diff options
Diffstat (limited to 'block/vmdk.c')
| -rw-r--r-- | block/vmdk.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/block/vmdk.c b/block/vmdk.c index 06a1f9f93b..480ea37d7c 100644 --- a/block/vmdk.c +++ b/block/vmdk.c @@ -1496,6 +1496,19 @@ static coroutine_fn int vmdk_co_write(BlockDriverState *bs, int64_t sector_num, return ret; } +static int vmdk_write_compressed(BlockDriverState *bs, + int64_t sector_num, + const uint8_t *buf, + int nb_sectors) +{ + BDRVVmdkState *s = bs->opaque; + if (s->num_extents == 1 && s->extents[0].compressed) { + return vmdk_write(bs, sector_num, buf, nb_sectors, false, false); + } else { + return -ENOTSUP; + } +} + static int coroutine_fn vmdk_co_write_zeroes(BlockDriverState *bs, int64_t sector_num, int nb_sectors, @@ -2063,6 +2076,26 @@ static ImageInfoSpecific *vmdk_get_specific_info(BlockDriverState *bs) return spec_info; } +static int vmdk_get_info(BlockDriverState *bs, BlockDriverInfo *bdi) +{ + int i; + BDRVVmdkState *s = bs->opaque; + assert(s->num_extents); + bdi->needs_compressed_writes = s->extents[0].compressed; + if (!s->extents[0].flat) { + bdi->cluster_size = s->extents[0].cluster_sectors << BDRV_SECTOR_BITS; + } + /* See if we have multiple extents but they have different cases */ + for (i = 1; i < s->num_extents; i++) { + if (bdi->needs_compressed_writes != s->extents[i].compressed || + (bdi->cluster_size && bdi->cluster_size != + s->extents[i].cluster_sectors << BDRV_SECTOR_BITS)) { + return -ENOTSUP; + } + } + return 0; +} + static QEMUOptionParameter vmdk_create_options[] = { { .name = BLOCK_OPT_SIZE, @@ -2109,6 +2142,7 @@ static BlockDriver bdrv_vmdk = { .bdrv_reopen_prepare = vmdk_reopen_prepare, .bdrv_read = vmdk_co_read, .bdrv_write = vmdk_co_write, + .bdrv_write_compressed = vmdk_write_compressed, .bdrv_co_write_zeroes = vmdk_co_write_zeroes, .bdrv_close = vmdk_close, .bdrv_create = vmdk_create, @@ -2118,6 +2152,7 @@ static BlockDriver bdrv_vmdk = { .bdrv_has_zero_init = vmdk_has_zero_init, .bdrv_get_specific_info = vmdk_get_specific_info, .bdrv_refresh_limits = vmdk_refresh_limits, + .bdrv_get_info = vmdk_get_info, .create_options = vmdk_create_options, }; |