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block: Fix max nb_sectors in bdrv_make_zero 

In bdrv_rw_co we report -EINVAL for nb_sectors > INT_MAX /
BDRV_SECTOR_SIZE, so a caller shouldn't exceed it.

Signed-off-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Message-id: 1415603264-21497-1-git-send-email-famz@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Fam Zheng 2014-11-10 15:07:44 +08:00 committed by Stefan Hajnoczi
parent 107f0d4677
commit f3a9cfddae
1 changed files with 2 additions and 2 deletions
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4
block.c
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@ -2790,8 +2790,8 @@ int bdrv_make_zero(BlockDriverState *bs, BdrvRequestFlags flags)
if (nb_sectors <= 0) {
return 0;
}
if (nb_sectors > INT_MAX) {
nb_sectors = INT_MAX;
if (nb_sectors > INT_MAX / BDRV_SECTOR_SIZE) {
nb_sectors = INT_MAX / BDRV_SECTOR_SIZE;
}
ret = bdrv_get_block_status(bs, sector_num, nb_sectors, &n);
if (ret < 0) {