We require a C99 compiler, so let's use 'bool' instead of 'int' when dealing with boolean values. There are few enough clients to fix them all in one pass. Signed-off-by: Eric Blake <eblake@redhat.com> Reviewed-by: Andreas Färber <afaerber@suse.de> Reviewed-by: Alberto Garcia <berto@igalia.com> Acked-by: Luiz Capitulino <lcapitulino@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
673 lines
22 KiB
C
673 lines
22 KiB
C
/*
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* Block layer qmp and info dump related functions
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*
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* Copyright (c) 2003-2008 Fabrice Bellard
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "block/qapi.h"
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#include "block/block_int.h"
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#include "block/throttle-groups.h"
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#include "block/write-threshold.h"
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#include "qmp-commands.h"
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#include "qapi-visit.h"
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#include "qapi/qmp-output-visitor.h"
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#include "qapi/qmp/types.h"
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#include "sysemu/block-backend.h"
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BlockDeviceInfo *bdrv_block_device_info(BlockDriverState *bs, Error **errp)
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{
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ImageInfo **p_image_info;
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BlockDriverState *bs0;
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BlockDeviceInfo *info = g_malloc0(sizeof(*info));
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info->file = g_strdup(bs->filename);
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info->ro = bs->read_only;
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info->drv = g_strdup(bs->drv->format_name);
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info->encrypted = bs->encrypted;
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info->encryption_key_missing = bdrv_key_required(bs);
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info->cache = g_new(BlockdevCacheInfo, 1);
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*info->cache = (BlockdevCacheInfo) {
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.writeback = bdrv_enable_write_cache(bs),
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.direct = !!(bs->open_flags & BDRV_O_NOCACHE),
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.no_flush = !!(bs->open_flags & BDRV_O_NO_FLUSH),
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};
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if (bs->node_name[0]) {
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info->has_node_name = true;
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info->node_name = g_strdup(bs->node_name);
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}
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if (bs->backing_file[0]) {
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info->has_backing_file = true;
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info->backing_file = g_strdup(bs->backing_file);
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}
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info->backing_file_depth = bdrv_get_backing_file_depth(bs);
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info->detect_zeroes = bs->detect_zeroes;
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if (bs->io_limits_enabled) {
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ThrottleConfig cfg;
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throttle_group_get_config(bs, &cfg);
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info->bps = cfg.buckets[THROTTLE_BPS_TOTAL].avg;
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info->bps_rd = cfg.buckets[THROTTLE_BPS_READ].avg;
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info->bps_wr = cfg.buckets[THROTTLE_BPS_WRITE].avg;
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info->iops = cfg.buckets[THROTTLE_OPS_TOTAL].avg;
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info->iops_rd = cfg.buckets[THROTTLE_OPS_READ].avg;
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info->iops_wr = cfg.buckets[THROTTLE_OPS_WRITE].avg;
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info->has_bps_max = cfg.buckets[THROTTLE_BPS_TOTAL].max;
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info->bps_max = cfg.buckets[THROTTLE_BPS_TOTAL].max;
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info->has_bps_rd_max = cfg.buckets[THROTTLE_BPS_READ].max;
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info->bps_rd_max = cfg.buckets[THROTTLE_BPS_READ].max;
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info->has_bps_wr_max = cfg.buckets[THROTTLE_BPS_WRITE].max;
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info->bps_wr_max = cfg.buckets[THROTTLE_BPS_WRITE].max;
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info->has_iops_max = cfg.buckets[THROTTLE_OPS_TOTAL].max;
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info->iops_max = cfg.buckets[THROTTLE_OPS_TOTAL].max;
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info->has_iops_rd_max = cfg.buckets[THROTTLE_OPS_READ].max;
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info->iops_rd_max = cfg.buckets[THROTTLE_OPS_READ].max;
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info->has_iops_wr_max = cfg.buckets[THROTTLE_OPS_WRITE].max;
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info->iops_wr_max = cfg.buckets[THROTTLE_OPS_WRITE].max;
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info->has_iops_size = cfg.op_size;
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info->iops_size = cfg.op_size;
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info->has_group = true;
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info->group = g_strdup(throttle_group_get_name(bs));
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}
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info->write_threshold = bdrv_write_threshold_get(bs);
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bs0 = bs;
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p_image_info = &info->image;
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while (1) {
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Error *local_err = NULL;
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bdrv_query_image_info(bs0, p_image_info, &local_err);
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if (local_err) {
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error_propagate(errp, local_err);
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qapi_free_BlockDeviceInfo(info);
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return NULL;
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}
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if (bs0->drv && bs0->backing_hd) {
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bs0 = bs0->backing_hd;
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(*p_image_info)->has_backing_image = true;
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p_image_info = &((*p_image_info)->backing_image);
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} else {
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break;
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}
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}
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return info;
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}
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/*
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* Returns 0 on success, with *p_list either set to describe snapshot
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* information, or NULL because there are no snapshots. Returns -errno on
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* error, with *p_list untouched.
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*/
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int bdrv_query_snapshot_info_list(BlockDriverState *bs,
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SnapshotInfoList **p_list,
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Error **errp)
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{
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int i, sn_count;
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QEMUSnapshotInfo *sn_tab = NULL;
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SnapshotInfoList *info_list, *cur_item = NULL, *head = NULL;
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SnapshotInfo *info;
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sn_count = bdrv_snapshot_list(bs, &sn_tab);
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if (sn_count < 0) {
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const char *dev = bdrv_get_device_name(bs);
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switch (sn_count) {
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case -ENOMEDIUM:
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error_setg(errp, "Device '%s' is not inserted", dev);
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break;
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case -ENOTSUP:
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error_setg(errp,
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"Device '%s' does not support internal snapshots",
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dev);
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break;
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default:
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error_setg_errno(errp, -sn_count,
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"Can't list snapshots of device '%s'", dev);
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break;
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}
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return sn_count;
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}
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for (i = 0; i < sn_count; i++) {
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info = g_new0(SnapshotInfo, 1);
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info->id = g_strdup(sn_tab[i].id_str);
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info->name = g_strdup(sn_tab[i].name);
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info->vm_state_size = sn_tab[i].vm_state_size;
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info->date_sec = sn_tab[i].date_sec;
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info->date_nsec = sn_tab[i].date_nsec;
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info->vm_clock_sec = sn_tab[i].vm_clock_nsec / 1000000000;
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info->vm_clock_nsec = sn_tab[i].vm_clock_nsec % 1000000000;
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info_list = g_new0(SnapshotInfoList, 1);
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info_list->value = info;
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/* XXX: waiting for the qapi to support qemu-queue.h types */
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if (!cur_item) {
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head = cur_item = info_list;
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} else {
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cur_item->next = info_list;
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cur_item = info_list;
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}
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}
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g_free(sn_tab);
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*p_list = head;
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return 0;
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}
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/**
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* bdrv_query_image_info:
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* @bs: block device to examine
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* @p_info: location to store image information
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* @errp: location to store error information
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*
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* Store "flat" image information in @p_info.
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*
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* "Flat" means it does *not* query backing image information,
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* i.e. (*pinfo)->has_backing_image will be set to false and
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* (*pinfo)->backing_image to NULL even when the image does in fact have
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* a backing image.
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*
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* @p_info will be set only on success. On error, store error in @errp.
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*/
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void bdrv_query_image_info(BlockDriverState *bs,
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ImageInfo **p_info,
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Error **errp)
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{
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int64_t size;
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const char *backing_filename;
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BlockDriverInfo bdi;
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int ret;
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Error *err = NULL;
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ImageInfo *info;
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size = bdrv_getlength(bs);
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if (size < 0) {
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error_setg_errno(errp, -size, "Can't get size of device '%s'",
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bdrv_get_device_name(bs));
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return;
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}
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info = g_new0(ImageInfo, 1);
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info->filename = g_strdup(bs->filename);
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info->format = g_strdup(bdrv_get_format_name(bs));
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info->virtual_size = size;
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info->actual_size = bdrv_get_allocated_file_size(bs);
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info->has_actual_size = info->actual_size >= 0;
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if (bdrv_is_encrypted(bs)) {
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info->encrypted = true;
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info->has_encrypted = true;
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}
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if (bdrv_get_info(bs, &bdi) >= 0) {
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if (bdi.cluster_size != 0) {
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info->cluster_size = bdi.cluster_size;
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info->has_cluster_size = true;
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}
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info->dirty_flag = bdi.is_dirty;
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info->has_dirty_flag = true;
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}
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info->format_specific = bdrv_get_specific_info(bs);
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info->has_format_specific = info->format_specific != NULL;
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backing_filename = bs->backing_file;
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if (backing_filename[0] != '\0') {
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char *backing_filename2 = g_malloc0(PATH_MAX);
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info->backing_filename = g_strdup(backing_filename);
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info->has_backing_filename = true;
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bdrv_get_full_backing_filename(bs, backing_filename2, PATH_MAX, &err);
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if (err) {
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error_propagate(errp, err);
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qapi_free_ImageInfo(info);
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g_free(backing_filename2);
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return;
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}
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if (strcmp(backing_filename, backing_filename2) != 0) {
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info->full_backing_filename =
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g_strdup(backing_filename2);
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info->has_full_backing_filename = true;
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}
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if (bs->backing_format[0]) {
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info->backing_filename_format = g_strdup(bs->backing_format);
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info->has_backing_filename_format = true;
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}
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g_free(backing_filename2);
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}
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ret = bdrv_query_snapshot_info_list(bs, &info->snapshots, &err);
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switch (ret) {
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case 0:
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if (info->snapshots) {
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info->has_snapshots = true;
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}
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break;
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/* recoverable error */
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case -ENOMEDIUM:
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case -ENOTSUP:
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error_free(err);
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break;
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default:
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error_propagate(errp, err);
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qapi_free_ImageInfo(info);
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return;
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}
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*p_info = info;
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}
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/* @p_info will be set only on success. */
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static void bdrv_query_info(BlockBackend *blk, BlockInfo **p_info,
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Error **errp)
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{
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BlockInfo *info = g_malloc0(sizeof(*info));
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BlockDriverState *bs = blk_bs(blk);
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info->device = g_strdup(blk_name(blk));
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info->type = g_strdup("unknown");
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info->locked = blk_dev_is_medium_locked(blk);
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info->removable = blk_dev_has_removable_media(blk);
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if (blk_dev_has_removable_media(blk)) {
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info->has_tray_open = true;
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info->tray_open = blk_dev_is_tray_open(blk);
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}
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if (bdrv_iostatus_is_enabled(bs)) {
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info->has_io_status = true;
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info->io_status = bs->iostatus;
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}
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if (!QLIST_EMPTY(&bs->dirty_bitmaps)) {
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info->has_dirty_bitmaps = true;
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info->dirty_bitmaps = bdrv_query_dirty_bitmaps(bs);
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}
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if (bs->drv) {
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info->has_inserted = true;
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info->inserted = bdrv_block_device_info(bs, errp);
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if (info->inserted == NULL) {
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goto err;
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}
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}
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*p_info = info;
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return;
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err:
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qapi_free_BlockInfo(info);
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}
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static BlockStats *bdrv_query_stats(const BlockDriverState *bs,
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bool query_backing)
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{
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BlockStats *s;
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s = g_malloc0(sizeof(*s));
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if (bdrv_get_device_name(bs)[0]) {
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s->has_device = true;
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s->device = g_strdup(bdrv_get_device_name(bs));
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}
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if (bdrv_get_node_name(bs)[0]) {
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s->has_node_name = true;
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s->node_name = g_strdup(bdrv_get_node_name(bs));
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}
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s->stats = g_malloc0(sizeof(*s->stats));
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s->stats->rd_bytes = bs->stats.nr_bytes[BLOCK_ACCT_READ];
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s->stats->wr_bytes = bs->stats.nr_bytes[BLOCK_ACCT_WRITE];
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s->stats->rd_operations = bs->stats.nr_ops[BLOCK_ACCT_READ];
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s->stats->wr_operations = bs->stats.nr_ops[BLOCK_ACCT_WRITE];
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s->stats->rd_merged = bs->stats.merged[BLOCK_ACCT_READ];
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s->stats->wr_merged = bs->stats.merged[BLOCK_ACCT_WRITE];
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s->stats->wr_highest_offset =
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bs->stats.wr_highest_sector * BDRV_SECTOR_SIZE;
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s->stats->flush_operations = bs->stats.nr_ops[BLOCK_ACCT_FLUSH];
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s->stats->wr_total_time_ns = bs->stats.total_time_ns[BLOCK_ACCT_WRITE];
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s->stats->rd_total_time_ns = bs->stats.total_time_ns[BLOCK_ACCT_READ];
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s->stats->flush_total_time_ns = bs->stats.total_time_ns[BLOCK_ACCT_FLUSH];
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if (bs->file) {
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s->has_parent = true;
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s->parent = bdrv_query_stats(bs->file, query_backing);
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}
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if (query_backing && bs->backing_hd) {
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s->has_backing = true;
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s->backing = bdrv_query_stats(bs->backing_hd, query_backing);
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}
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return s;
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}
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BlockInfoList *qmp_query_block(Error **errp)
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{
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BlockInfoList *head = NULL, **p_next = &head;
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BlockBackend *blk;
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Error *local_err = NULL;
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for (blk = blk_next(NULL); blk; blk = blk_next(blk)) {
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BlockInfoList *info = g_malloc0(sizeof(*info));
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bdrv_query_info(blk, &info->value, &local_err);
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if (local_err) {
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error_propagate(errp, local_err);
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goto err;
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}
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*p_next = info;
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p_next = &info->next;
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}
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return head;
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err:
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qapi_free_BlockInfoList(head);
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return NULL;
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}
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BlockStatsList *qmp_query_blockstats(bool has_query_nodes,
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bool query_nodes,
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Error **errp)
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{
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BlockStatsList *head = NULL, **p_next = &head;
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BlockDriverState *bs = NULL;
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/* Just to be safe if query_nodes is not always initialized */
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query_nodes = has_query_nodes && query_nodes;
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while ((bs = query_nodes ? bdrv_next_node(bs) : bdrv_next(bs))) {
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BlockStatsList *info = g_malloc0(sizeof(*info));
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AioContext *ctx = bdrv_get_aio_context(bs);
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aio_context_acquire(ctx);
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info->value = bdrv_query_stats(bs, !query_nodes);
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aio_context_release(ctx);
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*p_next = info;
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p_next = &info->next;
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}
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return head;
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}
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#define NB_SUFFIXES 4
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static char *get_human_readable_size(char *buf, int buf_size, int64_t size)
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{
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static const char suffixes[NB_SUFFIXES] = {'K', 'M', 'G', 'T'};
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int64_t base;
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int i;
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if (size <= 999) {
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snprintf(buf, buf_size, "%" PRId64, size);
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} else {
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base = 1024;
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for (i = 0; i < NB_SUFFIXES; i++) {
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if (size < (10 * base)) {
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snprintf(buf, buf_size, "%0.1f%c",
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(double)size / base,
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suffixes[i]);
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break;
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} else if (size < (1000 * base) || i == (NB_SUFFIXES - 1)) {
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snprintf(buf, buf_size, "%" PRId64 "%c",
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((size + (base >> 1)) / base),
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suffixes[i]);
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break;
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}
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base = base * 1024;
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}
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}
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return buf;
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}
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void bdrv_snapshot_dump(fprintf_function func_fprintf, void *f,
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QEMUSnapshotInfo *sn)
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{
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char buf1[128], date_buf[128], clock_buf[128];
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struct tm tm;
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time_t ti;
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int64_t secs;
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if (!sn) {
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func_fprintf(f,
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"%-10s%-20s%7s%20s%15s",
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"ID", "TAG", "VM SIZE", "DATE", "VM CLOCK");
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} else {
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ti = sn->date_sec;
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localtime_r(&ti, &tm);
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strftime(date_buf, sizeof(date_buf),
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"%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_QINT: {
|
|
QInt *value = qobject_to_qint(obj);
|
|
func_fprintf(f, "%" PRId64, qint_get_int(value));
|
|
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_QFLOAT: {
|
|
QFloat *value = qobject_to_qfloat(obj);
|
|
func_fprintf(f, "%g", qfloat_get_double(value));
|
|
break;
|
|
}
|
|
case QTYPE_QBOOL: {
|
|
QBool *value = qobject_to_qbool(obj);
|
|
func_fprintf(f, "%s", qbool_get_bool(value) ? "true" : "false");
|
|
break;
|
|
}
|
|
case QTYPE_QERROR: {
|
|
QString *value = qerror_human((QError *)obj);
|
|
func_fprintf(f, "%s", qstring_get_str(value));
|
|
QDECREF(value);
|
|
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_code type = qobject_type(entry->value);
|
|
bool composite = (type == QTYPE_QDICT || type == QTYPE_QLIST);
|
|
const char *format = composite ? "%*s[%i]:\n" : "%*s[%i]: ";
|
|
|
|
func_fprintf(f, format, indentation * 4, "", i);
|
|
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_code type = qobject_type(entry->value);
|
|
bool composite = (type == QTYPE_QDICT || type == QTYPE_QLIST);
|
|
const char *format = composite ? "%*s%s:\n" : "%*s%s: ";
|
|
char key[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, format, indentation * 4, "", key);
|
|
dump_qobject(func_fprintf, f, indentation + 1, entry->value);
|
|
if (!composite) {
|
|
func_fprintf(f, "\n");
|
|
}
|
|
}
|
|
}
|
|
|
|
void bdrv_image_info_specific_dump(fprintf_function func_fprintf, void *f,
|
|
ImageInfoSpecific *info_spec)
|
|
{
|
|
QmpOutputVisitor *ov = qmp_output_visitor_new();
|
|
QObject *obj, *data;
|
|
|
|
visit_type_ImageInfoSpecific(qmp_output_get_visitor(ov), &info_spec, NULL,
|
|
&error_abort);
|
|
obj = qmp_output_get_qobject(ov);
|
|
assert(qobject_type(obj) == QTYPE_QDICT);
|
|
data = qdict_get(qobject_to_qdict(obj), "data");
|
|
dump_qobject(func_fprintf, f, 1, data);
|
|
qmp_output_visitor_cleanup(ov);
|
|
}
|
|
|
|
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, " (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);
|
|
}
|
|
}
|