vendor/golang.org/x/sys/unix/syscall_dragonfly.go

   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