aboutsummaryrefslogblamecommitdiffstats
path: root/include/linux/security.h
blob: 627382e7405779464e5475040a1cf1ca084b7b49 (plain) (tree)
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
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
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198
2199
2200
2201
2202
2203
2204
2205
2206
2207
2208
2209
2210
2211
2212
2213
2214
2215
2216
2217
2218
2219
2220
2221
2222
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236
2237
2238
2239
2240
2241
2242
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
2266
2267
2268
2269
2270
2271
2272
2273
2274
2275
2276
2277
2278
2279
2280
2281
2282
2283
2284
2285
2286
2287
2288
2289
2290
2291
2292
2293
2294
2295
2296
2297
2298
2299
2300
2301
2302
2303
2304
2305
2306
2307
2308
2309
2310
2311
2312
2313
2314
2315
2316
2317
2318
2319
2320
2321
2322
2323
2324
2325
2326
2327
2328
2329
2330
2331
2332
2333
2334
2335
2336
2337
2338
2339
2340
2341
2342
2343
2344
2345
2346
2347
2348
2349
2350
2351
2352
2353
2354
2355
2356
2357
2358
2359
2360
2361
2362
2363
2364
2365
2366
2367
2368
2369
2370
2371
2372
2373
2374
2375
2376
2377
2378
2379
2380
2381
2382
2383
2384
2385
2386
2387
2388
2389
2390
2391
2392
2393
2394
2395
2396
2397
2398
2399
2400
2401
2402
2403
2404
2405
2406
2407
2408
2409
2410
2411
2412
2413
2414
2415
2416
2417
2418
2419
2420
2421
2422
2423
2424
2425
2426
2427
2428
2429
2430
2431
2432
2433
2434
2435
2436
2437
2438
2439
2440
2441
2442
2443
2444
2445
2446
2447
2448
2449
2450
2451
2452
2453
2454
2455
2456
2457
2458
2459
2460
2461
2462
2463
2464
2465
2466
2467
2468
2469
2470
2471
2472
2473
2474
2475
2476
2477
2478
2479
2480
2481
2482
2483
2484
2485
2486
2487
2488
2489
2490
2491
2492
2493
2494
2495
2496
2497
2498
2499
2500
2501
2502
2503
2504
2505
2506
2507
2508
2509
2510
2511
2512
2513
2514
2515
2516
2517
2518
2519
2520
2521
2522
2523
2524
2525
2526
2527
2528
2529
2530
2531
2532
2533
2534
2535
2536
2537
2538
2539
2540
2541
2542
2543
2544
2545
2546
2547
2548
2549
2550
2551
2552
2553
2554
2555
2556
2557
2558
2559
2560
2561
2562
2563
2564
2565
2566
2567
2568
2569
2570
2571
2572
2573
2574
2575
2576
2577
2578
2579
2580
2581
2582
2583
2584
2585
2586
2587
2588
2589
2590
2591
2592
2593
2594
2595
2596
2597
2598
2599
2600
2601
2602
2603
2604
2605
2606
2607
2608
2609
2610
2611
2612
2613
2614
2615
2616
2617
2618
2619
2620
2621
2622
2623
2624
2625
2626
2627
2628
2629
2630
2631
2632
2633
2634
2635
2636


























































































































































































































































                                                                                                                                      

















                                                                               




                                                                         




                                                                                   









                                                                                   





                                                                                    













                                                                                   





                                                                         




































































































































































































































































































































































































































































































































































































































































































































































                                                                                           
                                                                            
                                                              
                                                                         

                                                                           
                                                                                

                                                                      
                                                                               












































































































































































































































































































































                                                                                                                   









                                                                                








                                                               







                                                                      















                                                                   







                                                              















                                                                  










                                                                       
























































































































































































































































































































































































































                                                                                                                              



                                                                                     


























































































































































































                                                                                          







                                                                    






                                                               





                                                                 











                                                                





                                                              











                                                              






                                                                   



















































































































































































































































































































































































































































































                                                                                                                              
                                                                                


















































































































                                                                                      
                                                                                









                                                    
/*
 * Linux Security plug
 *
 * Copyright (C) 2001 WireX Communications, Inc <chris@wirex.com>
 * Copyright (C) 2001 Greg Kroah-Hartman <greg@kroah.com>
 * Copyright (C) 2001 Networks Associates Technology, Inc <ssmalley@nai.com>
 * Copyright (C) 2001 James Morris <jmorris@intercode.com.au>
 * Copyright (C) 2001 Silicon Graphics, Inc. (Trust Technology Group)
 *
 *	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.
 *
 *	Due to this file being licensed under the GPL there is controversy over
 *	whether this permits you to write a module that #includes this file
 *	without placing your module under the GPL.  Please consult a lawyer for
 *	advice before doing this.
 *
 */

#ifndef __LINUX_SECURITY_H
#define __LINUX_SECURITY_H

#include <linux/fs.h>
#include <linux/binfmts.h>
#include <linux/signal.h>
#include <linux/resource.h>
#include <linux/sem.h>
#include <linux/shm.h>
#include <linux/msg.h>
#include <linux/sched.h>

struct ctl_table;

/*
 * These functions are in security/capability.c and are used
 * as the default capabilities functions
 */
extern int cap_capable (struct task_struct *tsk, int cap);
extern int cap_settime (struct timespec *ts, struct timezone *tz);
extern int cap_ptrace (struct task_struct *parent, struct task_struct *child);
extern int cap_capget (struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted);
extern int cap_capset_check (struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted);
extern void cap_capset_set (struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted);
extern int cap_bprm_set_security (struct linux_binprm *bprm);
extern void cap_bprm_apply_creds (struct linux_binprm *bprm, int unsafe);
extern int cap_bprm_secureexec(struct linux_binprm *bprm);
extern int cap_inode_setxattr(struct dentry *dentry, char *name, void *value, size_t size, int flags);
extern int cap_inode_removexattr(struct dentry *dentry, char *name);
extern int cap_task_post_setuid (uid_t old_ruid, uid_t old_euid, uid_t old_suid, int flags);
extern void cap_task_reparent_to_init (struct task_struct *p);
extern int cap_syslog (int type);
extern int cap_vm_enough_memory (long pages);

struct msghdr;
struct sk_buff;
struct sock;
struct sockaddr;
struct socket;

extern int cap_netlink_send(struct sock *sk, struct sk_buff *skb);
extern int cap_netlink_recv(struct sk_buff *skb);

/*
 * Values used in the task_security_ops calls
 */
/* setuid or setgid, id0 == uid or gid */
#define LSM_SETID_ID	1

/* setreuid or setregid, id0 == real, id1 == eff */
#define LSM_SETID_RE	2

/* setresuid or setresgid, id0 == real, id1 == eff, uid2 == saved */
#define LSM_SETID_RES	4

/* setfsuid or setfsgid, id0 == fsuid or fsgid */
#define LSM_SETID_FS	8

/* forward declares to avoid warnings */
struct nfsctl_arg;
struct sched_param;
struct swap_info_struct;

/* bprm_apply_creds unsafe reasons */
#define LSM_UNSAFE_SHARE	1
#define LSM_UNSAFE_PTRACE	2
#define LSM_UNSAFE_PTRACE_CAP	4

#ifdef CONFIG_SECURITY

/**
 * struct security_operations - main security structure
 *
 * Security hooks for program execution operations.
 *
 * @bprm_alloc_security:
 *	Allocate and attach a security structure to the @bprm->security field.
 *	The security field is initialized to NULL when the bprm structure is
 *	allocated.
 *	@bprm contains the linux_binprm structure to be modified.
 *	Return 0 if operation was successful.
 * @bprm_free_security:
 *	@bprm contains the linux_binprm structure to be modified.
 *	Deallocate and clear the @bprm->security field.
 * @bprm_apply_creds:
 *	Compute and set the security attributes of a process being transformed
 *	by an execve operation based on the old attributes (current->security)
 *	and the information saved in @bprm->security by the set_security hook.
 *	Since this hook function (and its caller) are void, this hook can not
 *	return an error.  However, it can leave the security attributes of the
 *	process unchanged if an access failure occurs at this point.
 *	bprm_apply_creds is called under task_lock.  @unsafe indicates various
 *	reasons why it may be unsafe to change security state.
 *	@bprm contains the linux_binprm structure.
 * @bprm_post_apply_creds:
 *	Runs after bprm_apply_creds with the task_lock dropped, so that
 *	functions which cannot be called safely under the task_lock can
 *	be used.  This hook is a good place to perform state changes on
 *	the process such as closing open file descriptors to which access
 *	is no longer granted if the attributes were changed.
 *	Note that a security module might need to save state between
 *	bprm_apply_creds and bprm_post_apply_creds to store the decision
 *	on whether the process may proceed.
 *	@bprm contains the linux_binprm structure.
 * @bprm_set_security:
 *	Save security information in the bprm->security field, typically based
 *	on information about the bprm->file, for later use by the apply_creds
 *	hook.  This hook may also optionally check permissions (e.g. for
 *	transitions between security domains).
 *	This hook may be called multiple times during a single execve, e.g. for
 *	interpreters.  The hook can tell whether it has already been called by
 *	checking to see if @bprm->security is non-NULL.  If so, then the hook
 *	may decide either to retain the security information saved earlier or
 *	to replace it.
 *	@bprm contains the linux_binprm structure.
 *	Return 0 if the hook is successful and permission is granted.
 * @bprm_check_security:
 * 	This hook mediates the point when a search for a binary handler	will
 * 	begin.  It allows a check the @bprm->security value which is set in
 * 	the preceding set_security call.  The primary difference from
 * 	set_security is that the argv list and envp list are reliably
 * 	available in @bprm.  This hook may be called multiple times
 * 	during a single execve; and in each pass set_security is called
 * 	first.
 * 	@bprm contains the linux_binprm structure.
 *	Return 0 if the hook is successful and permission is granted.
 * @bprm_secureexec:
 *      Return a boolean value (0 or 1) indicating whether a "secure exec" 
 *      is required.  The flag is passed in the auxiliary table
 *      on the initial stack to the ELF interpreter to indicate whether libc 
 *      should enable secure mode.
 *      @bprm contains the linux_binprm structure.
 *
 * Security hooks for filesystem operations.
 *
 * @sb_alloc_security:
 *	Allocate and attach a security structure to the sb->s_security field.
 *	The s_security field is initialized to NULL when the structure is
 *	allocated.
 *	@sb contains the super_block structure to be modified.
 *	Return 0 if operation was successful.
 * @sb_free_security:
 *	Deallocate and clear the sb->s_security field.
 *	@sb contains the super_block structure to be modified.
 * @sb_statfs:
 *	Check permission before obtaining filesystem statistics for the @sb
 *	filesystem.
 *	@sb contains the super_block structure for the filesystem.
 *	Return 0 if permission is granted.  
 * @sb_mount:
 *	Check permission before an object specified by @dev_name is mounted on
 *	the mount point named by @nd.  For an ordinary mount, @dev_name
 *	identifies a device if the file system type requires a device.  For a
 *	remount (@flags & MS_REMOUNT), @dev_name is irrelevant.  For a
 *	loopback/bind mount (@flags & MS_BIND), @dev_name identifies the
 *	pathname of the object being mounted.
 *	@dev_name contains the name for object being mounted.
 *	@nd contains the nameidata structure for mount point object.
 *	@type contains the filesystem type.
 *	@flags contains the mount flags.
 *	@data contains the filesystem-specific data.
 *	Return 0 if permission is granted.
 * @sb_copy_data:
 *	Allow mount option data to be copied prior to parsing by the filesystem,
 *	so that the security module can extract security-specific mount
 *	options cleanly (a filesystem may modify the data e.g. with strsep()).
 *	This also allows the original mount data to be stripped of security-
 *	specific options to avoid having to make filesystems aware of them.
 *	@type the type of filesystem being mounted.
 *	@orig the original mount data copied from userspace.
 *	@copy copied data which will be passed to the security module.
 *	Returns 0 if the copy was successful.
 * @sb_check_sb:
 *	Check permission before the device with superblock @mnt->sb is mounted
 *	on the mount point named by @nd.
 *	@mnt contains the vfsmount for device being mounted.
 *	@nd contains the nameidata object for the mount point.
 *	Return 0 if permission is granted.
 * @sb_umount:
 *	Check permission before the @mnt file system is unmounted.
 *	@mnt contains the mounted file system.
 *	@flags contains the unmount flags, e.g. MNT_FORCE.
 *	Return 0 if permission is granted.
 * @sb_umount_close:
 *	Close any files in the @mnt mounted filesystem that are held open by
 *	the security module.  This hook is called during an umount operation
 *	prior to checking whether the filesystem is still busy.
 *	@mnt contains the mounted filesystem.
 * @sb_umount_busy:
 *	Handle a failed umount of the @mnt mounted filesystem, e.g.  re-opening
 *	any files that were closed by umount_close.  This hook is called during
 *	an umount operation if the umount fails after a call to the
 *	umount_close hook.
 *	@mnt contains the mounted filesystem.
 * @sb_post_remount:
 *	Update the security module's state when a filesystem is remounted.
 *	This hook is only called if the remount was successful.
 *	@mnt contains the mounted file system.
 *	@flags contains the new filesystem flags.
 *	@data contains the filesystem-specific data.
 * @sb_post_mountroot:
 *	Update the security module's state when the root filesystem is mounted.
 *	This hook is only called if the mount was successful.
 * @sb_post_addmount:
 *	Update the security module's state when a filesystem is mounted.
 *	This hook is called any time a mount is successfully grafetd to
 *	the tree.
 *	@mnt contains the mounted filesystem.
 *	@mountpoint_nd contains the nameidata structure for the mount point.
 * @sb_pivotroot:
 *	Check permission before pivoting the root filesystem.
 *	@old_nd contains the nameidata structure for the new location of the current root (put_old).
 *      @new_nd contains the nameidata structure for the new root (new_root).
 *	Return 0 if permission is granted.
 * @sb_post_pivotroot:
 *	Update module state after a successful pivot.
 *	@old_nd contains the nameidata structure for the old root.
 *      @new_nd contains the nameidata structure for the new root.
 *
 * Security hooks for inode operations.
 *
 * @inode_alloc_security:
 *	Allocate and attach a security structure to @inode->i_security.  The
 *	i_security field is initialized to NULL when the inode structure is
 *	allocated.
 *	@inode contains the inode structure.
 *	Return 0 if operation was successful.
 * @inode_free_security:
 *	@inode contains the inode structure.
 *	Deallocate the inode security structure and set @inode->i_security to
 *	NULL. 
 * @inode_init_security:
 * 	Obtain the security attribute name suffix and value to set on a newly
 *	created inode and set up the incore security field for the new inode.
 *	This hook is called by the fs code as part of the inode creation
 *	transaction and provides for atomic labeling of the inode, unlike
 *	the post_create/mkdir/... hooks called by the VFS.  The hook function
 *	is expected to allocate the name and value via kmalloc, with the caller
 *	being responsible for calling kfree after using them.
 *	If the security module does not use security attributes or does
 *	not wish to put a security attribute on this particular inode,
 *	then it should return -EOPNOTSUPP to skip this processing.
 *	@inode contains the inode structure of the newly created inode.
 *	@dir contains the inode structure of the parent directory.
 *	@name will be set to the allocated name suffix (e.g. selinux).
 *	@value will be set to the allocated attribute value.
 *	@len will be set to the length of the value.
 *	Returns 0 if @name and @value have been successfully set,
 *		-EOPNOTSUPP if no security attribute is needed, or
 *		-ENOMEM on memory allocation failure.
 * @inode_create:
 *	Check permission to create a regular file.
 *	@dir contains inode structure of the parent of the new file.
 *	@dentry contains the dentry structure for the file to be created.
 *	@mode contains the file mode of the file to be created.
 *	Return 0 if permission is granted.
 * @inode_link:
 *	Check permission before creating a new hard link to a file.
 *	@old_dentry contains the dentry structure for an existing link to the file.
 *	@dir contains the inode structure of the parent directory of the new link.
 *	@new_dentry contains the dentry structure for the new link.
 *	Return 0 if permission is granted.
 * @inode_unlink:
 *	Check the permission to remove a hard link to a file. 
 *	@dir contains the inode structure of parent directory of the file.
 *	@dentry contains the dentry structure for file to be unlinked.
 *	Return 0 if permission is granted.
 * @inode_symlink:
 *	Check the permission to create a symbolic link to a file.
 *	@dir contains the inode structure of parent directory of the symbolic link.
 *	@dentry contains the dentry structure of the symbolic link.
 *	@old_name contains the pathname of file.
 *	Return 0 if permission is granted.
 * @inode_mkdir:
 *	Check permissions to create a new directory in the existing directory
 *	associated with inode strcture @dir. 
 *	@dir containst the inode structure of parent of the directory to be created.
 *	@dentry contains the dentry structure of new directory.
 *	@mode contains the mode of new directory.
 *	Return 0 if permission is granted.
 * @inode_rmdir:
 *	Check the permission to remove a directory.
 *	@dir contains the inode structure of parent of the directory to be removed.
 *	@dentry contains the dentry structure of directory to be removed.
 *	Return 0 if permission is granted.
 * @inode_mknod:
 *	Check permissions when creating a special file (or a socket or a fifo
 *	file created via the mknod system call).  Note that if mknod operation
 *	is being done for a regular file, then the create hook will be called
 *	and not this hook.
 *	@dir contains the inode structure of parent of the new file.
 *	@dentry contains the dentry structure of the new file.
 *	@mode contains the mode of the new file.
 *	@dev contains the the device number.
 *	Return 0 if permission is granted.
 * @inode_rename:
 *	Check for permission to rename a file or directory.
 *	@old_dir contains the inode structure for parent of the old link.
 *	@old_dentry contains the dentry structure of the old link.
 *	@new_dir contains the inode structure for parent of the new link.
 *	@new_dentry contains the dentry structure of the new link.
 *	Return 0 if permission is granted.
 * @inode_readlink:
 *	Check the permission to read the symbolic link.
 *	@dentry contains the dentry structure for the file link.
 *	Return 0 if permission is granted.
 * @inode_follow_link:
 *	Check permission to follow a symbolic link when looking up a pathname.
 *	@dentry contains the dentry structure for the link.
 *	@nd contains the nameidata structure for the parent directory.
 *	Return 0 if permission is granted.
 * @inode_permission:
 *	Check permission before accessing an inode.  This hook is called by the
 *	existing Linux permission function, so a security module can use it to
 *	provide additional checking for existing Linux permission checks.
 *	Notice that this hook is called when a file is opened (as well as many
 *	other operations), whereas the file_security_ops permission hook is
 *	called when the actual read/write operations are performed.
 *	@inode contains the inode structure to check.
 *	@mask contains the permission mask.
 *     @nd contains the nameidata (may be NULL).
 *	Return 0 if permission is granted.
 * @inode_setattr:
 *	Check permission before setting file attributes.  Note that the kernel
 *	call to notify_change is performed from several locations, whenever
 *	file attributes change (such as when a file is truncated, chown/chmod
 *	operations, transferring disk quotas, etc).
 *	@dentry contains the dentry structure for the file.
 *	@attr is the iattr structure containing the new file attributes.
 *	Return 0 if permission is granted.
 * @inode_getattr:
 *	Check permission before obtaining file attributes.
 *	@mnt is the vfsmount where the dentry was looked up
 *	@dentry contains the dentry structure for the file.
 *	Return 0 if permission is granted.
 * @inode_delete:
 *	@inode contains the inode structure for deleted inode.
 *	This hook is called when a deleted inode is released (i.e. an inode
 *	with no hard links has its use count drop to zero).  A security module
 *	can use this hook to release any persistent label associated with the
 *	inode.
 * @inode_setxattr:
 * 	Check permission before setting the extended attributes
 * 	@value identified by @name for @dentry.
 * 	Return 0 if permission is granted.
 * @inode_post_setxattr:
 * 	Update inode security field after successful setxattr operation.
 * 	@value identified by @name for @dentry.
 * @inode_getxattr:
 * 	Check permission before obtaining the extended attributes
 * 	identified by @name for @dentry.
 * 	Return 0 if permission is granted.
 * @inode_listxattr:
 * 	Check permission before obtaining the list of extended attribute 
 * 	names for @dentry.
 * 	Return 0 if permission is granted.
 * @inode_removexattr:
 * 	Check permission before removing the extended attribute
 * 	identified by @name for @dentry.
 * 	Return 0 if permission is granted.
 * @inode_getsecurity:
 *	Copy the extended attribute representation of the security label 
 *	associated with @name for @inode into @buffer.  @buffer may be
 *	NULL to request the size of the buffer required.  @size indicates
 *	the size of @buffer in bytes.  Note that @name is the remainder
 *	of the attribute name after the security. prefix has been removed.
 *	Return number of bytes used/required on success.
 * @inode_setsecurity:
 *	Set the security label associated with @name for @inode from the
 *	extended attribute value @value.  @size indicates the size of the
 *	@value in bytes.  @flags may be XATTR_CREATE, XATTR_REPLACE, or 0.
 *	Note that @name is the remainder of the attribute name after the 
 *	security. prefix has been removed.
 *	Return 0 on success.
 * @inode_listsecurity:
 *	Copy the extended attribute names for the security labels
 *	associated with @inode into @buffer.  The maximum size of @buffer
 *	is specified by @buffer_size.  @buffer may be NULL to request
 *	the size of the buffer required.
 *	Returns number of bytes used/required on success.
 *
 * Security hooks for file operations
 *
 * @file_permission:
 *	Check file permissions before accessing an open file.  This hook is
 *	called by various operations that read or write files.  A security
 *	module can use this hook to perform additional checking on these
 *	operations, e.g.  to revalidate permissions on use to support privilege
 *	bracketing or policy changes.  Notice that this hook is used when the
 *	actual read/write operations are performed, whereas the
 *	inode_security_ops hook is called when a file is opened (as well as
 *	many other operations).
 *	Caveat:  Although this hook can be used to revalidate permissions for
 *	various system call operations that read or write files, it does not
 *	address the revalidation of permissions for memory-mapped files.
 *	Security modules must handle this separately if they need such
 *	revalidation.
 *	@file contains the file structure being accessed.
 *	@mask contains the requested permissions.
 *	Return 0 if permission is granted.
 * @file_alloc_security:
 *	Allocate and attach a security structure to the file->f_security field.
 *	The security field is initialized to NULL when the structure is first
 *	created.
 *	@file contains the file structure to secure.
 *	Return 0 if the hook is successful and permission is granted.
 * @file_free_security:
 *	Deallocate and free any security structures stored in file->f_security.
 *	@file contains the file structure being modified.
 * @file_ioctl:
 *	@file contains the file structure.
 *	@cmd contains the operation to perform.
 *	@arg contains the operational arguments.
 *	Check permission for an ioctl operation on @file.  Note that @arg can
 *	sometimes represents a user space pointer; in other cases, it may be a
 *	simple integer value.  When @arg represents a user space pointer, it
 *	should never be used by the security module.
 *	Return 0 if permission is granted.
 * @file_mmap :
 *	Check permissions for a mmap operation.  The @file may be NULL, e.g.
 *	if mapping anonymous memory.
 *	@file contains the file structure for file to map (may be NULL).
 *	@reqprot contains the protection requested by the application.
 *	@prot contains the protection that will be applied by the kernel.
 *	@flags contains the operational flags.
 *	Return 0 if permission is granted.
 * @file_mprotect:
 *	Check permissions before changing memory access permissions.
 *	@vma contains the memory region to modify.
 *	@reqprot contains the protection requested by the application.
 *	@prot contains the protection that will be applied by the kernel.
 *	Return 0 if permission is granted.
 * @file_lock:
 *	Check permission before performing file locking operations.
 *	Note: this hook mediates both flock and fcntl style locks.
 *	@file contains the file structure.
 *	@cmd contains the posix-translated lock operation to perform
 *	(e.g. F_RDLCK, F_WRLCK).
 *	Return 0 if permission is granted.
 * @file_fcntl:
 *	Check permission before allowing the file operation specified by @cmd
 *	from being performed on the file @file.  Note that @arg can sometimes
 *	represents a user space pointer; in other cases, it may be a simple
 *	integer value.  When @arg represents a user space pointer, it should
 *	never be used by the security module.
 *	@file contains the file structure.
 *	@cmd contains the operation to be performed.
 *	@arg contains the operational arguments.
 *	Return 0 if permission is granted.
 * @file_set_fowner:
 *	Save owner security information (typically from current->security) in
 *	file->f_security for later use by the send_sigiotask hook.
 *	@file contains the file structure to update.
 *	Return 0 on success.
 * @file_send_sigiotask:
 *	Check permission for the file owner @fown to send SIGIO or SIGURG to the
 *	process @tsk.  Note that this hook is sometimes called from interrupt.
 *	Note that the fown_struct, @fown, is never outside the context of a
 *	struct file, so the file structure (and associated security information)
 *	can always be obtained:
 *		(struct file *)((long)fown - offsetof(struct file,f_owner));
 * 	@tsk contains the structure of task receiving signal.
 *	@fown contains the file owner information.
 *	@sig is the signal that will be sent.  When 0, kernel sends SIGIO.
 *	Return 0 if permission is granted.
 * @file_receive:
 *	This hook allows security modules to control the ability of a process
 *	to receive an open file descriptor via socket IPC.
 *	@file contains the file structure being received.
 *	Return 0 if permission is granted.
 *
 * Security hooks for task operations.
 *
 * @task_create:
 *	Check permission before creating a child process.  See the clone(2)
 *	manual page for definitions of the @clone_flags.
 *	@clone_flags contains the flags indicating what should be shared.
 *	Return 0 if permission is granted.
 * @task_alloc_security:
 *	@p contains the task_struct for child process.
 *	Allocate and attach a security structure to the p->security field. The
 *	security field is initialized to NULL when the task structure is
 *	allocated.
 *	Return 0 if operation was successful.
 * @task_free_security:
 *	@p contains the task_struct for process.
 *	Deallocate and clear the p->security field.
 * @task_setuid:
 *	Check permission before setting one or more of the user identity
 *	attributes of the current process.  The @flags parameter indicates
 *	which of the set*uid system calls invoked this hook and how to
 *	interpret the @id0, @id1, and @id2 parameters.  See the LSM_SETID
 *	definitions at the beginning of this file for the @flags values and
 *	their meanings.
 *	@id0 contains a uid.
 *	@id1 contains a uid.
 *	@id2 contains a uid.
 *	@flags contains one of the LSM_SETID_* values.
 *	Return 0 if permission is granted.
 * @task_post_setuid:
 *	Update the module's state after setting one or more of the user
 *	identity attributes of the current process.  The @flags parameter
 *	indicates which of the set*uid system calls invoked this hook.  If
 *	@flags is LSM_SETID_FS, then @old_ruid is the old fs uid and the other
 *	parameters are not used.
 *	@old_ruid contains the old real uid (or fs uid if LSM_SETID_FS).
 *	@old_euid contains the old effective uid (or -1 if LSM_SETID_FS).
 *	@old_suid contains the old saved uid (or -1 if LSM_SETID_FS).
 *	@flags contains one of the LSM_SETID_* values.
 *	Return 0 on success.
 * @task_setgid:
 *	Check permission before setting one or more of the group identity
 *	attributes of the current process.  The @flags parameter indicates
 *	which of the set*gid system calls invoked this hook and how to
 *	interpret the @id0, @id1, and @id2 parameters.  See the LSM_SETID
 *	definitions at the beginning of this file for the @flags values and
 *	their meanings.
 *	@id0 contains a gid.
 *	@id1 contains a gid.
 *	@id2 contains a gid.
 *	@flags contains one of the LSM_SETID_* values.
 *	Return 0 if permission is granted.
 * @task_setpgid:
 *	Check permission before setting the process group identifier of the
 *	process @p to @pgid.
 *	@p contains the task_struct for process being modified.
 *	@pgid contains the new pgid.
 *	Return 0 if permission is granted.
 * @task_getpgid:
 *	Check permission before getting the process group identifier of the
 *	process @p.
 *	@p contains the task_struct for the process.
 *	Return 0 if permission is granted.
 * @task_getsid:
 *	Check permission before getting the session identifier of the process
 *	@p.
 *	@p contains the task_struct for the process.
 *	Return 0 if permission is granted.
 * @task_setgroups:
 *	Check permission before setting the supplementary group set of the
 *	current process.
 *	@group_info contains the new group information.
 *	Return 0 if permission is granted.
 * @task_setnice:
 *	Check permission before setting the nice value of @p to @nice.
 *	@p contains the task_struct of process.
 *	@nice contains the new nice value.
 *	Return 0 if permission is granted.
 * @task_setrlimit:
 *	Check permission before setting the resource limits of the current
 *	process for @resource to @new_rlim.  The old resource limit values can
 *	be examined by dereferencing (current->signal->rlim + resource).
 *	@resource contains the resource whose limit is being set.
 *	@new_rlim contains the new limits for @resource.
 *	Return 0 if permission is granted.
 * @task_setscheduler:
 *	Check permission before setting scheduling policy and/or parameters of
 *	process @p based on @policy and @lp.
 *	@p contains the task_struct for process.
 *	@policy contains the scheduling policy.
 *	@lp contains the scheduling parameters.
 *	Return 0 if permission is granted.
 * @task_getscheduler:
 *	Check permission before obtaining scheduling information for process
 *	@p.
 *	@p contains the task_struct for process.
 *	Return 0 if permission is granted.
 * @task_kill:
 *	Check permission before sending signal @sig to @p.  @info can be NULL,
 *	the constant 1, or a pointer to a siginfo structure.  If @info is 1 or
 *	SI_FROMKERNEL(info) is true, then the signal should be viewed as coming
 *	from the kernel and should typically be permitted.
 *	SIGIO signals are handled separately by the send_sigiotask hook in
 *	file_security_ops.
 *	@p contains the task_struct for process.
 *	@info contains the signal information.
 *	@sig contains the signal value.
 *	Return 0 if permission is granted.
 * @task_wait:
 *	Check permission before allowing a process to reap a child process @p
 *	and collect its status information.
 *	@p contains the task_struct for process.
 *	Return 0 if permission is granted.
 * @task_prctl:
 *	Check permission before performing a process control operation on the
 *	current process.
 *	@option contains the operation.
 *	@arg2 contains a argument.
 *	@arg3 contains a argument.
 *	@arg4 contains a argument.
 *	@arg5 contains a argument.
 *	Return 0 if permission is granted.
 * @task_reparent_to_init:
 * 	Set the security attributes in @p->security for a kernel thread that
 * 	is being reparented to the init task.
 *	@p contains the task_struct for the kernel thread.
 * @task_to_inode:
 * 	Set the security attributes for an inode based on an associated task's
 * 	security attributes, e.g. for /proc/pid inodes.
 *	@p contains the task_struct for the task.
 *	@inode contains the inode structure for the inode.
 *
 * Security hooks for Netlink messaging.
 *
 * @netlink_send:
 *	Save security information for a netlink message so that permission
 *	checking can be performed when the message is processed.  The security
 *	information can be saved using the eff_cap field of the
 *      netlink_skb_parms structure.  Also may be used to provide fine
 *	grained control over message transmission.
 *	@sk associated sock of task sending the message.,
 *	@skb contains the sk_buff structure for the netlink message.
 *	Return 0 if the information was successfully saved and message
 *	is allowed to be transmitted.
 * @netlink_recv:
 *	Check permission before processing the received netlink message in
 *	@skb.
 *	@skb contains the sk_buff structure for the netlink message.
 *	Return 0 if permission is granted.
 *
 * Security hooks for Unix domain networking.
 *
 * @unix_stream_connect:
 *	Check permissions before establishing a Unix domain stream connection
 *	between @sock and @other.
 *	@sock contains the socket structure.
 *	@other contains the peer socket structure.
 *	Return 0 if permission is granted.
 * @unix_may_send:
 *	Check permissions before connecting or sending datagrams from @sock to
 *	@other.
 *	@sock contains the socket structure.
 *	@sock contains the peer socket structure.
 *	Return 0 if permission is granted.
 *
 * The @unix_stream_connect and @unix_may_send hooks were necessary because
 * Linux provides an alternative to the conventional file name space for Unix
 * domain sockets.  Whereas binding and connecting to sockets in the file name
 * space is mediated by the typical file permissions (and caught by the mknod
 * and permission hooks in inode_security_ops), binding and connecting to
 * sockets in the abstract name space is completely unmediated.  Sufficient
 * control of Unix domain sockets in the abstract name space isn't possible
 * using only the socket layer hooks, since we need to know the actual target
 * socket, which is not looked up until we are inside the af_unix code.
 *
 * Security hooks for socket operations.
 *
 * @socket_create:
 *	Check permissions prior to creating a new socket.
 *	@family contains the requested protocol family.
 *	@type contains the requested communications type.
 *	@protocol contains the requested protocol.
 *	@kern set to 1 if a kernel socket.
 *	Return 0 if permission is granted.
 * @socket_post_create:
 *	This hook allows a module to update or allocate a per-socket security
 *	structure. Note that the security field was not added directly to the
 *	socket structure, but rather, the socket security information is stored
 *	in the associated inode.  Typically, the inode alloc_security hook will
 *	allocate and and attach security information to
 *	sock->inode->i_security.  This hook may be used to update the
 *	sock->inode->i_security field with additional information that wasn't
 *	available when the inode was allocated.
 *	@sock contains the newly created socket structure.
 *	@family contains the requested protocol family.
 *	@type contains the requested communications type.
 *	@protocol contains the requested protocol.
 *	@kern set to 1 if a kernel socket.
 * @socket_bind:
 *	Check permission before socket protocol layer bind operation is
 *	performed and the socket @sock is bound to the address specified in the
 *	@address parameter.
 *	@sock contains the socket structure.
 *	@address contains the address to bind to.
 *	@addrlen contains the length of address.
 *	Return 0 if permission is granted.  
 * @socket_connect:
 *	Check permission before socket protocol layer connect operation
 *	attempts to connect socket @sock to a remote address, @address.
 *	@sock contains the socket structure.
 *	@address contains the address of remote endpoint.
 *	@addrlen contains the length of address.
 *	Return 0 if permission is granted.  
 * @socket_listen:
 *	Check permission before socket protocol layer listen operation.
 *	@sock contains the socket structure.
 *	@backlog contains the maximum length for the pending connection queue.
 *	Return 0 if permission is granted.
 * @socket_accept:
 *	Check permission before accepting a new connection.  Note that the new
 *	socket, @newsock, has been created and some information copied to it,
 *	but the accept operation has not actually been performed.
 *	@sock contains the listening socket structure.
 *	@newsock contains the newly created server socket for connection.
 *	Return 0 if permission is granted.
 * @socket_post_accept:
 *	This hook allows a security module to copy security
 *	information into the newly created socket's inode.
 *	@sock contains the listening socket structure.
 *	@newsock contains the newly created server socket for connection.
 * @socket_sendmsg:
 *	Check permission before transmitting a message to another socket.
 *	@sock contains the socket structure.
 *	@msg contains the message to be transmitted.
 *	@size contains the size of message.
 *	Return 0 if permission is granted.
 * @socket_recvmsg:
 *	Check permission before receiving a message from a socket.
 *	@sock contains the socket structure.
 *	@msg contains the message structure.
 *	@size contains the size of message structure.
 *	@flags contains the operational flags.
 *	Return 0 if permission is granted.  
 * @socket_getsockname:
 *	Check permission before the local address (name) of the socket object
 *	@sock is retrieved.
 *	@sock contains the socket structure.
 *	Return 0 if permission is granted.
 * @socket_getpeername:
 *	Check permission before the remote address (name) of a socket object
 *	@sock is retrieved.
 *	@sock contains the socket structure.
 *	Return 0 if permission is granted.
 * @socket_getsockopt:
 *	Check permissions before retrieving the options associated with socket
 *	@sock.
 *	@sock contains the socket structure.
 *	@level contains the protocol level to retrieve option from.
 *	@optname contains the name of option to retrieve.
 *	Return 0 if permission is granted.
 * @socket_setsockopt:
 *	Check permissions before setting the options associated with socket
 *	@sock.
 *	@sock contains the socket structure.
 *	@level contains the protocol level to set options for.
 *	@optname contains the name of the option to set.
 *	Return 0 if permission is granted.  
 * @socket_shutdown:
 *	Checks permission before all or part of a connection on the socket
 *	@sock is shut down.
 *	@sock contains the socket structure.
 *	@how contains the flag indicating how future sends and receives are handled.
 *	Return 0 if permission is granted.
 * @socket_sock_rcv_skb:
 *	Check permissions on incoming network packets.  This hook is distinct
 *	from Netfilter's IP input hooks since it is the first time that the
 *	incoming sk_buff @skb has been associated with a particular socket, @sk.
 *	@sk contains the sock (not socket) associated with the incoming sk_buff.
 *	@skb contains the incoming network data.
 * @socket_getpeersec:
 *	This hook allows the security module to provide peer socket security
 *	state to userspace via getsockopt SO_GETPEERSEC.
 *	@sock is the local socket.
 *	@optval userspace memory where the security state is to be copied.
 *	@optlen userspace int where the module should copy the actual length
 *	of the security state.
 *	@len as input is the maximum length to copy to userspace provided
 *	by the caller.
 *	Return 0 if all is well, otherwise, typical getsockopt return
 *	values.
 * @sk_alloc_security:
 *      Allocate and attach a security structure to the sk->sk_security field,
 *      which is used to copy security attributes between local stream sockets.
 * @sk_free_security:
 *	Deallocate security structure.
 *
 * Security hooks affecting all System V IPC operations.
 *
 * @ipc_permission:
 *	Check permissions for access to IPC
 *	@ipcp contains the kernel IPC permission structure
 *	@flag contains the desired (requested) permission set
 *	Return 0 if permission is granted.
 *
 * Security hooks for individual messages held in System V IPC message queues
 * @msg_msg_alloc_security:
 *	Allocate and attach a security structure to the msg->security field.
 *	The security field is initialized to NULL when the structure is first
 *	created.
 *	@msg contains the message structure to be modified.
 *	Return 0 if operation was successful and permission is granted.
 * @msg_msg_free_security:
 *	Deallocate the security structure for this message.
 *	@msg contains the message structure to be modified.
 *
 * Security hooks for System V IPC Message Queues
 *
 * @msg_queue_alloc_security:
 *	Allocate and attach a security structure to the
 *	msq->q_perm.security field. The security field is initialized to
 *	NULL when the structure is first created.
 *	@msq contains the message queue structure to be modified.
 *	Return 0 if operation was successful and permission is granted.
 * @msg_queue_free_security:
 *	Deallocate security structure for this message queue.
 *	@msq contains the message queue structure to be modified.
 * @msg_queue_associate:
 *	Check permission when a message queue is requested through the
 *	msgget system call.  This hook is only called when returning the
 *	message queue identifier for an existing message queue, not when a
 *	new message queue is created.
 *	@msq contains the message queue to act upon.
 *	@msqflg contains the operation control flags.
 *	Return 0 if permission is granted.
 * @msg_queue_msgctl:
 *	Check permission when a message control operation specified by @cmd
 *	is to be performed on the message queue @msq.
 *	The @msq may be NULL, e.g. for IPC_INFO or MSG_INFO.
 *	@msq contains the message queue to act upon.  May be NULL.
 *	@cmd contains the operation to be performed.
 *	Return 0 if permission is granted.  
 * @msg_queue_msgsnd:
 *	Check permission before a message, @msg, is enqueued on the message
 *	queue, @msq.
 *	@msq contains the message queue to send message to.
 *	@msg contains the message to be enqueued.
 *	@msqflg contains operational flags.
 *	Return 0 if permission is granted.
 * @msg_queue_msgrcv:
 *	Check permission before a message, @msg, is removed from the message
 *	queue, @msq.  The @target task structure contains a pointer to the 
 *	process that will be receiving the message (not equal to the current 
 *	process when inline receives are being performed).
 *	@msq contains the message queue to retrieve message from.
 *	@msg contains the message destination.
 *	@target contains the task structure for recipient process.
 *	@type contains the type of message requested.
 *	@mode contains the operational flags.
 *	Return 0 if permission is granted.
 *
 * Security hooks for System V Shared Memory Segments
 *
 * @shm_alloc_security:
 *	Allocate and attach a security structure to the shp->shm_perm.security
 *	field.  The security field is initialized to NULL when the structure is
 *	first created.
 *	@shp contains the shared memory structure to be modified.
 *	Return 0 if operation was successful and permission is granted.
 * @shm_free_security:
 *	Deallocate the security struct for this memory segment.
 *	@shp contains the shared memory structure to be modified.
 * @shm_associate:
 *	Check permission when a shared memory region is requested through the
 *	shmget system call.  This hook is only called when returning the shared
 *	memory region identifier for an existing region, not when a new shared
 *	memory region is created.
 *	@shp contains the shared memory structure to be modified.
 *	@shmflg contains the operation control flags.
 *	Return 0 if permission is granted.
 * @shm_shmctl:
 *	Check permission when a shared memory control operation specified by
 *	@cmd is to be performed on the shared memory region @shp.
 *	The @shp may be NULL, e.g. for IPC_INFO or SHM_INFO.
 *	@shp contains shared memory structure to be modified.
 *	@cmd contains the operation to be performed.
 *	Return 0 if permission is granted.
 * @shm_shmat:
 *	Check permissions prior to allowing the shmat system call to attach the
 *	shared memory segment @shp to the data segment of the calling process.
 *	The attaching address is specified by @shmaddr.
 *	@shp contains the shared memory structure to be modified.
 *	@shmaddr contains the address to attach memory region to.
 *	@shmflg contains the operational flags.
 *	Return 0 if permission is granted.
 *
 * Security hooks for System V Semaphores
 *
 * @sem_alloc_security:
 *	Allocate and attach a security structure to the sma->sem_perm.security
 *	field.  The security field is initialized to NULL when the structure is
 *	first created.
 *	@sma contains the semaphore structure
 *	Return 0 if operation was successful and permission is granted.
 * @sem_free_security:
 *	deallocate security struct for this semaphore
 *	@sma contains the semaphore structure.
 * @sem_associate:
 *	Check permission when a semaphore is requested through the semget
 *	system call.  This hook is only called when returning the semaphore
 *	identifier for an existing semaphore, not when a new one must be
 *	created.
 *	@sma contains the semaphore structure.
 *	@semflg contains the operation control flags.
 *	Return 0 if permission is granted.
 * @sem_semctl:
 *	Check permission when a semaphore operation specified by @cmd is to be
 *	performed on the semaphore @sma.  The @sma may be NULL, e.g. for 
 *	IPC_INFO or SEM_INFO.
 *	@sma contains the semaphore structure.  May be NULL.
 *	@cmd contains the operation to be performed.
 *	Return 0 if permission is granted.
 * @sem_semop
 *	Check permissions before performing operations on members of the
 *	semaphore set @sma.  If the @alter flag is nonzero, the semaphore set 
 *      may be modified.
 *	@sma contains the semaphore structure.
 *	@sops contains the operations to perform.
 *	@nsops contains the number of operations to perform.
 *	@alter contains the flag indicating whether changes are to be made.
 *	Return 0 if permission is granted.
 *
 * @ptrace:
 *	Check permission before allowing the @parent process to trace the
 *	@child process.
 *	Security modules may also want to perform a process tracing check
 *	during an execve in the set_security or apply_creds hooks of
 *	binprm_security_ops if the process is being traced and its security
 *	attributes would be changed by the execve.
 *	@parent contains the task_struct structure for parent process.
 *	@child contains the task_struct structure for child process.
 *	Return 0 if permission is granted.
 * @capget:
 *	Get the @effective, @inheritable, and @permitted capability sets for
 *	the @target process.  The hook may also perform permission checking to
 *	determine if the current process is allowed to see the capability sets
 *	of the @target process.
 *	@target contains the task_struct structure for target process.
 *	@effective contains the effective capability set.
 *	@inheritable contains the inheritable capability set.
 *	@permitted contains the permitted capability set.
 *	Return 0 if the capability sets were successfully obtained.
 * @capset_check:
 *	Check permission before setting the @effective, @inheritable, and
 *	@permitted capability sets for the @target process.
 *	Caveat:  @target is also set to current if a set of processes is
 *	specified (i.e. all processes other than current and init or a
 *	particular process group).  Hence, the capset_set hook may need to
 *	revalidate permission to the actual target process.
 *	@target contains the task_struct structure for target process.
 *	@effective contains the effective capability set.
 *	@inheritable contains the inheritable capability set.
 *	@permitted contains the permitted capability set.
 *	Return 0 if permission is granted.
 * @capset_set:
 *	Set the @effective, @inheritable, and @permitted capability sets for
 *	the @target process.  Since capset_check cannot always check permission
 *	to the real @target process, this hook may also perform permission
 *	checking to determine if the current process is allowed to set the
 *	capability sets of the @target process.  However, this hook has no way
 *	of returning an error due to the structure of the sys_capset code.
 *	@target contains the task_struct structure for target process.
 *	@effective contains the effective capability set.
 *	@inheritable contains the inheritable capability set.
 *	@permitted contains the permitted capability set.
 * @acct:
 *	Check permission before enabling or disabling process accounting.  If
 *	accounting is being enabled, then @file refers to the open file used to
 *	store accounting records.  If accounting is being disabled, then @file
 *	is NULL.
 *	@file contains the file structure for the accounting file (may be NULL).
 *	Return 0 if permission is granted.
 * @sysctl:
 *	Check permission before accessing the @table sysctl variable in the
 *	manner specified by @op.
 *	@table contains the ctl_table structure for the sysctl variable.
 *	@op contains the operation (001 = search, 002 = write, 004 = read).
 *	Return 0 if permission is granted.
 * @capable:
 *	Check whether the @tsk process has the @cap capability.
 *	@tsk contains the task_struct for the process.
 *	@cap contains the capability <include/linux/capability.h>.
 *	Return 0 if the capability is granted for @tsk.
 * @syslog:
 *	Check permission before accessing the kernel message ring or changing
 *	logging to the console.
 *	See the syslog(2) manual page for an explanation of the @type values.  
 *	@type contains the type of action.
 *	Return 0 if permission is granted.
 * @settime:
 *	Check permission to change the system time.
 *	struct timespec and timezone are defined in include/linux/time.h
 *	@ts contains new time
 *	@tz contains new timezone
 *	Return 0 if permission is granted.
 * @vm_enough_memory:
 *	Check permissions for allocating a new virtual mapping.
 *      @pages contains the number of pages.
 *	Return 0 if permission is granted.
 *
 * @register_security:
 * 	allow module stacking.
 * 	@name contains the name of the security module being stacked.
 * 	@ops contains a pointer to the struct security_operations of the module to stack.
 * @unregister_security:
 *	remove a stacked module.
 *	@name contains the name of the security module being unstacked.
 *	@ops contains a pointer to the struct security_operations of the module to unstack.
 * 
 * This is the main security structure.
 */
struct security_operations {
	int (*ptrace) (struct task_struct * parent, struct task_struct * child);
	int (*capget) (struct task_struct * target,
		       kernel_cap_t * effective,
		       kernel_cap_t * inheritable, kernel_cap_t * permitted);
	int (*capset_check) (struct task_struct * target,
			     kernel_cap_t * effective,
			     kernel_cap_t * inheritable,
			     kernel_cap_t * permitted);
	void (*capset_set) (struct task_struct * target,
			    kernel_cap_t * effective,
			    kernel_cap_t * inheritable,
			    kernel_cap_t * permitted);
	int (*acct) (struct file * file);
	int (*sysctl) (struct ctl_table * table, int op);
	int (*capable) (struct task_struct * tsk, int cap);
	int (*quotactl) (int cmds, int type, int id, struct super_block * sb);
	int (*quota_on) (struct dentry * dentry);
	int (*syslog) (int type);
	int (*settime) (struct timespec *ts, struct timezone *tz);
	int (*vm_enough_memory) (long pages);

	int (*bprm_alloc_security) (struct linux_binprm * bprm);
	void (*bprm_free_security) (struct linux_binprm * bprm);
	void (*bprm_apply_creds) (struct linux_binprm * bprm, int unsafe);
	void (*bprm_post_apply_creds) (struct linux_binprm * bprm);
	int (*bprm_set_security) (struct linux_binprm * bprm);
	int (*bprm_check_security) (struct linux_binprm * bprm);
	int (*bprm_secureexec) (struct linux_binprm * bprm);

	int (*sb_alloc_security) (struct super_block * sb);
	void (*sb_free_security) (struct super_block * sb);
	int (*sb_copy_data)(struct file_system_type *type,
			    void *orig, void *copy);
	int (*sb_kern_mount) (struct super_block *sb, void *data);
	int (*sb_statfs) (struct super_block * sb);
	int (*sb_mount) (char *dev_name, struct nameidata * nd,
			 char *type, unsigned long flags, void *data);
	int (*sb_check_sb) (struct vfsmount * mnt, struct nameidata * nd);
	int (*sb_umount) (struct vfsmount * mnt, int flags);
	void (*sb_umount_close) (struct vfsmount * mnt);
	void (*sb_umount_busy) (struct vfsmount * mnt);
	void (*sb_post_remount) (struct vfsmount * mnt,
				 unsigned long flags, void *data);
	void (*sb_post_mountroot) (void);
	void (*sb_post_addmount) (struct vfsmount * mnt,
				  struct nameidata * mountpoint_nd);
	int (*sb_pivotroot) (struct nameidata * old_nd,
			     struct nameidata * new_nd);
	void (*sb_post_pivotroot) (struct nameidata * old_nd,
				   struct nameidata * new_nd);

	int (*inode_alloc_security) (struct inode *inode);	
	void (*inode_free_security) (struct inode *inode);
	int (*inode_init_security) (struct inode *inode, struct inode *dir,
				    char **name, void **value, size_t *len);
	int (*inode_create) (struct inode *dir,
	                     struct dentry *dentry, int mode);
	int (*inode_link) (struct dentry *old_dentry,
	                   struct inode *dir, struct dentry *new_dentry);
	int (*inode_unlink) (struct inode *dir, struct dentry *dentry);
	int (*inode_symlink) (struct inode *dir,
	                      struct dentry *dentry, const char *old_name);
	int (*inode_mkdir) (struct inode *dir, struct dentry *dentry, int mode);
	int (*inode_rmdir) (struct inode *dir, struct dentry *dentry);
	int (*inode_mknod) (struct inode *dir, struct dentry *dentry,
	                    int mode, dev_t dev);
	int (*inode_rename) (struct inode *old_dir, struct dentry *old_dentry,
	                     struct inode *new_dir, struct dentry *new_dentry);
	int (*inode_readlink) (struct dentry *dentry);
	int (*inode_follow_link) (struct dentry *dentry, struct nameidata *nd);
	int (*inode_permission) (struct inode *inode, int mask, struct nameidata *nd);
	int (*inode_setattr)	(struct dentry *dentry, struct iattr *attr);
	int (*inode_getattr) (struct vfsmount *mnt, struct dentry *dentry);
        void (*inode_delete) (struct inode *inode);
	int (*inode_setxattr) (struct dentry *dentry, char *name, void *value,
			       size_t size, int flags);
	void (*inode_post_setxattr) (struct dentry *dentry, char *name, void *value,
				     size_t size, int flags);
	int (*inode_getxattr) (struct dentry *dentry, char *name);
	int (*inode_listxattr) (struct dentry *dentry);
	int (*inode_removexattr) (struct dentry *dentry, char *name);
  	int (*inode_getsecurity)(struct inode *inode, const char *name, void *buffer, size_t size);
  	int (*inode_setsecurity)(struct inode *inode, const char *name, const void *value, size_t size, int flags);
  	int (*inode_listsecurity)(struct inode *inode, char *buffer, size_t buffer_size);

	int (*file_permission) (struct file * file, int mask);
	int (*file_alloc_security) (struct file * file);
	void (*file_free_security) (struct file * file);
	int (*file_ioctl) (struct file * file, unsigned int cmd,
			   unsigned long arg);
	int (*file_mmap) (struct file * file,
			  unsigned long reqprot,
			  unsigned long prot, unsigned long flags);
	int (*file_mprotect) (struct vm_area_struct * vma,
			      unsigned long reqprot,
			      unsigned long prot);
	int (*file_lock) (struct file * file, unsigned int cmd);
	int (*file_fcntl) (struct file * file, unsigned int cmd,
			   unsigned long arg);
	int (*file_set_fowner) (struct file * file);
	int (*file_send_sigiotask) (struct task_struct * tsk,
				    struct fown_struct * fown, int sig);
	int (*file_receive) (struct file * file);

	int (*task_create) (unsigned long clone_flags);
	int (*task_alloc_security) (struct task_struct * p);
	void (*task_free_security) (struct task_struct * p);
	int (*task_setuid) (uid_t id0, uid_t id1, uid_t id2, int flags);
	int (*task_post_setuid) (uid_t old_ruid /* or fsuid */ ,
				 uid_t old_euid, uid_t old_suid, int flags);
	int (*task_setgid) (gid_t id0, gid_t id1, gid_t id2, int flags);
	int (*task_setpgid) (struct task_struct * p, pid_t pgid);
	int (*task_getpgid) (struct task_struct * p);
	int (*task_getsid) (struct task_struct * p);
	int (*task_setgroups) (struct group_info *group_info);
	int (*task_setnice) (struct task_struct * p, int nice);
	int (*task_setrlimit) (unsigned int resource, struct rlimit * new_rlim);
	int (*task_setscheduler) (struct task_struct * p, int policy,
				  struct sched_param * lp);
	int (*task_getscheduler) (struct task_struct * p);
	int (*task_kill) (struct task_struct * p,
			  struct siginfo * info, int sig);
	int (*task_wait) (struct task_struct * p);
	int (*task_prctl) (int option, unsigned long arg2,
			   unsigned long arg3, unsigned long arg4,
			   unsigned long arg5);
	void (*task_reparent_to_init) (struct task_struct * p);
	void (*task_to_inode)(struct task_struct *p, struct inode *inode);

	int (*ipc_permission) (struct kern_ipc_perm * ipcp, short flag);

	int (*msg_msg_alloc_security) (struct msg_msg * msg);
	void (*msg_msg_free_security) (struct msg_msg * msg);

	int (*msg_queue_alloc_security) (struct msg_queue * msq);
	void (*msg_queue_free_security) (struct msg_queue * msq);
	int (*msg_queue_associate) (struct msg_queue * msq, int msqflg);
	int (*msg_queue_msgctl) (struct msg_queue * msq, int cmd);
	int (*msg_queue_msgsnd) (struct msg_queue * msq,
				 struct msg_msg * msg, int msqflg);
	int (*msg_queue_msgrcv) (struct msg_queue * msq,
				 struct msg_msg * msg,
				 struct task_struct * target,
				 long type, int mode);

	int (*shm_alloc_security) (struct shmid_kernel * shp);
	void (*shm_free_security) (struct shmid_kernel * shp);
	int (*shm_associate) (struct shmid_kernel * shp, int shmflg);
	int (*shm_shmctl) (struct shmid_kernel * shp, int cmd);
	int (*shm_shmat) (struct shmid_kernel * shp, 
			  char __user *shmaddr, int shmflg);

	int (*sem_alloc_security) (struct sem_array * sma);
	void (*sem_free_security) (struct sem_array * sma);
	int (*sem_associate) (struct sem_array * sma, int semflg);
	int (*sem_semctl) (struct sem_array * sma, int cmd);
	int (*sem_semop) (struct sem_array * sma, 
			  struct sembuf * sops, unsigned nsops, int alter);

	int (*netlink_send) (struct sock * sk, struct sk_buff * skb);
	int (*netlink_recv) (struct sk_buff * skb);

	/* allow module stacking */
	int (*register_security) (const char *name,
	                          struct security_operations *ops);
	int (*unregister_security) (const char *name,
	                            struct security_operations *ops);

	void (*d_instantiate) (struct dentry *dentry, struct inode *inode);

 	int (*getprocattr)(struct task_struct *p, char *name, void *value, size_t size);
 	int (*setprocattr)(struct task_struct *p, char *name, void *value, size_t size);

#ifdef CONFIG_SECURITY_NETWORK
	int (*unix_stream_connect) (struct socket * sock,
				    struct socket * other, struct sock * newsk);
	int (*unix_may_send) (struct socket * sock, struct socket * other);

	int (*socket_create) (int family, int type, int protocol, int kern);
	void (*socket_post_create) (struct socket * sock, int family,
				    int type, int protocol, int kern);
	int (*socket_bind) (struct socket * sock,
			    struct sockaddr * address, int addrlen);
	int (*socket_connect) (struct socket * sock,
			       struct sockaddr * address, int addrlen);
	int (*socket_listen) (struct socket * sock, int backlog);
	int (*socket_accept) (struct socket * sock, struct socket * newsock);
	void (*socket_post_accept) (struct socket * sock,
				    struct socket * newsock);
	int (*socket_sendmsg) (struct socket * sock,
			       struct msghdr * msg, int size);
	int (*socket_recvmsg) (struct socket * sock,
			       struct msghdr * msg, int size, int flags);
	int (*socket_getsockname) (struct socket * sock);
	int (*socket_getpeername) (struct socket * sock);
	int (*socket_getsockopt) (struct socket * sock, int level, int optname);
	int (*socket_setsockopt) (struct socket * sock, int level, int optname);
	int (*socket_shutdown) (struct socket * sock, int how);
	int (*socket_sock_rcv_skb) (struct sock * sk, struct sk_buff * skb);
	int (*socket_getpeersec) (struct socket *sock, char __user *optval, int __user *optlen, unsigned len);
	int (*sk_alloc_security) (struct sock *sk, int family, int priority);
	void (*sk_free_security) (struct sock *sk);
#endif	/* CONFIG_SECURITY_NETWORK */
};

/* global variables */
extern struct security_operations *security_ops;

/* inline stuff */
static inline int security_ptrace (struct task_struct * parent, struct task_struct * child)
{
	return security_ops->ptrace (parent, child);
}

static inline int security_capget (struct task_struct *target,
				   kernel_cap_t *effective,
				   kernel_cap_t *inheritable,
				   kernel_cap_t *permitted)
{
	return security_ops->capget (target, effective, inheritable, permitted);
}

static inline int security_capset_check (struct task_struct *target,
					 kernel_cap_t *effective,
					 kernel_cap_t *inheritable,
					 kernel_cap_t *permitted)
{
	return security_ops->capset_check (target, effective, inheritable, permitted);
}

static inline void security_capset_set (struct task_struct *target,
					kernel_cap_t *effective,
					kernel_cap_t *inheritable,
					kernel_cap_t *permitted)
{
	security_ops->capset_set (target, effective, inheritable, permitted);
}

static inline int security_acct (struct file *file)
{
	return security_ops->acct (file);
}

static inline int security_sysctl(struct ctl_table *table, int op)
{
	return security_ops->sysctl(table, op);
}

static inline int security_quotactl (int cmds, int type, int id,
				     struct super_block *sb)
{
	return security_ops->quotactl (cmds, type, id, sb);
}

static inline int security_quota_on (struct dentry * dentry)
{
	return security_ops->quota_on (dentry);
}

static inline int security_syslog(int type)
{
	return security_ops->syslog(type);
}

static inline int security_settime(struct timespec *ts, struct timezone *tz)
{
	return security_ops->settime(ts, tz);
}


static inline int security_vm_enough_memory(long pages)
{
	return security_ops->vm_enough_memory(pages);
}

static inline int security_bprm_alloc (struct linux_binprm *bprm)
{
	return security_ops->bprm_alloc_security (bprm);
}
static inline void security_bprm_free (struct linux_binprm *bprm)
{
	security_ops->bprm_free_security (bprm);
}
static inline void security_bprm_apply_creds (struct linux_binprm *bprm, int unsafe)
{
	security_ops->bprm_apply_creds (bprm, unsafe);
}
static inline void security_bprm_post_apply_creds (struct linux_binprm *bprm)
{
	security_ops->bprm_post_apply_creds (bprm);
}
static inline int security_bprm_set (struct linux_binprm *bprm)
{
	return security_ops->bprm_set_security (bprm);
}

static inline int security_bprm_check (struct linux_binprm *bprm)
{
	return security_ops->bprm_check_security (bprm);
}

static inline int security_bprm_secureexec (struct linux_binprm *bprm)
{
	return security_ops->bprm_secureexec (bprm);
}

static inline int security_sb_alloc (struct super_block *sb)
{
	return security_ops->sb_alloc_security (sb);
}

static inline void security_sb_free (struct super_block *sb)
{
	security_ops->sb_free_security (sb);
}

static inline int security_sb_copy_data (struct file_system_type *type,
					 void *orig, void *copy)
{
	return security_ops->sb_copy_data (type, orig, copy);
}

static inline int security_sb_kern_mount (struct super_block *sb, void *data)
{
	return security_ops->sb_kern_mount (sb, data);
}

static inline int security_sb_statfs (struct super_block *sb)
{
	return security_ops->sb_statfs (sb);
}

static inline int security_sb_mount (char *dev_name, struct nameidata *nd,
				    char *type, unsigned long flags,
				    void *data)
{
	return security_ops->sb_mount (dev_name, nd, type, flags, data);
}

static inline int security_sb_check_sb (struct vfsmount *mnt,
					struct nameidata *nd)
{
	return security_ops->sb_check_sb (mnt, nd);
}

static inline int security_sb_umount (struct vfsmount *mnt, int flags)
{
	return security_ops->sb_umount (mnt, flags);
}

static inline void security_sb_umount_close (struct vfsmount *mnt)
{
	security_ops->sb_umount_close (mnt);
}

static inline void security_sb_umount_busy (struct vfsmount *mnt)
{
	security_ops->sb_umount_busy (mnt);
}

static inline void security_sb_post_remount (struct vfsmount *mnt,
					     unsigned long flags, void *data)
{
	security_ops->sb_post_remount (mnt, flags, data);
}

static inline void security_sb_post_mountroot (void)
{
	security_ops->sb_post_mountroot ();
}

static inline void security_sb_post_addmount (struct vfsmount *mnt,
					      struct nameidata *mountpoint_nd)
{
	security_ops->sb_post_addmount (mnt, mountpoint_nd);
}

static inline int security_sb_pivotroot (struct nameidata *old_nd,
					 struct nameidata *new_nd)
{
	return security_ops->sb_pivotroot (old_nd, new_nd);
}

static inline void security_sb_post_pivotroot (struct nameidata *old_nd,
					       struct nameidata *new_nd)
{
	security_ops->sb_post_pivotroot (old_nd, new_nd);
}

static inline int security_inode_alloc (struct inode *inode)
{
	if (unlikely (IS_PRIVATE (inode)))
		return 0;
	return security_ops->inode_alloc_security (inode);
}

static inline void security_inode_free (struct inode *inode)
{
	if (unlikely (IS_PRIVATE (inode)))
		return;
	security_ops->inode_free_security (inode);
}

static inline int security_inode_init_security (struct inode *inode,
						struct inode *dir,
						char **name,
						void **value,
						size_t *len)
{
	if (unlikely (IS_PRIVATE (inode)))
		return -EOPNOTSUPP;
	return security_ops->inode_init_security (inode, dir, name, value, len);
}
	
static inline int security_inode_create (struct inode *dir,
					 struct dentry *dentry,
					 int mode)
{
	if (unlikely (IS_PRIVATE (dir)))
		return 0;
	return security_ops->inode_create (dir, dentry, mode);
}

static inline int security_inode_link (struct dentry *old_dentry,
				       struct inode *dir,
				       struct dentry *new_dentry)
{
	if (unlikely (IS_PRIVATE (old_dentry->d_inode)))
		return 0;
	return security_ops->inode_link (old_dentry, dir, new_dentry);
}

static inline int security_inode_unlink (struct inode *dir,
					 struct dentry *dentry)
{
	if (unlikely (IS_PRIVATE (dentry->d_inode)))
		return 0;
	return security_ops->inode_unlink (dir, dentry);
}

static inline int security_inode_symlink (struct inode *dir,
					  struct dentry *dentry,
					  const char *old_name)
{
	if (unlikely (IS_PRIVATE (dir)))
		return 0;
	return security_ops->inode_symlink (dir, dentry, old_name);
}

static inline int security_inode_mkdir (struct inode *dir,
					struct dentry *dentry,
					int mode)
{
	if (unlikely (IS_PRIVATE (dir)))
		return 0;
	return security_ops->inode_mkdir (dir, dentry, mode);
}

static inline int security_inode_rmdir (struct inode *dir,
					struct dentry *dentry)
{
	if (unlikely (IS_PRIVATE (dentry->d_inode)))
		return 0;
	return security_ops->inode_rmdir (dir, dentry);
}

static inline int security_inode_mknod (struct inode *dir,
					struct dentry *dentry,
					int mode, dev_t dev)
{
	if (unlikely (IS_PRIVATE (dir)))
		return 0;
	return security_ops->inode_mknod (dir, dentry, mode, dev);
}

static inline int security_inode_rename (struct inode *old_dir,
					 struct dentry *old_dentry,
					 struct inode *new_dir,
					 struct dentry *new_dentry)
{
        if (unlikely (IS_PRIVATE (old_dentry->d_inode) ||
            (new_dentry->d_inode && IS_PRIVATE (new_dentry->d_inode))))
		return 0;
	return security_ops->inode_rename (old_dir, old_dentry,
					   new_dir, new_dentry);
}

static inline int security_inode_readlink (struct dentry *dentry)
{
	if (unlikely (IS_PRIVATE (dentry->d_inode)))
		return 0;
	return security_ops->inode_readlink (dentry);
}

static inline int security_inode_follow_link (struct dentry *dentry,
					      struct nameidata *nd)
{
	if (unlikely (IS_PRIVATE (dentry->d_inode)))
		return 0;
	return security_ops->inode_follow_link (dentry, nd);
}

static inline int security_inode_permission (struct inode *inode, int mask,
					     struct nameidata *nd)
{
	if (unlikely (IS_PRIVATE (inode)))
		return 0;
	return security_ops->inode_permission (inode, mask, nd);
}

static inline int security_inode_setattr (struct dentry *dentry,
					  struct iattr *attr)
{
	if (unlikely (IS_PRIVATE (dentry->d_inode)))
		return 0;
	return security_ops->inode_setattr (dentry, attr);
}

static inline int security_inode_getattr (struct vfsmount *mnt,
					  struct dentry *dentry)
{
	if (unlikely (IS_PRIVATE (dentry->d_inode)))
		return 0;
	return security_ops->inode_getattr (mnt, dentry);
}

static inline void security_inode_delete (struct inode *inode)
{
	if (unlikely (IS_PRIVATE (inode)))
		return;
	security_ops->inode_delete (inode);
}

static inline int security_inode_setxattr (struct dentry *dentry, char *name,
					   void *value, size_t size, int flags)
{
	if (unlikely (IS_PRIVATE (dentry->d_inode)))
		return 0;
	return security_ops->inode_setxattr (dentry, name, value, size, flags);
}

static inline void security_inode_post_setxattr (struct dentry *dentry, char *name,
						void *value, size_t size, int flags)
{
	if (unlikely (IS_PRIVATE (dentry->d_inode)))
		return;
	security_ops->inode_post_setxattr (dentry, name, value, size, flags);
}

static inline int security_inode_getxattr (struct dentry *dentry, char *name)
{
	if (unlikely (IS_PRIVATE (dentry->d_inode)))
		return 0;
	return security_ops->inode_getxattr (dentry, name);
}

static inline int security_inode_listxattr (struct dentry *dentry)
{
	if (unlikely (IS_PRIVATE (dentry->d_inode)))
		return 0;
	return security_ops->inode_listxattr (dentry);
}

static inline int security_inode_removexattr (struct dentry *dentry, char *name)
{
	if (unlikely (IS_PRIVATE (dentry->d_inode)))
		return 0;
	return security_ops->inode_removexattr (dentry, name);
}

static inline int security_inode_getsecurity(struct inode *inode, const char *name, void *buffer, size_t size)
{
	if (unlikely (IS_PRIVATE (inode)))
		return 0;
	return security_ops->inode_getsecurity(inode, name, buffer, size);
}

static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
{
	if (unlikely (IS_PRIVATE (inode)))
		return 0;
	return security_ops->inode_setsecurity(inode, name, value, size, flags);
}

static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
{
	if (unlikely (IS_PRIVATE (inode)))
		return 0;
	return security_ops->inode_listsecurity(inode, buffer, buffer_size);
}

static inline int security_file_permission (struct file *file, int mask)
{
	return security_ops->file_permission (file, mask);
}

static inline int security_file_alloc (struct file *file)
{
	return security_ops->file_alloc_security (file);
}

static inline void security_file_free (struct file *file)
{
	security_ops->file_free_security (file);
}

static inline int security_file_ioctl (struct file *file, unsigned int cmd,
				       unsigned long arg)
{
	return security_ops->file_ioctl (file, cmd, arg);
}

static inline int security_file_mmap (struct file *file, unsigned long reqprot,
				      unsigned long prot,
				      unsigned long flags)
{
	return security_ops->file_mmap (file, reqprot, prot, flags);
}

static inline int security_file_mprotect (struct vm_area_struct *vma,
					  unsigned long reqprot,
					  unsigned long prot)
{
	return security_ops->file_mprotect (vma, reqprot, prot);
}

static inline int security_file_lock (struct file *file, unsigned int cmd)
{
	return security_ops->file_lock (file, cmd);
}

static inline int security_file_fcntl (struct file *file, unsigned int cmd,
				       unsigned long arg)
{
	return security_ops->file_fcntl (file, cmd, arg);
}

static inline int security_file_set_fowner (struct file *file)
{
	return security_ops->file_set_fowner (file);
}

static inline int security_file_send_sigiotask (struct task_struct *tsk,
						struct fown_struct *fown,
						int sig)
{
	return security_ops->file_send_sigiotask (tsk, fown, sig);
}

static inline int security_file_receive (struct file *file)
{
	return security_ops->file_receive (file);
}

static inline int security_task_create (unsigned long clone_flags)
{
	return security_ops->task_create (clone_flags);
}

static inline int security_task_alloc (struct task_struct *p)
{
	return security_ops->task_alloc_security (p);
}

static inline void security_task_free (struct task_struct *p)
{
	security_ops->task_free_security (p);
}

static inline int security_task_setuid (uid_t id0, uid_t id1, uid_t id2,
					int flags)
{
	return security_ops->task_setuid (id0, id1, id2, flags);
}

static inline int security_task_post_setuid (uid_t old_ruid, uid_t old_euid,
					     uid_t old_suid, int flags)
{
	return security_ops->task_post_setuid (old_ruid, old_euid, old_suid, flags);
}

static inline int security_task_setgid (gid_t id0, gid_t id1, gid_t id2,
					int flags)
{
	return security_ops->task_setgid (id0, id1, id2, flags);
}

static inline int security_task_setpgid (struct task_struct *p, pid_t pgid)
{
	return security_ops->task_setpgid (p, pgid);
}

static inline int security_task_getpgid (struct task_struct *p)
{
	return security_ops->task_getpgid (p);
}

static inline int security_task_getsid (struct task_struct *p)
{
	return security_ops->task_getsid (p);
}

static inline int security_task_setgroups (struct group_info *group_info)
{
	return security_ops->task_setgroups (group_info);
}

static inline int security_task_setnice (struct task_struct *p, int nice)
{
	return security_ops->task_setnice (p, nice);
}

static inline int security_task_setrlimit (unsigned int resource,
					   struct rlimit *new_rlim)
{
	return security_ops->task_setrlimit (resource, new_rlim);
}

static inline int security_task_setscheduler (struct task_struct *p,
					      int policy,
					      struct sched_param *lp)
{
	return security_ops->task_setscheduler (p, policy, lp);
}

static inline int security_task_getscheduler (struct task_struct *p)
{
	return security_ops->task_getscheduler (p);
}

static inline int security_task_kill (struct task_struct *p,
				      struct siginfo *info, int sig)
{
	return security_ops->task_kill (p, info, sig);
}

static inline int security_task_wait (struct task_struct *p)
{
	return security_ops->task_wait (p);
}

static inline int security_task_prctl (int option, unsigned long arg2,
				       unsigned long arg3,
				       unsigned long arg4,
				       unsigned long arg5)
{
	return security_ops->task_prctl (option, arg2, arg3, arg4, arg5);
}

static inline void security_task_reparent_to_init (struct task_struct *p)
{
	security_ops->task_reparent_to_init (p);
}

static inline void security_task_to_inode(struct task_struct *p, struct inode *inode)
{
	security_ops->task_to_inode(p, inode);
}

static inline int security_ipc_permission (struct kern_ipc_perm *ipcp,
					   short flag)
{
	return security_ops->ipc_permission (ipcp, flag);
}

static inline int security_msg_msg_alloc (struct msg_msg * msg)
{
	return security_ops->msg_msg_alloc_security (msg);
}

static inline void security_msg_msg_free (struct msg_msg * msg)
{
	security_ops->msg_msg_free_security(msg);
}

static inline int security_msg_queue_alloc (struct msg_queue *msq)
{
	return security_ops->msg_queue_alloc_security (msq);
}

static inline void security_msg_queue_free (struct msg_queue *msq)
{
	security_ops->msg_queue_free_security (msq);
}

static inline int security_msg_queue_associate (struct msg_queue * msq, 
						int msqflg)
{
	return security_ops->msg_queue_associate (msq, msqflg);
}

static inline int security_msg_queue_msgctl (struct msg_queue * msq, int cmd)
{
	return security_ops->msg_queue_msgctl (msq, cmd);
}

static inline int security_msg_queue_msgsnd (struct msg_queue * msq,
					     struct msg_msg * msg, int msqflg)
{
	return security_ops->msg_queue_msgsnd (msq, msg, msqflg);
}

static inline int security_msg_queue_msgrcv (struct msg_queue * msq,
					     struct msg_msg * msg,
					     struct task_struct * target,
					     long type, int mode)
{
	return security_ops->msg_queue_msgrcv (msq, msg, target, type, mode);
}

static inline int security_shm_alloc (struct shmid_kernel *shp)
{
	return security_ops->shm_alloc_security (shp);
}

static inline void security_shm_free (struct shmid_kernel *shp)
{
	security_ops->shm_free_security (shp);
}

static inline int security_shm_associate (struct shmid_kernel * shp, 
					  int shmflg)
{
	return security_ops->shm_associate(shp, shmflg);
}

static inline int security_shm_shmctl (struct shmid_kernel * shp, int cmd)
{
	return security_ops->shm_shmctl (shp, cmd);
}

static inline int security_shm_shmat (struct shmid_kernel * shp, 
				      char __user *shmaddr, int shmflg)
{
	return security_ops->shm_shmat(shp, shmaddr, shmflg);
}

static inline int security_sem_alloc (struct sem_array *sma)
{
	return security_ops->sem_alloc_security (sma);
}

static inline void security_sem_free (struct sem_array *sma)
{
	security_ops->sem_free_security (sma);
}

static inline int security_sem_associate (struct sem_array * sma, int semflg)
{
	return security_ops->sem_associate (sma, semflg);
}

static inline int security_sem_semctl (struct sem_array * sma, int cmd)
{
	return security_ops->sem_semctl(sma, cmd);
}

static inline int security_sem_semop (struct sem_array * sma, 
				      struct sembuf * sops, unsigned nsops, 
				      int alter)
{
	return security_ops->sem_semop(sma, sops, nsops, alter);
}

static inline void security_d_instantiate (struct dentry *dentry, struct inode *inode)
{
	if (unlikely (inode && IS_PRIVATE (inode)))
		return;
	security_ops->d_instantiate (dentry, inode);
}

static inline int security_getprocattr(struct task_struct *p, char *name, void *value, size_t size)
{
	return security_ops->getprocattr(p, name, value, size);
}

static inline int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size)
{
	return security_ops->setprocattr(p, name, value, size);
}

static inline int security_netlink_send(struct sock *sk, struct sk_buff * skb)
{
	return security_ops->netlink_send(sk, skb);
}

static inline int security_netlink_recv(struct sk_buff * skb)
{
	return security_ops->netlink_recv(skb);
}

/* prototypes */
extern int security_init	(void);
extern int register_security	(struct security_operations *ops);
extern int unregister_security	(struct security_operations *ops);
extern int mod_reg_security	(const char *name, struct security_operations *ops);
extern int mod_unreg_security	(const char *name, struct security_operations *ops);
extern struct dentry *securityfs_create_file(const char *name, mode_t mode,
					     struct dentry *parent, void *data,
					     struct file_operations *fops);
extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent);
extern void securityfs_remove(struct dentry *dentry);


#else /* CONFIG_SECURITY */

/*
 * This is the default capabilities functionality.  Most of these functions
 * are just stubbed out, but a few must call the proper capable code.
 */

static inline int security_init(void)
{
	return 0;
}

static inline int security_ptrace (struct task_struct *parent, struct task_struct * child)
{
	return cap_ptrace (parent, child);
}

static inline int security_capget (struct task_struct *target,
				   kernel_cap_t *effective,
				   kernel_cap_t *inheritable,
				   kernel_cap_t *permitted)
{
	return cap_capget (target, effective, inheritable, permitted);
}

static inline int security_capset_check (struct task_struct *target,
					 kernel_cap_t *effective,
					 kernel_cap_t *inheritable,
					 kernel_cap_t *permitted)
{
	return cap_capset_check (target, effective, inheritable, permitted);
}

static inline void security_capset_set (struct task_struct *target,
					kernel_cap_t *effective,
					kernel_cap_t *inheritable,
					kernel_cap_t *permitted)
{
	cap_capset_set (target, effective, inheritable, permitted);
}

static inline int security_acct (struct file *file)
{
	return 0;
}

static inline int security_sysctl(struct ctl_table *table, int op)
{
	return 0;
}

static inline int security_quotactl (int cmds, int type, int id,
				     struct super_block * sb)
{
	return 0;
}

static inline int security_quota_on (struct dentry * dentry)
{
	return 0;
}

static inline int security_syslog(int type)
{
	return cap_syslog(type);
}

static inline int security_settime(struct timespec *ts, struct timezone *tz)
{
	return cap_settime(ts, tz);
}

static inline int security_vm_enough_memory(long pages)
{
	return cap_vm_enough_memory(pages);
}

static inline int security_bprm_alloc (struct linux_binprm *bprm)
{
	return 0;
}

static inline void security_bprm_free (struct linux_binprm *bprm)
{ }

static inline void security_bprm_apply_creds (struct linux_binprm *bprm, int unsafe)
{ 
	cap_bprm_apply_creds (bprm, unsafe);
}

static inline void security_bprm_post_apply_creds (struct linux_binprm *bprm)
{
	return;
}

static inline int security_bprm_set (struct linux_binprm *bprm)
{
	return cap_bprm_set_security (bprm);
}

static inline int security_bprm_check (struct linux_binprm *bprm)
{
	return 0;
}

static inline int security_bprm_secureexec (struct linux_binprm *bprm)
{
	return cap_bprm_secureexec(bprm);
}

static inline int security_sb_alloc (struct super_block *sb)
{
	return 0;
}

static inline void security_sb_free (struct super_block *sb)
{ }

static inline int security_sb_copy_data (struct file_system_type *type,
					 void *orig, void *copy)
{
	return 0;
}

static inline int security_sb_kern_mount (struct super_block *sb, void *data)
{
	return 0;
}

static inline int security_sb_statfs (struct super_block *sb)
{
	return 0;
}

static inline int security_sb_mount (char *dev_name, struct nameidata *nd,
				    char *type, unsigned long flags,
				    void *data)
{
	return 0;
}

static inline int security_sb_check_sb (struct vfsmount *mnt,
					struct nameidata *nd)
{
	return 0;
}

static inline int security_sb_umount (struct vfsmount *mnt, int flags)
{
	return 0;
}

static inline void security_sb_umount_close (struct vfsmount *mnt)
{ }

static inline void security_sb_umount_busy (struct vfsmount *mnt)
{ }

static inline void security_sb_post_remount (struct vfsmount *mnt,
					     unsigned long flags, void *data)
{ }

static inline void security_sb_post_mountroot (void)
{ }

static inline void security_sb_post_addmount (struct vfsmount *mnt,
					      struct nameidata *mountpoint_nd)
{ }

static inline int security_sb_pivotroot (struct nameidata *old_nd,
					 struct nameidata *new_nd)
{
	return 0;
}

static inline void security_sb_post_pivotroot (struct nameidata *old_nd,
					       struct nameidata *new_nd)
{ }

static inline int security_inode_alloc (struct inode *inode)
{
	return 0;
}

static inline void security_inode_free (struct inode *inode)
{ }

static inline int security_inode_init_security (struct inode *inode,
						struct inode *dir,
						char **name,
						void **value,
						size_t *len)
{
	return -EOPNOTSUPP;
}
	
static inline int security_inode_create (struct inode *dir,
					 struct dentry *dentry,
					 int mode)
{
	return 0;
}

static inline int security_inode_link (struct dentry *old_dentry,
				       struct inode *dir,
				       struct dentry *new_dentry)
{
	return 0;
}

static inline int security_inode_unlink (struct inode *dir,
					 struct dentry *dentry)
{
	return 0;
}

static inline int security_inode_symlink (struct inode *dir,
					  struct dentry *dentry,
					  const char *old_name)
{
	return 0;
}

static inline int security_inode_mkdir (struct inode *dir,
					struct dentry *dentry,
					int mode)
{
	return 0;
}

static inline int security_inode_rmdir (struct inode *dir,
					struct dentry *dentry)
{
	return 0;
}

static inline int security_inode_mknod (struct inode *dir,
					struct dentry *dentry,
					int mode, dev_t dev)
{
	return 0;
}

static inline int security_inode_rename (struct inode *old_dir,
					 struct dentry *old_dentry,
					 struct inode *new_dir,
					 struct dentry *new_dentry)
{
	return 0;
}

static inline int security_inode_readlink (struct dentry *dentry)
{
	return 0;
}

static inline int security_inode_follow_link (struct dentry *dentry,
					      struct nameidata *nd)
{
	return 0;
}

static inline int security_inode_permission (struct inode *inode, int mask,
					     struct nameidata *nd)
{
	return 0;
}

static inline int security_inode_setattr (struct dentry *dentry,
					  struct iattr *attr)
{
	return 0;
}

static inline int security_inode_getattr (struct vfsmount *mnt,
					  struct dentry *dentry)
{
	return 0;
}

static inline void security_inode_delete (struct inode *inode)
{ }

static inline int security_inode_setxattr (struct dentry *dentry, char *name,
					   void *value, size_t size, int flags)
{
	return cap_inode_setxattr(dentry, name, value, size, flags);
}

static inline void security_inode_post_setxattr (struct dentry *dentry, char *name,
						 void *value, size_t size, int flags)
{ }

static inline int security_inode_getxattr (struct dentry *dentry, char *name)
{
	return 0;
}

static inline int security_inode_listxattr (struct dentry *dentry)
{
	return 0;
}

static inline int security_inode_removexattr (struct dentry *dentry, char *name)
{
	return cap_inode_removexattr(dentry, name);
}

static inline int security_inode_getsecurity(struct inode *inode, const char *name, void *buffer, size_t size)
{
	return -EOPNOTSUPP;
}

static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
{
	return -EOPNOTSUPP;
}

static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
{
	return 0;
}

static inline int security_file_permission (struct file *file, int mask)
{
	return 0;
}

static inline int security_file_alloc (struct file *file)
{
	return 0;
}

static inline void security_file_free (struct file *file)
{ }

static inline int security_file_ioctl (struct file *file, unsigned int cmd,
				       unsigned long arg)
{
	return 0;
}

static inline int security_file_mmap (struct file *file, unsigned long reqprot,
				      unsigned long prot,
				      unsigned long flags)
{
	return 0;
}

static inline int security_file_mprotect (struct vm_area_struct *vma,
					  unsigned long reqprot,
					  unsigned long prot)
{
	return 0;
}

static inline int security_file_lock (struct file *file, unsigned int cmd)
{
	return 0;
}

static inline int security_file_fcntl (struct file *file, unsigned int cmd,
				       unsigned long arg)
{
	return 0;
}

static inline int security_file_set_fowner (struct file *file)
{
	return 0;
}

static inline int security_file_send_sigiotask (struct task_struct *tsk,
						struct fown_struct *fown,
						int sig)
{
	return 0;
}

static inline int security_file_receive (struct file *file)
{
	return 0;
}

static inline int security_task_create (unsigned long clone_flags)
{
	return 0;
}

static inline int security_task_alloc (struct task_struct *p)
{
	return 0;
}

static inline void security_task_free (struct task_struct *p)
{ }

static inline int security_task_setuid (uid_t id0, uid_t id1, uid_t id2,
					int flags)
{
	return 0;
}

static inline int security_task_post_setuid (uid_t old_ruid, uid_t old_euid,
					     uid_t old_suid, int flags)
{
	return cap_task_post_setuid (old_ruid, old_euid, old_suid, flags);
}

static inline int security_task_setgid (gid_t id0, gid_t id1, gid_t id2,
					int flags)
{
	return 0;
}

static inline int security_task_setpgid (struct task_struct *p, pid_t pgid)
{
	return 0;
}

static inline int security_task_getpgid (struct task_struct *p)
{
	return 0;
}

static inline int security_task_getsid (struct task_struct *p)
{
	return 0;
}

static inline int security_task_setgroups (struct group_info *group_info)
{
	return 0;
}

static inline int security_task_setnice (struct task_struct *p, int nice)
{
	return 0;
}

static inline int security_task_setrlimit (unsigned int resource,
					   struct rlimit *new_rlim)
{
	return 0;
}

static inline int security_task_setscheduler (struct task_struct *p,
					      int policy,
					      struct sched_param *lp)
{
	return 0;
}

static inline int security_task_getscheduler (struct task_struct *p)
{
	return 0;
}

static inline int security_task_kill (struct task_struct *p,
				      struct siginfo *info, int sig)
{
	return 0;
}

static inline int security_task_wait (struct task_struct *p)
{
	return 0;
}

static inline int security_task_prctl (int option, unsigned long arg2,
				       unsigned long arg3,
				       unsigned long arg4,
				       unsigned long arg5)
{
	return 0;
}

static inline void security_task_reparent_to_init (struct task_struct *p)
{
	cap_task_reparent_to_init (p);
}

static inline void security_task_to_inode(struct task_struct *p, struct inode *inode)
{ }

static inline int security_ipc_permission (struct kern_ipc_perm *ipcp,
					   short flag)
{
	return 0;
}

static inline int security_msg_msg_alloc (struct msg_msg * msg)
{
	return 0;
}

static inline void security_msg_msg_free (struct msg_msg * msg)
{ }

static inline int security_msg_queue_alloc (struct msg_queue *msq)
{
	return 0;
}

static inline void security_msg_queue_free (struct msg_queue *msq)
{ }

static inline int security_msg_queue_associate (struct msg_queue * msq, 
						int msqflg)
{
	return 0;
}

static inline int security_msg_queue_msgctl (struct msg_queue * msq, int cmd)
{
	return 0;
}

static inline int security_msg_queue_msgsnd (struct msg_queue * msq,
					     struct msg_msg * msg, int msqflg)
{
	return 0;
}

static inline int security_msg_queue_msgrcv (struct msg_queue * msq,
					     struct msg_msg * msg,
					     struct task_struct * target,
					     long type, int mode)
{
	return 0;
}

static inline int security_shm_alloc (struct shmid_kernel *shp)
{
	return 0;
}

static inline void security_shm_free (struct shmid_kernel *shp)
{ }

static inline int security_shm_associate (struct shmid_kernel * shp, 
					  int shmflg)
{
	return 0;
}

static inline int security_shm_shmctl (struct shmid_kernel * shp, int cmd)
{
	return 0;
}

static inline int security_shm_shmat (struct shmid_kernel * shp, 
				      char __user *shmaddr, int shmflg)
{
	return 0;
}

static inline int security_sem_alloc (struct sem_array *sma)
{
	return 0;
}

static inline void security_sem_free (struct sem_array *sma)
{ }

static inline int security_sem_associate (struct sem_array * sma, int semflg)
{
	return 0;
}

static inline int security_sem_semctl (struct sem_array * sma, int cmd)
{
	return 0;
}

static inline int security_sem_semop (struct sem_array * sma, 
				      struct sembuf * sops, unsigned nsops, 
				      int alter)
{
	return 0;
}

static inline void security_d_instantiate (struct dentry *dentry, struct inode *inode)
{ }

static inline int security_getprocattr(struct task_struct *p, char *name, void *value, size_t size)
{
	return -EINVAL;
}

static inline int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size)
{
	return -EINVAL;
}

static inline int security_netlink_send (struct sock *sk, struct sk_buff *skb)
{
	return cap_netlink_send (sk, skb);
}

static inline int security_netlink_recv (struct sk_buff *skb)
{
	return cap_netlink_recv (skb);
}

#endif	/* CONFIG_SECURITY */

#ifdef CONFIG_SECURITY_NETWORK
static inline int security_unix_stream_connect(struct socket * sock,
					       struct socket * other, 
					       struct sock * newsk)
{
	return security_ops->unix_stream_connect(sock, other, newsk);
}


static inline int security_unix_may_send(struct socket * sock, 
					 struct socket * other)
{
	return security_ops->unix_may_send(sock, other);
}

static inline int security_socket_create (int family, int type,
					  int protocol, int kern)
{
	return security_ops->socket_create(family, type, protocol, kern);
}

static inline void security_socket_post_create(struct socket * sock, 
					       int family,
					       int type, 
					       int protocol, int kern)
{
	security_ops->socket_post_create(sock, family, type,
					 protocol, kern);
}

static inline int security_socket_bind(struct socket * sock, 
				       struct sockaddr * address, 
				       int addrlen)
{
	return security_ops->socket_bind(sock, address, addrlen);
}

static inline int security_socket_connect(struct socket * sock, 
					  struct sockaddr * address, 
					  int addrlen)
{
	return security_ops->socket_connect(sock, address, addrlen);
}

static inline int security_socket_listen(struct socket * sock, int backlog)
{
	return security_ops->socket_listen(sock, backlog);
}

static inline int security_socket_accept(struct socket * sock, 
					 struct socket * newsock)
{
	return security_ops->socket_accept(sock, newsock);
}

static inline void security_socket_post_accept(struct socket * sock, 
					       struct socket * newsock)
{
	security_ops->socket_post_accept(sock, newsock);
}

static inline int security_socket_sendmsg(struct socket * sock, 
					  struct msghdr * msg, int size)
{
	return security_ops->socket_sendmsg(sock, msg, size);
}

static inline int security_socket_recvmsg(struct socket * sock, 
					  struct msghdr * msg, int size, 
					  int flags)
{
	return security_ops->socket_recvmsg(sock, msg, size, flags);
}

static inline int security_socket_getsockname(struct socket * sock)
{
	return security_ops->socket_getsockname(sock);
}

static inline int security_socket_getpeername(struct socket * sock)
{
	return security_ops->socket_getpeername(sock);
}

static inline int security_socket_getsockopt(struct socket * sock, 
					     int level, int optname)
{
	return security_ops->socket_getsockopt(sock, level, optname);
}

static inline int security_socket_setsockopt(struct socket * sock, 
					     int level, int optname)
{
	return security_ops->socket_setsockopt(sock, level, optname);
}

static inline int security_socket_shutdown(struct socket * sock, int how)
{
	return security_ops->socket_shutdown(sock, how);
}

static inline int security_sock_rcv_skb (struct sock * sk, 
					 struct sk_buff * skb)
{
	return security_ops->socket_sock_rcv_skb (sk, skb);
}

static inline int security_socket_getpeersec(struct socket *sock, char __user *optval,
					     int __user *optlen, unsigned len)
{
	return security_ops->socket_getpeersec(sock, optval, optlen, len);
}

static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
{
	return security_ops->sk_alloc_security(sk, family, priority);
}

static inline void security_sk_free(struct sock *sk)
{
	return security_ops->sk_free_security(sk);
}
#else	/* CONFIG_SECURITY_NETWORK */
static inline int security_unix_stream_connect(struct socket * sock,
					       struct socket * other, 
					       struct sock * newsk)
{
	return 0;
}

static inline int security_unix_may_send(struct socket * sock, 
					 struct socket * other)
{
	return 0;
}

static inline int security_socket_create (int family, int type,
					  int protocol, int kern)
{
	return 0;
}

static inline void security_socket_post_create(struct socket * sock, 
					       int family,
					       int type, 
					       int protocol, int kern)
{
}

static inline int security_socket_bind(struct socket * sock, 
				       struct sockaddr * address, 
				       int addrlen)
{
	return 0;
}

static inline int security_socket_connect(struct socket * sock, 
					  struct sockaddr * address, 
					  int addrlen)
{
	return 0;
}

static inline int security_socket_listen(struct socket * sock, int backlog)
{
	return 0;
}

static inline int security_socket_accept(struct socket * sock, 
					 struct socket * newsock)
{
	return 0;
}

static inline void security_socket_post_accept(struct socket * sock, 
					       struct socket * newsock)
{
}

static inline int security_socket_sendmsg(struct socket * sock, 
					  struct msghdr * msg, int size)
{
	return 0;
}

static inline int security_socket_recvmsg(struct socket * sock, 
					  struct msghdr * msg, int size, 
					  int flags)
{
	return 0;
}

static inline int security_socket_getsockname(struct socket * sock)
{
	return 0;
}

static inline int security_socket_getpeername(struct socket * sock)
{
	return 0;
}

static inline int security_socket_getsockopt(struct socket * sock, 
					     int level, int optname)
{
	return 0;
}

static inline int security_socket_setsockopt(struct socket * sock, 
					     int level, int optname)
{
	return 0;
}

static inline int security_socket_shutdown(struct socket * sock, int how)
{
	return 0;
}
static inline int security_sock_rcv_skb (struct sock * sk, 
					 struct sk_buff * skb)
{
	return 0;
}

static inline int security_socket_getpeersec(struct socket *sock, char __user *optval,
					     int __user *optlen, unsigned len)
{
	return -ENOPROTOOPT;
}

static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
{
	return 0;
}

static inline void security_sk_free(struct sock *sk)
{
}
#endif	/* CONFIG_SECURITY_NETWORK */

#endif /* ! __LINUX_SECURITY_H */