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
/*
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* QEMU device hotplug helpers
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*
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* Copyright (c) 2004 Fabrice Bellard
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "qemu/osdep.h"
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#include "hw/hw.h"
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#include "hw/boards.h"
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#include "sysemu/block-backend.h"
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#include "sysemu/blockdev.h"
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#include "qemu/config-file.h"
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#include "sysemu/sysemu.h"
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#include "monitor/monitor.h"
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#include "block/block_int.h"
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static DriveInfo *add_init_drive(const char *optstr)
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{
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DriveInfo *dinfo;
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QemuOpts *opts;
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MachineClass *mc;
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opts = drive_def(optstr);
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if (!opts)
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return NULL;
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mc = MACHINE_GET_CLASS(current_machine);
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dinfo = drive_new(opts, mc->block_default_type);
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if (!dinfo) {
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qemu_opts_del(opts);
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return NULL;
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}
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return dinfo;
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}
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void hmp_drive_add(Monitor *mon, const QDict *qdict)
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{
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DriveInfo *dinfo = NULL;
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const char *opts = qdict_get_str(qdict, "opts");
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bool node = qdict_get_try_bool(qdict, "node", false);
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if (node) {
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hmp_drive_add_node(mon, opts);
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return;
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}
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dinfo = add_init_drive(opts);
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if (!dinfo) {
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goto err;
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}
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if (dinfo->devaddr) {
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monitor_printf(mon, "Parameter addr not supported\n");
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goto err;
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}
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switch (dinfo->type) {
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case IF_NONE:
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monitor_printf(mon, "OK\n");
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break;
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default:
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monitor_printf(mon, "Can't hot-add drive to type %d\n", dinfo->type);
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goto err;
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}
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return;
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err:
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if (dinfo) {
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BlockBackend *blk = blk_by_legacy_dinfo(dinfo);
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monitor_remove_blk(blk);
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blk_unref(blk);
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}
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}
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