hw/elf_ops: Fix a typo
[qemu/ar7.git] / block / qapi.c
blob84a0aadc0950c0d9663f89b475d41353afa944f8
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  */
25 #include "qemu/osdep.h"
26 #include "qemu/cutils.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"
44 BlockDeviceInfo *bdrv_block_device_info(BlockBackend *blk,
45                                         BlockDriverState *bs,
46                                         bool flat,
47                                         Error **errp)
49     ImageInfo **p_image_info;
50     BlockDriverState *bs0, *backing;
51     BlockDeviceInfo *info;
53     if (!bs->drv) {
54         error_setg(errp, "Block device %s is ejected", bs->node_name);
55         return NULL;
56     }
58     bdrv_refresh_filename(bs);
60     info = g_malloc0(sizeof(*info));
61     info->file                   = g_strdup(bs->filename);
62     info->ro                     = bs->read_only;
63     info->drv                    = g_strdup(bs->drv->format_name);
64     info->encrypted              = bs->encrypted;
65     info->encryption_key_missing = false;
67     info->cache = g_new(BlockdevCacheInfo, 1);
68     *info->cache = (BlockdevCacheInfo) {
69         .writeback      = blk ? blk_enable_write_cache(blk) : true,
70         .direct         = !!(bs->open_flags & BDRV_O_NOCACHE),
71         .no_flush       = !!(bs->open_flags & BDRV_O_NO_FLUSH),
72     };
74     if (bs->node_name[0]) {
75         info->has_node_name = true;
76         info->node_name = g_strdup(bs->node_name);
77     }
79     backing = bdrv_cow_bs(bs);
80     if (backing) {
81         info->has_backing_file = true;
82         info->backing_file = g_strdup(backing->filename);
83     }
85     if (!QLIST_EMPTY(&bs->dirty_bitmaps)) {
86         info->has_dirty_bitmaps = true;
87         info->dirty_bitmaps = bdrv_query_dirty_bitmaps(bs);
88     }
90     info->detect_zeroes = bs->detect_zeroes;
92     if (blk && blk_get_public(blk)->throttle_group_member.throttle_state) {
93         ThrottleConfig cfg;
94         BlockBackendPublic *blkp = blk_get_public(blk);
96         throttle_group_get_config(&blkp->throttle_group_member, &cfg);
98         info->bps     = cfg.buckets[THROTTLE_BPS_TOTAL].avg;
99         info->bps_rd  = cfg.buckets[THROTTLE_BPS_READ].avg;
100         info->bps_wr  = cfg.buckets[THROTTLE_BPS_WRITE].avg;
102         info->iops    = cfg.buckets[THROTTLE_OPS_TOTAL].avg;
103         info->iops_rd = cfg.buckets[THROTTLE_OPS_READ].avg;
104         info->iops_wr = cfg.buckets[THROTTLE_OPS_WRITE].avg;
106         info->has_bps_max     = cfg.buckets[THROTTLE_BPS_TOTAL].max;
107         info->bps_max         = cfg.buckets[THROTTLE_BPS_TOTAL].max;
108         info->has_bps_rd_max  = cfg.buckets[THROTTLE_BPS_READ].max;
109         info->bps_rd_max      = cfg.buckets[THROTTLE_BPS_READ].max;
110         info->has_bps_wr_max  = cfg.buckets[THROTTLE_BPS_WRITE].max;
111         info->bps_wr_max      = cfg.buckets[THROTTLE_BPS_WRITE].max;
113         info->has_iops_max    = cfg.buckets[THROTTLE_OPS_TOTAL].max;
114         info->iops_max        = cfg.buckets[THROTTLE_OPS_TOTAL].max;
115         info->has_iops_rd_max = cfg.buckets[THROTTLE_OPS_READ].max;
116         info->iops_rd_max     = cfg.buckets[THROTTLE_OPS_READ].max;
117         info->has_iops_wr_max = cfg.buckets[THROTTLE_OPS_WRITE].max;
118         info->iops_wr_max     = cfg.buckets[THROTTLE_OPS_WRITE].max;
120         info->has_bps_max_length     = info->has_bps_max;
121         info->bps_max_length         =
122             cfg.buckets[THROTTLE_BPS_TOTAL].burst_length;
123         info->has_bps_rd_max_length  = info->has_bps_rd_max;
124         info->bps_rd_max_length      =
125             cfg.buckets[THROTTLE_BPS_READ].burst_length;
126         info->has_bps_wr_max_length  = info->has_bps_wr_max;
127         info->bps_wr_max_length      =
128             cfg.buckets[THROTTLE_BPS_WRITE].burst_length;
130         info->has_iops_max_length    = info->has_iops_max;
131         info->iops_max_length        =
132             cfg.buckets[THROTTLE_OPS_TOTAL].burst_length;
133         info->has_iops_rd_max_length = info->has_iops_rd_max;
134         info->iops_rd_max_length     =
135             cfg.buckets[THROTTLE_OPS_READ].burst_length;
136         info->has_iops_wr_max_length = info->has_iops_wr_max;
137         info->iops_wr_max_length     =
138             cfg.buckets[THROTTLE_OPS_WRITE].burst_length;
140         info->has_iops_size = cfg.op_size;
141         info->iops_size = cfg.op_size;
143         info->has_group = true;
144         info->group =
145             g_strdup(throttle_group_get_name(&blkp->throttle_group_member));
146     }
148     info->write_threshold = bdrv_write_threshold_get(bs);
150     bs0 = bs;
151     p_image_info = &info->image;
152     info->backing_file_depth = 0;
153     while (1) {
154         Error *local_err = NULL;
155         bdrv_query_image_info(bs0, p_image_info, &local_err);
156         if (local_err) {
157             error_propagate(errp, local_err);
158             qapi_free_BlockDeviceInfo(info);
159             return NULL;
160         }
162         /* stop gathering data for flat output */
163         if (flat) {
164             break;
165         }
167         if (bs0->drv && bdrv_filter_or_cow_child(bs0)) {
168             /*
169              * Put any filtered child here (for backwards compatibility to when
170              * we put bs0->backing here, which might be any filtered child).
171              */
172             info->backing_file_depth++;
173             bs0 = bdrv_filter_or_cow_bs(bs0);
174             (*p_image_info)->has_backing_image = true;
175             p_image_info = &((*p_image_info)->backing_image);
176         } else {
177             break;
178         }
180         /* Skip automatically inserted nodes that the user isn't aware of for
181          * query-block (blk != NULL), but not for query-named-block-nodes */
182         if (blk) {
183             bs0 = bdrv_skip_implicit_filters(bs0);
184         }
185     }
187     return info;
191  * Returns 0 on success, with *p_list either set to describe snapshot
192  * information, or NULL because there are no snapshots.  Returns -errno on
193  * error, with *p_list untouched.
194  */
195 int bdrv_query_snapshot_info_list(BlockDriverState *bs,
196                                   SnapshotInfoList **p_list,
197                                   Error **errp)
199     int i, sn_count;
200     QEMUSnapshotInfo *sn_tab = NULL;
201     SnapshotInfoList *head = NULL, **tail = &head;
202     SnapshotInfo *info;
204     sn_count = bdrv_snapshot_list(bs, &sn_tab);
205     if (sn_count < 0) {
206         const char *dev = bdrv_get_device_name(bs);
207         switch (sn_count) {
208         case -ENOMEDIUM:
209             error_setg(errp, "Device '%s' is not inserted", dev);
210             break;
211         case -ENOTSUP:
212             error_setg(errp,
213                        "Device '%s' does not support internal snapshots",
214                        dev);
215             break;
216         default:
217             error_setg_errno(errp, -sn_count,
218                              "Can't list snapshots of device '%s'", dev);
219             break;
220         }
221         return sn_count;
222     }
224     for (i = 0; i < sn_count; i++) {
225         info = g_new0(SnapshotInfo, 1);
226         info->id            = g_strdup(sn_tab[i].id_str);
227         info->name          = g_strdup(sn_tab[i].name);
228         info->vm_state_size = sn_tab[i].vm_state_size;
229         info->date_sec      = sn_tab[i].date_sec;
230         info->date_nsec     = sn_tab[i].date_nsec;
231         info->vm_clock_sec  = sn_tab[i].vm_clock_nsec / 1000000000;
232         info->vm_clock_nsec = sn_tab[i].vm_clock_nsec % 1000000000;
233         info->icount        = sn_tab[i].icount;
234         info->has_icount    = sn_tab[i].icount != -1ULL;
236         QAPI_LIST_APPEND(tail, info);
237     }
239     g_free(sn_tab);
240     *p_list = head;
241     return 0;
245  * bdrv_query_image_info:
246  * @bs: block device to examine
247  * @p_info: location to store image information
248  * @errp: location to store error information
250  * Store "flat" image information in @p_info.
252  * "Flat" means it does *not* query backing image information,
253  * i.e. (*pinfo)->has_backing_image will be set to false and
254  * (*pinfo)->backing_image to NULL even when the image does in fact have
255  * a backing image.
257  * @p_info will be set only on success. On error, store error in @errp.
258  */
259 void bdrv_query_image_info(BlockDriverState *bs,
260                            ImageInfo **p_info,
261                            Error **errp)
263     int64_t size;
264     const char *backing_filename;
265     BlockDriverInfo bdi;
266     int ret;
267     Error *err = NULL;
268     ImageInfo *info;
270     aio_context_acquire(bdrv_get_aio_context(bs));
272     size = bdrv_getlength(bs);
273     if (size < 0) {
274         error_setg_errno(errp, -size, "Can't get image size '%s'",
275                          bs->exact_filename);
276         goto out;
277     }
279     bdrv_refresh_filename(bs);
281     info = g_new0(ImageInfo, 1);
282     info->filename        = g_strdup(bs->filename);
283     info->format          = g_strdup(bdrv_get_format_name(bs));
284     info->virtual_size    = size;
285     info->actual_size     = bdrv_get_allocated_file_size(bs);
286     info->has_actual_size = info->actual_size >= 0;
287     if (bs->encrypted) {
288         info->encrypted = true;
289         info->has_encrypted = true;
290     }
291     if (bdrv_get_info(bs, &bdi) >= 0) {
292         if (bdi.cluster_size != 0) {
293             info->cluster_size = bdi.cluster_size;
294             info->has_cluster_size = true;
295         }
296         info->dirty_flag = bdi.is_dirty;
297         info->has_dirty_flag = true;
298     }
299     info->format_specific = bdrv_get_specific_info(bs, &err);
300     if (err) {
301         error_propagate(errp, err);
302         qapi_free_ImageInfo(info);
303         goto out;
304     }
305     info->has_format_specific = info->format_specific != NULL;
307     backing_filename = bs->backing_file;
308     if (backing_filename[0] != '\0') {
309         char *backing_filename2;
311         info->backing_filename = g_strdup(backing_filename);
312         info->has_backing_filename = true;
313         backing_filename2 = bdrv_get_full_backing_filename(bs, NULL);
315         /* Always report the full_backing_filename if present, even if it's the
316          * same as backing_filename. That they are same is useful info. */
317         if (backing_filename2) {
318             info->full_backing_filename = g_strdup(backing_filename2);
319             info->has_full_backing_filename = true;
320         }
322         if (bs->backing_format[0]) {
323             info->backing_filename_format = g_strdup(bs->backing_format);
324             info->has_backing_filename_format = true;
325         }
326         g_free(backing_filename2);
327     }
329     ret = bdrv_query_snapshot_info_list(bs, &info->snapshots, &err);
330     switch (ret) {
331     case 0:
332         if (info->snapshots) {
333             info->has_snapshots = true;
334         }
335         break;
336     /* recoverable error */
337     case -ENOMEDIUM:
338     case -ENOTSUP:
339         error_free(err);
340         break;
341     default:
342         error_propagate(errp, err);
343         qapi_free_ImageInfo(info);
344         goto out;
345     }
347     *p_info = info;
349 out:
350     aio_context_release(bdrv_get_aio_context(bs));
353 /* @p_info will be set only on success. */
354 static void bdrv_query_info(BlockBackend *blk, BlockInfo **p_info,
355                             Error **errp)
357     BlockInfo *info = g_malloc0(sizeof(*info));
358     BlockDriverState *bs = blk_bs(blk);
359     char *qdev;
361     /* Skip automatically inserted nodes that the user isn't aware of */
362     bs = bdrv_skip_implicit_filters(bs);
364     info->device = g_strdup(blk_name(blk));
365     info->type = g_strdup("unknown");
366     info->locked = blk_dev_is_medium_locked(blk);
367     info->removable = blk_dev_has_removable_media(blk);
369     qdev = blk_get_attached_dev_id(blk);
370     if (qdev && *qdev) {
371         info->has_qdev = true;
372         info->qdev = qdev;
373     } else {
374         g_free(qdev);
375     }
377     if (blk_dev_has_tray(blk)) {
378         info->has_tray_open = true;
379         info->tray_open = blk_dev_is_tray_open(blk);
380     }
382     if (blk_iostatus_is_enabled(blk)) {
383         info->has_io_status = true;
384         info->io_status = blk_iostatus(blk);
385     }
387     if (bs && !QLIST_EMPTY(&bs->dirty_bitmaps)) {
388         info->has_dirty_bitmaps = true;
389         info->dirty_bitmaps = bdrv_query_dirty_bitmaps(bs);
390     }
392     if (bs && bs->drv) {
393         info->has_inserted = true;
394         info->inserted = bdrv_block_device_info(blk, bs, false, errp);
395         if (info->inserted == NULL) {
396             goto err;
397         }
398     }
400     *p_info = info;
401     return;
403  err:
404     qapi_free_BlockInfo(info);
407 static uint64List *uint64_list(uint64_t *list, int size)
409     int i;
410     uint64List *out_list = NULL;
411     uint64List **tail = &out_list;
413     for (i = 0; i < size; i++) {
414         QAPI_LIST_APPEND(tail, list[i]);
415     }
417     return out_list;
420 static void bdrv_latency_histogram_stats(BlockLatencyHistogram *hist,
421                                          bool *not_null,
422                                          BlockLatencyHistogramInfo **info)
424     *not_null = hist->bins != NULL;
425     if (*not_null) {
426         *info = g_new0(BlockLatencyHistogramInfo, 1);
428         (*info)->boundaries = uint64_list(hist->boundaries, hist->nbins - 1);
429         (*info)->bins = uint64_list(hist->bins, hist->nbins);
430     }
433 static void bdrv_query_blk_stats(BlockDeviceStats *ds, BlockBackend *blk)
435     BlockAcctStats *stats = blk_get_stats(blk);
436     BlockAcctTimedStats *ts = NULL;
438     ds->rd_bytes = stats->nr_bytes[BLOCK_ACCT_READ];
439     ds->wr_bytes = stats->nr_bytes[BLOCK_ACCT_WRITE];
440     ds->unmap_bytes = stats->nr_bytes[BLOCK_ACCT_UNMAP];
441     ds->rd_operations = stats->nr_ops[BLOCK_ACCT_READ];
442     ds->wr_operations = stats->nr_ops[BLOCK_ACCT_WRITE];
443     ds->unmap_operations = stats->nr_ops[BLOCK_ACCT_UNMAP];
445     ds->failed_rd_operations = stats->failed_ops[BLOCK_ACCT_READ];
446     ds->failed_wr_operations = stats->failed_ops[BLOCK_ACCT_WRITE];
447     ds->failed_flush_operations = stats->failed_ops[BLOCK_ACCT_FLUSH];
448     ds->failed_unmap_operations = stats->failed_ops[BLOCK_ACCT_UNMAP];
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     ds->invalid_unmap_operations = stats->invalid_ops[BLOCK_ACCT_UNMAP];
456     ds->rd_merged = stats->merged[BLOCK_ACCT_READ];
457     ds->wr_merged = stats->merged[BLOCK_ACCT_WRITE];
458     ds->unmap_merged = stats->merged[BLOCK_ACCT_UNMAP];
459     ds->flush_operations = stats->nr_ops[BLOCK_ACCT_FLUSH];
460     ds->wr_total_time_ns = stats->total_time_ns[BLOCK_ACCT_WRITE];
461     ds->rd_total_time_ns = stats->total_time_ns[BLOCK_ACCT_READ];
462     ds->flush_total_time_ns = stats->total_time_ns[BLOCK_ACCT_FLUSH];
463     ds->unmap_total_time_ns = stats->total_time_ns[BLOCK_ACCT_UNMAP];
465     ds->has_idle_time_ns = stats->last_access_time_ns > 0;
466     if (ds->has_idle_time_ns) {
467         ds->idle_time_ns = block_acct_idle_time_ns(stats);
468     }
470     ds->account_invalid = stats->account_invalid;
471     ds->account_failed = stats->account_failed;
473     while ((ts = block_acct_interval_next(stats, ts))) {
474         BlockDeviceTimedStats *dev_stats = g_malloc0(sizeof(*dev_stats));
476         TimedAverage *rd = &ts->latency[BLOCK_ACCT_READ];
477         TimedAverage *wr = &ts->latency[BLOCK_ACCT_WRITE];
478         TimedAverage *fl = &ts->latency[BLOCK_ACCT_FLUSH];
480         dev_stats->interval_length = ts->interval_length;
482         dev_stats->min_rd_latency_ns = timed_average_min(rd);
483         dev_stats->max_rd_latency_ns = timed_average_max(rd);
484         dev_stats->avg_rd_latency_ns = timed_average_avg(rd);
486         dev_stats->min_wr_latency_ns = timed_average_min(wr);
487         dev_stats->max_wr_latency_ns = timed_average_max(wr);
488         dev_stats->avg_wr_latency_ns = timed_average_avg(wr);
490         dev_stats->min_flush_latency_ns = timed_average_min(fl);
491         dev_stats->max_flush_latency_ns = timed_average_max(fl);
492         dev_stats->avg_flush_latency_ns = timed_average_avg(fl);
494         dev_stats->avg_rd_queue_depth =
495             block_acct_queue_depth(ts, BLOCK_ACCT_READ);
496         dev_stats->avg_wr_queue_depth =
497             block_acct_queue_depth(ts, BLOCK_ACCT_WRITE);
499         QAPI_LIST_PREPEND(ds->timed_stats, dev_stats);
500     }
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);
513 static BlockStats *bdrv_query_bds_stats(BlockDriverState *bs,
514                                         bool blk_level)
516     BdrvChild *parent_child;
517     BlockDriverState *filter_or_cow_bs;
518     BlockStats *s = NULL;
520     s = g_malloc0(sizeof(*s));
521     s->stats = g_malloc0(sizeof(*s->stats));
523     if (!bs) {
524         return s;
525     }
527     /* Skip automatically inserted nodes that the user isn't aware of in
528      * a BlockBackend-level command. Stay at the exact node for a node-level
529      * command. */
530     if (blk_level) {
531         bs = bdrv_skip_implicit_filters(bs);
532     }
534     if (bdrv_get_node_name(bs)[0]) {
535         s->has_node_name = true;
536         s->node_name = g_strdup(bdrv_get_node_name(bs));
537     }
539     s->stats->wr_highest_offset = stat64_get(&bs->wr_highest_offset);
541     s->driver_specific = bdrv_get_specific_stats(bs);
542     if (s->driver_specific) {
543         s->has_driver_specific = true;
544     }
546     parent_child = bdrv_primary_child(bs);
547     if (!parent_child ||
548         !(parent_child->role & (BDRV_CHILD_DATA | BDRV_CHILD_FILTERED)))
549     {
550         BdrvChild *c;
552         /*
553          * Look for a unique data-storing child.  We do not need to look for
554          * filtered children, as there would be only one and it would have been
555          * the primary child.
556          */
557         parent_child = NULL;
558         QLIST_FOREACH(c, &bs->children, next) {
559             if (c->role & BDRV_CHILD_DATA) {
560                 if (parent_child) {
561                     /*
562                      * There are multiple data-storing children and we cannot
563                      * choose between them.
564                      */
565                     parent_child = NULL;
566                     break;
567                 }
568                 parent_child = c;
569             }
570         }
571     }
572     if (parent_child) {
573         s->has_parent = true;
574         s->parent = bdrv_query_bds_stats(parent_child->bs, blk_level);
575     }
577     filter_or_cow_bs = bdrv_filter_or_cow_bs(bs);
578     if (blk_level && filter_or_cow_bs) {
579         /*
580          * Put any filtered or COW child here (for backwards
581          * compatibility to when we put bs0->backing here, which might
582          * be either)
583          */
584         s->has_backing = true;
585         s->backing = bdrv_query_bds_stats(filter_or_cow_bs, blk_level);
586     }
588     return s;
591 BlockInfoList *qmp_query_block(Error **errp)
593     BlockInfoList *head = NULL, **p_next = &head;
594     BlockBackend *blk;
595     Error *local_err = NULL;
597     for (blk = blk_all_next(NULL); blk; blk = blk_all_next(blk)) {
598         BlockInfoList *info;
600         if (!*blk_name(blk) && !blk_get_attached_dev(blk)) {
601             continue;
602         }
604         info = g_malloc0(sizeof(*info));
605         bdrv_query_info(blk, &info->value, &local_err);
606         if (local_err) {
607             error_propagate(errp, local_err);
608             g_free(info);
609             qapi_free_BlockInfoList(head);
610             return NULL;
611         }
613         *p_next = info;
614         p_next = &info->next;
615     }
617     return head;
620 BlockStatsList *qmp_query_blockstats(bool has_query_nodes,
621                                      bool query_nodes,
622                                      Error **errp)
624     BlockStatsList *head = NULL, **tail = &head;
625     BlockBackend *blk;
626     BlockDriverState *bs;
628     /* Just to be safe if query_nodes is not always initialized */
629     if (has_query_nodes && query_nodes) {
630         for (bs = bdrv_next_node(NULL); bs; bs = bdrv_next_node(bs)) {
631             AioContext *ctx = bdrv_get_aio_context(bs);
633             aio_context_acquire(ctx);
634             QAPI_LIST_APPEND(tail, bdrv_query_bds_stats(bs, false));
635             aio_context_release(ctx);
636         }
637     } else {
638         for (blk = blk_all_next(NULL); blk; blk = blk_all_next(blk)) {
639             AioContext *ctx = blk_get_aio_context(blk);
640             BlockStats *s;
641             char *qdev;
643             if (!*blk_name(blk) && !blk_get_attached_dev(blk)) {
644                 continue;
645             }
647             aio_context_acquire(ctx);
648             s = bdrv_query_bds_stats(blk_bs(blk), true);
649             s->has_device = true;
650             s->device = g_strdup(blk_name(blk));
652             qdev = blk_get_attached_dev_id(blk);
653             if (qdev && *qdev) {
654                 s->has_qdev = true;
655                 s->qdev = qdev;
656             } else {
657                 g_free(qdev);
658             }
660             bdrv_query_blk_stats(s->stats, blk);
661             aio_context_release(ctx);
663             QAPI_LIST_APPEND(tail, s);
664         }
665     }
667     return head;
670 void bdrv_snapshot_dump(QEMUSnapshotInfo *sn)
672     char date_buf[128], clock_buf[128];
673     char icount_buf[128] = {0};
674     struct tm tm;
675     time_t ti;
676     int64_t secs;
677     char *sizing = NULL;
679     if (!sn) {
680         qemu_printf("%-10s%-17s%8s%20s%13s%11s",
681                     "ID", "TAG", "VM SIZE", "DATE", "VM CLOCK", "ICOUNT");
682     } else {
683         ti = sn->date_sec;
684         localtime_r(&ti, &tm);
685         strftime(date_buf, sizeof(date_buf),
686                  "%Y-%m-%d %H:%M:%S", &tm);
687         secs = sn->vm_clock_nsec / 1000000000;
688         snprintf(clock_buf, sizeof(clock_buf),
689                  "%02d:%02d:%02d.%03d",
690                  (int)(secs / 3600),
691                  (int)((secs / 60) % 60),
692                  (int)(secs % 60),
693                  (int)((sn->vm_clock_nsec / 1000000) % 1000));
694         sizing = size_to_str(sn->vm_state_size);
695         if (sn->icount != -1ULL) {
696             snprintf(icount_buf, sizeof(icount_buf),
697                 "%"PRId64, sn->icount);
698         }
699         qemu_printf("%-9s %-16s %8s%20s%13s%11s",
700                     sn->id_str, sn->name,
701                     sizing,
702                     date_buf,
703                     clock_buf,
704                     icount_buf);
705     }
706     g_free(sizing);
709 static void dump_qdict(int indentation, QDict *dict);
710 static void dump_qlist(int indentation, QList *list);
712 static void dump_qobject(int comp_indent, QObject *obj)
714     switch (qobject_type(obj)) {
715         case QTYPE_QNUM: {
716             QNum *value = qobject_to(QNum, obj);
717             char *tmp = qnum_to_string(value);
718             qemu_printf("%s", tmp);
719             g_free(tmp);
720             break;
721         }
722         case QTYPE_QSTRING: {
723             QString *value = qobject_to(QString, obj);
724             qemu_printf("%s", qstring_get_str(value));
725             break;
726         }
727         case QTYPE_QDICT: {
728             QDict *value = qobject_to(QDict, obj);
729             dump_qdict(comp_indent, value);
730             break;
731         }
732         case QTYPE_QLIST: {
733             QList *value = qobject_to(QList, obj);
734             dump_qlist(comp_indent, value);
735             break;
736         }
737         case QTYPE_QBOOL: {
738             QBool *value = qobject_to(QBool, obj);
739             qemu_printf("%s", qbool_get_bool(value) ? "true" : "false");
740             break;
741         }
742         default:
743             abort();
744     }
747 static void dump_qlist(int indentation, QList *list)
749     const QListEntry *entry;
750     int i = 0;
752     for (entry = qlist_first(list); entry; entry = qlist_next(entry), i++) {
753         QType type = qobject_type(entry->value);
754         bool composite = (type == QTYPE_QDICT || type == QTYPE_QLIST);
755         qemu_printf("%*s[%i]:%c", indentation * 4, "", i,
756                     composite ? '\n' : ' ');
757         dump_qobject(indentation + 1, entry->value);
758         if (!composite) {
759             qemu_printf("\n");
760         }
761     }
764 static void dump_qdict(int indentation, QDict *dict)
766     const QDictEntry *entry;
768     for (entry = qdict_first(dict); entry; entry = qdict_next(dict, entry)) {
769         QType type = qobject_type(entry->value);
770         bool composite = (type == QTYPE_QDICT || type == QTYPE_QLIST);
771         char *key = g_malloc(strlen(entry->key) + 1);
772         int i;
774         /* replace dashes with spaces in key (variable) names */
775         for (i = 0; entry->key[i]; i++) {
776             key[i] = entry->key[i] == '-' ? ' ' : entry->key[i];
777         }
778         key[i] = 0;
779         qemu_printf("%*s%s:%c", indentation * 4, "", key,
780                     composite ? '\n' : ' ');
781         dump_qobject(indentation + 1, entry->value);
782         if (!composite) {
783             qemu_printf("\n");
784         }
785         g_free(key);
786     }
789 void bdrv_image_info_specific_dump(ImageInfoSpecific *info_spec)
791     QObject *obj, *data;
792     Visitor *v = qobject_output_visitor_new(&obj);
794     visit_type_ImageInfoSpecific(v, NULL, &info_spec, &error_abort);
795     visit_complete(v, &obj);
796     data = qdict_get(qobject_to(QDict, obj), "data");
797     dump_qobject(1, data);
798     qobject_unref(obj);
799     visit_free(v);
802 void bdrv_image_info_dump(ImageInfo *info)
804     char *size_buf, *dsize_buf;
805     if (!info->has_actual_size) {
806         dsize_buf = g_strdup("unavailable");
807     } else {
808         dsize_buf = size_to_str(info->actual_size);
809     }
810     size_buf = size_to_str(info->virtual_size);
811     qemu_printf("image: %s\n"
812                 "file format: %s\n"
813                 "virtual size: %s (%" PRId64 " bytes)\n"
814                 "disk size: %s\n",
815                 info->filename, info->format, size_buf,
816                 info->virtual_size,
817                 dsize_buf);
818     g_free(size_buf);
819     g_free(dsize_buf);
821     if (info->has_encrypted && info->encrypted) {
822         qemu_printf("encrypted: yes\n");
823     }
825     if (info->has_cluster_size) {
826         qemu_printf("cluster_size: %" PRId64 "\n",
827                     info->cluster_size);
828     }
830     if (info->has_dirty_flag && info->dirty_flag) {
831         qemu_printf("cleanly shut down: no\n");
832     }
834     if (info->has_backing_filename) {
835         qemu_printf("backing file: %s", info->backing_filename);
836         if (!info->has_full_backing_filename) {
837             qemu_printf(" (cannot determine actual path)");
838         } else if (strcmp(info->backing_filename,
839                           info->full_backing_filename) != 0) {
840             qemu_printf(" (actual path: %s)", info->full_backing_filename);
841         }
842         qemu_printf("\n");
843         if (info->has_backing_filename_format) {
844             qemu_printf("backing file format: %s\n",
845                         info->backing_filename_format);
846         }
847     }
849     if (info->has_snapshots) {
850         SnapshotInfoList *elem;
852         qemu_printf("Snapshot list:\n");
853         bdrv_snapshot_dump(NULL);
854         qemu_printf("\n");
856         /* Ideally bdrv_snapshot_dump() would operate on SnapshotInfoList but
857          * we convert to the block layer's native QEMUSnapshotInfo for now.
858          */
859         for (elem = info->snapshots; elem; elem = elem->next) {
860             QEMUSnapshotInfo sn = {
861                 .vm_state_size = elem->value->vm_state_size,
862                 .date_sec = elem->value->date_sec,
863                 .date_nsec = elem->value->date_nsec,
864                 .vm_clock_nsec = elem->value->vm_clock_sec * 1000000000ULL +
865                                  elem->value->vm_clock_nsec,
866                 .icount = elem->value->has_icount ?
867                           elem->value->icount : -1ULL,
868             };
870             pstrcpy(sn.id_str, sizeof(sn.id_str), elem->value->id);
871             pstrcpy(sn.name, sizeof(sn.name), elem->value->name);
872             bdrv_snapshot_dump(&sn);
873             qemu_printf("\n");
874         }
875     }
877     if (info->has_format_specific) {
878         qemu_printf("Format specific information:\n");
879         bdrv_image_info_specific_dump(info->format_specific);
880     }