github.com/gogf/gkafka@v1.0.1-0.20190702070843-033a14468069/third/golang.org/x/sys/unix/syscall_freebsd.go (about)

     1  // Copyright 2009,2010 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.
     4  
     5  // FreeBSD system calls.
     6  // This file is compiled as ordinary Go code,
     7  // but it is also input to mksyscall,
     8  // which parses the //sys lines and generates system call stubs.
     9  // Note that sometimes we use a lowercase //sys name and wrap
    10  // it in our own nicer implementation, either here or in
    11  // syscall_bsd.go or syscall_unix.go.
    12  
    13  package unix
    14  
    15  import (
    16  	"sync"
    17  	"unsafe"
    18  )
    19  
    20  const (
    21  	SYS_FSTAT_FREEBSD12         = 551 // { int fstat(int fd, _Out_ struct stat *sb); }
    22  	SYS_FSTATAT_FREEBSD12       = 552 // { int fstatat(int fd, _In_z_ char *path, \
    23  	SYS_GETDIRENTRIES_FREEBSD12 = 554 // { ssize_t getdirentries(int fd, \
    24  	SYS_STATFS_FREEBSD12        = 555 // { int statfs(_In_z_ char *path, \
    25  	SYS_FSTATFS_FREEBSD12       = 556 // { int fstatfs(int fd, \
    26  	SYS_GETFSSTAT_FREEBSD12     = 557 // { int getfsstat( \
    27  	SYS_MKNODAT_FREEBSD12       = 559 // { int mknodat(int fd, _In_z_ char *path, \
    28  )
    29  
    30  // See https://www.freebsd.org/doc/en_US.ISO8859-1/books/porters-handbook/versions.html.
    31  var (
    32  	osreldateOnce sync.Once
    33  	osreldate     uint32
    34  )
    35  
    36  // INO64_FIRST from /usr/src/lib/libc/sys/compat-ino64.h
    37  const _ino64First = 1200031
    38  
    39  func supportsABI(ver uint32) bool {
    40  	osreldateOnce.Do(func() { osreldate, _ = SysctlUint32("kern.osreldate") })
    41  	return osreldate >= ver
    42  }
    43  
    44  // SockaddrDatalink implements the Sockaddr interface for AF_LINK type sockets.
    45  type SockaddrDatalink struct {
    46  	Len    uint8
    47  	Family uint8
    48  	Index  uint16
    49  	Type   uint8
    50  	Nlen   uint8
    51  	Alen   uint8
    52  	Slen   uint8
    53  	Data   [46]int8
    54  	raw    RawSockaddrDatalink
    55  }
    56  
    57  // Translate "kern.hostname" to []_C_int{0,1,2,3}.
    58  func nametomib(name string) (mib []_C_int, err error) {
    59  	const siz = unsafe.Sizeof(mib[0])
    60  
    61  	// NOTE(rsc): It seems strange to set the buffer to have
    62  	// size CTL_MAXNAME+2 but use only CTL_MAXNAME
    63  	// as the size. I don't know why the +2 is here, but the
    64  	// kernel uses +2 for its own implementation of this function.
    65  	// I am scared that if we don't include the +2 here, the kernel
    66  	// will silently write 2 words farther than we specify
    67  	// and we'll get memory corruption.
    68  	var buf [CTL_MAXNAME + 2]_C_int
    69  	n := uintptr(CTL_MAXNAME) * siz
    70  
    71  	p := (*byte)(unsafe.Pointer(&buf[0]))
    72  	bytes, err := ByteSliceFromString(name)
    73  	if err != nil {
    74  		return nil, err
    75  	}
    76  
    77  	// Magic sysctl: "setting" 0.3 to a string name
    78  	// lets you read back the array of integers form.
    79  	if err = sysctl([]_C_int{0, 3}, p, &n, &bytes[0], uintptr(len(name))); err != nil {
    80  		return nil, err
    81  	}
    82  	return buf[0 : n/siz], nil
    83  }
    84  
    85  func Pipe(p []int) (err error) {
    86  	return Pipe2(p, 0)
    87  }
    88  
    89  //sysnb	pipe2(p *[2]_C_int, flags int) (err error)
    90  
    91  func Pipe2(p []int, flags int) error {
    92  	if len(p) != 2 {
    93  		return EINVAL
    94  	}
    95  	var pp [2]_C_int
    96  	err := pipe2(&pp, flags)
    97  	p[0] = int(pp[0])
    98  	p[1] = int(pp[1])
    99  	return err
   100  }
   101  
   102  func GetsockoptIPMreqn(fd, level, opt int) (*IPMreqn, error) {
   103  	var value IPMreqn
   104  	vallen := _Socklen(SizeofIPMreqn)
   105  	errno := getsockopt(fd, level, opt, unsafe.Pointer(&value), &vallen)
   106  	return &value, errno
   107  }
   108  
   109  func SetsockoptIPMreqn(fd, level, opt int, mreq *IPMreqn) (err error) {
   110  	return setsockopt(fd, level, opt, unsafe.Pointer(mreq), unsafe.Sizeof(*mreq))
   111  }
   112  
   113  func Accept4(fd, flags int) (nfd int, sa Sockaddr, err error) {
   114  	var rsa RawSockaddrAny
   115  	var len _Socklen = SizeofSockaddrAny
   116  	nfd, err = accept4(fd, &rsa, &len, flags)
   117  	if err != nil {
   118  		return
   119  	}
   120  	if len > SizeofSockaddrAny {
   121  		panic("RawSockaddrAny too small")
   122  	}
   123  	sa, err = anyToSockaddr(fd, &rsa)
   124  	if err != nil {
   125  		Close(nfd)
   126  		nfd = 0
   127  	}
   128  	return
   129  }
   130  
   131  const ImplementsGetwd = true
   132  
   133  //sys	Getcwd(buf []byte) (n int, err error) = SYS___GETCWD
   134  
   135  func Getwd() (string, error) {
   136  	var buf [PathMax]byte
   137  	_, err := Getcwd(buf[0:])
   138  	if err != nil {
   139  		return "", err
   140  	}
   141  	n := clen(buf[:])
   142  	if n < 1 {
   143  		return "", EINVAL
   144  	}
   145  	return string(buf[:n]), nil
   146  }
   147  
   148  func Getfsstat(buf []Statfs_t, flags int) (n int, err error) {
   149  	var (
   150  		_p0          unsafe.Pointer
   151  		bufsize      uintptr
   152  		oldBuf       []statfs_freebsd11_t
   153  		needsConvert bool
   154  	)
   155  
   156  	if len(buf) > 0 {
   157  		if supportsABI(_ino64First) {
   158  			_p0 = unsafe.Pointer(&buf[0])
   159  			bufsize = unsafe.Sizeof(Statfs_t{}) * uintptr(len(buf))
   160  		} else {
   161  			n := len(buf)
   162  			oldBuf = make([]statfs_freebsd11_t, n)
   163  			_p0 = unsafe.Pointer(&oldBuf[0])
   164  			bufsize = unsafe.Sizeof(statfs_freebsd11_t{}) * uintptr(n)
   165  			needsConvert = true
   166  		}
   167  	}
   168  	var sysno uintptr = SYS_GETFSSTAT
   169  	if supportsABI(_ino64First) {
   170  		sysno = SYS_GETFSSTAT_FREEBSD12
   171  	}
   172  	r0, _, e1 := Syscall(sysno, uintptr(_p0), bufsize, uintptr(flags))
   173  	n = int(r0)
   174  	if e1 != 0 {
   175  		err = e1
   176  	}
   177  	if e1 == 0 && needsConvert {
   178  		for i := range oldBuf {
   179  			buf[i].convertFrom(&oldBuf[i])
   180  		}
   181  	}
   182  	return
   183  }
   184  
   185  func setattrlistTimes(path string, times []Timespec, flags int) error {
   186  	// used on Darwin for UtimesNano
   187  	return ENOSYS
   188  }
   189  
   190  //sys   ioctl(fd int, req uint, arg uintptr) (err error)
   191  
   192  // ioctl itself should not be exposed directly, but additional get/set
   193  // functions for specific types are permissible.
   194  
   195  // IoctlSetInt performs an ioctl operation which sets an integer value
   196  // on fd, using the specified request number.
   197  func IoctlSetInt(fd int, req uint, value int) error {
   198  	return ioctl(fd, req, uintptr(value))
   199  }
   200  
   201  func ioctlSetWinsize(fd int, req uint, value *Winsize) error {
   202  	return ioctl(fd, req, uintptr(unsafe.Pointer(value)))
   203  }
   204  
   205  func ioctlSetTermios(fd int, req uint, value *Termios) error {
   206  	return ioctl(fd, req, uintptr(unsafe.Pointer(value)))
   207  }
   208  
   209  // IoctlGetInt performs an ioctl operation which gets an integer value
   210  // from fd, using the specified request number.
   211  func IoctlGetInt(fd int, req uint) (int, error) {
   212  	var value int
   213  	err := ioctl(fd, req, uintptr(unsafe.Pointer(&value)))
   214  	return value, err
   215  }
   216  
   217  func IoctlGetWinsize(fd int, req uint) (*Winsize, error) {
   218  	var value Winsize
   219  	err := ioctl(fd, req, uintptr(unsafe.Pointer(&value)))
   220  	return &value, err
   221  }
   222  
   223  func IoctlGetTermios(fd int, req uint) (*Termios, error) {
   224  	var value Termios
   225  	err := ioctl(fd, req, uintptr(unsafe.Pointer(&value)))
   226  	return &value, err
   227  }
   228  
   229  func Uname(uname *Utsname) error {
   230  	mib := []_C_int{CTL_KERN, KERN_OSTYPE}
   231  	n := unsafe.Sizeof(uname.Sysname)
   232  	if err := sysctl(mib, &uname.Sysname[0], &n, nil, 0); err != nil {
   233  		return err
   234  	}
   235  
   236  	mib = []_C_int{CTL_KERN, KERN_HOSTNAME}
   237  	n = unsafe.Sizeof(uname.Nodename)
   238  	if err := sysctl(mib, &uname.Nodename[0], &n, nil, 0); err != nil {
   239  		return err
   240  	}
   241  
   242  	mib = []_C_int{CTL_KERN, KERN_OSRELEASE}
   243  	n = unsafe.Sizeof(uname.Release)
   244  	if err := sysctl(mib, &uname.Release[0], &n, nil, 0); err != nil {
   245  		return err
   246  	}
   247  
   248  	mib = []_C_int{CTL_KERN, KERN_VERSION}
   249  	n = unsafe.Sizeof(uname.Version)
   250  	if err := sysctl(mib, &uname.Version[0], &n, nil, 0); err != nil {
   251  		return err
   252  	}
   253  
   254  	// The version might have newlines or tabs in it, convert them to
   255  	// spaces.
   256  	for i, b := range uname.Version {
   257  		if b == '\n' || b == '\t' {
   258  			if i == len(uname.Version)-1 {
   259  				uname.Version[i] = 0
   260  			} else {
   261  				uname.Version[i] = ' '
   262  			}
   263  		}
   264  	}
   265  
   266  	mib = []_C_int{CTL_HW, HW_MACHINE}
   267  	n = unsafe.Sizeof(uname.Machine)
   268  	if err := sysctl(mib, &uname.Machine[0], &n, nil, 0); err != nil {
   269  		return err
   270  	}
   271  
   272  	return nil
   273  }
   274  
   275  func Stat(path string, st *Stat_t) (err error) {
   276  	var oldStat stat_freebsd11_t
   277  	if supportsABI(_ino64First) {
   278  		return fstatat_freebsd12(AT_FDCWD, path, st, 0)
   279  	}
   280  	err = stat(path, &oldStat)
   281  	if err != nil {
   282  		return err
   283  	}
   284  
   285  	st.convertFrom(&oldStat)
   286  	return nil
   287  }
   288  
   289  func Lstat(path string, st *Stat_t) (err error) {
   290  	var oldStat stat_freebsd11_t
   291  	if supportsABI(_ino64First) {
   292  		return fstatat_freebsd12(AT_FDCWD, path, st, AT_SYMLINK_NOFOLLOW)
   293  	}
   294  	err = lstat(path, &oldStat)
   295  	if err != nil {
   296  		return err
   297  	}
   298  
   299  	st.convertFrom(&oldStat)
   300  	return nil
   301  }
   302  
   303  func Fstat(fd int, st *Stat_t) (err error) {
   304  	var oldStat stat_freebsd11_t
   305  	if supportsABI(_ino64First) {
   306  		return fstat_freebsd12(fd, st)
   307  	}
   308  	err = fstat(fd, &oldStat)
   309  	if err != nil {
   310  		return err
   311  	}
   312  
   313  	st.convertFrom(&oldStat)
   314  	return nil
   315  }
   316  
   317  func Fstatat(fd int, path string, st *Stat_t, flags int) (err error) {
   318  	var oldStat stat_freebsd11_t
   319  	if supportsABI(_ino64First) {
   320  		return fstatat_freebsd12(fd, path, st, flags)
   321  	}
   322  	err = fstatat(fd, path, &oldStat, flags)
   323  	if err != nil {
   324  		return err
   325  	}
   326  
   327  	st.convertFrom(&oldStat)
   328  	return nil
   329  }
   330  
   331  func Statfs(path string, st *Statfs_t) (err error) {
   332  	var oldStatfs statfs_freebsd11_t
   333  	if supportsABI(_ino64First) {
   334  		return statfs_freebsd12(path, st)
   335  	}
   336  	err = statfs(path, &oldStatfs)
   337  	if err != nil {
   338  		return err
   339  	}
   340  
   341  	st.convertFrom(&oldStatfs)
   342  	return nil
   343  }
   344  
   345  func Fstatfs(fd int, st *Statfs_t) (err error) {
   346  	var oldStatfs statfs_freebsd11_t
   347  	if supportsABI(_ino64First) {
   348  		return fstatfs_freebsd12(fd, st)
   349  	}
   350  	err = fstatfs(fd, &oldStatfs)
   351  	if err != nil {
   352  		return err
   353  	}
   354  
   355  	st.convertFrom(&oldStatfs)
   356  	return nil
   357  }
   358  
   359  func Getdents(fd int, buf []byte) (n int, err error) {
   360  	return Getdirentries(fd, buf, nil)
   361  }
   362  
   363  func Getdirentries(fd int, buf []byte, basep *uintptr) (n int, err error) {
   364  	if supportsABI(_ino64First) {
   365  		return getdirentries_freebsd12(fd, buf, basep)
   366  	}
   367  
   368  	// The old syscall entries are smaller than the new. Use 1/4 of the original
   369  	// buffer size rounded up to DIRBLKSIZ (see /usr/src/lib/libc/sys/getdirentries.c).
   370  	oldBufLen := roundup(len(buf)/4, _dirblksiz)
   371  	oldBuf := make([]byte, oldBufLen)
   372  	n, err = getdirentries(fd, oldBuf, basep)
   373  	if err == nil && n > 0 {
   374  		n = convertFromDirents11(buf, oldBuf[:n])
   375  	}
   376  	return
   377  }
   378  
   379  func Mknod(path string, mode uint32, dev uint64) (err error) {
   380  	var oldDev int
   381  	if supportsABI(_ino64First) {
   382  		return mknodat_freebsd12(AT_FDCWD, path, mode, dev)
   383  	}
   384  	oldDev = int(dev)
   385  	return mknod(path, mode, oldDev)
   386  }
   387  
   388  func Mknodat(fd int, path string, mode uint32, dev uint64) (err error) {
   389  	var oldDev int
   390  	if supportsABI(_ino64First) {
   391  		return mknodat_freebsd12(fd, path, mode, dev)
   392  	}
   393  	oldDev = int(dev)
   394  	return mknodat(fd, path, mode, oldDev)
   395  }
   396  
   397  // round x to the nearest multiple of y, larger or equal to x.
   398  //
   399  // from /usr/include/sys/param.h Macros for counting and rounding.
   400  // #define roundup(x, y)   ((((x)+((y)-1))/(y))*(y))
   401  func roundup(x, y int) int {
   402  	return ((x + y - 1) / y) * y
   403  }
   404  
   405  func (s *Stat_t) convertFrom(old *stat_freebsd11_t) {
   406  	*s = Stat_t{
   407  		Dev:      uint64(old.Dev),
   408  		Ino:      uint64(old.Ino),
   409  		Nlink:    uint64(old.Nlink),
   410  		Mode:     old.Mode,
   411  		Uid:      old.Uid,
   412  		Gid:      old.Gid,
   413  		Rdev:     uint64(old.Rdev),
   414  		Atim:     old.Atim,
   415  		Mtim:     old.Mtim,
   416  		Ctim:     old.Ctim,
   417  		Birthtim: old.Birthtim,
   418  		Size:     old.Size,
   419  		Blocks:   old.Blocks,
   420  		Blksize:  old.Blksize,
   421  		Flags:    old.Flags,
   422  		Gen:      uint64(old.Gen),
   423  	}
   424  }
   425  
   426  func (s *Statfs_t) convertFrom(old *statfs_freebsd11_t) {
   427  	*s = Statfs_t{
   428  		Version:     _statfsVersion,
   429  		Type:        old.Type,
   430  		Flags:       old.Flags,
   431  		Bsize:       old.Bsize,
   432  		Iosize:      old.Iosize,
   433  		Blocks:      old.Blocks,
   434  		Bfree:       old.Bfree,
   435  		Bavail:      old.Bavail,
   436  		Files:       old.Files,
   437  		Ffree:       old.Ffree,
   438  		Syncwrites:  old.Syncwrites,
   439  		Asyncwrites: old.Asyncwrites,
   440  		Syncreads:   old.Syncreads,
   441  		Asyncreads:  old.Asyncreads,
   442  		// Spare
   443  		Namemax: old.Namemax,
   444  		Owner:   old.Owner,
   445  		Fsid:    old.Fsid,
   446  		// Charspare
   447  		// Fstypename
   448  		// Mntfromname
   449  		// Mntonname
   450  	}
   451  
   452  	sl := old.Fstypename[:]
   453  	n := clen(*(*[]byte)(unsafe.Pointer(&sl)))
   454  	copy(s.Fstypename[:], old.Fstypename[:n])
   455  
   456  	sl = old.Mntfromname[:]
   457  	n = clen(*(*[]byte)(unsafe.Pointer(&sl)))
   458  	copy(s.Mntfromname[:], old.Mntfromname[:n])
   459  
   460  	sl = old.Mntonname[:]
   461  	n = clen(*(*[]byte)(unsafe.Pointer(&sl)))
   462  	copy(s.Mntonname[:], old.Mntonname[:n])
   463  }
   464  
   465  func convertFromDirents11(buf []byte, old []byte) int {
   466  	const (
   467  		fixedSize    = int(unsafe.Offsetof(Dirent{}.Name))
   468  		oldFixedSize = int(unsafe.Offsetof(dirent_freebsd11{}.Name))
   469  	)
   470  
   471  	dstPos := 0
   472  	srcPos := 0
   473  	for dstPos+fixedSize < len(buf) && srcPos+oldFixedSize < len(old) {
   474  		dstDirent := (*Dirent)(unsafe.Pointer(&buf[dstPos]))
   475  		srcDirent := (*dirent_freebsd11)(unsafe.Pointer(&old[srcPos]))
   476  
   477  		reclen := roundup(fixedSize+int(srcDirent.Namlen)+1, 8)
   478  		if dstPos+reclen > len(buf) {
   479  			break
   480  		}
   481  
   482  		dstDirent.Fileno = uint64(srcDirent.Fileno)
   483  		dstDirent.Off = 0
   484  		dstDirent.Reclen = uint16(reclen)
   485  		dstDirent.Type = srcDirent.Type
   486  		dstDirent.Pad0 = 0
   487  		dstDirent.Namlen = uint16(srcDirent.Namlen)
   488  		dstDirent.Pad1 = 0
   489  
   490  		copy(dstDirent.Name[:], srcDirent.Name[:srcDirent.Namlen])
   491  		padding := buf[dstPos+fixedSize+int(dstDirent.Namlen) : dstPos+reclen]
   492  		for i := range padding {
   493  			padding[i] = 0
   494  		}
   495  
   496  		dstPos += int(dstDirent.Reclen)
   497  		srcPos += int(srcDirent.Reclen)
   498  	}
   499  
   500  	return dstPos
   501  }
   502  
   503  func Sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) {
   504  	if raceenabled {
   505  		raceReleaseMerge(unsafe.Pointer(&ioSync))
   506  	}
   507  	return sendfile(outfd, infd, offset, count)
   508  }
   509  
   510  /*
   511   * Exposed directly
   512   */
   513  //sys	Access(path string, mode uint32) (err error)
   514  //sys	Adjtime(delta *Timeval, olddelta *Timeval) (err error)
   515  //sys	CapEnter() (err error)
   516  //sys	capRightsGet(version int, fd int, rightsp *CapRights) (err error) = SYS___CAP_RIGHTS_GET
   517  //sys	capRightsLimit(fd int, rightsp *CapRights) (err error)
   518  //sys	Chdir(path string) (err error)
   519  //sys	Chflags(path string, flags int) (err error)
   520  //sys	Chmod(path string, mode uint32) (err error)
   521  //sys	Chown(path string, uid int, gid int) (err error)
   522  //sys	Chroot(path string) (err error)
   523  //sys	Close(fd int) (err error)
   524  //sys	Dup(fd int) (nfd int, err error)
   525  //sys	Dup2(from int, to int) (err error)
   526  //sys	Exit(code int)
   527  //sys	ExtattrGetFd(fd int, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)
   528  //sys	ExtattrSetFd(fd int, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)
   529  //sys	ExtattrDeleteFd(fd int, attrnamespace int, attrname string) (err error)
   530  //sys	ExtattrListFd(fd int, attrnamespace int, data uintptr, nbytes int) (ret int, err error)
   531  //sys	ExtattrGetFile(file string, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)
   532  //sys	ExtattrSetFile(file string, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)
   533  //sys	ExtattrDeleteFile(file string, attrnamespace int, attrname string) (err error)
   534  //sys	ExtattrListFile(file string, attrnamespace int, data uintptr, nbytes int) (ret int, err error)
   535  //sys	ExtattrGetLink(link string, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)
   536  //sys	ExtattrSetLink(link string, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)
   537  //sys	ExtattrDeleteLink(link string, attrnamespace int, attrname string) (err error)
   538  //sys	ExtattrListLink(link string, attrnamespace int, data uintptr, nbytes int) (ret int, err error)
   539  //sys	Fadvise(fd int, offset int64, length int64, advice int) (err error) = SYS_POSIX_FADVISE
   540  //sys	Faccessat(dirfd int, path string, mode uint32, flags int) (err error)
   541  //sys	Fchdir(fd int) (err error)
   542  //sys	Fchflags(fd int, flags int) (err error)
   543  //sys	Fchmod(fd int, mode uint32) (err error)
   544  //sys	Fchmodat(dirfd int, path string, mode uint32, flags int) (err error)
   545  //sys	Fchown(fd int, uid int, gid int) (err error)
   546  //sys	Fchownat(dirfd int, path string, uid int, gid int, flags int) (err error)
   547  //sys	Flock(fd int, how int) (err error)
   548  //sys	Fpathconf(fd int, name int) (val int, err error)
   549  //sys	fstat(fd int, stat *stat_freebsd11_t) (err error)
   550  //sys	fstat_freebsd12(fd int, stat *Stat_t) (err error)
   551  //sys	fstatat(fd int, path string, stat *stat_freebsd11_t, flags int) (err error)
   552  //sys	fstatat_freebsd12(fd int, path string, stat *Stat_t, flags int) (err error)
   553  //sys	fstatfs(fd int, stat *statfs_freebsd11_t) (err error)
   554  //sys	fstatfs_freebsd12(fd int, stat *Statfs_t) (err error)
   555  //sys	Fsync(fd int) (err error)
   556  //sys	Ftruncate(fd int, length int64) (err error)
   557  //sys	getdirentries(fd int, buf []byte, basep *uintptr) (n int, err error)
   558  //sys	getdirentries_freebsd12(fd int, buf []byte, basep *uintptr) (n int, err error)
   559  //sys	Getdtablesize() (size int)
   560  //sysnb	Getegid() (egid int)
   561  //sysnb	Geteuid() (uid int)
   562  //sysnb	Getgid() (gid int)
   563  //sysnb	Getpgid(pid int) (pgid int, err error)
   564  //sysnb	Getpgrp() (pgrp int)
   565  //sysnb	Getpid() (pid int)
   566  //sysnb	Getppid() (ppid int)
   567  //sys	Getpriority(which int, who int) (prio int, err error)
   568  //sysnb	Getrlimit(which int, lim *Rlimit) (err error)
   569  //sysnb	Getrusage(who int, rusage *Rusage) (err error)
   570  //sysnb	Getsid(pid int) (sid int, err error)
   571  //sysnb	Gettimeofday(tv *Timeval) (err error)
   572  //sysnb	Getuid() (uid int)
   573  //sys	Issetugid() (tainted bool)
   574  //sys	Kill(pid int, signum syscall.Signal) (err error)
   575  //sys	Kqueue() (fd int, err error)
   576  //sys	Lchown(path string, uid int, gid int) (err error)
   577  //sys	Link(path string, link string) (err error)
   578  //sys	Linkat(pathfd int, path string, linkfd int, link string, flags int) (err error)
   579  //sys	Listen(s int, backlog int) (err error)
   580  //sys	lstat(path string, stat *stat_freebsd11_t) (err error)
   581  //sys	Mkdir(path string, mode uint32) (err error)
   582  //sys	Mkdirat(dirfd int, path string, mode uint32) (err error)
   583  //sys	Mkfifo(path string, mode uint32) (err error)
   584  //sys	mknod(path string, mode uint32, dev int) (err error)
   585  //sys	mknodat(fd int, path string, mode uint32, dev int) (err error)
   586  //sys	mknodat_freebsd12(fd int, path string, mode uint32, dev uint64) (err error)
   587  //sys	Nanosleep(time *Timespec, leftover *Timespec) (err error)
   588  //sys	Open(path string, mode int, perm uint32) (fd int, err error)
   589  //sys	Openat(fdat int, path string, mode int, perm uint32) (fd int, err error)
   590  //sys	Pathconf(path string, name int) (val int, err error)
   591  //sys	Pread(fd int, p []byte, offset int64) (n int, err error)
   592  //sys	Pwrite(fd int, p []byte, offset int64) (n int, err error)
   593  //sys	read(fd int, p []byte) (n int, err error)
   594  //sys	Readlink(path string, buf []byte) (n int, err error)
   595  //sys	Readlinkat(dirfd int, path string, buf []byte) (n int, err error)
   596  //sys	Rename(from string, to string) (err error)
   597  //sys	Renameat(fromfd int, from string, tofd int, to string) (err error)
   598  //sys	Revoke(path string) (err error)
   599  //sys	Rmdir(path string) (err error)
   600  //sys	Seek(fd int, offset int64, whence int) (newoffset int64, err error) = SYS_LSEEK
   601  //sys	Select(n int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (err error)
   602  //sysnb	Setegid(egid int) (err error)
   603  //sysnb	Seteuid(euid int) (err error)
   604  //sysnb	Setgid(gid int) (err error)
   605  //sys	Setlogin(name string) (err error)
   606  //sysnb	Setpgid(pid int, pgid int) (err error)
   607  //sys	Setpriority(which int, who int, prio int) (err error)
   608  //sysnb	Setregid(rgid int, egid int) (err error)
   609  //sysnb	Setreuid(ruid int, euid int) (err error)
   610  //sysnb	Setresgid(rgid int, egid int, sgid int) (err error)
   611  //sysnb	Setresuid(ruid int, euid int, suid int) (err error)
   612  //sysnb	Setrlimit(which int, lim *Rlimit) (err error)
   613  //sysnb	Setsid() (pid int, err error)
   614  //sysnb	Settimeofday(tp *Timeval) (err error)
   615  //sysnb	Setuid(uid int) (err error)
   616  //sys	stat(path string, stat *stat_freebsd11_t) (err error)
   617  //sys	statfs(path string, stat *statfs_freebsd11_t) (err error)
   618  //sys	statfs_freebsd12(path string, stat *Statfs_t) (err error)
   619  //sys	Symlink(path string, link string) (err error)
   620  //sys	Symlinkat(oldpath string, newdirfd int, newpath string) (err error)
   621  //sys	Sync() (err error)
   622  //sys	Truncate(path string, length int64) (err error)
   623  //sys	Umask(newmask int) (oldmask int)
   624  //sys	Undelete(path string) (err error)
   625  //sys	Unlink(path string) (err error)
   626  //sys	Unlinkat(dirfd int, path string, flags int) (err error)
   627  //sys	Unmount(path string, flags int) (err error)
   628  //sys	write(fd int, p []byte) (n int, err error)
   629  //sys   mmap(addr uintptr, length uintptr, prot int, flag int, fd int, pos int64) (ret uintptr, err error)
   630  //sys   munmap(addr uintptr, length uintptr) (err error)
   631  //sys	readlen(fd int, buf *byte, nbuf int) (n int, err error) = SYS_READ
   632  //sys	writelen(fd int, buf *byte, nbuf int) (n int, err error) = SYS_WRITE
   633  //sys	accept4(fd int, rsa *RawSockaddrAny, addrlen *_Socklen, flags int) (nfd int, err error)
   634  //sys	utimensat(dirfd int, path string, times *[2]Timespec, flags int) (err error)
   635  
   636  /*
   637   * Unimplemented
   638   */
   639  // Profil
   640  // Sigaction
   641  // Sigprocmask
   642  // Getlogin
   643  // Sigpending
   644  // Sigaltstack
   645  // Ioctl
   646  // Reboot
   647  // Execve
   648  // Vfork
   649  // Sbrk
   650  // Sstk
   651  // Ovadvise
   652  // Mincore
   653  // Setitimer
   654  // Swapon
   655  // Select
   656  // Sigsuspend
   657  // Readv
   658  // Writev
   659  // Nfssvc
   660  // Getfh
   661  // Quotactl
   662  // Mount
   663  // Csops
   664  // Waitid
   665  // Add_profil
   666  // Kdebug_trace
   667  // Sigreturn
   668  // Atsocket
   669  // Kqueue_from_portset_np
   670  // Kqueue_portset
   671  // Getattrlist
   672  // Setattrlist
   673  // Getdents
   674  // Getdirentriesattr
   675  // Searchfs
   676  // Delete
   677  // Copyfile
   678  // Watchevent
   679  // Waitevent
   680  // Modwatch
   681  // Fsctl
   682  // Initgroups
   683  // Posix_spawn
   684  // Nfsclnt
   685  // Fhopen
   686  // Minherit
   687  // Semsys
   688  // Msgsys
   689  // Shmsys
   690  // Semctl
   691  // Semget
   692  // Semop
   693  // Msgctl
   694  // Msgget
   695  // Msgsnd
   696  // Msgrcv
   697  // Shmat
   698  // Shmctl
   699  // Shmdt
   700  // Shmget
   701  // Shm_open
   702  // Shm_unlink
   703  // Sem_open
   704  // Sem_close
   705  // Sem_unlink
   706  // Sem_wait
   707  // Sem_trywait
   708  // Sem_post
   709  // Sem_getvalue
   710  // Sem_init
   711  // Sem_destroy
   712  // Open_extended
   713  // Umask_extended
   714  // Stat_extended
   715  // Lstat_extended
   716  // Fstat_extended
   717  // Chmod_extended
   718  // Fchmod_extended
   719  // Access_extended
   720  // Settid
   721  // Gettid
   722  // Setsgroups
   723  // Getsgroups
   724  // Setwgroups
   725  // Getwgroups
   726  // Mkfifo_extended
   727  // Mkdir_extended
   728  // Identitysvc
   729  // Shared_region_check_np
   730  // Shared_region_map_np
   731  // __pthread_mutex_destroy
   732  // __pthread_mutex_init
   733  // __pthread_mutex_lock
   734  // __pthread_mutex_trylock
   735  // __pthread_mutex_unlock
   736  // __pthread_cond_init
   737  // __pthread_cond_destroy
   738  // __pthread_cond_broadcast
   739  // __pthread_cond_signal
   740  // Setsid_with_pid
   741  // __pthread_cond_timedwait
   742  // Aio_fsync
   743  // Aio_return
   744  // Aio_suspend
   745  // Aio_cancel
   746  // Aio_error
   747  // Aio_read
   748  // Aio_write
   749  // Lio_listio
   750  // __pthread_cond_wait
   751  // Iopolicysys
   752  // __pthread_kill
   753  // __pthread_sigmask
   754  // __sigwait
   755  // __disable_threadsignal
   756  // __pthread_markcancel
   757  // __pthread_canceled
   758  // __semwait_signal
   759  // Proc_info
   760  // Stat64_extended
   761  // Lstat64_extended
   762  // Fstat64_extended
   763  // __pthread_chdir
   764  // __pthread_fchdir
   765  // Audit
   766  // Auditon
   767  // Getauid
   768  // Setauid
   769  // Getaudit
   770  // Setaudit
   771  // Getaudit_addr
   772  // Setaudit_addr
   773  // Auditctl
   774  // Bsdthread_create
   775  // Bsdthread_terminate
   776  // Stack_snapshot
   777  // Bsdthread_register
   778  // Workq_open
   779  // Workq_ops
   780  // __mac_execve
   781  // __mac_syscall
   782  // __mac_get_file
   783  // __mac_set_file
   784  // __mac_get_link
   785  // __mac_set_link
   786  // __mac_get_proc
   787  // __mac_set_proc
   788  // __mac_get_fd
   789  // __mac_set_fd
   790  // __mac_get_pid
   791  // __mac_get_lcid
   792  // __mac_get_lctx
   793  // __mac_set_lctx
   794  // Setlcid
   795  // Read_nocancel
   796  // Write_nocancel
   797  // Open_nocancel
   798  // Close_nocancel
   799  // Wait4_nocancel
   800  // Recvmsg_nocancel
   801  // Sendmsg_nocancel
   802  // Recvfrom_nocancel
   803  // Accept_nocancel
   804  // Fcntl_nocancel
   805  // Select_nocancel
   806  // Fsync_nocancel
   807  // Connect_nocancel
   808  // Sigsuspend_nocancel
   809  // Readv_nocancel
   810  // Writev_nocancel
   811  // Sendto_nocancel
   812  // Pread_nocancel
   813  // Pwrite_nocancel
   814  // Waitid_nocancel
   815  // Poll_nocancel
   816  // Msgsnd_nocancel
   817  // Msgrcv_nocancel
   818  // Sem_wait_nocancel
   819  // Aio_suspend_nocancel
   820  // __sigwait_nocancel
   821  // __semwait_signal_nocancel
   822  // __mac_mount
   823  // __mac_get_mount
   824  // __mac_getfsstat