From 371420e2173b8055f82366bdb366f9399c7d9c3c Mon Sep 17 00:00:00 2001 From: Vladimir Sementsov-Ogievskiy Date: Mon, 22 Apr 2019 17:58:30 +0300 Subject: block: introduce byte-based io helpers Signed-off-by: Vladimir Sementsov-Ogievskiy Reviewed-by: Stefan Hajnoczi Reviewed-by: Stefano Garzarella Signed-off-by: Kevin Wolf --- include/sysemu/block-backend.h | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) (limited to 'include/sysemu') diff --git a/include/sysemu/block-backend.h b/include/sysemu/block-backend.h index 3be05c2..5be6224 100644 --- a/include/sysemu/block-backend.h +++ b/include/sysemu/block-backend.h @@ -124,6 +124,25 @@ int coroutine_fn blk_co_preadv(BlockBackend *blk, int64_t offset, int coroutine_fn blk_co_pwritev(BlockBackend *blk, int64_t offset, unsigned int bytes, QEMUIOVector *qiov, BdrvRequestFlags flags); + +static inline int coroutine_fn blk_co_pread(BlockBackend *blk, int64_t offset, + unsigned int bytes, void *buf, + BdrvRequestFlags flags) +{ + QEMUIOVector qiov = QEMU_IOVEC_INIT_BUF(qiov, buf, bytes); + + return blk_co_preadv(blk, offset, bytes, &qiov, flags); +} + +static inline int coroutine_fn blk_co_pwrite(BlockBackend *blk, int64_t offset, + unsigned int bytes, void *buf, + BdrvRequestFlags flags) +{ + QEMUIOVector qiov = QEMU_IOVEC_INIT_BUF(qiov, buf, bytes); + + return blk_co_pwritev(blk, offset, bytes, &qiov, flags); +} + int blk_pwrite_zeroes(BlockBackend *blk, int64_t offset, int bytes, BdrvRequestFlags flags); BlockAIOCB *blk_aio_pwrite_zeroes(BlockBackend *blk, int64_t offset, -- cgit v1.1