summaryrefslogtreecommitdiffstats
path: root/include/linux/syscalls.h
blob: e07a83f9f093b3ba75b5e2a98ec6980ad326d8c1 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
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
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * syscalls.h - Linux syscall interfaces (non-arch-specific)
 *
 * Copyright (c) 2004 Randy Dunlap
 * Copyright (c) 2004 Open Source Development Labs
 */

#ifndef _LINUX_SYSCALLS_H
#define _LINUX_SYSCALLS_H

struct __aio_sigset;
struct epoll_event;
struct iattr;
struct inode;
struct iocb;
struct io_event;
struct iovec;
struct __kernel_old_itimerval;
struct kexec_segment;
struct linux_dirent;
struct linux_dirent64;
struct list_head;
struct mmap_arg_struct;
struct msgbuf;
struct user_msghdr;
struct mmsghdr;
struct msqid_ds;
struct new_utsname;
struct nfsctl_arg;
struct __old_kernel_stat;
struct oldold_utsname;
struct old_utsname;
struct pollfd;
struct rlimit;
struct rlimit64;
struct rusage;
struct sched_param;
struct sched_attr;
struct sel_arg_struct;
struct semaphore;
struct sembuf;
struct shmid_ds;
struct sockaddr;
struct stat;
struct stat64;
struct statfs;
struct statfs64;
struct statx;
struct __sysctl_args;
struct sysinfo;
struct timespec;
struct __kernel_old_timeval;
struct __kernel_timex;
struct timezone;
struct tms;
struct utimbuf;
struct mq_attr;
struct compat_stat;
struct old_timeval32;
struct robust_list_head;
struct getcpu_cache;
struct old_linux_dirent;
struct perf_event_attr;
struct file_handle;
struct sigaltstack;
struct rseq;
union bpf_attr;
struct io_uring_params;
struct clone_args;
struct open_how;

#include <linux/types.h>
#include <linux/aio_abi.h>
#include <linux/capability.h>
#include <linux/signal.h>
#include <linux/list.h>
#include <linux/bug.h>
#include <linux/sem.h>
#include <asm/siginfo.h>
#include <linux/unistd.h>
#include <linux/quota.h>
#include <linux/key.h>
#include <linux/personality.h>
#include <trace/syscall.h>

#ifdef CONFIG_ARCH_HAS_SYSCALL_WRAPPER
/*
 * It may be useful for an architecture to override the definitions of the
 * SYSCALL_DEFINE0() and __SYSCALL_DEFINEx() macros, in particular to use a
 * different calling convention for syscalls. To allow for that, the prototypes
 * for the sys_*() functions below will *not* be included if
 * CONFIG_ARCH_HAS_SYSCALL_WRAPPER is enabled.
 */
#include <asm/syscall_wrapper.h>
#endif /* CONFIG_ARCH_HAS_SYSCALL_WRAPPER */

/*
 * __MAP - apply a macro to syscall arguments
 * __MAP(n, m, t1, a1, t2, a2, ..., tn, an) will expand to
 *    m(t1, a1), m(t2, a2), ..., m(tn, an)
 * The first argument must be equal to the amount of type/name
 * pairs given.  Note that this list of pairs (i.e. the arguments
 * of __MAP starting at the third one) is in the same format as
 * for SYSCALL_DEFINE<n>/COMPAT_SYSCALL_DEFINE<n>
 */
#define __MAP0(m,...)
#define __MAP1(m,t,a,...) m(t,a)
#define __MAP2(m,t,a,...) m(t,a), __MAP1(m,__VA_ARGS__)
#define __MAP3(m,t,a,...) m(t,a), __MAP2(m,__VA_ARGS__)
#define __MAP4(m,t,a,...) m(t,a), __MAP3(m,__VA_ARGS__)
#define __MAP5(m,t,a,...) m(t,a), __MAP4(m,__VA_ARGS__)
#define __MAP6(m,t,a,...) m(t,a), __MAP5(m,__VA_ARGS__)
#define __MAP(n,...) __MAP##n(__VA_ARGS__)

#define __SC_DECL(t, a)	t a
#define __TYPE_AS(t, v)	__same_type((__force t)0, v)
#define __TYPE_IS_L(t)	(__TYPE_AS(t, 0L))
#define __TYPE_IS_UL(t)	(__TYPE_AS(t, 0UL))
#define __TYPE_IS_LL(t) (__TYPE_AS(t, 0LL) || __TYPE_AS(t, 0ULL))
#define __SC_LONG(t, a) __typeof(__builtin_choose_expr(__TYPE_IS_LL(t), 0LL, 0L)) a
#define __SC_CAST(t, a)	(__force t) a
#define __SC_ARGS(t, a)	a
#define __SC_TEST(t, a) (void)BUILD_BUG_ON_ZERO(!__TYPE_IS_LL(t) && sizeof(t) > sizeof(long))

#ifdef CONFIG_FTRACE_SYSCALLS
#define __SC_STR_ADECL(t, a)	#a
#define __SC_STR_TDECL(t, a)	#t

extern struct trace_event_class event_class_syscall_enter;
extern struct trace_event_class event_class_syscall_exit;
extern struct trace_event_functions enter_syscall_print_funcs;
extern struct trace_event_functions exit_syscall_print_funcs;

#define SYSCALL_TRACE_ENTER_EVENT(sname)				\
	static struct syscall_metadata __syscall_meta_##sname;		\
	static struct trace_event_call __used				\
	  event_enter_##sname = {					\
		.class			= &event_class_syscall_enter,	\
		{							\
			.name                   = "sys_enter"#sname,	\
		},							\
		.event.funcs            = &enter_syscall_print_funcs,	\
		.data			= (void *)&__syscall_meta_##sname,\
		.flags                  = TRACE_EVENT_FL_CAP_ANY,	\
	};								\
	static struct trace_event_call __used				\
	  __attribute__((section("_ftrace_events")))			\
	 *__event_enter_##sname = &event_enter_##sname;

#define SYSCALL_TRACE_EXIT_EVENT(sname)					\
	static struct syscall_metadata __syscall_meta_##sname;		\
	static struct trace_event_call __used				\
	  event_exit_##sname = {					\
		.class			= &event_class_syscall_exit,	\
		{							\
			.name                   = "sys_exit"#sname,	\
		},							\
		.event.funcs		= &exit_syscall_print_funcs,	\
		.data			= (void *)&__syscall_meta_##sname,\
		.flags                  = TRACE_EVENT_FL_CAP_ANY,	\
	};								\
	static struct trace_event_call __used				\
	  __attribute__((section("_ftrace_events")))			\
	*__event_exit_##sname = &event_exit_##sname;

#define SYSCALL_METADATA(sname, nb, ...)			\
	static const char *types_##sname[] = {			\
		__MAP(nb,__SC_STR_TDECL,__VA_ARGS__)		\
	};							\
	static const char *args_##sname[] = {			\
		__MAP(nb,__SC_STR_ADECL,__VA_ARGS__)		\
	};							\
	SYSCALL_TRACE_ENTER_EVENT(sname);			\
	SYSCALL_TRACE_EXIT_EVENT(sname);			\
	static struct syscall_metadata __used			\
	  __syscall_meta_##sname = {				\
		.name 		= "sys"#sname,			\
		.syscall_nr	= -1,	/* Filled in at boot */	\
		.nb_args 	= nb,				\
		.types		= nb ? types_##sname : NULL,	\
		.args		= nb ? args_##sname : NULL,	\
		.enter_event	= &event_enter_##sname,		\
		.exit_event	= &event_exit_##sname,		\
		.enter_fields	= LIST_HEAD_INIT(__syscall_meta_##sname.enter_fields), \
	};							\
	static struct syscall_metadata __used			\
	  __attribute__((section("__syscalls_metadata")))	\
	 *__p_syscall_meta_##sname = &__syscall_meta_##sname;

static inline int is_syscall_trace_event(struct trace_event_call *tp_event)
{
	return tp_event->class == &event_class_syscall_enter ||
	       tp_event->class == &event_class_syscall_exit;
}

#else
#define SYSCALL_METADATA(sname, nb, ...)

static inline int is_syscall_trace_event(struct trace_event_call *tp_event)
{
	return 0;
}
#endif

#ifndef SYSCALL_DEFINE0
#define SYSCALL_DEFINE0(sname)					\
	SYSCALL_METADATA(_##sname, 0);				\
	asmlinkage long sys_##sname(void);			\
	ALLOW_ERROR_INJECTION(sys_##sname, ERRNO);		\
	asmlinkage long sys_##sname(void)
#endif /* SYSCALL_DEFINE0 */

#define SYSCALL_DEFINE1(name, ...) SYSCALL_DEFINEx(1, _##name, __VA_ARGS__)
#define SYSCALL_DEFINE2(name, ...) SYSCALL_DEFINEx(2, _##name, __VA_ARGS__)
#define SYSCALL_DEFINE3(name, ...) SYSCALL_DEFINEx(3, _##name, __VA_ARGS__)
#define SYSCALL_DEFINE4(name, ...) SYSCALL_DEFINEx(4, _##name, __VA_ARGS__)
#define SYSCALL_DEFINE5(name, ...) SYSCALL_DEFINEx(5, _##name, __VA_ARGS__)
#define SYSCALL_DEFINE6(name, ...) SYSCALL_DEFINEx(6, _##name, __VA_ARGS__)

#define SYSCALL_DEFINE_MAXARGS	6

#define SYSCALL_DEFINEx(x, sname, ...)				\
	SYSCALL_METADATA(sname, x, __VA_ARGS__)			\
	__SYSCALL_DEFINEx(x, sname, __VA_ARGS__)

#define __PROTECT(...) asmlinkage_protect(__VA_ARGS__)

/*
 * The asmlinkage stub is aliased to a function named __se_sys_*() which
 * sign-extends 32-bit ints to longs whenever needed. The actual work is
 * done within __do_sys_*().
 */
#ifndef __SYSCALL_DEFINEx
#define __SYSCALL_DEFINEx(x, name, ...)					\
	__diag_push();							\
	__diag_ignore(GCC, 8, "-Wattribute-alias",			\
		      "Type aliasing is used to sanitize syscall arguments");\
	asmlinkage long sys##name(__MAP(x,__SC_DECL,__VA_ARGS__))	\
		__attribute__((alias(__stringify(__se_sys##name))));	\
	ALLOW_ERROR_INJECTION(sys##name, ERRNO);			\
	static inline long __do_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__));\
	asmlinkage long __se_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__));	\
	asmlinkage long __se_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__))	\
	{								\
		long ret = __do_sys##name(__MAP(x,__SC_CAST,__VA_ARGS__));\
		__MAP(x,__SC_TEST,__VA_ARGS__);				\
		__PROTECT(x, ret,__MAP(x,__SC_ARGS,__VA_ARGS__));	\
		return ret;						\
	}								\
	__diag_pop();							\
	static inline long __do_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__))
#endif /* __SYSCALL_DEFINEx */

/*
 * Called before coming back to user-mode. Returning to user-mode with an
 * address limit different than USER_DS can allow to overwrite kernel memory.
 */
static inline void addr_limit_user_check(void)
{
#ifdef TIF_FSCHECK
	if (!test_thread_flag(TIF_FSCHECK))
		return;
#endif

	if (CHECK_DATA_CORRUPTION(!segment_eq(get_fs(), USER_DS),
				  "Invalid address limit on user-mode return"))
		force_sig(SIGKILL);

#ifdef TIF_FSCHECK
	clear_thread_flag(TIF_FSCHECK);
#endif
}

/*
 * These syscall function prototypes are kept in the same order as
 * include/uapi/asm-generic/unistd.h. Architecture specific entries go below,
 * followed by deprecated or obsolete system calls.
 *
 * Please note that these prototypes here are only provided for information
 * purposes, for static analysis, and for linking from the syscall table.
 * These functions should not be called elsewhere from kernel code.
 *
 * As the syscall calling convention may be different from the default
 * for architectures overriding the syscall calling convention, do not
 * include the prototypes if CONFIG_ARCH_HAS_SYSCALL_WRAPPER is enabled.
 */
#ifndef CONFIG_ARCH_HAS_SYSCALL_WRAPPER
asmlinkage long sys_io_setup(unsigned nr_reqs, aio_context_t __user *ctx);
asmlinkage long sys_io_destroy(aio_context_t ctx);
asmlinkage long sys_io_submit(aio_context_t, long,
			struct iocb __user * __user *);
asmlinkage long sys_io_cancel(aio_context_t ctx_id, struct iocb __user *iocb,
			      struct io_event __user *result);
asmlinkage long sys_io_getevents(aio_context_t ctx_id,
				long min_nr,
				long nr,
				struct io_event __user *events,
				struct __kernel_timespec __user *timeout);
asmlinkage long sys_io_getevents_time32(__u32 ctx_id,
				__s32 min_nr,
				__s32 nr,
				struct io_event __user *events,
				struct old_timespec32 __user *timeout);
asmlinkage long sys_io_pgetevents(aio_context_t ctx_id,
				long min_nr,
				long nr,
				struct io_event __user *events,
				struct __kernel_timespec __user *timeout,
				const struct __aio_sigset *sig);
asmlinkage long sys_io_pgetevents_time32(aio_context_t ctx_id,
				long min_nr,
				long nr,
				struct io_event __user *events,
				struct old_timespec32 __user *timeout,
				const struct __aio_sigset *sig);
asmlinkage long sys_io_uring_setup(u32 entries,
				struct io_uring_params __user *p);
asmlinkage long sys_io_uring_enter(unsigned int fd, u32 to_submit,
				u32 min_complete, u32 flags,
				const sigset_t __user *sig, size_t sigsz);
asmlinkage long sys_io_uring_register(unsigned int fd, unsigned int op,
				void __user *arg, unsigned int nr_args);

/* fs/xattr.c */
asmlinkage long sys_setxattr(const char __user *path, const char __user *name,
			     const void __user *value, size_t size, int flags);
asmlinkage long sys_lsetxattr(const char __user *path, const char __user *name,
			      const void __user *value, size_t size, int flags);
asmlinkage long sys_fsetxattr(int fd, const char __user *name,
			      const void __user *value, size_t size, int flags);
asmlinkage long sys_getxattr(const char __user *path, const char __user *name,
			     void __user *value, size_t size);
asmlinkage long sys_lgetxattr(const char __user *path, const char __user *name,
			      void __user *value, size_t size);
asmlinkage long sys_fgetxattr(int fd, const char __user *name,
			      void __user *value, size_t size);
asmlinkage long sys_listxattr(const char __user *path, char __user *list,
			      size_t size);
asmlinkage long sys_llistxattr(const char __user *path, char __user *list,
			       size_t size);
asmlinkage long sys_flistxattr(int fd, char __user *list, size_t size);
asmlinkage long sys_removexattr(const char __user *path,
				const char __user *name);
asmlinkage long sys_lremovexattr(const char __user *path,
				 const char __user *name);
asmlinkage long sys_fremovexattr(int fd, const char __user *name);

/* fs/dcache.c */
asmlinkage long sys_getcwd(char __user *buf, unsigned long size);

/* fs/cookies.c */
asmlinkage long sys_lookup_dcookie(u64 cookie64, char __user *buf, size_t len);

/* fs/eventfd.c */
asmlinkage long sys_eventfd2(unsigned int count, int flags);

/* fs/eventpoll.c */
asmlinkage long sys_epoll_create1(int flags);
asmlinkage long sys_epoll_ctl(int epfd, int op, int fd,
				struct epoll_event __user *event);
asmlinkage long sys_epoll_pwait(int epfd, struct epoll_event __user *events,
				int maxevents, int timeout,
				const sigset_t __user *sigmask,
				size_t sigsetsize);

/* fs/fcntl.c */
asmlinkage long sys_dup(unsigned int fildes);
asmlinkage long sys_dup3(unsigned int oldfd, unsigned int newfd, int flags);
asmlinkage long sys_fcntl(unsigned int fd, unsigned int cmd, unsigned long arg);
#if BITS_PER_LONG == 32
asmlinkage long sys_fcntl64(unsigned int fd,
				unsigned int cmd, unsigned long arg);
#endif

/* fs/inotify_user.c */
asmlinkage long sys_inotify_init1(int flags);
asmlinkage long sys_inotify_add_watch(int fd, const char __user *path,
					u32 mask);
asmlinkage long sys_inotify_rm_watch(int fd, __s32 wd);

/* fs/ioctl.c */
asmlinkage long sys_ioctl(unsigned int fd, unsigned int cmd,
				unsigned long arg);

/* fs/ioprio.c */
asmlinkage long sys_ioprio_set(int which, int who, int ioprio);
asmlinkage long sys_ioprio_get(int which, int who);

/* fs/locks.c */
asmlinkage long sys_flock(unsigned int fd, unsigned int cmd);

/* fs/namei.c */
asmlinkage long sys_mknodat(int dfd, const char __user * filename, umode_t mode,
			    unsigned dev);
asmlinkage long sys_mkdirat(int dfd, const char __user * pathname, umode_t mode);
asmlinkage long sys_unlinkat(int dfd, const char __user * pathname, int flag);
asmlinkage long sys_symlinkat(const char __user * oldname,
			      int newdfd, const char __user * newname);
asmlinkage long sys_linkat(int olddfd, const char __user *oldname,
			   int newdfd, const char __user *newname, int flags);
asmlinkage long sys_renameat(int olddfd, const char __user * oldname,
			     int newdfd, const char __user * newname);

/* fs/namespace.c */
asmlinkage long sys_umount(char __user *name, int flags);
asmlinkage long sys_mount(char __user *dev_name, char __user *dir_name,
				char __user *type, unsigned long flags,
				void __user *data);
asmlinkage long sys_pivot_root(const char __user *new_root,
				const char __user *put_old);

/* fs/nfsctl.c */

/* fs/open.c */
asmlinkage long sys_statfs(const char __user * path,
				struct statfs __user *buf);
asmlinkage long sys_statfs64(const char __user *path, size_t sz,
				struct statfs64 __user *buf);
asmlinkage long sys_fstatfs(unsigned int fd, struct statfs __user *buf);
asmlinkage long sys_fstatfs64(unsigned int fd, size_t sz,
				struct statfs64 __user *buf);
asmlinkage long sys_truncate(const char __user *path, long length);
asmlinkage long sys_ftruncate(unsigned int fd, unsigned long length);
#if BITS_PER_LONG == 32
asmlinkage long sys_truncate64(const char __user *path, loff_t length);
asmlinkage long sys_ftruncate64(unsigned int fd, loff_t length);
#endif
asmlinkage long sys_fallocate(int fd, int mode, loff_t offset, loff_t len);
asmlinkage long sys_faccessat(int dfd, const char __user *filename, int mode);
asmlinkage long sys_faccessat2(int dfd, const char __user *filename, int mode,
			       int flags);
asmlinkage long sys_chdir(const char __user *filename);
asmlinkage long sys_fchdir(unsigned int fd);
asmlinkage long sys_chroot(const char __user *filename);
asmlinkage long sys_fchmod(unsigned int fd, umode_t mode);
asmlinkage long sys_fchmodat(int dfd, const char __user * filename,
			     umode_t mode);
asmlinkage long sys_fchownat(int dfd, const char __user *filename, uid_t user,
			     gid_t group, int flag);
asmlinkage long sys_fchown(unsigned int fd, uid_t user, gid_t group);
asmlinkage long sys_openat(int dfd, const char __user *filename, int flags,
			   umode_t mode);
asmlinkage long sys_openat2(int dfd, const char __user *filename,
			    struct open_how *how, size_t size);
asmlinkage long sys_close(unsigned int fd);
asmlinkage long sys_close_range(unsigned int fd, unsigned int max_fd,
				unsigned int flags);
asmlinkage long sys_vhangup(void);

/* fs/pipe.c */
asmlinkage long sys_pipe2(int __user *fildes, int flags);

/* fs/quota.c */
asmlinkage long sys_quotactl(unsigned int cmd, const char __user *special,
				qid_t id, void __user *addr);

/* fs/readdir.c */
asmlinkage long sys_getdents64(unsigned int fd,
				struct linux_dirent64 __user *dirent,
				unsigned int count);

/* fs/read_write.c */
asmlinkage long sys_llseek(unsigned int fd, unsigned long offset_high,
			unsigned long offset_low, loff_t __user *result,
			unsigned int whence);
asmlinkage long sys_lseek(unsigned int fd, off_t offset,
			  unsigned int whence);
asmlinkage long sys_read(unsigned int fd, char __user *buf, size_t count);
asmlinkage long sys_write(unsigned int fd, const char __user *buf,
			  size_t count);
asmlinkage long sys_readv(unsigned long fd,
			  const struct iovec __user *vec,
			  unsigned long vlen);
asmlinkage long sys_writev(unsigned long fd,
			   const struct iovec __user *vec,
			   unsigned long vlen);
asmlinkage long sys_pread64(unsigned int fd, char __user *buf,
			    size_t count, loff_t pos);
asmlinkage long sys_pwrite64(unsigned int fd, const char __user *buf,
			     size_t count, loff_t pos);
asmlinkage long sys_preadv(unsigned long fd, const struct iovec __user *vec,
			   unsigned long vlen, unsigned long pos_l, unsigned long pos_h);
asmlinkage long sys_pwritev(unsigned long fd, const struct iovec __user *vec,
			    unsigned long vlen, unsigned long pos_l, unsigned long pos_h);

/* fs/sendfile.c */
asmlinkage long sys_sendfile64(int out_fd, int in_fd,
			       loff_t __user *offset, size_t count);

/* fs/select.c */
asmlinkage long sys_pselect6(int, fd_set __user *, fd_set __user *,
			     fd_set __user *, struct __kernel_timespec __user *,
			     void __user *);
asmlinkage long sys_pselect6_time32(int, fd_set __user *, fd_set __user *,
			     fd_set __user *, struct old_timespec32 __user *,
			     void __user *);
asmlinkage long sys_ppoll(struct pollfd __user *, unsigned int,
			  struct __kernel_timespec __user *, const sigset_t __user *,
			  size_t);
asmlinkage long sys_ppoll_time32(struct pollfd __user *, unsigned int,
			  struct old_timespec32 __user *, const sigset_t __user *,
			  size_t);

/* fs/signalfd.c */
asmlinkage long sys_signalfd4(int ufd, sigset_t __user *user_mask, size_t sizemask, int flags);

/* fs/splice.c */
asmlinkage long sys_vmsplice(int fd, const struct iovec __user *iov,
			     unsigned long nr_segs, unsigned int flags);
asmlinkage long sys_splice(int fd_in, loff_t __user *off_in,
			   int fd_out, loff_t __user *off_out,
			   size_t len, unsigned int flags);
asmlinkage long sys_tee(int fdin, int fdout, size_t len, unsigned int flags);

/* fs/stat.c */
asmlinkage long sys_readlinkat(int dfd, const char __user *path, char __user *buf,
			       int bufsiz);
asmlinkage long sys_newfstatat(int dfd, const char __user *filename,
			       struct stat __user *statbuf, int flag);
asmlinkage long sys_newfstat(unsigned int fd, struct stat __user *statbuf);
#if defined(__ARCH_WANT_STAT64) || defined(__ARCH_WANT_COMPAT_STAT64)
asmlinkage long sys_fstat64(unsigned long fd, struct stat64 __user *statbuf);
asmlinkage long sys_fstatat64(int dfd, const char __user *filename,
			       struct stat64 __user *statbuf, int flag);
#endif

/* fs/sync.c */
asmlinkage long sys_sync(void);
asmlinkage long sys_fsync(unsigned int fd);
asmlinkage long sys_fdatasync(unsigned int fd);
asmlinkage long sys_sync_file_range2(int fd, unsigned int flags,
				     loff_t offset, loff_t nbytes);
asmlinkage long sys_sync_file_range(int fd, loff_t offset, loff_t nbytes,
					unsigned int flags);

/* fs/timerfd.c */
asmlinkage long sys_timerfd_create(int clockid, int flags);
asmlinkage long sys_timerfd_settime(int ufd, int flags,
				    const struct __kernel_itimerspec __user *utmr,
				    struct __kernel_itimerspec __user *otmr);
asmlinkage long sys_timerfd_gettime(int ufd, struct __kernel_itimerspec __user *otmr);
asmlinkage long sys_timerfd_gettime32(int ufd,
				   struct old_itimerspec32 __user *otmr);
asmlinkage long sys_timerfd_settime32(int ufd, int flags,
				   const struct old_itimerspec32 __user *utmr,
				   struct old_itimerspec32 __user *otmr);

/* fs/utimes.c */
asmlinkage long sys_utimensat(int dfd, const char __user *filename,
				struct __kernel_timespec __user *utimes,
				int flags);
asmlinkage long sys_utimensat_time32(unsigned int dfd,
				const char __user *filename,
				struct old_timespec32 __user *t, int flags);

/* kernel/acct.c */
asmlinkage long sys_acct(const char __user *name);

/* kernel/capability.c */
asmlinkage long sys_capget(cap_user_header_t header,
				cap_user_data_t dataptr);
asmlinkage long sys_capset(cap_user_header_t header,
				const cap_user_data_t data);

/* kernel/exec_domain.c */
asmlinkage long sys_personality(unsigned int personality);

/* kernel/exit.c */
asmlinkage long sys_exit(int error_code);
asmlinkage long sys_exit_group(int error_code);
asmlinkage long sys_waitid(int which, pid_t pid,
			   struct siginfo __user *infop,
			   int options, struct rusage __user *ru);

/* kernel/fork.c */
asmlinkage long sys_set_tid_address(int __user *tidptr);
asmlinkage long sys_unshare(unsigned long unshare_flags);

/* kernel/futex.c */
asmlinkage long sys_futex(u32 __user *uaddr, int op, u32 val,
			struct __kernel_timespec __user *utime, u32 __user *uaddr2,
			u32 val3);
asmlinkage long sys_futex_time32(u32 __user *uaddr, int op, u32 val,
			struct old_timespec32 __user *utime, u32 __user *uaddr2,
			u32 val3);
asmlinkage long sys_get_robust_list(int pid,
				    struct robust_list_head __user * __user *head_ptr,
				    size_t __user *len_ptr);
asmlinkage long sys_set_robust_list(struct robust_list_head __user *head,
				    size_t len);

/* kernel/hrtimer.c */
asmlinkage long sys_nanosleep(struct __kernel_timespec __user *rqtp,
			      struct __kernel_timespec __user *rmtp);
asmlinkage long sys_nanosleep_time32(struct old_timespec32 __user *rqtp,
				     struct old_timespec32 __user *rmtp);

/* kernel/itimer.c */
asmlinkage long sys_getitimer(int which, struct __kernel_old_itimerval __user *value);
asmlinkage long sys_setitimer(int which,
				struct __kernel_old_itimerval __user *value,
				struct __kernel_old_itimerval __user *ovalue);

/* kernel/kexec.c */
asmlinkage long sys_kexec_load(unsigned long entry, unsigned long nr_segments,
				struct kexec_segment __user *segments,
				unsigned long flags);

/* kernel/module.c */
asmlinkage long sys_init_module(void __user *umod, unsigned long len,
				const char __user *uargs);
asmlinkage long sys_delete_module(const char __user *name_user,
				unsigned int flags);

/* kernel/posix-timers.c */
asmlinkage long sys_timer_create(clockid_t which_clock,
				 struct sigevent __user *timer_event_spec,
				 timer_t __user * created_timer_id);
asmlinkage long sys_timer_gettime(timer_t timer_id,
				struct __kernel_itimerspec __user *setting);
asmlinkage long sys_timer_getoverrun(timer_t timer_id);
asmlinkage long sys_timer_settime(timer_t timer_id, int flags,
				const struct __kernel_itimerspec __user *new_setting,
				struct __kernel_itimerspec __user *old_setting);
asmlinkage long sys_timer_delete(timer_t timer_id);
asmlinkage long sys_clock_settime(clockid_t which_clock,
				const struct __kernel_timespec __user *tp);
asmlinkage long sys_clock_gettime(clockid_t which_clock,
				struct __kernel_timespec __user *tp);
asmlinkage long sys_clock_getres(clockid_t which_clock,
				struct __kernel_timespec __user *tp);
asmlinkage long sys_clock_nanosleep(clockid_t which_clock, int flags,
				const struct __kernel_timespec __user *rqtp,
				struct __kernel_timespec __user *rmtp);
asmlinkage long sys_timer_gettime32(timer_t timer_id,
				 struct old_itimerspec32 __user *setting);
asmlinkage long sys_timer_settime32(timer_t timer_id, int flags,
					 struct old_itimerspec32 __user *new,
					 struct old_itimerspec32 __user *old);
asmlinkage long sys_clock_settime32(clockid_t which_clock,
				struct old_timespec32 __user *tp);
asmlinkage long sys_clock_gettime32(clockid_t which_clock,
				struct old_timespec32 __user *tp);
asmlinkage long sys_clock_getres_time32(clockid_t which_clock,
				struct old_timespec32 __user *tp);
asmlinkage long sys_clock_nanosleep_time32(clockid_t which_clock, int flags,
				struct old_timespec32 __user *rqtp,
				struct old_timespec32 __user *rmtp);

/* kernel/printk.c */
asmlinkage long sys_syslog(int type, char __user *buf, int len);

/* kernel/ptrace.c */
asmlinkage long sys_ptrace(long request, long pid, unsigned long addr,
			   unsigned long data);
/* kernel/sched/core.c */

asmlinkage long sys_sched_setparam(pid_t pid,
					struct sched_param __user *param);
asmlinkage long sys_sched_setscheduler(pid_t pid, int policy,
					struct sched_param __user *param);
asmlinkage long sys_sched_getscheduler(pid_t pid);
asmlinkage long sys_sched_getparam(pid_t pid,
					struct sched_param __user *param);
asmlinkage long sys_sched_setaffinity(pid_t pid, unsigned int len,
					unsigned long __user *user_mask_ptr);
asmlinkage long sys_sched_getaffinity(pid_t pid, unsigned int len,
					unsigned long __user *user_mask_ptr);
asmlinkage long sys_sched_yield(void);
asmlinkage long sys_sched_get_priority_max(int policy);
asmlinkage long sys_sched_get_priority_min(int policy);
asmlinkage long sys_sched_rr_get_interval(pid_t pid,
				struct __kernel_timespec __user *interval);
asmlinkage long sys_sched_rr_get_interval_time32(pid_t pid,
						 struct old_timespec32 __user *interval);

/* kernel/signal.c */
asmlinkage long sys_restart_syscall(void);
asmlinkage long sys_kill(pid_t pid, int sig);
asmlinkage long sys_tkill(pid_t pid, int sig);
asmlinkage long sys_tgkill(pid_t tgid, pid_t pid, int sig);
asmlinkage long sys_sigaltstack(const struct sigaltstack __user *uss,
				struct sigaltstack __user *uoss);
asmlinkage long sys_rt_sigsuspend(sigset_t __user *unewset, size_t sigsetsize);
#ifndef CONFIG_ODD_RT_SIGACTION
asmlinkage long sys_rt_sigaction(int,
				 const struct sigaction __user *,
				 struct sigaction __user *,
				 size_t);
#endif
asmlinkage long sys_rt_sigprocmask(int how, sigset_t __user *set,
				sigset_t __user *oset, size_t sigsetsize);
asmlinkage long sys_rt_sigpending(sigset_t __user *set, size_t sigsetsize);
asmlinkage long sys_rt_sigtimedwait(const sigset_t __user *uthese,
				siginfo_t __user *uinfo,
				const struct __kernel_timespec __user *uts,
				size_t sigsetsize);
asmlinkage long sys_rt_sigtimedwait_time32(const sigset_t __user *uthese,
				siginfo_t __user *uinfo,
				const struct old_timespec32 __user *uts,
				size_t sigsetsize);
asmlinkage long sys_rt_sigqueueinfo(pid_t pid, int sig, siginfo_t __user *uinfo);

/* kernel/sys.c */
asmlinkage long sys_setpriority(int which, int who, int niceval);
asmlinkage long sys_getpriority(int which, int who);
asmlinkage long sys_reboot(int magic1, int magic2, unsigned int cmd,
				void __user *arg);
asmlinkage long sys_setregid(gid_t rgid, gid_t egid);
asmlinkage long sys_setgid(gid_t gid);
asmlinkage long sys_setreuid(uid_t ruid, uid_t euid);
asmlinkage long sys_setuid(uid_t uid);
asmlinkage long sys_setresuid(uid_t ruid, uid_t euid, uid_t suid);
asmlinkage long sys_getresuid(uid_t __user *ruid, uid_t __user *euid, uid_t __user *suid);
asmlinkage long sys_setresgid(gid_t rgid, gid_t egid, gid_t sgid);
asmlinkage long sys_getresgid(gid_t __user *rgid, gid_t __user *egid, gid_t __user *sgid);
asmlinkage long sys_setfsuid(uid_t uid);
asmlinkage long sys_setfsgid(gid_t gid);
asmlinkage long sys_times(struct tms __user *tbuf);
asmlinkage long sys_setpgid(pid_t pid, pid_t pgid);
asmlinkage long sys_getpgid(pid_t pid);
asmlinkage long sys_getsid(pid_t pid);
asmlinkage long sys_setsid(void);
asmlinkage long sys_getgroups(int gidsetsize, gid_t __user *grouplist);
asmlinkage long sys_setgroups(int gidsetsize, gid_t __user *grouplist);
asmlinkage long sys_newuname(struct new_utsname __user *name);
asmlinkage long sys_sethostname(char __user *name, int len);
asmlinkage long sys_setdomainname(char __user *name, int len);
asmlinkage long sys_getrlimit(unsigned int resource,
				struct rlimit __user *rlim);
asmlinkage long sys_setrlimit(unsigned int resource,
				struct rlimit __user *rlim);
asmlinkage long sys_getrusage(int who, struct rusage __user *ru);
asmlinkage long sys_umask(int mask);
asmlinkage long sys_prctl(int option, unsigned long arg2, unsigned long arg3,
			unsigned long arg4, unsigned long arg5);
asmlinkage long sys_getcpu(unsigned __user *cpu, unsigned __user *node, struct getcpu_cache __user *cache);

/* kernel/time.c */
asmlinkage long sys_gettimeofday(struct __kernel_old_timeval __user *tv,
				struct timezone __user *tz);
asmlinkage long sys_settimeofday(struct __kernel_old_timeval __user *tv,
				struct timezone __user *tz);
asmlinkage long sys_adjtimex(struct __kernel_timex __user *txc_p);
asmlinkage long sys_adjtimex_time32(struct old_timex32 __user *txc_p);

/* kernel/timer.c */
asmlinkage long sys_getpid(void);
asmlinkage long sys_getppid(void);
asmlinkage long sys_getuid(void);
asmlinkage long sys_geteuid(void);
asmlinkage long sys_getgid(void);
asmlinkage long sys_getegid(void);
asmlinkage long sys_gettid(void);
asmlinkage long sys_sysinfo(struct sysinfo __user *info);

/* ipc/mqueue.c */
asmlinkage long sys_mq_open(const char __user *name, int oflag, umode_t mode, struct mq_attr __user *attr);
asmlinkage long sys_mq_unlink(const char __user *name);
asmlinkage long sys_mq_timedsend(mqd_t mqdes, const char __user *msg_ptr, size_t msg_len, unsigned int msg_prio, const struct __kernel_timespec __user *abs_timeout);
asmlinkage long sys_mq_timedreceive(mqd_t mqdes, char __user *msg_ptr, size_t msg_len, unsigned int __user *msg_prio, const struct __kernel_timespec __user *abs_timeout);
asmlinkage long sys_mq_notify(mqd_t mqdes, const struct sigevent __user *notification);
asmlinkage long sys_mq_getsetattr(mqd_t mqdes, const struct mq_attr __user *mqstat, struct mq_attr __user *omqstat);
asmlinkage long sys_mq_timedreceive_time32(mqd_t mqdes,
			char __user *u_msg_ptr,
			unsigned int msg_len, unsigned int __user *u_msg_prio,
			const struct old_timespec32 __user *u_abs_timeout);
asmlinkage long sys_mq_timedsend_time32(mqd_t mqdes,
			const char __user *u_msg_ptr,
			unsigned int msg_len, unsigned int msg_prio,
			const struct old_timespec32 __user *u_abs_timeout);

/* ipc/msg.c */
asmlinkage long sys_msgget(key_t key, int msgflg);
asmlinkage long sys_old_msgctl(int msqid, int cmd, struct msqid_ds __user *buf);
asmlinkage long sys_msgctl(int msqid, int cmd, struct msqid_ds __user *buf);
asmlinkage long sys_msgrcv(int msqid, struct msgbuf __user *msgp,
				size_t msgsz, long msgtyp, int msgflg);
asmlinkage long sys_msgsnd(int msqid, struct msgbuf __user *msgp,
				size_t msgsz, int msgflg);

/* ipc/sem.c */
asmlinkage long sys_semget(key_t key, int nsems, int semflg);
asmlinkage long sys_semctl(int semid, int semnum, int cmd, unsigned long arg);
asmlinkage long sys_old_semctl(int semid, int semnum, int cmd, unsigned long arg);
asmlinkage long sys_semtimedop(int semid, struct sembuf __user *sops,
				unsigned nsops,
				const struct __kernel_timespec __user *timeout);
asmlinkage long sys_semtimedop_time32(int semid, struct sembuf __user *sops,
				unsigned nsops,
				const struct old_timespec32 __user *timeout);
asmlinkage long sys_semop(int semid, struct sembuf __user *sops,
				unsigned nsops);

/* ipc/shm.c */
asmlinkage long sys_shmget(key_t key, size_t size, int flag);
asmlinkage long sys_old_shmctl(int shmid, int cmd, struct shmid_ds __user *buf);
asmlinkage long sys_shmctl(int shmid, int cmd, struct shmid_ds __user *buf);
asmlinkage long sys_shmat(int shmid, char __user *shmaddr, int shmflg);
asmlinkage long sys_shmdt(char __user *shmaddr);

/* net/socket.c */
asmlinkage long sys_socket(int, int, int);
asmlinkage long sys_socketpair(int, int, int, int __user *);
asmlinkage long sys_bind(int, struct sockaddr __user *, int);
asmlinkage long sys_listen(int, int);
asmlinkage long sys_accept(int, struct sockaddr __user *, int __user *);
asmlinkage long sys_connect(int, struct sockaddr __user *, int);
asmlinkage long sys_getsockname(int, struct sockaddr __user *, int __user *);
asmlinkage long sys_getpeername(int, struct sockaddr __user *, int __user *);
asmlinkage long sys_sendto(int, void __user *, size_t, unsigned,
				struct sockaddr __user *, int);
asmlinkage long sys_recvfrom(int, void __user *, size_t, unsigned,
				struct sockaddr __user *, int __user *);
asmlinkage long sys_setsockopt(int fd, int level, int optname,
				char __user *optval, int optlen);
asmlinkage long sys_getsockopt(int fd, int level, int optname,
				char __user *optval, int __user *optlen);
asmlinkage long sys_shutdown(int, int);
asmlinkage long sys_sendmsg(int fd, struct user_msghdr __user *msg, unsigned flags);
asmlinkage long sys_recvmsg(int fd, struct user_msghdr __user *msg, unsigned flags);

/* mm/filemap.c */
asmlinkage long sys_readahead(int fd, loff_t offset, size_t count);

/* mm/nommu.c, also with MMU */
asmlinkage long sys_brk(unsigned long brk);
asmlinkage long sys_munmap(unsigned long addr, size_t len);
asmlinkage long sys_mremap(unsigned long addr,
			   unsigned long old_len, unsigned long new_len,
			   unsigned long flags, unsigned long new_addr);

/* security/keys/keyctl.c */
asmlinkage long sys_add_key(const char __user *_type,
			    const char __user *_description,
			    const void __user *_payload,
			    size_t plen,
			    key_serial_t destringid);
asmlinkage long sys_request_key(const char __user *_type,
				const char __user *_description,
				const char __user *_callout_info,
				key_serial_t destringid);
asmlinkage long sys_keyctl(int cmd, unsigned long arg2, unsigned long arg3,
			   unsigned long arg4, unsigned long arg5);

/* arch/example/kernel/sys_example.c */
#ifdef CONFIG_CLONE_BACKWARDS
asmlinkage long sys_clone(unsigned long, unsigned long, int __user *, unsigned long,
	       int __user *);
#else
#ifdef CONFIG_CLONE_BACKWARDS3
asmlinkage long sys_clone(unsigned long, unsigned long, int, int __user *,
			  int __user *, unsigned long);
#else
asmlinkage long sys_clone(unsigned long, unsigned long, int __user *,
	       int __user *, unsigned long);
#endif
#endif

asmlinkage long sys_clone3(struct clone_args __user *uargs, size_t size);

asmlinkage long sys_execve(const char __user *filename,
		const char __user *const __user *argv,
		const char __user *const __user *envp);

/* mm/fadvise.c */
asmlinkage long sys_fadvise64_64(int fd, loff_t offset, loff_t len, int advice);

/* mm/, CONFIG_MMU only */
asmlinkage long sys_swapon(const char __user *specialfile, int swap_flags);
asmlinkage long sys_swapoff(const char __user *specialfile);
asmlinkage long sys_mprotect(unsigned long start, size_t len,
				unsigned long prot);
asmlinkage long sys_msync(unsigned long start, size_t len, int flags);
asmlinkage long sys_mlock(unsigned long start, size_t len);
asmlinkage long sys_munlock(unsigned long start, size_t len);
asmlinkage long sys_mlockall(int flags);
asmlinkage long sys_munlockall(void);
asmlinkage long sys_mincore(unsigned long start, size_t len,
				unsigned char __user * vec);
asmlinkage long sys_madvise(unsigned long start, size_t len, int behavior);
asmlinkage long sys_remap_file_pages(unsigned long start, unsigned long size,
			unsigned long prot, unsigned long pgoff,
			unsigned long flags);
asmlinkage long sys_mbind(unsigned long start, unsigned long len,
				unsigned long mode,
				const unsigned long __user *nmask,
				unsigned long maxnode,
				unsigned flags);
asmlinkage long sys_get_mempolicy(int __user *policy,
				unsigned long __user *nmask,
				unsigned long maxnode,
				unsigned long addr, unsigned long flags);
asmlinkage long sys_set_mempolicy(int mode, const unsigned long __user *nmask,
				unsigned long maxnode);
asmlinkage long sys_migrate_pages(pid_t pid, unsigned long maxnode,
				const unsigned long __user *from,
				const unsigned long __user *to);
asmlinkage long sys_move_pages(pid_t pid, unsigned long nr_pages,
				const void __user * __user *pages,
				const int __user *nodes,
				int __user *status,
				int flags);

asmlinkage long sys_rt_tgsigqueueinfo(pid_t tgid, pid_t  pid, int sig,
		siginfo_t __user *uinfo);
asmlinkage long sys_perf_event_open(
		struct perf_event_attr __user *attr_uptr,
		pid_t pid, int cpu, int group_fd, unsigned long flags);
asmlinkage long sys_accept4(int, struct sockaddr __user *, int __user *, int);
asmlinkage long sys_recvmmsg(int fd, struct mmsghdr __user *msg,
			     unsigned int vlen, unsigned flags,
			     struct __kernel_timespec __user *timeout);
asmlinkage long sys_recvmmsg_time32(int fd, struct mmsghdr __user *msg,
			     unsigned int vlen, unsigned flags,
			     struct old_timespec32 __user *timeout);

asmlinkage long sys_wait4(pid_t pid, int __user *stat_addr,
				int options, struct rusage __user *ru);
asmlinkage long sys_prlimit64(pid_t pid, unsigned int resource,
				const struct rlimit64 __user *new_rlim,
				struct rlimit64 __user *old_rlim);
asmlinkage long sys_fanotify_init(unsigned int flags, unsigned int event_f_flags);
asmlinkage long sys_fanotify_mark(int fanotify_fd, unsigned int flags,
				  u64 mask, int fd,
				  const char  __user *pathname);
asmlinkage long sys_name_to_handle_at(int dfd, const char __user *name,
				      struct file_handle __user *handle,
				      int __user *mnt_id, int flag);
asmlinkage long sys_open_by_handle_at(int mountdirfd,
				      struct file_handle __user *handle,
				      int flags);
asmlinkage long sys_clock_adjtime(clockid_t which_clock,
				struct __kernel_timex __user *tx);
asmlinkage long sys_clock_adjtime32(clockid_t which_clock,
				struct old_timex32 __user *tx);
asmlinkage long sys_syncfs(int fd);
asmlinkage long sys_setns(int fd, int nstype);
asmlinkage long sys_pidfd_open(pid_t pid, unsigned int flags);
asmlinkage long sys_sendmmsg(int fd, struct mmsghdr __user *msg,
			     unsigned int vlen, unsigned flags);
asmlinkage long sys_process_vm_readv(pid_t pid,
				     const struct iovec __user *lvec,
				     unsigned long liovcnt,
				     const struct iovec __user *rvec,
				     unsigned long riovcnt,
				     unsigned long flags);
asmlinkage long sys_process_vm_writev(pid_t pid,
				      const struct iovec __user *lvec,
				      unsigned long liovcnt,
				      const struct iovec __user *rvec,
				      unsigned long riovcnt,
				      unsigned long flags);
asmlinkage long sys_kcmp(pid_t pid1, pid_t pid2, int type,
			 unsigned long idx1, unsigned long idx2);
asmlinkage long sys_finit_module(int fd, const char __user *uargs, int flags);
asmlinkage long sys_sched_setattr(pid_t pid,
					struct sched_attr __user *attr,
					unsigned int flags);
asmlinkage long sys_sched_getattr(pid_t pid,
					struct sched_attr __user *attr,
					unsigned int size,
					unsigned int flags);
asmlinkage long sys_renameat2(int olddfd, const char __user *oldname,
			      int newdfd, const char __user *newname,
			      unsigned int flags);
asmlinkage long sys_seccomp(unsigned int op, unsigned int flags,
			    void __user *uargs);
asmlinkage long sys_getrandom(char __user *buf, size_t count,
			      unsigned int flags);
asmlinkage long sys_memfd_create(const char __user *uname_ptr, unsigned int flags);
asmlinkage long sys_bpf(int cmd, union bpf_attr *attr, unsigned int size);
asmlinkage long sys_execveat(int dfd, const char __user *filename,
			const char __user *const __user *argv,
			const char __user *const __user *envp, int flags);
asmlinkage long sys_userfaultfd(int flags);
asmlinkage long sys_membarrier(int cmd, int flags);
asmlinkage long sys_mlock2(unsigned long start, size_t len, int flags);
asmlinkage long sys_copy_file_range(int fd_in, loff_t __user *off_in,
				    int fd_out, loff_t __user *off_out,
				    size_t len, unsigned int flags);
asmlinkage long sys_preadv2(unsigned long fd, const struct iovec __user *vec,
			    unsigned long vlen, unsigned long pos_l, unsigned long pos_h,
			    rwf_t flags);
asmlinkage long sys_pwritev2(unsigned long fd, const struct iovec __user *vec,
			    unsigned long vlen, unsigned long pos_l, unsigned long pos_h,
			    rwf_t flags);
asmlinkage long sys_pkey_mprotect(unsigned long start, size_t len,
				  unsigned long prot, int pkey);
asmlinkage long sys_pkey_alloc(unsigned long flags, unsigned long init_val);
asmlinkage long sys_pkey_free(int pkey);
asmlinkage long sys_statx(int dfd, const char __user *path, unsigned flags,
			  unsigned mask, struct statx __user *buffer);
asmlinkage long sys_rseq(struct rseq __user *rseq, uint32_t rseq_len,
			 int flags, uint32_t sig);
asmlinkage long sys_open_tree(int dfd, const char __user *path, unsigned flags);
asmlinkage long sys_move_mount(int from_dfd, const char __user *from_path,
			       int to_dfd, const char __user *to_path,
			       unsigned int ms_flags);
asmlinkage long sys_fsopen(const char __user *fs_name, unsigned int flags);
asmlinkage long sys_fsconfig(int fs_fd, unsigned int cmd, const char __user *key,
			     const void __user *value, int aux);
asmlinkage long sys_fsmount(int fs_fd, unsigned int flags, unsigned int ms_flags);
asmlinkage long sys_fspick(int dfd, const char __user *path, unsigned int flags);
asmlinkage long sys_pidfd_send_signal(int pidfd, int sig,
				       siginfo_t __user *info,
				       unsigned int flags);
asmlinkage long sys_pidfd_getfd(int pidfd, int fd, unsigned int flags);

/*
 * Architecture-specific system calls
 */

/* arch/x86/kernel/ioport.c */
asmlinkage long sys_ioperm(unsigned long from, unsigned long num, int on);

/* pciconfig: alpha, arm, arm64, ia64, sparc */
asmlinkage long sys_pciconfig_read(unsigned long bus, unsigned long dfn,
				unsigned long off, unsigned long len,
				void __user *buf);
asmlinkage long sys_pciconfig_write(unsigned long bus, unsigned long dfn,
				unsigned long off, unsigned long len,
				void __user *buf);
asmlinkage long sys_pciconfig_iobase(long which, unsigned long bus, unsigned long devfn);

/* powerpc */
asmlinkage long sys_spu_run(int fd, __u32 __user *unpc,
				 __u32 __user *ustatus);
asmlinkage long sys_spu_create(const char __user *name,
		unsigned int flags, umode_t mode, int fd);


/*
 * Deprecated system calls which are still defined in
 * include/uapi/asm-generic/unistd.h and wanted by >= 1 arch
 */

/* __ARCH_WANT_SYSCALL_NO_AT */
asmlinkage long sys_open(const char __user *filename,
				int flags, umode_t mode);
asmlinkage long sys_link(const char __user *oldname,
				const char __user *newname);
asmlinkage long sys_unlink(const char __user *pathname);
asmlinkage long sys_mknod(const char __user *filename, umode_t mode,
				unsigned dev);
asmlinkage long sys_chmod(const char __user *filename, umode_t mode);
asmlinkage long sys_chown(const char __user *filename,
				uid_t user, gid_t group);
asmlinkage long sys_mkdir(const char __user *pathname, umode_t mode);
asmlinkage long sys_rmdir(const char __user *pathname);
asmlinkage long sys_lchown(const char __user *filename,
				uid_t user, gid_t group);
asmlinkage long sys_access(const char __user *filename, int mode);
asmlinkage long sys_rename(const char __user *oldname,
				const char __user *newname);
asmlinkage long sys_symlink(const char __user *old, const char __user *new);
#if defined(__ARCH_WANT_STAT64) || defined(__ARCH_WANT_COMPAT_STAT64)
asmlinkage long sys_stat64(const char __user *filename,
				struct stat64 __user *statbuf);
asmlinkage long sys_lstat64(const char __user *filename,
				struct stat64 __user *statbuf);
#endif

/* __ARCH_WANT_SYSCALL_NO_FLAGS */
asmlinkage long sys_pipe(int __user *fildes);
asmlinkage long sys_dup2(unsigned int oldfd, unsigned int newfd);
asmlinkage long sys_epoll_create(int size);
asmlinkage long sys_inotify_init(void);
asmlinkage long sys_eventfd(unsigned int count);
asmlinkage long sys_signalfd(int ufd, sigset_t __user *user_mask, size_t sizemask);

/* __ARCH_WANT_SYSCALL_OFF_T */
asmlinkage long sys_sendfile(int out_fd, int in_fd,
			     off_t __user *offset, size_t count);
asmlinkage long sys_newstat(const char __user *filename,
				struct stat __user *statbuf);
asmlinkage long sys_newlstat(const char __user *filename,
				struct stat __user *statbuf);
asmlinkage long sys_fadvise64(int fd, loff_t offset, size_t len, int advice);

/* __ARCH_WANT_SYSCALL_DEPRECATED */
asmlinkage long sys_alarm(unsigned int seconds);
asmlinkage long sys_getpgrp(void);
asmlinkage long sys_pause(void);
asmlinkage long sys_time(__kernel_old_time_t __user *tloc);
asmlinkage long sys_time32(old_time32_t __user *tloc);
#ifdef __ARCH_WANT_SYS_UTIME
asmlinkage long sys_utime(char __user *filename,
				struct utimbuf __user *times);
asmlinkage long sys_utimes(char __user *filename,
				struct __kernel_old_timeval __user *utimes);
asmlinkage long sys_futimesat(int dfd, const char __user *filename,
			      struct __kernel_old_timeval __user *utimes);
#endif
asmlinkage long sys_futimesat_time32(unsigned int dfd,
				     const char __user *filename,
				     struct old_timeval32 __user *t);
asmlinkage long sys_utime32(const char __user *filename,
				 struct old_utimbuf32 __user *t);
asmlinkage long sys_utimes_time32(const char __user *filename,
				  struct old_timeval32 __user *t);
asmlinkage long sys_creat(const char __user *pathname, umode_t mode);
asmlinkage long sys_getdents(unsigned int fd,
				struct linux_dirent __user *dirent,
				unsigned int count);
asmlinkage long sys_select(int n, fd_set __user *inp, fd_set __user *outp,
			fd_set __user *exp, struct __kernel_old_timeval __user *tvp);
asmlinkage long sys_poll(struct pollfd __user *ufds, unsigned int nfds,
				int timeout);
asmlinkage long sys_epoll_wait(int epfd, struct epoll_event __user *events,
				int maxevents, int timeout);
asmlinkage long sys_ustat(unsigned dev, struct ustat __user *ubuf);
asmlinkage long sys_vfork(void);
asmlinkage long sys_recv(int, void __user *, size_t, unsigned);
asmlinkage long sys_send(int, void __user *, size_t, unsigned);
asmlinkage long sys_bdflush(int func, long data);
asmlinkage long sys_oldumount(char __user *name);
asmlinkage long sys_uselib(const char __user *library);
asmlinkage long sys_sysctl(struct __sysctl_args __user *args);
asmlinkage long sys_sysfs(int option,
				unsigned long arg1, unsigned long arg2);
asmlinkage long sys_fork(void);

/* obsolete: kernel/time/time.c */
asmlinkage long sys_stime(__kernel_old_time_t __user *tptr);
asmlinkage long sys_stime32(old_time32_t __user *tptr);

/* obsolete: kernel/signal.c */
asmlinkage long sys_sigpending(old_sigset_t __user *uset);
asmlinkage long sys_sigprocmask(int how, old_sigset_t __user *set,
				old_sigset_t __user *oset);
#ifdef CONFIG_OLD_SIGSUSPEND
asmlinkage long sys_sigsuspend(old_sigset_t mask);
#endif

#ifdef CONFIG_OLD_SIGSUSPEND3
asmlinkage long sys_sigsuspend(int unused1, int unused2, old_sigset_t mask);
#endif

#ifdef CONFIG_OLD_SIGACTION
asmlinkage long sys_sigaction(int, const struct old_sigaction __user *,
				struct old_sigaction __user *);
#endif
asmlinkage long sys_sgetmask(void);
asmlinkage long sys_ssetmask(int newmask);
asmlinkage long sys_signal(int sig, __sighandler_t handler);

/* obsolete: kernel/sched/core.c */
asmlinkage long sys_nice(int increment);

/* obsolete: kernel/kexec_file.c */
asmlinkage long sys_kexec_file_load(int kernel_fd, int initrd_fd,
				    unsigned long cmdline_len,
				    const char __user *cmdline_ptr,
				    unsigned long flags);

/* obsolete: kernel/exit.c */
asmlinkage long sys_waitpid(pid_t pid, int __user *stat_addr, int options);

/* obsolete: kernel/uid16.c */
#ifdef CONFIG_HAVE_UID16
asmlinkage long sys_chown16(const char __user *filename,
				old_uid_t user, old_gid_t group);
asmlinkage long sys_lchown16(const char __user *filename,
				old_uid_t user, old_gid_t group);
asmlinkage long sys_fchown16(unsigned int fd, old_uid_t user, old_gid_t group);
asmlinkage long sys_setregid16(old_gid_t rgid, old_gid_t egid);
asmlinkage long sys_setgid16(old_gid_t gid);
asmlinkage long sys_setreuid16(old_uid_t ruid, old_uid_t euid);
asmlinkage long sys_setuid16(old_uid_t uid);
asmlinkage long sys_setresuid16(old_uid_t ruid, old_uid_t euid, old_uid_t suid);
asmlinkage long sys_getresuid16(old_uid_t __user *ruid,
				old_uid_t __user *euid, old_uid_t __user *suid);
asmlinkage long sys_setresgid16(old_gid_t rgid, old_gid_t egid, old_gid_t sgid);
asmlinkage long sys_getresgid16(old_gid_t __user *rgid,
				old_gid_t __user *egid, old_gid_t __user *sgid);
asmlinkage long sys_setfsuid16(old_uid_t uid);
asmlinkage long sys_setfsgid16(old_gid_t gid);
asmlinkage long sys_getgroups16(int gidsetsize, old_gid_t __user *grouplist);
asmlinkage long sys_setgroups16(int gidsetsize, old_gid_t __user *grouplist);
asmlinkage long sys_getuid16(void);
asmlinkage long sys_geteuid16(void);
asmlinkage long sys_getgid16(void);
asmlinkage long sys_getegid16(void);
#endif

/* obsolete: net/socket.c */
asmlinkage long sys_socketcall(int call, unsigned long __user *args);

/* obsolete: fs/stat.c */
asmlinkage long sys_stat(const char __user *filename,
			struct __old_kernel_stat __user *statbuf);
asmlinkage long sys_lstat(const char __user *filename,
			struct __old_kernel_stat __user *statbuf);
asmlinkage long sys_fstat(unsigned int fd,
			struct __old_kernel_stat __user *statbuf);
asmlinkage long sys_readlink(const char __user *path,
				char __user *buf, int bufsiz);

/* obsolete: fs/select.c */
asmlinkage long sys_old_select(struct sel_arg_struct __user *arg);

/* obsolete: fs/readdir.c */
asmlinkage long sys_old_readdir(unsigned int, struct old_linux_dirent __user *, unsigned int);

/* obsolete: kernel/sys.c */
asmlinkage long sys_gethostname(char __user *name, int len);
asmlinkage long sys_uname(struct old_utsname __user *);
asmlinkage long sys_olduname(struct oldold_utsname __user *);
#ifdef __ARCH_WANT_SYS_OLD_GETRLIMIT
asmlinkage long sys_old_getrlimit(unsigned int resource, struct rlimit __user *rlim);
#endif

/* obsolete: ipc */
asmlinkage long sys_ipc(unsigned int call, int first, unsigned long second,
		unsigned long third, void __user *ptr, long fifth);

/* obsolete: mm/ */
asmlinkage long sys_mmap_pgoff(unsigned long addr, unsigned long len,
			unsigned long prot, unsigned long flags,
			unsigned long fd, unsigned long pgoff);
asmlinkage long sys_old_mmap(struct mmap_arg_struct __user *arg);


/*
 * Not a real system call, but a placeholder for syscalls which are
 * not implemented -- see kernel/sys_ni.c
 */
asmlinkage long sys_ni_syscall(void);

#endif /* CONFIG_ARCH_HAS_SYSCALL_WRAPPER */


/*
 * Kernel code should not call syscalls (i.e., sys_xyzyyz()) directly.
 * Instead, use one of the functions which work equivalently, such as
 * the ksys_xyzyyz() functions prototyped below.
 */

int ksys_umount(char __user *name, int flags);
int ksys_dup(unsigned int fildes);
int ksys_chroot(const char __user *filename);
ssize_t ksys_write(unsigned int fd, const char __user *buf, size_t count);
int ksys_chdir(const char __user *filename);
int ksys_fchmod(unsigned int fd, umode_t mode);
int ksys_fchown(unsigned int fd, uid_t user, gid_t group);
int ksys_getdents64(unsigned int fd, struct linux_dirent64 __user *dirent,
		    unsigned int count);
int ksys_ioctl(unsigned int fd, unsigned int cmd, unsigned long arg);
off_t ksys_lseek(unsigned int fd, off_t offset, unsigned int whence);
ssize_t ksys_read(unsigned int fd, char __user *buf, size_t count);
void ksys_sync(void);
int ksys_unshare(unsigned long unshare_flags);
int ksys_setsid(void);
int ksys_sync_file_range(int fd, loff_t offset, loff_t nbytes,
			 unsigned int flags);
ssize_t ksys_pread64(unsigned int fd, char __user *buf, size_t count,
		     loff_t pos);
ssize_t ksys_pwrite64(unsigned int fd, const char __user *buf,
		      size_t count, loff_t pos);
int ksys_fallocate(int fd, int mode, loff_t offset, loff_t len);
#ifdef CONFIG_ADVISE_SYSCALLS
int ksys_fadvise64_64(int fd, loff_t offset, loff_t len, int advice);
#else
static inline int ksys_fadvise64_64(int fd, loff_t offset, loff_t len,
				    int advice)
{
	return -EINVAL;
}
#endif
unsigned long ksys_mmap_pgoff(unsigned long addr, unsigned long len,
			      unsigned long prot, unsigned long flags,
			      unsigned long fd, unsigned long pgoff);
ssize_t ksys_readahead(int fd, loff_t offset, size_t count);
int ksys_ipc(unsigned int call, int first, unsigned long second,
	unsigned long third, void __user * ptr, long fifth);
int compat_ksys_ipc(u32 call, int first, int second,
	u32 third, u32 ptr, u32 fifth);

/*
 * The following kernel syscall equivalents are just wrappers to fs-internal
 * functions. Therefore, provide stubs to be inlined at the callsites.
 */
extern long do_unlinkat(int dfd, struct filename *name);

static inline long ksys_unlink(const char __user *pathname)
{
	return do_unlinkat(AT_FDCWD, getname(pathname));
}

extern long do_rmdir(int dfd, const char __user *pathname);

static inline long ksys_rmdir(const char __user *pathname)
{
	return do_rmdir(AT_FDCWD, pathname);
}

extern long do_mkdirat(int dfd, const char __user *pathname, umode_t mode);

static inline long ksys_mkdir(const char __user *pathname, umode_t mode)
{
	return do_mkdirat(AT_FDCWD, pathname, mode);
}

extern long do_symlinkat(const char __user *oldname, int newdfd,
			 const char __user *newname);

static inline long ksys_symlink(const char __user *oldname,
				const char __user *newname)
{
	return do_symlinkat(oldname, AT_FDCWD, newname);
}

extern long do_mknodat(int dfd, const char __user *filename, umode_t mode,
		       unsigned int dev);

static inline long ksys_mknod(const char __user *filename, umode_t mode,
			      unsigned int dev)
{
	return do_mknodat(AT_FDCWD, filename, mode, dev);
}

extern int do_linkat(int olddfd, const char __user *oldname, int newdfd,
		     const char __user *newname, int flags);

static inline long ksys_link(const char __user *oldname,
			     const char __user *newname)
{
	return do_linkat(AT_FDCWD, oldname, AT_FDCWD, newname, 0);
}

extern int do_fchmodat(int dfd, const char __user *filename, umode_t mode);

static inline int ksys_chmod(const char __user *filename, umode_t mode)
{
	return do_fchmodat(AT_FDCWD, filename, mode);
}

long do_faccessat(int dfd, const char __user *filename, int mode, int flags);

static inline long ksys_access(const char __user *filename, int mode)
{
	return do_faccessat(AT_FDCWD, filename, mode, 0);
}

extern int do_fchownat(int dfd, const char __user *filename, uid_t user,
		       gid_t group, int flag);

static inline long ksys_chown(const char __user *filename, uid_t user,
			      gid_t group)
{
	return do_fchownat(AT_FDCWD, filename, user, group, 0);
}

static inline long ksys_lchown(const char __user *filename, uid_t user,
			       gid_t group)
{
	return do_fchownat(AT_FDCWD, filename, user, group,
			     AT_SYMLINK_NOFOLLOW);
}

extern long do_sys_ftruncate(unsigned int fd, loff_t length, int small);

static inline long ksys_ftruncate(unsigned int fd, loff_t length)
{
	return do_sys_ftruncate(fd, length, 1);
}

extern int __close_fd(struct files_struct *files, unsigned int fd);

/*
 * In contrast to sys_close(), this stub does not check whether the syscall
 * should or should not be restarted, but returns the raw error codes from
 * __close_fd().
 */
static inline int ksys_close(unsigned int fd)
{
	return __close_fd(current->files, fd);
}

extern long do_sys_open(int dfd, const char __user *filename, int flags,
			umode_t mode);

static inline long ksys_open(const char __user *filename, int flags,
			     umode_t mode)
{
	if (force_o_largefile())
		flags |= O_LARGEFILE;
	return do_sys_open(AT_FDCWD, filename, flags, mode);
}

extern long do_sys_truncate(const char __user *pathname, loff_t length);

static inline long ksys_truncate(const char __user *pathname, loff_t length)
{
	return do_sys_truncate(pathname, length);
}

static inline unsigned int ksys_personality(unsigned int personality)
{
	unsigned int old = current->personality;

	if (personality != 0xffffffff)
		set_personality(personality);

	return old;
}

/* for __ARCH_WANT_SYS_IPC */
long ksys_semtimedop(int semid, struct sembuf __user *tsops,
		     unsigned int nsops,
		     const struct __kernel_timespec __user *timeout);
long ksys_semget(key_t key, int nsems, int semflg);
long ksys_old_semctl(int semid, int semnum, int cmd, unsigned long arg);
long ksys_msgget(key_t key, int msgflg);
long ksys_old_msgctl(int msqid, int cmd, struct msqid_ds __user *buf);
long ksys_msgrcv(int msqid, struct msgbuf __user *msgp, size_t msgsz,
		 long msgtyp, int msgflg);
long ksys_msgsnd(int msqid, struct msgbuf __user *msgp, size_t msgsz,
		 int msgflg);
long ksys_shmget(key_t key, size_t size, int shmflg);
long ksys_shmdt(char __user *shmaddr);
long ksys_old_shmctl(int shmid, int cmd, struct shmid_ds __user *buf);
long compat_ksys_semtimedop(int semid, struct sembuf __user *tsems,
			    unsigned int nsops,
			    const struct old_timespec32 __user *timeout);

int __sys_getsockopt(int fd, int level, int optname, char __user *optval,
		int __user *optlen);
int __sys_setsockopt(int fd, int level, int optname, char __user *optval,
		int optlen);
#endif