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 "qemu-common.h" 27 #include "block/qapi.h" 28 #include "block/block_int.h" 29 #include "block/throttle-groups.h" 30 #include "block/write-threshold.h" 31 #include "qapi/error.h" 32 #include "qapi/qapi-commands-block-core.h" 33 #include "qapi/qobject-output-visitor.h" 34 #include "qapi/qapi-visit-block-core.h" 35 #include "qapi/qmp/qbool.h" 36 #include "qapi/qmp/qdict.h" 37 #include "qapi/qmp/qlist.h" 38 #include "qapi/qmp/qnum.h" 39 #include "qapi/qmp/qstring.h" 40 #include "qemu/qemu-print.h" 41 #include "sysemu/block-backend.h" 42 #include "qemu/cutils.h" 43 44 BlockDeviceInfo *bdrv_block_device_info(BlockBackend *blk, 45 BlockDriverState *bs, Error **errp) 46 { 47 ImageInfo **p_image_info; 48 BlockDriverState *bs0; 49 BlockDeviceInfo *info; 50 51 if (!bs->drv) { 52 error_setg(errp, "Block device %s is ejected", bs->node_name); 53 return NULL; 54 } 55 56 bdrv_refresh_filename(bs); 57 58 info = g_malloc0(sizeof(*info)); 59 info->file = g_strdup(bs->filename); 60 info->ro = bs->read_only; 61 info->drv = g_strdup(bs->drv->format_name); 62 info->encrypted = bs->encrypted; 63 info->encryption_key_missing = false; 64 65 info->cache = g_new(BlockdevCacheInfo, 1); 66 *info->cache = (BlockdevCacheInfo) { 67 .writeback = blk ? blk_enable_write_cache(blk) : true, 68 .direct = !!(bs->open_flags & BDRV_O_NOCACHE), 69 .no_flush = !!(bs->open_flags & BDRV_O_NO_FLUSH), 70 }; 71 72 if (bs->node_name[0]) { 73 info->has_node_name = true; 74 info->node_name = g_strdup(bs->node_name); 75 } 76 77 if (bs->backing_file[0]) { 78 info->has_backing_file = true; 79 info->backing_file = g_strdup(bs->backing_file); 80 } 81 82 if (!QLIST_EMPTY(&bs->dirty_bitmaps)) { 83 info->has_dirty_bitmaps = true; 84 info->dirty_bitmaps = bdrv_query_dirty_bitmaps(bs); 85 } 86 87 info->detect_zeroes = bs->detect_zeroes; 88 89 if (blk && blk_get_public(blk)->throttle_group_member.throttle_state) { 90 ThrottleConfig cfg; 91 BlockBackendPublic *blkp = blk_get_public(blk); 92 93 throttle_group_get_config(&blkp->throttle_group_member, &cfg); 94 95 info->bps = cfg.buckets[THROTTLE_BPS_TOTAL].avg; 96 info->bps_rd = cfg.buckets[THROTTLE_BPS_READ].avg; 97 info->bps_wr = cfg.buckets[THROTTLE_BPS_WRITE].avg; 98 99 info->iops = cfg.buckets[THROTTLE_OPS_TOTAL].avg; 100 info->iops_rd = cfg.buckets[THROTTLE_OPS_READ].avg; 101 info->iops_wr = cfg.buckets[THROTTLE_OPS_WRITE].avg; 102 103 info->has_bps_max = cfg.buckets[THROTTLE_BPS_TOTAL].max; 104 info->bps_max = cfg.buckets[THROTTLE_BPS_TOTAL].max; 105 info->has_bps_rd_max = cfg.buckets[THROTTLE_BPS_READ].max; 106 info->bps_rd_max = cfg.buckets[THROTTLE_BPS_READ].max; 107 info->has_bps_wr_max = cfg.buckets[THROTTLE_BPS_WRITE].max; 108 info->bps_wr_max = cfg.buckets[THROTTLE_BPS_WRITE].max; 109 110 info->has_iops_max = cfg.buckets[THROTTLE_OPS_TOTAL].max; 111 info->iops_max = cfg.buckets[THROTTLE_OPS_TOTAL].max; 112 info->has_iops_rd_max = cfg.buckets[THROTTLE_OPS_READ].max; 113 info->iops_rd_max = cfg.buckets[THROTTLE_OPS_READ].max; 114 info->has_iops_wr_max = cfg.buckets[THROTTLE_OPS_WRITE].max; 115 info->iops_wr_max = cfg.buckets[THROTTLE_OPS_WRITE].max; 116 117 info->has_bps_max_length = info->has_bps_max; 118 info->bps_max_length = 119 cfg.buckets[THROTTLE_BPS_TOTAL].burst_length; 120 info->has_bps_rd_max_length = info->has_bps_rd_max; 121 info->bps_rd_max_length = 122 cfg.buckets[THROTTLE_BPS_READ].burst_length; 123 info->has_bps_wr_max_length = info->has_bps_wr_max; 124 info->bps_wr_max_length = 125 cfg.buckets[THROTTLE_BPS_WRITE].burst_length; 126 127 info->has_iops_max_length = info->has_iops_max; 128 info->iops_max_length = 129 cfg.buckets[THROTTLE_OPS_TOTAL].burst_length; 130 info->has_iops_rd_max_length = info->has_iops_rd_max; 131 info->iops_rd_max_length = 132 cfg.buckets[THROTTLE_OPS_READ].burst_length; 133 info->has_iops_wr_max_length = info->has_iops_wr_max; 134 info->iops_wr_max_length = 135 cfg.buckets[THROTTLE_OPS_WRITE].burst_length; 136 137 info->has_iops_size = cfg.op_size; 138 info->iops_size = cfg.op_size; 139 140 info->has_group = true; 141 info->group = 142 g_strdup(throttle_group_get_name(&blkp->throttle_group_member)); 143 } 144 145 info->write_threshold = bdrv_write_threshold_get(bs); 146 147 bs0 = bs; 148 p_image_info = &info->image; 149 info->backing_file_depth = 0; 150 while (1) { 151 Error *local_err = NULL; 152 bdrv_query_image_info(bs0, p_image_info, &local_err); 153 if (local_err) { 154 error_propagate(errp, local_err); 155 qapi_free_BlockDeviceInfo(info); 156 return NULL; 157 } 158 159 if (bs0->drv && bs0->backing) { 160 info->backing_file_depth++; 161 bs0 = bs0->backing->bs; 162 (*p_image_info)->has_backing_image = true; 163 p_image_info = &((*p_image_info)->backing_image); 164 } else { 165 break; 166 } 167 168 /* Skip automatically inserted nodes that the user isn't aware of for 169 * query-block (blk != NULL), but not for query-named-block-nodes */ 170 while (blk && bs0->drv && bs0->implicit) { 171 bs0 = backing_bs(bs0); 172 assert(bs0); 173 } 174 } 175 176 return info; 177 } 178 179 /* 180 * Returns 0 on success, with *p_list either set to describe snapshot 181 * information, or NULL because there are no snapshots. Returns -errno on 182 * error, with *p_list untouched. 183 */ 184 int bdrv_query_snapshot_info_list(BlockDriverState *bs, 185 SnapshotInfoList **p_list, 186 Error **errp) 187 { 188 int i, sn_count; 189 QEMUSnapshotInfo *sn_tab = NULL; 190 SnapshotInfoList *info_list, *cur_item = NULL, *head = NULL; 191 SnapshotInfo *info; 192 193 sn_count = bdrv_snapshot_list(bs, &sn_tab); 194 if (sn_count < 0) { 195 const char *dev = bdrv_get_device_name(bs); 196 switch (sn_count) { 197 case -ENOMEDIUM: 198 error_setg(errp, "Device '%s' is not inserted", dev); 199 break; 200 case -ENOTSUP: 201 error_setg(errp, 202 "Device '%s' does not support internal snapshots", 203 dev); 204 break; 205 default: 206 error_setg_errno(errp, -sn_count, 207 "Can't list snapshots of device '%s'", dev); 208 break; 209 } 210 return sn_count; 211 } 212 213 for (i = 0; i < sn_count; i++) { 214 info = g_new0(SnapshotInfo, 1); 215 info->id = g_strdup(sn_tab[i].id_str); 216 info->name = g_strdup(sn_tab[i].name); 217 info->vm_state_size = sn_tab[i].vm_state_size; 218 info->date_sec = sn_tab[i].date_sec; 219 info->date_nsec = sn_tab[i].date_nsec; 220 info->vm_clock_sec = sn_tab[i].vm_clock_nsec / 1000000000; 221 info->vm_clock_nsec = sn_tab[i].vm_clock_nsec % 1000000000; 222 223 info_list = g_new0(SnapshotInfoList, 1); 224 info_list->value = info; 225 226 /* XXX: waiting for the qapi to support qemu-queue.h types */ 227 if (!cur_item) { 228 head = cur_item = info_list; 229 } else { 230 cur_item->next = info_list; 231 cur_item = info_list; 232 } 233 234 } 235 236 g_free(sn_tab); 237 *p_list = head; 238 return 0; 239 } 240 241 /** 242 * bdrv_query_image_info: 243 * @bs: block device to examine 244 * @p_info: location to store image information 245 * @errp: location to store error information 246 * 247 * Store "flat" image information in @p_info. 248 * 249 * "Flat" means it does *not* query backing image information, 250 * i.e. (*pinfo)->has_backing_image will be set to false and 251 * (*pinfo)->backing_image to NULL even when the image does in fact have 252 * a backing image. 253 * 254 * @p_info will be set only on success. On error, store error in @errp. 255 */ 256 void bdrv_query_image_info(BlockDriverState *bs, 257 ImageInfo **p_info, 258 Error **errp) 259 { 260 int64_t size; 261 const char *backing_filename; 262 BlockDriverInfo bdi; 263 int ret; 264 Error *err = NULL; 265 ImageInfo *info; 266 267 aio_context_acquire(bdrv_get_aio_context(bs)); 268 269 size = bdrv_getlength(bs); 270 if (size < 0) { 271 error_setg_errno(errp, -size, "Can't get image size '%s'", 272 bs->exact_filename); 273 goto out; 274 } 275 276 bdrv_refresh_filename(bs); 277 278 info = g_new0(ImageInfo, 1); 279 info->filename = g_strdup(bs->filename); 280 info->format = g_strdup(bdrv_get_format_name(bs)); 281 info->virtual_size = size; 282 info->actual_size = bdrv_get_allocated_file_size(bs); 283 info->has_actual_size = info->actual_size >= 0; 284 if (bdrv_is_encrypted(bs)) { 285 info->encrypted = true; 286 info->has_encrypted = true; 287 } 288 if (bdrv_get_info(bs, &bdi) >= 0) { 289 if (bdi.cluster_size != 0) { 290 info->cluster_size = bdi.cluster_size; 291 info->has_cluster_size = true; 292 } 293 info->dirty_flag = bdi.is_dirty; 294 info->has_dirty_flag = true; 295 } 296 info->format_specific = bdrv_get_specific_info(bs, &err); 297 if (err) { 298 error_propagate(errp, err); 299 qapi_free_ImageInfo(info); 300 goto out; 301 } 302 info->has_format_specific = info->format_specific != NULL; 303 304 backing_filename = bs->backing_file; 305 if (backing_filename[0] != '\0') { 306 char *backing_filename2; 307 info->backing_filename = g_strdup(backing_filename); 308 info->has_backing_filename = true; 309 backing_filename2 = bdrv_get_full_backing_filename(bs, NULL); 310 311 /* Always report the full_backing_filename if present, even if it's the 312 * same as backing_filename. That they are same is useful info. */ 313 if (backing_filename2) { 314 info->full_backing_filename = g_strdup(backing_filename2); 315 info->has_full_backing_filename = true; 316 } 317 318 if (bs->backing_format[0]) { 319 info->backing_filename_format = g_strdup(bs->backing_format); 320 info->has_backing_filename_format = true; 321 } 322 g_free(backing_filename2); 323 } 324 325 ret = bdrv_query_snapshot_info_list(bs, &info->snapshots, &err); 326 switch (ret) { 327 case 0: 328 if (info->snapshots) { 329 info->has_snapshots = true; 330 } 331 break; 332 /* recoverable error */ 333 case -ENOMEDIUM: 334 case -ENOTSUP: 335 error_free(err); 336 break; 337 default: 338 error_propagate(errp, err); 339 qapi_free_ImageInfo(info); 340 goto out; 341 } 342 343 *p_info = info; 344 345 out: 346 aio_context_release(bdrv_get_aio_context(bs)); 347 } 348 349 /* @p_info will be set only on success. */ 350 static void bdrv_query_info(BlockBackend *blk, BlockInfo **p_info, 351 Error **errp) 352 { 353 BlockInfo *info = g_malloc0(sizeof(*info)); 354 BlockDriverState *bs = blk_bs(blk); 355 char *qdev; 356 357 /* Skip automatically inserted nodes that the user isn't aware of */ 358 while (bs && bs->drv && bs->implicit) { 359 bs = backing_bs(bs); 360 } 361 362 info->device = g_strdup(blk_name(blk)); 363 info->type = g_strdup("unknown"); 364 info->locked = blk_dev_is_medium_locked(blk); 365 info->removable = blk_dev_has_removable_media(blk); 366 367 qdev = blk_get_attached_dev_id(blk); 368 if (qdev && *qdev) { 369 info->has_qdev = true; 370 info->qdev = qdev; 371 } else { 372 g_free(qdev); 373 } 374 375 if (blk_dev_has_tray(blk)) { 376 info->has_tray_open = true; 377 info->tray_open = blk_dev_is_tray_open(blk); 378 } 379 380 if (blk_iostatus_is_enabled(blk)) { 381 info->has_io_status = true; 382 info->io_status = blk_iostatus(blk); 383 } 384 385 if (bs && !QLIST_EMPTY(&bs->dirty_bitmaps)) { 386 info->has_dirty_bitmaps = true; 387 info->dirty_bitmaps = bdrv_query_dirty_bitmaps(bs); 388 } 389 390 if (bs && bs->drv) { 391 info->has_inserted = true; 392 info->inserted = bdrv_block_device_info(blk, bs, errp); 393 if (info->inserted == NULL) { 394 goto err; 395 } 396 } 397 398 *p_info = info; 399 return; 400 401 err: 402 qapi_free_BlockInfo(info); 403 } 404 405 static uint64List *uint64_list(uint64_t *list, int size) 406 { 407 int i; 408 uint64List *out_list = NULL; 409 uint64List **pout_list = &out_list; 410 411 for (i = 0; i < size; i++) { 412 uint64List *entry = g_new(uint64List, 1); 413 entry->value = list[i]; 414 *pout_list = entry; 415 pout_list = &entry->next; 416 } 417 418 *pout_list = NULL; 419 420 return out_list; 421 } 422 423 static void bdrv_latency_histogram_stats(BlockLatencyHistogram *hist, 424 bool *not_null, 425 BlockLatencyHistogramInfo **info) 426 { 427 *not_null = hist->bins != NULL; 428 if (*not_null) { 429 *info = g_new0(BlockLatencyHistogramInfo, 1); 430 431 (*info)->boundaries = uint64_list(hist->boundaries, hist->nbins - 1); 432 (*info)->bins = uint64_list(hist->bins, hist->nbins); 433 } 434 } 435 436 static void bdrv_query_blk_stats(BlockDeviceStats *ds, BlockBackend *blk) 437 { 438 BlockAcctStats *stats = blk_get_stats(blk); 439 BlockAcctTimedStats *ts = NULL; 440 441 ds->rd_bytes = stats->nr_bytes[BLOCK_ACCT_READ]; 442 ds->wr_bytes = stats->nr_bytes[BLOCK_ACCT_WRITE]; 443 ds->rd_operations = stats->nr_ops[BLOCK_ACCT_READ]; 444 ds->wr_operations = stats->nr_ops[BLOCK_ACCT_WRITE]; 445 446 ds->failed_rd_operations = stats->failed_ops[BLOCK_ACCT_READ]; 447 ds->failed_wr_operations = stats->failed_ops[BLOCK_ACCT_WRITE]; 448 ds->failed_flush_operations = stats->failed_ops[BLOCK_ACCT_FLUSH]; 449 450 ds->invalid_rd_operations = stats->invalid_ops[BLOCK_ACCT_READ]; 451 ds->invalid_wr_operations = stats->invalid_ops[BLOCK_ACCT_WRITE]; 452 ds->invalid_flush_operations = 453 stats->invalid_ops[BLOCK_ACCT_FLUSH]; 454 455 ds->rd_merged = stats->merged[BLOCK_ACCT_READ]; 456 ds->wr_merged = stats->merged[BLOCK_ACCT_WRITE]; 457 ds->flush_operations = stats->nr_ops[BLOCK_ACCT_FLUSH]; 458 ds->wr_total_time_ns = stats->total_time_ns[BLOCK_ACCT_WRITE]; 459 ds->rd_total_time_ns = stats->total_time_ns[BLOCK_ACCT_READ]; 460 ds->flush_total_time_ns = stats->total_time_ns[BLOCK_ACCT_FLUSH]; 461 462 ds->has_idle_time_ns = stats->last_access_time_ns > 0; 463 if (ds->has_idle_time_ns) { 464 ds->idle_time_ns = block_acct_idle_time_ns(stats); 465 } 466 467 ds->account_invalid = stats->account_invalid; 468 ds->account_failed = stats->account_failed; 469 470 while ((ts = block_acct_interval_next(stats, ts))) { 471 BlockDeviceTimedStatsList *timed_stats = 472 g_malloc0(sizeof(*timed_stats)); 473 BlockDeviceTimedStats *dev_stats = g_malloc0(sizeof(*dev_stats)); 474 timed_stats->next = ds->timed_stats; 475 timed_stats->value = dev_stats; 476 ds->timed_stats = timed_stats; 477 478 TimedAverage *rd = &ts->latency[BLOCK_ACCT_READ]; 479 TimedAverage *wr = &ts->latency[BLOCK_ACCT_WRITE]; 480 TimedAverage *fl = &ts->latency[BLOCK_ACCT_FLUSH]; 481 482 dev_stats->interval_length = ts->interval_length; 483 484 dev_stats->min_rd_latency_ns = timed_average_min(rd); 485 dev_stats->max_rd_latency_ns = timed_average_max(rd); 486 dev_stats->avg_rd_latency_ns = timed_average_avg(rd); 487 488 dev_stats->min_wr_latency_ns = timed_average_min(wr); 489 dev_stats->max_wr_latency_ns = timed_average_max(wr); 490 dev_stats->avg_wr_latency_ns = timed_average_avg(wr); 491 492 dev_stats->min_flush_latency_ns = timed_average_min(fl); 493 dev_stats->max_flush_latency_ns = timed_average_max(fl); 494 dev_stats->avg_flush_latency_ns = timed_average_avg(fl); 495 496 dev_stats->avg_rd_queue_depth = 497 block_acct_queue_depth(ts, BLOCK_ACCT_READ); 498 dev_stats->avg_wr_queue_depth = 499 block_acct_queue_depth(ts, BLOCK_ACCT_WRITE); 500 } 501 502 bdrv_latency_histogram_stats(&stats->latency_histogram[BLOCK_ACCT_READ], 503 &ds->has_rd_latency_histogram, 504 &ds->rd_latency_histogram); 505 bdrv_latency_histogram_stats(&stats->latency_histogram[BLOCK_ACCT_WRITE], 506 &ds->has_wr_latency_histogram, 507 &ds->wr_latency_histogram); 508 bdrv_latency_histogram_stats(&stats->latency_histogram[BLOCK_ACCT_FLUSH], 509 &ds->has_flush_latency_histogram, 510 &ds->flush_latency_histogram); 511 } 512 513 static BlockStats *bdrv_query_bds_stats(BlockDriverState *bs, 514 bool blk_level) 515 { 516 BlockStats *s = NULL; 517 518 s = g_malloc0(sizeof(*s)); 519 s->stats = g_malloc0(sizeof(*s->stats)); 520 521 if (!bs) { 522 return s; 523 } 524 525 /* Skip automatically inserted nodes that the user isn't aware of in 526 * a BlockBackend-level command. Stay at the exact node for a node-level 527 * command. */ 528 while (blk_level && bs->drv && bs->implicit) { 529 bs = backing_bs(bs); 530 assert(bs); 531 } 532 533 if (bdrv_get_node_name(bs)[0]) { 534 s->has_node_name = true; 535 s->node_name = g_strdup(bdrv_get_node_name(bs)); 536 } 537 538 s->stats->wr_highest_offset = stat64_get(&bs->wr_highest_offset); 539 540 if (bs->file) { 541 s->has_parent = true; 542 s->parent = bdrv_query_bds_stats(bs->file->bs, blk_level); 543 } 544 545 if (blk_level && bs->backing) { 546 s->has_backing = true; 547 s->backing = bdrv_query_bds_stats(bs->backing->bs, blk_level); 548 } 549 550 return s; 551 } 552 553 BlockInfoList *qmp_query_block(Error **errp) 554 { 555 BlockInfoList *head = NULL, **p_next = &head; 556 BlockBackend *blk; 557 Error *local_err = NULL; 558 559 for (blk = blk_all_next(NULL); blk; blk = blk_all_next(blk)) { 560 BlockInfoList *info; 561 562 if (!*blk_name(blk) && !blk_get_attached_dev(blk)) { 563 continue; 564 } 565 566 info = g_malloc0(sizeof(*info)); 567 bdrv_query_info(blk, &info->value, &local_err); 568 if (local_err) { 569 error_propagate(errp, local_err); 570 g_free(info); 571 qapi_free_BlockInfoList(head); 572 return NULL; 573 } 574 575 *p_next = info; 576 p_next = &info->next; 577 } 578 579 return head; 580 } 581 582 BlockStatsList *qmp_query_blockstats(bool has_query_nodes, 583 bool query_nodes, 584 Error **errp) 585 { 586 BlockStatsList *head = NULL, **p_next = &head; 587 BlockBackend *blk; 588 BlockDriverState *bs; 589 590 /* Just to be safe if query_nodes is not always initialized */ 591 if (has_query_nodes && query_nodes) { 592 for (bs = bdrv_next_node(NULL); bs; bs = bdrv_next_node(bs)) { 593 BlockStatsList *info = g_malloc0(sizeof(*info)); 594 AioContext *ctx = bdrv_get_aio_context(bs); 595 596 aio_context_acquire(ctx); 597 info->value = bdrv_query_bds_stats(bs, false); 598 aio_context_release(ctx); 599 600 *p_next = info; 601 p_next = &info->next; 602 } 603 } else { 604 for (blk = blk_all_next(NULL); blk; blk = blk_all_next(blk)) { 605 BlockStatsList *info; 606 AioContext *ctx = blk_get_aio_context(blk); 607 BlockStats *s; 608 char *qdev; 609 610 if (!*blk_name(blk) && !blk_get_attached_dev(blk)) { 611 continue; 612 } 613 614 aio_context_acquire(ctx); 615 s = bdrv_query_bds_stats(blk_bs(blk), true); 616 s->has_device = true; 617 s->device = g_strdup(blk_name(blk)); 618 619 qdev = blk_get_attached_dev_id(blk); 620 if (qdev && *qdev) { 621 s->has_qdev = true; 622 s->qdev = qdev; 623 } else { 624 g_free(qdev); 625 } 626 627 bdrv_query_blk_stats(s->stats, blk); 628 aio_context_release(ctx); 629 630 info = g_malloc0(sizeof(*info)); 631 info->value = s; 632 *p_next = info; 633 p_next = &info->next; 634 } 635 } 636 637 return head; 638 } 639 640 void bdrv_snapshot_dump(QEMUSnapshotInfo *sn) 641 { 642 char date_buf[128], clock_buf[128]; 643 struct tm tm; 644 time_t ti; 645 int64_t secs; 646 char *sizing = NULL; 647 648 if (!sn) { 649 qemu_printf("%-10s%-20s%7s%20s%15s", 650 "ID", "TAG", "VM SIZE", "DATE", "VM CLOCK"); 651 } else { 652 ti = sn->date_sec; 653 localtime_r(&ti, &tm); 654 strftime(date_buf, sizeof(date_buf), 655 "%Y-%m-%d %H:%M:%S", &tm); 656 secs = sn->vm_clock_nsec / 1000000000; 657 snprintf(clock_buf, sizeof(clock_buf), 658 "%02d:%02d:%02d.%03d", 659 (int)(secs / 3600), 660 (int)((secs / 60) % 60), 661 (int)(secs % 60), 662 (int)((sn->vm_clock_nsec / 1000000) % 1000)); 663 sizing = size_to_str(sn->vm_state_size); 664 qemu_printf("%-10s%-20s%7s%20s%15s", 665 sn->id_str, sn->name, 666 sizing, 667 date_buf, 668 clock_buf); 669 } 670 g_free(sizing); 671 } 672 673 static void dump_qdict(int indentation, QDict *dict); 674 static void dump_qlist(int indentation, QList *list); 675 676 static void dump_qobject(int comp_indent, QObject *obj) 677 { 678 switch (qobject_type(obj)) { 679 case QTYPE_QNUM: { 680 QNum *value = qobject_to(QNum, obj); 681 char *tmp = qnum_to_string(value); 682 qemu_printf("%s", tmp); 683 g_free(tmp); 684 break; 685 } 686 case QTYPE_QSTRING: { 687 QString *value = qobject_to(QString, obj); 688 qemu_printf("%s", qstring_get_str(value)); 689 break; 690 } 691 case QTYPE_QDICT: { 692 QDict *value = qobject_to(QDict, obj); 693 dump_qdict(comp_indent, value); 694 break; 695 } 696 case QTYPE_QLIST: { 697 QList *value = qobject_to(QList, obj); 698 dump_qlist(comp_indent, value); 699 break; 700 } 701 case QTYPE_QBOOL: { 702 QBool *value = qobject_to(QBool, obj); 703 qemu_printf("%s", qbool_get_bool(value) ? "true" : "false"); 704 break; 705 } 706 default: 707 abort(); 708 } 709 } 710 711 static void dump_qlist(int indentation, QList *list) 712 { 713 const QListEntry *entry; 714 int i = 0; 715 716 for (entry = qlist_first(list); entry; entry = qlist_next(entry), i++) { 717 QType type = qobject_type(entry->value); 718 bool composite = (type == QTYPE_QDICT || type == QTYPE_QLIST); 719 qemu_printf("%*s[%i]:%c", indentation * 4, "", i, 720 composite ? '\n' : ' '); 721 dump_qobject(indentation + 1, entry->value); 722 if (!composite) { 723 qemu_printf("\n"); 724 } 725 } 726 } 727 728 static void dump_qdict(int indentation, QDict *dict) 729 { 730 const QDictEntry *entry; 731 732 for (entry = qdict_first(dict); entry; entry = qdict_next(dict, entry)) { 733 QType type = qobject_type(entry->value); 734 bool composite = (type == QTYPE_QDICT || type == QTYPE_QLIST); 735 char *key = g_malloc(strlen(entry->key) + 1); 736 int i; 737 738 /* replace dashes with spaces in key (variable) names */ 739 for (i = 0; entry->key[i]; i++) { 740 key[i] = entry->key[i] == '-' ? ' ' : entry->key[i]; 741 } 742 key[i] = 0; 743 qemu_printf("%*s%s:%c", indentation * 4, "", key, 744 composite ? '\n' : ' '); 745 dump_qobject(indentation + 1, entry->value); 746 if (!composite) { 747 qemu_printf("\n"); 748 } 749 g_free(key); 750 } 751 } 752 753 void bdrv_image_info_specific_dump(ImageInfoSpecific *info_spec) 754 { 755 QObject *obj, *data; 756 Visitor *v = qobject_output_visitor_new(&obj); 757 758 visit_type_ImageInfoSpecific(v, NULL, &info_spec, &error_abort); 759 visit_complete(v, &obj); 760 data = qdict_get(qobject_to(QDict, obj), "data"); 761 dump_qobject(1, data); 762 qobject_unref(obj); 763 visit_free(v); 764 } 765 766 void bdrv_image_info_dump(ImageInfo *info) 767 { 768 char *size_buf, *dsize_buf; 769 if (!info->has_actual_size) { 770 dsize_buf = g_strdup("unavailable"); 771 } else { 772 dsize_buf = size_to_str(info->actual_size); 773 } 774 size_buf = size_to_str(info->virtual_size); 775 qemu_printf("image: %s\n" 776 "file format: %s\n" 777 "virtual size: %s (%" PRId64 " bytes)\n" 778 "disk size: %s\n", 779 info->filename, info->format, size_buf, 780 info->virtual_size, 781 dsize_buf); 782 g_free(size_buf); 783 g_free(dsize_buf); 784 785 if (info->has_encrypted && info->encrypted) { 786 qemu_printf("encrypted: yes\n"); 787 } 788 789 if (info->has_cluster_size) { 790 qemu_printf("cluster_size: %" PRId64 "\n", 791 info->cluster_size); 792 } 793 794 if (info->has_dirty_flag && info->dirty_flag) { 795 qemu_printf("cleanly shut down: no\n"); 796 } 797 798 if (info->has_backing_filename) { 799 qemu_printf("backing file: %s", info->backing_filename); 800 if (!info->has_full_backing_filename) { 801 qemu_printf(" (cannot determine actual path)"); 802 } else if (strcmp(info->backing_filename, 803 info->full_backing_filename) != 0) { 804 qemu_printf(" (actual path: %s)", info->full_backing_filename); 805 } 806 qemu_printf("\n"); 807 if (info->has_backing_filename_format) { 808 qemu_printf("backing file format: %s\n", 809 info->backing_filename_format); 810 } 811 } 812 813 if (info->has_snapshots) { 814 SnapshotInfoList *elem; 815 816 qemu_printf("Snapshot list:\n"); 817 bdrv_snapshot_dump(NULL); 818 qemu_printf("\n"); 819 820 /* Ideally bdrv_snapshot_dump() would operate on SnapshotInfoList but 821 * we convert to the block layer's native QEMUSnapshotInfo for now. 822 */ 823 for (elem = info->snapshots; elem; elem = elem->next) { 824 QEMUSnapshotInfo sn = { 825 .vm_state_size = elem->value->vm_state_size, 826 .date_sec = elem->value->date_sec, 827 .date_nsec = elem->value->date_nsec, 828 .vm_clock_nsec = elem->value->vm_clock_sec * 1000000000ULL + 829 elem->value->vm_clock_nsec, 830 }; 831 832 pstrcpy(sn.id_str, sizeof(sn.id_str), elem->value->id); 833 pstrcpy(sn.name, sizeof(sn.name), elem->value->name); 834 bdrv_snapshot_dump(&sn); 835 qemu_printf("\n"); 836 } 837 } 838 839 if (info->has_format_specific) { 840 qemu_printf("Format specific information:\n"); 841 bdrv_image_info_specific_dump(info->format_specific); 842 } 843 } 844