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/types.h>
20 #include <sys/stat.h>
21 #include <sys/wait.h>
22 
23 #include <err.h>
24 #include <errno.h>
25 #include <fcntl.h>
26 #include <limits.h>
27 #include <locale.h>
28 #include <ctype.h>
29 #include <signal.h>
30 #include <stdio.h>
31 #include <stdlib.h>
32 #include <string.h>
33 #include <unistd.h>
34 #include <libgen.h>
35 #include <time.h>
36 #include <paths.h>
37 #include <regex.h>
38 #include <getopt.h>
39 
40 #include "got_compat.h"
41 
42 #include "got_version.h"
43 #include "got_error.h"
44 #include "got_object.h"
45 #include "got_reference.h"
46 #include "got_repository.h"
47 #include "got_path.h"
48 #include "got_cancel.h"
49 #include "got_worktree.h"
50 #include "got_diff.h"
51 #include "got_commit_graph.h"
52 #include "got_fetch.h"
53 #include "got_send.h"
54 #include "got_blame.h"
55 #include "got_privsep.h"
56 #include "got_opentemp.h"
57 #include "got_gotconfig.h"
58 #include "got_dial.h"
59 #include "got_patch.h"
60 
61 #ifndef nitems
62 #define nitems(_a)	(sizeof((_a)) / sizeof((_a)[0]))
63 #endif
64 
65 static volatile sig_atomic_t sigint_received;
66 static volatile sig_atomic_t sigpipe_received;
67 
68 static void
69 catch_sigint(int signo)
70 {
71 	sigint_received = 1;
72 }
73 
74 static void
75 catch_sigpipe(int signo)
76 {
77 	sigpipe_received = 1;
78 }
79 
80 
81 struct got_cmd {
82 	const char	*cmd_name;
83 	const struct got_error *(*cmd_main)(int, char *[]);
84 	void		(*cmd_usage)(void);
85 	const char	*cmd_alias;
86 };
87 
88 __dead static void	usage(int, int);
89 __dead static void	usage_init(void);
90 __dead static void	usage_import(void);
91 __dead static void	usage_clone(void);
92 __dead static void	usage_fetch(void);
93 __dead static void	usage_checkout(void);
94 __dead static void	usage_update(void);
95 __dead static void	usage_log(void);
96 __dead static void	usage_diff(void);
97 __dead static void	usage_blame(void);
98 __dead static void	usage_tree(void);
99 __dead static void	usage_status(void);
100 __dead static void	usage_ref(void);
101 __dead static void	usage_branch(void);
102 __dead static void	usage_tag(void);
103 __dead static void	usage_add(void);
104 __dead static void	usage_remove(void);
105 __dead static void	usage_patch(void);
106 __dead static void	usage_revert(void);
107 __dead static void	usage_commit(void);
108 __dead static void	usage_send(void);
109 __dead static void	usage_cherrypick(void);
110 __dead static void	usage_backout(void);
111 __dead static void	usage_rebase(void);
112 __dead static void	usage_histedit(void);
113 __dead static void	usage_integrate(void);
114 __dead static void	usage_merge(void);
115 __dead static void	usage_stage(void);
116 __dead static void	usage_unstage(void);
117 __dead static void	usage_cat(void);
118 __dead static void	usage_info(void);
119 
120 static const struct got_error*		cmd_init(int, char *[]);
121 static const struct got_error*		cmd_import(int, char *[]);
122 static const struct got_error*		cmd_clone(int, char *[]);
123 static const struct got_error*		cmd_fetch(int, char *[]);
124 static const struct got_error*		cmd_checkout(int, char *[]);
125 static const struct got_error*		cmd_update(int, char *[]);
126 static const struct got_error*		cmd_log(int, char *[]);
127 static const struct got_error*		cmd_diff(int, char *[]);
128 static const struct got_error*		cmd_blame(int, char *[]);
129 static const struct got_error*		cmd_tree(int, char *[]);
130 static const struct got_error*		cmd_status(int, char *[]);
131 static const struct got_error*		cmd_ref(int, char *[]);
132 static const struct got_error*		cmd_branch(int, char *[]);
133 static const struct got_error*		cmd_tag(int, char *[]);
134 static const struct got_error*		cmd_add(int, char *[]);
135 static const struct got_error*		cmd_remove(int, char *[]);
136 static const struct got_error*		cmd_patch(int, char *[]);
137 static const struct got_error*		cmd_revert(int, char *[]);
138 static const struct got_error*		cmd_commit(int, char *[]);
139 static const struct got_error*		cmd_send(int, char *[]);
140 static const struct got_error*		cmd_cherrypick(int, char *[]);
141 static const struct got_error*		cmd_backout(int, char *[]);
142 static const struct got_error*		cmd_rebase(int, char *[]);
143 static const struct got_error*		cmd_histedit(int, char *[]);
144 static const struct got_error*		cmd_integrate(int, char *[]);
145 static const struct got_error*		cmd_merge(int, char *[]);
146 static const struct got_error*		cmd_stage(int, char *[]);
147 static const struct got_error*		cmd_unstage(int, char *[]);
148 static const struct got_error*		cmd_cat(int, char *[]);
149 static const struct got_error*		cmd_info(int, char *[]);
150 
151 static const struct got_cmd got_commands[] = {
152 	{ "init",	cmd_init,	usage_init,	"" },
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_init(void)
348 {
349 	fprintf(stderr, "usage: %s init repository-path\n", getprogname());
350 	exit(1);
351 }
352 
353 static const struct got_error *
354 cmd_init(int argc, char *argv[])
355 {
356 	const struct got_error *error = NULL;
357 	char *repo_path = NULL;
358 	int ch;
359 
360 	while ((ch = getopt(argc, argv, "")) != -1) {
361 		switch (ch) {
362 		default:
363 			usage_init();
364 			/* NOTREACHED */
365 		}
366 	}
367 
368 	argc -= optind;
369 	argv += optind;
370 
371 #ifndef PROFILE
372 	if (pledge("stdio rpath wpath cpath unveil", NULL) == -1)
373 		err(1, "pledge");
374 #endif
375 	if (argc != 1)
376 		usage_init();
377 
378 	repo_path = strdup(argv[0]);
379 	if (repo_path == NULL)
380 		return got_error_from_errno("strdup");
381 
382 	got_path_strip_trailing_slashes(repo_path);
383 
384 	error = got_path_mkdir(repo_path);
385 	if (error &&
386 	    !(error->code == GOT_ERR_ERRNO && errno == EEXIST))
387 		goto done;
388 
389 	error = apply_unveil(repo_path, 0, NULL);
390 	if (error)
391 		goto done;
392 
393 	error = got_repo_init(repo_path);
394 done:
395 	free(repo_path);
396 	return error;
397 }
398 
399 __dead static void
400 usage_import(void)
401 {
402 	fprintf(stderr, "usage: %s import [-b branch] [-m message] "
403 	    "[-r repository-path] [-I pattern] path\n", getprogname());
404 	exit(1);
405 }
406 
407 int
408 spawn_editor(const char *editor, const char *file)
409 {
410 	pid_t pid;
411 	sig_t sighup, sigint, sigquit;
412 	int st = -1;
413 
414 	sighup = signal(SIGHUP, SIG_IGN);
415 	sigint = signal(SIGINT, SIG_IGN);
416 	sigquit = signal(SIGQUIT, SIG_IGN);
417 
418 	switch (pid = fork()) {
419 	case -1:
420 		goto doneediting;
421 	case 0:
422 		execl(editor, editor, file, (char *)NULL);
423 		_exit(127);
424 	}
425 
426 	while (waitpid(pid, &st, 0) == -1)
427 		if (errno != EINTR)
428 			break;
429 
430 doneediting:
431 	(void)signal(SIGHUP, sighup);
432 	(void)signal(SIGINT, sigint);
433 	(void)signal(SIGQUIT, sigquit);
434 
435 	if (!WIFEXITED(st)) {
436 		errno = EINTR;
437 		return -1;
438 	}
439 
440 	return WEXITSTATUS(st);
441 }
442 
443 static const struct got_error *
444 edit_logmsg(char **logmsg, const char *editor, const char *logmsg_path,
445     const char *initial_content, size_t initial_content_len,
446     int require_modification)
447 {
448 	const struct got_error *err = NULL;
449 	char *line = NULL;
450 	size_t linesize = 0;
451 	ssize_t linelen;
452 	struct stat st, st2;
453 	FILE *fp = NULL;
454 	size_t len, logmsg_len;
455 	char *initial_content_stripped = NULL, *buf = NULL, *s;
456 
457 	*logmsg = NULL;
458 
459 	if (stat(logmsg_path, &st) == -1)
460 		return got_error_from_errno2("stat", logmsg_path);
461 
462 	if (spawn_editor(editor, logmsg_path) == -1)
463 		return got_error_from_errno("failed spawning editor");
464 
465 	if (stat(logmsg_path, &st2) == -1)
466 		return got_error_from_errno("stat");
467 
468 	if (require_modification &&
469 	    st.st_mtime == st2.st_mtime && st.st_size == st2.st_size)
470 		return got_error_msg(GOT_ERR_COMMIT_MSG_EMPTY,
471 		    "no changes made to commit message, aborting");
472 
473 	/*
474 	 * Set up a stripped version of the initial content without comments
475 	 * and blank lines. We need this in order to check if the message
476 	 * has in fact been edited.
477 	 */
478 	initial_content_stripped = malloc(initial_content_len + 1);
479 	if (initial_content_stripped == NULL)
480 		return got_error_from_errno("malloc");
481 	initial_content_stripped[0] = '\0';
482 
483 	buf = strdup(initial_content);
484 	if (buf == NULL) {
485 		err = got_error_from_errno("strdup");
486 		goto done;
487 	}
488 	s = buf;
489 	len = 0;
490 	while ((line = strsep(&s, "\n")) != NULL) {
491 		if ((line[0] == '#' || (len == 0 && line[0] == '\n')))
492 			continue; /* remove comments and leading empty lines */
493 		len = strlcat(initial_content_stripped, line,
494 		    initial_content_len + 1);
495 		if (len >= initial_content_len + 1) {
496 			err = got_error(GOT_ERR_NO_SPACE);
497 			goto done;
498 		}
499 	}
500 	while (len > 0 && initial_content_stripped[len - 1] == '\n') {
501 		initial_content_stripped[len - 1] = '\0';
502 		len--;
503 	}
504 
505 	logmsg_len = st2.st_size;
506 	*logmsg = malloc(logmsg_len + 1);
507 	if (*logmsg == NULL)
508 		return got_error_from_errno("malloc");
509 	(*logmsg)[0] = '\0';
510 
511 	fp = fopen(logmsg_path, "re");
512 	if (fp == NULL) {
513 		err = got_error_from_errno("fopen");
514 		goto done;
515 	}
516 
517 	len = 0;
518 	while ((linelen = getline(&line, &linesize, fp)) != -1) {
519 		if ((line[0] == '#' || (len == 0 && line[0] == '\n')))
520 			continue; /* remove comments and leading empty lines */
521 		len = strlcat(*logmsg, line, logmsg_len + 1);
522 		if (len >= logmsg_len + 1) {
523 			err = got_error(GOT_ERR_NO_SPACE);
524 			goto done;
525 		}
526 	}
527 	free(line);
528 	if (ferror(fp)) {
529 		err = got_ferror(fp, GOT_ERR_IO);
530 		goto done;
531 	}
532 	while (len > 0 && (*logmsg)[len - 1] == '\n') {
533 		(*logmsg)[len - 1] = '\0';
534 		len--;
535 	}
536 
537 	if (len == 0) {
538 		err = got_error_msg(GOT_ERR_COMMIT_MSG_EMPTY,
539 		    "commit message cannot be empty, aborting");
540 		goto done;
541 	}
542 	if (require_modification &&
543 	    strcmp(*logmsg, initial_content_stripped) == 0)
544 		err = got_error_msg(GOT_ERR_COMMIT_MSG_EMPTY,
545 		    "no changes made to commit message, aborting");
546 done:
547 	free(initial_content_stripped);
548 	free(buf);
549 	if (fp && fclose(fp) == EOF && err == NULL)
550 		err = got_error_from_errno("fclose");
551 	if (err) {
552 		free(*logmsg);
553 		*logmsg = NULL;
554 	}
555 	return err;
556 }
557 
558 static const struct got_error *
559 collect_import_msg(char **logmsg, char **logmsg_path, const char *editor,
560     const char *path_dir, const char *branch_name)
561 {
562 	char *initial_content = NULL;
563 	const struct got_error *err = NULL;
564 	int initial_content_len;
565 	int fd = -1;
566 
567 	initial_content_len = asprintf(&initial_content,
568 	    "\n# %s to be imported to branch %s\n", path_dir,
569 	    branch_name);
570 	if (initial_content_len == -1)
571 		return got_error_from_errno("asprintf");
572 
573 	err = got_opentemp_named_fd(logmsg_path, &fd,
574 	    GOT_TMPDIR_STR "/got-importmsg");
575 	if (err)
576 		goto done;
577 
578 	if (write(fd, initial_content, initial_content_len) == -1) {
579 		err = got_error_from_errno2("write", *logmsg_path);
580 		goto done;
581 	}
582 
583 	err = edit_logmsg(logmsg, editor, *logmsg_path, initial_content,
584 	    initial_content_len, 1);
585 done:
586 	if (fd != -1 && close(fd) == -1 && err == NULL)
587 		err = got_error_from_errno2("close", *logmsg_path);
588 	free(initial_content);
589 	if (err) {
590 		free(*logmsg_path);
591 		*logmsg_path = NULL;
592 	}
593 	return err;
594 }
595 
596 static const struct got_error *
597 import_progress(void *arg, const char *path)
598 {
599 	printf("A  %s\n", path);
600 	return NULL;
601 }
602 
603 static int
604 valid_author(const char *author)
605 {
606 	/*
607 	 * Really dumb email address check; we're only doing this to
608 	 * avoid git's object parser breaking on commits we create.
609 	 */
610 	while (*author && *author != '<')
611 		author++;
612 	if (*author != '<')
613 		return 0;
614 	while (*author && *author != '@')
615 		author++;
616 	if (*author != '@')
617 		return 0;
618 	while (*author && *author != '>')
619 		author++;
620 	return *author == '>';
621 }
622 
623 static const struct got_error *
624 get_author(char **author, struct got_repository *repo,
625     struct got_worktree *worktree)
626 {
627 	const struct got_error *err = NULL;
628 	const char *got_author = NULL, *name, *email;
629 	const struct got_gotconfig *worktree_conf = NULL, *repo_conf = NULL;
630 
631 	*author = NULL;
632 
633 	if (worktree)
634 		worktree_conf = got_worktree_get_gotconfig(worktree);
635 	repo_conf = got_repo_get_gotconfig(repo);
636 
637 	/*
638 	 * Priority of potential author information sources, from most
639 	 * significant to least significant:
640 	 * 1) work tree's .got/got.conf file
641 	 * 2) repository's got.conf file
642 	 * 3) repository's git config file
643 	 * 4) environment variables
644 	 * 5) global git config files (in user's home directory or /etc)
645 	 */
646 
647 	if (worktree_conf)
648 		got_author = got_gotconfig_get_author(worktree_conf);
649 	if (got_author == NULL)
650 		got_author = got_gotconfig_get_author(repo_conf);
651 	if (got_author == NULL) {
652 		name = got_repo_get_gitconfig_author_name(repo);
653 		email = got_repo_get_gitconfig_author_email(repo);
654 		if (name && email) {
655 			if (asprintf(author, "%s <%s>", name, email) == -1)
656 				return got_error_from_errno("asprintf");
657 			return NULL;
658 		}
659 
660 		got_author = getenv("GOT_AUTHOR");
661 		if (got_author == NULL) {
662 			name = got_repo_get_global_gitconfig_author_name(repo);
663 			email = got_repo_get_global_gitconfig_author_email(
664 			    repo);
665 			if (name && email) {
666 				if (asprintf(author, "%s <%s>", name, email)
667 				    == -1)
668 					return got_error_from_errno("asprintf");
669 				return NULL;
670 			}
671 			/* TODO: Look up user in password database? */
672 			return got_error(GOT_ERR_COMMIT_NO_AUTHOR);
673 		}
674 	}
675 
676 	*author = strdup(got_author);
677 	if (*author == NULL)
678 		return got_error_from_errno("strdup");
679 
680 	if (!valid_author(*author)) {
681 		err = got_error_fmt(GOT_ERR_COMMIT_NO_EMAIL, "%s", *author);
682 		free(*author);
683 		*author = NULL;
684 	}
685 	return err;
686 }
687 
688 static const struct got_error *
689 get_gitconfig_path(char **gitconfig_path)
690 {
691 	const char *homedir = getenv("HOME");
692 
693 	*gitconfig_path = NULL;
694 	if (homedir) {
695 		if (asprintf(gitconfig_path, "%s/.gitconfig", homedir) == -1)
696 			return got_error_from_errno("asprintf");
697 
698 	}
699 	return NULL;
700 }
701 
702 static const struct got_error *
703 cmd_import(int argc, char *argv[])
704 {
705 	const struct got_error *error = NULL;
706 	char *path_dir = NULL, *repo_path = NULL, *logmsg = NULL;
707 	char *gitconfig_path = NULL, *editor = NULL, *author = NULL;
708 	const char *branch_name = "main";
709 	char *refname = NULL, *id_str = NULL, *logmsg_path = NULL;
710 	struct got_repository *repo = NULL;
711 	struct got_reference *branch_ref = NULL, *head_ref = NULL;
712 	struct got_object_id *new_commit_id = NULL;
713 	int ch;
714 	struct got_pathlist_head ignores;
715 	struct got_pathlist_entry *pe;
716 	int preserve_logmsg = 0;
717 
718 	TAILQ_INIT(&ignores);
719 
720 	while ((ch = getopt(argc, argv, "b:m:r:I:")) != -1) {
721 		switch (ch) {
722 		case 'b':
723 			branch_name = optarg;
724 			break;
725 		case 'm':
726 			logmsg = strdup(optarg);
727 			if (logmsg == NULL) {
728 				error = got_error_from_errno("strdup");
729 				goto done;
730 			}
731 			break;
732 		case 'r':
733 			repo_path = realpath(optarg, NULL);
734 			if (repo_path == NULL) {
735 				error = got_error_from_errno2("realpath",
736 				    optarg);
737 				goto done;
738 			}
739 			break;
740 		case 'I':
741 			if (optarg[0] == '\0')
742 				break;
743 			error = got_pathlist_insert(&pe, &ignores, optarg,
744 			    NULL);
745 			if (error)
746 				goto done;
747 			break;
748 		default:
749 			usage_import();
750 			/* NOTREACHED */
751 		}
752 	}
753 
754 	argc -= optind;
755 	argv += optind;
756 
757 #ifndef PROFILE
758 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
759 	    "unveil",
760 	    NULL) == -1)
761 		err(1, "pledge");
762 #endif
763 	if (argc != 1)
764 		usage_import();
765 
766 	if (repo_path == NULL) {
767 		repo_path = getcwd(NULL, 0);
768 		if (repo_path == NULL)
769 			return got_error_from_errno("getcwd");
770 	}
771 	got_path_strip_trailing_slashes(repo_path);
772 	error = get_gitconfig_path(&gitconfig_path);
773 	if (error)
774 		goto done;
775 	error = got_repo_open(&repo, repo_path, gitconfig_path);
776 	if (error)
777 		goto done;
778 
779 	error = get_author(&author, repo, NULL);
780 	if (error)
781 		return error;
782 
783 	/*
784 	 * Don't let the user create a branch name with a leading '-'.
785 	 * While technically a valid reference name, this case is usually
786 	 * an unintended typo.
787 	 */
788 	if (branch_name[0] == '-')
789 		return got_error_path(branch_name, GOT_ERR_REF_NAME_MINUS);
790 
791 	if (asprintf(&refname, "refs/heads/%s", branch_name) == -1) {
792 		error = got_error_from_errno("asprintf");
793 		goto done;
794 	}
795 
796 	error = got_ref_open(&branch_ref, repo, refname, 0);
797 	if (error) {
798 		if (error->code != GOT_ERR_NOT_REF)
799 			goto done;
800 	} else {
801 		error = got_error_msg(GOT_ERR_BRANCH_EXISTS,
802 		    "import target branch already exists");
803 		goto done;
804 	}
805 
806 	path_dir = realpath(argv[0], NULL);
807 	if (path_dir == NULL) {
808 		error = got_error_from_errno2("realpath", argv[0]);
809 		goto done;
810 	}
811 	got_path_strip_trailing_slashes(path_dir);
812 
813 	/*
814 	 * unveil(2) traverses exec(2); if an editor is used we have
815 	 * to apply unveil after the log message has been written.
816 	 */
817 	if (logmsg == NULL || strlen(logmsg) == 0) {
818 		error = get_editor(&editor);
819 		if (error)
820 			goto done;
821 		free(logmsg);
822 		error = collect_import_msg(&logmsg, &logmsg_path, editor,
823 		    path_dir, refname);
824 		if (error) {
825 			if (error->code != GOT_ERR_COMMIT_MSG_EMPTY &&
826 			    logmsg_path != NULL)
827 				preserve_logmsg = 1;
828 			goto done;
829 		}
830 	}
831 
832 	if (unveil(path_dir, "r") != 0) {
833 		error = got_error_from_errno2("unveil", path_dir);
834 		if (logmsg_path)
835 			preserve_logmsg = 1;
836 		goto done;
837 	}
838 
839 	error = apply_unveil(got_repo_get_path(repo), 0, NULL);
840 	if (error) {
841 		if (logmsg_path)
842 			preserve_logmsg = 1;
843 		goto done;
844 	}
845 
846 	error = got_repo_import(&new_commit_id, path_dir, logmsg,
847 	    author, &ignores, repo, import_progress, NULL);
848 	if (error) {
849 		if (logmsg_path)
850 			preserve_logmsg = 1;
851 		goto done;
852 	}
853 
854 	error = got_ref_alloc(&branch_ref, refname, new_commit_id);
855 	if (error) {
856 		if (logmsg_path)
857 			preserve_logmsg = 1;
858 		goto done;
859 	}
860 
861 	error = got_ref_write(branch_ref, repo);
862 	if (error) {
863 		if (logmsg_path)
864 			preserve_logmsg = 1;
865 		goto done;
866 	}
867 
868 	error = got_object_id_str(&id_str, new_commit_id);
869 	if (error) {
870 		if (logmsg_path)
871 			preserve_logmsg = 1;
872 		goto done;
873 	}
874 
875 	error = got_ref_open(&head_ref, repo, GOT_REF_HEAD, 0);
876 	if (error) {
877 		if (error->code != GOT_ERR_NOT_REF) {
878 			if (logmsg_path)
879 				preserve_logmsg = 1;
880 			goto done;
881 		}
882 
883 		error = got_ref_alloc_symref(&head_ref, GOT_REF_HEAD,
884 		    branch_ref);
885 		if (error) {
886 			if (logmsg_path)
887 				preserve_logmsg = 1;
888 			goto done;
889 		}
890 
891 		error = got_ref_write(head_ref, repo);
892 		if (error) {
893 			if (logmsg_path)
894 				preserve_logmsg = 1;
895 			goto done;
896 		}
897 	}
898 
899 	printf("Created branch %s with commit %s\n",
900 	    got_ref_get_name(branch_ref), id_str);
901 done:
902 	if (preserve_logmsg) {
903 		fprintf(stderr, "%s: log message preserved in %s\n",
904 		    getprogname(), logmsg_path);
905 	} else if (logmsg_path && unlink(logmsg_path) == -1 && error == NULL)
906 		error = got_error_from_errno2("unlink", logmsg_path);
907 	free(logmsg);
908 	free(logmsg_path);
909 	free(repo_path);
910 	free(editor);
911 	free(refname);
912 	free(new_commit_id);
913 	free(id_str);
914 	free(author);
915 	free(gitconfig_path);
916 	if (branch_ref)
917 		got_ref_close(branch_ref);
918 	if (head_ref)
919 		got_ref_close(head_ref);
920 	return error;
921 }
922 
923 __dead static void
924 usage_clone(void)
925 {
926 	fprintf(stderr, "usage: %s clone [-a] [-b branch] [-l] [-m] [-q] [-v] "
927 	    "[-R reference] repository-url [directory]\n", getprogname());
928 	exit(1);
929 }
930 
931 struct got_fetch_progress_arg {
932 	char last_scaled_size[FMT_SCALED_STRSIZE];
933 	int last_p_indexed;
934 	int last_p_resolved;
935 	int verbosity;
936 
937 	struct got_repository *repo;
938 
939 	int create_configs;
940 	int configs_created;
941 	struct {
942 		struct got_pathlist_head *symrefs;
943 		struct got_pathlist_head *wanted_branches;
944 		struct got_pathlist_head *wanted_refs;
945 		const char *proto;
946 		const char *host;
947 		const char *port;
948 		const char *remote_repo_path;
949 		const char *git_url;
950 		int fetch_all_branches;
951 		int mirror_references;
952 	} config_info;
953 };
954 
955 /* XXX forward declaration */
956 static const struct got_error *
957 create_config_files(const char *proto, const char *host, const char *port,
958     const char *remote_repo_path, const char *git_url, int fetch_all_branches,
959     int mirror_references, struct got_pathlist_head *symrefs,
960     struct got_pathlist_head *wanted_branches,
961     struct got_pathlist_head *wanted_refs, struct got_repository *repo);
962 
963 static const struct got_error *
964 fetch_progress(void *arg, const char *message, off_t packfile_size,
965     int nobj_total, int nobj_indexed, int nobj_loose, int nobj_resolved)
966 {
967 	const struct got_error *err = NULL;
968 	struct got_fetch_progress_arg *a = arg;
969 	char scaled_size[FMT_SCALED_STRSIZE];
970 	int p_indexed, p_resolved;
971 	int print_size = 0, print_indexed = 0, print_resolved = 0;
972 
973 	/*
974 	 * In order to allow a failed clone to be resumed with 'got fetch'
975 	 * we try to create configuration files as soon as possible.
976 	 * Once the server has sent information about its default branch
977 	 * we have all required information.
978 	 */
979 	if (a->create_configs && !a->configs_created &&
980 	    !TAILQ_EMPTY(a->config_info.symrefs)) {
981 		err = create_config_files(a->config_info.proto,
982 		    a->config_info.host, a->config_info.port,
983 		    a->config_info.remote_repo_path,
984 		    a->config_info.git_url,
985 		    a->config_info.fetch_all_branches,
986 		    a->config_info.mirror_references,
987 		    a->config_info.symrefs,
988 		    a->config_info.wanted_branches,
989 		    a->config_info.wanted_refs, a->repo);
990 		if (err)
991 			return err;
992 		a->configs_created = 1;
993 	}
994 
995 	if (a->verbosity < 0)
996 		return NULL;
997 
998 	if (message && message[0] != '\0') {
999 		printf("\rserver: %s", message);
1000 		fflush(stdout);
1001 		return NULL;
1002 	}
1003 
1004 	if (packfile_size > 0 || nobj_indexed > 0) {
1005 		if (fmt_scaled(packfile_size, scaled_size) == 0 &&
1006 		    (a->last_scaled_size[0] == '\0' ||
1007 		    strcmp(scaled_size, a->last_scaled_size)) != 0) {
1008 			print_size = 1;
1009 			if (strlcpy(a->last_scaled_size, scaled_size,
1010 			    FMT_SCALED_STRSIZE) >= FMT_SCALED_STRSIZE)
1011 				return got_error(GOT_ERR_NO_SPACE);
1012 		}
1013 		if (nobj_indexed > 0) {
1014 			p_indexed = (nobj_indexed * 100) / nobj_total;
1015 			if (p_indexed != a->last_p_indexed) {
1016 				a->last_p_indexed = p_indexed;
1017 				print_indexed = 1;
1018 				print_size = 1;
1019 			}
1020 		}
1021 		if (nobj_resolved > 0) {
1022 			p_resolved = (nobj_resolved * 100) /
1023 			    (nobj_total - nobj_loose);
1024 			if (p_resolved != a->last_p_resolved) {
1025 				a->last_p_resolved = p_resolved;
1026 				print_resolved = 1;
1027 				print_indexed = 1;
1028 				print_size = 1;
1029 			}
1030 		}
1031 
1032 	}
1033 	if (print_size || print_indexed || print_resolved)
1034 		printf("\r");
1035 	if (print_size)
1036 		printf("%*s fetched", FMT_SCALED_STRSIZE - 2, scaled_size);
1037 	if (print_indexed)
1038 		printf("; indexing %d%%", p_indexed);
1039 	if (print_resolved)
1040 		printf("; resolving deltas %d%%", p_resolved);
1041 	if (print_size || print_indexed || print_resolved)
1042 		fflush(stdout);
1043 
1044 	return NULL;
1045 }
1046 
1047 static const struct got_error *
1048 create_symref(const char *refname, struct got_reference *target_ref,
1049     int verbosity, struct got_repository *repo)
1050 {
1051 	const struct got_error *err;
1052 	struct got_reference *head_symref;
1053 
1054 	err = got_ref_alloc_symref(&head_symref, refname, target_ref);
1055 	if (err)
1056 		return err;
1057 
1058 	err = got_ref_write(head_symref, repo);
1059 	if (err == NULL && verbosity > 0) {
1060 		printf("Created reference %s: %s\n", GOT_REF_HEAD,
1061 		    got_ref_get_name(target_ref));
1062 	}
1063 	got_ref_close(head_symref);
1064 	return err;
1065 }
1066 
1067 static const struct got_error *
1068 list_remote_refs(struct got_pathlist_head *symrefs,
1069     struct got_pathlist_head *refs)
1070 {
1071 	const struct got_error *err;
1072 	struct got_pathlist_entry *pe;
1073 
1074 	TAILQ_FOREACH(pe, symrefs, entry) {
1075 		const char *refname = pe->path;
1076 		const char *targetref = pe->data;
1077 
1078 		printf("%s: %s\n", refname, targetref);
1079 	}
1080 
1081 	TAILQ_FOREACH(pe, refs, entry) {
1082 		const char *refname = pe->path;
1083 		struct got_object_id *id = pe->data;
1084 		char *id_str;
1085 
1086 		err = got_object_id_str(&id_str, id);
1087 		if (err)
1088 			return err;
1089 		printf("%s: %s\n", refname, id_str);
1090 		free(id_str);
1091 	}
1092 
1093 	return NULL;
1094 }
1095 
1096 static const struct got_error *
1097 create_ref(const char *refname, struct got_object_id *id,
1098     int verbosity, struct got_repository *repo)
1099 {
1100 	const struct got_error *err = NULL;
1101 	struct got_reference *ref;
1102 	char *id_str;
1103 
1104 	err = got_object_id_str(&id_str, id);
1105 	if (err)
1106 		return err;
1107 
1108 	err = got_ref_alloc(&ref, refname, id);
1109 	if (err)
1110 		goto done;
1111 
1112 	err = got_ref_write(ref, repo);
1113 	got_ref_close(ref);
1114 
1115 	if (err == NULL && verbosity >= 0)
1116 		printf("Created reference %s: %s\n", refname, id_str);
1117 done:
1118 	free(id_str);
1119 	return err;
1120 }
1121 
1122 static int
1123 match_wanted_ref(const char *refname, const char *wanted_ref)
1124 {
1125 	if (strncmp(refname, "refs/", 5) != 0)
1126 		return 0;
1127 	refname += 5;
1128 
1129 	/*
1130 	 * Prevent fetching of references that won't make any
1131 	 * sense outside of the remote repository's context.
1132 	 */
1133 	if (strncmp(refname, "got/", 4) == 0)
1134 		return 0;
1135 	if (strncmp(refname, "remotes/", 8) == 0)
1136 		return 0;
1137 
1138 	if (strncmp(wanted_ref, "refs/", 5) == 0)
1139 		wanted_ref += 5;
1140 
1141 	/* Allow prefix match. */
1142 	if (got_path_is_child(refname, wanted_ref, strlen(wanted_ref)))
1143 		return 1;
1144 
1145 	/* Allow exact match. */
1146 	return (strcmp(refname, wanted_ref) == 0);
1147 }
1148 
1149 static int
1150 is_wanted_ref(struct got_pathlist_head *wanted_refs, const char *refname)
1151 {
1152 	struct got_pathlist_entry *pe;
1153 
1154 	TAILQ_FOREACH(pe, wanted_refs, entry) {
1155 		if (match_wanted_ref(refname, pe->path))
1156 			return 1;
1157 	}
1158 
1159 	return 0;
1160 }
1161 
1162 static const struct got_error *
1163 create_wanted_ref(const char *refname, struct got_object_id *id,
1164     const char *remote_repo_name, int verbosity, struct got_repository *repo)
1165 {
1166 	const struct got_error *err;
1167 	char *remote_refname;
1168 
1169 	if (strncmp("refs/", refname, 5) == 0)
1170 		refname += 5;
1171 
1172 	if (asprintf(&remote_refname, "refs/remotes/%s/%s",
1173 	    remote_repo_name, refname) == -1)
1174 		return got_error_from_errno("asprintf");
1175 
1176 	err = create_ref(remote_refname, id, verbosity, repo);
1177 	free(remote_refname);
1178 	return err;
1179 }
1180 
1181 static const struct got_error *
1182 create_gotconfig(const char *proto, const char *host, const char *port,
1183     const char *remote_repo_path, const char *default_branch,
1184     int fetch_all_branches, struct got_pathlist_head *wanted_branches,
1185     struct got_pathlist_head *wanted_refs, int mirror_references,
1186     struct got_repository *repo)
1187 {
1188 	const struct got_error *err = NULL;
1189 	char *gotconfig_path = NULL;
1190 	char *gotconfig = NULL;
1191 	FILE *gotconfig_file = NULL;
1192 	const char *branchname = NULL;
1193 	char *branches = NULL, *refs = NULL;
1194 	ssize_t n;
1195 
1196 	if (!fetch_all_branches && !TAILQ_EMPTY(wanted_branches)) {
1197 		struct got_pathlist_entry *pe;
1198 		TAILQ_FOREACH(pe, wanted_branches, entry) {
1199 			char *s;
1200 			branchname = pe->path;
1201 			if (strncmp(branchname, "refs/heads/", 11) == 0)
1202 				branchname += 11;
1203 			if (asprintf(&s, "%s\"%s\" ",
1204 			    branches ? branches : "", branchname) == -1) {
1205 				err = got_error_from_errno("asprintf");
1206 				goto done;
1207 			}
1208 			free(branches);
1209 			branches = s;
1210 		}
1211 	} else if (!fetch_all_branches && default_branch) {
1212 		branchname = default_branch;
1213 		if (strncmp(branchname, "refs/heads/", 11) == 0)
1214 			branchname += 11;
1215 		if (asprintf(&branches, "\"%s\" ", branchname) == -1) {
1216 			err = got_error_from_errno("asprintf");
1217 			goto done;
1218 		}
1219 	}
1220 	if (!TAILQ_EMPTY(wanted_refs)) {
1221 		struct got_pathlist_entry *pe;
1222 		TAILQ_FOREACH(pe, wanted_refs, entry) {
1223 			char *s;
1224 			const char *refname = pe->path;
1225 			if (strncmp(refname, "refs/", 5) == 0)
1226 				branchname += 5;
1227 			if (asprintf(&s, "%s\"%s\" ",
1228 			    refs ? refs : "", refname) == -1) {
1229 				err = got_error_from_errno("asprintf");
1230 				goto done;
1231 			}
1232 			free(refs);
1233 			refs = s;
1234 		}
1235 	}
1236 
1237 	/* Create got.conf(5). */
1238 	gotconfig_path = got_repo_get_path_gotconfig(repo);
1239 	if (gotconfig_path == NULL) {
1240 		err = got_error_from_errno("got_repo_get_path_gotconfig");
1241 		goto done;
1242 	}
1243 	gotconfig_file = fopen(gotconfig_path, "ae");
1244 	if (gotconfig_file == NULL) {
1245 		err = got_error_from_errno2("fopen", gotconfig_path);
1246 		goto done;
1247 	}
1248 	if (asprintf(&gotconfig,
1249 	    "remote \"%s\" {\n"
1250 	    "\tserver %s\n"
1251 	    "\tprotocol %s\n"
1252 	    "%s%s%s"
1253 	    "\trepository \"%s\"\n"
1254 	    "%s%s%s"
1255 	    "%s%s%s"
1256 	    "%s"
1257 	    "%s"
1258 	    "}\n",
1259 	    GOT_FETCH_DEFAULT_REMOTE_NAME, host, proto,
1260 	    port ? "\tport " : "", port ? port : "", port ? "\n" : "",
1261 	    remote_repo_path, branches ? "\tbranch { " : "",
1262 	    branches ? branches : "", branches ? "}\n" : "", 
1263 	    refs ? "\treference { " : "", refs ? refs : "", refs ? "}\n" : "", 
1264 	    mirror_references ? "\tmirror-references yes\n" : "",
1265 	    fetch_all_branches ? "\tfetch-all-branches yes\n" : "") == -1) {
1266 		err = got_error_from_errno("asprintf");
1267 		goto done;
1268 	}
1269 	n = fwrite(gotconfig, 1, strlen(gotconfig), gotconfig_file);
1270 	if (n != strlen(gotconfig)) {
1271 		err = got_ferror(gotconfig_file, GOT_ERR_IO);
1272 		goto done;
1273 	}
1274 
1275 done:
1276 	if (gotconfig_file && fclose(gotconfig_file) == EOF && err == NULL)
1277 		err = got_error_from_errno2("fclose", gotconfig_path);
1278 	free(gotconfig_path);
1279 	free(branches);
1280 	return err;
1281 }
1282 
1283 static const struct got_error *
1284 create_gitconfig(const char *git_url, const char *default_branch,
1285     int fetch_all_branches, struct got_pathlist_head *wanted_branches,
1286     struct got_pathlist_head *wanted_refs, int mirror_references,
1287     struct got_repository *repo)
1288 {
1289 	const struct got_error *err = NULL;
1290 	char *gitconfig_path = NULL;
1291 	char *gitconfig = NULL;
1292 	FILE *gitconfig_file = NULL;
1293 	char *branches = NULL, *refs = NULL;
1294 	const char *branchname;
1295 	ssize_t n;
1296 
1297 	/* Create a config file Git can understand. */
1298 	gitconfig_path = got_repo_get_path_gitconfig(repo);
1299 	if (gitconfig_path == NULL) {
1300 		err = got_error_from_errno("got_repo_get_path_gitconfig");
1301 		goto done;
1302 	}
1303 	gitconfig_file = fopen(gitconfig_path, "ae");
1304 	if (gitconfig_file == NULL) {
1305 		err = got_error_from_errno2("fopen", gitconfig_path);
1306 		goto done;
1307 	}
1308 	if (fetch_all_branches) {
1309 		if (mirror_references) {
1310 			if (asprintf(&branches,
1311 			    "\tfetch = refs/heads/*:refs/heads/*\n") == -1) {
1312 				err = got_error_from_errno("asprintf");
1313 				goto done;
1314 			}
1315 		} else if (asprintf(&branches,
1316 		    "\tfetch = refs/heads/*:refs/remotes/%s/*\n",
1317 		    GOT_FETCH_DEFAULT_REMOTE_NAME) == -1) {
1318 			err = got_error_from_errno("asprintf");
1319 			goto done;
1320 		}
1321 	} else if (!TAILQ_EMPTY(wanted_branches)) {
1322 		struct got_pathlist_entry *pe;
1323 		TAILQ_FOREACH(pe, wanted_branches, entry) {
1324 			char *s;
1325 			branchname = pe->path;
1326 			if (strncmp(branchname, "refs/heads/", 11) == 0)
1327 				branchname += 11;
1328 			if (mirror_references) {
1329 				if (asprintf(&s,
1330 				    "%s\tfetch = refs/heads/%s:refs/heads/%s\n",
1331 				    branches ? branches : "",
1332 				    branchname, branchname) == -1) {
1333 					err = got_error_from_errno("asprintf");
1334 					goto done;
1335 				}
1336 			} else if (asprintf(&s,
1337 			    "%s\tfetch = refs/heads/%s:refs/remotes/%s/%s\n",
1338 			    branches ? branches : "",
1339 			    branchname, GOT_FETCH_DEFAULT_REMOTE_NAME,
1340 			    branchname) == -1) {
1341 				err = got_error_from_errno("asprintf");
1342 				goto done;
1343 			}
1344 			free(branches);
1345 			branches = s;
1346 		}
1347 	} else {
1348 		/*
1349 		 * If the server specified a default branch, use just that one.
1350 		 * Otherwise fall back to fetching all branches on next fetch.
1351 		 */
1352 		if (default_branch) {
1353 			branchname = default_branch;
1354 			if (strncmp(branchname, "refs/heads/", 11) == 0)
1355 				branchname += 11;
1356 		} else
1357 			branchname = "*"; /* fall back to all branches */
1358 		if (mirror_references) {
1359 			if (asprintf(&branches,
1360 			    "\tfetch = refs/heads/%s:refs/heads/%s\n",
1361 			    branchname, branchname) == -1) {
1362 				err = got_error_from_errno("asprintf");
1363 				goto done;
1364 			}
1365 		} else if (asprintf(&branches,
1366 		    "\tfetch = refs/heads/%s:refs/remotes/%s/%s\n",
1367 		    branchname, GOT_FETCH_DEFAULT_REMOTE_NAME,
1368 		    branchname) == -1) {
1369 			err = got_error_from_errno("asprintf");
1370 			goto done;
1371 		}
1372 	}
1373 	if (!TAILQ_EMPTY(wanted_refs)) {
1374 		struct got_pathlist_entry *pe;
1375 		TAILQ_FOREACH(pe, wanted_refs, entry) {
1376 			char *s;
1377 			const char *refname = pe->path;
1378 			if (strncmp(refname, "refs/", 5) == 0)
1379 				refname += 5;
1380 			if (mirror_references) {
1381 				if (asprintf(&s,
1382 				    "%s\tfetch = refs/%s:refs/%s\n",
1383 				    refs ? refs : "", refname, refname) == -1) {
1384 					err = got_error_from_errno("asprintf");
1385 					goto done;
1386 				}
1387 			} else if (asprintf(&s,
1388 			    "%s\tfetch = refs/%s:refs/remotes/%s/%s\n",
1389 			    refs ? refs : "",
1390 			    refname, GOT_FETCH_DEFAULT_REMOTE_NAME,
1391 			    refname) == -1) {
1392 				err = got_error_from_errno("asprintf");
1393 				goto done;
1394 			}
1395 			free(refs);
1396 			refs = s;
1397 		}
1398 	}
1399 
1400 	if (asprintf(&gitconfig,
1401 	    "[remote \"%s\"]\n"
1402 	    "\turl = %s\n"
1403 	    "%s"
1404 	    "%s"
1405 	    "\tfetch = refs/tags/*:refs/tags/*\n",
1406 	    GOT_FETCH_DEFAULT_REMOTE_NAME, git_url, branches ? branches : "",
1407 	    refs ? refs : "") == -1) {
1408 		err = got_error_from_errno("asprintf");
1409 		goto done;
1410 	}
1411 	n = fwrite(gitconfig, 1, strlen(gitconfig), gitconfig_file);
1412 	if (n != strlen(gitconfig)) {
1413 		err = got_ferror(gitconfig_file, GOT_ERR_IO);
1414 		goto done;
1415 	}
1416 done:
1417 	if (gitconfig_file && fclose(gitconfig_file) == EOF && err == NULL)
1418 		err = got_error_from_errno2("fclose", gitconfig_path);
1419 	free(gitconfig_path);
1420 	free(branches);
1421 	return err;
1422 }
1423 
1424 static const struct got_error *
1425 create_config_files(const char *proto, const char *host, const char *port,
1426     const char *remote_repo_path, const char *git_url, int fetch_all_branches,
1427     int mirror_references, struct got_pathlist_head *symrefs,
1428     struct got_pathlist_head *wanted_branches,
1429     struct got_pathlist_head *wanted_refs, struct got_repository *repo)
1430 {
1431 	const struct got_error *err = NULL;
1432 	const char *default_branch = NULL;
1433 	struct got_pathlist_entry *pe;
1434 
1435 	/*
1436 	 * If we asked for a set of wanted branches then use the first
1437 	 * one of those.
1438 	 */
1439 	if (!TAILQ_EMPTY(wanted_branches)) {
1440 		pe = TAILQ_FIRST(wanted_branches);
1441 		default_branch = pe->path;
1442 	} else {
1443 		/* First HEAD ref listed by server is the default branch. */
1444 		TAILQ_FOREACH(pe, symrefs, entry) {
1445 			const char *refname = pe->path;
1446 			const char *target = pe->data;
1447 
1448 			if (strcmp(refname, GOT_REF_HEAD) != 0)
1449 				continue;
1450 
1451 			default_branch = target;
1452 			break;
1453 		}
1454 	}
1455 
1456 	/* Create got.conf(5). */
1457 	err = create_gotconfig(proto, host, port, remote_repo_path,
1458 	    default_branch, fetch_all_branches, wanted_branches,
1459 	    wanted_refs, mirror_references, repo);
1460 	if (err)
1461 		return err;
1462 
1463 	/* Create a config file Git can understand. */
1464 	return create_gitconfig(git_url, default_branch, fetch_all_branches,
1465 	    wanted_branches, wanted_refs, mirror_references, repo);
1466 }
1467 
1468 static const struct got_error *
1469 cmd_clone(int argc, char *argv[])
1470 {
1471 	const struct got_error *error = NULL;
1472 	const char *uri, *dirname;
1473 	char *proto, *host, *port, *repo_name, *server_path;
1474 	char *default_destdir = NULL, *id_str = NULL;
1475 	const char *repo_path;
1476 	struct got_repository *repo = NULL;
1477 	struct got_pathlist_head refs, symrefs, wanted_branches, wanted_refs;
1478 	struct got_pathlist_entry *pe;
1479 	struct got_object_id *pack_hash = NULL;
1480 	int ch, fetchfd = -1, fetchstatus;
1481 	pid_t fetchpid = -1;
1482 	struct got_fetch_progress_arg fpa;
1483 	char *git_url = NULL;
1484 	int verbosity = 0, fetch_all_branches = 0, mirror_references = 0;
1485 	int list_refs_only = 0;
1486 
1487 	TAILQ_INIT(&refs);
1488 	TAILQ_INIT(&symrefs);
1489 	TAILQ_INIT(&wanted_branches);
1490 	TAILQ_INIT(&wanted_refs);
1491 
1492 	while ((ch = getopt(argc, argv, "ab:lmvqR:")) != -1) {
1493 		switch (ch) {
1494 		case 'a':
1495 			fetch_all_branches = 1;
1496 			break;
1497 		case 'b':
1498 			error = got_pathlist_append(&wanted_branches,
1499 			    optarg, NULL);
1500 			if (error)
1501 				return error;
1502 			break;
1503 		case 'l':
1504 			list_refs_only = 1;
1505 			break;
1506 		case 'm':
1507 			mirror_references = 1;
1508 			break;
1509 		case 'v':
1510 			if (verbosity < 0)
1511 				verbosity = 0;
1512 			else if (verbosity < 3)
1513 				verbosity++;
1514 			break;
1515 		case 'q':
1516 			verbosity = -1;
1517 			break;
1518 		case 'R':
1519 			error = got_pathlist_append(&wanted_refs,
1520 			    optarg, NULL);
1521 			if (error)
1522 				return error;
1523 			break;
1524 		default:
1525 			usage_clone();
1526 			break;
1527 		}
1528 	}
1529 	argc -= optind;
1530 	argv += optind;
1531 
1532 	if (fetch_all_branches && !TAILQ_EMPTY(&wanted_branches))
1533 		option_conflict('a', 'b');
1534 	if (list_refs_only) {
1535 		if (!TAILQ_EMPTY(&wanted_branches))
1536 			option_conflict('l', 'b');
1537 		if (fetch_all_branches)
1538 			option_conflict('l', 'a');
1539 		if (mirror_references)
1540 			option_conflict('l', 'm');
1541 		if (!TAILQ_EMPTY(&wanted_refs))
1542 			option_conflict('l', 'R');
1543 	}
1544 
1545 	uri = argv[0];
1546 
1547 	if (argc == 1)
1548 		dirname = NULL;
1549 	else if (argc == 2)
1550 		dirname = argv[1];
1551 	else
1552 		usage_clone();
1553 
1554 	error = got_dial_parse_uri(&proto, &host, &port, &server_path,
1555 	    &repo_name, uri);
1556 	if (error)
1557 		goto done;
1558 
1559 	if (asprintf(&git_url, "%s://%s%s%s%s%s", proto,
1560 	    host, port ? ":" : "", port ? port : "",
1561 	    server_path[0] != '/' ? "/" : "", server_path) == -1) {
1562 		error = got_error_from_errno("asprintf");
1563 		goto done;
1564 	}
1565 
1566 	if (strcmp(proto, "git") == 0) {
1567 #ifndef PROFILE
1568 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
1569 		    "sendfd dns inet unveil", NULL) == -1)
1570 			err(1, "pledge");
1571 #endif
1572 	} else if (strcmp(proto, "git+ssh") == 0 ||
1573 	    strcmp(proto, "ssh") == 0) {
1574 #ifndef PROFILE
1575 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
1576 		    "sendfd unveil", NULL) == -1)
1577 			err(1, "pledge");
1578 #endif
1579 	} else if (strcmp(proto, "http") == 0 ||
1580 	    strcmp(proto, "git+http") == 0) {
1581 		error = got_error_path(proto, GOT_ERR_NOT_IMPL);
1582 		goto done;
1583 	} else {
1584 		error = got_error_path(proto, GOT_ERR_BAD_PROTO);
1585 		goto done;
1586 	}
1587 	if (dirname == NULL) {
1588 		if (asprintf(&default_destdir, "%s.git", repo_name) == -1) {
1589 			error = got_error_from_errno("asprintf");
1590 			goto done;
1591 		}
1592 		repo_path = default_destdir;
1593 	} else
1594 		repo_path = dirname;
1595 
1596 	if (!list_refs_only) {
1597 		error = got_path_mkdir(repo_path);
1598 		if (error &&
1599 		    (!(error->code == GOT_ERR_ERRNO && errno == EISDIR) &&
1600 		    !(error->code == GOT_ERR_ERRNO && errno == EEXIST)))
1601 			goto done;
1602 		if (!got_path_dir_is_empty(repo_path)) {
1603 			error = got_error_path(repo_path,
1604 			    GOT_ERR_DIR_NOT_EMPTY);
1605 			goto done;
1606 		}
1607 	}
1608 
1609 	error = got_dial_apply_unveil(proto);
1610 	if (error)
1611 		goto done;
1612 
1613 	error = apply_unveil(repo_path, 0, NULL);
1614 	if (error)
1615 		goto done;
1616 
1617 	if (verbosity >= 0)
1618 		printf("Connecting to %s%s%s\n", host,
1619 		    port ? ":" : "", port ? port : "");
1620 
1621 	error = got_fetch_connect(&fetchpid, &fetchfd, proto, host, port,
1622 	    server_path, verbosity);
1623 	if (error)
1624 		goto done;
1625 
1626 	if (!list_refs_only) {
1627 		error = got_repo_init(repo_path);
1628 		if (error)
1629 			goto done;
1630 		error = got_repo_open(&repo, repo_path, NULL);
1631 		if (error)
1632 			goto done;
1633 	}
1634 
1635 	fpa.last_scaled_size[0] = '\0';
1636 	fpa.last_p_indexed = -1;
1637 	fpa.last_p_resolved = -1;
1638 	fpa.verbosity = verbosity;
1639 	fpa.create_configs = 1;
1640 	fpa.configs_created = 0;
1641 	fpa.repo = repo;
1642 	fpa.config_info.symrefs = &symrefs;
1643 	fpa.config_info.wanted_branches = &wanted_branches;
1644 	fpa.config_info.wanted_refs = &wanted_refs;
1645 	fpa.config_info.proto = proto;
1646 	fpa.config_info.host = host;
1647 	fpa.config_info.port = port;
1648 	fpa.config_info.remote_repo_path = server_path;
1649 	fpa.config_info.git_url = git_url;
1650 	fpa.config_info.fetch_all_branches = fetch_all_branches;
1651 	fpa.config_info.mirror_references = mirror_references;
1652 	error = got_fetch_pack(&pack_hash, &refs, &symrefs,
1653 	    GOT_FETCH_DEFAULT_REMOTE_NAME, mirror_references,
1654 	    fetch_all_branches, &wanted_branches, &wanted_refs,
1655 	    list_refs_only, verbosity, fetchfd, repo,
1656 	    fetch_progress, &fpa);
1657 	if (error)
1658 		goto done;
1659 
1660 	if (list_refs_only) {
1661 		error = list_remote_refs(&symrefs, &refs);
1662 		goto done;
1663 	}
1664 
1665 	if (pack_hash == NULL) {
1666 		error = got_error_fmt(GOT_ERR_FETCH_FAILED, "%s",
1667 		    "server sent an empty pack file");
1668 		goto done;
1669 	}
1670 	error = got_object_id_str(&id_str, pack_hash);
1671 	if (error)
1672 		goto done;
1673 	if (verbosity >= 0)
1674 		printf("\nFetched %s.pack\n", id_str);
1675 	free(id_str);
1676 
1677 	/* Set up references provided with the pack file. */
1678 	TAILQ_FOREACH(pe, &refs, entry) {
1679 		const char *refname = pe->path;
1680 		struct got_object_id *id = pe->data;
1681 		char *remote_refname;
1682 
1683 		if (is_wanted_ref(&wanted_refs, refname) &&
1684 		    !mirror_references) {
1685 			error = create_wanted_ref(refname, id,
1686 			    GOT_FETCH_DEFAULT_REMOTE_NAME,
1687 			    verbosity - 1, repo);
1688 			if (error)
1689 				goto done;
1690 			continue;
1691 		}
1692 
1693 		error = create_ref(refname, id, verbosity - 1, repo);
1694 		if (error)
1695 			goto done;
1696 
1697 		if (mirror_references)
1698 			continue;
1699 
1700 		if (strncmp("refs/heads/", refname, 11) != 0)
1701 			continue;
1702 
1703 		if (asprintf(&remote_refname,
1704 		    "refs/remotes/%s/%s", GOT_FETCH_DEFAULT_REMOTE_NAME,
1705 		    refname + 11) == -1) {
1706 			error = got_error_from_errno("asprintf");
1707 			goto done;
1708 		}
1709 		error = create_ref(remote_refname, id, verbosity - 1, repo);
1710 		free(remote_refname);
1711 		if (error)
1712 			goto done;
1713 	}
1714 
1715 	/* Set the HEAD reference if the server provided one. */
1716 	TAILQ_FOREACH(pe, &symrefs, entry) {
1717 		struct got_reference *target_ref;
1718 		const char *refname = pe->path;
1719 		const char *target = pe->data;
1720 		char *remote_refname = NULL, *remote_target = NULL;
1721 
1722 		if (strcmp(refname, GOT_REF_HEAD) != 0)
1723 			continue;
1724 
1725 		error = got_ref_open(&target_ref, repo, target, 0);
1726 		if (error) {
1727 			if (error->code == GOT_ERR_NOT_REF) {
1728 				error = NULL;
1729 				continue;
1730 			}
1731 			goto done;
1732 		}
1733 
1734 		error = create_symref(refname, target_ref, verbosity, repo);
1735 		got_ref_close(target_ref);
1736 		if (error)
1737 			goto done;
1738 
1739 		if (mirror_references)
1740 			continue;
1741 
1742 		if (strncmp("refs/heads/", target, 11) != 0)
1743 			continue;
1744 
1745 		if (asprintf(&remote_refname,
1746 		    "refs/remotes/%s/%s", GOT_FETCH_DEFAULT_REMOTE_NAME,
1747 		    refname) == -1) {
1748 			error = got_error_from_errno("asprintf");
1749 			goto done;
1750 		}
1751 		if (asprintf(&remote_target,
1752 		    "refs/remotes/%s/%s", GOT_FETCH_DEFAULT_REMOTE_NAME,
1753 		    target + 11) == -1) {
1754 			error = got_error_from_errno("asprintf");
1755 			free(remote_refname);
1756 			goto done;
1757 		}
1758 		error = got_ref_open(&target_ref, repo, remote_target, 0);
1759 		if (error) {
1760 			free(remote_refname);
1761 			free(remote_target);
1762 			if (error->code == GOT_ERR_NOT_REF) {
1763 				error = NULL;
1764 				continue;
1765 			}
1766 			goto done;
1767 		}
1768 		error = create_symref(remote_refname, target_ref,
1769 		    verbosity - 1, repo);
1770 		free(remote_refname);
1771 		free(remote_target);
1772 		got_ref_close(target_ref);
1773 		if (error)
1774 			goto done;
1775 	}
1776 	if (pe == NULL) {
1777 		/*
1778 		 * We failed to set the HEAD reference. If we asked for
1779 		 * a set of wanted branches use the first of one of those
1780 		 * which could be fetched instead.
1781 		 */
1782 		TAILQ_FOREACH(pe, &wanted_branches, entry) {
1783 			const char *target = pe->path;
1784 			struct got_reference *target_ref;
1785 
1786 			error = got_ref_open(&target_ref, repo, target, 0);
1787 			if (error) {
1788 				if (error->code == GOT_ERR_NOT_REF) {
1789 					error = NULL;
1790 					continue;
1791 				}
1792 				goto done;
1793 			}
1794 
1795 			error = create_symref(GOT_REF_HEAD, target_ref,
1796 			    verbosity, repo);
1797 			got_ref_close(target_ref);
1798 			if (error)
1799 				goto done;
1800 			break;
1801 		}
1802 	}
1803 
1804 	if (verbosity >= 0)
1805 		printf("Created %s repository '%s'\n",
1806 		    mirror_references ? "mirrored" : "cloned", repo_path);
1807 done:
1808 	if (fetchpid > 0) {
1809 		if (kill(fetchpid, SIGTERM) == -1)
1810 			error = got_error_from_errno("kill");
1811 		if (waitpid(fetchpid, &fetchstatus, 0) == -1 && error == NULL)
1812 			error = got_error_from_errno("waitpid");
1813 	}
1814 	if (fetchfd != -1 && close(fetchfd) == -1 && error == NULL)
1815 		error = got_error_from_errno("close");
1816 	if (repo) {
1817 		const struct got_error *close_err = got_repo_close(repo);
1818 		if (error == NULL)
1819 			error = close_err;
1820 	}
1821 	TAILQ_FOREACH(pe, &refs, entry) {
1822 		free((void *)pe->path);
1823 		free(pe->data);
1824 	}
1825 	got_pathlist_free(&refs);
1826 	TAILQ_FOREACH(pe, &symrefs, entry) {
1827 		free((void *)pe->path);
1828 		free(pe->data);
1829 	}
1830 	got_pathlist_free(&symrefs);
1831 	got_pathlist_free(&wanted_branches);
1832 	got_pathlist_free(&wanted_refs);
1833 	free(pack_hash);
1834 	free(proto);
1835 	free(host);
1836 	free(port);
1837 	free(server_path);
1838 	free(repo_name);
1839 	free(default_destdir);
1840 	free(git_url);
1841 	return error;
1842 }
1843 
1844 static const struct got_error *
1845 update_ref(struct got_reference *ref, struct got_object_id *new_id,
1846     int replace_tags, int verbosity, struct got_repository *repo)
1847 {
1848 	const struct got_error *err = NULL;
1849 	char *new_id_str = NULL;
1850 	struct got_object_id *old_id = NULL;
1851 
1852 	err = got_object_id_str(&new_id_str, new_id);
1853 	if (err)
1854 		goto done;
1855 
1856 	if (!replace_tags &&
1857 	    strncmp(got_ref_get_name(ref), "refs/tags/", 10) == 0) {
1858 		err = got_ref_resolve(&old_id, repo, ref);
1859 		if (err)
1860 			goto done;
1861 		if (got_object_id_cmp(old_id, new_id) == 0)
1862 			goto done;
1863 		if (verbosity >= 0) {
1864 			printf("Rejecting update of existing tag %s: %s\n",
1865 			    got_ref_get_name(ref), new_id_str);
1866 		}
1867 		goto done;
1868 	}
1869 
1870 	if (got_ref_is_symbolic(ref)) {
1871 		if (verbosity >= 0) {
1872 			printf("Replacing reference %s: %s\n",
1873 			    got_ref_get_name(ref),
1874 			    got_ref_get_symref_target(ref));
1875 		}
1876 		err = got_ref_change_symref_to_ref(ref, new_id);
1877 		if (err)
1878 			goto done;
1879 		err = got_ref_write(ref, repo);
1880 		if (err)
1881 			goto done;
1882 	} else {
1883 		err = got_ref_resolve(&old_id, repo, ref);
1884 		if (err)
1885 			goto done;
1886 		if (got_object_id_cmp(old_id, new_id) == 0)
1887 			goto done;
1888 
1889 		err = got_ref_change_ref(ref, new_id);
1890 		if (err)
1891 			goto done;
1892 		err = got_ref_write(ref, repo);
1893 		if (err)
1894 			goto done;
1895 	}
1896 
1897 	if (verbosity >= 0)
1898 		printf("Updated %s: %s\n", got_ref_get_name(ref),
1899 		    new_id_str);
1900 done:
1901 	free(old_id);
1902 	free(new_id_str);
1903 	return err;
1904 }
1905 
1906 static const struct got_error *
1907 update_symref(const char *refname, struct got_reference *target_ref,
1908     int verbosity, struct got_repository *repo)
1909 {
1910 	const struct got_error *err = NULL, *unlock_err;
1911 	struct got_reference *symref;
1912 	int symref_is_locked = 0;
1913 
1914 	err = got_ref_open(&symref, repo, refname, 1);
1915 	if (err) {
1916 		if (err->code != GOT_ERR_NOT_REF)
1917 			return err;
1918 		err = got_ref_alloc_symref(&symref, refname, target_ref);
1919 		if (err)
1920 			goto done;
1921 
1922 		err = got_ref_write(symref, repo);
1923 		if (err)
1924 			goto done;
1925 
1926 		if (verbosity >= 0)
1927 			printf("Created reference %s: %s\n",
1928 			    got_ref_get_name(symref),
1929 			    got_ref_get_symref_target(symref));
1930 	} else {
1931 		symref_is_locked = 1;
1932 
1933 		if (strcmp(got_ref_get_symref_target(symref),
1934 		    got_ref_get_name(target_ref)) == 0)
1935 			goto done;
1936 
1937 		err = got_ref_change_symref(symref,
1938 		    got_ref_get_name(target_ref));
1939 		if (err)
1940 			goto done;
1941 
1942 		err = got_ref_write(symref, repo);
1943 		if (err)
1944 			goto done;
1945 
1946 		if (verbosity >= 0)
1947 			printf("Updated %s: %s\n", got_ref_get_name(symref),
1948 			    got_ref_get_symref_target(symref));
1949 
1950 	}
1951 done:
1952 	if (symref_is_locked) {
1953 		unlock_err = got_ref_unlock(symref);
1954 		if (unlock_err && err == NULL)
1955 			err = unlock_err;
1956 	}
1957 	got_ref_close(symref);
1958 	return err;
1959 }
1960 
1961 __dead static void
1962 usage_fetch(void)
1963 {
1964 	fprintf(stderr, "usage: %s fetch [-a] [-b branch] [-d] [-l] "
1965 	    "[-r repository-path] [-t] [-q] [-v] [-R reference] [-X] "
1966 	    "[remote-repository-name]\n",
1967 	    getprogname());
1968 	exit(1);
1969 }
1970 
1971 static const struct got_error *
1972 delete_missing_ref(struct got_reference *ref,
1973     int verbosity, struct got_repository *repo)
1974 {
1975 	const struct got_error *err = NULL;
1976 	struct got_object_id *id = NULL;
1977 	char *id_str = NULL;
1978 
1979 	if (got_ref_is_symbolic(ref)) {
1980 		err = got_ref_delete(ref, repo);
1981 		if (err)
1982 			return err;
1983 		if (verbosity >= 0) {
1984 			printf("Deleted %s: %s\n",
1985 			    got_ref_get_name(ref),
1986 			    got_ref_get_symref_target(ref));
1987 		}
1988 	} else {
1989 		err = got_ref_resolve(&id, repo, ref);
1990 		if (err)
1991 			return err;
1992 		err = got_object_id_str(&id_str, id);
1993 		if (err)
1994 			goto done;
1995 
1996 		err = got_ref_delete(ref, repo);
1997 		if (err)
1998 			goto done;
1999 		if (verbosity >= 0) {
2000 			printf("Deleted %s: %s\n",
2001 			    got_ref_get_name(ref), id_str);
2002 		}
2003 	}
2004 done:
2005 	free(id);
2006 	free(id_str);
2007 	return NULL;
2008 }
2009 
2010 static const struct got_error *
2011 delete_missing_refs(struct got_pathlist_head *their_refs,
2012     struct got_pathlist_head *their_symrefs,
2013     const struct got_remote_repo *remote,
2014     int verbosity, struct got_repository *repo)
2015 {
2016 	const struct got_error *err = NULL, *unlock_err;
2017 	struct got_reflist_head my_refs;
2018 	struct got_reflist_entry *re;
2019 	struct got_pathlist_entry *pe;
2020 	char *remote_namespace = NULL;
2021 	char *local_refname = NULL;
2022 
2023 	TAILQ_INIT(&my_refs);
2024 
2025 	if (asprintf(&remote_namespace, "refs/remotes/%s/", remote->name)
2026 	    == -1)
2027 		return got_error_from_errno("asprintf");
2028 
2029 	err = got_ref_list(&my_refs, repo, NULL, got_ref_cmp_by_name, NULL);
2030 	if (err)
2031 		goto done;
2032 
2033 	TAILQ_FOREACH(re, &my_refs, entry) {
2034 		const char *refname = got_ref_get_name(re->ref);
2035 		const char *their_refname;
2036 
2037 		if (remote->mirror_references) {
2038 			their_refname = refname;
2039 		} else {
2040 			if (strncmp(refname, remote_namespace,
2041 			    strlen(remote_namespace)) == 0) {
2042 				if (strcmp(refname + strlen(remote_namespace),
2043 				    GOT_REF_HEAD) == 0)
2044 					continue;
2045 				if (asprintf(&local_refname, "refs/heads/%s",
2046 				    refname + strlen(remote_namespace)) == -1) {
2047 					err = got_error_from_errno("asprintf");
2048 					goto done;
2049 				}
2050 			} else if (strncmp(refname, "refs/tags/", 10) != 0)
2051 				continue;
2052 
2053 			their_refname = local_refname;
2054 		}
2055 	
2056 		TAILQ_FOREACH(pe, their_refs, entry) {
2057 			if (strcmp(their_refname, pe->path) == 0)
2058 				break;
2059 		}
2060 		if (pe != NULL)
2061 			continue;
2062 
2063 		TAILQ_FOREACH(pe, their_symrefs, entry) {
2064 			if (strcmp(their_refname, pe->path) == 0)
2065 				break;
2066 		}
2067 		if (pe != NULL)
2068 			continue;
2069 
2070 		err = delete_missing_ref(re->ref, verbosity, repo);
2071 		if (err)
2072 			break;
2073 
2074 		if (local_refname) {
2075 			struct got_reference *ref;
2076 			err = got_ref_open(&ref, repo, local_refname, 1);
2077 			if (err) {
2078 				if (err->code != GOT_ERR_NOT_REF)
2079 					break;
2080 				free(local_refname);
2081 				local_refname = NULL;
2082 				continue;
2083 			}
2084 			err = delete_missing_ref(ref, verbosity, repo);
2085 			if (err)
2086 				break;
2087 			unlock_err = got_ref_unlock(ref);
2088 			got_ref_close(ref);
2089 			if (unlock_err && err == NULL) {
2090 				err = unlock_err;
2091 				break;
2092 			}
2093 
2094 			free(local_refname);
2095 			local_refname = NULL;
2096 		}
2097 	}
2098 done:
2099 	free(remote_namespace);
2100 	free(local_refname);
2101 	return err;
2102 }
2103 
2104 static const struct got_error *
2105 update_wanted_ref(const char *refname, struct got_object_id *id,
2106     const char *remote_repo_name, int verbosity, struct got_repository *repo)
2107 {
2108 	const struct got_error *err, *unlock_err;
2109 	char *remote_refname;
2110 	struct got_reference *ref;
2111 
2112 	if (strncmp("refs/", refname, 5) == 0)
2113 		refname += 5;
2114 
2115 	if (asprintf(&remote_refname, "refs/remotes/%s/%s",
2116 	    remote_repo_name, refname) == -1)
2117 		return got_error_from_errno("asprintf");
2118 
2119 	err = got_ref_open(&ref, repo, remote_refname, 1);
2120 	if (err) {
2121 		if (err->code != GOT_ERR_NOT_REF)
2122 			goto done;
2123 		err = create_ref(remote_refname, id, verbosity, repo);
2124 	} else {
2125 		err = update_ref(ref, id, 0, verbosity, repo);
2126 		unlock_err = got_ref_unlock(ref);
2127 		if (unlock_err && err == NULL)
2128 			err = unlock_err;
2129 		got_ref_close(ref);
2130 	}
2131 done:
2132 	free(remote_refname);
2133 	return err;
2134 }
2135 
2136 static const struct got_error *
2137 delete_ref(struct got_repository *repo, struct got_reference *ref)
2138 {
2139 	const struct got_error *err = NULL;
2140 	struct got_object_id *id = NULL;
2141 	char *id_str = NULL;
2142 	const char *target;
2143 
2144 	if (got_ref_is_symbolic(ref)) {
2145 		target = got_ref_get_symref_target(ref);
2146 	} else {
2147 		err = got_ref_resolve(&id, repo, ref);
2148 		if (err)
2149 			goto done;
2150 		err = got_object_id_str(&id_str, id);
2151 		if (err)
2152 			goto done;
2153 		target = id_str;
2154 	}
2155 
2156 	err = got_ref_delete(ref, repo);
2157 	if (err)
2158 		goto done;
2159 
2160 	printf("Deleted %s: %s\n", got_ref_get_name(ref), target);
2161 done:
2162 	free(id);
2163 	free(id_str);
2164 	return err;
2165 }
2166 
2167 static const struct got_error *
2168 delete_refs_for_remote(struct got_repository *repo, const char *remote_name)
2169 {
2170 	const struct got_error *err = NULL;
2171 	struct got_reflist_head refs;
2172 	struct got_reflist_entry *re;
2173 	char *prefix;
2174 
2175 	TAILQ_INIT(&refs);
2176 
2177 	if (asprintf(&prefix, "refs/remotes/%s", remote_name) == -1) {
2178 		err = got_error_from_errno("asprintf");
2179 		goto done;
2180 	}
2181 	err = got_ref_list(&refs, repo, prefix, got_ref_cmp_by_name, NULL);
2182 	if (err)
2183 		goto done;
2184 
2185 	TAILQ_FOREACH(re, &refs, entry)
2186 		delete_ref(repo, re->ref);
2187 done:
2188 	got_ref_list_free(&refs);
2189 	return err;
2190 }
2191 
2192 static const struct got_error *
2193 cmd_fetch(int argc, char *argv[])
2194 {
2195 	const struct got_error *error = NULL, *unlock_err;
2196 	char *cwd = NULL, *repo_path = NULL;
2197 	const char *remote_name;
2198 	char *proto = NULL, *host = NULL, *port = NULL;
2199 	char *repo_name = NULL, *server_path = NULL;
2200 	const struct got_remote_repo *remotes, *remote = NULL;
2201 	int nremotes;
2202 	char *id_str = NULL;
2203 	struct got_repository *repo = NULL;
2204 	struct got_worktree *worktree = NULL;
2205 	const struct got_gotconfig *repo_conf = NULL, *worktree_conf = NULL;
2206 	struct got_pathlist_head refs, symrefs, wanted_branches, wanted_refs;
2207 	struct got_pathlist_entry *pe;
2208 	struct got_object_id *pack_hash = NULL;
2209 	int i, ch, fetchfd = -1, fetchstatus;
2210 	pid_t fetchpid = -1;
2211 	struct got_fetch_progress_arg fpa;
2212 	int verbosity = 0, fetch_all_branches = 0, list_refs_only = 0;
2213 	int delete_refs = 0, replace_tags = 0, delete_remote = 0;
2214 
2215 	TAILQ_INIT(&refs);
2216 	TAILQ_INIT(&symrefs);
2217 	TAILQ_INIT(&wanted_branches);
2218 	TAILQ_INIT(&wanted_refs);
2219 
2220 	while ((ch = getopt(argc, argv, "ab:dlr:tvqR:X")) != -1) {
2221 		switch (ch) {
2222 		case 'a':
2223 			fetch_all_branches = 1;
2224 			break;
2225 		case 'b':
2226 			error = got_pathlist_append(&wanted_branches,
2227 			    optarg, NULL);
2228 			if (error)
2229 				return error;
2230 			break;
2231 		case 'd':
2232 			delete_refs = 1;
2233 			break;
2234 		case 'l':
2235 			list_refs_only = 1;
2236 			break;
2237 		case 'r':
2238 			repo_path = realpath(optarg, NULL);
2239 			if (repo_path == NULL)
2240 				return got_error_from_errno2("realpath",
2241 				    optarg);
2242 			got_path_strip_trailing_slashes(repo_path);
2243 			break;
2244 		case 't':
2245 			replace_tags = 1;
2246 			break;
2247 		case 'v':
2248 			if (verbosity < 0)
2249 				verbosity = 0;
2250 			else if (verbosity < 3)
2251 				verbosity++;
2252 			break;
2253 		case 'q':
2254 			verbosity = -1;
2255 			break;
2256 		case 'R':
2257 			error = got_pathlist_append(&wanted_refs,
2258 			    optarg, NULL);
2259 			if (error)
2260 				return error;
2261 			break;
2262 		case 'X':
2263 			delete_remote = 1;
2264 			break;
2265 		default:
2266 			usage_fetch();
2267 			break;
2268 		}
2269 	}
2270 	argc -= optind;
2271 	argv += optind;
2272 
2273 	if (fetch_all_branches && !TAILQ_EMPTY(&wanted_branches))
2274 		option_conflict('a', 'b');
2275 	if (list_refs_only) {
2276 		if (!TAILQ_EMPTY(&wanted_branches))
2277 			option_conflict('l', 'b');
2278 		if (fetch_all_branches)
2279 			option_conflict('l', 'a');
2280 		if (delete_refs)
2281 			option_conflict('l', 'd');
2282 		if (delete_remote)
2283 			option_conflict('l', 'X');
2284 	}
2285 	if (delete_remote) {
2286 		if (fetch_all_branches)
2287 			option_conflict('X', 'a');
2288 		if (!TAILQ_EMPTY(&wanted_branches))
2289 			option_conflict('X', 'b');
2290 		if (delete_refs)
2291 			option_conflict('X', 'd');
2292 		if (replace_tags)
2293 			option_conflict('X', 't');
2294 		if (!TAILQ_EMPTY(&wanted_refs))
2295 			option_conflict('X', 'R');
2296 	}
2297 
2298 	if (argc == 0) {
2299 		if (delete_remote)
2300 			errx(1, "-X option requires a remote name");
2301 		remote_name = GOT_FETCH_DEFAULT_REMOTE_NAME;
2302 	} else if (argc == 1)
2303 		remote_name = argv[0];
2304 	else
2305 		usage_fetch();
2306 
2307 	cwd = getcwd(NULL, 0);
2308 	if (cwd == NULL) {
2309 		error = got_error_from_errno("getcwd");
2310 		goto done;
2311 	}
2312 
2313 	if (repo_path == NULL) {
2314 		error = got_worktree_open(&worktree, cwd);
2315 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
2316 			goto done;
2317 		else
2318 			error = NULL;
2319 		if (worktree) {
2320 			repo_path =
2321 			    strdup(got_worktree_get_repo_path(worktree));
2322 			if (repo_path == NULL)
2323 				error = got_error_from_errno("strdup");
2324 			if (error)
2325 				goto done;
2326 		} else {
2327 			repo_path = strdup(cwd);
2328 			if (repo_path == NULL) {
2329 				error = got_error_from_errno("strdup");
2330 				goto done;
2331 			}
2332 		}
2333 	}
2334 
2335 	error = got_repo_open(&repo, repo_path, NULL);
2336 	if (error)
2337 		goto done;
2338 
2339 	if (delete_remote) {
2340 		error = delete_refs_for_remote(repo, remote_name);
2341 		goto done; /* nothing else to do */
2342 	}
2343 
2344 	if (worktree) {
2345 		worktree_conf = got_worktree_get_gotconfig(worktree);
2346 		if (worktree_conf) {
2347 			got_gotconfig_get_remotes(&nremotes, &remotes,
2348 			    worktree_conf);
2349 			for (i = 0; i < nremotes; i++) {
2350 				if (strcmp(remotes[i].name, remote_name) == 0) {
2351 					remote = &remotes[i];
2352 					break;
2353 				}
2354 			}
2355 		}
2356 	}
2357 	if (remote == NULL) {
2358 		repo_conf = got_repo_get_gotconfig(repo);
2359 		if (repo_conf) {
2360 			got_gotconfig_get_remotes(&nremotes, &remotes,
2361 			    repo_conf);
2362 			for (i = 0; i < nremotes; i++) {
2363 				if (strcmp(remotes[i].name, remote_name) == 0) {
2364 					remote = &remotes[i];
2365 					break;
2366 				}
2367 			}
2368 		}
2369 	}
2370 	if (remote == NULL) {
2371 		got_repo_get_gitconfig_remotes(&nremotes, &remotes, repo);
2372 		for (i = 0; i < nremotes; i++) {
2373 			if (strcmp(remotes[i].name, remote_name) == 0) {
2374 				remote = &remotes[i];
2375 				break;
2376 			}
2377 		}
2378 	}
2379 	if (remote == NULL) {
2380 		error = got_error_path(remote_name, GOT_ERR_NO_REMOTE);
2381 		goto done;
2382 	}
2383 
2384 	if (TAILQ_EMPTY(&wanted_branches)) {
2385 		if (!fetch_all_branches)
2386 			fetch_all_branches = remote->fetch_all_branches;
2387 		for (i = 0; i < remote->nfetch_branches; i++) {
2388 			got_pathlist_append(&wanted_branches,
2389 			    remote->fetch_branches[i], NULL);
2390 		}
2391 	}
2392 	if (TAILQ_EMPTY(&wanted_refs)) {
2393 		for (i = 0; i < remote->nfetch_refs; i++) {
2394 			got_pathlist_append(&wanted_refs,
2395 			    remote->fetch_refs[i], NULL);
2396 		}
2397 	}
2398 
2399 	error = got_dial_parse_uri(&proto, &host, &port, &server_path,
2400 	    &repo_name, remote->fetch_url);
2401 	if (error)
2402 		goto done;
2403 
2404 	if (strcmp(proto, "git") == 0) {
2405 #ifndef PROFILE
2406 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
2407 		    "sendfd dns inet unveil", NULL) == -1)
2408 			err(1, "pledge");
2409 #endif
2410 	} else if (strcmp(proto, "git+ssh") == 0 ||
2411 	    strcmp(proto, "ssh") == 0) {
2412 #ifndef PROFILE
2413 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
2414 		    "sendfd unveil", NULL) == -1)
2415 			err(1, "pledge");
2416 #endif
2417 	} else if (strcmp(proto, "http") == 0 ||
2418 	    strcmp(proto, "git+http") == 0) {
2419 		error = got_error_path(proto, GOT_ERR_NOT_IMPL);
2420 		goto done;
2421 	} else {
2422 		error = got_error_path(proto, GOT_ERR_BAD_PROTO);
2423 		goto done;
2424 	}
2425 
2426 	error = got_dial_apply_unveil(proto);
2427 	if (error)
2428 		goto done;
2429 
2430 	error = apply_unveil(got_repo_get_path(repo), 0, NULL);
2431 	if (error)
2432 		goto done;
2433 
2434 	if (verbosity >= 0)
2435 		printf("Connecting to \"%s\" %s%s%s\n", remote->name, host,
2436 		    port ? ":" : "", port ? port : "");
2437 
2438 	error = got_fetch_connect(&fetchpid, &fetchfd, proto, host, port,
2439 	    server_path, verbosity);
2440 	if (error)
2441 		goto done;
2442 
2443 	fpa.last_scaled_size[0] = '\0';
2444 	fpa.last_p_indexed = -1;
2445 	fpa.last_p_resolved = -1;
2446 	fpa.verbosity = verbosity;
2447 	fpa.repo = repo;
2448 	fpa.create_configs = 0;
2449 	fpa.configs_created = 0;
2450 	memset(&fpa.config_info, 0, sizeof(fpa.config_info));
2451 	error = got_fetch_pack(&pack_hash, &refs, &symrefs, remote->name,
2452 	    remote->mirror_references, fetch_all_branches, &wanted_branches,
2453 	    &wanted_refs, list_refs_only, verbosity, fetchfd, repo,
2454 	    fetch_progress, &fpa);
2455 	if (error)
2456 		goto done;
2457 
2458 	if (list_refs_only) {
2459 		error = list_remote_refs(&symrefs, &refs);
2460 		goto done;
2461 	}
2462 
2463 	if (pack_hash == NULL) {
2464 		if (verbosity >= 0)
2465 			printf("Already up-to-date\n");
2466 	} else if (verbosity >= 0) {
2467 		error = got_object_id_str(&id_str, pack_hash);
2468 		if (error)
2469 			goto done;
2470 		printf("\nFetched %s.pack\n", id_str);
2471 		free(id_str);
2472 		id_str = NULL;
2473 	}
2474 
2475 	/* Update references provided with the pack file. */
2476 	TAILQ_FOREACH(pe, &refs, entry) {
2477 		const char *refname = pe->path;
2478 		struct got_object_id *id = pe->data;
2479 		struct got_reference *ref;
2480 		char *remote_refname;
2481 
2482 		if (is_wanted_ref(&wanted_refs, refname) &&
2483 		    !remote->mirror_references) {
2484 			error = update_wanted_ref(refname, id,
2485 			    remote->name, verbosity, repo);
2486 			if (error)
2487 				goto done;
2488 			continue;
2489 		}
2490 
2491 		if (remote->mirror_references ||
2492 		    strncmp("refs/tags/", refname, 10) == 0) {
2493 			error = got_ref_open(&ref, repo, refname, 1);
2494 			if (error) {
2495 				if (error->code != GOT_ERR_NOT_REF)
2496 					goto done;
2497 				error = create_ref(refname, id, verbosity,
2498 				    repo);
2499 				if (error)
2500 					goto done;
2501 			} else {
2502 				error = update_ref(ref, id, replace_tags,
2503 				    verbosity, repo);
2504 				unlock_err = got_ref_unlock(ref);
2505 				if (unlock_err && error == NULL)
2506 					error = unlock_err;
2507 				got_ref_close(ref);
2508 				if (error)
2509 					goto done;
2510 			}
2511 		} else if (strncmp("refs/heads/", refname, 11) == 0) {
2512 			if (asprintf(&remote_refname, "refs/remotes/%s/%s",
2513 			    remote_name, refname + 11) == -1) {
2514 				error = got_error_from_errno("asprintf");
2515 				goto done;
2516 			}
2517 
2518 			error = got_ref_open(&ref, repo, remote_refname, 1);
2519 			if (error) {
2520 				if (error->code != GOT_ERR_NOT_REF)
2521 					goto done;
2522 				error = create_ref(remote_refname, id, 
2523 				    verbosity, repo);
2524 				if (error)
2525 					goto done;
2526 			} else {
2527 				error = update_ref(ref, id, replace_tags,
2528 				    verbosity, repo);
2529 				unlock_err = got_ref_unlock(ref);
2530 				if (unlock_err && error == NULL)
2531 					error = unlock_err;
2532 				got_ref_close(ref);
2533 				if (error)
2534 					goto done;
2535 			}
2536 
2537 			/* Also create a local branch if none exists yet. */
2538 			error = got_ref_open(&ref, repo, refname, 1);
2539 			if (error) {
2540 				if (error->code != GOT_ERR_NOT_REF)
2541 					goto done;
2542 				error = create_ref(refname, id, verbosity,
2543 				    repo);
2544 				if (error)
2545 					goto done;
2546 			} else {
2547 				unlock_err = got_ref_unlock(ref);
2548 				if (unlock_err && error == NULL)
2549 					error = unlock_err;
2550 				got_ref_close(ref);
2551 			}
2552 		}
2553 	}
2554 	if (delete_refs) {
2555 		error = delete_missing_refs(&refs, &symrefs, remote,
2556 		    verbosity, repo);
2557 		if (error)
2558 			goto done;
2559 	}
2560 
2561 	if (!remote->mirror_references) {
2562 		/* Update remote HEAD reference if the server provided one. */
2563 		TAILQ_FOREACH(pe, &symrefs, entry) {
2564 			struct got_reference *target_ref;
2565 			const char *refname = pe->path;
2566 			const char *target = pe->data;
2567 			char *remote_refname = NULL, *remote_target = NULL;
2568 
2569 			if (strcmp(refname, GOT_REF_HEAD) != 0)
2570 				continue;
2571 
2572 			if (strncmp("refs/heads/", target, 11) != 0)
2573 				continue;
2574 
2575 			if (asprintf(&remote_refname, "refs/remotes/%s/%s",
2576 			    remote->name, refname) == -1) {
2577 				error = got_error_from_errno("asprintf");
2578 				goto done;
2579 			}
2580 			if (asprintf(&remote_target, "refs/remotes/%s/%s",
2581 			    remote->name, target + 11) == -1) {
2582 				error = got_error_from_errno("asprintf");
2583 				free(remote_refname);
2584 				goto done;
2585 			}
2586 
2587 			error = got_ref_open(&target_ref, repo, remote_target,
2588 			    0);
2589 			if (error) {
2590 				free(remote_refname);
2591 				free(remote_target);
2592 				if (error->code == GOT_ERR_NOT_REF) {
2593 					error = NULL;
2594 					continue;
2595 				}
2596 				goto done;
2597 			}
2598 			error = update_symref(remote_refname, target_ref,
2599 			    verbosity, repo);
2600 			free(remote_refname);
2601 			free(remote_target);
2602 			got_ref_close(target_ref);
2603 			if (error)
2604 				goto done;
2605 		}
2606 	}
2607 done:
2608 	if (fetchpid > 0) {
2609 		if (kill(fetchpid, SIGTERM) == -1)
2610 			error = got_error_from_errno("kill");
2611 		if (waitpid(fetchpid, &fetchstatus, 0) == -1 && error == NULL)
2612 			error = got_error_from_errno("waitpid");
2613 	}
2614 	if (fetchfd != -1 && close(fetchfd) == -1 && error == NULL)
2615 		error = got_error_from_errno("close");
2616 	if (repo) {
2617 		const struct got_error *close_err = got_repo_close(repo);
2618 		if (error == NULL)
2619 			error = close_err;
2620 	}
2621 	if (worktree)
2622 		got_worktree_close(worktree);
2623 	TAILQ_FOREACH(pe, &refs, entry) {
2624 		free((void *)pe->path);
2625 		free(pe->data);
2626 	}
2627 	got_pathlist_free(&refs);
2628 	TAILQ_FOREACH(pe, &symrefs, entry) {
2629 		free((void *)pe->path);
2630 		free(pe->data);
2631 	}
2632 	got_pathlist_free(&symrefs);
2633 	got_pathlist_free(&wanted_branches);
2634 	got_pathlist_free(&wanted_refs);
2635 	free(id_str);
2636 	free(cwd);
2637 	free(repo_path);
2638 	free(pack_hash);
2639 	free(proto);
2640 	free(host);
2641 	free(port);
2642 	free(server_path);
2643 	free(repo_name);
2644 	return error;
2645 }
2646 
2647 
2648 __dead static void
2649 usage_checkout(void)
2650 {
2651 	fprintf(stderr, "usage: %s checkout [-E] [-b branch] [-c commit] "
2652 	    "[-p prefix] [-q] repository-path [worktree-path]\n",
2653 	    getprogname());
2654 	exit(1);
2655 }
2656 
2657 static void
2658 show_worktree_base_ref_warning(void)
2659 {
2660 	fprintf(stderr, "%s: warning: could not create a reference "
2661 	    "to the work tree's base commit; the commit could be "
2662 	    "garbage-collected by Git or 'gotadmin cleanup'; making the "
2663 	    "repository writable and running 'got update' will prevent this\n",
2664 	    getprogname());
2665 }
2666 
2667 struct got_checkout_progress_arg {
2668 	const char *worktree_path;
2669 	int had_base_commit_ref_error;
2670 	int verbosity;
2671 };
2672 
2673 static const struct got_error *
2674 checkout_progress(void *arg, unsigned char status, const char *path)
2675 {
2676 	struct got_checkout_progress_arg *a = arg;
2677 
2678 	/* Base commit bump happens silently. */
2679 	if (status == GOT_STATUS_BUMP_BASE)
2680 		return NULL;
2681 
2682 	if (status == GOT_STATUS_BASE_REF_ERR) {
2683 		a->had_base_commit_ref_error = 1;
2684 		return NULL;
2685 	}
2686 
2687 	while (path[0] == '/')
2688 		path++;
2689 
2690 	if (a->verbosity >= 0)
2691 		printf("%c  %s/%s\n", status, a->worktree_path, path);
2692 
2693 	return NULL;
2694 }
2695 
2696 static const struct got_error *
2697 check_cancelled(void *arg)
2698 {
2699 	if (sigint_received || sigpipe_received)
2700 		return got_error(GOT_ERR_CANCELLED);
2701 	return NULL;
2702 }
2703 
2704 static const struct got_error *
2705 check_linear_ancestry(struct got_object_id *commit_id,
2706     struct got_object_id *base_commit_id, int allow_forwards_in_time_only,
2707     struct got_repository *repo)
2708 {
2709 	const struct got_error *err = NULL;
2710 	struct got_object_id *yca_id;
2711 
2712 	err = got_commit_graph_find_youngest_common_ancestor(&yca_id,
2713 	    commit_id, base_commit_id, 1, repo, check_cancelled, NULL);
2714 	if (err)
2715 		return err;
2716 
2717 	if (yca_id == NULL)
2718 		return got_error(GOT_ERR_ANCESTRY);
2719 
2720 	/*
2721 	 * Require a straight line of history between the target commit
2722 	 * and the work tree's base commit.
2723 	 *
2724 	 * Non-linear situations such as this require a rebase:
2725 	 *
2726 	 * (commit) D       F (base_commit)
2727 	 *           \     /
2728 	 *            C   E
2729 	 *             \ /
2730 	 *              B (yca)
2731 	 *              |
2732 	 *              A
2733 	 *
2734 	 * 'got update' only handles linear cases:
2735 	 * Update forwards in time:  A (base/yca) - B - C - D (commit)
2736 	 * Update backwards in time: D (base) - C - B - A (commit/yca)
2737 	 */
2738 	if (allow_forwards_in_time_only) {
2739 	    if (got_object_id_cmp(base_commit_id, yca_id) != 0)
2740 		return got_error(GOT_ERR_ANCESTRY);
2741 	} else if (got_object_id_cmp(commit_id, yca_id) != 0 &&
2742 	    got_object_id_cmp(base_commit_id, yca_id) != 0)
2743 		return got_error(GOT_ERR_ANCESTRY);
2744 
2745 	free(yca_id);
2746 	return NULL;
2747 }
2748 
2749 static const struct got_error *
2750 check_same_branch(struct got_object_id *commit_id,
2751     struct got_reference *head_ref, struct got_object_id *yca_id,
2752     struct got_repository *repo)
2753 {
2754 	const struct got_error *err = NULL;
2755 	struct got_commit_graph *graph = NULL;
2756 	struct got_object_id *head_commit_id = NULL;
2757 	int is_same_branch = 0;
2758 
2759 	err = got_ref_resolve(&head_commit_id, repo, head_ref);
2760 	if (err)
2761 		goto done;
2762 
2763 	if (got_object_id_cmp(head_commit_id, commit_id) == 0) {
2764 		is_same_branch = 1;
2765 		goto done;
2766 	}
2767 	if (yca_id && got_object_id_cmp(commit_id, yca_id) == 0) {
2768 		is_same_branch = 1;
2769 		goto done;
2770 	}
2771 
2772 	err = got_commit_graph_open(&graph, "/", 1);
2773 	if (err)
2774 		goto done;
2775 
2776 	err = got_commit_graph_iter_start(graph, head_commit_id, repo,
2777 	    check_cancelled, NULL);
2778 	if (err)
2779 		goto done;
2780 
2781 	for (;;) {
2782 		struct got_object_id *id;
2783 		err = got_commit_graph_iter_next(&id, graph, repo,
2784 		    check_cancelled, NULL);
2785 		if (err) {
2786 			if (err->code == GOT_ERR_ITER_COMPLETED)
2787 				err = NULL;
2788 			break;
2789 		}
2790 
2791 		if (id) {
2792 			if (yca_id && got_object_id_cmp(id, yca_id) == 0)
2793 				break;
2794 			if (got_object_id_cmp(id, commit_id) == 0) {
2795 				is_same_branch = 1;
2796 				break;
2797 			}
2798 		}
2799 	}
2800 done:
2801 	if (graph)
2802 		got_commit_graph_close(graph);
2803 	free(head_commit_id);
2804 	if (!err && !is_same_branch)
2805 		err = got_error(GOT_ERR_ANCESTRY);
2806 	return err;
2807 }
2808 
2809 static const struct got_error *
2810 checkout_ancestry_error(struct got_reference *ref, const char *commit_id_str)
2811 {
2812 	static char msg[512];
2813 	const char *branch_name;
2814 
2815 	if (got_ref_is_symbolic(ref))
2816 		branch_name = got_ref_get_symref_target(ref);
2817 	else
2818 		branch_name = got_ref_get_name(ref);
2819 
2820 	if (strncmp("refs/heads/", branch_name, 11) == 0)
2821 		branch_name += 11;
2822 
2823 	snprintf(msg, sizeof(msg),
2824 	    "target commit is not contained in branch '%s'; "
2825 	    "the branch to use must be specified with -b; "
2826 	    "if necessary a new branch can be created for "
2827 	    "this commit with 'got branch -c %s BRANCH_NAME'",
2828 	    branch_name, commit_id_str);
2829 
2830 	return got_error_msg(GOT_ERR_ANCESTRY, msg);
2831 }
2832 
2833 static const struct got_error *
2834 cmd_checkout(int argc, char *argv[])
2835 {
2836 	const struct got_error *error = NULL;
2837 	struct got_repository *repo = NULL;
2838 	struct got_reference *head_ref = NULL, *ref = NULL;
2839 	struct got_worktree *worktree = NULL;
2840 	char *repo_path = NULL;
2841 	char *worktree_path = NULL;
2842 	const char *path_prefix = "";
2843 	const char *branch_name = GOT_REF_HEAD, *refname = NULL;
2844 	char *commit_id_str = NULL;
2845 	struct got_object_id *commit_id = NULL;
2846 	char *cwd = NULL;
2847 	int ch, same_path_prefix, allow_nonempty = 0, verbosity = 0;
2848 	struct got_pathlist_head paths;
2849 	struct got_checkout_progress_arg cpa;
2850 
2851 	TAILQ_INIT(&paths);
2852 
2853 	while ((ch = getopt(argc, argv, "b:c:Ep:q")) != -1) {
2854 		switch (ch) {
2855 		case 'b':
2856 			branch_name = optarg;
2857 			break;
2858 		case 'c':
2859 			commit_id_str = strdup(optarg);
2860 			if (commit_id_str == NULL)
2861 				return got_error_from_errno("strdup");
2862 			break;
2863 		case 'E':
2864 			allow_nonempty = 1;
2865 			break;
2866 		case 'p':
2867 			path_prefix = optarg;
2868 			break;
2869 		case 'q':
2870 			verbosity = -1;
2871 			break;
2872 		default:
2873 			usage_checkout();
2874 			/* NOTREACHED */
2875 		}
2876 	}
2877 
2878 	argc -= optind;
2879 	argv += optind;
2880 
2881 #ifndef PROFILE
2882 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
2883 	    "unveil", NULL) == -1)
2884 		err(1, "pledge");
2885 #endif
2886 	if (argc == 1) {
2887 		char *base, *dotgit;
2888 		const char *path;
2889 		repo_path = realpath(argv[0], NULL);
2890 		if (repo_path == NULL)
2891 			return got_error_from_errno2("realpath", argv[0]);
2892 		cwd = getcwd(NULL, 0);
2893 		if (cwd == NULL) {
2894 			error = got_error_from_errno("getcwd");
2895 			goto done;
2896 		}
2897 		if (path_prefix[0])
2898 			path = path_prefix;
2899 		else
2900 			path = repo_path;
2901 		error = got_path_basename(&base, path);
2902 		if (error)
2903 			goto done;
2904 		dotgit = strstr(base, ".git");
2905 		if (dotgit)
2906 			*dotgit = '\0';
2907 		if (asprintf(&worktree_path, "%s/%s", cwd, base) == -1) {
2908 			error = got_error_from_errno("asprintf");
2909 			free(base);
2910 			goto done;
2911 		}
2912 		free(base);
2913 	} else if (argc == 2) {
2914 		repo_path = realpath(argv[0], NULL);
2915 		if (repo_path == NULL) {
2916 			error = got_error_from_errno2("realpath", argv[0]);
2917 			goto done;
2918 		}
2919 		worktree_path = realpath(argv[1], NULL);
2920 		if (worktree_path == NULL) {
2921 			if (errno != ENOENT) {
2922 				error = got_error_from_errno2("realpath",
2923 				    argv[1]);
2924 				goto done;
2925 			}
2926 			worktree_path = strdup(argv[1]);
2927 			if (worktree_path == NULL) {
2928 				error = got_error_from_errno("strdup");
2929 				goto done;
2930 			}
2931 		}
2932 	} else
2933 		usage_checkout();
2934 
2935 	got_path_strip_trailing_slashes(repo_path);
2936 	got_path_strip_trailing_slashes(worktree_path);
2937 
2938 	error = got_repo_open(&repo, repo_path, NULL);
2939 	if (error != NULL)
2940 		goto done;
2941 
2942 	/* Pre-create work tree path for unveil(2) */
2943 	error = got_path_mkdir(worktree_path);
2944 	if (error) {
2945 		if (!(error->code == GOT_ERR_ERRNO && errno == EISDIR) &&
2946 		    !(error->code == GOT_ERR_ERRNO && errno == EEXIST))
2947 			goto done;
2948 		if (!allow_nonempty &&
2949 		    !got_path_dir_is_empty(worktree_path)) {
2950 			error = got_error_path(worktree_path,
2951 			    GOT_ERR_DIR_NOT_EMPTY);
2952 			goto done;
2953 		}
2954 	}
2955 
2956 	error = apply_unveil(got_repo_get_path(repo), 0, worktree_path);
2957 	if (error)
2958 		goto done;
2959 
2960 	error = got_ref_open(&head_ref, repo, branch_name, 0);
2961 	if (error != NULL)
2962 		goto done;
2963 
2964 	error = got_worktree_init(worktree_path, head_ref, path_prefix, repo);
2965 	if (error != NULL && !(error->code == GOT_ERR_ERRNO && errno == EEXIST))
2966 		goto done;
2967 
2968 	error = got_worktree_open(&worktree, worktree_path);
2969 	if (error != NULL)
2970 		goto done;
2971 
2972 	error = got_worktree_match_path_prefix(&same_path_prefix, worktree,
2973 	    path_prefix);
2974 	if (error != NULL)
2975 		goto done;
2976 	if (!same_path_prefix) {
2977 		error = got_error(GOT_ERR_PATH_PREFIX);
2978 		goto done;
2979 	}
2980 
2981 	if (commit_id_str) {
2982 		struct got_reflist_head refs;
2983 		TAILQ_INIT(&refs);
2984 		error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name,
2985 		    NULL);
2986 		if (error)
2987 			goto done;
2988 		error = got_repo_match_object_id(&commit_id, NULL,
2989 		    commit_id_str, GOT_OBJ_TYPE_COMMIT, &refs, repo);
2990 		got_ref_list_free(&refs);
2991 		if (error)
2992 			goto done;
2993 		error = check_linear_ancestry(commit_id,
2994 		    got_worktree_get_base_commit_id(worktree), 0, repo);
2995 		if (error != NULL) {
2996 			free(commit_id);
2997 			if (error->code == GOT_ERR_ANCESTRY) {
2998 				error = checkout_ancestry_error(
2999 				    head_ref, commit_id_str);
3000 			}
3001 			goto done;
3002 		}
3003 		error = check_same_branch(commit_id, head_ref, NULL, repo);
3004 		if (error) {
3005 			if (error->code == GOT_ERR_ANCESTRY) {
3006 				error = checkout_ancestry_error(
3007 				    head_ref, commit_id_str);
3008 			}
3009 			goto done;
3010 		}
3011 		error = got_worktree_set_base_commit_id(worktree, repo,
3012 		    commit_id);
3013 		if (error)
3014 			goto done;
3015 		/* Expand potentially abbreviated commit ID string. */
3016 		free(commit_id_str);
3017 		error = got_object_id_str(&commit_id_str, commit_id);
3018 		if (error)
3019 			goto done;
3020 	} else {
3021 		commit_id = got_object_id_dup(
3022 		    got_worktree_get_base_commit_id(worktree));
3023 		if (commit_id == NULL) {
3024 			error = got_error_from_errno("got_object_id_dup");
3025 			goto done;
3026 		}
3027 		error = got_object_id_str(&commit_id_str, commit_id);
3028 		if (error)
3029 			goto done;
3030 	}
3031 
3032 	error = got_pathlist_append(&paths, "", NULL);
3033 	if (error)
3034 		goto done;
3035 	cpa.worktree_path = worktree_path;
3036 	cpa.had_base_commit_ref_error = 0;
3037 	cpa.verbosity = verbosity;
3038 	error = got_worktree_checkout_files(worktree, &paths, repo,
3039 	    checkout_progress, &cpa, check_cancelled, NULL);
3040 	if (error != NULL)
3041 		goto done;
3042 
3043 	if (got_ref_is_symbolic(head_ref)) {
3044 		error = got_ref_resolve_symbolic(&ref, repo, head_ref);
3045 		if (error)
3046 			goto done;
3047 		refname = got_ref_get_name(ref);
3048 	} else
3049 		refname = got_ref_get_name(head_ref);
3050 	printf("Checked out %s: %s\n", refname, commit_id_str);
3051 	printf("Now shut up and hack\n");
3052 	if (cpa.had_base_commit_ref_error)
3053 		show_worktree_base_ref_warning();
3054 done:
3055 	if (head_ref)
3056 		got_ref_close(head_ref);
3057 	if (ref)
3058 		got_ref_close(ref);
3059 	got_pathlist_free(&paths);
3060 	free(commit_id_str);
3061 	free(commit_id);
3062 	free(repo_path);
3063 	free(worktree_path);
3064 	free(cwd);
3065 	return error;
3066 }
3067 
3068 struct got_update_progress_arg {
3069 	int did_something;
3070 	int conflicts;
3071 	int obstructed;
3072 	int not_updated;
3073 	int missing;
3074 	int not_deleted;
3075 	int unversioned;
3076 	int verbosity;
3077 };
3078 
3079 void
3080 print_update_progress_stats(struct got_update_progress_arg *upa)
3081 {
3082 	if (!upa->did_something)
3083 		return;
3084 
3085 	if (upa->conflicts > 0)
3086 		printf("Files with new merge conflicts: %d\n", upa->conflicts);
3087 	if (upa->obstructed > 0)
3088 		printf("File paths obstructed by a non-regular file: %d\n",
3089 		    upa->obstructed);
3090 	if (upa->not_updated > 0)
3091 		printf("Files not updated because of existing merge "
3092 		    "conflicts: %d\n", upa->not_updated);
3093 }
3094 
3095 /*
3096  * The meaning of some status codes differs between merge-style operations and
3097  * update operations. For example, the ! status code means "file was missing"
3098  * if changes were merged into the work tree, and "missing file was restored"
3099  * if the work tree was updated. This function should be used by any operation
3100  * which merges changes into the work tree without updating the work tree.
3101  */
3102 void
3103 print_merge_progress_stats(struct got_update_progress_arg *upa)
3104 {
3105 	if (!upa->did_something)
3106 		return;
3107 
3108 	if (upa->conflicts > 0)
3109 		printf("Files with new merge conflicts: %d\n", upa->conflicts);
3110 	if (upa->obstructed > 0)
3111 		printf("File paths obstructed by a non-regular file: %d\n",
3112 		    upa->obstructed);
3113 	if (upa->missing > 0)
3114 		printf("Files which had incoming changes but could not be "
3115 		    "found in the work tree: %d\n", upa->missing);
3116 	if (upa->not_deleted > 0)
3117 		printf("Files not deleted due to differences in deleted "
3118 		    "content: %d\n", upa->not_deleted);
3119 	if (upa->unversioned > 0)
3120 		printf("Files not merged because an unversioned file was "
3121 		    "found in the work tree: %d\n", upa->unversioned);
3122 }
3123 
3124 __dead static void
3125 usage_update(void)
3126 {
3127 	fprintf(stderr, "usage: %s update [-b branch] [-c commit] [-q] "
3128 	    "[path ...]\n",
3129 	    getprogname());
3130 	exit(1);
3131 }
3132 
3133 static const struct got_error *
3134 update_progress(void *arg, unsigned char status, const char *path)
3135 {
3136 	struct got_update_progress_arg *upa = arg;
3137 
3138 	if (status == GOT_STATUS_EXISTS ||
3139 	    status == GOT_STATUS_BASE_REF_ERR)
3140 		return NULL;
3141 
3142 	upa->did_something = 1;
3143 
3144 	/* Base commit bump happens silently. */
3145 	if (status == GOT_STATUS_BUMP_BASE)
3146 		return NULL;
3147 
3148 	if (status == GOT_STATUS_CONFLICT)
3149 		upa->conflicts++;
3150 	if (status == GOT_STATUS_OBSTRUCTED)
3151 		upa->obstructed++;
3152 	if (status == GOT_STATUS_CANNOT_UPDATE)
3153 		upa->not_updated++;
3154 	if (status == GOT_STATUS_MISSING)
3155 		upa->missing++;
3156 	if (status == GOT_STATUS_CANNOT_DELETE)
3157 		upa->not_deleted++;
3158 	if (status == GOT_STATUS_UNVERSIONED)
3159 		upa->unversioned++;
3160 
3161 	while (path[0] == '/')
3162 		path++;
3163 	if (upa->verbosity >= 0)
3164 		printf("%c  %s\n", status, path);
3165 
3166 	return NULL;
3167 }
3168 
3169 static const struct got_error *
3170 switch_head_ref(struct got_reference *head_ref,
3171     struct got_object_id *commit_id, struct got_worktree *worktree,
3172     struct got_repository *repo)
3173 {
3174 	const struct got_error *err = NULL;
3175 	char *base_id_str;
3176 	int ref_has_moved = 0;
3177 
3178 	/* Trivial case: switching between two different references. */
3179 	if (strcmp(got_ref_get_name(head_ref),
3180 	    got_worktree_get_head_ref_name(worktree)) != 0) {
3181 		printf("Switching work tree from %s to %s\n",
3182 		    got_worktree_get_head_ref_name(worktree),
3183 		    got_ref_get_name(head_ref));
3184 		return got_worktree_set_head_ref(worktree, head_ref);
3185 	}
3186 
3187 	err = check_linear_ancestry(commit_id,
3188 	    got_worktree_get_base_commit_id(worktree), 0, repo);
3189 	if (err) {
3190 		if (err->code != GOT_ERR_ANCESTRY)
3191 			return err;
3192 		ref_has_moved = 1;
3193 	}
3194 	if (!ref_has_moved)
3195 		return NULL;
3196 
3197 	/* Switching to a rebased branch with the same reference name. */
3198 	err = got_object_id_str(&base_id_str,
3199 	    got_worktree_get_base_commit_id(worktree));
3200 	if (err)
3201 		return err;
3202 	printf("Reference %s now points at a different branch\n",
3203 	    got_worktree_get_head_ref_name(worktree));
3204 	printf("Switching work tree from %s to %s\n", base_id_str,
3205 	    got_worktree_get_head_ref_name(worktree));
3206 	return NULL;
3207 }
3208 
3209 static const struct got_error *
3210 check_rebase_or_histedit_in_progress(struct got_worktree *worktree)
3211 {
3212 	const struct got_error *err;
3213 	int in_progress;
3214 
3215 	err = got_worktree_rebase_in_progress(&in_progress, worktree);
3216 	if (err)
3217 		return err;
3218 	if (in_progress)
3219 		return got_error(GOT_ERR_REBASING);
3220 
3221 	err = got_worktree_histedit_in_progress(&in_progress, worktree);
3222 	if (err)
3223 		return err;
3224 	if (in_progress)
3225 		return got_error(GOT_ERR_HISTEDIT_BUSY);
3226 
3227 	return NULL;
3228 }
3229 
3230 static const struct got_error *
3231 check_merge_in_progress(struct got_worktree *worktree,
3232     struct got_repository *repo)
3233 {
3234 	const struct got_error *err;
3235 	int in_progress;
3236 
3237 	err = got_worktree_merge_in_progress(&in_progress, worktree, repo);
3238 	if (err)
3239 		return err;
3240 	if (in_progress)
3241 		return got_error(GOT_ERR_MERGE_BUSY);
3242 
3243 	return NULL;
3244 }
3245 
3246 static const struct got_error *
3247 get_worktree_paths_from_argv(struct got_pathlist_head *paths, int argc,
3248     char *argv[], struct got_worktree *worktree)
3249 {
3250 	const struct got_error *err = NULL;
3251 	char *path;
3252 	struct got_pathlist_entry *new;
3253 	int i;
3254 
3255 	if (argc == 0) {
3256 		path = strdup("");
3257 		if (path == NULL)
3258 			return got_error_from_errno("strdup");
3259 		return got_pathlist_append(paths, path, NULL);
3260 	}
3261 
3262 	for (i = 0; i < argc; i++) {
3263 		err = got_worktree_resolve_path(&path, worktree, argv[i]);
3264 		if (err)
3265 			break;
3266 		err = got_pathlist_insert(&new, paths, path, NULL);
3267 		if (err || new == NULL /* duplicate */) {
3268 			free(path);
3269 			if (err)
3270 				break;
3271 		}
3272 	}
3273 
3274 	return err;
3275 }
3276 
3277 static const struct got_error *
3278 wrap_not_worktree_error(const struct got_error *orig_err,
3279     const char *cmdname, const char *path)
3280 {
3281 	const struct got_error *err;
3282 	struct got_repository *repo;
3283 	static char msg[512];
3284 
3285 	err = got_repo_open(&repo, path, NULL);
3286 	if (err)
3287 		return orig_err;
3288 
3289 	snprintf(msg, sizeof(msg),
3290 	    "'got %s' needs a work tree in addition to a git repository\n"
3291 	    "Work trees can be checked out from this Git repository with "
3292 	    "'got checkout'.\n"
3293 	    "The got(1) manual page contains more information.", cmdname);
3294 	err = got_error_msg(GOT_ERR_NOT_WORKTREE, msg);
3295 	got_repo_close(repo);
3296 	return err;
3297 }
3298 
3299 static const struct got_error *
3300 cmd_update(int argc, char *argv[])
3301 {
3302 	const struct got_error *error = NULL;
3303 	struct got_repository *repo = NULL;
3304 	struct got_worktree *worktree = NULL;
3305 	char *worktree_path = NULL;
3306 	struct got_object_id *commit_id = NULL;
3307 	char *commit_id_str = NULL;
3308 	const char *branch_name = NULL;
3309 	struct got_reference *head_ref = NULL;
3310 	struct got_pathlist_head paths;
3311 	struct got_pathlist_entry *pe;
3312 	int ch, verbosity = 0;
3313 	struct got_update_progress_arg upa;
3314 
3315 	TAILQ_INIT(&paths);
3316 
3317 	while ((ch = getopt(argc, argv, "b:c:q")) != -1) {
3318 		switch (ch) {
3319 		case 'b':
3320 			branch_name = optarg;
3321 			break;
3322 		case 'c':
3323 			commit_id_str = strdup(optarg);
3324 			if (commit_id_str == NULL)
3325 				return got_error_from_errno("strdup");
3326 			break;
3327 		case 'q':
3328 			verbosity = -1;
3329 			break;
3330 		default:
3331 			usage_update();
3332 			/* NOTREACHED */
3333 		}
3334 	}
3335 
3336 	argc -= optind;
3337 	argv += optind;
3338 
3339 #ifndef PROFILE
3340 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
3341 	    "unveil", NULL) == -1)
3342 		err(1, "pledge");
3343 #endif
3344 	worktree_path = getcwd(NULL, 0);
3345 	if (worktree_path == NULL) {
3346 		error = got_error_from_errno("getcwd");
3347 		goto done;
3348 	}
3349 	error = got_worktree_open(&worktree, worktree_path);
3350 	if (error) {
3351 		if (error->code == GOT_ERR_NOT_WORKTREE)
3352 			error = wrap_not_worktree_error(error, "update",
3353 			    worktree_path);
3354 		goto done;
3355 	}
3356 
3357 	error = check_rebase_or_histedit_in_progress(worktree);
3358 	if (error)
3359 		goto done;
3360 
3361 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
3362 	    NULL);
3363 	if (error != NULL)
3364 		goto done;
3365 
3366 	error = apply_unveil(got_repo_get_path(repo), 0,
3367 	    got_worktree_get_root_path(worktree));
3368 	if (error)
3369 		goto done;
3370 
3371 	error = check_merge_in_progress(worktree, repo);
3372 	if (error)
3373 		goto done;
3374 
3375 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
3376 	if (error)
3377 		goto done;
3378 
3379 	error = got_ref_open(&head_ref, repo, branch_name ? branch_name :
3380 	    got_worktree_get_head_ref_name(worktree), 0);
3381 	if (error != NULL)
3382 		goto done;
3383 	if (commit_id_str == NULL) {
3384 		error = got_ref_resolve(&commit_id, repo, head_ref);
3385 		if (error != NULL)
3386 			goto done;
3387 		error = got_object_id_str(&commit_id_str, commit_id);
3388 		if (error != NULL)
3389 			goto done;
3390 	} else {
3391 		struct got_reflist_head refs;
3392 		TAILQ_INIT(&refs);
3393 		error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name,
3394 		    NULL);
3395 		if (error)
3396 			goto done;
3397 		error = got_repo_match_object_id(&commit_id, NULL,
3398 		    commit_id_str, GOT_OBJ_TYPE_COMMIT, &refs, repo);
3399 		got_ref_list_free(&refs);
3400 		free(commit_id_str);
3401 		commit_id_str = NULL;
3402 		if (error)
3403 			goto done;
3404 		error = got_object_id_str(&commit_id_str, commit_id);
3405 		if (error)
3406 			goto done;
3407 	}
3408 
3409 	if (branch_name) {
3410 		struct got_object_id *head_commit_id;
3411 		TAILQ_FOREACH(pe, &paths, entry) {
3412 			if (pe->path_len == 0)
3413 				continue;
3414 			error = got_error_msg(GOT_ERR_BAD_PATH,
3415 			    "switching between branches requires that "
3416 			    "the entire work tree gets updated");
3417 			goto done;
3418 		}
3419 		error = got_ref_resolve(&head_commit_id, repo, head_ref);
3420 		if (error)
3421 			goto done;
3422 		error = check_linear_ancestry(commit_id, head_commit_id, 0,
3423 		    repo);
3424 		free(head_commit_id);
3425 		if (error != NULL)
3426 			goto done;
3427 		error = check_same_branch(commit_id, head_ref, NULL, repo);
3428 		if (error)
3429 			goto done;
3430 		error = switch_head_ref(head_ref, commit_id, worktree, repo);
3431 		if (error)
3432 			goto done;
3433 	} else {
3434 		error = check_linear_ancestry(commit_id,
3435 		    got_worktree_get_base_commit_id(worktree), 0, repo);
3436 		if (error != NULL) {
3437 			if (error->code == GOT_ERR_ANCESTRY)
3438 				error = got_error(GOT_ERR_BRANCH_MOVED);
3439 			goto done;
3440 		}
3441 		error = check_same_branch(commit_id, head_ref, NULL, repo);
3442 		if (error)
3443 			goto done;
3444 	}
3445 
3446 	if (got_object_id_cmp(got_worktree_get_base_commit_id(worktree),
3447 	    commit_id) != 0) {
3448 		error = got_worktree_set_base_commit_id(worktree, repo,
3449 		    commit_id);
3450 		if (error)
3451 			goto done;
3452 	}
3453 
3454 	memset(&upa, 0, sizeof(upa));
3455 	upa.verbosity = verbosity;
3456 	error = got_worktree_checkout_files(worktree, &paths, repo,
3457 	    update_progress, &upa, check_cancelled, NULL);
3458 	if (error != NULL)
3459 		goto done;
3460 
3461 	if (upa.did_something) {
3462 		printf("Updated to %s: %s\n",
3463 		    got_worktree_get_head_ref_name(worktree), commit_id_str);
3464 	} else
3465 		printf("Already up-to-date\n");
3466 	print_update_progress_stats(&upa);
3467 done:
3468 	free(worktree_path);
3469 	TAILQ_FOREACH(pe, &paths, entry)
3470 		free((char *)pe->path);
3471 	got_pathlist_free(&paths);
3472 	free(commit_id);
3473 	free(commit_id_str);
3474 	return error;
3475 }
3476 
3477 static const struct got_error *
3478 diff_blobs(struct got_object_id *blob_id1, struct got_object_id *blob_id2,
3479     const char *path, int diff_context, int ignore_whitespace,
3480     int force_text_diff, struct got_repository *repo)
3481 {
3482 	const struct got_error *err = NULL;
3483 	struct got_blob_object *blob1 = NULL, *blob2 = NULL;
3484 
3485 	if (blob_id1) {
3486 		err = got_object_open_as_blob(&blob1, repo, blob_id1, 8192);
3487 		if (err)
3488 			goto done;
3489 	}
3490 
3491 	err = got_object_open_as_blob(&blob2, repo, blob_id2, 8192);
3492 	if (err)
3493 		goto done;
3494 
3495 	while (path[0] == '/')
3496 		path++;
3497 	err = got_diff_blob(NULL, NULL, blob1, blob2, path, path,
3498 	    diff_context, ignore_whitespace, force_text_diff, stdout);
3499 done:
3500 	if (blob1)
3501 		got_object_blob_close(blob1);
3502 	got_object_blob_close(blob2);
3503 	return err;
3504 }
3505 
3506 static const struct got_error *
3507 diff_trees(struct got_object_id *tree_id1, struct got_object_id *tree_id2,
3508     const char *path, int diff_context, int ignore_whitespace,
3509     int force_text_diff, struct got_repository *repo)
3510 {
3511 	const struct got_error *err = NULL;
3512 	struct got_tree_object *tree1 = NULL, *tree2 = NULL;
3513 	struct got_diff_blob_output_unidiff_arg arg;
3514 
3515 	if (tree_id1) {
3516 		err = got_object_open_as_tree(&tree1, repo, tree_id1);
3517 		if (err)
3518 			goto done;
3519 	}
3520 
3521 	err = got_object_open_as_tree(&tree2, repo, tree_id2);
3522 	if (err)
3523 		goto done;
3524 
3525 	arg.diff_context = diff_context;
3526 	arg.ignore_whitespace = ignore_whitespace;
3527 	arg.force_text_diff = force_text_diff;
3528 	arg.outfile = stdout;
3529 	arg.line_offsets = NULL;
3530 	arg.nlines = 0;
3531 	while (path[0] == '/')
3532 		path++;
3533 	err = got_diff_tree(tree1, tree2, path, path, repo,
3534 	    got_diff_blob_output_unidiff, &arg, 1);
3535 done:
3536 	if (tree1)
3537 		got_object_tree_close(tree1);
3538 	if (tree2)
3539 		got_object_tree_close(tree2);
3540 	return err;
3541 }
3542 
3543 static const struct got_error *
3544 get_changed_paths(struct got_pathlist_head *paths,
3545     struct got_commit_object *commit, struct got_repository *repo)
3546 {
3547 	const struct got_error *err = NULL;
3548 	struct got_object_id *tree_id1 = NULL, *tree_id2 = NULL;
3549 	struct got_tree_object *tree1 = NULL, *tree2 = NULL;
3550 	struct got_object_qid *qid;
3551 
3552 	qid = STAILQ_FIRST(got_object_commit_get_parent_ids(commit));
3553 	if (qid != NULL) {
3554 		struct got_commit_object *pcommit;
3555 		err = got_object_open_as_commit(&pcommit, repo,
3556 		    qid->id);
3557 		if (err)
3558 			return err;
3559 
3560 		tree_id1 = got_object_id_dup(
3561 		    got_object_commit_get_tree_id(pcommit));
3562 		if (tree_id1 == NULL) {
3563 			got_object_commit_close(pcommit);
3564 			return got_error_from_errno("got_object_id_dup");
3565 		}
3566 		got_object_commit_close(pcommit);
3567 
3568 	}
3569 
3570 	if (tree_id1) {
3571 		err = got_object_open_as_tree(&tree1, repo, tree_id1);
3572 		if (err)
3573 			goto done;
3574 	}
3575 
3576 	tree_id2 = got_object_commit_get_tree_id(commit);
3577 	err = got_object_open_as_tree(&tree2, repo, tree_id2);
3578 	if (err)
3579 		goto done;
3580 
3581 	err = got_diff_tree(tree1, tree2, "", "", repo,
3582 	    got_diff_tree_collect_changed_paths, paths, 0);
3583 done:
3584 	if (tree1)
3585 		got_object_tree_close(tree1);
3586 	if (tree2)
3587 		got_object_tree_close(tree2);
3588 	free(tree_id1);
3589 	return err;
3590 }
3591 
3592 static const struct got_error *
3593 print_patch(struct got_commit_object *commit, struct got_object_id *id,
3594     const char *path, int diff_context, struct got_repository *repo)
3595 {
3596 	const struct got_error *err = NULL;
3597 	struct got_commit_object *pcommit = NULL;
3598 	char *id_str1 = NULL, *id_str2 = NULL;
3599 	struct got_object_id *obj_id1 = NULL, *obj_id2 = NULL;
3600 	struct got_object_qid *qid;
3601 
3602 	qid = STAILQ_FIRST(got_object_commit_get_parent_ids(commit));
3603 	if (qid != NULL) {
3604 		err = got_object_open_as_commit(&pcommit, repo,
3605 		    qid->id);
3606 		if (err)
3607 			return err;
3608 	}
3609 
3610 	if (path && path[0] != '\0') {
3611 		int obj_type;
3612 		err = got_object_id_by_path(&obj_id2, repo, id, path);
3613 		if (err)
3614 			goto done;
3615 		err = got_object_id_str(&id_str2, obj_id2);
3616 		if (err) {
3617 			free(obj_id2);
3618 			goto done;
3619 		}
3620 		if (pcommit) {
3621 			err = got_object_id_by_path(&obj_id1, repo,
3622 			    qid->id, path);
3623 			if (err) {
3624 				if (err->code != GOT_ERR_NO_TREE_ENTRY) {
3625 					free(obj_id2);
3626 					goto done;
3627 				}
3628 			} else {
3629 				err = got_object_id_str(&id_str1, obj_id1);
3630 				if (err) {
3631 					free(obj_id2);
3632 					goto done;
3633 				}
3634 			}
3635 		}
3636 		err = got_object_get_type(&obj_type, repo, obj_id2);
3637 		if (err) {
3638 			free(obj_id2);
3639 			goto done;
3640 		}
3641 		printf("diff %s %s\n", id_str1 ? id_str1 : "/dev/null", id_str2);
3642 		switch (obj_type) {
3643 		case GOT_OBJ_TYPE_BLOB:
3644 			err = diff_blobs(obj_id1, obj_id2, path, diff_context,
3645 			    0, 0, repo);
3646 			break;
3647 		case GOT_OBJ_TYPE_TREE:
3648 			err = diff_trees(obj_id1, obj_id2, path, diff_context,
3649 			    0, 0, repo);
3650 			break;
3651 		default:
3652 			err = got_error(GOT_ERR_OBJ_TYPE);
3653 			break;
3654 		}
3655 		free(obj_id1);
3656 		free(obj_id2);
3657 	} else {
3658 		obj_id2 = got_object_commit_get_tree_id(commit);
3659 		err = got_object_id_str(&id_str2, obj_id2);
3660 		if (err)
3661 			goto done;
3662 		if (pcommit) {
3663 			obj_id1 = got_object_commit_get_tree_id(pcommit);
3664 			err = got_object_id_str(&id_str1, obj_id1);
3665 			if (err)
3666 				goto done;
3667 		}
3668 		printf("diff %s %s\n", id_str1 ? id_str1 : "/dev/null",
3669 		    id_str2);
3670 		err = diff_trees(obj_id1, obj_id2, "", diff_context, 0, 0,
3671 		    repo);
3672 	}
3673 done:
3674 	free(id_str1);
3675 	free(id_str2);
3676 	if (pcommit)
3677 		got_object_commit_close(pcommit);
3678 	return err;
3679 }
3680 
3681 static char *
3682 get_datestr(time_t *time, char *datebuf)
3683 {
3684 	struct tm mytm, *tm;
3685 	char *p, *s;
3686 
3687 	tm = gmtime_r(time, &mytm);
3688 	if (tm == NULL)
3689 		return NULL;
3690 	s = asctime_r(tm, datebuf);
3691 	if (s == NULL)
3692 		return NULL;
3693 	p = strchr(s, '\n');
3694 	if (p)
3695 		*p = '\0';
3696 	return s;
3697 }
3698 
3699 static const struct got_error *
3700 match_logmsg(int *have_match, struct got_object_id *id,
3701     struct got_commit_object *commit, regex_t *regex)
3702 {
3703 	const struct got_error *err = NULL;
3704 	regmatch_t regmatch;
3705 	char *id_str = NULL, *logmsg = NULL;
3706 
3707 	*have_match = 0;
3708 
3709 	err = got_object_id_str(&id_str, id);
3710 	if (err)
3711 		return err;
3712 
3713 	err = got_object_commit_get_logmsg(&logmsg, commit);
3714 	if (err)
3715 		goto done;
3716 
3717 	if (regexec(regex, logmsg, 1, &regmatch, 0) == 0)
3718 		*have_match = 1;
3719 done:
3720 	free(id_str);
3721 	free(logmsg);
3722 	return err;
3723 }
3724 
3725 static void
3726 match_changed_paths(int *have_match, struct got_pathlist_head *changed_paths,
3727     regex_t *regex)
3728 {
3729 	regmatch_t regmatch;
3730 	struct got_pathlist_entry *pe;
3731 
3732 	*have_match = 0;
3733 
3734 	TAILQ_FOREACH(pe, changed_paths, entry) {
3735 		if (regexec(regex, pe->path, 1, &regmatch, 0) == 0) {
3736 			*have_match = 1;
3737 			break;
3738 		}
3739 	}
3740 }
3741 
3742 #define GOT_COMMIT_SEP_STR "-----------------------------------------------\n"
3743 
3744 static const struct got_error*
3745 build_refs_str(char **refs_str, struct got_reflist_head *refs,
3746     struct got_object_id *id, struct got_repository *repo)
3747 {
3748 	static const struct got_error *err = NULL;
3749 	struct got_reflist_entry *re;
3750 	char *s;
3751 	const char *name;
3752 
3753 	*refs_str = NULL;
3754 
3755 	TAILQ_FOREACH(re, refs, entry) {
3756 		struct got_tag_object *tag = NULL;
3757 		struct got_object_id *ref_id;
3758 		int cmp;
3759 
3760 		name = got_ref_get_name(re->ref);
3761 		if (strcmp(name, GOT_REF_HEAD) == 0)
3762 			continue;
3763 		if (strncmp(name, "refs/", 5) == 0)
3764 			name += 5;
3765 		if (strncmp(name, "got/", 4) == 0)
3766 			continue;
3767 		if (strncmp(name, "heads/", 6) == 0)
3768 			name += 6;
3769 		if (strncmp(name, "remotes/", 8) == 0) {
3770 			name += 8;
3771 			s = strstr(name, "/" GOT_REF_HEAD);
3772 			if (s != NULL && s[strlen(s)] == '\0')
3773 				continue;
3774 		}
3775 		err = got_ref_resolve(&ref_id, repo, re->ref);
3776 		if (err)
3777 			break;
3778 		if (strncmp(name, "tags/", 5) == 0) {
3779 			err = got_object_open_as_tag(&tag, repo, ref_id);
3780 			if (err) {
3781 				if (err->code != GOT_ERR_OBJ_TYPE) {
3782 					free(ref_id);
3783 					break;
3784 				}
3785 				/* Ref points at something other than a tag. */
3786 				err = NULL;
3787 				tag = NULL;
3788 			}
3789 		}
3790 		cmp = got_object_id_cmp(tag ?
3791 		    got_object_tag_get_object_id(tag) : ref_id, id);
3792 		free(ref_id);
3793 		if (tag)
3794 			got_object_tag_close(tag);
3795 		if (cmp != 0)
3796 			continue;
3797 		s = *refs_str;
3798 		if (asprintf(refs_str, "%s%s%s", s ? s : "",
3799 		    s ? ", " : "", name) == -1) {
3800 			err = got_error_from_errno("asprintf");
3801 			free(s);
3802 			*refs_str = NULL;
3803 			break;
3804 		}
3805 		free(s);
3806 	}
3807 
3808 	return err;
3809 }
3810 
3811 static const struct got_error *
3812 print_commit(struct got_commit_object *commit, struct got_object_id *id,
3813     struct got_repository *repo, const char *path,
3814     struct got_pathlist_head *changed_paths, int show_patch,
3815     int diff_context, struct got_reflist_object_id_map *refs_idmap,
3816     const char *custom_refs_str)
3817 {
3818 	const struct got_error *err = NULL;
3819 	char *id_str, *datestr, *logmsg0, *logmsg, *line;
3820 	char datebuf[26];
3821 	time_t committer_time;
3822 	const char *author, *committer;
3823 	char *refs_str = NULL;
3824 
3825 	err = got_object_id_str(&id_str, id);
3826 	if (err)
3827 		return err;
3828 
3829 	if (custom_refs_str == NULL) {
3830 		struct got_reflist_head *refs;
3831 		refs = got_reflist_object_id_map_lookup(refs_idmap, id);
3832 		if (refs) {
3833 			err = build_refs_str(&refs_str, refs, id, repo);
3834 			if (err)
3835 				goto done;
3836 		}
3837 	}
3838 
3839 	printf(GOT_COMMIT_SEP_STR);
3840 	if (custom_refs_str)
3841 		printf("commit %s (%s)\n", id_str, custom_refs_str); 
3842 	else
3843 		printf("commit %s%s%s%s\n", id_str, refs_str ? " (" : "",
3844 		    refs_str ? refs_str : "", refs_str ? ")" : "");
3845 	free(id_str);
3846 	id_str = NULL;
3847 	free(refs_str);
3848 	refs_str = NULL;
3849 	printf("from: %s\n", got_object_commit_get_author(commit));
3850 	committer_time = got_object_commit_get_committer_time(commit);
3851 	datestr = get_datestr(&committer_time, datebuf);
3852 	if (datestr)
3853 		printf("date: %s UTC\n", datestr);
3854 	author = got_object_commit_get_author(commit);
3855 	committer = got_object_commit_get_committer(commit);
3856 	if (strcmp(author, committer) != 0)
3857 		printf("via: %s\n", committer);
3858 	if (got_object_commit_get_nparents(commit) > 1) {
3859 		const struct got_object_id_queue *parent_ids;
3860 		struct got_object_qid *qid;
3861 		int n = 1;
3862 		parent_ids = got_object_commit_get_parent_ids(commit);
3863 		STAILQ_FOREACH(qid, parent_ids, entry) {
3864 			err = got_object_id_str(&id_str, qid->id);
3865 			if (err)
3866 				goto done;
3867 			printf("parent %d: %s\n", n++, id_str);
3868 			free(id_str);
3869 			id_str = NULL;
3870 		}
3871 	}
3872 
3873 	err = got_object_commit_get_logmsg(&logmsg0, commit);
3874 	if (err)
3875 		goto done;
3876 
3877 	logmsg = logmsg0;
3878 	do {
3879 		line = strsep(&logmsg, "\n");
3880 		if (line)
3881 			printf(" %s\n", line);
3882 	} while (line);
3883 	free(logmsg0);
3884 
3885 	if (changed_paths) {
3886 		struct got_pathlist_entry *pe;
3887 		TAILQ_FOREACH(pe, changed_paths, entry) {
3888 			struct got_diff_changed_path *cp = pe->data;
3889 			printf(" %c  %s\n", cp->status, pe->path);
3890 		}
3891 		printf("\n");
3892 	}
3893 	if (show_patch) {
3894 		err = print_patch(commit, id, path, diff_context, repo);
3895 		if (err == 0)
3896 			printf("\n");
3897 	}
3898 
3899 	if (fflush(stdout) != 0 && err == NULL)
3900 		err = got_error_from_errno("fflush");
3901 done:
3902 	free(id_str);
3903 	free(refs_str);
3904 	return err;
3905 }
3906 
3907 static const struct got_error *
3908 print_commits(struct got_object_id *root_id, struct got_object_id *end_id,
3909     struct got_repository *repo, const char *path, int show_changed_paths,
3910     int show_patch, const char *search_pattern, int diff_context, int limit,
3911     int log_branches, int reverse_display_order,
3912     struct got_reflist_object_id_map *refs_idmap)
3913 {
3914 	const struct got_error *err;
3915 	struct got_commit_graph *graph;
3916 	regex_t regex;
3917 	int have_match;
3918 	struct got_object_id_queue reversed_commits;
3919 	struct got_object_qid *qid;
3920 	struct got_commit_object *commit;
3921 	struct got_pathlist_head changed_paths;
3922 	struct got_pathlist_entry *pe;
3923 
3924 	STAILQ_INIT(&reversed_commits);
3925 	TAILQ_INIT(&changed_paths);
3926 
3927 	if (search_pattern && regcomp(&regex, search_pattern,
3928 	    REG_EXTENDED | REG_NOSUB | REG_NEWLINE))
3929 		return got_error_msg(GOT_ERR_REGEX, search_pattern);
3930 
3931 	err = got_commit_graph_open(&graph, path, !log_branches);
3932 	if (err)
3933 		return err;
3934 	err = got_commit_graph_iter_start(graph, root_id, repo,
3935 	    check_cancelled, NULL);
3936 	if (err)
3937 		goto done;
3938 	for (;;) {
3939 		struct got_object_id *id;
3940 
3941 		if (sigint_received || sigpipe_received)
3942 			break;
3943 
3944 		err = got_commit_graph_iter_next(&id, graph, repo,
3945 		    check_cancelled, NULL);
3946 		if (err) {
3947 			if (err->code == GOT_ERR_ITER_COMPLETED)
3948 				err = NULL;
3949 			break;
3950 		}
3951 		if (id == NULL)
3952 			break;
3953 
3954 		err = got_object_open_as_commit(&commit, repo, id);
3955 		if (err)
3956 			break;
3957 
3958 		if (show_changed_paths && !reverse_display_order) {
3959 			err = get_changed_paths(&changed_paths, commit, repo);
3960 			if (err)
3961 				break;
3962 		}
3963 
3964 		if (search_pattern) {
3965 			err = match_logmsg(&have_match, id, commit, &regex);
3966 			if (err) {
3967 				got_object_commit_close(commit);
3968 				break;
3969 			}
3970 			if (have_match == 0 && show_changed_paths)
3971 				match_changed_paths(&have_match,
3972 				    &changed_paths, &regex);
3973 			if (have_match == 0) {
3974 				got_object_commit_close(commit);
3975 				TAILQ_FOREACH(pe, &changed_paths, entry) {
3976 					free((char *)pe->path);
3977 					free(pe->data);
3978 				}
3979 				got_pathlist_free(&changed_paths);
3980 				continue;
3981 			}
3982 		}
3983 
3984 		if (reverse_display_order) {
3985 			err = got_object_qid_alloc(&qid, id);
3986 			if (err)
3987 				break;
3988 			STAILQ_INSERT_HEAD(&reversed_commits, qid, entry);
3989 			got_object_commit_close(commit);
3990 		} else {
3991 			err = print_commit(commit, id, repo, path,
3992 			    show_changed_paths ? &changed_paths : NULL,
3993 			    show_patch, diff_context, refs_idmap, NULL);
3994 			got_object_commit_close(commit);
3995 			if (err)
3996 				break;
3997 		}
3998 		if ((limit && --limit == 0) ||
3999 		    (end_id && got_object_id_cmp(id, end_id) == 0))
4000 			break;
4001 
4002 		TAILQ_FOREACH(pe, &changed_paths, entry) {
4003 			free((char *)pe->path);
4004 			free(pe->data);
4005 		}
4006 		got_pathlist_free(&changed_paths);
4007 	}
4008 	if (reverse_display_order) {
4009 		STAILQ_FOREACH(qid, &reversed_commits, entry) {
4010 			err = got_object_open_as_commit(&commit, repo, qid->id);
4011 			if (err)
4012 				break;
4013 			if (show_changed_paths) {
4014 				err = get_changed_paths(&changed_paths,
4015 				    commit, repo);
4016 				if (err)
4017 					break;
4018 			}
4019 			err = print_commit(commit, qid->id, repo, path,
4020 			    show_changed_paths ? &changed_paths : NULL,
4021 			    show_patch, diff_context, refs_idmap, NULL);
4022 			got_object_commit_close(commit);
4023 			if (err)
4024 				break;
4025 			TAILQ_FOREACH(pe, &changed_paths, entry) {
4026 				free((char *)pe->path);
4027 				free(pe->data);
4028 			}
4029 			got_pathlist_free(&changed_paths);
4030 		}
4031 	}
4032 done:
4033 	while (!STAILQ_EMPTY(&reversed_commits)) {
4034 		qid = STAILQ_FIRST(&reversed_commits);
4035 		STAILQ_REMOVE_HEAD(&reversed_commits, entry);
4036 		got_object_qid_free(qid);
4037 	}
4038 	TAILQ_FOREACH(pe, &changed_paths, entry) {
4039 		free((char *)pe->path);
4040 		free(pe->data);
4041 	}
4042 	got_pathlist_free(&changed_paths);
4043 	if (search_pattern)
4044 		regfree(&regex);
4045 	got_commit_graph_close(graph);
4046 	return err;
4047 }
4048 
4049 __dead static void
4050 usage_log(void)
4051 {
4052 	fprintf(stderr, "usage: %s log [-b] [-c commit] [-C number] [ -l N ] "
4053 	    "[-p] [-P] [-x commit] [-s search-pattern] [-r repository-path] "
4054 	    "[-R] [path]\n", getprogname());
4055 	exit(1);
4056 }
4057 
4058 static int
4059 get_default_log_limit(void)
4060 {
4061 	const char *got_default_log_limit;
4062 	long long n;
4063 	const char *errstr;
4064 
4065 	got_default_log_limit = getenv("GOT_LOG_DEFAULT_LIMIT");
4066 	if (got_default_log_limit == NULL)
4067 		return 0;
4068 	n = strtonum(got_default_log_limit, 0, INT_MAX, &errstr);
4069 	if (errstr != NULL)
4070 		return 0;
4071 	return n;
4072 }
4073 
4074 static const struct got_error *
4075 cmd_log(int argc, char *argv[])
4076 {
4077 	const struct got_error *error;
4078 	struct got_repository *repo = NULL;
4079 	struct got_worktree *worktree = NULL;
4080 	struct got_object_id *start_id = NULL, *end_id = NULL;
4081 	char *repo_path = NULL, *path = NULL, *cwd = NULL, *in_repo_path = NULL;
4082 	const char *start_commit = NULL, *end_commit = NULL;
4083 	const char *search_pattern = NULL;
4084 	int diff_context = -1, ch;
4085 	int show_changed_paths = 0, show_patch = 0, limit = 0, log_branches = 0;
4086 	int reverse_display_order = 0;
4087 	const char *errstr;
4088 	struct got_reflist_head refs;
4089 	struct got_reflist_object_id_map *refs_idmap = NULL;
4090 
4091 	TAILQ_INIT(&refs);
4092 
4093 #ifndef PROFILE
4094 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
4095 	    NULL)
4096 	    == -1)
4097 		err(1, "pledge");
4098 #endif
4099 
4100 	limit = get_default_log_limit();
4101 
4102 	while ((ch = getopt(argc, argv, "bpPc:C:l:r:Rs:x:")) != -1) {
4103 		switch (ch) {
4104 		case 'p':
4105 			show_patch = 1;
4106 			break;
4107 		case 'P':
4108 			show_changed_paths = 1;
4109 			break;
4110 		case 'c':
4111 			start_commit = optarg;
4112 			break;
4113 		case 'C':
4114 			diff_context = strtonum(optarg, 0, GOT_DIFF_MAX_CONTEXT,
4115 			    &errstr);
4116 			if (errstr != NULL)
4117 				errx(1, "number of context lines is %s: %s",
4118 				    errstr, optarg);
4119 			break;
4120 		case 'l':
4121 			limit = strtonum(optarg, 0, INT_MAX, &errstr);
4122 			if (errstr != NULL)
4123 				errx(1, "number of commits is %s: %s",
4124 				    errstr, optarg);
4125 			break;
4126 		case 'b':
4127 			log_branches = 1;
4128 			break;
4129 		case 'r':
4130 			repo_path = realpath(optarg, NULL);
4131 			if (repo_path == NULL)
4132 				return got_error_from_errno2("realpath",
4133 				    optarg);
4134 			got_path_strip_trailing_slashes(repo_path);
4135 			break;
4136 		case 'R':
4137 			reverse_display_order = 1;
4138 			break;
4139 		case 's':
4140 			search_pattern = optarg;
4141 			break;
4142 		case 'x':
4143 			end_commit = optarg;
4144 			break;
4145 		default:
4146 			usage_log();
4147 			/* NOTREACHED */
4148 		}
4149 	}
4150 
4151 	argc -= optind;
4152 	argv += optind;
4153 
4154 	if (diff_context == -1)
4155 		diff_context = 3;
4156 	else if (!show_patch)
4157 		errx(1, "-C requires -p");
4158 
4159 	cwd = getcwd(NULL, 0);
4160 	if (cwd == NULL) {
4161 		error = got_error_from_errno("getcwd");
4162 		goto done;
4163 	}
4164 
4165 	if (repo_path == NULL) {
4166 		error = got_worktree_open(&worktree, cwd);
4167 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
4168 			goto done;
4169 		error = NULL;
4170 	}
4171 
4172 	if (argc == 1) {
4173 		if (worktree) {
4174 			error = got_worktree_resolve_path(&path, worktree,
4175 			    argv[0]);
4176 			if (error)
4177 				goto done;
4178 		} else {
4179 			path = strdup(argv[0]);
4180 			if (path == NULL) {
4181 				error = got_error_from_errno("strdup");
4182 				goto done;
4183 			}
4184 		}
4185 	} else if (argc != 0)
4186 		usage_log();
4187 
4188 	if (repo_path == NULL) {
4189 		repo_path = worktree ?
4190 		    strdup(got_worktree_get_repo_path(worktree)) : strdup(cwd);
4191 	}
4192 	if (repo_path == NULL) {
4193 		error = got_error_from_errno("strdup");
4194 		goto done;
4195 	}
4196 
4197 	error = got_repo_open(&repo, repo_path, NULL);
4198 	if (error != NULL)
4199 		goto done;
4200 
4201 	error = apply_unveil(got_repo_get_path(repo), 1,
4202 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
4203 	if (error)
4204 		goto done;
4205 
4206 	error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name, NULL);
4207 	if (error)
4208 		goto done;
4209 
4210 	error = got_reflist_object_id_map_create(&refs_idmap, &refs, repo);
4211 	if (error)
4212 		goto done;
4213 
4214 	if (start_commit == NULL) {
4215 		struct got_reference *head_ref;
4216 		struct got_commit_object *commit = NULL;
4217 		error = got_ref_open(&head_ref, repo,
4218 		    worktree ? got_worktree_get_head_ref_name(worktree)
4219 		    : GOT_REF_HEAD, 0);
4220 		if (error != NULL)
4221 			goto done;
4222 		error = got_ref_resolve(&start_id, repo, head_ref);
4223 		got_ref_close(head_ref);
4224 		if (error != NULL)
4225 			goto done;
4226 		error = got_object_open_as_commit(&commit, repo,
4227 		    start_id);
4228 		if (error != NULL)
4229 			goto done;
4230 		got_object_commit_close(commit);
4231 	} else {
4232 		error = got_repo_match_object_id(&start_id, NULL,
4233 		    start_commit, GOT_OBJ_TYPE_COMMIT, &refs, repo);
4234 		if (error != NULL)
4235 			goto done;
4236 	}
4237 	if (end_commit != NULL) {
4238 		error = got_repo_match_object_id(&end_id, NULL,
4239 		    end_commit, GOT_OBJ_TYPE_COMMIT, &refs, repo);
4240 		if (error != NULL)
4241 			goto done;
4242 	}
4243 
4244 	if (worktree) {
4245 		/*
4246 		 * If a path was specified on the command line it was resolved
4247 		 * to a path in the work tree above. Prepend the work tree's
4248 		 * path prefix to obtain the corresponding in-repository path.
4249 		 */
4250 		if (path) {
4251 			const char *prefix;
4252 			prefix = got_worktree_get_path_prefix(worktree);
4253 			if (asprintf(&in_repo_path, "%s%s%s", prefix,
4254 			    (path[0] != '\0') ? "/" : "", path) == -1) {
4255 				error = got_error_from_errno("asprintf");
4256 				goto done;
4257 			}
4258 		}
4259 	} else
4260 		error = got_repo_map_path(&in_repo_path, repo,
4261 		    path ? path : "");
4262 	if (error != NULL)
4263 		goto done;
4264 	if (in_repo_path) {
4265 		free(path);
4266 		path = in_repo_path;
4267 	}
4268 
4269 	if (worktree) {
4270 		/* Release work tree lock. */
4271 		got_worktree_close(worktree);
4272 		worktree = NULL;
4273 	}
4274 
4275 	error = print_commits(start_id, end_id, repo, path ? path : "",
4276 	    show_changed_paths, show_patch, search_pattern, diff_context,
4277 	    limit, log_branches, reverse_display_order, refs_idmap);
4278 done:
4279 	free(path);
4280 	free(repo_path);
4281 	free(cwd);
4282 	if (worktree)
4283 		got_worktree_close(worktree);
4284 	if (repo) {
4285 		const struct got_error *close_err = got_repo_close(repo);
4286 		if (error == NULL)
4287 			error = close_err;
4288 	}
4289 	if (refs_idmap)
4290 		got_reflist_object_id_map_free(refs_idmap);
4291 	got_ref_list_free(&refs);
4292 	return error;
4293 }
4294 
4295 __dead static void
4296 usage_diff(void)
4297 {
4298 	fprintf(stderr, "usage: %s diff [-a] [-c commit] [-C number] "
4299 	    "[-r repository-path] [-s] [-w] [-P] "
4300 	    "[object1 object2 | path ...]\n", getprogname());
4301 	exit(1);
4302 }
4303 
4304 struct print_diff_arg {
4305 	struct got_repository *repo;
4306 	struct got_worktree *worktree;
4307 	int diff_context;
4308 	const char *id_str;
4309 	int header_shown;
4310 	int diff_staged;
4311 	int ignore_whitespace;
4312 	int force_text_diff;
4313 };
4314 
4315 /*
4316  * Create a file which contains the target path of a symlink so we can feed
4317  * it as content to the diff engine.
4318  */
4319 static const struct got_error *
4320 get_symlink_target_file(int *fd, int dirfd, const char *de_name,
4321     const char *abspath)
4322 {
4323 	const struct got_error *err = NULL;
4324 	char target_path[PATH_MAX];
4325 	ssize_t target_len, outlen;
4326 
4327 	*fd = -1;
4328 
4329 	if (dirfd != -1) {
4330 		target_len = readlinkat(dirfd, de_name, target_path, PATH_MAX);
4331 		if (target_len == -1)
4332 			return got_error_from_errno2("readlinkat", abspath);
4333 	} else {
4334 		target_len = readlink(abspath, target_path, PATH_MAX);
4335 		if (target_len == -1)
4336 			return got_error_from_errno2("readlink", abspath);
4337 	}
4338 
4339 	*fd = got_opentempfd();
4340 	if (*fd == -1)
4341 		return got_error_from_errno("got_opentempfd");
4342 
4343 	outlen = write(*fd, target_path, target_len);
4344 	if (outlen == -1) {
4345 		err = got_error_from_errno("got_opentempfd");
4346 		goto done;
4347 	}
4348 
4349 	if (lseek(*fd, 0, SEEK_SET) == -1) {
4350 		err = got_error_from_errno2("lseek", abspath);
4351 		goto done;
4352 	}
4353 done:
4354 	if (err) {
4355 		close(*fd);
4356 		*fd = -1;
4357 	}
4358 	return err;
4359 }
4360 
4361 static const struct got_error *
4362 print_diff(void *arg, unsigned char status, unsigned char staged_status,
4363     const char *path, struct got_object_id *blob_id,
4364     struct got_object_id *staged_blob_id, struct got_object_id *commit_id,
4365     int dirfd, const char *de_name)
4366 {
4367 	struct print_diff_arg *a = arg;
4368 	const struct got_error *err = NULL;
4369 	struct got_blob_object *blob1 = NULL;
4370 	int fd = -1;
4371 	FILE *f2 = NULL;
4372 	char *abspath = NULL, *label1 = NULL;
4373 	struct stat sb;
4374 
4375 	if (a->diff_staged) {
4376 		if (staged_status != GOT_STATUS_MODIFY &&
4377 		    staged_status != GOT_STATUS_ADD &&
4378 		    staged_status != GOT_STATUS_DELETE)
4379 			return NULL;
4380 	} else {
4381 		if (staged_status == GOT_STATUS_DELETE)
4382 			return NULL;
4383 		if (status == GOT_STATUS_NONEXISTENT)
4384 			return got_error_set_errno(ENOENT, path);
4385 		if (status != GOT_STATUS_MODIFY &&
4386 		    status != GOT_STATUS_ADD &&
4387 		    status != GOT_STATUS_DELETE &&
4388 		    status != GOT_STATUS_CONFLICT)
4389 			return NULL;
4390 	}
4391 
4392 	if (!a->header_shown) {
4393 		printf("diff %s %s%s\n", a->id_str,
4394 		    got_worktree_get_root_path(a->worktree),
4395 		    a->diff_staged ? " (staged changes)" : "");
4396 		a->header_shown = 1;
4397 	}
4398 
4399 	if (a->diff_staged) {
4400 		const char *label1 = NULL, *label2 = NULL;
4401 		switch (staged_status) {
4402 		case GOT_STATUS_MODIFY:
4403 			label1 = path;
4404 			label2 = path;
4405 			break;
4406 		case GOT_STATUS_ADD:
4407 			label2 = path;
4408 			break;
4409 		case GOT_STATUS_DELETE:
4410 			label1 = path;
4411 			break;
4412 		default:
4413 			return got_error(GOT_ERR_FILE_STATUS);
4414 		}
4415 		return got_diff_objects_as_blobs(NULL, NULL, blob_id,
4416 		    staged_blob_id, label1, label2, a->diff_context,
4417 		    a->ignore_whitespace, a->force_text_diff, a->repo, stdout);
4418 	}
4419 
4420 	if (staged_status == GOT_STATUS_ADD ||
4421 	    staged_status == GOT_STATUS_MODIFY) {
4422 		char *id_str;
4423 		err = got_object_open_as_blob(&blob1, a->repo, staged_blob_id,
4424 		    8192);
4425 		if (err)
4426 			goto done;
4427 		err = got_object_id_str(&id_str, staged_blob_id);
4428 		if (err)
4429 			goto done;
4430 		if (asprintf(&label1, "%s (staged)", id_str) == -1) {
4431 			err = got_error_from_errno("asprintf");
4432 			free(id_str);
4433 			goto done;
4434 		}
4435 		free(id_str);
4436 	} else if (status != GOT_STATUS_ADD) {
4437 		err = got_object_open_as_blob(&blob1, a->repo, blob_id, 8192);
4438 		if (err)
4439 			goto done;
4440 	}
4441 
4442 	if (status != GOT_STATUS_DELETE) {
4443 		if (asprintf(&abspath, "%s/%s",
4444 		    got_worktree_get_root_path(a->worktree), path) == -1) {
4445 			err = got_error_from_errno("asprintf");
4446 			goto done;
4447 		}
4448 
4449 		if (dirfd != -1) {
4450 			fd = openat(dirfd, de_name,
4451 			    O_RDONLY | O_NOFOLLOW | O_CLOEXEC);
4452 			if (fd == -1) {
4453 				if (!got_err_open_nofollow_on_symlink()) { 
4454 					err = got_error_from_errno2("openat",
4455 					    abspath);
4456 					goto done;
4457 				}
4458 				err = get_symlink_target_file(&fd, dirfd,
4459 				    de_name, abspath);
4460 				if (err)
4461 					goto done;
4462 			}
4463 		} else {
4464 			fd = open(abspath, O_RDONLY | O_NOFOLLOW | O_CLOEXEC);
4465 			if (fd == -1) {
4466 				if (!got_err_open_nofollow_on_symlink()) {
4467 					err = got_error_from_errno2("open",
4468 					    abspath);
4469 					goto done;
4470 				}
4471 				err = get_symlink_target_file(&fd, dirfd,
4472 				    de_name, abspath);
4473 				if (err)
4474 					goto done;
4475 			}
4476 		}
4477 		if (fstat(fd, &sb) == -1) {
4478 			err = got_error_from_errno2("fstat", abspath);
4479 			goto done;
4480 		}
4481 		f2 = fdopen(fd, "r");
4482 		if (f2 == NULL) {
4483 			err = got_error_from_errno2("fdopen", abspath);
4484 			goto done;
4485 		}
4486 		fd = -1;
4487 	} else
4488 		sb.st_size = 0;
4489 
4490 	err = got_diff_blob_file(blob1, label1, f2, sb.st_size, path,
4491 	    a->diff_context, a->ignore_whitespace, a->force_text_diff, stdout);
4492 done:
4493 	if (blob1)
4494 		got_object_blob_close(blob1);
4495 	if (f2 && fclose(f2) == EOF && err == NULL)
4496 		err = got_error_from_errno("fclose");
4497 	if (fd != -1 && close(fd) == -1 && err == NULL)
4498 		err = got_error_from_errno("close");
4499 	free(abspath);
4500 	return err;
4501 }
4502 
4503 static const struct got_error *
4504 cmd_diff(int argc, char *argv[])
4505 {
4506 	const struct got_error *error;
4507 	struct got_repository *repo = NULL;
4508 	struct got_worktree *worktree = NULL;
4509 	char *cwd = NULL, *repo_path = NULL;
4510 	const char *commit_args[2] = { NULL, NULL };
4511 	int ncommit_args = 0;
4512 	struct got_object_id *ids[2] = { NULL, NULL };
4513 	char *labels[2] = { NULL, NULL };
4514 	int type1 = GOT_OBJ_TYPE_ANY, type2 = GOT_OBJ_TYPE_ANY;
4515 	int diff_context = 3, diff_staged = 0, ignore_whitespace = 0, ch, i;
4516 	int force_text_diff = 0, force_path = 0, rflag = 0;
4517 	const char *errstr;
4518 	struct got_reflist_head refs;
4519 	struct got_pathlist_head paths;
4520 	struct got_pathlist_entry *pe;
4521 
4522 	TAILQ_INIT(&refs);
4523 	TAILQ_INIT(&paths);
4524 
4525 #ifndef PROFILE
4526 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
4527 	    NULL) == -1)
4528 		err(1, "pledge");
4529 #endif
4530 
4531 	while ((ch = getopt(argc, argv, "ac:C:r:swP")) != -1) {
4532 		switch (ch) {
4533 		case 'a':
4534 			force_text_diff = 1;
4535 			break;
4536 		case 'c':
4537 			if (ncommit_args >= 2)
4538 				errx(1, "too many -c options used");
4539 			commit_args[ncommit_args++] = optarg;
4540 			break;
4541 		case 'C':
4542 			diff_context = strtonum(optarg, 0, GOT_DIFF_MAX_CONTEXT,
4543 			    &errstr);
4544 			if (errstr != NULL)
4545 				errx(1, "number of context lines is %s: %s",
4546 				    errstr, optarg);
4547 			break;
4548 		case 'r':
4549 			repo_path = realpath(optarg, NULL);
4550 			if (repo_path == NULL)
4551 				return got_error_from_errno2("realpath",
4552 				    optarg);
4553 			got_path_strip_trailing_slashes(repo_path);
4554 			rflag = 1;
4555 			break;
4556 		case 's':
4557 			diff_staged = 1;
4558 			break;
4559 		case 'w':
4560 			ignore_whitespace = 1;
4561 			break;
4562 		case 'P':
4563 			force_path = 1;
4564 			break;
4565 		default:
4566 			usage_diff();
4567 			/* NOTREACHED */
4568 		}
4569 	}
4570 
4571 	argc -= optind;
4572 	argv += optind;
4573 
4574 	cwd = getcwd(NULL, 0);
4575 	if (cwd == NULL) {
4576 		error = got_error_from_errno("getcwd");
4577 		goto done;
4578 	}
4579 
4580 	if (repo_path == NULL) {
4581 		error = got_worktree_open(&worktree, cwd);
4582 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
4583 			goto done;
4584 		else
4585 			error = NULL;
4586 		if (worktree) {
4587 			repo_path =
4588 			    strdup(got_worktree_get_repo_path(worktree));
4589 			if (repo_path == NULL) {
4590 				error = got_error_from_errno("strdup");
4591 				goto done;
4592 			}
4593 		} else {
4594 			repo_path = strdup(cwd);
4595 			if (repo_path == NULL) {
4596 				error = got_error_from_errno("strdup");
4597 				goto done;
4598 			}
4599 		}
4600 	}
4601 
4602 	error = got_repo_open(&repo, repo_path, NULL);
4603 	free(repo_path);
4604 	if (error != NULL)
4605 		goto done;
4606 
4607 	if (rflag || worktree == NULL || ncommit_args > 0) {
4608 		if (force_path) {
4609 			error = got_error_msg(GOT_ERR_NOT_IMPL,
4610 			    "-P option can only be used when diffing "
4611 			    "a work tree");
4612 			goto done;
4613 		}
4614 		if (diff_staged) {
4615 			error = got_error_msg(GOT_ERR_NOT_IMPL,
4616 			    "-s option can only be used when diffing "
4617 			    "a work tree");
4618 			goto done;
4619 		}
4620 	}
4621 
4622 	error = apply_unveil(got_repo_get_path(repo), 1,
4623 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
4624 	if (error)
4625 		goto done;
4626 
4627 	if ((!force_path && argc == 2) || ncommit_args > 0) {
4628 		int obj_type = (ncommit_args > 0 ?
4629 		    GOT_OBJ_TYPE_COMMIT : GOT_OBJ_TYPE_ANY);
4630 		error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name,
4631 		    NULL);
4632 		if (error)
4633 			goto done;
4634 		for (i = 0; i < (ncommit_args > 0 ? ncommit_args : argc); i++) {
4635 			const char *arg;
4636 			if (ncommit_args > 0)
4637 				arg = commit_args[i];
4638 			else
4639 				arg = argv[i];
4640 			error = got_repo_match_object_id(&ids[i], &labels[i],
4641 			    arg, obj_type, &refs, repo);
4642 			if (error) {
4643 				if (error->code != GOT_ERR_NOT_REF &&
4644 				    error->code != GOT_ERR_NO_OBJ)
4645 					goto done;
4646 				if (ncommit_args > 0)
4647 					goto done;
4648 				error = NULL;
4649 				break;
4650 			}
4651 		}
4652 	}
4653 
4654 	if (ncommit_args == 0 && (ids[0] == NULL || ids[1] == NULL)) {
4655 		struct print_diff_arg arg;
4656 		char *id_str;
4657 
4658 		if (worktree == NULL) {
4659 			if (argc == 2 && ids[0] == NULL) {
4660 				error = got_error_path(argv[0], GOT_ERR_NO_OBJ);
4661 				goto done;
4662 			} else if (argc == 2 && ids[1] == NULL) {
4663 				error = got_error_path(argv[1], GOT_ERR_NO_OBJ);
4664 				goto done;
4665 			} else if (argc > 0) {
4666 				error = got_error_fmt(GOT_ERR_NOT_WORKTREE,
4667 				    "%s", "specified paths cannot be resolved");
4668 				goto done;
4669 			} else {
4670 				error = got_error(GOT_ERR_NOT_WORKTREE);
4671 				goto done;
4672 			}
4673 		}
4674 
4675 		error = get_worktree_paths_from_argv(&paths, argc, argv,
4676 		    worktree);
4677 		if (error)
4678 			goto done;
4679 
4680 		error = got_object_id_str(&id_str,
4681 		    got_worktree_get_base_commit_id(worktree));
4682 		if (error)
4683 			goto done;
4684 		arg.repo = repo;
4685 		arg.worktree = worktree;
4686 		arg.diff_context = diff_context;
4687 		arg.id_str = id_str;
4688 		arg.header_shown = 0;
4689 		arg.diff_staged = diff_staged;
4690 		arg.ignore_whitespace = ignore_whitespace;
4691 		arg.force_text_diff = force_text_diff;
4692 
4693 		error = got_worktree_status(worktree, &paths, repo, 0,
4694 		    print_diff, &arg, check_cancelled, NULL);
4695 		free(id_str);
4696 		goto done;
4697 	}
4698 
4699 	if (ncommit_args == 1) {
4700 		struct got_commit_object *commit;
4701 		error = got_object_open_as_commit(&commit, repo, ids[0]);
4702 		if (error)
4703 			goto done;
4704 
4705 		labels[1] = labels[0];
4706 		ids[1] = ids[0];
4707 		if (got_object_commit_get_nparents(commit) > 0) {
4708 			const struct got_object_id_queue *pids;
4709 			struct got_object_qid *pid;
4710 			pids = got_object_commit_get_parent_ids(commit);
4711 			pid = STAILQ_FIRST(pids);
4712 			ids[0] = got_object_id_dup(pid->id);
4713 			if (ids[0] == NULL) {
4714 				error = got_error_from_errno(
4715 				    "got_object_id_dup");
4716 				got_object_commit_close(commit);
4717 				goto done;
4718 			}
4719 			error = got_object_id_str(&labels[0], ids[0]);
4720 			if (error) {
4721 				got_object_commit_close(commit);
4722 				goto done;
4723 			}
4724 		} else {
4725 			ids[0] = NULL;
4726 			labels[0] = strdup("/dev/null");
4727 			if (labels[0] == NULL) {
4728 				error = got_error_from_errno("strdup");
4729 				got_object_commit_close(commit);
4730 				goto done;
4731 			}
4732 		}
4733 
4734 		got_object_commit_close(commit);
4735 	}
4736 
4737 	if (ncommit_args == 0 && argc > 2) {
4738 		error = got_error_msg(GOT_ERR_BAD_PATH,
4739 		    "path arguments cannot be used when diffing two objects");
4740 		goto done;
4741 	}
4742 
4743 	if (ids[0]) {
4744 		error = got_object_get_type(&type1, repo, ids[0]);
4745 		if (error)
4746 			goto done;
4747 	}
4748 
4749 	error = got_object_get_type(&type2, repo, ids[1]);
4750 	if (error)
4751 		goto done;
4752 	if (type1 != GOT_OBJ_TYPE_ANY && type1 != type2) {
4753 		error = got_error(GOT_ERR_OBJ_TYPE);
4754 		goto done;
4755 	}
4756 	if (type1 == GOT_OBJ_TYPE_BLOB && argc > 0) {
4757 		error = got_error_msg(GOT_ERR_OBJ_TYPE,
4758 		    "path arguments cannot be used when diffing blobs");
4759 		goto done;
4760 	}
4761 
4762 	for (i = 0; ncommit_args > 0 && i < argc; i++) {
4763 		char *in_repo_path;
4764 		struct got_pathlist_entry *new;
4765 		if (worktree) {
4766 			const char *prefix;
4767 			char *p;
4768 			error = got_worktree_resolve_path(&p, worktree,
4769 			    argv[i]);
4770 			if (error)
4771 				goto done;
4772 			prefix = got_worktree_get_path_prefix(worktree);
4773 			while (prefix[0] == '/')
4774 				prefix++;
4775 			if (asprintf(&in_repo_path, "%s%s%s", prefix,
4776 			    (p[0] != '\0' && prefix[0] != '\0') ? "/" : "",
4777 			    p) == -1) {
4778 				error = got_error_from_errno("asprintf");
4779 				free(p);
4780 				goto done;
4781 			}
4782 			free(p);
4783 		} else {
4784 			char *mapped_path, *s;
4785 			error = got_repo_map_path(&mapped_path, repo, argv[i]);
4786 			if (error)
4787 				goto done;
4788 			s = mapped_path;
4789 			while (s[0] == '/')
4790 				s++;
4791 			in_repo_path = strdup(s);
4792 			if (in_repo_path == NULL) {
4793 				error = got_error_from_errno("asprintf");
4794 				free(mapped_path);
4795 				goto done;
4796 			}
4797 			free(mapped_path);
4798 
4799 		}
4800 		error = got_pathlist_insert(&new, &paths, in_repo_path, NULL);
4801 		if (error || new == NULL /* duplicate */)
4802 			free(in_repo_path);
4803 		if (error)
4804 			goto done;
4805 	}
4806 
4807 	if (worktree) {
4808 		/* Release work tree lock. */
4809 		got_worktree_close(worktree);
4810 		worktree = NULL;
4811 	}
4812 
4813 	switch (type1 == GOT_OBJ_TYPE_ANY ? type2 : type1) {
4814 	case GOT_OBJ_TYPE_BLOB:
4815 		error = got_diff_objects_as_blobs(NULL, NULL, ids[0], ids[1],
4816 		    NULL, NULL, diff_context, ignore_whitespace,
4817 		    force_text_diff, repo, stdout);
4818 		break;
4819 	case GOT_OBJ_TYPE_TREE:
4820 		error = got_diff_objects_as_trees(NULL, NULL, ids[0], ids[1],
4821 		    &paths, "", "", diff_context, ignore_whitespace,
4822 		    force_text_diff, repo, stdout);
4823 		break;
4824 	case GOT_OBJ_TYPE_COMMIT:
4825 		printf("diff %s %s\n", labels[0], labels[1]);
4826 		error = got_diff_objects_as_commits(NULL, NULL, ids[0], ids[1],
4827 		    &paths, diff_context, ignore_whitespace, force_text_diff,
4828 		    repo, stdout);
4829 		break;
4830 	default:
4831 		error = got_error(GOT_ERR_OBJ_TYPE);
4832 	}
4833 done:
4834 	free(labels[0]);
4835 	free(labels[1]);
4836 	free(ids[0]);
4837 	free(ids[1]);
4838 	if (worktree)
4839 		got_worktree_close(worktree);
4840 	if (repo) {
4841 		const struct got_error *close_err = got_repo_close(repo);
4842 		if (error == NULL)
4843 			error = close_err;
4844 	}
4845 	TAILQ_FOREACH(pe, &paths, entry)
4846 		free((char *)pe->path);
4847 	got_pathlist_free(&paths);
4848 	got_ref_list_free(&refs);
4849 	return error;
4850 }
4851 
4852 __dead static void
4853 usage_blame(void)
4854 {
4855 	fprintf(stderr,
4856 	    "usage: %s blame [-c commit] [-r repository-path] path\n",
4857 	    getprogname());
4858 	exit(1);
4859 }
4860 
4861 struct blame_line {
4862 	int annotated;
4863 	char *id_str;
4864 	char *committer;
4865 	char datebuf[11]; /* YYYY-MM-DD + NUL */
4866 };
4867 
4868 struct blame_cb_args {
4869 	struct blame_line *lines;
4870 	int nlines;
4871 	int nlines_prec;
4872 	int lineno_cur;
4873 	off_t *line_offsets;
4874 	FILE *f;
4875 	struct got_repository *repo;
4876 };
4877 
4878 static const struct got_error *
4879 blame_cb(void *arg, int nlines, int lineno, struct got_object_id *id)
4880 {
4881 	const struct got_error *err = NULL;
4882 	struct blame_cb_args *a = arg;
4883 	struct blame_line *bline;
4884 	char *line = NULL;
4885 	size_t linesize = 0;
4886 	struct got_commit_object *commit = NULL;
4887 	off_t offset;
4888 	struct tm tm;
4889 	time_t committer_time;
4890 
4891 	if (nlines != a->nlines ||
4892 	    (lineno != -1 && lineno < 1) || lineno > a->nlines)
4893 		return got_error(GOT_ERR_RANGE);
4894 
4895 	if (sigint_received)
4896 		return got_error(GOT_ERR_ITER_COMPLETED);
4897 
4898 	if (lineno == -1)
4899 		return NULL; /* no change in this commit */
4900 
4901 	/* Annotate this line. */
4902 	bline = &a->lines[lineno - 1];
4903 	if (bline->annotated)
4904 		return NULL;
4905 	err = got_object_id_str(&bline->id_str, id);
4906 	if (err)
4907 		return err;
4908 
4909 	err = got_object_open_as_commit(&commit, a->repo, id);
4910 	if (err)
4911 		goto done;
4912 
4913 	bline->committer = strdup(got_object_commit_get_committer(commit));
4914 	if (bline->committer == NULL) {
4915 		err = got_error_from_errno("strdup");
4916 		goto done;
4917 	}
4918 
4919 	committer_time = got_object_commit_get_committer_time(commit);
4920 	if (gmtime_r(&committer_time, &tm) == NULL)
4921 		return got_error_from_errno("gmtime_r");
4922 	if (strftime(bline->datebuf, sizeof(bline->datebuf), "%G-%m-%d",
4923 	    &tm) == 0) {
4924 		err = got_error(GOT_ERR_NO_SPACE);
4925 		goto done;
4926 	}
4927 	bline->annotated = 1;
4928 
4929 	/* Print lines annotated so far. */
4930 	bline = &a->lines[a->lineno_cur - 1];
4931 	if (!bline->annotated)
4932 		goto done;
4933 
4934 	offset = a->line_offsets[a->lineno_cur - 1];
4935 	if (fseeko(a->f, offset, SEEK_SET) == -1) {
4936 		err = got_error_from_errno("fseeko");
4937 		goto done;
4938 	}
4939 
4940 	while (bline->annotated) {
4941 		char *smallerthan, *at, *nl, *committer;
4942 		size_t len;
4943 
4944 		if (getline(&line, &linesize, a->f) == -1) {
4945 			if (ferror(a->f))
4946 				err = got_error_from_errno("getline");
4947 			break;
4948 		}
4949 
4950 		committer = bline->committer;
4951 		smallerthan = strchr(committer, '<');
4952 		if (smallerthan && smallerthan[1] != '\0')
4953 			committer = smallerthan + 1;
4954 		at = strchr(committer, '@');
4955 		if (at)
4956 			*at = '\0';
4957 		len = strlen(committer);
4958 		if (len >= 9)
4959 			committer[8] = '\0';
4960 
4961 		nl = strchr(line, '\n');
4962 		if (nl)
4963 			*nl = '\0';
4964 		printf("%.*d) %.8s %s %-8s %s\n", a->nlines_prec, a->lineno_cur,
4965 		    bline->id_str, bline->datebuf, committer, line);
4966 
4967 		a->lineno_cur++;
4968 		bline = &a->lines[a->lineno_cur - 1];
4969 	}
4970 done:
4971 	if (commit)
4972 		got_object_commit_close(commit);
4973 	free(line);
4974 	return err;
4975 }
4976 
4977 static const struct got_error *
4978 cmd_blame(int argc, char *argv[])
4979 {
4980 	const struct got_error *error;
4981 	struct got_repository *repo = NULL;
4982 	struct got_worktree *worktree = NULL;
4983 	char *path, *cwd = NULL, *repo_path = NULL, *in_repo_path = NULL;
4984 	char *link_target = NULL;
4985 	struct got_object_id *obj_id = NULL;
4986 	struct got_object_id *commit_id = NULL;
4987 	struct got_blob_object *blob = NULL;
4988 	char *commit_id_str = NULL;
4989 	struct blame_cb_args bca;
4990 	int ch, obj_type, i;
4991 	off_t filesize;
4992 
4993 	memset(&bca, 0, sizeof(bca));
4994 
4995 #ifndef PROFILE
4996 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
4997 	    NULL) == -1)
4998 		err(1, "pledge");
4999 #endif
5000 
5001 	while ((ch = getopt(argc, argv, "c:r:")) != -1) {
5002 		switch (ch) {
5003 		case 'c':
5004 			commit_id_str = optarg;
5005 			break;
5006 		case 'r':
5007 			repo_path = realpath(optarg, NULL);
5008 			if (repo_path == NULL)
5009 				return got_error_from_errno2("realpath",
5010 				    optarg);
5011 			got_path_strip_trailing_slashes(repo_path);
5012 			break;
5013 		default:
5014 			usage_blame();
5015 			/* NOTREACHED */
5016 		}
5017 	}
5018 
5019 	argc -= optind;
5020 	argv += optind;
5021 
5022 	if (argc == 1)
5023 		path = argv[0];
5024 	else
5025 		usage_blame();
5026 
5027 	cwd = getcwd(NULL, 0);
5028 	if (cwd == NULL) {
5029 		error = got_error_from_errno("getcwd");
5030 		goto done;
5031 	}
5032 	if (repo_path == NULL) {
5033 		error = got_worktree_open(&worktree, cwd);
5034 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
5035 			goto done;
5036 		else
5037 			error = NULL;
5038 		if (worktree) {
5039 			repo_path =
5040 			    strdup(got_worktree_get_repo_path(worktree));
5041 			if (repo_path == NULL) {
5042 				error = got_error_from_errno("strdup");
5043 				if (error)
5044 					goto done;
5045 			}
5046 		} else {
5047 			repo_path = strdup(cwd);
5048 			if (repo_path == NULL) {
5049 				error = got_error_from_errno("strdup");
5050 				goto done;
5051 			}
5052 		}
5053 	}
5054 
5055 	error = got_repo_open(&repo, repo_path, NULL);
5056 	if (error != NULL)
5057 		goto done;
5058 
5059 	if (worktree) {
5060 		const char *prefix = got_worktree_get_path_prefix(worktree);
5061 		char *p;
5062 
5063 		error = got_worktree_resolve_path(&p, worktree, path);
5064 		if (error)
5065 			goto done;
5066 		if (asprintf(&in_repo_path, "%s%s%s", prefix,
5067 		    (p[0] != '\0' && !got_path_is_root_dir(prefix)) ? "/" : "",
5068 		    p) == -1) {
5069 			error = got_error_from_errno("asprintf");
5070 			free(p);
5071 			goto done;
5072 		}
5073 		free(p);
5074 		error = apply_unveil(got_repo_get_path(repo), 1, NULL);
5075 	} else {
5076 		error = apply_unveil(got_repo_get_path(repo), 1, NULL);
5077 		if (error)
5078 			goto done;
5079 		error = got_repo_map_path(&in_repo_path, repo, path);
5080 	}
5081 	if (error)
5082 		goto done;
5083 
5084 	if (commit_id_str == NULL) {
5085 		struct got_reference *head_ref;
5086 		error = got_ref_open(&head_ref, repo, worktree ?
5087 		    got_worktree_get_head_ref_name(worktree) : GOT_REF_HEAD, 0);
5088 		if (error != NULL)
5089 			goto done;
5090 		error = got_ref_resolve(&commit_id, repo, head_ref);
5091 		got_ref_close(head_ref);
5092 		if (error != NULL)
5093 			goto done;
5094 	} else {
5095 		struct got_reflist_head refs;
5096 		TAILQ_INIT(&refs);
5097 		error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name,
5098 		    NULL);
5099 		if (error)
5100 			goto done;
5101 		error = got_repo_match_object_id(&commit_id, NULL,
5102 		    commit_id_str, GOT_OBJ_TYPE_COMMIT, &refs, repo);
5103 		got_ref_list_free(&refs);
5104 		if (error)
5105 			goto done;
5106 	}
5107 
5108 	if (worktree) {
5109 		/* Release work tree lock. */
5110 		got_worktree_close(worktree);
5111 		worktree = NULL;
5112 	}
5113 
5114 	error = got_object_resolve_symlinks(&link_target, in_repo_path,
5115 	    commit_id, repo);
5116 	if (error)
5117 		goto done;
5118 
5119 	error = got_object_id_by_path(&obj_id, repo, commit_id,
5120 	    link_target ? link_target : in_repo_path);
5121 	if (error)
5122 		goto done;
5123 
5124 	error = got_object_get_type(&obj_type, repo, obj_id);
5125 	if (error)
5126 		goto done;
5127 
5128 	if (obj_type != GOT_OBJ_TYPE_BLOB) {
5129 		error = got_error_path(link_target ? link_target : in_repo_path,
5130 		    GOT_ERR_OBJ_TYPE);
5131 		goto done;
5132 	}
5133 
5134 	error = got_object_open_as_blob(&blob, repo, obj_id, 8192);
5135 	if (error)
5136 		goto done;
5137 	bca.f = got_opentemp();
5138 	if (bca.f == NULL) {
5139 		error = got_error_from_errno("got_opentemp");
5140 		goto done;
5141 	}
5142 	error = got_object_blob_dump_to_file(&filesize, &bca.nlines,
5143 	    &bca.line_offsets, bca.f, blob);
5144 	if (error || bca.nlines == 0)
5145 		goto done;
5146 
5147 	/* Don't include \n at EOF in the blame line count. */
5148 	if (bca.line_offsets[bca.nlines - 1] == filesize)
5149 		bca.nlines--;
5150 
5151 	bca.lines = calloc(bca.nlines, sizeof(*bca.lines));
5152 	if (bca.lines == NULL) {
5153 		error = got_error_from_errno("calloc");
5154 		goto done;
5155 	}
5156 	bca.lineno_cur = 1;
5157 	bca.nlines_prec = 0;
5158 	i = bca.nlines;
5159 	while (i > 0) {
5160 		i /= 10;
5161 		bca.nlines_prec++;
5162 	}
5163 	bca.repo = repo;
5164 
5165 	error = got_blame(link_target ? link_target : in_repo_path, commit_id,
5166 	    repo, blame_cb, &bca, check_cancelled, NULL);
5167 done:
5168 	free(in_repo_path);
5169 	free(link_target);
5170 	free(repo_path);
5171 	free(cwd);
5172 	free(commit_id);
5173 	free(obj_id);
5174 	if (blob)
5175 		got_object_blob_close(blob);
5176 	if (worktree)
5177 		got_worktree_close(worktree);
5178 	if (repo) {
5179 		const struct got_error *close_err = got_repo_close(repo);
5180 		if (error == NULL)
5181 			error = close_err;
5182 	}
5183 	if (bca.lines) {
5184 		for (i = 0; i < bca.nlines; i++) {
5185 			struct blame_line *bline = &bca.lines[i];
5186 			free(bline->id_str);
5187 			free(bline->committer);
5188 		}
5189 		free(bca.lines);
5190 	}
5191 	free(bca.line_offsets);
5192 	if (bca.f && fclose(bca.f) == EOF && error == NULL)
5193 		error = got_error_from_errno("fclose");
5194 	return error;
5195 }
5196 
5197 __dead static void
5198 usage_tree(void)
5199 {
5200 	fprintf(stderr,
5201 	    "usage: %s tree [-c commit] [-r repository-path] [-iR] [path]\n",
5202 	    getprogname());
5203 	exit(1);
5204 }
5205 
5206 static const struct got_error *
5207 print_entry(struct got_tree_entry *te, const char *id, const char *path,
5208     const char *root_path, struct got_repository *repo)
5209 {
5210 	const struct got_error *err = NULL;
5211 	int is_root_path = (strcmp(path, root_path) == 0);
5212 	const char *modestr = "";
5213 	mode_t mode = got_tree_entry_get_mode(te);
5214 	char *link_target = NULL;
5215 
5216 	path += strlen(root_path);
5217 	while (path[0] == '/')
5218 		path++;
5219 
5220 	if (got_object_tree_entry_is_submodule(te))
5221 		modestr = "$";
5222 	else if (S_ISLNK(mode)) {
5223 		int i;
5224 
5225 		err = got_tree_entry_get_symlink_target(&link_target, te, repo);
5226 		if (err)
5227 			return err;
5228 		for (i = 0; i < strlen(link_target); i++) {
5229 			if (!isprint((unsigned char)link_target[i]))
5230 				link_target[i] = '?';
5231 		}
5232 
5233 		modestr = "@";
5234 	}
5235 	else if (S_ISDIR(mode))
5236 		modestr = "/";
5237 	else if (mode & S_IXUSR)
5238 		modestr = "*";
5239 
5240 	printf("%s%s%s%s%s%s%s\n", id ? id : "", path,
5241 	    is_root_path ? "" : "/", got_tree_entry_get_name(te), modestr,
5242 	    link_target ? " -> ": "", link_target ? link_target : "");
5243 
5244 	free(link_target);
5245 	return NULL;
5246 }
5247 
5248 static const struct got_error *
5249 print_tree(const char *path, struct got_object_id *commit_id,
5250     int show_ids, int recurse, const char *root_path,
5251     struct got_repository *repo)
5252 {
5253 	const struct got_error *err = NULL;
5254 	struct got_object_id *tree_id = NULL;
5255 	struct got_tree_object *tree = NULL;
5256 	int nentries, i;
5257 
5258 	err = got_object_id_by_path(&tree_id, repo, commit_id, path);
5259 	if (err)
5260 		goto done;
5261 
5262 	err = got_object_open_as_tree(&tree, repo, tree_id);
5263 	if (err)
5264 		goto done;
5265 	nentries = got_object_tree_get_nentries(tree);
5266 	for (i = 0; i < nentries; i++) {
5267 		struct got_tree_entry *te;
5268 		char *id = NULL;
5269 
5270 		if (sigint_received || sigpipe_received)
5271 			break;
5272 
5273 		te = got_object_tree_get_entry(tree, i);
5274 		if (show_ids) {
5275 			char *id_str;
5276 			err = got_object_id_str(&id_str,
5277 			    got_tree_entry_get_id(te));
5278 			if (err)
5279 				goto done;
5280 			if (asprintf(&id, "%s ", id_str) == -1) {
5281 				err = got_error_from_errno("asprintf");
5282 				free(id_str);
5283 				goto done;
5284 			}
5285 			free(id_str);
5286 		}
5287 		err = print_entry(te, id, path, root_path, repo);
5288 		free(id);
5289 		if (err)
5290 			goto done;
5291 
5292 		if (recurse && S_ISDIR(got_tree_entry_get_mode(te))) {
5293 			char *child_path;
5294 			if (asprintf(&child_path, "%s%s%s", path,
5295 			    path[0] == '/' && path[1] == '\0' ? "" : "/",
5296 			    got_tree_entry_get_name(te)) == -1) {
5297 				err = got_error_from_errno("asprintf");
5298 				goto done;
5299 			}
5300 			err = print_tree(child_path, commit_id, show_ids, 1,
5301 			    root_path, repo);
5302 			free(child_path);
5303 			if (err)
5304 				goto done;
5305 		}
5306 	}
5307 done:
5308 	if (tree)
5309 		got_object_tree_close(tree);
5310 	free(tree_id);
5311 	return err;
5312 }
5313 
5314 static const struct got_error *
5315 cmd_tree(int argc, char *argv[])
5316 {
5317 	const struct got_error *error;
5318 	struct got_repository *repo = NULL;
5319 	struct got_worktree *worktree = NULL;
5320 	const char *path, *refname = NULL;
5321 	char *cwd = NULL, *repo_path = NULL, *in_repo_path = NULL;
5322 	struct got_object_id *commit_id = NULL;
5323 	char *commit_id_str = NULL;
5324 	int show_ids = 0, recurse = 0;
5325 	int ch;
5326 
5327 #ifndef PROFILE
5328 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
5329 	    NULL) == -1)
5330 		err(1, "pledge");
5331 #endif
5332 
5333 	while ((ch = getopt(argc, argv, "c:r:iR")) != -1) {
5334 		switch (ch) {
5335 		case 'c':
5336 			commit_id_str = optarg;
5337 			break;
5338 		case 'r':
5339 			repo_path = realpath(optarg, NULL);
5340 			if (repo_path == NULL)
5341 				return got_error_from_errno2("realpath",
5342 				    optarg);
5343 			got_path_strip_trailing_slashes(repo_path);
5344 			break;
5345 		case 'i':
5346 			show_ids = 1;
5347 			break;
5348 		case 'R':
5349 			recurse = 1;
5350 			break;
5351 		default:
5352 			usage_tree();
5353 			/* NOTREACHED */
5354 		}
5355 	}
5356 
5357 	argc -= optind;
5358 	argv += optind;
5359 
5360 	if (argc == 1)
5361 		path = argv[0];
5362 	else if (argc > 1)
5363 		usage_tree();
5364 	else
5365 		path = NULL;
5366 
5367 	cwd = getcwd(NULL, 0);
5368 	if (cwd == NULL) {
5369 		error = got_error_from_errno("getcwd");
5370 		goto done;
5371 	}
5372 	if (repo_path == NULL) {
5373 		error = got_worktree_open(&worktree, cwd);
5374 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
5375 			goto done;
5376 		else
5377 			error = NULL;
5378 		if (worktree) {
5379 			repo_path =
5380 			    strdup(got_worktree_get_repo_path(worktree));
5381 			if (repo_path == NULL)
5382 				error = got_error_from_errno("strdup");
5383 			if (error)
5384 				goto done;
5385 		} else {
5386 			repo_path = strdup(cwd);
5387 			if (repo_path == NULL) {
5388 				error = got_error_from_errno("strdup");
5389 				goto done;
5390 			}
5391 		}
5392 	}
5393 
5394 	error = got_repo_open(&repo, repo_path, NULL);
5395 	if (error != NULL)
5396 		goto done;
5397 
5398 	if (worktree) {
5399 		const char *prefix = got_worktree_get_path_prefix(worktree);
5400 		char *p;
5401 
5402 		if (path == NULL)
5403 			path = "";
5404 		error = got_worktree_resolve_path(&p, worktree, path);
5405 		if (error)
5406 			goto done;
5407 		if (asprintf(&in_repo_path, "%s%s%s", prefix,
5408 		    (p[0] != '\0' && !got_path_is_root_dir(prefix)) ?  "/" : "",
5409 		    p) == -1) {
5410 			error = got_error_from_errno("asprintf");
5411 			free(p);
5412 			goto done;
5413 		}
5414 		free(p);
5415 		error = apply_unveil(got_repo_get_path(repo), 1, NULL);
5416 		if (error)
5417 			goto done;
5418 	} else {
5419 		error = apply_unveil(got_repo_get_path(repo), 1, NULL);
5420 		if (error)
5421 			goto done;
5422 		if (path == NULL)
5423 			path = "/";
5424 		error = got_repo_map_path(&in_repo_path, repo, path);
5425 		if (error != NULL)
5426 			goto done;
5427 	}
5428 
5429 	if (commit_id_str == NULL) {
5430 		struct got_reference *head_ref;
5431 		if (worktree)
5432 			refname = got_worktree_get_head_ref_name(worktree);
5433 		else
5434 			refname = GOT_REF_HEAD;
5435 		error = got_ref_open(&head_ref, repo, refname, 0);
5436 		if (error != NULL)
5437 			goto done;
5438 		error = got_ref_resolve(&commit_id, repo, head_ref);
5439 		got_ref_close(head_ref);
5440 		if (error != NULL)
5441 			goto done;
5442 	} else {
5443 		struct got_reflist_head refs;
5444 		TAILQ_INIT(&refs);
5445 		error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name,
5446 		    NULL);
5447 		if (error)
5448 			goto done;
5449 		error = got_repo_match_object_id(&commit_id, NULL,
5450 		    commit_id_str, GOT_OBJ_TYPE_COMMIT, &refs, repo);
5451 		got_ref_list_free(&refs);
5452 		if (error)
5453 			goto done;
5454 	}
5455 
5456 	if (worktree) {
5457 		/* Release work tree lock. */
5458 		got_worktree_close(worktree);
5459 		worktree = NULL;
5460 	}
5461 
5462 	error = print_tree(in_repo_path, commit_id, show_ids, recurse,
5463 	    in_repo_path, repo);
5464 done:
5465 	free(in_repo_path);
5466 	free(repo_path);
5467 	free(cwd);
5468 	free(commit_id);
5469 	if (worktree)
5470 		got_worktree_close(worktree);
5471 	if (repo) {
5472 		const struct got_error *close_err = got_repo_close(repo);
5473 		if (error == NULL)
5474 			error = close_err;
5475 	}
5476 	return error;
5477 }
5478 
5479 __dead static void
5480 usage_status(void)
5481 {
5482 	fprintf(stderr, "usage: %s status [-I] [-s status-codes ] "
5483 	    "[-S status-codes] [path ...]\n", getprogname());
5484 	exit(1);
5485 }
5486 
5487 struct got_status_arg {
5488 	char *status_codes;
5489 	int suppress;
5490 };
5491 
5492 static const struct got_error *
5493 print_status(void *arg, unsigned char status, unsigned char staged_status,
5494     const char *path, struct got_object_id *blob_id,
5495     struct got_object_id *staged_blob_id, struct got_object_id *commit_id,
5496     int dirfd, const char *de_name)
5497 {
5498 	struct got_status_arg *st = arg;
5499 
5500 	if (status == staged_status && (status == GOT_STATUS_DELETE))
5501 		status = GOT_STATUS_NO_CHANGE;
5502 	if (st != NULL && st->status_codes) {
5503 		size_t ncodes = strlen(st->status_codes);
5504 		int i, j = 0;
5505 
5506 		for (i = 0; i < ncodes ; i++) {
5507 			if (st->suppress) {
5508 				if (status == st->status_codes[i] ||
5509 				    staged_status == st->status_codes[i]) {
5510 					j++;
5511 					continue;
5512 				}
5513 			} else {
5514 				if (status == st->status_codes[i] ||
5515 				    staged_status == st->status_codes[i])
5516 					break;
5517 			}
5518 		}
5519 
5520 		if (st->suppress && j == 0)
5521 			goto print;
5522 
5523 		if (i == ncodes)
5524 			return NULL;
5525 	}
5526 print:
5527 	printf("%c%c %s\n", status, staged_status, path);
5528 	return NULL;
5529 }
5530 
5531 static const struct got_error *
5532 cmd_status(int argc, char *argv[])
5533 {
5534 	const struct got_error *error = NULL;
5535 	struct got_repository *repo = NULL;
5536 	struct got_worktree *worktree = NULL;
5537 	struct got_status_arg st;
5538 	char *cwd = NULL;
5539 	struct got_pathlist_head paths;
5540 	struct got_pathlist_entry *pe;
5541 	int ch, i, no_ignores = 0;
5542 
5543 	TAILQ_INIT(&paths);
5544 
5545 	memset(&st, 0, sizeof(st));
5546 	st.status_codes = NULL;
5547 	st.suppress = 0;
5548 
5549 	while ((ch = getopt(argc, argv, "Is:S:")) != -1) {
5550 		switch (ch) {
5551 		case 'I':
5552 			no_ignores = 1;
5553 			break;
5554 		case 'S':
5555 			if (st.status_codes != NULL && st.suppress == 0)
5556 				option_conflict('S', 's');
5557 			st.suppress = 1;
5558 			/* fallthrough */
5559 		case 's':
5560 			for (i = 0; i < strlen(optarg); i++) {
5561 				switch (optarg[i]) {
5562 				case GOT_STATUS_MODIFY:
5563 				case GOT_STATUS_ADD:
5564 				case GOT_STATUS_DELETE:
5565 				case GOT_STATUS_CONFLICT:
5566 				case GOT_STATUS_MISSING:
5567 				case GOT_STATUS_OBSTRUCTED:
5568 				case GOT_STATUS_UNVERSIONED:
5569 				case GOT_STATUS_MODE_CHANGE:
5570 				case GOT_STATUS_NONEXISTENT:
5571 					break;
5572 				default:
5573 					errx(1, "invalid status code '%c'",
5574 					    optarg[i]);
5575 				}
5576 			}
5577 			if (ch == 's' && st.suppress)
5578 				option_conflict('s', 'S');
5579 			st.status_codes = optarg;
5580 			break;
5581 		default:
5582 			usage_status();
5583 			/* NOTREACHED */
5584 		}
5585 	}
5586 
5587 	argc -= optind;
5588 	argv += optind;
5589 
5590 #ifndef PROFILE
5591 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
5592 	    NULL) == -1)
5593 		err(1, "pledge");
5594 #endif
5595 	cwd = getcwd(NULL, 0);
5596 	if (cwd == NULL) {
5597 		error = got_error_from_errno("getcwd");
5598 		goto done;
5599 	}
5600 
5601 	error = got_worktree_open(&worktree, cwd);
5602 	if (error) {
5603 		if (error->code == GOT_ERR_NOT_WORKTREE)
5604 			error = wrap_not_worktree_error(error, "status", cwd);
5605 		goto done;
5606 	}
5607 
5608 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
5609 	    NULL);
5610 	if (error != NULL)
5611 		goto done;
5612 
5613 	error = apply_unveil(got_repo_get_path(repo), 1,
5614 	    got_worktree_get_root_path(worktree));
5615 	if (error)
5616 		goto done;
5617 
5618 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
5619 	if (error)
5620 		goto done;
5621 
5622 	error = got_worktree_status(worktree, &paths, repo, no_ignores,
5623 	    print_status, &st, check_cancelled, NULL);
5624 done:
5625 	TAILQ_FOREACH(pe, &paths, entry)
5626 		free((char *)pe->path);
5627 	got_pathlist_free(&paths);
5628 	free(cwd);
5629 	return error;
5630 }
5631 
5632 __dead static void
5633 usage_ref(void)
5634 {
5635 	fprintf(stderr,
5636 	    "usage: %s ref [-r repository] [-l] [-t] [-c object] "
5637 	        "[-s reference] [-d] [name]\n",
5638 	    getprogname());
5639 	exit(1);
5640 }
5641 
5642 static const struct got_error *
5643 list_refs(struct got_repository *repo, const char *refname, int sort_by_time)
5644 {
5645 	static const struct got_error *err = NULL;
5646 	struct got_reflist_head refs;
5647 	struct got_reflist_entry *re;
5648 
5649 	TAILQ_INIT(&refs);
5650 	err = got_ref_list(&refs, repo, refname, sort_by_time ?
5651 	    got_ref_cmp_by_commit_timestamp_descending : got_ref_cmp_by_name,
5652 	    repo);
5653 	if (err)
5654 		return err;
5655 
5656 	TAILQ_FOREACH(re, &refs, entry) {
5657 		char *refstr;
5658 		refstr = got_ref_to_str(re->ref);
5659 		if (refstr == NULL)
5660 			return got_error_from_errno("got_ref_to_str");
5661 		printf("%s: %s\n", got_ref_get_name(re->ref), refstr);
5662 		free(refstr);
5663 	}
5664 
5665 	got_ref_list_free(&refs);
5666 	return NULL;
5667 }
5668 
5669 static const struct got_error *
5670 delete_ref_by_name(struct got_repository *repo, const char *refname)
5671 {
5672 	const struct got_error *err;
5673 	struct got_reference *ref;
5674 
5675 	err = got_ref_open(&ref, repo, refname, 0);
5676 	if (err)
5677 		return err;
5678 
5679 	err = delete_ref(repo, ref);
5680 	got_ref_close(ref);
5681 	return err;
5682 }
5683 
5684 static const struct got_error *
5685 add_ref(struct got_repository *repo, const char *refname, const char *target)
5686 {
5687 	const struct got_error *err = NULL;
5688 	struct got_object_id *id = NULL;
5689 	struct got_reference *ref = NULL;
5690 	struct got_reflist_head refs;
5691 
5692 	/*
5693 	 * Don't let the user create a reference name with a leading '-'.
5694 	 * While technically a valid reference name, this case is usually
5695 	 * an unintended typo.
5696 	 */
5697 	if (refname[0] == '-')
5698 		return got_error_path(refname, GOT_ERR_REF_NAME_MINUS);
5699 
5700 	TAILQ_INIT(&refs);
5701 	err = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name, NULL);
5702 	if (err)
5703 		goto done;
5704 	err = got_repo_match_object_id(&id, NULL, target, GOT_OBJ_TYPE_ANY,
5705 	    &refs, repo);
5706 	got_ref_list_free(&refs);
5707 	if (err)
5708 		goto done;
5709 
5710 	err = got_ref_alloc(&ref, refname, id);
5711 	if (err)
5712 		goto done;
5713 
5714 	err = got_ref_write(ref, repo);
5715 done:
5716 	if (ref)
5717 		got_ref_close(ref);
5718 	free(id);
5719 	return err;
5720 }
5721 
5722 static const struct got_error *
5723 add_symref(struct got_repository *repo, const char *refname, const char *target)
5724 {
5725 	const struct got_error *err = NULL;
5726 	struct got_reference *ref = NULL;
5727 	struct got_reference *target_ref = NULL;
5728 
5729 	/*
5730 	 * Don't let the user create a reference name with a leading '-'.
5731 	 * While technically a valid reference name, this case is usually
5732 	 * an unintended typo.
5733 	 */
5734 	if (refname[0] == '-')
5735 		return got_error_path(refname, GOT_ERR_REF_NAME_MINUS);
5736 
5737 	err = got_ref_open(&target_ref, repo, target, 0);
5738 	if (err)
5739 		return err;
5740 
5741 	err = got_ref_alloc_symref(&ref, refname, target_ref);
5742 	if (err)
5743 		goto done;
5744 
5745 	err = got_ref_write(ref, repo);
5746 done:
5747 	if (target_ref)
5748 		got_ref_close(target_ref);
5749 	if (ref)
5750 		got_ref_close(ref);
5751 	return err;
5752 }
5753 
5754 static const struct got_error *
5755 cmd_ref(int argc, char *argv[])
5756 {
5757 	const struct got_error *error = NULL;
5758 	struct got_repository *repo = NULL;
5759 	struct got_worktree *worktree = NULL;
5760 	char *cwd = NULL, *repo_path = NULL;
5761 	int ch, do_list = 0, do_delete = 0, sort_by_time = 0;
5762 	const char *obj_arg = NULL, *symref_target= NULL;
5763 	char *refname = NULL;
5764 
5765 	while ((ch = getopt(argc, argv, "c:dr:ls:t")) != -1) {
5766 		switch (ch) {
5767 		case 'c':
5768 			obj_arg = optarg;
5769 			break;
5770 		case 'd':
5771 			do_delete = 1;
5772 			break;
5773 		case 'r':
5774 			repo_path = realpath(optarg, NULL);
5775 			if (repo_path == NULL)
5776 				return got_error_from_errno2("realpath",
5777 				    optarg);
5778 			got_path_strip_trailing_slashes(repo_path);
5779 			break;
5780 		case 'l':
5781 			do_list = 1;
5782 			break;
5783 		case 's':
5784 			symref_target = optarg;
5785 			break;
5786 		case 't':
5787 			sort_by_time = 1;
5788 			break;
5789 		default:
5790 			usage_ref();
5791 			/* NOTREACHED */
5792 		}
5793 	}
5794 
5795 	if (obj_arg && do_list)
5796 		option_conflict('c', 'l');
5797 	if (obj_arg && do_delete)
5798 		option_conflict('c', 'd');
5799 	if (obj_arg && symref_target)
5800 		option_conflict('c', 's');
5801 	if (symref_target && do_delete)
5802 		option_conflict('s', 'd');
5803 	if (symref_target && do_list)
5804 		option_conflict('s', 'l');
5805 	if (do_delete && do_list)
5806 		option_conflict('d', 'l');
5807 	if (sort_by_time && !do_list)
5808 		errx(1, "-t option requires -l option");
5809 
5810 	argc -= optind;
5811 	argv += optind;
5812 
5813 	if (do_list) {
5814 		if (argc != 0 && argc != 1)
5815 			usage_ref();
5816 		if (argc == 1) {
5817 			refname = strdup(argv[0]);
5818 			if (refname == NULL) {
5819 				error = got_error_from_errno("strdup");
5820 				goto done;
5821 			}
5822 		}
5823 	} else {
5824 		if (argc != 1)
5825 			usage_ref();
5826 		refname = strdup(argv[0]);
5827 		if (refname == NULL) {
5828 			error = got_error_from_errno("strdup");
5829 			goto done;
5830 		}
5831 	}
5832 
5833 	if (refname)
5834 		got_path_strip_trailing_slashes(refname);
5835 
5836 #ifndef PROFILE
5837 	if (do_list) {
5838 		if (pledge("stdio rpath wpath flock proc exec sendfd unveil",
5839 		    NULL) == -1)
5840 			err(1, "pledge");
5841 	} else {
5842 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
5843 		    "sendfd unveil", NULL) == -1)
5844 			err(1, "pledge");
5845 	}
5846 #endif
5847 	cwd = getcwd(NULL, 0);
5848 	if (cwd == NULL) {
5849 		error = got_error_from_errno("getcwd");
5850 		goto done;
5851 	}
5852 
5853 	if (repo_path == NULL) {
5854 		error = got_worktree_open(&worktree, cwd);
5855 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
5856 			goto done;
5857 		else
5858 			error = NULL;
5859 		if (worktree) {
5860 			repo_path =
5861 			    strdup(got_worktree_get_repo_path(worktree));
5862 			if (repo_path == NULL)
5863 				error = got_error_from_errno("strdup");
5864 			if (error)
5865 				goto done;
5866 		} else {
5867 			repo_path = strdup(cwd);
5868 			if (repo_path == NULL) {
5869 				error = got_error_from_errno("strdup");
5870 				goto done;
5871 			}
5872 		}
5873 	}
5874 
5875 	error = got_repo_open(&repo, repo_path, NULL);
5876 	if (error != NULL)
5877 		goto done;
5878 
5879 	error = apply_unveil(got_repo_get_path(repo), do_list,
5880 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
5881 	if (error)
5882 		goto done;
5883 
5884 	if (do_list)
5885 		error = list_refs(repo, refname, sort_by_time);
5886 	else if (do_delete)
5887 		error = delete_ref_by_name(repo, refname);
5888 	else if (symref_target)
5889 		error = add_symref(repo, refname, symref_target);
5890 	else {
5891 		if (obj_arg == NULL)
5892 			usage_ref();
5893 		error = add_ref(repo, refname, obj_arg);
5894 	}
5895 done:
5896 	free(refname);
5897 	if (repo) {
5898 		const struct got_error *close_err = got_repo_close(repo);
5899 		if (error == NULL)
5900 			error = close_err;
5901 	}
5902 	if (worktree)
5903 		got_worktree_close(worktree);
5904 	free(cwd);
5905 	free(repo_path);
5906 	return error;
5907 }
5908 
5909 __dead static void
5910 usage_branch(void)
5911 {
5912 	fprintf(stderr,
5913 	    "usage: %s branch [-c commit] [-d] [-r repository] [-l] [-t] "
5914 	        "[-n] [name]\n", getprogname());
5915 	exit(1);
5916 }
5917 
5918 static const struct got_error *
5919 list_branch(struct got_repository *repo, struct got_worktree *worktree,
5920     struct got_reference *ref)
5921 {
5922 	const struct got_error *err = NULL;
5923 	const char *refname, *marker = "  ";
5924 	char *refstr;
5925 
5926 	refname = got_ref_get_name(ref);
5927 	if (worktree && strcmp(refname,
5928 	    got_worktree_get_head_ref_name(worktree)) == 0) {
5929 		struct got_object_id *id = NULL;
5930 
5931 		err = got_ref_resolve(&id, repo, ref);
5932 		if (err)
5933 			return err;
5934 		if (got_object_id_cmp(id,
5935 		    got_worktree_get_base_commit_id(worktree)) == 0)
5936 			marker = "* ";
5937 		else
5938 			marker = "~ ";
5939 		free(id);
5940 	}
5941 
5942 	if (strncmp(refname, "refs/heads/", 11) == 0)
5943 		refname += 11;
5944 	if (strncmp(refname, "refs/got/worktree/", 18) == 0)
5945 		refname += 18;
5946 	if (strncmp(refname, "refs/remotes/", 13) == 0)
5947 		refname += 13;
5948 
5949 	refstr = got_ref_to_str(ref);
5950 	if (refstr == NULL)
5951 		return got_error_from_errno("got_ref_to_str");
5952 
5953 	printf("%s%s: %s\n", marker, refname, refstr);
5954 	free(refstr);
5955 	return NULL;
5956 }
5957 
5958 static const struct got_error *
5959 show_current_branch(struct got_repository *repo, struct got_worktree *worktree)
5960 {
5961 	const char *refname;
5962 
5963 	if (worktree == NULL)
5964 		return got_error(GOT_ERR_NOT_WORKTREE);
5965 
5966 	refname = got_worktree_get_head_ref_name(worktree);
5967 
5968 	if (strncmp(refname, "refs/heads/", 11) == 0)
5969 		refname += 11;
5970 	if (strncmp(refname, "refs/got/worktree/", 18) == 0)
5971 		refname += 18;
5972 
5973 	printf("%s\n", refname);
5974 
5975 	return NULL;
5976 }
5977 
5978 static const struct got_error *
5979 list_branches(struct got_repository *repo, struct got_worktree *worktree,
5980     int sort_by_time)
5981 {
5982 	static const struct got_error *err = NULL;
5983 	struct got_reflist_head refs;
5984 	struct got_reflist_entry *re;
5985 	struct got_reference *temp_ref = NULL;
5986 	int rebase_in_progress, histedit_in_progress;
5987 
5988 	TAILQ_INIT(&refs);
5989 
5990 	if (worktree) {
5991 		err = got_worktree_rebase_in_progress(&rebase_in_progress,
5992 		    worktree);
5993 		if (err)
5994 			return err;
5995 
5996 		err = got_worktree_histedit_in_progress(&histedit_in_progress,
5997 		    worktree);
5998 		if (err)
5999 			return err;
6000 
6001 		if (rebase_in_progress || histedit_in_progress) {
6002 			err = got_ref_open(&temp_ref, repo,
6003 			    got_worktree_get_head_ref_name(worktree), 0);
6004 			if (err)
6005 				return err;
6006 			list_branch(repo, worktree, temp_ref);
6007 			got_ref_close(temp_ref);
6008 		}
6009 	}
6010 
6011 	err = got_ref_list(&refs, repo, "refs/heads", sort_by_time ?
6012 	    got_ref_cmp_by_commit_timestamp_descending : got_ref_cmp_by_name,
6013 	    repo);
6014 	if (err)
6015 		return err;
6016 
6017 	TAILQ_FOREACH(re, &refs, entry)
6018 		list_branch(repo, worktree, re->ref);
6019 
6020 	got_ref_list_free(&refs);
6021 
6022 	err = got_ref_list(&refs, repo, "refs/remotes", sort_by_time ?
6023 	    got_ref_cmp_by_commit_timestamp_descending : got_ref_cmp_by_name,
6024 	    repo);
6025 	if (err)
6026 		return err;
6027 
6028 	TAILQ_FOREACH(re, &refs, entry)
6029 		list_branch(repo, worktree, re->ref);
6030 
6031 	got_ref_list_free(&refs);
6032 
6033 	return NULL;
6034 }
6035 
6036 static const struct got_error *
6037 delete_branch(struct got_repository *repo, struct got_worktree *worktree,
6038     const char *branch_name)
6039 {
6040 	const struct got_error *err = NULL;
6041 	struct got_reference *ref = NULL;
6042 	char *refname, *remote_refname = NULL;
6043 
6044 	if (strncmp(branch_name, "refs/", 5) == 0)
6045 		branch_name += 5;
6046 	if (strncmp(branch_name, "heads/", 6) == 0)
6047 		branch_name += 6;
6048 	else if (strncmp(branch_name, "remotes/", 8) == 0)
6049 		branch_name += 8;
6050 
6051 	if (asprintf(&refname, "refs/heads/%s", branch_name) == -1)
6052 		return got_error_from_errno("asprintf");
6053 
6054 	if (asprintf(&remote_refname, "refs/remotes/%s",
6055 	    branch_name) == -1) {
6056 		err = got_error_from_errno("asprintf");
6057 		goto done;
6058 	}
6059 
6060 	err = got_ref_open(&ref, repo, refname, 0);
6061 	if (err) {
6062 		const struct got_error *err2;
6063 		if (err->code != GOT_ERR_NOT_REF)
6064 			goto done;
6065 		/*
6066 		 * Keep 'err' intact such that if neither branch exists
6067 		 * we report "refs/heads" rather than "refs/remotes" in
6068 		 * our error message.
6069 		 */
6070 		err2 = got_ref_open(&ref, repo, remote_refname, 0);
6071 		if (err2)
6072 			goto done;
6073 		err = NULL;
6074 	}
6075 
6076 	if (worktree &&
6077 	    strcmp(got_worktree_get_head_ref_name(worktree),
6078 	    got_ref_get_name(ref)) == 0) {
6079 		err = got_error_msg(GOT_ERR_SAME_BRANCH,
6080 		    "will not delete this work tree's current branch");
6081 		goto done;
6082 	}
6083 
6084 	err = delete_ref(repo, ref);
6085 done:
6086 	if (ref)
6087 		got_ref_close(ref);
6088 	free(refname);
6089 	free(remote_refname);
6090 	return err;
6091 }
6092 
6093 static const struct got_error *
6094 add_branch(struct got_repository *repo, const char *branch_name,
6095     struct got_object_id *base_commit_id)
6096 {
6097 	const struct got_error *err = NULL;
6098 	struct got_reference *ref = NULL;
6099 	char *base_refname = NULL, *refname = NULL;
6100 
6101 	/*
6102 	 * Don't let the user create a branch name with a leading '-'.
6103 	 * While technically a valid reference name, this case is usually
6104 	 * an unintended typo.
6105 	 */
6106 	if (branch_name[0] == '-')
6107 		return got_error_path(branch_name, GOT_ERR_REF_NAME_MINUS);
6108 
6109 	if (strncmp(branch_name, "refs/heads/", 11) == 0)
6110 		branch_name += 11;
6111 
6112 	if (asprintf(&refname, "refs/heads/%s", branch_name) == -1) {
6113 		err = got_error_from_errno("asprintf");
6114 		goto done;
6115 	}
6116 
6117 	err = got_ref_open(&ref, repo, refname, 0);
6118 	if (err == NULL) {
6119 		err = got_error(GOT_ERR_BRANCH_EXISTS);
6120 		goto done;
6121 	} else if (err->code != GOT_ERR_NOT_REF)
6122 		goto done;
6123 
6124 	err = got_ref_alloc(&ref, refname, base_commit_id);
6125 	if (err)
6126 		goto done;
6127 
6128 	err = got_ref_write(ref, repo);
6129 done:
6130 	if (ref)
6131 		got_ref_close(ref);
6132 	free(base_refname);
6133 	free(refname);
6134 	return err;
6135 }
6136 
6137 static const struct got_error *
6138 cmd_branch(int argc, char *argv[])
6139 {
6140 	const struct got_error *error = NULL;
6141 	struct got_repository *repo = NULL;
6142 	struct got_worktree *worktree = NULL;
6143 	char *cwd = NULL, *repo_path = NULL;
6144 	int ch, do_list = 0, do_show = 0, do_update = 1, sort_by_time = 0;
6145 	const char *delref = NULL, *commit_id_arg = NULL;
6146 	struct got_reference *ref = NULL;
6147 	struct got_pathlist_head paths;
6148 	struct got_pathlist_entry *pe;
6149 	struct got_object_id *commit_id = NULL;
6150 	char *commit_id_str = NULL;
6151 
6152 	TAILQ_INIT(&paths);
6153 
6154 	while ((ch = getopt(argc, argv, "c:d:r:lnt")) != -1) {
6155 		switch (ch) {
6156 		case 'c':
6157 			commit_id_arg = optarg;
6158 			break;
6159 		case 'd':
6160 			delref = optarg;
6161 			break;
6162 		case 'r':
6163 			repo_path = realpath(optarg, NULL);
6164 			if (repo_path == NULL)
6165 				return got_error_from_errno2("realpath",
6166 				    optarg);
6167 			got_path_strip_trailing_slashes(repo_path);
6168 			break;
6169 		case 'l':
6170 			do_list = 1;
6171 			break;
6172 		case 'n':
6173 			do_update = 0;
6174 			break;
6175 		case 't':
6176 			sort_by_time = 1;
6177 			break;
6178 		default:
6179 			usage_branch();
6180 			/* NOTREACHED */
6181 		}
6182 	}
6183 
6184 	if (do_list && delref)
6185 		option_conflict('l', 'd');
6186 	if (sort_by_time && !do_list)
6187 		errx(1, "-t option requires -l option");
6188 
6189 	argc -= optind;
6190 	argv += optind;
6191 
6192 	if (!do_list && !delref && argc == 0)
6193 		do_show = 1;
6194 
6195 	if ((do_list || delref || do_show) && commit_id_arg != NULL)
6196 		errx(1, "-c option can only be used when creating a branch");
6197 
6198 	if (do_list || delref) {
6199 		if (argc > 0)
6200 			usage_branch();
6201 	} else if (!do_show && argc != 1)
6202 		usage_branch();
6203 
6204 #ifndef PROFILE
6205 	if (do_list || do_show) {
6206 		if (pledge("stdio rpath wpath flock proc exec sendfd unveil",
6207 		    NULL) == -1)
6208 			err(1, "pledge");
6209 	} else {
6210 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
6211 		    "sendfd unveil", NULL) == -1)
6212 			err(1, "pledge");
6213 	}
6214 #endif
6215 	cwd = getcwd(NULL, 0);
6216 	if (cwd == NULL) {
6217 		error = got_error_from_errno("getcwd");
6218 		goto done;
6219 	}
6220 
6221 	if (repo_path == NULL) {
6222 		error = got_worktree_open(&worktree, cwd);
6223 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
6224 			goto done;
6225 		else
6226 			error = NULL;
6227 		if (worktree) {
6228 			repo_path =
6229 			    strdup(got_worktree_get_repo_path(worktree));
6230 			if (repo_path == NULL)
6231 				error = got_error_from_errno("strdup");
6232 			if (error)
6233 				goto done;
6234 		} else {
6235 			repo_path = strdup(cwd);
6236 			if (repo_path == NULL) {
6237 				error = got_error_from_errno("strdup");
6238 				goto done;
6239 			}
6240 		}
6241 	}
6242 
6243 	error = got_repo_open(&repo, repo_path, NULL);
6244 	if (error != NULL)
6245 		goto done;
6246 
6247 	error = apply_unveil(got_repo_get_path(repo), do_list,
6248 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
6249 	if (error)
6250 		goto done;
6251 
6252 	if (do_show)
6253 		error = show_current_branch(repo, worktree);
6254 	else if (do_list)
6255 		error = list_branches(repo, worktree, sort_by_time);
6256 	else if (delref)
6257 		error = delete_branch(repo, worktree, delref);
6258 	else {
6259 		struct got_reflist_head refs;
6260 		TAILQ_INIT(&refs);
6261 		error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name,
6262 		    NULL);
6263 		if (error)
6264 			goto done;
6265 		if (commit_id_arg == NULL)
6266 			commit_id_arg = worktree ?
6267 			    got_worktree_get_head_ref_name(worktree) :
6268 			    GOT_REF_HEAD;
6269 		error = got_repo_match_object_id(&commit_id, NULL,
6270 		    commit_id_arg, GOT_OBJ_TYPE_COMMIT, &refs, repo);
6271 		got_ref_list_free(&refs);
6272 		if (error)
6273 			goto done;
6274 		error = add_branch(repo, argv[0], commit_id);
6275 		if (error)
6276 			goto done;
6277 		if (worktree && do_update) {
6278 			struct got_update_progress_arg upa;
6279 			char *branch_refname = NULL;
6280 
6281 			error = got_object_id_str(&commit_id_str, commit_id);
6282 			if (error)
6283 				goto done;
6284 			error = get_worktree_paths_from_argv(&paths, 0, NULL,
6285 			    worktree);
6286 			if (error)
6287 				goto done;
6288 			if (asprintf(&branch_refname, "refs/heads/%s", argv[0])
6289 			    == -1) {
6290 				error = got_error_from_errno("asprintf");
6291 				goto done;
6292 			}
6293 			error = got_ref_open(&ref, repo, branch_refname, 0);
6294 			free(branch_refname);
6295 			if (error)
6296 				goto done;
6297 			error = switch_head_ref(ref, commit_id, worktree,
6298 			    repo);
6299 			if (error)
6300 				goto done;
6301 			error = got_worktree_set_base_commit_id(worktree, repo,
6302 			    commit_id);
6303 			if (error)
6304 				goto done;
6305 			memset(&upa, 0, sizeof(upa));
6306 			error = got_worktree_checkout_files(worktree, &paths,
6307 			    repo, update_progress, &upa, check_cancelled,
6308 			    NULL);
6309 			if (error)
6310 				goto done;
6311 			if (upa.did_something) {
6312 				printf("Updated to %s: %s\n",
6313 				    got_worktree_get_head_ref_name(worktree),
6314 				    commit_id_str);
6315 			}
6316 			print_update_progress_stats(&upa);
6317 		}
6318 	}
6319 done:
6320 	if (ref)
6321 		got_ref_close(ref);
6322 	if (repo) {
6323 		const struct got_error *close_err = got_repo_close(repo);
6324 		if (error == NULL)
6325 			error = close_err;
6326 	}
6327 	if (worktree)
6328 		got_worktree_close(worktree);
6329 	free(cwd);
6330 	free(repo_path);
6331 	free(commit_id);
6332 	free(commit_id_str);
6333 	TAILQ_FOREACH(pe, &paths, entry)
6334 		free((char *)pe->path);
6335 	got_pathlist_free(&paths);
6336 	return error;
6337 }
6338 
6339 
6340 __dead static void
6341 usage_tag(void)
6342 {
6343 	fprintf(stderr,
6344 	    "usage: %s tag [-c commit] [-r repository] [-l] "
6345 	        "[-m message] name\n", getprogname());
6346 	exit(1);
6347 }
6348 
6349 #if 0
6350 static const struct got_error *
6351 sort_tags(struct got_reflist_head *sorted, struct got_reflist_head *tags)
6352 {
6353 	const struct got_error *err = NULL;
6354 	struct got_reflist_entry *re, *se, *new;
6355 	struct got_object_id *re_id, *se_id;
6356 	struct got_tag_object *re_tag, *se_tag;
6357 	time_t re_time, se_time;
6358 
6359 	STAILQ_FOREACH(re, tags, entry) {
6360 		se = STAILQ_FIRST(sorted);
6361 		if (se == NULL) {
6362 			err = got_reflist_entry_dup(&new, re);
6363 			if (err)
6364 				return err;
6365 			STAILQ_INSERT_HEAD(sorted, new, entry);
6366 			continue;
6367 		} else {
6368 			err = got_ref_resolve(&re_id, repo, re->ref);
6369 			if (err)
6370 				break;
6371 			err = got_object_open_as_tag(&re_tag, repo, re_id);
6372 			free(re_id);
6373 			if (err)
6374 				break;
6375 			re_time = got_object_tag_get_tagger_time(re_tag);
6376 			got_object_tag_close(re_tag);
6377 		}
6378 
6379 		while (se) {
6380 			err = got_ref_resolve(&se_id, repo, re->ref);
6381 			if (err)
6382 				break;
6383 			err = got_object_open_as_tag(&se_tag, repo, se_id);
6384 			free(se_id);
6385 			if (err)
6386 				break;
6387 			se_time = got_object_tag_get_tagger_time(se_tag);
6388 			got_object_tag_close(se_tag);
6389 
6390 			if (se_time > re_time) {
6391 				err = got_reflist_entry_dup(&new, re);
6392 				if (err)
6393 					return err;
6394 				STAILQ_INSERT_AFTER(sorted, se, new, entry);
6395 				break;
6396 			}
6397 			se = STAILQ_NEXT(se, entry);
6398 			continue;
6399 		}
6400 	}
6401 done:
6402 	return err;
6403 }
6404 #endif
6405 
6406 static const struct got_error *
6407 list_tags(struct got_repository *repo, struct got_worktree *worktree)
6408 {
6409 	static const struct got_error *err = NULL;
6410 	struct got_reflist_head refs;
6411 	struct got_reflist_entry *re;
6412 
6413 	TAILQ_INIT(&refs);
6414 
6415 	err = got_ref_list(&refs, repo, "refs/tags", got_ref_cmp_tags, repo);
6416 	if (err)
6417 		return err;
6418 
6419 	TAILQ_FOREACH(re, &refs, entry) {
6420 		const char *refname;
6421 		char *refstr, *tagmsg0, *tagmsg, *line, *id_str, *datestr;
6422 		char datebuf[26];
6423 		const char *tagger;
6424 		time_t tagger_time;
6425 		struct got_object_id *id;
6426 		struct got_tag_object *tag;
6427 		struct got_commit_object *commit = NULL;
6428 
6429 		refname = got_ref_get_name(re->ref);
6430 		if (strncmp(refname, "refs/tags/", 10) != 0)
6431 			continue;
6432 		refname += 10;
6433 		refstr = got_ref_to_str(re->ref);
6434 		if (refstr == NULL) {
6435 			err = got_error_from_errno("got_ref_to_str");
6436 			break;
6437 		}
6438 		printf("%stag %s %s\n", GOT_COMMIT_SEP_STR, refname, refstr);
6439 		free(refstr);
6440 
6441 		err = got_ref_resolve(&id, repo, re->ref);
6442 		if (err)
6443 			break;
6444 		err = got_object_open_as_tag(&tag, repo, id);
6445 		if (err) {
6446 			if (err->code != GOT_ERR_OBJ_TYPE) {
6447 				free(id);
6448 				break;
6449 			}
6450 			/* "lightweight" tag */
6451 			err = got_object_open_as_commit(&commit, repo, id);
6452 			if (err) {
6453 				free(id);
6454 				break;
6455 			}
6456 			tagger = got_object_commit_get_committer(commit);
6457 			tagger_time =
6458 			    got_object_commit_get_committer_time(commit);
6459 			err = got_object_id_str(&id_str, id);
6460 			free(id);
6461 			if (err)
6462 				break;
6463 		} else {
6464 			free(id);
6465 			tagger = got_object_tag_get_tagger(tag);
6466 			tagger_time = got_object_tag_get_tagger_time(tag);
6467 			err = got_object_id_str(&id_str,
6468 			    got_object_tag_get_object_id(tag));
6469 			if (err)
6470 				break;
6471 		}
6472 		printf("from: %s\n", tagger);
6473 		datestr = get_datestr(&tagger_time, datebuf);
6474 		if (datestr)
6475 			printf("date: %s UTC\n", datestr);
6476 		if (commit)
6477 			printf("object: %s %s\n", GOT_OBJ_LABEL_COMMIT, id_str);
6478 		else {
6479 			switch (got_object_tag_get_object_type(tag)) {
6480 			case GOT_OBJ_TYPE_BLOB:
6481 				printf("object: %s %s\n", GOT_OBJ_LABEL_BLOB,
6482 				    id_str);
6483 				break;
6484 			case GOT_OBJ_TYPE_TREE:
6485 				printf("object: %s %s\n", GOT_OBJ_LABEL_TREE,
6486 				    id_str);
6487 				break;
6488 			case GOT_OBJ_TYPE_COMMIT:
6489 				printf("object: %s %s\n", GOT_OBJ_LABEL_COMMIT,
6490 				    id_str);
6491 				break;
6492 			case GOT_OBJ_TYPE_TAG:
6493 				printf("object: %s %s\n", GOT_OBJ_LABEL_TAG,
6494 				    id_str);
6495 				break;
6496 			default:
6497 				break;
6498 			}
6499 		}
6500 		free(id_str);
6501 		if (commit) {
6502 			err = got_object_commit_get_logmsg(&tagmsg0, commit);
6503 			if (err)
6504 				break;
6505 			got_object_commit_close(commit);
6506 		} else {
6507 			tagmsg0 = strdup(got_object_tag_get_message(tag));
6508 			got_object_tag_close(tag);
6509 			if (tagmsg0 == NULL) {
6510 				err = got_error_from_errno("strdup");
6511 				break;
6512 			}
6513 		}
6514 
6515 		tagmsg = tagmsg0;
6516 		do {
6517 			line = strsep(&tagmsg, "\n");
6518 			if (line)
6519 				printf(" %s\n", line);
6520 		} while (line);
6521 		free(tagmsg0);
6522 	}
6523 
6524 	got_ref_list_free(&refs);
6525 	return NULL;
6526 }
6527 
6528 static const struct got_error *
6529 get_tag_message(char **tagmsg, char **tagmsg_path, const char *commit_id_str,
6530     const char *tag_name, const char *repo_path)
6531 {
6532 	const struct got_error *err = NULL;
6533 	char *template = NULL, *initial_content = NULL;
6534 	char *editor = NULL;
6535 	int initial_content_len;
6536 	int fd = -1;
6537 
6538 	if (asprintf(&template, GOT_TMPDIR_STR "/got-tagmsg") == -1) {
6539 		err = got_error_from_errno("asprintf");
6540 		goto done;
6541 	}
6542 
6543 	initial_content_len = asprintf(&initial_content,
6544 	    "\n# tagging commit %s as %s\n",
6545 	    commit_id_str, tag_name);
6546 	if (initial_content_len == -1) {
6547 		err = got_error_from_errno("asprintf");
6548 		goto done;
6549 	}
6550 
6551 	err = got_opentemp_named_fd(tagmsg_path, &fd, template);
6552 	if (err)
6553 		goto done;
6554 
6555 	if (write(fd, initial_content, initial_content_len) == -1) {
6556 		err = got_error_from_errno2("write", *tagmsg_path);
6557 		goto done;
6558 	}
6559 
6560 	err = get_editor(&editor);
6561 	if (err)
6562 		goto done;
6563 	err = edit_logmsg(tagmsg, editor, *tagmsg_path, initial_content,
6564 	    initial_content_len, 1);
6565 done:
6566 	free(initial_content);
6567 	free(template);
6568 	free(editor);
6569 
6570 	if (fd != -1 && close(fd) == -1 && err == NULL)
6571 		err = got_error_from_errno2("close", *tagmsg_path);
6572 
6573 	/* Editor is done; we can now apply unveil(2) */
6574 	if (err == NULL)
6575 		err = apply_unveil(repo_path, 0, NULL);
6576 	if (err) {
6577 		free(*tagmsg);
6578 		*tagmsg = NULL;
6579 	}
6580 	return err;
6581 }
6582 
6583 static const struct got_error *
6584 add_tag(struct got_repository *repo, struct got_worktree *worktree,
6585     const char *tag_name, const char *commit_arg, const char *tagmsg_arg)
6586 {
6587 	const struct got_error *err = NULL;
6588 	struct got_object_id *commit_id = NULL, *tag_id = NULL;
6589 	char *label = NULL, *commit_id_str = NULL;
6590 	struct got_reference *ref = NULL;
6591 	char *refname = NULL, *tagmsg = NULL, *tagger = NULL;
6592 	char *tagmsg_path = NULL, *tag_id_str = NULL;
6593 	int preserve_tagmsg = 0;
6594 	struct got_reflist_head refs;
6595 
6596 	TAILQ_INIT(&refs);
6597 
6598 	/*
6599 	 * Don't let the user create a tag name with a leading '-'.
6600 	 * While technically a valid reference name, this case is usually
6601 	 * an unintended typo.
6602 	 */
6603 	if (tag_name[0] == '-')
6604 		return got_error_path(tag_name, GOT_ERR_REF_NAME_MINUS);
6605 
6606 	err = get_author(&tagger, repo, worktree);
6607 	if (err)
6608 		return err;
6609 
6610 	err = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name, NULL);
6611 	if (err)
6612 		goto done;
6613 
6614 	err = got_repo_match_object_id(&commit_id, &label, commit_arg,
6615 	    GOT_OBJ_TYPE_COMMIT, &refs, repo);
6616 	if (err)
6617 		goto done;
6618 
6619 	err = got_object_id_str(&commit_id_str, commit_id);
6620 	if (err)
6621 		goto done;
6622 
6623 	if (strncmp("refs/tags/", tag_name, 10) == 0) {
6624 		refname = strdup(tag_name);
6625 		if (refname == NULL) {
6626 			err = got_error_from_errno("strdup");
6627 			goto done;
6628 		}
6629 		tag_name += 10;
6630 	} else if (asprintf(&refname, "refs/tags/%s", tag_name) == -1) {
6631 		err = got_error_from_errno("asprintf");
6632 		goto done;
6633 	}
6634 
6635 	err = got_ref_open(&ref, repo, refname, 0);
6636 	if (err == NULL) {
6637 		err = got_error(GOT_ERR_TAG_EXISTS);
6638 		goto done;
6639 	} else if (err->code != GOT_ERR_NOT_REF)
6640 		goto done;
6641 
6642 	if (tagmsg_arg == NULL) {
6643 		err = get_tag_message(&tagmsg, &tagmsg_path, commit_id_str,
6644 		    tag_name, got_repo_get_path(repo));
6645 		if (err) {
6646 			if (err->code != GOT_ERR_COMMIT_MSG_EMPTY &&
6647 			    tagmsg_path != NULL)
6648 				preserve_tagmsg = 1;
6649 			goto done;
6650 		}
6651 	}
6652 
6653 	err = got_object_tag_create(&tag_id, tag_name, commit_id,
6654 	    tagger, time(NULL), tagmsg ? tagmsg : tagmsg_arg, repo);
6655 	if (err) {
6656 		if (tagmsg_path)
6657 			preserve_tagmsg = 1;
6658 		goto done;
6659 	}
6660 
6661 	err = got_ref_alloc(&ref, refname, tag_id);
6662 	if (err) {
6663 		if (tagmsg_path)
6664 			preserve_tagmsg = 1;
6665 		goto done;
6666 	}
6667 
6668 	err = got_ref_write(ref, repo);
6669 	if (err) {
6670 		if (tagmsg_path)
6671 			preserve_tagmsg = 1;
6672 		goto done;
6673 	}
6674 
6675 	err = got_object_id_str(&tag_id_str, tag_id);
6676 	if (err) {
6677 		if (tagmsg_path)
6678 			preserve_tagmsg = 1;
6679 		goto done;
6680 	}
6681 	printf("Created tag %s\n", tag_id_str);
6682 done:
6683 	if (preserve_tagmsg) {
6684 		fprintf(stderr, "%s: tag message preserved in %s\n",
6685 		    getprogname(), tagmsg_path);
6686 	} else if (tagmsg_path && unlink(tagmsg_path) == -1 && err == NULL)
6687 		err = got_error_from_errno2("unlink", tagmsg_path);
6688 	free(tag_id_str);
6689 	if (ref)
6690 		got_ref_close(ref);
6691 	free(commit_id);
6692 	free(commit_id_str);
6693 	free(refname);
6694 	free(tagmsg);
6695 	free(tagmsg_path);
6696 	free(tagger);
6697 	got_ref_list_free(&refs);
6698 	return err;
6699 }
6700 
6701 static const struct got_error *
6702 cmd_tag(int argc, char *argv[])
6703 {
6704 	const struct got_error *error = NULL;
6705 	struct got_repository *repo = NULL;
6706 	struct got_worktree *worktree = NULL;
6707 	char *cwd = NULL, *repo_path = NULL, *commit_id_str = NULL;
6708 	char *gitconfig_path = NULL;
6709 	const char *tag_name, *commit_id_arg = NULL, *tagmsg = NULL;
6710 	int ch, do_list = 0;
6711 
6712 	while ((ch = getopt(argc, argv, "c:m:r:l")) != -1) {
6713 		switch (ch) {
6714 		case 'c':
6715 			commit_id_arg = optarg;
6716 			break;
6717 		case 'm':
6718 			tagmsg = optarg;
6719 			break;
6720 		case 'r':
6721 			repo_path = realpath(optarg, NULL);
6722 			if (repo_path == NULL)
6723 				return got_error_from_errno2("realpath",
6724 				    optarg);
6725 			got_path_strip_trailing_slashes(repo_path);
6726 			break;
6727 		case 'l':
6728 			do_list = 1;
6729 			break;
6730 		default:
6731 			usage_tag();
6732 			/* NOTREACHED */
6733 		}
6734 	}
6735 
6736 	argc -= optind;
6737 	argv += optind;
6738 
6739 	if (do_list) {
6740 		if (commit_id_arg != NULL)
6741 			errx(1,
6742 			    "-c option can only be used when creating a tag");
6743 		if (tagmsg)
6744 			option_conflict('l', 'm');
6745 		if (argc > 0)
6746 			usage_tag();
6747 	} else if (argc != 1)
6748 		usage_tag();
6749 
6750 	tag_name = argv[0];
6751 
6752 #ifndef PROFILE
6753 	if (do_list) {
6754 		if (pledge("stdio rpath wpath flock proc exec sendfd unveil",
6755 		    NULL) == -1)
6756 			err(1, "pledge");
6757 	} else {
6758 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
6759 		    "sendfd unveil", NULL) == -1)
6760 			err(1, "pledge");
6761 	}
6762 #endif
6763 	cwd = getcwd(NULL, 0);
6764 	if (cwd == NULL) {
6765 		error = got_error_from_errno("getcwd");
6766 		goto done;
6767 	}
6768 
6769 	if (repo_path == NULL) {
6770 		error = got_worktree_open(&worktree, cwd);
6771 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
6772 			goto done;
6773 		else
6774 			error = NULL;
6775 		if (worktree) {
6776 			repo_path =
6777 			    strdup(got_worktree_get_repo_path(worktree));
6778 			if (repo_path == NULL)
6779 				error = got_error_from_errno("strdup");
6780 			if (error)
6781 				goto done;
6782 		} else {
6783 			repo_path = strdup(cwd);
6784 			if (repo_path == NULL) {
6785 				error = got_error_from_errno("strdup");
6786 				goto done;
6787 			}
6788 		}
6789 	}
6790 
6791 	if (do_list) {
6792 		error = got_repo_open(&repo, repo_path, NULL);
6793 		if (error != NULL)
6794 			goto done;
6795 		error = apply_unveil(got_repo_get_path(repo), 1, NULL);
6796 		if (error)
6797 			goto done;
6798 		error = list_tags(repo, worktree);
6799 	} else {
6800 		error = get_gitconfig_path(&gitconfig_path);
6801 		if (error)
6802 			goto done;
6803 		error = got_repo_open(&repo, repo_path, gitconfig_path);
6804 		if (error != NULL)
6805 			goto done;
6806 
6807 		if (tagmsg) {
6808 			error = apply_unveil(got_repo_get_path(repo), 0, NULL);
6809 			if (error)
6810 				goto done;
6811 		}
6812 
6813 		if (commit_id_arg == NULL) {
6814 			struct got_reference *head_ref;
6815 			struct got_object_id *commit_id;
6816 			error = got_ref_open(&head_ref, repo,
6817 			    worktree ? got_worktree_get_head_ref_name(worktree)
6818 			    : GOT_REF_HEAD, 0);
6819 			if (error)
6820 				goto done;
6821 			error = got_ref_resolve(&commit_id, repo, head_ref);
6822 			got_ref_close(head_ref);
6823 			if (error)
6824 				goto done;
6825 			error = got_object_id_str(&commit_id_str, commit_id);
6826 			free(commit_id);
6827 			if (error)
6828 				goto done;
6829 		}
6830 
6831 		error = add_tag(repo, worktree, tag_name,
6832 		    commit_id_str ? commit_id_str : commit_id_arg, tagmsg);
6833 	}
6834 done:
6835 	if (repo) {
6836 		const struct got_error *close_err = got_repo_close(repo);
6837 		if (error == NULL)
6838 			error = close_err;
6839 	}
6840 	if (worktree)
6841 		got_worktree_close(worktree);
6842 	free(cwd);
6843 	free(repo_path);
6844 	free(gitconfig_path);
6845 	free(commit_id_str);
6846 	return error;
6847 }
6848 
6849 __dead static void
6850 usage_add(void)
6851 {
6852 	fprintf(stderr, "usage: %s add [-R] [-I] path ...\n",
6853 	    getprogname());
6854 	exit(1);
6855 }
6856 
6857 static const struct got_error *
6858 add_progress(void *arg, unsigned char status, const char *path)
6859 {
6860 	while (path[0] == '/')
6861 		path++;
6862 	printf("%c  %s\n", status, path);
6863 	return NULL;
6864 }
6865 
6866 static const struct got_error *
6867 cmd_add(int argc, char *argv[])
6868 {
6869 	const struct got_error *error = NULL;
6870 	struct got_repository *repo = NULL;
6871 	struct got_worktree *worktree = NULL;
6872 	char *cwd = NULL;
6873 	struct got_pathlist_head paths;
6874 	struct got_pathlist_entry *pe;
6875 	int ch, can_recurse = 0, no_ignores = 0;
6876 
6877 	TAILQ_INIT(&paths);
6878 
6879 	while ((ch = getopt(argc, argv, "IR")) != -1) {
6880 		switch (ch) {
6881 		case 'I':
6882 			no_ignores = 1;
6883 			break;
6884 		case 'R':
6885 			can_recurse = 1;
6886 			break;
6887 		default:
6888 			usage_add();
6889 			/* NOTREACHED */
6890 		}
6891 	}
6892 
6893 	argc -= optind;
6894 	argv += optind;
6895 
6896 #ifndef PROFILE
6897 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
6898 	    NULL) == -1)
6899 		err(1, "pledge");
6900 #endif
6901 	if (argc < 1)
6902 		usage_add();
6903 
6904 	cwd = getcwd(NULL, 0);
6905 	if (cwd == NULL) {
6906 		error = got_error_from_errno("getcwd");
6907 		goto done;
6908 	}
6909 
6910 	error = got_worktree_open(&worktree, cwd);
6911 	if (error) {
6912 		if (error->code == GOT_ERR_NOT_WORKTREE)
6913 			error = wrap_not_worktree_error(error, "add", cwd);
6914 		goto done;
6915 	}
6916 
6917 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
6918 	    NULL);
6919 	if (error != NULL)
6920 		goto done;
6921 
6922 	error = apply_unveil(got_repo_get_path(repo), 1,
6923 	    got_worktree_get_root_path(worktree));
6924 	if (error)
6925 		goto done;
6926 
6927 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
6928 	if (error)
6929 		goto done;
6930 
6931 	if (!can_recurse) {
6932 		char *ondisk_path;
6933 		struct stat sb;
6934 		TAILQ_FOREACH(pe, &paths, entry) {
6935 			if (asprintf(&ondisk_path, "%s/%s",
6936 			    got_worktree_get_root_path(worktree),
6937 			    pe->path) == -1) {
6938 				error = got_error_from_errno("asprintf");
6939 				goto done;
6940 			}
6941 			if (lstat(ondisk_path, &sb) == -1) {
6942 				if (errno == ENOENT) {
6943 					free(ondisk_path);
6944 					continue;
6945 				}
6946 				error = got_error_from_errno2("lstat",
6947 				    ondisk_path);
6948 				free(ondisk_path);
6949 				goto done;
6950 			}
6951 			free(ondisk_path);
6952 			if (S_ISDIR(sb.st_mode)) {
6953 				error = got_error_msg(GOT_ERR_BAD_PATH,
6954 				    "adding directories requires -R option");
6955 				goto done;
6956 			}
6957 		}
6958 	}
6959 
6960 	error = got_worktree_schedule_add(worktree, &paths, add_progress,
6961 	    NULL, repo, no_ignores);
6962 done:
6963 	if (repo) {
6964 		const struct got_error *close_err = got_repo_close(repo);
6965 		if (error == NULL)
6966 			error = close_err;
6967 	}
6968 	if (worktree)
6969 		got_worktree_close(worktree);
6970 	TAILQ_FOREACH(pe, &paths, entry)
6971 		free((char *)pe->path);
6972 	got_pathlist_free(&paths);
6973 	free(cwd);
6974 	return error;
6975 }
6976 
6977 __dead static void
6978 usage_remove(void)
6979 {
6980 	fprintf(stderr, "usage: %s remove [-f] [-k] [-R] [-s status-codes] "
6981 	    "path ...\n", getprogname());
6982 	exit(1);
6983 }
6984 
6985 static const struct got_error *
6986 print_remove_status(void *arg, unsigned char status,
6987     unsigned char staged_status, const char *path)
6988 {
6989 	while (path[0] == '/')
6990 		path++;
6991 	if (status == GOT_STATUS_NONEXISTENT)
6992 		return NULL;
6993 	if (status == staged_status && (status == GOT_STATUS_DELETE))
6994 		status = GOT_STATUS_NO_CHANGE;
6995 	printf("%c%c %s\n", status, staged_status, path);
6996 	return NULL;
6997 }
6998 
6999 static const struct got_error *
7000 cmd_remove(int argc, char *argv[])
7001 {
7002 	const struct got_error *error = NULL;
7003 	struct got_worktree *worktree = NULL;
7004 	struct got_repository *repo = NULL;
7005 	const char *status_codes = NULL;
7006 	char *cwd = NULL;
7007 	struct got_pathlist_head paths;
7008 	struct got_pathlist_entry *pe;
7009 	int ch, delete_local_mods = 0, can_recurse = 0, keep_on_disk = 0, i;
7010 	int ignore_missing_paths = 0;
7011 
7012 	TAILQ_INIT(&paths);
7013 
7014 	while ((ch = getopt(argc, argv, "fkRs:")) != -1) {
7015 		switch (ch) {
7016 		case 'f':
7017 			delete_local_mods = 1;
7018 			ignore_missing_paths = 1;
7019 			break;
7020 		case 'k':
7021 			keep_on_disk = 1;
7022 			break;
7023 		case 'R':
7024 			can_recurse = 1;
7025 			break;
7026 		case 's':
7027 			for (i = 0; i < strlen(optarg); i++) {
7028 				switch (optarg[i]) {
7029 				case GOT_STATUS_MODIFY:
7030 					delete_local_mods = 1;
7031 					break;
7032 				case GOT_STATUS_MISSING:
7033 					ignore_missing_paths = 1;
7034 					break;
7035 				default:
7036 					errx(1, "invalid status code '%c'",
7037 					    optarg[i]);
7038 				}
7039 			}
7040 			status_codes = optarg;
7041 			break;
7042 		default:
7043 			usage_remove();
7044 			/* NOTREACHED */
7045 		}
7046 	}
7047 
7048 	argc -= optind;
7049 	argv += optind;
7050 
7051 #ifndef PROFILE
7052 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
7053 	    NULL) == -1)
7054 		err(1, "pledge");
7055 #endif
7056 	if (argc < 1)
7057 		usage_remove();
7058 
7059 	cwd = getcwd(NULL, 0);
7060 	if (cwd == NULL) {
7061 		error = got_error_from_errno("getcwd");
7062 		goto done;
7063 	}
7064 	error = got_worktree_open(&worktree, cwd);
7065 	if (error) {
7066 		if (error->code == GOT_ERR_NOT_WORKTREE)
7067 			error = wrap_not_worktree_error(error, "remove", cwd);
7068 		goto done;
7069 	}
7070 
7071 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
7072 	    NULL);
7073 	if (error)
7074 		goto done;
7075 
7076 	error = apply_unveil(got_repo_get_path(repo), 1,
7077 	    got_worktree_get_root_path(worktree));
7078 	if (error)
7079 		goto done;
7080 
7081 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
7082 	if (error)
7083 		goto done;
7084 
7085 	if (!can_recurse) {
7086 		char *ondisk_path;
7087 		struct stat sb;
7088 		TAILQ_FOREACH(pe, &paths, entry) {
7089 			if (asprintf(&ondisk_path, "%s/%s",
7090 			    got_worktree_get_root_path(worktree),
7091 			    pe->path) == -1) {
7092 				error = got_error_from_errno("asprintf");
7093 				goto done;
7094 			}
7095 			if (lstat(ondisk_path, &sb) == -1) {
7096 				if (errno == ENOENT) {
7097 					free(ondisk_path);
7098 					continue;
7099 				}
7100 				error = got_error_from_errno2("lstat",
7101 				    ondisk_path);
7102 				free(ondisk_path);
7103 				goto done;
7104 			}
7105 			free(ondisk_path);
7106 			if (S_ISDIR(sb.st_mode)) {
7107 				error = got_error_msg(GOT_ERR_BAD_PATH,
7108 				    "removing directories requires -R option");
7109 				goto done;
7110 			}
7111 		}
7112 	}
7113 
7114 	error = got_worktree_schedule_delete(worktree, &paths,
7115 	    delete_local_mods, status_codes, print_remove_status, NULL,
7116 	    repo, keep_on_disk, ignore_missing_paths);
7117 done:
7118 	if (repo) {
7119 		const struct got_error *close_err = got_repo_close(repo);
7120 		if (error == NULL)
7121 			error = close_err;
7122 	}
7123 	if (worktree)
7124 		got_worktree_close(worktree);
7125 	TAILQ_FOREACH(pe, &paths, entry)
7126 		free((char *)pe->path);
7127 	got_pathlist_free(&paths);
7128 	free(cwd);
7129 	return error;
7130 }
7131 
7132 __dead static void
7133 usage_patch(void)
7134 {
7135 	fprintf(stderr, "usage: %s patch [-n] [patchfile]\n",
7136 	    getprogname());
7137 	exit(1);
7138 }
7139 
7140 static const struct got_error *
7141 patch_from_stdin(int *patchfd)
7142 {
7143 	const struct got_error *err = NULL;
7144 	ssize_t r;
7145 	char *path, buf[BUFSIZ];
7146 	sig_t sighup, sigint, sigquit;
7147 
7148 	err = got_opentemp_named_fd(&path, patchfd,
7149 	    GOT_TMPDIR_STR "/got-patch");
7150 	if (err)
7151 		return err;
7152 	unlink(path);
7153 	free(path);
7154 
7155 	sighup = signal(SIGHUP, SIG_DFL);
7156 	sigint = signal(SIGINT, SIG_DFL);
7157 	sigquit = signal(SIGQUIT, SIG_DFL);
7158 
7159 	for (;;) {
7160 		r = read(0, buf, sizeof(buf));
7161 		if (r == -1) {
7162 			err = got_error_from_errno("read");
7163 			break;
7164 		}
7165 		if (r == 0)
7166 			break;
7167 		if (write(*patchfd, buf, r) == -1) {
7168 			err = got_error_from_errno("write");
7169 			break;
7170 		}
7171 	}
7172 
7173 	signal(SIGHUP, sighup);
7174 	signal(SIGINT, sigint);
7175 	signal(SIGQUIT, sigquit);
7176 
7177 	if (err == NULL && lseek(*patchfd, 0, SEEK_SET) == -1)
7178 		err = got_error_from_errno("lseek");
7179 
7180 	if (err != NULL) {
7181 		close(*patchfd);
7182 		*patchfd = -1;
7183 	}
7184 
7185 	return err;
7186 }
7187 
7188 static const struct got_error *
7189 cmd_patch(int argc, char *argv[])
7190 {
7191 	const struct got_error *error = NULL, *close_error = NULL;
7192 	struct got_worktree *worktree = NULL;
7193 	struct got_repository *repo = NULL;
7194 	char *cwd = NULL;
7195 	int ch, nop = 0;
7196 	int patchfd;
7197 
7198 	while ((ch = getopt(argc, argv, "n")) != -1) {
7199 		switch (ch) {
7200 		case 'n':
7201 			nop = 1;
7202 			break;
7203 		default:
7204 			usage_patch();
7205 			/* NOTREACHED */
7206 		}
7207 	}
7208 
7209 	argc -= optind;
7210 	argv += optind;
7211 
7212 	if (argc == 0) {
7213 		error = patch_from_stdin(&patchfd);
7214 		if (error)
7215 			return error;
7216 	} else if (argc == 1) {
7217 		patchfd = open(argv[0], O_RDONLY);
7218 		if (patchfd == -1) {
7219 			error = got_error_from_errno2("open", argv[0]);
7220 			return error;
7221 		}
7222 	} else
7223 		usage_patch();
7224 
7225 	if ((cwd = getcwd(NULL, 0)) == NULL) {
7226 		error = got_error_from_errno("getcwd");
7227 		goto done;
7228 	}
7229 
7230 	error = got_worktree_open(&worktree, cwd);
7231 	if (error != NULL)
7232 		goto done;
7233 
7234 	const char *repo_path = got_worktree_get_repo_path(worktree);
7235 	error = got_repo_open(&repo, repo_path, NULL);
7236 	if (error != NULL)
7237 		goto done;
7238 
7239 	error = apply_unveil(got_repo_get_path(repo), 0,
7240 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
7241 	if (error != NULL)
7242 		goto done;
7243 
7244 #ifndef PROFILE
7245 	if (pledge("stdio rpath wpath cpath proc exec sendfd flock",
7246 	    NULL) == -1)
7247 		err(1, "pledge");
7248 #endif
7249 
7250 	error = got_patch(patchfd, worktree, repo, nop, &print_remove_status,
7251 	    NULL, &add_progress, NULL, check_cancelled, NULL);
7252 
7253 done:
7254 	if (repo) {
7255 		close_error = got_repo_close(repo);
7256 		if (error == NULL)
7257 			error = close_error;
7258 	}
7259 	if (worktree != NULL) {
7260 		close_error = got_worktree_close(worktree);
7261 		if (error == NULL)
7262 			error = close_error;
7263 	}
7264 	free(cwd);
7265 	return error;
7266 }
7267 
7268 __dead static void
7269 usage_revert(void)
7270 {
7271 	fprintf(stderr, "usage: %s revert [-p] [-F response-script] [-R] "
7272 	    "path ...\n", getprogname());
7273 	exit(1);
7274 }
7275 
7276 static const struct got_error *
7277 revert_progress(void *arg, unsigned char status, const char *path)
7278 {
7279 	if (status == GOT_STATUS_UNVERSIONED)
7280 		return NULL;
7281 
7282 	while (path[0] == '/')
7283 		path++;
7284 	printf("%c  %s\n", status, path);
7285 	return NULL;
7286 }
7287 
7288 struct choose_patch_arg {
7289 	FILE *patch_script_file;
7290 	const char *action;
7291 };
7292 
7293 static const struct got_error *
7294 show_change(unsigned char status, const char *path, FILE *patch_file, int n,
7295     int nchanges, const char *action)
7296 {
7297 	char *line = NULL;
7298 	size_t linesize = 0;
7299 	ssize_t linelen;
7300 
7301 	switch (status) {
7302 	case GOT_STATUS_ADD:
7303 		printf("A  %s\n%s this addition? [y/n] ", path, action);
7304 		break;
7305 	case GOT_STATUS_DELETE:
7306 		printf("D  %s\n%s this deletion? [y/n] ", path, action);
7307 		break;
7308 	case GOT_STATUS_MODIFY:
7309 		if (fseek(patch_file, 0L, SEEK_SET) == -1)
7310 			return got_error_from_errno("fseek");
7311 		printf(GOT_COMMIT_SEP_STR);
7312 		while ((linelen = getline(&line, &linesize, patch_file)) != -1)
7313 			printf("%s", line);
7314 		if (ferror(patch_file))
7315 			return got_error_from_errno("getline");
7316 		printf(GOT_COMMIT_SEP_STR);
7317 		printf("M  %s (change %d of %d)\n%s this change? [y/n/q] ",
7318 		    path, n, nchanges, action);
7319 		break;
7320 	default:
7321 		return got_error_path(path, GOT_ERR_FILE_STATUS);
7322 	}
7323 
7324 	return NULL;
7325 }
7326 
7327 static const struct got_error *
7328 choose_patch(int *choice, void *arg, unsigned char status, const char *path,
7329     FILE *patch_file, int n, int nchanges)
7330 {
7331 	const struct got_error *err = NULL;
7332 	char *line = NULL;
7333 	size_t linesize = 0;
7334 	ssize_t linelen;
7335 	int resp = ' ';
7336 	struct choose_patch_arg *a = arg;
7337 
7338 	*choice = GOT_PATCH_CHOICE_NONE;
7339 
7340 	if (a->patch_script_file) {
7341 		char *nl;
7342 		err = show_change(status, path, patch_file, n, nchanges,
7343 		    a->action);
7344 		if (err)
7345 			return err;
7346 		linelen = getline(&line, &linesize, a->patch_script_file);
7347 		if (linelen == -1) {
7348 			if (ferror(a->patch_script_file))
7349 				return got_error_from_errno("getline");
7350 			return NULL;
7351 		}
7352 		nl = strchr(line, '\n');
7353 		if (nl)
7354 			*nl = '\0';
7355 		if (strcmp(line, "y") == 0) {
7356 			*choice = GOT_PATCH_CHOICE_YES;
7357 			printf("y\n");
7358 		} else if (strcmp(line, "n") == 0) {
7359 			*choice = GOT_PATCH_CHOICE_NO;
7360 			printf("n\n");
7361 		} else if (strcmp(line, "q") == 0 &&
7362 		    status == GOT_STATUS_MODIFY) {
7363 			*choice = GOT_PATCH_CHOICE_QUIT;
7364 			printf("q\n");
7365 		} else
7366 			printf("invalid response '%s'\n", line);
7367 		free(line);
7368 		return NULL;
7369 	}
7370 
7371 	while (resp != 'y' && resp != 'n' && resp != 'q') {
7372 		err = show_change(status, path, patch_file, n, nchanges,
7373 		    a->action);
7374 		if (err)
7375 			return err;
7376 		resp = getchar();
7377 		if (resp == '\n')
7378 			resp = getchar();
7379 		if (status == GOT_STATUS_MODIFY) {
7380 			if (resp != 'y' && resp != 'n' && resp != 'q') {
7381 				printf("invalid response '%c'\n", resp);
7382 				resp = ' ';
7383 			}
7384 		} else if (resp != 'y' && resp != 'n') {
7385 				printf("invalid response '%c'\n", resp);
7386 				resp = ' ';
7387 		}
7388 	}
7389 
7390 	if (resp == 'y')
7391 		*choice = GOT_PATCH_CHOICE_YES;
7392 	else if (resp == 'n')
7393 		*choice = GOT_PATCH_CHOICE_NO;
7394 	else if (resp == 'q' && status == GOT_STATUS_MODIFY)
7395 		*choice = GOT_PATCH_CHOICE_QUIT;
7396 
7397 	return NULL;
7398 }
7399 
7400 static const struct got_error *
7401 cmd_revert(int argc, char *argv[])
7402 {
7403 	const struct got_error *error = NULL;
7404 	struct got_worktree *worktree = NULL;
7405 	struct got_repository *repo = NULL;
7406 	char *cwd = NULL, *path = NULL;
7407 	struct got_pathlist_head paths;
7408 	struct got_pathlist_entry *pe;
7409 	int ch, can_recurse = 0, pflag = 0;
7410 	FILE *patch_script_file = NULL;
7411 	const char *patch_script_path = NULL;
7412 	struct choose_patch_arg cpa;
7413 
7414 	TAILQ_INIT(&paths);
7415 
7416 	while ((ch = getopt(argc, argv, "pF:R")) != -1) {
7417 		switch (ch) {
7418 		case 'p':
7419 			pflag = 1;
7420 			break;
7421 		case 'F':
7422 			patch_script_path = optarg;
7423 			break;
7424 		case 'R':
7425 			can_recurse = 1;
7426 			break;
7427 		default:
7428 			usage_revert();
7429 			/* NOTREACHED */
7430 		}
7431 	}
7432 
7433 	argc -= optind;
7434 	argv += optind;
7435 
7436 #ifndef PROFILE
7437 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
7438 	    "unveil", NULL) == -1)
7439 		err(1, "pledge");
7440 #endif
7441 	if (argc < 1)
7442 		usage_revert();
7443 	if (patch_script_path && !pflag)
7444 		errx(1, "-F option can only be used together with -p option");
7445 
7446 	cwd = getcwd(NULL, 0);
7447 	if (cwd == NULL) {
7448 		error = got_error_from_errno("getcwd");
7449 		goto done;
7450 	}
7451 	error = got_worktree_open(&worktree, cwd);
7452 	if (error) {
7453 		if (error->code == GOT_ERR_NOT_WORKTREE)
7454 			error = wrap_not_worktree_error(error, "revert", cwd);
7455 		goto done;
7456 	}
7457 
7458 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
7459 	    NULL);
7460 	if (error != NULL)
7461 		goto done;
7462 
7463 	if (patch_script_path) {
7464 		patch_script_file = fopen(patch_script_path, "re");
7465 		if (patch_script_file == NULL) {
7466 			error = got_error_from_errno2("fopen",
7467 			    patch_script_path);
7468 			goto done;
7469 		}
7470 	}
7471 	error = apply_unveil(got_repo_get_path(repo), 1,
7472 	    got_worktree_get_root_path(worktree));
7473 	if (error)
7474 		goto done;
7475 
7476 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
7477 	if (error)
7478 		goto done;
7479 
7480 	if (!can_recurse) {
7481 		char *ondisk_path;
7482 		struct stat sb;
7483 		TAILQ_FOREACH(pe, &paths, entry) {
7484 			if (asprintf(&ondisk_path, "%s/%s",
7485 			    got_worktree_get_root_path(worktree),
7486 			    pe->path) == -1) {
7487 				error = got_error_from_errno("asprintf");
7488 				goto done;
7489 			}
7490 			if (lstat(ondisk_path, &sb) == -1) {
7491 				if (errno == ENOENT) {
7492 					free(ondisk_path);
7493 					continue;
7494 				}
7495 				error = got_error_from_errno2("lstat",
7496 				    ondisk_path);
7497 				free(ondisk_path);
7498 				goto done;
7499 			}
7500 			free(ondisk_path);
7501 			if (S_ISDIR(sb.st_mode)) {
7502 				error = got_error_msg(GOT_ERR_BAD_PATH,
7503 				    "reverting directories requires -R option");
7504 				goto done;
7505 			}
7506 		}
7507 	}
7508 
7509 	cpa.patch_script_file = patch_script_file;
7510 	cpa.action = "revert";
7511 	error = got_worktree_revert(worktree, &paths, revert_progress, NULL,
7512 	    pflag ? choose_patch : NULL, &cpa, repo);
7513 done:
7514 	if (patch_script_file && fclose(patch_script_file) == EOF &&
7515 	    error == NULL)
7516 		error = got_error_from_errno2("fclose", patch_script_path);
7517 	if (repo) {
7518 		const struct got_error *close_err = got_repo_close(repo);
7519 		if (error == NULL)
7520 			error = close_err;
7521 	}
7522 	if (worktree)
7523 		got_worktree_close(worktree);
7524 	free(path);
7525 	free(cwd);
7526 	return error;
7527 }
7528 
7529 __dead static void
7530 usage_commit(void)
7531 {
7532 	fprintf(stderr, "usage: %s commit [-F path] [-m msg] [-N] [-S] "
7533 	    "[path ...]\n", getprogname());
7534 	exit(1);
7535 }
7536 
7537 struct collect_commit_logmsg_arg {
7538 	const char *cmdline_log;
7539 	const char *prepared_log;
7540 	int non_interactive;
7541 	const char *editor;
7542 	const char *worktree_path;
7543 	const char *branch_name;
7544 	const char *repo_path;
7545 	char *logmsg_path;
7546 
7547 };
7548 
7549 static const struct got_error *
7550 read_prepared_logmsg(char **logmsg, const char *path)
7551 {
7552 	const struct got_error *err = NULL;
7553 	FILE *f = NULL;
7554 	struct stat sb;
7555 	size_t r;
7556 
7557 	*logmsg = NULL;
7558 	memset(&sb, 0, sizeof(sb));
7559 
7560 	f = fopen(path, "re");
7561 	if (f == NULL)
7562 		return got_error_from_errno2("fopen", path);
7563 
7564 	if (fstat(fileno(f), &sb) == -1) {
7565 		err = got_error_from_errno2("fstat", path);
7566 		goto done;
7567 	}
7568 	if (sb.st_size == 0) {
7569 		err = got_error(GOT_ERR_COMMIT_MSG_EMPTY);
7570 		goto done;
7571 	}
7572 
7573 	*logmsg = malloc(sb.st_size + 1);
7574 	if (*logmsg == NULL) {
7575 		err = got_error_from_errno("malloc");
7576 		goto done;
7577 	}
7578 
7579 	r = fread(*logmsg, 1, sb.st_size, f);
7580 	if (r != sb.st_size) {
7581 		if (ferror(f))
7582 			err = got_error_from_errno2("fread", path);
7583 		else
7584 			err = got_error(GOT_ERR_IO);
7585 		goto done;
7586 	}
7587 	(*logmsg)[sb.st_size] = '\0';
7588 done:
7589 	if (fclose(f) == EOF && err == NULL)
7590 		err = got_error_from_errno2("fclose", path);
7591 	if (err) {
7592 		free(*logmsg);
7593 		*logmsg = NULL;
7594 	}
7595 	return err;
7596 	
7597 }
7598 
7599 static const struct got_error *
7600 collect_commit_logmsg(struct got_pathlist_head *commitable_paths, char **logmsg,
7601     void *arg)
7602 {
7603 	char *initial_content = NULL;
7604 	struct got_pathlist_entry *pe;
7605 	const struct got_error *err = NULL;
7606 	char *template = NULL;
7607 	struct collect_commit_logmsg_arg *a = arg;
7608 	int initial_content_len;
7609 	int fd = -1;
7610 	size_t len;
7611 
7612 	/* if a message was specified on the command line, just use it */
7613 	if (a->cmdline_log != NULL && strlen(a->cmdline_log) != 0) {
7614 		len = strlen(a->cmdline_log) + 1;
7615 		*logmsg = malloc(len + 1);
7616 		if (*logmsg == NULL)
7617 			return got_error_from_errno("malloc");
7618 		strlcpy(*logmsg, a->cmdline_log, len);
7619 		return NULL;
7620 	} else if (a->prepared_log != NULL && a->non_interactive)
7621 		return read_prepared_logmsg(logmsg, a->prepared_log);
7622 
7623 	if (asprintf(&template, "%s/logmsg", a->worktree_path) == -1)
7624 		return got_error_from_errno("asprintf");
7625 
7626 	err = got_opentemp_named_fd(&a->logmsg_path, &fd, template);
7627 	if (err)
7628 		goto done;
7629 
7630 	if (a->prepared_log) {
7631 		char *msg;
7632 		err = read_prepared_logmsg(&msg, a->prepared_log);
7633 		if (err)
7634 			goto done;
7635 		if (write(fd, msg, strlen(msg)) == -1) {
7636 			err = got_error_from_errno2("write", a->logmsg_path);
7637 			free(msg);
7638 			goto done;
7639 		}
7640 		free(msg);
7641 	}
7642 
7643 	initial_content_len = asprintf(&initial_content,
7644 	    "\n# changes to be committed on branch %s:\n",
7645 	    a->branch_name);
7646 	if (initial_content_len == -1) {
7647 		err = got_error_from_errno("asprintf");
7648 		goto done;
7649 	}
7650 
7651 	if (write(fd, initial_content, initial_content_len) == -1) {
7652 		err = got_error_from_errno2("write", a->logmsg_path);
7653 		goto done;
7654 	}
7655 
7656 	TAILQ_FOREACH(pe, commitable_paths, entry) {
7657 		struct got_commitable *ct = pe->data;
7658 		dprintf(fd, "#  %c  %s\n",
7659 		    got_commitable_get_status(ct),
7660 		    got_commitable_get_path(ct));
7661 	}
7662 
7663 	err = edit_logmsg(logmsg, a->editor, a->logmsg_path, initial_content,
7664 	    initial_content_len, a->prepared_log ? 0 : 1);
7665 done:
7666 	free(initial_content);
7667 	free(template);
7668 
7669 	if (fd != -1 && close(fd) == -1 && err == NULL)
7670 		err = got_error_from_errno2("close", a->logmsg_path);
7671 
7672 	/* Editor is done; we can now apply unveil(2) */
7673 	if (err == NULL)
7674 		err = apply_unveil(a->repo_path, 0, a->worktree_path);
7675 	if (err) {
7676 		free(*logmsg);
7677 		*logmsg = NULL;
7678 	}
7679 	return err;
7680 }
7681 
7682 static const struct got_error *
7683 cmd_commit(int argc, char *argv[])
7684 {
7685 	const struct got_error *error = NULL;
7686 	struct got_worktree *worktree = NULL;
7687 	struct got_repository *repo = NULL;
7688 	char *cwd = NULL, *id_str = NULL;
7689 	struct got_object_id *id = NULL;
7690 	const char *logmsg = NULL;
7691 	char *prepared_logmsg = NULL;
7692 	struct collect_commit_logmsg_arg cl_arg;
7693 	char *gitconfig_path = NULL, *editor = NULL, *author = NULL;
7694 	int ch, rebase_in_progress, histedit_in_progress, preserve_logmsg = 0;
7695 	int allow_bad_symlinks = 0, non_interactive = 0, merge_in_progress = 0;
7696 	struct got_pathlist_head paths;
7697 
7698 	TAILQ_INIT(&paths);
7699 	cl_arg.logmsg_path = NULL;
7700 
7701 	while ((ch = getopt(argc, argv, "F:m:NS")) != -1) {
7702 		switch (ch) {
7703 		case 'F':
7704 			if (logmsg != NULL)
7705 				option_conflict('F', 'm');
7706 			prepared_logmsg = realpath(optarg, NULL);
7707 			if (prepared_logmsg == NULL)
7708 				return got_error_from_errno2("realpath",
7709 				    optarg);
7710 			break;
7711 		case 'm':
7712 			if (prepared_logmsg)
7713 				option_conflict('m', 'F');
7714 			logmsg = optarg;
7715 			break;
7716 		case 'N':
7717 			non_interactive = 1;
7718 			break;
7719 		case 'S':
7720 			allow_bad_symlinks = 1;
7721 			break;
7722 		default:
7723 			usage_commit();
7724 			/* NOTREACHED */
7725 		}
7726 	}
7727 
7728 	argc -= optind;
7729 	argv += optind;
7730 
7731 #ifndef PROFILE
7732 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
7733 	    "unveil", NULL) == -1)
7734 		err(1, "pledge");
7735 #endif
7736 	cwd = getcwd(NULL, 0);
7737 	if (cwd == NULL) {
7738 		error = got_error_from_errno("getcwd");
7739 		goto done;
7740 	}
7741 	error = got_worktree_open(&worktree, cwd);
7742 	if (error) {
7743 		if (error->code == GOT_ERR_NOT_WORKTREE)
7744 			error = wrap_not_worktree_error(error, "commit", cwd);
7745 		goto done;
7746 	}
7747 
7748 	error = got_worktree_rebase_in_progress(&rebase_in_progress, worktree);
7749 	if (error)
7750 		goto done;
7751 	if (rebase_in_progress) {
7752 		error = got_error(GOT_ERR_REBASING);
7753 		goto done;
7754 	}
7755 
7756 	error = got_worktree_histedit_in_progress(&histedit_in_progress,
7757 	    worktree);
7758 	if (error)
7759 		goto done;
7760 
7761 	error = get_gitconfig_path(&gitconfig_path);
7762 	if (error)
7763 		goto done;
7764 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
7765 	    gitconfig_path);
7766 	if (error != NULL)
7767 		goto done;
7768 
7769 	error = got_worktree_merge_in_progress(&merge_in_progress, worktree, repo);
7770 	if (error)
7771 		goto done;
7772 	if (merge_in_progress) {
7773 		error = got_error(GOT_ERR_MERGE_BUSY);
7774 		goto done;
7775 	}
7776 
7777 	error = get_author(&author, repo, worktree);
7778 	if (error)
7779 		return error;
7780 
7781 	/*
7782 	 * unveil(2) traverses exec(2); if an editor is used we have
7783 	 * to apply unveil after the log message has been written.
7784 	 */
7785 	if (logmsg == NULL || strlen(logmsg) == 0)
7786 		error = get_editor(&editor);
7787 	else
7788 		error = apply_unveil(got_repo_get_path(repo), 0,
7789 		    got_worktree_get_root_path(worktree));
7790 	if (error)
7791 		goto done;
7792 
7793 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
7794 	if (error)
7795 		goto done;
7796 
7797 	cl_arg.editor = editor;
7798 	cl_arg.cmdline_log = logmsg;
7799 	cl_arg.prepared_log = prepared_logmsg;
7800 	cl_arg.non_interactive = non_interactive;
7801 	cl_arg.worktree_path = got_worktree_get_root_path(worktree);
7802 	cl_arg.branch_name = got_worktree_get_head_ref_name(worktree);
7803 	if (!histedit_in_progress) {
7804 		if (strncmp(cl_arg.branch_name, "refs/heads/", 11) != 0) {
7805 			error = got_error(GOT_ERR_COMMIT_BRANCH);
7806 			goto done;
7807 		}
7808 		cl_arg.branch_name += 11;
7809 	}
7810 	cl_arg.repo_path = got_repo_get_path(repo);
7811 	error = got_worktree_commit(&id, worktree, &paths, author, NULL,
7812 	    allow_bad_symlinks, collect_commit_logmsg, &cl_arg,
7813 	    print_status, NULL, repo);
7814 	if (error) {
7815 		if (error->code != GOT_ERR_COMMIT_MSG_EMPTY &&
7816 		    cl_arg.logmsg_path != NULL)
7817 			preserve_logmsg = 1;
7818 		goto done;
7819 	}
7820 
7821 	error = got_object_id_str(&id_str, id);
7822 	if (error)
7823 		goto done;
7824 	printf("Created commit %s\n", id_str);
7825 done:
7826 	if (preserve_logmsg) {
7827 		fprintf(stderr, "%s: log message preserved in %s\n",
7828 		    getprogname(), cl_arg.logmsg_path);
7829 	} else if (cl_arg.logmsg_path && unlink(cl_arg.logmsg_path) == -1 &&
7830 	    error == NULL)
7831 		error = got_error_from_errno2("unlink", cl_arg.logmsg_path);
7832 	free(cl_arg.logmsg_path);
7833 	if (repo) {
7834 		const struct got_error *close_err = got_repo_close(repo);
7835 		if (error == NULL)
7836 			error = close_err;
7837 	}
7838 	if (worktree)
7839 		got_worktree_close(worktree);
7840 	free(cwd);
7841 	free(id_str);
7842 	free(gitconfig_path);
7843 	free(editor);
7844 	free(author);
7845 	free(prepared_logmsg);
7846 	return error;
7847 }
7848 
7849 __dead static void
7850 usage_send(void)
7851 {
7852 	fprintf(stderr, "usage: %s send [-a] [-b branch] [-d branch] [-f] "
7853 	    "[-r repository-path] [-t tag] [-T] [-q] [-v] "
7854 	    "[remote-repository]\n", getprogname());
7855 	exit(1);
7856 }
7857 
7858 struct got_send_progress_arg {
7859 	char last_scaled_packsize[FMT_SCALED_STRSIZE];
7860 	int verbosity;
7861 	int last_ncommits;
7862 	int last_nobj_total;
7863 	int last_p_deltify;
7864 	int last_p_written;
7865 	int last_p_sent;
7866 	int printed_something;
7867 	int sent_something;
7868 	struct got_pathlist_head *delete_branches;
7869 };
7870 
7871 static const struct got_error *
7872 send_progress(void *arg, off_t packfile_size, int ncommits, int nobj_total,
7873     int nobj_deltify, int nobj_written, off_t bytes_sent, const char *refname,
7874     int success)
7875 {
7876 	struct got_send_progress_arg *a = arg;
7877 	char scaled_packsize[FMT_SCALED_STRSIZE];
7878 	char scaled_sent[FMT_SCALED_STRSIZE];
7879 	int p_deltify = 0, p_written = 0, p_sent = 0;
7880 	int print_searching = 0, print_total = 0;
7881 	int print_deltify = 0, print_written = 0, print_sent = 0;
7882 
7883 	if (a->verbosity < 0)
7884 		return NULL;
7885 
7886 	if (refname) {
7887 		const char *status = success ? "accepted" : "rejected";
7888 
7889 		if (success) {
7890 			struct got_pathlist_entry *pe;
7891 			TAILQ_FOREACH(pe, a->delete_branches, entry) {
7892 				const char *branchname = pe->path;
7893 				if (got_path_cmp(branchname, refname,
7894 				    strlen(branchname), strlen(refname)) == 0) {
7895 					status = "deleted";
7896 					a->sent_something = 1;
7897 					break;
7898 				}
7899 			}
7900 		}
7901 
7902 		if (a->printed_something)
7903 			putchar('\n');
7904 		printf("Server has %s %s", status, refname);
7905 		a->printed_something = 1;
7906 		return NULL;
7907 	}
7908 
7909 	if (fmt_scaled(packfile_size, scaled_packsize) == -1)
7910 		return got_error_from_errno("fmt_scaled");
7911 	if (fmt_scaled(bytes_sent, scaled_sent) == -1)
7912 		return got_error_from_errno("fmt_scaled");
7913 
7914 	if (a->last_ncommits != ncommits) {
7915 		print_searching = 1;
7916 		a->last_ncommits = ncommits;
7917 	}
7918 
7919 	if (a->last_nobj_total != nobj_total) {
7920 		print_searching = 1;
7921 		print_total = 1;
7922 		a->last_nobj_total = nobj_total;
7923 	}
7924 
7925 	if (packfile_size > 0 && (a->last_scaled_packsize[0] == '\0' ||
7926 	    strcmp(scaled_packsize, a->last_scaled_packsize)) != 0) {
7927 		if (strlcpy(a->last_scaled_packsize, scaled_packsize,
7928 		    FMT_SCALED_STRSIZE) >= FMT_SCALED_STRSIZE)
7929 			return got_error(GOT_ERR_NO_SPACE);
7930 	}
7931 
7932 	if (nobj_deltify > 0 || nobj_written > 0) {
7933 		if (nobj_deltify > 0) {
7934 			p_deltify = (nobj_deltify * 100) / nobj_total;
7935 			if (p_deltify != a->last_p_deltify) {
7936 				a->last_p_deltify = p_deltify;
7937 				print_searching = 1;
7938 				print_total = 1;
7939 				print_deltify = 1;
7940 			}
7941 		}
7942 		if (nobj_written > 0) {
7943 			p_written = (nobj_written * 100) / nobj_total;
7944 			if (p_written != a->last_p_written) {
7945 				a->last_p_written = p_written;
7946 				print_searching = 1;
7947 				print_total = 1;
7948 				print_deltify = 1;
7949 				print_written = 1;
7950 			}
7951 		}
7952 	}
7953 
7954 	if (bytes_sent > 0) {
7955 		p_sent = (bytes_sent * 100) / packfile_size;
7956 		if (p_sent != a->last_p_sent) {
7957 			a->last_p_sent = p_sent;
7958 			print_searching = 1;
7959 			print_total = 1;
7960 			print_deltify = 1;
7961 			print_written = 1;
7962 			print_sent = 1;
7963 		}
7964 		a->sent_something = 1;
7965 	}
7966 
7967 	if (print_searching || print_total || print_deltify || print_written ||
7968 	    print_sent)
7969 		printf("\r");
7970 	if (print_searching)
7971 		printf("packing %d reference%s", ncommits,
7972 		    ncommits == 1 ? "" : "s");
7973 	if (print_total)
7974 		printf("; %d object%s", nobj_total,
7975 		    nobj_total == 1 ? "" : "s");
7976 	if (print_deltify)
7977 		printf("; deltify: %d%%", p_deltify);
7978 	if (print_sent)
7979 		printf("; uploading pack: %*s %d%%", FMT_SCALED_STRSIZE - 2,
7980 		    scaled_packsize, p_sent);
7981 	else if (print_written)
7982 		printf("; writing pack: %*s %d%%", FMT_SCALED_STRSIZE - 2,
7983 		    scaled_packsize, p_written);
7984 	if (print_searching || print_total || print_deltify ||
7985 	    print_written || print_sent) {
7986 		a->printed_something = 1;
7987 		fflush(stdout);
7988 	}
7989 	return NULL;
7990 }
7991 
7992 static const struct got_error *
7993 cmd_send(int argc, char *argv[])
7994 {
7995 	const struct got_error *error = NULL;
7996 	char *cwd = NULL, *repo_path = NULL;
7997 	const char *remote_name;
7998 	char *proto = NULL, *host = NULL, *port = NULL;
7999 	char *repo_name = NULL, *server_path = NULL;
8000 	const struct got_remote_repo *remotes, *remote = NULL;
8001 	int nremotes, nbranches = 0, ntags = 0, ndelete_branches = 0;
8002 	struct got_repository *repo = NULL;
8003 	struct got_worktree *worktree = NULL;
8004 	const struct got_gotconfig *repo_conf = NULL, *worktree_conf = NULL;
8005 	struct got_pathlist_head branches;
8006 	struct got_pathlist_head tags;
8007 	struct got_reflist_head all_branches;
8008 	struct got_reflist_head all_tags;
8009 	struct got_pathlist_head delete_args;
8010 	struct got_pathlist_head delete_branches;
8011 	struct got_reflist_entry *re;
8012 	struct got_pathlist_entry *pe;
8013 	int i, ch, sendfd = -1, sendstatus;
8014 	pid_t sendpid = -1;
8015 	struct got_send_progress_arg spa;
8016 	int verbosity = 0, overwrite_refs = 0;
8017 	int send_all_branches = 0, send_all_tags = 0;
8018 	struct got_reference *ref = NULL;
8019 
8020 	TAILQ_INIT(&branches);
8021 	TAILQ_INIT(&tags);
8022 	TAILQ_INIT(&all_branches);
8023 	TAILQ_INIT(&all_tags);
8024 	TAILQ_INIT(&delete_args);
8025 	TAILQ_INIT(&delete_branches);
8026 
8027 	while ((ch = getopt(argc, argv, "ab:d:fr:t:Tvq")) != -1) {
8028 		switch (ch) {
8029 		case 'a':
8030 			send_all_branches = 1;
8031 			break;
8032 		case 'b':
8033 			error = got_pathlist_append(&branches, optarg, NULL);
8034 			if (error)
8035 				return error;
8036 			nbranches++;
8037 			break;
8038 		case 'd':
8039 			error = got_pathlist_append(&delete_args, optarg, NULL);
8040 			if (error)
8041 				return error;
8042 			break;
8043 		case 'f':
8044 			overwrite_refs = 1;
8045 			break;
8046 		case 'r':
8047 			repo_path = realpath(optarg, NULL);
8048 			if (repo_path == NULL)
8049 				return got_error_from_errno2("realpath",
8050 				    optarg);
8051 			got_path_strip_trailing_slashes(repo_path);
8052 			break;
8053 		case 't':
8054 			error = got_pathlist_append(&tags, optarg, NULL);
8055 			if (error)
8056 				return error;
8057 			ntags++;
8058 			break;
8059 		case 'T':
8060 			send_all_tags = 1;
8061 			break;
8062 		case 'v':
8063 			if (verbosity < 0)
8064 				verbosity = 0;
8065 			else if (verbosity < 3)
8066 				verbosity++;
8067 			break;
8068 		case 'q':
8069 			verbosity = -1;
8070 			break;
8071 		default:
8072 			usage_send();
8073 			/* NOTREACHED */
8074 		}
8075 	}
8076 	argc -= optind;
8077 	argv += optind;
8078 
8079 	if (send_all_branches && !TAILQ_EMPTY(&branches))
8080 		option_conflict('a', 'b');
8081 	if (send_all_tags && !TAILQ_EMPTY(&tags))
8082 		option_conflict('T', 't');
8083 
8084 
8085 	if (argc == 0)
8086 		remote_name = GOT_SEND_DEFAULT_REMOTE_NAME;
8087 	else if (argc == 1)
8088 		remote_name = argv[0];
8089 	else
8090 		usage_send();
8091 
8092 	cwd = getcwd(NULL, 0);
8093 	if (cwd == NULL) {
8094 		error = got_error_from_errno("getcwd");
8095 		goto done;
8096 	}
8097 
8098 	if (repo_path == NULL) {
8099 		error = got_worktree_open(&worktree, cwd);
8100 		if (error && error->code != GOT_ERR_NOT_WORKTREE)
8101 			goto done;
8102 		else
8103 			error = NULL;
8104 		if (worktree) {
8105 			repo_path =
8106 			    strdup(got_worktree_get_repo_path(worktree));
8107 			if (repo_path == NULL)
8108 				error = got_error_from_errno("strdup");
8109 			if (error)
8110 				goto done;
8111 		} else {
8112 			repo_path = strdup(cwd);
8113 			if (repo_path == NULL) {
8114 				error = got_error_from_errno("strdup");
8115 				goto done;
8116 			}
8117 		}
8118 	}
8119 
8120 	error = got_repo_open(&repo, repo_path, NULL);
8121 	if (error)
8122 		goto done;
8123 
8124 	if (worktree) {
8125 		worktree_conf = got_worktree_get_gotconfig(worktree);
8126 		if (worktree_conf) {
8127 			got_gotconfig_get_remotes(&nremotes, &remotes,
8128 			    worktree_conf);
8129 			for (i = 0; i < nremotes; i++) {
8130 				if (strcmp(remotes[i].name, remote_name) == 0) {
8131 					remote = &remotes[i];
8132 					break;
8133 				}
8134 			}
8135 		}
8136 	}
8137 	if (remote == NULL) {
8138 		repo_conf = got_repo_get_gotconfig(repo);
8139 		if (repo_conf) {
8140 			got_gotconfig_get_remotes(&nremotes, &remotes,
8141 			    repo_conf);
8142 			for (i = 0; i < nremotes; i++) {
8143 				if (strcmp(remotes[i].name, remote_name) == 0) {
8144 					remote = &remotes[i];
8145 					break;
8146 				}
8147 			}
8148 		}
8149 	}
8150 	if (remote == NULL) {
8151 		got_repo_get_gitconfig_remotes(&nremotes, &remotes, repo);
8152 		for (i = 0; i < nremotes; i++) {
8153 			if (strcmp(remotes[i].name, remote_name) == 0) {
8154 				remote = &remotes[i];
8155 				break;
8156 			}
8157 		}
8158 	}
8159 	if (remote == NULL) {
8160 		error = got_error_path(remote_name, GOT_ERR_NO_REMOTE);
8161 		goto done;
8162 	}
8163 
8164 	error = got_dial_parse_uri(&proto, &host, &port, &server_path,
8165 	    &repo_name, remote->send_url);
8166 	if (error)
8167 		goto done;
8168 
8169 	if (strcmp(proto, "git") == 0) {
8170 #ifndef PROFILE
8171 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
8172 		    "sendfd dns inet unveil", NULL) == -1)
8173 			err(1, "pledge");
8174 #endif
8175 	} else if (strcmp(proto, "git+ssh") == 0 ||
8176 	    strcmp(proto, "ssh") == 0) {
8177 #ifndef PROFILE
8178 		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
8179 		    "sendfd unveil", NULL) == -1)
8180 			err(1, "pledge");
8181 #endif
8182 	} else if (strcmp(proto, "http") == 0 ||
8183 	    strcmp(proto, "git+http") == 0) {
8184 		error = got_error_path(proto, GOT_ERR_NOT_IMPL);
8185 		goto done;
8186 	} else {
8187 		error = got_error_path(proto, GOT_ERR_BAD_PROTO);
8188 		goto done;
8189 	}
8190 
8191 	error = got_dial_apply_unveil(proto);
8192 	if (error)
8193 		goto done;
8194 
8195 	error = apply_unveil(got_repo_get_path(repo), 0, NULL);
8196 	if (error)
8197 		goto done;
8198 
8199 	if (send_all_branches) {
8200 		error = got_ref_list(&all_branches, repo, "refs/heads",
8201 		    got_ref_cmp_by_name, NULL);
8202 		if (error)
8203 			goto done;
8204 		TAILQ_FOREACH(re, &all_branches, entry) {
8205 			const char *branchname = got_ref_get_name(re->ref);
8206 			error = got_pathlist_append(&branches,
8207 			    branchname, NULL);
8208 			if (error)
8209 				goto done;
8210 			nbranches++;
8211 		}
8212 	} else if (nbranches == 0) {
8213 		for (i = 0; i < remote->nsend_branches; i++) {
8214 			got_pathlist_append(&branches,
8215 			    remote->send_branches[i], NULL);
8216 		}
8217 	}
8218 
8219 	if (send_all_tags) {
8220 		error = got_ref_list(&all_tags, repo, "refs/tags",
8221 		    got_ref_cmp_by_name, NULL);
8222 		if (error)
8223 			goto done;
8224 		TAILQ_FOREACH(re, &all_tags, entry) {
8225 			const char *tagname = got_ref_get_name(re->ref);
8226 			error = got_pathlist_append(&tags,
8227 			    tagname, NULL);
8228 			if (error)
8229 				goto done;
8230 			ntags++;
8231 		}
8232 	}
8233 
8234 	/*
8235 	 * To prevent accidents only branches in refs/heads/ can be deleted
8236 	 * with 'got send -d'.
8237 	 * Deleting anything else requires local repository access or Git.
8238 	 */
8239 	TAILQ_FOREACH(pe, &delete_args, entry) {
8240 		const char *branchname = pe->path;
8241 		char *s;
8242 		struct got_pathlist_entry *new;
8243 		if (strncmp(branchname, "refs/heads/", 11) == 0) {
8244 			s = strdup(branchname);
8245 			if (s == NULL) {
8246 				error = got_error_from_errno("strdup");
8247 				goto done;
8248 			}
8249 		} else {
8250 			if (asprintf(&s, "refs/heads/%s", branchname) == -1) {
8251 				error = got_error_from_errno("asprintf");
8252 				goto done;
8253 			}
8254 		}
8255 		error = got_pathlist_insert(&new, &delete_branches, s, NULL);
8256 		if (error || new == NULL /* duplicate */)
8257 			free(s);
8258 		if (error)
8259 			goto done;
8260 		ndelete_branches++;
8261 	}
8262 
8263 	if (nbranches == 0 && ndelete_branches == 0) {
8264 		struct got_reference *head_ref;
8265 		if (worktree)
8266 			error = got_ref_open(&head_ref, repo,
8267 			    got_worktree_get_head_ref_name(worktree), 0);
8268 		else
8269 			error = got_ref_open(&head_ref, repo, GOT_REF_HEAD, 0);
8270 		if (error)
8271 			goto done;
8272 		if (got_ref_is_symbolic(head_ref)) {
8273 			error = got_ref_resolve_symbolic(&ref, repo, head_ref);
8274 			got_ref_close(head_ref);
8275 			if (error)
8276 				goto done;
8277 		} else
8278 			ref = head_ref;
8279 		error = got_pathlist_append(&branches, got_ref_get_name(ref),
8280 		    NULL);
8281 		if (error)
8282 			goto done;
8283 		nbranches++;
8284 	}
8285 
8286 	if (verbosity >= 0)
8287 		printf("Connecting to \"%s\" %s%s%s\n", remote->name, host,
8288 		    port ? ":" : "", port ? port : "");
8289 
8290 	error = got_send_connect(&sendpid, &sendfd, proto, host, port,
8291 	    server_path, verbosity);
8292 	if (error)
8293 		goto done;
8294 
8295 	memset(&spa, 0, sizeof(spa));
8296 	spa.last_scaled_packsize[0] = '\0';
8297 	spa.last_p_deltify = -1;
8298 	spa.last_p_written = -1;
8299 	spa.verbosity = verbosity;
8300 	spa.delete_branches = &delete_branches;
8301 	error = got_send_pack(remote_name, &branches, &tags, &delete_branches,
8302 	    verbosity, overwrite_refs, sendfd, repo, send_progress, &spa,
8303 	    check_cancelled, NULL);
8304 	if (spa.printed_something)
8305 		putchar('\n');
8306 	if (error)
8307 		goto done;
8308 	if (!spa.sent_something && verbosity >= 0)
8309 		printf("Already up-to-date\n");
8310 done:
8311 	if (sendpid > 0) {
8312 		if (kill(sendpid, SIGTERM) == -1)
8313 			error = got_error_from_errno("kill");
8314 		if (waitpid(sendpid, &sendstatus, 0) == -1 && error == NULL)
8315 			error = got_error_from_errno("waitpid");
8316 	}
8317 	if (sendfd != -1 && close(sendfd) == -1 && error == NULL)
8318 		error = got_error_from_errno("close");
8319 	if (repo) {
8320 		const struct got_error *close_err = got_repo_close(repo);
8321 		if (error == NULL)
8322 			error = close_err;
8323 	}
8324 	if (worktree)
8325 		got_worktree_close(worktree);
8326 	if (ref)
8327 		got_ref_close(ref);
8328 	got_pathlist_free(&branches);
8329 	got_pathlist_free(&tags);
8330 	got_ref_list_free(&all_branches);
8331 	got_ref_list_free(&all_tags);
8332 	got_pathlist_free(&delete_args);
8333 	TAILQ_FOREACH(pe, &delete_branches, entry)
8334 		free((char *)pe->path);
8335 	got_pathlist_free(&delete_branches);
8336 	free(cwd);
8337 	free(repo_path);
8338 	free(proto);
8339 	free(host);
8340 	free(port);
8341 	free(server_path);
8342 	free(repo_name);
8343 	return error;
8344 }
8345 
8346 __dead static void
8347 usage_cherrypick(void)
8348 {
8349 	fprintf(stderr, "usage: %s cherrypick commit-id\n", getprogname());
8350 	exit(1);
8351 }
8352 
8353 static const struct got_error *
8354 cmd_cherrypick(int argc, char *argv[])
8355 {
8356 	const struct got_error *error = NULL;
8357 	struct got_worktree *worktree = NULL;
8358 	struct got_repository *repo = NULL;
8359 	char *cwd = NULL, *commit_id_str = NULL;
8360 	struct got_object_id *commit_id = NULL;
8361 	struct got_commit_object *commit = NULL;
8362 	struct got_object_qid *pid;
8363 	int ch;
8364 	struct got_update_progress_arg upa;
8365 
8366 	while ((ch = getopt(argc, argv, "")) != -1) {
8367 		switch (ch) {
8368 		default:
8369 			usage_cherrypick();
8370 			/* NOTREACHED */
8371 		}
8372 	}
8373 
8374 	argc -= optind;
8375 	argv += optind;
8376 
8377 #ifndef PROFILE
8378 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
8379 	    "unveil", NULL) == -1)
8380 		err(1, "pledge");
8381 #endif
8382 	if (argc != 1)
8383 		usage_cherrypick();
8384 
8385 	cwd = getcwd(NULL, 0);
8386 	if (cwd == NULL) {
8387 		error = got_error_from_errno("getcwd");
8388 		goto done;
8389 	}
8390 	error = got_worktree_open(&worktree, cwd);
8391 	if (error) {
8392 		if (error->code == GOT_ERR_NOT_WORKTREE)
8393 			error = wrap_not_worktree_error(error, "cherrypick",
8394 			    cwd);
8395 		goto done;
8396 	}
8397 
8398 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
8399 	    NULL);
8400 	if (error != NULL)
8401 		goto done;
8402 
8403 	error = apply_unveil(got_repo_get_path(repo), 0,
8404 	    got_worktree_get_root_path(worktree));
8405 	if (error)
8406 		goto done;
8407 
8408 	error = got_repo_match_object_id(&commit_id, NULL, argv[0],
8409 	    GOT_OBJ_TYPE_COMMIT, NULL, repo);
8410 	if (error)
8411 		goto done;
8412 	error = got_object_id_str(&commit_id_str, commit_id);
8413 	if (error)
8414 		goto done;
8415 
8416 	error = got_object_open_as_commit(&commit, repo, commit_id);
8417 	if (error)
8418 		goto done;
8419 	pid = STAILQ_FIRST(got_object_commit_get_parent_ids(commit));
8420 	memset(&upa, 0, sizeof(upa));
8421 	error = got_worktree_merge_files(worktree, pid ? pid->id : NULL,
8422 	    commit_id, repo, update_progress, &upa, check_cancelled,
8423 	    NULL);
8424 	if (error != NULL)
8425 		goto done;
8426 
8427 	if (upa.did_something)
8428 		printf("Merged commit %s\n", commit_id_str);
8429 	print_merge_progress_stats(&upa);
8430 done:
8431 	if (commit)
8432 		got_object_commit_close(commit);
8433 	free(commit_id_str);
8434 	if (worktree)
8435 		got_worktree_close(worktree);
8436 	if (repo) {
8437 		const struct got_error *close_err = got_repo_close(repo);
8438 		if (error == NULL)
8439 			error = close_err;
8440 	}
8441 	return error;
8442 }
8443 
8444 __dead static void
8445 usage_backout(void)
8446 {
8447 	fprintf(stderr, "usage: %s backout commit-id\n", getprogname());
8448 	exit(1);
8449 }
8450 
8451 static const struct got_error *
8452 cmd_backout(int argc, char *argv[])
8453 {
8454 	const struct got_error *error = NULL;
8455 	struct got_worktree *worktree = NULL;
8456 	struct got_repository *repo = NULL;
8457 	char *cwd = NULL, *commit_id_str = NULL;
8458 	struct got_object_id *commit_id = NULL;
8459 	struct got_commit_object *commit = NULL;
8460 	struct got_object_qid *pid;
8461 	int ch;
8462 	struct got_update_progress_arg upa;
8463 
8464 	while ((ch = getopt(argc, argv, "")) != -1) {
8465 		switch (ch) {
8466 		default:
8467 			usage_backout();
8468 			/* NOTREACHED */
8469 		}
8470 	}
8471 
8472 	argc -= optind;
8473 	argv += optind;
8474 
8475 #ifndef PROFILE
8476 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
8477 	    "unveil", NULL) == -1)
8478 		err(1, "pledge");
8479 #endif
8480 	if (argc != 1)
8481 		usage_backout();
8482 
8483 	cwd = getcwd(NULL, 0);
8484 	if (cwd == NULL) {
8485 		error = got_error_from_errno("getcwd");
8486 		goto done;
8487 	}
8488 	error = got_worktree_open(&worktree, cwd);
8489 	if (error) {
8490 		if (error->code == GOT_ERR_NOT_WORKTREE)
8491 			error = wrap_not_worktree_error(error, "backout", cwd);
8492 		goto done;
8493 	}
8494 
8495 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
8496 	    NULL);
8497 	if (error != NULL)
8498 		goto done;
8499 
8500 	error = apply_unveil(got_repo_get_path(repo), 0,
8501 	    got_worktree_get_root_path(worktree));
8502 	if (error)
8503 		goto done;
8504 
8505 	error = got_repo_match_object_id(&commit_id, NULL, argv[0],
8506 	    GOT_OBJ_TYPE_COMMIT, NULL, repo);
8507 	if (error)
8508 		goto done;
8509 	error = got_object_id_str(&commit_id_str, commit_id);
8510 	if (error)
8511 		goto done;
8512 
8513 	error = got_object_open_as_commit(&commit, repo, commit_id);
8514 	if (error)
8515 		goto done;
8516 	pid = STAILQ_FIRST(got_object_commit_get_parent_ids(commit));
8517 	if (pid == NULL) {
8518 		error = got_error(GOT_ERR_ROOT_COMMIT);
8519 		goto done;
8520 	}
8521 
8522 	memset(&upa, 0, sizeof(upa));
8523 	error = got_worktree_merge_files(worktree, commit_id, pid->id,
8524 	    repo, update_progress, &upa, check_cancelled, NULL);
8525 	if (error != NULL)
8526 		goto done;
8527 
8528 	if (upa.did_something)
8529 		printf("Backed out commit %s\n", commit_id_str);
8530 	print_merge_progress_stats(&upa);
8531 done:
8532 	if (commit)
8533 		got_object_commit_close(commit);
8534 	free(commit_id_str);
8535 	if (worktree)
8536 		got_worktree_close(worktree);
8537 	if (repo) {
8538 		const struct got_error *close_err = got_repo_close(repo);
8539 		if (error == NULL)
8540 			error = close_err;
8541 	}
8542 	return error;
8543 }
8544 
8545 __dead static void
8546 usage_rebase(void)
8547 {
8548 	fprintf(stderr, "usage: %s rebase [-a] [-c] [-l] [-X] [branch]\n",
8549 	    getprogname());
8550 	exit(1);
8551 }
8552 
8553 void
8554 trim_logmsg(char *logmsg, int limit)
8555 {
8556 	char *nl;
8557 	size_t len;
8558 
8559 	len = strlen(logmsg);
8560 	if (len > limit)
8561 		len = limit;
8562 	logmsg[len] = '\0';
8563 	nl = strchr(logmsg, '\n');
8564 	if (nl)
8565 		*nl = '\0';
8566 }
8567 
8568 static const struct got_error *
8569 get_short_logmsg(char **logmsg, int limit, struct got_commit_object *commit)
8570 {
8571 	const struct got_error *err;
8572 	char *logmsg0 = NULL;
8573 	const char *s;
8574 
8575 	err = got_object_commit_get_logmsg(&logmsg0, commit);
8576 	if (err)
8577 		return err;
8578 
8579 	s = logmsg0;
8580 	while (isspace((unsigned char)s[0]))
8581 		s++;
8582 
8583 	*logmsg = strdup(s);
8584 	if (*logmsg == NULL) {
8585 		err = got_error_from_errno("strdup");
8586 		goto done;
8587 	}
8588 
8589 	trim_logmsg(*logmsg, limit);
8590 done:
8591 	free(logmsg0);
8592 	return err;
8593 }
8594 
8595 static const struct got_error *
8596 show_rebase_merge_conflict(struct got_object_id *id,
8597     struct got_repository *repo)
8598 {
8599 	const struct got_error *err;
8600 	struct got_commit_object *commit = NULL;
8601 	char *id_str = NULL, *logmsg = NULL;
8602 
8603 	err = got_object_open_as_commit(&commit, repo, id);
8604 	if (err)
8605 		return err;
8606 
8607 	err = got_object_id_str(&id_str, id);
8608 	if (err)
8609 		goto done;
8610 
8611 	id_str[12] = '\0';
8612 
8613 	err = get_short_logmsg(&logmsg, 42, commit);
8614 	if (err)
8615 		goto done;
8616 
8617 	printf("%s -> merge conflict: %s\n", id_str, logmsg);
8618 done:
8619 	free(id_str);
8620 	got_object_commit_close(commit);
8621 	free(logmsg);
8622 	return err;
8623 }
8624 
8625 static const struct got_error *
8626 show_rebase_progress(struct got_commit_object *commit,
8627     struct got_object_id *old_id, struct got_object_id *new_id)
8628 {
8629 	const struct got_error *err;
8630 	char *old_id_str = NULL, *new_id_str = NULL, *logmsg = NULL;
8631 
8632 	err = got_object_id_str(&old_id_str, old_id);
8633 	if (err)
8634 		goto done;
8635 
8636 	if (new_id) {
8637 		err = got_object_id_str(&new_id_str, new_id);
8638 		if (err)
8639 			goto done;
8640 	}
8641 
8642 	old_id_str[12] = '\0';
8643 	if (new_id_str)
8644 		new_id_str[12] = '\0';
8645 
8646 	err = get_short_logmsg(&logmsg, 42, commit);
8647 	if (err)
8648 		goto done;
8649 
8650 	printf("%s -> %s: %s\n", old_id_str,
8651 	    new_id_str ? new_id_str : "no-op change", logmsg);
8652 done:
8653 	free(old_id_str);
8654 	free(new_id_str);
8655 	free(logmsg);
8656 	return err;
8657 }
8658 
8659 static const struct got_error *
8660 rebase_complete(struct got_worktree *worktree, struct got_fileindex *fileindex,
8661     struct got_reference *branch, struct got_reference *new_base_branch,
8662     struct got_reference *tmp_branch, struct got_repository *repo,
8663     int create_backup)
8664 {
8665 	printf("Switching work tree to %s\n", got_ref_get_name(branch));
8666 	return got_worktree_rebase_complete(worktree, fileindex,
8667 	    new_base_branch, tmp_branch, branch, repo, create_backup);
8668 }
8669 
8670 static const struct got_error *
8671 rebase_commit(struct got_pathlist_head *merged_paths,
8672     struct got_worktree *worktree, struct got_fileindex *fileindex,
8673     struct got_reference *tmp_branch,
8674     struct got_object_id *commit_id, struct got_repository *repo)
8675 {
8676 	const struct got_error *error;
8677 	struct got_commit_object *commit;
8678 	struct got_object_id *new_commit_id;
8679 
8680 	error = got_object_open_as_commit(&commit, repo, commit_id);
8681 	if (error)
8682 		return error;
8683 
8684 	error = got_worktree_rebase_commit(&new_commit_id, merged_paths,
8685 	    worktree, fileindex, tmp_branch, commit, commit_id, repo);
8686 	if (error) {
8687 		if (error->code != GOT_ERR_COMMIT_NO_CHANGES)
8688 			goto done;
8689 		error = show_rebase_progress(commit, commit_id, NULL);
8690 	} else {
8691 		error = show_rebase_progress(commit, commit_id, new_commit_id);
8692 		free(new_commit_id);
8693 	}
8694 done:
8695 	got_object_commit_close(commit);
8696 	return error;
8697 }
8698 
8699 struct check_path_prefix_arg {
8700 	const char *path_prefix;
8701 	size_t len;
8702 	int errcode;
8703 };
8704 
8705 static const struct got_error *
8706 check_path_prefix_in_diff(void *arg, struct got_blob_object *blob1,
8707     struct got_blob_object *blob2, struct got_object_id *id1,
8708     struct got_object_id *id2, const char *path1, const char *path2,
8709     mode_t mode1, mode_t mode2, struct got_repository *repo)
8710 {
8711 	struct check_path_prefix_arg *a = arg;
8712 
8713 	if ((path1 && !got_path_is_child(path1, a->path_prefix, a->len)) ||
8714 	    (path2 && !got_path_is_child(path2, a->path_prefix, a->len)))
8715 		return got_error(a->errcode);
8716 
8717 	return NULL;
8718 }
8719 
8720 static const struct got_error *
8721 check_path_prefix(struct got_object_id *parent_id,
8722     struct got_object_id *commit_id, const char *path_prefix,
8723     int errcode, struct got_repository *repo)
8724 {
8725 	const struct got_error *err;
8726 	struct got_tree_object *tree1 = NULL, *tree2 = NULL;
8727 	struct got_commit_object *commit = NULL, *parent_commit = NULL;
8728 	struct check_path_prefix_arg cpp_arg;
8729 
8730 	if (got_path_is_root_dir(path_prefix))
8731 		return NULL;
8732 
8733 	err = got_object_open_as_commit(&commit, repo, commit_id);
8734 	if (err)
8735 		goto done;
8736 
8737 	err = got_object_open_as_commit(&parent_commit, repo, parent_id);
8738 	if (err)
8739 		goto done;
8740 
8741 	err = got_object_open_as_tree(&tree1, repo,
8742 	    got_object_commit_get_tree_id(parent_commit));
8743 	if (err)
8744 		goto done;
8745 
8746 	err = got_object_open_as_tree(&tree2, repo,
8747 	    got_object_commit_get_tree_id(commit));
8748 	if (err)
8749 		goto done;
8750 
8751 	cpp_arg.path_prefix = path_prefix;
8752 	while (cpp_arg.path_prefix[0] == '/')
8753 		cpp_arg.path_prefix++;
8754 	cpp_arg.len = strlen(cpp_arg.path_prefix);
8755 	cpp_arg.errcode = errcode;
8756 	err = got_diff_tree(tree1, tree2, "", "", repo,
8757 	    check_path_prefix_in_diff, &cpp_arg, 0);
8758 done:
8759 	if (tree1)
8760 		got_object_tree_close(tree1);
8761 	if (tree2)
8762 		got_object_tree_close(tree2);
8763 	if (commit)
8764 		got_object_commit_close(commit);
8765 	if (parent_commit)
8766 		got_object_commit_close(parent_commit);
8767 	return err;
8768 }
8769 
8770 static const struct got_error *
8771 collect_commits(struct got_object_id_queue *commits,
8772     struct got_object_id *initial_commit_id,
8773     struct got_object_id *iter_start_id, struct got_object_id *iter_stop_id,
8774     const char *path_prefix, int path_prefix_errcode,
8775     struct got_repository *repo)
8776 {
8777 	const struct got_error *err = NULL;
8778 	struct got_commit_graph *graph = NULL;
8779 	struct got_object_id *parent_id = NULL;
8780 	struct got_object_qid *qid;
8781         struct got_object_id *commit_id = initial_commit_id;
8782 
8783 	err = got_commit_graph_open(&graph, "/", 1);
8784 	if (err)
8785 		return err;
8786 
8787 	err = got_commit_graph_iter_start(graph, iter_start_id, repo,
8788 	    check_cancelled, NULL);
8789 	if (err)
8790 		goto done;
8791 	while (got_object_id_cmp(commit_id, iter_stop_id) != 0) {
8792 		err = got_commit_graph_iter_next(&parent_id, graph, repo,
8793 		    check_cancelled, NULL);
8794 		if (err) {
8795 			if (err->code == GOT_ERR_ITER_COMPLETED) {
8796 				err = got_error_msg(GOT_ERR_ANCESTRY,
8797 				    "ran out of commits to rebase before "
8798 				    "youngest common ancestor commit has "
8799 				    "been reached?!?");
8800 			}
8801 			goto done;
8802 		} else {
8803 			err = check_path_prefix(parent_id, commit_id,
8804 			    path_prefix, path_prefix_errcode, repo);
8805 			if (err)
8806 				goto done;
8807 
8808 			err = got_object_qid_alloc(&qid, commit_id);
8809 			if (err)
8810 				goto done;
8811 			STAILQ_INSERT_HEAD(commits, qid, entry);
8812 			commit_id = parent_id;
8813 		}
8814 	}
8815 done:
8816 	got_commit_graph_close(graph);
8817 	return err;
8818 }
8819 
8820 static const struct got_error *
8821 get_commit_brief_str(char **brief_str, struct got_commit_object *commit)
8822 {
8823 	const struct got_error *err = NULL;
8824 	time_t committer_time;
8825 	struct tm tm;
8826 	char datebuf[11]; /* YYYY-MM-DD + NUL */
8827 	char *author0 = NULL, *author, *smallerthan;
8828 	char *logmsg0 = NULL, *logmsg, *newline;
8829 
8830 	committer_time = got_object_commit_get_committer_time(commit);
8831 	if (gmtime_r(&committer_time, &tm) == NULL)
8832 		return got_error_from_errno("gmtime_r");
8833 	if (strftime(datebuf, sizeof(datebuf), "%G-%m-%d", &tm) == 0)
8834 		return got_error(GOT_ERR_NO_SPACE);
8835 
8836 	author0 = strdup(got_object_commit_get_author(commit));
8837 	if (author0 == NULL)
8838 		return got_error_from_errno("strdup");
8839 	author = author0;
8840 	smallerthan = strchr(author, '<');
8841 	if (smallerthan && smallerthan[1] != '\0')
8842 		author = smallerthan + 1;
8843 	author[strcspn(author, "@>")] = '\0';
8844 
8845 	err = got_object_commit_get_logmsg(&logmsg0, commit);
8846 	if (err)
8847 		goto done;
8848 	logmsg = logmsg0;
8849 	while (*logmsg == '\n')
8850 		logmsg++;
8851 	newline = strchr(logmsg, '\n');
8852 	if (newline)
8853 		*newline = '\0';
8854 
8855 	if (asprintf(brief_str, "%s %s  %s",
8856 	    datebuf, author, logmsg) == -1)
8857 		err = got_error_from_errno("asprintf");
8858 done:
8859 	free(author0);
8860 	free(logmsg0);
8861 	return err;
8862 }
8863 
8864 static const struct got_error *
8865 delete_backup_ref(struct got_reference *ref, struct got_object_id *id,
8866     struct got_repository *repo)
8867 {
8868 	const struct got_error *err;
8869 	char *id_str;
8870 
8871 	err = got_object_id_str(&id_str, id);
8872 	if (err)
8873 		return err;
8874 
8875 	err = got_ref_delete(ref, repo);
8876 	if (err)
8877 		goto done;
8878 
8879 	printf("Deleted %s: %s\n", got_ref_get_name(ref), id_str);
8880 done:
8881 	free(id_str);
8882 	return err;
8883 }
8884 
8885 static const struct got_error *
8886 print_backup_ref(const char *branch_name, const char *new_id_str,
8887     struct got_object_id *old_commit_id, struct got_commit_object *old_commit,
8888     struct got_reflist_object_id_map *refs_idmap,
8889     struct got_repository *repo)
8890 {
8891 	const struct got_error *err = NULL;
8892 	struct got_reflist_head *refs;
8893 	char *refs_str = NULL;
8894 	struct got_object_id *new_commit_id = NULL;
8895 	struct got_commit_object *new_commit = NULL;
8896 	char *new_commit_brief_str = NULL;
8897 	struct got_object_id *yca_id = NULL;
8898 	struct got_commit_object *yca_commit = NULL;
8899 	char *yca_id_str = NULL, *yca_brief_str = NULL;
8900 	char *custom_refs_str;
8901 
8902 	if (asprintf(&custom_refs_str, "formerly %s", branch_name) == -1)
8903 		return got_error_from_errno("asprintf");
8904 
8905 	err = print_commit(old_commit, old_commit_id, repo, NULL, NULL,
8906 	    0, 0, refs_idmap, custom_refs_str);
8907 	if (err)
8908 		goto done;
8909 
8910 	err = got_object_resolve_id_str(&new_commit_id, repo, new_id_str);
8911 	if (err)
8912 		goto done;
8913 
8914 	refs = got_reflist_object_id_map_lookup(refs_idmap, new_commit_id);
8915 	if (refs) {
8916 		err = build_refs_str(&refs_str, refs, new_commit_id, repo);
8917 		if (err)
8918 			goto done;
8919 	}
8920 
8921 	err = got_object_open_as_commit(&new_commit, repo, new_commit_id);
8922 	if (err)
8923 		goto done;
8924 
8925 	err = get_commit_brief_str(&new_commit_brief_str, new_commit);
8926 	if (err)
8927 		goto done;
8928 
8929 	err = got_commit_graph_find_youngest_common_ancestor(&yca_id,
8930 	    old_commit_id, new_commit_id, 1, repo, check_cancelled, NULL);
8931 	if (err)
8932 		goto done;
8933 
8934 	printf("has become commit %s%s%s%s\n %s\n", new_id_str,
8935 	    refs_str ? " (" : "", refs_str ? refs_str : "",
8936 	    refs_str ? ")" : "", new_commit_brief_str);
8937 	if (yca_id && got_object_id_cmp(yca_id, new_commit_id) != 0 &&
8938 	    got_object_id_cmp(yca_id, old_commit_id) != 0) {
8939 		free(refs_str);
8940 		refs_str = NULL;
8941 
8942 		err = got_object_open_as_commit(&yca_commit, repo, yca_id);
8943 		if (err)
8944 			goto done;
8945 
8946 		err = get_commit_brief_str(&yca_brief_str, yca_commit);
8947 		if (err)
8948 			goto done;
8949 
8950 		err = got_object_id_str(&yca_id_str, yca_id);
8951 		if (err)
8952 			goto done;
8953 
8954 		refs = got_reflist_object_id_map_lookup(refs_idmap, yca_id);
8955 		if (refs) {
8956 			err = build_refs_str(&refs_str, refs, yca_id, repo);
8957 			if (err)
8958 				goto done;
8959 		}
8960 		printf("history forked at %s%s%s%s\n %s\n",
8961 		    yca_id_str,
8962 		    refs_str ? " (" : "", refs_str ? refs_str : "",
8963 		    refs_str ? ")" : "", yca_brief_str);
8964 	}
8965 done:
8966 	free(custom_refs_str);
8967 	free(new_commit_id);
8968 	free(refs_str);
8969 	free(yca_id);
8970 	free(yca_id_str);
8971 	free(yca_brief_str);
8972 	if (new_commit)
8973 		got_object_commit_close(new_commit);
8974 	if (yca_commit)
8975 		got_object_commit_close(yca_commit);
8976 
8977 	return NULL;
8978 }
8979 
8980 static const struct got_error *
8981 process_backup_refs(const char *backup_ref_prefix,
8982     const char *wanted_branch_name,
8983     int delete, struct got_repository *repo)
8984 {
8985 	const struct got_error *err;
8986 	struct got_reflist_head refs, backup_refs;
8987 	struct got_reflist_entry *re;
8988 	const size_t backup_ref_prefix_len = strlen(backup_ref_prefix);
8989 	struct got_object_id *old_commit_id = NULL;
8990 	char *branch_name = NULL;
8991 	struct got_commit_object *old_commit = NULL;
8992 	struct got_reflist_object_id_map *refs_idmap = NULL;
8993 	int wanted_branch_found = 0;
8994 
8995 	TAILQ_INIT(&refs);
8996 	TAILQ_INIT(&backup_refs);
8997 
8998 	err = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name, NULL);
8999 	if (err)
9000 		return err;
9001 
9002 	err = got_reflist_object_id_map_create(&refs_idmap, &refs, repo);
9003 	if (err)
9004 		goto done;
9005 
9006 	if (wanted_branch_name) {
9007 		if (strncmp(wanted_branch_name, "refs/heads/", 11) == 0)
9008 			wanted_branch_name += 11;
9009 	}
9010 
9011 	err = got_ref_list(&backup_refs, repo, backup_ref_prefix,
9012 	    got_ref_cmp_by_commit_timestamp_descending, repo);
9013 	if (err)
9014 		goto done;
9015 
9016 	TAILQ_FOREACH(re, &backup_refs, entry) {
9017 		const char *refname = got_ref_get_name(re->ref);
9018 		char *slash;
9019 
9020 		err = check_cancelled(NULL);
9021 		if (err)
9022 			break;
9023 
9024 		err = got_ref_resolve(&old_commit_id, repo, re->ref);
9025 		if (err)
9026 			break;
9027 
9028 		err = got_object_open_as_commit(&old_commit, repo,
9029 		    old_commit_id);
9030 		if (err)
9031 			break;
9032 
9033 		if (strncmp(backup_ref_prefix, refname,
9034 		    backup_ref_prefix_len) == 0)
9035 			refname += backup_ref_prefix_len;
9036 
9037 		while (refname[0] == '/')
9038 			refname++;
9039 
9040 		branch_name = strdup(refname);
9041 		if (branch_name == NULL) {
9042 			err = got_error_from_errno("strdup");
9043 			break;
9044 		}
9045 		slash = strrchr(branch_name, '/');
9046 		if (slash) {
9047 			*slash = '\0';
9048 			refname += strlen(branch_name) + 1;
9049 		}
9050 
9051 		if (wanted_branch_name == NULL ||
9052 		    strcmp(wanted_branch_name, branch_name) == 0) {
9053 			wanted_branch_found = 1;
9054 			if (delete) {
9055 				err = delete_backup_ref(re->ref,
9056 				    old_commit_id, repo);
9057 			} else {
9058 				err = print_backup_ref(branch_name, refname,
9059 				    old_commit_id, old_commit, refs_idmap,
9060 				    repo);
9061 			}
9062 			if (err)
9063 				break;
9064 		}
9065 
9066 		free(old_commit_id);
9067 		old_commit_id = NULL;
9068 		free(branch_name);
9069 		branch_name = NULL;
9070 		got_object_commit_close(old_commit);
9071 		old_commit = NULL;
9072 	}
9073 
9074 	if (wanted_branch_name && !wanted_branch_found) {
9075 		err = got_error_fmt(GOT_ERR_NOT_REF,
9076 		    "%s/%s/", backup_ref_prefix, wanted_branch_name);
9077 	}
9078 done:
9079 	if (refs_idmap)
9080 		got_reflist_object_id_map_free(refs_idmap);
9081 	got_ref_list_free(&refs);
9082 	got_ref_list_free(&backup_refs);
9083 	free(old_commit_id);
9084 	free(branch_name);
9085 	if (old_commit)
9086 		got_object_commit_close(old_commit);
9087 	return err;
9088 }
9089 
9090 static const struct got_error *
9091 abort_progress(void *arg, unsigned char status, const char *path)
9092 {
9093 	/*
9094 	 * Unversioned files should not clutter progress output when
9095 	 * an operation is aborted.
9096 	 */
9097 	if (status == GOT_STATUS_UNVERSIONED)
9098 		return NULL;
9099 
9100 	return update_progress(arg, status, path);
9101 }
9102 
9103 static const struct got_error *
9104 cmd_rebase(int argc, char *argv[])
9105 {
9106 	const struct got_error *error = NULL;
9107 	struct got_worktree *worktree = NULL;
9108 	struct got_repository *repo = NULL;
9109 	struct got_fileindex *fileindex = NULL;
9110 	char *cwd = NULL;
9111 	struct got_reference *branch = NULL;
9112 	struct got_reference *new_base_branch = NULL, *tmp_branch = NULL;
9113 	struct got_object_id *commit_id = NULL, *parent_id = NULL;
9114 	struct got_object_id *resume_commit_id = NULL;
9115 	struct got_object_id *branch_head_commit_id = NULL, *yca_id = NULL;
9116 	struct got_commit_object *commit = NULL;
9117 	int ch, rebase_in_progress = 0, abort_rebase = 0, continue_rebase = 0;
9118 	int histedit_in_progress = 0, merge_in_progress = 0;
9119 	int create_backup = 1, list_backups = 0, delete_backups = 0;
9120 	struct got_object_id_queue commits;
9121 	struct got_pathlist_head merged_paths;
9122 	const struct got_object_id_queue *parent_ids;
9123 	struct got_object_qid *qid, *pid;
9124 	struct got_update_progress_arg upa;
9125 
9126 	STAILQ_INIT(&commits);
9127 	TAILQ_INIT(&merged_paths);
9128 	memset(&upa, 0, sizeof(upa));
9129 
9130 	while ((ch = getopt(argc, argv, "aclX")) != -1) {
9131 		switch (ch) {
9132 		case 'a':
9133 			abort_rebase = 1;
9134 			break;
9135 		case 'c':
9136 			continue_rebase = 1;
9137 			break;
9138 		case 'l':
9139 			list_backups = 1;
9140 			break;
9141 		case 'X':
9142 			delete_backups = 1;
9143 			break;
9144 		default:
9145 			usage_rebase();
9146 			/* NOTREACHED */
9147 		}
9148 	}
9149 
9150 	argc -= optind;
9151 	argv += optind;
9152 
9153 #ifndef PROFILE
9154 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
9155 	    "unveil", NULL) == -1)
9156 		err(1, "pledge");
9157 #endif
9158 	if (list_backups) {
9159 		if (abort_rebase)
9160 			option_conflict('l', 'a');
9161 		if (continue_rebase)
9162 			option_conflict('l', 'c');
9163 		if (delete_backups)
9164 			option_conflict('l', 'X');
9165 		if (argc != 0 && argc != 1)
9166 			usage_rebase();
9167 	} else if (delete_backups) {
9168 		if (abort_rebase)
9169 			option_conflict('X', 'a');
9170 		if (continue_rebase)
9171 			option_conflict('X', 'c');
9172 		if (list_backups)
9173 			option_conflict('l', 'X');
9174 		if (argc != 0 && argc != 1)
9175 			usage_rebase();
9176 	} else {
9177 		if (abort_rebase && continue_rebase)
9178 			usage_rebase();
9179 		else if (abort_rebase || continue_rebase) {
9180 			if (argc != 0)
9181 				usage_rebase();
9182 		} else if (argc != 1)
9183 			usage_rebase();
9184 	}
9185 
9186 	cwd = getcwd(NULL, 0);
9187 	if (cwd == NULL) {
9188 		error = got_error_from_errno("getcwd");
9189 		goto done;
9190 	}
9191 	error = got_worktree_open(&worktree, cwd);
9192 	if (error) {
9193 		if (list_backups || delete_backups) {
9194 			if (error->code != GOT_ERR_NOT_WORKTREE)
9195 				goto done;
9196 		} else {
9197 			if (error->code == GOT_ERR_NOT_WORKTREE)
9198 				error = wrap_not_worktree_error(error,
9199 				    "rebase", cwd);
9200 			goto done;
9201 		}
9202 	}
9203 
9204 	error = got_repo_open(&repo,
9205 	    worktree ? got_worktree_get_repo_path(worktree) : cwd, NULL);
9206 	if (error != NULL)
9207 		goto done;
9208 
9209 	error = apply_unveil(got_repo_get_path(repo), 0,
9210 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
9211 	if (error)
9212 		goto done;
9213 
9214 	if (list_backups || delete_backups) {
9215 		error = process_backup_refs(
9216 		    GOT_WORKTREE_REBASE_BACKUP_REF_PREFIX,
9217 		    argc == 1 ? argv[0] : NULL, delete_backups, repo);
9218 		goto done; /* nothing else to do */
9219 	}
9220 
9221 	error = got_worktree_histedit_in_progress(&histedit_in_progress,
9222 	    worktree);
9223 	if (error)
9224 		goto done;
9225 	if (histedit_in_progress) {
9226 		error = got_error(GOT_ERR_HISTEDIT_BUSY);
9227 		goto done;
9228 	}
9229 
9230 	error = got_worktree_merge_in_progress(&merge_in_progress,
9231 	    worktree, repo);
9232 	if (error)
9233 		goto done;
9234 	if (merge_in_progress) {
9235 		error = got_error(GOT_ERR_MERGE_BUSY);
9236 		goto done;
9237 	}
9238 
9239 	error = got_worktree_rebase_in_progress(&rebase_in_progress, worktree);
9240 	if (error)
9241 		goto done;
9242 
9243 	if (abort_rebase) {
9244 		if (!rebase_in_progress) {
9245 			error = got_error(GOT_ERR_NOT_REBASING);
9246 			goto done;
9247 		}
9248 		error = got_worktree_rebase_continue(&resume_commit_id,
9249 		    &new_base_branch, &tmp_branch, &branch, &fileindex,
9250 		    worktree, repo);
9251 		if (error)
9252 			goto done;
9253 		printf("Switching work tree to %s\n",
9254 		    got_ref_get_symref_target(new_base_branch));
9255 		error = got_worktree_rebase_abort(worktree, fileindex, repo,
9256 		    new_base_branch, abort_progress, &upa);
9257 		if (error)
9258 			goto done;
9259 		printf("Rebase of %s aborted\n", got_ref_get_name(branch));
9260 		print_merge_progress_stats(&upa);
9261 		goto done; /* nothing else to do */
9262 	}
9263 
9264 	if (continue_rebase) {
9265 		if (!rebase_in_progress) {
9266 			error = got_error(GOT_ERR_NOT_REBASING);
9267 			goto done;
9268 		}
9269 		error = got_worktree_rebase_continue(&resume_commit_id,
9270 		    &new_base_branch, &tmp_branch, &branch, &fileindex,
9271 		    worktree, repo);
9272 		if (error)
9273 			goto done;
9274 
9275 		error = rebase_commit(NULL, worktree, fileindex, tmp_branch,
9276 		    resume_commit_id, repo);
9277 		if (error)
9278 			goto done;
9279 
9280 		yca_id = got_object_id_dup(resume_commit_id);
9281 		if (yca_id == NULL) {
9282 			error = got_error_from_errno("got_object_id_dup");
9283 			goto done;
9284 		}
9285 	} else {
9286 		error = got_ref_open(&branch, repo, argv[0], 0);
9287 		if (error != NULL)
9288 			goto done;
9289 	}
9290 
9291 	error = got_ref_resolve(&branch_head_commit_id, repo, branch);
9292 	if (error)
9293 		goto done;
9294 
9295 	if (!continue_rebase) {
9296 		struct got_object_id *base_commit_id;
9297 
9298 		base_commit_id = got_worktree_get_base_commit_id(worktree);
9299 		error = got_commit_graph_find_youngest_common_ancestor(&yca_id,
9300 		    base_commit_id, branch_head_commit_id, 1, repo,
9301 		    check_cancelled, NULL);
9302 		if (error)
9303 			goto done;
9304 		if (yca_id == NULL) {
9305 			error = got_error_msg(GOT_ERR_ANCESTRY,
9306 			    "specified branch shares no common ancestry "
9307 			    "with work tree's branch");
9308 			goto done;
9309 		}
9310 
9311 		error = check_same_branch(base_commit_id, branch, yca_id, repo);
9312 		if (error) {
9313 			if (error->code != GOT_ERR_ANCESTRY)
9314 				goto done;
9315 			error = NULL;
9316 		} else {
9317 			struct got_pathlist_head paths;
9318 			printf("%s is already based on %s\n",
9319 			    got_ref_get_name(branch),
9320 			    got_worktree_get_head_ref_name(worktree));
9321 			error = switch_head_ref(branch, branch_head_commit_id,
9322 			    worktree, repo);
9323 			if (error)
9324 				goto done;
9325 			error = got_worktree_set_base_commit_id(worktree, repo,
9326 			    branch_head_commit_id);
9327 			if (error)
9328 				goto done;
9329 			TAILQ_INIT(&paths);
9330 			error = got_pathlist_append(&paths, "", NULL);
9331 			if (error)
9332 				goto done;
9333 			error = got_worktree_checkout_files(worktree,
9334 			    &paths, repo, update_progress, &upa,
9335 			    check_cancelled, NULL);
9336 			got_pathlist_free(&paths);
9337 			if (error)
9338 				goto done;
9339 			if (upa.did_something) {
9340 				char *id_str;
9341 				error = got_object_id_str(&id_str,
9342 				    branch_head_commit_id);
9343 				if (error)
9344 					goto done;
9345 				printf("Updated to %s: %s\n",
9346 				    got_worktree_get_head_ref_name(worktree),
9347 				    id_str);
9348 				free(id_str);
9349 			} else
9350 				printf("Already up-to-date\n");
9351 			print_update_progress_stats(&upa);
9352 			goto done;
9353 		}
9354 		error = got_worktree_rebase_prepare(&new_base_branch,
9355 		    &tmp_branch, &fileindex, worktree, branch, repo);
9356 		if (error)
9357 			goto done;
9358 	}
9359 
9360 	commit_id = branch_head_commit_id;
9361 	error = got_object_open_as_commit(&commit, repo, commit_id);
9362 	if (error)
9363 		goto done;
9364 
9365 	parent_ids = got_object_commit_get_parent_ids(commit);
9366 	pid = STAILQ_FIRST(parent_ids);
9367 	if (pid == NULL) {
9368 		if (!continue_rebase) {
9369 			error = got_worktree_rebase_abort(worktree, fileindex,
9370 			    repo, new_base_branch, abort_progress, &upa);
9371 			if (error)
9372 				goto done;
9373 			printf("Rebase of %s aborted\n",
9374 			    got_ref_get_name(branch));
9375 			print_merge_progress_stats(&upa);
9376 
9377 		}
9378 		error = got_error(GOT_ERR_EMPTY_REBASE);
9379 		goto done;
9380 	}
9381 	error = collect_commits(&commits, commit_id, pid->id,
9382 	    yca_id, got_worktree_get_path_prefix(worktree),
9383 	    GOT_ERR_REBASE_PATH, repo);
9384 	got_object_commit_close(commit);
9385 	commit = NULL;
9386 	if (error)
9387 		goto done;
9388 
9389 	if (STAILQ_EMPTY(&commits)) {
9390 		if (continue_rebase) {
9391 			error = rebase_complete(worktree, fileindex,
9392 			    branch, new_base_branch, tmp_branch, repo,
9393 			    create_backup);
9394 			goto done;
9395 		} else {
9396 			/* Fast-forward the reference of the branch. */
9397 			struct got_object_id *new_head_commit_id;
9398 			char *id_str;
9399 			error = got_ref_resolve(&new_head_commit_id, repo,
9400 			    new_base_branch);
9401 			if (error)
9402 				goto done;
9403 			error = got_object_id_str(&id_str, new_head_commit_id);
9404 			printf("Forwarding %s to commit %s\n",
9405 			    got_ref_get_name(branch), id_str);
9406 			free(id_str);
9407 			error = got_ref_change_ref(branch,
9408 			    new_head_commit_id);
9409 			if (error)
9410 				goto done;
9411 			/* No backup needed since objects did not change. */
9412 			create_backup = 0;
9413 		}
9414 	}
9415 
9416 	pid = NULL;
9417 	STAILQ_FOREACH(qid, &commits, entry) {
9418 
9419 		commit_id = qid->id;
9420 		parent_id = pid ? pid->id : yca_id;
9421 		pid = qid;
9422 
9423 		memset(&upa, 0, sizeof(upa));
9424 		error = got_worktree_rebase_merge_files(&merged_paths,
9425 		    worktree, fileindex, parent_id, commit_id, repo,
9426 		    update_progress, &upa, check_cancelled, NULL);
9427 		if (error)
9428 			goto done;
9429 
9430 		print_merge_progress_stats(&upa);
9431 		if (upa.conflicts > 0 || upa.missing > 0 ||
9432 		    upa.not_deleted > 0 || upa.unversioned > 0) {
9433 			if (upa.conflicts > 0) {
9434 				error = show_rebase_merge_conflict(qid->id,
9435 				    repo);
9436 				if (error)
9437 					goto done;
9438 			}
9439 			got_worktree_rebase_pathlist_free(&merged_paths);
9440 			break;
9441 		}
9442 
9443 		error = rebase_commit(&merged_paths, worktree, fileindex,
9444 		    tmp_branch, commit_id, repo);
9445 		got_worktree_rebase_pathlist_free(&merged_paths);
9446 		if (error)
9447 			goto done;
9448 	}
9449 
9450 	if (upa.conflicts > 0 || upa.missing > 0 ||
9451 	    upa.not_deleted > 0 || upa.unversioned > 0) {
9452 		error = got_worktree_rebase_postpone(worktree, fileindex);
9453 		if (error)
9454 			goto done;
9455 		if (upa.conflicts > 0 && upa.missing == 0 &&
9456 		    upa.not_deleted == 0 && upa.unversioned == 0) {
9457 			error = got_error_msg(GOT_ERR_CONFLICTS,
9458 			    "conflicts must be resolved before rebasing "
9459 			    "can continue");
9460 		} else if (upa.conflicts > 0) {
9461 			error = got_error_msg(GOT_ERR_CONFLICTS,
9462 			    "conflicts must be resolved before rebasing "
9463 			    "can continue; changes destined for some "
9464 			    "files were not yet merged and should be "
9465 			    "merged manually if required before the "
9466 			    "rebase operation is continued");
9467 		} else {
9468 			error = got_error_msg(GOT_ERR_CONFLICTS,
9469 			    "changes destined for some files were not "
9470 			    "yet merged and should be merged manually "
9471 			    "if required before the rebase operation "
9472 			    "is continued");
9473 		}
9474 	} else
9475 		error = rebase_complete(worktree, fileindex, branch,
9476 		    new_base_branch, tmp_branch, repo, create_backup);
9477 done:
9478 	got_object_id_queue_free(&commits);
9479 	free(branch_head_commit_id);
9480 	free(resume_commit_id);
9481 	free(yca_id);
9482 	if (commit)
9483 		got_object_commit_close(commit);
9484 	if (branch)
9485 		got_ref_close(branch);
9486 	if (new_base_branch)
9487 		got_ref_close(new_base_branch);
9488 	if (tmp_branch)
9489 		got_ref_close(tmp_branch);
9490 	if (worktree)
9491 		got_worktree_close(worktree);
9492 	if (repo) {
9493 		const struct got_error *close_err = got_repo_close(repo);
9494 		if (error == NULL)
9495 			error = close_err;
9496 	}
9497 	return error;
9498 }
9499 
9500 __dead static void
9501 usage_histedit(void)
9502 {
9503 	fprintf(stderr, "usage: %s histedit [-a] [-c] [-e] [-f] "
9504 	    "[-F histedit-script] [-m] [-l] [-X] [branch]\n",
9505 	    getprogname());
9506 	exit(1);
9507 }
9508 
9509 #define GOT_HISTEDIT_PICK 'p'
9510 #define GOT_HISTEDIT_EDIT 'e'
9511 #define GOT_HISTEDIT_FOLD 'f'
9512 #define GOT_HISTEDIT_DROP 'd'
9513 #define GOT_HISTEDIT_MESG 'm'
9514 
9515 static const struct got_histedit_cmd {
9516 	unsigned char code;
9517 	const char *name;
9518 	const char *desc;
9519 } got_histedit_cmds[] = {
9520 	{ GOT_HISTEDIT_PICK, "pick", "use commit" },
9521 	{ GOT_HISTEDIT_EDIT, "edit", "use commit but stop for amending" },
9522 	{ GOT_HISTEDIT_FOLD, "fold", "combine with next commit that will "
9523 	    "be used" },
9524 	{ GOT_HISTEDIT_DROP, "drop", "remove commit from history" },
9525 	{ GOT_HISTEDIT_MESG, "mesg",
9526 	    "single-line log message for commit above (open editor if empty)" },
9527 };
9528 
9529 struct got_histedit_list_entry {
9530 	TAILQ_ENTRY(got_histedit_list_entry) entry;
9531 	struct got_object_id *commit_id;
9532 	const struct got_histedit_cmd *cmd;
9533 	char *logmsg;
9534 };
9535 TAILQ_HEAD(got_histedit_list, got_histedit_list_entry);
9536 
9537 static const struct got_error *
9538 histedit_write_commit(struct got_object_id *commit_id, const char *cmdname,
9539     FILE *f, struct got_repository *repo)
9540 {
9541 	const struct got_error *err = NULL;
9542 	char *logmsg = NULL, *id_str = NULL;
9543 	struct got_commit_object *commit = NULL;
9544 	int n;
9545 
9546 	err = got_object_open_as_commit(&commit, repo, commit_id);
9547 	if (err)
9548 		goto done;
9549 
9550 	err = get_short_logmsg(&logmsg, 34, commit);
9551 	if (err)
9552 		goto done;
9553 
9554 	err = got_object_id_str(&id_str, commit_id);
9555 	if (err)
9556 		goto done;
9557 
9558 	n = fprintf(f, "%s %s %s\n", cmdname, id_str, logmsg);
9559 	if (n < 0)
9560 		err = got_ferror(f, GOT_ERR_IO);
9561 done:
9562 	if (commit)
9563 		got_object_commit_close(commit);
9564 	free(id_str);
9565 	free(logmsg);
9566 	return err;
9567 }
9568 
9569 static const struct got_error *
9570 histedit_write_commit_list(struct got_object_id_queue *commits,
9571     FILE *f, int edit_logmsg_only, int fold_only, int edit_only,
9572     struct got_repository *repo)
9573 {
9574 	const struct got_error *err = NULL;
9575 	struct got_object_qid *qid;
9576 	const char *histedit_cmd = NULL;
9577 
9578 	if (STAILQ_EMPTY(commits))
9579 		return got_error(GOT_ERR_EMPTY_HISTEDIT);
9580 
9581 	STAILQ_FOREACH(qid, commits, entry) {
9582 		histedit_cmd = got_histedit_cmds[0].name;
9583 		if (edit_only)
9584 			histedit_cmd = "edit";
9585 		else if (fold_only && STAILQ_NEXT(qid, entry) != NULL)
9586 			histedit_cmd = "fold";
9587 		err = histedit_write_commit(qid->id, histedit_cmd, f, repo);
9588 		if (err)
9589 			break;
9590 		if (edit_logmsg_only) {
9591 			int n = fprintf(f, "%c\n", GOT_HISTEDIT_MESG);
9592 			if (n < 0) {
9593 				err = got_ferror(f, GOT_ERR_IO);
9594 				break;
9595 			}
9596 		}
9597 	}
9598 
9599 	return err;
9600 }
9601 
9602 static const struct got_error *
9603 write_cmd_list(FILE *f, const char *branch_name,
9604     struct got_object_id_queue *commits)
9605 {
9606 	const struct got_error *err = NULL;
9607 	size_t i;
9608 	int n;
9609 	char *id_str;
9610 	struct got_object_qid *qid;
9611 
9612 	qid = STAILQ_FIRST(commits);
9613 	err = got_object_id_str(&id_str, qid->id);
9614 	if (err)
9615 		return err;
9616 
9617 	n = fprintf(f,
9618 	    "# Editing the history of branch '%s' starting at\n"
9619 	    "# commit %s\n"
9620 	    "# Commits will be processed in order from top to "
9621 	    "bottom of this file.\n", branch_name, id_str);
9622 	if (n < 0) {
9623 		err = got_ferror(f, GOT_ERR_IO);
9624 		goto done;
9625 	}
9626 
9627 	n = fprintf(f, "# Available histedit commands:\n");
9628 	if (n < 0) {
9629 		err = got_ferror(f, GOT_ERR_IO);
9630 		goto done;
9631 	}
9632 
9633 	for (i = 0; i < nitems(got_histedit_cmds); i++) {
9634 		const struct got_histedit_cmd *cmd = &got_histedit_cmds[i];
9635 		n = fprintf(f, "#   %s (%c): %s\n", cmd->name, cmd->code,
9636 		    cmd->desc);
9637 		if (n < 0) {
9638 			err = got_ferror(f, GOT_ERR_IO);
9639 			break;
9640 		}
9641 	}
9642 done:
9643 	free(id_str);
9644 	return err;
9645 }
9646 
9647 static const struct got_error *
9648 histedit_syntax_error(int lineno)
9649 {
9650 	static char msg[42];
9651 	int ret;
9652 
9653 	ret = snprintf(msg, sizeof(msg), "histedit syntax error on line %d",
9654 	    lineno);
9655 	if (ret == -1 || ret >= sizeof(msg))
9656 		return got_error(GOT_ERR_HISTEDIT_SYNTAX);
9657 
9658 	return got_error_msg(GOT_ERR_HISTEDIT_SYNTAX, msg);
9659 }
9660 
9661 static const struct got_error *
9662 append_folded_commit_msg(char **new_msg, struct got_histedit_list_entry *hle,
9663     char *logmsg, struct got_repository *repo)
9664 {
9665 	const struct got_error *err;
9666 	struct got_commit_object *folded_commit = NULL;
9667 	char *id_str, *folded_logmsg = NULL;
9668 
9669 	err = got_object_id_str(&id_str, hle->commit_id);
9670 	if (err)
9671 		return err;
9672 
9673 	err = got_object_open_as_commit(&folded_commit, repo, hle->commit_id);
9674 	if (err)
9675 		goto done;
9676 
9677 	err = got_object_commit_get_logmsg(&folded_logmsg, folded_commit);
9678 	if (err)
9679 		goto done;
9680 	if (asprintf(new_msg, "%s%s# log message of folded commit %s: %s",
9681 	    logmsg ? logmsg : "", logmsg ? "\n" : "", id_str,
9682 	    folded_logmsg) == -1) {
9683 		err = got_error_from_errno("asprintf");
9684 	}
9685 done:
9686 	if (folded_commit)
9687 		got_object_commit_close(folded_commit);
9688 	free(id_str);
9689 	free(folded_logmsg);
9690 	return err;
9691 }
9692 
9693 static struct got_histedit_list_entry *
9694 get_folded_commits(struct got_histedit_list_entry *hle)
9695 {
9696 	struct got_histedit_list_entry *prev, *folded = NULL;
9697 
9698 	prev = TAILQ_PREV(hle, got_histedit_list, entry);
9699 	while (prev && (prev->cmd->code == GOT_HISTEDIT_FOLD ||
9700 	    prev->cmd->code == GOT_HISTEDIT_DROP)) {
9701 		if (prev->cmd->code == GOT_HISTEDIT_FOLD)
9702 			folded = prev;
9703 		prev = TAILQ_PREV(prev, got_histedit_list, entry);
9704 	}
9705 
9706 	return folded;
9707 }
9708 
9709 static const struct got_error *
9710 histedit_edit_logmsg(struct got_histedit_list_entry *hle,
9711     struct got_repository *repo)
9712 {
9713 	char *logmsg_path = NULL, *id_str = NULL, *orig_logmsg = NULL;
9714 	char *logmsg = NULL, *new_msg = NULL, *editor = NULL;
9715 	const struct got_error *err = NULL;
9716 	struct got_commit_object *commit = NULL;
9717 	int logmsg_len;
9718 	int fd;
9719 	struct got_histedit_list_entry *folded = NULL;
9720 
9721 	err = got_object_open_as_commit(&commit, repo, hle->commit_id);
9722 	if (err)
9723 		return err;
9724 
9725 	folded = get_folded_commits(hle);
9726 	if (folded) {
9727 		while (folded != hle) {
9728 			if (folded->cmd->code == GOT_HISTEDIT_DROP) {
9729 				folded = TAILQ_NEXT(folded, entry);
9730 				continue;
9731 			}
9732 			err = append_folded_commit_msg(&new_msg, folded,
9733 			    logmsg, repo);
9734 			if (err)
9735 				goto done;
9736 			free(logmsg);
9737 			logmsg = new_msg;
9738 			folded = TAILQ_NEXT(folded, entry);
9739 		}
9740 	}
9741 
9742 	err = got_object_id_str(&id_str, hle->commit_id);
9743 	if (err)
9744 		goto done;
9745 	err = got_object_commit_get_logmsg(&orig_logmsg, commit);
9746 	if (err)
9747 		goto done;
9748 	logmsg_len = asprintf(&new_msg,
9749 	    "%s\n# original log message of commit %s: %s",
9750 	    logmsg ? logmsg : "", id_str, orig_logmsg);
9751 	if (logmsg_len == -1) {
9752 		err = got_error_from_errno("asprintf");
9753 		goto done;
9754 	}
9755 	free(logmsg);
9756 	logmsg = new_msg;
9757 
9758 	err = got_object_id_str(&id_str, hle->commit_id);
9759 	if (err)
9760 		goto done;
9761 
9762 	err = got_opentemp_named_fd(&logmsg_path, &fd,
9763 	    GOT_TMPDIR_STR "/got-logmsg");
9764 	if (err)
9765 		goto done;
9766 
9767 	write(fd, logmsg, logmsg_len);
9768 	close(fd);
9769 
9770 	err = get_editor(&editor);
9771 	if (err)
9772 		goto done;
9773 
9774 	err = edit_logmsg(&hle->logmsg, editor, logmsg_path, logmsg,
9775 	    logmsg_len, 0);
9776 	if (err) {
9777 		if (err->code != GOT_ERR_COMMIT_MSG_EMPTY)
9778 			goto done;
9779 		err = NULL;
9780 		hle->logmsg = strdup(new_msg);
9781 		if (hle->logmsg == NULL)
9782 			err = got_error_from_errno("strdup");
9783 	}
9784 done:
9785 	if (logmsg_path && unlink(logmsg_path) != 0 && err == NULL)
9786 		err = got_error_from_errno2("unlink", logmsg_path);
9787 	free(logmsg_path);
9788 	free(logmsg);
9789 	free(orig_logmsg);
9790 	free(editor);
9791 	if (commit)
9792 		got_object_commit_close(commit);
9793 	return err;
9794 }
9795 
9796 static const struct got_error *
9797 histedit_parse_list(struct got_histedit_list *histedit_cmds,
9798     FILE *f, struct got_repository *repo)
9799 {
9800 	const struct got_error *err = NULL;
9801 	char *line = NULL, *p, *end;
9802 	size_t i, size;
9803 	ssize_t len;
9804 	int lineno = 0;
9805 	const struct got_histedit_cmd *cmd;
9806 	struct got_object_id *commit_id = NULL;
9807 	struct got_histedit_list_entry *hle = NULL;
9808 
9809 	for (;;) {
9810 		len = getline(&line, &size, f);
9811 		if (len == -1) {
9812 			const struct got_error *getline_err;
9813 			if (feof(f))
9814 				break;
9815 			getline_err = got_error_from_errno("getline");
9816 			err = got_ferror(f, getline_err->code);
9817 			break;
9818 		}
9819 		lineno++;
9820 		p = line;
9821 		while (isspace((unsigned char)p[0]))
9822 			p++;
9823 		if (p[0] == '#' || p[0] == '\0') {
9824 			free(line);
9825 			line = NULL;
9826 			continue;
9827 		}
9828 		cmd = NULL;
9829 		for (i = 0; i < nitems(got_histedit_cmds); i++) {
9830 			cmd = &got_histedit_cmds[i];
9831 			if (strncmp(cmd->name, p, strlen(cmd->name)) == 0 &&
9832 			    isspace((unsigned char)p[strlen(cmd->name)])) {
9833 				p += strlen(cmd->name);
9834 				break;
9835 			}
9836 			if (p[0] == cmd->code && isspace((unsigned char)p[1])) {
9837 				p++;
9838 				break;
9839 			}
9840 		}
9841 		if (i == nitems(got_histedit_cmds)) {
9842 			err = histedit_syntax_error(lineno);
9843 			break;
9844 		}
9845 		while (isspace((unsigned char)p[0]))
9846 			p++;
9847 		if (cmd->code == GOT_HISTEDIT_MESG) {
9848 			if (hle == NULL || hle->logmsg != NULL) {
9849 				err = got_error(GOT_ERR_HISTEDIT_CMD);
9850 				break;
9851 			}
9852 			if (p[0] == '\0') {
9853 				err = histedit_edit_logmsg(hle, repo);
9854 				if (err)
9855 					break;
9856 			} else {
9857 				hle->logmsg = strdup(p);
9858 				if (hle->logmsg == NULL) {
9859 					err = got_error_from_errno("strdup");
9860 					break;
9861 				}
9862 			}
9863 			free(line);
9864 			line = NULL;
9865 			continue;
9866 		} else {
9867 			end = p;
9868 			while (end[0] && !isspace((unsigned char)end[0]))
9869 				end++;
9870 			*end = '\0';
9871 
9872 			err = got_object_resolve_id_str(&commit_id, repo, p);
9873 			if (err) {
9874 				/* override error code */
9875 				err = histedit_syntax_error(lineno);
9876 				break;
9877 			}
9878 		}
9879 		hle = malloc(sizeof(*hle));
9880 		if (hle == NULL) {
9881 			err = got_error_from_errno("malloc");
9882 			break;
9883 		}
9884 		hle->cmd = cmd;
9885 		hle->commit_id = commit_id;
9886 		hle->logmsg = NULL;
9887 		commit_id = NULL;
9888 		free(line);
9889 		line = NULL;
9890 		TAILQ_INSERT_TAIL(histedit_cmds, hle, entry);
9891 	}
9892 
9893 	free(line);
9894 	free(commit_id);
9895 	return err;
9896 }
9897 
9898 static const struct got_error *
9899 histedit_check_script(struct got_histedit_list *histedit_cmds,
9900     struct got_object_id_queue *commits, struct got_repository *repo)
9901 {
9902 	const struct got_error *err = NULL;
9903 	struct got_object_qid *qid;
9904 	struct got_histedit_list_entry *hle;
9905 	static char msg[92];
9906 	char *id_str;
9907 
9908 	if (TAILQ_EMPTY(histedit_cmds))
9909 		return got_error_msg(GOT_ERR_EMPTY_HISTEDIT,
9910 		    "histedit script contains no commands");
9911 	if (STAILQ_EMPTY(commits))
9912 		return got_error(GOT_ERR_EMPTY_HISTEDIT);
9913 
9914 	TAILQ_FOREACH(hle, histedit_cmds, entry) {
9915 		struct got_histedit_list_entry *hle2;
9916 		TAILQ_FOREACH(hle2, histedit_cmds, entry) {
9917 			if (hle == hle2)
9918 				continue;
9919 			if (got_object_id_cmp(hle->commit_id,
9920 			    hle2->commit_id) != 0)
9921 				continue;
9922 			err = got_object_id_str(&id_str, hle->commit_id);
9923 			if (err)
9924 				return err;
9925 			snprintf(msg, sizeof(msg), "commit %s is listed "
9926 			    "more than once in histedit script", id_str);
9927 			free(id_str);
9928 			return got_error_msg(GOT_ERR_HISTEDIT_CMD, msg);
9929 		}
9930 	}
9931 
9932 	STAILQ_FOREACH(qid, commits, entry) {
9933 		TAILQ_FOREACH(hle, histedit_cmds, entry) {
9934 			if (got_object_id_cmp(qid->id, hle->commit_id) == 0)
9935 				break;
9936 		}
9937 		if (hle == NULL) {
9938 			err = got_object_id_str(&id_str, qid->id);
9939 			if (err)
9940 				return err;
9941 			snprintf(msg, sizeof(msg),
9942 			    "commit %s missing from histedit script", id_str);
9943 			free(id_str);
9944 			return got_error_msg(GOT_ERR_HISTEDIT_CMD, msg);
9945 		}
9946 	}
9947 
9948 	hle = TAILQ_LAST(histedit_cmds, got_histedit_list);
9949 	if (hle && hle->cmd->code == GOT_HISTEDIT_FOLD)
9950 		return got_error_msg(GOT_ERR_HISTEDIT_CMD,
9951 		    "last commit in histedit script cannot be folded");
9952 
9953 	return NULL;
9954 }
9955 
9956 static const struct got_error *
9957 histedit_run_editor(struct got_histedit_list *histedit_cmds,
9958     const char *path, struct got_object_id_queue *commits,
9959     struct got_repository *repo)
9960 {
9961 	const struct got_error *err = NULL;
9962 	char *editor;
9963 	FILE *f = NULL;
9964 
9965 	err = get_editor(&editor);
9966 	if (err)
9967 		return err;
9968 
9969 	if (spawn_editor(editor, path) == -1) {
9970 		err = got_error_from_errno("failed spawning editor");
9971 		goto done;
9972 	}
9973 
9974 	f = fopen(path, "re");
9975 	if (f == NULL) {
9976 		err = got_error_from_errno("fopen");
9977 		goto done;
9978 	}
9979 	err = histedit_parse_list(histedit_cmds, f, repo);
9980 	if (err)
9981 		goto done;
9982 
9983 	err = histedit_check_script(histedit_cmds, commits, repo);
9984 done:
9985 	if (f && fclose(f) == EOF && err == NULL)
9986 		err = got_error_from_errno("fclose");
9987 	free(editor);
9988 	return err;
9989 }
9990 
9991 static const struct got_error *
9992 histedit_edit_list_retry(struct got_histedit_list *, const struct got_error *,
9993     struct got_object_id_queue *, const char *, const char *,
9994     struct got_repository *);
9995 
9996 static const struct got_error *
9997 histedit_edit_script(struct got_histedit_list *histedit_cmds,
9998     struct got_object_id_queue *commits, const char *branch_name,
9999     int edit_logmsg_only, int fold_only, int edit_only,
10000     struct got_repository *repo)
10001 {
10002 	const struct got_error *err;
10003 	FILE *f = NULL;
10004 	char *path = NULL;
10005 
10006 	err = got_opentemp_named(&path, &f, "got-histedit");
10007 	if (err)
10008 		return err;
10009 
10010 	err = write_cmd_list(f, branch_name, commits);
10011 	if (err)
10012 		goto done;
10013 
10014 	err = histedit_write_commit_list(commits, f, edit_logmsg_only,
10015 	    fold_only, edit_only, repo);
10016 	if (err)
10017 		goto done;
10018 
10019 	if (edit_logmsg_only || fold_only || edit_only) {
10020 		rewind(f);
10021 		err = histedit_parse_list(histedit_cmds, f, repo);
10022 	} else {
10023 		if (fclose(f) == EOF) {
10024 			err = got_error_from_errno("fclose");
10025 			goto done;
10026 		}
10027 		f = NULL;
10028 		err = histedit_run_editor(histedit_cmds, path, commits, repo);
10029 		if (err) {
10030 			if (err->code != GOT_ERR_HISTEDIT_SYNTAX &&
10031 			    err->code != GOT_ERR_HISTEDIT_CMD)
10032 				goto done;
10033 			err = histedit_edit_list_retry(histedit_cmds, err,
10034 			    commits, path, branch_name, repo);
10035 		}
10036 	}
10037 done:
10038 	if (f && fclose(f) == EOF && err == NULL)
10039 		err = got_error_from_errno("fclose");
10040 	if (path && unlink(path) != 0 && err == NULL)
10041 		err = got_error_from_errno2("unlink", path);
10042 	free(path);
10043 	return err;
10044 }
10045 
10046 static const struct got_error *
10047 histedit_save_list(struct got_histedit_list *histedit_cmds,
10048     struct got_worktree *worktree, struct got_repository *repo)
10049 {
10050 	const struct got_error *err = NULL;
10051 	char *path = NULL;
10052 	FILE *f = NULL;
10053 	struct got_histedit_list_entry *hle;
10054 	struct got_commit_object *commit = NULL;
10055 
10056 	err = got_worktree_get_histedit_script_path(&path, worktree);
10057 	if (err)
10058 		return err;
10059 
10060 	f = fopen(path, "we");
10061 	if (f == NULL) {
10062 		err = got_error_from_errno2("fopen", path);
10063 		goto done;
10064 	}
10065 	TAILQ_FOREACH(hle, histedit_cmds, entry) {
10066 		err = histedit_write_commit(hle->commit_id, hle->cmd->name, f,
10067 		    repo);
10068 		if (err)
10069 			break;
10070 
10071 		if (hle->logmsg) {
10072 			int n = fprintf(f, "%c %s\n",
10073 			    GOT_HISTEDIT_MESG, hle->logmsg);
10074 			if (n < 0) {
10075 				err = got_ferror(f, GOT_ERR_IO);
10076 				break;
10077 			}
10078 		}
10079 	}
10080 done:
10081 	if (f && fclose(f) == EOF && err == NULL)
10082 		err = got_error_from_errno("fclose");
10083 	free(path);
10084 	if (commit)
10085 		got_object_commit_close(commit);
10086 	return err;
10087 }
10088 
10089 void
10090 histedit_free_list(struct got_histedit_list *histedit_cmds)
10091 {
10092 	struct got_histedit_list_entry *hle;
10093 
10094 	while ((hle = TAILQ_FIRST(histedit_cmds))) {
10095 		TAILQ_REMOVE(histedit_cmds, hle, entry);
10096 		free(hle);
10097 	}
10098 }
10099 
10100 static const struct got_error *
10101 histedit_load_list(struct got_histedit_list *histedit_cmds,
10102     const char *path, struct got_repository *repo)
10103 {
10104 	const struct got_error *err = NULL;
10105 	FILE *f = NULL;
10106 
10107 	f = fopen(path, "re");
10108 	if (f == NULL) {
10109 		err = got_error_from_errno2("fopen", path);
10110 		goto done;
10111 	}
10112 
10113 	err = histedit_parse_list(histedit_cmds, f, repo);
10114 done:
10115 	if (f && fclose(f) == EOF && err == NULL)
10116 		err = got_error_from_errno("fclose");
10117 	return err;
10118 }
10119 
10120 static const struct got_error *
10121 histedit_edit_list_retry(struct got_histedit_list *histedit_cmds,
10122     const struct got_error *edit_err, struct got_object_id_queue *commits,
10123     const char *path, const char *branch_name, struct got_repository *repo)
10124 {
10125 	const struct got_error *err = NULL, *prev_err = edit_err;
10126 	int resp = ' ';
10127 
10128 	while (resp != 'c' && resp != 'r' && resp != 'a') {
10129 		printf("%s: %s\n(c)ontinue editing, (r)estart editing, "
10130 		    "or (a)bort: ", getprogname(), prev_err->msg);
10131 		resp = getchar();
10132 		if (resp == '\n')
10133 			resp = getchar();
10134 		if (resp == 'c') {
10135 			histedit_free_list(histedit_cmds);
10136 			err = histedit_run_editor(histedit_cmds, path, commits,
10137 			    repo);
10138 			if (err) {
10139 				if (err->code != GOT_ERR_HISTEDIT_SYNTAX &&
10140 				    err->code != GOT_ERR_HISTEDIT_CMD)
10141 					break;
10142 				prev_err = err;
10143 				resp = ' ';
10144 				continue;
10145 			}
10146 			break;
10147 		} else if (resp == 'r') {
10148 			histedit_free_list(histedit_cmds);
10149 			err = histedit_edit_script(histedit_cmds,
10150 			    commits, branch_name, 0, 0, 0, repo);
10151 			if (err) {
10152 				if (err->code != GOT_ERR_HISTEDIT_SYNTAX &&
10153 				    err->code != GOT_ERR_HISTEDIT_CMD)
10154 					break;
10155 				prev_err = err;
10156 				resp = ' ';
10157 				continue;
10158 			}
10159 			break;
10160 		} else if (resp == 'a') {
10161 			err = got_error(GOT_ERR_HISTEDIT_CANCEL);
10162 			break;
10163 		} else
10164 			printf("invalid response '%c'\n", resp);
10165 	}
10166 
10167 	return err;
10168 }
10169 
10170 static const struct got_error *
10171 histedit_complete(struct got_worktree *worktree,
10172     struct got_fileindex *fileindex, struct got_reference *tmp_branch,
10173     struct got_reference *branch, struct got_repository *repo)
10174 {
10175 	printf("Switching work tree to %s\n",
10176 	    got_ref_get_symref_target(branch));
10177 	return got_worktree_histedit_complete(worktree, fileindex, tmp_branch,
10178 	    branch, repo);
10179 }
10180 
10181 static const struct got_error *
10182 show_histedit_progress(struct got_commit_object *commit,
10183     struct got_histedit_list_entry *hle, struct got_object_id *new_id)
10184 {
10185 	const struct got_error *err;
10186 	char *old_id_str = NULL, *new_id_str = NULL, *logmsg = NULL;
10187 
10188 	err = got_object_id_str(&old_id_str, hle->commit_id);
10189 	if (err)
10190 		goto done;
10191 
10192 	if (new_id) {
10193 		err = got_object_id_str(&new_id_str, new_id);
10194 		if (err)
10195 			goto done;
10196 	}
10197 
10198 	old_id_str[12] = '\0';
10199 	if (new_id_str)
10200 		new_id_str[12] = '\0';
10201 
10202 	if (hle->logmsg) {
10203 		logmsg = strdup(hle->logmsg);
10204 		if (logmsg == NULL) {
10205 			err = got_error_from_errno("strdup");
10206 			goto done;
10207 		}
10208 		trim_logmsg(logmsg, 42);
10209 	} else {
10210 		err = get_short_logmsg(&logmsg, 42, commit);
10211 		if (err)
10212 			goto done;
10213 	}
10214 
10215 	switch (hle->cmd->code) {
10216 	case GOT_HISTEDIT_PICK:
10217 	case GOT_HISTEDIT_EDIT:
10218 		printf("%s -> %s: %s\n", old_id_str,
10219 		    new_id_str ? new_id_str : "no-op change", logmsg);
10220 		break;
10221 	case GOT_HISTEDIT_DROP:
10222 	case GOT_HISTEDIT_FOLD:
10223 		printf("%s ->  %s commit: %s\n", old_id_str, hle->cmd->name,
10224 		    logmsg);
10225 		break;
10226 	default:
10227 		break;
10228 	}
10229 done:
10230 	free(old_id_str);
10231 	free(new_id_str);
10232 	return err;
10233 }
10234 
10235 static const struct got_error *
10236 histedit_commit(struct got_pathlist_head *merged_paths,
10237     struct got_worktree *worktree, struct got_fileindex *fileindex,
10238     struct got_reference *tmp_branch, struct got_histedit_list_entry *hle,
10239     struct got_repository *repo)
10240 {
10241 	const struct got_error *err;
10242 	struct got_commit_object *commit;
10243 	struct got_object_id *new_commit_id;
10244 
10245 	if ((hle->cmd->code == GOT_HISTEDIT_EDIT || get_folded_commits(hle))
10246 	    && hle->logmsg == NULL) {
10247 		err = histedit_edit_logmsg(hle, repo);
10248 		if (err)
10249 			return err;
10250 	}
10251 
10252 	err = got_object_open_as_commit(&commit, repo, hle->commit_id);
10253 	if (err)
10254 		return err;
10255 
10256 	err = got_worktree_histedit_commit(&new_commit_id, merged_paths,
10257 	    worktree, fileindex, tmp_branch, commit, hle->commit_id,
10258 	    hle->logmsg, repo);
10259 	if (err) {
10260 		if (err->code != GOT_ERR_COMMIT_NO_CHANGES)
10261 			goto done;
10262 		err = show_histedit_progress(commit, hle, NULL);
10263 	} else {
10264 		err = show_histedit_progress(commit, hle, new_commit_id);
10265 		free(new_commit_id);
10266 	}
10267 done:
10268 	got_object_commit_close(commit);
10269 	return err;
10270 }
10271 
10272 static const struct got_error *
10273 histedit_skip_commit(struct got_histedit_list_entry *hle,
10274     struct got_worktree *worktree, struct got_repository *repo)
10275 {
10276 	const struct got_error *error;
10277 	struct got_commit_object *commit;
10278 
10279 	error = got_worktree_histedit_skip_commit(worktree, hle->commit_id,
10280 	    repo);
10281 	if (error)
10282 		return error;
10283 
10284 	error = got_object_open_as_commit(&commit, repo, hle->commit_id);
10285 	if (error)
10286 		return error;
10287 
10288 	error = show_histedit_progress(commit, hle, NULL);
10289 	got_object_commit_close(commit);
10290 	return error;
10291 }
10292 
10293 static const struct got_error *
10294 check_local_changes(void *arg, unsigned char status,
10295     unsigned char staged_status, const char *path,
10296     struct got_object_id *blob_id, struct got_object_id *staged_blob_id,
10297     struct got_object_id *commit_id, int dirfd, const char *de_name)
10298 {
10299 	int *have_local_changes = arg;
10300 
10301 	switch (status) {
10302 	case GOT_STATUS_ADD:
10303 	case GOT_STATUS_DELETE:
10304 	case GOT_STATUS_MODIFY:
10305 	case GOT_STATUS_CONFLICT:
10306 		*have_local_changes = 1;
10307 		return got_error(GOT_ERR_CANCELLED);
10308 	default:
10309 		break;
10310 	}
10311 
10312 	switch (staged_status) {
10313 	case GOT_STATUS_ADD:
10314 	case GOT_STATUS_DELETE:
10315 	case GOT_STATUS_MODIFY:
10316 		*have_local_changes = 1;
10317 		return got_error(GOT_ERR_CANCELLED);
10318 	default:
10319 		break;
10320 	}
10321 
10322 	return NULL;
10323 }
10324 
10325 static const struct got_error *
10326 cmd_histedit(int argc, char *argv[])
10327 {
10328 	const struct got_error *error = NULL;
10329 	struct got_worktree *worktree = NULL;
10330 	struct got_fileindex *fileindex = NULL;
10331 	struct got_repository *repo = NULL;
10332 	char *cwd = NULL;
10333 	struct got_reference *branch = NULL;
10334 	struct got_reference *tmp_branch = NULL;
10335 	struct got_object_id *resume_commit_id = NULL;
10336 	struct got_object_id *base_commit_id = NULL;
10337 	struct got_object_id *head_commit_id = NULL;
10338 	struct got_commit_object *commit = NULL;
10339 	int ch, rebase_in_progress = 0, merge_in_progress = 0;
10340 	struct got_update_progress_arg upa;
10341 	int edit_in_progress = 0, abort_edit = 0, continue_edit = 0;
10342 	int edit_logmsg_only = 0, fold_only = 0, edit_only = 0;
10343 	int list_backups = 0, delete_backups = 0;
10344 	const char *edit_script_path = NULL;
10345 	struct got_object_id_queue commits;
10346 	struct got_pathlist_head merged_paths;
10347 	const struct got_object_id_queue *parent_ids;
10348 	struct got_object_qid *pid;
10349 	struct got_histedit_list histedit_cmds;
10350 	struct got_histedit_list_entry *hle;
10351 
10352 	STAILQ_INIT(&commits);
10353 	TAILQ_INIT(&histedit_cmds);
10354 	TAILQ_INIT(&merged_paths);
10355 	memset(&upa, 0, sizeof(upa));
10356 
10357 	while ((ch = getopt(argc, argv, "acefF:mlX")) != -1) {
10358 		switch (ch) {
10359 		case 'a':
10360 			abort_edit = 1;
10361 			break;
10362 		case 'c':
10363 			continue_edit = 1;
10364 			break;
10365 		case 'e':
10366 			edit_only = 1;
10367 			break;
10368 		case 'f':
10369 			fold_only = 1;
10370 			break;
10371 		case 'F':
10372 			edit_script_path = optarg;
10373 			break;
10374 		case 'm':
10375 			edit_logmsg_only = 1;
10376 			break;
10377 		case 'l':
10378 			list_backups = 1;
10379 			break;
10380 		case 'X':
10381 			delete_backups = 1;
10382 			break;
10383 		default:
10384 			usage_histedit();
10385 			/* NOTREACHED */
10386 		}
10387 	}
10388 
10389 	argc -= optind;
10390 	argv += optind;
10391 
10392 #ifndef PROFILE
10393 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
10394 	    "unveil", NULL) == -1)
10395 		err(1, "pledge");
10396 #endif
10397 	if (abort_edit && continue_edit)
10398 		option_conflict('a', 'c');
10399 	if (edit_script_path && edit_logmsg_only)
10400 		option_conflict('F', 'm');
10401 	if (abort_edit && edit_logmsg_only)
10402 		option_conflict('a', 'm');
10403 	if (continue_edit && edit_logmsg_only)
10404 		option_conflict('c', 'm');
10405 	if (abort_edit && fold_only)
10406 		option_conflict('a', 'f');
10407 	if (continue_edit && fold_only)
10408 		option_conflict('c', 'f');
10409 	if (fold_only && edit_logmsg_only)
10410 		option_conflict('f', 'm');
10411 	if (edit_script_path && fold_only)
10412 		option_conflict('F', 'f');
10413 	if (abort_edit && edit_only)
10414 		option_conflict('a', 'e');
10415 	if (continue_edit && edit_only)
10416 		option_conflict('c', 'e');
10417 	if (edit_only && edit_logmsg_only)
10418 		option_conflict('e', 'm');
10419 	if (edit_script_path && edit_only)
10420 		option_conflict('F', 'e');
10421 	if (list_backups) {
10422 		if (abort_edit)
10423 			option_conflict('l', 'a');
10424 		if (continue_edit)
10425 			option_conflict('l', 'c');
10426 		if (edit_script_path)
10427 			option_conflict('l', 'F');
10428 		if (edit_logmsg_only)
10429 			option_conflict('l', 'm');
10430 		if (fold_only)
10431 			option_conflict('l', 'f');
10432 		if (edit_only)
10433 			option_conflict('l', 'e');
10434 		if (delete_backups)
10435 			option_conflict('l', 'X');
10436 		if (argc != 0 && argc != 1)
10437 			usage_histedit();
10438 	} else if (delete_backups) {
10439 		if (abort_edit)
10440 			option_conflict('X', 'a');
10441 		if (continue_edit)
10442 			option_conflict('X', 'c');
10443 		if (edit_script_path)
10444 			option_conflict('X', 'F');
10445 		if (edit_logmsg_only)
10446 			option_conflict('X', 'm');
10447 		if (fold_only)
10448 			option_conflict('X', 'f');
10449 		if (edit_only)
10450 			option_conflict('X', 'e');
10451 		if (list_backups)
10452 			option_conflict('X', 'l');
10453 		if (argc != 0 && argc != 1)
10454 			usage_histedit();
10455 	} else if (argc != 0)
10456 		usage_histedit();
10457 
10458 	/*
10459 	 * This command cannot apply unveil(2) in all cases because the
10460 	 * user may choose to run an editor to edit the histedit script
10461 	 * and to edit individual commit log messages.
10462 	 * unveil(2) traverses exec(2); if an editor is used we have to
10463 	 * apply unveil after edit script and log messages have been written.
10464 	 * XXX TODO: Make use of unveil(2) where possible.
10465 	 */
10466 
10467 	cwd = getcwd(NULL, 0);
10468 	if (cwd == NULL) {
10469 		error = got_error_from_errno("getcwd");
10470 		goto done;
10471 	}
10472 	error = got_worktree_open(&worktree, cwd);
10473 	if (error) {
10474 		if (list_backups || delete_backups) {
10475 			if (error->code != GOT_ERR_NOT_WORKTREE)
10476 				goto done;
10477 		} else {
10478 			if (error->code == GOT_ERR_NOT_WORKTREE)
10479 				error = wrap_not_worktree_error(error,
10480 				    "histedit", cwd);
10481 			goto done;
10482 		}
10483 	}
10484 
10485 	if (list_backups || delete_backups) {
10486 		error = got_repo_open(&repo,
10487 		    worktree ? got_worktree_get_repo_path(worktree) : cwd,
10488 		    NULL);
10489 		if (error != NULL)
10490 			goto done;
10491 		error = apply_unveil(got_repo_get_path(repo), 0,
10492 		    worktree ? got_worktree_get_root_path(worktree) : NULL);
10493 		if (error)
10494 			goto done;
10495 		error = process_backup_refs(
10496 		    GOT_WORKTREE_HISTEDIT_BACKUP_REF_PREFIX,
10497 		    argc == 1 ? argv[0] : NULL, delete_backups, repo);
10498 		goto done; /* nothing else to do */
10499 	}
10500 
10501 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
10502 	    NULL);
10503 	if (error != NULL)
10504 		goto done;
10505 
10506 	error = got_worktree_rebase_in_progress(&rebase_in_progress, worktree);
10507 	if (error)
10508 		goto done;
10509 	if (rebase_in_progress) {
10510 		error = got_error(GOT_ERR_REBASING);
10511 		goto done;
10512 	}
10513 
10514 	error = got_worktree_merge_in_progress(&merge_in_progress, worktree,
10515 	    repo);
10516 	if (error)
10517 		goto done;
10518 	if (merge_in_progress) {
10519 		error = got_error(GOT_ERR_MERGE_BUSY);
10520 		goto done;
10521 	}
10522 
10523 	error = got_worktree_histedit_in_progress(&edit_in_progress, worktree);
10524 	if (error)
10525 		goto done;
10526 
10527 	if (edit_in_progress && edit_logmsg_only) {
10528 		error = got_error_msg(GOT_ERR_HISTEDIT_BUSY,
10529 		    "histedit operation is in progress in this "
10530 		    "work tree and must be continued or aborted "
10531 		    "before the -m option can be used");
10532 		goto done;
10533 	}
10534 	if (edit_in_progress && fold_only) {
10535 		error = got_error_msg(GOT_ERR_HISTEDIT_BUSY,
10536 		    "histedit operation is in progress in this "
10537 		    "work tree and must be continued or aborted "
10538 		    "before the -f option can be used");
10539 		goto done;
10540 	}
10541 	if (edit_in_progress && edit_only) {
10542 		error = got_error_msg(GOT_ERR_HISTEDIT_BUSY,
10543 		    "histedit operation is in progress in this "
10544 		    "work tree and must be continued or aborted "
10545 		    "before the -e option can be used");
10546 		goto done;
10547 	}
10548 
10549 	if (edit_in_progress && abort_edit) {
10550 		error = got_worktree_histedit_continue(&resume_commit_id,
10551 		    &tmp_branch, &branch, &base_commit_id, &fileindex,
10552 		    worktree, repo);
10553 		if (error)
10554 			goto done;
10555 		printf("Switching work tree to %s\n",
10556 		    got_ref_get_symref_target(branch));
10557 		error = got_worktree_histedit_abort(worktree, fileindex, repo,
10558 		    branch, base_commit_id, abort_progress, &upa);
10559 		if (error)
10560 			goto done;
10561 		printf("Histedit of %s aborted\n",
10562 		    got_ref_get_symref_target(branch));
10563 		print_merge_progress_stats(&upa);
10564 		goto done; /* nothing else to do */
10565 	} else if (abort_edit) {
10566 		error = got_error(GOT_ERR_NOT_HISTEDIT);
10567 		goto done;
10568 	}
10569 
10570 	if (continue_edit) {
10571 		char *path;
10572 
10573 		if (!edit_in_progress) {
10574 			error = got_error(GOT_ERR_NOT_HISTEDIT);
10575 			goto done;
10576 		}
10577 
10578 		error = got_worktree_get_histedit_script_path(&path, worktree);
10579 		if (error)
10580 			goto done;
10581 
10582 		error = histedit_load_list(&histedit_cmds, path, repo);
10583 		free(path);
10584 		if (error)
10585 			goto done;
10586 
10587 		error = got_worktree_histedit_continue(&resume_commit_id,
10588 		    &tmp_branch, &branch, &base_commit_id, &fileindex,
10589 		    worktree, repo);
10590 		if (error)
10591 			goto done;
10592 
10593 		error = got_ref_resolve(&head_commit_id, repo, branch);
10594 		if (error)
10595 			goto done;
10596 
10597 		error = got_object_open_as_commit(&commit, repo,
10598 		    head_commit_id);
10599 		if (error)
10600 			goto done;
10601 		parent_ids = got_object_commit_get_parent_ids(commit);
10602 		pid = STAILQ_FIRST(parent_ids);
10603 		if (pid == NULL) {
10604 			error = got_error(GOT_ERR_EMPTY_HISTEDIT);
10605 			goto done;
10606 		}
10607 		error = collect_commits(&commits, head_commit_id, pid->id,
10608 		    base_commit_id, got_worktree_get_path_prefix(worktree),
10609 		    GOT_ERR_HISTEDIT_PATH, repo);
10610 		got_object_commit_close(commit);
10611 		commit = NULL;
10612 		if (error)
10613 			goto done;
10614 	} else {
10615 		if (edit_in_progress) {
10616 			error = got_error(GOT_ERR_HISTEDIT_BUSY);
10617 			goto done;
10618 		}
10619 
10620 		error = got_ref_open(&branch, repo,
10621 		    got_worktree_get_head_ref_name(worktree), 0);
10622 		if (error != NULL)
10623 			goto done;
10624 
10625 		if (strncmp(got_ref_get_name(branch), "refs/heads/", 11) != 0) {
10626 			error = got_error_msg(GOT_ERR_COMMIT_BRANCH,
10627 			    "will not edit commit history of a branch outside "
10628 			    "the \"refs/heads/\" reference namespace");
10629 			goto done;
10630 		}
10631 
10632 		error = got_ref_resolve(&head_commit_id, repo, branch);
10633 		got_ref_close(branch);
10634 		branch = NULL;
10635 		if (error)
10636 			goto done;
10637 
10638 		error = got_object_open_as_commit(&commit, repo,
10639 		    head_commit_id);
10640 		if (error)
10641 			goto done;
10642 		parent_ids = got_object_commit_get_parent_ids(commit);
10643 		pid = STAILQ_FIRST(parent_ids);
10644 		if (pid == NULL) {
10645 			error = got_error(GOT_ERR_EMPTY_HISTEDIT);
10646 			goto done;
10647 		}
10648 		error = collect_commits(&commits, head_commit_id, pid->id,
10649 		    got_worktree_get_base_commit_id(worktree),
10650 		    got_worktree_get_path_prefix(worktree),
10651 		    GOT_ERR_HISTEDIT_PATH, repo);
10652 		got_object_commit_close(commit);
10653 		commit = NULL;
10654 		if (error)
10655 			goto done;
10656 
10657 		if (STAILQ_EMPTY(&commits)) {
10658 			error = got_error(GOT_ERR_EMPTY_HISTEDIT);
10659 			goto done;
10660 		}
10661 
10662 		error = got_worktree_histedit_prepare(&tmp_branch, &branch,
10663 		    &base_commit_id, &fileindex, worktree, repo);
10664 		if (error)
10665 			goto done;
10666 
10667 		if (edit_script_path) {
10668 			error = histedit_load_list(&histedit_cmds,
10669 			    edit_script_path, repo);
10670 			if (error) {
10671 				got_worktree_histedit_abort(worktree, fileindex,
10672 				    repo, branch, base_commit_id,
10673 				    abort_progress, &upa);
10674 				print_merge_progress_stats(&upa);
10675 				goto done;
10676 			}
10677 		} else {
10678 			const char *branch_name;
10679 			branch_name = got_ref_get_symref_target(branch);
10680 			if (strncmp(branch_name, "refs/heads/", 11) == 0)
10681 				branch_name += 11;
10682 			error = histedit_edit_script(&histedit_cmds, &commits,
10683 			    branch_name, edit_logmsg_only, fold_only,
10684 			    edit_only, repo);
10685 			if (error) {
10686 				got_worktree_histedit_abort(worktree, fileindex,
10687 				    repo, branch, base_commit_id,
10688 				    abort_progress, &upa);
10689 				print_merge_progress_stats(&upa);
10690 				goto done;
10691 			}
10692 
10693 		}
10694 
10695 		error = histedit_save_list(&histedit_cmds, worktree,
10696 		    repo);
10697 		if (error) {
10698 			got_worktree_histedit_abort(worktree, fileindex,
10699 			    repo, branch, base_commit_id,
10700 			    abort_progress, &upa);
10701 			print_merge_progress_stats(&upa);
10702 			goto done;
10703 		}
10704 
10705 	}
10706 
10707 	error = histedit_check_script(&histedit_cmds, &commits, repo);
10708 	if (error)
10709 		goto done;
10710 
10711 	TAILQ_FOREACH(hle, &histedit_cmds, entry) {
10712 		if (resume_commit_id) {
10713 			if (got_object_id_cmp(hle->commit_id,
10714 			    resume_commit_id) != 0)
10715 				continue;
10716 
10717 			resume_commit_id = NULL;
10718 			if (hle->cmd->code == GOT_HISTEDIT_DROP ||
10719 			    hle->cmd->code == GOT_HISTEDIT_FOLD) {
10720 				error = histedit_skip_commit(hle, worktree,
10721 				    repo);
10722 				if (error)
10723 					goto done;
10724 			} else {
10725 				struct got_pathlist_head paths;
10726 				int have_changes = 0;
10727 
10728 				TAILQ_INIT(&paths);
10729 				error = got_pathlist_append(&paths, "", NULL);
10730 				if (error)
10731 					goto done;
10732 				error = got_worktree_status(worktree, &paths,
10733 				    repo, 0, check_local_changes, &have_changes,
10734 				    check_cancelled, NULL);
10735 				got_pathlist_free(&paths);
10736 				if (error) {
10737 					if (error->code != GOT_ERR_CANCELLED)
10738 						goto done;
10739 					if (sigint_received || sigpipe_received)
10740 						goto done;
10741 				}
10742 				if (have_changes) {
10743 					error = histedit_commit(NULL, worktree,
10744 					    fileindex, tmp_branch, hle, repo);
10745 					if (error)
10746 						goto done;
10747 				} else {
10748 					error = got_object_open_as_commit(
10749 					    &commit, repo, hle->commit_id);
10750 					if (error)
10751 						goto done;
10752 					error = show_histedit_progress(commit,
10753 					    hle, NULL);
10754 					got_object_commit_close(commit);
10755 					commit = NULL;
10756 					if (error)
10757 						goto done;
10758 				}
10759 			}
10760 			continue;
10761 		}
10762 
10763 		if (hle->cmd->code == GOT_HISTEDIT_DROP) {
10764 			error = histedit_skip_commit(hle, worktree, repo);
10765 			if (error)
10766 				goto done;
10767 			continue;
10768 		}
10769 
10770 		error = got_object_open_as_commit(&commit, repo,
10771 		    hle->commit_id);
10772 		if (error)
10773 			goto done;
10774 		parent_ids = got_object_commit_get_parent_ids(commit);
10775 		pid = STAILQ_FIRST(parent_ids);
10776 
10777 		error = got_worktree_histedit_merge_files(&merged_paths,
10778 		    worktree, fileindex, pid->id, hle->commit_id, repo,
10779 		    update_progress, &upa, check_cancelled, NULL);
10780 		if (error)
10781 			goto done;
10782 		got_object_commit_close(commit);
10783 		commit = NULL;
10784 
10785 		print_merge_progress_stats(&upa);
10786 		if (upa.conflicts > 0 || upa.missing > 0 ||
10787 		    upa.not_deleted > 0 || upa.unversioned > 0) {
10788 			if (upa.conflicts > 0) {
10789 				error = show_rebase_merge_conflict(
10790 				    hle->commit_id, repo);
10791 				if (error)
10792 					goto done;
10793 			}
10794 			got_worktree_rebase_pathlist_free(&merged_paths);
10795 			break;
10796 		}
10797 
10798 		if (hle->cmd->code == GOT_HISTEDIT_EDIT) {
10799 			char *id_str;
10800 			error = got_object_id_str(&id_str, hle->commit_id);
10801 			if (error)
10802 				goto done;
10803 			printf("Stopping histedit for amending commit %s\n",
10804 			    id_str);
10805 			free(id_str);
10806 			got_worktree_rebase_pathlist_free(&merged_paths);
10807 			error = got_worktree_histedit_postpone(worktree,
10808 			    fileindex);
10809 			goto done;
10810 		}
10811 
10812 		if (hle->cmd->code == GOT_HISTEDIT_FOLD) {
10813 			error = histedit_skip_commit(hle, worktree, repo);
10814 			if (error)
10815 				goto done;
10816 			continue;
10817 		}
10818 
10819 		error = histedit_commit(&merged_paths, worktree, fileindex,
10820 		    tmp_branch, hle, repo);
10821 		got_worktree_rebase_pathlist_free(&merged_paths);
10822 		if (error)
10823 			goto done;
10824 	}
10825 
10826 	if (upa.conflicts > 0 || upa.missing > 0 ||
10827 	    upa.not_deleted > 0 || upa.unversioned > 0) {
10828 		error = got_worktree_histedit_postpone(worktree, fileindex);
10829 		if (error)
10830 			goto done;
10831 		if (upa.conflicts > 0 && upa.missing == 0 &&
10832 		    upa.not_deleted == 0 && upa.unversioned == 0) {
10833 			error = got_error_msg(GOT_ERR_CONFLICTS,
10834 			    "conflicts must be resolved before histedit "
10835 			    "can continue");
10836 		} else if (upa.conflicts > 0) {
10837 			error = got_error_msg(GOT_ERR_CONFLICTS,
10838 			    "conflicts must be resolved before histedit "
10839 			    "can continue; changes destined for some "
10840 			    "files were not yet merged and should be "
10841 			    "merged manually if required before the "
10842 			    "histedit operation is continued");
10843 		} else {
10844 			error = got_error_msg(GOT_ERR_CONFLICTS,
10845 			    "changes destined for some files were not "
10846 			    "yet merged and should be merged manually "
10847 			    "if required before the histedit operation "
10848 			    "is continued");
10849 		}
10850 	} else
10851 		error = histedit_complete(worktree, fileindex, tmp_branch,
10852 		    branch, repo);
10853 done:
10854 	got_object_id_queue_free(&commits);
10855 	histedit_free_list(&histedit_cmds);
10856 	free(head_commit_id);
10857 	free(base_commit_id);
10858 	free(resume_commit_id);
10859 	if (commit)
10860 		got_object_commit_close(commit);
10861 	if (branch)
10862 		got_ref_close(branch);
10863 	if (tmp_branch)
10864 		got_ref_close(tmp_branch);
10865 	if (worktree)
10866 		got_worktree_close(worktree);
10867 	if (repo) {
10868 		const struct got_error *close_err = got_repo_close(repo);
10869 		if (error == NULL)
10870 			error = close_err;
10871 	}
10872 	return error;
10873 }
10874 
10875 __dead static void
10876 usage_integrate(void)
10877 {
10878 	fprintf(stderr, "usage: %s integrate branch\n", getprogname());
10879 	exit(1);
10880 }
10881 
10882 static const struct got_error *
10883 cmd_integrate(int argc, char *argv[])
10884 {
10885 	const struct got_error *error = NULL;
10886 	struct got_repository *repo = NULL;
10887 	struct got_worktree *worktree = NULL;
10888 	char *cwd = NULL, *refname = NULL, *base_refname = NULL;
10889 	const char *branch_arg = NULL;
10890 	struct got_reference *branch_ref = NULL, *base_branch_ref = NULL;
10891 	struct got_fileindex *fileindex = NULL;
10892 	struct got_object_id *commit_id = NULL, *base_commit_id = NULL;
10893 	int ch;
10894 	struct got_update_progress_arg upa;
10895 
10896 	while ((ch = getopt(argc, argv, "")) != -1) {
10897 		switch (ch) {
10898 		default:
10899 			usage_integrate();
10900 			/* NOTREACHED */
10901 		}
10902 	}
10903 
10904 	argc -= optind;
10905 	argv += optind;
10906 
10907 	if (argc != 1)
10908 		usage_integrate();
10909 	branch_arg = argv[0];
10910 #ifndef PROFILE
10911 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
10912 	    "unveil", NULL) == -1)
10913 		err(1, "pledge");
10914 #endif
10915 	cwd = getcwd(NULL, 0);
10916 	if (cwd == NULL) {
10917 		error = got_error_from_errno("getcwd");
10918 		goto done;
10919 	}
10920 
10921 	error = got_worktree_open(&worktree, cwd);
10922 	if (error) {
10923 		if (error->code == GOT_ERR_NOT_WORKTREE)
10924 			error = wrap_not_worktree_error(error, "integrate",
10925 			    cwd);
10926 		goto done;
10927 	}
10928 
10929 	error = check_rebase_or_histedit_in_progress(worktree);
10930 	if (error)
10931 		goto done;
10932 
10933 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
10934 	    NULL);
10935 	if (error != NULL)
10936 		goto done;
10937 
10938 	error = apply_unveil(got_repo_get_path(repo), 0,
10939 	    got_worktree_get_root_path(worktree));
10940 	if (error)
10941 		goto done;
10942 
10943 	error = check_merge_in_progress(worktree, repo);
10944 	if (error)
10945 		goto done;
10946 
10947 	if (asprintf(&refname, "refs/heads/%s", branch_arg) == -1) {
10948 		error = got_error_from_errno("asprintf");
10949 		goto done;
10950 	}
10951 
10952 	error = got_worktree_integrate_prepare(&fileindex, &branch_ref,
10953 	    &base_branch_ref, worktree, refname, repo);
10954 	if (error)
10955 		goto done;
10956 
10957 	refname = strdup(got_ref_get_name(branch_ref));
10958 	if (refname == NULL) {
10959 		error = got_error_from_errno("strdup");
10960 		got_worktree_integrate_abort(worktree, fileindex, repo,
10961 		    branch_ref, base_branch_ref);
10962 		goto done;
10963 	}
10964 	base_refname = strdup(got_ref_get_name(base_branch_ref));
10965 	if (base_refname == NULL) {
10966 		error = got_error_from_errno("strdup");
10967 		got_worktree_integrate_abort(worktree, fileindex, repo,
10968 		    branch_ref, base_branch_ref);
10969 		goto done;
10970 	}
10971 
10972 	error = got_ref_resolve(&commit_id, repo, branch_ref);
10973 	if (error)
10974 		goto done;
10975 
10976 	error = got_ref_resolve(&base_commit_id, repo, base_branch_ref);
10977 	if (error)
10978 		goto done;
10979 
10980 	if (got_object_id_cmp(commit_id, base_commit_id) == 0) {
10981 		error = got_error_msg(GOT_ERR_SAME_BRANCH,
10982 		    "specified branch has already been integrated");
10983 		got_worktree_integrate_abort(worktree, fileindex, repo,
10984 		    branch_ref, base_branch_ref);
10985 		goto done;
10986 	}
10987 
10988 	error = check_linear_ancestry(commit_id, base_commit_id, 1, repo);
10989 	if (error) {
10990 		if (error->code == GOT_ERR_ANCESTRY)
10991 			error = got_error(GOT_ERR_REBASE_REQUIRED);
10992 		got_worktree_integrate_abort(worktree, fileindex, repo,
10993 		    branch_ref, base_branch_ref);
10994 		goto done;
10995 	}
10996 
10997 	memset(&upa, 0, sizeof(upa));
10998 	error = got_worktree_integrate_continue(worktree, fileindex, repo,
10999 	    branch_ref, base_branch_ref, update_progress, &upa,
11000 	    check_cancelled, NULL);
11001 	if (error)
11002 		goto done;
11003 
11004 	printf("Integrated %s into %s\n", refname, base_refname);
11005 	print_update_progress_stats(&upa);
11006 done:
11007 	if (repo) {
11008 		const struct got_error *close_err = got_repo_close(repo);
11009 		if (error == NULL)
11010 			error = close_err;
11011 	}
11012 	if (worktree)
11013 		got_worktree_close(worktree);
11014 	free(cwd);
11015 	free(base_commit_id);
11016 	free(commit_id);
11017 	free(refname);
11018 	free(base_refname);
11019 	return error;
11020 }
11021 
11022 __dead static void
11023 usage_merge(void)
11024 {
11025 	fprintf(stderr, "usage: %s merge [-a] [-c] [-n] [branch]\n",
11026 	    getprogname());
11027 	exit(1);
11028 }
11029 
11030 static const struct got_error *
11031 cmd_merge(int argc, char *argv[])
11032 {
11033 	const struct got_error *error = NULL;
11034 	struct got_worktree *worktree = NULL;
11035 	struct got_repository *repo = NULL;
11036 	struct got_fileindex *fileindex = NULL;
11037 	char *cwd = NULL, *id_str = NULL, *author = NULL;
11038 	struct got_reference *branch = NULL, *wt_branch = NULL;
11039 	struct got_object_id *branch_tip = NULL, *yca_id = NULL;
11040 	struct got_object_id *wt_branch_tip = NULL;
11041 	int ch, merge_in_progress = 0, abort_merge = 0, continue_merge = 0;
11042 	int interrupt_merge = 0;
11043 	struct got_update_progress_arg upa;
11044 	struct got_object_id *merge_commit_id = NULL;
11045 	char *branch_name = NULL;
11046 
11047 	memset(&upa, 0, sizeof(upa));
11048 
11049 	while ((ch = getopt(argc, argv, "acn")) != -1) {
11050 		switch (ch) {
11051 		case 'a':
11052 			abort_merge = 1;
11053 			break;
11054 		case 'c':
11055 			continue_merge = 1;
11056 			break;
11057 		case 'n':
11058 			interrupt_merge = 1;
11059 			break;
11060 		default:
11061 			usage_rebase();
11062 			/* NOTREACHED */
11063 		}
11064 	}
11065 
11066 	argc -= optind;
11067 	argv += optind;
11068 
11069 #ifndef PROFILE
11070 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
11071 	    "unveil", NULL) == -1)
11072 		err(1, "pledge");
11073 #endif
11074 
11075 	if (abort_merge && continue_merge)
11076 		option_conflict('a', 'c');
11077 	if (abort_merge || continue_merge) {
11078 		if (argc != 0)
11079 			usage_merge();
11080 	} else if (argc != 1)
11081 		usage_merge();
11082 
11083 	cwd = getcwd(NULL, 0);
11084 	if (cwd == NULL) {
11085 		error = got_error_from_errno("getcwd");
11086 		goto done;
11087 	}
11088 
11089 	error = got_worktree_open(&worktree, cwd);
11090 	if (error) {
11091 		if (error->code == GOT_ERR_NOT_WORKTREE)
11092 			error = wrap_not_worktree_error(error,
11093 			    "merge", cwd);
11094 		goto done;
11095 	}
11096 
11097 	error = got_repo_open(&repo,
11098 	    worktree ? got_worktree_get_repo_path(worktree) : cwd, NULL);
11099 	if (error != NULL)
11100 		goto done;
11101 
11102 	error = apply_unveil(got_repo_get_path(repo), 0,
11103 	    worktree ? got_worktree_get_root_path(worktree) : NULL);
11104 	if (error)
11105 		goto done;
11106 
11107 	error = check_rebase_or_histedit_in_progress(worktree);
11108 	if (error)
11109 		goto done;
11110 
11111 	error = got_worktree_merge_in_progress(&merge_in_progress, worktree,
11112 	    repo);
11113 	if (error)
11114 		goto done;
11115 
11116 	if (abort_merge) {
11117 		if (!merge_in_progress) {
11118 			error = got_error(GOT_ERR_NOT_MERGING);
11119 			goto done;
11120 		}
11121 		error = got_worktree_merge_continue(&branch_name,
11122 		    &branch_tip, &fileindex, worktree, repo);
11123 		if (error)
11124 			goto done;
11125 		error = got_worktree_merge_abort(worktree, fileindex, repo,
11126 		    abort_progress, &upa);
11127 		if (error)
11128 			goto done;
11129 		printf("Merge of %s aborted\n", branch_name);
11130 		goto done; /* nothing else to do */
11131 	}
11132 
11133 	error = get_author(&author, repo, worktree);
11134 	if (error)
11135 		goto done;
11136 
11137 	if (continue_merge) {
11138 		if (!merge_in_progress) {
11139 			error = got_error(GOT_ERR_NOT_MERGING);
11140 			goto done;
11141 		}
11142 		error = got_worktree_merge_continue(&branch_name,
11143 		    &branch_tip, &fileindex, worktree, repo);
11144 		if (error)
11145 			goto done;
11146 	} else {
11147 		error = got_ref_open(&branch, repo, argv[0], 0);
11148 		if (error != NULL)
11149 			goto done;
11150 		branch_name = strdup(got_ref_get_name(branch));
11151 		if (branch_name == NULL) {
11152 			error = got_error_from_errno("strdup");
11153 			goto done;
11154 		}
11155 		error = got_ref_resolve(&branch_tip, repo, branch);
11156 		if (error)
11157 			goto done;
11158 	}
11159 
11160 	error = got_ref_open(&wt_branch, repo,
11161 	    got_worktree_get_head_ref_name(worktree), 0);
11162 	if (error)
11163 		goto done;
11164 	error = got_ref_resolve(&wt_branch_tip, repo, wt_branch);
11165 	if (error)
11166 		goto done;
11167 	error = got_commit_graph_find_youngest_common_ancestor(&yca_id,
11168 	    wt_branch_tip, branch_tip, 0, repo,
11169 	    check_cancelled, NULL);
11170 	if (error && error->code != GOT_ERR_ANCESTRY)
11171 		goto done;
11172 
11173 	if (!continue_merge) {
11174 		error = check_path_prefix(wt_branch_tip, branch_tip,
11175 		    got_worktree_get_path_prefix(worktree),
11176 		    GOT_ERR_MERGE_PATH, repo);
11177 		if (error)
11178 			goto done;
11179 		if (yca_id) {
11180 			error = check_same_branch(wt_branch_tip, branch,
11181 			    yca_id, repo);
11182 			if (error) {
11183 				if (error->code != GOT_ERR_ANCESTRY)
11184 					goto done;
11185 				error = NULL;
11186 			} else {
11187 				static char msg[512];
11188 				snprintf(msg, sizeof(msg),
11189 				    "cannot create a merge commit because "
11190 				    "%s is based on %s; %s can be integrated "
11191 				    "with 'got integrate' instead", branch_name,
11192 				    got_worktree_get_head_ref_name(worktree),
11193 				    branch_name);
11194 				error = got_error_msg(GOT_ERR_SAME_BRANCH, msg);
11195 				goto done;
11196 			}
11197 		}
11198 		error = got_worktree_merge_prepare(&fileindex, worktree,
11199 		    branch, repo);
11200 		if (error)
11201 			goto done;
11202 
11203 		error = got_worktree_merge_branch(worktree, fileindex,
11204 		    yca_id, branch_tip, repo, update_progress, &upa,
11205 		    check_cancelled, NULL);
11206 		if (error)
11207 			goto done;
11208 		print_merge_progress_stats(&upa);
11209 		if (!upa.did_something) {
11210 			error = got_worktree_merge_abort(worktree, fileindex,
11211 			    repo, abort_progress, &upa);
11212 			if (error)
11213 				goto done;
11214 			printf("Already up-to-date\n");
11215 			goto done;
11216 		}
11217 	}
11218 
11219 	if (interrupt_merge) {
11220 		error = got_worktree_merge_postpone(worktree, fileindex);
11221 		if (error)
11222 			goto done;
11223 		printf("Merge of %s interrupted on request\n", branch_name);
11224 	} else if (upa.conflicts > 0 || upa.missing > 0 ||
11225 	    upa.not_deleted > 0 || upa.unversioned > 0) {
11226 		error = got_worktree_merge_postpone(worktree, fileindex);
11227 		if (error)
11228 			goto done;
11229 		if (upa.conflicts > 0 && upa.missing == 0 &&
11230 		    upa.not_deleted == 0 && upa.unversioned == 0) {
11231 			error = got_error_msg(GOT_ERR_CONFLICTS,
11232 			    "conflicts must be resolved before merging "
11233 			    "can continue");
11234 		} else if (upa.conflicts > 0) {
11235 			error = got_error_msg(GOT_ERR_CONFLICTS,
11236 			    "conflicts must be resolved before merging "
11237 			    "can continue; changes destined for some "
11238 			    "files were not yet merged and "
11239 			    "should be merged manually if required before the "
11240 			    "merge operation is continued");
11241 		} else {
11242 			error = got_error_msg(GOT_ERR_CONFLICTS,
11243 			    "changes destined for some "
11244 			    "files were not yet merged and should be "
11245 			    "merged manually if required before the "
11246 			    "merge operation is continued");
11247 		}
11248 		goto done;
11249 	} else {
11250 		error = got_worktree_merge_commit(&merge_commit_id, worktree,
11251 		    fileindex, author, NULL, 1, branch_tip, branch_name,
11252 		    repo, continue_merge ? print_status : NULL, NULL);
11253 		if (error)
11254 			goto done;
11255 		error = got_worktree_merge_complete(worktree, fileindex, repo);
11256 		if (error)
11257 			goto done;
11258 		error = got_object_id_str(&id_str, merge_commit_id);
11259 		if (error)
11260 			goto done;
11261 		printf("Merged %s into %s: %s\n", branch_name,
11262 		    got_worktree_get_head_ref_name(worktree),
11263 		    id_str);
11264 
11265 	}
11266 done:
11267 	free(id_str);
11268 	free(merge_commit_id);
11269 	free(author);
11270 	free(branch_tip);
11271 	free(branch_name);
11272 	free(yca_id);
11273 	if (branch)
11274 		got_ref_close(branch);
11275 	if (wt_branch)
11276 		got_ref_close(wt_branch);
11277 	if (worktree)
11278 		got_worktree_close(worktree);
11279 	if (repo) {
11280 		const struct got_error *close_err = got_repo_close(repo);
11281 		if (error == NULL)
11282 			error = close_err;
11283 	}
11284 	return error;
11285 }
11286 
11287 __dead static void
11288 usage_stage(void)
11289 {
11290 	fprintf(stderr, "usage: %s stage [-l] | [-p] [-F response-script] "
11291 	    "[-S] [file-path ...]\n",
11292 	    getprogname());
11293 	exit(1);
11294 }
11295 
11296 static const struct got_error *
11297 print_stage(void *arg, unsigned char status, unsigned char staged_status,
11298     const char *path, struct got_object_id *blob_id,
11299     struct got_object_id *staged_blob_id, struct got_object_id *commit_id,
11300     int dirfd, const char *de_name)
11301 {
11302 	const struct got_error *err = NULL;
11303 	char *id_str = NULL;
11304 
11305 	if (staged_status != GOT_STATUS_ADD &&
11306 	    staged_status != GOT_STATUS_MODIFY &&
11307 	    staged_status != GOT_STATUS_DELETE)
11308 		return NULL;
11309 
11310 	if (staged_status == GOT_STATUS_ADD ||
11311 	    staged_status == GOT_STATUS_MODIFY)
11312 		err = got_object_id_str(&id_str, staged_blob_id);
11313 	else
11314 		err = got_object_id_str(&id_str, blob_id);
11315 	if (err)
11316 		return err;
11317 
11318 	printf("%s %c %s\n", id_str, staged_status, path);
11319 	free(id_str);
11320 	return NULL;
11321 }
11322 
11323 static const struct got_error *
11324 cmd_stage(int argc, char *argv[])
11325 {
11326 	const struct got_error *error = NULL;
11327 	struct got_repository *repo = NULL;
11328 	struct got_worktree *worktree = NULL;
11329 	char *cwd = NULL;
11330 	struct got_pathlist_head paths;
11331 	struct got_pathlist_entry *pe;
11332 	int ch, list_stage = 0, pflag = 0, allow_bad_symlinks = 0;
11333 	FILE *patch_script_file = NULL;
11334 	const char *patch_script_path = NULL;
11335 	struct choose_patch_arg cpa;
11336 
11337 	TAILQ_INIT(&paths);
11338 
11339 	while ((ch = getopt(argc, argv, "lpF:S")) != -1) {
11340 		switch (ch) {
11341 		case 'l':
11342 			list_stage = 1;
11343 			break;
11344 		case 'p':
11345 			pflag = 1;
11346 			break;
11347 		case 'F':
11348 			patch_script_path = optarg;
11349 			break;
11350 		case 'S':
11351 			allow_bad_symlinks = 1;
11352 			break;
11353 		default:
11354 			usage_stage();
11355 			/* NOTREACHED */
11356 		}
11357 	}
11358 
11359 	argc -= optind;
11360 	argv += optind;
11361 
11362 #ifndef PROFILE
11363 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
11364 	    "unveil", NULL) == -1)
11365 		err(1, "pledge");
11366 #endif
11367 	if (list_stage && (pflag || patch_script_path))
11368 		errx(1, "-l option cannot be used with other options");
11369 	if (patch_script_path && !pflag)
11370 		errx(1, "-F option can only be used together with -p option");
11371 
11372 	cwd = getcwd(NULL, 0);
11373 	if (cwd == NULL) {
11374 		error = got_error_from_errno("getcwd");
11375 		goto done;
11376 	}
11377 
11378 	error = got_worktree_open(&worktree, cwd);
11379 	if (error) {
11380 		if (error->code == GOT_ERR_NOT_WORKTREE)
11381 			error = wrap_not_worktree_error(error, "stage", cwd);
11382 		goto done;
11383 	}
11384 
11385 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
11386 	    NULL);
11387 	if (error != NULL)
11388 		goto done;
11389 
11390 	if (patch_script_path) {
11391 		patch_script_file = fopen(patch_script_path, "re");
11392 		if (patch_script_file == NULL) {
11393 			error = got_error_from_errno2("fopen",
11394 			    patch_script_path);
11395 			goto done;
11396 		}
11397 	}
11398 	error = apply_unveil(got_repo_get_path(repo), 0,
11399 	    got_worktree_get_root_path(worktree));
11400 	if (error)
11401 		goto done;
11402 
11403 	error = check_merge_in_progress(worktree, repo);
11404 	if (error)
11405 		goto done;
11406 
11407 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
11408 	if (error)
11409 		goto done;
11410 
11411 	if (list_stage)
11412 		error = got_worktree_status(worktree, &paths, repo, 0,
11413 		    print_stage, NULL, check_cancelled, NULL);
11414 	else {
11415 		cpa.patch_script_file = patch_script_file;
11416 		cpa.action = "stage";
11417 		error = got_worktree_stage(worktree, &paths,
11418 		    pflag ? NULL : print_status, NULL,
11419 		    pflag ? choose_patch : NULL, &cpa,
11420 		    allow_bad_symlinks, repo);
11421 	}
11422 done:
11423 	if (patch_script_file && fclose(patch_script_file) == EOF &&
11424 	    error == NULL)
11425 		error = got_error_from_errno2("fclose", patch_script_path);
11426 	if (repo) {
11427 		const struct got_error *close_err = got_repo_close(repo);
11428 		if (error == NULL)
11429 			error = close_err;
11430 	}
11431 	if (worktree)
11432 		got_worktree_close(worktree);
11433 	TAILQ_FOREACH(pe, &paths, entry)
11434 		free((char *)pe->path);
11435 	got_pathlist_free(&paths);
11436 	free(cwd);
11437 	return error;
11438 }
11439 
11440 __dead static void
11441 usage_unstage(void)
11442 {
11443 	fprintf(stderr, "usage: %s unstage [-p] [-F response-script] "
11444 	    "[file-path ...]\n",
11445 	    getprogname());
11446 	exit(1);
11447 }
11448 
11449 
11450 static const struct got_error *
11451 cmd_unstage(int argc, char *argv[])
11452 {
11453 	const struct got_error *error = NULL;
11454 	struct got_repository *repo = NULL;
11455 	struct got_worktree *worktree = NULL;
11456 	char *cwd = NULL;
11457 	struct got_pathlist_head paths;
11458 	struct got_pathlist_entry *pe;
11459 	int ch, pflag = 0;
11460 	struct got_update_progress_arg upa;
11461 	FILE *patch_script_file = NULL;
11462 	const char *patch_script_path = NULL;
11463 	struct choose_patch_arg cpa;
11464 
11465 	TAILQ_INIT(&paths);
11466 
11467 	while ((ch = getopt(argc, argv, "pF:")) != -1) {
11468 		switch (ch) {
11469 		case 'p':
11470 			pflag = 1;
11471 			break;
11472 		case 'F':
11473 			patch_script_path = optarg;
11474 			break;
11475 		default:
11476 			usage_unstage();
11477 			/* NOTREACHED */
11478 		}
11479 	}
11480 
11481 	argc -= optind;
11482 	argv += optind;
11483 
11484 #ifndef PROFILE
11485 	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
11486 	    "unveil", NULL) == -1)
11487 		err(1, "pledge");
11488 #endif
11489 	if (patch_script_path && !pflag)
11490 		errx(1, "-F option can only be used together with -p option");
11491 
11492 	cwd = getcwd(NULL, 0);
11493 	if (cwd == NULL) {
11494 		error = got_error_from_errno("getcwd");
11495 		goto done;
11496 	}
11497 
11498 	error = got_worktree_open(&worktree, cwd);
11499 	if (error) {
11500 		if (error->code == GOT_ERR_NOT_WORKTREE)
11501 			error = wrap_not_worktree_error(error, "unstage", cwd);
11502 		goto done;
11503 	}
11504 
11505 	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
11506 	    NULL);
11507 	if (error != NULL)
11508 		goto done;
11509 
11510 	if (patch_script_path) {
11511 		patch_script_file = fopen(patch_script_path, "re");
11512 		if (patch_script_file == NULL) {
11513 			error = got_error_from_errno2("fopen",
11514 			    patch_script_path);
11515 			goto done;
11516 		}
11517 	}
11518 
11519 	error = apply_unveil(got_repo_get_path(repo), 0,
11520 	    got_worktree_get_root_path(worktree));
11521 	if (error)
11522 		goto done;
11523 
11524 	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
11525 	if (error)
11526 		goto done;
11527 
11528 	cpa.patch_script_file = patch_script_file;
11529 	cpa.action = "unstage";
11530 	memset(&upa, 0, sizeof(upa));
11531 	error = got_worktree_unstage(worktree, &paths, update_progress,
11532 	    &upa, pflag ? choose_patch : NULL, &cpa, repo);
11533 	if (!error)
11534 		print_merge_progress_stats(&upa);
11535 done:
11536 	if (patch_script_file && fclose(patch_script_file) == EOF &&
11537 	    error == NULL)
11538 		error = got_error_from_errno2("fclose", patch_script_path);
11539 	if (repo) {
11540 		const struct got_error *close_err = got_repo_close(repo);
11541 		if (error == NULL)
11542 			error = close_err;
11543 	}
11544 	if (worktree)
11545 		got_worktree_close(worktree);
11546 	TAILQ_FOREACH(pe, &paths, entry)
11547 		free((char *)pe->path);
11548 	got_pathlist_free(&paths);
11549 	free(cwd);
11550 	return error;
11551 }
11552 
11553 __dead static void
11554 usage_cat(void)
11555 {
11556 	fprintf(stderr, "usage: %s cat [-r repository ] [ -c commit ] [ -P ] "
11557 	    "arg1 [arg2 ...]\n", getprogname());
11558 	exit(1);
11559 }
11560 
11561 static const struct got_error *
11562 cat_blob(struct got_object_id *id, struct got_repository *repo, FILE *outfile)
11563 {
11564 	const struct got_error *err;
11565 	struct got_blob_object *blob;
11566 
11567 	err = got_object_open_as_blob(&blob, repo, id, 8192);
11568 	if (err)
11569 		return err;
11570 
11571 	err = got_object_blob_dump_to_file(NULL, NULL, NULL, outfile, blob);
11572 	got_object_blob_close(blob);
11573 	return err;
11574 }
11575 
11576 static const struct got_error *
11577 cat_tree(struct got_object_id *id, struct got_repository *repo, FILE *outfile)
11578 {
11579 	const struct got_error *err;
11580 	struct got_tree_object *tree;
11581 	int nentries, i;
11582 
11583 	err = got_object_open_as_tree(&tree, repo, id);
11584 	if (err)
11585 		return err;
11586 
11587 	nentries = got_object_tree_get_nentries(tree);
11588 	for (i = 0; i < nentries; i++) {
11589 		struct got_tree_entry *te;
11590 		char *id_str;
11591 		if (sigint_received || sigpipe_received)
11592 			break;
11593 		te = got_object_tree_get_entry(tree, i);
11594 		err = got_object_id_str(&id_str, got_tree_entry_get_id(te));
11595 		if (err)
11596 			break;
11597 		fprintf(outfile, "%s %.7o %s\n", id_str,
11598 		    got_tree_entry_get_mode(te),
11599 		    got_tree_entry_get_name(te));
11600 		free(id_str);
11601 	}
11602 
11603 	got_object_tree_close(tree);
11604 	return err;
11605 }
11606 
11607 static void
11608 format_gmtoff(char *buf, size_t sz, time_t gmtoff)
11609 {
11610 	long long h, m;
11611 	char sign = '+';
11612 
11613 	if (gmtoff < 0) {
11614 		sign = '-';
11615 		gmtoff = -gmtoff;
11616 	}
11617 
11618 	h = (long long)gmtoff / 3600;
11619 	m = ((long long)gmtoff - h*3600) / 60;
11620 	snprintf(buf, sz, "%c%02lld%02lld", sign, h, m);
11621 }
11622 
11623 static const struct got_error *
11624 cat_commit(struct got_object_id *id, struct got_repository *repo, FILE *outfile)
11625 {
11626 	const struct got_error *err;
11627 	struct got_commit_object *commit;
11628 	const struct got_object_id_queue *parent_ids;
11629 	struct got_object_qid *pid;
11630 	char *id_str = NULL;
11631 	const char *logmsg = NULL;
11632 	char gmtoff[6];
11633 
11634 	err = got_object_open_as_commit(&commit, repo, id);
11635 	if (err)
11636 		return err;
11637 
11638 	err = got_object_id_str(&id_str, got_object_commit_get_tree_id(commit));
11639 	if (err)
11640 		goto done;
11641 
11642 	fprintf(outfile, "%s%s\n", GOT_COMMIT_LABEL_TREE, id_str);
11643 	parent_ids = got_object_commit_get_parent_ids(commit);
11644 	fprintf(outfile, "numparents %d\n",
11645 	    got_object_commit_get_nparents(commit));
11646 	STAILQ_FOREACH(pid, parent_ids, entry) {
11647 		char *pid_str;
11648 		err = got_object_id_str(&pid_str, pid->id);
11649 		if (err)
11650 			goto done;
11651 		fprintf(outfile, "%s%s\n", GOT_COMMIT_LABEL_PARENT, pid_str);
11652 		free(pid_str);
11653 	}
11654 	format_gmtoff(gmtoff, sizeof(gmtoff),
11655 	    got_object_commit_get_author_gmtoff(commit));
11656 	fprintf(outfile, "%s%s %lld %s\n", GOT_COMMIT_LABEL_AUTHOR,
11657 	    got_object_commit_get_author(commit),
11658 	    (long long)got_object_commit_get_author_time(commit),
11659 	    gmtoff);
11660 
11661 	format_gmtoff(gmtoff, sizeof(gmtoff),
11662 	    got_object_commit_get_committer_gmtoff(commit));
11663 	fprintf(outfile, "%s%s %lld %s\n", GOT_COMMIT_LABEL_COMMITTER,
11664 	    got_object_commit_get_author(commit),
11665 	    (long long)got_object_commit_get_committer_time(commit),
11666 	    gmtoff);
11667 
11668 	logmsg = got_object_commit_get_logmsg_raw(commit);
11669 	fprintf(outfile, "messagelen %zd\n", strlen(logmsg));
11670 	fprintf(outfile, "%s", logmsg);
11671 done:
11672 	free(id_str);
11673 	got_object_commit_close(commit);
11674 	return err;
11675 }
11676 
11677 static const struct got_error *
11678 cat_tag(struct got_object_id *id, struct got_repository *repo, FILE *outfile)
11679 {
11680 	const struct got_error *err;
11681 	struct got_tag_object *tag;
11682 	char *id_str = NULL;
11683 	const char *tagmsg = NULL;
11684 	char gmtoff[6];
11685 
11686 	err = got_object_open_as_tag(&tag, repo, id);
11687 	if (err)
11688 		return err;
11689 
11690 	err = got_object_id_str(&id_str, got_object_tag_get_object_id(tag));
11691 	if (err)
11692 		goto done;
11693 
11694 	fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_OBJECT, id_str);
11695 
11696 	switch (got_object_tag_get_object_type(tag)) {
11697 	case GOT_OBJ_TYPE_BLOB:
11698 		fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_TYPE,
11699 		    GOT_OBJ_LABEL_BLOB);
11700 		break;
11701 	case GOT_OBJ_TYPE_TREE:
11702 		fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_TYPE,
11703 		    GOT_OBJ_LABEL_TREE);
11704 		break;
11705 	case GOT_OBJ_TYPE_COMMIT:
11706 		fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_TYPE,
11707 		    GOT_OBJ_LABEL_COMMIT);
11708 		break;
11709 	case GOT_OBJ_TYPE_TAG:
11710 		fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_TYPE,
11711 		    GOT_OBJ_LABEL_TAG);
11712 		break;
11713 	default:
11714 		break;
11715 	}
11716 
11717 	fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_TAG,
11718 	    got_object_tag_get_name(tag));
11719 
11720 	format_gmtoff(gmtoff, sizeof(gmtoff),
11721 	    got_object_tag_get_tagger_gmtoff(tag));
11722 	fprintf(outfile, "%s%s %lld %s\n", GOT_TAG_LABEL_TAGGER,
11723 	    got_object_tag_get_tagger(tag),
11724 	    (long long)got_object_tag_get_tagger_time(tag),
11725 	    gmtoff);
11726 
11727 	tagmsg = got_object_tag_get_message(tag);
11728 	fprintf(outfile, "messagelen %zd\n", strlen(tagmsg));
11729 	fprintf(outfile, "%s", tagmsg);
11730 done:
11731 	free(id_str);
11732 	got_object_tag_close(tag);
11733 	return err;
11734 }
11735 
11736 static const struct got_error *
11737 cmd_cat(int argc, char *argv[])
11738 {
11739 	const struct got_error *error;
11740 	struct got_repository *repo = NULL;
11741 	struct got_worktree *worktree = NULL;
11742 	char *cwd = NULL, *repo_path = NULL, *label = NULL;
11743 	const char *commit_id_str = NULL;
11744 	struct got_object_id *id = NULL, *commit_id = NULL;
11745 	int ch, obj_type, i, force_path = 0;
11746 	struct got_reflist_head refs;
11747 
11748 	TAILQ_INIT(&refs);
11749 
11750 #ifndef PROFILE
11751 	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
11752 	    NULL) == -1)
11753 		err(1, "pledge");
11754 #endif
11755 
11756 	while ((ch = getopt(argc, argv, "c:r:P")) != -1) {
11757 		switch (ch) {
11758 		case 'c':
11759 			commit_id_str = optarg;
11760 			break;
11761 		case 'r':
11762 			repo_path = realpath(optarg, NULL);
11763 			if (repo_path == NULL)
11764 				return got_error_from_errno2("realpath",
11765 				    optarg);
11766 			got_path_strip_trailing_slashes(repo_path);
11767 			break;
11768 		case 'P':
11769 			force_path = 1;
11770 			break;
11771 		default:
11772 			usage_cat();
11773 			/* NOTREACHED */
11774 		}
11775 	}
11776 
11777 	argc -= optind;
11778 	argv += optind;
11779 
11780 	cwd = getcwd(NULL, 0);
11781 	if (cwd == NULL) {
11782 		error = got_error_from_errno("getcwd");
11783 		goto done;
11784 	}
11785 	error = got_worktree_open(&worktree, cwd);
11786 	if (error && error->code != GOT_ERR_NOT_WORKTREE)
11787 		goto done;
11788 	if (worktree) {
11789 		if (repo_path == NULL) {
11790 			repo_path = strdup(
11791 			    got_worktree_get_repo_path(worktree));
11792 			if (repo_path == NULL) {
11793 				error = got_error_from_errno("strdup");
11794 				goto done;
11795 			}
11796 		}
11797 
11798 		/* Release work tree lock. */
11799 		got_worktree_close(worktree);
11800 		worktree = NULL;
11801 	}
11802 
11803 	if (repo_path == NULL) {
11804 		repo_path = getcwd(NULL, 0);
11805 		if (repo_path == NULL)
11806 			return got_error_from_errno("getcwd");
11807 	}
11808 
11809 	error = got_repo_open(&repo, repo_path, NULL);
11810 	free(repo_path);
11811 	if (error != NULL)
11812 		goto done;
11813 
11814 	error = apply_unveil(got_repo_get_path(repo), 1, NULL);
11815 	if (error)
11816 		goto done;
11817 
11818 	error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name, NULL);
11819 	if (error)
11820 		goto done;
11821 
11822 	if (commit_id_str == NULL)
11823 		commit_id_str = GOT_REF_HEAD;
11824 	error = got_repo_match_object_id(&commit_id, NULL,
11825 	    commit_id_str, GOT_OBJ_TYPE_COMMIT, &refs, repo);
11826 	if (error)
11827 		goto done;
11828 
11829 	for (i = 0; i < argc; i++) {
11830 		if (force_path) {
11831 			error = got_object_id_by_path(&id, repo, commit_id,
11832 			    argv[i]);
11833 			if (error)
11834 				break;
11835 		} else {
11836 			error = got_repo_match_object_id(&id, &label, argv[i],
11837 			    GOT_OBJ_TYPE_ANY, NULL /* do not resolve tags */,
11838 			    repo);
11839 			if (error) {
11840 				if (error->code != GOT_ERR_BAD_OBJ_ID_STR &&
11841 				    error->code != GOT_ERR_NOT_REF)
11842 					break;
11843 				error = got_object_id_by_path(&id, repo,
11844 				    commit_id, argv[i]);
11845 				if (error)
11846 					break;
11847 			}
11848 		}
11849 
11850 		error = got_object_get_type(&obj_type, repo, id);
11851 		if (error)
11852 			break;
11853 
11854 		switch (obj_type) {
11855 		case GOT_OBJ_TYPE_BLOB:
11856 			error = cat_blob(id, repo, stdout);
11857 			break;
11858 		case GOT_OBJ_TYPE_TREE:
11859 			error = cat_tree(id, repo, stdout);
11860 			break;
11861 		case GOT_OBJ_TYPE_COMMIT:
11862 			error = cat_commit(id, repo, stdout);
11863 			break;
11864 		case GOT_OBJ_TYPE_TAG:
11865 			error = cat_tag(id, repo, stdout);
11866 			break;
11867 		default:
11868 			error = got_error(GOT_ERR_OBJ_TYPE);
11869 			break;
11870 		}
11871 		if (error)
11872 			break;
11873 		free(label);
11874 		label = NULL;
11875 		free(id);
11876 		id = NULL;
11877 	}
11878 done:
11879 	free(label);
11880 	free(id);
11881 	free(commit_id);
11882 	if (worktree)
11883 		got_worktree_close(worktree);
11884 	if (repo) {
11885 		const struct got_error *close_err = got_repo_close(repo);
11886 		if (error == NULL)
11887 			error = close_err;
11888 	}
11889 	got_ref_list_free(&refs);
11890 	return error;
11891 }
11892 
11893 __dead static void
11894 usage_info(void)
11895 {
11896 	fprintf(stderr, "usage: %s info [path ...]\n",
11897 	    getprogname());
11898 	exit(1);
11899 }
11900 
11901 static const struct got_error *
11902 print_path_info(void *arg, const char *path, mode_t mode, time_t mtime,
11903     struct got_object_id *blob_id, struct got_object_id *staged_blob_id,
11904     struct got_object_id *commit_id)
11905 {
11906 	const struct got_error *err = NULL;
11907 	char *id_str = NULL;
11908 	char datebuf[128];
11909 	struct tm mytm, *tm;
11910 	struct got_pathlist_head *paths = arg;
11911 	struct got_pathlist_entry *pe;
11912 
11913 	/*
11914 	 * Clear error indication from any of the path arguments which
11915 	 * would cause this file index entry to be displayed.
11916 	 */
11917 	TAILQ_FOREACH(pe, paths, entry) {
11918 		if (got_path_cmp(path, pe->path, strlen(path),
11919 		    pe->path_len) == 0 ||
11920 		    got_path_is_child(path, pe->path, pe->path_len))
11921 			pe->data = NULL; /* no error */
11922 	}
11923 
11924 	printf(GOT_COMMIT_SEP_STR);
11925 	if (S_ISLNK(mode))
11926 		printf("symlink: %s\n", path);
11927 	else if (S_ISREG(mode)) {
11928 		printf("file: %s\n", path);
11929 		printf("mode: %o\n", mode & (S_IRWXU | S_IRWXG | S_IRWXO));
11930 	} else if (S_ISDIR(mode))
11931 		printf("directory: %s\n", path);
11932 	else
11933 		printf("something: %s\n", path);
11934 
11935 	tm = localtime_r(&mtime, &mytm);
11936 	if (tm == NULL)
11937 		return NULL;
11938 	if (strftime(datebuf, sizeof(datebuf), "%c %Z", tm) == 0)
11939 		return got_error(GOT_ERR_NO_SPACE);
11940 	printf("timestamp: %s\n", datebuf);
11941 
11942 	if (blob_id) {
11943 		err = got_object_id_str(&id_str, blob_id);
11944 		if (err)
11945 			return err;
11946 		printf("based on blob: %s\n", id_str);
11947 		free(id_str);
11948 	}
11949 
11950 	if (staged_blob_id) {
11951 		err = got_object_id_str(&id_str, staged_blob_id);
11952 		if (err)
11953 			return err;
11954 		printf("based on staged blob: %s\n", id_str);
11955 		free(id_str);
11956 	}
11957 
11958 	if (commit_id) {
11959 		err = got_object_id_str(&id_str, commit_id);
11960 		if (err)
11961 			return err;
11962 		printf("based on commit: %s\n", id_str);
11963 		free(id_str);
11964 	}
11965 
11966 	return NULL;
11967 }
11968 
11969 static const struct got_error *
11970 cmd_info(int argc, char *argv[])
11971 {
11972 	const struct got_error *error = NULL;
11973 	struct got_worktree *worktree = NULL;
11974 	char *cwd = NULL, *id_str = NULL;
11975 	struct got_pathlist_head paths;
11976 	struct got_pathlist_entry *pe;
11977 	char *uuidstr = NULL;
11978 	int ch, show_files = 0;
11979 
11980 	TAILQ_INIT(&paths);
11981 
11982 	while ((ch = getopt(argc, argv, "")) != -1) {
11983 		switch (ch) {
11984 		default:
11985 			usage_info();
11986 			/* NOTREACHED */
11987 		}
11988 	}
11989 
11990 	argc -= optind;
11991 	argv += optind;
11992 
11993 #ifndef PROFILE
11994 	if (pledge("stdio rpath wpath flock proc exec sendfd unveil",
11995 	    NULL) == -1)
11996 		err(1, "pledge");
11997 #endif
11998 	cwd = getcwd(NULL, 0);
11999 	if (cwd == NULL) {
12000 		error = got_error_from_errno("getcwd");
12001 		goto done;
12002 	}
12003 
12004 	error = got_worktree_open(&worktree, cwd);
12005 	if (error) {
12006 		if (error->code == GOT_ERR_NOT_WORKTREE)
12007 			error = wrap_not_worktree_error(error, "info", cwd);
12008 		goto done;
12009 	}
12010 
12011 	error = apply_unveil(NULL, 0, got_worktree_get_root_path(worktree));
12012 	if (error)
12013 		goto done;
12014 
12015 	if (argc >= 1) {
12016 		error = get_worktree_paths_from_argv(&paths, argc, argv,
12017 		    worktree);
12018 		if (error)
12019 			goto done;
12020 		show_files = 1;
12021 	}
12022 
12023 	error = got_object_id_str(&id_str,
12024 	    got_worktree_get_base_commit_id(worktree));
12025 	if (error)
12026 		goto done;
12027 
12028 	error = got_worktree_get_uuid(&uuidstr, worktree);
12029 	if (error)
12030 		goto done;
12031 
12032 	printf("work tree: %s\n", got_worktree_get_root_path(worktree));
12033 	printf("work tree base commit: %s\n", id_str);
12034 	printf("work tree path prefix: %s\n",
12035 	    got_worktree_get_path_prefix(worktree));
12036 	printf("work tree branch reference: %s\n",
12037 	    got_worktree_get_head_ref_name(worktree));
12038 	printf("work tree UUID: %s\n", uuidstr);
12039 	printf("repository: %s\n", got_worktree_get_repo_path(worktree));
12040 
12041 	if (show_files) {
12042 		struct got_pathlist_entry *pe;
12043 		TAILQ_FOREACH(pe, &paths, entry) {
12044 			if (pe->path_len == 0)
12045 				continue;
12046 			/*
12047 			 * Assume this path will fail. This will be corrected
12048 			 * in print_path_info() in case the path does suceeed.
12049 			 */
12050 			pe->data = (void *)got_error_path(pe->path,
12051 			    GOT_ERR_BAD_PATH);
12052 		}
12053 		error = got_worktree_path_info(worktree, &paths,
12054 		    print_path_info, &paths, check_cancelled, NULL);
12055 		if (error)
12056 			goto done;
12057 		TAILQ_FOREACH(pe, &paths, entry) {
12058 			if (pe->data != NULL) {
12059 				error = pe->data; /* bad path */
12060 				break;
12061 			}
12062 		}
12063 	}
12064 done:
12065 	TAILQ_FOREACH(pe, &paths, entry)
12066 		free((char *)pe->path);
12067 	got_pathlist_free(&paths);
12068 	free(cwd);
12069 	free(id_str);
12070 	free(uuidstr);
12071 	return error;
12072 }