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| author | Kevin Wolf <kwolf@redhat.com> | 2013-09-13 15:51:47 +0200 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2013-10-11 16:50:01 +0200 |
| commit | 4f8a066b5fc254eeaabbbde56ba4f5b29cc68fdf (patch) | |
| tree | caca58e5bd84ca7eaf74ed97b128ca966c29ba98 /hw/block | |
| parent | 394c7d4d6bd06386308e2fef0cf1c613a10e0d23 (diff) | |
| download | qemu-4f8a066b5fc254eeaabbbde56ba4f5b29cc68fdf.zip qemu-4f8a066b5fc254eeaabbbde56ba4f5b29cc68fdf.tar.gz qemu-4f8a066b5fc254eeaabbbde56ba4f5b29cc68fdf.tar.bz2 | |
blockdev: Remove IF_* check for read-only blockdev_init
IF_NONE allows read-only, which makes forbidding it in this place
for other types pretty much pointless.
Instead, make sure that all devices for which the check would have
errored out check in their init function that they don't get a read-only
BlockDriverState. This catches even cases where IF_NONE and -device is
used.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Diffstat (limited to 'hw/block')
| -rw-r--r-- | hw/block/m25p80.c | 5 | ||||
| -rw-r--r-- | hw/block/xen_disk.c | 5 |
2 files changed, 10 insertions, 0 deletions
diff --git a/hw/block/m25p80.c b/hw/block/m25p80.c index 8c3b7f0..02a1544 100644 --- a/hw/block/m25p80.c +++ b/hw/block/m25p80.c @@ -624,6 +624,11 @@ static int m25p80_init(SSISlave *ss) if (dinfo && dinfo->bdrv) { DB_PRINT_L(0, "Binding to IF_MTD drive\n"); s->bdrv = dinfo->bdrv; + if (bdrv_is_read_only(s->bdrv)) { + fprintf(stderr, "Can't use a read-only drive"); + return 1; + } + /* FIXME: Move to late init */ if (bdrv_read(s->bdrv, 0, s->storage, DIV_ROUND_UP(s->size, BDRV_SECTOR_SIZE))) { diff --git a/hw/block/xen_disk.c b/hw/block/xen_disk.c index 8742294..098f6c6 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); |