Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into staging
[qemu.git] / 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 "qemu/osdep.h"
26 #include "hw/boards.h"
27 #include "sysemu/block-backend.h"
28 #include "sysemu/blockdev.h"
29 #include "qapi/qmp/qdict.h"
30 #include "qapi/error.h"
31 #include "qemu/config-file.h"
32 #include "qemu/option.h"
33 #include "sysemu/sysemu.h"
34 #include "monitor/monitor.h"
35 #include "block/block_int.h"
36
37 static DriveInfo *add_init_drive(const char *optstr)
38 {
39 Error *err = NULL;
40 DriveInfo *dinfo;
41 QemuOpts *opts;
42 MachineClass *mc;
43
44 opts = drive_def(optstr);
45 if (!opts)
46 return NULL;
47
48 mc = MACHINE_GET_CLASS(current_machine);
49 dinfo = drive_new(opts, mc->block_default_type, &err);
50 if (err) {
51 error_report_err(err);
52 qemu_opts_del(opts);
53 return NULL;
54 }
55
56 return dinfo;
57 }
58
59 void hmp_drive_add(Monitor *mon, const QDict *qdict)
60 {
61 DriveInfo *dinfo = NULL;
62 const char *opts = qdict_get_str(qdict, "opts");
63 bool node = qdict_get_try_bool(qdict, "node", false);
64
65 if (node) {
66 hmp_drive_add_node(mon, opts);
67 return;
68 }
69
70 dinfo = add_init_drive(opts);
71 if (!dinfo) {
72 goto err;
73 }
74
75 switch (dinfo->type) {
76 case IF_NONE:
77 monitor_printf(mon, "OK\n");
78 break;
79 default:
80 monitor_printf(mon, "Can't hot-add drive to type %d\n", dinfo->type);
81 goto err;
82 }
83 return;
84
85 err:
86 if (dinfo) {
87 BlockBackend *blk = blk_by_legacy_dinfo(dinfo);
88 monitor_remove_blk(blk);
89 blk_unref(blk);
90 }
91 }