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/blockdev.h"
  28 #include "qemu/config-file.h"
  29 #include "sysemu/sysemu.h"
  30 #include "monitor/monitor.h"
  31
  32 DriveInfo *add_init_drive(const char *optstr)
  33 {
  34     DriveInfo *dinfo;
  35     QemuOpts *opts;
  36     MachineClass *mc;
  37
  38     opts = drive_def(optstr);
  39     if (!opts)
  40         return NULL;
  41
  42     mc = MACHINE_GET_CLASS(current_machine);
  43     dinfo = drive_init(opts, mc->block_default_type);
  44     if (!dinfo) {
  45         qemu_opts_del(opts);
  46         return NULL;
  47     }
  48
  49     return dinfo;
  50 }
  51
  52 void drive_hot_add(Monitor *mon, const QDict *qdict)
  53 {
  54     DriveInfo *dinfo = NULL;
  55     const char *opts = qdict_get_str(qdict, "opts");
  56
  57     dinfo = add_init_drive(opts);
  58     if (!dinfo) {
  59         goto err;
  60     }
  61     if (dinfo->devaddr) {
  62         monitor_printf(mon, "Parameter addr not supported\n");
  63         goto err;
  64     }
  65
  66     switch (dinfo->type) {
  67     case IF_NONE:
  68         monitor_printf(mon, "OK\n");
  69         break;
  70     default:
  71         if (pci_drive_hot_add(mon, qdict, dinfo)) {
  72             goto err;
  73         }
  74     }
  75     return;
  76
  77 err:
  78     if (dinfo) {
  79         drive_put_ref(dinfo);
  80     }
  81 }