github.com/aayushi-bansal/sys@v0.0.0-20180118120756-90d962a959d8/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 "unsafe"
    16  
    17  type SockaddrDatalink struct {
    18  	Len    uint8
    19  	Family uint8
    20  	Index  uint16
    21  	Type   uint8
    22  	Nlen   uint8
    23  	Alen   uint8
    24  	Slen   uint8
    25  	Data   [46]int8
    26  	raw    RawSockaddrDatalink
    27  }
    28  
    29  // Translate "kern.hostname" to []_C_int{0,1,2,3}.
    30  func nametomib(name string) (mib []_C_int, err error) {
    31  	const siz = unsafe.Sizeof(mib[0])
    32  
    33  	// NOTE(rsc): It seems strange to set the buffer to have
    34  	// size CTL_MAXNAME+2 but use only CTL_MAXNAME
    35  	// as the size. I don't know why the +2 is here, but the
    36  	// kernel uses +2 for its own implementation of this function.
    37  	// I am scared that if we don't include the +2 here, the kernel
    38  	// will silently write 2 words farther than we specify
    39  	// and we'll get memory corruption.
    40  	var buf [CTL_MAXNAME + 2]_C_int
    41  	n := uintptr(CTL_MAXNAME) * siz
    42  
    43  	p := (*byte)(unsafe.Pointer(&buf[0]))
    44  	bytes, err := ByteSliceFromString(name)
    45  	if err != nil {
    46  		return nil, err
    47  	}
    48  
    49  	// Magic sysctl: "setting" 0.3 to a string name
    50  	// lets you read back the array of integers form.
    51  	if err = sysctl([]_C_int{0, 3}, p, &n, &bytes[0], uintptr(len(name))); err != nil {
    52  		return nil, err
    53  	}
    54  	return buf[0 : n/siz], nil
    55  }
    56  
    57  func direntIno(buf []byte) (uint64, bool) {
    58  	return readInt(buf, unsafe.Offsetof(Dirent{}.Fileno), unsafe.Sizeof(Dirent{}.Fileno))
    59  }
    60  
    61  func direntReclen(buf []byte) (uint64, bool) {
    62  	return readInt(buf, unsafe.Offsetof(Dirent{}.Reclen), unsafe.Sizeof(Dirent{}.Reclen))
    63  }
    64  
    65  func direntNamlen(buf []byte) (uint64, bool) {
    66  	return readInt(buf, unsafe.Offsetof(Dirent{}.Namlen), unsafe.Sizeof(Dirent{}.Namlen))
    67  }
    68  
    69  //sysnb pipe() (r int, w int, err error)
    70  
    71  func Pipe(p []int) (err error) {
    72  	if len(p) != 2 {
    73  		return EINVAL
    74  	}
    75  	p[0], p[1], err = pipe()
    76  	return
    77  }
    78  
    79  func GetsockoptIPMreqn(fd, level, opt int) (*IPMreqn, error) {
    80  	var value IPMreqn
    81  	vallen := _Socklen(SizeofIPMreqn)
    82  	errno := getsockopt(fd, level, opt, unsafe.Pointer(&value), &vallen)
    83  	return &value, errno
    84  }
    85  
    86  func SetsockoptIPMreqn(fd, level, opt int, mreq *IPMreqn) (err error) {
    87  	return setsockopt(fd, level, opt, unsafe.Pointer(mreq), unsafe.Sizeof(*mreq))
    88  }
    89  
    90  func Accept4(fd, flags int) (nfd int, sa Sockaddr, err error) {
    91  	var rsa RawSockaddrAny
    92  	var len _Socklen = SizeofSockaddrAny
    93  	nfd, err = accept4(fd, &rsa, &len, flags)
    94  	if err != nil {
    95  		return
    96  	}
    97  	if len > SizeofSockaddrAny {
    98  		panic("RawSockaddrAny too small")
    99  	}
   100  	sa, err = anyToSockaddr(&rsa)
   101  	if err != nil {
   102  		Close(nfd)
   103  		nfd = 0
   104  	}
   105  	return
   106  }
   107  
   108  const ImplementsGetwd = true
   109  
   110  //sys	Getcwd(buf []byte) (n int, err error) = SYS___GETCWD
   111  
   112  func Getwd() (string, error) {
   113  	var buf [PathMax]byte
   114  	_, err := Getcwd(buf[0:])
   115  	if err != nil {
   116  		return "", err
   117  	}
   118  	n := clen(buf[:])
   119  	if n < 1 {
   120  		return "", EINVAL
   121  	}
   122  	return string(buf[:n]), nil
   123  }
   124  
   125  func Getfsstat(buf []Statfs_t, flags int) (n int, err error) {
   126  	var _p0 unsafe.Pointer
   127  	var bufsize uintptr
   128  	if len(buf) > 0 {
   129  		_p0 = unsafe.Pointer(&buf[0])
   130  		bufsize = unsafe.Sizeof(Statfs_t{}) * uintptr(len(buf))
   131  	}
   132  	r0, _, e1 := Syscall(SYS_GETFSSTAT, uintptr(_p0), bufsize, uintptr(flags))
   133  	n = int(r0)
   134  	if e1 != 0 {
   135  		err = e1
   136  	}
   137  	return
   138  }
   139  
   140  func setattrlistTimes(path string, times []Timespec, flags int) error {
   141  	// used on Darwin for UtimesNano
   142  	return ENOSYS
   143  }
   144  
   145  // Derive extattr namespace and attribute name
   146  
   147  func xattrnamespace(fullattr string) (ns int, attr string, err error) {
   148  	s := -1
   149  	for idx, val := range fullattr {
   150  		if val == '.' {
   151  			s = idx
   152  			break
   153  		}
   154  	}
   155  
   156  	if s == -1 {
   157  		return -1, "", ENOATTR
   158  	}
   159  
   160  	namespace := fullattr[0:s]
   161  	attr = fullattr[s+1:]
   162  
   163  	switch namespace {
   164  	case "user":
   165  		return EXTATTR_NAMESPACE_USER, attr, nil
   166  	case "system":
   167  		return EXTATTR_NAMESPACE_SYSTEM, attr, nil
   168  	default:
   169  		return -1, "", ENOATTR
   170  	}
   171  }
   172  
   173  func initxattrdest(dest []byte, idx int) (d unsafe.Pointer) {
   174  	if len(dest) > idx {
   175  		return unsafe.Pointer(&dest[idx])
   176  	} else {
   177  		return unsafe.Pointer(_zero)
   178  	}
   179  }
   180  
   181  // FreeBSD implements its own syscalls to handle extended attributes
   182  
   183  func Getxattr(file string, attr string, dest []byte) (sz int, err error) {
   184  	d := initxattrdest(dest, 0)
   185  	destsize := len(dest)
   186  
   187  	nsid, a, err := xattrnamespace(attr)
   188  	if err != nil {
   189  		return -1, err
   190  	}
   191  
   192  	return ExtattrGetFile(file, nsid, a, uintptr(d), destsize)
   193  }
   194  
   195  func Fgetxattr(fd int, attr string, dest []byte) (sz int, err error) {
   196  	d := initxattrdest(dest, 0)
   197  	destsize := len(dest)
   198  
   199  	nsid, a, err := xattrnamespace(attr)
   200  	if err != nil {
   201  		return -1, err
   202  	}
   203  
   204  	return ExtattrGetFd(fd, nsid, a, uintptr(d), destsize)
   205  }
   206  
   207  func Lgetxattr(link string, attr string, dest []byte) (sz int, err error) {
   208  	d := initxattrdest(dest, 0)
   209  	destsize := len(dest)
   210  
   211  	nsid, a, err := xattrnamespace(attr)
   212  	if err != nil {
   213  		return -1, err
   214  	}
   215  
   216  	return ExtattrGetLink(link, nsid, a, uintptr(d), destsize)
   217  }
   218  
   219  // flags are unused on FreeBSD
   220  
   221  func Fsetxattr(fd int, attr string, data []byte, flags int) (err error) {
   222  	d := unsafe.Pointer(&data[0])
   223  	datasiz := len(data)
   224  
   225  	nsid, a, err := xattrnamespace(attr)
   226  	if err != nil {
   227  		return
   228  	}
   229  
   230  	_, err = ExtattrSetFd(fd, nsid, a, uintptr(d), datasiz)
   231  	return
   232  }
   233  
   234  func Setxattr(file string, attr string, data []byte, flags int) (err error) {
   235  	d := unsafe.Pointer(&data[0])
   236  	datasiz := len(data)
   237  
   238  	nsid, a, err := xattrnamespace(attr)
   239  	if err != nil {
   240  		return
   241  	}
   242  
   243  	_, err = ExtattrSetFile(file, nsid, a, uintptr(d), datasiz)
   244  	return
   245  }
   246  
   247  func Lsetxattr(link string, attr string, data []byte, flags int) (err error) {
   248  	d := unsafe.Pointer(&data[0])
   249  	datasiz := len(data)
   250  
   251  	nsid, a, err := xattrnamespace(attr)
   252  	if err != nil {
   253  		return
   254  	}
   255  
   256  	_, err = ExtattrSetLink(link, nsid, a, uintptr(d), datasiz)
   257  	return
   258  }
   259  
   260  func Removexattr(file string, attr string) (err error) {
   261  	nsid, a, err := xattrnamespace(attr)
   262  	if err != nil {
   263  		return
   264  	}
   265  
   266  	err = ExtattrDeleteFile(file, nsid, a)
   267  	return
   268  }
   269  
   270  func Fremovexattr(fd int, attr string) (err error) {
   271  	nsid, a, err := xattrnamespace(attr)
   272  	if err != nil {
   273  		return
   274  	}
   275  
   276  	err = ExtattrDeleteFd(fd, nsid, a)
   277  	return
   278  }
   279  
   280  func Lremovexattr(link string, attr string) (err error) {
   281  	nsid, a, err := xattrnamespace(attr)
   282  	if err != nil {
   283  		return
   284  	}
   285  
   286  	err = ExtattrDeleteLink(link, nsid, a)
   287  	return
   288  }
   289  
   290  func Listxattr(file string, dest []byte) (sz int, err error) {
   291  	d := initxattrdest(dest, 0)
   292  	destsiz := len(dest)
   293  
   294  	// FreeBSD won't allow you to list xattrs from multiple namespaces
   295  	s := 0
   296  	for _, nsid := range [...]int{EXTATTR_NAMESPACE_USER, EXTATTR_NAMESPACE_SYSTEM} {
   297  		stmp, e := ExtattrListFile(file, nsid, uintptr(d), destsiz)
   298  
   299  		/* Errors accessing system attrs are ignored so that
   300  		 * we can implement the Linux-like behavior of omitting errors that
   301  		 * we don't have read permissions on
   302  		 *
   303  		 * Linux will still error if we ask for user attributes on a file that
   304  		 * we don't have read permissions on, so don't ignore those errors
   305  		 */
   306  		if e != nil && e == EPERM && nsid != EXTATTR_NAMESPACE_USER {
   307  			continue
   308  		} else if e != nil {
   309  			return s, e
   310  		}
   311  
   312  		s += stmp
   313  		destsiz -= s
   314  		if destsiz < 0 {
   315  			destsiz = 0
   316  		}
   317  		d = initxattrdest(dest, s)
   318  	}
   319  
   320  	return s, nil
   321  }
   322  
   323  func Flistxattr(fd int, dest []byte) (sz int, err error) {
   324  	d := initxattrdest(dest, 0)
   325  	destsiz := len(dest)
   326  
   327  	s := 0
   328  	for _, nsid := range [...]int{EXTATTR_NAMESPACE_USER, EXTATTR_NAMESPACE_SYSTEM} {
   329  		stmp, e := ExtattrListFd(fd, nsid, uintptr(d), destsiz)
   330  		if e != nil && e == EPERM && nsid != EXTATTR_NAMESPACE_USER {
   331  			continue
   332  		} else if e != nil {
   333  			return s, e
   334  		}
   335  
   336  		s += stmp
   337  		destsiz -= s
   338  		if destsiz < 0 {
   339  			destsiz = 0
   340  		}
   341  		d = initxattrdest(dest, s)
   342  	}
   343  
   344  	return s, nil
   345  }
   346  
   347  func Llistxattr(link string, dest []byte) (sz int, err error) {
   348  	d := initxattrdest(dest, 0)
   349  	destsiz := len(dest)
   350  
   351  	s := 0
   352  	for _, nsid := range [...]int{EXTATTR_NAMESPACE_USER, EXTATTR_NAMESPACE_SYSTEM} {
   353  		stmp, e := ExtattrListLink(link, nsid, uintptr(d), destsiz)
   354  		if e != nil && e == EPERM && nsid != EXTATTR_NAMESPACE_USER {
   355  			continue
   356  		} else if e != nil {
   357  			return s, e
   358  		}
   359  
   360  		s += stmp
   361  		destsiz -= s
   362  		if destsiz < 0 {
   363  			destsiz = 0
   364  		}
   365  		d = initxattrdest(dest, s)
   366  	}
   367  
   368  	return s, nil
   369  }
   370  
   371  //sys   ioctl(fd int, req uint, arg uintptr) (err error)
   372  
   373  // ioctl itself should not be exposed directly, but additional get/set
   374  // functions for specific types are permissible.
   375  
   376  // IoctlSetInt performs an ioctl operation which sets an integer value
   377  // on fd, using the specified request number.
   378  func IoctlSetInt(fd int, req uint, value int) error {
   379  	return ioctl(fd, req, uintptr(value))
   380  }
   381  
   382  func IoctlSetWinsize(fd int, req uint, value *Winsize) error {
   383  	return ioctl(fd, req, uintptr(unsafe.Pointer(value)))
   384  }
   385  
   386  func IoctlSetTermios(fd int, req uint, value *Termios) error {
   387  	return ioctl(fd, req, uintptr(unsafe.Pointer(value)))
   388  }
   389  
   390  // IoctlGetInt performs an ioctl operation which gets an integer value
   391  // from fd, using the specified request number.
   392  func IoctlGetInt(fd int, req uint) (int, error) {
   393  	var value int
   394  	err := ioctl(fd, req, uintptr(unsafe.Pointer(&value)))
   395  	return value, err
   396  }
   397  
   398  func IoctlGetWinsize(fd int, req uint) (*Winsize, error) {
   399  	var value Winsize
   400  	err := ioctl(fd, req, uintptr(unsafe.Pointer(&value)))
   401  	return &value, err
   402  }
   403  
   404  func IoctlGetTermios(fd int, req uint) (*Termios, error) {
   405  	var value Termios
   406  	err := ioctl(fd, req, uintptr(unsafe.Pointer(&value)))
   407  	return &value, err
   408  }
   409  
   410  func Uname(uname *Utsname) error {
   411  	mib := []_C_int{CTL_KERN, KERN_OSTYPE}
   412  	n := unsafe.Sizeof(uname.Sysname)
   413  	if err := sysctl(mib, &uname.Sysname[0], &n, nil, 0); err != nil {
   414  		return err
   415  	}
   416  
   417  	mib = []_C_int{CTL_KERN, KERN_HOSTNAME}
   418  	n = unsafe.Sizeof(uname.Nodename)
   419  	if err := sysctl(mib, &uname.Nodename[0], &n, nil, 0); err != nil {
   420  		return err
   421  	}
   422  
   423  	mib = []_C_int{CTL_KERN, KERN_OSRELEASE}
   424  	n = unsafe.Sizeof(uname.Release)
   425  	if err := sysctl(mib, &uname.Release[0], &n, nil, 0); err != nil {
   426  		return err
   427  	}
   428  
   429  	mib = []_C_int{CTL_KERN, KERN_VERSION}
   430  	n = unsafe.Sizeof(uname.Version)
   431  	if err := sysctl(mib, &uname.Version[0], &n, nil, 0); err != nil {
   432  		return err
   433  	}
   434  
   435  	// The version might have newlines or tabs in it, convert them to
   436  	// spaces.
   437  	for i, b := range uname.Version {
   438  		if b == '\n' || b == '\t' {
   439  			if i == len(uname.Version)-1 {
   440  				uname.Version[i] = 0
   441  			} else {
   442  				uname.Version[i] = ' '
   443  			}
   444  		}
   445  	}
   446  
   447  	mib = []_C_int{CTL_HW, HW_MACHINE}
   448  	n = unsafe.Sizeof(uname.Machine)
   449  	if err := sysctl(mib, &uname.Machine[0], &n, nil, 0); err != nil {
   450  		return err
   451  	}
   452  
   453  	return nil
   454  }
   455  
   456  /*
   457   * Exposed directly
   458   */
   459  //sys	Access(path string, mode uint32) (err error)
   460  //sys	Adjtime(delta *Timeval, olddelta *Timeval) (err error)
   461  //sys	CapEnter() (err error)
   462  //sys	capRightsGet(version int, fd int, rightsp *CapRights) (err error) = SYS___CAP_RIGHTS_GET
   463  //sys	capRightsLimit(fd int, rightsp *CapRights) (err error)
   464  //sys	Chdir(path string) (err error)
   465  //sys	Chflags(path string, flags int) (err error)
   466  //sys	Chmod(path string, mode uint32) (err error)
   467  //sys	Chown(path string, uid int, gid int) (err error)
   468  //sys	Chroot(path string) (err error)
   469  //sys	Close(fd int) (err error)
   470  //sys	Dup(fd int) (nfd int, err error)
   471  //sys	Dup2(from int, to int) (err error)
   472  //sys	Exit(code int)
   473  //sys	ExtattrGetFd(fd int, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)
   474  //sys	ExtattrSetFd(fd int, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)
   475  //sys	ExtattrDeleteFd(fd int, attrnamespace int, attrname string) (err error)
   476  //sys	ExtattrListFd(fd int, attrnamespace int, data uintptr, nbytes int) (ret int, err error)
   477  //sys	ExtattrGetFile(file string, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)
   478  //sys	ExtattrSetFile(file string, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)
   479  //sys	ExtattrDeleteFile(file string, attrnamespace int, attrname string) (err error)
   480  //sys	ExtattrListFile(file string, attrnamespace int, data uintptr, nbytes int) (ret int, err error)
   481  //sys	ExtattrGetLink(link string, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)
   482  //sys	ExtattrSetLink(link string, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)
   483  //sys	ExtattrDeleteLink(link string, attrnamespace int, attrname string) (err error)
   484  //sys	ExtattrListLink(link string, attrnamespace int, data uintptr, nbytes int) (ret int, err error)
   485  //sys	Fadvise(fd int, offset int64, length int64, advice int) (err error) = SYS_POSIX_FADVISE
   486  //sys	Faccessat(dirfd int, path string, mode uint32, flags int) (err error)
   487  //sys	Fchdir(fd int) (err error)
   488  //sys	Fchflags(fd int, flags int) (err error)
   489  //sys	Fchmod(fd int, mode uint32) (err error)
   490  //sys	Fchmodat(dirfd int, path string, mode uint32, flags int) (err error)
   491  //sys	Fchown(fd int, uid int, gid int) (err error)
   492  //sys	Fchownat(dirfd int, path string, uid int, gid int, flags int) (err error)
   493  //sys	Flock(fd int, how int) (err error)
   494  //sys	Fpathconf(fd int, name int) (val int, err error)
   495  //sys	Fstat(fd int, stat *Stat_t) (err error)
   496  //sys	Fstatfs(fd int, stat *Statfs_t) (err error)
   497  //sys	Fsync(fd int) (err error)
   498  //sys	Ftruncate(fd int, length int64) (err error)
   499  //sys	Getdents(fd int, buf []byte) (n int, err error)
   500  //sys	Getdirentries(fd int, buf []byte, basep *uintptr) (n int, err error)
   501  //sys	Getdtablesize() (size int)
   502  //sysnb	Getegid() (egid int)
   503  //sysnb	Geteuid() (uid int)
   504  //sysnb	Getgid() (gid int)
   505  //sysnb	Getpgid(pid int) (pgid int, err error)
   506  //sysnb	Getpgrp() (pgrp int)
   507  //sysnb	Getpid() (pid int)
   508  //sysnb	Getppid() (ppid int)
   509  //sys	Getpriority(which int, who int) (prio int, err error)
   510  //sysnb	Getrlimit(which int, lim *Rlimit) (err error)
   511  //sysnb	Getrusage(who int, rusage *Rusage) (err error)
   512  //sysnb	Getsid(pid int) (sid int, err error)
   513  //sysnb	Gettimeofday(tv *Timeval) (err error)
   514  //sysnb	Getuid() (uid int)
   515  //sys	Issetugid() (tainted bool)
   516  //sys	Kill(pid int, signum syscall.Signal) (err error)
   517  //sys	Kqueue() (fd int, err error)
   518  //sys	Lchown(path string, uid int, gid int) (err error)
   519  //sys	Link(path string, link string) (err error)
   520  //sys	Linkat(pathfd int, path string, linkfd int, link string, flags int) (err error)
   521  //sys	Listen(s int, backlog int) (err error)
   522  //sys	Lstat(path string, stat *Stat_t) (err error)
   523  //sys	Mkdir(path string, mode uint32) (err error)
   524  //sys	Mkdirat(dirfd int, path string, mode uint32) (err error)
   525  //sys	Mkfifo(path string, mode uint32) (err error)
   526  //sys	Mknod(path string, mode uint32, dev int) (err error)
   527  //sys	Nanosleep(time *Timespec, leftover *Timespec) (err error)
   528  //sys	Open(path string, mode int, perm uint32) (fd int, err error)
   529  //sys	Openat(fdat int, path string, mode int, perm uint32) (fd int, err error)
   530  //sys	Pathconf(path string, name int) (val int, err error)
   531  //sys	Pread(fd int, p []byte, offset int64) (n int, err error)
   532  //sys	Pwrite(fd int, p []byte, offset int64) (n int, err error)
   533  //sys	read(fd int, p []byte) (n int, err error)
   534  //sys	Readlink(path string, buf []byte) (n int, err error)
   535  //sys	Readlinkat(dirfd int, path string, buf []byte) (n int, err error)
   536  //sys	Rename(from string, to string) (err error)
   537  //sys	Renameat(fromfd int, from string, tofd int, to string) (err error)
   538  //sys	Revoke(path string) (err error)
   539  //sys	Rmdir(path string) (err error)
   540  //sys	Seek(fd int, offset int64, whence int) (newoffset int64, err error) = SYS_LSEEK
   541  //sys	Select(n int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (err error)
   542  //sysnb	Setegid(egid int) (err error)
   543  //sysnb	Seteuid(euid int) (err error)
   544  //sysnb	Setgid(gid int) (err error)
   545  //sys	Setlogin(name string) (err error)
   546  //sysnb	Setpgid(pid int, pgid int) (err error)
   547  //sys	Setpriority(which int, who int, prio int) (err error)
   548  //sysnb	Setregid(rgid int, egid int) (err error)
   549  //sysnb	Setreuid(ruid int, euid int) (err error)
   550  //sysnb	Setresgid(rgid int, egid int, sgid int) (err error)
   551  //sysnb	Setresuid(ruid int, euid int, suid int) (err error)
   552  //sysnb	Setrlimit(which int, lim *Rlimit) (err error)
   553  //sysnb	Setsid() (pid int, err error)
   554  //sysnb	Settimeofday(tp *Timeval) (err error)
   555  //sysnb	Setuid(uid int) (err error)
   556  //sys	Stat(path string, stat *Stat_t) (err error)
   557  //sys	Statfs(path string, stat *Statfs_t) (err error)
   558  //sys	Symlink(path string, link string) (err error)
   559  //sys	Symlinkat(oldpath string, newdirfd int, newpath string) (err error)
   560  //sys	Sync() (err error)
   561  //sys	Truncate(path string, length int64) (err error)
   562  //sys	Umask(newmask int) (oldmask int)
   563  //sys	Undelete(path string) (err error)
   564  //sys	Unlink(path string) (err error)
   565  //sys	Unlinkat(dirfd int, path string, flags int) (err error)
   566  //sys	Unmount(path string, flags int) (err error)
   567  //sys	write(fd int, p []byte) (n int, err error)
   568  //sys   mmap(addr uintptr, length uintptr, prot int, flag int, fd int, pos int64) (ret uintptr, err error)
   569  //sys   munmap(addr uintptr, length uintptr) (err error)
   570  //sys	readlen(fd int, buf *byte, nbuf int) (n int, err error) = SYS_READ
   571  //sys	writelen(fd int, buf *byte, nbuf int) (n int, err error) = SYS_WRITE
   572  //sys	accept4(fd int, rsa *RawSockaddrAny, addrlen *_Socklen, flags int) (nfd int, err error)
   573  //sys	utimensat(dirfd int, path string, times *[2]Timespec, flags int) (err error)
   574  
   575  /*
   576   * Unimplemented
   577   */
   578  // Profil
   579  // Sigaction
   580  // Sigprocmask
   581  // Getlogin
   582  // Sigpending
   583  // Sigaltstack
   584  // Ioctl
   585  // Reboot
   586  // Execve
   587  // Vfork
   588  // Sbrk
   589  // Sstk
   590  // Ovadvise
   591  // Mincore
   592  // Setitimer
   593  // Swapon
   594  // Select
   595  // Sigsuspend
   596  // Readv
   597  // Writev
   598  // Nfssvc
   599  // Getfh
   600  // Quotactl
   601  // Mount
   602  // Csops
   603  // Waitid
   604  // Add_profil
   605  // Kdebug_trace
   606  // Sigreturn
   607  // Atsocket
   608  // Kqueue_from_portset_np
   609  // Kqueue_portset
   610  // Getattrlist
   611  // Setattrlist
   612  // Getdirentriesattr
   613  // Searchfs
   614  // Delete
   615  // Copyfile
   616  // Watchevent
   617  // Waitevent
   618  // Modwatch
   619  // Getxattr
   620  // Fgetxattr
   621  // Setxattr
   622  // Fsetxattr
   623  // Removexattr
   624  // Fremovexattr
   625  // Listxattr
   626  // Flistxattr
   627  // Fsctl
   628  // Initgroups
   629  // Posix_spawn
   630  // Nfsclnt
   631  // Fhopen
   632  // Minherit
   633  // Semsys
   634  // Msgsys
   635  // Shmsys
   636  // Semctl
   637  // Semget
   638  // Semop
   639  // Msgctl
   640  // Msgget
   641  // Msgsnd
   642  // Msgrcv
   643  // Shmat
   644  // Shmctl
   645  // Shmdt
   646  // Shmget
   647  // Shm_open
   648  // Shm_unlink
   649  // Sem_open
   650  // Sem_close
   651  // Sem_unlink
   652  // Sem_wait
   653  // Sem_trywait
   654  // Sem_post
   655  // Sem_getvalue
   656  // Sem_init
   657  // Sem_destroy
   658  // Open_extended
   659  // Umask_extended
   660  // Stat_extended
   661  // Lstat_extended
   662  // Fstat_extended
   663  // Chmod_extended
   664  // Fchmod_extended
   665  // Access_extended
   666  // Settid
   667  // Gettid
   668  // Setsgroups
   669  // Getsgroups
   670  // Setwgroups
   671  // Getwgroups
   672  // Mkfifo_extended
   673  // Mkdir_extended
   674  // Identitysvc
   675  // Shared_region_check_np
   676  // Shared_region_map_np
   677  // __pthread_mutex_destroy
   678  // __pthread_mutex_init
   679  // __pthread_mutex_lock
   680  // __pthread_mutex_trylock
   681  // __pthread_mutex_unlock
   682  // __pthread_cond_init
   683  // __pthread_cond_destroy
   684  // __pthread_cond_broadcast
   685  // __pthread_cond_signal
   686  // Setsid_with_pid
   687  // __pthread_cond_timedwait
   688  // Aio_fsync
   689  // Aio_return
   690  // Aio_suspend
   691  // Aio_cancel
   692  // Aio_error
   693  // Aio_read
   694  // Aio_write
   695  // Lio_listio
   696  // __pthread_cond_wait
   697  // Iopolicysys
   698  // __pthread_kill
   699  // __pthread_sigmask
   700  // __sigwait
   701  // __disable_threadsignal
   702  // __pthread_markcancel
   703  // __pthread_canceled
   704  // __semwait_signal
   705  // Proc_info
   706  // Stat64_extended
   707  // Lstat64_extended
   708  // Fstat64_extended
   709  // __pthread_chdir
   710  // __pthread_fchdir
   711  // Audit
   712  // Auditon
   713  // Getauid
   714  // Setauid
   715  // Getaudit
   716  // Setaudit
   717  // Getaudit_addr
   718  // Setaudit_addr
   719  // Auditctl
   720  // Bsdthread_create
   721  // Bsdthread_terminate
   722  // Stack_snapshot
   723  // Bsdthread_register
   724  // Workq_open
   725  // Workq_ops
   726  // __mac_execve
   727  // __mac_syscall
   728  // __mac_get_file
   729  // __mac_set_file
   730  // __mac_get_link
   731  // __mac_set_link
   732  // __mac_get_proc
   733  // __mac_set_proc
   734  // __mac_get_fd
   735  // __mac_set_fd
   736  // __mac_get_pid
   737  // __mac_get_lcid
   738  // __mac_get_lctx
   739  // __mac_set_lctx
   740  // Setlcid
   741  // Read_nocancel
   742  // Write_nocancel
   743  // Open_nocancel
   744  // Close_nocancel
   745  // Wait4_nocancel
   746  // Recvmsg_nocancel
   747  // Sendmsg_nocancel
   748  // Recvfrom_nocancel
   749  // Accept_nocancel
   750  // Fcntl_nocancel
   751  // Select_nocancel
   752  // Fsync_nocancel
   753  // Connect_nocancel
   754  // Sigsuspend_nocancel
   755  // Readv_nocancel
   756  // Writev_nocancel
   757  // Sendto_nocancel
   758  // Pread_nocancel
   759  // Pwrite_nocancel
   760  // Waitid_nocancel
   761  // Poll_nocancel
   762  // Msgsnd_nocancel
   763  // Msgrcv_nocancel
   764  // Sem_wait_nocancel
   765  // Aio_suspend_nocancel
   766  // __sigwait_nocancel
   767  // __semwait_signal_nocancel
   768  // __mac_mount
   769  // __mac_get_mount
   770  // __mac_getfsstat