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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.
package syscall
import (
"syscall";
"unsafe";
)
func Getpagesize() int {
return 4096
}
func TimespecToNsec(ts Timespec) int64 {
return int64(ts.Sec)*1e9 + int64(ts.Nsec);
}
func NsecToTimespec(nsec int64) (ts Timespec) {
ts.Sec = int32(nsec / 1e9);
ts.Nsec = int32(nsec % 1e9);
return;
}
func TimevalToNsec(tv Timeval) int64 {
return int64(tv.Sec)*1e9 + int64(tv.Usec)*1e3;
}
func NsecToTimeval(nsec int64) (tv Timeval) {
nsec += 999; // round up to microsecond
tv.Sec = int32(nsec/1e9);
tv.Usec = int32(nsec%1e9 / 1e3);
return;
}
// On x86 Linux, all the socket calls go through an extra indirection,
// I think because the 5-register system call interface can't handle
// the 6-argument calls like sendto and recvfrom. Instead the
// arguments to the underlying system call are the number below
// and a pointer to an array of uintptr. We hide the pointer in the
// socketcall assembly to avoid allocation on every system call.
const (
// see linux/net.h
_SOCKET = 1;
_BIND = 2;
_CONNECT = 3;
_LISTEN = 4;
_ACCEPT = 5;
_GETSOCKNAME = 6;
_GETPEERNAME = 7;
_SOCKETPAIR = 8;
_SEND = 9;
_RECV = 10;
_SENDTO = 11;
_RECVFROM = 12;
_SHUTDOWN = 13;
_SETSOCKOPT = 14;
_GETSOCKOPT = 15;
_SENDMSG = 16;
_RECVMSG = 17;
)
func socketcall(call int, a0, a1, a2, a3, a4, a5 uintptr) (n int, errno int)
func accept(s int, rsa *RawSockaddrAny, addrlen *_Socklen) (fd int, errno int) {
fd, errno = socketcall(_SOCKET, uintptr(s), uintptr(unsafe.Pointer(rsa)), uintptr(unsafe.Pointer(addrlen)), 0, 0, 0);
return;
}
func bind(s int, addr uintptr, addrlen _Socklen) (errno int) {
var _ int;
_, errno = socketcall(_BIND, uintptr(s), uintptr(addr), uintptr(addrlen), 0, 0, 0);
return;
}
func connect(s int, addr uintptr, addrlen _Socklen) (errno int) {
var _ int;
_, errno = socketcall(_CONNECT, uintptr(s), uintptr(addr), uintptr(addrlen), 0, 0, 0);
return;
}
func socket(domain int, typ int, proto int) (fd int, errno int) {
fd, errno = socketcall(_SOCKET, uintptr(domain), uintptr(typ), uintptr(proto), 0, 0, 0);
return;
}
func setsockopt(s int, level int, name int, val uintptr, vallen int) (errno int) {
var _ int;
_, errno = socketcall(_SETSOCKOPT, uintptr(s), uintptr(level), uintptr(name), uintptr(val), uintptr(vallen), 0);
return;
}
func Listen(s int, n int) (errno int) {
var _ int;
_, errno = socketcall(_LISTEN, uintptr(s), uintptr(n), 0, 0, 0, 0);
return;
}
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