Trait command_fds::CommandFdExt

pub trait CommandFdExt {
    // Required methods
    fn fd_mappings(
        &mut self,
        mappings: Vec<FdMapping>
    ) -> Result<&mut Self, FdMappingCollision>;
    fn preserved_fds(&mut self, fds: Vec<OwnedFd>) -> &mut Self;
}

Extension to add file descriptor mappings to a Command.

Required Methods

fn fd_mappings( &mut self, mappings: Vec<FdMapping> ) -> Result<&mut Self, FdMappingCollision>

Adds the given set of file descriptors to the command.

Warning: Calling this more than once on the same command may result in unexpected behaviour. In particular, it is not possible to check that two mappings applied separately don’t use the same child_fd. If there is such a collision then one will apply and the other will be lost.

Note that the Command takes ownership of the file descriptors, which means that they won’t be closed in the parent process until the Command is dropped.

fn preserved_fds(&mut self, fds: Vec<OwnedFd>) -> &mut Self

Adds the given set of file descriptors to be passed on to the child process when the command is run.

Note that the Command takes ownership of the file descriptors, which means that they won’t be closed in the parent process until the Command is dropped.

Object Safety

This trait is not object safe.

Implementations on Foreign Types

impl CommandFdExt for Command

fn fd_mappings( &mut self, mappings: Vec<FdMapping> ) -> Result<&mut Self, FdMappingCollision>

fn preserved_fds(&mut self, fds: Vec<OwnedFd>) -> &mut Self

Implementors