include/linux/nfs_xdr.h

   1 #ifndef _LINUX_NFS_XDR_H
   2 #define _LINUX_NFS_XDR_H
   3
   4 #include <linux/nfsacl.h>
   5 #include <linux/sunrpc/gss_api.h>
   6
   7 /*
   8  * To change the maximum rsize and wsize supported by the NFS client, adjust
   9  * NFS_MAX_FILE_IO_SIZE.  64KB is a typical maximum, but some servers can
  10  * support a megabyte or more.  The default is left at 4096 bytes, which is
  11  * reasonable for NFS over UDP.
  12  */
  13 #define NFS_MAX_FILE_IO_SIZE    (1048576U)
  14 #define NFS_DEF_FILE_IO_SIZE    (4096U)
  15 #define NFS_MIN_FILE_IO_SIZE    (1024U)
  16
  17 struct nfs4_string {
  18         unsigned int len;
  19         char *data;
  20 };
  21
  22 struct nfs_fsid {
  23         uint64_t                major;
  24         uint64_t                minor;
  25 };
  26
  27 /*
  28  * Helper for checking equality between 2 fsids.
  29  */
  30 static inline int nfs_fsid_equal(const struct nfs_fsid *a, const struct nfs_fsid *b)
  31 {
  32         return a->major == b->major && a->minor == b->minor;
  33 }
  34
  35 struct nfs4_threshold {
  36         __u32   bm;
  37         __u32   l_type;
  38         __u64   rd_sz;
  39         __u64   wr_sz;
  40         __u64   rd_io_sz;
  41         __u64   wr_io_sz;
  42 };
  43
  44 struct nfs_fattr {
  45         unsigned int            valid;          /* which fields are valid */
  46         umode_t                 mode;
  47         __u32                   nlink;
  48         kuid_t                  uid;
  49         kgid_t                  gid;
  50         dev_t                   rdev;
  51         __u64                   size;
  52         union {
  53                 struct {
  54                         __u32   blocksize;
  55                         __u32   blocks;
  56                 } nfs2;
  57                 struct {
  58                         __u64   used;
  59                 } nfs3;
  60         } du;
  61         struct nfs_fsid         fsid;
  62         __u64                   fileid;
  63         __u64                   mounted_on_fileid;
  64         struct timespec         atime;
  65         struct timespec         mtime;
  66         struct timespec         ctime;
  67         __u64                   change_attr;    /* NFSv4 change attribute */
  68         __u64                   pre_change_attr;/* pre-op NFSv4 change attribute */
  69         __u64                   pre_size;       /* pre_op_attr.size       */
  70         struct timespec         pre_mtime;      /* pre_op_attr.mtime      */
  71         struct timespec         pre_ctime;      /* pre_op_attr.ctime      */
  72         unsigned long           time_start;
  73         unsigned long           gencount;
  74         struct nfs4_string      *owner_name;
  75         struct nfs4_string      *group_name;
  76         struct nfs4_threshold   *mdsthreshold;  /* pNFS threshold hints */
  77 };
  78
  79 #define NFS_ATTR_FATTR_TYPE             (1U << 0)
  80 #define NFS_ATTR_FATTR_MODE             (1U << 1)
  81 #define NFS_ATTR_FATTR_NLINK            (1U << 2)
  82 #define NFS_ATTR_FATTR_OWNER            (1U << 3)
  83 #define NFS_ATTR_FATTR_GROUP            (1U << 4)
  84 #define NFS_ATTR_FATTR_RDEV             (1U << 5)
  85 #define NFS_ATTR_FATTR_SIZE             (1U << 6)
  86 #define NFS_ATTR_FATTR_PRESIZE          (1U << 7)
  87 #define NFS_ATTR_FATTR_BLOCKS_USED      (1U << 8)
  88 #define NFS_ATTR_FATTR_SPACE_USED       (1U << 9)
  89 #define NFS_ATTR_FATTR_FSID             (1U << 10)
  90 #define NFS_ATTR_FATTR_FILEID           (1U << 11)
  91 #define NFS_ATTR_FATTR_ATIME            (1U << 12)
  92 #define NFS_ATTR_FATTR_MTIME            (1U << 13)
  93 #define NFS_ATTR_FATTR_CTIME            (1U << 14)
  94 #define NFS_ATTR_FATTR_PREMTIME         (1U << 15)
  95 #define NFS_ATTR_FATTR_PRECTIME         (1U << 16)
  96 #define NFS_ATTR_FATTR_CHANGE           (1U << 17)
  97 #define NFS_ATTR_FATTR_PRECHANGE        (1U << 18)
  98 #define NFS_ATTR_FATTR_V4_LOCATIONS     (1U << 19)
  99 #define NFS_ATTR_FATTR_V4_REFERRAL      (1U << 20)
 100 #define NFS_ATTR_FATTR_MOUNTPOINT       (1U << 21)
 101 #define NFS_ATTR_FATTR_MOUNTED_ON_FILEID (1U << 22)
 102 #define NFS_ATTR_FATTR_OWNER_NAME       (1U << 23)
 103 #define NFS_ATTR_FATTR_GROUP_NAME       (1U << 24)
 104 #define NFS_ATTR_FATTR_V4_SECURITY_LABEL (1U << 25)
 105
 106 #define NFS_ATTR_FATTR (NFS_ATTR_FATTR_TYPE \
 107                 | NFS_ATTR_FATTR_MODE \
 108                 | NFS_ATTR_FATTR_NLINK \
 109                 | NFS_ATTR_FATTR_OWNER \
 110                 | NFS_ATTR_FATTR_GROUP \
 111                 | NFS_ATTR_FATTR_RDEV \
 112                 | NFS_ATTR_FATTR_SIZE \
 113                 | NFS_ATTR_FATTR_FSID \
 114                 | NFS_ATTR_FATTR_FILEID \
 115                 | NFS_ATTR_FATTR_ATIME \
 116                 | NFS_ATTR_FATTR_MTIME \
 117                 | NFS_ATTR_FATTR_CTIME \
 118                 | NFS_ATTR_FATTR_CHANGE)
 119 #define NFS_ATTR_FATTR_V2 (NFS_ATTR_FATTR \
 120                 | NFS_ATTR_FATTR_BLOCKS_USED)
 121 #define NFS_ATTR_FATTR_V3 (NFS_ATTR_FATTR \
 122                 | NFS_ATTR_FATTR_SPACE_USED)
 123 #define NFS_ATTR_FATTR_V4 (NFS_ATTR_FATTR \
 124                 | NFS_ATTR_FATTR_SPACE_USED \
 125                 | NFS_ATTR_FATTR_V4_SECURITY_LABEL)
 126
 127 /*
 128  * Info on the file system
 129  */
 130 struct nfs_fsinfo {
 131         struct nfs_fattr        *fattr; /* Post-op attributes */
 132         __u32                   rtmax;  /* max.  read transfer size */
 133         __u32                   rtpref; /* pref. read transfer size */
 134         __u32                   rtmult; /* reads should be multiple of this */
 135         __u32                   wtmax;  /* max.  write transfer size */
 136         __u32                   wtpref; /* pref. write transfer size */
 137         __u32                   wtmult; /* writes should be multiple of this */
 138         __u32                   dtpref; /* pref. readdir transfer size */
 139         __u64                   maxfilesize;
 140         struct timespec         time_delta; /* server time granularity */
 141         __u32                   lease_time; /* in seconds */
 142         __u32                   layouttype; /* supported pnfs layout driver */
 143         __u32                   blksize; /* preferred pnfs io block size */
 144 };
 145
 146 struct nfs_fsstat {
 147         struct nfs_fattr        *fattr; /* Post-op attributes */
 148         __u64                   tbytes; /* total size in bytes */
 149         __u64                   fbytes; /* # of free bytes */
 150         __u64                   abytes; /* # of bytes available to user */
 151         __u64                   tfiles; /* # of files */
 152         __u64                   ffiles; /* # of free files */
 153         __u64                   afiles; /* # of files available to user */
 154 };
 155
 156 struct nfs2_fsstat {
 157         __u32                   tsize;  /* Server transfer size */
 158         __u32                   bsize;  /* Filesystem block size */
 159         __u32                   blocks; /* No. of "bsize" blocks on filesystem */
 160         __u32                   bfree;  /* No. of free "bsize" blocks */
 161         __u32                   bavail; /* No. of available "bsize" blocks */
 162 };
 163
 164 struct nfs_pathconf {
 165         struct nfs_fattr        *fattr; /* Post-op attributes */
 166         __u32                   max_link; /* max # of hard links */
 167         __u32                   max_namelen; /* max name length */
 168 };
 169
 170 struct nfs4_change_info {
 171         u32                     atomic;
 172         u64                     before;
 173         u64                     after;
 174 };
 175
 176 struct nfs_seqid;
 177
 178 /* nfs41 sessions channel attributes */
 179 struct nfs4_channel_attrs {
 180         u32                     max_rqst_sz;
 181         u32                     max_resp_sz;
 182         u32                     max_resp_sz_cached;
 183         u32                     max_ops;
 184         u32                     max_reqs;
 185 };
 186
 187 struct nfs4_slot;
 188 struct nfs4_sequence_args {
 189         struct nfs4_slot        *sa_slot;
 190         u8                      sa_cache_this : 1,
 191                                 sa_privileged : 1;
 192 };
 193
 194 struct nfs4_sequence_res {
 195         struct nfs4_slot        *sr_slot;       /* slot used to send request */
 196         unsigned long           sr_timestamp;
 197         int                     sr_status;      /* sequence operation status */
 198         u32                     sr_status_flags;
 199         u32                     sr_highest_slotid;
 200         u32                     sr_target_highest_slotid;
 201 };
 202
 203 struct nfs4_get_lease_time_args {
 204         struct nfs4_sequence_args       la_seq_args;
 205 };
 206
 207 struct nfs4_get_lease_time_res {
 208         struct nfs4_sequence_res        lr_seq_res;
 209         struct nfs_fsinfo              *lr_fsinfo;
 210 };
 211
 212 #define PNFS_LAYOUT_MAXSIZE 4096
 213
 214 struct nfs4_layoutdriver_data {
 215         struct page **pages;
 216         __u32 pglen;
 217         __u32 len;
 218 };
 219
 220 struct pnfs_layout_range {
 221         u32 iomode;
 222         u64 offset;
 223         u64 length;
 224 };
 225
 226 struct nfs4_layoutget_args {
 227         struct nfs4_sequence_args seq_args;
 228         __u32 type;
 229         struct pnfs_layout_range range;
 230         __u64 minlength;
 231         __u32 maxcount;
 232         struct inode *inode;
 233         struct nfs_open_context *ctx;
 234         nfs4_stateid stateid;
 235         unsigned long timestamp;
 236         struct nfs4_layoutdriver_data layout;
 237 };
 238
 239 struct nfs4_layoutget_res {
 240         struct nfs4_sequence_res seq_res;
 241         __u32 return_on_close;
 242         struct pnfs_layout_range range;
 243         __u32 type;
 244         nfs4_stateid stateid;
 245         struct nfs4_layoutdriver_data *layoutp;
 246 };
 247
 248 struct nfs4_layoutget {
 249         struct nfs4_layoutget_args args;
 250         struct nfs4_layoutget_res res;
 251         struct rpc_cred *cred;
 252         gfp_t gfp_flags;
 253 };
 254
 255 struct nfs4_getdeviceinfo_args {
 256         struct nfs4_sequence_args seq_args;
 257         struct pnfs_device *pdev;
 258 };
 259
 260 struct nfs4_getdeviceinfo_res {
 261         struct nfs4_sequence_res seq_res;
 262         struct pnfs_device *pdev;
 263 };
 264
 265 struct nfs4_layoutcommit_args {
 266         struct nfs4_sequence_args seq_args;
 267         nfs4_stateid stateid;
 268         __u64 lastbytewritten;
 269         struct inode *inode;
 270         const u32 *bitmask;
 271         size_t layoutupdate_len;
 272         struct page *layoutupdate_page;
 273         struct page **layoutupdate_pages;
 274 };
 275
 276 struct nfs4_layoutcommit_res {
 277         struct nfs4_sequence_res seq_res;
 278         struct nfs_fattr *fattr;
 279         const struct nfs_server *server;
 280         int status;
 281 };
 282
 283 struct nfs4_layoutcommit_data {
 284         struct rpc_task task;
 285         struct nfs_fattr fattr;
 286         struct list_head lseg_list;
 287         struct rpc_cred *cred;
 288         struct nfs4_layoutcommit_args args;
 289         struct nfs4_layoutcommit_res res;
 290 };
 291
 292 struct nfs4_layoutreturn_args {
 293         struct nfs4_sequence_args seq_args;
 294         struct pnfs_layout_hdr *layout;
 295         struct inode *inode;
 296         nfs4_stateid stateid;
 297         __u32   layout_type;
 298 };
 299
 300 struct nfs4_layoutreturn_res {
 301         struct nfs4_sequence_res seq_res;
 302         u32 lrs_present;
 303         nfs4_stateid stateid;
 304 };
 305
 306 struct nfs4_layoutreturn {
 307         struct nfs4_layoutreturn_args args;
 308         struct nfs4_layoutreturn_res res;
 309         struct rpc_cred *cred;
 310         struct nfs_client *clp;
 311         int rpc_status;
 312 };
 313
 314 struct stateowner_id {
 315         __u64   create_time;
 316         __u32   uniquifier;
 317 };
 318
 319 /*
 320  * Arguments to the open call.
 321  */
 322 struct nfs_openargs {
 323         struct nfs4_sequence_args       seq_args;
 324         const struct nfs_fh *   fh;
 325         struct nfs_seqid *      seqid;
 326         int                     open_flags;
 327         fmode_t                 fmode;
 328         u32                     access;
 329         __u64                   clientid;
 330         struct stateowner_id    id;
 331         union {
 332                 struct {
 333                         struct iattr *  attrs;    /* UNCHECKED, GUARDED */
 334                         nfs4_verifier   verifier; /* EXCLUSIVE */
 335                 };
 336                 nfs4_stateid    delegation;             /* CLAIM_DELEGATE_CUR */
 337                 fmode_t         delegation_type;        /* CLAIM_PREVIOUS */
 338         } u;
 339         const struct qstr *     name;
 340         const struct nfs_server *server;         /* Needed for ID mapping */
 341         const u32 *             bitmask;
 342         const u32 *             open_bitmap;
 343         __u32                   claim;
 344         enum createmode4        createmode;
 345         const struct nfs4_label *label;
 346 };
 347
 348 struct nfs_openres {
 349         struct nfs4_sequence_res        seq_res;
 350         nfs4_stateid            stateid;
 351         struct nfs_fh           fh;
 352         struct nfs4_change_info cinfo;
 353         __u32                   rflags;
 354         struct nfs_fattr *      f_attr;
 355         struct nfs4_label       *f_label;
 356         struct nfs_seqid *      seqid;
 357         const struct nfs_server *server;
 358         fmode_t                 delegation_type;
 359         nfs4_stateid            delegation;
 360         __u32                   do_recall;
 361         __u64                   maxsize;
 362         __u32                   attrset[NFS4_BITMAP_SIZE];
 363         struct nfs4_string      *owner;
 364         struct nfs4_string      *group_owner;
 365         __u32                   access_request;
 366         __u32                   access_supported;
 367         __u32                   access_result;
 368 };
 369
 370 /*
 371  * Arguments to the open_confirm call.
 372  */
 373 struct nfs_open_confirmargs {
 374         struct nfs4_sequence_args       seq_args;
 375         const struct nfs_fh *   fh;
 376         nfs4_stateid *          stateid;
 377         struct nfs_seqid *      seqid;
 378 };
 379
 380 struct nfs_open_confirmres {
 381         struct nfs4_sequence_res        seq_res;
 382         nfs4_stateid            stateid;
 383         struct nfs_seqid *      seqid;
 384 };
 385
 386 /*
 387  * Arguments to the close call.
 388  */
 389 struct nfs_closeargs {
 390         struct nfs4_sequence_args       seq_args;
 391         struct nfs_fh *         fh;
 392         nfs4_stateid            stateid;
 393         struct nfs_seqid *      seqid;
 394         fmode_t                 fmode;
 395         const u32 *             bitmask;
 396 };
 397
 398 struct nfs_closeres {
 399         struct nfs4_sequence_res        seq_res;
 400         nfs4_stateid            stateid;
 401         struct nfs_fattr *      fattr;
 402         struct nfs_seqid *      seqid;
 403         const struct nfs_server *server;
 404 };
 405 /*
 406  *  * Arguments to the lock,lockt, and locku call.
 407  *   */
 408 struct nfs_lowner {
 409         __u64                   clientid;
 410         __u64                   id;
 411         dev_t                   s_dev;
 412 };
 413
 414 struct nfs_lock_args {
 415         struct nfs4_sequence_args       seq_args;
 416         struct nfs_fh *         fh;
 417         struct file_lock *      fl;
 418         struct nfs_seqid *      lock_seqid;
 419         nfs4_stateid            lock_stateid;
 420         struct nfs_seqid *      open_seqid;
 421         nfs4_stateid            open_stateid;
 422         struct nfs_lowner       lock_owner;
 423         unsigned char           block : 1;
 424         unsigned char           reclaim : 1;
 425         unsigned char           new_lock : 1;
 426         unsigned char           new_lock_owner : 1;
 427 };
 428
 429 struct nfs_lock_res {
 430         struct nfs4_sequence_res        seq_res;
 431         nfs4_stateid            stateid;
 432         struct nfs_seqid *      lock_seqid;
 433         struct nfs_seqid *      open_seqid;
 434 };
 435
 436 struct nfs_locku_args {
 437         struct nfs4_sequence_args       seq_args;
 438         struct nfs_fh *         fh;
 439         struct file_lock *      fl;
 440         struct nfs_seqid *      seqid;
 441         nfs4_stateid            stateid;
 442 };
 443
 444 struct nfs_locku_res {
 445         struct nfs4_sequence_res        seq_res;
 446         nfs4_stateid            stateid;
 447         struct nfs_seqid *      seqid;
 448 };
 449
 450 struct nfs_lockt_args {
 451         struct nfs4_sequence_args       seq_args;
 452         struct nfs_fh *         fh;
 453         struct file_lock *      fl;
 454         struct nfs_lowner       lock_owner;
 455 };
 456
 457 struct nfs_lockt_res {
 458         struct nfs4_sequence_res        seq_res;
 459         struct file_lock *      denied; /* LOCK, LOCKT failed */
 460 };
 461
 462 struct nfs_release_lockowner_args {
 463         struct nfs4_sequence_args       seq_args;
 464         struct nfs_lowner       lock_owner;
 465 };
 466
 467 struct nfs_release_lockowner_res {
 468         struct nfs4_sequence_res        seq_res;
 469 };
 470
 471 struct nfs4_delegreturnargs {
 472         struct nfs4_sequence_args       seq_args;
 473         const struct nfs_fh *fhandle;
 474         const nfs4_stateid *stateid;
 475         const u32 * bitmask;
 476 };
 477
 478 struct nfs4_delegreturnres {
 479         struct nfs4_sequence_res        seq_res;
 480         struct nfs_fattr * fattr;
 481         const struct nfs_server *server;
 482 };
 483
 484 /*
 485  * Arguments to the write call.
 486  */
 487 struct nfs_write_verifier {
 488         char                    data[8];
 489 };
 490
 491 struct nfs_writeverf {
 492         struct nfs_write_verifier verifier;
 493         enum nfs3_stable_how    committed;
 494 };
 495
 496 /*
 497  * Arguments shared by the read and write call.
 498  */
 499 struct nfs_pgio_args {
 500         struct nfs4_sequence_args       seq_args;
 501         struct nfs_fh *         fh;
 502         struct nfs_open_context *context;
 503         struct nfs_lock_context *lock_context;
 504         nfs4_stateid            stateid;
 505         __u64                   offset;
 506         __u32                   count;
 507         unsigned int            pgbase;
 508         struct page **          pages;
 509         const u32 *             bitmask;        /* used by write */
 510         enum nfs3_stable_how    stable;         /* used by write */
 511 };
 512
 513 struct nfs_pgio_res {
 514         struct nfs4_sequence_res        seq_res;
 515         struct nfs_fattr *      fattr;
 516         __u32                   count;
 517         int                     eof;            /* used by read */
 518         struct nfs_writeverf *  verf;           /* used by write */
 519         const struct nfs_server *server;        /* used by write */
 520
 521 };
 522
 523 /*
 524  * Arguments to the commit call.
 525  */
 526 struct nfs_commitargs {
 527         struct nfs4_sequence_args       seq_args;
 528         struct nfs_fh           *fh;
 529         __u64                   offset;
 530         __u32                   count;
 531         const u32               *bitmask;
 532 };
 533
 534 struct nfs_commitres {
 535         struct nfs4_sequence_res        seq_res;
 536         struct nfs_fattr        *fattr;
 537         struct nfs_writeverf    *verf;
 538         const struct nfs_server *server;
 539 };
 540
 541 /*
 542  * Common arguments to the unlink call
 543  */
 544 struct nfs_removeargs {
 545         struct nfs4_sequence_args       seq_args;
 546         const struct nfs_fh     *fh;
 547         struct qstr             name;
 548 };
 549
 550 struct nfs_removeres {
 551         struct nfs4_sequence_res        seq_res;
 552         const struct nfs_server *server;
 553         struct nfs_fattr        *dir_attr;
 554         struct nfs4_change_info cinfo;
 555 };
 556
 557 /*
 558  * Common arguments to the rename call
 559  */
 560 struct nfs_renameargs {
 561         struct nfs4_sequence_args       seq_args;
 562         const struct nfs_fh             *old_dir;
 563         const struct nfs_fh             *new_dir;
 564         const struct qstr               *old_name;
 565         const struct qstr               *new_name;
 566 };
 567
 568 struct nfs_renameres {
 569         struct nfs4_sequence_res        seq_res;
 570         const struct nfs_server         *server;
 571         struct nfs4_change_info         old_cinfo;
 572         struct nfs_fattr                *old_fattr;
 573         struct nfs4_change_info         new_cinfo;
 574         struct nfs_fattr                *new_fattr;
 575 };
 576
 577 /* parsed sec= options */
 578 #define NFS_AUTH_INFO_MAX_FLAVORS 12 /* see fs/nfs/super.c */
 579 struct nfs_auth_info {
 580         unsigned int            flavor_len;
 581         rpc_authflavor_t        flavors[NFS_AUTH_INFO_MAX_FLAVORS];
 582 };
 583
 584 /*
 585  * Argument struct for decode_entry function
 586  */
 587 struct nfs_entry {
 588         __u64                   ino;
 589         __u64                   cookie,
 590                                 prev_cookie;
 591         const char *            name;
 592         unsigned int            len;
 593         int                     eof;
 594         struct nfs_fh *         fh;
 595         struct nfs_fattr *      fattr;
 596         struct nfs4_label  *label;
 597         unsigned char           d_type;
 598         struct nfs_server *     server;
 599 };
 600
 601 /*
 602  * The following types are for NFSv2 only.
 603  */
 604 struct nfs_sattrargs {
 605         struct nfs_fh *         fh;
 606         struct iattr *          sattr;
 607 };
 608
 609 struct nfs_diropargs {
 610         struct nfs_fh *         fh;
 611         const char *            name;
 612         unsigned int            len;
 613 };
 614
 615 struct nfs_createargs {
 616         struct nfs_fh *         fh;
 617         const char *            name;
 618         unsigned int            len;
 619         struct iattr *          sattr;
 620 };
 621
 622 struct nfs_setattrargs {
 623         struct nfs4_sequence_args       seq_args;
 624         struct nfs_fh *                 fh;
 625         nfs4_stateid                    stateid;
 626         struct iattr *                  iap;
 627         const struct nfs_server *       server; /* Needed for name mapping */
 628         const u32 *                     bitmask;
 629         const struct nfs4_label         *label;
 630 };
 631
 632 struct nfs_setaclargs {
 633         struct nfs4_sequence_args       seq_args;
 634         struct nfs_fh *                 fh;
 635         size_t                          acl_len;
 636         unsigned int                    acl_pgbase;
 637         struct page **                  acl_pages;
 638 };
 639
 640 struct nfs_setaclres {
 641         struct nfs4_sequence_res        seq_res;
 642 };
 643
 644 struct nfs_getaclargs {
 645         struct nfs4_sequence_args       seq_args;
 646         struct nfs_fh *                 fh;
 647         size_t                          acl_len;
 648         unsigned int                    acl_pgbase;
 649         struct page **                  acl_pages;
 650 };
 651
 652 /* getxattr ACL interface flags */
 653 #define NFS4_ACL_TRUNC          0x0001  /* ACL was truncated */
 654 struct nfs_getaclres {
 655         struct nfs4_sequence_res        seq_res;
 656         size_t                          acl_len;
 657         size_t                          acl_data_offset;
 658         int                             acl_flags;
 659         struct page *                   acl_scratch;
 660 };
 661
 662 struct nfs_setattrres {
 663         struct nfs4_sequence_res        seq_res;
 664         struct nfs_fattr *              fattr;
 665         struct nfs4_label               *label;
 666         const struct nfs_server *       server;
 667 };
 668
 669 struct nfs_linkargs {
 670         struct nfs_fh *         fromfh;
 671         struct nfs_fh *         tofh;
 672         const char *            toname;
 673         unsigned int            tolen;
 674 };
 675
 676 struct nfs_symlinkargs {
 677         struct nfs_fh *         fromfh;
 678         const char *            fromname;
 679         unsigned int            fromlen;
 680         struct page **          pages;
 681         unsigned int            pathlen;
 682         struct iattr *          sattr;
 683 };
 684
 685 struct nfs_readdirargs {
 686         struct nfs_fh *         fh;
 687         __u32                   cookie;
 688         unsigned int            count;
 689         struct page **          pages;
 690 };
 691
 692 struct nfs3_getaclargs {
 693         struct nfs_fh *         fh;
 694         int                     mask;
 695         struct page **          pages;
 696 };
 697
 698 struct nfs3_setaclargs {
 699         struct inode *          inode;
 700         int                     mask;
 701         struct posix_acl *      acl_access;
 702         struct posix_acl *      acl_default;
 703         size_t                  len;
 704         unsigned int            npages;
 705         struct page **          pages;
 706 };
 707
 708 struct nfs_diropok {
 709         struct nfs_fh *         fh;
 710         struct nfs_fattr *      fattr;
 711 };
 712
 713 struct nfs_readlinkargs {
 714         struct nfs_fh *         fh;
 715         unsigned int            pgbase;
 716         unsigned int            pglen;
 717         struct page **          pages;
 718 };
 719
 720 struct nfs3_sattrargs {
 721         struct nfs_fh *         fh;
 722         struct iattr *          sattr;
 723         unsigned int            guard;
 724         struct timespec         guardtime;
 725 };
 726
 727 struct nfs3_diropargs {
 728         struct nfs_fh *         fh;
 729         const char *            name;
 730         unsigned int            len;
 731 };
 732
 733 struct nfs3_accessargs {
 734         struct nfs_fh *         fh;
 735         __u32                   access;
 736 };
 737
 738 struct nfs3_createargs {
 739         struct nfs_fh *         fh;
 740         const char *            name;
 741         unsigned int            len;
 742         struct iattr *          sattr;
 743         enum nfs3_createmode    createmode;
 744         __be32                  verifier[2];
 745 };
 746
 747 struct nfs3_mkdirargs {
 748         struct nfs_fh *         fh;
 749         const char *            name;
 750         unsigned int            len;
 751         struct iattr *          sattr;
 752 };
 753
 754 struct nfs3_symlinkargs {
 755         struct nfs_fh *         fromfh;
 756         const char *            fromname;
 757         unsigned int            fromlen;
 758         struct page **          pages;
 759         unsigned int            pathlen;
 760         struct iattr *          sattr;
 761 };
 762
 763 struct nfs3_mknodargs {
 764         struct nfs_fh *         fh;
 765         const char *            name;
 766         unsigned int            len;
 767         enum nfs3_ftype         type;
 768         struct iattr *          sattr;
 769         dev_t                   rdev;
 770 };
 771
 772 struct nfs3_linkargs {
 773         struct nfs_fh *         fromfh;
 774         struct nfs_fh *         tofh;
 775         const char *            toname;
 776         unsigned int            tolen;
 777 };
 778
 779 struct nfs3_readdirargs {
 780         struct nfs_fh *         fh;
 781         __u64                   cookie;
 782         __be32                  verf[2];
 783         int                     plus;
 784         unsigned int            count;
 785         struct page **          pages;
 786 };
 787
 788 struct nfs3_diropres {
 789         struct nfs_fattr *      dir_attr;
 790         struct nfs_fh *         fh;
 791         struct nfs_fattr *      fattr;
 792 };
 793
 794 struct nfs3_accessres {
 795         struct nfs_fattr *      fattr;
 796         __u32                   access;
 797 };
 798
 799 struct nfs3_readlinkargs {
 800         struct nfs_fh *         fh;
 801         unsigned int            pgbase;
 802         unsigned int            pglen;
 803         struct page **          pages;
 804 };
 805
 806 struct nfs3_linkres {
 807         struct nfs_fattr *      dir_attr;
 808         struct nfs_fattr *      fattr;
 809 };
 810
 811 struct nfs3_readdirres {
 812         struct nfs_fattr *      dir_attr;
 813         __be32 *                verf;
 814         int                     plus;
 815 };
 816
 817 struct nfs3_getaclres {
 818         struct nfs_fattr *      fattr;
 819         int                     mask;
 820         unsigned int            acl_access_count;
 821         unsigned int            acl_default_count;
 822         struct posix_acl *      acl_access;
 823         struct posix_acl *      acl_default;
 824 };
 825
 826 #if IS_ENABLED(CONFIG_NFS_V4)
 827
 828 typedef u64 clientid4;
 829
 830 struct nfs4_accessargs {
 831         struct nfs4_sequence_args       seq_args;
 832         const struct nfs_fh *           fh;
 833         const u32 *                     bitmask;
 834         u32                             access;
 835 };
 836
 837 struct nfs4_accessres {
 838         struct nfs4_sequence_res        seq_res;
 839         const struct nfs_server *       server;
 840         struct nfs_fattr *              fattr;
 841         u32                             supported;
 842         u32                             access;
 843 };
 844
 845 struct nfs4_create_arg {
 846         struct nfs4_sequence_args       seq_args;
 847         u32                             ftype;
 848         union {
 849                 struct {
 850                         struct page **  pages;
 851                         unsigned int    len;
 852                 } symlink;   /* NF4LNK */
 853                 struct {
 854                         u32             specdata1;
 855                         u32             specdata2;
 856                 } device;    /* NF4BLK, NF4CHR */
 857         } u;
 858         const struct qstr *             name;
 859         const struct nfs_server *       server;
 860         const struct iattr *            attrs;
 861         const struct nfs_fh *           dir_fh;
 862         const u32 *                     bitmask;
 863         const struct nfs4_label         *label;
 864 };
 865
 866 struct nfs4_create_res {
 867         struct nfs4_sequence_res        seq_res;
 868         const struct nfs_server *       server;
 869         struct nfs_fh *                 fh;
 870         struct nfs_fattr *              fattr;
 871         struct nfs4_label               *label;
 872         struct nfs4_change_info         dir_cinfo;
 873 };
 874
 875 struct nfs4_fsinfo_arg {
 876         struct nfs4_sequence_args       seq_args;
 877         const struct nfs_fh *           fh;
 878         const u32 *                     bitmask;
 879 };
 880
 881 struct nfs4_fsinfo_res {
 882         struct nfs4_sequence_res        seq_res;
 883         struct nfs_fsinfo              *fsinfo;
 884 };
 885
 886 struct nfs4_getattr_arg {
 887         struct nfs4_sequence_args       seq_args;
 888         const struct nfs_fh *           fh;
 889         const u32 *                     bitmask;
 890 };
 891
 892 struct nfs4_getattr_res {
 893         struct nfs4_sequence_res        seq_res;
 894         const struct nfs_server *       server;
 895         struct nfs_fattr *              fattr;
 896         struct nfs4_label               *label;
 897 };
 898
 899 struct nfs4_link_arg {
 900         struct nfs4_sequence_args       seq_args;
 901         const struct nfs_fh *           fh;
 902         const struct nfs_fh *           dir_fh;
 903         const struct qstr *             name;
 904         const u32 *                     bitmask;
 905 };
 906
 907 struct nfs4_link_res {
 908         struct nfs4_sequence_res        seq_res;
 909         const struct nfs_server *       server;
 910         struct nfs_fattr *              fattr;
 911         struct nfs4_label               *label;
 912         struct nfs4_change_info         cinfo;
 913         struct nfs_fattr *              dir_attr;
 914 };
 915
 916
 917 struct nfs4_lookup_arg {
 918         struct nfs4_sequence_args       seq_args;
 919         const struct nfs_fh *           dir_fh;
 920         const struct qstr *             name;
 921         const u32 *                     bitmask;
 922 };
 923
 924 struct nfs4_lookup_res {
 925         struct nfs4_sequence_res        seq_res;
 926         const struct nfs_server *       server;
 927         struct nfs_fattr *              fattr;
 928         struct nfs_fh *                 fh;
 929         struct nfs4_label               *label;
 930 };
 931
 932 struct nfs4_lookup_root_arg {
 933         struct nfs4_sequence_args       seq_args;
 934         const u32 *                     bitmask;
 935 };
 936
 937 struct nfs4_pathconf_arg {
 938         struct nfs4_sequence_args       seq_args;
 939         const struct nfs_fh *           fh;
 940         const u32 *                     bitmask;
 941 };
 942
 943 struct nfs4_pathconf_res {
 944         struct nfs4_sequence_res        seq_res;
 945         struct nfs_pathconf            *pathconf;
 946 };
 947
 948 struct nfs4_readdir_arg {
 949         struct nfs4_sequence_args       seq_args;
 950         const struct nfs_fh *           fh;
 951         u64                             cookie;
 952         nfs4_verifier                   verifier;
 953         u32                             count;
 954         struct page **                  pages;  /* zero-copy data */
 955         unsigned int                    pgbase; /* zero-copy data */
 956         const u32 *                     bitmask;
 957         int                             plus;
 958 };
 959
 960 struct nfs4_readdir_res {
 961         struct nfs4_sequence_res        seq_res;
 962         nfs4_verifier                   verifier;
 963         unsigned int                    pgbase;
 964 };
 965
 966 struct nfs4_readlink {
 967         struct nfs4_sequence_args       seq_args;
 968         const struct nfs_fh *           fh;
 969         unsigned int                    pgbase;
 970         unsigned int                    pglen;   /* zero-copy data */
 971         struct page **                  pages;   /* zero-copy data */
 972 };
 973
 974 struct nfs4_readlink_res {
 975         struct nfs4_sequence_res        seq_res;
 976 };
 977
 978 #define NFS4_SETCLIENTID_NAMELEN        (127)
 979 struct nfs4_setclientid {
 980         const nfs4_verifier *           sc_verifier;
 981         unsigned int                    sc_name_len;
 982         char                            sc_name[NFS4_SETCLIENTID_NAMELEN + 1];
 983         u32                             sc_prog;
 984         unsigned int                    sc_netid_len;
 985         char                            sc_netid[RPCBIND_MAXNETIDLEN + 1];
 986         unsigned int                    sc_uaddr_len;
 987         char                            sc_uaddr[RPCBIND_MAXUADDRLEN + 1];
 988         u32                             sc_cb_ident;
 989         struct rpc_cred                 *sc_cred;
 990 };
 991
 992 struct nfs4_setclientid_res {
 993         u64                             clientid;
 994         nfs4_verifier                   confirm;
 995 };
 996
 997 struct nfs4_statfs_arg {
 998         struct nfs4_sequence_args       seq_args;
 999         const struct nfs_fh *           fh;
1000         const u32 *                     bitmask;
1001 };
1002
1003 struct nfs4_statfs_res {
1004         struct nfs4_sequence_res        seq_res;
1005         struct nfs_fsstat              *fsstat;
1006 };
1007
1008 struct nfs4_server_caps_arg {
1009         struct nfs4_sequence_args       seq_args;
1010         struct nfs_fh                  *fhandle;
1011 };
1012
1013 struct nfs4_server_caps_res {
1014         struct nfs4_sequence_res        seq_res;
1015         u32                             attr_bitmask[3];
1016         u32                             acl_bitmask;
1017         u32                             has_links;
1018         u32                             has_symlinks;
1019         u32                             fh_expire_type;
1020 };
1021
1022 #define NFS4_PATHNAME_MAXCOMPONENTS 512
1023 struct nfs4_pathname {
1024         unsigned int ncomponents;
1025         struct nfs4_string components[NFS4_PATHNAME_MAXCOMPONENTS];
1026 };
1027
1028 #define NFS4_FS_LOCATION_MAXSERVERS 10
1029 struct nfs4_fs_location {
1030         unsigned int nservers;
1031         struct nfs4_string servers[NFS4_FS_LOCATION_MAXSERVERS];
1032         struct nfs4_pathname rootpath;
1033 };
1034
1035 #define NFS4_FS_LOCATIONS_MAXENTRIES 10
1036 struct nfs4_fs_locations {
1037         struct nfs_fattr fattr;
1038         const struct nfs_server *server;
1039         struct nfs4_pathname fs_path;
1040         int nlocations;
1041         struct nfs4_fs_location locations[NFS4_FS_LOCATIONS_MAXENTRIES];
1042 };
1043
1044 struct nfs4_fs_locations_arg {
1045         struct nfs4_sequence_args       seq_args;
1046         const struct nfs_fh *dir_fh;
1047         const struct nfs_fh *fh;
1048         const struct qstr *name;
1049         struct page *page;
1050         const u32 *bitmask;
1051         clientid4 clientid;
1052         unsigned char migration:1, renew:1;
1053 };
1054
1055 struct nfs4_fs_locations_res {
1056         struct nfs4_sequence_res        seq_res;
1057         struct nfs4_fs_locations       *fs_locations;
1058         unsigned char                   migration:1, renew:1;
1059 };
1060
1061 struct nfs4_secinfo4 {
1062         u32                     flavor;
1063         struct rpcsec_gss_info  flavor_info;
1064 };
1065
1066 struct nfs4_secinfo_flavors {
1067         unsigned int            num_flavors;
1068         struct nfs4_secinfo4    flavors[0];
1069 };
1070
1071 struct nfs4_secinfo_arg {
1072         struct nfs4_sequence_args       seq_args;
1073         const struct nfs_fh             *dir_fh;
1074         const struct qstr               *name;
1075 };
1076
1077 struct nfs4_secinfo_res {
1078         struct nfs4_sequence_res        seq_res;
1079         struct nfs4_secinfo_flavors     *flavors;
1080 };
1081
1082 struct nfs4_fsid_present_arg {
1083         struct nfs4_sequence_args       seq_args;
1084         const struct nfs_fh             *fh;
1085         clientid4                       clientid;
1086         unsigned char                   renew:1;
1087 };
1088
1089 struct nfs4_fsid_present_res {
1090         struct nfs4_sequence_res        seq_res;
1091         struct nfs_fh                   *fh;
1092         unsigned char                   renew:1;
1093 };
1094
1095 #endif /* CONFIG_NFS_V4 */
1096
1097 struct nfstime4 {
1098         u64     seconds;
1099         u32     nseconds;
1100 };
1101
1102 #ifdef CONFIG_NFS_V4_1
1103
1104 struct pnfs_commit_bucket {
1105         struct list_head written;
1106         struct list_head committing;
1107         struct pnfs_layout_segment *wlseg;
1108         struct pnfs_layout_segment *clseg;
1109         struct nfs_writeverf direct_verf;
1110 };
1111
1112 struct pnfs_ds_commit_info {
1113         int nwritten;
1114         int ncommitting;
1115         int nbuckets;
1116         struct pnfs_commit_bucket *buckets;
1117 };
1118
1119 #define NFS4_OP_MAP_NUM_LONGS \
1120         DIV_ROUND_UP(LAST_NFS4_OP, 8 * sizeof(unsigned long))
1121 #define NFS4_OP_MAP_NUM_WORDS \
1122         (NFS4_OP_MAP_NUM_LONGS * sizeof(unsigned long) / sizeof(u32))
1123 struct nfs4_op_map {
1124         union {
1125                 unsigned long longs[NFS4_OP_MAP_NUM_LONGS];
1126                 u32 words[NFS4_OP_MAP_NUM_WORDS];
1127         } u;
1128 };
1129
1130 struct nfs41_state_protection {
1131         u32 how;
1132         struct nfs4_op_map enforce;
1133         struct nfs4_op_map allow;
1134 };
1135
1136 #define NFS4_EXCHANGE_ID_LEN    (48)
1137 struct nfs41_exchange_id_args {
1138         struct nfs_client               *client;
1139         nfs4_verifier                   *verifier;
1140         unsigned int                    id_len;
1141         char                            id[NFS4_EXCHANGE_ID_LEN];
1142         u32                             flags;
1143         struct nfs41_state_protection   state_protect;
1144 };
1145
1146 struct nfs41_server_owner {
1147         uint64_t                        minor_id;
1148         uint32_t                        major_id_sz;
1149         char                            major_id[NFS4_OPAQUE_LIMIT];
1150 };
1151
1152 struct nfs41_server_scope {
1153         uint32_t                        server_scope_sz;
1154         char                            server_scope[NFS4_OPAQUE_LIMIT];
1155 };
1156
1157 struct nfs41_impl_id {
1158         char                            domain[NFS4_OPAQUE_LIMIT + 1];
1159         char                            name[NFS4_OPAQUE_LIMIT + 1];
1160         struct nfstime4                 date;
1161 };
1162
1163 struct nfs41_bind_conn_to_session_res {
1164         struct nfs4_session             *session;
1165         u32                             dir;
1166         bool                            use_conn_in_rdma_mode;
1167 };
1168
1169 struct nfs41_exchange_id_res {
1170         u64                             clientid;
1171         u32                             seqid;
1172         u32                             flags;
1173         struct nfs41_server_owner       *server_owner;
1174         struct nfs41_server_scope       *server_scope;
1175         struct nfs41_impl_id            *impl_id;
1176         struct nfs41_state_protection   state_protect;
1177 };
1178
1179 struct nfs41_create_session_args {
1180         struct nfs_client              *client;
1181         uint32_t                        flags;
1182         uint32_t                        cb_program;
1183         struct nfs4_channel_attrs       fc_attrs;       /* Fore Channel */
1184         struct nfs4_channel_attrs       bc_attrs;       /* Back Channel */
1185 };
1186
1187 struct nfs41_create_session_res {
1188         struct nfs_client              *client;
1189 };
1190
1191 struct nfs41_reclaim_complete_args {
1192         struct nfs4_sequence_args       seq_args;
1193         /* In the future extend to include curr_fh for use with migration */
1194         unsigned char                   one_fs:1;
1195 };
1196
1197 struct nfs41_reclaim_complete_res {
1198         struct nfs4_sequence_res        seq_res;
1199 };
1200
1201 #define SECINFO_STYLE_CURRENT_FH 0
1202 #define SECINFO_STYLE_PARENT 1
1203 struct nfs41_secinfo_no_name_args {
1204         struct nfs4_sequence_args       seq_args;
1205         int                             style;
1206 };
1207
1208 struct nfs41_test_stateid_args {
1209         struct nfs4_sequence_args       seq_args;
1210         nfs4_stateid                    *stateid;
1211 };
1212
1213 struct nfs41_test_stateid_res {
1214         struct nfs4_sequence_res        seq_res;
1215         unsigned int                    status;
1216 };
1217
1218 struct nfs41_free_stateid_args {
1219         struct nfs4_sequence_args       seq_args;
1220         nfs4_stateid                    stateid;
1221 };
1222
1223 struct nfs41_free_stateid_res {
1224         struct nfs4_sequence_res        seq_res;
1225         unsigned int                    status;
1226 };
1227
1228 static inline void
1229 nfs_free_pnfs_ds_cinfo(struct pnfs_ds_commit_info *cinfo)
1230 {
1231         kfree(cinfo->buckets);
1232 }
1233
1234 #else
1235
1236 struct pnfs_ds_commit_info {
1237 };
1238
1239 static inline void
1240 nfs_free_pnfs_ds_cinfo(struct pnfs_ds_commit_info *cinfo)
1241 {
1242 }
1243
1244 #endif /* CONFIG_NFS_V4_1 */
1245
1246 #ifdef CONFIG_NFS_V4_2
1247 struct nfs42_falloc_args {
1248         struct nfs4_sequence_args       seq_args;
1249
1250         struct nfs_fh                   *falloc_fh;
1251         nfs4_stateid                     falloc_stateid;
1252         u64                              falloc_offset;
1253         u64                              falloc_length;
1254 };
1255
1256 struct nfs42_falloc_res {
1257         struct nfs4_sequence_res        seq_res;
1258         unsigned int                    status;
1259 };
1260
1261 struct nfs42_seek_args {
1262         struct nfs4_sequence_args       seq_args;
1263
1264         struct nfs_fh                   *sa_fh;
1265         nfs4_stateid                    sa_stateid;
1266         u64                             sa_offset;
1267         u32                             sa_what;
1268 };
1269
1270 struct nfs42_seek_res {
1271         struct nfs4_sequence_res        seq_res;
1272         unsigned int                    status;
1273
1274         u32     sr_eof;
1275         u64     sr_offset;
1276 };
1277 #endif
1278
1279 struct nfs_page;
1280
1281 #define NFS_PAGEVEC_SIZE        (8U)
1282
1283 struct nfs_page_array {
1284         struct page             **pagevec;
1285         unsigned int            npages;         /* Max length of pagevec */
1286         struct page             *page_array[NFS_PAGEVEC_SIZE];
1287 };
1288
1289 /* used as flag bits in nfs_pgio_header */
1290 enum {
1291         NFS_IOHDR_ERROR = 0,
1292         NFS_IOHDR_EOF,
1293         NFS_IOHDR_REDO,
1294 };
1295
1296 struct nfs_pgio_header {
1297         struct inode            *inode;
1298         struct rpc_cred         *cred;
1299         struct list_head        pages;
1300         struct nfs_page         *req;
1301         struct nfs_writeverf    verf;           /* Used for writes */
1302         struct pnfs_layout_segment *lseg;
1303         loff_t                  io_start;
1304         const struct rpc_call_ops *mds_ops;
1305         void (*release) (struct nfs_pgio_header *hdr);
1306         const struct nfs_pgio_completion_ops *completion_ops;
1307         const struct nfs_rw_ops *rw_ops;
1308         struct nfs_direct_req   *dreq;
1309         void                    *layout_private;
1310         spinlock_t              lock;
1311         /* fields protected by lock */
1312         int                     pnfs_error;
1313         int                     error;          /* merge with pnfs_error */
1314         unsigned long           good_bytes;     /* boundary of good data */
1315         unsigned long           flags;
1316
1317         /*
1318          * rpc data
1319          */
1320         struct rpc_task         task;
1321         struct nfs_fattr        fattr;
1322         struct nfs_pgio_args    args;           /* argument struct */
1323         struct nfs_pgio_res     res;            /* result struct */
1324         unsigned long           timestamp;      /* For lease renewal */
1325         int (*pgio_done_cb)(struct rpc_task *, struct nfs_pgio_header *);
1326         __u64                   mds_offset;     /* Filelayout dense stripe */
1327         struct nfs_page_array   page_array;
1328         struct nfs_client       *ds_clp;        /* pNFS data server */
1329         int                     ds_idx;         /* ds index if ds_clp is set */
1330 };
1331
1332 struct nfs_mds_commit_info {
1333         atomic_t rpcs_out;
1334         unsigned long           ncommit;
1335         struct list_head        list;
1336 };
1337
1338 struct nfs_commit_data;
1339 struct nfs_inode;
1340 struct nfs_commit_completion_ops {
1341         void (*error_cleanup) (struct nfs_inode *nfsi);
1342         void (*completion) (struct nfs_commit_data *data);
1343 };
1344
1345 struct nfs_commit_info {
1346         spinlock_t                      *lock;
1347         struct nfs_mds_commit_info      *mds;
1348         struct pnfs_ds_commit_info      *ds;
1349         struct nfs_direct_req           *dreq;  /* O_DIRECT request */
1350         const struct nfs_commit_completion_ops *completion_ops;
1351 };
1352
1353 struct nfs_commit_data {
1354         struct rpc_task         task;
1355         struct inode            *inode;
1356         struct rpc_cred         *cred;
1357         struct nfs_fattr        fattr;
1358         struct nfs_writeverf    verf;
1359         struct list_head        pages;          /* Coalesced requests we wish to flush */
1360         struct list_head        list;           /* lists of struct nfs_write_data */
1361         struct nfs_direct_req   *dreq;          /* O_DIRECT request */
1362         struct nfs_commitargs   args;           /* argument struct */
1363         struct nfs_commitres    res;            /* result struct */
1364         struct nfs_open_context *context;
1365         struct pnfs_layout_segment *lseg;
1366         struct nfs_client       *ds_clp;        /* pNFS data server */
1367         int                     ds_commit_index;
1368         loff_t                  lwb;
1369         const struct rpc_call_ops *mds_ops;
1370         const struct nfs_commit_completion_ops *completion_ops;
1371         int (*commit_done_cb) (struct rpc_task *task, struct nfs_commit_data *data);
1372 };
1373
1374 struct nfs_pgio_completion_ops {
1375         void    (*error_cleanup)(struct list_head *head);
1376         void    (*init_hdr)(struct nfs_pgio_header *hdr);
1377         void    (*completion)(struct nfs_pgio_header *hdr);
1378 };
1379
1380 struct nfs_unlinkdata {
1381         struct hlist_node list;
1382         struct nfs_removeargs args;
1383         struct nfs_removeres res;
1384         struct inode *dir;
1385         struct rpc_cred *cred;
1386         struct nfs_fattr dir_attr;
1387         long timeout;
1388 };
1389
1390 struct nfs_renamedata {
1391         struct nfs_renameargs   args;
1392         struct nfs_renameres    res;
1393         struct rpc_cred         *cred;
1394         struct inode            *old_dir;
1395         struct dentry           *old_dentry;
1396         struct nfs_fattr        old_fattr;
1397         struct inode            *new_dir;
1398         struct dentry           *new_dentry;
1399         struct nfs_fattr        new_fattr;
1400         void (*complete)(struct rpc_task *, struct nfs_renamedata *);
1401         long timeout;
1402 };
1403
1404 struct nfs_access_entry;
1405 struct nfs_client;
1406 struct rpc_timeout;
1407 struct nfs_subversion;
1408 struct nfs_mount_info;
1409 struct nfs_client_initdata;
1410 struct nfs_pageio_descriptor;
1411
1412 /*
1413  * RPC procedure vector for NFSv2/NFSv3 demuxing
1414  */
1415 struct nfs_rpc_ops {
1416         u32     version;                /* Protocol version */
1417         const struct dentry_operations *dentry_ops;
1418         const struct inode_operations *dir_inode_ops;
1419         const struct inode_operations *file_inode_ops;
1420         const struct file_operations *file_ops;
1421
1422         int     (*getroot) (struct nfs_server *, struct nfs_fh *,
1423                             struct nfs_fsinfo *);
1424         struct vfsmount *(*submount) (struct nfs_server *, struct dentry *,
1425                                       struct nfs_fh *, struct nfs_fattr *);
1426         struct dentry *(*try_mount) (int, const char *, struct nfs_mount_info *,
1427                                      struct nfs_subversion *);
1428         int     (*getattr) (struct nfs_server *, struct nfs_fh *,
1429                             struct nfs_fattr *, struct nfs4_label *);
1430         int     (*setattr) (struct dentry *, struct nfs_fattr *,
1431                             struct iattr *);
1432         int     (*lookup)  (struct inode *, struct qstr *,
1433                             struct nfs_fh *, struct nfs_fattr *,
1434                             struct nfs4_label *);
1435         int     (*access)  (struct inode *, struct nfs_access_entry *);
1436         int     (*readlink)(struct inode *, struct page *, unsigned int,
1437                             unsigned int);
1438         int     (*create)  (struct inode *, struct dentry *,
1439                             struct iattr *, int);
1440         int     (*remove)  (struct inode *, struct qstr *);
1441         void    (*unlink_setup)  (struct rpc_message *, struct inode *dir);
1442         void    (*unlink_rpc_prepare) (struct rpc_task *, struct nfs_unlinkdata *);
1443         int     (*unlink_done) (struct rpc_task *, struct inode *);
1444         void    (*rename_setup)  (struct rpc_message *msg, struct inode *dir);
1445         void    (*rename_rpc_prepare)(struct rpc_task *task, struct nfs_renamedata *);
1446         int     (*rename_done) (struct rpc_task *task, struct inode *old_dir, struct inode *new_dir);
1447         int     (*link)    (struct inode *, struct inode *, struct qstr *);
1448         int     (*symlink) (struct inode *, struct dentry *, struct page *,
1449                             unsigned int, struct iattr *);
1450         int     (*mkdir)   (struct inode *, struct dentry *, struct iattr *);
1451         int     (*rmdir)   (struct inode *, struct qstr *);
1452         int     (*readdir) (struct dentry *, struct rpc_cred *,
1453                             u64, struct page **, unsigned int, int);
1454         int     (*mknod)   (struct inode *, struct dentry *, struct iattr *,
1455                             dev_t);
1456         int     (*statfs)  (struct nfs_server *, struct nfs_fh *,
1457                             struct nfs_fsstat *);
1458         int     (*fsinfo)  (struct nfs_server *, struct nfs_fh *,
1459                             struct nfs_fsinfo *);
1460         int     (*pathconf) (struct nfs_server *, struct nfs_fh *,
1461                              struct nfs_pathconf *);
1462         int     (*set_capabilities)(struct nfs_server *, struct nfs_fh *);
1463         int     (*decode_dirent)(struct xdr_stream *, struct nfs_entry *, int);
1464         int     (*pgio_rpc_prepare)(struct rpc_task *,
1465                                     struct nfs_pgio_header *);
1466         void    (*read_setup)(struct nfs_pgio_header *, struct rpc_message *);
1467         int     (*read_done)(struct rpc_task *, struct nfs_pgio_header *);
1468         void    (*write_setup)(struct nfs_pgio_header *, struct rpc_message *);
1469         int     (*write_done)(struct rpc_task *, struct nfs_pgio_header *);
1470         void    (*commit_setup) (struct nfs_commit_data *, struct rpc_message *);
1471         void    (*commit_rpc_prepare)(struct rpc_task *, struct nfs_commit_data *);
1472         int     (*commit_done) (struct rpc_task *, struct nfs_commit_data *);
1473         int     (*lock)(struct file *, int, struct file_lock *);
1474         int     (*lock_check_bounds)(const struct file_lock *);
1475         void    (*clear_acl_cache)(struct inode *);
1476         void    (*close_context)(struct nfs_open_context *ctx, int);
1477         struct inode * (*open_context) (struct inode *dir,
1478                                 struct nfs_open_context *ctx,
1479                                 int open_flags,
1480                                 struct iattr *iattr,
1481                                 int *);
1482         int (*have_delegation)(struct inode *, fmode_t);
1483         int (*return_delegation)(struct inode *);
1484         struct nfs_client *(*alloc_client) (const struct nfs_client_initdata *);
1485         struct nfs_client *
1486                 (*init_client) (struct nfs_client *, const struct rpc_timeout *,
1487                                 const char *);
1488         void    (*free_client) (struct nfs_client *);
1489         struct nfs_server *(*create_server)(struct nfs_mount_info *, struct nfs_subversion *);
1490         struct nfs_server *(*clone_server)(struct nfs_server *, struct nfs_fh *,
1491                                            struct nfs_fattr *, rpc_authflavor_t);
1492 };
1493
1494 /*
1495  *      NFS_CALL(getattr, inode, (fattr));
1496  * into
1497  *      NFS_PROTO(inode)->getattr(fattr);
1498  */
1499 #define NFS_CALL(op, inode, args)       NFS_PROTO(inode)->op args
1500
1501 /*
1502  * Function vectors etc. for the NFS client
1503  */
1504 extern const struct nfs_rpc_ops nfs_v2_clientops;
1505 extern const struct nfs_rpc_ops nfs_v3_clientops;
1506 extern const struct nfs_rpc_ops nfs_v4_clientops;
1507 extern const struct rpc_version nfs_version2;
1508 extern const struct rpc_version nfs_version3;
1509 extern const struct rpc_version nfs_version4;
1510
1511 extern const struct rpc_version nfsacl_version3;
1512 extern const struct rpc_program nfsacl_program;
1513
1514 #endif