forked from torvalds/linux
-
Notifications
You must be signed in to change notification settings - Fork 0
/
nfs4xdr.c
7725 lines (6953 loc) · 201 KB
/
nfs4xdr.c
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
/*
* fs/nfs/nfs4xdr.c
*
* Client-side XDR for NFSv4.
*
* Copyright (c) 2002 The Regents of the University of Michigan.
* All rights reserved.
*
* Kendrick Smith <[email protected]>
* Andy Adamson <[email protected]>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <linux/param.h>
#include <linux/time.h>
#include <linux/mm.h>
#include <linux/errno.h>
#include <linux/string.h>
#include <linux/in.h>
#include <linux/pagemap.h>
#include <linux/proc_fs.h>
#include <linux/kdev_t.h>
#include <linux/module.h>
#include <linux/utsname.h>
#include <linux/sunrpc/clnt.h>
#include <linux/sunrpc/msg_prot.h>
#include <linux/sunrpc/gss_api.h>
#include <linux/nfs.h>
#include <linux/nfs4.h>
#include <linux/nfs_fs.h>
#include "nfs4_fs.h"
#include "nfs4trace.h"
#include "internal.h"
#include "nfs4idmap.h"
#include "nfs4session.h"
#include "pnfs.h"
#include "netns.h"
#define NFSDBG_FACILITY NFSDBG_XDR
/* Mapping from NFS error code to "errno" error code. */
#define errno_NFSERR_IO EIO
struct compound_hdr;
static int nfs4_stat_to_errno(int);
static void encode_layoutget(struct xdr_stream *xdr,
const struct nfs4_layoutget_args *args,
struct compound_hdr *hdr);
static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req,
struct nfs4_layoutget_res *res);
/* NFSv4 COMPOUND tags are only wanted for debugging purposes */
#ifdef DEBUG
#define NFS4_MAXTAGLEN 20
#else
#define NFS4_MAXTAGLEN 0
#endif
/* lock,open owner id:
* we currently use size 2 (u64) out of (NFS4_OPAQUE_LIMIT >> 2)
*/
#define pagepad_maxsz (1)
#define open_owner_id_maxsz (1 + 2 + 1 + 1 + 2)
#define lock_owner_id_maxsz (1 + 1 + 4)
#define decode_lockowner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
#define compound_encode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2))
#define compound_decode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2))
#define op_encode_hdr_maxsz (1)
#define op_decode_hdr_maxsz (2)
#define encode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
#define decode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
#define encode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
#define decode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
#define encode_putfh_maxsz (op_encode_hdr_maxsz + 1 + \
(NFS4_FHSIZE >> 2))
#define decode_putfh_maxsz (op_decode_hdr_maxsz)
#define encode_putrootfh_maxsz (op_encode_hdr_maxsz)
#define decode_putrootfh_maxsz (op_decode_hdr_maxsz)
#define encode_getfh_maxsz (op_encode_hdr_maxsz)
#define decode_getfh_maxsz (op_decode_hdr_maxsz + 1 + \
((3+NFS4_FHSIZE) >> 2))
#define nfs4_fattr_bitmap_maxsz 4
#define encode_getattr_maxsz (op_encode_hdr_maxsz + nfs4_fattr_bitmap_maxsz)
#define nfstime4_maxsz (3)
#define nfs4_name_maxsz (1 + ((3 + NFS4_MAXNAMLEN) >> 2))
#define nfs4_path_maxsz (1 + ((3 + NFS4_MAXPATHLEN) >> 2))
#define nfs4_owner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
#define nfs4_group_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
#ifdef CONFIG_NFS_V4_SECURITY_LABEL
/* PI(4 bytes) + LFS(4 bytes) + 1(for null terminator?) + MAXLABELLEN */
#define nfs4_label_maxsz (4 + 4 + 1 + XDR_QUADLEN(NFS4_MAXLABELLEN))
#else
#define nfs4_label_maxsz 0
#endif
/* We support only one layout type per file system */
#define decode_mdsthreshold_maxsz (1 + 1 + nfs4_fattr_bitmap_maxsz + 1 + 8)
/* This is based on getfattr, which uses the most attributes: */
#define nfs4_fattr_value_maxsz (1 + (1 + 2 + 2 + 4 + 2 + 1 + 1 + 2 + 2 + \
3*nfstime4_maxsz + \
nfs4_owner_maxsz + \
nfs4_group_maxsz + nfs4_label_maxsz + \
decode_mdsthreshold_maxsz))
#define nfs4_fattr_maxsz (nfs4_fattr_bitmap_maxsz + \
nfs4_fattr_value_maxsz)
#define decode_getattr_maxsz (op_decode_hdr_maxsz + nfs4_fattr_maxsz)
#define encode_attrs_maxsz (nfs4_fattr_bitmap_maxsz + \
1 + 2 + 1 + \
nfs4_owner_maxsz + \
nfs4_group_maxsz + \
nfs4_label_maxsz + \
1 + nfstime4_maxsz + \
1 + nfstime4_maxsz)
#define encode_savefh_maxsz (op_encode_hdr_maxsz)
#define decode_savefh_maxsz (op_decode_hdr_maxsz)
#define encode_restorefh_maxsz (op_encode_hdr_maxsz)
#define decode_restorefh_maxsz (op_decode_hdr_maxsz)
#define encode_fsinfo_maxsz (encode_getattr_maxsz)
/* The 5 accounts for the PNFS attributes, and assumes that at most three
* layout types will be returned.
*/
#define decode_fsinfo_maxsz (op_decode_hdr_maxsz + \
nfs4_fattr_bitmap_maxsz + 1 + \
1 /* lease time */ + \
2 /* max filesize */ + \
2 /* max read */ + \
2 /* max write */ + \
nfstime4_maxsz /* time delta */ + \
5 /* fs layout types */ + \
1 /* layout blksize */ + \
1 /* clone blksize */ + \
1 /* change attr type */ + \
1 /* xattr support */)
#define encode_renew_maxsz (op_encode_hdr_maxsz + 3)
#define decode_renew_maxsz (op_decode_hdr_maxsz)
#define encode_setclientid_maxsz \
(op_encode_hdr_maxsz + \
XDR_QUADLEN(NFS4_VERIFIER_SIZE) + \
/* client name */ \
1 + XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
1 /* sc_prog */ + \
1 + XDR_QUADLEN(RPCBIND_MAXNETIDLEN) + \
1 + XDR_QUADLEN(RPCBIND_MAXUADDRLEN) + \
1) /* sc_cb_ident */
#define decode_setclientid_maxsz \
(op_decode_hdr_maxsz + \
2 /* clientid */ + \
XDR_QUADLEN(NFS4_VERIFIER_SIZE) + \
1 + XDR_QUADLEN(RPCBIND_MAXNETIDLEN) + \
1 + XDR_QUADLEN(RPCBIND_MAXUADDRLEN))
#define encode_setclientid_confirm_maxsz \
(op_encode_hdr_maxsz + \
3 + (NFS4_VERIFIER_SIZE >> 2))
#define decode_setclientid_confirm_maxsz \
(op_decode_hdr_maxsz)
#define encode_lookup_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz)
#define decode_lookup_maxsz (op_decode_hdr_maxsz)
#define encode_lookupp_maxsz (op_encode_hdr_maxsz)
#define decode_lookupp_maxsz (op_decode_hdr_maxsz)
#define encode_share_access_maxsz \
(2)
#define encode_createmode_maxsz (1 + encode_attrs_maxsz + encode_verifier_maxsz)
#define encode_opentype_maxsz (1 + encode_createmode_maxsz)
#define encode_claim_null_maxsz (1 + nfs4_name_maxsz)
#define encode_open_maxsz (op_encode_hdr_maxsz + \
2 + encode_share_access_maxsz + 2 + \
open_owner_id_maxsz + \
encode_opentype_maxsz + \
encode_claim_null_maxsz)
#define decode_space_limit_maxsz (3)
#define decode_ace_maxsz (3 + nfs4_owner_maxsz)
#define decode_delegation_maxsz (1 + decode_stateid_maxsz + 1 + \
decode_space_limit_maxsz + \
decode_ace_maxsz)
#define decode_change_info_maxsz (5)
#define decode_open_maxsz (op_decode_hdr_maxsz + \
decode_stateid_maxsz + \
decode_change_info_maxsz + 1 + \
nfs4_fattr_bitmap_maxsz + \
decode_delegation_maxsz)
#define encode_open_confirm_maxsz \
(op_encode_hdr_maxsz + \
encode_stateid_maxsz + 1)
#define decode_open_confirm_maxsz \
(op_decode_hdr_maxsz + \
decode_stateid_maxsz)
#define encode_open_downgrade_maxsz \
(op_encode_hdr_maxsz + \
encode_stateid_maxsz + 1 + \
encode_share_access_maxsz)
#define decode_open_downgrade_maxsz \
(op_decode_hdr_maxsz + \
decode_stateid_maxsz)
#define encode_close_maxsz (op_encode_hdr_maxsz + \
1 + encode_stateid_maxsz)
#define decode_close_maxsz (op_decode_hdr_maxsz + \
decode_stateid_maxsz)
#define encode_setattr_maxsz (op_encode_hdr_maxsz + \
encode_stateid_maxsz + \
encode_attrs_maxsz)
#define decode_setattr_maxsz (op_decode_hdr_maxsz + \
nfs4_fattr_bitmap_maxsz)
#define encode_read_maxsz (op_encode_hdr_maxsz + \
encode_stateid_maxsz + 3)
#define decode_read_maxsz (op_decode_hdr_maxsz + 2 + pagepad_maxsz)
#define encode_readdir_maxsz (op_encode_hdr_maxsz + \
2 + encode_verifier_maxsz + 5 + \
nfs4_label_maxsz)
#define decode_readdir_maxsz (op_decode_hdr_maxsz + \
decode_verifier_maxsz + pagepad_maxsz)
#define encode_readlink_maxsz (op_encode_hdr_maxsz)
#define decode_readlink_maxsz (op_decode_hdr_maxsz + 1 + pagepad_maxsz)
#define encode_write_maxsz (op_encode_hdr_maxsz + \
encode_stateid_maxsz + 4)
#define decode_write_maxsz (op_decode_hdr_maxsz + \
2 + decode_verifier_maxsz)
#define encode_commit_maxsz (op_encode_hdr_maxsz + 3)
#define decode_commit_maxsz (op_decode_hdr_maxsz + \
decode_verifier_maxsz)
#define encode_remove_maxsz (op_encode_hdr_maxsz + \
nfs4_name_maxsz)
#define decode_remove_maxsz (op_decode_hdr_maxsz + \
decode_change_info_maxsz)
#define encode_rename_maxsz (op_encode_hdr_maxsz + \
2 * nfs4_name_maxsz)
#define decode_rename_maxsz (op_decode_hdr_maxsz + \
decode_change_info_maxsz + \
decode_change_info_maxsz)
#define encode_link_maxsz (op_encode_hdr_maxsz + \
nfs4_name_maxsz)
#define decode_link_maxsz (op_decode_hdr_maxsz + decode_change_info_maxsz)
#define encode_lockowner_maxsz (7)
#define encode_lock_maxsz (op_encode_hdr_maxsz + \
7 + \
1 + encode_stateid_maxsz + 1 + \
encode_lockowner_maxsz)
#define decode_lock_denied_maxsz \
(8 + decode_lockowner_maxsz)
#define decode_lock_maxsz (op_decode_hdr_maxsz + \
decode_lock_denied_maxsz)
#define encode_lockt_maxsz (op_encode_hdr_maxsz + 5 + \
encode_lockowner_maxsz)
#define decode_lockt_maxsz (op_decode_hdr_maxsz + \
decode_lock_denied_maxsz)
#define encode_locku_maxsz (op_encode_hdr_maxsz + 3 + \
encode_stateid_maxsz + \
4)
#define decode_locku_maxsz (op_decode_hdr_maxsz + \
decode_stateid_maxsz)
#define encode_release_lockowner_maxsz \
(op_encode_hdr_maxsz + \
encode_lockowner_maxsz)
#define decode_release_lockowner_maxsz \
(op_decode_hdr_maxsz)
#define encode_access_maxsz (op_encode_hdr_maxsz + 1)
#define decode_access_maxsz (op_decode_hdr_maxsz + 2)
#define encode_symlink_maxsz (op_encode_hdr_maxsz + \
1 + nfs4_name_maxsz + \
1 + \
nfs4_fattr_maxsz)
#define decode_symlink_maxsz (op_decode_hdr_maxsz + 8)
#define encode_create_maxsz (op_encode_hdr_maxsz + \
1 + 2 + nfs4_name_maxsz + \
encode_attrs_maxsz)
#define decode_create_maxsz (op_decode_hdr_maxsz + \
decode_change_info_maxsz + \
nfs4_fattr_bitmap_maxsz)
#define encode_statfs_maxsz (encode_getattr_maxsz)
#define decode_statfs_maxsz (decode_getattr_maxsz)
#define encode_delegreturn_maxsz (op_encode_hdr_maxsz + 4)
#define decode_delegreturn_maxsz (op_decode_hdr_maxsz)
#define encode_getacl_maxsz (encode_getattr_maxsz)
#define decode_getacl_maxsz (op_decode_hdr_maxsz + \
nfs4_fattr_bitmap_maxsz + 1 + pagepad_maxsz)
#define encode_setacl_maxsz (op_encode_hdr_maxsz + \
encode_stateid_maxsz + 3)
#define decode_setacl_maxsz (decode_setattr_maxsz)
#define encode_fs_locations_maxsz \
(encode_getattr_maxsz)
#define decode_fs_locations_maxsz \
(pagepad_maxsz)
#define encode_secinfo_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz)
#define decode_secinfo_maxsz (op_decode_hdr_maxsz + 1 + ((NFS_MAX_SECFLAVORS * (16 + GSS_OID_MAX_LEN)) / 4))
#if defined(CONFIG_NFS_V4_1)
#define NFS4_MAX_MACHINE_NAME_LEN (64)
#define IMPL_NAME_LIMIT (sizeof(utsname()->sysname) + sizeof(utsname()->release) + \
sizeof(utsname()->version) + sizeof(utsname()->machine) + 8)
#define encode_exchange_id_maxsz (op_encode_hdr_maxsz + \
encode_verifier_maxsz + \
1 /* co_ownerid.len */ + \
/* eia_clientowner */ \
1 + XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
1 /* flags */ + \
1 /* spa_how */ + \
/* max is SP4_MACH_CRED (for now) */ + \
1 + NFS4_OP_MAP_NUM_WORDS + \
1 + NFS4_OP_MAP_NUM_WORDS + \
1 /* implementation id array of size 1 */ + \
1 /* nii_domain */ + \
XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
1 /* nii_name */ + \
XDR_QUADLEN(IMPL_NAME_LIMIT) + \
3 /* nii_date */)
#define decode_exchange_id_maxsz (op_decode_hdr_maxsz + \
2 /* eir_clientid */ + \
1 /* eir_sequenceid */ + \
1 /* eir_flags */ + \
1 /* spr_how */ + \
/* max is SP4_MACH_CRED (for now) */ + \
1 + NFS4_OP_MAP_NUM_WORDS + \
1 + NFS4_OP_MAP_NUM_WORDS + \
2 /* eir_server_owner.so_minor_id */ + \
/* eir_server_owner.so_major_id<> */ \
XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \
/* eir_server_scope<> */ \
XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \
1 /* eir_server_impl_id array length */ + \
1 /* nii_domain */ + \
XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
1 /* nii_name */ + \
XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
3 /* nii_date */)
#define encode_channel_attrs_maxsz (6 + 1 /* ca_rdma_ird.len (0) */)
#define decode_channel_attrs_maxsz (6 + \
1 /* ca_rdma_ird.len */ + \
1 /* ca_rdma_ird */)
#define encode_create_session_maxsz (op_encode_hdr_maxsz + \
2 /* csa_clientid */ + \
1 /* csa_sequence */ + \
1 /* csa_flags */ + \
encode_channel_attrs_maxsz + \
encode_channel_attrs_maxsz + \
1 /* csa_cb_program */ + \
1 /* csa_sec_parms.len (1) */ + \
1 /* cb_secflavor (AUTH_SYS) */ + \
1 /* stamp */ + \
1 /* machinename.len */ + \
XDR_QUADLEN(NFS4_MAX_MACHINE_NAME_LEN) + \
1 /* uid */ + \
1 /* gid */ + \
1 /* gids.len (0) */)
#define decode_create_session_maxsz (op_decode_hdr_maxsz + \
XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
1 /* csr_sequence */ + \
1 /* csr_flags */ + \
decode_channel_attrs_maxsz + \
decode_channel_attrs_maxsz)
#define encode_bind_conn_to_session_maxsz (op_encode_hdr_maxsz + \
/* bctsa_sessid */ \
XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
1 /* bctsa_dir */ + \
1 /* bctsa_use_conn_in_rdma_mode */)
#define decode_bind_conn_to_session_maxsz (op_decode_hdr_maxsz + \
/* bctsr_sessid */ \
XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
1 /* bctsr_dir */ + \
1 /* bctsr_use_conn_in_rdma_mode */)
#define encode_destroy_session_maxsz (op_encode_hdr_maxsz + 4)
#define decode_destroy_session_maxsz (op_decode_hdr_maxsz)
#define encode_destroy_clientid_maxsz (op_encode_hdr_maxsz + 2)
#define decode_destroy_clientid_maxsz (op_decode_hdr_maxsz)
#define encode_sequence_maxsz (op_encode_hdr_maxsz + \
XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 4)
#define decode_sequence_maxsz (op_decode_hdr_maxsz + \
XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 5)
#define encode_reclaim_complete_maxsz (op_encode_hdr_maxsz + 4)
#define decode_reclaim_complete_maxsz (op_decode_hdr_maxsz + 4)
#define encode_getdeviceinfo_maxsz (op_encode_hdr_maxsz + \
XDR_QUADLEN(NFS4_DEVICEID4_SIZE) + \
1 /* layout type */ + \
1 /* maxcount */ + \
1 /* bitmap size */ + \
1 /* notification bitmap length */ + \
1 /* notification bitmap, word 0 */)
#define decode_getdeviceinfo_maxsz (op_decode_hdr_maxsz + \
1 /* layout type */ + \
1 /* opaque devaddr4 length */ + \
/* devaddr4 payload is read into page */ \
1 /* notification bitmap length */ + \
1 /* notification bitmap, word 0 */ + \
pagepad_maxsz /* possible XDR padding */)
#define encode_layoutget_maxsz (op_encode_hdr_maxsz + 10 + \
encode_stateid_maxsz)
#define decode_layoutget_maxsz (op_decode_hdr_maxsz + 8 + \
decode_stateid_maxsz + \
XDR_QUADLEN(PNFS_LAYOUT_MAXSIZE) + \
pagepad_maxsz)
#define encode_layoutcommit_maxsz (op_encode_hdr_maxsz + \
2 /* offset */ + \
2 /* length */ + \
1 /* reclaim */ + \
encode_stateid_maxsz + \
1 /* new offset (true) */ + \
2 /* last byte written */ + \
1 /* nt_timechanged (false) */ + \
1 /* layoutupdate4 layout type */ + \
1 /* layoutupdate4 opaqueue len */)
/* the actual content of layoutupdate4 should
be allocated by drivers and spliced in
using xdr_write_pages */
#define decode_layoutcommit_maxsz (op_decode_hdr_maxsz + 3)
#define encode_layoutreturn_maxsz (8 + op_encode_hdr_maxsz + \
encode_stateid_maxsz + \
1 + \
XDR_QUADLEN(NFS4_OPAQUE_LIMIT))
#define decode_layoutreturn_maxsz (op_decode_hdr_maxsz + \
1 + decode_stateid_maxsz)
#define encode_secinfo_no_name_maxsz (op_encode_hdr_maxsz + 1)
#define decode_secinfo_no_name_maxsz decode_secinfo_maxsz
#define encode_test_stateid_maxsz (op_encode_hdr_maxsz + 2 + \
XDR_QUADLEN(NFS4_STATEID_SIZE))
#define decode_test_stateid_maxsz (op_decode_hdr_maxsz + 2 + 1)
#define encode_free_stateid_maxsz (op_encode_hdr_maxsz + 1 + \
XDR_QUADLEN(NFS4_STATEID_SIZE))
#define decode_free_stateid_maxsz (op_decode_hdr_maxsz)
#else /* CONFIG_NFS_V4_1 */
#define encode_sequence_maxsz 0
#define decode_sequence_maxsz 0
#define encode_layoutreturn_maxsz 0
#define decode_layoutreturn_maxsz 0
#define encode_layoutget_maxsz 0
#define decode_layoutget_maxsz 0
#endif /* CONFIG_NFS_V4_1 */
#define NFS4_enc_compound_sz (1024) /* XXX: large enough? */
#define NFS4_dec_compound_sz (1024) /* XXX: large enough? */
#define NFS4_enc_read_sz (compound_encode_hdr_maxsz + \
encode_sequence_maxsz + \
encode_putfh_maxsz + \
encode_read_maxsz)
#define NFS4_dec_read_sz (compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_putfh_maxsz + \
decode_read_maxsz)
#define NFS4_enc_readlink_sz (compound_encode_hdr_maxsz + \
encode_sequence_maxsz + \
encode_putfh_maxsz + \
encode_readlink_maxsz)
#define NFS4_dec_readlink_sz (compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_putfh_maxsz + \
decode_readlink_maxsz)
#define NFS4_enc_readdir_sz (compound_encode_hdr_maxsz + \
encode_sequence_maxsz + \
encode_putfh_maxsz + \
encode_readdir_maxsz)
#define NFS4_dec_readdir_sz (compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_putfh_maxsz + \
decode_readdir_maxsz)
#define NFS4_enc_write_sz (compound_encode_hdr_maxsz + \
encode_sequence_maxsz + \
encode_putfh_maxsz + \
encode_write_maxsz + \
encode_getattr_maxsz)
#define NFS4_dec_write_sz (compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_putfh_maxsz + \
decode_write_maxsz + \
decode_getattr_maxsz)
#define NFS4_enc_commit_sz (compound_encode_hdr_maxsz + \
encode_sequence_maxsz + \
encode_putfh_maxsz + \
encode_commit_maxsz)
#define NFS4_dec_commit_sz (compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_putfh_maxsz + \
decode_commit_maxsz)
#define NFS4_enc_open_sz (compound_encode_hdr_maxsz + \
encode_sequence_maxsz + \
encode_putfh_maxsz + \
encode_open_maxsz + \
encode_access_maxsz + \
encode_getfh_maxsz + \
encode_getattr_maxsz + \
encode_layoutget_maxsz)
#define NFS4_dec_open_sz (compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_putfh_maxsz + \
decode_open_maxsz + \
decode_access_maxsz + \
decode_getfh_maxsz + \
decode_getattr_maxsz + \
decode_layoutget_maxsz)
#define NFS4_enc_open_confirm_sz \
(compound_encode_hdr_maxsz + \
encode_putfh_maxsz + \
encode_open_confirm_maxsz)
#define NFS4_dec_open_confirm_sz \
(compound_decode_hdr_maxsz + \
decode_putfh_maxsz + \
decode_open_confirm_maxsz)
#define NFS4_enc_open_noattr_sz (compound_encode_hdr_maxsz + \
encode_sequence_maxsz + \
encode_putfh_maxsz + \
encode_open_maxsz + \
encode_access_maxsz + \
encode_getattr_maxsz + \
encode_layoutget_maxsz)
#define NFS4_dec_open_noattr_sz (compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_putfh_maxsz + \
decode_open_maxsz + \
decode_access_maxsz + \
decode_getattr_maxsz + \
decode_layoutget_maxsz)
#define NFS4_enc_open_downgrade_sz \
(compound_encode_hdr_maxsz + \
encode_sequence_maxsz + \
encode_putfh_maxsz + \
encode_layoutreturn_maxsz + \
encode_open_downgrade_maxsz)
#define NFS4_dec_open_downgrade_sz \
(compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_putfh_maxsz + \
decode_layoutreturn_maxsz + \
decode_open_downgrade_maxsz)
#define NFS4_enc_close_sz (compound_encode_hdr_maxsz + \
encode_sequence_maxsz + \
encode_putfh_maxsz + \
encode_layoutreturn_maxsz + \
encode_close_maxsz + \
encode_getattr_maxsz)
#define NFS4_dec_close_sz (compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_putfh_maxsz + \
decode_layoutreturn_maxsz + \
decode_close_maxsz + \
decode_getattr_maxsz)
#define NFS4_enc_setattr_sz (compound_encode_hdr_maxsz + \
encode_sequence_maxsz + \
encode_putfh_maxsz + \
encode_setattr_maxsz + \
encode_getattr_maxsz)
#define NFS4_dec_setattr_sz (compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_putfh_maxsz + \
decode_setattr_maxsz + \
decode_getattr_maxsz)
#define NFS4_enc_fsinfo_sz (compound_encode_hdr_maxsz + \
encode_sequence_maxsz + \
encode_putfh_maxsz + \
encode_fsinfo_maxsz)
#define NFS4_dec_fsinfo_sz (compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_putfh_maxsz + \
decode_fsinfo_maxsz)
#define NFS4_enc_renew_sz (compound_encode_hdr_maxsz + \
encode_renew_maxsz)
#define NFS4_dec_renew_sz (compound_decode_hdr_maxsz + \
decode_renew_maxsz)
#define NFS4_enc_setclientid_sz (compound_encode_hdr_maxsz + \
encode_setclientid_maxsz)
#define NFS4_dec_setclientid_sz (compound_decode_hdr_maxsz + \
decode_setclientid_maxsz)
#define NFS4_enc_setclientid_confirm_sz \
(compound_encode_hdr_maxsz + \
encode_setclientid_confirm_maxsz)
#define NFS4_dec_setclientid_confirm_sz \
(compound_decode_hdr_maxsz + \
decode_setclientid_confirm_maxsz)
#define NFS4_enc_lock_sz (compound_encode_hdr_maxsz + \
encode_sequence_maxsz + \
encode_putfh_maxsz + \
encode_lock_maxsz)
#define NFS4_dec_lock_sz (compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_putfh_maxsz + \
decode_lock_maxsz)
#define NFS4_enc_lockt_sz (compound_encode_hdr_maxsz + \
encode_sequence_maxsz + \
encode_putfh_maxsz + \
encode_lockt_maxsz)
#define NFS4_dec_lockt_sz (compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_putfh_maxsz + \
decode_lockt_maxsz)
#define NFS4_enc_locku_sz (compound_encode_hdr_maxsz + \
encode_sequence_maxsz + \
encode_putfh_maxsz + \
encode_locku_maxsz)
#define NFS4_dec_locku_sz (compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_putfh_maxsz + \
decode_locku_maxsz)
#define NFS4_enc_release_lockowner_sz \
(compound_encode_hdr_maxsz + \
encode_lockowner_maxsz)
#define NFS4_dec_release_lockowner_sz \
(compound_decode_hdr_maxsz + \
decode_lockowner_maxsz)
#define NFS4_enc_access_sz (compound_encode_hdr_maxsz + \
encode_sequence_maxsz + \
encode_putfh_maxsz + \
encode_access_maxsz + \
encode_getattr_maxsz)
#define NFS4_dec_access_sz (compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_putfh_maxsz + \
decode_access_maxsz + \
decode_getattr_maxsz)
#define NFS4_enc_getattr_sz (compound_encode_hdr_maxsz + \
encode_sequence_maxsz + \
encode_putfh_maxsz + \
encode_getattr_maxsz + \
encode_renew_maxsz)
#define NFS4_dec_getattr_sz (compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_putfh_maxsz + \
decode_getattr_maxsz + \
decode_renew_maxsz)
#define NFS4_enc_lookup_sz (compound_encode_hdr_maxsz + \
encode_sequence_maxsz + \
encode_putfh_maxsz + \
encode_lookup_maxsz + \
encode_getattr_maxsz + \
encode_getfh_maxsz)
#define NFS4_dec_lookup_sz (compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_putfh_maxsz + \
decode_lookup_maxsz + \
decode_getattr_maxsz + \
decode_getfh_maxsz)
#define NFS4_enc_lookupp_sz (compound_encode_hdr_maxsz + \
encode_sequence_maxsz + \
encode_putfh_maxsz + \
encode_lookupp_maxsz + \
encode_getattr_maxsz + \
encode_getfh_maxsz)
#define NFS4_dec_lookupp_sz (compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_putfh_maxsz + \
decode_lookupp_maxsz + \
decode_getattr_maxsz + \
decode_getfh_maxsz)
#define NFS4_enc_lookup_root_sz (compound_encode_hdr_maxsz + \
encode_sequence_maxsz + \
encode_putrootfh_maxsz + \
encode_getattr_maxsz + \
encode_getfh_maxsz)
#define NFS4_dec_lookup_root_sz (compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_putrootfh_maxsz + \
decode_getattr_maxsz + \
decode_getfh_maxsz)
#define NFS4_enc_remove_sz (compound_encode_hdr_maxsz + \
encode_sequence_maxsz + \
encode_putfh_maxsz + \
encode_remove_maxsz)
#define NFS4_dec_remove_sz (compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_putfh_maxsz + \
decode_remove_maxsz)
#define NFS4_enc_rename_sz (compound_encode_hdr_maxsz + \
encode_sequence_maxsz + \
encode_putfh_maxsz + \
encode_savefh_maxsz + \
encode_putfh_maxsz + \
encode_rename_maxsz)
#define NFS4_dec_rename_sz (compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_putfh_maxsz + \
decode_savefh_maxsz + \
decode_putfh_maxsz + \
decode_rename_maxsz)
#define NFS4_enc_link_sz (compound_encode_hdr_maxsz + \
encode_sequence_maxsz + \
encode_putfh_maxsz + \
encode_savefh_maxsz + \
encode_putfh_maxsz + \
encode_link_maxsz + \
encode_restorefh_maxsz + \
encode_getattr_maxsz)
#define NFS4_dec_link_sz (compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_putfh_maxsz + \
decode_savefh_maxsz + \
decode_putfh_maxsz + \
decode_link_maxsz + \
decode_restorefh_maxsz + \
decode_getattr_maxsz)
#define NFS4_enc_symlink_sz (compound_encode_hdr_maxsz + \
encode_sequence_maxsz + \
encode_putfh_maxsz + \
encode_symlink_maxsz + \
encode_getattr_maxsz + \
encode_getfh_maxsz)
#define NFS4_dec_symlink_sz (compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_putfh_maxsz + \
decode_symlink_maxsz + \
decode_getattr_maxsz + \
decode_getfh_maxsz)
#define NFS4_enc_create_sz (compound_encode_hdr_maxsz + \
encode_sequence_maxsz + \
encode_putfh_maxsz + \
encode_create_maxsz + \
encode_getfh_maxsz + \
encode_getattr_maxsz)
#define NFS4_dec_create_sz (compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_putfh_maxsz + \
decode_create_maxsz + \
decode_getfh_maxsz + \
decode_getattr_maxsz)
#define NFS4_enc_pathconf_sz (compound_encode_hdr_maxsz + \
encode_sequence_maxsz + \
encode_putfh_maxsz + \
encode_getattr_maxsz)
#define NFS4_dec_pathconf_sz (compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_putfh_maxsz + \
decode_getattr_maxsz)
#define NFS4_enc_statfs_sz (compound_encode_hdr_maxsz + \
encode_sequence_maxsz + \
encode_putfh_maxsz + \
encode_statfs_maxsz)
#define NFS4_dec_statfs_sz (compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_putfh_maxsz + \
decode_statfs_maxsz)
#define NFS4_enc_server_caps_sz (compound_encode_hdr_maxsz + \
encode_sequence_maxsz + \
encode_putfh_maxsz + \
encode_getattr_maxsz)
#define NFS4_dec_server_caps_sz (compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_putfh_maxsz + \
decode_getattr_maxsz)
#define NFS4_enc_delegreturn_sz (compound_encode_hdr_maxsz + \
encode_sequence_maxsz + \
encode_putfh_maxsz + \
encode_layoutreturn_maxsz + \
encode_delegreturn_maxsz + \
encode_getattr_maxsz)
#define NFS4_dec_delegreturn_sz (compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_putfh_maxsz + \
decode_layoutreturn_maxsz + \
decode_delegreturn_maxsz + \
decode_getattr_maxsz)
#define NFS4_enc_getacl_sz (compound_encode_hdr_maxsz + \
encode_sequence_maxsz + \
encode_putfh_maxsz + \
encode_getacl_maxsz)
#define NFS4_dec_getacl_sz (compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_putfh_maxsz + \
decode_getacl_maxsz)
#define NFS4_enc_setacl_sz (compound_encode_hdr_maxsz + \
encode_sequence_maxsz + \
encode_putfh_maxsz + \
encode_setacl_maxsz)
#define NFS4_dec_setacl_sz (compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_putfh_maxsz + \
decode_setacl_maxsz)
#define NFS4_enc_fs_locations_sz \
(compound_encode_hdr_maxsz + \
encode_sequence_maxsz + \
encode_putfh_maxsz + \
encode_lookup_maxsz + \
encode_fs_locations_maxsz + \
encode_renew_maxsz)
#define NFS4_dec_fs_locations_sz \
(compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_putfh_maxsz + \
decode_lookup_maxsz + \
decode_fs_locations_maxsz + \
decode_renew_maxsz)
#define NFS4_enc_secinfo_sz (compound_encode_hdr_maxsz + \
encode_sequence_maxsz + \
encode_putfh_maxsz + \
encode_secinfo_maxsz)
#define NFS4_dec_secinfo_sz (compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_putfh_maxsz + \
decode_secinfo_maxsz)
#define NFS4_enc_fsid_present_sz \
(compound_encode_hdr_maxsz + \
encode_sequence_maxsz + \
encode_putfh_maxsz + \
encode_getfh_maxsz + \
encode_renew_maxsz)
#define NFS4_dec_fsid_present_sz \
(compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_putfh_maxsz + \
decode_getfh_maxsz + \
decode_renew_maxsz)
#if defined(CONFIG_NFS_V4_1)
#define NFS4_enc_bind_conn_to_session_sz \
(compound_encode_hdr_maxsz + \
encode_bind_conn_to_session_maxsz)
#define NFS4_dec_bind_conn_to_session_sz \
(compound_decode_hdr_maxsz + \
decode_bind_conn_to_session_maxsz)
#define NFS4_enc_exchange_id_sz \
(compound_encode_hdr_maxsz + \
encode_exchange_id_maxsz)
#define NFS4_dec_exchange_id_sz \
(compound_decode_hdr_maxsz + \
decode_exchange_id_maxsz)
#define NFS4_enc_create_session_sz \
(compound_encode_hdr_maxsz + \
encode_create_session_maxsz)
#define NFS4_dec_create_session_sz \
(compound_decode_hdr_maxsz + \
decode_create_session_maxsz)
#define NFS4_enc_destroy_session_sz (compound_encode_hdr_maxsz + \
encode_destroy_session_maxsz)
#define NFS4_dec_destroy_session_sz (compound_decode_hdr_maxsz + \
decode_destroy_session_maxsz)
#define NFS4_enc_destroy_clientid_sz (compound_encode_hdr_maxsz + \
encode_destroy_clientid_maxsz)
#define NFS4_dec_destroy_clientid_sz (compound_decode_hdr_maxsz + \
decode_destroy_clientid_maxsz)
#define NFS4_enc_sequence_sz \
(compound_decode_hdr_maxsz + \
encode_sequence_maxsz)
#define NFS4_dec_sequence_sz \
(compound_decode_hdr_maxsz + \
decode_sequence_maxsz)
#endif
#define NFS4_enc_get_lease_time_sz (compound_encode_hdr_maxsz + \
encode_sequence_maxsz + \
encode_putrootfh_maxsz + \
encode_fsinfo_maxsz)
#define NFS4_dec_get_lease_time_sz (compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_putrootfh_maxsz + \
decode_fsinfo_maxsz)
#if defined(CONFIG_NFS_V4_1)
#define NFS4_enc_reclaim_complete_sz (compound_encode_hdr_maxsz + \
encode_sequence_maxsz + \
encode_reclaim_complete_maxsz)
#define NFS4_dec_reclaim_complete_sz (compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_reclaim_complete_maxsz)
#define NFS4_enc_getdeviceinfo_sz (compound_encode_hdr_maxsz + \
encode_sequence_maxsz +\
encode_getdeviceinfo_maxsz)
#define NFS4_dec_getdeviceinfo_sz (compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_getdeviceinfo_maxsz)
#define NFS4_enc_layoutget_sz (compound_encode_hdr_maxsz + \
encode_sequence_maxsz + \
encode_putfh_maxsz + \
encode_layoutget_maxsz)
#define NFS4_dec_layoutget_sz (compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_putfh_maxsz + \
decode_layoutget_maxsz)
#define NFS4_enc_layoutcommit_sz (compound_encode_hdr_maxsz + \
encode_sequence_maxsz +\
encode_putfh_maxsz + \
encode_layoutcommit_maxsz + \
encode_getattr_maxsz)
#define NFS4_dec_layoutcommit_sz (compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_putfh_maxsz + \
decode_layoutcommit_maxsz + \
decode_getattr_maxsz)
#define NFS4_enc_layoutreturn_sz (compound_encode_hdr_maxsz + \
encode_sequence_maxsz + \
encode_putfh_maxsz + \
encode_layoutreturn_maxsz)
#define NFS4_dec_layoutreturn_sz (compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_putfh_maxsz + \
decode_layoutreturn_maxsz)
#define NFS4_enc_secinfo_no_name_sz (compound_encode_hdr_maxsz + \
encode_sequence_maxsz + \
encode_putrootfh_maxsz +\
encode_secinfo_no_name_maxsz)
#define NFS4_dec_secinfo_no_name_sz (compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_putrootfh_maxsz + \
decode_secinfo_no_name_maxsz)
#define NFS4_enc_test_stateid_sz (compound_encode_hdr_maxsz + \
encode_sequence_maxsz + \
encode_test_stateid_maxsz)
#define NFS4_dec_test_stateid_sz (compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_test_stateid_maxsz)
#define NFS4_enc_free_stateid_sz (compound_encode_hdr_maxsz + \
encode_sequence_maxsz + \
encode_free_stateid_maxsz)
#define NFS4_dec_free_stateid_sz (compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_free_stateid_maxsz)
const u32 nfs41_maxwrite_overhead = ((RPC_MAX_HEADER_WITH_AUTH +
compound_encode_hdr_maxsz +
encode_sequence_maxsz +
encode_putfh_maxsz +
encode_getattr_maxsz) *
XDR_UNIT);
const u32 nfs41_maxread_overhead = ((RPC_MAX_HEADER_WITH_AUTH +
compound_decode_hdr_maxsz +
decode_sequence_maxsz +
decode_putfh_maxsz) *
XDR_UNIT);
const u32 nfs41_maxgetdevinfo_overhead = ((RPC_MAX_REPHEADER_WITH_AUTH +
compound_decode_hdr_maxsz +
decode_sequence_maxsz) *
XDR_UNIT);
EXPORT_SYMBOL_GPL(nfs41_maxgetdevinfo_overhead);
#endif /* CONFIG_NFS_V4_1 */
static const umode_t nfs_type2fmt[] = {
[NF4BAD] = 0,
[NF4REG] = S_IFREG,
[NF4DIR] = S_IFDIR,
[NF4BLK] = S_IFBLK,
[NF4CHR] = S_IFCHR,
[NF4LNK] = S_IFLNK,
[NF4SOCK] = S_IFSOCK,
[NF4FIFO] = S_IFIFO,
[NF4ATTRDIR] = 0,
[NF4NAMEDATTR] = 0,
};
struct compound_hdr {
int32_t status;
uint32_t nops;
__be32 * nops_p;
uint32_t taglen;
char * tag;
uint32_t replen; /* expected reply words */
u32 minorversion;
};
static __be32 *reserve_space(struct xdr_stream *xdr, size_t nbytes)
{
__be32 *p = xdr_reserve_space(xdr, nbytes);
BUG_ON(!p);
return p;
}
static void encode_opaque_fixed(struct xdr_stream *xdr, const void *buf, size_t len)
{
WARN_ON_ONCE(xdr_stream_encode_opaque_fixed(xdr, buf, len) < 0);
}
static void encode_string(struct xdr_stream *xdr, unsigned int len, const char *str)
{
WARN_ON_ONCE(xdr_stream_encode_opaque(xdr, str, len) < 0);
}
static void encode_uint32(struct xdr_stream *xdr, u32 n)
{
WARN_ON_ONCE(xdr_stream_encode_u32(xdr, n) < 0);
}
static void encode_uint64(struct xdr_stream *xdr, u64 n)
{
WARN_ON_ONCE(xdr_stream_encode_u64(xdr, n) < 0);
}
static ssize_t xdr_encode_bitmap4(struct xdr_stream *xdr,
const __u32 *bitmap, size_t len)
{
ssize_t ret;
/* Trim empty words */
while (len > 0 && bitmap[len-1] == 0)
len--;
ret = xdr_stream_encode_uint32_array(xdr, bitmap, len);
if (WARN_ON_ONCE(ret < 0))