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1/*
2 * Copyright (c) 2003 Apple Computer, Inc. All rights reserved.
3 *
4 * @APPLE_LICENSE_HEADER_START@
5 *
6 * Copyright (c) 1999-2003 Apple Computer, Inc. All Rights Reserved.
7 *
8 * This file contains Original Code and/or Modifications of Original Code
9 * as defined in and that are subject to the Apple Public Source License
10 * Version 2.0 (the 'License'). You may not use this file except in
11 * compliance with the License. Please obtain a copy of the License at
12 * http://www.opensource.apple.com/apsl/ and read it before using this
13 * file.
14 *
15 * The Original Code and all software distributed under the License are
16 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
17 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
18 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
20 * Please see the License for the specific language governing rights and
21 * limitations under the License.
22 *
23 * @APPLE_LICENSE_HEADER_END@
24 */
25
26#include <sys/types.h>
27#include <sys/vnode.h>
28#include <sys/fcntl.h>
29#include <sys/filedesc.h>
30#include <sys/sem.h>
31#include <sys/audit.h>
32#include <sys/kern_audit.h>
33#include <sys/bsm_kevents.h>
34#include <sys/bsm_klib.h>
35
36/*
37 * Initialize the system call to audit event mapping table. This table
38 * must be kept in sync with the system call table. This table is meant to
39 * be directly accessed.
40 * XXX This should be improved, though, to make it independent of the syscall
41 * table (but we don't want to traverse a large table for every system call
42 * to find a match). Ultimately, it would be best to place the audit event
43 * number in the system call table.
44 */
45au_event_t sys_au_event[] = {
46 AUE_NULL, /* 0 = indir */
47 AUE_EXIT, /* 1 = exit */
48 AUE_NULL, /* 2 = fork */
49 AUE_NULL, /* 3 = read */
50 AUE_NULL, /* 4 = write */
51 AUE_OPEN_R, /* 5 = open */
52 AUE_NULL, /* 6 = close */
53 AUE_NULL, /* 7 = wait4 */
54 AUE_NULL, /* 8 = old creat */
55 AUE_LINK, /* 9 = link */
56 AUE_UNLINK, /* 10 = unlink */
57 AUE_NULL, /* 11 was obsolete execv */
58 AUE_CHDIR, /* 12 = chdir */
59 AUE_FCHDIR, /* 13 = fchdir */
60 AUE_MKNOD, /* 14 = mknod */
61 AUE_CHMOD, /* 15 = chmod */
62 AUE_CHOWN, /* 16 = chown; now 3 args */
63 AUE_NULL, /* 17 = old break */
64#if COMPAT_GETFSSTAT
65 AUE_NULL, /* 18 = ogetfsstat */
66#else
67 AUE_GETFSSTAT, /* 18 = getfsstat */
68#endif
69 AUE_NULL, /* 19 = old lseek */
70 AUE_NULL, /* 20 = getpid */
71 AUE_NULL, /* 21 was obsolete mount */
72 AUE_NULL, /* 22 was obsolete umount */
73 AUE_SETUID, /* 23 = setuid */
74 AUE_NULL, /* 24 = getuid */
75 AUE_NULL, /* 25 = geteuid */
76 AUE_NULL, /* 26 = ptrace */
77 AUE_RECVMSG, /* 27 = recvmsg */
78 AUE_SENDMSG, /* 28 = sendmsg */
79 AUE_RECVFROM, /* 29 = recvfrom */
80 AUE_ACCEPT, /* 30 = accept */
81 AUE_NULL, /* 31 = getpeername */
82 AUE_NULL, /* 32 = getsockname */
83 AUE_ACCESS, /* 33 = access */
84 AUE_CHFLAGS, /* 34 = chflags */
85 AUE_FCHFLAGS, /* 35 = fchflags */
86 AUE_NULL, /* 36 = sync */
87 AUE_NULL, /* 37 = kill */
88 AUE_NULL, /* 38 = old stat */
89 AUE_NULL, /* 39 = getppid */
90 AUE_NULL, /* 40 = old lstat */
91 AUE_NULL, /* 41 = dup */
92 AUE_PIPE, /* 42 = pipe */
93 AUE_NULL, /* 43 = getegid */
94 AUE_NULL, /* 44 = profil */
95 AUE_NULL, /* 45 = ktrace */
96 AUE_NULL, /* 46 = sigaction */
97 AUE_NULL, /* 47 = getgid */
98 AUE_NULL, /* 48 = sigprocmask */
99 AUE_NULL, /* 49 = getlogin */
100 AUE_NULL, /* 50 = setlogin */
101 AUE_NULL, /* 51 = turn acct off/on */
102 AUE_NULL, /* 52 = sigpending */
103 AUE_NULL, /* 53 = sigaltstack */
104 AUE_NULL, /* 54 = ioctl */
105 AUE_NULL, /* 55 = reboot */
106 AUE_REVOKE, /* 56 = revoke */
107 AUE_SYMLINK, /* 57 = symlink */
108 AUE_READLINK, /* 58 = readlink */
109 AUE_EXECVE, /* 59 = execve */
110 AUE_UMASK, /* 60 = umask */
111 AUE_CHROOT, /* 61 = chroot */
112 AUE_NULL, /* 62 = old fstat */
113 AUE_NULL, /* 63 = used internally, reserved */
114 AUE_NULL, /* 64 = old getpagesize */
115 AUE_NULL, /* 65 = msync */
116 AUE_NULL, /* 66 = vfork */
117 AUE_NULL, /* 67 was obsolete vread */
118 AUE_NULL, /* 68 was obsolete vwrite */
119 AUE_NULL, /* 69 = sbrk */
120 AUE_NULL, /* 70 = sstk */
121 AUE_NULL, /* 71 = old mmap */
122 AUE_NULL, /* 72 = old vadvise */
123 AUE_NULL, /* 73 = munmap */
124 AUE_NULL, /* 74 = mprotect */
125 AUE_NULL, /* 75 = madvise */
126 AUE_NULL, /* 76 was obsolete vhangup */
127 AUE_NULL, /* 77 was obsolete vlimit */
128 AUE_NULL, /* 78 = mincore */
129 AUE_NULL, /* 79 = getgroups */
130 AUE_SETGROUPS, /* 80 = setgroups */
131 AUE_NULL, /* 81 = getpgrp */
132 AUE_SETPGRP, /* 82 = setpgid */
133 AUE_NULL, /* 83 = setitimer */
134 AUE_NULL, /* 84 = old wait */
135 AUE_NULL, /* 85 = swapon */
136 AUE_NULL, /* 86 = getitimer */
137 AUE_NULL, /* 87 = old gethostname */
138 AUE_NULL, /* 88 = old sethostname */
139 AUE_NULL, /* 89 getdtablesize */
140 AUE_NULL, /* 90 = dup2 */
141 AUE_NULL, /* 91 was obsolete getdopt */
142 AUE_FCNTL, /* 92 = fcntl */
143 AUE_NULL, /* 93 = select */
144 AUE_NULL, /* 94 was obsolete setdopt */
145 AUE_NULL, /* 95 = fsync */
146 AUE_NULL, /* 96 = setpriority */
147 AUE_SOCKET, /* 97 = socket */
148 AUE_CONNECT, /* 98 = connect */
149 AUE_NULL, /* 99 = accept */
150 AUE_NULL, /* 100 = getpriority */
151 AUE_NULL, /* 101 = old send */
152 AUE_NULL, /* 102 = old recv */
153 AUE_NULL, /* 103 = sigreturn */
154 AUE_BIND, /* 104 = bind */
155 AUE_SETSOCKOPT, /* 105 = setsockopt */
156 AUE_NULL, /* 106 = listen */
157 AUE_NULL, /* 107 was vtimes */
158 AUE_NULL, /* 108 = sigvec */
159 AUE_NULL, /* 109 = sigblock */
160 AUE_NULL, /* 110 = sigsetmask */
161 AUE_NULL, /* 111 = sigpause */
162 AUE_NULL, /* 112 = sigstack */
163 AUE_NULL, /* 113 = recvmsg */
164 AUE_NULL, /* 114 = sendmsg */
165 AUE_NULL, /* 115 = old vtrace */
166 AUE_NULL, /* 116 = gettimeofday */
167 AUE_NULL, /* 117 = getrusage */
168 AUE_NULL, /* 118 = getsockopt */
169 AUE_NULL, /* 119 = old resuba */
170 AUE_NULL, /* 120 = readv */
171 AUE_NULL, /* 121 = writev */
172 AUE_NULL, /* 122 = settimeofday */
173 AUE_FCHOWN, /* 123 = fchown */
174 AUE_FCHMOD, /* 124 = fchmod */
175 AUE_NULL, /* 125 = recvfrom */
176 AUE_NULL, /* 126 = setreuid */
177 AUE_NULL, /* 127 = setregid */
178 AUE_RENAME, /* 128 = rename */
179 AUE_NULL, /* 129 = old truncate */
180 AUE_NULL, /* 130 = old ftruncate */
181 AUE_FLOCK, /* 131 = flock */
182 AUE_MKFIFO, /* 132 = mkfifo */
183 AUE_SENDTO, /* 133 = sendto */
184 AUE_SHUTDOWN, /* 134 = shutdown */
185 AUE_SOCKETPAIR, /* 135 = socketpair */
186 AUE_MKDIR, /* 136 = mkdir */
187 AUE_RMDIR, /* 137 = rmdir */
188 AUE_UTIMES, /* 138 = utimes */
189 AUE_FUTIMES, /* 139 = futimes */
190 AUE_ADJTIME, /* 140 = adjtime */
191 AUE_NULL, /* 141 = getpeername */
192 AUE_NULL, /* 142 = old gethostid */
193 AUE_NULL, /* 143 = old sethostid */
194 AUE_NULL, /* 144 = old getrlimit */
195 AUE_NULL, /* 145 = old setrlimit */
196 AUE_NULL, /* 146 = old killpg */
197 AUE_NULL, /* 147 = setsid */
198 AUE_NULL, /* 148 was setquota */
199 AUE_NULL, /* 149 was qquota */
200 AUE_NULL, /* 150 = getsockname */
201 AUE_NULL, /* 151 = getpgid */
202 AUE_NULL, /* 152 = setprivexec */
203 AUE_NULL, /* 153 = pread */
204 AUE_NULL, /* 154 = pwrite */
205 AUE_NULL, /* 155 = nfs_svc */
206 AUE_NULL, /* 156 = old getdirentries */
207 AUE_STATFS, /* 157 = statfs */
208 AUE_FSTATFS, /* 158 = fstatfs */
209 AUE_UMOUNT, /* 159 = unmount */
210 AUE_NULL, /* 160 was async_daemon */
211 AUE_GETFH, /* 161 = get file handle */
212 AUE_NULL, /* 162 = getdomainname */
213 AUE_NULL, /* 163 = setdomainname */
214 AUE_NULL, /* 164 */
215#if QUOTA
216 AUE_QUOTACTL, /* 165 = quotactl */
217#else /* QUOTA */
218 AUE_NULL, /* 165 = not configured */
219#endif /* QUOTA */
220 AUE_NULL, /* 166 was exportfs */
221 AUE_MOUNT, /* 167 = mount */
222 AUE_NULL, /* 168 was ustat */
223 AUE_NULL, /* 169 = nosys */
224 AUE_NULL, /* 170 was table */
225 AUE_NULL, /* 171 = old wait3 */
226 AUE_NULL, /* 172 was rpause */
227 AUE_NULL, /* 173 = nosys */
228 AUE_NULL, /* 174 was getdents */
229 AUE_NULL, /* 175 was gc_control */
230 AUE_NULL, /* 176 = add_profil */
231 AUE_NULL, /* 177 */
232 AUE_NULL, /* 178 */
233 AUE_NULL, /* 179 */
234 AUE_NULL, /* 180 */
235 AUE_SETGID, /* 181 */
236 AUE_SETEGID, /* 182 */
237 AUE_SETEUID, /* 183 */
238 AUE_NULL, /* 184 = nosys */
239 AUE_NULL, /* 185 = nosys */
240 AUE_NULL, /* 186 = nosys */
241 AUE_NULL, /* 187 = nosys */
242 AUE_STAT, /* 188 = stat */
243 AUE_FSTAT, /* 189 = fstat */
244 AUE_LSTAT, /* 190 = lstat */
245 AUE_PATHCONF, /* 191 = pathconf */
246 AUE_FPATHCONF, /* 192 = fpathconf */
247
248#if COMPAT_GETFSSTAT
249 AUE_GETFSSTAT, /* 193 = getfsstat */
250#else
251 AUE_NULL, /* 193 is unused */
252#endif
253 AUE_NULL, /* 194 = getrlimit */
254 AUE_SETRLIMIT, /* 195 = setrlimit */
255 AUE_GETDIRENTRIES, /* 196 = getdirentries */
256 AUE_NULL, /* 197 = mmap */
257 AUE_NULL, /* 198 = __syscall */
258 AUE_NULL, /* 199 = lseek */
259 AUE_TRUNCATE, /* 200 = truncate */
260 AUE_FTRUNCATE, /* 201 = ftruncate */
261 AUE_NULL, /* 202 = __sysctl */
262 AUE_NULL, /* 203 = mlock */
263 AUE_NULL, /* 204 = munlock */
264 AUE_UNDELETE, /* 205 = undelete */
265 AUE_NULL, /* 206 = ATsocket */
266 AUE_NULL, /* 207 = ATgetmsg*/
267 AUE_NULL, /* 208 = ATputmsg*/
268 AUE_NULL, /* 209 = ATPsndreq*/
269 AUE_NULL, /* 210 = ATPsndrsp*/
270 AUE_NULL, /* 211 = ATPgetreq*/
271 AUE_NULL, /* 212 = ATPgetrsp*/
272 AUE_NULL, /* 213 = Reserved for AppleTalk */
273 AUE_NULL, /* 214 = Reserved for AppleTalk */
274 AUE_NULL, /* 215 = Reserved for AppleTalk */
275
276 AUE_NULL, /* 216 = HFS make complex file call (multipel forks */
277 AUE_NULL, /* 217 = HFS statv extended stat call for HFS */
278 AUE_NULL, /* 218 = HFS lstatv extended lstat call for HFS */
279 AUE_NULL, /* 219 = HFS fstatv extended fstat call for HFS */
280 AUE_GETATTRLIST,/* 220 = HFS getarrtlist get attribute list cal */
281 AUE_SETATTRLIST,/* 221 = HFS setattrlist set attribute list */
282 AUE_GETDIRENTRIESATTR,/* 222 = HFS getdirentriesattr get directory attributes */
283 AUE_EXCHANGEDATA,/* 223 = HFS exchangedata exchange file contents */
284 AUE_NULL,/* 224 = HFS checkuseraccess check access to a file */
285 AUE_SEARCHFS, /* 225 = HFS searchfs to implement catalog searching */
286 AUE_NULL, /* 226 = private delete (Carbon semantics) */
287 AUE_NULL, /* 227 = copyfile - orignally for AFP */
288 AUE_NULL, /* 228 */
289 AUE_NULL, /* 229 */
290 AUE_NULL, /* 230 */
291 AUE_NULL, /* 231 */
292 AUE_NULL, /* 232 */
293 AUE_NULL, /* 233 */
294 AUE_NULL, /* 234 */
295 AUE_NULL, /* 235 */
296 AUE_NULL, /* 236 */
297 AUE_NULL, /* 237 */
298 AUE_NULL, /* 238 */
299 AUE_NULL, /* 239 */
300 AUE_NULL, /* 240 */
301 AUE_NULL, /* 241 */
302 AUE_NULL, /* 242 = fsctl */
303 AUE_NULL, /* 243 */
304 AUE_NULL, /* 244 */
305 AUE_NULL, /* 245 */
306 AUE_NULL, /* 246 */
307 AUE_NULL, /* 247 = nfsclnt*/
308 AUE_NULL, /* 248 = fhopen */
309 AUE_NULL, /* 249 */
310 AUE_NULL, /* 250 = minherit */
311 AUE_NULL, /* 251 = semsys */
312 AUE_NULL, /* 252 = msgsys */
313 AUE_NULL, /* 253 = shmsys */
314 AUE_SEMCTL, /* 254 = semctl */
315 AUE_SEMGET, /* 255 = semget */
316 AUE_SEMOP, /* 256 = semop */
317 AUE_NULL, /* 257 = semconfig */
318 AUE_MSGCTL, /* 258 = msgctl */
319 AUE_MSGGET, /* 259 = msgget */
320 AUE_MSGSND, /* 260 = msgsnd */
321 AUE_MSGRCV, /* 261 = msgrcv */
322 AUE_SHMAT, /* 262 = shmat */
323 AUE_SHMCTL, /* 263 = shmctl */
324 AUE_SHMDT, /* 264 = shmdt */
325 AUE_SHMGET, /* 265 = shmget */
326 AUE_NULL, /* 266 = shm_open */
327 AUE_NULL, /* 267 = shm_unlink */
328 AUE_NULL, /* 268 = sem_open */
329 AUE_NULL, /* 269 = sem_close */
330 AUE_NULL, /* 270 = sem_unlink */
331 AUE_NULL, /* 271 = sem_wait */
332 AUE_NULL, /* 272 = sem_trywait */
333 AUE_NULL, /* 273 = sem_post */
334 AUE_NULL, /* 274 = sem_getvalue */
335 AUE_NULL, /* 275 = sem_init */
336 AUE_NULL, /* 276 = sem_destroy */
337 AUE_NULL, /* 277 */
338 AUE_NULL, /* 278 */
339 AUE_NULL, /* 279 */
340 AUE_NULL, /* 280 */
341 AUE_NULL, /* 281 */
342 AUE_NULL, /* 282 */
343 AUE_NULL, /* 283 */
344 AUE_NULL, /* 284 */
345 AUE_NULL, /* 285 */
346 AUE_NULL, /* 286 */
347 AUE_NULL, /* 287 */
348 AUE_NULL, /* 288 */
349 AUE_NULL, /* 289 */
350 AUE_NULL, /* 290 */
351 AUE_NULL, /* 291 */
352 AUE_NULL, /* 292 */
353 AUE_NULL, /* 293 */
354 AUE_NULL, /* 294 */
355 AUE_NULL, /* 295 */
356 AUE_NULL, /* 296 = load_shared_file */
357 AUE_NULL, /* 297 = reset_shared_file */
358 AUE_NULL, /* 298 = new_system_shared_regions */
359 AUE_NULL, /* 299 */
360 AUE_NULL, /* 300 */
361 AUE_NULL, /* 301 */
362 AUE_NULL, /* 302 */
363 AUE_NULL, /* 303 */
364 AUE_NULL, /* 304 */
365 AUE_NULL, /* 305 */
366 AUE_NULL, /* 306 */
367 AUE_NULL, /* 307 */
368 AUE_NULL, /* 308 */
369 AUE_NULL, /* 309 */
370 AUE_NULL, /* 310 = getsid */
371 AUE_NULL, /* 311 */
372 AUE_NULL, /* 312 */
373 AUE_NULL, /* 313 */
374 AUE_NULL, /* 314 */
375 AUE_NULL, /* 315 */
376 AUE_NULL, /* 316 */
377 AUE_NULL, /* 317 */
378 AUE_NULL, /* 318 */
379 AUE_NULL, /* 319 */
380 AUE_NULL, /* 320 */
381 AUE_NULL, /* 321 */
382 AUE_NULL, /* 322 */
383 AUE_NULL, /* 323 */
384 AUE_NULL, /* 324 = mlockall*/
385 AUE_NULL, /* 325 = munlockall*/
386 AUE_NULL, /* 326 */
387 AUE_NULL, /* 327 = issetugid */
388 AUE_NULL, /* 328 */
389 AUE_NULL, /* 329 */
390 AUE_NULL, /* 330 */
391 AUE_NULL, /* 331 */
392 AUE_NULL, /* 332 */
393 AUE_NULL, /* 333 */
394 AUE_NULL, /* 334 */
395 AUE_NULL, /* 335 = utrace */
396 AUE_NULL, /* 336 */
397 AUE_NULL, /* 337 */
398 AUE_NULL, /* 338 */
399 AUE_NULL, /* 339 */
400 AUE_NULL, /* 340 */
401 AUE_NULL, /* 341 */
402 AUE_NULL, /* 342 */
403 AUE_NULL, /* 343 */
404 AUE_NULL, /* 344 */
405 AUE_NULL, /* 345 */
406 AUE_NULL, /* 346 */
407 AUE_NULL, /* 347 */
408 AUE_NULL, /* 348 */
409 AUE_NULL, /* 349 */
410 AUE_AUDIT, /* 350 */
411 AUE_NULL, /* 351 */
412 AUE_NULL, /* 352 */
413 AUE_GETAUID, /* 353 */
414 AUE_SETAUID, /* 354 */
415 AUE_NULL, /* 355 */
416 AUE_NULL, /* 356 */
417 AUE_NULL, /* 357 */
418 AUE_NULL, /* 358 */
419 AUE_NULL, /* 359 */
420 AUE_NULL, /* 360 */
421 AUE_NULL, /* 361 */
422 AUE_NULL, /* 362 = kqueue */
423 AUE_NULL, /* 363 = kevent */
424 AUE_NULL, /* 364 */
425 AUE_NULL, /* 365 */
426 AUE_NULL, /* 366 */
427 AUE_NULL, /* 367 */
428 AUE_NULL, /* 368 */
429 AUE_NULL /* 369 */
430};
431int nsys_au_event = sizeof(sys_au_event) / sizeof(sys_au_event[0]);
432
433/*
434 * Check whether an event is aditable by comparing the mask of classes this
435 * event is part of against the kernel's preselection mask the given mask
436 * which will be the process event mask.
437 *
438 * XXX This needs to eventually implement the selection based on the
439 * event->class mapping that is controlled by a configuration file.
440 */
441int au_preselect(au_event_t event, au_mask_t *mask_p, int sorf)
442{
443 au_class_t ae_class;
444 au_class_t effmask = 0;
445
446 if(mask_p == NULL)
447 return (-1);
448
449 /*
450 * XXX Set the event class using a big ugly switch statement. This
451 * will change to use the mapping defined by a configuration file.
452 */
453 switch (event) {
454 case AUE_MMAP:
455 case AUE_PIPE:
456 /* mmap() and pipe() are AU_NULL in some systems; we'll
457 * place them in AU_IPC for now.
458 */
459 ae_class = AU_IPC; break;
460 case AUE_READLINK:
461 case AUE_GETDIRENTRIES:
462 ae_class = AU_FREAD; break;
463 case AUE_ACCESS:
464 case AUE_FSTAT:
465 case AUE_FSTATFS:
466 case AUE_GETFH:
467 case AUE_LSTAT:
468 case AUE_FPATHCONF:
469 case AUE_PATHCONF:
470 case AUE_STAT:
471 case AUE_STATFS:
472 case AUE_GETATTRLIST:
473 case AUE_GETFSSTAT:
474 case AUE_GETDIRENTRIESATTR:
475 case AUE_SEARCHFS:
476 ae_class = AU_FACCESS; break;
477 case AUE_CHMOD:
478 case AUE_CHOWN:
479 case AUE_FCHMOD:
480 case AUE_FCHOWN:
481 case AUE_FCNTL:
482 case AUE_FLOCK:
483 case AUE_UTIMES:
484 case AUE_CHFLAGS:
485 case AUE_FCHFLAGS:
486 case AUE_FUTIMES:
487 case AUE_SETATTRLIST:
488 case AUE_TRUNCATE:
489 case AUE_FTRUNCATE:
490 case AUE_UNDELETE:
491 case AUE_EXCHANGEDATA:
492 ae_class = AU_FMODIFY; break;
493 case AUE_LINK:
494 case AUE_MKDIR:
495 case AUE_MKNOD:
496 case AUE_SYMLINK:
497 case AUE_MKFIFO:
498 ae_class = AU_FCREATE; break;
499 case AUE_RMDIR:
500 case AUE_UNLINK:
501 ae_class = AU_FDELETE; break;
502 case AUE_CLOSE:
503 case AUE_MUNMAP:
504 case AUE_REVOKE:
505 ae_class = AU_CLOSE; break;
506 case AUE_CHDIR:
507 case AUE_CHROOT:
508 case AUE_EXIT:
509 case AUE_FCHDIR:
510 case AUE_FORK:
511 case AUE_KILL:
512 case AUE_SETEGID:
513 case AUE_SETEUID:
514 case AUE_SETGID:
515 case AUE_SETGROUPS:
516 case AUE_SETPGRP:
517 case AUE_SETUID:
518 case AUE_VFORK:
519 case AUE_UMASK:
520 ae_class = AU_PROCESS; break;
521 case AUE_ACCEPT:
522 case AUE_BIND:
523 case AUE_CONNECT:
524 case AUE_RECVFROM:
525 case AUE_RECVMSG:
526 case AUE_SENDMSG:
527 case AUE_SENDTO:
528 case AUE_SETSOCKOPT:
529 case AUE_SHUTDOWN:
530 case AUE_SOCKET:
531 case AUE_SOCKETPAIR:
532 ae_class = AU_NET; break;
533 case AUE_MSGCTL:
534 case AUE_MSGGET:
535 case AUE_MSGRCV:
536 case AUE_MSGSND:
537 case AUE_SEMCTL:
538 case AUE_SEMGET:
539 case AUE_SEMOP:
540 case AUE_SHMAT:
541 case AUE_SHMCTL:
542 case AUE_SHMDT:
543 case AUE_SHMGET:
544 ae_class = AU_IPC; break;
545 case AUE_ACCT:
546 case AUE_ADJTIME:
547 case AUE_GETAUID:
548 case AUE_MOUNT:
549 case AUE_SETAUID:
550 case AUE_SETRLIMIT:
551 case AUE_UMOUNT:
552 ae_class = AU_ADMIN; break;
553 case AUE_IOCTL:
554 ae_class = AU_IOCTL; break;
555 case AUE_EXECVE:
556 ae_class = AU_PROCESS|AU_EXEC; break;
557 case AUE_OPEN_R:
558 ae_class = AU_FREAD; break;
559 case AUE_OPEN_RC:
560 ae_class = AU_FREAD|AU_FCREATE; break;
561 case AUE_OPEN_RTC:
562 ae_class = AU_FREAD|AU_FCREATE|AU_FDELETE; break;
563 case AUE_OPEN_RT:
564 ae_class = AU_FREAD|AU_FDELETE; break;
565 case AUE_OPEN_RW:
566 ae_class = AU_FREAD|AU_FWRITE; break;
567 case AUE_OPEN_RWC:
568 ae_class = AU_FREAD|AU_FWRITE|AU_FCREATE; break;
569 case AUE_OPEN_RWTC:
570 ae_class = AU_FREAD|AU_FWRITE|AU_FCREATE|AU_FDELETE; break;
571 case AUE_OPEN_RWT:
572 ae_class = AU_FREAD|AU_FWRITE|AU_FDELETE; break;
573 case AUE_OPEN_W:
574 ae_class = AU_FWRITE; break;
575 case AUE_OPEN_WC:
576 ae_class = AU_FWRITE|AU_FCREATE; break;
577 case AUE_OPEN_WTC:
578 ae_class = AU_FWRITE|AU_FCREATE|AU_FDELETE; break;
579 case AUE_OPEN_WT:
580 ae_class = AU_FWRITE|AU_FDELETE; break;
581 case AUE_RENAME:
582 ae_class = AU_FCREATE|AU_FDELETE; break;
583 default: /* Assign the event to all classes */
584 ae_class = AU_ALL; break;
585 }
586
587 /*
588 * Perform the actual check of the masks against the event.
589 */
590 /*
591 * XXX Need to compare against the kernel mask??? Or do we not do
592 * that by default and let the client code just call this function
593 * with the kernel preselection mask as the mask parameter?
594 */
595 if(sorf & AU_PRS_SUCCESS) {
596 effmask |= (mask_p->am_success & ae_class);
597 }
598
599 if(sorf & AU_PRS_FAILURE) {
600 effmask |= (mask_p->am_failure & ae_class);
601 }
602
603 if(effmask)
604 return (1);
605 else
606 return (0);
607}
608
609/*
610 * Convert an open flags specifier into a specific type of open event for
611 * auditing purposes.
612 */
613au_event_t flags_to_openevent(int oflags) {
614
615 /* Need to check only those flags we care about. */
616 oflags = oflags & (O_RDONLY | O_CREAT | O_TRUNC | O_RDWR | O_WRONLY);
617
618 /* These checks determine what flags are on with the condition
619 * that ONLY that combination is on, and no other flags are on.
620 */
621 if (!(oflags ^ O_RDONLY))
622 return AUE_OPEN_R;
623 if (!(oflags ^ (O_RDONLY | O_CREAT)))
624 return AUE_OPEN_RC;
625 if (!(oflags ^ (O_RDONLY | O_CREAT | O_TRUNC)))
626 return AUE_OPEN_RTC;
627 if (!(oflags ^ (O_RDONLY | O_TRUNC)))
628 return AUE_OPEN_RT;
629 if (!(oflags ^ O_RDWR))
630 return AUE_OPEN_RW;
631 if (!(oflags ^ (O_RDWR | O_CREAT)))
632 return AUE_OPEN_RWC;
633 if (!(oflags ^ (O_RDWR | O_CREAT | O_TRUNC)))
634 return AUE_OPEN_RWTC;
635 if (!(oflags ^ (O_RDWR | O_TRUNC)))
636 return AUE_OPEN_RWT;
637 if (!(oflags ^ O_WRONLY))
638 return AUE_OPEN_W;
639 if (!(oflags ^ (O_WRONLY | O_CREAT)))
640 return AUE_OPEN_WC;
641 if (!(oflags ^ (O_WRONLY | O_CREAT | O_TRUNC)))
642 return AUE_OPEN_WTC;
643 if (!(oflags ^ (O_WRONLY | O_TRUNC)))
644 return AUE_OPEN_WT;
645
646 return AUE_OPEN_R;
647}
648
649/*
650 * Fill in a vattr struct from kernel audit record fields. This function
651 * would be unecessary if we store a vattr in the kernel audit record
652 * directly.
653*/
654void fill_vattr(struct vattr *v, struct vnode_au_info *vn_info)
655{
656 v->va_mode = vn_info->vn_mode;
657 v->va_uid = vn_info->vn_uid;
658 v->va_gid = vn_info->vn_gid;
659 v->va_fsid = vn_info->vn_fsid;
660 v->va_fileid = vn_info->vn_fileid;
661 v->va_rdev = vn_info->vn_dev;
662}
663
664/* Convert a MSGCTL command to a specific event. */
665int msgctl_to_event(int cmd)
666{
667 switch (cmd) {
668 case IPC_RMID:
669 return AUE_MSGCTL_RMID;
670 case IPC_SET:
671 return AUE_MSGCTL_SET;
672 case IPC_STAT:
673 return AUE_MSGCTL_STAT;
674 default:
675 return AUE_MSGCTL;
676 /* We will audit a bad command */
677 }
678}
679
680/* Convert a SEMCTL command to a specific event. */
681int semctl_to_event(int cmd)
682{
683 switch (cmd) {
684 case GETALL:
685 return AUE_SEMCTL_GETALL;
686 case GETNCNT:
687 return AUE_SEMCTL_GETNCNT;
688 case GETPID:
689 return AUE_SEMCTL_GETPID;
690 case GETVAL:
691 return AUE_SEMCTL_GETVAL;
692 case GETZCNT:
693 return AUE_SEMCTL_GETZCNT;
694 case IPC_RMID:
695 return AUE_SEMCTL_RMID;
696 case IPC_SET:
697 return AUE_SEMCTL_SET;
698 case SETALL:
699 return AUE_SEMCTL_SETALL;
700 case SETVAL:
701 return AUE_SEMCTL_SETVAL;
702 case IPC_STAT:
703 return AUE_SEMCTL_STAT;
704 default:
705 return AUE_SEMCTL;
706 /* We will audit a bad command */
707 }
708}
709
710/*
711 * Create a canonical path from given path by prefixing either the
712 * root directory, or the current working directory.
713 * If the process working directory is NULL, we could use 'rootvnode'
714 * to obtain the root directoty, but this results in a volfs name
715 * written to the audit log. So we will leave the filename starting
716 * with '/' in the audit log in this case.
717 */
718void canon_path(struct proc *p, char *path, char *cpath)
719{
720 char *bufp;
721 int len;
722 struct vnode *vnp;
723 struct filedesc *fdp;
724
725 fdp = p->p_fd;
726 bufp = path;
727 if (*(path) == '/') {
728 while (*(bufp) == '/')
729 bufp++; /* skip leading '/'s */
730 /* If no process root, or it is the same as the system root,
731 * audit the path as passed in with a single '/'.
732 */
733 if ((fdp->fd_rdir == NULL) ||
734 (fdp->fd_rdir == rootvnode)) {
735 vnp = NULL;
736 bufp--; /* restore one '/' */
737 } else {
738 vnp = fdp->fd_rdir; /* use process root */
739 }
740 } else {
741 vnp = fdp->fd_cdir; /* prepend the current dir */
742 bufp = path;
743 }
744 if (vnp != NULL) {
745 len = MAXPATHLEN;
746 vn_getpath(vnp, cpath, &len);
747 /* The length returned by vn_getpath() is two greater than the
748 * number of characters in the string.
749 */
750 if (len < MAXPATHLEN)
751 cpath[len-2] = '/';
752 strncpy(cpath + len-1, bufp, MAXPATHLEN - len);
753 } else {
754 strncpy(cpath, bufp, MAXPATHLEN);
755 }
756}
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