From b5679fa49c9a70efa7bf01f6efad1a65e2349a0b Mon Sep 17 00:00:00 2001 From: Fam Zheng Date: Fri, 1 Jun 2018 17:26:47 +0800 Subject: block-backend: Add blk_co_copy_range It's a BlockBackend wrapper of the BDS interface. Signed-off-by: Fam Zheng Reviewed-by: Stefan Hajnoczi Message-id: 20180601092648.24614-10-famz@redhat.com Signed-off-by: Stefan Hajnoczi --- block/block-backend.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) (limited to 'block/block-backend.c') diff --git a/block/block-backend.c b/block/block-backend.c index 89f47b00ea..d55c328736 100644 --- a/block/block-backend.c +++ b/block/block-backend.c @@ -2211,3 +2211,21 @@ void blk_unregister_buf(BlockBackend *blk, void *host) { bdrv_unregister_buf(blk_bs(blk), host); } + +int coroutine_fn blk_co_copy_range(BlockBackend *blk_in, int64_t off_in, + BlockBackend *blk_out, int64_t off_out, + int bytes, BdrvRequestFlags flags) +{ + int r; + r = blk_check_byte_request(blk_in, off_in, bytes); + if (r) { + return r; + } + r = blk_check_byte_request(blk_out, off_out, bytes); + if (r) { + return r; + } + return bdrv_co_copy_range(blk_in->root, off_in, + blk_out->root, off_out, + bytes, flags); +} -- cgit v1.2.3