hmp_snapshot_blkdev is from GPLv2 version of the hmp-cmds.c thus have to change the licence to GPLv2 Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Message-Id: <20200308092440.23564-8-mlevitsk@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
356 lines
10 KiB
C
356 lines
10 KiB
C
/*
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* Blockdev HMP commands
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*
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* Authors:
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* Anthony Liguori <aliguori@us.ibm.com>
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*
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* Copyright (c) 2003-2008 Fabrice Bellard
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*
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* This work is licensed under the terms of the GNU GPL, version 2.
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* See the COPYING file in the top-level directory.
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* Contributions after 2012-01-13 are licensed under the terms of the
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* GNU GPL, version 2 or (at your option) any later version.
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*
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* This file incorporates work covered by the following copyright and
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* permission notice:
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*
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* Copyright (c) 2003-2008 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/boards.h"
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#include "sysemu/block-backend.h"
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#include "sysemu/blockdev.h"
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#include "qapi/qapi-commands-block.h"
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#include "qapi/qmp/qdict.h"
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#include "qapi/error.h"
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#include "qapi/qmp/qerror.h"
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#include "qemu/config-file.h"
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#include "qemu/option.h"
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#include "sysemu/sysemu.h"
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#include "monitor/monitor.h"
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#include "monitor/hmp.h"
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#include "block/block_int.h"
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#include "block/block-hmp-cmds.h"
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void hmp_drive_add(Monitor *mon, const QDict *qdict)
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{
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Error *err = NULL;
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DriveInfo *dinfo;
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QemuOpts *opts;
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MachineClass *mc;
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const char *optstr = 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, optstr);
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return;
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}
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opts = drive_def(optstr);
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if (!opts)
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return;
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mc = MACHINE_GET_CLASS(current_machine);
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dinfo = drive_new(opts, mc->block_default_type, &err);
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if (err) {
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error_report_err(err);
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qemu_opts_del(opts);
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goto err;
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}
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if (!dinfo) {
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return;
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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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void hmp_drive_del(Monitor *mon, const QDict *qdict)
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{
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const char *id = qdict_get_str(qdict, "id");
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BlockBackend *blk;
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BlockDriverState *bs;
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AioContext *aio_context;
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Error *local_err = NULL;
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bs = bdrv_find_node(id);
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if (bs) {
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qmp_blockdev_del(id, &local_err);
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if (local_err) {
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error_report_err(local_err);
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}
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return;
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}
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blk = blk_by_name(id);
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if (!blk) {
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error_report("Device '%s' not found", id);
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return;
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}
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if (!blk_legacy_dinfo(blk)) {
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error_report("Deleting device added with blockdev-add"
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" is not supported");
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return;
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}
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aio_context = blk_get_aio_context(blk);
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aio_context_acquire(aio_context);
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bs = blk_bs(blk);
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if (bs) {
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if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_DRIVE_DEL, &local_err)) {
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error_report_err(local_err);
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aio_context_release(aio_context);
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return;
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}
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blk_remove_bs(blk);
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}
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/* Make the BlockBackend and the attached BlockDriverState anonymous */
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monitor_remove_blk(blk);
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/*
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* If this BlockBackend has a device attached to it, its refcount will be
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* decremented when the device is removed; otherwise we have to do so here.
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*/
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if (blk_get_attached_dev(blk)) {
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/* Further I/O must not pause the guest */
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blk_set_on_error(blk, BLOCKDEV_ON_ERROR_REPORT,
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BLOCKDEV_ON_ERROR_REPORT);
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} else {
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blk_unref(blk);
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}
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aio_context_release(aio_context);
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}
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void hmp_commit(Monitor *mon, const QDict *qdict)
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{
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const char *device = qdict_get_str(qdict, "device");
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BlockBackend *blk;
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int ret;
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if (!strcmp(device, "all")) {
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ret = blk_commit_all();
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} else {
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BlockDriverState *bs;
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AioContext *aio_context;
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blk = blk_by_name(device);
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if (!blk) {
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error_report("Device '%s' not found", device);
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return;
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}
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if (!blk_is_available(blk)) {
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error_report("Device '%s' has no medium", device);
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return;
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}
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bs = blk_bs(blk);
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aio_context = bdrv_get_aio_context(bs);
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aio_context_acquire(aio_context);
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ret = bdrv_commit(bs);
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aio_context_release(aio_context);
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}
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if (ret < 0) {
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error_report("'commit' error for '%s': %s", device, strerror(-ret));
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}
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}
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void hmp_drive_mirror(Monitor *mon, const QDict *qdict)
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{
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const char *filename = qdict_get_str(qdict, "target");
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const char *format = qdict_get_try_str(qdict, "format");
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bool reuse = qdict_get_try_bool(qdict, "reuse", false);
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bool full = qdict_get_try_bool(qdict, "full", false);
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Error *err = NULL;
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DriveMirror mirror = {
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.device = (char *)qdict_get_str(qdict, "device"),
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.target = (char *)filename,
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.has_format = !!format,
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.format = (char *)format,
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.sync = full ? MIRROR_SYNC_MODE_FULL : MIRROR_SYNC_MODE_TOP,
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.has_mode = true,
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.mode = reuse ? NEW_IMAGE_MODE_EXISTING : NEW_IMAGE_MODE_ABSOLUTE_PATHS,
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.unmap = true,
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};
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if (!filename) {
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error_setg(&err, QERR_MISSING_PARAMETER, "target");
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hmp_handle_error(mon, err);
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return;
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}
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qmp_drive_mirror(&mirror, &err);
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hmp_handle_error(mon, err);
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}
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void hmp_drive_backup(Monitor *mon, const QDict *qdict)
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{
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const char *device = qdict_get_str(qdict, "device");
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const char *filename = qdict_get_str(qdict, "target");
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const char *format = qdict_get_try_str(qdict, "format");
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bool reuse = qdict_get_try_bool(qdict, "reuse", false);
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bool full = qdict_get_try_bool(qdict, "full", false);
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bool compress = qdict_get_try_bool(qdict, "compress", false);
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Error *err = NULL;
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DriveBackup backup = {
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.device = (char *)device,
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.target = (char *)filename,
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.has_format = !!format,
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.format = (char *)format,
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.sync = full ? MIRROR_SYNC_MODE_FULL : MIRROR_SYNC_MODE_TOP,
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.has_mode = true,
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.mode = reuse ? NEW_IMAGE_MODE_EXISTING : NEW_IMAGE_MODE_ABSOLUTE_PATHS,
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.has_compress = !!compress,
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.compress = compress,
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};
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if (!filename) {
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error_setg(&err, QERR_MISSING_PARAMETER, "target");
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hmp_handle_error(mon, err);
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return;
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}
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qmp_drive_backup(&backup, &err);
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hmp_handle_error(mon, err);
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}
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void hmp_block_job_set_speed(Monitor *mon, const QDict *qdict)
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{
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Error *error = NULL;
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const char *device = qdict_get_str(qdict, "device");
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int64_t value = qdict_get_int(qdict, "speed");
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qmp_block_job_set_speed(device, value, &error);
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hmp_handle_error(mon, error);
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}
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void hmp_block_job_cancel(Monitor *mon, const QDict *qdict)
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{
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Error *error = NULL;
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const char *device = qdict_get_str(qdict, "device");
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bool force = qdict_get_try_bool(qdict, "force", false);
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qmp_block_job_cancel(device, true, force, &error);
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hmp_handle_error(mon, error);
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}
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void hmp_block_job_pause(Monitor *mon, const QDict *qdict)
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{
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Error *error = NULL;
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const char *device = qdict_get_str(qdict, "device");
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qmp_block_job_pause(device, &error);
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hmp_handle_error(mon, error);
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}
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void hmp_block_job_resume(Monitor *mon, const QDict *qdict)
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{
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Error *error = NULL;
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const char *device = qdict_get_str(qdict, "device");
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qmp_block_job_resume(device, &error);
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hmp_handle_error(mon, error);
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}
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void hmp_block_job_complete(Monitor *mon, const QDict *qdict)
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{
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Error *error = NULL;
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const char *device = qdict_get_str(qdict, "device");
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qmp_block_job_complete(device, &error);
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hmp_handle_error(mon, error);
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}
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void hmp_snapshot_blkdev(Monitor *mon, const QDict *qdict)
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{
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const char *device = qdict_get_str(qdict, "device");
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const char *filename = qdict_get_try_str(qdict, "snapshot-file");
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const char *format = qdict_get_try_str(qdict, "format");
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bool reuse = qdict_get_try_bool(qdict, "reuse", false);
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enum NewImageMode mode;
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Error *err = NULL;
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if (!filename) {
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/*
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* In the future, if 'snapshot-file' is not specified, the snapshot
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* will be taken internally. Today it's actually required.
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*/
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error_setg(&err, QERR_MISSING_PARAMETER, "snapshot-file");
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hmp_handle_error(mon, err);
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return;
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}
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mode = reuse ? NEW_IMAGE_MODE_EXISTING : NEW_IMAGE_MODE_ABSOLUTE_PATHS;
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qmp_blockdev_snapshot_sync(true, device, false, NULL,
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filename, false, NULL,
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!!format, format,
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true, mode, &err);
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hmp_handle_error(mon, err);
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}
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void hmp_snapshot_blkdev_internal(Monitor *mon, const QDict *qdict)
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{
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const char *device = qdict_get_str(qdict, "device");
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const char *name = qdict_get_str(qdict, "name");
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Error *err = NULL;
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qmp_blockdev_snapshot_internal_sync(device, name, &err);
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hmp_handle_error(mon, err);
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}
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void hmp_snapshot_delete_blkdev_internal(Monitor *mon, const QDict *qdict)
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{
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const char *device = qdict_get_str(qdict, "device");
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const char *name = qdict_get_str(qdict, "name");
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const char *id = qdict_get_try_str(qdict, "id");
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Error *err = NULL;
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qmp_blockdev_snapshot_delete_internal_sync(device, !!id, id,
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true, name, &err);
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hmp_handle_error(mon, err);
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}
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