Struct std::process::ChildStdin

[+] Show declaration

pub struct ChildStdin { /* fields omitted */ }

[−] Expand description

A handle to a child process's standard input (stdin).

This struct is used in the stdin field on Child.

When an instance of ChildStdin is dropped, the ChildStdin's underlying file handle will be closed. If the child process was blocked on input prior to being dropped, it will become unblocked after dropping.

Trait Implementations

impl Write for ChildStdin[+]

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fn write(&mut self, buf: &[u8]) -> Result<usize>[−]

Write a buffer into this writer, returning how many bytes were written.

fn write_vectored(&mut self, bufs: &[IoSlice]) -> Result<usize>[−]

Like write, except that it writes from a slice of buffers.

fn flush(&mut self) -> Result<()>[−]

Flush this output stream, ensuring that all intermediately buffered contents reach their destination.

fn write_all(&mut self, buf: &[u8]) -> Result<()>[−]

Attempts to write an entire buffer into this writer.

fn write_fmt(&mut self, fmt: Arguments) -> Result<()>[−]

Writes a formatted string into this writer, returning any error encountered.

Important traits for &'_ mut F

impl<'_, F> Future for &'_ mut F where
    F: Unpin + Future + ?Sized,  type Output = <F as Future>::Output;impl<'_, I> Iterator for &'_ mut I where
    I: Iterator + ?Sized,  type Item = <I as Iterator>::Item;impl<'_, R: Read + ?Sized> Read for &'_ mut Rimpl<'_, W: Write + ?Sized> Write for &'_ mut W

fn by_ref(&mut self) -> &mut Self where
    Self: Sized, [−]

Creates a "by reference" adaptor for this instance of Write.

impl AsRawFd for ChildStdin[+]

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fn as_raw_fd(&self) -> RawFd[−]

This is supported on Unix only.

Extracts the raw file descriptor.

impl IntoRawFd for ChildStdin[+]

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fn into_raw_fd(self) -> RawFd[−]

This is supported on Unix only.

Consumes this object, returning the raw underlying file descriptor.

impl AsRawHandle for ChildStdin[+]

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fn as_raw_handle(&self) -> RawHandle[−]

This is supported on Windows only.

Extracts the raw handle, without taking any ownership.

impl IntoRawHandle for ChildStdin[+]

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fn into_raw_handle(self) -> RawHandle[−]

This is supported on Windows only.

Consumes this object, returning the raw underlying handle.

impl Debug for ChildStdin[+]

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fn fmt(&self, f: &mut Formatter) -> Result[−]

Formats the value using the given formatter.

impl From<ChildStdin> for Stdio[+]

fn from(child: ChildStdin) -> Stdio[−]

Converts a ChildStdin into a Stdio

Examples

ChildStdin will be converted to Stdio using Stdio::from under the hood.

use std::process::{Command, Stdio};

let reverse = Command::new("rev")
    .stdin(Stdio::piped())
    .spawn()
    .expect("failed reverse command");

let _echo = Command::new("echo")
    .arg("Hello, world!")
    .stdout(reverse.stdin.unwrap()) // Converted into a Stdio here
    .output()
    .expect("failed echo command");

// "!dlrow ,olleH" echoed to console