Struct Fd 

pub struct Fd(/* private fields */);

Generic file descriptor wrapper with file type information.

Implementations

impl Fd

pub fn socket_domain(&self) -> Result<AddressFamily, Error>

Determine socket communication domain.

pub fn socket_type(&self) -> Result<SockType, Error>

Determine socket type.

pub fn socket_protocol(&self) -> Result<Option<SockProtocol>, Error>

Determine socket protocol.

pub fn is_listening(&self) -> Result<bool, Error>

Returns true if the socket is accepting connections.

pub fn is_writeable(&self) -> Result<bool, Error>

Returns true if the file is writeable.

pub unsafe fn try_from(raw: impl IntoRawFd) -> Result<Self, Error>

Construct an Fd from a raw file descriptor.

The file will have its close‐on‐exec flag set.

Safety

The file descriptor must be either unowned or exclusively owned.

pub fn into<T: FromRawFd>(self) -> T

Convert an Fd via raw file descriptor.

While safe, care should be taken to ensure that the semantics of the conversion target fit the type of file represented by the descriptor.

Trait Implementations

impl AsFd for Fd

fn as_fd(&self) -> BorrowedFd<'_>

Borrows the file descriptor.

impl AsRawFd for Fd

fn as_raw_fd(&self) -> RawFd

Extracts the raw file descriptor.

impl Debug for Fd

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl FileTypeExt for Fd

fn is_block_device(&self) -> bool

Returns true if this file type is a block device.

fn is_char_device(&self) -> bool

Returns true if this file type is a char device.

fn is_fifo(&self) -> bool

Returns true if this file type is a fifo.

fn is_socket(&self) -> bool

Returns true if this file type is a socket.

impl From<Fd> for OwnedFd

fn from(fd: Fd) -> Self

Converts to this type from the input type.

impl IntoRawFd for Fd

fn into_raw_fd(self) -> RawFd

Consumes this object, returning the raw underlying file descriptor.

impl TryFrom<Fd> for Fd

type Error = Errno

The type returned in the event of a conversion error.

fn try_from(fd: Fd) -> Result<Self, Self::Error>

Performs the conversion.