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[Qemu-block] [PULL 36/42] block: Allow node name for 'qemu-io' HMP comma
From: |
Kevin Wolf |
Subject: |
[Qemu-block] [PULL 36/42] block: Allow node name for 'qemu-io' HMP command |
Date: |
Mon, 5 Sep 2016 20:13:48 +0200 |
When using a node name, create a temporary BlockBackend that is used to
run the qemu-io command.
Signed-off-by: Kevin Wolf <address@hidden>
Reviewed-by: Eric Blake <address@hidden>
---
hmp.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/hmp.c b/hmp.c
index a7dfe6f..ad33b44 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);
}
--
1.8.3.1
- [Qemu-block] [PULL 29/42] qemu-iotests: add vmdk for test backup compression in 055, (continued)
- [Qemu-block] [PULL 29/42] qemu-iotests: add vmdk for test backup compression in 055, Kevin Wolf, 2016/09/05
- [Qemu-block] [PULL 26/42] drive-backup: added support for data compression, Kevin Wolf, 2016/09/05
- [Qemu-block] [PULL 27/42] blockdev-backup: added support for data compression, Kevin Wolf, 2016/09/05
- [Qemu-block] [PULL 30/42] test-coroutine: Fix coroutine pool corruption, Kevin Wolf, 2016/09/05
- [Qemu-block] [PULL 32/42] coroutine: Let CoMutex remember who holds it, Kevin Wolf, 2016/09/05
- [Qemu-block] [PULL 31/42] qcow2: fix iovec size at qcow2_co_pwritev_compressed, Kevin Wolf, 2016/09/05
- [Qemu-block] [PULL 34/42] block jobs: Improve error message for missing job ID, Kevin Wolf, 2016/09/05
- [Qemu-block] [PULL 35/42] qemu-iotests: Log QMP traffic in debug mode, Kevin Wolf, 2016/09/05
- [Qemu-block] [PULL 36/42] block: Allow node name for 'qemu-io' HMP command,
Kevin Wolf <=
- [Qemu-block] [PULL 38/42] coroutine: add a macro for the coroutine stack size, Kevin Wolf, 2016/09/05
- [Qemu-block] [PULL 37/42] oslib-posix: add helpers for stack alloc and free, Kevin Wolf, 2016/09/05
- [Qemu-block] [PULL 33/42] coroutine: Assert that no locks are held on termination, Kevin Wolf, 2016/09/05
- [Qemu-block] [PULL 40/42] coroutine-sigaltstack: use helper for allocating stack memory, Kevin Wolf, 2016/09/05
- [Qemu-block] [PULL 39/42] coroutine-ucontext: use helper for allocating stack memory, Kevin Wolf, 2016/09/05
- [Qemu-block] [PULL 41/42] oslib-posix: add a configure switch to debug stack usage, Kevin Wolf, 2016/09/05
- [Qemu-block] [PULL 42/42] coroutine: reduce stack size to 64kB, Kevin Wolf, 2016/09/05
- Re: [Qemu-block] [Qemu-devel] [PULL 00/42] Block layer patches, Peter Maydell, 2016/09/06