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block/vdi: Check for bad signature 

vdi_open did not check for a bad signature.
This check was only in vdi_probe.

Signed-off-by: Stefan Weil <sw@weilnetz.de>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Stefan Weil 2013-01-17 21:45:28 +01:00 committed by Kevin Wolf
parent 8937f8222c
commit 0e87ba2ccb
1 changed files with 5 additions and 1 deletions
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6
block/vdi.c
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@ -392,7 +392,11 @@ static int vdi_open(BlockDriverState *bs, int flags)
header.disk_size &= ~(SECTOR_SIZE - 1);
}
if (header.version != VDI_VERSION_1_1) {
if (header.signature != VDI_SIGNATURE) {
logout("bad vdi signature %08x\n", header.signature);
ret = -EMEDIUMTYPE;
goto fail;
} else if (header.version != VDI_VERSION_1_1) {
logout("unsupported version %u.%u\n",
header.version >> 16, header.version & 0xffff);
ret = -ENOTSUP;