Source file src/cmd/vendor/golang.org/x/sys/unix/syscall_darwin.go

Documentation: cmd/vendor/golang.org/x/sys/unix

     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  // Darwin 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  	"fmt"
    17  	"syscall"
    18  	"unsafe"
    19  )
    20  
    21  //sys	closedir(dir uintptr) (err error)
    22  //sys	readdir_r(dir uintptr, entry *Dirent, result **Dirent) (res Errno)
    23  
    24  func fdopendir(fd int) (dir uintptr, err error) {
    25  	r0, _, e1 := syscall_syscallPtr(libc_fdopendir_trampoline_addr, uintptr(fd), 0, 0)
    26  	dir = uintptr(r0)
    27  	if e1 != 0 {
    28  		err = errnoErr(e1)
    29  	}
    30  	return
    31  }
    32  
    33  var libc_fdopendir_trampoline_addr uintptr
    34  
    35  //go:cgo_import_dynamic libc_fdopendir fdopendir "/usr/lib/libSystem.B.dylib"
    36  
    37  func Getdirentries(fd int, buf []byte, basep *uintptr) (n int, err error) {
    38  	// Simulate Getdirentries using fdopendir/readdir_r/closedir.
    39  	// We store the number of entries to skip in the seek
    40  	// offset of fd. See issue #31368.
    41  	// It's not the full required semantics, but should handle the case
    42  	// of calling Getdirentries or ReadDirent repeatedly.
    43  	// It won't handle assigning the results of lseek to *basep, or handle
    44  	// the directory being edited underfoot.
    45  	skip, err := Seek(fd, 0, 1 /* SEEK_CUR */)
    46  	if err != nil {
    47  		return 0, err
    48  	}
    49  
    50  	// We need to duplicate the incoming file descriptor
    51  	// because the caller expects to retain control of it, but
    52  	// fdopendir expects to take control of its argument.
    53  	// Just Dup'ing the file descriptor is not enough, as the
    54  	// result shares underlying state. Use Openat to make a really
    55  	// new file descriptor referring to the same directory.
    56  	fd2, err := Openat(fd, ".", O_RDONLY, 0)
    57  	if err != nil {
    58  		return 0, err
    59  	}
    60  	d, err := fdopendir(fd2)
    61  	if err != nil {
    62  		Close(fd2)
    63  		return 0, err
    64  	}
    65  	defer closedir(d)
    66  
    67  	var cnt int64
    68  	for {
    69  		var entry Dirent
    70  		var entryp *Dirent
    71  		e := readdir_r(d, &entry, &entryp)
    72  		if e != 0 {
    73  			return n, errnoErr(e)
    74  		}
    75  		if entryp == nil {
    76  			break
    77  		}
    78  		if skip > 0 {
    79  			skip--
    80  			cnt++
    81  			continue
    82  		}
    83  
    84  		reclen := int(entry.Reclen)
    85  		if reclen > len(buf) {
    86  			// Not enough room. Return for now.
    87  			// The counter will let us know where we should start up again.
    88  			// Note: this strategy for suspending in the middle and
    89  			// restarting is O(n^2) in the length of the directory. Oh well.
    90  			break
    91  		}
    92  
    93  		// Copy entry into return buffer.
    94  		s := unsafe.Slice((*byte)(unsafe.Pointer(&entry)), reclen)
    95  		copy(buf, s)
    96  
    97  		buf = buf[reclen:]
    98  		n += reclen
    99  		cnt++
   100  	}
   101  	// Set the seek offset of the input fd to record
   102  	// how many files we've already returned.
   103  	_, err = Seek(fd, cnt, 0 /* SEEK_SET */)
   104  	if err != nil {
   105  		return n, err
   106  	}
   107  
   108  	return n, nil
   109  }
   110  
   111  // SockaddrDatalink implements the Sockaddr interface for AF_LINK type sockets.
   112  type SockaddrDatalink struct {
   113  	Len    uint8
   114  	Family uint8
   115  	Index  uint16
   116  	Type   uint8
   117  	Nlen   uint8
   118  	Alen   uint8
   119  	Slen   uint8
   120  	Data   [12]int8
   121  	raw    RawSockaddrDatalink
   122  }
   123  
   124  // SockaddrCtl implements the Sockaddr interface for AF_SYSTEM type sockets.
   125  type SockaddrCtl struct {
   126  	ID   uint32
   127  	Unit uint32
   128  	raw  RawSockaddrCtl
   129  }
   130  
   131  func (sa *SockaddrCtl) sockaddr() (unsafe.Pointer, _Socklen, error) {
   132  	sa.raw.Sc_len = SizeofSockaddrCtl
   133  	sa.raw.Sc_family = AF_SYSTEM
   134  	sa.raw.Ss_sysaddr = AF_SYS_CONTROL
   135  	sa.raw.Sc_id = sa.ID
   136  	sa.raw.Sc_unit = sa.Unit
   137  	return unsafe.Pointer(&sa.raw), SizeofSockaddrCtl, nil
   138  }
   139  
   140  // SockaddrVM implements the Sockaddr interface for AF_VSOCK type sockets.
   141  // SockaddrVM provides access to Darwin VM sockets: a mechanism that enables
   142  // bidirectional communication between a hypervisor and its guest virtual
   143  // machines.
   144  type SockaddrVM struct {
   145  	// CID and Port specify a context ID and port address for a VM socket.
   146  	// Guests have a unique CID, and hosts may have a well-known CID of:
   147  	//  - VMADDR_CID_HYPERVISOR: refers to the hypervisor process.
   148  	//  - VMADDR_CID_LOCAL: refers to local communication (loopback).
   149  	//  - VMADDR_CID_HOST: refers to other processes on the host.
   150  	CID  uint32
   151  	Port uint32
   152  	raw  RawSockaddrVM
   153  }
   154  
   155  func (sa *SockaddrVM) sockaddr() (unsafe.Pointer, _Socklen, error) {
   156  	sa.raw.Len = SizeofSockaddrVM
   157  	sa.raw.Family = AF_VSOCK
   158  	sa.raw.Port = sa.Port
   159  	sa.raw.Cid = sa.CID
   160  
   161  	return unsafe.Pointer(&sa.raw), SizeofSockaddrVM, nil
   162  }
   163  
   164  func anyToSockaddrGOOS(fd int, rsa *RawSockaddrAny) (Sockaddr, error) {
   165  	switch rsa.Addr.Family {
   166  	case AF_SYSTEM:
   167  		pp := (*RawSockaddrCtl)(unsafe.Pointer(rsa))
   168  		if pp.Ss_sysaddr == AF_SYS_CONTROL {
   169  			sa := new(SockaddrCtl)
   170  			sa.ID = pp.Sc_id
   171  			sa.Unit = pp.Sc_unit
   172  			return sa, nil
   173  		}
   174  	case AF_VSOCK:
   175  		pp := (*RawSockaddrVM)(unsafe.Pointer(rsa))
   176  		sa := &SockaddrVM{
   177  			CID:  pp.Cid,
   178  			Port: pp.Port,
   179  		}
   180  		return sa, nil
   181  	}
   182  	return nil, EAFNOSUPPORT
   183  }
   184  
   185  // Some external packages rely on SYS___SYSCTL being defined to implement their
   186  // own sysctl wrappers. Provide it here, even though direct syscalls are no
   187  // longer supported on darwin.
   188  const SYS___SYSCTL = SYS_SYSCTL
   189  
   190  // Translate "kern.hostname" to []_C_int{0,1,2,3}.
   191  func nametomib(name string) (mib []_C_int, err error) {
   192  	const siz = unsafe.Sizeof(mib[0])
   193  
   194  	// NOTE(rsc): It seems strange to set the buffer to have
   195  	// size CTL_MAXNAME+2 but use only CTL_MAXNAME
   196  	// as the size. I don't know why the +2 is here, but the
   197  	// kernel uses +2 for its own implementation of this function.
   198  	// I am scared that if we don't include the +2 here, the kernel
   199  	// will silently write 2 words farther than we specify
   200  	// and we'll get memory corruption.
   201  	var buf [CTL_MAXNAME + 2]_C_int
   202  	n := uintptr(CTL_MAXNAME) * siz
   203  
   204  	p := (*byte)(unsafe.Pointer(&buf[0]))
   205  	bytes, err := ByteSliceFromString(name)
   206  	if err != nil {
   207  		return nil, err
   208  	}
   209  
   210  	// Magic sysctl: "setting" 0.3 to a string name
   211  	// lets you read back the array of integers form.
   212  	if err = sysctl([]_C_int{0, 3}, p, &n, &bytes[0], uintptr(len(name))); err != nil {
   213  		return nil, err
   214  	}
   215  	return buf[0 : n/siz], nil
   216  }
   217  
   218  func direntIno(buf []byte) (uint64, bool) {
   219  	return readInt(buf, unsafe.Offsetof(Dirent{}.Ino), unsafe.Sizeof(Dirent{}.Ino))
   220  }
   221  
   222  func direntReclen(buf []byte) (uint64, bool) {
   223  	return readInt(buf, unsafe.Offsetof(Dirent{}.Reclen), unsafe.Sizeof(Dirent{}.Reclen))
   224  }
   225  
   226  func direntNamlen(buf []byte) (uint64, bool) {
   227  	return readInt(buf, unsafe.Offsetof(Dirent{}.Namlen), unsafe.Sizeof(Dirent{}.Namlen))
   228  }
   229  
   230  func PtraceAttach(pid int) (err error) { return ptrace(PT_ATTACH, pid, 0, 0) }
   231  func PtraceDetach(pid int) (err error) { return ptrace(PT_DETACH, pid, 0, 0) }
   232  func PtraceDenyAttach() (err error)    { return ptrace(PT_DENY_ATTACH, 0, 0, 0) }
   233  
   234  //sysnb	pipe(p *[2]int32) (err error)
   235  
   236  func Pipe(p []int) (err error) {
   237  	if len(p) != 2 {
   238  		return EINVAL
   239  	}
   240  	var x [2]int32
   241  	err = pipe(&x)
   242  	if err == nil {
   243  		p[0] = int(x[0])
   244  		p[1] = int(x[1])
   245  	}
   246  	return
   247  }
   248  
   249  func Getfsstat(buf []Statfs_t, flags int) (n int, err error) {
   250  	var _p0 unsafe.Pointer
   251  	var bufsize uintptr
   252  	if len(buf) > 0 {
   253  		_p0 = unsafe.Pointer(&buf[0])
   254  		bufsize = unsafe.Sizeof(Statfs_t{}) * uintptr(len(buf))
   255  	}
   256  	return getfsstat(_p0, bufsize, flags)
   257  }
   258  
   259  func xattrPointer(dest []byte) *byte {
   260  	// It's only when dest is set to NULL that the OS X implementations of
   261  	// getxattr() and listxattr() return the current sizes of the named attributes.
   262  	// An empty byte array is not sufficient. To maintain the same behaviour as the
   263  	// linux implementation, we wrap around the system calls and pass in NULL when
   264  	// dest is empty.
   265  	var destp *byte
   266  	if len(dest) > 0 {
   267  		destp = &dest[0]
   268  	}
   269  	return destp
   270  }
   271  
   272  //sys	getxattr(path string, attr string, dest *byte, size int, position uint32, options int) (sz int, err error)
   273  
   274  func Getxattr(path string, attr string, dest []byte) (sz int, err error) {
   275  	return getxattr(path, attr, xattrPointer(dest), len(dest), 0, 0)
   276  }
   277  
   278  func Lgetxattr(link string, attr string, dest []byte) (sz int, err error) {
   279  	return getxattr(link, attr, xattrPointer(dest), len(dest), 0, XATTR_NOFOLLOW)
   280  }
   281  
   282  //sys	fgetxattr(fd int, attr string, dest *byte, size int, position uint32, options int) (sz int, err error)
   283  
   284  func Fgetxattr(fd int, attr string, dest []byte) (sz int, err error) {
   285  	return fgetxattr(fd, attr, xattrPointer(dest), len(dest), 0, 0)
   286  }
   287  
   288  //sys	setxattr(path string, attr string, data *byte, size int, position uint32, options int) (err error)
   289  
   290  func Setxattr(path string, attr string, data []byte, flags int) (err error) {
   291  	// The parameters for the OS X implementation vary slightly compared to the
   292  	// linux system call, specifically the position parameter:
   293  	//
   294  	//  linux:
   295  	//      int setxattr(
   296  	//          const char *path,
   297  	//          const char *name,
   298  	//          const void *value,
   299  	//          size_t size,
   300  	//          int flags
   301  	//      );
   302  	//
   303  	//  darwin:
   304  	//      int setxattr(
   305  	//          const char *path,
   306  	//          const char *name,
   307  	//          void *value,
   308  	//          size_t size,
   309  	//          u_int32_t position,
   310  	//          int options
   311  	//      );
   312  	//
   313  	// position specifies the offset within the extended attribute. In the
   314  	// current implementation, only the resource fork extended attribute makes
   315  	// use of this argument. For all others, position is reserved. We simply
   316  	// default to setting it to zero.
   317  	return setxattr(path, attr, xattrPointer(data), len(data), 0, flags)
   318  }
   319  
   320  func Lsetxattr(link string, attr string, data []byte, flags int) (err error) {
   321  	return setxattr(link, attr, xattrPointer(data), len(data), 0, flags|XATTR_NOFOLLOW)
   322  }
   323  
   324  //sys	fsetxattr(fd int, attr string, data *byte, size int, position uint32, options int) (err error)
   325  
   326  func Fsetxattr(fd int, attr string, data []byte, flags int) (err error) {
   327  	return fsetxattr(fd, attr, xattrPointer(data), len(data), 0, 0)
   328  }
   329  
   330  //sys	removexattr(path string, attr string, options int) (err error)
   331  
   332  func Removexattr(path string, attr string) (err error) {
   333  	// We wrap around and explicitly zero out the options provided to the OS X
   334  	// implementation of removexattr, we do so for interoperability with the
   335  	// linux variant.
   336  	return removexattr(path, attr, 0)
   337  }
   338  
   339  func Lremovexattr(link string, attr string) (err error) {
   340  	return removexattr(link, attr, XATTR_NOFOLLOW)
   341  }
   342  
   343  //sys	fremovexattr(fd int, attr string, options int) (err error)
   344  
   345  func Fremovexattr(fd int, attr string) (err error) {
   346  	return fremovexattr(fd, attr, 0)
   347  }
   348  
   349  //sys	listxattr(path string, dest *byte, size int, options int) (sz int, err error)
   350  
   351  func Listxattr(path string, dest []byte) (sz int, err error) {
   352  	return listxattr(path, xattrPointer(dest), len(dest), 0)
   353  }
   354  
   355  func Llistxattr(link string, dest []byte) (sz int, err error) {
   356  	return listxattr(link, xattrPointer(dest), len(dest), XATTR_NOFOLLOW)
   357  }
   358  
   359  //sys	flistxattr(fd int, dest *byte, size int, options int) (sz int, err error)
   360  
   361  func Flistxattr(fd int, dest []byte) (sz int, err error) {
   362  	return flistxattr(fd, xattrPointer(dest), len(dest), 0)
   363  }
   364  
   365  //sys	utimensat(dirfd int, path string, times *[2]Timespec, flags int) (err error)
   366  
   367  /*
   368   * Wrapped
   369   */
   370  
   371  //sys	fcntl(fd int, cmd int, arg int) (val int, err error)
   372  
   373  //sys	kill(pid int, signum int, posix int) (err error)
   374  
   375  func Kill(pid int, signum syscall.Signal) (err error) { return kill(pid, int(signum), 1) }
   376  
   377  //sys	ioctl(fd int, req uint, arg uintptr) (err error)
   378  //sys	ioctlPtr(fd int, req uint, arg unsafe.Pointer) (err error) = SYS_IOCTL
   379  
   380  func IoctlCtlInfo(fd int, ctlInfo *CtlInfo) error {
   381  	return ioctlPtr(fd, CTLIOCGINFO, unsafe.Pointer(ctlInfo))
   382  }
   383  
   384  // IfreqMTU is struct ifreq used to get or set a network device's MTU.
   385  type IfreqMTU struct {
   386  	Name [IFNAMSIZ]byte
   387  	MTU  int32
   388  }
   389  
   390  // IoctlGetIfreqMTU performs the SIOCGIFMTU ioctl operation on fd to get the MTU
   391  // of the network device specified by ifname.
   392  func IoctlGetIfreqMTU(fd int, ifname string) (*IfreqMTU, error) {
   393  	var ifreq IfreqMTU
   394  	copy(ifreq.Name[:], ifname)
   395  	err := ioctlPtr(fd, SIOCGIFMTU, unsafe.Pointer(&ifreq))
   396  	return &ifreq, err
   397  }
   398  
   399  // IoctlSetIfreqMTU performs the SIOCSIFMTU ioctl operation on fd to set the MTU
   400  // of the network device specified by ifreq.Name.
   401  func IoctlSetIfreqMTU(fd int, ifreq *IfreqMTU) error {
   402  	return ioctlPtr(fd, SIOCSIFMTU, unsafe.Pointer(ifreq))
   403  }
   404  
   405  //sys	sysctl(mib []_C_int, old *byte, oldlen *uintptr, new *byte, newlen uintptr) (err error) = SYS_SYSCTL
   406  
   407  func Uname(uname *Utsname) error {
   408  	mib := []_C_int{CTL_KERN, KERN_OSTYPE}
   409  	n := unsafe.Sizeof(uname.Sysname)
   410  	if err := sysctl(mib, &uname.Sysname[0], &n, nil, 0); err != nil {
   411  		return err
   412  	}
   413  
   414  	mib = []_C_int{CTL_KERN, KERN_HOSTNAME}
   415  	n = unsafe.Sizeof(uname.Nodename)
   416  	if err := sysctl(mib, &uname.Nodename[0], &n, nil, 0); err != nil {
   417  		return err
   418  	}
   419  
   420  	mib = []_C_int{CTL_KERN, KERN_OSRELEASE}
   421  	n = unsafe.Sizeof(uname.Release)
   422  	if err := sysctl(mib, &uname.Release[0], &n, nil, 0); err != nil {
   423  		return err
   424  	}
   425  
   426  	mib = []_C_int{CTL_KERN, KERN_VERSION}
   427  	n = unsafe.Sizeof(uname.Version)
   428  	if err := sysctl(mib, &uname.Version[0], &n, nil, 0); err != nil {
   429  		return err
   430  	}
   431  
   432  	// The version might have newlines or tabs in it, convert them to
   433  	// spaces.
   434  	for i, b := range uname.Version {
   435  		if b == '\n' || b == '\t' {
   436  			if i == len(uname.Version)-1 {
   437  				uname.Version[i] = 0
   438  			} else {
   439  				uname.Version[i] = ' '
   440  			}
   441  		}
   442  	}
   443  
   444  	mib = []_C_int{CTL_HW, HW_MACHINE}
   445  	n = unsafe.Sizeof(uname.Machine)
   446  	if err := sysctl(mib, &uname.Machine[0], &n, nil, 0); err != nil {
   447  		return err
   448  	}
   449  
   450  	return nil
   451  }
   452  
   453  func Sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) {
   454  	if raceenabled {
   455  		raceReleaseMerge(unsafe.Pointer(&ioSync))
   456  	}
   457  	var length = int64(count)
   458  	err = sendfile(infd, outfd, *offset, &length, nil, 0)
   459  	written = int(length)
   460  	return
   461  }
   462  
   463  func GetsockoptIPMreqn(fd, level, opt int) (*IPMreqn, error) {
   464  	var value IPMreqn
   465  	vallen := _Socklen(SizeofIPMreqn)
   466  	errno := getsockopt(fd, level, opt, unsafe.Pointer(&value), &vallen)
   467  	return &value, errno
   468  }
   469  
   470  func SetsockoptIPMreqn(fd, level, opt int, mreq *IPMreqn) (err error) {
   471  	return setsockopt(fd, level, opt, unsafe.Pointer(mreq), unsafe.Sizeof(*mreq))
   472  }
   473  
   474  // GetsockoptXucred is a getsockopt wrapper that returns an Xucred struct.
   475  // The usual level and opt are SOL_LOCAL and LOCAL_PEERCRED, respectively.
   476  func GetsockoptXucred(fd, level, opt int) (*Xucred, error) {
   477  	x := new(Xucred)
   478  	vallen := _Socklen(SizeofXucred)
   479  	err := getsockopt(fd, level, opt, unsafe.Pointer(x), &vallen)
   480  	return x, err
   481  }
   482  
   483  func GetsockoptTCPConnectionInfo(fd, level, opt int) (*TCPConnectionInfo, error) {
   484  	var value TCPConnectionInfo
   485  	vallen := _Socklen(SizeofTCPConnectionInfo)
   486  	err := getsockopt(fd, level, opt, unsafe.Pointer(&value), &vallen)
   487  	return &value, err
   488  }
   489  
   490  func SysctlKinfoProc(name string, args ...int) (*KinfoProc, error) {
   491  	mib, err := sysctlmib(name, args...)
   492  	if err != nil {
   493  		return nil, err
   494  	}
   495  
   496  	var kinfo KinfoProc
   497  	n := uintptr(SizeofKinfoProc)
   498  	if err := sysctl(mib, (*byte)(unsafe.Pointer(&kinfo)), &n, nil, 0); err != nil {
   499  		return nil, err
   500  	}
   501  	if n != SizeofKinfoProc {
   502  		return nil, EIO
   503  	}
   504  	return &kinfo, nil
   505  }
   506  
   507  func SysctlKinfoProcSlice(name string, args ...int) ([]KinfoProc, error) {
   508  	mib, err := sysctlmib(name, args...)
   509  	if err != nil {
   510  		return nil, err
   511  	}
   512  
   513  	for {
   514  		// Find size.
   515  		n := uintptr(0)
   516  		if err := sysctl(mib, nil, &n, nil, 0); err != nil {
   517  			return nil, err
   518  		}
   519  		if n == 0 {
   520  			return nil, nil
   521  		}
   522  		if n%SizeofKinfoProc != 0 {
   523  			return nil, fmt.Errorf("sysctl() returned a size of %d, which is not a multiple of %d", n, SizeofKinfoProc)
   524  		}
   525  
   526  		// Read into buffer of that size.
   527  		buf := make([]KinfoProc, n/SizeofKinfoProc)
   528  		if err := sysctl(mib, (*byte)(unsafe.Pointer(&buf[0])), &n, nil, 0); err != nil {
   529  			if err == ENOMEM {
   530  				// Process table grew. Try again.
   531  				continue
   532  			}
   533  			return nil, err
   534  		}
   535  		if n%SizeofKinfoProc != 0 {
   536  			return nil, fmt.Errorf("sysctl() returned a size of %d, which is not a multiple of %d", n, SizeofKinfoProc)
   537  		}
   538  
   539  		// The actual call may return less than the original reported required
   540  		// size so ensure we deal with that.
   541  		return buf[:n/SizeofKinfoProc], nil
   542  	}
   543  }
   544  
   545  //sys	pthread_chdir_np(path string) (err error)
   546  
   547  func PthreadChdir(path string) (err error) {
   548  	return pthread_chdir_np(path)
   549  }
   550  
   551  //sys	pthread_fchdir_np(fd int) (err error)
   552  
   553  func PthreadFchdir(fd int) (err error) {
   554  	return pthread_fchdir_np(fd)
   555  }
   556  
   557  //sys	sendfile(infd int, outfd int, offset int64, len *int64, hdtr unsafe.Pointer, flags int) (err error)
   558  
   559  //sys	shmat(id int, addr uintptr, flag int) (ret uintptr, err error)
   560  //sys	shmctl(id int, cmd int, buf *SysvShmDesc) (result int, err error)
   561  //sys	shmdt(addr uintptr) (err error)
   562  //sys	shmget(key int, size int, flag int) (id int, err error)
   563  
   564  /*
   565   * Exposed directly
   566   */
   567  //sys	Access(path string, mode uint32) (err error)
   568  //sys	Adjtime(delta *Timeval, olddelta *Timeval) (err error)
   569  //sys	Chdir(path string) (err error)
   570  //sys	Chflags(path string, flags int) (err error)
   571  //sys	Chmod(path string, mode uint32) (err error)
   572  //sys	Chown(path string, uid int, gid int) (err error)
   573  //sys	Chroot(path string) (err error)
   574  //sys	ClockGettime(clockid int32, time *Timespec) (err error)
   575  //sys	Close(fd int) (err error)
   576  //sys	Clonefile(src string, dst string, flags int) (err error)
   577  //sys	Clonefileat(srcDirfd int, src string, dstDirfd int, dst string, flags int) (err error)
   578  //sys	Dup(fd int) (nfd int, err error)
   579  //sys	Dup2(from int, to int) (err error)
   580  //sys	Exchangedata(path1 string, path2 string, options int) (err error)
   581  //sys	Exit(code int)
   582  //sys	Faccessat(dirfd int, path string, mode uint32, flags int) (err error)
   583  //sys	Fchdir(fd int) (err error)
   584  //sys	Fchflags(fd int, flags int) (err error)
   585  //sys	Fchmod(fd int, mode uint32) (err error)
   586  //sys	Fchmodat(dirfd int, path string, mode uint32, flags int) (err error)
   587  //sys	Fchown(fd int, uid int, gid int) (err error)
   588  //sys	Fchownat(dirfd int, path string, uid int, gid int, flags int) (err error)
   589  //sys	Fclonefileat(srcDirfd int, dstDirfd int, dst string, flags int) (err error)
   590  //sys	Flock(fd int, how int) (err error)
   591  //sys	Fpathconf(fd int, name int) (val int, err error)
   592  //sys	Fsync(fd int) (err error)
   593  //sys	Ftruncate(fd int, length int64) (err error)
   594  //sys	Getcwd(buf []byte) (n int, err error)
   595  //sys	Getdtablesize() (size int)
   596  //sysnb	Getegid() (egid int)
   597  //sysnb	Geteuid() (uid int)
   598  //sysnb	Getgid() (gid int)
   599  //sysnb	Getpgid(pid int) (pgid int, err error)
   600  //sysnb	Getpgrp() (pgrp int)
   601  //sysnb	Getpid() (pid int)
   602  //sysnb	Getppid() (ppid int)
   603  //sys	Getpriority(which int, who int) (prio int, err error)
   604  //sysnb	Getrlimit(which int, lim *Rlimit) (err error)
   605  //sysnb	Getrusage(who int, rusage *Rusage) (err error)
   606  //sysnb	Getsid(pid int) (sid int, err error)
   607  //sysnb	Gettimeofday(tp *Timeval) (err error)
   608  //sysnb	Getuid() (uid int)
   609  //sysnb	Issetugid() (tainted bool)
   610  //sys	Kqueue() (fd int, err error)
   611  //sys	Lchown(path string, uid int, gid int) (err error)
   612  //sys	Link(path string, link string) (err error)
   613  //sys	Linkat(pathfd int, path string, linkfd int, link string, flags int) (err error)
   614  //sys	Listen(s int, backlog int) (err error)
   615  //sys	Mkdir(path string, mode uint32) (err error)
   616  //sys	Mkdirat(dirfd int, path string, mode uint32) (err error)
   617  //sys	Mkfifo(path string, mode uint32) (err error)
   618  //sys	Mknod(path string, mode uint32, dev int) (err error)
   619  //sys	Mount(fsType string, dir string, flags int, data unsafe.Pointer) (err error)
   620  //sys	Open(path string, mode int, perm uint32) (fd int, err error)
   621  //sys	Openat(dirfd int, path string, mode int, perm uint32) (fd int, err error)
   622  //sys	Pathconf(path string, name int) (val int, err error)
   623  //sys	pread(fd int, p []byte, offset int64) (n int, err error)
   624  //sys	pwrite(fd int, p []byte, offset int64) (n int, err error)
   625  //sys	read(fd int, p []byte) (n int, err error)
   626  //sys	Readlink(path string, buf []byte) (n int, err error)
   627  //sys	Readlinkat(dirfd int, path string, buf []byte) (n int, err error)
   628  //sys	Rename(from string, to string) (err error)
   629  //sys	Renameat(fromfd int, from string, tofd int, to string) (err error)
   630  //sys	Revoke(path string) (err error)
   631  //sys	Rmdir(path string) (err error)
   632  //sys	Seek(fd int, offset int64, whence int) (newoffset int64, err error) = SYS_LSEEK
   633  //sys	Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, err error)
   634  //sys	Setattrlist(path string, attrlist *Attrlist, attrBuf []byte, options int) (err error)
   635  //sys	Setegid(egid int) (err error)
   636  //sysnb	Seteuid(euid int) (err error)
   637  //sysnb	Setgid(gid int) (err error)
   638  //sys	Setlogin(name string) (err error)
   639  //sysnb	Setpgid(pid int, pgid int) (err error)
   640  //sys	Setpriority(which int, who int, prio int) (err error)
   641  //sys	Setprivexec(flag int) (err error)
   642  //sysnb	Setregid(rgid int, egid int) (err error)
   643  //sysnb	Setreuid(ruid int, euid int) (err error)
   644  //sysnb	Setsid() (pid int, err error)
   645  //sysnb	Settimeofday(tp *Timeval) (err error)
   646  //sysnb	Setuid(uid int) (err error)
   647  //sys	Symlink(path string, link string) (err error)
   648  //sys	Symlinkat(oldpath string, newdirfd int, newpath string) (err error)
   649  //sys	Sync() (err error)
   650  //sys	Truncate(path string, length int64) (err error)
   651  //sys	Umask(newmask int) (oldmask int)
   652  //sys	Undelete(path string) (err error)
   653  //sys	Unlink(path string) (err error)
   654  //sys	Unlinkat(dirfd int, path string, flags int) (err error)
   655  //sys	Unmount(path string, flags int) (err error)
   656  //sys	write(fd int, p []byte) (n int, err error)
   657  //sys	mmap(addr uintptr, length uintptr, prot int, flag int, fd int, pos int64) (ret uintptr, err error)
   658  //sys	munmap(addr uintptr, length uintptr) (err error)
   659  

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