2 * Copyright (c) 2019 Ori Bernstein <ori@openbsd.org>
3 * Copyright (c) 2020, 2022 Stefan Sperling <stsp@openbsd.org>
5 * Permission to use, copy, modify, and distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18 #include <sys/queue.h>
21 #include <sys/types.h>
41 #include "got_error.h"
42 #include "got_object.h"
44 #include "got_lib_sha1.h"
45 #include "got_lib_delta.h"
46 #include "got_lib_inflate.h"
47 #include "got_lib_object.h"
48 #include "got_lib_object_parse.h"
49 #include "got_lib_object_idset.h"
50 #include "got_lib_privsep.h"
51 #include "got_lib_pack.h"
52 #include "got_lib_ratelimit.h"
53 #include "got_lib_pack_index.h"
54 #include "got_lib_delta_cache.h"
56 struct got_indexed_object {
57 struct got_object_id id;
60 * Has this object been fully resolved?
61 * If so, we know its ID, otherwise we don't and 'id' is invalid.
65 /* Offset of type+size field for this object in pack file. */
68 /* Type+size values parsed from pack file. */
72 /* Length of on-disk type+size data. */
75 /* Length of object data following type+size. */
83 struct got_object_id ref_id;
86 /* For offset deltas. */
88 size_t base_offsetlen;
94 putbe32(char *b, uint32_t n)
102 static const struct got_error *
103 get_obj_type_label(const char **label, int obj_type)
105 const struct got_error *err = NULL;
108 case GOT_OBJ_TYPE_BLOB:
109 *label = GOT_OBJ_LABEL_BLOB;
111 case GOT_OBJ_TYPE_TREE:
112 *label = GOT_OBJ_LABEL_TREE;
114 case GOT_OBJ_TYPE_COMMIT:
115 *label = GOT_OBJ_LABEL_COMMIT;
117 case GOT_OBJ_TYPE_TAG:
118 *label = GOT_OBJ_LABEL_TAG;
122 err = got_error(GOT_ERR_OBJ_TYPE);
129 static const struct got_error *
130 read_checksum(uint32_t *crc, SHA1_CTX *sha1_ctx, int fd, size_t len)
136 for (n = len; n > 0; n -= r){
137 r = read(fd, buf, n > sizeof(buf) ? sizeof(buf) : n);
139 return got_error_from_errno("read");
143 *crc = crc32(*crc, buf, r);
145 SHA1Update(sha1_ctx, buf, r);
151 static const struct got_error *
152 read_file_sha1(SHA1_CTX *ctx, FILE *f, size_t len)
157 for (n = len; n > 0; n -= r) {
158 r = fread(buf, 1, n > sizeof(buf) ? sizeof(buf) : n, f);
162 return got_ferror(f, GOT_ERR_IO);
164 SHA1Update(ctx, buf, r);
170 static const struct got_error *
171 read_packed_object(struct got_pack *pack, struct got_indexed_object *obj,
172 FILE *tmpfile, SHA1_CTX *pack_sha1_ctx)
174 const struct got_error *err = NULL;
176 uint8_t *data = NULL;
181 const char *obj_label;
182 size_t mapoff = obj->off;
183 struct got_inflate_checksum csum;
185 memset(&csum, 0, sizeof(csum));
186 csum.input_sha1 = pack_sha1_ctx;
187 csum.input_crc = &obj->crc;
189 err = got_pack_parse_object_type_and_size(&obj->type, &obj->size,
190 &obj->tslen, pack, obj->off);
195 obj->crc = crc32(obj->crc, pack->map + mapoff, obj->tslen);
196 SHA1Update(pack_sha1_ctx, pack->map + mapoff, obj->tslen);
197 mapoff += obj->tslen;
199 /* XXX Seek back and get the CRC of on-disk type+size bytes. */
200 if (lseek(pack->fd, obj->off, SEEK_SET) == -1)
201 return got_error_from_errno("lseek");
202 err = read_checksum(&obj->crc, pack_sha1_ctx,
203 pack->fd, obj->tslen);
209 case GOT_OBJ_TYPE_BLOB:
210 case GOT_OBJ_TYPE_COMMIT:
211 case GOT_OBJ_TYPE_TREE:
212 case GOT_OBJ_TYPE_TAG:
213 if (obj->size > GOT_DELTA_RESULT_SIZE_CACHED_MAX) {
214 if (fseek(tmpfile, 0L, SEEK_SET) == -1) {
215 err = got_error_from_errno("fseek");
219 err = got_inflate_to_file_mmap(&datalen,
220 &obj->len, &csum, pack->map, mapoff,
221 pack->filesize - mapoff, tmpfile);
223 err = got_inflate_to_file_fd(&datalen,
224 &obj->len, &csum, pack->fd, tmpfile);
228 err = got_inflate_to_mem_mmap(&data, &datalen,
229 &obj->len, &csum, pack->map, mapoff,
230 pack->filesize - mapoff);
232 err = got_inflate_to_mem_fd(&data, &datalen,
233 &obj->len, &csum, obj->size, pack->fd);
239 err = get_obj_type_label(&obj_label, obj->type);
244 if (asprintf(&header, "%s %lld", obj_label,
245 (long long)obj->size) == -1) {
246 err = got_error_from_errno("asprintf");
250 headerlen = strlen(header) + 1;
251 SHA1Update(&ctx, header, headerlen);
252 if (obj->size > GOT_DELTA_RESULT_SIZE_CACHED_MAX) {
253 err = read_file_sha1(&ctx, tmpfile, datalen);
260 SHA1Update(&ctx, data, datalen);
261 SHA1Final(obj->id.sha1, &ctx);
265 case GOT_OBJ_TYPE_REF_DELTA:
266 memset(obj->id.sha1, 0xff, SHA1_DIGEST_LENGTH);
268 if (mapoff + SHA1_DIGEST_LENGTH >= pack->filesize) {
269 err = got_error(GOT_ERR_BAD_PACKFILE);
272 memcpy(obj->delta.ref.ref_id.sha1, pack->map + mapoff,
274 obj->crc = crc32(obj->crc, pack->map + mapoff,
276 SHA1Update(pack_sha1_ctx, pack->map + mapoff,
278 mapoff += SHA1_DIGEST_LENGTH;
279 err = got_inflate_to_mem_mmap(NULL, &datalen,
280 &obj->len, &csum, pack->map, mapoff,
281 pack->filesize - mapoff);
285 n = read(pack->fd, obj->delta.ref.ref_id.sha1,
288 err = got_error_from_errno("read");
291 if (n < sizeof(obj->id)) {
292 err = got_error(GOT_ERR_BAD_PACKFILE);
295 obj->crc = crc32(obj->crc, obj->delta.ref.ref_id.sha1,
297 SHA1Update(pack_sha1_ctx, obj->delta.ref.ref_id.sha1,
299 err = got_inflate_to_mem_fd(NULL, &datalen, &obj->len,
300 &csum, obj->size, pack->fd);
304 obj->len += SHA1_DIGEST_LENGTH;
306 case GOT_OBJ_TYPE_OFFSET_DELTA:
307 memset(obj->id.sha1, 0xff, SHA1_DIGEST_LENGTH);
308 err = got_pack_parse_offset_delta(&obj->delta.ofs.base_offset,
309 &obj->delta.ofs.base_offsetlen, pack, obj->off,
315 obj->crc = crc32(obj->crc, pack->map + mapoff,
316 obj->delta.ofs.base_offsetlen);
317 SHA1Update(pack_sha1_ctx, pack->map + mapoff,
318 obj->delta.ofs.base_offsetlen);
319 mapoff += obj->delta.ofs.base_offsetlen;
320 err = got_inflate_to_mem_mmap(NULL, &datalen,
321 &obj->len, &csum, pack->map, mapoff,
322 pack->filesize - mapoff);
327 * XXX Seek back and get CRC and SHA1 of on-disk
330 if (lseek(pack->fd, obj->off + obj->tslen, SEEK_SET)
332 err = got_error_from_errno("lseek");
335 err = read_checksum(&obj->crc, pack_sha1_ctx,
336 pack->fd, obj->delta.ofs.base_offsetlen);
340 err = got_inflate_to_mem_fd(NULL, &datalen, &obj->len,
341 &csum, obj->size, pack->fd);
345 obj->len += obj->delta.ofs.base_offsetlen;
348 err = got_error(GOT_ERR_OBJ_TYPE);
355 const struct got_error *
356 got_pack_hwrite(int fd, void *buf, int len, SHA1_CTX *ctx)
360 SHA1Update(ctx, buf, len);
362 w = write(fd, buf, len);
364 return got_error_from_errno("write");
366 return got_error(GOT_ERR_IO);
371 static const struct got_error *
372 resolve_deltified_object(struct got_pack *pack, struct got_packidx *packidx,
373 struct got_indexed_object *obj, FILE *tmpfile, FILE *delta_base_file,
374 FILE *delta_accum_file)
376 const struct got_error *err = NULL;
377 struct got_delta_chain deltas;
378 struct got_delta *delta;
386 const char *obj_label;
389 STAILQ_INIT(&deltas.entries);
391 err = got_pack_resolve_delta_chain(&deltas, packidx, pack,
392 obj->off, obj->tslen, obj->type, obj->size,
393 GOT_DELTA_CHAIN_RECURSION_MAX);
397 err = got_pack_get_delta_chain_max_size(&max_size, &deltas, pack);
400 if (max_size > GOT_DELTA_RESULT_SIZE_CACHED_MAX) {
402 rewind(delta_base_file);
403 rewind(delta_accum_file);
404 err = got_pack_dump_delta_chain_to_file(&len, &deltas,
405 pack, tmpfile, delta_base_file, delta_accum_file);
409 err = got_pack_dump_delta_chain_to_mem(&buf, &len,
415 err = got_delta_chain_get_base_type(&base_obj_type, &deltas);
418 err = get_obj_type_label(&obj_label, base_obj_type);
421 if (asprintf(&header, "%s %zd", obj_label, len) == -1) {
422 err = got_error_from_errno("asprintf");
425 headerlen = strlen(header) + 1;
427 SHA1Update(&ctx, header, headerlen);
428 if (max_size > GOT_DELTA_RESULT_SIZE_CACHED_MAX) {
429 err = read_file_sha1(&ctx, tmpfile, len);
433 SHA1Update(&ctx, buf, len);
434 SHA1Final(obj->id.sha1, &ctx);
438 while (!STAILQ_EMPTY(&deltas.entries)) {
439 delta = STAILQ_FIRST(&deltas.entries);
440 STAILQ_REMOVE_HEAD(&deltas.entries, entry);
446 /* Determine the slot in the pack index a given object ID should use. */
448 find_object_idx(struct got_packidx *packidx, uint8_t *sha1)
450 u_int8_t id0 = sha1[0];
451 uint32_t nindexed = be32toh(packidx->hdr.fanout_table[0xff]);
452 int left = 0, right = nindexed - 1;
456 left = be32toh(packidx->hdr.fanout_table[id0 - 1]);
458 while (left <= right) {
459 struct got_packidx_object_id *oid;
461 i = ((left + right) / 2);
462 oid = &packidx->hdr.sorted_ids[i];
464 cmp = memcmp(sha1, oid->sha1, SHA1_DIGEST_LENGTH);
466 return -1; /* object already indexed */
478 print_packidx(struct got_packidx *packidx)
480 uint32_t nindexed = be32toh(packidx->hdr.fanout_table[0xff]);
483 fprintf(stderr, "object IDs:\n");
484 for (i = 0; i < nindexed; i++) {
485 char hex[SHA1_DIGEST_STRING_LENGTH];
486 got_sha1_digest_to_str(packidx->hdr.sorted_ids[i].sha1,
488 fprintf(stderr, "%s\n", hex);
490 fprintf(stderr, "\n");
492 fprintf(stderr, "object offsets:\n");
493 for (i = 0; i < nindexed; i++) {
494 uint32_t offset = be32toh(packidx->hdr.offsets[i]);
495 if (offset & GOT_PACKIDX_OFFSET_VAL_IS_LARGE_IDX) {
496 int j = offset & GOT_PACKIDX_OFFSET_VAL_MASK;
497 fprintf(stderr, "%u -> %llu\n", offset,
498 be64toh(packidx->hdr.large_offsets[j]));
500 fprintf(stderr, "%u\n", offset);
502 fprintf(stderr, "\n");
504 fprintf(stderr, "fanout table:");
505 for (i = 0; i <= 0xff; i++)
506 fprintf(stderr, " %u", be32toh(packidx->hdr.fanout_table[i]));
507 fprintf(stderr, "\n");
512 add_indexed_object(struct got_packidx *packidx, uint32_t idx,
513 struct got_indexed_object *obj)
517 memcpy(packidx->hdr.sorted_ids[idx].sha1, obj->id.sha1,
519 packidx->hdr.crc32[idx] = htobe32(obj->crc);
520 if (obj->off < GOT_PACKIDX_OFFSET_VAL_IS_LARGE_IDX)
521 packidx->hdr.offsets[idx] = htobe32(obj->off);
523 packidx->hdr.offsets[idx] = htobe32(packidx->nlargeobj |
524 GOT_PACKIDX_OFFSET_VAL_IS_LARGE_IDX);
525 packidx->hdr.large_offsets[packidx->nlargeobj] =
527 packidx->nlargeobj++;
530 for (i = obj->id.sha1[0]; i <= 0xff; i++) {
531 uint32_t n = be32toh(packidx->hdr.fanout_table[i]);
532 packidx->hdr.fanout_table[i] = htobe32(n + 1);
537 indexed_obj_cmp(const void *pa, const void *pb)
539 struct got_indexed_object *a, *b;
541 a = (struct got_indexed_object *)pa;
542 b = (struct got_indexed_object *)pb;
543 return got_object_id_cmp(&a->id, &b->id);
547 make_packidx(struct got_packidx *packidx, uint32_t nobj,
548 struct got_indexed_object *objects)
550 struct got_indexed_object *obj;
554 qsort(objects, nobj, sizeof(struct got_indexed_object),
557 memset(packidx->hdr.fanout_table, 0,
558 GOT_PACKIDX_V2_FANOUT_TABLE_ITEMS * sizeof(uint32_t));
559 packidx->nlargeobj = 0;
561 for (i = 0; i < nobj; i++) {
564 add_indexed_object(packidx, idx++, obj);
569 update_packidx(struct got_packidx *packidx, uint32_t nobj,
570 struct got_indexed_object *obj)
573 uint32_t nindexed = be32toh(packidx->hdr.fanout_table[0xff]);
575 idx = find_object_idx(packidx, obj->id.sha1);
577 char hex[SHA1_DIGEST_STRING_LENGTH];
578 got_sha1_digest_to_str(obj->id.sha1, hex, sizeof(hex));
579 return; /* object already indexed */
582 memmove(&packidx->hdr.sorted_ids[idx + 1],
583 &packidx->hdr.sorted_ids[idx],
584 sizeof(struct got_packidx_object_id) * (nindexed - idx));
585 memmove(&packidx->hdr.offsets[idx + 1], &packidx->hdr.offsets[idx],
586 sizeof(uint32_t) * (nindexed - idx));
588 add_indexed_object(packidx, idx, obj);
591 static const struct got_error *
592 report_progress(uint32_t nobj_total, uint32_t nobj_indexed, uint32_t nobj_loose,
593 uint32_t nobj_resolved, struct got_ratelimit *rl,
594 got_pack_index_progress_cb progress_cb, void *progress_arg)
596 const struct got_error *err;
600 err = got_ratelimit_check(&elapsed, rl);
605 return progress_cb(progress_arg, nobj_total, nobj_indexed, nobj_loose,
609 const struct got_error *
610 got_pack_index(struct got_pack *pack, int idxfd, FILE *tmpfile,
611 FILE *delta_base_file, FILE *delta_accum_file, uint8_t *pack_sha1_expected,
612 got_pack_index_progress_cb progress_cb, void *progress_arg,
613 struct got_ratelimit *rl)
615 const struct got_error *err;
616 struct got_packfile_hdr hdr;
617 struct got_packidx packidx;
619 char pack_sha1[SHA1_DIGEST_LENGTH];
620 uint32_t nobj, nvalid, nloose, nresolved = 0, i;
621 struct got_indexed_object *objects = NULL, *obj;
623 uint8_t packidx_hash[SHA1_DIGEST_LENGTH];
625 int pass, have_ref_deltas = 0, first_delta_idx = -1;
627 int p_indexed = 0, last_p_indexed = -1;
628 int p_resolved = 0, last_p_resolved = -1;
630 /* Require that pack file header and SHA1 trailer are present. */
631 if (pack->filesize < sizeof(hdr) + SHA1_DIGEST_LENGTH)
632 return got_error_msg(GOT_ERR_BAD_PACKFILE,
636 memcpy(&hdr, pack->map, sizeof(hdr));
637 mapoff += sizeof(hdr);
639 r = read(pack->fd, &hdr, sizeof(hdr));
641 return got_error_from_errno("read");
643 return got_error_msg(GOT_ERR_BAD_PACKFILE,
647 if (hdr.signature != htobe32(GOT_PACKFILE_SIGNATURE))
648 return got_error_msg(GOT_ERR_BAD_PACKFILE,
649 "bad packfile signature");
650 if (hdr.version != htobe32(GOT_PACKFILE_VERSION))
651 return got_error_msg(GOT_ERR_BAD_PACKFILE,
652 "bad packfile version");
653 nobj = be32toh(hdr.nobjects);
655 return got_error_msg(GOT_ERR_BAD_PACKFILE,
656 "bad packfile with zero objects");
658 /* We compute the SHA1 of pack file contents and verify later on. */
660 SHA1Update(&ctx, (void *)&hdr, sizeof(hdr));
663 * Create an in-memory pack index which will grow as objects
664 * IDs in the pack file are discovered. Only fields used to
665 * read deltified objects will be needed by the pack.c library
666 * code, so setting up just a pack index header is sufficient.
668 memset(&packidx, 0, sizeof(packidx));
669 packidx.hdr.magic = malloc(sizeof(uint32_t));
670 if (packidx.hdr.magic == NULL)
671 return got_error_from_errno("malloc");
672 *packidx.hdr.magic = htobe32(GOT_PACKIDX_V2_MAGIC);
673 packidx.hdr.version = malloc(sizeof(uint32_t));
674 if (packidx.hdr.version == NULL) {
675 err = got_error_from_errno("malloc");
678 *packidx.hdr.version = htobe32(GOT_PACKIDX_VERSION);
679 packidx.hdr.fanout_table = calloc(GOT_PACKIDX_V2_FANOUT_TABLE_ITEMS,
681 if (packidx.hdr.fanout_table == NULL) {
682 err = got_error_from_errno("calloc");
685 packidx.hdr.sorted_ids = calloc(nobj,
686 sizeof(struct got_packidx_object_id));
687 if (packidx.hdr.sorted_ids == NULL) {
688 err = got_error_from_errno("calloc");
691 packidx.hdr.crc32 = calloc(nobj, sizeof(uint32_t));
692 if (packidx.hdr.crc32 == NULL) {
693 err = got_error_from_errno("calloc");
696 packidx.hdr.offsets = calloc(nobj, sizeof(uint32_t));
697 if (packidx.hdr.offsets == NULL) {
698 err = got_error_from_errno("calloc");
701 /* Large offsets table is empty for pack files < 2 GB. */
702 if (pack->filesize >= GOT_PACKIDX_OFFSET_VAL_IS_LARGE_IDX) {
703 packidx.hdr.large_offsets = calloc(nobj, sizeof(uint64_t));
704 if (packidx.hdr.large_offsets == NULL) {
705 err = got_error_from_errno("calloc");
712 objects = calloc(nobj, sizeof(struct got_indexed_object));
714 return got_error_from_errno("calloc");
717 * First pass: locate all objects and identify un-deltified objects.
719 * When this pass has completed we will know offset, type, size, and
720 * CRC information for all objects in this pack file. We won't know
721 * any of the actual object IDs of deltified objects yet since we
722 * will not yet attempt to combine deltas.
725 for (i = 0; i < nobj; i++) {
726 /* Don't send too many progress privsep messages. */
727 p_indexed = ((i + 1) * 100) / nobj;
728 if (p_indexed != last_p_indexed) {
729 err = report_progress(nobj, i + 1, nloose, 0,
730 rl, progress_cb, progress_arg);
733 last_p_indexed = p_indexed;
737 obj->crc = crc32(0L, NULL, 0);
739 /* Store offset to type+size information for this object. */
743 obj->off = lseek(pack->fd, 0, SEEK_CUR);
744 if (obj->off == -1) {
745 err = got_error_from_errno("lseek");
750 err = read_packed_object(pack, obj, tmpfile, &ctx);
755 mapoff += obj->tslen + obj->len;
757 if (lseek(pack->fd, obj->off + obj->tslen + obj->len,
759 err = got_error_from_errno("lseek");
764 if (obj->type == GOT_OBJ_TYPE_BLOB ||
765 obj->type == GOT_OBJ_TYPE_TREE ||
766 obj->type == GOT_OBJ_TYPE_COMMIT ||
767 obj->type == GOT_OBJ_TYPE_TAG) {
771 if (first_delta_idx == -1)
773 if (obj->type == GOT_OBJ_TYPE_REF_DELTA)
780 * Having done a full pass over the pack file and can now
781 * verify its checksum.
783 SHA1Final(pack_sha1, &ctx);
785 if (memcmp(pack_sha1_expected, pack_sha1, SHA1_DIGEST_LENGTH) != 0) {
786 err = got_error(GOT_ERR_PACKFILE_CSUM);
790 /* Verify the SHA1 checksum stored at the end of the pack file. */
792 memcpy(pack_sha1_expected, pack->map +
793 pack->filesize - SHA1_DIGEST_LENGTH,
797 if (lseek(pack->fd, -SHA1_DIGEST_LENGTH, SEEK_END) == -1) {
798 err = got_error_from_errno("lseek");
801 n = read(pack->fd, pack_sha1_expected, SHA1_DIGEST_LENGTH);
803 err = got_error_from_errno("read");
806 if (n != SHA1_DIGEST_LENGTH) {
807 err = got_error(GOT_ERR_IO);
811 if (memcmp(pack_sha1, pack_sha1_expected, SHA1_DIGEST_LENGTH) != 0) {
812 err = got_error_msg(GOT_ERR_BAD_PACKFILE,
813 "bad checksum in pack file trailer");
817 if (first_delta_idx == -1)
820 /* In order to resolve ref deltas we need an in-progress pack index. */
822 make_packidx(&packidx, nobj, objects);
825 * Second pass: We can now resolve deltas to compute the IDs of
826 * objects which appear in deltified form. Because deltas can be
827 * chained this pass may require a couple of iterations until all
828 * IDs of deltified objects have been discovered.
831 while (nvalid != nobj) {
834 * This loop will only run once unless the pack file
835 * contains ref deltas which refer to objects located
836 * later in the pack file, which is unusual.
837 * Offset deltas can always be resolved in one pass
838 * unless the packfile is corrupt.
840 for (i = first_delta_idx; i < nobj; i++) {
842 if (obj->type != GOT_OBJ_TYPE_REF_DELTA &&
843 obj->type != GOT_OBJ_TYPE_OFFSET_DELTA)
849 if (pack->map == NULL && lseek(pack->fd,
850 obj->off + obj->tslen, SEEK_SET) == -1) {
851 err = got_error_from_errno("lseek");
855 err = resolve_deltified_object(pack, &packidx, obj,
856 tmpfile, delta_base_file, delta_accum_file);
858 if (err->code != GOT_ERR_NO_OBJ)
861 * We cannot resolve this object yet because
862 * a delta base is unknown. Try again later.
870 update_packidx(&packidx, nobj, obj);
871 /* Don't send too many progress privsep messages. */
872 p_resolved = ((nresolved + n) * 100) / nobj;
873 if (p_resolved != last_p_resolved) {
874 err = report_progress(nobj, nobj,
875 nloose, nresolved + n, rl,
876 progress_cb, progress_arg);
879 last_p_resolved = p_resolved;
883 if (pass++ > 3 && n == 0) {
884 err = got_error_msg(GOT_ERR_BAD_PACKFILE,
885 "could not resolve any of deltas; packfile could "
893 if (nloose + nresolved != nobj) {
895 snprintf(msg, sizeof(msg), "discovered only %d of %d objects",
896 nloose + nresolved, nobj);
897 err = got_error_msg(GOT_ERR_BAD_PACKFILE, msg);
901 err = report_progress(nobj, nobj, nloose, nresolved, NULL,
902 progress_cb, progress_arg);
906 make_packidx(&packidx, nobj, objects);
912 putbe32(buf, GOT_PACKIDX_V2_MAGIC);
913 putbe32(buf + 4, GOT_PACKIDX_VERSION);
914 err = got_pack_hwrite(idxfd, buf, 8, &ctx);
917 err = got_pack_hwrite(idxfd, packidx.hdr.fanout_table,
918 GOT_PACKIDX_V2_FANOUT_TABLE_ITEMS * sizeof(uint32_t), &ctx);
921 err = got_pack_hwrite(idxfd, packidx.hdr.sorted_ids,
922 nobj * SHA1_DIGEST_LENGTH, &ctx);
925 err = got_pack_hwrite(idxfd, packidx.hdr.crc32,
926 nobj * sizeof(uint32_t), &ctx);
929 err = got_pack_hwrite(idxfd, packidx.hdr.offsets,
930 nobj * sizeof(uint32_t), &ctx);
933 if (packidx.nlargeobj > 0) {
934 err = got_pack_hwrite(idxfd, packidx.hdr.large_offsets,
935 packidx.nlargeobj * sizeof(uint64_t), &ctx);
939 err = got_pack_hwrite(idxfd, pack_sha1, SHA1_DIGEST_LENGTH, &ctx);
943 SHA1Final(packidx_hash, &ctx);
944 w = write(idxfd, packidx_hash, sizeof(packidx_hash));
946 err = got_error_from_errno("write");
949 if (w != sizeof(packidx_hash)) {
950 err = got_error(GOT_ERR_IO);
955 free(packidx.hdr.magic);
956 free(packidx.hdr.version);
957 free(packidx.hdr.fanout_table);
958 free(packidx.hdr.sorted_ids);
959 free(packidx.hdr.offsets);
960 free(packidx.hdr.large_offsets);