Sophie: rust-doc-1.28.0-1.mga6 armv7hl

rust-doc-1.28.0-1.mga6.armv7hl.rpm

<!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 to the Rust file `libstd/sys/unix/mod.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>mod.rs.html -- 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="../../../../dark.css"><link rel="stylesheet" type="text/css" href="../../../../light.css" id="themeStyle"><script src="../../../../storage.js"></script><link rel="shortcut icon" href="https://doc.rust-lang.org/favicon.ico"></head><body class="rustdoc source"><!--[if lte IE 8]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><div class="sidebar-menu">&#9776;</div><a href='../../../../std/index.html'><img src='https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png' alt='logo' width='100'></a></nav><div class="theme-picker"><button id="theme-picker" aria-label="Pick another theme!"><img src="../../../../brush.svg" width="18" alt="Pick another theme!"></button><div id="theme-choices"></div></div><script src="../../../../theme.js"></script><nav class="sub"><form class="search-form js-only"><div class="search-container"><input class="search-input" name="search" autocomplete="off" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><a id="settings-menu" href="../../../../settings.html"><img src="../../../../wheel.svg" width="18" alt="Change settings"></a></div></form></nav><section id="main" class="content"><pre class="line-numbers"><span id="1">  1</span>
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</pre><pre class="rust ">
<span class="comment">// Copyright 2014 The Rust Project Developers. See the COPYRIGHT</span>
<span class="comment">// file at the top-level directory of this distribution and at</span>
<span class="comment">// http://rust-lang.org/COPYRIGHT.</span>
<span class="comment">//</span>
<span class="comment">// Licensed under the Apache License, Version 2.0 &lt;LICENSE-APACHE or</span>
<span class="comment">// http://www.apache.org/licenses/LICENSE-2.0&gt; or the MIT license</span>
<span class="comment">// &lt;LICENSE-MIT or http://opensource.org/licenses/MIT&gt;, at your</span>
<span class="comment">// option. This file may not be copied, modified, or distributed</span>
<span class="comment">// except according to those terms.</span>

<span class="attribute">#![<span class="ident">allow</span>(<span class="ident">missing_docs</span>, <span class="ident">bad_style</span>)]</span>

<span class="kw">use</span> <span class="ident">io</span>::{<span class="self">self</span>, <span class="ident">ErrorKind</span>};
<span class="kw">use</span> <span class="ident">libc</span>;

<span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">any</span>(<span class="ident">dox</span>, <span class="ident">target_os</span> <span class="op">=</span> <span class="string">&quot;linux&quot;</span>))]</span> <span class="kw">pub</span> <span class="kw">use</span> <span class="ident">os</span>::<span class="ident">linux</span> <span class="kw">as</span> <span class="ident">platform</span>;

<span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">all</span>(<span class="ident">not</span>(<span class="ident">dox</span>), <span class="ident">target_os</span> <span class="op">=</span> <span class="string">&quot;android&quot;</span>))]</span>   <span class="kw">pub</span> <span class="kw">use</span> <span class="ident">os</span>::<span class="ident">android</span> <span class="kw">as</span> <span class="ident">platform</span>;
<span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">all</span>(<span class="ident">not</span>(<span class="ident">dox</span>), <span class="ident">target_os</span> <span class="op">=</span> <span class="string">&quot;bitrig&quot;</span>))]</span>    <span class="kw">pub</span> <span class="kw">use</span> <span class="ident">os</span>::<span class="ident">bitrig</span> <span class="kw">as</span> <span class="ident">platform</span>;
<span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">all</span>(<span class="ident">not</span>(<span class="ident">dox</span>), <span class="ident">target_os</span> <span class="op">=</span> <span class="string">&quot;dragonfly&quot;</span>))]</span> <span class="kw">pub</span> <span class="kw">use</span> <span class="ident">os</span>::<span class="ident">dragonfly</span> <span class="kw">as</span> <span class="ident">platform</span>;
<span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">all</span>(<span class="ident">not</span>(<span class="ident">dox</span>), <span class="ident">target_os</span> <span class="op">=</span> <span class="string">&quot;freebsd&quot;</span>))]</span>   <span class="kw">pub</span> <span class="kw">use</span> <span class="ident">os</span>::<span class="ident">freebsd</span> <span class="kw">as</span> <span class="ident">platform</span>;
<span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">all</span>(<span class="ident">not</span>(<span class="ident">dox</span>), <span class="ident">target_os</span> <span class="op">=</span> <span class="string">&quot;haiku&quot;</span>))]</span>     <span class="kw">pub</span> <span class="kw">use</span> <span class="ident">os</span>::<span class="ident">haiku</span> <span class="kw">as</span> <span class="ident">platform</span>;
<span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">all</span>(<span class="ident">not</span>(<span class="ident">dox</span>), <span class="ident">target_os</span> <span class="op">=</span> <span class="string">&quot;ios&quot;</span>))]</span>       <span class="kw">pub</span> <span class="kw">use</span> <span class="ident">os</span>::<span class="ident">ios</span> <span class="kw">as</span> <span class="ident">platform</span>;
<span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">all</span>(<span class="ident">not</span>(<span class="ident">dox</span>), <span class="ident">target_os</span> <span class="op">=</span> <span class="string">&quot;macos&quot;</span>))]</span>     <span class="kw">pub</span> <span class="kw">use</span> <span class="ident">os</span>::<span class="ident">macos</span> <span class="kw">as</span> <span class="ident">platform</span>;
<span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">all</span>(<span class="ident">not</span>(<span class="ident">dox</span>), <span class="ident">target_os</span> <span class="op">=</span> <span class="string">&quot;netbsd&quot;</span>))]</span>    <span class="kw">pub</span> <span class="kw">use</span> <span class="ident">os</span>::<span class="ident">netbsd</span> <span class="kw">as</span> <span class="ident">platform</span>;
<span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">all</span>(<span class="ident">not</span>(<span class="ident">dox</span>), <span class="ident">target_os</span> <span class="op">=</span> <span class="string">&quot;openbsd&quot;</span>))]</span>   <span class="kw">pub</span> <span class="kw">use</span> <span class="ident">os</span>::<span class="ident">openbsd</span> <span class="kw">as</span> <span class="ident">platform</span>;
<span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">all</span>(<span class="ident">not</span>(<span class="ident">dox</span>), <span class="ident">target_os</span> <span class="op">=</span> <span class="string">&quot;solaris&quot;</span>))]</span>   <span class="kw">pub</span> <span class="kw">use</span> <span class="ident">os</span>::<span class="ident">solaris</span> <span class="kw">as</span> <span class="ident">platform</span>;
<span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">all</span>(<span class="ident">not</span>(<span class="ident">dox</span>), <span class="ident">target_os</span> <span class="op">=</span> <span class="string">&quot;emscripten&quot;</span>))]</span> <span class="kw">pub</span> <span class="kw">use</span> <span class="ident">os</span>::<span class="ident">emscripten</span> <span class="kw">as</span> <span class="ident">platform</span>;
<span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">all</span>(<span class="ident">not</span>(<span class="ident">dox</span>), <span class="ident">target_os</span> <span class="op">=</span> <span class="string">&quot;fuchsia&quot;</span>))]</span>   <span class="kw">pub</span> <span class="kw">use</span> <span class="ident">os</span>::<span class="ident">fuchsia</span> <span class="kw">as</span> <span class="ident">platform</span>;
<span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">all</span>(<span class="ident">not</span>(<span class="ident">dox</span>), <span class="ident">target_os</span> <span class="op">=</span> <span class="string">&quot;l4re&quot;</span>))]</span>      <span class="kw">pub</span> <span class="kw">use</span> <span class="ident">os</span>::<span class="ident">linux</span> <span class="kw">as</span> <span class="ident">platform</span>;

<span class="kw">pub</span> <span class="kw">use</span> <span class="self">self</span>::<span class="ident">rand</span>::<span class="ident">hashmap_random_keys</span>;
<span class="kw">pub</span> <span class="kw">use</span> <span class="ident">libc</span>::<span class="ident">strlen</span>;

<span class="attribute">#[<span class="ident">macro_use</span>]</span>
<span class="kw">pub</span> <span class="kw">mod</span> <span class="ident">weak</span>;

<span class="kw">pub</span> <span class="kw">mod</span> <span class="ident">args</span>;
<span class="kw">pub</span> <span class="kw">mod</span> <span class="ident">android</span>;
<span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">&quot;backtrace&quot;</span>)]</span>
<span class="kw">pub</span> <span class="kw">mod</span> <span class="ident">backtrace</span>;
<span class="kw">pub</span> <span class="kw">mod</span> <span class="ident">cmath</span>;
<span class="kw">pub</span> <span class="kw">mod</span> <span class="ident">condvar</span>;
<span class="kw">pub</span> <span class="kw">mod</span> <span class="ident">env</span>;
<span class="kw">pub</span> <span class="kw">mod</span> <span class="ident">ext</span>;
<span class="kw">pub</span> <span class="kw">mod</span> <span class="ident">fast_thread_local</span>;
<span class="kw">pub</span> <span class="kw">mod</span> <span class="ident">fd</span>;
<span class="kw">pub</span> <span class="kw">mod</span> <span class="ident">fs</span>;
<span class="kw">pub</span> <span class="kw">mod</span> <span class="ident">memchr</span>;
<span class="kw">pub</span> <span class="kw">mod</span> <span class="ident">mutex</span>;
<span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">not</span>(<span class="ident">target_os</span> <span class="op">=</span> <span class="string">&quot;l4re&quot;</span>))]</span>
<span class="kw">pub</span> <span class="kw">mod</span> <span class="ident">net</span>;
<span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">target_os</span> <span class="op">=</span> <span class="string">&quot;l4re&quot;</span>)]</span>
<span class="kw">mod</span> <span class="ident">l4re</span>;
<span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">target_os</span> <span class="op">=</span> <span class="string">&quot;l4re&quot;</span>)]</span>
<span class="kw">pub</span> <span class="kw">use</span> <span class="self">self</span>::<span class="ident">l4re</span>::<span class="ident">net</span>;
<span class="kw">pub</span> <span class="kw">mod</span> <span class="ident">os</span>;
<span class="kw">pub</span> <span class="kw">mod</span> <span class="ident">os_str</span>;
<span class="kw">pub</span> <span class="kw">mod</span> <span class="ident">path</span>;
<span class="kw">pub</span> <span class="kw">mod</span> <span class="ident">pipe</span>;
<span class="kw">pub</span> <span class="kw">mod</span> <span class="ident">process</span>;
<span class="kw">pub</span> <span class="kw">mod</span> <span class="ident">rand</span>;
<span class="kw">pub</span> <span class="kw">mod</span> <span class="ident">rwlock</span>;
<span class="kw">pub</span> <span class="kw">mod</span> <span class="ident">stack_overflow</span>;
<span class="kw">pub</span> <span class="kw">mod</span> <span class="ident">thread</span>;
<span class="kw">pub</span> <span class="kw">mod</span> <span class="ident">thread_local</span>;
<span class="kw">pub</span> <span class="kw">mod</span> <span class="ident">time</span>;
<span class="kw">pub</span> <span class="kw">mod</span> <span class="ident">stdio</span>;

<span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">not</span>(<span class="ident">test</span>))]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">init</span>() {
    <span class="comment">// By default, some platforms will send a *signal* when an EPIPE error</span>
    <span class="comment">// would otherwise be delivered. This runtime doesn&#39;t install a SIGPIPE</span>
    <span class="comment">// handler, causing it to kill the program, which isn&#39;t exactly what we</span>
    <span class="comment">// want!</span>
    <span class="comment">//</span>
    <span class="comment">// Hence, we set SIGPIPE to ignore when the program starts up in order</span>
    <span class="comment">// to prevent this problem.</span>
    <span class="kw">unsafe</span> {
        <span class="ident">reset_sigpipe</span>();
    }

    <span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">not</span>(<span class="ident">any</span>(<span class="ident">target_os</span> <span class="op">=</span> <span class="string">&quot;emscripten&quot;</span>, <span class="ident">target_os</span> <span class="op">=</span> <span class="string">&quot;fuchsia&quot;</span>)))]</span>
    <span class="kw">unsafe</span> <span class="kw">fn</span> <span class="ident">reset_sigpipe</span>() {
        <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">signal</span>(<span class="ident">libc</span>::<span class="ident">SIGPIPE</span>, <span class="ident">libc</span>::<span class="ident">SIG_IGN</span>) <span class="op">!=</span> <span class="ident">libc</span>::<span class="ident">SIG_ERR</span>);
    }
    <span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">any</span>(<span class="ident">target_os</span> <span class="op">=</span> <span class="string">&quot;emscripten&quot;</span>, <span class="ident">target_os</span> <span class="op">=</span> <span class="string">&quot;fuchsia&quot;</span>))]</span>
    <span class="kw">unsafe</span> <span class="kw">fn</span> <span class="ident">reset_sigpipe</span>() {}
}

<span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">target_os</span> <span class="op">=</span> <span class="string">&quot;android&quot;</span>)]</span>
<span class="kw">pub</span> <span class="kw">use</span> <span class="ident">sys</span>::<span class="ident">android</span>::<span class="ident">signal</span>;
<span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">not</span>(<span class="ident">target_os</span> <span class="op">=</span> <span class="string">&quot;android&quot;</span>))]</span>
<span class="kw">pub</span> <span class="kw">use</span> <span class="ident">libc</span>::<span class="ident">signal</span>;

<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">decode_error_kind</span>(<span class="ident">errno</span>: <span class="ident">i32</span>) <span class="op">-&gt;</span> <span class="ident">ErrorKind</span> {
    <span class="kw">match</span> <span class="ident">errno</span> <span class="kw">as</span> <span class="ident">libc</span>::<span class="ident">c_int</span> {
        <span class="ident">libc</span>::<span class="ident">ECONNREFUSED</span> <span class="op">=&gt;</span> <span class="ident">ErrorKind</span>::<span class="ident">ConnectionRefused</span>,
        <span class="ident">libc</span>::<span class="ident">ECONNRESET</span> <span class="op">=&gt;</span> <span class="ident">ErrorKind</span>::<span class="ident">ConnectionReset</span>,
        <span class="ident">libc</span>::<span class="ident">EPERM</span> <span class="op">|</span> <span class="ident">libc</span>::<span class="ident">EACCES</span> <span class="op">=&gt;</span> <span class="ident">ErrorKind</span>::<span class="ident">PermissionDenied</span>,
        <span class="ident">libc</span>::<span class="ident">EPIPE</span> <span class="op">=&gt;</span> <span class="ident">ErrorKind</span>::<span class="ident">BrokenPipe</span>,
        <span class="ident">libc</span>::<span class="ident">ENOTCONN</span> <span class="op">=&gt;</span> <span class="ident">ErrorKind</span>::<span class="ident">NotConnected</span>,
        <span class="ident">libc</span>::<span class="ident">ECONNABORTED</span> <span class="op">=&gt;</span> <span class="ident">ErrorKind</span>::<span class="ident">ConnectionAborted</span>,
        <span class="ident">libc</span>::<span class="ident">EADDRNOTAVAIL</span> <span class="op">=&gt;</span> <span class="ident">ErrorKind</span>::<span class="ident">AddrNotAvailable</span>,
        <span class="ident">libc</span>::<span class="ident">EADDRINUSE</span> <span class="op">=&gt;</span> <span class="ident">ErrorKind</span>::<span class="ident">AddrInUse</span>,
        <span class="ident">libc</span>::<span class="ident">ENOENT</span> <span class="op">=&gt;</span> <span class="ident">ErrorKind</span>::<span class="ident">NotFound</span>,
        <span class="ident">libc</span>::<span class="ident">EINTR</span> <span class="op">=&gt;</span> <span class="ident">ErrorKind</span>::<span class="ident">Interrupted</span>,
        <span class="ident">libc</span>::<span class="ident">EINVAL</span> <span class="op">=&gt;</span> <span class="ident">ErrorKind</span>::<span class="ident">InvalidInput</span>,
        <span class="ident">libc</span>::<span class="ident">ETIMEDOUT</span> <span class="op">=&gt;</span> <span class="ident">ErrorKind</span>::<span class="ident">TimedOut</span>,
        <span class="ident">libc</span>::<span class="ident">EEXIST</span> <span class="op">=&gt;</span> <span class="ident">ErrorKind</span>::<span class="ident">AlreadyExists</span>,

        <span class="comment">// These two constants can have the same value on some systems,</span>
        <span class="comment">// but different values on others, so we can&#39;t use a match</span>
        <span class="comment">// clause</span>
        <span class="ident">x</span> <span class="kw">if</span> <span class="ident">x</span> <span class="op">==</span> <span class="ident">libc</span>::<span class="ident">EAGAIN</span> <span class="op">||</span> <span class="ident">x</span> <span class="op">==</span> <span class="ident">libc</span>::<span class="ident">EWOULDBLOCK</span> <span class="op">=&gt;</span>
            <span class="ident">ErrorKind</span>::<span class="ident">WouldBlock</span>,

        <span class="kw">_</span> <span class="op">=&gt;</span> <span class="ident">ErrorKind</span>::<span class="ident">Other</span>,
    }
}

<span class="attribute">#[<span class="ident">doc</span>(<span class="ident">hidden</span>)]</span>
<span class="kw">pub</span> <span class="kw">trait</span> <span class="ident">IsMinusOne</span> {
    <span class="kw">fn</span> <span class="ident">is_minus_one</span>(<span class="kw-2">&amp;</span><span class="self">self</span>) <span class="op">-&gt;</span> <span class="ident">bool</span>;
}

<span class="macro">macro_rules</span><span class="macro">!</span> <span class="ident">impl_is_minus_one</span> {
    ($(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">t</span>:<span class="ident">ident</span>)<span class="kw-2">*</span>) <span class="op">=&gt;</span> ($(<span class="kw">impl</span> <span class="ident">IsMinusOne</span> <span class="kw">for</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">t</span> {
        <span class="kw">fn</span> <span class="ident">is_minus_one</span>(<span class="kw-2">&amp;</span><span class="self">self</span>) <span class="op">-&gt;</span> <span class="ident">bool</span> {
            <span class="kw-2">*</span><span class="self">self</span> <span class="op">==</span> <span class="op">-</span><span class="number">1</span>
        }
    })<span class="kw-2">*</span>)
}

<span class="macro">impl_is_minus_one</span><span class="macro">!</span> { <span class="ident">i8</span> <span class="ident">i16</span> <span class="ident">i32</span> <span class="ident">i64</span> <span class="ident">isize</span> }

<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">cvt</span><span class="op">&lt;</span><span class="ident">T</span>: <span class="ident">IsMinusOne</span><span class="op">&gt;</span>(<span class="ident">t</span>: <span class="ident">T</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">T</span><span class="op">&gt;</span> {
    <span class="kw">if</span> <span class="ident">t</span>.<span class="ident">is_minus_one</span>() {
        <span class="prelude-val">Err</span>(<span class="ident">io</span>::<span class="ident">Error</span>::<span class="ident">last_os_error</span>())
    } <span class="kw">else</span> {
        <span class="prelude-val">Ok</span>(<span class="ident">t</span>)
    }
}

<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">cvt_r</span><span class="op">&lt;</span><span class="ident">T</span>, <span class="ident">F</span><span class="op">&gt;</span>(<span class="kw-2">mut</span> <span class="ident">f</span>: <span class="ident">F</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">T</span><span class="op">&gt;</span>
    <span class="kw">where</span> <span class="ident">T</span>: <span class="ident">IsMinusOne</span>,
          <span class="ident">F</span>: <span class="ident">FnMut</span>() <span class="op">-&gt;</span> <span class="ident">T</span>
{
    <span class="kw">loop</span> {
        <span class="kw">match</span> <span class="ident">cvt</span>(<span class="ident">f</span>()) {
            <span class="prelude-val">Err</span>(<span class="kw-2">ref</span> <span class="ident">e</span>) <span class="kw">if</span> <span class="ident">e</span>.<span class="ident">kind</span>() <span class="op">==</span> <span class="ident">ErrorKind</span>::<span class="ident">Interrupted</span> <span class="op">=&gt;</span> {}
            <span class="ident">other</span> <span class="op">=&gt;</span> <span class="kw">return</span> <span class="ident">other</span>,
        }
    }
}

<span class="comment">// On Unix-like platforms, libc::abort will unregister signal handlers</span>
<span class="comment">// including the SIGABRT handler, preventing the abort from being blocked, and</span>
<span class="comment">// fclose streams, with the side effect of flushing them so libc bufferred</span>
<span class="comment">// output will be printed.  Additionally the shell will generally print a more</span>
<span class="comment">// understandable error message like &quot;Abort trap&quot; rather than &quot;Illegal</span>
<span class="comment">// instruction&quot; that intrinsics::abort would cause, as intrinsics::abort is</span>
<span class="comment">// implemented as an illegal instruction.</span>
<span class="kw">pub</span> <span class="kw">unsafe</span> <span class="kw">fn</span> <span class="ident">abort_internal</span>() <span class="op">-&gt;</span> <span class="op">!</span> {
    ::<span class="ident">libc</span>::<span class="ident">abort</span>()
}
</pre>
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