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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Unix domain sockets stubs for Plan 9
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// UnixConn is an implementation of the Conn interface
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// for connections to Unix domain sockets.
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// Implementation of the Conn interface - see Conn for documentation.
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// Read implements the Conn Read method.
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func (c *UnixConn) Read(b []byte) (n int, err error) {
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return 0, syscall.EPLAN9
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// Write implements the Conn Write method.
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func (c *UnixConn) Write(b []byte) (n int, err error) {
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return 0, syscall.EPLAN9
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// Close closes the Unix domain connection.
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func (c *UnixConn) Close() error {
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// LocalAddr returns the local network address, a *UnixAddr.
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// Unlike in other protocols, LocalAddr is usually nil for dialed connections.
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func (c *UnixConn) LocalAddr() Addr {
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// RemoteAddr returns the remote network address, a *UnixAddr.
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// Unlike in other protocols, RemoteAddr is usually nil for connections
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// accepted by a listener.
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func (c *UnixConn) RemoteAddr() Addr {
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// SetDeadline implements the Conn SetDeadline method.
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func (c *UnixConn) SetDeadline(t time.Time) error {
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// SetReadDeadline implements the Conn SetReadDeadline method.
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func (c *UnixConn) SetReadDeadline(t time.Time) error {
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// SetWriteDeadline implements the Conn SetWriteDeadline method.
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func (c *UnixConn) SetWriteDeadline(t time.Time) error {
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// UnixConn is an implementation of the Conn interface for connections
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// to Unix domain sockets.
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type UnixConn struct {
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// ReadFromUnix reads a packet from c, copying the payload into b. It
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// returns the number of bytes copied into b and the source address of
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// ReadFromUnix can be made to time out and return an error with
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// Timeout() == true after a fixed time limit; see SetDeadline and
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func (c *UnixConn) ReadFromUnix(b []byte) (int, *UnixAddr, error) {
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return 0, nil, syscall.EPLAN9
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// ReadFrom implements the PacketConn ReadFrom method.
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func (c *UnixConn) ReadFrom(b []byte) (n int, addr Addr, err error) {
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func (c *UnixConn) ReadFrom(b []byte) (int, Addr, error) {
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return 0, nil, syscall.EPLAN9
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// ReadMsgUnix reads a packet from c, copying the payload into b and
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// the associated out-of-band data into oob. It returns the number of
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// bytes copied into b, the number of bytes copied into oob, the flags
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// that were set on the packet, and the source address of the packet.
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func (c *UnixConn) ReadMsgUnix(b, oob []byte) (n, oobn, flags int, addr *UnixAddr, err error) {
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return 0, 0, 0, nil, syscall.EPLAN9
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// WriteToUnix writes a packet to addr via c, copying the payload from b.
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// WriteToUnix can be made to time out and return an error with
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// Timeout() == true after a fixed time limit; see SetDeadline and
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// SetWriteDeadline. On packet-oriented connections, write timeouts
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func (c *UnixConn) WriteToUnix(b []byte, addr *UnixAddr) (int, error) {
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return 0, syscall.EPLAN9
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// WriteTo implements the PacketConn WriteTo method.
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func (c *UnixConn) WriteTo(b []byte, addr Addr) (n int, err error) {
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func (c *UnixConn) WriteTo(b []byte, addr Addr) (int, error) {
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return 0, syscall.EPLAN9
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// WriteMsgUnix writes a packet to addr via c, copying the payload
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// from b and the associated out-of-band data from oob. It returns
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// the number of payload and out-of-band bytes written.
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func (c *UnixConn) WriteMsgUnix(b, oob []byte, addr *UnixAddr) (n, oobn int, err error) {
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return 0, 0, syscall.EPLAN9
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// CloseRead shuts down the reading side of the Unix domain connection.
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// Most callers should just use Close.
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func (c *UnixConn) CloseRead() error {
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// CloseWrite shuts down the writing side of the Unix domain connection.
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// Most callers should just use Close.
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func (c *UnixConn) CloseWrite() error {
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// DialUnix connects to the remote address raddr on the network net,
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// which must be "unix" or "unixgram". If laddr is not nil, it is used
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// as the local address for the connection.
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func DialUnix(net string, laddr, raddr *UnixAddr) (c *UnixConn, err error) {
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return nil, syscall.EPLAN9
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// UnixListener is a Unix domain socket listener.
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// Clients should typically use variables of type Listener
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// instead of assuming Unix domain sockets.
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type UnixListener bool
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// ListenUnix announces on the Unix domain socket laddr and returns a Unix listener.
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// Net must be "unix" (stream sockets).
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func ListenUnix(net string, laddr *UnixAddr) (l *UnixListener, err error) {
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return nil, syscall.EPLAN9
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// Accept implements the Accept method in the Listener interface;
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// it waits for the next call and returns a generic Conn.
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func (l *UnixListener) Accept() (c Conn, err error) {
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return nil, syscall.EPLAN9
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// Close stops listening on the Unix address.
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// Already accepted connections are not closed.
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// which must be "unix", "unixgram" or "unixpacket". If laddr is not
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// nil, it is used as the local address for the connection.
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func DialUnix(net string, laddr, raddr *UnixAddr) (*UnixConn, error) {
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return dialUnix(net, laddr, raddr, noDeadline)
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func dialUnix(net string, laddr, raddr *UnixAddr, deadline time.Time) (*UnixConn, error) {
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return nil, syscall.EPLAN9
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// UnixListener is a Unix domain socket listener. Clients should
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// typically use variables of type Listener instead of assuming Unix
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type UnixListener struct{}
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// ListenUnix announces on the Unix domain socket laddr and returns a
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// Unix listener. The network net must be "unix" or "unixpacket".
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func ListenUnix(net string, laddr *UnixAddr) (*UnixListener, error) {
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return nil, syscall.EPLAN9
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// AcceptUnix accepts the next incoming call and returns the new
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// connection and the remote address.
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func (l *UnixListener) AcceptUnix() (*UnixConn, error) {
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return nil, syscall.EPLAN9
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// Accept implements the Accept method in the Listener interface; it
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// waits for the next call and returns a generic Conn.
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func (l *UnixListener) Accept() (Conn, error) {
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return nil, syscall.EPLAN9
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// Close stops listening on the Unix address. Already accepted
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// connections are not closed.
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func (l *UnixListener) Close() error {
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return syscall.EPLAN9
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// Addr returns the listener's network address.
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func (l *UnixListener) Addr() Addr { return nil }
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// SetDeadline sets the deadline associated with the listener.
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// A zero time value disables the deadline.
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func (l *UnixListener) SetDeadline(t time.Time) error {
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return syscall.EPLAN9
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// File returns a copy of the underlying os.File, set to blocking
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// mode. It is the caller's responsibility to close f when finished.
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// Closing l does not affect f, and closing f does not affect l.
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// The returned os.File's file descriptor is different from the
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// connection's. Attempting to change properties of the original
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// using this duplicate may or may not have the desired effect.
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func (l *UnixListener) File() (*os.File, error) {
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return nil, syscall.EPLAN9
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// ListenUnixgram listens for incoming Unix datagram packets addressed
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// to the local address laddr. The network net must be "unixgram".
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// The returned connection's ReadFrom and WriteTo methods can be used
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// to receive and send packets with per-packet addressing.
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func ListenUnixgram(net string, laddr *UnixAddr) (*UnixConn, error) {
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return nil, syscall.EPLAN9
added
removed
src/pkg/net/unixsock_plan9.go
