vendor/golang.org/x/sys/unix/syscall_aix.go
changeset 251 1c52a0eeb952
parent 242 2a9ec03fe5a1
child 256 6d9efbef00a9
equal deleted inserted replaced
250:c040f992052f 251:1c52a0eeb952
    11 // Note that sometimes we use a lowercase //sys name and
    11 // Note that sometimes we use a lowercase //sys name and
    12 // wrap it in our own nicer implementation.
    12 // wrap it in our own nicer implementation.
    13 
    13 
    14 package unix
    14 package unix
    15 
    15 
    16 import (
    16 import "unsafe"
    17 	"syscall"
       
    18 	"unsafe"
       
    19 )
       
    20 
    17 
    21 /*
    18 /*
    22  * Wrapped
    19  * Wrapped
    23  */
    20  */
    24 
    21 
   228 		pp := (*RawSockaddrUnix)(unsafe.Pointer(rsa))
   225 		pp := (*RawSockaddrUnix)(unsafe.Pointer(rsa))
   229 		sa := new(SockaddrUnix)
   226 		sa := new(SockaddrUnix)
   230 
   227 
   231 		// Some versions of AIX have a bug in getsockname (see IV78655).
   228 		// Some versions of AIX have a bug in getsockname (see IV78655).
   232 		// We can't rely on sa.Len being set correctly.
   229 		// We can't rely on sa.Len being set correctly.
   233 		n := SizeofSockaddrUnix - 3 // substract leading Family, Len, terminating NUL.
   230 		n := SizeofSockaddrUnix - 3 // subtract leading Family, Len, terminating NUL.
   234 		for i := 0; i < n; i++ {
   231 		for i := 0; i < n; i++ {
   235 			if pp.Path[i] == 0 {
   232 			if pp.Path[i] == 0 {
   236 				n = i
   233 				n = i
   237 				break
   234 				break
   238 			}
   235 			}
   269 func Gettimeofday(tv *Timeval) (err error) {
   266 func Gettimeofday(tv *Timeval) (err error) {
   270 	err = gettimeofday(tv, nil)
   267 	err = gettimeofday(tv, nil)
   271 	return
   268 	return
   272 }
   269 }
   273 
   270 
       
   271 func Sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) {
       
   272 	if raceenabled {
       
   273 		raceReleaseMerge(unsafe.Pointer(&ioSync))
       
   274 	}
       
   275 	return sendfile(outfd, infd, offset, count)
       
   276 }
       
   277 
   274 // TODO
   278 // TODO
   275 func sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) {
   279 func sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) {
   276 	return -1, ENOSYS
   280 	return -1, ENOSYS
   277 }
   281 }
   278 
   282 
       
   283 func direntIno(buf []byte) (uint64, bool) {
       
   284 	return readInt(buf, unsafe.Offsetof(Dirent{}.Ino), unsafe.Sizeof(Dirent{}.Ino))
       
   285 }
       
   286 
       
   287 func direntReclen(buf []byte) (uint64, bool) {
       
   288 	return readInt(buf, unsafe.Offsetof(Dirent{}.Reclen), unsafe.Sizeof(Dirent{}.Reclen))
       
   289 }
       
   290 
       
   291 func direntNamlen(buf []byte) (uint64, bool) {
       
   292 	reclen, ok := direntReclen(buf)
       
   293 	if !ok {
       
   294 		return 0, false
       
   295 	}
       
   296 	return reclen - uint64(unsafe.Offsetof(Dirent{}.Name)), true
       
   297 }
       
   298 
   279 //sys	getdirent(fd int, buf []byte) (n int, err error)
   299 //sys	getdirent(fd int, buf []byte) (n int, err error)
   280 func ReadDirent(fd int, buf []byte) (n int, err error) {
   300 func Getdents(fd int, buf []byte) (n int, err error) {
   281 	return getdirent(fd, buf)
   301 	return getdirent(fd, buf)
   282 }
   302 }
   283 
   303 
   284 //sys	wait4(pid Pid_t, status *_C_int, options int, rusage *Rusage) (wpid Pid_t, err error)
   304 //sys	wait4(pid Pid_t, status *_C_int, options int, rusage *Rusage) (wpid Pid_t, err error)
   285 func Wait4(pid int, wstatus *WaitStatus, options int, rusage *Rusage) (wpid int, err error) {
   305 func Wait4(pid int, wstatus *WaitStatus, options int, rusage *Rusage) (wpid int, err error) {
   303  */
   323  */
   304 
   324 
   305 type WaitStatus uint32
   325 type WaitStatus uint32
   306 
   326 
   307 func (w WaitStatus) Stopped() bool { return w&0x40 != 0 }
   327 func (w WaitStatus) Stopped() bool { return w&0x40 != 0 }
   308 func (w WaitStatus) StopSignal() syscall.Signal {
   328 func (w WaitStatus) StopSignal() Signal {
   309 	if !w.Stopped() {
   329 	if !w.Stopped() {
   310 		return -1
   330 		return -1
   311 	}
   331 	}
   312 	return syscall.Signal(w>>8) & 0xFF
   332 	return Signal(w>>8) & 0xFF
   313 }
   333 }
   314 
   334 
   315 func (w WaitStatus) Exited() bool { return w&0xFF == 0 }
   335 func (w WaitStatus) Exited() bool { return w&0xFF == 0 }
   316 func (w WaitStatus) ExitStatus() int {
   336 func (w WaitStatus) ExitStatus() int {
   317 	if !w.Exited() {
   337 	if !w.Exited() {
   319 	}
   339 	}
   320 	return int((w >> 8) & 0xFF)
   340 	return int((w >> 8) & 0xFF)
   321 }
   341 }
   322 
   342 
   323 func (w WaitStatus) Signaled() bool { return w&0x40 == 0 && w&0xFF != 0 }
   343 func (w WaitStatus) Signaled() bool { return w&0x40 == 0 && w&0xFF != 0 }
   324 func (w WaitStatus) Signal() syscall.Signal {
   344 func (w WaitStatus) Signal() Signal {
   325 	if !w.Signaled() {
   345 	if !w.Signaled() {
   326 		return -1
   346 		return -1
   327 	}
   347 	}
   328 	return syscall.Signal(w>>16) & 0xFF
   348 	return Signal(w>>16) & 0xFF
   329 }
   349 }
   330 
   350 
   331 func (w WaitStatus) Continued() bool { return w&0x01000000 != 0 }
   351 func (w WaitStatus) Continued() bool { return w&0x01000000 != 0 }
   332 
   352 
   333 func (w WaitStatus) CoreDump() bool { return w&0x200 != 0 }
   353 func (w WaitStatus) CoreDump() bool { return w&0x80 == 0x80 }
   334 
   354 
   335 func (w WaitStatus) TrapCause() int { return -1 }
   355 func (w WaitStatus) TrapCause() int { return -1 }
   336 
   356 
   337 //sys	ioctl(fd int, req uint, arg uintptr) (err error)
   357 //sys	ioctl(fd int, req uint, arg uintptr) (err error)
   338 
       
   339 // ioctl itself should not be exposed directly, but additional get/set
       
   340 // functions for specific types are permissible.
       
   341 
       
   342 // IoctlSetInt performs an ioctl operation which sets an integer value
       
   343 // on fd, using the specified request number.
       
   344 func IoctlSetInt(fd int, req uint, value int) error {
       
   345 	return ioctl(fd, req, uintptr(value))
       
   346 }
       
   347 
       
   348 func ioctlSetWinsize(fd int, req uint, value *Winsize) error {
       
   349 	return ioctl(fd, req, uintptr(unsafe.Pointer(value)))
       
   350 }
       
   351 
       
   352 func ioctlSetTermios(fd int, req uint, value *Termios) error {
       
   353 	return ioctl(fd, req, uintptr(unsafe.Pointer(value)))
       
   354 }
       
   355 
       
   356 // IoctlGetInt performs an ioctl operation which gets an integer value
       
   357 // from fd, using the specified request number.
       
   358 func IoctlGetInt(fd int, req uint) (int, error) {
       
   359 	var value int
       
   360 	err := ioctl(fd, req, uintptr(unsafe.Pointer(&value)))
       
   361 	return value, err
       
   362 }
       
   363 
       
   364 func IoctlGetWinsize(fd int, req uint) (*Winsize, error) {
       
   365 	var value Winsize
       
   366 	err := ioctl(fd, req, uintptr(unsafe.Pointer(&value)))
       
   367 	return &value, err
       
   368 }
       
   369 
       
   370 func IoctlGetTermios(fd int, req uint) (*Termios, error) {
       
   371 	var value Termios
       
   372 	err := ioctl(fd, req, uintptr(unsafe.Pointer(&value)))
       
   373 	return &value, err
       
   374 }
       
   375 
   358 
   376 // fcntl must never be called with cmd=F_DUP2FD because it doesn't work on AIX
   359 // fcntl must never be called with cmd=F_DUP2FD because it doesn't work on AIX
   377 // There is no way to create a custom fcntl and to keep //sys fcntl easily,
   360 // There is no way to create a custom fcntl and to keep //sys fcntl easily,
   378 // Therefore, the programmer must call dup2 instead of fcntl in this case.
   361 // Therefore, the programmer must call dup2 instead of fcntl in this case.
   379 
   362 
   381 //sys	FcntlInt(fd uintptr, cmd int, arg int) (r int,err error) = fcntl
   364 //sys	FcntlInt(fd uintptr, cmd int, arg int) (r int,err error) = fcntl
   382 
   365 
   383 // FcntlFlock performs a fcntl syscall for the F_GETLK, F_SETLK or F_SETLKW command.
   366 // FcntlFlock performs a fcntl syscall for the F_GETLK, F_SETLK or F_SETLKW command.
   384 //sys	FcntlFlock(fd uintptr, cmd int, lk *Flock_t) (err error) = fcntl
   367 //sys	FcntlFlock(fd uintptr, cmd int, lk *Flock_t) (err error) = fcntl
   385 
   368 
   386 func Flock(fd int, how int) (err error) {
   369 //sys	fcntl(fd int, cmd int, arg int) (val int, err error)
   387 	return syscall.Flock(fd, how)
       
   388 }
       
   389 
   370 
   390 /*
   371 /*
   391  * Direct access
   372  * Direct access
   392  */
   373  */
   393 
   374 
   394 //sys	Acct(path string) (err error)
   375 //sys	Acct(path string) (err error)
   395 //sys	Chdir(path string) (err error)
   376 //sys	Chdir(path string) (err error)
   396 //sys	Chroot(path string) (err error)
   377 //sys	Chroot(path string) (err error)
   397 //sys	Close(fd int) (err error)
   378 //sys	Close(fd int) (err error)
   398 //sys	Dup(oldfd int) (fd int, err error)
   379 //sys	Dup(oldfd int) (fd int, err error)
   399 //sys	Dup3(oldfd int, newfd int, flags int) (err error)
       
   400 //sys	Exit(code int)
   380 //sys	Exit(code int)
   401 //sys	Faccessat(dirfd int, path string, mode uint32, flags int) (err error)
   381 //sys	Faccessat(dirfd int, path string, mode uint32, flags int) (err error)
   402 //sys	Fallocate(fd int, mode uint32, off int64, len int64) (err error)
       
   403 //sys	Fchdir(fd int) (err error)
   382 //sys	Fchdir(fd int) (err error)
   404 //sys	Fchmod(fd int, mode uint32) (err error)
   383 //sys	Fchmod(fd int, mode uint32) (err error)
   405 //sys	Fchmodat(dirfd int, path string, mode uint32, flags int) (err error)
   384 //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)
   385 //sys	Fchownat(dirfd int, path string, uid int, gid int, flags int) (err error)
   407 //sys	fcntl(fd int, cmd int, arg int) (val int, err error)
       
   408 //sys	Fdatasync(fd int) (err error)
   386 //sys	Fdatasync(fd int) (err error)
   409 //sys	Fsync(fd int) (err error)
   387 //sys	Fsync(fd int) (err error)
   410 // readdir_r
   388 // readdir_r
   411 //sysnb	Getpgid(pid int) (pgid int, err error)
   389 //sysnb	Getpgid(pid int) (pgid int, err error)
   412 
   390 
   415 //sysnb	Getpid() (pid int)
   393 //sysnb	Getpid() (pid int)
   416 //sysnb	Getppid() (ppid int)
   394 //sysnb	Getppid() (ppid int)
   417 //sys	Getpriority(which int, who int) (prio int, err error)
   395 //sys	Getpriority(which int, who int) (prio int, err error)
   418 //sysnb	Getrusage(who int, rusage *Rusage) (err error)
   396 //sysnb	Getrusage(who int, rusage *Rusage) (err error)
   419 //sysnb	Getsid(pid int) (sid int, err error)
   397 //sysnb	Getsid(pid int) (sid int, err error)
   420 //sysnb	Kill(pid int, sig syscall.Signal) (err error)
   398 //sysnb	Kill(pid int, sig Signal) (err error)
   421 //sys	Klogctl(typ int, buf []byte) (n int, err error) = syslog
   399 //sys	Klogctl(typ int, buf []byte) (n int, err error) = syslog
   422 //sys	Mkdir(dirfd int, path string, mode uint32) (err error)
   400 //sys	Mkdir(dirfd int, path string, mode uint32) (err error)
   423 //sys	Mkdirat(dirfd int, path string, mode uint32) (err error)
   401 //sys	Mkdirat(dirfd int, path string, mode uint32) (err error)
   424 //sys	Mkfifo(path string, mode uint32) (err error)
   402 //sys	Mkfifo(path string, mode uint32) (err error)
   425 //sys	Mknod(path string, mode uint32, dev int) (err error)
   403 //sys	Mknod(path string, mode uint32, dev int) (err error)
   427 //sys	Nanosleep(time *Timespec, leftover *Timespec) (err error)
   405 //sys	Nanosleep(time *Timespec, leftover *Timespec) (err error)
   428 //sys   Open(path string, mode int, perm uint32) (fd int, err error) = open64
   406 //sys   Open(path string, mode int, perm uint32) (fd int, err error) = open64
   429 //sys   Openat(dirfd int, path string, flags int, mode uint32) (fd int, err error)
   407 //sys   Openat(dirfd int, path string, flags int, mode uint32) (fd int, err error)
   430 //sys	read(fd int, p []byte) (n int, err error)
   408 //sys	read(fd int, p []byte) (n int, err error)
   431 //sys	Readlink(path string, buf []byte) (n int, err error)
   409 //sys	Readlink(path string, buf []byte) (n int, err error)
   432 //sys	Removexattr(path string, attr string) (err error)
       
   433 //sys	Renameat(olddirfd int, oldpath string, newdirfd int, newpath string) (err error)
   410 //sys	Renameat(olddirfd int, oldpath string, newdirfd int, newpath string) (err error)
   434 //sys	Setdomainname(p []byte) (err error)
   411 //sys	Setdomainname(p []byte) (err error)
   435 //sys	Sethostname(p []byte) (err error)
   412 //sys	Sethostname(p []byte) (err error)
   436 //sysnb	Setpgid(pid int, pgid int) (err error)
   413 //sysnb	Setpgid(pid int, pgid int) (err error)
   437 //sysnb	Setsid() (pid int, err error)
   414 //sysnb	Setsid() (pid int, err error)
   441 //sys	Setgid(uid int) (err error)
   418 //sys	Setgid(uid int) (err error)
   442 
   419 
   443 //sys	Setpriority(which int, who int, prio int) (err error)
   420 //sys	Setpriority(which int, who int, prio int) (err error)
   444 //sys	Statx(dirfd int, path string, flags int, mask int, stat *Statx_t) (err error)
   421 //sys	Statx(dirfd int, path string, flags int, mask int, stat *Statx_t) (err error)
   445 //sys	Sync()
   422 //sys	Sync()
   446 //sys	Tee(rfd int, wfd int, len int, flags int) (n int64, err error)
       
   447 //sysnb	Times(tms *Tms) (ticks uintptr, err error)
   423 //sysnb	Times(tms *Tms) (ticks uintptr, err error)
   448 //sysnb	Umask(mask int) (oldmask int)
   424 //sysnb	Umask(mask int) (oldmask int)
   449 //sysnb	Uname(buf *Utsname) (err error)
   425 //sysnb	Uname(buf *Utsname) (err error)
   450 //TODO umount
       
   451 // //sys	Unmount(target string, flags int) (err error) = umount
       
   452 //sys   Unlink(path string) (err error)
   426 //sys   Unlink(path string) (err error)
   453 //sys   Unlinkat(dirfd int, path string, flags int) (err error)
   427 //sys   Unlinkat(dirfd int, path string, flags int) (err error)
   454 //sys	Unshare(flags int) (err error)
       
   455 //sys	Ustat(dev int, ubuf *Ustat_t) (err error)
   428 //sys	Ustat(dev int, ubuf *Ustat_t) (err error)
   456 //sys	write(fd int, p []byte) (n int, err error)
   429 //sys	write(fd int, p []byte) (n int, err error)
   457 //sys	readlen(fd int, p *byte, np int) (n int, err error) = read
   430 //sys	readlen(fd int, p *byte, np int) (n int, err error) = read
   458 //sys	writelen(fd int, p *byte, np int) (n int, err error) = write
   431 //sys	writelen(fd int, p *byte, np int) (n int, err error) = write
   459 
   432 
   460 //sys	Dup2(oldfd int, newfd int) (err error)
   433 //sys	Dup2(oldfd int, newfd int) (err error)
   461 //sys	Fadvise(fd int, offset int64, length int64, advice int) (err error) = posix_fadvise64
   434 //sys	Fadvise(fd int, offset int64, length int64, advice int) (err error) = posix_fadvise64
   462 //sys	Fchown(fd int, uid int, gid int) (err error)
   435 //sys	Fchown(fd int, uid int, gid int) (err error)
   463 //sys	Fstat(fd int, stat *Stat_t) (err error)
   436 //sys	fstat(fd int, stat *Stat_t) (err error)
   464 //sys	Fstatat(dirfd int, path string, stat *Stat_t, flags int) (err error) = fstatat
   437 //sys	fstatat(dirfd int, path string, stat *Stat_t, flags int) (err error) = fstatat
   465 //sys	Fstatfs(fd int, buf *Statfs_t) (err error)
   438 //sys	Fstatfs(fd int, buf *Statfs_t) (err error)
   466 //sys	Ftruncate(fd int, length int64) (err error)
   439 //sys	Ftruncate(fd int, length int64) (err error)
   467 //sysnb	Getegid() (egid int)
   440 //sysnb	Getegid() (egid int)
   468 //sysnb	Geteuid() (euid int)
   441 //sysnb	Geteuid() (euid int)
   469 //sysnb	Getgid() (gid int)
   442 //sysnb	Getgid() (gid int)
   470 //sysnb	Getuid() (uid int)
   443 //sysnb	Getuid() (uid int)
   471 //sys	Lchown(path string, uid int, gid int) (err error)
   444 //sys	Lchown(path string, uid int, gid int) (err error)
   472 //sys	Listen(s int, n int) (err error)
   445 //sys	Listen(s int, n int) (err error)
   473 //sys	Lstat(path string, stat *Stat_t) (err error)
   446 //sys	lstat(path string, stat *Stat_t) (err error)
   474 //sys	Pause() (err error)
   447 //sys	Pause() (err error)
   475 //sys	Pread(fd int, p []byte, offset int64) (n int, err error) = pread64
   448 //sys	Pread(fd int, p []byte, offset int64) (n int, err error) = pread64
   476 //sys	Pwrite(fd int, p []byte, offset int64) (n int, err error) = pwrite64
   449 //sys	Pwrite(fd int, p []byte, offset int64) (n int, err error) = pwrite64
   477 //TODO Select
   450 //sys	Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, err error)
   478 // //sys	Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, err error)
       
   479 //sys	Pselect(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timespec, sigmask *Sigset_t) (n int, err error)
   451 //sys	Pselect(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timespec, sigmask *Sigset_t) (n int, err error)
   480 //sysnb	Setregid(rgid int, egid int) (err error)
   452 //sysnb	Setregid(rgid int, egid int) (err error)
   481 //sysnb	Setreuid(ruid int, euid int) (err error)
   453 //sysnb	Setreuid(ruid int, euid int) (err error)
   482 //sys	Shutdown(fd int, how int) (err error)
   454 //sys	Shutdown(fd int, how int) (err error)
   483 //sys	Splice(rfd int, roff *int64, wfd int, woff *int64, len int, flags int) (n int64, err error)
   455 //sys	Splice(rfd int, roff *int64, wfd int, woff *int64, len int, flags int) (n int64, err error)
   484 //sys	Stat(path string, stat *Stat_t) (err error)
   456 //sys	stat(path string, statptr *Stat_t) (err error)
   485 //sys	Statfs(path string, buf *Statfs_t) (err error)
   457 //sys	Statfs(path string, buf *Statfs_t) (err error)
   486 //sys	Truncate(path string, length int64) (err error)
   458 //sys	Truncate(path string, length int64) (err error)
   487 
   459 
   488 //sys	bind(s int, addr unsafe.Pointer, addrlen _Socklen) (err error)
   460 //sys	bind(s int, addr unsafe.Pointer, addrlen _Socklen) (err error)
   489 //sys	connect(s int, addr unsafe.Pointer, addrlen _Socklen) (err error)
   461 //sys	connect(s int, addr unsafe.Pointer, addrlen _Socklen) (err error)
   495 //sysnb	socketpair(domain int, typ int, proto int, fd *[2]int32) (err error)
   467 //sysnb	socketpair(domain int, typ int, proto int, fd *[2]int32) (err error)
   496 //sysnb	getpeername(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error)
   468 //sysnb	getpeername(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error)
   497 //sysnb	getsockname(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error)
   469 //sysnb	getsockname(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error)
   498 //sys	recvfrom(fd int, p []byte, flags int, from *RawSockaddrAny, fromlen *_Socklen) (n int, err error)
   470 //sys	recvfrom(fd int, p []byte, flags int, from *RawSockaddrAny, fromlen *_Socklen) (n int, err error)
   499 //sys	sendto(s int, buf []byte, flags int, to unsafe.Pointer, addrlen _Socklen) (err error)
   471 //sys	sendto(s int, buf []byte, flags int, to unsafe.Pointer, addrlen _Socklen) (err error)
   500 //sys	recvmsg(s int, msg *Msghdr, flags int) (n int, err error)
   472 
   501 //sys	sendmsg(s int, msg *Msghdr, flags int) (n int, err error)
   473 // In order to use msghdr structure with Control, Controllen, nrecvmsg and nsendmsg must be used.
       
   474 //sys	recvmsg(s int, msg *Msghdr, flags int) (n int, err error) = nrecvmsg
       
   475 //sys	sendmsg(s int, msg *Msghdr, flags int) (n int, err error) = nsendmsg
   502 
   476 
   503 //sys	munmap(addr uintptr, length uintptr) (err error)
   477 //sys	munmap(addr uintptr, length uintptr) (err error)
   504 
   478 
   505 var mapper = &mmapper{
   479 var mapper = &mmapper{
   506 	active: make(map[*byte][]byte),
   480 	active: make(map[*byte][]byte),
   535 	p[0] = int(pp[0])
   509 	p[0] = int(pp[0])
   536 	p[1] = int(pp[1])
   510 	p[1] = int(pp[1])
   537 	return
   511 	return
   538 }
   512 }
   539 
   513 
   540 //sysnb pipe2(p *[2]_C_int, flags int) (err error)
       
   541 
       
   542 func Pipe2(p []int, flags int) (err error) {
       
   543 	if len(p) != 2 {
       
   544 		return EINVAL
       
   545 	}
       
   546 	var pp [2]_C_int
       
   547 	err = pipe2(&pp, flags)
       
   548 	p[0] = int(pp[0])
       
   549 	p[1] = int(pp[1])
       
   550 	return
       
   551 }
       
   552 
       
   553 //sys	poll(fds *PollFd, nfds int, timeout int) (n int, err error)
   514 //sys	poll(fds *PollFd, nfds int, timeout int) (n int, err error)
   554 
   515 
   555 func Poll(fds []PollFd, timeout int) (n int, err error) {
   516 func Poll(fds []PollFd, timeout int) (n int, err error) {
   556 	if len(fds) == 0 {
   517 	if len(fds) == 0 {
   557 		return poll(nil, 0, timeout)
   518 		return poll(nil, 0, timeout)
   560 }
   521 }
   561 
   522 
   562 //sys	gettimeofday(tv *Timeval, tzp *Timezone) (err error)
   523 //sys	gettimeofday(tv *Timeval, tzp *Timezone) (err error)
   563 //sysnb	Time(t *Time_t) (tt Time_t, err error)
   524 //sysnb	Time(t *Time_t) (tt Time_t, err error)
   564 //sys	Utime(path string, buf *Utimbuf) (err error)
   525 //sys	Utime(path string, buf *Utimbuf) (err error)
       
   526 
       
   527 //sys	Getsystemcfg(label int) (n uint64)
       
   528 
       
   529 //sys	umount(target string) (err error)
       
   530 func Unmount(target string, flags int) (err error) {
       
   531 	if flags != 0 {
       
   532 		// AIX doesn't have any flags for umount.
       
   533 		return ENOSYS
       
   534 	}
       
   535 	return umount(target)
       
   536 }