 		if (error->code == GOT_ERR_NOT_WORKTREE)
8496 			error = wrap_not_worktree_error(error, "commit", cwd);
8497 		goto done;
8498 	}
8499 
8500 	error = got_worktree_rebase_in_progress(&rebase_in_progress, worktree);
8501 	if (error)
8502 		goto done;
8503 	if (rebase_in_progress) {
8504 		error = got_error(GOT_ERR_REBASING);
8505 		goto done;
8506 	}
8507 
8508 	error = got_worktree_histedit_in_progress(&histedit_in_progress,
8509 	    worktree);
8510 	if (error)
8511 		goto done;
8512 
8513 	error = get_gitconfig_path(&gitconfig_path);
8514 	if (error)
8515 		goto done;
8516 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
8517 	    gitconfig_path, pack_fds);
8518 	if (error != NULL)
8519 		goto done;
8520 
8521 	error = got_worktree_merge_in_progress(&merge_in_progress, worktree, repo);
8522 	if (error)
8523 		goto done;
8524 	if (merge_in_progress) {
8525 		error = got_error(GOT_ERR_MERGE_BUSY);
8526 		goto done;
8527 	}
8528 
8529 	error = get_author(&author, repo, worktree);
8530 	if (error)
8531 		return error;
8532 
8533 	/*
8534 	 * unveil(2) traverses exec(2); if an editor is used we have
8535 	 * to apply unveil after the log message has been written.
8536 	 */
8537 	if (logmsg == NULL || strlen(logmsg) == 0)
8538 		error = get_editor(&editor);
8539 	else
8540 		error = apply_unveil(got_repo_get_path(repo), 0,
8541 		    got_worktree_get_root_path(worktree));
8542 	if (error)
8543 		goto done;
8544 
8545 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
8546 	if (error)
8547 		goto done;
8548 
8549 	cl_arg.editor = editor;
8550 	cl_arg.cmdline_log = logmsg;
8551 	cl_arg.prepared_log = prepared_logmsg;
8552 	cl_arg.non_interactive = non_interactive;
8553 	cl_arg.worktree_path = got_worktree_get_root_path(worktree);
8554 	cl_arg.branch_name = got_worktree_get_head_ref_name(worktree);
8555 	if (!histedit_in_progress) {
8556 		if (strncmp(cl_arg.branch_name, "refs/heads/", 11) != 0) {
8557 			error = got_error(GOT_ERR_COMMIT_BRANCH);
8558 			goto done;
8559 		}
8560 		cl_arg.branch_name += 11;
8561 	}
8562 	cl_arg.repo_path = got_repo_get_path(repo);
8563 	error = got_worktree_commit(&id, worktree, &paths, author, NULL,
8564 	    allow_bad_symlinks, collect_commit_logmsg, &cl_arg,
8565 	    print_status, NULL, repo);
8566 	if (error) {
8567 		if (error->code != GOT_ERR_COMMIT_MSG_EMPTY &&
8568 		    cl_arg.logmsg_path != NULL)
8569 			preserve_logmsg = 1;
8570 		goto done;
8571 	}
8572 
8573 	error = got_object_id_str(&id_str, id);
8574 	if (error)
8575 		goto done;
8576 	printf("Created commit %s\n", id_str);
8577 done:
8578 	if (preserve_logmsg) {
8579 		fprintf(stderr, "%s: log message preserved in %s\n",
8580 		    getprogname(), cl_arg.logmsg_path);
8581 	} else if (cl_arg.logmsg_path && unlink(cl_arg.logmsg_path) == -1 &&
8582 	    error == NULL)
8583 		error = got_error_from_errno2("unlink", cl_arg.logmsg_path);
8584 	free(cl_arg.logmsg_path);
8585 	if (repo) {
8586 		const struct got_error *close_err = got_repo_close(repo);
8587 		if (error == NULL)
8588 			error = close_err;
8589 	}
8590 	if (worktree)
8591 		got_worktree_close(worktree);
8592 	if (pack_fds) {
8593 		const struct got_error *pack_err =
8594 		    got_repo_pack_fds_close(pack_fds);
8595 		if (error == NULL)
8596 			error = pack_err;
8597 	}
8598 	free(cwd);
8599 	free(id_str);
8600 	free(gitconfig_path);
8601 	free(editor);
8602 	free(author);
8603 	free(prepared_logmsg);
8604 	return error;
8605 }
8606 
8607 __dead static void
8608 usage_send(void)
8609 {
8610 	fprintf(stderr, "usage: %s send [-a] [-b branch] [-d branch] [-f] "
8611 	    "[-r repository-path] [-t tag] [-T] [-q] [-v] "
8612 	    "[remote-repository]\n", getprogname());
8613 	exit(1);
8614 }
8615 
8616 static void
8617 print_load_info(int print_colored, int print_found, int print_trees,
8618     int ncolored, int nfound, int ntrees)
8619 {
8620 	if (print_colored) {
8621 		printf("%d commit%s colored", ncolored,
8622 		    ncolored == 1 ? "" : "s");
8623 	}
8624 	if (print_found) {
8625 		printf("%s%d object%s found",
8626 		    ncolored > 0 ? "; " : "",
8627 		    nfound, nfound == 1 ? "" : "s");
8628 	}
8629 	if (print_trees) {
8630 		printf("; %d tree%s scanned", ntrees,
8631 		    ntrees == 1 ? "" : "s");
8632 	}
8633 }
8634 
8635 struct got_send_progress_arg {
8636 	char last_scaled_packsize[FMT_SCALED_STRSIZE];
8637 	int verbosity;
8638 	int last_ncolored;
8639 	int last_nfound;
8640 	int last_ntrees;
8641 	int loading_done;
8642 	int last_ncommits;
8643 	int last_nobj_total;
8644 	int last_p_deltify;
8645 	int last_p_written;
8646 	int last_p_sent;
8647 	int printed_something;
8648 	int sent_something;
8649 	struct got_pathlist_head *delete_branches;
8650 };
8651 
8652 static const struct got_error *
8653 send_progress(void *arg, int ncolored, int nfound, int ntrees,
8654     off_t packfile_size, int ncommits, int nobj_total, int nobj_deltify,
8655     int nobj_written, off_t bytes_sent, const char *refname, int success)
8656 {
8657 	struct got_send_progress_arg *a = arg;
8658 	char scaled_packsize[FMT_SCALED_STRSIZE];
8659 	char scaled_sent[FMT_SCALED_STRSIZE];
8660 	int p_deltify = 0, p_written = 0, p_sent = 0;
8661 	int print_colored = 0, print_found = 0, print_trees = 0;
8662 	int print_searching = 0, print_total = 0;
8663 	int print_deltify = 0, print_written = 0, print_sent = 0;
8664 
8665 	if (a->verbosity < 0)
8666 		return NULL;
8667 
8668 	if (refname) {
8669 		const char *status = success ? "accepted" : "rejected";
8670 
8671 		if (success) {
8672 			struct got_pathlist_entry *pe;
8673 			TAILQ_FOREACH(pe, a->delete_branches, entry) {
8674 				const char *branchname = pe->path;
8675 				if (got_path_cmp(branchname, refname,
8676 				    strlen(branchname), strlen(refname)) == 0) {
8677 					status = "deleted";
8678 					a->sent_something = 1;
8679 					break;
8680 				}
8681 			}
8682 		}
8683 
8684 		if (a->printed_something)
8685 			putchar('\n');
8686 		printf("Server has %s %s", status, refname);
8687 		a->printed_something = 1;
8688 		return NULL;
8689 	}
8690 
8691 	if (a->last_ncolored != ncolored) {
8692 		print_colored = 1;
8693 		a->last_ncolored = ncolored;
8694 	}
8695 
8696 	if (a->last_nfound != nfound) {
8697 		print_colored = 1;
8698 		print_found = 1;
8699 		a->last_nfound = nfound;
8700 	}
8701 
8702 	if (a->last_ntrees != ntrees) {
8703 		print_colored = 1;
8704 		print_found = 1;
8705 		print_trees = 1;
8706 		a->last_ntrees = ntrees;
8707 	}
8708 
8709 	if ((print_colored || print_found || print_trees) &&
8710 	    !a->loading_done) {
8711 		printf("\r");
8712 		print_load_info(print_colored, print_found, print_trees,
8713 		    ncolored, nfound, ntrees);
8714 		a->printed_something = 1;
8715 		fflush(stdout);
8716 		return NULL;
8717 	} else if (!a->loading_done) {
8718 		printf("\r");
8719 		print_load_info(1, 1, 1, ncolored, nfound, ntrees);
8720 		printf("\n");
8721 		a->loading_done = 1;
8722 	}
8723 
8724 	if (fmt_scaled(packfile_size, scaled_packsize) == -1)
8725 		return got_error_from_errno("fmt_scaled");
8726 	if (fmt_scaled(bytes_sent, scaled_sent) == -1)
8727 		return got_error_from_errno("fmt_scaled");
8728 
8729 	if (a->last_ncommits != ncommits) {
8730 		print_searching = 1;
8731 		a->last_ncommits = ncommits;
8732 	}
8733 
8734 	if (a->last_nobj_total != nobj_total) {
8735 		print_searching = 1;
8736 		print_total = 1;
8737 		a->last_nobj_total = nobj_total;
8738 	}
8739 
8740 	if (packfile_size > 0 && (a->last_scaled_packsize[0] == '\0' ||
8741 	    strcmp(scaled_packsize, a->last_scaled_packsize)) != 0) {
8742 		if (strlcpy(a->last_scaled_packsize, scaled_packsize,
8743 		    FMT_SCALED_STRSIZE) >= FMT_SCALED_STRSIZE)
8744 			return got_error(GOT_ERR_NO_SPACE);
8745 	}
8746 
8747 	if (nobj_deltify > 0 || nobj_written > 0) {
8748 		if (nobj_deltify > 0) {
8749 			p_deltify = (nobj_deltify * 100) / nobj_total;
8750 			if (p_deltify != a->last_p_deltify) {
8751 				a->last_p_deltify = p_deltify;
8752 				print_searching = 1;
8753 				print_total = 1;
8754 				print_deltify = 1;
8755 			}
8756 		}
8757 		if (nobj_written > 0) {
8758 			p_written = (nobj_written * 100) / nobj_total;
8759 			if (p_written != a->last_p_written) {
8760 				a->last_p_written = p_written;
8761 				print_searching = 1;
8762 				print_total = 1;
8763 				print_deltify = 1;
8764 				print_written = 1;
8765 			}
8766 		}
8767 	}
8768 
8769 	if (bytes_sent > 0) {
8770 		p_sent = (bytes_sent * 100) / packfile_size;
8771 		if (p_sent != a->last_p_sent) {
8772 			a->last_p_sent = p_sent;
8773 			print_searching = 1;
8774 			print_total = 1;
8775 			print_deltify = 1;
8776 			print_written = 1;
8777 			print_sent = 1;
8778 		}
8779 		a->sent_something = 1;
8780 	}
8781 
8782 	if (print_searching || print_total || print_deltify || print_written ||
8783 	    print_sent)
8784 		printf("\r");
8785 	if (print_searching)
8786 		printf("packing %d reference%s", ncommits,
8787 		    ncommits == 1 ? "" : "s");
8788 	if (print_total)
8789 		printf("; %d object%s", nobj_total,
8790 		    nobj_total == 1 ? "" : "s");
8791 	if (print_deltify)
8792 		printf("; deltify: %d%%", p_deltify);
8793 	if (print_sent)
8794 		printf("; uploading pack: %*s %d%%", FMT_SCALED_STRSIZE - 2,
8795 		    scaled_packsize, p_sent);
8796 	else if (print_written)
8797 		printf("; writing pack: %*s %d%%", FMT_SCALED_STRSIZE - 2,
8798 		    scaled_packsize, p_written);
8799 	if (print_searching || print_total || print_deltify ||
8800 	    print_written || print_sent) {
8801 		a->printed_something = 1;
8802 		fflush(stdout);
8803 	}
8804 	return NULL;
8805 }
8806 
8807 static const struct got_error *
8808 cmd_send(int argc, char *argv[])
8809 {
8810 	const struct got_error *error = NULL;
8811 	char *cwd = NULL, *repo_path = NULL;
8812 	const char *remote_name;
8813 	char *proto = NULL, *host = NULL, *port = NULL;
8814 	char *repo_name = NULL, *server_path = NULL;
8815 	const struct got_remote_repo *remotes, *remote = NULL;
8816 	int nremotes, nbranches = 0, ntags = 0, ndelete_branches = 0;
8817 	struct got_repository *repo = NULL;
8818 	struct got_worktree *worktree = NULL;
8819 	const struct got_gotconfig *repo_conf = NULL, *worktree_conf = NULL;
8820 	struct got_pathlist_head branches;
8821 	struct got_pathlist_head tags;
8822 	struct got_reflist_head all_branches;
8823 	struct got_reflist_head all_tags;
8824 	struct got_pathlist_head delete_args;
8825 	struct got_pathlist_head delete_branches;
8826 	struct got_reflist_entry *re;
8827 	struct got_pathlist_entry *pe;
8828 	int i, ch, sendfd = -1, sendstatus;
8829 	pid_t sendpid = -1;
8830 	struct got_send_progress_arg spa;
8831 	int verbosity = 0, overwrite_refs = 0;
8832 	int send_all_branches = 0, send_all_tags = 0;
8833 	struct got_reference *ref = NULL;
8834 	int *pack_fds = NULL;
8835 
8836 	TAILQ_INIT(&branches);
8837 	TAILQ_INIT(&tags);
8838 	TAILQ_INIT(&all_branches);
8839 	TAILQ_INIT(&all_tags);
8840 	TAILQ_INIT(&delete_args);
8841 	TAILQ_INIT(&delete_branches);
8842 
8843 	while ((ch = getopt(argc, argv, "ab:d:fr:t:Tvq")) != -1) {
8844 		switch (ch) {
8845 		case 'a':
8846 			send_all_branches = 1;
8847 			break;
8848 		case 'b':
8849 			error = got_pathlist_append(&branches, optarg, NULL);
8850 			if (error)
8851 				return error;
8852 			nbranches++;
8853 			break;
8854 		case 'd':
8855 			error = got_pathlist_append(&delete_args, optarg, NULL);
8856 			if (error)
8857 				return error;
8858 			break;
8859 		case 'f':
8860 			overwrite_refs = 1;
8861 			break;
8862 		case 'r':
8863 			repo_path = realpath(optarg, NULL);
8864 			if (repo_path == NULL)
8865 				return got_error_from_errno2("realpath",
8866 				    optarg);
8867 			got_path_strip_trailing_slashes(repo_path);
8868 			break;
8869 		case 't':
8870 			error = got_pathlist_append(&tags, optarg, NULL);
8871 			if (error)
8872 				return error;
8873 			ntags++;
8874 			break;
8875 		case 'T':
8876 			send_all_tags = 1;
8877 			break;
8878 		case 'v':
8879 			if (verbosity < 0)
8880 				verbosity = 0;
8881 			else if (verbosity < 3)
8882 				verbosity++;
8883 			break;
8884 		case 'q':
8885 			verbosity = -1;
8886 			break;
8887 		default:
8888 			usage_send();
8889 			/* NOTREACHED */
8890 		}
8891 	}
8892 	argc -= optind;
8893 	argv += optind;
8894 
8895 	if (send_all_branches && !TAILQ_EMPTY(&branches))
8896 		option_conflict('a', 'b');
8897 	if (send_all_tags && !TAILQ_EMPTY(&tags))
8898 		option_conflict('T', 't');
8899 
8900 
8901 	if (argc == 0)
8902 		remote_name = GOT_SEND_DEFAULT_REMOTE_NAME;
8903 	else if (argc == 1)
8904 		remote_name = argv[0];
8905 	else
8906 		usage_send();
8907 
8908 	cwd = getcwd(NULL, 0);
8909 	if (cwd == NULL) {
8910 		error = got_error_from_errno("getcwd");
8911 		goto done;
8912 	}
8913 
8914 	error = got_repo_pack_fds_open(&pack_fds);
8915 	if (error != NULL)
8916 		goto done;
8917 
8918 	if (repo_path == NULL) {
8919 		error = got_worktree_open(&worktree, cwd);
8920 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
8921 			goto done;
8922 		else
8923 			error = NULL;
8924 		if (worktree) {
8925 			repo_path =
8926 			    strdup(got_worktree_get_repo_path(worktree));
8927 			if (repo_path == NULL)
8928 				error = got_error_from_errno("strdup");
8929 			if (error)
8930 				goto done;
8931 		} else {
8932 			repo_path = strdup(cwd);
8933 			if (repo_path == NULL) {
8934 				error = got_error_from_errno("strdup");
8935 				goto done;
8936 			}
8937 		}
8938 	}
8939 
8940 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
8941 	if (error)
8942 		goto done;
8943 
8944 	if (worktree) {
8945 		worktree_conf = got_worktree_get_gotconfig(worktree);
8946 		if (worktree_conf) {
8947 			got_gotconfig_get_remotes(&nremotes, &remotes,
8948 			    worktree_conf);
8949 			for (i = 0; i < nremotes; i++) {
8950 				if (strcmp(remotes[i].name, remote_name) == 0) {
8951 					remote = &remotes[i];
8952 					break;
8953 				}
8954 			}
8955 		}
8956 	}
8957 	if (remote == NULL) {
8958 		repo_conf = got_repo_get_gotconfig(repo);
8959 		if (repo_conf) {
8960 			got_gotconfig_get_remotes(&nremotes, &remotes,
8961 			    repo_conf);
8962 			for (i = 0; i < nremotes; i++) {
8963 				if (strcmp(remotes[i].name, remote_name) == 0) {
8964 					remote = &remotes[i];
8965 					break;
8966 				}
8967 			}
8968 		}
8969 	}
8970 	if (remote == NULL) {
8971 		got_repo_get_gitconfig_remotes(&nremotes, &remotes, repo);
8972 		for (i = 0; i < nremotes; i++) {
8973 			if (strcmp(remotes[i].name, remote_name) == 0) {
8974 				remote = &remotes[i];
8975 				break;
8976 			}
8977 		}
8978 	}
8979 	if (remote == NULL) {
8980 		error = got_error_path(remote_name, GOT_ERR_NO_REMOTE);
8981 		goto done;
8982 	}
8983 
8984 	error = got_dial_parse_uri(&proto, &host, &port, &server_path,
8985 	    &repo_name, remote->send_url);
8986 	if (error)
8987 		goto done;
8988 
8989 	if (strcmp(proto, "git") == 0) {
8990 #ifndef PROFILE
8991 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
8992 		    "sendfd dns inet unveil", NULL) == -1)
8993 			err(1, "pledge");
8994 #endif
8995 	} else if (strcmp(proto, "git+ssh") == 0 ||
8996 	    strcmp(proto, "ssh") == 0) {
8997 #ifndef PROFILE
8998 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
8999 		    "sendfd unveil", NULL) == -1)
9000 			err(1, "pledge");
9001 #endif
9002 	} else if (strcmp(proto, "http") == 0 ||
9003 	    strcmp(proto, "git+http") == 0) {
9004 		error = got_error_path(proto, GOT_ERR_NOT_IMPL);
9005 		goto done;
9006 	} else {
9007 		error = got_error_path(proto, GOT_ERR_BAD_PROTO);
9008 		goto done;
9009 	}
9010 
9011 	error = got_dial_apply_unveil(proto);
9012 	if (error)
9013 		goto done;
9014 
9015 	error = apply_unveil(got_repo_get_path(repo), 0, NULL);
9016 	if (error)
9017 		goto done;
9018 
9019 	if (send_all_branches) {
9020 		error = got_ref_list(&all_branches, repo, "refs/heads",
9021 		    got_ref_cmp_by_name, NULL);
9022 		if (error)
9023 			goto done;
9024 		TAILQ_FOREACH(re, &all_branches, entry) {
9025 			const char *branchname = got_ref_get_name(re->ref);
9026 			error = got_pathlist_append(&branches,
9027 			    branchname, NULL);
9028 			if (error)
9029 				goto done;
9030 			nbranches++;
9031 		}
9032 	} else if (nbranches == 0) {
9033 		for (i = 0; i < remote->nsend_branches; i++) {
9034 			got_pathlist_append(&branches,
9035 			    remote->send_branches[i], NULL);
9036 		}
9037 	}
9038 
9039 	if (send_all_tags) {
9040 		error = got_ref_list(&all_tags, repo, "refs/tags",
9041 		    got_ref_cmp_by_name, NULL);
9042 		if (error)
9043 			goto done;
9044 		TAILQ_FOREACH(re, &all_tags, entry) {
9045 			const char *tagname = got_ref_get_name(re->ref);
9046 			error = got_pathlist_append(&tags,
9047 			    tagname, NULL);
9048 			if (error)
9049 				goto done;
9050 			ntags++;
9051 		}
9052 	}
9053 
9054 	/*
9055 	 * To prevent accidents only branches in refs/heads/ can be deleted
9056 	 * with 'got send -d'.
9057 	 * Deleting anything else requires local repository access or Git.
9058 	 */
9059 	TAILQ_FOREACH(pe, &delete_args, entry) {
9060 		const char *branchname = pe->path;
9061 		char *s;
9062 		struct got_pathlist_entry *new;
9063 		if (strncmp(branchname, "refs/heads/", 11) == 0) {
9064 			s = strdup(branchname);
9065 			if (s == NULL) {
9066 				error = got_error_from_errno("strdup");
9067 				goto done;
9068 			}
9069 		} else {
9070 			if (asprintf(&s, "refs/heads/%s", branchname) == -1) {
9071 				error = got_error_from_errno("asprintf");
9072 				goto done;
9073 			}
9074 		}
9075 		error = got_pathlist_insert(&new, &delete_branches, s, NULL);
9076 		if (error || new == NULL /* duplicate */)
9077 			free(s);
9078 		if (error)
9079 			goto done;
9080 		ndelete_branches++;
9081 	}
9082 
9083 	if (nbranches == 0 && ndelete_branches == 0) {
9084 		struct got_reference *head_ref;
9085 		if (worktree)
9086 			error = got_ref_open(&head_ref, repo,
9087 			    got_worktree_get_head_ref_name(worktree), 0);
9088 		else
9089 			error = got_ref_open(&head_ref, repo, GOT_REF_HEAD, 0);
9090 		if (error)
9091 			goto done;
9092 		if (got_ref_is_symbolic(head_ref)) {
9093 			error = got_ref_resolve_symbolic(&ref, repo, head_ref);
9094 			got_ref_close(head_ref);
9095 			if (error)
9096 				goto done;
9097 		} else
9098 			ref = head_ref;
9099 		error = got_pathlist_append(&branches, got_ref_get_name(ref),
9100 		    NULL);
9101 		if (error)
9102 			goto done;
9103 		nbranches++;
9104 	}
9105 
9106 	if (verbosity >= 0)
9107 		printf("Connecting to \"%s\" %s%s%s\n", remote->name, host,
9108 		    port ? ":" : "", port ? port : "");
9109 
9110 	error = got_send_connect(&sendpid, &sendfd, proto, host, port,
9111 	    server_path, verbosity);
9112 	if (error)
9113 		goto done;
9114 
9115 	memset(&spa, 0, sizeof(spa));
9116 	spa.last_scaled_packsize[0] = '\0';
9117 	spa.last_p_deltify = -1;
9118 	spa.last_p_written = -1;
9119 	spa.verbosity = verbosity;
9120 	spa.delete_branches = &delete_branches;
9121 	error = got_send_pack(remote_name, &branches, &tags, &delete_branches,
9122 	    verbosity, overwrite_refs, sendfd, repo, send_progress, &spa,
9123 	    check_cancelled, NULL);
9124 	if (spa.printed_something)
9125 		putchar('\n');
9126 	if (error)
9127 		goto done;
9128 	if (!spa.sent_something && verbosity >= 0)
9129 		printf("Already up-to-date\n");
9130 done:
9131 	if (sendpid > 0) {
9132 		if (kill(sendpid, SIGTERM) == -1)
9133 			error = got_error_from_errno("kill");
9134 		if (waitpid(sendpid, &sendstatus, 0) == -1 && error == NULL)
9135 			error = got_error_from_errno("waitpid");
9136 	}
9137 	if (sendfd != -1 && close(sendfd) == -1 && error == NULL)
9138 		error = got_error_from_errno("close");
9139 	if (repo) {
9140 		const struct got_error *close_err = got_repo_close(repo);
9141 		if (error == NULL)
9142 			error = close_err;
9143 	}
9144 	if (worktree)
9145 		got_worktree_close(worktree);
9146 	if (pack_fds) {
9147 		const struct got_error *pack_err =
9148 		    got_repo_pack_fds_close(pack_fds);
9149 		if (error == NULL)
9150 			error = pack_err;
9151 	}
9152 	if (ref)
9153 		got_ref_close(ref);
9154 	got_pathlist_free(&branches);
9155 	got_pathlist_free(&tags);
9156 	got_ref_list_free(&all_branches);
9157 	got_ref_list_free(&all_tags);
9158 	got_pathlist_free(&delete_args);
9159 	TAILQ_FOREACH(pe, &delete_branches, entry)
9160 		free((char *)pe->path);
9161 	got_pathlist_free(&delete_branches);
9162 	free(cwd);
9163 	free(repo_path);
9164 	free(proto);
9165 	free(host);
9166 	free(port);
9167 	free(server_path);
9168 	free(repo_name);
9169 	return error;
9170 }
9171 
9172 __dead static void
9173 usage_cherrypick(void)
9174 {
9175 	fprintf(stderr, "usage: %s cherrypick commit-id\n", getprogname());
9176 	exit(1);
9177 }
9178 
9179 static const struct got_error *
9180 cmd_cherrypick(int argc, char *argv[])
9181 {
9182 	const struct got_error *error = NULL;
9183 	struct got_worktree *worktree = NULL;
9184 	struct got_repository *repo = NULL;
9185 	char *cwd = NULL, *commit_id_str = NULL;
9186 	struct got_object_id *commit_id = NULL;
9187 	struct got_commit_object *commit = NULL;
9188 	struct got_object_qid *pid;
9189 	int ch;
9190 	struct got_update_progress_arg upa;
9191 	int *pack_fds = NULL;
9192 
9193 	while ((ch = getopt(argc, argv, "")) != -1) {
9194 		switch (ch) {
9195 		default:
9196 			usage_cherrypick();
9197 			/* NOTREACHED */
9198 		}
9199 	}
9200 
9201 	argc -= optind;
9202 	argv += optind;
9203 
9204 #ifndef PROFILE
9205 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
9206 	    "unveil", NULL) == -1)
9207 		err(1, "pledge");
9208 #endif
9209 	if (argc != 1)
9210 		usage_cherrypick();
9211 
9212 	cwd = getcwd(NULL, 0);
9213 	if (cwd == NULL) {
9214 		error = got_error_from_errno("getcwd");
9215 		goto done;
9216 	}
9217 
9218 	error = got_repo_pack_fds_open(&pack_fds);
9219 	if (error != NULL)
9220 		goto done;
9221 
9222 	error = got_worktree_open(&worktree, cwd);
9223 	if (error) {
9224 		if (error->code == GOT_ERR_NOT_WORKTREE)
9225 			error = wrap_not_worktree_error(error, "cherrypick",
9226 			    cwd);
9227 		goto done;
9228 	}
9229 
9230 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
9231 	    NULL, pack_fds);
9232 	if (error != NULL)
9233 		goto done;
9234 
9235 	error = apply_unveil(got_repo_get_path(repo), 0,
9236 	    got_worktree_get_root_path(worktree));
9237 	if (error)
9238 		goto done;
9239 
9240 	error = got_repo_match_object_id(&commit_id, NULL, argv[0],
9241 	    GOT_OBJ_TYPE_COMMIT, NULL, repo);
9242 	if (error)
9243 		goto done;
9244 	error = got_object_id_str(&commit_id_str, commit_id);
9245 	if (error)
9246 		goto done;
9247 
9248 	error = got_object_open_as_commit(&commit, repo, commit_id);
9249 	if (error)
9250 		goto done;
9251 	pid = STAILQ_FIRST(got_object_commit_get_parent_ids(commit));
9252 	memset(&upa, 0, sizeof(upa));
9253 	error = got_worktree_merge_files(worktree, pid ? &pid->id : NULL,
9254 	    commit_id, repo, update_progress, &upa, check_cancelled,
9255 	    NULL);
9256 	if (error != NULL)
9257 		goto done;
9258 
9259 	if (upa.did_something)
9260 		printf("Merged commit %s\n", commit_id_str);
9261 	print_merge_progress_stats(&upa);
9262 done:
9263 	if (commit)
9264 		got_object_commit_close(commit);
9265 	free(commit_id_str);
9266 	if (worktree)
9267 		got_worktree_close(worktree);
9268 	if (repo) {
9269 		const struct got_error *close_err = got_repo_close(repo);
9270 		if (error == NULL)
9271 			error = close_err;
9272 	}
9273 	if (pack_fds) {
9274 		const struct got_error *pack_err =
9275 		    got_repo_pack_fds_close(pack_fds);
9276 		if (error == NULL)
9277 			error = pack_err;
9278 	}
9279 
9280 	return error;
9281 }
9282 
9283 __dead static void
9284 usage_backout(void)
9285 {
9286 	fprintf(stderr, "usage: %s backout commit-id\n", getprogname());
9287 	exit(1);
9288 }
9289 
9290 static const struct got_error *
9291 cmd_backout(int argc, char *argv[])
9292 {
9293 	const struct got_error *error = NULL;
9294 	struct got_worktree *worktree = NULL;
9295 	struct got_repository *repo = NULL;
9296 	char *cwd = NULL, *commit_id_str = NULL;
9297 	struct got_object_id *commit_id = NULL;
9298 	struct got_commit_object *commit = NULL;
9299 	struct got_object_qid *pid;
9300 	int ch;
9301 	struct got_update_progress_arg upa;
9302 	int *pack_fds = NULL;
9303 
9304 	while ((ch = getopt(argc, argv, "")) != -1) {
9305 		switch (ch) {
9306 		default:
9307 			usage_backout();
9308 			/* NOTREACHED */
9309 		}
9310 	}
9311 
9312 	argc -= optind;
9313 	argv += optind;
9314 
9315 #ifndef PROFILE
9316 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
9317 	    "unveil", NULL) == -1)
9318 		err(1, "pledge");
9319 #endif
9320 	if (argc != 1)
9321 		usage_backout();
9322 
9323 	cwd = getcwd(NULL, 0);
9324 	if (cwd == NULL) {
9325 		error = got_error_from_errno("getcwd");
9326 		goto done;
9327 	}
9328 
9329 	error = got_repo_pack_fds_open(&pack_fds);
9330 	if (error != NULL)
9331 		goto done;
9332 
9333 	error = got_worktree_open(&worktree, cwd);
9334 	if (error) {
9335 		if (error->code == GOT_ERR_NOT_WORKTREE)
9336 			error = wrap_not_worktree_error(error, "backout", cwd);
9337 		goto done;
9338 	}
9339 
9340 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
9341 	    NULL, pack_fds);
9342 	if (error != NULL)
9343 		goto done;
9344 
9345 	error = apply_unveil(got_repo_get_path(repo), 0,
9346 	    got_worktree_get_root_path(worktree));
9347 	if (error)
9348 		goto done;
9349 
9350 	error = got_repo_match_object_id(&commit_id, NULL, argv[0],
9351 	    GOT_OBJ_TYPE_COMMIT, NULL, repo);
9352 	if (error)
9353 		goto done;
9354 	error = got_object_id_str(&commit_id_str, commit_id);
9355 	if (error)
9356 		goto done;
9357 
9358 	error = got_object_open_as_commit(&commit, repo, commit_id);
9359 	if (error)
9360 		goto done;
9361 	pid = STAILQ_FIRST(got_object_commit_get_parent_ids(commit));
9362 	if (pid == NULL) {
9363 		error = got_error(GOT_ERR_ROOT_COMMIT);
9364 		goto done;
9365 	}
9366 
9367 	memset(&upa, 0, sizeof(upa));
9368 	error = got_worktree_merge_files(worktree, commit_id, &pid->id,
9369 	    repo, update_progress, &upa, check_cancelled, NULL);
9370 	if (error != NULL)
9371 		goto done;
9372 
9373 	if (upa.did_something)
9374 		printf("Backed out commit %s\n", commit_id_str);
9375 	print_merge_progress_stats(&upa);
9376 done:
9377 	if (commit)
9378 		got_object_commit_close(commit);
9379 	free(commit_id_str);
9380 	if (worktree)
9381 		got_worktree_close(worktree);
9382 	if (repo) {
9383 		const struct got_error *close_err = got_repo_close(repo);
9384 		if (error == NULL)
9385 			error = close_err;
9386 	}
9387 	if (pack_fds) {
9388 		const struct got_error *pack_err =
9389 		    got_repo_pack_fds_close(pack_fds);
9390 		if (error == NULL)
9391 			error = pack_err;
9392 	}
9393 	return error;
9394 }
9395 
9396 __dead static void
9397 usage_rebase(void)
9398 {
9399 	fprintf(stderr, "usage: %s rebase [-a] [-c] [-l] [-X] [branch]\n",
9400 	    getprogname());
9401 	exit(1);
9402 }
9403 
9404 static void
9405 trim_logmsg(char *logmsg, int limit)
9406 {
9407 	char *nl;
9408 	size_t len;
9409 
9410 	len = strlen(logmsg);
9411 	if (len > limit)
9412 		len = limit;
9413 	logmsg[len] = '\0';
9414 	nl = strchr(logmsg, '\n');
9415 	if (nl)
9416 		*nl = '\0';
9417 }
9418 
9419 static const struct got_error *
9420 get_short_logmsg(char **logmsg, int limit, struct got_commit_object *commit)
9421 {
9422 	const struct got_error *err;
9423 	char *logmsg0 = NULL;
9424 	const char *s;
9425 
9426 	err = got_object_commit_get_logmsg(&logmsg0, commit);
9427 	if (err)
9428 		return err;
9429 
9430 	s = logmsg0;
9431 	while (isspace((unsigned char)s[0]))
9432 		s++;
9433 
9434 	*logmsg = strdup(s);
9435 	if (*logmsg == NULL) {
9436 		err = got_error_from_errno("strdup");
9437 		goto done;
9438 	}
9439 
9440 	trim_logmsg(*logmsg, limit);
9441 done:
9442 	free(logmsg0);
9443 	return err;
9444 }
9445 
9446 static const struct got_error *
9447 show_rebase_merge_conflict(struct got_object_id *id,
9448     struct got_repository *repo)
9449 {
9450 	const struct got_error *err;
9451 	struct got_commit_object *commit = NULL;
9452 	char *id_str = NULL, *logmsg = NULL;
9453 
9454 	err = got_object_open_as_commit(&commit, repo, id);
9455 	if (err)
9456 		return err;
9457 
9458 	err = got_object_id_str(&id_str, id);
9459 	if (err)
9460 		goto done;
9461 
9462 	id_str[12] = '\0';
9463 
9464 	err = get_short_logmsg(&logmsg, 42, commit);
9465 	if (err)
9466 		goto done;
9467 
9468 	printf("%s -> merge conflict: %s\n", id_str, logmsg);
9469 done:
9470 	free(id_str);
9471 	got_object_commit_close(commit);
9472 	free(logmsg);
9473 	return err;
9474 }
9475 
9476 static const struct got_error *
9477 show_rebase_progress(struct got_commit_object *commit,
9478     struct got_object_id *old_id, struct got_object_id *new_id)
9479 {
9480 	const struct got_error *err;
9481 	char *old_id_str = NULL, *new_id_str = NULL, *logmsg = NULL;
9482 
9483 	err = got_object_id_str(&old_id_str, old_id);
9484 	if (err)
9485 		goto done;
9486 
9487 	if (new_id) {
9488 		err = got_object_id_str(&new_id_str, new_id);
9489 		if (err)
9490 			goto done;
9491 	}
9492 
9493 	old_id_str[12] = '\0';
9494 	if (new_id_str)
9495 		new_id_str[12] = '\0';
9496 
9497 	err = get_short_logmsg(&logmsg, 42, commit);
9498 	if (err)
9499 		goto done;
9500 
9501 	printf("%s -> %s: %s\n", old_id_str,
9502 	    new_id_str ? new_id_str : "no-op change", logmsg);
9503 done:
9504 	free(old_id_str);
9505 	free(new_id_str);
9506 	free(logmsg);
9507 	return err;
9508 }
9509 
9510 static const struct got_error *
9511 rebase_complete(struct got_worktree *worktree, struct got_fileindex *fileindex,
9512     struct got_reference *branch, struct got_reference *new_base_branch,
9513     struct got_reference *tmp_branch, struct got_repository *repo,
9514     int create_backup)
9515 {
9516 	printf("Switching work tree to %s\n", got_ref_get_name(branch));
9517 	return got_worktree_rebase_complete(worktree, fileindex,
9518 	    new_base_branch, tmp_branch, branch, repo, create_backup);
9519 }
9520 
9521 static const struct got_error *
9522 rebase_commit(struct got_pathlist_head *merged_paths,
9523     struct got_worktree *worktree, struct got_fileindex *fileindex,
9524     struct got_reference *tmp_branch,
9525     struct got_object_id *commit_id, struct got_repository *repo)
9526 {
9527 	const struct got_error *error;
9528 	struct got_commit_object *commit;
9529 	struct got_object_id *new_commit_id;
9530 
9531 	error = got_object_open_as_commit(&commit, repo, commit_id);
9532 	if (error)
9533 		return error;
9534 
9535 	error = got_worktree_rebase_commit(&new_commit_id, merged_paths,
9536 	    worktree, fileindex, tmp_branch, commit, commit_id, repo);
9537 	if (error) {
9538 		if (error->code != GOT_ERR_COMMIT_NO_CHANGES)
9539 			goto done;
9540 		error = show_rebase_progress(commit, commit_id, NULL);
9541 	} else {
9542 		error = show_rebase_progress(commit, commit_id, new_commit_id);
9543 		free(new_commit_id);
9544 	}
9545 done:
9546 	got_object_commit_close(commit);
9547 	return error;
9548 }
9549 
9550 struct check_path_prefix_arg {
9551 	const char *path_prefix;
9552 	size_t len;
9553 	int errcode;
9554 };
9555 
9556 static const struct got_error *
9557 check_path_prefix_in_diff(void *arg, struct got_blob_object *blob1,
9558     struct got_blob_object *blob2, FILE *f1, FILE *f2,
9559     struct got_object_id *id1, struct got_object_id *id2,
9560     const char *path1, const char *path2,
9561     mode_t mode1, mode_t mode2, struct got_repository *repo)
9562 {
9563 	struct check_path_prefix_arg *a = arg;
9564 
9565 	if ((path1 && !got_path_is_child(path1, a->path_prefix, a->len)) ||
9566 	    (path2 && !got_path_is_child(path2, a->path_prefix, a->len)))
9567 		return got_error(a->errcode);
9568 
9569 	return NULL;
9570 }
9571 
9572 static const struct got_error *
9573 check_path_prefix(struct got_object_id *parent_id,
9574     struct got_object_id *commit_id, const char *path_prefix,
9575     int errcode, struct got_repository *repo)
9576 {
9577 	const struct got_error *err;
9578 	struct got_tree_object *tree1 = NULL, *tree2 = NULL;
9579 	struct got_commit_object *commit = NULL, *parent_commit = NULL;
9580 	struct check_path_prefix_arg cpp_arg;
9581 
9582 	if (got_path_is_root_dir(path_prefix))
9583 		return NULL;
9584 
9585 	err = got_object_open_as_commit(&commit, repo, commit_id);
9586 	if (err)
9587 		goto done;
9588 
9589 	err = got_object_open_as_commit(&parent_commit, repo, parent_id);
9590 	if (err)
9591 		goto done;
9592 
9593 	err = got_object_open_as_tree(&tree1, repo,
9594 	    got_object_commit_get_tree_id(parent_commit));
9595 	if (err)
9596 		goto done;
9597 
9598 	err = got_object_open_as_tree(&tree2, repo,
9599 	    got_object_commit_get_tree_id(commit));
9600 	if (err)
9601 		goto done;
9602 
9603 	cpp_arg.path_prefix = path_prefix;
9604 	while (cpp_arg.path_prefix[0] == '/')
9605 		cpp_arg.path_prefix++;
9606 	cpp_arg.len = strlen(cpp_arg.path_prefix);
9607 	cpp_arg.errcode = errcode;
9608 	err = got_diff_tree(tree1, tree2, NULL, NULL, -1, -1, "", "", repo,
9609 	    check_path_prefix_in_diff, &cpp_arg, 0);
9610 done:
9611 	if (tree1)
9612 		got_object_tree_close(tree1);
9613 	if (tree2)
9614 		got_object_tree_close(tree2);
9615 	if (commit)
9616 		got_object_commit_close(commit);
9617 	if (parent_commit)
9618 		got_object_commit_close(parent_commit);
9619 	return err;
9620 }
9621 
9622 static const struct got_error *
9623 collect_commits(struct got_object_id_queue *commits,
9624     struct got_object_id *initial_commit_id,
9625     struct got_object_id *iter_start_id, struct got_object_id *iter_stop_id,
9626     const char *path_prefix, int path_prefix_errcode,
9627     struct got_repository *repo)
9628 {
9629 	const struct got_error *err = NULL;
9630 	struct got_commit_graph *graph = NULL;
9631 	struct got_object_id *parent_id = NULL;
9632 	struct got_object_qid *qid;
9633         struct got_object_id *commit_id = initial_commit_id;
9634 
9635 	err = got_commit_graph_open(&graph, "/", 1);
9636 	if (err)
9637 		return err;
9638 
9639 	err = got_commit_graph_iter_start(graph, iter_start_id, repo,
9640 	    check_cancelled, NULL);
9641 	if (err)
9642 		goto done;
9643 	while (got_object_id_cmp(commit_id, iter_stop_id) != 0) {
9644 		err = got_commit_graph_iter_next(&parent_id, graph, repo,
9645 		    check_cancelled, NULL);
9646 		if (err) {
9647 			if (err->code == GOT_ERR_ITER_COMPLETED) {
9648 				err = got_error_msg(GOT_ERR_ANCESTRY,
9649 				    "ran out of commits to rebase before "
9650 				    "youngest common ancestor commit has "
9651 				    "been reached?!?");
9652 			}
9653 			goto done;
9654 		} else {
9655 			err = check_path_prefix(parent_id, commit_id,
9656 			    path_prefix, path_prefix_errcode, repo);
9657 			if (err)
9658 				goto done;
9659 
9660 			err = got_object_qid_alloc(&qid, commit_id);
9661 			if (err)
9662 				goto done;
9663 			STAILQ_INSERT_HEAD(commits, qid, entry);
9664 			commit_id = parent_id;
9665 		}
9666 	}
9667 done:
9668 	got_commit_graph_close(graph);
9669 	return err;
9670 }
9671 
9672 static const struct got_error *
9673 get_commit_brief_str(char **brief_str, struct got_commit_object *commit)
9674 {
9675 	const struct got_error *err = NULL;
9676 	time_t committer_time;
9677 	struct tm tm;
9678 	char datebuf[11]; /* YYYY-MM-DD + NUL */
9679 	char *author0 = NULL, *author, *smallerthan;
9680 	char *logmsg0 = NULL, *logmsg, *newline;
9681 
9682 	committer_time = got_object_commit_get_committer_time(commit);
9683 	if (gmtime_r(&committer_time, &tm) == NULL)
9684 		return got_error_from_errno("gmtime_r");
9685 	if (strftime(datebuf, sizeof(datebuf), "%G-%m-%d", &tm) == 0)
9686 		return got_error(GOT_ERR_NO_SPACE);
9687 
9688 	author0 = strdup(got_object_commit_get_author(commit));
9689 	if (author0 == NULL)
9690 		return got_error_from_errno("strdup");
9691 	author = author0;
9692 	smallerthan = strchr(author, '<');
9693 	if (smallerthan && smallerthan[1] != '\0')
9694 		author = smallerthan + 1;
9695 	author[strcspn(author, "@>")] = '\0';
9696 
9697 	err = got_object_commit_get_logmsg(&logmsg0, commit);
9698 	if (err)
9699 		goto done;
9700 	logmsg = logmsg0;
9701 	while (*logmsg == '\n')
9702 		logmsg++;
9703 	newline = strchr(logmsg, '\n');
9704 	if (newline)
9705 		*newline = '\0';
9706 
9707 	if (asprintf(brief_str, "%s %s  %s",
9708 	    datebuf, author, logmsg) == -1)
9709 		err = got_error_from_errno("asprintf");
9710 done:
9711 	free(author0);
9712 	free(logmsg0);
9713 	return err;
9714 }
9715 
9716 static const struct got_error *
9717 delete_backup_ref(struct got_reference *ref, struct got_object_id *id,
9718     struct got_repository *repo)
9719 {
9720 	const struct got_error *err;
9721 	char *id_str;
9722 
9723 	err = got_object_id_str(&id_str, id);
9724 	if (err)
9725 		return err;
9726 
9727 	err = got_ref_delete(ref, repo);
9728 	if (err)
9729 		goto done;
9730 
9731 	printf("Deleted %s: %s\n", got_ref_get_name(ref), id_str);
9732 done:
9733 	free(id_str);
9734 	return err;
9735 }
9736 
9737 static const struct got_error *
9738 print_backup_ref(const char *branch_name, const char *new_id_str,
9739     struct got_object_id *old_commit_id, struct got_commit_object *old_commit,
9740     struct got_reflist_object_id_map *refs_idmap,
9741     struct got_repository *repo)
9742 {
9743 	const struct got_error *err = NULL;
9744 	struct got_reflist_head *refs;
9745 	char *refs_str = NULL;
9746 	struct got_object_id *new_commit_id = NULL;
9747 	struct got_commit_object *new_commit = NULL;
9748 	char *new_commit_brief_str = NULL;
9749 	struct got_object_id *yca_id = NULL;
9750 	struct got_commit_object *yca_commit = NULL;
9751 	char *yca_id_str = NULL, *yca_brief_str = NULL;
9752 	char *custom_refs_str;
9753 
9754 	if (asprintf(&custom_refs_str, "formerly %s", branch_name) == -1)
9755 		return got_error_from_errno("asprintf");
9756 
9757 	err = print_commit(old_commit, old_commit_id, repo, NULL, NULL,
9758 	    0, 0, refs_idmap, custom_refs_str);
9759 	if (err)
9760 		goto done;
9761 
9762 	err = got_object_resolve_id_str(&new_commit_id, repo, new_id_str);
9763 	if (err)
9764 		goto done;
9765 
9766 	refs = got_reflist_object_id_map_lookup(refs_idmap, new_commit_id);
9767 	if (refs) {
9768 		err = build_refs_str(&refs_str, refs, new_commit_id, repo, 0);
9769 		if (err)
9770 			goto done;
9771 	}
9772 
9773 	err = got_object_open_as_commit(&new_commit, repo, new_commit_id);
9774 	if (err)
9775 		goto done;
9776 
9777 	err = get_commit_brief_str(&new_commit_brief_str, new_commit);
9778 	if (err)
9779 		goto done;
9780 
9781 	err = got_commit_graph_find_youngest_common_ancestor(&yca_id,
9782 	    old_commit_id, new_commit_id, 1, repo, check_cancelled, NULL);
9783 	if (err)
9784 		goto done;
9785 
9786 	printf("has become commit %s%s%s%s\n %s\n", new_id_str,
9787 	    refs_str ? " (" : "", refs_str ? refs_str : "",
9788 	    refs_str ? ")" : "", new_commit_brief_str);
9789 	if (yca_id && got_object_id_cmp(yca_id, new_commit_id) != 0 &&
9790 	    got_object_id_cmp(yca_id, old_commit_id) != 0) {
9791 		free(refs_str);
9792 		refs_str = NULL;
9793 
9794 		err = got_object_open_as_commit(&yca_commit, repo, yca_id);
9795 		if (err)
9796 			goto done;
9797 
9798 		err = get_commit_brief_str(&yca_brief_str, yca_commit);
9799 		if (err)
9800 			goto done;
9801 
9802 		err = got_object_id_str(&yca_id_str, yca_id);
9803 		if (err)
9804 			goto done;
9805 
9806 		refs = got_reflist_object_id_map_lookup(refs_idmap, yca_id);
9807 		if (refs) {
9808 			err = build_refs_str(&refs_str, refs, yca_id, repo, 0);
9809 			if (err)
9810 				goto done;
9811 		}
9812 		printf("history forked at %s%s%s%s\n %s\n",
9813 		    yca_id_str,
9814 		    refs_str ? " (" : "", refs_str ? refs_str : "",
9815 		    refs_str ? ")" : "", yca_brief_str);
9816 	}
9817 done:
9818 	free(custom_refs_str);
9819 	free(new_commit_id);
9820 	free(refs_str);
9821 	free(yca_id);
9822 	free(yca_id_str);
9823 	free(yca_brief_str);
9824 	if (new_commit)
9825 		got_object_commit_close(new_commit);
9826 	if (yca_commit)
9827 		got_object_commit_close(yca_commit);
9828 
9829 	return NULL;
9830 }
9831 
9832 static const struct got_error *
9833 process_backup_refs(const char *backup_ref_prefix,
9834     const char *wanted_branch_name,
9835     int delete, struct got_repository *repo)
9836 {
9837 	const struct got_error *err;
9838 	struct got_reflist_head refs, backup_refs;
9839 	struct got_reflist_entry *re;
9840 	const size_t backup_ref_prefix_len = strlen(backup_ref_prefix);
9841 	struct got_object_id *old_commit_id = NULL;
9842 	char *branch_name = NULL;
9843 	struct got_commit_object *old_commit = NULL;
9844 	struct got_reflist_object_id_map *refs_idmap = NULL;
9845 	int wanted_branch_found = 0;
9846 
9847 	TAILQ_INIT(&refs);
9848 	TAILQ_INIT(&backup_refs);
9849 
9850 	err = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name, NULL);
9851 	if (err)
9852 		return err;
9853 
9854 	err = got_reflist_object_id_map_create(&refs_idmap, &refs, repo);
9855 	if (err)
9856 		goto done;
9857 
9858 	if (wanted_branch_name) {
9859 		if (strncmp(wanted_branch_name, "refs/heads/", 11) == 0)
9860 			wanted_branch_name += 11;
9861 	}
9862 
9863 	err = got_ref_list(&backup_refs, repo, backup_ref_prefix,
9864 	    got_ref_cmp_by_commit_timestamp_descending, repo);
9865 	if (err)
9866 		goto done;
9867 
9868 	TAILQ_FOREACH(re, &backup_refs, entry) {
9869 		const char *refname = got_ref_get_name(re->ref);
9870 		char *slash;
9871 
9872 		err = check_cancelled(NULL);
9873 		if (err)
9874 			break;
9875 
9876 		err = got_ref_resolve(&old_commit_id, repo, re->ref);
9877 		if (err)
9878 			break;
9879 
9880 		err = got_object_open_as_commit(&old_commit, repo,
9881 		    old_commit_id);
9882 		if (err)
9883 			break;
9884 
9885 		if (strncmp(backup_ref_prefix, refname,
9886 		    backup_ref_prefix_len) == 0)
9887 			refname += backup_ref_prefix_len;
9888 
9889 		while (refname[0] == '/')
9890 			refname++;
9891 
9892 		branch_name = strdup(refname);
9893 		if (branch_name == NULL) {
9894 			err = got_error_from_errno("strdup");
9895 			break;
9896 		}
9897 		slash = strrchr(branch_name, '/');
9898 		if (slash) {
9899 			*slash = '\0';
9900 			refname += strlen(branch_name) + 1;
9901 		}
9902 
9903 		if (wanted_branch_name == NULL ||
9904 		    strcmp(wanted_branch_name, branch_name) == 0) {
9905 			wanted_branch_found = 1;
9906 			if (delete) {
9907 				err = delete_backup_ref(re->ref,
9908 				    old_commit_id, repo);
9909 			} else {
9910 				err = print_backup_ref(branch_name, refname,
9911 				    old_commit_id, old_commit, refs_idmap,
9912 				    repo);
9913 			}
9914 			if (err)
9915 				break;
9916 		}
9917 
9918 		free(old_commit_id);
9919 		old_commit_id = NULL;
9920 		free(branch_name);
9921 		branch_name = NULL;
9922 		got_object_commit_close(old_commit);
9923 		old_commit = NULL;
9924 	}
9925 
9926 	if (wanted_branch_name && !wanted_branch_found) {
9927 		err = got_error_fmt(GOT_ERR_NOT_REF,
9928 		    "%s/%s/", backup_ref_prefix, wanted_branch_name);
9929 	}
9930 done:
9931 	if (refs_idmap)
9932 		got_reflist_object_id_map_free(refs_idmap);
9933 	got_ref_list_free(&refs);
9934 	got_ref_list_free(&backup_refs);
9935 	free(old_commit_id);
9936 	free(branch_name);
9937 	if (old_commit)
9938 		got_object_commit_close(old_commit);
9939 	return err;
9940 }
9941 
9942 static const struct got_error *
9943 abort_progress(void *arg, unsigned char status, const char *path)
9944 {
9945 	/*
9946 	 * Unversioned files should not clutter progress output when
9947 	 * an operation is aborted.
9948 	 */
9949 	if (status == GOT_STATUS_UNVERSIONED)
9950 		return NULL;
9951 
9952 	return update_progress(arg, status, path);
9953 }
9954 
9955 static const struct got_error *
9956 cmd_rebase(int argc, char *argv[])
9957 {
9958 	const struct got_error *error = NULL;
9959 	struct got_worktree *worktree = NULL;
9960 	struct got_repository *repo = NULL;
9961 	struct got_fileindex *fileindex = NULL;
9962 	char *cwd = NULL;
9963 	struct got_reference *branch = NULL;
9964 	struct got_reference *new_base_branch = NULL, *tmp_branch = NULL;
9965 	struct got_object_id *commit_id = NULL, *parent_id = NULL;
9966 	struct got_object_id *resume_commit_id = NULL;
9967 	struct got_object_id *branch_head_commit_id = NULL, *yca_id = NULL;
9968 	struct got_commit_object *commit = NULL;
9969 	int ch, rebase_in_progress = 0, abort_rebase = 0, continue_rebase = 0;
9970 	int histedit_in_progress = 0, merge_in_progress = 0;
9971 	int create_backup = 1, list_backups = 0, delete_backups = 0;
9972 	struct got_object_id_queue commits;
9973 	struct got_pathlist_head merged_paths;
9974 	const struct got_object_id_queue *parent_ids;
9975 	struct got_object_qid *qid, *pid;
9976 	struct got_update_progress_arg upa;
9977 	int *pack_fds = NULL;
9978 
9979 	STAILQ_INIT(&commits);
9980 	TAILQ_INIT(&merged_paths);
9981 	memset(&upa, 0, sizeof(upa));
9982 
9983 	while ((ch = getopt(argc, argv, "aclX")) != -1) {
9984 		switch (ch) {
9985 		case 'a':
9986 			abort_rebase = 1;
9987 			break;
9988 		case 'c':
9989 			continue_rebase = 1;
9990 			break;
9991 		case 'l':
9992 			list_backups = 1;
9993 			break;
9994 		case 'X':
9995 			delete_backups = 1;
9996 			break;
9997 		default:
9998 			usage_rebase();
9999 			/* NOTREACHED */
10000 		}
10001 	}
10002 
10003 	argc -= optind;
10004 	argv += optind;
10005 
10006 #ifndef PROFILE
10007 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
10008 	    "unveil", NULL) == -1)
10009 		err(1, "pledge");
10010 #endif
10011 	if (list_backups) {
10012 		if (abort_rebase)
10013 			option_conflict('l', 'a');
10014 		if (continue_rebase)
10015 			option_conflict('l', 'c');
10016 		if (delete_backups)
10017 			option_conflict('l', 'X');
10018 		if (argc != 0 && argc != 1)
10019 			usage_rebase();
10020 	} else if (delete_backups) {
10021 		if (abort_rebase)
10022 			option_conflict('X', 'a');
10023 		if (continue_rebase)
10024 			option_conflict('X', 'c');
10025 		if (list_backups)
10026 			option_conflict('l', 'X');
10027 		if (argc != 0 && argc != 1)
10028 			usage_rebase();
10029 	} else {
10030 		if (abort_rebase && continue_rebase)
10031 			usage_rebase();
10032 		else if (abort_rebase || continue_rebase) {
10033 			if (argc != 0)
10034 				usage_rebase();
10035 		} else if (argc != 1)
10036 			usage_rebase();
10037 	}
10038 
10039 	cwd = getcwd(NULL, 0);
10040 	if (cwd == NULL) {
10041 		error = got_error_from_errno("getcwd");
10042 		goto done;
10043 	}
10044 
10045 	error = got_repo_pack_fds_open(&pack_fds);
10046 	if (error != NULL)
10047 		goto done;
10048 
10049 	error = got_worktree_open(&worktree, cwd);
10050 	if (error) {
10051 		if (list_backups || delete_backups) {
10052 			if (error->code != GOT_ERR_NOT_WORKTREE)
10053 				goto done;
10054 		} else {
10055 			if (error->code == GOT_ERR_NOT_WORKTREE)
10056 				error = wrap_not_worktree_error(error,
10057 				    "rebase", cwd);
10058 			goto done;
10059 		}
10060 	}
10061 
10062 	error = got_repo_open(&repo,
10063 	    worktree ? got_worktree_get_repo_path(worktree) : cwd, NULL,
10064 	    pack_fds);
10065 	if (error != NULL)
10066 		goto done;
10067 
10068 	error = apply_unveil(got_repo_get_path(repo), 0,
10069 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
10070 	if (error)
10071 		goto done;
10072 
10073 	if (list_backups || delete_backups) {
10074 		error = process_backup_refs(
10075 		    GOT_WORKTREE_REBASE_BACKUP_REF_PREFIX,
10076 		    argc == 1 ? argv[0] : NULL, delete_backups, repo);
10077 		goto done; /* nothing else to do */
10078 	}
10079 
10080 	error = got_worktree_histedit_in_progress(&histedit_in_progress,
10081 	    worktree);
10082 	if (error)
10083 		goto done;
10084 	if (histedit_in_progress) {
10085 		error = got_error(GOT_ERR_HISTEDIT_BUSY);
10086 		goto done;
10087 	}
10088 
10089 	error = got_worktree_merge_in_progress(&merge_in_progress,
10090 	    worktree, repo);
10091 	if (error)
10092 		goto done;
10093 	if (merge_in_progress) {
10094 		error = got_error(GOT_ERR_MERGE_BUSY);
10095 		goto done;
10096 	}
10097 
10098 	error = got_worktree_rebase_in_progress(&rebase_in_progress, worktree);
10099 	if (error)
10100 		goto done;
10101 
10102 	if (abort_rebase) {
10103 		if (!rebase_in_progress) {
10104 			error = got_error(GOT_ERR_NOT_REBASING);
10105 			goto done;
10106 		}
10107 		error = got_worktree_rebase_continue(&resume_commit_id,
10108 		    &new_base_branch, &tmp_branch, &branch, &fileindex,
10109 		    worktree, repo);
10110 		if (error)
10111 			goto done;
10112 		printf("Switching work tree to %s\n",
10113 		    got_ref_get_symref_target(new_base_branch));
10114 		error = got_worktree_rebase_abort(worktree, fileindex, repo,
10115 		    new_base_branch, abort_progress, &upa);
10116 		if (error)
10117 			goto done;
10118 		printf("Rebase of %s aborted\n", got_ref_get_name(branch));
10119 		print_merge_progress_stats(&upa);
10120 		goto done; /* nothing else to do */
10121 	}
10122 
10123 	if (continue_rebase) {
10124 		if (!rebase_in_progress) {
10125 			error = got_error(GOT_ERR_NOT_REBASING);
10126 			goto done;
10127 		}
10128 		error = got_worktree_rebase_continue(&resume_commit_id,
10129 		    &new_base_branch, &tmp_branch, &branch, &fileindex,
10130 		    worktree, repo);
10131 		if (error)
10132 			goto done;
10133 
10134 		error = rebase_commit(NULL, worktree, fileindex, tmp_branch,
10135 		    resume_commit_id, repo);
10136 		if (error)
10137 			goto done;
10138 
10139 		yca_id = got_object_id_dup(resume_commit_id);
10140 		if (yca_id == NULL) {
10141 			error = got_error_from_errno("got_object_id_dup");
10142 			goto done;
10143 		}
10144 	} else {
10145 		error = got_ref_open(&branch, repo, argv[0], 0);
10146 		if (error != NULL)
10147 			goto done;
10148 	}
10149 
10150 	error = got_ref_resolve(&branch_head_commit_id, repo, branch);
10151 	if (error)
10152 		goto done;
10153 
10154 	if (!continue_rebase) {
10155 		struct got_object_id *base_commit_id;
10156 
10157 		base_commit_id = got_worktree_get_base_commit_id(worktree);
10158 		error = got_commit_graph_find_youngest_common_ancestor(&yca_id,
10159 		    base_commit_id, branch_head_commit_id, 1, repo,
10160 		    check_cancelled, NULL);
10161 		if (error)
10162 			goto done;
10163 		if (yca_id == NULL) {
10164 			error = got_error_msg(GOT_ERR_ANCESTRY,
10165 			    "specified branch shares no common ancestry "
10166 			    "with work tree's branch");
10167 			goto done;
10168 		}
10169 
10170 		error = check_same_branch(base_commit_id, branch, yca_id, repo);
10171 		if (error) {
10172 			if (error->code != GOT_ERR_ANCESTRY)
10173 				goto done;
10174 			error = NULL;
10175 		} else {
10176 			struct got_pathlist_head paths;
10177 			printf("%s is already based on %s\n",
10178 			    got_ref_get_name(branch),
10179 			    got_worktree_get_head_ref_name(worktree));
10180 			error = switch_head_ref(branch, branch_head_commit_id,
10181 			    worktree, repo);
10182 			if (error)
10183 				goto done;
10184 			error = got_worktree_set_base_commit_id(worktree, repo,
10185 			    branch_head_commit_id);
10186 			if (error)
10187 				goto done;
10188 			TAILQ_INIT(&paths);
10189 			error = got_pathlist_append(&paths, "", NULL);
10190 			if (error)
10191 				goto done;
10192 			error = got_worktree_checkout_files(worktree,
10193 			    &paths, repo, update_progress, &upa,
10194 			    check_cancelled, NULL);
10195 			got_pathlist_free(&paths);
10196 			if (error)
10197 				goto done;
10198 			if (upa.did_something) {
10199 				char *id_str;
10200 				error = got_object_id_str(&id_str,
10201 				    branch_head_commit_id);
10202 				if (error)
10203 					goto done;
10204 				printf("Updated to %s: %s\n",
10205 				    got_worktree_get_head_ref_name(worktree),
10206 				    id_str);
10207 				free(id_str);
10208 			} else
10209 				printf("Already up-to-date\n");
10210 			print_update_progress_stats(&upa);
10211 			goto done;
10212 		}
10213 	}
10214 
10215 	commit_id = branch_head_commit_id;
10216 	error = got_object_open_as_commit(&commit, repo, commit_id);
10217 	if (error)
10218 		goto done;
10219 
10220 	parent_ids = got_object_commit_get_parent_ids(commit);
10221 	pid = STAILQ_FIRST(parent_ids);
10222 	if (pid == NULL) {
10223 		error = got_error(GOT_ERR_EMPTY_REBASE);
10224 		goto done;
10225 	}
10226 	error = collect_commits(&commits, commit_id, &pid->id,
10227 	    yca_id, got_worktree_get_path_prefix(worktree),
10228 	    GOT_ERR_REBASE_PATH, repo);
10229 	got_object_commit_close(commit);
10230 	commit = NULL;
10231 	if (error)
10232 		goto done;
10233 
10234 	if (!continue_rebase) {
10235 		error = got_worktree_rebase_prepare(&new_base_branch,
10236 		    &tmp_branch, &fileindex, worktree, branch, repo);
10237 		if (error)
10238 			goto done;
10239 	}
10240 
10241 	if (STAILQ_EMPTY(&commits)) {
10242 		if (continue_rebase) {
10243 			error = rebase_complete(worktree, fileindex,
10244 			    branch, new_base_branch, tmp_branch, repo,
10245 			    create_backup);
10246 			goto done;
10247 		} else {
10248 			/* Fast-forward the reference of the branch. */
10249 			struct got_object_id *new_head_commit_id;
10250 			char *id_str;
10251 			error = got_ref_resolve(&new_head_commit_id, repo,
10252 			    new_base_branch);
10253 			if (error)
10254 				goto done;
10255 			error = got_object_id_str(&id_str, new_head_commit_id);
10256 			printf("Forwarding %s to commit %s\n",
10257 			    got_ref_get_name(branch), id_str);
10258 			free(id_str);
10259 			error = got_ref_change_ref(branch,
10260 			    new_head_commit_id);
10261 			if (error)
10262 				goto done;
10263 			/* No backup needed since objects did not change. */
10264 			create_backup = 0;
10265 		}
10266 	}
10267 
10268 	pid = NULL;
10269 	STAILQ_FOREACH(qid, &commits, entry) {
10270 
10271 		commit_id = &qid->id;
10272 		parent_id = pid ? &pid->id : yca_id;
10273 		pid = qid;
10274 
10275 		memset(&upa, 0, sizeof(upa));
10276 		error = got_worktree_rebase_merge_files(&merged_paths,
10277 		    worktree, fileindex, parent_id, commit_id, repo,
10278 		    update_progress, &upa, check_cancelled, NULL);
10279 		if (error)
10280 			goto done;
10281 
10282 		print_merge_progress_stats(&upa);
10283 		if (upa.conflicts > 0 || upa.missing > 0 ||
10284 		    upa.not_deleted > 0 || upa.unversioned > 0) {
10285 			if (upa.conflicts > 0) {
10286 				error = show_rebase_merge_conflict(&qid->id,
10287 				    repo);
10288 				if (error)
10289 					goto done;
10290 			}
10291 			got_worktree_rebase_pathlist_free(&merged_paths);
10292 			break;
10293 		}
10294 
10295 		error = rebase_commit(&merged_paths, worktree, fileindex,
10296 		    tmp_branch, commit_id, repo);
10297 		got_worktree_rebase_pathlist_free(&merged_paths);
10298 		if (error)
10299 			goto done;
10300 	}
10301 
10302 	if (upa.conflicts > 0 || upa.missing > 0 ||
10303 	    upa.not_deleted > 0 || upa.unversioned > 0) {
10304 		error = got_worktree_rebase_postpone(worktree, fileindex);
10305 		if (error)
10306 			goto done;
10307 		if (upa.conflicts > 0 && upa.missing == 0 &&
10308 		    upa.not_deleted == 0 && upa.unversioned == 0) {
10309 			error = got_error_msg(GOT_ERR_CONFLICTS,
10310 			    "conflicts must be resolved before rebasing "
10311 			    "can continue");
10312 		} else if (upa.conflicts > 0) {
10313 			error = got_error_msg(GOT_ERR_CONFLICTS,
10314 			    "conflicts must be resolved before rebasing "
10315 			    "can continue; changes destined for some "
10316 			    "files were not yet merged and should be "
10317 			    "merged manually if required before the "
10318 			    "rebase operation is continued");
10319 		} else {
10320 			error = got_error_msg(GOT_ERR_CONFLICTS,
10321 			    "changes destined for some files were not "
10322 			    "yet merged and should be merged manually "
10323 			    "if required before the rebase operation "
10324 			    "is continued");
10325 		}
10326 	} else
10327 		error = rebase_complete(worktree, fileindex, branch,
10328 		    new_base_branch, tmp_branch, repo, create_backup);
10329 done:
10330 	got_object_id_queue_free(&commits);
10331 	free(branch_head_commit_id);
10332 	free(resume_commit_id);
10333 	free(yca_id);
10334 	if (commit)
10335 		got_object_commit_close(commit);
10336 	if (branch)
10337 		got_ref_close(branch);
10338 	if (new_base_branch)
10339 		got_ref_close(new_base_branch);
10340 	if (tmp_branch)
10341 		got_ref_close(tmp_branch);
10342 	if (worktree)
10343 		got_worktree_close(worktree);
10344 	if (repo) {
10345 		const struct got_error *close_err = got_repo_close(repo);
10346 		if (error == NULL)
10347 			error = close_err;
10348 	}
10349 	if (pack_fds) {
10350 		const struct got_error *pack_err =
10351 		    got_repo_pack_fds_close(pack_fds);
10352 		if (error == NULL)
10353 			error = pack_err;
10354 	}
10355 	return error;
10356 }
10357 
10358 __dead static void
10359 usage_histedit(void)
10360 {
10361 	fprintf(stderr, "usage: %s histedit [-a] [-c] [-e] [-f] "
10362 	    "[-F histedit-script] [-m] [-l] [-X] [branch]\n",
10363 	    getprogname());
10364 	exit(1);
10365 }
10366 
10367 #define GOT_HISTEDIT_PICK 'p'
10368 #define GOT_HISTEDIT_EDIT 'e'
10369 #define GOT_HISTEDIT_FOLD 'f'
10370 #define GOT_HISTEDIT_DROP 'd'
10371 #define GOT_HISTEDIT_MESG 'm'
10372 
10373 static const struct got_histedit_cmd {
10374 	unsigned char code;
10375 	const char *name;
10376 	const char *desc;
10377 } got_histedit_cmds[] = {
10378 	{ GOT_HISTEDIT_PICK, "pick", "use commit" },
10379 	{ GOT_HISTEDIT_EDIT, "edit", "use commit but stop for amending" },
10380 	{ GOT_HISTEDIT_FOLD, "fold", "combine with next commit that will "
10381 	    "be used" },
10382 	{ GOT_HISTEDIT_DROP, "drop", "remove commit from history" },
10383 	{ GOT_HISTEDIT_MESG, "mesg",
10384 	    "single-line log message for commit above (open editor if empty)" },
10385 };
10386 
10387 struct got_histedit_list_entry {
10388 	TAILQ_ENTRY(got_histedit_list_entry) entry;
10389 	struct got_object_id *commit_id;
10390 	const struct got_histedit_cmd *cmd;
10391 	char *logmsg;
10392 };
10393 TAILQ_HEAD(got_histedit_list, got_histedit_list_entry);
10394 
10395 static const struct got_error *
10396 histedit_write_commit(struct got_object_id *commit_id, const char *cmdname,
10397     FILE *f, struct got_repository *repo)
10398 {
10399 	const struct got_error *err = NULL;
10400 	char *logmsg = NULL, *id_str = NULL;
10401 	struct got_commit_object *commit = NULL;
10402 	int n;
10403 
10404 	err = got_object_open_as_commit(&commit, repo, commit_id);
10405 	if (err)
10406 		goto done;
10407 
10408 	err = get_short_logmsg(&logmsg, 34, commit);
10409 	if (err)
10410 		goto done;
10411 
10412 	err = got_object_id_str(&id_str, commit_id);
10413 	if (err)
10414 		goto done;
10415 
10416 	n = fprintf(f, "%s %s %s\n", cmdname, id_str, logmsg);
10417 	if (n < 0)
10418 		err = got_ferror(f, GOT_ERR_IO);
10419 done:
10420 	if (commit)
10421 		got_object_commit_close(commit);
10422 	free(id_str);
10423 	free(logmsg);
10424 	return err;
10425 }
10426 
10427 static const struct got_error *
10428 histedit_write_commit_list(struct got_object_id_queue *commits,
10429     FILE *f, int edit_logmsg_only, int fold_only, int edit_only,
10430     struct got_repository *repo)
10431 {
10432 	const struct got_error *err = NULL;
10433 	struct got_object_qid *qid;
10434 	const char *histedit_cmd = NULL;
10435 
10436 	if (STAILQ_EMPTY(commits))
10437 		return got_error(GOT_ERR_EMPTY_HISTEDIT);
10438 
10439 	STAILQ_FOREACH(qid, commits, entry) {
10440 		histedit_cmd = got_histedit_cmds[0].name;
10441 		if (edit_only)
10442 			histedit_cmd = "edit";
10443 		else if (fold_only && STAILQ_NEXT(qid, entry) != NULL)
10444 			histedit_cmd = "fold";
10445 		err = histedit_write_commit(&qid->id, histedit_cmd, f, repo);
10446 		if (err)
10447 			break;
10448 		if (edit_logmsg_only) {
10449 			int n = fprintf(f, "%c\n", GOT_HISTEDIT_MESG);
10450 			if (n < 0) {
10451 				err = got_ferror(f, GOT_ERR_IO);
10452 				break;
10453 			}
10454 		}
10455 	}
10456 
10457 	return err;
10458 }
10459 
10460 static const struct got_error *
10461 write_cmd_list(FILE *f, const char *branch_name,
10462     struct got_object_id_queue *commits)
10463 {
10464 	const struct got_error *err = NULL;
10465 	size_t i;
10466 	int n;
10467 	char *id_str;
10468 	struct got_object_qid *qid;
10469 
10470 	qid = STAILQ_FIRST(commits);
10471 	err = got_object_id_str(&id_str, &qid->id);
10472 	if (err)
10473 		return err;
10474 
10475 	n = fprintf(f,
10476 	    "# Editing the history of branch '%s' starting at\n"
10477 	    "# commit %s\n"
10478 	    "# Commits will be processed in order from top to "
10479 	    "bottom of this file.\n", branch_name, id_str);
10480 	if (n < 0) {
10481 		err = got_ferror(f, GOT_ERR_IO);
10482 		goto done;
10483 	}
10484 
10485 	n = fprintf(f, "# Available histedit commands:\n");
10486 	if (n < 0) {
10487 		err = got_ferror(f, GOT_ERR_IO);
10488 		goto done;
10489 	}
10490 
10491 	for (i = 0; i < nitems(got_histedit_cmds); i++) {
10492 		const struct got_histedit_cmd *cmd = &got_histedit_cmds[i];
10493 		n = fprintf(f, "#   %s (%c): %s\n", cmd->name, cmd->code,
10494 		    cmd->desc);
10495 		if (n < 0) {
10496 			err = got_ferror(f, GOT_ERR_IO);
10497 			break;
10498 		}
10499 	}
10500 done:
10501 	free(id_str);
10502 	return err;
10503 }
10504 
10505 static const struct got_error *
10506 histedit_syntax_error(int lineno)
10507 {
10508 	static char msg[42];
10509 	int ret;
10510 
10511 	ret = snprintf(msg, sizeof(msg), "histedit syntax error on line %d",
10512 	    lineno);
10513 	if (ret == -1 || ret >= sizeof(msg))
10514 		return got_error(GOT_ERR_HISTEDIT_SYNTAX);
10515 
10516 	return got_error_msg(GOT_ERR_HISTEDIT_SYNTAX, msg);
10517 }
10518 
10519 static const struct got_error *
10520 append_folded_commit_msg(char **new_msg, struct got_histedit_list_entry *hle,
10521     char *logmsg, struct got_repository *repo)
10522 {
10523 	const struct got_error *err;
10524 	struct got_commit_object *folded_commit = NULL;
10525 	char *id_str, *folded_logmsg = NULL;
10526 
10527 	err = got_object_id_str(&id_str, hle->commit_id);
10528 	if (err)
10529 		return err;
10530 
10531 	err = got_object_open_as_commit(&folded_commit, repo, hle->commit_id);
10532 	if (err)
10533 		goto done;
10534 
10535 	err = got_object_commit_get_logmsg(&folded_logmsg, folded_commit);
10536 	if (err)
10537 		goto done;
10538 	if (asprintf(new_msg, "%s%s# log message of folded commit %s: %s",
10539 	    logmsg ? logmsg : "", logmsg ? "\n" : "", id_str,
10540 	    folded_logmsg) == -1) {
10541 		err = got_error_from_errno("asprintf");
10542 	}
10543 done:
10544 	if (folded_commit)
10545 		got_object_commit_close(folded_commit);
10546 	free(id_str);
10547 	free(folded_logmsg);
10548 	return err;
10549 }
10550 
10551 static struct got_histedit_list_entry *
10552 get_folded_commits(struct got_histedit_list_entry *hle)
10553 {
10554 	struct got_histedit_list_entry *prev, *folded = NULL;
10555 
10556 	prev = TAILQ_PREV(hle, got_histedit_list, entry);
10557 	while (prev && (prev->cmd->code == GOT_HISTEDIT_FOLD ||
10558 	    prev->cmd->code == GOT_HISTEDIT_DROP)) {
10559 		if (prev->cmd->code == GOT_HISTEDIT_FOLD)
10560 			folded = prev;
10561 		prev = TAILQ_PREV(prev, got_histedit_list, entry);
10562 	}
10563 
10564 	return folded;
10565 }
10566 
10567 static const struct got_error *
10568 histedit_edit_logmsg(struct got_histedit_list_entry *hle,
10569     struct got_repository *repo)
10570 {
10571 	char *logmsg_path = NULL, *id_str = NULL, *orig_logmsg = NULL;
10572 	char *logmsg = NULL, *new_msg = NULL, *editor = NULL;
10573 	const struct got_error *err = NULL;
10574 	struct got_commit_object *commit = NULL;
10575 	int logmsg_len;
10576 	int fd;
10577 	struct got_histedit_list_entry *folded = NULL;
10578 
10579 	err = got_object_open_as_commit(&commit, repo, hle->commit_id);
10580 	if (err)
10581 		return err;
10582 
10583 	folded = get_folded_commits(hle);
10584 	if (folded) {
10585 		while (folded != hle) {
10586 			if (folded->cmd->code == GOT_HISTEDIT_DROP) {
10587 				folded = TAILQ_NEXT(folded, entry);
10588 				continue;
10589 			}
10590 			err = append_folded_commit_msg(&new_msg, folded,
10591 			    logmsg, repo);
10592 			if (err)
10593 				goto done;
10594 			free(logmsg);
10595 			logmsg = new_msg;
10596 			folded = TAILQ_NEXT(folded, entry);
10597 		}
10598 	}
10599 
10600 	err = got_object_id_str(&id_str, hle->commit_id);
10601 	if (err)
10602 		goto done;
10603 	err = got_object_commit_get_logmsg(&orig_logmsg, commit);
10604 	if (err)
10605 		goto done;
10606 	logmsg_len = asprintf(&new_msg,
10607 	    "%s\n# original log message of commit %s: %s",
10608 	    logmsg ? logmsg : "", id_str, orig_logmsg);
10609 	if (logmsg_len == -1) {
10610 		err = got_error_from_errno("asprintf");
10611 		goto done;
10612 	}
10613 	free(logmsg);
10614 	logmsg = new_msg;
10615 
10616 	err = got_object_id_str(&id_str, hle->commit_id);
10617 	if (err)
10618 		goto done;
10619 
10620 	err = got_opentemp_named_fd(&logmsg_path, &fd,
10621 	    GOT_TMPDIR_STR "/got-logmsg");
10622 	if (err)
10623 		goto done;
10624 
10625 	write(fd, logmsg, logmsg_len);
10626 	close(fd);
10627 
10628 	err = get_editor(&editor);
10629 	if (err)
10630 		goto done;
10631 
10632 	err = edit_logmsg(&hle->logmsg, editor, logmsg_path, logmsg,
10633 	    logmsg_len, 0);
10634 	if (err) {
10635 		if (err->code != GOT_ERR_COMMIT_MSG_EMPTY)
10636 			goto done;
10637 		err = NULL;
10638 		hle->logmsg = strdup(new_msg);
10639 		if (hle->logmsg == NULL)
10640 			err = got_error_from_errno("strdup");
10641 	}
10642 done:
10643 	if (logmsg_path && unlink(logmsg_path) != 0 && err == NULL)
10644 		err = got_error_from_errno2("unlink", logmsg_path);
10645 	free(logmsg_path);
10646 	free(logmsg);
10647 	free(orig_logmsg);
10648 	free(editor);
10649 	if (commit)
10650 		got_object_commit_close(commit);
10651 	return err;
10652 }
10653 
10654 static const struct got_error *
10655 histedit_parse_list(struct got_histedit_list *histedit_cmds,
10656     FILE *f, struct got_repository *repo)
10657 {
10658 	const struct got_error *err = NULL;
10659 	char *line = NULL, *p, *end;
10660 	size_t i, size;
10661 	ssize_t len;
10662 	int lineno = 0;
10663 	const struct got_histedit_cmd *cmd;
10664 	struct got_object_id *commit_id = NULL;
10665 	struct got_histedit_list_entry *hle = NULL;
10666 
10667 	for (;;) {
10668 		len = getline(&line, &size, f);
10669 		if (len == -1) {
10670 			const struct got_error *getline_err;
10671 			if (feof(f))
10672 				break;
10673 			getline_err = got_error_from_errno("getline");
10674 			err = got_ferror(f, getline_err->code);
10675 			break;
10676 		}
10677 		lineno++;
10678 		p = line;
10679 		while (isspace((unsigned char)p[0]))
10680 			p++;
10681 		if (p[0] == '#' || p[0] == '\0') {
10682 			free(line);
10683 			line = NULL;
10684 			continue;
10685 		}
10686 		cmd = NULL;
10687 		for (i = 0; i < nitems(got_histedit_cmds); i++) {
10688 			cmd = &got_histedit_cmds[i];
10689 			if (strncmp(cmd->name, p, strlen(cmd->name)) == 0 &&
10690 			    isspace((unsigned char)p[strlen(cmd->name)])) {
10691 				p += strlen(cmd->name);
10692 				break;
10693 			}
10694 			if (p[0] == cmd->code && isspace((unsigned char)p[1])) {
10695 				p++;
10696 				break;
10697 			}
10698 		}
10699 		if (i == nitems(got_histedit_cmds)) {
10700 			err = histedit_syntax_error(lineno);
10701 			break;
10702 		}
10703 		while (isspace((unsigned char)p[0]))
10704 			p++;
10705 		if (cmd->code == GOT_HISTEDIT_MESG) {
10706 			if (hle == NULL || hle->logmsg != NULL) {
10707 				err = got_error(GOT_ERR_HISTEDIT_CMD);
10708 				break;
10709 			}
10710 			if (p[0] == '\0') {
10711 				err = histedit_edit_logmsg(hle, repo);
10712 				if (err)
10713 					break;
10714 			} else {
10715 				hle->logmsg = strdup(p);
10716 				if (hle->logmsg == NULL) {
10717 					err = got_error_from_errno("strdup");
10718 					break;
10719 				}
10720 			}
10721 			free(line);
10722 			line = NULL;
10723 			continue;
10724 		} else {
10725 			end = p;
10726 			while (end[0] && !isspace((unsigned char)end[0]))
10727 				end++;
10728 			*end = '\0';
10729 
10730 			err = got_object_resolve_id_str(&commit_id, repo, p);
10731 			if (err) {
10732 				/* override error code */
10733 				err = histedit_syntax_error(lineno);
10734 				break;
10735 			}
10736 		}
10737 		hle = malloc(sizeof(*hle));
10738 		if (hle == NULL) {
10739 			err = got_error_from_errno("malloc");
10740 			break;
10741 		}
10742 		hle->cmd = cmd;
10743 		hle->commit_id = commit_id;
10744 		hle->logmsg = NULL;
10745 		commit_id = NULL;
10746 		free(line);
10747 		line = NULL;
10748 		TAILQ_INSERT_TAIL(histedit_cmds, hle, entry);
10749 	}
10750 
10751 	free(line);
10752 	free(commit_id);
10753 	return err;
10754 }
10755 
10756 static const struct got_error *
10757 histedit_check_script(struct got_histedit_list *histedit_cmds,
10758     struct got_object_id_queue *commits, struct got_repository *repo)
10759 {
10760 	const struct got_error *err = NULL;
10761 	struct got_object_qid *qid;
10762 	struct got_histedit_list_entry *hle;
10763 	static char msg[92];
10764 	char *id_str;
10765 
10766 	if (TAILQ_EMPTY(histedit_cmds))
10767 		return got_error_msg(GOT_ERR_EMPTY_HISTEDIT,
10768 		    "histedit script contains no commands");
10769 	if (STAILQ_EMPTY(commits))
10770 		return got_error(GOT_ERR_EMPTY_HISTEDIT);
10771 
10772 	TAILQ_FOREACH(hle, histedit_cmds, entry) {
10773 		struct got_histedit_list_entry *hle2;
10774 		TAILQ_FOREACH(hle2, histedit_cmds, entry) {
10775 			if (hle == hle2)
10776 				continue;
10777 			if (got_object_id_cmp(hle->commit_id,
10778 			    hle2->commit_id) != 0)
10779 				continue;
10780 			err = got_object_id_str(&id_str, hle->commit_id);
10781 			if (err)
10782 				return err;
10783 			snprintf(msg, sizeof(msg), "commit %s is listed "
10784 			    "more than once in histedit script", id_str);
10785 			free(id_str);
10786 			return got_error_msg(GOT_ERR_HISTEDIT_CMD, msg);
10787 		}
10788 	}
10789 
10790 	STAILQ_FOREACH(qid, commits, entry) {
10791 		TAILQ_FOREACH(hle, histedit_cmds, entry) {
10792 			if (got_object_id_cmp(&qid->id, hle->commit_id) == 0)
10793 				break;
10794 		}
10795 		if (hle == NULL) {
10796 			err = got_object_id_str(&id_str, &qid->id);
10797 			if (err)
10798 				return err;
10799 			snprintf(msg, sizeof(msg),
10800 			    "commit %s missing from histedit script", id_str);
10801 			free(id_str);
10802 			return got_error_msg(GOT_ERR_HISTEDIT_CMD, msg);
10803 		}
10804 	}
10805 
10806 	hle = TAILQ_LAST(histedit_cmds, got_histedit_list);
10807 	if (hle && hle->cmd->code == GOT_HISTEDIT_FOLD)
10808 		return got_error_msg(GOT_ERR_HISTEDIT_CMD,
10809 		    "last commit in histedit script cannot be folded");
10810 
10811 	return NULL;
10812 }
10813 
10814 static const struct got_error *
10815 histedit_run_editor(struct got_histedit_list *histedit_cmds,
10816     const char *path, struct got_object_id_queue *commits,
10817     struct got_repository *repo)
10818 {
10819 	const struct got_error *err = NULL;
10820 	char *editor;
10821 	FILE *f = NULL;
10822 
10823 	err = get_editor(&editor);
10824 	if (err)
10825 		return err;
10826 
10827 	if (spawn_editor(editor, path) == -1) {
10828 		err = got_error_from_errno("failed spawning editor");
10829 		goto done;
10830 	}
10831 
10832 	f = fopen(path, "re");
10833 	if (f == NULL) {
10834 		err = got_error_from_errno("fopen");
10835 		goto done;
10836 	}
10837 	err = histedit_parse_list(histedit_cmds, f, repo);
10838 	if (err)
10839 		goto done;
10840 
10841 	err = histedit_check_script(histedit_cmds, commits, repo);
10842 done:
10843 	if (f && fclose(f) == EOF && err == NULL)
10844 		err = got_error_from_errno("fclose");
10845 	free(editor);
10846 	return err;
10847 }
10848 
10849 static const struct got_error *
10850 histedit_edit_list_retry(struct got_histedit_list *, const struct got_error *,
10851     struct got_object_id_queue *, const char *, const char *,
10852     struct got_repository *);
10853 
10854 static const struct got_error *
10855 histedit_edit_script(struct got_histedit_list *histedit_cmds,
10856     struct got_object_id_queue *commits, const char *branch_name,
10857     int edit_logmsg_only, int fold_only, int edit_only,
10858     struct got_repository *repo)
10859 {
10860 	const struct got_error *err;
10861 	FILE *f = NULL;
10862 	char *path = NULL;
10863 
10864 	err = got_opentemp_named(&path, &f, "got-histedit");
10865 	if (err)
10866 		return err;
10867 
10868 	err = write_cmd_list(f, branch_name, commits);
10869 	if (err)
10870 		goto done;
10871 
10872 	err = histedit_write_commit_list(commits, f, edit_logmsg_only,
10873 	    fold_only, edit_only, repo);
10874 	if (err)
10875 		goto done;
10876 
10877 	if (edit_logmsg_only || fold_only || edit_only) {
10878 		rewind(f);
10879 		err = histedit_parse_list(histedit_cmds, f, repo);
10880 	} else {
10881 		if (fclose(f) == EOF) {
10882 			err = got_error_from_errno("fclose");
10883 			goto done;
10884 		}
10885 		f = NULL;
10886 		err = histedit_run_editor(histedit_cmds, path, commits, repo);
10887 		if (err) {
10888 			if (err->code != GOT_ERR_HISTEDIT_SYNTAX &&
10889 			    err->code != GOT_ERR_HISTEDIT_CMD)
10890 				goto done;
10891 			err = histedit_edit_list_retry(histedit_cmds, err,
10892 			    commits, path, branch_name, repo);
10893 		}
10894 	}
10895 done:
10896 	if (f && fclose(f) == EOF && err == NULL)
10897 		err = got_error_from_errno("fclose");
10898 	if (path && unlink(path) != 0 && err == NULL)
10899 		err = got_error_from_errno2("unlink", path);
10900 	free(path);
10901 	return err;
10902 }
10903 
10904 static const struct got_error *
10905 histedit_save_list(struct got_histedit_list *histedit_cmds,
10906     struct got_worktree *worktree, struct got_repository *repo)
10907 {
10908 	const struct got_error *err = NULL;
10909 	char *path = NULL;
10910 	FILE *f = NULL;
10911 	struct got_histedit_list_entry *hle;
10912 	struct got_commit_object *commit = NULL;
10913 
10914 	err = got_worktree_get_histedit_script_path(&path, worktree);
10915 	if (err)
10916 		return err;
10917 
10918 	f = fopen(path, "we");
10919 	if (f == NULL) {
10920 		err = got_error_from_errno2("fopen", path);
10921 		goto done;
10922 	}
10923 	TAILQ_FOREACH(hle, histedit_cmds, entry) {
10924 		err = histedit_write_commit(hle->commit_id, hle->cmd->name, f,
10925 		    repo);
10926 		if (err)
10927 			break;
10928 
10929 		if (hle->logmsg) {
10930 			int n = fprintf(f, "%c %s\n",
10931 			    GOT_HISTEDIT_MESG, hle->logmsg);
10932 			if (n < 0) {
10933 				err = got_ferror(f, GOT_ERR_IO);
10934 				break;
10935 			}
10936 		}
10937 	}
10938 done:
10939 	if (f && fclose(f) == EOF && err == NULL)
10940 		err = got_error_from_errno("fclose");
10941 	free(path);
10942 	if (commit)
10943 		got_object_commit_close(commit);
10944 	return err;
10945 }
10946 
10947 static void
10948 histedit_free_list(struct got_histedit_list *histedit_cmds)
10949 {
10950 	struct got_histedit_list_entry *hle;
10951 
10952 	while ((hle = TAILQ_FIRST(histedit_cmds))) {
10953 		TAILQ_REMOVE(histedit_cmds, hle, entry);
10954 		free(hle);
10955 	}
10956 }
10957 
10958 static const struct got_error *
10959 histedit_load_list(struct got_histedit_list *histedit_cmds,
10960     const char *path, struct got_repository *repo)
10961 {
10962 	const struct got_error *err = NULL;
10963 	FILE *f = NULL;
10964 
10965 	f = fopen(path, "re");
10966 	if (f == NULL) {
10967 		err = got_error_from_errno2("fopen", path);
10968 		goto done;
10969 	}
10970 
10971 	err = histedit_parse_list(histedit_cmds, f, repo);
10972 done:
10973 	if (f && fclose(f) == EOF && err == NULL)
10974 		err = got_error_from_errno("fclose");
10975 	return err;
10976 }
10977 
10978 static const struct got_error *
10979 histedit_edit_list_retry(struct got_histedit_list *histedit_cmds,
10980     const struct got_error *edit_err, struct got_object_id_queue *commits,
10981     const char *path, const char *branch_name, struct got_repository *repo)
10982 {
10983 	const struct got_error *err = NULL, *prev_err = edit_err;
10984 	int resp = ' ';
10985 
10986 	while (resp != 'c' && resp != 'r' && resp != 'a') {
10987 		printf("%s: %s\n(c)ontinue editing, (r)estart editing, "
10988 		    "or (a)bort: ", getprogname(), prev_err->msg);
10989 		resp = getchar();
10990 		if (resp == '\n')
10991 			resp = getchar();
10992 		if (resp == 'c') {
10993 			histedit_free_list(histedit_cmds);
10994 			err = histedit_run_editor(histedit_cmds, path, commits,
10995 			    repo);
10996 			if (err) {
10997 				if (err->code != GOT_ERR_HISTEDIT_SYNTAX &&
10998 				    err->code != GOT_ERR_HISTEDIT_CMD)
10999 					break;
11000 				prev_err = err;
11001 				resp = ' ';
11002 				continue;
11003 			}
11004 			break;
11005 		} else if (resp == 'r') {
11006 			histedit_free_list(histedit_cmds);
11007 			err = histedit_edit_script(histedit_cmds,
11008 			    commits, branch_name, 0, 0, 0, repo);
11009 			if (err) {
11010 				if (err->code != GOT_ERR_HISTEDIT_SYNTAX &&
11011 				    err->code != GOT_ERR_HISTEDIT_CMD)
11012 					break;
11013 				prev_err = err;
11014 				resp = ' ';
11015 				continue;
11016 			}
11017 			break;
11018 		} else if (resp == 'a') {
11019 			err = got_error(GOT_ERR_HISTEDIT_CANCEL);
11020 			break;
11021 		} else
11022 			printf("invalid response '%c'\n", resp);
11023 	}
11024 
11025 	return err;
11026 }
11027 
11028 static const struct got_error *
11029 histedit_complete(struct got_worktree *worktree,
11030     struct got_fileindex *fileindex, struct got_reference *tmp_branch,
11031     struct got_reference *branch, struct got_repository *repo)
11032 {
11033 	printf("Switching work tree to %s\n",
11034 	    got_ref_get_symref_target(branch));
11035 	return got_worktree_histedit_complete(worktree, fileindex, tmp_branch,
11036 	    branch, repo);
11037 }
11038 
11039 static const struct got_error *
11040 show_histedit_progress(struct got_commit_object *commit,
11041     struct got_histedit_list_entry *hle, struct got_object_id *new_id)
11042 {
11043 	const struct got_error *err;
11044 	char *old_id_str = NULL, *new_id_str = NULL, *logmsg = NULL;
11045 
11046 	err = got_object_id_str(&old_id_str, hle->commit_id);
11047 	if (err)
11048 		goto done;
11049 
11050 	if (new_id) {
11051 		err = got_object_id_str(&new_id_str, new_id);
11052 		if (err)
11053 			goto done;
11054 	}
11055 
11056 	old_id_str[12] = '\0';
11057 	if (new_id_str)
11058 		new_id_str[12] = '\0';
11059 
11060 	if (hle->logmsg) {
11061 		logmsg = strdup(hle->logmsg);
11062 		if (logmsg == NULL) {
11063 			err = got_error_from_errno("strdup");
11064 			goto done;
11065 		}
11066 		trim_logmsg(logmsg, 42);
11067 	} else {
11068 		err = get_short_logmsg(&logmsg, 42, commit);
11069 		if (err)
11070 			goto done;
11071 	}
11072 
11073 	switch (hle->cmd->code) {
11074 	case GOT_HISTEDIT_PICK:
11075 	case GOT_HISTEDIT_EDIT:
11076 		printf("%s -> %s: %s\n", old_id_str,
11077 		    new_id_str ? new_id_str : "no-op change", logmsg);
11078 		break;
11079 	case GOT_HISTEDIT_DROP:
11080 	case GOT_HISTEDIT_FOLD:
11081 		printf("%s ->  %s commit: %s\n", old_id_str, hle->cmd->name,
11082 		    logmsg);
11083 		break;
11084 	default:
11085 		break;
11086 	}
11087 done:
11088 	free(old_id_str);
11089 	free(new_id_str);
11090 	return err;
11091 }
11092 
11093 static const struct got_error *
11094 histedit_commit(struct got_pathlist_head *merged_paths,
11095     struct got_worktree *worktree, struct got_fileindex *fileindex,
11096     struct got_reference *tmp_branch, struct got_histedit_list_entry *hle,
11097     struct got_repository *repo)
11098 {
11099 	const struct got_error *err;
11100 	struct got_commit_object *commit;
11101 	struct got_object_id *new_commit_id;
11102 
11103 	if ((hle->cmd->code == GOT_HISTEDIT_EDIT || get_folded_commits(hle))
11104 	    && hle->logmsg == NULL) {
11105 		err = histedit_edit_logmsg(hle, repo);
11106 		if (err)
11107 			return err;
11108 	}
11109 
11110 	err = got_object_open_as_commit(&commit, repo, hle->commit_id);
11111 	if (err)
11112 		return err;
11113 
11114 	err = got_worktree_histedit_commit(&new_commit_id, merged_paths,
11115 	    worktree, fileindex, tmp_branch, commit, hle->commit_id,
11116 	    hle->logmsg, repo);
11117 	if (err) {
11118 		if (err->code != GOT_ERR_COMMIT_NO_CHANGES)
11119 			goto done;
11120 		err = show_histedit_progress(commit, hle, NULL);
11121 	} else {
11122 		err = show_histedit_progress(commit, hle, new_commit_id);
11123 		free(new_commit_id);
11124 	}
11125 done:
11126 	got_object_commit_close(commit);
11127 	return err;
11128 }
11129 
11130 static const struct got_error *
11131 histedit_skip_commit(struct got_histedit_list_entry *hle,
11132     struct got_worktree *worktree, struct got_repository *repo)
11133 {
11134 	const struct got_error *error;
11135 	struct got_commit_object *commit;
11136 
11137 	error = got_worktree_histedit_skip_commit(worktree, hle->commit_id,
11138 	    repo);
11139 	if (error)
11140 		return error;
11141 
11142 	error = got_object_open_as_commit(&commit, repo, hle->commit_id);
11143 	if (error)
11144 		return error;
11145 
11146 	error = show_histedit_progress(commit, hle, NULL);
11147 	got_object_commit_close(commit);
11148 	return error;
11149 }
11150 
11151 static const struct got_error *
11152 check_local_changes(void *arg, unsigned char status,
11153     unsigned char staged_status, const char *path,
11154     struct got_object_id *blob_id, struct got_object_id *staged_blob_id,
11155     struct got_object_id *commit_id, int dirfd, const char *de_name)
11156 {
11157 	int *have_local_changes = arg;
11158 
11159 	switch (status) {
11160 	case GOT_STATUS_ADD:
11161 	case GOT_STATUS_DELETE:
11162 	case GOT_STATUS_MODIFY:
11163 	case GOT_STATUS_CONFLICT:
11164 		*have_local_changes = 1;
11165 		return got_error(GOT_ERR_CANCELLED);
11166 	default:
11167 		break;
11168 	}
11169 
11170 	switch (staged_status) {
11171 	case GOT_STATUS_ADD:
11172 	case GOT_STATUS_DELETE:
11173 	case GOT_STATUS_MODIFY:
11174 		*have_local_changes = 1;
11175 		return got_error(GOT_ERR_CANCELLED);
11176 	default:
11177 		break;
11178 	}
11179 
11180 	return NULL;
11181 }
11182 
11183 static const struct got_error *
11184 cmd_histedit(int argc, char *argv[])
11185 {
11186 	const struct got_error *error = NULL;
11187 	struct got_worktree *worktree = NULL;
11188 	struct got_fileindex *fileindex = NULL;
11189 	struct got_repository *repo = NULL;
11190 	char *cwd = NULL;
11191 	struct got_reference *branch = NULL;
11192 	struct got_reference *tmp_branch = NULL;
11193 	struct got_object_id *resume_commit_id = NULL;
11194 	struct got_object_id *base_commit_id = NULL;
11195 	struct got_object_id *head_commit_id = NULL;
11196 	struct got_commit_object *commit = NULL;
11197 	int ch, rebase_in_progress = 0, merge_in_progress = 0;
11198 	struct got_update_progress_arg upa;
11199 	int edit_in_progress = 0, abort_edit = 0, continue_edit = 0;
11200 	int edit_logmsg_only = 0, fold_only = 0, edit_only = 0;
11201 	int list_backups = 0, delete_backups = 0;
11202 	const char *edit_script_path = NULL;
11203 	struct got_object_id_queue commits;
11204 	struct got_pathlist_head merged_paths;
11205 	const struct got_object_id_queue *parent_ids;
11206 	struct got_object_qid *pid;
11207 	struct got_histedit_list histedit_cmds;
11208 	struct got_histedit_list_entry *hle;
11209 	int *pack_fds = NULL;
11210 
11211 	STAILQ_INIT(&commits);
11212 	TAILQ_INIT(&histedit_cmds);
11213 	TAILQ_INIT(&merged_paths);
11214 	memset(&upa, 0, sizeof(upa));
11215 
11216 	while ((ch = getopt(argc, argv, "acefF:mlX")) != -1) {
11217 		switch (ch) {
11218 		case 'a':
11219 			abort_edit = 1;
11220 			break;
11221 		case 'c':
11222 			continue_edit = 1;
11223 			break;
11224 		case 'e':
11225 			edit_only = 1;
11226 			break;
11227 		case 'f':
11228 			fold_only = 1;
11229 			break;
11230 		case 'F':
11231 			edit_script_path = optarg;
11232 			break;
11233 		case 'm':
11234 			edit_logmsg_only = 1;
11235 			break;
11236 		case 'l':
11237 			list_backups = 1;
11238 			break;
11239 		case 'X':
11240 			delete_backups = 1;
11241 			break;
11242 		default:
11243 			usage_histedit();
11244 			/* NOTREACHED */
11245 		}
11246 	}
11247 
11248 	argc -= optind;
11249 	argv += optind;
11250 
11251 #ifndef PROFILE
11252 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
11253 	    "unveil", NULL) == -1)
11254 		err(1, "pledge");
11255 #endif
11256 	if (abort_edit && continue_edit)
11257 		option_conflict('a', 'c');
11258 	if (edit_script_path && edit_logmsg_only)
11259 		option_conflict('F', 'm');
11260 	if (abort_edit && edit_logmsg_only)
11261 		option_conflict('a', 'm');
11262 	if (continue_edit && edit_logmsg_only)
11263 		option_conflict('c', 'm');
11264 	if (abort_edit && fold_only)
11265 		option_conflict('a', 'f');
11266 	if (continue_edit && fold_only)
11267 		option_conflict('c', 'f');
11268 	if (fold_only && edit_logmsg_only)
11269 		option_conflict('f', 'm');
11270 	if (edit_script_path && fold_only)
11271 		option_conflict('F', 'f');
11272 	if (abort_edit && edit_only)
11273 		option_conflict('a', 'e');
11274 	if (continue_edit && edit_only)
11275 		option_conflict('c', 'e');
11276 	if (edit_only && edit_logmsg_only)
11277 		option_conflict('e', 'm');
11278 	if (edit_script_path && edit_only)
11279 		option_conflict('F', 'e');
11280 	if (list_backups) {
11281 		if (abort_edit)
11282 			option_conflict('l', 'a');
11283 		if (continue_edit)
11284 			option_conflict('l', 'c');
11285 		if (edit_script_path)
11286 			option_conflict('l', 'F');
11287 		if (edit_logmsg_only)
11288 			option_conflict('l', 'm');
11289 		if (fold_only)
11290 			option_conflict('l', 'f');
11291 		if (edit_only)
11292 			option_conflict('l', 'e');
11293 		if (delete_backups)
11294 			option_conflict('l', 'X');
11295 		if (argc != 0 && argc != 1)
11296 			usage_histedit();
11297 	} else if (delete_backups) {
11298 		if (abort_edit)
11299 			option_conflict('X', 'a');
11300 		if (continue_edit)
11301 			option_conflict('X', 'c');
11302 		if (edit_script_path)
11303 			option_conflict('X', 'F');
11304 		if (edit_logmsg_only)
11305 			option_conflict('X', 'm');
11306 		if (fold_only)
11307 			option_conflict('X', 'f');
11308 		if (edit_only)
11309 			option_conflict('X', 'e');
11310 		if (list_backups)
11311 			option_conflict('X', 'l');
11312 		if (argc != 0 && argc != 1)
11313 			usage_histedit();
11314 	} else if (argc != 0)
11315 		usage_histedit();
11316 
11317 	/*
11318 	 * This command cannot apply unveil(2) in all cases because the
11319 	 * user may choose to run an editor to edit the histedit script
11320 	 * and to edit individual commit log messages.
11321 	 * unveil(2) traverses exec(2); if an editor is used we have to
11322 	 * apply unveil after edit script and log messages have been written.
11323 	 * XXX TODO: Make use of unveil(2) where possible.
11324 	 */
11325 
11326 	cwd = getcwd(NULL, 0);
11327 	if (cwd == NULL) {
11328 		error = got_error_from_errno("getcwd");
11329 		goto done;
11330 	}
11331 
11332 	error = got_repo_pack_fds_open(&pack_fds);
11333 	if (error != NULL)
11334 		goto done;
11335 
11336 	error = got_worktree_open(&worktree, cwd);
11337 	if (error) {
11338 		if (list_backups || delete_backups) {
11339 			if (error->code != GOT_ERR_NOT_WORKTREE)
11340 				goto done;
11341 		} else {
11342 			if (error->code == GOT_ERR_NOT_WORKTREE)
11343 				error = wrap_not_worktree_error(error,
11344 				    "histedit", cwd);
11345 			goto done;
11346 		}
11347 	}
11348 
11349 	if (list_backups || delete_backups) {
11350 		error = got_repo_open(&repo,
11351 		    worktree ? got_worktree_get_repo_path(worktree) : cwd,
11352 		    NULL, pack_fds);
11353 		if (error != NULL)
11354 			goto done;
11355 		error = apply_unveil(got_repo_get_path(repo), 0,
11356 		    worktree ? got_worktree_get_root_path(worktree) : NULL);
11357 		if (error)
11358 			goto done;
11359 		error = process_backup_refs(
11360 		    GOT_WORKTREE_HISTEDIT_BACKUP_REF_PREFIX,
11361 		    argc == 1 ? argv[0] : NULL, delete_backups, repo);
11362 		goto done; /* nothing else to do */
11363 	}
11364 
11365 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
11366 	    NULL, pack_fds);
11367 	if (error != NULL)
11368 		goto done;
11369 
11370 	error = got_worktree_rebase_in_progress(&rebase_in_progress, worktree);
11371 	if (error)
11372 		goto done;
11373 	if (rebase_in_progress) {
11374 		error = got_error(GOT_ERR_REBASING);
11375 		goto done;
11376 	}
11377 
11378 	error = got_worktree_merge_in_progress(&merge_in_progress, worktree,
11379 	    repo);
11380 	if (error)
11381 		goto done;
11382 	if (merge_in_progress) {
11383 		error = got_error(GOT_ERR_MERGE_BUSY);
11384 		goto done;
11385 	}
11386 
11387 	error = got_worktree_histedit_in_progress(&edit_in_progress, worktree);
11388 	if (error)
11389 		goto done;
11390 
11391 	if (edit_in_progress && edit_logmsg_only) {
11392 		error = got_error_msg(GOT_ERR_HISTEDIT_BUSY,
11393 		    "histedit operation is in progress in this "
11394 		    "work tree and must be continued or aborted "
11395 		    "before the -m option can be used");
11396 		goto done;
11397 	}
11398 	if (edit_in_progress && fold_only) {
11399 		error = got_error_msg(GOT_ERR_HISTEDIT_BUSY,
11400 		    "histedit operation is in progress in this "
11401 		    "work tree and must be continued or aborted "
11402 		    "before the -f option can be used");
11403 		goto done;
11404 	}
11405 	if (edit_in_progress && edit_only) {
11406 		error = got_error_msg(GOT_ERR_HISTEDIT_BUSY,
11407 		    "histedit operation is in progress in this "
11408 		    "work tree and must be continued or aborted "
11409 		    "before the -e option can be used");
11410 		goto done;
11411 	}
11412 
11413 	if (edit_in_progress && abort_edit) {
11414 		error = got_worktree_histedit_continue(&resume_commit_id,
11415 		    &tmp_branch, &branch, &base_commit_id, &fileindex,
11416 		    worktree, repo);
11417 		if (error)
11418 			goto done;
11419 		printf("Switching work tree to %s\n",
11420 		    got_ref_get_symref_target(branch));
11421 		error = got_worktree_histedit_abort(worktree, fileindex, repo,
11422 		    branch, base_commit_id, abort_progress, &upa);
11423 		if (error)
11424 			goto done;
11425 		printf("Histedit of %s aborted\n",
11426 		    got_ref_get_symref_target(branch));
11427 		print_merge_progress_stats(&upa);
11428 		goto done; /* nothing else to do */
11429 	} else if (abort_edit) {
11430 		error = got_error(GOT_ERR_NOT_HISTEDIT);
11431 		goto done;
11432 	}
11433 
11434 	if (continue_edit) {
11435 		char *path;
11436 
11437 		if (!edit_in_progress) {
11438 			error = got_error(GOT_ERR_NOT_HISTEDIT);
11439 			goto done;
11440 		}
11441 
11442 		error = got_worktree_get_histedit_script_path(&path, worktree);
11443 		if (error)
11444 			goto done;
11445 
11446 		error = histedit_load_list(&histedit_cmds, path, repo);
11447 		free(path);
11448 		if (error)
11449 			goto done;
11450 
11451 		error = got_worktree_histedit_continue(&resume_commit_id,
11452 		    &tmp_branch, &branch, &base_commit_id, &fileindex,
11453 		    worktree, repo);
11454 		if (error)
11455 			goto done;
11456 
11457 		error = got_ref_resolve(&head_commit_id, repo, branch);
11458 		if (error)
11459 			goto done;
11460 
11461 		error = got_object_open_as_commit(&commit, repo,
11462 		    head_commit_id);
11463 		if (error)
11464 			goto done;
11465 		parent_ids = got_object_commit_get_parent_ids(commit);
11466 		pid = STAILQ_FIRST(parent_ids);
11467 		if (pid == NULL) {
11468 			error = got_error(GOT_ERR_EMPTY_HISTEDIT);
11469 			goto done;
11470 		}
11471 		error = collect_commits(&commits, head_commit_id, &pid->id,
11472 		    base_commit_id, got_worktree_get_path_prefix(worktree),
11473 		    GOT_ERR_HISTEDIT_PATH, repo);
11474 		got_object_commit_close(commit);
11475 		commit = NULL;
11476 		if (error)
11477 			goto done;
11478 	} else {
11479 		if (edit_in_progress) {
11480 			error = got_error(GOT_ERR_HISTEDIT_BUSY);
11481 			goto done;
11482 		}
11483 
11484 		error = got_ref_open(&branch, repo,
11485 		    got_worktree_get_head_ref_name(worktree), 0);
11486 		if (error != NULL)
11487 			goto done;
11488 
11489 		if (strncmp(got_ref_get_name(branch), "refs/heads/", 11) != 0) {
11490 			error = got_error_msg(GOT_ERR_COMMIT_BRANCH,
11491 			    "will not edit commit history of a branch outside "
11492 			    "the \"refs/heads/\" reference namespace");
11493 			goto done;
11494 		}
11495 
11496 		error = got_ref_resolve(&head_commit_id, repo, branch);
11497 		got_ref_close(branch);
11498 		branch = NULL;
11499 		if (error)
11500 			goto done;
11501 
11502 		error = got_object_open_as_commit(&commit, repo,
11503 		    head_commit_id);
11504 		if (error)
11505 			goto done;
11506 		parent_ids = got_object_commit_get_parent_ids(commit);
11507 		pid = STAILQ_FIRST(parent_ids);
11508 		if (pid == NULL) {
11509 			error = got_error(GOT_ERR_EMPTY_HISTEDIT);
11510 			goto done;
11511 		}
11512 		error = collect_commits(&commits, head_commit_id, &pid->id,
11513 		    got_worktree_get_base_commit_id(worktree),
11514 		    got_worktree_get_path_prefix(worktree),
11515 		    GOT_ERR_HISTEDIT_PATH, repo);
11516 		got_object_commit_close(commit);
11517 		commit = NULL;
11518 		if (error)
11519 			goto done;
11520 
11521 		if (STAILQ_EMPTY(&commits)) {
11522 			error = got_error(GOT_ERR_EMPTY_HISTEDIT);
11523 			goto done;
11524 		}
11525 
11526 		error = got_worktree_histedit_prepare(&tmp_branch, &branch,
11527 		    &base_commit_id, &fileindex, worktree, repo);
11528 		if (error)
11529 			goto done;
11530 
11531 		if (edit_script_path) {
11532 			error = histedit_load_list(&histedit_cmds,
11533 			    edit_script_path, repo);
11534 			if (error) {
11535 				got_worktree_histedit_abort(worktree, fileindex,
11536 				    repo, branch, base_commit_id,
11537 				    abort_progress, &upa);
11538 				print_merge_progress_stats(&upa);
11539 				goto done;
11540 			}
11541 		} else {
11542 			const char *branch_name;
11543 			branch_name = got_ref_get_symref_target(branch);
11544 			if (strncmp(branch_name, "refs/heads/", 11) == 0)
11545 				branch_name += 11;
11546 			error = histedit_edit_script(&histedit_cmds, &commits,
11547 			    branch_name, edit_logmsg_only, fold_only,
11548 			    edit_only, repo);
11549 			if (error) {
11550 				got_worktree_histedit_abort(worktree, fileindex,
11551 				    repo, branch, base_commit_id,
11552 				    abort_progress, &upa);
11553 				print_merge_progress_stats(&upa);
11554 				goto done;
11555 			}
11556 
11557 		}
11558 
11559 		error = histedit_save_list(&histedit_cmds, worktree,
11560 		    repo);
11561 		if (error) {
11562 			got_worktree_histedit_abort(worktree, fileindex,
11563 			    repo, branch, base_commit_id,
11564 			    abort_progress, &upa);
11565 			print_merge_progress_stats(&upa);
11566 			goto done;
11567 		}
11568 
11569 	}
11570 
11571 	error = histedit_check_script(&histedit_cmds, &commits, repo);
11572 	if (error)
11573 		goto done;
11574 
11575 	TAILQ_FOREACH(hle, &histedit_cmds, entry) {
11576 		if (resume_commit_id) {
11577 			if (got_object_id_cmp(hle->commit_id,
11578 			    resume_commit_id) != 0)
11579 				continue;
11580 
11581 			resume_commit_id = NULL;
11582 			if (hle->cmd->code == GOT_HISTEDIT_DROP ||
11583 			    hle->cmd->code == GOT_HISTEDIT_FOLD) {
11584 				error = histedit_skip_commit(hle, worktree,
11585 				    repo);
11586 				if (error)
11587 					goto done;
11588 			} else {
11589 				struct got_pathlist_head paths;
11590 				int have_changes = 0;
11591 
11592 				TAILQ_INIT(&paths);
11593 				error = got_pathlist_append(&paths, "", NULL);
11594 				if (error)
11595 					goto done;
11596 				error = got_worktree_status(worktree, &paths,
11597 				    repo, 0, check_local_changes, &have_changes,
11598 				    check_cancelled, NULL);
11599 				got_pathlist_free(&paths);
11600 				if (error) {
11601 					if (error->code != GOT_ERR_CANCELLED)
11602 						goto done;
11603 					if (sigint_received || sigpipe_received)
11604 						goto done;
11605 				}
11606 				if (have_changes) {
11607 					error = histedit_commit(NULL, worktree,
11608 					    fileindex, tmp_branch, hle, repo);
11609 					if (error)
11610 						goto done;
11611 				} else {
11612 					error = got_object_open_as_commit(
11613 					    &commit, repo, hle->commit_id);
11614 					if (error)
11615 						goto done;
11616 					error = show_histedit_progress(commit,
11617 					    hle, NULL);
11618 					got_object_commit_close(commit);
11619 					commit = NULL;
11620 					if (error)
11621 						goto done;
11622 				}
11623 			}
11624 			continue;
11625 		}
11626 
11627 		if (hle->cmd->code == GOT_HISTEDIT_DROP) {
11628 			error = histedit_skip_commit(hle, worktree, repo);
11629 			if (error)
11630 				goto done;
11631 			continue;
11632 		}
11633 
11634 		error = got_object_open_as_commit(&commit, repo,
11635 		    hle->commit_id);
11636 		if (error)
11637 			goto done;
11638 		parent_ids = got_object_commit_get_parent_ids(commit);
11639 		pid = STAILQ_FIRST(parent_ids);
11640 
11641 		error = got_worktree_histedit_merge_files(&merged_paths,
11642 		    worktree, fileindex, &pid->id, hle->commit_id, repo,
11643 		    update_progress, &upa, check_cancelled, NULL);
11644 		if (error)
11645 			goto done;
11646 		got_object_commit_close(commit);
11647 		commit = NULL;
11648 
11649 		print_merge_progress_stats(&upa);
11650 		if (upa.conflicts > 0 || upa.missing > 0 ||
11651 		    upa.not_deleted > 0 || upa.unversioned > 0) {
11652 			if (upa.conflicts > 0) {
11653 				error = show_rebase_merge_conflict(
11654 				    hle->commit_id, repo);
11655 				if (error)
11656 					goto done;
11657 			}
11658 			got_worktree_rebase_pathlist_free(&merged_paths);
11659 			break;
11660 		}
11661 
11662 		if (hle->cmd->code == GOT_HISTEDIT_EDIT) {
11663 			char *id_str;
11664 			error = got_object_id_str(&id_str, hle->commit_id);
11665 			if (error)
11666 				goto done;
11667 			printf("Stopping histedit for amending commit %s\n",
11668 			    id_str);
11669 			free(id_str);
11670 			got_worktree_rebase_pathlist_free(&merged_paths);
11671 			error = got_worktree_histedit_postpone(worktree,
11672 			    fileindex);
11673 			goto done;
11674 		}
11675 
11676 		if (hle->cmd->code == GOT_HISTEDIT_FOLD) {
11677 			error = histedit_skip_commit(hle, worktree, repo);
11678 			if (error)
11679 				goto done;
11680 			continue;
11681 		}
11682 
11683 		error = histedit_commit(&merged_paths, worktree, fileindex,
11684 		    tmp_branch, hle, repo);
11685 		got_worktree_rebase_pathlist_free(&merged_paths);
11686 		if (error)
11687 			goto done;
11688 	}
11689 
11690 	if (upa.conflicts > 0 || upa.missing > 0 ||
11691 	    upa.not_deleted > 0 || upa.unversioned > 0) {
11692 		error = got_worktree_histedit_postpone(worktree, fileindex);
11693 		if (error)
11694 			goto done;
11695 		if (upa.conflicts > 0 && upa.missing == 0 &&
11696 		    upa.not_deleted == 0 && upa.unversioned == 0) {
11697 			error = got_error_msg(GOT_ERR_CONFLICTS,
11698 			    "conflicts must be resolved before histedit "
11699 			    "can continue");
11700 		} else if (upa.conflicts > 0) {
11701 			error = got_error_msg(GOT_ERR_CONFLICTS,
11702 			    "conflicts must be resolved before histedit "
11703 			    "can continue; changes destined for some "
11704 			    "files were not yet merged and should be "
11705 			    "merged manually if required before the "
11706 			    "histedit operation is continued");
11707 		} else {
11708 			error = got_error_msg(GOT_ERR_CONFLICTS,
11709 			    "changes destined for some files were not "
11710 			    "yet merged and should be merged manually "
11711 			    "if required before the histedit operation "
11712 			    "is continued");
11713 		}
11714 	} else
11715 		error = histedit_complete(worktree, fileindex, tmp_branch,
11716 		    branch, repo);
11717 done:
11718 	got_object_id_queue_free(&commits);
11719 	histedit_free_list(&histedit_cmds);
11720 	free(head_commit_id);
11721 	free(base_commit_id);
11722 	free(resume_commit_id);
11723 	if (commit)
11724 		got_object_commit_close(commit);
11725 	if (branch)
11726 		got_ref_close(branch);
11727 	if (tmp_branch)
11728 		got_ref_close(tmp_branch);
11729 	if (worktree)
11730 		got_worktree_close(worktree);
11731 	if (repo) {
11732 		const struct got_error *close_err = got_repo_close(repo);
11733 		if (error == NULL)
11734 			error = close_err;
11735 	}
11736 	if (pack_fds) {
11737 		const struct got_error *pack_err =
11738 		    got_repo_pack_fds_close(pack_fds);
11739 		if (error == NULL)
11740 			error = pack_err;
11741 	}
11742 	return error;
11743 }
11744 
11745 __dead static void
11746 usage_integrate(void)
11747 {
11748 	fprintf(stderr, "usage: %s integrate branch\n", getprogname());
11749 	exit(1);
11750 }
11751 
11752 static const struct got_error *
11753 cmd_integrate(int argc, char *argv[])
11754 {
11755 	const struct got_error *error = NULL;
11756 	struct got_repository *repo = NULL;
11757 	struct got_worktree *worktree = NULL;
11758 	char *cwd = NULL, *refname = NULL, *base_refname = NULL;
11759 	const char *branch_arg = NULL;
11760 	struct got_reference *branch_ref = NULL, *base_branch_ref = NULL;
11761 	struct got_fileindex *fileindex = NULL;
11762 	struct got_object_id *commit_id = NULL, *base_commit_id = NULL;
11763 	int ch;
11764 	struct got_update_progress_arg upa;
11765 	int *pack_fds = NULL;
11766 
11767 	while ((ch = getopt(argc, argv, "")) != -1) {
11768 		switch (ch) {
11769 		default:
11770 			usage_integrate();
11771 			/* NOTREACHED */
11772 		}
11773 	}
11774 
11775 	argc -= optind;
11776 	argv += optind;
11777 
11778 	if (argc != 1)
11779 		usage_integrate();
11780 	branch_arg = argv[0];
11781 #ifndef PROFILE
11782 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
11783 	    "unveil", NULL) == -1)
11784 		err(1, "pledge");
11785 #endif
11786 	cwd = getcwd(NULL, 0);
11787 	if (cwd == NULL) {
11788 		error = got_error_from_errno("getcwd");
11789 		goto done;
11790 	}
11791 
11792 	error = got_repo_pack_fds_open(&pack_fds);
11793 	if (error != NULL)
11794 		goto done;
11795 
11796 	error = got_worktree_open(&worktree, cwd);
11797 	if (error) {
11798 		if (error->code == GOT_ERR_NOT_WORKTREE)
11799 			error = wrap_not_worktree_error(error, "integrate",
11800 			    cwd);
11801 		goto done;
11802 	}
11803 
11804 	error = check_rebase_or_histedit_in_progress(worktree);
11805 	if (error)
11806 		goto done;
11807 
11808 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
11809 	    NULL, pack_fds);
11810 	if (error != NULL)
11811 		goto done;
11812 
11813 	error = apply_unveil(got_repo_get_path(repo), 0,
11814 	    got_worktree_get_root_path(worktree));
11815 	if (error)
11816 		goto done;
11817 
11818 	error = check_merge_in_progress(worktree, repo);
11819 	if (error)
11820 		goto done;
11821 
11822 	if (asprintf(&refname, "refs/heads/%s", branch_arg) == -1) {
11823 		error = got_error_from_errno("asprintf");
11824 		goto done;
11825 	}
11826 
11827 	error = got_worktree_integrate_prepare(&fileindex, &branch_ref,
11828 	    &base_branch_ref, worktree, refname, repo);
11829 	if (error)
11830 		goto done;
11831 
11832 	refname = strdup(got_ref_get_name(branch_ref));
11833 	if (refname == NULL) {
11834 		error = got_error_from_errno("strdup");
11835 		got_worktree_integrate_abort(worktree, fileindex, repo,
11836 		    branch_ref, base_branch_ref);
11837 		goto done;
11838 	}
11839 	base_refname = strdup(got_ref_get_name(base_branch_ref));
11840 	if (base_refname == NULL) {
11841 		error = got_error_from_errno("strdup");
11842 		got_worktree_integrate_abort(worktree, fileindex, repo,
11843 		    branch_ref, base_branch_ref);
11844 		goto done;
11845 	}
11846 
11847 	error = got_ref_resolve(&commit_id, repo, branch_ref);
11848 	if (error)
11849 		goto done;
11850 
11851 	error = got_ref_resolve(&base_commit_id, repo, base_branch_ref);
11852 	if (error)
11853 		goto done;
11854 
11855 	if (got_object_id_cmp(commit_id, base_commit_id) == 0) {
11856 		error = got_error_msg(GOT_ERR_SAME_BRANCH,
11857 		    "specified branch has already been integrated");
11858 		got_worktree_integrate_abort(worktree, fileindex, repo,
11859 		    branch_ref, base_branch_ref);
11860 		goto done;
11861 	}
11862 
11863 	error = check_linear_ancestry(commit_id, base_commit_id, 1, repo);
11864 	if (error) {
11865 		if (error->code == GOT_ERR_ANCESTRY)
11866 			error = got_error(GOT_ERR_REBASE_REQUIRED);
11867 		got_worktree_integrate_abort(worktree, fileindex, repo,
11868 		    branch_ref, base_branch_ref);
11869 		goto done;
11870 	}
11871 
11872 	memset(&upa, 0, sizeof(upa));
11873 	error = got_worktree_integrate_continue(worktree, fileindex, repo,
11874 	    branch_ref, base_branch_ref, update_progress, &upa,
11875 	    check_cancelled, NULL);
11876 	if (error)
11877 		goto done;
11878 
11879 	printf("Integrated %s into %s\n", refname, base_refname);
11880 	print_update_progress_stats(&upa);
11881 done:
11882 	if (repo) {
11883 		const struct got_error *close_err = got_repo_close(repo);
11884 		if (error == NULL)
11885 			error = close_err;
11886 	}
11887 	if (worktree)
11888 		got_worktree_close(worktree);
11889 	if (pack_fds) {
11890 		const struct got_error *pack_err =
11891 		    got_repo_pack_fds_close(pack_fds);
11892 		if (error == NULL)
11893 			error = pack_err;
11894 	}
11895 	free(cwd);
11896 	free(base_commit_id);
11897 	free(commit_id);
11898 	free(refname);
11899 	free(base_refname);
11900 	return error;
11901 }
11902 
11903 __dead static void
11904 usage_merge(void)
11905 {
11906 	fprintf(stderr, "usage: %s merge [-a] [-c] [-n] [branch]\n",
11907 	    getprogname());
11908 	exit(1);
11909 }
11910 
11911 static const struct got_error *
11912 cmd_merge(int argc, char *argv[])
11913 {
11914 	const struct got_error *error = NULL;
11915 	struct got_worktree *worktree = NULL;
11916 	struct got_repository *repo = NULL;
11917 	struct got_fileindex *fileindex = NULL;
11918 	char *cwd = NULL, *id_str = NULL, *author = NULL;
11919 	struct got_reference *branch = NULL, *wt_branch = NULL;
11920 	struct got_object_id *branch_tip = NULL, *yca_id = NULL;
11921 	struct got_object_id *wt_branch_tip = NULL;
11922 	int ch, merge_in_progress = 0, abort_merge = 0, continue_merge = 0;
11923 	int interrupt_merge = 0;
11924 	struct got_update_progress_arg upa;
11925 	struct got_object_id *merge_commit_id = NULL;
11926 	char *branch_name = NULL;
11927 	int *pack_fds = NULL;
11928 
11929 	memset(&upa, 0, sizeof(upa));
11930 
11931 	while ((ch = getopt(argc, argv, "acn")) != -1) {
11932 		switch (ch) {
11933 		case 'a':
11934 			abort_merge = 1;
11935 			break;
11936 		case 'c':
11937 			continue_merge = 1;
11938 			break;
11939 		case 'n':
11940 			interrupt_merge = 1;
11941 			break;
11942 		default:
11943 			usage_rebase();
11944 			/* NOTREACHED */
11945 		}
11946 	}
11947 
11948 	argc -= optind;
11949 	argv += optind;
11950 
11951 #ifndef PROFILE
11952 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
11953 	    "unveil", NULL) == -1)
11954 		err(1, "pledge");
11955 #endif
11956 
11957 	if (abort_merge && continue_merge)
11958 		option_conflict('a', 'c');
11959 	if (abort_merge || continue_merge) {
11960 		if (argc != 0)
11961 			usage_merge();
11962 	} else if (argc != 1)
11963 		usage_merge();
11964 
11965 	cwd = getcwd(NULL, 0);
11966 	if (cwd == NULL) {
11967 		error = got_error_from_errno("getcwd");
11968 		goto done;
11969 	}
11970 
11971 	error = got_repo_pack_fds_open(&pack_fds);
11972 	if (error != NULL)
11973 		goto done;
11974 
11975 	error = got_worktree_open(&worktree, cwd);
11976 	if (error) {
11977 		if (error->code == GOT_ERR_NOT_WORKTREE)
11978 			error = wrap_not_worktree_error(error,
11979 			    "merge", cwd);
11980 		goto done;
11981 	}
11982 
11983 	error = got_repo_open(&repo,
11984 	    worktree ? got_worktree_get_repo_path(worktree) : cwd, NULL,
11985 	    pack_fds);
11986 	if (error != NULL)
11987 		goto done;
11988 
11989 	error = apply_unveil(got_repo_get_path(repo), 0,
11990 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
11991 	if (error)
11992 		goto done;
11993 
11994 	error = check_rebase_or_histedit_in_progress(worktree);
11995 	if (error)
11996 		goto done;
11997 
11998 	error = got_worktree_merge_in_progress(&merge_in_progress, worktree,
11999 	    repo);
12000 	if (error)
12001 		goto done;
12002 
12003 	if (abort_merge) {
12004 		if (!merge_in_progress) {
12005 			error = got_error(GOT_ERR_NOT_MERGING);
12006 			goto done;
12007 		}
12008 		error = got_worktree_merge_continue(&branch_name,
12009 		    &branch_tip, &fileindex, worktree, repo);
12010 		if (error)
12011 			goto done;
12012 		error = got_worktree_merge_abort(worktree, fileindex, repo,
12013 		    abort_progress, &upa);
12014 		if (error)
12015 			goto done;
12016 		printf("Merge of %s aborted\n", branch_name);
12017 		goto done; /* nothing else to do */
12018 	}
12019 
12020 	error = get_author(&author, repo, worktree);
12021 	if (error)
12022 		goto done;
12023 
12024 	if (continue_merge) {
12025 		if (!merge_in_progress) {
12026 			error = got_error(GOT_ERR_NOT_MERGING);
12027 			goto done;
12028 		}
12029 		error = got_worktree_merge_continue(&branch_name,
12030 		    &branch_tip, &fileindex, worktree, repo);
12031 		if (error)
12032 			goto done;
12033 	} else {
12034 		error = got_ref_open(&branch, repo, argv[0], 0);
12035 		if (error != NULL)
12036 			goto done;
12037 		branch_name = strdup(got_ref_get_name(branch));
12038 		if (branch_name == NULL) {
12039 			error = got_error_from_errno("strdup");
12040 			goto done;
12041 		}
12042 		error = got_ref_resolve(&branch_tip, repo, branch);
12043 		if (error)
12044 			goto done;
12045 	}
12046 
12047 	error = got_ref_open(&wt_branch, repo,
12048 	    got_worktree_get_head_ref_name(worktree), 0);
12049 	if (error)
12050 		goto done;
12051 	error = got_ref_resolve(&wt_branch_tip, repo, wt_branch);
12052 	if (error)
12053 		goto done;
12054 	error = got_commit_graph_find_youngest_common_ancestor(&yca_id,
12055 	    wt_branch_tip, branch_tip, 0, repo,
12056 	    check_cancelled, NULL);
12057 	if (error && error->code != GOT_ERR_ANCESTRY)
12058 		goto done;
12059 
12060 	if (!continue_merge) {
12061 		error = check_path_prefix(wt_branch_tip, branch_tip,
12062 		    got_worktree_get_path_prefix(worktree),
12063 		    GOT_ERR_MERGE_PATH, repo);
12064 		if (error)
12065 			goto done;
12066 		if (yca_id) {
12067 			error = check_same_branch(wt_branch_tip, branch,
12068 			    yca_id, repo);
12069 			if (error) {
12070 				if (error->code != GOT_ERR_ANCESTRY)
12071 					goto done;
12072 				error = NULL;
12073 			} else {
12074 				static char msg[512];
12075 				snprintf(msg, sizeof(msg),
12076 				    "cannot create a merge commit because "
12077 				    "%s is based on %s; %s can be integrated "
12078 				    "with 'got integrate' instead", branch_name,
12079 				    got_worktree_get_head_ref_name(worktree),
12080 				    branch_name);
12081 				error = got_error_msg(GOT_ERR_SAME_BRANCH, msg);
12082 				goto done;
12083 			}
12084 		}
12085 		error = got_worktree_merge_prepare(&fileindex, worktree,
12086 		    branch, repo);
12087 		if (error)
12088 			goto done;
12089 
12090 		error = got_worktree_merge_branch(worktree, fileindex,
12091 		    yca_id, branch_tip, repo, update_progress, &upa,
12092 		    check_cancelled, NULL);
12093 		if (error)
12094 			goto done;
12095 		print_merge_progress_stats(&upa);
12096 		if (!upa.did_something) {
12097 			error = got_worktree_merge_abort(worktree, fileindex,
12098 			    repo, abort_progress, &upa);
12099 			if (error)
12100 				goto done;
12101 			printf("Already up-to-date\n");
12102 			goto done;
12103 		}
12104 	}
12105 
12106 	if (interrupt_merge) {
12107 		error = got_worktree_merge_postpone(worktree, fileindex);
12108 		if (error)
12109 			goto done;
12110 		printf("Merge of %s interrupted on request\n", branch_name);
12111 	} else if (upa.conflicts > 0 || upa.missing > 0 ||
12112 	    upa.not_deleted > 0 || upa.unversioned > 0) {
12113 		error = got_worktree_merge_postpone(worktree, fileindex);
12114 		if (error)
12115 			goto done;
12116 		if (upa.conflicts > 0 && upa.missing == 0 &&
12117 		    upa.not_deleted == 0 && upa.unversioned == 0) {
12118 			error = got_error_msg(GOT_ERR_CONFLICTS,
12119 			    "conflicts must be resolved before merging "
12120 			    "can continue");
12121 		} else if (upa.conflicts > 0) {
12122 			error = got_error_msg(GOT_ERR_CONFLICTS,
12123 			    "conflicts must be resolved before merging "
12124 			    "can continue; changes destined for some "
12125 			    "files were not yet merged and "
12126 			    "should be merged manually if required before the "
12127 			    "merge operation is continued");
12128 		} else {
12129 			error = got_error_msg(GOT_ERR_CONFLICTS,
12130 			    "changes destined for some "
12131 			    "files were not yet merged and should be "
12132 			    "merged manually if required before the "
12133 			    "merge operation is continued");
12134 		}
12135 		goto done;
12136 	} else {
12137 		error = got_worktree_merge_commit(&merge_commit_id, worktree,
12138 		    fileindex, author, NULL, 1, branch_tip, branch_name,
12139 		    repo, continue_merge ? print_status : NULL, NULL);
12140 		if (error)
12141 			goto done;
12142 		error = got_worktree_merge_complete(worktree, fileindex, repo);
12143 		if (error)
12144 			goto done;
12145 		error = got_object_id_str(&id_str, merge_commit_id);
12146 		if (error)
12147 			goto done;
12148 		printf("Merged %s into %s: %s\n", branch_name,
12149 		    got_worktree_get_head_ref_name(worktree),
12150 		    id_str);
12151 
12152 	}
12153 done:
12154 	free(id_str);
12155 	free(merge_commit_id);
12156 	free(author);
12157 	free(branch_tip);
12158 	free(branch_name);
12159 	free(yca_id);
12160 	if (branch)
12161 		got_ref_close(branch);
12162 	if (wt_branch)
12163 		got_ref_close(wt_branch);
12164 	if (worktree)
12165 		got_worktree_close(worktree);
12166 	if (repo) {
12167 		const struct got_error *close_err = got_repo_close(repo);
12168 		if (error == NULL)
12169 			error = close_err;
12170 	}
12171 	if (pack_fds) {
12172 		const struct got_error *pack_err =
12173 		    got_repo_pack_fds_close(pack_fds);
12174 		if (error == NULL)
12175 			error = pack_err;
12176 	}
12177 	return error;
12178 }
12179 
12180 __dead static void
12181 usage_stage(void)
12182 {
12183 	fprintf(stderr, "usage: %s stage [-l] | [-p] [-F response-script] "
12184 	    "[-S] [file-path ...]\n",
12185 	    getprogname());
12186 	exit(1);
12187 }
12188 
12189 static const struct got_error *
12190 print_stage(void *arg, unsigned char status, unsigned char staged_status,
12191     const char *path, struct got_object_id *blob_id,
12192     struct got_object_id *staged_blob_id, struct got_object_id *commit_id,
12193     int dirfd, const char *de_name)
12194 {
12195 	const struct got_error *err = NULL;
12196 	char *id_str = NULL;
12197 
12198 	if (staged_status != GOT_STATUS_ADD &&
12199 	    staged_status != GOT_STATUS_MODIFY &&
12200 	    staged_status != GOT_STATUS_DELETE)
12201 		return NULL;
12202 
12203 	if (staged_status == GOT_STATUS_ADD ||
12204 	    staged_status == GOT_STATUS_MODIFY)
12205 		err = got_object_id_str(&id_str, staged_blob_id);
12206 	else
12207 		err = got_object_id_str(&id_str, blob_id);
12208 	if (err)
12209 		return err;
12210 
12211 	printf("%s %c %s\n", id_str, staged_status, path);
12212 	free(id_str);
12213 	return NULL;
12214 }
12215 
12216 static const struct got_error *
12217 cmd_stage(int argc, char *argv[])
12218 {
12219 	const struct got_error *error = NULL;
12220 	struct got_repository *repo = NULL;
12221 	struct got_worktree *worktree = NULL;
12222 	char *cwd = NULL;
12223 	struct got_pathlist_head paths;
12224 	struct got_pathlist_entry *pe;
12225 	int ch, list_stage = 0, pflag = 0, allow_bad_symlinks = 0;
12226 	FILE *patch_script_file = NULL;
12227 	const char *patch_script_path = NULL;
12228 	struct choose_patch_arg cpa;
12229 	int *pack_fds = NULL;
12230 
12231 	TAILQ_INIT(&paths);
12232 
12233 	while ((ch = getopt(argc, argv, "lpF:S")) != -1) {
12234 		switch (ch) {
12235 		case 'l':
12236 			list_stage = 1;
12237 			break;
12238 		case 'p':
12239 			pflag = 1;
12240 			break;
12241 		case 'F':
12242 			patch_script_path = optarg;
12243 			break;
12244 		case 'S':
12245 			allow_bad_symlinks = 1;
12246 			break;
12247 		default:
12248 			usage_stage();
12249 			/* NOTREACHED */
12250 		}
12251 	}
12252 
12253 	argc -= optind;
12254 	argv += optind;
12255 
12256 #ifndef PROFILE
12257 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
12258 	    "unveil", NULL) == -1)
12259 		err(1, "pledge");
12260 #endif
12261 	if (list_stage && (pflag || patch_script_path))
12262 		errx(1, "-l option cannot be used with other options");
12263 	if (patch_script_path && !pflag)
12264 		errx(1, "-F option can only be used together with -p option");
12265 
12266 	cwd = getcwd(NULL, 0);
12267 	if (cwd == NULL) {
12268 		error = got_error_from_errno("getcwd");
12269 		goto done;
12270 	}
12271 
12272 	error = got_repo_pack_fds_open(&pack_fds);
12273 	if (error != NULL)
12274 		goto done;
12275 
12276 	error = got_worktree_open(&worktree, cwd);
12277 	if (error) {
12278 		if (error->code == GOT_ERR_NOT_WORKTREE)
12279 			error = wrap_not_worktree_error(error, "stage", cwd);
12280 		goto done;
12281 	}
12282 
12283 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
12284 	    NULL, pack_fds);
12285 	if (error != NULL)
12286 		goto done;
12287 
12288 	if (patch_script_path) {
12289 		patch_script_file = fopen(patch_script_path, "re");
12290 		if (patch_script_file == NULL) {
12291 			error = got_error_from_errno2("fopen",
12292 			    patch_script_path);
12293 			goto done;
12294 		}
12295 	}
12296 	error = apply_unveil(got_repo_get_path(repo), 0,
12297 	    got_worktree_get_root_path(worktree));
12298 	if (error)
12299 		goto done;
12300 
12301 	error = check_merge_in_progress(worktree, repo);
12302 	if (error)
12303 		goto done;
12304 
12305 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
12306 	if (error)
12307 		goto done;
12308 
12309 	if (list_stage)
12310 		error = got_worktree_status(worktree, &paths, repo, 0,
12311 		    print_stage, NULL, check_cancelled, NULL);
12312 	else {
12313 		cpa.patch_script_file = patch_script_file;
12314 		cpa.action = "stage";
12315 		error = got_worktree_stage(worktree, &paths,
12316 		    pflag ? NULL : print_status, NULL,
12317 		    pflag ? choose_patch : NULL, &cpa,
12318 		    allow_bad_symlinks, repo);
12319 	}
12320 done:
12321 	if (patch_script_file && fclose(patch_script_file) == EOF &&
12322 	    error == NULL)
12323 		error = got_error_from_errno2("fclose", patch_script_path);
12324 	if (repo) {
12325 		const struct got_error *close_err = got_repo_close(repo);
12326 		if (error == NULL)
12327 			error = close_err;
12328 	}
12329 	if (worktree)
12330 		got_worktree_close(worktree);
12331 	if (pack_fds) {
12332 		const struct got_error *pack_err =
12333 		    got_repo_pack_fds_close(pack_fds);
12334 		if (error == NULL)
12335 			error = pack_err;
12336 	}
12337 	TAILQ_FOREACH(pe, &paths, entry)
12338 		free((char *)pe->path);
12339 	got_pathlist_free(&paths);
12340 	free(cwd);
12341 	return error;
12342 }
12343 
12344 __dead static void
12345 usage_unstage(void)
12346 {
12347 	fprintf(stderr, "usage: %s unstage [-p] [-F response-script] "
12348 	    "[file-path ...]\n",
12349 	    getprogname());
12350 	exit(1);
12351 }
12352 
12353 
12354 static const struct got_error *
12355 cmd_unstage(int argc, char *argv[])
12356 {
12357 	const struct got_error *error = NULL;
12358 	struct got_repository *repo = NULL;
12359 	struct got_worktree *worktree = NULL;
12360 	char *cwd = NULL;
12361 	struct got_pathlist_head paths;
12362 	struct got_pathlist_entry *pe;
12363 	int ch, pflag = 0;
12364 	struct got_update_progress_arg upa;
12365 	FILE *patch_script_file = NULL;
12366 	const char *patch_script_path = NULL;
12367 	struct choose_patch_arg cpa;
12368 	int *pack_fds = NULL;
12369 
12370 	TAILQ_INIT(&paths);
12371 
12372 	while ((ch = getopt(argc, argv, "pF:")) != -1) {
12373 		switch (ch) {
12374 		case 'p':
12375 			pflag = 1;
12376 			break;
12377 		case 'F':
12378 			patch_script_path = optarg;
12379 			break;
12380 		default:
12381 			usage_unstage();
12382 			/* NOTREACHED */
12383 		}
12384 	}
12385 
12386 	argc -= optind;
12387 	argv += optind;
12388 
12389 #ifndef PROFILE
12390 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
12391 	    "unveil", NULL) == -1)
12392 		err(1, "pledge");
12393 #endif
12394 	if (patch_script_path && !pflag)
12395 		errx(1, "-F option can only be used together with -p option");
12396 
12397 	cwd = getcwd(NULL, 0);
12398 	if (cwd == NULL) {
12399 		error = got_error_from_errno("getcwd");
12400 		goto done;
12401 	}
12402 
12403 	error = got_repo_pack_fds_open(&pack_fds);
12404 	if (error != NULL)
12405 		goto done;
12406 
12407 	error = got_worktree_open(&worktree, cwd);
12408 	if (error) {
12409 		if (error->code == GOT_ERR_NOT_WORKTREE)
12410 			error = wrap_not_worktree_error(error, "unstage", cwd);
12411 		goto done;
12412 	}
12413 
12414 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
12415 	    NULL, pack_fds);
12416 	if (error != NULL)
12417 		goto done;
12418 
12419 	if (patch_script_path) {
12420 		patch_script_file = fopen(patch_script_path, "re");
12421 		if (patch_script_file == NULL) {
12422 			error = got_error_from_errno2("fopen",
12423 			    patch_script_path);
12424 			goto done;
12425 		}
12426 	}
12427 
12428 	error = apply_unveil(got_repo_get_path(repo), 0,
12429 	    got_worktree_get_root_path(worktree));
12430 	if (error)
12431 		goto done;
12432 
12433 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
12434 	if (error)
12435 		goto done;
12436 
12437 	cpa.patch_script_file = patch_script_file;
12438 	cpa.action = "unstage";
12439 	memset(&upa, 0, sizeof(upa));
12440 	error = got_worktree_unstage(worktree, &paths, update_progress,
12441 	    &upa, pflag ? choose_patch : NULL, &cpa, repo);
12442 	if (!error)
12443 		print_merge_progress_stats(&upa);
12444 done:
12445 	if (patch_script_file && fclose(patch_script_file) == EOF &&
12446 	    error == NULL)
12447 		error = got_error_from_errno2("fclose", patch_script_path);
12448 	if (repo) {
12449 		const struct got_error *close_err = got_repo_close(repo);
12450 		if (error == NULL)
12451 			error = close_err;
12452 	}
12453 	if (worktree)
12454 		got_worktree_close(worktree);
12455 	if (pack_fds) {
12456 		const struct got_error *pack_err =
12457 		    got_repo_pack_fds_close(pack_fds);
12458 		if (error == NULL)
12459 			error = pack_err;
12460 	}
12461 	TAILQ_FOREACH(pe, &paths, entry)
12462 		free((char *)pe->path);
12463 	got_pathlist_free(&paths);
12464 	free(cwd);
12465 	return error;
12466 }
12467 
12468 __dead static void
12469 usage_cat(void)
12470 {
12471 	fprintf(stderr, "usage: %s cat [-r repository ] [ -c commit ] [ -P ] "
12472 	    "arg1 [arg2 ...]\n", getprogname());
12473 	exit(1);
12474 }
12475 
12476 static const struct got_error *
12477 cat_blob(struct got_object_id *id, struct got_repository *repo, FILE *outfile)
12478 {
12479 	const struct got_error *err;
12480 	struct got_blob_object *blob;
12481 	int fd = -1;
12482 
12483 	fd = got_opentempfd();
12484 	if (fd == -1)
12485 		return got_error_from_errno("got_opentempfd");
12486 
12487 	err = got_object_open_as_blob(&blob, repo, id, 8192, fd);
12488 	if (err)
12489 		goto done;
12490 
12491 	err = got_object_blob_dump_to_file(NULL, NULL, NULL, outfile, blob);
12492 done:
12493 	if (fd != -1 && close(fd) == -1 && err == NULL)
12494 		err = got_error_from_errno("close");
12495 	if (blob)
12496 		got_object_blob_close(blob);
12497 	return err;
12498 }
12499 
12500 static const struct got_error *
12501 cat_tree(struct got_object_id *id, struct got_repository *repo, FILE *outfile)
12502 {
12503 	const struct got_error *err;
12504 	struct got_tree_object *tree;
12505 	int nentries, i;
12506 
12507 	err = got_object_open_as_tree(&tree, repo, id);
12508 	if (err)
12509 		return err;
12510 
12511 	nentries = got_object_tree_get_nentries(tree);
12512 	for (i = 0; i < nentries; i++) {
12513 		struct got_tree_entry *te;
12514 		char *id_str;
12515 		if (sigint_received || sigpipe_received)
12516 			break;
12517 		te = got_object_tree_get_entry(tree, i);
12518 		err = got_object_id_str(&id_str, got_tree_entry_get_id(te));
12519 		if (err)
12520 			break;
12521 		fprintf(outfile, "%s %.7o %s\n", id_str,
12522 		    got_tree_entry_get_mode(te),
12523 		    got_tree_entry_get_name(te));
12524 		free(id_str);
12525 	}
12526 
12527 	got_object_tree_close(tree);
12528 	return err;
12529 }
12530 
12531 static const struct got_error *
12532 cat_commit(struct got_object_id *id, struct got_repository *repo, FILE *outfile)
12533 {
12534 	const struct got_error *err;
12535 	struct got_commit_object *commit;
12536 	const struct got_object_id_queue *parent_ids;
12537 	struct got_object_qid *pid;
12538 	char *id_str = NULL;
12539 	const char *logmsg = NULL;
12540 	char gmtoff[6];
12541 
12542 	err = got_object_open_as_commit(&commit, repo, id);
12543 	if (err)
12544 		return err;
12545 
12546 	err = got_object_id_str(&id_str, got_object_commit_get_tree_id(commit));
12547 	if (err)
12548 		goto done;
12549 
12550 	fprintf(outfile, "%s%s\n", GOT_COMMIT_LABEL_TREE, id_str);
12551 	parent_ids = got_object_commit_get_parent_ids(commit);
12552 	fprintf(outfile, "numparents %d\n",
12553 	    got_object_commit_get_nparents(commit));
12554 	STAILQ_FOREACH(pid, parent_ids, entry) {
12555 		char *pid_str;
12556 		err = got_object_id_str(&pid_str, &pid->id);
12557 		if (err)
12558 			goto done;
12559 		fprintf(outfile, "%s%s\n", GOT_COMMIT_LABEL_PARENT, pid_str);
12560 		free(pid_str);
12561 	}
12562 	got_date_format_gmtoff(gmtoff, sizeof(gmtoff),
12563 	    got_object_commit_get_author_gmtoff(commit));
12564 	fprintf(outfile, "%s%s %lld %s\n", GOT_COMMIT_LABEL_AUTHOR,
12565 	    got_object_commit_get_author(commit),
12566 	    (long long)got_object_commit_get_author_time(commit),
12567 	    gmtoff);
12568 
12569 	got_date_format_gmtoff(gmtoff, sizeof(gmtoff),
12570 	    got_object_commit_get_committer_gmtoff(commit));
12571 	fprintf(outfile, "%s%s %lld %s\n", GOT_COMMIT_LABEL_COMMITTER,
12572 	    got_object_commit_get_author(commit),
12573 	    (long long)got_object_commit_get_committer_time(commit),
12574 	    gmtoff);
12575 
12576 	logmsg = got_object_commit_get_logmsg_raw(commit);
12577 	fprintf(outfile, "messagelen %zd\n", strlen(logmsg));
12578 	fprintf(outfile, "%s", logmsg);
12579 done:
12580 	free(id_str);
12581 	got_object_commit_close(commit);
12582 	return err;
12583 }
12584 
12585 static const struct got_error *
12586 cat_tag(struct got_object_id *id, struct got_repository *repo, FILE *outfile)
12587 {
12588 	const struct got_error *err;
12589 	struct got_tag_object *tag;
12590 	char *id_str = NULL;
12591 	const char *tagmsg = NULL;
12592 	char gmtoff[6];
12593 
12594 	err = got_object_open_as_tag(&tag, repo, id);
12595 	if (err)
12596 		return err;
12597 
12598 	err = got_object_id_str(&id_str, got_object_tag_get_object_id(tag));
12599 	if (err)
12600 		goto done;
12601 
12602 	fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_OBJECT, id_str);
12603 
12604 	switch (got_object_tag_get_object_type(tag)) {
12605 	case GOT_OBJ_TYPE_BLOB:
12606 		fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_TYPE,
12607 		    GOT_OBJ_LABEL_BLOB);
12608 		break;
12609 	case GOT_OBJ_TYPE_TREE:
12610 		fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_TYPE,
12611 		    GOT_OBJ_LABEL_TREE);
12612 		break;
12613 	case GOT_OBJ_TYPE_COMMIT:
12614 		fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_TYPE,
12615 		    GOT_OBJ_LABEL_COMMIT);
12616 		break;
12617 	case GOT_OBJ_TYPE_TAG:
12618 		fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_TYPE,
12619 		    GOT_OBJ_LABEL_TAG);
12620 		break;
12621 	default:
12622 		break;
12623 	}
12624 
12625 	fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_TAG,
12626 	    got_object_tag_get_name(tag));
12627 
12628 	got_date_format_gmtoff(gmtoff, sizeof(gmtoff),
12629 	    got_object_tag_get_tagger_gmtoff(tag));
12630 	fprintf(outfile, "%s%s %lld %s\n", GOT_TAG_LABEL_TAGGER,
12631 	    got_object_tag_get_tagger(tag),
12632 	    (long long)got_object_tag_get_tagger_time(tag),
12633 	    gmtoff);
12634 
12635 	tagmsg = got_object_tag_get_message(tag);
12636 	fprintf(outfile, "messagelen %zd\n", strlen(tagmsg));
12637 	fprintf(outfile, "%s", tagmsg);
12638 done:
12639 	free(id_str);
12640 	got_object_tag_close(tag);
12641 	return err;
12642 }
12643 
12644 static const struct got_error *
12645 cmd_cat(int argc, char *argv[])
12646 {
12647 	const struct got_error *error;
12648 	struct got_repository *repo = NULL;
12649 	struct got_worktree *worktree = NULL;
12650 	char *cwd = NULL, *repo_path = NULL, *label = NULL;
12651 	const char *commit_id_str = NULL;
12652 	struct got_object_id *id = NULL, *commit_id = NULL;
12653 	struct got_commit_object *commit = NULL;
12654 	int ch, obj_type, i, force_path = 0;
12655 	struct got_reflist_head refs;
12656 	int *pack_fds = NULL;
12657 
12658 	TAILQ_INIT(&refs);
12659 
12660 #ifndef PROFILE
12661 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
12662 	    NULL) == -1)
12663 		err(1, "pledge");
12664 #endif
12665 
12666 	while ((ch = getopt(argc, argv, "c:r:P")) != -1) {
12667 		switch (ch) {
12668 		case 'c':
12669 			commit_id_str = optarg;
12670 			break;
12671 		case 'r':
12672 			repo_path = realpath(optarg, NULL);
12673 			if (repo_path == NULL)
12674 				return got_error_from_errno2("realpath",
12675 				    optarg);
12676 			got_path_strip_trailing_slashes(repo_path);
12677 			break;
12678 		case 'P':
12679 			force_path = 1;
12680 			break;
12681 		default:
12682 			usage_cat();
12683 			/* NOTREACHED */
12684 		}
12685 	}
12686 
12687 	argc -= optind;
12688 	argv += optind;
12689 
12690 	cwd = getcwd(NULL, 0);
12691 	if (cwd == NULL) {
12692 		error = got_error_from_errno("getcwd");
12693 		goto done;
12694 	}
12695 
12696 	error = got_repo_pack_fds_open(&pack_fds);
12697 	if (error != NULL)
12698 		goto done;
12699 
12700 	if (repo_path == NULL) {
12701 		error = got_worktree_open(&worktree, cwd);
12702 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
12703 			goto done;
12704 		if (worktree) {
12705 			repo_path = strdup(
12706 			    got_worktree_get_repo_path(worktree));
12707 			if (repo_path == NULL) {
12708 				error = got_error_from_errno("strdup");
12709 				goto done;
12710 			}
12711 
12712 			/* Release work tree lock. */
12713 			got_worktree_close(worktree);
12714 			worktree = NULL;
12715 		}
12716 	}
12717 
12718 	if (repo_path == NULL) {
12719 		repo_path = strdup(cwd);
12720 		if (repo_path == NULL)
12721 			return got_error_from_errno("strdup");
12722 	}
12723 
12724 	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
12725 	free(repo_path);
12726 	if (error != NULL)
12727 		goto done;
12728 
12729 	error = apply_unveil(got_repo_get_path(repo), 1, NULL);
12730 	if (error)
12731 		goto done;
12732 
12733 	error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name, NULL);
12734 	if (error)
12735 		goto done;
12736 
12737 	if (commit_id_str == NULL)
12738 		commit_id_str = GOT_REF_HEAD;
12739 	error = got_repo_match_object_id(&commit_id, NULL,
12740 	    commit_id_str, GOT_OBJ_TYPE_COMMIT, &refs, repo);
12741 	if (error)
12742 		goto done;
12743 
12744 	error = got_object_open_as_commit(&commit, repo, commit_id);
12745 	if (error)
12746 		goto done;
12747 
12748 	for (i = 0; i < argc; i++) {
12749 		if (force_path) {
12750 			error = got_object_id_by_path(&id, repo, commit,
12751 			    argv[i]);
12752 			if (error)
12753 				break;
12754 		} else {
12755 			error = got_repo_match_object_id(&id, &label, argv[i],
12756 			    GOT_OBJ_TYPE_ANY, NULL /* do not resolve tags */,
12757 			    repo);
12758 			if (error) {
12759 				if (error->code != GOT_ERR_BAD_OBJ_ID_STR &&
12760 				    error->code != GOT_ERR_NOT_REF)
12761 					break;
12762 				error = got_object_id_by_path(&id, repo,
12763 				    commit, argv[i]);
12764 				if (error)
12765 					break;
12766 			}
12767 		}
12768 
12769 		error = got_object_get_type(&obj_type, repo, id);
12770 		if (error)
12771 			break;
12772 
12773 		switch (obj_type) {
12774 		case GOT_OBJ_TYPE_BLOB:
12775 			error = cat_blob(id, repo, stdout);
12776 			break;
12777 		case GOT_OBJ_TYPE_TREE:
12778 			error = cat_tree(id, repo, stdout);
12779 			break;
12780 		case GOT_OBJ_TYPE_COMMIT:
12781 			error = cat_commit(id, repo, stdout);
12782 			break;
12783 		case GOT_OBJ_TYPE_TAG:
12784 			error = cat_tag(id, repo, stdout);
12785 			break;
12786 		default:
12787 			error = got_error(GOT_ERR_OBJ_TYPE);
12788 			break;
12789 		}
12790 		if (error)
12791 			break;
12792 		free(label);
12793 		label = NULL;
12794 		free(id);
12795 		id = NULL;
12796 	}
12797 done:
12798 	free(label);
12799 	free(id);
12800 	free(commit_id);
12801 	if (commit)
12802 		got_object_commit_close(commit);
12803 	if (worktree)
12804 		got_worktree_close(worktree);
12805 	if (repo) {
12806 		const struct got_error *close_err = got_repo_close(repo);
12807 		if (error == NULL)
12808 			error = close_err;
12809 	}
12810 	if (pack_fds) {
12811 		const struct got_error *pack_err =
12812 		    got_repo_pack_fds_close(pack_fds);
12813 		if (error == NULL)
12814 			error = pack_err;
12815 	}
12816 
12817 	got_ref_list_free(&refs);
12818 	return error;
12819 }
12820 
12821 __dead static void
12822 usage_info(void)
12823 {
12824 	fprintf(stderr, "usage: %s info [path ...]\n",
12825 	    getprogname());
12826 	exit(1);
12827 }
12828 
12829 static const struct got_error *
12830 print_path_info(void *arg, const char *path, mode_t mode, time_t mtime,
12831     struct got_object_id *blob_id, struct got_object_id *staged_blob_id,
12832     struct got_object_id *commit_id)
12833 {
12834 	const struct got_error *err = NULL;
12835 	char *id_str = NULL;
12836 	char datebuf[128];
12837 	struct tm mytm, *tm;
12838 	struct got_pathlist_head *paths = arg;
12839 	struct got_pathlist_entry *pe;
12840 
12841 	/*
12842 	 * Clear error indication from any of the path arguments which
12843 	 * would cause this file index entry to be displayed.
12844 	 */
12845 	TAILQ_FOREACH(pe, paths, entry) {
12846 		if (got_path_cmp(path, pe->path, strlen(path),
12847 		    pe->path_len) == 0 ||
12848 		    got_path_is_child(path, pe->path, pe->path_len))
12849 			pe->data = NULL; /* no error */
12850 	}
12851 
12852 	printf(GOT_COMMIT_SEP_STR);
12853 	if (S_ISLNK(mode))
12854 		printf("symlink: %s\n", path);
12855 	else if (S_ISREG(mode)) {
12856 		printf("file: %s\n", path);
12857 		printf("mode: %o\n", mode & (S_IRWXU | S_IRWXG | S_IRWXO));
12858 	} else if (S_ISDIR(mode))
12859 		printf("directory: %s\n", path);
12860 	else
12861 		printf("something: %s\n", path);
12862 
12863 	tm = localtime_r(&mtime, &mytm);
12864 	if (tm == NULL)
12865 		return NULL;
12866 	if (strftime(datebuf, sizeof(datebuf), "%c %Z", tm) == 0)
12867 		return got_error(GOT_ERR_NO_SPACE);
12868 	printf("timestamp: %s\n", datebuf);
12869 
12870 	if (blob_id) {
12871 		err = got_object_id_str(&id_str, blob_id);
12872 		if (err)
12873 			return err;
12874 		printf("based on blob: %s\n", id_str);
12875 		free(id_str);
12876 	}
12877 
12878 	if (staged_blob_id) {
12879 		err = got_object_id_str(&id_str, staged_blob_id);
12880 		if (err)
12881 			return err;
12882 		printf("based on staged blob: %s\n", id_str);
12883 		free(id_str);
12884 	}
12885 
12886 	if (commit_id) {
12887 		err = got_object_id_str(&id_str, commit_id);
12888 		if (err)
12889 			return err;
12890 		printf("based on commit: %s\n", id_str);
12891 		free(id_str);
12892 	}
12893 
12894 	return NULL;
12895 }
12896 
12897 static const struct got_error *
12898 cmd_info(int argc, char *argv[])
12899 {
12900 	const struct got_error *error = NULL;
12901 	struct got_worktree *worktree = NULL;
12902 	char *cwd = NULL, *id_str = NULL;
12903 	struct got_pathlist_head paths;
12904 	struct got_pathlist_entry *pe;
12905 	char *uuidstr = NULL;
12906 	int ch, show_files = 0;
12907 	int *pack_fds = NULL;
12908 
12909 	TAILQ_INIT(&paths);
12910 
12911 	while ((ch = getopt(argc, argv, "")) != -1) {
12912 		switch (ch) {
12913 		default:
12914 			usage_info();
12915 			/* NOTREACHED */
12916 		}
12917 	}
12918 
12919 	argc -= optind;
12920 	argv += optind;
12921 
12922 #ifndef PROFILE
12923 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
12924 	    NULL) == -1)
12925 		err(1, "pledge");
12926 #endif
12927 	cwd = getcwd(NULL, 0);
12928 	if (cwd == NULL) {
12929 		error = got_error_from_errno("getcwd");
12930 		goto done;
12931 	}
12932 
12933 	error = got_repo_pack_fds_open(&pack_fds);
12934 	if (error != NULL)
12935 		goto done;
12936 
12937 	error = got_worktree_open(&worktree, cwd);
12938 	if (error) {
12939 		if (error->code == GOT_ERR_NOT_WORKTREE)
12940 			error = wrap_not_worktree_error(error, "info", cwd);
12941 		goto done;
12942 	}
12943 
12944 #ifndef PROFILE
12945 	/* Remove "cpath" promise. */
12946 	if (pledge("stdio rpath wpath flock proc exec sendfd unveil",
12947 	    NULL) == -1)
12948 		err(1, "pledge");
12949 #endif
12950 	error = apply_unveil(NULL, 0, got_worktree_get_root_path(worktree));
12951 	if (error)
12952 		goto done;
12953 
12954 	if (argc >= 1) {
12955 		error = get_worktree_paths_from_argv(&paths, argc, argv,
12956 		    worktree);
12957 		if (error)
12958 			goto done;
12959 		show_files = 1;
12960 	}
12961 
12962 	error = got_object_id_str(&id_str,
12963 	    got_worktree_get_base_commit_id(worktree));
12964 	if (error)
12965 		goto done;
12966 
12967 	error = got_worktree_get_uuid(&uuidstr, worktree);
12968 	if (error)
12969 		goto done;
12970 
12971 	printf("work tree: %s\n", got_worktree_get_root_path(worktree));
12972 	printf("work tree base commit: %s\n", id_str);
12973 	printf("work tree path prefix: %s\n",
12974 	    got_worktree_get_path_prefix(worktree));
12975 	printf("work tree branch reference: %s\n",
12976 	    got_worktree_get_head_ref_name(worktree));
12977 	printf("work tree UUID: %s\n", uuidstr);
12978 	printf("repository: %s\n", got_worktree_get_repo_path(worktree));
12979 
12980 	if (show_files) {
12981 		struct got_pathlist_entry *pe;
12982 		TAILQ_FOREACH(pe, &paths, entry) {
12983 			if (pe->path_len == 0)
12984 				continue;
12985 			/*
12986 			 * Assume this path will fail. This will be corrected
12987 			 * in print_path_info() in case the path does suceeed.
12988 			 */
12989 			pe->data = (void *)got_error_path(pe->path,
12990 			    GOT_ERR_BAD_PATH);
12991 		}
12992 		error = got_worktree_path_info(worktree, &paths,
12993 		    print_path_info, &paths, check_cancelled, NULL);
12994 		if (error)
12995 			goto done;
12996 		TAILQ_FOREACH(pe, &paths, entry) {
12997 			if (pe->data != NULL) {
12998 				error = pe->data; /* bad path */
12999 				break;
13000 			}
13001 		}
13002 	}
13003 done:
13004 	if (pack_fds) {
13005 		const struct got_error *pack_err =
13006 		    got_repo_pack_fds_close(pack_fds);
13007 		if (error == NULL)
13008 			error = pack_err;
13009 	}
13010 	TAILQ_FOREACH(pe, &paths, entry)
13011 		free((char *)pe->path);
13012 	got_pathlist_free(&paths);
13013 	free(cwd);
13014 	free(id_str);
13015 	free(uuidstr);
13016 	return error;
13017 }