use crate::PipeReader;
use crate::PipeWriter;
use libc::c_int;
use std::fs::File;
use std::io;
use std::os::unix::prelude::*;
#[cfg(not(any(
target_os = "aix",
target_os = "ios",
target_os = "visionos",
target_os = "macos",
target_os = "haiku"
)))]
fn pipe2_cloexec() -> io::Result<(OwnedFd, OwnedFd)> {
let mut fds: [c_int; 2] = [0; 2];
let res = unsafe { libc::pipe2(fds.as_mut_ptr(), libc::O_CLOEXEC) };
if res != 0 {
return Err(io::Error::last_os_error());
}
unsafe { Ok((OwnedFd::from_raw_fd(fds[0]), OwnedFd::from_raw_fd(fds[1]))) }
}
#[cfg(any(
target_os = "aix",
target_os = "ios",
target_os = "visionos",
target_os = "macos",
target_os = "haiku"
))]
fn pipe2_cloexec() -> io::Result<(OwnedFd, OwnedFd)> {
let mut fds: [c_int; 2] = [0; 2];
let res = unsafe { libc::pipe(fds.as_mut_ptr()) };
if res != 0 {
return Err(io::Error::last_os_error());
}
let owned_fds = unsafe { (OwnedFd::from_raw_fd(fds[0]), OwnedFd::from_raw_fd(fds[1])) };
let res = unsafe { libc::fcntl(fds[0], libc::F_SETFD, libc::FD_CLOEXEC) };
if res != 0 {
return Err(io::Error::last_os_error());
}
let res = unsafe { libc::fcntl(fds[1], libc::F_SETFD, libc::FD_CLOEXEC) };
if res != 0 {
return Err(io::Error::last_os_error());
}
Ok(owned_fds)
}
pub(crate) fn pipe() -> io::Result<(PipeReader, PipeWriter)> {
let (read_fd, write_fd) = pipe2_cloexec()?;
Ok((read_fd.into(), write_fd.into()))
}
pub(crate) fn dup(handle: impl AsFd) -> io::Result<OwnedFd> {
handle.as_fd().try_clone_to_owned()
}
impl IntoRawFd for PipeReader {
fn into_raw_fd(self) -> RawFd {
self.0.into_raw_fd()
}
}
impl AsRawFd for PipeReader {
fn as_raw_fd(&self) -> RawFd {
self.0.as_raw_fd()
}
}
impl FromRawFd for PipeReader {
unsafe fn from_raw_fd(fd: RawFd) -> PipeReader {
PipeReader(File::from_raw_fd(fd))
}
}
impl From<PipeReader> for OwnedFd {
fn from(pr: PipeReader) -> Self {
pr.0.into()
}
}
impl AsFd for PipeReader {
fn as_fd(&self) -> BorrowedFd<'_> {
self.0.as_fd()
}
}
impl From<OwnedFd> for PipeReader {
fn from(fd: OwnedFd) -> Self {
PipeReader(fd.into())
}
}
impl IntoRawFd for PipeWriter {
fn into_raw_fd(self) -> RawFd {
self.0.into_raw_fd()
}
}
impl AsRawFd for PipeWriter {
fn as_raw_fd(&self) -> RawFd {
self.0.as_raw_fd()
}
}
impl FromRawFd for PipeWriter {
unsafe fn from_raw_fd(fd: RawFd) -> PipeWriter {
PipeWriter(File::from_raw_fd(fd))
}
}
impl From<PipeWriter> for OwnedFd {
fn from(pw: PipeWriter) -> Self {
pw.0.into()
}
}
impl AsFd for PipeWriter {
fn as_fd(&self) -> BorrowedFd<'_> {
self.0.as_fd()
}
}
impl From<OwnedFd> for PipeWriter {
fn from(fd: OwnedFd) -> Self {
PipeWriter(fd.into())
}
}