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Diffstat (limited to 'block/blkio.c')
-rw-r--r--block/blkio.c47
1 files changed, 43 insertions, 4 deletions
diff --git a/block/blkio.c b/block/blkio.c
index 82f26eedd2..620fab28a7 100644
--- a/block/blkio.c
+++ b/block/blkio.c
@@ -25,6 +25,7 @@
*/
#define DRIVER_IO_URING "io_uring"
#define DRIVER_NVME_IO_URING "nvme-io_uring"
+#define DRIVER_VIRTIO_BLK_VFIO_PCI "virtio-blk-vfio-pci"
#define DRIVER_VIRTIO_BLK_VHOST_USER "virtio-blk-vhost-user"
#define DRIVER_VIRTIO_BLK_VHOST_VDPA "virtio-blk-vhost-vdpa"
@@ -639,12 +640,17 @@ static int blkio_io_uring_open(BlockDriverState *bs, QDict *options, int flags,
static int blkio_nvme_io_uring(BlockDriverState *bs, QDict *options, int flags,
Error **errp)
{
- const char *filename = qdict_get_str(options, "filename");
+ const char *path = qdict_get_try_str(options, "path");
BDRVBlkioState *s = bs->opaque;
int ret;
- ret = blkio_set_str(s->blkio, "path", filename);
- qdict_del(options, "filename");
+ if (!path) {
+ error_setg(errp, "missing 'path' option");
+ return -EINVAL;
+ }
+
+ ret = blkio_set_str(s->blkio, "path", path);
+ qdict_del(options, "path");
if (ret < 0) {
error_setg_errno(errp, -ret, "failed to set path: %s",
blkio_get_error_msg());
@@ -704,6 +710,8 @@ static int blkio_file_open(BlockDriverState *bs, QDict *options, int flags,
ret = blkio_io_uring_open(bs, options, flags, errp);
} else if (strcmp(blkio_driver, DRIVER_NVME_IO_URING) == 0) {
ret = blkio_nvme_io_uring(bs, options, flags, errp);
+ } else if (strcmp(blkio_driver, DRIVER_VIRTIO_BLK_VFIO_PCI) == 0) {
+ ret = blkio_virtio_blk_common_open(bs, options, flags, errp);
} else if (strcmp(blkio_driver, DRIVER_VIRTIO_BLK_VHOST_USER) == 0) {
ret = blkio_virtio_blk_common_open(bs, options, flags, errp);
} else if (strcmp(blkio_driver, DRIVER_VIRTIO_BLK_VHOST_VDPA) == 0) {
@@ -845,6 +853,31 @@ static int64_t blkio_getlength(BlockDriverState *bs)
return capacity;
}
+static int coroutine_fn blkio_truncate(BlockDriverState *bs, int64_t offset,
+ bool exact, PreallocMode prealloc,
+ BdrvRequestFlags flags, Error **errp)
+{
+ int64_t current_length;
+
+ if (prealloc != PREALLOC_MODE_OFF) {
+ error_setg(errp, "Unsupported preallocation mode '%s'",
+ PreallocMode_str(prealloc));
+ return -ENOTSUP;
+ }
+
+ current_length = blkio_getlength(bs);
+
+ if (offset > current_length) {
+ error_setg(errp, "Cannot grow device");
+ return -EINVAL;
+ } else if (exact && offset != current_length) {
+ error_setg(errp, "Cannot resize device");
+ return -ENOTSUP;
+ }
+
+ return 0;
+}
+
static int blkio_get_info(BlockDriverState *bs, BlockDriverInfo *bdi)
{
return 0;
@@ -960,10 +993,12 @@ static void blkio_refresh_limits(BlockDriverState *bs, Error **errp)
{ \
.format_name = name, \
.protocol_name = name, \
+ .has_variable_length = true, \
.instance_size = sizeof(BDRVBlkioState), \
.bdrv_file_open = blkio_file_open, \
.bdrv_close = blkio_close, \
.bdrv_getlength = blkio_getlength, \
+ .bdrv_co_truncate = blkio_truncate, \
.bdrv_get_info = blkio_get_info, \
.bdrv_attach_aio_context = blkio_attach_aio_context, \
.bdrv_detach_aio_context = blkio_detach_aio_context, \
@@ -986,7 +1021,10 @@ static BlockDriver bdrv_io_uring = BLKIO_DRIVER(
static BlockDriver bdrv_nvme_io_uring = BLKIO_DRIVER(
DRIVER_NVME_IO_URING,
- .bdrv_needs_filename = true,
+);
+
+static BlockDriver bdrv_virtio_blk_vfio_pci = BLKIO_DRIVER(
+ DRIVER_VIRTIO_BLK_VFIO_PCI
);
static BlockDriver bdrv_virtio_blk_vhost_user = BLKIO_DRIVER(
@@ -1001,6 +1039,7 @@ static void bdrv_blkio_init(void)
{
bdrv_register(&bdrv_io_uring);
bdrv_register(&bdrv_nvme_io_uring);
+ bdrv_register(&bdrv_virtio_blk_vfio_pci);
bdrv_register(&bdrv_virtio_blk_vhost_user);
bdrv_register(&bdrv_virtio_blk_vhost_vdpa);
}