Pi66

pind
Simple Rust hotkey daemon.
git clone https://git.pi66.xyz/pind

libs/evdev/src/sys.rs 

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#![allow(non_camel_case_types)]

use crate::compat::{
    ff_condition_effect, ff_constant_effect, ff_periodic_effect, ff_ramp_effect, ff_replay,
    ff_rumble_effect, ff_trigger, input_absinfo, input_id, input_keymap_entry, uinput_abs_setup,
    uinput_setup,
};
use nix::{
    convert_ioctl_res, ioctl_none, ioctl_read, ioctl_read_buf, ioctl_readwrite, ioctl_write_int,
    ioctl_write_ptr, request_code_read,
};

#[repr(C)]
#[derive(Clone, Copy)]
pub union ff_effect_union {
    pub constant: ff_constant_effect,
    pub ramp: ff_ramp_effect,
    pub periodic: ff_periodic_effect,
    pub condition: [ff_condition_effect; 2],
    pub rumble: ff_rumble_effect,
}

#[repr(C)]
#[derive(Clone, Copy)]
pub struct ff_effect {
    pub type_: u16,
    pub id: i16,
    pub direction: u16,
    pub trigger: ff_trigger,
    pub replay: ff_replay,
    pub u: ff_effect_union,
}

#[repr(C)]
#[derive(Clone, Copy)]
pub struct uinput_ff_upload {
    pub request_id: u32,
    pub retval: i32,
    pub effect: ff_effect,
    pub old: ff_effect,
}

#[repr(C)]
#[derive(Clone, Copy)]
pub struct uinput_ff_erase {
    pub request_id: u32,
    pub retval: i32,
    pub effect_id: u32,
}

ioctl_read!(eviocgeffects, b'E', 0x84, ::libc::c_int);
ioctl_read!(eviocgid, b'E', 0x02, /*struct*/ input_id);
ioctl_read!(eviocgkeycode, b'E', 0x04, [::libc::c_uint; 2]);
ioctl_read!(eviocgrep, b'E', 0x03, [::libc::c_uint; 2]);
ioctl_read!(eviocgversion, b'E', 0x01, ::libc::c_int);
ioctl_write_int!(eviocrmff, b'E', 0x81);

ioctl_read!(eviocgkeycode_v2, b'E', 0x04, input_keymap_entry);
ioctl_write_ptr!(eviocskeycode, b'E', 0x04, [::libc::c_uint; 2]);
ioctl_write_ptr!(eviocskeycode_v2, b'E', 0x04, input_keymap_entry);
ioctl_write_ptr!(eviocsrep, b'E', 0x03, [::libc::c_uint; 2]);

ioctl_read_buf!(eviocgname, b'E', 0x06, u8);
ioctl_read_buf!(eviocgphys, b'E', 0x07, u8);
ioctl_read_buf!(eviocguniq, b'E', 0x08, u8);
ioctl_read_buf!(eviocgprop, b'E', 0x09, u8);
ioctl_read_buf!(eviocgmtslots, b'E', 0x0a, u8);
ioctl_read_buf!(eviocgkey, b'E', 0x18, u8);
ioctl_read_buf!(eviocgled, b'E', 0x19, u8);
ioctl_read_buf!(eviocgsnd, b'E', 0x1a, u8);
ioctl_read_buf!(eviocgsw, b'E', 0x1b, u8);

ioctl_write_ptr!(eviocsff, b'E', 0x80, ff_effect);
ioctl_write_int!(eviocgrab, b'E', 0x90);
ioctl_write_int!(eviocrevoke, b'E', 0x91);
ioctl_write_int!(eviocsclockid, b'E', 0xa0);

const UINPUT_IOCTL_BASE: u8 = b'U';
ioctl_write_ptr!(ui_dev_setup, UINPUT_IOCTL_BASE, 3, uinput_setup);
ioctl_write_ptr!(ui_abs_setup, UINPUT_IOCTL_BASE, 4, uinput_abs_setup);
ioctl_none!(ui_dev_create, UINPUT_IOCTL_BASE, 1);

ioctl_write_int!(ui_set_evbit, UINPUT_IOCTL_BASE, 100);
ioctl_write_int!(ui_set_keybit, UINPUT_IOCTL_BASE, 101);
ioctl_write_int!(ui_set_relbit, UINPUT_IOCTL_BASE, 102);
ioctl_write_int!(ui_set_absbit, UINPUT_IOCTL_BASE, 103);
ioctl_write_int!(ui_set_mscbit, UINPUT_IOCTL_BASE, 104);
ioctl_write_int!(ui_set_ledbit, UINPUT_IOCTL_BASE, 105);
ioctl_write_int!(ui_set_sndbit, UINPUT_IOCTL_BASE, 106);
ioctl_write_int!(ui_set_ffbit, UINPUT_IOCTL_BASE, 107);
ioctl_write_ptr!(ui_set_phys, UINPUT_IOCTL_BASE, 108, libc::c_char);
ioctl_write_int!(ui_set_swbit, UINPUT_IOCTL_BASE, 109);
ioctl_write_int!(ui_set_propbit, UINPUT_IOCTL_BASE, 110);

ioctl_read_buf!(ui_get_sysname, UINPUT_IOCTL_BASE, 300, u8);

ioctl_readwrite!(ui_begin_ff_upload, UINPUT_IOCTL_BASE, 200, uinput_ff_upload);
ioctl_write_ptr!(ui_end_ff_upload, UINPUT_IOCTL_BASE, 201, uinput_ff_upload);
ioctl_readwrite!(ui_begin_ff_erase, UINPUT_IOCTL_BASE, 202, uinput_ff_erase);
ioctl_write_ptr!(ui_end_ff_erase, UINPUT_IOCTL_BASE, 203, uinput_ff_erase);

macro_rules! eviocgbit_ioctl {
    (<math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mi>m</mi><mi>a</mi><mi>c</mi><mi>:</mi><mi>i</mi><mi>d</mi><mi>e</mi><mi>n</mi><mi>t</mi><mo>&#x00021;</mo><mo stretchy="false">&#x00028;</mo></mrow></math>name:ident, <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mi>e</mi><mi>v</mi><mi>:</mi><mi>i</mi><mi>d</mi><mi>e</mi><mi>n</mi><mi>t</mi><mo>&#x0002C;</mo></mrow></math>ty:ty)) => {
        eviocgbit_ioctl!(<math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mi>m</mi><mi>a</mi><mi>c</mi><mo>&#x00021;</mo><mo stretchy="false">&#x00028;</mo></mrow></math>name, <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mi>c</mi><mi>r</mi><mi>a</mi><mi>t</mi><mi>e</mi><mi>:</mi><mi>:</mi><mi>E</mi><mi>v</mi><mi>e</mi><mi>n</mi><mi>t</mi><mi>T</mi><mi>y</mi><mi>p</mi><mi>e</mi><mi>:</mi><mi>:</mi></mrow></math>ev.0, $ty));
    };
    (<math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mi>m</mi><mi>a</mi><mi>c</mi><mi>:</mi><mi>i</mi><mi>d</mi><mi>e</mi><mi>n</mi><mi>t</mi><mo>&#x00021;</mo><mo stretchy="false">&#x00028;</mo></mrow></math>name:ident, <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mi>e</mi><mi>v</mi><mi>:</mi><mi>e</mi><mi>x</mi><mi>p</mi><mi>r</mi><mo>&#x0002C;</mo></mrow></math>ty:ty)) => {
        <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mi>m</mi><mi>a</mi><mi>c</mi><mo>&#x00021;</mo><mo stretchy="false">&#x00028;</mo></mrow></math>name, b'E', 0x20 + <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mi>e</mi><mi>v</mi><mo>&#x0002C;</mo></mrow></math>ty);
    };
}

eviocgbit_ioctl!(ioctl_read_buf!(eviocgbit_type, 0, u8));
eviocgbit_ioctl!(ioctl_read_buf!(eviocgbit_key, KEY, u8));
eviocgbit_ioctl!(ioctl_read_buf!(eviocgbit_relative, RELATIVE, u8));
eviocgbit_ioctl!(ioctl_read_buf!(eviocgbit_absolute, ABSOLUTE, u8));
eviocgbit_ioctl!(ioctl_read_buf!(eviocgbit_misc, MISC, u8));
eviocgbit_ioctl!(ioctl_read_buf!(eviocgbit_switch, SWITCH, u8));
eviocgbit_ioctl!(ioctl_read_buf!(eviocgbit_led, LED, u8));
eviocgbit_ioctl!(ioctl_read_buf!(eviocgbit_sound, SOUND, u8));
eviocgbit_ioctl!(ioctl_read_buf!(eviocgbit_repeat, REPEAT, u8));
eviocgbit_ioctl!(ioctl_read_buf!(eviocgbit_ff, FORCEFEEDBACK, u8));
eviocgbit_ioctl!(ioctl_read_buf!(eviocgbit_power, POWER, u8));
eviocgbit_ioctl!(ioctl_read_buf!(eviocgbit_ffstatus, FORCEFEEDBACKSTATUS, u8));

/// ioctl: "get abs value/limits"
///
/// `abs` should be one of the "Absolute axes" values defined in the Linux kernel headers.
/// In modern (5.11) kernels these are in `include/uapi/linux/input-event-codes.h`, and in older
/// kernels these defines can be found in `include/uapi/linux/input.h`
///
/// # Panics
///
/// Calling this with a value greater than the kernel-defined `ABS_MAX` (typically 0x3f) will panic.
///
/// # Safety
///
/// 'abs' must be a valid axis number and supported by the device, otherwise the behavior is
/// undefined.
pub unsafe fn eviocgabs(
    fd: ::libc::c_int,
    abs: u32,
    buf: &mut input_absinfo,
) -> ::nix::Result<::libc::c_int> {
    assert!(abs <= 0x3f);
    convert_ioctl_res!(::nix::libc::ioctl(
        fd,
        request_code_read!(b'E', 0x40 + abs, ::std::mem::size_of::<input_absinfo>()),
        buf as *mut input_absinfo
    ))
}