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authorWenchao Xia <xiawenc@linux.vnet.ibm.com>2013-05-25 11:09:44 +0800
committerKevin Wolf <kwolf@redhat.com>2013-06-04 13:56:30 +0200
commitf364ec65b56b69c55b674cb6560aa1fbbea9e013 (patch)
tree69c599a8c75d2c7f76f660913f4cd4e100c1b829 /block
parentde08c606f9ddafe647b6843e2b10a6d6030b0fc0 (diff)
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block: move qmp and info dump related code to block/qapi.c
This patch is a pure code move patch, except following modification: 1 get_human_readable_size() is changed to static function. 2 dump_human_image_info() is renamed to bdrv_image_info_dump(). 3 in qmp_query_block() and qmp_query_blockstats, use bdrv_next(bs) instead of direct traverse of global array 'bdrv_states'. 4 collect_snapshots() and collect_image_info() are renamed, unused parameter *fmt in collect_image_info() is removed. 5 code style fix. To avoid conflict and tip better, macro in header file is BLOCK_QAPI_H instead of QAPI_H. Now block.h and snapshot.h are at the same level in include path, block_int.h and qapi.h will both include them. Signed-off-by: Wenchao Xia <xiawenc@linux.vnet.ibm.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'block')
-rw-r--r--block/Makefile.objs2
-rw-r--r--block/qapi.c360
2 files changed, 361 insertions, 1 deletions
diff --git a/block/Makefile.objs b/block/Makefile.objs
index 8670999..2981654 100644
--- a/block/Makefile.objs
+++ b/block/Makefile.objs
@@ -4,7 +4,7 @@ block-obj-y += qed.o qed-gencb.o qed-l2-cache.o qed-table.o qed-cluster.o
block-obj-y += qed-check.o
block-obj-y += vhdx.o
block-obj-y += parallels.o blkdebug.o blkverify.o
-block-obj-y += snapshot.o
+block-obj-y += snapshot.o qapi.o
block-obj-$(CONFIG_WIN32) += raw-win32.o win32-aio.o
block-obj-$(CONFIG_POSIX) += raw-posix.o
block-obj-$(CONFIG_LINUX_AIO) += linux-aio.o
diff --git a/block/qapi.c b/block/qapi.c
new file mode 100644
index 0000000..155e77e
--- /dev/null
+++ b/block/qapi.c
@@ -0,0 +1,360 @@
+/*
+ * 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 "block/qapi.h"
+#include "block/block_int.h"
+#include "qmp-commands.h"
+
+void bdrv_collect_snapshots(BlockDriverState *bs , ImageInfo *info)
+{
+ int i, sn_count;
+ QEMUSnapshotInfo *sn_tab = NULL;
+ SnapshotInfoList *info_list, *cur_item = NULL;
+ sn_count = bdrv_snapshot_list(bs, &sn_tab);
+
+ for (i = 0; i < sn_count; i++) {
+ info->has_snapshots = true;
+ info_list = g_new0(SnapshotInfoList, 1);
+
+ info_list->value = g_new0(SnapshotInfo, 1);
+ info_list->value->id = g_strdup(sn_tab[i].id_str);
+ info_list->value->name = g_strdup(sn_tab[i].name);
+ info_list->value->vm_state_size = sn_tab[i].vm_state_size;
+ info_list->value->date_sec = sn_tab[i].date_sec;
+ info_list->value->date_nsec = sn_tab[i].date_nsec;
+ info_list->value->vm_clock_sec = sn_tab[i].vm_clock_nsec / 1000000000;
+ info_list->value->vm_clock_nsec = sn_tab[i].vm_clock_nsec % 1000000000;
+
+ /* XXX: waiting for the qapi to support qemu-queue.h types */
+ if (!cur_item) {
+ info->snapshots = cur_item = info_list;
+ } else {
+ cur_item->next = info_list;
+ cur_item = info_list;
+ }
+
+ }
+
+ g_free(sn_tab);
+}
+
+void bdrv_collect_image_info(BlockDriverState *bs,
+ ImageInfo *info,
+ const char *filename)
+{
+ uint64_t total_sectors;
+ char backing_filename[1024];
+ char backing_filename2[1024];
+ BlockDriverInfo bdi;
+
+ bdrv_get_geometry(bs, &total_sectors);
+
+ info->filename = g_strdup(filename);
+ info->format = g_strdup(bdrv_get_format_name(bs));
+ info->virtual_size = total_sectors * 512;
+ 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;
+ }
+ bdrv_get_backing_filename(bs, backing_filename, sizeof(backing_filename));
+ if (backing_filename[0] != '\0') {
+ info->backing_filename = g_strdup(backing_filename);
+ info->has_backing_filename = true;
+ bdrv_get_full_backing_filename(bs, backing_filename2,
+ sizeof(backing_filename2));
+
+ if (strcmp(backing_filename, backing_filename2) != 0) {
+ 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;
+ }
+ }
+}
+
+BlockInfo *bdrv_query_info(BlockDriverState *bs)
+{
+ BlockInfo *info = g_malloc0(sizeof(*info));
+ info->device = g_strdup(bs->device_name);
+ info->type = g_strdup("unknown");
+ info->locked = bdrv_dev_is_medium_locked(bs);
+ info->removable = bdrv_dev_has_removable_media(bs);
+
+ if (bdrv_dev_has_removable_media(bs)) {
+ info->has_tray_open = true;
+ info->tray_open = bdrv_dev_is_tray_open(bs);
+ }
+
+ if (bdrv_iostatus_is_enabled(bs)) {
+ info->has_io_status = true;
+ info->io_status = bs->iostatus;
+ }
+
+ if (bs->dirty_bitmap) {
+ info->has_dirty = true;
+ info->dirty = g_malloc0(sizeof(*info->dirty));
+ info->dirty->count = bdrv_get_dirty_count(bs) * BDRV_SECTOR_SIZE;
+ info->dirty->granularity =
+ ((int64_t) BDRV_SECTOR_SIZE << hbitmap_granularity(bs->dirty_bitmap));
+ }
+
+ if (bs->drv) {
+ info->has_inserted = true;
+ info->inserted = g_malloc0(sizeof(*info->inserted));
+ info->inserted->file = g_strdup(bs->filename);
+ info->inserted->ro = bs->read_only;
+ info->inserted->drv = g_strdup(bs->drv->format_name);
+ info->inserted->encrypted = bs->encrypted;
+ info->inserted->encryption_key_missing = bdrv_key_required(bs);
+
+ if (bs->backing_file[0]) {
+ info->inserted->has_backing_file = true;
+ info->inserted->backing_file = g_strdup(bs->backing_file);
+ }
+
+ info->inserted->backing_file_depth = bdrv_get_backing_file_depth(bs);
+
+ if (bs->io_limits_enabled) {
+ info->inserted->bps =
+ bs->io_limits.bps[BLOCK_IO_LIMIT_TOTAL];
+ info->inserted->bps_rd =
+ bs->io_limits.bps[BLOCK_IO_LIMIT_READ];
+ info->inserted->bps_wr =
+ bs->io_limits.bps[BLOCK_IO_LIMIT_WRITE];
+ info->inserted->iops =
+ bs->io_limits.iops[BLOCK_IO_LIMIT_TOTAL];
+ info->inserted->iops_rd =
+ bs->io_limits.iops[BLOCK_IO_LIMIT_READ];
+ info->inserted->iops_wr =
+ bs->io_limits.iops[BLOCK_IO_LIMIT_WRITE];
+ }
+ }
+ return info;
+}
+
+BlockStats *bdrv_query_stats(const BlockDriverState *bs)
+{
+ BlockStats *s;
+
+ s = g_malloc0(sizeof(*s));
+
+ if (bs->device_name[0]) {
+ s->has_device = true;
+ s->device = g_strdup(bs->device_name);
+ }
+
+ s->stats = g_malloc0(sizeof(*s->stats));
+ s->stats->rd_bytes = bs->nr_bytes[BDRV_ACCT_READ];
+ s->stats->wr_bytes = bs->nr_bytes[BDRV_ACCT_WRITE];
+ s->stats->rd_operations = bs->nr_ops[BDRV_ACCT_READ];
+ s->stats->wr_operations = bs->nr_ops[BDRV_ACCT_WRITE];
+ s->stats->wr_highest_offset = bs->wr_highest_sector * BDRV_SECTOR_SIZE;
+ s->stats->flush_operations = bs->nr_ops[BDRV_ACCT_FLUSH];
+ s->stats->wr_total_time_ns = bs->total_time_ns[BDRV_ACCT_WRITE];
+ s->stats->rd_total_time_ns = bs->total_time_ns[BDRV_ACCT_READ];
+ s->stats->flush_total_time_ns = bs->total_time_ns[BDRV_ACCT_FLUSH];
+
+ if (bs->file) {
+ s->has_parent = true;
+ s->parent = bdrv_query_stats(bs->file);
+ }
+
+ return s;
+}
+
+BlockInfoList *qmp_query_block(Error **errp)
+{
+ BlockInfoList *head = NULL, **p_next = &head;
+ BlockDriverState *bs = NULL;
+
+ while ((bs = bdrv_next(bs))) {
+ BlockInfoList *info = g_malloc0(sizeof(*info));
+ info->value = bdrv_query_info(bs);
+
+ *p_next = info;
+ p_next = &info->next;
+ }
+
+ return head;
+}
+
+BlockStatsList *qmp_query_blockstats(Error **errp)
+{
+ BlockStatsList *head = NULL, **p_next = &head;
+ BlockDriverState *bs = NULL;
+
+ while ((bs = bdrv_next(bs))) {
+ BlockStatsList *info = g_malloc0(sizeof(*info));
+ info->value = bdrv_query_stats(bs);
+
+ *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] = "KMGT";
+ 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;
+}
+
+char *bdrv_snapshot_dump(char *buf, int buf_size, QEMUSnapshotInfo *sn)
+{
+ char buf1[128], date_buf[128], clock_buf[128];
+ struct tm tm;
+ time_t ti;
+ int64_t secs;
+
+ if (!sn) {
+ snprintf(buf, buf_size,
+ "%-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));
+ snprintf(buf, buf_size,
+ "%-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);
+ }
+ return buf;
+}
+
+void bdrv_image_info_dump(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);
+ printf("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) {
+ printf("encrypted: yes\n");
+ }
+
+ if (info->has_cluster_size) {
+ printf("cluster_size: %" PRId64 "\n", info->cluster_size);
+ }
+
+ if (info->has_dirty_flag && info->dirty_flag) {
+ printf("cleanly shut down: no\n");
+ }
+
+ if (info->has_backing_filename) {
+ printf("backing file: %s", info->backing_filename);
+ if (info->has_full_backing_filename) {
+ printf(" (actual path: %s)", info->full_backing_filename);
+ }
+ putchar('\n');
+ if (info->has_backing_filename_format) {
+ printf("backing file format: %s\n", info->backing_filename_format);
+ }
+ }
+
+ if (info->has_snapshots) {
+ SnapshotInfoList *elem;
+ char buf[256];
+
+ printf("Snapshot list:\n");
+ printf("%s\n", bdrv_snapshot_dump(buf, sizeof(buf), NULL));
+
+ /* 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);
+ printf("%s\n", bdrv_snapshot_dump(buf, sizeof(buf), &sn));
+ }
+ }
+}