diff options
Diffstat (limited to 'qemu-img.c')
| -rw-r--r-- | qemu-img.c | 259 |
1 files changed, 204 insertions, 55 deletions
diff --git a/qemu-img.c b/qemu-img.c index b41e670a6..f17f1872d 100644 --- a/qemu-img.c +++ b/qemu-img.c @@ -21,12 +21,16 @@ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ +#include "qapi-visit.h" +#include "qapi/qmp-output-visitor.h" +#include "qjson.h" #include "qemu-common.h" #include "qemu-option.h" #include "qemu-error.h" #include "osdep.h" #include "sysemu.h" #include "block_int.h" +#include <getopt.h> #include <stdio.h> #ifdef _WIN32 @@ -84,12 +88,13 @@ static void help(void) " '-p' show progress of command (only certain commands)\n" " '-S' indicates the consecutive number of bytes that must contain only zeros\n" " for qemu-img to create a sparse image during conversion\n" + " '--output' takes the format in which the output must be done (human or json)\n" "\n" "Parameters to check subcommand:\n" " '-r' tries to repair any inconsistencies that are found during the check.\n" " '-r leaks' repairs only cluster leaks, whereas '-r all' fixes all\n" " kinds of errors, with a higher risk of choosing the wrong fix or\n" - " hiding corruption that has already occured.\n" + " hiding corruption that has already occurred.\n" "\n" "Parameters to snapshot subcommand:\n" " 'snapshot' is the name of the snapshot to create, apply or delete\n" @@ -221,7 +226,8 @@ static int print_block_option_help(const char *filename, const char *fmt) static BlockDriverState *bdrv_new_open(const char *filename, const char *fmt, - int flags) + int flags, + bool require_io) { BlockDriverState *bs; BlockDriver *drv; @@ -246,7 +252,7 @@ static BlockDriverState *bdrv_new_open(const char *filename, goto fail; } - if (bdrv_is_encrypted(bs)) { + if (bdrv_is_encrypted(bs) && require_io) { printf("Disk image '%s' is encrypted.\n", filename); if (read_password(password, sizeof(password)) < 0) { error_report("No password given"); @@ -413,7 +419,7 @@ static int img_check(int argc, char **argv) } filename = argv[optind++]; - bs = bdrv_new_open(filename, fmt, flags); + bs = bdrv_new_open(filename, fmt, flags, true); if (!bs) { return 1; } @@ -520,7 +526,7 @@ static int img_commit(int argc, char **argv) return -1; } - bs = bdrv_new_open(filename, fmt, flags); + bs = bdrv_new_open(filename, fmt, flags, true); if (!bs) { return 1; } @@ -762,7 +768,7 @@ static int img_convert(int argc, char **argv) total_sectors = 0; for (bs_i = 0; bs_i < bs_n; bs_i++) { - bs[bs_i] = bdrv_new_open(argv[optind + bs_i], fmt, BDRV_O_FLAGS); + bs[bs_i] = bdrv_new_open(argv[optind + bs_i], fmt, BDRV_O_FLAGS, true); if (!bs[bs_i]) { error_report("Could not open '%s'", argv[optind + bs_i]); ret = -1; @@ -881,7 +887,7 @@ static int img_convert(int argc, char **argv) return -1; } - out_bs = bdrv_new_open(out_filename, out_fmt, flags); + out_bs = bdrv_new_open(out_filename, out_fmt, flags, true); if (!out_bs) { ret = -1; goto out; @@ -1102,21 +1108,174 @@ static void dump_snapshots(BlockDriverState *bs) g_free(sn_tab); } -static int img_info(int argc, char **argv) +static void 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); +} + +static void dump_json_image_info(ImageInfo *info) +{ + Error *errp = NULL; + QString *str; + QmpOutputVisitor *ov = qmp_output_visitor_new(); + QObject *obj; + visit_type_ImageInfo(qmp_output_get_visitor(ov), + &info, NULL, &errp); + obj = qmp_output_get_qobject(ov); + str = qobject_to_json_pretty(obj); + assert(str != NULL); + printf("%s\n", qstring_get_str(str)); + qobject_decref(obj); + qmp_output_visitor_cleanup(ov); + QDECREF(str); +} + +static void collect_image_info(BlockDriverState *bs, + ImageInfo *info, + const char *filename, + const char *fmt) { - int c; - const char *filename, *fmt; - BlockDriverState *bs; - char size_buf[128], dsize_buf[128]; uint64_t total_sectors; - int64_t allocated_size; 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; + } + } +} + +static void dump_human_image_info(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); + } + } +} + +enum {OPTION_OUTPUT = 256}; + +typedef enum OutputFormat { + OFORMAT_JSON, + OFORMAT_HUMAN, +} OutputFormat; + +static int img_info(int argc, char **argv) +{ + int c; + OutputFormat output_format = OFORMAT_HUMAN; + const char *filename, *fmt, *output; + BlockDriverState *bs; + ImageInfo *info; + fmt = NULL; + output = NULL; for(;;) { - c = getopt(argc, argv, "f:h"); + int option_index = 0; + static const struct option long_options[] = { + {"help", no_argument, 0, 'h'}, + {"format", required_argument, 0, 'f'}, + {"output", required_argument, 0, OPTION_OUTPUT}, + {0, 0, 0, 0} + }; + c = getopt_long(argc, argv, "f:h", + long_options, &option_index); if (c == -1) { break; } @@ -1128,6 +1287,9 @@ static int img_info(int argc, char **argv) case 'f': fmt = optarg; break; + case OPTION_OUTPUT: + output = optarg; + break; } } if (optind >= argc) { @@ -1135,48 +1297,35 @@ static int img_info(int argc, char **argv) } filename = argv[optind++]; - bs = bdrv_new_open(filename, fmt, BDRV_O_FLAGS | BDRV_O_NO_BACKING); - if (!bs) { + if (output && !strcmp(output, "json")) { + output_format = OFORMAT_JSON; + } else if (output && !strcmp(output, "human")) { + output_format = OFORMAT_HUMAN; + } else if (output) { + error_report("--output must be used with human or json as argument."); return 1; } - bdrv_get_geometry(bs, &total_sectors); - get_human_readable_size(size_buf, sizeof(size_buf), total_sectors * 512); - allocated_size = bdrv_get_allocated_file_size(bs); - if (allocated_size < 0) { - snprintf(dsize_buf, sizeof(dsize_buf), "unavailable"); - } else { - get_human_readable_size(dsize_buf, sizeof(dsize_buf), - allocated_size); - } - printf("image: %s\n" - "file format: %s\n" - "virtual size: %s (%" PRId64 " bytes)\n" - "disk size: %s\n", - filename, bdrv_get_format_name(bs), size_buf, - (total_sectors * 512), - dsize_buf); - if (bdrv_is_encrypted(bs)) { - printf("encrypted: yes\n"); - } - if (bdrv_get_info(bs, &bdi) >= 0) { - if (bdi.cluster_size != 0) { - printf("cluster_size: %d\n", bdi.cluster_size); - } - if (bdi.is_dirty) { - printf("cleanly shut down: no\n"); - } + + bs = bdrv_new_open(filename, fmt, BDRV_O_FLAGS | BDRV_O_NO_BACKING, false); + if (!bs) { + return 1; } - bdrv_get_backing_filename(bs, backing_filename, sizeof(backing_filename)); - if (backing_filename[0] != '\0') { - bdrv_get_full_backing_filename(bs, backing_filename2, - sizeof(backing_filename2)); - printf("backing file: %s", backing_filename); - if (strcmp(backing_filename, backing_filename2) != 0) { - printf(" (actual path: %s)", backing_filename2); - } - putchar('\n'); + + info = g_new0(ImageInfo, 1); + collect_image_info(bs, info, filename, fmt); + + switch (output_format) { + case OFORMAT_HUMAN: + dump_human_image_info(info); + dump_snapshots(bs); + break; + case OFORMAT_JSON: + collect_snapshots(bs, info); + dump_json_image_info(info); + break; } - dump_snapshots(bs); + + qapi_free_ImageInfo(info); bdrv_delete(bs); return 0; } @@ -1248,7 +1397,7 @@ static int img_snapshot(int argc, char **argv) filename = argv[optind++]; /* Open the image */ - bs = bdrv_new_open(filename, NULL, bdrv_oflags); + bs = bdrv_new_open(filename, NULL, bdrv_oflags, true); if (!bs) { return 1; } @@ -1366,7 +1515,7 @@ static int img_rebase(int argc, char **argv) * Ignore the old backing file for unsafe rebase in case we want to correct * the reference to a renamed or moved backing file. */ - bs = bdrv_new_open(filename, fmt, flags); + bs = bdrv_new_open(filename, fmt, flags, true); if (!bs) { return 1; } @@ -1639,7 +1788,7 @@ static int img_resize(int argc, char **argv) n = qemu_opt_get_size(param, BLOCK_OPT_SIZE, 0); qemu_opts_del(param); - bs = bdrv_new_open(filename, fmt, BDRV_O_FLAGS | BDRV_O_RDWR); + bs = bdrv_new_open(filename, fmt, BDRV_O_FLAGS | BDRV_O_RDWR, true); if (!bs) { ret = -1; goto out; |