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/queue.h>
19 #include <sys/tree.h>
20 #include <sys/uio.h>
21 #include <sys/socket.h>
22 #include <sys/stat.h>
23 #include <sys/mman.h>
24 #include <sys/resource.h>
25 
26 #include <ctype.h>
27 #include <fcntl.h>
28 #include <fnmatch.h>
29 #include <limits.h>
30 #include <dirent.h>
31 #include <stdlib.h>
32 #include <stdio.h>
33 #include <string.h>
34 #include <time.h>
35 #include <unistd.h>
36 #include <zlib.h>
37 #include <errno.h>
38 #include <libgen.h>
39 #include <stdint.h>
40 #include <uuid.h>
41 
42 #include "bloom.h"
43 
44 #include "got_error.h"
45 #include "got_reference.h"
46 #include "got_repository.h"
47 #include "got_path.h"
48 #include "got_cancel.h"
49 #include "got_object.h"
50 
51 #include "got_lib_delta.h"
52 #include "got_lib_inflate.h"
53 #include "got_lib_object.h"
54 #include "got_lib_object_parse.h"
55 #include "got_lib_object_create.h"
56 #include "got_lib_pack.h"
57 #include "got_lib_privsep.h"
58 #include "got_lib_sha1.h"
59 #include "got_lib_object_cache.h"
60 #include "got_lib_repository.h"
61 #include "got_lib_gotconfig.h"
62 
63 #ifndef nitems
64 #define nitems(_a) (sizeof(_a) / sizeof((_a)[0]))
65 #endif
66 
67 RB_PROTOTYPE(got_packidx_bloom_filter_tree, got_packidx_bloom_filter, entry,
68     got_packidx_bloom_filter_cmp);
69 
70 const char *
71 got_repo_get_path(struct got_repository *repo)
72 {
73 	return repo->path;
74 }
75 
76 const char *
77 got_repo_get_path_git_dir(struct got_repository *repo)
78 {
79 	return repo->path_git_dir;
80 }
81 
82 int
83 got_repo_get_fd(struct got_repository *repo)
84 {
85 	return repo->gitdir_fd;
86 }
87 
88 const char *
89 got_repo_get_gitconfig_author_name(struct got_repository *repo)
90 {
91 	return repo->gitconfig_author_name;
92 }
93 
94 const char *
95 got_repo_get_gitconfig_author_email(struct got_repository *repo)
96 {
97 	return repo->gitconfig_author_email;
98 }
99 
100 const char *
101 got_repo_get_global_gitconfig_author_name(struct got_repository *repo)
102 {
103 	return repo->global_gitconfig_author_name;
104 }
105 
106 const char *
107 got_repo_get_global_gitconfig_author_email(struct got_repository *repo)
108 {
109 	return repo->global_gitconfig_author_email;
110 }
111 
112 const char *
113 got_repo_get_gitconfig_owner(struct got_repository *repo)
114 {
115 	return repo->gitconfig_owner;
116 }
117 
118 void
119 got_repo_get_gitconfig_extensions(char ***extensions, int *nextensions,
120     struct got_repository *repo)
121 {
122 	*extensions = repo->extensions;
123 	*nextensions = repo->nextensions;
124 }
125 
126 int
127 got_repo_is_bare(struct got_repository *repo)
128 {
129 	return (strcmp(repo->path, repo->path_git_dir) == 0);
130 }
131 
132 static char *
133 get_path_git_child(struct got_repository *repo, const char *basename)
134 {
135 	char *path_child;
136 
137 	if (asprintf(&path_child, "%s/%s", repo->path_git_dir,
138 	    basename) == -1)
139 		return NULL;
140 
141 	return path_child;
142 }
143 
144 char *
145 got_repo_get_path_objects(struct got_repository *repo)
146 {
147 	return get_path_git_child(repo, GOT_OBJECTS_DIR);
148 }
149 
150 char *
151 got_repo_get_path_objects_pack(struct got_repository *repo)
152 {
153 	return get_path_git_child(repo, GOT_OBJECTS_PACK_DIR);
154 }
155 
156 char *
157 got_repo_get_path_refs(struct got_repository *repo)
158 {
159 	return get_path_git_child(repo, GOT_REFS_DIR);
160 }
161 
162 char *
163 got_repo_get_path_packed_refs(struct got_repository *repo)
164 {
165 	return get_path_git_child(repo, GOT_PACKED_REFS_FILE);
166 }
167 
168 static char *
169 get_path_head(struct got_repository *repo)
170 {
171 	return get_path_git_child(repo, GOT_HEAD_FILE);
172 }
173 
174 char *
175 got_repo_get_path_gitconfig(struct got_repository *repo)
176 {
177 	return get_path_git_child(repo, GOT_GITCONFIG);
178 }
179 
180 char *
181 got_repo_get_path_gotconfig(struct got_repository *repo)
182 {
183 	return get_path_git_child(repo, GOT_GOTCONFIG_FILENAME);
184 }
185 
186 const struct got_gotconfig *
187 got_repo_get_gotconfig(struct got_repository *repo)
188 {
189 	return repo->gotconfig;
190 }
191 
192 void
193 got_repo_get_gitconfig_remotes(int *nremotes,
194     const struct got_remote_repo **remotes, struct got_repository *repo)
195 {
196 	*nremotes = repo->ngitconfig_remotes;
197 	*remotes = repo->gitconfig_remotes;
198 }
199 
200 static int
201 is_git_repo(struct got_repository *repo)
202 {
203 	const char *path_git = got_repo_get_path_git_dir(repo);
204 	char *path_objects = got_repo_get_path_objects(repo);
205 	char *path_refs = got_repo_get_path_refs(repo);
206 	char *path_head = get_path_head(repo);
207 	int ret = 0;
208 	struct stat sb;
209 	struct got_reference *head_ref;
210 
211 	if (lstat(path_git, &sb) == -1)
212 		goto done;
213 	if (!S_ISDIR(sb.st_mode))
214 		goto done;
215 
216 	if (lstat(path_objects, &sb) == -1)
217 		goto done;
218 	if (!S_ISDIR(sb.st_mode))
219 		goto done;
220 
221 	if (lstat(path_refs, &sb) == -1)
222 		goto done;
223 	if (!S_ISDIR(sb.st_mode))
224 		goto done;
225 
226 	if (lstat(path_head, &sb) == -1)
227 		goto done;
228 	if (!S_ISREG(sb.st_mode))
229 		goto done;
230 
231 	/* Check if the HEAD reference can be opened. */
232 	if (got_ref_open(&head_ref, repo, GOT_REF_HEAD, 0) != NULL)
233 		goto done;
234 	got_ref_close(head_ref);
235 
236 	ret = 1;
237 done:
238 	free(path_objects);
239 	free(path_refs);
240 	free(path_head);
241 	return ret;
242 
243 }
244 
245 const struct got_error *
246 got_repo_cache_object(struct got_repository *repo, struct got_object_id *id,
247     struct got_object *obj)
248 {
249 #ifndef GOT_NO_OBJ_CACHE
250 	const struct got_error *err = NULL;
251 	err = got_object_cache_add(&repo->objcache, id, obj);
252 	if (err) {
253 		if (err->code == GOT_ERR_OBJ_EXISTS ||
254 		    err->code == GOT_ERR_OBJ_TOO_LARGE)
255 			err = NULL;
256 		return err;
257 	}
258 	obj->refcnt++;
259 #endif
260 	return NULL;
261 }
262 
263 struct got_object *
264 got_repo_get_cached_object(struct got_repository *repo,
265     struct got_object_id *id)
266 {
267 	return (struct got_object *)got_object_cache_get(&repo->objcache, id);
268 }
269 
270 const struct got_error *
271 got_repo_cache_tree(struct got_repository *repo, struct got_object_id *id,
272     struct got_tree_object *tree)
273 {
274 #ifndef GOT_NO_OBJ_CACHE
275 	const struct got_error *err = NULL;
276 	err = got_object_cache_add(&repo->treecache, id, tree);
277 	if (err) {
278 		if (err->code == GOT_ERR_OBJ_EXISTS ||
279 		    err->code == GOT_ERR_OBJ_TOO_LARGE)
280 			err = NULL;
281 		return err;
282 	}
283 	tree->refcnt++;
284 #endif
285 	return NULL;
286 }
287 
288 struct got_tree_object *
289 got_repo_get_cached_tree(struct got_repository *repo,
290     struct got_object_id *id)
291 {
292 	return (struct got_tree_object *)got_object_cache_get(
293 	    &repo->treecache, id);
294 }
295 
296 const struct got_error *
297 got_repo_cache_commit(struct got_repository *repo, struct got_object_id *id,
298     struct got_commit_object *commit)
299 {
300 #ifndef GOT_NO_OBJ_CACHE
301 	const struct got_error *err = NULL;
302 	err = got_object_cache_add(&repo->commitcache, id, commit);
303 	if (err) {
304 		if (err->code == GOT_ERR_OBJ_EXISTS ||
305 		    err->code == GOT_ERR_OBJ_TOO_LARGE)
306 			err = NULL;
307 		return err;
308 	}
309 	commit->refcnt++;
310 #endif
311 	return NULL;
312 }
313 
314 struct got_commit_object *
315 got_repo_get_cached_commit(struct got_repository *repo,
316     struct got_object_id *id)
317 {
318 	return (struct got_commit_object *)got_object_cache_get(
319 	    &repo->commitcache, id);
320 }
321 
322 const struct got_error *
323 got_repo_cache_tag(struct got_repository *repo, struct got_object_id *id,
324     struct got_tag_object *tag)
325 {
326 #ifndef GOT_NO_OBJ_CACHE
327 	const struct got_error *err = NULL;
328 	err = got_object_cache_add(&repo->tagcache, id, tag);
329 	if (err) {
330 		if (err->code == GOT_ERR_OBJ_EXISTS ||
331 		    err->code == GOT_ERR_OBJ_TOO_LARGE)
332 			err = NULL;
333 		return err;
334 	}
335 	tag->refcnt++;
336 #endif
337 	return NULL;
338 }
339 
340 struct got_tag_object *
341 got_repo_get_cached_tag(struct got_repository *repo, struct got_object_id *id)
342 {
343 	return (struct got_tag_object *)got_object_cache_get(
344 	    &repo->tagcache, id);
345 }
346 
347 const struct got_error *
348 got_repo_cache_raw_object(struct got_repository *repo, struct got_object_id *id,
349     struct got_raw_object *raw)
350 {
351 #ifndef GOT_NO_OBJ_CACHE
352 	const struct got_error *err = NULL;
353 	err = got_object_cache_add(&repo->rawcache, id, raw);
354 	if (err) {
355 		if (err->code == GOT_ERR_OBJ_EXISTS ||
356 		    err->code == GOT_ERR_OBJ_TOO_LARGE)
357 			err = NULL;
358 		return err;
359 	}
360 	raw->refcnt++;
361 #endif
362 	return NULL;
363 }
364 
365 
366 struct got_raw_object *
367 got_repo_get_cached_raw_object(struct got_repository *repo,
368     struct got_object_id *id)
369 {
370 	return (struct got_raw_object *)got_object_cache_get(&repo->rawcache, id);
371 }
372 
373 
374 static const struct got_error *
375 open_repo(struct got_repository *repo, const char *path)
376 {
377 	const struct got_error *err = NULL;
378 
379 	repo->gitdir_fd = -1;
380 
381 	/* bare git repository? */
382 	repo->path_git_dir = strdup(path);
383 	if (repo->path_git_dir == NULL)
384 		return got_error_from_errno("strdup");
385 	if (is_git_repo(repo)) {
386 		repo->path = strdup(repo->path_git_dir);
387 		if (repo->path == NULL) {
388 			err = got_error_from_errno("strdup");
389 			goto done;
390 		}
391 		repo->gitdir_fd = open(repo->path_git_dir, O_DIRECTORY);
392 		if (repo->gitdir_fd == -1) {
393 			err = got_error_from_errno2("open",
394 			    repo->path_git_dir);
395 			goto done;
396 		}
397 		return NULL;
398 	}
399 
400 	/* git repository with working tree? */
401 	free(repo->path_git_dir);
402 	repo->path_git_dir = NULL;
403 	if (asprintf(&repo->path_git_dir, "%s/%s", path, GOT_GIT_DIR) == -1) {
404 		err = got_error_from_errno("asprintf");
405 		goto done;
406 	}
407 	if (is_git_repo(repo)) {
408 		repo->path = strdup(path);
409 		if (repo->path == NULL) {
410 			err = got_error_from_errno("strdup");
411 			goto done;
412 		}
413 		repo->gitdir_fd = open(repo->path_git_dir, O_DIRECTORY);
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);
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);
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, O_RDONLY | O_NOFOLLOW);
1233 	if (*fd == -1)
1234 		return got_error_from_errno_fmt("openat: %s/%s",
1235 		    got_repo_get_path_git_dir(repo), relpath);
1236 
1237 	if (packidx) {
1238 		err = read_packfile_hdr(*fd, packidx);
1239 		if (err) {
1240 			close(*fd);
1241 			*fd = -1;
1242 		}
1243 	}
1244 
1245 	return err;
1246 }
1247 
1248 const struct got_error *
1249 got_repo_cache_pack(struct got_pack **packp, struct got_repository *repo,
1250     const char *path_packfile, struct got_packidx *packidx)
1251 {
1252 	const struct got_error *err = NULL;
1253 	struct got_pack *pack = NULL;
1254 	struct stat sb;
1255 	size_t i;
1256 
1257 	if (packp)
1258 		*packp = NULL;
1259 
1260 	for (i = 0; i < repo->pack_cache_size; i++) {
1261 		pack = &repo->packs[i];
1262 		if (pack->path_packfile == NULL)
1263 			break;
1264 		if (strcmp(pack->path_packfile, path_packfile) == 0)
1265 			return got_error(GOT_ERR_CACHE_DUP_ENTRY);
1266 	}
1267 
1268 	if (i == repo->pack_cache_size) {
1269 		err = got_pack_close(&repo->packs[i - 1]);
1270 		if (err)
1271 			return err;
1272 		memmove(&repo->packs[1], &repo->packs[0],
1273 		    sizeof(repo->packs) - sizeof(repo->packs[0]));
1274 		i = 0;
1275 	}
1276 
1277 	pack = &repo->packs[i];
1278 
1279 	pack->path_packfile = strdup(path_packfile);
1280 	if (pack->path_packfile == NULL) {
1281 		err = got_error_from_errno("strdup");
1282 		goto done;
1283 	}
1284 
1285 	err = open_packfile(&pack->fd, repo, path_packfile, packidx);
1286 	if (err)
1287 		goto done;
1288 
1289 	if (fstat(pack->fd, &sb) != 0) {
1290 		err = got_error_from_errno("fstat");
1291 		goto done;
1292 	}
1293 	pack->filesize = sb.st_size;
1294 
1295 	pack->privsep_child = NULL;
1296 
1297 #ifndef GOT_PACK_NO_MMAP
1298 	pack->map = mmap(NULL, pack->filesize, PROT_READ, MAP_PRIVATE,
1299 	    pack->fd, 0);
1300 	if (pack->map == MAP_FAILED) {
1301 		if (errno != ENOMEM) {
1302 			err = got_error_from_errno("mmap");
1303 			goto done;
1304 		}
1305 		pack->map = NULL; /* fall back to read(2) */
1306 	}
1307 #endif
1308 done:
1309 	if (err) {
1310 		if (pack) {
1311 			free(pack->path_packfile);
1312 			memset(pack, 0, sizeof(*pack));
1313 		}
1314 	} else if (packp)
1315 		*packp = pack;
1316 	return err;
1317 }
1318 
1319 struct got_pack *
1320 got_repo_get_cached_pack(struct got_repository *repo, const char *path_packfile)
1321 {
1322 	struct got_pack *pack = NULL;
1323 	size_t i;
1324 
1325 	for (i = 0; i < repo->pack_cache_size; i++) {
1326 		pack = &repo->packs[i];
1327 		if (pack->path_packfile == NULL)
1328 			break;
1329 		if (strcmp(pack->path_packfile, path_packfile) == 0)
1330 			return pack;
1331 	}
1332 
1333 	return NULL;
1334 }
1335 
1336 const struct got_error *
1337 got_repo_init(const char *repo_path)
1338 {
1339 	const struct got_error *err = NULL;
1340 	const char *dirnames[] = {
1341 		GOT_OBJECTS_DIR,
1342 		GOT_OBJECTS_PACK_DIR,
1343 		GOT_REFS_DIR,
1344 	};
1345 	const char *description_str = "Unnamed repository; "
1346 	    "edit this file 'description' to name the repository.";
1347 	const char *headref_str = "ref: refs/heads/main";
1348 	const char *gitconfig_str = "[core]\n"
1349 	    "\trepositoryformatversion = 0\n"
1350 	    "\tfilemode = true\n"
1351 	    "\tbare = true\n";
1352 	char *path;
1353 	size_t i;
1354 
1355 	if (!got_path_dir_is_empty(repo_path))
1356 		return got_error(GOT_ERR_DIR_NOT_EMPTY);
1357 
1358 	for (i = 0; i < nitems(dirnames); i++) {
1359 		if (asprintf(&path, "%s/%s", repo_path, dirnames[i]) == -1) {
1360 			return got_error_from_errno("asprintf");
1361 		}
1362 		err = got_path_mkdir(path);
1363 		free(path);
1364 		if (err)
1365 			return err;
1366 	}
1367 
1368 	if (asprintf(&path, "%s/%s", repo_path, "description") == -1)
1369 		return got_error_from_errno("asprintf");
1370 	err = got_path_create_file(path, description_str);
1371 	free(path);
1372 	if (err)
1373 		return err;
1374 
1375 	if (asprintf(&path, "%s/%s", repo_path, GOT_HEAD_FILE) == -1)
1376 		return got_error_from_errno("asprintf");
1377 	err = got_path_create_file(path, headref_str);
1378 	free(path);
1379 	if (err)
1380 		return err;
1381 
1382 	if (asprintf(&path, "%s/%s", repo_path, "config") == -1)
1383 		return got_error_from_errno("asprintf");
1384 	err = got_path_create_file(path, gitconfig_str);
1385 	free(path);
1386 	if (err)
1387 		return err;
1388 
1389 	return NULL;
1390 }
1391 
1392 static const struct got_error *
1393 match_packed_object(struct got_object_id **unique_id,
1394     struct got_repository *repo, const char *id_str_prefix, int obj_type)
1395 {
1396 	const struct got_error *err = NULL;
1397 	DIR *packdir = NULL;
1398 	struct dirent *dent;
1399 	char *path_packidx;
1400 	struct got_object_id_queue matched_ids;
1401 	int packdir_fd;
1402 
1403 	STAILQ_INIT(&matched_ids);
1404 
1405 	packdir_fd = openat(got_repo_get_fd(repo),
1406 	    GOT_OBJECTS_PACK_DIR, O_DIRECTORY);
1407 	if (packdir_fd == -1) {
1408 		if (errno != ENOENT)
1409 			err = got_error_from_errno2("openat", GOT_OBJECTS_PACK_DIR);
1410 		goto done;
1411 	}
1412 
1413 	packdir = fdopendir(packdir_fd);
1414 	if (packdir == NULL) {
1415 		err = got_error_from_errno("fdopendir");
1416 		goto done;
1417 	}
1418 
1419 	while ((dent = readdir(packdir)) != NULL) {
1420 		struct got_packidx *packidx;
1421 		struct got_object_qid *qid;
1422 
1423 		if (!got_repo_is_packidx_filename(dent->d_name,
1424 		    strlen(dent->d_name)))
1425 			continue;
1426 
1427 		if (asprintf(&path_packidx, "%s/%s", GOT_OBJECTS_PACK_DIR,
1428 		    dent->d_name) == -1) {
1429 			err = got_error_from_errno("strdup");
1430 			break;
1431 		}
1432 
1433 		err = got_packidx_open(&packidx, got_repo_get_fd(repo),
1434 		    path_packidx, 0);
1435 		free(path_packidx);
1436 		if (err)
1437 			break;
1438 
1439 		err = got_packidx_match_id_str_prefix(&matched_ids,
1440 		    packidx, id_str_prefix);
1441 		if (err) {
1442 			got_packidx_close(packidx);
1443 			break;
1444 		}
1445 		err = got_packidx_close(packidx);
1446 		if (err)
1447 			break;
1448 
1449 		STAILQ_FOREACH(qid, &matched_ids, entry) {
1450 			if (obj_type != GOT_OBJ_TYPE_ANY) {
1451 				int matched_type;
1452 				err = got_object_get_type(&matched_type, repo,
1453 				    qid->id);
1454 				if (err)
1455 					goto done;
1456 				if (matched_type != obj_type)
1457 					continue;
1458 			}
1459 			if (*unique_id == NULL) {
1460 				*unique_id = got_object_id_dup(qid->id);
1461 				if (*unique_id == NULL) {
1462 					err = got_error_from_errno("malloc");
1463 					goto done;
1464 				}
1465 			} else {
1466 				if (got_object_id_cmp(*unique_id, qid->id) == 0)
1467 					continue; /* packed multiple times */
1468 				err = got_error(GOT_ERR_AMBIGUOUS_ID);
1469 				goto done;
1470 			}
1471 		}
1472 	}
1473 done:
1474 	got_object_id_queue_free(&matched_ids);
1475 	if (packdir && closedir(packdir) != 0 && err == NULL)
1476 		err = got_error_from_errno("closedir");
1477 	if (err) {
1478 		free(*unique_id);
1479 		*unique_id = NULL;
1480 	}
1481 	return err;
1482 }
1483 
1484 static const struct got_error *
1485 match_loose_object(struct got_object_id **unique_id, const char *path_objects,
1486     const char *object_dir, const char *id_str_prefix, int obj_type,
1487     struct got_repository *repo)
1488 {
1489 	const struct got_error *err = NULL;
1490 	char *path;
1491 	DIR *dir = NULL;
1492 	struct dirent *dent;
1493 	struct got_object_id id;
1494 
1495 	if (asprintf(&path, "%s/%s", path_objects, object_dir) == -1) {
1496 		err = got_error_from_errno("asprintf");
1497 		goto done;
1498 	}
1499 
1500 	dir = opendir(path);
1501 	if (dir == NULL) {
1502 		if (errno == ENOENT) {
1503 			err = NULL;
1504 			goto done;
1505 		}
1506 		err = got_error_from_errno2("opendir", path);
1507 		goto done;
1508 	}
1509 	while ((dent = readdir(dir)) != NULL) {
1510 		char *id_str;
1511 		int cmp;
1512 
1513 		if (strcmp(dent->d_name, ".") == 0 ||
1514 		    strcmp(dent->d_name, "..") == 0)
1515 			continue;
1516 
1517 		if (asprintf(&id_str, "%s%s", object_dir, dent->d_name) == -1) {
1518 			err = got_error_from_errno("asprintf");
1519 			goto done;
1520 		}
1521 
1522 		if (!got_parse_sha1_digest(id.sha1, id_str))
1523 			continue;
1524 
1525 		/*
1526 		 * Directory entries do not necessarily appear in
1527 		 * sorted order, so we must iterate over all of them.
1528 		 */
1529 		cmp = strncmp(id_str, id_str_prefix, strlen(id_str_prefix));
1530 		if (cmp != 0) {
1531 			free(id_str);
1532 			continue;
1533 		}
1534 
1535 		if (*unique_id == NULL) {
1536 			if (obj_type != GOT_OBJ_TYPE_ANY) {
1537 				int matched_type;
1538 				err = got_object_get_type(&matched_type, repo,
1539 				    &id);
1540 				if (err)
1541 					goto done;
1542 				if (matched_type != obj_type)
1543 					continue;
1544 			}
1545 			*unique_id = got_object_id_dup(&id);
1546 			if (*unique_id == NULL) {
1547 				err = got_error_from_errno("got_object_id_dup");
1548 				free(id_str);
1549 				goto done;
1550 			}
1551 		} else {
1552 			if (got_object_id_cmp(*unique_id, &id) == 0)
1553 				continue; /* both packed and loose */
1554 			err = got_error(GOT_ERR_AMBIGUOUS_ID);
1555 			free(id_str);
1556 			goto done;
1557 		}
1558 	}
1559 done:
1560 	if (dir && closedir(dir) != 0 && err == NULL)
1561 		err = got_error_from_errno("closedir");
1562 	if (err) {
1563 		free(*unique_id);
1564 		*unique_id = NULL;
1565 	}
1566 	free(path);
1567 	return err;
1568 }
1569 
1570 const struct got_error *
1571 got_repo_match_object_id_prefix(struct got_object_id **id,
1572     const char *id_str_prefix, int obj_type, struct got_repository *repo)
1573 {
1574 	const struct got_error *err = NULL;
1575 	char *path_objects = got_repo_get_path_objects(repo);
1576 	char *object_dir = NULL;
1577 	size_t len;
1578 	int i;
1579 
1580 	*id = NULL;
1581 
1582 	for (i = 0; i < strlen(id_str_prefix); i++) {
1583 		if (isxdigit((unsigned char)id_str_prefix[i]))
1584 			continue;
1585 		return got_error_path(id_str_prefix, GOT_ERR_BAD_OBJ_ID_STR);
1586 	}
1587 
1588 	len = strlen(id_str_prefix);
1589 	if (len >= 2) {
1590 		err = match_packed_object(id, repo, id_str_prefix, obj_type);
1591 		if (err)
1592 			goto done;
1593 		object_dir = strndup(id_str_prefix, 2);
1594 		if (object_dir == NULL) {
1595 			err = got_error_from_errno("strdup");
1596 			goto done;
1597 		}
1598 		err = match_loose_object(id, path_objects, object_dir,
1599 		    id_str_prefix, obj_type, repo);
1600 	} else if (len == 1) {
1601 		int i;
1602 		for (i = 0; i < 0xf; i++) {
1603 			if (asprintf(&object_dir, "%s%.1x", id_str_prefix, i)
1604 			    == -1) {
1605 				err = got_error_from_errno("asprintf");
1606 				goto done;
1607 			}
1608 			err = match_packed_object(id, repo, object_dir,
1609 			    obj_type);
1610 			if (err)
1611 				goto done;
1612 			err = match_loose_object(id, path_objects, object_dir,
1613 			    id_str_prefix, obj_type, repo);
1614 			if (err)
1615 				goto done;
1616 		}
1617 	} else {
1618 		err = got_error_path(id_str_prefix, GOT_ERR_BAD_OBJ_ID_STR);
1619 		goto done;
1620 	}
1621 done:
1622 	free(object_dir);
1623 	if (err) {
1624 		free(*id);
1625 		*id = NULL;
1626 	} else if (*id == NULL) {
1627 		switch (obj_type) {
1628 		case GOT_OBJ_TYPE_BLOB:
1629 			err = got_error_fmt(GOT_ERR_NO_OBJ, "%s %s",
1630 			    GOT_OBJ_LABEL_BLOB, id_str_prefix);
1631 			break;
1632 		case GOT_OBJ_TYPE_TREE:
1633 			err = got_error_fmt(GOT_ERR_NO_OBJ, "%s %s",
1634 			    GOT_OBJ_LABEL_TREE, id_str_prefix);
1635 			break;
1636 		case GOT_OBJ_TYPE_COMMIT:
1637 			err = got_error_fmt(GOT_ERR_NO_OBJ, "%s %s",
1638 			    GOT_OBJ_LABEL_COMMIT, id_str_prefix);
1639 			break;
1640 		case GOT_OBJ_TYPE_TAG:
1641 			err = got_error_fmt(GOT_ERR_NO_OBJ, "%s %s",
1642 			    GOT_OBJ_LABEL_TAG, id_str_prefix);
1643 			break;
1644 		default:
1645 			err = got_error_path(id_str_prefix, GOT_ERR_NO_OBJ);
1646 			break;
1647 		}
1648 	}
1649 
1650 	return err;
1651 }
1652 
1653 const struct got_error *
1654 got_repo_match_object_id(struct got_object_id **id, char **label,
1655     const char *id_str, int obj_type, struct got_reflist_head *refs,
1656     struct got_repository *repo)
1657 {
1658 	const struct got_error *err;
1659 	struct got_tag_object *tag;
1660 	struct got_reference *ref = NULL;
1661 
1662 	*id = NULL;
1663 	if (label)
1664 		*label = NULL;
1665 
1666 	if (refs) {
1667 		err = got_repo_object_match_tag(&tag, id_str, obj_type,
1668 		    refs, repo);
1669 		if (err == NULL) {
1670 			*id = got_object_id_dup(
1671 			    got_object_tag_get_object_id(tag));
1672 			if (*id == NULL)
1673 				err = got_error_from_errno("got_object_id_dup");
1674 			else if (label && asprintf(label, "refs/tags/%s",
1675 			    got_object_tag_get_name(tag)) == -1) {
1676 				err = got_error_from_errno("asprintf");
1677 				free(*id);
1678 				*id = NULL;
1679 			}
1680 			got_object_tag_close(tag);
1681 			return err;
1682 		} else if (err->code != GOT_ERR_OBJ_TYPE &&
1683 		    err->code != GOT_ERR_NO_OBJ)
1684 			return err;
1685 	}
1686 
1687 	err = got_repo_match_object_id_prefix(id, id_str, obj_type, repo);
1688 	if (err) {
1689 		if (err->code != GOT_ERR_BAD_OBJ_ID_STR)
1690 			return err;
1691 		err = got_ref_open(&ref, repo, id_str, 0);
1692 		if (err != NULL)
1693 			goto done;
1694 		if (label) {
1695 			*label = strdup(got_ref_get_name(ref));
1696 			if (*label == NULL) {
1697 				err = got_error_from_errno("strdup");
1698 				goto done;
1699 			}
1700 		}
1701 		err = got_ref_resolve(id, repo, ref);
1702 	} else if (label) {
1703 		err = got_object_id_str(label, *id);
1704 		if (*label == NULL) {
1705 			err = got_error_from_errno("strdup");
1706 			goto done;
1707 		}
1708 	}
1709 done:
1710 	if (ref)
1711 		got_ref_close(ref);
1712 	return err;
1713 }
1714 
1715 const struct got_error *
1716 got_repo_object_match_tag(struct got_tag_object **tag, const char *name,
1717     int obj_type, struct got_reflist_head *refs, struct got_repository *repo)
1718 {
1719 	const struct got_error *err = NULL;
1720 	struct got_reflist_entry *re;
1721 	struct got_object_id *tag_id;
1722 	int name_is_absolute = (strncmp(name, "refs/", 5) == 0);
1723 
1724 	*tag = NULL;
1725 
1726 	TAILQ_FOREACH(re, refs, entry) {
1727 		const char *refname;
1728 		refname = got_ref_get_name(re->ref);
1729 		if (got_ref_is_symbolic(re->ref))
1730 			continue;
1731 		if (strncmp(refname, "refs/tags/", 10) != 0)
1732 			continue;
1733 		if (!name_is_absolute)
1734 			refname += strlen("refs/tags/");
1735 		if (strcmp(refname, name) != 0)
1736 			continue;
1737 		err = got_ref_resolve(&tag_id, repo, re->ref);
1738 		if (err)
1739 			break;
1740 		err = got_object_open_as_tag(tag, repo, tag_id);
1741 		free(tag_id);
1742 		if (err)
1743 			break;
1744 		if (obj_type == GOT_OBJ_TYPE_ANY ||
1745 		    got_object_tag_get_object_type(*tag) == obj_type)
1746 			break;
1747 		got_object_tag_close(*tag);
1748 		*tag = NULL;
1749 	}
1750 
1751 	if (err == NULL && *tag == NULL)
1752 		err = got_error_fmt(GOT_ERR_NO_OBJ, "%s %s",
1753 		    GOT_OBJ_LABEL_TAG, name);
1754 	return err;
1755 }
1756 
1757 static const struct got_error *
1758 alloc_added_blob_tree_entry(struct got_tree_entry **new_te,
1759     const char *name, mode_t mode, struct got_object_id *blob_id)
1760 {
1761 	const struct got_error *err = NULL;
1762 
1763 	 *new_te = NULL;
1764 
1765 	*new_te = calloc(1, sizeof(**new_te));
1766 	if (*new_te == NULL)
1767 		return got_error_from_errno("calloc");
1768 
1769 	if (strlcpy((*new_te)->name, name, sizeof((*new_te)->name)) >=
1770 	    sizeof((*new_te)->name)) {
1771 		err = got_error(GOT_ERR_NO_SPACE);
1772 		goto done;
1773 	}
1774 
1775 	if (S_ISLNK(mode)) {
1776 		(*new_te)->mode = S_IFLNK;
1777 	} else {
1778 		(*new_te)->mode = S_IFREG;
1779 		(*new_te)->mode |= (mode & (S_IRWXU | S_IRWXG | S_IRWXO));
1780 	}
1781 	memcpy(&(*new_te)->id, blob_id, sizeof((*new_te)->id));
1782 done:
1783 	if (err && *new_te) {
1784 		free(*new_te);
1785 		*new_te = NULL;
1786 	}
1787 	return err;
1788 }
1789 
1790 static const struct got_error *
1791 import_file(struct got_tree_entry **new_te, struct dirent *de,
1792     const char *path, struct got_repository *repo)
1793 {
1794 	const struct got_error *err;
1795 	struct got_object_id *blob_id = NULL;
1796 	char *filepath;
1797 	struct stat sb;
1798 
1799 	if (asprintf(&filepath, "%s%s%s", path,
1800 	    path[0] == '\0' ? "" : "/", de->d_name) == -1)
1801 		return got_error_from_errno("asprintf");
1802 
1803 	if (lstat(filepath, &sb) != 0) {
1804 		err = got_error_from_errno2("lstat", path);
1805 		goto done;
1806 	}
1807 
1808 	err = got_object_blob_create(&blob_id, filepath, repo);
1809 	if (err)
1810 		goto done;
1811 
1812 	err = alloc_added_blob_tree_entry(new_te, de->d_name, sb.st_mode,
1813 	    blob_id);
1814 done:
1815 	free(filepath);
1816 	if (err)
1817 		free(blob_id);
1818 	return err;
1819 }
1820 
1821 static const struct got_error *
1822 insert_tree_entry(struct got_tree_entry *new_te,
1823     struct got_pathlist_head *paths)
1824 {
1825 	const struct got_error *err = NULL;
1826 	struct got_pathlist_entry *new_pe;
1827 
1828 	err = got_pathlist_insert(&new_pe, paths, new_te->name, new_te);
1829 	if (err)
1830 		return err;
1831 	if (new_pe == NULL)
1832 		return got_error(GOT_ERR_TREE_DUP_ENTRY);
1833 	return NULL;
1834 }
1835 
1836 static const struct got_error *write_tree(struct got_object_id **,
1837     const char *, struct got_pathlist_head *, struct got_repository *,
1838     got_repo_import_cb progress_cb, void *progress_arg);
1839 
1840 static const struct got_error *
1841 import_subdir(struct got_tree_entry **new_te, struct dirent *de,
1842     const char *path, struct got_pathlist_head *ignores,
1843     struct got_repository *repo,
1844     got_repo_import_cb progress_cb, void *progress_arg)
1845 {
1846 	const struct got_error *err;
1847 	struct got_object_id *id = NULL;
1848 	char *subdirpath;
1849 
1850 	if (asprintf(&subdirpath, "%s%s%s", path,
1851 	    path[0] == '\0' ? "" : "/", de->d_name) == -1)
1852 		return got_error_from_errno("asprintf");
1853 
1854 	(*new_te) = calloc(1, sizeof(**new_te));
1855 	if (*new_te == NULL)
1856 		return got_error_from_errno("calloc");
1857 	(*new_te)->mode = S_IFDIR;
1858 	if (strlcpy((*new_te)->name, de->d_name, sizeof((*new_te)->name)) >=
1859 	    sizeof((*new_te)->name)) {
1860 		err = got_error(GOT_ERR_NO_SPACE);
1861 		goto done;
1862 	}
1863 	err = write_tree(&id, subdirpath, ignores,  repo,
1864 	    progress_cb, progress_arg);
1865 	if (err)
1866 		goto done;
1867 	memcpy(&(*new_te)->id, id, sizeof((*new_te)->id));
1868 	
1869 done:
1870 	free(id);
1871 	free(subdirpath);
1872 	if (err) {
1873 		free(*new_te);
1874 		*new_te = NULL;
1875 	}
1876 	return err;
1877 }
1878 
1879 static const struct got_error *
1880 write_tree(struct got_object_id **new_tree_id, const char *path_dir,
1881     struct got_pathlist_head *ignores, struct got_repository *repo,
1882     got_repo_import_cb progress_cb, void *progress_arg)
1883 {
1884 	const struct got_error *err = NULL;
1885 	DIR *dir;
1886 	struct dirent *de;
1887 	int nentries;
1888 	struct got_tree_entry *new_te = NULL;
1889 	struct got_pathlist_head paths;
1890 	struct got_pathlist_entry *pe;
1891 
1892 	*new_tree_id = NULL;
1893 
1894 	TAILQ_INIT(&paths);
1895 
1896 	dir = opendir(path_dir);
1897 	if (dir == NULL) {
1898 		err = got_error_from_errno2("opendir", path_dir);
1899 		goto done;
1900 	}
1901 
1902 	nentries = 0;
1903 	while ((de = readdir(dir)) != NULL) {
1904 		int ignore = 0;
1905 		int type;
1906 
1907 		if (strcmp(de->d_name, ".") == 0 ||
1908 		    strcmp(de->d_name, "..") == 0)
1909 			continue;
1910 
1911 		TAILQ_FOREACH(pe, ignores, entry) {
1912 			if (fnmatch(pe->path, de->d_name, 0) == 0) {
1913 				ignore = 1;
1914 				break;
1915 			}
1916 		}
1917 		if (ignore)
1918 			continue;
1919 
1920 		err = got_path_dirent_type(&type, path_dir, de);
1921 		if (err)
1922 			goto done;
1923 
1924 		if (type == DT_DIR) {
1925 			err = import_subdir(&new_te, de, path_dir,
1926 			    ignores, repo, progress_cb, progress_arg);
1927 			if (err) {
1928 				if (err->code != GOT_ERR_NO_TREE_ENTRY)
1929 					goto done;
1930 				err = NULL;
1931 				continue;
1932 			}
1933 		} else if (type == DT_REG || type == DT_LNK) {
1934 			err = import_file(&new_te, de, path_dir, repo);
1935 			if (err)
1936 				goto done;
1937 		} else
1938 			continue;
1939 
1940 		err = insert_tree_entry(new_te, &paths);
1941 		if (err)
1942 			goto done;
1943 		nentries++;
1944 	}
1945 
1946 	if (TAILQ_EMPTY(&paths)) {
1947 		err = got_error_msg(GOT_ERR_NO_TREE_ENTRY,
1948 		    "cannot create tree without any entries");
1949 		goto done;
1950 	}
1951 
1952 	TAILQ_FOREACH(pe, &paths, entry) {
1953 		struct got_tree_entry *te = pe->data;
1954 		char *path;
1955 		if (!S_ISREG(te->mode) && !S_ISLNK(te->mode))
1956 			continue;
1957 		if (asprintf(&path, "%s/%s", path_dir, pe->path) == -1) {
1958 			err = got_error_from_errno("asprintf");
1959 			goto done;
1960 		}
1961 		err = (*progress_cb)(progress_arg, path);
1962 		free(path);
1963 		if (err)
1964 			goto done;
1965 	}
1966 
1967 	err = got_object_tree_create(new_tree_id, &paths, nentries, repo);
1968 done:
1969 	if (dir)
1970 		closedir(dir);
1971 	got_pathlist_free(&paths);
1972 	return err;
1973 }
1974 
1975 const struct got_error *
1976 got_repo_import(struct got_object_id **new_commit_id, const char *path_dir,
1977     const char *logmsg, const char *author, struct got_pathlist_head *ignores,
1978     struct got_repository *repo, got_repo_import_cb progress_cb,
1979     void *progress_arg)
1980 {
1981 	const struct got_error *err;
1982 	struct got_object_id *new_tree_id;
1983 
1984 	err = write_tree(&new_tree_id, path_dir, ignores, repo,
1985 	    progress_cb, progress_arg);
1986 	if (err)
1987 		return err;
1988 
1989 	err = got_object_commit_create(new_commit_id, new_tree_id, NULL, 0,
1990 	    author, time(NULL), author, time(NULL), logmsg, repo);
1991 	free(new_tree_id);
1992 	return err;
1993 }
1994 
1995 const struct got_error *
1996 got_repo_get_loose_object_info(int *nobjects, off_t *ondisk_size,
1997     struct got_repository *repo)
1998 {
1999 	const struct got_error *err = NULL;
2000 	char *path_objects = NULL, *path = NULL;
2001 	DIR *dir = NULL;
2002 	struct got_object_id id;
2003 	int i;
2004 
2005 	*nobjects = 0;
2006 	*ondisk_size = 0;
2007 
2008 	path_objects = got_repo_get_path_objects(repo);
2009 	if (path_objects == NULL)
2010 		return got_error_from_errno("got_repo_get_path_objects");
2011 
2012 	for (i = 0; i <= 0xff; i++) {
2013 		struct dirent *dent;
2014 
2015 		if (asprintf(&path, "%s/%.2x", path_objects, i) == -1) {
2016 			err = got_error_from_errno("asprintf");
2017 			break;
2018 		}
2019 
2020 		dir = opendir(path);
2021 		if (dir == NULL) {
2022 			if (errno == ENOENT) {
2023 				err = NULL;
2024 				continue;
2025 			}
2026 			err = got_error_from_errno2("opendir", path);
2027 			break;
2028 		}
2029 
2030 		while ((dent = readdir(dir)) != NULL) {
2031 			char *id_str;
2032 			int fd;
2033 			struct stat sb;
2034 
2035 			if (strcmp(dent->d_name, ".") == 0 ||
2036 			    strcmp(dent->d_name, "..") == 0)
2037 				continue;
2038 
2039 			if (asprintf(&id_str, "%.2x%s", i, dent->d_name) == -1) {
2040 				err = got_error_from_errno("asprintf");
2041 				goto done;
2042 			}
2043 
2044 			if (!got_parse_sha1_digest(id.sha1, id_str)) {
2045 				free(id_str);
2046 				continue;
2047 			}
2048 			free(id_str);
2049 
2050 			err = got_object_open_loose_fd(&fd, &id, repo);
2051 			if (err)
2052 				goto done;
2053 
2054 			if (fstat(fd, &sb) == -1) {
2055 				err = got_error_from_errno("fstat");
2056 				close(fd);
2057 				goto done;
2058 			}
2059 			(*nobjects)++;
2060 			(*ondisk_size) += sb.st_size;
2061 
2062 			if (close(fd) == -1) {
2063 				err = got_error_from_errno("close");
2064 				goto done;
2065 			}
2066 		}
2067 
2068 		if (closedir(dir) != 0) {
2069 			err = got_error_from_errno("closedir");
2070 			goto done;
2071 		}
2072 		dir = NULL;
2073 
2074 		free(path);
2075 		path = NULL;
2076 	}
2077 done:
2078 	if (dir && closedir(dir) != 0 && err == NULL)
2079 		err = got_error_from_errno("closedir");
2080 
2081 	if (err) {
2082 		*nobjects = 0;
2083 		*ondisk_size = 0;
2084 	}
2085 	free(path_objects);
2086 	free(path);
2087 	return err;
2088 }
2089 
2090 const struct got_error *
2091 got_repo_get_packfile_info(int *npackfiles, int *nobjects,
2092     off_t *total_packsize, struct got_repository *repo)
2093 {
2094 	const struct got_error *err = NULL;
2095 	DIR *packdir = NULL;
2096 	struct dirent *dent;
2097 	struct got_packidx *packidx = NULL;
2098 	char *path_packidx;
2099 	char *path_packfile;
2100 	int packdir_fd;
2101 	struct stat sb;
2102 
2103 	*npackfiles = 0;
2104 	*nobjects = 0;
2105 	*total_packsize = 0;
2106 
2107 	packdir_fd = openat(got_repo_get_fd(repo),
2108 	    GOT_OBJECTS_PACK_DIR, O_DIRECTORY);
2109 	if (packdir_fd == -1) {
2110 		return got_error_from_errno_fmt("openat: %s/%s",
2111 		    got_repo_get_path_git_dir(repo),
2112 		    GOT_OBJECTS_PACK_DIR);
2113 	}
2114 
2115 	packdir = fdopendir(packdir_fd);
2116 	if (packdir == NULL) {
2117 		err = got_error_from_errno("fdopendir");
2118 		goto done;
2119 	}
2120 
2121 	while ((dent = readdir(packdir)) != NULL) {
2122 		if (!got_repo_is_packidx_filename(dent->d_name,
2123 		    strlen(dent->d_name)))
2124 			continue;
2125 
2126 		if (asprintf(&path_packidx, "%s/%s", GOT_OBJECTS_PACK_DIR,
2127 		    dent->d_name) == -1) {
2128 			err = got_error_from_errno("asprintf");
2129 			goto done;
2130 		}
2131 
2132 		err = got_packidx_open(&packidx, got_repo_get_fd(repo),
2133 		    path_packidx, 0);
2134 		free(path_packidx);
2135 		if (err)
2136 			goto done;
2137 
2138 		if (fstat(packidx->fd, &sb) == -1)
2139 			goto done;
2140 		*total_packsize += sb.st_size;
2141 
2142 		err = got_packidx_get_packfile_path(&path_packfile,
2143 		    packidx->path_packidx);
2144 		if (err)
2145 			goto done;
2146 
2147 		if (fstatat(got_repo_get_fd(repo), path_packfile, &sb,
2148 		    0) == -1) {
2149 			free(path_packfile);
2150 			goto done;
2151 		}
2152 		free(path_packfile);
2153 		*total_packsize += sb.st_size;
2154 
2155 		*nobjects += be32toh(packidx->hdr.fanout_table[0xff]);
2156 
2157 		(*npackfiles)++;
2158 
2159 		got_packidx_close(packidx);
2160 		packidx = NULL;
2161 	}
2162 done:
2163 	if (packidx)
2164 		got_packidx_close(packidx);
2165 	if (packdir && closedir(packdir) != 0 && err == NULL)
2166 		err = got_error_from_errno("closedir");
2167 	if (err) {
2168 		*npackfiles = 0;
2169 		*nobjects = 0;
2170 		*total_packsize = 0;
2171 	}
2172 	return err;
2173 }
2174 
2175 RB_GENERATE(got_packidx_bloom_filter_tree, got_packidx_bloom_filter, entry,
2176     got_packidx_bloom_filter_cmp);