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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 | // FreeBSD 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 | type SockaddrDatalink struct { | |
18 | Len uint8 | |
19 | Family uint8 | |
20 | Index uint16 | |
21 | Type uint8 | |
22 | Nlen uint8 | |
23 | Alen uint8 | |
24 | Slen uint8 | |
25 | Data [12]int8 | |
26 | Rcf uint16 | |
27 | Route [16]uint16 | |
28 | raw RawSockaddrDatalink | |
29 | } | |
30 | ||
31 | // Translate "kern.hostname" to []_C_int{0,1,2,3}. | |
32 | func nametomib(name string) (mib []_C_int, err error) { | |
33 | const siz = unsafe.Sizeof(mib[0]) | |
34 | ||
35 | // NOTE(rsc): It seems strange to set the buffer to have | |
36 | // size CTL_MAXNAME+2 but use only CTL_MAXNAME | |
37 | // as the size. I don't know why the +2 is here, but the | |
38 | // kernel uses +2 for its own implementation of this function. | |
39 | // I am scared that if we don't include the +2 here, the kernel | |
40 | // will silently write 2 words farther than we specify | |
41 | // and we'll get memory corruption. | |
42 | var buf [CTL_MAXNAME + 2]_C_int | |
43 | n := uintptr(CTL_MAXNAME) * siz | |
44 | ||
45 | p := (*byte)(unsafe.Pointer(&buf[0])) | |
46 | bytes, err := ByteSliceFromString(name) | |
47 | if err != nil { | |
48 | return nil, err | |
49 | } | |
50 | ||
51 | // Magic sysctl: "setting" 0.3 to a string name | |
52 | // lets you read back the array of integers form. | |
53 | if err = sysctl([]_C_int{0, 3}, p, &n, &bytes[0], uintptr(len(name))); err != nil { | |
54 | return nil, err | |
55 | } | |
56 | return buf[0 : n/siz], nil | |
57 | } | |
58 | ||
59 | // ParseDirent parses up to max directory entries in buf, | |
60 | // appending the names to names. It returns the number | |
61 | // bytes consumed from buf, the number of entries added | |
62 | // to names, and the new names slice. | |
63 | func ParseDirent(buf []byte, max int, names []string) (consumed int, count int, newnames []string) { | |
64 | origlen := len(buf) | |
65 | for max != 0 && len(buf) > 0 { | |
66 | dirent := (*Dirent)(unsafe.Pointer(&buf[0])) | |
67 | reclen := int(16+dirent.Namlen+1+7) & ^7 | |
68 | buf = buf[reclen:] | |
69 | if dirent.Fileno == 0 { // File absent in directory. | |
70 | continue | |
71 | } | |
72 | bytes := (*[10000]byte)(unsafe.Pointer(&dirent.Name[0])) | |
73 | var name = string(bytes[0:dirent.Namlen]) | |
74 | if name == "." || name == ".." { // Useless names | |
75 | continue | |
76 | } | |
77 | max-- | |
78 | count++ | |
79 | names = append(names, name) | |
80 | } | |
81 | return origlen - len(buf), count, names | |
82 | } | |
83 | ||
84 | //sysnb pipe() (r int, w int, err error) | |
85 | ||
86 | func Pipe(p []int) (err error) { | |
87 | if len(p) != 2 { | |
88 | return EINVAL | |
89 | } | |
90 | p[0], p[1], err = pipe() | |
91 | return | |
92 | } | |
93 | ||
94 | //sys extpread(fd int, p []byte, flags int, offset int64) (n int, err error) | |
95 | func Pread(fd int, p []byte, offset int64) (n int, err error) { | |
96 | return extpread(fd, p, 0, offset) | |
97 | } | |
98 | ||
99 | //sys extpwrite(fd int, p []byte, flags int, offset int64) (n int, err error) | |
100 | func Pwrite(fd int, p []byte, offset int64) (n int, err error) { | |
101 | return extpwrite(fd, p, 0, offset) | |
102 | } | |
103 | ||
104 | func Getfsstat(buf []Statfs_t, flags int) (n int, err error) { | |
105 | var _p0 unsafe.Pointer | |
106 | var bufsize uintptr | |
107 | if len(buf) > 0 { | |
108 | _p0 = unsafe.Pointer(&buf[0]) | |
109 | bufsize = unsafe.Sizeof(Statfs_t{}) * uintptr(len(buf)) | |
110 | } | |
111 | r0, _, e1 := Syscall(SYS_GETFSSTAT, uintptr(_p0), bufsize, uintptr(flags)) | |
112 | n = int(r0) | |
113 | if e1 != 0 { | |
114 | err = e1 | |
115 | } | |
116 | return | |
117 | } | |
118 | ||
119 | /* | |
120 | * Exposed directly | |
121 | */ | |
122 | //sys Access(path string, mode uint32) (err error) | |
123 | //sys Adjtime(delta *Timeval, olddelta *Timeval) (err error) | |
124 | //sys Chdir(path string) (err error) | |
125 | //sys Chflags(path string, flags int) (err error) | |
126 | //sys Chmod(path string, mode uint32) (err error) | |
127 | //sys Chown(path string, uid int, gid int) (err error) | |
128 | //sys Chroot(path string) (err error) | |
129 | //sys Close(fd int) (err error) | |
130 | //sys Dup(fd int) (nfd int, err error) | |
131 | //sys Dup2(from int, to int) (err error) | |
132 | //sys Exit(code int) | |
133 | //sys Fchdir(fd int) (err error) | |
134 | //sys Fchflags(fd int, flags int) (err error) | |
135 | //sys Fchmod(fd int, mode uint32) (err error) | |
136 | //sys Fchown(fd int, uid int, gid int) (err error) | |
137 | //sys Flock(fd int, how int) (err error) | |
138 | //sys Fpathconf(fd int, name int) (val int, err error) | |
139 | //sys Fstat(fd int, stat *Stat_t) (err error) | |
140 | //sys Fstatfs(fd int, stat *Statfs_t) (err error) | |
141 | //sys Fsync(fd int) (err error) | |
142 | //sys Ftruncate(fd int, length int64) (err error) | |
143 | //sys Getdirentries(fd int, buf []byte, basep *uintptr) (n int, err error) | |
144 | //sys Getdtablesize() (size int) | |
145 | //sysnb Getegid() (egid int) | |
146 | //sysnb Geteuid() (uid int) | |
147 | //sysnb Getgid() (gid int) | |
148 | //sysnb Getpgid(pid int) (pgid int, err error) | |
149 | //sysnb Getpgrp() (pgrp int) | |
150 | //sysnb Getpid() (pid int) | |
151 | //sysnb Getppid() (ppid int) | |
152 | //sys Getpriority(which int, who int) (prio int, err error) | |
153 | //sysnb Getrlimit(which int, lim *Rlimit) (err error) | |
154 | //sysnb Getrusage(who int, rusage *Rusage) (err error) | |
155 | //sysnb Getsid(pid int) (sid int, err error) | |
156 | //sysnb Gettimeofday(tv *Timeval) (err error) | |
157 | //sysnb Getuid() (uid int) | |
158 | //sys Issetugid() (tainted bool) | |
159 | //sys Kill(pid int, signum syscall.Signal) (err error) | |
160 | //sys Kqueue() (fd int, err error) | |
161 | //sys Lchown(path string, uid int, gid int) (err error) | |
162 | //sys Link(path string, link string) (err error) | |
163 | //sys Listen(s int, backlog int) (err error) | |
164 | //sys Lstat(path string, stat *Stat_t) (err error) | |
165 | //sys Mkdir(path string, mode uint32) (err error) | |
166 | //sys Mkfifo(path string, mode uint32) (err error) | |
167 | //sys Mknod(path string, mode uint32, dev int) (err error) | |
168 | //sys Mlock(b []byte) (err error) | |
169 | //sys Mlockall(flags int) (err error) | |
170 | //sys Mprotect(b []byte, prot int) (err error) | |
171 | //sys Munlock(b []byte) (err error) | |
172 | //sys Munlockall() (err error) | |
173 | //sys Nanosleep(time *Timespec, leftover *Timespec) (err error) | |
174 | //sys Open(path string, mode int, perm uint32) (fd int, err error) | |
175 | //sys Pathconf(path string, name int) (val int, err error) | |
176 | //sys read(fd int, p []byte) (n int, err error) | |
177 | //sys Readlink(path string, buf []byte) (n int, err error) | |
178 | //sys Rename(from string, to string) (err error) | |
179 | //sys Revoke(path string) (err error) | |
180 | //sys Rmdir(path string) (err error) | |
181 | //sys Seek(fd int, offset int64, whence int) (newoffset int64, err error) = SYS_LSEEK | |
182 | //sys Select(n int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (err error) | |
183 | //sysnb Setegid(egid int) (err error) | |
184 | //sysnb Seteuid(euid int) (err error) | |
185 | //sysnb Setgid(gid int) (err error) | |
186 | //sys Setlogin(name string) (err error) | |
187 | //sysnb Setpgid(pid int, pgid int) (err error) | |
188 | //sys Setpriority(which int, who int, prio int) (err error) | |
189 | //sysnb Setregid(rgid int, egid int) (err error) | |
190 | //sysnb Setreuid(ruid int, euid int) (err error) | |
191 | //sysnb Setresgid(rgid int, egid int, sgid int) (err error) | |
192 | //sysnb Setresuid(ruid int, euid int, suid int) (err error) | |
193 | //sysnb Setrlimit(which int, lim *Rlimit) (err error) | |
194 | //sysnb Setsid() (pid int, err error) | |
195 | //sysnb Settimeofday(tp *Timeval) (err error) | |
196 | //sysnb Setuid(uid int) (err error) | |
197 | //sys Stat(path string, stat *Stat_t) (err error) | |
198 | //sys Statfs(path string, stat *Statfs_t) (err error) | |
199 | //sys Symlink(path string, link string) (err error) | |
200 | //sys Sync() (err error) | |
201 | //sys Truncate(path string, length int64) (err error) | |
202 | //sys Umask(newmask int) (oldmask int) | |
203 | //sys Undelete(path string) (err error) | |
204 | //sys Unlink(path string) (err error) | |
205 | //sys Unmount(path string, flags int) (err error) | |
206 | //sys write(fd int, p []byte) (n int, err error) | |
207 | //sys mmap(addr uintptr, length uintptr, prot int, flag int, fd int, pos int64) (ret uintptr, err error) | |
208 | //sys munmap(addr uintptr, length uintptr) (err error) | |
209 | //sys readlen(fd int, buf *byte, nbuf int) (n int, err error) = SYS_READ | |
210 | //sys writelen(fd int, buf *byte, nbuf int) (n int, err error) = SYS_WRITE | |
211 | ||
212 | /* | |
213 | * Unimplemented | |
214 | * TODO(jsing): Update this list for DragonFly. | |
215 | */ | |
216 | // Profil | |
217 | // Sigaction | |
218 | // Sigprocmask | |
219 | // Getlogin | |
220 | // Sigpending | |
221 | // Sigaltstack | |
222 | // Ioctl | |
223 | // Reboot | |
224 | // Execve | |
225 | // Vfork | |
226 | // Sbrk | |
227 | // Sstk | |
228 | // Ovadvise | |
229 | // Mincore | |
230 | // Setitimer | |
231 | // Swapon | |
232 | // Select | |
233 | // Sigsuspend | |
234 | // Readv | |
235 | // Writev | |
236 | // Nfssvc | |
237 | // Getfh | |
238 | // Quotactl | |
239 | // Mount | |
240 | // Csops | |
241 | // Waitid | |
242 | // Add_profil | |
243 | // Kdebug_trace | |
244 | // Sigreturn | |
245 | // Mmap | |
246 | // Atsocket | |
247 | // Kqueue_from_portset_np | |
248 | // Kqueue_portset | |
249 | // Getattrlist | |
250 | // Setattrlist | |
251 | // Getdirentriesattr | |
252 | // Searchfs | |
253 | // Delete | |
254 | // Copyfile | |
255 | // Poll | |
256 | // Watchevent | |
257 | // Waitevent | |
258 | // Modwatch | |
259 | // Getxattr | |
260 | // Fgetxattr | |
261 | // Setxattr | |
262 | // Fsetxattr | |
263 | // Removexattr | |
264 | // Fremovexattr | |
265 | // Listxattr | |
266 | // Flistxattr | |
267 | // Fsctl | |
268 | // Initgroups | |
269 | // Posix_spawn | |
270 | // Nfsclnt | |
271 | // Fhopen | |
272 | // Minherit | |
273 | // Semsys | |
274 | // Msgsys | |
275 | // Shmsys | |
276 | // Semctl | |
277 | // Semget | |
278 | // Semop | |
279 | // Msgctl | |
280 | // Msgget | |
281 | // Msgsnd | |
282 | // Msgrcv | |
283 | // Shmat | |
284 | // Shmctl | |
285 | // Shmdt | |
286 | // Shmget | |
287 | // Shm_open | |
288 | // Shm_unlink | |
289 | // Sem_open | |
290 | // Sem_close | |
291 | // Sem_unlink | |
292 | // Sem_wait | |
293 | // Sem_trywait | |
294 | // Sem_post | |
295 | // Sem_getvalue | |
296 | // Sem_init | |
297 | // Sem_destroy | |
298 | // Open_extended | |
299 | // Umask_extended | |
300 | // Stat_extended | |
301 | // Lstat_extended | |
302 | // Fstat_extended | |
303 | // Chmod_extended | |
304 | // Fchmod_extended | |
305 | // Access_extended | |
306 | // Settid | |
307 | // Gettid | |
308 | // Setsgroups | |
309 | // Getsgroups | |
310 | // Setwgroups | |
311 | // Getwgroups | |
312 | // Mkfifo_extended | |
313 | // Mkdir_extended | |
314 | // Identitysvc | |
315 | // Shared_region_check_np | |
316 | // Shared_region_map_np | |
317 | // __pthread_mutex_destroy | |
318 | // __pthread_mutex_init | |
319 | // __pthread_mutex_lock | |
320 | // __pthread_mutex_trylock | |
321 | // __pthread_mutex_unlock | |
322 | // __pthread_cond_init | |
323 | // __pthread_cond_destroy | |
324 | // __pthread_cond_broadcast | |
325 | // __pthread_cond_signal | |
326 | // Setsid_with_pid | |
327 | // __pthread_cond_timedwait | |
328 | // Aio_fsync | |
329 | // Aio_return | |
330 | // Aio_suspend | |
331 | // Aio_cancel | |
332 | // Aio_error | |
333 | // Aio_read | |
334 | // Aio_write | |
335 | // Lio_listio | |
336 | // __pthread_cond_wait | |
337 | // Iopolicysys | |
338 | // __pthread_kill | |
339 | // __pthread_sigmask | |
340 | // __sigwait | |
341 | // __disable_threadsignal | |
342 | // __pthread_markcancel | |
343 | // __pthread_canceled | |
344 | // __semwait_signal | |
345 | // Proc_info | |
346 | // Stat64_extended | |
347 | // Lstat64_extended | |
348 | // Fstat64_extended | |
349 | // __pthread_chdir | |
350 | // __pthread_fchdir | |
351 | // Audit | |
352 | // Auditon | |
353 | // Getauid | |
354 | // Setauid | |
355 | // Getaudit | |
356 | // Setaudit | |
357 | // Getaudit_addr | |
358 | // Setaudit_addr | |
359 | // Auditctl | |
360 | // Bsdthread_create | |
361 | // Bsdthread_terminate | |
362 | // Stack_snapshot | |
363 | // Bsdthread_register | |
364 | // Workq_open | |
365 | // Workq_ops | |
366 | // __mac_execve | |
367 | // __mac_syscall | |
368 | // __mac_get_file | |
369 | // __mac_set_file | |
370 | // __mac_get_link | |
371 | // __mac_set_link | |
372 | // __mac_get_proc | |
373 | // __mac_set_proc | |
374 | // __mac_get_fd | |
375 | // __mac_set_fd | |
376 | // __mac_get_pid | |
377 | // __mac_get_lcid | |
378 | // __mac_get_lctx | |
379 | // __mac_set_lctx | |
380 | // Setlcid | |
381 | // Read_nocancel | |
382 | // Write_nocancel | |
383 | // Open_nocancel | |
384 | // Close_nocancel | |
385 | // Wait4_nocancel | |
386 | // Recvmsg_nocancel | |
387 | // Sendmsg_nocancel | |
388 | // Recvfrom_nocancel | |
389 | // Accept_nocancel | |
390 | // Msync_nocancel | |
391 | // Fcntl_nocancel | |
392 | // Select_nocancel | |
393 | // Fsync_nocancel | |
394 | // Connect_nocancel | |
395 | // Sigsuspend_nocancel | |
396 | // Readv_nocancel | |
397 | // Writev_nocancel | |
398 | // Sendto_nocancel | |
399 | // Pread_nocancel | |
400 | // Pwrite_nocancel | |
401 | // Waitid_nocancel | |
402 | // Poll_nocancel | |
403 | // Msgsnd_nocancel | |
404 | // Msgrcv_nocancel | |
405 | // Sem_wait_nocancel | |
406 | // Aio_suspend_nocancel | |
407 | // __sigwait_nocancel | |
408 | // __semwait_signal_nocancel | |
409 | // __mac_mount | |
410 | // __mac_get_mount | |
411 | // __mac_getfsstat |