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 //sys utimes(path string, times *[2]Timeval) (err error)
23 func Utimes(path string, tv []Timeval) error {
27 return utimes(path, (*[2]Timeval)(unsafe.Pointer(&tv[0])))
30 //sys utimensat(dirfd int, path string, times *[2]Timespec, flag int) (err error)
31 func UtimesNano(path string, ts []Timespec) error {
35 return utimensat(AT_FDCWD, path, (*[2]Timespec)(unsafe.Pointer(&ts[0])), 0)
38 func UtimesNanoAt(dirfd int, path string, ts []Timespec, flags int) error {
40 return utimensat(dirfd, path, nil, flags)
45 return utimensat(dirfd, path, (*[2]Timespec)(unsafe.Pointer(&ts[0])), flags)
48 func (sa *SockaddrInet4) sockaddr() (unsafe.Pointer, _Socklen, error) {
49 if sa.Port < 0 || sa.Port > 0xFFFF {
52 sa.raw.Family = AF_INET
53 p := (*[2]byte)(unsafe.Pointer(&sa.raw.Port))
54 p[0] = byte(sa.Port >> 8)
56 for i := 0; i < len(sa.Addr); i++ {
57 sa.raw.Addr[i] = sa.Addr[i]
59 return unsafe.Pointer(&sa.raw), SizeofSockaddrInet4, nil
62 func (sa *SockaddrInet6) sockaddr() (unsafe.Pointer, _Socklen, error) {
63 if sa.Port < 0 || sa.Port > 0xFFFF {
66 sa.raw.Family = AF_INET6
67 p := (*[2]byte)(unsafe.Pointer(&sa.raw.Port))
68 p[0] = byte(sa.Port >> 8)
70 sa.raw.Scope_id = sa.ZoneId
71 for i := 0; i < len(sa.Addr); i++ {
72 sa.raw.Addr[i] = sa.Addr[i]
74 return unsafe.Pointer(&sa.raw), SizeofSockaddrInet6, nil
77 func (sa *SockaddrUnix) sockaddr() (unsafe.Pointer, _Socklen, error) {
80 if n > len(sa.raw.Path) {
83 if n == len(sa.raw.Path) && name[0] != '@' {
86 sa.raw.Family = AF_UNIX
87 for i := 0; i < n; i++ {
88 sa.raw.Path[i] = uint8(name[i])
90 // length is family (uint16), name, NUL.
95 if sa.raw.Path[0] == '@' {
97 // Don't count trailing NUL for abstract address.
101 return unsafe.Pointer(&sa.raw), sl, nil
104 func Getsockname(fd int) (sa Sockaddr, err error) {
105 var rsa RawSockaddrAny
106 var len _Socklen = SizeofSockaddrAny
107 if err = getsockname(fd, &rsa, &len); err != nil {
110 return anyToSockaddr(fd, &rsa)
113 //sys getcwd(buf []byte) (err error)
115 const ImplementsGetwd = true
117 func Getwd() (ret string, err error) {
118 for len := uint64(4096); ; len *= 2 {
119 b := make([]byte, len)
126 return string(b[0:i]), nil
134 func Getcwd(buf []byte) (n int, err error) {
146 func Getgroups() (gids []int, err error) {
147 n, err := getgroups(0, nil)
155 // Sanity check group count. Max is 16 on BSD.
156 if n < 0 || n > 1000 {
160 a := make([]_Gid_t, n)
161 n, err = getgroups(n, &a[0])
165 gids = make([]int, n)
166 for i, v := range a[0:n] {
172 func Setgroups(gids []int) (err error) {
174 return setgroups(0, nil)
177 a := make([]_Gid_t, len(gids))
178 for i, v := range gids {
181 return setgroups(len(a), &a[0])
188 //sys accept(s int, rsa *RawSockaddrAny, addrlen *_Socklen) (fd int, err error)
190 func Accept(fd int) (nfd int, sa Sockaddr, err error) {
191 var rsa RawSockaddrAny
192 var len _Socklen = SizeofSockaddrAny
193 nfd, err = accept(fd, &rsa, &len)
197 sa, err = anyToSockaddr(fd, &rsa)
205 func Recvmsg(fd int, p, oob []byte, flags int) (n, oobn int, recvflags int, from Sockaddr, err error) {
206 // Recvmsg not implemented on AIX
207 sa := new(SockaddrUnix)
208 return -1, -1, -1, sa, ENOSYS
211 func Sendmsg(fd int, p, oob []byte, to Sockaddr, flags int) (err error) {
212 _, err = SendmsgN(fd, p, oob, to, flags)
216 func SendmsgN(fd int, p, oob []byte, to Sockaddr, flags int) (n int, err error) {
217 // SendmsgN not implemented on AIX
221 func anyToSockaddr(fd int, rsa *RawSockaddrAny) (Sockaddr, error) {
222 switch rsa.Addr.Family {
225 pp := (*RawSockaddrUnix)(unsafe.Pointer(rsa))
226 sa := new(SockaddrUnix)
228 // Some versions of AIX have a bug in getsockname (see IV78655).
229 // We can't rely on sa.Len being set correctly.
230 n := SizeofSockaddrUnix - 3 // subtract leading Family, Len, terminating NUL.
231 for i := 0; i < n; i++ {
238 bytes := (*[10000]byte)(unsafe.Pointer(&pp.Path[0]))[0:n]
239 sa.Name = string(bytes)
243 pp := (*RawSockaddrInet4)(unsafe.Pointer(rsa))
244 sa := new(SockaddrInet4)
245 p := (*[2]byte)(unsafe.Pointer(&pp.Port))
246 sa.Port = int(p[0])<<8 + int(p[1])
247 for i := 0; i < len(sa.Addr); i++ {
248 sa.Addr[i] = pp.Addr[i]
253 pp := (*RawSockaddrInet6)(unsafe.Pointer(rsa))
254 sa := new(SockaddrInet6)
255 p := (*[2]byte)(unsafe.Pointer(&pp.Port))
256 sa.Port = int(p[0])<<8 + int(p[1])
257 sa.ZoneId = pp.Scope_id
258 for i := 0; i < len(sa.Addr); i++ {
259 sa.Addr[i] = pp.Addr[i]
263 return nil, EAFNOSUPPORT
266 func Gettimeofday(tv *Timeval) (err error) {
267 err = gettimeofday(tv, nil)
271 func Sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) {
273 raceReleaseMerge(unsafe.Pointer(&ioSync))
275 return sendfile(outfd, infd, offset, count)
279 func sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) {
283 //sys getdirent(fd int, buf []byte) (n int, err error)
284 func ReadDirent(fd int, buf []byte) (n int, err error) {
285 return getdirent(fd, buf)
288 //sys wait4(pid Pid_t, status *_C_int, options int, rusage *Rusage) (wpid Pid_t, err error)
289 func Wait4(pid int, wstatus *WaitStatus, options int, rusage *Rusage) (wpid int, err error) {
293 // AIX wait4 may return with ERESTART errno, while the processus is still
295 for err == ERESTART {
296 r, err = wait4(Pid_t(pid), &status, options, rusage)
300 *wstatus = WaitStatus(status)
309 type WaitStatus uint32
311 func (w WaitStatus) Stopped() bool { return w&0x40 != 0 }
312 func (w WaitStatus) StopSignal() Signal {
316 return Signal(w>>8) & 0xFF
319 func (w WaitStatus) Exited() bool { return w&0xFF == 0 }
320 func (w WaitStatus) ExitStatus() int {
324 return int((w >> 8) & 0xFF)
327 func (w WaitStatus) Signaled() bool { return w&0x40 == 0 && w&0xFF != 0 }
328 func (w WaitStatus) Signal() Signal {
332 return Signal(w>>16) & 0xFF
335 func (w WaitStatus) Continued() bool { return w&0x01000000 != 0 }
337 func (w WaitStatus) CoreDump() bool { return w&0x200 != 0 }
339 func (w WaitStatus) TrapCause() int { return -1 }
341 //sys ioctl(fd int, req uint, arg uintptr) (err error)
343 // ioctl itself should not be exposed directly, but additional get/set
344 // functions for specific types are permissible.
346 // IoctlSetInt performs an ioctl operation which sets an integer value
347 // on fd, using the specified request number.
348 func IoctlSetInt(fd int, req uint, value int) error {
349 return ioctl(fd, req, uintptr(value))
352 func ioctlSetWinsize(fd int, req uint, value *Winsize) error {
353 return ioctl(fd, req, uintptr(unsafe.Pointer(value)))
356 func ioctlSetTermios(fd int, req uint, value *Termios) error {
357 return ioctl(fd, req, uintptr(unsafe.Pointer(value)))
360 // IoctlGetInt performs an ioctl operation which gets an integer value
361 // from fd, using the specified request number.
362 func IoctlGetInt(fd int, req uint) (int, error) {
364 err := ioctl(fd, req, uintptr(unsafe.Pointer(&value)))
368 func IoctlGetWinsize(fd int, req uint) (*Winsize, error) {
370 err := ioctl(fd, req, uintptr(unsafe.Pointer(&value)))
374 func IoctlGetTermios(fd int, req uint) (*Termios, error) {
376 err := ioctl(fd, req, uintptr(unsafe.Pointer(&value)))
380 // fcntl must never be called with cmd=F_DUP2FD because it doesn't work on AIX
381 // There is no way to create a custom fcntl and to keep //sys fcntl easily,
382 // Therefore, the programmer must call dup2 instead of fcntl in this case.
384 // FcntlInt performs a fcntl syscall on fd with the provided command and argument.
385 //sys FcntlInt(fd uintptr, cmd int, arg int) (r int,err error) = fcntl
387 // FcntlFlock performs a fcntl syscall for the F_GETLK, F_SETLK or F_SETLKW command.
388 //sys FcntlFlock(fd uintptr, cmd int, lk *Flock_t) (err error) = fcntl
390 //sys fcntl(fd int, cmd int, arg int) (val int, err error)
396 //sys Acct(path string) (err error)
397 //sys Chdir(path string) (err error)
398 //sys Chroot(path string) (err error)
399 //sys Close(fd int) (err error)
400 //sys Dup(oldfd int) (fd int, err error)
402 //sys Faccessat(dirfd int, path string, mode uint32, flags int) (err error)
403 //sys Fchdir(fd int) (err error)
404 //sys Fchmod(fd int, mode uint32) (err error)
405 //sys Fchmodat(dirfd int, path string, mode uint32, flags int) (err error)
406 //sys Fchownat(dirfd int, path string, uid int, gid int, flags int) (err error)
407 //sys Fdatasync(fd int) (err error)
408 //sys Fsync(fd int) (err error)
410 //sysnb Getpgid(pid int) (pgid int, err error)
412 //sys Getpgrp() (pid int)
414 //sysnb Getpid() (pid int)
415 //sysnb Getppid() (ppid int)
416 //sys Getpriority(which int, who int) (prio int, err error)
417 //sysnb Getrusage(who int, rusage *Rusage) (err error)
418 //sysnb Getsid(pid int) (sid int, err error)
419 //sysnb Kill(pid int, sig Signal) (err error)
420 //sys Klogctl(typ int, buf []byte) (n int, err error) = syslog
421 //sys Mkdir(dirfd int, path string, mode uint32) (err error)
422 //sys Mkdirat(dirfd int, path string, mode uint32) (err error)
423 //sys Mkfifo(path string, mode uint32) (err error)
424 //sys Mknod(path string, mode uint32, dev int) (err error)
425 //sys Mknodat(dirfd int, path string, mode uint32, dev int) (err error)
426 //sys Nanosleep(time *Timespec, leftover *Timespec) (err error)
427 //sys Open(path string, mode int, perm uint32) (fd int, err error) = open64
428 //sys Openat(dirfd int, path string, flags int, mode uint32) (fd int, err error)
429 //sys read(fd int, p []byte) (n int, err error)
430 //sys Readlink(path string, buf []byte) (n int, err error)
431 //sys Renameat(olddirfd int, oldpath string, newdirfd int, newpath string) (err error)
432 //sys Setdomainname(p []byte) (err error)
433 //sys Sethostname(p []byte) (err error)
434 //sysnb Setpgid(pid int, pgid int) (err error)
435 //sysnb Setsid() (pid int, err error)
436 //sysnb Settimeofday(tv *Timeval) (err error)
438 //sys Setuid(uid int) (err error)
439 //sys Setgid(uid int) (err error)
441 //sys Setpriority(which int, who int, prio int) (err error)
442 //sys Statx(dirfd int, path string, flags int, mask int, stat *Statx_t) (err error)
444 //sysnb Times(tms *Tms) (ticks uintptr, err error)
445 //sysnb Umask(mask int) (oldmask int)
446 //sysnb Uname(buf *Utsname) (err error)
448 // //sys Unmount(target string, flags int) (err error) = umount
449 //sys Unlink(path string) (err error)
450 //sys Unlinkat(dirfd int, path string, flags int) (err error)
451 //sys Ustat(dev int, ubuf *Ustat_t) (err error)
452 //sys write(fd int, p []byte) (n int, err error)
453 //sys readlen(fd int, p *byte, np int) (n int, err error) = read
454 //sys writelen(fd int, p *byte, np int) (n int, err error) = write
456 //sys Dup2(oldfd int, newfd int) (err error)
457 //sys Fadvise(fd int, offset int64, length int64, advice int) (err error) = posix_fadvise64
458 //sys Fchown(fd int, uid int, gid int) (err error)
459 //sys Fstat(fd int, stat *Stat_t) (err error)
460 //sys Fstatat(dirfd int, path string, stat *Stat_t, flags int) (err error) = fstatat
461 //sys Fstatfs(fd int, buf *Statfs_t) (err error)
462 //sys Ftruncate(fd int, length int64) (err error)
463 //sysnb Getegid() (egid int)
464 //sysnb Geteuid() (euid int)
465 //sysnb Getgid() (gid int)
466 //sysnb Getuid() (uid int)
467 //sys Lchown(path string, uid int, gid int) (err error)
468 //sys Listen(s int, n int) (err error)
469 //sys Lstat(path string, stat *Stat_t) (err error)
470 //sys Pause() (err error)
471 //sys Pread(fd int, p []byte, offset int64) (n int, err error) = pread64
472 //sys Pwrite(fd int, p []byte, offset int64) (n int, err error) = pwrite64
474 // //sys Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, err error)
475 //sys Pselect(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timespec, sigmask *Sigset_t) (n int, err error)
476 //sysnb Setregid(rgid int, egid int) (err error)
477 //sysnb Setreuid(ruid int, euid int) (err error)
478 //sys Shutdown(fd int, how int) (err error)
479 //sys Splice(rfd int, roff *int64, wfd int, woff *int64, len int, flags int) (n int64, err error)
480 //sys Stat(path string, stat *Stat_t) (err error)
481 //sys Statfs(path string, buf *Statfs_t) (err error)
482 //sys Truncate(path string, length int64) (err error)
484 //sys bind(s int, addr unsafe.Pointer, addrlen _Socklen) (err error)
485 //sys connect(s int, addr unsafe.Pointer, addrlen _Socklen) (err error)
486 //sysnb getgroups(n int, list *_Gid_t) (nn int, err error)
487 //sysnb setgroups(n int, list *_Gid_t) (err error)
488 //sys getsockopt(s int, level int, name int, val unsafe.Pointer, vallen *_Socklen) (err error)
489 //sys setsockopt(s int, level int, name int, val unsafe.Pointer, vallen uintptr) (err error)
490 //sysnb socket(domain int, typ int, proto int) (fd int, err error)
491 //sysnb socketpair(domain int, typ int, proto int, fd *[2]int32) (err error)
492 //sysnb getpeername(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error)
493 //sysnb getsockname(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error)
494 //sys recvfrom(fd int, p []byte, flags int, from *RawSockaddrAny, fromlen *_Socklen) (n int, err error)
495 //sys sendto(s int, buf []byte, flags int, to unsafe.Pointer, addrlen _Socklen) (err error)
496 //sys recvmsg(s int, msg *Msghdr, flags int) (n int, err error)
497 //sys sendmsg(s int, msg *Msghdr, flags int) (n int, err error)
499 //sys munmap(addr uintptr, length uintptr) (err error)
501 var mapper = &mmapper{
502 active: make(map[*byte][]byte),
507 func Mmap(fd int, offset int64, length int, prot int, flags int) (data []byte, err error) {
508 return mapper.Mmap(fd, offset, length, prot, flags)
511 func Munmap(b []byte) (err error) {
512 return mapper.Munmap(b)
515 //sys Madvise(b []byte, advice int) (err error)
516 //sys Mprotect(b []byte, prot int) (err error)
517 //sys Mlock(b []byte) (err error)
518 //sys Mlockall(flags int) (err error)
519 //sys Msync(b []byte, flags int) (err error)
520 //sys Munlock(b []byte) (err error)
521 //sys Munlockall() (err error)
523 //sysnb pipe(p *[2]_C_int) (err error)
525 func Pipe(p []int) (err error) {
536 //sys poll(fds *PollFd, nfds int, timeout int) (n int, err error)
538 func Poll(fds []PollFd, timeout int) (n int, err error) {
540 return poll(nil, 0, timeout)
542 return poll(&fds[0], len(fds), timeout)
545 //sys gettimeofday(tv *Timeval, tzp *Timezone) (err error)
546 //sysnb Time(t *Time_t) (tt Time_t, err error)
547 //sys Utime(path string, buf *Utimbuf) (err error)
549 //sys Getsystemcfg(label int) (n uint64)