From e7f98f2f92827df9944402d1613a4e32fe50215b Mon Sep 17 00:00:00 2001 From: Kevin Wolf Date: Wed, 13 Jul 2016 17:27:51 +0200 Subject: 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: Kevin Wolf Reviewed-by: Eric Blake --- hmp.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/hmp.c b/hmp.c index a7dfe6fa11..ad33b442d2 100644 --- a/hmp.c +++ b/hmp.c @@ -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); } -- cgit v1.2.3