// Copyright 2018 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build aix
// Aix system calls.
// This file is compiled as ordinary Go code,
// but it is also input to mksyscall,
// which parses the //sys lines and generates system call stubs.
// Note that sometimes we use a lowercase //sys name and
// wrap it in our own nicer implementation.
package unix
import "unsafe"
/*
* Wrapped
*/
//sys utimes(path string, times *[2]Timeval) (err error)
func Utimes(path string, tv []Timeval) error {
if len(tv) != 2 {
return EINVAL
}
return utimes(path, (*[2]Timeval)(unsafe.Pointer(&tv[0])))
}
//sys utimensat(dirfd int, path string, times *[2]Timespec, flag int) (err error)
func UtimesNano(path string, ts []Timespec) error {
if len(ts) != 2 {
return EINVAL
}
return utimensat(AT_FDCWD, path, (*[2]Timespec)(unsafe.Pointer(&ts[0])), 0)
}
func UtimesNanoAt(dirfd int, path string, ts []Timespec, flags int) error {
if ts == nil {
return utimensat(dirfd, path, nil, flags)
}
if len(ts) != 2 {
return EINVAL
}
return utimensat(dirfd, path, (*[2]Timespec)(unsafe.Pointer(&ts[0])), flags)
}
func (sa *SockaddrInet4) sockaddr() (unsafe.Pointer, _Socklen, error) {
if sa.Port < 0 || sa.Port > 0xFFFF {
return nil, 0, EINVAL
}
sa.raw.Family = AF_INET
p := (*[2]byte)(unsafe.Pointer(&sa.raw.Port))
p[0] = byte(sa.Port >> 8)
p[1] = byte(sa.Port)
for i := 0; i < len(sa.Addr); i++ {
sa.raw.Addr[i] = sa.Addr[i]
}
return unsafe.Pointer(&sa.raw), SizeofSockaddrInet4, nil
}
func (sa *SockaddrInet6) sockaddr() (unsafe.Pointer, _Socklen, error) {
if sa.Port < 0 || sa.Port > 0xFFFF {
return nil, 0, EINVAL
}
sa.raw.Family = AF_INET6
p := (*[2]byte)(unsafe.Pointer(&sa.raw.Port))
p[0] = byte(sa.Port >> 8)
p[1] = byte(sa.Port)
sa.raw.Scope_id = sa.ZoneId
for i := 0; i < len(sa.Addr); i++ {
sa.raw.Addr[i] = sa.Addr[i]
}
return unsafe.Pointer(&sa.raw), SizeofSockaddrInet6, nil
}
func (sa *SockaddrUnix) sockaddr() (unsafe.Pointer, _Socklen, error) {
name := sa.Name
n := len(name)
if n > len(sa.raw.Path) {
return nil, 0, EINVAL
}
if n == len(sa.raw.Path) && name[0] != '@' {
return nil, 0, EINVAL
}
sa.raw.Family = AF_UNIX
for i := 0; i < n; i++ {
sa.raw.Path[i] = uint8(name[i])
}
// length is family (uint16), name, NUL.
sl := _Socklen(2)
if n > 0 {
sl += _Socklen(n) + 1
}
if sa.raw.Path[0] == '@' {
sa.raw.Path[0] = 0
// Don't count trailing NUL for abstract address.
sl--
}
return unsafe.Pointer(&sa.raw), sl, nil
}
func Getsockname(fd int) (sa Sockaddr, err error) {
var rsa RawSockaddrAny
var len _Socklen = SizeofSockaddrAny
if err = getsockname(fd, &rsa, &len); err != nil {
return
}
return anyToSockaddr(fd, &rsa)
}
//sys getcwd(buf []byte) (err error)
const ImplementsGetwd = true
func Getwd() (ret string, err error) {
for len := uint64(4096); ; len *= 2 {
b := make([]byte, len)
err := getcwd(b)
if err == nil {
i := 0
for b[i] != 0 {
i++
}
return string(b[0:i]), nil
}
if err != ERANGE {
return "", err
}
}
}
func Getcwd(buf []byte) (n int, err error) {
err = getcwd(buf)
if err == nil {
i := 0
for buf[i] != 0 {
i++
}
n = i + 1
}
return
}
func Getgroups() (gids []int, err error) {
n, err := getgroups(0, nil)
if err != nil {
return nil, err
}
if n == 0 {
return nil, nil
}
// Sanity check group count. Max is 16 on BSD.
if n < 0 || n > 1000 {
return nil, EINVAL
}
a := make([]_Gid_t, n)
n, err = getgroups(n, &a[0])
if err != nil {
return nil, err
}
gids = make([]int, n)
for i, v := range a[0:n] {
gids[i] = int(v)
}
return
}
func Setgroups(gids []int) (err error) {
if len(gids) == 0 {
return setgroups(0, nil)
}
a := make([]_Gid_t, len(gids))
for i, v := range gids {
a[i] = _Gid_t(v)
}
return setgroups(len(a), &a[0])
}
/*
* Socket
*/
//sys accept(s int, rsa *RawSockaddrAny, addrlen *_Socklen) (fd int, err error)
func Accept(fd int) (nfd int, sa Sockaddr, err error) {
var rsa RawSockaddrAny
var len _Socklen = SizeofSockaddrAny
nfd, err = accept(fd, &rsa, &len)
if nfd == -1 {
return
}
sa, err = anyToSockaddr(fd, &rsa)
if err != nil {
Close(nfd)
nfd = 0
}
return
}
func Recvmsg(fd int, p, oob []byte, flags int) (n, oobn int, recvflags int, from Sockaddr, err error) {
// Recvmsg not implemented on AIX
sa := new(SockaddrUnix)
return -1, -1, -1, sa, ENOSYS
}
func Sendmsg(fd int, p, oob []byte, to Sockaddr, flags int) (err error) {
_, err = SendmsgN(fd, p, oob, to, flags)
return
}
func SendmsgN(fd int, p, oob []byte, to Sockaddr, flags int) (n int, err error) {
// SendmsgN not implemented on AIX
return -1, ENOSYS
}
func anyToSockaddr(fd int, rsa *RawSockaddrAny) (Sockaddr, error) {
switch rsa.Addr.Family {
case AF_UNIX:
pp := (*RawSockaddrUnix)(unsafe.Pointer(rsa))
sa := new(SockaddrUnix)
// Some versions of AIX have a bug in getsockname (see IV78655).
// We can't rely on sa.Len being set correctly.
n := SizeofSockaddrUnix - 3 // subtract leading Family, Len, terminating NUL.
for i := 0; i < n; i++ {
if pp.Path[i] == 0 {
n = i
break
}
}
bytes := (*[10000]byte)(unsafe.Pointer(&pp.Path[0]))[0:n]
sa.Name = string(bytes)
return sa, nil
case AF_INET:
pp := (*RawSockaddrInet4)(unsafe.Pointer(rsa))
sa := new(SockaddrInet4)
p := (*[2]byte)(unsafe.Pointer(&pp.Port))
sa.Port = int(p[0])<<8 + int(p[1])
for i := 0; i < len(sa.Addr); i++ {
sa.Addr[i] = pp.Addr[i]
}
return sa, nil
case AF_INET6:
pp := (*RawSockaddrInet6)(unsafe.Pointer(rsa))
sa := new(SockaddrInet6)
p := (*[2]byte)(unsafe.Pointer(&pp.Port))
sa.Port = int(p[0])<<8 + int(p[1])
sa.ZoneId = pp.Scope_id
for i := 0; i < len(sa.Addr); i++ {
sa.Addr[i] = pp.Addr[i]
}
return sa, nil
}
return nil, EAFNOSUPPORT
}
func Gettimeofday(tv *Timeval) (err error) {
err = gettimeofday(tv, nil)
return
}
func Sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) {
if raceenabled {
raceReleaseMerge(unsafe.Pointer(&ioSync))
}
return sendfile(outfd, infd, offset, count)
}
// TODO
func sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) {
return -1, ENOSYS
}
func direntIno(buf []byte) (uint64, bool) {
return readInt(buf, unsafe.Offsetof(Dirent{}.Ino), unsafe.Sizeof(Dirent{}.Ino))
}
func direntReclen(buf []byte) (uint64, bool) {
return readInt(buf, unsafe.Offsetof(Dirent{}.Reclen), unsafe.Sizeof(Dirent{}.Reclen))
}
func direntNamlen(buf []byte) (uint64, bool) {
reclen, ok := direntReclen(buf)
if !ok {
return 0, false
}
return reclen - uint64(unsafe.Offsetof(Dirent{}.Name)), true
}
//sys getdirent(fd int, buf []byte) (n int, err error)
func Getdents(fd int, buf []byte) (n int, err error) {
return getdirent(fd, buf)
}
//sys wait4(pid Pid_t, status *_C_int, options int, rusage *Rusage) (wpid Pid_t, err error)
func Wait4(pid int, wstatus *WaitStatus, options int, rusage *Rusage) (wpid int, err error) {
var status _C_int
var r Pid_t
err = ERESTART
// AIX wait4 may return with ERESTART errno, while the processus is still
// active.
for err == ERESTART {
r, err = wait4(Pid_t(pid), &status, options, rusage)
}
wpid = int(r)
if wstatus != nil {
*wstatus = WaitStatus(status)
}
return
}
/*
* Wait
*/
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 uint, arg uintptr) (err error)
// 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)
/*
* 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)
//sys Fsync(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 readlen(fd int, p *byte, np int) (n int, err error) = read
//sys writelen(fd int, p *byte, np int) (n int, err error) = write
//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)
var mapper = &mmapper{
active: make(map[*byte][]byte),
mmap: mmap,
munmap: munmap,
}
func Mmap(fd int, offset int64, length int, prot int, flags int) (data []byte, err error) {
return mapper.Mmap(fd, offset, length, prot, flags)
}
func Munmap(b []byte) (err error) {
return mapper.Munmap(b)
}
//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)
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)
}