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| author | Fam Zheng <famz@redhat.com> | 2015-02-17 17:55:53 +0800 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2015-03-10 14:01:45 +0100 |
| commit | a209f4615c6853a226e847810b6c607c71b6a046 (patch) | |
| tree | a7da8cb7d2d2a5997cdd757d537b4f8976185935 | |
| parent | 20a1f9d07125bead22efd1dc208b4d14ae1b2a21 (diff) | |
| download | focaccia-qemu-a209f4615c6853a226e847810b6c607c71b6a046.tar.gz focaccia-qemu-a209f4615c6853a226e847810b6c607c71b6a046.zip | |
virtio-blk: Check return value of blk_aio_ioctl
Since commit 1dc936aa84 (virtio-blk: Use blk_aio_ioctl) we silently lose the request if blk_aio_ioctl returns NULL (not implemented). Fix it by directly returning VIRTIO_BLK_S_UNSUPP as we used to do. Signed-off-by: Fam Zheng <famz@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> [ kwolf: Fixed build error on win32 ] Signed-off-by: Kevin Wolf <kwolf@redhat.com>
| -rw-r--r-- | hw/block/virtio-blk.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/hw/block/virtio-blk.c b/hw/block/virtio-blk.c index cb71772f95..3ad5fe44e2 100644 --- a/hw/block/virtio-blk.c +++ b/hw/block/virtio-blk.c @@ -201,6 +201,7 @@ static int virtio_blk_handle_scsi_req(VirtIOBlockReq *req) #ifdef __linux__ int i; VirtIOBlockIoctlReq *ioctl_req; + BlockAIOCB *acb; #endif /* @@ -278,8 +279,13 @@ static int virtio_blk_handle_scsi_req(VirtIOBlockReq *req) ioctl_req->hdr.sbp = elem->in_sg[elem->in_num - 3].iov_base; ioctl_req->hdr.mx_sb_len = elem->in_sg[elem->in_num - 3].iov_len; - blk_aio_ioctl(blk->blk, SG_IO, &ioctl_req->hdr, - virtio_blk_ioctl_complete, ioctl_req); + acb = blk_aio_ioctl(blk->blk, SG_IO, &ioctl_req->hdr, + virtio_blk_ioctl_complete, ioctl_req); + if (!acb) { + g_free(ioctl_req); + status = VIRTIO_BLK_S_UNSUPP; + goto fail; + } return -EINPROGRESS; #else abort(); |