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virtio-blk: Return UNSUPP for unknown request types 

Currently, all unknown requests are treated as VIRTIO_BLK_T_IN

Signed-off-by: Alexey Zaytsev <alexey.zaytsev@gmail.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Alexey Zaytsev 2012-12-13 09:03:43 +02:00 committed by Stefan Hajnoczi
parent 392808b49b
commit 9e72c45033
1 changed files with 5 additions and 1 deletions
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6
hw/virtio-blk.c
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@ -398,10 +398,14 @@ static void virtio_blk_handle_request(VirtIOBlockReq *req,
qemu_iovec_init_external(&req->qiov, &req->elem.out_sg[1],
req->elem.out_num - 1);
virtio_blk_handle_write(req, mrb);
} else {
} else if (type == VIRTIO_BLK_T_IN || type == VIRTIO_BLK_T_BARRIER) {
/* VIRTIO_BLK_T_IN is 0, so we can't just & it. */
qemu_iovec_init_external(&req->qiov, &req->elem.in_sg[0],
req->elem.in_num - 1);
virtio_blk_handle_read(req);
} else {
virtio_blk_req_complete(req, VIRTIO_BLK_S_UNSUPP);
g_free(req);
}
}