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