Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * Stub functions for the default security function pointers in case no | |
3 | * security model is loaded. | |
4 | * | |
5 | * Copyright (C) 2001 WireX Communications, Inc <chris@wirex.com> | |
6 | * Copyright (C) 2001-2002 Greg Kroah-Hartman <greg@kroah.com> | |
7 | * Copyright (C) 2001 Networks Associates Technology, Inc <ssmalley@nai.com> | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License as published by | |
11 | * the Free Software Foundation; either version 2 of the License, or | |
12 | * (at your option) any later version. | |
13 | */ | |
14 | ||
15 | #undef DEBUG | |
16 | ||
c59ede7b | 17 | #include <linux/capability.h> |
1da177e4 LT |
18 | #include <linux/config.h> |
19 | #include <linux/module.h> | |
20 | #include <linux/kernel.h> | |
21 | #include <linux/mman.h> | |
22 | #include <linux/pagemap.h> | |
23 | #include <linux/swap.h> | |
24 | #include <linux/security.h> | |
25 | #include <linux/skbuff.h> | |
26 | #include <linux/netlink.h> | |
27 | #include <net/sock.h> | |
28 | #include <linux/xattr.h> | |
29 | #include <linux/hugetlb.h> | |
30 | #include <linux/ptrace.h> | |
31 | #include <linux/file.h> | |
32 | ||
33 | static int dummy_ptrace (struct task_struct *parent, struct task_struct *child) | |
34 | { | |
35 | return 0; | |
36 | } | |
37 | ||
38 | static int dummy_capget (struct task_struct *target, kernel_cap_t * effective, | |
39 | kernel_cap_t * inheritable, kernel_cap_t * permitted) | |
40 | { | |
41 | *effective = *inheritable = *permitted = 0; | |
42 | if (!issecure(SECURE_NOROOT)) { | |
43 | if (target->euid == 0) { | |
44 | *permitted |= (~0 & ~CAP_FS_MASK); | |
45 | *effective |= (~0 & ~CAP_TO_MASK(CAP_SETPCAP) & ~CAP_FS_MASK); | |
46 | } | |
47 | if (target->fsuid == 0) { | |
48 | *permitted |= CAP_FS_MASK; | |
49 | *effective |= CAP_FS_MASK; | |
50 | } | |
51 | } | |
52 | return 0; | |
53 | } | |
54 | ||
55 | static int dummy_capset_check (struct task_struct *target, | |
56 | kernel_cap_t * effective, | |
57 | kernel_cap_t * inheritable, | |
58 | kernel_cap_t * permitted) | |
59 | { | |
60 | return -EPERM; | |
61 | } | |
62 | ||
63 | static void dummy_capset_set (struct task_struct *target, | |
64 | kernel_cap_t * effective, | |
65 | kernel_cap_t * inheritable, | |
66 | kernel_cap_t * permitted) | |
67 | { | |
68 | return; | |
69 | } | |
70 | ||
71 | static int dummy_acct (struct file *file) | |
72 | { | |
73 | return 0; | |
74 | } | |
75 | ||
76 | static int dummy_capable (struct task_struct *tsk, int cap) | |
77 | { | |
78 | if (cap_raised (tsk->cap_effective, cap)) | |
79 | return 0; | |
80 | return -EPERM; | |
81 | } | |
82 | ||
83 | static int dummy_sysctl (ctl_table * table, int op) | |
84 | { | |
85 | return 0; | |
86 | } | |
87 | ||
88 | static int dummy_quotactl (int cmds, int type, int id, struct super_block *sb) | |
89 | { | |
90 | return 0; | |
91 | } | |
92 | ||
93 | static int dummy_quota_on (struct dentry *dentry) | |
94 | { | |
95 | return 0; | |
96 | } | |
97 | ||
98 | static int dummy_syslog (int type) | |
99 | { | |
100 | if ((type != 3 && type != 10) && current->euid) | |
101 | return -EPERM; | |
102 | return 0; | |
103 | } | |
104 | ||
105 | static int dummy_settime(struct timespec *ts, struct timezone *tz) | |
106 | { | |
107 | if (!capable(CAP_SYS_TIME)) | |
108 | return -EPERM; | |
109 | return 0; | |
110 | } | |
111 | ||
112 | static int dummy_vm_enough_memory(long pages) | |
113 | { | |
114 | int cap_sys_admin = 0; | |
115 | ||
116 | if (dummy_capable(current, CAP_SYS_ADMIN) == 0) | |
117 | cap_sys_admin = 1; | |
118 | return __vm_enough_memory(pages, cap_sys_admin); | |
119 | } | |
120 | ||
121 | static int dummy_bprm_alloc_security (struct linux_binprm *bprm) | |
122 | { | |
123 | return 0; | |
124 | } | |
125 | ||
126 | static void dummy_bprm_free_security (struct linux_binprm *bprm) | |
127 | { | |
128 | return; | |
129 | } | |
130 | ||
131 | static void dummy_bprm_apply_creds (struct linux_binprm *bprm, int unsafe) | |
132 | { | |
133 | if (bprm->e_uid != current->uid || bprm->e_gid != current->gid) { | |
d6e71144 | 134 | current->mm->dumpable = suid_dumpable; |
1da177e4 LT |
135 | |
136 | if ((unsafe & ~LSM_UNSAFE_PTRACE_CAP) && !capable(CAP_SETUID)) { | |
137 | bprm->e_uid = current->uid; | |
138 | bprm->e_gid = current->gid; | |
139 | } | |
140 | } | |
141 | ||
142 | current->suid = current->euid = current->fsuid = bprm->e_uid; | |
143 | current->sgid = current->egid = current->fsgid = bprm->e_gid; | |
144 | ||
145 | dummy_capget(current, ¤t->cap_effective, ¤t->cap_inheritable, ¤t->cap_permitted); | |
146 | } | |
147 | ||
148 | static void dummy_bprm_post_apply_creds (struct linux_binprm *bprm) | |
149 | { | |
150 | return; | |
151 | } | |
152 | ||
153 | static int dummy_bprm_set_security (struct linux_binprm *bprm) | |
154 | { | |
155 | return 0; | |
156 | } | |
157 | ||
158 | static int dummy_bprm_check_security (struct linux_binprm *bprm) | |
159 | { | |
160 | return 0; | |
161 | } | |
162 | ||
163 | static int dummy_bprm_secureexec (struct linux_binprm *bprm) | |
164 | { | |
165 | /* The new userland will simply use the value provided | |
166 | in the AT_SECURE field to decide whether secure mode | |
167 | is required. Hence, this logic is required to preserve | |
168 | the legacy decision algorithm used by the old userland. */ | |
169 | return (current->euid != current->uid || | |
170 | current->egid != current->gid); | |
171 | } | |
172 | ||
173 | static int dummy_sb_alloc_security (struct super_block *sb) | |
174 | { | |
175 | return 0; | |
176 | } | |
177 | ||
178 | static void dummy_sb_free_security (struct super_block *sb) | |
179 | { | |
180 | return; | |
181 | } | |
182 | ||
183 | static int dummy_sb_copy_data (struct file_system_type *type, | |
184 | void *orig, void *copy) | |
185 | { | |
186 | return 0; | |
187 | } | |
188 | ||
189 | static int dummy_sb_kern_mount (struct super_block *sb, void *data) | |
190 | { | |
191 | return 0; | |
192 | } | |
193 | ||
726c3342 | 194 | static int dummy_sb_statfs (struct dentry *dentry) |
1da177e4 LT |
195 | { |
196 | return 0; | |
197 | } | |
198 | ||
199 | static int dummy_sb_mount (char *dev_name, struct nameidata *nd, char *type, | |
200 | unsigned long flags, void *data) | |
201 | { | |
202 | return 0; | |
203 | } | |
204 | ||
205 | static int dummy_sb_check_sb (struct vfsmount *mnt, struct nameidata *nd) | |
206 | { | |
207 | return 0; | |
208 | } | |
209 | ||
210 | static int dummy_sb_umount (struct vfsmount *mnt, int flags) | |
211 | { | |
212 | return 0; | |
213 | } | |
214 | ||
215 | static void dummy_sb_umount_close (struct vfsmount *mnt) | |
216 | { | |
217 | return; | |
218 | } | |
219 | ||
220 | static void dummy_sb_umount_busy (struct vfsmount *mnt) | |
221 | { | |
222 | return; | |
223 | } | |
224 | ||
225 | static void dummy_sb_post_remount (struct vfsmount *mnt, unsigned long flags, | |
226 | void *data) | |
227 | { | |
228 | return; | |
229 | } | |
230 | ||
231 | ||
232 | static void dummy_sb_post_mountroot (void) | |
233 | { | |
234 | return; | |
235 | } | |
236 | ||
237 | static void dummy_sb_post_addmount (struct vfsmount *mnt, struct nameidata *nd) | |
238 | { | |
239 | return; | |
240 | } | |
241 | ||
242 | static int dummy_sb_pivotroot (struct nameidata *old_nd, struct nameidata *new_nd) | |
243 | { | |
244 | return 0; | |
245 | } | |
246 | ||
247 | static void dummy_sb_post_pivotroot (struct nameidata *old_nd, struct nameidata *new_nd) | |
248 | { | |
249 | return; | |
250 | } | |
251 | ||
252 | static int dummy_inode_alloc_security (struct inode *inode) | |
253 | { | |
254 | return 0; | |
255 | } | |
256 | ||
257 | static void dummy_inode_free_security (struct inode *inode) | |
258 | { | |
259 | return; | |
260 | } | |
261 | ||
5e41ff9e SS |
262 | static int dummy_inode_init_security (struct inode *inode, struct inode *dir, |
263 | char **name, void **value, size_t *len) | |
264 | { | |
265 | return -EOPNOTSUPP; | |
266 | } | |
267 | ||
1da177e4 LT |
268 | static int dummy_inode_create (struct inode *inode, struct dentry *dentry, |
269 | int mask) | |
270 | { | |
271 | return 0; | |
272 | } | |
273 | ||
1da177e4 LT |
274 | static int dummy_inode_link (struct dentry *old_dentry, struct inode *inode, |
275 | struct dentry *new_dentry) | |
276 | { | |
277 | return 0; | |
278 | } | |
279 | ||
1da177e4 LT |
280 | static int dummy_inode_unlink (struct inode *inode, struct dentry *dentry) |
281 | { | |
282 | return 0; | |
283 | } | |
284 | ||
285 | static int dummy_inode_symlink (struct inode *inode, struct dentry *dentry, | |
286 | const char *name) | |
287 | { | |
288 | return 0; | |
289 | } | |
290 | ||
1da177e4 LT |
291 | static int dummy_inode_mkdir (struct inode *inode, struct dentry *dentry, |
292 | int mask) | |
293 | { | |
294 | return 0; | |
295 | } | |
296 | ||
1da177e4 LT |
297 | static int dummy_inode_rmdir (struct inode *inode, struct dentry *dentry) |
298 | { | |
299 | return 0; | |
300 | } | |
301 | ||
302 | static int dummy_inode_mknod (struct inode *inode, struct dentry *dentry, | |
303 | int mode, dev_t dev) | |
304 | { | |
305 | return 0; | |
306 | } | |
307 | ||
1da177e4 LT |
308 | static int dummy_inode_rename (struct inode *old_inode, |
309 | struct dentry *old_dentry, | |
310 | struct inode *new_inode, | |
311 | struct dentry *new_dentry) | |
312 | { | |
313 | return 0; | |
314 | } | |
315 | ||
1da177e4 LT |
316 | static int dummy_inode_readlink (struct dentry *dentry) |
317 | { | |
318 | return 0; | |
319 | } | |
320 | ||
321 | static int dummy_inode_follow_link (struct dentry *dentry, | |
322 | struct nameidata *nameidata) | |
323 | { | |
324 | return 0; | |
325 | } | |
326 | ||
327 | static int dummy_inode_permission (struct inode *inode, int mask, struct nameidata *nd) | |
328 | { | |
329 | return 0; | |
330 | } | |
331 | ||
332 | static int dummy_inode_setattr (struct dentry *dentry, struct iattr *iattr) | |
333 | { | |
334 | return 0; | |
335 | } | |
336 | ||
337 | static int dummy_inode_getattr (struct vfsmount *mnt, struct dentry *dentry) | |
338 | { | |
339 | return 0; | |
340 | } | |
341 | ||
342 | static void dummy_inode_delete (struct inode *ino) | |
343 | { | |
344 | return; | |
345 | } | |
346 | ||
347 | static int dummy_inode_setxattr (struct dentry *dentry, char *name, void *value, | |
348 | size_t size, int flags) | |
349 | { | |
350 | if (!strncmp(name, XATTR_SECURITY_PREFIX, | |
351 | sizeof(XATTR_SECURITY_PREFIX) - 1) && | |
352 | !capable(CAP_SYS_ADMIN)) | |
353 | return -EPERM; | |
354 | return 0; | |
355 | } | |
356 | ||
357 | static void dummy_inode_post_setxattr (struct dentry *dentry, char *name, void *value, | |
358 | size_t size, int flags) | |
359 | { | |
360 | } | |
361 | ||
362 | static int dummy_inode_getxattr (struct dentry *dentry, char *name) | |
363 | { | |
364 | return 0; | |
365 | } | |
366 | ||
367 | static int dummy_inode_listxattr (struct dentry *dentry) | |
368 | { | |
369 | return 0; | |
370 | } | |
371 | ||
372 | static int dummy_inode_removexattr (struct dentry *dentry, char *name) | |
373 | { | |
374 | if (!strncmp(name, XATTR_SECURITY_PREFIX, | |
375 | sizeof(XATTR_SECURITY_PREFIX) - 1) && | |
376 | !capable(CAP_SYS_ADMIN)) | |
377 | return -EPERM; | |
378 | return 0; | |
379 | } | |
380 | ||
7306a0b9 | 381 | static int dummy_inode_getsecurity(const struct inode *inode, const char *name, void *buffer, size_t size, int err) |
1da177e4 LT |
382 | { |
383 | return -EOPNOTSUPP; | |
384 | } | |
385 | ||
386 | static int dummy_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags) | |
387 | { | |
388 | return -EOPNOTSUPP; | |
389 | } | |
390 | ||
391 | static int dummy_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size) | |
392 | { | |
393 | return 0; | |
394 | } | |
395 | ||
7306a0b9 DK |
396 | static const char *dummy_inode_xattr_getsuffix(void) |
397 | { | |
398 | return NULL; | |
399 | } | |
400 | ||
1da177e4 LT |
401 | static int dummy_file_permission (struct file *file, int mask) |
402 | { | |
403 | return 0; | |
404 | } | |
405 | ||
406 | static int dummy_file_alloc_security (struct file *file) | |
407 | { | |
408 | return 0; | |
409 | } | |
410 | ||
411 | static void dummy_file_free_security (struct file *file) | |
412 | { | |
413 | return; | |
414 | } | |
415 | ||
416 | static int dummy_file_ioctl (struct file *file, unsigned int command, | |
417 | unsigned long arg) | |
418 | { | |
419 | return 0; | |
420 | } | |
421 | ||
422 | static int dummy_file_mmap (struct file *file, unsigned long reqprot, | |
423 | unsigned long prot, | |
424 | unsigned long flags) | |
425 | { | |
426 | return 0; | |
427 | } | |
428 | ||
429 | static int dummy_file_mprotect (struct vm_area_struct *vma, | |
430 | unsigned long reqprot, | |
431 | unsigned long prot) | |
432 | { | |
433 | return 0; | |
434 | } | |
435 | ||
436 | static int dummy_file_lock (struct file *file, unsigned int cmd) | |
437 | { | |
438 | return 0; | |
439 | } | |
440 | ||
441 | static int dummy_file_fcntl (struct file *file, unsigned int cmd, | |
442 | unsigned long arg) | |
443 | { | |
444 | return 0; | |
445 | } | |
446 | ||
447 | static int dummy_file_set_fowner (struct file *file) | |
448 | { | |
449 | return 0; | |
450 | } | |
451 | ||
452 | static int dummy_file_send_sigiotask (struct task_struct *tsk, | |
453 | struct fown_struct *fown, int sig) | |
454 | { | |
455 | return 0; | |
456 | } | |
457 | ||
458 | static int dummy_file_receive (struct file *file) | |
459 | { | |
460 | return 0; | |
461 | } | |
462 | ||
463 | static int dummy_task_create (unsigned long clone_flags) | |
464 | { | |
465 | return 0; | |
466 | } | |
467 | ||
468 | static int dummy_task_alloc_security (struct task_struct *p) | |
469 | { | |
470 | return 0; | |
471 | } | |
472 | ||
473 | static void dummy_task_free_security (struct task_struct *p) | |
474 | { | |
475 | return; | |
476 | } | |
477 | ||
478 | static int dummy_task_setuid (uid_t id0, uid_t id1, uid_t id2, int flags) | |
479 | { | |
480 | return 0; | |
481 | } | |
482 | ||
483 | static int dummy_task_post_setuid (uid_t id0, uid_t id1, uid_t id2, int flags) | |
484 | { | |
485 | dummy_capget(current, ¤t->cap_effective, ¤t->cap_inheritable, ¤t->cap_permitted); | |
486 | return 0; | |
487 | } | |
488 | ||
489 | static int dummy_task_setgid (gid_t id0, gid_t id1, gid_t id2, int flags) | |
490 | { | |
491 | return 0; | |
492 | } | |
493 | ||
494 | static int dummy_task_setpgid (struct task_struct *p, pid_t pgid) | |
495 | { | |
496 | return 0; | |
497 | } | |
498 | ||
499 | static int dummy_task_getpgid (struct task_struct *p) | |
500 | { | |
501 | return 0; | |
502 | } | |
503 | ||
504 | static int dummy_task_getsid (struct task_struct *p) | |
505 | { | |
506 | return 0; | |
507 | } | |
508 | ||
509 | static int dummy_task_setgroups (struct group_info *group_info) | |
510 | { | |
511 | return 0; | |
512 | } | |
513 | ||
514 | static int dummy_task_setnice (struct task_struct *p, int nice) | |
515 | { | |
516 | return 0; | |
517 | } | |
518 | ||
519 | static int dummy_task_setrlimit (unsigned int resource, struct rlimit *new_rlim) | |
520 | { | |
521 | return 0; | |
522 | } | |
523 | ||
524 | static int dummy_task_setscheduler (struct task_struct *p, int policy, | |
525 | struct sched_param *lp) | |
526 | { | |
527 | return 0; | |
528 | } | |
529 | ||
530 | static int dummy_task_getscheduler (struct task_struct *p) | |
531 | { | |
532 | return 0; | |
533 | } | |
534 | ||
535 | static int dummy_task_wait (struct task_struct *p) | |
536 | { | |
537 | return 0; | |
538 | } | |
539 | ||
540 | static int dummy_task_kill (struct task_struct *p, struct siginfo *info, | |
541 | int sig) | |
542 | { | |
543 | return 0; | |
544 | } | |
545 | ||
546 | static int dummy_task_prctl (int option, unsigned long arg2, unsigned long arg3, | |
547 | unsigned long arg4, unsigned long arg5) | |
548 | { | |
549 | return 0; | |
550 | } | |
551 | ||
552 | static void dummy_task_reparent_to_init (struct task_struct *p) | |
553 | { | |
554 | p->euid = p->fsuid = 0; | |
555 | return; | |
556 | } | |
557 | ||
558 | static void dummy_task_to_inode(struct task_struct *p, struct inode *inode) | |
559 | { } | |
560 | ||
561 | static int dummy_ipc_permission (struct kern_ipc_perm *ipcp, short flag) | |
562 | { | |
563 | return 0; | |
564 | } | |
565 | ||
566 | static int dummy_msg_msg_alloc_security (struct msg_msg *msg) | |
567 | { | |
568 | return 0; | |
569 | } | |
570 | ||
571 | static void dummy_msg_msg_free_security (struct msg_msg *msg) | |
572 | { | |
573 | return; | |
574 | } | |
575 | ||
576 | static int dummy_msg_queue_alloc_security (struct msg_queue *msq) | |
577 | { | |
578 | return 0; | |
579 | } | |
580 | ||
581 | static void dummy_msg_queue_free_security (struct msg_queue *msq) | |
582 | { | |
583 | return; | |
584 | } | |
585 | ||
586 | static int dummy_msg_queue_associate (struct msg_queue *msq, | |
587 | int msqflg) | |
588 | { | |
589 | return 0; | |
590 | } | |
591 | ||
592 | static int dummy_msg_queue_msgctl (struct msg_queue *msq, int cmd) | |
593 | { | |
594 | return 0; | |
595 | } | |
596 | ||
597 | static int dummy_msg_queue_msgsnd (struct msg_queue *msq, struct msg_msg *msg, | |
598 | int msgflg) | |
599 | { | |
600 | return 0; | |
601 | } | |
602 | ||
603 | static int dummy_msg_queue_msgrcv (struct msg_queue *msq, struct msg_msg *msg, | |
604 | struct task_struct *target, long type, | |
605 | int mode) | |
606 | { | |
607 | return 0; | |
608 | } | |
609 | ||
610 | static int dummy_shm_alloc_security (struct shmid_kernel *shp) | |
611 | { | |
612 | return 0; | |
613 | } | |
614 | ||
615 | static void dummy_shm_free_security (struct shmid_kernel *shp) | |
616 | { | |
617 | return; | |
618 | } | |
619 | ||
620 | static int dummy_shm_associate (struct shmid_kernel *shp, int shmflg) | |
621 | { | |
622 | return 0; | |
623 | } | |
624 | ||
625 | static int dummy_shm_shmctl (struct shmid_kernel *shp, int cmd) | |
626 | { | |
627 | return 0; | |
628 | } | |
629 | ||
630 | static int dummy_shm_shmat (struct shmid_kernel *shp, char __user *shmaddr, | |
631 | int shmflg) | |
632 | { | |
633 | return 0; | |
634 | } | |
635 | ||
636 | static int dummy_sem_alloc_security (struct sem_array *sma) | |
637 | { | |
638 | return 0; | |
639 | } | |
640 | ||
641 | static void dummy_sem_free_security (struct sem_array *sma) | |
642 | { | |
643 | return; | |
644 | } | |
645 | ||
646 | static int dummy_sem_associate (struct sem_array *sma, int semflg) | |
647 | { | |
648 | return 0; | |
649 | } | |
650 | ||
651 | static int dummy_sem_semctl (struct sem_array *sma, int cmd) | |
652 | { | |
653 | return 0; | |
654 | } | |
655 | ||
656 | static int dummy_sem_semop (struct sem_array *sma, | |
657 | struct sembuf *sops, unsigned nsops, int alter) | |
658 | { | |
659 | return 0; | |
660 | } | |
661 | ||
662 | static int dummy_netlink_send (struct sock *sk, struct sk_buff *skb) | |
663 | { | |
664 | NETLINK_CB(skb).eff_cap = current->cap_effective; | |
665 | return 0; | |
666 | } | |
667 | ||
668 | static int dummy_netlink_recv (struct sk_buff *skb) | |
669 | { | |
670 | if (!cap_raised (NETLINK_CB (skb).eff_cap, CAP_NET_ADMIN)) | |
671 | return -EPERM; | |
672 | return 0; | |
673 | } | |
674 | ||
675 | #ifdef CONFIG_SECURITY_NETWORK | |
676 | static int dummy_unix_stream_connect (struct socket *sock, | |
677 | struct socket *other, | |
678 | struct sock *newsk) | |
679 | { | |
680 | return 0; | |
681 | } | |
682 | ||
683 | static int dummy_unix_may_send (struct socket *sock, | |
684 | struct socket *other) | |
685 | { | |
686 | return 0; | |
687 | } | |
688 | ||
689 | static int dummy_socket_create (int family, int type, | |
690 | int protocol, int kern) | |
691 | { | |
692 | return 0; | |
693 | } | |
694 | ||
695 | static void dummy_socket_post_create (struct socket *sock, int family, int type, | |
696 | int protocol, int kern) | |
697 | { | |
698 | return; | |
699 | } | |
700 | ||
701 | static int dummy_socket_bind (struct socket *sock, struct sockaddr *address, | |
702 | int addrlen) | |
703 | { | |
704 | return 0; | |
705 | } | |
706 | ||
707 | static int dummy_socket_connect (struct socket *sock, struct sockaddr *address, | |
708 | int addrlen) | |
709 | { | |
710 | return 0; | |
711 | } | |
712 | ||
713 | static int dummy_socket_listen (struct socket *sock, int backlog) | |
714 | { | |
715 | return 0; | |
716 | } | |
717 | ||
718 | static int dummy_socket_accept (struct socket *sock, struct socket *newsock) | |
719 | { | |
720 | return 0; | |
721 | } | |
722 | ||
723 | static void dummy_socket_post_accept (struct socket *sock, | |
724 | struct socket *newsock) | |
725 | { | |
726 | return; | |
727 | } | |
728 | ||
729 | static int dummy_socket_sendmsg (struct socket *sock, struct msghdr *msg, | |
730 | int size) | |
731 | { | |
732 | return 0; | |
733 | } | |
734 | ||
735 | static int dummy_socket_recvmsg (struct socket *sock, struct msghdr *msg, | |
736 | int size, int flags) | |
737 | { | |
738 | return 0; | |
739 | } | |
740 | ||
741 | static int dummy_socket_getsockname (struct socket *sock) | |
742 | { | |
743 | return 0; | |
744 | } | |
745 | ||
746 | static int dummy_socket_getpeername (struct socket *sock) | |
747 | { | |
748 | return 0; | |
749 | } | |
750 | ||
751 | static int dummy_socket_setsockopt (struct socket *sock, int level, int optname) | |
752 | { | |
753 | return 0; | |
754 | } | |
755 | ||
756 | static int dummy_socket_getsockopt (struct socket *sock, int level, int optname) | |
757 | { | |
758 | return 0; | |
759 | } | |
760 | ||
761 | static int dummy_socket_shutdown (struct socket *sock, int how) | |
762 | { | |
763 | return 0; | |
764 | } | |
765 | ||
766 | static int dummy_socket_sock_rcv_skb (struct sock *sk, struct sk_buff *skb) | |
767 | { | |
768 | return 0; | |
769 | } | |
770 | ||
2c7946a7 CZ |
771 | static int dummy_socket_getpeersec_stream(struct socket *sock, char __user *optval, |
772 | int __user *optlen, unsigned len) | |
773 | { | |
774 | return -ENOPROTOOPT; | |
775 | } | |
776 | ||
777 | static int dummy_socket_getpeersec_dgram(struct sk_buff *skb, char **secdata, | |
778 | u32 *seclen) | |
1da177e4 LT |
779 | { |
780 | return -ENOPROTOOPT; | |
781 | } | |
782 | ||
7d877f3b | 783 | static inline int dummy_sk_alloc_security (struct sock *sk, int family, gfp_t priority) |
1da177e4 LT |
784 | { |
785 | return 0; | |
786 | } | |
787 | ||
788 | static inline void dummy_sk_free_security (struct sock *sk) | |
789 | { | |
790 | } | |
df71837d TJ |
791 | |
792 | static unsigned int dummy_sk_getsid(struct sock *sk, struct flowi *fl, u8 dir) | |
793 | { | |
794 | return 0; | |
795 | } | |
1da177e4 LT |
796 | #endif /* CONFIG_SECURITY_NETWORK */ |
797 | ||
df71837d TJ |
798 | #ifdef CONFIG_SECURITY_NETWORK_XFRM |
799 | static int dummy_xfrm_policy_alloc_security(struct xfrm_policy *xp, struct xfrm_user_sec_ctx *sec_ctx) | |
800 | { | |
801 | return 0; | |
802 | } | |
803 | ||
804 | static inline int dummy_xfrm_policy_clone_security(struct xfrm_policy *old, struct xfrm_policy *new) | |
805 | { | |
806 | return 0; | |
807 | } | |
808 | ||
809 | static void dummy_xfrm_policy_free_security(struct xfrm_policy *xp) | |
810 | { | |
811 | } | |
812 | ||
c8c05a8e CZ |
813 | static int dummy_xfrm_policy_delete_security(struct xfrm_policy *xp) |
814 | { | |
815 | return 0; | |
816 | } | |
817 | ||
df71837d TJ |
818 | static int dummy_xfrm_state_alloc_security(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx) |
819 | { | |
820 | return 0; | |
821 | } | |
822 | ||
823 | static void dummy_xfrm_state_free_security(struct xfrm_state *x) | |
824 | { | |
825 | } | |
826 | ||
c8c05a8e CZ |
827 | static int dummy_xfrm_state_delete_security(struct xfrm_state *x) |
828 | { | |
829 | return 0; | |
830 | } | |
831 | ||
df71837d TJ |
832 | static int dummy_xfrm_policy_lookup(struct xfrm_policy *xp, u32 sk_sid, u8 dir) |
833 | { | |
834 | return 0; | |
835 | } | |
836 | #endif /* CONFIG_SECURITY_NETWORK_XFRM */ | |
1da177e4 LT |
837 | static int dummy_register_security (const char *name, struct security_operations *ops) |
838 | { | |
839 | return -EINVAL; | |
840 | } | |
841 | ||
842 | static int dummy_unregister_security (const char *name, struct security_operations *ops) | |
843 | { | |
844 | return -EINVAL; | |
845 | } | |
846 | ||
847 | static void dummy_d_instantiate (struct dentry *dentry, struct inode *inode) | |
848 | { | |
849 | return; | |
850 | } | |
851 | ||
852 | static int dummy_getprocattr(struct task_struct *p, char *name, void *value, size_t size) | |
853 | { | |
854 | return -EINVAL; | |
855 | } | |
856 | ||
857 | static int dummy_setprocattr(struct task_struct *p, char *name, void *value, size_t size) | |
858 | { | |
859 | return -EINVAL; | |
860 | } | |
861 | ||
29db9190 | 862 | #ifdef CONFIG_KEYS |
d720024e | 863 | static inline int dummy_key_alloc(struct key *key, struct task_struct *ctx) |
29db9190 DH |
864 | { |
865 | return 0; | |
866 | } | |
867 | ||
868 | static inline void dummy_key_free(struct key *key) | |
869 | { | |
870 | } | |
871 | ||
872 | static inline int dummy_key_permission(key_ref_t key_ref, | |
873 | struct task_struct *context, | |
874 | key_perm_t perm) | |
875 | { | |
876 | return 0; | |
877 | } | |
878 | #endif /* CONFIG_KEYS */ | |
1da177e4 LT |
879 | |
880 | struct security_operations dummy_security_ops; | |
881 | ||
882 | #define set_to_dummy_if_null(ops, function) \ | |
883 | do { \ | |
884 | if (!ops->function) { \ | |
885 | ops->function = dummy_##function; \ | |
886 | pr_debug("Had to override the " #function \ | |
887 | " security operation with the dummy one.\n");\ | |
888 | } \ | |
889 | } while (0) | |
890 | ||
891 | void security_fixup_ops (struct security_operations *ops) | |
892 | { | |
893 | set_to_dummy_if_null(ops, ptrace); | |
894 | set_to_dummy_if_null(ops, capget); | |
895 | set_to_dummy_if_null(ops, capset_check); | |
896 | set_to_dummy_if_null(ops, capset_set); | |
897 | set_to_dummy_if_null(ops, acct); | |
898 | set_to_dummy_if_null(ops, capable); | |
899 | set_to_dummy_if_null(ops, quotactl); | |
900 | set_to_dummy_if_null(ops, quota_on); | |
901 | set_to_dummy_if_null(ops, sysctl); | |
902 | set_to_dummy_if_null(ops, syslog); | |
903 | set_to_dummy_if_null(ops, settime); | |
904 | set_to_dummy_if_null(ops, vm_enough_memory); | |
905 | set_to_dummy_if_null(ops, bprm_alloc_security); | |
906 | set_to_dummy_if_null(ops, bprm_free_security); | |
907 | set_to_dummy_if_null(ops, bprm_apply_creds); | |
908 | set_to_dummy_if_null(ops, bprm_post_apply_creds); | |
909 | set_to_dummy_if_null(ops, bprm_set_security); | |
910 | set_to_dummy_if_null(ops, bprm_check_security); | |
911 | set_to_dummy_if_null(ops, bprm_secureexec); | |
912 | set_to_dummy_if_null(ops, sb_alloc_security); | |
913 | set_to_dummy_if_null(ops, sb_free_security); | |
914 | set_to_dummy_if_null(ops, sb_copy_data); | |
915 | set_to_dummy_if_null(ops, sb_kern_mount); | |
916 | set_to_dummy_if_null(ops, sb_statfs); | |
917 | set_to_dummy_if_null(ops, sb_mount); | |
918 | set_to_dummy_if_null(ops, sb_check_sb); | |
919 | set_to_dummy_if_null(ops, sb_umount); | |
920 | set_to_dummy_if_null(ops, sb_umount_close); | |
921 | set_to_dummy_if_null(ops, sb_umount_busy); | |
922 | set_to_dummy_if_null(ops, sb_post_remount); | |
923 | set_to_dummy_if_null(ops, sb_post_mountroot); | |
924 | set_to_dummy_if_null(ops, sb_post_addmount); | |
925 | set_to_dummy_if_null(ops, sb_pivotroot); | |
926 | set_to_dummy_if_null(ops, sb_post_pivotroot); | |
927 | set_to_dummy_if_null(ops, inode_alloc_security); | |
928 | set_to_dummy_if_null(ops, inode_free_security); | |
5e41ff9e | 929 | set_to_dummy_if_null(ops, inode_init_security); |
1da177e4 | 930 | set_to_dummy_if_null(ops, inode_create); |
1da177e4 | 931 | set_to_dummy_if_null(ops, inode_link); |
1da177e4 LT |
932 | set_to_dummy_if_null(ops, inode_unlink); |
933 | set_to_dummy_if_null(ops, inode_symlink); | |
1da177e4 | 934 | set_to_dummy_if_null(ops, inode_mkdir); |
1da177e4 LT |
935 | set_to_dummy_if_null(ops, inode_rmdir); |
936 | set_to_dummy_if_null(ops, inode_mknod); | |
1da177e4 | 937 | set_to_dummy_if_null(ops, inode_rename); |
1da177e4 LT |
938 | set_to_dummy_if_null(ops, inode_readlink); |
939 | set_to_dummy_if_null(ops, inode_follow_link); | |
940 | set_to_dummy_if_null(ops, inode_permission); | |
941 | set_to_dummy_if_null(ops, inode_setattr); | |
942 | set_to_dummy_if_null(ops, inode_getattr); | |
943 | set_to_dummy_if_null(ops, inode_delete); | |
944 | set_to_dummy_if_null(ops, inode_setxattr); | |
945 | set_to_dummy_if_null(ops, inode_post_setxattr); | |
946 | set_to_dummy_if_null(ops, inode_getxattr); | |
947 | set_to_dummy_if_null(ops, inode_listxattr); | |
948 | set_to_dummy_if_null(ops, inode_removexattr); | |
7306a0b9 | 949 | set_to_dummy_if_null(ops, inode_xattr_getsuffix); |
1da177e4 LT |
950 | set_to_dummy_if_null(ops, inode_getsecurity); |
951 | set_to_dummy_if_null(ops, inode_setsecurity); | |
952 | set_to_dummy_if_null(ops, inode_listsecurity); | |
953 | set_to_dummy_if_null(ops, file_permission); | |
954 | set_to_dummy_if_null(ops, file_alloc_security); | |
955 | set_to_dummy_if_null(ops, file_free_security); | |
956 | set_to_dummy_if_null(ops, file_ioctl); | |
957 | set_to_dummy_if_null(ops, file_mmap); | |
958 | set_to_dummy_if_null(ops, file_mprotect); | |
959 | set_to_dummy_if_null(ops, file_lock); | |
960 | set_to_dummy_if_null(ops, file_fcntl); | |
961 | set_to_dummy_if_null(ops, file_set_fowner); | |
962 | set_to_dummy_if_null(ops, file_send_sigiotask); | |
963 | set_to_dummy_if_null(ops, file_receive); | |
964 | set_to_dummy_if_null(ops, task_create); | |
965 | set_to_dummy_if_null(ops, task_alloc_security); | |
966 | set_to_dummy_if_null(ops, task_free_security); | |
967 | set_to_dummy_if_null(ops, task_setuid); | |
968 | set_to_dummy_if_null(ops, task_post_setuid); | |
969 | set_to_dummy_if_null(ops, task_setgid); | |
970 | set_to_dummy_if_null(ops, task_setpgid); | |
971 | set_to_dummy_if_null(ops, task_getpgid); | |
972 | set_to_dummy_if_null(ops, task_getsid); | |
973 | set_to_dummy_if_null(ops, task_setgroups); | |
974 | set_to_dummy_if_null(ops, task_setnice); | |
975 | set_to_dummy_if_null(ops, task_setrlimit); | |
976 | set_to_dummy_if_null(ops, task_setscheduler); | |
977 | set_to_dummy_if_null(ops, task_getscheduler); | |
978 | set_to_dummy_if_null(ops, task_wait); | |
979 | set_to_dummy_if_null(ops, task_kill); | |
980 | set_to_dummy_if_null(ops, task_prctl); | |
981 | set_to_dummy_if_null(ops, task_reparent_to_init); | |
982 | set_to_dummy_if_null(ops, task_to_inode); | |
983 | set_to_dummy_if_null(ops, ipc_permission); | |
984 | set_to_dummy_if_null(ops, msg_msg_alloc_security); | |
985 | set_to_dummy_if_null(ops, msg_msg_free_security); | |
986 | set_to_dummy_if_null(ops, msg_queue_alloc_security); | |
987 | set_to_dummy_if_null(ops, msg_queue_free_security); | |
988 | set_to_dummy_if_null(ops, msg_queue_associate); | |
989 | set_to_dummy_if_null(ops, msg_queue_msgctl); | |
990 | set_to_dummy_if_null(ops, msg_queue_msgsnd); | |
991 | set_to_dummy_if_null(ops, msg_queue_msgrcv); | |
992 | set_to_dummy_if_null(ops, shm_alloc_security); | |
993 | set_to_dummy_if_null(ops, shm_free_security); | |
994 | set_to_dummy_if_null(ops, shm_associate); | |
995 | set_to_dummy_if_null(ops, shm_shmctl); | |
996 | set_to_dummy_if_null(ops, shm_shmat); | |
997 | set_to_dummy_if_null(ops, sem_alloc_security); | |
998 | set_to_dummy_if_null(ops, sem_free_security); | |
999 | set_to_dummy_if_null(ops, sem_associate); | |
1000 | set_to_dummy_if_null(ops, sem_semctl); | |
1001 | set_to_dummy_if_null(ops, sem_semop); | |
1002 | set_to_dummy_if_null(ops, netlink_send); | |
1003 | set_to_dummy_if_null(ops, netlink_recv); | |
1004 | set_to_dummy_if_null(ops, register_security); | |
1005 | set_to_dummy_if_null(ops, unregister_security); | |
1006 | set_to_dummy_if_null(ops, d_instantiate); | |
1007 | set_to_dummy_if_null(ops, getprocattr); | |
1008 | set_to_dummy_if_null(ops, setprocattr); | |
1009 | #ifdef CONFIG_SECURITY_NETWORK | |
1010 | set_to_dummy_if_null(ops, unix_stream_connect); | |
1011 | set_to_dummy_if_null(ops, unix_may_send); | |
1012 | set_to_dummy_if_null(ops, socket_create); | |
1013 | set_to_dummy_if_null(ops, socket_post_create); | |
1014 | set_to_dummy_if_null(ops, socket_bind); | |
1015 | set_to_dummy_if_null(ops, socket_connect); | |
1016 | set_to_dummy_if_null(ops, socket_listen); | |
1017 | set_to_dummy_if_null(ops, socket_accept); | |
1018 | set_to_dummy_if_null(ops, socket_post_accept); | |
1019 | set_to_dummy_if_null(ops, socket_sendmsg); | |
1020 | set_to_dummy_if_null(ops, socket_recvmsg); | |
1021 | set_to_dummy_if_null(ops, socket_getsockname); | |
1022 | set_to_dummy_if_null(ops, socket_getpeername); | |
1023 | set_to_dummy_if_null(ops, socket_setsockopt); | |
1024 | set_to_dummy_if_null(ops, socket_getsockopt); | |
1025 | set_to_dummy_if_null(ops, socket_shutdown); | |
1026 | set_to_dummy_if_null(ops, socket_sock_rcv_skb); | |
c841aa03 ACM |
1027 | set_to_dummy_if_null(ops, socket_getpeersec_stream); |
1028 | set_to_dummy_if_null(ops, socket_getpeersec_dgram); | |
1da177e4 LT |
1029 | set_to_dummy_if_null(ops, sk_alloc_security); |
1030 | set_to_dummy_if_null(ops, sk_free_security); | |
df71837d TJ |
1031 | set_to_dummy_if_null(ops, sk_getsid); |
1032 | #endif /* CONFIG_SECURITY_NETWORK */ | |
1033 | #ifdef CONFIG_SECURITY_NETWORK_XFRM | |
1034 | set_to_dummy_if_null(ops, xfrm_policy_alloc_security); | |
1035 | set_to_dummy_if_null(ops, xfrm_policy_clone_security); | |
1036 | set_to_dummy_if_null(ops, xfrm_policy_free_security); | |
c8c05a8e | 1037 | set_to_dummy_if_null(ops, xfrm_policy_delete_security); |
df71837d TJ |
1038 | set_to_dummy_if_null(ops, xfrm_state_alloc_security); |
1039 | set_to_dummy_if_null(ops, xfrm_state_free_security); | |
c8c05a8e | 1040 | set_to_dummy_if_null(ops, xfrm_state_delete_security); |
df71837d TJ |
1041 | set_to_dummy_if_null(ops, xfrm_policy_lookup); |
1042 | #endif /* CONFIG_SECURITY_NETWORK_XFRM */ | |
29db9190 DH |
1043 | #ifdef CONFIG_KEYS |
1044 | set_to_dummy_if_null(ops, key_alloc); | |
1045 | set_to_dummy_if_null(ops, key_free); | |
1046 | set_to_dummy_if_null(ops, key_permission); | |
1047 | #endif /* CONFIG_KEYS */ | |
1048 | ||
1da177e4 LT |
1049 | } |
1050 |