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