pub(crate) unsafe fn ioctl_readonly(
fd: BorrowedFd<'_>,
request: RawOpcode,
arg: *mut c_void,
) -> Result<IoctlOutput>
pub(crate) unsafe fn ioctl_readonly(
fd: BorrowedFd<'_>,
request: RawOpcode,
arg: *mut c_void,
) -> Result<IoctlOutput>