Function openpt

src/pty.rs:91–108

(flags: OpenptFlags)

#[inline]
#[doc(alias = "posix_openpt")]
pub fn openpt(flags: OpenptFlags) -> io::Result<OwnedFd> {
    // On Linux, open the device ourselves so that we can support `CLOEXEC`.
    #[cfg(linux_kernel)]
    {
        use crate::fs::{open, Mode};
        match open(cstr!("/dev/ptmx"), flags.into(), Mode::empty()) {
            // Match libc `openat` behavior with `ENOSPC`.
            Err(io::Errno::NOSPC) => Err(io::Errno::AGAIN),
            otherwise => otherwise,
        }
    }

    // On all other platforms, use `openpt`.
    #[cfg(not(linux_kernel))]
    {
        backend::pty::syscalls::openpt(flags)
    }
}

/// `ptsname(fd)`—Return the name of a pseudoterminal.
///