summaryrefslogtreecommitdiffstats
path: root/include/linux/audit.h
blob: b889fa64b0e0933c73b41f09e0e1006fc0f86f7c (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
/* audit.h -- Auditing support
 *
 * Copyright 2003-2004 Red Hat Inc., Durham, North Carolina.
 * All Rights Reserved.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * Written by Rickard E. (Rik) Faith <faith@redhat.com>
 *
 */

#ifndef _LINUX_AUDIT_H_
#define _LINUX_AUDIT_H_

#include <linux/types.h>
#include <linux/elf-em.h>
#include <linux/ptrace.h>

/* The netlink messages for the audit system is divided into blocks:
 * 1000 - 1099 are for commanding the audit system
 * 1100 - 1199 user space trusted application messages
 * 1200 - 1299 messages internal to the audit daemon
 * 1300 - 1399 audit event messages
 * 1400 - 1499 SE Linux use
 * 1500 - 1599 kernel LSPP events
 * 1600 - 1699 kernel crypto events
 * 1700 - 1799 kernel anomaly records
 * 1800 - 1899 kernel integrity events
 * 1900 - 1999 future kernel use
 * 2000 is for otherwise unclassified kernel audit messages (legacy)
 * 2001 - 2099 unused (kernel)
 * 2100 - 2199 user space anomaly records
 * 2200 - 2299 user space actions taken in response to anomalies
 * 2300 - 2399 user space generated LSPP events
 * 2400 - 2499 user space crypto events
 * 2500 - 2999 future user space (maybe integrity labels and related events)
 *
 * Messages from 1000-1199 are bi-directional. 1200-1299 & 2100 - 2999 are
 * exclusively user space. 1300-2099 is kernel --> user space 
 * communication.
 */
#define AUDIT_GET		1000	/* Get status */
#define AUDIT_SET		1001	/* Set status (enable/disable/auditd) */
#define AUDIT_LIST		1002	/* List syscall rules -- deprecated */
#define AUDIT_ADD		1003	/* Add syscall rule -- deprecated */
#define AUDIT_DEL		1004	/* Delete syscall rule -- deprecated */
#define AUDIT_USER		1005	/* Message from userspace -- deprecated */
#define AUDIT_LOGIN		1006	/* Define the login id and information */
#define AUDIT_WATCH_INS		1007	/* Insert file/dir watch entry */
#define AUDIT_WATCH_REM		1008	/* Remove file/dir watch entry */
#define AUDIT_WATCH_LIST	1009	/* List all file/dir watches */
#define AUDIT_SIGNAL_INFO	1010	/* Get info about sender of signal to auditd */
#define AUDIT_ADD_RULE		1011	/* Add syscall filtering rule */
#define AUDIT_DEL_RULE		1012	/* Delete syscall filtering rule */
#define AUDIT_LIST_RULES	1013	/* List syscall filtering rules */
#define AUDIT_TRIM		1014	/* Trim junk from watched tree */
#define AUDIT_MAKE_EQUIV	1015	/* Append to watched tree */
#define AUDIT_TTY_GET		1016	/* Get TTY auditing status */
#define AUDIT_TTY_SET		1017	/* Set TTY auditing status */

#define AUDIT_FIRST_USER_MSG	1100	/* Userspace messages mostly uninteresting to kernel */
#define AUDIT_USER_AVC		1107	/* We filter this differently */
#define AUDIT_USER_TTY		1124	/* Non-ICANON TTY input meaning */
#define AUDIT_LAST_USER_MSG	1199
#define AUDIT_FIRST_USER_MSG2	2100	/* More user space messages */
#define AUDIT_LAST_USER_MSG2	2999
 
#define AUDIT_DAEMON_START      1200    /* Daemon startup record */
#define AUDIT_DAEMON_END        1201    /* Daemon normal stop record */
#define AUDIT_DAEMON_ABORT      1202    /* Daemon error stop record */
#define AUDIT_DAEMON_CONFIG     1203    /* Daemon config change */

#define AUDIT_SYSCALL		1300	/* Syscall event */
/* #define AUDIT_FS_WATCH	1301	 * Deprecated */
#define AUDIT_PATH		1302	/* Filename path information */
#define AUDIT_IPC		1303	/* IPC record */
#define AUDIT_SOCKETCALL	1304	/* sys_socketcall arguments */
#define AUDIT_CONFIG_CHANGE	1305	/* Audit system configuration change */
#define AUDIT_SOCKADDR		1306	/* sockaddr copied as syscall arg */
#define AUDIT_CWD		1307	/* Current working directory */
#define AUDIT_EXECVE		1309	/* execve arguments */
#define AUDIT_IPC_SET_PERM	1311	/* IPC new permissions record type */
#define AUDIT_MQ_OPEN		1312	/* POSIX MQ open record type */
#define AUDIT_MQ_SENDRECV	1313	/* POSIX MQ send/receive record type */
#define AUDIT_MQ_NOTIFY		1314	/* POSIX MQ notify record type */
#define AUDIT_MQ_GETSETATTR	1315	/* POSIX MQ get/set attribute record type */
#define AUDIT_KERNEL_OTHER	1316	/* For use by 3rd party modules */
#define AUDIT_FD_PAIR		1317    /* audit record for pipe/socketpair */
#define AUDIT_OBJ_PID		1318	/* ptrace target */
#define AUDIT_TTY		1319	/* Input on an administrative TTY */
#define AUDIT_EOE		1320	/* End of multi-record event */
#define AUDIT_BPRM_FCAPS	1321	/* Information about fcaps increasing perms */
#define AUDIT_CAPSET		1322	/* Record showing argument to sys_capset */
#define AUDIT_MMAP		1323	/* Record showing descriptor and flags in mmap */
#define AUDIT_NETFILTER_PKT	1324	/* Packets traversing netfilter chains */
#define AUDIT_NETFILTER_CFG	1325	/* Netfilter chain modifications */

#define AUDIT_AVC		1400	/* SE Linux avc denial or grant */
#define AUDIT_SELINUX_ERR	1401	/* Internal SE Linux Errors */
#define AUDIT_AVC_PATH		1402	/* dentry, vfsmount pair from avc */
#define AUDIT_MAC_POLICY_LOAD	1403	/* Policy file load */
#define AUDIT_MAC_STATUS	1404	/* Changed enforcing,permissive,off */
#define AUDIT_MAC_CONFIG_CHANGE	1405	/* Changes to booleans */
#define AUDIT_MAC_UNLBL_ALLOW	1406	/* NetLabel: allow unlabeled traffic */
#define AUDIT_MAC_CIPSOV4_ADD	1407	/* NetLabel: add CIPSOv4 DOI entry */
#define AUDIT_MAC_CIPSOV4_DEL	1408	/* NetLabel: del CIPSOv4 DOI entry */
#define AUDIT_MAC_MAP_ADD	1409	/* NetLabel: add LSM domain mapping */
#define AUDIT_MAC_MAP_DEL	1410	/* NetLabel: del LSM domain mapping */
#define AUDIT_MAC_IPSEC_ADDSA	1411	/* Not used */
#define AUDIT_MAC_IPSEC_DELSA	1412	/* Not used  */
#define AUDIT_MAC_IPSEC_ADDSPD	1413	/* Not used */
#define AUDIT_MAC_IPSEC_DELSPD	1414	/* Not used */
#define AUDIT_MAC_IPSEC_EVENT	1415	/* Audit an IPSec event */
#define AUDIT_MAC_UNLBL_STCADD	1416	/* NetLabel: add a static label */
#define AUDIT_MAC_UNLBL_STCDEL	1417	/* NetLabel: del a static label */

#define AUDIT_FIRST_KERN_ANOM_MSG   1700
#define AUDIT_LAST_KERN_ANOM_MSG    1799
#define AUDIT_ANOM_PROMISCUOUS      1700 /* Device changed promiscuous mode */
#define AUDIT_ANOM_ABEND            1701 /* Process ended abnormally */
#define AUDIT_ANOM_LINK		    1702 /* Suspicious use of file links */
#define AUDIT_INTEGRITY_DATA	    1800 /* Data integrity verification */
#define AUDIT_INTEGRITY_METADATA    1801 /* Metadata integrity verification */
#define AUDIT_INTEGRITY_STATUS	    1802 /* Integrity enable status */
#define AUDIT_INTEGRITY_HASH	    1803 /* Integrity HASH type */
#define AUDIT_INTEGRITY_PCR	    1804 /* PCR invalidation msgs */
#define AUDIT_INTEGRITY_RULE	    1805 /* policy rule */

#define AUDIT_KERNEL		2000	/* Asynchronous audit record. NOT A REQUEST. */

/* Rule flags */
#define AUDIT_FILTER_USER	0x00	/* Apply rule to user-generated messages */
#define AUDIT_FILTER_TASK	0x01	/* Apply rule at task creation (not syscall) */
#define AUDIT_FILTER_ENTRY	0x02	/* Apply rule at syscall entry */
#define AUDIT_FILTER_WATCH	0x03	/* Apply rule to file system watches */
#define AUDIT_FILTER_EXIT	0x04	/* Apply rule at syscall exit */
#define AUDIT_FILTER_TYPE	0x05	/* Apply rule at audit_log_start */

#define AUDIT_NR_FILTERS	6

#define AUDIT_FILTER_PREPEND	0x10	/* Prepend to front of list */

/* Rule actions */
#define AUDIT_NEVER    0	/* Do not build context if rule matches */
#define AUDIT_POSSIBLE 1	/* Build context if rule matches  */
#define AUDIT_ALWAYS   2	/* Generate audit record if rule matches */

/* Rule structure sizes -- if these change, different AUDIT_ADD and
 * AUDIT_LIST commands must be implemented. */
#define AUDIT_MAX_FIELDS   64
#define AUDIT_MAX_KEY_LEN  256
#define AUDIT_BITMASK_SIZE 64
#define AUDIT_WORD(nr) ((__u32)((nr)/32))
#define AUDIT_BIT(nr)  (1 << ((nr) - AUDIT_WORD(nr)*32))

#define AUDIT_SYSCALL_CLASSES 16
#define AUDIT_CLASS_DIR_WRITE 0
#define AUDIT_CLASS_DIR_WRITE_32 1
#define AUDIT_CLASS_CHATTR 2
#define AUDIT_CLASS_CHATTR_32 3
#define AUDIT_CLASS_READ 4
#define AUDIT_CLASS_READ_32 5
#define AUDIT_CLASS_WRITE 6
#define AUDIT_CLASS_WRITE_32 7
#define AUDIT_CLASS_SIGNAL 8
#define AUDIT_CLASS_SIGNAL_32 9

/* This bitmask is used to validate user input.  It represents all bits that
 * are currently used in an audit field constant understood by the kernel.
 * If you are adding a new #define AUDIT_<whatever>, please ensure that
 * AUDIT_UNUSED_BITS is updated if need be. */
#define AUDIT_UNUSED_BITS	0x07FFFC00

/* AUDIT_FIELD_COMPARE rule list */
#define AUDIT_COMPARE_UID_TO_OBJ_UID	1
#define AUDIT_COMPARE_GID_TO_OBJ_GID	2
#define AUDIT_COMPARE_EUID_TO_OBJ_UID	3
#define AUDIT_COMPARE_EGID_TO_OBJ_GID	4
#define AUDIT_COMPARE_AUID_TO_OBJ_UID	5
#define AUDIT_COMPARE_SUID_TO_OBJ_UID	6
#define AUDIT_COMPARE_SGID_TO_OBJ_GID	7
#define AUDIT_COMPARE_FSUID_TO_OBJ_UID	8
#define AUDIT_COMPARE_FSGID_TO_OBJ_GID	9

#define AUDIT_COMPARE_UID_TO_AUID	10
#define AUDIT_COMPARE_UID_TO_EUID	11
#define AUDIT_COMPARE_UID_TO_FSUID	12
#define AUDIT_COMPARE_UID_TO_SUID	13

#define AUDIT_COMPARE_AUID_TO_FSUID	14
#define AUDIT_COMPARE_AUID_TO_SUID	15
#define AUDIT_COMPARE_AUID_TO_EUID	16

#define AUDIT_COMPARE_EUID_TO_SUID	17
#define AUDIT_COMPARE_EUID_TO_FSUID	18

#define AUDIT_COMPARE_SUID_TO_FSUID	19

#define AUDIT_COMPARE_GID_TO_EGID	20
#define AUDIT_COMPARE_GID_TO_FSGID	21
#define AUDIT_COMPARE_GID_TO_SGID	22

#define AUDIT_COMPARE_EGID_TO_FSGID	23
#define AUDIT_COMPARE_EGID_TO_SGID	24
#define AUDIT_COMPARE_SGID_TO_FSGID	25

#define AUDIT_MAX_FIELD_COMPARE		AUDIT_COMPARE_SGID_TO_FSGID

/* Rule fields */
				/* These are useful when checking the
				 * task structure at task creation time
				 * (AUDIT_PER_TASK).  */
#define AUDIT_PID	0
#define AUDIT_UID	1
#define AUDIT_EUID	2
#define AUDIT_SUID	3
#define AUDIT_FSUID	4
#define AUDIT_GID	5
#define AUDIT_EGID	6
#define AUDIT_SGID	7
#define AUDIT_FSGID	8
#define AUDIT_LOGINUID	9
#define AUDIT_PERS	10
#define AUDIT_ARCH	11
#define AUDIT_MSGTYPE	12
#define AUDIT_SUBJ_USER	13	/* security label user */
#define AUDIT_SUBJ_ROLE	14	/* security label role */
#define AUDIT_SUBJ_TYPE	15	/* security label type */
#define AUDIT_SUBJ_SEN	16	/* security label sensitivity label */
#define AUDIT_SUBJ_CLR	17	/* security label clearance label */
#define AUDIT_PPID	18
#define AUDIT_OBJ_USER	19
#define AUDIT_OBJ_ROLE	20
#define AUDIT_OBJ_TYPE	21
#define AUDIT_OBJ_LEV_LOW	22
#define AUDIT_OBJ_LEV_HIGH	23

				/* These are ONLY useful when checking
				 * at syscall exit time (AUDIT_AT_EXIT). */
#define AUDIT_DEVMAJOR	100
#define AUDIT_DEVMINOR	101
#define AUDIT_INODE	102
#define AUDIT_EXIT	103
#define AUDIT_SUCCESS   104	/* exit >= 0; value ignored */
#define AUDIT_WATCH	105
#define AUDIT_PERM	106
#define AUDIT_DIR	107
#define AUDIT_FILETYPE	108
#define AUDIT_OBJ_UID	109
#define AUDIT_OBJ_GID	110
#define AUDIT_FIELD_COMPARE	111

#define AUDIT_ARG0      200
#define AUDIT_ARG1      (AUDIT_ARG0+1)
#define AUDIT_ARG2      (AUDIT_ARG0+2)
#define AUDIT_ARG3      (AUDIT_ARG0+3)

#define AUDIT_FILTERKEY	210

#define AUDIT_NEGATE			0x80000000

/* These are the supported operators.
 *	4  2  1  8
 *	=  >  <  ?
 *	----------
 *	0  0  0	 0	00	nonsense
 *	0  0  0	 1	08	&  bit mask
 *	0  0  1	 0	10	<
 *	0  1  0	 0	20	>
 *	0  1  1	 0	30	!=
 *	1  0  0	 0	40	=
 *	1  0  0	 1	48	&=  bit test
 *	1  0  1	 0	50	<=
 *	1  1  0	 0	60	>=
 *	1  1  1	 1	78	all operators
 */
#define AUDIT_BIT_MASK			0x08000000
#define AUDIT_LESS_THAN			0x10000000
#define AUDIT_GREATER_THAN		0x20000000
#define AUDIT_NOT_EQUAL			0x30000000
#define AUDIT_EQUAL			0x40000000
#define AUDIT_BIT_TEST			(AUDIT_BIT_MASK|AUDIT_EQUAL)
#define AUDIT_LESS_THAN_OR_EQUAL	(AUDIT_LESS_THAN|AUDIT_EQUAL)
#define AUDIT_GREATER_THAN_OR_EQUAL	(AUDIT_GREATER_THAN|AUDIT_EQUAL)
#define AUDIT_OPERATORS			(AUDIT_EQUAL|AUDIT_NOT_EQUAL|AUDIT_BIT_MASK)

enum {
	Audit_equal,
	Audit_not_equal,
	Audit_bitmask,
	Audit_bittest,
	Audit_lt,
	Audit_gt,
	Audit_le,
	Audit_ge,
	Audit_bad
};

/* Status symbols */
				/* Mask values */
#define AUDIT_STATUS_ENABLED		0x0001
#define AUDIT_STATUS_FAILURE		0x0002
#define AUDIT_STATUS_PID		0x0004
#define AUDIT_STATUS_RATE_LIMIT		0x0008
#define AUDIT_STATUS_BACKLOG_LIMIT	0x0010
				/* Failure-to-log actions */
#define AUDIT_FAIL_SILENT	0
#define AUDIT_FAIL_PRINTK	1
#define AUDIT_FAIL_PANIC	2

/* distinguish syscall tables */
#define __AUDIT_ARCH_64BIT 0x80000000
#define __AUDIT_ARCH_LE	   0x40000000
#define AUDIT_ARCH_ALPHA	(EM_ALPHA|__AUDIT_ARCH_64BIT|__AUDIT_ARCH_LE)
#define AUDIT_ARCH_ARM		(EM_ARM|__AUDIT_ARCH_LE)
#define AUDIT_ARCH_ARMEB	(EM_ARM)
#define AUDIT_ARCH_CRIS		(EM_CRIS|__AUDIT_ARCH_LE)
#define AUDIT_ARCH_FRV		(EM_FRV)
#define AUDIT_ARCH_H8300	(EM_H8_300)
#define AUDIT_ARCH_I386		(EM_386|__AUDIT_ARCH_LE)
#define AUDIT_ARCH_IA64		(EM_IA_64|__AUDIT_ARCH_64BIT|__AUDIT_ARCH_LE)
#define AUDIT_ARCH_M32R		(EM_M32R)
#define AUDIT_ARCH_M68K		(EM_68K)
#define AUDIT_ARCH_MIPS		(EM_MIPS)
#define AUDIT_ARCH_MIPSEL	(EM_MIPS|__AUDIT_ARCH_LE)
#define AUDIT_ARCH_MIPS64	(EM_MIPS|__AUDIT_ARCH_64BIT)
#define AUDIT_ARCH_MIPSEL64	(EM_MIPS|__AUDIT_ARCH_64BIT|__AUDIT_ARCH_LE)
#define AUDIT_ARCH_OPENRISC	(EM_OPENRISC)
#define AUDIT_ARCH_PARISC	(EM_PARISC)
#define AUDIT_ARCH_PARISC64	(EM_PARISC|__AUDIT_ARCH_64BIT)
#define AUDIT_ARCH_PPC		(EM_PPC)
#define AUDIT_ARCH_PPC64	(EM_PPC64|__AUDIT_ARCH_64BIT)
#define AUDIT_ARCH_S390		(EM_S390)
#define AUDIT_ARCH_S390X	(EM_S390|__AUDIT_ARCH_64BIT)
#define AUDIT_ARCH_SH		(EM_SH)
#define AUDIT_ARCH_SHEL		(EM_SH|__AUDIT_ARCH_LE)
#define AUDIT_ARCH_SH64		(EM_SH|__AUDIT_ARCH_64BIT)
#define AUDIT_ARCH_SHEL64	(EM_SH|__AUDIT_ARCH_64BIT|__AUDIT_ARCH_LE)
#define AUDIT_ARCH_SPARC	(EM_SPARC)
#define AUDIT_ARCH_SPARC64	(EM_SPARCV9|__AUDIT_ARCH_64BIT)
#define AUDIT_ARCH_X86_64	(EM_X86_64|__AUDIT_ARCH_64BIT|__AUDIT_ARCH_LE)

#define AUDIT_PERM_EXEC		1
#define AUDIT_PERM_WRITE	2
#define AUDIT_PERM_READ		4
#define AUDIT_PERM_ATTR		8

struct audit_status {
	__u32		mask;		/* Bit mask for valid entries */
	__u32		enabled;	/* 1 = enabled, 0 = disabled */
	__u32		failure;	/* Failure-to-log action */
	__u32		pid;		/* pid of auditd process */
	__u32		rate_limit;	/* messages rate limit (per second) */
	__u32		backlog_limit;	/* waiting messages limit */
	__u32		lost;		/* messages lost */
	__u32		backlog;	/* messages waiting in queue */
};

struct audit_tty_status {
	__u32		enabled; /* 1 = enabled, 0 = disabled */
};

/* audit_rule_data supports filter rules with both integer and string
 * fields.  It corresponds with AUDIT_ADD_RULE, AUDIT_DEL_RULE and
 * AUDIT_LIST_RULES requests.
 */
struct audit_rule_data {
	__u32		flags;	/* AUDIT_PER_{TASK,CALL}, AUDIT_PREPEND */
	__u32		action;	/* AUDIT_NEVER, AUDIT_POSSIBLE, AUDIT_ALWAYS */
	__u32		field_count;
	__u32		mask[AUDIT_BITMASK_SIZE]; /* syscall(s) affected */
	__u32		fields[AUDIT_MAX_FIELDS];
	__u32		values[AUDIT_MAX_FIELDS];
	__u32		fieldflags[AUDIT_MAX_FIELDS];
	__u32		buflen;	/* total length of string fields */
	char		buf[0];	/* string fields buffer */
};

/* audit_rule is supported to maintain backward compatibility with
 * userspace.  It supports integer fields only and corresponds to
 * AUDIT_ADD, AUDIT_DEL and AUDIT_LIST requests.
 */
struct audit_rule {		/* for AUDIT_LIST, AUDIT_ADD, and AUDIT_DEL */
	__u32		flags;	/* AUDIT_PER_{TASK,CALL}, AUDIT_PREPEND */
	__u32		action;	/* AUDIT_NEVER, AUDIT_POSSIBLE, AUDIT_ALWAYS */
	__u32		field_count;
	__u32		mask[AUDIT_BITMASK_SIZE];
	__u32		fields[AUDIT_MAX_FIELDS];
	__u32		values[AUDIT_MAX_FIELDS];
};

#ifdef __KERNEL__
#include <linux/sched.h>

struct audit_sig_info {
	uid_t		uid;
	pid_t		pid;
	char		ctx[0];
};

struct audit_buffer;
struct audit_context;
struct inode;
struct netlink_skb_parms;
struct path;
struct linux_binprm;
struct mq_attr;
struct mqstat;
struct audit_watch;
struct audit_tree;

struct audit_krule {
	int			vers_ops;
	u32			flags;
	u32			listnr;
	u32			action;
	u32			mask[AUDIT_BITMASK_SIZE];
	u32			buflen; /* for data alloc on list rules */
	u32			field_count;
	char			*filterkey; /* ties events to rules */
	struct audit_field	*fields;
	struct audit_field	*arch_f; /* quick access to arch field */
	struct audit_field	*inode_f; /* quick access to an inode field */
	struct audit_watch	*watch;	/* associated watch */
	struct audit_tree	*tree;	/* associated watched tree */
	struct list_head	rlist;	/* entry in audit_{watch,tree}.rules list */
	struct list_head	list;	/* for AUDIT_LIST* purposes only */
	u64			prio;
};

struct audit_field {
	u32				type;
	u32				val;
	kuid_t				uid;
	kgid_t				gid;
	u32				op;
	char				*lsm_str;
	void				*lsm_rule;
};

extern int __init audit_register_class(int class, unsigned *list);
extern int audit_classify_syscall(int abi, unsigned syscall);
extern int audit_classify_arch(int arch);

/* audit_names->type values */
#define	AUDIT_TYPE_UNKNOWN	0	/* we don't know yet */
#define	AUDIT_TYPE_NORMAL	1	/* a "normal" audit record */
#define	AUDIT_TYPE_PARENT	2	/* a parent audit record */
#define	AUDIT_TYPE_CHILD_DELETE 3	/* a child being deleted */
#define	AUDIT_TYPE_CHILD_CREATE 4	/* a child being created */

struct filename;

#ifdef CONFIG_AUDITSYSCALL
/* These are defined in auditsc.c */
				/* Public API */
extern int  audit_alloc(struct task_struct *task);
extern void __audit_free(struct task_struct *task);
extern void __audit_syscall_entry(int arch,
				  int major, unsigned long a0, unsigned long a1,
				  unsigned long a2, unsigned long a3);
extern void __audit_syscall_exit(int ret_success, long ret_value);
extern struct filename *__audit_reusename(const __user char *uptr);
extern void __audit_getname(struct filename *name);
extern void audit_putname(struct filename *name);
extern void __audit_inode(struct filename *name, const struct dentry *dentry,
				unsigned int parent);
extern void __audit_inode_child(const struct inode *parent,
				const struct dentry *dentry,
				const unsigned char type);
extern void __audit_seccomp(unsigned long syscall, long signr, int code);
extern void __audit_ptrace(struct task_struct *t);

static inline int audit_dummy_context(void)
{
	void *p = current->audit_context;
	return !p || *(int *)p;
}
static inline void audit_free(struct task_struct *task)
{
	if (unlikely(task->audit_context))
		__audit_free(task);
}
static inline void audit_syscall_entry(int arch, int major, unsigned long a0,
				       unsigned long a1, unsigned long a2,
				       unsigned long a3)
{
	if (unlikely(!audit_dummy_context()))
		__audit_syscall_entry(arch, major, a0, a1, a2, a3);
}
static inline void audit_syscall_exit(void *pt_regs)
{
	if (unlikely(current->audit_context)) {
		int success = is_syscall_success(pt_regs);
		int return_code = regs_return_value(pt_regs);

		__audit_syscall_exit(success, return_code);
	}
}
static inline struct filename *audit_reusename(const __user char *name)
{
	if (unlikely(!audit_dummy_context()))
		return __audit_reusename(name);
	return NULL;
}
static inline void audit_getname(struct filename *name)
{
	if (unlikely(!audit_dummy_context()))
		__audit_getname(name);
}
static inline void audit_inode(struct filename *name, const struct dentry *dentry,
				unsigned int parent) {
	if (unlikely(!audit_dummy_context()))
		__audit_inode(name, dentry, parent);
}
static inline void audit_inode_child(const struct inode *parent,
				     const struct dentry *dentry,
				     const unsigned char type) {
	if (unlikely(!audit_dummy_context()))
		__audit_inode_child(parent, dentry, type);
}
void audit_core_dumps(long signr);

static inline void audit_seccomp(unsigned long syscall, long signr, int code)
{
	if (unlikely(!audit_dummy_context()))
		__audit_seccomp(syscall, signr, code);
}

static inline void audit_ptrace(struct task_struct *t)
{
	if (unlikely(!audit_dummy_context()))
		__audit_ptrace(t);
}

				/* Private API (for audit.c only) */
extern unsigned int audit_serial(void);
extern int auditsc_get_stamp(struct audit_context *ctx,
			      struct timespec *t, unsigned int *serial);
extern int audit_set_loginuid(kuid_t loginuid);

static inline kuid_t audit_get_loginuid(struct task_struct *tsk)
{
	return tsk->loginuid;
}

static inline int audit_get_sessionid(struct task_struct *tsk)
{
	return tsk->sessionid;
}

extern void audit_log_task_context(struct audit_buffer *ab);
extern void audit_log_task_info(struct audit_buffer *ab, struct task_struct *tsk);
extern void __audit_ipc_obj(struct kern_ipc_perm *ipcp);
extern void __audit_ipc_set_perm(unsigned long qbytes, uid_t uid, gid_t gid, umode_t mode);
extern int __audit_bprm(struct linux_binprm *bprm);
extern void __audit_socketcall(int nargs, unsigned long *args);
extern int __audit_sockaddr(int len, void *addr);
extern void __audit_fd_pair(int fd1, int fd2);
extern void __audit_mq_open(int oflag, umode_t mode, struct mq_attr *attr);
extern void __audit_mq_sendrecv(mqd_t mqdes, size_t msg_len, unsigned int msg_prio, const struct timespec *abs_timeout);
extern void __audit_mq_notify(mqd_t mqdes, const struct sigevent *notification);
extern void __audit_mq_getsetattr(mqd_t mqdes, struct mq_attr *mqstat);
extern int __audit_log_bprm_fcaps(struct linux_binprm *bprm,
				  const struct cred *new,
				  const struct cred *old);
extern void __audit_log_capset(pid_t pid, const struct cred *new, const struct cred *old);
extern void __audit_mmap_fd(int fd, int flags);

static inline void audit_ipc_obj(struct kern_ipc_perm *ipcp)
{
	if (unlikely(!audit_dummy_context()))
		__audit_ipc_obj(ipcp);
}
static inline void audit_fd_pair(int fd1, int fd2)
{
	if (unlikely(!audit_dummy_context()))
		__audit_fd_pair(fd1, fd2);
}
static inline void audit_ipc_set_perm(unsigned long qbytes, uid_t uid, gid_t gid, umode_t mode)
{
	if (unlikely(!audit_dummy_context()))
		__audit_ipc_set_perm(qbytes, uid, gid, mode);
}
static inline int audit_bprm(struct linux_binprm *bprm)
{
	if (unlikely(!audit_dummy_context()))
		return __audit_bprm(bprm);
	return 0;
}
static inline void audit_socketcall(int nargs, unsigned long *args)
{
	if (unlikely(!audit_dummy_context()))
		__audit_socketcall(nargs, args);
}
static inline int audit_sockaddr(int len, void *addr)
{
	if (unlikely(!audit_dummy_context()))
		return __audit_sockaddr(len, addr);
	return 0;
}
static inline void audit_mq_open(int oflag, umode_t mode, struct mq_attr *attr)
{
	if (unlikely(!audit_dummy_context()))
		__audit_mq_open(oflag, mode, attr);
}
static inline void audit_mq_sendrecv(mqd_t mqdes, size_t msg_len, unsigned int msg_prio, const struct timespec *abs_timeout)
{
	if (unlikely(!audit_dummy_context()))
		__audit_mq_sendrecv(mqdes, msg_len, msg_prio, abs_timeout);
}
static inline void audit_mq_notify(mqd_t mqdes, const struct sigevent *notification)
{
	if (unlikely(!audit_dummy_context()))
		__audit_mq_notify(mqdes, notification);
}
static inline void audit_mq_getsetattr(mqd_t mqdes, struct mq_attr *mqstat)
{
	if (unlikely(!audit_dummy_context()))
		__audit_mq_getsetattr(mqdes, mqstat);
}

static inline int audit_log_bprm_fcaps(struct linux_binprm *bprm,
				       const struct cred *new,
				       const struct cred *old)
{
	if (unlikely(!audit_dummy_context()))
		return __audit_log_bprm_fcaps(bprm, new, old);
	return 0;
}

static inline void audit_log_capset(pid_t pid, const struct cred *new,
				   const struct cred *old)
{
	if (unlikely(!audit_dummy_context()))
		__audit_log_capset(pid, new, old);
}

static inline void audit_mmap_fd(int fd, int flags)
{
	if (unlikely(!audit_dummy_context()))
		__audit_mmap_fd(fd, flags);
}

extern int audit_n_rules;
extern int audit_signals;
#else /* CONFIG_AUDITSYSCALL */
static inline int audit_alloc(struct task_struct *task)
{
	return 0;
}
static inline void audit_free(struct task_struct *task)
{ }
static inline void audit_syscall_entry(int arch, int major, unsigned long a0,
				       unsigned long a1, unsigned long a2,
				       unsigned long a3)
{ }
static inline void audit_syscall_exit(void *pt_regs)
{ }
static inline int audit_dummy_context(void)
{
	return 1;
}
static inline struct filename *audit_reusename(const __user char *name)
{
	return NULL;
}
static inline void audit_getname(struct filename *name)
{ }
static inline void audit_putname(struct filename *name)
{ }
static inline void __audit_inode(struct filename *name,
					const struct dentry *dentry,
					unsigned int parent)
{ }
static inline void __audit_inode_child(const struct inode *parent,
					const struct dentry *dentry,
					const unsigned char type)
{ }
static inline void audit_inode(struct filename *name,
				const struct dentry *dentry,
				unsigned int parent)
{ }
static inline void audit_inode_child(const struct inode *parent,
				     const struct dentry *dentry,
				     const unsigned char type)
{ }
static inline void audit_core_dumps(long signr)
{ }
static inline void __audit_seccomp(unsigned long syscall, long signr, int code)
{ }
static inline void audit_seccomp(unsigned long syscall, long signr, int code)
{ }
static inline int auditsc_get_stamp(struct audit_context *ctx,
			      struct timespec *t, unsigned int *serial)
{
	return 0;
}
static inline kuid_t audit_get_loginuid(struct task_struct *tsk)
{
	return INVALID_UID;
}
static inline int audit_get_sessionid(struct task_struct *tsk)
{
	return -1;
}
static inline void audit_log_task_context(struct audit_buffer *ab)
{ }
static inline void audit_log_task_info(struct audit_buffer *ab,
				       struct task_struct *tsk)
{ }
static inline void audit_ipc_obj(struct kern_ipc_perm *ipcp)
{ }
static inline void audit_ipc_set_perm(unsigned long qbytes, uid_t uid,
					gid_t gid, umode_t mode)
{ }
static inline int audit_bprm(struct linux_binprm *bprm)
{
	return 0;
}
static inline void audit_socketcall(int nargs, unsigned long *args)
{ }
static inline void audit_fd_pair(int fd1, int fd2)
{ }
static inline int audit_sockaddr(int len, void *addr)
{
	return 0;
}
static inline void audit_mq_open(int oflag, umode_t mode, struct mq_attr *attr)
{ }
static inline void audit_mq_sendrecv(mqd_t mqdes, size_t msg_len,
				     unsigned int msg_prio,
				     const struct timespec *abs_timeout)
{ }
static inline void audit_mq_notify(mqd_t mqdes,
				   const struct sigevent *notification)
{ }
static inline void audit_mq_getsetattr(mqd_t mqdes, struct mq_attr *mqstat)
{ }
static inline int audit_log_bprm_fcaps(struct linux_binprm *bprm,
				       const struct cred *new,
				       const struct cred *old)
{
	return 0;
}
static inline void audit_log_capset(pid_t pid, const struct cred *new,
				   const struct cred *old)
{ }
static inline void audit_mmap_fd(int fd, int flags)
{ }
static inline void audit_ptrace(struct task_struct *t)
{ }
#define audit_n_rules 0
#define audit_signals 0
#endif /* CONFIG_AUDITSYSCALL */

#ifdef CONFIG_AUDIT
/* These are defined in audit.c */
				/* Public API */
extern __printf(4, 5)
void audit_log(struct audit_context *ctx, gfp_t gfp_mask, int type,
	       const char *fmt, ...);

extern struct audit_buffer *audit_log_start(struct audit_context *ctx, gfp_t gfp_mask, int type);
extern __printf(2, 3)
void audit_log_format(struct audit_buffer *ab, const char *fmt, ...);
extern void		    audit_log_end(struct audit_buffer *ab);
extern int		    audit_string_contains_control(const char *string,
							  size_t len);
extern void		    audit_log_n_hex(struct audit_buffer *ab,
					  const unsigned char *buf,
					  size_t len);
extern void		    audit_log_n_string(struct audit_buffer *ab,
					       const char *buf,
					       size_t n);
extern void		    audit_log_n_untrustedstring(struct audit_buffer *ab,
							const char *string,
							size_t n);
extern void		    audit_log_untrustedstring(struct audit_buffer *ab,
						      const char *string);
extern void		    audit_log_d_path(struct audit_buffer *ab,
					     const char *prefix,
					     const struct path *path);
extern void		    audit_log_key(struct audit_buffer *ab,
					  char *key);
extern void		    audit_log_link_denied(const char *operation,
						  struct path *link);
extern void		    audit_log_lost(const char *message);
#ifdef CONFIG_SECURITY
extern void 		    audit_log_secctx(struct audit_buffer *ab, u32 secid);
#else
static inline void	    audit_log_secctx(struct audit_buffer *ab, u32 secid)
{ }
#endif

extern int		    audit_update_lsm_rules(void);

				/* Private API (for audit.c only) */
extern int audit_filter_user(void);
extern int audit_filter_type(int type);
extern int  audit_receive_filter(int type, int pid, int seq,
				void *data, size_t datasz, kuid_t loginuid,
				u32 sessionid, u32 sid);
extern int audit_enabled;
#else /* CONFIG_AUDIT */
static inline __printf(4, 5)
void audit_log(struct audit_context *ctx, gfp_t gfp_mask, int type,
	       const char *fmt, ...)
{ }
static inline struct audit_buffer *audit_log_start(struct audit_context *ctx,
						   gfp_t gfp_mask, int type)
{
	return NULL;
}
static inline __printf(2, 3)
void audit_log_format(struct audit_buffer *ab, const char *fmt, ...)
{ }
static inline void audit_log_end(struct audit_buffer *ab)
{ }
static inline void audit_log_n_hex(struct audit_buffer *ab,
				   const unsigned char *buf, size_t len)
{ }
static inline void audit_log_n_string(struct audit_buffer *ab,
				      const char *buf, size_t n)
{ }
static inline void  audit_log_n_untrustedstring(struct audit_buffer *ab,
						const char *string, size_t n)
{ }
static inline void audit_log_untrustedstring(struct audit_buffer *ab,
					     const char *string)
{ }
static inline void audit_log_d_path(struct audit_buffer *ab,
				    const char *prefix,
				    const struct path *path)
{ }
static inline void audit_log_key(struct audit_buffer *ab, char *key)
{ }
static inline void audit_log_link_denied(const char *string,
					 const struct path *link)
{ }
static inline void audit_log_secctx(struct audit_buffer *ab, u32 secid)
{ }
#define audit_enabled 0
#endif /* CONFIG_AUDIT */
static inline void audit_log_string(struct audit_buffer *ab, const char *buf)
{
	audit_log_n_string(ab, buf, strlen(buf));
}

#endif
#endif
OpenPOWER on IntegriCloud