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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="API documentation for the Rust `ErrnoSentinel` trait in crate `nix`."><meta name="keywords" content="rust, rustlang, rust-lang, ErrnoSentinel"><title>nix::errno::ErrnoSentinel - Rust</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><noscript><link rel="stylesheet" href="../../noscript.css"></noscript><link rel="shortcut icon" href="../../favicon.ico"><style type="text/css">#crate-search{background-image:url("../../down-arrow.svg");}</style></head><body class="rustdoc trait"><!--[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">☰</div><a href='../../nix/index.html'><div class='logo-container'><img src='../../rust-logo.png' alt='logo'></div></a><p class='location'>Trait ErrnoSentinel</p><div class="sidebar-elems"><div class="block items"><a class="sidebar-title" href="#required-methods">Required Methods</a><div class="sidebar-links"><a href="#tymethod.sentinel">sentinel</a></div><a class="sidebar-title" href="#foreign-impls">Implementations on Foreign Types</a><div class="sidebar-links"><a href="#impl-ErrnoSentinel-for-*mut%20c_void">*mut c_void</a><a href="#impl-ErrnoSentinel-for-i32">i32</a><a href="#impl-ErrnoSentinel-for-i64">i64</a><a href="#impl-ErrnoSentinel-for-isize">isize</a><a href="#impl-ErrnoSentinel-for-sighandler_t">sighandler_t</a></div><a class="sidebar-title" href="#implementors">Implementors</a></div><p class='location'><a href='../index.html'>nix</a>::<wbr><a href='index.html'>errno</a></p><script>window.sidebarCurrent = {name: 'ErrnoSentinel', ty: 'trait', relpath: ''};</script><script defer src="sidebar-items.js"></script></div></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"><div><select id="crate-search"><option value="All crates">All crates</option></select><input class="search-input" name="search" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"></div><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"><h1 class='fqn'><span class='out-of-band'><span id='render-detail'><a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">[<span class='inner'>−</span>]</a></span><a class='srclink' href='../../src/nix/errno.rs.html#90-92' title='goto source code'>[src]</a></span><span class='in-band'>Trait <a href='../index.html'>nix</a>::<wbr><a href='index.html'>errno</a>::<wbr><a class="trait" href=''>ErrnoSentinel</a></span></h1><div class="docblock type-decl hidden-by-usual-hider"><pre class='rust trait'>pub trait ErrnoSentinel: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a> {
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fn <a href='#tymethod.sentinel' class='fnname'>sentinel</a>() -> Self;
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}</pre></div><div class='docblock'><p>The sentinel value indicates that a function failed and more detailed
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information about the error can be found in <code>errno</code></p>
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</div>
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<h2 id='required-methods' class='small-section-header'>Required methods<a href='#required-methods' class='anchor'></a></h2><div class='methods'><h3 id='tymethod.sentinel' class='method'><code id='sentinel.v'>fn <a href='#tymethod.sentinel' class='fnname'>sentinel</a>() -> Self</code></h3></div><span class='loading-content'>Loading content...</span>
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<h2 id='foreign-impls' class='small-section-header'>Implementations on Foreign Types<a href='#foreign-impls' class='anchor'></a></h2><h3 id='impl-ErrnoSentinel-for-isize' class='impl'><code class='in-band'>impl <a class="trait" href="../../nix/errno/trait.ErrnoSentinel.html" title="trait nix::errno::ErrnoSentinel">ErrnoSentinel</a> for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.isize.html">isize</a></code><a href='#impl-ErrnoSentinel-for-isize' class='anchor'></a><a class='srclink' href='../../src/nix/errno.rs.html#94-96' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.sentinel' class="method hidden"><code id='sentinel.v-1'>fn <a href='#method.sentinel' class='fnname'>sentinel</a>() -> Self</code><a class='srclink' href='../../src/nix/errno.rs.html#95' title='goto source code'>[src]</a></h4></div><h3 id='impl-ErrnoSentinel-for-i32' class='impl'><code class='in-band'>impl <a class="trait" href="../../nix/errno/trait.ErrnoSentinel.html" title="trait nix::errno::ErrnoSentinel">ErrnoSentinel</a> for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i32.html">i32</a></code><a href='#impl-ErrnoSentinel-for-i32' class='anchor'></a><a class='srclink' href='../../src/nix/errno.rs.html#98-100' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.sentinel-1' class="method hidden"><code id='sentinel.v-2'>fn <a href='#method.sentinel' class='fnname'>sentinel</a>() -> Self</code><a class='srclink' href='../../src/nix/errno.rs.html#99' title='goto source code'>[src]</a></h4></div><h3 id='impl-ErrnoSentinel-for-i64' class='impl'><code class='in-band'>impl <a class="trait" href="../../nix/errno/trait.ErrnoSentinel.html" title="trait nix::errno::ErrnoSentinel">ErrnoSentinel</a> for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i64.html">i64</a></code><a href='#impl-ErrnoSentinel-for-i64' class='anchor'></a><a class='srclink' href='../../src/nix/errno.rs.html#102-104' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.sentinel-2' class="method hidden"><code id='sentinel.v-3'>fn <a href='#method.sentinel' class='fnname'>sentinel</a>() -> Self</code><a class='srclink' href='../../src/nix/errno.rs.html#103' title='goto source code'>[src]</a></h4></div><h3 id='impl-ErrnoSentinel-for-*mut%20c_void' class='impl'><code class='in-band'>impl <a class="trait" href="../../nix/errno/trait.ErrnoSentinel.html" title="trait nix::errno::ErrnoSentinel">ErrnoSentinel</a> for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.pointer.html">*mut </a><a class="enum" href="https://doc.rust-lang.org/nightly/core/ffi/enum.c_void.html" title="enum core::ffi::c_void">c_void</a></code><a href='#impl-ErrnoSentinel-for-*mut%20c_void' class='anchor'></a><a class='srclink' href='../../src/nix/errno.rs.html#106-108' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.sentinel-3' class="method hidden"><code id='sentinel.v-4'>fn <a href='#method.sentinel' class='fnname'>sentinel</a>() -> Self</code><a class='srclink' href='../../src/nix/errno.rs.html#107' title='goto source code'>[src]</a></h4></div><h3 id='impl-ErrnoSentinel-for-sighandler_t' class='impl'><code class='in-band'>impl <a class="trait" href="../../nix/errno/trait.ErrnoSentinel.html" title="trait nix::errno::ErrnoSentinel">ErrnoSentinel</a> for <a class="type" href="../../libc/unix/type.sighandler_t.html" title="type libc::unix::sighandler_t">sighandler_t</a></code><a href='#impl-ErrnoSentinel-for-sighandler_t' class='anchor'></a><a class='srclink' href='../../src/nix/errno.rs.html#110-112' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.sentinel-4' class="method hidden"><code id='sentinel.v-5'>fn <a href='#method.sentinel' class='fnname'>sentinel</a>() -> Self</code><a class='srclink' href='../../src/nix/errno.rs.html#111' title='goto source code'>[src]</a></h4></div><span class='loading-content'>Loading content...</span>
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