Struct SharedFd

pub struct SharedFd { /* private fields */ }

A raw file descriptor, opened for us by the environment.

The code does assume to own it, but it won’t close the file descriptor.

Implementations

impl SharedFd

pub unsafe fn from_env() -> Option<Self>

Available on crate features std and libc only.

Import a shared file descriptor based on environment variable SHM_SHARED_FDS.

Safety

Caller asserts that the environment variable has been set to a file descriptor that is not owned by any other resource.

pub unsafe fn from_listen(var: &ListenFd) -> Option<Self>

Available on crate feature libc only.

Import a shared file descriptor based on the contents that would be in the environment variable SHM_SHARED_FDS.

pub fn into_file(self) -> Result<MemFile, Error>

Available on crate features memfile and std only.

Open the file descriptor.

This can fail if for some reason the file descriptor does not refer to an anonymous memory file.

pub fn as_raw_fd(&self) -> RawFd

pub fn into_raw_fd(self) -> RawFd

Grab the raw fie descriptor.

Trait Implementations

impl AsRawFd for SharedFd

Available on crate feature std only.

fn as_raw_fd(&self) -> RawFd

Extracts the raw file descriptor.