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10
11#define pr_fmt(fmt) "LSM: " fmt
12
13#include <linux/bpf.h>
14#include <linux/capability.h>
15#include <linux/dcache.h>
16#include <linux/export.h>
17#include <linux/init.h>
18#include <linux/kernel.h>
19#include <linux/kernel_read_file.h>
20#include <linux/lsm_hooks.h>
21#include <linux/integrity.h>
22#include <linux/ima.h>
23#include <linux/evm.h>
24#include <linux/fsnotify.h>
25#include <linux/mman.h>
26#include <linux/mount.h>
27#include <linux/personality.h>
28#include <linux/backing-dev.h>
29#include <linux/string.h>
30#include <linux/msg.h>
31#include <net/flow.h>
32
33#define MAX_LSM_EVM_XATTR 2
34
35
36#define LSM_COUNT (__end_lsm_info - __start_lsm_info)
37
38
39
40
41
42
43
44const char *const lockdown_reasons[LOCKDOWN_CONFIDENTIALITY_MAX+1] = {
45 [LOCKDOWN_NONE] = "none",
46 [LOCKDOWN_MODULE_SIGNATURE] = "unsigned module loading",
47 [LOCKDOWN_DEV_MEM] = "/dev/mem,kmem,port",
48 [LOCKDOWN_EFI_TEST] = "/dev/efi_test access",
49 [LOCKDOWN_KEXEC] = "kexec of unsigned images",
50 [LOCKDOWN_HIBERNATION] = "hibernation",
51 [LOCKDOWN_PCI_ACCESS] = "direct PCI access",
52 [LOCKDOWN_IOPORT] = "raw io port access",
53 [LOCKDOWN_MSR] = "raw MSR access",
54 [LOCKDOWN_ACPI_TABLES] = "modifying ACPI tables",
55 [LOCKDOWN_PCMCIA_CIS] = "direct PCMCIA CIS storage",
56 [LOCKDOWN_TIOCSSERIAL] = "reconfiguration of serial port IO",
57 [LOCKDOWN_MODULE_PARAMETERS] = "unsafe module parameters",
58 [LOCKDOWN_MMIOTRACE] = "unsafe mmio",
59 [LOCKDOWN_DEBUGFS] = "debugfs access",
60 [LOCKDOWN_XMON_WR] = "xmon write access",
61 [LOCKDOWN_INTEGRITY_MAX] = "integrity",
62 [LOCKDOWN_KCORE] = "/proc/kcore access",
63 [LOCKDOWN_KPROBES] = "use of kprobes",
64 [LOCKDOWN_BPF_READ] = "use of bpf to read kernel RAM",
65 [LOCKDOWN_PERF] = "unsafe use of perf",
66 [LOCKDOWN_TRACEFS] = "use of tracefs",
67 [LOCKDOWN_XMON_RW] = "xmon read and write access",
68 [LOCKDOWN_CONFIDENTIALITY_MAX] = "confidentiality",
69};
70
71struct security_hook_heads security_hook_heads __lsm_ro_after_init;
72static BLOCKING_NOTIFIER_HEAD(blocking_lsm_notifier_chain);
73
74static struct kmem_cache *lsm_file_cache;
75static struct kmem_cache *lsm_inode_cache;
76
77char *lsm_names;
78static struct lsm_blob_sizes blob_sizes __lsm_ro_after_init;
79
80
81static __initdata const char *chosen_lsm_order;
82static __initdata const char *chosen_major_lsm;
83
84static __initconst const char * const builtin_lsm_order = CONFIG_LSM;
85
86
87static __initdata struct lsm_info **ordered_lsms;
88static __initdata struct lsm_info *exclusive;
89
90static __initdata bool debug;
91#define init_debug(...) \
92 do { \
93 if (debug) \
94 pr_info(__VA_ARGS__); \
95 } while (0)
96
97static bool __init is_enabled(struct lsm_info *lsm)
98{
99 if (!lsm->enabled)
100 return false;
101
102 return *lsm->enabled;
103}
104
105
106static int lsm_enabled_true __initdata = 1;
107static int lsm_enabled_false __initdata = 0;
108static void __init set_enabled(struct lsm_info *lsm, bool enabled)
109{
110
111
112
113
114 if (!lsm->enabled) {
115 if (enabled)
116 lsm->enabled = &lsm_enabled_true;
117 else
118 lsm->enabled = &lsm_enabled_false;
119 } else if (lsm->enabled == &lsm_enabled_true) {
120 if (!enabled)
121 lsm->enabled = &lsm_enabled_false;
122 } else if (lsm->enabled == &lsm_enabled_false) {
123 if (enabled)
124 lsm->enabled = &lsm_enabled_true;
125 } else {
126 *lsm->enabled = enabled;
127 }
128}
129
130
131static bool __init exists_ordered_lsm(struct lsm_info *lsm)
132{
133 struct lsm_info **check;
134
135 for (check = ordered_lsms; *check; check++)
136 if (*check == lsm)
137 return true;
138
139 return false;
140}
141
142
143static int last_lsm __initdata;
144static void __init append_ordered_lsm(struct lsm_info *lsm, const char *from)
145{
146
147 if (exists_ordered_lsm(lsm))
148 return;
149
150 if (WARN(last_lsm == LSM_COUNT, "%s: out of LSM slots!?\n", from))
151 return;
152
153
154 if (!lsm->enabled)
155 lsm->enabled = &lsm_enabled_true;
156 ordered_lsms[last_lsm++] = lsm;
157
158 init_debug("%s ordering: %s (%sabled)\n", from, lsm->name,
159 is_enabled(lsm) ? "en" : "dis");
160}
161
162
163static bool __init lsm_allowed(struct lsm_info *lsm)
164{
165
166 if (!is_enabled(lsm))
167 return false;
168
169
170 if ((lsm->flags & LSM_FLAG_EXCLUSIVE) && exclusive) {
171 init_debug("exclusive disabled: %s\n", lsm->name);
172 return false;
173 }
174
175 return true;
176}
177
178static void __init lsm_set_blob_size(int *need, int *lbs)
179{
180 int offset;
181
182 if (*need > 0) {
183 offset = *lbs;
184 *lbs += *need;
185 *need = offset;
186 }
187}
188
189static void __init lsm_set_blob_sizes(struct lsm_blob_sizes *needed)
190{
191 if (!needed)
192 return;
193
194 lsm_set_blob_size(&needed->lbs_cred, &blob_sizes.lbs_cred);
195 lsm_set_blob_size(&needed->lbs_file, &blob_sizes.lbs_file);
196
197
198
199
200 if (needed->lbs_inode && blob_sizes.lbs_inode == 0)
201 blob_sizes.lbs_inode = sizeof(struct rcu_head);
202 lsm_set_blob_size(&needed->lbs_inode, &blob_sizes.lbs_inode);
203 lsm_set_blob_size(&needed->lbs_ipc, &blob_sizes.lbs_ipc);
204 lsm_set_blob_size(&needed->lbs_msg_msg, &blob_sizes.lbs_msg_msg);
205 lsm_set_blob_size(&needed->lbs_task, &blob_sizes.lbs_task);
206}
207
208
209static void __init prepare_lsm(struct lsm_info *lsm)
210{
211 int enabled = lsm_allowed(lsm);
212
213
214 set_enabled(lsm, enabled);
215
216
217 if (enabled) {
218 if ((lsm->flags & LSM_FLAG_EXCLUSIVE) && !exclusive) {
219 exclusive = lsm;
220 init_debug("exclusive chosen: %s\n", lsm->name);
221 }
222
223 lsm_set_blob_sizes(lsm->blobs);
224 }
225}
226
227
228static void __init initialize_lsm(struct lsm_info *lsm)
229{
230 if (is_enabled(lsm)) {
231 int ret;
232
233 init_debug("initializing %s\n", lsm->name);
234 ret = lsm->init();
235 WARN(ret, "%s failed to initialize: %d\n", lsm->name, ret);
236 }
237}
238
239
240static void __init ordered_lsm_parse(const char *order, const char *origin)
241{
242 struct lsm_info *lsm;
243 char *sep, *name, *next;
244
245
246 for (lsm = __start_lsm_info; lsm < __end_lsm_info; lsm++) {
247 if (lsm->order == LSM_ORDER_FIRST)
248 append_ordered_lsm(lsm, "first");
249 }
250
251
252 if (chosen_major_lsm) {
253 struct lsm_info *major;
254
255
256
257
258
259
260
261 for (major = __start_lsm_info; major < __end_lsm_info;
262 major++) {
263 if ((major->flags & LSM_FLAG_LEGACY_MAJOR) &&
264 strcmp(major->name, chosen_major_lsm) != 0) {
265 set_enabled(major, false);
266 init_debug("security=%s disabled: %s\n",
267 chosen_major_lsm, major->name);
268 }
269 }
270 }
271
272 sep = kstrdup(order, GFP_KERNEL);
273 next = sep;
274
275 while ((name = strsep(&next, ",")) != NULL) {
276 bool found = false;
277
278 for (lsm = __start_lsm_info; lsm < __end_lsm_info; lsm++) {
279 if (lsm->order == LSM_ORDER_MUTABLE &&
280 strcmp(lsm->name, name) == 0) {
281 append_ordered_lsm(lsm, origin);
282 found = true;
283 }
284 }
285
286 if (!found)
287 init_debug("%s ignored: %s\n", origin, name);
288 }
289
290
291 if (chosen_major_lsm) {
292 for (lsm = __start_lsm_info; lsm < __end_lsm_info; lsm++) {
293 if (exists_ordered_lsm(lsm))
294 continue;
295 if (strcmp(lsm->name, chosen_major_lsm) == 0)
296 append_ordered_lsm(lsm, "security=");
297 }
298 }
299
300
301 for (lsm = __start_lsm_info; lsm < __end_lsm_info; lsm++) {
302 if (exists_ordered_lsm(lsm))
303 continue;
304 set_enabled(lsm, false);
305 init_debug("%s disabled: %s\n", origin, lsm->name);
306 }
307
308 kfree(sep);
309}
310
311static void __init lsm_early_cred(struct cred *cred);
312static void __init lsm_early_task(struct task_struct *task);
313
314static int lsm_append(const char *new, char **result);
315
316static void __init ordered_lsm_init(void)
317{
318 struct lsm_info **lsm;
319
320 ordered_lsms = kcalloc(LSM_COUNT + 1, sizeof(*ordered_lsms),
321 GFP_KERNEL);
322
323 if (chosen_lsm_order) {
324 if (chosen_major_lsm) {
325 pr_info("security= is ignored because it is superseded by lsm=\n");
326 chosen_major_lsm = NULL;
327 }
328 ordered_lsm_parse(chosen_lsm_order, "cmdline");
329 } else
330 ordered_lsm_parse(builtin_lsm_order, "builtin");
331
332 for (lsm = ordered_lsms; *lsm; lsm++)
333 prepare_lsm(*lsm);
334
335 init_debug("cred blob size = %d\n", blob_sizes.lbs_cred);
336 init_debug("file blob size = %d\n", blob_sizes.lbs_file);
337 init_debug("inode blob size = %d\n", blob_sizes.lbs_inode);
338 init_debug("ipc blob size = %d\n", blob_sizes.lbs_ipc);
339 init_debug("msg_msg blob size = %d\n", blob_sizes.lbs_msg_msg);
340 init_debug("task blob size = %d\n", blob_sizes.lbs_task);
341
342
343
344
345 if (blob_sizes.lbs_file)
346 lsm_file_cache = kmem_cache_create("lsm_file_cache",
347 blob_sizes.lbs_file, 0,
348 SLAB_PANIC, NULL);
349 if (blob_sizes.lbs_inode)
350 lsm_inode_cache = kmem_cache_create("lsm_inode_cache",
351 blob_sizes.lbs_inode, 0,
352 SLAB_PANIC, NULL);
353
354 lsm_early_cred((struct cred *) current->cred);
355 lsm_early_task(current);
356 for (lsm = ordered_lsms; *lsm; lsm++)
357 initialize_lsm(*lsm);
358
359 kfree(ordered_lsms);
360}
361
362int __init early_security_init(void)
363{
364 int i;
365 struct hlist_head *list = (struct hlist_head *) &security_hook_heads;
366 struct lsm_info *lsm;
367
368 for (i = 0; i < sizeof(security_hook_heads) / sizeof(struct hlist_head);
369 i++)
370 INIT_HLIST_HEAD(&list[i]);
371
372 for (lsm = __start_early_lsm_info; lsm < __end_early_lsm_info; lsm++) {
373 if (!lsm->enabled)
374 lsm->enabled = &lsm_enabled_true;
375 prepare_lsm(lsm);
376 initialize_lsm(lsm);
377 }
378
379 return 0;
380}
381
382
383
384
385
386
387int __init security_init(void)
388{
389 struct lsm_info *lsm;
390
391 pr_info("Security Framework initializing\n");
392
393
394
395
396
397 for (lsm = __start_early_lsm_info; lsm < __end_early_lsm_info; lsm++) {
398 if (lsm->enabled)
399 lsm_append(lsm->name, &lsm_names);
400 }
401
402
403 ordered_lsm_init();
404
405 return 0;
406}
407
408
409static int __init choose_major_lsm(char *str)
410{
411 chosen_major_lsm = str;
412 return 1;
413}
414__setup("security=", choose_major_lsm);
415
416
417static int __init choose_lsm_order(char *str)
418{
419 chosen_lsm_order = str;
420 return 1;
421}
422__setup("lsm=", choose_lsm_order);
423
424
425static int __init enable_debug(char *str)
426{
427 debug = true;
428 return 1;
429}
430__setup("lsm.debug", enable_debug);
431
432static bool match_last_lsm(const char *list, const char *lsm)
433{
434 const char *last;
435
436 if (WARN_ON(!list || !lsm))
437 return false;
438 last = strrchr(list, ',');
439 if (last)
440
441 last++;
442 else
443 last = list;
444 return !strcmp(last, lsm);
445}
446
447static int lsm_append(const char *new, char **result)
448{
449 char *cp;
450
451 if (*result == NULL) {
452 *result = kstrdup(new, GFP_KERNEL);
453 if (*result == NULL)
454 return -ENOMEM;
455 } else {
456
457 if (match_last_lsm(*result, new))
458 return 0;
459 cp = kasprintf(GFP_KERNEL, "%s,%s", *result, new);
460 if (cp == NULL)
461 return -ENOMEM;
462 kfree(*result);
463 *result = cp;
464 }
465 return 0;
466}
467
468
469
470
471
472
473
474
475
476void __init security_add_hooks(struct security_hook_list *hooks, int count,
477 char *lsm)
478{
479 int i;
480
481 for (i = 0; i < count; i++) {
482 hooks[i].lsm = lsm;
483 hlist_add_tail_rcu(&hooks[i].list, hooks[i].head);
484 }
485
486
487
488
489
490 if (slab_is_available()) {
491 if (lsm_append(lsm, &lsm_names) < 0)
492 panic("%s - Cannot get early memory.\n", __func__);
493 }
494}
495
496int call_blocking_lsm_notifier(enum lsm_event event, void *data)
497{
498 return blocking_notifier_call_chain(&blocking_lsm_notifier_chain,
499 event, data);
500}
501EXPORT_SYMBOL(call_blocking_lsm_notifier);
502
503int register_blocking_lsm_notifier(struct notifier_block *nb)
504{
505 return blocking_notifier_chain_register(&blocking_lsm_notifier_chain,
506 nb);
507}
508EXPORT_SYMBOL(register_blocking_lsm_notifier);
509
510int unregister_blocking_lsm_notifier(struct notifier_block *nb)
511{
512 return blocking_notifier_chain_unregister(&blocking_lsm_notifier_chain,
513 nb);
514}
515EXPORT_SYMBOL(unregister_blocking_lsm_notifier);
516
517
518
519
520
521
522
523
524
525
526static int lsm_cred_alloc(struct cred *cred, gfp_t gfp)
527{
528 if (blob_sizes.lbs_cred == 0) {
529 cred->security = NULL;
530 return 0;
531 }
532
533 cred->security = kzalloc(blob_sizes.lbs_cred, gfp);
534 if (cred->security == NULL)
535 return -ENOMEM;
536 return 0;
537}
538
539
540
541
542
543
544
545static void __init lsm_early_cred(struct cred *cred)
546{
547 int rc = lsm_cred_alloc(cred, GFP_KERNEL);
548
549 if (rc)
550 panic("%s: Early cred alloc failed.\n", __func__);
551}
552
553
554
555
556
557
558
559
560
561static int lsm_file_alloc(struct file *file)
562{
563 if (!lsm_file_cache) {
564 file->f_security = NULL;
565 return 0;
566 }
567
568 file->f_security = kmem_cache_zalloc(lsm_file_cache, GFP_KERNEL);
569 if (file->f_security == NULL)
570 return -ENOMEM;
571 return 0;
572}
573
574
575
576
577
578
579
580
581
582int lsm_inode_alloc(struct inode *inode)
583{
584 if (!lsm_inode_cache) {
585 inode->i_security = NULL;
586 return 0;
587 }
588
589 inode->i_security = kmem_cache_zalloc(lsm_inode_cache, GFP_NOFS);
590 if (inode->i_security == NULL)
591 return -ENOMEM;
592 return 0;
593}
594
595
596
597
598
599
600
601
602
603static int lsm_task_alloc(struct task_struct *task)
604{
605 if (blob_sizes.lbs_task == 0) {
606 task->security = NULL;
607 return 0;
608 }
609
610 task->security = kzalloc(blob_sizes.lbs_task, GFP_KERNEL);
611 if (task->security == NULL)
612 return -ENOMEM;
613 return 0;
614}
615
616
617
618
619
620
621
622
623
624static int lsm_ipc_alloc(struct kern_ipc_perm *kip)
625{
626 if (blob_sizes.lbs_ipc == 0) {
627 kip->security = NULL;
628 return 0;
629 }
630
631 kip->security = kzalloc(blob_sizes.lbs_ipc, GFP_KERNEL);
632 if (kip->security == NULL)
633 return -ENOMEM;
634 return 0;
635}
636
637
638
639
640
641
642
643
644
645static int lsm_msg_msg_alloc(struct msg_msg *mp)
646{
647 if (blob_sizes.lbs_msg_msg == 0) {
648 mp->security = NULL;
649 return 0;
650 }
651
652 mp->security = kzalloc(blob_sizes.lbs_msg_msg, GFP_KERNEL);
653 if (mp->security == NULL)
654 return -ENOMEM;
655 return 0;
656}
657
658
659
660
661
662
663
664static void __init lsm_early_task(struct task_struct *task)
665{
666 int rc = lsm_task_alloc(task);
667
668 if (rc)
669 panic("%s: Early task alloc failed.\n", __func__);
670}
671
672
673
674
675
676
677
678
679
680
681#define LSM_RET_DEFAULT(NAME) (NAME##_default)
682#define DECLARE_LSM_RET_DEFAULT_void(DEFAULT, NAME)
683#define DECLARE_LSM_RET_DEFAULT_int(DEFAULT, NAME) \
684 static const int LSM_RET_DEFAULT(NAME) = (DEFAULT);
685#define LSM_HOOK(RET, DEFAULT, NAME, ...) \
686 DECLARE_LSM_RET_DEFAULT_##RET(DEFAULT, NAME)
687
688#include <linux/lsm_hook_defs.h>
689#undef LSM_HOOK
690
691
692
693
694
695
696
697
698
699
700
701#define call_void_hook(FUNC, ...) \
702 do { \
703 struct security_hook_list *P; \
704 \
705 hlist_for_each_entry(P, &security_hook_heads.FUNC, list) \
706 P->hook.FUNC(__VA_ARGS__); \
707 } while (0)
708
709#define call_int_hook(FUNC, IRC, ...) ({ \
710 int RC = IRC; \
711 do { \
712 struct security_hook_list *P; \
713 \
714 hlist_for_each_entry(P, &security_hook_heads.FUNC, list) { \
715 RC = P->hook.FUNC(__VA_ARGS__); \
716 if (RC != 0) \
717 break; \
718 } \
719 } while (0); \
720 RC; \
721})
722
723
724
725int security_binder_set_context_mgr(struct task_struct *mgr)
726{
727 return call_int_hook(binder_set_context_mgr, 0, mgr);
728}
729
730int security_binder_transaction(struct task_struct *from,
731 struct task_struct *to)
732{
733 return call_int_hook(binder_transaction, 0, from, to);
734}
735
736int security_binder_transfer_binder(struct task_struct *from,
737 struct task_struct *to)
738{
739 return call_int_hook(binder_transfer_binder, 0, from, to);
740}
741
742int security_binder_transfer_file(struct task_struct *from,
743 struct task_struct *to, struct file *file)
744{
745 return call_int_hook(binder_transfer_file, 0, from, to, file);
746}
747
748int security_ptrace_access_check(struct task_struct *child, unsigned int mode)
749{
750 return call_int_hook(ptrace_access_check, 0, child, mode);
751}
752
753int security_ptrace_traceme(struct task_struct *parent)
754{
755 return call_int_hook(ptrace_traceme, 0, parent);
756}
757
758int security_capget(struct task_struct *target,
759 kernel_cap_t *effective,
760 kernel_cap_t *inheritable,
761 kernel_cap_t *permitted)
762{
763 return call_int_hook(capget, 0, target,
764 effective, inheritable, permitted);
765}
766
767int security_capset(struct cred *new, const struct cred *old,
768 const kernel_cap_t *effective,
769 const kernel_cap_t *inheritable,
770 const kernel_cap_t *permitted)
771{
772 return call_int_hook(capset, 0, new, old,
773 effective, inheritable, permitted);
774}
775
776int security_capable(const struct cred *cred,
777 struct user_namespace *ns,
778 int cap,
779 unsigned int opts)
780{
781 return call_int_hook(capable, 0, cred, ns, cap, opts);
782}
783
784int security_quotactl(int cmds, int type, int id, struct super_block *sb)
785{
786 return call_int_hook(quotactl, 0, cmds, type, id, sb);
787}
788
789int security_quota_on(struct dentry *dentry)
790{
791 return call_int_hook(quota_on, 0, dentry);
792}
793
794int security_syslog(int type)
795{
796 return call_int_hook(syslog, 0, type);
797}
798
799int security_settime64(const struct timespec64 *ts, const struct timezone *tz)
800{
801 return call_int_hook(settime, 0, ts, tz);
802}
803
804int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
805{
806 struct security_hook_list *hp;
807 int cap_sys_admin = 1;
808 int rc;
809
810
811
812
813
814
815
816
817 hlist_for_each_entry(hp, &security_hook_heads.vm_enough_memory, list) {
818 rc = hp->hook.vm_enough_memory(mm, pages);
819 if (rc <= 0) {
820 cap_sys_admin = 0;
821 break;
822 }
823 }
824 return __vm_enough_memory(mm, pages, cap_sys_admin);
825}
826
827int security_bprm_creds_for_exec(struct linux_binprm *bprm)
828{
829 return call_int_hook(bprm_creds_for_exec, 0, bprm);
830}
831
832int security_bprm_creds_from_file(struct linux_binprm *bprm, struct file *file)
833{
834 return call_int_hook(bprm_creds_from_file, 0, bprm, file);
835}
836
837int security_bprm_check(struct linux_binprm *bprm)
838{
839 int ret;
840
841 ret = call_int_hook(bprm_check_security, 0, bprm);
842 if (ret)
843 return ret;
844 return ima_bprm_check(bprm);
845}
846
847void security_bprm_committing_creds(struct linux_binprm *bprm)
848{
849 call_void_hook(bprm_committing_creds, bprm);
850}
851
852void security_bprm_committed_creds(struct linux_binprm *bprm)
853{
854 call_void_hook(bprm_committed_creds, bprm);
855}
856
857int security_fs_context_dup(struct fs_context *fc, struct fs_context *src_fc)
858{
859 return call_int_hook(fs_context_dup, 0, fc, src_fc);
860}
861
862int security_fs_context_parse_param(struct fs_context *fc, struct fs_parameter *param)
863{
864 return call_int_hook(fs_context_parse_param, -ENOPARAM, fc, param);
865}
866
867int security_sb_alloc(struct super_block *sb)
868{
869 return call_int_hook(sb_alloc_security, 0, sb);
870}
871
872void security_sb_free(struct super_block *sb)
873{
874 call_void_hook(sb_free_security, sb);
875}
876
877void security_free_mnt_opts(void **mnt_opts)
878{
879 if (!*mnt_opts)
880 return;
881 call_void_hook(sb_free_mnt_opts, *mnt_opts);
882 *mnt_opts = NULL;
883}
884EXPORT_SYMBOL(security_free_mnt_opts);
885
886int security_sb_eat_lsm_opts(char *options, void **mnt_opts)
887{
888 return call_int_hook(sb_eat_lsm_opts, 0, options, mnt_opts);
889}
890EXPORT_SYMBOL(security_sb_eat_lsm_opts);
891
892int security_sb_remount(struct super_block *sb,
893 void *mnt_opts)
894{
895 return call_int_hook(sb_remount, 0, sb, mnt_opts);
896}
897EXPORT_SYMBOL(security_sb_remount);
898
899int security_sb_kern_mount(struct super_block *sb)
900{
901 return call_int_hook(sb_kern_mount, 0, sb);
902}
903
904int security_sb_show_options(struct seq_file *m, struct super_block *sb)
905{
906 return call_int_hook(sb_show_options, 0, m, sb);
907}
908
909int security_sb_statfs(struct dentry *dentry)
910{
911 return call_int_hook(sb_statfs, 0, dentry);
912}
913
914int security_sb_mount(const char *dev_name, const struct path *path,
915 const char *type, unsigned long flags, void *data)
916{
917 return call_int_hook(sb_mount, 0, dev_name, path, type, flags, data);
918}
919
920int security_sb_umount(struct vfsmount *mnt, int flags)
921{
922 return call_int_hook(sb_umount, 0, mnt, flags);
923}
924
925int security_sb_pivotroot(const struct path *old_path, const struct path *new_path)
926{
927 return call_int_hook(sb_pivotroot, 0, old_path, new_path);
928}
929
930int security_sb_set_mnt_opts(struct super_block *sb,
931 void *mnt_opts,
932 unsigned long kern_flags,
933 unsigned long *set_kern_flags)
934{
935 return call_int_hook(sb_set_mnt_opts,
936 mnt_opts ? -EOPNOTSUPP : 0, sb,
937 mnt_opts, kern_flags, set_kern_flags);
938}
939EXPORT_SYMBOL(security_sb_set_mnt_opts);
940
941int security_sb_clone_mnt_opts(const struct super_block *oldsb,
942 struct super_block *newsb,
943 unsigned long kern_flags,
944 unsigned long *set_kern_flags)
945{
946 return call_int_hook(sb_clone_mnt_opts, 0, oldsb, newsb,
947 kern_flags, set_kern_flags);
948}
949EXPORT_SYMBOL(security_sb_clone_mnt_opts);
950
951int security_add_mnt_opt(const char *option, const char *val, int len,
952 void **mnt_opts)
953{
954 return call_int_hook(sb_add_mnt_opt, -EINVAL,
955 option, val, len, mnt_opts);
956}
957EXPORT_SYMBOL(security_add_mnt_opt);
958
959int security_move_mount(const struct path *from_path, const struct path *to_path)
960{
961 return call_int_hook(move_mount, 0, from_path, to_path);
962}
963
964int security_path_notify(const struct path *path, u64 mask,
965 unsigned int obj_type)
966{
967 return call_int_hook(path_notify, 0, path, mask, obj_type);
968}
969
970int security_inode_alloc(struct inode *inode)
971{
972 int rc = lsm_inode_alloc(inode);
973
974 if (unlikely(rc))
975 return rc;
976 rc = call_int_hook(inode_alloc_security, 0, inode);
977 if (unlikely(rc))
978 security_inode_free(inode);
979 return rc;
980}
981
982static void inode_free_by_rcu(struct rcu_head *head)
983{
984
985
986
987 kmem_cache_free(lsm_inode_cache, head);
988}
989
990void security_inode_free(struct inode *inode)
991{
992 integrity_inode_free(inode);
993 call_void_hook(inode_free_security, inode);
994
995
996
997
998
999
1000
1001
1002
1003 if (inode->i_security)
1004 call_rcu((struct rcu_head *)inode->i_security,
1005 inode_free_by_rcu);
1006}
1007
1008int security_dentry_init_security(struct dentry *dentry, int mode,
1009 const struct qstr *name, void **ctx,
1010 u32 *ctxlen)
1011{
1012 return call_int_hook(dentry_init_security, -EOPNOTSUPP, dentry, mode,
1013 name, ctx, ctxlen);
1014}
1015EXPORT_SYMBOL(security_dentry_init_security);
1016
1017int security_dentry_create_files_as(struct dentry *dentry, int mode,
1018 struct qstr *name,
1019 const struct cred *old, struct cred *new)
1020{
1021 return call_int_hook(dentry_create_files_as, 0, dentry, mode,
1022 name, old, new);
1023}
1024EXPORT_SYMBOL(security_dentry_create_files_as);
1025
1026int security_inode_init_security(struct inode *inode, struct inode *dir,
1027 const struct qstr *qstr,
1028 const initxattrs initxattrs, void *fs_data)
1029{
1030 struct xattr new_xattrs[MAX_LSM_EVM_XATTR + 1];
1031 struct xattr *lsm_xattr, *evm_xattr, *xattr;
1032 int ret;
1033
1034 if (unlikely(IS_PRIVATE(inode)))
1035 return 0;
1036
1037 if (!initxattrs)
1038 return call_int_hook(inode_init_security, -EOPNOTSUPP, inode,
1039 dir, qstr, NULL, NULL, NULL);
1040 memset(new_xattrs, 0, sizeof(new_xattrs));
1041 lsm_xattr = new_xattrs;
1042 ret = call_int_hook(inode_init_security, -EOPNOTSUPP, inode, dir, qstr,
1043 &lsm_xattr->name,
1044 &lsm_xattr->value,
1045 &lsm_xattr->value_len);
1046 if (ret)
1047 goto out;
1048
1049 evm_xattr = lsm_xattr + 1;
1050 ret = evm_inode_init_security(inode, lsm_xattr, evm_xattr);
1051 if (ret)
1052 goto out;
1053 ret = initxattrs(inode, new_xattrs, fs_data);
1054out:
1055 for (xattr = new_xattrs; xattr->value != NULL; xattr++)
1056 kfree(xattr->value);
1057 return (ret == -EOPNOTSUPP) ? 0 : ret;
1058}
1059EXPORT_SYMBOL(security_inode_init_security);
1060
1061int security_old_inode_init_security(struct inode *inode, struct inode *dir,
1062 const struct qstr *qstr, const char **name,
1063 void **value, size_t *len)
1064{
1065 if (unlikely(IS_PRIVATE(inode)))
1066 return -EOPNOTSUPP;
1067 return call_int_hook(inode_init_security, -EOPNOTSUPP, inode, dir,
1068 qstr, name, value, len);
1069}
1070EXPORT_SYMBOL(security_old_inode_init_security);
1071
1072#ifdef CONFIG_SECURITY_PATH
1073int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode,
1074 unsigned int dev)
1075{
1076 if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
1077 return 0;
1078 return call_int_hook(path_mknod, 0, dir, dentry, mode, dev);
1079}
1080EXPORT_SYMBOL(security_path_mknod);
1081
1082int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode)
1083{
1084 if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
1085 return 0;
1086 return call_int_hook(path_mkdir, 0, dir, dentry, mode);
1087}
1088EXPORT_SYMBOL(security_path_mkdir);
1089
1090int security_path_rmdir(const struct path *dir, struct dentry *dentry)
1091{
1092 if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
1093 return 0;
1094 return call_int_hook(path_rmdir, 0, dir, dentry);
1095}
1096
1097int security_path_unlink(const struct path *dir, struct dentry *dentry)
1098{
1099 if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
1100 return 0;
1101 return call_int_hook(path_unlink, 0, dir, dentry);
1102}
1103EXPORT_SYMBOL(security_path_unlink);
1104
1105int security_path_symlink(const struct path *dir, struct dentry *dentry,
1106 const char *old_name)
1107{
1108 if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
1109 return 0;
1110 return call_int_hook(path_symlink, 0, dir, dentry, old_name);
1111}
1112
1113int security_path_link(struct dentry *old_dentry, const struct path *new_dir,
1114 struct dentry *new_dentry)
1115{
1116 if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry))))
1117 return 0;
1118 return call_int_hook(path_link, 0, old_dentry, new_dir, new_dentry);
1119}
1120
1121int security_path_rename(const struct path *old_dir, struct dentry *old_dentry,
1122 const struct path *new_dir, struct dentry *new_dentry,
1123 unsigned int flags)
1124{
1125 if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)) ||
1126 (d_is_positive(new_dentry) && IS_PRIVATE(d_backing_inode(new_dentry)))))
1127 return 0;
1128
1129 if (flags & RENAME_EXCHANGE) {
1130 int err = call_int_hook(path_rename, 0, new_dir, new_dentry,
1131 old_dir, old_dentry);
1132 if (err)
1133 return err;
1134 }
1135
1136 return call_int_hook(path_rename, 0, old_dir, old_dentry, new_dir,
1137 new_dentry);
1138}
1139EXPORT_SYMBOL(security_path_rename);
1140
1141int security_path_truncate(const struct path *path)
1142{
1143 if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry))))
1144 return 0;
1145 return call_int_hook(path_truncate, 0, path);
1146}
1147
1148int security_path_chmod(const struct path *path, umode_t mode)
1149{
1150 if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry))))
1151 return 0;
1152 return call_int_hook(path_chmod, 0, path, mode);
1153}
1154
1155int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid)
1156{
1157 if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry))))
1158 return 0;
1159 return call_int_hook(path_chown, 0, path, uid, gid);
1160}
1161
1162int security_path_chroot(const struct path *path)
1163{
1164 return call_int_hook(path_chroot, 0, path);
1165}
1166#endif
1167
1168int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode)
1169{
1170 if (unlikely(IS_PRIVATE(dir)))
1171 return 0;
1172 return call_int_hook(inode_create, 0, dir, dentry, mode);
1173}
1174EXPORT_SYMBOL_GPL(security_inode_create);
1175
1176int security_inode_link(struct dentry *old_dentry, struct inode *dir,
1177 struct dentry *new_dentry)
1178{
1179 if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry))))
1180 return 0;
1181 return call_int_hook(inode_link, 0, old_dentry, dir, new_dentry);
1182}
1183
1184int security_inode_unlink(struct inode *dir, struct dentry *dentry)
1185{
1186 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
1187 return 0;
1188 return call_int_hook(inode_unlink, 0, dir, dentry);
1189}
1190
1191int security_inode_symlink(struct inode *dir, struct dentry *dentry,
1192 const char *old_name)
1193{
1194 if (unlikely(IS_PRIVATE(dir)))
1195 return 0;
1196 return call_int_hook(inode_symlink, 0, dir, dentry, old_name);
1197}
1198
1199int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
1200{
1201 if (unlikely(IS_PRIVATE(dir)))
1202 return 0;
1203 return call_int_hook(inode_mkdir, 0, dir, dentry, mode);
1204}
1205EXPORT_SYMBOL_GPL(security_inode_mkdir);
1206
1207int security_inode_rmdir(struct inode *dir, struct dentry *dentry)
1208{
1209 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
1210 return 0;
1211 return call_int_hook(inode_rmdir, 0, dir, dentry);
1212}
1213
1214int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev)
1215{
1216 if (unlikely(IS_PRIVATE(dir)))
1217 return 0;
1218 return call_int_hook(inode_mknod, 0, dir, dentry, mode, dev);
1219}
1220
1221int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry,
1222 struct inode *new_dir, struct dentry *new_dentry,
1223 unsigned int flags)
1224{
1225 if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)) ||
1226 (d_is_positive(new_dentry) && IS_PRIVATE(d_backing_inode(new_dentry)))))
1227 return 0;
1228
1229 if (flags & RENAME_EXCHANGE) {
1230 int err = call_int_hook(inode_rename, 0, new_dir, new_dentry,
1231 old_dir, old_dentry);
1232 if (err)
1233 return err;
1234 }
1235
1236 return call_int_hook(inode_rename, 0, old_dir, old_dentry,
1237 new_dir, new_dentry);
1238}
1239
1240int security_inode_readlink(struct dentry *dentry)
1241{
1242 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
1243 return 0;
1244 return call_int_hook(inode_readlink, 0, dentry);
1245}
1246
1247int security_inode_follow_link(struct dentry *dentry, struct inode *inode,
1248 bool rcu)
1249{
1250 if (unlikely(IS_PRIVATE(inode)))
1251 return 0;
1252 return call_int_hook(inode_follow_link, 0, dentry, inode, rcu);
1253}
1254
1255int security_inode_permission(struct inode *inode, int mask)
1256{
1257 if (unlikely(IS_PRIVATE(inode)))
1258 return 0;
1259 return call_int_hook(inode_permission, 0, inode, mask);
1260}
1261
1262int security_inode_setattr(struct dentry *dentry, struct iattr *attr)
1263{
1264 int ret;
1265
1266 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
1267 return 0;
1268 ret = call_int_hook(inode_setattr, 0, dentry, attr);
1269 if (ret)
1270 return ret;
1271 return evm_inode_setattr(dentry, attr);
1272}
1273EXPORT_SYMBOL_GPL(security_inode_setattr);
1274
1275int security_inode_getattr(const struct path *path)
1276{
1277 if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry))))
1278 return 0;
1279 return call_int_hook(inode_getattr, 0, path);
1280}
1281
1282int security_inode_setxattr(struct dentry *dentry, const char *name,
1283 const void *value, size_t size, int flags)
1284{
1285 int ret;
1286
1287 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
1288 return 0;
1289
1290
1291
1292
1293 ret = call_int_hook(inode_setxattr, 1, dentry, name, value, size,
1294 flags);
1295
1296 if (ret == 1)
1297 ret = cap_inode_setxattr(dentry, name, value, size, flags);
1298 if (ret)
1299 return ret;
1300 ret = ima_inode_setxattr(dentry, name, value, size);
1301 if (ret)
1302 return ret;
1303 return evm_inode_setxattr(dentry, name, value, size);
1304}
1305
1306void security_inode_post_setxattr(struct dentry *dentry, const char *name,
1307 const void *value, size_t size, int flags)
1308{
1309 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
1310 return;
1311 call_void_hook(inode_post_setxattr, dentry, name, value, size, flags);
1312 evm_inode_post_setxattr(dentry, name, value, size);
1313}
1314
1315int security_inode_getxattr(struct dentry *dentry, const char *name)
1316{
1317 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
1318 return 0;
1319 return call_int_hook(inode_getxattr, 0, dentry, name);
1320}
1321
1322int security_inode_listxattr(struct dentry *dentry)
1323{
1324 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
1325 return 0;
1326 return call_int_hook(inode_listxattr, 0, dentry);
1327}
1328
1329int security_inode_removexattr(struct dentry *dentry, const char *name)
1330{
1331 int ret;
1332
1333 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
1334 return 0;
1335
1336
1337
1338
1339 ret = call_int_hook(inode_removexattr, 1, dentry, name);
1340 if (ret == 1)
1341 ret = cap_inode_removexattr(dentry, name);
1342 if (ret)
1343 return ret;
1344 ret = ima_inode_removexattr(dentry, name);
1345 if (ret)
1346 return ret;
1347 return evm_inode_removexattr(dentry, name);
1348}
1349
1350int security_inode_need_killpriv(struct dentry *dentry)
1351{
1352 return call_int_hook(inode_need_killpriv, 0, dentry);
1353}
1354
1355int security_inode_killpriv(struct dentry *dentry)
1356{
1357 return call_int_hook(inode_killpriv, 0, dentry);
1358}
1359
1360int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc)
1361{
1362 struct security_hook_list *hp;
1363 int rc;
1364
1365 if (unlikely(IS_PRIVATE(inode)))
1366 return LSM_RET_DEFAULT(inode_getsecurity);
1367
1368
1369
1370 hlist_for_each_entry(hp, &security_hook_heads.inode_getsecurity, list) {
1371 rc = hp->hook.inode_getsecurity(inode, name, buffer, alloc);
1372 if (rc != LSM_RET_DEFAULT(inode_getsecurity))
1373 return rc;
1374 }
1375 return LSM_RET_DEFAULT(inode_getsecurity);
1376}
1377
1378int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
1379{
1380 struct security_hook_list *hp;
1381 int rc;
1382
1383 if (unlikely(IS_PRIVATE(inode)))
1384 return LSM_RET_DEFAULT(inode_setsecurity);
1385
1386
1387
1388 hlist_for_each_entry(hp, &security_hook_heads.inode_setsecurity, list) {
1389 rc = hp->hook.inode_setsecurity(inode, name, value, size,
1390 flags);
1391 if (rc != LSM_RET_DEFAULT(inode_setsecurity))
1392 return rc;
1393 }
1394 return LSM_RET_DEFAULT(inode_setsecurity);
1395}
1396
1397int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
1398{
1399 if (unlikely(IS_PRIVATE(inode)))
1400 return 0;
1401 return call_int_hook(inode_listsecurity, 0, inode, buffer, buffer_size);
1402}
1403EXPORT_SYMBOL(security_inode_listsecurity);
1404
1405void security_inode_getsecid(struct inode *inode, u32 *secid)
1406{
1407 call_void_hook(inode_getsecid, inode, secid);
1408}
1409
1410int security_inode_copy_up(struct dentry *src, struct cred **new)
1411{
1412 return call_int_hook(inode_copy_up, 0, src, new);
1413}
1414EXPORT_SYMBOL(security_inode_copy_up);
1415
1416int security_inode_copy_up_xattr(const char *name)
1417{
1418 struct security_hook_list *hp;
1419 int rc;
1420
1421
1422
1423
1424
1425
1426 hlist_for_each_entry(hp,
1427 &security_hook_heads.inode_copy_up_xattr, list) {
1428 rc = hp->hook.inode_copy_up_xattr(name);
1429 if (rc != LSM_RET_DEFAULT(inode_copy_up_xattr))
1430 return rc;
1431 }
1432
1433 return LSM_RET_DEFAULT(inode_copy_up_xattr);
1434}
1435EXPORT_SYMBOL(security_inode_copy_up_xattr);
1436
1437int security_kernfs_init_security(struct kernfs_node *kn_dir,
1438 struct kernfs_node *kn)
1439{
1440 return call_int_hook(kernfs_init_security, 0, kn_dir, kn);
1441}
1442
1443int security_file_permission(struct file *file, int mask)
1444{
1445 int ret;
1446
1447 ret = call_int_hook(file_permission, 0, file, mask);
1448 if (ret)
1449 return ret;
1450
1451 return fsnotify_perm(file, mask);
1452}
1453
1454int security_file_alloc(struct file *file)
1455{
1456 int rc = lsm_file_alloc(file);
1457
1458 if (rc)
1459 return rc;
1460 rc = call_int_hook(file_alloc_security, 0, file);
1461 if (unlikely(rc))
1462 security_file_free(file);
1463 return rc;
1464}
1465
1466void security_file_free(struct file *file)
1467{
1468 void *blob;
1469
1470 call_void_hook(file_free_security, file);
1471
1472 blob = file->f_security;
1473 if (blob) {
1474 file->f_security = NULL;
1475 kmem_cache_free(lsm_file_cache, blob);
1476 }
1477}
1478
1479int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
1480{
1481 return call_int_hook(file_ioctl, 0, file, cmd, arg);
1482}
1483EXPORT_SYMBOL_GPL(security_file_ioctl);
1484
1485static inline unsigned long mmap_prot(struct file *file, unsigned long prot)
1486{
1487
1488
1489
1490
1491 if ((prot & (PROT_READ | PROT_EXEC)) != PROT_READ)
1492 return prot;
1493 if (!(current->personality & READ_IMPLIES_EXEC))
1494 return prot;
1495
1496
1497
1498 if (!file)
1499 return prot | PROT_EXEC;
1500
1501
1502
1503
1504 if (!path_noexec(&file->f_path)) {
1505#ifndef CONFIG_MMU
1506 if (file->f_op->mmap_capabilities) {
1507 unsigned caps = file->f_op->mmap_capabilities(file);
1508 if (!(caps & NOMMU_MAP_EXEC))
1509 return prot;
1510 }
1511#endif
1512 return prot | PROT_EXEC;
1513 }
1514
1515 return prot;
1516}
1517
1518int security_mmap_file(struct file *file, unsigned long prot,
1519 unsigned long flags)
1520{
1521 int ret;
1522 ret = call_int_hook(mmap_file, 0, file, prot,
1523 mmap_prot(file, prot), flags);
1524 if (ret)
1525 return ret;
1526 return ima_file_mmap(file, prot);
1527}
1528
1529int security_mmap_addr(unsigned long addr)
1530{
1531 return call_int_hook(mmap_addr, 0, addr);
1532}
1533
1534int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
1535 unsigned long prot)
1536{
1537 int ret;
1538
1539 ret = call_int_hook(file_mprotect, 0, vma, reqprot, prot);
1540 if (ret)
1541 return ret;
1542 return ima_file_mprotect(vma, prot);
1543}
1544
1545int security_file_lock(struct file *file, unsigned int cmd)
1546{
1547 return call_int_hook(file_lock, 0, file, cmd);
1548}
1549
1550int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg)
1551{
1552 return call_int_hook(file_fcntl, 0, file, cmd, arg);
1553}
1554
1555void security_file_set_fowner(struct file *file)
1556{
1557 call_void_hook(file_set_fowner, file);
1558}
1559
1560int security_file_send_sigiotask(struct task_struct *tsk,
1561 struct fown_struct *fown, int sig)
1562{
1563 return call_int_hook(file_send_sigiotask, 0, tsk, fown, sig);
1564}
1565
1566int security_file_receive(struct file *file)
1567{
1568 return call_int_hook(file_receive, 0, file);
1569}
1570
1571int security_file_open(struct file *file)
1572{
1573 int ret;
1574
1575 ret = call_int_hook(file_open, 0, file);
1576 if (ret)
1577 return ret;
1578
1579 return fsnotify_perm(file, MAY_OPEN);
1580}
1581
1582int security_task_alloc(struct task_struct *task, unsigned long clone_flags)
1583{
1584 int rc = lsm_task_alloc(task);
1585
1586 if (rc)
1587 return rc;
1588 rc = call_int_hook(task_alloc, 0, task, clone_flags);
1589 if (unlikely(rc))
1590 security_task_free(task);
1591 return rc;
1592}
1593
1594void security_task_free(struct task_struct *task)
1595{
1596 call_void_hook(task_free, task);
1597
1598 kfree(task->security);
1599 task->security = NULL;
1600}
1601
1602int security_cred_alloc_blank(struct cred *cred, gfp_t gfp)
1603{
1604 int rc = lsm_cred_alloc(cred, gfp);
1605
1606 if (rc)
1607 return rc;
1608
1609 rc = call_int_hook(cred_alloc_blank, 0, cred, gfp);
1610 if (unlikely(rc))
1611 security_cred_free(cred);
1612 return rc;
1613}
1614
1615void security_cred_free(struct cred *cred)
1616{
1617
1618
1619
1620
1621 if (unlikely(cred->security == NULL))
1622 return;
1623
1624 call_void_hook(cred_free, cred);
1625
1626 kfree(cred->security);
1627 cred->security = NULL;
1628}
1629
1630int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp)
1631{
1632 int rc = lsm_cred_alloc(new, gfp);
1633
1634 if (rc)
1635 return rc;
1636
1637 rc = call_int_hook(cred_prepare, 0, new, old, gfp);
1638 if (unlikely(rc))
1639 security_cred_free(new);
1640 return rc;
1641}
1642
1643void security_transfer_creds(struct cred *new, const struct cred *old)
1644{
1645 call_void_hook(cred_transfer, new, old);
1646}
1647
1648void security_cred_getsecid(const struct cred *c, u32 *secid)
1649{
1650 *secid = 0;
1651 call_void_hook(cred_getsecid, c, secid);
1652}
1653EXPORT_SYMBOL(security_cred_getsecid);
1654
1655int security_kernel_act_as(struct cred *new, u32 secid)
1656{
1657 return call_int_hook(kernel_act_as, 0, new, secid);
1658}
1659
1660int security_kernel_create_files_as(struct cred *new, struct inode *inode)
1661{
1662 return call_int_hook(kernel_create_files_as, 0, new, inode);
1663}
1664
1665int security_kernel_module_request(char *kmod_name)
1666{
1667 int ret;
1668
1669 ret = call_int_hook(kernel_module_request, 0, kmod_name);
1670 if (ret)
1671 return ret;
1672 return integrity_kernel_module_request(kmod_name);
1673}
1674
1675int security_kernel_read_file(struct file *file, enum kernel_read_file_id id,
1676 bool contents)
1677{
1678 int ret;
1679
1680 ret = call_int_hook(kernel_read_file, 0, file, id, contents);
1681 if (ret)
1682 return ret;
1683 return ima_read_file(file, id, contents);
1684}
1685EXPORT_SYMBOL_GPL(security_kernel_read_file);
1686
1687int security_kernel_post_read_file(struct file *file, char *buf, loff_t size,
1688 enum kernel_read_file_id id)
1689{
1690 int ret;
1691
1692 ret = call_int_hook(kernel_post_read_file, 0, file, buf, size, id);
1693 if (ret)
1694 return ret;
1695 return ima_post_read_file(file, buf, size, id);
1696}
1697EXPORT_SYMBOL_GPL(security_kernel_post_read_file);
1698
1699int security_kernel_load_data(enum kernel_load_data_id id, bool contents)
1700{
1701 int ret;
1702
1703 ret = call_int_hook(kernel_load_data, 0, id, contents);
1704 if (ret)
1705 return ret;
1706 return ima_load_data(id, contents);
1707}
1708EXPORT_SYMBOL_GPL(security_kernel_load_data);
1709
1710int security_kernel_post_load_data(char *buf, loff_t size,
1711 enum kernel_load_data_id id,
1712 char *description)
1713{
1714 int ret;
1715
1716 ret = call_int_hook(kernel_post_load_data, 0, buf, size, id,
1717 description);
1718 if (ret)
1719 return ret;
1720 return ima_post_load_data(buf, size, id, description);
1721}
1722EXPORT_SYMBOL_GPL(security_kernel_post_load_data);
1723
1724int security_task_fix_setuid(struct cred *new, const struct cred *old,
1725 int flags)
1726{
1727 return call_int_hook(task_fix_setuid, 0, new, old, flags);
1728}
1729
1730int security_task_fix_setgid(struct cred *new, const struct cred *old,
1731 int flags)
1732{
1733 return call_int_hook(task_fix_setgid, 0, new, old, flags);
1734}
1735
1736int security_task_setpgid(struct task_struct *p, pid_t pgid)
1737{
1738 return call_int_hook(task_setpgid, 0, p, pgid);
1739}
1740
1741int security_task_getpgid(struct task_struct *p)
1742{
1743 return call_int_hook(task_getpgid, 0, p);
1744}
1745
1746int security_task_getsid(struct task_struct *p)
1747{
1748 return call_int_hook(task_getsid, 0, p);
1749}
1750
1751void security_task_getsecid(struct task_struct *p, u32 *secid)
1752{
1753 *secid = 0;
1754 call_void_hook(task_getsecid, p, secid);
1755}
1756EXPORT_SYMBOL(security_task_getsecid);
1757
1758int security_task_setnice(struct task_struct *p, int nice)
1759{
1760 return call_int_hook(task_setnice, 0, p, nice);
1761}
1762
1763int security_task_setioprio(struct task_struct *p, int ioprio)
1764{
1765 return call_int_hook(task_setioprio, 0, p, ioprio);
1766}
1767
1768int security_task_getioprio(struct task_struct *p)
1769{
1770 return call_int_hook(task_getioprio, 0, p);
1771}
1772
1773int security_task_prlimit(const struct cred *cred, const struct cred *tcred,
1774 unsigned int flags)
1775{
1776 return call_int_hook(task_prlimit, 0, cred, tcred, flags);
1777}
1778
1779int security_task_setrlimit(struct task_struct *p, unsigned int resource,
1780 struct rlimit *new_rlim)
1781{
1782 return call_int_hook(task_setrlimit, 0, p, resource, new_rlim);
1783}
1784
1785int security_task_setscheduler(struct task_struct *p)
1786{
1787 return call_int_hook(task_setscheduler, 0, p);
1788}
1789
1790int security_task_getscheduler(struct task_struct *p)
1791{
1792 return call_int_hook(task_getscheduler, 0, p);
1793}
1794
1795int security_task_movememory(struct task_struct *p)
1796{
1797 return call_int_hook(task_movememory, 0, p);
1798}
1799
1800int security_task_kill(struct task_struct *p, struct kernel_siginfo *info,
1801 int sig, const struct cred *cred)
1802{
1803 return call_int_hook(task_kill, 0, p, info, sig, cred);
1804}
1805
1806int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
1807 unsigned long arg4, unsigned long arg5)
1808{
1809 int thisrc;
1810 int rc = LSM_RET_DEFAULT(task_prctl);
1811 struct security_hook_list *hp;
1812
1813 hlist_for_each_entry(hp, &security_hook_heads.task_prctl, list) {
1814 thisrc = hp->hook.task_prctl(option, arg2, arg3, arg4, arg5);
1815 if (thisrc != LSM_RET_DEFAULT(task_prctl)) {
1816 rc = thisrc;
1817 if (thisrc != 0)
1818 break;
1819 }
1820 }
1821 return rc;
1822}
1823
1824void security_task_to_inode(struct task_struct *p, struct inode *inode)
1825{
1826 call_void_hook(task_to_inode, p, inode);
1827}
1828
1829int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag)
1830{
1831 return call_int_hook(ipc_permission, 0, ipcp, flag);
1832}
1833
1834void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
1835{
1836 *secid = 0;
1837 call_void_hook(ipc_getsecid, ipcp, secid);
1838}
1839
1840int security_msg_msg_alloc(struct msg_msg *msg)
1841{
1842 int rc = lsm_msg_msg_alloc(msg);
1843
1844 if (unlikely(rc))
1845 return rc;
1846 rc = call_int_hook(msg_msg_alloc_security, 0, msg);
1847 if (unlikely(rc))
1848 security_msg_msg_free(msg);
1849 return rc;
1850}
1851
1852void security_msg_msg_free(struct msg_msg *msg)
1853{
1854 call_void_hook(msg_msg_free_security, msg);
1855 kfree(msg->security);
1856 msg->security = NULL;
1857}
1858
1859int security_msg_queue_alloc(struct kern_ipc_perm *msq)
1860{
1861 int rc = lsm_ipc_alloc(msq);
1862
1863 if (unlikely(rc))
1864 return rc;
1865 rc = call_int_hook(msg_queue_alloc_security, 0, msq);
1866 if (unlikely(rc))
1867 security_msg_queue_free(msq);
1868 return rc;
1869}
1870
1871void security_msg_queue_free(struct kern_ipc_perm *msq)
1872{
1873 call_void_hook(msg_queue_free_security, msq);
1874 kfree(msq->security);
1875 msq->security = NULL;
1876}
1877
1878int security_msg_queue_associate(struct kern_ipc_perm *msq, int msqflg)
1879{
1880 return call_int_hook(msg_queue_associate, 0, msq, msqflg);
1881}
1882
1883int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd)
1884{
1885 return call_int_hook(msg_queue_msgctl, 0, msq, cmd);
1886}
1887
1888int security_msg_queue_msgsnd(struct kern_ipc_perm *msq,
1889 struct msg_msg *msg, int msqflg)
1890{
1891 return call_int_hook(msg_queue_msgsnd, 0, msq, msg, msqflg);
1892}
1893
1894int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, struct msg_msg *msg,
1895 struct task_struct *target, long type, int mode)
1896{
1897 return call_int_hook(msg_queue_msgrcv, 0, msq, msg, target, type, mode);
1898}
1899
1900int security_shm_alloc(struct kern_ipc_perm *shp)
1901{
1902 int rc = lsm_ipc_alloc(shp);
1903
1904 if (unlikely(rc))
1905 return rc;
1906 rc = call_int_hook(shm_alloc_security, 0, shp);
1907 if (unlikely(rc))
1908 security_shm_free(shp);
1909 return rc;
1910}
1911
1912void security_shm_free(struct kern_ipc_perm *shp)
1913{
1914 call_void_hook(shm_free_security, shp);
1915 kfree(shp->security);
1916 shp->security = NULL;
1917}
1918
1919int security_shm_associate(struct kern_ipc_perm *shp, int shmflg)
1920{
1921 return call_int_hook(shm_associate, 0, shp, shmflg);
1922}
1923
1924int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd)
1925{
1926 return call_int_hook(shm_shmctl, 0, shp, cmd);
1927}
1928
1929int security_shm_shmat(struct kern_ipc_perm *shp, char __user *shmaddr, int shmflg)
1930{
1931 return call_int_hook(shm_shmat, 0, shp, shmaddr, shmflg);
1932}
1933
1934int security_sem_alloc(struct kern_ipc_perm *sma)
1935{
1936 int rc = lsm_ipc_alloc(sma);
1937
1938 if (unlikely(rc))
1939 return rc;
1940 rc = call_int_hook(sem_alloc_security, 0, sma);
1941 if (unlikely(rc))
1942 security_sem_free(sma);
1943 return rc;
1944}
1945
1946void security_sem_free(struct kern_ipc_perm *sma)
1947{
1948 call_void_hook(sem_free_security, sma);
1949 kfree(sma->security);
1950 sma->security = NULL;
1951}
1952
1953int security_sem_associate(struct kern_ipc_perm *sma, int semflg)
1954{
1955 return call_int_hook(sem_associate, 0, sma, semflg);
1956}
1957
1958int security_sem_semctl(struct kern_ipc_perm *sma, int cmd)
1959{
1960 return call_int_hook(sem_semctl, 0, sma, cmd);
1961}
1962
1963int security_sem_semop(struct kern_ipc_perm *sma, struct sembuf *sops,
1964 unsigned nsops, int alter)
1965{
1966 return call_int_hook(sem_semop, 0, sma, sops, nsops, alter);
1967}
1968
1969void security_d_instantiate(struct dentry *dentry, struct inode *inode)
1970{
1971 if (unlikely(inode && IS_PRIVATE(inode)))
1972 return;
1973 call_void_hook(d_instantiate, dentry, inode);
1974}
1975EXPORT_SYMBOL(security_d_instantiate);
1976
1977int security_getprocattr(struct task_struct *p, const char *lsm, char *name,
1978 char **value)
1979{
1980 struct security_hook_list *hp;
1981
1982 hlist_for_each_entry(hp, &security_hook_heads.getprocattr, list) {
1983 if (lsm != NULL && strcmp(lsm, hp->lsm))
1984 continue;
1985 return hp->hook.getprocattr(p, name, value);
1986 }
1987 return LSM_RET_DEFAULT(getprocattr);
1988}
1989
1990int security_setprocattr(const char *lsm, const char *name, void *value,
1991 size_t size)
1992{
1993 struct security_hook_list *hp;
1994
1995 hlist_for_each_entry(hp, &security_hook_heads.setprocattr, list) {
1996 if (lsm != NULL && strcmp(lsm, hp->lsm))
1997 continue;
1998 return hp->hook.setprocattr(name, value, size);
1999 }
2000 return LSM_RET_DEFAULT(setprocattr);
2001}
2002
2003int security_netlink_send(struct sock *sk, struct sk_buff *skb)
2004{
2005 return call_int_hook(netlink_send, 0, sk, skb);
2006}
2007
2008int security_ismaclabel(const char *name)
2009{
2010 return call_int_hook(ismaclabel, 0, name);
2011}
2012EXPORT_SYMBOL(security_ismaclabel);
2013
2014int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
2015{
2016 struct security_hook_list *hp;
2017 int rc;
2018
2019
2020
2021
2022
2023 hlist_for_each_entry(hp, &security_hook_heads.secid_to_secctx, list) {
2024 rc = hp->hook.secid_to_secctx(secid, secdata, seclen);
2025 if (rc != LSM_RET_DEFAULT(secid_to_secctx))
2026 return rc;
2027 }
2028
2029 return LSM_RET_DEFAULT(secid_to_secctx);
2030}
2031EXPORT_SYMBOL(security_secid_to_secctx);
2032
2033int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid)
2034{
2035 *secid = 0;
2036 return call_int_hook(secctx_to_secid, 0, secdata, seclen, secid);
2037}
2038EXPORT_SYMBOL(security_secctx_to_secid);
2039
2040void security_release_secctx(char *secdata, u32 seclen)
2041{
2042 call_void_hook(release_secctx, secdata, seclen);
2043}
2044EXPORT_SYMBOL(security_release_secctx);
2045
2046void security_inode_invalidate_secctx(struct inode *inode)
2047{
2048 call_void_hook(inode_invalidate_secctx, inode);
2049}
2050EXPORT_SYMBOL(security_inode_invalidate_secctx);
2051
2052int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
2053{
2054 return call_int_hook(inode_notifysecctx, 0, inode, ctx, ctxlen);
2055}
2056EXPORT_SYMBOL(security_inode_notifysecctx);
2057
2058int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
2059{
2060 return call_int_hook(inode_setsecctx, 0, dentry, ctx, ctxlen);
2061}
2062EXPORT_SYMBOL(security_inode_setsecctx);
2063
2064int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen)
2065{
2066 return call_int_hook(inode_getsecctx, -EOPNOTSUPP, inode, ctx, ctxlen);
2067}
2068EXPORT_SYMBOL(security_inode_getsecctx);
2069
2070#ifdef CONFIG_WATCH_QUEUE
2071int security_post_notification(const struct cred *w_cred,
2072 const struct cred *cred,
2073 struct watch_notification *n)
2074{
2075 return call_int_hook(post_notification, 0, w_cred, cred, n);
2076}
2077#endif
2078
2079#ifdef CONFIG_KEY_NOTIFICATIONS
2080int security_watch_key(struct key *key)
2081{
2082 return call_int_hook(watch_key, 0, key);
2083}
2084#endif
2085
2086#ifdef CONFIG_SECURITY_NETWORK
2087
2088int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk)
2089{
2090 return call_int_hook(unix_stream_connect, 0, sock, other, newsk);
2091}
2092EXPORT_SYMBOL(security_unix_stream_connect);
2093
2094int security_unix_may_send(struct socket *sock, struct socket *other)
2095{
2096 return call_int_hook(unix_may_send, 0, sock, other);
2097}
2098EXPORT_SYMBOL(security_unix_may_send);
2099
2100int security_socket_create(int family, int type, int protocol, int kern)
2101{
2102 return call_int_hook(socket_create, 0, family, type, protocol, kern);
2103}
2104
2105int security_socket_post_create(struct socket *sock, int family,
2106 int type, int protocol, int kern)
2107{
2108 return call_int_hook(socket_post_create, 0, sock, family, type,
2109 protocol, kern);
2110}
2111
2112int security_socket_socketpair(struct socket *socka, struct socket *sockb)
2113{
2114 return call_int_hook(socket_socketpair, 0, socka, sockb);
2115}
2116EXPORT_SYMBOL(security_socket_socketpair);
2117
2118int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen)
2119{
2120 return call_int_hook(socket_bind, 0, sock, address, addrlen);
2121}
2122
2123int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen)
2124{
2125 return call_int_hook(socket_connect, 0, sock, address, addrlen);
2126}
2127
2128int security_socket_listen(struct socket *sock, int backlog)
2129{
2130 return call_int_hook(socket_listen, 0, sock, backlog);
2131}
2132
2133int security_socket_accept(struct socket *sock, struct socket *newsock)
2134{
2135 return call_int_hook(socket_accept, 0, sock, newsock);
2136}
2137
2138int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size)
2139{
2140 return call_int_hook(socket_sendmsg, 0, sock, msg, size);
2141}
2142
2143int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
2144 int size, int flags)
2145{
2146 return call_int_hook(socket_recvmsg, 0, sock, msg, size, flags);
2147}
2148
2149int security_socket_getsockname(struct socket *sock)
2150{
2151 return call_int_hook(socket_getsockname, 0, sock);
2152}
2153
2154int security_socket_getpeername(struct socket *sock)
2155{
2156 return call_int_hook(socket_getpeername, 0, sock);
2157}
2158
2159int security_socket_getsockopt(struct socket *sock, int level, int optname)
2160{
2161 return call_int_hook(socket_getsockopt, 0, sock, level, optname);
2162}
2163
2164int security_socket_setsockopt(struct socket *sock, int level, int optname)
2165{
2166 return call_int_hook(socket_setsockopt, 0, sock, level, optname);
2167}
2168
2169int security_socket_shutdown(struct socket *sock, int how)
2170{
2171 return call_int_hook(socket_shutdown, 0, sock, how);
2172}
2173
2174int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb)
2175{
2176 return call_int_hook(socket_sock_rcv_skb, 0, sk, skb);
2177}
2178EXPORT_SYMBOL(security_sock_rcv_skb);
2179
2180int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
2181 int __user *optlen, unsigned len)
2182{
2183 return call_int_hook(socket_getpeersec_stream, -ENOPROTOOPT, sock,
2184 optval, optlen, len);
2185}
2186
2187int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
2188{
2189 return call_int_hook(socket_getpeersec_dgram, -ENOPROTOOPT, sock,
2190 skb, secid);
2191}
2192EXPORT_SYMBOL(security_socket_getpeersec_dgram);
2193
2194int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
2195{
2196 return call_int_hook(sk_alloc_security, 0, sk, family, priority);
2197}
2198
2199void security_sk_free(struct sock *sk)
2200{
2201 call_void_hook(sk_free_security, sk);
2202}
2203
2204void security_sk_clone(const struct sock *sk, struct sock *newsk)
2205{
2206 call_void_hook(sk_clone_security, sk, newsk);
2207}
2208EXPORT_SYMBOL(security_sk_clone);
2209
2210void security_sk_classify_flow(struct sock *sk, struct flowi *fl)
2211{
2212 call_void_hook(sk_getsecid, sk, &fl->flowi_secid);
2213}
2214EXPORT_SYMBOL(security_sk_classify_flow);
2215
2216void security_req_classify_flow(const struct request_sock *req, struct flowi *fl)
2217{
2218 call_void_hook(req_classify_flow, req, fl);
2219}
2220EXPORT_SYMBOL(security_req_classify_flow);
2221
2222void security_sock_graft(struct sock *sk, struct socket *parent)
2223{
2224 call_void_hook(sock_graft, sk, parent);
2225}
2226EXPORT_SYMBOL(security_sock_graft);
2227
2228int security_inet_conn_request(struct sock *sk,
2229 struct sk_buff *skb, struct request_sock *req)
2230{
2231 return call_int_hook(inet_conn_request, 0, sk, skb, req);
2232}
2233EXPORT_SYMBOL(security_inet_conn_request);
2234
2235void security_inet_csk_clone(struct sock *newsk,
2236 const struct request_sock *req)
2237{
2238 call_void_hook(inet_csk_clone, newsk, req);
2239}
2240
2241void security_inet_conn_established(struct sock *sk,
2242 struct sk_buff *skb)
2243{
2244 call_void_hook(inet_conn_established, sk, skb);
2245}
2246EXPORT_SYMBOL(security_inet_conn_established);
2247
2248int security_secmark_relabel_packet(u32 secid)
2249{
2250 return call_int_hook(secmark_relabel_packet, 0, secid);
2251}
2252EXPORT_SYMBOL(security_secmark_relabel_packet);
2253
2254void security_secmark_refcount_inc(void)
2255{
2256 call_void_hook(secmark_refcount_inc);
2257}
2258EXPORT_SYMBOL(security_secmark_refcount_inc);
2259
2260void security_secmark_refcount_dec(void)
2261{
2262 call_void_hook(secmark_refcount_dec);
2263}
2264EXPORT_SYMBOL(security_secmark_refcount_dec);
2265
2266int security_tun_dev_alloc_security(void **security)
2267{
2268 return call_int_hook(tun_dev_alloc_security, 0, security);
2269}
2270EXPORT_SYMBOL(security_tun_dev_alloc_security);
2271
2272void security_tun_dev_free_security(void *security)
2273{
2274 call_void_hook(tun_dev_free_security, security);
2275}
2276EXPORT_SYMBOL(security_tun_dev_free_security);
2277
2278int security_tun_dev_create(void)
2279{
2280 return call_int_hook(tun_dev_create, 0);
2281}
2282EXPORT_SYMBOL(security_tun_dev_create);
2283
2284int security_tun_dev_attach_queue(void *security)
2285{
2286 return call_int_hook(tun_dev_attach_queue, 0, security);
2287}
2288EXPORT_SYMBOL(security_tun_dev_attach_queue);
2289
2290int security_tun_dev_attach(struct sock *sk, void *security)
2291{
2292 return call_int_hook(tun_dev_attach, 0, sk, security);
2293}
2294EXPORT_SYMBOL(security_tun_dev_attach);
2295
2296int security_tun_dev_open(void *security)
2297{
2298 return call_int_hook(tun_dev_open, 0, security);
2299}
2300EXPORT_SYMBOL(security_tun_dev_open);
2301
2302int security_sctp_assoc_request(struct sctp_endpoint *ep, struct sk_buff *skb)
2303{
2304 return call_int_hook(sctp_assoc_request, 0, ep, skb);
2305}
2306EXPORT_SYMBOL(security_sctp_assoc_request);
2307
2308int security_sctp_bind_connect(struct sock *sk, int optname,
2309 struct sockaddr *address, int addrlen)
2310{
2311 return call_int_hook(sctp_bind_connect, 0, sk, optname,
2312 address, addrlen);
2313}
2314EXPORT_SYMBOL(security_sctp_bind_connect);
2315
2316void security_sctp_sk_clone(struct sctp_endpoint *ep, struct sock *sk,
2317 struct sock *newsk)
2318{
2319 call_void_hook(sctp_sk_clone, ep, sk, newsk);
2320}
2321EXPORT_SYMBOL(security_sctp_sk_clone);
2322
2323#endif
2324
2325#ifdef CONFIG_SECURITY_INFINIBAND
2326
2327int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey)
2328{
2329 return call_int_hook(ib_pkey_access, 0, sec, subnet_prefix, pkey);
2330}
2331EXPORT_SYMBOL(security_ib_pkey_access);
2332
2333int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num)
2334{
2335 return call_int_hook(ib_endport_manage_subnet, 0, sec, dev_name, port_num);
2336}
2337EXPORT_SYMBOL(security_ib_endport_manage_subnet);
2338
2339int security_ib_alloc_security(void **sec)
2340{
2341 return call_int_hook(ib_alloc_security, 0, sec);
2342}
2343EXPORT_SYMBOL(security_ib_alloc_security);
2344
2345void security_ib_free_security(void *sec)
2346{
2347 call_void_hook(ib_free_security, sec);
2348}
2349EXPORT_SYMBOL(security_ib_free_security);
2350#endif
2351
2352#ifdef CONFIG_SECURITY_NETWORK_XFRM
2353
2354int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp,
2355 struct xfrm_user_sec_ctx *sec_ctx,
2356 gfp_t gfp)
2357{
2358 return call_int_hook(xfrm_policy_alloc_security, 0, ctxp, sec_ctx, gfp);
2359}
2360EXPORT_SYMBOL(security_xfrm_policy_alloc);
2361
2362int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx,
2363 struct xfrm_sec_ctx **new_ctxp)
2364{
2365 return call_int_hook(xfrm_policy_clone_security, 0, old_ctx, new_ctxp);
2366}
2367
2368void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
2369{
2370 call_void_hook(xfrm_policy_free_security, ctx);
2371}
2372EXPORT_SYMBOL(security_xfrm_policy_free);
2373
2374int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
2375{
2376 return call_int_hook(xfrm_policy_delete_security, 0, ctx);
2377}
2378
2379int security_xfrm_state_alloc(struct xfrm_state *x,
2380 struct xfrm_user_sec_ctx *sec_ctx)
2381{
2382 return call_int_hook(xfrm_state_alloc, 0, x, sec_ctx);
2383}
2384EXPORT_SYMBOL(security_xfrm_state_alloc);
2385
2386int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
2387 struct xfrm_sec_ctx *polsec, u32 secid)
2388{
2389 return call_int_hook(xfrm_state_alloc_acquire, 0, x, polsec, secid);
2390}
2391
2392int security_xfrm_state_delete(struct xfrm_state *x)
2393{
2394 return call_int_hook(xfrm_state_delete_security, 0, x);
2395}
2396EXPORT_SYMBOL(security_xfrm_state_delete);
2397
2398void security_xfrm_state_free(struct xfrm_state *x)
2399{
2400 call_void_hook(xfrm_state_free_security, x);
2401}
2402
2403int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
2404{
2405 return call_int_hook(xfrm_policy_lookup, 0, ctx, fl_secid, dir);
2406}
2407
2408int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
2409 struct xfrm_policy *xp,
2410 const struct flowi *fl)
2411{
2412 struct security_hook_list *hp;
2413 int rc = LSM_RET_DEFAULT(xfrm_state_pol_flow_match);
2414
2415
2416
2417
2418
2419
2420
2421
2422
2423
2424 hlist_for_each_entry(hp, &security_hook_heads.xfrm_state_pol_flow_match,
2425 list) {
2426 rc = hp->hook.xfrm_state_pol_flow_match(x, xp, fl);
2427 break;
2428 }
2429 return rc;
2430}
2431
2432int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
2433{
2434 return call_int_hook(xfrm_decode_session, 0, skb, secid, 1);
2435}
2436
2437void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl)
2438{
2439 int rc = call_int_hook(xfrm_decode_session, 0, skb, &fl->flowi_secid,
2440 0);
2441
2442 BUG_ON(rc);
2443}
2444EXPORT_SYMBOL(security_skb_classify_flow);
2445
2446#endif
2447
2448#ifdef CONFIG_KEYS
2449
2450int security_key_alloc(struct key *key, const struct cred *cred,
2451 unsigned long flags)
2452{
2453 return call_int_hook(key_alloc, 0, key, cred, flags);
2454}
2455
2456void security_key_free(struct key *key)
2457{
2458 call_void_hook(key_free, key);
2459}
2460
2461int security_key_permission(key_ref_t key_ref, const struct cred *cred,
2462 enum key_need_perm need_perm)
2463{
2464 return call_int_hook(key_permission, 0, key_ref, cred, need_perm);
2465}
2466
2467int security_key_getsecurity(struct key *key, char **_buffer)
2468{
2469 *_buffer = NULL;
2470 return call_int_hook(key_getsecurity, 0, key, _buffer);
2471}
2472
2473#endif
2474
2475#ifdef CONFIG_AUDIT
2476
2477int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule)
2478{
2479 return call_int_hook(audit_rule_init, 0, field, op, rulestr, lsmrule);
2480}
2481
2482int security_audit_rule_known(struct audit_krule *krule)
2483{
2484 return call_int_hook(audit_rule_known, 0, krule);
2485}
2486
2487void security_audit_rule_free(void *lsmrule)
2488{
2489 call_void_hook(audit_rule_free, lsmrule);
2490}
2491
2492int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule)
2493{
2494 return call_int_hook(audit_rule_match, 0, secid, field, op, lsmrule);
2495}
2496#endif
2497
2498#ifdef CONFIG_BPF_SYSCALL
2499int security_bpf(int cmd, union bpf_attr *attr, unsigned int size)
2500{
2501 return call_int_hook(bpf, 0, cmd, attr, size);
2502}
2503int security_bpf_map(struct bpf_map *map, fmode_t fmode)
2504{
2505 return call_int_hook(bpf_map, 0, map, fmode);
2506}
2507int security_bpf_prog(struct bpf_prog *prog)
2508{
2509 return call_int_hook(bpf_prog, 0, prog);
2510}
2511int security_bpf_map_alloc(struct bpf_map *map)
2512{
2513 return call_int_hook(bpf_map_alloc_security, 0, map);
2514}
2515int security_bpf_prog_alloc(struct bpf_prog_aux *aux)
2516{
2517 return call_int_hook(bpf_prog_alloc_security, 0, aux);
2518}
2519void security_bpf_map_free(struct bpf_map *map)
2520{
2521 call_void_hook(bpf_map_free_security, map);
2522}
2523void security_bpf_prog_free(struct bpf_prog_aux *aux)
2524{
2525 call_void_hook(bpf_prog_free_security, aux);
2526}
2527#endif
2528
2529int security_locked_down(enum lockdown_reason what)
2530{
2531 return call_int_hook(locked_down, 0, what);
2532}
2533EXPORT_SYMBOL(security_locked_down);
2534
2535#ifdef CONFIG_PERF_EVENTS
2536int security_perf_event_open(struct perf_event_attr *attr, int type)
2537{
2538 return call_int_hook(perf_event_open, 0, attr, type);
2539}
2540
2541int security_perf_event_alloc(struct perf_event *event)
2542{
2543 return call_int_hook(perf_event_alloc, 0, event);
2544}
2545
2546void security_perf_event_free(struct perf_event *event)
2547{
2548 call_void_hook(perf_event_free, event);
2549}
2550
2551int security_perf_event_read(struct perf_event *event)
2552{
2553 return call_int_hook(perf_event_read, 0, event);
2554}
2555
2556int security_perf_event_write(struct perf_event *event)
2557{
2558 return call_int_hook(perf_event_write, 0, event);
2559}
2560#endif
2561