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/kernel.h> |
19 | #include <linux/mman.h> | |
20 | #include <linux/pagemap.h> | |
21 | #include <linux/swap.h> | |
22 | #include <linux/security.h> | |
23 | #include <linux/skbuff.h> | |
24 | #include <linux/netlink.h> | |
25 | #include <net/sock.h> | |
26 | #include <linux/xattr.h> | |
27 | #include <linux/hugetlb.h> | |
28 | #include <linux/ptrace.h> | |
29 | #include <linux/file.h> | |
30 | ||
31 | static int dummy_ptrace (struct task_struct *parent, struct task_struct *child) | |
32 | { | |
33 | return 0; | |
34 | } | |
35 | ||
36 | static int dummy_capget (struct task_struct *target, kernel_cap_t * effective, | |
37 | kernel_cap_t * inheritable, kernel_cap_t * permitted) | |
38 | { | |
72c2d582 | 39 | if (target->euid == 0) { |
e338d263 AM |
40 | cap_set_full(*permitted); |
41 | cap_set_init_eff(*effective); | |
42 | } else { | |
43 | cap_clear(*permitted); | |
44 | cap_clear(*effective); | |
72c2d582 | 45 | } |
e338d263 AM |
46 | |
47 | cap_clear(*inheritable); | |
48 | ||
49 | if (target->fsuid != 0) { | |
50 | *permitted = cap_drop_fs_set(*permitted); | |
51 | *effective = cap_drop_fs_set(*effective); | |
1da177e4 LT |
52 | } |
53 | return 0; | |
54 | } | |
55 | ||
56 | static int dummy_capset_check (struct task_struct *target, | |
57 | kernel_cap_t * effective, | |
58 | kernel_cap_t * inheritable, | |
59 | kernel_cap_t * permitted) | |
60 | { | |
61 | return -EPERM; | |
62 | } | |
63 | ||
64 | static void dummy_capset_set (struct task_struct *target, | |
65 | kernel_cap_t * effective, | |
66 | kernel_cap_t * inheritable, | |
67 | kernel_cap_t * permitted) | |
68 | { | |
69 | return; | |
70 | } | |
71 | ||
72 | static int dummy_acct (struct file *file) | |
73 | { | |
74 | return 0; | |
75 | } | |
76 | ||
77 | static int dummy_capable (struct task_struct *tsk, int cap) | |
78 | { | |
79 | if (cap_raised (tsk->cap_effective, cap)) | |
80 | return 0; | |
81 | return -EPERM; | |
82 | } | |
83 | ||
84 | static int dummy_sysctl (ctl_table * table, int op) | |
85 | { | |
86 | return 0; | |
87 | } | |
88 | ||
89 | static int dummy_quotactl (int cmds, int type, int id, struct super_block *sb) | |
90 | { | |
91 | return 0; | |
92 | } | |
93 | ||
94 | static int dummy_quota_on (struct dentry *dentry) | |
95 | { | |
96 | return 0; | |
97 | } | |
98 | ||
99 | static int dummy_syslog (int type) | |
100 | { | |
101 | if ((type != 3 && type != 10) && current->euid) | |
102 | return -EPERM; | |
103 | return 0; | |
104 | } | |
105 | ||
106 | static int dummy_settime(struct timespec *ts, struct timezone *tz) | |
107 | { | |
108 | if (!capable(CAP_SYS_TIME)) | |
109 | return -EPERM; | |
110 | return 0; | |
111 | } | |
112 | ||
34b4e4aa | 113 | static int dummy_vm_enough_memory(struct mm_struct *mm, long pages) |
1da177e4 LT |
114 | { |
115 | int cap_sys_admin = 0; | |
116 | ||
117 | if (dummy_capable(current, CAP_SYS_ADMIN) == 0) | |
118 | cap_sys_admin = 1; | |
34b4e4aa | 119 | return __vm_enough_memory(mm, pages, cap_sys_admin); |
1da177e4 LT |
120 | } |
121 | ||
122 | static int dummy_bprm_alloc_security (struct linux_binprm *bprm) | |
123 | { | |
124 | return 0; | |
125 | } | |
126 | ||
127 | static void dummy_bprm_free_security (struct linux_binprm *bprm) | |
128 | { | |
129 | return; | |
130 | } | |
131 | ||
132 | static void dummy_bprm_apply_creds (struct linux_binprm *bprm, int unsafe) | |
133 | { | |
134 | if (bprm->e_uid != current->uid || bprm->e_gid != current->gid) { | |
6c5d5238 | 135 | set_dumpable(current->mm, suid_dumpable); |
1da177e4 LT |
136 | |
137 | if ((unsafe & ~LSM_UNSAFE_PTRACE_CAP) && !capable(CAP_SETUID)) { | |
138 | bprm->e_uid = current->uid; | |
139 | bprm->e_gid = current->gid; | |
140 | } | |
141 | } | |
142 | ||
143 | current->suid = current->euid = current->fsuid = bprm->e_uid; | |
144 | current->sgid = current->egid = current->fsgid = bprm->e_gid; | |
145 | ||
146 | dummy_capget(current, ¤t->cap_effective, ¤t->cap_inheritable, ¤t->cap_permitted); | |
147 | } | |
148 | ||
149 | static void dummy_bprm_post_apply_creds (struct linux_binprm *bprm) | |
150 | { | |
151 | return; | |
152 | } | |
153 | ||
154 | static int dummy_bprm_set_security (struct linux_binprm *bprm) | |
155 | { | |
156 | return 0; | |
157 | } | |
158 | ||
159 | static int dummy_bprm_check_security (struct linux_binprm *bprm) | |
160 | { | |
161 | return 0; | |
162 | } | |
163 | ||
164 | static int dummy_bprm_secureexec (struct linux_binprm *bprm) | |
165 | { | |
166 | /* The new userland will simply use the value provided | |
167 | in the AT_SECURE field to decide whether secure mode | |
168 | is required. Hence, this logic is required to preserve | |
169 | the legacy decision algorithm used by the old userland. */ | |
170 | return (current->euid != current->uid || | |
171 | current->egid != current->gid); | |
172 | } | |
173 | ||
174 | static int dummy_sb_alloc_security (struct super_block *sb) | |
175 | { | |
176 | return 0; | |
177 | } | |
178 | ||
179 | static void dummy_sb_free_security (struct super_block *sb) | |
180 | { | |
181 | return; | |
182 | } | |
183 | ||
184 | static int dummy_sb_copy_data (struct file_system_type *type, | |
185 | void *orig, void *copy) | |
186 | { | |
187 | return 0; | |
188 | } | |
189 | ||
190 | static int dummy_sb_kern_mount (struct super_block *sb, void *data) | |
191 | { | |
192 | return 0; | |
193 | } | |
194 | ||
726c3342 | 195 | static int dummy_sb_statfs (struct dentry *dentry) |
1da177e4 LT |
196 | { |
197 | return 0; | |
198 | } | |
199 | ||
200 | static int dummy_sb_mount (char *dev_name, struct nameidata *nd, char *type, | |
201 | unsigned long flags, void *data) | |
202 | { | |
203 | return 0; | |
204 | } | |
205 | ||
206 | static int dummy_sb_check_sb (struct vfsmount *mnt, struct nameidata *nd) | |
207 | { | |
208 | return 0; | |
209 | } | |
210 | ||
211 | static int dummy_sb_umount (struct vfsmount *mnt, int flags) | |
212 | { | |
213 | return 0; | |
214 | } | |
215 | ||
216 | static void dummy_sb_umount_close (struct vfsmount *mnt) | |
217 | { | |
218 | return; | |
219 | } | |
220 | ||
221 | static void dummy_sb_umount_busy (struct vfsmount *mnt) | |
222 | { | |
223 | return; | |
224 | } | |
225 | ||
226 | static void dummy_sb_post_remount (struct vfsmount *mnt, unsigned long flags, | |
227 | void *data) | |
228 | { | |
229 | return; | |
230 | } | |
231 | ||
232 | ||
1da177e4 LT |
233 | static void dummy_sb_post_addmount (struct vfsmount *mnt, struct nameidata *nd) |
234 | { | |
235 | return; | |
236 | } | |
237 | ||
238 | static int dummy_sb_pivotroot (struct nameidata *old_nd, struct nameidata *new_nd) | |
239 | { | |
240 | return 0; | |
241 | } | |
242 | ||
243 | static void dummy_sb_post_pivotroot (struct nameidata *old_nd, struct nameidata *new_nd) | |
244 | { | |
245 | return; | |
246 | } | |
247 | ||
c9180a57 EP |
248 | static int dummy_sb_get_mnt_opts(const struct super_block *sb, char ***mount_options, |
249 | int **flags, int *num_opts) | |
250 | { | |
251 | *mount_options = NULL; | |
252 | *flags = NULL; | |
253 | *num_opts = 0; | |
254 | return 0; | |
255 | } | |
256 | ||
257 | static int dummy_sb_set_mnt_opts(struct super_block *sb, char **mount_options, | |
258 | int *flags, int num_opts) | |
259 | { | |
260 | if (unlikely(num_opts)) | |
261 | return -EOPNOTSUPP; | |
262 | return 0; | |
263 | } | |
264 | ||
265 | static void dummy_sb_clone_mnt_opts(const struct super_block *oldsb, | |
266 | struct super_block *newsb) | |
267 | { | |
268 | return; | |
269 | } | |
270 | ||
1da177e4 LT |
271 | static int dummy_inode_alloc_security (struct inode *inode) |
272 | { | |
273 | return 0; | |
274 | } | |
275 | ||
276 | static void dummy_inode_free_security (struct inode *inode) | |
277 | { | |
278 | return; | |
279 | } | |
280 | ||
5e41ff9e SS |
281 | static int dummy_inode_init_security (struct inode *inode, struct inode *dir, |
282 | char **name, void **value, size_t *len) | |
283 | { | |
284 | return -EOPNOTSUPP; | |
285 | } | |
286 | ||
1da177e4 LT |
287 | static int dummy_inode_create (struct inode *inode, struct dentry *dentry, |
288 | int mask) | |
289 | { | |
290 | return 0; | |
291 | } | |
292 | ||
1da177e4 LT |
293 | static int dummy_inode_link (struct dentry *old_dentry, struct inode *inode, |
294 | struct dentry *new_dentry) | |
295 | { | |
296 | return 0; | |
297 | } | |
298 | ||
1da177e4 LT |
299 | static int dummy_inode_unlink (struct inode *inode, struct dentry *dentry) |
300 | { | |
301 | return 0; | |
302 | } | |
303 | ||
304 | static int dummy_inode_symlink (struct inode *inode, struct dentry *dentry, | |
305 | const char *name) | |
306 | { | |
307 | return 0; | |
308 | } | |
309 | ||
1da177e4 LT |
310 | static int dummy_inode_mkdir (struct inode *inode, struct dentry *dentry, |
311 | int mask) | |
312 | { | |
313 | return 0; | |
314 | } | |
315 | ||
1da177e4 LT |
316 | static int dummy_inode_rmdir (struct inode *inode, struct dentry *dentry) |
317 | { | |
318 | return 0; | |
319 | } | |
320 | ||
321 | static int dummy_inode_mknod (struct inode *inode, struct dentry *dentry, | |
322 | int mode, dev_t dev) | |
323 | { | |
324 | return 0; | |
325 | } | |
326 | ||
1da177e4 LT |
327 | static int dummy_inode_rename (struct inode *old_inode, |
328 | struct dentry *old_dentry, | |
329 | struct inode *new_inode, | |
330 | struct dentry *new_dentry) | |
331 | { | |
332 | return 0; | |
333 | } | |
334 | ||
1da177e4 LT |
335 | static int dummy_inode_readlink (struct dentry *dentry) |
336 | { | |
337 | return 0; | |
338 | } | |
339 | ||
340 | static int dummy_inode_follow_link (struct dentry *dentry, | |
341 | struct nameidata *nameidata) | |
342 | { | |
343 | return 0; | |
344 | } | |
345 | ||
346 | static int dummy_inode_permission (struct inode *inode, int mask, struct nameidata *nd) | |
347 | { | |
348 | return 0; | |
349 | } | |
350 | ||
351 | static int dummy_inode_setattr (struct dentry *dentry, struct iattr *iattr) | |
352 | { | |
353 | return 0; | |
354 | } | |
355 | ||
356 | static int dummy_inode_getattr (struct vfsmount *mnt, struct dentry *dentry) | |
357 | { | |
358 | return 0; | |
359 | } | |
360 | ||
361 | static void dummy_inode_delete (struct inode *ino) | |
362 | { | |
363 | return; | |
364 | } | |
365 | ||
366 | static int dummy_inode_setxattr (struct dentry *dentry, char *name, void *value, | |
367 | size_t size, int flags) | |
368 | { | |
369 | if (!strncmp(name, XATTR_SECURITY_PREFIX, | |
370 | sizeof(XATTR_SECURITY_PREFIX) - 1) && | |
371 | !capable(CAP_SYS_ADMIN)) | |
372 | return -EPERM; | |
373 | return 0; | |
374 | } | |
375 | ||
376 | static void dummy_inode_post_setxattr (struct dentry *dentry, char *name, void *value, | |
377 | size_t size, int flags) | |
378 | { | |
379 | } | |
380 | ||
381 | static int dummy_inode_getxattr (struct dentry *dentry, char *name) | |
382 | { | |
383 | return 0; | |
384 | } | |
385 | ||
386 | static int dummy_inode_listxattr (struct dentry *dentry) | |
387 | { | |
388 | return 0; | |
389 | } | |
390 | ||
391 | static int dummy_inode_removexattr (struct dentry *dentry, char *name) | |
392 | { | |
393 | if (!strncmp(name, XATTR_SECURITY_PREFIX, | |
394 | sizeof(XATTR_SECURITY_PREFIX) - 1) && | |
395 | !capable(CAP_SYS_ADMIN)) | |
396 | return -EPERM; | |
397 | return 0; | |
398 | } | |
399 | ||
b5376771 SH |
400 | static int dummy_inode_need_killpriv(struct dentry *dentry) |
401 | { | |
402 | return 0; | |
403 | } | |
404 | ||
405 | static int dummy_inode_killpriv(struct dentry *dentry) | |
406 | { | |
407 | return 0; | |
408 | } | |
409 | ||
42492594 | 410 | static int dummy_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc) |
1da177e4 LT |
411 | { |
412 | return -EOPNOTSUPP; | |
413 | } | |
414 | ||
415 | static int dummy_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags) | |
416 | { | |
417 | return -EOPNOTSUPP; | |
418 | } | |
419 | ||
420 | static int dummy_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size) | |
421 | { | |
422 | return 0; | |
423 | } | |
424 | ||
425 | static int dummy_file_permission (struct file *file, int mask) | |
426 | { | |
427 | return 0; | |
428 | } | |
429 | ||
430 | static int dummy_file_alloc_security (struct file *file) | |
431 | { | |
432 | return 0; | |
433 | } | |
434 | ||
435 | static void dummy_file_free_security (struct file *file) | |
436 | { | |
437 | return; | |
438 | } | |
439 | ||
440 | static int dummy_file_ioctl (struct file *file, unsigned int command, | |
441 | unsigned long arg) | |
442 | { | |
443 | return 0; | |
444 | } | |
445 | ||
446 | static int dummy_file_mmap (struct file *file, unsigned long reqprot, | |
447 | unsigned long prot, | |
ed032189 EP |
448 | unsigned long flags, |
449 | unsigned long addr, | |
450 | unsigned long addr_only) | |
1da177e4 | 451 | { |
ab5a91a8 | 452 | if ((addr < mmap_min_addr) && !capable(CAP_SYS_RAWIO)) |
ed032189 | 453 | return -EACCES; |
1da177e4 LT |
454 | return 0; |
455 | } | |
456 | ||
457 | static int dummy_file_mprotect (struct vm_area_struct *vma, | |
458 | unsigned long reqprot, | |
459 | unsigned long prot) | |
460 | { | |
461 | return 0; | |
462 | } | |
463 | ||
464 | static int dummy_file_lock (struct file *file, unsigned int cmd) | |
465 | { | |
466 | return 0; | |
467 | } | |
468 | ||
469 | static int dummy_file_fcntl (struct file *file, unsigned int cmd, | |
470 | unsigned long arg) | |
471 | { | |
472 | return 0; | |
473 | } | |
474 | ||
475 | static int dummy_file_set_fowner (struct file *file) | |
476 | { | |
477 | return 0; | |
478 | } | |
479 | ||
480 | static int dummy_file_send_sigiotask (struct task_struct *tsk, | |
481 | struct fown_struct *fown, int sig) | |
482 | { | |
483 | return 0; | |
484 | } | |
485 | ||
486 | static int dummy_file_receive (struct file *file) | |
487 | { | |
488 | return 0; | |
489 | } | |
490 | ||
788e7dd4 YN |
491 | static int dummy_dentry_open (struct file *file) |
492 | { | |
493 | return 0; | |
494 | } | |
495 | ||
1da177e4 LT |
496 | static int dummy_task_create (unsigned long clone_flags) |
497 | { | |
498 | return 0; | |
499 | } | |
500 | ||
501 | static int dummy_task_alloc_security (struct task_struct *p) | |
502 | { | |
503 | return 0; | |
504 | } | |
505 | ||
506 | static void dummy_task_free_security (struct task_struct *p) | |
507 | { | |
508 | return; | |
509 | } | |
510 | ||
511 | static int dummy_task_setuid (uid_t id0, uid_t id1, uid_t id2, int flags) | |
512 | { | |
513 | return 0; | |
514 | } | |
515 | ||
516 | static int dummy_task_post_setuid (uid_t id0, uid_t id1, uid_t id2, int flags) | |
517 | { | |
518 | dummy_capget(current, ¤t->cap_effective, ¤t->cap_inheritable, ¤t->cap_permitted); | |
519 | return 0; | |
520 | } | |
521 | ||
522 | static int dummy_task_setgid (gid_t id0, gid_t id1, gid_t id2, int flags) | |
523 | { | |
524 | return 0; | |
525 | } | |
526 | ||
527 | static int dummy_task_setpgid (struct task_struct *p, pid_t pgid) | |
528 | { | |
529 | return 0; | |
530 | } | |
531 | ||
532 | static int dummy_task_getpgid (struct task_struct *p) | |
533 | { | |
534 | return 0; | |
535 | } | |
536 | ||
537 | static int dummy_task_getsid (struct task_struct *p) | |
538 | { | |
539 | return 0; | |
540 | } | |
541 | ||
f9008e4c DQ |
542 | static void dummy_task_getsecid (struct task_struct *p, u32 *secid) |
543 | { } | |
544 | ||
1da177e4 LT |
545 | static int dummy_task_setgroups (struct group_info *group_info) |
546 | { | |
547 | return 0; | |
548 | } | |
549 | ||
550 | static int dummy_task_setnice (struct task_struct *p, int nice) | |
551 | { | |
552 | return 0; | |
553 | } | |
554 | ||
03e68060 JM |
555 | static int dummy_task_setioprio (struct task_struct *p, int ioprio) |
556 | { | |
557 | return 0; | |
558 | } | |
559 | ||
a1836a42 DQ |
560 | static int dummy_task_getioprio (struct task_struct *p) |
561 | { | |
562 | return 0; | |
563 | } | |
564 | ||
1da177e4 LT |
565 | static int dummy_task_setrlimit (unsigned int resource, struct rlimit *new_rlim) |
566 | { | |
567 | return 0; | |
568 | } | |
569 | ||
570 | static int dummy_task_setscheduler (struct task_struct *p, int policy, | |
571 | struct sched_param *lp) | |
572 | { | |
573 | return 0; | |
574 | } | |
575 | ||
576 | static int dummy_task_getscheduler (struct task_struct *p) | |
577 | { | |
578 | return 0; | |
579 | } | |
580 | ||
35601547 DQ |
581 | static int dummy_task_movememory (struct task_struct *p) |
582 | { | |
583 | return 0; | |
584 | } | |
585 | ||
1da177e4 LT |
586 | static int dummy_task_wait (struct task_struct *p) |
587 | { | |
588 | return 0; | |
589 | } | |
590 | ||
591 | static int dummy_task_kill (struct task_struct *p, struct siginfo *info, | |
f9008e4c | 592 | int sig, u32 secid) |
1da177e4 LT |
593 | { |
594 | return 0; | |
595 | } | |
596 | ||
597 | static int dummy_task_prctl (int option, unsigned long arg2, unsigned long arg3, | |
598 | unsigned long arg4, unsigned long arg5) | |
599 | { | |
600 | return 0; | |
601 | } | |
602 | ||
603 | static void dummy_task_reparent_to_init (struct task_struct *p) | |
604 | { | |
605 | p->euid = p->fsuid = 0; | |
606 | return; | |
607 | } | |
608 | ||
609 | static void dummy_task_to_inode(struct task_struct *p, struct inode *inode) | |
610 | { } | |
611 | ||
612 | static int dummy_ipc_permission (struct kern_ipc_perm *ipcp, short flag) | |
613 | { | |
614 | return 0; | |
615 | } | |
616 | ||
617 | static int dummy_msg_msg_alloc_security (struct msg_msg *msg) | |
618 | { | |
619 | return 0; | |
620 | } | |
621 | ||
622 | static void dummy_msg_msg_free_security (struct msg_msg *msg) | |
623 | { | |
624 | return; | |
625 | } | |
626 | ||
627 | static int dummy_msg_queue_alloc_security (struct msg_queue *msq) | |
628 | { | |
629 | return 0; | |
630 | } | |
631 | ||
632 | static void dummy_msg_queue_free_security (struct msg_queue *msq) | |
633 | { | |
634 | return; | |
635 | } | |
636 | ||
637 | static int dummy_msg_queue_associate (struct msg_queue *msq, | |
638 | int msqflg) | |
639 | { | |
640 | return 0; | |
641 | } | |
642 | ||
643 | static int dummy_msg_queue_msgctl (struct msg_queue *msq, int cmd) | |
644 | { | |
645 | return 0; | |
646 | } | |
647 | ||
648 | static int dummy_msg_queue_msgsnd (struct msg_queue *msq, struct msg_msg *msg, | |
649 | int msgflg) | |
650 | { | |
651 | return 0; | |
652 | } | |
653 | ||
654 | static int dummy_msg_queue_msgrcv (struct msg_queue *msq, struct msg_msg *msg, | |
655 | struct task_struct *target, long type, | |
656 | int mode) | |
657 | { | |
658 | return 0; | |
659 | } | |
660 | ||
661 | static int dummy_shm_alloc_security (struct shmid_kernel *shp) | |
662 | { | |
663 | return 0; | |
664 | } | |
665 | ||
666 | static void dummy_shm_free_security (struct shmid_kernel *shp) | |
667 | { | |
668 | return; | |
669 | } | |
670 | ||
671 | static int dummy_shm_associate (struct shmid_kernel *shp, int shmflg) | |
672 | { | |
673 | return 0; | |
674 | } | |
675 | ||
676 | static int dummy_shm_shmctl (struct shmid_kernel *shp, int cmd) | |
677 | { | |
678 | return 0; | |
679 | } | |
680 | ||
681 | static int dummy_shm_shmat (struct shmid_kernel *shp, char __user *shmaddr, | |
682 | int shmflg) | |
683 | { | |
684 | return 0; | |
685 | } | |
686 | ||
687 | static int dummy_sem_alloc_security (struct sem_array *sma) | |
688 | { | |
689 | return 0; | |
690 | } | |
691 | ||
692 | static void dummy_sem_free_security (struct sem_array *sma) | |
693 | { | |
694 | return; | |
695 | } | |
696 | ||
697 | static int dummy_sem_associate (struct sem_array *sma, int semflg) | |
698 | { | |
699 | return 0; | |
700 | } | |
701 | ||
702 | static int dummy_sem_semctl (struct sem_array *sma, int cmd) | |
703 | { | |
704 | return 0; | |
705 | } | |
706 | ||
707 | static int dummy_sem_semop (struct sem_array *sma, | |
708 | struct sembuf *sops, unsigned nsops, int alter) | |
709 | { | |
710 | return 0; | |
711 | } | |
712 | ||
713 | static int dummy_netlink_send (struct sock *sk, struct sk_buff *skb) | |
714 | { | |
715 | NETLINK_CB(skb).eff_cap = current->cap_effective; | |
716 | return 0; | |
717 | } | |
718 | ||
c7bdb545 | 719 | static int dummy_netlink_recv (struct sk_buff *skb, int cap) |
1da177e4 | 720 | { |
c7bdb545 | 721 | if (!cap_raised (NETLINK_CB (skb).eff_cap, cap)) |
1da177e4 LT |
722 | return -EPERM; |
723 | return 0; | |
724 | } | |
725 | ||
726 | #ifdef CONFIG_SECURITY_NETWORK | |
727 | static int dummy_unix_stream_connect (struct socket *sock, | |
728 | struct socket *other, | |
729 | struct sock *newsk) | |
730 | { | |
731 | return 0; | |
732 | } | |
733 | ||
734 | static int dummy_unix_may_send (struct socket *sock, | |
735 | struct socket *other) | |
736 | { | |
737 | return 0; | |
738 | } | |
739 | ||
740 | static int dummy_socket_create (int family, int type, | |
741 | int protocol, int kern) | |
742 | { | |
743 | return 0; | |
744 | } | |
745 | ||
7420ed23 VY |
746 | static int dummy_socket_post_create (struct socket *sock, int family, int type, |
747 | int protocol, int kern) | |
1da177e4 | 748 | { |
7420ed23 | 749 | return 0; |
1da177e4 LT |
750 | } |
751 | ||
752 | static int dummy_socket_bind (struct socket *sock, struct sockaddr *address, | |
753 | int addrlen) | |
754 | { | |
755 | return 0; | |
756 | } | |
757 | ||
758 | static int dummy_socket_connect (struct socket *sock, struct sockaddr *address, | |
759 | int addrlen) | |
760 | { | |
761 | return 0; | |
762 | } | |
763 | ||
764 | static int dummy_socket_listen (struct socket *sock, int backlog) | |
765 | { | |
766 | return 0; | |
767 | } | |
768 | ||
769 | static int dummy_socket_accept (struct socket *sock, struct socket *newsock) | |
770 | { | |
771 | return 0; | |
772 | } | |
773 | ||
774 | static void dummy_socket_post_accept (struct socket *sock, | |
775 | struct socket *newsock) | |
776 | { | |
777 | return; | |
778 | } | |
779 | ||
780 | static int dummy_socket_sendmsg (struct socket *sock, struct msghdr *msg, | |
781 | int size) | |
782 | { | |
783 | return 0; | |
784 | } | |
785 | ||
786 | static int dummy_socket_recvmsg (struct socket *sock, struct msghdr *msg, | |
787 | int size, int flags) | |
788 | { | |
789 | return 0; | |
790 | } | |
791 | ||
792 | static int dummy_socket_getsockname (struct socket *sock) | |
793 | { | |
794 | return 0; | |
795 | } | |
796 | ||
797 | static int dummy_socket_getpeername (struct socket *sock) | |
798 | { | |
799 | return 0; | |
800 | } | |
801 | ||
802 | static int dummy_socket_setsockopt (struct socket *sock, int level, int optname) | |
803 | { | |
804 | return 0; | |
805 | } | |
806 | ||
807 | static int dummy_socket_getsockopt (struct socket *sock, int level, int optname) | |
808 | { | |
809 | return 0; | |
810 | } | |
811 | ||
812 | static int dummy_socket_shutdown (struct socket *sock, int how) | |
813 | { | |
814 | return 0; | |
815 | } | |
816 | ||
817 | static int dummy_socket_sock_rcv_skb (struct sock *sk, struct sk_buff *skb) | |
818 | { | |
819 | return 0; | |
820 | } | |
821 | ||
2c7946a7 CZ |
822 | static int dummy_socket_getpeersec_stream(struct socket *sock, char __user *optval, |
823 | int __user *optlen, unsigned len) | |
824 | { | |
825 | return -ENOPROTOOPT; | |
826 | } | |
827 | ||
dc49c1f9 | 828 | static int dummy_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid) |
1da177e4 LT |
829 | { |
830 | return -ENOPROTOOPT; | |
831 | } | |
832 | ||
7d877f3b | 833 | static inline int dummy_sk_alloc_security (struct sock *sk, int family, gfp_t priority) |
1da177e4 LT |
834 | { |
835 | return 0; | |
836 | } | |
837 | ||
838 | static inline void dummy_sk_free_security (struct sock *sk) | |
839 | { | |
840 | } | |
df71837d | 841 | |
892c141e VY |
842 | static inline void dummy_sk_clone_security (const struct sock *sk, struct sock *newsk) |
843 | { | |
844 | } | |
845 | ||
beb8d13b | 846 | static inline void dummy_sk_getsecid(struct sock *sk, u32 *secid) |
df71837d | 847 | { |
df71837d | 848 | } |
4237c75c VY |
849 | |
850 | static inline void dummy_sock_graft(struct sock* sk, struct socket *parent) | |
851 | { | |
852 | } | |
853 | ||
854 | static inline int dummy_inet_conn_request(struct sock *sk, | |
855 | struct sk_buff *skb, struct request_sock *req) | |
856 | { | |
857 | return 0; | |
858 | } | |
859 | ||
860 | static inline void dummy_inet_csk_clone(struct sock *newsk, | |
861 | const struct request_sock *req) | |
862 | { | |
863 | } | |
864 | ||
6b877699 VY |
865 | static inline void dummy_inet_conn_established(struct sock *sk, |
866 | struct sk_buff *skb) | |
867 | { | |
868 | } | |
869 | ||
4237c75c VY |
870 | static inline void dummy_req_classify_flow(const struct request_sock *req, |
871 | struct flowi *fl) | |
872 | { | |
873 | } | |
1da177e4 LT |
874 | #endif /* CONFIG_SECURITY_NETWORK */ |
875 | ||
df71837d | 876 | #ifdef CONFIG_SECURITY_NETWORK_XFRM |
cb969f07 | 877 | static int dummy_xfrm_policy_alloc_security(struct xfrm_policy *xp, |
c1a856c9 | 878 | struct xfrm_user_sec_ctx *sec_ctx) |
df71837d TJ |
879 | { |
880 | return 0; | |
881 | } | |
882 | ||
883 | static inline int dummy_xfrm_policy_clone_security(struct xfrm_policy *old, struct xfrm_policy *new) | |
884 | { | |
885 | return 0; | |
886 | } | |
887 | ||
888 | static void dummy_xfrm_policy_free_security(struct xfrm_policy *xp) | |
889 | { | |
890 | } | |
891 | ||
c8c05a8e CZ |
892 | static int dummy_xfrm_policy_delete_security(struct xfrm_policy *xp) |
893 | { | |
894 | return 0; | |
895 | } | |
896 | ||
e0d1caa7 | 897 | static int dummy_xfrm_state_alloc_security(struct xfrm_state *x, |
c1a856c9 | 898 | struct xfrm_user_sec_ctx *sec_ctx, u32 secid) |
df71837d TJ |
899 | { |
900 | return 0; | |
901 | } | |
902 | ||
903 | static void dummy_xfrm_state_free_security(struct xfrm_state *x) | |
904 | { | |
905 | } | |
906 | ||
c8c05a8e CZ |
907 | static int dummy_xfrm_state_delete_security(struct xfrm_state *x) |
908 | { | |
909 | return 0; | |
910 | } | |
911 | ||
df71837d TJ |
912 | static int dummy_xfrm_policy_lookup(struct xfrm_policy *xp, u32 sk_sid, u8 dir) |
913 | { | |
914 | return 0; | |
915 | } | |
e0d1caa7 VY |
916 | |
917 | static int dummy_xfrm_state_pol_flow_match(struct xfrm_state *x, | |
918 | struct xfrm_policy *xp, struct flowi *fl) | |
919 | { | |
920 | return 1; | |
921 | } | |
922 | ||
beb8d13b | 923 | static int dummy_xfrm_decode_session(struct sk_buff *skb, u32 *fl, int ckall) |
e0d1caa7 VY |
924 | { |
925 | return 0; | |
926 | } | |
927 | ||
df71837d | 928 | #endif /* CONFIG_SECURITY_NETWORK_XFRM */ |
1da177e4 LT |
929 | static int dummy_register_security (const char *name, struct security_operations *ops) |
930 | { | |
931 | return -EINVAL; | |
932 | } | |
933 | ||
1da177e4 LT |
934 | static void dummy_d_instantiate (struct dentry *dentry, struct inode *inode) |
935 | { | |
936 | return; | |
937 | } | |
938 | ||
04ff9708 | 939 | static int dummy_getprocattr(struct task_struct *p, char *name, char **value) |
1da177e4 LT |
940 | { |
941 | return -EINVAL; | |
942 | } | |
943 | ||
944 | static int dummy_setprocattr(struct task_struct *p, char *name, void *value, size_t size) | |
945 | { | |
946 | return -EINVAL; | |
947 | } | |
948 | ||
dc49c1f9 CZ |
949 | static int dummy_secid_to_secctx(u32 secid, char **secdata, u32 *seclen) |
950 | { | |
951 | return -EOPNOTSUPP; | |
952 | } | |
953 | ||
63cb3449 DH |
954 | static int dummy_secctx_to_secid(char *secdata, u32 seclen, u32 *secid) |
955 | { | |
956 | return -EOPNOTSUPP; | |
957 | } | |
958 | ||
dc49c1f9 CZ |
959 | static void dummy_release_secctx(char *secdata, u32 seclen) |
960 | { | |
961 | } | |
962 | ||
29db9190 | 963 | #ifdef CONFIG_KEYS |
7e047ef5 DH |
964 | static inline int dummy_key_alloc(struct key *key, struct task_struct *ctx, |
965 | unsigned long flags) | |
29db9190 DH |
966 | { |
967 | return 0; | |
968 | } | |
969 | ||
970 | static inline void dummy_key_free(struct key *key) | |
971 | { | |
972 | } | |
973 | ||
974 | static inline int dummy_key_permission(key_ref_t key_ref, | |
975 | struct task_struct *context, | |
976 | key_perm_t perm) | |
977 | { | |
978 | return 0; | |
979 | } | |
980 | #endif /* CONFIG_KEYS */ | |
1da177e4 LT |
981 | |
982 | struct security_operations dummy_security_ops; | |
983 | ||
984 | #define set_to_dummy_if_null(ops, function) \ | |
985 | do { \ | |
986 | if (!ops->function) { \ | |
987 | ops->function = dummy_##function; \ | |
988 | pr_debug("Had to override the " #function \ | |
989 | " security operation with the dummy one.\n");\ | |
990 | } \ | |
991 | } while (0) | |
992 | ||
993 | void security_fixup_ops (struct security_operations *ops) | |
994 | { | |
995 | set_to_dummy_if_null(ops, ptrace); | |
996 | set_to_dummy_if_null(ops, capget); | |
997 | set_to_dummy_if_null(ops, capset_check); | |
998 | set_to_dummy_if_null(ops, capset_set); | |
999 | set_to_dummy_if_null(ops, acct); | |
1000 | set_to_dummy_if_null(ops, capable); | |
1001 | set_to_dummy_if_null(ops, quotactl); | |
1002 | set_to_dummy_if_null(ops, quota_on); | |
1003 | set_to_dummy_if_null(ops, sysctl); | |
1004 | set_to_dummy_if_null(ops, syslog); | |
1005 | set_to_dummy_if_null(ops, settime); | |
1006 | set_to_dummy_if_null(ops, vm_enough_memory); | |
1007 | set_to_dummy_if_null(ops, bprm_alloc_security); | |
1008 | set_to_dummy_if_null(ops, bprm_free_security); | |
1009 | set_to_dummy_if_null(ops, bprm_apply_creds); | |
1010 | set_to_dummy_if_null(ops, bprm_post_apply_creds); | |
1011 | set_to_dummy_if_null(ops, bprm_set_security); | |
1012 | set_to_dummy_if_null(ops, bprm_check_security); | |
1013 | set_to_dummy_if_null(ops, bprm_secureexec); | |
1014 | set_to_dummy_if_null(ops, sb_alloc_security); | |
1015 | set_to_dummy_if_null(ops, sb_free_security); | |
1016 | set_to_dummy_if_null(ops, sb_copy_data); | |
1017 | set_to_dummy_if_null(ops, sb_kern_mount); | |
1018 | set_to_dummy_if_null(ops, sb_statfs); | |
1019 | set_to_dummy_if_null(ops, sb_mount); | |
1020 | set_to_dummy_if_null(ops, sb_check_sb); | |
1021 | set_to_dummy_if_null(ops, sb_umount); | |
1022 | set_to_dummy_if_null(ops, sb_umount_close); | |
1023 | set_to_dummy_if_null(ops, sb_umount_busy); | |
1024 | set_to_dummy_if_null(ops, sb_post_remount); | |
1da177e4 LT |
1025 | set_to_dummy_if_null(ops, sb_post_addmount); |
1026 | set_to_dummy_if_null(ops, sb_pivotroot); | |
1027 | set_to_dummy_if_null(ops, sb_post_pivotroot); | |
c9180a57 EP |
1028 | set_to_dummy_if_null(ops, sb_get_mnt_opts); |
1029 | set_to_dummy_if_null(ops, sb_set_mnt_opts); | |
1030 | set_to_dummy_if_null(ops, sb_clone_mnt_opts); | |
1da177e4 LT |
1031 | set_to_dummy_if_null(ops, inode_alloc_security); |
1032 | set_to_dummy_if_null(ops, inode_free_security); | |
5e41ff9e | 1033 | set_to_dummy_if_null(ops, inode_init_security); |
1da177e4 | 1034 | set_to_dummy_if_null(ops, inode_create); |
1da177e4 | 1035 | set_to_dummy_if_null(ops, inode_link); |
1da177e4 LT |
1036 | set_to_dummy_if_null(ops, inode_unlink); |
1037 | set_to_dummy_if_null(ops, inode_symlink); | |
1da177e4 | 1038 | set_to_dummy_if_null(ops, inode_mkdir); |
1da177e4 LT |
1039 | set_to_dummy_if_null(ops, inode_rmdir); |
1040 | set_to_dummy_if_null(ops, inode_mknod); | |
1da177e4 | 1041 | set_to_dummy_if_null(ops, inode_rename); |
1da177e4 LT |
1042 | set_to_dummy_if_null(ops, inode_readlink); |
1043 | set_to_dummy_if_null(ops, inode_follow_link); | |
1044 | set_to_dummy_if_null(ops, inode_permission); | |
1045 | set_to_dummy_if_null(ops, inode_setattr); | |
1046 | set_to_dummy_if_null(ops, inode_getattr); | |
1047 | set_to_dummy_if_null(ops, inode_delete); | |
1048 | set_to_dummy_if_null(ops, inode_setxattr); | |
1049 | set_to_dummy_if_null(ops, inode_post_setxattr); | |
1050 | set_to_dummy_if_null(ops, inode_getxattr); | |
1051 | set_to_dummy_if_null(ops, inode_listxattr); | |
1052 | set_to_dummy_if_null(ops, inode_removexattr); | |
b5376771 SH |
1053 | set_to_dummy_if_null(ops, inode_need_killpriv); |
1054 | set_to_dummy_if_null(ops, inode_killpriv); | |
1da177e4 LT |
1055 | set_to_dummy_if_null(ops, inode_getsecurity); |
1056 | set_to_dummy_if_null(ops, inode_setsecurity); | |
1057 | set_to_dummy_if_null(ops, inode_listsecurity); | |
1058 | set_to_dummy_if_null(ops, file_permission); | |
1059 | set_to_dummy_if_null(ops, file_alloc_security); | |
1060 | set_to_dummy_if_null(ops, file_free_security); | |
1061 | set_to_dummy_if_null(ops, file_ioctl); | |
1062 | set_to_dummy_if_null(ops, file_mmap); | |
1063 | set_to_dummy_if_null(ops, file_mprotect); | |
1064 | set_to_dummy_if_null(ops, file_lock); | |
1065 | set_to_dummy_if_null(ops, file_fcntl); | |
1066 | set_to_dummy_if_null(ops, file_set_fowner); | |
1067 | set_to_dummy_if_null(ops, file_send_sigiotask); | |
1068 | set_to_dummy_if_null(ops, file_receive); | |
788e7dd4 | 1069 | set_to_dummy_if_null(ops, dentry_open); |
1da177e4 LT |
1070 | set_to_dummy_if_null(ops, task_create); |
1071 | set_to_dummy_if_null(ops, task_alloc_security); | |
1072 | set_to_dummy_if_null(ops, task_free_security); | |
1073 | set_to_dummy_if_null(ops, task_setuid); | |
1074 | set_to_dummy_if_null(ops, task_post_setuid); | |
1075 | set_to_dummy_if_null(ops, task_setgid); | |
1076 | set_to_dummy_if_null(ops, task_setpgid); | |
1077 | set_to_dummy_if_null(ops, task_getpgid); | |
1078 | set_to_dummy_if_null(ops, task_getsid); | |
f9008e4c | 1079 | set_to_dummy_if_null(ops, task_getsecid); |
1da177e4 LT |
1080 | set_to_dummy_if_null(ops, task_setgroups); |
1081 | set_to_dummy_if_null(ops, task_setnice); | |
03e68060 | 1082 | set_to_dummy_if_null(ops, task_setioprio); |
a1836a42 | 1083 | set_to_dummy_if_null(ops, task_getioprio); |
1da177e4 LT |
1084 | set_to_dummy_if_null(ops, task_setrlimit); |
1085 | set_to_dummy_if_null(ops, task_setscheduler); | |
1086 | set_to_dummy_if_null(ops, task_getscheduler); | |
35601547 | 1087 | set_to_dummy_if_null(ops, task_movememory); |
1da177e4 LT |
1088 | set_to_dummy_if_null(ops, task_wait); |
1089 | set_to_dummy_if_null(ops, task_kill); | |
1090 | set_to_dummy_if_null(ops, task_prctl); | |
1091 | set_to_dummy_if_null(ops, task_reparent_to_init); | |
1092 | set_to_dummy_if_null(ops, task_to_inode); | |
1093 | set_to_dummy_if_null(ops, ipc_permission); | |
1094 | set_to_dummy_if_null(ops, msg_msg_alloc_security); | |
1095 | set_to_dummy_if_null(ops, msg_msg_free_security); | |
1096 | set_to_dummy_if_null(ops, msg_queue_alloc_security); | |
1097 | set_to_dummy_if_null(ops, msg_queue_free_security); | |
1098 | set_to_dummy_if_null(ops, msg_queue_associate); | |
1099 | set_to_dummy_if_null(ops, msg_queue_msgctl); | |
1100 | set_to_dummy_if_null(ops, msg_queue_msgsnd); | |
1101 | set_to_dummy_if_null(ops, msg_queue_msgrcv); | |
1102 | set_to_dummy_if_null(ops, shm_alloc_security); | |
1103 | set_to_dummy_if_null(ops, shm_free_security); | |
1104 | set_to_dummy_if_null(ops, shm_associate); | |
1105 | set_to_dummy_if_null(ops, shm_shmctl); | |
1106 | set_to_dummy_if_null(ops, shm_shmat); | |
1107 | set_to_dummy_if_null(ops, sem_alloc_security); | |
1108 | set_to_dummy_if_null(ops, sem_free_security); | |
1109 | set_to_dummy_if_null(ops, sem_associate); | |
1110 | set_to_dummy_if_null(ops, sem_semctl); | |
1111 | set_to_dummy_if_null(ops, sem_semop); | |
1112 | set_to_dummy_if_null(ops, netlink_send); | |
1113 | set_to_dummy_if_null(ops, netlink_recv); | |
1114 | set_to_dummy_if_null(ops, register_security); | |
1da177e4 LT |
1115 | set_to_dummy_if_null(ops, d_instantiate); |
1116 | set_to_dummy_if_null(ops, getprocattr); | |
1117 | set_to_dummy_if_null(ops, setprocattr); | |
dc49c1f9 | 1118 | set_to_dummy_if_null(ops, secid_to_secctx); |
63cb3449 | 1119 | set_to_dummy_if_null(ops, secctx_to_secid); |
dc49c1f9 | 1120 | set_to_dummy_if_null(ops, release_secctx); |
1da177e4 LT |
1121 | #ifdef CONFIG_SECURITY_NETWORK |
1122 | set_to_dummy_if_null(ops, unix_stream_connect); | |
1123 | set_to_dummy_if_null(ops, unix_may_send); | |
1124 | set_to_dummy_if_null(ops, socket_create); | |
1125 | set_to_dummy_if_null(ops, socket_post_create); | |
1126 | set_to_dummy_if_null(ops, socket_bind); | |
1127 | set_to_dummy_if_null(ops, socket_connect); | |
1128 | set_to_dummy_if_null(ops, socket_listen); | |
1129 | set_to_dummy_if_null(ops, socket_accept); | |
1130 | set_to_dummy_if_null(ops, socket_post_accept); | |
1131 | set_to_dummy_if_null(ops, socket_sendmsg); | |
1132 | set_to_dummy_if_null(ops, socket_recvmsg); | |
1133 | set_to_dummy_if_null(ops, socket_getsockname); | |
1134 | set_to_dummy_if_null(ops, socket_getpeername); | |
1135 | set_to_dummy_if_null(ops, socket_setsockopt); | |
1136 | set_to_dummy_if_null(ops, socket_getsockopt); | |
1137 | set_to_dummy_if_null(ops, socket_shutdown); | |
1138 | set_to_dummy_if_null(ops, socket_sock_rcv_skb); | |
c841aa03 ACM |
1139 | set_to_dummy_if_null(ops, socket_getpeersec_stream); |
1140 | set_to_dummy_if_null(ops, socket_getpeersec_dgram); | |
1da177e4 LT |
1141 | set_to_dummy_if_null(ops, sk_alloc_security); |
1142 | set_to_dummy_if_null(ops, sk_free_security); | |
892c141e | 1143 | set_to_dummy_if_null(ops, sk_clone_security); |
beb8d13b | 1144 | set_to_dummy_if_null(ops, sk_getsecid); |
4237c75c VY |
1145 | set_to_dummy_if_null(ops, sock_graft); |
1146 | set_to_dummy_if_null(ops, inet_conn_request); | |
1147 | set_to_dummy_if_null(ops, inet_csk_clone); | |
6b877699 | 1148 | set_to_dummy_if_null(ops, inet_conn_established); |
4237c75c | 1149 | set_to_dummy_if_null(ops, req_classify_flow); |
df71837d TJ |
1150 | #endif /* CONFIG_SECURITY_NETWORK */ |
1151 | #ifdef CONFIG_SECURITY_NETWORK_XFRM | |
1152 | set_to_dummy_if_null(ops, xfrm_policy_alloc_security); | |
1153 | set_to_dummy_if_null(ops, xfrm_policy_clone_security); | |
1154 | set_to_dummy_if_null(ops, xfrm_policy_free_security); | |
c8c05a8e | 1155 | set_to_dummy_if_null(ops, xfrm_policy_delete_security); |
df71837d TJ |
1156 | set_to_dummy_if_null(ops, xfrm_state_alloc_security); |
1157 | set_to_dummy_if_null(ops, xfrm_state_free_security); | |
c8c05a8e | 1158 | set_to_dummy_if_null(ops, xfrm_state_delete_security); |
df71837d | 1159 | set_to_dummy_if_null(ops, xfrm_policy_lookup); |
e0d1caa7 | 1160 | set_to_dummy_if_null(ops, xfrm_state_pol_flow_match); |
e0d1caa7 | 1161 | set_to_dummy_if_null(ops, xfrm_decode_session); |
df71837d | 1162 | #endif /* CONFIG_SECURITY_NETWORK_XFRM */ |
29db9190 DH |
1163 | #ifdef CONFIG_KEYS |
1164 | set_to_dummy_if_null(ops, key_alloc); | |
1165 | set_to_dummy_if_null(ops, key_free); | |
1166 | set_to_dummy_if_null(ops, key_permission); | |
1167 | #endif /* CONFIG_KEYS */ | |
1168 | ||
1da177e4 LT |
1169 | } |
1170 |