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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_BPF_WRITE_USER] = "use of bpf to write user RAM",
62 [LOCKDOWN_INTEGRITY_MAX] = "integrity",
63 [LOCKDOWN_KCORE] = "/proc/kcore access",
64 [LOCKDOWN_KPROBES] = "use of kprobes",
65 [LOCKDOWN_BPF_READ_KERNEL] = "use of bpf to read kernel RAM",
66 [LOCKDOWN_PERF] = "unsafe use of perf",
67 [LOCKDOWN_TRACEFS] = "use of tracefs",
68 [LOCKDOWN_XMON_RW] = "xmon read and write access",
69 [LOCKDOWN_XFRM_SECRET] = "xfrm SA secret",
70 [LOCKDOWN_CONFIDENTIALITY_MAX] = "confidentiality",
71};
72
73struct security_hook_heads security_hook_heads __lsm_ro_after_init;
74static BLOCKING_NOTIFIER_HEAD(blocking_lsm_notifier_chain);
75
76static struct kmem_cache *lsm_file_cache;
77static struct kmem_cache *lsm_inode_cache;
78
79char *lsm_names;
80static struct lsm_blob_sizes blob_sizes __lsm_ro_after_init;
81
82
83static __initdata const char *chosen_lsm_order;
84static __initdata const char *chosen_major_lsm;
85
86static __initconst const char * const builtin_lsm_order = CONFIG_LSM;
87
88
89static __initdata struct lsm_info **ordered_lsms;
90static __initdata struct lsm_info *exclusive;
91
92static __initdata bool debug;
93#define init_debug(...) \
94 do { \
95 if (debug) \
96 pr_info(__VA_ARGS__); \
97 } while (0)
98
99static bool __init is_enabled(struct lsm_info *lsm)
100{
101 if (!lsm->enabled)
102 return false;
103
104 return *lsm->enabled;
105}
106
107
108static int lsm_enabled_true __initdata = 1;
109static int lsm_enabled_false __initdata = 0;
110static void __init set_enabled(struct lsm_info *lsm, bool enabled)
111{
112
113
114
115
116 if (!lsm->enabled) {
117 if (enabled)
118 lsm->enabled = &lsm_enabled_true;
119 else
120 lsm->enabled = &lsm_enabled_false;
121 } else if (lsm->enabled == &lsm_enabled_true) {
122 if (!enabled)
123 lsm->enabled = &lsm_enabled_false;
124 } else if (lsm->enabled == &lsm_enabled_false) {
125 if (enabled)
126 lsm->enabled = &lsm_enabled_true;
127 } else {
128 *lsm->enabled = enabled;
129 }
130}
131
132
133static bool __init exists_ordered_lsm(struct lsm_info *lsm)
134{
135 struct lsm_info **check;
136
137 for (check = ordered_lsms; *check; check++)
138 if (*check == lsm)
139 return true;
140
141 return false;
142}
143
144
145static int last_lsm __initdata;
146static void __init append_ordered_lsm(struct lsm_info *lsm, const char *from)
147{
148
149 if (exists_ordered_lsm(lsm))
150 return;
151
152 if (WARN(last_lsm == LSM_COUNT, "%s: out of LSM slots!?\n", from))
153 return;
154
155
156 if (!lsm->enabled)
157 lsm->enabled = &lsm_enabled_true;
158 ordered_lsms[last_lsm++] = lsm;
159
160 init_debug("%s ordering: %s (%sabled)\n", from, lsm->name,
161 is_enabled(lsm) ? "en" : "dis");
162}
163
164
165static bool __init lsm_allowed(struct lsm_info *lsm)
166{
167
168 if (!is_enabled(lsm))
169 return false;
170
171
172 if ((lsm->flags & LSM_FLAG_EXCLUSIVE) && exclusive) {
173 init_debug("exclusive disabled: %s\n", lsm->name);
174 return false;
175 }
176
177 return true;
178}
179
180static void __init lsm_set_blob_size(int *need, int *lbs)
181{
182 int offset;
183
184 if (*need > 0) {
185 offset = *lbs;
186 *lbs += *need;
187 *need = offset;
188 }
189}
190
191static void __init lsm_set_blob_sizes(struct lsm_blob_sizes *needed)
192{
193 if (!needed)
194 return;
195
196 lsm_set_blob_size(&needed->lbs_cred, &blob_sizes.lbs_cred);
197 lsm_set_blob_size(&needed->lbs_file, &blob_sizes.lbs_file);
198
199
200
201
202 if (needed->lbs_inode && blob_sizes.lbs_inode == 0)
203 blob_sizes.lbs_inode = sizeof(struct rcu_head);
204 lsm_set_blob_size(&needed->lbs_inode, &blob_sizes.lbs_inode);
205 lsm_set_blob_size(&needed->lbs_ipc, &blob_sizes.lbs_ipc);
206 lsm_set_blob_size(&needed->lbs_msg_msg, &blob_sizes.lbs_msg_msg);
207 lsm_set_blob_size(&needed->lbs_superblock, &blob_sizes.lbs_superblock);
208 lsm_set_blob_size(&needed->lbs_task, &blob_sizes.lbs_task);
209}
210
211
212static void __init prepare_lsm(struct lsm_info *lsm)
213{
214 int enabled = lsm_allowed(lsm);
215
216
217 set_enabled(lsm, enabled);
218
219
220 if (enabled) {
221 if ((lsm->flags & LSM_FLAG_EXCLUSIVE) && !exclusive) {
222 exclusive = lsm;
223 init_debug("exclusive chosen: %s\n", lsm->name);
224 }
225
226 lsm_set_blob_sizes(lsm->blobs);
227 }
228}
229
230
231static void __init initialize_lsm(struct lsm_info *lsm)
232{
233 if (is_enabled(lsm)) {
234 int ret;
235
236 init_debug("initializing %s\n", lsm->name);
237 ret = lsm->init();
238 WARN(ret, "%s failed to initialize: %d\n", lsm->name, ret);
239 }
240}
241
242
243static void __init ordered_lsm_parse(const char *order, const char *origin)
244{
245 struct lsm_info *lsm;
246 char *sep, *name, *next;
247
248
249 for (lsm = __start_lsm_info; lsm < __end_lsm_info; lsm++) {
250 if (lsm->order == LSM_ORDER_FIRST)
251 append_ordered_lsm(lsm, "first");
252 }
253
254
255 if (chosen_major_lsm) {
256 struct lsm_info *major;
257
258
259
260
261
262
263
264 for (major = __start_lsm_info; major < __end_lsm_info;
265 major++) {
266 if ((major->flags & LSM_FLAG_LEGACY_MAJOR) &&
267 strcmp(major->name, chosen_major_lsm) != 0) {
268 set_enabled(major, false);
269 init_debug("security=%s disabled: %s\n",
270 chosen_major_lsm, major->name);
271 }
272 }
273 }
274
275 sep = kstrdup(order, GFP_KERNEL);
276 next = sep;
277
278 while ((name = strsep(&next, ",")) != NULL) {
279 bool found = false;
280
281 for (lsm = __start_lsm_info; lsm < __end_lsm_info; lsm++) {
282 if (lsm->order == LSM_ORDER_MUTABLE &&
283 strcmp(lsm->name, name) == 0) {
284 append_ordered_lsm(lsm, origin);
285 found = true;
286 }
287 }
288
289 if (!found)
290 init_debug("%s ignored: %s\n", origin, name);
291 }
292
293
294 if (chosen_major_lsm) {
295 for (lsm = __start_lsm_info; lsm < __end_lsm_info; lsm++) {
296 if (exists_ordered_lsm(lsm))
297 continue;
298 if (strcmp(lsm->name, chosen_major_lsm) == 0)
299 append_ordered_lsm(lsm, "security=");
300 }
301 }
302
303
304 for (lsm = __start_lsm_info; lsm < __end_lsm_info; lsm++) {
305 if (exists_ordered_lsm(lsm))
306 continue;
307 set_enabled(lsm, false);
308 init_debug("%s disabled: %s\n", origin, lsm->name);
309 }
310
311 kfree(sep);
312}
313
314static void __init lsm_early_cred(struct cred *cred);
315static void __init lsm_early_task(struct task_struct *task);
316
317static int lsm_append(const char *new, char **result);
318
319static void __init ordered_lsm_init(void)
320{
321 struct lsm_info **lsm;
322
323 ordered_lsms = kcalloc(LSM_COUNT + 1, sizeof(*ordered_lsms),
324 GFP_KERNEL);
325
326 if (chosen_lsm_order) {
327 if (chosen_major_lsm) {
328 pr_info("security= is ignored because it is superseded by lsm=\n");
329 chosen_major_lsm = NULL;
330 }
331 ordered_lsm_parse(chosen_lsm_order, "cmdline");
332 } else
333 ordered_lsm_parse(builtin_lsm_order, "builtin");
334
335 for (lsm = ordered_lsms; *lsm; lsm++)
336 prepare_lsm(*lsm);
337
338 init_debug("cred blob size = %d\n", blob_sizes.lbs_cred);
339 init_debug("file blob size = %d\n", blob_sizes.lbs_file);
340 init_debug("inode blob size = %d\n", blob_sizes.lbs_inode);
341 init_debug("ipc blob size = %d\n", blob_sizes.lbs_ipc);
342 init_debug("msg_msg blob size = %d\n", blob_sizes.lbs_msg_msg);
343 init_debug("superblock blob size = %d\n", blob_sizes.lbs_superblock);
344 init_debug("task blob size = %d\n", blob_sizes.lbs_task);
345
346
347
348
349 if (blob_sizes.lbs_file)
350 lsm_file_cache = kmem_cache_create("lsm_file_cache",
351 blob_sizes.lbs_file, 0,
352 SLAB_PANIC, NULL);
353 if (blob_sizes.lbs_inode)
354 lsm_inode_cache = kmem_cache_create("lsm_inode_cache",
355 blob_sizes.lbs_inode, 0,
356 SLAB_PANIC, NULL);
357
358 lsm_early_cred((struct cred *) current->cred);
359 lsm_early_task(current);
360 for (lsm = ordered_lsms; *lsm; lsm++)
361 initialize_lsm(*lsm);
362
363 kfree(ordered_lsms);
364}
365
366int __init early_security_init(void)
367{
368 int i;
369 struct hlist_head *list = (struct hlist_head *) &security_hook_heads;
370 struct lsm_info *lsm;
371
372 for (i = 0; i < sizeof(security_hook_heads) / sizeof(struct hlist_head);
373 i++)
374 INIT_HLIST_HEAD(&list[i]);
375
376 for (lsm = __start_early_lsm_info; lsm < __end_early_lsm_info; lsm++) {
377 if (!lsm->enabled)
378 lsm->enabled = &lsm_enabled_true;
379 prepare_lsm(lsm);
380 initialize_lsm(lsm);
381 }
382
383 return 0;
384}
385
386
387
388
389
390
391int __init security_init(void)
392{
393 struct lsm_info *lsm;
394
395 pr_info("Security Framework initializing\n");
396
397
398
399
400
401 for (lsm = __start_early_lsm_info; lsm < __end_early_lsm_info; lsm++) {
402 if (lsm->enabled)
403 lsm_append(lsm->name, &lsm_names);
404 }
405
406
407 ordered_lsm_init();
408
409 return 0;
410}
411
412
413static int __init choose_major_lsm(char *str)
414{
415 chosen_major_lsm = str;
416 return 1;
417}
418__setup("security=", choose_major_lsm);
419
420
421static int __init choose_lsm_order(char *str)
422{
423 chosen_lsm_order = str;
424 return 1;
425}
426__setup("lsm=", choose_lsm_order);
427
428
429static int __init enable_debug(char *str)
430{
431 debug = true;
432 return 1;
433}
434__setup("lsm.debug", enable_debug);
435
436static bool match_last_lsm(const char *list, const char *lsm)
437{
438 const char *last;
439
440 if (WARN_ON(!list || !lsm))
441 return false;
442 last = strrchr(list, ',');
443 if (last)
444
445 last++;
446 else
447 last = list;
448 return !strcmp(last, lsm);
449}
450
451static int lsm_append(const char *new, char **result)
452{
453 char *cp;
454
455 if (*result == NULL) {
456 *result = kstrdup(new, GFP_KERNEL);
457 if (*result == NULL)
458 return -ENOMEM;
459 } else {
460
461 if (match_last_lsm(*result, new))
462 return 0;
463 cp = kasprintf(GFP_KERNEL, "%s,%s", *result, new);
464 if (cp == NULL)
465 return -ENOMEM;
466 kfree(*result);
467 *result = cp;
468 }
469 return 0;
470}
471
472
473
474
475
476
477
478
479
480void __init security_add_hooks(struct security_hook_list *hooks, int count,
481 char *lsm)
482{
483 int i;
484
485 for (i = 0; i < count; i++) {
486 hooks[i].lsm = lsm;
487 hlist_add_tail_rcu(&hooks[i].list, hooks[i].head);
488 }
489
490
491
492
493
494 if (slab_is_available()) {
495 if (lsm_append(lsm, &lsm_names) < 0)
496 panic("%s - Cannot get early memory.\n", __func__);
497 }
498}
499
500int call_blocking_lsm_notifier(enum lsm_event event, void *data)
501{
502 return blocking_notifier_call_chain(&blocking_lsm_notifier_chain,
503 event, data);
504}
505EXPORT_SYMBOL(call_blocking_lsm_notifier);
506
507int register_blocking_lsm_notifier(struct notifier_block *nb)
508{
509 return blocking_notifier_chain_register(&blocking_lsm_notifier_chain,
510 nb);
511}
512EXPORT_SYMBOL(register_blocking_lsm_notifier);
513
514int unregister_blocking_lsm_notifier(struct notifier_block *nb)
515{
516 return blocking_notifier_chain_unregister(&blocking_lsm_notifier_chain,
517 nb);
518}
519EXPORT_SYMBOL(unregister_blocking_lsm_notifier);
520
521
522
523
524
525
526
527
528
529
530static int lsm_cred_alloc(struct cred *cred, gfp_t gfp)
531{
532 if (blob_sizes.lbs_cred == 0) {
533 cred->security = NULL;
534 return 0;
535 }
536
537 cred->security = kzalloc(blob_sizes.lbs_cred, gfp);
538 if (cred->security == NULL)
539 return -ENOMEM;
540 return 0;
541}
542
543
544
545
546
547
548
549static void __init lsm_early_cred(struct cred *cred)
550{
551 int rc = lsm_cred_alloc(cred, GFP_KERNEL);
552
553 if (rc)
554 panic("%s: Early cred alloc failed.\n", __func__);
555}
556
557
558
559
560
561
562
563
564
565static int lsm_file_alloc(struct file *file)
566{
567 if (!lsm_file_cache) {
568 file->f_security = NULL;
569 return 0;
570 }
571
572 file->f_security = kmem_cache_zalloc(lsm_file_cache, GFP_KERNEL);
573 if (file->f_security == NULL)
574 return -ENOMEM;
575 return 0;
576}
577
578
579
580
581
582
583
584
585
586int lsm_inode_alloc(struct inode *inode)
587{
588 if (!lsm_inode_cache) {
589 inode->i_security = NULL;
590 return 0;
591 }
592
593 inode->i_security = kmem_cache_zalloc(lsm_inode_cache, GFP_NOFS);
594 if (inode->i_security == NULL)
595 return -ENOMEM;
596 return 0;
597}
598
599
600
601
602
603
604
605
606
607static int lsm_task_alloc(struct task_struct *task)
608{
609 if (blob_sizes.lbs_task == 0) {
610 task->security = NULL;
611 return 0;
612 }
613
614 task->security = kzalloc(blob_sizes.lbs_task, GFP_KERNEL);
615 if (task->security == NULL)
616 return -ENOMEM;
617 return 0;
618}
619
620
621
622
623
624
625
626
627
628static int lsm_ipc_alloc(struct kern_ipc_perm *kip)
629{
630 if (blob_sizes.lbs_ipc == 0) {
631 kip->security = NULL;
632 return 0;
633 }
634
635 kip->security = kzalloc(blob_sizes.lbs_ipc, GFP_KERNEL);
636 if (kip->security == NULL)
637 return -ENOMEM;
638 return 0;
639}
640
641
642
643
644
645
646
647
648
649static int lsm_msg_msg_alloc(struct msg_msg *mp)
650{
651 if (blob_sizes.lbs_msg_msg == 0) {
652 mp->security = NULL;
653 return 0;
654 }
655
656 mp->security = kzalloc(blob_sizes.lbs_msg_msg, GFP_KERNEL);
657 if (mp->security == NULL)
658 return -ENOMEM;
659 return 0;
660}
661
662
663
664
665
666
667
668static void __init lsm_early_task(struct task_struct *task)
669{
670 int rc = lsm_task_alloc(task);
671
672 if (rc)
673 panic("%s: Early task alloc failed.\n", __func__);
674}
675
676
677
678
679
680
681
682
683
684static int lsm_superblock_alloc(struct super_block *sb)
685{
686 if (blob_sizes.lbs_superblock == 0) {
687 sb->s_security = NULL;
688 return 0;
689 }
690
691 sb->s_security = kzalloc(blob_sizes.lbs_superblock, GFP_KERNEL);
692 if (sb->s_security == NULL)
693 return -ENOMEM;
694 return 0;
695}
696
697
698
699
700
701
702
703
704
705
706#define LSM_RET_DEFAULT(NAME) (NAME##_default)
707#define DECLARE_LSM_RET_DEFAULT_void(DEFAULT, NAME)
708#define DECLARE_LSM_RET_DEFAULT_int(DEFAULT, NAME) \
709 static const int __maybe_unused LSM_RET_DEFAULT(NAME) = (DEFAULT);
710#define LSM_HOOK(RET, DEFAULT, NAME, ...) \
711 DECLARE_LSM_RET_DEFAULT_##RET(DEFAULT, NAME)
712
713#include <linux/lsm_hook_defs.h>
714#undef LSM_HOOK
715
716
717
718
719
720
721
722
723
724
725
726#define call_void_hook(FUNC, ...) \
727 do { \
728 struct security_hook_list *P; \
729 \
730 hlist_for_each_entry(P, &security_hook_heads.FUNC, list) \
731 P->hook.FUNC(__VA_ARGS__); \
732 } while (0)
733
734#define call_int_hook(FUNC, IRC, ...) ({ \
735 int RC = IRC; \
736 do { \
737 struct security_hook_list *P; \
738 \
739 hlist_for_each_entry(P, &security_hook_heads.FUNC, list) { \
740 RC = P->hook.FUNC(__VA_ARGS__); \
741 if (RC != 0) \
742 break; \
743 } \
744 } while (0); \
745 RC; \
746})
747
748
749
750int security_binder_set_context_mgr(const struct cred *mgr)
751{
752 return call_int_hook(binder_set_context_mgr, 0, mgr);
753}
754
755int security_binder_transaction(const struct cred *from,
756 const struct cred *to)
757{
758 return call_int_hook(binder_transaction, 0, from, to);
759}
760
761int security_binder_transfer_binder(const struct cred *from,
762 const struct cred *to)
763{
764 return call_int_hook(binder_transfer_binder, 0, from, to);
765}
766
767int security_binder_transfer_file(const struct cred *from,
768 const struct cred *to, struct file *file)
769{
770 return call_int_hook(binder_transfer_file, 0, from, to, file);
771}
772
773int security_ptrace_access_check(struct task_struct *child, unsigned int mode)
774{
775 return call_int_hook(ptrace_access_check, 0, child, mode);
776}
777
778int security_ptrace_traceme(struct task_struct *parent)
779{
780 return call_int_hook(ptrace_traceme, 0, parent);
781}
782
783int security_capget(struct task_struct *target,
784 kernel_cap_t *effective,
785 kernel_cap_t *inheritable,
786 kernel_cap_t *permitted)
787{
788 return call_int_hook(capget, 0, target,
789 effective, inheritable, permitted);
790}
791
792int security_capset(struct cred *new, const struct cred *old,
793 const kernel_cap_t *effective,
794 const kernel_cap_t *inheritable,
795 const kernel_cap_t *permitted)
796{
797 return call_int_hook(capset, 0, new, old,
798 effective, inheritable, permitted);
799}
800
801int security_capable(const struct cred *cred,
802 struct user_namespace *ns,
803 int cap,
804 unsigned int opts)
805{
806 return call_int_hook(capable, 0, cred, ns, cap, opts);
807}
808
809int security_quotactl(int cmds, int type, int id, struct super_block *sb)
810{
811 return call_int_hook(quotactl, 0, cmds, type, id, sb);
812}
813
814int security_quota_on(struct dentry *dentry)
815{
816 return call_int_hook(quota_on, 0, dentry);
817}
818
819int security_syslog(int type)
820{
821 return call_int_hook(syslog, 0, type);
822}
823
824int security_settime64(const struct timespec64 *ts, const struct timezone *tz)
825{
826 return call_int_hook(settime, 0, ts, tz);
827}
828
829int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
830{
831 struct security_hook_list *hp;
832 int cap_sys_admin = 1;
833 int rc;
834
835
836
837
838
839
840
841
842 hlist_for_each_entry(hp, &security_hook_heads.vm_enough_memory, list) {
843 rc = hp->hook.vm_enough_memory(mm, pages);
844 if (rc <= 0) {
845 cap_sys_admin = 0;
846 break;
847 }
848 }
849 return __vm_enough_memory(mm, pages, cap_sys_admin);
850}
851
852int security_bprm_creds_for_exec(struct linux_binprm *bprm)
853{
854 return call_int_hook(bprm_creds_for_exec, 0, bprm);
855}
856
857int security_bprm_creds_from_file(struct linux_binprm *bprm, struct file *file)
858{
859 return call_int_hook(bprm_creds_from_file, 0, bprm, file);
860}
861
862int security_bprm_check(struct linux_binprm *bprm)
863{
864 int ret;
865
866 ret = call_int_hook(bprm_check_security, 0, bprm);
867 if (ret)
868 return ret;
869 return ima_bprm_check(bprm);
870}
871
872void security_bprm_committing_creds(struct linux_binprm *bprm)
873{
874 call_void_hook(bprm_committing_creds, bprm);
875}
876
877void security_bprm_committed_creds(struct linux_binprm *bprm)
878{
879 call_void_hook(bprm_committed_creds, bprm);
880}
881
882int security_fs_context_dup(struct fs_context *fc, struct fs_context *src_fc)
883{
884 return call_int_hook(fs_context_dup, 0, fc, src_fc);
885}
886
887int security_fs_context_parse_param(struct fs_context *fc, struct fs_parameter *param)
888{
889 return call_int_hook(fs_context_parse_param, -ENOPARAM, fc, param);
890}
891
892int security_sb_alloc(struct super_block *sb)
893{
894 int rc = lsm_superblock_alloc(sb);
895
896 if (unlikely(rc))
897 return rc;
898 rc = call_int_hook(sb_alloc_security, 0, sb);
899 if (unlikely(rc))
900 security_sb_free(sb);
901 return rc;
902}
903
904void security_sb_delete(struct super_block *sb)
905{
906 call_void_hook(sb_delete, sb);
907}
908
909void security_sb_free(struct super_block *sb)
910{
911 call_void_hook(sb_free_security, sb);
912 kfree(sb->s_security);
913 sb->s_security = NULL;
914}
915
916void security_free_mnt_opts(void **mnt_opts)
917{
918 if (!*mnt_opts)
919 return;
920 call_void_hook(sb_free_mnt_opts, *mnt_opts);
921 *mnt_opts = NULL;
922}
923EXPORT_SYMBOL(security_free_mnt_opts);
924
925int security_sb_eat_lsm_opts(char *options, void **mnt_opts)
926{
927 return call_int_hook(sb_eat_lsm_opts, 0, options, mnt_opts);
928}
929EXPORT_SYMBOL(security_sb_eat_lsm_opts);
930
931int security_sb_mnt_opts_compat(struct super_block *sb,
932 void *mnt_opts)
933{
934 return call_int_hook(sb_mnt_opts_compat, 0, sb, mnt_opts);
935}
936EXPORT_SYMBOL(security_sb_mnt_opts_compat);
937
938int security_sb_remount(struct super_block *sb,
939 void *mnt_opts)
940{
941 return call_int_hook(sb_remount, 0, sb, mnt_opts);
942}
943EXPORT_SYMBOL(security_sb_remount);
944
945int security_sb_kern_mount(struct super_block *sb)
946{
947 return call_int_hook(sb_kern_mount, 0, sb);
948}
949
950int security_sb_show_options(struct seq_file *m, struct super_block *sb)
951{
952 return call_int_hook(sb_show_options, 0, m, sb);
953}
954
955int security_sb_statfs(struct dentry *dentry)
956{
957 return call_int_hook(sb_statfs, 0, dentry);
958}
959
960int security_sb_mount(const char *dev_name, const struct path *path,
961 const char *type, unsigned long flags, void *data)
962{
963 return call_int_hook(sb_mount, 0, dev_name, path, type, flags, data);
964}
965
966int security_sb_umount(struct vfsmount *mnt, int flags)
967{
968 return call_int_hook(sb_umount, 0, mnt, flags);
969}
970
971int security_sb_pivotroot(const struct path *old_path, const struct path *new_path)
972{
973 return call_int_hook(sb_pivotroot, 0, old_path, new_path);
974}
975
976int security_sb_set_mnt_opts(struct super_block *sb,
977 void *mnt_opts,
978 unsigned long kern_flags,
979 unsigned long *set_kern_flags)
980{
981 return call_int_hook(sb_set_mnt_opts,
982 mnt_opts ? -EOPNOTSUPP : 0, sb,
983 mnt_opts, kern_flags, set_kern_flags);
984}
985EXPORT_SYMBOL(security_sb_set_mnt_opts);
986
987int security_sb_clone_mnt_opts(const struct super_block *oldsb,
988 struct super_block *newsb,
989 unsigned long kern_flags,
990 unsigned long *set_kern_flags)
991{
992 return call_int_hook(sb_clone_mnt_opts, 0, oldsb, newsb,
993 kern_flags, set_kern_flags);
994}
995EXPORT_SYMBOL(security_sb_clone_mnt_opts);
996
997int security_move_mount(const struct path *from_path, const struct path *to_path)
998{
999 return call_int_hook(move_mount, 0, from_path, to_path);
1000}
1001
1002int security_path_notify(const struct path *path, u64 mask,
1003 unsigned int obj_type)
1004{
1005 return call_int_hook(path_notify, 0, path, mask, obj_type);
1006}
1007
1008int security_inode_alloc(struct inode *inode)
1009{
1010 int rc = lsm_inode_alloc(inode);
1011
1012 if (unlikely(rc))
1013 return rc;
1014 rc = call_int_hook(inode_alloc_security, 0, inode);
1015 if (unlikely(rc))
1016 security_inode_free(inode);
1017 return rc;
1018}
1019
1020static void inode_free_by_rcu(struct rcu_head *head)
1021{
1022
1023
1024
1025 kmem_cache_free(lsm_inode_cache, head);
1026}
1027
1028void security_inode_free(struct inode *inode)
1029{
1030 integrity_inode_free(inode);
1031 call_void_hook(inode_free_security, inode);
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041 if (inode->i_security)
1042 call_rcu((struct rcu_head *)inode->i_security,
1043 inode_free_by_rcu);
1044}
1045
1046int security_dentry_init_security(struct dentry *dentry, int mode,
1047 const struct qstr *name,
1048 const char **xattr_name, void **ctx,
1049 u32 *ctxlen)
1050{
1051 struct security_hook_list *hp;
1052 int rc;
1053
1054
1055
1056
1057 hlist_for_each_entry(hp, &security_hook_heads.dentry_init_security, list) {
1058 rc = hp->hook.dentry_init_security(dentry, mode, name,
1059 xattr_name, ctx, ctxlen);
1060 if (rc != LSM_RET_DEFAULT(dentry_init_security))
1061 return rc;
1062 }
1063 return LSM_RET_DEFAULT(dentry_init_security);
1064}
1065EXPORT_SYMBOL(security_dentry_init_security);
1066
1067int security_dentry_create_files_as(struct dentry *dentry, int mode,
1068 struct qstr *name,
1069 const struct cred *old, struct cred *new)
1070{
1071 return call_int_hook(dentry_create_files_as, 0, dentry, mode,
1072 name, old, new);
1073}
1074EXPORT_SYMBOL(security_dentry_create_files_as);
1075
1076int security_inode_init_security(struct inode *inode, struct inode *dir,
1077 const struct qstr *qstr,
1078 const initxattrs initxattrs, void *fs_data)
1079{
1080 struct xattr new_xattrs[MAX_LSM_EVM_XATTR + 1];
1081 struct xattr *lsm_xattr, *evm_xattr, *xattr;
1082 int ret;
1083
1084 if (unlikely(IS_PRIVATE(inode)))
1085 return 0;
1086
1087 if (!initxattrs)
1088 return call_int_hook(inode_init_security, -EOPNOTSUPP, inode,
1089 dir, qstr, NULL, NULL, NULL);
1090 memset(new_xattrs, 0, sizeof(new_xattrs));
1091 lsm_xattr = new_xattrs;
1092 ret = call_int_hook(inode_init_security, -EOPNOTSUPP, inode, dir, qstr,
1093 &lsm_xattr->name,
1094 &lsm_xattr->value,
1095 &lsm_xattr->value_len);
1096 if (ret)
1097 goto out;
1098
1099 evm_xattr = lsm_xattr + 1;
1100 ret = evm_inode_init_security(inode, lsm_xattr, evm_xattr);
1101 if (ret)
1102 goto out;
1103 ret = initxattrs(inode, new_xattrs, fs_data);
1104out:
1105 for (xattr = new_xattrs; xattr->value != NULL; xattr++)
1106 kfree(xattr->value);
1107 return (ret == -EOPNOTSUPP) ? 0 : ret;
1108}
1109EXPORT_SYMBOL(security_inode_init_security);
1110
1111int security_inode_init_security_anon(struct inode *inode,
1112 const struct qstr *name,
1113 const struct inode *context_inode)
1114{
1115 return call_int_hook(inode_init_security_anon, 0, inode, name,
1116 context_inode);
1117}
1118
1119int security_old_inode_init_security(struct inode *inode, struct inode *dir,
1120 const struct qstr *qstr, const char **name,
1121 void **value, size_t *len)
1122{
1123 if (unlikely(IS_PRIVATE(inode)))
1124 return -EOPNOTSUPP;
1125 return call_int_hook(inode_init_security, -EOPNOTSUPP, inode, dir,
1126 qstr, name, value, len);
1127}
1128EXPORT_SYMBOL(security_old_inode_init_security);
1129
1130#ifdef CONFIG_SECURITY_PATH
1131int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode,
1132 unsigned int dev)
1133{
1134 if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
1135 return 0;
1136 return call_int_hook(path_mknod, 0, dir, dentry, mode, dev);
1137}
1138EXPORT_SYMBOL(security_path_mknod);
1139
1140int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode)
1141{
1142 if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
1143 return 0;
1144 return call_int_hook(path_mkdir, 0, dir, dentry, mode);
1145}
1146EXPORT_SYMBOL(security_path_mkdir);
1147
1148int security_path_rmdir(const struct path *dir, struct dentry *dentry)
1149{
1150 if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
1151 return 0;
1152 return call_int_hook(path_rmdir, 0, dir, dentry);
1153}
1154
1155int security_path_unlink(const struct path *dir, struct dentry *dentry)
1156{
1157 if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
1158 return 0;
1159 return call_int_hook(path_unlink, 0, dir, dentry);
1160}
1161EXPORT_SYMBOL(security_path_unlink);
1162
1163int security_path_symlink(const struct path *dir, struct dentry *dentry,
1164 const char *old_name)
1165{
1166 if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
1167 return 0;
1168 return call_int_hook(path_symlink, 0, dir, dentry, old_name);
1169}
1170
1171int security_path_link(struct dentry *old_dentry, const struct path *new_dir,
1172 struct dentry *new_dentry)
1173{
1174 if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry))))
1175 return 0;
1176 return call_int_hook(path_link, 0, old_dentry, new_dir, new_dentry);
1177}
1178
1179int security_path_rename(const struct path *old_dir, struct dentry *old_dentry,
1180 const struct path *new_dir, struct dentry *new_dentry,
1181 unsigned int flags)
1182{
1183 if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)) ||
1184 (d_is_positive(new_dentry) && IS_PRIVATE(d_backing_inode(new_dentry)))))
1185 return 0;
1186
1187 if (flags & RENAME_EXCHANGE) {
1188 int err = call_int_hook(path_rename, 0, new_dir, new_dentry,
1189 old_dir, old_dentry);
1190 if (err)
1191 return err;
1192 }
1193
1194 return call_int_hook(path_rename, 0, old_dir, old_dentry, new_dir,
1195 new_dentry);
1196}
1197EXPORT_SYMBOL(security_path_rename);
1198
1199int security_path_truncate(const struct path *path)
1200{
1201 if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry))))
1202 return 0;
1203 return call_int_hook(path_truncate, 0, path);
1204}
1205
1206int security_path_chmod(const struct path *path, umode_t mode)
1207{
1208 if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry))))
1209 return 0;
1210 return call_int_hook(path_chmod, 0, path, mode);
1211}
1212
1213int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid)
1214{
1215 if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry))))
1216 return 0;
1217 return call_int_hook(path_chown, 0, path, uid, gid);
1218}
1219
1220int security_path_chroot(const struct path *path)
1221{
1222 return call_int_hook(path_chroot, 0, path);
1223}
1224#endif
1225
1226int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode)
1227{
1228 if (unlikely(IS_PRIVATE(dir)))
1229 return 0;
1230 return call_int_hook(inode_create, 0, dir, dentry, mode);
1231}
1232EXPORT_SYMBOL_GPL(security_inode_create);
1233
1234int security_inode_link(struct dentry *old_dentry, struct inode *dir,
1235 struct dentry *new_dentry)
1236{
1237 if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry))))
1238 return 0;
1239 return call_int_hook(inode_link, 0, old_dentry, dir, new_dentry);
1240}
1241
1242int security_inode_unlink(struct inode *dir, struct dentry *dentry)
1243{
1244 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
1245 return 0;
1246 return call_int_hook(inode_unlink, 0, dir, dentry);
1247}
1248
1249int security_inode_symlink(struct inode *dir, struct dentry *dentry,
1250 const char *old_name)
1251{
1252 if (unlikely(IS_PRIVATE(dir)))
1253 return 0;
1254 return call_int_hook(inode_symlink, 0, dir, dentry, old_name);
1255}
1256
1257int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
1258{
1259 if (unlikely(IS_PRIVATE(dir)))
1260 return 0;
1261 return call_int_hook(inode_mkdir, 0, dir, dentry, mode);
1262}
1263EXPORT_SYMBOL_GPL(security_inode_mkdir);
1264
1265int security_inode_rmdir(struct inode *dir, struct dentry *dentry)
1266{
1267 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
1268 return 0;
1269 return call_int_hook(inode_rmdir, 0, dir, dentry);
1270}
1271
1272int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev)
1273{
1274 if (unlikely(IS_PRIVATE(dir)))
1275 return 0;
1276 return call_int_hook(inode_mknod, 0, dir, dentry, mode, dev);
1277}
1278
1279int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry,
1280 struct inode *new_dir, struct dentry *new_dentry,
1281 unsigned int flags)
1282{
1283 if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)) ||
1284 (d_is_positive(new_dentry) && IS_PRIVATE(d_backing_inode(new_dentry)))))
1285 return 0;
1286
1287 if (flags & RENAME_EXCHANGE) {
1288 int err = call_int_hook(inode_rename, 0, new_dir, new_dentry,
1289 old_dir, old_dentry);
1290 if (err)
1291 return err;
1292 }
1293
1294 return call_int_hook(inode_rename, 0, old_dir, old_dentry,
1295 new_dir, new_dentry);
1296}
1297
1298int security_inode_readlink(struct dentry *dentry)
1299{
1300 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
1301 return 0;
1302 return call_int_hook(inode_readlink, 0, dentry);
1303}
1304
1305int security_inode_follow_link(struct dentry *dentry, struct inode *inode,
1306 bool rcu)
1307{
1308 if (unlikely(IS_PRIVATE(inode)))
1309 return 0;
1310 return call_int_hook(inode_follow_link, 0, dentry, inode, rcu);
1311}
1312
1313int security_inode_permission(struct inode *inode, int mask)
1314{
1315 if (unlikely(IS_PRIVATE(inode)))
1316 return 0;
1317 return call_int_hook(inode_permission, 0, inode, mask);
1318}
1319
1320int security_inode_setattr(struct dentry *dentry, struct iattr *attr)
1321{
1322 int ret;
1323
1324 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
1325 return 0;
1326 ret = call_int_hook(inode_setattr, 0, dentry, attr);
1327 if (ret)
1328 return ret;
1329 return evm_inode_setattr(dentry, attr);
1330}
1331EXPORT_SYMBOL_GPL(security_inode_setattr);
1332
1333int security_inode_getattr(const struct path *path)
1334{
1335 if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry))))
1336 return 0;
1337 return call_int_hook(inode_getattr, 0, path);
1338}
1339
1340int security_inode_setxattr(struct user_namespace *mnt_userns,
1341 struct dentry *dentry, const char *name,
1342 const void *value, size_t size, int flags)
1343{
1344 int ret;
1345
1346 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
1347 return 0;
1348
1349
1350
1351
1352 ret = call_int_hook(inode_setxattr, 1, mnt_userns, dentry, name, value,
1353 size, flags);
1354
1355 if (ret == 1)
1356 ret = cap_inode_setxattr(dentry, name, value, size, flags);
1357 if (ret)
1358 return ret;
1359 ret = ima_inode_setxattr(dentry, name, value, size);
1360 if (ret)
1361 return ret;
1362 return evm_inode_setxattr(mnt_userns, dentry, name, value, size);
1363}
1364
1365void security_inode_post_setxattr(struct dentry *dentry, const char *name,
1366 const void *value, size_t size, int flags)
1367{
1368 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
1369 return;
1370 call_void_hook(inode_post_setxattr, dentry, name, value, size, flags);
1371 evm_inode_post_setxattr(dentry, name, value, size);
1372}
1373
1374int security_inode_getxattr(struct dentry *dentry, const char *name)
1375{
1376 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
1377 return 0;
1378 return call_int_hook(inode_getxattr, 0, dentry, name);
1379}
1380
1381int security_inode_listxattr(struct dentry *dentry)
1382{
1383 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
1384 return 0;
1385 return call_int_hook(inode_listxattr, 0, dentry);
1386}
1387
1388int security_inode_removexattr(struct user_namespace *mnt_userns,
1389 struct dentry *dentry, const char *name)
1390{
1391 int ret;
1392
1393 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
1394 return 0;
1395
1396
1397
1398
1399 ret = call_int_hook(inode_removexattr, 1, mnt_userns, dentry, name);
1400 if (ret == 1)
1401 ret = cap_inode_removexattr(mnt_userns, dentry, name);
1402 if (ret)
1403 return ret;
1404 ret = ima_inode_removexattr(dentry, name);
1405 if (ret)
1406 return ret;
1407 return evm_inode_removexattr(mnt_userns, dentry, name);
1408}
1409
1410int security_inode_need_killpriv(struct dentry *dentry)
1411{
1412 return call_int_hook(inode_need_killpriv, 0, dentry);
1413}
1414
1415int security_inode_killpriv(struct user_namespace *mnt_userns,
1416 struct dentry *dentry)
1417{
1418 return call_int_hook(inode_killpriv, 0, mnt_userns, dentry);
1419}
1420
1421int security_inode_getsecurity(struct user_namespace *mnt_userns,
1422 struct inode *inode, const char *name,
1423 void **buffer, bool alloc)
1424{
1425 struct security_hook_list *hp;
1426 int rc;
1427
1428 if (unlikely(IS_PRIVATE(inode)))
1429 return LSM_RET_DEFAULT(inode_getsecurity);
1430
1431
1432
1433 hlist_for_each_entry(hp, &security_hook_heads.inode_getsecurity, list) {
1434 rc = hp->hook.inode_getsecurity(mnt_userns, inode, name, buffer, alloc);
1435 if (rc != LSM_RET_DEFAULT(inode_getsecurity))
1436 return rc;
1437 }
1438 return LSM_RET_DEFAULT(inode_getsecurity);
1439}
1440
1441int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
1442{
1443 struct security_hook_list *hp;
1444 int rc;
1445
1446 if (unlikely(IS_PRIVATE(inode)))
1447 return LSM_RET_DEFAULT(inode_setsecurity);
1448
1449
1450
1451 hlist_for_each_entry(hp, &security_hook_heads.inode_setsecurity, list) {
1452 rc = hp->hook.inode_setsecurity(inode, name, value, size,
1453 flags);
1454 if (rc != LSM_RET_DEFAULT(inode_setsecurity))
1455 return rc;
1456 }
1457 return LSM_RET_DEFAULT(inode_setsecurity);
1458}
1459
1460int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
1461{
1462 if (unlikely(IS_PRIVATE(inode)))
1463 return 0;
1464 return call_int_hook(inode_listsecurity, 0, inode, buffer, buffer_size);
1465}
1466EXPORT_SYMBOL(security_inode_listsecurity);
1467
1468void security_inode_getsecid(struct inode *inode, u32 *secid)
1469{
1470 call_void_hook(inode_getsecid, inode, secid);
1471}
1472
1473int security_inode_copy_up(struct dentry *src, struct cred **new)
1474{
1475 return call_int_hook(inode_copy_up, 0, src, new);
1476}
1477EXPORT_SYMBOL(security_inode_copy_up);
1478
1479int security_inode_copy_up_xattr(const char *name)
1480{
1481 struct security_hook_list *hp;
1482 int rc;
1483
1484
1485
1486
1487
1488
1489 hlist_for_each_entry(hp,
1490 &security_hook_heads.inode_copy_up_xattr, list) {
1491 rc = hp->hook.inode_copy_up_xattr(name);
1492 if (rc != LSM_RET_DEFAULT(inode_copy_up_xattr))
1493 return rc;
1494 }
1495
1496 return LSM_RET_DEFAULT(inode_copy_up_xattr);
1497}
1498EXPORT_SYMBOL(security_inode_copy_up_xattr);
1499
1500int security_kernfs_init_security(struct kernfs_node *kn_dir,
1501 struct kernfs_node *kn)
1502{
1503 return call_int_hook(kernfs_init_security, 0, kn_dir, kn);
1504}
1505
1506int security_file_permission(struct file *file, int mask)
1507{
1508 int ret;
1509
1510 ret = call_int_hook(file_permission, 0, file, mask);
1511 if (ret)
1512 return ret;
1513
1514 return fsnotify_perm(file, mask);
1515}
1516
1517int security_file_alloc(struct file *file)
1518{
1519 int rc = lsm_file_alloc(file);
1520
1521 if (rc)
1522 return rc;
1523 rc = call_int_hook(file_alloc_security, 0, file);
1524 if (unlikely(rc))
1525 security_file_free(file);
1526 return rc;
1527}
1528
1529void security_file_free(struct file *file)
1530{
1531 void *blob;
1532
1533 call_void_hook(file_free_security, file);
1534
1535 blob = file->f_security;
1536 if (blob) {
1537 file->f_security = NULL;
1538 kmem_cache_free(lsm_file_cache, blob);
1539 }
1540}
1541
1542int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
1543{
1544 return call_int_hook(file_ioctl, 0, file, cmd, arg);
1545}
1546EXPORT_SYMBOL_GPL(security_file_ioctl);
1547
1548static inline unsigned long mmap_prot(struct file *file, unsigned long prot)
1549{
1550
1551
1552
1553
1554 if ((prot & (PROT_READ | PROT_EXEC)) != PROT_READ)
1555 return prot;
1556 if (!(current->personality & READ_IMPLIES_EXEC))
1557 return prot;
1558
1559
1560
1561 if (!file)
1562 return prot | PROT_EXEC;
1563
1564
1565
1566
1567 if (!path_noexec(&file->f_path)) {
1568#ifndef CONFIG_MMU
1569 if (file->f_op->mmap_capabilities) {
1570 unsigned caps = file->f_op->mmap_capabilities(file);
1571 if (!(caps & NOMMU_MAP_EXEC))
1572 return prot;
1573 }
1574#endif
1575 return prot | PROT_EXEC;
1576 }
1577
1578 return prot;
1579}
1580
1581int security_mmap_file(struct file *file, unsigned long prot,
1582 unsigned long flags)
1583{
1584 int ret;
1585 ret = call_int_hook(mmap_file, 0, file, prot,
1586 mmap_prot(file, prot), flags);
1587 if (ret)
1588 return ret;
1589 return ima_file_mmap(file, prot);
1590}
1591
1592int security_mmap_addr(unsigned long addr)
1593{
1594 return call_int_hook(mmap_addr, 0, addr);
1595}
1596
1597int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
1598 unsigned long prot)
1599{
1600 int ret;
1601
1602 ret = call_int_hook(file_mprotect, 0, vma, reqprot, prot);
1603 if (ret)
1604 return ret;
1605 return ima_file_mprotect(vma, prot);
1606}
1607
1608int security_file_lock(struct file *file, unsigned int cmd)
1609{
1610 return call_int_hook(file_lock, 0, file, cmd);
1611}
1612
1613int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg)
1614{
1615 return call_int_hook(file_fcntl, 0, file, cmd, arg);
1616}
1617
1618void security_file_set_fowner(struct file *file)
1619{
1620 call_void_hook(file_set_fowner, file);
1621}
1622
1623int security_file_send_sigiotask(struct task_struct *tsk,
1624 struct fown_struct *fown, int sig)
1625{
1626 return call_int_hook(file_send_sigiotask, 0, tsk, fown, sig);
1627}
1628
1629int security_file_receive(struct file *file)
1630{
1631 return call_int_hook(file_receive, 0, file);
1632}
1633
1634int security_file_open(struct file *file)
1635{
1636 int ret;
1637
1638 ret = call_int_hook(file_open, 0, file);
1639 if (ret)
1640 return ret;
1641
1642 return fsnotify_perm(file, MAY_OPEN);
1643}
1644
1645int security_task_alloc(struct task_struct *task, unsigned long clone_flags)
1646{
1647 int rc = lsm_task_alloc(task);
1648
1649 if (rc)
1650 return rc;
1651 rc = call_int_hook(task_alloc, 0, task, clone_flags);
1652 if (unlikely(rc))
1653 security_task_free(task);
1654 return rc;
1655}
1656
1657void security_task_free(struct task_struct *task)
1658{
1659 call_void_hook(task_free, task);
1660
1661 kfree(task->security);
1662 task->security = NULL;
1663}
1664
1665int security_cred_alloc_blank(struct cred *cred, gfp_t gfp)
1666{
1667 int rc = lsm_cred_alloc(cred, gfp);
1668
1669 if (rc)
1670 return rc;
1671
1672 rc = call_int_hook(cred_alloc_blank, 0, cred, gfp);
1673 if (unlikely(rc))
1674 security_cred_free(cred);
1675 return rc;
1676}
1677
1678void security_cred_free(struct cred *cred)
1679{
1680
1681
1682
1683
1684 if (unlikely(cred->security == NULL))
1685 return;
1686
1687 call_void_hook(cred_free, cred);
1688
1689 kfree(cred->security);
1690 cred->security = NULL;
1691}
1692
1693int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp)
1694{
1695 int rc = lsm_cred_alloc(new, gfp);
1696
1697 if (rc)
1698 return rc;
1699
1700 rc = call_int_hook(cred_prepare, 0, new, old, gfp);
1701 if (unlikely(rc))
1702 security_cred_free(new);
1703 return rc;
1704}
1705
1706void security_transfer_creds(struct cred *new, const struct cred *old)
1707{
1708 call_void_hook(cred_transfer, new, old);
1709}
1710
1711void security_cred_getsecid(const struct cred *c, u32 *secid)
1712{
1713 *secid = 0;
1714 call_void_hook(cred_getsecid, c, secid);
1715}
1716EXPORT_SYMBOL(security_cred_getsecid);
1717
1718int security_kernel_act_as(struct cred *new, u32 secid)
1719{
1720 return call_int_hook(kernel_act_as, 0, new, secid);
1721}
1722
1723int security_kernel_create_files_as(struct cred *new, struct inode *inode)
1724{
1725 return call_int_hook(kernel_create_files_as, 0, new, inode);
1726}
1727
1728int security_kernel_module_request(char *kmod_name)
1729{
1730 int ret;
1731
1732 ret = call_int_hook(kernel_module_request, 0, kmod_name);
1733 if (ret)
1734 return ret;
1735 return integrity_kernel_module_request(kmod_name);
1736}
1737
1738int security_kernel_read_file(struct file *file, enum kernel_read_file_id id,
1739 bool contents)
1740{
1741 int ret;
1742
1743 ret = call_int_hook(kernel_read_file, 0, file, id, contents);
1744 if (ret)
1745 return ret;
1746 return ima_read_file(file, id, contents);
1747}
1748EXPORT_SYMBOL_GPL(security_kernel_read_file);
1749
1750int security_kernel_post_read_file(struct file *file, char *buf, loff_t size,
1751 enum kernel_read_file_id id)
1752{
1753 int ret;
1754
1755 ret = call_int_hook(kernel_post_read_file, 0, file, buf, size, id);
1756 if (ret)
1757 return ret;
1758 return ima_post_read_file(file, buf, size, id);
1759}
1760EXPORT_SYMBOL_GPL(security_kernel_post_read_file);
1761
1762int security_kernel_load_data(enum kernel_load_data_id id, bool contents)
1763{
1764 int ret;
1765
1766 ret = call_int_hook(kernel_load_data, 0, id, contents);
1767 if (ret)
1768 return ret;
1769 return ima_load_data(id, contents);
1770}
1771EXPORT_SYMBOL_GPL(security_kernel_load_data);
1772
1773int security_kernel_post_load_data(char *buf, loff_t size,
1774 enum kernel_load_data_id id,
1775 char *description)
1776{
1777 int ret;
1778
1779 ret = call_int_hook(kernel_post_load_data, 0, buf, size, id,
1780 description);
1781 if (ret)
1782 return ret;
1783 return ima_post_load_data(buf, size, id, description);
1784}
1785EXPORT_SYMBOL_GPL(security_kernel_post_load_data);
1786
1787int security_task_fix_setuid(struct cred *new, const struct cred *old,
1788 int flags)
1789{
1790 return call_int_hook(task_fix_setuid, 0, new, old, flags);
1791}
1792
1793int security_task_fix_setgid(struct cred *new, const struct cred *old,
1794 int flags)
1795{
1796 return call_int_hook(task_fix_setgid, 0, new, old, flags);
1797}
1798
1799int security_task_setpgid(struct task_struct *p, pid_t pgid)
1800{
1801 return call_int_hook(task_setpgid, 0, p, pgid);
1802}
1803
1804int security_task_getpgid(struct task_struct *p)
1805{
1806 return call_int_hook(task_getpgid, 0, p);
1807}
1808
1809int security_task_getsid(struct task_struct *p)
1810{
1811 return call_int_hook(task_getsid, 0, p);
1812}
1813
1814void security_current_getsecid_subj(u32 *secid)
1815{
1816 *secid = 0;
1817 call_void_hook(current_getsecid_subj, secid);
1818}
1819EXPORT_SYMBOL(security_current_getsecid_subj);
1820
1821void security_task_getsecid_obj(struct task_struct *p, u32 *secid)
1822{
1823 *secid = 0;
1824 call_void_hook(task_getsecid_obj, p, secid);
1825}
1826EXPORT_SYMBOL(security_task_getsecid_obj);
1827
1828int security_task_setnice(struct task_struct *p, int nice)
1829{
1830 return call_int_hook(task_setnice, 0, p, nice);
1831}
1832
1833int security_task_setioprio(struct task_struct *p, int ioprio)
1834{
1835 return call_int_hook(task_setioprio, 0, p, ioprio);
1836}
1837
1838int security_task_getioprio(struct task_struct *p)
1839{
1840 return call_int_hook(task_getioprio, 0, p);
1841}
1842
1843int security_task_prlimit(const struct cred *cred, const struct cred *tcred,
1844 unsigned int flags)
1845{
1846 return call_int_hook(task_prlimit, 0, cred, tcred, flags);
1847}
1848
1849int security_task_setrlimit(struct task_struct *p, unsigned int resource,
1850 struct rlimit *new_rlim)
1851{
1852 return call_int_hook(task_setrlimit, 0, p, resource, new_rlim);
1853}
1854
1855int security_task_setscheduler(struct task_struct *p)
1856{
1857 return call_int_hook(task_setscheduler, 0, p);
1858}
1859
1860int security_task_getscheduler(struct task_struct *p)
1861{
1862 return call_int_hook(task_getscheduler, 0, p);
1863}
1864
1865int security_task_movememory(struct task_struct *p)
1866{
1867 return call_int_hook(task_movememory, 0, p);
1868}
1869
1870int security_task_kill(struct task_struct *p, struct kernel_siginfo *info,
1871 int sig, const struct cred *cred)
1872{
1873 return call_int_hook(task_kill, 0, p, info, sig, cred);
1874}
1875
1876int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
1877 unsigned long arg4, unsigned long arg5)
1878{
1879 int thisrc;
1880 int rc = LSM_RET_DEFAULT(task_prctl);
1881 struct security_hook_list *hp;
1882
1883 hlist_for_each_entry(hp, &security_hook_heads.task_prctl, list) {
1884 thisrc = hp->hook.task_prctl(option, arg2, arg3, arg4, arg5);
1885 if (thisrc != LSM_RET_DEFAULT(task_prctl)) {
1886 rc = thisrc;
1887 if (thisrc != 0)
1888 break;
1889 }
1890 }
1891 return rc;
1892}
1893
1894void security_task_to_inode(struct task_struct *p, struct inode *inode)
1895{
1896 call_void_hook(task_to_inode, p, inode);
1897}
1898
1899int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag)
1900{
1901 return call_int_hook(ipc_permission, 0, ipcp, flag);
1902}
1903
1904void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
1905{
1906 *secid = 0;
1907 call_void_hook(ipc_getsecid, ipcp, secid);
1908}
1909
1910int security_msg_msg_alloc(struct msg_msg *msg)
1911{
1912 int rc = lsm_msg_msg_alloc(msg);
1913
1914 if (unlikely(rc))
1915 return rc;
1916 rc = call_int_hook(msg_msg_alloc_security, 0, msg);
1917 if (unlikely(rc))
1918 security_msg_msg_free(msg);
1919 return rc;
1920}
1921
1922void security_msg_msg_free(struct msg_msg *msg)
1923{
1924 call_void_hook(msg_msg_free_security, msg);
1925 kfree(msg->security);
1926 msg->security = NULL;
1927}
1928
1929int security_msg_queue_alloc(struct kern_ipc_perm *msq)
1930{
1931 int rc = lsm_ipc_alloc(msq);
1932
1933 if (unlikely(rc))
1934 return rc;
1935 rc = call_int_hook(msg_queue_alloc_security, 0, msq);
1936 if (unlikely(rc))
1937 security_msg_queue_free(msq);
1938 return rc;
1939}
1940
1941void security_msg_queue_free(struct kern_ipc_perm *msq)
1942{
1943 call_void_hook(msg_queue_free_security, msq);
1944 kfree(msq->security);
1945 msq->security = NULL;
1946}
1947
1948int security_msg_queue_associate(struct kern_ipc_perm *msq, int msqflg)
1949{
1950 return call_int_hook(msg_queue_associate, 0, msq, msqflg);
1951}
1952
1953int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd)
1954{
1955 return call_int_hook(msg_queue_msgctl, 0, msq, cmd);
1956}
1957
1958int security_msg_queue_msgsnd(struct kern_ipc_perm *msq,
1959 struct msg_msg *msg, int msqflg)
1960{
1961 return call_int_hook(msg_queue_msgsnd, 0, msq, msg, msqflg);
1962}
1963
1964int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, struct msg_msg *msg,
1965 struct task_struct *target, long type, int mode)
1966{
1967 return call_int_hook(msg_queue_msgrcv, 0, msq, msg, target, type, mode);
1968}
1969
1970int security_shm_alloc(struct kern_ipc_perm *shp)
1971{
1972 int rc = lsm_ipc_alloc(shp);
1973
1974 if (unlikely(rc))
1975 return rc;
1976 rc = call_int_hook(shm_alloc_security, 0, shp);
1977 if (unlikely(rc))
1978 security_shm_free(shp);
1979 return rc;
1980}
1981
1982void security_shm_free(struct kern_ipc_perm *shp)
1983{
1984 call_void_hook(shm_free_security, shp);
1985 kfree(shp->security);
1986 shp->security = NULL;
1987}
1988
1989int security_shm_associate(struct kern_ipc_perm *shp, int shmflg)
1990{
1991 return call_int_hook(shm_associate, 0, shp, shmflg);
1992}
1993
1994int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd)
1995{
1996 return call_int_hook(shm_shmctl, 0, shp, cmd);
1997}
1998
1999int security_shm_shmat(struct kern_ipc_perm *shp, char __user *shmaddr, int shmflg)
2000{
2001 return call_int_hook(shm_shmat, 0, shp, shmaddr, shmflg);
2002}
2003
2004int security_sem_alloc(struct kern_ipc_perm *sma)
2005{
2006 int rc = lsm_ipc_alloc(sma);
2007
2008 if (unlikely(rc))
2009 return rc;
2010 rc = call_int_hook(sem_alloc_security, 0, sma);
2011 if (unlikely(rc))
2012 security_sem_free(sma);
2013 return rc;
2014}
2015
2016void security_sem_free(struct kern_ipc_perm *sma)
2017{
2018 call_void_hook(sem_free_security, sma);
2019 kfree(sma->security);
2020 sma->security = NULL;
2021}
2022
2023int security_sem_associate(struct kern_ipc_perm *sma, int semflg)
2024{
2025 return call_int_hook(sem_associate, 0, sma, semflg);
2026}
2027
2028int security_sem_semctl(struct kern_ipc_perm *sma, int cmd)
2029{
2030 return call_int_hook(sem_semctl, 0, sma, cmd);
2031}
2032
2033int security_sem_semop(struct kern_ipc_perm *sma, struct sembuf *sops,
2034 unsigned nsops, int alter)
2035{
2036 return call_int_hook(sem_semop, 0, sma, sops, nsops, alter);
2037}
2038
2039void security_d_instantiate(struct dentry *dentry, struct inode *inode)
2040{
2041 if (unlikely(inode && IS_PRIVATE(inode)))
2042 return;
2043 call_void_hook(d_instantiate, dentry, inode);
2044}
2045EXPORT_SYMBOL(security_d_instantiate);
2046
2047int security_getprocattr(struct task_struct *p, const char *lsm, char *name,
2048 char **value)
2049{
2050 struct security_hook_list *hp;
2051
2052 hlist_for_each_entry(hp, &security_hook_heads.getprocattr, list) {
2053 if (lsm != NULL && strcmp(lsm, hp->lsm))
2054 continue;
2055 return hp->hook.getprocattr(p, name, value);
2056 }
2057 return LSM_RET_DEFAULT(getprocattr);
2058}
2059
2060int security_setprocattr(const char *lsm, const char *name, void *value,
2061 size_t size)
2062{
2063 struct security_hook_list *hp;
2064
2065 hlist_for_each_entry(hp, &security_hook_heads.setprocattr, list) {
2066 if (lsm != NULL && strcmp(lsm, hp->lsm))
2067 continue;
2068 return hp->hook.setprocattr(name, value, size);
2069 }
2070 return LSM_RET_DEFAULT(setprocattr);
2071}
2072
2073int security_netlink_send(struct sock *sk, struct sk_buff *skb)
2074{
2075 return call_int_hook(netlink_send, 0, sk, skb);
2076}
2077
2078int security_ismaclabel(const char *name)
2079{
2080 return call_int_hook(ismaclabel, 0, name);
2081}
2082EXPORT_SYMBOL(security_ismaclabel);
2083
2084int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
2085{
2086 struct security_hook_list *hp;
2087 int rc;
2088
2089
2090
2091
2092
2093 hlist_for_each_entry(hp, &security_hook_heads.secid_to_secctx, list) {
2094 rc = hp->hook.secid_to_secctx(secid, secdata, seclen);
2095 if (rc != LSM_RET_DEFAULT(secid_to_secctx))
2096 return rc;
2097 }
2098
2099 return LSM_RET_DEFAULT(secid_to_secctx);
2100}
2101EXPORT_SYMBOL(security_secid_to_secctx);
2102
2103int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid)
2104{
2105 *secid = 0;
2106 return call_int_hook(secctx_to_secid, 0, secdata, seclen, secid);
2107}
2108EXPORT_SYMBOL(security_secctx_to_secid);
2109
2110void security_release_secctx(char *secdata, u32 seclen)
2111{
2112 call_void_hook(release_secctx, secdata, seclen);
2113}
2114EXPORT_SYMBOL(security_release_secctx);
2115
2116void security_inode_invalidate_secctx(struct inode *inode)
2117{
2118 call_void_hook(inode_invalidate_secctx, inode);
2119}
2120EXPORT_SYMBOL(security_inode_invalidate_secctx);
2121
2122int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
2123{
2124 return call_int_hook(inode_notifysecctx, 0, inode, ctx, ctxlen);
2125}
2126EXPORT_SYMBOL(security_inode_notifysecctx);
2127
2128int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
2129{
2130 return call_int_hook(inode_setsecctx, 0, dentry, ctx, ctxlen);
2131}
2132EXPORT_SYMBOL(security_inode_setsecctx);
2133
2134int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen)
2135{
2136 return call_int_hook(inode_getsecctx, -EOPNOTSUPP, inode, ctx, ctxlen);
2137}
2138EXPORT_SYMBOL(security_inode_getsecctx);
2139
2140#ifdef CONFIG_WATCH_QUEUE
2141int security_post_notification(const struct cred *w_cred,
2142 const struct cred *cred,
2143 struct watch_notification *n)
2144{
2145 return call_int_hook(post_notification, 0, w_cred, cred, n);
2146}
2147#endif
2148
2149#ifdef CONFIG_KEY_NOTIFICATIONS
2150int security_watch_key(struct key *key)
2151{
2152 return call_int_hook(watch_key, 0, key);
2153}
2154#endif
2155
2156#ifdef CONFIG_SECURITY_NETWORK
2157
2158int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk)
2159{
2160 return call_int_hook(unix_stream_connect, 0, sock, other, newsk);
2161}
2162EXPORT_SYMBOL(security_unix_stream_connect);
2163
2164int security_unix_may_send(struct socket *sock, struct socket *other)
2165{
2166 return call_int_hook(unix_may_send, 0, sock, other);
2167}
2168EXPORT_SYMBOL(security_unix_may_send);
2169
2170int security_socket_create(int family, int type, int protocol, int kern)
2171{
2172 return call_int_hook(socket_create, 0, family, type, protocol, kern);
2173}
2174
2175int security_socket_post_create(struct socket *sock, int family,
2176 int type, int protocol, int kern)
2177{
2178 return call_int_hook(socket_post_create, 0, sock, family, type,
2179 protocol, kern);
2180}
2181
2182int security_socket_socketpair(struct socket *socka, struct socket *sockb)
2183{
2184 return call_int_hook(socket_socketpair, 0, socka, sockb);
2185}
2186EXPORT_SYMBOL(security_socket_socketpair);
2187
2188int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen)
2189{
2190 return call_int_hook(socket_bind, 0, sock, address, addrlen);
2191}
2192
2193int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen)
2194{
2195 return call_int_hook(socket_connect, 0, sock, address, addrlen);
2196}
2197
2198int security_socket_listen(struct socket *sock, int backlog)
2199{
2200 return call_int_hook(socket_listen, 0, sock, backlog);
2201}
2202
2203int security_socket_accept(struct socket *sock, struct socket *newsock)
2204{
2205 return call_int_hook(socket_accept, 0, sock, newsock);
2206}
2207
2208int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size)
2209{
2210 return call_int_hook(socket_sendmsg, 0, sock, msg, size);
2211}
2212
2213int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
2214 int size, int flags)
2215{
2216 return call_int_hook(socket_recvmsg, 0, sock, msg, size, flags);
2217}
2218
2219int security_socket_getsockname(struct socket *sock)
2220{
2221 return call_int_hook(socket_getsockname, 0, sock);
2222}
2223
2224int security_socket_getpeername(struct socket *sock)
2225{
2226 return call_int_hook(socket_getpeername, 0, sock);
2227}
2228
2229int security_socket_getsockopt(struct socket *sock, int level, int optname)
2230{
2231 return call_int_hook(socket_getsockopt, 0, sock, level, optname);
2232}
2233
2234int security_socket_setsockopt(struct socket *sock, int level, int optname)
2235{
2236 return call_int_hook(socket_setsockopt, 0, sock, level, optname);
2237}
2238
2239int security_socket_shutdown(struct socket *sock, int how)
2240{
2241 return call_int_hook(socket_shutdown, 0, sock, how);
2242}
2243
2244int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb)
2245{
2246 return call_int_hook(socket_sock_rcv_skb, 0, sk, skb);
2247}
2248EXPORT_SYMBOL(security_sock_rcv_skb);
2249
2250int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
2251 int __user *optlen, unsigned len)
2252{
2253 return call_int_hook(socket_getpeersec_stream, -ENOPROTOOPT, sock,
2254 optval, optlen, len);
2255}
2256
2257int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
2258{
2259 return call_int_hook(socket_getpeersec_dgram, -ENOPROTOOPT, sock,
2260 skb, secid);
2261}
2262EXPORT_SYMBOL(security_socket_getpeersec_dgram);
2263
2264int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
2265{
2266 return call_int_hook(sk_alloc_security, 0, sk, family, priority);
2267}
2268
2269void security_sk_free(struct sock *sk)
2270{
2271 call_void_hook(sk_free_security, sk);
2272}
2273
2274void security_sk_clone(const struct sock *sk, struct sock *newsk)
2275{
2276 call_void_hook(sk_clone_security, sk, newsk);
2277}
2278EXPORT_SYMBOL(security_sk_clone);
2279
2280void security_sk_classify_flow(struct sock *sk, struct flowi_common *flic)
2281{
2282 call_void_hook(sk_getsecid, sk, &flic->flowic_secid);
2283}
2284EXPORT_SYMBOL(security_sk_classify_flow);
2285
2286void security_req_classify_flow(const struct request_sock *req,
2287 struct flowi_common *flic)
2288{
2289 call_void_hook(req_classify_flow, req, flic);
2290}
2291EXPORT_SYMBOL(security_req_classify_flow);
2292
2293void security_sock_graft(struct sock *sk, struct socket *parent)
2294{
2295 call_void_hook(sock_graft, sk, parent);
2296}
2297EXPORT_SYMBOL(security_sock_graft);
2298
2299int security_inet_conn_request(const struct sock *sk,
2300 struct sk_buff *skb, struct request_sock *req)
2301{
2302 return call_int_hook(inet_conn_request, 0, sk, skb, req);
2303}
2304EXPORT_SYMBOL(security_inet_conn_request);
2305
2306void security_inet_csk_clone(struct sock *newsk,
2307 const struct request_sock *req)
2308{
2309 call_void_hook(inet_csk_clone, newsk, req);
2310}
2311
2312void security_inet_conn_established(struct sock *sk,
2313 struct sk_buff *skb)
2314{
2315 call_void_hook(inet_conn_established, sk, skb);
2316}
2317EXPORT_SYMBOL(security_inet_conn_established);
2318
2319int security_secmark_relabel_packet(u32 secid)
2320{
2321 return call_int_hook(secmark_relabel_packet, 0, secid);
2322}
2323EXPORT_SYMBOL(security_secmark_relabel_packet);
2324
2325void security_secmark_refcount_inc(void)
2326{
2327 call_void_hook(secmark_refcount_inc);
2328}
2329EXPORT_SYMBOL(security_secmark_refcount_inc);
2330
2331void security_secmark_refcount_dec(void)
2332{
2333 call_void_hook(secmark_refcount_dec);
2334}
2335EXPORT_SYMBOL(security_secmark_refcount_dec);
2336
2337int security_tun_dev_alloc_security(void **security)
2338{
2339 return call_int_hook(tun_dev_alloc_security, 0, security);
2340}
2341EXPORT_SYMBOL(security_tun_dev_alloc_security);
2342
2343void security_tun_dev_free_security(void *security)
2344{
2345 call_void_hook(tun_dev_free_security, security);
2346}
2347EXPORT_SYMBOL(security_tun_dev_free_security);
2348
2349int security_tun_dev_create(void)
2350{
2351 return call_int_hook(tun_dev_create, 0);
2352}
2353EXPORT_SYMBOL(security_tun_dev_create);
2354
2355int security_tun_dev_attach_queue(void *security)
2356{
2357 return call_int_hook(tun_dev_attach_queue, 0, security);
2358}
2359EXPORT_SYMBOL(security_tun_dev_attach_queue);
2360
2361int security_tun_dev_attach(struct sock *sk, void *security)
2362{
2363 return call_int_hook(tun_dev_attach, 0, sk, security);
2364}
2365EXPORT_SYMBOL(security_tun_dev_attach);
2366
2367int security_tun_dev_open(void *security)
2368{
2369 return call_int_hook(tun_dev_open, 0, security);
2370}
2371EXPORT_SYMBOL(security_tun_dev_open);
2372
2373int security_sctp_assoc_request(struct sctp_association *asoc, struct sk_buff *skb)
2374{
2375 return call_int_hook(sctp_assoc_request, 0, asoc, skb);
2376}
2377EXPORT_SYMBOL(security_sctp_assoc_request);
2378
2379int security_sctp_bind_connect(struct sock *sk, int optname,
2380 struct sockaddr *address, int addrlen)
2381{
2382 return call_int_hook(sctp_bind_connect, 0, sk, optname,
2383 address, addrlen);
2384}
2385EXPORT_SYMBOL(security_sctp_bind_connect);
2386
2387void security_sctp_sk_clone(struct sctp_association *asoc, struct sock *sk,
2388 struct sock *newsk)
2389{
2390 call_void_hook(sctp_sk_clone, asoc, sk, newsk);
2391}
2392EXPORT_SYMBOL(security_sctp_sk_clone);
2393
2394#endif
2395
2396#ifdef CONFIG_SECURITY_INFINIBAND
2397
2398int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey)
2399{
2400 return call_int_hook(ib_pkey_access, 0, sec, subnet_prefix, pkey);
2401}
2402EXPORT_SYMBOL(security_ib_pkey_access);
2403
2404int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num)
2405{
2406 return call_int_hook(ib_endport_manage_subnet, 0, sec, dev_name, port_num);
2407}
2408EXPORT_SYMBOL(security_ib_endport_manage_subnet);
2409
2410int security_ib_alloc_security(void **sec)
2411{
2412 return call_int_hook(ib_alloc_security, 0, sec);
2413}
2414EXPORT_SYMBOL(security_ib_alloc_security);
2415
2416void security_ib_free_security(void *sec)
2417{
2418 call_void_hook(ib_free_security, sec);
2419}
2420EXPORT_SYMBOL(security_ib_free_security);
2421#endif
2422
2423#ifdef CONFIG_SECURITY_NETWORK_XFRM
2424
2425int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp,
2426 struct xfrm_user_sec_ctx *sec_ctx,
2427 gfp_t gfp)
2428{
2429 return call_int_hook(xfrm_policy_alloc_security, 0, ctxp, sec_ctx, gfp);
2430}
2431EXPORT_SYMBOL(security_xfrm_policy_alloc);
2432
2433int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx,
2434 struct xfrm_sec_ctx **new_ctxp)
2435{
2436 return call_int_hook(xfrm_policy_clone_security, 0, old_ctx, new_ctxp);
2437}
2438
2439void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
2440{
2441 call_void_hook(xfrm_policy_free_security, ctx);
2442}
2443EXPORT_SYMBOL(security_xfrm_policy_free);
2444
2445int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
2446{
2447 return call_int_hook(xfrm_policy_delete_security, 0, ctx);
2448}
2449
2450int security_xfrm_state_alloc(struct xfrm_state *x,
2451 struct xfrm_user_sec_ctx *sec_ctx)
2452{
2453 return call_int_hook(xfrm_state_alloc, 0, x, sec_ctx);
2454}
2455EXPORT_SYMBOL(security_xfrm_state_alloc);
2456
2457int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
2458 struct xfrm_sec_ctx *polsec, u32 secid)
2459{
2460 return call_int_hook(xfrm_state_alloc_acquire, 0, x, polsec, secid);
2461}
2462
2463int security_xfrm_state_delete(struct xfrm_state *x)
2464{
2465 return call_int_hook(xfrm_state_delete_security, 0, x);
2466}
2467EXPORT_SYMBOL(security_xfrm_state_delete);
2468
2469void security_xfrm_state_free(struct xfrm_state *x)
2470{
2471 call_void_hook(xfrm_state_free_security, x);
2472}
2473
2474int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid)
2475{
2476 return call_int_hook(xfrm_policy_lookup, 0, ctx, fl_secid);
2477}
2478
2479int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
2480 struct xfrm_policy *xp,
2481 const struct flowi_common *flic)
2482{
2483 struct security_hook_list *hp;
2484 int rc = LSM_RET_DEFAULT(xfrm_state_pol_flow_match);
2485
2486
2487
2488
2489
2490
2491
2492
2493
2494
2495 hlist_for_each_entry(hp, &security_hook_heads.xfrm_state_pol_flow_match,
2496 list) {
2497 rc = hp->hook.xfrm_state_pol_flow_match(x, xp, flic);
2498 break;
2499 }
2500 return rc;
2501}
2502
2503int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
2504{
2505 return call_int_hook(xfrm_decode_session, 0, skb, secid, 1);
2506}
2507
2508void security_skb_classify_flow(struct sk_buff *skb, struct flowi_common *flic)
2509{
2510 int rc = call_int_hook(xfrm_decode_session, 0, skb, &flic->flowic_secid,
2511 0);
2512
2513 BUG_ON(rc);
2514}
2515EXPORT_SYMBOL(security_skb_classify_flow);
2516
2517#endif
2518
2519#ifdef CONFIG_KEYS
2520
2521int security_key_alloc(struct key *key, const struct cred *cred,
2522 unsigned long flags)
2523{
2524 return call_int_hook(key_alloc, 0, key, cred, flags);
2525}
2526
2527void security_key_free(struct key *key)
2528{
2529 call_void_hook(key_free, key);
2530}
2531
2532int security_key_permission(key_ref_t key_ref, const struct cred *cred,
2533 enum key_need_perm need_perm)
2534{
2535 return call_int_hook(key_permission, 0, key_ref, cred, need_perm);
2536}
2537
2538int security_key_getsecurity(struct key *key, char **_buffer)
2539{
2540 *_buffer = NULL;
2541 return call_int_hook(key_getsecurity, 0, key, _buffer);
2542}
2543
2544#endif
2545
2546#ifdef CONFIG_AUDIT
2547
2548int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule)
2549{
2550 return call_int_hook(audit_rule_init, 0, field, op, rulestr, lsmrule);
2551}
2552
2553int security_audit_rule_known(struct audit_krule *krule)
2554{
2555 return call_int_hook(audit_rule_known, 0, krule);
2556}
2557
2558void security_audit_rule_free(void *lsmrule)
2559{
2560 call_void_hook(audit_rule_free, lsmrule);
2561}
2562
2563int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule)
2564{
2565 return call_int_hook(audit_rule_match, 0, secid, field, op, lsmrule);
2566}
2567#endif
2568
2569#ifdef CONFIG_BPF_SYSCALL
2570int security_bpf(int cmd, union bpf_attr *attr, unsigned int size)
2571{
2572 return call_int_hook(bpf, 0, cmd, attr, size);
2573}
2574int security_bpf_map(struct bpf_map *map, fmode_t fmode)
2575{
2576 return call_int_hook(bpf_map, 0, map, fmode);
2577}
2578int security_bpf_prog(struct bpf_prog *prog)
2579{
2580 return call_int_hook(bpf_prog, 0, prog);
2581}
2582int security_bpf_map_alloc(struct bpf_map *map)
2583{
2584 return call_int_hook(bpf_map_alloc_security, 0, map);
2585}
2586int security_bpf_prog_alloc(struct bpf_prog_aux *aux)
2587{
2588 return call_int_hook(bpf_prog_alloc_security, 0, aux);
2589}
2590void security_bpf_map_free(struct bpf_map *map)
2591{
2592 call_void_hook(bpf_map_free_security, map);
2593}
2594void security_bpf_prog_free(struct bpf_prog_aux *aux)
2595{
2596 call_void_hook(bpf_prog_free_security, aux);
2597}
2598#endif
2599
2600int security_locked_down(enum lockdown_reason what)
2601{
2602 return call_int_hook(locked_down, 0, what);
2603}
2604EXPORT_SYMBOL(security_locked_down);
2605
2606#ifdef CONFIG_PERF_EVENTS
2607int security_perf_event_open(struct perf_event_attr *attr, int type)
2608{
2609 return call_int_hook(perf_event_open, 0, attr, type);
2610}
2611
2612int security_perf_event_alloc(struct perf_event *event)
2613{
2614 return call_int_hook(perf_event_alloc, 0, event);
2615}
2616
2617void security_perf_event_free(struct perf_event *event)
2618{
2619 call_void_hook(perf_event_free, event);
2620}
2621
2622int security_perf_event_read(struct perf_event *event)
2623{
2624 return call_int_hook(perf_event_read, 0, event);
2625}
2626
2627int security_perf_event_write(struct perf_event *event)
2628{
2629 return call_int_hook(perf_event_write, 0, event);
2630}
2631#endif
2632
2633#ifdef CONFIG_IO_URING
2634int security_uring_override_creds(const struct cred *new)
2635{
2636 return call_int_hook(uring_override_creds, 0, new);
2637}
2638
2639int security_uring_sqpoll(void)
2640{
2641 return call_int_hook(uring_sqpoll, 0);
2642}
2643#endif
2644