include/linux/nfs4.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  *  include/linux/nfs4.h
   4  *
   5  *  NFSv4 protocol definitions.
   6  *
   7  *  Copyright (c) 2002 The Regents of the University of Michigan.
   8  *  All rights reserved.
   9  *
  10  *  Kendrick Smith <kmsmith@umich.edu>
  11  *  Andy Adamson   <andros@umich.edu>
  12  */
  13 #ifndef _LINUX_NFS4_H
  14 #define _LINUX_NFS4_H
  15
  16 #include <linux/list.h>
  17 #include <linux/uidgid.h>
  18 #include <uapi/linux/nfs4.h>
  19 #include <linux/sunrpc/msg_prot.h>
  20
  21 enum nfs4_acl_whotype {
  22         NFS4_ACL_WHO_NAMED = 0,
  23         NFS4_ACL_WHO_OWNER,
  24         NFS4_ACL_WHO_GROUP,
  25         NFS4_ACL_WHO_EVERYONE,
  26 };
  27
  28 struct nfs4_ace {
  29         uint32_t        type;
  30         uint32_t        flag;
  31         uint32_t        access_mask;
  32         int             whotype;
  33         union {
  34                 kuid_t  who_uid;
  35                 kgid_t  who_gid;
  36         };
  37 };
  38
  39 struct nfs4_acl {
  40         uint32_t        naces;
  41         struct nfs4_ace aces[0];
  42 };
  43
  44 #define NFS4_MAXLABELLEN        2048
  45
  46 struct nfs4_label {
  47         uint32_t        lfs;
  48         uint32_t        pi;
  49         u32             len;
  50         char    *label;
  51 };
  52
  53 typedef struct { char data[NFS4_VERIFIER_SIZE]; } nfs4_verifier;
  54
  55 struct nfs4_stateid_struct {
  56         union {
  57                 char data[NFS4_STATEID_SIZE];
  58                 struct {
  59                         __be32 seqid;
  60                         char other[NFS4_STATEID_OTHER_SIZE];
  61                 } __attribute__ ((packed));
  62         };
  63
  64         enum {
  65                 NFS4_INVALID_STATEID_TYPE = 0,
  66                 NFS4_SPECIAL_STATEID_TYPE,
  67                 NFS4_OPEN_STATEID_TYPE,
  68                 NFS4_LOCK_STATEID_TYPE,
  69                 NFS4_DELEGATION_STATEID_TYPE,
  70                 NFS4_LAYOUT_STATEID_TYPE,
  71                 NFS4_PNFS_DS_STATEID_TYPE,
  72                 NFS4_REVOKED_STATEID_TYPE,
  73         } type;
  74 };
  75
  76 typedef struct nfs4_stateid_struct nfs4_stateid;
  77
  78 enum nfs_opnum4 {
  79         OP_ACCESS = 3,
  80         OP_CLOSE = 4,
  81         OP_COMMIT = 5,
  82         OP_CREATE = 6,
  83         OP_DELEGPURGE = 7,
  84         OP_DELEGRETURN = 8,
  85         OP_GETATTR = 9,
  86         OP_GETFH = 10,
  87         OP_LINK = 11,
  88         OP_LOCK = 12,
  89         OP_LOCKT = 13,
  90         OP_LOCKU = 14,
  91         OP_LOOKUP = 15,
  92         OP_LOOKUPP = 16,
  93         OP_NVERIFY = 17,
  94         OP_OPEN = 18,
  95         OP_OPENATTR = 19,
  96         OP_OPEN_CONFIRM = 20,
  97         OP_OPEN_DOWNGRADE = 21,
  98         OP_PUTFH = 22,
  99         OP_PUTPUBFH = 23,
 100         OP_PUTROOTFH = 24,
 101         OP_READ = 25,
 102         OP_READDIR = 26,
 103         OP_READLINK = 27,
 104         OP_REMOVE = 28,
 105         OP_RENAME = 29,
 106         OP_RENEW = 30,
 107         OP_RESTOREFH = 31,
 108         OP_SAVEFH = 32,
 109         OP_SECINFO = 33,
 110         OP_SETATTR = 34,
 111         OP_SETCLIENTID = 35,
 112         OP_SETCLIENTID_CONFIRM = 36,
 113         OP_VERIFY = 37,
 114         OP_WRITE = 38,
 115         OP_RELEASE_LOCKOWNER = 39,
 116
 117         /* nfs41 */
 118         OP_BACKCHANNEL_CTL = 40,
 119         OP_BIND_CONN_TO_SESSION = 41,
 120         OP_EXCHANGE_ID = 42,
 121         OP_CREATE_SESSION = 43,
 122         OP_DESTROY_SESSION = 44,
 123         OP_FREE_STATEID = 45,
 124         OP_GET_DIR_DELEGATION = 46,
 125         OP_GETDEVICEINFO = 47,
 126         OP_GETDEVICELIST = 48,
 127         OP_LAYOUTCOMMIT = 49,
 128         OP_LAYOUTGET = 50,
 129         OP_LAYOUTRETURN = 51,
 130         OP_SECINFO_NO_NAME = 52,
 131         OP_SEQUENCE = 53,
 132         OP_SET_SSV = 54,
 133         OP_TEST_STATEID = 55,
 134         OP_WANT_DELEGATION = 56,
 135         OP_DESTROY_CLIENTID = 57,
 136         OP_RECLAIM_COMPLETE = 58,
 137
 138         /* nfs42 */
 139         OP_ALLOCATE = 59,
 140         OP_COPY = 60,
 141         OP_COPY_NOTIFY = 61,
 142         OP_DEALLOCATE = 62,
 143         OP_IO_ADVISE = 63,
 144         OP_LAYOUTERROR = 64,
 145         OP_LAYOUTSTATS = 65,
 146         OP_OFFLOAD_CANCEL = 66,
 147         OP_OFFLOAD_STATUS = 67,
 148         OP_READ_PLUS = 68,
 149         OP_SEEK = 69,
 150         OP_WRITE_SAME = 70,
 151         OP_CLONE = 71,
 152
 153         OP_ILLEGAL = 10044,
 154 };
 155
 156 /*Defining first and last NFS4 operations implemented.
 157 Needs to be updated if more operations are defined in future.*/
 158
 159 #define FIRST_NFS4_OP   OP_ACCESS
 160 #define LAST_NFS40_OP   OP_RELEASE_LOCKOWNER
 161 #define LAST_NFS41_OP   OP_RECLAIM_COMPLETE
 162 #define LAST_NFS42_OP   OP_CLONE
 163 #define LAST_NFS4_OP    LAST_NFS42_OP
 164
 165 enum nfsstat4 {
 166         NFS4_OK = 0,
 167         NFS4ERR_PERM = 1,
 168         NFS4ERR_NOENT = 2,
 169         NFS4ERR_IO = 5,
 170         NFS4ERR_NXIO = 6,
 171         NFS4ERR_ACCESS = 13,
 172         NFS4ERR_EXIST = 17,
 173         NFS4ERR_XDEV = 18,
 174         /* Unused/reserved 19 */
 175         NFS4ERR_NOTDIR = 20,
 176         NFS4ERR_ISDIR = 21,
 177         NFS4ERR_INVAL = 22,
 178         NFS4ERR_FBIG = 27,
 179         NFS4ERR_NOSPC = 28,
 180         NFS4ERR_ROFS = 30,
 181         NFS4ERR_MLINK = 31,
 182         NFS4ERR_NAMETOOLONG = 63,
 183         NFS4ERR_NOTEMPTY = 66,
 184         NFS4ERR_DQUOT = 69,
 185         NFS4ERR_STALE = 70,
 186         NFS4ERR_BADHANDLE = 10001,
 187         NFS4ERR_BAD_COOKIE = 10003,
 188         NFS4ERR_NOTSUPP = 10004,
 189         NFS4ERR_TOOSMALL = 10005,
 190         NFS4ERR_SERVERFAULT = 10006,
 191         NFS4ERR_BADTYPE = 10007,
 192         NFS4ERR_DELAY = 10008,
 193         NFS4ERR_SAME = 10009,
 194         NFS4ERR_DENIED = 10010,
 195         NFS4ERR_EXPIRED = 10011,
 196         NFS4ERR_LOCKED = 10012,
 197         NFS4ERR_GRACE = 10013,
 198         NFS4ERR_FHEXPIRED = 10014,
 199         NFS4ERR_SHARE_DENIED = 10015,
 200         NFS4ERR_WRONGSEC = 10016,
 201         NFS4ERR_CLID_INUSE = 10017,
 202         NFS4ERR_RESOURCE = 10018,
 203         NFS4ERR_MOVED = 10019,
 204         NFS4ERR_NOFILEHANDLE = 10020,
 205         NFS4ERR_MINOR_VERS_MISMATCH = 10021,
 206         NFS4ERR_STALE_CLIENTID = 10022,
 207         NFS4ERR_STALE_STATEID = 10023,
 208         NFS4ERR_OLD_STATEID = 10024,
 209         NFS4ERR_BAD_STATEID = 10025,
 210         NFS4ERR_BAD_SEQID = 10026,
 211         NFS4ERR_NOT_SAME = 10027,
 212         NFS4ERR_LOCK_RANGE = 10028,
 213         NFS4ERR_SYMLINK = 10029,
 214         NFS4ERR_RESTOREFH = 10030,
 215         NFS4ERR_LEASE_MOVED = 10031,
 216         NFS4ERR_ATTRNOTSUPP = 10032,
 217         NFS4ERR_NO_GRACE = 10033,
 218         NFS4ERR_RECLAIM_BAD = 10034,
 219         NFS4ERR_RECLAIM_CONFLICT = 10035,
 220         NFS4ERR_BADXDR = 10036,
 221         NFS4ERR_LOCKS_HELD = 10037,
 222         NFS4ERR_OPENMODE = 10038,
 223         NFS4ERR_BADOWNER = 10039,
 224         NFS4ERR_BADCHAR = 10040,
 225         NFS4ERR_BADNAME = 10041,
 226         NFS4ERR_BAD_RANGE = 10042,
 227         NFS4ERR_LOCK_NOTSUPP = 10043,
 228         NFS4ERR_OP_ILLEGAL = 10044,
 229         NFS4ERR_DEADLOCK = 10045,
 230         NFS4ERR_FILE_OPEN = 10046,
 231         NFS4ERR_ADMIN_REVOKED = 10047,
 232         NFS4ERR_CB_PATH_DOWN = 10048,
 233
 234         /* nfs41 */
 235         NFS4ERR_BADIOMODE       = 10049,
 236         NFS4ERR_BADLAYOUT       = 10050,
 237         NFS4ERR_BAD_SESSION_DIGEST = 10051,
 238         NFS4ERR_BADSESSION      = 10052,
 239         NFS4ERR_BADSLOT         = 10053,
 240         NFS4ERR_COMPLETE_ALREADY = 10054,
 241         NFS4ERR_CONN_NOT_BOUND_TO_SESSION = 10055,
 242         NFS4ERR_DELEG_ALREADY_WANTED = 10056,
 243         NFS4ERR_BACK_CHAN_BUSY  = 10057,        /* backchan reqs outstanding */
 244         NFS4ERR_LAYOUTTRYLATER  = 10058,
 245         NFS4ERR_LAYOUTUNAVAILABLE = 10059,
 246         NFS4ERR_NOMATCHING_LAYOUT = 10060,
 247         NFS4ERR_RECALLCONFLICT  = 10061,
 248         NFS4ERR_UNKNOWN_LAYOUTTYPE = 10062,
 249         NFS4ERR_SEQ_MISORDERED = 10063,         /* unexpected seq.id in req */
 250         NFS4ERR_SEQUENCE_POS    = 10064,        /* [CB_]SEQ. op not 1st op */
 251         NFS4ERR_REQ_TOO_BIG     = 10065,        /* request too big */
 252         NFS4ERR_REP_TOO_BIG     = 10066,        /* reply too big */
 253         NFS4ERR_REP_TOO_BIG_TO_CACHE = 10067,   /* rep. not all cached */
 254         NFS4ERR_RETRY_UNCACHED_REP = 10068,     /* retry & rep. uncached */
 255         NFS4ERR_UNSAFE_COMPOUND = 10069,        /* retry/recovery too hard */
 256         NFS4ERR_TOO_MANY_OPS    = 10070,        /* too many ops in [CB_]COMP */
 257         NFS4ERR_OP_NOT_IN_SESSION = 10071,      /* op needs [CB_]SEQ. op */
 258         NFS4ERR_HASH_ALG_UNSUPP = 10072,        /* hash alg. not supp. */
 259                                                 /* Error 10073 is unused. */
 260         NFS4ERR_CLIENTID_BUSY   = 10074,        /* clientid has state */
 261         NFS4ERR_PNFS_IO_HOLE    = 10075,        /* IO to _SPARSE file hole */
 262         NFS4ERR_SEQ_FALSE_RETRY = 10076,        /* retry not original */
 263         NFS4ERR_BAD_HIGH_SLOT   = 10077,        /* sequence arg bad */
 264         NFS4ERR_DEADSESSION     = 10078,        /* persistent session dead */
 265         NFS4ERR_ENCR_ALG_UNSUPP = 10079,        /* SSV alg mismatch */
 266         NFS4ERR_PNFS_NO_LAYOUT  = 10080,        /* direct I/O with no layout */
 267         NFS4ERR_NOT_ONLY_OP     = 10081,        /* bad compound */
 268         NFS4ERR_WRONG_CRED      = 10082,        /* permissions:state change */
 269         NFS4ERR_WRONG_TYPE      = 10083,        /* current operation mismatch */
 270         NFS4ERR_DIRDELEG_UNAVAIL = 10084,       /* no directory delegation */
 271         NFS4ERR_REJECT_DELEG    = 10085,        /* on callback */
 272         NFS4ERR_RETURNCONFLICT  = 10086,        /* outstanding layoutreturn */
 273         NFS4ERR_DELEG_REVOKED   = 10087,        /* deleg./layout revoked */
 274
 275         /* nfs42 */
 276         NFS4ERR_PARTNER_NOTSUPP = 10088,
 277         NFS4ERR_PARTNER_NO_AUTH = 10089,
 278         NFS4ERR_UNION_NOTSUPP = 10090,
 279         NFS4ERR_OFFLOAD_DENIED = 10091,
 280         NFS4ERR_WRONG_LFS = 10092,
 281         NFS4ERR_BADLABEL = 10093,
 282         NFS4ERR_OFFLOAD_NO_REQS = 10094,
 283 };
 284
 285 static inline bool seqid_mutating_err(u32 err)
 286 {
 287         /* See RFC 7530, section 9.1.7 */
 288         switch (err) {
 289         case NFS4ERR_STALE_CLIENTID:
 290         case NFS4ERR_STALE_STATEID:
 291         case NFS4ERR_BAD_STATEID:
 292         case NFS4ERR_BAD_SEQID:
 293         case NFS4ERR_BADXDR:
 294         case NFS4ERR_RESOURCE:
 295         case NFS4ERR_NOFILEHANDLE:
 296         case NFS4ERR_MOVED:
 297                 return false;
 298         };
 299         return true;
 300 }
 301
 302 /*
 303  * Note: NF4BAD is not actually part of the protocol; it is just used
 304  * internally by nfsd.
 305  */
 306 enum nfs_ftype4 {
 307         NF4BAD          = 0,
 308         NF4REG          = 1,    /* Regular File */
 309         NF4DIR          = 2,    /* Directory */
 310         NF4BLK          = 3,    /* Special File - block device */
 311         NF4CHR          = 4,    /* Special File - character device */
 312         NF4LNK          = 5,    /* Symbolic Link */
 313         NF4SOCK         = 6,    /* Special File - socket */
 314         NF4FIFO         = 7,    /* Special File - fifo */
 315         NF4ATTRDIR      = 8,    /* Attribute Directory */
 316         NF4NAMEDATTR    = 9     /* Named Attribute */
 317 };
 318
 319 enum open_claim_type4 {
 320         NFS4_OPEN_CLAIM_NULL = 0,
 321         NFS4_OPEN_CLAIM_PREVIOUS = 1,
 322         NFS4_OPEN_CLAIM_DELEGATE_CUR = 2,
 323         NFS4_OPEN_CLAIM_DELEGATE_PREV = 3,
 324         NFS4_OPEN_CLAIM_FH = 4, /* 4.1 */
 325         NFS4_OPEN_CLAIM_DELEG_CUR_FH = 5, /* 4.1 */
 326         NFS4_OPEN_CLAIM_DELEG_PREV_FH = 6, /* 4.1 */
 327 };
 328
 329 enum opentype4 {
 330         NFS4_OPEN_NOCREATE = 0,
 331         NFS4_OPEN_CREATE = 1
 332 };
 333
 334 enum createmode4 {
 335         NFS4_CREATE_UNCHECKED = 0,
 336         NFS4_CREATE_GUARDED = 1,
 337         NFS4_CREATE_EXCLUSIVE = 2,
 338         /*
 339          * New to NFSv4.1. If session is persistent,
 340          * GUARDED4 MUST be used. Otherwise, use
 341          * EXCLUSIVE4_1 instead of EXCLUSIVE4.
 342          */
 343         NFS4_CREATE_EXCLUSIVE4_1 = 3
 344 };
 345
 346 enum limit_by4 {
 347         NFS4_LIMIT_SIZE = 1,
 348         NFS4_LIMIT_BLOCKS = 2
 349 };
 350
 351 enum open_delegation_type4 {
 352         NFS4_OPEN_DELEGATE_NONE = 0,
 353         NFS4_OPEN_DELEGATE_READ = 1,
 354         NFS4_OPEN_DELEGATE_WRITE = 2,
 355         NFS4_OPEN_DELEGATE_NONE_EXT = 3, /* 4.1 */
 356 };
 357
 358 enum why_no_delegation4 { /* new to v4.1 */
 359         WND4_NOT_WANTED = 0,
 360         WND4_CONTENTION = 1,
 361         WND4_RESOURCE = 2,
 362         WND4_NOT_SUPP_FTYPE = 3,
 363         WND4_WRITE_DELEG_NOT_SUPP_FTYPE = 4,
 364         WND4_NOT_SUPP_UPGRADE = 5,
 365         WND4_NOT_SUPP_DOWNGRADE = 6,
 366         WND4_CANCELLED = 7,
 367         WND4_IS_DIR = 8,
 368 };
 369
 370 enum lock_type4 {
 371         NFS4_UNLOCK_LT = 0,
 372         NFS4_READ_LT = 1,
 373         NFS4_WRITE_LT = 2,
 374         NFS4_READW_LT = 3,
 375         NFS4_WRITEW_LT = 4
 376 };
 377
 378 enum change_attr_type4 {
 379         NFS4_CHANGE_TYPE_IS_MONOTONIC_INCR = 0,
 380         NFS4_CHANGE_TYPE_IS_VERSION_COUNTER = 1,
 381         NFS4_CHANGE_TYPE_IS_VERSION_COUNTER_NOPNFS = 2,
 382         NFS4_CHANGE_TYPE_IS_TIME_METADATA = 3,
 383         NFS4_CHANGE_TYPE_IS_UNDEFINED = 4
 384 };
 385
 386 /* Mandatory Attributes */
 387 #define FATTR4_WORD0_SUPPORTED_ATTRS    (1UL << 0)
 388 #define FATTR4_WORD0_TYPE               (1UL << 1)
 389 #define FATTR4_WORD0_FH_EXPIRE_TYPE     (1UL << 2)
 390 #define FATTR4_WORD0_CHANGE             (1UL << 3)
 391 #define FATTR4_WORD0_SIZE               (1UL << 4)
 392 #define FATTR4_WORD0_LINK_SUPPORT       (1UL << 5)
 393 #define FATTR4_WORD0_SYMLINK_SUPPORT    (1UL << 6)
 394 #define FATTR4_WORD0_NAMED_ATTR         (1UL << 7)
 395 #define FATTR4_WORD0_FSID               (1UL << 8)
 396 #define FATTR4_WORD0_UNIQUE_HANDLES     (1UL << 9)
 397 #define FATTR4_WORD0_LEASE_TIME         (1UL << 10)
 398 #define FATTR4_WORD0_RDATTR_ERROR       (1UL << 11)
 399 /* Mandatory in NFSv4.1 */
 400 #define FATTR4_WORD2_SUPPATTR_EXCLCREAT (1UL << 11)
 401
 402 /* Recommended Attributes */
 403 #define FATTR4_WORD0_ACL                (1UL << 12)
 404 #define FATTR4_WORD0_ACLSUPPORT         (1UL << 13)
 405 #define FATTR4_WORD0_ARCHIVE            (1UL << 14)
 406 #define FATTR4_WORD0_CANSETTIME         (1UL << 15)
 407 #define FATTR4_WORD0_CASE_INSENSITIVE   (1UL << 16)
 408 #define FATTR4_WORD0_CASE_PRESERVING    (1UL << 17)
 409 #define FATTR4_WORD0_CHOWN_RESTRICTED   (1UL << 18)
 410 #define FATTR4_WORD0_FILEHANDLE         (1UL << 19)
 411 #define FATTR4_WORD0_FILEID             (1UL << 20)
 412 #define FATTR4_WORD0_FILES_AVAIL        (1UL << 21)
 413 #define FATTR4_WORD0_FILES_FREE         (1UL << 22)
 414 #define FATTR4_WORD0_FILES_TOTAL        (1UL << 23)
 415 #define FATTR4_WORD0_FS_LOCATIONS       (1UL << 24)
 416 #define FATTR4_WORD0_HIDDEN             (1UL << 25)
 417 #define FATTR4_WORD0_HOMOGENEOUS        (1UL << 26)
 418 #define FATTR4_WORD0_MAXFILESIZE        (1UL << 27)
 419 #define FATTR4_WORD0_MAXLINK            (1UL << 28)
 420 #define FATTR4_WORD0_MAXNAME            (1UL << 29)
 421 #define FATTR4_WORD0_MAXREAD            (1UL << 30)
 422 #define FATTR4_WORD0_MAXWRITE           (1UL << 31)
 423 #define FATTR4_WORD1_MIMETYPE           (1UL << 0)
 424 #define FATTR4_WORD1_MODE               (1UL << 1)
 425 #define FATTR4_WORD1_NO_TRUNC           (1UL << 2)
 426 #define FATTR4_WORD1_NUMLINKS           (1UL << 3)
 427 #define FATTR4_WORD1_OWNER              (1UL << 4)
 428 #define FATTR4_WORD1_OWNER_GROUP        (1UL << 5)
 429 #define FATTR4_WORD1_QUOTA_HARD         (1UL << 6)
 430 #define FATTR4_WORD1_QUOTA_SOFT         (1UL << 7)
 431 #define FATTR4_WORD1_QUOTA_USED         (1UL << 8)
 432 #define FATTR4_WORD1_RAWDEV             (1UL << 9)
 433 #define FATTR4_WORD1_SPACE_AVAIL        (1UL << 10)
 434 #define FATTR4_WORD1_SPACE_FREE         (1UL << 11)
 435 #define FATTR4_WORD1_SPACE_TOTAL        (1UL << 12)
 436 #define FATTR4_WORD1_SPACE_USED         (1UL << 13)
 437 #define FATTR4_WORD1_SYSTEM             (1UL << 14)
 438 #define FATTR4_WORD1_TIME_ACCESS        (1UL << 15)
 439 #define FATTR4_WORD1_TIME_ACCESS_SET    (1UL << 16)
 440 #define FATTR4_WORD1_TIME_BACKUP        (1UL << 17)
 441 #define FATTR4_WORD1_TIME_CREATE        (1UL << 18)
 442 #define FATTR4_WORD1_TIME_DELTA         (1UL << 19)
 443 #define FATTR4_WORD1_TIME_METADATA      (1UL << 20)
 444 #define FATTR4_WORD1_TIME_MODIFY        (1UL << 21)
 445 #define FATTR4_WORD1_TIME_MODIFY_SET    (1UL << 22)
 446 #define FATTR4_WORD1_MOUNTED_ON_FILEID  (1UL << 23)
 447 #define FATTR4_WORD1_FS_LAYOUT_TYPES    (1UL << 30)
 448 #define FATTR4_WORD2_LAYOUT_TYPES       (1UL << 0)
 449 #define FATTR4_WORD2_LAYOUT_BLKSIZE     (1UL << 1)
 450 #define FATTR4_WORD2_MDSTHRESHOLD       (1UL << 4)
 451 #define FATTR4_WORD2_CLONE_BLKSIZE      (1UL << 13)
 452 #define FATTR4_WORD2_CHANGE_ATTR_TYPE   (1UL << 15)
 453 #define FATTR4_WORD2_SECURITY_LABEL     (1UL << 16)
 454 #define FATTR4_WORD2_MODE_UMASK         (1UL << 17)
 455
 456 /* MDS threshold bitmap bits */
 457 #define THRESHOLD_RD                    (1UL << 0)
 458 #define THRESHOLD_WR                    (1UL << 1)
 459 #define THRESHOLD_RD_IO                 (1UL << 2)
 460 #define THRESHOLD_WR_IO                 (1UL << 3)
 461
 462 #define NFSPROC4_NULL 0
 463 #define NFSPROC4_COMPOUND 1
 464 #define NFS4_VERSION 4
 465 #define NFS4_MINOR_VERSION 0
 466
 467 #define NFS4_DEBUG 1
 468
 469 /*
 470  * Index of predefined Linux client operations
 471  *
 472  * To ensure that /proc/net/rpc/nfs remains correctly ordered, please
 473  * append only to this enum when adding new client operations.
 474  */
 475
 476 enum {
 477         NFSPROC4_CLNT_NULL = 0,         /* Unused */
 478         NFSPROC4_CLNT_READ,
 479         NFSPROC4_CLNT_WRITE,
 480         NFSPROC4_CLNT_COMMIT,
 481         NFSPROC4_CLNT_OPEN,
 482         NFSPROC4_CLNT_OPEN_CONFIRM,
 483         NFSPROC4_CLNT_OPEN_NOATTR,
 484         NFSPROC4_CLNT_OPEN_DOWNGRADE,
 485         NFSPROC4_CLNT_CLOSE,
 486         NFSPROC4_CLNT_SETATTR,
 487         NFSPROC4_CLNT_FSINFO,
 488         NFSPROC4_CLNT_RENEW,
 489         NFSPROC4_CLNT_SETCLIENTID,
 490         NFSPROC4_CLNT_SETCLIENTID_CONFIRM,
 491         NFSPROC4_CLNT_LOCK,
 492         NFSPROC4_CLNT_LOCKT,
 493         NFSPROC4_CLNT_LOCKU,
 494         NFSPROC4_CLNT_ACCESS,
 495         NFSPROC4_CLNT_GETATTR,
 496         NFSPROC4_CLNT_LOOKUP,
 497         NFSPROC4_CLNT_LOOKUP_ROOT,
 498         NFSPROC4_CLNT_REMOVE,
 499         NFSPROC4_CLNT_RENAME,
 500         NFSPROC4_CLNT_LINK,
 501         NFSPROC4_CLNT_SYMLINK,
 502         NFSPROC4_CLNT_CREATE,
 503         NFSPROC4_CLNT_PATHCONF,
 504         NFSPROC4_CLNT_STATFS,
 505         NFSPROC4_CLNT_READLINK,
 506         NFSPROC4_CLNT_READDIR,
 507         NFSPROC4_CLNT_SERVER_CAPS,
 508         NFSPROC4_CLNT_DELEGRETURN,
 509         NFSPROC4_CLNT_GETACL,
 510         NFSPROC4_CLNT_SETACL,
 511         NFSPROC4_CLNT_FS_LOCATIONS,
 512         NFSPROC4_CLNT_RELEASE_LOCKOWNER,
 513         NFSPROC4_CLNT_SECINFO,
 514         NFSPROC4_CLNT_FSID_PRESENT,
 515
 516         NFSPROC4_CLNT_EXCHANGE_ID,
 517         NFSPROC4_CLNT_CREATE_SESSION,
 518         NFSPROC4_CLNT_DESTROY_SESSION,
 519         NFSPROC4_CLNT_SEQUENCE,
 520         NFSPROC4_CLNT_GET_LEASE_TIME,
 521         NFSPROC4_CLNT_RECLAIM_COMPLETE,
 522         NFSPROC4_CLNT_LAYOUTGET,
 523         NFSPROC4_CLNT_GETDEVICEINFO,
 524         NFSPROC4_CLNT_LAYOUTCOMMIT,
 525         NFSPROC4_CLNT_LAYOUTRETURN,
 526         NFSPROC4_CLNT_SECINFO_NO_NAME,
 527         NFSPROC4_CLNT_TEST_STATEID,
 528         NFSPROC4_CLNT_FREE_STATEID,
 529         NFSPROC4_CLNT_GETDEVICELIST,
 530         NFSPROC4_CLNT_BIND_CONN_TO_SESSION,
 531         NFSPROC4_CLNT_DESTROY_CLIENTID,
 532
 533         NFSPROC4_CLNT_SEEK,
 534         NFSPROC4_CLNT_ALLOCATE,
 535         NFSPROC4_CLNT_DEALLOCATE,
 536         NFSPROC4_CLNT_LAYOUTSTATS,
 537         NFSPROC4_CLNT_CLONE,
 538         NFSPROC4_CLNT_COPY,
 539         NFSPROC4_CLNT_OFFLOAD_CANCEL,
 540
 541         NFSPROC4_CLNT_LOOKUPP,
 542         NFSPROC4_CLNT_LAYOUTERROR,
 543
 544         NFSPROC4_CLNT_COPY_NOTIFY,
 545 };
 546
 547 /* nfs41 types */
 548 struct nfs4_sessionid {
 549         unsigned char data[NFS4_MAX_SESSIONID_LEN];
 550 };
 551
 552 /* Create Session Flags */
 553 #define SESSION4_PERSIST        0x001
 554 #define SESSION4_BACK_CHAN      0x002
 555 #define SESSION4_RDMA           0x004
 556
 557 #define SESSION4_FLAG_MASK_A    0x007
 558
 559 enum state_protect_how4 {
 560         SP4_NONE        = 0,
 561         SP4_MACH_CRED   = 1,
 562         SP4_SSV         = 2
 563 };
 564
 565 enum pnfs_layouttype {
 566         LAYOUT_NFSV4_1_FILES  = 1,
 567         LAYOUT_OSD2_OBJECTS = 2,
 568         LAYOUT_BLOCK_VOLUME = 3,
 569         LAYOUT_FLEX_FILES = 4,
 570         LAYOUT_SCSI = 5,
 571         LAYOUT_TYPE_MAX
 572 };
 573
 574 /* used for both layout return and recall */
 575 enum pnfs_layoutreturn_type {
 576         RETURN_FILE = 1,
 577         RETURN_FSID = 2,
 578         RETURN_ALL  = 3
 579 };
 580
 581 enum pnfs_iomode {
 582         IOMODE_READ = 1,
 583         IOMODE_RW = 2,
 584         IOMODE_ANY = 3,
 585 };
 586
 587 enum pnfs_notify_deviceid_type4 {
 588         NOTIFY_DEVICEID4_CHANGE = 1 << 1,
 589         NOTIFY_DEVICEID4_DELETE = 1 << 2,
 590 };
 591
 592 enum pnfs_block_volume_type {
 593         PNFS_BLOCK_VOLUME_SIMPLE        = 0,
 594         PNFS_BLOCK_VOLUME_SLICE         = 1,
 595         PNFS_BLOCK_VOLUME_CONCAT        = 2,
 596         PNFS_BLOCK_VOLUME_STRIPE        = 3,
 597         PNFS_BLOCK_VOLUME_SCSI          = 4,
 598 };
 599
 600 enum pnfs_block_extent_state {
 601         PNFS_BLOCK_READWRITE_DATA       = 0,
 602         PNFS_BLOCK_READ_DATA            = 1,
 603         PNFS_BLOCK_INVALID_DATA         = 2,
 604         PNFS_BLOCK_NONE_DATA            = 3,
 605 };
 606
 607 /* on the wire size of a block layout extent */
 608 #define PNFS_BLOCK_EXTENT_SIZE \
 609         (7 * sizeof(__be32) + NFS4_DEVICEID4_SIZE)
 610
 611 /* on the wire size of a scsi commit range */
 612 #define PNFS_SCSI_RANGE_SIZE \
 613         (4 * sizeof(__be32))
 614
 615 enum scsi_code_set {
 616         PS_CODE_SET_BINARY      = 1,
 617         PS_CODE_SET_ASCII       = 2,
 618         PS_CODE_SET_UTF8        = 3
 619 };
 620
 621 enum scsi_designator_type {
 622         PS_DESIGNATOR_T10       = 1,
 623         PS_DESIGNATOR_EUI64     = 2,
 624         PS_DESIGNATOR_NAA       = 3,
 625         PS_DESIGNATOR_NAME      = 8
 626 };
 627
 628 #define NFL4_UFLG_MASK                  0x0000003F
 629 #define NFL4_UFLG_DENSE                 0x00000001
 630 #define NFL4_UFLG_COMMIT_THRU_MDS       0x00000002
 631 #define NFL4_UFLG_STRIPE_UNIT_SIZE_MASK 0xFFFFFFC0
 632
 633 /* Encoded in the loh_body field of type layouthint4 */
 634 enum filelayout_hint_care4 {
 635         NFLH4_CARE_DENSE                = NFL4_UFLG_DENSE,
 636         NFLH4_CARE_COMMIT_THRU_MDS      = NFL4_UFLG_COMMIT_THRU_MDS,
 637         NFLH4_CARE_STRIPE_UNIT_SIZE     = 0x00000040,
 638         NFLH4_CARE_STRIPE_COUNT         = 0x00000080
 639 };
 640
 641 #define NFS4_DEVICEID4_SIZE 16
 642
 643 struct nfs4_deviceid {
 644         char data[NFS4_DEVICEID4_SIZE];
 645 };
 646
 647 enum data_content4 {
 648         NFS4_CONTENT_DATA               = 0,
 649         NFS4_CONTENT_HOLE               = 1,
 650 };
 651
 652 enum pnfs_update_layout_reason {
 653         PNFS_UPDATE_LAYOUT_UNKNOWN = 0,
 654         PNFS_UPDATE_LAYOUT_NO_PNFS,
 655         PNFS_UPDATE_LAYOUT_RD_ZEROLEN,
 656         PNFS_UPDATE_LAYOUT_MDSTHRESH,
 657         PNFS_UPDATE_LAYOUT_NOMEM,
 658         PNFS_UPDATE_LAYOUT_BULK_RECALL,
 659         PNFS_UPDATE_LAYOUT_IO_TEST_FAIL,
 660         PNFS_UPDATE_LAYOUT_FOUND_CACHED,
 661         PNFS_UPDATE_LAYOUT_RETURN,
 662         PNFS_UPDATE_LAYOUT_RETRY,
 663         PNFS_UPDATE_LAYOUT_BLOCKED,
 664         PNFS_UPDATE_LAYOUT_INVALID_OPEN,
 665         PNFS_UPDATE_LAYOUT_SEND_LAYOUTGET,
 666         PNFS_UPDATE_LAYOUT_EXIT,
 667 };
 668
 669 #define NFS4_OP_MAP_NUM_LONGS                                   \
 670         DIV_ROUND_UP(LAST_NFS4_OP, 8 * sizeof(unsigned long))
 671 #define NFS4_OP_MAP_NUM_WORDS \
 672         (NFS4_OP_MAP_NUM_LONGS * sizeof(unsigned long) / sizeof(u32))
 673 struct nfs4_op_map {
 674         union {
 675                 unsigned long longs[NFS4_OP_MAP_NUM_LONGS];
 676                 u32 words[NFS4_OP_MAP_NUM_WORDS];
 677         } u;
 678 };
 679
 680 struct nfs42_netaddr {
 681         char            netid[RPCBIND_MAXNETIDLEN];
 682         char            addr[RPCBIND_MAXUADDRLEN + 1];
 683         u32             netid_len;
 684         u32             addr_len;
 685 };
 686
 687 enum netloc_type4 {
 688         NL4_NAME                = 1,
 689         NL4_URL                 = 2,
 690         NL4_NETADDR             = 3,
 691 };
 692
 693 struct nl4_server {
 694         enum netloc_type4       nl4_type;
 695         union {
 696                 struct { /* NL4_NAME, NL4_URL */
 697                         int     nl4_str_sz;
 698                         char    nl4_str[NFS4_OPAQUE_LIMIT + 1];
 699                 };
 700                 struct nfs42_netaddr    nl4_addr; /* NL4_NETADDR */
 701         } u;
 702 };
 703 #endif