aboutsummaryrefslogtreecommitdiffstats
path: root/arch/alpha/kernel/osf_sys.c
blob: ce3a675c0c4bd76b3a4447daa9da32c18ee1459a (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
1434
1435
1436
1437
1438
1439
1440
// SPDX-License-Identifier: GPL-2.0
/*
 *  linux/arch/alpha/kernel/osf_sys.c
 *
 *  Copyright (C) 1995  Linus Torvalds
 */

/*
 * This file handles some of the stranger OSF/1 system call interfaces.
 * Some of the system calls expect a non-C calling standard, others have
 * special parameter blocks..
 */

#include <linux/errno.h>
#include <linux/sched/signal.h>
#include <linux/sched/mm.h>
#include <linux/sched/task_stack.h>
#include <linux/sched/cputime.h>
#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/smp.h>
#include <linux/stddef.h>
#include <linux/syscalls.h>
#include <linux/unistd.h>
#include <linux/ptrace.h>
#include <linux/user.h>
#include <linux/utsname.h>
#include <linux/time.h>
#include <linux/timex.h>
#include <linux/major.h>
#include <linux/stat.h>
#include <linux/mman.h>
#include <linux/shm.h>
#include <linux/poll.h>
#include <linux/file.h>
#include <linux/types.h>
#include <linux/ipc.h>
#include <linux/namei.h>
#include <linux/uio.h>
#include <linux/vfs.h>
#include <linux/rcupdate.h>
#include <linux/slab.h>

#include <asm/fpu.h>
#include <asm/io.h>
#include <linux/uaccess.h>
#include <asm/sysinfo.h>
#include <asm/thread_info.h>
#include <asm/hwrpb.h>
#include <asm/processor.h>

/*
 * Brk needs to return an error.  Still support Linux's brk(0) query idiom,
 * which OSF programs just shouldn't be doing.  We're still not quite
 * identical to OSF as we don't return 0 on success, but doing otherwise
 * would require changes to libc.  Hopefully this is good enough.
 */
SYSCALL_DEFINE1(osf_brk, unsigned long, brk)
{
	unsigned long retval = sys_brk(brk);
	if (brk && brk != retval)
		retval = -ENOMEM;
	return retval;
}
 
/*
 * This is pure guess-work..
 */
SYSCALL_DEFINE4(osf_set_program_attributes, unsigned long, text_start,
		unsigned long, text_len, unsigned long, bss_start,
		unsigned long, bss_len)
{
	struct mm_struct *mm;

	mm = current->mm;
	mm->end_code = bss_start + bss_len;
	mm->start_brk = bss_start + bss_len;
	mm->brk = bss_start + bss_len;
#if 0
	printk("set_program_attributes(%lx %lx %lx %lx)\n",
		text_start, text_len, bss_start, bss_len);
#endif
	return 0;
}

/*
 * OSF/1 directory handling functions...
 *
 * The "getdents()" interface is much more sane: the "basep" stuff is
 * braindamage (it can't really handle filesystems where the directory
 * offset differences aren't the same as "d_reclen").
 */
#define NAME_OFFSET	offsetof (struct osf_dirent, d_name)

struct osf_dirent {
	unsigned int d_ino;
	unsigned short d_reclen;
	unsigned short d_namlen;
	char d_name[1];
};

struct osf_dirent_callback {
	struct dir_context ctx;
	struct osf_dirent __user *dirent;
	long __user *basep;
	unsigned int count;
	int error;
};

static int
osf_filldir(struct dir_context *ctx, const char *name, int namlen,
	    loff_t offset, u64 ino, unsigned int d_type)
{
	struct osf_dirent __user *dirent;
	struct osf_dirent_callback *buf =
		container_of(ctx, struct osf_dirent_callback, ctx);
	unsigned int reclen = ALIGN(NAME_OFFSET + namlen + 1, sizeof(u32));
	unsigned int d_ino;

	buf->error = -EINVAL;	/* only used if we fail */
	if (reclen > buf->count)
		return -EINVAL;
	d_ino = ino;
	if (sizeof(d_ino) < sizeof(ino) && d_ino != ino) {
		buf->error = -EOVERFLOW;
		return -EOVERFLOW;
	}
	if (buf->basep) {
		if (put_user(offset, buf->basep))
			goto Efault;
		buf->basep = NULL;
	}
	dirent = buf->dirent;
	if (put_user(d_ino, &dirent->d_ino) ||
	    put_user(namlen, &dirent->d_namlen) ||
	    put_user(reclen, &dirent->d_reclen) ||
	    copy_to_user(dirent->d_name, name, namlen) ||
	    put_user(0, dirent->d_name + namlen))
		goto Efault;
	dirent = (void __user *)dirent + reclen;
	buf->dirent = dirent;
	buf->count -= reclen;
	return 0;
Efault:
	buf->error = -EFAULT;
	return -EFAULT;
}

SYSCALL_DEFINE4(osf_getdirentries, unsigned int, fd,
		struct osf_dirent __user *, dirent, unsigned int, count,
		long __user *, basep)
{
	int error;
	struct fd arg = fdget_pos(fd);
	struct osf_dirent_callback buf = {
		.ctx.actor = osf_filldir,
		.dirent = dirent,
		.basep = basep,
		.count = count
	};

	if (!arg.file)
		return -EBADF;

	error = iterate_dir(arg.file, &buf.ctx);
	if (error >= 0)
		error = buf.error;
	if (count != buf.count)
		error = count - buf.count;

	fdput_pos(arg);
	return error;
}

#undef NAME_OFFSET

SYSCALL_DEFINE6(osf_mmap, unsigned long, addr, unsigned long, len,
		unsigned long, prot, unsigned long, flags, unsigned long, fd,
		unsigned long, off)
{
	unsigned long ret = -EINVAL;

#if 0
	if (flags & (_MAP_HASSEMAPHORE | _MAP_INHERIT | _MAP_UNALIGNED))
		printk("%s: unimplemented OSF mmap flags %04lx\n", 
			current->comm, flags);
#endif
	if ((off + PAGE_ALIGN(len)) < off)
		goto out;
	if (off & ~PAGE_MASK)
		goto out;
	ret = sys_mmap_pgoff(addr, len, prot, flags, fd, off >> PAGE_SHIFT);
 out:
	return ret;
}

struct osf_stat {
	int		st_dev;
	int		st_pad1;
	unsigned	st_mode;
	unsigned short	st_nlink;
	short		st_nlink_reserved;
	unsigned	st_uid;
	unsigned	st_gid;
	int		st_rdev;
	int		st_ldev;
	long		st_size;
	int		st_pad2;
	int		st_uatime;
	int		st_pad3;
	int		st_umtime;
	int		st_pad4;
	int		st_uctime;
	int		st_pad5;
	int		st_pad6;
	unsigned	st_flags;
	unsigned	st_gen;
	long		st_spare[4];
	unsigned	st_ino;
	int		st_ino_reserved;
	int		st_atime;
	int		st_atime_reserved;
	int		st_mtime;
	int		st_mtime_reserved;
	int		st_ctime;
	int		st_ctime_reserved;
	long		st_blksize;
	long		st_blocks;
};

/*
 * The OSF/1 statfs structure is much larger, but this should
 * match the beginning, at least.
 */
struct osf_statfs {
	short f_type;
	short f_flags;
	int f_fsize;
	int f_bsize;
	int f_blocks;
	int f_bfree;
	int f_bavail;
	int f_files;
	int f_ffree;
	__kernel_fsid_t f_fsid;
};

struct osf_statfs64 {
	short f_type;
	short f_flags;
	int f_pad1;
	int f_pad2;
	int f_pad3;
	int f_pad4;
	int f_pad5;
	int f_pad6;
	int f_pad7;
	__kernel_fsid_t f_fsid;
	u_short f_namemax;
	short f_reserved1;
	int f_spare[8];
	char f_pad8[90];
	char f_pad9[90];
	long mount_info[10];
	u_long f_flags2;
	long f_spare2[14];
	long f_fsize;
	long f_bsize;
	long f_blocks;
	long f_bfree;
	long f_bavail;
	long f_files;
	long f_ffree;
};

static int
linux_to_osf_stat(struct kstat *lstat, struct osf_stat __user *osf_stat)
{
	struct osf_stat tmp = { 0 };

	tmp.st_dev	= lstat->dev;
	tmp.st_mode	= lstat->mode;
	tmp.st_nlink	= lstat->nlink;
	tmp.st_uid	= from_kuid_munged(current_user_ns(), lstat->uid);
	tmp.st_gid	= from_kgid_munged(current_user_ns(), lstat->gid);
	tmp.st_rdev	= lstat->rdev;
	tmp.st_ldev	= lstat->rdev;
	tmp.st_size	= lstat->size;
	tmp.st_uatime	= lstat->atime.tv_nsec / 1000;
	tmp.st_umtime	= lstat->mtime.tv_nsec / 1000;
	tmp.st_uctime	= lstat->ctime.tv_nsec / 1000;
	tmp.st_ino	= lstat->ino;
	tmp.st_atime	= lstat->atime.tv_sec;
	tmp.st_mtime	= lstat->mtime.tv_sec;
	tmp.st_ctime	= lstat->ctime.tv_sec;
	tmp.st_blksize	= lstat->blksize;
	tmp.st_blocks	= lstat->blocks;

	return copy_to_user(osf_stat, &tmp, sizeof(tmp)) ? -EFAULT : 0;
}

static int
linux_to_osf_statfs(struct kstatfs *linux_stat, struct osf_statfs __user *osf_stat,
		    unsigned long bufsiz)
{
	struct osf_statfs tmp_stat;

	tmp_stat.f_type = linux_stat->f_type;
	tmp_stat.f_flags = 0;	/* mount flags */
	tmp_stat.f_fsize = linux_stat->f_frsize;
	tmp_stat.f_bsize = linux_stat->f_bsize;
	tmp_stat.f_blocks = linux_stat->f_blocks;
	tmp_stat.f_bfree = linux_stat->f_bfree;
	tmp_stat.f_bavail = linux_stat->f_bavail;
	tmp_stat.f_files = linux_stat->f_files;
	tmp_stat.f_ffree = linux_stat->f_ffree;
	tmp_stat.f_fsid = linux_stat->f_fsid;
	if (bufsiz > sizeof(tmp_stat))
		bufsiz = sizeof(tmp_stat);
	return copy_to_user(osf_stat, &tmp_stat, bufsiz) ? -EFAULT : 0;
}

static int
linux_to_osf_statfs64(struct kstatfs *linux_stat, struct osf_statfs64 __user *osf_stat,
		      unsigned long bufsiz)
{
	struct osf_statfs64 tmp_stat = { 0 };

	tmp_stat.f_type = linux_stat->f_type;
	tmp_stat.f_fsize = linux_stat->f_frsize;
	tmp_stat.f_bsize = linux_stat->f_bsize;
	tmp_stat.f_blocks = linux_stat->f_blocks;
	tmp_stat.f_bfree = linux_stat->f_bfree;
	tmp_stat.f_bavail = linux_stat->f_bavail;
	tmp_stat.f_files = linux_stat->f_files;
	tmp_stat.f_ffree = linux_stat->f_ffree;
	tmp_stat.f_fsid = linux_stat->f_fsid;
	if (bufsiz > sizeof(tmp_stat))
		bufsiz = sizeof(tmp_stat);
	return copy_to_user(osf_stat, &tmp_stat, bufsiz) ? -EFAULT : 0;
}

SYSCALL_DEFINE3(osf_statfs, const char __user *, pathname,
		struct osf_statfs __user *, buffer, unsigned long, bufsiz)
{
	struct kstatfs linux_stat;
	int error = user_statfs(pathname, &linux_stat);
	if (!error)
		error = linux_to_osf_statfs(&linux_stat, buffer, bufsiz);
	return error;	
}

SYSCALL_DEFINE2(osf_stat, char __user *, name, struct osf_stat __user *, buf)
{
	struct kstat stat;
	int error;

	error = vfs_stat(name, &stat);
	if (error)
		return error;

	return linux_to_osf_stat(&stat, buf);
}

SYSCALL_DEFINE2(osf_lstat, char __user *, name, struct osf_stat __user *, buf)
{
	struct kstat stat;
	int error;

	error = vfs_lstat(name, &stat);
	if (error)
		return error;

	return linux_to_osf_stat(&stat, buf);
}

SYSCALL_DEFINE2(osf_fstat, int, fd, struct osf_stat __user *, buf)
{
	struct kstat stat;
	int error;

	error = vfs_fstat(fd, &stat);
	if (error)
		return error;

	return linux_to_osf_stat(&stat, buf);
}

SYSCALL_DEFINE3(osf_fstatfs, unsigned long, fd,
		struct osf_statfs __user *, buffer, unsigned long, bufsiz)
{
	struct kstatfs linux_stat;
	int error = fd_statfs(fd, &linux_stat);
	if (!error)
		error = linux_to_osf_statfs(&linux_stat, buffer, bufsiz);
	return error;
}

SYSCALL_DEFINE3(osf_statfs64, char __user *, pathname,
		struct osf_statfs64 __user *, buffer, unsigned long, bufsiz)
{
	struct kstatfs linux_stat;
	int error = user_statfs(pathname, &linux_stat);
	if (!error)
		error = linux_to_osf_statfs64(&linux_stat, buffer, bufsiz);
	return error;
}

SYSCALL_DEFINE3(osf_fstatfs64, unsigned long, fd,
		struct osf_statfs64 __user *, buffer, unsigned long, bufsiz)
{
	struct kstatfs linux_stat;
	int error = fd_statfs(fd, &linux_stat);
	if (!error)
		error = linux_to_osf_statfs64(&linux_stat, buffer, bufsiz);
	return error;
}

/*
 * Uhh.. OSF/1 mount parameters aren't exactly obvious..
 *
 * Although to be frank, neither are the native Linux/i386 ones..
 */
struct ufs_args {
	char __user *devname;
	int flags;
	uid_t exroot;
};

struct cdfs_args {
	char __user *devname;
	int flags;
	uid_t exroot;

	/* This has lots more here, which Linux handles with the option block
	   but I'm too lazy to do the translation into ASCII.  */
};

struct procfs_args {
	char __user *devname;
	int flags;
	uid_t exroot;
};

/*
 * We can't actually handle ufs yet, so we translate UFS mounts to
 * ext2fs mounts. I wouldn't mind a UFS filesystem, but the UFS
 * layout is so braindead it's a major headache doing it.
 *
 * Just how long ago was it written? OTOH our UFS driver may be still
 * unhappy with OSF UFS. [CHECKME]
 */
static int
osf_ufs_mount(const char __user *dirname,
	      struct ufs_args __user *args, int flags)
{
	int retval;
	struct cdfs_args tmp;
	struct filename *devname;

	retval = -EFAULT;
	if (copy_from_user(&tmp, args, sizeof(tmp)))
		goto out;
	devname = getname(tmp.devname);
	retval = PTR_ERR(devname);
	if (IS_ERR(devname))
		goto out;
	retval = do_mount(devname->name, dirname, "ext2", flags, NULL);
	putname(devname);
 out:
	return retval;
}

static int
osf_cdfs_mount(const char __user *dirname,
	       struct cdfs_args __user *args, int flags)
{
	int retval;
	struct cdfs_args tmp;
	struct filename *devname;

	retval = -EFAULT;
	if (copy_from_user(&tmp, args, sizeof(tmp)))
		goto out;
	devname = getname(tmp.devname);
	retval = PTR_ERR(devname);
	if (IS_ERR(devname))
		goto out;
	retval = do_mount(devname->name, dirname, "iso9660", flags, NULL);
	putname(devname);
 out:
	return retval;
}

static int
osf_procfs_mount(const char __user *dirname,
		 struct procfs_args __user *args, int flags)
{
	struct procfs_args tmp;

	if (copy_from_user(&tmp, args, sizeof(tmp)))
		return -EFAULT;

	return do_mount("", dirname, "proc", flags, NULL);
}

SYSCALL_DEFINE4(osf_mount, unsigned long, typenr, const char __user *, path,
		int, flag, void __user *, data)
{
	int retval;

	switch (typenr) {
	case 1:
		retval = osf_ufs_mount(path, data, flag);
		break;
	case 6:
		retval = osf_cdfs_mount(path, data, flag);
		break;
	case 9:
		retval = osf_procfs_mount(path, data, flag);
		break;
	default:
		retval = -EINVAL;
		printk("osf_mount(%ld, %x)\n", typenr, flag);
	}

	return retval;
}

SYSCALL_DEFINE1(osf_utsname, char __user *, name)
{
	int error;

	down_read(&uts_sem);
	error = -EFAULT;
	if (copy_to_user(name + 0, utsname()->sysname, 32))
		goto out;
	if (copy_to_user(name + 32, utsname()->nodename, 32))
		goto out;
	if (copy_to_user(name + 64, utsname()->release, 32))
		goto out;
	if (copy_to_user(name + 96, utsname()->version, 32))
		goto out;
	if (copy_to_user(name + 128, utsname()->machine, 32))
		goto out;

	error = 0;
 out:
	up_read(&uts_sem);	
	return error;
}

SYSCALL_DEFINE0(getpagesize)
{
	return PAGE_SIZE;
}

SYSCALL_DEFINE0(getdtablesize)
{
	return sysctl_nr_open;
}

/*
 * For compatibility with OSF/1 only.  Use utsname(2) instead.
 */
SYSCALL_DEFINE2(osf_getdomainname, char __user *, name, int, namelen)
{
	int len, err = 0;
	char *kname;

	if (namelen > 32)
		namelen = 32;

	down_read(&uts_sem);
	kname = utsname()->domainname;
	len = strnlen(kname, namelen);
	if (copy_to_user(name, kname, min(len + 1, namelen)))
		err = -EFAULT;
	up_read(&uts_sem);

	return err;
}

/*
 * The following stuff should move into a header file should it ever
 * be labeled "officially supported."  Right now, there is just enough
 * support to avoid applications (such as tar) printing error
 * messages.  The attributes are not really implemented.
 */

/*
 * Values for Property list entry flag
 */
#define PLE_PROPAGATE_ON_COPY		0x1	/* cp(1) will copy entry
						   by default */
#define PLE_FLAG_MASK			0x1	/* Valid flag values */
#define PLE_FLAG_ALL			-1	/* All flag value */

struct proplistname_args {
	unsigned int pl_mask;
	unsigned int pl_numnames;
	char **pl_names;
};

union pl_args {
	struct setargs {
		char __user *path;
		long follow;
		long nbytes;
		char __user *buf;
	} set;
	struct fsetargs {
		long fd;
		long nbytes;
		char __user *buf;
	} fset;
	struct getargs {
		char __user *path;
		long follow;
		struct proplistname_args __user *name_args;
		long nbytes;
		char __user *buf;
		int __user *min_buf_size;
	} get;
	struct fgetargs {
		long fd;
		struct proplistname_args __user *name_args;
		long nbytes;
		char __user *buf;
		int __user *min_buf_size;
	} fget;
	struct delargs {
		char __user *path;
		long follow;
		struct proplistname_args __user *name_args;
	} del;
	struct fdelargs {
		long fd;
		struct proplistname_args __user *name_args;
	} fdel;
};

enum pl_code {
	PL_SET = 1, PL_FSET = 2,
	PL_GET = 3, PL_FGET = 4,
	PL_DEL = 5, PL_FDEL = 6
};

SYSCALL_DEFINE2(osf_proplist_syscall, enum pl_code, code,
		union pl_args __user *, args)
{
	long error;
	int __user *min_buf_size_ptr;

	switch (code) {
	case PL_SET:
		if (get_user(error, &args->set.nbytes))
			error = -EFAULT;
		break;
	case PL_FSET:
		if (get_user(error, &args->fset.nbytes))
			error = -EFAULT;
		break;
	case PL_GET:
		error = get_user(min_buf_size_ptr, &args->get.min_buf_size);
		if (error)
			break;
		error = put_user(0, min_buf_size_ptr);
		break;
	case PL_FGET:
		error = get_user(min_buf_size_ptr, &args->fget.min_buf_size);
		if (error)
			break;
		error = put_user(0, min_buf_size_ptr);
		break;
	case PL_DEL:
	case PL_FDEL:
		error = 0;
		break;
	default:
		error = -EOPNOTSUPP;
		break;
	};
	return error;
}

SYSCALL_DEFINE2(osf_sigstack, struct sigstack __user *, uss,
		struct sigstack __user *, uoss)
{
	unsigned long usp = rdusp();
	unsigned long oss_sp = current->sas_ss_sp + current->sas_ss_size;
	unsigned long oss_os = on_sig_stack(usp);
	int error;

	if (uss) {
		void __user *ss_sp;

		error = -EFAULT;
		if (get_user(ss_sp, &uss->ss_sp))
			goto out;

		/* If the current stack was set with sigaltstack, don't
		   swap stacks while we are on it.  */
		error = -EPERM;
		if (current->sas_ss_sp && on_sig_stack(usp))
			goto out;

		/* Since we don't know the extent of the stack, and we don't
		   track onstack-ness, but rather calculate it, we must 
		   presume a size.  Ho hum this interface is lossy.  */
		current->sas_ss_sp = (unsigned long)ss_sp - SIGSTKSZ;
		current->sas_ss_size = SIGSTKSZ;
	}

	if (uoss) {
		error = -EFAULT;
		if (put_user(oss_sp, &uoss->ss_sp) ||
		    put_user(oss_os, &uoss->ss_onstack))
			goto out;
	}

	error = 0;
 out:
	return error;
}

SYSCALL_DEFINE3(osf_sysinfo, int, command, char __user *, buf, long, count)
{
	const char *sysinfo_table[] = {
		utsname()->sysname,
		utsname()->nodename,
		utsname()->release,
		utsname()->version,
		utsname()->machine,
		"alpha",	/* instruction set architecture */
		"dummy",	/* hardware serial number */
		"dummy",	/* hardware manufacturer */
		"dummy",	/* secure RPC domain */
	};
	unsigned long offset;
	const char *res;
	long len, err = -EINVAL;

	offset = command-1;
	if (offset >= ARRAY_SIZE(sysinfo_table)) {
		/* Digital UNIX has a few unpublished interfaces here */
		printk("sysinfo(%d)", command);
		goto out;
	}

	down_read(&uts_sem);
	res = sysinfo_table[offset];
	len = strlen(res)+1;
	if ((unsigned long)len > (unsigned long)count)
		len = count;
	if (copy_to_user(buf, res, len))
		err = -EFAULT;
	else
		err = 0;
	up_read(&uts_sem);
 out:
	return err;
}

SYSCALL_DEFINE5(osf_getsysinfo, unsigned long, op, void __user *, buffer,
		unsigned long, nbytes, int __user *, start, void __user *, arg)
{
	unsigned long w;
	struct percpu_struct *cpu;

	switch (op) {
	case GSI_IEEE_FP_CONTROL:
		/* Return current software fp control & status bits.  */
		/* Note that DU doesn't verify available space here.  */

 		w = current_thread_info()->ieee_state & IEEE_SW_MASK;
 		w = swcr_update_status(w, rdfpcr());
		if (put_user(w, (unsigned long __user *) buffer))
			return -EFAULT;
		return 0;

	case GSI_IEEE_STATE_AT_SIGNAL:
		/*
		 * Not sure anybody will ever use this weird stuff.  These
		 * ops can be used (under OSF/1) to set the fpcr that should
		 * be used when a signal handler starts executing.
		 */
		break;

 	case GSI_UACPROC:
		if (nbytes < sizeof(unsigned int))
			return -EINVAL;
		w = current_thread_info()->status & UAC_BITMASK;
		if (put_user(w, (unsigned int __user *)buffer))
			return -EFAULT;
 		return 1;

	case GSI_PROC_TYPE:
		if (nbytes < sizeof(unsigned long))
			return -EINVAL;
		cpu = (struct percpu_struct*)
		  ((char*)hwrpb + hwrpb->processor_offset);
		w = cpu->type;
		if (put_user(w, (unsigned long  __user*)buffer))
			return -EFAULT;
		return 1;

	case GSI_GET_HWRPB:
		if (nbytes > sizeof(*hwrpb))
			return -EINVAL;
		if (copy_to_user(buffer, hwrpb, nbytes) != 0)
			return -EFAULT;
		return 1;

	default:
		break;
	}

	return -EOPNOTSUPP;
}

SYSCALL_DEFINE5(osf_setsysinfo, unsigned long, op, void __user *, buffer,
		unsigned long, nbytes, int __user *, start, void __user *, arg)
{
	switch (op) {
	case SSI_IEEE_FP_CONTROL: {
		unsigned long swcr, fpcr;
		unsigned int *state;

		/* 
		 * Alpha Architecture Handbook 4.7.7.3:
		 * To be fully IEEE compiant, we must track the current IEEE
		 * exception state in software, because spurious bits can be
		 * set in the trap shadow of a software-complete insn.
		 */

		if (get_user(swcr, (unsigned long __user *)buffer))
			return -EFAULT;
		state = &current_thread_info()->ieee_state;

		/* Update softare trap enable bits.  */
		*state = (*state & ~IEEE_SW_MASK) | (swcr & IEEE_SW_MASK);

		/* Update the real fpcr.  */
		fpcr = rdfpcr() & FPCR_DYN_MASK;
		fpcr |= ieee_swcr_to_fpcr(swcr);
		wrfpcr(fpcr);

		return 0;
	}

	case SSI_IEEE_RAISE_EXCEPTION: {
		unsigned long exc, swcr, fpcr, fex;
		unsigned int *state;

		if (get_user(exc, (unsigned long __user *)buffer))
			return -EFAULT;
		state = &current_thread_info()->ieee_state;
		exc &= IEEE_STATUS_MASK;

		/* Update softare trap enable bits.  */
 		swcr = (*state & IEEE_SW_MASK) | exc;
		*state |= exc;

		/* Update the real fpcr.  */
		fpcr = rdfpcr();
		fpcr |= ieee_swcr_to_fpcr(swcr);
		wrfpcr(fpcr);

 		/* If any exceptions set by this call, and are unmasked,
		   send a signal.  Old exceptions are not signaled.  */
		fex = (exc >> IEEE_STATUS_TO_EXCSUM_SHIFT) & swcr;
 		if (fex) {
			siginfo_t info;
			int si_code = 0;

			if (fex & IEEE_TRAP_ENABLE_DNO) si_code = FPE_FLTUND;
			if (fex & IEEE_TRAP_ENABLE_INE) si_code = FPE_FLTRES;
			if (fex & IEEE_TRAP_ENABLE_UNF) si_code = FPE_FLTUND;
			if (fex & IEEE_TRAP_ENABLE_OVF) si_code = FPE_FLTOVF;
			if (fex & IEEE_TRAP_ENABLE_DZE) si_code = FPE_FLTDIV;
			if (fex & IEEE_TRAP_ENABLE_INV) si_code = FPE_FLTINV;

			info.si_signo = SIGFPE;
			info.si_errno = 0;
			info.si_code = si_code;
			info.si_addr = NULL;  /* FIXME */
 			send_sig_info(SIGFPE, &info, current);
 		}
		return 0;
	}

	case SSI_IEEE_STATE_AT_SIGNAL:
	case SSI_IEEE_IGNORE_STATE_AT_SIGNAL:
		/*
		 * Not sure anybody will ever use this weird stuff.  These
		 * ops can be used (under OSF/1) to set the fpcr that should
		 * be used when a signal handler starts executing.
		 */
		break;

 	case SSI_NVPAIRS: {
		unsigned __user *p = buffer;
		unsigned i;
		
		for (i = 0, p = buffer; i < nbytes; ++i, p += 2) {
			unsigned v, w, status;

			if (get_user(v, p) || get_user(w, p + 1))
 				return -EFAULT;
 			switch (v) {
 			case SSIN_UACPROC:
				w &= UAC_BITMASK;
				status = current_thread_info()->status;
				status = (status & ~UAC_BITMASK) | w;
				current_thread_info()->status = status;
 				break;
 
 			default:
 				return -EOPNOTSUPP;
 			}
 		}
 		return 0;
	}
 
	case SSI_LMF:
		return 0;

	default:
		break;
	}

	return -EOPNOTSUPP;
}

/* Translations due to the fact that OSF's time_t is an int.  Which
   affects all sorts of things, like timeval and itimerval.  */

extern struct timezone sys_tz;

struct timeval32
{
    int tv_sec, tv_usec;
};

struct itimerval32
{
    struct timeval32 it_interval;
    struct timeval32 it_value;
};

static inline long
get_tv32(struct timeval *o, struct timeval32 __user *i)
{
	struct timeval32 tv;
	if (copy_from_user(&tv, i, sizeof(struct timeval32)))
		return -EFAULT;
	o->tv_sec = tv.tv_sec;
	o->tv_usec = tv.tv_usec;
	return 0;
}

static inline long
put_tv32(struct timeval32 __user *o, struct timeval *i)
{
	return copy_to_user(o, &(struct timeval32){
				.tv_sec = o->tv_sec,
				.tv_usec = o->tv_usec},
			    sizeof(struct timeval32));
}

static inline long
get_it32(struct itimerval *o, struct itimerval32 __user *i)
{
	struct itimerval32 itv;
	if (copy_from_user(&itv, i, sizeof(struct itimerval32)))
		return -EFAULT;
	o->it_interval.tv_sec = itv.it_interval.tv_sec;
	o->it_interval.tv_usec = itv.it_interval.tv_usec;
	o->it_value.tv_sec = itv.it_value.tv_sec;
	o->it_value.tv_usec = itv.it_value.tv_usec;
	return 0;
}

static inline long
put_it32(struct itimerval32 __user *o, struct itimerval *i)
{
	return copy_to_user(o, &(struct itimerval32){
				.it_interval.tv_sec = o->it_interval.tv_sec,
				.it_interval.tv_usec = o->it_interval.tv_usec,
				.it_value.tv_sec = o->it_value.tv_sec,
				.it_value.tv_usec = o->it_value.tv_usec},
			    sizeof(struct itimerval32));
}

static inline void
jiffies_to_timeval32(unsigned long jiffies, struct timeval32 *value)
{
	value->tv_usec = (jiffies % HZ) * (1000000L / HZ);
	value->tv_sec = jiffies / HZ;
}

SYSCALL_DEFINE2(osf_gettimeofday, struct timeval32 __user *, tv,
		struct timezone __user *, tz)
{
	if (tv) {
		struct timeval ktv;
		do_gettimeofday(&ktv);
		if (put_tv32(tv, &ktv))
			return -EFAULT;
	}
	if (tz) {
		if (copy_to_user(tz, &sys_tz, sizeof(sys_tz)))
			return -EFAULT;
	}
	return 0;
}

SYSCALL_DEFINE2(osf_settimeofday, struct timeval32 __user *, tv,
		struct timezone __user *, tz)
{
	struct timespec64 kts64;
	struct timespec kts;
	struct timezone ktz;

 	if (tv) {
		if (get_tv32((struct timeval *)&kts, tv))
			return -EFAULT;
		kts.tv_nsec *= 1000;
		kts64 = timespec_to_timespec64(kts);
	}
	if (tz) {
		if (copy_from_user(&ktz, tz, sizeof(*tz)))
			return -EFAULT;
	}

	return do_sys_settimeofday64(tv ? &kts64 : NULL, tz ? &ktz : NULL);
}

asmlinkage long sys_ni_posix_timers(void);

SYSCALL_DEFINE2(osf_getitimer, int, which, struct itimerval32 __user *, it)
{
	struct itimerval kit;
	int error;

	if (!IS_ENABLED(CONFIG_POSIX_TIMERS))
		return sys_ni_posix_timers();

	error = do_getitimer(which, &kit);
	if (!error && put_it32(it, &kit))
		error = -EFAULT;

	return error;
}

SYSCALL_DEFINE3(osf_setitimer, int, which, struct itimerval32 __user *, in,
		struct itimerval32 __user *, out)
{
	struct itimerval kin, kout;
	int error;

	if (!IS_ENABLED(CONFIG_POSIX_TIMERS))
		return sys_ni_posix_timers();

	if (in) {
		if (get_it32(&kin, in))
			return -EFAULT;
	} else
		memset(&kin, 0, sizeof(kin));

	error = do_setitimer(which, &kin, out ? &kout : NULL);
	if (error || !out)
		return error;

	if (put_it32(out, &kout))
		return -EFAULT;

	return 0;

}

SYSCALL_DEFINE2(osf_utimes, const char __user *, filename,
		struct timeval32 __user *, tvs)
{
	struct timespec tv[2];

	if (tvs) {
		struct timeval ktvs[2];
		if (get_tv32(&ktvs[0], &tvs[0]) ||
		    get_tv32(&ktvs[1], &tvs[1]))
			return -EFAULT;

		if (ktvs[0].tv_usec < 0 || ktvs[0].tv_usec >= 1000000 ||
		    ktvs[1].tv_usec < 0 || ktvs[1].tv_usec >= 1000000)
			return -EINVAL;

		tv[0].tv_sec = ktvs[0].tv_sec;
		tv[0].tv_nsec = 1000 * ktvs[0].tv_usec;
		tv[1].tv_sec = ktvs[1].tv_sec;
		tv[1].tv_nsec = 1000 * ktvs[1].tv_usec;
	}

	return do_utimes(AT_FDCWD, filename, tvs ? tv : NULL, 0);
}

SYSCALL_DEFINE5(osf_select, int, n, fd_set __user *, inp, fd_set __user *, outp,
		fd_set __user *, exp, struct timeval32 __user *, tvp)
{
	struct timespec end_time, *to = NULL;
	if (tvp) {
		struct timeval tv;
		to = &end_time;

		if (get_tv32(&tv, tvp))
		    	return -EFAULT;

		if (tv.tv_sec < 0 || tv.tv_usec < 0)
			return -EINVAL;

		if (poll_select_set_timeout(to, tv.tv_sec,
					    tv.tv_usec * NSEC_PER_USEC))
			return -EINVAL;		

	}

	/* OSF does not copy back the remaining time.  */
	return core_sys_select(n, inp, outp, exp, to);
}

struct rusage32 {
	struct timeval32 ru_utime;	/* user time used */
	struct timeval32 ru_stime;	/* system time used */
	long	ru_maxrss;		/* maximum resident set size */
	long	ru_ixrss;		/* integral shared memory size */
	long	ru_idrss;		/* integral unshared data size */
	long	ru_isrss;		/* integral unshared stack size */
	long	ru_minflt;		/* page reclaims */
	long	ru_majflt;		/* page faults */
	long	ru_nswap;		/* swaps */
	long	ru_inblock;		/* block input operations */
	long	ru_oublock;		/* block output operations */
	long	ru_msgsnd;		/* messages sent */
	long	ru_msgrcv;		/* messages received */
	long	ru_nsignals;		/* signals received */
	long	ru_nvcsw;		/* voluntary context switches */
	long	ru_nivcsw;		/* involuntary " */
};

SYSCALL_DEFINE2(osf_getrusage, int, who, struct rusage32 __user *, ru)
{
	struct rusage32 r;
	u64 utime, stime;
	unsigned long utime_jiffies, stime_jiffies;

	if (who != RUSAGE_SELF && who != RUSAGE_CHILDREN)
		return -EINVAL;

	memset(&r, 0, sizeof(r));
	switch (who) {
	case RUSAGE_SELF:
		task_cputime(current, &utime, &stime);
		utime_jiffies = nsecs_to_jiffies(utime);
		stime_jiffies = nsecs_to_jiffies(stime);
		jiffies_to_timeval32(utime_jiffies, &r.ru_utime);
		jiffies_to_timeval32(stime_jiffies, &r.ru_stime);
		r.ru_minflt = current->min_flt;
		r.ru_majflt = current->maj_flt;
		break;
	case RUSAGE_CHILDREN:
		utime_jiffies = nsecs_to_jiffies(current->signal->cutime);
		stime_jiffies = nsecs_to_jiffies(current->signal->cstime);
		jiffies_to_timeval32(utime_jiffies, &r.ru_utime);
		jiffies_to_timeval32(stime_jiffies, &r.ru_stime);
		r.ru_minflt = current->signal->cmin_flt;
		r.ru_majflt = current->signal->cmaj_flt;
		break;
	}

	return copy_to_user(ru, &r, sizeof(r)) ? -EFAULT : 0;
}

SYSCALL_DEFINE4(osf_wait4, pid_t, pid, int __user *, ustatus, int, options,
		struct rusage32 __user *, ur)
{
	unsigned int status = 0;
	struct rusage r;
	long err = kernel_wait4(pid, &status, options, &r);
	if (err <= 0)
		return err;
	if (put_user(status, ustatus))
		return -EFAULT;
	if (!ur)
		return err;
	if (put_tv32(&ur->ru_utime, &r.ru_utime))
		return -EFAULT;
	if (put_tv32(&ur->ru_stime, &r.ru_stime))
		return -EFAULT;
	if (copy_to_user(&ur->ru_maxrss, &r.ru_maxrss,
	      sizeof(struct rusage32) - offsetof(struct rusage32, ru_maxrss)))
		return -EFAULT;
	return err;
}

/*
 * I don't know what the parameters are: the first one
 * seems to be a timeval pointer, and I suspect the second
 * one is the time remaining.. Ho humm.. No documentation.
 */
SYSCALL_DEFINE2(osf_usleep_thread, struct timeval32 __user *, sleep,
		struct timeval32 __user *, remain)
{
	struct timeval tmp;
	unsigned long ticks;

	if (get_tv32(&tmp, sleep))
		goto fault;

	ticks = timeval_to_jiffies(&tmp);

	ticks = schedule_timeout_interruptible(ticks);

	if (remain) {
		jiffies_to_timeval(ticks, &tmp);
		if (put_tv32(remain, &tmp))
			goto fault;
	}
	
	return 0;
 fault:
	return -EFAULT;
}


struct timex32 {
	unsigned int modes;	/* mode selector */
	long offset;		/* time offset (usec) */
	long freq;		/* frequency offset (scaled ppm) */
	long maxerror;		/* maximum error (usec) */
	long esterror;		/* estimated error (usec) */
	int status;		/* clock command/status */
	long constant;		/* pll time constant */
	long precision;		/* clock precision (usec) (read only) */
	long tolerance;		/* clock frequency tolerance (ppm)
				 * (read only)
				 */
	struct timeval32 time;	/* (read only) */
	long tick;		/* (modified) usecs between clock ticks */

	long ppsfreq;           /* pps frequency (scaled ppm) (ro) */
	long jitter;            /* pps jitter (us) (ro) */
	int shift;              /* interval duration (s) (shift) (ro) */
	long stabil;            /* pps stability (scaled ppm) (ro) */
	long jitcnt;            /* jitter limit exceeded (ro) */
	long calcnt;            /* calibration intervals (ro) */
	long errcnt;            /* calibration errors (ro) */
	long stbcnt;            /* stability limit exceeded (ro) */

	int  :32; int  :32; int  :32; int  :32;
	int  :32; int  :32; int  :32; int  :32;
	int  :32; int  :32; int  :32; int  :32;
};

SYSCALL_DEFINE1(old_adjtimex, struct timex32 __user *, txc_p)
{
        struct timex txc;
	int ret;

	/* copy relevant bits of struct timex. */
	if (copy_from_user(&txc, txc_p, offsetof(struct timex32, time)) ||
	    copy_from_user(&txc.tick, &txc_p->tick, sizeof(struct timex32) - 
			   offsetof(struct timex32, tick)))
	  return -EFAULT;

	ret = do_adjtimex(&txc);	
	if (ret < 0)
	  return ret;
	
	/* copy back to timex32 */
	if (copy_to_user(txc_p, &txc, offsetof(struct timex32, time)) ||
	    (copy_to_user(&txc_p->tick, &txc.tick, sizeof(struct timex32) - 
			  offsetof(struct timex32, tick))) ||
	    (put_tv32(&txc_p->time, &txc.time)))
	  return -EFAULT;

	return ret;
}

/* Get an address range which is currently unmapped.  Similar to the
   generic version except that we know how to honor ADDR_LIMIT_32BIT.  */

static unsigned long
arch_get_unmapped_area_1(unsigned long addr, unsigned long len,
		         unsigned long limit)
{
	struct vm_unmapped_area_info info;

	info.flags = 0;
	info.length = len;
	info.low_limit = addr;
	info.high_limit = limit;
	info.align_mask = 0;
	info.align_offset = 0;
	return vm_unmapped_area(&info);
}

unsigned long
arch_get_unmapped_area(struct file *filp, unsigned long addr,
		       unsigned long len, unsigned long pgoff,
		       unsigned long flags)
{
	unsigned long limit;

	/* "32 bit" actually means 31 bit, since pointers sign extend.  */
	if (current->personality & ADDR_LIMIT_32BIT)
		limit = 0x80000000;
	else
		limit = TASK_SIZE;

	if (len > limit)
		return -ENOMEM;

	if (flags & MAP_FIXED)
		return addr;

	/* First, see if the given suggestion fits.

	   The OSF/1 loader (/sbin/loader) relies on us returning an
	   address larger than the requested if one exists, which is
	   a terribly broken way to program.

	   That said, I can see the use in being able to suggest not
	   merely specific addresses, but regions of memory -- perhaps
	   this feature should be incorporated into all ports?  */

	if (addr) {
		addr = arch_get_unmapped_area_1 (PAGE_ALIGN(addr), len, limit);
		if (addr != (unsigned long) -ENOMEM)
			return addr;
	}

	/* Next, try allocating at TASK_UNMAPPED_BASE.  */
	addr = arch_get_unmapped_area_1 (PAGE_ALIGN(TASK_UNMAPPED_BASE),
					 len, limit);
	if (addr != (unsigned long) -ENOMEM)
		return addr;

	/* Finally, try allocating in low memory.  */
	addr = arch_get_unmapped_area_1 (PAGE_SIZE, len, limit);

	return addr;
}

#ifdef CONFIG_OSF4_COMPAT

/* Clear top 32 bits of iov_len in the user's buffer for
   compatibility with old versions of OSF/1 where iov_len
   was defined as int. */
static int
osf_fix_iov_len(const struct iovec __user *iov, unsigned long count)
{
	unsigned long i;

	for (i = 0 ; i < count ; i++) {
		int __user *iov_len_high = (int __user *)&iov[i].iov_len + 1;

		if (put_user(0, iov_len_high))
			return -EFAULT;
	}
	return 0;
}

SYSCALL_DEFINE3(osf_readv, unsigned long, fd,
		const struct iovec __user *, vector, unsigned long, count)
{
	if (unlikely(personality(current->personality) == PER_OSF4))
		if (osf_fix_iov_len(vector, count))
			return -EFAULT;
	return sys_readv(fd, vector, count);
}

SYSCALL_DEFINE3(osf_writev, unsigned long, fd,
		const struct iovec __user *, vector, unsigned long, count)
{
	if (unlikely(personality(current->personality) == PER_OSF4))
		if (osf_fix_iov_len(vector, count))
			return -EFAULT;
	return sys_writev(fd, vector, count);
}

#endif

SYSCALL_DEFINE2(osf_getpriority, int, which, int, who)
{
	int prio = sys_getpriority(which, who);
	if (prio >= 0) {
		/* Return value is the unbiased priority, i.e. 20 - prio.
		   This does result in negative return values, so signal
		   no error */
		force_successful_syscall_return();
		prio = 20 - prio;
	}
	return prio;
}

SYSCALL_DEFINE0(getxuid)
{
	current_pt_regs()->r20 = sys_geteuid();
	return sys_getuid();
}

SYSCALL_DEFINE0(getxgid)
{
	current_pt_regs()->r20 = sys_getegid();
	return sys_getgid();
}

SYSCALL_DEFINE0(getxpid)
{
	current_pt_regs()->r20 = sys_getppid();
	return sys_getpid();
}

SYSCALL_DEFINE0(alpha_pipe)
{
	int fd[2];
	int res = do_pipe_flags(fd, 0);
	if (!res) {
		/* The return values are in $0 and $20.  */
		current_pt_regs()->r20 = fd[1];
		res = fd[0];
	}
	return res;
}

SYSCALL_DEFINE1(sethae, unsigned long, val)
{
	current_pt_regs()->hae = val;
	return 0;
}