block/qapi.c

   1 /*
   2  * Block layer qmp and info dump related functions
   3  *
   4  * Copyright (c) 2003-2008 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 "block/qapi.h"
  27 #include "block/block_int.h"
  28 #include "block/throttle-groups.h"
  29 #include "block/write-threshold.h"
  30 #include "qmp-commands.h"
  31 #include "qapi-visit.h"
  32 #include "qapi/qmp-output-visitor.h"
  33 #include "qapi/qmp/types.h"
  34 #include "sysemu/block-backend.h"
  35 #include "qemu/cutils.h"
  36
  37 BlockDeviceInfo *bdrv_block_device_info(BlockDriverState *bs, Error **errp)
  38 {
  39     ImageInfo **p_image_info;
  40     BlockDriverState *bs0;
  41     BlockDeviceInfo *info = g_malloc0(sizeof(*info));
  42
  43     info->file                   = g_strdup(bs->filename);
  44     info->ro                     = bs->read_only;
  45     info->drv                    = g_strdup(bs->drv->format_name);
  46     info->encrypted              = bs->encrypted;
  47     info->encryption_key_missing = bdrv_key_required(bs);
  48
  49     info->cache = g_new(BlockdevCacheInfo, 1);
  50     *info->cache = (BlockdevCacheInfo) {
  51         .writeback      = bdrv_enable_write_cache(bs),
  52         .direct         = !!(bs->open_flags & BDRV_O_NOCACHE),
  53         .no_flush       = !!(bs->open_flags & BDRV_O_NO_FLUSH),
  54     };
  55
  56     if (bs->node_name[0]) {
  57         info->has_node_name = true;
  58         info->node_name = g_strdup(bs->node_name);
  59     }
  60
  61     if (bs->backing_file[0]) {
  62         info->has_backing_file = true;
  63         info->backing_file = g_strdup(bs->backing_file);
  64     }
  65
  66     info->backing_file_depth = bdrv_get_backing_file_depth(bs);
  67     info->detect_zeroes = bs->detect_zeroes;
  68
  69     if (bs->throttle_state) {
  70         ThrottleConfig cfg;
  71
  72         throttle_group_get_config(bs, &cfg);
  73
  74         info->bps     = cfg.buckets[THROTTLE_BPS_TOTAL].avg;
  75         info->bps_rd  = cfg.buckets[THROTTLE_BPS_READ].avg;
  76         info->bps_wr  = cfg.buckets[THROTTLE_BPS_WRITE].avg;
  77
  78         info->iops    = cfg.buckets[THROTTLE_OPS_TOTAL].avg;
  79         info->iops_rd = cfg.buckets[THROTTLE_OPS_READ].avg;
  80         info->iops_wr = cfg.buckets[THROTTLE_OPS_WRITE].avg;
  81
  82         info->has_bps_max     = cfg.buckets[THROTTLE_BPS_TOTAL].max;
  83         info->bps_max         = cfg.buckets[THROTTLE_BPS_TOTAL].max;
  84         info->has_bps_rd_max  = cfg.buckets[THROTTLE_BPS_READ].max;
  85         info->bps_rd_max      = cfg.buckets[THROTTLE_BPS_READ].max;
  86         info->has_bps_wr_max  = cfg.buckets[THROTTLE_BPS_WRITE].max;
  87         info->bps_wr_max      = cfg.buckets[THROTTLE_BPS_WRITE].max;
  88
  89         info->has_iops_max    = cfg.buckets[THROTTLE_OPS_TOTAL].max;
  90         info->iops_max        = cfg.buckets[THROTTLE_OPS_TOTAL].max;
  91         info->has_iops_rd_max = cfg.buckets[THROTTLE_OPS_READ].max;
  92         info->iops_rd_max     = cfg.buckets[THROTTLE_OPS_READ].max;
  93         info->has_iops_wr_max = cfg.buckets[THROTTLE_OPS_WRITE].max;
  94         info->iops_wr_max     = cfg.buckets[THROTTLE_OPS_WRITE].max;
  95
  96         info->has_bps_max_length     = info->has_bps_max;
  97         info->bps_max_length         =
  98             cfg.buckets[THROTTLE_BPS_TOTAL].burst_length;
  99         info->has_bps_rd_max_length  = info->has_bps_rd_max;
 100         info->bps_rd_max_length      =
 101             cfg.buckets[THROTTLE_BPS_READ].burst_length;
 102         info->has_bps_wr_max_length  = info->has_bps_wr_max;
 103         info->bps_wr_max_length      =
 104             cfg.buckets[THROTTLE_BPS_WRITE].burst_length;
 105
 106         info->has_iops_max_length    = info->has_iops_max;
 107         info->iops_max_length        =
 108             cfg.buckets[THROTTLE_OPS_TOTAL].burst_length;
 109         info->has_iops_rd_max_length = info->has_iops_rd_max;
 110         info->iops_rd_max_length     =
 111             cfg.buckets[THROTTLE_OPS_READ].burst_length;
 112         info->has_iops_wr_max_length = info->has_iops_wr_max;
 113         info->iops_wr_max_length     =
 114             cfg.buckets[THROTTLE_OPS_WRITE].burst_length;
 115
 116         info->has_iops_size = cfg.op_size;
 117         info->iops_size = cfg.op_size;
 118
 119         info->has_group = true;
 120         info->group = g_strdup(throttle_group_get_name(bs));
 121     }
 122
 123     info->write_threshold = bdrv_write_threshold_get(bs);
 124
 125     bs0 = bs;
 126     p_image_info = &info->image;
 127     while (1) {
 128         Error *local_err = NULL;
 129         bdrv_query_image_info(bs0, p_image_info, &local_err);
 130         if (local_err) {
 131             error_propagate(errp, local_err);
 132             qapi_free_BlockDeviceInfo(info);
 133             return NULL;
 134         }
 135         if (bs0->drv && bs0->backing) {
 136             bs0 = bs0->backing->bs;
 137             (*p_image_info)->has_backing_image = true;
 138             p_image_info = &((*p_image_info)->backing_image);
 139         } else {
 140             break;
 141         }
 142     }
 143
 144     return info;
 145 }
 146
 147 /*
 148  * Returns 0 on success, with *p_list either set to describe snapshot
 149  * information, or NULL because there are no snapshots.  Returns -errno on
 150  * error, with *p_list untouched.
 151  */
 152 int bdrv_query_snapshot_info_list(BlockDriverState *bs,
 153                                   SnapshotInfoList **p_list,
 154                                   Error **errp)
 155 {
 156     int i, sn_count;
 157     QEMUSnapshotInfo *sn_tab = NULL;
 158     SnapshotInfoList *info_list, *cur_item = NULL, *head = NULL;
 159     SnapshotInfo *info;
 160
 161     sn_count = bdrv_snapshot_list(bs, &sn_tab);
 162     if (sn_count < 0) {
 163         const char *dev = bdrv_get_device_name(bs);
 164         switch (sn_count) {
 165         case -ENOMEDIUM:
 166             error_setg(errp, "Device '%s' is not inserted", dev);
 167             break;
 168         case -ENOTSUP:
 169             error_setg(errp,
 170                        "Device '%s' does not support internal snapshots",
 171                        dev);
 172             break;
 173         default:
 174             error_setg_errno(errp, -sn_count,
 175                              "Can't list snapshots of device '%s'", dev);
 176             break;
 177         }
 178         return sn_count;
 179     }
 180
 181     for (i = 0; i < sn_count; i++) {
 182         info = g_new0(SnapshotInfo, 1);
 183         info->id            = g_strdup(sn_tab[i].id_str);
 184         info->name          = g_strdup(sn_tab[i].name);
 185         info->vm_state_size = sn_tab[i].vm_state_size;
 186         info->date_sec      = sn_tab[i].date_sec;
 187         info->date_nsec     = sn_tab[i].date_nsec;
 188         info->vm_clock_sec  = sn_tab[i].vm_clock_nsec / 1000000000;
 189         info->vm_clock_nsec = sn_tab[i].vm_clock_nsec % 1000000000;
 190
 191         info_list = g_new0(SnapshotInfoList, 1);
 192         info_list->value = info;
 193
 194         /* XXX: waiting for the qapi to support qemu-queue.h types */
 195         if (!cur_item) {
 196             head = cur_item = info_list;
 197         } else {
 198             cur_item->next = info_list;
 199             cur_item = info_list;
 200         }
 201
 202     }
 203
 204     g_free(sn_tab);
 205     *p_list = head;
 206     return 0;
 207 }
 208
 209 /**
 210  * bdrv_query_image_info:
 211  * @bs: block device to examine
 212  * @p_info: location to store image information
 213  * @errp: location to store error information
 214  *
 215  * Store "flat" image information in @p_info.
 216  *
 217  * "Flat" means it does *not* query backing image information,
 218  * i.e. (*pinfo)->has_backing_image will be set to false and
 219  * (*pinfo)->backing_image to NULL even when the image does in fact have
 220  * a backing image.
 221  *
 222  * @p_info will be set only on success. On error, store error in @errp.
 223  */
 224 void bdrv_query_image_info(BlockDriverState *bs,
 225                            ImageInfo **p_info,
 226                            Error **errp)
 227 {
 228     int64_t size;
 229     const char *backing_filename;
 230     BlockDriverInfo bdi;
 231     int ret;
 232     Error *err = NULL;
 233     ImageInfo *info;
 234
 235     aio_context_acquire(bdrv_get_aio_context(bs));
 236
 237     size = bdrv_getlength(bs);
 238     if (size < 0) {
 239         error_setg_errno(errp, -size, "Can't get size of device '%s'",
 240                          bdrv_get_device_name(bs));
 241         goto out;
 242     }
 243
 244     info = g_new0(ImageInfo, 1);
 245     info->filename        = g_strdup(bs->filename);
 246     info->format          = g_strdup(bdrv_get_format_name(bs));
 247     info->virtual_size    = size;
 248     info->actual_size     = bdrv_get_allocated_file_size(bs);
 249     info->has_actual_size = info->actual_size >= 0;
 250     if (bdrv_is_encrypted(bs)) {
 251         info->encrypted = true;
 252         info->has_encrypted = true;
 253     }
 254     if (bdrv_get_info(bs, &bdi) >= 0) {
 255         if (bdi.cluster_size != 0) {
 256             info->cluster_size = bdi.cluster_size;
 257             info->has_cluster_size = true;
 258         }
 259         info->dirty_flag = bdi.is_dirty;
 260         info->has_dirty_flag = true;
 261     }
 262     info->format_specific     = bdrv_get_specific_info(bs);
 263     info->has_format_specific = info->format_specific != NULL;
 264
 265     backing_filename = bs->backing_file;
 266     if (backing_filename[0] != '\0') {
 267         char *backing_filename2 = g_malloc0(PATH_MAX);
 268         info->backing_filename = g_strdup(backing_filename);
 269         info->has_backing_filename = true;
 270         bdrv_get_full_backing_filename(bs, backing_filename2, PATH_MAX, &err);
 271         if (err) {
 272             /* Can't reconstruct the full backing filename, so we must omit
 273              * this field and apply a Best Effort to this query. */
 274             g_free(backing_filename2);
 275             backing_filename2 = NULL;
 276             error_free(err);
 277             err = NULL;
 278         }
 279
 280         /* Always report the full_backing_filename if present, even if it's the
 281          * same as backing_filename. That they are same is useful info. */
 282         if (backing_filename2) {
 283             info->full_backing_filename = g_strdup(backing_filename2);
 284             info->has_full_backing_filename = true;
 285         }
 286
 287         if (bs->backing_format[0]) {
 288             info->backing_filename_format = g_strdup(bs->backing_format);
 289             info->has_backing_filename_format = true;
 290         }
 291         g_free(backing_filename2);
 292     }
 293
 294     ret = bdrv_query_snapshot_info_list(bs, &info->snapshots, &err);
 295     switch (ret) {
 296     case 0:
 297         if (info->snapshots) {
 298             info->has_snapshots = true;
 299         }
 300         break;
 301     /* recoverable error */
 302     case -ENOMEDIUM:
 303     case -ENOTSUP:
 304         error_free(err);
 305         break;
 306     default:
 307         error_propagate(errp, err);
 308         qapi_free_ImageInfo(info);
 309         goto out;
 310     }
 311
 312     *p_info = info;
 313
 314 out:
 315     aio_context_release(bdrv_get_aio_context(bs));
 316 }
 317
 318 /* @p_info will be set only on success. */
 319 static void bdrv_query_info(BlockBackend *blk, BlockInfo **p_info,
 320                             Error **errp)
 321 {
 322     BlockInfo *info = g_malloc0(sizeof(*info));
 323     BlockDriverState *bs = blk_bs(blk);
 324     info->device = g_strdup(blk_name(blk));
 325     info->type = g_strdup("unknown");
 326     info->locked = blk_dev_is_medium_locked(blk);
 327     info->removable = blk_dev_has_removable_media(blk);
 328
 329     if (blk_dev_has_tray(blk)) {
 330         info->has_tray_open = true;
 331         info->tray_open = blk_dev_is_tray_open(blk);
 332     }
 333
 334     if (blk_iostatus_is_enabled(blk)) {
 335         info->has_io_status = true;
 336         info->io_status = blk_iostatus(blk);
 337     }
 338
 339     if (bs && !QLIST_EMPTY(&bs->dirty_bitmaps)) {
 340         info->has_dirty_bitmaps = true;
 341         info->dirty_bitmaps = bdrv_query_dirty_bitmaps(bs);
 342     }
 343
 344     if (bs && bs->drv) {
 345         info->has_inserted = true;
 346         info->inserted = bdrv_block_device_info(bs, errp);
 347         if (info->inserted == NULL) {
 348             goto err;
 349         }
 350     }
 351
 352     *p_info = info;
 353     return;
 354
 355  err:
 356     qapi_free_BlockInfo(info);
 357 }
 358
 359 static BlockStats *bdrv_query_stats(BlockBackend *blk,
 360                                     const BlockDriverState *bs,
 361                                     bool query_backing);
 362
 363 static void bdrv_query_blk_stats(BlockStats *s, BlockBackend *blk)
 364 {
 365     BlockAcctStats *stats = blk_get_stats(blk);
 366     BlockAcctTimedStats *ts = NULL;
 367
 368     s->has_device = true;
 369     s->device = g_strdup(blk_name(blk));
 370
 371     s->stats->rd_bytes = stats->nr_bytes[BLOCK_ACCT_READ];
 372     s->stats->wr_bytes = stats->nr_bytes[BLOCK_ACCT_WRITE];
 373     s->stats->rd_operations = stats->nr_ops[BLOCK_ACCT_READ];
 374     s->stats->wr_operations = stats->nr_ops[BLOCK_ACCT_WRITE];
 375
 376     s->stats->failed_rd_operations = stats->failed_ops[BLOCK_ACCT_READ];
 377     s->stats->failed_wr_operations = stats->failed_ops[BLOCK_ACCT_WRITE];
 378     s->stats->failed_flush_operations = stats->failed_ops[BLOCK_ACCT_FLUSH];
 379
 380     s->stats->invalid_rd_operations = stats->invalid_ops[BLOCK_ACCT_READ];
 381     s->stats->invalid_wr_operations = stats->invalid_ops[BLOCK_ACCT_WRITE];
 382     s->stats->invalid_flush_operations =
 383         stats->invalid_ops[BLOCK_ACCT_FLUSH];
 384
 385     s->stats->rd_merged = stats->merged[BLOCK_ACCT_READ];
 386     s->stats->wr_merged = stats->merged[BLOCK_ACCT_WRITE];
 387     s->stats->flush_operations = stats->nr_ops[BLOCK_ACCT_FLUSH];
 388     s->stats->wr_total_time_ns = stats->total_time_ns[BLOCK_ACCT_WRITE];
 389     s->stats->rd_total_time_ns = stats->total_time_ns[BLOCK_ACCT_READ];
 390     s->stats->flush_total_time_ns = stats->total_time_ns[BLOCK_ACCT_FLUSH];
 391
 392     s->stats->has_idle_time_ns = stats->last_access_time_ns > 0;
 393     if (s->stats->has_idle_time_ns) {
 394         s->stats->idle_time_ns = block_acct_idle_time_ns(stats);
 395     }
 396
 397     s->stats->account_invalid = stats->account_invalid;
 398     s->stats->account_failed = stats->account_failed;
 399
 400     while ((ts = block_acct_interval_next(stats, ts))) {
 401         BlockDeviceTimedStatsList *timed_stats =
 402             g_malloc0(sizeof(*timed_stats));
 403         BlockDeviceTimedStats *dev_stats = g_malloc0(sizeof(*dev_stats));
 404         timed_stats->next = s->stats->timed_stats;
 405         timed_stats->value = dev_stats;
 406         s->stats->timed_stats = timed_stats;
 407
 408         TimedAverage *rd = &ts->latency[BLOCK_ACCT_READ];
 409         TimedAverage *wr = &ts->latency[BLOCK_ACCT_WRITE];
 410         TimedAverage *fl = &ts->latency[BLOCK_ACCT_FLUSH];
 411
 412         dev_stats->interval_length = ts->interval_length;
 413
 414         dev_stats->min_rd_latency_ns = timed_average_min(rd);
 415         dev_stats->max_rd_latency_ns = timed_average_max(rd);
 416         dev_stats->avg_rd_latency_ns = timed_average_avg(rd);
 417
 418         dev_stats->min_wr_latency_ns = timed_average_min(wr);
 419         dev_stats->max_wr_latency_ns = timed_average_max(wr);
 420         dev_stats->avg_wr_latency_ns = timed_average_avg(wr);
 421
 422         dev_stats->min_flush_latency_ns = timed_average_min(fl);
 423         dev_stats->max_flush_latency_ns = timed_average_max(fl);
 424         dev_stats->avg_flush_latency_ns = timed_average_avg(fl);
 425
 426         dev_stats->avg_rd_queue_depth =
 427             block_acct_queue_depth(ts, BLOCK_ACCT_READ);
 428         dev_stats->avg_wr_queue_depth =
 429             block_acct_queue_depth(ts, BLOCK_ACCT_WRITE);
 430     }
 431 }
 432
 433 static void bdrv_query_bds_stats(BlockStats *s, const BlockDriverState *bs,
 434                                  bool query_backing)
 435 {
 436     if (bdrv_get_node_name(bs)[0]) {
 437         s->has_node_name = true;
 438         s->node_name = g_strdup(bdrv_get_node_name(bs));
 439     }
 440
 441     s->stats->wr_highest_offset = bs->wr_highest_offset;
 442
 443     if (bs->file) {
 444         s->has_parent = true;
 445         s->parent = bdrv_query_stats(NULL, bs->file->bs, query_backing);
 446     }
 447
 448     if (query_backing && bs->backing) {
 449         s->has_backing = true;
 450         s->backing = bdrv_query_stats(NULL, bs->backing->bs, query_backing);
 451     }
 452
 453 }
 454
 455 static BlockStats *bdrv_query_stats(BlockBackend *blk,
 456                                     const BlockDriverState *bs,
 457                                     bool query_backing)
 458 {
 459     BlockStats *s;
 460
 461     s = g_malloc0(sizeof(*s));
 462     s->stats = g_malloc0(sizeof(*s->stats));
 463
 464     if (blk) {
 465         bdrv_query_blk_stats(s, blk);
 466     }
 467     if (bs) {
 468         bdrv_query_bds_stats(s, bs, query_backing);
 469     }
 470
 471     return s;
 472 }
 473
 474 BlockInfoList *qmp_query_block(Error **errp)
 475 {
 476     BlockInfoList *head = NULL, **p_next = &head;
 477     BlockBackend *blk;
 478     Error *local_err = NULL;
 479
 480     for (blk = blk_next(NULL); blk; blk = blk_next(blk)) {
 481         BlockInfoList *info = g_malloc0(sizeof(*info));
 482         bdrv_query_info(blk, &info->value, &local_err);
 483         if (local_err) {
 484             error_propagate(errp, local_err);
 485             g_free(info);
 486             qapi_free_BlockInfoList(head);
 487             return NULL;
 488         }
 489
 490         *p_next = info;
 491         p_next = &info->next;
 492     }
 493
 494     return head;
 495 }
 496
 497 static bool next_query_bds(BlockBackend **blk, BlockDriverState **bs,
 498                            bool query_nodes)
 499 {
 500     if (query_nodes) {
 501         *bs = bdrv_next_node(*bs);
 502         return !!*bs;
 503     }
 504
 505     *blk = blk_next(*blk);
 506     *bs = *blk ? blk_bs(*blk) : NULL;
 507
 508     return !!*blk;
 509 }
 510
 511 BlockStatsList *qmp_query_blockstats(bool has_query_nodes,
 512                                      bool query_nodes,
 513                                      Error **errp)
 514 {
 515     BlockStatsList *head = NULL, **p_next = &head;
 516     BlockBackend *blk = NULL;
 517     BlockDriverState *bs = NULL;
 518
 519     /* Just to be safe if query_nodes is not always initialized */
 520     query_nodes = has_query_nodes && query_nodes;
 521
 522     while (next_query_bds(&blk, &bs, query_nodes)) {
 523         BlockStatsList *info = g_malloc0(sizeof(*info));
 524         AioContext *ctx = blk ? blk_get_aio_context(blk)
 525                               : bdrv_get_aio_context(bs);
 526
 527         aio_context_acquire(ctx);
 528         info->value = bdrv_query_stats(blk, bs, !query_nodes);
 529         aio_context_release(ctx);
 530
 531         *p_next = info;
 532         p_next = &info->next;
 533     }
 534
 535     return head;
 536 }
 537
 538 #define NB_SUFFIXES 4
 539
 540 static char *get_human_readable_size(char *buf, int buf_size, int64_t size)
 541 {
 542     static const char suffixes[NB_SUFFIXES] = {'K', 'M', 'G', 'T'};
 543     int64_t base;
 544     int i;
 545
 546     if (size <= 999) {
 547         snprintf(buf, buf_size, "%" PRId64, size);
 548     } else {
 549         base = 1024;
 550         for (i = 0; i < NB_SUFFIXES; i++) {
 551             if (size < (10 * base)) {
 552                 snprintf(buf, buf_size, "%0.1f%c",
 553                          (double)size / base,
 554                          suffixes[i]);
 555                 break;
 556             } else if (size < (1000 * base) || i == (NB_SUFFIXES - 1)) {
 557                 snprintf(buf, buf_size, "%" PRId64 "%c",
 558                          ((size + (base >> 1)) / base),
 559                          suffixes[i]);
 560                 break;
 561             }
 562             base = base * 1024;
 563         }
 564     }
 565     return buf;
 566 }
 567
 568 void bdrv_snapshot_dump(fprintf_function func_fprintf, void *f,
 569                         QEMUSnapshotInfo *sn)
 570 {
 571     char buf1[128], date_buf[128], clock_buf[128];
 572     struct tm tm;
 573     time_t ti;
 574     int64_t secs;
 575
 576     if (!sn) {
 577         func_fprintf(f,
 578                      "%-10s%-20s%7s%20s%15s",
 579                      "ID", "TAG", "VM SIZE", "DATE", "VM CLOCK");
 580     } else {
 581         ti = sn->date_sec;
 582         localtime_r(&ti, &tm);
 583         strftime(date_buf, sizeof(date_buf),
 584                  "%Y-%m-%d %H:%M:%S", &tm);
 585         secs = sn->vm_clock_nsec / 1000000000;
 586         snprintf(clock_buf, sizeof(clock_buf),
 587                  "%02d:%02d:%02d.%03d",
 588                  (int)(secs / 3600),
 589                  (int)((secs / 60) % 60),
 590                  (int)(secs % 60),
 591                  (int)((sn->vm_clock_nsec / 1000000) % 1000));
 592         func_fprintf(f,
 593                      "%-10s%-20s%7s%20s%15s",
 594                      sn->id_str, sn->name,
 595                      get_human_readable_size(buf1, sizeof(buf1),
 596                                              sn->vm_state_size),
 597                      date_buf,
 598                      clock_buf);
 599     }
 600 }
 601
 602 static void dump_qdict(fprintf_function func_fprintf, void *f, int indentation,
 603                        QDict *dict);
 604 static void dump_qlist(fprintf_function func_fprintf, void *f, int indentation,
 605                        QList *list);
 606
 607 static void dump_qobject(fprintf_function func_fprintf, void *f,
 608                          int comp_indent, QObject *obj)
 609 {
 610     switch (qobject_type(obj)) {
 611         case QTYPE_QINT: {
 612             QInt *value = qobject_to_qint(obj);
 613             func_fprintf(f, "%" PRId64, qint_get_int(value));
 614             break;
 615         }
 616         case QTYPE_QSTRING: {
 617             QString *value = qobject_to_qstring(obj);
 618             func_fprintf(f, "%s", qstring_get_str(value));
 619             break;
 620         }
 621         case QTYPE_QDICT: {
 622             QDict *value = qobject_to_qdict(obj);
 623             dump_qdict(func_fprintf, f, comp_indent, value);
 624             break;
 625         }
 626         case QTYPE_QLIST: {
 627             QList *value = qobject_to_qlist(obj);
 628             dump_qlist(func_fprintf, f, comp_indent, value);
 629             break;
 630         }
 631         case QTYPE_QFLOAT: {
 632             QFloat *value = qobject_to_qfloat(obj);
 633             func_fprintf(f, "%g", qfloat_get_double(value));
 634             break;
 635         }
 636         case QTYPE_QBOOL: {
 637             QBool *value = qobject_to_qbool(obj);
 638             func_fprintf(f, "%s", qbool_get_bool(value) ? "true" : "false");
 639             break;
 640         }
 641         default:
 642             abort();
 643     }
 644 }
 645
 646 static void dump_qlist(fprintf_function func_fprintf, void *f, int indentation,
 647                        QList *list)
 648 {
 649     const QListEntry *entry;
 650     int i = 0;
 651
 652     for (entry = qlist_first(list); entry; entry = qlist_next(entry), i++) {
 653         QType type = qobject_type(entry->value);
 654         bool composite = (type == QTYPE_QDICT || type == QTYPE_QLIST);
 655         const char *format = composite ? "%*s[%i]:\n" : "%*s[%i]: ";
 656
 657         func_fprintf(f, format, indentation * 4, "", i);
 658         dump_qobject(func_fprintf, f, indentation + 1, entry->value);
 659         if (!composite) {
 660             func_fprintf(f, "\n");
 661         }
 662     }
 663 }
 664
 665 static void dump_qdict(fprintf_function func_fprintf, void *f, int indentation,
 666                        QDict *dict)
 667 {
 668     const QDictEntry *entry;
 669
 670     for (entry = qdict_first(dict); entry; entry = qdict_next(dict, entry)) {
 671         QType type = qobject_type(entry->value);
 672         bool composite = (type == QTYPE_QDICT || type == QTYPE_QLIST);
 673         const char *format = composite ? "%*s%s:\n" : "%*s%s: ";
 674         char key[strlen(entry->key) + 1];
 675         int i;
 676
 677         /* replace dashes with spaces in key (variable) names */
 678         for (i = 0; entry->key[i]; i++) {
 679             key[i] = entry->key[i] == '-' ? ' ' : entry->key[i];
 680         }
 681         key[i] = 0;
 682
 683         func_fprintf(f, format, indentation * 4, "", key);
 684         dump_qobject(func_fprintf, f, indentation + 1, entry->value);
 685         if (!composite) {
 686             func_fprintf(f, "\n");
 687         }
 688     }
 689 }
 690
 691 void bdrv_image_info_specific_dump(fprintf_function func_fprintf, void *f,
 692                                    ImageInfoSpecific *info_spec)
 693 {
 694     QmpOutputVisitor *ov = qmp_output_visitor_new();
 695     QObject *obj, *data;
 696
 697     visit_type_ImageInfoSpecific(qmp_output_get_visitor(ov), NULL, &info_spec,
 698                                  &error_abort);
 699     obj = qmp_output_get_qobject(ov);
 700     assert(qobject_type(obj) == QTYPE_QDICT);
 701     data = qdict_get(qobject_to_qdict(obj), "data");
 702     dump_qobject(func_fprintf, f, 1, data);
 703     qmp_output_visitor_cleanup(ov);
 704 }
 705
 706 void bdrv_image_info_dump(fprintf_function func_fprintf, void *f,
 707                           ImageInfo *info)
 708 {
 709     char size_buf[128], dsize_buf[128];
 710     if (!info->has_actual_size) {
 711         snprintf(dsize_buf, sizeof(dsize_buf), "unavailable");
 712     } else {
 713         get_human_readable_size(dsize_buf, sizeof(dsize_buf),
 714                                 info->actual_size);
 715     }
 716     get_human_readable_size(size_buf, sizeof(size_buf), info->virtual_size);
 717     func_fprintf(f,
 718                  "image: %s\n"
 719                  "file format: %s\n"
 720                  "virtual size: %s (%" PRId64 " bytes)\n"
 721                  "disk size: %s\n",
 722                  info->filename, info->format, size_buf,
 723                  info->virtual_size,
 724                  dsize_buf);
 725
 726     if (info->has_encrypted && info->encrypted) {
 727         func_fprintf(f, "encrypted: yes\n");
 728     }
 729
 730     if (info->has_cluster_size) {
 731         func_fprintf(f, "cluster_size: %" PRId64 "\n",
 732                        info->cluster_size);
 733     }
 734
 735     if (info->has_dirty_flag && info->dirty_flag) {
 736         func_fprintf(f, "cleanly shut down: no\n");
 737     }
 738
 739     if (info->has_backing_filename) {
 740         func_fprintf(f, "backing file: %s", info->backing_filename);
 741         if (!info->has_full_backing_filename) {
 742             func_fprintf(f, " (cannot determine actual path)");
 743         } else if (strcmp(info->backing_filename,
 744                           info->full_backing_filename) != 0) {
 745             func_fprintf(f, " (actual path: %s)", info->full_backing_filename);
 746         }
 747         func_fprintf(f, "\n");
 748         if (info->has_backing_filename_format) {
 749             func_fprintf(f, "backing file format: %s\n",
 750                          info->backing_filename_format);
 751         }
 752     }
 753
 754     if (info->has_snapshots) {
 755         SnapshotInfoList *elem;
 756
 757         func_fprintf(f, "Snapshot list:\n");
 758         bdrv_snapshot_dump(func_fprintf, f, NULL);
 759         func_fprintf(f, "\n");
 760
 761         /* Ideally bdrv_snapshot_dump() would operate on SnapshotInfoList but
 762          * we convert to the block layer's native QEMUSnapshotInfo for now.
 763          */
 764         for (elem = info->snapshots; elem; elem = elem->next) {
 765             QEMUSnapshotInfo sn = {
 766                 .vm_state_size = elem->value->vm_state_size,
 767                 .date_sec = elem->value->date_sec,
 768                 .date_nsec = elem->value->date_nsec,
 769                 .vm_clock_nsec = elem->value->vm_clock_sec * 1000000000ULL +
 770                                  elem->value->vm_clock_nsec,
 771             };
 772
 773             pstrcpy(sn.id_str, sizeof(sn.id_str), elem->value->id);
 774             pstrcpy(sn.name, sizeof(sn.name), elem->value->name);
 775             bdrv_snapshot_dump(func_fprintf, f, &sn);
 776             func_fprintf(f, "\n");
 777         }
 778     }
 779
 780     if (info->has_format_specific) {
 781         func_fprintf(f, "Format specific information:\n");
 782         bdrv_image_info_specific_dump(func_fprintf, f, info->format_specific);
 783     }
 784 }