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[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [libgo/] [go/] [net/] [sockopt.go] - Blame information for rev 848

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Line No. Rev Author Line
1 747 jeremybenn 
// Copyright 2009 The Go Authors.  All rights reserved.
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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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// +build darwin freebsd linux netbsd openbsd windows
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// Socket options
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package net
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import (
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        "bytes"
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        "os"
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        "syscall"
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        "time"
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)
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// Boolean to int.
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func boolint(b bool) int {
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        if b {
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                return 1
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        }
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        return 0
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}
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func ipv4AddrToInterface(ip IP) (*Interface, error) {
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        ift, err := Interfaces()
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        if err != nil {
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                return nil, err
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        }
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        for _, ifi := range ift {
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                ifat, err := ifi.Addrs()
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                if err != nil {
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                        return nil, err
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                }
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                for _, ifa := range ifat {
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                        switch v := ifa.(type) {
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                        case *IPAddr:
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                                if ip.Equal(v.IP) {
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                                        return &ifi, nil
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                                }
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                        case *IPNet:
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                                if ip.Equal(v.IP) {
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                                        return &ifi, nil
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                                }
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                        }
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                }
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        }
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        if ip.Equal(IPv4zero) {
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                return nil, nil
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        }
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        return nil, errNoSuchInterface
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}
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func interfaceToIPv4Addr(ifi *Interface) (IP, error) {
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        if ifi == nil {
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                return IPv4zero, nil
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        }
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        ifat, err := ifi.Addrs()
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        if err != nil {
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                return nil, err
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        }
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        for _, ifa := range ifat {
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                switch v := ifa.(type) {
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                case *IPAddr:
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                        if v.IP.To4() != nil {
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                                return v.IP, nil
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                        }
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                case *IPNet:
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                        if v.IP.To4() != nil {
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                                return v.IP, nil
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                        }
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                }
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        }
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        return nil, errNoSuchInterface
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}
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func setIPv4MreqToInterface(mreq *syscall.IPMreq, ifi *Interface) error {
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        if ifi == nil {
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                return nil
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        }
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        ifat, err := ifi.Addrs()
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        if err != nil {
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                return err
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        }
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        for _, ifa := range ifat {
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                switch v := ifa.(type) {
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                case *IPAddr:
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                        if a := v.IP.To4(); a != nil {
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                                copy(mreq.Interface[:], a)
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                                goto done
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                        }
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                case *IPNet:
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                        if a := v.IP.To4(); a != nil {
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                                copy(mreq.Interface[:], a)
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                                goto done
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                        }
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                }
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        }
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done:
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        if bytes.Equal(mreq.Multiaddr[:], IPv4zero.To4()) {
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                return errNoSuchMulticastInterface
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        }
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        return nil
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}
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func setReadBuffer(fd *netFD, bytes int) error {
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        fd.incref()
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        defer fd.decref()
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        return os.NewSyscallError("setsockopt", syscall.SetsockoptInt(fd.sysfd, syscall.SOL_SOCKET, syscall.SO_RCVBUF, bytes))
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}
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func setWriteBuffer(fd *netFD, bytes int) error {
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        fd.incref()
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        defer fd.decref()
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        return os.NewSyscallError("setsockopt", syscall.SetsockoptInt(fd.sysfd, syscall.SOL_SOCKET, syscall.SO_SNDBUF, bytes))
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}
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func setReadDeadline(fd *netFD, t time.Time) error {
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        if t.IsZero() {
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                fd.rdeadline = 0
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        } else {
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                fd.rdeadline = t.UnixNano()
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        }
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        return nil
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}
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func setWriteDeadline(fd *netFD, t time.Time) error {
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        if t.IsZero() {
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                fd.wdeadline = 0
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        } else {
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                fd.wdeadline = t.UnixNano()
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        }
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        return nil
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}
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137 
func setDeadline(fd *netFD, t time.Time) error {
138 
        if err := setReadDeadline(fd, t); err != nil {
139 
                return err
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        }
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        return setWriteDeadline(fd, t)
142 
}
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144 
func setReuseAddr(fd *netFD, reuse bool) error {
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        fd.incref()
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        defer fd.decref()
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        return os.NewSyscallError("setsockopt", syscall.SetsockoptInt(fd.sysfd, syscall.SOL_SOCKET, syscall.SO_REUSEADDR, boolint(reuse)))
148 
}
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150 
func setDontRoute(fd *netFD, dontroute bool) error {
151 
        fd.incref()
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        defer fd.decref()
153 
        return os.NewSyscallError("setsockopt", syscall.SetsockoptInt(fd.sysfd, syscall.SOL_SOCKET, syscall.SO_DONTROUTE, boolint(dontroute)))
154 
}
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156 
func setKeepAlive(fd *netFD, keepalive bool) error {
157 
        fd.incref()
158 
        defer fd.decref()
159 
        return os.NewSyscallError("setsockopt", syscall.SetsockoptInt(fd.sysfd, syscall.SOL_SOCKET, syscall.SO_KEEPALIVE, boolint(keepalive)))
160 
}
161 
 
162 
func setNoDelay(fd *netFD, noDelay bool) error {
163 
        fd.incref()
164 
        defer fd.decref()
165 
        return os.NewSyscallError("setsockopt", syscall.SetsockoptInt(fd.sysfd, syscall.IPPROTO_TCP, syscall.TCP_NODELAY, boolint(noDelay)))
166 
}
167 
 
168 
func setLinger(fd *netFD, sec int) error {
169 
        var l syscall.Linger
170 
        if sec >= 0 {
171 
                l.Onoff = 1
172 
                l.Linger = int32(sec)
173 
        } else {
174 
                l.Onoff = 0
175 
                l.Linger = 0
176 
        }
177 
        fd.incref()
178 
        defer fd.decref()
179 
        return os.NewSyscallError("setsockopt", syscall.SetsockoptLinger(fd.sysfd, syscall.SOL_SOCKET, syscall.SO_LINGER, &l))
180 
}

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