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path: root/src/pkg/net/unixsock_posix.go
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Diffstat (limited to 'src/pkg/net/unixsock_posix.go')
-rw-r--r--src/pkg/net/unixsock_posix.go362
1 files changed, 0 insertions, 362 deletions
diff --git a/src/pkg/net/unixsock_posix.go b/src/pkg/net/unixsock_posix.go
deleted file mode 100644
index 3c2e78bdc..000000000
--- a/src/pkg/net/unixsock_posix.go
+++ /dev/null
@@ -1,362 +0,0 @@
-// Copyright 2009 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// +build darwin dragonfly freebsd linux nacl netbsd openbsd solaris windows
-
-package net
-
-import (
- "errors"
- "os"
- "syscall"
- "time"
-)
-
-func unixSocket(net string, laddr, raddr sockaddr, mode string, deadline time.Time) (*netFD, error) {
- var sotype int
- switch net {
- case "unix":
- sotype = syscall.SOCK_STREAM
- case "unixgram":
- sotype = syscall.SOCK_DGRAM
- case "unixpacket":
- sotype = syscall.SOCK_SEQPACKET
- default:
- return nil, UnknownNetworkError(net)
- }
-
- switch mode {
- case "dial":
- if laddr != nil && laddr.isWildcard() {
- laddr = nil
- }
- if raddr != nil && raddr.isWildcard() {
- raddr = nil
- }
- if raddr == nil && (sotype != syscall.SOCK_DGRAM || laddr == nil) {
- return nil, errMissingAddress
- }
- case "listen":
- default:
- return nil, errors.New("unknown mode: " + mode)
- }
-
- fd, err := socket(net, syscall.AF_UNIX, sotype, 0, false, laddr, raddr, deadline)
- if err != nil {
- return nil, err
- }
- return fd, nil
-}
-
-func sockaddrToUnix(sa syscall.Sockaddr) Addr {
- if s, ok := sa.(*syscall.SockaddrUnix); ok {
- return &UnixAddr{Name: s.Name, Net: "unix"}
- }
- return nil
-}
-
-func sockaddrToUnixgram(sa syscall.Sockaddr) Addr {
- if s, ok := sa.(*syscall.SockaddrUnix); ok {
- return &UnixAddr{Name: s.Name, Net: "unixgram"}
- }
- return nil
-}
-
-func sockaddrToUnixpacket(sa syscall.Sockaddr) Addr {
- if s, ok := sa.(*syscall.SockaddrUnix); ok {
- return &UnixAddr{Name: s.Name, Net: "unixpacket"}
- }
- return nil
-}
-
-func sotypeToNet(sotype int) string {
- switch sotype {
- case syscall.SOCK_STREAM:
- return "unix"
- case syscall.SOCK_DGRAM:
- return "unixgram"
- case syscall.SOCK_SEQPACKET:
- return "unixpacket"
- default:
- panic("sotypeToNet unknown socket type")
- }
-}
-
-func (a *UnixAddr) family() int {
- return syscall.AF_UNIX
-}
-
-func (a *UnixAddr) isWildcard() bool {
- return a == nil || a.Name == ""
-}
-
-func (a *UnixAddr) sockaddr(family int) (syscall.Sockaddr, error) {
- if a == nil {
- return nil, nil
- }
- return &syscall.SockaddrUnix{Name: a.Name}, nil
-}
-
-// UnixConn is an implementation of the Conn interface for connections
-// to Unix domain sockets.
-type UnixConn struct {
- conn
-}
-
-func newUnixConn(fd *netFD) *UnixConn { return &UnixConn{conn{fd}} }
-
-// ReadFromUnix reads a packet from c, copying the payload into b. It
-// returns the number of bytes copied into b and the source address of
-// the packet.
-//
-// ReadFromUnix can be made to time out and return an error with
-// Timeout() == true after a fixed time limit; see SetDeadline and
-// SetReadDeadline.
-func (c *UnixConn) ReadFromUnix(b []byte) (n int, addr *UnixAddr, err error) {
- if !c.ok() {
- return 0, nil, syscall.EINVAL
- }
- n, sa, err := c.fd.readFrom(b)
- switch sa := sa.(type) {
- case *syscall.SockaddrUnix:
- if sa.Name != "" {
- addr = &UnixAddr{Name: sa.Name, Net: sotypeToNet(c.fd.sotype)}
- }
- }
- return
-}
-
-// ReadFrom implements the PacketConn ReadFrom method.
-func (c *UnixConn) ReadFrom(b []byte) (int, Addr, error) {
- if !c.ok() {
- return 0, nil, syscall.EINVAL
- }
- n, addr, err := c.ReadFromUnix(b)
- return n, addr.toAddr(), err
-}
-
-// ReadMsgUnix reads a packet from c, copying the payload into b and
-// the associated out-of-band data into oob. It returns the number of
-// bytes copied into b, the number of bytes copied into oob, the flags
-// that were set on the packet, and the source address of the packet.
-func (c *UnixConn) ReadMsgUnix(b, oob []byte) (n, oobn, flags int, addr *UnixAddr, err error) {
- if !c.ok() {
- return 0, 0, 0, nil, syscall.EINVAL
- }
- n, oobn, flags, sa, err := c.fd.readMsg(b, oob)
- switch sa := sa.(type) {
- case *syscall.SockaddrUnix:
- if sa.Name != "" {
- addr = &UnixAddr{Name: sa.Name, Net: sotypeToNet(c.fd.sotype)}
- }
- }
- return
-}
-
-// WriteToUnix writes a packet to addr via c, copying the payload from b.
-//
-// WriteToUnix can be made to time out and return an error with
-// Timeout() == true after a fixed time limit; see SetDeadline and
-// SetWriteDeadline. On packet-oriented connections, write timeouts
-// are rare.
-func (c *UnixConn) WriteToUnix(b []byte, addr *UnixAddr) (n int, err error) {
- if !c.ok() {
- return 0, syscall.EINVAL
- }
- if c.fd.isConnected {
- return 0, &OpError{Op: "write", Net: c.fd.net, Addr: addr, Err: ErrWriteToConnected}
- }
- if addr == nil {
- return 0, &OpError{Op: "write", Net: c.fd.net, Addr: nil, Err: errMissingAddress}
- }
- if addr.Net != sotypeToNet(c.fd.sotype) {
- return 0, syscall.EAFNOSUPPORT
- }
- sa := &syscall.SockaddrUnix{Name: addr.Name}
- return c.fd.writeTo(b, sa)
-}
-
-// WriteTo implements the PacketConn WriteTo method.
-func (c *UnixConn) WriteTo(b []byte, addr Addr) (n int, err error) {
- if !c.ok() {
- return 0, syscall.EINVAL
- }
- a, ok := addr.(*UnixAddr)
- if !ok {
- return 0, &OpError{"write", c.fd.net, addr, syscall.EINVAL}
- }
- return c.WriteToUnix(b, a)
-}
-
-// WriteMsgUnix writes a packet to addr via c, copying the payload
-// from b and the associated out-of-band data from oob. It returns
-// the number of payload and out-of-band bytes written.
-func (c *UnixConn) WriteMsgUnix(b, oob []byte, addr *UnixAddr) (n, oobn int, err error) {
- if !c.ok() {
- return 0, 0, syscall.EINVAL
- }
- if c.fd.sotype == syscall.SOCK_DGRAM && c.fd.isConnected {
- return 0, 0, &OpError{Op: "write", Net: c.fd.net, Addr: addr, Err: ErrWriteToConnected}
- }
- if addr != nil {
- if addr.Net != sotypeToNet(c.fd.sotype) {
- return 0, 0, syscall.EAFNOSUPPORT
- }
- sa := &syscall.SockaddrUnix{Name: addr.Name}
- return c.fd.writeMsg(b, oob, sa)
- }
- return c.fd.writeMsg(b, oob, nil)
-}
-
-// CloseRead shuts down the reading side of the Unix domain connection.
-// Most callers should just use Close.
-func (c *UnixConn) CloseRead() error {
- if !c.ok() {
- return syscall.EINVAL
- }
- return c.fd.closeRead()
-}
-
-// CloseWrite shuts down the writing side of the Unix domain connection.
-// Most callers should just use Close.
-func (c *UnixConn) CloseWrite() error {
- if !c.ok() {
- return syscall.EINVAL
- }
- return c.fd.closeWrite()
-}
-
-// DialUnix connects to the remote address raddr on the network net,
-// which must be "unix", "unixgram" or "unixpacket". If laddr is not
-// nil, it is used as the local address for the connection.
-func DialUnix(net string, laddr, raddr *UnixAddr) (*UnixConn, error) {
- switch net {
- case "unix", "unixgram", "unixpacket":
- default:
- return nil, &OpError{Op: "dial", Net: net, Addr: raddr, Err: UnknownNetworkError(net)}
- }
- return dialUnix(net, laddr, raddr, noDeadline)
-}
-
-func dialUnix(net string, laddr, raddr *UnixAddr, deadline time.Time) (*UnixConn, error) {
- fd, err := unixSocket(net, laddr, raddr, "dial", deadline)
- if err != nil {
- return nil, &OpError{Op: "dial", Net: net, Addr: raddr, Err: err}
- }
- return newUnixConn(fd), nil
-}
-
-// UnixListener is a Unix domain socket listener. Clients should
-// typically use variables of type Listener instead of assuming Unix
-// domain sockets.
-type UnixListener struct {
- fd *netFD
- path string
-}
-
-// ListenUnix announces on the Unix domain socket laddr and returns a
-// Unix listener. The network net must be "unix" or "unixpacket".
-func ListenUnix(net string, laddr *UnixAddr) (*UnixListener, error) {
- switch net {
- case "unix", "unixpacket":
- default:
- return nil, &OpError{Op: "listen", Net: net, Addr: laddr, Err: UnknownNetworkError(net)}
- }
- if laddr == nil {
- return nil, &OpError{Op: "listen", Net: net, Addr: nil, Err: errMissingAddress}
- }
- fd, err := unixSocket(net, laddr, nil, "listen", noDeadline)
- if err != nil {
- return nil, &OpError{Op: "listen", Net: net, Addr: laddr, Err: err}
- }
- return &UnixListener{fd, fd.laddr.String()}, nil
-}
-
-// AcceptUnix accepts the next incoming call and returns the new
-// connection.
-func (l *UnixListener) AcceptUnix() (*UnixConn, error) {
- if l == nil || l.fd == nil {
- return nil, syscall.EINVAL
- }
- fd, err := l.fd.accept()
- if err != nil {
- return nil, err
- }
- c := newUnixConn(fd)
- return c, nil
-}
-
-// Accept implements the Accept method in the Listener interface; it
-// waits for the next call and returns a generic Conn.
-func (l *UnixListener) Accept() (c Conn, err error) {
- c1, err := l.AcceptUnix()
- if err != nil {
- return nil, err
- }
- return c1, nil
-}
-
-// Close stops listening on the Unix address. Already accepted
-// connections are not closed.
-func (l *UnixListener) Close() error {
- if l == nil || l.fd == nil {
- return syscall.EINVAL
- }
-
- // The operating system doesn't clean up
- // the file that announcing created, so
- // we have to clean it up ourselves.
- // There's a race here--we can't know for
- // sure whether someone else has come along
- // and replaced our socket name already--
- // but this sequence (remove then close)
- // is at least compatible with the auto-remove
- // sequence in ListenUnix. It's only non-Go
- // programs that can mess us up.
- if l.path[0] != '@' {
- syscall.Unlink(l.path)
- }
- return l.fd.Close()
-}
-
-// Addr returns the listener's network address.
-func (l *UnixListener) Addr() Addr { return l.fd.laddr }
-
-// SetDeadline sets the deadline associated with the listener.
-// A zero time value disables the deadline.
-func (l *UnixListener) SetDeadline(t time.Time) (err error) {
- if l == nil || l.fd == nil {
- return syscall.EINVAL
- }
- return l.fd.setDeadline(t)
-}
-
-// File returns a copy of the underlying os.File, set to blocking
-// mode. 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) { return l.fd.dup() }
-
-// ListenUnixgram listens for incoming Unix datagram packets addressed
-// to the local address laddr. The network net must be "unixgram".
-// The returned connection's ReadFrom and WriteTo methods can be used
-// to receive and send packets with per-packet addressing.
-func ListenUnixgram(net string, laddr *UnixAddr) (*UnixConn, error) {
- switch net {
- case "unixgram":
- default:
- return nil, &OpError{Op: "listen", Net: net, Addr: laddr, Err: UnknownNetworkError(net)}
- }
- if laddr == nil {
- return nil, &OpError{Op: "listen", Net: net, Addr: nil, Err: errMissingAddress}
- }
- fd, err := unixSocket(net, laddr, nil, "listen", noDeadline)
- if err != nil {
- return nil, &OpError{Op: "listen", Net: net, Addr: laddr, Err: err}
- }
- return newUnixConn(fd), nil
-}