auronandace
41 lines
852 B
Rust
41 lines
852 B
Rust
//! `utmp.h` implementation.
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//!
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//! Non-POSIX, see <https://www.man7.org/linux/man-pages/man3/openpty.3.html>.
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use crate::{
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header::{sys_ioctl, unistd},
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platform::types::{c_int, c_void},
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};
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/// See <https://www.man7.org/linux/man-pages/man3/openpty.3.html>.
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#[unsafe(no_mangle)]
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pub unsafe extern "C" fn login_tty(fd: c_int) -> c_int {
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// Create a new session
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unistd::setsid();
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// Set controlling terminal
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let mut arg: c_int = 0;
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if unsafe {
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sys_ioctl::ioctl(
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fd,
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sys_ioctl::TIOCSCTTY,
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core::ptr::from_mut::<c_int>(&mut arg).cast::<c_void>(),
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)
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} != 0
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{
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return -1;
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}
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// Overwrite stdio
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unistd::dup2(fd, 0);
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unistd::dup2(fd, 1);
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unistd::dup2(fd, 2);
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// Close if needed
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if fd > 2 {
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unistd::close(fd);
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}
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0
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}
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