LXR qemu/device-hotplug.c

   1/*
   2 * QEMU device hotplug helpers
   3 *
   4 * Copyright (c) 2004 Fabrice Bellard
   5 *
   6 * Permission is hereby granted, free of charge, to any person obtaining a copy
   7 * of this software and associated documentation files (the "Software"), to deal
   8 * in the Software without restriction, including without limitation the rights
   9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  10 * copies of the Software, and to permit persons to whom the Software is
  11 * furnished to do so, subject to the following conditions:
  12 *
  13 * The above copyright notice and this permission notice shall be included in
  14 * all copies or substantial portions of the Software.
  15 *
  16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  22 * THE SOFTWARE.
  23 */
  24
  25#include "hw/hw.h"
  26#include "hw/boards.h"
  27#include "sysemu/block-backend.h"
  28#include "sysemu/blockdev.h"
  29#include "qemu/config-file.h"
  30#include "sysemu/sysemu.h"
  31#include "monitor/monitor.h"
  32
  33static DriveInfo *add_init_drive(const char *optstr)
  34{
  35    DriveInfo *dinfo;
  36    QemuOpts *opts;
  37    MachineClass *mc;
  38
  39    opts = drive_def(optstr);
  40    if (!opts)
  41        return NULL;
  42
  43    mc = MACHINE_GET_CLASS(current_machine);
  44    dinfo = drive_new(opts, mc->block_default_type);
  45    if (!dinfo) {
  46        qemu_opts_del(opts);
  47        return NULL;
  48    }
  49
  50    return dinfo;
  51}
  52
  53void hmp_drive_add(Monitor *mon, const QDict *qdict)
  54{
  55    DriveInfo *dinfo = NULL;
  56    const char *opts = qdict_get_str(qdict, "opts");
  57
  58    dinfo = add_init_drive(opts);
  59    if (!dinfo) {
  60        goto err;
  61    }
  62    if (dinfo->devaddr) {
  63        monitor_printf(mon, "Parameter addr not supported\n");
  64        goto err;
  65    }
  66
  67    switch (dinfo->type) {
  68    case IF_NONE:
  69        monitor_printf(mon, "OK\n");
  70        break;
  71    default:
  72        monitor_printf(mon, "Can't hot-add drive to type %d\n", dinfo->type);
  73        goto err;
  74    }
  75    return;
  76
  77err:
  78    if (dinfo) {
  79        blk_unref(blk_by_legacy_dinfo(dinfo));
  80    }
  81}
  82