<!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/process.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>process.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">☰</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 2015 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 <LICENSE-APACHE or</span>
<span class="comment">// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license</span>
<span class="comment">// <LICENSE-MIT or http://opensource.org/licenses/MIT>, 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="doccomment">//! A module for working with processes.</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! This module is mostly concerned with spawning and interacting with child</span>
<span class="doccomment">//! processes, but it also provides [`abort`] and [`exit`] for terminating the</span>
<span class="doccomment">//! current process.</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! # Spawning a process</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! The [`Command`] struct is used to configure and spawn processes:</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! ```</span>
<span class="doccomment">//! use std::process::Command;</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! let output = Command::new("echo")</span>
<span class="doccomment">//! .arg("Hello world")</span>
<span class="doccomment">//! .output()</span>
<span class="doccomment">//! .expect("Failed to execute command");</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! assert_eq!(b"Hello world\n", output.stdout.as_slice());</span>
<span class="doccomment">//! ```</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! Several methods on [`Command`], such as [`spawn`] or [`output`], can be used</span>
<span class="doccomment">//! to spawn a process. In particular, [`output`] spawns the child process and</span>
<span class="doccomment">//! waits until the process terminates, while [`spawn`] will return a [`Child`]</span>
<span class="doccomment">//! that represents the spawned child process.</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! # Handling I/O</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! The [`stdout`], [`stdin`], and [`stderr`] of a child process can be</span>
<span class="doccomment">//! configured by passing an [`Stdio`] to the corresponding method on</span>
<span class="doccomment">//! [`Command`]. Once spawned, they can be accessed from the [`Child`]. For</span>
<span class="doccomment">//! example, piping output from one command into another command can be done</span>
<span class="doccomment">//! like so:</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! ```no_run</span>
<span class="doccomment">//! use std::process::{Command, Stdio};</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! // stdout must be configured with `Stdio::piped` in order to use</span>
<span class="doccomment">//! // `echo_child.stdout`</span>
<span class="doccomment">//! let echo_child = Command::new("echo")</span>
<span class="doccomment">//! .arg("Oh no, a tpyo!")</span>
<span class="doccomment">//! .stdout(Stdio::piped())</span>
<span class="doccomment">//! .spawn()</span>
<span class="doccomment">//! .expect("Failed to start echo process");</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! // Note that `echo_child` is moved here, but we won't be needing</span>
<span class="doccomment">//! // `echo_child` anymore</span>
<span class="doccomment">//! let echo_out = echo_child.stdout.expect("Failed to open echo stdout");</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! let mut sed_child = Command::new("sed")</span>
<span class="doccomment">//! .arg("s/tpyo/typo/")</span>
<span class="doccomment">//! .stdin(Stdio::from(echo_out))</span>
<span class="doccomment">//! .stdout(Stdio::piped())</span>
<span class="doccomment">//! .spawn()</span>
<span class="doccomment">//! .expect("Failed to start sed process");</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! let output = sed_child.wait_with_output().expect("Failed to wait on sed");</span>
<span class="doccomment">//! assert_eq!(b"Oh no, a typo!\n", output.stdout.as_slice());</span>
<span class="doccomment">//! ```</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! Note that [`ChildStderr`] and [`ChildStdout`] implement [`Read`] and</span>
<span class="doccomment">//! [`ChildStdin`] implements [`Write`]:</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! ```no_run</span>
<span class="doccomment">//! use std::process::{Command, Stdio};</span>
<span class="doccomment">//! use std::io::Write;</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! let mut child = Command::new("/bin/cat")</span>
<span class="doccomment">//! .stdin(Stdio::piped())</span>
<span class="doccomment">//! .stdout(Stdio::piped())</span>
<span class="doccomment">//! .spawn()</span>
<span class="doccomment">//! .expect("failed to execute child");</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! {</span>
<span class="doccomment">//! // limited borrow of stdin</span>
<span class="doccomment">//! let stdin = child.stdin.as_mut().expect("failed to get stdin");</span>
<span class="doccomment">//! stdin.write_all(b"test").expect("failed to write to stdin");</span>
<span class="doccomment">//! }</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! let output = child</span>
<span class="doccomment">//! .wait_with_output()</span>
<span class="doccomment">//! .expect("failed to wait on child");</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! assert_eq!(b"test", output.stdout.as_slice());</span>
<span class="doccomment">//! ```</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! [`abort`]: fn.abort.html</span>
<span class="doccomment">//! [`exit`]: fn.exit.html</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! [`Command`]: struct.Command.html</span>
<span class="doccomment">//! [`spawn`]: struct.Command.html#method.spawn</span>
<span class="doccomment">//! [`output`]: struct.Command.html#method.output</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! [`Child`]: struct.Child.html</span>
<span class="doccomment">//! [`ChildStdin`]: struct.ChildStdin.html</span>
<span class="doccomment">//! [`ChildStdout`]: struct.ChildStdout.html</span>
<span class="doccomment">//! [`ChildStderr`]: struct.ChildStderr.html</span>
<span class="doccomment">//! [`Stdio`]: struct.Stdio.html</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! [`stdout`]: struct.Command.html#method.stdout</span>
<span class="doccomment">//! [`stdin`]: struct.Command.html#method.stdin</span>
<span class="doccomment">//! [`stderr`]: struct.Command.html#method.stderr</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! [`Write`]: ../io/trait.Write.html</span>
<span class="doccomment">//! [`Read`]: ../io/trait.Read.html</span>
<span class="attribute">#![<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"process"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">use</span> <span class="ident">io</span>::<span class="ident">prelude</span>::<span class="kw-2">*</span>;
<span class="kw">use</span> <span class="ident">ffi</span>::<span class="ident">OsStr</span>;
<span class="kw">use</span> <span class="ident">fmt</span>;
<span class="kw">use</span> <span class="ident">fs</span>;
<span class="kw">use</span> <span class="ident">io</span>::{<span class="self">self</span>, <span class="ident">Initializer</span>};
<span class="kw">use</span> <span class="ident">path</span>::<span class="ident">Path</span>;
<span class="kw">use</span> <span class="ident">str</span>;
<span class="kw">use</span> <span class="ident">sys</span>::<span class="ident">pipe</span>::{<span class="ident">read2</span>, <span class="ident">AnonPipe</span>};
<span class="kw">use</span> <span class="ident">sys</span>::<span class="ident">process</span> <span class="kw">as</span> <span class="ident">imp</span>;
<span class="kw">use</span> <span class="ident">sys_common</span>::{<span class="ident">AsInner</span>, <span class="ident">AsInnerMut</span>, <span class="ident">FromInner</span>, <span class="ident">IntoInner</span>};
<span class="doccomment">/// Representation of a running or exited child process.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// This structure is used to represent and manage child processes. A child</span>
<span class="doccomment">/// process is created via the [`Command`] struct, which configures the</span>
<span class="doccomment">/// spawning process and can itself be constructed using a builder-style</span>
<span class="doccomment">/// interface.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// There is no implementation of [`Drop`] for child processes,</span>
<span class="doccomment">/// so if you do not ensure the `Child` has exited then it will continue to</span>
<span class="doccomment">/// run, even after the `Child` handle to the child process has gone out of</span>
<span class="doccomment">/// scope.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Calling [`wait`](#method.wait) (or other functions that wrap around it) will make</span>
<span class="doccomment">/// the parent process wait until the child has actually exited before</span>
<span class="doccomment">/// continuing.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```should_panic</span>
<span class="doccomment">/// use std::process::Command;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let mut child = Command::new("/bin/cat")</span>
<span class="doccomment">/// .arg("file.txt")</span>
<span class="doccomment">/// .spawn()</span>
<span class="doccomment">/// .expect("failed to execute child");</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let ecode = child.wait()</span>
<span class="doccomment">/// .expect("failed to wait on child");</span>
<span class="doccomment">///</span>
<span class="doccomment">/// assert!(ecode.success());</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">///</span>
<span class="doccomment">/// [`Command`]: struct.Command.html</span>
<span class="doccomment">/// [`Drop`]: ../../core/ops/trait.Drop.html</span>
<span class="doccomment">/// [`wait`]: #method.wait</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"process"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">Child</span> {
<span class="ident">handle</span>: <span class="ident">imp</span>::<span class="ident">Process</span>,
<span class="doccomment">/// The handle for writing to the child's standard input (stdin), if it has</span>
<span class="doccomment">/// been captured.</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"process"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">pub</span> <span class="ident">stdin</span>: <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">ChildStdin</span><span class="op">></span>,
<span class="doccomment">/// The handle for reading from the child's standard output (stdout), if it</span>
<span class="doccomment">/// has been captured.</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"process"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">pub</span> <span class="ident">stdout</span>: <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">ChildStdout</span><span class="op">></span>,
<span class="doccomment">/// The handle for reading from the child's standard error (stderr), if it</span>
<span class="doccomment">/// has been captured.</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"process"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">pub</span> <span class="ident">stderr</span>: <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">ChildStderr</span><span class="op">></span>,
}
<span class="kw">impl</span> <span class="ident">AsInner</span><span class="op"><</span><span class="ident">imp</span>::<span class="ident">Process</span><span class="op">></span> <span class="kw">for</span> <span class="ident">Child</span> {
<span class="kw">fn</span> <span class="ident">as_inner</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="kw-2">&</span><span class="ident">imp</span>::<span class="ident">Process</span> { <span class="kw-2">&</span><span class="self">self</span>.<span class="ident">handle</span> }
}
<span class="kw">impl</span> <span class="ident">FromInner</span><span class="op"><</span>(<span class="ident">imp</span>::<span class="ident">Process</span>, <span class="ident">imp</span>::<span class="ident">StdioPipes</span>)<span class="op">></span> <span class="kw">for</span> <span class="ident">Child</span> {
<span class="kw">fn</span> <span class="ident">from_inner</span>((<span class="ident">handle</span>, <span class="ident">io</span>): (<span class="ident">imp</span>::<span class="ident">Process</span>, <span class="ident">imp</span>::<span class="ident">StdioPipes</span>)) <span class="op">-></span> <span class="ident">Child</span> {
<span class="ident">Child</span> {
<span class="ident">handle</span>,
<span class="ident">stdin</span>: <span class="ident">io</span>.<span class="ident">stdin</span>.<span class="ident">map</span>(<span class="ident">ChildStdin</span>::<span class="ident">from_inner</span>),
<span class="ident">stdout</span>: <span class="ident">io</span>.<span class="ident">stdout</span>.<span class="ident">map</span>(<span class="ident">ChildStdout</span>::<span class="ident">from_inner</span>),
<span class="ident">stderr</span>: <span class="ident">io</span>.<span class="ident">stderr</span>.<span class="ident">map</span>(<span class="ident">ChildStderr</span>::<span class="ident">from_inner</span>),
}
}
}
<span class="kw">impl</span> <span class="ident">IntoInner</span><span class="op"><</span><span class="ident">imp</span>::<span class="ident">Process</span><span class="op">></span> <span class="kw">for</span> <span class="ident">Child</span> {
<span class="kw">fn</span> <span class="ident">into_inner</span>(<span class="self">self</span>) <span class="op">-></span> <span class="ident">imp</span>::<span class="ident">Process</span> { <span class="self">self</span>.<span class="ident">handle</span> }
}
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"std_debug"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.16.0"</span>)]</span>
<span class="kw">impl</span> <span class="ident">fmt</span>::<span class="ident">Debug</span> <span class="kw">for</span> <span class="ident">Child</span> {
<span class="kw">fn</span> <span class="ident">fmt</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">f</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">fmt</span>::<span class="ident">Formatter</span>) <span class="op">-></span> <span class="ident">fmt</span>::<span class="prelude-ty">Result</span> {
<span class="ident">f</span>.<span class="ident">debug_struct</span>(<span class="string">"Child"</span>)
.<span class="ident">field</span>(<span class="string">"stdin"</span>, <span class="kw-2">&</span><span class="self">self</span>.<span class="ident">stdin</span>)
.<span class="ident">field</span>(<span class="string">"stdout"</span>, <span class="kw-2">&</span><span class="self">self</span>.<span class="ident">stdout</span>)
.<span class="ident">field</span>(<span class="string">"stderr"</span>, <span class="kw-2">&</span><span class="self">self</span>.<span class="ident">stderr</span>)
.<span class="ident">finish</span>()
}
}
<span class="doccomment">/// A handle to a child process's standard input (stdin).</span>
<span class="doccomment">///</span>
<span class="doccomment">/// This struct is used in the [`stdin`] field on [`Child`].</span>
<span class="doccomment">///</span>
<span class="doccomment">/// When an instance of `ChildStdin` is [dropped], the `ChildStdin`'s underlying</span>
<span class="doccomment">/// file handle will be closed. If the child process was blocked on input prior</span>
<span class="doccomment">/// to being dropped, it will become unblocked after dropping.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// [`Child`]: struct.Child.html</span>
<span class="doccomment">/// [`stdin`]: struct.Child.html#structfield.stdin</span>
<span class="doccomment">/// [dropped]: ../ops/trait.Drop.html</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"process"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">ChildStdin</span> {
<span class="ident">inner</span>: <span class="ident">AnonPipe</span>
}
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"process"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">impl</span> <span class="ident">Write</span> <span class="kw">for</span> <span class="ident">ChildStdin</span> {
<span class="kw">fn</span> <span class="ident">write</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">buf</span>: <span class="kw-2">&</span>[<span class="ident">u8</span>]) <span class="op">-></span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">usize</span><span class="op">></span> {
<span class="self">self</span>.<span class="ident">inner</span>.<span class="ident">write</span>(<span class="ident">buf</span>)
}
<span class="kw">fn</span> <span class="ident">flush</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</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="prelude-val">Ok</span>(())
}
}
<span class="kw">impl</span> <span class="ident">AsInner</span><span class="op"><</span><span class="ident">AnonPipe</span><span class="op">></span> <span class="kw">for</span> <span class="ident">ChildStdin</span> {
<span class="kw">fn</span> <span class="ident">as_inner</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="kw-2">&</span><span class="ident">AnonPipe</span> { <span class="kw-2">&</span><span class="self">self</span>.<span class="ident">inner</span> }
}
<span class="kw">impl</span> <span class="ident">IntoInner</span><span class="op"><</span><span class="ident">AnonPipe</span><span class="op">></span> <span class="kw">for</span> <span class="ident">ChildStdin</span> {
<span class="kw">fn</span> <span class="ident">into_inner</span>(<span class="self">self</span>) <span class="op">-></span> <span class="ident">AnonPipe</span> { <span class="self">self</span>.<span class="ident">inner</span> }
}
<span class="kw">impl</span> <span class="ident">FromInner</span><span class="op"><</span><span class="ident">AnonPipe</span><span class="op">></span> <span class="kw">for</span> <span class="ident">ChildStdin</span> {
<span class="kw">fn</span> <span class="ident">from_inner</span>(<span class="ident">pipe</span>: <span class="ident">AnonPipe</span>) <span class="op">-></span> <span class="ident">ChildStdin</span> {
<span class="ident">ChildStdin</span> { <span class="ident">inner</span>: <span class="ident">pipe</span> }
}
}
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"std_debug"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.16.0"</span>)]</span>
<span class="kw">impl</span> <span class="ident">fmt</span>::<span class="ident">Debug</span> <span class="kw">for</span> <span class="ident">ChildStdin</span> {
<span class="kw">fn</span> <span class="ident">fmt</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">f</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">fmt</span>::<span class="ident">Formatter</span>) <span class="op">-></span> <span class="ident">fmt</span>::<span class="prelude-ty">Result</span> {
<span class="ident">f</span>.<span class="ident">pad</span>(<span class="string">"ChildStdin { .. }"</span>)
}
}
<span class="doccomment">/// A handle to a child process's standard output (stdout).</span>
<span class="doccomment">///</span>
<span class="doccomment">/// This struct is used in the [`stdout`] field on [`Child`].</span>
<span class="doccomment">///</span>
<span class="doccomment">/// When an instance of `ChildStdout` is [dropped], the `ChildStdout`'s</span>
<span class="doccomment">/// underlying file handle will be closed.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// [`Child`]: struct.Child.html</span>
<span class="doccomment">/// [`stdout`]: struct.Child.html#structfield.stdout</span>
<span class="doccomment">/// [dropped]: ../ops/trait.Drop.html</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"process"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">ChildStdout</span> {
<span class="ident">inner</span>: <span class="ident">AnonPipe</span>
}
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"process"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">impl</span> <span class="ident">Read</span> <span class="kw">for</span> <span class="ident">ChildStdout</span> {
<span class="kw">fn</span> <span class="ident">read</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">buf</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> [<span class="ident">u8</span>]) <span class="op">-></span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">usize</span><span class="op">></span> {
<span class="self">self</span>.<span class="ident">inner</span>.<span class="ident">read</span>(<span class="ident">buf</span>)
}
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">unsafe</span> <span class="kw">fn</span> <span class="ident">initializer</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="ident">Initializer</span> {
<span class="ident">Initializer</span>::<span class="ident">nop</span>()
}
}
<span class="kw">impl</span> <span class="ident">AsInner</span><span class="op"><</span><span class="ident">AnonPipe</span><span class="op">></span> <span class="kw">for</span> <span class="ident">ChildStdout</span> {
<span class="kw">fn</span> <span class="ident">as_inner</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="kw-2">&</span><span class="ident">AnonPipe</span> { <span class="kw-2">&</span><span class="self">self</span>.<span class="ident">inner</span> }
}
<span class="kw">impl</span> <span class="ident">IntoInner</span><span class="op"><</span><span class="ident">AnonPipe</span><span class="op">></span> <span class="kw">for</span> <span class="ident">ChildStdout</span> {
<span class="kw">fn</span> <span class="ident">into_inner</span>(<span class="self">self</span>) <span class="op">-></span> <span class="ident">AnonPipe</span> { <span class="self">self</span>.<span class="ident">inner</span> }
}
<span class="kw">impl</span> <span class="ident">FromInner</span><span class="op"><</span><span class="ident">AnonPipe</span><span class="op">></span> <span class="kw">for</span> <span class="ident">ChildStdout</span> {
<span class="kw">fn</span> <span class="ident">from_inner</span>(<span class="ident">pipe</span>: <span class="ident">AnonPipe</span>) <span class="op">-></span> <span class="ident">ChildStdout</span> {
<span class="ident">ChildStdout</span> { <span class="ident">inner</span>: <span class="ident">pipe</span> }
}
}
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"std_debug"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.16.0"</span>)]</span>
<span class="kw">impl</span> <span class="ident">fmt</span>::<span class="ident">Debug</span> <span class="kw">for</span> <span class="ident">ChildStdout</span> {
<span class="kw">fn</span> <span class="ident">fmt</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">f</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">fmt</span>::<span class="ident">Formatter</span>) <span class="op">-></span> <span class="ident">fmt</span>::<span class="prelude-ty">Result</span> {
<span class="ident">f</span>.<span class="ident">pad</span>(<span class="string">"ChildStdout { .. }"</span>)
}
}
<span class="doccomment">/// A handle to a child process's stderr.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// This struct is used in the [`stderr`] field on [`Child`].</span>
<span class="doccomment">///</span>
<span class="doccomment">/// When an instance of `ChildStderr` is [dropped], the `ChildStderr`'s</span>
<span class="doccomment">/// underlying file handle will be closed.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// [`Child`]: struct.Child.html</span>
<span class="doccomment">/// [`stderr`]: struct.Child.html#structfield.stderr</span>
<span class="doccomment">/// [dropped]: ../ops/trait.Drop.html</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"process"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">ChildStderr</span> {
<span class="ident">inner</span>: <span class="ident">AnonPipe</span>
}
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"process"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">impl</span> <span class="ident">Read</span> <span class="kw">for</span> <span class="ident">ChildStderr</span> {
<span class="kw">fn</span> <span class="ident">read</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">buf</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> [<span class="ident">u8</span>]) <span class="op">-></span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">usize</span><span class="op">></span> {
<span class="self">self</span>.<span class="ident">inner</span>.<span class="ident">read</span>(<span class="ident">buf</span>)
}
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">unsafe</span> <span class="kw">fn</span> <span class="ident">initializer</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="ident">Initializer</span> {
<span class="ident">Initializer</span>::<span class="ident">nop</span>()
}
}
<span class="kw">impl</span> <span class="ident">AsInner</span><span class="op"><</span><span class="ident">AnonPipe</span><span class="op">></span> <span class="kw">for</span> <span class="ident">ChildStderr</span> {
<span class="kw">fn</span> <span class="ident">as_inner</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="kw-2">&</span><span class="ident">AnonPipe</span> { <span class="kw-2">&</span><span class="self">self</span>.<span class="ident">inner</span> }
}
<span class="kw">impl</span> <span class="ident">IntoInner</span><span class="op"><</span><span class="ident">AnonPipe</span><span class="op">></span> <span class="kw">for</span> <span class="ident">ChildStderr</span> {
<span class="kw">fn</span> <span class="ident">into_inner</span>(<span class="self">self</span>) <span class="op">-></span> <span class="ident">AnonPipe</span> { <span class="self">self</span>.<span class="ident">inner</span> }
}
<span class="kw">impl</span> <span class="ident">FromInner</span><span class="op"><</span><span class="ident">AnonPipe</span><span class="op">></span> <span class="kw">for</span> <span class="ident">ChildStderr</span> {
<span class="kw">fn</span> <span class="ident">from_inner</span>(<span class="ident">pipe</span>: <span class="ident">AnonPipe</span>) <span class="op">-></span> <span class="ident">ChildStderr</span> {
<span class="ident">ChildStderr</span> { <span class="ident">inner</span>: <span class="ident">pipe</span> }
}
}
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"std_debug"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.16.0"</span>)]</span>
<span class="kw">impl</span> <span class="ident">fmt</span>::<span class="ident">Debug</span> <span class="kw">for</span> <span class="ident">ChildStderr</span> {
<span class="kw">fn</span> <span class="ident">fmt</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">f</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">fmt</span>::<span class="ident">Formatter</span>) <span class="op">-></span> <span class="ident">fmt</span>::<span class="prelude-ty">Result</span> {
<span class="ident">f</span>.<span class="ident">pad</span>(<span class="string">"ChildStderr { .. }"</span>)
}
}
<span class="doccomment">/// A process builder, providing fine-grained control</span>
<span class="doccomment">/// over how a new process should be spawned.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// A default configuration can be</span>
<span class="doccomment">/// generated using `Command::new(program)`, where `program` gives a path to the</span>
<span class="doccomment">/// program to be executed. Additional builder methods allow the configuration</span>
<span class="doccomment">/// to be changed (for example, by adding arguments) prior to spawning:</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">/// use std::process::Command;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let output = if cfg!(target_os = "windows") {</span>
<span class="doccomment">/// Command::new("cmd")</span>
<span class="doccomment">/// .args(&["/C", "echo hello"])</span>
<span class="doccomment">/// .output()</span>
<span class="doccomment">/// .expect("failed to execute process")</span>
<span class="doccomment">/// } else {</span>
<span class="doccomment">/// Command::new("sh")</span>
<span class="doccomment">/// .arg("-c")</span>
<span class="doccomment">/// .arg("echo hello")</span>
<span class="doccomment">/// .output()</span>
<span class="doccomment">/// .expect("failed to execute process")</span>
<span class="doccomment">/// };</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let hello = output.stdout;</span>
<span class="doccomment">/// ```</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"process"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">Command</span> {
<span class="ident">inner</span>: <span class="ident">imp</span>::<span class="ident">Command</span>,
}
<span class="kw">impl</span> <span class="ident">Command</span> {
<span class="doccomment">/// Constructs a new `Command` for launching the program at</span>
<span class="doccomment">/// path `program`, with the following default configuration:</span>
<span class="doccomment">///</span>
<span class="doccomment">/// * No arguments to the program</span>
<span class="doccomment">/// * Inherit the current process's environment</span>
<span class="doccomment">/// * Inherit the current process's working directory</span>
<span class="doccomment">/// * Inherit stdin/stdout/stderr for `spawn` or `status`, but create pipes for `output`</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Builder methods are provided to change these defaults and</span>
<span class="doccomment">/// otherwise configure the process.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// If `program` is not an absolute path, the `PATH` will be searched in</span>
<span class="doccomment">/// an OS-defined way.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// The search path to be used may be controlled by setting the</span>
<span class="doccomment">/// `PATH` environment variable on the Command,</span>
<span class="doccomment">/// but this has some implementation limitations on Windows</span>
<span class="doccomment">/// (see <https://github.com/rust-lang/rust/issues/37519>).</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Basic usage:</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```no_run</span>
<span class="doccomment">/// use std::process::Command;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Command::new("sh")</span>
<span class="doccomment">/// .spawn()</span>
<span class="doccomment">/// .expect("sh command failed to start");</span>
<span class="doccomment">/// ```</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"process"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">new</span><span class="op"><</span><span class="ident">S</span>: <span class="ident">AsRef</span><span class="op"><</span><span class="ident">OsStr</span><span class="op">>></span>(<span class="ident">program</span>: <span class="ident">S</span>) <span class="op">-></span> <span class="ident">Command</span> {
<span class="ident">Command</span> { <span class="ident">inner</span>: <span class="ident">imp</span>::<span class="ident">Command</span>::<span class="ident">new</span>(<span class="ident">program</span>.<span class="ident">as_ref</span>()) }
}
<span class="doccomment">/// Add an argument to pass to the program.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Only one argument can be passed per use. So instead of:</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```no_run</span>
<span class="doccomment">/// # std::process::Command::new("sh")</span>
<span class="doccomment">/// .arg("-C /path/to/repo")</span>
<span class="doccomment">/// # ;</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">///</span>
<span class="doccomment">/// usage would be:</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```no_run</span>
<span class="doccomment">/// # std::process::Command::new("sh")</span>
<span class="doccomment">/// .arg("-C")</span>
<span class="doccomment">/// .arg("/path/to/repo")</span>
<span class="doccomment">/// # ;</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">///</span>
<span class="doccomment">/// To pass multiple arguments see [`args`].</span>
<span class="doccomment">///</span>
<span class="doccomment">/// [`args`]: #method.args</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Basic usage:</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```no_run</span>
<span class="doccomment">/// use std::process::Command;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Command::new("ls")</span>
<span class="doccomment">/// .arg("-l")</span>
<span class="doccomment">/// .arg("-a")</span>
<span class="doccomment">/// .spawn()</span>
<span class="doccomment">/// .expect("ls command failed to start");</span>
<span class="doccomment">/// ```</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"process"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">arg</span><span class="op"><</span><span class="ident">S</span>: <span class="ident">AsRef</span><span class="op"><</span><span class="ident">OsStr</span><span class="op">>></span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">arg</span>: <span class="ident">S</span>) <span class="op">-></span> <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">Command</span> {
<span class="self">self</span>.<span class="ident">inner</span>.<span class="ident">arg</span>(<span class="ident">arg</span>.<span class="ident">as_ref</span>());
<span class="self">self</span>
}
<span class="doccomment">/// Add multiple arguments to pass to the program.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// To pass a single argument see [`arg`].</span>
<span class="doccomment">///</span>
<span class="doccomment">/// [`arg`]: #method.arg</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Basic usage:</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```no_run</span>
<span class="doccomment">/// use std::process::Command;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Command::new("ls")</span>
<span class="doccomment">/// .args(&["-l", "-a"])</span>
<span class="doccomment">/// .spawn()</span>
<span class="doccomment">/// .expect("ls command failed to start");</span>
<span class="doccomment">/// ```</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"process"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">args</span><span class="op"><</span><span class="ident">I</span>, <span class="ident">S</span><span class="op">></span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">args</span>: <span class="ident">I</span>) <span class="op">-></span> <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">Command</span>
<span class="kw">where</span> <span class="ident">I</span>: <span class="ident">IntoIterator</span><span class="op"><</span><span class="ident">Item</span><span class="op">=</span><span class="ident">S</span><span class="op">></span>, <span class="ident">S</span>: <span class="ident">AsRef</span><span class="op"><</span><span class="ident">OsStr</span><span class="op">></span>
{
<span class="kw">for</span> <span class="ident">arg</span> <span class="kw">in</span> <span class="ident">args</span> {
<span class="self">self</span>.<span class="ident">arg</span>(<span class="ident">arg</span>.<span class="ident">as_ref</span>());
}
<span class="self">self</span>
}
<span class="doccomment">/// Inserts or updates an environment variable mapping.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Note that environment variable names are case-insensitive (but case-preserving) on Windows,</span>
<span class="doccomment">/// and case-sensitive on all other platforms.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Basic usage:</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```no_run</span>
<span class="doccomment">/// use std::process::Command;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Command::new("ls")</span>
<span class="doccomment">/// .env("PATH", "/bin")</span>
<span class="doccomment">/// .spawn()</span>
<span class="doccomment">/// .expect("ls command failed to start");</span>
<span class="doccomment">/// ```</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"process"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">env</span><span class="op"><</span><span class="ident">K</span>, <span class="ident">V</span><span class="op">></span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">key</span>: <span class="ident">K</span>, <span class="ident">val</span>: <span class="ident">V</span>) <span class="op">-></span> <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">Command</span>
<span class="kw">where</span> <span class="ident">K</span>: <span class="ident">AsRef</span><span class="op"><</span><span class="ident">OsStr</span><span class="op">></span>, <span class="ident">V</span>: <span class="ident">AsRef</span><span class="op"><</span><span class="ident">OsStr</span><span class="op">></span>
{
<span class="self">self</span>.<span class="ident">inner</span>.<span class="ident">env_mut</span>().<span class="ident">set</span>(<span class="ident">key</span>.<span class="ident">as_ref</span>(), <span class="ident">val</span>.<span class="ident">as_ref</span>());
<span class="self">self</span>
}
<span class="doccomment">/// Add or update multiple environment variable mappings.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Basic usage:</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```no_run</span>
<span class="doccomment">/// use std::process::{Command, Stdio};</span>
<span class="doccomment">/// use std::env;</span>
<span class="doccomment">/// use std::collections::HashMap;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let filtered_env : HashMap<String, String> =</span>
<span class="doccomment">/// env::vars().filter(|&(ref k, _)|</span>
<span class="doccomment">/// k == "TERM" || k == "TZ" || k == "LANG" || k == "PATH"</span>
<span class="doccomment">/// ).collect();</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Command::new("printenv")</span>
<span class="doccomment">/// .stdin(Stdio::null())</span>
<span class="doccomment">/// .stdout(Stdio::inherit())</span>
<span class="doccomment">/// .env_clear()</span>
<span class="doccomment">/// .envs(&filtered_env)</span>
<span class="doccomment">/// .spawn()</span>
<span class="doccomment">/// .expect("printenv failed to start");</span>
<span class="doccomment">/// ```</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"command_envs"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.19.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">envs</span><span class="op"><</span><span class="ident">I</span>, <span class="ident">K</span>, <span class="ident">V</span><span class="op">></span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">vars</span>: <span class="ident">I</span>) <span class="op">-></span> <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">Command</span>
<span class="kw">where</span> <span class="ident">I</span>: <span class="ident">IntoIterator</span><span class="op"><</span><span class="ident">Item</span><span class="op">=</span>(<span class="ident">K</span>, <span class="ident">V</span>)<span class="op">></span>, <span class="ident">K</span>: <span class="ident">AsRef</span><span class="op"><</span><span class="ident">OsStr</span><span class="op">></span>, <span class="ident">V</span>: <span class="ident">AsRef</span><span class="op"><</span><span class="ident">OsStr</span><span class="op">></span>
{
<span class="kw">for</span> (<span class="kw-2">ref</span> <span class="ident">key</span>, <span class="kw-2">ref</span> <span class="ident">val</span>) <span class="kw">in</span> <span class="ident">vars</span> {
<span class="self">self</span>.<span class="ident">inner</span>.<span class="ident">env_mut</span>().<span class="ident">set</span>(<span class="ident">key</span>.<span class="ident">as_ref</span>(), <span class="ident">val</span>.<span class="ident">as_ref</span>());
}
<span class="self">self</span>
}
<span class="doccomment">/// Removes an environment variable mapping.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Basic usage:</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```no_run</span>
<span class="doccomment">/// use std::process::Command;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Command::new("ls")</span>
<span class="doccomment">/// .env_remove("PATH")</span>
<span class="doccomment">/// .spawn()</span>
<span class="doccomment">/// .expect("ls command failed to start");</span>
<span class="doccomment">/// ```</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"process"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">env_remove</span><span class="op"><</span><span class="ident">K</span>: <span class="ident">AsRef</span><span class="op"><</span><span class="ident">OsStr</span><span class="op">>></span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">key</span>: <span class="ident">K</span>) <span class="op">-></span> <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">Command</span> {
<span class="self">self</span>.<span class="ident">inner</span>.<span class="ident">env_mut</span>().<span class="ident">remove</span>(<span class="ident">key</span>.<span class="ident">as_ref</span>());
<span class="self">self</span>
}
<span class="doccomment">/// Clears the entire environment map for the child process.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Basic usage:</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```no_run</span>
<span class="doccomment">/// use std::process::Command;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Command::new("ls")</span>
<span class="doccomment">/// .env_clear()</span>
<span class="doccomment">/// .spawn()</span>
<span class="doccomment">/// .expect("ls command failed to start");</span>
<span class="doccomment">/// ```</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"process"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">env_clear</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>) <span class="op">-></span> <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">Command</span> {
<span class="self">self</span>.<span class="ident">inner</span>.<span class="ident">env_mut</span>().<span class="ident">clear</span>();
<span class="self">self</span>
}
<span class="doccomment">/// Sets the working directory for the child process.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Basic usage:</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```no_run</span>
<span class="doccomment">/// use std::process::Command;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Command::new("ls")</span>
<span class="doccomment">/// .current_dir("/bin")</span>
<span class="doccomment">/// .spawn()</span>
<span class="doccomment">/// .expect("ls command failed to start");</span>
<span class="doccomment">/// ```</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"process"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">current_dir</span><span class="op"><</span><span class="ident">P</span>: <span class="ident">AsRef</span><span class="op"><</span><span class="ident">Path</span><span class="op">>></span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">dir</span>: <span class="ident">P</span>) <span class="op">-></span> <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">Command</span> {
<span class="self">self</span>.<span class="ident">inner</span>.<span class="ident">cwd</span>(<span class="ident">dir</span>.<span class="ident">as_ref</span>().<span class="ident">as_ref</span>());
<span class="self">self</span>
}
<span class="doccomment">/// Configuration for the child process's standard input (stdin) handle.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Defaults to [`inherit`] when used with `spawn` or `status`, and</span>
<span class="doccomment">/// defaults to [`piped`] when used with `output`.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// [`inherit`]: struct.Stdio.html#method.inherit</span>
<span class="doccomment">/// [`piped`]: struct.Stdio.html#method.piped</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Basic usage:</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```no_run</span>
<span class="doccomment">/// use std::process::{Command, Stdio};</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Command::new("ls")</span>
<span class="doccomment">/// .stdin(Stdio::null())</span>
<span class="doccomment">/// .spawn()</span>
<span class="doccomment">/// .expect("ls command failed to start");</span>
<span class="doccomment">/// ```</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"process"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">stdin</span><span class="op"><</span><span class="ident">T</span>: <span class="ident">Into</span><span class="op"><</span><span class="ident">Stdio</span><span class="op">>></span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">cfg</span>: <span class="ident">T</span>) <span class="op">-></span> <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">Command</span> {
<span class="self">self</span>.<span class="ident">inner</span>.<span class="ident">stdin</span>(<span class="ident">cfg</span>.<span class="ident">into</span>().<span class="number">0</span>);
<span class="self">self</span>
}
<span class="doccomment">/// Configuration for the child process's standard output (stdout) handle.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Defaults to [`inherit`] when used with `spawn` or `status`, and</span>
<span class="doccomment">/// defaults to [`piped`] when used with `output`.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// [`inherit`]: struct.Stdio.html#method.inherit</span>
<span class="doccomment">/// [`piped`]: struct.Stdio.html#method.piped</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Basic usage:</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```no_run</span>
<span class="doccomment">/// use std::process::{Command, Stdio};</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Command::new("ls")</span>
<span class="doccomment">/// .stdout(Stdio::null())</span>
<span class="doccomment">/// .spawn()</span>
<span class="doccomment">/// .expect("ls command failed to start");</span>
<span class="doccomment">/// ```</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"process"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">stdout</span><span class="op"><</span><span class="ident">T</span>: <span class="ident">Into</span><span class="op"><</span><span class="ident">Stdio</span><span class="op">>></span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">cfg</span>: <span class="ident">T</span>) <span class="op">-></span> <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">Command</span> {
<span class="self">self</span>.<span class="ident">inner</span>.<span class="ident">stdout</span>(<span class="ident">cfg</span>.<span class="ident">into</span>().<span class="number">0</span>);
<span class="self">self</span>
}
<span class="doccomment">/// Configuration for the child process's standard error (stderr) handle.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Defaults to [`inherit`] when used with `spawn` or `status`, and</span>
<span class="doccomment">/// defaults to [`piped`] when used with `output`.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// [`inherit`]: struct.Stdio.html#method.inherit</span>
<span class="doccomment">/// [`piped`]: struct.Stdio.html#method.piped</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Basic usage:</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```no_run</span>
<span class="doccomment">/// use std::process::{Command, Stdio};</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Command::new("ls")</span>
<span class="doccomment">/// .stderr(Stdio::null())</span>
<span class="doccomment">/// .spawn()</span>
<span class="doccomment">/// .expect("ls command failed to start");</span>
<span class="doccomment">/// ```</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"process"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">stderr</span><span class="op"><</span><span class="ident">T</span>: <span class="ident">Into</span><span class="op"><</span><span class="ident">Stdio</span><span class="op">>></span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">cfg</span>: <span class="ident">T</span>) <span class="op">-></span> <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">Command</span> {
<span class="self">self</span>.<span class="ident">inner</span>.<span class="ident">stderr</span>(<span class="ident">cfg</span>.<span class="ident">into</span>().<span class="number">0</span>);
<span class="self">self</span>
}
<span class="doccomment">/// Executes the command as a child process, returning a handle to it.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// By default, stdin, stdout and stderr are inherited from the parent.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Basic usage:</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```no_run</span>
<span class="doccomment">/// use std::process::Command;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Command::new("ls")</span>
<span class="doccomment">/// .spawn()</span>
<span class="doccomment">/// .expect("ls command failed to start");</span>
<span class="doccomment">/// ```</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"process"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">spawn</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>) <span class="op">-></span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">Child</span><span class="op">></span> {
<span class="self">self</span>.<span class="ident">inner</span>.<span class="ident">spawn</span>(<span class="ident">imp</span>::<span class="ident">Stdio</span>::<span class="ident">Inherit</span>, <span class="bool-val">true</span>).<span class="ident">map</span>(<span class="ident">Child</span>::<span class="ident">from_inner</span>)
}
<span class="doccomment">/// Executes the command as a child process, waiting for it to finish and</span>
<span class="doccomment">/// collecting all of its output.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// By default, stdout and stderr are captured (and used to provide the</span>
<span class="doccomment">/// resulting output). Stdin is not inherited from the parent and any</span>
<span class="doccomment">/// attempt by the child process to read from the stdin stream will result</span>
<span class="doccomment">/// in the stream immediately closing.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```should_panic</span>
<span class="doccomment">/// use std::process::Command;</span>
<span class="doccomment">/// let output = Command::new("/bin/cat")</span>
<span class="doccomment">/// .arg("file.txt")</span>
<span class="doccomment">/// .output()</span>
<span class="doccomment">/// .expect("failed to execute process");</span>
<span class="doccomment">///</span>
<span class="doccomment">/// println!("status: {}", output.status);</span>
<span class="doccomment">/// println!("stdout: {}", String::from_utf8_lossy(&output.stdout));</span>
<span class="doccomment">/// println!("stderr: {}", String::from_utf8_lossy(&output.stderr));</span>
<span class="doccomment">///</span>
<span class="doccomment">/// assert!(output.status.success());</span>
<span class="doccomment">/// ```</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"process"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">output</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>) <span class="op">-></span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">Output</span><span class="op">></span> {
<span class="self">self</span>.<span class="ident">inner</span>.<span class="ident">spawn</span>(<span class="ident">imp</span>::<span class="ident">Stdio</span>::<span class="ident">MakePipe</span>, <span class="bool-val">false</span>).<span class="ident">map</span>(<span class="ident">Child</span>::<span class="ident">from_inner</span>)
.<span class="ident">and_then</span>(<span class="op">|</span><span class="ident">p</span><span class="op">|</span> <span class="ident">p</span>.<span class="ident">wait_with_output</span>())
}
<span class="doccomment">/// Executes a command as a child process, waiting for it to finish and</span>
<span class="doccomment">/// collecting its exit status.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// By default, stdin, stdout and stderr are inherited from the parent.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```should_panic</span>
<span class="doccomment">/// use std::process::Command;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let status = Command::new("/bin/cat")</span>
<span class="doccomment">/// .arg("file.txt")</span>
<span class="doccomment">/// .status()</span>
<span class="doccomment">/// .expect("failed to execute process");</span>
<span class="doccomment">///</span>
<span class="doccomment">/// println!("process exited with: {}", status);</span>
<span class="doccomment">///</span>
<span class="doccomment">/// assert!(status.success());</span>
<span class="doccomment">/// ```</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"process"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">status</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>) <span class="op">-></span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">ExitStatus</span><span class="op">></span> {
<span class="self">self</span>.<span class="ident">inner</span>.<span class="ident">spawn</span>(<span class="ident">imp</span>::<span class="ident">Stdio</span>::<span class="ident">Inherit</span>, <span class="bool-val">true</span>).<span class="ident">map</span>(<span class="ident">Child</span>::<span class="ident">from_inner</span>)
.<span class="ident">and_then</span>(<span class="op">|</span><span class="kw-2">mut</span> <span class="ident">p</span><span class="op">|</span> <span class="ident">p</span>.<span class="ident">wait</span>())
}
}
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">impl</span> <span class="ident">fmt</span>::<span class="ident">Debug</span> <span class="kw">for</span> <span class="ident">Command</span> {
<span class="doccomment">/// Format the program and arguments of a Command for display. Any</span>
<span class="doccomment">/// non-utf8 data is lossily converted using the utf8 replacement</span>
<span class="doccomment">/// character.</span>
<span class="kw">fn</span> <span class="ident">fmt</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">f</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">fmt</span>::<span class="ident">Formatter</span>) <span class="op">-></span> <span class="ident">fmt</span>::<span class="prelude-ty">Result</span> {
<span class="self">self</span>.<span class="ident">inner</span>.<span class="ident">fmt</span>(<span class="ident">f</span>)
}
}
<span class="kw">impl</span> <span class="ident">AsInner</span><span class="op"><</span><span class="ident">imp</span>::<span class="ident">Command</span><span class="op">></span> <span class="kw">for</span> <span class="ident">Command</span> {
<span class="kw">fn</span> <span class="ident">as_inner</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="kw-2">&</span><span class="ident">imp</span>::<span class="ident">Command</span> { <span class="kw-2">&</span><span class="self">self</span>.<span class="ident">inner</span> }
}
<span class="kw">impl</span> <span class="ident">AsInnerMut</span><span class="op"><</span><span class="ident">imp</span>::<span class="ident">Command</span><span class="op">></span> <span class="kw">for</span> <span class="ident">Command</span> {
<span class="kw">fn</span> <span class="ident">as_inner_mut</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>) <span class="op">-></span> <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">imp</span>::<span class="ident">Command</span> { <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>.<span class="ident">inner</span> }
}
<span class="doccomment">/// The output of a finished process.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// This is returned in a Result by either the [`output`] method of a</span>
<span class="doccomment">/// [`Command`], or the [`wait_with_output`] method of a [`Child`]</span>
<span class="doccomment">/// process.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// [`Command`]: struct.Command.html</span>
<span class="doccomment">/// [`Child`]: struct.Child.html</span>
<span class="doccomment">/// [`output`]: struct.Command.html#method.output</span>
<span class="doccomment">/// [`wait_with_output`]: struct.Child.html#method.wait_with_output</span>
<span class="attribute">#[<span class="ident">derive</span>(<span class="ident">PartialEq</span>, <span class="ident">Eq</span>, <span class="ident">Clone</span>)]</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"process"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">Output</span> {
<span class="doccomment">/// The status (exit code) of the process.</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"process"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">pub</span> <span class="ident">status</span>: <span class="ident">ExitStatus</span>,
<span class="doccomment">/// The data that the process wrote to stdout.</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"process"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">pub</span> <span class="ident">stdout</span>: <span class="ident">Vec</span><span class="op"><</span><span class="ident">u8</span><span class="op">></span>,
<span class="doccomment">/// The data that the process wrote to stderr.</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"process"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">pub</span> <span class="ident">stderr</span>: <span class="ident">Vec</span><span class="op"><</span><span class="ident">u8</span><span class="op">></span>,
}
<span class="comment">// If either stderr or stdout are valid utf8 strings it prints the valid</span>
<span class="comment">// strings, otherwise it prints the byte sequence instead</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"process_output_debug"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.7.0"</span>)]</span>
<span class="kw">impl</span> <span class="ident">fmt</span>::<span class="ident">Debug</span> <span class="kw">for</span> <span class="ident">Output</span> {
<span class="kw">fn</span> <span class="ident">fmt</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">fmt</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">fmt</span>::<span class="ident">Formatter</span>) <span class="op">-></span> <span class="ident">fmt</span>::<span class="prelude-ty">Result</span> {
<span class="kw">let</span> <span class="ident">stdout_utf8</span> <span class="op">=</span> <span class="ident">str</span>::<span class="ident">from_utf8</span>(<span class="kw-2">&</span><span class="self">self</span>.<span class="ident">stdout</span>);
<span class="kw">let</span> <span class="ident">stdout_debug</span>: <span class="kw-2">&</span><span class="ident">fmt</span>::<span class="ident">Debug</span> <span class="op">=</span> <span class="kw">match</span> <span class="ident">stdout_utf8</span> {
<span class="prelude-val">Ok</span>(<span class="kw-2">ref</span> <span class="ident">str</span>) <span class="op">=></span> <span class="ident">str</span>,
<span class="prelude-val">Err</span>(<span class="kw">_</span>) <span class="op">=></span> <span class="kw-2">&</span><span class="self">self</span>.<span class="ident">stdout</span>
};
<span class="kw">let</span> <span class="ident">stderr_utf8</span> <span class="op">=</span> <span class="ident">str</span>::<span class="ident">from_utf8</span>(<span class="kw-2">&</span><span class="self">self</span>.<span class="ident">stderr</span>);
<span class="kw">let</span> <span class="ident">stderr_debug</span>: <span class="kw-2">&</span><span class="ident">fmt</span>::<span class="ident">Debug</span> <span class="op">=</span> <span class="kw">match</span> <span class="ident">stderr_utf8</span> {
<span class="prelude-val">Ok</span>(<span class="kw-2">ref</span> <span class="ident">str</span>) <span class="op">=></span> <span class="ident">str</span>,
<span class="prelude-val">Err</span>(<span class="kw">_</span>) <span class="op">=></span> <span class="kw-2">&</span><span class="self">self</span>.<span class="ident">stderr</span>
};
<span class="ident">fmt</span>.<span class="ident">debug_struct</span>(<span class="string">"Output"</span>)
.<span class="ident">field</span>(<span class="string">"status"</span>, <span class="kw-2">&</span><span class="self">self</span>.<span class="ident">status</span>)
.<span class="ident">field</span>(<span class="string">"stdout"</span>, <span class="ident">stdout_debug</span>)
.<span class="ident">field</span>(<span class="string">"stderr"</span>, <span class="ident">stderr_debug</span>)
.<span class="ident">finish</span>()
}
}
<span class="doccomment">/// Describes what to do with a standard I/O stream for a child process when</span>
<span class="doccomment">/// passed to the [`stdin`], [`stdout`], and [`stderr`] methods of [`Command`].</span>
<span class="doccomment">///</span>
<span class="doccomment">/// [`stdin`]: struct.Command.html#method.stdin</span>
<span class="doccomment">/// [`stdout`]: struct.Command.html#method.stdout</span>
<span class="doccomment">/// [`stderr`]: struct.Command.html#method.stderr</span>
<span class="doccomment">/// [`Command`]: struct.Command.html</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"process"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">Stdio</span>(<span class="ident">imp</span>::<span class="ident">Stdio</span>);
<span class="kw">impl</span> <span class="ident">Stdio</span> {
<span class="doccomment">/// A new pipe should be arranged to connect the parent and child processes.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// With stdout:</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```no_run</span>
<span class="doccomment">/// use std::process::{Command, Stdio};</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let output = Command::new("echo")</span>
<span class="doccomment">/// .arg("Hello, world!")</span>
<span class="doccomment">/// .stdout(Stdio::piped())</span>
<span class="doccomment">/// .output()</span>
<span class="doccomment">/// .expect("Failed to execute command");</span>
<span class="doccomment">///</span>
<span class="doccomment">/// assert_eq!(String::from_utf8_lossy(&output.stdout), "Hello, world!\n");</span>
<span class="doccomment">/// // Nothing echoed to console</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">///</span>
<span class="doccomment">/// With stdin:</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```no_run</span>
<span class="doccomment">/// use std::io::Write;</span>
<span class="doccomment">/// use std::process::{Command, Stdio};</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let mut child = Command::new("rev")</span>
<span class="doccomment">/// .stdin(Stdio::piped())</span>
<span class="doccomment">/// .stdout(Stdio::piped())</span>
<span class="doccomment">/// .spawn()</span>
<span class="doccomment">/// .expect("Failed to spawn child process");</span>
<span class="doccomment">///</span>
<span class="doccomment">/// {</span>
<span class="doccomment">/// let mut stdin = child.stdin.as_mut().expect("Failed to open stdin");</span>
<span class="doccomment">/// stdin.write_all("Hello, world!".as_bytes()).expect("Failed to write to stdin");</span>
<span class="doccomment">/// }</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let output = child.wait_with_output().expect("Failed to read stdout");</span>
<span class="doccomment">/// assert_eq!(String::from_utf8_lossy(&output.stdout), "!dlrow ,olleH\n");</span>
<span class="doccomment">/// ```</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"process"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">piped</span>() <span class="op">-></span> <span class="ident">Stdio</span> { <span class="ident">Stdio</span>(<span class="ident">imp</span>::<span class="ident">Stdio</span>::<span class="ident">MakePipe</span>) }
<span class="doccomment">/// The child inherits from the corresponding parent descriptor.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// With stdout:</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```no_run</span>
<span class="doccomment">/// use std::process::{Command, Stdio};</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let output = Command::new("echo")</span>
<span class="doccomment">/// .arg("Hello, world!")</span>
<span class="doccomment">/// .stdout(Stdio::inherit())</span>
<span class="doccomment">/// .output()</span>
<span class="doccomment">/// .expect("Failed to execute command");</span>
<span class="doccomment">///</span>
<span class="doccomment">/// assert_eq!(String::from_utf8_lossy(&output.stdout), "");</span>
<span class="doccomment">/// // "Hello, world!" echoed to console</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">///</span>
<span class="doccomment">/// With stdin:</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```no_run</span>
<span class="doccomment">/// use std::process::{Command, Stdio};</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let output = Command::new("rev")</span>
<span class="doccomment">/// .stdin(Stdio::inherit())</span>
<span class="doccomment">/// .stdout(Stdio::piped())</span>
<span class="doccomment">/// .output()</span>
<span class="doccomment">/// .expect("Failed to execute command");</span>
<span class="doccomment">///</span>
<span class="doccomment">/// println!("You piped in the reverse of: {}", String::from_utf8_lossy(&output.stdout));</span>
<span class="doccomment">/// ```</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"process"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">inherit</span>() <span class="op">-></span> <span class="ident">Stdio</span> { <span class="ident">Stdio</span>(<span class="ident">imp</span>::<span class="ident">Stdio</span>::<span class="ident">Inherit</span>) }
<span class="doccomment">/// This stream will be ignored. This is the equivalent of attaching the</span>
<span class="doccomment">/// stream to `/dev/null`</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// With stdout:</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```no_run</span>
<span class="doccomment">/// use std::process::{Command, Stdio};</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let output = Command::new("echo")</span>
<span class="doccomment">/// .arg("Hello, world!")</span>
<span class="doccomment">/// .stdout(Stdio::null())</span>
<span class="doccomment">/// .output()</span>
<span class="doccomment">/// .expect("Failed to execute command");</span>
<span class="doccomment">///</span>
<span class="doccomment">/// assert_eq!(String::from_utf8_lossy(&output.stdout), "");</span>
<span class="doccomment">/// // Nothing echoed to console</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">///</span>
<span class="doccomment">/// With stdin:</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```no_run</span>
<span class="doccomment">/// use std::process::{Command, Stdio};</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let output = Command::new("rev")</span>
<span class="doccomment">/// .stdin(Stdio::null())</span>
<span class="doccomment">/// .stdout(Stdio::piped())</span>
<span class="doccomment">/// .output()</span>
<span class="doccomment">/// .expect("Failed to execute command");</span>
<span class="doccomment">///</span>
<span class="doccomment">/// assert_eq!(String::from_utf8_lossy(&output.stdout), "");</span>
<span class="doccomment">/// // Ignores any piped-in input</span>
<span class="doccomment">/// ```</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"process"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">null</span>() <span class="op">-></span> <span class="ident">Stdio</span> { <span class="ident">Stdio</span>(<span class="ident">imp</span>::<span class="ident">Stdio</span>::<span class="ident">Null</span>) }
}
<span class="kw">impl</span> <span class="ident">FromInner</span><span class="op"><</span><span class="ident">imp</span>::<span class="ident">Stdio</span><span class="op">></span> <span class="kw">for</span> <span class="ident">Stdio</span> {
<span class="kw">fn</span> <span class="ident">from_inner</span>(<span class="ident">inner</span>: <span class="ident">imp</span>::<span class="ident">Stdio</span>) <span class="op">-></span> <span class="ident">Stdio</span> {
<span class="ident">Stdio</span>(<span class="ident">inner</span>)
}
}
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"std_debug"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.16.0"</span>)]</span>
<span class="kw">impl</span> <span class="ident">fmt</span>::<span class="ident">Debug</span> <span class="kw">for</span> <span class="ident">Stdio</span> {
<span class="kw">fn</span> <span class="ident">fmt</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">f</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">fmt</span>::<span class="ident">Formatter</span>) <span class="op">-></span> <span class="ident">fmt</span>::<span class="prelude-ty">Result</span> {
<span class="ident">f</span>.<span class="ident">pad</span>(<span class="string">"Stdio { .. }"</span>)
}
}
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"stdio_from"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.20.0"</span>)]</span>
<span class="kw">impl</span> <span class="ident">From</span><span class="op"><</span><span class="ident">ChildStdin</span><span class="op">></span> <span class="kw">for</span> <span class="ident">Stdio</span> {
<span class="kw">fn</span> <span class="ident">from</span>(<span class="ident">child</span>: <span class="ident">ChildStdin</span>) <span class="op">-></span> <span class="ident">Stdio</span> {
<span class="ident">Stdio</span>::<span class="ident">from_inner</span>(<span class="ident">child</span>.<span class="ident">into_inner</span>().<span class="ident">into</span>())
}
}
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"stdio_from"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.20.0"</span>)]</span>
<span class="kw">impl</span> <span class="ident">From</span><span class="op"><</span><span class="ident">ChildStdout</span><span class="op">></span> <span class="kw">for</span> <span class="ident">Stdio</span> {
<span class="kw">fn</span> <span class="ident">from</span>(<span class="ident">child</span>: <span class="ident">ChildStdout</span>) <span class="op">-></span> <span class="ident">Stdio</span> {
<span class="ident">Stdio</span>::<span class="ident">from_inner</span>(<span class="ident">child</span>.<span class="ident">into_inner</span>().<span class="ident">into</span>())
}
}
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"stdio_from"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.20.0"</span>)]</span>
<span class="kw">impl</span> <span class="ident">From</span><span class="op"><</span><span class="ident">ChildStderr</span><span class="op">></span> <span class="kw">for</span> <span class="ident">Stdio</span> {
<span class="kw">fn</span> <span class="ident">from</span>(<span class="ident">child</span>: <span class="ident">ChildStderr</span>) <span class="op">-></span> <span class="ident">Stdio</span> {
<span class="ident">Stdio</span>::<span class="ident">from_inner</span>(<span class="ident">child</span>.<span class="ident">into_inner</span>().<span class="ident">into</span>())
}
}
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"stdio_from"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.20.0"</span>)]</span>
<span class="kw">impl</span> <span class="ident">From</span><span class="op"><</span><span class="ident">fs</span>::<span class="ident">File</span><span class="op">></span> <span class="kw">for</span> <span class="ident">Stdio</span> {
<span class="kw">fn</span> <span class="ident">from</span>(<span class="ident">file</span>: <span class="ident">fs</span>::<span class="ident">File</span>) <span class="op">-></span> <span class="ident">Stdio</span> {
<span class="ident">Stdio</span>::<span class="ident">from_inner</span>(<span class="ident">file</span>.<span class="ident">into_inner</span>().<span class="ident">into</span>())
}
}
<span class="doccomment">/// Describes the result of a process after it has terminated.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// This `struct` is used to represent the exit status of a child process.</span>
<span class="doccomment">/// Child processes are created via the [`Command`] struct and their exit</span>
<span class="doccomment">/// status is exposed through the [`status`] method.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// [`Command`]: struct.Command.html</span>
<span class="doccomment">/// [`status`]: struct.Command.html#method.status</span>
<span class="attribute">#[<span class="ident">derive</span>(<span class="ident">PartialEq</span>, <span class="ident">Eq</span>, <span class="ident">Clone</span>, <span class="ident">Copy</span>, <span class="ident">Debug</span>)]</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"process"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">ExitStatus</span>(<span class="ident">imp</span>::<span class="ident">ExitStatus</span>);
<span class="kw">impl</span> <span class="ident">ExitStatus</span> {
<span class="doccomment">/// Was termination successful? Signal termination is not considered a</span>
<span class="doccomment">/// success, and success is defined as a zero exit status.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```rust,no_run</span>
<span class="doccomment">/// use std::process::Command;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let status = Command::new("mkdir")</span>
<span class="doccomment">/// .arg("projects")</span>
<span class="doccomment">/// .status()</span>
<span class="doccomment">/// .expect("failed to execute mkdir");</span>
<span class="doccomment">///</span>
<span class="doccomment">/// if status.success() {</span>
<span class="doccomment">/// println!("'projects/' directory created");</span>
<span class="doccomment">/// } else {</span>
<span class="doccomment">/// println!("failed to create 'projects/' directory");</span>
<span class="doccomment">/// }</span>
<span class="doccomment">/// ```</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"process"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">success</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="ident">bool</span> {
<span class="self">self</span>.<span class="number">0</span>.<span class="ident">success</span>()
}
<span class="doccomment">/// Returns the exit code of the process, if any.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// On Unix, this will return `None` if the process was terminated</span>
<span class="doccomment">/// by a signal; `std::os::unix` provides an extension trait for</span>
<span class="doccomment">/// extracting the signal and other details from the `ExitStatus`.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```no_run</span>
<span class="doccomment">/// use std::process::Command;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let status = Command::new("mkdir")</span>
<span class="doccomment">/// .arg("projects")</span>
<span class="doccomment">/// .status()</span>
<span class="doccomment">/// .expect("failed to execute mkdir");</span>
<span class="doccomment">///</span>
<span class="doccomment">/// match status.code() {</span>
<span class="doccomment">/// Some(code) => println!("Exited with status code: {}", code),</span>
<span class="doccomment">/// None => println!("Process terminated by signal")</span>
<span class="doccomment">/// }</span>
<span class="doccomment">/// ```</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"process"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">code</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">i32</span><span class="op">></span> {
<span class="self">self</span>.<span class="number">0</span>.<span class="ident">code</span>()
}
}
<span class="kw">impl</span> <span class="ident">AsInner</span><span class="op"><</span><span class="ident">imp</span>::<span class="ident">ExitStatus</span><span class="op">></span> <span class="kw">for</span> <span class="ident">ExitStatus</span> {
<span class="kw">fn</span> <span class="ident">as_inner</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="kw-2">&</span><span class="ident">imp</span>::<span class="ident">ExitStatus</span> { <span class="kw-2">&</span><span class="self">self</span>.<span class="number">0</span> }
}
<span class="kw">impl</span> <span class="ident">FromInner</span><span class="op"><</span><span class="ident">imp</span>::<span class="ident">ExitStatus</span><span class="op">></span> <span class="kw">for</span> <span class="ident">ExitStatus</span> {
<span class="kw">fn</span> <span class="ident">from_inner</span>(<span class="ident">s</span>: <span class="ident">imp</span>::<span class="ident">ExitStatus</span>) <span class="op">-></span> <span class="ident">ExitStatus</span> {
<span class="ident">ExitStatus</span>(<span class="ident">s</span>)
}
}
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"process"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">impl</span> <span class="ident">fmt</span>::<span class="ident">Display</span> <span class="kw">for</span> <span class="ident">ExitStatus</span> {
<span class="kw">fn</span> <span class="ident">fmt</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">f</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">fmt</span>::<span class="ident">Formatter</span>) <span class="op">-></span> <span class="ident">fmt</span>::<span class="prelude-ty">Result</span> {
<span class="self">self</span>.<span class="number">0</span>.<span class="ident">fmt</span>(<span class="ident">f</span>)
}
}
<span class="doccomment">/// This type represents the status code a process can return to its</span>
<span class="doccomment">/// parent under normal termination.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Numeric values used in this type don't have portable meanings, and</span>
<span class="doccomment">/// different platforms may mask different amounts of them.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// For the platform's canonical successful and unsuccessful codes, see</span>
<span class="doccomment">/// the [`SUCCESS`] and [`FAILURE`] associated items.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// [`SUCCESS`]: #associatedconstant.SUCCESS</span>
<span class="doccomment">/// [`FAILURE`]: #associatedconstant.FAILURE</span>
<span class="doccomment">///</span>
<span class="doccomment">/// **Warning**: While various forms of this were discussed in [RFC #1937],</span>
<span class="doccomment">/// it was ultimately cut from that RFC, and thus this type is more subject</span>
<span class="doccomment">/// to change even than the usual unstable item churn.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// [RFC #1937]: https://github.com/rust-lang/rfcs/pull/1937</span>
<span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Clone</span>, <span class="ident">Copy</span>, <span class="ident">Debug</span>)]</span>
<span class="attribute">#[<span class="ident">unstable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"process_exitcode_placeholder"</span>, <span class="ident">issue</span> <span class="op">=</span> <span class="string">"48711"</span>)]</span>
<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">ExitCode</span>(<span class="ident">imp</span>::<span class="ident">ExitCode</span>);
<span class="attribute">#[<span class="ident">unstable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"process_exitcode_placeholder"</span>, <span class="ident">issue</span> <span class="op">=</span> <span class="string">"48711"</span>)]</span>
<span class="kw">impl</span> <span class="ident">ExitCode</span> {
<span class="doccomment">/// The canonical ExitCode for successful termination on this platform.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Note that a `()`-returning `main` implicitly results in a successful</span>
<span class="doccomment">/// termination, so there's no need to return this from `main` unless</span>
<span class="doccomment">/// you're also returning other possible codes.</span>
<span class="attribute">#[<span class="ident">unstable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"process_exitcode_placeholder"</span>, <span class="ident">issue</span> <span class="op">=</span> <span class="string">"48711"</span>)]</span>
<span class="kw">pub</span> <span class="kw">const</span> <span class="ident">SUCCESS</span>: <span class="ident">ExitCode</span> <span class="op">=</span> <span class="ident">ExitCode</span>(<span class="ident">imp</span>::<span class="ident">ExitCode</span>::<span class="ident">SUCCESS</span>);
<span class="doccomment">/// The canonical ExitCode for unsuccessful termination on this platform.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// If you're only returning this and `SUCCESS` from `main`, consider</span>
<span class="doccomment">/// instead returning `Err(_)` and `Ok(())` respectively, which will</span>
<span class="doccomment">/// return the same codes (but will also `eprintln!` the error).</span>
<span class="attribute">#[<span class="ident">unstable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"process_exitcode_placeholder"</span>, <span class="ident">issue</span> <span class="op">=</span> <span class="string">"48711"</span>)]</span>
<span class="kw">pub</span> <span class="kw">const</span> <span class="ident">FAILURE</span>: <span class="ident">ExitCode</span> <span class="op">=</span> <span class="ident">ExitCode</span>(<span class="ident">imp</span>::<span class="ident">ExitCode</span>::<span class="ident">FAILURE</span>);
}
<span class="kw">impl</span> <span class="ident">Child</span> {
<span class="doccomment">/// Forces the child process to exit. If the child has already exited, an [`InvalidInput`]</span>
<span class="doccomment">/// error is returned.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// The mapping to [`ErrorKind`]s is not part of the compatibility contract of the function,</span>
<span class="doccomment">/// especially the [`Other`] kind might change to more specific kinds in the future.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// This is equivalent to sending a SIGKILL on Unix platforms.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Basic usage:</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```no_run</span>
<span class="doccomment">/// use std::process::Command;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let mut command = Command::new("yes");</span>
<span class="doccomment">/// if let Ok(mut child) = command.spawn() {</span>
<span class="doccomment">/// child.kill().expect("command wasn't running");</span>
<span class="doccomment">/// } else {</span>
<span class="doccomment">/// println!("yes command didn't start");</span>
<span class="doccomment">/// }</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">///</span>
<span class="doccomment">/// [`ErrorKind`]: ../io/enum.ErrorKind.html</span>
<span class="doccomment">/// [`InvalidInput`]: ../io/enum.ErrorKind.html#variant.InvalidInput</span>
<span class="doccomment">/// [`Other`]: ../io/enum.ErrorKind.html#variant.Other</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"process"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">kill</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</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="self">self</span>.<span class="ident">handle</span>.<span class="ident">kill</span>()
}
<span class="doccomment">/// Returns the OS-assigned process identifier associated with this child.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Basic usage:</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```no_run</span>
<span class="doccomment">/// use std::process::Command;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let mut command = Command::new("ls");</span>
<span class="doccomment">/// if let Ok(child) = command.spawn() {</span>
<span class="doccomment">/// println!("Child's id is {}", child.id());</span>
<span class="doccomment">/// } else {</span>
<span class="doccomment">/// println!("ls command didn't start");</span>
<span class="doccomment">/// }</span>
<span class="doccomment">/// ```</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"process_id"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.3.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">id</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="ident">u32</span> {
<span class="self">self</span>.<span class="ident">handle</span>.<span class="ident">id</span>()
}
<span class="doccomment">/// Waits for the child to exit completely, returning the status that it</span>
<span class="doccomment">/// exited with. This function will continue to have the same return value</span>
<span class="doccomment">/// after it has been called at least once.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// The stdin handle to the child process, if any, will be closed</span>
<span class="doccomment">/// before waiting. This helps avoid deadlock: it ensures that the</span>
<span class="doccomment">/// child does not block waiting for input from the parent, while</span>
<span class="doccomment">/// the parent waits for the child to exit.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Basic usage:</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```no_run</span>
<span class="doccomment">/// use std::process::Command;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let mut command = Command::new("ls");</span>
<span class="doccomment">/// if let Ok(mut child) = command.spawn() {</span>
<span class="doccomment">/// child.wait().expect("command wasn't running");</span>
<span class="doccomment">/// println!("Child has finished its execution!");</span>
<span class="doccomment">/// } else {</span>
<span class="doccomment">/// println!("ls command didn't start");</span>
<span class="doccomment">/// }</span>
<span class="doccomment">/// ```</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"process"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">wait</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>) <span class="op">-></span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">ExitStatus</span><span class="op">></span> {
<span class="ident">drop</span>(<span class="self">self</span>.<span class="ident">stdin</span>.<span class="ident">take</span>());
<span class="self">self</span>.<span class="ident">handle</span>.<span class="ident">wait</span>().<span class="ident">map</span>(<span class="ident">ExitStatus</span>)
}
<span class="doccomment">/// Attempts to collect the exit status of the child if it has already</span>
<span class="doccomment">/// exited.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// This function will not block the calling thread and will only advisorily</span>
<span class="doccomment">/// check to see if the child process has exited or not. If the child has</span>
<span class="doccomment">/// exited then on Unix the process id is reaped. This function is</span>
<span class="doccomment">/// guaranteed to repeatedly return a successful exit status so long as the</span>
<span class="doccomment">/// child has already exited.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// If the child has exited, then `Ok(Some(status))` is returned. If the</span>
<span class="doccomment">/// exit status is not available at this time then `Ok(None)` is returned.</span>
<span class="doccomment">/// If an error occurs, then that error is returned.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Note that unlike `wait`, this function will not attempt to drop stdin.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Basic usage:</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```no_run</span>
<span class="doccomment">/// use std::process::Command;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let mut child = Command::new("ls").spawn().unwrap();</span>
<span class="doccomment">///</span>
<span class="doccomment">/// match child.try_wait() {</span>
<span class="doccomment">/// Ok(Some(status)) => println!("exited with: {}", status),</span>
<span class="doccomment">/// Ok(None) => {</span>
<span class="doccomment">/// println!("status not ready yet, let's really wait");</span>
<span class="doccomment">/// let res = child.wait();</span>
<span class="doccomment">/// println!("result: {:?}", res);</span>
<span class="doccomment">/// }</span>
<span class="doccomment">/// Err(e) => println!("error attempting to wait: {}", e),</span>
<span class="doccomment">/// }</span>
<span class="doccomment">/// ```</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"process_try_wait"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.18.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">try_wait</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>) <span class="op">-></span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op"><</span><span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">ExitStatus</span><span class="op">>></span> {
<span class="prelude-val">Ok</span>(<span class="self">self</span>.<span class="ident">handle</span>.<span class="ident">try_wait</span>()<span class="question-mark">?</span>.<span class="ident">map</span>(<span class="ident">ExitStatus</span>))
}
<span class="doccomment">/// Simultaneously waits for the child to exit and collect all remaining</span>
<span class="doccomment">/// output on the stdout/stderr handles, returning an `Output`</span>
<span class="doccomment">/// instance.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// The stdin handle to the child process, if any, will be closed</span>
<span class="doccomment">/// before waiting. This helps avoid deadlock: it ensures that the</span>
<span class="doccomment">/// child does not block waiting for input from the parent, while</span>
<span class="doccomment">/// the parent waits for the child to exit.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// By default, stdin, stdout and stderr are inherited from the parent.</span>
<span class="doccomment">/// In order to capture the output into this `Result<Output>` it is</span>
<span class="doccomment">/// necessary to create new pipes between parent and child. Use</span>
<span class="doccomment">/// `stdout(Stdio::piped())` or `stderr(Stdio::piped())`, respectively.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```should_panic</span>
<span class="doccomment">/// use std::process::{Command, Stdio};</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let child = Command::new("/bin/cat")</span>
<span class="doccomment">/// .arg("file.txt")</span>
<span class="doccomment">/// .stdout(Stdio::piped())</span>
<span class="doccomment">/// .spawn()</span>
<span class="doccomment">/// .expect("failed to execute child");</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let output = child</span>
<span class="doccomment">/// .wait_with_output()</span>
<span class="doccomment">/// .expect("failed to wait on child");</span>
<span class="doccomment">///</span>
<span class="doccomment">/// assert!(output.status.success());</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">///</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"process"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">wait_with_output</span>(<span class="kw-2">mut</span> <span class="self">self</span>) <span class="op">-></span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">Output</span><span class="op">></span> {
<span class="ident">drop</span>(<span class="self">self</span>.<span class="ident">stdin</span>.<span class="ident">take</span>());
<span class="kw">let</span> (<span class="kw-2">mut</span> <span class="ident">stdout</span>, <span class="kw-2">mut</span> <span class="ident">stderr</span>) <span class="op">=</span> (<span class="ident">Vec</span>::<span class="ident">new</span>(), <span class="ident">Vec</span>::<span class="ident">new</span>());
<span class="kw">match</span> (<span class="self">self</span>.<span class="ident">stdout</span>.<span class="ident">take</span>(), <span class="self">self</span>.<span class="ident">stderr</span>.<span class="ident">take</span>()) {
(<span class="prelude-val">None</span>, <span class="prelude-val">None</span>) <span class="op">=></span> {}
(<span class="prelude-val">Some</span>(<span class="kw-2">mut</span> <span class="ident">out</span>), <span class="prelude-val">None</span>) <span class="op">=></span> {
<span class="kw">let</span> <span class="ident">res</span> <span class="op">=</span> <span class="ident">out</span>.<span class="ident">read_to_end</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">stdout</span>);
<span class="ident">res</span>.<span class="ident">unwrap</span>();
}
(<span class="prelude-val">None</span>, <span class="prelude-val">Some</span>(<span class="kw-2">mut</span> <span class="ident">err</span>)) <span class="op">=></span> {
<span class="kw">let</span> <span class="ident">res</span> <span class="op">=</span> <span class="ident">err</span>.<span class="ident">read_to_end</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">stderr</span>);
<span class="ident">res</span>.<span class="ident">unwrap</span>();
}
(<span class="prelude-val">Some</span>(<span class="ident">out</span>), <span class="prelude-val">Some</span>(<span class="ident">err</span>)) <span class="op">=></span> {
<span class="kw">let</span> <span class="ident">res</span> <span class="op">=</span> <span class="ident">read2</span>(<span class="ident">out</span>.<span class="ident">inner</span>, <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">stdout</span>, <span class="ident">err</span>.<span class="ident">inner</span>, <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">stderr</span>);
<span class="ident">res</span>.<span class="ident">unwrap</span>();
}
}
<span class="kw">let</span> <span class="ident">status</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">wait</span>()<span class="question-mark">?</span>;
<span class="prelude-val">Ok</span>(<span class="ident">Output</span> {
<span class="ident">status</span>,
<span class="ident">stdout</span>,
<span class="ident">stderr</span>,
})
}
}
<span class="doccomment">/// Terminates the current process with the specified exit code.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// This function will never return and will immediately terminate the current</span>
<span class="doccomment">/// process. The exit code is passed through to the underlying OS and will be</span>
<span class="doccomment">/// available for consumption by another process.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Note that because this function never returns, and that it terminates the</span>
<span class="doccomment">/// process, no destructors on the current stack or any other thread's stack</span>
<span class="doccomment">/// will be run. If a clean shutdown is needed it is recommended to only call</span>
<span class="doccomment">/// this function at a known point where there are no more destructors left</span>
<span class="doccomment">/// to run.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ## Platform-specific behavior</span>
<span class="doccomment">///</span>
<span class="doccomment">/// **Unix**: On Unix-like platforms, it is unlikely that all 32 bits of `exit`</span>
<span class="doccomment">/// will be visible to a parent process inspecting the exit code. On most</span>
<span class="doccomment">/// Unix-like platforms, only the eight least-significant bits are considered.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Due to this function’s behavior regarding destructors, a conventional way</span>
<span class="doccomment">/// to use the function is to extract the actual computation to another</span>
<span class="doccomment">/// function and compute the exit code from its return value:</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">/// fn run_app() -> Result<(), ()> {</span>
<span class="doccomment">/// // Application logic here</span>
<span class="doccomment">/// Ok(())</span>
<span class="doccomment">/// }</span>
<span class="doccomment">///</span>
<span class="doccomment">/// fn main() {</span>
<span class="doccomment">/// ::std::process::exit(match run_app() {</span>
<span class="doccomment">/// Ok(_) => 0,</span>
<span class="doccomment">/// Err(err) => {</span>
<span class="doccomment">/// eprintln!("error: {:?}", err);</span>
<span class="doccomment">/// 1</span>
<span class="doccomment">/// }</span>
<span class="doccomment">/// });</span>
<span class="doccomment">/// }</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Due to [platform-specific behavior], the exit code for this example will be</span>
<span class="doccomment">/// `0` on Linux, but `256` on Windows:</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```no_run</span>
<span class="doccomment">/// use std::process;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// process::exit(0x0100);</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">///</span>
<span class="doccomment">/// [platform-specific behavior]: #platform-specific-behavior</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">exit</span>(<span class="ident">code</span>: <span class="ident">i32</span>) <span class="op">-></span> <span class="op">!</span> {
::<span class="ident">sys_common</span>::<span class="ident">cleanup</span>();
::<span class="ident">sys</span>::<span class="ident">os</span>::<span class="ident">exit</span>(<span class="ident">code</span>)
}
<span class="doccomment">/// Terminates the process in an abnormal fashion.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// The function will never return and will immediately terminate the current</span>
<span class="doccomment">/// process in a platform specific "abnormal" manner.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Note that because this function never returns, and that it terminates the</span>
<span class="doccomment">/// process, no destructors on the current stack or any other thread's stack</span>
<span class="doccomment">/// will be run.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// This is in contrast to the default behaviour of [`panic!`] which unwinds</span>
<span class="doccomment">/// the current thread's stack and calls all destructors.</span>
<span class="doccomment">/// When `panic="abort"` is set, either as an argument to `rustc` or in a</span>
<span class="doccomment">/// crate's Cargo.toml, [`panic!`] and `abort` are similar. However,</span>
<span class="doccomment">/// [`panic!`] will still call the [panic hook] while `abort` will not.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// If a clean shutdown is needed it is recommended to only call</span>
<span class="doccomment">/// this function at a known point where there are no more destructors left</span>
<span class="doccomment">/// to run.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```no_run</span>
<span class="doccomment">/// use std::process;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// fn main() {</span>
<span class="doccomment">/// println!("aborting");</span>
<span class="doccomment">///</span>
<span class="doccomment">/// process::abort();</span>
<span class="doccomment">///</span>
<span class="doccomment">/// // execution never gets here</span>
<span class="doccomment">/// }</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">///</span>
<span class="doccomment">/// The `abort` function terminates the process, so the destructor will not</span>
<span class="doccomment">/// get run on the example below:</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```no_run</span>
<span class="doccomment">/// use std::process;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// struct HasDrop;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// impl Drop for HasDrop {</span>
<span class="doccomment">/// fn drop(&mut self) {</span>
<span class="doccomment">/// println!("This will never be printed!");</span>
<span class="doccomment">/// }</span>
<span class="doccomment">/// }</span>
<span class="doccomment">///</span>
<span class="doccomment">/// fn main() {</span>
<span class="doccomment">/// let _x = HasDrop;</span>
<span class="doccomment">/// process::abort();</span>
<span class="doccomment">/// // the destructor implemented for HasDrop will never get run</span>
<span class="doccomment">/// }</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">///</span>
<span class="doccomment">/// [`panic!`]: ../../std/macro.panic.html</span>
<span class="doccomment">/// [panic hook]: ../../std/panic/fn.set_hook.html</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"process_abort"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.17.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">abort</span>() <span class="op">-></span> <span class="op">!</span> {
<span class="kw">unsafe</span> { ::<span class="ident">sys</span>::<span class="ident">abort_internal</span>() };
}
<span class="doccomment">/// Returns the OS-assigned process identifier associated with this process.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Basic usage:</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```no_run</span>
<span class="doccomment">/// use std::process;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// println!("My pid is {}", process::id());</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">///</span>
<span class="doccomment">///</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"getpid"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.26.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">id</span>() <span class="op">-></span> <span class="ident">u32</span> {
::<span class="ident">sys</span>::<span class="ident">os</span>::<span class="ident">getpid</span>()
}
<span class="doccomment">/// A trait for implementing arbitrary return types in the `main` function.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// The c-main function only supports to return integers as return type.</span>
<span class="doccomment">/// So, every type implementing the `Termination` trait has to be converted</span>
<span class="doccomment">/// to an integer.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// The default implementations are returning `libc::EXIT_SUCCESS` to indicate</span>
<span class="doccomment">/// a successful execution. In case of a failure, `libc::EXIT_FAILURE` is returned.</span>
<span class="attribute">#[<span class="ident">cfg_attr</span>(<span class="ident">not</span>(<span class="ident">test</span>), <span class="ident">lang</span> <span class="op">=</span> <span class="string">"termination"</span>)]</span>
<span class="attribute">#[<span class="ident">unstable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"termination_trait_lib"</span>, <span class="ident">issue</span> <span class="op">=</span> <span class="string">"43301"</span>)]</span>
<span class="attribute">#[<span class="ident">rustc_on_unimplemented</span>(
<span class="ident">message</span><span class="op">=</span><span class="string">"`main` has invalid return type `{Self}`"</span>,
<span class="ident">label</span><span class="op">=</span><span class="string">"`main` can only return types that implement `{Termination}`"</span>)]</span>
<span class="kw">pub</span> <span class="kw">trait</span> <span class="ident">Termination</span> {
<span class="doccomment">/// Is called to get the representation of the value as status code.</span>
<span class="doccomment">/// This status code is returned to the operating system.</span>
<span class="kw">fn</span> <span class="ident">report</span>(<span class="self">self</span>) <span class="op">-></span> <span class="ident">i32</span>;
}
<span class="attribute">#[<span class="ident">unstable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"termination_trait_lib"</span>, <span class="ident">issue</span> <span class="op">=</span> <span class="string">"43301"</span>)]</span>
<span class="kw">impl</span> <span class="ident">Termination</span> <span class="kw">for</span> () {
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">fn</span> <span class="ident">report</span>(<span class="self">self</span>) <span class="op">-></span> <span class="ident">i32</span> { <span class="ident">ExitCode</span>::<span class="ident">SUCCESS</span>.<span class="ident">report</span>() }
}
<span class="attribute">#[<span class="ident">unstable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"termination_trait_lib"</span>, <span class="ident">issue</span> <span class="op">=</span> <span class="string">"43301"</span>)]</span>
<span class="kw">impl</span><span class="op"><</span><span class="ident">E</span>: <span class="ident">fmt</span>::<span class="ident">Debug</span><span class="op">></span> <span class="ident">Termination</span> <span class="kw">for</span> <span class="prelude-ty">Result</span><span class="op"><</span>(), <span class="ident">E</span><span class="op">></span> {
<span class="kw">fn</span> <span class="ident">report</span>(<span class="self">self</span>) <span class="op">-></span> <span class="ident">i32</span> {
<span class="kw">match</span> <span class="self">self</span> {
<span class="prelude-val">Ok</span>(()) <span class="op">=></span> ().<span class="ident">report</span>(),
<span class="prelude-val">Err</span>(<span class="ident">err</span>) <span class="op">=></span> <span class="prelude-val">Err</span>::<span class="op"><</span><span class="op">!</span>, <span class="kw">_</span><span class="op">></span>(<span class="ident">err</span>).<span class="ident">report</span>(),
}
}
}
<span class="attribute">#[<span class="ident">unstable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"termination_trait_lib"</span>, <span class="ident">issue</span> <span class="op">=</span> <span class="string">"43301"</span>)]</span>
<span class="kw">impl</span> <span class="ident">Termination</span> <span class="kw">for</span> <span class="op">!</span> {
<span class="kw">fn</span> <span class="ident">report</span>(<span class="self">self</span>) <span class="op">-></span> <span class="ident">i32</span> { <span class="self">self</span> }
}
<span class="attribute">#[<span class="ident">unstable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"termination_trait_lib"</span>, <span class="ident">issue</span> <span class="op">=</span> <span class="string">"43301"</span>)]</span>
<span class="kw">impl</span><span class="op"><</span><span class="ident">E</span>: <span class="ident">fmt</span>::<span class="ident">Debug</span><span class="op">></span> <span class="ident">Termination</span> <span class="kw">for</span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="op">!</span>, <span class="ident">E</span><span class="op">></span> {
<span class="kw">fn</span> <span class="ident">report</span>(<span class="self">self</span>) <span class="op">-></span> <span class="ident">i32</span> {
<span class="kw">let</span> <span class="prelude-val">Err</span>(<span class="ident">err</span>) <span class="op">=</span> <span class="self">self</span>;
<span class="macro">eprintln</span><span class="macro">!</span>(<span class="string">"Error: {:?}"</span>, <span class="ident">err</span>);
<span class="ident">ExitCode</span>::<span class="ident">FAILURE</span>.<span class="ident">report</span>()
}
}
<span class="attribute">#[<span class="ident">unstable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"termination_trait_lib"</span>, <span class="ident">issue</span> <span class="op">=</span> <span class="string">"43301"</span>)]</span>
<span class="kw">impl</span> <span class="ident">Termination</span> <span class="kw">for</span> <span class="ident">ExitCode</span> {
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">fn</span> <span class="ident">report</span>(<span class="self">self</span>) <span class="op">-></span> <span class="ident">i32</span> {
<span class="self">self</span>.<span class="number">0</span>.<span class="ident">as_i32</span>()
}
}
<span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">all</span>(<span class="ident">test</span>, <span class="ident">not</span>(<span class="ident">any</span>(<span class="ident">target_os</span> <span class="op">=</span> <span class="string">"cloudabi"</span>, <span class="ident">target_os</span> <span class="op">=</span> <span class="string">"emscripten"</span>))))]</span>
<span class="kw">mod</span> <span class="ident">tests</span> {
<span class="kw">use</span> <span class="ident">io</span>::<span class="ident">prelude</span>::<span class="kw-2">*</span>;
<span class="kw">use</span> <span class="ident">io</span>::<span class="ident">ErrorKind</span>;
<span class="kw">use</span> <span class="ident">str</span>;
<span class="kw">use</span> <span class="kw">super</span>::{<span class="ident">Command</span>, <span class="ident">Output</span>, <span class="ident">Stdio</span>};
<span class="comment">// FIXME(#10380) these tests should not all be ignored on android.</span>
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="attribute">#[<span class="ident">cfg_attr</span>(<span class="ident">target_os</span> <span class="op">=</span> <span class="string">"android"</span>, <span class="ident">ignore</span>)]</span>
<span class="kw">fn</span> <span class="ident">smoke</span>() {
<span class="kw">let</span> <span class="ident">p</span> <span class="op">=</span> <span class="kw">if</span> <span class="macro">cfg</span><span class="macro">!</span>(<span class="ident">target_os</span> <span class="op">=</span> <span class="string">"windows"</span>) {
<span class="ident">Command</span>::<span class="ident">new</span>(<span class="string">"cmd"</span>).<span class="ident">args</span>(<span class="kw-2">&</span>[<span class="string">"/C"</span>, <span class="string">"exit 0"</span>]).<span class="ident">spawn</span>()
} <span class="kw">else</span> {
<span class="ident">Command</span>::<span class="ident">new</span>(<span class="string">"true"</span>).<span class="ident">spawn</span>()
};
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">p</span>.<span class="ident">is_ok</span>());
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">p</span> <span class="op">=</span> <span class="ident">p</span>.<span class="ident">unwrap</span>();
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">p</span>.<span class="ident">wait</span>().<span class="ident">unwrap</span>().<span class="ident">success</span>());
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="attribute">#[<span class="ident">cfg_attr</span>(<span class="ident">target_os</span> <span class="op">=</span> <span class="string">"android"</span>, <span class="ident">ignore</span>)]</span>
<span class="kw">fn</span> <span class="ident">smoke_failure</span>() {
<span class="kw">match</span> <span class="ident">Command</span>::<span class="ident">new</span>(<span class="string">"if-this-is-a-binary-then-the-world-has-ended"</span>).<span class="ident">spawn</span>() {
<span class="prelude-val">Ok</span>(..) <span class="op">=></span> <span class="macro">panic</span><span class="macro">!</span>(),
<span class="prelude-val">Err</span>(..) <span class="op">=></span> {}
}
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="attribute">#[<span class="ident">cfg_attr</span>(<span class="ident">target_os</span> <span class="op">=</span> <span class="string">"android"</span>, <span class="ident">ignore</span>)]</span>
<span class="kw">fn</span> <span class="ident">exit_reported_right</span>() {
<span class="kw">let</span> <span class="ident">p</span> <span class="op">=</span> <span class="kw">if</span> <span class="macro">cfg</span><span class="macro">!</span>(<span class="ident">target_os</span> <span class="op">=</span> <span class="string">"windows"</span>) {
<span class="ident">Command</span>::<span class="ident">new</span>(<span class="string">"cmd"</span>).<span class="ident">args</span>(<span class="kw-2">&</span>[<span class="string">"/C"</span>, <span class="string">"exit 1"</span>]).<span class="ident">spawn</span>()
} <span class="kw">else</span> {
<span class="ident">Command</span>::<span class="ident">new</span>(<span class="string">"false"</span>).<span class="ident">spawn</span>()
};
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">p</span>.<span class="ident">is_ok</span>());
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">p</span> <span class="op">=</span> <span class="ident">p</span>.<span class="ident">unwrap</span>();
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">p</span>.<span class="ident">wait</span>().<span class="ident">unwrap</span>().<span class="ident">code</span>() <span class="op">==</span> <span class="prelude-val">Some</span>(<span class="number">1</span>));
<span class="ident">drop</span>(<span class="ident">p</span>.<span class="ident">wait</span>());
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">unix</span>)]</span>
<span class="attribute">#[<span class="ident">cfg_attr</span>(<span class="ident">target_os</span> <span class="op">=</span> <span class="string">"android"</span>, <span class="ident">ignore</span>)]</span>
<span class="kw">fn</span> <span class="ident">signal_reported_right</span>() {
<span class="kw">use</span> <span class="ident">os</span>::<span class="ident">unix</span>::<span class="ident">process</span>::<span class="ident">ExitStatusExt</span>;
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">p</span> <span class="op">=</span> <span class="ident">Command</span>::<span class="ident">new</span>(<span class="string">"/bin/sh"</span>)
.<span class="ident">arg</span>(<span class="string">"-c"</span>).<span class="ident">arg</span>(<span class="string">"read a"</span>)
.<span class="ident">stdin</span>(<span class="ident">Stdio</span>::<span class="ident">piped</span>())
.<span class="ident">spawn</span>().<span class="ident">unwrap</span>();
<span class="ident">p</span>.<span class="ident">kill</span>().<span class="ident">unwrap</span>();
<span class="kw">match</span> <span class="ident">p</span>.<span class="ident">wait</span>().<span class="ident">unwrap</span>().<span class="ident">signal</span>() {
<span class="prelude-val">Some</span>(<span class="number">9</span>) <span class="op">=></span> {},
<span class="ident">result</span> <span class="op">=></span> <span class="macro">panic</span><span class="macro">!</span>(<span class="string">"not terminated by signal 9 (instead, {:?})"</span>,
<span class="ident">result</span>),
}
}
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">run_output</span>(<span class="kw-2">mut</span> <span class="ident">cmd</span>: <span class="ident">Command</span>) <span class="op">-></span> <span class="ident">String</span> {
<span class="kw">let</span> <span class="ident">p</span> <span class="op">=</span> <span class="ident">cmd</span>.<span class="ident">spawn</span>();
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">p</span>.<span class="ident">is_ok</span>());
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">p</span> <span class="op">=</span> <span class="ident">p</span>.<span class="ident">unwrap</span>();
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">p</span>.<span class="ident">stdout</span>.<span class="ident">is_some</span>());
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">ret</span> <span class="op">=</span> <span class="ident">String</span>::<span class="ident">new</span>();
<span class="ident">p</span>.<span class="ident">stdout</span>.<span class="ident">as_mut</span>().<span class="ident">unwrap</span>().<span class="ident">read_to_string</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">ret</span>).<span class="ident">unwrap</span>();
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">p</span>.<span class="ident">wait</span>().<span class="ident">unwrap</span>().<span class="ident">success</span>());
<span class="kw">return</span> <span class="ident">ret</span>;
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="attribute">#[<span class="ident">cfg_attr</span>(<span class="ident">target_os</span> <span class="op">=</span> <span class="string">"android"</span>, <span class="ident">ignore</span>)]</span>
<span class="kw">fn</span> <span class="ident">stdout_works</span>() {
<span class="kw">if</span> <span class="macro">cfg</span><span class="macro">!</span>(<span class="ident">target_os</span> <span class="op">=</span> <span class="string">"windows"</span>) {
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">cmd</span> <span class="op">=</span> <span class="ident">Command</span>::<span class="ident">new</span>(<span class="string">"cmd"</span>);
<span class="ident">cmd</span>.<span class="ident">args</span>(<span class="kw-2">&</span>[<span class="string">"/C"</span>, <span class="string">"echo foobar"</span>]).<span class="ident">stdout</span>(<span class="ident">Stdio</span>::<span class="ident">piped</span>());
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">run_output</span>(<span class="ident">cmd</span>), <span class="string">"foobar\r\n"</span>);
} <span class="kw">else</span> {
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">cmd</span> <span class="op">=</span> <span class="ident">Command</span>::<span class="ident">new</span>(<span class="string">"echo"</span>);
<span class="ident">cmd</span>.<span class="ident">arg</span>(<span class="string">"foobar"</span>).<span class="ident">stdout</span>(<span class="ident">Stdio</span>::<span class="ident">piped</span>());
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">run_output</span>(<span class="ident">cmd</span>), <span class="string">"foobar\n"</span>);
}
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="attribute">#[<span class="ident">cfg_attr</span>(<span class="ident">any</span>(<span class="ident">windows</span>, <span class="ident">target_os</span> <span class="op">=</span> <span class="string">"android"</span>), <span class="ident">ignore</span>)]</span>
<span class="kw">fn</span> <span class="ident">set_current_dir_works</span>() {
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">cmd</span> <span class="op">=</span> <span class="ident">Command</span>::<span class="ident">new</span>(<span class="string">"/bin/sh"</span>);
<span class="ident">cmd</span>.<span class="ident">arg</span>(<span class="string">"-c"</span>).<span class="ident">arg</span>(<span class="string">"pwd"</span>)
.<span class="ident">current_dir</span>(<span class="string">"/"</span>)
.<span class="ident">stdout</span>(<span class="ident">Stdio</span>::<span class="ident">piped</span>());
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">run_output</span>(<span class="ident">cmd</span>), <span class="string">"/\n"</span>);
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="attribute">#[<span class="ident">cfg_attr</span>(<span class="ident">any</span>(<span class="ident">windows</span>, <span class="ident">target_os</span> <span class="op">=</span> <span class="string">"android"</span>), <span class="ident">ignore</span>)]</span>
<span class="kw">fn</span> <span class="ident">stdin_works</span>() {
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">p</span> <span class="op">=</span> <span class="ident">Command</span>::<span class="ident">new</span>(<span class="string">"/bin/sh"</span>)
.<span class="ident">arg</span>(<span class="string">"-c"</span>).<span class="ident">arg</span>(<span class="string">"read line; echo $line"</span>)
.<span class="ident">stdin</span>(<span class="ident">Stdio</span>::<span class="ident">piped</span>())
.<span class="ident">stdout</span>(<span class="ident">Stdio</span>::<span class="ident">piped</span>())
.<span class="ident">spawn</span>().<span class="ident">unwrap</span>();
<span class="ident">p</span>.<span class="ident">stdin</span>.<span class="ident">as_mut</span>().<span class="ident">unwrap</span>().<span class="ident">write</span>(<span class="string">"foobar"</span>.<span class="ident">as_bytes</span>()).<span class="ident">unwrap</span>();
<span class="ident">drop</span>(<span class="ident">p</span>.<span class="ident">stdin</span>.<span class="ident">take</span>());
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">out</span> <span class="op">=</span> <span class="ident">String</span>::<span class="ident">new</span>();
<span class="ident">p</span>.<span class="ident">stdout</span>.<span class="ident">as_mut</span>().<span class="ident">unwrap</span>().<span class="ident">read_to_string</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">out</span>).<span class="ident">unwrap</span>();
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">p</span>.<span class="ident">wait</span>().<span class="ident">unwrap</span>().<span class="ident">success</span>());
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">out</span>, <span class="string">"foobar\n"</span>);
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="attribute">#[<span class="ident">cfg_attr</span>(<span class="ident">target_os</span> <span class="op">=</span> <span class="string">"android"</span>, <span class="ident">ignore</span>)]</span>
<span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">unix</span>)]</span>
<span class="kw">fn</span> <span class="ident">uid_works</span>() {
<span class="kw">use</span> <span class="ident">os</span>::<span class="ident">unix</span>::<span class="ident">prelude</span>::<span class="kw-2">*</span>;
<span class="kw">use</span> <span class="ident">libc</span>;
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">p</span> <span class="op">=</span> <span class="ident">Command</span>::<span class="ident">new</span>(<span class="string">"/bin/sh"</span>)
.<span class="ident">arg</span>(<span class="string">"-c"</span>).<span class="ident">arg</span>(<span class="string">"true"</span>)
.<span class="ident">uid</span>(<span class="kw">unsafe</span> { <span class="ident">libc</span>::<span class="ident">getuid</span>() })
.<span class="ident">gid</span>(<span class="kw">unsafe</span> { <span class="ident">libc</span>::<span class="ident">getgid</span>() })
.<span class="ident">spawn</span>().<span class="ident">unwrap</span>();
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">p</span>.<span class="ident">wait</span>().<span class="ident">unwrap</span>().<span class="ident">success</span>());
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="attribute">#[<span class="ident">cfg_attr</span>(<span class="ident">target_os</span> <span class="op">=</span> <span class="string">"android"</span>, <span class="ident">ignore</span>)]</span>
<span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">unix</span>)]</span>
<span class="kw">fn</span> <span class="ident">uid_to_root_fails</span>() {
<span class="kw">use</span> <span class="ident">os</span>::<span class="ident">unix</span>::<span class="ident">prelude</span>::<span class="kw-2">*</span>;
<span class="kw">use</span> <span class="ident">libc</span>;
<span class="comment">// if we're already root, this isn't a valid test. Most of the bots run</span>
<span class="comment">// as non-root though (android is an exception).</span>
<span class="kw">if</span> <span class="kw">unsafe</span> { <span class="ident">libc</span>::<span class="ident">getuid</span>() <span class="op">==</span> <span class="number">0</span> } { <span class="kw">return</span> }
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">Command</span>::<span class="ident">new</span>(<span class="string">"/bin/ls"</span>).<span class="ident">uid</span>(<span class="number">0</span>).<span class="ident">gid</span>(<span class="number">0</span>).<span class="ident">spawn</span>().<span class="ident">is_err</span>());
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="attribute">#[<span class="ident">cfg_attr</span>(<span class="ident">target_os</span> <span class="op">=</span> <span class="string">"android"</span>, <span class="ident">ignore</span>)]</span>
<span class="kw">fn</span> <span class="ident">test_process_status</span>() {
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">status</span> <span class="op">=</span> <span class="kw">if</span> <span class="macro">cfg</span><span class="macro">!</span>(<span class="ident">target_os</span> <span class="op">=</span> <span class="string">"windows"</span>) {
<span class="ident">Command</span>::<span class="ident">new</span>(<span class="string">"cmd"</span>).<span class="ident">args</span>(<span class="kw-2">&</span>[<span class="string">"/C"</span>, <span class="string">"exit 1"</span>]).<span class="ident">status</span>().<span class="ident">unwrap</span>()
} <span class="kw">else</span> {
<span class="ident">Command</span>::<span class="ident">new</span>(<span class="string">"false"</span>).<span class="ident">status</span>().<span class="ident">unwrap</span>()
};
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">status</span>.<span class="ident">code</span>() <span class="op">==</span> <span class="prelude-val">Some</span>(<span class="number">1</span>));
<span class="ident">status</span> <span class="op">=</span> <span class="kw">if</span> <span class="macro">cfg</span><span class="macro">!</span>(<span class="ident">target_os</span> <span class="op">=</span> <span class="string">"windows"</span>) {
<span class="ident">Command</span>::<span class="ident">new</span>(<span class="string">"cmd"</span>).<span class="ident">args</span>(<span class="kw-2">&</span>[<span class="string">"/C"</span>, <span class="string">"exit 0"</span>]).<span class="ident">status</span>().<span class="ident">unwrap</span>()
} <span class="kw">else</span> {
<span class="ident">Command</span>::<span class="ident">new</span>(<span class="string">"true"</span>).<span class="ident">status</span>().<span class="ident">unwrap</span>()
};
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">status</span>.<span class="ident">success</span>());
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">test_process_output_fail_to_start</span>() {
<span class="kw">match</span> <span class="ident">Command</span>::<span class="ident">new</span>(<span class="string">"/no-binary-by-this-name-should-exist"</span>).<span class="ident">output</span>() {
<span class="prelude-val">Err</span>(<span class="ident">e</span>) <span class="op">=></span> <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">e</span>.<span class="ident">kind</span>(), <span class="ident">ErrorKind</span>::<span class="ident">NotFound</span>),
<span class="prelude-val">Ok</span>(..) <span class="op">=></span> <span class="macro">panic</span><span class="macro">!</span>()
}
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="attribute">#[<span class="ident">cfg_attr</span>(<span class="ident">target_os</span> <span class="op">=</span> <span class="string">"android"</span>, <span class="ident">ignore</span>)]</span>
<span class="kw">fn</span> <span class="ident">test_process_output_output</span>() {
<span class="kw">let</span> <span class="ident">Output</span> {<span class="ident">status</span>, <span class="ident">stdout</span>, <span class="ident">stderr</span>}
<span class="op">=</span> <span class="kw">if</span> <span class="macro">cfg</span><span class="macro">!</span>(<span class="ident">target_os</span> <span class="op">=</span> <span class="string">"windows"</span>) {
<span class="ident">Command</span>::<span class="ident">new</span>(<span class="string">"cmd"</span>).<span class="ident">args</span>(<span class="kw-2">&</span>[<span class="string">"/C"</span>, <span class="string">"echo hello"</span>]).<span class="ident">output</span>().<span class="ident">unwrap</span>()
} <span class="kw">else</span> {
<span class="ident">Command</span>::<span class="ident">new</span>(<span class="string">"echo"</span>).<span class="ident">arg</span>(<span class="string">"hello"</span>).<span class="ident">output</span>().<span class="ident">unwrap</span>()
};
<span class="kw">let</span> <span class="ident">output_str</span> <span class="op">=</span> <span class="ident">str</span>::<span class="ident">from_utf8</span>(<span class="kw-2">&</span><span class="ident">stdout</span>).<span class="ident">unwrap</span>();
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">status</span>.<span class="ident">success</span>());
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">output_str</span>.<span class="ident">trim</span>().<span class="ident">to_string</span>(), <span class="string">"hello"</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">stderr</span>, <span class="ident">Vec</span>::<span class="ident">new</span>());
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="attribute">#[<span class="ident">cfg_attr</span>(<span class="ident">target_os</span> <span class="op">=</span> <span class="string">"android"</span>, <span class="ident">ignore</span>)]</span>
<span class="kw">fn</span> <span class="ident">test_process_output_error</span>() {
<span class="kw">let</span> <span class="ident">Output</span> {<span class="ident">status</span>, <span class="ident">stdout</span>, <span class="ident">stderr</span>}
<span class="op">=</span> <span class="kw">if</span> <span class="macro">cfg</span><span class="macro">!</span>(<span class="ident">target_os</span> <span class="op">=</span> <span class="string">"windows"</span>) {
<span class="ident">Command</span>::<span class="ident">new</span>(<span class="string">"cmd"</span>).<span class="ident">args</span>(<span class="kw-2">&</span>[<span class="string">"/C"</span>, <span class="string">"mkdir ."</span>]).<span class="ident">output</span>().<span class="ident">unwrap</span>()
} <span class="kw">else</span> {
<span class="ident">Command</span>::<span class="ident">new</span>(<span class="string">"mkdir"</span>).<span class="ident">arg</span>(<span class="string">"./"</span>).<span class="ident">output</span>().<span class="ident">unwrap</span>()
};
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">status</span>.<span class="ident">code</span>() <span class="op">==</span> <span class="prelude-val">Some</span>(<span class="number">1</span>));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">stdout</span>, <span class="ident">Vec</span>::<span class="ident">new</span>());
<span class="macro">assert</span><span class="macro">!</span>(<span class="op">!</span><span class="ident">stderr</span>.<span class="ident">is_empty</span>());
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="attribute">#[<span class="ident">cfg_attr</span>(<span class="ident">target_os</span> <span class="op">=</span> <span class="string">"android"</span>, <span class="ident">ignore</span>)]</span>
<span class="kw">fn</span> <span class="ident">test_finish_once</span>() {
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">prog</span> <span class="op">=</span> <span class="kw">if</span> <span class="macro">cfg</span><span class="macro">!</span>(<span class="ident">target_os</span> <span class="op">=</span> <span class="string">"windows"</span>) {
<span class="ident">Command</span>::<span class="ident">new</span>(<span class="string">"cmd"</span>).<span class="ident">args</span>(<span class="kw-2">&</span>[<span class="string">"/C"</span>, <span class="string">"exit 1"</span>]).<span class="ident">spawn</span>().<span class="ident">unwrap</span>()
} <span class="kw">else</span> {
<span class="ident">Command</span>::<span class="ident">new</span>(<span class="string">"false"</span>).<span class="ident">spawn</span>().<span class="ident">unwrap</span>()
};
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">prog</span>.<span class="ident">wait</span>().<span class="ident">unwrap</span>().<span class="ident">code</span>() <span class="op">==</span> <span class="prelude-val">Some</span>(<span class="number">1</span>));
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="attribute">#[<span class="ident">cfg_attr</span>(<span class="ident">target_os</span> <span class="op">=</span> <span class="string">"android"</span>, <span class="ident">ignore</span>)]</span>
<span class="kw">fn</span> <span class="ident">test_finish_twice</span>() {
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">prog</span> <span class="op">=</span> <span class="kw">if</span> <span class="macro">cfg</span><span class="macro">!</span>(<span class="ident">target_os</span> <span class="op">=</span> <span class="string">"windows"</span>) {
<span class="ident">Command</span>::<span class="ident">new</span>(<span class="string">"cmd"</span>).<span class="ident">args</span>(<span class="kw-2">&</span>[<span class="string">"/C"</span>, <span class="string">"exit 1"</span>]).<span class="ident">spawn</span>().<span class="ident">unwrap</span>()
} <span class="kw">else</span> {
<span class="ident">Command</span>::<span class="ident">new</span>(<span class="string">"false"</span>).<span class="ident">spawn</span>().<span class="ident">unwrap</span>()
};
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">prog</span>.<span class="ident">wait</span>().<span class="ident">unwrap</span>().<span class="ident">code</span>() <span class="op">==</span> <span class="prelude-val">Some</span>(<span class="number">1</span>));
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">prog</span>.<span class="ident">wait</span>().<span class="ident">unwrap</span>().<span class="ident">code</span>() <span class="op">==</span> <span class="prelude-val">Some</span>(<span class="number">1</span>));
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="attribute">#[<span class="ident">cfg_attr</span>(<span class="ident">target_os</span> <span class="op">=</span> <span class="string">"android"</span>, <span class="ident">ignore</span>)]</span>
<span class="kw">fn</span> <span class="ident">test_wait_with_output_once</span>() {
<span class="kw">let</span> <span class="ident">prog</span> <span class="op">=</span> <span class="kw">if</span> <span class="macro">cfg</span><span class="macro">!</span>(<span class="ident">target_os</span> <span class="op">=</span> <span class="string">"windows"</span>) {
<span class="ident">Command</span>::<span class="ident">new</span>(<span class="string">"cmd"</span>).<span class="ident">args</span>(<span class="kw-2">&</span>[<span class="string">"/C"</span>, <span class="string">"echo hello"</span>]).<span class="ident">stdout</span>(<span class="ident">Stdio</span>::<span class="ident">piped</span>()).<span class="ident">spawn</span>().<span class="ident">unwrap</span>()
} <span class="kw">else</span> {
<span class="ident">Command</span>::<span class="ident">new</span>(<span class="string">"echo"</span>).<span class="ident">arg</span>(<span class="string">"hello"</span>).<span class="ident">stdout</span>(<span class="ident">Stdio</span>::<span class="ident">piped</span>()).<span class="ident">spawn</span>().<span class="ident">unwrap</span>()
};
<span class="kw">let</span> <span class="ident">Output</span> {<span class="ident">status</span>, <span class="ident">stdout</span>, <span class="ident">stderr</span>} <span class="op">=</span> <span class="ident">prog</span>.<span class="ident">wait_with_output</span>().<span class="ident">unwrap</span>();
<span class="kw">let</span> <span class="ident">output_str</span> <span class="op">=</span> <span class="ident">str</span>::<span class="ident">from_utf8</span>(<span class="kw-2">&</span><span class="ident">stdout</span>).<span class="ident">unwrap</span>();
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">status</span>.<span class="ident">success</span>());
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">output_str</span>.<span class="ident">trim</span>().<span class="ident">to_string</span>(), <span class="string">"hello"</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">stderr</span>, <span class="ident">Vec</span>::<span class="ident">new</span>());
}
<span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">all</span>(<span class="ident">unix</span>, <span class="ident">not</span>(<span class="ident">target_os</span><span class="op">=</span><span class="string">"android"</span>)))]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">env_cmd</span>() <span class="op">-></span> <span class="ident">Command</span> {
<span class="ident">Command</span>::<span class="ident">new</span>(<span class="string">"env"</span>)
}
<span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">target_os</span><span class="op">=</span><span class="string">"android"</span>)]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">env_cmd</span>() <span class="op">-></span> <span class="ident">Command</span> {
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">cmd</span> <span class="op">=</span> <span class="ident">Command</span>::<span class="ident">new</span>(<span class="string">"/system/bin/sh"</span>);
<span class="ident">cmd</span>.<span class="ident">arg</span>(<span class="string">"-c"</span>).<span class="ident">arg</span>(<span class="string">"set"</span>);
<span class="ident">cmd</span>
}
<span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">windows</span>)]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">env_cmd</span>() <span class="op">-></span> <span class="ident">Command</span> {
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">cmd</span> <span class="op">=</span> <span class="ident">Command</span>::<span class="ident">new</span>(<span class="string">"cmd"</span>);
<span class="ident">cmd</span>.<span class="ident">arg</span>(<span class="string">"/c"</span>).<span class="ident">arg</span>(<span class="string">"set"</span>);
<span class="ident">cmd</span>
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">test_inherit_env</span>() {
<span class="kw">use</span> <span class="ident">env</span>;
<span class="kw">let</span> <span class="ident">result</span> <span class="op">=</span> <span class="ident">env_cmd</span>().<span class="ident">output</span>().<span class="ident">unwrap</span>();
<span class="kw">let</span> <span class="ident">output</span> <span class="op">=</span> <span class="ident">String</span>::<span class="ident">from_utf8</span>(<span class="ident">result</span>.<span class="ident">stdout</span>).<span class="ident">unwrap</span>();
<span class="kw">for</span> (<span class="kw-2">ref</span> <span class="ident">k</span>, <span class="kw-2">ref</span> <span class="ident">v</span>) <span class="kw">in</span> <span class="ident">env</span>::<span class="ident">vars</span>() {
<span class="comment">// Don't check android RANDOM variable which seems to change</span>
<span class="comment">// whenever the shell runs, and our `env_cmd` is indeed running a</span>
<span class="comment">// shell which means it'll get a different RANDOM than we probably</span>
<span class="comment">// have.</span>
<span class="comment">//</span>
<span class="comment">// Also skip env vars with `-` in the name on android because, well,</span>
<span class="comment">// I'm not sure. It appears though that the `set` command above does</span>
<span class="comment">// not print env vars with `-` in the name, so we just skip them</span>
<span class="comment">// here as we won't find them in the output. Note that most env vars</span>
<span class="comment">// use `_` instead of `-`, but our build system sets a few env vars</span>
<span class="comment">// with `-` in the name.</span>
<span class="kw">if</span> <span class="macro">cfg</span><span class="macro">!</span>(<span class="ident">target_os</span> <span class="op">=</span> <span class="string">"android"</span>) <span class="op">&&</span>
(<span class="kw-2">*</span><span class="ident">k</span> <span class="op">==</span> <span class="string">"RANDOM"</span> <span class="op">||</span> <span class="ident">k</span>.<span class="ident">contains</span>(<span class="string">"-"</span>)) {
<span class="kw">continue</span>
}
<span class="comment">// Windows has hidden environment variables whose names start with</span>
<span class="comment">// equals signs (`=`). Those do not show up in the output of the</span>
<span class="comment">// `set` command.</span>
<span class="macro">assert</span><span class="macro">!</span>((<span class="macro">cfg</span><span class="macro">!</span>(<span class="ident">windows</span>) <span class="op">&&</span> <span class="ident">k</span>.<span class="ident">starts_with</span>(<span class="string">"="</span>)) <span class="op">||</span>
<span class="ident">k</span>.<span class="ident">starts_with</span>(<span class="string">"DYLD"</span>) <span class="op">||</span>
<span class="ident">output</span>.<span class="ident">contains</span>(<span class="kw-2">&</span><span class="macro">format</span><span class="macro">!</span>(<span class="string">"{}={}"</span>, <span class="kw-2">*</span><span class="ident">k</span>, <span class="kw-2">*</span><span class="ident">v</span>)) <span class="op">||</span>
<span class="ident">output</span>.<span class="ident">contains</span>(<span class="kw-2">&</span><span class="macro">format</span><span class="macro">!</span>(<span class="string">"{}='{}'"</span>, <span class="kw-2">*</span><span class="ident">k</span>, <span class="kw-2">*</span><span class="ident">v</span>)),
<span class="string">"output doesn't contain `{}={}`\n{}"</span>,
<span class="ident">k</span>, <span class="ident">v</span>, <span class="ident">output</span>);
}
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">test_override_env</span>() {
<span class="kw">use</span> <span class="ident">env</span>;
<span class="comment">// In some build environments (such as chrooted Nix builds), `env` can</span>
<span class="comment">// only be found in the explicitly-provided PATH env variable, not in</span>
<span class="comment">// default places such as /bin or /usr/bin. So we need to pass through</span>
<span class="comment">// PATH to our sub-process.</span>
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">cmd</span> <span class="op">=</span> <span class="ident">env_cmd</span>();
<span class="ident">cmd</span>.<span class="ident">env_clear</span>().<span class="ident">env</span>(<span class="string">"RUN_TEST_NEW_ENV"</span>, <span class="string">"123"</span>);
<span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">p</span>) <span class="op">=</span> <span class="ident">env</span>::<span class="ident">var_os</span>(<span class="string">"PATH"</span>) {
<span class="ident">cmd</span>.<span class="ident">env</span>(<span class="string">"PATH"</span>, <span class="kw-2">&</span><span class="ident">p</span>);
}
<span class="kw">let</span> <span class="ident">result</span> <span class="op">=</span> <span class="ident">cmd</span>.<span class="ident">output</span>().<span class="ident">unwrap</span>();
<span class="kw">let</span> <span class="ident">output</span> <span class="op">=</span> <span class="ident">String</span>::<span class="ident">from_utf8_lossy</span>(<span class="kw-2">&</span><span class="ident">result</span>.<span class="ident">stdout</span>).<span class="ident">to_string</span>();
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">output</span>.<span class="ident">contains</span>(<span class="string">"RUN_TEST_NEW_ENV=123"</span>),
<span class="string">"didn't find RUN_TEST_NEW_ENV inside of:\n\n{}"</span>, <span class="ident">output</span>);
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">test_add_to_env</span>() {
<span class="kw">let</span> <span class="ident">result</span> <span class="op">=</span> <span class="ident">env_cmd</span>().<span class="ident">env</span>(<span class="string">"RUN_TEST_NEW_ENV"</span>, <span class="string">"123"</span>).<span class="ident">output</span>().<span class="ident">unwrap</span>();
<span class="kw">let</span> <span class="ident">output</span> <span class="op">=</span> <span class="ident">String</span>::<span class="ident">from_utf8_lossy</span>(<span class="kw-2">&</span><span class="ident">result</span>.<span class="ident">stdout</span>).<span class="ident">to_string</span>();
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">output</span>.<span class="ident">contains</span>(<span class="string">"RUN_TEST_NEW_ENV=123"</span>),
<span class="string">"didn't find RUN_TEST_NEW_ENV inside of:\n\n{}"</span>, <span class="ident">output</span>);
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">test_capture_env_at_spawn</span>() {
<span class="kw">use</span> <span class="ident">env</span>;
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">cmd</span> <span class="op">=</span> <span class="ident">env_cmd</span>();
<span class="ident">cmd</span>.<span class="ident">env</span>(<span class="string">"RUN_TEST_NEW_ENV1"</span>, <span class="string">"123"</span>);
<span class="comment">// This variable will not be present if the environment has already</span>
<span class="comment">// been captured above.</span>
<span class="ident">env</span>::<span class="ident">set_var</span>(<span class="string">"RUN_TEST_NEW_ENV2"</span>, <span class="string">"456"</span>);
<span class="kw">let</span> <span class="ident">result</span> <span class="op">=</span> <span class="ident">cmd</span>.<span class="ident">output</span>().<span class="ident">unwrap</span>();
<span class="ident">env</span>::<span class="ident">remove_var</span>(<span class="string">"RUN_TEST_NEW_ENV2"</span>);
<span class="kw">let</span> <span class="ident">output</span> <span class="op">=</span> <span class="ident">String</span>::<span class="ident">from_utf8_lossy</span>(<span class="kw-2">&</span><span class="ident">result</span>.<span class="ident">stdout</span>).<span class="ident">to_string</span>();
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">output</span>.<span class="ident">contains</span>(<span class="string">"RUN_TEST_NEW_ENV1=123"</span>),
<span class="string">"didn't find RUN_TEST_NEW_ENV1 inside of:\n\n{}"</span>, <span class="ident">output</span>);
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">output</span>.<span class="ident">contains</span>(<span class="string">"RUN_TEST_NEW_ENV2=456"</span>),
<span class="string">"didn't find RUN_TEST_NEW_ENV2 inside of:\n\n{}"</span>, <span class="ident">output</span>);
}
<span class="comment">// Regression tests for #30858.</span>
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">test_interior_nul_in_progname_is_error</span>() {
<span class="kw">match</span> <span class="ident">Command</span>::<span class="ident">new</span>(<span class="string">"has-some-\0\0s-inside"</span>).<span class="ident">spawn</span>() {
<span class="prelude-val">Err</span>(<span class="ident">e</span>) <span class="op">=></span> <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">e</span>.<span class="ident">kind</span>(), <span class="ident">ErrorKind</span>::<span class="ident">InvalidInput</span>),
<span class="prelude-val">Ok</span>(<span class="kw">_</span>) <span class="op">=></span> <span class="macro">panic</span><span class="macro">!</span>(),
}
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">test_interior_nul_in_arg_is_error</span>() {
<span class="kw">match</span> <span class="ident">Command</span>::<span class="ident">new</span>(<span class="string">"echo"</span>).<span class="ident">arg</span>(<span class="string">"has-some-\0\0s-inside"</span>).<span class="ident">spawn</span>() {
<span class="prelude-val">Err</span>(<span class="ident">e</span>) <span class="op">=></span> <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">e</span>.<span class="ident">kind</span>(), <span class="ident">ErrorKind</span>::<span class="ident">InvalidInput</span>),
<span class="prelude-val">Ok</span>(<span class="kw">_</span>) <span class="op">=></span> <span class="macro">panic</span><span class="macro">!</span>(),
}
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">test_interior_nul_in_args_is_error</span>() {
<span class="kw">match</span> <span class="ident">Command</span>::<span class="ident">new</span>(<span class="string">"echo"</span>).<span class="ident">args</span>(<span class="kw-2">&</span>[<span class="string">"has-some-\0\0s-inside"</span>]).<span class="ident">spawn</span>() {
<span class="prelude-val">Err</span>(<span class="ident">e</span>) <span class="op">=></span> <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">e</span>.<span class="ident">kind</span>(), <span class="ident">ErrorKind</span>::<span class="ident">InvalidInput</span>),
<span class="prelude-val">Ok</span>(<span class="kw">_</span>) <span class="op">=></span> <span class="macro">panic</span><span class="macro">!</span>(),
}
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">test_interior_nul_in_current_dir_is_error</span>() {
<span class="kw">match</span> <span class="ident">Command</span>::<span class="ident">new</span>(<span class="string">"echo"</span>).<span class="ident">current_dir</span>(<span class="string">"has-some-\0\0s-inside"</span>).<span class="ident">spawn</span>() {
<span class="prelude-val">Err</span>(<span class="ident">e</span>) <span class="op">=></span> <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">e</span>.<span class="ident">kind</span>(), <span class="ident">ErrorKind</span>::<span class="ident">InvalidInput</span>),
<span class="prelude-val">Ok</span>(<span class="kw">_</span>) <span class="op">=></span> <span class="macro">panic</span><span class="macro">!</span>(),
}
}
<span class="comment">// Regression tests for #30862.</span>
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">test_interior_nul_in_env_key_is_error</span>() {
<span class="kw">match</span> <span class="ident">env_cmd</span>().<span class="ident">env</span>(<span class="string">"has-some-\0\0s-inside"</span>, <span class="string">"value"</span>).<span class="ident">spawn</span>() {
<span class="prelude-val">Err</span>(<span class="ident">e</span>) <span class="op">=></span> <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">e</span>.<span class="ident">kind</span>(), <span class="ident">ErrorKind</span>::<span class="ident">InvalidInput</span>),
<span class="prelude-val">Ok</span>(<span class="kw">_</span>) <span class="op">=></span> <span class="macro">panic</span><span class="macro">!</span>(),
}
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">test_interior_nul_in_env_value_is_error</span>() {
<span class="kw">match</span> <span class="ident">env_cmd</span>().<span class="ident">env</span>(<span class="string">"key"</span>, <span class="string">"has-some-\0\0s-inside"</span>).<span class="ident">spawn</span>() {
<span class="prelude-val">Err</span>(<span class="ident">e</span>) <span class="op">=></span> <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">e</span>.<span class="ident">kind</span>(), <span class="ident">ErrorKind</span>::<span class="ident">InvalidInput</span>),
<span class="prelude-val">Ok</span>(<span class="kw">_</span>) <span class="op">=></span> <span class="macro">panic</span><span class="macro">!</span>(),
}
}
<span class="doccomment">/// Test that process creation flags work by debugging a process.</span>
<span class="doccomment">/// Other creation flags make it hard or impossible to detect</span>
<span class="doccomment">/// behavioral changes in the process.</span>
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">windows</span>)]</span>
<span class="kw">fn</span> <span class="ident">test_creation_flags</span>() {
<span class="kw">use</span> <span class="ident">os</span>::<span class="ident">windows</span>::<span class="ident">process</span>::<span class="ident">CommandExt</span>;
<span class="kw">use</span> <span class="ident">sys</span>::<span class="ident">c</span>::{<span class="ident">BOOL</span>, <span class="ident">DWORD</span>, <span class="ident">INFINITE</span>};
<span class="attribute">#[<span class="ident">repr</span>(<span class="ident">C</span>, <span class="ident">packed</span>)]</span>
<span class="kw">struct</span> <span class="ident">DEBUG_EVENT</span> {
<span class="kw">pub</span> <span class="ident">event_code</span>: <span class="ident">DWORD</span>,
<span class="kw">pub</span> <span class="ident">process_id</span>: <span class="ident">DWORD</span>,
<span class="kw">pub</span> <span class="ident">thread_id</span>: <span class="ident">DWORD</span>,
<span class="comment">// This is a union in the real struct, but we don't</span>
<span class="comment">// need this data for the purposes of this test.</span>
<span class="kw">pub</span> <span class="ident">_junk</span>: [<span class="ident">u8</span>; <span class="number">164</span>],
}
<span class="kw">extern</span> <span class="string">"system"</span> {
<span class="kw">fn</span> <span class="ident">WaitForDebugEvent</span>(<span class="ident">lpDebugEvent</span>: <span class="kw-2">*</span><span class="kw-2">mut</span> <span class="ident">DEBUG_EVENT</span>, <span class="ident">dwMilliseconds</span>: <span class="ident">DWORD</span>) <span class="op">-></span> <span class="ident">BOOL</span>;
<span class="kw">fn</span> <span class="ident">ContinueDebugEvent</span>(<span class="ident">dwProcessId</span>: <span class="ident">DWORD</span>, <span class="ident">dwThreadId</span>: <span class="ident">DWORD</span>,
<span class="ident">dwContinueStatus</span>: <span class="ident">DWORD</span>) <span class="op">-></span> <span class="ident">BOOL</span>;
}
<span class="kw">const</span> <span class="ident">DEBUG_PROCESS</span>: <span class="ident">DWORD</span> <span class="op">=</span> <span class="number">1</span>;
<span class="kw">const</span> <span class="ident">EXIT_PROCESS_DEBUG_EVENT</span>: <span class="ident">DWORD</span> <span class="op">=</span> <span class="number">5</span>;
<span class="kw">const</span> <span class="ident">DBG_EXCEPTION_NOT_HANDLED</span>: <span class="ident">DWORD</span> <span class="op">=</span> <span class="number">0x80010001</span>;
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">child</span> <span class="op">=</span> <span class="ident">Command</span>::<span class="ident">new</span>(<span class="string">"cmd"</span>)
.<span class="ident">creation_flags</span>(<span class="ident">DEBUG_PROCESS</span>)
.<span class="ident">stdin</span>(<span class="ident">Stdio</span>::<span class="ident">piped</span>()).<span class="ident">spawn</span>().<span class="ident">unwrap</span>();
<span class="ident">child</span>.<span class="ident">stdin</span>.<span class="ident">take</span>().<span class="ident">unwrap</span>().<span class="ident">write_all</span>(<span class="string">b"exit\r\n"</span>).<span class="ident">unwrap</span>();
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">events</span> <span class="op">=</span> <span class="number">0</span>;
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">event</span> <span class="op">=</span> <span class="ident">DEBUG_EVENT</span> {
<span class="ident">event_code</span>: <span class="number">0</span>,
<span class="ident">process_id</span>: <span class="number">0</span>,
<span class="ident">thread_id</span>: <span class="number">0</span>,
<span class="ident">_junk</span>: [<span class="number">0</span>; <span class="number">164</span>],
};
<span class="kw">loop</span> {
<span class="kw">if</span> <span class="kw">unsafe</span> { <span class="ident">WaitForDebugEvent</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">event</span> <span class="kw">as</span> <span class="kw-2">*</span><span class="kw-2">mut</span> <span class="ident">DEBUG_EVENT</span>, <span class="ident">INFINITE</span>) } <span class="op">==</span> <span class="number">0</span> {
<span class="macro">panic</span><span class="macro">!</span>(<span class="string">"WaitForDebugEvent failed!"</span>);
}
<span class="ident">events</span> <span class="op">+=</span> <span class="number">1</span>;
<span class="kw">if</span> <span class="ident">event</span>.<span class="ident">event_code</span> <span class="op">==</span> <span class="ident">EXIT_PROCESS_DEBUG_EVENT</span> {
<span class="kw">break</span>;
}
<span class="kw">if</span> <span class="kw">unsafe</span> { <span class="ident">ContinueDebugEvent</span>(<span class="ident">event</span>.<span class="ident">process_id</span>,
<span class="ident">event</span>.<span class="ident">thread_id</span>,
<span class="ident">DBG_EXCEPTION_NOT_HANDLED</span>) } <span class="op">==</span> <span class="number">0</span> {
<span class="macro">panic</span><span class="macro">!</span>(<span class="string">"ContinueDebugEvent failed!"</span>);
}
}
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">events</span> <span class="op">></span> <span class="number">0</span>);
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">test_command_implements_send</span>() {
<span class="kw">fn</span> <span class="ident">take_send_type</span><span class="op"><</span><span class="ident">T</span>: <span class="ident">Send</span><span class="op">></span>(<span class="kw">_</span>: <span class="ident">T</span>) {}
<span class="ident">take_send_type</span>(<span class="ident">Command</span>::<span class="ident">new</span>(<span class="string">""</span>))
}
}
</pre>
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