github.com/go-xe2/third@v1.0.3/golang.org/x/sys/unix/syscall_dragonfly.go (about)

     1  // Copyright 2009 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  // DragonFly BSD 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  // SockaddrDatalink implements the Sockaddr interface for AF_LINK type sockets.
    18  type SockaddrDatalink struct {
    19  	Len    uint8
    20  	Family uint8
    21  	Index  uint16
    22  	Type   uint8
    23  	Nlen   uint8
    24  	Alen   uint8
    25  	Slen   uint8
    26  	Data   [12]int8
    27  	Rcf    uint16
    28  	Route  [16]uint16
    29  	raw    RawSockaddrDatalink
    30  }
    31  
    32  // Translate "kern.hostname" to []_C_int{0,1,2,3}.
    33  func nametomib(name string) (mib []_C_int, err error) {
    34  	const siz = unsafe.Sizeof(mib[0])
    35  
    36  	// NOTE(rsc): It seems strange to set the buffer to have
    37  	// size CTL_MAXNAME+2 but use only CTL_MAXNAME
    38  	// as the size. I don't know why the +2 is here, but the
    39  	// kernel uses +2 for its own implementation of this function.
    40  	// I am scared that if we don't include the +2 here, the kernel
    41  	// will silently write 2 words farther than we specify
    42  	// and we'll get memory corruption.
    43  	var buf [CTL_MAXNAME + 2]_C_int
    44  	n := uintptr(CTL_MAXNAME) * siz
    45  
    46  	p := (*byte)(unsafe.Pointer(&buf[0]))
    47  	bytes, err := ByteSliceFromString(name)
    48  	if err != nil {
    49  		return nil, err
    50  	}
    51  
    52  	// Magic sysctl: "setting" 0.3 to a string name
    53  	// lets you read back the array of integers form.
    54  	if err = sysctl([]_C_int{0, 3}, p, &n, &bytes[0], uintptr(len(name))); err != nil {
    55  		return nil, err
    56  	}
    57  	return buf[0 : n/siz], nil
    58  }
    59  
    60  //sysnb pipe() (r int, w int, err error)
    61  
    62  func Pipe(p []int) (err error) {
    63  	if len(p) != 2 {
    64  		return EINVAL
    65  	}
    66  	p[0], p[1], err = pipe()
    67  	return
    68  }
    69  
    70  //sys	extpread(fd int, p []byte, flags int, offset int64) (n int, err error)
    71  func Pread(fd int, p []byte, offset int64) (n int, err error) {
    72  	return extpread(fd, p, 0, offset)
    73  }
    74  
    75  //sys	extpwrite(fd int, p []byte, flags int, offset int64) (n int, err error)
    76  func Pwrite(fd int, p []byte, offset int64) (n int, err error) {
    77  	return extpwrite(fd, p, 0, offset)
    78  }
    79  
    80  func Accept4(fd, flags int) (nfd int, sa Sockaddr, err error) {
    81  	var rsa RawSockaddrAny
    82  	var len _Socklen = SizeofSockaddrAny
    83  	nfd, err = accept4(fd, &rsa, &len, flags)
    84  	if err != nil {
    85  		return
    86  	}
    87  	if len > SizeofSockaddrAny {
    88  		panic("RawSockaddrAny too small")
    89  	}
    90  	sa, err = anyToSockaddr(fd, &rsa)
    91  	if err != nil {
    92  		Close(nfd)
    93  		nfd = 0
    94  	}
    95  	return
    96  }
    97  
    98  const ImplementsGetwd = true
    99  
   100  //sys	Getcwd(buf []byte) (n int, err error) = SYS___GETCWD
   101  
   102  func Getwd() (string, error) {
   103  	var buf [PathMax]byte
   104  	_, err := Getcwd(buf[0:])
   105  	if err != nil {
   106  		return "", err
   107  	}
   108  	n := clen(buf[:])
   109  	if n < 1 {
   110  		return "", EINVAL
   111  	}
   112  	return string(buf[:n]), nil
   113  }
   114  
   115  func Getfsstat(buf []Statfs_t, flags int) (n int, err error) {
   116  	var _p0 unsafe.Pointer
   117  	var bufsize uintptr
   118  	if len(buf) > 0 {
   119  		_p0 = unsafe.Pointer(&buf[0])
   120  		bufsize = unsafe.Sizeof(Statfs_t{}) * uintptr(len(buf))
   121  	}
   122  	r0, _, e1 := Syscall(SYS_GETFSSTAT, uintptr(_p0), bufsize, uintptr(flags))
   123  	n = int(r0)
   124  	if e1 != 0 {
   125  		err = e1
   126  	}
   127  	return
   128  }
   129  
   130  func setattrlistTimes(path string, times []Timespec, flags int) error {
   131  	// used on Darwin for UtimesNano
   132  	return ENOSYS
   133  }
   134  
   135  //sys	ioctl(fd int, req uint, arg uintptr) (err error)
   136  
   137  // ioctl itself should not be exposed directly, but additional get/set
   138  // functions for specific types are permissible.
   139  
   140  // IoctlSetInt performs an ioctl operation which sets an integer value
   141  // on fd, using the specified request number.
   142  func IoctlSetInt(fd int, req uint, value int) error {
   143  	return ioctl(fd, req, uintptr(value))
   144  }
   145  
   146  func ioctlSetWinsize(fd int, req uint, value *Winsize) error {
   147  	return ioctl(fd, req, uintptr(unsafe.Pointer(value)))
   148  }
   149  
   150  func ioctlSetTermios(fd int, req uint, value *Termios) error {
   151  	return ioctl(fd, req, uintptr(unsafe.Pointer(value)))
   152  }
   153  
   154  // IoctlGetInt performs an ioctl operation which gets an integer value
   155  // from fd, using the specified request number.
   156  func IoctlGetInt(fd int, req uint) (int, error) {
   157  	var value int
   158  	err := ioctl(fd, req, uintptr(unsafe.Pointer(&value)))
   159  	return value, err
   160  }
   161  
   162  func IoctlGetWinsize(fd int, req uint) (*Winsize, error) {
   163  	var value Winsize
   164  	err := ioctl(fd, req, uintptr(unsafe.Pointer(&value)))
   165  	return &value, err
   166  }
   167  
   168  func IoctlGetTermios(fd int, req uint) (*Termios, error) {
   169  	var value Termios
   170  	err := ioctl(fd, req, uintptr(unsafe.Pointer(&value)))
   171  	return &value, err
   172  }
   173  
   174  func sysctlUname(mib []_C_int, old *byte, oldlen *uintptr) error {
   175  	err := sysctl(mib, old, oldlen, nil, 0)
   176  	if err != nil {
   177  		// Utsname members on Dragonfly are only 32 bytes and
   178  		// the syscall returns ENOMEM in case the actual value
   179  		// is longer.
   180  		if err == ENOMEM {
   181  			err = nil
   182  		}
   183  	}
   184  	return err
   185  }
   186  
   187  func Uname(uname *Utsname) error {
   188  	mib := []_C_int{CTL_KERN, KERN_OSTYPE}
   189  	n := unsafe.Sizeof(uname.Sysname)
   190  	if err := sysctlUname(mib, &uname.Sysname[0], &n); err != nil {
   191  		return err
   192  	}
   193  	uname.Sysname[unsafe.Sizeof(uname.Sysname)-1] = 0
   194  
   195  	mib = []_C_int{CTL_KERN, KERN_HOSTNAME}
   196  	n = unsafe.Sizeof(uname.Nodename)
   197  	if err := sysctlUname(mib, &uname.Nodename[0], &n); err != nil {
   198  		return err
   199  	}
   200  	uname.Nodename[unsafe.Sizeof(uname.Nodename)-1] = 0
   201  
   202  	mib = []_C_int{CTL_KERN, KERN_OSRELEASE}
   203  	n = unsafe.Sizeof(uname.Release)
   204  	if err := sysctlUname(mib, &uname.Release[0], &n); err != nil {
   205  		return err
   206  	}
   207  	uname.Release[unsafe.Sizeof(uname.Release)-1] = 0
   208  
   209  	mib = []_C_int{CTL_KERN, KERN_VERSION}
   210  	n = unsafe.Sizeof(uname.Version)
   211  	if err := sysctlUname(mib, &uname.Version[0], &n); err != nil {
   212  		return err
   213  	}
   214  
   215  	// The version might have newlines or tabs in it, convert them to
   216  	// spaces.
   217  	for i, b := range uname.Version {
   218  		if b == '\n' || b == '\t' {
   219  			if i == len(uname.Version)-1 {
   220  				uname.Version[i] = 0
   221  			} else {
   222  				uname.Version[i] = ' '
   223  			}
   224  		}
   225  	}
   226  
   227  	mib = []_C_int{CTL_HW, HW_MACHINE}
   228  	n = unsafe.Sizeof(uname.Machine)
   229  	if err := sysctlUname(mib, &uname.Machine[0], &n); err != nil {
   230  		return err
   231  	}
   232  	uname.Machine[unsafe.Sizeof(uname.Machine)-1] = 0
   233  
   234  	return nil
   235  }
   236  
   237  func Sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) {
   238  	if raceenabled {
   239  		raceReleaseMerge(unsafe.Pointer(&ioSync))
   240  	}
   241  	return sendfile(outfd, infd, offset, count)
   242  }
   243  
   244  /*
   245   * Exposed directly
   246   */
   247  //sys	Access(path string, mode uint32) (err error)
   248  //sys	Adjtime(delta *Timeval, olddelta *Timeval) (err error)
   249  //sys	Chdir(path string) (err error)
   250  //sys	Chflags(path string, flags int) (err error)
   251  //sys	Chmod(path string, mode uint32) (err error)
   252  //sys	Chown(path string, uid int, gid int) (err error)
   253  //sys	Chroot(path string) (err error)
   254  //sys	Close(fd int) (err error)
   255  //sys	Dup(fd int) (nfd int, err error)
   256  //sys	Dup2(from int, to int) (err error)
   257  //sys	Exit(code int)
   258  //sys	Faccessat(dirfd int, path string, mode uint32, flags int) (err error)
   259  //sys	Fchdir(fd int) (err error)
   260  //sys	Fchflags(fd int, flags int) (err error)
   261  //sys	Fchmod(fd int, mode uint32) (err error)
   262  //sys	Fchmodat(dirfd int, path string, mode uint32, flags int) (err error)
   263  //sys	Fchown(fd int, uid int, gid int) (err error)
   264  //sys	Fchownat(dirfd int, path string, uid int, gid int, flags int) (err error)
   265  //sys	Flock(fd int, how int) (err error)
   266  //sys	Fpathconf(fd int, name int) (val int, err error)
   267  //sys	Fstat(fd int, stat *Stat_t) (err error)
   268  //sys	Fstatat(fd int, path string, stat *Stat_t, flags int) (err error)
   269  //sys	Fstatfs(fd int, stat *Statfs_t) (err error)
   270  //sys	Fsync(fd int) (err error)
   271  //sys	Ftruncate(fd int, length int64) (err error)
   272  //sys	Getdirentries(fd int, buf []byte, basep *uintptr) (n int, err error)
   273  //sys	Getdtablesize() (size int)
   274  //sysnb	Getegid() (egid int)
   275  //sysnb	Geteuid() (uid int)
   276  //sysnb	Getgid() (gid int)
   277  //sysnb	Getpgid(pid int) (pgid int, err error)
   278  //sysnb	Getpgrp() (pgrp int)
   279  //sysnb	Getpid() (pid int)
   280  //sysnb	Getppid() (ppid int)
   281  //sys	Getpriority(which int, who int) (prio int, err error)
   282  //sysnb	Getrlimit(which int, lim *Rlimit) (err error)
   283  //sysnb	Getrusage(who int, rusage *Rusage) (err error)
   284  //sysnb	Getsid(pid int) (sid int, err error)
   285  //sysnb	Gettimeofday(tv *Timeval) (err error)
   286  //sysnb	Getuid() (uid int)
   287  //sys	Issetugid() (tainted bool)
   288  //sys	Kill(pid int, signum syscall.Signal) (err error)
   289  //sys	Kqueue() (fd int, err error)
   290  //sys	Lchown(path string, uid int, gid int) (err error)
   291  //sys	Link(path string, link string) (err error)
   292  //sys	Linkat(pathfd int, path string, linkfd int, link string, flags int) (err error)
   293  //sys	Listen(s int, backlog int) (err error)
   294  //sys	Lstat(path string, stat *Stat_t) (err error)
   295  //sys	Mkdir(path string, mode uint32) (err error)
   296  //sys	Mkdirat(dirfd int, path string, mode uint32) (err error)
   297  //sys	Mkfifo(path string, mode uint32) (err error)
   298  //sys	Mknod(path string, mode uint32, dev int) (err error)
   299  //sys	Mknodat(fd int, path string, mode uint32, dev int) (err error)
   300  //sys	Nanosleep(time *Timespec, leftover *Timespec) (err error)
   301  //sys	Open(path string, mode int, perm uint32) (fd int, err error)
   302  //sys	Openat(dirfd int, path string, mode int, perm uint32) (fd int, err error)
   303  //sys	Pathconf(path string, name int) (val int, err error)
   304  //sys	read(fd int, p []byte) (n int, err error)
   305  //sys	Readlink(path string, buf []byte) (n int, err error)
   306  //sys	Rename(from string, to string) (err error)
   307  //sys	Renameat(fromfd int, from string, tofd int, to string) (err error)
   308  //sys	Revoke(path string) (err error)
   309  //sys	Rmdir(path string) (err error)
   310  //sys	Seek(fd int, offset int64, whence int) (newoffset int64, err error) = SYS_LSEEK
   311  //sys	Select(n int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (err error)
   312  //sysnb	Setegid(egid int) (err error)
   313  //sysnb	Seteuid(euid int) (err error)
   314  //sysnb	Setgid(gid int) (err error)
   315  //sys	Setlogin(name string) (err error)
   316  //sysnb	Setpgid(pid int, pgid int) (err error)
   317  //sys	Setpriority(which int, who int, prio int) (err error)
   318  //sysnb	Setregid(rgid int, egid int) (err error)
   319  //sysnb	Setreuid(ruid int, euid int) (err error)
   320  //sysnb	Setresgid(rgid int, egid int, sgid int) (err error)
   321  //sysnb	Setresuid(ruid int, euid int, suid int) (err error)
   322  //sysnb	Setrlimit(which int, lim *Rlimit) (err error)
   323  //sysnb	Setsid() (pid int, err error)
   324  //sysnb	Settimeofday(tp *Timeval) (err error)
   325  //sysnb	Setuid(uid int) (err error)
   326  //sys	Stat(path string, stat *Stat_t) (err error)
   327  //sys	Statfs(path string, stat *Statfs_t) (err error)
   328  //sys	Symlink(path string, link string) (err error)
   329  //sys	Symlinkat(oldpath string, newdirfd int, newpath string) (err error)
   330  //sys	Sync() (err error)
   331  //sys	Truncate(path string, length int64) (err error)
   332  //sys	Umask(newmask int) (oldmask int)
   333  //sys	Undelete(path string) (err error)
   334  //sys	Unlink(path string) (err error)
   335  //sys	Unlinkat(dirfd int, path string, flags int) (err error)
   336  //sys	Unmount(path string, flags int) (err error)
   337  //sys	write(fd int, p []byte) (n int, err error)
   338  //sys   mmap(addr uintptr, length uintptr, prot int, flag int, fd int, pos int64) (ret uintptr, err error)
   339  //sys   munmap(addr uintptr, length uintptr) (err error)
   340  //sys	readlen(fd int, buf *byte, nbuf int) (n int, err error) = SYS_READ
   341  //sys	writelen(fd int, buf *byte, nbuf int) (n int, err error) = SYS_WRITE
   342  //sys	accept4(fd int, rsa *RawSockaddrAny, addrlen *_Socklen, flags int) (nfd int, err error)
   343  //sys	utimensat(dirfd int, path string, times *[2]Timespec, flags int) (err error)
   344  
   345  /*
   346   * Unimplemented
   347   * TODO(jsing): Update this list for DragonFly.
   348   */
   349  // Profil
   350  // Sigaction
   351  // Sigprocmask
   352  // Getlogin
   353  // Sigpending
   354  // Sigaltstack
   355  // Reboot
   356  // Execve
   357  // Vfork
   358  // Sbrk
   359  // Sstk
   360  // Ovadvise
   361  // Mincore
   362  // Setitimer
   363  // Swapon
   364  // Select
   365  // Sigsuspend
   366  // Readv
   367  // Writev
   368  // Nfssvc
   369  // Getfh
   370  // Quotactl
   371  // Mount
   372  // Csops
   373  // Waitid
   374  // Add_profil
   375  // Kdebug_trace
   376  // Sigreturn
   377  // Atsocket
   378  // Kqueue_from_portset_np
   379  // Kqueue_portset
   380  // Getattrlist
   381  // Setattrlist
   382  // Getdirentriesattr
   383  // Searchfs
   384  // Delete
   385  // Copyfile
   386  // Watchevent
   387  // Waitevent
   388  // Modwatch
   389  // Getxattr
   390  // Fgetxattr
   391  // Setxattr
   392  // Fsetxattr
   393  // Removexattr
   394  // Fremovexattr
   395  // Listxattr
   396  // Flistxattr
   397  // Fsctl
   398  // Initgroups
   399  // Posix_spawn
   400  // Nfsclnt
   401  // Fhopen
   402  // Minherit
   403  // Semsys
   404  // Msgsys
   405  // Shmsys
   406  // Semctl
   407  // Semget
   408  // Semop
   409  // Msgctl
   410  // Msgget
   411  // Msgsnd
   412  // Msgrcv
   413  // Shmat
   414  // Shmctl
   415  // Shmdt
   416  // Shmget
   417  // Shm_open
   418  // Shm_unlink
   419  // Sem_open
   420  // Sem_close
   421  // Sem_unlink
   422  // Sem_wait
   423  // Sem_trywait
   424  // Sem_post
   425  // Sem_getvalue
   426  // Sem_init
   427  // Sem_destroy
   428  // Open_extended
   429  // Umask_extended
   430  // Stat_extended
   431  // Lstat_extended
   432  // Fstat_extended
   433  // Chmod_extended
   434  // Fchmod_extended
   435  // Access_extended
   436  // Settid
   437  // Gettid
   438  // Setsgroups
   439  // Getsgroups
   440  // Setwgroups
   441  // Getwgroups
   442  // Mkfifo_extended
   443  // Mkdir_extended
   444  // Identitysvc
   445  // Shared_region_check_np
   446  // Shared_region_map_np
   447  // __pthread_mutex_destroy
   448  // __pthread_mutex_init
   449  // __pthread_mutex_lock
   450  // __pthread_mutex_trylock
   451  // __pthread_mutex_unlock
   452  // __pthread_cond_init
   453  // __pthread_cond_destroy
   454  // __pthread_cond_broadcast
   455  // __pthread_cond_signal
   456  // Setsid_with_pid
   457  // __pthread_cond_timedwait
   458  // Aio_fsync
   459  // Aio_return
   460  // Aio_suspend
   461  // Aio_cancel
   462  // Aio_error
   463  // Aio_read
   464  // Aio_write
   465  // Lio_listio
   466  // __pthread_cond_wait
   467  // Iopolicysys
   468  // __pthread_kill
   469  // __pthread_sigmask
   470  // __sigwait
   471  // __disable_threadsignal
   472  // __pthread_markcancel
   473  // __pthread_canceled
   474  // __semwait_signal
   475  // Proc_info
   476  // Stat64_extended
   477  // Lstat64_extended
   478  // Fstat64_extended
   479  // __pthread_chdir
   480  // __pthread_fchdir
   481  // Audit
   482  // Auditon
   483  // Getauid
   484  // Setauid
   485  // Getaudit
   486  // Setaudit
   487  // Getaudit_addr
   488  // Setaudit_addr
   489  // Auditctl
   490  // Bsdthread_create
   491  // Bsdthread_terminate
   492  // Stack_snapshot
   493  // Bsdthread_register
   494  // Workq_open
   495  // Workq_ops
   496  // __mac_execve
   497  // __mac_syscall
   498  // __mac_get_file
   499  // __mac_set_file
   500  // __mac_get_link
   501  // __mac_set_link
   502  // __mac_get_proc
   503  // __mac_set_proc
   504  // __mac_get_fd
   505  // __mac_set_fd
   506  // __mac_get_pid
   507  // __mac_get_lcid
   508  // __mac_get_lctx
   509  // __mac_set_lctx
   510  // Setlcid
   511  // Read_nocancel
   512  // Write_nocancel
   513  // Open_nocancel
   514  // Close_nocancel
   515  // Wait4_nocancel
   516  // Recvmsg_nocancel
   517  // Sendmsg_nocancel
   518  // Recvfrom_nocancel
   519  // Accept_nocancel
   520  // Fcntl_nocancel
   521  // Select_nocancel
   522  // Fsync_nocancel
   523  // Connect_nocancel
   524  // Sigsuspend_nocancel
   525  // Readv_nocancel
   526  // Writev_nocancel
   527  // Sendto_nocancel
   528  // Pread_nocancel
   529  // Pwrite_nocancel
   530  // Waitid_nocancel
   531  // Msgsnd_nocancel
   532  // Msgrcv_nocancel
   533  // Sem_wait_nocancel
   534  // Aio_suspend_nocancel
   535  // __sigwait_nocancel
   536  // __semwait_signal_nocancel
   537  // __mac_mount
   538  // __mac_get_mount
   539  // __mac_getfsstat