// File returns a copy of the underlying os.File.
// It is the caller's responsibility to close f when finished.
// Closing l does not affect f, and closing f does not affect l.
//
// The returned os.File's file descriptor is different from the
// connection's. Attempting to change properties of the original
// using this duplicate may or may not have the desired effect.
func (l *UnixListener) File() (f *os.File, err error) {
if !l.ok() {
return nil, syscall.EINVAL
}
f, err = l.file()
if err != nil {
err = &OpError{Op: "file", Net: l.fd.net, Source: nil, Addr: l.fd.laddr, Err: err}
}
return
}
// ListenUnix acts like Listen for Unix networks.
//
// The network must be "unix" or "unixpacket".
func ListenUnix(network string, laddr *UnixAddr) (*UnixListener, error) {
switch network {
case "unix", "unixpacket":
default:
return nil, &OpError{Op: "listen", Net: network, Source: nil, Addr: laddr.opAddr(), Err: UnknownNetworkError(network)}
}
if laddr == nil {
return nil, &OpError{Op: "listen", Net: network, Source: nil, Addr: laddr.opAddr(), Err: errMissingAddress}
}
sl := &sysListener{network: network, address: laddr.String()}
ln, err := sl.listenUnix(context.Background(), laddr)
if err != nil {
return nil, &OpError{Op: "listen", Net: network, Source: nil, Addr: laddr.opAddr(), Err: err}
}
return ln, nil
}
// ListenUnixgram acts like ListenPacket for Unix networks.
//
// The network must be "unixgram".
func ListenUnixgram(network string, laddr *UnixAddr) (*UnixConn, error) {
switch network {
case "unixgram":
default:
return nil, &OpError{Op: "listen", Net: network, Source: nil, Addr: laddr.opAddr(), Err: UnknownNetworkError(network)}
}
if laddr == nil {
return nil, &OpError{Op: "listen", Net: network, Source: nil, Addr: nil, Err: errMissingAddress}
}
sl := &sysListener{network: network, address: laddr.String()}
c, err := sl.listenUnixgram(context.Background(), laddr)
if err != nil {
return nil, &OpError{Op: "listen", Net: network, Source: nil, Addr: laddr.opAddr(), Err: err}
}
return c, nil
}