Trait CapStdExtCommandExt 

pub trait CapStdExtCommandExt {
    // Required methods
    fn take_fd_n(&mut self, fd: Arc<OwnedFd>, target: i32) -> &mut Self;
    fn cwd_dir(&mut self, dir: Dir) -> &mut Self;
    fn lifecycle_bind_to_parent_thread(&mut self) -> &mut Self;
}

Extension trait for std::process::Command.

Required Methods

fn take_fd_n(&mut self, fd: Arc<OwnedFd>, target: i32) -> &mut Self

Pass a file descriptor into the target process.

fn cwd_dir(&mut self, dir: Dir) -> &mut Self

Use the given directory as the current working directory for the process.

fn lifecycle_bind_to_parent_thread(&mut self) -> &mut Self

On Linux, arrange for [SIGTERM] to be delivered to the child if the parent thread exits. This helps avoid leaking child processes if the parent crashes for example.

IMPORTANT

Due to the semantics of https://man7.org/linux/man-pages/man2/prctl.2.html this will cause the child to exit when the parent thread (not process) exits. In particular this can become problematic when used with e.g. a threadpool such as Tokio’s https://kobzol.github.io/rust/2025/02/23/tokio-plus-prctl-equals-nasty-bug.html.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementations on Foreign Types

impl CapStdExtCommandExt for Command

fn take_fd_n(&mut self, fd: Arc<OwnedFd>, target: i32) -> &mut Self

fn cwd_dir(&mut self, dir: Dir) -> &mut Self

fn lifecycle_bind_to_parent_thread(&mut self) -> &mut Self

Implementors