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virtio-blk: Fix virtio-blk-s390 to require drive 

Move the check from virtio_blk_init_pci(), where it protects only
virtio-blk-pci, to virtio_blk_init().  Without that, virtio-blk-s390
initializes without a drive.  I figure that can lead to null pointer
dereferences.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Markus Armbruster 2010-07-06 14:37:43 +02:00 committed by Kevin Wolf
parent ac0c14d71b
commit d75d25e34e
2 changed files with 6 additions and 4 deletions
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6
hw/virtio-blk.c
View File

@ -12,6 +12,7 @@
*/
#include <qemu-common.h>
#include "qemu-error.h"
#include "virtio-blk.h"
#ifdef __linux__
# include <scsi/sg.h>
@ -490,6 +491,11 @@ VirtIODevice *virtio_blk_init(DeviceState *dev, BlockConf *conf)
static int virtio_blk_id;
DriveInfo *dinfo;
if (!conf->bs) {
error_report("virtio-blk-pci: drive property not set");
return NULL;
}
s = (VirtIOBlock *)virtio_common_init("virtio-blk", VIRTIO_ID_BLOCK,
sizeof(struct virtio_blk_config),
sizeof(VirtIOBlock));

4
hw/virtio-pci.c
View File

@ -546,10 +546,6 @@ static int virtio_blk_init_pci(PCIDevice *pci_dev)
proxy->class_code != PCI_CLASS_STORAGE_OTHER)
proxy->class_code = PCI_CLASS_STORAGE_SCSI;
if (!proxy->block.bs) {
error_report("virtio-blk-pci: drive property not set");
return -1;
}
vdev = virtio_blk_init(&pci_dev->qdev, &proxy->block);
if (!vdev) {
return -1;