github.com/alexis81/domosgo@v0.0.0-20191016125037-5aee90a434af/Domos/src/golang.org/x/sys/unix/syscall_darwin.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 // 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 errorspkg "errors" 17 "syscall" 18 "unsafe" 19 ) 20 21 const ImplementsGetwd = true 22 23 func Getwd() (string, error) { 24 buf := make([]byte, 2048) 25 attrs, err := getAttrList(".", attrList{CommonAttr: attrCmnFullpath}, buf, 0) 26 if err == nil && len(attrs) == 1 && len(attrs[0]) >= 2 { 27 wd := string(attrs[0]) 28 // Sanity check that it's an absolute path and ends 29 // in a null byte, which we then strip. 30 if wd[0] == '/' && wd[len(wd)-1] == 0 { 31 return wd[:len(wd)-1], nil 32 } 33 } 34 // If pkg/os/getwd.go gets ENOTSUP, it will fall back to the 35 // slow algorithm. 36 return "", ENOTSUP 37 } 38 39 // SockaddrDatalink implements the Sockaddr interface for AF_LINK type sockets. 40 type SockaddrDatalink struct { 41 Len uint8 42 Family uint8 43 Index uint16 44 Type uint8 45 Nlen uint8 46 Alen uint8 47 Slen uint8 48 Data [12]int8 49 raw RawSockaddrDatalink 50 } 51 52 // Translate "kern.hostname" to []_C_int{0,1,2,3}. 53 func nametomib(name string) (mib []_C_int, err error) { 54 const siz = unsafe.Sizeof(mib[0]) 55 56 // NOTE(rsc): It seems strange to set the buffer to have 57 // size CTL_MAXNAME+2 but use only CTL_MAXNAME 58 // as the size. I don't know why the +2 is here, but the 59 // kernel uses +2 for its own implementation of this function. 60 // I am scared that if we don't include the +2 here, the kernel 61 // will silently write 2 words farther than we specify 62 // and we'll get memory corruption. 63 var buf [CTL_MAXNAME + 2]_C_int 64 n := uintptr(CTL_MAXNAME) * siz 65 66 p := (*byte)(unsafe.Pointer(&buf[0])) 67 bytes, err := ByteSliceFromString(name) 68 if err != nil { 69 return nil, err 70 } 71 72 // Magic sysctl: "setting" 0.3 to a string name 73 // lets you read back the array of integers form. 74 if err = sysctl([]_C_int{0, 3}, p, &n, &bytes[0], uintptr(len(name))); err != nil { 75 return nil, err 76 } 77 return buf[0 : n/siz], nil 78 } 79 80 //sys ptrace(request int, pid int, addr uintptr, data uintptr) (err error) 81 func PtraceAttach(pid int) (err error) { return ptrace(PT_ATTACH, pid, 0, 0) } 82 func PtraceDetach(pid int) (err error) { return ptrace(PT_DETACH, pid, 0, 0) } 83 84 const ( 85 attrBitMapCount = 5 86 attrCmnFullpath = 0x08000000 87 ) 88 89 type attrList struct { 90 bitmapCount uint16 91 _ uint16 92 CommonAttr uint32 93 VolAttr uint32 94 DirAttr uint32 95 FileAttr uint32 96 Forkattr uint32 97 } 98 99 func getAttrList(path string, attrList attrList, attrBuf []byte, options uint) (attrs [][]byte, err error) { 100 if len(attrBuf) < 4 { 101 return nil, errorspkg.New("attrBuf too small") 102 } 103 attrList.bitmapCount = attrBitMapCount 104 105 var _p0 *byte 106 _p0, err = BytePtrFromString(path) 107 if err != nil { 108 return nil, err 109 } 110 111 _, _, e1 := Syscall6( 112 SYS_GETATTRLIST, 113 uintptr(unsafe.Pointer(_p0)), 114 uintptr(unsafe.Pointer(&attrList)), 115 uintptr(unsafe.Pointer(&attrBuf[0])), 116 uintptr(len(attrBuf)), 117 uintptr(options), 118 0, 119 ) 120 if e1 != 0 { 121 return nil, e1 122 } 123 size := *(*uint32)(unsafe.Pointer(&attrBuf[0])) 124 125 // dat is the section of attrBuf that contains valid data, 126 // without the 4 byte length header. All attribute offsets 127 // are relative to dat. 128 dat := attrBuf 129 if int(size) < len(attrBuf) { 130 dat = dat[:size] 131 } 132 dat = dat[4:] // remove length prefix 133 134 for i := uint32(0); int(i) < len(dat); { 135 header := dat[i:] 136 if len(header) < 8 { 137 return attrs, errorspkg.New("truncated attribute header") 138 } 139 datOff := *(*int32)(unsafe.Pointer(&header[0])) 140 attrLen := *(*uint32)(unsafe.Pointer(&header[4])) 141 if datOff < 0 || uint32(datOff)+attrLen > uint32(len(dat)) { 142 return attrs, errorspkg.New("truncated results; attrBuf too small") 143 } 144 end := uint32(datOff) + attrLen 145 attrs = append(attrs, dat[datOff:end]) 146 i = end 147 if r := i % 4; r != 0 { 148 i += (4 - r) 149 } 150 } 151 return 152 } 153 154 //sysnb pipe() (r int, w int, err error) 155 156 func Pipe(p []int) (err error) { 157 if len(p) != 2 { 158 return EINVAL 159 } 160 p[0], p[1], err = pipe() 161 return 162 } 163 164 func Getfsstat(buf []Statfs_t, flags int) (n int, err error) { 165 var _p0 unsafe.Pointer 166 var bufsize uintptr 167 if len(buf) > 0 { 168 _p0 = unsafe.Pointer(&buf[0]) 169 bufsize = unsafe.Sizeof(Statfs_t{}) * uintptr(len(buf)) 170 } 171 r0, _, e1 := Syscall(SYS_GETFSSTAT64, uintptr(_p0), bufsize, uintptr(flags)) 172 n = int(r0) 173 if e1 != 0 { 174 err = e1 175 } 176 return 177 } 178 179 func setattrlistTimes(path string, times []Timespec, flags int) error { 180 _p0, err := BytePtrFromString(path) 181 if err != nil { 182 return err 183 } 184 185 var attrList attrList 186 attrList.bitmapCount = ATTR_BIT_MAP_COUNT 187 attrList.CommonAttr = ATTR_CMN_MODTIME | ATTR_CMN_ACCTIME 188 189 // order is mtime, atime: the opposite of Chtimes 190 attributes := [2]Timespec{times[1], times[0]} 191 options := 0 192 if flags&AT_SYMLINK_NOFOLLOW != 0 { 193 options |= FSOPT_NOFOLLOW 194 } 195 _, _, e1 := Syscall6( 196 SYS_SETATTRLIST, 197 uintptr(unsafe.Pointer(_p0)), 198 uintptr(unsafe.Pointer(&attrList)), 199 uintptr(unsafe.Pointer(&attributes)), 200 uintptr(unsafe.Sizeof(attributes)), 201 uintptr(options), 202 0, 203 ) 204 if e1 != 0 { 205 return e1 206 } 207 return nil 208 } 209 210 func utimensat(dirfd int, path string, times *[2]Timespec, flags int) error { 211 // Darwin doesn't support SYS_UTIMENSAT 212 return ENOSYS 213 } 214 215 /* 216 * Wrapped 217 */ 218 219 //sys kill(pid int, signum int, posix int) (err error) 220 221 func Kill(pid int, signum syscall.Signal) (err error) { return kill(pid, int(signum), 1) } 222 223 //sys ioctl(fd int, req uint, arg uintptr) (err error) 224 225 // ioctl itself should not be exposed directly, but additional get/set 226 // functions for specific types are permissible. 227 228 // IoctlSetInt performs an ioctl operation which sets an integer value 229 // on fd, using the specified request number. 230 func IoctlSetInt(fd int, req uint, value int) error { 231 return ioctl(fd, req, uintptr(value)) 232 } 233 234 func IoctlSetWinsize(fd int, req uint, value *Winsize) error { 235 return ioctl(fd, req, uintptr(unsafe.Pointer(value))) 236 } 237 238 func IoctlSetTermios(fd int, req uint, value *Termios) error { 239 return ioctl(fd, req, uintptr(unsafe.Pointer(value))) 240 } 241 242 // IoctlGetInt performs an ioctl operation which gets an integer value 243 // from fd, using the specified request number. 244 func IoctlGetInt(fd int, req uint) (int, error) { 245 var value int 246 err := ioctl(fd, req, uintptr(unsafe.Pointer(&value))) 247 return value, err 248 } 249 250 func IoctlGetWinsize(fd int, req uint) (*Winsize, error) { 251 var value Winsize 252 err := ioctl(fd, req, uintptr(unsafe.Pointer(&value))) 253 return &value, err 254 } 255 256 func IoctlGetTermios(fd int, req uint) (*Termios, error) { 257 var value Termios 258 err := ioctl(fd, req, uintptr(unsafe.Pointer(&value))) 259 return &value, err 260 } 261 262 func Uname(uname *Utsname) error { 263 mib := []_C_int{CTL_KERN, KERN_OSTYPE} 264 n := unsafe.Sizeof(uname.Sysname) 265 if err := sysctl(mib, &uname.Sysname[0], &n, nil, 0); err != nil { 266 return err 267 } 268 269 mib = []_C_int{CTL_KERN, KERN_HOSTNAME} 270 n = unsafe.Sizeof(uname.Nodename) 271 if err := sysctl(mib, &uname.Nodename[0], &n, nil, 0); err != nil { 272 return err 273 } 274 275 mib = []_C_int{CTL_KERN, KERN_OSRELEASE} 276 n = unsafe.Sizeof(uname.Release) 277 if err := sysctl(mib, &uname.Release[0], &n, nil, 0); err != nil { 278 return err 279 } 280 281 mib = []_C_int{CTL_KERN, KERN_VERSION} 282 n = unsafe.Sizeof(uname.Version) 283 if err := sysctl(mib, &uname.Version[0], &n, nil, 0); err != nil { 284 return err 285 } 286 287 // The version might have newlines or tabs in it, convert them to 288 // spaces. 289 for i, b := range uname.Version { 290 if b == '\n' || b == '\t' { 291 if i == len(uname.Version)-1 { 292 uname.Version[i] = 0 293 } else { 294 uname.Version[i] = ' ' 295 } 296 } 297 } 298 299 mib = []_C_int{CTL_HW, HW_MACHINE} 300 n = unsafe.Sizeof(uname.Machine) 301 if err := sysctl(mib, &uname.Machine[0], &n, nil, 0); err != nil { 302 return err 303 } 304 305 return nil 306 } 307 308 /* 309 * Exposed directly 310 */ 311 //sys Access(path string, mode uint32) (err error) 312 //sys Adjtime(delta *Timeval, olddelta *Timeval) (err error) 313 //sys Chdir(path string) (err error) 314 //sys Chflags(path string, flags int) (err error) 315 //sys Chmod(path string, mode uint32) (err error) 316 //sys Chown(path string, uid int, gid int) (err error) 317 //sys Chroot(path string) (err error) 318 //sys Close(fd int) (err error) 319 //sys Dup(fd int) (nfd int, err error) 320 //sys Dup2(from int, to int) (err error) 321 //sys Exchangedata(path1 string, path2 string, options int) (err error) 322 //sys Exit(code int) 323 //sys Faccessat(dirfd int, path string, mode uint32, flags int) (err error) 324 //sys Fchdir(fd int) (err error) 325 //sys Fchflags(fd int, flags int) (err error) 326 //sys Fchmod(fd int, mode uint32) (err error) 327 //sys Fchmodat(dirfd int, path string, mode uint32, flags int) (err error) 328 //sys Fchown(fd int, uid int, gid int) (err error) 329 //sys Fchownat(dirfd int, path string, uid int, gid int, flags int) (err error) 330 //sys Flock(fd int, how int) (err error) 331 //sys Fpathconf(fd int, name int) (val int, err error) 332 //sys Fstat(fd int, stat *Stat_t) (err error) = SYS_FSTAT64 333 //sys Fstatat(fd int, path string, stat *Stat_t, flags int) (err error) = SYS_FSTATAT64 334 //sys Fstatfs(fd int, stat *Statfs_t) (err error) = SYS_FSTATFS64 335 //sys Fsync(fd int) (err error) 336 //sys Ftruncate(fd int, length int64) (err error) 337 //sys Getdirentries(fd int, buf []byte, basep *uintptr) (n int, err error) = SYS_GETDIRENTRIES64 338 //sys Getdtablesize() (size int) 339 //sysnb Getegid() (egid int) 340 //sysnb Geteuid() (uid int) 341 //sysnb Getgid() (gid int) 342 //sysnb Getpgid(pid int) (pgid int, err error) 343 //sysnb Getpgrp() (pgrp int) 344 //sysnb Getpid() (pid int) 345 //sysnb Getppid() (ppid int) 346 //sys Getpriority(which int, who int) (prio int, err error) 347 //sysnb Getrlimit(which int, lim *Rlimit) (err error) 348 //sysnb Getrusage(who int, rusage *Rusage) (err error) 349 //sysnb Getsid(pid int) (sid int, err error) 350 //sysnb Getuid() (uid int) 351 //sysnb Issetugid() (tainted bool) 352 //sys Kqueue() (fd int, err error) 353 //sys Lchown(path string, uid int, gid int) (err error) 354 //sys Link(path string, link string) (err error) 355 //sys Linkat(pathfd int, path string, linkfd int, link string, flags int) (err error) 356 //sys Listen(s int, backlog int) (err error) 357 //sys Lstat(path string, stat *Stat_t) (err error) = SYS_LSTAT64 358 //sys Mkdir(path string, mode uint32) (err error) 359 //sys Mkdirat(dirfd int, path string, mode uint32) (err error) 360 //sys Mkfifo(path string, mode uint32) (err error) 361 //sys Mknod(path string, mode uint32, dev int) (err error) 362 //sys Open(path string, mode int, perm uint32) (fd int, err error) 363 //sys Openat(dirfd int, path string, mode int, perm uint32) (fd int, err error) 364 //sys Pathconf(path string, name int) (val int, err error) 365 //sys Pread(fd int, p []byte, offset int64) (n int, err error) 366 //sys Pwrite(fd int, p []byte, offset int64) (n int, err error) 367 //sys read(fd int, p []byte) (n int, err error) 368 //sys Readlink(path string, buf []byte) (n int, err error) 369 //sys Readlinkat(dirfd int, path string, buf []byte) (n int, err error) 370 //sys Rename(from string, to string) (err error) 371 //sys Renameat(fromfd int, from string, tofd int, to string) (err error) 372 //sys Revoke(path string) (err error) 373 //sys Rmdir(path string) (err error) 374 //sys Seek(fd int, offset int64, whence int) (newoffset int64, err error) = SYS_LSEEK 375 //sys Select(n int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (err error) 376 //sys Setegid(egid int) (err error) 377 //sysnb Seteuid(euid int) (err error) 378 //sysnb Setgid(gid int) (err error) 379 //sys Setlogin(name string) (err error) 380 //sysnb Setpgid(pid int, pgid int) (err error) 381 //sys Setpriority(which int, who int, prio int) (err error) 382 //sys Setprivexec(flag int) (err error) 383 //sysnb Setregid(rgid int, egid int) (err error) 384 //sysnb Setreuid(ruid int, euid int) (err error) 385 //sysnb Setrlimit(which int, lim *Rlimit) (err error) 386 //sysnb Setsid() (pid int, err error) 387 //sysnb Settimeofday(tp *Timeval) (err error) 388 //sysnb Setuid(uid int) (err error) 389 //sys Stat(path string, stat *Stat_t) (err error) = SYS_STAT64 390 //sys Statfs(path string, stat *Statfs_t) (err error) = SYS_STATFS64 391 //sys Symlink(path string, link string) (err error) 392 //sys Symlinkat(oldpath string, newdirfd int, newpath string) (err error) 393 //sys Sync() (err error) 394 //sys Truncate(path string, length int64) (err error) 395 //sys Umask(newmask int) (oldmask int) 396 //sys Undelete(path string) (err error) 397 //sys Unlink(path string) (err error) 398 //sys Unlinkat(dirfd int, path string, flags int) (err error) 399 //sys Unmount(path string, flags int) (err error) 400 //sys write(fd int, p []byte) (n int, err error) 401 //sys mmap(addr uintptr, length uintptr, prot int, flag int, fd int, pos int64) (ret uintptr, err error) 402 //sys munmap(addr uintptr, length uintptr) (err error) 403 //sys readlen(fd int, buf *byte, nbuf int) (n int, err error) = SYS_READ 404 //sys writelen(fd int, buf *byte, nbuf int) (n int, err error) = SYS_WRITE 405 406 /* 407 * Unimplemented 408 */ 409 // Profil 410 // Sigaction 411 // Sigprocmask 412 // Getlogin 413 // Sigpending 414 // Sigaltstack 415 // Ioctl 416 // Reboot 417 // Execve 418 // Vfork 419 // Sbrk 420 // Sstk 421 // Ovadvise 422 // Mincore 423 // Setitimer 424 // Swapon 425 // Select 426 // Sigsuspend 427 // Readv 428 // Writev 429 // Nfssvc 430 // Getfh 431 // Quotactl 432 // Mount 433 // Csops 434 // Waitid 435 // Add_profil 436 // Kdebug_trace 437 // Sigreturn 438 // Atsocket 439 // Kqueue_from_portset_np 440 // Kqueue_portset 441 // Getattrlist 442 // Setattrlist 443 // Getdirentriesattr 444 // Searchfs 445 // Delete 446 // Copyfile 447 // Watchevent 448 // Waitevent 449 // Modwatch 450 // Getxattr 451 // Fgetxattr 452 // Setxattr 453 // Fsetxattr 454 // Removexattr 455 // Fremovexattr 456 // Listxattr 457 // Flistxattr 458 // Fsctl 459 // Initgroups 460 // Posix_spawn 461 // Nfsclnt 462 // Fhopen 463 // Minherit 464 // Semsys 465 // Msgsys 466 // Shmsys 467 // Semctl 468 // Semget 469 // Semop 470 // Msgctl 471 // Msgget 472 // Msgsnd 473 // Msgrcv 474 // Shmat 475 // Shmctl 476 // Shmdt 477 // Shmget 478 // Shm_open 479 // Shm_unlink 480 // Sem_open 481 // Sem_close 482 // Sem_unlink 483 // Sem_wait 484 // Sem_trywait 485 // Sem_post 486 // Sem_getvalue 487 // Sem_init 488 // Sem_destroy 489 // Open_extended 490 // Umask_extended 491 // Stat_extended 492 // Lstat_extended 493 // Fstat_extended 494 // Chmod_extended 495 // Fchmod_extended 496 // Access_extended 497 // Settid 498 // Gettid 499 // Setsgroups 500 // Getsgroups 501 // Setwgroups 502 // Getwgroups 503 // Mkfifo_extended 504 // Mkdir_extended 505 // Identitysvc 506 // Shared_region_check_np 507 // Shared_region_map_np 508 // __pthread_mutex_destroy 509 // __pthread_mutex_init 510 // __pthread_mutex_lock 511 // __pthread_mutex_trylock 512 // __pthread_mutex_unlock 513 // __pthread_cond_init 514 // __pthread_cond_destroy 515 // __pthread_cond_broadcast 516 // __pthread_cond_signal 517 // Setsid_with_pid 518 // __pthread_cond_timedwait 519 // Aio_fsync 520 // Aio_return 521 // Aio_suspend 522 // Aio_cancel 523 // Aio_error 524 // Aio_read 525 // Aio_write 526 // Lio_listio 527 // __pthread_cond_wait 528 // Iopolicysys 529 // __pthread_kill 530 // __pthread_sigmask 531 // __sigwait 532 // __disable_threadsignal 533 // __pthread_markcancel 534 // __pthread_canceled 535 // __semwait_signal 536 // Proc_info 537 // sendfile 538 // Stat64_extended 539 // Lstat64_extended 540 // Fstat64_extended 541 // __pthread_chdir 542 // __pthread_fchdir 543 // Audit 544 // Auditon 545 // Getauid 546 // Setauid 547 // Getaudit 548 // Setaudit 549 // Getaudit_addr 550 // Setaudit_addr 551 // Auditctl 552 // Bsdthread_create 553 // Bsdthread_terminate 554 // Stack_snapshot 555 // Bsdthread_register 556 // Workq_open 557 // Workq_ops 558 // __mac_execve 559 // __mac_syscall 560 // __mac_get_file 561 // __mac_set_file 562 // __mac_get_link 563 // __mac_set_link 564 // __mac_get_proc 565 // __mac_set_proc 566 // __mac_get_fd 567 // __mac_set_fd 568 // __mac_get_pid 569 // __mac_get_lcid 570 // __mac_get_lctx 571 // __mac_set_lctx 572 // Setlcid 573 // Read_nocancel 574 // Write_nocancel 575 // Open_nocancel 576 // Close_nocancel 577 // Wait4_nocancel 578 // Recvmsg_nocancel 579 // Sendmsg_nocancel 580 // Recvfrom_nocancel 581 // Accept_nocancel 582 // Fcntl_nocancel 583 // Select_nocancel 584 // Fsync_nocancel 585 // Connect_nocancel 586 // Sigsuspend_nocancel 587 // Readv_nocancel 588 // Writev_nocancel 589 // Sendto_nocancel 590 // Pread_nocancel 591 // Pwrite_nocancel 592 // Waitid_nocancel 593 // Poll_nocancel 594 // Msgsnd_nocancel 595 // Msgrcv_nocancel 596 // Sem_wait_nocancel 597 // Aio_suspend_nocancel 598 // __sigwait_nocancel 599 // __semwait_signal_nocancel 600 // __mac_mount 601 // __mac_get_mount 602 // __mac_getfsstat