Macro nix::ioctl_read_bad

macro_rules! ioctl_read_bad {
    ($(#[$attr:meta])* $name:ident, $nr:expr, $ty:ty) => { ... };
}

Available on crate feature ioctl only.

Generates a wrapper function for a “bad” ioctl that reads data from the kernel.

The arguments to this macro are:

• The function name
• The ioctl request code
• The data type passed by this ioctl

The generated function has the following signature:

pub unsafe fn FUNCTION_NAME(fd: libc::c_int, data: *mut DATA_TYPE) -> Result<libc::c_int>

For a more in-depth explanation of ioctls, see ::sys::ioctl.

Example

ioctl_read_bad!(tcgets, libc::TCGETS, libc::termios);