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rustix/process/
ioctl.rs

1//! Process-oriented `ioctl`s.
2//!
3//! # Safety
4//!
5//! This module invokes `ioctl`s.
6
7#![allow(unsafe_code)]
8
9use crate::{backend, io, ioctl};
10use backend::c;
11use backend::fd::AsFd;
12
13/// `ioctl(fd, TIOCSCTTY, 0)`—Sets the controlling terminal for the process.
14///
15/// # References
16///  - [Linux]
17///  - [FreeBSD]
18///  - [NetBSD]
19///  - [OpenBSD]
20///
21/// [Linux]: https://man7.org/linux/man-pages/man4/tty_ioctl.4.html
22/// [FreeBSD]: https://man.freebsd.org/cgi/man.cgi?query=tty&sektion=4
23/// [NetBSD]: https://man.netbsd.org/tty.4
24/// [OpenBSD]: https://man.openbsd.org/tty.4
25#[cfg(not(any(windows, target_os = "aix", target_os = "redox", target_os = "wasi")))]
26#[inline]
27#[doc(alias = "TIOCSCTTY")]
28pub fn ioctl_tiocsctty<Fd: AsFd>(fd: Fd) -> io::Result<()> {
29    unsafe { ioctl::ioctl(fd, Tiocsctty) }
30}
31
32#[cfg(not(any(windows, target_os = "aix", target_os = "redox", target_os = "wasi")))]
33struct Tiocsctty;
34
35#[cfg(not(any(windows, target_os = "aix", target_os = "redox", target_os = "wasi")))]
36unsafe impl ioctl::Ioctl for Tiocsctty {
37    type Output = ();
38
39    const IS_MUTATING: bool = false;
40
41    fn opcode(&self) -> ioctl::Opcode {
42        c::TIOCSCTTY as ioctl::Opcode
43    }
44
45    fn as_ptr(&mut self) -> *mut c::c_void {
46        crate::utils::as_ptr(&0_u32) as *mut c::c_void
47    }
48
49    unsafe fn output_from_ptr(
50        _: ioctl::IoctlOutput,
51        _: *mut c::c_void,
52    ) -> io::Result<Self::Output> {
53        Ok(())
54    }
55}