cubefs

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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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// +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] == '@' {
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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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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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//sys	wait4(pid Pid_t, status *_C_int, options int, rusage *Rusage) (wpid Pid_t, err error)
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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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	var r Pid_t
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	err = ERESTART
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	// AIX wait4 may return with ERESTART errno, while the processus is still
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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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	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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 * Wait
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 */
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type WaitStatus uint32
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func (w WaitStatus) Stopped() bool { return w&0x40 != 0 }
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func (w WaitStatus) StopSignal() Signal {
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	if !w.Stopped() {
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		return -1
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	}
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	return Signal(w>>8) & 0xFF
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}
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func (w WaitStatus) Exited() bool { return w&0xFF == 0 }
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func (w WaitStatus) ExitStatus() int {
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	if !w.Exited() {
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		return -1
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	}
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	return int((w >> 8) & 0xFF)
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}
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func (w WaitStatus) Signaled() bool { return w&0x40 == 0 && w&0xFF != 0 }
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func (w WaitStatus) Signal() Signal {
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	if !w.Signaled() {
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		return -1
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	}
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	return Signal(w>>16) & 0xFF
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}
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func (w WaitStatus) Continued() bool { return w&0x01000000 != 0 }
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func (w WaitStatus) CoreDump() bool { return w&0x80 == 0x80 }
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func (w WaitStatus) TrapCause() int { return -1 }
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//sys	ioctl(fd int, req int, arg uintptr) (err error)
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//sys	ioctlPtr(fd int, req int, arg unsafe.Pointer) (err error) = ioctl
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// fcntl must never be called with cmd=F_DUP2FD because it doesn't work on AIX
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// There is no way to create a custom fcntl and to keep //sys fcntl easily,
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// Therefore, the programmer must call dup2 instead of fcntl in this case.
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// FcntlInt performs a fcntl syscall on fd with the provided command and argument.
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//sys	FcntlInt(fd uintptr, cmd int, arg int) (r int,err error) = fcntl
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// FcntlFlock performs a fcntl syscall for the F_GETLK, F_SETLK or F_SETLKW command.
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//sys	FcntlFlock(fd uintptr, cmd int, lk *Flock_t) (err error) = fcntl
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//sys	fcntl(fd int, cmd int, arg int) (val int, err error)
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//sys	fsyncRange(fd int, how int, start int64, length int64) (err error) = fsync_range
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func Fsync(fd int) error {
429
	return fsyncRange(fd, O_SYNC, 0, 0)
430
}
431

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/*
433
 * Direct access
434
 */
435

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//sys	Acct(path string) (err error)
437
//sys	Chdir(path string) (err error)
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//sys	Chroot(path string) (err error)
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//sys	Close(fd int) (err error)
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//sys	Dup(oldfd int) (fd int, err error)
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//sys	Exit(code int)
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//sys	Faccessat(dirfd int, path string, mode uint32, flags int) (err error)
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//sys	Fchdir(fd int) (err error)
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//sys	Fchmod(fd int, mode uint32) (err error)
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//sys	Fchmodat(dirfd int, path string, mode uint32, flags int) (err error)
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//sys	Fchownat(dirfd int, path string, uid int, gid int, flags int) (err error)
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//sys	Fdatasync(fd int) (err error)
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// readdir_r
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//sysnb	Getpgid(pid int) (pgid int, err error)
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//sys	Getpgrp() (pid int)
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//sysnb	Getpid() (pid int)
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//sysnb	Getppid() (ppid int)
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//sys	Getpriority(which int, who int) (prio int, err error)
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//sysnb	Getrusage(who int, rusage *Rusage) (err error)
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//sysnb	Getsid(pid int) (sid int, err error)
458
//sysnb	Kill(pid int, sig Signal) (err error)
459
//sys	Klogctl(typ int, buf []byte) (n int, err error) = syslog
460
//sys	Mkdir(dirfd int, path string, mode uint32) (err error)
461
//sys	Mkdirat(dirfd int, path string, mode uint32) (err error)
462
//sys	Mkfifo(path string, mode uint32) (err error)
463
//sys	Mknod(path string, mode uint32, dev int) (err error)
464
//sys	Mknodat(dirfd int, path string, mode uint32, dev int) (err error)
465
//sys	Nanosleep(time *Timespec, leftover *Timespec) (err error)
466
//sys	Open(path string, mode int, perm uint32) (fd int, err error) = open64
467
//sys	Openat(dirfd int, path string, flags int, mode uint32) (fd int, err error)
468
//sys	read(fd int, p []byte) (n int, err error)
469
//sys	Readlink(path string, buf []byte) (n int, err error)
470
//sys	Renameat(olddirfd int, oldpath string, newdirfd int, newpath string) (err error)
471
//sys	Setdomainname(p []byte) (err error)
472
//sys	Sethostname(p []byte) (err error)
473
//sysnb	Setpgid(pid int, pgid int) (err error)
474
//sysnb	Setsid() (pid int, err error)
475
//sysnb	Settimeofday(tv *Timeval) (err error)
476

477
//sys	Setuid(uid int) (err error)
478
//sys	Setgid(uid int) (err error)
479

480
//sys	Setpriority(which int, who int, prio int) (err error)
481
//sys	Statx(dirfd int, path string, flags int, mask int, stat *Statx_t) (err error)
482
//sys	Sync()
483
//sysnb	Times(tms *Tms) (ticks uintptr, err error)
484
//sysnb	Umask(mask int) (oldmask int)
485
//sysnb	Uname(buf *Utsname) (err error)
486
//sys	Unlink(path string) (err error)
487
//sys	Unlinkat(dirfd int, path string, flags int) (err error)
488
//sys	Ustat(dev int, ubuf *Ustat_t) (err error)
489
//sys	write(fd int, p []byte) (n int, err error)
490
//sys	readlen(fd int, p *byte, np int) (n int, err error) = read
491
//sys	writelen(fd int, p *byte, np int) (n int, err error) = write
492

493
//sys	Dup2(oldfd int, newfd int) (err error)
494
//sys	Fadvise(fd int, offset int64, length int64, advice int) (err error) = posix_fadvise64
495
//sys	Fchown(fd int, uid int, gid int) (err error)
496
//sys	fstat(fd int, stat *Stat_t) (err error)
497
//sys	fstatat(dirfd int, path string, stat *Stat_t, flags int) (err error) = fstatat
498
//sys	Fstatfs(fd int, buf *Statfs_t) (err error)
499
//sys	Ftruncate(fd int, length int64) (err error)
500
//sysnb	Getegid() (egid int)
501
//sysnb	Geteuid() (euid int)
502
//sysnb	Getgid() (gid int)
503
//sysnb	Getuid() (uid int)
504
//sys	Lchown(path string, uid int, gid int) (err error)
505
//sys	Listen(s int, n int) (err error)
506
//sys	lstat(path string, stat *Stat_t) (err error)
507
//sys	Pause() (err error)
508
//sys	pread(fd int, p []byte, offset int64) (n int, err error) = pread64
509
//sys	pwrite(fd int, p []byte, offset int64) (n int, err error) = pwrite64
510
//sys	Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, err error)
511
//sys	Pselect(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timespec, sigmask *Sigset_t) (n int, err error)
512
//sysnb	Setregid(rgid int, egid int) (err error)
513
//sysnb	Setreuid(ruid int, euid int) (err error)
514
//sys	Shutdown(fd int, how int) (err error)
515
//sys	Splice(rfd int, roff *int64, wfd int, woff *int64, len int, flags int) (n int64, err error)
516
//sys	stat(path string, statptr *Stat_t) (err error)
517
//sys	Statfs(path string, buf *Statfs_t) (err error)
518
//sys	Truncate(path string, length int64) (err error)
519

520
//sys	bind(s int, addr unsafe.Pointer, addrlen _Socklen) (err error)
521
//sys	connect(s int, addr unsafe.Pointer, addrlen _Socklen) (err error)
522
//sysnb	getgroups(n int, list *_Gid_t) (nn int, err error)
523
//sysnb	setgroups(n int, list *_Gid_t) (err error)
524
//sys	getsockopt(s int, level int, name int, val unsafe.Pointer, vallen *_Socklen) (err error)
525
//sys	setsockopt(s int, level int, name int, val unsafe.Pointer, vallen uintptr) (err error)
526
//sysnb	socket(domain int, typ int, proto int) (fd int, err error)
527
//sysnb	socketpair(domain int, typ int, proto int, fd *[2]int32) (err error)
528
//sysnb	getpeername(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error)
529
//sysnb	getsockname(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error)
530
//sys	recvfrom(fd int, p []byte, flags int, from *RawSockaddrAny, fromlen *_Socklen) (n int, err error)
531
//sys	sendto(s int, buf []byte, flags int, to unsafe.Pointer, addrlen _Socklen) (err error)
532

533
// In order to use msghdr structure with Control, Controllen, nrecvmsg and nsendmsg must be used.
534
//sys	recvmsg(s int, msg *Msghdr, flags int) (n int, err error) = nrecvmsg
535
//sys	sendmsg(s int, msg *Msghdr, flags int) (n int, err error) = nsendmsg
536

537
//sys	munmap(addr uintptr, length uintptr) (err error)
538

539
var mapper = &mmapper{
540
	active: make(map[*byte][]byte),
541
	mmap:   mmap,
542
	munmap: munmap,
543
}
544

545
func Mmap(fd int, offset int64, length int, prot int, flags int) (data []byte, err error) {
546
	return mapper.Mmap(fd, offset, length, prot, flags)
547
}
548

549
func Munmap(b []byte) (err error) {
550
	return mapper.Munmap(b)
551
}
552

553
//sys	Madvise(b []byte, advice int) (err error)
554
//sys	Mprotect(b []byte, prot int) (err error)
555
//sys	Mlock(b []byte) (err error)
556
//sys	Mlockall(flags int) (err error)
557
//sys	Msync(b []byte, flags int) (err error)
558
//sys	Munlock(b []byte) (err error)
559
//sys	Munlockall() (err error)
560

561
//sysnb	pipe(p *[2]_C_int) (err error)
562

563
func Pipe(p []int) (err error) {
564
	if len(p) != 2 {
565
		return EINVAL
566
	}
567
	var pp [2]_C_int
568
	err = pipe(&pp)
569
	if err == nil {
570
		p[0] = int(pp[0])
571
		p[1] = int(pp[1])
572
	}
573
	return
574
}
575

576
//sys	poll(fds *PollFd, nfds int, timeout int) (n int, err error)
577

578
func Poll(fds []PollFd, timeout int) (n int, err error) {
579
	if len(fds) == 0 {
580
		return poll(nil, 0, timeout)
581
	}
582
	return poll(&fds[0], len(fds), timeout)
583
}
584

585
//sys	gettimeofday(tv *Timeval, tzp *Timezone) (err error)
586
//sysnb	Time(t *Time_t) (tt Time_t, err error)
587
//sys	Utime(path string, buf *Utimbuf) (err error)
588

589
//sys	Getsystemcfg(label int) (n uint64)
590

591
//sys	umount(target string) (err error)
592

593
func Unmount(target string, flags int) (err error) {
594
	if flags != 0 {
595
		// AIX doesn't have any flags for umount.
596
		return ENOSYS
597
	}
598
	return umount(target)
599
}
600