1 /*
2  * Copyright (c) 2018, 2019, 2020 Stefan Sperling <stsp@openbsd.org>
3  *
4  * Permission to use, copy, modify, and distribute this software for any
5  * purpose with or without fee is hereby granted, provided that the above
6  * copyright notice and this permission notice appear in all copies.
7  *
8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15  */
16 
17 #include <sys/types.h>
18 #include <sys/uio.h>
19 #include <sys/socket.h>
20 #include <sys/stat.h>
21 #include <sys/mman.h>
22 #include <sys/resource.h>
23 
24 #include <ctype.h>
25 #include <fcntl.h>
26 #include <fnmatch.h>
27 #include <limits.h>
28 #include <dirent.h>
29 #include <stdlib.h>
30 #include <stdio.h>
31 #include <string.h>
32 #include <time.h>
33 #include <unistd.h>
34 #include <zlib.h>
35 #include <errno.h>
36 #include <libgen.h>
37 #include <stdint.h>
38 
39 #include "bloom.h"
40 
41 #include "got_error.h"
42 #include "got_reference.h"
43 #include "got_repository.h"
44 #include "got_path.h"
45 #include "got_cancel.h"
46 #include "got_object.h"
47 
48 #include "got_lib_delta.h"
49 #include "got_lib_inflate.h"
50 #include "got_lib_object.h"
51 #include "got_lib_object_parse.h"
52 #include "got_lib_object_create.h"
53 #include "got_lib_pack.h"
54 #include "got_lib_privsep.h"
55 #include "got_lib_sha1.h"
56 #include "got_lib_object_cache.h"
57 #include "got_lib_repository.h"
58 #include "got_lib_gotconfig.h"
59 
60 #ifndef nitems
61 #define nitems(_a) (sizeof(_a) / sizeof((_a)[0]))
62 #endif
63 
64 RB_PROTOTYPE(got_packidx_bloom_filter_tree, got_packidx_bloom_filter, entry,
65     got_packidx_bloom_filter_cmp);
66 
67 const char *
68 got_repo_get_path(struct got_repository *repo)
69 {
70 	return repo->path;
71 }
72 
73 const char *
74 got_repo_get_path_git_dir(struct got_repository *repo)
75 {
76 	return repo->path_git_dir;
77 }
78 
79 int
80 got_repo_get_fd(struct got_repository *repo)
81 {
82 	return repo->gitdir_fd;
83 }
84 
85 const char *
86 got_repo_get_gitconfig_author_name(struct got_repository *repo)
87 {
88 	return repo->gitconfig_author_name;
89 }
90 
91 const char *
92 got_repo_get_gitconfig_author_email(struct got_repository *repo)
93 {
94 	return repo->gitconfig_author_email;
95 }
96 
97 const char *
98 got_repo_get_global_gitconfig_author_name(struct got_repository *repo)
99 {
100 	return repo->global_gitconfig_author_name;
101 }
102 
103 const char *
104 got_repo_get_global_gitconfig_author_email(struct got_repository *repo)
105 {
106 	return repo->global_gitconfig_author_email;
107 }
108 
109 const char *
110 got_repo_get_gitconfig_owner(struct got_repository *repo)
111 {
112 	return repo->gitconfig_owner;
113 }
114 
115 void
116 got_repo_get_gitconfig_extensions(char ***extensions, int *nextensions,
117     struct got_repository *repo)
118 {
119 	*extensions = repo->extensions;
120 	*nextensions = repo->nextensions;
121 }
122 
123 int
124 got_repo_is_bare(struct got_repository *repo)
125 {
126 	return (strcmp(repo->path, repo->path_git_dir) == 0);
127 }
128 
129 static char *
130 get_path_git_child(struct got_repository *repo, const char *basename)
131 {
132 	char *path_child;
133 
134 	if (asprintf(&path_child, "%s/%s", repo->path_git_dir,
135 	    basename) == -1)
136 		return NULL;
137 
138 	return path_child;
139 }
140 
141 char *
142 got_repo_get_path_objects(struct got_repository *repo)
143 {
144 	return get_path_git_child(repo, GOT_OBJECTS_DIR);
145 }
146 
147 char *
148 got_repo_get_path_objects_pack(struct got_repository *repo)
149 {
150 	return get_path_git_child(repo, GOT_OBJECTS_PACK_DIR);
151 }
152 
153 char *
154 got_repo_get_path_refs(struct got_repository *repo)
155 {
156 	return get_path_git_child(repo, GOT_REFS_DIR);
157 }
158 
159 char *
160 got_repo_get_path_packed_refs(struct got_repository *repo)
161 {
162 	return get_path_git_child(repo, GOT_PACKED_REFS_FILE);
163 }
164 
165 static char *
166 get_path_head(struct got_repository *repo)
167 {
168 	return get_path_git_child(repo, GOT_HEAD_FILE);
169 }
170 
171 char *
172 got_repo_get_path_gitconfig(struct got_repository *repo)
173 {
174 	return get_path_git_child(repo, GOT_GITCONFIG);
175 }
176 
177 char *
178 got_repo_get_path_gotconfig(struct got_repository *repo)
179 {
180 	return get_path_git_child(repo, GOT_GOTCONFIG_FILENAME);
181 }
182 
183 const struct got_gotconfig *
184 got_repo_get_gotconfig(struct got_repository *repo)
185 {
186 	return repo->gotconfig;
187 }
188 
189 void
190 got_repo_get_gitconfig_remotes(int *nremotes,
191     const struct got_remote_repo **remotes, struct got_repository *repo)
192 {
193 	*nremotes = repo->ngitconfig_remotes;
194 	*remotes = repo->gitconfig_remotes;
195 }
196 
197 static int
198 is_git_repo(struct got_repository *repo)
199 {
200 	const char *path_git = got_repo_get_path_git_dir(repo);
201 	char *path_objects = got_repo_get_path_objects(repo);
202 	char *path_refs = got_repo_get_path_refs(repo);
203 	char *path_head = get_path_head(repo);
204 	int ret = 0;
205 	struct stat sb;
206 	struct got_reference *head_ref;
207 
208 	if (lstat(path_git, &sb) == -1)
209 		goto done;
210 	if (!S_ISDIR(sb.st_mode))
211 		goto done;
212 
213 	if (lstat(path_objects, &sb) == -1)
214 		goto done;
215 	if (!S_ISDIR(sb.st_mode))
216 		goto done;
217 
218 	if (lstat(path_refs, &sb) == -1)
219 		goto done;
220 	if (!S_ISDIR(sb.st_mode))
221 		goto done;
222 
223 	if (lstat(path_head, &sb) == -1)
224 		goto done;
225 	if (!S_ISREG(sb.st_mode))
226 		goto done;
227 
228 	/* Check if the HEAD reference can be opened. */
229 	if (got_ref_open(&head_ref, repo, GOT_REF_HEAD, 0) != NULL)
230 		goto done;
231 	got_ref_close(head_ref);
232 
233 	ret = 1;
234 done:
235 	free(path_objects);
236 	free(path_refs);
237 	free(path_head);
238 	return ret;
239 
240 }
241 
242 const struct got_error *
243 got_repo_cache_object(struct got_repository *repo, struct got_object_id *id,
244     struct got_object *obj)
245 {
246 #ifndef GOT_NO_OBJ_CACHE
247 	const struct got_error *err = NULL;
248 	err = got_object_cache_add(&repo->objcache, id, obj);
249 	if (err) {
250 		if (err->code == GOT_ERR_OBJ_EXISTS ||
251 		    err->code == GOT_ERR_OBJ_TOO_LARGE)
252 			err = NULL;
253 		return err;
254 	}
255 	obj->refcnt++;
256 #endif
257 	return NULL;
258 }
259 
260 struct got_object *
261 got_repo_get_cached_object(struct got_repository *repo,
262     struct got_object_id *id)
263 {
264 	return (struct got_object *)got_object_cache_get(&repo->objcache, id);
265 }
266 
267 const struct got_error *
268 got_repo_cache_tree(struct got_repository *repo, struct got_object_id *id,
269     struct got_tree_object *tree)
270 {
271 #ifndef GOT_NO_OBJ_CACHE
272 	const struct got_error *err = NULL;
273 	err = got_object_cache_add(&repo->treecache, id, tree);
274 	if (err) {
275 		if (err->code == GOT_ERR_OBJ_EXISTS ||
276 		    err->code == GOT_ERR_OBJ_TOO_LARGE)
277 			err = NULL;
278 		return err;
279 	}
280 	tree->refcnt++;
281 #endif
282 	return NULL;
283 }
284 
285 struct got_tree_object *
286 got_repo_get_cached_tree(struct got_repository *repo,
287     struct got_object_id *id)
288 {
289 	return (struct got_tree_object *)got_object_cache_get(
290 	    &repo->treecache, id);
291 }
292 
293 const struct got_error *
294 got_repo_cache_commit(struct got_repository *repo, struct got_object_id *id,
295     struct got_commit_object *commit)
296 {
297 #ifndef GOT_NO_OBJ_CACHE
298 	const struct got_error *err = NULL;
299 	err = got_object_cache_add(&repo->commitcache, id, commit);
300 	if (err) {
301 		if (err->code == GOT_ERR_OBJ_EXISTS ||
302 		    err->code == GOT_ERR_OBJ_TOO_LARGE)
303 			err = NULL;
304 		return err;
305 	}
306 	commit->refcnt++;
307 #endif
308 	return NULL;
309 }
310 
311 struct got_commit_object *
312 got_repo_get_cached_commit(struct got_repository *repo,
313     struct got_object_id *id)
314 {
315 	return (struct got_commit_object *)got_object_cache_get(
316 	    &repo->commitcache, id);
317 }
318 
319 const struct got_error *
320 got_repo_cache_tag(struct got_repository *repo, struct got_object_id *id,
321     struct got_tag_object *tag)
322 {
323 #ifndef GOT_NO_OBJ_CACHE
324 	const struct got_error *err = NULL;
325 	err = got_object_cache_add(&repo->tagcache, id, tag);
326 	if (err) {
327 		if (err->code == GOT_ERR_OBJ_EXISTS ||
328 		    err->code == GOT_ERR_OBJ_TOO_LARGE)
329 			err = NULL;
330 		return err;
331 	}
332 	tag->refcnt++;
333 #endif
334 	return NULL;
335 }
336 
337 struct got_tag_object *
338 got_repo_get_cached_tag(struct got_repository *repo, struct got_object_id *id)
339 {
340 	return (struct got_tag_object *)got_object_cache_get(
341 	    &repo->tagcache, id);
342 }
343 
344 const struct got_error *
345 got_repo_cache_raw_object(struct got_repository *repo, struct got_object_id *id,
346     struct got_raw_object *raw)
347 {
348 #ifndef GOT_NO_OBJ_CACHE
349 	const struct got_error *err = NULL;
350 	err = got_object_cache_add(&repo->rawcache, id, raw);
351 	if (err) {
352 		if (err->code == GOT_ERR_OBJ_EXISTS ||
353 		    err->code == GOT_ERR_OBJ_TOO_LARGE)
354 			err = NULL;
355 		return err;
356 	}
357 	raw->refcnt++;
358 #endif
359 	return NULL;
360 }
361 
362 
363 struct got_raw_object *
364 got_repo_get_cached_raw_object(struct got_repository *repo,
365     struct got_object_id *id)
366 {
367 	return (struct got_raw_object *)got_object_cache_get(&repo->rawcache, id);
368 }
369 
370 
371 static const struct got_error *
372 open_repo(struct got_repository *repo, const char *path)
373 {
374 	const struct got_error *err = NULL;
375 
376 	repo->gitdir_fd = -1;
377 
378 	/* bare git repository? */
379 	repo->path_git_dir = strdup(path);
380 	if (repo->path_git_dir == NULL)
381 		return got_error_from_errno("strdup");
382 	if (is_git_repo(repo)) {
383 		repo->path = strdup(repo->path_git_dir);
384 		if (repo->path == NULL) {
385 			err = got_error_from_errno("strdup");
386 			goto done;
387 		}
388 		repo->gitdir_fd = open(repo->path_git_dir,
389 		    O_DIRECTORY | O_CLOEXEC);
390 		if (repo->gitdir_fd == -1) {
391 			err = got_error_from_errno2("open",
392 			    repo->path_git_dir);
393 			goto done;
394 		}
395 		return NULL;
396 	}
397 
398 	/* git repository with working tree? */
399 	free(repo->path_git_dir);
400 	repo->path_git_dir = NULL;
401 	if (asprintf(&repo->path_git_dir, "%s/%s", path, GOT_GIT_DIR) == -1) {
402 		err = got_error_from_errno("asprintf");
403 		goto done;
404 	}
405 	if (is_git_repo(repo)) {
406 		repo->path = strdup(path);
407 		if (repo->path == NULL) {
408 			err = got_error_from_errno("strdup");
409 			goto done;
410 		}
411 		repo->gitdir_fd = open(repo->path_git_dir,
412 		    O_DIRECTORY | O_CLOEXEC);
413 		if (repo->gitdir_fd == -1) {
414 			err = got_error_from_errno2("open",
415 			    repo->path_git_dir);
416 			goto done;
417 		}
418 		return NULL;
419 	}
420 
421 	err = got_error(GOT_ERR_NOT_GIT_REPO);
422 done:
423 	if (err) {
424 		free(repo->path);
425 		repo->path = NULL;
426 		free(repo->path_git_dir);
427 		repo->path_git_dir = NULL;
428 		if (repo->gitdir_fd != -1)
429 			close(repo->gitdir_fd);
430 		repo->gitdir_fd = -1;
431 
432 	}
433 	return err;
434 }
435 
436 static const struct got_error *
437 parse_gitconfig_file(int *gitconfig_repository_format_version,
438     char **gitconfig_author_name, char **gitconfig_author_email,
439     struct got_remote_repo **remotes, int *nremotes,
440     char **gitconfig_owner, char ***extensions, int *nextensions,
441     const char *gitconfig_path)
442 {
443 	const struct got_error *err = NULL, *child_err = NULL;
444 	int fd = -1;
445 	int imsg_fds[2] = { -1, -1 };
446 	pid_t pid;
447 	struct imsgbuf *ibuf;
448 
449 	*gitconfig_repository_format_version = 0;
450 	if (extensions)
451 		*extensions = NULL;
452 	if (nextensions)
453 		*nextensions = 0;
454 	*gitconfig_author_name = NULL;
455 	*gitconfig_author_email = NULL;
456 	if (remotes)
457 		*remotes = NULL;
458 	if (nremotes)
459 		*nremotes = 0;
460 	if (gitconfig_owner)
461 		*gitconfig_owner = NULL;
462 
463 	fd = open(gitconfig_path, O_RDONLY | O_CLOEXEC);
464 	if (fd == -1) {
465 		if (errno == ENOENT)
466 			return NULL;
467 		return got_error_from_errno2("open", gitconfig_path);
468 	}
469 
470 	ibuf = calloc(1, sizeof(*ibuf));
471 	if (ibuf == NULL) {
472 		err = got_error_from_errno("calloc");
473 		goto done;
474 	}
475 
476 	if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, imsg_fds) == -1) {
477 		err = got_error_from_errno("socketpair");
478 		goto done;
479 	}
480 
481 	pid = fork();
482 	if (pid == -1) {
483 		err = got_error_from_errno("fork");
484 		goto done;
485 	} else if (pid == 0) {
486 		got_privsep_exec_child(imsg_fds, GOT_PATH_PROG_READ_GITCONFIG,
487 		    gitconfig_path);
488 		/* not reached */
489 	}
490 
491 	if (close(imsg_fds[1]) == -1) {
492 		err = got_error_from_errno("close");
493 		goto done;
494 	}
495 	imsg_fds[1] = -1;
496 	imsg_init(ibuf, imsg_fds[0]);
497 
498 	err = got_privsep_send_gitconfig_parse_req(ibuf, fd);
499 	if (err)
500 		goto done;
501 	fd = -1;
502 
503 	err = got_privsep_send_gitconfig_repository_format_version_req(ibuf);
504 	if (err)
505 		goto done;
506 
507 	err = got_privsep_recv_gitconfig_int(
508 	    gitconfig_repository_format_version, ibuf);
509 	if (err)
510 		goto done;
511 
512 	if (extensions && nextensions) {
513 		err = got_privsep_send_gitconfig_repository_extensions_req(
514 		    ibuf);
515 		if (err)
516 			goto done;
517 		err = got_privsep_recv_gitconfig_int(nextensions, ibuf);
518 		if (err)
519 			goto done;
520 		if (*nextensions > 0) {
521 			int i;
522 			*extensions = calloc(*nextensions, sizeof(char *));
523 			if (*extensions == NULL) {
524 				err = got_error_from_errno("calloc");
525 				goto done;
526 			}
527 			for (i = 0; i < *nextensions; i++) {
528 				char *ext;
529 				err = got_privsep_recv_gitconfig_str(&ext,
530 				    ibuf);
531 				if (err)
532 					goto done;
533 				(*extensions)[i] = ext;
534 			}
535 		}
536 	}
537 
538 	err = got_privsep_send_gitconfig_author_name_req(ibuf);
539 	if (err)
540 		goto done;
541 
542 	err = got_privsep_recv_gitconfig_str(gitconfig_author_name, ibuf);
543 	if (err)
544 		goto done;
545 
546 	err = got_privsep_send_gitconfig_author_email_req(ibuf);
547 	if (err)
548 		goto done;
549 
550 	err = got_privsep_recv_gitconfig_str(gitconfig_author_email, ibuf);
551 	if (err)
552 		goto done;
553 
554 	if (remotes && nremotes) {
555 		err = got_privsep_send_gitconfig_remotes_req(ibuf);
556 		if (err)
557 			goto done;
558 
559 		err = got_privsep_recv_gitconfig_remotes(remotes,
560 		    nremotes, ibuf);
561 		if (err)
562 			goto done;
563 	}
564 
565 	if (gitconfig_owner) {
566 		err = got_privsep_send_gitconfig_owner_req(ibuf);
567 		if (err)
568 			goto done;
569 		err = got_privsep_recv_gitconfig_str(gitconfig_owner, ibuf);
570 		if (err)
571 			goto done;
572 	}
573 
574 	err = got_privsep_send_stop(imsg_fds[0]);
575 	child_err = got_privsep_wait_for_child(pid);
576 	if (child_err && err == NULL)
577 		err = child_err;
578 done:
579 	if (imsg_fds[0] != -1 && close(imsg_fds[0]) == -1 && err == NULL)
580 		err = got_error_from_errno("close");
581 	if (imsg_fds[1] != -1 && close(imsg_fds[1]) == -1 && err == NULL)
582 		err = got_error_from_errno("close");
583 	if (fd != -1 && close(fd) == -1 && err == NULL)
584 		err = got_error_from_errno2("close", gitconfig_path);
585 	free(ibuf);
586 	return err;
587 }
588 
589 static const struct got_error *
590 read_gitconfig(struct got_repository *repo, const char *global_gitconfig_path)
591 {
592 	const struct got_error *err = NULL;
593 	char *repo_gitconfig_path = NULL;
594 
595 	if (global_gitconfig_path) {
596 		/* Read settings from ~/.gitconfig. */
597 		int dummy_repo_version;
598 		err = parse_gitconfig_file(&dummy_repo_version,
599 		    &repo->global_gitconfig_author_name,
600 		    &repo->global_gitconfig_author_email,
601 		    NULL, NULL, NULL, NULL, NULL, global_gitconfig_path);
602 		if (err)
603 			return err;
604 	}
605 
606 	/* Read repository's .git/config file. */
607 	repo_gitconfig_path = got_repo_get_path_gitconfig(repo);
608 	if (repo_gitconfig_path == NULL)
609 		return got_error_from_errno("got_repo_get_path_gitconfig");
610 
611 	err = parse_gitconfig_file(&repo->gitconfig_repository_format_version,
612 	    &repo->gitconfig_author_name, &repo->gitconfig_author_email,
613 	    &repo->gitconfig_remotes, &repo->ngitconfig_remotes,
614 	    &repo->gitconfig_owner, &repo->extensions, &repo->nextensions,
615 	    repo_gitconfig_path);
616 	if (err)
617 		goto done;
618 done:
619 	free(repo_gitconfig_path);
620 	return err;
621 }
622 
623 static const struct got_error *
624 read_gotconfig(struct got_repository *repo)
625 {
626 	const struct got_error *err = NULL;
627 	char *gotconfig_path;
628 
629 	gotconfig_path = got_repo_get_path_gotconfig(repo);
630 	if (gotconfig_path == NULL)
631 		return got_error_from_errno("got_repo_get_path_gotconfig");
632 
633 	err = got_gotconfig_read(&repo->gotconfig, gotconfig_path);
634 	free(gotconfig_path);
635 	return err;
636 }
637 
638 /* Supported repository format extensions. */
639 static const char *const repo_extensions[] = {
640 	"noop",			/* Got supports repository format version 1. */
641 	"preciousObjects",	/* Supported by gotadmin cleanup. */
642 	"worktreeConfig",	/* Got does not care about Git work trees. */
643 };
644 
645 const struct got_error *
646 got_repo_open(struct got_repository **repop, const char *path,
647     const char *global_gitconfig_path)
648 {
649 	struct got_repository *repo = NULL;
650 	const struct got_error *err = NULL;
651 	char *repo_path = NULL;
652 	size_t i;
653 	struct rlimit rl;
654 
655 	*repop = NULL;
656 
657 	if (getrlimit(RLIMIT_NOFILE, &rl) == -1)
658 		return got_error_from_errno("getrlimit");
659 
660 	repo = calloc(1, sizeof(*repo));
661 	if (repo == NULL)
662 		return got_error_from_errno("calloc");
663 
664 	RB_INIT(&repo->packidx_bloom_filters);
665 	TAILQ_INIT(&repo->packidx_paths);
666 
667 	for (i = 0; i < nitems(repo->privsep_children); i++) {
668 		memset(&repo->privsep_children[i], 0,
669 		    sizeof(repo->privsep_children[0]));
670 		repo->privsep_children[i].imsg_fd = -1;
671 	}
672 
673 	err = got_object_cache_init(&repo->objcache,
674 	    GOT_OBJECT_CACHE_TYPE_OBJ);
675 	if (err)
676 		goto done;
677 	err = got_object_cache_init(&repo->treecache,
678 	    GOT_OBJECT_CACHE_TYPE_TREE);
679 	if (err)
680 		goto done;
681 	err = got_object_cache_init(&repo->commitcache,
682 	    GOT_OBJECT_CACHE_TYPE_COMMIT);
683 	if (err)
684 		goto done;
685 	err = got_object_cache_init(&repo->tagcache,
686 	    GOT_OBJECT_CACHE_TYPE_TAG);
687 	if (err)
688 		goto done;
689 	err = got_object_cache_init(&repo->rawcache,
690 	    GOT_OBJECT_CACHE_TYPE_RAW);
691 	if (err)
692 		goto done;
693 
694 	repo->pack_cache_size = GOT_PACK_CACHE_SIZE;
695 	if (repo->pack_cache_size > rl.rlim_cur / 8)
696 		repo->pack_cache_size = rl.rlim_cur / 8;
697 
698 	repo_path = realpath(path, NULL);
699 	if (repo_path == NULL) {
700 		err = got_error_from_errno2("realpath", path);
701 		goto done;
702 	}
703 
704 	for (;;) {
705 		char *parent_path;
706 
707 		err = open_repo(repo, repo_path);
708 		if (err == NULL)
709 			break;
710 		if (err->code != GOT_ERR_NOT_GIT_REPO)
711 			goto done;
712 		if (repo_path[0] == '/' && repo_path[1] == '\0') {
713 			err = got_error(GOT_ERR_NOT_GIT_REPO);
714 			goto done;
715 		}
716 		err = got_path_dirname(&parent_path, repo_path);
717 		if (err)
718 			goto done;
719 		free(repo_path);
720 		repo_path = parent_path;
721 	}
722 
723 	err = read_gotconfig(repo);
724 	if (err)
725 		goto done;
726 
727 	err = read_gitconfig(repo, global_gitconfig_path);
728 	if (err)
729 		goto done;
730 	if (repo->gitconfig_repository_format_version != 0)
731 		err = got_error_path(path, GOT_ERR_GIT_REPO_FORMAT);
732 	for (i = 0; i < repo->nextensions; i++) {
733 		char *ext = repo->extensions[i];
734 		int j, supported = 0;
735 		for (j = 0; j < nitems(repo_extensions); j++) {
736 			if (strcmp(ext, repo_extensions[j]) == 0) {
737 				supported = 1;
738 				break;
739 			}
740 		}
741 		if (!supported) {
742 			err = got_error_path(ext, GOT_ERR_GIT_REPO_EXT);
743 			goto done;
744 		}
745 	}
746 
747 	err = got_repo_list_packidx(&repo->packidx_paths, repo);
748 done:
749 	if (err)
750 		got_repo_close(repo);
751 	else
752 		*repop = repo;
753 	free(repo_path);
754 	return err;
755 }
756 
757 const struct got_error *
758 got_repo_close(struct got_repository *repo)
759 {
760 	const struct got_error *err = NULL, *child_err;
761 	struct got_packidx_bloom_filter *bf;
762 	struct got_pathlist_entry *pe;
763 	size_t i;
764 
765 	for (i = 0; i < repo->pack_cache_size; i++) {
766 		if (repo->packidx_cache[i] == NULL)
767 			break;
768 		got_packidx_close(repo->packidx_cache[i]);
769 	}
770 
771 	while ((bf = RB_MIN(got_packidx_bloom_filter_tree,
772 	    &repo->packidx_bloom_filters))) {
773 		RB_REMOVE(got_packidx_bloom_filter_tree,
774 		    &repo->packidx_bloom_filters, bf);
775 		free(bf->bloom);
776 		free(bf);
777 	}
778 
779 	for (i = 0; i < repo->pack_cache_size; i++) {
780 		if (repo->packs[i].path_packfile == NULL)
781 			break;
782 		got_pack_close(&repo->packs[i]);
783 	}
784 
785 	free(repo->path);
786 	free(repo->path_git_dir);
787 
788 	got_object_cache_close(&repo->objcache);
789 	got_object_cache_close(&repo->treecache);
790 	got_object_cache_close(&repo->commitcache);
791 	got_object_cache_close(&repo->tagcache);
792 	got_object_cache_close(&repo->rawcache);
793 
794 	for (i = 0; i < nitems(repo->privsep_children); i++) {
795 		if (repo->privsep_children[i].imsg_fd == -1)
796 			continue;
797 		imsg_clear(repo->privsep_children[i].ibuf);
798 		free(repo->privsep_children[i].ibuf);
799 		err = got_privsep_send_stop(repo->privsep_children[i].imsg_fd);
800 		child_err = got_privsep_wait_for_child(
801 		    repo->privsep_children[i].pid);
802 		if (child_err && err == NULL)
803 			err = child_err;
804 		if (close(repo->privsep_children[i].imsg_fd) == -1 &&
805 		    err == NULL)
806 			err = got_error_from_errno("close");
807 	}
808 
809 	if (repo->gitdir_fd != -1 && close(repo->gitdir_fd) == -1 &&
810 	    err == NULL)
811 		err = got_error_from_errno("close");
812 
813 	if (repo->gotconfig)
814 		got_gotconfig_free(repo->gotconfig);
815 	free(repo->gitconfig_author_name);
816 	free(repo->gitconfig_author_email);
817 	for (i = 0; i < repo->ngitconfig_remotes; i++)
818 		got_repo_free_remote_repo_data(&repo->gitconfig_remotes[i]);
819 	free(repo->gitconfig_remotes);
820 	for (i = 0; i < repo->nextensions; i++)
821 		free(repo->extensions[i]);
822 	free(repo->extensions);
823 
824 	TAILQ_FOREACH(pe, &repo->packidx_paths, entry)
825 		free((void *)pe->path);
826 	got_pathlist_free(&repo->packidx_paths);
827 	free(repo);
828 
829 	return err;
830 }
831 
832 void
833 got_repo_free_remote_repo_data(struct got_remote_repo *repo)
834 {
835 	int i;
836 
837 	free(repo->name);
838 	repo->name = NULL;
839 	free(repo->fetch_url);
840 	repo->fetch_url = NULL;
841 	free(repo->send_url);
842 	repo->send_url = NULL;
843 	for (i = 0; i < repo->nfetch_branches; i++)
844 		free(repo->fetch_branches[i]);
845 	free(repo->fetch_branches);
846 	repo->fetch_branches = NULL;
847 	repo->nfetch_branches = 0;
848 	for (i = 0; i < repo->nsend_branches; i++)
849 		free(repo->send_branches[i]);
850 	free(repo->send_branches);
851 	repo->send_branches = NULL;
852 	repo->nsend_branches = 0;
853 }
854 
855 const struct got_error *
856 got_repo_map_path(char **in_repo_path, struct got_repository *repo,
857     const char *input_path)
858 {
859 	const struct got_error *err = NULL;
860 	const char *repo_abspath = NULL;
861 	size_t repolen, len;
862 	char *canonpath, *path = NULL;
863 
864 	*in_repo_path = NULL;
865 
866 	canonpath = strdup(input_path);
867 	if (canonpath == NULL) {
868 		err = got_error_from_errno("strdup");
869 		goto done;
870 	}
871 	err = got_canonpath(input_path, canonpath, strlen(canonpath) + 1);
872 	if (err)
873 		goto done;
874 
875 	repo_abspath = got_repo_get_path(repo);
876 
877 	if (canonpath[0] == '\0') {
878 		path = strdup(canonpath);
879 		if (path == NULL) {
880 			err = got_error_from_errno("strdup");
881 			goto done;
882 		}
883 	} else {
884 		path = realpath(canonpath, NULL);
885 		if (path == NULL) {
886 			if (errno != ENOENT) {
887 				err = got_error_from_errno2("realpath",
888 				    canonpath);
889 				goto done;
890 			}
891 			/*
892 			 * Path is not on disk.
893 			 * Assume it is already relative to repository root.
894 			 */
895 			path = strdup(canonpath);
896 			if (path == NULL) {
897 				err = got_error_from_errno("strdup");
898 				goto done;
899 			}
900 		}
901 
902 		repolen = strlen(repo_abspath);
903 		len = strlen(path);
904 
905 
906 		if (strcmp(path, repo_abspath) == 0) {
907 			free(path);
908 			path = strdup("");
909 			if (path == NULL) {
910 				err = got_error_from_errno("strdup");
911 				goto done;
912 			}
913 		} else if (len > repolen &&
914 		    got_path_is_child(path, repo_abspath, repolen)) {
915 			/* Matched an on-disk path inside repository. */
916 			if (got_repo_is_bare(repo)) {
917 				/*
918 				 * Matched an on-disk path inside repository
919 				 * database. Treat input as repository-relative.
920 				 */
921 				free(path);
922 				path = canonpath;
923 				canonpath = NULL;
924 			} else {
925 				char *child;
926 				/* Strip common prefix with repository path. */
927 				err = got_path_skip_common_ancestor(&child,
928 				    repo_abspath, path);
929 				if (err)
930 					goto done;
931 				free(path);
932 				path = child;
933 			}
934 		} else {
935 			/*
936 			 * Matched unrelated on-disk path.
937 			 * Treat input as repository-relative.
938 			 */
939 			free(path);
940 			path = canonpath;
941 			canonpath = NULL;
942 		}
943 	}
944 
945 	/* Make in-repository path absolute */
946 	if (path[0] != '/') {
947 		char *abspath;
948 		if (asprintf(&abspath, "/%s", path) == -1) {
949 			err = got_error_from_errno("asprintf");
950 			goto done;
951 		}
952 		free(path);
953 		path = abspath;
954 	}
955 
956 done:
957 	free(canonpath);
958 	if (err)
959 		free(path);
960 	else
961 		*in_repo_path = path;
962 	return err;
963 }
964 
965 static const struct got_error *
966 cache_packidx(struct got_repository *repo, struct got_packidx *packidx,
967     const char *path_packidx)
968 {
969 	const struct got_error *err = NULL;
970 	size_t i;
971 
972 	for (i = 0; i < repo->pack_cache_size; i++) {
973 		if (repo->packidx_cache[i] == NULL)
974 			break;
975 		if (strcmp(repo->packidx_cache[i]->path_packidx,
976 		    path_packidx) == 0) {
977 			return got_error(GOT_ERR_CACHE_DUP_ENTRY);
978 		}
979 	}
980 	if (i == repo->pack_cache_size) {
981 		i = repo->pack_cache_size - 1;
982 		err = got_packidx_close(repo->packidx_cache[i]);
983 		if (err)
984 			return err;
985 	}
986 
987 	repo->packidx_cache[i] = packidx;
988 
989 	return NULL;
990 }
991 
992 int
993 got_repo_is_packidx_filename(const char *name, size_t len)
994 {
995 	if (len != GOT_PACKIDX_NAMELEN)
996 		return 0;
997 
998 	if (strncmp(name, GOT_PACK_PREFIX, strlen(GOT_PACK_PREFIX)) != 0)
999 		return 0;
1000 
1001 	if (strcmp(name + strlen(GOT_PACK_PREFIX) +
1002 	    SHA1_DIGEST_STRING_LENGTH - 1, GOT_PACKIDX_SUFFIX) != 0)
1003 		return 0;
1004 
1005 	return 1;
1006 }
1007 
1008 static struct got_packidx_bloom_filter *
1009 get_packidx_bloom_filter(struct got_repository *repo,
1010     const char *path, size_t path_len)
1011 {
1012 	struct got_packidx_bloom_filter key;
1013 
1014 	if (strlcpy(key.path, path, sizeof(key.path)) >= sizeof(key.path))
1015 		return NULL; /* XXX */
1016 	key.path_len = path_len;
1017 
1018 	return RB_FIND(got_packidx_bloom_filter_tree,
1019 	    &repo->packidx_bloom_filters, &key);
1020 }
1021 
1022 int
1023 got_repo_check_packidx_bloom_filter(struct got_repository *repo,
1024     const char *path_packidx, struct got_object_id *id)
1025 {
1026 	struct got_packidx_bloom_filter *bf;
1027 
1028 	bf = get_packidx_bloom_filter(repo, path_packidx, strlen(path_packidx));
1029 	if (bf)
1030 		return bloom_check(bf->bloom, id->sha1, sizeof(id->sha1));
1031 
1032 	/* No bloom filter means this pack index must be searched. */
1033 	return 1;
1034 }
1035 
1036 static const struct got_error *
1037 add_packidx_bloom_filter(struct got_repository *repo,
1038     struct got_packidx *packidx, const char *path_packidx)
1039 {
1040 	int i, nobjects = be32toh(packidx->hdr.fanout_table[0xff]);
1041 	struct got_packidx_bloom_filter *bf;
1042 	size_t len;
1043 
1044 	/*
1045 	 * Don't use bloom filters for very large pack index files.
1046 	 * Large pack files will contain a relatively large fraction
1047 	 * of our objects so we will likely need to visit them anyway.
1048 	 * The more objects a pack file contains the higher the probability
1049 	 * of a false-positive match from the bloom filter. And reading
1050 	 * all object IDs from a large pack index file can be expensive.
1051 	 */
1052 	if (nobjects > 100000) /* cut-off at about 2MB, at 20 bytes per ID */
1053 		return NULL;
1054 
1055 	/* Do we already have a filter for this pack index? */
1056 	if (get_packidx_bloom_filter(repo, path_packidx,
1057 	    strlen(path_packidx)) != NULL)
1058 		return NULL;
1059 
1060 	bf = calloc(1, sizeof(*bf));
1061 	if (bf == NULL)
1062 		return got_error_from_errno("calloc");
1063 	bf->bloom = calloc(1, sizeof(*bf->bloom));
1064 	if (bf->bloom == NULL) {
1065 		free(bf);
1066 		return got_error_from_errno("calloc");
1067 	}
1068 	
1069 	len = strlcpy(bf->path, path_packidx, sizeof(bf->path));
1070 	if (len >= sizeof(bf->path)) {
1071 		free(bf->bloom);
1072 		free(bf);
1073 		return got_error(GOT_ERR_NO_SPACE);
1074 	}
1075 	bf->path_len = len;
1076 
1077 	/* Minimum size supported by our bloom filter is 1000 entries. */
1078 	bloom_init(bf->bloom, nobjects < 1000 ? 1000 : nobjects, 0.1);
1079 	for (i = 0; i < nobjects; i++) {
1080 		struct got_packidx_object_id *id;
1081 		id = &packidx->hdr.sorted_ids[i];
1082 		bloom_add(bf->bloom, id->sha1, sizeof(id->sha1));
1083 	}
1084 
1085 	RB_INSERT(got_packidx_bloom_filter_tree,
1086 	    &repo->packidx_bloom_filters, bf);
1087 	return NULL;
1088 }
1089 
1090 const struct got_error *
1091 got_repo_search_packidx(struct got_packidx **packidx, int *idx,
1092     struct got_repository *repo, struct got_object_id *id)
1093 {
1094 	const struct got_error *err;
1095 	struct got_pathlist_entry *pe;
1096 	size_t i;
1097 
1098 	/* Search pack index cache. */
1099 	for (i = 0; i < repo->pack_cache_size; i++) {
1100 		if (repo->packidx_cache[i] == NULL)
1101 			break;
1102 		if (!got_repo_check_packidx_bloom_filter(repo,
1103 		    repo->packidx_cache[i]->path_packidx, id))
1104 			continue; /* object will not be found in this index */
1105 		*idx = got_packidx_get_object_idx(repo->packidx_cache[i], id);
1106 		if (*idx != -1) {
1107 			*packidx = repo->packidx_cache[i];
1108 			/*
1109 			 * Move this cache entry to the front. Repeatedly
1110 			 * searching a wrong pack index can be expensive.
1111 			 */
1112 			if (i > 0) {
1113 				memmove(&repo->packidx_cache[1],
1114 				    &repo->packidx_cache[0],
1115 				    i * sizeof(repo->packidx_cache[0]));
1116 				repo->packidx_cache[0] = *packidx;
1117 			}
1118 			return NULL;
1119 		}
1120 	}
1121 	/* No luck. Search the filesystem. */
1122 
1123 	TAILQ_FOREACH(pe, &repo->packidx_paths, entry) {
1124 		const char *path_packidx = pe->path;
1125 		int is_cached = 0;
1126 
1127 		if (!got_repo_check_packidx_bloom_filter(repo,
1128 		    pe->path, id))
1129 			continue; /* object will not be found in this index */
1130 
1131 		for (i = 0; i < repo->pack_cache_size; i++) {
1132 			if (repo->packidx_cache[i] == NULL)
1133 				break;
1134 			if (strcmp(repo->packidx_cache[i]->path_packidx,
1135 			    path_packidx) == 0) {
1136 				is_cached = 1;
1137 				break;
1138 			}
1139 		}
1140 		if (is_cached)
1141 			continue; /* already searched */
1142 
1143 		err = got_packidx_open(packidx, got_repo_get_fd(repo),
1144 		    path_packidx, 0);
1145 		if (err)
1146 			goto done;
1147 
1148 		err = add_packidx_bloom_filter(repo, *packidx, path_packidx);
1149 		if (err)
1150 			goto done;
1151 
1152 		err = cache_packidx(repo, *packidx, path_packidx);
1153 		if (err)
1154 			goto done;
1155 
1156 		*idx = got_packidx_get_object_idx(*packidx, id);
1157 		if (*idx != -1) {
1158 			err = NULL; /* found the object */
1159 			goto done;
1160 		}
1161 	}
1162 
1163 	err = got_error_no_obj(id);
1164 done:
1165 	return err;
1166 }
1167 
1168 const struct got_error *
1169 got_repo_list_packidx(struct got_pathlist_head *packidx_paths,
1170     struct got_repository *repo)
1171 {
1172 	const struct got_error *err = NULL;
1173 	DIR *packdir = NULL;
1174 	struct dirent *dent;
1175 	char *path_packidx = NULL;
1176 	int packdir_fd;
1177 
1178 	packdir_fd = openat(got_repo_get_fd(repo),
1179 	    GOT_OBJECTS_PACK_DIR, O_DIRECTORY | O_CLOEXEC);
1180 	if (packdir_fd == -1) {
1181 		return got_error_from_errno_fmt("openat: %s/%s",
1182 		    got_repo_get_path_git_dir(repo),
1183 		    GOT_OBJECTS_PACK_DIR);
1184 	}
1185 
1186 	packdir = fdopendir(packdir_fd);
1187 	if (packdir == NULL) {
1188 		err = got_error_from_errno("fdopendir");
1189 		goto done;
1190 	}
1191 
1192 	while ((dent = readdir(packdir)) != NULL) {
1193 		if (!got_repo_is_packidx_filename(dent->d_name,
1194 		    strlen(dent->d_name)))
1195 			continue;
1196 
1197 		if (asprintf(&path_packidx, "%s/%s", GOT_OBJECTS_PACK_DIR,
1198 		    dent->d_name) == -1) {
1199 			err = got_error_from_errno("asprintf");
1200 			path_packidx = NULL;
1201 			break;
1202 		}
1203 
1204 		err = got_pathlist_append(packidx_paths, path_packidx, NULL);
1205 		if (err)
1206 			break;
1207 	}
1208 done:
1209 	if (err)
1210 		free(path_packidx);
1211 	if (packdir && closedir(packdir) != 0 && err == NULL)
1212 		err = got_error_from_errno("closedir");
1213 	return err;
1214 }
1215 
1216 const struct got_error *
1217 got_repo_get_packidx(struct got_packidx **packidx, const char *path_packidx,
1218     struct got_repository *repo)
1219 {
1220 	const struct got_error *err;
1221 	size_t i;
1222 
1223 	*packidx = NULL;
1224 
1225 	/* Search pack index cache. */
1226 	for (i = 0; i < repo->pack_cache_size; i++) {
1227 		if (repo->packidx_cache[i] == NULL)
1228 			break;
1229 		if (strcmp(repo->packidx_cache[i]->path_packidx,
1230 		    path_packidx) == 0) {
1231 			*packidx = repo->packidx_cache[i];
1232 			return NULL;
1233 		}
1234 	}
1235 	/* No luck. Search the filesystem. */
1236 
1237 	err = got_packidx_open(packidx, got_repo_get_fd(repo),
1238 	    path_packidx, 0);
1239 	if (err)
1240 		return err;
1241 
1242 	err = add_packidx_bloom_filter(repo, *packidx, path_packidx);
1243 	if (err)
1244 		goto done;
1245 
1246 	err = cache_packidx(repo, *packidx, path_packidx);
1247 done:
1248 	if (err) {
1249 		got_packidx_close(*packidx);
1250 		*packidx = NULL;
1251 	}
1252 	return err;
1253 }
1254 
1255 static const struct got_error *
1256 read_packfile_hdr(int fd, struct got_packidx *packidx)
1257 {
1258 	const struct got_error *err = NULL;
1259 	uint32_t totobj = be32toh(packidx->hdr.fanout_table[0xff]);
1260 	struct got_packfile_hdr hdr;
1261 	ssize_t n;
1262 
1263 	n = read(fd, &hdr, sizeof(hdr));
1264 	if (n < 0)
1265 		return got_error_from_errno("read");
1266 	if (n != sizeof(hdr))
1267 		return got_error(GOT_ERR_BAD_PACKFILE);
1268 
1269 	if (be32toh(hdr.signature) != GOT_PACKFILE_SIGNATURE ||
1270 	    be32toh(hdr.version) != GOT_PACKFILE_VERSION ||
1271 	    be32toh(hdr.nobjects) != totobj)
1272 		err = got_error(GOT_ERR_BAD_PACKFILE);
1273 
1274 	return err;
1275 }
1276 
1277 static const struct got_error *
1278 open_packfile(int *fd, struct got_repository *repo,
1279     const char *relpath, struct got_packidx *packidx)
1280 {
1281 	const struct got_error *err = NULL;
1282 
1283 	*fd = openat(got_repo_get_fd(repo), relpath,
1284 	    O_RDONLY | O_NOFOLLOW | O_CLOEXEC);
1285 	if (*fd == -1)
1286 		return got_error_from_errno_fmt("openat: %s/%s",
1287 		    got_repo_get_path_git_dir(repo), relpath);
1288 
1289 	if (packidx) {
1290 		err = read_packfile_hdr(*fd, packidx);
1291 		if (err) {
1292 			close(*fd);
1293 			*fd = -1;
1294 		}
1295 	}
1296 
1297 	return err;
1298 }
1299 
1300 const struct got_error *
1301 got_repo_cache_pack(struct got_pack **packp, struct got_repository *repo,
1302     const char *path_packfile, struct got_packidx *packidx)
1303 {
1304 	const struct got_error *err = NULL;
1305 	struct got_pack *pack = NULL;
1306 	struct stat sb;
1307 	size_t i;
1308 
1309 	if (packp)
1310 		*packp = NULL;
1311 
1312 	for (i = 0; i < repo->pack_cache_size; i++) {
1313 		pack = &repo->packs[i];
1314 		if (pack->path_packfile == NULL)
1315 			break;
1316 		if (strcmp(pack->path_packfile, path_packfile) == 0)
1317 			return got_error(GOT_ERR_CACHE_DUP_ENTRY);
1318 	}
1319 
1320 	if (i == repo->pack_cache_size) {
1321 		err = got_pack_close(&repo->packs[i - 1]);
1322 		if (err)
1323 			return err;
1324 		memmove(&repo->packs[1], &repo->packs[0],
1325 		    sizeof(repo->packs) - sizeof(repo->packs[0]));
1326 		i = 0;
1327 	}
1328 
1329 	pack = &repo->packs[i];
1330 
1331 	pack->path_packfile = strdup(path_packfile);
1332 	if (pack->path_packfile == NULL) {
1333 		err = got_error_from_errno("strdup");
1334 		goto done;
1335 	}
1336 
1337 	err = open_packfile(&pack->fd, repo, path_packfile, packidx);
1338 	if (err)
1339 		goto done;
1340 
1341 	if (fstat(pack->fd, &sb) != 0) {
1342 		err = got_error_from_errno("fstat");
1343 		goto done;
1344 	}
1345 	pack->filesize = sb.st_size;
1346 
1347 	pack->privsep_child = NULL;
1348 
1349 #ifndef GOT_PACK_NO_MMAP
1350 	pack->map = mmap(NULL, pack->filesize, PROT_READ, MAP_PRIVATE,
1351 	    pack->fd, 0);
1352 	if (pack->map == MAP_FAILED) {
1353 		if (errno != ENOMEM) {
1354 			err = got_error_from_errno("mmap");
1355 			goto done;
1356 		}
1357 		pack->map = NULL; /* fall back to read(2) */
1358 	}
1359 #endif
1360 done:
1361 	if (err) {
1362 		if (pack) {
1363 			free(pack->path_packfile);
1364 			memset(pack, 0, sizeof(*pack));
1365 		}
1366 	} else if (packp)
1367 		*packp = pack;
1368 	return err;
1369 }
1370 
1371 struct got_pack *
1372 got_repo_get_cached_pack(struct got_repository *repo, const char *path_packfile)
1373 {
1374 	struct got_pack *pack = NULL;
1375 	size_t i;
1376 
1377 	for (i = 0; i < repo->pack_cache_size; i++) {
1378 		pack = &repo->packs[i];
1379 		if (pack->path_packfile == NULL)
1380 			break;
1381 		if (strcmp(pack->path_packfile, path_packfile) == 0)
1382 			return pack;
1383 	}
1384 
1385 	return NULL;
1386 }
1387 
1388 const struct got_error *
1389 got_repo_init(const char *repo_path)
1390 {
1391 	const struct got_error *err = NULL;
1392 	const char *dirnames[] = {
1393 		GOT_OBJECTS_DIR,
1394 		GOT_OBJECTS_PACK_DIR,
1395 		GOT_REFS_DIR,
1396 	};
1397 	const char *description_str = "Unnamed repository; "
1398 	    "edit this file 'description' to name the repository.";
1399 	const char *headref_str = "ref: refs/heads/main";
1400 	const char *gitconfig_str = "[core]\n"
1401 	    "\trepositoryformatversion = 0\n"
1402 	    "\tfilemode = true\n"
1403 	    "\tbare = true\n";
1404 	char *path;
1405 	size_t i;
1406 
1407 	if (!got_path_dir_is_empty(repo_path))
1408 		return got_error(GOT_ERR_DIR_NOT_EMPTY);
1409 
1410 	for (i = 0; i < nitems(dirnames); i++) {
1411 		if (asprintf(&path, "%s/%s", repo_path, dirnames[i]) == -1) {
1412 			return got_error_from_errno("asprintf");
1413 		}
1414 		err = got_path_mkdir(path);
1415 		free(path);
1416 		if (err)
1417 			return err;
1418 	}
1419 
1420 	if (asprintf(&path, "%s/%s", repo_path, "description") == -1)
1421 		return got_error_from_errno("asprintf");
1422 	err = got_path_create_file(path, description_str);
1423 	free(path);
1424 	if (err)
1425 		return err;
1426 
1427 	if (asprintf(&path, "%s/%s", repo_path, GOT_HEAD_FILE) == -1)
1428 		return got_error_from_errno("asprintf");
1429 	err = got_path_create_file(path, headref_str);
1430 	free(path);
1431 	if (err)
1432 		return err;
1433 
1434 	if (asprintf(&path, "%s/%s", repo_path, "config") == -1)
1435 		return got_error_from_errno("asprintf");
1436 	err = got_path_create_file(path, gitconfig_str);
1437 	free(path);
1438 	if (err)
1439 		return err;
1440 
1441 	return NULL;
1442 }
1443 
1444 static const struct got_error *
1445 match_packed_object(struct got_object_id **unique_id,
1446     struct got_repository *repo, const char *id_str_prefix, int obj_type)
1447 {
1448 	const struct got_error *err = NULL;
1449 	struct got_object_id_queue matched_ids;
1450 	struct got_pathlist_entry *pe;
1451 
1452 	STAILQ_INIT(&matched_ids);
1453 
1454 	TAILQ_FOREACH(pe, &repo->packidx_paths, entry) {
1455 		const char *path_packidx = pe->path;
1456 		struct got_packidx *packidx;
1457 		struct got_object_qid *qid;
1458 
1459 		err = got_packidx_open(&packidx, got_repo_get_fd(repo),
1460 		    path_packidx, 0);
1461 		if (err)
1462 			break;
1463 
1464 		err = got_packidx_match_id_str_prefix(&matched_ids,
1465 		    packidx, id_str_prefix);
1466 		if (err) {
1467 			got_packidx_close(packidx);
1468 			break;
1469 		}
1470 		err = got_packidx_close(packidx);
1471 		if (err)
1472 			break;
1473 
1474 		STAILQ_FOREACH(qid, &matched_ids, entry) {
1475 			if (obj_type != GOT_OBJ_TYPE_ANY) {
1476 				int matched_type;
1477 				err = got_object_get_type(&matched_type, repo,
1478 				    qid->id);
1479 				if (err)
1480 					goto done;
1481 				if (matched_type != obj_type)
1482 					continue;
1483 			}
1484 			if (*unique_id == NULL) {
1485 				*unique_id = got_object_id_dup(qid->id);
1486 				if (*unique_id == NULL) {
1487 					err = got_error_from_errno("malloc");
1488 					goto done;
1489 				}
1490 			} else {
1491 				if (got_object_id_cmp(*unique_id, qid->id) == 0)
1492 					continue; /* packed multiple times */
1493 				err = got_error(GOT_ERR_AMBIGUOUS_ID);
1494 				goto done;
1495 			}
1496 		}
1497 	}
1498 done:
1499 	got_object_id_queue_free(&matched_ids);
1500 	if (err) {
1501 		free(*unique_id);
1502 		*unique_id = NULL;
1503 	}
1504 	return err;
1505 }
1506 
1507 static const struct got_error *
1508 match_loose_object(struct got_object_id **unique_id, const char *path_objects,
1509     const char *object_dir, const char *id_str_prefix, int obj_type,
1510     struct got_repository *repo)
1511 {
1512 	const struct got_error *err = NULL;
1513 	char *path;
1514 	DIR *dir = NULL;
1515 	struct dirent *dent;
1516 	struct got_object_id id;
1517 
1518 	if (asprintf(&path, "%s/%s", path_objects, object_dir) == -1) {
1519 		err = got_error_from_errno("asprintf");
1520 		goto done;
1521 	}
1522 
1523 	dir = opendir(path);
1524 	if (dir == NULL) {
1525 		if (errno == ENOENT) {
1526 			err = NULL;
1527 			goto done;
1528 		}
1529 		err = got_error_from_errno2("opendir", path);
1530 		goto done;
1531 	}
1532 	while ((dent = readdir(dir)) != NULL) {
1533 		char *id_str;
1534 		int cmp;
1535 
1536 		if (strcmp(dent->d_name, ".") == 0 ||
1537 		    strcmp(dent->d_name, "..") == 0)
1538 			continue;
1539 
1540 		if (asprintf(&id_str, "%s%s", object_dir, dent->d_name) == -1) {
1541 			err = got_error_from_errno("asprintf");
1542 			goto done;
1543 		}
1544 
1545 		if (!got_parse_sha1_digest(id.sha1, id_str))
1546 			continue;
1547 
1548 		/*
1549 		 * Directory entries do not necessarily appear in
1550 		 * sorted order, so we must iterate over all of them.
1551 		 */
1552 		cmp = strncmp(id_str, id_str_prefix, strlen(id_str_prefix));
1553 		if (cmp != 0) {
1554 			free(id_str);
1555 			continue;
1556 		}
1557 
1558 		if (*unique_id == NULL) {
1559 			if (obj_type != GOT_OBJ_TYPE_ANY) {
1560 				int matched_type;
1561 				err = got_object_get_type(&matched_type, repo,
1562 				    &id);
1563 				if (err)
1564 					goto done;
1565 				if (matched_type != obj_type)
1566 					continue;
1567 			}
1568 			*unique_id = got_object_id_dup(&id);
1569 			if (*unique_id == NULL) {
1570 				err = got_error_from_errno("got_object_id_dup");
1571 				free(id_str);
1572 				goto done;
1573 			}
1574 		} else {
1575 			if (got_object_id_cmp(*unique_id, &id) == 0)
1576 				continue; /* both packed and loose */
1577 			err = got_error(GOT_ERR_AMBIGUOUS_ID);
1578 			free(id_str);
1579 			goto done;
1580 		}
1581 	}
1582 done:
1583 	if (dir && closedir(dir) != 0 && err == NULL)
1584 		err = got_error_from_errno("closedir");
1585 	if (err) {
1586 		free(*unique_id);
1587 		*unique_id = NULL;
1588 	}
1589 	free(path);
1590 	return err;
1591 }
1592 
1593 const struct got_error *
1594 got_repo_match_object_id_prefix(struct got_object_id **id,
1595     const char *id_str_prefix, int obj_type, struct got_repository *repo)
1596 {
1597 	const struct got_error *err = NULL;
1598 	char *path_objects = got_repo_get_path_objects(repo);
1599 	char *object_dir = NULL;
1600 	size_t len;
1601 	int i;
1602 
1603 	*id = NULL;
1604 
1605 	len = strlen(id_str_prefix);
1606 	if (len > SHA1_DIGEST_STRING_LENGTH - 1)
1607 		return got_error_path(id_str_prefix, GOT_ERR_BAD_OBJ_ID_STR);
1608 
1609 	for (i = 0; i < len; i++) {
1610 		if (isxdigit((unsigned char)id_str_prefix[i]))
1611 			continue;
1612 		return got_error_path(id_str_prefix, GOT_ERR_BAD_OBJ_ID_STR);
1613 	}
1614 
1615 	if (len >= 2) {
1616 		err = match_packed_object(id, repo, id_str_prefix, obj_type);
1617 		if (err)
1618 			goto done;
1619 		object_dir = strndup(id_str_prefix, 2);
1620 		if (object_dir == NULL) {
1621 			err = got_error_from_errno("strdup");
1622 			goto done;
1623 		}
1624 		err = match_loose_object(id, path_objects, object_dir,
1625 		    id_str_prefix, obj_type, repo);
1626 	} else if (len == 1) {
1627 		int i;
1628 		for (i = 0; i < 0xf; i++) {
1629 			if (asprintf(&object_dir, "%s%.1x", id_str_prefix, i)
1630 			    == -1) {
1631 				err = got_error_from_errno("asprintf");
1632 				goto done;
1633 			}
1634 			err = match_packed_object(id, repo, object_dir,
1635 			    obj_type);
1636 			if (err)
1637 				goto done;
1638 			err = match_loose_object(id, path_objects, object_dir,
1639 			    id_str_prefix, obj_type, repo);
1640 			if (err)
1641 				goto done;
1642 		}
1643 	} else {
1644 		err = got_error_path(id_str_prefix, GOT_ERR_BAD_OBJ_ID_STR);
1645 		goto done;
1646 	}
1647 done:
1648 	free(object_dir);
1649 	if (err) {
1650 		free(*id);
1651 		*id = NULL;
1652 	} else if (*id == NULL) {
1653 		switch (obj_type) {
1654 		case GOT_OBJ_TYPE_BLOB:
1655 			err = got_error_fmt(GOT_ERR_NO_OBJ, "%s %s",
1656 			    GOT_OBJ_LABEL_BLOB, id_str_prefix);
1657 			break;
1658 		case GOT_OBJ_TYPE_TREE:
1659 			err = got_error_fmt(GOT_ERR_NO_OBJ, "%s %s",
1660 			    GOT_OBJ_LABEL_TREE, id_str_prefix);
1661 			break;
1662 		case GOT_OBJ_TYPE_COMMIT:
1663 			err = got_error_fmt(GOT_ERR_NO_OBJ, "%s %s",
1664 			    GOT_OBJ_LABEL_COMMIT, id_str_prefix);
1665 			break;
1666 		case GOT_OBJ_TYPE_TAG:
1667 			err = got_error_fmt(GOT_ERR_NO_OBJ, "%s %s",
1668 			    GOT_OBJ_LABEL_TAG, id_str_prefix);
1669 			break;
1670 		default:
1671 			err = got_error_path(id_str_prefix, GOT_ERR_NO_OBJ);
1672 			break;
1673 		}
1674 	}
1675 
1676 	return err;
1677 }
1678 
1679 const struct got_error *
1680 got_repo_match_object_id(struct got_object_id **id, char **label,
1681     const char *id_str, int obj_type, struct got_reflist_head *refs,
1682     struct got_repository *repo)
1683 {
1684 	const struct got_error *err;
1685 	struct got_tag_object *tag;
1686 	struct got_reference *ref = NULL;
1687 
1688 	*id = NULL;
1689 	if (label)
1690 		*label = NULL;
1691 
1692 	if (refs) {
1693 		err = got_repo_object_match_tag(&tag, id_str, obj_type,
1694 		    refs, repo);
1695 		if (err == NULL) {
1696 			*id = got_object_id_dup(
1697 			    got_object_tag_get_object_id(tag));
1698 			if (*id == NULL)
1699 				err = got_error_from_errno("got_object_id_dup");
1700 			else if (label && asprintf(label, "refs/tags/%s",
1701 			    got_object_tag_get_name(tag)) == -1) {
1702 				err = got_error_from_errno("asprintf");
1703 				free(*id);
1704 				*id = NULL;
1705 			}
1706 			got_object_tag_close(tag);
1707 			return err;
1708 		} else if (err->code != GOT_ERR_OBJ_TYPE &&
1709 		    err->code != GOT_ERR_NO_OBJ)
1710 			return err;
1711 	}
1712 
1713 	err = got_repo_match_object_id_prefix(id, id_str, obj_type, repo);
1714 	if (err) {
1715 		if (err->code != GOT_ERR_BAD_OBJ_ID_STR)
1716 			return err;
1717 		err = got_ref_open(&ref, repo, id_str, 0);
1718 		if (err != NULL)
1719 			goto done;
1720 		if (label) {
1721 			*label = strdup(got_ref_get_name(ref));
1722 			if (*label == NULL) {
1723 				err = got_error_from_errno("strdup");
1724 				goto done;
1725 			}
1726 		}
1727 		err = got_ref_resolve(id, repo, ref);
1728 	} else if (label) {
1729 		err = got_object_id_str(label, *id);
1730 		if (*label == NULL) {
1731 			err = got_error_from_errno("strdup");
1732 			goto done;
1733 		}
1734 	}
1735 done:
1736 	if (ref)
1737 		got_ref_close(ref);
1738 	return err;
1739 }
1740 
1741 const struct got_error *
1742 got_repo_object_match_tag(struct got_tag_object **tag, const char *name,
1743     int obj_type, struct got_reflist_head *refs, struct got_repository *repo)
1744 {
1745 	const struct got_error *err = NULL;
1746 	struct got_reflist_entry *re;
1747 	struct got_object_id *tag_id;
1748 	int name_is_absolute = (strncmp(name, "refs/", 5) == 0);
1749 
1750 	*tag = NULL;
1751 
1752 	TAILQ_FOREACH(re, refs, entry) {
1753 		const char *refname;
1754 		refname = got_ref_get_name(re->ref);
1755 		if (got_ref_is_symbolic(re->ref))
1756 			continue;
1757 		if (strncmp(refname, "refs/tags/", 10) != 0)
1758 			continue;
1759 		if (!name_is_absolute)
1760 			refname += strlen("refs/tags/");
1761 		if (strcmp(refname, name) != 0)
1762 			continue;
1763 		err = got_ref_resolve(&tag_id, repo, re->ref);
1764 		if (err)
1765 			break;
1766 		err = got_object_open_as_tag(tag, repo, tag_id);
1767 		free(tag_id);
1768 		if (err)
1769 			break;
1770 		if (obj_type == GOT_OBJ_TYPE_ANY ||
1771 		    got_object_tag_get_object_type(*tag) == obj_type)
1772 			break;
1773 		got_object_tag_close(*tag);
1774 		*tag = NULL;
1775 	}
1776 
1777 	if (err == NULL && *tag == NULL)
1778 		err = got_error_fmt(GOT_ERR_NO_OBJ, "%s %s",
1779 		    GOT_OBJ_LABEL_TAG, name);
1780 	return err;
1781 }
1782 
1783 static const struct got_error *
1784 alloc_added_blob_tree_entry(struct got_tree_entry **new_te,
1785     const char *name, mode_t mode, struct got_object_id *blob_id)
1786 {
1787 	const struct got_error *err = NULL;
1788 
1789 	 *new_te = NULL;
1790 
1791 	*new_te = calloc(1, sizeof(**new_te));
1792 	if (*new_te == NULL)
1793 		return got_error_from_errno("calloc");
1794 
1795 	if (strlcpy((*new_te)->name, name, sizeof((*new_te)->name)) >=
1796 	    sizeof((*new_te)->name)) {
1797 		err = got_error(GOT_ERR_NO_SPACE);
1798 		goto done;
1799 	}
1800 
1801 	if (S_ISLNK(mode)) {
1802 		(*new_te)->mode = S_IFLNK;
1803 	} else {
1804 		(*new_te)->mode = S_IFREG;
1805 		(*new_te)->mode |= (mode & (S_IRWXU | S_IRWXG | S_IRWXO));
1806 	}
1807 	memcpy(&(*new_te)->id, blob_id, sizeof((*new_te)->id));
1808 done:
1809 	if (err && *new_te) {
1810 		free(*new_te);
1811 		*new_te = NULL;
1812 	}
1813 	return err;
1814 }
1815 
1816 static const struct got_error *
1817 import_file(struct got_tree_entry **new_te, struct dirent *de,
1818     const char *path, struct got_repository *repo)
1819 {
1820 	const struct got_error *err;
1821 	struct got_object_id *blob_id = NULL;
1822 	char *filepath;
1823 	struct stat sb;
1824 
1825 	if (asprintf(&filepath, "%s%s%s", path,
1826 	    path[0] == '\0' ? "" : "/", de->d_name) == -1)
1827 		return got_error_from_errno("asprintf");
1828 
1829 	if (lstat(filepath, &sb) != 0) {
1830 		err = got_error_from_errno2("lstat", path);
1831 		goto done;
1832 	}
1833 
1834 	err = got_object_blob_create(&blob_id, filepath, repo);
1835 	if (err)
1836 		goto done;
1837 
1838 	err = alloc_added_blob_tree_entry(new_te, de->d_name, sb.st_mode,
1839 	    blob_id);
1840 done:
1841 	free(filepath);
1842 	if (err)
1843 		free(blob_id);
1844 	return err;
1845 }
1846 
1847 static const struct got_error *
1848 insert_tree_entry(struct got_tree_entry *new_te,
1849     struct got_pathlist_head *paths)
1850 {
1851 	const struct got_error *err = NULL;
1852 	struct got_pathlist_entry *new_pe;
1853 
1854 	err = got_pathlist_insert(&new_pe, paths, new_te->name, new_te);
1855 	if (err)
1856 		return err;
1857 	if (new_pe == NULL)
1858 		return got_error(GOT_ERR_TREE_DUP_ENTRY);
1859 	return NULL;
1860 }
1861 
1862 static const struct got_error *write_tree(struct got_object_id **,
1863     const char *, struct got_pathlist_head *, struct got_repository *,
1864     got_repo_import_cb progress_cb, void *progress_arg);
1865 
1866 static const struct got_error *
1867 import_subdir(struct got_tree_entry **new_te, struct dirent *de,
1868     const char *path, struct got_pathlist_head *ignores,
1869     struct got_repository *repo,
1870     got_repo_import_cb progress_cb, void *progress_arg)
1871 {
1872 	const struct got_error *err;
1873 	struct got_object_id *id = NULL;
1874 	char *subdirpath;
1875 
1876 	if (asprintf(&subdirpath, "%s%s%s", path,
1877 	    path[0] == '\0' ? "" : "/", de->d_name) == -1)
1878 		return got_error_from_errno("asprintf");
1879 
1880 	(*new_te) = calloc(1, sizeof(**new_te));
1881 	if (*new_te == NULL)
1882 		return got_error_from_errno("calloc");
1883 	(*new_te)->mode = S_IFDIR;
1884 	if (strlcpy((*new_te)->name, de->d_name, sizeof((*new_te)->name)) >=
1885 	    sizeof((*new_te)->name)) {
1886 		err = got_error(GOT_ERR_NO_SPACE);
1887 		goto done;
1888 	}
1889 	err = write_tree(&id, subdirpath, ignores,  repo,
1890 	    progress_cb, progress_arg);
1891 	if (err)
1892 		goto done;
1893 	memcpy(&(*new_te)->id, id, sizeof((*new_te)->id));
1894 	
1895 done:
1896 	free(id);
1897 	free(subdirpath);
1898 	if (err) {
1899 		free(*new_te);
1900 		*new_te = NULL;
1901 	}
1902 	return err;
1903 }
1904 
1905 static const struct got_error *
1906 write_tree(struct got_object_id **new_tree_id, const char *path_dir,
1907     struct got_pathlist_head *ignores, struct got_repository *repo,
1908     got_repo_import_cb progress_cb, void *progress_arg)
1909 {
1910 	const struct got_error *err = NULL;
1911 	DIR *dir;
1912 	struct dirent *de;
1913 	int nentries;
1914 	struct got_tree_entry *new_te = NULL;
1915 	struct got_pathlist_head paths;
1916 	struct got_pathlist_entry *pe;
1917 
1918 	*new_tree_id = NULL;
1919 
1920 	TAILQ_INIT(&paths);
1921 
1922 	dir = opendir(path_dir);
1923 	if (dir == NULL) {
1924 		err = got_error_from_errno2("opendir", path_dir);
1925 		goto done;
1926 	}
1927 
1928 	nentries = 0;
1929 	while ((de = readdir(dir)) != NULL) {
1930 		int ignore = 0;
1931 		int type;
1932 
1933 		if (strcmp(de->d_name, ".") == 0 ||
1934 		    strcmp(de->d_name, "..") == 0)
1935 			continue;
1936 
1937 		TAILQ_FOREACH(pe, ignores, entry) {
1938 			if (fnmatch(pe->path, de->d_name, 0) == 0) {
1939 				ignore = 1;
1940 				break;
1941 			}
1942 		}
1943 		if (ignore)
1944 			continue;
1945 
1946 		err = got_path_dirent_type(&type, path_dir, de);
1947 		if (err)
1948 			goto done;
1949 
1950 		if (type == DT_DIR) {
1951 			err = import_subdir(&new_te, de, path_dir,
1952 			    ignores, repo, progress_cb, progress_arg);
1953 			if (err) {
1954 				if (err->code != GOT_ERR_NO_TREE_ENTRY)
1955 					goto done;
1956 				err = NULL;
1957 				continue;
1958 			}
1959 		} else if (type == DT_REG || type == DT_LNK) {
1960 			err = import_file(&new_te, de, path_dir, repo);
1961 			if (err)
1962 				goto done;
1963 		} else
1964 			continue;
1965 
1966 		err = insert_tree_entry(new_te, &paths);
1967 		if (err)
1968 			goto done;
1969 		nentries++;
1970 	}
1971 
1972 	if (TAILQ_EMPTY(&paths)) {
1973 		err = got_error_msg(GOT_ERR_NO_TREE_ENTRY,
1974 		    "cannot create tree without any entries");
1975 		goto done;
1976 	}
1977 
1978 	TAILQ_FOREACH(pe, &paths, entry) {
1979 		struct got_tree_entry *te = pe->data;
1980 		char *path;
1981 		if (!S_ISREG(te->mode) && !S_ISLNK(te->mode))
1982 			continue;
1983 		if (asprintf(&path, "%s/%s", path_dir, pe->path) == -1) {
1984 			err = got_error_from_errno("asprintf");
1985 			goto done;
1986 		}
1987 		err = (*progress_cb)(progress_arg, path);
1988 		free(path);
1989 		if (err)
1990 			goto done;
1991 	}
1992 
1993 	err = got_object_tree_create(new_tree_id, &paths, nentries, repo);
1994 done:
1995 	if (dir)
1996 		closedir(dir);
1997 	got_pathlist_free(&paths);
1998 	return err;
1999 }
2000 
2001 const struct got_error *
2002 got_repo_import(struct got_object_id **new_commit_id, const char *path_dir,
2003     const char *logmsg, const char *author, struct got_pathlist_head *ignores,
2004     struct got_repository *repo, got_repo_import_cb progress_cb,
2005     void *progress_arg)
2006 {
2007 	const struct got_error *err;
2008 	struct got_object_id *new_tree_id;
2009 
2010 	err = write_tree(&new_tree_id, path_dir, ignores, repo,
2011 	    progress_cb, progress_arg);
2012 	if (err)
2013 		return err;
2014 
2015 	err = got_object_commit_create(new_commit_id, new_tree_id, NULL, 0,
2016 	    author, time(NULL), author, time(NULL), logmsg, repo);
2017 	free(new_tree_id);
2018 	return err;
2019 }
2020 
2021 const struct got_error *
2022 got_repo_get_loose_object_info(int *nobjects, off_t *ondisk_size,
2023     struct got_repository *repo)
2024 {
2025 	const struct got_error *err = NULL;
2026 	char *path_objects = NULL, *path = NULL;
2027 	DIR *dir = NULL;
2028 	struct got_object_id id;
2029 	int i;
2030 
2031 	*nobjects = 0;
2032 	*ondisk_size = 0;
2033 
2034 	path_objects = got_repo_get_path_objects(repo);
2035 	if (path_objects == NULL)
2036 		return got_error_from_errno("got_repo_get_path_objects");
2037 
2038 	for (i = 0; i <= 0xff; i++) {
2039 		struct dirent *dent;
2040 
2041 		if (asprintf(&path, "%s/%.2x", path_objects, i) == -1) {
2042 			err = got_error_from_errno("asprintf");
2043 			break;
2044 		}
2045 
2046 		dir = opendir(path);
2047 		if (dir == NULL) {
2048 			if (errno == ENOENT) {
2049 				err = NULL;
2050 				continue;
2051 			}
2052 			err = got_error_from_errno2("opendir", path);
2053 			break;
2054 		}
2055 
2056 		while ((dent = readdir(dir)) != NULL) {
2057 			char *id_str;
2058 			int fd;
2059 			struct stat sb;
2060 
2061 			if (strcmp(dent->d_name, ".") == 0 ||
2062 			    strcmp(dent->d_name, "..") == 0)
2063 				continue;
2064 
2065 			if (asprintf(&id_str, "%.2x%s", i, dent->d_name) == -1) {
2066 				err = got_error_from_errno("asprintf");
2067 				goto done;
2068 			}
2069 
2070 			if (!got_parse_sha1_digest(id.sha1, id_str)) {
2071 				free(id_str);
2072 				continue;
2073 			}
2074 			free(id_str);
2075 
2076 			err = got_object_open_loose_fd(&fd, &id, repo);
2077 			if (err)
2078 				goto done;
2079 
2080 			if (fstat(fd, &sb) == -1) {
2081 				err = got_error_from_errno("fstat");
2082 				close(fd);
2083 				goto done;
2084 			}
2085 			(*nobjects)++;
2086 			(*ondisk_size) += sb.st_size;
2087 
2088 			if (close(fd) == -1) {
2089 				err = got_error_from_errno("close");
2090 				goto done;
2091 			}
2092 		}
2093 
2094 		if (closedir(dir) != 0) {
2095 			err = got_error_from_errno("closedir");
2096 			goto done;
2097 		}
2098 		dir = NULL;
2099 
2100 		free(path);
2101 		path = NULL;
2102 	}
2103 done:
2104 	if (dir && closedir(dir) != 0 && err == NULL)
2105 		err = got_error_from_errno("closedir");
2106 
2107 	if (err) {
2108 		*nobjects = 0;
2109 		*ondisk_size = 0;
2110 	}
2111 	free(path_objects);
2112 	free(path);
2113 	return err;
2114 }
2115 
2116 const struct got_error *
2117 got_repo_get_packfile_info(int *npackfiles, int *nobjects,
2118     off_t *total_packsize, struct got_repository *repo)
2119 {
2120 	const struct got_error *err = NULL;
2121 	DIR *packdir = NULL;
2122 	struct dirent *dent;
2123 	struct got_packidx *packidx = NULL;
2124 	char *path_packidx;
2125 	char *path_packfile;
2126 	int packdir_fd;
2127 	struct stat sb;
2128 
2129 	*npackfiles = 0;
2130 	*nobjects = 0;
2131 	*total_packsize = 0;
2132 
2133 	packdir_fd = openat(got_repo_get_fd(repo),
2134 	    GOT_OBJECTS_PACK_DIR, O_DIRECTORY);
2135 	if (packdir_fd == -1) {
2136 		return got_error_from_errno_fmt("openat: %s/%s",
2137 		    got_repo_get_path_git_dir(repo),
2138 		    GOT_OBJECTS_PACK_DIR);
2139 	}
2140 
2141 	packdir = fdopendir(packdir_fd);
2142 	if (packdir == NULL) {
2143 		err = got_error_from_errno("fdopendir");
2144 		goto done;
2145 	}
2146 
2147 	while ((dent = readdir(packdir)) != NULL) {
2148 		if (!got_repo_is_packidx_filename(dent->d_name,
2149 		    strlen(dent->d_name)))
2150 			continue;
2151 
2152 		if (asprintf(&path_packidx, "%s/%s", GOT_OBJECTS_PACK_DIR,
2153 		    dent->d_name) == -1) {
2154 			err = got_error_from_errno("asprintf");
2155 			goto done;
2156 		}
2157 
2158 		err = got_packidx_open(&packidx, got_repo_get_fd(repo),
2159 		    path_packidx, 0);
2160 		free(path_packidx);
2161 		if (err)
2162 			goto done;
2163 
2164 		if (fstat(packidx->fd, &sb) == -1)
2165 			goto done;
2166 		*total_packsize += sb.st_size;
2167 
2168 		err = got_packidx_get_packfile_path(&path_packfile,
2169 		    packidx->path_packidx);
2170 		if (err)
2171 			goto done;
2172 
2173 		if (fstatat(got_repo_get_fd(repo), path_packfile, &sb,
2174 		    0) == -1) {
2175 			free(path_packfile);
2176 			goto done;
2177 		}
2178 		free(path_packfile);
2179 		*total_packsize += sb.st_size;
2180 
2181 		*nobjects += be32toh(packidx->hdr.fanout_table[0xff]);
2182 
2183 		(*npackfiles)++;
2184 
2185 		got_packidx_close(packidx);
2186 		packidx = NULL;
2187 	}
2188 done:
2189 	if (packidx)
2190 		got_packidx_close(packidx);
2191 	if (packdir && closedir(packdir) != 0 && err == NULL)
2192 		err = got_error_from_errno("closedir");
2193 	if (err) {
2194 		*npackfiles = 0;
2195 		*nobjects = 0;
2196 		*total_packsize = 0;
2197 	}
2198 	return err;
2199 }
2200 
2201 RB_GENERATE(got_packidx_bloom_filter_tree, got_packidx_bloom_filter, entry,
2202     got_packidx_bloom_filter_cmp);