Crate ioctl_id 

Provides constant functions to compute for ioctl(2) identifiers.

Currently, this supports Linux and macOS. The long term goal is to support ioctl identifiers for other BSD variants.

Usage Notes

[IoctlId] is an alias for the type to pass into the ioctl(2) request. This is either a u32 or u64, depending on the target OS and architecture.

The [io()], [ior()], [iow()], and [iowr()] functions take a type parameter, similar to the _IO(), _IOR(), _IOW(), and _IOWR() macros.

For example, the following C code:

struct my_ioctl_data {
    unsigned int a;
};

#define MY_IOCTL _IOR(0x12, 0x34, struct my_ioctl_data)

Would be written in Rust as:

use ioctl_id::*;

#[repr(C)]
struct MyIoctlData {
   a: u32,
}

const MY_IOCTL: IoctlId = ior::<MyIoctlData>(0x12, 0x34);