diff options
| -rw-r--r-- | block/io.c | 20 | ||||
| -rw-r--r-- | include/block/block.h | 1 |
2 files changed, 14 insertions, 7 deletions
@@ -700,6 +700,18 @@ int bdrv_make_zero(BlockDriverState *bs, BdrvRequestFlags flags) } } +int bdrv_preadv(BlockDriverState *bs, int64_t offset, QEMUIOVector *qiov) +{ + int ret; + + ret = bdrv_prwv_co(bs, offset, qiov, false, 0); + if (ret < 0) { + return ret; + } + + return qiov->size; +} + int bdrv_pread(BlockDriverState *bs, int64_t offset, void *buf, int bytes) { QEMUIOVector qiov; @@ -707,19 +719,13 @@ int bdrv_pread(BlockDriverState *bs, int64_t offset, void *buf, int bytes) .iov_base = (void *)buf, .iov_len = bytes, }; - int ret; if (bytes < 0) { return -EINVAL; } qemu_iovec_init_external(&qiov, &iov, 1); - ret = bdrv_prwv_co(bs, offset, &qiov, false, 0); - if (ret < 0) { - return ret; - } - - return bytes; + return bdrv_preadv(bs, offset, &qiov); } int bdrv_pwritev(BlockDriverState *bs, int64_t offset, QEMUIOVector *qiov) diff --git a/include/block/block.h b/include/block/block.h index 9c3a62c..9c63d07 100644 --- a/include/block/block.h +++ b/include/block/block.h @@ -235,6 +235,7 @@ int bdrv_pwrite_zeroes(BlockDriverState *bs, int64_t offset, int bdrv_make_zero(BlockDriverState *bs, BdrvRequestFlags flags); int bdrv_pread(BlockDriverState *bs, int64_t offset, void *buf, int count); +int bdrv_preadv(BlockDriverState *bs, int64_t offset, QEMUIOVector *qiov); int bdrv_pwrite(BlockDriverState *bs, int64_t offset, const void *buf, int count); int bdrv_pwritev(BlockDriverState *bs, int64_t offset, QEMUIOVector *qiov); |