Commit e7f98f2f authored by Kevin Wolf's avatar Kevin Wolf
Browse files

block: Allow node name for 'qemu-io' HMP command 



When using a node name, create a temporary BlockBackend that is used to
run the qemu-io command.

Signed-off-by: default avatarKevin Wolf <kwolf@redhat.com>
Reviewed-by: default avatarEric Blake <eblake@redhat.com>
parent c0088d79

hmp.c

+13 −0
Original line number Diff line number Diff line
@@ -1923,11 +1923,22 @@ void hmp_chardev_remove(Monitor *mon, const QDict *qdict) 
void hmp_qemu_io(Monitor *mon, const QDict *qdict)

{

    BlockBackend *blk;

    BlockBackend *local_blk = NULL;

    const char* device = qdict_get_str(qdict, "device");

    const char* command = qdict_get_str(qdict, "command");

    Error *err = NULL;



    blk = blk_by_name(device);

    if (!blk) {

        BlockDriverState *bs = bdrv_lookup_bs(NULL, device, &err);

        if (bs) {

            blk = local_blk = blk_new();

            blk_insert_bs(blk, bs);

        } else {

            goto fail;

        }

    }



    if (blk) {

        AioContext *aio_context = blk_get_aio_context(blk);

        aio_context_acquire(aio_context);
@@ -1940,6 +1951,8 @@ void hmp_qemu_io(Monitor *mon, const QDict *qdict) 
                  "Device '%s' not found", device);

    }



fail:

    blk_unref(local_blk);

    hmp_handle_error(mon, &err);

}