Function from_components

src/ioctl/mod.rs:210–224

(
        direction: Direction,
        group: u8,
        number: u8,
        data_size: usize,
    )

    #[doc(alias = "_IOC")]
    #[inline]
    pub const fn from_components(
        direction: Direction,
        group: u8,
        number: u8,
        data_size: usize,
    ) -> Opcode {
        assert!(data_size <= Opcode::MAX as usize, "data size is too large");

        platform::compose_opcode(
            direction,
            group as Opcode,
            number as Opcode,
            data_size as Opcode,
        )
    }

    /// Create a new opcode from a group, a number, that uses no data.
    ///