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| author | Fam Zheng <famz@redhat.com> | 2018-06-01 17:26:47 +0800 |
|---|---|---|
| committer | Stefan Hajnoczi <stefanha@redhat.com> | 2018-06-01 14:41:48 +0100 |
| commit | b5679fa49c9a70efa7bf01f6efad1a65e2349a0b (patch) | |
| tree | 270d5585f5eb8e9f5928bd90ad36d5f8be691364 | |
| parent | 604dfaaa3270081da689991afe83d94d3e8231df (diff) | |
| download | qemu-b5679fa49c9a70efa7bf01f6efad1a65e2349a0b.zip | |
block-backend: Add blk_co_copy_range
It's a BlockBackend wrapper of the BDS interface.
Signed-off-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 20180601092648.24614-10-famz@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
| -rw-r--r-- | block/block-backend.c | 18 | ||||
| -rw-r--r-- | include/sysemu/block-backend.h | 4 |
2 files changed, 22 insertions, 0 deletions
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); +} diff --git a/include/sysemu/block-backend.h b/include/sysemu/block-backend.h index 92ab624fac..8d03d493c2 100644 --- a/include/sysemu/block-backend.h +++ b/include/sysemu/block-backend.h @@ -232,4 +232,8 @@ void blk_set_force_allow_inactivate(BlockBackend *blk); void blk_register_buf(BlockBackend *blk, void *host, size_t size); void blk_unregister_buf(BlockBackend *blk, void *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); + #endif |