50 lines
1.3 KiB
Rust
50 lines
1.3 KiB
Rust
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// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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use prelude::v1::*;
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use sys::fd::FileDesc;
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use io;
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use libc;
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////////////////////////////////////////////////////////////////////////////////
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// Anonymous pipes
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////////////////////////////////////////////////////////////////////////////////
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pub struct AnonPipe(FileDesc);
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pub unsafe fn anon_pipe() -> io::Result<(AnonPipe, AnonPipe)> {
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let mut fds = [0; 2];
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if libc::pipe(fds.as_mut_ptr()) == 0 {
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Ok((AnonPipe::from_fd(fds[0]),
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AnonPipe::from_fd(fds[1])))
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} else {
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Err(io::Error::last_os_error())
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}
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}
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impl AnonPipe {
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pub fn from_fd(fd: libc::c_int) -> AnonPipe {
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AnonPipe(FileDesc::new(fd))
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}
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pub fn read(&self, buf: &mut [u8]) -> io::Result<usize> {
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self.0.read(buf)
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}
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pub fn write(&self, buf: &[u8]) -> io::Result<usize> {
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self.0.write(buf)
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}
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pub fn raw(&self) -> libc::c_int {
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self.0.raw()
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}
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}
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