Bootlin logo

Elixir Cross Referencer

   1
   2
   3
   4
   5
   6
   7
   8
   9
  10
  11
  12
  13
  14
  15
  16
  17
  18
  19
  20
  21
  22
  23
  24
  25
  26
  27
  28
  29
  30
  31
  32
  33
  34
  35
  36
  37
  38
  39
  40
  41
  42
  43
  44
  45
  46
  47
  48
  49
  50
  51
  52
  53
  54
  55
  56
  57
  58
  59
  60
  61
  62
  63
  64
  65
  66
  67
  68
  69
  70
  71
  72
  73
  74
  75
  76
  77
  78
  79
  80
  81
  82
  83
  84
  85
  86
  87
  88
  89
  90
  91
  92
  93
  94
  95
  96
  97
  98
  99
 100
 101
 102
 103
 104
 105
 106
 107
 108
 109
 110
 111
 112
 113
 114
 115
 116
 117
 118
 119
 120
 121
 122
 123
 124
 125
 126
 127
 128
 129
 130
 131
 132
 133
 134
 135
 136
 137
 138
 139
 140
 141
 142
 143
 144
 145
 146
 147
 148
 149
 150
 151
 152
 153
 154
 155
 156
 157
 158
 159
 160
 161
 162
 163
 164
 165
 166
 167
 168
 169
 170
 171
 172
 173
 174
 175
 176
 177
 178
 179
 180
 181
 182
 183
 184
 185
 186
 187
 188
 189
 190
 191
 192
 193
 194
 195
 196
 197
 198
 199
 200
 201
 202
 203
 204
 205
 206
 207
 208
 209
 210
 211
 212
 213
 214
 215
 216
 217
 218
 219
 220
 221
 222
 223
 224
 225
 226
 227
 228
 229
 230
 231
 232
 233
 234
 235
 236
 237
 238
 239
 240
 241
 242
 243
 244
 245
 246
 247
 248
 249
 250
 251
 252
 253
 254
 255
 256
 257
 258
 259
 260
 261
 262
 263
 264
 265
 266
 267
 268
 269
 270
 271
 272
 273
 274
 275
 276
 277
 278
 279
 280
 281
 282
 283
 284
 285
 286
 287
 288
 289
 290
 291
 292
 293
 294
 295
 296
 297
 298
 299
 300
 301
 302
 303
 304
 305
 306
 307
 308
 309
 310
 311
 312
 313
 314
 315
 316
 317
 318
 319
 320
 321
 322
 323
 324
 325
 326
 327
 328
 329
 330
 331
 332
 333
 334
 335
 336
 337
 338
 339
 340
 341
 342
 343
 344
 345
 346
 347
 348
 349
 350
 351
 352
 353
 354
 355
 356
 357
 358
 359
 360
 361
 362
 363
 364
 365
 366
 367
 368
 369
 370
 371
 372
 373
 374
 375
 376
 377
 378
 379
 380
 381
 382
 383
 384
 385
 386
 387
 388
 389
 390
 391
 392
 393
 394
 395
 396
 397
 398
 399
 400
 401
 402
 403
 404
 405
 406
 407
 408
 409
 410
 411
 412
 413
 414
 415
 416
 417
 418
 419
 420
 421
 422
 423
 424
 425
 426
 427
 428
 429
 430
 431
 432
 433
 434
 435
 436
 437
 438
 439
 440
 441
 442
 443
 444
 445
 446
 447
 448
 449
 450
 451
 452
 453
 454
 455
 456
 457
 458
 459
 460
 461
 462
 463
 464
 465
 466
 467
 468
 469
 470
 471
 472
 473
 474
 475
 476
 477
 478
 479
 480
 481
 482
 483
 484
 485
 486
 487
 488
 489
 490
 491
 492
 493
 494
 495
 496
 497
 498
 499
 500
 501
 502
 503
 504
 505
 506
 507
 508
 509
 510
 511
 512
 513
 514
 515
 516
 517
 518
 519
 520
 521
 522
 523
 524
 525
 526
 527
 528
 529
 530
 531
 532
 533
 534
 535
 536
 537
 538
 539
 540
 541
 542
 543
 544
 545
 546
 547
 548
 549
 550
 551
 552
 553
 554
 555
 556
 557
 558
 559
 560
 561
 562
 563
 564
 565
 566
 567
 568
 569
 570
 571
 572
 573
 574
 575
 576
 577
 578
 579
 580
 581
 582
 583
 584
 585
 586
 587
 588
 589
 590
 591
 592
 593
 594
 595
 596
 597
 598
 599
 600
 601
 602
 603
 604
 605
 606
 607
 608
 609
 610
 611
 612
 613
 614
 615
 616
 617
 618
 619
 620
 621
 622
 623
 624
 625
 626
 627
 628
 629
 630
 631
 632
 633
 634
 635
 636
 637
 638
 639
 640
 641
 642
 643
 644
 645
 646
 647
 648
 649
 650
 651
 652
 653
 654
 655
 656
 657
 658
 659
 660
 661
 662
 663
 664
 665
 666
 667
 668
 669
 670
 671
 672
 673
 674
 675
 676
 677
 678
 679
 680
 681
 682
 683
 684
 685
 686
 687
 688
 689
 690
 691
 692
 693
 694
 695
 696
 697
 698
 699
 700
 701
 702
 703
 704
 705
 706
 707
 708
 709
 710
 711
 712
 713
 714
 715
 716
 717
 718
 719
 720
 721
 722
 723
 724
 725
 726
 727
 728
 729
 730
 731
 732
 733
 734
 735
 736
 737
 738
 739
 740
 741
 742
 743
 744
 745
 746
 747
 748
 749
 750
 751
 752
 753
 754
 755
 756
 757
 758
 759
 760
 761
 762
 763
 764
 765
 766
 767
 768
 769
 770
 771
 772
 773
 774
 775
 776
 777
 778
 779
 780
 781
 782
 783
 784
 785
 786
 787
 788
 789
 790
 791
 792
 793
 794
 795
 796
 797
 798
 799
 800
 801
 802
 803
 804
 805
 806
 807
 808
 809
 810
 811
 812
 813
 814
 815
 816
 817
 818
 819
 820
 821
 822
 823
 824
 825
 826
 827
 828
 829
 830
 831
 832
 833
 834
 835
 836
 837
 838
 839
 840
 841
 842
 843
 844
 845
 846
 847
 848
 849
 850
 851
 852
 853
 854
 855
 856
 857
 858
 859
 860
 861
 862
 863
 864
 865
 866
 867
 868
 869
 870
 871
 872
 873
 874
 875
 876
 877
 878
 879
 880
 881
 882
 883
 884
 885
 886
 887
 888
 889
 890
 891
 892
 893
 894
 895
 896
 897
 898
 899
 900
 901
 902
 903
 904
 905
 906
 907
 908
 909
 910
 911
 912
 913
 914
 915
 916
 917
 918
 919
 920
 921
 922
 923
 924
 925
 926
 927
 928
 929
 930
 931
 932
 933
 934
 935
 936
 937
 938
 939
 940
 941
 942
 943
 944
 945
 946
 947
 948
 949
 950
 951
 952
 953
 954
 955
 956
 957
 958
 959
 960
 961
 962
 963
 964
 965
 966
 967
 968
 969
 970
 971
 972
 973
 974
 975
 976
 977
 978
 979
 980
 981
 982
 983
 984
 985
 986
 987
 988
 989
 990
 991
 992
 993
 994
 995
 996
 997
 998
 999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
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
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
#ifndef _LINUX_NFS_XDR_H
#define _LINUX_NFS_XDR_H

#include <linux/nfsacl.h>
#include <linux/sunrpc/gss_api.h>

/*
 * To change the maximum rsize and wsize supported by the NFS client, adjust
 * NFS_MAX_FILE_IO_SIZE.  64KB is a typical maximum, but some servers can
 * support a megabyte or more.  The default is left at 4096 bytes, which is
 * reasonable for NFS over UDP.
 */
#define NFS_MAX_FILE_IO_SIZE	(1048576U)
#define NFS_DEF_FILE_IO_SIZE	(4096U)
#define NFS_MIN_FILE_IO_SIZE	(1024U)

struct nfs4_string {
	unsigned int len;
	char *data;
};

struct nfs_fsid {
	uint64_t		major;
	uint64_t		minor;
};

/*
 * Helper for checking equality between 2 fsids.
 */
static inline int nfs_fsid_equal(const struct nfs_fsid *a, const struct nfs_fsid *b)
{
	return a->major == b->major && a->minor == b->minor;
}

struct nfs4_threshold {
	__u32	bm;
	__u32	l_type;
	__u64	rd_sz;
	__u64	wr_sz;
	__u64	rd_io_sz;
	__u64	wr_io_sz;
};

struct nfs_fattr {
	unsigned int		valid;		/* which fields are valid */
	umode_t			mode;
	__u32			nlink;
	kuid_t			uid;
	kgid_t			gid;
	dev_t			rdev;
	__u64			size;
	union {
		struct {
			__u32	blocksize;
			__u32	blocks;
		} nfs2;
		struct {
			__u64	used;
		} nfs3;
	} du;
	struct nfs_fsid		fsid;
	__u64			fileid;
	__u64			mounted_on_fileid;
	struct timespec		atime;
	struct timespec		mtime;
	struct timespec		ctime;
	__u64			change_attr;	/* NFSv4 change attribute */
	__u64			pre_change_attr;/* pre-op NFSv4 change attribute */
	__u64			pre_size;	/* pre_op_attr.size	  */
	struct timespec		pre_mtime;	/* pre_op_attr.mtime	  */
	struct timespec		pre_ctime;	/* pre_op_attr.ctime	  */
	unsigned long		time_start;
	unsigned long		gencount;
	struct nfs4_string	*owner_name;
	struct nfs4_string	*group_name;
	struct nfs4_threshold	*mdsthreshold;	/* pNFS threshold hints */
};

#define NFS_ATTR_FATTR_TYPE		(1U << 0)
#define NFS_ATTR_FATTR_MODE		(1U << 1)
#define NFS_ATTR_FATTR_NLINK		(1U << 2)
#define NFS_ATTR_FATTR_OWNER		(1U << 3)
#define NFS_ATTR_FATTR_GROUP		(1U << 4)
#define NFS_ATTR_FATTR_RDEV		(1U << 5)
#define NFS_ATTR_FATTR_SIZE		(1U << 6)
#define NFS_ATTR_FATTR_PRESIZE		(1U << 7)
#define NFS_ATTR_FATTR_BLOCKS_USED	(1U << 8)
#define NFS_ATTR_FATTR_SPACE_USED	(1U << 9)
#define NFS_ATTR_FATTR_FSID		(1U << 10)
#define NFS_ATTR_FATTR_FILEID		(1U << 11)
#define NFS_ATTR_FATTR_ATIME		(1U << 12)
#define NFS_ATTR_FATTR_MTIME		(1U << 13)
#define NFS_ATTR_FATTR_CTIME		(1U << 14)
#define NFS_ATTR_FATTR_PREMTIME		(1U << 15)
#define NFS_ATTR_FATTR_PRECTIME		(1U << 16)
#define NFS_ATTR_FATTR_CHANGE		(1U << 17)
#define NFS_ATTR_FATTR_PRECHANGE	(1U << 18)
#define NFS_ATTR_FATTR_V4_LOCATIONS	(1U << 19)
#define NFS_ATTR_FATTR_V4_REFERRAL	(1U << 20)
#define NFS_ATTR_FATTR_MOUNTPOINT	(1U << 21)
#define NFS_ATTR_FATTR_MOUNTED_ON_FILEID (1U << 22)
#define NFS_ATTR_FATTR_OWNER_NAME	(1U << 23)
#define NFS_ATTR_FATTR_GROUP_NAME	(1U << 24)
#define NFS_ATTR_FATTR_V4_SECURITY_LABEL (1U << 25)

#define NFS_ATTR_FATTR (NFS_ATTR_FATTR_TYPE \
		| NFS_ATTR_FATTR_MODE \
		| NFS_ATTR_FATTR_NLINK \
		| NFS_ATTR_FATTR_OWNER \
		| NFS_ATTR_FATTR_GROUP \
		| NFS_ATTR_FATTR_RDEV \
		| NFS_ATTR_FATTR_SIZE \
		| NFS_ATTR_FATTR_FSID \
		| NFS_ATTR_FATTR_FILEID \
		| NFS_ATTR_FATTR_ATIME \
		| NFS_ATTR_FATTR_MTIME \
		| NFS_ATTR_FATTR_CTIME \
		| NFS_ATTR_FATTR_CHANGE)
#define NFS_ATTR_FATTR_V2 (NFS_ATTR_FATTR \
		| NFS_ATTR_FATTR_BLOCKS_USED)
#define NFS_ATTR_FATTR_V3 (NFS_ATTR_FATTR \
		| NFS_ATTR_FATTR_SPACE_USED)
#define NFS_ATTR_FATTR_V4 (NFS_ATTR_FATTR \
		| NFS_ATTR_FATTR_SPACE_USED \
		| NFS_ATTR_FATTR_V4_SECURITY_LABEL)

/*
 * Maximal number of supported layout drivers.
 */
#define NFS_MAX_LAYOUT_TYPES 8

/*
 * Info on the file system
 */
struct nfs_fsinfo {
	struct nfs_fattr	*fattr; /* Post-op attributes */
	__u32			rtmax;	/* max.  read transfer size */
	__u32			rtpref;	/* pref. read transfer size */
	__u32			rtmult;	/* reads should be multiple of this */
	__u32			wtmax;	/* max.  write transfer size */
	__u32			wtpref;	/* pref. write transfer size */
	__u32			wtmult;	/* writes should be multiple of this */
	__u32			dtpref;	/* pref. readdir transfer size */
	__u64			maxfilesize;
	struct timespec		time_delta; /* server time granularity */
	__u32			lease_time; /* in seconds */
	__u32			nlayouttypes; /* number of layouttypes */
	__u32			layouttype[NFS_MAX_LAYOUT_TYPES]; /* supported pnfs layout driver */
	__u32			blksize; /* preferred pnfs io block size */
	__u32			clone_blksize; /* granularity of a CLONE operation */
};

struct nfs_fsstat {
	struct nfs_fattr	*fattr; /* Post-op attributes */
	__u64			tbytes;	/* total size in bytes */
	__u64			fbytes;	/* # of free bytes */
	__u64			abytes;	/* # of bytes available to user */
	__u64			tfiles;	/* # of files */
	__u64			ffiles;	/* # of free files */
	__u64			afiles;	/* # of files available to user */
};

struct nfs2_fsstat {
	__u32			tsize;  /* Server transfer size */
	__u32			bsize;  /* Filesystem block size */
	__u32			blocks; /* No. of "bsize" blocks on filesystem */
	__u32			bfree;  /* No. of free "bsize" blocks */
	__u32			bavail; /* No. of available "bsize" blocks */
};

struct nfs_pathconf {
	struct nfs_fattr	*fattr; /* Post-op attributes */
	__u32			max_link; /* max # of hard links */
	__u32			max_namelen; /* max name length */
};

struct nfs4_change_info {
	u32			atomic;
	u64			before;
	u64			after;
};

struct nfs_seqid;

/* nfs41 sessions channel attributes */
struct nfs4_channel_attrs {
	u32			max_rqst_sz;
	u32			max_resp_sz;
	u32			max_resp_sz_cached;
	u32			max_ops;
	u32			max_reqs;
};

struct nfs4_slot;
struct nfs4_sequence_args {
	struct nfs4_slot	*sa_slot;
	u8			sa_cache_this : 1,
				sa_privileged : 1;
};

struct nfs4_sequence_res {
	struct nfs4_slot	*sr_slot;	/* slot used to send request */
	unsigned long		sr_timestamp;
	int			sr_status;	/* sequence operation status */
	u32			sr_status_flags;
	u32			sr_highest_slotid;
	u32			sr_target_highest_slotid;
};

struct nfs4_get_lease_time_args {
	struct nfs4_sequence_args	la_seq_args;
};

struct nfs4_get_lease_time_res {
	struct nfs4_sequence_res	lr_seq_res;
	struct nfs_fsinfo	       *lr_fsinfo;
};

#define PNFS_LAYOUT_MAXSIZE 4096

struct nfs4_layoutdriver_data {
	struct page **pages;
	__u32 pglen;
	__u32 len;
};

struct pnfs_layout_range {
	u32 iomode;
	u64 offset;
	u64 length;
};

struct nfs4_layoutget_args {
	struct nfs4_sequence_args seq_args;
	__u32 type;
	struct pnfs_layout_range range;
	__u64 minlength;
	__u32 maxcount;
	struct inode *inode;
	struct nfs_open_context *ctx;
	nfs4_stateid stateid;
	struct nfs4_layoutdriver_data layout;
};

struct nfs4_layoutget_res {
	struct nfs4_sequence_res seq_res;
	__u32 return_on_close;
	struct pnfs_layout_range range;
	__u32 type;
	nfs4_stateid stateid;
	struct nfs4_layoutdriver_data *layoutp;
};

struct nfs4_layoutget {
	struct nfs4_layoutget_args args;
	struct nfs4_layoutget_res res;
	struct rpc_cred *cred;
	gfp_t gfp_flags;
};

struct nfs4_getdeviceinfo_args {
	struct nfs4_sequence_args seq_args;
	struct pnfs_device *pdev;
	__u32 notify_types;
};

struct nfs4_getdeviceinfo_res {
	struct nfs4_sequence_res seq_res;
	struct pnfs_device *pdev;
	__u32 notification;
};

struct nfs4_layoutcommit_args {
	struct nfs4_sequence_args seq_args;
	nfs4_stateid stateid;
	__u64 lastbytewritten;
	struct inode *inode;
	const u32 *bitmask;
	size_t layoutupdate_len;
	struct page *layoutupdate_page;
	struct page **layoutupdate_pages;
	__be32 *start_p;
};

struct nfs4_layoutcommit_res {
	struct nfs4_sequence_res seq_res;
	struct nfs_fattr *fattr;
	const struct nfs_server *server;
	int status;
};

struct nfs4_layoutcommit_data {
	struct rpc_task task;
	struct nfs_fattr fattr;
	struct list_head lseg_list;
	struct rpc_cred *cred;
	struct inode *inode;
	struct nfs4_layoutcommit_args args;
	struct nfs4_layoutcommit_res res;
};

struct nfs4_layoutreturn_args {
	struct nfs4_sequence_args seq_args;
	struct pnfs_layout_hdr *layout;
	struct inode *inode;
	struct pnfs_layout_range range;
	nfs4_stateid stateid;
	__u32   layout_type;
};

struct nfs4_layoutreturn_res {
	struct nfs4_sequence_res seq_res;
	u32 lrs_present;
	nfs4_stateid stateid;
};

struct nfs4_layoutreturn {
	struct nfs4_layoutreturn_args args;
	struct nfs4_layoutreturn_res res;
	struct rpc_cred *cred;
	struct nfs_client *clp;
	struct inode *inode;
	int rpc_status;
};

#define PNFS_LAYOUTSTATS_MAXSIZE 256

struct nfs42_layoutstat_args;
struct nfs42_layoutstat_devinfo;
typedef	void (*layoutstats_encode_t)(struct xdr_stream *,
		struct nfs42_layoutstat_args *,
		struct nfs42_layoutstat_devinfo *);

/* Per file per deviceid layoutstats */
struct nfs42_layoutstat_devinfo {
	struct nfs4_deviceid dev_id;
	__u64 offset;
	__u64 length;
	__u64 read_count;
	__u64 read_bytes;
	__u64 write_count;
	__u64 write_bytes;
	__u32 layout_type;
	layoutstats_encode_t layoutstats_encode;
	void *layout_private;
};

struct nfs42_layoutstat_args {
	struct nfs4_sequence_args seq_args;
	struct nfs_fh *fh;
	struct inode *inode;
	nfs4_stateid stateid;
	int num_dev;
	struct nfs42_layoutstat_devinfo *devinfo;
};

struct nfs42_layoutstat_res {
	struct nfs4_sequence_res seq_res;
	int num_dev;
	int rpc_status;
};

struct nfs42_layoutstat_data {
	struct inode *inode;
	struct nfs42_layoutstat_args args;
	struct nfs42_layoutstat_res res;
};

struct nfs42_clone_args {
	struct nfs4_sequence_args	seq_args;
	struct nfs_fh			*src_fh;
	struct nfs_fh			*dst_fh;
	nfs4_stateid			src_stateid;
	nfs4_stateid			dst_stateid;
	__u64				src_offset;
	__u64				dst_offset;
	__u64				count;
	const u32			*dst_bitmask;
};

struct nfs42_clone_res {
	struct nfs4_sequence_res	seq_res;
	unsigned int			rpc_status;
	struct nfs_fattr		*dst_fattr;
	const struct nfs_server		*server;
};

struct stateowner_id {
	__u64	create_time;
	__u32	uniquifier;
};

/*
 * Arguments to the open call.
 */
struct nfs_openargs {
	struct nfs4_sequence_args	seq_args;
	const struct nfs_fh *	fh;
	struct nfs_seqid *	seqid;
	int			open_flags;
	fmode_t			fmode;
	u32			share_access;
	u32			access;
	__u64                   clientid;
	struct stateowner_id	id;
	union {
		struct {
			struct iattr *  attrs;    /* UNCHECKED, GUARDED, EXCLUSIVE4_1 */
			nfs4_verifier   verifier; /* EXCLUSIVE */
		};
		nfs4_stateid	delegation;		/* CLAIM_DELEGATE_CUR */
		fmode_t		delegation_type;	/* CLAIM_PREVIOUS */
	} u;
	const struct qstr *	name;
	const struct nfs_server *server;	 /* Needed for ID mapping */
	const u32 *		bitmask;
	const u32 *		open_bitmap;
	enum open_claim_type4	claim;
	enum createmode4	createmode;
	const struct nfs4_label *label;
};

struct nfs_openres {
	struct nfs4_sequence_res	seq_res;
	nfs4_stateid            stateid;
	struct nfs_fh           fh;
	struct nfs4_change_info	cinfo;
	__u32                   rflags;
	struct nfs_fattr *      f_attr;
	struct nfs4_label	*f_label;
	struct nfs_seqid *	seqid;
	const struct nfs_server *server;
	fmode_t			delegation_type;
	nfs4_stateid		delegation;
	unsigned long		pagemod_limit;
	__u32			do_recall;
	__u32			attrset[NFS4_BITMAP_SIZE];
	struct nfs4_string	*owner;
	struct nfs4_string	*group_owner;
	__u32			access_request;
	__u32			access_supported;
	__u32			access_result;
};

/*
 * Arguments to the open_confirm call.
 */
struct nfs_open_confirmargs {
	struct nfs4_sequence_args	seq_args;
	const struct nfs_fh *	fh;
	nfs4_stateid *		stateid;
	struct nfs_seqid *	seqid;
};

struct nfs_open_confirmres {
	struct nfs4_sequence_res	seq_res;
	nfs4_stateid            stateid;
	struct nfs_seqid *	seqid;
};

/*
 * Arguments to the close call.
 */
struct nfs_closeargs {
	struct nfs4_sequence_args	seq_args;
	struct nfs_fh *         fh;
	nfs4_stateid 		stateid;
	struct nfs_seqid *	seqid;
	fmode_t			fmode;
	u32			share_access;
	const u32 *		bitmask;
};

struct nfs_closeres {
	struct nfs4_sequence_res	seq_res;
	nfs4_stateid            stateid;
	struct nfs_fattr *	fattr;
	struct nfs_seqid *	seqid;
	const struct nfs_server *server;
};
/*
 *  * Arguments to the lock,lockt, and locku call.
 *   */
struct nfs_lowner {
	__u64			clientid;
	__u64			id;
	dev_t			s_dev;
};

struct nfs_lock_args {
	struct nfs4_sequence_args	seq_args;
	struct nfs_fh *		fh;
	struct file_lock *	fl;
	struct nfs_seqid *	lock_seqid;
	nfs4_stateid		lock_stateid;
	struct nfs_seqid *	open_seqid;
	nfs4_stateid		open_stateid;
	struct nfs_lowner	lock_owner;
	unsigned char		block : 1;
	unsigned char		reclaim : 1;
	unsigned char		new_lock : 1;
	unsigned char		new_lock_owner : 1;
};

struct nfs_lock_res {
	struct nfs4_sequence_res	seq_res;
	nfs4_stateid		stateid;
	struct nfs_seqid *	lock_seqid;
	struct nfs_seqid *	open_seqid;
};

struct nfs_locku_args {
	struct nfs4_sequence_args	seq_args;
	struct nfs_fh *		fh;
	struct file_lock *	fl;
	struct nfs_seqid *	seqid;
	nfs4_stateid 		stateid;
};

struct nfs_locku_res {
	struct nfs4_sequence_res	seq_res;
	nfs4_stateid		stateid;
	struct nfs_seqid *	seqid;
};

struct nfs_lockt_args {
	struct nfs4_sequence_args	seq_args;
	struct nfs_fh *		fh;
	struct file_lock *	fl;
	struct nfs_lowner	lock_owner;
};

struct nfs_lockt_res {
	struct nfs4_sequence_res	seq_res;
	struct file_lock *	denied; /* LOCK, LOCKT failed */
};

struct nfs_release_lockowner_args {
	struct nfs4_sequence_args	seq_args;
	struct nfs_lowner	lock_owner;
};

struct nfs_release_lockowner_res {
	struct nfs4_sequence_res	seq_res;
};

struct nfs4_delegreturnargs {
	struct nfs4_sequence_args	seq_args;
	const struct nfs_fh *fhandle;
	const nfs4_stateid *stateid;
	const u32 * bitmask;
};

struct nfs4_delegreturnres {
	struct nfs4_sequence_res	seq_res;
	struct nfs_fattr * fattr;
	struct nfs_server *server;
};

/*
 * Arguments to the write call.
 */
struct nfs_write_verifier {
	char			data[8];
};

struct nfs_writeverf {
	struct nfs_write_verifier verifier;
	enum nfs3_stable_how	committed;
};

/*
 * Arguments shared by the read and write call.
 */
struct nfs_pgio_args {
	struct nfs4_sequence_args	seq_args;
	struct nfs_fh *		fh;
	struct nfs_open_context *context;
	struct nfs_lock_context *lock_context;
	nfs4_stateid		stateid;
	__u64			offset;
	__u32			count;
	unsigned int		pgbase;
	struct page **		pages;
	const u32 *		bitmask;	/* used by write */
	enum nfs3_stable_how	stable;		/* used by write */
};

struct nfs_pgio_res {
	struct nfs4_sequence_res	seq_res;
	struct nfs_fattr *	fattr;
	__u32			count;
	__u32			op_status;
	int			eof;		/* used by read */
	struct nfs_writeverf *	verf;		/* used by write */
	const struct nfs_server *server;	/* used by write */

};

/*
 * Arguments to the commit call.
 */
struct nfs_commitargs {
	struct nfs4_sequence_args	seq_args;
	struct nfs_fh		*fh;
	__u64			offset;
	__u32			count;
	const u32		*bitmask;
};

struct nfs_commitres {
	struct nfs4_sequence_res	seq_res;
	__u32			op_status;
	struct nfs_fattr	*fattr;
	struct nfs_writeverf	*verf;
	const struct nfs_server *server;
};

/*
 * Common arguments to the unlink call
 */
struct nfs_removeargs {
	struct nfs4_sequence_args	seq_args;
	const struct nfs_fh	*fh;
	struct qstr		name;
};

struct nfs_removeres {
	struct nfs4_sequence_res 	seq_res;
	struct nfs_server *server;
	struct nfs_fattr	*dir_attr;
	struct nfs4_change_info	cinfo;
};

/*
 * Common arguments to the rename call
 */
struct nfs_renameargs {
	struct nfs4_sequence_args	seq_args;
	const struct nfs_fh		*old_dir;
	const struct nfs_fh		*new_dir;
	const struct qstr		*old_name;
	const struct qstr		*new_name;
};

struct nfs_renameres {
	struct nfs4_sequence_res	seq_res;
	struct nfs_server		*server;
	struct nfs4_change_info		old_cinfo;
	struct nfs_fattr		*old_fattr;
	struct nfs4_change_info		new_cinfo;
	struct nfs_fattr		*new_fattr;
};

/* parsed sec= options */
#define NFS_AUTH_INFO_MAX_FLAVORS 12 /* see fs/nfs/super.c */
struct nfs_auth_info {
	unsigned int            flavor_len;
	rpc_authflavor_t        flavors[NFS_AUTH_INFO_MAX_FLAVORS];
};

/*
 * Argument struct for decode_entry function
 */
struct nfs_entry {
	__u64			ino;
	__u64			cookie,
				prev_cookie;
	const char *		name;
	unsigned int		len;
	int			eof;
	struct nfs_fh *		fh;
	struct nfs_fattr *	fattr;
	struct nfs4_label  *label;
	unsigned char		d_type;
	struct nfs_server *	server;
};

/*
 * The following types are for NFSv2 only.
 */
struct nfs_sattrargs {
	struct nfs_fh *		fh;
	struct iattr *		sattr;
};

struct nfs_diropargs {
	struct nfs_fh *		fh;
	const char *		name;
	unsigned int		len;
};

struct nfs_createargs {
	struct nfs_fh *		fh;
	const char *		name;
	unsigned int		len;
	struct iattr *		sattr;
};

struct nfs_setattrargs {
	struct nfs4_sequence_args 	seq_args;
	struct nfs_fh *                 fh;
	nfs4_stateid                    stateid;
	struct iattr *                  iap;
	const struct nfs_server *	server; /* Needed for name mapping */
	const u32 *			bitmask;
	const struct nfs4_label		*label;
};

struct nfs_setaclargs {
	struct nfs4_sequence_args	seq_args;
	struct nfs_fh *			fh;
	size_t				acl_len;
	struct page **			acl_pages;
};

struct nfs_setaclres {
	struct nfs4_sequence_res	seq_res;
};

struct nfs_getaclargs {
	struct nfs4_sequence_args 	seq_args;
	struct nfs_fh *			fh;
	size_t				acl_len;
	struct page **			acl_pages;
};

/* getxattr ACL interface flags */
#define NFS4_ACL_TRUNC		0x0001	/* ACL was truncated */
struct nfs_getaclres {
	struct nfs4_sequence_res	seq_res;
	size_t				acl_len;
	size_t				acl_data_offset;
	int				acl_flags;
	struct page *			acl_scratch;
};

struct nfs_setattrres {
	struct nfs4_sequence_res	seq_res;
	struct nfs_fattr *              fattr;
	struct nfs4_label		*label;
	const struct nfs_server *	server;
};

struct nfs_linkargs {
	struct nfs_fh *		fromfh;
	struct nfs_fh *		tofh;
	const char *		toname;
	unsigned int		tolen;
};

struct nfs_symlinkargs {
	struct nfs_fh *		fromfh;
	const char *		fromname;
	unsigned int		fromlen;
	struct page **		pages;
	unsigned int		pathlen;
	struct iattr *		sattr;
};

struct nfs_readdirargs {
	struct nfs_fh *		fh;
	__u32			cookie;
	unsigned int		count;
	struct page **		pages;
};

struct nfs3_getaclargs {
	struct nfs_fh *		fh;
	int			mask;
	struct page **		pages;
};

struct nfs3_setaclargs {
	struct inode *		inode;
	int			mask;
	struct posix_acl *	acl_access;
	struct posix_acl *	acl_default;
	size_t			len;
	unsigned int		npages;
	struct page **		pages;
};

struct nfs_diropok {
	struct nfs_fh *		fh;
	struct nfs_fattr *	fattr;
};

struct nfs_readlinkargs {
	struct nfs_fh *		fh;
	unsigned int		pgbase;
	unsigned int		pglen;
	struct page **		pages;
};

struct nfs3_sattrargs {
	struct nfs_fh *		fh;
	struct iattr *		sattr;
	unsigned int		guard;
	struct timespec		guardtime;
};

struct nfs3_diropargs {
	struct nfs_fh *		fh;
	const char *		name;
	unsigned int		len;
};

struct nfs3_accessargs {
	struct nfs_fh *		fh;
	__u32			access;
};

struct nfs3_createargs {
	struct nfs_fh *		fh;
	const char *		name;
	unsigned int		len;
	struct iattr *		sattr;
	enum nfs3_createmode	createmode;
	__be32			verifier[2];
};

struct nfs3_mkdirargs {
	struct nfs_fh *		fh;
	const char *		name;
	unsigned int		len;
	struct iattr *		sattr;
};

struct nfs3_symlinkargs {
	struct nfs_fh *		fromfh;
	const char *		fromname;
	unsigned int		fromlen;
	struct page **		pages;
	unsigned int		pathlen;
	struct iattr *		sattr;
};

struct nfs3_mknodargs {
	struct nfs_fh *		fh;
	const char *		name;
	unsigned int		len;
	enum nfs3_ftype		type;
	struct iattr *		sattr;
	dev_t			rdev;
};

struct nfs3_linkargs {
	struct nfs_fh *		fromfh;
	struct nfs_fh *		tofh;
	const char *		toname;
	unsigned int		tolen;
};

struct nfs3_readdirargs {
	struct nfs_fh *		fh;
	__u64			cookie;
	__be32			verf[2];
	int			plus;
	unsigned int            count;
	struct page **		pages;
};

struct nfs3_diropres {
	struct nfs_fattr *	dir_attr;
	struct nfs_fh *		fh;
	struct nfs_fattr *	fattr;
};

struct nfs3_accessres {
	struct nfs_fattr *	fattr;
	__u32			access;
};

struct nfs3_readlinkargs {
	struct nfs_fh *		fh;
	unsigned int		pgbase;
	unsigned int		pglen;
	struct page **		pages;
};

struct nfs3_linkres {
	struct nfs_fattr *	dir_attr;
	struct nfs_fattr *	fattr;
};

struct nfs3_readdirres {
	struct nfs_fattr *	dir_attr;
	__be32 *		verf;
	int			plus;
};

struct nfs3_getaclres {
	struct nfs_fattr *	fattr;
	int			mask;
	unsigned int		acl_access_count;
	unsigned int		acl_default_count;
	struct posix_acl *	acl_access;
	struct posix_acl *	acl_default;
};

#if IS_ENABLED(CONFIG_NFS_V4)

typedef u64 clientid4;

struct nfs4_accessargs {
	struct nfs4_sequence_args	seq_args;
	const struct nfs_fh *		fh;
	const u32 *			bitmask;
	u32				access;
};

struct nfs4_accessres {
	struct nfs4_sequence_res	seq_res;
	const struct nfs_server *	server;
	struct nfs_fattr *		fattr;
	u32				supported;
	u32				access;
};

struct nfs4_create_arg {
	struct nfs4_sequence_args 	seq_args;
	u32				ftype;
	union {
		struct {
			struct page **	pages;
			unsigned int	len;
		} symlink;   /* NF4LNK */
		struct {
			u32		specdata1;
			u32		specdata2;
		} device;    /* NF4BLK, NF4CHR */
	} u;
	const struct qstr *		name;
	const struct nfs_server *	server;
	const struct iattr *		attrs;
	const struct nfs_fh *		dir_fh;
	const u32 *			bitmask;
	const struct nfs4_label		*label;
};

struct nfs4_create_res {
	struct nfs4_sequence_res	seq_res;
	const struct nfs_server *	server;
	struct nfs_fh *			fh;
	struct nfs_fattr *		fattr;
	struct nfs4_label		*label;
	struct nfs4_change_info		dir_cinfo;
};

struct nfs4_fsinfo_arg {
	struct nfs4_sequence_args	seq_args;
	const struct nfs_fh *		fh;
	const u32 *			bitmask;
};

struct nfs4_fsinfo_res {
	struct nfs4_sequence_res	seq_res;
	struct nfs_fsinfo	       *fsinfo;
};

struct nfs4_getattr_arg {
	struct nfs4_sequence_args	seq_args;
	const struct nfs_fh *		fh;
	const u32 *			bitmask;
};

struct nfs4_getattr_res {
	struct nfs4_sequence_res	seq_res;
	const struct nfs_server *	server;
	struct nfs_fattr *		fattr;
	struct nfs4_label		*label;
};

struct nfs4_link_arg {
	struct nfs4_sequence_args 	seq_args;
	const struct nfs_fh *		fh;
	const struct nfs_fh *		dir_fh;
	const struct qstr *		name;
	const u32 *			bitmask;
};

struct nfs4_link_res {
	struct nfs4_sequence_res	seq_res;
	const struct nfs_server *	server;
	struct nfs_fattr *		fattr;
	struct nfs4_label		*label;
	struct nfs4_change_info		cinfo;
	struct nfs_fattr *		dir_attr;
};


struct nfs4_lookup_arg {
	struct nfs4_sequence_args	seq_args;
	const struct nfs_fh *		dir_fh;
	const struct qstr *		name;
	const u32 *			bitmask;
};

struct nfs4_lookup_res {
	struct nfs4_sequence_res	seq_res;
	const struct nfs_server *	server;
	struct nfs_fattr *		fattr;
	struct nfs_fh *			fh;
	struct nfs4_label		*label;
};

struct nfs4_lookup_root_arg {
	struct nfs4_sequence_args	seq_args;
	const u32 *			bitmask;
};

struct nfs4_pathconf_arg {
	struct nfs4_sequence_args	seq_args;
	const struct nfs_fh *		fh;
	const u32 *			bitmask;
};

struct nfs4_pathconf_res {
	struct nfs4_sequence_res	seq_res;
	struct nfs_pathconf	       *pathconf;
};

struct nfs4_readdir_arg {
	struct nfs4_sequence_args	seq_args;
	const struct nfs_fh *		fh;
	u64				cookie;
	nfs4_verifier			verifier;
	u32				count;
	struct page **			pages;	/* zero-copy data */
	unsigned int			pgbase;	/* zero-copy data */
	const u32 *			bitmask;
	int				plus;
};

struct nfs4_readdir_res {
	struct nfs4_sequence_res	seq_res;
	nfs4_verifier			verifier;
	unsigned int			pgbase;
};

struct nfs4_readlink {
	struct nfs4_sequence_args	seq_args;
	const struct nfs_fh *		fh;
	unsigned int			pgbase;
	unsigned int			pglen;   /* zero-copy data */
	struct page **			pages;   /* zero-copy data */
};

struct nfs4_readlink_res {
	struct nfs4_sequence_res	seq_res;
};

struct nfs4_setclientid {
	const nfs4_verifier *		sc_verifier;
	u32				sc_prog;
	unsigned int			sc_netid_len;
	char				sc_netid[RPCBIND_MAXNETIDLEN + 1];
	unsigned int			sc_uaddr_len;
	char				sc_uaddr[RPCBIND_MAXUADDRLEN + 1];
	struct nfs_client		*sc_clnt;
	struct rpc_cred			*sc_cred;
};

struct nfs4_setclientid_res {
	u64				clientid;
	nfs4_verifier			confirm;
};

struct nfs4_statfs_arg {
	struct nfs4_sequence_args	seq_args;
	const struct nfs_fh *		fh;
	const u32 *			bitmask;
};

struct nfs4_statfs_res {
	struct nfs4_sequence_res	seq_res;
	struct nfs_fsstat	       *fsstat;
};

struct nfs4_server_caps_arg {
	struct nfs4_sequence_args	seq_args;
	struct nfs_fh		       *fhandle;
	const u32 *			bitmask;
};

struct nfs4_server_caps_res {
	struct nfs4_sequence_res	seq_res;
	u32				attr_bitmask[3];
	u32				exclcreat_bitmask[3];
	u32				acl_bitmask;
	u32				has_links;
	u32				has_symlinks;
	u32				fh_expire_type;
};

#define NFS4_PATHNAME_MAXCOMPONENTS 512
struct nfs4_pathname {
	unsigned int ncomponents;
	struct nfs4_string components[NFS4_PATHNAME_MAXCOMPONENTS];
};

#define NFS4_FS_LOCATION_MAXSERVERS 10
struct nfs4_fs_location {
	unsigned int nservers;
	struct nfs4_string servers[NFS4_FS_LOCATION_MAXSERVERS];
	struct nfs4_pathname rootpath;
};

#define NFS4_FS_LOCATIONS_MAXENTRIES 10
struct nfs4_fs_locations {
	struct nfs_fattr fattr;
	const struct nfs_server *server;
	struct nfs4_pathname fs_path;
	int nlocations;
	struct nfs4_fs_location locations[NFS4_FS_LOCATIONS_MAXENTRIES];
};

struct nfs4_fs_locations_arg {
	struct nfs4_sequence_args	seq_args;
	const struct nfs_fh *dir_fh;
	const struct nfs_fh *fh;
	const struct qstr *name;
	struct page *page;
	const u32 *bitmask;
	clientid4 clientid;
	unsigned char migration:1, renew:1;
};

struct nfs4_fs_locations_res {
	struct nfs4_sequence_res	seq_res;
	struct nfs4_fs_locations       *fs_locations;
	unsigned char			migration:1, renew:1;
};

struct nfs4_secinfo4 {
	u32			flavor;
	struct rpcsec_gss_info	flavor_info;
};

struct nfs4_secinfo_flavors {
	unsigned int		num_flavors;
	struct nfs4_secinfo4	flavors[0];
};

struct nfs4_secinfo_arg {
	struct nfs4_sequence_args	seq_args;
	const struct nfs_fh		*dir_fh;
	const struct qstr		*name;
};

struct nfs4_secinfo_res {
	struct nfs4_sequence_res	seq_res;
	struct nfs4_secinfo_flavors	*flavors;
};

struct nfs4_fsid_present_arg {
	struct nfs4_sequence_args	seq_args;
	const struct nfs_fh		*fh;
	clientid4			clientid;
	unsigned char			renew:1;
};

struct nfs4_fsid_present_res {
	struct nfs4_sequence_res	seq_res;
	struct nfs_fh			*fh;
	unsigned char			renew:1;
};

#endif /* CONFIG_NFS_V4 */

struct nfstime4 {
	u64	seconds;
	u32	nseconds;
};

#ifdef CONFIG_NFS_V4_1

struct pnfs_commit_bucket {
	struct list_head written;
	struct list_head committing;
	struct pnfs_layout_segment *wlseg;
	struct pnfs_layout_segment *clseg;
	struct nfs_writeverf direct_verf;
};

struct pnfs_ds_commit_info {
	int nwritten;
	int ncommitting;
	int nbuckets;
	struct pnfs_commit_bucket *buckets;
};

struct nfs41_state_protection {
	u32 how;
	struct nfs4_op_map enforce;
	struct nfs4_op_map allow;
};

struct nfs41_exchange_id_args {
	struct nfs_client		*client;
	nfs4_verifier			verifier;
	u32				flags;
	struct nfs41_state_protection	state_protect;
};

struct nfs41_server_owner {
	uint64_t			minor_id;
	uint32_t			major_id_sz;
	char				major_id[NFS4_OPAQUE_LIMIT];
};

struct nfs41_server_scope {
	uint32_t			server_scope_sz;
	char 				server_scope[NFS4_OPAQUE_LIMIT];
};

struct nfs41_impl_id {
	char				domain[NFS4_OPAQUE_LIMIT + 1];
	char				name[NFS4_OPAQUE_LIMIT + 1];
	struct nfstime4			date;
};

struct nfs41_bind_conn_to_session_args {
	struct nfs_client		*client;
	struct nfs4_sessionid		sessionid;
	u32				dir;
	bool				use_conn_in_rdma_mode;
};

struct nfs41_bind_conn_to_session_res {
	struct nfs4_sessionid		sessionid;
	u32				dir;
	bool				use_conn_in_rdma_mode;
};

struct nfs41_exchange_id_res {
	u64				clientid;
	u32				seqid;
	u32				flags;
	struct nfs41_server_owner	*server_owner;
	struct nfs41_server_scope	*server_scope;
	struct nfs41_impl_id		*impl_id;
	struct nfs41_state_protection	state_protect;
};

struct nfs41_create_session_args {
	struct nfs_client	       *client;
	u64				clientid;
	uint32_t			seqid;
	uint32_t			flags;
	uint32_t			cb_program;
	struct nfs4_channel_attrs	fc_attrs;	/* Fore Channel */
	struct nfs4_channel_attrs	bc_attrs;	/* Back Channel */
};

struct nfs41_create_session_res {
	struct nfs4_sessionid		sessionid;
	uint32_t			seqid;
	uint32_t			flags;
	struct nfs4_channel_attrs	fc_attrs;	/* Fore Channel */
	struct nfs4_channel_attrs	bc_attrs;	/* Back Channel */
};

struct nfs41_reclaim_complete_args {
	struct nfs4_sequence_args	seq_args;
	/* In the future extend to include curr_fh for use with migration */
	unsigned char			one_fs:1;
};

struct nfs41_reclaim_complete_res {
	struct nfs4_sequence_res	seq_res;
};

#define SECINFO_STYLE_CURRENT_FH 0
#define SECINFO_STYLE_PARENT 1
struct nfs41_secinfo_no_name_args {
	struct nfs4_sequence_args	seq_args;
	int				style;
};

struct nfs41_test_stateid_args {
	struct nfs4_sequence_args	seq_args;
	nfs4_stateid			*stateid;
};

struct nfs41_test_stateid_res {
	struct nfs4_sequence_res	seq_res;
	unsigned int			status;
};

struct nfs41_free_stateid_args {
	struct nfs4_sequence_args	seq_args;
	nfs4_stateid			stateid;
};

struct nfs41_free_stateid_res {
	struct nfs4_sequence_res	seq_res;
	unsigned int			status;
};

static inline void
nfs_free_pnfs_ds_cinfo(struct pnfs_ds_commit_info *cinfo)
{
	kfree(cinfo->buckets);
}

#else

struct pnfs_ds_commit_info {
};

static inline void
nfs_free_pnfs_ds_cinfo(struct pnfs_ds_commit_info *cinfo)
{
}

#endif /* CONFIG_NFS_V4_1 */

#ifdef CONFIG_NFS_V4_2
struct nfs42_falloc_args {
	struct nfs4_sequence_args	seq_args;

	struct nfs_fh			*falloc_fh;
	nfs4_stateid			 falloc_stateid;
	u64				 falloc_offset;
	u64				 falloc_length;
	const u32			*falloc_bitmask;
};

struct nfs42_falloc_res {
	struct nfs4_sequence_res	seq_res;
	unsigned int			status;

	struct nfs_fattr		*falloc_fattr;
	const struct nfs_server		*falloc_server;
};

struct nfs42_copy_args {
	struct nfs4_sequence_args	seq_args;

	struct nfs_fh			*src_fh;
	nfs4_stateid			src_stateid;
	u64				src_pos;

	struct nfs_fh			*dst_fh;
	nfs4_stateid			dst_stateid;
	u64				dst_pos;

	u64				count;
};

struct nfs42_write_res {
	u64			count;
	struct nfs_writeverf	verifier;
};

struct nfs42_copy_res {
	struct nfs4_sequence_res	seq_res;
	struct nfs42_write_res		write_res;
	bool				consecutive;
	bool				synchronous;
};

struct nfs42_seek_args {
	struct nfs4_sequence_args	seq_args;

	struct nfs_fh			*sa_fh;
	nfs4_stateid			sa_stateid;
	u64				sa_offset;
	u32				sa_what;
};

struct nfs42_seek_res {
	struct nfs4_sequence_res	seq_res;
	unsigned int			status;

	u32	sr_eof;
	u64	sr_offset;
};
#endif

struct nfs_page;

#define NFS_PAGEVEC_SIZE	(8U)

struct nfs_page_array {
	struct page		**pagevec;
	unsigned int		npages;		/* Max length of pagevec */
	struct page		*page_array[NFS_PAGEVEC_SIZE];
};

/* used as flag bits in nfs_pgio_header */
enum {
	NFS_IOHDR_ERROR = 0,
	NFS_IOHDR_EOF,
	NFS_IOHDR_REDO,
	NFS_IOHDR_STAT,
};

struct nfs_pgio_header {
	struct inode		*inode;
	struct rpc_cred		*cred;
	struct list_head	pages;
	struct nfs_page		*req;
	struct nfs_writeverf	verf;		/* Used for writes */
	struct pnfs_layout_segment *lseg;
	loff_t			io_start;
	const struct rpc_call_ops *mds_ops;
	void (*release) (struct nfs_pgio_header *hdr);
	const struct nfs_pgio_completion_ops *completion_ops;
	const struct nfs_rw_ops	*rw_ops;
	struct nfs_direct_req	*dreq;
	void			*layout_private;
	spinlock_t		lock;
	/* fields protected by lock */
	int			pnfs_error;
	int			error;		/* merge with pnfs_error */
	unsigned long		good_bytes;	/* boundary of good data */
	unsigned long		flags;

	/*
	 * rpc data
	 */
	struct rpc_task		task;
	struct nfs_fattr	fattr;
	struct nfs_pgio_args	args;		/* argument struct */
	struct nfs_pgio_res	res;		/* result struct */
	unsigned long		timestamp;	/* For lease renewal */
	int (*pgio_done_cb)(struct rpc_task *, struct nfs_pgio_header *);
	__u64			mds_offset;	/* Filelayout dense stripe */
	struct nfs_page_array	page_array;
	struct nfs_client	*ds_clp;	/* pNFS data server */
	int			ds_commit_idx;	/* ds index if ds_clp is set */
	int			pgio_mirror_idx;/* mirror index in pgio layer */
};

struct nfs_mds_commit_info {
	atomic_t rpcs_out;
	unsigned long		ncommit;
	struct list_head	list;
};

struct nfs_commit_info;
struct nfs_commit_data;
struct nfs_inode;
struct nfs_commit_completion_ops {
	void (*completion) (struct nfs_commit_data *data);
	void (*resched_write) (struct nfs_commit_info *, struct nfs_page *);
};

struct nfs_commit_info {
	struct inode 			*inode;	/* Needed for inode->i_lock */
	struct nfs_mds_commit_info	*mds;
	struct pnfs_ds_commit_info	*ds;
	struct nfs_direct_req		*dreq;	/* O_DIRECT request */
	const struct nfs_commit_completion_ops *completion_ops;
};

struct nfs_commit_data {
	struct rpc_task		task;
	struct inode		*inode;
	struct rpc_cred		*cred;
	struct nfs_fattr	fattr;
	struct nfs_writeverf	verf;
	struct list_head	pages;		/* Coalesced requests we wish to flush */
	struct list_head	list;		/* lists of struct nfs_write_data */
	struct nfs_direct_req	*dreq;		/* O_DIRECT request */
	struct nfs_commitargs	args;		/* argument struct */
	struct nfs_commitres	res;		/* result struct */
	struct nfs_open_context *context;
	struct pnfs_layout_segment *lseg;
	struct nfs_client	*ds_clp;	/* pNFS data server */
	int			ds_commit_index;
	loff_t			lwb;
	const struct rpc_call_ops *mds_ops;
	const struct nfs_commit_completion_ops *completion_ops;
	int (*commit_done_cb) (struct rpc_task *task, struct nfs_commit_data *data);
	unsigned long		flags;
};

struct nfs_pgio_completion_ops {
	void	(*error_cleanup)(struct list_head *head);
	void	(*init_hdr)(struct nfs_pgio_header *hdr);
	void	(*completion)(struct nfs_pgio_header *hdr);
	void	(*reschedule_io)(struct nfs_pgio_header *hdr);
};

struct nfs_unlinkdata {
	struct nfs_removeargs args;
	struct nfs_removeres res;
	struct dentry *dentry;
	wait_queue_head_t wq;
	struct rpc_cred	*cred;
	struct nfs_fattr dir_attr;
	long timeout;
};

struct nfs_renamedata {
	struct nfs_renameargs	args;
	struct nfs_renameres	res;
	struct rpc_cred		*cred;
	struct inode		*old_dir;
	struct dentry		*old_dentry;
	struct nfs_fattr	old_fattr;
	struct inode		*new_dir;
	struct dentry		*new_dentry;
	struct nfs_fattr	new_fattr;
	void (*complete)(struct rpc_task *, struct nfs_renamedata *);
	long timeout;
};

struct nfs_access_entry;
struct nfs_client;
struct rpc_timeout;
struct nfs_subversion;
struct nfs_mount_info;
struct nfs_client_initdata;
struct nfs_pageio_descriptor;

/*
 * RPC procedure vector for NFSv2/NFSv3 demuxing
 */
struct nfs_rpc_ops {
	u32	version;		/* Protocol version */
	const struct dentry_operations *dentry_ops;
	const struct inode_operations *dir_inode_ops;
	const struct inode_operations *file_inode_ops;
	const struct file_operations *file_ops;

	int	(*getroot) (struct nfs_server *, struct nfs_fh *,
			    struct nfs_fsinfo *);
	struct vfsmount *(*submount) (struct nfs_server *, struct dentry *,
				      struct nfs_fh *, struct nfs_fattr *);
	struct dentry *(*try_mount) (int, const char *, struct nfs_mount_info *,
				     struct nfs_subversion *);
	int	(*getattr) (struct nfs_server *, struct nfs_fh *,
			    struct nfs_fattr *, struct nfs4_label *);
	int	(*setattr) (struct dentry *, struct nfs_fattr *,
			    struct iattr *);
	int	(*lookup)  (struct inode *, const struct qstr *,
			    struct nfs_fh *, struct nfs_fattr *,
			    struct nfs4_label *);
	int	(*access)  (struct inode *, struct nfs_access_entry *);
	int	(*readlink)(struct inode *, struct page *, unsigned int,
			    unsigned int);
	int	(*create)  (struct inode *, struct dentry *,
			    struct iattr *, int);
	int	(*remove)  (struct inode *, const struct qstr *);
	void	(*unlink_setup)  (struct rpc_message *, struct inode *dir);
	void	(*unlink_rpc_prepare) (struct rpc_task *, struct nfs_unlinkdata *);
	int	(*unlink_done) (struct rpc_task *, struct inode *);
	void	(*rename_setup)  (struct rpc_message *msg, struct inode *dir);
	void	(*rename_rpc_prepare)(struct rpc_task *task, struct nfs_renamedata *);
	int	(*rename_done) (struct rpc_task *task, struct inode *old_dir, struct inode *new_dir);
	int	(*link)    (struct inode *, struct inode *, const struct qstr *);
	int	(*symlink) (struct inode *, struct dentry *, struct page *,
			    unsigned int, struct iattr *);
	int	(*mkdir)   (struct inode *, struct dentry *, struct iattr *);
	int	(*rmdir)   (struct inode *, const struct qstr *);
	int	(*readdir) (struct dentry *, struct rpc_cred *,
			    u64, struct page **, unsigned int, int);
	int	(*mknod)   (struct inode *, struct dentry *, struct iattr *,
			    dev_t);
	int	(*statfs)  (struct nfs_server *, struct nfs_fh *,
			    struct nfs_fsstat *);
	int	(*fsinfo)  (struct nfs_server *, struct nfs_fh *,
			    struct nfs_fsinfo *);
	int	(*pathconf) (struct nfs_server *, struct nfs_fh *,
			     struct nfs_pathconf *);
	int	(*set_capabilities)(struct nfs_server *, struct nfs_fh *);
	int	(*decode_dirent)(struct xdr_stream *, struct nfs_entry *, int);
	int	(*pgio_rpc_prepare)(struct rpc_task *,
				    struct nfs_pgio_header *);
	void	(*read_setup)(struct nfs_pgio_header *, struct rpc_message *);
	int	(*read_done)(struct rpc_task *, struct nfs_pgio_header *);
	void	(*write_setup)(struct nfs_pgio_header *, struct rpc_message *);
	int	(*write_done)(struct rpc_task *, struct nfs_pgio_header *);
	void	(*commit_setup) (struct nfs_commit_data *, struct rpc_message *);
	void	(*commit_rpc_prepare)(struct rpc_task *, struct nfs_commit_data *);
	int	(*commit_done) (struct rpc_task *, struct nfs_commit_data *);
	int	(*lock)(struct file *, int, struct file_lock *);
	int	(*lock_check_bounds)(const struct file_lock *);
	void	(*clear_acl_cache)(struct inode *);
	void	(*close_context)(struct nfs_open_context *ctx, int);
	struct inode * (*open_context) (struct inode *dir,
				struct nfs_open_context *ctx,
				int open_flags,
				struct iattr *iattr,
				int *);
	int (*have_delegation)(struct inode *, fmode_t);
	int (*return_delegation)(struct inode *);
	struct nfs_client *(*alloc_client) (const struct nfs_client_initdata *);
	struct nfs_client *(*init_client) (struct nfs_client *,
				const struct nfs_client_initdata *);
	void	(*free_client) (struct nfs_client *);
	struct nfs_server *(*create_server)(struct nfs_mount_info *, struct nfs_subversion *);
	struct nfs_server *(*clone_server)(struct nfs_server *, struct nfs_fh *,
					   struct nfs_fattr *, rpc_authflavor_t);
};

/*
 * 	NFS_CALL(getattr, inode, (fattr));
 * into
 *	NFS_PROTO(inode)->getattr(fattr);
 */
#define NFS_CALL(op, inode, args)	NFS_PROTO(inode)->op args

/*
 * Function vectors etc. for the NFS client
 */
extern const struct nfs_rpc_ops	nfs_v2_clientops;
extern const struct nfs_rpc_ops	nfs_v3_clientops;
extern const struct nfs_rpc_ops	nfs_v4_clientops;
extern const struct rpc_version nfs_version2;
extern const struct rpc_version nfs_version3;
extern const struct rpc_version nfs_version4;

extern const struct rpc_version nfsacl_version3;
extern const struct rpc_program nfsacl_program;

#endif