| <!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="Source of the Rust file `/root/.cargo/registry/src/github.com-1ecc6299db9ec823/socket2-0.4.9/src/sys/unix.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>unix.rs - source</title><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../SourceSerif4-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../FiraSans-Regular.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../FiraSans-Medium.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../SourceCodePro-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../SourceSerif4-Bold.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../SourceCodePro-Semibold.ttf.woff2"><link rel="stylesheet" href="../../../normalize.css"><link rel="stylesheet" href="../../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" href="../../../ayu.css" disabled><link rel="stylesheet" href="../../../dark.css" disabled><link rel="stylesheet" href="../../../light.css" id="themeStyle"><script id="default-settings" ></script><script src="../../../storage.js"></script><script defer src="../../../source-script.js"></script><script defer src="../../../source-files.js"></script><script defer src="../../../main.js"></script><noscript><link rel="stylesheet" href="../../../noscript.css"></noscript><link rel="alternate icon" type="image/png" href="../../../favicon-16x16.png"><link rel="alternate icon" type="image/png" href="../../../favicon-32x32.png"><link rel="icon" type="image/svg+xml" href="../../../favicon.svg"></head><body class="rustdoc source"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><a class="sidebar-logo" href="../../../socket2/index.html"><div class="logo-container"><img class="rust-logo" src="../../../rust-logo.svg" alt="logo"></div></a></nav><main><div class="width-limiter"><nav class="sub"><a class="sub-logo-container" href="../../../socket2/index.html"><img class="rust-logo" src="../../../rust-logo.svg" alt="logo"></a><form class="search-form"><div class="search-container"><span></span><input class="search-input" name="search" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><div id="help-button" title="help" tabindex="-1"><a href="../../../help.html">?</a></div><div id="settings-menu" tabindex="-1"><a href="../../../settings.html" title="settings"><img width="22" height="22" alt="Change settings" src="../../../wheel.svg"></a></div></div></form></nav><section id="main-content" class="content"><div class="example-wrap"><pre class="src-line-numbers"><span id="1">1</span> |
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| <span id="2009">2009</span> |
| <span id="2010">2010</span> |
| <span id="2011">2011</span> |
| <span id="2012">2012</span> |
| <span id="2013">2013</span> |
| <span id="2014">2014</span> |
| <span id="2015">2015</span> |
| <span id="2016">2016</span> |
| <span id="2017">2017</span> |
| <span id="2018">2018</span> |
| <span id="2019">2019</span> |
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| <span id="2095">2095</span> |
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| <span id="2098">2098</span> |
| <span id="2099">2099</span> |
| <span id="2100">2100</span> |
| <span id="2101">2101</span> |
| </pre><pre class="rust"><code><span class="comment">// Copyright 2015 The Rust Project Developers. |
| // |
| // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or |
| // https://www.apache.org/licenses/LICENSE-2.0> or the MIT license |
| // <LICENSE-MIT or https://opensource.org/licenses/MIT>, at your |
| // option. This file may not be copied, modified, or distributed |
| // except according to those terms. |
| |
| </span><span class="kw">use </span>std::cmp::min; |
| <span class="attribute">#[cfg(not(target_os = <span class="string">"redox"</span>))] |
| </span><span class="kw">use </span>std::io::IoSlice; |
| <span class="kw">use </span>std::marker::PhantomData; |
| <span class="kw">use </span>std::mem::{<span class="self">self</span>, size_of, MaybeUninit}; |
| <span class="kw">use </span>std::net::Shutdown; |
| <span class="kw">use </span>std::net::{Ipv4Addr, Ipv6Addr}; |
| <span class="attribute">#[cfg(all(feature = <span class="string">"all"</span>, target_vendor = <span class="string">"apple"</span>))] |
| </span><span class="kw">use </span>std::num::NonZeroU32; |
| <span class="attribute">#[cfg(all( |
| feature = <span class="string">"all"</span>, |
| any( |
| target_os = <span class="string">"android"</span>, |
| target_os = <span class="string">"freebsd"</span>, |
| target_os = <span class="string">"linux"</span>, |
| target_vendor = <span class="string">"apple"</span>, |
| ) |
| ))] |
| </span><span class="kw">use </span>std::num::NonZeroUsize; |
| <span class="attribute">#[cfg(feature = <span class="string">"all"</span>)] |
| </span><span class="kw">use </span>std::os::unix::ffi::OsStrExt; |
| <span class="attribute">#[cfg(all( |
| feature = <span class="string">"all"</span>, |
| any( |
| target_os = <span class="string">"android"</span>, |
| target_os = <span class="string">"freebsd"</span>, |
| target_os = <span class="string">"linux"</span>, |
| target_vendor = <span class="string">"apple"</span>, |
| ) |
| ))] |
| </span><span class="kw">use </span>std::os::unix::io::RawFd; |
| <span class="kw">use </span>std::os::unix::io::{AsRawFd, FromRawFd, IntoRawFd}; |
| <span class="attribute">#[cfg(feature = <span class="string">"all"</span>)] |
| </span><span class="kw">use </span>std::os::unix::net::{UnixDatagram, UnixListener, UnixStream}; |
| <span class="attribute">#[cfg(feature = <span class="string">"all"</span>)] |
| </span><span class="kw">use </span>std::path::Path; |
| <span class="attribute">#[cfg(not(all(target_os = <span class="string">"redox"</span>, not(feature = <span class="string">"all"</span>))))] |
| </span><span class="kw">use </span>std::ptr; |
| <span class="kw">use </span>std::time::{Duration, Instant}; |
| <span class="kw">use </span>std::{io, slice}; |
| |
| <span class="attribute">#[cfg(not(target_vendor = <span class="string">"apple"</span>))] |
| </span><span class="kw">use </span>libc::ssize_t; |
| <span class="kw">use </span>libc::{c_void, in6_addr, in_addr}; |
| |
| <span class="attribute">#[cfg(not(target_os = <span class="string">"redox"</span>))] |
| </span><span class="kw">use </span><span class="kw">crate</span>::RecvFlags; |
| <span class="kw">use crate</span>::{Domain, Protocol, SockAddr, TcpKeepalive, Type}; |
| |
| <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">use </span>libc::c_int; |
| |
| <span class="comment">// Used in `Domain`. |
| </span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">use </span>libc::{AF_INET, AF_INET6}; |
| <span class="comment">// Used in `Type`. |
| </span><span class="attribute">#[cfg(all(feature = <span class="string">"all"</span>, not(target_os = <span class="string">"redox"</span>)))] |
| </span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">use </span>libc::SOCK_RAW; |
| <span class="attribute">#[cfg(feature = <span class="string">"all"</span>)] |
| </span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">use </span>libc::SOCK_SEQPACKET; |
| <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">use </span>libc::{SOCK_DGRAM, SOCK_STREAM}; |
| <span class="comment">// Used in `Protocol`. |
| </span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">use </span>libc::{IPPROTO_ICMP, IPPROTO_ICMPV6, IPPROTO_TCP, IPPROTO_UDP}; |
| <span class="comment">// Used in `SockAddr`. |
| </span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">use </span>libc::{ |
| sa_family_t, sockaddr, sockaddr_in, sockaddr_in6, sockaddr_storage, socklen_t, |
| }; |
| <span class="comment">// Used in `RecvFlags`. |
| </span><span class="attribute">#[cfg(not(target_os = <span class="string">"redox"</span>))] |
| </span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">use </span>libc::{MSG_TRUNC, SO_OOBINLINE}; |
| <span class="comment">// Used in `Socket`. |
| </span><span class="attribute">#[cfg(not(target_os = <span class="string">"nto"</span>))] |
| </span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">use </span>libc::ipv6_mreq <span class="kw">as </span>Ipv6Mreq; |
| <span class="attribute">#[cfg(all(feature = <span class="string">"all"</span>, not(target_os = <span class="string">"redox"</span>)))] |
| </span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">use </span>libc::IP_HDRINCL; |
| <span class="attribute">#[cfg(not(any( |
| target_os = <span class="string">"dragonfly"</span>, |
| target_os = <span class="string">"fuchsia"</span>, |
| target_os = <span class="string">"illumos"</span>, |
| target_os = <span class="string">"netbsd"</span>, |
| target_os = <span class="string">"openbsd"</span>, |
| target_os = <span class="string">"redox"</span>, |
| target_os = <span class="string">"solaris"</span>, |
| target_os = <span class="string">"haiku"</span>, |
| target_os = <span class="string">"nto"</span>, |
| )))] |
| </span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">use </span>libc::IP_RECVTOS; |
| <span class="attribute">#[cfg(not(any( |
| target_os = <span class="string">"fuchsia"</span>, |
| target_os = <span class="string">"redox"</span>, |
| target_os = <span class="string">"solaris"</span>, |
| target_os = <span class="string">"illumos"</span>, |
| )))] |
| </span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">use </span>libc::IP_TOS; |
| <span class="attribute">#[cfg(not(target_vendor = <span class="string">"apple"</span>))] |
| </span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">use </span>libc::SO_LINGER; |
| <span class="attribute">#[cfg(target_vendor = <span class="string">"apple"</span>)] |
| </span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">use </span>libc::SO_LINGER_SEC <span class="kw">as </span>SO_LINGER; |
| <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">use </span>libc::{ |
| ip_mreq <span class="kw">as </span>IpMreq, linger, IPPROTO_IP, IPPROTO_IPV6, IPV6_MULTICAST_HOPS, IPV6_MULTICAST_IF, |
| IPV6_MULTICAST_LOOP, IPV6_UNICAST_HOPS, IPV6_V6ONLY, IP_ADD_MEMBERSHIP, IP_DROP_MEMBERSHIP, |
| IP_MULTICAST_IF, IP_MULTICAST_LOOP, IP_MULTICAST_TTL, IP_TTL, MSG_OOB, MSG_PEEK, SOL_SOCKET, |
| SO_BROADCAST, SO_ERROR, SO_KEEPALIVE, SO_RCVBUF, SO_RCVTIMEO, SO_REUSEADDR, SO_SNDBUF, |
| SO_SNDTIMEO, SO_TYPE, TCP_NODELAY, |
| }; |
| <span class="attribute">#[cfg(not(any( |
| target_os = <span class="string">"dragonfly"</span>, |
| target_os = <span class="string">"haiku"</span>, |
| target_os = <span class="string">"netbsd"</span>, |
| target_os = <span class="string">"openbsd"</span>, |
| target_os = <span class="string">"redox"</span>, |
| target_os = <span class="string">"fuchsia"</span>, |
| target_os = <span class="string">"nto"</span>, |
| )))] |
| </span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">use </span>libc::{ |
| ip_mreq_source <span class="kw">as </span>IpMreqSource, IP_ADD_SOURCE_MEMBERSHIP, IP_DROP_SOURCE_MEMBERSHIP, |
| }; |
| <span class="attribute">#[cfg(not(any( |
| target_os = <span class="string">"dragonfly"</span>, |
| target_os = <span class="string">"freebsd"</span>, |
| target_os = <span class="string">"haiku"</span>, |
| target_os = <span class="string">"illumos"</span>, |
| target_os = <span class="string">"netbsd"</span>, |
| target_os = <span class="string">"openbsd"</span>, |
| target_os = <span class="string">"solaris"</span>, |
| target_os = <span class="string">"nto"</span>, |
| target_vendor = <span class="string">"apple" |
| </span>)))] |
| </span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">use </span>libc::{IPV6_ADD_MEMBERSHIP, IPV6_DROP_MEMBERSHIP}; |
| <span class="attribute">#[cfg(any( |
| target_os = <span class="string">"dragonfly"</span>, |
| target_os = <span class="string">"freebsd"</span>, |
| target_os = <span class="string">"haiku"</span>, |
| target_os = <span class="string">"illumos"</span>, |
| target_os = <span class="string">"netbsd"</span>, |
| target_os = <span class="string">"openbsd"</span>, |
| target_os = <span class="string">"solaris"</span>, |
| target_vendor = <span class="string">"apple"</span>, |
| ))] |
| </span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">use </span>libc::{ |
| IPV6_JOIN_GROUP <span class="kw">as </span>IPV6_ADD_MEMBERSHIP, IPV6_LEAVE_GROUP <span class="kw">as </span>IPV6_DROP_MEMBERSHIP, |
| }; |
| <span class="attribute">#[cfg(all( |
| feature = <span class="string">"all"</span>, |
| any( |
| target_os = <span class="string">"android"</span>, |
| target_os = <span class="string">"dragonfly"</span>, |
| target_os = <span class="string">"freebsd"</span>, |
| target_os = <span class="string">"fuchsia"</span>, |
| target_os = <span class="string">"illumos"</span>, |
| target_os = <span class="string">"linux"</span>, |
| target_os = <span class="string">"netbsd"</span>, |
| target_vendor = <span class="string">"apple"</span>, |
| ) |
| ))] |
| </span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">use </span>libc::{TCP_KEEPCNT, TCP_KEEPINTVL}; |
| |
| <span class="comment">// See this type in the Windows file. |
| </span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">type </span>Bool = c_int; |
| |
| <span class="attribute">#[cfg(any(target_vendor = <span class="string">"apple"</span>, target_os = <span class="string">"nto"</span>))] |
| </span><span class="kw">use </span>libc::TCP_KEEPALIVE <span class="kw">as </span>KEEPALIVE_TIME; |
| <span class="attribute">#[cfg(not(any( |
| target_vendor = <span class="string">"apple"</span>, |
| target_os = <span class="string">"haiku"</span>, |
| target_os = <span class="string">"openbsd"</span>, |
| target_os = <span class="string">"nto"</span>, |
| )))] |
| </span><span class="kw">use </span>libc::TCP_KEEPIDLE <span class="kw">as </span>KEEPALIVE_TIME; |
| |
| <span class="doccomment">/// Helper macro to execute a system call that returns an `io::Result`. |
| </span><span class="macro">macro_rules! </span>syscall { |
| (<span class="macro-nonterminal">$</span><span class="kw">fn</span>: <span class="macro-nonterminal">ident </span>( $(<span class="macro-nonterminal">$arg</span>: expr),* $(,)* ) ) => {{ |
| <span class="attribute">#[allow(unused_unsafe)] |
| </span><span class="kw">let </span>res = <span class="kw">unsafe </span>{ libc::<span class="macro-nonterminal">$</span><span class="kw">fn</span>($(<span class="macro-nonterminal">$arg</span>, )<span class="kw-2">*</span>) }; |
| <span class="kw">if </span>res == -<span class="number">1 </span>{ |
| <span class="prelude-val">Err</span>(std::io::Error::last_os_error()) |
| } <span class="kw">else </span>{ |
| <span class="prelude-val">Ok</span>(res) |
| } |
| }}; |
| } |
| |
| <span class="doccomment">/// Maximum size of a buffer passed to system call like `recv` and `send`. |
| </span><span class="attribute">#[cfg(not(target_vendor = <span class="string">"apple"</span>))] |
| </span><span class="kw">const </span>MAX_BUF_LEN: usize = <ssize_t>::max_value() <span class="kw">as </span>usize; |
| |
| <span class="comment">// The maximum read limit on most posix-like systems is `SSIZE_MAX`, with the |
| // man page quoting that if the count of bytes to read is greater than |
| // `SSIZE_MAX` the result is "unspecified". |
| // |
| // On macOS, however, apparently the 64-bit libc is either buggy or |
| // intentionally showing odd behavior by rejecting any read with a size larger |
| // than or equal to INT_MAX. To handle both of these the read size is capped on |
| // both platforms. |
| </span><span class="attribute">#[cfg(target_vendor = <span class="string">"apple"</span>)] |
| </span><span class="kw">const </span>MAX_BUF_LEN: usize = <c_int>::max_value() <span class="kw">as </span>usize - <span class="number">1</span>; |
| |
| <span class="attribute">#[cfg(any( |
| all( |
| target_os = <span class="string">"linux"</span>, |
| any( |
| target_env = <span class="string">"gnu"</span>, |
| all(target_env = <span class="string">"uclibc"</span>, target_pointer_width = <span class="string">"64"</span>) |
| ) |
| ), |
| target_os = <span class="string">"android"</span>, |
| ))] |
| </span><span class="kw">type </span>IovLen = usize; |
| |
| <span class="attribute">#[cfg(any( |
| all( |
| target_os = <span class="string">"linux"</span>, |
| any( |
| target_env = <span class="string">"musl"</span>, |
| all(target_env = <span class="string">"uclibc"</span>, target_pointer_width = <span class="string">"32"</span>) |
| ) |
| ), |
| target_os = <span class="string">"dragonfly"</span>, |
| target_os = <span class="string">"freebsd"</span>, |
| target_os = <span class="string">"fuchsia"</span>, |
| target_os = <span class="string">"haiku"</span>, |
| target_os = <span class="string">"illumos"</span>, |
| target_os = <span class="string">"netbsd"</span>, |
| target_os = <span class="string">"openbsd"</span>, |
| target_os = <span class="string">"solaris"</span>, |
| target_os = <span class="string">"nto"</span>, |
| target_vendor = <span class="string">"apple"</span>, |
| ))] |
| </span><span class="kw">type </span>IovLen = c_int; |
| |
| <span class="doccomment">/// Unix only API. |
| </span><span class="kw">impl </span>Domain { |
| <span class="doccomment">/// Domain for Unix socket communication, corresponding to `AF_UNIX`. |
| </span><span class="attribute">#[cfg_attr(docsrs, doc(cfg(unix)))] |
| </span><span class="kw">pub const </span>UNIX: Domain = Domain(libc::AF_UNIX); |
| |
| <span class="doccomment">/// Domain for low-level packet interface, corresponding to `AF_PACKET`. |
| </span><span class="attribute">#[cfg(all( |
| feature = <span class="string">"all"</span>, |
| any(target_os = <span class="string">"android"</span>, target_os = <span class="string">"fuchsia"</span>, target_os = <span class="string">"linux"</span>) |
| ))] |
| #[cfg_attr( |
| docsrs, |
| doc(cfg(all( |
| feature = <span class="string">"all"</span>, |
| any(target_os = <span class="string">"android"</span>, target_os = <span class="string">"fuchsia"</span>, target_os = <span class="string">"linux"</span>) |
| ))) |
| )] |
| </span><span class="kw">pub const </span>PACKET: Domain = Domain(libc::AF_PACKET); |
| |
| <span class="doccomment">/// Domain for low-level VSOCK interface, corresponding to `AF_VSOCK`. |
| </span><span class="attribute">#[cfg(all(feature = <span class="string">"all"</span>, any(target_os = <span class="string">"android"</span>, target_os = <span class="string">"linux"</span>)))] |
| #[cfg_attr( |
| docsrs, |
| doc(cfg(all(feature = <span class="string">"all"</span>, any(target_os = <span class="string">"android"</span>, target_os = <span class="string">"linux"</span>)))) |
| )] |
| </span><span class="kw">pub const </span>VSOCK: Domain = Domain(libc::AF_VSOCK); |
| } |
| |
| <span class="macro">impl_debug!</span>( |
| Domain, |
| libc::AF_INET, |
| libc::AF_INET6, |
| libc::AF_UNIX, |
| <span class="attribute">#[cfg(any(target_os = <span class="string">"android"</span>, target_os = <span class="string">"fuchsia"</span>, target_os = <span class="string">"linux"</span>))] |
| #[cfg_attr( |
| docsrs, |
| doc(cfg(any(target_os = <span class="string">"android"</span>, target_os = <span class="string">"fuchsia"</span>, target_os = <span class="string">"linux"</span>))) |
| )] |
| </span>libc::AF_PACKET, |
| <span class="attribute">#[cfg(any(target_os = <span class="string">"android"</span>, target_os = <span class="string">"linux"</span>))] |
| #[cfg_attr(docsrs, doc(cfg(any(target_os = <span class="string">"android"</span>, target_os = <span class="string">"linux"</span>))))] |
| </span>libc::AF_VSOCK, |
| libc::AF_UNSPEC, <span class="comment">// = 0. |
| </span>); |
| |
| <span class="doccomment">/// Unix only API. |
| </span><span class="kw">impl </span>Type { |
| <span class="doccomment">/// Set `SOCK_NONBLOCK` on the `Type`. |
| </span><span class="attribute">#[cfg(all( |
| feature = <span class="string">"all"</span>, |
| any( |
| target_os = <span class="string">"android"</span>, |
| target_os = <span class="string">"dragonfly"</span>, |
| target_os = <span class="string">"freebsd"</span>, |
| target_os = <span class="string">"fuchsia"</span>, |
| target_os = <span class="string">"illumos"</span>, |
| target_os = <span class="string">"linux"</span>, |
| target_os = <span class="string">"netbsd"</span>, |
| target_os = <span class="string">"openbsd" |
| </span>) |
| ))] |
| #[cfg_attr( |
| docsrs, |
| doc(cfg(all( |
| feature = <span class="string">"all"</span>, |
| any( |
| target_os = <span class="string">"android"</span>, |
| target_os = <span class="string">"dragonfly"</span>, |
| target_os = <span class="string">"freebsd"</span>, |
| target_os = <span class="string">"fuchsia"</span>, |
| target_os = <span class="string">"illumos"</span>, |
| target_os = <span class="string">"linux"</span>, |
| target_os = <span class="string">"netbsd"</span>, |
| target_os = <span class="string">"openbsd" |
| </span>) |
| ))) |
| )] |
| </span><span class="kw">pub const fn </span>nonblocking(<span class="self">self</span>) -> Type { |
| Type(<span class="self">self</span>.<span class="number">0 </span>| libc::SOCK_NONBLOCK) |
| } |
| |
| <span class="doccomment">/// Set `SOCK_CLOEXEC` on the `Type`. |
| </span><span class="attribute">#[cfg(all( |
| feature = <span class="string">"all"</span>, |
| any( |
| target_os = <span class="string">"android"</span>, |
| target_os = <span class="string">"dragonfly"</span>, |
| target_os = <span class="string">"freebsd"</span>, |
| target_os = <span class="string">"fuchsia"</span>, |
| target_os = <span class="string">"illumos"</span>, |
| target_os = <span class="string">"linux"</span>, |
| target_os = <span class="string">"netbsd"</span>, |
| target_os = <span class="string">"openbsd" |
| </span>) |
| ))] |
| #[cfg_attr( |
| docsrs, |
| doc(cfg(all( |
| feature = <span class="string">"all"</span>, |
| any( |
| target_os = <span class="string">"android"</span>, |
| target_os = <span class="string">"dragonfly"</span>, |
| target_os = <span class="string">"freebsd"</span>, |
| target_os = <span class="string">"fuchsia"</span>, |
| target_os = <span class="string">"illumos"</span>, |
| target_os = <span class="string">"linux"</span>, |
| target_os = <span class="string">"netbsd"</span>, |
| target_os = <span class="string">"openbsd" |
| </span>) |
| ))) |
| )] |
| </span><span class="kw">pub const fn </span>cloexec(<span class="self">self</span>) -> Type { |
| <span class="self">self</span>._cloexec() |
| } |
| |
| <span class="attribute">#[cfg(any( |
| target_os = <span class="string">"android"</span>, |
| target_os = <span class="string">"dragonfly"</span>, |
| target_os = <span class="string">"freebsd"</span>, |
| target_os = <span class="string">"fuchsia"</span>, |
| target_os = <span class="string">"illumos"</span>, |
| target_os = <span class="string">"linux"</span>, |
| target_os = <span class="string">"netbsd"</span>, |
| target_os = <span class="string">"openbsd" |
| </span>))] |
| </span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">const fn </span>_cloexec(<span class="self">self</span>) -> Type { |
| Type(<span class="self">self</span>.<span class="number">0 </span>| libc::SOCK_CLOEXEC) |
| } |
| } |
| |
| <span class="macro">impl_debug!</span>( |
| Type, |
| libc::SOCK_STREAM, |
| libc::SOCK_DGRAM, |
| <span class="attribute">#[cfg(not(target_os = <span class="string">"redox"</span>))] |
| </span>libc::SOCK_RAW, |
| <span class="attribute">#[cfg(not(any(target_os = <span class="string">"redox"</span>, target_os = <span class="string">"haiku"</span>)))] |
| </span>libc::SOCK_RDM, |
| libc::SOCK_SEQPACKET, |
| <span class="comment">/* TODO: add these optional bit OR-ed flags: |
| #[cfg(any( |
| target_os = "android", |
| target_os = "dragonfly", |
| target_os = "freebsd", |
| target_os = "fuchsia", |
| target_os = "linux", |
| target_os = "netbsd", |
| target_os = "openbsd" |
| ))] |
| libc::SOCK_NONBLOCK, |
| #[cfg(any( |
| target_os = "android", |
| target_os = "dragonfly", |
| target_os = "freebsd", |
| target_os = "fuchsia", |
| target_os = "linux", |
| target_os = "netbsd", |
| target_os = "openbsd" |
| ))] |
| libc::SOCK_CLOEXEC, |
| */ |
| </span>); |
| |
| <span class="macro">impl_debug!</span>( |
| Protocol, |
| libc::IPPROTO_ICMP, |
| libc::IPPROTO_ICMPV6, |
| libc::IPPROTO_TCP, |
| libc::IPPROTO_UDP, |
| ); |
| |
| <span class="doccomment">/// Unix-only API. |
| </span><span class="attribute">#[cfg(not(target_os = <span class="string">"redox"</span>))] |
| </span><span class="kw">impl </span>RecvFlags { |
| <span class="doccomment">/// Check if the message terminates a record. |
| /// |
| /// Not all socket types support the notion of records. |
| /// For socket types that do support it (such as [`SEQPACKET`][Type::SEQPACKET]), |
| /// a record is terminated by sending a message with the end-of-record flag set. |
| /// |
| /// On Unix this corresponds to the MSG_EOR flag. |
| </span><span class="kw">pub const fn </span>is_end_of_record(<span class="self">self</span>) -> bool { |
| <span class="self">self</span>.<span class="number">0 </span>& libc::MSG_EOR != <span class="number">0 |
| </span>} |
| |
| <span class="doccomment">/// Check if the message contains out-of-band data. |
| /// |
| /// This is useful for protocols where you receive out-of-band data |
| /// mixed in with the normal data stream. |
| /// |
| /// On Unix this corresponds to the MSG_OOB flag. |
| </span><span class="kw">pub const fn </span>is_out_of_band(<span class="self">self</span>) -> bool { |
| <span class="self">self</span>.<span class="number">0 </span>& libc::MSG_OOB != <span class="number">0 |
| </span>} |
| } |
| |
| <span class="attribute">#[cfg(not(target_os = <span class="string">"redox"</span>))] |
| </span><span class="kw">impl </span>std::fmt::Debug <span class="kw">for </span>RecvFlags { |
| <span class="kw">fn </span>fmt(<span class="kw-2">&</span><span class="self">self</span>, f: <span class="kw-2">&mut </span>std::fmt::Formatter<<span class="lifetime">'_</span>>) -> std::fmt::Result { |
| f.debug_struct(<span class="string">"RecvFlags"</span>) |
| .field(<span class="string">"is_end_of_record"</span>, <span class="kw-2">&</span><span class="self">self</span>.is_end_of_record()) |
| .field(<span class="string">"is_out_of_band"</span>, <span class="kw-2">&</span><span class="self">self</span>.is_out_of_band()) |
| .field(<span class="string">"is_truncated"</span>, <span class="kw-2">&</span><span class="self">self</span>.is_truncated()) |
| .finish() |
| } |
| } |
| |
| <span class="attribute">#[repr(transparent)] |
| </span><span class="kw">pub struct </span>MaybeUninitSlice<<span class="lifetime">'a</span>> { |
| vec: libc::iovec, |
| _lifetime: PhantomData<<span class="kw-2">&</span><span class="lifetime">'a </span><span class="kw-2">mut </span>[MaybeUninit<u8>]>, |
| } |
| |
| <span class="kw">unsafe impl</span><<span class="lifetime">'a</span>> Send <span class="kw">for </span>MaybeUninitSlice<<span class="lifetime">'a</span>> {} |
| |
| <span class="kw">unsafe impl</span><<span class="lifetime">'a</span>> Sync <span class="kw">for </span>MaybeUninitSlice<<span class="lifetime">'a</span>> {} |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>> MaybeUninitSlice<<span class="lifetime">'a</span>> { |
| <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>new(buf: <span class="kw-2">&</span><span class="lifetime">'a </span><span class="kw-2">mut </span>[MaybeUninit<u8>]) -> MaybeUninitSlice<<span class="lifetime">'a</span>> { |
| MaybeUninitSlice { |
| vec: libc::iovec { |
| iov_base: buf.as_mut_ptr().cast(), |
| iov_len: buf.len(), |
| }, |
| _lifetime: PhantomData, |
| } |
| } |
| |
| <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>as_slice(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="kw-2">&</span>[MaybeUninit<u8>] { |
| <span class="kw">unsafe </span>{ slice::from_raw_parts(<span class="self">self</span>.vec.iov_base.cast(), <span class="self">self</span>.vec.iov_len) } |
| } |
| |
| <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>as_mut_slice(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="kw-2">&mut </span>[MaybeUninit<u8>] { |
| <span class="kw">unsafe </span>{ slice::from_raw_parts_mut(<span class="self">self</span>.vec.iov_base.cast(), <span class="self">self</span>.vec.iov_len) } |
| } |
| } |
| |
| <span class="doccomment">/// Unix only API. |
| </span><span class="kw">impl </span>SockAddr { |
| <span class="doccomment">/// Constructs a `SockAddr` with the family `AF_UNIX` and the provided path. |
| /// |
| /// # Failure |
| /// |
| /// Returns an error if the path is longer than `SUN_LEN`. |
| </span><span class="attribute">#[cfg(feature = <span class="string">"all"</span>)] |
| #[cfg_attr(docsrs, doc(cfg(all(unix, feature = <span class="string">"all"</span>))))] |
| #[allow(unused_unsafe)] </span><span class="comment">// TODO: replace with `unsafe_op_in_unsafe_fn` once stable. |
| </span><span class="kw">pub fn </span>unix<P>(path: P) -> io::Result<SockAddr> |
| <span class="kw">where |
| </span>P: AsRef<Path>, |
| { |
| <span class="kw">unsafe </span>{ |
| SockAddr::init(|storage, len| { |
| <span class="comment">// Safety: `SockAddr::init` zeros the address, which is a valid |
| // representation. |
| </span><span class="kw">let </span>storage: <span class="kw-2">&mut </span>libc::sockaddr_un = <span class="kw">unsafe </span>{ <span class="kw-2">&mut *</span>storage.cast() }; |
| <span class="kw">let </span>len: <span class="kw-2">&mut </span>socklen_t = <span class="kw">unsafe </span>{ <span class="kw-2">&mut *</span>len }; |
| |
| <span class="kw">let </span>bytes = path.as_ref().as_os_str().as_bytes(); |
| <span class="kw">let </span>too_long = <span class="kw">match </span>bytes.first() { |
| <span class="prelude-val">None </span>=> <span class="bool-val">false</span>, |
| <span class="comment">// linux abstract namespaces aren't null-terminated |
| </span><span class="prelude-val">Some</span>(<span class="kw-2">&</span><span class="number">0</span>) => bytes.len() > storage.sun_path.len(), |
| <span class="prelude-val">Some</span>(<span class="kw">_</span>) => bytes.len() >= storage.sun_path.len(), |
| }; |
| <span class="kw">if </span>too_long { |
| <span class="kw">return </span><span class="prelude-val">Err</span>(io::Error::new( |
| io::ErrorKind::InvalidInput, |
| <span class="string">"path must be shorter than SUN_LEN"</span>, |
| )); |
| } |
| |
| storage.sun_family = libc::AF_UNIX <span class="kw">as </span>sa_family_t; |
| <span class="comment">// Safety: `bytes` and `addr.sun_path` are not overlapping and |
| // both point to valid memory. |
| // `SockAddr::init` zeroes the memory, so the path is already |
| // null terminated. |
| </span><span class="kw">unsafe </span>{ |
| ptr::copy_nonoverlapping( |
| bytes.as_ptr(), |
| storage.sun_path.as_mut_ptr() <span class="kw">as </span><span class="kw-2">*mut </span>u8, |
| bytes.len(), |
| ) |
| }; |
| |
| <span class="kw">let </span>base = storage <span class="kw">as </span><span class="kw-2">*const </span><span class="kw">_ as </span>usize; |
| <span class="kw">let </span>path = <span class="kw-2">&</span>storage.sun_path <span class="kw">as </span><span class="kw-2">*const </span><span class="kw">_ as </span>usize; |
| <span class="kw">let </span>sun_path_offset = path - base; |
| <span class="kw">let </span>length = sun_path_offset |
| + bytes.len() |
| + <span class="kw">match </span>bytes.first() { |
| <span class="prelude-val">Some</span>(<span class="kw-2">&</span><span class="number">0</span>) | <span class="prelude-val">None </span>=> <span class="number">0</span>, |
| <span class="prelude-val">Some</span>(<span class="kw">_</span>) => <span class="number">1</span>, |
| }; |
| <span class="kw-2">*</span>len = length <span class="kw">as </span>socklen_t; |
| |
| <span class="prelude-val">Ok</span>(()) |
| }) |
| } |
| .map(|(<span class="kw">_</span>, addr)| addr) |
| } |
| } |
| |
| <span class="kw">impl </span>SockAddr { |
| <span class="doccomment">/// Constructs a `SockAddr` with the family `AF_VSOCK` and the provided CID/port. |
| /// |
| /// # Errors |
| /// |
| /// This function can never fail. In a future version of this library it will be made |
| /// infallible. |
| </span><span class="attribute">#[allow(unused_unsafe)] </span><span class="comment">// TODO: replace with `unsafe_op_in_unsafe_fn` once stable. |
| </span><span class="attribute">#[cfg(all(feature = <span class="string">"all"</span>, any(target_os = <span class="string">"android"</span>, target_os = <span class="string">"linux"</span>)))] |
| #[cfg_attr( |
| docsrs, |
| doc(cfg(all(feature = <span class="string">"all"</span>, any(target_os = <span class="string">"android"</span>, target_os = <span class="string">"linux"</span>)))) |
| )] |
| </span><span class="kw">pub fn </span>vsock(cid: u32, port: u32) -> io::Result<SockAddr> { |
| <span class="kw">unsafe </span>{ |
| SockAddr::init(|storage, len| { |
| <span class="comment">// Safety: `SockAddr::init` zeros the address, which is a valid |
| // representation. |
| </span><span class="kw">let </span>storage: <span class="kw-2">&mut </span>libc::sockaddr_vm = <span class="kw">unsafe </span>{ <span class="kw-2">&mut *</span>storage.cast() }; |
| <span class="kw">let </span>len: <span class="kw-2">&mut </span>socklen_t = <span class="kw">unsafe </span>{ <span class="kw-2">&mut *</span>len }; |
| |
| storage.svm_family = libc::AF_VSOCK <span class="kw">as </span>sa_family_t; |
| storage.svm_cid = cid; |
| storage.svm_port = port; |
| |
| <span class="kw-2">*</span>len = mem::size_of::<libc::sockaddr_vm>() <span class="kw">as </span>socklen_t; |
| |
| <span class="prelude-val">Ok</span>(()) |
| }) |
| } |
| .map(|(<span class="kw">_</span>, addr)| addr) |
| } |
| |
| <span class="doccomment">/// Returns this address VSOCK CID/port if it is in the `AF_VSOCK` family, |
| /// otherwise return `None`. |
| </span><span class="attribute">#[cfg(all(feature = <span class="string">"all"</span>, any(target_os = <span class="string">"android"</span>, target_os = <span class="string">"linux"</span>)))] |
| #[cfg_attr( |
| docsrs, |
| doc(cfg(all(feature = <span class="string">"all"</span>, any(target_os = <span class="string">"android"</span>, target_os = <span class="string">"linux"</span>)))) |
| )] |
| </span><span class="kw">pub fn </span>vsock_address(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="prelude-ty">Option</span><(u32, u32)> { |
| <span class="kw">if </span><span class="self">self</span>.family() == libc::AF_VSOCK <span class="kw">as </span>sa_family_t { |
| <span class="comment">// Safety: if the ss_family field is AF_VSOCK then storage must be a sockaddr_vm. |
| </span><span class="kw">let </span>addr = <span class="kw">unsafe </span>{ <span class="kw-2">&*</span>(<span class="self">self</span>.as_ptr() <span class="kw">as </span><span class="kw-2">*const </span>libc::sockaddr_vm) }; |
| <span class="prelude-val">Some</span>((addr.svm_cid, addr.svm_port)) |
| } <span class="kw">else </span>{ |
| <span class="prelude-val">None |
| </span>} |
| } |
| } |
| |
| <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">type </span>Socket = c_int; |
| |
| <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">unsafe fn </span>socket_from_raw(socket: Socket) -> <span class="kw">crate</span>::socket::Inner { |
| <span class="kw">crate</span>::socket::Inner::from_raw_fd(socket) |
| } |
| |
| <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>socket_as_raw(socket: <span class="kw-2">&</span><span class="kw">crate</span>::socket::Inner) -> Socket { |
| socket.as_raw_fd() |
| } |
| |
| <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>socket_into_raw(socket: <span class="kw">crate</span>::socket::Inner) -> Socket { |
| socket.into_raw_fd() |
| } |
| |
| <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>socket(family: c_int, ty: c_int, protocol: c_int) -> io::Result<Socket> { |
| <span class="macro">syscall!</span>(socket(family, ty, protocol)) |
| } |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"all"</span>)] |
| </span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>socketpair(family: c_int, ty: c_int, protocol: c_int) -> io::Result<[Socket; <span class="number">2</span>]> { |
| <span class="kw">let </span><span class="kw-2">mut </span>fds = [<span class="number">0</span>, <span class="number">0</span>]; |
| <span class="macro">syscall!</span>(socketpair(family, ty, protocol, fds.as_mut_ptr())).map(|<span class="kw">_</span>| fds) |
| } |
| |
| <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>bind(fd: Socket, addr: <span class="kw-2">&</span>SockAddr) -> io::Result<()> { |
| <span class="macro">syscall!</span>(bind(fd, addr.as_ptr(), addr.len() <span class="kw">as _</span>)).map(|<span class="kw">_</span>| ()) |
| } |
| |
| <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>connect(fd: Socket, addr: <span class="kw-2">&</span>SockAddr) -> io::Result<()> { |
| <span class="macro">syscall!</span>(connect(fd, addr.as_ptr(), addr.len())).map(|<span class="kw">_</span>| ()) |
| } |
| |
| <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>poll_connect(socket: <span class="kw-2">&</span><span class="kw">crate</span>::Socket, timeout: Duration) -> io::Result<()> { |
| <span class="kw">let </span>start = Instant::now(); |
| |
| <span class="kw">let </span><span class="kw-2">mut </span>pollfd = libc::pollfd { |
| fd: socket.as_raw(), |
| events: libc::POLLIN | libc::POLLOUT, |
| revents: <span class="number">0</span>, |
| }; |
| |
| <span class="kw">loop </span>{ |
| <span class="kw">let </span>elapsed = start.elapsed(); |
| <span class="kw">if </span>elapsed >= timeout { |
| <span class="kw">return </span><span class="prelude-val">Err</span>(io::ErrorKind::TimedOut.into()); |
| } |
| |
| <span class="kw">let </span>timeout = (timeout - elapsed).as_millis(); |
| <span class="kw">let </span>timeout = clamp(timeout, <span class="number">1</span>, c_int::max_value() <span class="kw">as </span>u128) <span class="kw">as </span>c_int; |
| |
| <span class="kw">match </span><span class="macro">syscall!</span>(poll(<span class="kw-2">&mut </span>pollfd, <span class="number">1</span>, timeout)) { |
| <span class="prelude-val">Ok</span>(<span class="number">0</span>) => <span class="kw">return </span><span class="prelude-val">Err</span>(io::ErrorKind::TimedOut.into()), |
| <span class="prelude-val">Ok</span>(<span class="kw">_</span>) => { |
| <span class="comment">// Error or hang up indicates an error (or failure to connect). |
| </span><span class="kw">if </span>(pollfd.revents & libc::POLLHUP) != <span class="number">0 </span>|| (pollfd.revents & libc::POLLERR) != <span class="number">0 </span>{ |
| <span class="kw">match </span>socket.take_error() { |
| <span class="prelude-val">Ok</span>(<span class="prelude-val">Some</span>(err)) => <span class="kw">return </span><span class="prelude-val">Err</span>(err), |
| <span class="prelude-val">Ok</span>(<span class="prelude-val">None</span>) => { |
| <span class="kw">return </span><span class="prelude-val">Err</span>(io::Error::new( |
| io::ErrorKind::Other, |
| <span class="string">"no error set after POLLHUP"</span>, |
| )) |
| } |
| <span class="prelude-val">Err</span>(err) => <span class="kw">return </span><span class="prelude-val">Err</span>(err), |
| } |
| } |
| <span class="kw">return </span><span class="prelude-val">Ok</span>(()); |
| } |
| <span class="comment">// Got interrupted, try again. |
| </span><span class="prelude-val">Err</span>(<span class="kw-2">ref </span>err) <span class="kw">if </span>err.kind() == io::ErrorKind::Interrupted => <span class="kw">continue</span>, |
| <span class="prelude-val">Err</span>(err) => <span class="kw">return </span><span class="prelude-val">Err</span>(err), |
| } |
| } |
| } |
| |
| <span class="comment">// TODO: use clamp from std lib, stable since 1.50. |
| </span><span class="kw">fn </span>clamp<T>(value: T, min: T, max: T) -> T |
| <span class="kw">where |
| </span>T: Ord, |
| { |
| <span class="kw">if </span>value <= min { |
| min |
| } <span class="kw">else if </span>value >= max { |
| max |
| } <span class="kw">else </span>{ |
| value |
| } |
| } |
| |
| <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>listen(fd: Socket, backlog: c_int) -> io::Result<()> { |
| <span class="macro">syscall!</span>(listen(fd, backlog)).map(|<span class="kw">_</span>| ()) |
| } |
| |
| <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>accept(fd: Socket) -> io::Result<(Socket, SockAddr)> { |
| <span class="comment">// Safety: `accept` initialises the `SockAddr` for us. |
| </span><span class="kw">unsafe </span>{ SockAddr::init(|storage, len| <span class="macro">syscall!</span>(accept(fd, storage.cast(), len))) } |
| } |
| |
| <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>getsockname(fd: Socket) -> io::Result<SockAddr> { |
| <span class="comment">// Safety: `accept` initialises the `SockAddr` for us. |
| </span><span class="kw">unsafe </span>{ SockAddr::init(|storage, len| <span class="macro">syscall!</span>(getsockname(fd, storage.cast(), len))) } |
| .map(|(<span class="kw">_</span>, addr)| addr) |
| } |
| |
| <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>getpeername(fd: Socket) -> io::Result<SockAddr> { |
| <span class="comment">// Safety: `accept` initialises the `SockAddr` for us. |
| </span><span class="kw">unsafe </span>{ SockAddr::init(|storage, len| <span class="macro">syscall!</span>(getpeername(fd, storage.cast(), len))) } |
| .map(|(<span class="kw">_</span>, addr)| addr) |
| } |
| |
| <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>try_clone(fd: Socket) -> io::Result<Socket> { |
| <span class="macro">syscall!</span>(fcntl(fd, libc::F_DUPFD_CLOEXEC, <span class="number">0</span>)) |
| } |
| |
| <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>set_nonblocking(fd: Socket, nonblocking: bool) -> io::Result<()> { |
| <span class="kw">if </span>nonblocking { |
| fcntl_add(fd, libc::F_GETFL, libc::F_SETFL, libc::O_NONBLOCK) |
| } <span class="kw">else </span>{ |
| fcntl_remove(fd, libc::F_GETFL, libc::F_SETFL, libc::O_NONBLOCK) |
| } |
| } |
| |
| <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>shutdown(fd: Socket, how: Shutdown) -> io::Result<()> { |
| <span class="kw">let </span>how = <span class="kw">match </span>how { |
| Shutdown::Write => libc::SHUT_WR, |
| Shutdown::Read => libc::SHUT_RD, |
| Shutdown::Both => libc::SHUT_RDWR, |
| }; |
| <span class="macro">syscall!</span>(shutdown(fd, how)).map(|<span class="kw">_</span>| ()) |
| } |
| |
| <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>recv(fd: Socket, buf: <span class="kw-2">&mut </span>[MaybeUninit<u8>], flags: c_int) -> io::Result<usize> { |
| <span class="macro">syscall!</span>(recv( |
| fd, |
| buf.as_mut_ptr().cast(), |
| min(buf.len(), MAX_BUF_LEN), |
| flags, |
| )) |
| .map(|n| n <span class="kw">as </span>usize) |
| } |
| |
| <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>recv_from( |
| fd: Socket, |
| buf: <span class="kw-2">&mut </span>[MaybeUninit<u8>], |
| flags: c_int, |
| ) -> io::Result<(usize, SockAddr)> { |
| <span class="comment">// Safety: `recvfrom` initialises the `SockAddr` for us. |
| </span><span class="kw">unsafe </span>{ |
| SockAddr::init(|addr, addrlen| { |
| <span class="macro">syscall!</span>(recvfrom( |
| fd, |
| buf.as_mut_ptr().cast(), |
| min(buf.len(), MAX_BUF_LEN), |
| flags, |
| addr.cast(), |
| addrlen |
| )) |
| .map(|n| n <span class="kw">as </span>usize) |
| }) |
| } |
| } |
| |
| <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>peek_sender(fd: Socket) -> io::Result<SockAddr> { |
| <span class="comment">// Unix-like platforms simply truncate the returned data, so this implementation is trivial. |
| // However, for Windows this requires suppressing the `WSAEMSGSIZE` error, |
| // so that requires a different approach. |
| // NOTE: macOS does not populate `sockaddr` if you pass a zero-sized buffer. |
| </span><span class="kw">let </span>(<span class="kw">_</span>, sender) = recv_from(fd, <span class="kw-2">&mut </span>[MaybeUninit::uninit(); <span class="number">8</span>], MSG_PEEK)<span class="question-mark">?</span>; |
| <span class="prelude-val">Ok</span>(sender) |
| } |
| |
| <span class="attribute">#[cfg(not(target_os = <span class="string">"redox"</span>))] |
| </span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>recv_vectored( |
| fd: Socket, |
| bufs: <span class="kw-2">&mut </span>[<span class="kw">crate</span>::MaybeUninitSlice<<span class="lifetime">'_</span>>], |
| flags: c_int, |
| ) -> io::Result<(usize, RecvFlags)> { |
| recvmsg(fd, ptr::null_mut(), bufs, flags).map(|(n, <span class="kw">_</span>, recv_flags)| (n, recv_flags)) |
| } |
| |
| <span class="attribute">#[cfg(not(target_os = <span class="string">"redox"</span>))] |
| </span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>recv_from_vectored( |
| fd: Socket, |
| bufs: <span class="kw-2">&mut </span>[<span class="kw">crate</span>::MaybeUninitSlice<<span class="lifetime">'_</span>>], |
| flags: c_int, |
| ) -> io::Result<(usize, RecvFlags, SockAddr)> { |
| <span class="comment">// Safety: `recvmsg` initialises the address storage and we set the length |
| // manually. |
| </span><span class="kw">unsafe </span>{ |
| SockAddr::init(|storage, len| { |
| recvmsg(fd, storage, bufs, flags).map(|(n, addrlen, recv_flags)| { |
| <span class="comment">// Set the correct address length. |
| </span><span class="kw-2">*</span>len = addrlen; |
| (n, recv_flags) |
| }) |
| }) |
| } |
| .map(|((n, recv_flags), addr)| (n, recv_flags, addr)) |
| } |
| |
| <span class="doccomment">/// Returns the (bytes received, sending address len, `RecvFlags`). |
| </span><span class="attribute">#[cfg(not(target_os = <span class="string">"redox"</span>))] |
| </span><span class="kw">fn </span>recvmsg( |
| fd: Socket, |
| msg_name: <span class="kw-2">*mut </span>sockaddr_storage, |
| bufs: <span class="kw-2">&mut </span>[<span class="kw">crate</span>::MaybeUninitSlice<<span class="lifetime">'_</span>>], |
| flags: c_int, |
| ) -> io::Result<(usize, libc::socklen_t, RecvFlags)> { |
| <span class="kw">let </span>msg_namelen = <span class="kw">if </span>msg_name.is_null() { |
| <span class="number">0 |
| </span>} <span class="kw">else </span>{ |
| size_of::<sockaddr_storage>() <span class="kw">as </span>libc::socklen_t |
| }; |
| <span class="comment">// libc::msghdr contains unexported padding fields on Fuchsia. |
| </span><span class="kw">let </span><span class="kw-2">mut </span>msg: libc::msghdr = <span class="kw">unsafe </span>{ mem::zeroed() }; |
| msg.msg_name = msg_name.cast(); |
| msg.msg_namelen = msg_namelen; |
| msg.msg_iov = bufs.as_mut_ptr().cast(); |
| msg.msg_iovlen = min(bufs.len(), IovLen::MAX <span class="kw">as </span>usize) <span class="kw">as </span>IovLen; |
| <span class="macro">syscall!</span>(recvmsg(fd, <span class="kw-2">&mut </span>msg, flags)) |
| .map(|n| (n <span class="kw">as </span>usize, msg.msg_namelen, RecvFlags(msg.msg_flags))) |
| } |
| |
| <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>send(fd: Socket, buf: <span class="kw-2">&</span>[u8], flags: c_int) -> io::Result<usize> { |
| <span class="macro">syscall!</span>(send( |
| fd, |
| buf.as_ptr().cast(), |
| min(buf.len(), MAX_BUF_LEN), |
| flags, |
| )) |
| .map(|n| n <span class="kw">as </span>usize) |
| } |
| |
| <span class="attribute">#[cfg(not(target_os = <span class="string">"redox"</span>))] |
| </span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>send_vectored(fd: Socket, bufs: <span class="kw-2">&</span>[IoSlice<<span class="lifetime">'_</span>>], flags: c_int) -> io::Result<usize> { |
| sendmsg(fd, ptr::null(), <span class="number">0</span>, bufs, flags) |
| } |
| |
| <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>send_to(fd: Socket, buf: <span class="kw-2">&</span>[u8], addr: <span class="kw-2">&</span>SockAddr, flags: c_int) -> io::Result<usize> { |
| <span class="macro">syscall!</span>(sendto( |
| fd, |
| buf.as_ptr().cast(), |
| min(buf.len(), MAX_BUF_LEN), |
| flags, |
| addr.as_ptr(), |
| addr.len(), |
| )) |
| .map(|n| n <span class="kw">as </span>usize) |
| } |
| |
| <span class="attribute">#[cfg(not(target_os = <span class="string">"redox"</span>))] |
| </span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>send_to_vectored( |
| fd: Socket, |
| bufs: <span class="kw-2">&</span>[IoSlice<<span class="lifetime">'_</span>>], |
| addr: <span class="kw-2">&</span>SockAddr, |
| flags: c_int, |
| ) -> io::Result<usize> { |
| sendmsg(fd, addr.as_storage_ptr(), addr.len(), bufs, flags) |
| } |
| |
| <span class="doccomment">/// Returns the (bytes received, sending address len, `RecvFlags`). |
| </span><span class="attribute">#[cfg(not(target_os = <span class="string">"redox"</span>))] |
| </span><span class="kw">fn </span>sendmsg( |
| fd: Socket, |
| msg_name: <span class="kw-2">*const </span>sockaddr_storage, |
| msg_namelen: socklen_t, |
| bufs: <span class="kw-2">&</span>[IoSlice<<span class="lifetime">'_</span>>], |
| flags: c_int, |
| ) -> io::Result<usize> { |
| <span class="comment">// libc::msghdr contains unexported padding fields on Fuchsia. |
| </span><span class="kw">let </span><span class="kw-2">mut </span>msg: libc::msghdr = <span class="kw">unsafe </span>{ mem::zeroed() }; |
| <span class="comment">// Safety: we're creating a `*mut` pointer from a reference, which is UB |
| // once actually used. However the OS should not write to it in the |
| // `sendmsg` system call. |
| </span>msg.msg_name = (msg_name <span class="kw">as </span><span class="kw-2">*mut </span>sockaddr_storage).cast(); |
| msg.msg_namelen = msg_namelen; |
| <span class="comment">// Safety: Same as above about `*const` -> `*mut`. |
| </span>msg.msg_iov = bufs.as_ptr() <span class="kw">as </span><span class="kw-2">*mut </span><span class="kw">_</span>; |
| msg.msg_iovlen = min(bufs.len(), IovLen::MAX <span class="kw">as </span>usize) <span class="kw">as </span>IovLen; |
| <span class="macro">syscall!</span>(sendmsg(fd, <span class="kw-2">&</span>msg, flags)).map(|n| n <span class="kw">as </span>usize) |
| } |
| |
| <span class="doccomment">/// Wrapper around `getsockopt` to deal with platform specific timeouts. |
| </span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>timeout_opt(fd: Socket, opt: c_int, val: c_int) -> io::Result<<span class="prelude-ty">Option</span><Duration>> { |
| <span class="kw">unsafe </span>{ getsockopt(fd, opt, val).map(from_timeval) } |
| } |
| |
| <span class="kw">fn </span>from_timeval(duration: libc::timeval) -> <span class="prelude-ty">Option</span><Duration> { |
| <span class="kw">if </span>duration.tv_sec == <span class="number">0 </span>&& duration.tv_usec == <span class="number">0 </span>{ |
| <span class="prelude-val">None |
| </span>} <span class="kw">else </span>{ |
| <span class="kw">let </span>sec = duration.tv_sec <span class="kw">as </span>u64; |
| <span class="kw">let </span>nsec = (duration.tv_usec <span class="kw">as </span>u32) * <span class="number">1000</span>; |
| <span class="prelude-val">Some</span>(Duration::new(sec, nsec)) |
| } |
| } |
| |
| <span class="doccomment">/// Wrapper around `setsockopt` to deal with platform specific timeouts. |
| </span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>set_timeout_opt( |
| fd: Socket, |
| opt: c_int, |
| val: c_int, |
| duration: <span class="prelude-ty">Option</span><Duration>, |
| ) -> io::Result<()> { |
| <span class="kw">let </span>duration = into_timeval(duration); |
| <span class="kw">unsafe </span>{ setsockopt(fd, opt, val, duration) } |
| } |
| |
| <span class="kw">fn </span>into_timeval(duration: <span class="prelude-ty">Option</span><Duration>) -> libc::timeval { |
| <span class="kw">match </span>duration { |
| <span class="comment">// https://github.com/rust-lang/libc/issues/1848 |
| </span><span class="attribute">#[cfg_attr(target_env = <span class="string">"musl"</span>, allow(deprecated))] |
| </span><span class="prelude-val">Some</span>(duration) => libc::timeval { |
| tv_sec: min(duration.as_secs(), libc::time_t::max_value() <span class="kw">as </span>u64) <span class="kw">as </span>libc::time_t, |
| tv_usec: duration.subsec_micros() <span class="kw">as </span>libc::suseconds_t, |
| }, |
| <span class="prelude-val">None </span>=> libc::timeval { |
| tv_sec: <span class="number">0</span>, |
| tv_usec: <span class="number">0</span>, |
| }, |
| } |
| } |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"all"</span>)] |
| #[cfg(not(any(target_os = <span class="string">"haiku"</span>, target_os = <span class="string">"openbsd"</span>)))] |
| </span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>keepalive_time(fd: Socket) -> io::Result<Duration> { |
| <span class="kw">unsafe </span>{ |
| getsockopt::<c_int>(fd, IPPROTO_TCP, KEEPALIVE_TIME) |
| .map(|secs| Duration::from_secs(secs <span class="kw">as </span>u64)) |
| } |
| } |
| |
| <span class="attribute">#[allow(unused_variables)] |
| </span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>set_tcp_keepalive(fd: Socket, keepalive: <span class="kw-2">&</span>TcpKeepalive) -> io::Result<()> { |
| <span class="attribute">#[cfg(not(any(target_os = <span class="string">"haiku"</span>, target_os = <span class="string">"openbsd"</span>, target_os = <span class="string">"nto"</span>)))] |
| </span><span class="kw">if let </span><span class="prelude-val">Some</span>(time) = keepalive.time { |
| <span class="kw">let </span>secs = into_secs(time); |
| <span class="kw">unsafe </span>{ setsockopt(fd, libc::IPPROTO_TCP, KEEPALIVE_TIME, secs)<span class="question-mark">? </span>} |
| } |
| |
| <span class="attribute">#[cfg(any( |
| target_os = <span class="string">"android"</span>, |
| target_os = <span class="string">"dragonfly"</span>, |
| target_os = <span class="string">"freebsd"</span>, |
| target_os = <span class="string">"fuchsia"</span>, |
| target_os = <span class="string">"illumos"</span>, |
| target_os = <span class="string">"linux"</span>, |
| target_os = <span class="string">"netbsd"</span>, |
| target_vendor = <span class="string">"apple"</span>, |
| ))] |
| </span>{ |
| <span class="kw">if let </span><span class="prelude-val">Some</span>(interval) = keepalive.interval { |
| <span class="kw">let </span>secs = into_secs(interval); |
| <span class="kw">unsafe </span>{ setsockopt(fd, libc::IPPROTO_TCP, libc::TCP_KEEPINTVL, secs)<span class="question-mark">? </span>} |
| } |
| |
| <span class="kw">if let </span><span class="prelude-val">Some</span>(retries) = keepalive.retries { |
| <span class="kw">unsafe </span>{ setsockopt(fd, libc::IPPROTO_TCP, libc::TCP_KEEPCNT, retries <span class="kw">as </span>c_int)<span class="question-mark">? </span>} |
| } |
| } |
| |
| <span class="attribute">#[cfg(target_os = <span class="string">"nto"</span>)] |
| </span><span class="kw">if let </span><span class="prelude-val">Some</span>(time) = keepalive.time { |
| <span class="kw">let </span>secs = into_timeval(<span class="prelude-val">Some</span>(time)); |
| <span class="kw">unsafe </span>{ setsockopt(fd, libc::IPPROTO_TCP, KEEPALIVE_TIME, secs)<span class="question-mark">? </span>} |
| } |
| |
| <span class="prelude-val">Ok</span>(()) |
| } |
| |
| <span class="attribute">#[cfg(not(any(target_os = <span class="string">"haiku"</span>, target_os = <span class="string">"openbsd"</span>, target_os = <span class="string">"nto"</span>)))] |
| </span><span class="kw">fn </span>into_secs(duration: Duration) -> c_int { |
| min(duration.as_secs(), c_int::max_value() <span class="kw">as </span>u64) <span class="kw">as </span>c_int |
| } |
| |
| <span class="doccomment">/// Add `flag` to the current set flags of `F_GETFD`. |
| </span><span class="kw">fn </span>fcntl_add(fd: Socket, get_cmd: c_int, set_cmd: c_int, flag: c_int) -> io::Result<()> { |
| <span class="kw">let </span>previous = <span class="macro">syscall!</span>(fcntl(fd, get_cmd))<span class="question-mark">?</span>; |
| <span class="kw">let </span>new = previous | flag; |
| <span class="kw">if </span>new != previous { |
| <span class="macro">syscall!</span>(fcntl(fd, set_cmd, new)).map(|<span class="kw">_</span>| ()) |
| } <span class="kw">else </span>{ |
| <span class="comment">// Flag was already set. |
| </span><span class="prelude-val">Ok</span>(()) |
| } |
| } |
| |
| <span class="doccomment">/// Remove `flag` to the current set flags of `F_GETFD`. |
| </span><span class="kw">fn </span>fcntl_remove(fd: Socket, get_cmd: c_int, set_cmd: c_int, flag: c_int) -> io::Result<()> { |
| <span class="kw">let </span>previous = <span class="macro">syscall!</span>(fcntl(fd, get_cmd))<span class="question-mark">?</span>; |
| <span class="kw">let </span>new = previous & !flag; |
| <span class="kw">if </span>new != previous { |
| <span class="macro">syscall!</span>(fcntl(fd, set_cmd, new)).map(|<span class="kw">_</span>| ()) |
| } <span class="kw">else </span>{ |
| <span class="comment">// Flag was already set. |
| </span><span class="prelude-val">Ok</span>(()) |
| } |
| } |
| |
| <span class="doccomment">/// Caller must ensure `T` is the correct type for `opt` and `val`. |
| </span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">unsafe fn </span>getsockopt<T>(fd: Socket, opt: c_int, val: c_int) -> io::Result<T> { |
| <span class="kw">let </span><span class="kw-2">mut </span>payload: MaybeUninit<T> = MaybeUninit::uninit(); |
| <span class="kw">let </span><span class="kw-2">mut </span>len = size_of::<T>() <span class="kw">as </span>libc::socklen_t; |
| <span class="macro">syscall!</span>(getsockopt( |
| fd, |
| opt, |
| val, |
| payload.as_mut_ptr().cast(), |
| <span class="kw-2">&mut </span>len, |
| )) |
| .map(|<span class="kw">_</span>| { |
| <span class="macro">debug_assert_eq!</span>(len <span class="kw">as </span>usize, size_of::<T>()); |
| <span class="comment">// Safety: `getsockopt` initialised `payload` for us. |
| </span>payload.assume_init() |
| }) |
| } |
| |
| <span class="doccomment">/// Caller must ensure `T` is the correct type for `opt` and `val`. |
| </span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">unsafe fn </span>setsockopt<T>( |
| fd: Socket, |
| opt: c_int, |
| val: c_int, |
| payload: T, |
| ) -> io::Result<()> { |
| <span class="kw">let </span>payload = <span class="kw-2">&</span>payload <span class="kw">as </span><span class="kw-2">*const </span>T <span class="kw">as </span><span class="kw-2">*const </span>c_void; |
| <span class="macro">syscall!</span>(setsockopt( |
| fd, |
| opt, |
| val, |
| payload, |
| mem::size_of::<T>() <span class="kw">as </span>libc::socklen_t, |
| )) |
| .map(|<span class="kw">_</span>| ()) |
| } |
| |
| <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>to_in_addr(addr: <span class="kw-2">&</span>Ipv4Addr) -> in_addr { |
| <span class="comment">// `s_addr` is stored as BE on all machines, and the array is in BE order. |
| // So the native endian conversion method is used so that it's never |
| // swapped. |
| </span>in_addr { |
| s_addr: u32::from_ne_bytes(addr.octets()), |
| } |
| } |
| |
| <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>from_in_addr(in_addr: in_addr) -> Ipv4Addr { |
| Ipv4Addr::from(in_addr.s_addr.to_ne_bytes()) |
| } |
| |
| <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>to_in6_addr(addr: <span class="kw-2">&</span>Ipv6Addr) -> in6_addr { |
| in6_addr { |
| s6_addr: addr.octets(), |
| } |
| } |
| |
| <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>from_in6_addr(addr: in6_addr) -> Ipv6Addr { |
| Ipv6Addr::from(addr.s6_addr) |
| } |
| |
| <span class="attribute">#[cfg(not(any( |
| target_os = <span class="string">"haiku"</span>, |
| target_os = <span class="string">"illumos"</span>, |
| target_os = <span class="string">"netbsd"</span>, |
| target_os = <span class="string">"openbsd"</span>, |
| target_os = <span class="string">"redox"</span>, |
| target_os = <span class="string">"solaris"</span>, |
| target_os = <span class="string">"nto"</span>, |
| )))] |
| </span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>to_mreqn( |
| multiaddr: <span class="kw-2">&</span>Ipv4Addr, |
| interface: <span class="kw-2">&</span><span class="kw">crate</span>::socket::InterfaceIndexOrAddress, |
| ) -> libc::ip_mreqn { |
| <span class="kw">match </span>interface { |
| <span class="kw">crate</span>::socket::InterfaceIndexOrAddress::Index(interface) => libc::ip_mreqn { |
| imr_multiaddr: to_in_addr(multiaddr), |
| imr_address: to_in_addr(<span class="kw-2">&</span>Ipv4Addr::UNSPECIFIED), |
| imr_ifindex: <span class="kw-2">*</span>interface <span class="kw">as _</span>, |
| }, |
| <span class="kw">crate</span>::socket::InterfaceIndexOrAddress::Address(interface) => libc::ip_mreqn { |
| imr_multiaddr: to_in_addr(multiaddr), |
| imr_address: to_in_addr(interface), |
| imr_ifindex: <span class="number">0</span>, |
| }, |
| } |
| } |
| |
| <span class="doccomment">/// Unix only API. |
| </span><span class="kw">impl </span><span class="kw">crate</span>::Socket { |
| <span class="doccomment">/// Accept a new incoming connection from this listener. |
| /// |
| /// This function directly corresponds to the `accept4(2)` function. |
| /// |
| /// This function will block the calling thread until a new connection is |
| /// established. When established, the corresponding `Socket` and the remote |
| /// peer's address will be returned. |
| </span><span class="attribute">#[cfg(all( |
| feature = <span class="string">"all"</span>, |
| any( |
| target_os = <span class="string">"android"</span>, |
| target_os = <span class="string">"dragonfly"</span>, |
| target_os = <span class="string">"freebsd"</span>, |
| target_os = <span class="string">"fuchsia"</span>, |
| target_os = <span class="string">"illumos"</span>, |
| target_os = <span class="string">"linux"</span>, |
| target_os = <span class="string">"netbsd"</span>, |
| target_os = <span class="string">"openbsd" |
| </span>) |
| ))] |
| #[cfg_attr( |
| docsrs, |
| doc(cfg(all( |
| feature = <span class="string">"all"</span>, |
| any( |
| target_os = <span class="string">"android"</span>, |
| target_os = <span class="string">"dragonfly"</span>, |
| target_os = <span class="string">"freebsd"</span>, |
| target_os = <span class="string">"fuchsia"</span>, |
| target_os = <span class="string">"illumos"</span>, |
| target_os = <span class="string">"linux"</span>, |
| target_os = <span class="string">"netbsd"</span>, |
| target_os = <span class="string">"openbsd" |
| </span>) |
| ))) |
| )] |
| </span><span class="kw">pub fn </span>accept4(<span class="kw-2">&</span><span class="self">self</span>, flags: c_int) -> io::Result<(<span class="kw">crate</span>::Socket, SockAddr)> { |
| <span class="self">self</span>._accept4(flags) |
| } |
| |
| <span class="attribute">#[cfg(any( |
| target_os = <span class="string">"android"</span>, |
| target_os = <span class="string">"dragonfly"</span>, |
| target_os = <span class="string">"freebsd"</span>, |
| target_os = <span class="string">"fuchsia"</span>, |
| target_os = <span class="string">"illumos"</span>, |
| target_os = <span class="string">"linux"</span>, |
| target_os = <span class="string">"netbsd"</span>, |
| target_os = <span class="string">"openbsd" |
| </span>))] |
| </span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>_accept4(<span class="kw-2">&</span><span class="self">self</span>, flags: c_int) -> io::Result<(<span class="kw">crate</span>::Socket, SockAddr)> { |
| <span class="comment">// Safety: `accept4` initialises the `SockAddr` for us. |
| </span><span class="kw">unsafe </span>{ |
| SockAddr::init(|storage, len| { |
| <span class="macro">syscall!</span>(accept4(<span class="self">self</span>.as_raw(), storage.cast(), len, flags)) |
| .map(<span class="kw">crate</span>::Socket::from_raw) |
| }) |
| } |
| } |
| |
| <span class="doccomment">/// Sets `CLOEXEC` on the socket. |
| /// |
| /// # Notes |
| /// |
| /// On supported platforms you can use [`Type::cloexec`]. |
| </span><span class="attribute">#[cfg(feature = <span class="string">"all"</span>)] |
| #[cfg_attr(docsrs, doc(cfg(all(feature = <span class="string">"all"</span>, unix))))] |
| </span><span class="kw">pub fn </span>set_cloexec(<span class="kw-2">&</span><span class="self">self</span>, close_on_exec: bool) -> io::Result<()> { |
| <span class="self">self</span>._set_cloexec(close_on_exec) |
| } |
| |
| <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>_set_cloexec(<span class="kw-2">&</span><span class="self">self</span>, close_on_exec: bool) -> io::Result<()> { |
| <span class="kw">if </span>close_on_exec { |
| fcntl_add( |
| <span class="self">self</span>.as_raw(), |
| libc::F_GETFD, |
| libc::F_SETFD, |
| libc::FD_CLOEXEC, |
| ) |
| } <span class="kw">else </span>{ |
| fcntl_remove( |
| <span class="self">self</span>.as_raw(), |
| libc::F_GETFD, |
| libc::F_SETFD, |
| libc::FD_CLOEXEC, |
| ) |
| } |
| } |
| |
| <span class="doccomment">/// Sets `SO_NOSIGPIPE` on the socket. |
| </span><span class="attribute">#[cfg(all(feature = <span class="string">"all"</span>, any(doc, target_vendor = <span class="string">"apple"</span>)))] |
| #[cfg_attr(docsrs, doc(cfg(all(feature = <span class="string">"all"</span>, target_vendor = <span class="string">"apple"</span>))))] |
| </span><span class="kw">pub fn </span>set_nosigpipe(<span class="kw-2">&</span><span class="self">self</span>, nosigpipe: bool) -> io::Result<()> { |
| <span class="self">self</span>._set_nosigpipe(nosigpipe) |
| } |
| |
| <span class="attribute">#[cfg(target_vendor = <span class="string">"apple"</span>)] |
| </span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>_set_nosigpipe(<span class="kw-2">&</span><span class="self">self</span>, nosigpipe: bool) -> io::Result<()> { |
| <span class="kw">unsafe </span>{ |
| setsockopt( |
| <span class="self">self</span>.as_raw(), |
| libc::SOL_SOCKET, |
| libc::SO_NOSIGPIPE, |
| nosigpipe <span class="kw">as </span>c_int, |
| ) |
| } |
| } |
| |
| <span class="doccomment">/// Gets the value of the `TCP_MAXSEG` option on this socket. |
| /// |
| /// For more information about this option, see [`set_mss`]. |
| /// |
| /// [`set_mss`]: crate::Socket::set_mss |
| </span><span class="attribute">#[cfg(all(feature = <span class="string">"all"</span>, not(target_os = <span class="string">"redox"</span>)))] |
| #[cfg_attr(docsrs, doc(cfg(all(feature = <span class="string">"all"</span>, unix, not(target_os = <span class="string">"redox"</span>)))))] |
| </span><span class="kw">pub fn </span>mss(<span class="kw-2">&</span><span class="self">self</span>) -> io::Result<u32> { |
| <span class="kw">unsafe </span>{ |
| getsockopt::<c_int>(<span class="self">self</span>.as_raw(), libc::IPPROTO_TCP, libc::TCP_MAXSEG) |
| .map(|mss| mss <span class="kw">as </span>u32) |
| } |
| } |
| |
| <span class="doccomment">/// Sets the value of the `TCP_MAXSEG` option on this socket. |
| /// |
| /// The `TCP_MAXSEG` option denotes the TCP Maximum Segment Size and is only |
| /// available on TCP sockets. |
| </span><span class="attribute">#[cfg(all(feature = <span class="string">"all"</span>, not(target_os = <span class="string">"redox"</span>)))] |
| #[cfg_attr(docsrs, doc(cfg(all(feature = <span class="string">"all"</span>, unix, not(target_os = <span class="string">"redox"</span>)))))] |
| </span><span class="kw">pub fn </span>set_mss(<span class="kw-2">&</span><span class="self">self</span>, mss: u32) -> io::Result<()> { |
| <span class="kw">unsafe </span>{ |
| setsockopt( |
| <span class="self">self</span>.as_raw(), |
| libc::IPPROTO_TCP, |
| libc::TCP_MAXSEG, |
| mss <span class="kw">as </span>c_int, |
| ) |
| } |
| } |
| |
| <span class="doccomment">/// Returns `true` if `listen(2)` was called on this socket by checking the |
| /// `SO_ACCEPTCONN` option on this socket. |
| </span><span class="attribute">#[cfg(all( |
| feature = <span class="string">"all"</span>, |
| any( |
| target_os = <span class="string">"android"</span>, |
| target_os = <span class="string">"freebsd"</span>, |
| target_os = <span class="string">"fuchsia"</span>, |
| target_os = <span class="string">"linux"</span>, |
| ) |
| ))] |
| #[cfg_attr( |
| docsrs, |
| doc(cfg(all( |
| feature = <span class="string">"all"</span>, |
| any( |
| target_os = <span class="string">"android"</span>, |
| target_os = <span class="string">"freebsd"</span>, |
| target_os = <span class="string">"fuchsia"</span>, |
| target_os = <span class="string">"linux"</span>, |
| ) |
| ))) |
| )] |
| </span><span class="kw">pub fn </span>is_listener(<span class="kw-2">&</span><span class="self">self</span>) -> io::Result<bool> { |
| <span class="kw">unsafe </span>{ |
| getsockopt::<c_int>(<span class="self">self</span>.as_raw(), libc::SOL_SOCKET, libc::SO_ACCEPTCONN) |
| .map(|v| v != <span class="number">0</span>) |
| } |
| } |
| |
| <span class="doccomment">/// Returns the [`Domain`] of this socket by checking the `SO_DOMAIN` option |
| /// on this socket. |
| </span><span class="attribute">#[cfg(all( |
| feature = <span class="string">"all"</span>, |
| any( |
| target_os = <span class="string">"android"</span>, |
| <span class="comment">// TODO: add FreeBSD. |
| // target_os = "freebsd", |
| </span>target_os = <span class="string">"fuchsia"</span>, |
| target_os = <span class="string">"linux"</span>, |
| ) |
| ))] |
| #[cfg_attr(docsrs, doc(cfg(all( |
| feature = <span class="string">"all"</span>, |
| any( |
| target_os = <span class="string">"android"</span>, |
| <span class="comment">// TODO: add FreeBSD. |
| // target_os = "freebsd", |
| </span>target_os = <span class="string">"fuchsia"</span>, |
| target_os = <span class="string">"linux"</span>, |
| ) |
| ))))] |
| </span><span class="kw">pub fn </span>domain(<span class="kw-2">&</span><span class="self">self</span>) -> io::Result<Domain> { |
| <span class="kw">unsafe </span>{ getsockopt::<c_int>(<span class="self">self</span>.as_raw(), libc::SOL_SOCKET, libc::SO_DOMAIN).map(Domain) } |
| } |
| |
| <span class="doccomment">/// Returns the [`Protocol`] of this socket by checking the `SO_PROTOCOL` |
| /// option on this socket. |
| </span><span class="attribute">#[cfg(all( |
| feature = <span class="string">"all"</span>, |
| any( |
| target_os = <span class="string">"android"</span>, |
| target_os = <span class="string">"freebsd"</span>, |
| target_os = <span class="string">"fuchsia"</span>, |
| target_os = <span class="string">"linux"</span>, |
| ) |
| ))] |
| #[cfg_attr( |
| docsrs, |
| doc(cfg(all( |
| feature = <span class="string">"all"</span>, |
| any( |
| target_os = <span class="string">"android"</span>, |
| target_os = <span class="string">"freebsd"</span>, |
| target_os = <span class="string">"fuchsia"</span>, |
| target_os = <span class="string">"linux"</span>, |
| ) |
| ))) |
| )] |
| </span><span class="kw">pub fn </span>protocol(<span class="kw-2">&</span><span class="self">self</span>) -> io::Result<<span class="prelude-ty">Option</span><Protocol>> { |
| <span class="kw">unsafe </span>{ |
| getsockopt::<c_int>(<span class="self">self</span>.as_raw(), libc::SOL_SOCKET, libc::SO_PROTOCOL).map(|v| <span class="kw">match </span>v |
| { |
| <span class="number">0 </span>=> <span class="prelude-val">None</span>, |
| p => <span class="prelude-val">Some</span>(Protocol(p)), |
| }) |
| } |
| } |
| |
| <span class="doccomment">/// Gets the value for the `SO_MARK` option on this socket. |
| /// |
| /// This value gets the socket mark field for each packet sent through |
| /// this socket. |
| /// |
| /// On Linux this function requires the `CAP_NET_ADMIN` capability. |
| </span><span class="attribute">#[cfg(all( |
| feature = <span class="string">"all"</span>, |
| any(target_os = <span class="string">"android"</span>, target_os = <span class="string">"fuchsia"</span>, target_os = <span class="string">"linux"</span>) |
| ))] |
| #[cfg_attr( |
| docsrs, |
| doc(cfg(all( |
| feature = <span class="string">"all"</span>, |
| any(target_os = <span class="string">"android"</span>, target_os = <span class="string">"fuchsia"</span>, target_os = <span class="string">"linux"</span>) |
| ))) |
| )] |
| </span><span class="kw">pub fn </span>mark(<span class="kw-2">&</span><span class="self">self</span>) -> io::Result<u32> { |
| <span class="kw">unsafe </span>{ |
| getsockopt::<c_int>(<span class="self">self</span>.as_raw(), libc::SOL_SOCKET, libc::SO_MARK) |
| .map(|mark| mark <span class="kw">as </span>u32) |
| } |
| } |
| |
| <span class="doccomment">/// Sets the value for the `SO_MARK` option on this socket. |
| /// |
| /// This value sets the socket mark field for each packet sent through |
| /// this socket. Changing the mark can be used for mark-based routing |
| /// without netfilter or for packet filtering. |
| /// |
| /// On Linux this function requires the `CAP_NET_ADMIN` capability. |
| </span><span class="attribute">#[cfg(all( |
| feature = <span class="string">"all"</span>, |
| any(target_os = <span class="string">"android"</span>, target_os = <span class="string">"fuchsia"</span>, target_os = <span class="string">"linux"</span>) |
| ))] |
| #[cfg_attr( |
| docsrs, |
| doc(cfg(all( |
| feature = <span class="string">"all"</span>, |
| any(target_os = <span class="string">"android"</span>, target_os = <span class="string">"fuchsia"</span>, target_os = <span class="string">"linux"</span>) |
| ))) |
| )] |
| </span><span class="kw">pub fn </span>set_mark(<span class="kw-2">&</span><span class="self">self</span>, mark: u32) -> io::Result<()> { |
| <span class="kw">unsafe </span>{ |
| setsockopt::<c_int>( |
| <span class="self">self</span>.as_raw(), |
| libc::SOL_SOCKET, |
| libc::SO_MARK, |
| mark <span class="kw">as </span>c_int, |
| ) |
| } |
| } |
| |
| <span class="doccomment">/// Get the value of the `TCP_CORK` option on this socket. |
| /// |
| /// For more information about this option, see [`set_cork`]. |
| /// |
| /// [`set_cork`]: Socket::set_cork |
| </span><span class="attribute">#[cfg(all( |
| feature = <span class="string">"all"</span>, |
| any(target_os = <span class="string">"android"</span>, target_os = <span class="string">"fuchsia"</span>, target_os = <span class="string">"linux"</span>) |
| ))] |
| #[cfg_attr( |
| docsrs, |
| doc(cfg(all( |
| feature = <span class="string">"all"</span>, |
| any(target_os = <span class="string">"android"</span>, target_os = <span class="string">"fuchsia"</span>, target_os = <span class="string">"linux"</span>) |
| ))) |
| )] |
| </span><span class="kw">pub fn </span>cork(<span class="kw-2">&</span><span class="self">self</span>) -> io::Result<bool> { |
| <span class="kw">unsafe </span>{ |
| getsockopt::<Bool>(<span class="self">self</span>.as_raw(), libc::IPPROTO_TCP, libc::TCP_CORK) |
| .map(|cork| cork != <span class="number">0</span>) |
| } |
| } |
| |
| <span class="doccomment">/// Set the value of the `TCP_CORK` option on this socket. |
| /// |
| /// If set, don't send out partial frames. All queued partial frames are |
| /// sent when the option is cleared again. There is a 200 millisecond ceiling on |
| /// the time for which output is corked by `TCP_CORK`. If this ceiling is reached, |
| /// then queued data is automatically transmitted. |
| </span><span class="attribute">#[cfg(all( |
| feature = <span class="string">"all"</span>, |
| any(target_os = <span class="string">"android"</span>, target_os = <span class="string">"fuchsia"</span>, target_os = <span class="string">"linux"</span>) |
| ))] |
| #[cfg_attr( |
| docsrs, |
| doc(cfg(all( |
| feature = <span class="string">"all"</span>, |
| any(target_os = <span class="string">"android"</span>, target_os = <span class="string">"fuchsia"</span>, target_os = <span class="string">"linux"</span>) |
| ))) |
| )] |
| </span><span class="kw">pub fn </span>set_cork(<span class="kw-2">&</span><span class="self">self</span>, cork: bool) -> io::Result<()> { |
| <span class="kw">unsafe </span>{ |
| setsockopt( |
| <span class="self">self</span>.as_raw(), |
| libc::IPPROTO_TCP, |
| libc::TCP_CORK, |
| cork <span class="kw">as </span>c_int, |
| ) |
| } |
| } |
| |
| <span class="doccomment">/// Get the value of the `TCP_QUICKACK` option on this socket. |
| /// |
| /// For more information about this option, see [`set_quickack`]. |
| /// |
| /// [`set_quickack`]: Socket::set_quickack |
| </span><span class="attribute">#[cfg(all( |
| feature = <span class="string">"all"</span>, |
| any(target_os = <span class="string">"android"</span>, target_os = <span class="string">"fuchsia"</span>, target_os = <span class="string">"linux"</span>) |
| ))] |
| #[cfg_attr( |
| docsrs, |
| doc(cfg(all( |
| feature = <span class="string">"all"</span>, |
| any(target_os = <span class="string">"android"</span>, target_os = <span class="string">"fuchsia"</span>, target_os = <span class="string">"linux"</span>) |
| ))) |
| )] |
| </span><span class="kw">pub fn </span>quickack(<span class="kw-2">&</span><span class="self">self</span>) -> io::Result<bool> { |
| <span class="kw">unsafe </span>{ |
| getsockopt::<Bool>(<span class="self">self</span>.as_raw(), libc::IPPROTO_TCP, libc::TCP_QUICKACK) |
| .map(|quickack| quickack != <span class="number">0</span>) |
| } |
| } |
| |
| <span class="doccomment">/// Set the value of the `TCP_QUICKACK` option on this socket. |
| /// |
| /// If set, acks are sent immediately, rather than delayed if needed in accordance to normal |
| /// TCP operation. This flag is not permanent, it only enables a switch to or from quickack mode. |
| /// Subsequent operation of the TCP protocol will once again enter/leave quickack mode depending on |
| /// internal protocol processing and factors such as delayed ack timeouts occurring and data transfer. |
| </span><span class="attribute">#[cfg(all( |
| feature = <span class="string">"all"</span>, |
| any(target_os = <span class="string">"android"</span>, target_os = <span class="string">"fuchsia"</span>, target_os = <span class="string">"linux"</span>) |
| ))] |
| #[cfg_attr( |
| docsrs, |
| doc(cfg(all( |
| feature = <span class="string">"all"</span>, |
| any(target_os = <span class="string">"android"</span>, target_os = <span class="string">"fuchsia"</span>, target_os = <span class="string">"linux"</span>) |
| ))) |
| )] |
| </span><span class="kw">pub fn </span>set_quickack(<span class="kw-2">&</span><span class="self">self</span>, quickack: bool) -> io::Result<()> { |
| <span class="kw">unsafe </span>{ |
| setsockopt( |
| <span class="self">self</span>.as_raw(), |
| libc::IPPROTO_TCP, |
| libc::TCP_QUICKACK, |
| quickack <span class="kw">as </span>c_int, |
| ) |
| } |
| } |
| |
| <span class="doccomment">/// Get the value of the `TCP_THIN_LINEAR_TIMEOUTS` option on this socket. |
| /// |
| /// For more information about this option, see [`set_thin_linear_timeouts`]. |
| /// |
| /// [`set_thin_linear_timeouts`]: Socket::set_thin_linear_timeouts |
| </span><span class="attribute">#[cfg(all( |
| feature = <span class="string">"all"</span>, |
| any(target_os = <span class="string">"android"</span>, target_os = <span class="string">"fuchsia"</span>, target_os = <span class="string">"linux"</span>) |
| ))] |
| #[cfg_attr( |
| docsrs, |
| doc(cfg(all( |
| feature = <span class="string">"all"</span>, |
| any(target_os = <span class="string">"android"</span>, target_os = <span class="string">"fuchsia"</span>, target_os = <span class="string">"linux"</span>) |
| ))) |
| )] |
| </span><span class="kw">pub fn </span>thin_linear_timeouts(<span class="kw-2">&</span><span class="self">self</span>) -> io::Result<bool> { |
| <span class="kw">unsafe </span>{ |
| getsockopt::<Bool>( |
| <span class="self">self</span>.as_raw(), |
| libc::IPPROTO_TCP, |
| libc::TCP_THIN_LINEAR_TIMEOUTS, |
| ) |
| .map(|timeouts| timeouts != <span class="number">0</span>) |
| } |
| } |
| |
| <span class="doccomment">/// Set the value of the `TCP_THIN_LINEAR_TIMEOUTS` option on this socket. |
| /// |
| /// If set, the kernel will dynamically detect a thin-stream connection if there are less than four packets in flight. |
| /// With less than four packets in flight the normal TCP fast retransmission will not be effective. |
| /// The kernel will modify the retransmission to avoid the very high latencies that thin stream suffer because of exponential backoff. |
| </span><span class="attribute">#[cfg(all( |
| feature = <span class="string">"all"</span>, |
| any(target_os = <span class="string">"android"</span>, target_os = <span class="string">"fuchsia"</span>, target_os = <span class="string">"linux"</span>) |
| ))] |
| #[cfg_attr( |
| docsrs, |
| doc(cfg(all( |
| feature = <span class="string">"all"</span>, |
| any(target_os = <span class="string">"android"</span>, target_os = <span class="string">"fuchsia"</span>, target_os = <span class="string">"linux"</span>) |
| ))) |
| )] |
| </span><span class="kw">pub fn </span>set_thin_linear_timeouts(<span class="kw-2">&</span><span class="self">self</span>, timeouts: bool) -> io::Result<()> { |
| <span class="kw">unsafe </span>{ |
| setsockopt( |
| <span class="self">self</span>.as_raw(), |
| libc::IPPROTO_TCP, |
| libc::TCP_THIN_LINEAR_TIMEOUTS, |
| timeouts <span class="kw">as </span>c_int, |
| ) |
| } |
| } |
| |
| <span class="doccomment">/// Gets the value for the `SO_BINDTODEVICE` option on this socket. |
| /// |
| /// This value gets the socket binded device's interface name. |
| </span><span class="attribute">#[cfg(all( |
| feature = <span class="string">"all"</span>, |
| any(target_os = <span class="string">"android"</span>, target_os = <span class="string">"fuchsia"</span>, target_os = <span class="string">"linux"</span>) |
| ))] |
| #[cfg_attr( |
| docsrs, |
| doc(cfg(all( |
| feature = <span class="string">"all"</span>, |
| any(target_os = <span class="string">"android"</span>, target_os = <span class="string">"fuchsia"</span>, target_os = <span class="string">"linux"</span>) |
| ))) |
| )] |
| </span><span class="kw">pub fn </span>device(<span class="kw-2">&</span><span class="self">self</span>) -> io::Result<<span class="prelude-ty">Option</span><Vec<u8>>> { |
| <span class="comment">// TODO: replace with `MaybeUninit::uninit_array` once stable. |
| </span><span class="kw">let </span><span class="kw-2">mut </span>buf: [MaybeUninit<u8>; libc::IFNAMSIZ] = |
| <span class="kw">unsafe </span>{ MaybeUninit::uninit().assume_init() }; |
| <span class="kw">let </span><span class="kw-2">mut </span>len = buf.len() <span class="kw">as </span>libc::socklen_t; |
| <span class="macro">syscall!</span>(getsockopt( |
| <span class="self">self</span>.as_raw(), |
| libc::SOL_SOCKET, |
| libc::SO_BINDTODEVICE, |
| buf.as_mut_ptr().cast(), |
| <span class="kw-2">&mut </span>len, |
| ))<span class="question-mark">?</span>; |
| <span class="kw">if </span>len == <span class="number">0 </span>{ |
| <span class="prelude-val">Ok</span>(<span class="prelude-val">None</span>) |
| } <span class="kw">else </span>{ |
| <span class="kw">let </span>buf = <span class="kw-2">&</span>buf[..len <span class="kw">as </span>usize - <span class="number">1</span>]; |
| <span class="comment">// TODO: use `MaybeUninit::slice_assume_init_ref` once stable. |
| </span><span class="prelude-val">Ok</span>(<span class="prelude-val">Some</span>(<span class="kw">unsafe </span>{ <span class="kw-2">&*</span>(buf <span class="kw">as </span><span class="kw-2">*const </span>[<span class="kw">_</span>] <span class="kw">as </span><span class="kw-2">*const </span>[u8]) }.into())) |
| } |
| } |
| |
| <span class="doccomment">/// Sets the value for the `SO_BINDTODEVICE` option on this socket. |
| /// |
| /// If a socket is bound to an interface, only packets received from that |
| /// particular interface are processed by the socket. Note that this only |
| /// works for some socket types, particularly `AF_INET` sockets. |
| /// |
| /// If `interface` is `None` or an empty string it removes the binding. |
| </span><span class="attribute">#[cfg(all( |
| feature = <span class="string">"all"</span>, |
| any(target_os = <span class="string">"android"</span>, target_os = <span class="string">"fuchsia"</span>, target_os = <span class="string">"linux"</span>) |
| ))] |
| #[cfg_attr( |
| docsrs, |
| doc(cfg(all( |
| feature = <span class="string">"all"</span>, |
| any(target_os = <span class="string">"android"</span>, target_os = <span class="string">"fuchsia"</span>, target_os = <span class="string">"linux"</span>) |
| ))) |
| )] |
| </span><span class="kw">pub fn </span>bind_device(<span class="kw-2">&</span><span class="self">self</span>, interface: <span class="prelude-ty">Option</span><<span class="kw-2">&</span>[u8]>) -> io::Result<()> { |
| <span class="kw">let </span>(value, len) = <span class="kw">if let </span><span class="prelude-val">Some</span>(interface) = interface { |
| (interface.as_ptr(), interface.len()) |
| } <span class="kw">else </span>{ |
| (ptr::null(), <span class="number">0</span>) |
| }; |
| <span class="macro">syscall!</span>(setsockopt( |
| <span class="self">self</span>.as_raw(), |
| libc::SOL_SOCKET, |
| libc::SO_BINDTODEVICE, |
| value.cast(), |
| len <span class="kw">as </span>libc::socklen_t, |
| )) |
| .map(|<span class="kw">_</span>| ()) |
| } |
| |
| <span class="doccomment">/// Sets the value for the `SO_SETFIB` option on this socket. |
| /// |
| /// Bind socket to the specified forwarding table (VRF) on a FreeBSD. |
| </span><span class="attribute">#[cfg(all(feature = <span class="string">"all"</span>, any(target_os = <span class="string">"freebsd"</span>)))] |
| #[cfg_attr(docsrs, doc(cfg(all(feature = <span class="string">"all"</span>, any(target_os = <span class="string">"freebsd"</span>)))))] |
| </span><span class="kw">pub fn </span>set_fib(<span class="kw-2">&</span><span class="self">self</span>, fib: u32) -> io::Result<()> { |
| <span class="macro">syscall!</span>(setsockopt( |
| <span class="self">self</span>.as_raw(), |
| libc::SOL_SOCKET, |
| libc::SO_SETFIB, |
| (<span class="kw-2">&</span>fib <span class="kw">as </span><span class="kw-2">*const </span>u32).cast(), |
| mem::size_of::<u32>() <span class="kw">as </span>libc::socklen_t, |
| )) |
| .map(|<span class="kw">_</span>| ()) |
| } |
| |
| <span class="doccomment">/// Sets the value for `IP_BOUND_IF` option on this socket. |
| /// |
| /// If a socket is bound to an interface, only packets received from that |
| /// particular interface are processed by the socket. |
| /// |
| /// If `interface` is `None`, the binding is removed. If the `interface` |
| /// index is not valid, an error is returned. |
| /// |
| /// One can use `libc::if_nametoindex` to convert an interface alias to an |
| /// index. |
| </span><span class="attribute">#[cfg(all(feature = <span class="string">"all"</span>, target_vendor = <span class="string">"apple"</span>))] |
| #[cfg_attr(docsrs, doc(cfg(all(feature = <span class="string">"all"</span>, target_vendor = <span class="string">"apple"</span>))))] |
| </span><span class="kw">pub fn </span>bind_device_by_index(<span class="kw-2">&</span><span class="self">self</span>, interface: <span class="prelude-ty">Option</span><NonZeroU32>) -> io::Result<()> { |
| <span class="kw">let </span>index = interface.map(NonZeroU32::get).unwrap_or(<span class="number">0</span>); |
| <span class="kw">unsafe </span>{ setsockopt(<span class="self">self</span>.as_raw(), IPPROTO_IP, libc::IP_BOUND_IF, index) } |
| } |
| |
| <span class="doccomment">/// Gets the value for `IP_BOUND_IF` option on this socket, i.e. the index |
| /// for the interface to which the socket is bound. |
| /// |
| /// Returns `None` if the socket is not bound to any interface, otherwise |
| /// returns an interface index. |
| </span><span class="attribute">#[cfg(all(feature = <span class="string">"all"</span>, target_vendor = <span class="string">"apple"</span>))] |
| #[cfg_attr(docsrs, doc(cfg(all(feature = <span class="string">"all"</span>, target_vendor = <span class="string">"apple"</span>))))] |
| </span><span class="kw">pub fn </span>device_index(<span class="kw-2">&</span><span class="self">self</span>) -> io::Result<<span class="prelude-ty">Option</span><NonZeroU32>> { |
| <span class="kw">let </span>index = |
| <span class="kw">unsafe </span>{ getsockopt::<libc::c_uint>(<span class="self">self</span>.as_raw(), IPPROTO_IP, libc::IP_BOUND_IF)<span class="question-mark">? </span>}; |
| <span class="prelude-val">Ok</span>(NonZeroU32::new(index)) |
| } |
| |
| <span class="doccomment">/// Get the value of the `SO_INCOMING_CPU` option on this socket. |
| /// |
| /// For more information about this option, see [`set_cpu_affinity`]. |
| /// |
| /// [`set_cpu_affinity`]: crate::Socket::set_cpu_affinity |
| </span><span class="attribute">#[cfg(all(feature = <span class="string">"all"</span>, target_os = <span class="string">"linux"</span>))] |
| #[cfg_attr(docsrs, doc(cfg(all(feature = <span class="string">"all"</span>, target_os = <span class="string">"linux"</span>))))] |
| </span><span class="kw">pub fn </span>cpu_affinity(<span class="kw-2">&</span><span class="self">self</span>) -> io::Result<usize> { |
| <span class="kw">unsafe </span>{ |
| getsockopt::<c_int>(<span class="self">self</span>.as_raw(), libc::SOL_SOCKET, libc::SO_INCOMING_CPU) |
| .map(|cpu| cpu <span class="kw">as </span>usize) |
| } |
| } |
| |
| <span class="doccomment">/// Set value for the `SO_INCOMING_CPU` option on this socket. |
| /// |
| /// Sets the CPU affinity of the socket. |
| </span><span class="attribute">#[cfg(all(feature = <span class="string">"all"</span>, target_os = <span class="string">"linux"</span>))] |
| #[cfg_attr(docsrs, doc(cfg(all(feature = <span class="string">"all"</span>, target_os = <span class="string">"linux"</span>))))] |
| </span><span class="kw">pub fn </span>set_cpu_affinity(<span class="kw-2">&</span><span class="self">self</span>, cpu: usize) -> io::Result<()> { |
| <span class="kw">unsafe </span>{ |
| setsockopt( |
| <span class="self">self</span>.as_raw(), |
| libc::SOL_SOCKET, |
| libc::SO_INCOMING_CPU, |
| cpu <span class="kw">as </span>c_int, |
| ) |
| } |
| } |
| |
| <span class="doccomment">/// Get the value of the `SO_REUSEPORT` option on this socket. |
| /// |
| /// For more information about this option, see [`set_reuse_port`]. |
| /// |
| /// [`set_reuse_port`]: crate::Socket::set_reuse_port |
| </span><span class="attribute">#[cfg(all( |
| feature = <span class="string">"all"</span>, |
| not(any(target_os = <span class="string">"solaris"</span>, target_os = <span class="string">"illumos"</span>)) |
| ))] |
| #[cfg_attr( |
| docsrs, |
| doc(cfg(all( |
| feature = <span class="string">"all"</span>, |
| unix, |
| not(any(target_os = <span class="string">"solaris"</span>, target_os = <span class="string">"illumos"</span>)) |
| ))) |
| )] |
| </span><span class="kw">pub fn </span>reuse_port(<span class="kw-2">&</span><span class="self">self</span>) -> io::Result<bool> { |
| <span class="kw">unsafe </span>{ |
| getsockopt::<c_int>(<span class="self">self</span>.as_raw(), libc::SOL_SOCKET, libc::SO_REUSEPORT) |
| .map(|reuse| reuse != <span class="number">0</span>) |
| } |
| } |
| |
| <span class="doccomment">/// Set value for the `SO_REUSEPORT` option on this socket. |
| /// |
| /// This indicates that further calls to `bind` may allow reuse of local |
| /// addresses. For IPv4 sockets this means that a socket may bind even when |
| /// there's a socket already listening on this port. |
| </span><span class="attribute">#[cfg(all( |
| feature = <span class="string">"all"</span>, |
| not(any(target_os = <span class="string">"solaris"</span>, target_os = <span class="string">"illumos"</span>)) |
| ))] |
| #[cfg_attr( |
| docsrs, |
| doc(cfg(all( |
| feature = <span class="string">"all"</span>, |
| unix, |
| not(any(target_os = <span class="string">"solaris"</span>, target_os = <span class="string">"illumos"</span>)) |
| ))) |
| )] |
| </span><span class="kw">pub fn </span>set_reuse_port(<span class="kw-2">&</span><span class="self">self</span>, reuse: bool) -> io::Result<()> { |
| <span class="kw">unsafe </span>{ |
| setsockopt( |
| <span class="self">self</span>.as_raw(), |
| libc::SOL_SOCKET, |
| libc::SO_REUSEPORT, |
| reuse <span class="kw">as </span>c_int, |
| ) |
| } |
| } |
| |
| <span class="doccomment">/// Get the value of the `IP_FREEBIND` option on this socket. |
| /// |
| /// For more information about this option, see [`set_freebind`]. |
| /// |
| /// [`set_freebind`]: crate::Socket::set_freebind |
| </span><span class="attribute">#[cfg(all( |
| feature = <span class="string">"all"</span>, |
| any(target_os = <span class="string">"android"</span>, target_os = <span class="string">"fuchsia"</span>, target_os = <span class="string">"linux"</span>) |
| ))] |
| #[cfg_attr( |
| docsrs, |
| doc(cfg(all( |
| feature = <span class="string">"all"</span>, |
| any(target_os = <span class="string">"android"</span>, target_os = <span class="string">"fuchsia"</span>, target_os = <span class="string">"linux"</span>) |
| ))) |
| )] |
| </span><span class="kw">pub fn </span>freebind(<span class="kw-2">&</span><span class="self">self</span>) -> io::Result<bool> { |
| <span class="kw">unsafe </span>{ |
| getsockopt::<c_int>(<span class="self">self</span>.as_raw(), libc::SOL_IP, libc::IP_FREEBIND) |
| .map(|freebind| freebind != <span class="number">0</span>) |
| } |
| } |
| |
| <span class="doccomment">/// Set value for the `IP_FREEBIND` option on this socket. |
| /// |
| /// If enabled, this boolean option allows binding to an IP address that is |
| /// nonlocal or does not (yet) exist. This permits listening on a socket, |
| /// without requiring the underlying network interface or the specified |
| /// dynamic IP address to be up at the time that the application is trying |
| /// to bind to it. |
| </span><span class="attribute">#[cfg(all( |
| feature = <span class="string">"all"</span>, |
| any(target_os = <span class="string">"android"</span>, target_os = <span class="string">"fuchsia"</span>, target_os = <span class="string">"linux"</span>) |
| ))] |
| #[cfg_attr( |
| docsrs, |
| doc(cfg(all( |
| feature = <span class="string">"all"</span>, |
| any(target_os = <span class="string">"android"</span>, target_os = <span class="string">"fuchsia"</span>, target_os = <span class="string">"linux"</span>) |
| ))) |
| )] |
| </span><span class="kw">pub fn </span>set_freebind(<span class="kw-2">&</span><span class="self">self</span>, freebind: bool) -> io::Result<()> { |
| <span class="kw">unsafe </span>{ |
| setsockopt( |
| <span class="self">self</span>.as_raw(), |
| libc::SOL_IP, |
| libc::IP_FREEBIND, |
| freebind <span class="kw">as </span>c_int, |
| ) |
| } |
| } |
| |
| <span class="doccomment">/// Get the value of the `IPV6_FREEBIND` option on this socket. |
| /// |
| /// This is an IPv6 counterpart of `IP_FREEBIND` socket option on |
| /// Android/Linux. For more information about this option, see |
| /// [`set_freebind`]. |
| /// |
| /// [`set_freebind`]: crate::Socket::set_freebind |
| </span><span class="attribute">#[cfg(all(feature = <span class="string">"all"</span>, any(target_os = <span class="string">"android"</span>, target_os = <span class="string">"linux"</span>)))] |
| #[cfg_attr( |
| docsrs, |
| doc(cfg(all(feature = <span class="string">"all"</span>, any(target_os = <span class="string">"android"</span>, target_os = <span class="string">"linux"</span>)))) |
| )] |
| </span><span class="kw">pub fn </span>freebind_ipv6(<span class="kw-2">&</span><span class="self">self</span>) -> io::Result<bool> { |
| <span class="kw">unsafe </span>{ |
| getsockopt::<c_int>(<span class="self">self</span>.as_raw(), libc::SOL_IPV6, libc::IPV6_FREEBIND) |
| .map(|freebind| freebind != <span class="number">0</span>) |
| } |
| } |
| |
| <span class="doccomment">/// Set value for the `IPV6_FREEBIND` option on this socket. |
| /// |
| /// This is an IPv6 counterpart of `IP_FREEBIND` socket option on |
| /// Android/Linux. For more information about this option, see |
| /// [`set_freebind`]. |
| /// |
| /// [`set_freebind`]: crate::Socket::set_freebind |
| /// |
| /// # Examples |
| /// |
| /// On Linux: |
| /// |
| /// ``` |
| /// use socket2::{Domain, Socket, Type}; |
| /// use std::io::{self, Error, ErrorKind}; |
| /// |
| /// fn enable_freebind(socket: &Socket) -> io::Result<()> { |
| /// match socket.domain()? { |
| /// Domain::IPV4 => socket.set_freebind(true)?, |
| /// Domain::IPV6 => socket.set_freebind_ipv6(true)?, |
| /// _ => return Err(Error::new(ErrorKind::Other, "unsupported domain")), |
| /// }; |
| /// Ok(()) |
| /// } |
| /// |
| /// # fn main() -> io::Result<()> { |
| /// # let socket = Socket::new(Domain::IPV6, Type::STREAM, None)?; |
| /// # enable_freebind(&socket) |
| /// # } |
| /// ``` |
| </span><span class="attribute">#[cfg(all(feature = <span class="string">"all"</span>, any(target_os = <span class="string">"android"</span>, target_os = <span class="string">"linux"</span>)))] |
| #[cfg_attr( |
| docsrs, |
| doc(cfg(all(feature = <span class="string">"all"</span>, any(target_os = <span class="string">"android"</span>, target_os = <span class="string">"linux"</span>)))) |
| )] |
| </span><span class="kw">pub fn </span>set_freebind_ipv6(<span class="kw-2">&</span><span class="self">self</span>, freebind: bool) -> io::Result<()> { |
| <span class="kw">unsafe </span>{ |
| setsockopt( |
| <span class="self">self</span>.as_raw(), |
| libc::SOL_IPV6, |
| libc::IPV6_FREEBIND, |
| freebind <span class="kw">as </span>c_int, |
| ) |
| } |
| } |
| |
| <span class="doccomment">/// Copies data between a `file` and this socket using the `sendfile(2)` |
| /// system call. Because this copying is done within the kernel, |
| /// `sendfile()` is more efficient than the combination of `read(2)` and |
| /// `write(2)`, which would require transferring data to and from user |
| /// space. |
| /// |
| /// Different OSs support different kinds of `file`s, see the OS |
| /// documentation for what kind of files are supported. Generally *regular* |
| /// files are supported by all OSs. |
| /// |
| /// The `offset` is the absolute offset into the `file` to use as starting |
| /// point. |
| /// |
| /// Depending on the OS this function *may* change the offset of `file`. For |
| /// the best results reset the offset of the file before using it again. |
| /// |
| /// The `length` determines how many bytes to send, where a length of `None` |
| /// means it will try to send all bytes. |
| </span><span class="attribute">#[cfg(all( |
| feature = <span class="string">"all"</span>, |
| any( |
| target_os = <span class="string">"android"</span>, |
| target_os = <span class="string">"freebsd"</span>, |
| target_os = <span class="string">"linux"</span>, |
| target_vendor = <span class="string">"apple"</span>, |
| ) |
| ))] |
| #[cfg_attr( |
| docsrs, |
| doc(cfg(all( |
| feature = <span class="string">"all"</span>, |
| any( |
| target_os = <span class="string">"android"</span>, |
| target_os = <span class="string">"freebsd"</span>, |
| target_os = <span class="string">"linux"</span>, |
| target_vendor = <span class="string">"apple"</span>, |
| ) |
| ))) |
| )] |
| </span><span class="kw">pub fn </span>sendfile<F>( |
| <span class="kw-2">&</span><span class="self">self</span>, |
| file: <span class="kw-2">&</span>F, |
| offset: usize, |
| length: <span class="prelude-ty">Option</span><NonZeroUsize>, |
| ) -> io::Result<usize> |
| <span class="kw">where |
| </span>F: AsRawFd, |
| { |
| <span class="self">self</span>._sendfile(file.as_raw_fd(), offset <span class="kw">as _</span>, length) |
| } |
| |
| <span class="attribute">#[cfg(all(feature = <span class="string">"all"</span>, target_vendor = <span class="string">"apple"</span>))] |
| </span><span class="kw">fn </span>_sendfile( |
| <span class="kw-2">&</span><span class="self">self</span>, |
| file: RawFd, |
| offset: libc::off_t, |
| length: <span class="prelude-ty">Option</span><NonZeroUsize>, |
| ) -> io::Result<usize> { |
| <span class="comment">// On macOS `length` is value-result parameter. It determines the number |
| // of bytes to write and returns the number of bytes written. |
| </span><span class="kw">let </span><span class="kw-2">mut </span>length = <span class="kw">match </span>length { |
| <span class="prelude-val">Some</span>(n) => n.get() <span class="kw">as </span>libc::off_t, |
| <span class="comment">// A value of `0` means send all bytes. |
| </span><span class="prelude-val">None </span>=> <span class="number">0</span>, |
| }; |
| <span class="macro">syscall!</span>(sendfile( |
| file, |
| <span class="self">self</span>.as_raw(), |
| offset, |
| <span class="kw-2">&mut </span>length, |
| ptr::null_mut(), |
| <span class="number">0</span>, |
| )) |
| .map(|<span class="kw">_</span>| length <span class="kw">as </span>usize) |
| } |
| |
| <span class="attribute">#[cfg(all(feature = <span class="string">"all"</span>, any(target_os = <span class="string">"android"</span>, target_os = <span class="string">"linux"</span>)))] |
| </span><span class="kw">fn </span>_sendfile( |
| <span class="kw-2">&</span><span class="self">self</span>, |
| file: RawFd, |
| offset: libc::off_t, |
| length: <span class="prelude-ty">Option</span><NonZeroUsize>, |
| ) -> io::Result<usize> { |
| <span class="kw">let </span>count = <span class="kw">match </span>length { |
| <span class="prelude-val">Some</span>(n) => n.get() <span class="kw">as </span>libc::size_t, |
| <span class="comment">// The maximum the Linux kernel will write in a single call. |
| </span><span class="prelude-val">None </span>=> <span class="number">0x7ffff000</span>, <span class="comment">// 2,147,479,552 bytes. |
| </span>}; |
| <span class="kw">let </span><span class="kw-2">mut </span>offset = offset; |
| <span class="macro">syscall!</span>(sendfile(<span class="self">self</span>.as_raw(), file, <span class="kw-2">&mut </span>offset, count)).map(|n| n <span class="kw">as </span>usize) |
| } |
| |
| <span class="attribute">#[cfg(all(feature = <span class="string">"all"</span>, target_os = <span class="string">"freebsd"</span>))] |
| </span><span class="kw">fn </span>_sendfile( |
| <span class="kw-2">&</span><span class="self">self</span>, |
| file: RawFd, |
| offset: libc::off_t, |
| length: <span class="prelude-ty">Option</span><NonZeroUsize>, |
| ) -> io::Result<usize> { |
| <span class="kw">let </span>nbytes = <span class="kw">match </span>length { |
| <span class="prelude-val">Some</span>(n) => n.get() <span class="kw">as </span>libc::size_t, |
| <span class="comment">// A value of `0` means send all bytes. |
| </span><span class="prelude-val">None </span>=> <span class="number">0</span>, |
| }; |
| <span class="kw">let </span><span class="kw-2">mut </span>sbytes: libc::off_t = <span class="number">0</span>; |
| <span class="macro">syscall!</span>(sendfile( |
| file, |
| <span class="self">self</span>.as_raw(), |
| offset, |
| nbytes, |
| ptr::null_mut(), |
| <span class="kw-2">&mut </span>sbytes, |
| <span class="number">0</span>, |
| )) |
| .map(|<span class="kw">_</span>| sbytes <span class="kw">as </span>usize) |
| } |
| |
| <span class="doccomment">/// Set the value of the `TCP_USER_TIMEOUT` option on this socket. |
| /// |
| /// If set, this specifies the maximum amount of time that transmitted data may remain |
| /// unacknowledged or buffered data may remain untransmitted before TCP will forcibly close the |
| /// corresponding connection. |
| /// |
| /// Setting `timeout` to `None` or a zero duration causes the system default timeouts to |
| /// be used. If `timeout` in milliseconds is larger than `c_uint::MAX`, the timeout is clamped |
| /// to `c_uint::MAX`. For example, when `c_uint` is a 32-bit value, this limits the timeout to |
| /// approximately 49.71 days. |
| </span><span class="attribute">#[cfg(all( |
| feature = <span class="string">"all"</span>, |
| any(target_os = <span class="string">"android"</span>, target_os = <span class="string">"fuchsia"</span>, target_os = <span class="string">"linux"</span>) |
| ))] |
| #[cfg_attr( |
| docsrs, |
| doc(cfg(all( |
| feature = <span class="string">"all"</span>, |
| any(target_os = <span class="string">"android"</span>, target_os = <span class="string">"fuchsia"</span>, target_os = <span class="string">"linux"</span>) |
| ))) |
| )] |
| </span><span class="kw">pub fn </span>set_tcp_user_timeout(<span class="kw-2">&</span><span class="self">self</span>, timeout: <span class="prelude-ty">Option</span><Duration>) -> io::Result<()> { |
| <span class="kw">let </span>timeout = timeout |
| .map(|to| min(to.as_millis(), libc::c_uint::MAX <span class="kw">as </span>u128) <span class="kw">as </span>libc::c_uint) |
| .unwrap_or(<span class="number">0</span>); |
| <span class="kw">unsafe </span>{ |
| setsockopt( |
| <span class="self">self</span>.as_raw(), |
| libc::IPPROTO_TCP, |
| libc::TCP_USER_TIMEOUT, |
| timeout, |
| ) |
| } |
| } |
| |
| <span class="doccomment">/// Get the value of the `TCP_USER_TIMEOUT` option on this socket. |
| /// |
| /// For more information about this option, see [`set_tcp_user_timeout`]. |
| /// |
| /// [`set_tcp_user_timeout`]: Socket::set_tcp_user_timeout |
| </span><span class="attribute">#[cfg(all( |
| feature = <span class="string">"all"</span>, |
| any(target_os = <span class="string">"android"</span>, target_os = <span class="string">"fuchsia"</span>, target_os = <span class="string">"linux"</span>) |
| ))] |
| #[cfg_attr( |
| docsrs, |
| doc(cfg(all( |
| feature = <span class="string">"all"</span>, |
| any(target_os = <span class="string">"android"</span>, target_os = <span class="string">"fuchsia"</span>, target_os = <span class="string">"linux"</span>) |
| ))) |
| )] |
| </span><span class="kw">pub fn </span>tcp_user_timeout(<span class="kw-2">&</span><span class="self">self</span>) -> io::Result<<span class="prelude-ty">Option</span><Duration>> { |
| <span class="kw">unsafe </span>{ |
| getsockopt::<libc::c_uint>(<span class="self">self</span>.as_raw(), libc::IPPROTO_TCP, libc::TCP_USER_TIMEOUT) |
| .map(|millis| { |
| <span class="kw">if </span>millis == <span class="number">0 </span>{ |
| <span class="prelude-val">None |
| </span>} <span class="kw">else </span>{ |
| <span class="prelude-val">Some</span>(Duration::from_millis(millis <span class="kw">as </span>u64)) |
| } |
| }) |
| } |
| } |
| |
| <span class="doccomment">/// Attach Berkeley Packet Filter(BPF) on this socket. |
| /// |
| /// BPF allows a user-space program to attach a filter onto any socket |
| /// and allow or disallow certain types of data to come through the socket. |
| /// |
| /// For more information about this option, see [filter](https://www.kernel.org/doc/html/v5.12/networking/filter.html) |
| </span><span class="attribute">#[cfg(all(feature = <span class="string">"all"</span>, any(target_os = <span class="string">"linux"</span>, target_os = <span class="string">"android"</span>)))] |
| </span><span class="kw">pub fn </span>attach_filter(<span class="kw-2">&</span><span class="self">self</span>, filters: <span class="kw-2">&</span>[libc::sock_filter]) -> io::Result<()> { |
| <span class="kw">let </span>prog = libc::sock_fprog { |
| len: filters.len() <span class="kw">as </span>u16, |
| filter: filters.as_ptr() <span class="kw">as </span><span class="kw-2">*mut </span><span class="kw">_</span>, |
| }; |
| |
| <span class="kw">unsafe </span>{ |
| setsockopt( |
| <span class="self">self</span>.as_raw(), |
| libc::SOL_SOCKET, |
| libc::SO_ATTACH_FILTER, |
| prog, |
| ) |
| } |
| } |
| |
| <span class="doccomment">/// Detach Berkeley Packet Filter(BPF) from this socket. |
| /// |
| /// For more information about this option, see [`attach_filter`] |
| </span><span class="attribute">#[cfg(all(feature = <span class="string">"all"</span>, any(target_os = <span class="string">"linux"</span>, target_os = <span class="string">"android"</span>)))] |
| </span><span class="kw">pub fn </span>detach_filter(<span class="kw-2">&</span><span class="self">self</span>) -> io::Result<()> { |
| <span class="kw">unsafe </span>{ setsockopt(<span class="self">self</span>.as_raw(), libc::SOL_SOCKET, libc::SO_DETACH_FILTER, <span class="number">0</span>) } |
| } |
| } |
| |
| <span class="attribute">#[cfg_attr(docsrs, doc(cfg(unix)))] |
| </span><span class="kw">impl </span>AsRawFd <span class="kw">for </span><span class="kw">crate</span>::Socket { |
| <span class="kw">fn </span>as_raw_fd(<span class="kw-2">&</span><span class="self">self</span>) -> c_int { |
| <span class="self">self</span>.as_raw() |
| } |
| } |
| |
| <span class="attribute">#[cfg_attr(docsrs, doc(cfg(unix)))] |
| </span><span class="kw">impl </span>IntoRawFd <span class="kw">for </span><span class="kw">crate</span>::Socket { |
| <span class="kw">fn </span>into_raw_fd(<span class="self">self</span>) -> c_int { |
| <span class="self">self</span>.into_raw() |
| } |
| } |
| |
| <span class="attribute">#[cfg_attr(docsrs, doc(cfg(unix)))] |
| </span><span class="kw">impl </span>FromRawFd <span class="kw">for </span><span class="kw">crate</span>::Socket { |
| <span class="kw">unsafe fn </span>from_raw_fd(fd: c_int) -> <span class="kw">crate</span>::Socket { |
| <span class="kw">crate</span>::Socket::from_raw(fd) |
| } |
| } |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"all"</span>)] |
| </span><span class="macro">from!</span>(UnixStream, <span class="kw">crate</span>::Socket); |
| <span class="attribute">#[cfg(feature = <span class="string">"all"</span>)] |
| </span><span class="macro">from!</span>(UnixListener, <span class="kw">crate</span>::Socket); |
| <span class="attribute">#[cfg(feature = <span class="string">"all"</span>)] |
| </span><span class="macro">from!</span>(UnixDatagram, <span class="kw">crate</span>::Socket); |
| <span class="attribute">#[cfg(feature = <span class="string">"all"</span>)] |
| </span><span class="macro">from!</span>(<span class="kw">crate</span>::Socket, UnixStream); |
| <span class="attribute">#[cfg(feature = <span class="string">"all"</span>)] |
| </span><span class="macro">from!</span>(<span class="kw">crate</span>::Socket, UnixListener); |
| <span class="attribute">#[cfg(feature = <span class="string">"all"</span>)] |
| </span><span class="macro">from!</span>(<span class="kw">crate</span>::Socket, UnixDatagram); |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>in_addr_convertion() { |
| <span class="kw">let </span>ip = Ipv4Addr::new(<span class="number">127</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">1</span>); |
| <span class="kw">let </span>raw = to_in_addr(<span class="kw-2">&</span>ip); |
| <span class="comment">// NOTE: `in_addr` is packed on NetBSD and it's unsafe to borrow. |
| </span><span class="kw">let </span>a = raw.s_addr; |
| <span class="macro">assert_eq!</span>(a, u32::from_ne_bytes([<span class="number">127</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">1</span>])); |
| <span class="macro">assert_eq!</span>(from_in_addr(raw), ip); |
| |
| <span class="kw">let </span>ip = Ipv4Addr::new(<span class="number">127</span>, <span class="number">34</span>, <span class="number">4</span>, <span class="number">12</span>); |
| <span class="kw">let </span>raw = to_in_addr(<span class="kw-2">&</span>ip); |
| <span class="kw">let </span>a = raw.s_addr; |
| <span class="macro">assert_eq!</span>(a, u32::from_ne_bytes([<span class="number">127</span>, <span class="number">34</span>, <span class="number">4</span>, <span class="number">12</span>])); |
| <span class="macro">assert_eq!</span>(from_in_addr(raw), ip); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>in6_addr_convertion() { |
| <span class="kw">let </span>ip = Ipv6Addr::new(<span class="number">0x2000</span>, <span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>, <span class="number">4</span>, <span class="number">5</span>, <span class="number">6</span>, <span class="number">7</span>); |
| <span class="kw">let </span>raw = to_in6_addr(<span class="kw-2">&</span>ip); |
| <span class="kw">let </span>want = [<span class="number">32</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">1</span>, <span class="number">0</span>, <span class="number">2</span>, <span class="number">0</span>, <span class="number">3</span>, <span class="number">0</span>, <span class="number">4</span>, <span class="number">0</span>, <span class="number">5</span>, <span class="number">0</span>, <span class="number">6</span>, <span class="number">0</span>, <span class="number">7</span>]; |
| <span class="macro">assert_eq!</span>(raw.s6_addr, want); |
| <span class="macro">assert_eq!</span>(from_in6_addr(raw), ip); |
| } |
| </code></pre></div> |
| </section></div></main><div id="rustdoc-vars" data-root-path="../../../" data-current-crate="socket2" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.66.0-nightly (5c8bff74b 2022-10-21)" ></div></body></html> |