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<!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 `src/sys/unix/uds/datagram.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>datagram.rs - source</title><link rel="stylesheet" type="text/css" href="../../../../../normalize.css"><link rel="stylesheet" type="text/css" href="../../../../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" type="text/css" href="../../../../../light.css" id="themeStyle"><link rel="stylesheet" type="text/css" href="../../../../../dark.css" disabled ><link rel="stylesheet" type="text/css" href="../../../../../ayu.css" disabled ><script id="default-settings"></script><script src="../../../../../storage.js"></script><script src="../../../../../crates.js"></script><noscript><link rel="stylesheet" href="../../../../../noscript.css"></noscript><link rel="icon" type="image/svg+xml" href="../../../../../favicon.svg">
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</pre><div class="example-wrap"><pre class="rust ">
<span class="kw">use</span> <span class="kw">super</span>::{<span class="ident">socket_addr</span>, <span class="ident">SocketAddr</span>};
<span class="kw">use</span> <span class="kw">crate</span>::<span class="ident">sys</span>::<span class="ident">unix</span>::<span class="ident">net</span>::<span class="ident">new_socket</span>;
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">io</span>;
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">os</span>::<span class="ident">unix</span>::<span class="ident">io</span>::{<span class="ident">AsRawFd</span>, <span class="ident">FromRawFd</span>};
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">os</span>::<span class="ident">unix</span>::<span class="ident">net</span>;
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">path</span>::<span class="ident">Path</span>;
<span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn</span> <span class="ident">bind</span>(<span class="ident">path</span>: <span class="kw-2">&amp;</span><span class="ident">Path</span>) <span class="op">-</span><span class="op">&gt;</span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op">&lt;</span><span class="ident">net</span>::<span class="ident">UnixDatagram</span><span class="op">&gt;</span> {
<span class="kw">let</span> <span class="ident">fd</span> <span class="op">=</span> <span class="ident">new_socket</span>(<span class="ident">libc</span>::<span class="ident">AF_UNIX</span>, <span class="ident">libc</span>::<span class="ident">SOCK_DGRAM</span>)<span class="question-mark">?</span>;
<span class="comment">// Ensure the fd is closed.</span>
<span class="kw">let</span> <span class="ident">socket</span> <span class="op">=</span> <span class="kw">unsafe</span> { <span class="ident">net</span>::<span class="ident">UnixDatagram</span>::<span class="ident">from_raw_fd</span>(<span class="ident">fd</span>) };
<span class="kw">let</span> (<span class="ident">sockaddr</span>, <span class="ident">socklen</span>) <span class="op">=</span> <span class="ident">socket_addr</span>(<span class="ident">path</span>)<span class="question-mark">?</span>;
<span class="kw">let</span> <span class="ident">sockaddr</span> <span class="op">=</span> <span class="kw-2">&amp;</span><span class="ident">sockaddr</span> <span class="kw">as</span> <span class="kw-2">*</span><span class="kw">const</span> <span class="ident">libc</span>::<span class="ident">sockaddr_un</span> <span class="kw">as</span> <span class="kw-2">*</span><span class="kw">const</span> <span class="kw">_</span>;
<span class="macro">syscall</span><span class="macro">!</span>(<span class="ident">bind</span>(<span class="ident">fd</span>, <span class="ident">sockaddr</span>, <span class="ident">socklen</span>))<span class="question-mark">?</span>;
<span class="prelude-val">Ok</span>(<span class="ident">socket</span>)
}
<span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn</span> <span class="ident">unbound</span>() <span class="op">-</span><span class="op">&gt;</span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op">&lt;</span><span class="ident">net</span>::<span class="ident">UnixDatagram</span><span class="op">&gt;</span> {
<span class="ident">new_socket</span>(<span class="ident">libc</span>::<span class="ident">AF_UNIX</span>, <span class="ident">libc</span>::<span class="ident">SOCK_DGRAM</span>)
.<span class="ident">map</span>(<span class="op">|</span><span class="ident">socket</span><span class="op">|</span> <span class="kw">unsafe</span> { <span class="ident">net</span>::<span class="ident">UnixDatagram</span>::<span class="ident">from_raw_fd</span>(<span class="ident">socket</span>) })
}
<span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn</span> <span class="ident">pair</span>() <span class="op">-</span><span class="op">&gt;</span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op">&lt;</span>(<span class="ident">net</span>::<span class="ident">UnixDatagram</span>, <span class="ident">net</span>::<span class="ident">UnixDatagram</span>)<span class="op">&gt;</span> {
<span class="kw">super</span>::<span class="ident">pair</span>(<span class="ident">libc</span>::<span class="ident">SOCK_DGRAM</span>)
}
<span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn</span> <span class="ident">local_addr</span>(<span class="ident">socket</span>: <span class="kw-2">&amp;</span><span class="ident">net</span>::<span class="ident">UnixDatagram</span>) <span class="op">-</span><span class="op">&gt;</span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op">&lt;</span><span class="ident">SocketAddr</span><span class="op">&gt;</span> {
<span class="kw">super</span>::<span class="ident">local_addr</span>(<span class="ident">socket</span>.<span class="ident">as_raw_fd</span>())
}
<span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn</span> <span class="ident">peer_addr</span>(<span class="ident">socket</span>: <span class="kw-2">&amp;</span><span class="ident">net</span>::<span class="ident">UnixDatagram</span>) <span class="op">-</span><span class="op">&gt;</span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op">&lt;</span><span class="ident">SocketAddr</span><span class="op">&gt;</span> {
<span class="kw">super</span>::<span class="ident">peer_addr</span>(<span class="ident">socket</span>.<span class="ident">as_raw_fd</span>())
}
<span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn</span> <span class="ident">recv_from</span>(
<span class="ident">socket</span>: <span class="kw-2">&amp;</span><span class="ident">net</span>::<span class="ident">UnixDatagram</span>,
<span class="ident">dst</span>: <span class="kw-2">&amp;</span><span class="kw-2">mut</span> [<span class="ident">u8</span>],
) <span class="op">-</span><span class="op">&gt;</span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op">&lt;</span>(<span class="ident">usize</span>, <span class="ident">SocketAddr</span>)<span class="op">&gt;</span> {
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">count</span> <span class="op">=</span> <span class="number">0</span>;
<span class="kw">let</span> <span class="ident">socketaddr</span> <span class="op">=</span> <span class="ident">SocketAddr</span>::<span class="ident">new</span>(<span class="op">|</span><span class="ident">sockaddr</span>, <span class="ident">socklen</span><span class="op">|</span> {
<span class="macro">syscall</span><span class="macro">!</span>(<span class="ident">recvfrom</span>(
<span class="ident">socket</span>.<span class="ident">as_raw_fd</span>(),
<span class="ident">dst</span>.<span class="ident">as_mut_ptr</span>() <span class="kw">as</span> <span class="kw-2">*</span><span class="kw-2">mut</span> <span class="kw">_</span>,
<span class="ident">dst</span>.<span class="ident">len</span>(),
<span class="number">0</span>,
<span class="ident">sockaddr</span>,
<span class="ident">socklen</span>,
))
.<span class="ident">map</span>(<span class="op">|</span><span class="ident">c</span><span class="op">|</span> {
<span class="ident">count</span> <span class="op">=</span> <span class="ident">c</span>;
<span class="ident">c</span> <span class="kw">as</span> <span class="ident">libc</span>::<span class="ident">c_int</span>
})
})<span class="question-mark">?</span>;
<span class="prelude-val">Ok</span>((<span class="ident">count</span> <span class="kw">as</span> <span class="ident">usize</span>, <span class="ident">socketaddr</span>))
}
</pre></div>
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