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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="Creates a new hard link on the filesystem."><title>hard_link in tokio::fs - Rust</title><script>if(window.location.protocol!=="file:")document.head.insertAdjacentHTML("beforeend","SourceSerif4-Regular-6b053e98.ttf.woff2,FiraSans-Italic-81dc35de.woff2,FiraSans-Regular-0fe48ade.woff2,FiraSans-MediumItalic-ccf7e434.woff2,FiraSans-Medium-e1aa3f0a.woff2,SourceCodePro-Regular-8badfe75.ttf.woff2,SourceCodePro-Semibold-aa29a496.ttf.woff2".split(",").map(f=>`<link rel="preload" as="font" type="font/woff2"href="../../static.files/${f}">`).join(""))</script><link rel="stylesheet" href="../../static.files/normalize-9960930a.css"><link rel="stylesheet" href="../../static.files/rustdoc-ca0dd0c4.css"><meta name="rustdoc-vars" data-root-path="../../" data-static-root-path="../../static.files/" data-current-crate="tokio" data-themes="" data-resource-suffix="" data-rustdoc-version="1.93.1 (01f6ddf75 2026-02-11) (Arch Linux rust 1:1.93.1-1)" data-channel="1.93.1" data-search-js="search-9e2438ea.js" data-stringdex-js="stringdex-a3946164.js" data-settings-js="settings-c38705f0.js" ><script src="../../static.files/storage-e2aeef58.js"></script><script defer src="sidebar-items.js"></script><script defer src="../../static.files/main-a410ff4d.js"></script><noscript><link rel="stylesheet" href="../../static.files/noscript-263c88ec.css"></noscript><link rel="alternate icon" type="image/png" href="../../static.files/favicon-32x32-eab170b8.png"><link rel="icon" type="image/svg+xml" href="../../static.files/favicon-044be391.svg"></head><body class="rustdoc fn"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><rustdoc-topbar><h2><a href="#">hard_link</a></h2></rustdoc-topbar><nav class="sidebar"><div class="sidebar-crate"><h2><a href="../../tokio/index.html">tokio</a><span class="version">1.49.0</span></h2></div><div class="sidebar-elems"><section id="rustdoc-toc"><h2 class="location"><a href="#">hard_<wbr>link</a></h2><h3><a href="#">Sections</a></h3><ul class="block top-toc"><li><a href="#platform-specific-behavior" title="Platform-specific behavior">Platform-specific behavior</a></li><li><a href="#errors" title="Errors">Errors</a></li><li><a href="#examples" title="Examples">Examples</a></li></ul></section><div id="rustdoc-modnav"><h2><a href="index.html">In tokio::<wbr>fs</a></h2></div></div></nav><div class="sidebar-resizer" title="Drag to resize sidebar"></div><main><div class="width-limiter"><section id="main-content" class="content"><div class="main-heading"><div class="rustdoc-breadcrumbs"><a href="../index.html">tokio</a>::<wbr><a href="index.html">fs</a></div><h1>Function <span class="fn">hard_<wbr>link</span> <button id="copy-path" title="Copy item path to clipboard">Copy item path</button></h1><rustdoc-toolbar></rustdoc-toolbar><span class="sub-heading"><a class="src" href="../../src/tokio/fs/hard_link.rs.html#39-44">Source</a> </span></div><pre class="rust item-decl"><code>pub async fn hard_link(
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original: impl <a class="trait" href="https://doc.rust-lang.org/1.93.1/core/convert/trait.AsRef.html" title="trait core::convert::AsRef">AsRef</a><<a class="struct" href="https://doc.rust-lang.org/1.93.1/std/path/struct.Path.html" title="struct std::path::Path">Path</a>>,
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link: impl <a class="trait" href="https://doc.rust-lang.org/1.93.1/core/convert/trait.AsRef.html" title="trait core::convert::AsRef">AsRef</a><<a class="struct" href="https://doc.rust-lang.org/1.93.1/std/path/struct.Path.html" title="struct std::path::Path">Path</a>>,
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) -> <a class="type" href="https://doc.rust-lang.org/1.93.1/std/io/error/type.Result.html" title="type std::io::error::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.unit.html">()</a>></code></pre><details class="toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><p>Creates a new hard link on the filesystem.</p>
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<p>This is an async version of <a href="https://doc.rust-lang.org/1.93.1/std/fs/fn.hard_link.html" title="fn std::fs::hard_link"><code>std::fs::hard_link</code></a>.</p>
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<p>The <code>link</code> path will be a link pointing to the <code>original</code> path. Note that systems
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often require these two paths to both be located on the same filesystem.</p>
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<h2 id="platform-specific-behavior"><a class="doc-anchor" href="#platform-specific-behavior">§</a>Platform-specific behavior</h2>
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<p>This function currently corresponds to the <code>link</code> function on Unix
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and the <code>CreateHardLink</code> function on Windows.
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Note that, this <a href="https://doc.rust-lang.org/std/io/index.html#platform-specific-behavior">may change in the future</a>.</p>
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<h2 id="errors"><a class="doc-anchor" href="#errors">§</a>Errors</h2>
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<p>This function will return an error in the following situations, but is not
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limited to just these cases:</p>
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<ul>
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<li>The <code>original</code> path is not a file or doesn’t exist.</li>
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</ul>
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<h2 id="examples"><a class="doc-anchor" href="#examples">§</a>Examples</h2>
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<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>tokio::fs;
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<span class="attr">#[tokio::main]
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</span><span class="kw">async fn </span>main() -> std::io::Result<()> {
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fs::hard_link(<span class="string">"a.txt"</span>, <span class="string">"b.txt"</span>).<span class="kw">await</span><span class="question-mark">?</span>; <span class="comment">// Hard link a.txt to b.txt
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</span><span class="prelude-val">Ok</span>(())
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}</code></pre></div></div></details></section></div></main></body></html> |