github.com/Kalvelign/golang-windows-sys-lib@v0.0.0-20221121121202-63da651435e1/unix/syscall_aix.go (about) 1 // Copyright 2018 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 //go:build aix 6 // +build aix 7 8 // Aix system calls. 9 // This file is compiled as ordinary Go code, 10 // but it is also input to mksyscall, 11 // which parses the //sys lines and generates system call stubs. 12 // Note that sometimes we use a lowercase //sys name and 13 // wrap it in our own nicer implementation. 14 15 package unix 16 17 import "unsafe" 18 19 /* 20 * Wrapped 21 */ 22 23 func Access(path string, mode uint32) (err error) { 24 return Faccessat(AT_FDCWD, path, mode, 0) 25 } 26 27 func Chmod(path string, mode uint32) (err error) { 28 return Fchmodat(AT_FDCWD, path, mode, 0) 29 } 30 31 func Chown(path string, uid int, gid int) (err error) { 32 return Fchownat(AT_FDCWD, path, uid, gid, 0) 33 } 34 35 func Creat(path string, mode uint32) (fd int, err error) { 36 return Open(path, O_CREAT|O_WRONLY|O_TRUNC, mode) 37 } 38 39 //sys utimes(path string, times *[2]Timeval) (err error) 40 41 func Utimes(path string, tv []Timeval) error { 42 if len(tv) != 2 { 43 return EINVAL 44 } 45 return utimes(path, (*[2]Timeval)(unsafe.Pointer(&tv[0]))) 46 } 47 48 //sys utimensat(dirfd int, path string, times *[2]Timespec, flag int) (err error) 49 50 func UtimesNano(path string, ts []Timespec) error { 51 if len(ts) != 2 { 52 return EINVAL 53 } 54 return utimensat(AT_FDCWD, path, (*[2]Timespec)(unsafe.Pointer(&ts[0])), 0) 55 } 56 57 func UtimesNanoAt(dirfd int, path string, ts []Timespec, flags int) error { 58 if ts == nil { 59 return utimensat(dirfd, path, nil, flags) 60 } 61 if len(ts) != 2 { 62 return EINVAL 63 } 64 return utimensat(dirfd, path, (*[2]Timespec)(unsafe.Pointer(&ts[0])), flags) 65 } 66 67 func (sa *SockaddrInet4) sockaddr() (unsafe.Pointer, _Socklen, error) { 68 if sa.Port < 0 || sa.Port > 0xFFFF { 69 return nil, 0, EINVAL 70 } 71 sa.raw.Family = AF_INET 72 p := (*[2]byte)(unsafe.Pointer(&sa.raw.Port)) 73 p[0] = byte(sa.Port >> 8) 74 p[1] = byte(sa.Port) 75 sa.raw.Addr = sa.Addr 76 return unsafe.Pointer(&sa.raw), SizeofSockaddrInet4, nil 77 } 78 79 func (sa *SockaddrInet6) sockaddr() (unsafe.Pointer, _Socklen, error) { 80 if sa.Port < 0 || sa.Port > 0xFFFF { 81 return nil, 0, EINVAL 82 } 83 sa.raw.Family = AF_INET6 84 p := (*[2]byte)(unsafe.Pointer(&sa.raw.Port)) 85 p[0] = byte(sa.Port >> 8) 86 p[1] = byte(sa.Port) 87 sa.raw.Scope_id = sa.ZoneId 88 sa.raw.Addr = sa.Addr 89 return unsafe.Pointer(&sa.raw), SizeofSockaddrInet6, nil 90 } 91 92 func (sa *SockaddrUnix) sockaddr() (unsafe.Pointer, _Socklen, error) { 93 name := sa.Name 94 n := len(name) 95 if n > len(sa.raw.Path) { 96 return nil, 0, EINVAL 97 } 98 if n == len(sa.raw.Path) && name[0] != '@' { 99 return nil, 0, EINVAL 100 } 101 sa.raw.Family = AF_UNIX 102 for i := 0; i < n; i++ { 103 sa.raw.Path[i] = uint8(name[i]) 104 } 105 // length is family (uint16), name, NUL. 106 sl := _Socklen(2) 107 if n > 0 { 108 sl += _Socklen(n) + 1 109 } 110 if sa.raw.Path[0] == '@' { 111 sa.raw.Path[0] = 0 112 // Don't count trailing NUL for abstract address. 113 sl-- 114 } 115 116 return unsafe.Pointer(&sa.raw), sl, nil 117 } 118 119 func Getsockname(fd int) (sa Sockaddr, err error) { 120 var rsa RawSockaddrAny 121 var len _Socklen = SizeofSockaddrAny 122 if err = getsockname(fd, &rsa, &len); err != nil { 123 return 124 } 125 return anyToSockaddr(fd, &rsa) 126 } 127 128 //sys getcwd(buf []byte) (err error) 129 130 const ImplementsGetwd = true 131 132 func Getwd() (ret string, err error) { 133 for len := uint64(4096); ; len *= 2 { 134 b := make([]byte, len) 135 err := getcwd(b) 136 if err == nil { 137 i := 0 138 for b[i] != 0 { 139 i++ 140 } 141 return string(b[0:i]), nil 142 } 143 if err != ERANGE { 144 return "", err 145 } 146 } 147 } 148 149 func Getcwd(buf []byte) (n int, err error) { 150 err = getcwd(buf) 151 if err == nil { 152 i := 0 153 for buf[i] != 0 { 154 i++ 155 } 156 n = i + 1 157 } 158 return 159 } 160 161 func Getgroups() (gids []int, err error) { 162 n, err := getgroups(0, nil) 163 if err != nil { 164 return nil, err 165 } 166 if n == 0 { 167 return nil, nil 168 } 169 170 // Sanity check group count. Max is 16 on BSD. 171 if n < 0 || n > 1000 { 172 return nil, EINVAL 173 } 174 175 a := make([]_Gid_t, n) 176 n, err = getgroups(n, &a[0]) 177 if err != nil { 178 return nil, err 179 } 180 gids = make([]int, n) 181 for i, v := range a[0:n] { 182 gids[i] = int(v) 183 } 184 return 185 } 186 187 func Setgroups(gids []int) (err error) { 188 if len(gids) == 0 { 189 return setgroups(0, nil) 190 } 191 192 a := make([]_Gid_t, len(gids)) 193 for i, v := range gids { 194 a[i] = _Gid_t(v) 195 } 196 return setgroups(len(a), &a[0]) 197 } 198 199 /* 200 * Socket 201 */ 202 203 //sys accept(s int, rsa *RawSockaddrAny, addrlen *_Socklen) (fd int, err error) 204 205 func Accept(fd int) (nfd int, sa Sockaddr, err error) { 206 var rsa RawSockaddrAny 207 var len _Socklen = SizeofSockaddrAny 208 nfd, err = accept(fd, &rsa, &len) 209 if nfd == -1 { 210 return 211 } 212 sa, err = anyToSockaddr(fd, &rsa) 213 if err != nil { 214 Close(nfd) 215 nfd = 0 216 } 217 return 218 } 219 220 func recvmsgRaw(fd int, iov []Iovec, oob []byte, flags int, rsa *RawSockaddrAny) (n, oobn int, recvflags int, err error) { 221 var msg Msghdr 222 msg.Name = (*byte)(unsafe.Pointer(rsa)) 223 msg.Namelen = uint32(SizeofSockaddrAny) 224 var dummy byte 225 if len(oob) > 0 { 226 // receive at least one normal byte 227 if emptyIovecs(iov) { 228 var iova [1]Iovec 229 iova[0].Base = &dummy 230 iova[0].SetLen(1) 231 iov = iova[:] 232 } 233 msg.Control = (*byte)(unsafe.Pointer(&oob[0])) 234 msg.SetControllen(len(oob)) 235 } 236 if len(iov) > 0 { 237 msg.Iov = &iov[0] 238 msg.SetIovlen(len(iov)) 239 } 240 if n, err = recvmsg(fd, &msg, flags); n == -1 { 241 return 242 } 243 oobn = int(msg.Controllen) 244 recvflags = int(msg.Flags) 245 return 246 } 247 248 func sendmsgN(fd int, iov []Iovec, oob []byte, ptr unsafe.Pointer, salen _Socklen, flags int) (n int, err error) { 249 var msg Msghdr 250 msg.Name = (*byte)(unsafe.Pointer(ptr)) 251 msg.Namelen = uint32(salen) 252 var dummy byte 253 var empty bool 254 if len(oob) > 0 { 255 // send at least one normal byte 256 empty = emptyIovecs(iov) 257 if empty { 258 var iova [1]Iovec 259 iova[0].Base = &dummy 260 iova[0].SetLen(1) 261 iov = iova[:] 262 } 263 msg.Control = (*byte)(unsafe.Pointer(&oob[0])) 264 msg.SetControllen(len(oob)) 265 } 266 if len(iov) > 0 { 267 msg.Iov = &iov[0] 268 msg.SetIovlen(len(iov)) 269 } 270 if n, err = sendmsg(fd, &msg, flags); err != nil { 271 return 0, err 272 } 273 if len(oob) > 0 && empty { 274 n = 0 275 } 276 return n, nil 277 } 278 279 func anyToSockaddr(fd int, rsa *RawSockaddrAny) (Sockaddr, error) { 280 switch rsa.Addr.Family { 281 282 case AF_UNIX: 283 pp := (*RawSockaddrUnix)(unsafe.Pointer(rsa)) 284 sa := new(SockaddrUnix) 285 286 // Some versions of AIX have a bug in getsockname (see IV78655). 287 // We can't rely on sa.Len being set correctly. 288 n := SizeofSockaddrUnix - 3 // subtract leading Family, Len, terminating NUL. 289 for i := 0; i < n; i++ { 290 if pp.Path[i] == 0 { 291 n = i 292 break 293 } 294 } 295 296 bytes := (*[len(pp.Path)]byte)(unsafe.Pointer(&pp.Path[0]))[0:n] 297 sa.Name = string(bytes) 298 return sa, nil 299 300 case AF_INET: 301 pp := (*RawSockaddrInet4)(unsafe.Pointer(rsa)) 302 sa := new(SockaddrInet4) 303 p := (*[2]byte)(unsafe.Pointer(&pp.Port)) 304 sa.Port = int(p[0])<<8 + int(p[1]) 305 sa.Addr = pp.Addr 306 return sa, nil 307 308 case AF_INET6: 309 pp := (*RawSockaddrInet6)(unsafe.Pointer(rsa)) 310 sa := new(SockaddrInet6) 311 p := (*[2]byte)(unsafe.Pointer(&pp.Port)) 312 sa.Port = int(p[0])<<8 + int(p[1]) 313 sa.ZoneId = pp.Scope_id 314 sa.Addr = pp.Addr 315 return sa, nil 316 } 317 return nil, EAFNOSUPPORT 318 } 319 320 func Gettimeofday(tv *Timeval) (err error) { 321 err = gettimeofday(tv, nil) 322 return 323 } 324 325 func Sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) { 326 if raceenabled { 327 raceReleaseMerge(unsafe.Pointer(&ioSync)) 328 } 329 return sendfile(outfd, infd, offset, count) 330 } 331 332 // TODO 333 func sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) { 334 return -1, ENOSYS 335 } 336 337 func direntIno(buf []byte) (uint64, bool) { 338 return readInt(buf, unsafe.Offsetof(Dirent{}.Ino), unsafe.Sizeof(Dirent{}.Ino)) 339 } 340 341 func direntReclen(buf []byte) (uint64, bool) { 342 return readInt(buf, unsafe.Offsetof(Dirent{}.Reclen), unsafe.Sizeof(Dirent{}.Reclen)) 343 } 344 345 func direntNamlen(buf []byte) (uint64, bool) { 346 reclen, ok := direntReclen(buf) 347 if !ok { 348 return 0, false 349 } 350 return reclen - uint64(unsafe.Offsetof(Dirent{}.Name)), true 351 } 352 353 //sys getdirent(fd int, buf []byte) (n int, err error) 354 355 func Getdents(fd int, buf []byte) (n int, err error) { 356 return getdirent(fd, buf) 357 } 358 359 //sys wait4(pid Pid_t, status *_C_int, options int, rusage *Rusage) (wpid Pid_t, err error) 360 361 func Wait4(pid int, wstatus *WaitStatus, options int, rusage *Rusage) (wpid int, err error) { 362 var status _C_int 363 var r Pid_t 364 err = ERESTART 365 // AIX wait4 may return with ERESTART errno, while the processus is still 366 // active. 367 for err == ERESTART { 368 r, err = wait4(Pid_t(pid), &status, options, rusage) 369 } 370 wpid = int(r) 371 if wstatus != nil { 372 *wstatus = WaitStatus(status) 373 } 374 return 375 } 376 377 /* 378 * Wait 379 */ 380 381 type WaitStatus uint32 382 383 func (w WaitStatus) Stopped() bool { return w&0x40 != 0 } 384 func (w WaitStatus) StopSignal() Signal { 385 if !w.Stopped() { 386 return -1 387 } 388 return Signal(w>>8) & 0xFF 389 } 390 391 func (w WaitStatus) Exited() bool { return w&0xFF == 0 } 392 func (w WaitStatus) ExitStatus() int { 393 if !w.Exited() { 394 return -1 395 } 396 return int((w >> 8) & 0xFF) 397 } 398 399 func (w WaitStatus) Signaled() bool { return w&0x40 == 0 && w&0xFF != 0 } 400 func (w WaitStatus) Signal() Signal { 401 if !w.Signaled() { 402 return -1 403 } 404 return Signal(w>>16) & 0xFF 405 } 406 407 func (w WaitStatus) Continued() bool { return w&0x01000000 != 0 } 408 409 func (w WaitStatus) CoreDump() bool { return w&0x80 == 0x80 } 410 411 func (w WaitStatus) TrapCause() int { return -1 } 412 413 //sys ioctl(fd int, req uint, arg uintptr) (err error) 414 415 // fcntl must never be called with cmd=F_DUP2FD because it doesn't work on AIX 416 // There is no way to create a custom fcntl and to keep //sys fcntl easily, 417 // Therefore, the programmer must call dup2 instead of fcntl in this case. 418 419 // FcntlInt performs a fcntl syscall on fd with the provided command and argument. 420 //sys FcntlInt(fd uintptr, cmd int, arg int) (r int,err error) = fcntl 421 422 // FcntlFlock performs a fcntl syscall for the F_GETLK, F_SETLK or F_SETLKW command. 423 //sys FcntlFlock(fd uintptr, cmd int, lk *Flock_t) (err error) = fcntl 424 425 //sys fcntl(fd int, cmd int, arg int) (val int, err error) 426 427 //sys fsyncRange(fd int, how int, start int64, length int64) (err error) = fsync_range 428 429 func Fsync(fd int) error { 430 return fsyncRange(fd, O_SYNC, 0, 0) 431 } 432 433 /* 434 * Direct access 435 */ 436 437 //sys Acct(path string) (err error) 438 //sys Chdir(path string) (err error) 439 //sys Chroot(path string) (err error) 440 //sys Close(fd int) (err error) 441 //sys Dup(oldfd int) (fd int, err error) 442 //sys Exit(code int) 443 //sys Faccessat(dirfd int, path string, mode uint32, flags int) (err error) 444 //sys Fchdir(fd int) (err error) 445 //sys Fchmod(fd int, mode uint32) (err error) 446 //sys Fchmodat(dirfd int, path string, mode uint32, flags int) (err error) 447 //sys Fchownat(dirfd int, path string, uid int, gid int, flags int) (err error) 448 //sys Fdatasync(fd int) (err error) 449 // readdir_r 450 //sysnb Getpgid(pid int) (pgid int, err error) 451 452 //sys Getpgrp() (pid int) 453 454 //sysnb Getpid() (pid int) 455 //sysnb Getppid() (ppid int) 456 //sys Getpriority(which int, who int) (prio int, err error) 457 //sysnb Getrusage(who int, rusage *Rusage) (err error) 458 //sysnb Getsid(pid int) (sid int, err error) 459 //sysnb Kill(pid int, sig Signal) (err error) 460 //sys Klogctl(typ int, buf []byte) (n int, err error) = syslog 461 //sys Mkdir(dirfd int, path string, mode uint32) (err error) 462 //sys Mkdirat(dirfd int, path string, mode uint32) (err error) 463 //sys Mkfifo(path string, mode uint32) (err error) 464 //sys Mknod(path string, mode uint32, dev int) (err error) 465 //sys Mknodat(dirfd int, path string, mode uint32, dev int) (err error) 466 //sys Nanosleep(time *Timespec, leftover *Timespec) (err error) 467 //sys Open(path string, mode int, perm uint32) (fd int, err error) = open64 468 //sys Openat(dirfd int, path string, flags int, mode uint32) (fd int, err error) 469 //sys read(fd int, p []byte) (n int, err error) 470 //sys Readlink(path string, buf []byte) (n int, err error) 471 //sys Renameat(olddirfd int, oldpath string, newdirfd int, newpath string) (err error) 472 //sys Setdomainname(p []byte) (err error) 473 //sys Sethostname(p []byte) (err error) 474 //sysnb Setpgid(pid int, pgid int) (err error) 475 //sysnb Setsid() (pid int, err error) 476 //sysnb Settimeofday(tv *Timeval) (err error) 477 478 //sys Setuid(uid int) (err error) 479 //sys Setgid(uid int) (err error) 480 481 //sys Setpriority(which int, who int, prio int) (err error) 482 //sys Statx(dirfd int, path string, flags int, mask int, stat *Statx_t) (err error) 483 //sys Sync() 484 //sysnb Times(tms *Tms) (ticks uintptr, err error) 485 //sysnb Umask(mask int) (oldmask int) 486 //sysnb Uname(buf *Utsname) (err error) 487 //sys Unlink(path string) (err error) 488 //sys Unlinkat(dirfd int, path string, flags int) (err error) 489 //sys Ustat(dev int, ubuf *Ustat_t) (err error) 490 //sys write(fd int, p []byte) (n int, err error) 491 //sys readlen(fd int, p *byte, np int) (n int, err error) = read 492 //sys writelen(fd int, p *byte, np int) (n int, err error) = write 493 494 //sys Dup2(oldfd int, newfd int) (err error) 495 //sys Fadvise(fd int, offset int64, length int64, advice int) (err error) = posix_fadvise64 496 //sys Fchown(fd int, uid int, gid int) (err error) 497 //sys fstat(fd int, stat *Stat_t) (err error) 498 //sys fstatat(dirfd int, path string, stat *Stat_t, flags int) (err error) = fstatat 499 //sys Fstatfs(fd int, buf *Statfs_t) (err error) 500 //sys Ftruncate(fd int, length int64) (err error) 501 //sysnb Getegid() (egid int) 502 //sysnb Geteuid() (euid int) 503 //sysnb Getgid() (gid int) 504 //sysnb Getuid() (uid int) 505 //sys Lchown(path string, uid int, gid int) (err error) 506 //sys Listen(s int, n int) (err error) 507 //sys lstat(path string, stat *Stat_t) (err error) 508 //sys Pause() (err error) 509 //sys pread(fd int, p []byte, offset int64) (n int, err error) = pread64 510 //sys pwrite(fd int, p []byte, offset int64) (n int, err error) = pwrite64 511 //sys Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, err error) 512 //sys Pselect(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timespec, sigmask *Sigset_t) (n int, err error) 513 //sysnb Setregid(rgid int, egid int) (err error) 514 //sysnb Setreuid(ruid int, euid int) (err error) 515 //sys Shutdown(fd int, how int) (err error) 516 //sys Splice(rfd int, roff *int64, wfd int, woff *int64, len int, flags int) (n int64, err error) 517 //sys stat(path string, statptr *Stat_t) (err error) 518 //sys Statfs(path string, buf *Statfs_t) (err error) 519 //sys Truncate(path string, length int64) (err error) 520 521 //sys bind(s int, addr unsafe.Pointer, addrlen _Socklen) (err error) 522 //sys connect(s int, addr unsafe.Pointer, addrlen _Socklen) (err error) 523 //sysnb getgroups(n int, list *_Gid_t) (nn int, err error) 524 //sysnb setgroups(n int, list *_Gid_t) (err error) 525 //sys getsockopt(s int, level int, name int, val unsafe.Pointer, vallen *_Socklen) (err error) 526 //sys setsockopt(s int, level int, name int, val unsafe.Pointer, vallen uintptr) (err error) 527 //sysnb socket(domain int, typ int, proto int) (fd int, err error) 528 //sysnb socketpair(domain int, typ int, proto int, fd *[2]int32) (err error) 529 //sysnb getpeername(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error) 530 //sysnb getsockname(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error) 531 //sys recvfrom(fd int, p []byte, flags int, from *RawSockaddrAny, fromlen *_Socklen) (n int, err error) 532 //sys sendto(s int, buf []byte, flags int, to unsafe.Pointer, addrlen _Socklen) (err error) 533 534 // In order to use msghdr structure with Control, Controllen, nrecvmsg and nsendmsg must be used. 535 //sys recvmsg(s int, msg *Msghdr, flags int) (n int, err error) = nrecvmsg 536 //sys sendmsg(s int, msg *Msghdr, flags int) (n int, err error) = nsendmsg 537 538 //sys munmap(addr uintptr, length uintptr) (err error) 539 540 var mapper = &mmapper{ 541 active: make(map[*byte][]byte), 542 mmap: mmap, 543 munmap: munmap, 544 } 545 546 func Mmap(fd int, offset int64, length int, prot int, flags int) (data []byte, err error) { 547 return mapper.Mmap(fd, offset, length, prot, flags) 548 } 549 550 func Munmap(b []byte) (err error) { 551 return mapper.Munmap(b) 552 } 553 554 //sys Madvise(b []byte, advice int) (err error) 555 //sys Mprotect(b []byte, prot int) (err error) 556 //sys Mlock(b []byte) (err error) 557 //sys Mlockall(flags int) (err error) 558 //sys Msync(b []byte, flags int) (err error) 559 //sys Munlock(b []byte) (err error) 560 //sys Munlockall() (err error) 561 562 //sysnb pipe(p *[2]_C_int) (err error) 563 564 func Pipe(p []int) (err error) { 565 if len(p) != 2 { 566 return EINVAL 567 } 568 var pp [2]_C_int 569 err = pipe(&pp) 570 if err == nil { 571 p[0] = int(pp[0]) 572 p[1] = int(pp[1]) 573 } 574 return 575 } 576 577 //sys poll(fds *PollFd, nfds int, timeout int) (n int, err error) 578 579 func Poll(fds []PollFd, timeout int) (n int, err error) { 580 if len(fds) == 0 { 581 return poll(nil, 0, timeout) 582 } 583 return poll(&fds[0], len(fds), timeout) 584 } 585 586 //sys gettimeofday(tv *Timeval, tzp *Timezone) (err error) 587 //sysnb Time(t *Time_t) (tt Time_t, err error) 588 //sys Utime(path string, buf *Utimbuf) (err error) 589 590 //sys Getsystemcfg(label int) (n uint64) 591 592 //sys umount(target string) (err error) 593 594 func Unmount(target string, flags int) (err error) { 595 if flags != 0 { 596 // AIX doesn't have any flags for umount. 597 return ENOSYS 598 } 599 return umount(target) 600 }