2010-08-20 12:20:12 -06:00
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// Copyright 2009 The Go Authors. All rights reserved.
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2010-03-26 14:23:54 -06:00
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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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2011-12-19 09:57:58 -07:00
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// +build darwin freebsd netbsd openbsd
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build: add build comments to core packages
The go/build package already recognizes
system-specific file names like
mycode_darwin.go
mycode_darwin_386.go
mycode_386.s
However, it is also common to write files that
apply to multiple architectures, so a recent CL added
to go/build the ability to process comments
listing a set of conditions for building. For example:
// +build darwin freebsd openbsd/386
says that this file should be compiled only on
OS X, FreeBSD, or 32-bit x86 OpenBSD systems.
These conventions are not yet documented
(hence this long CL description).
This CL adds build comments to the multi-system
files in the core library, a step toward making it
possible to use go/build to build them.
With this change go/build can handle crypto/rand,
exec, net, path/filepath, os/user, and time.
os and syscall need additional adjustments.
R=golang-dev, r, gri, r, gustavo
CC=golang-dev
https://golang.org/cl/5011046
2011-09-15 14:48:57 -06:00
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2010-03-26 14:23:54 -06:00
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// BSD system call wrappers shared by *BSD based systems
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// including OS X (Darwin) and FreeBSD. Like the other
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// syscall_*.go files it is compiled as Go code but also
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// used as input to mksyscall which parses the //sys
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// lines and generates system call stubs.
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package syscall
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2012-01-13 14:40:55 -07:00
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import (
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"runtime"
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"unsafe"
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)
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2010-03-26 14:23:54 -06:00
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/*
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* Pseudo-system calls
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*/
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// The const provides a compile-time constant so clients
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// can adjust to whether there is a working Getwd and avoid
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// even linking this function into the binary. See ../os/getwd.go.
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const ImplementsGetwd = false
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2011-11-13 20:44:52 -07:00
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func Getwd() (string, error) { return "", ENOTSUP }
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2010-03-26 14:23:54 -06:00
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/*
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* Wrapped
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*/
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2011-11-13 20:44:52 -07:00
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//sysnb getgroups(ngid int, gid *_Gid_t) (n int, err error)
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//sysnb setgroups(ngid int, gid *_Gid_t) (err error)
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2010-03-26 14:23:54 -06:00
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2011-11-13 20:44:52 -07:00
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func Getgroups() (gids []int, err error) {
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2010-03-26 14:23:54 -06:00
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n, err := getgroups(0, nil)
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2011-11-13 20:44:52 -07:00
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if err != nil {
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return nil, err
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2010-03-26 14:23:54 -06:00
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}
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if n == 0 {
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2011-11-13 20:44:52 -07:00
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return nil, nil
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2010-03-26 14:23:54 -06:00
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}
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// Sanity check group count. Max is 16 on BSD.
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if n < 0 || n > 1000 {
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return nil, EINVAL
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}
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a := make([]_Gid_t, n)
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n, err = getgroups(n, &a[0])
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2011-11-13 20:44:52 -07:00
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if err != nil {
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return nil, err
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2010-03-26 14:23:54 -06:00
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}
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gids = make([]int, n)
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for i, v := range a[0:n] {
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gids[i] = int(v)
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}
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return
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}
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2011-11-13 20:44:52 -07:00
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func Setgroups(gids []int) (err error) {
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2010-03-26 14:23:54 -06:00
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if len(gids) == 0 {
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return setgroups(0, nil)
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}
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a := make([]_Gid_t, len(gids))
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for i, v := range gids {
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a[i] = _Gid_t(v)
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}
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return setgroups(len(a), &a[0])
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}
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2011-11-13 20:44:52 -07:00
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func ReadDirent(fd int, buf []byte) (n int, err error) {
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2011-04-06 13:44:40 -06:00
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// Final argument is (basep *uintptr) and the syscall doesn't take nil.
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// TODO(rsc): Can we use a single global basep for all calls?
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return Getdirentries(fd, buf, new(uintptr))
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}
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2010-03-26 14:23:54 -06:00
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// Wait status is 7 bits at bottom, either 0 (exited),
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// 0x7F (stopped), or a signal number that caused an exit.
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// The 0x80 bit is whether there was a core dump.
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// An extra number (exit code, signal causing a stop)
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// is in the high bits.
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type WaitStatus uint32
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const (
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mask = 0x7F
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core = 0x80
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shift = 8
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exited = 0
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stopped = 0x7F
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)
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func (w WaitStatus) Exited() bool { return w&mask == exited }
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func (w WaitStatus) ExitStatus() int {
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if w&mask != exited {
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return -1
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}
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return int(w >> shift)
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}
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func (w WaitStatus) Signaled() bool { return w&mask != stopped && w&mask != 0 }
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func (w WaitStatus) Signal() int {
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sig := int(w & mask)
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if sig == stopped || sig == 0 {
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return -1
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}
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return sig
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}
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func (w WaitStatus) CoreDump() bool { return w.Signaled() && w&core != 0 }
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func (w WaitStatus) Stopped() bool { return w&mask == stopped && w>>shift != SIGSTOP }
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func (w WaitStatus) Continued() bool { return w&mask == stopped && w>>shift == SIGSTOP }
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func (w WaitStatus) StopSignal() int {
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if !w.Stopped() {
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return -1
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}
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return int(w>>shift) & 0xFF
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}
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func (w WaitStatus) TrapCause() int { return -1 }
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2011-11-13 20:44:52 -07:00
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//sys wait4(pid int, wstatus *_C_int, options int, rusage *Rusage) (wpid int, err error)
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2010-03-26 14:23:54 -06:00
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2011-11-13 20:44:52 -07:00
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func Wait4(pid int, wstatus *WaitStatus, options int, rusage *Rusage) (wpid int, err error) {
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var status _C_int
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2011-11-13 20:44:52 -07:00
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wpid, err = wait4(pid, &status, options, rusage)
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2010-03-26 14:23:54 -06:00
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if wstatus != nil {
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*wstatus = WaitStatus(status)
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}
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return
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}
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2011-11-13 20:44:52 -07:00
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//sys accept(s int, rsa *RawSockaddrAny, addrlen *_Socklen) (fd int, err error)
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//sys bind(s int, addr uintptr, addrlen _Socklen) (err error)
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//sys connect(s int, addr uintptr, addrlen _Socklen) (err error)
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//sysnb socket(domain int, typ int, proto int) (fd int, err error)
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//sys getsockopt(s int, level int, name int, val uintptr, vallen *_Socklen) (err error)
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//sys setsockopt(s int, level int, name int, val uintptr, vallen uintptr) (err error)
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//sysnb getpeername(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error)
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//sysnb getsockname(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error)
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//sys Shutdown(s int, how int) (err error)
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2010-03-26 14:23:54 -06:00
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// For testing: clients can set this flag to force
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// creation of IPv6 sockets to return EAFNOSUPPORT.
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var SocketDisableIPv6 bool
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type Sockaddr interface {
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2011-11-13 20:44:52 -07:00
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sockaddr() (ptr uintptr, len _Socklen, err error) // lowercase; only we can define Sockaddrs
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2010-03-26 14:23:54 -06:00
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}
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type SockaddrInet4 struct {
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Port int
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Addr [4]byte
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raw RawSockaddrInet4
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}
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2011-11-13 20:44:52 -07:00
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func (sa *SockaddrInet4) sockaddr() (uintptr, _Socklen, error) {
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2010-03-26 14:23:54 -06:00
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if sa.Port < 0 || sa.Port > 0xFFFF {
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return 0, 0, EINVAL
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}
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sa.raw.Len = SizeofSockaddrInet4
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sa.raw.Family = AF_INET
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p := (*[2]byte)(unsafe.Pointer(&sa.raw.Port))
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p[0] = byte(sa.Port >> 8)
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p[1] = byte(sa.Port)
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for i := 0; i < len(sa.Addr); i++ {
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sa.raw.Addr[i] = sa.Addr[i]
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}
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2011-11-13 20:44:52 -07:00
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return uintptr(unsafe.Pointer(&sa.raw)), _Socklen(sa.raw.Len), nil
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2010-03-26 14:23:54 -06:00
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}
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type SockaddrInet6 struct {
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2011-05-22 11:09:07 -06:00
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Port int
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ZoneId uint32
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Addr [16]byte
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raw RawSockaddrInet6
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}
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2011-11-13 20:44:52 -07:00
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func (sa *SockaddrInet6) sockaddr() (uintptr, _Socklen, error) {
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2010-03-26 14:23:54 -06:00
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if sa.Port < 0 || sa.Port > 0xFFFF {
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return 0, 0, EINVAL
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}
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sa.raw.Len = SizeofSockaddrInet6
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sa.raw.Family = AF_INET6
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p := (*[2]byte)(unsafe.Pointer(&sa.raw.Port))
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p[0] = byte(sa.Port >> 8)
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p[1] = byte(sa.Port)
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2011-05-22 11:09:07 -06:00
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sa.raw.Scope_id = sa.ZoneId
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2010-03-26 14:23:54 -06:00
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for i := 0; i < len(sa.Addr); i++ {
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sa.raw.Addr[i] = sa.Addr[i]
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}
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2011-11-13 20:44:52 -07:00
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return uintptr(unsafe.Pointer(&sa.raw)), _Socklen(sa.raw.Len), nil
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2010-03-26 14:23:54 -06:00
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}
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type SockaddrUnix struct {
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Name string
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raw RawSockaddrUnix
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}
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2011-11-13 20:44:52 -07:00
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func (sa *SockaddrUnix) sockaddr() (uintptr, _Socklen, error) {
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2010-03-26 14:23:54 -06:00
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name := sa.Name
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n := len(name)
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if n >= len(sa.raw.Path) || n == 0 {
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return 0, 0, EINVAL
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}
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sa.raw.Len = byte(3 + n) // 2 for Family, Len; 1 for NUL
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sa.raw.Family = AF_UNIX
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for i := 0; i < n; i++ {
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sa.raw.Path[i] = int8(name[i])
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}
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2011-11-13 20:44:52 -07:00
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return uintptr(unsafe.Pointer(&sa.raw)), _Socklen(sa.raw.Len), nil
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2010-03-26 14:23:54 -06:00
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}
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2011-11-13 20:44:52 -07:00
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func (sa *SockaddrDatalink) sockaddr() (uintptr, _Socklen, error) {
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2011-02-11 12:34:00 -07:00
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if sa.Index == 0 {
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return 0, 0, EINVAL
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}
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sa.raw.Len = sa.Len
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sa.raw.Family = AF_LINK
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sa.raw.Index = sa.Index
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sa.raw.Type = sa.Type
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sa.raw.Nlen = sa.Nlen
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sa.raw.Alen = sa.Alen
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sa.raw.Slen = sa.Slen
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for i := 0; i < len(sa.raw.Data); i++ {
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sa.raw.Data[i] = sa.Data[i]
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}
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2011-11-13 20:44:52 -07:00
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return uintptr(unsafe.Pointer(&sa.raw)), SizeofSockaddrDatalink, nil
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2011-02-11 12:34:00 -07:00
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}
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2011-11-13 20:44:52 -07:00
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func anyToSockaddr(rsa *RawSockaddrAny) (Sockaddr, error) {
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2010-03-26 14:23:54 -06:00
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switch rsa.Addr.Family {
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2011-02-11 12:34:00 -07:00
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case AF_LINK:
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pp := (*RawSockaddrDatalink)(unsafe.Pointer(rsa))
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sa := new(SockaddrDatalink)
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sa.Len = pp.Len
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sa.Family = pp.Family
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sa.Index = pp.Index
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sa.Type = pp.Type
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sa.Nlen = pp.Nlen
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sa.Alen = pp.Alen
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sa.Slen = pp.Slen
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for i := 0; i < len(sa.Data); i++ {
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sa.Data[i] = pp.Data[i]
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}
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2011-11-13 20:44:52 -07:00
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return sa, nil
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2011-02-11 12:34:00 -07:00
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2010-03-26 14:23:54 -06:00
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case AF_UNIX:
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pp := (*RawSockaddrUnix)(unsafe.Pointer(rsa))
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if pp.Len < 3 || pp.Len > SizeofSockaddrUnix {
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return nil, EINVAL
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}
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sa := new(SockaddrUnix)
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n := int(pp.Len) - 3 // subtract leading Family, Len, terminating NUL
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for i := 0; i < n; i++ {
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if pp.Path[i] == 0 {
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// found early NUL; assume Len is overestimating
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n = i
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break
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}
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}
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2010-07-01 18:49:28 -06:00
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bytes := (*[10000]byte)(unsafe.Pointer(&pp.Path[0]))[0:n]
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sa.Name = string(bytes)
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return sa, nil
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2010-03-26 14:23:54 -06:00
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case AF_INET:
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pp := (*RawSockaddrInet4)(unsafe.Pointer(rsa))
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sa := new(SockaddrInet4)
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p := (*[2]byte)(unsafe.Pointer(&pp.Port))
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sa.Port = int(p[0])<<8 + int(p[1])
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for i := 0; i < len(sa.Addr); i++ {
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sa.Addr[i] = pp.Addr[i]
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}
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2011-11-13 20:44:52 -07:00
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return sa, nil
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case AF_INET6:
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pp := (*RawSockaddrInet6)(unsafe.Pointer(rsa))
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sa := new(SockaddrInet6)
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p := (*[2]byte)(unsafe.Pointer(&pp.Port))
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sa.Port = int(p[0])<<8 + int(p[1])
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2011-05-22 11:09:07 -06:00
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sa.ZoneId = pp.Scope_id
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2010-03-26 14:23:54 -06:00
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for i := 0; i < len(sa.Addr); i++ {
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sa.Addr[i] = pp.Addr[i]
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}
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2011-11-13 20:44:52 -07:00
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return sa, nil
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}
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return nil, EAFNOSUPPORT
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}
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2011-11-13 20:44:52 -07:00
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func Accept(fd int) (nfd int, sa Sockaddr, err error) {
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2010-03-26 14:23:54 -06:00
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var rsa RawSockaddrAny
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var len _Socklen = SizeofSockaddrAny
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2011-11-13 20:44:52 -07:00
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nfd, err = accept(fd, &rsa, &len)
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if err != nil {
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2010-03-26 14:23:54 -06:00
|
|
|
return
|
|
|
|
}
|
2011-11-13 20:44:52 -07:00
|
|
|
sa, err = anyToSockaddr(&rsa)
|
|
|
|
if err != nil {
|
2010-03-26 14:23:54 -06:00
|
|
|
Close(nfd)
|
|
|
|
nfd = 0
|
|
|
|
}
|
|
|
|
return
|
|
|
|
}
|
|
|
|
|
2011-11-13 20:44:52 -07:00
|
|
|
func Getsockname(fd int) (sa Sockaddr, err error) {
|
2010-03-26 14:23:54 -06:00
|
|
|
var rsa RawSockaddrAny
|
|
|
|
var len _Socklen = SizeofSockaddrAny
|
2011-11-13 20:44:52 -07:00
|
|
|
if err = getsockname(fd, &rsa, &len); err != nil {
|
2010-03-26 14:23:54 -06:00
|
|
|
return
|
|
|
|
}
|
|
|
|
return anyToSockaddr(&rsa)
|
|
|
|
}
|
|
|
|
|
2011-11-13 20:44:52 -07:00
|
|
|
func Getpeername(fd int) (sa Sockaddr, err error) {
|
2010-03-26 14:23:54 -06:00
|
|
|
var rsa RawSockaddrAny
|
|
|
|
var len _Socklen = SizeofSockaddrAny
|
2011-11-13 20:44:52 -07:00
|
|
|
if err = getpeername(fd, &rsa, &len); err != nil {
|
2010-03-26 14:23:54 -06:00
|
|
|
return
|
|
|
|
}
|
|
|
|
return anyToSockaddr(&rsa)
|
|
|
|
}
|
|
|
|
|
2011-11-13 20:44:52 -07:00
|
|
|
func Bind(fd int, sa Sockaddr) (err error) {
|
2010-03-26 14:23:54 -06:00
|
|
|
ptr, n, err := sa.sockaddr()
|
2011-11-13 20:44:52 -07:00
|
|
|
if err != nil {
|
2010-03-26 14:23:54 -06:00
|
|
|
return err
|
|
|
|
}
|
|
|
|
return bind(fd, ptr, n)
|
|
|
|
}
|
|
|
|
|
2011-11-13 20:44:52 -07:00
|
|
|
func Connect(fd int, sa Sockaddr) (err error) {
|
2010-03-26 14:23:54 -06:00
|
|
|
ptr, n, err := sa.sockaddr()
|
2011-11-13 20:44:52 -07:00
|
|
|
if err != nil {
|
2010-03-26 14:23:54 -06:00
|
|
|
return err
|
|
|
|
}
|
|
|
|
return connect(fd, ptr, n)
|
|
|
|
}
|
|
|
|
|
2011-11-13 20:44:52 -07:00
|
|
|
func Socket(domain, typ, proto int) (fd int, err error) {
|
2010-03-26 14:23:54 -06:00
|
|
|
if domain == AF_INET6 && SocketDisableIPv6 {
|
|
|
|
return -1, EAFNOSUPPORT
|
|
|
|
}
|
2011-11-13 20:44:52 -07:00
|
|
|
fd, err = socket(domain, typ, proto)
|
2010-03-26 14:23:54 -06:00
|
|
|
return
|
|
|
|
}
|
|
|
|
|
2011-11-13 20:44:52 -07:00
|
|
|
//sysnb socketpair(domain int, typ int, proto int, fd *[2]int) (err error)
|
2010-09-24 12:59:34 -06:00
|
|
|
|
2011-11-13 20:44:52 -07:00
|
|
|
func Socketpair(domain, typ, proto int) (fd [2]int, err error) {
|
|
|
|
err = socketpair(domain, typ, proto, &fd)
|
2010-06-30 15:58:21 -06:00
|
|
|
return
|
|
|
|
}
|
|
|
|
|
2011-11-13 20:44:52 -07:00
|
|
|
func GetsockoptByte(fd, level, opt int) (value byte, err error) {
|
2011-09-23 08:39:19 -06:00
|
|
|
var n byte
|
|
|
|
vallen := _Socklen(1)
|
2011-11-13 20:44:52 -07:00
|
|
|
err = getsockopt(fd, level, opt, uintptr(unsafe.Pointer(&n)), &vallen)
|
|
|
|
return n, err
|
2011-09-23 08:39:19 -06:00
|
|
|
}
|
|
|
|
|
2011-11-13 20:44:52 -07:00
|
|
|
func GetsockoptInt(fd, level, opt int) (value int, err error) {
|
2011-03-25 12:43:59 -06:00
|
|
|
var n int32
|
|
|
|
vallen := _Socklen(4)
|
2011-11-13 20:44:52 -07:00
|
|
|
err = getsockopt(fd, level, opt, uintptr(unsafe.Pointer(&n)), &vallen)
|
|
|
|
return int(n), err
|
2011-03-25 12:43:59 -06:00
|
|
|
}
|
|
|
|
|
2011-11-13 20:44:52 -07:00
|
|
|
func GetsockoptInet4Addr(fd, level, opt int) (value [4]byte, err error) {
|
2011-10-01 03:45:06 -06:00
|
|
|
vallen := _Socklen(4)
|
2011-11-13 20:44:52 -07:00
|
|
|
err = getsockopt(fd, level, opt, uintptr(unsafe.Pointer(&value[0])), &vallen)
|
|
|
|
return value, err
|
2011-10-01 03:45:06 -06:00
|
|
|
}
|
|
|
|
|
2011-11-13 20:44:52 -07:00
|
|
|
func GetsockoptIPMreq(fd, level, opt int) (*IPMreq, error) {
|
2011-10-01 03:45:06 -06:00
|
|
|
var value IPMreq
|
|
|
|
vallen := _Socklen(SizeofIPMreq)
|
2011-11-13 20:44:52 -07:00
|
|
|
err := getsockopt(fd, level, opt, uintptr(unsafe.Pointer(&value)), &vallen)
|
|
|
|
return &value, err
|
2011-10-01 03:45:06 -06:00
|
|
|
}
|
|
|
|
|
2011-11-13 20:44:52 -07:00
|
|
|
func GetsockoptIPv6Mreq(fd, level, opt int) (*IPv6Mreq, error) {
|
2011-10-01 03:45:06 -06:00
|
|
|
var value IPv6Mreq
|
|
|
|
vallen := _Socklen(SizeofIPv6Mreq)
|
2011-11-13 20:44:52 -07:00
|
|
|
err := getsockopt(fd, level, opt, uintptr(unsafe.Pointer(&value)), &vallen)
|
|
|
|
return &value, err
|
2011-10-01 03:45:06 -06:00
|
|
|
}
|
|
|
|
|
2011-11-13 20:44:52 -07:00
|
|
|
func SetsockoptByte(fd, level, opt int, value byte) (err error) {
|
2011-09-23 08:39:19 -06:00
|
|
|
var n = byte(value)
|
|
|
|
return setsockopt(fd, level, opt, uintptr(unsafe.Pointer(&n)), 1)
|
|
|
|
}
|
|
|
|
|
2011-11-13 20:44:52 -07:00
|
|
|
func SetsockoptInt(fd, level, opt int, value int) (err error) {
|
2010-03-26 14:23:54 -06:00
|
|
|
var n = int32(value)
|
|
|
|
return setsockopt(fd, level, opt, uintptr(unsafe.Pointer(&n)), 4)
|
|
|
|
}
|
|
|
|
|
2011-11-13 20:44:52 -07:00
|
|
|
func SetsockoptInet4Addr(fd, level, opt int, value [4]byte) (err error) {
|
2011-10-01 03:45:06 -06:00
|
|
|
return setsockopt(fd, level, opt, uintptr(unsafe.Pointer(&value[0])), 4)
|
|
|
|
}
|
|
|
|
|
2011-11-13 20:44:52 -07:00
|
|
|
func SetsockoptTimeval(fd, level, opt int, tv *Timeval) (err error) {
|
2010-03-26 14:23:54 -06:00
|
|
|
return setsockopt(fd, level, opt, uintptr(unsafe.Pointer(tv)), unsafe.Sizeof(*tv))
|
|
|
|
}
|
|
|
|
|
2011-11-13 20:44:52 -07:00
|
|
|
func SetsockoptLinger(fd, level, opt int, l *Linger) (err error) {
|
2010-03-26 14:23:54 -06:00
|
|
|
return setsockopt(fd, level, opt, uintptr(unsafe.Pointer(l)), unsafe.Sizeof(*l))
|
|
|
|
}
|
|
|
|
|
2011-11-13 20:44:52 -07:00
|
|
|
func SetsockoptIPMreq(fd, level, opt int, mreq *IPMreq) (err error) {
|
2011-06-02 08:10:17 -06:00
|
|
|
return setsockopt(fd, level, opt, uintptr(unsafe.Pointer(mreq)), unsafe.Sizeof(*mreq))
|
|
|
|
}
|
|
|
|
|
2011-11-13 20:44:52 -07:00
|
|
|
func SetsockoptIPv6Mreq(fd, level, opt int, mreq *IPv6Mreq) (err error) {
|
2011-02-03 12:15:35 -07:00
|
|
|
return setsockopt(fd, level, opt, uintptr(unsafe.Pointer(mreq)), unsafe.Sizeof(*mreq))
|
|
|
|
}
|
|
|
|
|
2011-11-13 20:44:52 -07:00
|
|
|
func SetsockoptString(fd, level, opt int, s string) (err error) {
|
2011-06-17 15:07:21 -06:00
|
|
|
return setsockopt(fd, level, opt, uintptr(unsafe.Pointer(&[]byte(s)[0])), uintptr(len(s)))
|
2010-03-26 14:23:54 -06:00
|
|
|
}
|
|
|
|
|
2011-11-13 20:44:52 -07:00
|
|
|
//sys recvfrom(fd int, p []byte, flags int, from *RawSockaddrAny, fromlen *_Socklen) (n int, err error)
|
2010-03-26 14:23:54 -06:00
|
|
|
|
2011-11-13 20:44:52 -07:00
|
|
|
func Recvfrom(fd int, p []byte, flags int) (n int, from Sockaddr, err error) {
|
2010-03-26 14:23:54 -06:00
|
|
|
var rsa RawSockaddrAny
|
|
|
|
var len _Socklen = SizeofSockaddrAny
|
2011-11-13 20:44:52 -07:00
|
|
|
if n, err = recvfrom(fd, p, flags, &rsa, &len); err != nil {
|
2010-03-26 14:23:54 -06:00
|
|
|
return
|
|
|
|
}
|
2011-11-13 20:44:52 -07:00
|
|
|
from, err = anyToSockaddr(&rsa)
|
2010-03-26 14:23:54 -06:00
|
|
|
return
|
|
|
|
}
|
|
|
|
|
2011-11-13 20:44:52 -07:00
|
|
|
//sys sendto(s int, buf []byte, flags int, to uintptr, addrlen _Socklen) (err error)
|
2010-03-26 14:23:54 -06:00
|
|
|
|
2011-11-13 20:44:52 -07:00
|
|
|
func Sendto(fd int, p []byte, flags int, to Sockaddr) (err error) {
|
2010-03-26 14:23:54 -06:00
|
|
|
ptr, n, err := to.sockaddr()
|
2011-11-13 20:44:52 -07:00
|
|
|
if err != nil {
|
2010-03-26 14:23:54 -06:00
|
|
|
return err
|
|
|
|
}
|
|
|
|
return sendto(fd, p, flags, ptr, n)
|
|
|
|
}
|
|
|
|
|
2011-11-13 20:44:52 -07:00
|
|
|
//sys recvmsg(s int, msg *Msghdr, flags int) (n int, err error)
|
2011-06-20 16:40:20 -06:00
|
|
|
|
2011-11-13 20:44:52 -07:00
|
|
|
func Recvmsg(fd int, p, oob []byte, flags int) (n, oobn int, recvflags int, from Sockaddr, err error) {
|
2011-06-20 16:40:20 -06:00
|
|
|
var msg Msghdr
|
|
|
|
var rsa RawSockaddrAny
|
|
|
|
msg.Name = (*byte)(unsafe.Pointer(&rsa))
|
|
|
|
msg.Namelen = uint32(SizeofSockaddrAny)
|
|
|
|
var iov Iovec
|
|
|
|
if len(p) > 0 {
|
|
|
|
iov.Base = (*byte)(unsafe.Pointer(&p[0]))
|
|
|
|
iov.SetLen(len(p))
|
|
|
|
}
|
|
|
|
var dummy byte
|
|
|
|
if len(oob) > 0 {
|
|
|
|
// receive at least one normal byte
|
|
|
|
if len(p) == 0 {
|
|
|
|
iov.Base = &dummy
|
|
|
|
iov.SetLen(1)
|
|
|
|
}
|
|
|
|
msg.Control = (*byte)(unsafe.Pointer(&oob[0]))
|
|
|
|
msg.SetControllen(len(oob))
|
|
|
|
}
|
|
|
|
msg.Iov = &iov
|
|
|
|
msg.Iovlen = 1
|
2011-11-13 20:44:52 -07:00
|
|
|
if n, err = recvmsg(fd, &msg, flags); err != nil {
|
2011-06-20 16:40:20 -06:00
|
|
|
return
|
|
|
|
}
|
|
|
|
oobn = int(msg.Controllen)
|
|
|
|
recvflags = int(msg.Flags)
|
|
|
|
// source address is only specified if the socket is unconnected
|
|
|
|
if rsa.Addr.Family != AF_UNSPEC {
|
2011-11-13 20:44:52 -07:00
|
|
|
from, err = anyToSockaddr(&rsa)
|
2011-06-20 16:40:20 -06:00
|
|
|
}
|
|
|
|
return
|
|
|
|
}
|
|
|
|
|
2011-11-13 20:44:52 -07:00
|
|
|
//sys sendmsg(s int, msg *Msghdr, flags int) (err error)
|
2011-06-20 16:40:20 -06:00
|
|
|
|
2011-11-13 20:44:52 -07:00
|
|
|
func Sendmsg(fd int, p, oob []byte, to Sockaddr, flags int) (err error) {
|
2011-06-20 16:40:20 -06:00
|
|
|
var ptr uintptr
|
|
|
|
var salen _Socklen
|
|
|
|
if to != nil {
|
2011-11-13 20:44:52 -07:00
|
|
|
var err error
|
2011-06-20 16:40:20 -06:00
|
|
|
ptr, salen, err = to.sockaddr()
|
2011-11-13 20:44:52 -07:00
|
|
|
if err != nil {
|
2011-06-20 16:40:20 -06:00
|
|
|
return err
|
|
|
|
}
|
|
|
|
}
|
|
|
|
var msg Msghdr
|
|
|
|
msg.Name = (*byte)(unsafe.Pointer(ptr))
|
|
|
|
msg.Namelen = uint32(salen)
|
|
|
|
var iov Iovec
|
|
|
|
if len(p) > 0 {
|
|
|
|
iov.Base = (*byte)(unsafe.Pointer(&p[0]))
|
|
|
|
iov.SetLen(len(p))
|
|
|
|
}
|
|
|
|
var dummy byte
|
|
|
|
if len(oob) > 0 {
|
|
|
|
// send at least one normal byte
|
|
|
|
if len(p) == 0 {
|
|
|
|
iov.Base = &dummy
|
|
|
|
iov.SetLen(1)
|
|
|
|
}
|
|
|
|
msg.Control = (*byte)(unsafe.Pointer(&oob[0]))
|
|
|
|
msg.SetControllen(len(oob))
|
|
|
|
}
|
|
|
|
msg.Iov = &iov
|
|
|
|
msg.Iovlen = 1
|
2011-11-13 20:44:52 -07:00
|
|
|
if err = sendmsg(fd, &msg, flags); err != nil {
|
2011-06-20 16:40:20 -06:00
|
|
|
return
|
|
|
|
}
|
|
|
|
return
|
|
|
|
}
|
|
|
|
|
2011-11-13 20:44:52 -07:00
|
|
|
//sys kevent(kq int, change uintptr, nchange int, event uintptr, nevent int, timeout *Timespec) (n int, err error)
|
2010-03-26 14:23:54 -06:00
|
|
|
|
2011-11-13 20:44:52 -07:00
|
|
|
func Kevent(kq int, changes, events []Kevent_t, timeout *Timespec) (n int, err error) {
|
2010-03-26 14:23:54 -06:00
|
|
|
var change, event uintptr
|
|
|
|
if len(changes) > 0 {
|
|
|
|
change = uintptr(unsafe.Pointer(&changes[0]))
|
|
|
|
}
|
|
|
|
if len(events) > 0 {
|
|
|
|
event = uintptr(unsafe.Pointer(&events[0]))
|
|
|
|
}
|
|
|
|
return kevent(kq, change, len(changes), event, len(events), timeout)
|
|
|
|
}
|
|
|
|
|
2011-11-13 20:44:52 -07:00
|
|
|
//sys sysctl(mib []_C_int, old *byte, oldlen *uintptr, new *byte, newlen uintptr) (err error) = SYS___SYSCTL
|
2010-03-26 14:23:54 -06:00
|
|
|
|
2011-11-13 20:44:52 -07:00
|
|
|
func Sysctl(name string) (value string, err error) {
|
2010-03-26 14:23:54 -06:00
|
|
|
// Translate name to mib number.
|
2011-11-13 20:44:52 -07:00
|
|
|
mib, err := nametomib(name)
|
|
|
|
if err != nil {
|
|
|
|
return "", err
|
2010-03-26 14:23:54 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
// Find size.
|
|
|
|
n := uintptr(0)
|
2011-11-13 20:44:52 -07:00
|
|
|
if err = sysctl(mib, nil, &n, nil, 0); err != nil {
|
|
|
|
return "", err
|
2010-03-26 14:23:54 -06:00
|
|
|
}
|
|
|
|
if n == 0 {
|
2011-11-17 07:52:39 -07:00
|
|
|
// TODO(jsing): Remove after OpenBSD 5.2 release.
|
|
|
|
// Work around a bug that was fixed after OpenBSD 5.0.
|
|
|
|
// The length for kern.hostname and kern.domainname is always
|
|
|
|
// returned as 0 when a nil value is passed for oldp.
|
2012-01-13 14:40:55 -07:00
|
|
|
if runtime.GOOS == "openbsd" && (name == "kern.hostname" || name == "kern.domainname") {
|
2011-11-17 07:52:39 -07:00
|
|
|
// MAXHOSTNAMELEN
|
|
|
|
n = 256
|
|
|
|
} else {
|
|
|
|
return "", nil
|
|
|
|
}
|
2010-03-26 14:23:54 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
// Read into buffer of that size.
|
|
|
|
buf := make([]byte, n)
|
2011-11-13 20:44:52 -07:00
|
|
|
if err = sysctl(mib, &buf[0], &n, nil, 0); err != nil {
|
|
|
|
return "", err
|
2010-03-26 14:23:54 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
// Throw away terminating NUL.
|
|
|
|
if n > 0 && buf[n-1] == '\x00' {
|
|
|
|
n--
|
|
|
|
}
|
2011-11-13 20:44:52 -07:00
|
|
|
return string(buf[0:n]), nil
|
2010-03-26 14:23:54 -06:00
|
|
|
}
|
|
|
|
|
2011-11-13 20:44:52 -07:00
|
|
|
func SysctlUint32(name string) (value uint32, err error) {
|
2010-03-26 14:23:54 -06:00
|
|
|
// Translate name to mib number.
|
2011-11-13 20:44:52 -07:00
|
|
|
mib, err := nametomib(name)
|
|
|
|
if err != nil {
|
|
|
|
return 0, err
|
2010-03-26 14:23:54 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
// Read into buffer of that size.
|
|
|
|
n := uintptr(4)
|
|
|
|
buf := make([]byte, 4)
|
2011-11-13 20:44:52 -07:00
|
|
|
if err = sysctl(mib, &buf[0], &n, nil, 0); err != nil {
|
|
|
|
return 0, err
|
2010-03-26 14:23:54 -06:00
|
|
|
}
|
|
|
|
if n != 4 {
|
|
|
|
return 0, EIO
|
|
|
|
}
|
2011-11-13 20:44:52 -07:00
|
|
|
return *(*uint32)(unsafe.Pointer(&buf[0])), nil
|
2010-03-26 14:23:54 -06:00
|
|
|
}
|
|
|
|
|
2011-11-13 20:44:52 -07:00
|
|
|
//sys utimes(path string, timeval *[2]Timeval) (err error)
|
|
|
|
func Utimes(path string, tv []Timeval) (err error) {
|
2010-05-19 18:47:57 -06:00
|
|
|
if len(tv) != 2 {
|
|
|
|
return EINVAL
|
|
|
|
}
|
|
|
|
return utimes(path, (*[2]Timeval)(unsafe.Pointer(&tv[0])))
|
|
|
|
}
|
|
|
|
|
2011-11-13 20:44:52 -07:00
|
|
|
//sys futimes(fd int, timeval *[2]Timeval) (err error)
|
|
|
|
func Futimes(fd int, tv []Timeval) (err error) {
|
2010-05-19 18:47:57 -06:00
|
|
|
if len(tv) != 2 {
|
|
|
|
return EINVAL
|
|
|
|
}
|
|
|
|
return futimes(fd, (*[2]Timeval)(unsafe.Pointer(&tv[0])))
|
|
|
|
}
|
|
|
|
|
2011-11-13 20:44:52 -07:00
|
|
|
//sys fcntl(fd int, cmd int, arg int) (val int, err error)
|
2010-05-19 18:47:57 -06:00
|
|
|
|
2010-03-26 14:23:54 -06:00
|
|
|
// TODO: wrap
|
2011-11-13 20:44:52 -07:00
|
|
|
// Acct(name nil-string) (err error)
|
|
|
|
// Gethostuuid(uuid *byte, timeout *Timespec) (err error)
|
|
|
|
// Madvise(addr *byte, len int, behav int) (err error)
|
|
|
|
// Mprotect(addr *byte, len int, prot int) (err error)
|
|
|
|
// Msync(addr *byte, len int, flags int) (err error)
|
|
|
|
// Ptrace(req int, pid int, addr uintptr, data int) (ret uintptr, err error)
|
2011-04-06 15:52:02 -06:00
|
|
|
|
|
|
|
var mapper = &mmapper{
|
|
|
|
active: make(map[*byte][]byte),
|
|
|
|
mmap: mmap,
|
|
|
|
munmap: munmap,
|
|
|
|
}
|
|
|
|
|
2011-11-13 20:44:52 -07:00
|
|
|
func Mmap(fd int, offset int64, length int, prot int, flags int) (data []byte, err error) {
|
2011-04-06 15:52:02 -06:00
|
|
|
return mapper.Mmap(fd, offset, length, prot, flags)
|
|
|
|
}
|
|
|
|
|
2011-11-13 20:44:52 -07:00
|
|
|
func Munmap(b []byte) (err error) {
|
2011-04-06 15:52:02 -06:00
|
|
|
return mapper.Munmap(b)
|
|
|
|
}
|