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-rw-r--r--block/parallels.c199
-rw-r--r--qapi/block-core.json18
2 files changed, 168 insertions, 49 deletions
diff --git a/block/parallels.c b/block/parallels.c
index c13cb619e6..2da5e56a9d 100644
--- a/block/parallels.c
+++ b/block/parallels.c
@@ -34,6 +34,9 @@
#include "sysemu/block-backend.h"
#include "qemu/module.h"
#include "qemu/option.h"
+#include "qapi/qmp/qdict.h"
+#include "qapi/qobject-input-visitor.h"
+#include "qapi/qapi-visit-block-core.h"
#include "qemu/bswap.h"
#include "qemu/bitmap.h"
#include "migration/blocker.h"
@@ -79,6 +82,25 @@ static QemuOptsList parallels_runtime_opts = {
},
};
+static QemuOptsList parallels_create_opts = {
+ .name = "parallels-create-opts",
+ .head = QTAILQ_HEAD_INITIALIZER(parallels_create_opts.head),
+ .desc = {
+ {
+ .name = BLOCK_OPT_SIZE,
+ .type = QEMU_OPT_SIZE,
+ .help = "Virtual disk size",
+ },
+ {
+ .name = BLOCK_OPT_CLUSTER_SIZE,
+ .type = QEMU_OPT_SIZE,
+ .help = "Parallels image cluster size",
+ .def_value_str = stringify(DEFAULT_CLUSTER_SIZE),
+ },
+ { /* end of list */ }
+ }
+};
+
static int64_t bat2sect(BDRVParallelsState *s, uint32_t idx)
{
@@ -480,46 +502,62 @@ out:
}
-static int coroutine_fn parallels_co_create_opts(const char *filename,
- QemuOpts *opts,
- Error **errp)
+static int coroutine_fn parallels_co_create(BlockdevCreateOptions* opts,
+ Error **errp)
{
+ BlockdevCreateOptionsParallels *parallels_opts;
+ BlockDriverState *bs;
+ BlockBackend *blk;
int64_t total_size, cl_size;
- uint8_t tmp[BDRV_SECTOR_SIZE];
- Error *local_err = NULL;
- BlockBackend *file;
uint32_t bat_entries, bat_sectors;
ParallelsHeader header;
+ uint8_t tmp[BDRV_SECTOR_SIZE];
int ret;
- total_size = ROUND_UP(qemu_opt_get_size_del(opts, BLOCK_OPT_SIZE, 0),
- BDRV_SECTOR_SIZE);
- cl_size = ROUND_UP(qemu_opt_get_size_del(opts, BLOCK_OPT_CLUSTER_SIZE,
- DEFAULT_CLUSTER_SIZE), BDRV_SECTOR_SIZE);
+ assert(opts->driver == BLOCKDEV_DRIVER_PARALLELS);
+ parallels_opts = &opts->u.parallels;
+
+ /* Sanity checks */
+ total_size = parallels_opts->size;
+
+ if (parallels_opts->has_cluster_size) {
+ cl_size = parallels_opts->cluster_size;
+ } else {
+ cl_size = DEFAULT_CLUSTER_SIZE;
+ }
+
if (total_size >= MAX_PARALLELS_IMAGE_FACTOR * cl_size) {
- error_propagate(errp, local_err);
+ error_setg(errp, "Image size is too large for this cluster size");
return -E2BIG;
}
- ret = bdrv_create_file(filename, opts, &local_err);
- if (ret < 0) {
- error_propagate(errp, local_err);
- return ret;
+ if (!QEMU_IS_ALIGNED(total_size, BDRV_SECTOR_SIZE)) {
+ error_setg(errp, "Image size must be a multiple of 512 bytes");
+ return -EINVAL;
}
- file = blk_new_open(filename, NULL, NULL,
- BDRV_O_RDWR | BDRV_O_RESIZE | BDRV_O_PROTOCOL,
- &local_err);
- if (file == NULL) {
- error_propagate(errp, local_err);
+ if (!QEMU_IS_ALIGNED(cl_size, BDRV_SECTOR_SIZE)) {
+ error_setg(errp, "Cluster size must be a multiple of 512 bytes");
+ return -EINVAL;
+ }
+
+ /* Create BlockBackend to write to the image */
+ bs = bdrv_open_blockdev_ref(parallels_opts->file, errp);
+ if (bs == NULL) {
return -EIO;
}
- blk_set_allow_write_beyond_eof(file, true);
+ 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);
- ret = blk_truncate(file, 0, PREALLOC_MODE_OFF, errp);
+ /* Create image format */
+ ret = blk_truncate(blk, 0, PREALLOC_MODE_OFF, errp);
if (ret < 0) {
- goto exit;
+ goto out;
}
bat_entries = DIV_ROUND_UP(total_size, cl_size);
@@ -542,24 +580,107 @@ static int coroutine_fn parallels_co_create_opts(const char *filename,
memset(tmp, 0, sizeof(tmp));
memcpy(tmp, &header, sizeof(header));
- ret = blk_pwrite(file, 0, tmp, BDRV_SECTOR_SIZE, 0);
+ ret = blk_pwrite(blk, 0, tmp, BDRV_SECTOR_SIZE, 0);
if (ret < 0) {
goto exit;
}
- ret = blk_pwrite_zeroes(file, BDRV_SECTOR_SIZE,
+ ret = blk_pwrite_zeroes(blk, BDRV_SECTOR_SIZE,
(bat_sectors - 1) << BDRV_SECTOR_BITS, 0);
if (ret < 0) {
goto exit;
}
- ret = 0;
-done:
- blk_unref(file);
+ ret = 0;
+out:
+ blk_unref(blk);
+ bdrv_unref(bs);
return ret;
exit:
error_setg_errno(errp, -ret, "Failed to create Parallels image");
- goto done;
+ goto out;
+}
+
+static int coroutine_fn parallels_co_create_opts(const char *filename,
+ QemuOpts *opts,
+ Error **errp)
+{
+ BlockdevCreateOptions *create_options = NULL;
+ Error *local_err = NULL;
+ BlockDriverState *bs = NULL;
+ QDict *qdict = NULL;
+ QObject *qobj;
+ Visitor *v;
+ int ret;
+
+ static const QDictRenames opt_renames[] = {
+ { BLOCK_OPT_CLUSTER_SIZE, "cluster-size" },
+ { NULL, NULL },
+ };
+
+ /* Parse options and convert legacy syntax */
+ qdict = qemu_opts_to_qdict_filtered(opts, NULL, &parallels_create_opts,
+ true);
+
+ if (!qdict_rename_keys(qdict, opt_renames, errp)) {
+ ret = -EINVAL;
+ goto done;
+ }
+
+ /* Create and open the file (protocol layer) */
+ ret = bdrv_create_file(filename, opts, &local_err);
+ if (ret < 0) {
+ error_propagate(errp, local_err);
+ goto done;
+ }
+
+ bs = bdrv_open(filename, NULL, NULL,
+ BDRV_O_RDWR | BDRV_O_RESIZE | BDRV_O_PROTOCOL, errp);
+ if (bs == NULL) {
+ ret = -EIO;
+ goto done;
+ }
+
+ /* Now get the QAPI type BlockdevCreateOptions */
+ qdict_put_str(qdict, "driver", "parallels");
+ 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 done;
+ }
+
+ 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 done;
+ }
+
+ /* Silently round up sizes */
+ create_options->u.parallels.size =
+ ROUND_UP(create_options->u.parallels.size, BDRV_SECTOR_SIZE);
+ create_options->u.parallels.cluster_size =
+ ROUND_UP(create_options->u.parallels.cluster_size, BDRV_SECTOR_SIZE);
+
+ /* Create the Parallels image (format layer) */
+ ret = parallels_co_create(create_options, errp);
+ if (ret < 0) {
+ goto done;
+ }
+ ret = 0;
+
+done:
+ QDECREF(qdict);
+ bdrv_unref(bs);
+ qapi_free_BlockdevCreateOptions(create_options);
+ return ret;
}
@@ -771,25 +892,6 @@ static void parallels_close(BlockDriverState *bs)
error_free(s->migration_blocker);
}
-static QemuOptsList parallels_create_opts = {
- .name = "parallels-create-opts",
- .head = QTAILQ_HEAD_INITIALIZER(parallels_create_opts.head),
- .desc = {
- {
- .name = BLOCK_OPT_SIZE,
- .type = QEMU_OPT_SIZE,
- .help = "Virtual disk size",
- },
- {
- .name = BLOCK_OPT_CLUSTER_SIZE,
- .type = QEMU_OPT_SIZE,
- .help = "Parallels image cluster size",
- .def_value_str = stringify(DEFAULT_CLUSTER_SIZE),
- },
- { /* end of list */ }
- }
-};
-
static BlockDriver bdrv_parallels = {
.format_name = "parallels",
.instance_size = sizeof(BDRVParallelsState),
@@ -803,6 +905,7 @@ static BlockDriver bdrv_parallels = {
.bdrv_co_readv = parallels_co_readv,
.bdrv_co_writev = parallels_co_writev,
.supports_backing = true,
+ .bdrv_co_create = parallels_co_create,
.bdrv_co_create_opts = parallels_co_create_opts,
.bdrv_co_check = parallels_co_check,
.create_opts = &parallels_create_opts,
diff --git a/qapi/block-core.json b/qapi/block-core.json
index e5bb84900c..352d47b803 100644
--- a/qapi/block-core.json
+++ b/qapi/block-core.json
@@ -3628,6 +3628,22 @@
'size': 'size' } }
##
+# @BlockdevCreateOptionsParallels:
+#
+# Driver specific image creation options for parallels.
+#
+# @file Node to create the image format on
+# @size Size of the virtual disk in bytes
+# @cluster-size Cluster size in bytes (default: 1 MB)
+#
+# Since: 2.12
+##
+{ 'struct': 'BlockdevCreateOptionsParallels',
+ 'data': { 'file': 'BlockdevRef',
+ 'size': 'size',
+ '*cluster-size': 'size' } }
+
+##
# @BlockdevQcow2Version:
#
# @v2: The original QCOW2 format as introduced in qemu 0.10 (version 2)
@@ -3829,7 +3845,7 @@
'null-aio': 'BlockdevCreateNotSupported',
'null-co': 'BlockdevCreateNotSupported',
'nvme': 'BlockdevCreateNotSupported',
- 'parallels': 'BlockdevCreateNotSupported',
+ 'parallels': 'BlockdevCreateOptionsParallels',
'qcow2': 'BlockdevCreateOptionsQcow2',
'qcow': 'BlockdevCreateNotSupported',
'qed': 'BlockdevCreateNotSupported',
generated by cgit v1.2.3 (git 2.26.2) at 2024-12-15 11:46:09 +0000