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Struct ChildStdin

pub struct ChildStdin { /* private fields */ }

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

1.63.0Source

impl AsFd for ChildStdinAvailable on Unix only.

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

Available on Unix or HermitCore or target_os=trusty or WASI or target_os=motor only.

Borrows the file descriptor. Read more

1.63.0Source

impl AsHandle for ChildStdinAvailable on Windows only.

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

Borrows the handle. Read more

1.2.0Source

impl AsRawFd for ChildStdinAvailable on Unix only.

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fn as_raw_fd(&self) -> RawFd

Available on Unix or HermitCore or target_os=trusty or WASI or target_os=motor only.

Extracts the raw file descriptor. Read more

1.2.0Source

impl AsRawHandle for ChildStdinAvailable on Windows only.

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fn as_raw_handle(&self) -> RawHandle

Extracts the raw handle. Read more

1.16.0Source

impl Debug for ChildStdin

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

Formats the value using the given formatter. Read more

1.63.0Source

impl From<ChildStdin> for OwnedFdAvailable on Unix only.

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fn from(child_stdin: ChildStdin) -> OwnedFd

Takes ownership of a ChildStdin’s file descriptor.

1.63.0Source

impl From<ChildStdin> for OwnedHandleAvailable on Windows only.

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fn from(child_stdin: ChildStdin) -> OwnedHandle

Takes ownership of a ChildStdin’s file handle.

1.20.0Source

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

1.74.0Source

impl From<OwnedFd> for ChildStdinAvailable on Unix only.Creates a ChildStdin from the provided OwnedFd.

The provided file descriptor must point to a pipe with the CLOEXEC flag set.

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fn from(fd: OwnedFd) -> ChildStdin ⓘ

Converts to this type from the input type.

1.74.0Source

impl From<OwnedHandle> for ChildStdinAvailable on Windows only.Creates a ChildStdin from the provided OwnedHandle.

The provided handle must be asynchronous, as reading and writing from and to it is implemented using asynchronous APIs.

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fn from(handle: OwnedHandle) -> ChildStdin ⓘ

Converts to this type from the input type.

1.4.0Source

impl IntoRawFd for ChildStdinAvailable on Unix only.

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fn into_raw_fd(self) -> RawFd

Available on Unix or HermitCore or target_os=trusty or WASI or target_os=motor only.

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

1.4.0Source

impl IntoRawHandle for ChildStdinAvailable on Windows only.

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fn into_raw_handle(self) -> RawHandle

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

1.48.0Source

impl Write for &ChildStdin

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

Writes 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<()>

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

1.0.0Source

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

1.0.0Source

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

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

1.0.0Source

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

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

1.0.0Source

impl Write for ChildStdin

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

Writes 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<()>

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

1.0.0Source

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

1.0.0Source

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

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

1.0.0Source

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

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

Auto Trait Implementations

impl Freeze for ChildStdin

impl RefUnwindSafe for ChildStdin

impl Send for ChildStdin

impl Sync for ChildStdin

impl Unpin for ChildStdin

impl UnwindSafe for ChildStdin

Blanket Implementations

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impl<T> Any for Twhere
    T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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impl<T> Borrow<T> for Twhere
    T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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impl<T> BorrowMut<T> for Twhere
    T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for Twhere
    U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T, U> TryFrom<U> for Twhere
    U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.

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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.

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impl<T, U> TryInto<U> for Twhere
    U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.

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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.

© 2010 The Rust Project Developers
Licensed under the Apache License, Version 2.0 or the MIT license, at your option.
https://doc.rust-lang.org/std/process/struct.ChildStdin.html