Bootlin logo

Elixir Cross Referencer

   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
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
/* SPDX-License-Identifier: GPL-2.0 */
/*
 * security/tomoyo/common.h
 *
 * Header file for TOMOYO.
 *
 * Copyright (C) 2005-2011  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>
#include <linux/binfmts.h>
#include <linux/highmem.h>
#include <linux/net.h>
#include <linux/inet.h>
#include <linux/in.h>
#include <linux/in6.h>
#include <linux/un.h>
#include <net/sock.h>
#include <net/af_unix.h>
#include <net/ip.h>
#include <net/ipv6.h>
#include <net/udp.h>

/********** 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)

/*
 * TOMOYO checks only SOCK_STREAM, SOCK_DGRAM, SOCK_RAW, SOCK_SEQPACKET.
 * Therefore, we don't need SOCK_MAX.
 */
#define TOMOYO_SOCK_MAX 6

#define TOMOYO_EXEC_TMPSIZE     4096

/* Garbage collector is trying to kfree() this element. */
#define TOMOYO_GC_IN_PROGRESS -1

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

/* Group number is an integer between 0 and 255. */
#define TOMOYO_MAX_ACL_GROUPS 256

/* Index numbers for "struct tomoyo_condition". */
enum tomoyo_conditions_index {
	TOMOYO_TASK_UID,             /* current_uid()   */
	TOMOYO_TASK_EUID,            /* current_euid()  */
	TOMOYO_TASK_SUID,            /* current_suid()  */
	TOMOYO_TASK_FSUID,           /* current_fsuid() */
	TOMOYO_TASK_GID,             /* current_gid()   */
	TOMOYO_TASK_EGID,            /* current_egid()  */
	TOMOYO_TASK_SGID,            /* current_sgid()  */
	TOMOYO_TASK_FSGID,           /* current_fsgid() */
	TOMOYO_TASK_PID,             /* sys_getpid()   */
	TOMOYO_TASK_PPID,            /* sys_getppid()  */
	TOMOYO_EXEC_ARGC,            /* "struct linux_binprm *"->argc */
	TOMOYO_EXEC_ENVC,            /* "struct linux_binprm *"->envc */
	TOMOYO_TYPE_IS_SOCKET,       /* S_IFSOCK */
	TOMOYO_TYPE_IS_SYMLINK,      /* S_IFLNK */
	TOMOYO_TYPE_IS_FILE,         /* S_IFREG */
	TOMOYO_TYPE_IS_BLOCK_DEV,    /* S_IFBLK */
	TOMOYO_TYPE_IS_DIRECTORY,    /* S_IFDIR */
	TOMOYO_TYPE_IS_CHAR_DEV,     /* S_IFCHR */
	TOMOYO_TYPE_IS_FIFO,         /* S_IFIFO */
	TOMOYO_MODE_SETUID,          /* S_ISUID */
	TOMOYO_MODE_SETGID,          /* S_ISGID */
	TOMOYO_MODE_STICKY,          /* S_ISVTX */
	TOMOYO_MODE_OWNER_READ,      /* S_IRUSR */
	TOMOYO_MODE_OWNER_WRITE,     /* S_IWUSR */
	TOMOYO_MODE_OWNER_EXECUTE,   /* S_IXUSR */
	TOMOYO_MODE_GROUP_READ,      /* S_IRGRP */
	TOMOYO_MODE_GROUP_WRITE,     /* S_IWGRP */
	TOMOYO_MODE_GROUP_EXECUTE,   /* S_IXGRP */
	TOMOYO_MODE_OTHERS_READ,     /* S_IROTH */
	TOMOYO_MODE_OTHERS_WRITE,    /* S_IWOTH */
	TOMOYO_MODE_OTHERS_EXECUTE,  /* S_IXOTH */
	TOMOYO_EXEC_REALPATH,
	TOMOYO_SYMLINK_TARGET,
	TOMOYO_PATH1_UID,
	TOMOYO_PATH1_GID,
	TOMOYO_PATH1_INO,
	TOMOYO_PATH1_MAJOR,
	TOMOYO_PATH1_MINOR,
	TOMOYO_PATH1_PERM,
	TOMOYO_PATH1_TYPE,
	TOMOYO_PATH1_DEV_MAJOR,
	TOMOYO_PATH1_DEV_MINOR,
	TOMOYO_PATH2_UID,
	TOMOYO_PATH2_GID,
	TOMOYO_PATH2_INO,
	TOMOYO_PATH2_MAJOR,
	TOMOYO_PATH2_MINOR,
	TOMOYO_PATH2_PERM,
	TOMOYO_PATH2_TYPE,
	TOMOYO_PATH2_DEV_MAJOR,
	TOMOYO_PATH2_DEV_MINOR,
	TOMOYO_PATH1_PARENT_UID,
	TOMOYO_PATH1_PARENT_GID,
	TOMOYO_PATH1_PARENT_INO,
	TOMOYO_PATH1_PARENT_PERM,
	TOMOYO_PATH2_PARENT_UID,
	TOMOYO_PATH2_PARENT_GID,
	TOMOYO_PATH2_PARENT_INO,
	TOMOYO_PATH2_PARENT_PERM,
	TOMOYO_MAX_CONDITION_KEYWORD,
	TOMOYO_NUMBER_UNION,
	TOMOYO_NAME_UNION,
	TOMOYO_ARGV_ENTRY,
	TOMOYO_ENVP_ENTRY,
};


/* Index numbers for stat(). */
enum tomoyo_path_stat_index {
	/* Do not change this order. */
	TOMOYO_PATH1,
	TOMOYO_PATH1_PARENT,
	TOMOYO_PATH2,
	TOMOYO_PATH2_PARENT,
	TOMOYO_MAX_PATH_STAT
};

/* Index numbers for operation mode. */
enum tomoyo_mode_index {
	TOMOYO_CONFIG_DISABLED,
	TOMOYO_CONFIG_LEARNING,
	TOMOYO_CONFIG_PERMISSIVE,
	TOMOYO_CONFIG_ENFORCING,
	TOMOYO_CONFIG_MAX_MODE,
	TOMOYO_CONFIG_WANT_REJECT_LOG =  64,
	TOMOYO_CONFIG_WANT_GRANT_LOG  = 128,
	TOMOYO_CONFIG_USE_DEFAULT     = 255,
};

/* Index numbers for entry type. */
enum tomoyo_policy_id {
	TOMOYO_ID_GROUP,
	TOMOYO_ID_ADDRESS_GROUP,
	TOMOYO_ID_PATH_GROUP,
	TOMOYO_ID_NUMBER_GROUP,
	TOMOYO_ID_TRANSITION_CONTROL,
	TOMOYO_ID_AGGREGATOR,
	TOMOYO_ID_MANAGER,
	TOMOYO_ID_CONDITION,
	TOMOYO_ID_NAME,
	TOMOYO_ID_ACL,
	TOMOYO_ID_DOMAIN,
	TOMOYO_MAX_POLICY
};

/* Index numbers for domain's attributes. */
enum tomoyo_domain_info_flags_index {
	/* Quota warnning flag.   */
	TOMOYO_DIF_QUOTA_WARNED,
	/*
	 * 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.
	 * More than one process continued execve() without domain transition.
	 */
	TOMOYO_DIF_TRANSITION_FAILED,
	TOMOYO_MAX_DOMAIN_INFO_FLAGS
};

/* Index numbers for audit type. */
enum tomoyo_grant_log {
	/* Follow profile's configuration. */
	TOMOYO_GRANTLOG_AUTO,
	/* Do not generate grant log. */
	TOMOYO_GRANTLOG_NO,
	/* Generate grant_log. */
	TOMOYO_GRANTLOG_YES,
};

/* Index numbers for group entries. */
enum tomoyo_group_id {
	TOMOYO_PATH_GROUP,
	TOMOYO_NUMBER_GROUP,
	TOMOYO_ADDRESS_GROUP,
	TOMOYO_MAX_GROUP
};

/* Index numbers for type of numeric values. */
enum tomoyo_value_type {
	TOMOYO_VALUE_TYPE_INVALID,
	TOMOYO_VALUE_TYPE_DECIMAL,
	TOMOYO_VALUE_TYPE_OCTAL,
	TOMOYO_VALUE_TYPE_HEXADECIMAL,
};

/* Index numbers for domain transition control keywords. */
enum tomoyo_transition_type {
	/* Do not change this order, */
	TOMOYO_TRANSITION_CONTROL_NO_RESET,
	TOMOYO_TRANSITION_CONTROL_RESET,
	TOMOYO_TRANSITION_CONTROL_NO_INITIALIZE,
	TOMOYO_TRANSITION_CONTROL_INITIALIZE,
	TOMOYO_TRANSITION_CONTROL_NO_KEEP,
	TOMOYO_TRANSITION_CONTROL_KEEP,
	TOMOYO_MAX_TRANSITION_TYPE
};

/* 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,
	TOMOYO_TYPE_INET_ACL,
	TOMOYO_TYPE_UNIX_ACL,
	TOMOYO_TYPE_ENV_ACL,
	TOMOYO_TYPE_MANUAL_TASK_ACL,
};

/* Index numbers for access controls with one pathname. */
enum tomoyo_path_acl_index {
	TOMOYO_TYPE_EXECUTE,
	TOMOYO_TYPE_READ,
	TOMOYO_TYPE_WRITE,
	TOMOYO_TYPE_APPEND,
	TOMOYO_TYPE_UNLINK,
	TOMOYO_TYPE_GETATTR,
	TOMOYO_TYPE_RMDIR,
	TOMOYO_TYPE_TRUNCATE,
	TOMOYO_TYPE_SYMLINK,
	TOMOYO_TYPE_CHROOT,
	TOMOYO_TYPE_UMOUNT,
	TOMOYO_MAX_PATH_OPERATION
};

/* Index numbers for /sys/kernel/security/tomoyo/stat interface. */
enum tomoyo_memory_stat_type {
	TOMOYO_MEMORY_POLICY,
	TOMOYO_MEMORY_AUDIT,
	TOMOYO_MEMORY_QUERY,
	TOMOYO_MAX_MEMORY_STAT
};

enum tomoyo_mkdev_acl_index {
	TOMOYO_TYPE_MKBLOCK,
	TOMOYO_TYPE_MKCHAR,
	TOMOYO_MAX_MKDEV_OPERATION
};

/* Index numbers for socket operations. */
enum tomoyo_network_acl_index {
	TOMOYO_NETWORK_BIND,    /* bind() operation. */
	TOMOYO_NETWORK_LISTEN,  /* listen() operation. */
	TOMOYO_NETWORK_CONNECT, /* connect() operation. */
	TOMOYO_NETWORK_SEND,    /* send() operation. */
	TOMOYO_MAX_NETWORK_OPERATION
};

/* Index numbers for access controls with two pathnames. */
enum tomoyo_path2_acl_index {
	TOMOYO_TYPE_LINK,
	TOMOYO_TYPE_RENAME,
	TOMOYO_TYPE_PIVOT_ROOT,
	TOMOYO_MAX_PATH2_OPERATION
};

/* Index numbers for access controls with one pathname and one number. */
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
};

/* Index numbers for /sys/kernel/security/tomoyo/ interfaces. */
enum tomoyo_securityfs_interface_index {
	TOMOYO_DOMAINPOLICY,
	TOMOYO_EXCEPTIONPOLICY,
	TOMOYO_PROCESS_STATUS,
	TOMOYO_STAT,
	TOMOYO_AUDIT,
	TOMOYO_VERSION,
	TOMOYO_PROFILE,
	TOMOYO_QUERY,
	TOMOYO_MANAGER
};

/* Index numbers for special mount operations. */
enum tomoyo_special_mount {
	TOMOYO_MOUNT_BIND,            /* mount --bind /source /dest   */
	TOMOYO_MOUNT_MOVE,            /* mount --move /old /new       */
	TOMOYO_MOUNT_REMOUNT,         /* mount -o remount /dir        */
	TOMOYO_MOUNT_MAKE_UNBINDABLE, /* mount --make-unbindable /dir */
	TOMOYO_MOUNT_MAKE_PRIVATE,    /* mount --make-private /dir    */
	TOMOYO_MOUNT_MAKE_SLAVE,      /* mount --make-slave /dir      */
	TOMOYO_MOUNT_MAKE_SHARED,     /* mount --make-shared /dir     */
	TOMOYO_MAX_SPECIAL_MOUNT
};

/* Index numbers for functionality. */
enum tomoyo_mac_index {
	TOMOYO_MAC_FILE_EXECUTE,
	TOMOYO_MAC_FILE_OPEN,
	TOMOYO_MAC_FILE_CREATE,
	TOMOYO_MAC_FILE_UNLINK,
	TOMOYO_MAC_FILE_GETATTR,
	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_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_MAC_NETWORK_INET_STREAM_BIND,
	TOMOYO_MAC_NETWORK_INET_STREAM_LISTEN,
	TOMOYO_MAC_NETWORK_INET_STREAM_CONNECT,
	TOMOYO_MAC_NETWORK_INET_DGRAM_BIND,
	TOMOYO_MAC_NETWORK_INET_DGRAM_SEND,
	TOMOYO_MAC_NETWORK_INET_RAW_BIND,
	TOMOYO_MAC_NETWORK_INET_RAW_SEND,
	TOMOYO_MAC_NETWORK_UNIX_STREAM_BIND,
	TOMOYO_MAC_NETWORK_UNIX_STREAM_LISTEN,
	TOMOYO_MAC_NETWORK_UNIX_STREAM_CONNECT,
	TOMOYO_MAC_NETWORK_UNIX_DGRAM_BIND,
	TOMOYO_MAC_NETWORK_UNIX_DGRAM_SEND,
	TOMOYO_MAC_NETWORK_UNIX_SEQPACKET_BIND,
	TOMOYO_MAC_NETWORK_UNIX_SEQPACKET_LISTEN,
	TOMOYO_MAC_NETWORK_UNIX_SEQPACKET_CONNECT,
	TOMOYO_MAC_ENVIRON,
	TOMOYO_MAX_MAC_INDEX
};

/* Index numbers for category of functionality. */
enum tomoyo_mac_category_index {
	TOMOYO_MAC_CATEGORY_FILE,
	TOMOYO_MAC_CATEGORY_NETWORK,
	TOMOYO_MAC_CATEGORY_MISC,
	TOMOYO_MAX_MAC_CATEGORY_INDEX
};

/*
 * Retry this request. Returned by tomoyo_supervisor() if policy violation has
 * occurred in enforcing mode and the userspace daemon decided to retry.
 *
 * We must choose a positive value in order to distinguish "granted" (which is
 * 0) and "rejected" (which is a negative value) and "retry".
 */
#define TOMOYO_RETRY_REQUEST 1

/* Index numbers for /sys/kernel/security/tomoyo/stat interface. */
enum tomoyo_policy_stat_type {
	/* Do not change this order. */
	TOMOYO_STAT_POLICY_UPDATES,
	TOMOYO_STAT_POLICY_LEARNING,   /* == TOMOYO_CONFIG_LEARNING */
	TOMOYO_STAT_POLICY_PERMISSIVE, /* == TOMOYO_CONFIG_PERMISSIVE */
	TOMOYO_STAT_POLICY_ENFORCING,  /* == TOMOYO_CONFIG_ENFORCING */
	TOMOYO_MAX_POLICY_STAT
};

/* Index numbers for profile's PREFERENCE values. */
enum tomoyo_pref_index {
	TOMOYO_PREF_MAX_AUDIT_LOG,
	TOMOYO_PREF_MAX_LEARNING_ENTRY,
	TOMOYO_MAX_PREF
};

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

/* Common header for holding ACL entries. */
struct tomoyo_acl_head {
	struct list_head list;
	s8 is_deleted; /* true or false or TOMOYO_GC_IN_PROGRESS */
} __packed;

/* Common header for shared entries. */
struct tomoyo_shared_acl_head {
	struct list_head list;
	atomic_t users;
} __packed;

struct tomoyo_policy_namespace;

/* Structure for request info. */
struct tomoyo_request_info {
	/*
	 * For holding parameters specific to operations which deal files.
	 * NULL if not dealing files.
	 */
	struct tomoyo_obj_info *obj;
	/*
	 * For holding parameters specific to execve() request.
	 * NULL if not dealing do_execve().
	 */
	struct tomoyo_execve *ee;
	struct tomoyo_domain_info *domain;
	/* For holding parameters. */
	union {
		struct {
			const struct tomoyo_path_info *filename;
			/* For using wildcards at tomoyo_find_next_domain(). */
			const struct tomoyo_path_info *matched_path;
			/* One of values in "enum tomoyo_path_acl_index". */
			u8 operation;
		} path;
		struct {
			const struct tomoyo_path_info *filename1;
			const struct tomoyo_path_info *filename2;
			/* One of values in "enum tomoyo_path2_acl_index". */
			u8 operation;
		} path2;
		struct {
			const struct tomoyo_path_info *filename;
			unsigned int mode;
			unsigned int major;
			unsigned int minor;
			/* One of values in "enum tomoyo_mkdev_acl_index". */
			u8 operation;
		} mkdev;
		struct {
			const struct tomoyo_path_info *filename;
			unsigned long number;
			/*
			 * One of values in
			 * "enum tomoyo_path_number_acl_index".
			 */
			u8 operation;
		} path_number;
		struct {
			const struct tomoyo_path_info *name;
		} environ;
		struct {
			const __be32 *address;
			u16 port;
			/* One of values smaller than TOMOYO_SOCK_MAX. */
			u8 protocol;
			/* One of values in "enum tomoyo_network_acl_index". */
			u8 operation;
			bool is_ipv6;
		} inet_network;
		struct {
			const struct tomoyo_path_info *address;
			/* One of values smaller than TOMOYO_SOCK_MAX. */
			u8 protocol;
			/* One of values in "enum tomoyo_network_acl_index". */
			u8 operation;
		} unix_network;
		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;
		struct {
			const struct tomoyo_path_info *domainname;
		} task;
	} param;
	struct tomoyo_acl_info *matched_acl;
	u8 param_type;
	bool granted;
	u8 retry;
	u8 profile;
	u8 mode; /* One of tomoyo_mode_index . */
	u8 type;
};

/* Structure for holding a token. */
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) */
};

/* Structure for holding string data. */
struct tomoyo_name {
	struct tomoyo_shared_acl_head head;
	struct tomoyo_path_info entry;
};

/* Structure for holding a word. */
struct tomoyo_name_union {
	/* Either @filename or @group is NULL. */
	const struct tomoyo_path_info *filename;
	struct tomoyo_group *group;
};

/* Structure for holding a number. */
struct tomoyo_number_union {
	unsigned long values[2];
	struct tomoyo_group *group; /* Maybe NULL. */
	/* One of values in "enum tomoyo_value_type". */
	u8 value_type[2];
};

/* Structure for holding an IP address. */
struct tomoyo_ipaddr_union {
	struct in6_addr ip[2]; /* Big endian. */
	struct tomoyo_group *group; /* Pointer to address group. */
	bool is_ipv6; /* Valid only if @group == NULL. */
};

/* Structure for "path_group"/"number_group"/"address_group" directive. */
struct tomoyo_group {
	struct tomoyo_shared_acl_head head;
	const struct tomoyo_path_info *group_name;
	struct list_head member_list;
};

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

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

/* Structure for "address_group" directive. */
struct tomoyo_address_group {
	struct tomoyo_acl_head head;
	/* Structure for holding an IP address. */
	struct tomoyo_ipaddr_union address;
};

/* Subset of "struct stat". Used by conditional ACL and audit logs. */
struct tomoyo_mini_stat {
	kuid_t uid;
	kgid_t gid;
	ino_t ino;
	umode_t mode;
	dev_t dev;
	dev_t rdev;
};

/* Structure for dumping argv[] and envp[] of "struct linux_binprm". */
struct tomoyo_page_dump {
	struct page *page;    /* Previously dumped page. */
	char *data;           /* Contents of "page". Size is PAGE_SIZE. */
};

/* Structure for attribute checks in addition to pathname checks. */
struct tomoyo_obj_info {
	/*
	 * True if tomoyo_get_attributes() was already called, false otherwise.
	 */
	bool validate_done;
	/* True if @stat[] is valid. */
	bool stat_valid[TOMOYO_MAX_PATH_STAT];
	/* First pathname. Initialized with { NULL, NULL } if no path. */
	struct path path1;
	/* Second pathname. Initialized with { NULL, NULL } if no path. */
	struct path path2;
	/*
	 * Information on @path1, @path1's parent directory, @path2, @path2's
	 * parent directory.
	 */
	struct tomoyo_mini_stat stat[TOMOYO_MAX_PATH_STAT];
	/*
	 * Content of symbolic link to be created. NULL for operations other
	 * than symlink().
	 */
	struct tomoyo_path_info *symlink_target;
};

/* Structure for argv[]. */
struct tomoyo_argv {
	unsigned long index;
	const struct tomoyo_path_info *value;
	bool is_not;
};

/* Structure for envp[]. */
struct tomoyo_envp {
	const struct tomoyo_path_info *name;
	const struct tomoyo_path_info *value;
	bool is_not;
};

/* Structure for execve() operation. */
struct tomoyo_execve {
	struct tomoyo_request_info r;
	struct tomoyo_obj_info obj;
	struct linux_binprm *bprm;
	const struct tomoyo_path_info *transition;
	/* For dumping argv[] and envp[]. */
	struct tomoyo_page_dump dump;
	/* For temporary use. */
	char *tmp; /* Size is TOMOYO_EXEC_TMPSIZE bytes */
};

/* Structure for entries which follows "struct tomoyo_condition". */
struct tomoyo_condition_element {
	/*
	 * Left hand operand. A "struct tomoyo_argv" for TOMOYO_ARGV_ENTRY, a
	 * "struct tomoyo_envp" for TOMOYO_ENVP_ENTRY is attached to the tail
	 * of the array of this struct.
	 */
	u8 left;
	/*
	 * Right hand operand. A "struct tomoyo_number_union" for
	 * TOMOYO_NUMBER_UNION, a "struct tomoyo_name_union" for
	 * TOMOYO_NAME_UNION is attached to the tail of the array of this
	 * struct.
	 */
	u8 right;
	/* Equation operator. True if equals or overlaps, false otherwise. */
	bool equals;
};

/* Structure for optional arguments. */
struct tomoyo_condition {
	struct tomoyo_shared_acl_head head;
	u32 size; /* Memory size allocated for this entry. */
	u16 condc; /* Number of conditions in this struct. */
	u16 numbers_count; /* Number of "struct tomoyo_number_union values". */
	u16 names_count; /* Number of "struct tomoyo_name_union names". */
	u16 argc; /* Number of "struct tomoyo_argv". */
	u16 envc; /* Number of "struct tomoyo_envp". */
	u8 grant_log; /* One of values in "enum tomoyo_grant_log". */
	const struct tomoyo_path_info *transit; /* Maybe NULL. */
	/*
	 * struct tomoyo_condition_element condition[condc];
	 * struct tomoyo_number_union values[numbers_count];
	 * struct tomoyo_name_union names[names_count];
	 * struct tomoyo_argv argv[argc];
	 * struct tomoyo_envp envp[envc];
	 */
};

/* Common header for individual entries. */
struct tomoyo_acl_info {
	struct list_head list;
	struct tomoyo_condition *cond; /* Maybe NULL. */
	s8 is_deleted; /* true or false or TOMOYO_GC_IN_PROGRESS */
	u8 type; /* One of values in "enum tomoyo_acl_entry_type_index". */
} __packed;

/* Structure for domain information. */
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;
	/* Namespace for this domain. Never NULL. */
	struct tomoyo_policy_namespace *ns;
	u8 profile;        /* Profile number to use. */
	u8 group;          /* Group number to use.   */
	bool is_deleted;   /* Delete flag.           */
	bool flags[TOMOYO_MAX_DOMAIN_INFO_FLAGS];
	atomic_t users; /* Number of referring credentials. */
};

/*
 * Structure for "task manual_domain_transition" directive.
 */
struct tomoyo_task_acl {
	struct tomoyo_acl_info head; /* type = TOMOYO_TYPE_MANUAL_TASK_ACL */
	/* Pointer to domainname. */
	const struct tomoyo_path_info *domainname;
};

/*
 * Structure for "file execute", "file read", "file write", "file append",
 * "file unlink", "file getattr", "file rmdir", "file truncate",
 * "file symlink", "file chroot" and "file unmount" directive.
 */
struct tomoyo_path_acl {
	struct tomoyo_acl_info head; /* type = TOMOYO_TYPE_PATH_ACL */
	u16 perm; /* Bitmask of values in "enum tomoyo_path_acl_index". */
	struct tomoyo_name_union name;
};

/*
 * Structure for "file create", "file mkdir", "file mkfifo", "file mksock",
 * "file ioctl", "file chmod", "file chown" and "file chgrp" directive.
 */
struct tomoyo_path_number_acl {
	struct tomoyo_acl_info head; /* type = TOMOYO_TYPE_PATH_NUMBER_ACL */
	/* Bitmask of values in "enum tomoyo_path_number_acl_index". */
	u8 perm;
	struct tomoyo_name_union name;
	struct tomoyo_number_union number;
};

/* Structure for "file mkblock" and "file mkchar" directive. */
struct tomoyo_mkdev_acl {
	struct tomoyo_acl_info head; /* type = TOMOYO_TYPE_MKDEV_ACL */
	u8 perm; /* Bitmask of values in "enum tomoyo_mkdev_acl_index". */
	struct tomoyo_name_union name;
	struct tomoyo_number_union mode;
	struct tomoyo_number_union major;
	struct tomoyo_number_union minor;
};

/*
 * Structure for "file rename", "file link" and "file pivot_root" directive.
 */
struct tomoyo_path2_acl {
	struct tomoyo_acl_info head; /* type = TOMOYO_TYPE_PATH2_ACL */
	u8 perm; /* Bitmask of values in "enum tomoyo_path2_acl_index". */
	struct tomoyo_name_union name1;
	struct tomoyo_name_union name2;
};

/* Structure for "file mount" directive. */
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;
};

/* Structure for "misc env" directive in domain policy. */
struct tomoyo_env_acl {
	struct tomoyo_acl_info head;        /* type = TOMOYO_TYPE_ENV_ACL  */
	const struct tomoyo_path_info *env; /* environment variable */
};

/* Structure for "network inet" directive. */
struct tomoyo_inet_acl {
	struct tomoyo_acl_info head; /* type = TOMOYO_TYPE_INET_ACL */
	u8 protocol;
	u8 perm; /* Bitmask of values in "enum tomoyo_network_acl_index" */
	struct tomoyo_ipaddr_union address;
	struct tomoyo_number_union port;
};

/* Structure for "network unix" directive. */
struct tomoyo_unix_acl {
	struct tomoyo_acl_info head; /* type = TOMOYO_TYPE_UNIX_ACL */
	u8 protocol;
	u8 perm; /* Bitmask of values in "enum tomoyo_network_acl_index" */
	struct tomoyo_name_union name;
};

/* Structure for holding a line from /sys/kernel/security/tomoyo/ interface. */
struct tomoyo_acl_param {
	char *data;
	struct list_head *list;
	struct tomoyo_policy_namespace *ns;
	bool is_delete;
};

#define TOMOYO_MAX_IO_READ_QUEUE 64

/*
 * Structure for reading/writing policy via /sys/kernel/security/tomoyo
 * interfaces.
 */
struct tomoyo_io_buffer {
	void (*read) (struct tomoyo_io_buffer *);
	int (*write) (struct tomoyo_io_buffer *);
	__poll_t (*poll) (struct file *file, poll_table *wait);
	/* Exclusive lock for this structure.   */
	struct mutex io_sem;
	char __user *read_user_buf;
	size_t read_user_buf_avail;
	struct {
		struct list_head *ns;
		struct list_head *domain;
		struct list_head *group;
		struct list_head *acl;
		size_t avail;
		unsigned int step;
		unsigned int query_index;
		u16 index;
		u16 cond_index;
		u8 acl_group_index;
		u8 cond_step;
		u8 bit;
		u8 w_pos;
		bool eof;
		bool print_this_domain_only;
		bool print_transition_related_only;
		bool print_cond_part;
		const char *w[TOMOYO_MAX_IO_READ_QUEUE];
	} r;
	struct {
		struct tomoyo_policy_namespace *ns;
		/* The position currently writing to.   */
		struct tomoyo_domain_info *domain;
		/* Bytes available for writing.         */
		size_t avail;
		bool is_delete;
	} w;
	/* Buffer for reading.                  */
	char *read_buf;
	/* Size of read buffer.                 */
	size_t readbuf_size;
	/* Buffer for writing.                  */
	char *write_buf;
	/* Size of write buffer.                */
	size_t writebuf_size;
	/* Type of this interface.              */
	enum tomoyo_securityfs_interface_index type;
	/* Users counter protected by tomoyo_io_buffer_list_lock. */
	u8 users;
	/* List for telling GC not to kfree() elements. */
	struct list_head list;
};

/*
 * Structure for "initialize_domain"/"no_initialize_domain"/"keep_domain"/
 * "no_keep_domain" keyword.
 */
struct tomoyo_transition_control {
	struct tomoyo_acl_head head;
	u8 type; /* One of values in "enum tomoyo_transition_type".  */
	/* True if the domainname is tomoyo_get_last_name(). */
	bool is_last_name;
	const struct tomoyo_path_info *domainname; /* Maybe NULL */
	const struct tomoyo_path_info *program;    /* Maybe NULL */
};

/* Structure for "aggregator" keyword. */
struct tomoyo_aggregator {
	struct tomoyo_acl_head head;
	const struct tomoyo_path_info *original_name;
	const struct tomoyo_path_info *aggregated_name;
};

/* Structure for policy manager. */
struct tomoyo_manager {
	struct tomoyo_acl_head head;
	/* 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;
};

/* Structure for /sys/kernel/security/tomnoyo/profile interface. */
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];
	unsigned int pref[TOMOYO_MAX_PREF];
};

/* Structure for representing YYYY/MM/DD hh/mm/ss. */
struct tomoyo_time {
	u16 year;
	u8 month;
	u8 day;
	u8 hour;
	u8 min;
	u8 sec;
};

/* Structure for policy namespace. */
struct tomoyo_policy_namespace {
	/* Profile table. Memory is allocated as needed. */
	struct tomoyo_profile *profile_ptr[TOMOYO_MAX_PROFILES];
	/* List of "struct tomoyo_group". */
	struct list_head group_list[TOMOYO_MAX_GROUP];
	/* List of policy. */
	struct list_head policy_list[TOMOYO_MAX_POLICY];
	/* The global ACL referred by "use_group" keyword. */
	struct list_head acl_group[TOMOYO_MAX_ACL_GROUPS];
	/* List for connecting to tomoyo_namespace_list list. */
	struct list_head namespace_list;
	/* Profile version. Currently only 20110903 is defined. */
	unsigned int profile_version;
	/* Name of this namespace (e.g. "<kernel>", "</usr/sbin/httpd>" ). */
	const char *name;
};

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

bool tomoyo_address_matches_group(const bool is_ipv6, const __be32 *address,
				  const struct tomoyo_group *group);
bool tomoyo_compare_number_union(const unsigned long value,
				 const struct tomoyo_number_union *ptr);
bool tomoyo_condition(struct tomoyo_request_info *r,
		      const struct tomoyo_condition *cond);
bool tomoyo_correct_domain(const unsigned char *domainname);
bool tomoyo_correct_path(const char *filename);
bool tomoyo_correct_word(const char *string);
bool tomoyo_domain_def(const unsigned char *buffer);
bool tomoyo_domain_quota_is_ok(struct tomoyo_request_info *r);
bool tomoyo_dump_page(struct linux_binprm *bprm, unsigned long pos,
		      struct tomoyo_page_dump *dump);
bool tomoyo_memory_ok(void *ptr);
bool tomoyo_number_matches_group(const unsigned long min,
				 const unsigned long max,
				 const struct tomoyo_group *group);
bool tomoyo_parse_ipaddr_union(struct tomoyo_acl_param *param,
			       struct tomoyo_ipaddr_union *ptr);
bool tomoyo_parse_name_union(struct tomoyo_acl_param *param,
			     struct tomoyo_name_union *ptr);
bool tomoyo_parse_number_union(struct tomoyo_acl_param *param,
			       struct tomoyo_number_union *ptr);
bool tomoyo_path_matches_pattern(const struct tomoyo_path_info *filename,
				 const struct tomoyo_path_info *pattern);
bool tomoyo_permstr(const char *string, const char *keyword);
bool tomoyo_str_starts(char **src, const char *find);
char *tomoyo_encode(const char *str);
char *tomoyo_encode2(const char *str, int str_len);
char *tomoyo_init_log(struct tomoyo_request_info *r, int len, const char *fmt,
		      va_list args);
char *tomoyo_read_token(struct tomoyo_acl_param *param);
char *tomoyo_realpath_from_path(const struct path *path);
char *tomoyo_realpath_nofollow(const char *pathname);
const char *tomoyo_get_exe(void);
const char *tomoyo_yesno(const unsigned int value);
const struct tomoyo_path_info *tomoyo_compare_name_union
(const struct tomoyo_path_info *name, const struct tomoyo_name_union *ptr);
const struct tomoyo_path_info *tomoyo_get_domainname
(struct tomoyo_acl_param *param);
const struct tomoyo_path_info *tomoyo_get_name(const char *name);
const struct tomoyo_path_info *tomoyo_path_matches_group
(const struct tomoyo_path_info *pathname, const struct tomoyo_group *group);
int tomoyo_check_open_permission(struct tomoyo_domain_info *domain,
				 const struct path *path, const int flag);
void tomoyo_close_control(struct tomoyo_io_buffer *head);
int tomoyo_env_perm(struct tomoyo_request_info *r, const char *env);
int tomoyo_execute_permission(struct tomoyo_request_info *r,
			      const struct tomoyo_path_info *filename);
int tomoyo_find_next_domain(struct linux_binprm *bprm);
int tomoyo_get_mode(const struct tomoyo_policy_namespace *ns, const u8 profile,
		    const u8 index);
int tomoyo_init_request_info(struct tomoyo_request_info *r,
			     struct tomoyo_domain_info *domain,
			     const u8 index);
int tomoyo_mkdev_perm(const u8 operation, const struct path *path,
		      const unsigned int mode, unsigned int dev);
int tomoyo_mount_permission(const char *dev_name, const struct path *path,
			    const char *type, unsigned long flags,
			    void *data_page);
int tomoyo_open_control(const u8 type, struct file *file);
int tomoyo_path2_perm(const u8 operation, const struct path *path1,
		      const struct path *path2);
int tomoyo_path_number_perm(const u8 operation, const struct path *path,
			    unsigned long number);
int tomoyo_path_perm(const u8 operation, const struct path *path,
		     const char *target);
__poll_t tomoyo_poll_control(struct file *file, poll_table *wait);
__poll_t tomoyo_poll_log(struct file *file, poll_table *wait);
int tomoyo_socket_bind_permission(struct socket *sock, struct sockaddr *addr,
				  int addr_len);
int tomoyo_socket_connect_permission(struct socket *sock,
				     struct sockaddr *addr, int addr_len);
int tomoyo_socket_listen_permission(struct socket *sock);
int tomoyo_socket_sendmsg_permission(struct socket *sock, struct msghdr *msg,
				     int size);
int tomoyo_supervisor(struct tomoyo_request_info *r, const char *fmt, ...)
	__printf(2, 3);
int tomoyo_update_domain(struct tomoyo_acl_info *new_entry, const int size,
			 struct tomoyo_acl_param *param,
			 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,
			 struct tomoyo_acl_param *param,
			 bool (*check_duplicate)
			 (const struct tomoyo_acl_head *,
			  const struct tomoyo_acl_head *));
int tomoyo_write_aggregator(struct tomoyo_acl_param *param);
int tomoyo_write_file(struct tomoyo_acl_param *param);
int tomoyo_write_group(struct tomoyo_acl_param *param, const u8 type);
int tomoyo_write_misc(struct tomoyo_acl_param *param);
int tomoyo_write_inet_network(struct tomoyo_acl_param *param);
int tomoyo_write_transition_control(struct tomoyo_acl_param *param,
				    const u8 type);
int tomoyo_write_unix_network(struct tomoyo_acl_param *param);
ssize_t tomoyo_read_control(struct tomoyo_io_buffer *head, char __user *buffer,
			    const int buffer_len);
ssize_t tomoyo_write_control(struct tomoyo_io_buffer *head,
			     const char __user *buffer, const int buffer_len);
struct tomoyo_condition *tomoyo_get_condition(struct tomoyo_acl_param *param);
struct tomoyo_domain_info *tomoyo_assign_domain(const char *domainname,
						const bool transit);
struct tomoyo_domain_info *tomoyo_find_domain(const char *domainname);
struct tomoyo_group *tomoyo_get_group(struct tomoyo_acl_param *param,
				      const u8 idx);
struct tomoyo_policy_namespace *tomoyo_assign_namespace
(const char *domainname);
struct tomoyo_profile *tomoyo_profile(const struct tomoyo_policy_namespace *ns,
				      const u8 profile);
unsigned int tomoyo_check_flags(const struct tomoyo_domain_info *domain,
				const u8 index);
u8 tomoyo_parse_ulong(unsigned long *result, char **str);
void *tomoyo_commit_ok(void *data, const unsigned int size);
void __init tomoyo_load_builtin_policy(void);
void __init tomoyo_mm_init(void);
void tomoyo_check_acl(struct tomoyo_request_info *r,
		      bool (*check_entry) (struct tomoyo_request_info *,
					   const struct tomoyo_acl_info *));
void tomoyo_check_profile(void);
void tomoyo_convert_time(time64_t time, struct tomoyo_time *stamp);
void tomoyo_del_condition(struct list_head *element);
void tomoyo_fill_path_info(struct tomoyo_path_info *ptr);
void tomoyo_get_attributes(struct tomoyo_obj_info *obj);
void tomoyo_init_policy_namespace(struct tomoyo_policy_namespace *ns);
void tomoyo_load_policy(const char *filename);
void tomoyo_normalize_line(unsigned char *buffer);
void tomoyo_notify_gc(struct tomoyo_io_buffer *head, const bool is_register);
void tomoyo_print_ip(char *buf, const unsigned int size,
		     const struct tomoyo_ipaddr_union *ptr);
void tomoyo_print_ulong(char *buffer, const int buffer_len,
			const unsigned long value, const u8 type);
void tomoyo_put_name_union(struct tomoyo_name_union *ptr);
void tomoyo_put_number_union(struct tomoyo_number_union *ptr);
void tomoyo_read_log(struct tomoyo_io_buffer *head);
void tomoyo_update_stat(const u8 index);
void tomoyo_warn_oom(const char *function);
void tomoyo_write_log(struct tomoyo_request_info *r, const char *fmt, ...)
	__printf(2, 3);
void tomoyo_write_log2(struct tomoyo_request_info *r, int len, const char *fmt,
		       va_list args);

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

extern bool tomoyo_policy_loaded;
extern const char * const tomoyo_condition_keyword
[TOMOYO_MAX_CONDITION_KEYWORD];
extern const char * const tomoyo_dif[TOMOYO_MAX_DOMAIN_INFO_FLAGS];
extern const char * const tomoyo_mac_keywords[TOMOYO_MAX_MAC_INDEX
					      + TOMOYO_MAX_MAC_CATEGORY_INDEX];
extern const char * const tomoyo_mode[TOMOYO_CONFIG_MAX_MODE];
extern const char * const tomoyo_path_keyword[TOMOYO_MAX_PATH_OPERATION];
extern const char * const tomoyo_proto_keyword[TOMOYO_SOCK_MAX];
extern const char * const tomoyo_socket_keyword[TOMOYO_MAX_NETWORK_OPERATION];
extern const u8 tomoyo_index2category[TOMOYO_MAX_MAC_INDEX];
extern const u8 tomoyo_pn2mac[TOMOYO_MAX_PATH_NUMBER_OPERATION];
extern const u8 tomoyo_pnnn2mac[TOMOYO_MAX_MKDEV_OPERATION];
extern const u8 tomoyo_pp2mac[TOMOYO_MAX_PATH2_OPERATION];
extern struct list_head tomoyo_condition_list;
extern struct list_head tomoyo_domain_list;
extern struct list_head tomoyo_name_list[TOMOYO_MAX_HASH];
extern struct list_head tomoyo_namespace_list;
extern struct mutex tomoyo_policy_lock;
extern struct srcu_struct tomoyo_ss;
extern struct tomoyo_domain_info tomoyo_kernel_domain;
extern struct tomoyo_policy_namespace tomoyo_kernel_namespace;
extern unsigned int tomoyo_memory_quota[TOMOYO_MAX_MEMORY_STAT];
extern unsigned int tomoyo_memory_used[TOMOYO_MAX_MEMORY_STAT];

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

/**
 * tomoyo_read_lock - Take lock for protecting policy.
 *
 * Returns index number for tomoyo_read_unlock().
 */
static inline int tomoyo_read_lock(void)
{
	return srcu_read_lock(&tomoyo_ss);
}

/**
 * tomoyo_read_unlock - Release lock for protecting policy.
 *
 * @idx: Index number returned by tomoyo_read_lock().
 *
 * Returns nothing.
 */
static inline void tomoyo_read_unlock(int idx)
{
	srcu_read_unlock(&tomoyo_ss, idx);
}

/**
 * tomoyo_sys_getppid - Copy of getppid().
 *
 * Returns parent process's PID.
 *
 * Alpha does not have getppid() defined. To be able to build this module on
 * Alpha, I have to copy getppid() from kernel/timer.c.
 */
static inline pid_t tomoyo_sys_getppid(void)
{
	pid_t pid;
	rcu_read_lock();
	pid = task_tgid_vnr(rcu_dereference(current->real_parent));
	rcu_read_unlock();
	return pid;
}

/**
 * tomoyo_sys_getpid - Copy of getpid().
 *
 * Returns current thread's PID.
 *
 * Alpha does not have getpid() defined. To be able to build this module on
 * Alpha, I have to copy getpid() from kernel/timer.c.
 */
static inline pid_t tomoyo_sys_getpid(void)
{
	return task_tgid_vnr(current);
}

/**
 * tomoyo_pathcmp - strcmp() for "struct tomoyo_path_info" structure.
 *
 * @a: Pointer to "struct tomoyo_path_info".
 * @b: Pointer to "struct tomoyo_path_info".
 *
 * Returns true if @a == @b, false otherwise.
 */
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_put_name - Drop reference on "struct tomoyo_name".
 *
 * @name: Pointer to "struct tomoyo_path_info". Maybe NULL.
 *
 * Returns nothing.
 */
static inline void tomoyo_put_name(const struct tomoyo_path_info *name)
{
	if (name) {
		struct tomoyo_name *ptr =
			container_of(name, typeof(*ptr), entry);
		atomic_dec(&ptr->head.users);
	}
}

/**
 * tomoyo_put_condition - Drop reference on "struct tomoyo_condition".
 *
 * @cond: Pointer to "struct tomoyo_condition". Maybe NULL.
 *
 * Returns nothing.
 */
static inline void tomoyo_put_condition(struct tomoyo_condition *cond)
{
	if (cond)
		atomic_dec(&cond->head.users);
}

/**
 * tomoyo_put_group - Drop reference on "struct tomoyo_group".
 *
 * @group: Pointer to "struct tomoyo_group". Maybe NULL.
 *
 * Returns nothing.
 */
static inline void tomoyo_put_group(struct tomoyo_group *group)
{
	if (group)
		atomic_dec(&group->head.users);
}

/**
 * tomoyo_domain - Get "struct tomoyo_domain_info" for current thread.
 *
 * Returns pointer to "struct tomoyo_domain_info" for current thread.
 */
static inline struct tomoyo_domain_info *tomoyo_domain(void)
{
	return current_cred()->security;
}

/**
 * tomoyo_real_domain - Get "struct tomoyo_domain_info" for specified thread.
 *
 * @task: Pointer to "struct task_struct".
 *
 * Returns pointer to "struct tomoyo_security" for specified thread.
 */
static inline struct tomoyo_domain_info *tomoyo_real_domain(struct task_struct
							    *task)
{
	return task_cred_xxx(task, security);
}

/**
 * tomoyo_same_name_union - Check for duplicated "struct tomoyo_name_union" entry.
 *
 * @a: Pointer to "struct tomoyo_name_union".
 * @b: Pointer to "struct tomoyo_name_union".
 *
 * Returns true if @a == @b, false otherwise.
 */
static inline bool tomoyo_same_name_union
(const struct tomoyo_name_union *a, const struct tomoyo_name_union *b)
{
	return a->filename == b->filename && a->group == b->group;
}

/**
 * tomoyo_same_number_union - Check for duplicated "struct tomoyo_number_union" entry.
 *
 * @a: Pointer to "struct tomoyo_number_union".
 * @b: Pointer to "struct tomoyo_number_union".
 *
 * Returns true if @a == @b, false otherwise.
 */
static inline bool tomoyo_same_number_union
(const struct tomoyo_number_union *a, const struct tomoyo_number_union *b)
{
	return a->values[0] == b->values[0] && a->values[1] == b->values[1] &&
		a->group == b->group && a->value_type[0] == b->value_type[0] &&
		a->value_type[1] == b->value_type[1];
}

/**
 * tomoyo_same_ipaddr_union - Check for duplicated "struct tomoyo_ipaddr_union" entry.
 *
 * @a: Pointer to "struct tomoyo_ipaddr_union".
 * @b: Pointer to "struct tomoyo_ipaddr_union".
 *
 * Returns true if @a == @b, false otherwise.
 */
static inline bool tomoyo_same_ipaddr_union
(const struct tomoyo_ipaddr_union *a, const struct tomoyo_ipaddr_union *b)
{
	return !memcmp(a->ip, b->ip, sizeof(a->ip)) && a->group == b->group &&
		a->is_ipv6 == b->is_ipv6;
}

/**
 * tomoyo_current_namespace - Get "struct tomoyo_policy_namespace" for current thread.
 *
 * Returns pointer to "struct tomoyo_policy_namespace" for current thread.
 */
static inline struct tomoyo_policy_namespace *tomoyo_current_namespace(void)
{
	return tomoyo_domain()->ns;
}

#if defined(CONFIG_SLOB)

/**
 * tomoyo_round2 - Round up to power of 2 for calculating memory usage.
 *
 * @size: Size to be rounded up.
 *
 * Returns @size.
 *
 * Since SLOB does not round up, this function simply returns @size.
 */
static inline int tomoyo_round2(size_t size)
{
	return size;
}

#else

/**
 * tomoyo_round2 - Round up to power of 2 for calculating memory usage.
 *
 * @size: Size to be rounded up.
 *
 * Returns rounded size.
 *
 * Strictly speaking, SLAB may be able to allocate (e.g.) 96 bytes instead of
 * (e.g.) 128 bytes.
 */
static inline int tomoyo_round2(size_t size)
{
#if PAGE_SIZE == 4096
	size_t bsize = 32;
#else
	size_t bsize = 64;
#endif
	if (!size)
		return 0;
	while (size > bsize)
		bsize <<= 1;
	return bsize;
}

#endif

/**
 * list_for_each_cookie - iterate over a list with cookie.
 * @pos:        the &struct list_head to use as a loop cursor.
 * @head:       the head for your list.
 */
#define list_for_each_cookie(pos, head)					\
	if (!pos)							\
		pos =  srcu_dereference((head)->next, &tomoyo_ss);	\
	for ( ; pos != (head); pos = srcu_dereference(pos->next, &tomoyo_ss))

#endif /* !defined(_SECURITY_TOMOYO_COMMON_H) */