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verify-pack: check packed object CRC when using index version 2

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To do so, check_pack_crc() moved from builtin-pack-objects.c to
pack-check.c where it is more logical to share.

Signed-off-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Nicolas Pitre
2008-06-24 23:19:02 -04:00
committed by Junio C Hamano
parent 77d3ecee85
commit c41a4a9468
3 changed files with 38 additions and 25 deletions
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22
builtin-pack-objects.c
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@ -209,28 +209,6 @@ static int check_pack_inflate(struct packed_git *p,
stream.total_in == len) ? 0 : -1;
}
static int check_pack_crc(struct packed_git *p, struct pack_window **w_curs,
off_t offset, off_t len, unsigned int nr)
{
const uint32_t *index_crc;
uint32_t data_crc = crc32(0, Z_NULL, 0);
do {
unsigned int avail;
void *data = use_pack(p, w_curs, offset, &avail);
if (avail > len)
avail = len;
data_crc = crc32(data_crc, data, avail);
offset += avail;
len -= avail;
} while (len);
index_crc = p->index_data;
index_crc += 2 + 256 + p->num_objects * (20/4) + nr;
return data_crc != ntohl(*index_crc);
}
static void copy_pack_data(struct sha1file *f,
struct packed_git *p,
struct pack_window **w_curs,