diff options
Diffstat (limited to 'pack-check.c')
| -rw-r--r-- | pack-check.c | 20 |
1 files changed, 15 insertions, 5 deletions
diff --git a/pack-check.c b/pack-check.c index c0caaee09..8e123b71e 100644 --- a/pack-check.c +++ b/pack-check.c @@ -1,16 +1,18 @@ #include "cache.h" #include "pack.h" +#define BATCH (1u<<20) + static int verify_packfile(struct packed_git *p) { unsigned long index_size = p->index_size; void *index_base = p->index_base; SHA_CTX ctx; unsigned char sha1[20]; - unsigned long pack_size = p->pack_size; - void *pack_base; struct pack_header *hdr; int nr_objects, err, i; + unsigned char *packdata; + unsigned long datasize; /* Header consistency check */ hdr = p->pack_base; @@ -25,11 +27,19 @@ static int verify_packfile(struct packed_git *p) "while idx size expects %d", nr_objects, num_packed_objects(p)); + /* Check integrity of pack data with its SHA-1 checksum */ SHA1_Init(&ctx); - pack_base = p->pack_base; - SHA1_Update(&ctx, pack_base, pack_size - 20); + packdata = p->pack_base; + datasize = p->pack_size - 20; + while (datasize) { + unsigned long batch = (datasize < BATCH) ? datasize : BATCH; + SHA1_Update(&ctx, packdata, batch); + datasize -= batch; + packdata += batch; + } SHA1_Final(sha1, &ctx); - if (hashcmp(sha1, (unsigned char *)pack_base + pack_size - 20)) + + if (hashcmp(sha1, (unsigned char *)(p->pack_base) + p->pack_size - 20)) return error("Packfile %s SHA1 mismatch with itself", p->pack_name); if (hashcmp(sha1, (unsigned char *)index_base + index_size - 40)) |