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