diff --git a/pack-check.c b/pack-check.c index 0f8ad2c00f..f4898732dd 100644 --- a/pack-check.c +++ b/pack-check.c @@ -25,10 +25,10 @@ static int verify_packfile(struct packed_git *p, off_t index_size = p->index_size; const unsigned char *index_base = p->index_data; SHA_CTX ctx; - unsigned char sha1[20]; - off_t offset = 0, pack_sig = p->pack_size - 20; + unsigned char sha1[20], *pack_sig; + off_t offset = 0, pack_sig_ofs = p->pack_size - 20; uint32_t nr_objects, i; - int err; + int err = 0; struct idx_entry *entries; /* Note that the pack header checks are actually performed by @@ -38,21 +38,22 @@ static int verify_packfile(struct packed_git *p, */ SHA1_Init(&ctx); - while (offset < pack_sig) { + while (offset < pack_sig_ofs) { unsigned int remaining; unsigned char *in = use_pack(p, w_curs, offset, &remaining); offset += remaining; - if (offset > pack_sig) - remaining -= (unsigned int)(offset - pack_sig); + if (offset > pack_sig_ofs) + remaining -= (unsigned int)(offset - pack_sig_ofs); SHA1_Update(&ctx, in, remaining); } SHA1_Final(sha1, &ctx); - if (hashcmp(sha1, use_pack(p, w_curs, pack_sig, NULL))) - return error("Packfile %s SHA1 mismatch with itself", - p->pack_name); - if (hashcmp(sha1, index_base + index_size - 40)) - return error("Packfile %s SHA1 mismatch with idx", - p->pack_name); + pack_sig = use_pack(p, w_curs, pack_sig_ofs, NULL); + if (hashcmp(sha1, pack_sig)) + err = error("%s SHA1 checksum mismatch", + p->pack_name); + if (hashcmp(index_base + index_size - 40, pack_sig)) + err = error("%s SHA1 does not match its inddex", + p->pack_name); unuse_pack(w_curs); /* Make sure everything reachable from idx is valid. Since we @@ -72,22 +73,23 @@ static int verify_packfile(struct packed_git *p, } qsort(entries, nr_objects, sizeof(*entries), compare_entries); - for (i = 0, err = 0; i < nr_objects; i++) { + for (i = 0; i < nr_objects; i++) { void *data; enum object_type type; unsigned long size; data = unpack_entry(p, entries[i].offset, &type, &size); if (!data) { - err = error("cannot unpack %s from %s", - sha1_to_hex(entries[i].sha1), p->pack_name); - continue; + err = error("cannot unpack %s from %s at offset %"PRIuMAX"", + sha1_to_hex(entries[i].sha1), p->pack_name, + (uintmax_t)entries[i].offset); + break; } if (check_sha1_signature(entries[i].sha1, data, size, typename(type))) { err = error("packed %s from %s is corrupt", sha1_to_hex(entries[i].sha1), p->pack_name); free(data); - continue; + break; } free(data); } @@ -158,31 +160,28 @@ int verify_pack(struct packed_git *p, int verbose) const unsigned char *index_base; SHA_CTX ctx; unsigned char sha1[20]; - int ret; + int err = 0; + struct pack_window *w_curs = NULL; if (open_pack_index(p)) return error("packfile %s index not opened", p->pack_name); index_size = p->index_size; index_base = p->index_data; - ret = 0; /* Verify SHA1 sum of the index file */ SHA1_Init(&ctx); SHA1_Update(&ctx, index_base, (unsigned int)(index_size - 20)); SHA1_Final(sha1, &ctx); if (hashcmp(sha1, index_base + index_size - 20)) - ret = error("Packfile index for %s SHA1 mismatch", + err = error("Packfile index for %s SHA1 mismatch", p->pack_name); - if (!ret) { - /* Verify pack file */ - struct pack_window *w_curs = NULL; - ret = verify_packfile(p, &w_curs); - unuse_pack(&w_curs); - } + /* Verify pack file */ + err |= verify_packfile(p, &w_curs); + unuse_pack(&w_curs); if (verbose) { - if (ret) + if (err) printf("%s: bad\n", p->pack_name); else { show_pack_info(p); @@ -190,5 +189,5 @@ int verify_pack(struct packed_git *p, int verbose) } } - return ret; + return err; }