From 9680caee0fa530726809bc72d44e127ae676e251 Mon Sep 17 00:00:00 2001 From: Kevin Wolf Date: Tue, 20 Sep 2016 13:38:42 +0200 Subject: qdev-monitor: Add blk_by_qdev_id() This finds the BlockBackend attached to the device model identified by its qdev ID. Signed-off-by: Kevin Wolf Reviewed-by: Eric Blake --- qdev-monitor.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) (limited to 'qdev-monitor.c') diff --git a/qdev-monitor.c b/qdev-monitor.c index bc0213f..4f78ecb 100644 --- a/qdev-monitor.c +++ b/qdev-monitor.c @@ -28,6 +28,7 @@ #include "qemu/config-file.h" #include "qemu/error-report.h" #include "qemu/help_option.h" +#include "sysemu/block-backend.h" /* * Aliases were a bad idea from the start. Let's keep them @@ -838,6 +839,23 @@ void qmp_device_del(const char *id, Error **errp) } } +BlockBackend *blk_by_qdev_id(const char *id, Error **errp) +{ + DeviceState *dev; + BlockBackend *blk; + + dev = find_device_state(id, errp); + if (dev == NULL) { + return NULL; + } + + blk = blk_by_dev(dev); + if (!blk) { + error_setg(errp, "Device does not have a block device backend"); + } + return blk; +} + void qdev_machine_init(void) { qdev_get_peripheral_anon(); -- cgit v1.1