583 lines
16 KiB
Go
583 lines
16 KiB
Go
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// Copyright 2018 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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//go:build aix
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// Aix system calls.
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// This file is compiled as ordinary Go code,
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// but it is also input to mksyscall,
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// which parses the //sys lines and generates system call stubs.
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// Note that sometimes we use a lowercase //sys name and
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// wrap it in our own nicer implementation.
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package unix
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import "unsafe"
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/*
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* Wrapped
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*/
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func Access(path string, mode uint32) (err error) {
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return Faccessat(AT_FDCWD, path, mode, 0)
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}
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func Chmod(path string, mode uint32) (err error) {
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return Fchmodat(AT_FDCWD, path, mode, 0)
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}
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func Chown(path string, uid int, gid int) (err error) {
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return Fchownat(AT_FDCWD, path, uid, gid, 0)
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}
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func Creat(path string, mode uint32) (fd int, err error) {
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return Open(path, O_CREAT|O_WRONLY|O_TRUNC, mode)
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}
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//sys utimes(path string, times *[2]Timeval) (err error)
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func Utimes(path string, tv []Timeval) error {
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if len(tv) != 2 {
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return EINVAL
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}
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return utimes(path, (*[2]Timeval)(unsafe.Pointer(&tv[0])))
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}
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//sys utimensat(dirfd int, path string, times *[2]Timespec, flag int) (err error)
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func UtimesNano(path string, ts []Timespec) error {
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if len(ts) != 2 {
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return EINVAL
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}
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return utimensat(AT_FDCWD, path, (*[2]Timespec)(unsafe.Pointer(&ts[0])), 0)
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}
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func UtimesNanoAt(dirfd int, path string, ts []Timespec, flags int) error {
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if ts == nil {
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return utimensat(dirfd, path, nil, flags)
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}
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if len(ts) != 2 {
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return EINVAL
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}
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return utimensat(dirfd, path, (*[2]Timespec)(unsafe.Pointer(&ts[0])), flags)
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}
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func (sa *SockaddrInet4) sockaddr() (unsafe.Pointer, _Socklen, error) {
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if sa.Port < 0 || sa.Port > 0xFFFF {
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return nil, 0, EINVAL
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}
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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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sa.raw.Addr = sa.Addr
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return unsafe.Pointer(&sa.raw), SizeofSockaddrInet4, nil
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}
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func (sa *SockaddrInet6) sockaddr() (unsafe.Pointer, _Socklen, error) {
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if sa.Port < 0 || sa.Port > 0xFFFF {
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return nil, 0, EINVAL
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}
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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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sa.raw.Scope_id = sa.ZoneId
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sa.raw.Addr = sa.Addr
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return unsafe.Pointer(&sa.raw), SizeofSockaddrInet6, nil
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}
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func (sa *SockaddrUnix) sockaddr() (unsafe.Pointer, _Socklen, error) {
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name := sa.Name
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n := len(name)
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if n > len(sa.raw.Path) {
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return nil, 0, EINVAL
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}
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if n == len(sa.raw.Path) && name[0] != '@' {
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return nil, 0, EINVAL
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}
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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] = uint8(name[i])
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}
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// length is family (uint16), name, NUL.
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sl := _Socklen(2)
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if n > 0 {
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sl += _Socklen(n) + 1
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}
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if sa.raw.Path[0] == '@' || (sa.raw.Path[0] == 0 && sl > 3) {
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// Check sl > 3 so we don't change unnamed socket behavior.
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sa.raw.Path[0] = 0
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// Don't count trailing NUL for abstract address.
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sl--
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}
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return unsafe.Pointer(&sa.raw), sl, nil
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}
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func Getsockname(fd int) (sa Sockaddr, err error) {
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var rsa RawSockaddrAny
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var len _Socklen = SizeofSockaddrAny
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if err = getsockname(fd, &rsa, &len); err != nil {
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return
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}
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return anyToSockaddr(fd, &rsa)
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}
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//sys getcwd(buf []byte) (err error)
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const ImplementsGetwd = true
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func Getwd() (ret string, err error) {
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for len := uint64(4096); ; len *= 2 {
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b := make([]byte, len)
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err := getcwd(b)
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if err == nil {
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i := 0
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for b[i] != 0 {
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i++
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}
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return string(b[0:i]), nil
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}
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if err != ERANGE {
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return "", err
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}
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}
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}
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func Getcwd(buf []byte) (n int, err error) {
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err = getcwd(buf)
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if err == nil {
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i := 0
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for buf[i] != 0 {
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i++
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}
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n = i + 1
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}
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return
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}
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func Getgroups() (gids []int, err error) {
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n, err := getgroups(0, nil)
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if err != nil {
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return nil, err
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}
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if n == 0 {
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return nil, nil
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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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if err != nil {
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return nil, err
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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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func Setgroups(gids []int) (err error) {
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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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/*
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* Socket
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*/
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//sys accept(s int, rsa *RawSockaddrAny, addrlen *_Socklen) (fd int, err error)
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func Accept(fd int) (nfd int, sa Sockaddr, err error) {
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var rsa RawSockaddrAny
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var len _Socklen = SizeofSockaddrAny
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nfd, err = accept(fd, &rsa, &len)
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if nfd == -1 {
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return
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}
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sa, err = anyToSockaddr(fd, &rsa)
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if err != nil {
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Close(nfd)
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nfd = 0
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}
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return
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}
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func recvmsgRaw(fd int, iov []Iovec, oob []byte, flags int, rsa *RawSockaddrAny) (n, oobn int, recvflags int, err error) {
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var msg Msghdr
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msg.Name = (*byte)(unsafe.Pointer(rsa))
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msg.Namelen = uint32(SizeofSockaddrAny)
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var dummy byte
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if len(oob) > 0 {
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// receive at least one normal byte
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if emptyIovecs(iov) {
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var iova [1]Iovec
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iova[0].Base = &dummy
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iova[0].SetLen(1)
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iov = iova[:]
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}
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msg.Control = (*byte)(unsafe.Pointer(&oob[0]))
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msg.SetControllen(len(oob))
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}
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if len(iov) > 0 {
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msg.Iov = &iov[0]
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msg.SetIovlen(len(iov))
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}
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if n, err = recvmsg(fd, &msg, flags); n == -1 {
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return
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}
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oobn = int(msg.Controllen)
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recvflags = int(msg.Flags)
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return
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}
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func sendmsgN(fd int, iov []Iovec, oob []byte, ptr unsafe.Pointer, salen _Socklen, flags int) (n int, err error) {
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var msg Msghdr
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msg.Name = (*byte)(unsafe.Pointer(ptr))
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msg.Namelen = uint32(salen)
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var dummy byte
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var empty bool
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if len(oob) > 0 {
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// send at least one normal byte
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empty = emptyIovecs(iov)
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if empty {
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var iova [1]Iovec
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iova[0].Base = &dummy
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iova[0].SetLen(1)
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iov = iova[:]
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}
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msg.Control = (*byte)(unsafe.Pointer(&oob[0]))
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msg.SetControllen(len(oob))
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}
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if len(iov) > 0 {
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msg.Iov = &iov[0]
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msg.SetIovlen(len(iov))
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}
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if n, err = sendmsg(fd, &msg, flags); err != nil {
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return 0, err
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}
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if len(oob) > 0 && empty {
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n = 0
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}
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return n, nil
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}
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func anyToSockaddr(fd int, rsa *RawSockaddrAny) (Sockaddr, error) {
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switch rsa.Addr.Family {
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case AF_UNIX:
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pp := (*RawSockaddrUnix)(unsafe.Pointer(rsa))
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sa := new(SockaddrUnix)
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// Some versions of AIX have a bug in getsockname (see IV78655).
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// We can't rely on sa.Len being set correctly.
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n := SizeofSockaddrUnix - 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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n = i
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break
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}
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}
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sa.Name = string(unsafe.Slice((*byte)(unsafe.Pointer(&pp.Path[0])), n))
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return sa, nil
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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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sa.Addr = pp.Addr
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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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sa.ZoneId = pp.Scope_id
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sa.Addr = pp.Addr
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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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func Gettimeofday(tv *Timeval) (err error) {
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err = gettimeofday(tv, nil)
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return
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}
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func Sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) {
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if raceenabled {
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raceReleaseMerge(unsafe.Pointer(&ioSync))
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}
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return sendfile(outfd, infd, offset, count)
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}
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// TODO
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func sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) {
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return -1, ENOSYS
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}
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func direntIno(buf []byte) (uint64, bool) {
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return readInt(buf, unsafe.Offsetof(Dirent{}.Ino), unsafe.Sizeof(Dirent{}.Ino))
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}
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func direntReclen(buf []byte) (uint64, bool) {
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return readInt(buf, unsafe.Offsetof(Dirent{}.Reclen), unsafe.Sizeof(Dirent{}.Reclen))
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}
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func direntNamlen(buf []byte) (uint64, bool) {
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reclen, ok := direntReclen(buf)
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if !ok {
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return 0, false
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}
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return reclen - uint64(unsafe.Offsetof(Dirent{}.Name)), true
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}
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//sys getdirent(fd int, buf []byte) (n int, err error)
|
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|
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func Getdents(fd int, buf []byte) (n int, err error) {
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return getdirent(fd, buf)
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}
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|
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|
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//sys wait4(pid Pid_t, status *_C_int, options int, rusage *Rusage) (wpid Pid_t, err error)
|
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|
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|
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func Wait4(pid int, wstatus *WaitStatus, options int, rusage *Rusage) (wpid int, err error) {
|
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|
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var status _C_int
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|
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var r Pid_t
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err = ERESTART
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|
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// AIX wait4 may return with ERESTART errno, while the processus is still
|
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|
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// active.
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for err == ERESTART {
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r, err = wait4(Pid_t(pid), &status, options, rusage)
|
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}
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wpid = int(r)
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|
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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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|
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|
||
|
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/*
|
||
|
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* Wait
|
||
|
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*/
|
||
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|
|
type WaitStatus uint32
|
||
|
|
|
||
|
|
func (w WaitStatus) Stopped() bool { return w&0x40 != 0 }
|
||
|
|
func (w WaitStatus) StopSignal() Signal {
|
||
|
|
if !w.Stopped() {
|
||
|
|
return -1
|
||
|
|
}
|
||
|
|
return Signal(w>>8) & 0xFF
|
||
|
|
}
|
||
|
|
|
||
|
|
func (w WaitStatus) Exited() bool { return w&0xFF == 0 }
|
||
|
|
func (w WaitStatus) ExitStatus() int {
|
||
|
|
if !w.Exited() {
|
||
|
|
return -1
|
||
|
|
}
|
||
|
|
return int((w >> 8) & 0xFF)
|
||
|
|
}
|
||
|
|
|
||
|
|
func (w WaitStatus) Signaled() bool { return w&0x40 == 0 && w&0xFF != 0 }
|
||
|
|
func (w WaitStatus) Signal() Signal {
|
||
|
|
if !w.Signaled() {
|
||
|
|
return -1
|
||
|
|
}
|
||
|
|
return Signal(w>>16) & 0xFF
|
||
|
|
}
|
||
|
|
|
||
|
|
func (w WaitStatus) Continued() bool { return w&0x01000000 != 0 }
|
||
|
|
|
||
|
|
func (w WaitStatus) CoreDump() bool { return w&0x80 == 0x80 }
|
||
|
|
|
||
|
|
func (w WaitStatus) TrapCause() int { return -1 }
|
||
|
|
|
||
|
|
//sys ioctl(fd int, req int, arg uintptr) (err error)
|
||
|
|
//sys ioctlPtr(fd int, req int, arg unsafe.Pointer) (err error) = ioctl
|
||
|
|
|
||
|
|
// fcntl must never be called with cmd=F_DUP2FD because it doesn't work on AIX
|
||
|
|
// There is no way to create a custom fcntl and to keep //sys fcntl easily,
|
||
|
|
// Therefore, the programmer must call dup2 instead of fcntl in this case.
|
||
|
|
|
||
|
|
// FcntlInt performs a fcntl syscall on fd with the provided command and argument.
|
||
|
|
//sys FcntlInt(fd uintptr, cmd int, arg int) (r int,err error) = fcntl
|
||
|
|
|
||
|
|
// FcntlFlock performs a fcntl syscall for the F_GETLK, F_SETLK or F_SETLKW command.
|
||
|
|
//sys FcntlFlock(fd uintptr, cmd int, lk *Flock_t) (err error) = fcntl
|
||
|
|
|
||
|
|
//sys fcntl(fd int, cmd int, arg int) (val int, err error)
|
||
|
|
|
||
|
|
//sys fsyncRange(fd int, how int, start int64, length int64) (err error) = fsync_range
|
||
|
|
|
||
|
|
func Fsync(fd int) error {
|
||
|
|
return fsyncRange(fd, O_SYNC, 0, 0)
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Direct access
|
||
|
|
*/
|
||
|
|
|
||
|
|
//sys Acct(path string) (err error)
|
||
|
|
//sys Chdir(path string) (err error)
|
||
|
|
//sys Chroot(path string) (err error)
|
||
|
|
//sys Close(fd int) (err error)
|
||
|
|
//sys Dup(oldfd int) (fd int, err error)
|
||
|
|
//sys Exit(code int)
|
||
|
|
//sys Faccessat(dirfd int, path string, mode uint32, flags int) (err error)
|
||
|
|
//sys Fchdir(fd int) (err error)
|
||
|
|
//sys Fchmod(fd int, mode uint32) (err error)
|
||
|
|
//sys Fchmodat(dirfd int, path string, mode uint32, flags int) (err error)
|
||
|
|
//sys Fchownat(dirfd int, path string, uid int, gid int, flags int) (err error)
|
||
|
|
//sys Fdatasync(fd int) (err error)
|
||
|
|
// readdir_r
|
||
|
|
//sysnb Getpgid(pid int) (pgid int, err error)
|
||
|
|
|
||
|
|
//sys Getpgrp() (pid int)
|
||
|
|
|
||
|
|
//sysnb Getpid() (pid int)
|
||
|
|
//sysnb Getppid() (ppid int)
|
||
|
|
//sys Getpriority(which int, who int) (prio int, err error)
|
||
|
|
//sysnb Getrusage(who int, rusage *Rusage) (err error)
|
||
|
|
//sysnb Getsid(pid int) (sid int, err error)
|
||
|
|
//sysnb Kill(pid int, sig Signal) (err error)
|
||
|
|
//sys Klogctl(typ int, buf []byte) (n int, err error) = syslog
|
||
|
|
//sys Mkdir(dirfd int, path string, mode uint32) (err error)
|
||
|
|
//sys Mkdirat(dirfd int, path string, mode uint32) (err error)
|
||
|
|
//sys Mkfifo(path string, mode uint32) (err error)
|
||
|
|
//sys Mknod(path string, mode uint32, dev int) (err error)
|
||
|
|
//sys Mknodat(dirfd int, path string, mode uint32, dev int) (err error)
|
||
|
|
//sys Nanosleep(time *Timespec, leftover *Timespec) (err error)
|
||
|
|
//sys Open(path string, mode int, perm uint32) (fd int, err error) = open64
|
||
|
|
//sys Openat(dirfd int, path string, flags int, mode uint32) (fd int, err error)
|
||
|
|
//sys read(fd int, p []byte) (n int, err error)
|
||
|
|
//sys Readlink(path string, buf []byte) (n int, err error)
|
||
|
|
//sys Renameat(olddirfd int, oldpath string, newdirfd int, newpath string) (err error)
|
||
|
|
//sys Setdomainname(p []byte) (err error)
|
||
|
|
//sys Sethostname(p []byte) (err error)
|
||
|
|
//sysnb Setpgid(pid int, pgid int) (err error)
|
||
|
|
//sysnb Setsid() (pid int, err error)
|
||
|
|
//sysnb Settimeofday(tv *Timeval) (err error)
|
||
|
|
|
||
|
|
//sys Setuid(uid int) (err error)
|
||
|
|
//sys Setgid(uid int) (err error)
|
||
|
|
|
||
|
|
//sys Setpriority(which int, who int, prio int) (err error)
|
||
|
|
//sys Statx(dirfd int, path string, flags int, mask int, stat *Statx_t) (err error)
|
||
|
|
//sys Sync()
|
||
|
|
//sysnb Times(tms *Tms) (ticks uintptr, err error)
|
||
|
|
//sysnb Umask(mask int) (oldmask int)
|
||
|
|
//sysnb Uname(buf *Utsname) (err error)
|
||
|
|
//sys Unlink(path string) (err error)
|
||
|
|
//sys Unlinkat(dirfd int, path string, flags int) (err error)
|
||
|
|
//sys Ustat(dev int, ubuf *Ustat_t) (err error)
|
||
|
|
//sys write(fd int, p []byte) (n int, err error)
|
||
|
|
|
||
|
|
//sys Dup2(oldfd int, newfd int) (err error)
|
||
|
|
//sys Fadvise(fd int, offset int64, length int64, advice int) (err error) = posix_fadvise64
|
||
|
|
//sys Fchown(fd int, uid int, gid int) (err error)
|
||
|
|
//sys fstat(fd int, stat *Stat_t) (err error)
|
||
|
|
//sys fstatat(dirfd int, path string, stat *Stat_t, flags int) (err error) = fstatat
|
||
|
|
//sys Fstatfs(fd int, buf *Statfs_t) (err error)
|
||
|
|
//sys Ftruncate(fd int, length int64) (err error)
|
||
|
|
//sysnb Getegid() (egid int)
|
||
|
|
//sysnb Geteuid() (euid int)
|
||
|
|
//sysnb Getgid() (gid int)
|
||
|
|
//sysnb Getuid() (uid int)
|
||
|
|
//sys Lchown(path string, uid int, gid int) (err error)
|
||
|
|
//sys Listen(s int, n int) (err error)
|
||
|
|
//sys lstat(path string, stat *Stat_t) (err error)
|
||
|
|
//sys Pause() (err error)
|
||
|
|
//sys pread(fd int, p []byte, offset int64) (n int, err error) = pread64
|
||
|
|
//sys pwrite(fd int, p []byte, offset int64) (n int, err error) = pwrite64
|
||
|
|
//sys Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, err error)
|
||
|
|
//sys Pselect(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timespec, sigmask *Sigset_t) (n int, err error)
|
||
|
|
//sysnb Setregid(rgid int, egid int) (err error)
|
||
|
|
//sysnb Setreuid(ruid int, euid int) (err error)
|
||
|
|
//sys Shutdown(fd int, how int) (err error)
|
||
|
|
//sys Splice(rfd int, roff *int64, wfd int, woff *int64, len int, flags int) (n int64, err error)
|
||
|
|
//sys stat(path string, statptr *Stat_t) (err error)
|
||
|
|
//sys Statfs(path string, buf *Statfs_t) (err error)
|
||
|
|
//sys Truncate(path string, length int64) (err error)
|
||
|
|
|
||
|
|
//sys bind(s int, addr unsafe.Pointer, addrlen _Socklen) (err error)
|
||
|
|
//sys connect(s int, addr unsafe.Pointer, addrlen _Socklen) (err error)
|
||
|
|
//sysnb getgroups(n int, list *_Gid_t) (nn int, err error)
|
||
|
|
//sysnb setgroups(n int, list *_Gid_t) (err error)
|
||
|
|
//sys getsockopt(s int, level int, name int, val unsafe.Pointer, vallen *_Socklen) (err error)
|
||
|
|
//sys setsockopt(s int, level int, name int, val unsafe.Pointer, vallen uintptr) (err error)
|
||
|
|
//sysnb socket(domain int, typ int, proto int) (fd int, err error)
|
||
|
|
//sysnb socketpair(domain int, typ int, proto int, fd *[2]int32) (err error)
|
||
|
|
//sysnb getpeername(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error)
|
||
|
|
//sysnb getsockname(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error)
|
||
|
|
//sys recvfrom(fd int, p []byte, flags int, from *RawSockaddrAny, fromlen *_Socklen) (n int, err error)
|
||
|
|
//sys sendto(s int, buf []byte, flags int, to unsafe.Pointer, addrlen _Socklen) (err error)
|
||
|
|
|
||
|
|
// In order to use msghdr structure with Control, Controllen, nrecvmsg and nsendmsg must be used.
|
||
|
|
//sys recvmsg(s int, msg *Msghdr, flags int) (n int, err error) = nrecvmsg
|
||
|
|
//sys sendmsg(s int, msg *Msghdr, flags int) (n int, err error) = nsendmsg
|
||
|
|
|
||
|
|
//sys munmap(addr uintptr, length uintptr) (err error)
|
||
|
|
//sys Madvise(b []byte, advice int) (err error)
|
||
|
|
//sys Mprotect(b []byte, prot int) (err error)
|
||
|
|
//sys Mlock(b []byte) (err error)
|
||
|
|
//sys Mlockall(flags int) (err error)
|
||
|
|
//sys Msync(b []byte, flags int) (err error)
|
||
|
|
//sys Munlock(b []byte) (err error)
|
||
|
|
//sys Munlockall() (err error)
|
||
|
|
|
||
|
|
//sysnb pipe(p *[2]_C_int) (err error)
|
||
|
|
|
||
|
|
func Pipe(p []int) (err error) {
|
||
|
|
if len(p) != 2 {
|
||
|
|
return EINVAL
|
||
|
|
}
|
||
|
|
var pp [2]_C_int
|
||
|
|
err = pipe(&pp)
|
||
|
|
if err == nil {
|
||
|
|
p[0] = int(pp[0])
|
||
|
|
p[1] = int(pp[1])
|
||
|
|
}
|
||
|
|
return
|
||
|
|
}
|
||
|
|
|
||
|
|
//sys poll(fds *PollFd, nfds int, timeout int) (n int, err error)
|
||
|
|
|
||
|
|
func Poll(fds []PollFd, timeout int) (n int, err error) {
|
||
|
|
if len(fds) == 0 {
|
||
|
|
return poll(nil, 0, timeout)
|
||
|
|
}
|
||
|
|
return poll(&fds[0], len(fds), timeout)
|
||
|
|
}
|
||
|
|
|
||
|
|
//sys gettimeofday(tv *Timeval, tzp *Timezone) (err error)
|
||
|
|
//sysnb Time(t *Time_t) (tt Time_t, err error)
|
||
|
|
//sys Utime(path string, buf *Utimbuf) (err error)
|
||
|
|
|
||
|
|
//sys Getsystemcfg(label int) (n uint64)
|
||
|
|
|
||
|
|
//sys umount(target string) (err error)
|
||
|
|
|
||
|
|
func Unmount(target string, flags int) (err error) {
|
||
|
|
if flags != 0 {
|
||
|
|
// AIX doesn't have any flags for umount.
|
||
|
|
return ENOSYS
|
||
|
|
}
|
||
|
|
return umount(target)
|
||
|
|
}
|