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.
29 #include "got_compat.h"
31 #include "got_error.h"
32 #include "got_object.h"
35 #include "got_lib_fileindex.h"
36 #include "got_lib_worktree.h"
38 /* got_fileindex_entry flags */
39 #define GOT_FILEIDX_F_PATH_LEN 0x00000fff
40 #define GOT_FILEIDX_F_STAGE 0x0000f000
41 #define GOT_FILEIDX_F_STAGE_SHIFT 12
42 #define GOT_FILEIDX_F_NOT_FLUSHED 0x00010000
43 #define GOT_FILEIDX_F_NO_BLOB 0x00020000
44 #define GOT_FILEIDX_F_NO_COMMIT 0x00040000
45 #define GOT_FILEIDX_F_NO_FILE_ON_DISK 0x00080000
46 #define GOT_FILEIDX_F_REMOVE_ON_FLUSH 0x00100000
47 #define GOT_FILEIDX_F_SKIPPED 0x00200000
49 struct got_fileindex {
50 struct got_fileindex_tree entries;
51 int nentries; /* Does not include entries marked for removal. */
52 #define GOT_FILEIDX_MAX_ENTRIES INT_MAX
56 got_fileindex_entry_perms_get(struct got_fileindex_entry *ie)
58 return ((ie->mode & GOT_FILEIDX_MODE_PERMS) >>
59 GOT_FILEIDX_MODE_PERMS_SHIFT);
63 fileindex_entry_perms_set(struct got_fileindex_entry *ie, mode_t mode)
65 ie->mode &= ~GOT_FILEIDX_MODE_PERMS;
66 ie->mode |= ((mode << GOT_FILEIDX_MODE_PERMS_SHIFT) &
67 GOT_FILEIDX_MODE_PERMS);
71 got_fileindex_perms_to_st(struct got_fileindex_entry *ie)
73 mode_t perms = got_fileindex_entry_perms_get(ie);
74 int type = got_fileindex_entry_filetype_get(ie);
77 if (type == GOT_FILEIDX_MODE_REGULAR_FILE ||
78 type == GOT_FILEIDX_MODE_BAD_SYMLINK)
83 return (ftype | (perms & (S_IRWXU | S_IRWXG | S_IRWXO)));
86 const struct got_error *
87 got_fileindex_entry_update(struct got_fileindex_entry *ie,
88 int wt_fd, const char *ondisk_path, uint8_t *blob_sha1,
89 uint8_t *commit_sha1, int update_timestamps)
93 if (fstatat(wt_fd, ondisk_path, &sb, AT_SYMLINK_NOFOLLOW) != 0) {
94 if (!((ie->flags & GOT_FILEIDX_F_NO_FILE_ON_DISK) &&
96 return got_error_from_errno2("fstatat", ondisk_path);
97 sb.st_mode = GOT_DEFAULT_FILE_MODE;
99 if (sb.st_mode & S_IFDIR)
100 return got_error_set_errno(EISDIR, ondisk_path);
101 ie->flags &= ~GOT_FILEIDX_F_NO_FILE_ON_DISK;
105 if ((ie->flags & GOT_FILEIDX_F_NO_FILE_ON_DISK) == 0) {
106 if (update_timestamps) {
107 ie->ctime_sec = sb.st_ctim.tv_sec;
108 ie->ctime_nsec = sb.st_ctim.tv_nsec;
109 ie->mtime_sec = sb.st_mtim.tv_sec;
110 ie->mtime_nsec = sb.st_mtim.tv_nsec;
114 ie->size = (sb.st_size & 0xffffffff);
115 if (S_ISLNK(sb.st_mode)) {
116 got_fileindex_entry_filetype_set(ie,
117 GOT_FILEIDX_MODE_SYMLINK);
118 fileindex_entry_perms_set(ie, 0);
120 got_fileindex_entry_filetype_set(ie,
121 GOT_FILEIDX_MODE_REGULAR_FILE);
122 fileindex_entry_perms_set(ie,
123 sb.st_mode & (S_IRWXU | S_IRWXG | S_IRWXO));
128 memcpy(ie->blob_sha1, blob_sha1, SHA1_DIGEST_LENGTH);
129 ie->flags &= ~GOT_FILEIDX_F_NO_BLOB;
131 ie->flags |= GOT_FILEIDX_F_NO_BLOB;
134 memcpy(ie->commit_sha1, commit_sha1, SHA1_DIGEST_LENGTH);
135 ie->flags &= ~GOT_FILEIDX_F_NO_COMMIT;
137 ie->flags |= GOT_FILEIDX_F_NO_COMMIT;
143 got_fileindex_entry_mark_deleted_from_disk(struct got_fileindex_entry *ie)
145 ie->flags |= GOT_FILEIDX_F_NO_FILE_ON_DISK;
149 got_fileindex_entry_mark_skipped(struct got_fileindex_entry *ie)
151 ie->flags |= GOT_FILEIDX_F_SKIPPED;
154 const struct got_error *
155 got_fileindex_entry_alloc(struct got_fileindex_entry **ie,
160 *ie = calloc(1, sizeof(**ie));
162 return got_error_from_errno("calloc");
164 (*ie)->path = strdup(relpath);
165 if ((*ie)->path == NULL) {
166 const struct got_error *err = got_error_from_errno("strdup");
172 len = strlen(relpath);
173 if (len > GOT_FILEIDX_F_PATH_LEN)
174 len = GOT_FILEIDX_F_PATH_LEN;
181 got_fileindex_entry_free(struct got_fileindex_entry *ie)
188 got_fileindex_entry_path_len(const struct got_fileindex_entry *ie)
190 return (size_t)(ie->flags & GOT_FILEIDX_F_PATH_LEN);
194 got_fileindex_entry_stage_get(const struct got_fileindex_entry *ie)
196 return ((ie->flags & GOT_FILEIDX_F_STAGE) >> GOT_FILEIDX_F_STAGE_SHIFT);
200 got_fileindex_entry_stage_set(struct got_fileindex_entry *ie, uint32_t stage)
202 ie->flags &= ~GOT_FILEIDX_F_STAGE;
203 ie->flags |= ((stage << GOT_FILEIDX_F_STAGE_SHIFT) &
204 GOT_FILEIDX_F_STAGE);
208 got_fileindex_entry_filetype_get(struct got_fileindex_entry *ie)
210 return (ie->mode & GOT_FILEIDX_MODE_FILE_TYPE_ONDISK);
214 got_fileindex_entry_filetype_set(struct got_fileindex_entry *ie, int type)
216 ie->mode &= ~GOT_FILEIDX_MODE_FILE_TYPE_ONDISK;
217 ie->mode |= (type & GOT_FILEIDX_MODE_FILE_TYPE_ONDISK);
221 got_fileindex_entry_staged_filetype_set(struct got_fileindex_entry *ie, int type)
223 ie->mode &= ~GOT_FILEIDX_MODE_FILE_TYPE_STAGED;
224 ie->mode |= ((type << GOT_FILEIDX_MODE_FILE_TYPE_STAGED_SHIFT) &
225 GOT_FILEIDX_MODE_FILE_TYPE_STAGED);
229 got_fileindex_entry_staged_filetype_get(struct got_fileindex_entry *ie)
231 return (ie->mode & GOT_FILEIDX_MODE_FILE_TYPE_STAGED) >>
232 GOT_FILEIDX_MODE_FILE_TYPE_STAGED_SHIFT;
236 got_fileindex_entry_has_blob(struct got_fileindex_entry *ie)
238 return (ie->flags & GOT_FILEIDX_F_NO_BLOB) == 0;
242 got_fileindex_entry_has_commit(struct got_fileindex_entry *ie)
244 return (ie->flags & GOT_FILEIDX_F_NO_COMMIT) == 0;
248 got_fileindex_entry_has_file_on_disk(struct got_fileindex_entry *ie)
250 return (ie->flags & GOT_FILEIDX_F_NO_FILE_ON_DISK) == 0;
254 got_fileindex_entry_was_skipped(struct got_fileindex_entry *ie)
256 return (ie->flags & GOT_FILEIDX_F_SKIPPED) != 0;
259 static const struct got_error *
260 add_entry(struct got_fileindex *fileindex, struct got_fileindex_entry *ie)
262 if (fileindex->nentries >= GOT_FILEIDX_MAX_ENTRIES)
263 return got_error(GOT_ERR_NO_SPACE);
265 RB_INSERT(got_fileindex_tree, &fileindex->entries, ie);
266 fileindex->nentries++;
270 const struct got_error *
271 got_fileindex_entry_add(struct got_fileindex *fileindex,
272 struct got_fileindex_entry *ie)
274 /* Flag this entry until it gets written out to disk. */
275 ie->flags |= GOT_FILEIDX_F_NOT_FLUSHED;
277 return add_entry(fileindex, ie);
281 got_fileindex_entry_remove(struct got_fileindex *fileindex,
282 struct got_fileindex_entry *ie)
285 * Removing an entry from the RB tree immediately breaks
286 * in-progress iterations over file index entries.
287 * So flag this entry for removal and remove it once the index
288 * is written out to disk. Meanwhile, pretend this entry no longer
289 * exists if we get queried for it again before then.
291 ie->flags |= GOT_FILEIDX_F_REMOVE_ON_FLUSH;
292 fileindex->nentries--;
295 struct got_fileindex_entry *
296 got_fileindex_entry_get(struct got_fileindex *fileindex, const char *path,
299 struct got_fileindex_entry *ie;
300 struct got_fileindex_entry key;
301 memset(&key, 0, sizeof(key));
302 key.path = (char *)path;
303 key.flags = (path_len & GOT_FILEIDX_F_PATH_LEN);
304 ie = RB_FIND(got_fileindex_tree, &fileindex->entries, &key);
305 if (ie && (ie->flags & GOT_FILEIDX_F_REMOVE_ON_FLUSH))
310 const struct got_error *
311 got_fileindex_for_each_entry_safe(struct got_fileindex *fileindex,
312 got_fileindex_cb cb, void *cb_arg)
314 const struct got_error *err;
315 struct got_fileindex_entry *ie, *tmp;
317 RB_FOREACH_SAFE(ie, got_fileindex_tree, &fileindex->entries, tmp) {
318 if (ie->flags & GOT_FILEIDX_F_REMOVE_ON_FLUSH)
320 err = (*cb)(cb_arg, ie);
327 struct got_fileindex *
328 got_fileindex_alloc(void)
330 struct got_fileindex *fileindex;
332 fileindex = calloc(1, sizeof(*fileindex));
333 if (fileindex == NULL)
336 RB_INIT(&fileindex->entries);
341 got_fileindex_free(struct got_fileindex *fileindex)
343 struct got_fileindex_entry *ie;
345 while ((ie = RB_MIN(got_fileindex_tree, &fileindex->entries))) {
346 RB_REMOVE(got_fileindex_tree, &fileindex->entries, ie);
347 got_fileindex_entry_free(ie);
352 static const struct got_error *
353 write_fileindex_val64(SHA1_CTX *ctx, uint64_t val, FILE *outfile)
358 SHA1Update(ctx, (uint8_t *)&val, sizeof(val));
359 n = fwrite(&val, 1, sizeof(val), outfile);
360 if (n != sizeof(val))
361 return got_ferror(outfile, GOT_ERR_IO);
365 static const struct got_error *
366 write_fileindex_val32(SHA1_CTX *ctx, uint32_t val, FILE *outfile)
371 SHA1Update(ctx, (uint8_t *)&val, sizeof(val));
372 n = fwrite(&val, 1, sizeof(val), outfile);
373 if (n != sizeof(val))
374 return got_ferror(outfile, GOT_ERR_IO);
378 static const struct got_error *
379 write_fileindex_val16(SHA1_CTX *ctx, uint16_t val, FILE *outfile)
384 SHA1Update(ctx, (uint8_t *)&val, sizeof(val));
385 n = fwrite(&val, 1, sizeof(val), outfile);
386 if (n != sizeof(val))
387 return got_ferror(outfile, GOT_ERR_IO);
391 static const struct got_error *
392 write_fileindex_path(SHA1_CTX *ctx, const char *path, FILE *outfile)
394 size_t n, len, pad = 0;
395 static const uint8_t zero[8] = { 0 };
398 while ((len + pad) % 8 != 0)
401 pad = 8; /* NUL-terminate */
403 SHA1Update(ctx, path, len);
404 n = fwrite(path, 1, len, outfile);
406 return got_ferror(outfile, GOT_ERR_IO);
407 SHA1Update(ctx, zero, pad);
408 n = fwrite(zero, 1, pad, outfile);
410 return got_ferror(outfile, GOT_ERR_IO);
414 static const struct got_error *
415 write_fileindex_entry(SHA1_CTX *ctx, struct got_fileindex_entry *ie,
418 const struct got_error *err;
422 err = write_fileindex_val64(ctx, ie->ctime_sec, outfile);
425 err = write_fileindex_val64(ctx, ie->ctime_nsec, outfile);
428 err = write_fileindex_val64(ctx, ie->mtime_sec, outfile);
431 err = write_fileindex_val64(ctx, ie->mtime_nsec, outfile);
435 err = write_fileindex_val32(ctx, ie->uid, outfile);
438 err = write_fileindex_val32(ctx, ie->gid, outfile);
441 err = write_fileindex_val32(ctx, ie->size, outfile);
445 err = write_fileindex_val16(ctx, ie->mode, outfile);
449 SHA1Update(ctx, ie->blob_sha1, SHA1_DIGEST_LENGTH);
450 n = fwrite(ie->blob_sha1, 1, SHA1_DIGEST_LENGTH, outfile);
451 if (n != SHA1_DIGEST_LENGTH)
452 return got_ferror(outfile, GOT_ERR_IO);
454 SHA1Update(ctx, ie->commit_sha1, SHA1_DIGEST_LENGTH);
455 n = fwrite(ie->commit_sha1, 1, SHA1_DIGEST_LENGTH, outfile);
456 if (n != SHA1_DIGEST_LENGTH)
457 return got_ferror(outfile, GOT_ERR_IO);
459 err = write_fileindex_val32(ctx, ie->flags, outfile);
463 err = write_fileindex_path(ctx, ie->path, outfile);
467 stage = got_fileindex_entry_stage_get(ie);
468 if (stage == GOT_FILEIDX_STAGE_MODIFY ||
469 stage == GOT_FILEIDX_STAGE_ADD) {
470 SHA1Update(ctx, ie->staged_blob_sha1, SHA1_DIGEST_LENGTH);
471 n = fwrite(ie->staged_blob_sha1, 1, SHA1_DIGEST_LENGTH,
473 if (n != SHA1_DIGEST_LENGTH)
474 return got_ferror(outfile, GOT_ERR_IO);
480 const struct got_error *
481 got_fileindex_write(struct got_fileindex *fileindex, FILE *outfile)
483 const struct got_error *err = NULL;
484 struct got_fileindex_hdr hdr;
486 uint8_t sha1[SHA1_DIGEST_LENGTH];
488 struct got_fileindex_entry *ie, *tmp;
492 hdr.signature = htobe32(GOT_FILE_INDEX_SIGNATURE);
493 hdr.version = htobe32(GOT_FILE_INDEX_VERSION);
494 hdr.nentries = htobe32(fileindex->nentries);
496 SHA1Update(&ctx, (uint8_t *)&hdr.signature, sizeof(hdr.signature));
497 SHA1Update(&ctx, (uint8_t *)&hdr.version, sizeof(hdr.version));
498 SHA1Update(&ctx, (uint8_t *)&hdr.nentries, sizeof(hdr.nentries));
499 n = fwrite(&hdr.signature, 1, sizeof(hdr.signature), outfile);
500 if (n != sizeof(hdr.signature))
501 return got_ferror(outfile, GOT_ERR_IO);
502 n = fwrite(&hdr.version, 1, sizeof(hdr.version), outfile);
503 if (n != sizeof(hdr.version))
504 return got_ferror(outfile, GOT_ERR_IO);
505 n = fwrite(&hdr.nentries, 1, sizeof(hdr.nentries), outfile);
506 if (n != sizeof(hdr.nentries))
507 return got_ferror(outfile, GOT_ERR_IO);
509 RB_FOREACH_SAFE(ie, got_fileindex_tree, &fileindex->entries, tmp) {
510 ie->flags &= ~GOT_FILEIDX_F_NOT_FLUSHED;
511 ie->flags &= ~GOT_FILEIDX_F_SKIPPED;
512 if (ie->flags & GOT_FILEIDX_F_REMOVE_ON_FLUSH) {
513 RB_REMOVE(got_fileindex_tree, &fileindex->entries, ie);
514 got_fileindex_entry_free(ie);
517 err = write_fileindex_entry(&ctx, ie, outfile);
522 SHA1Final(sha1, &ctx);
523 n = fwrite(sha1, 1, sizeof(sha1), outfile);
524 if (n != sizeof(sha1))
525 return got_ferror(outfile, GOT_ERR_IO);
527 if (fflush(outfile) != 0)
528 return got_error_from_errno("fflush");
533 static const struct got_error *
534 read_fileindex_val64(uint64_t *val, SHA1_CTX *ctx, FILE *infile)
538 n = fread(val, 1, sizeof(*val), infile);
539 if (n != sizeof(*val))
540 return got_ferror(infile, GOT_ERR_FILEIDX_BAD);
541 SHA1Update(ctx, (uint8_t *)val, sizeof(*val));
542 *val = be64toh(*val);
546 static const struct got_error *
547 read_fileindex_val32(uint32_t *val, SHA1_CTX *ctx, FILE *infile)
551 n = fread(val, 1, sizeof(*val), infile);
552 if (n != sizeof(*val))
553 return got_ferror(infile, GOT_ERR_FILEIDX_BAD);
554 SHA1Update(ctx, (uint8_t *)val, sizeof(*val));
555 *val = be32toh(*val);
559 static const struct got_error *
560 read_fileindex_val16(uint16_t *val, SHA1_CTX *ctx, FILE *infile)
564 n = fread(val, 1, sizeof(*val), infile);
565 if (n != sizeof(*val))
566 return got_ferror(infile, GOT_ERR_FILEIDX_BAD);
567 SHA1Update(ctx, (uint8_t *)val, sizeof(*val));
568 *val = be16toh(*val);
572 static const struct got_error *
573 read_fileindex_path(char **path, SHA1_CTX *ctx, FILE *infile)
575 const struct got_error *err = NULL;
576 const size_t chunk_size = 8;
577 size_t n, len = 0, totlen = chunk_size;
579 *path = malloc(totlen);
581 return got_error_from_errno("malloc");
584 if (len + chunk_size > totlen) {
585 char *p = reallocarray(*path, totlen + chunk_size, 1);
587 err = got_error_from_errno("reallocarray");
590 totlen += chunk_size;
593 n = fread(*path + len, 1, chunk_size, infile);
594 if (n != chunk_size) {
595 err = got_ferror(infile, GOT_ERR_FILEIDX_BAD);
598 SHA1Update(ctx, *path + len, chunk_size);
600 } while (memchr(*path + len - chunk_size, '\0', chunk_size) == NULL);
609 static const struct got_error *
610 read_fileindex_entry(struct got_fileindex_entry **iep, SHA1_CTX *ctx,
611 FILE *infile, uint32_t version)
613 const struct got_error *err;
614 struct got_fileindex_entry *ie;
619 ie = calloc(1, sizeof(*ie));
621 return got_error_from_errno("calloc");
623 err = read_fileindex_val64(&ie->ctime_sec, ctx, infile);
626 err = read_fileindex_val64(&ie->ctime_nsec, ctx, infile);
629 err = read_fileindex_val64(&ie->mtime_sec, ctx, infile);
632 err = read_fileindex_val64(&ie->mtime_nsec, ctx, infile);
636 err = read_fileindex_val32(&ie->uid, ctx, infile);
639 err = read_fileindex_val32(&ie->gid, ctx, infile);
642 err = read_fileindex_val32(&ie->size, ctx, infile);
646 err = read_fileindex_val16(&ie->mode, ctx, infile);
650 n = fread(ie->blob_sha1, 1, SHA1_DIGEST_LENGTH, infile);
651 if (n != SHA1_DIGEST_LENGTH) {
652 err = got_ferror(infile, GOT_ERR_FILEIDX_BAD);
655 SHA1Update(ctx, ie->blob_sha1, SHA1_DIGEST_LENGTH);
657 n = fread(ie->commit_sha1, 1, SHA1_DIGEST_LENGTH, infile);
658 if (n != SHA1_DIGEST_LENGTH) {
659 err = got_ferror(infile, GOT_ERR_FILEIDX_BAD);
662 SHA1Update(ctx, ie->commit_sha1, SHA1_DIGEST_LENGTH);
664 err = read_fileindex_val32(&ie->flags, ctx, infile);
668 err = read_fileindex_path(&ie->path, ctx, infile);
673 uint32_t stage = got_fileindex_entry_stage_get(ie);
674 if (stage == GOT_FILEIDX_STAGE_MODIFY ||
675 stage == GOT_FILEIDX_STAGE_ADD) {
676 n = fread(ie->staged_blob_sha1, 1, SHA1_DIGEST_LENGTH,
678 if (n != SHA1_DIGEST_LENGTH) {
679 err = got_ferror(infile, GOT_ERR_FILEIDX_BAD);
682 SHA1Update(ctx, ie->staged_blob_sha1, SHA1_DIGEST_LENGTH);
685 /* GOT_FILE_INDEX_VERSION 1 does not support staging. */
686 ie->flags &= ~GOT_FILEIDX_F_STAGE;
691 got_fileindex_entry_free(ie);
697 const struct got_error *
698 got_fileindex_read(struct got_fileindex *fileindex, FILE *infile)
700 const struct got_error *err = NULL;
701 struct got_fileindex_hdr hdr;
703 struct got_fileindex_entry *ie;
704 uint8_t sha1_expected[SHA1_DIGEST_LENGTH];
705 uint8_t sha1[SHA1_DIGEST_LENGTH];
711 n = fread(&hdr.signature, 1, sizeof(hdr.signature), infile);
712 if (n != sizeof(hdr.signature)) {
713 if (n == 0) /* EOF */
715 return got_ferror(infile, GOT_ERR_FILEIDX_BAD);
717 n = fread(&hdr.version, 1, sizeof(hdr.version), infile);
718 if (n != sizeof(hdr.version)) {
719 if (n == 0) /* EOF */
721 return got_ferror(infile, GOT_ERR_FILEIDX_BAD);
723 n = fread(&hdr.nentries, 1, sizeof(hdr.nentries), infile);
724 if (n != sizeof(hdr.nentries)) {
725 if (n == 0) /* EOF */
727 return got_ferror(infile, GOT_ERR_FILEIDX_BAD);
730 SHA1Update(&ctx, (uint8_t *)&hdr.signature, sizeof(hdr.signature));
731 SHA1Update(&ctx, (uint8_t *)&hdr.version, sizeof(hdr.version));
732 SHA1Update(&ctx, (uint8_t *)&hdr.nentries, sizeof(hdr.nentries));
734 hdr.signature = be32toh(hdr.signature);
735 hdr.version = be32toh(hdr.version);
736 hdr.nentries = be32toh(hdr.nentries);
738 if (hdr.signature != GOT_FILE_INDEX_SIGNATURE)
739 return got_error(GOT_ERR_FILEIDX_SIG);
740 if (hdr.version > GOT_FILE_INDEX_VERSION)
741 return got_error(GOT_ERR_FILEIDX_VER);
743 for (i = 0; i < hdr.nentries; i++) {
744 err = read_fileindex_entry(&ie, &ctx, infile, hdr.version);
747 err = add_entry(fileindex, ie);
752 n = fread(sha1_expected, 1, sizeof(sha1_expected), infile);
753 if (n != sizeof(sha1_expected))
754 return got_ferror(infile, GOT_ERR_FILEIDX_BAD);
755 SHA1Final(sha1, &ctx);
756 if (memcmp(sha1, sha1_expected, SHA1_DIGEST_LENGTH) != 0)
757 return got_error(GOT_ERR_FILEIDX_CSUM);
762 static struct got_fileindex_entry *
763 walk_fileindex(struct got_fileindex *fileindex, struct got_fileindex_entry *ie)
765 struct got_fileindex_entry *next;
767 next = RB_NEXT(got_fileindex_tree, &fileindex->entries, ie);
769 /* Skip entries which were added or removed by diff callbacks. */
770 while (next && (next->flags & (GOT_FILEIDX_F_NOT_FLUSHED |
771 GOT_FILEIDX_F_REMOVE_ON_FLUSH)))
772 next = RB_NEXT(got_fileindex_tree, &fileindex->entries, next);
777 static const struct got_error *
778 diff_fileindex_tree(struct got_fileindex *, struct got_fileindex_entry **ie,
779 struct got_tree_object *tree, const char *, const char *,
780 struct got_repository *, struct got_fileindex_diff_tree_cb *, void *);
782 static const struct got_error *
783 walk_tree(struct got_tree_entry **next, struct got_fileindex *fileindex,
784 struct got_fileindex_entry **ie, struct got_tree_object *tree, int *tidx,
785 const char *path, const char *entry_name, struct got_repository *repo,
786 struct got_fileindex_diff_tree_cb *cb, void *cb_arg)
788 const struct got_error *err = NULL;
789 struct got_tree_entry *te = got_object_tree_get_entry(tree, *tidx);
791 if (!got_object_tree_entry_is_submodule(te) &&
792 S_ISDIR(got_tree_entry_get_mode(te))) {
794 struct got_tree_object *subtree;
796 if (asprintf(&subpath, "%s%s%s", path,
797 path[0] == '\0' ? "" : "/",
798 got_tree_entry_get_name(te)) == -1)
799 return got_error_from_errno("asprintf");
801 err = got_object_open_as_tree(&subtree, repo,
802 got_tree_entry_get_id(te));
808 err = diff_fileindex_tree(fileindex, ie, subtree, subpath,
809 entry_name, repo, cb, cb_arg);
811 got_object_tree_close(subtree);
817 *next = got_object_tree_get_entry(tree, *tidx);
821 static const struct got_error *
822 diff_fileindex_tree(struct got_fileindex *fileindex,
823 struct got_fileindex_entry **ie, struct got_tree_object *tree,
824 const char *path, const char *entry_name, struct got_repository *repo,
825 struct got_fileindex_diff_tree_cb *cb, void *cb_arg)
827 const struct got_error *err = NULL;
828 struct got_tree_entry *te = NULL;
829 size_t path_len = strlen(path);
830 struct got_fileindex_entry *next;
833 te = got_object_tree_get_entry(tree, tidx);
834 while ((*ie && got_path_is_child((*ie)->path, path, path_len)) || te) {
837 const char *te_name = got_tree_entry_get_name(te);
839 if (asprintf(&te_path, "%s/%s", path, te_name) == -1) {
840 err = got_error_from_errno("asprintf");
843 cmp = got_path_cmp((*ie)->path, te_path,
844 got_fileindex_entry_path_len(*ie), strlen(te_path));
847 if (got_path_is_child((*ie)->path, path,
849 !got_object_tree_entry_is_submodule(te) &&
850 (entry_name == NULL ||
851 strcmp(te_name, entry_name) == 0)) {
852 err = cb->diff_old_new(cb_arg, *ie, te,
854 if (err || entry_name)
857 *ie = walk_fileindex(fileindex, *ie);
858 err = walk_tree(&te, fileindex, ie, tree, &tidx,
859 path, entry_name, repo, cb, cb_arg);
860 } else if (cmp < 0) {
861 next = walk_fileindex(fileindex, *ie);
862 if (got_path_is_child((*ie)->path, path,
863 path_len) && entry_name == NULL) {
864 err = cb->diff_old(cb_arg, *ie, path);
865 if (err || entry_name)
870 if ((entry_name == NULL ||
871 strcmp(te_name, entry_name) == 0)) {
872 err = cb->diff_new(cb_arg, te, path);
873 if (err || entry_name)
876 err = walk_tree(&te, fileindex, ie, tree, &tidx,
877 path, entry_name, repo, cb, cb_arg);
882 next = walk_fileindex(fileindex, *ie);
883 if (got_path_is_child((*ie)->path, path, path_len) &&
884 (entry_name == NULL ||
885 (te && strcmp(got_tree_entry_get_name(te),
886 entry_name) == 0))) {
887 err = cb->diff_old(cb_arg, *ie, path);
888 if (err || entry_name)
893 if (!got_object_tree_entry_is_submodule(te) &&
894 (entry_name == NULL ||
895 strcmp(got_tree_entry_get_name(te), entry_name)
897 err = cb->diff_new(cb_arg, te, path);
898 if (err || entry_name)
901 err = walk_tree(&te, fileindex, ie, tree, &tidx, path,
902 entry_name, repo, cb, cb_arg);
911 const struct got_error *
912 got_fileindex_diff_tree(struct got_fileindex *fileindex,
913 struct got_tree_object *tree, const char *path, const char *entry_name,
914 struct got_repository *repo,
915 struct got_fileindex_diff_tree_cb *cb, void *cb_arg)
917 struct got_fileindex_entry *ie;
918 ie = RB_MIN(got_fileindex_tree, &fileindex->entries);
919 while (ie && !got_path_is_child(ie->path, path, strlen(path)))
920 ie = walk_fileindex(fileindex, ie);
921 return diff_fileindex_tree(fileindex, &ie, tree, path, entry_name, repo,
925 static const struct got_error *
926 diff_fileindex_dir(struct got_fileindex *, struct got_fileindex_entry **,
927 struct got_pathlist_head *, int, const char *, const char *,
928 struct got_repository *, struct got_fileindex_diff_dir_cb *, void *);
930 static const struct got_error *
931 read_dirlist(struct got_pathlist_head *dirlist, DIR *dir, const char *path)
933 const struct got_error *err = NULL;
934 struct got_pathlist_entry *new = NULL;
935 struct dirent *dep = NULL;
936 struct dirent *de = NULL;
939 de = malloc(sizeof(struct dirent) + NAME_MAX + 1);
941 err = got_error_from_errno("malloc");
945 if (readdir_r(dir, de, &dep) != 0) {
946 err = got_error_from_errno("readdir_r");
955 if (strcmp(de->d_name, ".") == 0 ||
956 strcmp(de->d_name, "..") == 0 ||
958 strcmp(de->d_name, GOT_WORKTREE_GOT_DIR) == 0)) {
963 err = got_pathlist_insert(&new, dirlist, de->d_name, de);
969 err = got_error(GOT_ERR_DIR_DUP_ENTRY);
979 free_dirlist(struct got_pathlist_head *dirlist)
981 struct got_pathlist_entry *dle;
983 TAILQ_FOREACH(dle, dirlist, entry)
985 got_pathlist_free(dirlist);
988 static const struct got_error *
989 walk_dir(struct got_pathlist_entry **next, struct got_fileindex *fileindex,
990 struct got_fileindex_entry **ie, struct got_pathlist_entry *dle, int fd,
991 const char *path, const char *rootpath, struct got_repository *repo,
992 int ignore, struct got_fileindex_diff_dir_cb *cb, void *cb_arg)
994 const struct got_error *err = NULL;
995 struct dirent *de = dle->data;
1002 if (de->d_type == DT_UNKNOWN) {
1003 /* Occurs on NFS mounts without "readdir plus" RPC. */
1005 if (asprintf(&dir_path, "%s/%s", rootpath, path) == -1)
1006 return got_error_from_errno("asprintf");
1007 err = got_path_dirent_type(&type, dir_path, de);
1014 if (type == DT_DIR && !ignore) {
1017 struct got_pathlist_head subdirlist;
1019 TAILQ_INIT(&subdirlist);
1021 if (asprintf(&subpath, "%s%s%s", path,
1022 path[0] == '\0' ? "" : "/", de->d_name) == -1)
1023 return got_error_from_errno("asprintf");
1025 if (asprintf(&subdirpath, "%s/%s", rootpath, subpath) == -1) {
1027 return got_error_from_errno("asprintf");
1030 subdirfd = openat(fd, de->d_name,
1031 O_RDONLY | O_NOFOLLOW | O_DIRECTORY);
1032 if (subdirfd == -1) {
1033 if (errno == EACCES) {
1034 *next = TAILQ_NEXT(dle, entry);
1037 err = got_error_from_errno2("openat", subdirpath);
1043 subdir = fdopendir(subdirfd);
1045 return got_error_from_errno2("fdopendir", path);
1047 err = read_dirlist(&subdirlist, subdir, subdirpath);
1054 err = diff_fileindex_dir(fileindex, ie, &subdirlist,
1055 dirfd(subdir), rootpath, subpath, repo, cb, cb_arg);
1056 if (subdir && closedir(subdir) == -1 && err == NULL)
1057 err = got_error_from_errno2("closedir", subdirpath);
1060 free_dirlist(&subdirlist);
1065 *next = TAILQ_NEXT(dle, entry);
1069 static const struct got_error *
1070 diff_fileindex_dir(struct got_fileindex *fileindex,
1071 struct got_fileindex_entry **ie, struct got_pathlist_head *dirlist,
1072 int dirfd, const char *rootpath, const char *path,
1073 struct got_repository *repo,
1074 struct got_fileindex_diff_dir_cb *cb, void *cb_arg)
1076 const struct got_error *err = NULL;
1077 struct dirent *de = NULL;
1078 size_t path_len = strlen(path);
1079 struct got_pathlist_entry *dle;
1082 if (cb->diff_traverse) {
1083 err = cb->diff_traverse(cb_arg, path, dirfd);
1088 dle = TAILQ_FIRST(dirlist);
1089 while ((*ie && got_path_is_child((*ie)->path, path, path_len)) || dle) {
1094 if (asprintf(&de_path, "%s/%s", path,
1095 de->d_name) == -1) {
1096 err = got_error_from_errno("asprintf");
1099 cmp = got_path_cmp((*ie)->path, de_path,
1100 got_fileindex_entry_path_len(*ie),
1101 strlen(path) + 1 + strlen(de->d_name));
1104 err = cb->diff_old_new(cb_arg, *ie, de, path,
1108 *ie = walk_fileindex(fileindex, *ie);
1109 err = walk_dir(&dle, fileindex, ie, dle, dirfd,
1110 path, rootpath, repo, 0, cb, cb_arg);
1111 } else if (cmp < 0 ) {
1112 err = cb->diff_old(cb_arg, *ie, path);
1115 *ie = walk_fileindex(fileindex, *ie);
1117 err = cb->diff_new(&ignore, cb_arg, de, path,
1121 err = walk_dir(&dle, fileindex, ie, dle, dirfd,
1122 path, rootpath, repo, ignore, cb, cb_arg);
1127 err = cb->diff_old(cb_arg, *ie, path);
1130 *ie = walk_fileindex(fileindex, *ie);
1133 err = cb->diff_new(&ignore, cb_arg, de, path, dirfd);
1136 err = walk_dir(&dle, fileindex, ie, dle, dirfd, path,
1137 rootpath, repo, ignore, cb, cb_arg);
1146 const struct got_error *
1147 got_fileindex_diff_dir(struct got_fileindex *fileindex, int fd,
1148 const char *rootpath, const char *path, struct got_repository *repo,
1149 struct got_fileindex_diff_dir_cb *cb, void *cb_arg)
1151 const struct got_error *err;
1152 struct got_fileindex_entry *ie;
1153 struct got_pathlist_head dirlist;
1157 TAILQ_INIT(&dirlist);
1160 * Duplicate the file descriptor so we can call closedir() below
1161 * without closing the file descriptor passed in by our caller.
1165 return got_error_from_errno2("dup", path);
1166 if (lseek(fd2, 0, SEEK_SET) == -1) {
1167 err = got_error_from_errno2("lseek", path);
1171 dir = fdopendir(fd2);
1173 err = got_error_from_errno2("fdopendir", path);
1177 err = read_dirlist(&dirlist, dir, path);
1183 ie = RB_MIN(got_fileindex_tree, &fileindex->entries);
1184 while (ie && !got_path_is_child(ie->path, path, strlen(path)))
1185 ie = walk_fileindex(fileindex, ie);
1186 err = diff_fileindex_dir(fileindex, &ie, &dirlist, dirfd(dir),
1187 rootpath, path, repo, cb, cb_arg);
1189 if (closedir(dir) == -1 && err == NULL)
1190 err = got_error_from_errno2("closedir", path);
1191 free_dirlist(&dirlist);
1195 RB_GENERATE(got_fileindex_tree, got_fileindex_entry, entry, got_fileindex_cmp);