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// 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.
// Low-level socket interface.
// Only for implementing net package.
// DO NOT USE DIRECTLY.
package syscall
import (
"syscall";
"unsafe";
)
// For testing: clients can set this flag to force
// creation of IPv6 sockets to return EAFNOSUPPORT.
var SocketDisableIPv6 bool
func saLen(s *Sockaddr) int64 {
switch s.Family {
case AF_UNIX:
return SizeofSockaddrUnix;
case AF_INET:
return SizeofSockaddrInet4;
case AF_INET6:
return SizeofSockaddrInet6
}
return 0
}
func Socket(domain, proto, typ int64) (ret int64, err int64) {
if domain == AF_INET6 && SocketDisableIPv6 {
return -1, EAFNOSUPPORT
}
r1, r2, e := Syscall(SYS_SOCKET, domain, proto, typ);
return r1, e
}
func Connect(fd int64, sa *Sockaddr) (ret int64, err int64) {
r1, r2, e := Syscall(SYS_CONNECT, fd, int64(uintptr(unsafe.Pointer(sa))), saLen(sa));
return r1, e
}
func Bind(fd int64, sa *Sockaddr) (ret int64, err int64) {
r1, r2, e := Syscall(SYS_BIND, fd, int64(uintptr(unsafe.Pointer(sa))), saLen(sa));
return r1, e
}
func Listen(fd, n int64) (ret int64, err int64) {
r1, r2, e := Syscall(SYS_LISTEN, fd, n, 0);
return r1, e
}
func Accept(fd int64, sa *Sockaddr) (ret int64, err int64) {
var n int32 = SizeofSockaddr;
r1, r2, e := Syscall(SYS_ACCEPT, fd, int64(uintptr(unsafe.Pointer(sa))), int64(uintptr(unsafe.Pointer(&n))));
return r1, e
}
func Setsockopt(fd, level, opt, valueptr, length int64) (ret int64, err int64) {
if fd < 0 {
return -1, EINVAL
}
r1, r2, e := Syscall6(SYS_SETSOCKOPT, fd, level, opt, valueptr, length, 0);
return r1, e
}
func Setsockopt_int(fd, level, opt int64, value int) int64 {
n := int32(opt);
r1, e := Setsockopt(fd, level, opt, int64(uintptr(unsafe.Pointer(&n))), 4);
return e
}
func Setsockopt_tv(fd, level, opt, nsec int64) int64 {
var tv Timeval;
nsec += 999;
tv.Sec = int64(nsec/1000000000);
tv.Usec = uint64(nsec%1000000000);
r1, e := Setsockopt(fd, level, opt, int64(uintptr(unsafe.Pointer(&tv))), 4);
return e
}
func Setsockopt_linger(fd, level, opt int64, sec int) int64 {
var l Linger;
if sec >= 0 {
l.Yes = 1;
l.Sec = int32(sec)
} else {
l.Yes = 0;
l.Sec = 0
}
r1, err := Setsockopt(fd, level, opt, int64(uintptr(unsafe.Pointer(&l))), 8);
return err
}
/*
func getsockopt(fd, level, opt, valueptr, lenptr int64) (ret int64, errno int64) {
r1, r2, err := Syscall6(GETSOCKOPT, fd, level, opt, valueptr, lenptr, 0);
return r1, err;
}
*/
func Epoll_create(size int64) (ret int64, errno int64) {
r1, r2, err := syscall.Syscall(SYS_EPOLL_CREATE, size, 0, 0);
return r1, err
}
func Epoll_ctl(epfd, op, fd int64, ev *EpollEvent) int64 {
r1, r2, err := syscall.Syscall6(SYS_EPOLL_CTL, epfd, op, fd, int64(uintptr(unsafe.Pointer(ev))), 0, 0);
return err
}
func Epoll_wait(epfd int64, ev []EpollEvent, msec int64) (ret int64, err int64) {
var evptr, nev int64;
if ev != nil && len(ev) > 0 {
nev = int64(len(ev));
evptr = int64(uintptr(unsafe.Pointer(&ev[0])))
}
r1, r2, err1 := syscall.Syscall6(SYS_EPOLL_WAIT, epfd, evptr, nev, msec, 0, 0);
return r1, err1
}
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