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