mirror of
https://github.com/qemu/qemu.git
synced 2024-12-28 14:43:49 +08:00
efaa7c4eeb
Before this patch, blk_new() automatically assigned a name to the new BlockBackend and considered it referenced by the monitor. This patch removes the implicit monitor_add_blk() call from blk_new() (and consequently the monitor_remove_blk() call from blk_delete(), too) and thus blk_new() (and related functions) no longer take a BB name argument. In fact, there is only a single point where blk_new()/blk_new_open() is called and the new BB is monitor-owned, and that is in blockdev_init(). Besides thus relieving us from having to invent names for all of the BBs we use in qemu-img, this fixes a bug where qemu cannot create a new image if there already is a monitor-owned BB named "image". If a BB and its BDS tree are created in a single operation, as of this patch the BDS tree will be created before the BB is given a name (whereas it was the other way around before). This results in minor change to the output of iotest 087, whose reference output is amended accordingly. Signed-off-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
92 lines
2.6 KiB
C
92 lines
2.6 KiB
C
/*
|
|
* QEMU device hotplug helpers
|
|
*
|
|
* Copyright (c) 2004 Fabrice Bellard
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
* of this software and associated documentation files (the "Software"), to deal
|
|
* in the Software without restriction, including without limitation the rights
|
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
* copies of the Software, and to permit persons to whom the Software is
|
|
* furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in
|
|
* all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
|
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
* THE SOFTWARE.
|
|
*/
|
|
|
|
#include "qemu/osdep.h"
|
|
#include "hw/hw.h"
|
|
#include "hw/boards.h"
|
|
#include "sysemu/block-backend.h"
|
|
#include "sysemu/blockdev.h"
|
|
#include "qemu/config-file.h"
|
|
#include "sysemu/sysemu.h"
|
|
#include "monitor/monitor.h"
|
|
#include "block/block_int.h"
|
|
|
|
static DriveInfo *add_init_drive(const char *optstr)
|
|
{
|
|
DriveInfo *dinfo;
|
|
QemuOpts *opts;
|
|
MachineClass *mc;
|
|
|
|
opts = drive_def(optstr);
|
|
if (!opts)
|
|
return NULL;
|
|
|
|
mc = MACHINE_GET_CLASS(current_machine);
|
|
dinfo = drive_new(opts, mc->block_default_type);
|
|
if (!dinfo) {
|
|
qemu_opts_del(opts);
|
|
return NULL;
|
|
}
|
|
|
|
return dinfo;
|
|
}
|
|
|
|
void hmp_drive_add(Monitor *mon, const QDict *qdict)
|
|
{
|
|
DriveInfo *dinfo = NULL;
|
|
const char *opts = qdict_get_str(qdict, "opts");
|
|
bool node = qdict_get_try_bool(qdict, "node", false);
|
|
|
|
if (node) {
|
|
hmp_drive_add_node(mon, opts);
|
|
return;
|
|
}
|
|
|
|
dinfo = add_init_drive(opts);
|
|
if (!dinfo) {
|
|
goto err;
|
|
}
|
|
if (dinfo->devaddr) {
|
|
monitor_printf(mon, "Parameter addr not supported\n");
|
|
goto err;
|
|
}
|
|
|
|
switch (dinfo->type) {
|
|
case IF_NONE:
|
|
monitor_printf(mon, "OK\n");
|
|
break;
|
|
default:
|
|
monitor_printf(mon, "Can't hot-add drive to type %d\n", dinfo->type);
|
|
goto err;
|
|
}
|
|
return;
|
|
|
|
err:
|
|
if (dinfo) {
|
|
BlockBackend *blk = blk_by_legacy_dinfo(dinfo);
|
|
monitor_remove_blk(blk);
|
|
blk_unref(blk);
|
|
}
|
|
}
|