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 "got_compat.h"
20 #include <sys/queue.h>
23 #include <sys/types.h>
43 #include "got_error.h"
44 #include "got_object.h"
46 #include "got_lib_hash.h"
47 #include "got_lib_delta.h"
48 #include "got_lib_inflate.h"
49 #include "got_lib_object.h"
50 #include "got_lib_object_parse.h"
51 #include "got_lib_object_idset.h"
52 #include "got_lib_privsep.h"
53 #include "got_lib_pack.h"
54 #include "got_lib_ratelimit.h"
55 #include "got_lib_pack_index.h"
56 #include "got_lib_delta_cache.h"
58 struct got_indexed_object {
59 struct got_object_id id;
62 * Has this object been fully resolved?
63 * If so, we know its ID, otherwise we don't and 'id' is invalid.
67 /* Offset of type+size field for this object in pack file. */
70 /* Type+size values parsed from pack file. */
74 /* Length of on-disk type+size data. */
77 /* Length of object data following type+size. */
85 struct got_object_id ref_id;
88 /* For offset deltas. */
90 size_t base_offsetlen;
96 putbe32(char *b, uint32_t n)
104 static const struct got_error *
105 read_checksum(uint32_t *crc, struct got_hash *ctx, int fd, size_t len)
111 for (n = len; n > 0; n -= r){
112 r = read(fd, buf, n > sizeof(buf) ? sizeof(buf) : n);
114 return got_error_from_errno("read");
118 *crc = crc32(*crc, buf, r);
120 got_hash_update(ctx, buf, r);
126 static const struct got_error *
127 read_file_digest(struct got_hash *ctx, FILE *f, size_t len)
132 for (n = len; n > 0; n -= r) {
133 r = fread(buf, 1, n > sizeof(buf) ? sizeof(buf) : n, f);
137 return got_ferror(f, GOT_ERR_IO);
139 got_hash_update(ctx, buf, r);
145 static const struct got_error *
146 read_packed_object(struct got_pack *pack, struct got_indexed_object *obj,
147 FILE *tmpfile, struct got_hash *pack_sha1_ctx)
149 const struct got_error *err = NULL;
151 uint8_t *data = NULL;
156 const char *obj_label;
157 size_t mapoff = obj->off;
158 struct got_inflate_checksum csum;
160 memset(&csum, 0, sizeof(csum));
161 csum.input_ctx = pack_sha1_ctx;
162 csum.input_crc = &obj->crc;
164 err = got_pack_parse_object_type_and_size(&obj->type, &obj->size,
165 &obj->tslen, pack, obj->off);
170 obj->crc = crc32(obj->crc, pack->map + mapoff, obj->tslen);
171 got_hash_update(pack_sha1_ctx, pack->map + mapoff, obj->tslen);
172 mapoff += obj->tslen;
174 /* XXX Seek back and get the CRC of on-disk type+size bytes. */
175 if (lseek(pack->fd, obj->off, SEEK_SET) == -1)
176 return got_error_from_errno("lseek");
177 err = read_checksum(&obj->crc, pack_sha1_ctx,
178 pack->fd, obj->tslen);
184 case GOT_OBJ_TYPE_BLOB:
185 case GOT_OBJ_TYPE_COMMIT:
186 case GOT_OBJ_TYPE_TREE:
187 case GOT_OBJ_TYPE_TAG:
188 if (obj->size > GOT_DELTA_RESULT_SIZE_CACHED_MAX) {
189 if (fseek(tmpfile, 0L, SEEK_SET) == -1) {
190 err = got_error_from_errno("fseek");
194 err = got_inflate_to_file_mmap(&datalen,
195 &obj->len, &csum, pack->map, mapoff,
196 pack->filesize - mapoff, tmpfile);
198 err = got_inflate_to_file_fd(&datalen,
199 &obj->len, &csum, pack->fd, tmpfile);
203 err = got_inflate_to_mem_mmap(&data, &datalen,
204 &obj->len, &csum, pack->map, mapoff,
205 pack->filesize - mapoff);
207 err = got_inflate_to_mem_fd(&data, &datalen,
208 &obj->len, &csum, obj->size, pack->fd);
213 got_hash_init(&ctx, GOT_HASH_SHA1);
214 err = got_object_type_label(&obj_label, obj->type);
219 if (asprintf(&header, "%s %lld", obj_label,
220 (long long)obj->size) == -1) {
221 err = got_error_from_errno("asprintf");
225 headerlen = strlen(header) + 1;
226 got_hash_update(&ctx, header, headerlen);
227 if (obj->size > GOT_DELTA_RESULT_SIZE_CACHED_MAX) {
228 err = read_file_digest(&ctx, tmpfile, datalen);
235 got_hash_update(&ctx, data, datalen);
236 got_hash_final_object_id(&ctx, &obj->id);
240 case GOT_OBJ_TYPE_REF_DELTA:
241 memset(obj->id.sha1, 0xff, SHA1_DIGEST_LENGTH);
243 if (mapoff + SHA1_DIGEST_LENGTH >= pack->filesize) {
244 err = got_error(GOT_ERR_BAD_PACKFILE);
247 if (mapoff + SHA1_DIGEST_LENGTH > SIZE_MAX) {
248 err = got_error_fmt(GOT_ERR_RANGE,
249 "mapoff %lld would overflow size_t",
250 (long long)mapoff + SHA1_DIGEST_LENGTH);
253 memcpy(obj->delta.ref.ref_id.sha1, pack->map + mapoff,
255 obj->crc = crc32(obj->crc, pack->map + mapoff,
257 got_hash_update(pack_sha1_ctx, pack->map + mapoff,
259 mapoff += SHA1_DIGEST_LENGTH;
260 err = got_inflate_to_mem_mmap(NULL, &datalen,
261 &obj->len, &csum, pack->map, mapoff,
262 pack->filesize - mapoff);
266 n = read(pack->fd, obj->delta.ref.ref_id.sha1,
269 err = got_error_from_errno("read");
272 if (n < sizeof(obj->id)) {
273 err = got_error(GOT_ERR_BAD_PACKFILE);
276 obj->crc = crc32(obj->crc, obj->delta.ref.ref_id.sha1,
278 got_hash_update(pack_sha1_ctx,
279 obj->delta.ref.ref_id.sha1, SHA1_DIGEST_LENGTH);
280 err = got_inflate_to_mem_fd(NULL, &datalen, &obj->len,
281 &csum, obj->size, pack->fd);
285 obj->len += SHA1_DIGEST_LENGTH;
287 case GOT_OBJ_TYPE_OFFSET_DELTA:
288 memset(obj->id.sha1, 0xff, SHA1_DIGEST_LENGTH);
289 err = got_pack_parse_offset_delta(&obj->delta.ofs.base_offset,
290 &obj->delta.ofs.base_offsetlen, pack, obj->off,
296 if (mapoff + obj->delta.ofs.base_offsetlen >=
298 err = got_error(GOT_ERR_BAD_PACKFILE);
302 if (mapoff + obj->delta.ofs.base_offsetlen >
304 err = got_error_fmt(GOT_ERR_RANGE,
305 "mapoff %lld would overflow size_t",
307 + obj->delta.ofs.base_offsetlen);
310 obj->crc = crc32(obj->crc, pack->map + mapoff,
311 obj->delta.ofs.base_offsetlen);
312 got_hash_update(pack_sha1_ctx, pack->map + mapoff,
313 obj->delta.ofs.base_offsetlen);
314 mapoff += obj->delta.ofs.base_offsetlen;
315 err = got_inflate_to_mem_mmap(NULL, &datalen,
316 &obj->len, &csum, pack->map, mapoff,
317 pack->filesize - mapoff);
322 * XXX Seek back and get CRC and SHA1 of on-disk
325 if (lseek(pack->fd, obj->off + obj->tslen, SEEK_SET)
327 err = got_error_from_errno("lseek");
330 err = read_checksum(&obj->crc, pack_sha1_ctx,
331 pack->fd, obj->delta.ofs.base_offsetlen);
335 err = got_inflate_to_mem_fd(NULL, &datalen, &obj->len,
336 &csum, obj->size, pack->fd);
340 obj->len += obj->delta.ofs.base_offsetlen;
343 err = got_error(GOT_ERR_OBJ_TYPE);
350 const struct got_error *
351 got_pack_hwrite(int fd, void *buf, int len, struct got_hash *ctx)
355 got_hash_update(ctx, buf, len);
357 w = write(fd, buf, len);
359 return got_error_from_errno("write");
361 return got_error(GOT_ERR_IO);
366 static const struct got_error *
367 resolve_deltified_object(struct got_pack *pack, struct got_packidx *packidx,
368 struct got_indexed_object *obj, FILE *tmpfile, FILE *delta_base_file,
369 FILE *delta_accum_file)
371 const struct got_error *err = NULL;
372 struct got_delta_chain deltas;
373 struct got_delta *delta;
381 const char *obj_label;
384 STAILQ_INIT(&deltas.entries);
386 err = got_pack_resolve_delta_chain(&deltas, packidx, pack,
387 obj->off, obj->tslen, obj->type, obj->size,
388 GOT_DELTA_CHAIN_RECURSION_MAX);
392 err = got_pack_get_delta_chain_max_size(&max_size, &deltas, pack);
395 if (max_size > GOT_DELTA_RESULT_SIZE_CACHED_MAX) {
397 rewind(delta_base_file);
398 rewind(delta_accum_file);
399 err = got_pack_dump_delta_chain_to_file(&len, &deltas,
400 pack, tmpfile, delta_base_file, delta_accum_file);
404 err = got_pack_dump_delta_chain_to_mem(&buf, &len,
410 err = got_delta_chain_get_base_type(&base_obj_type, &deltas);
413 err = got_object_type_label(&obj_label, base_obj_type);
416 if (asprintf(&header, "%s %zd", obj_label, len) == -1) {
417 err = got_error_from_errno("asprintf");
420 headerlen = strlen(header) + 1;
421 got_hash_init(&ctx, GOT_HASH_SHA1);
422 got_hash_update(&ctx, header, headerlen);
423 if (max_size > GOT_DELTA_RESULT_SIZE_CACHED_MAX) {
424 err = read_file_digest(&ctx, tmpfile, len);
428 got_hash_update(&ctx, buf, len);
429 got_hash_final_object_id(&ctx, &obj->id);
433 while (!STAILQ_EMPTY(&deltas.entries)) {
434 delta = STAILQ_FIRST(&deltas.entries);
435 STAILQ_REMOVE_HEAD(&deltas.entries, entry);
441 /* Determine the slot in the pack index a given object ID should use. */
443 find_object_idx(struct got_packidx *packidx, uint8_t *sha1)
445 u_int8_t id0 = sha1[0];
446 uint32_t nindexed = be32toh(packidx->hdr.fanout_table[0xff]);
447 int left = 0, right = nindexed - 1;
451 left = be32toh(packidx->hdr.fanout_table[id0 - 1]);
453 while (left <= right) {
454 struct got_packidx_object_id *oid;
456 i = ((left + right) / 2);
457 oid = &packidx->hdr.sorted_ids[i];
459 cmp = memcmp(sha1, oid->sha1, SHA1_DIGEST_LENGTH);
461 return -1; /* object already indexed */
473 print_packidx(struct got_packidx *packidx)
475 uint32_t nindexed = be32toh(packidx->hdr.fanout_table[0xff]);
478 fprintf(stderr, "object IDs:\n");
479 for (i = 0; i < nindexed; i++) {
480 char hex[SHA1_DIGEST_STRING_LENGTH];
481 got_sha1_digest_to_str(packidx->hdr.sorted_ids[i].sha1,
483 fprintf(stderr, "%s\n", hex);
485 fprintf(stderr, "\n");
487 fprintf(stderr, "object offsets:\n");
488 for (i = 0; i < nindexed; i++) {
489 uint32_t offset = be32toh(packidx->hdr.offsets[i]);
490 if (offset & GOT_PACKIDX_OFFSET_VAL_IS_LARGE_IDX) {
491 int j = offset & GOT_PACKIDX_OFFSET_VAL_MASK;
492 fprintf(stderr, "%u -> %llu\n", offset,
493 be64toh(packidx->hdr.large_offsets[j]));
495 fprintf(stderr, "%u\n", offset);
497 fprintf(stderr, "\n");
499 fprintf(stderr, "fanout table:");
500 for (i = 0; i <= 0xff; i++)
501 fprintf(stderr, " %u", be32toh(packidx->hdr.fanout_table[i]));
502 fprintf(stderr, "\n");
507 add_indexed_object(struct got_packidx *packidx, uint32_t idx,
508 struct got_indexed_object *obj)
512 memcpy(packidx->hdr.sorted_ids[idx].sha1, obj->id.sha1,
514 packidx->hdr.crc32[idx] = htobe32(obj->crc);
515 if (obj->off < GOT_PACKIDX_OFFSET_VAL_IS_LARGE_IDX)
516 packidx->hdr.offsets[idx] = htobe32(obj->off);
518 packidx->hdr.offsets[idx] = htobe32(packidx->nlargeobj |
519 GOT_PACKIDX_OFFSET_VAL_IS_LARGE_IDX);
520 packidx->hdr.large_offsets[packidx->nlargeobj] =
522 packidx->nlargeobj++;
525 for (i = obj->id.sha1[0]; i <= 0xff; i++) {
526 uint32_t n = be32toh(packidx->hdr.fanout_table[i]);
527 packidx->hdr.fanout_table[i] = htobe32(n + 1);
532 indexed_obj_cmp(const void *pa, const void *pb)
534 struct got_indexed_object *a, *b;
536 a = (struct got_indexed_object *)pa;
537 b = (struct got_indexed_object *)pb;
538 return got_object_id_cmp(&a->id, &b->id);
542 make_packidx(struct got_packidx *packidx, uint32_t nobj,
543 struct got_indexed_object *objects)
545 struct got_indexed_object *obj;
549 qsort(objects, nobj, sizeof(struct got_indexed_object),
552 memset(packidx->hdr.fanout_table, 0,
553 GOT_PACKIDX_V2_FANOUT_TABLE_ITEMS * sizeof(uint32_t));
554 packidx->nlargeobj = 0;
556 for (i = 0; i < nobj; i++) {
559 add_indexed_object(packidx, idx++, obj);
564 update_packidx(struct got_packidx *packidx, uint32_t nobj,
565 struct got_indexed_object *obj)
568 uint32_t nindexed = be32toh(packidx->hdr.fanout_table[0xff]);
570 idx = find_object_idx(packidx, obj->id.sha1);
572 return; /* object already indexed */
574 memmove(&packidx->hdr.sorted_ids[idx + 1],
575 &packidx->hdr.sorted_ids[idx],
576 sizeof(struct got_packidx_object_id) * (nindexed - idx));
577 memmove(&packidx->hdr.offsets[idx + 1], &packidx->hdr.offsets[idx],
578 sizeof(uint32_t) * (nindexed - idx));
580 add_indexed_object(packidx, idx, obj);
583 static const struct got_error *
584 report_progress(uint32_t nobj_total, uint32_t nobj_indexed, uint32_t nobj_loose,
585 uint32_t nobj_resolved, struct got_ratelimit *rl,
586 got_pack_index_progress_cb progress_cb, void *progress_arg)
588 const struct got_error *err;
592 err = got_ratelimit_check(&elapsed, rl);
597 return progress_cb(progress_arg, nobj_total, nobj_indexed, nobj_loose,
601 const struct got_error *
602 got_pack_index(struct got_pack *pack, int idxfd, FILE *tmpfile,
603 FILE *delta_base_file, FILE *delta_accum_file, uint8_t *pack_sha1_expected,
604 got_pack_index_progress_cb progress_cb, void *progress_arg,
605 struct got_ratelimit *rl)
607 const struct got_error *err;
608 struct got_packfile_hdr hdr;
609 struct got_packidx packidx;
611 char pack_sha1[SHA1_DIGEST_LENGTH];
612 uint32_t nobj, nvalid, nloose, nresolved = 0, i;
613 struct got_indexed_object *objects = NULL, *obj;
615 uint8_t packidx_hash[SHA1_DIGEST_LENGTH];
617 int pass, have_ref_deltas = 0, first_delta_idx = -1;
619 int p_indexed = 0, last_p_indexed = -1;
620 int p_resolved = 0, last_p_resolved = -1;
622 /* Require that pack file header and SHA1 trailer are present. */
623 if (pack->filesize < sizeof(hdr) + SHA1_DIGEST_LENGTH)
624 return got_error_msg(GOT_ERR_BAD_PACKFILE,
628 memcpy(&hdr, pack->map, sizeof(hdr));
629 mapoff += sizeof(hdr);
631 r = read(pack->fd, &hdr, sizeof(hdr));
633 return got_error_from_errno("read");
635 return got_error_msg(GOT_ERR_BAD_PACKFILE,
639 if (hdr.signature != htobe32(GOT_PACKFILE_SIGNATURE))
640 return got_error_msg(GOT_ERR_BAD_PACKFILE,
641 "bad packfile signature");
642 if (hdr.version != htobe32(GOT_PACKFILE_VERSION))
643 return got_error_msg(GOT_ERR_BAD_PACKFILE,
644 "bad packfile version");
645 nobj = be32toh(hdr.nobjects);
647 return got_error_msg(GOT_ERR_BAD_PACKFILE,
648 "bad packfile with zero objects");
650 /* We compute the SHA1 of pack file contents and verify later on. */
651 got_hash_init(&ctx, GOT_HASH_SHA1);
652 got_hash_update(&ctx, &hdr, sizeof(hdr));
655 * Create an in-memory pack index which will grow as objects
656 * IDs in the pack file are discovered. Only fields used to
657 * read deltified objects will be needed by the pack.c library
658 * code, so setting up just a pack index header is sufficient.
660 memset(&packidx, 0, sizeof(packidx));
661 packidx.hdr.magic = malloc(sizeof(uint32_t));
662 if (packidx.hdr.magic == NULL)
663 return got_error_from_errno("malloc");
664 *packidx.hdr.magic = htobe32(GOT_PACKIDX_V2_MAGIC);
665 packidx.hdr.version = malloc(sizeof(uint32_t));
666 if (packidx.hdr.version == NULL) {
667 err = got_error_from_errno("malloc");
670 *packidx.hdr.version = htobe32(GOT_PACKIDX_VERSION);
671 packidx.hdr.fanout_table = calloc(GOT_PACKIDX_V2_FANOUT_TABLE_ITEMS,
673 if (packidx.hdr.fanout_table == NULL) {
674 err = got_error_from_errno("calloc");
677 packidx.hdr.sorted_ids = calloc(nobj,
678 sizeof(struct got_packidx_object_id));
679 if (packidx.hdr.sorted_ids == NULL) {
680 err = got_error_from_errno("calloc");
683 packidx.hdr.crc32 = calloc(nobj, sizeof(uint32_t));
684 if (packidx.hdr.crc32 == NULL) {
685 err = got_error_from_errno("calloc");
688 packidx.hdr.offsets = calloc(nobj, sizeof(uint32_t));
689 if (packidx.hdr.offsets == NULL) {
690 err = got_error_from_errno("calloc");
693 /* Large offsets table is empty for pack files < 2 GB. */
694 if (pack->filesize >= GOT_PACKIDX_OFFSET_VAL_IS_LARGE_IDX) {
695 packidx.hdr.large_offsets = calloc(nobj, sizeof(uint64_t));
696 if (packidx.hdr.large_offsets == NULL) {
697 err = got_error_from_errno("calloc");
704 objects = calloc(nobj, sizeof(struct got_indexed_object));
706 return got_error_from_errno("calloc");
709 * First pass: locate all objects and identify un-deltified objects.
711 * When this pass has completed we will know offset, type, size, and
712 * CRC information for all objects in this pack file. We won't know
713 * any of the actual object IDs of deltified objects yet since we
714 * will not yet attempt to combine deltas.
717 for (i = 0; i < nobj; i++) {
718 /* Don't send too many progress privsep messages. */
719 p_indexed = ((i + 1) * 100) / nobj;
720 if (p_indexed != last_p_indexed) {
721 err = report_progress(nobj, i + 1, nloose, 0,
722 rl, progress_cb, progress_arg);
725 last_p_indexed = p_indexed;
729 obj->crc = crc32(0L, NULL, 0);
731 /* Store offset to type+size information for this object. */
735 obj->off = lseek(pack->fd, 0, SEEK_CUR);
736 if (obj->off == -1) {
737 err = got_error_from_errno("lseek");
742 err = read_packed_object(pack, obj, tmpfile, &ctx);
747 mapoff += obj->tslen + obj->len;
749 if (lseek(pack->fd, obj->off + obj->tslen + obj->len,
751 err = got_error_from_errno("lseek");
756 if (obj->type == GOT_OBJ_TYPE_BLOB ||
757 obj->type == GOT_OBJ_TYPE_TREE ||
758 obj->type == GOT_OBJ_TYPE_COMMIT ||
759 obj->type == GOT_OBJ_TYPE_TAG) {
763 if (first_delta_idx == -1)
765 if (obj->type == GOT_OBJ_TYPE_REF_DELTA)
772 * Having done a full pass over the pack file and can now
773 * verify its checksum.
775 got_hash_final(&ctx, pack_sha1);
777 if (memcmp(pack_sha1_expected, pack_sha1, SHA1_DIGEST_LENGTH) != 0) {
778 err = got_error(GOT_ERR_PACKFILE_CSUM);
782 /* Verify the SHA1 checksum stored at the end of the pack file. */
784 if (pack->filesize > SIZE_MAX) {
785 err = got_error_fmt(GOT_ERR_RANGE,
786 "filesize %lld overflows size_t",
787 (long long)pack->filesize);
791 memcpy(pack_sha1_expected, pack->map +
792 pack->filesize - SHA1_DIGEST_LENGTH,
796 if (lseek(pack->fd, -SHA1_DIGEST_LENGTH, SEEK_END) == -1) {
797 err = got_error_from_errno("lseek");
800 n = read(pack->fd, pack_sha1_expected, SHA1_DIGEST_LENGTH);
802 err = got_error_from_errno("read");
805 if (n != SHA1_DIGEST_LENGTH) {
806 err = got_error(GOT_ERR_IO);
810 if (memcmp(pack_sha1, pack_sha1_expected, SHA1_DIGEST_LENGTH) != 0) {
811 err = got_error_msg(GOT_ERR_BAD_PACKFILE,
812 "bad checksum in pack file trailer");
816 if (first_delta_idx == -1)
819 /* In order to resolve ref deltas we need an in-progress pack index. */
821 make_packidx(&packidx, nobj, objects);
824 * Second pass: We can now resolve deltas to compute the IDs of
825 * objects which appear in deltified form. Because deltas can be
826 * chained this pass may require a couple of iterations until all
827 * IDs of deltified objects have been discovered.
830 while (nvalid != nobj) {
833 * This loop will only run once unless the pack file
834 * contains ref deltas which refer to objects located
835 * later in the pack file, which is unusual.
836 * Offset deltas can always be resolved in one pass
837 * unless the packfile is corrupt.
839 for (i = first_delta_idx; i < nobj; i++) {
841 if (obj->type != GOT_OBJ_TYPE_REF_DELTA &&
842 obj->type != GOT_OBJ_TYPE_OFFSET_DELTA)
848 if (pack->map == NULL && lseek(pack->fd,
849 obj->off + obj->tslen, SEEK_SET) == -1) {
850 err = got_error_from_errno("lseek");
854 err = resolve_deltified_object(pack, &packidx, obj,
855 tmpfile, delta_base_file, delta_accum_file);
857 if (err->code != GOT_ERR_NO_OBJ)
860 * We cannot resolve this object yet because
861 * a delta base is unknown. Try again later.
869 update_packidx(&packidx, nobj, obj);
870 /* Don't send too many progress privsep messages. */
871 p_resolved = ((nresolved + n) * 100) / nobj;
872 if (p_resolved != last_p_resolved) {
873 err = report_progress(nobj, nobj,
874 nloose, nresolved + n, rl,
875 progress_cb, progress_arg);
878 last_p_resolved = p_resolved;
882 if (pass++ > 3 && n == 0) {
883 err = got_error_msg(GOT_ERR_BAD_PACKFILE,
884 "could not resolve any of deltas; packfile could "
892 if (nloose + nresolved != nobj) {
894 snprintf(msg, sizeof(msg), "discovered only %d of %d objects",
895 nloose + nresolved, nobj);
896 err = got_error_msg(GOT_ERR_BAD_PACKFILE, msg);
900 err = report_progress(nobj, nobj, nloose, nresolved, NULL,
901 progress_cb, progress_arg);
905 make_packidx(&packidx, nobj, objects);
910 got_hash_init(&ctx, GOT_HASH_SHA1);
911 putbe32(buf, GOT_PACKIDX_V2_MAGIC);
912 putbe32(buf + 4, GOT_PACKIDX_VERSION);
913 err = got_pack_hwrite(idxfd, buf, 8, &ctx);
916 err = got_pack_hwrite(idxfd, packidx.hdr.fanout_table,
917 GOT_PACKIDX_V2_FANOUT_TABLE_ITEMS * sizeof(uint32_t), &ctx);
920 err = got_pack_hwrite(idxfd, packidx.hdr.sorted_ids,
921 nobj * SHA1_DIGEST_LENGTH, &ctx);
924 err = got_pack_hwrite(idxfd, packidx.hdr.crc32,
925 nobj * sizeof(uint32_t), &ctx);
928 err = got_pack_hwrite(idxfd, packidx.hdr.offsets,
929 nobj * sizeof(uint32_t), &ctx);
932 if (packidx.nlargeobj > 0) {
933 err = got_pack_hwrite(idxfd, packidx.hdr.large_offsets,
934 packidx.nlargeobj * sizeof(uint64_t), &ctx);
938 err = got_pack_hwrite(idxfd, pack_sha1, SHA1_DIGEST_LENGTH, &ctx);
942 got_hash_final(&ctx, packidx_hash);
943 w = write(idxfd, packidx_hash, sizeof(packidx_hash));
945 err = got_error_from_errno("write");
948 if (w != sizeof(packidx_hash)) {
949 err = got_error(GOT_ERR_IO);
954 free(packidx.hdr.magic);
955 free(packidx.hdr.version);
956 free(packidx.hdr.fanout_table);
957 free(packidx.hdr.sorted_ids);
958 free(packidx.hdr.offsets);
959 free(packidx.hdr.large_offsets);