2 * Copyright (c) 2018, 2019 Stefan Sperling <stsp@openbsd.org>
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.
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.
17 #include <sys/types.h>
19 #include <sys/queue.h>
21 #include <sys/socket.h>
23 #include <sys/resource.h>
40 #include "got_error.h"
41 #include "got_object.h"
42 #include "got_repository.h"
43 #include "got_opentemp.h"
46 #include "got_lib_sha1.h"
47 #include "got_lib_delta.h"
48 #include "got_lib_inflate.h"
49 #include "got_lib_object.h"
50 #include "got_lib_privsep.h"
51 #include "got_lib_object_idcache.h"
52 #include "got_lib_object_cache.h"
53 #include "got_lib_object_parse.h"
54 #include "got_lib_pack.h"
55 #include "got_lib_repository.h"
58 #define MIN(_a,_b) ((_a) < (_b) ? (_a) : (_b))
61 struct got_object_id *
62 got_object_get_id(struct got_object *obj)
67 const struct got_error *
68 got_object_get_id_str(char **outbuf, struct got_object *obj)
70 return got_object_id_str(outbuf, &obj->id);
73 const struct got_error *
74 got_object_get_type(int *type, struct got_repository *repo,
75 struct got_object_id *id)
77 const struct got_error *err = NULL;
78 struct got_object *obj;
80 err = got_object_open(&obj, repo, id);
85 case GOT_OBJ_TYPE_COMMIT:
86 case GOT_OBJ_TYPE_TREE:
87 case GOT_OBJ_TYPE_BLOB:
88 case GOT_OBJ_TYPE_TAG:
92 err = got_error(GOT_ERR_OBJ_TYPE);
96 got_object_close(obj);
100 const struct got_error *
101 got_object_get_path(char **path, struct got_object_id *id,
102 struct got_repository *repo)
104 const struct got_error *err = NULL;
110 path_objects = got_repo_get_path_objects(repo);
111 if (path_objects == NULL)
112 return got_error_from_errno("got_repo_get_path_objects");
114 err = got_object_id_str(&hex, id);
118 if (asprintf(path, "%s/%.2x/%s", path_objects,
119 id->sha1[0], hex + 2) == -1)
120 err = got_error_from_errno("asprintf");
128 const struct got_error *
129 got_object_open_loose_fd(int *fd, struct got_object_id *id,
130 struct got_repository *repo)
132 const struct got_error *err = NULL;
135 err = got_object_get_path(&path, id, repo);
138 *fd = open(path, O_RDONLY | O_NOFOLLOW);
140 err = got_error_from_errno2("open", path);
148 static const struct got_error *
149 request_packed_object(struct got_object **obj, struct got_pack *pack, int idx,
150 struct got_object_id *id)
152 const struct got_error *err = NULL;
153 struct imsgbuf *ibuf = pack->privsep_child->ibuf;
155 err = got_privsep_send_packed_obj_req(ibuf, idx, id);
159 err = got_privsep_recv_obj(obj, ibuf);
163 memcpy(&(*obj)->id, id, sizeof((*obj)->id));
168 static const struct got_error *
169 request_packed_object_raw(uint8_t **outbuf, off_t *size, size_t *hdrlen,
170 int outfd, struct got_pack *pack, int idx, struct got_object_id *id)
172 const struct got_error *err = NULL;
173 struct imsgbuf *ibuf = pack->privsep_child->ibuf;
175 int basefd, accumfd; /* temporary files for delta application */
177 basefd = got_opentempfd();
179 return got_error_from_errno("got_opentempfd");
181 accumfd = got_opentempfd();
184 return got_error_from_errno("got_opentempfd");
187 outfd_child = dup(outfd);
188 if (outfd_child == -1) {
189 err = got_error_from_errno("dup");
195 err = got_privsep_send_packed_raw_obj_req(ibuf, idx, id);
203 err = got_privsep_send_raw_obj_outfd(ibuf, outfd_child);
211 err = got_privsep_send_tmpfd(pack->privsep_child->ibuf,
218 err = got_privsep_send_tmpfd(pack->privsep_child->ibuf,
223 err = got_privsep_recv_raw_obj(outbuf, size, hdrlen, ibuf);
231 set_max_datasize(void)
235 if (getrlimit(RLIMIT_DATA, &rl) != 0)
238 rl.rlim_cur = rl.rlim_max;
239 setrlimit(RLIMIT_DATA, &rl);
242 static const struct got_error *
243 start_pack_privsep_child(struct got_pack *pack, struct got_packidx *packidx)
245 const struct got_error *err = NULL;
248 struct imsgbuf *ibuf;
250 ibuf = calloc(1, sizeof(*ibuf));
252 return got_error_from_errno("calloc");
254 pack->privsep_child = calloc(1, sizeof(*pack->privsep_child));
255 if (pack->privsep_child == NULL) {
256 err = got_error_from_errno("calloc");
261 if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, imsg_fds) == -1) {
262 err = got_error_from_errno("socketpair");
268 err = got_error_from_errno("fork");
270 } else if (pid == 0) {
272 got_privsep_exec_child(imsg_fds, GOT_PATH_PROG_READ_PACK,
273 pack->path_packfile);
277 if (close(imsg_fds[1]) == -1)
278 return got_error_from_errno("close");
279 pack->privsep_child->imsg_fd = imsg_fds[0];
280 pack->privsep_child->pid = pid;
281 imsg_init(ibuf, imsg_fds[0]);
282 pack->privsep_child->ibuf = ibuf;
284 err = got_privsep_init_pack_child(ibuf, pack, packidx);
286 const struct got_error *child_err;
287 err = got_privsep_send_stop(pack->privsep_child->imsg_fd);
288 child_err = got_privsep_wait_for_child(
289 pack->privsep_child->pid);
290 if (child_err && err == NULL)
296 free(pack->privsep_child);
297 pack->privsep_child = NULL;
302 static const struct got_error *
303 read_packed_object_privsep(struct got_object **obj,
304 struct got_repository *repo, struct got_pack *pack,
305 struct got_packidx *packidx, int idx, struct got_object_id *id)
307 const struct got_error *err = NULL;
309 if (pack->privsep_child == NULL) {
310 err = start_pack_privsep_child(pack, packidx);
315 return request_packed_object(obj, pack, idx, id);
318 static const struct got_error *
319 read_packed_object_raw_privsep(uint8_t **outbuf, off_t *size, size_t *hdrlen,
320 int outfd, struct got_pack *pack, struct got_packidx *packidx, int idx,
321 struct got_object_id *id)
323 const struct got_error *err = NULL;
325 if (pack->privsep_child == NULL) {
326 err = start_pack_privsep_child(pack, packidx);
331 return request_packed_object_raw(outbuf, size, hdrlen, outfd, pack,
335 static const struct got_error *
336 open_packed_object(struct got_object **obj, struct got_object_id *id,
337 struct got_repository *repo)
339 const struct got_error *err = NULL;
340 struct got_pack *pack = NULL;
341 struct got_packidx *packidx = NULL;
345 err = got_repo_search_packidx(&packidx, &idx, repo, id);
349 err = got_packidx_get_packfile_path(&path_packfile, packidx);
353 pack = got_repo_get_cached_pack(repo, path_packfile);
355 err = got_repo_cache_pack(&pack, repo, path_packfile, packidx);
360 err = read_packed_object_privsep(obj, repo, pack, packidx, idx, id);
368 static const struct got_error *
369 request_object(struct got_object **obj, struct got_repository *repo, int fd)
371 const struct got_error *err = NULL;
372 struct imsgbuf *ibuf;
374 ibuf = repo->privsep_children[GOT_REPO_PRIVSEP_CHILD_OBJECT].ibuf;
376 err = got_privsep_send_obj_req(ibuf, fd);
380 return got_privsep_recv_obj(obj, ibuf);
383 static const struct got_error *
384 request_raw_object(uint8_t **outbuf, off_t *size, size_t *hdrlen, int outfd,
385 struct got_repository *repo, int infd)
387 const struct got_error *err = NULL;
388 struct imsgbuf *ibuf;
391 ibuf = repo->privsep_children[GOT_REPO_PRIVSEP_CHILD_OBJECT].ibuf;
393 outfd_child = dup(outfd);
394 if (outfd_child == -1)
395 return got_error_from_errno("dup");
397 err = got_privsep_send_raw_obj_req(ibuf, infd);
401 err = got_privsep_send_raw_obj_outfd(ibuf, outfd_child);
405 return got_privsep_recv_raw_obj(outbuf, size, hdrlen, ibuf);
408 static const struct got_error *
409 start_read_object_child(struct got_repository *repo)
411 const struct got_error *err = NULL;
414 struct imsgbuf *ibuf;
416 ibuf = calloc(1, sizeof(*ibuf));
418 return got_error_from_errno("calloc");
420 if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, imsg_fds) == -1) {
421 err = got_error_from_errno("socketpair");
428 err = got_error_from_errno("fork");
433 got_privsep_exec_child(imsg_fds, GOT_PATH_PROG_READ_OBJECT,
438 if (close(imsg_fds[1]) == -1) {
439 err = got_error_from_errno("close");
444 repo->privsep_children[GOT_REPO_PRIVSEP_CHILD_OBJECT].imsg_fd =
446 repo->privsep_children[GOT_REPO_PRIVSEP_CHILD_OBJECT].pid = pid;
447 imsg_init(ibuf, imsg_fds[0]);
448 repo->privsep_children[GOT_REPO_PRIVSEP_CHILD_OBJECT].ibuf = ibuf;
453 static const struct got_error *
454 read_object_header_privsep(struct got_object **obj, struct got_repository *repo,
457 const struct got_error *err;
459 if (repo->privsep_children[GOT_REPO_PRIVSEP_CHILD_OBJECT].imsg_fd != -1)
460 return request_object(obj, repo, obj_fd);
462 err = start_read_object_child(repo);
468 return request_object(obj, repo, obj_fd);
471 static const struct got_error *
472 read_object_raw_privsep(uint8_t **outbuf, off_t *size, size_t *hdrlen,
473 int outfd, struct got_repository *repo, int obj_fd)
475 const struct got_error *err;
477 if (repo->privsep_children[GOT_REPO_PRIVSEP_CHILD_OBJECT].imsg_fd != -1)
478 return request_raw_object(outbuf, size, hdrlen, outfd, repo,
481 err = start_read_object_child(repo);
485 return request_raw_object(outbuf, size, hdrlen, outfd, repo, obj_fd);
488 const struct got_error *
489 got_object_open(struct got_object **obj, struct got_repository *repo,
490 struct got_object_id *id)
492 const struct got_error *err = NULL;
495 *obj = got_repo_get_cached_object(repo, id);
501 err = open_packed_object(obj, id, repo);
502 if (err && err->code != GOT_ERR_NO_OBJ)
506 return got_repo_cache_object(repo, id, *obj);
509 err = got_object_open_loose_fd(&fd, id, repo);
511 if (err->code == GOT_ERR_ERRNO && errno == ENOENT)
512 err = got_error_no_obj(id);
516 err = read_object_header_privsep(obj, repo, fd);
520 memcpy((*obj)->id.sha1, id->sha1, SHA1_DIGEST_LENGTH);
523 return got_repo_cache_object(repo, id, *obj);
526 const struct got_error *
527 got_object_raw_open(struct got_raw_object **obj, struct got_repository *repo,
528 struct got_object_id *id, size_t blocksize)
530 const struct got_error *err = NULL;
531 struct got_packidx *packidx = NULL;
533 uint8_t *outbuf = NULL;
537 char *path_packfile = NULL;
541 outfd = got_opentempfd();
543 return got_error_from_errno("got_opentempfd");
545 err = got_repo_search_packidx(&packidx, &idx, repo, id);
547 struct got_pack *pack = NULL;
549 err = got_packidx_get_packfile_path(&path_packfile, packidx);
553 pack = got_repo_get_cached_pack(repo, path_packfile);
555 err = got_repo_cache_pack(&pack, repo, path_packfile,
560 err = read_packed_object_raw_privsep(&outbuf, &size, &hdrlen,
561 outfd, pack, packidx, idx, id);
562 } else if (err->code == GOT_ERR_NO_OBJ) {
565 err = got_object_open_loose_fd(&fd, id, repo);
568 err = read_object_raw_privsep(&outbuf, &size, &hdrlen, outfd,
573 err = got_error(GOT_ERR_BAD_OBJ_HDR);
577 *obj = calloc(1, sizeof(**obj));
579 err = got_error_from_errno("calloc");
583 (*obj)->read_buf = malloc(blocksize);
584 if ((*obj)->read_buf == NULL) {
585 err = got_error_from_errno("malloc");
590 if (close(outfd) == -1) {
591 err = got_error_from_errno("close");
595 (*obj)->f = fmemopen(outbuf, hdrlen + size, "r");
596 if ((*obj)->f == NULL) {
597 err = got_error_from_errno("fdopen");
600 (*obj)->data = outbuf;
603 if (fstat(outfd, &sb) == -1) {
604 err = got_error_from_errno("fstat");
608 if (sb.st_size != size) {
609 err = got_error(GOT_ERR_PRIVSEP_LEN);
613 (*obj)->f = fdopen(outfd, "r");
614 if ((*obj)->f == NULL) {
615 err = got_error_from_errno("fdopen");
621 (*obj)->hdrlen = hdrlen;
623 (*obj)->blocksize = blocksize;
628 got_object_raw_close(*obj);
639 got_object_raw_rewind(struct got_raw_object *obj)
646 got_object_raw_get_hdrlen(struct got_raw_object *obj)
652 got_object_raw_get_read_buf(struct got_raw_object *obj)
654 return obj->read_buf;
657 const struct got_error *
658 got_object_raw_read_block(size_t *outlenp, struct got_raw_object *obj)
662 n = fread(obj->read_buf, 1, obj->blocksize, obj->f);
663 if (n == 0 && ferror(obj->f))
664 return got_ferror(obj->f, GOT_ERR_IO);
669 const struct got_error *
670 got_object_raw_close(struct got_raw_object *obj)
672 const struct got_error *err = NULL;
675 if (obj->f != NULL && fclose(obj->f) == EOF && err == NULL)
676 err = got_error_from_errno("fclose");
682 const struct got_error *
683 got_object_open_by_id_str(struct got_object **obj, struct got_repository *repo,
686 struct got_object_id id;
688 if (!got_parse_sha1_digest(id.sha1, id_str))
689 return got_error_path(id_str, GOT_ERR_BAD_OBJ_ID_STR);
691 return got_object_open(obj, repo, &id);
694 const struct got_error *
695 got_object_resolve_id_str(struct got_object_id **id,
696 struct got_repository *repo, const char *id_str)
698 const struct got_error *err = NULL;
699 struct got_object *obj;
701 err = got_object_open_by_id_str(&obj, repo, id_str);
705 *id = got_object_id_dup(got_object_get_id(obj));
706 got_object_close(obj);
708 return got_error_from_errno("got_object_id_dup");
713 static const struct got_error *
714 request_packed_commit(struct got_commit_object **commit, struct got_pack *pack,
715 int pack_idx, struct got_object_id *id)
717 const struct got_error *err = NULL;
719 err = got_privsep_send_commit_req(pack->privsep_child->ibuf, -1, id,
724 err = got_privsep_recv_commit(commit, pack->privsep_child->ibuf);
728 (*commit)->flags |= GOT_COMMIT_FLAG_PACKED;
732 static const struct got_error *
733 read_packed_commit_privsep(struct got_commit_object **commit,
734 struct got_pack *pack, struct got_packidx *packidx, int idx,
735 struct got_object_id *id)
737 const struct got_error *err = NULL;
739 if (pack->privsep_child)
740 return request_packed_commit(commit, pack, idx, id);
742 err = start_pack_privsep_child(pack, packidx);
746 return request_packed_commit(commit, pack, idx, id);
749 static const struct got_error *
750 request_commit(struct got_commit_object **commit, struct got_repository *repo,
753 const struct got_error *err = NULL;
754 struct imsgbuf *ibuf;
756 ibuf = repo->privsep_children[GOT_REPO_PRIVSEP_CHILD_COMMIT].ibuf;
758 err = got_privsep_send_commit_req(ibuf, fd, NULL, -1);
762 return got_privsep_recv_commit(commit, ibuf);
765 static const struct got_error *
766 read_commit_privsep(struct got_commit_object **commit, int obj_fd,
767 struct got_repository *repo)
769 const struct got_error *err;
772 struct imsgbuf *ibuf;
774 if (repo->privsep_children[GOT_REPO_PRIVSEP_CHILD_COMMIT].imsg_fd != -1)
775 return request_commit(commit, repo, obj_fd);
777 ibuf = calloc(1, sizeof(*ibuf));
779 return got_error_from_errno("calloc");
781 if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, imsg_fds) == -1) {
782 err = got_error_from_errno("socketpair");
789 err = got_error_from_errno("fork");
794 got_privsep_exec_child(imsg_fds, GOT_PATH_PROG_READ_COMMIT,
799 if (close(imsg_fds[1]) == -1) {
800 err = got_error_from_errno("close");
804 repo->privsep_children[GOT_REPO_PRIVSEP_CHILD_COMMIT].imsg_fd =
806 repo->privsep_children[GOT_REPO_PRIVSEP_CHILD_COMMIT].pid = pid;
807 imsg_init(ibuf, imsg_fds[0]);
808 repo->privsep_children[GOT_REPO_PRIVSEP_CHILD_COMMIT].ibuf = ibuf;
810 return request_commit(commit, repo, obj_fd);
814 static const struct got_error *
815 open_commit(struct got_commit_object **commit,
816 struct got_repository *repo, struct got_object_id *id, int check_cache)
818 const struct got_error *err = NULL;
819 struct got_packidx *packidx = NULL;
821 char *path_packfile = NULL;
824 *commit = got_repo_get_cached_commit(repo, id);
825 if (*commit != NULL) {
832 err = got_repo_search_packidx(&packidx, &idx, repo, id);
834 struct got_pack *pack = NULL;
836 err = got_packidx_get_packfile_path(&path_packfile, packidx);
840 pack = got_repo_get_cached_pack(repo, path_packfile);
842 err = got_repo_cache_pack(&pack, repo, path_packfile,
847 err = read_packed_commit_privsep(commit, pack,
849 } else if (err->code == GOT_ERR_NO_OBJ) {
852 err = got_object_open_loose_fd(&fd, id, repo);
855 err = read_commit_privsep(commit, fd, repo);
860 err = got_repo_cache_commit(repo, id, *commit);
867 const struct got_error *
868 got_object_open_as_commit(struct got_commit_object **commit,
869 struct got_repository *repo, struct got_object_id *id)
871 *commit = got_repo_get_cached_commit(repo, id);
872 if (*commit != NULL) {
877 return open_commit(commit, repo, id, 0);
880 const struct got_error *
881 got_object_commit_open(struct got_commit_object **commit,
882 struct got_repository *repo, struct got_object *obj)
884 return open_commit(commit, repo, got_object_get_id(obj), 1);
887 const struct got_error *
888 got_object_qid_alloc(struct got_object_qid **qid, struct got_object_id *id)
890 const struct got_error *err = NULL;
892 *qid = calloc(1, sizeof(**qid));
894 return got_error_from_errno("calloc");
896 (*qid)->id = got_object_id_dup(id);
897 if ((*qid)->id == NULL) {
898 err = got_error_from_errno("got_object_id_dup");
899 got_object_qid_free(*qid);
907 static const struct got_error *
908 request_packed_tree(struct got_tree_object **tree, struct got_pack *pack,
909 int pack_idx, struct got_object_id *id)
911 const struct got_error *err = NULL;
913 err = got_privsep_send_tree_req(pack->privsep_child->ibuf, -1, id,
918 return got_privsep_recv_tree(tree, pack->privsep_child->ibuf);
921 static const struct got_error *
922 read_packed_tree_privsep(struct got_tree_object **tree,
923 struct got_pack *pack, struct got_packidx *packidx, int idx,
924 struct got_object_id *id)
926 const struct got_error *err = NULL;
928 if (pack->privsep_child)
929 return request_packed_tree(tree, pack, idx, id);
931 err = start_pack_privsep_child(pack, packidx);
935 return request_packed_tree(tree, pack, idx, id);
938 static const struct got_error *
939 request_tree(struct got_tree_object **tree, struct got_repository *repo,
942 const struct got_error *err = NULL;
943 struct imsgbuf *ibuf;
945 ibuf = repo->privsep_children[GOT_REPO_PRIVSEP_CHILD_TREE].ibuf;
947 err = got_privsep_send_tree_req(ibuf, fd, NULL, -1);
951 return got_privsep_recv_tree(tree, ibuf);
954 const struct got_error *
955 read_tree_privsep(struct got_tree_object **tree, int obj_fd,
956 struct got_repository *repo)
958 const struct got_error *err;
961 struct imsgbuf *ibuf;
963 if (repo->privsep_children[GOT_REPO_PRIVSEP_CHILD_TREE].imsg_fd != -1)
964 return request_tree(tree, repo, obj_fd);
966 ibuf = calloc(1, sizeof(*ibuf));
968 return got_error_from_errno("calloc");
970 if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, imsg_fds) == -1) {
971 err = got_error_from_errno("socketpair");
978 err = got_error_from_errno("fork");
983 got_privsep_exec_child(imsg_fds, GOT_PATH_PROG_READ_TREE,
988 if (close(imsg_fds[1]) == -1) {
989 err = got_error_from_errno("close");
993 repo->privsep_children[GOT_REPO_PRIVSEP_CHILD_TREE].imsg_fd =
995 repo->privsep_children[GOT_REPO_PRIVSEP_CHILD_TREE].pid = pid;
996 imsg_init(ibuf, imsg_fds[0]);
997 repo->privsep_children[GOT_REPO_PRIVSEP_CHILD_TREE].ibuf = ibuf;
1000 return request_tree(tree, repo, obj_fd);
1003 static const struct got_error *
1004 open_tree(struct got_tree_object **tree, struct got_repository *repo,
1005 struct got_object_id *id, int check_cache)
1007 const struct got_error *err = NULL;
1008 struct got_packidx *packidx = NULL;
1010 char *path_packfile = NULL;
1013 *tree = got_repo_get_cached_tree(repo, id);
1014 if (*tree != NULL) {
1021 err = got_repo_search_packidx(&packidx, &idx, repo, id);
1023 struct got_pack *pack = NULL;
1025 err = got_packidx_get_packfile_path(&path_packfile, packidx);
1029 pack = got_repo_get_cached_pack(repo, path_packfile);
1031 err = got_repo_cache_pack(&pack, repo, path_packfile,
1036 err = read_packed_tree_privsep(tree, pack,
1038 } else if (err->code == GOT_ERR_NO_OBJ) {
1041 err = got_object_open_loose_fd(&fd, id, repo);
1044 err = read_tree_privsep(tree, fd, repo);
1049 err = got_repo_cache_tree(repo, id, *tree);
1052 free(path_packfile);
1056 const struct got_error *
1057 got_object_open_as_tree(struct got_tree_object **tree,
1058 struct got_repository *repo, struct got_object_id *id)
1060 *tree = got_repo_get_cached_tree(repo, id);
1061 if (*tree != NULL) {
1066 return open_tree(tree, repo, id, 0);
1069 const struct got_error *
1070 got_object_tree_open(struct got_tree_object **tree,
1071 struct got_repository *repo, struct got_object *obj)
1073 return open_tree(tree, repo, got_object_get_id(obj), 1);
1077 got_object_tree_get_nentries(struct got_tree_object *tree)
1079 return tree->nentries;
1082 struct got_tree_entry *
1083 got_object_tree_get_first_entry(struct got_tree_object *tree)
1085 return got_object_tree_get_entry(tree, 0);
1088 struct got_tree_entry *
1089 got_object_tree_get_last_entry(struct got_tree_object *tree)
1091 return got_object_tree_get_entry(tree, tree->nentries - 1);
1094 struct got_tree_entry *
1095 got_object_tree_get_entry(struct got_tree_object *tree, int i)
1097 if (i < 0 || i >= tree->nentries)
1099 return &tree->entries[i];
1103 got_tree_entry_get_mode(struct got_tree_entry *te)
1109 got_tree_entry_get_name(struct got_tree_entry *te)
1111 return &te->name[0];
1114 struct got_object_id *
1115 got_tree_entry_get_id(struct got_tree_entry *te)
1120 const struct got_error *
1121 got_object_blob_read_to_str(char **s, struct got_blob_object *blob)
1123 const struct got_error *err = NULL;
1124 size_t len, totlen, hdrlen, offset;
1128 hdrlen = got_object_blob_get_hdrlen(blob);
1134 err = got_object_blob_read_block(&len, blob);
1141 totlen += len - hdrlen;
1142 p = realloc(*s, totlen + 1);
1144 err = got_error_from_errno("realloc");
1150 /* Skip blob object header first time around. */
1152 got_object_blob_get_read_buf(blob) + hdrlen, len - hdrlen);
1157 (*s)[totlen] = '\0';
1161 const struct got_error *
1162 got_tree_entry_get_symlink_target(char **link_target, struct got_tree_entry *te,
1163 struct got_repository *repo)
1165 const struct got_error *err = NULL;
1166 struct got_blob_object *blob = NULL;
1168 *link_target = NULL;
1170 if (!got_object_tree_entry_is_symlink(te))
1171 return got_error(GOT_ERR_TREE_ENTRY_TYPE);
1173 err = got_object_open_as_blob(&blob, repo,
1174 got_tree_entry_get_id(te), PATH_MAX);
1178 err = got_object_blob_read_to_str(link_target, blob);
1179 got_object_blob_close(blob);
1182 *link_target = NULL;
1188 got_tree_entry_get_index(struct got_tree_entry *te)
1193 struct got_tree_entry *
1194 got_tree_entry_get_next(struct got_tree_object *tree,
1195 struct got_tree_entry *te)
1197 return got_object_tree_get_entry(tree, te->idx + 1);
1200 struct got_tree_entry *
1201 got_tree_entry_get_prev(struct got_tree_object *tree,
1202 struct got_tree_entry *te)
1204 return got_object_tree_get_entry(tree, te->idx - 1);
1207 static const struct got_error *
1208 request_packed_blob(uint8_t **outbuf, size_t *size, size_t *hdrlen, int outfd,
1209 struct got_pack *pack, struct got_packidx *packidx, int idx,
1210 struct got_object_id *id)
1212 const struct got_error *err = NULL;
1214 int basefd, accumfd; /* temporary files for delta application */
1216 basefd = got_opentempfd();
1218 return got_error_from_errno("got_opentempfd");
1219 accumfd = got_opentempfd();
1221 return got_error_from_errno("got_opentempfd");
1223 outfd_child = dup(outfd);
1224 if (outfd_child == -1)
1225 return got_error_from_errno("dup");
1227 err = got_privsep_send_blob_req(pack->privsep_child->ibuf, -1, id, idx);
1231 err = got_privsep_send_blob_outfd(pack->privsep_child->ibuf,
1239 err = got_privsep_send_tmpfd(pack->privsep_child->ibuf,
1246 err = got_privsep_send_tmpfd(pack->privsep_child->ibuf,
1251 err = got_privsep_recv_blob(outbuf, size, hdrlen,
1252 pack->privsep_child->ibuf);
1256 if (lseek(outfd, SEEK_SET, 0) == -1)
1257 err = got_error_from_errno("lseek");
1262 static const struct got_error *
1263 read_packed_blob_privsep(uint8_t **outbuf, size_t *size, size_t *hdrlen,
1264 int outfd, struct got_pack *pack, struct got_packidx *packidx, int idx,
1265 struct got_object_id *id)
1267 const struct got_error *err = NULL;
1269 if (pack->privsep_child == NULL) {
1270 err = start_pack_privsep_child(pack, packidx);
1275 return request_packed_blob(outbuf, size, hdrlen, outfd, pack, packidx,
1279 static const struct got_error *
1280 request_blob(uint8_t **outbuf, size_t *size, size_t *hdrlen, int outfd,
1281 int infd, struct imsgbuf *ibuf)
1283 const struct got_error *err = NULL;
1286 outfd_child = dup(outfd);
1287 if (outfd_child == -1)
1288 return got_error_from_errno("dup");
1290 err = got_privsep_send_blob_req(ibuf, infd, NULL, -1);
1294 err = got_privsep_send_blob_outfd(ibuf, outfd_child);
1298 err = got_privsep_recv_blob(outbuf, size, hdrlen, ibuf);
1302 if (lseek(outfd, SEEK_SET, 0) == -1)
1303 return got_error_from_errno("lseek");
1308 static const struct got_error *
1309 read_blob_privsep(uint8_t **outbuf, size_t *size, size_t *hdrlen,
1310 int outfd, int infd, struct got_repository *repo)
1312 const struct got_error *err;
1315 struct imsgbuf *ibuf;
1317 if (repo->privsep_children[GOT_REPO_PRIVSEP_CHILD_BLOB].imsg_fd != -1) {
1318 ibuf = repo->privsep_children[GOT_REPO_PRIVSEP_CHILD_BLOB].ibuf;
1319 return request_blob(outbuf, size, hdrlen, outfd, infd, ibuf);
1322 ibuf = calloc(1, sizeof(*ibuf));
1324 return got_error_from_errno("calloc");
1326 if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, imsg_fds) == -1) {
1327 err = got_error_from_errno("socketpair");
1334 err = got_error_from_errno("fork");
1338 else if (pid == 0) {
1339 got_privsep_exec_child(imsg_fds, GOT_PATH_PROG_READ_BLOB,
1344 if (close(imsg_fds[1]) == -1) {
1345 err = got_error_from_errno("close");
1349 repo->privsep_children[GOT_REPO_PRIVSEP_CHILD_BLOB].imsg_fd =
1351 repo->privsep_children[GOT_REPO_PRIVSEP_CHILD_BLOB].pid = pid;
1352 imsg_init(ibuf, imsg_fds[0]);
1353 repo->privsep_children[GOT_REPO_PRIVSEP_CHILD_BLOB].ibuf = ibuf;
1355 return request_blob(outbuf, size, hdrlen, outfd, infd, ibuf);
1358 static const struct got_error *
1359 open_blob(struct got_blob_object **blob, struct got_repository *repo,
1360 struct got_object_id *id, size_t blocksize)
1362 const struct got_error *err = NULL;
1363 struct got_packidx *packidx = NULL;
1365 char *path_packfile = NULL;
1368 size_t size, hdrlen;
1371 *blob = calloc(1, sizeof(**blob));
1373 return got_error_from_errno("calloc");
1375 outfd = got_opentempfd();
1377 return got_error_from_errno("got_opentempfd");
1379 (*blob)->read_buf = malloc(blocksize);
1380 if ((*blob)->read_buf == NULL) {
1381 err = got_error_from_errno("malloc");
1385 err = got_repo_search_packidx(&packidx, &idx, repo, id);
1387 struct got_pack *pack = NULL;
1389 err = got_packidx_get_packfile_path(&path_packfile, packidx);
1393 pack = got_repo_get_cached_pack(repo, path_packfile);
1395 err = got_repo_cache_pack(&pack, repo, path_packfile,
1400 err = read_packed_blob_privsep(&outbuf, &size, &hdrlen, outfd,
1401 pack, packidx, idx, id);
1402 } else if (err->code == GOT_ERR_NO_OBJ) {
1405 err = got_object_open_loose_fd(&infd, id, repo);
1408 err = read_blob_privsep(&outbuf, &size, &hdrlen, outfd, infd,
1414 if (hdrlen > size) {
1415 err = got_error(GOT_ERR_BAD_OBJ_HDR);
1420 if (close(outfd) == -1 && err == NULL)
1421 err = got_error_from_errno("close");
1423 (*blob)->f = fmemopen(outbuf, size, "rb");
1424 if ((*blob)->f == NULL) {
1425 err = got_error_from_errno("fmemopen");
1429 (*blob)->data = outbuf;
1431 if (fstat(outfd, &sb) == -1) {
1432 err = got_error_from_errno("fstat");
1436 if (sb.st_size != size) {
1437 err = got_error(GOT_ERR_PRIVSEP_LEN);
1441 (*blob)->f = fdopen(outfd, "rb");
1442 if ((*blob)->f == NULL) {
1443 err = got_error_from_errno("fdopen");
1450 (*blob)->hdrlen = hdrlen;
1451 (*blob)->blocksize = blocksize;
1452 memcpy(&(*blob)->id.sha1, id->sha1, SHA1_DIGEST_LENGTH);
1455 free(path_packfile);
1458 got_object_blob_close(*blob);
1460 } else if (outfd != -1)
1466 const struct got_error *
1467 got_object_open_as_blob(struct got_blob_object **blob,
1468 struct got_repository *repo, struct got_object_id *id,
1471 return open_blob(blob, repo, id, blocksize);
1474 const struct got_error *
1475 got_object_blob_open(struct got_blob_object **blob,
1476 struct got_repository *repo, struct got_object *obj, size_t blocksize)
1478 return open_blob(blob, repo, got_object_get_id(obj), blocksize);
1481 const struct got_error *
1482 got_object_blob_close(struct got_blob_object *blob)
1484 const struct got_error *err = NULL;
1485 free(blob->read_buf);
1486 if (blob->f && fclose(blob->f) == EOF)
1487 err = got_error_from_errno("fclose");
1494 got_object_blob_rewind(struct got_blob_object *blob)
1501 got_object_blob_id_str(struct got_blob_object *blob, char *buf, size_t size)
1503 return got_sha1_digest_to_str(blob->id.sha1, buf, size);
1507 got_object_blob_get_hdrlen(struct got_blob_object *blob)
1509 return blob->hdrlen;
1513 got_object_blob_get_read_buf(struct got_blob_object *blob)
1515 return blob->read_buf;
1518 const struct got_error *
1519 got_object_blob_read_block(size_t *outlenp, struct got_blob_object *blob)
1523 n = fread(blob->read_buf, 1, blob->blocksize, blob->f);
1524 if (n == 0 && ferror(blob->f))
1525 return got_ferror(blob->f, GOT_ERR_IO);
1530 const struct got_error *
1531 got_object_blob_dump_to_file(off_t *filesize, int *nlines,
1532 off_t **line_offsets, FILE *outfile, struct got_blob_object *blob)
1534 const struct got_error *err = NULL;
1535 size_t n, len, hdrlen;
1538 const int alloc_chunksz = 512;
1540 off_t off = 0, total_len = 0;
1543 *line_offsets = NULL;
1549 hdrlen = got_object_blob_get_hdrlen(blob);
1551 err = got_object_blob_read_block(&len, blob);
1556 buf = got_object_blob_get_read_buf(blob);
1559 if (line_offsets && *line_offsets == NULL) {
1560 /* Have some data but perhaps no '\n'. */
1562 nalloc = alloc_chunksz;
1563 *line_offsets = calloc(nalloc,
1564 sizeof(**line_offsets));
1565 if (*line_offsets == NULL)
1566 return got_error_from_errno("calloc");
1568 /* Skip forward over end of first line. */
1575 /* Scan '\n' offsets in remaining chunk of data. */
1577 if (buf[i] != '\n') {
1582 if (line_offsets && nalloc < *nlines) {
1583 size_t n = *nlines + alloc_chunksz;
1584 off_t *o = recallocarray(*line_offsets,
1585 nalloc, n, sizeof(**line_offsets));
1587 free(*line_offsets);
1588 *line_offsets = NULL;
1589 return got_error_from_errno(
1596 off = total_len + i - hdrlen + 1;
1597 (*line_offsets)[*nlines - 1] = off;
1602 /* Skip blob object header first time around. */
1603 n = fwrite(buf + hdrlen, 1, len - hdrlen, outfile);
1604 if (n != len - hdrlen)
1605 return got_ferror(outfile, GOT_ERR_IO);
1606 total_len += len - hdrlen;
1610 if (fflush(outfile) != 0)
1611 return got_error_from_errno("fflush");
1615 *filesize = total_len;
1620 static const struct got_error *
1621 request_packed_tag(struct got_tag_object **tag, struct got_pack *pack,
1622 int pack_idx, struct got_object_id *id)
1624 const struct got_error *err = NULL;
1626 err = got_privsep_send_tag_req(pack->privsep_child->ibuf, -1, id,
1631 return got_privsep_recv_tag(tag, pack->privsep_child->ibuf);
1634 static const struct got_error *
1635 read_packed_tag_privsep(struct got_tag_object **tag,
1636 struct got_pack *pack, struct got_packidx *packidx, int idx,
1637 struct got_object_id *id)
1639 const struct got_error *err = NULL;
1641 if (pack->privsep_child)
1642 return request_packed_tag(tag, pack, idx, id);
1644 err = start_pack_privsep_child(pack, packidx);
1648 return request_packed_tag(tag, pack, idx, id);
1651 static const struct got_error *
1652 request_tag(struct got_tag_object **tag, struct got_repository *repo,
1655 const struct got_error *err = NULL;
1656 struct imsgbuf *ibuf;
1658 ibuf = repo->privsep_children[GOT_REPO_PRIVSEP_CHILD_TAG].ibuf;
1660 err = got_privsep_send_tag_req(ibuf, fd, NULL, -1);
1664 return got_privsep_recv_tag(tag, ibuf);
1667 static const struct got_error *
1668 read_tag_privsep(struct got_tag_object **tag, int obj_fd,
1669 struct got_repository *repo)
1671 const struct got_error *err;
1674 struct imsgbuf *ibuf;
1676 if (repo->privsep_children[GOT_REPO_PRIVSEP_CHILD_TAG].imsg_fd != -1)
1677 return request_tag(tag, repo, obj_fd);
1679 ibuf = calloc(1, sizeof(*ibuf));
1681 return got_error_from_errno("calloc");
1683 if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, imsg_fds) == -1) {
1684 err = got_error_from_errno("socketpair");
1691 err = got_error_from_errno("fork");
1695 else if (pid == 0) {
1696 got_privsep_exec_child(imsg_fds, GOT_PATH_PROG_READ_TAG,
1701 if (close(imsg_fds[1]) == -1) {
1702 err = got_error_from_errno("close");
1706 repo->privsep_children[GOT_REPO_PRIVSEP_CHILD_TAG].imsg_fd =
1708 repo->privsep_children[GOT_REPO_PRIVSEP_CHILD_TAG].pid = pid;
1709 imsg_init(ibuf, imsg_fds[0]);
1710 repo->privsep_children[GOT_REPO_PRIVSEP_CHILD_TAG].ibuf = ibuf;
1712 return request_tag(tag, repo, obj_fd);
1715 static const struct got_error *
1716 open_tag(struct got_tag_object **tag, struct got_repository *repo,
1717 struct got_object_id *id, int check_cache)
1719 const struct got_error *err = NULL;
1720 struct got_packidx *packidx = NULL;
1722 char *path_packfile = NULL;
1723 struct got_object *obj = NULL;
1724 int obj_type = GOT_OBJ_TYPE_ANY;
1727 *tag = got_repo_get_cached_tag(repo, id);
1735 err = got_repo_search_packidx(&packidx, &idx, repo, id);
1737 struct got_pack *pack = NULL;
1739 err = got_packidx_get_packfile_path(&path_packfile, packidx);
1743 pack = got_repo_get_cached_pack(repo, path_packfile);
1745 err = got_repo_cache_pack(&pack, repo, path_packfile,
1751 /* Beware of "lightweight" tags: Check object type first. */
1752 err = read_packed_object_privsep(&obj, repo, pack, packidx,
1756 obj_type = obj->type;
1757 got_object_close(obj);
1758 if (obj_type != GOT_OBJ_TYPE_TAG) {
1759 err = got_error(GOT_ERR_OBJ_TYPE);
1762 err = read_packed_tag_privsep(tag, pack, packidx, idx, id);
1763 } else if (err->code == GOT_ERR_NO_OBJ) {
1766 err = got_object_open_loose_fd(&fd, id, repo);
1769 err = read_object_header_privsep(&obj, repo, fd);
1772 obj_type = obj->type;
1773 got_object_close(obj);
1774 if (obj_type != GOT_OBJ_TYPE_TAG)
1775 return got_error(GOT_ERR_OBJ_TYPE);
1777 err = got_object_open_loose_fd(&fd, id, repo);
1780 err = read_tag_privsep(tag, fd, repo);
1785 err = got_repo_cache_tag(repo, id, *tag);
1788 free(path_packfile);
1792 const struct got_error *
1793 got_object_open_as_tag(struct got_tag_object **tag,
1794 struct got_repository *repo, struct got_object_id *id)
1796 *tag = got_repo_get_cached_tag(repo, id);
1802 return open_tag(tag, repo, id, 0);
1805 const struct got_error *
1806 got_object_tag_open(struct got_tag_object **tag,
1807 struct got_repository *repo, struct got_object *obj)
1809 return open_tag(tag, repo, got_object_get_id(obj), 1);
1813 got_object_tag_get_name(struct got_tag_object *tag)
1819 got_object_tag_get_object_type(struct got_tag_object *tag)
1821 return tag->obj_type;
1824 struct got_object_id *
1825 got_object_tag_get_object_id(struct got_tag_object *tag)
1831 got_object_tag_get_tagger_time(struct got_tag_object *tag)
1833 return tag->tagger_time;
1837 got_object_tag_get_tagger_gmtoff(struct got_tag_object *tag)
1839 return tag->tagger_gmtoff;
1843 got_object_tag_get_tagger(struct got_tag_object *tag)
1849 got_object_tag_get_message(struct got_tag_object *tag)
1854 static struct got_tree_entry *
1855 find_entry_by_name(struct got_tree_object *tree, const char *name, size_t len)
1859 /* Note that tree entries are sorted in strncmp() order. */
1860 for (i = 0; i < tree->nentries; i++) {
1861 struct got_tree_entry *te = &tree->entries[i];
1862 int cmp = strncmp(te->name, name, len);
1867 if (te->name[len] == '\0')
1873 struct got_tree_entry *
1874 got_object_tree_find_entry(struct got_tree_object *tree, const char *name)
1876 return find_entry_by_name(tree, name, strlen(name));
1879 const struct got_error *
1880 got_object_id_by_path(struct got_object_id **id, struct got_repository *repo,
1881 struct got_object_id *commit_id, const char *path)
1883 const struct got_error *err = NULL;
1884 struct got_commit_object *commit = NULL;
1885 struct got_tree_object *tree = NULL;
1886 struct got_tree_entry *te = NULL;
1887 const char *seg, *s;
1892 err = got_object_open_as_commit(&commit, repo, commit_id);
1896 /* Handle opening of root of commit's tree. */
1897 if (got_path_is_root_dir(path)) {
1898 *id = got_object_id_dup(commit->tree_id);
1900 err = got_error_from_errno("got_object_id_dup");
1904 err = got_object_open_as_tree(&tree, repo, commit->tree_id);
1914 struct got_tree_object *next_tree;
1923 te = find_entry_by_name(tree, seg, seglen);
1925 err = got_error_path(path, GOT_ERR_NO_TREE_ENTRY);
1936 err = got_object_open_as_tree(&next_tree, repo,
1941 got_object_tree_close(tree);
1947 *id = got_object_id_dup(&te->id);
1949 return got_error_from_errno("got_object_id_dup");
1951 err = got_error_path(path, GOT_ERR_NO_TREE_ENTRY);
1954 got_object_commit_close(commit);
1956 got_object_tree_close(tree);
1961 * Normalize file mode bits to avoid false positive tree entry differences
1962 * in case tree entries have unexpected mode bits set.
1965 normalize_mode_for_comparison(mode_t mode)
1968 * For directories, the only relevant bit is the IFDIR bit.
1969 * This allows us to detect paths changing from a directory
1970 * to a file and vice versa.
1973 return mode & S_IFDIR;
1976 * For symlinks, the only relevant bit is the IFLNK bit.
1977 * This allows us to detect paths changing from a symlinks
1978 * to a file or directory and vice versa.
1981 return mode & S_IFLNK;
1983 /* For files, the only change we care about is the executable bit. */
1984 return mode & S_IXUSR;
1987 const struct got_error *
1988 got_object_tree_path_changed(int *changed,
1989 struct got_tree_object *tree01, struct got_tree_object *tree02,
1990 const char *path, struct got_repository *repo)
1992 const struct got_error *err = NULL;
1993 struct got_tree_object *tree1 = NULL, *tree2 = NULL;
1994 struct got_tree_entry *te1 = NULL, *te2 = NULL;
1995 const char *seg, *s;
2000 /* We not do support comparing the root path. */
2001 if (got_path_is_root_dir(path))
2002 return got_error_path(path, GOT_ERR_BAD_PATH);
2012 struct got_tree_object *next_tree1, *next_tree2;
2013 mode_t mode1, mode2;
2022 te1 = find_entry_by_name(tree1, seg, seglen);
2024 err = got_error(GOT_ERR_NO_OBJ);
2029 te2 = find_entry_by_name(tree2, seg, seglen);
2032 mode1 = normalize_mode_for_comparison(te1->mode);
2033 mode2 = normalize_mode_for_comparison(te2->mode);
2034 if (mode1 != mode2) {
2039 if (got_object_id_cmp(&te1->id, &te2->id) == 0) {
2045 if (*s == '\0') { /* final path element */
2054 err = got_object_open_as_tree(&next_tree1, repo,
2059 if (tree1 != tree01)
2060 got_object_tree_close(tree1);
2064 err = got_object_open_as_tree(&next_tree2, repo,
2069 if (tree2 != tree02)
2070 got_object_tree_close(tree2);
2073 if (tree2 != tree02)
2074 got_object_tree_close(tree2);
2080 if (tree1 && tree1 != tree01)
2081 got_object_tree_close(tree1);
2082 if (tree2 && tree2 != tree02)
2083 got_object_tree_close(tree2);
2087 const struct got_error *
2088 got_object_tree_entry_dup(struct got_tree_entry **new_te,
2089 struct got_tree_entry *te)
2091 const struct got_error *err = NULL;
2093 *new_te = calloc(1, sizeof(**new_te));
2094 if (*new_te == NULL)
2095 return got_error_from_errno("calloc");
2097 (*new_te)->mode = te->mode;
2098 memcpy((*new_te)->name, te->name, sizeof((*new_te)->name));
2099 memcpy(&(*new_te)->id, &te->id, sizeof((*new_te)->id));
2104 got_object_tree_entry_is_submodule(struct got_tree_entry *te)
2106 return (te->mode & S_IFMT) == (S_IFDIR | S_IFLNK);
2110 got_object_tree_entry_is_symlink(struct got_tree_entry *te)
2112 /* S_IFDIR check avoids confusing symlinks with submodules. */
2113 return ((te->mode & (S_IFDIR | S_IFLNK)) == S_IFLNK);
2116 static const struct got_error *
2117 resolve_symlink(char **link_target, const char *path,
2118 struct got_object_id *commit_id, struct got_repository *repo)
2120 const struct got_error *err = NULL;
2122 char *name, *parent_path = NULL;
2123 struct got_object_id *tree_obj_id = NULL;
2124 struct got_tree_object *tree = NULL;
2125 struct got_tree_entry *te = NULL;
2127 *link_target = NULL;
2129 if (strlcpy(buf, path, sizeof(buf)) >= sizeof(buf))
2130 return got_error(GOT_ERR_NO_SPACE);
2132 name = basename(buf);
2134 return got_error_from_errno2("basename", path);
2136 err = got_path_dirname(&parent_path, path);
2140 err = got_object_id_by_path(&tree_obj_id, repo, commit_id,
2143 if (err->code == GOT_ERR_NO_TREE_ENTRY) {
2144 /* Display the complete path in error message. */
2145 err = got_error_path(path, err->code);
2150 err = got_object_open_as_tree(&tree, repo, tree_obj_id);
2154 te = got_object_tree_find_entry(tree, name);
2156 err = got_error_path(path, GOT_ERR_NO_TREE_ENTRY);
2160 if (got_object_tree_entry_is_symlink(te)) {
2161 err = got_tree_entry_get_symlink_target(link_target, te, repo);
2164 if (!got_path_is_absolute(*link_target)) {
2166 if (asprintf(&abspath, "%s/%s", parent_path,
2167 *link_target) == -1) {
2168 err = got_error_from_errno("asprintf");
2172 *link_target = malloc(PATH_MAX);
2173 if (*link_target == NULL) {
2174 err = got_error_from_errno("malloc");
2177 err = got_canonpath(abspath, *link_target, PATH_MAX);
2186 got_object_tree_close(tree);
2189 *link_target = NULL;
2194 const struct got_error *
2195 got_object_resolve_symlinks(char **link_target, const char *path,
2196 struct got_object_id *commit_id, struct got_repository *repo)
2198 const struct got_error *err = NULL;
2199 char *next_target = NULL;
2200 int max_recursion = 40; /* matches Git */
2202 *link_target = NULL;
2205 err = resolve_symlink(&next_target,
2206 *link_target ? *link_target : path, commit_id, repo);
2211 if (--max_recursion == 0) {
2212 err = got_error_path(path, GOT_ERR_RECURSION);
2213 *link_target = NULL;
2216 *link_target = next_target;
2218 } while (next_target);
2223 const struct got_error *
2224 got_traverse_packed_commits(struct got_object_id_queue *traversed_commits,
2225 struct got_object_id *commit_id, const char *path,
2226 struct got_repository *repo)
2228 const struct got_error *err = NULL;
2229 struct got_pack *pack = NULL;
2230 struct got_packidx *packidx = NULL;
2231 char *path_packfile = NULL;
2232 struct got_commit_object *changed_commit = NULL;
2233 struct got_object_id *changed_commit_id = NULL;
2236 err = got_repo_search_packidx(&packidx, &idx, repo, commit_id);
2238 if (err->code != GOT_ERR_NO_OBJ)
2243 err = got_packidx_get_packfile_path(&path_packfile, packidx);
2247 pack = got_repo_get_cached_pack(repo, path_packfile);
2249 err = got_repo_cache_pack(&pack, repo, path_packfile, packidx);
2254 if (pack->privsep_child == NULL) {
2255 err = start_pack_privsep_child(pack, packidx);
2260 err = got_privsep_send_commit_traversal_request(
2261 pack->privsep_child->ibuf, commit_id, idx, path);
2265 err = got_privsep_recv_traversed_commits(&changed_commit,
2266 &changed_commit_id, traversed_commits, pack->privsep_child->ibuf);
2270 if (changed_commit) {
2272 * Cache the commit in which the path was changed.
2273 * This commit might be opened again soon.
2275 changed_commit->refcnt++;
2276 err = got_repo_cache_commit(repo, changed_commit_id,
2278 got_object_commit_close(changed_commit);
2281 free(path_packfile);
2282 free(changed_commit_id);