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| author | David Rientjes <rientjes@google.com> | 2006-08-17 11:54:57 -0700 |
|---|---|---|
| committer | Junio C Hamano <junkio@cox.net> | 2006-08-17 14:23:53 -0700 |
| commit | a89fccd28197fa179828c8596791ff16e2268d20 (patch) | |
| tree | 4a6c2b256a986fc221c0e1d5fa7d910f3b31eee8 /index-pack.c | |
| parent | d4baf9eaf47ea1ba204f1ab5ecd22326913dd081 (diff) | |
| download | git-a89fccd28197fa179828c8596791ff16e2268d20.tar.gz git-a89fccd28197fa179828c8596791ff16e2268d20.tar.xz | |
Do not use memcmp(sha1_1, sha1_2, 20) with hardcoded length.
Introduces global inline:
hashcmp(const unsigned char *sha1, const unsigned char *sha2)
Uses memcmp for comparison and returns the result based on the length of
the hash name (a future runtime decision).
Acked-by: Alex Riesen <raa.lkml@gmail.com>
Signed-off-by: David Rientjes <rientjes@google.com>
Signed-off-by: Junio C Hamano <junkio@cox.net>
Diffstat (limited to 'index-pack.c')
| -rw-r--r-- | index-pack.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/index-pack.c b/index-pack.c index b20659c25..96ea68746 100644 --- a/index-pack.c +++ b/index-pack.c @@ -82,7 +82,7 @@ static void parse_pack_header(void) SHA1_Init(&ctx); SHA1_Update(&ctx, pack_base, pack_size - 20); SHA1_Final(sha1, &ctx); - if (memcmp(sha1, pack_base + pack_size - 20, 20)) + if (hashcmp(sha1, pack_base + pack_size - 20)) die("packfile '%s' SHA1 mismatch", pack_name); } @@ -189,7 +189,7 @@ static int find_delta(const unsigned char *base_sha1) struct delta_entry *delta = &deltas[next]; int cmp; - cmp = memcmp(base_sha1, delta->base_sha1, 20); + cmp = hashcmp(base_sha1, delta->base_sha1); if (!cmp) return next; if (cmp < 0) { @@ -210,9 +210,9 @@ static int find_deltas_based_on_sha1(const unsigned char *base_sha1, if (first < 0) return -1; - while (first > 0 && !memcmp(deltas[first-1].base_sha1, base_sha1, 20)) + while (first > 0 && !hashcmp(deltas[first - 1].base_sha1, base_sha1)) --first; - while (last < end && !memcmp(deltas[last+1].base_sha1, base_sha1, 20)) + while (last < end && !hashcmp(deltas[last + 1].base_sha1, base_sha1)) ++last; *first_index = first; *last_index = last; @@ -278,7 +278,7 @@ static int compare_delta_entry(const void *a, const void *b) { const struct delta_entry *delta_a = a; const struct delta_entry *delta_b = b; - return memcmp(delta_a->base_sha1, delta_b->base_sha1, 20); + return hashcmp(delta_a->base_sha1, delta_b->base_sha1); } static void parse_pack_objects(void) @@ -350,7 +350,7 @@ static int sha1_compare(const void *_a, const void *_b) { struct object_entry *a = *(struct object_entry **)_a; struct object_entry *b = *(struct object_entry **)_b; - return memcmp(a->sha1, b->sha1, 20); + return hashcmp(a->sha1, b->sha1); } static void write_index_file(const char *index_name, unsigned char *sha1) |