diff options
Diffstat (limited to 'hw/block/xen_disk.c')
| -rw-r--r-- | hw/block/xen_disk.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/hw/block/xen_disk.c b/hw/block/xen_disk.c index 8742294dfb..098f6c62c7 100644 --- a/hw/block/xen_disk.c +++ b/hw/block/xen_disk.c @@ -830,6 +830,11 @@ static int blk_connect(struct XenDevice *xendev) /* setup via qemu cmdline -> already setup for us */ xen_be_printf(&blkdev->xendev, 2, "get configured bdrv (cmdline setup)\n"); blkdev->bs = blkdev->dinfo->bdrv; + if (bdrv_is_read_only(blkdev->bs) && !readonly) { + xen_be_printf(&blkdev->xendev, 0, "Unexpected read-only drive"); + blkdev->bs = NULL; + return -1; + } /* blkdev->bs is not create by us, we get a reference * so we can bdrv_unref() unconditionally */ bdrv_ref(blkdev->bs); |