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-rw-r--r--include/sysemu/block-backend.h8
1 files changed, 6 insertions, 2 deletions
diff --git a/include/sysemu/block-backend.h b/include/sysemu/block-backend.h
index 3fbc74e17c..e5e1524f06 100644
--- a/include/sysemu/block-backend.h
+++ b/include/sysemu/block-backend.h
@@ -137,20 +137,24 @@ int coroutine_fn blk_co_pwritev(BlockBackend *blk, int64_t offset,
BdrvRequestFlags flags);
static inline int coroutine_fn blk_co_pread(BlockBackend *blk, int64_t offset,
- unsigned int bytes, void *buf,
+ int64_t bytes, void *buf,
BdrvRequestFlags flags)
{
QEMUIOVector qiov = QEMU_IOVEC_INIT_BUF(qiov, buf, bytes);
+ assert(bytes <= SIZE_MAX);
+
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,
+ int64_t bytes, void *buf,
BdrvRequestFlags flags)
{
QEMUIOVector qiov = QEMU_IOVEC_INIT_BUF(qiov, buf, bytes);
+ assert(bytes <= SIZE_MAX);
+
return blk_co_pwritev(blk, offset, bytes, &qiov, flags);
}