github.com/shijuvar/go@v0.0.0-20141209052335-e8f13700b70c/src/net/unixsock_plan9.go (about) 1 // Copyright 2009 The Go Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style 3 // license that can be found in the LICENSE file. 4 5 package net 6 7 import ( 8 "os" 9 "syscall" 10 "time" 11 ) 12 13 // UnixConn is an implementation of the Conn interface for connections 14 // to Unix domain sockets. 15 type UnixConn struct { 16 conn 17 } 18 19 // ReadFromUnix reads a packet from c, copying the payload into b. It 20 // returns the number of bytes copied into b and the source address of 21 // the packet. 22 // 23 // ReadFromUnix can be made to time out and return an error with 24 // Timeout() == true after a fixed time limit; see SetDeadline and 25 // SetReadDeadline. 26 func (c *UnixConn) ReadFromUnix(b []byte) (int, *UnixAddr, error) { 27 return 0, nil, syscall.EPLAN9 28 } 29 30 // ReadFrom implements the PacketConn ReadFrom method. 31 func (c *UnixConn) ReadFrom(b []byte) (int, Addr, error) { 32 return 0, nil, syscall.EPLAN9 33 } 34 35 // ReadMsgUnix reads a packet from c, copying the payload into b and 36 // the associated out-of-band data into oob. It returns the number of 37 // bytes copied into b, the number of bytes copied into oob, the flags 38 // that were set on the packet, and the source address of the packet. 39 func (c *UnixConn) ReadMsgUnix(b, oob []byte) (n, oobn, flags int, addr *UnixAddr, err error) { 40 return 0, 0, 0, nil, syscall.EPLAN9 41 } 42 43 // WriteToUnix writes a packet to addr via c, copying the payload from b. 44 // 45 // WriteToUnix can be made to time out and return an error with 46 // Timeout() == true after a fixed time limit; see SetDeadline and 47 // SetWriteDeadline. On packet-oriented connections, write timeouts 48 // are rare. 49 func (c *UnixConn) WriteToUnix(b []byte, addr *UnixAddr) (int, error) { 50 return 0, syscall.EPLAN9 51 } 52 53 // WriteTo implements the PacketConn WriteTo method. 54 func (c *UnixConn) WriteTo(b []byte, addr Addr) (int, error) { 55 return 0, syscall.EPLAN9 56 } 57 58 // WriteMsgUnix writes a packet to addr via c, copying the payload 59 // from b and the associated out-of-band data from oob. It returns 60 // the number of payload and out-of-band bytes written. 61 func (c *UnixConn) WriteMsgUnix(b, oob []byte, addr *UnixAddr) (n, oobn int, err error) { 62 return 0, 0, syscall.EPLAN9 63 } 64 65 // CloseRead shuts down the reading side of the Unix domain connection. 66 // Most callers should just use Close. 67 func (c *UnixConn) CloseRead() error { 68 return syscall.EPLAN9 69 } 70 71 // CloseWrite shuts down the writing side of the Unix domain connection. 72 // Most callers should just use Close. 73 func (c *UnixConn) CloseWrite() error { 74 return syscall.EPLAN9 75 } 76 77 // DialUnix connects to the remote address raddr on the network net, 78 // which must be "unix", "unixgram" or "unixpacket". If laddr is not 79 // nil, it is used as the local address for the connection. 80 func DialUnix(net string, laddr, raddr *UnixAddr) (*UnixConn, error) { 81 return dialUnix(net, laddr, raddr, noDeadline) 82 } 83 84 func dialUnix(net string, laddr, raddr *UnixAddr, deadline time.Time) (*UnixConn, error) { 85 return nil, syscall.EPLAN9 86 } 87 88 // UnixListener is a Unix domain socket listener. Clients should 89 // typically use variables of type Listener instead of assuming Unix 90 // domain sockets. 91 type UnixListener struct{} 92 93 // ListenUnix announces on the Unix domain socket laddr and returns a 94 // Unix listener. The network net must be "unix" or "unixpacket". 95 func ListenUnix(net string, laddr *UnixAddr) (*UnixListener, error) { 96 return nil, syscall.EPLAN9 97 } 98 99 // AcceptUnix accepts the next incoming call and returns the new 100 // connection. 101 func (l *UnixListener) AcceptUnix() (*UnixConn, error) { 102 return nil, syscall.EPLAN9 103 } 104 105 // Accept implements the Accept method in the Listener interface; it 106 // waits for the next call and returns a generic Conn. 107 func (l *UnixListener) Accept() (Conn, error) { 108 return nil, syscall.EPLAN9 109 } 110 111 // Close stops listening on the Unix address. Already accepted 112 // connections are not closed. 113 func (l *UnixListener) Close() error { 114 return syscall.EPLAN9 115 } 116 117 // Addr returns the listener's network address. 118 func (l *UnixListener) Addr() Addr { return nil } 119 120 // SetDeadline sets the deadline associated with the listener. 121 // A zero time value disables the deadline. 122 func (l *UnixListener) SetDeadline(t time.Time) error { 123 return syscall.EPLAN9 124 } 125 126 // File returns a copy of the underlying os.File, set to blocking 127 // mode. It is the caller's responsibility to close f when finished. 128 // Closing l does not affect f, and closing f does not affect l. 129 // 130 // The returned os.File's file descriptor is different from the 131 // connection's. Attempting to change properties of the original 132 // using this duplicate may or may not have the desired effect. 133 func (l *UnixListener) File() (*os.File, error) { 134 return nil, syscall.EPLAN9 135 } 136 137 // ListenUnixgram listens for incoming Unix datagram packets addressed 138 // to the local address laddr. The network net must be "unixgram". 139 // The returned connection's ReadFrom and WriteTo methods can be used 140 // to receive and send packets with per-packet addressing. 141 func ListenUnixgram(net string, laddr *UnixAddr) (*UnixConn, error) { 142 return nil, syscall.EPLAN9 143 }