github.com/binkynet/BinkyNet@v1.12.1-0.20240421190447-da4e34c20be0/proto_vendor/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  //sys	sysctl(mib []_C_int, old *byte, oldlen *uintptr, new *byte, newlen uintptr) (err error) = SYS___SYSCTL
    40  
    41  func supportsABI(ver uint32) bool {
    42  	osreldateOnce.Do(func() { osreldate, _ = SysctlUint32("kern.osreldate") })
    43  	return osreldate >= ver
    44  }
    45  
    46  // SockaddrDatalink implements the Sockaddr interface for AF_LINK type sockets.
    47  type SockaddrDatalink struct {
    48  	Len    uint8
    49  	Family uint8
    50  	Index  uint16
    51  	Type   uint8
    52  	Nlen   uint8
    53  	Alen   uint8
    54  	Slen   uint8
    55  	Data   [46]int8
    56  	raw    RawSockaddrDatalink
    57  }
    58  
    59  // Translate "kern.hostname" to []_C_int{0,1,2,3}.
    60  func nametomib(name string) (mib []_C_int, err error) {
    61  	const siz = unsafe.Sizeof(mib[0])
    62  
    63  	// NOTE(rsc): It seems strange to set the buffer to have
    64  	// size CTL_MAXNAME+2 but use only CTL_MAXNAME
    65  	// as the size. I don't know why the +2 is here, but the
    66  	// kernel uses +2 for its own implementation of this function.
    67  	// I am scared that if we don't include the +2 here, the kernel
    68  	// will silently write 2 words farther than we specify
    69  	// and we'll get memory corruption.
    70  	var buf [CTL_MAXNAME + 2]_C_int
    71  	n := uintptr(CTL_MAXNAME) * siz
    72  
    73  	p := (*byte)(unsafe.Pointer(&buf[0]))
    74  	bytes, err := ByteSliceFromString(name)
    75  	if err != nil {
    76  		return nil, err
    77  	}
    78  
    79  	// Magic sysctl: "setting" 0.3 to a string name
    80  	// lets you read back the array of integers form.
    81  	if err = sysctl([]_C_int{0, 3}, p, &n, &bytes[0], uintptr(len(name))); err != nil {
    82  		return nil, err
    83  	}
    84  	return buf[0 : n/siz], nil
    85  }
    86  
    87  func direntIno(buf []byte) (uint64, bool) {
    88  	return readInt(buf, unsafe.Offsetof(Dirent{}.Fileno), unsafe.Sizeof(Dirent{}.Fileno))
    89  }
    90  
    91  func direntReclen(buf []byte) (uint64, bool) {
    92  	return readInt(buf, unsafe.Offsetof(Dirent{}.Reclen), unsafe.Sizeof(Dirent{}.Reclen))
    93  }
    94  
    95  func direntNamlen(buf []byte) (uint64, bool) {
    96  	return readInt(buf, unsafe.Offsetof(Dirent{}.Namlen), unsafe.Sizeof(Dirent{}.Namlen))
    97  }
    98  
    99  func Pipe(p []int) (err error) {
   100  	return Pipe2(p, 0)
   101  }
   102  
   103  //sysnb	pipe2(p *[2]_C_int, flags int) (err error)
   104  
   105  func Pipe2(p []int, flags int) error {
   106  	if len(p) != 2 {
   107  		return EINVAL
   108  	}
   109  	var pp [2]_C_int
   110  	err := pipe2(&pp, flags)
   111  	p[0] = int(pp[0])
   112  	p[1] = int(pp[1])
   113  	return err
   114  }
   115  
   116  func GetsockoptIPMreqn(fd, level, opt int) (*IPMreqn, error) {
   117  	var value IPMreqn
   118  	vallen := _Socklen(SizeofIPMreqn)
   119  	errno := getsockopt(fd, level, opt, unsafe.Pointer(&value), &vallen)
   120  	return &value, errno
   121  }
   122  
   123  func SetsockoptIPMreqn(fd, level, opt int, mreq *IPMreqn) (err error) {
   124  	return setsockopt(fd, level, opt, unsafe.Pointer(mreq), unsafe.Sizeof(*mreq))
   125  }
   126  
   127  func Accept4(fd, flags int) (nfd int, sa Sockaddr, err error) {
   128  	var rsa RawSockaddrAny
   129  	var len _Socklen = SizeofSockaddrAny
   130  	nfd, err = accept4(fd, &rsa, &len, flags)
   131  	if err != nil {
   132  		return
   133  	}
   134  	if len > SizeofSockaddrAny {
   135  		panic("RawSockaddrAny too small")
   136  	}
   137  	sa, err = anyToSockaddr(fd, &rsa)
   138  	if err != nil {
   139  		Close(nfd)
   140  		nfd = 0
   141  	}
   142  	return
   143  }
   144  
   145  const ImplementsGetwd = true
   146  
   147  //sys	Getcwd(buf []byte) (n int, err error) = SYS___GETCWD
   148  
   149  func Getwd() (string, error) {
   150  	var buf [PathMax]byte
   151  	_, err := Getcwd(buf[0:])
   152  	if err != nil {
   153  		return "", err
   154  	}
   155  	n := clen(buf[:])
   156  	if n < 1 {
   157  		return "", EINVAL
   158  	}
   159  	return string(buf[:n]), nil
   160  }
   161  
   162  func Getfsstat(buf []Statfs_t, flags int) (n int, err error) {
   163  	var (
   164  		_p0          unsafe.Pointer
   165  		bufsize      uintptr
   166  		oldBuf       []statfs_freebsd11_t
   167  		needsConvert bool
   168  	)
   169  
   170  	if len(buf) > 0 {
   171  		if supportsABI(_ino64First) {
   172  			_p0 = unsafe.Pointer(&buf[0])
   173  			bufsize = unsafe.Sizeof(Statfs_t{}) * uintptr(len(buf))
   174  		} else {
   175  			n := len(buf)
   176  			oldBuf = make([]statfs_freebsd11_t, n)
   177  			_p0 = unsafe.Pointer(&oldBuf[0])
   178  			bufsize = unsafe.Sizeof(statfs_freebsd11_t{}) * uintptr(n)
   179  			needsConvert = true
   180  		}
   181  	}
   182  	var sysno uintptr = SYS_GETFSSTAT
   183  	if supportsABI(_ino64First) {
   184  		sysno = SYS_GETFSSTAT_FREEBSD12
   185  	}
   186  	r0, _, e1 := Syscall(sysno, uintptr(_p0), bufsize, uintptr(flags))
   187  	n = int(r0)
   188  	if e1 != 0 {
   189  		err = e1
   190  	}
   191  	if e1 == 0 && needsConvert {
   192  		for i := range oldBuf {
   193  			buf[i].convertFrom(&oldBuf[i])
   194  		}
   195  	}
   196  	return
   197  }
   198  
   199  func setattrlistTimes(path string, times []Timespec, flags int) error {
   200  	// used on Darwin for UtimesNano
   201  	return ENOSYS
   202  }
   203  
   204  //sys   ioctl(fd int, req uint, arg uintptr) (err error)
   205  
   206  func Uname(uname *Utsname) error {
   207  	mib := []_C_int{CTL_KERN, KERN_OSTYPE}
   208  	n := unsafe.Sizeof(uname.Sysname)
   209  	if err := sysctl(mib, &uname.Sysname[0], &n, nil, 0); err != nil {
   210  		return err
   211  	}
   212  
   213  	mib = []_C_int{CTL_KERN, KERN_HOSTNAME}
   214  	n = unsafe.Sizeof(uname.Nodename)
   215  	if err := sysctl(mib, &uname.Nodename[0], &n, nil, 0); err != nil {
   216  		return err
   217  	}
   218  
   219  	mib = []_C_int{CTL_KERN, KERN_OSRELEASE}
   220  	n = unsafe.Sizeof(uname.Release)
   221  	if err := sysctl(mib, &uname.Release[0], &n, nil, 0); err != nil {
   222  		return err
   223  	}
   224  
   225  	mib = []_C_int{CTL_KERN, KERN_VERSION}
   226  	n = unsafe.Sizeof(uname.Version)
   227  	if err := sysctl(mib, &uname.Version[0], &n, nil, 0); err != nil {
   228  		return err
   229  	}
   230  
   231  	// The version might have newlines or tabs in it, convert them to
   232  	// spaces.
   233  	for i, b := range uname.Version {
   234  		if b == '\n' || b == '\t' {
   235  			if i == len(uname.Version)-1 {
   236  				uname.Version[i] = 0
   237  			} else {
   238  				uname.Version[i] = ' '
   239  			}
   240  		}
   241  	}
   242  
   243  	mib = []_C_int{CTL_HW, HW_MACHINE}
   244  	n = unsafe.Sizeof(uname.Machine)
   245  	if err := sysctl(mib, &uname.Machine[0], &n, nil, 0); err != nil {
   246  		return err
   247  	}
   248  
   249  	return nil
   250  }
   251  
   252  func Stat(path string, st *Stat_t) (err error) {
   253  	var oldStat stat_freebsd11_t
   254  	if supportsABI(_ino64First) {
   255  		return fstatat_freebsd12(AT_FDCWD, path, st, 0)
   256  	}
   257  	err = stat(path, &oldStat)
   258  	if err != nil {
   259  		return err
   260  	}
   261  
   262  	st.convertFrom(&oldStat)
   263  	return nil
   264  }
   265  
   266  func Lstat(path string, st *Stat_t) (err error) {
   267  	var oldStat stat_freebsd11_t
   268  	if supportsABI(_ino64First) {
   269  		return fstatat_freebsd12(AT_FDCWD, path, st, AT_SYMLINK_NOFOLLOW)
   270  	}
   271  	err = lstat(path, &oldStat)
   272  	if err != nil {
   273  		return err
   274  	}
   275  
   276  	st.convertFrom(&oldStat)
   277  	return nil
   278  }
   279  
   280  func Fstat(fd int, st *Stat_t) (err error) {
   281  	var oldStat stat_freebsd11_t
   282  	if supportsABI(_ino64First) {
   283  		return fstat_freebsd12(fd, st)
   284  	}
   285  	err = fstat(fd, &oldStat)
   286  	if err != nil {
   287  		return err
   288  	}
   289  
   290  	st.convertFrom(&oldStat)
   291  	return nil
   292  }
   293  
   294  func Fstatat(fd int, path string, st *Stat_t, flags int) (err error) {
   295  	var oldStat stat_freebsd11_t
   296  	if supportsABI(_ino64First) {
   297  		return fstatat_freebsd12(fd, path, st, flags)
   298  	}
   299  	err = fstatat(fd, path, &oldStat, flags)
   300  	if err != nil {
   301  		return err
   302  	}
   303  
   304  	st.convertFrom(&oldStat)
   305  	return nil
   306  }
   307  
   308  func Statfs(path string, st *Statfs_t) (err error) {
   309  	var oldStatfs statfs_freebsd11_t
   310  	if supportsABI(_ino64First) {
   311  		return statfs_freebsd12(path, st)
   312  	}
   313  	err = statfs(path, &oldStatfs)
   314  	if err != nil {
   315  		return err
   316  	}
   317  
   318  	st.convertFrom(&oldStatfs)
   319  	return nil
   320  }
   321  
   322  func Fstatfs(fd int, st *Statfs_t) (err error) {
   323  	var oldStatfs statfs_freebsd11_t
   324  	if supportsABI(_ino64First) {
   325  		return fstatfs_freebsd12(fd, st)
   326  	}
   327  	err = fstatfs(fd, &oldStatfs)
   328  	if err != nil {
   329  		return err
   330  	}
   331  
   332  	st.convertFrom(&oldStatfs)
   333  	return nil
   334  }
   335  
   336  func Getdents(fd int, buf []byte) (n int, err error) {
   337  	return Getdirentries(fd, buf, nil)
   338  }
   339  
   340  func Getdirentries(fd int, buf []byte, basep *uintptr) (n int, err error) {
   341  	if supportsABI(_ino64First) {
   342  		if basep == nil || unsafe.Sizeof(*basep) == 8 {
   343  			return getdirentries_freebsd12(fd, buf, (*uint64)(unsafe.Pointer(basep)))
   344  		}
   345  		// The freebsd12 syscall needs a 64-bit base. On 32-bit machines
   346  		// we can't just use the basep passed in. See #32498.
   347  		var base uint64 = uint64(*basep)
   348  		n, err = getdirentries_freebsd12(fd, buf, &base)
   349  		*basep = uintptr(base)
   350  		if base>>32 != 0 {
   351  			// We can't stuff the base back into a uintptr, so any
   352  			// future calls would be suspect. Generate an error.
   353  			// EIO is allowed by getdirentries.
   354  			err = EIO
   355  		}
   356  		return
   357  	}
   358  
   359  	// The old syscall entries are smaller than the new. Use 1/4 of the original
   360  	// buffer size rounded up to DIRBLKSIZ (see /usr/src/lib/libc/sys/getdirentries.c).
   361  	oldBufLen := roundup(len(buf)/4, _dirblksiz)
   362  	oldBuf := make([]byte, oldBufLen)
   363  	n, err = getdirentries(fd, oldBuf, basep)
   364  	if err == nil && n > 0 {
   365  		n = convertFromDirents11(buf, oldBuf[:n])
   366  	}
   367  	return
   368  }
   369  
   370  func Mknod(path string, mode uint32, dev uint64) (err error) {
   371  	var oldDev int
   372  	if supportsABI(_ino64First) {
   373  		return mknodat_freebsd12(AT_FDCWD, path, mode, dev)
   374  	}
   375  	oldDev = int(dev)
   376  	return mknod(path, mode, oldDev)
   377  }
   378  
   379  func Mknodat(fd int, path string, mode uint32, dev uint64) (err error) {
   380  	var oldDev int
   381  	if supportsABI(_ino64First) {
   382  		return mknodat_freebsd12(fd, path, mode, dev)
   383  	}
   384  	oldDev = int(dev)
   385  	return mknodat(fd, path, mode, oldDev)
   386  }
   387  
   388  // round x to the nearest multiple of y, larger or equal to x.
   389  //
   390  // from /usr/include/sys/param.h Macros for counting and rounding.
   391  // #define roundup(x, y)   ((((x)+((y)-1))/(y))*(y))
   392  func roundup(x, y int) int {
   393  	return ((x + y - 1) / y) * y
   394  }
   395  
   396  func (s *Stat_t) convertFrom(old *stat_freebsd11_t) {
   397  	*s = Stat_t{
   398  		Dev:     uint64(old.Dev),
   399  		Ino:     uint64(old.Ino),
   400  		Nlink:   uint64(old.Nlink),
   401  		Mode:    old.Mode,
   402  		Uid:     old.Uid,
   403  		Gid:     old.Gid,
   404  		Rdev:    uint64(old.Rdev),
   405  		Atim:    old.Atim,
   406  		Mtim:    old.Mtim,
   407  		Ctim:    old.Ctim,
   408  		Btim:    old.Btim,
   409  		Size:    old.Size,
   410  		Blocks:  old.Blocks,
   411  		Blksize: old.Blksize,
   412  		Flags:   old.Flags,
   413  		Gen:     uint64(old.Gen),
   414  	}
   415  }
   416  
   417  func (s *Statfs_t) convertFrom(old *statfs_freebsd11_t) {
   418  	*s = Statfs_t{
   419  		Version:     _statfsVersion,
   420  		Type:        old.Type,
   421  		Flags:       old.Flags,
   422  		Bsize:       old.Bsize,
   423  		Iosize:      old.Iosize,
   424  		Blocks:      old.Blocks,
   425  		Bfree:       old.Bfree,
   426  		Bavail:      old.Bavail,
   427  		Files:       old.Files,
   428  		Ffree:       old.Ffree,
   429  		Syncwrites:  old.Syncwrites,
   430  		Asyncwrites: old.Asyncwrites,
   431  		Syncreads:   old.Syncreads,
   432  		Asyncreads:  old.Asyncreads,
   433  		// Spare
   434  		Namemax: old.Namemax,
   435  		Owner:   old.Owner,
   436  		Fsid:    old.Fsid,
   437  		// Charspare
   438  		// Fstypename
   439  		// Mntfromname
   440  		// Mntonname
   441  	}
   442  
   443  	sl := old.Fstypename[:]
   444  	n := clen(*(*[]byte)(unsafe.Pointer(&sl)))
   445  	copy(s.Fstypename[:], old.Fstypename[:n])
   446  
   447  	sl = old.Mntfromname[:]
   448  	n = clen(*(*[]byte)(unsafe.Pointer(&sl)))
   449  	copy(s.Mntfromname[:], old.Mntfromname[:n])
   450  
   451  	sl = old.Mntonname[:]
   452  	n = clen(*(*[]byte)(unsafe.Pointer(&sl)))
   453  	copy(s.Mntonname[:], old.Mntonname[:n])
   454  }
   455  
   456  func convertFromDirents11(buf []byte, old []byte) int {
   457  	const (
   458  		fixedSize    = int(unsafe.Offsetof(Dirent{}.Name))
   459  		oldFixedSize = int(unsafe.Offsetof(dirent_freebsd11{}.Name))
   460  	)
   461  
   462  	dstPos := 0
   463  	srcPos := 0
   464  	for dstPos+fixedSize < len(buf) && srcPos+oldFixedSize < len(old) {
   465  		dstDirent := (*Dirent)(unsafe.Pointer(&buf[dstPos]))
   466  		srcDirent := (*dirent_freebsd11)(unsafe.Pointer(&old[srcPos]))
   467  
   468  		reclen := roundup(fixedSize+int(srcDirent.Namlen)+1, 8)
   469  		if dstPos+reclen > len(buf) {
   470  			break
   471  		}
   472  
   473  		dstDirent.Fileno = uint64(srcDirent.Fileno)
   474  		dstDirent.Off = 0
   475  		dstDirent.Reclen = uint16(reclen)
   476  		dstDirent.Type = srcDirent.Type
   477  		dstDirent.Pad0 = 0
   478  		dstDirent.Namlen = uint16(srcDirent.Namlen)
   479  		dstDirent.Pad1 = 0
   480  
   481  		copy(dstDirent.Name[:], srcDirent.Name[:srcDirent.Namlen])
   482  		padding := buf[dstPos+fixedSize+int(dstDirent.Namlen) : dstPos+reclen]
   483  		for i := range padding {
   484  			padding[i] = 0
   485  		}
   486  
   487  		dstPos += int(dstDirent.Reclen)
   488  		srcPos += int(srcDirent.Reclen)
   489  	}
   490  
   491  	return dstPos
   492  }
   493  
   494  func Sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) {
   495  	if raceenabled {
   496  		raceReleaseMerge(unsafe.Pointer(&ioSync))
   497  	}
   498  	return sendfile(outfd, infd, offset, count)
   499  }
   500  
   501  //sys	ptrace(request int, pid int, addr uintptr, data int) (err error)
   502  
   503  func PtraceAttach(pid int) (err error) {
   504  	return ptrace(PTRACE_ATTACH, pid, 0, 0)
   505  }
   506  
   507  func PtraceCont(pid int, signal int) (err error) {
   508  	return ptrace(PTRACE_CONT, pid, 1, signal)
   509  }
   510  
   511  func PtraceDetach(pid int) (err error) {
   512  	return ptrace(PTRACE_DETACH, pid, 1, 0)
   513  }
   514  
   515  func PtraceGetFpRegs(pid int, fpregsout *FpReg) (err error) {
   516  	return ptrace(PTRACE_GETFPREGS, pid, uintptr(unsafe.Pointer(fpregsout)), 0)
   517  }
   518  
   519  func PtraceGetFsBase(pid int, fsbase *int64) (err error) {
   520  	return ptrace(PTRACE_GETFSBASE, pid, uintptr(unsafe.Pointer(fsbase)), 0)
   521  }
   522  
   523  func PtraceGetRegs(pid int, regsout *Reg) (err error) {
   524  	return ptrace(PTRACE_GETREGS, pid, uintptr(unsafe.Pointer(regsout)), 0)
   525  }
   526  
   527  func PtraceIO(req int, pid int, addr uintptr, out []byte, countin int) (count int, err error) {
   528  	ioDesc := PtraceIoDesc{Op: int32(req), Offs: (*byte)(unsafe.Pointer(addr)), Addr: (*byte)(unsafe.Pointer(&out[0])), Len: uint(countin)}
   529  	err = ptrace(PTRACE_IO, pid, uintptr(unsafe.Pointer(&ioDesc)), 0)
   530  	return int(ioDesc.Len), err
   531  }
   532  
   533  func PtraceLwpEvents(pid int, enable int) (err error) {
   534  	return ptrace(PTRACE_LWPEVENTS, pid, 0, enable)
   535  }
   536  
   537  func PtraceLwpInfo(pid int, info uintptr) (err error) {
   538  	return ptrace(PTRACE_LWPINFO, pid, info, int(unsafe.Sizeof(PtraceLwpInfoStruct{})))
   539  }
   540  
   541  func PtracePeekData(pid int, addr uintptr, out []byte) (count int, err error) {
   542  	return PtraceIO(PIOD_READ_D, pid, addr, out, SizeofLong)
   543  }
   544  
   545  func PtracePeekText(pid int, addr uintptr, out []byte) (count int, err error) {
   546  	return PtraceIO(PIOD_READ_I, pid, addr, out, SizeofLong)
   547  }
   548  
   549  func PtracePokeData(pid int, addr uintptr, data []byte) (count int, err error) {
   550  	return PtraceIO(PIOD_WRITE_D, pid, addr, data, SizeofLong)
   551  }
   552  
   553  func PtracePokeText(pid int, addr uintptr, data []byte) (count int, err error) {
   554  	return PtraceIO(PIOD_WRITE_I, pid, addr, data, SizeofLong)
   555  }
   556  
   557  func PtraceSetRegs(pid int, regs *Reg) (err error) {
   558  	return ptrace(PTRACE_SETREGS, pid, uintptr(unsafe.Pointer(regs)), 0)
   559  }
   560  
   561  func PtraceSingleStep(pid int) (err error) {
   562  	return ptrace(PTRACE_SINGLESTEP, pid, 1, 0)
   563  }
   564  
   565  /*
   566   * Exposed directly
   567   */
   568  //sys	Access(path string, mode uint32) (err error)
   569  //sys	Adjtime(delta *Timeval, olddelta *Timeval) (err error)
   570  //sys	CapEnter() (err error)
   571  //sys	capRightsGet(version int, fd int, rightsp *CapRights) (err error) = SYS___CAP_RIGHTS_GET
   572  //sys	capRightsLimit(fd int, rightsp *CapRights) (err error)
   573  //sys	Chdir(path string) (err error)
   574  //sys	Chflags(path string, flags int) (err error)
   575  //sys	Chmod(path string, mode uint32) (err error)
   576  //sys	Chown(path string, uid int, gid int) (err error)
   577  //sys	Chroot(path string) (err error)
   578  //sys	Close(fd int) (err error)
   579  //sys	Dup(fd int) (nfd int, err error)
   580  //sys	Dup2(from int, to int) (err error)
   581  //sys	Exit(code int)
   582  //sys	ExtattrGetFd(fd int, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)
   583  //sys	ExtattrSetFd(fd int, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)
   584  //sys	ExtattrDeleteFd(fd int, attrnamespace int, attrname string) (err error)
   585  //sys	ExtattrListFd(fd int, attrnamespace int, data uintptr, nbytes int) (ret int, err error)
   586  //sys	ExtattrGetFile(file string, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)
   587  //sys	ExtattrSetFile(file string, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)
   588  //sys	ExtattrDeleteFile(file string, attrnamespace int, attrname string) (err error)
   589  //sys	ExtattrListFile(file string, attrnamespace int, data uintptr, nbytes int) (ret int, err error)
   590  //sys	ExtattrGetLink(link string, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)
   591  //sys	ExtattrSetLink(link string, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)
   592  //sys	ExtattrDeleteLink(link string, attrnamespace int, attrname string) (err error)
   593  //sys	ExtattrListLink(link string, attrnamespace int, data uintptr, nbytes int) (ret int, err error)
   594  //sys	Fadvise(fd int, offset int64, length int64, advice int) (err error) = SYS_POSIX_FADVISE
   595  //sys	Faccessat(dirfd int, path string, mode uint32, flags int) (err error)
   596  //sys	Fchdir(fd int) (err error)
   597  //sys	Fchflags(fd int, flags int) (err error)
   598  //sys	Fchmod(fd int, mode uint32) (err error)
   599  //sys	Fchmodat(dirfd int, path string, mode uint32, flags int) (err error)
   600  //sys	Fchown(fd int, uid int, gid int) (err error)
   601  //sys	Fchownat(dirfd int, path string, uid int, gid int, flags int) (err error)
   602  //sys	Flock(fd int, how int) (err error)
   603  //sys	Fpathconf(fd int, name int) (val int, err error)
   604  //sys	fstat(fd int, stat *stat_freebsd11_t) (err error)
   605  //sys	fstat_freebsd12(fd int, stat *Stat_t) (err error)
   606  //sys	fstatat(fd int, path string, stat *stat_freebsd11_t, flags int) (err error)
   607  //sys	fstatat_freebsd12(fd int, path string, stat *Stat_t, flags int) (err error)
   608  //sys	fstatfs(fd int, stat *statfs_freebsd11_t) (err error)
   609  //sys	fstatfs_freebsd12(fd int, stat *Statfs_t) (err error)
   610  //sys	Fsync(fd int) (err error)
   611  //sys	Ftruncate(fd int, length int64) (err error)
   612  //sys	getdirentries(fd int, buf []byte, basep *uintptr) (n int, err error)
   613  //sys	getdirentries_freebsd12(fd int, buf []byte, basep *uint64) (n int, err error)
   614  //sys	Getdtablesize() (size int)
   615  //sysnb	Getegid() (egid int)
   616  //sysnb	Geteuid() (uid int)
   617  //sysnb	Getgid() (gid int)
   618  //sysnb	Getpgid(pid int) (pgid int, err error)
   619  //sysnb	Getpgrp() (pgrp int)
   620  //sysnb	Getpid() (pid int)
   621  //sysnb	Getppid() (ppid int)
   622  //sys	Getpriority(which int, who int) (prio int, err error)
   623  //sysnb	Getrlimit(which int, lim *Rlimit) (err error)
   624  //sysnb	Getrusage(who int, rusage *Rusage) (err error)
   625  //sysnb	Getsid(pid int) (sid int, err error)
   626  //sysnb	Gettimeofday(tv *Timeval) (err error)
   627  //sysnb	Getuid() (uid int)
   628  //sys	Issetugid() (tainted bool)
   629  //sys	Kill(pid int, signum syscall.Signal) (err error)
   630  //sys	Kqueue() (fd int, err error)
   631  //sys	Lchown(path string, uid int, gid int) (err error)
   632  //sys	Link(path string, link string) (err error)
   633  //sys	Linkat(pathfd int, path string, linkfd int, link string, flags int) (err error)
   634  //sys	Listen(s int, backlog int) (err error)
   635  //sys	lstat(path string, stat *stat_freebsd11_t) (err error)
   636  //sys	Mkdir(path string, mode uint32) (err error)
   637  //sys	Mkdirat(dirfd int, path string, mode uint32) (err error)
   638  //sys	Mkfifo(path string, mode uint32) (err error)
   639  //sys	mknod(path string, mode uint32, dev int) (err error)
   640  //sys	mknodat(fd int, path string, mode uint32, dev int) (err error)
   641  //sys	mknodat_freebsd12(fd int, path string, mode uint32, dev uint64) (err error)
   642  //sys	Nanosleep(time *Timespec, leftover *Timespec) (err error)
   643  //sys	Open(path string, mode int, perm uint32) (fd int, err error)
   644  //sys	Openat(fdat int, path string, mode int, perm uint32) (fd int, err error)
   645  //sys	Pathconf(path string, name int) (val int, err error)
   646  //sys	Pread(fd int, p []byte, offset int64) (n int, err error)
   647  //sys	Pwrite(fd int, p []byte, offset int64) (n int, err error)
   648  //sys	read(fd int, p []byte) (n int, err error)
   649  //sys	Readlink(path string, buf []byte) (n int, err error)
   650  //sys	Readlinkat(dirfd int, path string, buf []byte) (n int, err error)
   651  //sys	Rename(from string, to string) (err error)
   652  //sys	Renameat(fromfd int, from string, tofd int, to string) (err error)
   653  //sys	Revoke(path string) (err error)
   654  //sys	Rmdir(path string) (err error)
   655  //sys	Seek(fd int, offset int64, whence int) (newoffset int64, err error) = SYS_LSEEK
   656  //sys	Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, err error)
   657  //sysnb	Setegid(egid int) (err error)
   658  //sysnb	Seteuid(euid int) (err error)
   659  //sysnb	Setgid(gid int) (err error)
   660  //sys	Setlogin(name string) (err error)
   661  //sysnb	Setpgid(pid int, pgid int) (err error)
   662  //sys	Setpriority(which int, who int, prio int) (err error)
   663  //sysnb	Setregid(rgid int, egid int) (err error)
   664  //sysnb	Setreuid(ruid int, euid int) (err error)
   665  //sysnb	Setresgid(rgid int, egid int, sgid int) (err error)
   666  //sysnb	Setresuid(ruid int, euid int, suid int) (err error)
   667  //sysnb	Setrlimit(which int, lim *Rlimit) (err error)
   668  //sysnb	Setsid() (pid int, err error)
   669  //sysnb	Settimeofday(tp *Timeval) (err error)
   670  //sysnb	Setuid(uid int) (err error)
   671  //sys	stat(path string, stat *stat_freebsd11_t) (err error)
   672  //sys	statfs(path string, stat *statfs_freebsd11_t) (err error)
   673  //sys	statfs_freebsd12(path string, stat *Statfs_t) (err error)
   674  //sys	Symlink(path string, link string) (err error)
   675  //sys	Symlinkat(oldpath string, newdirfd int, newpath string) (err error)
   676  //sys	Sync() (err error)
   677  //sys	Truncate(path string, length int64) (err error)
   678  //sys	Umask(newmask int) (oldmask int)
   679  //sys	Undelete(path string) (err error)
   680  //sys	Unlink(path string) (err error)
   681  //sys	Unlinkat(dirfd int, path string, flags int) (err error)
   682  //sys	Unmount(path string, flags int) (err error)
   683  //sys	write(fd int, p []byte) (n int, err error)
   684  //sys   mmap(addr uintptr, length uintptr, prot int, flag int, fd int, pos int64) (ret uintptr, err error)
   685  //sys   munmap(addr uintptr, length uintptr) (err error)
   686  //sys	readlen(fd int, buf *byte, nbuf int) (n int, err error) = SYS_READ
   687  //sys	writelen(fd int, buf *byte, nbuf int) (n int, err error) = SYS_WRITE
   688  //sys	accept4(fd int, rsa *RawSockaddrAny, addrlen *_Socklen, flags int) (nfd int, err error)
   689  //sys	utimensat(dirfd int, path string, times *[2]Timespec, flags int) (err error)
   690  
   691  /*
   692   * Unimplemented
   693   */
   694  // Profil
   695  // Sigaction
   696  // Sigprocmask
   697  // Getlogin
   698  // Sigpending
   699  // Sigaltstack
   700  // Ioctl
   701  // Reboot
   702  // Execve
   703  // Vfork
   704  // Sbrk
   705  // Sstk
   706  // Ovadvise
   707  // Mincore
   708  // Setitimer
   709  // Swapon
   710  // Select
   711  // Sigsuspend
   712  // Readv
   713  // Writev
   714  // Nfssvc
   715  // Getfh
   716  // Quotactl
   717  // Mount
   718  // Csops
   719  // Waitid
   720  // Add_profil
   721  // Kdebug_trace
   722  // Sigreturn
   723  // Atsocket
   724  // Kqueue_from_portset_np
   725  // Kqueue_portset
   726  // Getattrlist
   727  // Setattrlist
   728  // Getdents
   729  // Getdirentriesattr
   730  // Searchfs
   731  // Delete
   732  // Copyfile
   733  // Watchevent
   734  // Waitevent
   735  // Modwatch
   736  // Fsctl
   737  // Initgroups
   738  // Posix_spawn
   739  // Nfsclnt
   740  // Fhopen
   741  // Minherit
   742  // Semsys
   743  // Msgsys
   744  // Shmsys
   745  // Semctl
   746  // Semget
   747  // Semop
   748  // Msgctl
   749  // Msgget
   750  // Msgsnd
   751  // Msgrcv
   752  // Shmat
   753  // Shmctl
   754  // Shmdt
   755  // Shmget
   756  // Shm_open
   757  // Shm_unlink
   758  // Sem_open
   759  // Sem_close
   760  // Sem_unlink
   761  // Sem_wait
   762  // Sem_trywait
   763  // Sem_post
   764  // Sem_getvalue
   765  // Sem_init
   766  // Sem_destroy
   767  // Open_extended
   768  // Umask_extended
   769  // Stat_extended
   770  // Lstat_extended
   771  // Fstat_extended
   772  // Chmod_extended
   773  // Fchmod_extended
   774  // Access_extended
   775  // Settid
   776  // Gettid
   777  // Setsgroups
   778  // Getsgroups
   779  // Setwgroups
   780  // Getwgroups
   781  // Mkfifo_extended
   782  // Mkdir_extended
   783  // Identitysvc
   784  // Shared_region_check_np
   785  // Shared_region_map_np
   786  // __pthread_mutex_destroy
   787  // __pthread_mutex_init
   788  // __pthread_mutex_lock
   789  // __pthread_mutex_trylock
   790  // __pthread_mutex_unlock
   791  // __pthread_cond_init
   792  // __pthread_cond_destroy
   793  // __pthread_cond_broadcast
   794  // __pthread_cond_signal
   795  // Setsid_with_pid
   796  // __pthread_cond_timedwait
   797  // Aio_fsync
   798  // Aio_return
   799  // Aio_suspend
   800  // Aio_cancel
   801  // Aio_error
   802  // Aio_read
   803  // Aio_write
   804  // Lio_listio
   805  // __pthread_cond_wait
   806  // Iopolicysys
   807  // __pthread_kill
   808  // __pthread_sigmask
   809  // __sigwait
   810  // __disable_threadsignal
   811  // __pthread_markcancel
   812  // __pthread_canceled
   813  // __semwait_signal
   814  // Proc_info
   815  // Stat64_extended
   816  // Lstat64_extended
   817  // Fstat64_extended
   818  // __pthread_chdir
   819  // __pthread_fchdir
   820  // Audit
   821  // Auditon
   822  // Getauid
   823  // Setauid
   824  // Getaudit
   825  // Setaudit
   826  // Getaudit_addr
   827  // Setaudit_addr
   828  // Auditctl
   829  // Bsdthread_create
   830  // Bsdthread_terminate
   831  // Stack_snapshot
   832  // Bsdthread_register
   833  // Workq_open
   834  // Workq_ops
   835  // __mac_execve
   836  // __mac_syscall
   837  // __mac_get_file
   838  // __mac_set_file
   839  // __mac_get_link
   840  // __mac_set_link
   841  // __mac_get_proc
   842  // __mac_set_proc
   843  // __mac_get_fd
   844  // __mac_set_fd
   845  // __mac_get_pid
   846  // __mac_get_lcid
   847  // __mac_get_lctx
   848  // __mac_set_lctx
   849  // Setlcid
   850  // Read_nocancel
   851  // Write_nocancel
   852  // Open_nocancel
   853  // Close_nocancel
   854  // Wait4_nocancel
   855  // Recvmsg_nocancel
   856  // Sendmsg_nocancel
   857  // Recvfrom_nocancel
   858  // Accept_nocancel
   859  // Fcntl_nocancel
   860  // Select_nocancel
   861  // Fsync_nocancel
   862  // Connect_nocancel
   863  // Sigsuspend_nocancel
   864  // Readv_nocancel
   865  // Writev_nocancel
   866  // Sendto_nocancel
   867  // Pread_nocancel
   868  // Pwrite_nocancel
   869  // Waitid_nocancel
   870  // Poll_nocancel
   871  // Msgsnd_nocancel
   872  // Msgrcv_nocancel
   873  // Sem_wait_nocancel
   874  // Aio_suspend_nocancel
   875  // __sigwait_nocancel
   876  // __semwait_signal_nocancel
   877  // __mac_mount
   878  // __mac_get_mount
   879  // __mac_getfsstat