# [−][src]Macro nix::ioctl_read_bad

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

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:

ⓘThis example is not tested

    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);

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