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 #ifdef __linux__ 33 #include <linux/fs.h> 34 #include <sys/ioctl.h> 35 #ifndef FS_NOCOW_FL 36 #define FS_NOCOW_FL 0x00800000 /* Do not cow file */ 37 #endif 38 #endif 39 40 BlockDeviceInfo *bdrv_block_device_info(BlockDriverState *bs) 41 { 42 BlockDeviceInfo *info = g_malloc0(sizeof(*info)); 43 44 info->file = g_strdup(bs->filename); 45 info->ro = bs->read_only; 46 info->drv = g_strdup(bs->drv->format_name); 47 info->encrypted = bs->encrypted; 48 info->encryption_key_missing = bdrv_key_required(bs); 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 char backing_filename2[1024]; 179 BlockDriverInfo bdi; 180 int ret; 181 Error *err = NULL; 182 ImageInfo *info; 183 #ifdef __linux__ 184 int fd, attr; 185 #endif 186 187 size = bdrv_getlength(bs); 188 if (size < 0) { 189 error_setg_errno(errp, -size, "Can't get size of device '%s'", 190 bdrv_get_device_name(bs)); 191 return; 192 } 193 194 info = g_new0(ImageInfo, 1); 195 info->filename = g_strdup(bs->filename); 196 info->format = g_strdup(bdrv_get_format_name(bs)); 197 info->virtual_size = size; 198 info->actual_size = bdrv_get_allocated_file_size(bs); 199 info->has_actual_size = info->actual_size >= 0; 200 if (bdrv_is_encrypted(bs)) { 201 info->encrypted = true; 202 info->has_encrypted = true; 203 } 204 if (bdrv_get_info(bs, &bdi) >= 0) { 205 if (bdi.cluster_size != 0) { 206 info->cluster_size = bdi.cluster_size; 207 info->has_cluster_size = true; 208 } 209 info->dirty_flag = bdi.is_dirty; 210 info->has_dirty_flag = true; 211 } 212 info->format_specific = bdrv_get_specific_info(bs); 213 info->has_format_specific = info->format_specific != NULL; 214 215 #ifdef __linux__ 216 /* get NOCOW info */ 217 fd = qemu_open(bs->filename, O_RDONLY | O_NONBLOCK); 218 if (fd >= 0) { 219 if (ioctl(fd, FS_IOC_GETFLAGS, &attr) == 0 && (attr & FS_NOCOW_FL)) { 220 info->has_nocow = true; 221 info->nocow = true; 222 } 223 qemu_close(fd); 224 } 225 #endif 226 227 backing_filename = bs->backing_file; 228 if (backing_filename[0] != '\0') { 229 info->backing_filename = g_strdup(backing_filename); 230 info->has_backing_filename = true; 231 bdrv_get_full_backing_filename(bs, backing_filename2, 232 sizeof(backing_filename2)); 233 234 if (strcmp(backing_filename, backing_filename2) != 0) { 235 info->full_backing_filename = 236 g_strdup(backing_filename2); 237 info->has_full_backing_filename = true; 238 } 239 240 if (bs->backing_format[0]) { 241 info->backing_filename_format = g_strdup(bs->backing_format); 242 info->has_backing_filename_format = true; 243 } 244 } 245 246 ret = bdrv_query_snapshot_info_list(bs, &info->snapshots, &err); 247 switch (ret) { 248 case 0: 249 if (info->snapshots) { 250 info->has_snapshots = true; 251 } 252 break; 253 /* recoverable error */ 254 case -ENOMEDIUM: 255 case -ENOTSUP: 256 error_free(err); 257 break; 258 default: 259 error_propagate(errp, err); 260 qapi_free_ImageInfo(info); 261 return; 262 } 263 264 *p_info = info; 265 } 266 267 /* @p_info will be set only on success. */ 268 static void bdrv_query_info(BlockBackend *blk, BlockInfo **p_info, 269 Error **errp) 270 { 271 BlockInfo *info = g_malloc0(sizeof(*info)); 272 BlockDriverState *bs = blk_bs(blk); 273 BlockDriverState *bs0; 274 ImageInfo **p_image_info; 275 Error *local_err = NULL; 276 info->device = g_strdup(blk_name(blk)); 277 info->type = g_strdup("unknown"); 278 info->locked = blk_dev_is_medium_locked(blk); 279 info->removable = blk_dev_has_removable_media(blk); 280 281 if (blk_dev_has_removable_media(blk)) { 282 info->has_tray_open = true; 283 info->tray_open = blk_dev_is_tray_open(blk); 284 } 285 286 if (bdrv_iostatus_is_enabled(bs)) { 287 info->has_io_status = true; 288 info->io_status = bs->iostatus; 289 } 290 291 if (!QLIST_EMPTY(&bs->dirty_bitmaps)) { 292 info->has_dirty_bitmaps = true; 293 info->dirty_bitmaps = bdrv_query_dirty_bitmaps(bs); 294 } 295 296 if (bs->drv) { 297 info->has_inserted = true; 298 info->inserted = bdrv_block_device_info(bs); 299 300 bs0 = bs; 301 p_image_info = &info->inserted->image; 302 while (1) { 303 bdrv_query_image_info(bs0, p_image_info, &local_err); 304 if (local_err) { 305 error_propagate(errp, local_err); 306 goto err; 307 } 308 if (bs0->drv && bs0->backing_hd) { 309 bs0 = bs0->backing_hd; 310 (*p_image_info)->has_backing_image = true; 311 p_image_info = &((*p_image_info)->backing_image); 312 } else { 313 break; 314 } 315 } 316 } 317 318 *p_info = info; 319 return; 320 321 err: 322 qapi_free_BlockInfo(info); 323 } 324 325 static BlockStats *bdrv_query_stats(const BlockDriverState *bs) 326 { 327 BlockStats *s; 328 329 s = g_malloc0(sizeof(*s)); 330 331 if (bdrv_get_device_name(bs)[0]) { 332 s->has_device = true; 333 s->device = g_strdup(bdrv_get_device_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->wr_highest_offset = 342 bs->stats.wr_highest_sector * BDRV_SECTOR_SIZE; 343 s->stats->flush_operations = bs->stats.nr_ops[BLOCK_ACCT_FLUSH]; 344 s->stats->wr_total_time_ns = bs->stats.total_time_ns[BLOCK_ACCT_WRITE]; 345 s->stats->rd_total_time_ns = bs->stats.total_time_ns[BLOCK_ACCT_READ]; 346 s->stats->flush_total_time_ns = bs->stats.total_time_ns[BLOCK_ACCT_FLUSH]; 347 348 if (bs->file) { 349 s->has_parent = true; 350 s->parent = bdrv_query_stats(bs->file); 351 } 352 353 if (bs->backing_hd) { 354 s->has_backing = true; 355 s->backing = bdrv_query_stats(bs->backing_hd); 356 } 357 358 return s; 359 } 360 361 BlockInfoList *qmp_query_block(Error **errp) 362 { 363 BlockInfoList *head = NULL, **p_next = &head; 364 BlockBackend *blk; 365 Error *local_err = NULL; 366 367 for (blk = blk_next(NULL); blk; blk = blk_next(blk)) { 368 BlockInfoList *info = g_malloc0(sizeof(*info)); 369 bdrv_query_info(blk, &info->value, &local_err); 370 if (local_err) { 371 error_propagate(errp, local_err); 372 goto err; 373 } 374 375 *p_next = info; 376 p_next = &info->next; 377 } 378 379 return head; 380 381 err: 382 qapi_free_BlockInfoList(head); 383 return NULL; 384 } 385 386 BlockStatsList *qmp_query_blockstats(Error **errp) 387 { 388 BlockStatsList *head = NULL, **p_next = &head; 389 BlockDriverState *bs = NULL; 390 391 while ((bs = bdrv_next(bs))) { 392 BlockStatsList *info = g_malloc0(sizeof(*info)); 393 AioContext *ctx = bdrv_get_aio_context(bs); 394 395 aio_context_acquire(ctx); 396 info->value = bdrv_query_stats(bs); 397 aio_context_release(ctx); 398 399 *p_next = info; 400 p_next = &info->next; 401 } 402 403 return head; 404 } 405 406 #define NB_SUFFIXES 4 407 408 static char *get_human_readable_size(char *buf, int buf_size, int64_t size) 409 { 410 static const char suffixes[NB_SUFFIXES] = "KMGT"; 411 int64_t base; 412 int i; 413 414 if (size <= 999) { 415 snprintf(buf, buf_size, "%" PRId64, size); 416 } else { 417 base = 1024; 418 for (i = 0; i < NB_SUFFIXES; i++) { 419 if (size < (10 * base)) { 420 snprintf(buf, buf_size, "%0.1f%c", 421 (double)size / base, 422 suffixes[i]); 423 break; 424 } else if (size < (1000 * base) || i == (NB_SUFFIXES - 1)) { 425 snprintf(buf, buf_size, "%" PRId64 "%c", 426 ((size + (base >> 1)) / base), 427 suffixes[i]); 428 break; 429 } 430 base = base * 1024; 431 } 432 } 433 return buf; 434 } 435 436 void bdrv_snapshot_dump(fprintf_function func_fprintf, void *f, 437 QEMUSnapshotInfo *sn) 438 { 439 char buf1[128], date_buf[128], clock_buf[128]; 440 struct tm tm; 441 time_t ti; 442 int64_t secs; 443 444 if (!sn) { 445 func_fprintf(f, 446 "%-10s%-20s%7s%20s%15s", 447 "ID", "TAG", "VM SIZE", "DATE", "VM CLOCK"); 448 } else { 449 ti = sn->date_sec; 450 localtime_r(&ti, &tm); 451 strftime(date_buf, sizeof(date_buf), 452 "%Y-%m-%d %H:%M:%S", &tm); 453 secs = sn->vm_clock_nsec / 1000000000; 454 snprintf(clock_buf, sizeof(clock_buf), 455 "%02d:%02d:%02d.%03d", 456 (int)(secs / 3600), 457 (int)((secs / 60) % 60), 458 (int)(secs % 60), 459 (int)((sn->vm_clock_nsec / 1000000) % 1000)); 460 func_fprintf(f, 461 "%-10s%-20s%7s%20s%15s", 462 sn->id_str, sn->name, 463 get_human_readable_size(buf1, sizeof(buf1), 464 sn->vm_state_size), 465 date_buf, 466 clock_buf); 467 } 468 } 469 470 static void dump_qdict(fprintf_function func_fprintf, void *f, int indentation, 471 QDict *dict); 472 static void dump_qlist(fprintf_function func_fprintf, void *f, int indentation, 473 QList *list); 474 475 static void dump_qobject(fprintf_function func_fprintf, void *f, 476 int comp_indent, QObject *obj) 477 { 478 switch (qobject_type(obj)) { 479 case QTYPE_QINT: { 480 QInt *value = qobject_to_qint(obj); 481 func_fprintf(f, "%" PRId64, qint_get_int(value)); 482 break; 483 } 484 case QTYPE_QSTRING: { 485 QString *value = qobject_to_qstring(obj); 486 func_fprintf(f, "%s", qstring_get_str(value)); 487 break; 488 } 489 case QTYPE_QDICT: { 490 QDict *value = qobject_to_qdict(obj); 491 dump_qdict(func_fprintf, f, comp_indent, value); 492 break; 493 } 494 case QTYPE_QLIST: { 495 QList *value = qobject_to_qlist(obj); 496 dump_qlist(func_fprintf, f, comp_indent, value); 497 break; 498 } 499 case QTYPE_QFLOAT: { 500 QFloat *value = qobject_to_qfloat(obj); 501 func_fprintf(f, "%g", qfloat_get_double(value)); 502 break; 503 } 504 case QTYPE_QBOOL: { 505 QBool *value = qobject_to_qbool(obj); 506 func_fprintf(f, "%s", qbool_get_int(value) ? "true" : "false"); 507 break; 508 } 509 case QTYPE_QERROR: { 510 QString *value = qerror_human((QError *)obj); 511 func_fprintf(f, "%s", qstring_get_str(value)); 512 QDECREF(value); 513 break; 514 } 515 case QTYPE_NONE: 516 break; 517 case QTYPE_MAX: 518 default: 519 abort(); 520 } 521 } 522 523 static void dump_qlist(fprintf_function func_fprintf, void *f, int indentation, 524 QList *list) 525 { 526 const QListEntry *entry; 527 int i = 0; 528 529 for (entry = qlist_first(list); entry; entry = qlist_next(entry), i++) { 530 qtype_code type = qobject_type(entry->value); 531 bool composite = (type == QTYPE_QDICT || type == QTYPE_QLIST); 532 const char *format = composite ? "%*s[%i]:\n" : "%*s[%i]: "; 533 534 func_fprintf(f, format, indentation * 4, "", i); 535 dump_qobject(func_fprintf, f, indentation + 1, entry->value); 536 if (!composite) { 537 func_fprintf(f, "\n"); 538 } 539 } 540 } 541 542 static void dump_qdict(fprintf_function func_fprintf, void *f, int indentation, 543 QDict *dict) 544 { 545 const QDictEntry *entry; 546 547 for (entry = qdict_first(dict); entry; entry = qdict_next(dict, entry)) { 548 qtype_code type = qobject_type(entry->value); 549 bool composite = (type == QTYPE_QDICT || type == QTYPE_QLIST); 550 const char *format = composite ? "%*s%s:\n" : "%*s%s: "; 551 char key[strlen(entry->key) + 1]; 552 int i; 553 554 /* replace dashes with spaces in key (variable) names */ 555 for (i = 0; entry->key[i]; i++) { 556 key[i] = entry->key[i] == '-' ? ' ' : entry->key[i]; 557 } 558 key[i] = 0; 559 560 func_fprintf(f, format, indentation * 4, "", key); 561 dump_qobject(func_fprintf, f, indentation + 1, entry->value); 562 if (!composite) { 563 func_fprintf(f, "\n"); 564 } 565 } 566 } 567 568 void bdrv_image_info_specific_dump(fprintf_function func_fprintf, void *f, 569 ImageInfoSpecific *info_spec) 570 { 571 QmpOutputVisitor *ov = qmp_output_visitor_new(); 572 QObject *obj, *data; 573 574 visit_type_ImageInfoSpecific(qmp_output_get_visitor(ov), &info_spec, NULL, 575 &error_abort); 576 obj = qmp_output_get_qobject(ov); 577 assert(qobject_type(obj) == QTYPE_QDICT); 578 data = qdict_get(qobject_to_qdict(obj), "data"); 579 dump_qobject(func_fprintf, f, 1, data); 580 qmp_output_visitor_cleanup(ov); 581 } 582 583 void bdrv_image_info_dump(fprintf_function func_fprintf, void *f, 584 ImageInfo *info) 585 { 586 char size_buf[128], dsize_buf[128]; 587 if (!info->has_actual_size) { 588 snprintf(dsize_buf, sizeof(dsize_buf), "unavailable"); 589 } else { 590 get_human_readable_size(dsize_buf, sizeof(dsize_buf), 591 info->actual_size); 592 } 593 get_human_readable_size(size_buf, sizeof(size_buf), info->virtual_size); 594 func_fprintf(f, 595 "image: %s\n" 596 "file format: %s\n" 597 "virtual size: %s (%" PRId64 " bytes)\n" 598 "disk size: %s\n", 599 info->filename, info->format, size_buf, 600 info->virtual_size, 601 dsize_buf); 602 603 if (info->has_encrypted && info->encrypted) { 604 func_fprintf(f, "encrypted: yes\n"); 605 } 606 607 if (info->has_cluster_size) { 608 func_fprintf(f, "cluster_size: %" PRId64 "\n", 609 info->cluster_size); 610 } 611 612 if (info->has_dirty_flag && info->dirty_flag) { 613 func_fprintf(f, "cleanly shut down: no\n"); 614 } 615 616 if (info->has_backing_filename) { 617 func_fprintf(f, "backing file: %s", info->backing_filename); 618 if (info->has_full_backing_filename) { 619 func_fprintf(f, " (actual path: %s)", info->full_backing_filename); 620 } 621 func_fprintf(f, "\n"); 622 if (info->has_backing_filename_format) { 623 func_fprintf(f, "backing file format: %s\n", 624 info->backing_filename_format); 625 } 626 } 627 628 if (info->has_snapshots) { 629 SnapshotInfoList *elem; 630 631 func_fprintf(f, "Snapshot list:\n"); 632 bdrv_snapshot_dump(func_fprintf, f, NULL); 633 func_fprintf(f, "\n"); 634 635 /* Ideally bdrv_snapshot_dump() would operate on SnapshotInfoList but 636 * we convert to the block layer's native QEMUSnapshotInfo for now. 637 */ 638 for (elem = info->snapshots; elem; elem = elem->next) { 639 QEMUSnapshotInfo sn = { 640 .vm_state_size = elem->value->vm_state_size, 641 .date_sec = elem->value->date_sec, 642 .date_nsec = elem->value->date_nsec, 643 .vm_clock_nsec = elem->value->vm_clock_sec * 1000000000ULL + 644 elem->value->vm_clock_nsec, 645 }; 646 647 pstrcpy(sn.id_str, sizeof(sn.id_str), elem->value->id); 648 pstrcpy(sn.name, sizeof(sn.name), elem->value->name); 649 bdrv_snapshot_dump(func_fprintf, f, &sn); 650 func_fprintf(f, "\n"); 651 } 652 } 653 654 if (info->has_format_specific) { 655 func_fprintf(f, "Format specific information:\n"); 656 bdrv_image_info_specific_dump(func_fprintf, f, info->format_specific); 657 } 658 659 if (info->has_nocow && info->nocow) { 660 func_fprintf(f, "NOCOW flag: set\n"); 661 } 662 } 663