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use crate::PipeReader;
use crate::PipeWriter;
use libc::c_int;
use std::fs::File;
use std::io;
use std::mem::ManuallyDrop;
use std::os::unix::prelude::*;
#[cfg(not(any(target_os = "ios", target_os = "macos")))]
fn pipe2_cloexec() -> io::Result<(c_int, c_int)> {
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());
}
Ok((fds[0], fds[1]))
}
#[cfg(any(target_os = "ios", target_os = "macos"))]
fn pipe2_cloexec() -> io::Result<(c_int, c_int)> {
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 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((fds[0], fds[1]))
}
pub(crate) fn pipe() -> io::Result<(PipeReader, PipeWriter)> {
let (read_fd, write_fd) = pipe2_cloexec()?;
unsafe {
Ok((
PipeReader::from_raw_fd(read_fd),
PipeWriter::from_raw_fd(write_fd),
))
}
}
pub(crate) fn dup<F: AsRawFd>(wrapper: &F) -> io::Result<File> {
let fd = wrapper.as_raw_fd();
let temp_file = ManuallyDrop::new(unsafe { File::from_raw_fd(fd) });
temp_file.try_clone()
}
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 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))
}
}