/* * Block layer qmp and info dump related functions * * Copyright (c) 2003-2008 Fabrice Bellard * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ #include "qemu/osdep.h" #include "qemu/cutils.h" #include "block/qapi.h" #include "block/block_int.h" #include "block/dirty-bitmap.h" #include "block/throttle-groups.h" #include "block/write-threshold.h" #include "qapi/error.h" #include "qapi/qapi-commands-block-core.h" #include "qapi/qobject-output-visitor.h" #include "qapi/qapi-visit-block-core.h" #include "qapi/qmp/qbool.h" #include "qapi/qmp/qdict.h" #include "qapi/qmp/qlist.h" #include "qapi/qmp/qnum.h" #include "qapi/qmp/qstring.h" #include "qemu/qemu-print.h" #include "sysemu/block-backend.h" #include "qemu/cutils.h" BlockDeviceInfo *bdrv_block_device_info(BlockBackend *blk, BlockDriverState *bs, bool flat, Error **errp) { ImageInfo **p_image_info; ImageInfo *backing_info; BlockDriverState *bs0, *backing; BlockDeviceInfo *info; ERRP_GUARD(); if (!bs->drv) { error_setg(errp, "Block device %s is ejected", bs->node_name); return NULL; } bdrv_refresh_filename(bs); info = g_malloc0(sizeof(*info)); info->file = g_strdup(bs->filename); info->ro = bdrv_is_read_only(bs); info->drv = g_strdup(bs->drv->format_name); info->encrypted = bs->encrypted; info->cache = g_new(BlockdevCacheInfo, 1); *info->cache = (BlockdevCacheInfo) { .writeback = blk ? blk_enable_write_cache(blk) : true, .direct = !!(bs->open_flags & BDRV_O_NOCACHE), .no_flush = !!(bs->open_flags & BDRV_O_NO_FLUSH), }; if (bs->node_name[0]) { info->node_name = g_strdup(bs->node_name); } backing = bdrv_cow_bs(bs); if (backing) { info->backing_file = g_strdup(backing->filename); } if (!QLIST_EMPTY(&bs->dirty_bitmaps)) { info->has_dirty_bitmaps = true; info->dirty_bitmaps = bdrv_query_dirty_bitmaps(bs); } info->detect_zeroes = bs->detect_zeroes; if (blk && blk_get_public(blk)->throttle_group_member.throttle_state) { ThrottleConfig cfg; BlockBackendPublic *blkp = blk_get_public(blk); throttle_group_get_config(&blkp->throttle_group_member, &cfg); info->bps = cfg.buckets[THROTTLE_BPS_TOTAL].avg; info->bps_rd = cfg.buckets[THROTTLE_BPS_READ].avg; info->bps_wr = cfg.buckets[THROTTLE_BPS_WRITE].avg; info->iops = cfg.buckets[THROTTLE_OPS_TOTAL].avg; info->iops_rd = cfg.buckets[THROTTLE_OPS_READ].avg; info->iops_wr = cfg.buckets[THROTTLE_OPS_WRITE].avg; info->has_bps_max = cfg.buckets[THROTTLE_BPS_TOTAL].max; info->bps_max = cfg.buckets[THROTTLE_BPS_TOTAL].max; info->has_bps_rd_max = cfg.buckets[THROTTLE_BPS_READ].max; info->bps_rd_max = cfg.buckets[THROTTLE_BPS_READ].max; info->has_bps_wr_max = cfg.buckets[THROTTLE_BPS_WRITE].max; info->bps_wr_max = cfg.buckets[THROTTLE_BPS_WRITE].max; info->has_iops_max = cfg.buckets[THROTTLE_OPS_TOTAL].max; info->iops_max = cfg.buckets[THROTTLE_OPS_TOTAL].max; info->has_iops_rd_max = cfg.buckets[THROTTLE_OPS_READ].max; info->iops_rd_max = cfg.buckets[THROTTLE_OPS_READ].max; info->has_iops_wr_max = cfg.buckets[THROTTLE_OPS_WRITE].max; info->iops_wr_max = cfg.buckets[THROTTLE_OPS_WRITE].max; info->has_bps_max_length = info->has_bps_max; info->bps_max_length = cfg.buckets[THROTTLE_BPS_TOTAL].burst_length; info->has_bps_rd_max_length = info->has_bps_rd_max; info->bps_rd_max_length = cfg.buckets[THROTTLE_BPS_READ].burst_length; info->has_bps_wr_max_length = info->has_bps_wr_max; info->bps_wr_max_length = cfg.buckets[THROTTLE_BPS_WRITE].burst_length; info->has_iops_max_length = info->has_iops_max; info->iops_max_length = cfg.buckets[THROTTLE_OPS_TOTAL].burst_length; info->has_iops_rd_max_length = info->has_iops_rd_max; info->iops_rd_max_length = cfg.buckets[THROTTLE_OPS_READ].burst_length; info->has_iops_wr_max_length = info->has_iops_wr_max; info->iops_wr_max_length = cfg.buckets[THROTTLE_OPS_WRITE].burst_length; info->has_iops_size = cfg.op_size; info->iops_size = cfg.op_size; info->group = g_strdup(throttle_group_get_name(&blkp->throttle_group_member)); } info->write_threshold = bdrv_write_threshold_get(bs); bs0 = bs; p_image_info = &info->image; info->backing_file_depth = 0; /* * Skip automatically inserted nodes that the user isn't aware of for * query-block (blk != NULL), but not for query-named-block-nodes */ bdrv_query_image_info(bs0, p_image_info, flat, blk != NULL, errp); if (*errp) { qapi_free_BlockDeviceInfo(info); return NULL; } backing_info = info->image->backing_image; while (backing_info) { info->backing_file_depth++; backing_info = backing_info->backing_image; } return info; } /* * Returns 0 on success, with *p_list either set to describe snapshot * information, or NULL because there are no snapshots. Returns -errno on * error, with *p_list untouched. */ int bdrv_query_snapshot_info_list(BlockDriverState *bs, SnapshotInfoList **p_list, Error **errp) { int i, sn_count; QEMUSnapshotInfo *sn_tab = NULL; SnapshotInfoList *head = NULL, **tail = &head; SnapshotInfo *info; sn_count = bdrv_snapshot_list(bs, &sn_tab); if (sn_count < 0) { const char *dev = bdrv_get_device_name(bs); switch (sn_count) { case -ENOMEDIUM: error_setg(errp, "Device '%s' is not inserted", dev); break; case -ENOTSUP: error_setg(errp, "Device '%s' does not support internal snapshots", dev); break; default: error_setg_errno(errp, -sn_count, "Can't list snapshots of device '%s'", dev); break; } return sn_count; } for (i = 0; i < sn_count; i++) { info = g_new0(SnapshotInfo, 1); info->id = g_strdup(sn_tab[i].id_str); info->name = g_strdup(sn_tab[i].name); info->vm_state_size = sn_tab[i].vm_state_size; info->date_sec = sn_tab[i].date_sec; info->date_nsec = sn_tab[i].date_nsec; info->vm_clock_sec = sn_tab[i].vm_clock_nsec / 1000000000; info->vm_clock_nsec = sn_tab[i].vm_clock_nsec % 1000000000; info->icount = sn_tab[i].icount; info->has_icount = sn_tab[i].icount != -1ULL; QAPI_LIST_APPEND(tail, info); } g_free(sn_tab); *p_list = head; return 0; } /** * Helper function for other query info functions. Store information about @bs * in @info, setting @errp on error. */ static void bdrv_do_query_node_info(BlockDriverState *bs, BlockNodeInfo *info, Error **errp) { int64_t size; const char *backing_filename; BlockDriverInfo bdi; int ret; Error *err = NULL; aio_context_acquire(bdrv_get_aio_context(bs)); size = bdrv_getlength(bs); if (size < 0) { error_setg_errno(errp, -size, "Can't get image size '%s'", bs->exact_filename); goto out; } bdrv_refresh_filename(bs); info->filename = g_strdup(bs->filename); info->format = g_strdup(bdrv_get_format_name(bs)); info->virtual_size = size; info->actual_size = bdrv_get_allocated_file_size(bs); info->has_actual_size = info->actual_size >= 0; if (bs->encrypted) { info->encrypted = true; info->has_encrypted = true; } if (bdrv_get_info(bs, &bdi) >= 0) { if (bdi.cluster_size != 0) { info->cluster_size = bdi.cluster_size; info->has_cluster_size = true; } info->dirty_flag = bdi.is_dirty; info->has_dirty_flag = true; } info->format_specific = bdrv_get_specific_info(bs, &err); if (err) { error_propagate(errp, err); goto out; } backing_filename = bs->backing_file; if (backing_filename[0] != '\0') { char *backing_filename2; info->backing_filename = g_strdup(backing_filename); backing_filename2 = bdrv_get_full_backing_filename(bs, NULL); /* Always report the full_backing_filename if present, even if it's the * same as backing_filename. That they are same is useful info. */ if (backing_filename2) { info->full_backing_filename = g_strdup(backing_filename2); } if (bs->backing_format[0]) { info->backing_filename_format = g_strdup(bs->backing_format); } g_free(backing_filename2); } ret = bdrv_query_snapshot_info_list(bs, &info->snapshots, &err); switch (ret) { case 0: if (info->snapshots) { info->has_snapshots = true; } break; /* recoverable error */ case -ENOMEDIUM: case -ENOTSUP: error_free(err); break; default: error_propagate(errp, err); goto out; } out: aio_context_release(bdrv_get_aio_context(bs)); } /** * bdrv_query_block_node_info: * @bs: block node to examine * @p_info: location to store node information * @errp: location to store error information * * Store image information about @bs in @p_info. * * @p_info will be set only on success. On error, store error in @errp. */ void bdrv_query_block_node_info(BlockDriverState *bs, BlockNodeInfo **p_info, Error **errp) { BlockNodeInfo *info; ERRP_GUARD(); info = g_new0(BlockNodeInfo, 1); bdrv_do_query_node_info(bs, info, errp); if (*errp) { qapi_free_BlockNodeInfo(info); return; } *p_info = info; } /** * bdrv_query_image_info: * @bs: block node to examine * @p_info: location to store image information * @flat: skip backing node information * @skip_implicit_filters: skip implicit filters in the backing chain * @errp: location to store error information * * Store image information in @p_info, potentially recursively covering the * backing chain. * * If @flat is true, do not query backing image information, i.e. * (*p_info)->has_backing_image will be set to false and * (*p_info)->backing_image to NULL even when the image does in fact have a * backing image. * * If @skip_implicit_filters is true, implicit filter nodes in the backing chain * will be skipped when querying backing image information. * (@skip_implicit_filters is ignored when @flat is true.) * * @p_info will be set only on success. On error, store error in @errp. */ void bdrv_query_image_info(BlockDriverState *bs, ImageInfo **p_info, bool flat, bool skip_implicit_filters, Error **errp) { ImageInfo *info; ERRP_GUARD(); info = g_new0(ImageInfo, 1); bdrv_do_query_node_info(bs, qapi_ImageInfo_base(info), errp); if (*errp) { goto fail; } if (!flat) { BlockDriverState *backing; /* * Use any filtered child here (for backwards compatibility to when * we always took bs->backing, which might be any filtered child). */ backing = bdrv_filter_or_cow_bs(bs); if (skip_implicit_filters) { backing = bdrv_skip_implicit_filters(backing); } if (backing) { bdrv_query_image_info(backing, &info->backing_image, false, skip_implicit_filters, errp); if (*errp) { goto fail; } } } *p_info = info; return; fail: assert(*errp); qapi_free_ImageInfo(info); } /** * bdrv_query_block_graph_info: * @bs: root node to start from * @p_info: location to store image information * @errp: location to store error information * * Store image information about the graph starting from @bs in @p_info. * * @p_info will be set only on success. On error, store error in @errp. */ void bdrv_query_block_graph_info(BlockDriverState *bs, BlockGraphInfo **p_info, Error **errp) { BlockGraphInfo *info; BlockChildInfoList **children_list_tail; BdrvChild *c; ERRP_GUARD(); info = g_new0(BlockGraphInfo, 1); bdrv_do_query_node_info(bs, qapi_BlockGraphInfo_base(info), errp); if (*errp) { goto fail; } children_list_tail = &info->children; QLIST_FOREACH(c, &bs->children, next) { BlockChildInfo *c_info; c_info = g_new0(BlockChildInfo, 1); QAPI_LIST_APPEND(children_list_tail, c_info); c_info->name = g_strdup(c->name); bdrv_query_block_graph_info(c->bs, &c_info->info, errp); if (*errp) { goto fail; } } *p_info = info; return; fail: assert(*errp != NULL); qapi_free_BlockGraphInfo(info); } /* @p_info will be set only on success. */ static void bdrv_query_info(BlockBackend *blk, BlockInfo **p_info, Error **errp) { BlockInfo *info = g_malloc0(sizeof(*info)); BlockDriverState *bs = blk_bs(blk); char *qdev; /* Skip automatically inserted nodes that the user isn't aware of */ bs = bdrv_skip_implicit_filters(bs); info->device = g_strdup(blk_name(blk)); info->type = g_strdup("unknown"); info->locked = blk_dev_is_medium_locked(blk); info->removable = blk_dev_has_removable_media(blk); qdev = blk_get_attached_dev_id(blk); if (qdev && *qdev) { info->qdev = qdev; } else { g_free(qdev); } if (blk_dev_has_tray(blk)) { info->has_tray_open = true; info->tray_open = blk_dev_is_tray_open(blk); } if (blk_iostatus_is_enabled(blk)) { info->has_io_status = true; info->io_status = blk_iostatus(blk); } if (bs && bs->drv) { info->inserted = bdrv_block_device_info(blk, bs, false, errp); if (info->inserted == NULL) { goto err; } } *p_info = info; return; err: qapi_free_BlockInfo(info); } static uint64List *uint64_list(uint64_t *list, int size) { int i; uint64List *out_list = NULL; uint64List **tail = &out_list; for (i = 0; i < size; i++) { QAPI_LIST_APPEND(tail, list[i]); } return out_list; } static BlockLatencyHistogramInfo * bdrv_latency_histogram_stats(BlockLatencyHistogram *hist) { BlockLatencyHistogramInfo *info; if (!hist->bins) { return NULL; } info = g_new0(BlockLatencyHistogramInfo, 1); info->boundaries = uint64_list(hist->boundaries, hist->nbins - 1); info->bins = uint64_list(hist->bins, hist->nbins); return info; } static void bdrv_query_blk_stats(BlockDeviceStats *ds, BlockBackend *blk) { BlockAcctStats *stats = blk_get_stats(blk); BlockAcctTimedStats *ts = NULL; BlockLatencyHistogram *hgram; ds->rd_bytes = stats->nr_bytes[BLOCK_ACCT_READ]; ds->wr_bytes = stats->nr_bytes[BLOCK_ACCT_WRITE]; ds->unmap_bytes = stats->nr_bytes[BLOCK_ACCT_UNMAP]; ds->rd_operations = stats->nr_ops[BLOCK_ACCT_READ]; ds->wr_operations = stats->nr_ops[BLOCK_ACCT_WRITE]; ds->unmap_operations = stats->nr_ops[BLOCK_ACCT_UNMAP]; ds->failed_rd_operations = stats->failed_ops[BLOCK_ACCT_READ]; ds->failed_wr_operations = stats->failed_ops[BLOCK_ACCT_WRITE]; ds->failed_flush_operations = stats->failed_ops[BLOCK_ACCT_FLUSH]; ds->failed_unmap_operations = stats->failed_ops[BLOCK_ACCT_UNMAP]; ds->invalid_rd_operations = stats->invalid_ops[BLOCK_ACCT_READ]; ds->invalid_wr_operations = stats->invalid_ops[BLOCK_ACCT_WRITE]; ds->invalid_flush_operations = stats->invalid_ops[BLOCK_ACCT_FLUSH]; ds->invalid_unmap_operations = stats->invalid_ops[BLOCK_ACCT_UNMAP]; ds->rd_merged = stats->merged[BLOCK_ACCT_READ]; ds->wr_merged = stats->merged[BLOCK_ACCT_WRITE]; ds->unmap_merged = stats->merged[BLOCK_ACCT_UNMAP]; ds->flush_operations = stats->nr_ops[BLOCK_ACCT_FLUSH]; ds->wr_total_time_ns = stats->total_time_ns[BLOCK_ACCT_WRITE]; ds->rd_total_time_ns = stats->total_time_ns[BLOCK_ACCT_READ]; ds->flush_total_time_ns = stats->total_time_ns[BLOCK_ACCT_FLUSH]; ds->unmap_total_time_ns = stats->total_time_ns[BLOCK_ACCT_UNMAP]; ds->has_idle_time_ns = stats->last_access_time_ns > 0; if (ds->has_idle_time_ns) { ds->idle_time_ns = block_acct_idle_time_ns(stats); } ds->account_invalid = stats->account_invalid; ds->account_failed = stats->account_failed; while ((ts = block_acct_interval_next(stats, ts))) { BlockDeviceTimedStats *dev_stats = g_malloc0(sizeof(*dev_stats)); TimedAverage *rd = &ts->latency[BLOCK_ACCT_READ]; TimedAverage *wr = &ts->latency[BLOCK_ACCT_WRITE]; TimedAverage *fl = &ts->latency[BLOCK_ACCT_FLUSH]; dev_stats->interval_length = ts->interval_length; dev_stats->min_rd_latency_ns = timed_average_min(rd); dev_stats->max_rd_latency_ns = timed_average_max(rd); dev_stats->avg_rd_latency_ns = timed_average_avg(rd); dev_stats->min_wr_latency_ns = timed_average_min(wr); dev_stats->max_wr_latency_ns = timed_average_max(wr); dev_stats->avg_wr_latency_ns = timed_average_avg(wr); dev_stats->min_flush_latency_ns = timed_average_min(fl); dev_stats->max_flush_latency_ns = timed_average_max(fl); dev_stats->avg_flush_latency_ns = timed_average_avg(fl); dev_stats->avg_rd_queue_depth = block_acct_queue_depth(ts, BLOCK_ACCT_READ); dev_stats->avg_wr_queue_depth = block_acct_queue_depth(ts, BLOCK_ACCT_WRITE); QAPI_LIST_PREPEND(ds->timed_stats, dev_stats); } hgram = stats->latency_histogram; ds->rd_latency_histogram = bdrv_latency_histogram_stats(&hgram[BLOCK_ACCT_READ]); ds->wr_latency_histogram = bdrv_latency_histogram_stats(&hgram[BLOCK_ACCT_WRITE]); ds->flush_latency_histogram = bdrv_latency_histogram_stats(&hgram[BLOCK_ACCT_FLUSH]); } static BlockStats *bdrv_query_bds_stats(BlockDriverState *bs, bool blk_level) { BdrvChild *parent_child; BlockDriverState *filter_or_cow_bs; BlockStats *s = NULL; s = g_malloc0(sizeof(*s)); s->stats = g_malloc0(sizeof(*s->stats)); if (!bs) { return s; } /* Skip automatically inserted nodes that the user isn't aware of in * a BlockBackend-level command. Stay at the exact node for a node-level * command. */ if (blk_level) { bs = bdrv_skip_implicit_filters(bs); } if (bdrv_get_node_name(bs)[0]) { s->node_name = g_strdup(bdrv_get_node_name(bs)); } s->stats->wr_highest_offset = stat64_get(&bs->wr_highest_offset); s->driver_specific = bdrv_get_specific_stats(bs); parent_child = bdrv_primary_child(bs); if (!parent_child || !(parent_child->role & (BDRV_CHILD_DATA | BDRV_CHILD_FILTERED))) { BdrvChild *c; /* * Look for a unique data-storing child. We do not need to look for * filtered children, as there would be only one and it would have been * the primary child. */ parent_child = NULL; QLIST_FOREACH(c, &bs->children, next) { if (c->role & BDRV_CHILD_DATA) { if (parent_child) { /* * There are multiple data-storing children and we cannot * choose between them. */ parent_child = NULL; break; } parent_child = c; } } } if (parent_child) { s->parent = bdrv_query_bds_stats(parent_child->bs, blk_level); } filter_or_cow_bs = bdrv_filter_or_cow_bs(bs); if (blk_level && filter_or_cow_bs) { /* * Put any filtered or COW child here (for backwards * compatibility to when we put bs0->backing here, which might * be either) */ s->backing = bdrv_query_bds_stats(filter_or_cow_bs, blk_level); } return s; } BlockInfoList *qmp_query_block(Error **errp) { BlockInfoList *head = NULL, **p_next = &head; BlockBackend *blk; Error *local_err = NULL; for (blk = blk_all_next(NULL); blk; blk = blk_all_next(blk)) { BlockInfoList *info; if (!*blk_name(blk) && !blk_get_attached_dev(blk)) { continue; } info = g_malloc0(sizeof(*info)); bdrv_query_info(blk, &info->value, &local_err); if (local_err) { error_propagate(errp, local_err); g_free(info); qapi_free_BlockInfoList(head); return NULL; } *p_next = info; p_next = &info->next; } return head; } BlockStatsList *qmp_query_blockstats(bool has_query_nodes, bool query_nodes, Error **errp) { BlockStatsList *head = NULL, **tail = &head; BlockBackend *blk; BlockDriverState *bs; /* Just to be safe if query_nodes is not always initialized */ if (has_query_nodes && query_nodes) { for (bs = bdrv_next_node(NULL); bs; bs = bdrv_next_node(bs)) { AioContext *ctx = bdrv_get_aio_context(bs); aio_context_acquire(ctx); QAPI_LIST_APPEND(tail, bdrv_query_bds_stats(bs, false)); aio_context_release(ctx); } } else { for (blk = blk_all_next(NULL); blk; blk = blk_all_next(blk)) { AioContext *ctx = blk_get_aio_context(blk); BlockStats *s; char *qdev; if (!*blk_name(blk) && !blk_get_attached_dev(blk)) { continue; } aio_context_acquire(ctx); s = bdrv_query_bds_stats(blk_bs(blk), true); s->device = g_strdup(blk_name(blk)); qdev = blk_get_attached_dev_id(blk); if (qdev && *qdev) { s->qdev = qdev; } else { g_free(qdev); } bdrv_query_blk_stats(s->stats, blk); aio_context_release(ctx); QAPI_LIST_APPEND(tail, s); } } return head; } void bdrv_snapshot_dump(QEMUSnapshotInfo *sn) { char clock_buf[128]; char icount_buf[128] = {0}; int64_t secs; char *sizing = NULL; if (!sn) { qemu_printf("%-10s%-17s%8s%20s%13s%11s", "ID", "TAG", "VM SIZE", "DATE", "VM CLOCK", "ICOUNT"); } else { g_autoptr(GDateTime) date = g_date_time_new_from_unix_local(sn->date_sec); g_autofree char *date_buf = g_date_time_format(date, "%Y-%m-%d %H:%M:%S"); secs = sn->vm_clock_nsec / 1000000000; snprintf(clock_buf, sizeof(clock_buf), "%02d:%02d:%02d.%03d", (int)(secs / 3600), (int)((secs / 60) % 60), (int)(secs % 60), (int)((sn->vm_clock_nsec / 1000000) % 1000)); sizing = size_to_str(sn->vm_state_size); if (sn->icount != -1ULL) { snprintf(icount_buf, sizeof(icount_buf), "%"PRId64, sn->icount); } qemu_printf("%-9s %-16s %8s%20s%13s%11s", sn->id_str, sn->name, sizing, date_buf, clock_buf, icount_buf); } g_free(sizing); } static void dump_qdict(int indentation, QDict *dict); static void dump_qlist(int indentation, QList *list); static void dump_qobject(int comp_indent, QObject *obj) { switch (qobject_type(obj)) { case QTYPE_QNUM: { QNum *value = qobject_to(QNum, obj); char *tmp = qnum_to_string(value); qemu_printf("%s", tmp); g_free(tmp); break; } case QTYPE_QSTRING: { QString *value = qobject_to(QString, obj); qemu_printf("%s", qstring_get_str(value)); break; } case QTYPE_QDICT: { QDict *value = qobject_to(QDict, obj); dump_qdict(comp_indent, value); break; } case QTYPE_QLIST: { QList *value = qobject_to(QList, obj); dump_qlist(comp_indent, value); break; } case QTYPE_QBOOL: { QBool *value = qobject_to(QBool, obj); qemu_printf("%s", qbool_get_bool(value) ? "true" : "false"); break; } default: abort(); } } static void dump_qlist(int indentation, QList *list) { const QListEntry *entry; int i = 0; for (entry = qlist_first(list); entry; entry = qlist_next(entry), i++) { QType type = qobject_type(entry->value); bool composite = (type == QTYPE_QDICT || type == QTYPE_QLIST); qemu_printf("%*s[%i]:%c", indentation * 4, "", i, composite ? '\n' : ' '); dump_qobject(indentation + 1, entry->value); if (!composite) { qemu_printf("\n"); } } } static void dump_qdict(int indentation, QDict *dict) { const QDictEntry *entry; for (entry = qdict_first(dict); entry; entry = qdict_next(dict, entry)) { QType type = qobject_type(entry->value); bool composite = (type == QTYPE_QDICT || type == QTYPE_QLIST); char *key = g_malloc(strlen(entry->key) + 1); int i; /* replace dashes with spaces in key (variable) names */ for (i = 0; entry->key[i]; i++) { key[i] = entry->key[i] == '-' ? ' ' : entry->key[i]; } key[i] = 0; qemu_printf("%*s%s:%c", indentation * 4, "", key, composite ? '\n' : ' '); dump_qobject(indentation + 1, entry->value); if (!composite) { qemu_printf("\n"); } g_free(key); } } /* * Return whether dumping the given QObject with dump_qobject() would * yield an empty dump, i.e. not print anything. */ static bool qobject_is_empty_dump(const QObject *obj) { switch (qobject_type(obj)) { case QTYPE_QNUM: case QTYPE_QSTRING: case QTYPE_QBOOL: return false; case QTYPE_QDICT: return qdict_size(qobject_to(QDict, obj)) == 0; case QTYPE_QLIST: return qlist_empty(qobject_to(QList, obj)); default: abort(); } } /** * Dumps the given ImageInfoSpecific object in a human-readable form, * prepending an optional prefix if the dump is not empty. */ void bdrv_image_info_specific_dump(ImageInfoSpecific *info_spec, const char *prefix, int indentation) { QObject *obj, *data; Visitor *v = qobject_output_visitor_new(&obj); visit_type_ImageInfoSpecific(v, NULL, &info_spec, &error_abort); visit_complete(v, &obj); data = qdict_get(qobject_to(QDict, obj), "data"); if (!qobject_is_empty_dump(data)) { if (prefix) { qemu_printf("%*s%s", indentation * 4, "", prefix); } dump_qobject(indentation + 1, data); } qobject_unref(obj); visit_free(v); } /** * Print the given @info object in human-readable form. Every field is indented * using the given @indentation (four spaces per indentation level). * * When using this to print a whole block graph, @protocol can be set to true to * signify that the given information is associated with a protocol node, i.e. * just data storage for an image, such that the data it presents is not really * a full VM disk. If so, several fields change name: For example, "virtual * size" is printed as "file length". * (Consider a qcow2 image, which is represented by a qcow2 node and a file * node. Printing a "virtual size" for the file node does not make sense, * because without the qcow2 node, it is not really a guest disk, so it does not * have a "virtual size". Therefore, we call it "file length" instead.) * * @protocol is ignored when @indentation is 0, because we take that to mean * that the associated node is the root node in the queried block graph, and * thus is always to be interpreted as a standalone guest disk. */ void bdrv_node_info_dump(BlockNodeInfo *info, int indentation, bool protocol) { char *size_buf, *dsize_buf; g_autofree char *ind_s = g_strdup_printf("%*s", indentation * 4, ""); if (indentation == 0) { /* Top level, consider this a normal image */ protocol = false; } if (!info->has_actual_size) { dsize_buf = g_strdup("unavailable"); } else { dsize_buf = size_to_str(info->actual_size); } size_buf = size_to_str(info->virtual_size); qemu_printf("%s%s: %s\n" "%s%s: %s\n" "%s%s: %s (%" PRId64 " bytes)\n" "%sdisk size: %s\n", ind_s, protocol ? "filename" : "image", info->filename, ind_s, protocol ? "protocol type" : "file format", info->format, ind_s, protocol ? "file length" : "virtual size", size_buf, info->virtual_size, ind_s, dsize_buf); g_free(size_buf); g_free(dsize_buf); if (info->has_encrypted && info->encrypted) { qemu_printf("%sencrypted: yes\n", ind_s); } if (info->has_cluster_size) { qemu_printf("%scluster_size: %" PRId64 "\n", ind_s, info->cluster_size); } if (info->has_dirty_flag && info->dirty_flag) { qemu_printf("%scleanly shut down: no\n", ind_s); } if (info->backing_filename) { qemu_printf("%sbacking file: %s", ind_s, info->backing_filename); if (!info->full_backing_filename) { qemu_printf(" (cannot determine actual path)"); } else if (strcmp(info->backing_filename, info->full_backing_filename) != 0) { qemu_printf(" (actual path: %s)", info->full_backing_filename); } qemu_printf("\n"); if (info->backing_filename_format) { qemu_printf("%sbacking file format: %s\n", ind_s, info->backing_filename_format); } } if (info->has_snapshots) { SnapshotInfoList *elem; qemu_printf("%sSnapshot list:\n", ind_s); qemu_printf("%s", ind_s); bdrv_snapshot_dump(NULL); qemu_printf("\n"); /* Ideally bdrv_snapshot_dump() would operate on SnapshotInfoList but * we convert to the block layer's native QEMUSnapshotInfo for now. */ for (elem = info->snapshots; elem; elem = elem->next) { QEMUSnapshotInfo sn = { .vm_state_size = elem->value->vm_state_size, .date_sec = elem->value->date_sec, .date_nsec = elem->value->date_nsec, .vm_clock_nsec = elem->value->vm_clock_sec * 1000000000ULL + elem->value->vm_clock_nsec, .icount = elem->value->has_icount ? elem->value->icount : -1ULL, }; pstrcpy(sn.id_str, sizeof(sn.id_str), elem->value->id); pstrcpy(sn.name, sizeof(sn.name), elem->value->name); qemu_printf("%s", ind_s); bdrv_snapshot_dump(&sn); qemu_printf("\n"); } } if (info->format_specific) { bdrv_image_info_specific_dump(info->format_specific, "Format specific information:\n", indentation); } }