diff options
Diffstat (limited to 'security/dummy.c')
-rw-r--r-- | security/dummy.c | 996 |
1 files changed, 996 insertions, 0 deletions
diff --git a/security/dummy.c b/security/dummy.c new file mode 100644 index 000000000000..b32eff146547 --- /dev/null +++ b/security/dummy.c | |||
@@ -0,0 +1,996 @@ | |||
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 | |||