diff options
Diffstat (limited to 'block')
| -rw-r--r-- | block/qed.c | 204 |
1 files changed, 138 insertions, 66 deletions
diff --git a/block/qed.c b/block/qed.c index 5e6a6bf..46a84be 100644 --- a/block/qed.c +++ b/block/qed.c @@ -20,6 +20,11 @@ #include "trace.h" #include "qed.h" #include "sysemu/block-backend.h" +#include "qapi/qmp/qdict.h" +#include "qapi/qobject-input-visitor.h" +#include "qapi/qapi-visit-block-core.h" + +static QemuOptsList qed_create_opts; static int bdrv_qed_probe(const uint8_t *buf, int buf_size, const char *filename) @@ -594,57 +599,95 @@ static void bdrv_qed_close(BlockDriverState *bs) qemu_vfree(s->l1_table); } -static int qed_create(const char *filename, uint32_t cluster_size, - uint64_t image_size, uint32_t table_size, - const char *backing_file, const char *backing_fmt, - QemuOpts *opts, Error **errp) +static int coroutine_fn bdrv_qed_co_create(BlockdevCreateOptions *opts, + Error **errp) { - QEDHeader header = { - .magic = QED_MAGIC, - .cluster_size = cluster_size, - .table_size = table_size, - .header_size = 1, - .features = 0, - .compat_features = 0, - .l1_table_offset = cluster_size, - .image_size = image_size, - }; + BlockdevCreateOptionsQed *qed_opts; + BlockBackend *blk = NULL; + BlockDriverState *bs = NULL; + + QEDHeader header; QEDHeader le_header; uint8_t *l1_table = NULL; - size_t l1_size = header.cluster_size * header.table_size; - Error *local_err = NULL; + size_t l1_size; int ret = 0; - BlockBackend *blk; - ret = bdrv_create_file(filename, opts, &local_err); - if (ret < 0) { - error_propagate(errp, local_err); - return ret; + assert(opts->driver == BLOCKDEV_DRIVER_QED); + qed_opts = &opts->u.qed; + + /* Validate options and set default values */ + if (!qed_opts->has_cluster_size) { + qed_opts->cluster_size = QED_DEFAULT_CLUSTER_SIZE; + } + if (!qed_opts->has_table_size) { + qed_opts->table_size = QED_DEFAULT_TABLE_SIZE; } - blk = blk_new_open(filename, NULL, NULL, - BDRV_O_RDWR | BDRV_O_RESIZE | BDRV_O_PROTOCOL, - &local_err); - if (blk == NULL) { - error_propagate(errp, local_err); + if (!qed_is_cluster_size_valid(qed_opts->cluster_size)) { + error_setg(errp, "QED cluster size must be within range [%u, %u] " + "and power of 2", + QED_MIN_CLUSTER_SIZE, QED_MAX_CLUSTER_SIZE); + return -EINVAL; + } + if (!qed_is_table_size_valid(qed_opts->table_size)) { + error_setg(errp, "QED table size must be within range [%u, %u] " + "and power of 2", + QED_MIN_TABLE_SIZE, QED_MAX_TABLE_SIZE); + return -EINVAL; + } + if (!qed_is_image_size_valid(qed_opts->size, qed_opts->cluster_size, + qed_opts->table_size)) + { + error_setg(errp, "QED image size must be a non-zero multiple of " + "cluster size and less than %" PRIu64 " bytes", + qed_max_image_size(qed_opts->cluster_size, + qed_opts->table_size)); + return -EINVAL; + } + + /* Create BlockBackend to write to the image */ + bs = bdrv_open_blockdev_ref(qed_opts->file, errp); + if (bs == NULL) { return -EIO; } + blk = blk_new(BLK_PERM_WRITE | BLK_PERM_RESIZE, BLK_PERM_ALL); + ret = blk_insert_bs(blk, bs, errp); + if (ret < 0) { + goto out; + } blk_set_allow_write_beyond_eof(blk, true); + /* Prepare image format */ + header = (QEDHeader) { + .magic = QED_MAGIC, + .cluster_size = qed_opts->cluster_size, + .table_size = qed_opts->table_size, + .header_size = 1, + .features = 0, + .compat_features = 0, + .l1_table_offset = qed_opts->cluster_size, + .image_size = qed_opts->size, + }; + + l1_size = header.cluster_size * header.table_size; + /* File must start empty and grow, check truncate is supported */ ret = blk_truncate(blk, 0, PREALLOC_MODE_OFF, errp); if (ret < 0) { goto out; } - if (backing_file) { + if (qed_opts->has_backing_file) { header.features |= QED_F_BACKING_FILE; header.backing_filename_offset = sizeof(le_header); - header.backing_filename_size = strlen(backing_file); + header.backing_filename_size = strlen(qed_opts->backing_file); - if (qed_fmt_is_raw(backing_fmt)) { - header.features |= QED_F_BACKING_FORMAT_NO_PROBE; + if (qed_opts->has_backing_fmt) { + const char *backing_fmt = BlockdevDriver_str(qed_opts->backing_fmt); + if (qed_fmt_is_raw(backing_fmt)) { + header.features |= QED_F_BACKING_FORMAT_NO_PROBE; + } } } @@ -653,7 +696,7 @@ static int qed_create(const char *filename, uint32_t cluster_size, if (ret < 0) { goto out; } - ret = blk_pwrite(blk, sizeof(le_header), backing_file, + ret = blk_pwrite(blk, sizeof(le_header), qed_opts->backing_file, header.backing_filename_size, 0); if (ret < 0) { goto out; @@ -669,6 +712,7 @@ static int qed_create(const char *filename, uint32_t cluster_size, out: g_free(l1_table); blk_unref(blk); + bdrv_unref(bs); return ret; } @@ -676,51 +720,78 @@ static int coroutine_fn bdrv_qed_co_create_opts(const char *filename, QemuOpts *opts, Error **errp) { - uint64_t image_size = 0; - uint32_t cluster_size = QED_DEFAULT_CLUSTER_SIZE; - uint32_t table_size = QED_DEFAULT_TABLE_SIZE; - char *backing_file = NULL; - char *backing_fmt = NULL; + BlockdevCreateOptions *create_options = NULL; + QDict *qdict = NULL; + QObject *qobj; + Visitor *v; + BlockDriverState *bs = NULL; + Error *local_err = NULL; int ret; - image_size = ROUND_UP(qemu_opt_get_size_del(opts, BLOCK_OPT_SIZE, 0), - BDRV_SECTOR_SIZE); - backing_file = qemu_opt_get_del(opts, BLOCK_OPT_BACKING_FILE); - backing_fmt = qemu_opt_get_del(opts, BLOCK_OPT_BACKING_FMT); - cluster_size = qemu_opt_get_size_del(opts, - BLOCK_OPT_CLUSTER_SIZE, - QED_DEFAULT_CLUSTER_SIZE); - table_size = qemu_opt_get_size_del(opts, BLOCK_OPT_TABLE_SIZE, - QED_DEFAULT_TABLE_SIZE); - - if (!qed_is_cluster_size_valid(cluster_size)) { - error_setg(errp, "QED cluster size must be within range [%u, %u] " - "and power of 2", - QED_MIN_CLUSTER_SIZE, QED_MAX_CLUSTER_SIZE); + static const QDictRenames opt_renames[] = { + { BLOCK_OPT_BACKING_FILE, "backing-file" }, + { BLOCK_OPT_BACKING_FMT, "backing-fmt" }, + { BLOCK_OPT_CLUSTER_SIZE, "cluster-size" }, + { BLOCK_OPT_TABLE_SIZE, "table-size" }, + { NULL, NULL }, + }; + + /* Parse options and convert legacy syntax */ + qdict = qemu_opts_to_qdict_filtered(opts, NULL, &qed_create_opts, true); + + if (!qdict_rename_keys(qdict, opt_renames, errp)) { ret = -EINVAL; - goto finish; + goto fail; } - if (!qed_is_table_size_valid(table_size)) { - error_setg(errp, "QED table size must be within range [%u, %u] " - "and power of 2", - QED_MIN_TABLE_SIZE, QED_MAX_TABLE_SIZE); + + /* Create and open the file (protocol layer) */ + ret = bdrv_create_file(filename, opts, &local_err); + if (ret < 0) { + error_propagate(errp, local_err); + goto fail; + } + + bs = bdrv_open(filename, NULL, NULL, + BDRV_O_RDWR | BDRV_O_RESIZE | BDRV_O_PROTOCOL, errp); + if (bs == NULL) { + ret = -EIO; + goto fail; + } + + /* Now get the QAPI type BlockdevCreateOptions */ + qdict_put_str(qdict, "driver", "qed"); + qdict_put_str(qdict, "file", bs->node_name); + + qobj = qdict_crumple(qdict, errp); + QDECREF(qdict); + qdict = qobject_to_qdict(qobj); + if (qdict == NULL) { ret = -EINVAL; - goto finish; + goto fail; } - if (!qed_is_image_size_valid(image_size, cluster_size, table_size)) { - error_setg(errp, "QED image size must be a non-zero multiple of " - "cluster size and less than %" PRIu64 " bytes", - qed_max_image_size(cluster_size, table_size)); + + v = qobject_input_visitor_new_keyval(QOBJECT(qdict)); + visit_type_BlockdevCreateOptions(v, NULL, &create_options, &local_err); + visit_free(v); + + if (local_err) { + error_propagate(errp, local_err); ret = -EINVAL; - goto finish; + goto fail; } - ret = qed_create(filename, cluster_size, image_size, table_size, - backing_file, backing_fmt, opts, errp); + /* Silently round up size */ + assert(create_options->driver == BLOCKDEV_DRIVER_QED); + create_options->u.qed.size = + ROUND_UP(create_options->u.qed.size, BDRV_SECTOR_SIZE); + + /* Create the qed image (format layer) */ + ret = bdrv_qed_co_create(create_options, errp); -finish: - g_free(backing_file); - g_free(backing_fmt); +fail: + QDECREF(qdict); + bdrv_unref(bs); + qapi_free_BlockdevCreateOptions(create_options); return ret; } @@ -1602,6 +1673,7 @@ static BlockDriver bdrv_qed = { .bdrv_close = bdrv_qed_close, .bdrv_reopen_prepare = bdrv_qed_reopen_prepare, .bdrv_child_perm = bdrv_format_default_perms, + .bdrv_co_create = bdrv_qed_co_create, .bdrv_co_create_opts = bdrv_qed_co_create_opts, .bdrv_has_zero_init = bdrv_has_zero_init_1, .bdrv_co_block_status = bdrv_qed_co_block_status, |