Struct std::process::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
impl AsFd for ChildStdinAvailable on Unix only.impl AsHandle for ChildStdinAvailable on Windows only.impl AsRawFd for ChildStdinAvailable on Unix only.impl AsRawHandle for ChildStdinAvailable on Windows only.impl Debug for ChildStdinfn fmt(&self, f: &mut Formatter<'_>) -> Result
Formats the value using the given formatter. Read more
impl From<ChildStdin> for OwnedFdAvailable on Unix only.fn from(child_stdin: ChildStdin) -> OwnedFd
Converts to this type from the input type.
impl From<ChildStdin> for OwnedHandleAvailable on Windows only.fn from(child_stdin: ChildStdin) -> OwnedHandle
Converts to this type from the input type.
impl From<ChildStdin> for Stdiofn from(child: ChildStdin) -> StdioConverts 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 consoleimpl From<OwnedFd> for ChildStdinAvailable on Unix only.Create a ChildStdin from the provided OwnedFd.
The provided file descriptor must point to a pipe with the CLOEXEC flag set.
fn from(fd: OwnedFd) -> ChildStdin ⓘ
Converts to this type from the input type.
impl From<OwnedHandle> for ChildStdinAvailable on Windows only.Create 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.
fn from(handle: OwnedHandle) -> ChildStdin ⓘ
Converts to this type from the input type.
impl IntoRawFd for ChildStdinAvailable on Unix only.fn into_raw_fd(self) -> RawFd
Consumes this object, returning the raw underlying file descriptor. Read more
impl IntoRawHandle for ChildStdinAvailable on Windows only.fn into_raw_handle(self) -> RawHandle
Consumes this object, returning the raw underlying handle. Read more
impl Write for &ChildStdinfn write(&mut self, buf: &[u8]) -> Result<usize>
Write a buffer into this writer, returning how many bytes were written. Read more
fn write_vectored(&mut self, bufs: &[IoSlice<'_>]) -> Result<usize>fn is_write_vectored(&self) -> bool🔬This is a nightly-only experimental API. (
can_vector #69941)
fn flush(&mut self) -> Result<()>
Flush this output stream, ensuring that all intermediately buffered contents reach their destination. Read more
fn write_all(&mut self, buf: &[u8]) -> Result<()>
Attempts to write an entire buffer into this writer. Read more
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
fn write_fmt(&mut self, fmt: Arguments<'_>) -> Result<()>
Writes a formatted string into this writer, returning any error encountered. Read more
fn by_ref(&mut self) -> &mut Self
where
Self: Sized,
Creates a “by reference” adapter for this instance of
Write. Read more
impl Write for ChildStdinfn write(&mut self, buf: &[u8]) -> Result<usize>
Write a buffer into this writer, returning how many bytes were written. Read more
fn write_vectored(&mut self, bufs: &[IoSlice<'_>]) -> Result<usize>fn is_write_vectored(&self) -> bool🔬This is a nightly-only experimental API. (
can_vector #69941)
fn flush(&mut self) -> Result<()>
Flush this output stream, ensuring that all intermediately buffered contents reach their destination. Read more
fn write_all(&mut self, buf: &[u8]) -> Result<()>
Attempts to write an entire buffer into this writer. Read more
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
fn write_fmt(&mut self, fmt: Arguments<'_>) -> Result<()>
Writes a formatted string into this writer, returning any error encountered. Read more
fn by_ref(&mut self) -> &mut Self
where
Self: Sized,
Creates a “by reference” adapter for this instance of
Write. Read more
Auto Trait Implementations
impl RefUnwindSafe for ChildStdinimpl Send for ChildStdinimpl Sync for ChildStdinimpl Unpin for ChildStdinimpl UnwindSafe for ChildStdinBlanket Implementations
impl<T> Any for T
where
T: 'static + ?Sized,impl<T> Borrow<T> for T
where
T: ?Sized,impl<T> BorrowMut<T> for T
where
T: ?Sized,impl<T> From<T> for Tfn from(t: T) -> TReturns the argument unchanged.
impl<T, U> Into<U> for T
where
U: From<T>,fn into(self) -> UCalls U::from(self).
That is, this conversion is whatever the implementation of From<T> for U chooses to do.
impl<T, U> TryFrom<U> for T
where
U: Into<T>,type Error = Infallible
The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
Performs the conversion.
impl<T, U> TryInto<U> for T
where
U: TryFrom<T>,type Error = <U as TryFrom<T>>::Error
The type returned in the event of a conversion error.
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