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