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 | { | |
39 | *effective = *inheritable = *permitted = 0; | |
40 | if (!issecure(SECURE_NOROOT)) { | |
41 | if (target->euid == 0) { | |
42 | *permitted |= (~0 & ~CAP_FS_MASK); | |
43 | *effective |= (~0 & ~CAP_TO_MASK(CAP_SETPCAP) & ~CAP_FS_MASK); | |
44 | } | |
45 | if (target->fsuid == 0) { | |
46 | *permitted |= CAP_FS_MASK; | |
47 | *effective |= CAP_FS_MASK; | |
48 | } | |
49 | } | |
50 | return 0; | |
51 | } | |
52 | ||
53 | static int dummy_capset_check (struct task_struct *target, | |
54 | kernel_cap_t * effective, | |
55 | kernel_cap_t * inheritable, | |
56 | kernel_cap_t * permitted) | |
57 | { | |
58 | return -EPERM; | |
59 | } | |
60 | ||
61 | static void dummy_capset_set (struct task_struct *target, | |
62 | kernel_cap_t * effective, | |
63 | kernel_cap_t * inheritable, | |
64 | kernel_cap_t * permitted) | |
65 | { | |
66 | return; | |
67 | } | |
68 | ||
69 | static int dummy_acct (struct file *file) | |
70 | { | |
71 | return 0; | |
72 | } | |
73 | ||
74 | static int dummy_capable (struct task_struct *tsk, int cap) | |
75 | { | |
76 | if (cap_raised (tsk->cap_effective, cap)) | |
77 | return 0; | |
78 | return -EPERM; | |
79 | } | |
80 | ||
81 | static int dummy_sysctl (ctl_table * table, int op) | |
82 | { | |
83 | return 0; | |
84 | } | |
85 | ||
86 | static int dummy_quotactl (int cmds, int type, int id, struct super_block *sb) | |
87 | { | |
88 | return 0; | |
89 | } | |
90 | ||
91 | static int dummy_quota_on (struct dentry *dentry) | |
92 | { | |
93 | return 0; | |
94 | } | |
95 | ||
96 | static int dummy_syslog (int type) | |
97 | { | |
98 | if ((type != 3 && type != 10) && current->euid) | |
99 | return -EPERM; | |
100 | return 0; | |
101 | } | |
102 | ||
103 | static int dummy_settime(struct timespec *ts, struct timezone *tz) | |
104 | { | |
105 | if (!capable(CAP_SYS_TIME)) | |
106 | return -EPERM; | |
107 | return 0; | |
108 | } | |
109 | ||
34b4e4aa | 110 | static int dummy_vm_enough_memory(struct mm_struct *mm, long pages) |
1da177e4 LT |
111 | { |
112 | int cap_sys_admin = 0; | |
113 | ||
114 | if (dummy_capable(current, CAP_SYS_ADMIN) == 0) | |
115 | cap_sys_admin = 1; | |
34b4e4aa | 116 | return __vm_enough_memory(mm, pages, cap_sys_admin); |
1da177e4 LT |
117 | } |
118 | ||
119 | static int dummy_bprm_alloc_security (struct linux_binprm *bprm) | |
120 | { | |
121 | return 0; | |
122 | } | |
123 | ||
124 | static void dummy_bprm_free_security (struct linux_binprm *bprm) | |
125 | { | |
126 | return; | |
127 | } | |
128 | ||
129 | static void dummy_bprm_apply_creds (struct linux_binprm *bprm, int unsafe) | |
130 | { | |
131 | if (bprm->e_uid != current->uid || bprm->e_gid != current->gid) { | |
6c5d5238 | 132 | set_dumpable(current->mm, suid_dumpable); |
1da177e4 LT |
133 | |
134 | if ((unsafe & ~LSM_UNSAFE_PTRACE_CAP) && !capable(CAP_SETUID)) { | |
135 | bprm->e_uid = current->uid; | |
136 | bprm->e_gid = current->gid; | |
137 | } | |
138 | } | |
139 | ||
140 | current->suid = current->euid = current->fsuid = bprm->e_uid; | |
141 | current->sgid = current->egid = current->fsgid = bprm->e_gid; | |
142 | ||
143 | dummy_capget(current, ¤t->cap_effective, ¤t->cap_inheritable, ¤t->cap_permitted); | |
144 | } | |
145 | ||
146 | static void dummy_bprm_post_apply_creds (struct linux_binprm *bprm) | |
147 | { | |
148 | return; | |
149 | } | |
150 | ||
151 | static int dummy_bprm_set_security (struct linux_binprm *bprm) | |
152 | { | |
153 | return 0; | |
154 | } | |
155 | ||
156 | static int dummy_bprm_check_security (struct linux_binprm *bprm) | |
157 | { | |
158 | return 0; | |
159 | } | |
160 | ||
161 | static int dummy_bprm_secureexec (struct linux_binprm *bprm) | |
162 | { | |
163 | /* The new userland will simply use the value provided | |
164 | in the AT_SECURE field to decide whether secure mode | |
165 | is required. Hence, this logic is required to preserve | |
166 | the legacy decision algorithm used by the old userland. */ | |
167 | return (current->euid != current->uid || | |
168 | current->egid != current->gid); | |
169 | } | |
170 | ||
171 | static int dummy_sb_alloc_security (struct super_block *sb) | |
172 | { | |
173 | return 0; | |
174 | } | |
175 | ||
176 | static void dummy_sb_free_security (struct super_block *sb) | |
177 | { | |
178 | return; | |
179 | } | |
180 | ||
181 | static int dummy_sb_copy_data (struct file_system_type *type, | |
182 | void *orig, void *copy) | |
183 | { | |
184 | return 0; | |
185 | } | |
186 | ||
187 | static int dummy_sb_kern_mount (struct super_block *sb, void *data) | |
188 | { | |
189 | return 0; | |
190 | } | |
191 | ||
726c3342 | 192 | static int dummy_sb_statfs (struct dentry *dentry) |
1da177e4 LT |
193 | { |
194 | return 0; | |
195 | } | |
196 | ||
197 | static int dummy_sb_mount (char *dev_name, struct nameidata *nd, char *type, | |
198 | unsigned long flags, void *data) | |
199 | { | |
200 | return 0; | |
201 | } | |
202 | ||
203 | static int dummy_sb_check_sb (struct vfsmount *mnt, struct nameidata *nd) | |
204 | { | |
205 | return 0; | |
206 | } | |
207 | ||
208 | static int dummy_sb_umount (struct vfsmount *mnt, int flags) | |
209 | { | |
210 | return 0; | |
211 | } | |
212 | ||
213 | static void dummy_sb_umount_close (struct vfsmount *mnt) | |
214 | { | |
215 | return; | |
216 | } | |
217 | ||
218 | static void dummy_sb_umount_busy (struct vfsmount *mnt) | |
219 | { | |
220 | return; | |
221 | } | |
222 | ||
223 | static void dummy_sb_post_remount (struct vfsmount *mnt, unsigned long flags, | |
224 | void *data) | |
225 | { | |
226 | return; | |
227 | } | |
228 | ||
229 | ||
230 | static void dummy_sb_post_mountroot (void) | |
231 | { | |
232 | return; | |
233 | } | |
234 | ||
235 | static void dummy_sb_post_addmount (struct vfsmount *mnt, struct nameidata *nd) | |
236 | { | |
237 | return; | |
238 | } | |
239 | ||
240 | static int dummy_sb_pivotroot (struct nameidata *old_nd, struct nameidata *new_nd) | |
241 | { | |
242 | return 0; | |
243 | } | |
244 | ||
245 | static void dummy_sb_post_pivotroot (struct nameidata *old_nd, struct nameidata *new_nd) | |
246 | { | |
247 | return; | |
248 | } | |
249 | ||
250 | static int dummy_inode_alloc_security (struct inode *inode) | |
251 | { | |
252 | return 0; | |
253 | } | |
254 | ||
255 | static void dummy_inode_free_security (struct inode *inode) | |
256 | { | |
257 | return; | |
258 | } | |
259 | ||
5e41ff9e SS |
260 | static int dummy_inode_init_security (struct inode *inode, struct inode *dir, |
261 | char **name, void **value, size_t *len) | |
262 | { | |
263 | return -EOPNOTSUPP; | |
264 | } | |
265 | ||
1da177e4 LT |
266 | static int dummy_inode_create (struct inode *inode, struct dentry *dentry, |
267 | int mask) | |
268 | { | |
269 | return 0; | |
270 | } | |
271 | ||
1da177e4 LT |
272 | static int dummy_inode_link (struct dentry *old_dentry, struct inode *inode, |
273 | struct dentry *new_dentry) | |
274 | { | |
275 | return 0; | |
276 | } | |
277 | ||
1da177e4 LT |
278 | static int dummy_inode_unlink (struct inode *inode, struct dentry *dentry) |
279 | { | |
280 | return 0; | |
281 | } | |
282 | ||
283 | static int dummy_inode_symlink (struct inode *inode, struct dentry *dentry, | |
284 | const char *name) | |
285 | { | |
286 | return 0; | |
287 | } | |
288 | ||
1da177e4 LT |
289 | static int dummy_inode_mkdir (struct inode *inode, struct dentry *dentry, |
290 | int mask) | |
291 | { | |
292 | return 0; | |
293 | } | |
294 | ||
1da177e4 LT |
295 | static int dummy_inode_rmdir (struct inode *inode, struct dentry *dentry) |
296 | { | |
297 | return 0; | |
298 | } | |
299 | ||
300 | static int dummy_inode_mknod (struct inode *inode, struct dentry *dentry, | |
301 | int mode, dev_t dev) | |
302 | { | |
303 | return 0; | |
304 | } | |
305 | ||
1da177e4 LT |
306 | static int dummy_inode_rename (struct inode *old_inode, |
307 | struct dentry *old_dentry, | |
308 | struct inode *new_inode, | |
309 | struct dentry *new_dentry) | |
310 | { | |
311 | return 0; | |
312 | } | |
313 | ||
1da177e4 LT |
314 | static int dummy_inode_readlink (struct dentry *dentry) |
315 | { | |
316 | return 0; | |
317 | } | |
318 | ||
319 | static int dummy_inode_follow_link (struct dentry *dentry, | |
320 | struct nameidata *nameidata) | |
321 | { | |
322 | return 0; | |
323 | } | |
324 | ||
325 | static int dummy_inode_permission (struct inode *inode, int mask, struct nameidata *nd) | |
326 | { | |
327 | return 0; | |
328 | } | |
329 | ||
330 | static int dummy_inode_setattr (struct dentry *dentry, struct iattr *iattr) | |
331 | { | |
332 | return 0; | |
333 | } | |
334 | ||
335 | static int dummy_inode_getattr (struct vfsmount *mnt, struct dentry *dentry) | |
336 | { | |
337 | return 0; | |
338 | } | |
339 | ||
340 | static void dummy_inode_delete (struct inode *ino) | |
341 | { | |
342 | return; | |
343 | } | |
344 | ||
345 | static int dummy_inode_setxattr (struct dentry *dentry, char *name, void *value, | |
346 | size_t size, int flags) | |
347 | { | |
348 | if (!strncmp(name, XATTR_SECURITY_PREFIX, | |
349 | sizeof(XATTR_SECURITY_PREFIX) - 1) && | |
350 | !capable(CAP_SYS_ADMIN)) | |
351 | return -EPERM; | |
352 | return 0; | |
353 | } | |
354 | ||
355 | static void dummy_inode_post_setxattr (struct dentry *dentry, char *name, void *value, | |
356 | size_t size, int flags) | |
357 | { | |
358 | } | |
359 | ||
360 | static int dummy_inode_getxattr (struct dentry *dentry, char *name) | |
361 | { | |
362 | return 0; | |
363 | } | |
364 | ||
365 | static int dummy_inode_listxattr (struct dentry *dentry) | |
366 | { | |
367 | return 0; | |
368 | } | |
369 | ||
370 | static int dummy_inode_removexattr (struct dentry *dentry, char *name) | |
371 | { | |
372 | if (!strncmp(name, XATTR_SECURITY_PREFIX, | |
373 | sizeof(XATTR_SECURITY_PREFIX) - 1) && | |
374 | !capable(CAP_SYS_ADMIN)) | |
375 | return -EPERM; | |
376 | return 0; | |
377 | } | |
378 | ||
7306a0b9 | 379 | static int dummy_inode_getsecurity(const struct inode *inode, const char *name, void *buffer, size_t size, int err) |
1da177e4 LT |
380 | { |
381 | return -EOPNOTSUPP; | |
382 | } | |
383 | ||
384 | static int dummy_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags) | |
385 | { | |
386 | return -EOPNOTSUPP; | |
387 | } | |
388 | ||
389 | static int dummy_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size) | |
390 | { | |
391 | return 0; | |
392 | } | |
393 | ||
7306a0b9 DK |
394 | static const char *dummy_inode_xattr_getsuffix(void) |
395 | { | |
396 | return NULL; | |
397 | } | |
398 | ||
1da177e4 LT |
399 | static int dummy_file_permission (struct file *file, int mask) |
400 | { | |
401 | return 0; | |
402 | } | |
403 | ||
404 | static int dummy_file_alloc_security (struct file *file) | |
405 | { | |
406 | return 0; | |
407 | } | |
408 | ||
409 | static void dummy_file_free_security (struct file *file) | |
410 | { | |
411 | return; | |
412 | } | |
413 | ||
414 | static int dummy_file_ioctl (struct file *file, unsigned int command, | |
415 | unsigned long arg) | |
416 | { | |
417 | return 0; | |
418 | } | |
419 | ||
420 | static int dummy_file_mmap (struct file *file, unsigned long reqprot, | |
421 | unsigned long prot, | |
ed032189 EP |
422 | unsigned long flags, |
423 | unsigned long addr, | |
424 | unsigned long addr_only) | |
1da177e4 | 425 | { |
ed032189 EP |
426 | if (addr < mmap_min_addr) |
427 | return -EACCES; | |
1da177e4 LT |
428 | return 0; |
429 | } | |
430 | ||
431 | static int dummy_file_mprotect (struct vm_area_struct *vma, | |
432 | unsigned long reqprot, | |
433 | unsigned long prot) | |
434 | { | |
435 | return 0; | |
436 | } | |
437 | ||
438 | static int dummy_file_lock (struct file *file, unsigned int cmd) | |
439 | { | |
440 | return 0; | |
441 | } | |
442 | ||
443 | static int dummy_file_fcntl (struct file *file, unsigned int cmd, | |
444 | unsigned long arg) | |
445 | { | |
446 | return 0; | |
447 | } | |
448 | ||
449 | static int dummy_file_set_fowner (struct file *file) | |
450 | { | |
451 | return 0; | |
452 | } | |
453 | ||
454 | static int dummy_file_send_sigiotask (struct task_struct *tsk, | |
455 | struct fown_struct *fown, int sig) | |
456 | { | |
457 | return 0; | |
458 | } | |
459 | ||
460 | static int dummy_file_receive (struct file *file) | |
461 | { | |
462 | return 0; | |
463 | } | |
464 | ||
788e7dd4 YN |
465 | static int dummy_dentry_open (struct file *file) |
466 | { | |
467 | return 0; | |
468 | } | |
469 | ||
1da177e4 LT |
470 | static int dummy_task_create (unsigned long clone_flags) |
471 | { | |
472 | return 0; | |
473 | } | |
474 | ||
475 | static int dummy_task_alloc_security (struct task_struct *p) | |
476 | { | |
477 | return 0; | |
478 | } | |
479 | ||
480 | static void dummy_task_free_security (struct task_struct *p) | |
481 | { | |
482 | return; | |
483 | } | |
484 | ||
485 | static int dummy_task_setuid (uid_t id0, uid_t id1, uid_t id2, int flags) | |
486 | { | |
487 | return 0; | |
488 | } | |
489 | ||
490 | static int dummy_task_post_setuid (uid_t id0, uid_t id1, uid_t id2, int flags) | |
491 | { | |
492 | dummy_capget(current, ¤t->cap_effective, ¤t->cap_inheritable, ¤t->cap_permitted); | |
493 | return 0; | |
494 | } | |
495 | ||
496 | static int dummy_task_setgid (gid_t id0, gid_t id1, gid_t id2, int flags) | |
497 | { | |
498 | return 0; | |
499 | } | |
500 | ||
501 | static int dummy_task_setpgid (struct task_struct *p, pid_t pgid) | |
502 | { | |
503 | return 0; | |
504 | } | |
505 | ||
506 | static int dummy_task_getpgid (struct task_struct *p) | |
507 | { | |
508 | return 0; | |
509 | } | |
510 | ||
511 | static int dummy_task_getsid (struct task_struct *p) | |
512 | { | |
513 | return 0; | |
514 | } | |
515 | ||
f9008e4c DQ |
516 | static void dummy_task_getsecid (struct task_struct *p, u32 *secid) |
517 | { } | |
518 | ||
1da177e4 LT |
519 | static int dummy_task_setgroups (struct group_info *group_info) |
520 | { | |
521 | return 0; | |
522 | } | |
523 | ||
524 | static int dummy_task_setnice (struct task_struct *p, int nice) | |
525 | { | |
526 | return 0; | |
527 | } | |
528 | ||
03e68060 JM |
529 | static int dummy_task_setioprio (struct task_struct *p, int ioprio) |
530 | { | |
531 | return 0; | |
532 | } | |
533 | ||
a1836a42 DQ |
534 | static int dummy_task_getioprio (struct task_struct *p) |
535 | { | |
536 | return 0; | |
537 | } | |
538 | ||
1da177e4 LT |
539 | static int dummy_task_setrlimit (unsigned int resource, struct rlimit *new_rlim) |
540 | { | |
541 | return 0; | |
542 | } | |
543 | ||
544 | static int dummy_task_setscheduler (struct task_struct *p, int policy, | |
545 | struct sched_param *lp) | |
546 | { | |
547 | return 0; | |
548 | } | |
549 | ||
550 | static int dummy_task_getscheduler (struct task_struct *p) | |
551 | { | |
552 | return 0; | |
553 | } | |
554 | ||
35601547 DQ |
555 | static int dummy_task_movememory (struct task_struct *p) |
556 | { | |
557 | return 0; | |
558 | } | |
559 | ||
1da177e4 LT |
560 | static int dummy_task_wait (struct task_struct *p) |
561 | { | |
562 | return 0; | |
563 | } | |
564 | ||
565 | static int dummy_task_kill (struct task_struct *p, struct siginfo *info, | |
f9008e4c | 566 | int sig, u32 secid) |
1da177e4 LT |
567 | { |
568 | return 0; | |
569 | } | |
570 | ||
571 | static int dummy_task_prctl (int option, unsigned long arg2, unsigned long arg3, | |
572 | unsigned long arg4, unsigned long arg5) | |
573 | { | |
574 | return 0; | |
575 | } | |
576 | ||
577 | static void dummy_task_reparent_to_init (struct task_struct *p) | |
578 | { | |
579 | p->euid = p->fsuid = 0; | |
580 | return; | |
581 | } | |
582 | ||
583 | static void dummy_task_to_inode(struct task_struct *p, struct inode *inode) | |
584 | { } | |
585 | ||
586 | static int dummy_ipc_permission (struct kern_ipc_perm *ipcp, short flag) | |
587 | { | |
588 | return 0; | |
589 | } | |
590 | ||
591 | static int dummy_msg_msg_alloc_security (struct msg_msg *msg) | |
592 | { | |
593 | return 0; | |
594 | } | |
595 | ||
596 | static void dummy_msg_msg_free_security (struct msg_msg *msg) | |
597 | { | |
598 | return; | |
599 | } | |
600 | ||
601 | static int dummy_msg_queue_alloc_security (struct msg_queue *msq) | |
602 | { | |
603 | return 0; | |
604 | } | |
605 | ||
606 | static void dummy_msg_queue_free_security (struct msg_queue *msq) | |
607 | { | |
608 | return; | |
609 | } | |
610 | ||
611 | static int dummy_msg_queue_associate (struct msg_queue *msq, | |
612 | int msqflg) | |
613 | { | |
614 | return 0; | |
615 | } | |
616 | ||
617 | static int dummy_msg_queue_msgctl (struct msg_queue *msq, int cmd) | |
618 | { | |
619 | return 0; | |
620 | } | |
621 | ||
622 | static int dummy_msg_queue_msgsnd (struct msg_queue *msq, struct msg_msg *msg, | |
623 | int msgflg) | |
624 | { | |
625 | return 0; | |
626 | } | |
627 | ||
628 | static int dummy_msg_queue_msgrcv (struct msg_queue *msq, struct msg_msg *msg, | |
629 | struct task_struct *target, long type, | |
630 | int mode) | |
631 | { | |
632 | return 0; | |
633 | } | |
634 | ||
635 | static int dummy_shm_alloc_security (struct shmid_kernel *shp) | |
636 | { | |
637 | return 0; | |
638 | } | |
639 | ||
640 | static void dummy_shm_free_security (struct shmid_kernel *shp) | |
641 | { | |
642 | return; | |
643 | } | |
644 | ||
645 | static int dummy_shm_associate (struct shmid_kernel *shp, int shmflg) | |
646 | { | |
647 | return 0; | |
648 | } | |
649 | ||
650 | static int dummy_shm_shmctl (struct shmid_kernel *shp, int cmd) | |
651 | { | |
652 | return 0; | |
653 | } | |
654 | ||
655 | static int dummy_shm_shmat (struct shmid_kernel *shp, char __user *shmaddr, | |
656 | int shmflg) | |
657 | { | |
658 | return 0; | |
659 | } | |
660 | ||
661 | static int dummy_sem_alloc_security (struct sem_array *sma) | |
662 | { | |
663 | return 0; | |
664 | } | |
665 | ||
666 | static void dummy_sem_free_security (struct sem_array *sma) | |
667 | { | |
668 | return; | |
669 | } | |
670 | ||
671 | static int dummy_sem_associate (struct sem_array *sma, int semflg) | |
672 | { | |
673 | return 0; | |
674 | } | |
675 | ||
676 | static int dummy_sem_semctl (struct sem_array *sma, int cmd) | |
677 | { | |
678 | return 0; | |
679 | } | |
680 | ||
681 | static int dummy_sem_semop (struct sem_array *sma, | |
682 | struct sembuf *sops, unsigned nsops, int alter) | |
683 | { | |
684 | return 0; | |
685 | } | |
686 | ||
687 | static int dummy_netlink_send (struct sock *sk, struct sk_buff *skb) | |
688 | { | |
689 | NETLINK_CB(skb).eff_cap = current->cap_effective; | |
690 | return 0; | |
691 | } | |
692 | ||
c7bdb545 | 693 | static int dummy_netlink_recv (struct sk_buff *skb, int cap) |
1da177e4 | 694 | { |
c7bdb545 | 695 | if (!cap_raised (NETLINK_CB (skb).eff_cap, cap)) |
1da177e4 LT |
696 | return -EPERM; |
697 | return 0; | |
698 | } | |
699 | ||
700 | #ifdef CONFIG_SECURITY_NETWORK | |
701 | static int dummy_unix_stream_connect (struct socket *sock, | |
702 | struct socket *other, | |
703 | struct sock *newsk) | |
704 | { | |
705 | return 0; | |
706 | } | |
707 | ||
708 | static int dummy_unix_may_send (struct socket *sock, | |
709 | struct socket *other) | |
710 | { | |
711 | return 0; | |
712 | } | |
713 | ||
714 | static int dummy_socket_create (int family, int type, | |
715 | int protocol, int kern) | |
716 | { | |
717 | return 0; | |
718 | } | |
719 | ||
7420ed23 VY |
720 | static int dummy_socket_post_create (struct socket *sock, int family, int type, |
721 | int protocol, int kern) | |
1da177e4 | 722 | { |
7420ed23 | 723 | return 0; |
1da177e4 LT |
724 | } |
725 | ||
726 | static int dummy_socket_bind (struct socket *sock, struct sockaddr *address, | |
727 | int addrlen) | |
728 | { | |
729 | return 0; | |
730 | } | |
731 | ||
732 | static int dummy_socket_connect (struct socket *sock, struct sockaddr *address, | |
733 | int addrlen) | |
734 | { | |
735 | return 0; | |
736 | } | |
737 | ||
738 | static int dummy_socket_listen (struct socket *sock, int backlog) | |
739 | { | |
740 | return 0; | |
741 | } | |
742 | ||
743 | static int dummy_socket_accept (struct socket *sock, struct socket *newsock) | |
744 | { | |
745 | return 0; | |
746 | } | |
747 | ||
748 | static void dummy_socket_post_accept (struct socket *sock, | |
749 | struct socket *newsock) | |
750 | { | |
751 | return; | |
752 | } | |
753 | ||
754 | static int dummy_socket_sendmsg (struct socket *sock, struct msghdr *msg, | |
755 | int size) | |
756 | { | |
757 | return 0; | |
758 | } | |
759 | ||
760 | static int dummy_socket_recvmsg (struct socket *sock, struct msghdr *msg, | |
761 | int size, int flags) | |
762 | { | |
763 | return 0; | |
764 | } | |
765 | ||
766 | static int dummy_socket_getsockname (struct socket *sock) | |
767 | { | |
768 | return 0; | |
769 | } | |
770 | ||
771 | static int dummy_socket_getpeername (struct socket *sock) | |
772 | { | |
773 | return 0; | |
774 | } | |
775 | ||
776 | static int dummy_socket_setsockopt (struct socket *sock, int level, int optname) | |
777 | { | |
778 | return 0; | |
779 | } | |
780 | ||
781 | static int dummy_socket_getsockopt (struct socket *sock, int level, int optname) | |
782 | { | |
783 | return 0; | |
784 | } | |
785 | ||
786 | static int dummy_socket_shutdown (struct socket *sock, int how) | |
787 | { | |
788 | return 0; | |
789 | } | |
790 | ||
791 | static int dummy_socket_sock_rcv_skb (struct sock *sk, struct sk_buff *skb) | |
792 | { | |
793 | return 0; | |
794 | } | |
795 | ||
2c7946a7 CZ |
796 | static int dummy_socket_getpeersec_stream(struct socket *sock, char __user *optval, |
797 | int __user *optlen, unsigned len) | |
798 | { | |
799 | return -ENOPROTOOPT; | |
800 | } | |
801 | ||
dc49c1f9 | 802 | static int dummy_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid) |
1da177e4 LT |
803 | { |
804 | return -ENOPROTOOPT; | |
805 | } | |
806 | ||
7d877f3b | 807 | static inline int dummy_sk_alloc_security (struct sock *sk, int family, gfp_t priority) |
1da177e4 LT |
808 | { |
809 | return 0; | |
810 | } | |
811 | ||
812 | static inline void dummy_sk_free_security (struct sock *sk) | |
813 | { | |
814 | } | |
df71837d | 815 | |
892c141e VY |
816 | static inline void dummy_sk_clone_security (const struct sock *sk, struct sock *newsk) |
817 | { | |
818 | } | |
819 | ||
beb8d13b | 820 | static inline void dummy_sk_getsecid(struct sock *sk, u32 *secid) |
df71837d | 821 | { |
df71837d | 822 | } |
4237c75c VY |
823 | |
824 | static inline void dummy_sock_graft(struct sock* sk, struct socket *parent) | |
825 | { | |
826 | } | |
827 | ||
828 | static inline int dummy_inet_conn_request(struct sock *sk, | |
829 | struct sk_buff *skb, struct request_sock *req) | |
830 | { | |
831 | return 0; | |
832 | } | |
833 | ||
834 | static inline void dummy_inet_csk_clone(struct sock *newsk, | |
835 | const struct request_sock *req) | |
836 | { | |
837 | } | |
838 | ||
6b877699 VY |
839 | static inline void dummy_inet_conn_established(struct sock *sk, |
840 | struct sk_buff *skb) | |
841 | { | |
842 | } | |
843 | ||
4237c75c VY |
844 | static inline void dummy_req_classify_flow(const struct request_sock *req, |
845 | struct flowi *fl) | |
846 | { | |
847 | } | |
1da177e4 LT |
848 | #endif /* CONFIG_SECURITY_NETWORK */ |
849 | ||
df71837d | 850 | #ifdef CONFIG_SECURITY_NETWORK_XFRM |
cb969f07 | 851 | static int dummy_xfrm_policy_alloc_security(struct xfrm_policy *xp, |
c1a856c9 | 852 | struct xfrm_user_sec_ctx *sec_ctx) |
df71837d TJ |
853 | { |
854 | return 0; | |
855 | } | |
856 | ||
857 | static inline int dummy_xfrm_policy_clone_security(struct xfrm_policy *old, struct xfrm_policy *new) | |
858 | { | |
859 | return 0; | |
860 | } | |
861 | ||
862 | static void dummy_xfrm_policy_free_security(struct xfrm_policy *xp) | |
863 | { | |
864 | } | |
865 | ||
c8c05a8e CZ |
866 | static int dummy_xfrm_policy_delete_security(struct xfrm_policy *xp) |
867 | { | |
868 | return 0; | |
869 | } | |
870 | ||
e0d1caa7 | 871 | static int dummy_xfrm_state_alloc_security(struct xfrm_state *x, |
c1a856c9 | 872 | struct xfrm_user_sec_ctx *sec_ctx, u32 secid) |
df71837d TJ |
873 | { |
874 | return 0; | |
875 | } | |
876 | ||
877 | static void dummy_xfrm_state_free_security(struct xfrm_state *x) | |
878 | { | |
879 | } | |
880 | ||
c8c05a8e CZ |
881 | static int dummy_xfrm_state_delete_security(struct xfrm_state *x) |
882 | { | |
883 | return 0; | |
884 | } | |
885 | ||
df71837d TJ |
886 | static int dummy_xfrm_policy_lookup(struct xfrm_policy *xp, u32 sk_sid, u8 dir) |
887 | { | |
888 | return 0; | |
889 | } | |
e0d1caa7 VY |
890 | |
891 | static int dummy_xfrm_state_pol_flow_match(struct xfrm_state *x, | |
892 | struct xfrm_policy *xp, struct flowi *fl) | |
893 | { | |
894 | return 1; | |
895 | } | |
896 | ||
beb8d13b | 897 | static int dummy_xfrm_decode_session(struct sk_buff *skb, u32 *fl, int ckall) |
e0d1caa7 VY |
898 | { |
899 | return 0; | |
900 | } | |
901 | ||
df71837d | 902 | #endif /* CONFIG_SECURITY_NETWORK_XFRM */ |
1da177e4 LT |
903 | static int dummy_register_security (const char *name, struct security_operations *ops) |
904 | { | |
905 | return -EINVAL; | |
906 | } | |
907 | ||
908 | static int dummy_unregister_security (const char *name, struct security_operations *ops) | |
909 | { | |
910 | return -EINVAL; | |
911 | } | |
912 | ||
913 | static void dummy_d_instantiate (struct dentry *dentry, struct inode *inode) | |
914 | { | |
915 | return; | |
916 | } | |
917 | ||
04ff9708 | 918 | static int dummy_getprocattr(struct task_struct *p, char *name, char **value) |
1da177e4 LT |
919 | { |
920 | return -EINVAL; | |
921 | } | |
922 | ||
923 | static int dummy_setprocattr(struct task_struct *p, char *name, void *value, size_t size) | |
924 | { | |
925 | return -EINVAL; | |
926 | } | |
927 | ||
dc49c1f9 CZ |
928 | static int dummy_secid_to_secctx(u32 secid, char **secdata, u32 *seclen) |
929 | { | |
930 | return -EOPNOTSUPP; | |
931 | } | |
932 | ||
933 | static void dummy_release_secctx(char *secdata, u32 seclen) | |
934 | { | |
935 | } | |
936 | ||
29db9190 | 937 | #ifdef CONFIG_KEYS |
7e047ef5 DH |
938 | static inline int dummy_key_alloc(struct key *key, struct task_struct *ctx, |
939 | unsigned long flags) | |
29db9190 DH |
940 | { |
941 | return 0; | |
942 | } | |
943 | ||
944 | static inline void dummy_key_free(struct key *key) | |
945 | { | |
946 | } | |
947 | ||
948 | static inline int dummy_key_permission(key_ref_t key_ref, | |
949 | struct task_struct *context, | |
950 | key_perm_t perm) | |
951 | { | |
952 | return 0; | |
953 | } | |
954 | #endif /* CONFIG_KEYS */ | |
1da177e4 LT |
955 | |
956 | struct security_operations dummy_security_ops; | |
957 | ||
958 | #define set_to_dummy_if_null(ops, function) \ | |
959 | do { \ | |
960 | if (!ops->function) { \ | |
961 | ops->function = dummy_##function; \ | |
962 | pr_debug("Had to override the " #function \ | |
963 | " security operation with the dummy one.\n");\ | |
964 | } \ | |
965 | } while (0) | |
966 | ||
967 | void security_fixup_ops (struct security_operations *ops) | |
968 | { | |
969 | set_to_dummy_if_null(ops, ptrace); | |
970 | set_to_dummy_if_null(ops, capget); | |
971 | set_to_dummy_if_null(ops, capset_check); | |
972 | set_to_dummy_if_null(ops, capset_set); | |
973 | set_to_dummy_if_null(ops, acct); | |
974 | set_to_dummy_if_null(ops, capable); | |
975 | set_to_dummy_if_null(ops, quotactl); | |
976 | set_to_dummy_if_null(ops, quota_on); | |
977 | set_to_dummy_if_null(ops, sysctl); | |
978 | set_to_dummy_if_null(ops, syslog); | |
979 | set_to_dummy_if_null(ops, settime); | |
980 | set_to_dummy_if_null(ops, vm_enough_memory); | |
981 | set_to_dummy_if_null(ops, bprm_alloc_security); | |
982 | set_to_dummy_if_null(ops, bprm_free_security); | |
983 | set_to_dummy_if_null(ops, bprm_apply_creds); | |
984 | set_to_dummy_if_null(ops, bprm_post_apply_creds); | |
985 | set_to_dummy_if_null(ops, bprm_set_security); | |
986 | set_to_dummy_if_null(ops, bprm_check_security); | |
987 | set_to_dummy_if_null(ops, bprm_secureexec); | |
988 | set_to_dummy_if_null(ops, sb_alloc_security); | |
989 | set_to_dummy_if_null(ops, sb_free_security); | |
990 | set_to_dummy_if_null(ops, sb_copy_data); | |
991 | set_to_dummy_if_null(ops, sb_kern_mount); | |
992 | set_to_dummy_if_null(ops, sb_statfs); | |
993 | set_to_dummy_if_null(ops, sb_mount); | |
994 | set_to_dummy_if_null(ops, sb_check_sb); | |
995 | set_to_dummy_if_null(ops, sb_umount); | |
996 | set_to_dummy_if_null(ops, sb_umount_close); | |
997 | set_to_dummy_if_null(ops, sb_umount_busy); | |
998 | set_to_dummy_if_null(ops, sb_post_remount); | |
999 | set_to_dummy_if_null(ops, sb_post_mountroot); | |
1000 | set_to_dummy_if_null(ops, sb_post_addmount); | |
1001 | set_to_dummy_if_null(ops, sb_pivotroot); | |
1002 | set_to_dummy_if_null(ops, sb_post_pivotroot); | |
1003 | set_to_dummy_if_null(ops, inode_alloc_security); | |
1004 | set_to_dummy_if_null(ops, inode_free_security); | |
5e41ff9e | 1005 | set_to_dummy_if_null(ops, inode_init_security); |
1da177e4 | 1006 | set_to_dummy_if_null(ops, inode_create); |
1da177e4 | 1007 | set_to_dummy_if_null(ops, inode_link); |
1da177e4 LT |
1008 | set_to_dummy_if_null(ops, inode_unlink); |
1009 | set_to_dummy_if_null(ops, inode_symlink); | |
1da177e4 | 1010 | set_to_dummy_if_null(ops, inode_mkdir); |
1da177e4 LT |
1011 | set_to_dummy_if_null(ops, inode_rmdir); |
1012 | set_to_dummy_if_null(ops, inode_mknod); | |
1da177e4 | 1013 | set_to_dummy_if_null(ops, inode_rename); |
1da177e4 LT |
1014 | set_to_dummy_if_null(ops, inode_readlink); |
1015 | set_to_dummy_if_null(ops, inode_follow_link); | |
1016 | set_to_dummy_if_null(ops, inode_permission); | |
1017 | set_to_dummy_if_null(ops, inode_setattr); | |
1018 | set_to_dummy_if_null(ops, inode_getattr); | |
1019 | set_to_dummy_if_null(ops, inode_delete); | |
1020 | set_to_dummy_if_null(ops, inode_setxattr); | |
1021 | set_to_dummy_if_null(ops, inode_post_setxattr); | |
1022 | set_to_dummy_if_null(ops, inode_getxattr); | |
1023 | set_to_dummy_if_null(ops, inode_listxattr); | |
1024 | set_to_dummy_if_null(ops, inode_removexattr); | |
7306a0b9 | 1025 | set_to_dummy_if_null(ops, inode_xattr_getsuffix); |
1da177e4 LT |
1026 | set_to_dummy_if_null(ops, inode_getsecurity); |
1027 | set_to_dummy_if_null(ops, inode_setsecurity); | |
1028 | set_to_dummy_if_null(ops, inode_listsecurity); | |
1029 | set_to_dummy_if_null(ops, file_permission); | |
1030 | set_to_dummy_if_null(ops, file_alloc_security); | |
1031 | set_to_dummy_if_null(ops, file_free_security); | |
1032 | set_to_dummy_if_null(ops, file_ioctl); | |
1033 | set_to_dummy_if_null(ops, file_mmap); | |
1034 | set_to_dummy_if_null(ops, file_mprotect); | |
1035 | set_to_dummy_if_null(ops, file_lock); | |
1036 | set_to_dummy_if_null(ops, file_fcntl); | |
1037 | set_to_dummy_if_null(ops, file_set_fowner); | |
1038 | set_to_dummy_if_null(ops, file_send_sigiotask); | |
1039 | set_to_dummy_if_null(ops, file_receive); | |
788e7dd4 | 1040 | set_to_dummy_if_null(ops, dentry_open); |
1da177e4 LT |
1041 | set_to_dummy_if_null(ops, task_create); |
1042 | set_to_dummy_if_null(ops, task_alloc_security); | |
1043 | set_to_dummy_if_null(ops, task_free_security); | |
1044 | set_to_dummy_if_null(ops, task_setuid); | |
1045 | set_to_dummy_if_null(ops, task_post_setuid); | |
1046 | set_to_dummy_if_null(ops, task_setgid); | |
1047 | set_to_dummy_if_null(ops, task_setpgid); | |
1048 | set_to_dummy_if_null(ops, task_getpgid); | |
1049 | set_to_dummy_if_null(ops, task_getsid); | |
f9008e4c | 1050 | set_to_dummy_if_null(ops, task_getsecid); |
1da177e4 LT |
1051 | set_to_dummy_if_null(ops, task_setgroups); |
1052 | set_to_dummy_if_null(ops, task_setnice); | |
03e68060 | 1053 | set_to_dummy_if_null(ops, task_setioprio); |
a1836a42 | 1054 | set_to_dummy_if_null(ops, task_getioprio); |
1da177e4 LT |
1055 | set_to_dummy_if_null(ops, task_setrlimit); |
1056 | set_to_dummy_if_null(ops, task_setscheduler); | |
1057 | set_to_dummy_if_null(ops, task_getscheduler); | |
35601547 | 1058 | set_to_dummy_if_null(ops, task_movememory); |
1da177e4 LT |
1059 | set_to_dummy_if_null(ops, task_wait); |
1060 | set_to_dummy_if_null(ops, task_kill); | |
1061 | set_to_dummy_if_null(ops, task_prctl); | |
1062 | set_to_dummy_if_null(ops, task_reparent_to_init); | |
1063 | set_to_dummy_if_null(ops, task_to_inode); | |
1064 | set_to_dummy_if_null(ops, ipc_permission); | |
1065 | set_to_dummy_if_null(ops, msg_msg_alloc_security); | |
1066 | set_to_dummy_if_null(ops, msg_msg_free_security); | |
1067 | set_to_dummy_if_null(ops, msg_queue_alloc_security); | |
1068 | set_to_dummy_if_null(ops, msg_queue_free_security); | |
1069 | set_to_dummy_if_null(ops, msg_queue_associate); | |
1070 | set_to_dummy_if_null(ops, msg_queue_msgctl); | |
1071 | set_to_dummy_if_null(ops, msg_queue_msgsnd); | |
1072 | set_to_dummy_if_null(ops, msg_queue_msgrcv); | |
1073 | set_to_dummy_if_null(ops, shm_alloc_security); | |
1074 | set_to_dummy_if_null(ops, shm_free_security); | |
1075 | set_to_dummy_if_null(ops, shm_associate); | |
1076 | set_to_dummy_if_null(ops, shm_shmctl); | |
1077 | set_to_dummy_if_null(ops, shm_shmat); | |
1078 | set_to_dummy_if_null(ops, sem_alloc_security); | |
1079 | set_to_dummy_if_null(ops, sem_free_security); | |
1080 | set_to_dummy_if_null(ops, sem_associate); | |
1081 | set_to_dummy_if_null(ops, sem_semctl); | |
1082 | set_to_dummy_if_null(ops, sem_semop); | |
1083 | set_to_dummy_if_null(ops, netlink_send); | |
1084 | set_to_dummy_if_null(ops, netlink_recv); | |
1085 | set_to_dummy_if_null(ops, register_security); | |
1086 | set_to_dummy_if_null(ops, unregister_security); | |
1087 | set_to_dummy_if_null(ops, d_instantiate); | |
1088 | set_to_dummy_if_null(ops, getprocattr); | |
1089 | set_to_dummy_if_null(ops, setprocattr); | |
dc49c1f9 CZ |
1090 | set_to_dummy_if_null(ops, secid_to_secctx); |
1091 | set_to_dummy_if_null(ops, release_secctx); | |
1da177e4 LT |
1092 | #ifdef CONFIG_SECURITY_NETWORK |
1093 | set_to_dummy_if_null(ops, unix_stream_connect); | |
1094 | set_to_dummy_if_null(ops, unix_may_send); | |
1095 | set_to_dummy_if_null(ops, socket_create); | |
1096 | set_to_dummy_if_null(ops, socket_post_create); | |
1097 | set_to_dummy_if_null(ops, socket_bind); | |
1098 | set_to_dummy_if_null(ops, socket_connect); | |
1099 | set_to_dummy_if_null(ops, socket_listen); | |
1100 | set_to_dummy_if_null(ops, socket_accept); | |
1101 | set_to_dummy_if_null(ops, socket_post_accept); | |
1102 | set_to_dummy_if_null(ops, socket_sendmsg); | |
1103 | set_to_dummy_if_null(ops, socket_recvmsg); | |
1104 | set_to_dummy_if_null(ops, socket_getsockname); | |
1105 | set_to_dummy_if_null(ops, socket_getpeername); | |
1106 | set_to_dummy_if_null(ops, socket_setsockopt); | |
1107 | set_to_dummy_if_null(ops, socket_getsockopt); | |
1108 | set_to_dummy_if_null(ops, socket_shutdown); | |
1109 | set_to_dummy_if_null(ops, socket_sock_rcv_skb); | |
c841aa03 ACM |
1110 | set_to_dummy_if_null(ops, socket_getpeersec_stream); |
1111 | set_to_dummy_if_null(ops, socket_getpeersec_dgram); | |
1da177e4 LT |
1112 | set_to_dummy_if_null(ops, sk_alloc_security); |
1113 | set_to_dummy_if_null(ops, sk_free_security); | |
892c141e | 1114 | set_to_dummy_if_null(ops, sk_clone_security); |
beb8d13b | 1115 | set_to_dummy_if_null(ops, sk_getsecid); |
4237c75c VY |
1116 | set_to_dummy_if_null(ops, sock_graft); |
1117 | set_to_dummy_if_null(ops, inet_conn_request); | |
1118 | set_to_dummy_if_null(ops, inet_csk_clone); | |
6b877699 | 1119 | set_to_dummy_if_null(ops, inet_conn_established); |
4237c75c | 1120 | set_to_dummy_if_null(ops, req_classify_flow); |
df71837d TJ |
1121 | #endif /* CONFIG_SECURITY_NETWORK */ |
1122 | #ifdef CONFIG_SECURITY_NETWORK_XFRM | |
1123 | set_to_dummy_if_null(ops, xfrm_policy_alloc_security); | |
1124 | set_to_dummy_if_null(ops, xfrm_policy_clone_security); | |
1125 | set_to_dummy_if_null(ops, xfrm_policy_free_security); | |
c8c05a8e | 1126 | set_to_dummy_if_null(ops, xfrm_policy_delete_security); |
df71837d TJ |
1127 | set_to_dummy_if_null(ops, xfrm_state_alloc_security); |
1128 | set_to_dummy_if_null(ops, xfrm_state_free_security); | |
c8c05a8e | 1129 | set_to_dummy_if_null(ops, xfrm_state_delete_security); |
df71837d | 1130 | set_to_dummy_if_null(ops, xfrm_policy_lookup); |
e0d1caa7 | 1131 | set_to_dummy_if_null(ops, xfrm_state_pol_flow_match); |
e0d1caa7 | 1132 | set_to_dummy_if_null(ops, xfrm_decode_session); |
df71837d | 1133 | #endif /* CONFIG_SECURITY_NETWORK_XFRM */ |
29db9190 DH |
1134 | #ifdef CONFIG_KEYS |
1135 | set_to_dummy_if_null(ops, key_alloc); | |
1136 | set_to_dummy_if_null(ops, key_free); | |
1137 | set_to_dummy_if_null(ops, key_permission); | |
1138 | #endif /* CONFIG_KEYS */ | |
1139 | ||
1da177e4 LT |
1140 | } |
1141 |