Trait conch_runtime::env::FileDescEnvironment

pub trait FileDescEnvironment {
    type FileHandle;
    fn file_desc(&self, fd: Fd) -> Option<(&Self::FileHandle, Permissions)>;
    fn set_file_desc(
        &mut self, 
        fd: Fd, 
        handle: Self::FileHandle, 
        perms: Permissions
    );
    fn close_file_desc(&mut self, fd: Fd);
}

An interface for setting and getting shell file descriptors.

Associated Types

type FileHandle

A file handle (or wrapper) to associate with shell file descriptors.

Required Methods

fn file_desc(&self, fd: Fd) -> Option<(&Self::FileHandle, Permissions)>

Get the permissions and a handle associated with an opened file descriptor.

fn set_file_desc(
    &mut self,
    fd: Fd,
    handle: Self::FileHandle,
    perms: Permissions
)

Associate a file descriptor with a given handle and permissions.

fn close_file_desc(&mut self, fd: Fd)

Treat the specified file descriptor as closed for the current environment.

Implementations on Foreign Types

impl<'a, T: ?Sized + FileDescEnvironment> FileDescEnvironment for &'a mut T

type FileHandle = T::FileHandle

fn file_desc(&self, fd: Fd) -> Option<(&Self::FileHandle, Permissions)>

fn set_file_desc(
    &mut self,
    fd: Fd,
    handle: Self::FileHandle,
    perms: Permissions
)

fn close_file_desc(&mut self, fd: Fd)

Implementors

• impl<A, IO, FD, L, V, EX, WD, N, ERR> FileDescEnvironment for Env<A, IO, FD, L, V, EX, WD, N, ERR> where
    FD: FileDescEnvironment,
    N: Hash + Eq,  type FileHandle = FD::FileHandle;
• impl<A, IO, FD, L, V, EX, WD, N, ERR> FileDescEnvironment for AtomicEnv<A, IO, FD, L, V, EX, WD, N, ERR> where
    FD: FileDescEnvironment,
    N: Hash + Eq,  type FileHandle = FD::FileHandle;
• impl<T: Clone + Eq> FileDescEnvironment for FileDescEnv<T> type FileHandle = T;
• impl<T: Clone + Eq> FileDescEnvironment for AtomicFileDescEnv<T> type FileHandle = T;