/* * 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 "block/qapi.h" #include "block/block_int.h" #include "block/throttle-groups.h" #include "block/write-threshold.h" #include "qmp-commands.h" #include "qapi-visit.h" #include "qapi/qobject-output-visitor.h" #include "qapi/qmp/types.h" #include "sysemu/block-backend.h" #include "qemu/cutils.h" BlockDeviceInfo *bdrv_block_device_info(BlockBackend *blk, BlockDriverState *bs, Error **errp) { ImageInfo **p_image_info; BlockDriverState *bs0; BlockDeviceInfo *info = g_malloc0(sizeof(*info)); info->file = g_strdup(bs->filename); info->ro = bs->read_only; info->drv = g_strdup(bs->drv->format_name); info->encrypted = bs->encrypted; info->encryption_key_missing = false; 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->has_node_name = true; info->node_name = g_strdup(bs->node_name); } if (bs->backing_file[0]) { info->has_backing_file = true; info->backing_file = g_strdup(bs->backing_file); } info->detect_zeroes = bs->detect_zeroes; if (blk && blk_get_public(blk)->throttle_state) { ThrottleConfig cfg; throttle_group_get_config(blk, &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->has_group = true; info->group = g_strdup(throttle_group_get_name(blk)); } info->write_threshold = bdrv_write_threshold_get(bs); bs0 = bs; p_image_info = &info->image; info->backing_file_depth = 0; while (1) { Error *local_err = NULL; bdrv_query_image_info(bs0, p_image_info, &local_err); if (local_err) { error_propagate(errp, local_err); qapi_free_BlockDeviceInfo(info); return NULL; } if (bs0->drv && bs0->backing) { info->backing_file_depth++; bs0 = bs0->backing->bs; (*p_image_info)->has_backing_image = true; p_image_info = &((*p_image_info)->backing_image); } else { break; } /* Skip automatically inserted nodes that the user isn't aware of for * query-block (blk != NULL), but not for query-named-block-nodes */ while (blk && bs0 && bs0->drv && bs0->implicit) { bs0 = backing_bs(bs0); } } 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 *info_list, *cur_item = NULL, *head = NULL; 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_list = g_new0(SnapshotInfoList, 1); info_list->value = info; /* XXX: waiting for the qapi to support qemu-queue.h types */ if (!cur_item) { head = cur_item = info_list; } else { cur_item->next = info_list; cur_item = info_list; } } g_free(sn_tab); *p_list = head; return 0; } /** * bdrv_query_image_info: * @bs: block device to examine * @p_info: location to store image information * @errp: location to store error information * * Store "flat" image information in @p_info. * * "Flat" means it does *not* query backing image information, * i.e. (*pinfo)->has_backing_image will be set to false and * (*pinfo)->backing_image to NULL even when the image does in fact have * a backing image. * * @p_info will be set only on success. On error, store error in @errp. */ void bdrv_query_image_info(BlockDriverState *bs, ImageInfo **p_info, Error **errp) { int64_t size; const char *backing_filename; BlockDriverInfo bdi; int ret; Error *err = NULL; ImageInfo *info; 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; } info = g_new0(ImageInfo, 1); 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 (bdrv_is_encrypted(bs)) { 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); info->has_format_specific = info->format_specific != NULL; backing_filename = bs->backing_file; if (backing_filename[0] != '\0') { char *backing_filename2 = g_malloc0(PATH_MAX); info->backing_filename = g_strdup(backing_filename); info->has_backing_filename = true; bdrv_get_full_backing_filename(bs, backing_filename2, PATH_MAX, &err); if (err) { /* Can't reconstruct the full backing filename, so we must omit * this field and apply a Best Effort to this query. */ g_free(backing_filename2); backing_filename2 = NULL; error_free(err); err = 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); info->has_full_backing_filename = true; } if (bs->backing_format[0]) { info->backing_filename_format = g_strdup(bs->backing_format); info->has_backing_filename_format = true; } 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); qapi_free_ImageInfo(info); goto out; } *p_info = info; out: aio_context_release(bdrv_get_aio_context(bs)); } /* @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 */ while (bs && bs->drv && bs->implicit) { bs = backing_bs(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->has_qdev = true; 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 && !QLIST_EMPTY(&bs->dirty_bitmaps)) { info->has_dirty_bitmaps = true; info->dirty_bitmaps = bdrv_query_dirty_bitmaps(bs); } if (bs && bs->drv) { info->has_inserted = true; info->inserted = bdrv_block_device_info(blk, bs, errp); if (info->inserted == NULL) { goto err; } } *p_info = info; return; err: qapi_free_BlockInfo(info); } static void bdrv_query_blk_stats(BlockDeviceStats *ds, BlockBackend *blk) { BlockAcctStats *stats = blk_get_stats(blk); BlockAcctTimedStats *ts = NULL; ds->rd_bytes = stats->nr_bytes[BLOCK_ACCT_READ]; ds->wr_bytes = stats->nr_bytes[BLOCK_ACCT_WRITE]; ds->rd_operations = stats->nr_ops[BLOCK_ACCT_READ]; ds->wr_operations = stats->nr_ops[BLOCK_ACCT_WRITE]; 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->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->rd_merged = stats->merged[BLOCK_ACCT_READ]; ds->wr_merged = stats->merged[BLOCK_ACCT_WRITE]; 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->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))) { BlockDeviceTimedStatsList *timed_stats = g_malloc0(sizeof(*timed_stats)); BlockDeviceTimedStats *dev_stats = g_malloc0(sizeof(*dev_stats)); timed_stats->next = ds->timed_stats; timed_stats->value = dev_stats; ds->timed_stats = timed_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); } } static BlockStats *bdrv_query_bds_stats(BlockDriverState *bs, bool blk_level) { 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. */ while (blk_level && bs->drv && bs->implicit) { bs = backing_bs(bs); assert(bs); } if (bdrv_get_node_name(bs)[0]) { s->has_node_name = true; s->node_name = g_strdup(bdrv_get_node_name(bs)); } s->stats->wr_highest_offset = stat64_get(&bs->wr_highest_offset); if (bs->file) { s->has_parent = true; s->parent = bdrv_query_bds_stats(bs->file->bs, blk_level); } if (blk_level && bs->backing) { s->has_backing = true; s->backing = bdrv_query_bds_stats(bs->backing->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, **p_next = &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)) { BlockStatsList *info = g_malloc0(sizeof(*info)); AioContext *ctx = bdrv_get_aio_context(bs); aio_context_acquire(ctx); info->value = bdrv_query_bds_stats(bs, false); aio_context_release(ctx); *p_next = info; p_next = &info->next; } } else { for (blk = blk_next(NULL); blk; blk = blk_next(blk)) { BlockStatsList *info = g_malloc0(sizeof(*info)); AioContext *ctx = blk_get_aio_context(blk); BlockStats *s; aio_context_acquire(ctx); s = bdrv_query_bds_stats(blk_bs(blk), true); s->has_device = true; s->device = g_strdup(blk_name(blk)); bdrv_query_blk_stats(s->stats, blk); aio_context_release(ctx); info->value = s; *p_next = info; p_next = &info->next; } } return head; } #define NB_SUFFIXES 4 static char *get_human_readable_size(char *buf, int buf_size, int64_t size) { static const char suffixes[NB_SUFFIXES] = {'K', 'M', 'G', 'T'}; int64_t base; int i; if (size <= 999) { snprintf(buf, buf_size, "%" PRId64, size); } else { base = 1024; for (i = 0; i < NB_SUFFIXES; i++) { if (size < (10 * base)) { snprintf(buf, buf_size, "%0.1f%c", (double)size / base, suffixes[i]); break; } else if (size < (1000 * base) || i == (NB_SUFFIXES - 1)) { snprintf(buf, buf_size, "%" PRId64 "%c", ((size + (base >> 1)) / base), suffixes[i]); break; } base = base * 1024; } } return buf; } void bdrv_snapshot_dump(fprintf_function func_fprintf, void *f, QEMUSnapshotInfo *sn) { char buf1[128], date_buf[128], clock_buf[128]; struct tm tm; time_t ti; int64_t secs; if (!sn) { func_fprintf(f, "%-10s%-20s%7s%20s%15s", "ID", "TAG", "VM SIZE", "DATE", "VM CLOCK"); } else { ti = sn->date_sec; localtime_r(&ti, &tm); strftime(date_buf, sizeof(date_buf), "%Y-%m-%d %H:%M:%S", &tm); 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)); func_fprintf(f, "%-10s%-20s%7s%20s%15s", sn->id_str, sn->name, get_human_readable_size(buf1, sizeof(buf1), sn->vm_state_size), date_buf, clock_buf); } } static void dump_qdict(fprintf_function func_fprintf, void *f, int indentation, QDict *dict); static void dump_qlist(fprintf_function func_fprintf, void *f, int indentation, QList *list); static void dump_qobject(fprintf_function func_fprintf, void *f, int comp_indent, QObject *obj) { switch (qobject_type(obj)) { case QTYPE_QNUM: { QNum *value = qobject_to_qnum(obj); char *tmp = qnum_to_string(value); func_fprintf(f, "%s", tmp); g_free(tmp); break; } case QTYPE_QSTRING: { QString *value = qobject_to_qstring(obj); func_fprintf(f, "%s", qstring_get_str(value)); break; } case QTYPE_QDICT: { QDict *value = qobject_to_qdict(obj); dump_qdict(func_fprintf, f, comp_indent, value); break; } case QTYPE_QLIST: { QList *value = qobject_to_qlist(obj); dump_qlist(func_fprintf, f, comp_indent, value); break; } case QTYPE_QBOOL: { QBool *value = qobject_to_qbool(obj); func_fprintf(f, "%s", qbool_get_bool(value) ? "true" : "false"); break; } default: abort(); } } static void dump_qlist(fprintf_function func_fprintf, void *f, 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); func_fprintf(f, "%*s[%i]:%c", indentation * 4, "", i, composite ? '\n' : ' '); dump_qobject(func_fprintf, f, indentation + 1, entry->value); if (!composite) { func_fprintf(f, "\n"); } } } static void dump_qdict(fprintf_function func_fprintf, void *f, 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; func_fprintf(f, "%*s%s:%c", indentation * 4, "", key, composite ? '\n' : ' '); dump_qobject(func_fprintf, f, indentation + 1, entry->value); if (!composite) { func_fprintf(f, "\n"); } g_free(key); } } void bdrv_image_info_specific_dump(fprintf_function func_fprintf, void *f, ImageInfoSpecific *info_spec) { 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"); dump_qobject(func_fprintf, f, 1, data); qobject_decref(obj); visit_free(v); } void bdrv_image_info_dump(fprintf_function func_fprintf, void *f, ImageInfo *info) { char size_buf[128], dsize_buf[128]; if (!info->has_actual_size) { snprintf(dsize_buf, sizeof(dsize_buf), "unavailable"); } else { get_human_readable_size(dsize_buf, sizeof(dsize_buf), info->actual_size); } get_human_readable_size(size_buf, sizeof(size_buf), info->virtual_size); func_fprintf(f, "image: %s\n" "file format: %s\n" "virtual size: %s (%" PRId64 " bytes)\n" "disk size: %s\n", info->filename, info->format, size_buf, info->virtual_size, dsize_buf); if (info->has_encrypted && info->encrypted) { func_fprintf(f, "encrypted: yes\n"); } if (info->has_cluster_size) { func_fprintf(f, "cluster_size: %" PRId64 "\n", info->cluster_size); } if (info->has_dirty_flag && info->dirty_flag) { func_fprintf(f, "cleanly shut down: no\n"); } if (info->has_backing_filename) { func_fprintf(f, "backing file: %s", info->backing_filename); if (!info->has_full_backing_filename) { func_fprintf(f, " (cannot determine actual path)"); } else if (strcmp(info->backing_filename, info->full_backing_filename) != 0) { func_fprintf(f, " (actual path: %s)", info->full_backing_filename); } func_fprintf(f, "\n"); if (info->has_backing_filename_format) { func_fprintf(f, "backing file format: %s\n", info->backing_filename_format); } } if (info->has_snapshots) { SnapshotInfoList *elem; func_fprintf(f, "Snapshot list:\n"); bdrv_snapshot_dump(func_fprintf, f, NULL); func_fprintf(f, "\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, }; pstrcpy(sn.id_str, sizeof(sn.id_str), elem->value->id); pstrcpy(sn.name, sizeof(sn.name), elem->value->name); bdrv_snapshot_dump(func_fprintf, f, &sn); func_fprintf(f, "\n"); } } if (info->has_format_specific) { func_fprintf(f, "Format specific information:\n"); bdrv_image_info_specific_dump(func_fprintf, f, info->format_specific); } }