From ad622a256f0dd0be44ca17f58b3f5b43cedb4320 Mon Sep 17 00:00:00 2001 From: Derrick Stolee Date: Wed, 17 Jan 2018 14:08:23 -0500 Subject: packfile: use get_be64() for large offsets The pack-index version 2 format uses two 4-byte integers in network-byte order to represent one 8-byte value. The current implementation has several code clones for stitching these integers together. Use get_be64() to create an 8-byte integer from two 4-byte integers represented this way. Signed-off-by: Derrick Stolee Reviewed-by: Jeff King Signed-off-by: Junio C Hamano --- pack-revindex.c | 6 ++---- packfile.c | 3 +-- 2 files changed, 3 insertions(+), 6 deletions(-) diff --git a/pack-revindex.c b/pack-revindex.c index 1b7ebd8d7e..ff5f62c033 100644 --- a/pack-revindex.c +++ b/pack-revindex.c @@ -134,10 +134,8 @@ static void create_pack_revindex(struct packed_git *p) if (!(off & 0x80000000)) { p->revindex[i].offset = off; } else { - p->revindex[i].offset = - ((uint64_t)ntohl(*off_64++)) << 32; - p->revindex[i].offset |= - ntohl(*off_64++); + p->revindex[i].offset = get_be64(off_64); + off_64 += 2; } p->revindex[i].nr = i; } diff --git a/packfile.c b/packfile.c index 4a5fe7ab18..228ed0d59a 100644 --- a/packfile.c +++ b/packfile.c @@ -1702,8 +1702,7 @@ off_t nth_packed_object_offset(const struct packed_git *p, uint32_t n) return off; index += p->num_objects * 4 + (off & 0x7fffffff) * 8; check_pack_index_ptr(p, index); - return (((uint64_t)ntohl(*((uint32_t *)(index + 0)))) << 32) | - ntohl(*((uint32_t *)(index + 4))); + return get_be64(index); } } -- cgit v1.2.1