Christian Brauner
968d189414
An fd opened O_PATH cannot be read, and an O_WRONLY fd cannot serve as a backing file for a virtual disk image. Reject both at the bind-volume entry point with -EBADF instead of letting the request proceed to QMP where QEMU's file backend would fail to read from the fd. The ReplaceStorage entry point grew the same checks in parallel. Signed-off-by: Christian Brauner (Amutable) <brauner@kernel.org>
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