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authorJes Sorensen <Jes.Sorensen@redhat.com>2010-05-27 16:20:30 +0200
committerKevin Wolf <kwolf@redhat.com>2010-06-04 11:43:39 +0200
commit3e82990b52d5afeb4957dd9b87be83d752e369b9 (patch)
treeba5c89885d52e6c2e240e21393c92f822d677c04 /block.c
parent358c360feb346dff8f911e2d1dbcdd6319393f1d (diff)
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Cleanup: bdrv_open() no need to shift total_size just to shift back.
In bdrv_open() there is no need to shift total_size >> 9 just to multiply it by 512 again just a few lines later, since this is the only place the variable is used. Mask with BDRV_SECTOR_MASK to protect against case where we are passed a corrupted image. Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'block.c')
-rw-r--r--block.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/block.c b/block.c
index 39724c1..8385b4f 100644
--- a/block.c
+++ b/block.c
@@ -522,7 +522,7 @@ int bdrv_open(BlockDriverState *bs, const char *filename, int flags,
bdrv_delete(bs1);
return ret;
}
- total_size = bdrv_getlength(bs1) >> BDRV_SECTOR_BITS;
+ total_size = bdrv_getlength(bs1) & BDRV_SECTOR_MASK;
if (bs1->drv && bs1->drv->protocol_name)
is_protocol = 1;
@@ -541,7 +541,7 @@ int bdrv_open(BlockDriverState *bs, const char *filename, int flags,
bdrv_qcow2 = bdrv_find_format("qcow2");
options = parse_option_parameters("", bdrv_qcow2->create_options, NULL);
- set_option_parameter_int(options, BLOCK_OPT_SIZE, total_size * 512);
+ set_option_parameter_int(options, BLOCK_OPT_SIZE, total_size);
set_option_parameter(options, BLOCK_OPT_BACKING_FILE, backing_filename);
if (drv) {
set_option_parameter(options, BLOCK_OPT_BACKING_FMT,