int getdirent(int, uintptr_t, size_t);
int wait4(int, uintptr_t, int, uintptr_t);
int ioctl(int, int, uintptr_t);
int fcntl(uintptr_t, int, uintptr_t);
int fsync_range(int, int, long long, long long);
int acct(uintptr_t);
int chdir(uintptr_t);
int chroot(uintptr_t);
int close(int);
int dup(int);
void exit(int);
int faccessat(int, uintptr_t, unsigned int, int);
int fchdir(int);
int fchmod(int, unsigned int);

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)
}

// TODO: wrap
//	Acct(name nil-string) (err error)
//	Gethostuuid(uuid *byte, timeout *Timespec) (err error)
//	Ptrace(req int, pid int, addr uintptr, data int) (ret uintptr, err error)

//sys	Madvise(b []byte, behav int) (err error)

	SYS_GETLOGIN                 = 49  // { int getlogin(char *namebuf, u_int \
	SYS_SETLOGIN                 = 50  // { int setlogin(char *namebuf); }
	SYS_ACCT                     = 51  // { int acct(char *path); }
	SYS_SIGALTSTACK              = 53  // { int sigaltstack(stack_t *ss, \
	SYS_IOCTL                    = 54  // { int ioctl(int fd, u_long com, \
	SYS_REBOOT                   = 55  // { int reboot(int opt); }

	SYS_GETLOGIN                 = 49  // { int getlogin(char *namebuf, u_int \
	SYS_SETLOGIN                 = 50  // { int setlogin(char *namebuf); }
	SYS_ACCT                     = 51  // { int acct(char *path); }
	SYS_SIGALTSTACK              = 53  // { int sigaltstack(stack_t *ss, \
	SYS_IOCTL                    = 54  // { int ioctl(int fd, u_long com, \
	SYS_REBOOT                   = 55  // { int reboot(int opt); }

//sys	fsyncRange(fd int, how int, start int64, length int64) (err error) = fsync_range

func Fsync(fd int) error {
	return fsyncRange(fd, O_SYNC, 0, 0)
}

/*
 * 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_GETLOGIN                 = 49  // { int getlogin(char *namebuf, u_int \
	SYS_SETLOGIN                 = 50  // { int setlogin(char *namebuf); }
	SYS_ACCT                     = 51  // { int acct(char *path); }
	SYS_SIGALTSTACK              = 53  // { int sigaltstack(stack_t *ss, \
	SYS_IOCTL                    = 54  // { int ioctl(int fd, u_long com, \
	SYS_REBOOT                   = 55  // { int reboot(int opt); }

			secMax = v
		}
	}
	return secMax
}

// Revision returns the revision number of the input object.
func Revision(obj runtime.Object) (int64, error) {
	acc, err := meta.Accessor(obj)
	if err != nil {
		return 0, err
	}
	v, ok := acc.GetAnnotations()[RevisionAnnotation]
	if !ok {
		return 0, nil
	}
	return strconv.ParseInt(v, 10, 64)
}

	SYS___GETLOGIN           = 49  // { int|sys||__getlogin(char *namebuf, size_t namelen); }
	SYS___SETLOGIN           = 50  // { int|sys||__setlogin(const char *namebuf); }
	SYS_ACCT                 = 51  // { int|sys||acct(const char *path); }
	SYS_IOCTL                = 54  // { int|sys||ioctl(int fd, u_long com, ... void *data); }
	SYS_REVOKE               = 56  // { int|sys||revoke(const char *path); }

	SYS___GETLOGIN           = 49  // { int|sys||__getlogin(char *namebuf, size_t namelen); }
	SYS___SETLOGIN           = 50  // { int|sys||__setlogin(const char *namebuf); }
	SYS_ACCT                 = 51  // { int|sys||acct(const char *path); }
	SYS_IOCTL                = 54  // { int|sys||ioctl(int fd, u_long com, ... void *data); }
	SYS_REVOKE               = 56  // { int|sys||revoke(const char *path); }

// System specify target computer to search.
func LookupSID(system, account string) (sid *SID, domain string, accType uint32, err error) {
	if len(account) == 0 {
		return nil, "", 0, syscall.EINVAL
	}
	acc, e := UTF16PtrFromString(account)
	if e != nil {
		return nil, "", 0, e
	}
	var sys *uint16
	if len(system) > 0 {
		sys, e = UTF16PtrFromString(system)
		if e != nil {
			return nil, "", 0, e
		}