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use std::fs::File;
use std::io::{Read, Write};
use std::os::unix::io::{IntoRawFd, AsRawFd, FromRawFd, RawFd};
use libc;
use {io, Ready, Poll, PollOpt, Token};
use event::Evented;
use unix::EventedFd;
use sys::unix::cvt;
pub fn set_nonblock(fd: libc::c_int) -> io::Result<()> {
unsafe {
let flags = libc::fcntl(fd, libc::F_GETFL);
cvt(libc::fcntl(fd, libc::F_SETFL, flags | libc::O_NONBLOCK)).map(|_|())
}
}
pub fn set_cloexec(fd: libc::c_int) -> io::Result<()> {
unsafe {
let flags = libc::fcntl(fd, libc::F_GETFD);
cvt(libc::fcntl(fd, libc::F_SETFD, flags | libc::FD_CLOEXEC)).map(|_| ())
}
}
/*
*
* ===== Basic IO type =====
*
*/
/// Manages a FD
#[derive(Debug)]
pub struct Io {
fd: File,
}
impl Io {
/// Try to clone the FD
pub fn try_clone(&self) -> io::Result<Io> {
Ok(Io { fd: self.fd.try_clone()? })
}
}
impl FromRawFd for Io {
unsafe fn from_raw_fd(fd: RawFd) -> Io {
Io { fd: File::from_raw_fd(fd) }
}
}
impl IntoRawFd for Io {
fn into_raw_fd(self) -> RawFd {
self.fd.into_raw_fd()
}
}
impl AsRawFd for Io {
fn as_raw_fd(&self) -> RawFd {
self.fd.as_raw_fd()
}
}
impl Evented for Io {
fn register(&self, poll: &Poll, token: Token, interest: Ready, opts: PollOpt) -> io::Result<()> {
EventedFd(&self.as_raw_fd()).register(poll, token, interest, opts)
}
fn reregister(&self, poll: &Poll, token: Token, interest: Ready, opts: PollOpt) -> io::Result<()> {
EventedFd(&self.as_raw_fd()).reregister(poll, token, interest, opts)
}
fn deregister(&self, poll: &Poll) -> io::Result<()> {
EventedFd(&self.as_raw_fd()).deregister(poll)
}
}
impl Read for Io {
fn read(&mut self, dst: &mut [u8]) -> io::Result<usize> {
(&self.fd).read(dst)
}
}
impl<'a> Read for &'a Io {
fn read(&mut self, dst: &mut [u8]) -> io::Result<usize> {
(&self.fd).read(dst)
}
}
impl Write for Io {
fn write(&mut self, src: &[u8]) -> io::Result<usize> {
(&self.fd).write(src)
}
fn flush(&mut self) -> io::Result<()> {
(&self.fd).flush()
}
}
impl<'a> Write for &'a Io {
fn write(&mut self, src: &[u8]) -> io::Result<usize> {
(&self.fd).write(src)
}
fn flush(&mut self) -> io::Result<()> {
(&self.fd).flush()
}
}
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