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