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