Struct std::process::ChildStdin

1.0.0 · source ·

pub struct ChildStdin { /* private fields */ }

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

1.63.0 · source

impl AsFd for ChildStdin

Available on Unix only.

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fn as_fd(&self) -> BorrowedFd<'_>

Borrows the file descriptor. Read more

1.63.0 · source

impl AsHandle for ChildStdin

Available on Windows only.

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fn as_handle(&self) -> BorrowedHandle<'_>

Borrows the handle. Read more

1.2.0 · source

impl AsRawFd for ChildStdin

Available on Unix only.

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fn as_raw_fd(&self) -> RawFd

Extracts the raw file descriptor. Read more

1.2.0 · source

impl AsRawHandle for ChildStdin

Available on Windows only.

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fn as_raw_handle(&self) -> RawHandle

Extracts the raw handle. Read more

1.16.0 · source

impl Debug for ChildStdin

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more

1.63.0 · source

impl From<ChildStdin> for OwnedFd

Available on Unix only.

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fn from(child_stdin: ChildStdin) -> OwnedFd

Converts to this type from the input type.

1.63.0 · source

impl From<ChildStdin> for OwnedHandle

Available on Windows only.

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fn from(child_stdin: ChildStdin) -> OwnedHandle

Converts to this type from the input type.

1.20.0 · source

impl From<ChildStdin> for Stdio

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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

Run

1.4.0 · source

impl IntoRawFd for ChildStdin

Available on Unix only.

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fn into_raw_fd(self) -> RawFd

Consumes this object, returning the raw underlying file descriptor. Read more

1.4.0 · source

impl IntoRawHandle for ChildStdin

Available on Windows only.

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fn into_raw_handle(self) -> RawHandle

Consumes this object, returning the raw underlying handle. Read more

1.48.0 · source

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. Read more

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

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

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fn is_write_vectored(&self) -> bool

🔬 This is a nightly-only experimental API. (can_vector #69941)

Determines if this Writer has an efficient write_vectored implementation. Read more

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fn flush(&mut self) -> Result<()>

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

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

Attempts to write an entire buffer into this writer. Read more

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fn write_all_vectored(&mut self, bufs: &mut [IoSlice<'_>]) -> Result<()>

🔬 This is a nightly-only experimental API. (write_all_vectored #70436)

Attempts to write multiple buffers into this writer. Read more

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fn write_fmt(&mut self, fmt: Arguments<'_>) -> Result<()>

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

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

Creates a "by reference" adapter for this instance of Write. Read more

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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. Read more

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

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

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fn is_write_vectored(&self) -> bool

🔬 This is a nightly-only experimental API. (can_vector #69941)

Determines if this Writer has an efficient write_vectored implementation. Read more

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fn flush(&mut self) -> Result<()>

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

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

Attempts to write an entire buffer into this writer. Read more

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fn write_all_vectored(&mut self, bufs: &mut [IoSlice<'_>]) -> Result<()>

🔬 This is a nightly-only experimental API. (write_all_vectored #70436)

Attempts to write multiple buffers into this writer. Read more

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fn write_fmt(&mut self, fmt: Arguments<'_>) -> Result<()>

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

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

Creates a "by reference" adapter for this instance of Write. Read more