<!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 `MetadataExt` trait in crate `std`."><meta name="keywords" content="rust, rustlang, rust-lang, MetadataExt"><title>std::os::unix::fs::MetadataExt - 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><link rel="shortcut icon" href="https://doc.rust-lang.org/favicon.ico"></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='../../../../std/index.html'><img src='https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png' alt='logo' width='100'></a><p class='location'>Trait MetadataExt</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.dev">dev</a><a href="#tymethod.ino">ino</a><a href="#tymethod.mode">mode</a><a href="#tymethod.nlink">nlink</a><a href="#tymethod.uid">uid</a><a href="#tymethod.gid">gid</a><a href="#tymethod.rdev">rdev</a><a href="#tymethod.size">size</a><a href="#tymethod.atime">atime</a><a href="#tymethod.atime_nsec">atime_nsec</a><a href="#tymethod.mtime">mtime</a><a href="#tymethod.mtime_nsec">mtime_nsec</a><a href="#tymethod.ctime">ctime</a><a href="#tymethod.ctime_nsec">ctime_nsec</a><a href="#tymethod.blksize">blksize</a><a href="#tymethod.blocks">blocks</a></div><a class="sidebar-title" href="#implementors">Implementors</a></div><p class='location'><a href='../../../index.html'>std</a>::<wbr><a href='../../index.html'>os</a>::<wbr><a href='../index.html'>unix</a>::<wbr><a href='index.html'>fs</a></p><script>window.sidebarCurrent = {name: 'MetadataExt', 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"><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"><h1 class='fqn'><span class='in-band'>Trait <a href='../../../index.html'>std</a>::<wbr><a href='../../index.html'>os</a>::<wbr><a href='../index.html'>unix</a>::<wbr><a href='index.html'>fs</a>::<wbr><a class="trait" href=''>MetadataExt</a></span><span class='out-of-band'><span class='since' title='Stable since Rust version 1.1.0'>1.1.0</span><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/std/sys/unix/ext/fs.rs.html#257-536' title='goto source code'>[src]</a></span></h1><div class="docblock type-decl"><pre class='rust trait'>pub trait MetadataExt {
fn <a href='#tymethod.dev' class='fnname'>dev</a>(&self) -> <a class="primitive" href="../../../primitive.u64.html">u64</a>;
<div class='item-spacer'></div> fn <a href='#tymethod.ino' class='fnname'>ino</a>(&self) -> <a class="primitive" href="../../../primitive.u64.html">u64</a>;
<div class='item-spacer'></div> fn <a href='#tymethod.mode' class='fnname'>mode</a>(&self) -> <a class="primitive" href="../../../primitive.u32.html">u32</a>;
<div class='item-spacer'></div> fn <a href='#tymethod.nlink' class='fnname'>nlink</a>(&self) -> <a class="primitive" href="../../../primitive.u64.html">u64</a>;
<div class='item-spacer'></div> fn <a href='#tymethod.uid' class='fnname'>uid</a>(&self) -> <a class="primitive" href="../../../primitive.u32.html">u32</a>;
<div class='item-spacer'></div> fn <a href='#tymethod.gid' class='fnname'>gid</a>(&self) -> <a class="primitive" href="../../../primitive.u32.html">u32</a>;
<div class='item-spacer'></div> fn <a href='#tymethod.rdev' class='fnname'>rdev</a>(&self) -> <a class="primitive" href="../../../primitive.u64.html">u64</a>;
<div class='item-spacer'></div> fn <a href='#tymethod.size' class='fnname'>size</a>(&self) -> <a class="primitive" href="../../../primitive.u64.html">u64</a>;
<div class='item-spacer'></div> fn <a href='#tymethod.atime' class='fnname'>atime</a>(&self) -> <a class="primitive" href="../../../primitive.i64.html">i64</a>;
<div class='item-spacer'></div> fn <a href='#tymethod.atime_nsec' class='fnname'>atime_nsec</a>(&self) -> <a class="primitive" href="../../../primitive.i64.html">i64</a>;
<div class='item-spacer'></div> fn <a href='#tymethod.mtime' class='fnname'>mtime</a>(&self) -> <a class="primitive" href="../../../primitive.i64.html">i64</a>;
<div class='item-spacer'></div> fn <a href='#tymethod.mtime_nsec' class='fnname'>mtime_nsec</a>(&self) -> <a class="primitive" href="../../../primitive.i64.html">i64</a>;
<div class='item-spacer'></div> fn <a href='#tymethod.ctime' class='fnname'>ctime</a>(&self) -> <a class="primitive" href="../../../primitive.i64.html">i64</a>;
<div class='item-spacer'></div> fn <a href='#tymethod.ctime_nsec' class='fnname'>ctime_nsec</a>(&self) -> <a class="primitive" href="../../../primitive.i64.html">i64</a>;
<div class='item-spacer'></div> fn <a href='#tymethod.blksize' class='fnname'>blksize</a>(&self) -> <a class="primitive" href="../../../primitive.u64.html">u64</a>;
<div class='item-spacer'></div> fn <a href='#tymethod.blocks' class='fnname'>blocks</a>(&self) -> <a class="primitive" href="../../../primitive.u64.html">u64</a>;
}</pre></div><div class='stability'><div class='stab portability'>This is supported on <strong>Unix</strong> only.</div></div><div class='docblock'><p>Unix-specific extensions to <a href="../../../../std/fs/struct.Metadata.html"><code>fs::Metadata</code></a>.</p>
</div>
<h2 id='required-methods' class='small-section-header'>
Required Methods<a href='#required-methods' class='anchor'></a>
</h2>
<div class='methods'>
<h3 id='tymethod.dev' class='method'><span id='dev.v' class='invisible'><code>fn <a href='#tymethod.dev' class='fnname'>dev</a>(&self) -> <a class="primitive" href="../../../primitive.u64.html">u64</a></code></span></h3><div class='stability'><div class='stab portability'>This is supported on <strong>Unix</strong> only.</div></div><div class='docblock'><p>Returns the ID of the device containing the file.</p>
<h1 id="examples" class="section-header"><a href="#examples">Examples</a></h1>
<pre class="rust rust-example-rendered">
<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">fs</span>;
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">os</span>::<span class="ident">unix</span>::<span class="ident">fs</span>::<span class="ident">MetadataExt</span>;
<span class="kw">fn</span> <span class="ident">main</span>() <span class="op">-></span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op"><</span>()<span class="op">></span> {
<span class="kw">let</span> <span class="ident">meta</span> <span class="op">=</span> <span class="ident">fs</span>::<span class="ident">metadata</span>(<span class="string">"some_file"</span>)<span class="question-mark">?</span>;
<span class="kw">let</span> <span class="ident">dev_id</span> <span class="op">=</span> <span class="ident">meta</span>.<span class="ident">dev</span>();
<span class="prelude-val">Ok</span>(())
}<a class="test-arrow" target="_blank" href="https://play.rust-lang.org/?code=%23!%5Ballow(unused)%5D%0Ause%20std%3A%3Aio%3B%0Ause%20std%3A%3Afs%3B%0Ause%20std%3A%3Aos%3A%3Aunix%3A%3Afs%3A%3AMetadataExt%3B%0A%0Afn%20main()%20-%3E%20io%3A%3AResult%3C()%3E%20%7B%0A%20%20%20%20let%20meta%20%3D%20fs%3A%3Ametadata(%22some_file%22)%3F%3B%0A%20%20%20%20let%20dev_id%20%3D%20meta.dev()%3B%0A%20%20%20%20Ok(())%0A%7D">Run</a></pre>
</div><h3 id='tymethod.ino' class='method'><span id='ino.v' class='invisible'><code>fn <a href='#tymethod.ino' class='fnname'>ino</a>(&self) -> <a class="primitive" href="../../../primitive.u64.html">u64</a></code></span></h3><div class='stability'><div class='stab portability'>This is supported on <strong>Unix</strong> only.</div></div><div class='docblock'><p>Returns the inode number.</p>
<h1 id="examples-1" class="section-header"><a href="#examples-1">Examples</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">fs</span>;
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">os</span>::<span class="ident">unix</span>::<span class="ident">fs</span>::<span class="ident">MetadataExt</span>;
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">io</span>;
<span class="kw">fn</span> <span class="ident">main</span>() <span class="op">-></span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op"><</span>()<span class="op">></span> {
<span class="kw">let</span> <span class="ident">meta</span> <span class="op">=</span> <span class="ident">fs</span>::<span class="ident">metadata</span>(<span class="string">"some_file"</span>)<span class="question-mark">?</span>;
<span class="kw">let</span> <span class="ident">inode</span> <span class="op">=</span> <span class="ident">meta</span>.<span class="ident">ino</span>();
<span class="prelude-val">Ok</span>(())
}<a class="test-arrow" target="_blank" href="https://play.rust-lang.org/?code=%23!%5Ballow(unused)%5D%0Ause%20std%3A%3Afs%3B%0Ause%20std%3A%3Aos%3A%3Aunix%3A%3Afs%3A%3AMetadataExt%3B%0Ause%20std%3A%3Aio%3B%0A%0Afn%20main()%20-%3E%20io%3A%3AResult%3C()%3E%20%7B%0A%20%20%20%20let%20meta%20%3D%20fs%3A%3Ametadata(%22some_file%22)%3F%3B%0A%20%20%20%20let%20inode%20%3D%20meta.ino()%3B%0A%20%20%20%20Ok(())%0A%7D">Run</a></pre>
</div><h3 id='tymethod.mode' class='method'><span id='mode.v' class='invisible'><code>fn <a href='#tymethod.mode' class='fnname'>mode</a>(&self) -> <a class="primitive" href="../../../primitive.u32.html">u32</a></code></span></h3><div class='stability'><div class='stab portability'>This is supported on <strong>Unix</strong> only.</div></div><div class='docblock'><p>Returns the rights applied to this file.</p>
<h1 id="examples-2" class="section-header"><a href="#examples-2">Examples</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">fs</span>;
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">os</span>::<span class="ident">unix</span>::<span class="ident">fs</span>::<span class="ident">MetadataExt</span>;
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">io</span>;
<span class="kw">fn</span> <span class="ident">main</span>() <span class="op">-></span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op"><</span>()<span class="op">></span> {
<span class="kw">let</span> <span class="ident">meta</span> <span class="op">=</span> <span class="ident">fs</span>::<span class="ident">metadata</span>(<span class="string">"some_file"</span>)<span class="question-mark">?</span>;
<span class="kw">let</span> <span class="ident">mode</span> <span class="op">=</span> <span class="ident">meta</span>.<span class="ident">mode</span>();
<span class="kw">let</span> <span class="ident">user_has_write_access</span> <span class="op">=</span> <span class="ident">mode</span> <span class="op">&</span> <span class="number">0o200</span>;
<span class="kw">let</span> <span class="ident">user_has_read_write_access</span> <span class="op">=</span> <span class="ident">mode</span> <span class="op">&</span> <span class="number">0o600</span>;
<span class="kw">let</span> <span class="ident">group_has_read_access</span> <span class="op">=</span> <span class="ident">mode</span> <span class="op">&</span> <span class="number">0o040</span>;
<span class="kw">let</span> <span class="ident">others_have_exec_access</span> <span class="op">=</span> <span class="ident">mode</span> <span class="op">&</span> <span class="number">0o001</span>;
<span class="prelude-val">Ok</span>(())
}<a class="test-arrow" target="_blank" href="https://play.rust-lang.org/?code=%23!%5Ballow(unused)%5D%0Ause%20std%3A%3Afs%3B%0Ause%20std%3A%3Aos%3A%3Aunix%3A%3Afs%3A%3AMetadataExt%3B%0Ause%20std%3A%3Aio%3B%0A%0Afn%20main()%20-%3E%20io%3A%3AResult%3C()%3E%20%7B%0A%20%20%20%20let%20meta%20%3D%20fs%3A%3Ametadata(%22some_file%22)%3F%3B%0A%20%20%20%20let%20mode%20%3D%20meta.mode()%3B%0A%20%20%20%20let%20user_has_write_access%20%20%20%20%20%20%3D%20mode%20%26%200o200%3B%0A%20%20%20%20let%20user_has_read_write_access%20%3D%20mode%20%26%200o600%3B%0A%20%20%20%20let%20group_has_read_access%20%20%20%20%20%20%3D%20mode%20%26%200o040%3B%0A%20%20%20%20let%20others_have_exec_access%20%20%20%20%3D%20mode%20%26%200o001%3B%0A%20%20%20%20Ok(())%0A%7D">Run</a></pre>
</div><h3 id='tymethod.nlink' class='method'><span id='nlink.v' class='invisible'><code>fn <a href='#tymethod.nlink' class='fnname'>nlink</a>(&self) -> <a class="primitive" href="../../../primitive.u64.html">u64</a></code></span></h3><div class='stability'><div class='stab portability'>This is supported on <strong>Unix</strong> only.</div></div><div class='docblock'><p>Returns the number of hard links pointing to this file.</p>
<h1 id="examples-3" class="section-header"><a href="#examples-3">Examples</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">fs</span>;
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">os</span>::<span class="ident">unix</span>::<span class="ident">fs</span>::<span class="ident">MetadataExt</span>;
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">io</span>;
<span class="kw">fn</span> <span class="ident">main</span>() <span class="op">-></span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op"><</span>()<span class="op">></span> {
<span class="kw">let</span> <span class="ident">meta</span> <span class="op">=</span> <span class="ident">fs</span>::<span class="ident">metadata</span>(<span class="string">"some_file"</span>)<span class="question-mark">?</span>;
<span class="kw">let</span> <span class="ident">nb_hard_links</span> <span class="op">=</span> <span class="ident">meta</span>.<span class="ident">nlink</span>();
<span class="prelude-val">Ok</span>(())
}<a class="test-arrow" target="_blank" href="https://play.rust-lang.org/?code=%23!%5Ballow(unused)%5D%0Ause%20std%3A%3Afs%3B%0Ause%20std%3A%3Aos%3A%3Aunix%3A%3Afs%3A%3AMetadataExt%3B%0A%20use%20std%3A%3Aio%3B%0A%0Afn%20main()%20-%3E%20io%3A%3AResult%3C()%3E%20%7B%0A%20%20%20%20let%20meta%20%3D%20fs%3A%3Ametadata(%22some_file%22)%3F%3B%0A%20%20%20%20let%20nb_hard_links%20%3D%20meta.nlink()%3B%0A%20%20%20%20Ok(())%0A%7D">Run</a></pre>
</div><h3 id='tymethod.uid' class='method'><span id='uid.v' class='invisible'><code>fn <a href='#tymethod.uid' class='fnname'>uid</a>(&self) -> <a class="primitive" href="../../../primitive.u32.html">u32</a></code></span></h3><div class='stability'><div class='stab portability'>This is supported on <strong>Unix</strong> only.</div></div><div class='docblock'><p>Returns the user ID of the owner of this file.</p>
<h1 id="examples-4" class="section-header"><a href="#examples-4">Examples</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">fs</span>;
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">os</span>::<span class="ident">unix</span>::<span class="ident">fs</span>::<span class="ident">MetadataExt</span>;
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">io</span>;
<span class="kw">fn</span> <span class="ident">main</span>() <span class="op">-></span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op"><</span>()<span class="op">></span> {
<span class="kw">let</span> <span class="ident">meta</span> <span class="op">=</span> <span class="ident">fs</span>::<span class="ident">metadata</span>(<span class="string">"some_file"</span>)<span class="question-mark">?</span>;
<span class="kw">let</span> <span class="ident">user_id</span> <span class="op">=</span> <span class="ident">meta</span>.<span class="ident">uid</span>();
<span class="prelude-val">Ok</span>(())
}<a class="test-arrow" target="_blank" href="https://play.rust-lang.org/?code=%23!%5Ballow(unused)%5D%0Ause%20std%3A%3Afs%3B%0Ause%20std%3A%3Aos%3A%3Aunix%3A%3Afs%3A%3AMetadataExt%3B%0Ause%20std%3A%3Aio%3B%0A%0Afn%20main()%20-%3E%20io%3A%3AResult%3C()%3E%20%7B%0A%20%20%20%20let%20meta%20%3D%20fs%3A%3Ametadata(%22some_file%22)%3F%3B%0A%20%20%20%20let%20user_id%20%3D%20meta.uid()%3B%0A%20%20%20%20Ok(())%0A%7D">Run</a></pre>
</div><h3 id='tymethod.gid' class='method'><span id='gid.v' class='invisible'><code>fn <a href='#tymethod.gid' class='fnname'>gid</a>(&self) -> <a class="primitive" href="../../../primitive.u32.html">u32</a></code></span></h3><div class='stability'><div class='stab portability'>This is supported on <strong>Unix</strong> only.</div></div><div class='docblock'><p>Returns the group ID of the owner of this file.</p>
<h1 id="examples-5" class="section-header"><a href="#examples-5">Examples</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">fs</span>;
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">os</span>::<span class="ident">unix</span>::<span class="ident">fs</span>::<span class="ident">MetadataExt</span>;
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">io</span>;
<span class="kw">fn</span> <span class="ident">main</span>() <span class="op">-></span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op"><</span>()<span class="op">></span> {
<span class="kw">let</span> <span class="ident">meta</span> <span class="op">=</span> <span class="ident">fs</span>::<span class="ident">metadata</span>(<span class="string">"some_file"</span>)<span class="question-mark">?</span>;
<span class="kw">let</span> <span class="ident">group_id</span> <span class="op">=</span> <span class="ident">meta</span>.<span class="ident">gid</span>();
<span class="prelude-val">Ok</span>(())
}<a class="test-arrow" target="_blank" href="https://play.rust-lang.org/?code=%23!%5Ballow(unused)%5D%0Ause%20std%3A%3Afs%3B%0Ause%20std%3A%3Aos%3A%3Aunix%3A%3Afs%3A%3AMetadataExt%3B%0Ause%20std%3A%3Aio%3B%0A%0Afn%20main()%20-%3E%20io%3A%3AResult%3C()%3E%20%7B%0A%20%20%20%20let%20meta%20%3D%20fs%3A%3Ametadata(%22some_file%22)%3F%3B%0A%20%20%20%20let%20group_id%20%3D%20meta.gid()%3B%0A%20%20%20%20Ok(())%0A%7D">Run</a></pre>
</div><h3 id='tymethod.rdev' class='method'><span id='rdev.v' class='invisible'><code>fn <a href='#tymethod.rdev' class='fnname'>rdev</a>(&self) -> <a class="primitive" href="../../../primitive.u64.html">u64</a></code></span></h3><div class='stability'><div class='stab portability'>This is supported on <strong>Unix</strong> only.</div></div><div class='docblock'><p>Returns the device ID of this file (if it is a special one).</p>
<h1 id="examples-6" class="section-header"><a href="#examples-6">Examples</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">fs</span>;
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">os</span>::<span class="ident">unix</span>::<span class="ident">fs</span>::<span class="ident">MetadataExt</span>;
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">io</span>;
<span class="kw">fn</span> <span class="ident">main</span>() <span class="op">-></span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op"><</span>()<span class="op">></span> {
<span class="kw">let</span> <span class="ident">meta</span> <span class="op">=</span> <span class="ident">fs</span>::<span class="ident">metadata</span>(<span class="string">"some_file"</span>)<span class="question-mark">?</span>;
<span class="kw">let</span> <span class="ident">device_id</span> <span class="op">=</span> <span class="ident">meta</span>.<span class="ident">rdev</span>();
<span class="prelude-val">Ok</span>(())
}<a class="test-arrow" target="_blank" href="https://play.rust-lang.org/?code=%23!%5Ballow(unused)%5D%0Ause%20std%3A%3Afs%3B%0Ause%20std%3A%3Aos%3A%3Aunix%3A%3Afs%3A%3AMetadataExt%3B%0Ause%20std%3A%3Aio%3B%0A%0Afn%20main()%20-%3E%20io%3A%3AResult%3C()%3E%20%7B%0A%20%20%20%20let%20meta%20%3D%20fs%3A%3Ametadata(%22some_file%22)%3F%3B%0A%20%20%20%20let%20device_id%20%3D%20meta.rdev()%3B%0A%20%20%20%20Ok(())%0A%7D">Run</a></pre>
</div><h3 id='tymethod.size' class='method'><span id='size.v' class='invisible'><code>fn <a href='#tymethod.size' class='fnname'>size</a>(&self) -> <a class="primitive" href="../../../primitive.u64.html">u64</a></code></span></h3><div class='stability'><div class='stab portability'>This is supported on <strong>Unix</strong> only.</div></div><div class='docblock'><p>Returns the total size of this file in bytes.</p>
<h1 id="examples-7" class="section-header"><a href="#examples-7">Examples</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">fs</span>;
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">os</span>::<span class="ident">unix</span>::<span class="ident">fs</span>::<span class="ident">MetadataExt</span>;
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">io</span>;
<span class="kw">fn</span> <span class="ident">main</span>() <span class="op">-></span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op"><</span>()<span class="op">></span> {
<span class="kw">let</span> <span class="ident">meta</span> <span class="op">=</span> <span class="ident">fs</span>::<span class="ident">metadata</span>(<span class="string">"some_file"</span>)<span class="question-mark">?</span>;
<span class="kw">let</span> <span class="ident">file_size</span> <span class="op">=</span> <span class="ident">meta</span>.<span class="ident">size</span>();
<span class="prelude-val">Ok</span>(())
}<a class="test-arrow" target="_blank" href="https://play.rust-lang.org/?code=%23!%5Ballow(unused)%5D%0Ause%20std%3A%3Afs%3B%0Ause%20std%3A%3Aos%3A%3Aunix%3A%3Afs%3A%3AMetadataExt%3B%0Ause%20std%3A%3Aio%3B%0A%0Afn%20main()%20-%3E%20io%3A%3AResult%3C()%3E%20%7B%0A%20%20%20%20let%20meta%20%3D%20fs%3A%3Ametadata(%22some_file%22)%3F%3B%0A%20%20%20%20let%20file_size%20%3D%20meta.size()%3B%0A%20%20%20%20Ok(())%0A%7D">Run</a></pre>
</div><h3 id='tymethod.atime' class='method'><span id='atime.v' class='invisible'><code>fn <a href='#tymethod.atime' class='fnname'>atime</a>(&self) -> <a class="primitive" href="../../../primitive.i64.html">i64</a></code></span></h3><div class='stability'><div class='stab portability'>This is supported on <strong>Unix</strong> only.</div></div><div class='docblock'><p>Returns the time of the last access to the file.</p>
<h1 id="examples-8" class="section-header"><a href="#examples-8">Examples</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">fs</span>;
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">os</span>::<span class="ident">unix</span>::<span class="ident">fs</span>::<span class="ident">MetadataExt</span>;
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">io</span>;
<span class="kw">fn</span> <span class="ident">main</span>() <span class="op">-></span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op"><</span>()<span class="op">></span> {
<span class="kw">let</span> <span class="ident">meta</span> <span class="op">=</span> <span class="ident">fs</span>::<span class="ident">metadata</span>(<span class="string">"some_file"</span>)<span class="question-mark">?</span>;
<span class="kw">let</span> <span class="ident">last_access_time</span> <span class="op">=</span> <span class="ident">meta</span>.<span class="ident">atime</span>();
<span class="prelude-val">Ok</span>(())
}<a class="test-arrow" target="_blank" href="https://play.rust-lang.org/?code=%23!%5Ballow(unused)%5D%0Ause%20std%3A%3Afs%3B%0Ause%20std%3A%3Aos%3A%3Aunix%3A%3Afs%3A%3AMetadataExt%3B%0Ause%20std%3A%3Aio%3B%0A%0Afn%20main()%20-%3E%20io%3A%3AResult%3C()%3E%20%7B%0A%20%20%20%20let%20meta%20%3D%20fs%3A%3Ametadata(%22some_file%22)%3F%3B%0A%20%20%20%20let%20last_access_time%20%3D%20meta.atime()%3B%0A%20%20%20%20Ok(())%0A%7D">Run</a></pre>
</div><h3 id='tymethod.atime_nsec' class='method'><span id='atime_nsec.v' class='invisible'><code>fn <a href='#tymethod.atime_nsec' class='fnname'>atime_nsec</a>(&self) -> <a class="primitive" href="../../../primitive.i64.html">i64</a></code></span></h3><div class='stability'><div class='stab portability'>This is supported on <strong>Unix</strong> only.</div></div><div class='docblock'><p>Returns the time of the last access to the file in nanoseconds.</p>
<h1 id="examples-9" class="section-header"><a href="#examples-9">Examples</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">fs</span>;
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">os</span>::<span class="ident">unix</span>::<span class="ident">fs</span>::<span class="ident">MetadataExt</span>;
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">io</span>;
<span class="kw">fn</span> <span class="ident">main</span>() <span class="op">-></span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op"><</span>()<span class="op">></span> {
<span class="kw">let</span> <span class="ident">meta</span> <span class="op">=</span> <span class="ident">fs</span>::<span class="ident">metadata</span>(<span class="string">"some_file"</span>)<span class="question-mark">?</span>;
<span class="kw">let</span> <span class="ident">nano_last_access_time</span> <span class="op">=</span> <span class="ident">meta</span>.<span class="ident">atime_nsec</span>();
<span class="prelude-val">Ok</span>(())
}<a class="test-arrow" target="_blank" href="https://play.rust-lang.org/?code=%23!%5Ballow(unused)%5D%0Ause%20std%3A%3Afs%3B%0Ause%20std%3A%3Aos%3A%3Aunix%3A%3Afs%3A%3AMetadataExt%3B%0Ause%20std%3A%3Aio%3B%0A%0Afn%20main()%20-%3E%20io%3A%3AResult%3C()%3E%20%7B%0A%20%20%20%20let%20meta%20%3D%20fs%3A%3Ametadata(%22some_file%22)%3F%3B%0A%20%20%20%20let%20nano_last_access_time%20%3D%20meta.atime_nsec()%3B%0A%20%20%20%20Ok(())%0A%7D">Run</a></pre>
</div><h3 id='tymethod.mtime' class='method'><span id='mtime.v' class='invisible'><code>fn <a href='#tymethod.mtime' class='fnname'>mtime</a>(&self) -> <a class="primitive" href="../../../primitive.i64.html">i64</a></code></span></h3><div class='stability'><div class='stab portability'>This is supported on <strong>Unix</strong> only.</div></div><div class='docblock'><p>Returns the time of the last modification of the file.</p>
<h1 id="examples-10" class="section-header"><a href="#examples-10">Examples</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">fs</span>;
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">os</span>::<span class="ident">unix</span>::<span class="ident">fs</span>::<span class="ident">MetadataExt</span>;
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">io</span>;
<span class="kw">fn</span> <span class="ident">main</span>() <span class="op">-></span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op"><</span>()<span class="op">></span> {
<span class="kw">let</span> <span class="ident">meta</span> <span class="op">=</span> <span class="ident">fs</span>::<span class="ident">metadata</span>(<span class="string">"some_file"</span>)<span class="question-mark">?</span>;
<span class="kw">let</span> <span class="ident">last_modification_time</span> <span class="op">=</span> <span class="ident">meta</span>.<span class="ident">mtime</span>();
<span class="prelude-val">Ok</span>(())
}<a class="test-arrow" target="_blank" href="https://play.rust-lang.org/?code=%23!%5Ballow(unused)%5D%0Ause%20std%3A%3Afs%3B%0Ause%20std%3A%3Aos%3A%3Aunix%3A%3Afs%3A%3AMetadataExt%3B%0Ause%20std%3A%3Aio%3B%0A%0Afn%20main()%20-%3E%20io%3A%3AResult%3C()%3E%20%7B%0A%20%20%20%20let%20meta%20%3D%20fs%3A%3Ametadata(%22some_file%22)%3F%3B%0A%20%20%20%20let%20last_modification_time%20%3D%20meta.mtime()%3B%0A%20%20%20%20Ok(())%0A%7D">Run</a></pre>
</div><h3 id='tymethod.mtime_nsec' class='method'><span id='mtime_nsec.v' class='invisible'><code>fn <a href='#tymethod.mtime_nsec' class='fnname'>mtime_nsec</a>(&self) -> <a class="primitive" href="../../../primitive.i64.html">i64</a></code></span></h3><div class='stability'><div class='stab portability'>This is supported on <strong>Unix</strong> only.</div></div><div class='docblock'><p>Returns the time of the last modification of the file in nanoseconds.</p>
<h1 id="examples-11" class="section-header"><a href="#examples-11">Examples</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">fs</span>;
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">os</span>::<span class="ident">unix</span>::<span class="ident">fs</span>::<span class="ident">MetadataExt</span>;
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">io</span>;
<span class="kw">fn</span> <span class="ident">main</span>() <span class="op">-></span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op"><</span>()<span class="op">></span> {
<span class="kw">let</span> <span class="ident">meta</span> <span class="op">=</span> <span class="ident">fs</span>::<span class="ident">metadata</span>(<span class="string">"some_file"</span>)<span class="question-mark">?</span>;
<span class="kw">let</span> <span class="ident">nano_last_modification_time</span> <span class="op">=</span> <span class="ident">meta</span>.<span class="ident">mtime_nsec</span>();
<span class="prelude-val">Ok</span>(())
}<a class="test-arrow" target="_blank" href="https://play.rust-lang.org/?code=%23!%5Ballow(unused)%5D%0Ause%20std%3A%3Afs%3B%0Ause%20std%3A%3Aos%3A%3Aunix%3A%3Afs%3A%3AMetadataExt%3B%0Ause%20std%3A%3Aio%3B%0A%0Afn%20main()%20-%3E%20io%3A%3AResult%3C()%3E%20%7B%0A%20%20%20%20let%20meta%20%3D%20fs%3A%3Ametadata(%22some_file%22)%3F%3B%0A%20%20%20%20let%20nano_last_modification_time%20%3D%20meta.mtime_nsec()%3B%0A%20%20%20%20Ok(())%0A%7D">Run</a></pre>
</div><h3 id='tymethod.ctime' class='method'><span id='ctime.v' class='invisible'><code>fn <a href='#tymethod.ctime' class='fnname'>ctime</a>(&self) -> <a class="primitive" href="../../../primitive.i64.html">i64</a></code></span></h3><div class='stability'><div class='stab portability'>This is supported on <strong>Unix</strong> only.</div></div><div class='docblock'><p>Returns the time of the last status change of the file.</p>
<h1 id="examples-12" class="section-header"><a href="#examples-12">Examples</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">fs</span>;
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">os</span>::<span class="ident">unix</span>::<span class="ident">fs</span>::<span class="ident">MetadataExt</span>;
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">io</span>;
<span class="kw">fn</span> <span class="ident">main</span>() <span class="op">-></span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op"><</span>()<span class="op">></span> {
<span class="kw">let</span> <span class="ident">meta</span> <span class="op">=</span> <span class="ident">fs</span>::<span class="ident">metadata</span>(<span class="string">"some_file"</span>)<span class="question-mark">?</span>;
<span class="kw">let</span> <span class="ident">last_status_change_time</span> <span class="op">=</span> <span class="ident">meta</span>.<span class="ident">ctime</span>();
<span class="prelude-val">Ok</span>(())
}<a class="test-arrow" target="_blank" href="https://play.rust-lang.org/?code=%23!%5Ballow(unused)%5D%0Ause%20std%3A%3Afs%3B%0Ause%20std%3A%3Aos%3A%3Aunix%3A%3Afs%3A%3AMetadataExt%3B%0Ause%20std%3A%3Aio%3B%0A%0Afn%20main()%20-%3E%20io%3A%3AResult%3C()%3E%20%7B%0A%20%20%20%20let%20meta%20%3D%20fs%3A%3Ametadata(%22some_file%22)%3F%3B%0A%20%20%20%20let%20last_status_change_time%20%3D%20meta.ctime()%3B%0A%20%20%20%20Ok(())%0A%7D">Run</a></pre>
</div><h3 id='tymethod.ctime_nsec' class='method'><span id='ctime_nsec.v' class='invisible'><code>fn <a href='#tymethod.ctime_nsec' class='fnname'>ctime_nsec</a>(&self) -> <a class="primitive" href="../../../primitive.i64.html">i64</a></code></span></h3><div class='stability'><div class='stab portability'>This is supported on <strong>Unix</strong> only.</div></div><div class='docblock'><p>Returns the time of the last status change of the file in nanoseconds.</p>
<h1 id="examples-13" class="section-header"><a href="#examples-13">Examples</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">fs</span>;
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">os</span>::<span class="ident">unix</span>::<span class="ident">fs</span>::<span class="ident">MetadataExt</span>;
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">io</span>;
<span class="kw">fn</span> <span class="ident">main</span>() <span class="op">-></span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op"><</span>()<span class="op">></span> {
<span class="kw">let</span> <span class="ident">meta</span> <span class="op">=</span> <span class="ident">fs</span>::<span class="ident">metadata</span>(<span class="string">"some_file"</span>)<span class="question-mark">?</span>;
<span class="kw">let</span> <span class="ident">nano_last_status_change_time</span> <span class="op">=</span> <span class="ident">meta</span>.<span class="ident">ctime_nsec</span>();
<span class="prelude-val">Ok</span>(())
}<a class="test-arrow" target="_blank" href="https://play.rust-lang.org/?code=%23!%5Ballow(unused)%5D%0Ause%20std%3A%3Afs%3B%0Ause%20std%3A%3Aos%3A%3Aunix%3A%3Afs%3A%3AMetadataExt%3B%0Ause%20std%3A%3Aio%3B%0A%0Afn%20main()%20-%3E%20io%3A%3AResult%3C()%3E%20%7B%0A%20%20%20%20let%20meta%20%3D%20fs%3A%3Ametadata(%22some_file%22)%3F%3B%0A%20%20%20%20let%20nano_last_status_change_time%20%3D%20meta.ctime_nsec()%3B%0A%20%20%20%20Ok(())%0A%7D">Run</a></pre>
</div><h3 id='tymethod.blksize' class='method'><span id='blksize.v' class='invisible'><code>fn <a href='#tymethod.blksize' class='fnname'>blksize</a>(&self) -> <a class="primitive" href="../../../primitive.u64.html">u64</a></code></span></h3><div class='stability'><div class='stab portability'>This is supported on <strong>Unix</strong> only.</div></div><div class='docblock'><p>Returns the blocksize for filesystem I/O.</p>
<h1 id="examples-14" class="section-header"><a href="#examples-14">Examples</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">fs</span>;
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">os</span>::<span class="ident">unix</span>::<span class="ident">fs</span>::<span class="ident">MetadataExt</span>;
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">io</span>;
<span class="kw">fn</span> <span class="ident">main</span>() <span class="op">-></span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op"><</span>()<span class="op">></span> {
<span class="kw">let</span> <span class="ident">meta</span> <span class="op">=</span> <span class="ident">fs</span>::<span class="ident">metadata</span>(<span class="string">"some_file"</span>)<span class="question-mark">?</span>;
<span class="kw">let</span> <span class="ident">blocksize</span> <span class="op">=</span> <span class="ident">meta</span>.<span class="ident">blksize</span>();
<span class="prelude-val">Ok</span>(())
}<a class="test-arrow" target="_blank" href="https://play.rust-lang.org/?code=%23!%5Ballow(unused)%5D%0Ause%20std%3A%3Afs%3B%0Ause%20std%3A%3Aos%3A%3Aunix%3A%3Afs%3A%3AMetadataExt%3B%0Ause%20std%3A%3Aio%3B%0A%0Afn%20main()%20-%3E%20io%3A%3AResult%3C()%3E%20%7B%0A%20%20%20%20let%20meta%20%3D%20fs%3A%3Ametadata(%22some_file%22)%3F%3B%0A%20%20%20%20let%20blocksize%20%3D%20meta.blksize()%3B%0A%20%20%20%20Ok(())%0A%7D">Run</a></pre>
</div><h3 id='tymethod.blocks' class='method'><span id='blocks.v' class='invisible'><code>fn <a href='#tymethod.blocks' class='fnname'>blocks</a>(&self) -> <a class="primitive" href="../../../primitive.u64.html">u64</a></code></span></h3><div class='stability'><div class='stab portability'>This is supported on <strong>Unix</strong> only.</div></div><div class='docblock'><p>Returns the number of blocks allocated to the file, in 512-byte units.</p>
<p>Please note that this may be smaller than <code>st_size / 512</code> when the file has holes.</p>
<h1 id="examples-15" class="section-header"><a href="#examples-15">Examples</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">fs</span>;
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">os</span>::<span class="ident">unix</span>::<span class="ident">fs</span>::<span class="ident">MetadataExt</span>;
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">io</span>;
<span class="kw">fn</span> <span class="ident">main</span>() <span class="op">-></span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op"><</span>()<span class="op">></span> {
<span class="kw">let</span> <span class="ident">meta</span> <span class="op">=</span> <span class="ident">fs</span>::<span class="ident">metadata</span>(<span class="string">"some_file"</span>)<span class="question-mark">?</span>;
<span class="kw">let</span> <span class="ident">blocks</span> <span class="op">=</span> <span class="ident">meta</span>.<span class="ident">blocks</span>();
<span class="prelude-val">Ok</span>(())
}<a class="test-arrow" target="_blank" href="https://play.rust-lang.org/?code=%23!%5Ballow(unused)%5D%0Ause%20std%3A%3Afs%3B%0Ause%20std%3A%3Aos%3A%3Aunix%3A%3Afs%3A%3AMetadataExt%3B%0Ause%20std%3A%3Aio%3B%0A%0Afn%20main()%20-%3E%20io%3A%3AResult%3C()%3E%20%7B%0A%20%20%20%20let%20meta%20%3D%20fs%3A%3Ametadata(%22some_file%22)%3F%3B%0A%20%20%20%20let%20blocks%20%3D%20meta.blocks()%3B%0A%20%20%20%20Ok(())%0A%7D">Run</a></pre>
</div></div>
<h2 id='implementors' class='small-section-header'>
Implementors<a href='#implementors' class='anchor'></a>
</h2>
<ul class='item-list' id='implementors-list'>
<li><table class='table-display'><tbody><tr><td><code>impl MetadataExt for <a class="struct" href="../../../../std/fs/struct.Metadata.html" title="struct std::fs::Metadata">Metadata</a></code><td><div class='out-of-band'><a class='srclink' href='../../../../src/std/sys/unix/ext/fs.rs.html#539-556' title='goto source code'>[src]</a></div></td></tr></tbody></table></li>
</ul><script type="text/javascript">window.inlined_types=new Set([]);</script><script type="text/javascript" async
src="../../../../implementors/std/os/unix/fs/trait.MetadataExt.js">
</script></section><section id="search" class="content hidden"></section><section class="footer"></section><aside id="help" class="hidden"><div><h1 class="hidden">Help</h1><div class="shortcuts"><h2>Keyboard Shortcuts</h2><dl><dt><kbd>?</kbd></dt><dd>Show this help dialog</dd><dt><kbd>S</kbd></dt><dd>Focus the search field</dd><dt><kbd>↑</kbd></dt><dd>Move up in search results</dd><dt><kbd>↓</kbd></dt><dd>Move down in search results</dd><dt><kbd>↹</kbd></dt><dd>Switch tab</dd><dt><kbd>⏎</kbd></dt><dd>Go to active search result</dd><dt><kbd>+</kbd></dt><dd>Expand all sections</dd><dt><kbd>-</kbd></dt><dd>Collapse all sections</dd></dl></div><div class="infos"><h2>Search Tricks</h2><p>Prefix searches with a type followed by a colon (e.g. <code>fn:</code>) to restrict the search to a given type.</p><p>Accepted types are: <code>fn</code>, <code>mod</code>, <code>struct</code>, <code>enum</code>, <code>trait</code>, <code>type</code>, <code>macro</code>, and <code>const</code>.</p><p>Search functions by type signature (e.g. <code>vec -> usize</code> or <code>* -> vec</code>)</p><p>Search multiple things at once by splitting your query with comma (e.g. <code>str,u8</code> or <code>String,struct:Vec,test</code>)</p></div></div></aside><script>window.rootPath = "../../../../";window.currentCrate = "std";</script><script src="../../../../aliases.js"></script><script src="../../../../main.js"></script><script defer src="../../../../search-index.js"></script></body></html>
distrib
>
Mageia
>
6
>
armv7hl
>
media
>
core-updates
>
by-pkgid
>
4e2dbb669434a7691662cb2f0ad38972
>
files
>
13944
