7e9e3896df
This commit is an implementation of [RFC 1174][rfc] which adds three new traits to the standard library: * `IntoRawFd` - implemented on Unix for all I/O types (files, sockets, etc) * `IntoRawHandle` - implemented on Windows for files, processes, etc * `IntoRawSocket` - implemented on Windows for networking types [rfc]: https://github.com/rust-lang/rfcs/blob/master/text/1174-into-raw-fd-socket-handle-traits.md Closes #27062
51 lines
1.5 KiB
Rust
51 lines
1.5 KiB
Rust
// 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 fn anon_pipe() -> io::Result<(AnonPipe, AnonPipe)> {
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let mut fds = [0; 2];
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if unsafe { libc::pipe(fds.as_mut_ptr()) == 0 } {
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Ok((AnonPipe::from_fd(fds[0]), 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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let fd = FileDesc::new(fd);
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fd.set_cloexec();
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AnonPipe(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 { self.0.raw() }
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pub fn fd(&self) -> &FileDesc { &self.0 }
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pub fn into_fd(self) -> FileDesc { self.0 }
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}
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