1 // Copyright 2018 The Go Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style
3 // license that can be found in the LICENSE file.
8 // This file is compiled as ordinary Go code,
9 // but it is also input to mksyscall,
10 // which parses the //sys lines and generates system call stubs.
11 // Note that sometimes we use a lowercase //sys name and
12 // wrap it in our own nicer implementation.
22 func Access(path string, mode uint32) (err error) {
23 return Faccessat(AT_FDCWD, path, mode, 0)
26 func Chmod(path string, mode uint32) (err error) {
27 return Fchmodat(AT_FDCWD, path, mode, 0)
30 func Chown(path string, uid int, gid int) (err error) {
31 return Fchownat(AT_FDCWD, path, uid, gid, 0)
34 func Creat(path string, mode uint32) (fd int, err error) {
35 return Open(path, O_CREAT|O_WRONLY|O_TRUNC, mode)
38 //sys utimes(path string, times *[2]Timeval) (err error)
39 func Utimes(path string, tv []Timeval) error {
43 return utimes(path, (*[2]Timeval)(unsafe.Pointer(&tv[0])))
46 //sys utimensat(dirfd int, path string, times *[2]Timespec, flag int) (err error)
47 func UtimesNano(path string, ts []Timespec) error {
51 return utimensat(AT_FDCWD, path, (*[2]Timespec)(unsafe.Pointer(&ts[0])), 0)
54 func UtimesNanoAt(dirfd int, path string, ts []Timespec, flags int) error {
56 return utimensat(dirfd, path, nil, flags)
61 return utimensat(dirfd, path, (*[2]Timespec)(unsafe.Pointer(&ts[0])), flags)
64 func (sa *SockaddrInet4) sockaddr() (unsafe.Pointer, _Socklen, error) {
65 if sa.Port < 0 || sa.Port > 0xFFFF {
68 sa.raw.Family = AF_INET
69 p := (*[2]byte)(unsafe.Pointer(&sa.raw.Port))
70 p[0] = byte(sa.Port >> 8)
72 for i := 0; i < len(sa.Addr); i++ {
73 sa.raw.Addr[i] = sa.Addr[i]
75 return unsafe.Pointer(&sa.raw), SizeofSockaddrInet4, nil
78 func (sa *SockaddrInet6) sockaddr() (unsafe.Pointer, _Socklen, error) {
79 if sa.Port < 0 || sa.Port > 0xFFFF {
82 sa.raw.Family = AF_INET6
83 p := (*[2]byte)(unsafe.Pointer(&sa.raw.Port))
84 p[0] = byte(sa.Port >> 8)
86 sa.raw.Scope_id = sa.ZoneId
87 for i := 0; i < len(sa.Addr); i++ {
88 sa.raw.Addr[i] = sa.Addr[i]
90 return unsafe.Pointer(&sa.raw), SizeofSockaddrInet6, nil
93 func (sa *SockaddrUnix) sockaddr() (unsafe.Pointer, _Socklen, error) {
96 if n > len(sa.raw.Path) {
99 if n == len(sa.raw.Path) && name[0] != '@' {
100 return nil, 0, EINVAL
102 sa.raw.Family = AF_UNIX
103 for i := 0; i < n; i++ {
104 sa.raw.Path[i] = uint8(name[i])
106 // length is family (uint16), name, NUL.
109 sl += _Socklen(n) + 1
111 if sa.raw.Path[0] == '@' {
113 // Don't count trailing NUL for abstract address.
117 return unsafe.Pointer(&sa.raw), sl, nil
120 func Getsockname(fd int) (sa Sockaddr, err error) {
121 var rsa RawSockaddrAny
122 var len _Socklen = SizeofSockaddrAny
123 if err = getsockname(fd, &rsa, &len); err != nil {
126 return anyToSockaddr(fd, &rsa)
129 //sys getcwd(buf []byte) (err error)
131 const ImplementsGetwd = true
133 func Getwd() (ret string, err error) {
134 for len := uint64(4096); ; len *= 2 {
135 b := make([]byte, len)
142 return string(b[0:i]), nil
150 func Getcwd(buf []byte) (n int, err error) {
162 func Getgroups() (gids []int, err error) {
163 n, err := getgroups(0, nil)
171 // Sanity check group count. Max is 16 on BSD.
172 if n < 0 || n > 1000 {
176 a := make([]_Gid_t, n)
177 n, err = getgroups(n, &a[0])
181 gids = make([]int, n)
182 for i, v := range a[0:n] {
188 func Setgroups(gids []int) (err error) {
190 return setgroups(0, nil)
193 a := make([]_Gid_t, len(gids))
194 for i, v := range gids {
197 return setgroups(len(a), &a[0])
204 //sys accept(s int, rsa *RawSockaddrAny, addrlen *_Socklen) (fd int, err error)
206 func Accept(fd int) (nfd int, sa Sockaddr, err error) {
207 var rsa RawSockaddrAny
208 var len _Socklen = SizeofSockaddrAny
209 nfd, err = accept(fd, &rsa, &len)
213 sa, err = anyToSockaddr(fd, &rsa)
221 func Recvmsg(fd int, p, oob []byte, flags int) (n, oobn int, recvflags int, from Sockaddr, err error) {
222 // Recvmsg not implemented on AIX
223 sa := new(SockaddrUnix)
224 return -1, -1, -1, sa, ENOSYS
227 func Sendmsg(fd int, p, oob []byte, to Sockaddr, flags int) (err error) {
228 _, err = SendmsgN(fd, p, oob, to, flags)
232 func SendmsgN(fd int, p, oob []byte, to Sockaddr, flags int) (n int, err error) {
233 // SendmsgN not implemented on AIX
237 func anyToSockaddr(fd int, rsa *RawSockaddrAny) (Sockaddr, error) {
238 switch rsa.Addr.Family {
241 pp := (*RawSockaddrUnix)(unsafe.Pointer(rsa))
242 sa := new(SockaddrUnix)
244 // Some versions of AIX have a bug in getsockname (see IV78655).
245 // We can't rely on sa.Len being set correctly.
246 n := SizeofSockaddrUnix - 3 // subtract leading Family, Len, terminating NUL.
247 for i := 0; i < n; i++ {
254 bytes := (*[10000]byte)(unsafe.Pointer(&pp.Path[0]))[0:n]
255 sa.Name = string(bytes)
259 pp := (*RawSockaddrInet4)(unsafe.Pointer(rsa))
260 sa := new(SockaddrInet4)
261 p := (*[2]byte)(unsafe.Pointer(&pp.Port))
262 sa.Port = int(p[0])<<8 + int(p[1])
263 for i := 0; i < len(sa.Addr); i++ {
264 sa.Addr[i] = pp.Addr[i]
269 pp := (*RawSockaddrInet6)(unsafe.Pointer(rsa))
270 sa := new(SockaddrInet6)
271 p := (*[2]byte)(unsafe.Pointer(&pp.Port))
272 sa.Port = int(p[0])<<8 + int(p[1])
273 sa.ZoneId = pp.Scope_id
274 for i := 0; i < len(sa.Addr); i++ {
275 sa.Addr[i] = pp.Addr[i]
279 return nil, EAFNOSUPPORT
282 func Gettimeofday(tv *Timeval) (err error) {
283 err = gettimeofday(tv, nil)
287 func Sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) {
289 raceReleaseMerge(unsafe.Pointer(&ioSync))
291 return sendfile(outfd, infd, offset, count)
295 func sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) {
299 func direntIno(buf []byte) (uint64, bool) {
300 return readInt(buf, unsafe.Offsetof(Dirent{}.Ino), unsafe.Sizeof(Dirent{}.Ino))
303 func direntReclen(buf []byte) (uint64, bool) {
304 return readInt(buf, unsafe.Offsetof(Dirent{}.Reclen), unsafe.Sizeof(Dirent{}.Reclen))
307 func direntNamlen(buf []byte) (uint64, bool) {
308 reclen, ok := direntReclen(buf)
312 return reclen - uint64(unsafe.Offsetof(Dirent{}.Name)), true
315 //sys getdirent(fd int, buf []byte) (n int, err error)
316 func Getdents(fd int, buf []byte) (n int, err error) {
317 return getdirent(fd, buf)
320 //sys wait4(pid Pid_t, status *_C_int, options int, rusage *Rusage) (wpid Pid_t, err error)
321 func Wait4(pid int, wstatus *WaitStatus, options int, rusage *Rusage) (wpid int, err error) {
325 // AIX wait4 may return with ERESTART errno, while the processus is still
327 for err == ERESTART {
328 r, err = wait4(Pid_t(pid), &status, options, rusage)
332 *wstatus = WaitStatus(status)
341 type WaitStatus uint32
343 func (w WaitStatus) Stopped() bool { return w&0x40 != 0 }
344 func (w WaitStatus) StopSignal() Signal {
348 return Signal(w>>8) & 0xFF
351 func (w WaitStatus) Exited() bool { return w&0xFF == 0 }
352 func (w WaitStatus) ExitStatus() int {
356 return int((w >> 8) & 0xFF)
359 func (w WaitStatus) Signaled() bool { return w&0x40 == 0 && w&0xFF != 0 }
360 func (w WaitStatus) Signal() Signal {
364 return Signal(w>>16) & 0xFF
367 func (w WaitStatus) Continued() bool { return w&0x01000000 != 0 }
369 func (w WaitStatus) CoreDump() bool { return w&0x80 == 0x80 }
371 func (w WaitStatus) TrapCause() int { return -1 }
373 //sys ioctl(fd int, req uint, arg uintptr) (err error)
375 // fcntl must never be called with cmd=F_DUP2FD because it doesn't work on AIX
376 // There is no way to create a custom fcntl and to keep //sys fcntl easily,
377 // Therefore, the programmer must call dup2 instead of fcntl in this case.
379 // FcntlInt performs a fcntl syscall on fd with the provided command and argument.
380 //sys FcntlInt(fd uintptr, cmd int, arg int) (r int,err error) = fcntl
382 // FcntlFlock performs a fcntl syscall for the F_GETLK, F_SETLK or F_SETLKW command.
383 //sys FcntlFlock(fd uintptr, cmd int, lk *Flock_t) (err error) = fcntl
385 //sys fcntl(fd int, cmd int, arg int) (val int, err error)
391 //sys Acct(path string) (err error)
392 //sys Chdir(path string) (err error)
393 //sys Chroot(path string) (err error)
394 //sys Close(fd int) (err error)
395 //sys Dup(oldfd int) (fd int, err error)
397 //sys Faccessat(dirfd int, path string, mode uint32, flags int) (err error)
398 //sys Fchdir(fd int) (err error)
399 //sys Fchmod(fd int, mode uint32) (err error)
400 //sys Fchmodat(dirfd int, path string, mode uint32, flags int) (err error)
401 //sys Fchownat(dirfd int, path string, uid int, gid int, flags int) (err error)
402 //sys Fdatasync(fd int) (err error)
403 //sys Fsync(fd int) (err error)
405 //sysnb Getpgid(pid int) (pgid int, err error)
407 //sys Getpgrp() (pid int)
409 //sysnb Getpid() (pid int)
410 //sysnb Getppid() (ppid int)
411 //sys Getpriority(which int, who int) (prio int, err error)
412 //sysnb Getrusage(who int, rusage *Rusage) (err error)
413 //sysnb Getsid(pid int) (sid int, err error)
414 //sysnb Kill(pid int, sig Signal) (err error)
415 //sys Klogctl(typ int, buf []byte) (n int, err error) = syslog
416 //sys Mkdir(dirfd int, path string, mode uint32) (err error)
417 //sys Mkdirat(dirfd int, path string, mode uint32) (err error)
418 //sys Mkfifo(path string, mode uint32) (err error)
419 //sys Mknod(path string, mode uint32, dev int) (err error)
420 //sys Mknodat(dirfd int, path string, mode uint32, dev int) (err error)
421 //sys Nanosleep(time *Timespec, leftover *Timespec) (err error)
422 //sys Open(path string, mode int, perm uint32) (fd int, err error) = open64
423 //sys Openat(dirfd int, path string, flags int, mode uint32) (fd int, err error)
424 //sys read(fd int, p []byte) (n int, err error)
425 //sys Readlink(path string, buf []byte) (n int, err error)
426 //sys Renameat(olddirfd int, oldpath string, newdirfd int, newpath string) (err error)
427 //sys Setdomainname(p []byte) (err error)
428 //sys Sethostname(p []byte) (err error)
429 //sysnb Setpgid(pid int, pgid int) (err error)
430 //sysnb Setsid() (pid int, err error)
431 //sysnb Settimeofday(tv *Timeval) (err error)
433 //sys Setuid(uid int) (err error)
434 //sys Setgid(uid int) (err error)
436 //sys Setpriority(which int, who int, prio int) (err error)
437 //sys Statx(dirfd int, path string, flags int, mask int, stat *Statx_t) (err error)
439 //sysnb Times(tms *Tms) (ticks uintptr, err error)
440 //sysnb Umask(mask int) (oldmask int)
441 //sysnb Uname(buf *Utsname) (err error)
442 //sys Unlink(path string) (err error)
443 //sys Unlinkat(dirfd int, path string, flags int) (err error)
444 //sys Ustat(dev int, ubuf *Ustat_t) (err error)
445 //sys write(fd int, p []byte) (n int, err error)
446 //sys readlen(fd int, p *byte, np int) (n int, err error) = read
447 //sys writelen(fd int, p *byte, np int) (n int, err error) = write
449 //sys Dup2(oldfd int, newfd int) (err error)
450 //sys Fadvise(fd int, offset int64, length int64, advice int) (err error) = posix_fadvise64
451 //sys Fchown(fd int, uid int, gid int) (err error)
452 //sys fstat(fd int, stat *Stat_t) (err error)
453 //sys fstatat(dirfd int, path string, stat *Stat_t, flags int) (err error) = fstatat
454 //sys Fstatfs(fd int, buf *Statfs_t) (err error)
455 //sys Ftruncate(fd int, length int64) (err error)
456 //sysnb Getegid() (egid int)
457 //sysnb Geteuid() (euid int)
458 //sysnb Getgid() (gid int)
459 //sysnb Getuid() (uid int)
460 //sys Lchown(path string, uid int, gid int) (err error)
461 //sys Listen(s int, n int) (err error)
462 //sys lstat(path string, stat *Stat_t) (err error)
463 //sys Pause() (err error)
464 //sys Pread(fd int, p []byte, offset int64) (n int, err error) = pread64
465 //sys Pwrite(fd int, p []byte, offset int64) (n int, err error) = pwrite64
466 //sys Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, err error)
467 //sys Pselect(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timespec, sigmask *Sigset_t) (n int, err error)
468 //sysnb Setregid(rgid int, egid int) (err error)
469 //sysnb Setreuid(ruid int, euid int) (err error)
470 //sys Shutdown(fd int, how int) (err error)
471 //sys Splice(rfd int, roff *int64, wfd int, woff *int64, len int, flags int) (n int64, err error)
472 //sys stat(path string, statptr *Stat_t) (err error)
473 //sys Statfs(path string, buf *Statfs_t) (err error)
474 //sys Truncate(path string, length int64) (err error)
476 //sys bind(s int, addr unsafe.Pointer, addrlen _Socklen) (err error)
477 //sys connect(s int, addr unsafe.Pointer, addrlen _Socklen) (err error)
478 //sysnb getgroups(n int, list *_Gid_t) (nn int, err error)
479 //sysnb setgroups(n int, list *_Gid_t) (err error)
480 //sys getsockopt(s int, level int, name int, val unsafe.Pointer, vallen *_Socklen) (err error)
481 //sys setsockopt(s int, level int, name int, val unsafe.Pointer, vallen uintptr) (err error)
482 //sysnb socket(domain int, typ int, proto int) (fd int, err error)
483 //sysnb socketpair(domain int, typ int, proto int, fd *[2]int32) (err error)
484 //sysnb getpeername(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error)
485 //sysnb getsockname(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error)
486 //sys recvfrom(fd int, p []byte, flags int, from *RawSockaddrAny, fromlen *_Socklen) (n int, err error)
487 //sys sendto(s int, buf []byte, flags int, to unsafe.Pointer, addrlen _Socklen) (err error)
489 // In order to use msghdr structure with Control, Controllen, nrecvmsg and nsendmsg must be used.
490 //sys recvmsg(s int, msg *Msghdr, flags int) (n int, err error) = nrecvmsg
491 //sys sendmsg(s int, msg *Msghdr, flags int) (n int, err error) = nsendmsg
493 //sys munmap(addr uintptr, length uintptr) (err error)
495 var mapper = &mmapper{
496 active: make(map[*byte][]byte),
501 func Mmap(fd int, offset int64, length int, prot int, flags int) (data []byte, err error) {
502 return mapper.Mmap(fd, offset, length, prot, flags)
505 func Munmap(b []byte) (err error) {
506 return mapper.Munmap(b)
509 //sys Madvise(b []byte, advice int) (err error)
510 //sys Mprotect(b []byte, prot int) (err error)
511 //sys Mlock(b []byte) (err error)
512 //sys Mlockall(flags int) (err error)
513 //sys Msync(b []byte, flags int) (err error)
514 //sys Munlock(b []byte) (err error)
515 //sys Munlockall() (err error)
517 //sysnb pipe(p *[2]_C_int) (err error)
519 func Pipe(p []int) (err error) {
530 //sys poll(fds *PollFd, nfds int, timeout int) (n int, err error)
532 func Poll(fds []PollFd, timeout int) (n int, err error) {
534 return poll(nil, 0, timeout)
536 return poll(&fds[0], len(fds), timeout)
539 //sys gettimeofday(tv *Timeval, tzp *Timezone) (err error)
540 //sysnb Time(t *Time_t) (tt Time_t, err error)
541 //sys Utime(path string, buf *Utimbuf) (err error)
543 //sys Getsystemcfg(label int) (n uint64)
545 //sys umount(target string) (err error)
546 func Unmount(target string, flags int) (err error) {
548 // AIX doesn't have any flags for umount.
551 return umount(target)