diff options
Diffstat (limited to 'block/qapi.c')
| -rw-r--r-- | block/qapi.c | 366 |
1 files changed, 366 insertions, 0 deletions
diff --git a/block/qapi.c b/block/qapi.c new file mode 100644 index 0000000000..794dbf8fe8 --- /dev/null +++ b/block/qapi.c @@ -0,0 +1,366 @@ +/* + * 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; +} + +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); + } +} + +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"); + } + } +} |