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comparison vendor/golang.org/x/sys/unix/syscall_dragonfly.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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65:6d985efa0f7a 66:787b5ee0289d
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 (
16 "sync"
17 "unsafe"
18 )
19
20 // See version list in https://github.com/DragonFlyBSD/DragonFlyBSD/blob/master/sys/sys/param.h
21 var (
22 osreldateOnce sync.Once
23 osreldate uint32
24 )
25
26 // First __DragonFly_version after September 2019 ABI changes
27 // http://lists.dragonflybsd.org/pipermail/users/2019-September/358280.html
28 const _dragonflyABIChangeVersion = 500705
29
30 func supportsABI(ver uint32) bool {
31 osreldateOnce.Do(func() { osreldate, _ = SysctlUint32("kern.osreldate") })
32 return osreldate >= ver
33 }
34
35 // SockaddrDatalink implements the Sockaddr interface for AF_LINK type sockets.
36 type SockaddrDatalink struct {
37 Len uint8
38 Family uint8
39 Index uint16
40 Type uint8
41 Nlen uint8
42 Alen uint8
43 Slen uint8
44 Data [12]int8
45 Rcf uint16
46 Route [16]uint16
47 raw RawSockaddrDatalink
48 }
49
50 func anyToSockaddrGOOS(fd int, rsa *RawSockaddrAny) (Sockaddr, error) {
51 return nil, EAFNOSUPPORT
52 }
53
54 // Translate "kern.hostname" to []_C_int{0,1,2,3}.
55 func nametomib(name string) (mib []_C_int, err error) {
56 const siz = unsafe.Sizeof(mib[0])
57
58 // NOTE(rsc): It seems strange to set the buffer to have
59 // size CTL_MAXNAME+2 but use only CTL_MAXNAME
60 // as the size. I don't know why the +2 is here, but the
61 // kernel uses +2 for its own implementation of this function.
62 // I am scared that if we don't include the +2 here, the kernel
63 // will silently write 2 words farther than we specify
64 // and we'll get memory corruption.
65 var buf [CTL_MAXNAME + 2]_C_int
66 n := uintptr(CTL_MAXNAME) * siz
67
68 p := (*byte)(unsafe.Pointer(&buf[0]))
69 bytes, err := ByteSliceFromString(name)
70 if err != nil {
71 return nil, err
72 }
73
74 // Magic sysctl: "setting" 0.3 to a string name
75 // lets you read back the array of integers form.
76 if err = sysctl([]_C_int{0, 3}, p, &n, &bytes[0], uintptr(len(name))); err != nil {
77 return nil, err
78 }
79 return buf[0 : n/siz], nil
80 }
81
82 func direntIno(buf []byte) (uint64, bool) {
83 return readInt(buf, unsafe.Offsetof(Dirent{}.Fileno), unsafe.Sizeof(Dirent{}.Fileno))
84 }
85
86 func direntReclen(buf []byte) (uint64, bool) {
87 namlen, ok := direntNamlen(buf)
88 if !ok {
89 return 0, false
90 }
91 return (16 + namlen + 1 + 7) &^ 7, true
92 }
93
94 func direntNamlen(buf []byte) (uint64, bool) {
95 return readInt(buf, unsafe.Offsetof(Dirent{}.Namlen), unsafe.Sizeof(Dirent{}.Namlen))
96 }
97
98 //sysnb pipe() (r int, w int, err error)
99
100 func Pipe(p []int) (err error) {
101 if len(p) != 2 {
102 return EINVAL
103 }
104 r, w, err := pipe()
105 if err == nil {
106 p[0], p[1] = r, w
107 }
108 return
109 }
110
111 //sysnb pipe2(p *[2]_C_int, flags int) (r int, w int, err error)
112
113 func Pipe2(p []int, flags int) (err error) {
114 if len(p) != 2 {
115 return EINVAL
116 }
117 var pp [2]_C_int
118 // pipe2 on dragonfly takes an fds array as an argument, but still
119 // returns the file descriptors.
120 r, w, err := pipe2(&pp, flags)
121 if err == nil {
122 p[0], p[1] = r, w
123 }
124 return err
125 }
126
127 //sys extpread(fd int, p []byte, flags int, offset int64) (n int, err error)
128
129 func pread(fd int, p []byte, offset int64) (n int, err error) {
130 return extpread(fd, p, 0, offset)
131 }
132
133 //sys extpwrite(fd int, p []byte, flags int, offset int64) (n int, err error)
134
135 func pwrite(fd int, p []byte, offset int64) (n int, err error) {
136 return extpwrite(fd, p, 0, offset)
137 }
138
139 func Accept4(fd, flags int) (nfd int, sa Sockaddr, err error) {
140 var rsa RawSockaddrAny
141 var len _Socklen = SizeofSockaddrAny
142 nfd, err = accept4(fd, &rsa, &len, flags)
143 if err != nil {
144 return
145 }
146 if len > SizeofSockaddrAny {
147 panic("RawSockaddrAny too small")
148 }
149 sa, err = anyToSockaddr(fd, &rsa)
150 if err != nil {
151 Close(nfd)
152 nfd = 0
153 }
154 return
155 }
156
157 //sys Getcwd(buf []byte) (n int, err error) = SYS___GETCWD
158
159 func Getfsstat(buf []Statfs_t, flags int) (n int, err error) {
160 var _p0 unsafe.Pointer
161 var bufsize uintptr
162 if len(buf) > 0 {
163 _p0 = unsafe.Pointer(&buf[0])
164 bufsize = unsafe.Sizeof(Statfs_t{}) * uintptr(len(buf))
165 }
166 r0, _, e1 := Syscall(SYS_GETFSSTAT, uintptr(_p0), bufsize, uintptr(flags))
167 n = int(r0)
168 if e1 != 0 {
169 err = e1
170 }
171 return
172 }
173
174 //sys ioctl(fd int, req uint, arg uintptr) (err error)
175
176 //sys sysctl(mib []_C_int, old *byte, oldlen *uintptr, new *byte, newlen uintptr) (err error) = SYS___SYSCTL
177
178 func sysctlUname(mib []_C_int, old *byte, oldlen *uintptr) error {
179 err := sysctl(mib, old, oldlen, nil, 0)
180 if err != nil {
181 // Utsname members on Dragonfly are only 32 bytes and
182 // the syscall returns ENOMEM in case the actual value
183 // is longer.
184 if err == ENOMEM {
185 err = nil
186 }
187 }
188 return err
189 }
190
191 func Uname(uname *Utsname) error {
192 mib := []_C_int{CTL_KERN, KERN_OSTYPE}
193 n := unsafe.Sizeof(uname.Sysname)
194 if err := sysctlUname(mib, &uname.Sysname[0], &n); err != nil {
195 return err
196 }
197 uname.Sysname[unsafe.Sizeof(uname.Sysname)-1] = 0
198
199 mib = []_C_int{CTL_KERN, KERN_HOSTNAME}
200 n = unsafe.Sizeof(uname.Nodename)
201 if err := sysctlUname(mib, &uname.Nodename[0], &n); err != nil {
202 return err
203 }
204 uname.Nodename[unsafe.Sizeof(uname.Nodename)-1] = 0
205
206 mib = []_C_int{CTL_KERN, KERN_OSRELEASE}
207 n = unsafe.Sizeof(uname.Release)
208 if err := sysctlUname(mib, &uname.Release[0], &n); err != nil {
209 return err
210 }
211 uname.Release[unsafe.Sizeof(uname.Release)-1] = 0
212
213 mib = []_C_int{CTL_KERN, KERN_VERSION}
214 n = unsafe.Sizeof(uname.Version)
215 if err := sysctlUname(mib, &uname.Version[0], &n); err != nil {
216 return err
217 }
218
219 // The version might have newlines or tabs in it, convert them to
220 // spaces.
221 for i, b := range uname.Version {
222 if b == '\n' || b == '\t' {
223 if i == len(uname.Version)-1 {
224 uname.Version[i] = 0
225 } else {
226 uname.Version[i] = ' '
227 }
228 }
229 }
230
231 mib = []_C_int{CTL_HW, HW_MACHINE}
232 n = unsafe.Sizeof(uname.Machine)
233 if err := sysctlUname(mib, &uname.Machine[0], &n); err != nil {
234 return err
235 }
236 uname.Machine[unsafe.Sizeof(uname.Machine)-1] = 0
237
238 return nil
239 }
240
241 func Sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) {
242 if raceenabled {
243 raceReleaseMerge(unsafe.Pointer(&ioSync))
244 }
245 return sendfile(outfd, infd, offset, count)
246 }
247
248 /*
249 * Exposed directly
250 */
251 //sys Access(path string, mode uint32) (err error)
252 //sys Adjtime(delta *Timeval, olddelta *Timeval) (err error)
253 //sys Chdir(path string) (err error)
254 //sys Chflags(path string, flags int) (err error)
255 //sys Chmod(path string, mode uint32) (err error)
256 //sys Chown(path string, uid int, gid int) (err error)
257 //sys Chroot(path string) (err error)
258 //sys Close(fd int) (err error)
259 //sys Dup(fd int) (nfd int, err error)
260 //sys Dup2(from int, to int) (err error)
261 //sys Exit(code int)
262 //sys Faccessat(dirfd int, path string, mode uint32, flags int) (err error)
263 //sys Fchdir(fd int) (err error)
264 //sys Fchflags(fd int, flags int) (err error)
265 //sys Fchmod(fd int, mode uint32) (err error)
266 //sys Fchmodat(dirfd int, path string, mode uint32, flags int) (err error)
267 //sys Fchown(fd int, uid int, gid int) (err error)
268 //sys Fchownat(dirfd int, path string, uid int, gid int, flags int) (err error)
269 //sys Flock(fd int, how int) (err error)
270 //sys Fpathconf(fd int, name int) (val int, err error)
271 //sys Fstat(fd int, stat *Stat_t) (err error)
272 //sys Fstatat(fd int, path string, stat *Stat_t, flags int) (err error)
273 //sys Fstatfs(fd int, stat *Statfs_t) (err error)
274 //sys Fsync(fd int) (err error)
275 //sys Ftruncate(fd int, length int64) (err error)
276 //sys Getdents(fd int, buf []byte) (n int, err error)
277 //sys Getdirentries(fd int, buf []byte, basep *uintptr) (n int, err error)
278 //sys Getdtablesize() (size int)
279 //sysnb Getegid() (egid int)
280 //sysnb Geteuid() (uid int)
281 //sysnb Getgid() (gid int)
282 //sysnb Getpgid(pid int) (pgid int, err error)
283 //sysnb Getpgrp() (pgrp int)
284 //sysnb Getpid() (pid int)
285 //sysnb Getppid() (ppid int)
286 //sys Getpriority(which int, who int) (prio int, err error)
287 //sysnb Getrlimit(which int, lim *Rlimit) (err error)
288 //sysnb Getrusage(who int, rusage *Rusage) (err error)
289 //sysnb Getsid(pid int) (sid int, err error)
290 //sysnb Gettimeofday(tv *Timeval) (err error)
291 //sysnb Getuid() (uid int)
292 //sys Issetugid() (tainted bool)
293 //sys Kill(pid int, signum syscall.Signal) (err error)
294 //sys Kqueue() (fd int, err error)
295 //sys Lchown(path string, uid int, gid int) (err error)
296 //sys Link(path string, link string) (err error)
297 //sys Linkat(pathfd int, path string, linkfd int, link string, flags int) (err error)
298 //sys Listen(s int, backlog int) (err error)
299 //sys Lstat(path string, stat *Stat_t) (err error)
300 //sys Mkdir(path string, mode uint32) (err error)
301 //sys Mkdirat(dirfd int, path string, mode uint32) (err error)
302 //sys Mkfifo(path string, mode uint32) (err error)
303 //sys Mknod(path string, mode uint32, dev int) (err error)
304 //sys Mknodat(fd int, path string, mode uint32, dev int) (err error)
305 //sys Nanosleep(time *Timespec, leftover *Timespec) (err error)
306 //sys Open(path string, mode int, perm uint32) (fd int, err error)
307 //sys Openat(dirfd int, path string, mode int, perm uint32) (fd int, err error)
308 //sys Pathconf(path string, name int) (val int, err error)
309 //sys read(fd int, p []byte) (n int, err error)
310 //sys Readlink(path string, buf []byte) (n int, err error)
311 //sys Rename(from string, to string) (err error)
312 //sys Renameat(fromfd int, from string, tofd int, to string) (err error)
313 //sys Revoke(path string) (err error)
314 //sys Rmdir(path string) (err error)
315 //sys Seek(fd int, offset int64, whence int) (newoffset int64, err error) = SYS_LSEEK
316 //sys Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, err error)
317 //sysnb Setegid(egid int) (err error)
318 //sysnb Seteuid(euid int) (err error)
319 //sysnb Setgid(gid int) (err error)
320 //sys Setlogin(name string) (err error)
321 //sysnb Setpgid(pid int, pgid int) (err error)
322 //sys Setpriority(which int, who int, prio int) (err error)
323 //sysnb Setregid(rgid int, egid int) (err error)
324 //sysnb Setreuid(ruid int, euid int) (err error)
325 //sysnb Setresgid(rgid int, egid int, sgid int) (err error)
326 //sysnb Setresuid(ruid int, euid int, suid int) (err error)
327 //sysnb Setrlimit(which int, lim *Rlimit) (err error)
328 //sysnb Setsid() (pid int, err error)
329 //sysnb Settimeofday(tp *Timeval) (err error)
330 //sysnb Setuid(uid int) (err error)
331 //sys Stat(path string, stat *Stat_t) (err error)
332 //sys Statfs(path string, stat *Statfs_t) (err error)
333 //sys Symlink(path string, link string) (err error)
334 //sys Symlinkat(oldpath string, newdirfd int, newpath string) (err error)
335 //sys Sync() (err error)
336 //sys Truncate(path string, length int64) (err error)
337 //sys Umask(newmask int) (oldmask int)
338 //sys Undelete(path string) (err error)
339 //sys Unlink(path string) (err error)
340 //sys Unlinkat(dirfd int, path string, flags int) (err error)
341 //sys Unmount(path string, flags int) (err error)
342 //sys write(fd int, p []byte) (n int, err error)
343 //sys mmap(addr uintptr, length uintptr, prot int, flag int, fd int, pos int64) (ret uintptr, err error)
344 //sys munmap(addr uintptr, length uintptr) (err error)
345 //sys readlen(fd int, buf *byte, nbuf int) (n int, err error) = SYS_READ
346 //sys writelen(fd int, buf *byte, nbuf int) (n int, err error) = SYS_WRITE
347 //sys accept4(fd int, rsa *RawSockaddrAny, addrlen *_Socklen, flags int) (nfd int, err error)
348 //sys utimensat(dirfd int, path string, times *[2]Timespec, flags int) (err error)
349
350 /*
351 * Unimplemented
352 * TODO(jsing): Update this list for DragonFly.
353 */
354 // Profil
355 // Sigaction
356 // Sigprocmask
357 // Getlogin
358 // Sigpending
359 // Sigaltstack
360 // Reboot
361 // Execve
362 // Vfork
363 // Sbrk
364 // Sstk
365 // Ovadvise
366 // Mincore
367 // Setitimer
368 // Swapon
369 // Select
370 // Sigsuspend
371 // Readv
372 // Writev
373 // Nfssvc
374 // Getfh
375 // Quotactl
376 // Mount
377 // Csops
378 // Waitid
379 // Add_profil
380 // Kdebug_trace
381 // Sigreturn
382 // Atsocket
383 // Kqueue_from_portset_np
384 // Kqueue_portset
385 // Getattrlist
386 // Setattrlist
387 // Getdirentriesattr
388 // Searchfs
389 // Delete
390 // Copyfile
391 // Watchevent
392 // Waitevent
393 // Modwatch
394 // Getxattr
395 // Fgetxattr
396 // Setxattr
397 // Fsetxattr
398 // Removexattr
399 // Fremovexattr
400 // Listxattr
401 // Flistxattr
402 // Fsctl
403 // Initgroups
404 // Posix_spawn
405 // Nfsclnt
406 // Fhopen
407 // Minherit
408 // Semsys
409 // Msgsys
410 // Shmsys
411 // Semctl
412 // Semget
413 // Semop
414 // Msgctl
415 // Msgget
416 // Msgsnd
417 // Msgrcv
418 // Shmat
419 // Shmctl
420 // Shmdt
421 // Shmget
422 // Shm_open
423 // Shm_unlink
424 // Sem_open
425 // Sem_close
426 // Sem_unlink
427 // Sem_wait
428 // Sem_trywait
429 // Sem_post
430 // Sem_getvalue
431 // Sem_init
432 // Sem_destroy
433 // Open_extended
434 // Umask_extended
435 // Stat_extended
436 // Lstat_extended
437 // Fstat_extended
438 // Chmod_extended
439 // Fchmod_extended
440 // Access_extended
441 // Settid
442 // Gettid
443 // Setsgroups
444 // Getsgroups
445 // Setwgroups
446 // Getwgroups
447 // Mkfifo_extended
448 // Mkdir_extended
449 // Identitysvc
450 // Shared_region_check_np
451 // Shared_region_map_np
452 // __pthread_mutex_destroy
453 // __pthread_mutex_init
454 // __pthread_mutex_lock
455 // __pthread_mutex_trylock
456 // __pthread_mutex_unlock
457 // __pthread_cond_init
458 // __pthread_cond_destroy
459 // __pthread_cond_broadcast
460 // __pthread_cond_signal
461 // Setsid_with_pid
462 // __pthread_cond_timedwait
463 // Aio_fsync
464 // Aio_return
465 // Aio_suspend
466 // Aio_cancel
467 // Aio_error
468 // Aio_read
469 // Aio_write
470 // Lio_listio
471 // __pthread_cond_wait
472 // Iopolicysys
473 // __pthread_kill
474 // __pthread_sigmask
475 // __sigwait
476 // __disable_threadsignal
477 // __pthread_markcancel
478 // __pthread_canceled
479 // __semwait_signal
480 // Proc_info
481 // Stat64_extended
482 // Lstat64_extended
483 // Fstat64_extended
484 // __pthread_chdir
485 // __pthread_fchdir
486 // Audit
487 // Auditon
488 // Getauid
489 // Setauid
490 // Getaudit
491 // Setaudit
492 // Getaudit_addr
493 // Setaudit_addr
494 // Auditctl
495 // Bsdthread_create
496 // Bsdthread_terminate
497 // Stack_snapshot
498 // Bsdthread_register
499 // Workq_open
500 // Workq_ops
501 // __mac_execve
502 // __mac_syscall
503 // __mac_get_file
504 // __mac_set_file
505 // __mac_get_link
506 // __mac_set_link
507 // __mac_get_proc
508 // __mac_set_proc
509 // __mac_get_fd
510 // __mac_set_fd
511 // __mac_get_pid
512 // __mac_get_lcid
513 // __mac_get_lctx
514 // __mac_set_lctx
515 // Setlcid
516 // Read_nocancel
517 // Write_nocancel
518 // Open_nocancel
519 // Close_nocancel
520 // Wait4_nocancel
521 // Recvmsg_nocancel
522 // Sendmsg_nocancel
523 // Recvfrom_nocancel
524 // Accept_nocancel
525 // Fcntl_nocancel
526 // Select_nocancel
527 // Fsync_nocancel
528 // Connect_nocancel
529 // Sigsuspend_nocancel
530 // Readv_nocancel
531 // Writev_nocancel
532 // Sendto_nocancel
533 // Pread_nocancel
534 // Pwrite_nocancel
535 // Waitid_nocancel
536 // Msgsnd_nocancel
537 // Msgrcv_nocancel
538 // Sem_wait_nocancel
539 // Aio_suspend_nocancel
540 // __sigwait_nocancel
541 // __semwait_signal_nocancel
542 // __mac_mount
543 // __mac_get_mount
544 // __mac_getfsstat