block/monitor/block-hmp-cmds.c

   1 /*
   2  * Blockdev HMP commands
   3  *
   4  *  Authors:
   5  *  Anthony Liguori   <aliguori@us.ibm.com>
   6  *
   7  * Copyright (c) 2003-2008 Fabrice Bellard
   8  *
   9  * This work is licensed under the terms of the GNU GPL, version 2.
  10  * See the COPYING file in the top-level directory.
  11  * Contributions after 2012-01-13 are licensed under the terms of the
  12  * GNU GPL, version 2 or (at your option) any later version.
  13  *
  14  * This file incorporates work covered by the following copyright and
  15  * permission notice:
  16  *
  17  * Copyright (c) 2003-2008 Fabrice Bellard
  18  *
  19  * Permission is hereby granted, free of charge, to any person obtaining a copy
  20  * of this software and associated documentation files (the "Software"), to deal
  21  * in the Software without restriction, including without limitation the rights
  22  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  23  * copies of the Software, and to permit persons to whom the Software is
  24  * furnished to do so, subject to the following conditions:
  25  *
  26  * The above copyright notice and this permission notice shall be included in
  27  * all copies or substantial portions of the Software.
  28  *
  29  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  30  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  31  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  32  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  33  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  34  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  35  * THE SOFTWARE.
  36  */
  37
  38 #include "qemu/osdep.h"
  39 #include "hw/boards.h"
  40 #include "sysemu/block-backend.h"
  41 #include "sysemu/blockdev.h"
  42 #include "qapi/qapi-commands-block.h"
  43 #include "qapi/qmp/qdict.h"
  44 #include "qapi/error.h"
  45 #include "qapi/qmp/qerror.h"
  46 #include "qemu/config-file.h"
  47 #include "qemu/option.h"
  48 #include "qemu/sockets.h"
  49 #include "qemu/cutils.h"
  50 #include "sysemu/sysemu.h"
  51 #include "monitor/monitor.h"
  52 #include "monitor/hmp.h"
  53 #include "block/nbd.h"
  54 #include "block/qapi.h"
  55 #include "block/block_int.h"
  56 #include "block/block-hmp-cmds.h"
  57 #include "qemu-io.h"
  58
  59 static void hmp_drive_add_node(Monitor *mon, const char *optstr)
  60 {
  61     QemuOpts *opts;
  62     QDict *qdict;
  63     Error *local_err = NULL;
  64
  65     opts = qemu_opts_parse_noisily(&qemu_drive_opts, optstr, false);
  66     if (!opts) {
  67         return;
  68     }
  69
  70     qdict = qemu_opts_to_qdict(opts, NULL);
  71
  72     if (!qdict_get_try_str(qdict, "node-name")) {
  73         qobject_unref(qdict);
  74         error_report("'node-name' needs to be specified");
  75         goto out;
  76     }
  77
  78     BlockDriverState *bs = bds_tree_init(qdict, &local_err);
  79     if (!bs) {
  80         error_report_err(local_err);
  81         goto out;
  82     }
  83
  84     bdrv_set_monitor_owned(bs);
  85 out:
  86     qemu_opts_del(opts);
  87 }
  88
  89 void hmp_drive_add(Monitor *mon, const QDict *qdict)
  90 {
  91     Error *err = NULL;
  92     DriveInfo *dinfo;
  93     QemuOpts *opts;
  94     MachineClass *mc;
  95     const char *optstr = qdict_get_str(qdict, "opts");
  96     bool node = qdict_get_try_bool(qdict, "node", false);
  97
  98     if (node) {
  99         hmp_drive_add_node(mon, optstr);
 100         return;
 101     }
 102
 103     opts = drive_def(optstr);
 104     if (!opts)
 105         return;
 106
 107     mc = MACHINE_GET_CLASS(current_machine);
 108     dinfo = drive_new(opts, mc->block_default_type, &err);
 109     if (err) {
 110         error_report_err(err);
 111         qemu_opts_del(opts);
 112         goto err;
 113     }
 114
 115     if (!dinfo) {
 116         return;
 117     }
 118
 119     switch (dinfo->type) {
 120     case IF_NONE:
 121         monitor_printf(mon, "OK\n");
 122         break;
 123     default:
 124         monitor_printf(mon, "Can't hot-add drive to type %d\n", dinfo->type);
 125         goto err;
 126     }
 127     return;
 128
 129 err:
 130     if (dinfo) {
 131         BlockBackend *blk = blk_by_legacy_dinfo(dinfo);
 132         monitor_remove_blk(blk);
 133         blk_unref(blk);
 134     }
 135 }
 136
 137 void hmp_drive_del(Monitor *mon, const QDict *qdict)
 138 {
 139     const char *id = qdict_get_str(qdict, "id");
 140     BlockBackend *blk;
 141     BlockDriverState *bs;
 142     AioContext *aio_context;
 143     Error *local_err = NULL;
 144
 145     bs = bdrv_find_node(id);
 146     if (bs) {
 147         qmp_blockdev_del(id, &local_err);
 148         if (local_err) {
 149             error_report_err(local_err);
 150         }
 151         return;
 152     }
 153
 154     blk = blk_by_name(id);
 155     if (!blk) {
 156         error_report("Device '%s' not found", id);
 157         return;
 158     }
 159
 160     if (!blk_legacy_dinfo(blk)) {
 161         error_report("Deleting device added with blockdev-add"
 162                      " is not supported");
 163         return;
 164     }
 165
 166     aio_context = blk_get_aio_context(blk);
 167     aio_context_acquire(aio_context);
 168
 169     bs = blk_bs(blk);
 170     if (bs) {
 171         if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_DRIVE_DEL, &local_err)) {
 172             error_report_err(local_err);
 173             aio_context_release(aio_context);
 174             return;
 175         }
 176
 177         blk_remove_bs(blk);
 178     }
 179
 180     /* Make the BlockBackend and the attached BlockDriverState anonymous */
 181     monitor_remove_blk(blk);
 182
 183     /*
 184      * If this BlockBackend has a device attached to it, its refcount will be
 185      * decremented when the device is removed; otherwise we have to do so here.
 186      */
 187     if (blk_get_attached_dev(blk)) {
 188         /* Further I/O must not pause the guest */
 189         blk_set_on_error(blk, BLOCKDEV_ON_ERROR_REPORT,
 190                          BLOCKDEV_ON_ERROR_REPORT);
 191     } else {
 192         blk_unref(blk);
 193     }
 194
 195     aio_context_release(aio_context);
 196 }
 197
 198 void hmp_commit(Monitor *mon, const QDict *qdict)
 199 {
 200     const char *device = qdict_get_str(qdict, "device");
 201     BlockBackend *blk;
 202     int ret;
 203
 204     if (!strcmp(device, "all")) {
 205         ret = blk_commit_all();
 206     } else {
 207         BlockDriverState *bs;
 208         AioContext *aio_context;
 209
 210         blk = blk_by_name(device);
 211         if (!blk) {
 212             error_report("Device '%s' not found", device);
 213             return;
 214         }
 215         if (!blk_is_available(blk)) {
 216             error_report("Device '%s' has no medium", device);
 217             return;
 218         }
 219
 220         bs = blk_bs(blk);
 221         aio_context = bdrv_get_aio_context(bs);
 222         aio_context_acquire(aio_context);
 223
 224         ret = bdrv_commit(bs);
 225
 226         aio_context_release(aio_context);
 227     }
 228     if (ret < 0) {
 229         error_report("'commit' error for '%s': %s", device, strerror(-ret));
 230     }
 231 }
 232
 233 void hmp_drive_mirror(Monitor *mon, const QDict *qdict)
 234 {
 235     const char *filename = qdict_get_str(qdict, "target");
 236     const char *format = qdict_get_try_str(qdict, "format");
 237     bool reuse = qdict_get_try_bool(qdict, "reuse", false);
 238     bool full = qdict_get_try_bool(qdict, "full", false);
 239     Error *err = NULL;
 240     DriveMirror mirror = {
 241         .device = (char *)qdict_get_str(qdict, "device"),
 242         .target = (char *)filename,
 243         .has_format = !!format,
 244         .format = (char *)format,
 245         .sync = full ? MIRROR_SYNC_MODE_FULL : MIRROR_SYNC_MODE_TOP,
 246         .has_mode = true,
 247         .mode = reuse ? NEW_IMAGE_MODE_EXISTING : NEW_IMAGE_MODE_ABSOLUTE_PATHS,
 248         .unmap = true,
 249     };
 250
 251     if (!filename) {
 252         error_setg(&err, QERR_MISSING_PARAMETER, "target");
 253         hmp_handle_error(mon, err);
 254         return;
 255     }
 256     qmp_drive_mirror(&mirror, &err);
 257     hmp_handle_error(mon, err);
 258 }
 259
 260 void hmp_drive_backup(Monitor *mon, const QDict *qdict)
 261 {
 262     const char *device = qdict_get_str(qdict, "device");
 263     const char *filename = qdict_get_str(qdict, "target");
 264     const char *format = qdict_get_try_str(qdict, "format");
 265     bool reuse = qdict_get_try_bool(qdict, "reuse", false);
 266     bool full = qdict_get_try_bool(qdict, "full", false);
 267     bool compress = qdict_get_try_bool(qdict, "compress", false);
 268     Error *err = NULL;
 269     DriveBackup backup = {
 270         .device = (char *)device,
 271         .target = (char *)filename,
 272         .has_format = !!format,
 273         .format = (char *)format,
 274         .sync = full ? MIRROR_SYNC_MODE_FULL : MIRROR_SYNC_MODE_TOP,
 275         .has_mode = true,
 276         .mode = reuse ? NEW_IMAGE_MODE_EXISTING : NEW_IMAGE_MODE_ABSOLUTE_PATHS,
 277         .has_compress = !!compress,
 278         .compress = compress,
 279     };
 280
 281     if (!filename) {
 282         error_setg(&err, QERR_MISSING_PARAMETER, "target");
 283         hmp_handle_error(mon, err);
 284         return;
 285     }
 286
 287     qmp_drive_backup(&backup, &err);
 288     hmp_handle_error(mon, err);
 289 }
 290
 291 void hmp_block_job_set_speed(Monitor *mon, const QDict *qdict)
 292 {
 293     Error *error = NULL;
 294     const char *device = qdict_get_str(qdict, "device");
 295     int64_t value = qdict_get_int(qdict, "speed");
 296
 297     qmp_block_job_set_speed(device, value, &error);
 298
 299     hmp_handle_error(mon, error);
 300 }
 301
 302 void hmp_block_job_cancel(Monitor *mon, const QDict *qdict)
 303 {
 304     Error *error = NULL;
 305     const char *device = qdict_get_str(qdict, "device");
 306     bool force = qdict_get_try_bool(qdict, "force", false);
 307
 308     qmp_block_job_cancel(device, true, force, &error);
 309
 310     hmp_handle_error(mon, error);
 311 }
 312
 313 void hmp_block_job_pause(Monitor *mon, const QDict *qdict)
 314 {
 315     Error *error = NULL;
 316     const char *device = qdict_get_str(qdict, "device");
 317
 318     qmp_block_job_pause(device, &error);
 319
 320     hmp_handle_error(mon, error);
 321 }
 322
 323 void hmp_block_job_resume(Monitor *mon, const QDict *qdict)
 324 {
 325     Error *error = NULL;
 326     const char *device = qdict_get_str(qdict, "device");
 327
 328     qmp_block_job_resume(device, &error);
 329
 330     hmp_handle_error(mon, error);
 331 }
 332
 333 void hmp_block_job_complete(Monitor *mon, const QDict *qdict)
 334 {
 335     Error *error = NULL;
 336     const char *device = qdict_get_str(qdict, "device");
 337
 338     qmp_block_job_complete(device, &error);
 339
 340     hmp_handle_error(mon, error);
 341 }
 342
 343 void hmp_snapshot_blkdev(Monitor *mon, const QDict *qdict)
 344 {
 345     const char *device = qdict_get_str(qdict, "device");
 346     const char *filename = qdict_get_try_str(qdict, "snapshot-file");
 347     const char *format = qdict_get_try_str(qdict, "format");
 348     bool reuse = qdict_get_try_bool(qdict, "reuse", false);
 349     enum NewImageMode mode;
 350     Error *err = NULL;
 351
 352     if (!filename) {
 353         /*
 354          * In the future, if 'snapshot-file' is not specified, the snapshot
 355          * will be taken internally. Today it's actually required.
 356          */
 357         error_setg(&err, QERR_MISSING_PARAMETER, "snapshot-file");
 358         hmp_handle_error(mon, err);
 359         return;
 360     }
 361
 362     mode = reuse ? NEW_IMAGE_MODE_EXISTING : NEW_IMAGE_MODE_ABSOLUTE_PATHS;
 363     qmp_blockdev_snapshot_sync(true, device, false, NULL,
 364                                filename, false, NULL,
 365                                !!format, format,
 366                                true, mode, &err);
 367     hmp_handle_error(mon, err);
 368 }
 369
 370 void hmp_snapshot_blkdev_internal(Monitor *mon, const QDict *qdict)
 371 {
 372     const char *device = qdict_get_str(qdict, "device");
 373     const char *name = qdict_get_str(qdict, "name");
 374     Error *err = NULL;
 375
 376     qmp_blockdev_snapshot_internal_sync(device, name, &err);
 377     hmp_handle_error(mon, err);
 378 }
 379
 380 void hmp_snapshot_delete_blkdev_internal(Monitor *mon, const QDict *qdict)
 381 {
 382     const char *device = qdict_get_str(qdict, "device");
 383     const char *name = qdict_get_str(qdict, "name");
 384     const char *id = qdict_get_try_str(qdict, "id");
 385     Error *err = NULL;
 386
 387     qmp_blockdev_snapshot_delete_internal_sync(device, !!id, id,
 388                                                true, name, &err);
 389     hmp_handle_error(mon, err);
 390 }
 391
 392 void hmp_nbd_server_start(Monitor *mon, const QDict *qdict)
 393 {
 394     const char *uri = qdict_get_str(qdict, "uri");
 395     bool writable = qdict_get_try_bool(qdict, "writable", false);
 396     bool all = qdict_get_try_bool(qdict, "all", false);
 397     Error *local_err = NULL;
 398     BlockInfoList *block_list, *info;
 399     SocketAddress *addr;
 400     BlockExportNbd export;
 401
 402     if (writable && !all) {
 403         error_setg(&local_err, "-w only valid together with -a");
 404         goto exit;
 405     }
 406
 407     /* First check if the address is valid and start the server.  */
 408     addr = socket_parse(uri, &local_err);
 409     if (local_err != NULL) {
 410         goto exit;
 411     }
 412
 413     nbd_server_start(addr, NULL, NULL, &local_err);
 414     qapi_free_SocketAddress(addr);
 415     if (local_err != NULL) {
 416         goto exit;
 417     }
 418
 419     if (!all) {
 420         return;
 421     }
 422
 423     /* Then try adding all block devices.  If one fails, close all and
 424      * exit.
 425      */
 426     block_list = qmp_query_block(NULL);
 427
 428     for (info = block_list; info; info = info->next) {
 429         if (!info->value->has_inserted) {
 430             continue;
 431         }
 432
 433         export = (BlockExportNbd) {
 434             .device         = info->value->device,
 435             .has_writable   = true,
 436             .writable       = writable,
 437         };
 438
 439         qmp_nbd_server_add(&export, &local_err);
 440
 441         if (local_err != NULL) {
 442             qmp_nbd_server_stop(NULL);
 443             break;
 444         }
 445     }
 446
 447     qapi_free_BlockInfoList(block_list);
 448
 449 exit:
 450     hmp_handle_error(mon, local_err);
 451 }
 452
 453 void hmp_nbd_server_add(Monitor *mon, const QDict *qdict)
 454 {
 455     const char *device = qdict_get_str(qdict, "device");
 456     const char *name = qdict_get_try_str(qdict, "name");
 457     bool writable = qdict_get_try_bool(qdict, "writable", false);
 458     Error *local_err = NULL;
 459
 460     BlockExportNbd export = {
 461         .device         = (char *) device,
 462         .has_name       = !!name,
 463         .name           = (char *) name,
 464         .has_writable   = true,
 465         .writable       = writable,
 466     };
 467
 468     qmp_nbd_server_add(&export, &local_err);
 469     hmp_handle_error(mon, local_err);
 470 }
 471
 472 void hmp_nbd_server_remove(Monitor *mon, const QDict *qdict)
 473 {
 474     const char *name = qdict_get_str(qdict, "name");
 475     bool force = qdict_get_try_bool(qdict, "force", false);
 476     Error *err = NULL;
 477
 478     /* Rely on NBD_SERVER_REMOVE_MODE_SAFE being the default */
 479     qmp_nbd_server_remove(name, force, NBD_SERVER_REMOVE_MODE_HARD, &err);
 480     hmp_handle_error(mon, err);
 481 }
 482
 483 void hmp_nbd_server_stop(Monitor *mon, const QDict *qdict)
 484 {
 485     Error *err = NULL;
 486
 487     qmp_nbd_server_stop(&err);
 488     hmp_handle_error(mon, err);
 489 }
 490
 491 void hmp_block_resize(Monitor *mon, const QDict *qdict)
 492 {
 493     const char *device = qdict_get_str(qdict, "device");
 494     int64_t size = qdict_get_int(qdict, "size");
 495     Error *err = NULL;
 496
 497     qmp_block_resize(true, device, false, NULL, size, &err);
 498     hmp_handle_error(mon, err);
 499 }
 500
 501 void hmp_block_stream(Monitor *mon, const QDict *qdict)
 502 {
 503     Error *error = NULL;
 504     const char *device = qdict_get_str(qdict, "device");
 505     const char *base = qdict_get_try_str(qdict, "base");
 506     int64_t speed = qdict_get_try_int(qdict, "speed", 0);
 507
 508     qmp_block_stream(true, device, device, base != NULL, base, false, NULL,
 509                      false, NULL, qdict_haskey(qdict, "speed"), speed, true,
 510                      BLOCKDEV_ON_ERROR_REPORT, false, false, false, false,
 511                      &error);
 512
 513     hmp_handle_error(mon, error);
 514 }
 515
 516 void hmp_block_passwd(Monitor *mon, const QDict *qdict)
 517 {
 518     const char *device = qdict_get_str(qdict, "device");
 519     const char *password = qdict_get_str(qdict, "password");
 520     Error *err = NULL;
 521
 522     qmp_block_passwd(true, device, false, NULL, password, &err);
 523     hmp_handle_error(mon, err);
 524 }
 525
 526 void hmp_block_set_io_throttle(Monitor *mon, const QDict *qdict)
 527 {
 528     Error *err = NULL;
 529     char *device = (char *) qdict_get_str(qdict, "device");
 530     BlockIOThrottle throttle = {
 531         .bps = qdict_get_int(qdict, "bps"),
 532         .bps_rd = qdict_get_int(qdict, "bps_rd"),
 533         .bps_wr = qdict_get_int(qdict, "bps_wr"),
 534         .iops = qdict_get_int(qdict, "iops"),
 535         .iops_rd = qdict_get_int(qdict, "iops_rd"),
 536         .iops_wr = qdict_get_int(qdict, "iops_wr"),
 537     };
 538
 539     /*
 540      * qmp_block_set_io_throttle has separate parameters for the
 541      * (deprecated) block device name and the qdev ID but the HMP
 542      * version has only one, so we must decide which one to pass.
 543      */
 544     if (blk_by_name(device)) {
 545         throttle.has_device = true;
 546         throttle.device = device;
 547     } else {
 548         throttle.has_id = true;
 549         throttle.id = device;
 550     }
 551
 552     qmp_block_set_io_throttle(&throttle, &err);
 553     hmp_handle_error(mon, err);
 554 }
 555
 556 void hmp_eject(Monitor *mon, const QDict *qdict)
 557 {
 558     bool force = qdict_get_try_bool(qdict, "force", false);
 559     const char *device = qdict_get_str(qdict, "device");
 560     Error *err = NULL;
 561
 562     qmp_eject(true, device, false, NULL, true, force, &err);
 563     hmp_handle_error(mon, err);
 564 }
 565
 566 void hmp_qemu_io(Monitor *mon, const QDict *qdict)
 567 {
 568     BlockBackend *blk;
 569     BlockBackend *local_blk = NULL;
 570     bool qdev = qdict_get_try_bool(qdict, "qdev", false);
 571     const char *device = qdict_get_str(qdict, "device");
 572     const char *command = qdict_get_str(qdict, "command");
 573     Error *err = NULL;
 574     int ret;
 575
 576     if (qdev) {
 577         blk = blk_by_qdev_id(device, &err);
 578         if (!blk) {
 579             goto fail;
 580         }
 581     } else {
 582         blk = blk_by_name(device);
 583         if (!blk) {
 584             BlockDriverState *bs = bdrv_lookup_bs(NULL, device, &err);
 585             if (bs) {
 586                 blk = local_blk = blk_new(bdrv_get_aio_context(bs),
 587                                           0, BLK_PERM_ALL);
 588                 ret = blk_insert_bs(blk, bs, &err);
 589                 if (ret < 0) {
 590                     goto fail;
 591                 }
 592             } else {
 593                 goto fail;
 594             }
 595         }
 596     }
 597
 598     /*
 599      * Notably absent: Proper permission management. This is sad, but it seems
 600      * almost impossible to achieve without changing the semantics and thereby
 601      * limiting the use cases of the qemu-io HMP command.
 602      *
 603      * In an ideal world we would unconditionally create a new BlockBackend for
 604      * qemuio_command(), but we have commands like 'reopen' and want them to
 605      * take effect on the exact BlockBackend whose name the user passed instead
 606      * of just on a temporary copy of it.
 607      *
 608      * Another problem is that deleting the temporary BlockBackend involves
 609      * draining all requests on it first, but some qemu-iotests cases want to
 610      * issue multiple aio_read/write requests and expect them to complete in
 611      * the background while the monitor has already returned.
 612      *
 613      * This is also what prevents us from saving the original permissions and
 614      * restoring them later: We can't revoke permissions until all requests
 615      * have completed, and we don't know when that is nor can we really let
 616      * anything else run before we have revoken them to avoid race conditions.
 617      *
 618      * What happens now is that command() in qemu-io-cmds.c can extend the
 619      * permissions if necessary for the qemu-io command. And they simply stay
 620      * extended, possibly resulting in a read-only guest device keeping write
 621      * permissions. Ugly, but it appears to be the lesser evil.
 622      */
 623     qemuio_command(blk, command);
 624
 625 fail:
 626     blk_unref(local_blk);
 627     hmp_handle_error(mon, err);
 628 }
 629
 630 static void print_block_info(Monitor *mon, BlockInfo *info,
 631                              BlockDeviceInfo *inserted, bool verbose)
 632 {
 633     ImageInfo *image_info;
 634
 635     assert(!info || !info->has_inserted || info->inserted == inserted);
 636
 637     if (info && *info->device) {
 638         monitor_printf(mon, "%s", info->device);
 639         if (inserted && inserted->has_node_name) {
 640             monitor_printf(mon, " (%s)", inserted->node_name);
 641         }
 642     } else {
 643         assert(info || inserted);
 644         monitor_printf(mon, "%s",
 645                        inserted && inserted->has_node_name ? inserted->node_name
 646                        : info && info->has_qdev ? info->qdev
 647                        : "<anonymous>");
 648     }
 649
 650     if (inserted) {
 651         monitor_printf(mon, ": %s (%s%s%s)\n",
 652                        inserted->file,
 653                        inserted->drv,
 654                        inserted->ro ? ", read-only" : "",
 655                        inserted->encrypted ? ", encrypted" : "");
 656     } else {
 657         monitor_printf(mon, ": [not inserted]\n");
 658     }
 659
 660     if (info) {
 661         if (info->has_qdev) {
 662             monitor_printf(mon, "    Attached to:      %s\n", info->qdev);
 663         }
 664         if (info->has_io_status && info->io_status != BLOCK_DEVICE_IO_STATUS_OK) {
 665             monitor_printf(mon, "    I/O status:       %s\n",
 666                            BlockDeviceIoStatus_str(info->io_status));
 667         }
 668
 669         if (info->removable) {
 670             monitor_printf(mon, "    Removable device: %slocked, tray %s\n",
 671                            info->locked ? "" : "not ",
 672                            info->tray_open ? "open" : "closed");
 673         }
 674     }
 675
 676
 677     if (!inserted) {
 678         return;
 679     }
 680
 681     monitor_printf(mon, "    Cache mode:       %s%s%s\n",
 682                    inserted->cache->writeback ? "writeback" : "writethrough",
 683                    inserted->cache->direct ? ", direct" : "",
 684                    inserted->cache->no_flush ? ", ignore flushes" : "");
 685
 686     if (inserted->has_backing_file) {
 687         monitor_printf(mon,
 688                        "    Backing file:     %s "
 689                        "(chain depth: %" PRId64 ")\n",
 690                        inserted->backing_file,
 691                        inserted->backing_file_depth);
 692     }
 693
 694     if (inserted->detect_zeroes != BLOCKDEV_DETECT_ZEROES_OPTIONS_OFF) {
 695         monitor_printf(mon, "    Detect zeroes:    %s\n",
 696                 BlockdevDetectZeroesOptions_str(inserted->detect_zeroes));
 697     }
 698
 699     if (inserted->bps  || inserted->bps_rd  || inserted->bps_wr  ||
 700         inserted->iops || inserted->iops_rd || inserted->iops_wr)
 701     {
 702         monitor_printf(mon, "    I/O throttling:   bps=%" PRId64
 703                         " bps_rd=%" PRId64  " bps_wr=%" PRId64
 704                         " bps_max=%" PRId64
 705                         " bps_rd_max=%" PRId64
 706                         " bps_wr_max=%" PRId64
 707                         " iops=%" PRId64 " iops_rd=%" PRId64
 708                         " iops_wr=%" PRId64
 709                         " iops_max=%" PRId64
 710                         " iops_rd_max=%" PRId64
 711                         " iops_wr_max=%" PRId64
 712                         " iops_size=%" PRId64
 713                         " group=%s\n",
 714                         inserted->bps,
 715                         inserted->bps_rd,
 716                         inserted->bps_wr,
 717                         inserted->bps_max,
 718                         inserted->bps_rd_max,
 719                         inserted->bps_wr_max,
 720                         inserted->iops,
 721                         inserted->iops_rd,
 722                         inserted->iops_wr,
 723                         inserted->iops_max,
 724                         inserted->iops_rd_max,
 725                         inserted->iops_wr_max,
 726                         inserted->iops_size,
 727                         inserted->group);
 728     }
 729
 730     if (verbose) {
 731         monitor_printf(mon, "\nImages:\n");
 732         image_info = inserted->image;
 733         while (1) {
 734                 bdrv_image_info_dump(image_info);
 735             if (image_info->has_backing_image) {
 736                 image_info = image_info->backing_image;
 737             } else {
 738                 break;
 739             }
 740         }
 741     }
 742 }
 743
 744 void hmp_info_block(Monitor *mon, const QDict *qdict)
 745 {
 746     BlockInfoList *block_list, *info;
 747     BlockDeviceInfoList *blockdev_list, *blockdev;
 748     const char *device = qdict_get_try_str(qdict, "device");
 749     bool verbose = qdict_get_try_bool(qdict, "verbose", false);
 750     bool nodes = qdict_get_try_bool(qdict, "nodes", false);
 751     bool printed = false;
 752
 753     /* Print BlockBackend information */
 754     if (!nodes) {
 755         block_list = qmp_query_block(NULL);
 756     } else {
 757         block_list = NULL;
 758     }
 759
 760     for (info = block_list; info; info = info->next) {
 761         if (device && strcmp(device, info->value->device)) {
 762             continue;
 763         }
 764
 765         if (info != block_list) {
 766             monitor_printf(mon, "\n");
 767         }
 768
 769         print_block_info(mon, info->value, info->value->has_inserted
 770                                            ? info->value->inserted : NULL,
 771                          verbose);
 772         printed = true;
 773     }
 774
 775     qapi_free_BlockInfoList(block_list);
 776
 777     if ((!device && !nodes) || printed) {
 778         return;
 779     }
 780
 781     /* Print node information */
 782     blockdev_list = qmp_query_named_block_nodes(false, false, NULL);
 783     for (blockdev = blockdev_list; blockdev; blockdev = blockdev->next) {
 784         assert(blockdev->value->has_node_name);
 785         if (device && strcmp(device, blockdev->value->node_name)) {
 786             continue;
 787         }
 788
 789         if (blockdev != blockdev_list) {
 790             monitor_printf(mon, "\n");
 791         }
 792
 793         print_block_info(mon, NULL, blockdev->value, verbose);
 794     }
 795     qapi_free_BlockDeviceInfoList(blockdev_list);
 796 }
 797
 798 void hmp_info_blockstats(Monitor *mon, const QDict *qdict)
 799 {
 800     BlockStatsList *stats_list, *stats;
 801
 802     stats_list = qmp_query_blockstats(false, false, NULL);
 803
 804     for (stats = stats_list; stats; stats = stats->next) {
 805         if (!stats->value->has_device) {
 806             continue;
 807         }
 808
 809         monitor_printf(mon, "%s:", stats->value->device);
 810         monitor_printf(mon, " rd_bytes=%" PRId64
 811                        " wr_bytes=%" PRId64
 812                        " rd_operations=%" PRId64
 813                        " wr_operations=%" PRId64
 814                        " flush_operations=%" PRId64
 815                        " wr_total_time_ns=%" PRId64
 816                        " rd_total_time_ns=%" PRId64
 817                        " flush_total_time_ns=%" PRId64
 818                        " rd_merged=%" PRId64
 819                        " wr_merged=%" PRId64
 820                        " idle_time_ns=%" PRId64
 821                        "\n",
 822                        stats->value->stats->rd_bytes,
 823                        stats->value->stats->wr_bytes,
 824                        stats->value->stats->rd_operations,
 825                        stats->value->stats->wr_operations,
 826                        stats->value->stats->flush_operations,
 827                        stats->value->stats->wr_total_time_ns,
 828                        stats->value->stats->rd_total_time_ns,
 829                        stats->value->stats->flush_total_time_ns,
 830                        stats->value->stats->rd_merged,
 831                        stats->value->stats->wr_merged,
 832                        stats->value->stats->idle_time_ns);
 833     }
 834
 835     qapi_free_BlockStatsList(stats_list);
 836 }
 837
 838 void hmp_info_block_jobs(Monitor *mon, const QDict *qdict)
 839 {
 840     BlockJobInfoList *list;
 841     Error *err = NULL;
 842
 843     list = qmp_query_block_jobs(&err);
 844     assert(!err);
 845
 846     if (!list) {
 847         monitor_printf(mon, "No active jobs\n");
 848         return;
 849     }
 850
 851     while (list) {
 852         if (strcmp(list->value->type, "stream") == 0) {
 853             monitor_printf(mon, "Streaming device %s: Completed %" PRId64
 854                            " of %" PRId64 " bytes, speed limit %" PRId64
 855                            " bytes/s\n",
 856                            list->value->device,
 857                            list->value->offset,
 858                            list->value->len,
 859                            list->value->speed);
 860         } else {
 861             monitor_printf(mon, "Type %s, device %s: Completed %" PRId64
 862                            " of %" PRId64 " bytes, speed limit %" PRId64
 863                            " bytes/s\n",
 864                            list->value->type,
 865                            list->value->device,
 866                            list->value->offset,
 867                            list->value->len,
 868                            list->value->speed);
 869         }
 870         list = list->next;
 871     }
 872
 873     qapi_free_BlockJobInfoList(list);
 874 }
 875
 876 void hmp_info_snapshots(Monitor *mon, const QDict *qdict)
 877 {
 878     BlockDriverState *bs, *bs1;
 879     BdrvNextIterator it1;
 880     QEMUSnapshotInfo *sn_tab, *sn;
 881     bool no_snapshot = true;
 882     int nb_sns, i;
 883     int total;
 884     int *global_snapshots;
 885     AioContext *aio_context;
 886
 887     typedef struct SnapshotEntry {
 888         QEMUSnapshotInfo sn;
 889         QTAILQ_ENTRY(SnapshotEntry) next;
 890     } SnapshotEntry;
 891
 892     typedef struct ImageEntry {
 893         const char *imagename;
 894         QTAILQ_ENTRY(ImageEntry) next;
 895         QTAILQ_HEAD(, SnapshotEntry) snapshots;
 896     } ImageEntry;
 897
 898     QTAILQ_HEAD(, ImageEntry) image_list =
 899         QTAILQ_HEAD_INITIALIZER(image_list);
 900
 901     ImageEntry *image_entry, *next_ie;
 902     SnapshotEntry *snapshot_entry;
 903
 904     bs = bdrv_all_find_vmstate_bs();
 905     if (!bs) {
 906         monitor_printf(mon, "No available block device supports snapshots\n");
 907         return;
 908     }
 909     aio_context = bdrv_get_aio_context(bs);
 910
 911     aio_context_acquire(aio_context);
 912     nb_sns = bdrv_snapshot_list(bs, &sn_tab);
 913     aio_context_release(aio_context);
 914
 915     if (nb_sns < 0) {
 916         monitor_printf(mon, "bdrv_snapshot_list: error %d\n", nb_sns);
 917         return;
 918     }
 919
 920     for (bs1 = bdrv_first(&it1); bs1; bs1 = bdrv_next(&it1)) {
 921         int bs1_nb_sns = 0;
 922         ImageEntry *ie;
 923         SnapshotEntry *se;
 924         AioContext *ctx = bdrv_get_aio_context(bs1);
 925
 926         aio_context_acquire(ctx);
 927         if (bdrv_can_snapshot(bs1)) {
 928             sn = NULL;
 929             bs1_nb_sns = bdrv_snapshot_list(bs1, &sn);
 930             if (bs1_nb_sns > 0) {
 931                 no_snapshot = false;
 932                 ie = g_new0(ImageEntry, 1);
 933                 ie->imagename = bdrv_get_device_name(bs1);
 934                 QTAILQ_INIT(&ie->snapshots);
 935                 QTAILQ_INSERT_TAIL(&image_list, ie, next);
 936                 for (i = 0; i < bs1_nb_sns; i++) {
 937                     se = g_new0(SnapshotEntry, 1);
 938                     se->sn = sn[i];
 939                     QTAILQ_INSERT_TAIL(&ie->snapshots, se, next);
 940                 }
 941             }
 942             g_free(sn);
 943         }
 944         aio_context_release(ctx);
 945     }
 946
 947     if (no_snapshot) {
 948         monitor_printf(mon, "There is no snapshot available.\n");
 949         return;
 950     }
 951
 952     global_snapshots = g_new0(int, nb_sns);
 953     total = 0;
 954     for (i = 0; i < nb_sns; i++) {
 955         SnapshotEntry *next_sn;
 956         if (bdrv_all_find_snapshot(sn_tab[i].name, &bs1) == 0) {
 957             global_snapshots[total] = i;
 958             total++;
 959             QTAILQ_FOREACH(image_entry, &image_list, next) {
 960                 QTAILQ_FOREACH_SAFE(snapshot_entry, &image_entry->snapshots,
 961                                     next, next_sn) {
 962                     if (!strcmp(sn_tab[i].name, snapshot_entry->sn.name)) {
 963                         QTAILQ_REMOVE(&image_entry->snapshots, snapshot_entry,
 964                                       next);
 965                         g_free(snapshot_entry);
 966                     }
 967                 }
 968             }
 969         }
 970     }
 971     monitor_printf(mon, "List of snapshots present on all disks:\n");
 972
 973     if (total > 0) {
 974         bdrv_snapshot_dump(NULL);
 975         monitor_printf(mon, "\n");
 976         for (i = 0; i < total; i++) {
 977             sn = &sn_tab[global_snapshots[i]];
 978             /*
 979              * The ID is not guaranteed to be the same on all images, so
 980              * overwrite it.
 981              */
 982             pstrcpy(sn->id_str, sizeof(sn->id_str), "--");
 983             bdrv_snapshot_dump(sn);
 984             monitor_printf(mon, "\n");
 985         }
 986     } else {
 987         monitor_printf(mon, "None\n");
 988     }
 989
 990     QTAILQ_FOREACH(image_entry, &image_list, next) {
 991         if (QTAILQ_EMPTY(&image_entry->snapshots)) {
 992             continue;
 993         }
 994         monitor_printf(mon,
 995                        "\nList of partial (non-loadable) snapshots on '%s':\n",
 996                        image_entry->imagename);
 997         bdrv_snapshot_dump(NULL);
 998         monitor_printf(mon, "\n");
 999         QTAILQ_FOREACH(snapshot_entry, &image_entry->snapshots, next) {
1000             bdrv_snapshot_dump(&snapshot_entry->sn);
1001             monitor_printf(mon, "\n");
1002         }
1003     }
1004
1005     QTAILQ_FOREACH_SAFE(image_entry, &image_list, next, next_ie) {
1006         SnapshotEntry *next_sn;
1007         QTAILQ_FOREACH_SAFE(snapshot_entry, &image_entry->snapshots, next,
1008                             next_sn) {
1009             g_free(snapshot_entry);
1010         }
1011         g_free(image_entry);
1012     }
1013     g_free(sn_tab);
1014     g_free(global_snapshots);
1015 }