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comparison vendor/golang.org/x/sys/unix/syscall_aix.go @ 66:787b5ee0289d draft

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Use vendored modules Signed-off-by: Izuru Yakumo <yakumo.izuru@chaotic.ninja>
author yakumo.izuru
date Sun, 23 Jul 2023 13:18:53 +0000
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children 4b79810863f6
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65:6d985efa0f7a 66:787b5ee0289d
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 // Recvmsg not implemented on AIX
222 return -1, -1, -1, ENOSYS
223 }
224
225 func sendmsgN(fd int, iov []Iovec, oob []byte, ptr unsafe.Pointer, salen _Socklen, flags int) (n int, err error) {
226 // SendmsgN not implemented on AIX
227 return -1, ENOSYS
228 }
229
230 func anyToSockaddr(fd int, rsa *RawSockaddrAny) (Sockaddr, error) {
231 switch rsa.Addr.Family {
232
233 case AF_UNIX:
234 pp := (*RawSockaddrUnix)(unsafe.Pointer(rsa))
235 sa := new(SockaddrUnix)
236
237 // Some versions of AIX have a bug in getsockname (see IV78655).
238 // We can't rely on sa.Len being set correctly.
239 n := SizeofSockaddrUnix - 3 // subtract leading Family, Len, terminating NUL.
240 for i := 0; i < n; i++ {
241 if pp.Path[i] == 0 {
242 n = i
243 break
244 }
245 }
246
247 bytes := (*[len(pp.Path)]byte)(unsafe.Pointer(&pp.Path[0]))[0:n]
248 sa.Name = string(bytes)
249 return sa, nil
250
251 case AF_INET:
252 pp := (*RawSockaddrInet4)(unsafe.Pointer(rsa))
253 sa := new(SockaddrInet4)
254 p := (*[2]byte)(unsafe.Pointer(&pp.Port))
255 sa.Port = int(p[0])<<8 + int(p[1])
256 sa.Addr = pp.Addr
257 return sa, nil
258
259 case AF_INET6:
260 pp := (*RawSockaddrInet6)(unsafe.Pointer(rsa))
261 sa := new(SockaddrInet6)
262 p := (*[2]byte)(unsafe.Pointer(&pp.Port))
263 sa.Port = int(p[0])<<8 + int(p[1])
264 sa.ZoneId = pp.Scope_id
265 sa.Addr = pp.Addr
266 return sa, nil
267 }
268 return nil, EAFNOSUPPORT
269 }
270
271 func Gettimeofday(tv *Timeval) (err error) {
272 err = gettimeofday(tv, nil)
273 return
274 }
275
276 func Sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) {
277 if raceenabled {
278 raceReleaseMerge(unsafe.Pointer(&ioSync))
279 }
280 return sendfile(outfd, infd, offset, count)
281 }
282
283 // TODO
284 func sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) {
285 return -1, ENOSYS
286 }
287
288 func direntIno(buf []byte) (uint64, bool) {
289 return readInt(buf, unsafe.Offsetof(Dirent{}.Ino), unsafe.Sizeof(Dirent{}.Ino))
290 }
291
292 func direntReclen(buf []byte) (uint64, bool) {
293 return readInt(buf, unsafe.Offsetof(Dirent{}.Reclen), unsafe.Sizeof(Dirent{}.Reclen))
294 }
295
296 func direntNamlen(buf []byte) (uint64, bool) {
297 reclen, ok := direntReclen(buf)
298 if !ok {
299 return 0, false
300 }
301 return reclen - uint64(unsafe.Offsetof(Dirent{}.Name)), true
302 }
303
304 //sys getdirent(fd int, buf []byte) (n int, err error)
305
306 func Getdents(fd int, buf []byte) (n int, err error) {
307 return getdirent(fd, buf)
308 }
309
310 //sys wait4(pid Pid_t, status *_C_int, options int, rusage *Rusage) (wpid Pid_t, err error)
311
312 func Wait4(pid int, wstatus *WaitStatus, options int, rusage *Rusage) (wpid int, err error) {
313 var status _C_int
314 var r Pid_t
315 err = ERESTART
316 // AIX wait4 may return with ERESTART errno, while the processus is still
317 // active.
318 for err == ERESTART {
319 r, err = wait4(Pid_t(pid), &status, options, rusage)
320 }
321 wpid = int(r)
322 if wstatus != nil {
323 *wstatus = WaitStatus(status)
324 }
325 return
326 }
327
328 /*
329 * Wait
330 */
331
332 type WaitStatus uint32
333
334 func (w WaitStatus) Stopped() bool { return w&0x40 != 0 }
335 func (w WaitStatus) StopSignal() Signal {
336 if !w.Stopped() {
337 return -1
338 }
339 return Signal(w>>8) & 0xFF
340 }
341
342 func (w WaitStatus) Exited() bool { return w&0xFF == 0 }
343 func (w WaitStatus) ExitStatus() int {
344 if !w.Exited() {
345 return -1
346 }
347 return int((w >> 8) & 0xFF)
348 }
349
350 func (w WaitStatus) Signaled() bool { return w&0x40 == 0 && w&0xFF != 0 }
351 func (w WaitStatus) Signal() Signal {
352 if !w.Signaled() {
353 return -1
354 }
355 return Signal(w>>16) & 0xFF
356 }
357
358 func (w WaitStatus) Continued() bool { return w&0x01000000 != 0 }
359
360 func (w WaitStatus) CoreDump() bool { return w&0x80 == 0x80 }
361
362 func (w WaitStatus) TrapCause() int { return -1 }
363
364 //sys ioctl(fd int, req uint, arg uintptr) (err error)
365
366 // fcntl must never be called with cmd=F_DUP2FD because it doesn't work on AIX
367 // There is no way to create a custom fcntl and to keep //sys fcntl easily,
368 // Therefore, the programmer must call dup2 instead of fcntl in this case.
369
370 // FcntlInt performs a fcntl syscall on fd with the provided command and argument.
371 //sys FcntlInt(fd uintptr, cmd int, arg int) (r int,err error) = fcntl
372
373 // FcntlFlock performs a fcntl syscall for the F_GETLK, F_SETLK or F_SETLKW command.
374 //sys FcntlFlock(fd uintptr, cmd int, lk *Flock_t) (err error) = fcntl
375
376 //sys fcntl(fd int, cmd int, arg int) (val int, err error)
377
378 //sys fsyncRange(fd int, how int, start int64, length int64) (err error) = fsync_range
379
380 func Fsync(fd int) error {
381 return fsyncRange(fd, O_SYNC, 0, 0)
382 }
383
384 /*
385 * Direct access
386 */
387
388 //sys Acct(path string) (err error)
389 //sys Chdir(path string) (err error)
390 //sys Chroot(path string) (err error)
391 //sys Close(fd int) (err error)
392 //sys Dup(oldfd int) (fd int, err error)
393 //sys Exit(code int)
394 //sys Faccessat(dirfd int, path string, mode uint32, flags int) (err error)
395 //sys Fchdir(fd int) (err error)
396 //sys Fchmod(fd int, mode uint32) (err error)
397 //sys Fchmodat(dirfd int, path string, mode uint32, flags int) (err error)
398 //sys Fchownat(dirfd int, path string, uid int, gid int, flags int) (err error)
399 //sys Fdatasync(fd int) (err error)
400 // readdir_r
401 //sysnb Getpgid(pid int) (pgid int, err error)
402
403 //sys Getpgrp() (pid int)
404
405 //sysnb Getpid() (pid int)
406 //sysnb Getppid() (ppid int)
407 //sys Getpriority(which int, who int) (prio int, err error)
408 //sysnb Getrusage(who int, rusage *Rusage) (err error)
409 //sysnb Getsid(pid int) (sid int, err error)
410 //sysnb Kill(pid int, sig Signal) (err error)
411 //sys Klogctl(typ int, buf []byte) (n int, err error) = syslog
412 //sys Mkdir(dirfd int, path string, mode uint32) (err error)
413 //sys Mkdirat(dirfd int, path string, mode uint32) (err error)
414 //sys Mkfifo(path string, mode uint32) (err error)
415 //sys Mknod(path string, mode uint32, dev int) (err error)
416 //sys Mknodat(dirfd int, path string, mode uint32, dev int) (err error)
417 //sys Nanosleep(time *Timespec, leftover *Timespec) (err error)
418 //sys Open(path string, mode int, perm uint32) (fd int, err error) = open64
419 //sys Openat(dirfd int, path string, flags int, mode uint32) (fd int, err error)
420 //sys read(fd int, p []byte) (n int, err error)
421 //sys Readlink(path string, buf []byte) (n int, err error)
422 //sys Renameat(olddirfd int, oldpath string, newdirfd int, newpath string) (err error)
423 //sys Setdomainname(p []byte) (err error)
424 //sys Sethostname(p []byte) (err error)
425 //sysnb Setpgid(pid int, pgid int) (err error)
426 //sysnb Setsid() (pid int, err error)
427 //sysnb Settimeofday(tv *Timeval) (err error)
428
429 //sys Setuid(uid int) (err error)
430 //sys Setgid(uid int) (err error)
431
432 //sys Setpriority(which int, who int, prio int) (err error)
433 //sys Statx(dirfd int, path string, flags int, mask int, stat *Statx_t) (err error)
434 //sys Sync()
435 //sysnb Times(tms *Tms) (ticks uintptr, err error)
436 //sysnb Umask(mask int) (oldmask int)
437 //sysnb Uname(buf *Utsname) (err error)
438 //sys Unlink(path string) (err error)
439 //sys Unlinkat(dirfd int, path string, flags int) (err error)
440 //sys Ustat(dev int, ubuf *Ustat_t) (err error)
441 //sys write(fd int, p []byte) (n int, err error)
442 //sys readlen(fd int, p *byte, np int) (n int, err error) = read
443 //sys writelen(fd int, p *byte, np int) (n int, err error) = write
444
445 //sys Dup2(oldfd int, newfd int) (err error)
446 //sys Fadvise(fd int, offset int64, length int64, advice int) (err error) = posix_fadvise64
447 //sys Fchown(fd int, uid int, gid int) (err error)
448 //sys fstat(fd int, stat *Stat_t) (err error)
449 //sys fstatat(dirfd int, path string, stat *Stat_t, flags int) (err error) = fstatat
450 //sys Fstatfs(fd int, buf *Statfs_t) (err error)
451 //sys Ftruncate(fd int, length int64) (err error)
452 //sysnb Getegid() (egid int)
453 //sysnb Geteuid() (euid int)
454 //sysnb Getgid() (gid int)
455 //sysnb Getuid() (uid int)
456 //sys Lchown(path string, uid int, gid int) (err error)
457 //sys Listen(s int, n int) (err error)
458 //sys lstat(path string, stat *Stat_t) (err error)
459 //sys Pause() (err error)
460 //sys pread(fd int, p []byte, offset int64) (n int, err error) = pread64
461 //sys pwrite(fd int, p []byte, offset int64) (n int, err error) = pwrite64
462 //sys Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, err error)
463 //sys Pselect(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timespec, sigmask *Sigset_t) (n int, err error)
464 //sysnb Setregid(rgid int, egid int) (err error)
465 //sysnb Setreuid(ruid int, euid int) (err error)
466 //sys Shutdown(fd int, how int) (err error)
467 //sys Splice(rfd int, roff *int64, wfd int, woff *int64, len int, flags int) (n int64, err error)
468 //sys stat(path string, statptr *Stat_t) (err error)
469 //sys Statfs(path string, buf *Statfs_t) (err error)
470 //sys Truncate(path string, length int64) (err error)
471
472 //sys bind(s int, addr unsafe.Pointer, addrlen _Socklen) (err error)
473 //sys connect(s int, addr unsafe.Pointer, addrlen _Socklen) (err error)
474 //sysnb getgroups(n int, list *_Gid_t) (nn int, err error)
475 //sysnb setgroups(n int, list *_Gid_t) (err error)
476 //sys getsockopt(s int, level int, name int, val unsafe.Pointer, vallen *_Socklen) (err error)
477 //sys setsockopt(s int, level int, name int, val unsafe.Pointer, vallen uintptr) (err error)
478 //sysnb socket(domain int, typ int, proto int) (fd int, err error)
479 //sysnb socketpair(domain int, typ int, proto int, fd *[2]int32) (err error)
480 //sysnb getpeername(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error)
481 //sysnb getsockname(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error)
482 //sys recvfrom(fd int, p []byte, flags int, from *RawSockaddrAny, fromlen *_Socklen) (n int, err error)
483 //sys sendto(s int, buf []byte, flags int, to unsafe.Pointer, addrlen _Socklen) (err error)
484
485 // In order to use msghdr structure with Control, Controllen, nrecvmsg and nsendmsg must be used.
486 //sys recvmsg(s int, msg *Msghdr, flags int) (n int, err error) = nrecvmsg
487 //sys sendmsg(s int, msg *Msghdr, flags int) (n int, err error) = nsendmsg
488
489 //sys munmap(addr uintptr, length uintptr) (err error)
490
491 var mapper = &mmapper{
492 active: make(map[*byte][]byte),
493 mmap: mmap,
494 munmap: munmap,
495 }
496
497 func Mmap(fd int, offset int64, length int, prot int, flags int) (data []byte, err error) {
498 return mapper.Mmap(fd, offset, length, prot, flags)
499 }
500
501 func Munmap(b []byte) (err error) {
502 return mapper.Munmap(b)
503 }
504
505 //sys Madvise(b []byte, advice int) (err error)
506 //sys Mprotect(b []byte, prot int) (err error)
507 //sys Mlock(b []byte) (err error)
508 //sys Mlockall(flags int) (err error)
509 //sys Msync(b []byte, flags int) (err error)
510 //sys Munlock(b []byte) (err error)
511 //sys Munlockall() (err error)
512
513 //sysnb pipe(p *[2]_C_int) (err error)
514
515 func Pipe(p []int) (err error) {
516 if len(p) != 2 {
517 return EINVAL
518 }
519 var pp [2]_C_int
520 err = pipe(&pp)
521 if err == nil {
522 p[0] = int(pp[0])
523 p[1] = int(pp[1])
524 }
525 return
526 }
527
528 //sys poll(fds *PollFd, nfds int, timeout int) (n int, err error)
529
530 func Poll(fds []PollFd, timeout int) (n int, err error) {
531 if len(fds) == 0 {
532 return poll(nil, 0, timeout)
533 }
534 return poll(&fds[0], len(fds), timeout)
535 }
536
537 //sys gettimeofday(tv *Timeval, tzp *Timezone) (err error)
538 //sysnb Time(t *Time_t) (tt Time_t, err error)
539 //sys Utime(path string, buf *Utimbuf) (err error)
540
541 //sys Getsystemcfg(label int) (n uint64)
542
543 //sys umount(target string) (err error)
544
545 func Unmount(target string, flags int) (err error) {
546 if flags != 0 {
547 // AIX doesn't have any flags for umount.
548 return ENOSYS
549 }
550 return umount(target)
551 }