aboutsummaryrefslogtreecommitdiffstats
path: root/security/tomoyo/common.h
blob: f4da7a8034a3e4ee1f07d5edb11694c81440a9f3 (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
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
/*
 * security/tomoyo/common.h
 *
 * Header file for TOMOYO.
 *
 * Copyright (C) 2005-2010  NTT DATA CORPORATION
 */

#ifndef _SECURITY_TOMOYO_COMMON_H
#define _SECURITY_TOMOYO_COMMON_H

#include <linux/ctype.h>
#include <linux/string.h>
#include <linux/mm.h>
#include <linux/file.h>
#include <linux/kmod.h>
#include <linux/fs.h>
#include <linux/sched.h>
#include <linux/namei.h>
#include <linux/mount.h>
#include <linux/list.h>
#include <linux/cred.h>
#include <linux/poll.h>
struct linux_binprm;

/********** Constants definitions. **********/

/*
 * TOMOYO uses this hash only when appending a string into the string
 * table. Frequency of appending strings is very low. So we don't need
 * large (e.g. 64k) hash size. 256 will be sufficient.
 */
#define TOMOYO_HASH_BITS  8
#define TOMOYO_MAX_HASH (1u<<TOMOYO_HASH_BITS)

#define TOMOYO_EXEC_TMPSIZE     4096

/* Profile number is an integer between 0 and 255. */
#define TOMOYO_MAX_PROFILES 256

enum tomoyo_mode_index {
	TOMOYO_CONFIG_DISABLED,
	TOMOYO_CONFIG_LEARNING,
	TOMOYO_CONFIG_PERMISSIVE,
	TOMOYO_CONFIG_ENFORCING,
	TOMOYO_CONFIG_USE_DEFAULT = 255
};

/* Keywords for ACLs. */
#define TOMOYO_KEYWORD_AGGREGATOR                "aggregator "
#define TOMOYO_KEYWORD_ALIAS                     "alias "
#define TOMOYO_KEYWORD_ALLOW_MOUNT               "allow_mount "
#define TOMOYO_KEYWORD_ALLOW_READ                "allow_read "
#define TOMOYO_KEYWORD_DELETE                    "delete "
#define TOMOYO_KEYWORD_DENY_REWRITE              "deny_rewrite "
#define TOMOYO_KEYWORD_FILE_PATTERN              "file_pattern "
#define TOMOYO_KEYWORD_INITIALIZE_DOMAIN         "initialize_domain "
#define TOMOYO_KEYWORD_KEEP_DOMAIN               "keep_domain "
#define TOMOYO_KEYWORD_NO_INITIALIZE_DOMAIN      "no_initialize_domain "
#define TOMOYO_KEYWORD_NO_KEEP_DOMAIN            "no_keep_domain "
#define TOMOYO_KEYWORD_PATH_GROUP                "path_group "
#define TOMOYO_KEYWORD_NUMBER_GROUP              "number_group "
#define TOMOYO_KEYWORD_SELECT                    "select "
#define TOMOYO_KEYWORD_USE_PROFILE               "use_profile "
#define TOMOYO_KEYWORD_IGNORE_GLOBAL_ALLOW_READ  "ignore_global_allow_read"
#define TOMOYO_KEYWORD_QUOTA_EXCEEDED            "quota_exceeded"
#define TOMOYO_KEYWORD_TRANSITION_FAILED         "transition_failed"
/* A domain definition starts with <kernel>. */
#define TOMOYO_ROOT_NAME                         "<kernel>"
#define TOMOYO_ROOT_NAME_LEN                     (sizeof(TOMOYO_ROOT_NAME) - 1)

/* Value type definition. */
#define TOMOYO_VALUE_TYPE_INVALID     0
#define TOMOYO_VALUE_TYPE_DECIMAL     1
#define TOMOYO_VALUE_TYPE_OCTAL       2
#define TOMOYO_VALUE_TYPE_HEXADECIMAL 3

/* Index numbers for Access Controls. */
enum tomoyo_acl_entry_type_index {
	TOMOYO_TYPE_PATH_ACL,
	TOMOYO_TYPE_PATH2_ACL,
	TOMOYO_TYPE_PATH_NUMBER_ACL,
	TOMOYO_TYPE_MKDEV_ACL,
	TOMOYO_TYPE_MOUNT_ACL,
};

/* Index numbers for File Controls. */

/*
 * TOMOYO_TYPE_READ_WRITE is special. TOMOYO_TYPE_READ_WRITE is automatically
 * set if both TOMOYO_TYPE_READ and TOMOYO_TYPE_WRITE are set.
 * Both TOMOYO_TYPE_READ and TOMOYO_TYPE_WRITE are automatically set if
 * TOMOYO_TYPE_READ_WRITE is set.
 * TOMOYO_TYPE_READ_WRITE is automatically cleared if either TOMOYO_TYPE_READ
 * or TOMOYO_TYPE_WRITE is cleared.
 * Both TOMOYO_TYPE_READ and TOMOYO_TYPE_WRITE are automatically cleared if
 * TOMOYO_TYPE_READ_WRITE is cleared.
 */

enum tomoyo_path_acl_index {
	TOMOYO_TYPE_READ_WRITE,
	TOMOYO_TYPE_EXECUTE,
	TOMOYO_TYPE_READ,
	TOMOYO_TYPE_WRITE,
	TOMOYO_TYPE_UNLINK,
	TOMOYO_TYPE_RMDIR,
	TOMOYO_TYPE_TRUNCATE,
	TOMOYO_TYPE_SYMLINK,
	TOMOYO_TYPE_REWRITE,
	TOMOYO_TYPE_CHROOT,
	TOMOYO_TYPE_UMOUNT,
	TOMOYO_MAX_PATH_OPERATION
};

#define TOMOYO_RW_MASK ((1 << TOMOYO_TYPE_READ) | (1 << TOMOYO_TYPE_WRITE))

enum tomoyo_mkdev_acl_index {
	TOMOYO_TYPE_MKBLOCK,
	TOMOYO_TYPE_MKCHAR,
	TOMOYO_MAX_MKDEV_OPERATION
};

enum tomoyo_path2_acl_index {
	TOMOYO_TYPE_LINK,
	TOMOYO_TYPE_RENAME,
	TOMOYO_TYPE_PIVOT_ROOT,
	TOMOYO_MAX_PATH2_OPERATION
};

enum tomoyo_path_number_acl_index {
	TOMOYO_TYPE_CREATE,
	TOMOYO_TYPE_MKDIR,
	TOMOYO_TYPE_MKFIFO,
	TOMOYO_TYPE_MKSOCK,
	TOMOYO_TYPE_IOCTL,
	TOMOYO_TYPE_CHMOD,
	TOMOYO_TYPE_CHOWN,
	TOMOYO_TYPE_CHGRP,
	TOMOYO_MAX_PATH_NUMBER_OPERATION
};

enum tomoyo_securityfs_interface_index {
	TOMOYO_DOMAINPOLICY,
	TOMOYO_EXCEPTIONPOLICY,
	TOMOYO_DOMAIN_STATUS,
	TOMOYO_PROCESS_STATUS,
	TOMOYO_MEMINFO,
	TOMOYO_SELFDOMAIN,
	TOMOYO_VERSION,
	TOMOYO_PROFILE,
	TOMOYO_QUERY,
	TOMOYO_MANAGER
};

enum tomoyo_mac_index {
	TOMOYO_MAC_FILE_EXECUTE,
	TOMOYO_MAC_FILE_OPEN,
	TOMOYO_MAC_FILE_CREATE,
	TOMOYO_MAC_FILE_UNLINK,
	TOMOYO_MAC_FILE_MKDIR,
	TOMOYO_MAC_FILE_RMDIR,
	TOMOYO_MAC_FILE_MKFIFO,
	TOMOYO_MAC_FILE_MKSOCK,
	TOMOYO_MAC_FILE_TRUNCATE,
	TOMOYO_MAC_FILE_SYMLINK,
	TOMOYO_MAC_FILE_REWRITE,
	TOMOYO_MAC_FILE_MKBLOCK,
	TOMOYO_MAC_FILE_MKCHAR,
	TOMOYO_MAC_FILE_LINK,
	TOMOYO_MAC_FILE_RENAME,
	TOMOYO_MAC_FILE_CHMOD,
	TOMOYO_MAC_FILE_CHOWN,
	TOMOYO_MAC_FILE_CHGRP,
	TOMOYO_MAC_FILE_IOCTL,
	TOMOYO_MAC_FILE_CHROOT,
	TOMOYO_MAC_FILE_MOUNT,
	TOMOYO_MAC_FILE_UMOUNT,
	TOMOYO_MAC_FILE_PIVOT_ROOT,
	TOMOYO_MAX_MAC_INDEX
};

enum tomoyo_mac_category_index {
	TOMOYO_MAC_CATEGORY_FILE,
	TOMOYO_MAX_MAC_CATEGORY_INDEX
};

#define TOMOYO_RETRY_REQUEST 1 /* Retry this request. */

/********** Structure definitions. **********/

/*
 * tomoyo_acl_head is a structure which is used for holding elements not in
 * domain policy.
 * It has following fields.
 *
 *  (1) "list" which is linked to tomoyo_policy_list[] .
 *  (2) "is_deleted" is a bool which is true if marked as deleted, false
 *      otherwise.
 */
struct tomoyo_acl_head {
	struct list_head list;
	bool is_deleted;
} __packed;

/*
 * tomoyo_request_info is a structure which is used for holding
 *
 * (1) Domain information of current process.
 * (2) How many retries are made for this request.
 * (3) Profile number used for this request.
 * (4) Access control mode of the profile.
 */
struct tomoyo_request_info {
	struct tomoyo_domain_info *domain;
	/* For holding parameters. */
	union {
		struct {
			const struct tomoyo_path_info *filename;
			u8 operation;
		} path;
		struct {
			const struct tomoyo_path_info *filename1;
			const struct tomoyo_path_info *filename2;
			u8 operation;
		} path2;
		struct {
			const struct tomoyo_path_info *filename;
			unsigned int mode;
			unsigned int major;
			unsigned int minor;
			u8 operation;
		} mkdev;
		struct {
			const struct tomoyo_path_info *filename;
			unsigned long number;
			u8 operation;
		} path_number;
		struct {
			const struct tomoyo_path_info *type;
			const struct tomoyo_path_info *dir;
			const struct tomoyo_path_info *dev;
			unsigned long flags;
			int need_dev;
		} mount;
	} param;
	u8 param_type;
	bool granted;
	u8 retry;
	u8 profile;
	u8 mode; /* One of tomoyo_mode_index . */
	u8 type;
};

/*
 * tomoyo_path_info is a structure which is used for holding a string data
 * used by TOMOYO.
 * This structure has several fields for supporting pattern matching.
 *
 * (1) "name" is the '\0' terminated string data.
 * (2) "hash" is full_name_hash(name, strlen(name)).
 *     This allows tomoyo_pathcmp() to compare by hash before actually compare
 *     using strcmp().
 * (3) "const_len" is the length of the initial segment of "name" which
 *     consists entirely of non wildcard characters. In other words, the length
 *     which we can compare two strings using strncmp().
 * (4) "is_dir" is a bool which is true if "name" ends with "/",
 *     false otherwise.
 *     TOMOYO distinguishes directory and non-directory. A directory ends with
 *     "/" and non-directory does not end with "/".
 * (5) "is_patterned" is a bool which is true if "name" contains wildcard
 *     characters, false otherwise. This allows TOMOYO to use "hash" and
 *     strcmp() for string comparison if "is_patterned" is false.
 */
struct tomoyo_path_info {
	const char *name;
	u32 hash;          /* = full_name_hash(name, strlen(name)) */
	u16 const_len;     /* = tomoyo_const_part_length(name)     */
	bool is_dir;       /* = tomoyo_strendswith(name, "/")      */
	bool is_patterned; /* = tomoyo_path_contains_pattern(name) */
};

/*
 * tomoyo_name_entry is a structure which is used for linking
 * "struct tomoyo_path_info" into tomoyo_name_list .
 */
struct tomoyo_name_entry {
	struct list_head list;
	atomic_t users;
	struct tomoyo_path_info entry;
};

struct tomoyo_name_union {
	const struct tomoyo_path_info *filename;
	struct tomoyo_path_group *group;
	u8 is_group;
};

struct tomoyo_number_union {
	unsigned long values[2];
	struct tomoyo_number_group *group;
	u8 min_type;
	u8 max_type;
	u8 is_group;
};

/* Structure for "path_group" directive. */
struct tomoyo_path_group {
	struct list_head list;
	const struct tomoyo_path_info *group_name;
	struct list_head member_list;
	atomic_t users;
};

/* Structure for "number_group" directive. */
struct tomoyo_number_group {
	struct list_head list;
	const struct tomoyo_path_info *group_name;
	struct list_head member_list;
	atomic_t users;
};

/* Structure for "path_group" directive. */
struct tomoyo_path_group_member {
	struct tomoyo_acl_head head;
	const struct tomoyo_path_info *member_name;
};

/* Structure for "number_group" directive. */
struct tomoyo_number_group_member {
	struct tomoyo_acl_head head;
	struct tomoyo_number_union number;
};

/*
 * tomoyo_acl_info is a structure which is used for holding
 *
 *  (1) "list" which is linked to the ->acl_info_list of
 *      "struct tomoyo_domain_info"
 *  (2) "is_deleted" is a bool which is true if this domain is marked as
 *      "deleted", false otherwise.
 *  (3) "type" which tells type of the entry.
 *
 * Packing "struct tomoyo_acl_info" allows
 * "struct tomoyo_path_acl" to embed "u16" and "struct tomoyo_path2_acl"
 * "struct tomoyo_path_number_acl" "struct tomoyo_mkdev_acl" to embed
 * "u8" without enlarging their structure size.
 */
struct tomoyo_acl_info {
	struct list_head list;
	bool is_deleted;
	u8 type; /* = one of values in "enum tomoyo_acl_entry_type_index". */
} __packed;

/*
 * tomoyo_domain_info is a structure which is used for holding permissions
 * (e.g. "allow_read /lib/libc-2.5.so") given to each domain.
 * It has following fields.
 *
 *  (1) "list" which is linked to tomoyo_domain_list .
 *  (2) "acl_info_list" which is linked to "struct tomoyo_acl_info".
 *  (3) "domainname" which holds the name of the domain.
 *  (4) "profile" which remembers profile number assigned to this domain.
 *  (5) "is_deleted" is a bool which is true if this domain is marked as
 *      "deleted", false otherwise.
 *  (6) "quota_warned" is a bool which is used for suppressing warning message
 *      when learning mode learned too much entries.
 *  (7) "ignore_global_allow_read" is a bool which is true if this domain
 *      should ignore "allow_read" directive in exception policy.
 *  (8) "transition_failed" is a bool which is set to true when this domain was
 *      unable to create a new domain at tomoyo_find_next_domain() because the
 *      name of the domain to be created was too long or it could not allocate
 *      memory. If set to true, more than one process continued execve()
 *      without domain transition.
 *  (9) "users" is an atomic_t that holds how many "struct cred"->security
 *      are referring this "struct tomoyo_domain_info". If is_deleted == true
 *      and users == 0, this struct will be kfree()d upon next garbage
 *      collection.
 *
 * A domain's lifecycle is an analogy of files on / directory.
 * Multiple domains with the same domainname cannot be created (as with
 * creating files with the same filename fails with -EEXIST).
 * If a process reached a domain, that process can reside in that domain after
 * that domain is marked as "deleted" (as with a process can access an already
 * open()ed file after that file was unlink()ed).
 */
struct tomoyo_domain_info {
	struct list_head list;
	struct list_head acl_info_list;
	/* Name of this domain. Never NULL.          */
	const struct tomoyo_path_info *domainname;
	u8 profile;        /* Profile number to use. */
	bool is_deleted;   /* Delete flag.           */
	bool quota_warned; /* Quota warnning flag.   */
	bool ignore_global_allow_read; /* Ignore "allow_read" flag. */
	bool transition_failed; /* Domain transition failed flag. */
	atomic_t users; /* Number of referring credentials. */
};

/*
 * tomoyo_path_acl is a structure which is used for holding an
 * entry with one pathname operation (e.g. open(), mkdir()).
 * It has following fields.
 *
 *  (1) "head" which is a "struct tomoyo_acl_info".
 *  (2) "perm" which is a bitmask of permitted operations.
 *  (3) "name" is the pathname.
 *
 * Directives held by this structure are "allow_read/write", "allow_execute",
 * "allow_read", "allow_write", "allow_unlink", "allow_rmdir",
 * "allow_truncate", "allow_symlink", "allow_rewrite", "allow_chroot" and
 * "allow_unmount".
 */
struct tomoyo_path_acl {
	struct tomoyo_acl_info head; /* type = TOMOYO_TYPE_PATH_ACL */
	u16 perm;
	struct tomoyo_name_union name;
};

/*
 * tomoyo_path_number_acl is a structure which is used for holding an
 * entry with one pathname and one number operation.
 * It has following fields.
 *
 *  (1) "head" which is a "struct tomoyo_acl_info".
 *  (2) "perm" which is a bitmask of permitted operations.
 *  (3) "name" is the pathname.
 *  (4) "number" is the numeric value.
 *
 * Directives held by this structure are "allow_create", "allow_mkdir",
 * "allow_ioctl", "allow_mkfifo", "allow_mksock", "allow_chmod", "allow_chown"
 * and "allow_chgrp".
 *
 */
struct tomoyo_path_number_acl {
	struct tomoyo_acl_info head; /* type = TOMOYO_TYPE_PATH_NUMBER_ACL */
	u8 perm;
	struct tomoyo_name_union name;
	struct tomoyo_number_union number;
};

/*
 * tomoyo_mkdev_acl is a structure which is used for holding an
 * entry with one pathname and three numbers operation.
 * It has following fields.
 *
 *  (1) "head" which is a "struct tomoyo_acl_info".
 *  (2) "perm" which is a bitmask of permitted operations.
 *  (3) "mode" is the create mode.
 *  (4) "major" is the major number of device node.
 *  (5) "minor" is the minor number of device node.
 *
 * Directives held by this structure are "allow_mkchar", "allow_mkblock".
 *
 */
struct tomoyo_mkdev_acl {
	struct tomoyo_acl_info head; /* type = TOMOYO_TYPE_MKDEV_ACL */
	u8 perm;
	struct tomoyo_name_union name;
	struct tomoyo_number_union mode;
	struct tomoyo_number_union major;
	struct tomoyo_number_union minor;
};

/*
 * tomoyo_path2_acl is a structure which is used for holding an
 * entry with two pathnames operation (i.e. link(), rename() and pivot_root()).
 * It has following fields.
 *
 *  (1) "head" which is a "struct tomoyo_acl_info".
 *  (2) "perm" which is a bitmask of permitted operations.
 *  (3) "name1" is the source/old pathname.
 *  (4) "name2" is the destination/new pathname.
 *
 * Directives held by this structure are "allow_rename", "allow_link" and
 * "allow_pivot_root".
 */
struct tomoyo_path2_acl {
	struct tomoyo_acl_info head; /* type = TOMOYO_TYPE_PATH2_ACL */
	u8 perm;
	struct tomoyo_name_union name1;
	struct tomoyo_name_union name2;
};

/*
 * tomoyo_mount_acl is a structure which is used for holding an
 * entry for mount operation.
 * It has following fields.
 *
 *  (1) "head" which is a "struct tomoyo_acl_info".
 *  (2) "dev_name" is the device name.
 *  (3) "dir_name" is the mount point.
 *  (4) "fs_type" is the filesystem type.
 *  (5) "flags" is the mount flags.
 *
 * Directive held by this structure is "allow_mount".
 */
struct tomoyo_mount_acl {
	struct tomoyo_acl_info head; /* type = TOMOYO_TYPE_MOUNT_ACL */
	struct tomoyo_name_union dev_name;
	struct tomoyo_name_union dir_name;
	struct tomoyo_name_union fs_type;
	struct tomoyo_number_union flags;
};

/*
 * tomoyo_io_buffer is a structure which is used for reading and modifying
 * configuration via /sys/kernel/security/tomoyo/ interface.
 * It has many fields. ->read_var1 , ->read_var2 , ->write_var1 are used as
 * cursors.
 *
 * Since the content of /sys/kernel/security/tomoyo/domain_policy is a list of
 * "struct tomoyo_domain_info" entries and each "struct tomoyo_domain_info"
 * entry has a list of "struct tomoyo_acl_info", we need two cursors when
 * reading (one is for traversing tomoyo_domain_list and the other is for
 * traversing "struct tomoyo_acl_info"->acl_info_list ).
 *
 * If a line written to /sys/kernel/security/tomoyo/domain_policy starts with
 * "select ", TOMOYO seeks the cursor ->read_var1 and ->write_var1 to the
 * domain with the domainname specified by the rest of that line (NULL is set
 * if seek failed).
 * If a line written to /sys/kernel/security/tomoyo/domain_policy starts with
 * "delete ", TOMOYO deletes an entry or a domain specified by the rest of that
 * line (->write_var1 is set to NULL if a domain was deleted).
 * If a line written to /sys/kernel/security/tomoyo/domain_policy starts with
 * neither "select " nor "delete ", an entry or a domain specified by that line
 * is appended.
 */
struct tomoyo_io_buffer {
	int (*read) (struct tomoyo_io_buffer *);
	int (*write) (struct tomoyo_io_buffer *);
	int (*poll) (struct file *file, poll_table *wait);
	/* Exclusive lock for this structure.   */
	struct mutex io_sem;
	/* Index returned by tomoyo_read_lock(). */
	int reader_idx;
	/* The position currently reading from. */
	struct list_head *read_var1;
	/* Extra variables for reading.         */
	struct list_head *read_var2;
	/* The position currently writing to.   */
	struct tomoyo_domain_info *write_var1;
	/* The step for reading.                */
	int read_step;
	/* Buffer for reading.                  */
	char *read_buf;
	/* EOF flag for reading.                */
	bool read_eof;
	/* Read domain ACL of specified PID?    */
	bool read_single_domain;
	/* Extra variable for reading.          */
	u8 read_bit;
	/* Bytes available for reading.         */
	int read_avail;
	/* Size of read buffer.                 */
	int readbuf_size;
	/* Buffer for writing.                  */
	char *write_buf;
	/* Bytes available for writing.         */
	int write_avail;
	/* Size of write buffer.                */
	int writebuf_size;
	/* Type of this interface.              */
	u8 type;
};

/*
 * tomoyo_globally_readable_file_entry is a structure which is used for holding
 * "allow_read" entries.
 * It has following fields.
 *
 *  (1) "head" is "struct tomoyo_acl_head".
 *  (2) "filename" is a pathname which is allowed to open(O_RDONLY).
 */
struct tomoyo_globally_readable_file_entry {
	struct tomoyo_acl_head head;
	const struct tomoyo_path_info *filename;
};

/*
 * tomoyo_pattern_entry is a structure which is used for holding
 * "tomoyo_pattern_list" entries.
 * It has following fields.
 *
 *  (1) "head" is "struct tomoyo_acl_head".
 *  (2) "pattern" is a pathname pattern which is used for converting pathnames
 *      to pathname patterns during learning mode.
 */
struct tomoyo_pattern_entry {
	struct tomoyo_acl_head head;
	const struct tomoyo_path_info *pattern;
};

/*
 * tomoyo_no_rewrite_entry is a structure which is used for holding
 * "deny_rewrite" entries.
 * It has following fields.
 *
 *  (1) "head" is "struct tomoyo_acl_head".
 *  (2) "pattern" is a pathname which is by default not permitted to modify
 *      already existing content.
 */
struct tomoyo_no_rewrite_entry {
	struct tomoyo_acl_head head;
	const struct tomoyo_path_info *pattern;
};

/*
 * tomoyo_domain_initializer_entry is a structure which is used for holding
 * "initialize_domain" and "no_initialize_domain" entries.
 * It has following fields.
 *
 *  (1) "head" is "struct tomoyo_acl_head".
 *  (2) "is_not" is a bool which is true if "no_initialize_domain", false
 *      otherwise.
 *  (3) "is_last_name" is a bool which is true if "domainname" is "the last
 *      component of a domainname", false otherwise.
 *  (4) "domainname" which is "a domainname" or "the last component of a
 *      domainname". This field is NULL if "from" clause is not specified.
 *  (5) "program" which is a program's pathname.
 */
struct tomoyo_domain_initializer_entry {
	struct tomoyo_acl_head head;
	bool is_not;       /* True if this entry is "no_initialize_domain".  */
	/* True if the domainname is tomoyo_get_last_name(). */
	bool is_last_name;
	const struct tomoyo_path_info *domainname;    /* This may be NULL */
	const struct tomoyo_path_info *program;
};

/*
 * tomoyo_domain_keeper_entry is a structure which is used for holding
 * "keep_domain" and "no_keep_domain" entries.
 * It has following fields.
 *
 *  (1) "head" is "struct tomoyo_acl_head".
 *  (2) "is_not" is a bool which is true if "no_initialize_domain", false
 *      otherwise.
 *  (3) "is_last_name" is a bool which is true if "domainname" is "the last
 *      component of a domainname", false otherwise.
 *  (4) "domainname" which is "a domainname" or "the last component of a
 *      domainname".
 *  (5) "program" which is a program's pathname.
 *      This field is NULL if "from" clause is not specified.
 */
struct tomoyo_domain_keeper_entry {
	struct tomoyo_acl_head head;
	bool is_not;       /* True if this entry is "no_keep_domain".        */
	/* True if the domainname is tomoyo_get_last_name(). */
	bool is_last_name;
	const struct tomoyo_path_info *domainname;
	const struct tomoyo_path_info *program;       /* This may be NULL */
};

/*
 * tomoyo_aggregator_entry is a structure which is used for holding
 * "aggregator" entries.
 * It has following fields.
 *
 *  (1) "head" is "struct tomoyo_acl_head".
 *  (2) "original_name" which is originally requested name.
 *  (3) "aggregated_name" which is name to rewrite.
 */
struct tomoyo_aggregator_entry {
	struct tomoyo_acl_head head;
	const struct tomoyo_path_info *original_name;
	const struct tomoyo_path_info *aggregated_name;
};

/*
 * tomoyo_alias_entry is a structure which is used for holding "alias" entries.
 * It has following fields.
 *
 *  (1) "head" is "struct tomoyo_acl_head".
 *  (2) "original_name" which is a dereferenced pathname.
 *  (3) "aliased_name" which is a symlink's pathname.
 */
struct tomoyo_alias_entry {
	struct tomoyo_acl_head head;
	const struct tomoyo_path_info *original_name;
	const struct tomoyo_path_info *aliased_name;
};

/*
 * tomoyo_policy_manager_entry is a structure which is used for holding list of
 * domainnames or programs which are permitted to modify configuration via
 * /sys/kernel/security/tomoyo/ interface.
 * It has following fields.
 *
 *  (1) "head" is "struct tomoyo_acl_head".
 *  (2) "is_domain" is a bool which is true if "manager" is a domainname, false
 *      otherwise.
 *  (3) "manager" is a domainname or a program's pathname.
 */
struct tomoyo_policy_manager_entry {
	struct tomoyo_acl_head head;
	bool is_domain;  /* True if manager is a domainname. */
	/* A path to program or a domainname. */
	const struct tomoyo_path_info *manager;
};

struct tomoyo_preference {
	unsigned int learning_max_entry;
	bool enforcing_verbose;
	bool learning_verbose;
	bool permissive_verbose;
};

struct tomoyo_profile {
	const struct tomoyo_path_info *comment;
	struct tomoyo_preference *learning;
	struct tomoyo_preference *permissive;
	struct tomoyo_preference *enforcing;
	struct tomoyo_preference preference;
	u8 default_config;
	u8 config[TOMOYO_MAX_MAC_INDEX + TOMOYO_MAX_MAC_CATEGORY_INDEX];
};

/********** Function prototypes. **********/

extern asmlinkage long sys_getpid(void);
extern asmlinkage long sys_getppid(void);

/* Check whether the given string starts with the given keyword. */
bool tomoyo_str_starts(char **src, const char *find);
/* Get tomoyo_realpath() of current process. */
const char *tomoyo_get_exe(void);
/* Format string. */
void tomoyo_normalize_line(unsigned char *buffer);
/* Print warning or error message on console. */
void tomoyo_warn_log(struct tomoyo_request_info *r, const char *fmt, ...)
     __attribute__ ((format(printf, 2, 3)));
/* Check all profiles currently assigned to domains are defined. */
void tomoyo_check_profile(void);
/* Open operation for /sys/kernel/security/tomoyo/ interface. */
int tomoyo_open_control(const u8 type, struct file *file);
/* Close /sys/kernel/security/tomoyo/ interface. */
int tomoyo_close_control(struct file *file);
/* Read operation for /sys/kernel/security/tomoyo/ interface. */
int tomoyo_read_control(struct file *file, char __user *buffer,
			const int buffer_len);
/* Write operation for /sys/kernel/security/tomoyo/ interface. */
int tomoyo_write_control(struct file *file, const char __user *buffer,
			 const int buffer_len);
/* Check whether the domain has too many ACL entries to hold. */
bool tomoyo_domain_quota_is_ok(struct tomoyo_request_info *r);
/* Print out of memory warning message. */
void tomoyo_warn_oom(const char *function);
/* Check whether the given name matches the given name_union. */
bool tomoyo_compare_name_union(const struct tomoyo_path_info *name,
			       const struct tomoyo_name_union *ptr);
/* Check whether the given number matches the given number_union. */
bool tomoyo_compare_number_union(const unsigned long value,
				 const struct tomoyo_number_union *ptr);
int tomoyo_get_mode(const u8 profile, const u8 index);
/* Transactional sprintf() for policy dump. */
bool tomoyo_io_printf(struct tomoyo_io_buffer *head, const char *fmt, ...)
	__attribute__ ((format(printf, 2, 3)));
/* Check whether the domainname is correct. */
bool tomoyo_correct_domain(const unsigned char *domainname);
/* Check whether the token is correct. */
bool tomoyo_correct_path(const char *filename);
bool tomoyo_correct_word(const char *string);
/* Check whether the token can be a domainname. */
bool tomoyo_domain_def(const unsigned char *buffer);
bool tomoyo_parse_name_union(const char *filename,
			     struct tomoyo_name_union *ptr);
/* Check whether the given filename matches the given path_group. */
bool tomoyo_path_matches_group(const struct tomoyo_path_info *pathname,
			       const struct tomoyo_path_group *group);
/* Check whether the given value matches the given number_group. */
bool tomoyo_number_matches_group(const unsigned long min,
				 const unsigned long max,
				 const struct tomoyo_number_group *group);
/* Check whether the given filename matches the given pattern. */
bool tomoyo_path_matches_pattern(const struct tomoyo_path_info *filename,
				 const struct tomoyo_path_info *pattern);

bool tomoyo_print_number_union(struct tomoyo_io_buffer *head,
			       const struct tomoyo_number_union *ptr);
bool tomoyo_parse_number_union(char *data, struct tomoyo_number_union *num);

/* Read "aggregator" entry in exception policy. */
bool tomoyo_read_aggregator_policy(struct tomoyo_io_buffer *head);
/* Read "alias" entry in exception policy. */
bool tomoyo_read_alias_policy(struct tomoyo_io_buffer *head);
/*
 * Read "initialize_domain" and "no_initialize_domain" entry
 * in exception policy.
 */
bool tomoyo_read_domain_initializer_policy(struct tomoyo_io_buffer *head);
/* Read "keep_domain" and "no_keep_domain" entry in exception policy. */
bool tomoyo_read_domain_keeper_policy(struct tomoyo_io_buffer *head);
/* Read "file_pattern" entry in exception policy. */
bool tomoyo_read_file_pattern(struct tomoyo_io_buffer *head);
/* Read "path_group" entry in exception policy. */
bool tomoyo_read_path_group_policy(struct tomoyo_io_buffer *head);
/* Read "number_group" entry in exception policy. */
bool tomoyo_read_number_group_policy(struct tomoyo_io_buffer *head);
/* Read "allow_read" entry in exception policy. */
bool tomoyo_read_globally_readable_policy(struct tomoyo_io_buffer *head);
/* Read "deny_rewrite" entry in exception policy. */
bool tomoyo_read_no_rewrite_policy(struct tomoyo_io_buffer *head);
/* Tokenize a line. */
bool tomoyo_tokenize(char *buffer, char *w[], size_t size);
/* Write domain policy violation warning message to console? */
bool tomoyo_verbose_mode(const struct tomoyo_domain_info *domain);
/* Get the last component of the given domainname. */
const char *tomoyo_get_last_name(const struct tomoyo_domain_info *domain);
/* Fill "struct tomoyo_request_info". */
int tomoyo_init_request_info(struct tomoyo_request_info *r,
			     struct tomoyo_domain_info *domain,
			     const u8 index);
/* Check permission for mount operation. */
int tomoyo_mount_permission(char *dev_name, struct path *path, char *type,
			    unsigned long flags, void *data_page);
/* Create "aggregator" entry in exception policy. */
int tomoyo_write_aggregator_policy(char *data, const bool is_delete);
/* Create "alias" entry in exception policy. */
int tomoyo_write_alias_policy(char *data, const bool is_delete);
/*
 * Create "initialize_domain" and "no_initialize_domain" entry
 * in exception policy.
 */
int tomoyo_write_domain_initializer_policy(char *data, const bool is_not,
					   const bool is_delete);
/* Create "keep_domain" and "no_keep_domain" entry in exception policy. */
int tomoyo_write_domain_keeper_policy(char *data, const bool is_not,
				      const bool is_delete);
/*
 * Create "allow_read/write", "allow_execute", "allow_read", "allow_write",
 * "allow_create", "allow_unlink", "allow_mkdir", "allow_rmdir",
 * "allow_mkfifo", "allow_mksock", "allow_mkblock", "allow_mkchar",
 * "allow_truncate", "allow_symlink", "allow_rewrite", "allow_rename" and
 * "allow_link" entry in domain policy.
 */
int tomoyo_write_file_policy(char *data, struct tomoyo_domain_info *domain,
			     const bool is_delete);
/* Create "allow_read" entry in exception policy. */
int tomoyo_write_globally_readable_policy(char *data, const bool is_delete);
/* Create "allow_mount" entry in domain policy. */
int tomoyo_write_mount_policy(char *data, struct tomoyo_domain_info *domain,
			      const bool is_delete);
/* Create "deny_rewrite" entry in exception policy. */
int tomoyo_write_no_rewrite_policy(char *data, const bool is_delete);
/* Create "file_pattern" entry in exception policy. */
int tomoyo_write_pattern_policy(char *data, const bool is_delete);
/* Create "path_group" entry in exception policy. */
int tomoyo_write_path_group_policy(char *data, const bool is_delete);
int tomoyo_supervisor(struct tomoyo_request_info *r, const char *fmt, ...)
     __attribute__ ((format(printf, 2, 3)));
/* Create "number_group" entry in exception policy. */
int tomoyo_write_number_group_policy(char *data, const bool is_delete);
/* Find a domain by the given name. */
struct tomoyo_domain_info *tomoyo_find_domain(const char *domainname);
/* Find or create a domain by the given name. */
struct tomoyo_domain_info *tomoyo_find_or_assign_new_domain(const char *
							    domainname,
							    const u8 profile);
struct tomoyo_profile *tomoyo_profile(const u8 profile);
/* Allocate memory for "struct tomoyo_path_group". */
struct tomoyo_path_group *tomoyo_get_path_group(const char *group_name);
struct tomoyo_number_group *tomoyo_get_number_group(const char *group_name);

/* Check mode for specified functionality. */
unsigned int tomoyo_check_flags(const struct tomoyo_domain_info *domain,
				const u8 index);
/* Fill in "struct tomoyo_path_info" members. */
void tomoyo_fill_path_info(struct tomoyo_path_info *ptr);
/* Run policy loader when /sbin/init starts. */
void tomoyo_load_policy(const char *filename);

void tomoyo_put_number_union(struct tomoyo_number_union *ptr);

/* Convert binary string to ascii string. */
char *tomoyo_encode(const char *str);

/*
 * Returns realpath(3) of the given pathname but ignores chroot'ed root.
 * These functions use kzalloc(), so the caller must call kfree()
 * if these functions didn't return NULL.
 */
char *tomoyo_realpath(const char *pathname);
/*
 * Same with tomoyo_realpath() except that it doesn't follow the final symlink.
 */
char *tomoyo_realpath_nofollow(const char *pathname);
/* Same with tomoyo_realpath() except that the pathname is already solved. */
char *tomoyo_realpath_from_path(struct path *path);
/* Get patterned pathname. */
const char *tomoyo_file_pattern(const struct tomoyo_path_info *filename);

/* Check memory quota. */
bool tomoyo_memory_ok(void *ptr);
void *tomoyo_commit_ok(void *data, const unsigned int size);

/*
 * Keep the given name on the RAM.
 * The RAM is shared, so NEVER try to modify or kfree() the returned name.
 */
const struct tomoyo_path_info *tomoyo_get_name(const char *name);

/* Check for memory usage. */
int tomoyo_read_memory_counter(struct tomoyo_io_buffer *head);

/* Set memory quota. */
int tomoyo_write_memory_quota(struct tomoyo_io_buffer *head);

/* Initialize mm related code. */
void __init tomoyo_mm_init(void);
int tomoyo_path_permission(struct tomoyo_request_info *r, u8 operation,
			   const struct tomoyo_path_info *filename);
int tomoyo_check_open_permission(struct tomoyo_domain_info *domain,
				 struct path *path, const int flag);
int tomoyo_path_number_perm(const u8 operation, struct path *path,
			    unsigned long number);
int tomoyo_mkdev_perm(const u8 operation, struct path *path,
		      const unsigned int mode, unsigned int dev);
int tomoyo_path_perm(const u8 operation, struct path *path);
int tomoyo_path2_perm(const u8 operation, struct path *path1,
		      struct path *path2);
int tomoyo_find_next_domain(struct linux_binprm *bprm);

void tomoyo_print_ulong(char *buffer, const int buffer_len,
			const unsigned long value, const u8 type);

/* Drop refcount on tomoyo_name_union. */
void tomoyo_put_name_union(struct tomoyo_name_union *ptr);

/* Run garbage collector. */
void tomoyo_run_gc(void);

void tomoyo_memory_free(void *ptr);

int tomoyo_update_domain(struct tomoyo_acl_info *new_entry, const int size,
			 bool is_delete, struct tomoyo_domain_info *domain,
			 bool (*check_duplicate) (const struct tomoyo_acl_info
						  *,
						  const struct tomoyo_acl_info
						  *),
			 bool (*merge_duplicate) (struct tomoyo_acl_info *,
						  struct tomoyo_acl_info *,
						  const bool));
int tomoyo_update_policy(struct tomoyo_acl_head *new_entry, const int size,
			 bool is_delete, struct list_head *list,
			 bool (*check_duplicate) (const struct tomoyo_acl_head
						  *,
						  const struct tomoyo_acl_head
						  *));
void tomoyo_check_acl(struct tomoyo_request_info *r,
		      bool (*check_entry) (const struct tomoyo_request_info *,
					   const struct tomoyo_acl_info *));

/********** External variable definitions. **********/

/* Lock for GC. */
extern struct srcu_struct tomoyo_ss;

/* The list for "struct tomoyo_domain_info". */
extern struct list_head tomoyo_domain_list;

extern struct list_head tomoyo_path_group_list;
extern struct list_head tomoyo_number_group_list;
extern struct list_head tomoyo_domain_initializer_list;
extern struct list_head tomoyo_domain_keeper_list;
extern struct list_head tomoyo_aggregator_list;
extern struct list_head tomoyo_alias_list;
extern struct list_head tomoyo_globally_readable_list;
extern struct list_head tomoyo_pattern_list;
extern struct list_head tomoyo_no_rewrite_list;
extern struct list_head tomoyo_policy_manager_list;
extern struct list_head tomoyo_name_list[TOMOYO_MAX_HASH];

/* Lock for protecting policy. */
extern struct mutex tomoyo_policy_lock;

/* Has /sbin/init started? */
extern bool tomoyo_policy_loaded;

/* The kernel's domain. */
extern struct tomoyo_domain_info tomoyo_kernel_domain;

extern const char *tomoyo_path_keyword[TOMOYO_MAX_PATH_OPERATION];
extern const char *tomoyo_mkdev_keyword[TOMOYO_MAX_MKDEV_OPERATION];
extern const char *tomoyo_path2_keyword[TOMOYO_MAX_PATH2_OPERATION];
extern const char *tomoyo_path_number_keyword[TOMOYO_MAX_PATH_NUMBER_OPERATION];

extern unsigned int tomoyo_quota_for_query;
extern unsigned int tomoyo_query_memory_size;

/********** Inlined functions. **********/

static inline int tomoyo_read_lock(void)
{
	return srcu_read_lock(&tomoyo_ss);
}

static inline void tomoyo_read_unlock(int idx)
{
	srcu_read_unlock(&tomoyo_ss, idx);
}

/* strcmp() for "struct tomoyo_path_info" structure. */
static inline bool tomoyo_pathcmp(const struct tomoyo_path_info *a,
				  const struct tomoyo_path_info *b)
{
	return a->hash != b->hash || strcmp(a->name, b->name);
}

/**
 * tomoyo_valid - Check whether the character is a valid char.
 *
 * @c: The character to check.
 *
 * Returns true if @c is a valid character, false otherwise.
 */
static inline bool tomoyo_valid(const unsigned char c)
{
	return c > ' ' && c < 127;
}

/**
 * tomoyo_invalid - Check whether the character is an invalid char.
 *
 * @c: The character to check.
 *
 * Returns true if @c is an invalid character, false otherwise.
 */
static inline bool tomoyo_invalid(const unsigned char c)
{
	return c && (c <= ' ' || c >= 127);
}

static inline void tomoyo_put_name(const struct tomoyo_path_info *name)
{
	if (name) {
		struct tomoyo_name_entry *ptr =
			container_of(name, struct tomoyo_name_entry, entry);
		atomic_dec(&ptr->users);
	}
}

static inline void tomoyo_put_path_group(struct tomoyo_path_group *group)
{
	if (group)
		atomic_dec(&group->users);
}

static inline void tomoyo_put_number_group(struct tomoyo_number_group *group)
{
	if (group)
		atomic_dec(&group->users);
}

static inline struct tomoyo_domain_info *tomoyo_domain(void)
{
	return current_cred()->security;
}

static inline struct tomoyo_domain_info *tomoyo_real_domain(struct task_struct
							    *task)
{
	return task_cred_xxx(task, security);
}

static inline bool tomoyo_same_acl_head(const struct tomoyo_acl_info *p1,
					   const struct tomoyo_acl_info *p2)
{
	return p1->type == p2->type;
}

static inline bool tomoyo_same_name_union
(const struct tomoyo_name_union *p1, const struct tomoyo_name_union *p2)
{
	return p1->filename == p2->filename && p1->group == p2->group &&
		p1->is_group == p2->is_group;
}

static inline bool tomoyo_same_number_union
(const struct tomoyo_number_union *p1, const struct tomoyo_number_union *p2)
{
	return p1->values[0] == p2->values[0] && p1->values[1] == p2->values[1]
		&& p1->group == p2->group && p1->min_type == p2->min_type &&
		p1->max_type == p2->max_type && p1->is_group == p2->is_group;
}

/**
 * list_for_each_cookie - iterate over a list with cookie.
 * @pos:        the &struct list_head to use as a loop cursor.
 * @cookie:     the &struct list_head to use as a cookie.
 * @head:       the head for your list.
 *
 * Same with list_for_each_rcu() except that this primitive uses @cookie
 * so that we can continue iteration.
 * @cookie must be NULL when iteration starts, and @cookie will become
 * NULL when iteration finishes.
 */
#define list_for_each_cookie(pos, cookie, head)				\
	for (({ if (!cookie)						\
				     cookie = head; }),			\
		     pos = rcu_dereference((cookie)->next);		\
	     prefetch(pos->next), pos != (head) || ((cookie) = NULL);	\
	     (cookie) = pos, pos = rcu_dereference(pos->next))

#endif /* !defined(_SECURITY_TOMOYO_COMMON_H) */