linux/include/linux/nfs_xdr.h
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   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/* Forward declaration for NFS v3 */
  18struct nfs4_secinfo_flavors;
  19
  20struct nfs4_string {
  21        unsigned int len;
  22        char *data;
  23};
  24
  25struct nfs_fsid {
  26        uint64_t                major;
  27        uint64_t                minor;
  28};
  29
  30/*
  31 * Helper for checking equality between 2 fsids.
  32 */
  33static inline int nfs_fsid_equal(const struct nfs_fsid *a, const struct nfs_fsid *b)
  34{
  35        return a->major == b->major && a->minor == b->minor;
  36}
  37
  38struct nfs4_threshold {
  39        __u32   bm;
  40        __u32   l_type;
  41        __u64   rd_sz;
  42        __u64   wr_sz;
  43        __u64   rd_io_sz;
  44        __u64   wr_io_sz;
  45};
  46
  47struct nfs_fattr {
  48        unsigned int            valid;          /* which fields are valid */
  49        umode_t                 mode;
  50        __u32                   nlink;
  51        __u32                   uid;
  52        __u32                   gid;
  53        dev_t                   rdev;
  54        __u64                   size;
  55        union {
  56                struct {
  57                        __u32   blocksize;
  58                        __u32   blocks;
  59                } nfs2;
  60                struct {
  61                        __u64   used;
  62                } nfs3;
  63        } du;
  64        struct nfs_fsid         fsid;
  65        __u64                   fileid;
  66        __u64                   mounted_on_fileid;
  67        struct timespec         atime;
  68        struct timespec         mtime;
  69        struct timespec         ctime;
  70        __u64                   change_attr;    /* NFSv4 change attribute */
  71        __u64                   pre_change_attr;/* pre-op NFSv4 change attribute */
  72        __u64                   pre_size;       /* pre_op_attr.size       */
  73        struct timespec         pre_mtime;      /* pre_op_attr.mtime      */
  74        struct timespec         pre_ctime;      /* pre_op_attr.ctime      */
  75        unsigned long           time_start;
  76        unsigned long           gencount;
  77        struct nfs4_string      *owner_name;
  78        struct nfs4_string      *group_name;
  79        struct nfs4_threshold   *mdsthreshold;  /* pNFS threshold hints */
  80};
  81
  82#define NFS_ATTR_FATTR_TYPE             (1U << 0)
  83#define NFS_ATTR_FATTR_MODE             (1U << 1)
  84#define NFS_ATTR_FATTR_NLINK            (1U << 2)
  85#define NFS_ATTR_FATTR_OWNER            (1U << 3)
  86#define NFS_ATTR_FATTR_GROUP            (1U << 4)
  87#define NFS_ATTR_FATTR_RDEV             (1U << 5)
  88#define NFS_ATTR_FATTR_SIZE             (1U << 6)
  89#define NFS_ATTR_FATTR_PRESIZE          (1U << 7)
  90#define NFS_ATTR_FATTR_BLOCKS_USED      (1U << 8)
  91#define NFS_ATTR_FATTR_SPACE_USED       (1U << 9)
  92#define NFS_ATTR_FATTR_FSID             (1U << 10)
  93#define NFS_ATTR_FATTR_FILEID           (1U << 11)
  94#define NFS_ATTR_FATTR_ATIME            (1U << 12)
  95#define NFS_ATTR_FATTR_MTIME            (1U << 13)
  96#define NFS_ATTR_FATTR_CTIME            (1U << 14)
  97#define NFS_ATTR_FATTR_PREMTIME         (1U << 15)
  98#define NFS_ATTR_FATTR_PRECTIME         (1U << 16)
  99#define NFS_ATTR_FATTR_CHANGE           (1U << 17)
 100#define NFS_ATTR_FATTR_PRECHANGE        (1U << 18)
 101#define NFS_ATTR_FATTR_V4_LOCATIONS     (1U << 19)
 102#define NFS_ATTR_FATTR_V4_REFERRAL      (1U << 20)
 103#define NFS_ATTR_FATTR_MOUNTPOINT       (1U << 21)
 104#define NFS_ATTR_FATTR_MOUNTED_ON_FILEID (1U << 22)
 105#define NFS_ATTR_FATTR_OWNER_NAME       (1U << 23)
 106#define NFS_ATTR_FATTR_GROUP_NAME       (1U << 24)
 107
 108#define NFS_ATTR_FATTR (NFS_ATTR_FATTR_TYPE \
 109                | NFS_ATTR_FATTR_MODE \
 110                | NFS_ATTR_FATTR_NLINK \
 111                | NFS_ATTR_FATTR_OWNER \
 112                | NFS_ATTR_FATTR_GROUP \
 113                | NFS_ATTR_FATTR_RDEV \
 114                | NFS_ATTR_FATTR_SIZE \
 115                | NFS_ATTR_FATTR_FSID \
 116                | NFS_ATTR_FATTR_FILEID \
 117                | NFS_ATTR_FATTR_ATIME \
 118                | NFS_ATTR_FATTR_MTIME \
 119                | NFS_ATTR_FATTR_CTIME \
 120                | NFS_ATTR_FATTR_CHANGE)
 121#define NFS_ATTR_FATTR_V2 (NFS_ATTR_FATTR \
 122                | NFS_ATTR_FATTR_BLOCKS_USED)
 123#define NFS_ATTR_FATTR_V3 (NFS_ATTR_FATTR \
 124                | NFS_ATTR_FATTR_SPACE_USED)
 125#define NFS_ATTR_FATTR_V4 (NFS_ATTR_FATTR \
 126                | NFS_ATTR_FATTR_SPACE_USED)
 127
 128/*
 129 * Info on the file system
 130 */
 131struct nfs_fsinfo {
 132        struct nfs_fattr        *fattr; /* Post-op attributes */
 133        __u32                   rtmax;  /* max.  read transfer size */
 134        __u32                   rtpref; /* pref. read transfer size */
 135        __u32                   rtmult; /* reads should be multiple of this */
 136        __u32                   wtmax;  /* max.  write transfer size */
 137        __u32                   wtpref; /* pref. write transfer size */
 138        __u32                   wtmult; /* writes should be multiple of this */
 139        __u32                   dtpref; /* pref. readdir transfer size */
 140        __u64                   maxfilesize;
 141        struct timespec         time_delta; /* server time granularity */
 142        __u32                   lease_time; /* in seconds */
 143        __u32                   layouttype; /* supported pnfs layout driver */
 144        __u32                   blksize; /* preferred pnfs io block size */
 145};
 146
 147struct nfs_fsstat {
 148        struct nfs_fattr        *fattr; /* Post-op attributes */
 149        __u64                   tbytes; /* total size in bytes */
 150        __u64                   fbytes; /* # of free bytes */
 151        __u64                   abytes; /* # of bytes available to user */
 152        __u64                   tfiles; /* # of files */
 153        __u64                   ffiles; /* # of free files */
 154        __u64                   afiles; /* # of files available to user */
 155};
 156
 157struct nfs2_fsstat {
 158        __u32                   tsize;  /* Server transfer size */
 159        __u32                   bsize;  /* Filesystem block size */
 160        __u32                   blocks; /* No. of "bsize" blocks on filesystem */
 161        __u32                   bfree;  /* No. of free "bsize" blocks */
 162        __u32                   bavail; /* No. of available "bsize" blocks */
 163};
 164
 165struct nfs_pathconf {
 166        struct nfs_fattr        *fattr; /* Post-op attributes */
 167        __u32                   max_link; /* max # of hard links */
 168        __u32                   max_namelen; /* max name length */
 169};
 170
 171struct nfs4_change_info {
 172        u32                     atomic;
 173        u64                     before;
 174        u64                     after;
 175};
 176
 177struct nfs_seqid;
 178
 179/* nfs41 sessions channel attributes */
 180struct nfs4_channel_attrs {
 181        u32                     max_rqst_sz;
 182        u32                     max_resp_sz;
 183        u32                     max_resp_sz_cached;
 184        u32                     max_ops;
 185        u32                     max_reqs;
 186};
 187
 188/* nfs41 sessions slot seqid */
 189struct nfs4_slot {
 190        u32                     seq_nr;
 191};
 192
 193struct nfs4_sequence_args {
 194        struct nfs4_session     *sa_session;
 195        u32                     sa_slotid;
 196        u8                      sa_cache_this;
 197};
 198
 199struct nfs4_sequence_res {
 200        struct nfs4_session     *sr_session;
 201        struct nfs4_slot        *sr_slot;       /* slot used to send request */
 202        int                     sr_status;      /* sequence operation status */
 203        unsigned long           sr_renewal_time;
 204        u32                     sr_status_flags;
 205};
 206
 207struct nfs4_get_lease_time_args {
 208        struct nfs4_sequence_args       la_seq_args;
 209};
 210
 211struct nfs4_get_lease_time_res {
 212        struct nfs_fsinfo              *lr_fsinfo;
 213        struct nfs4_sequence_res        lr_seq_res;
 214};
 215
 216#define PNFS_LAYOUT_MAXSIZE 4096
 217
 218struct nfs4_layoutdriver_data {
 219        struct page **pages;
 220        __u32 pglen;
 221        __u32 len;
 222};
 223
 224struct pnfs_layout_range {
 225        u32 iomode;
 226        u64 offset;
 227        u64 length;
 228};
 229
 230struct nfs4_layoutget_args {
 231        __u32 type;
 232        struct pnfs_layout_range range;
 233        __u64 minlength;
 234        __u32 maxcount;
 235        struct inode *inode;
 236        struct nfs_open_context *ctx;
 237        struct nfs4_sequence_args seq_args;
 238        nfs4_stateid stateid;
 239        struct nfs4_layoutdriver_data layout;
 240};
 241
 242struct nfs4_layoutget_res {
 243        __u32 return_on_close;
 244        struct pnfs_layout_range range;
 245        __u32 type;
 246        nfs4_stateid stateid;
 247        struct nfs4_sequence_res seq_res;
 248        struct nfs4_layoutdriver_data *layoutp;
 249};
 250
 251struct nfs4_layoutget {
 252        struct nfs4_layoutget_args args;
 253        struct nfs4_layoutget_res res;
 254        gfp_t gfp_flags;
 255};
 256
 257struct nfs4_getdevicelist_args {
 258        const struct nfs_fh *fh;
 259        u32 layoutclass;
 260        struct nfs4_sequence_args seq_args;
 261};
 262
 263struct nfs4_getdevicelist_res {
 264        struct pnfs_devicelist *devlist;
 265        struct nfs4_sequence_res seq_res;
 266};
 267
 268struct nfs4_getdeviceinfo_args {
 269        struct pnfs_device *pdev;
 270        struct nfs4_sequence_args seq_args;
 271};
 272
 273struct nfs4_getdeviceinfo_res {
 274        struct pnfs_device *pdev;
 275        struct nfs4_sequence_res seq_res;
 276};
 277
 278struct nfs4_layoutcommit_args {
 279        nfs4_stateid stateid;
 280        __u64 lastbytewritten;
 281        struct inode *inode;
 282        const u32 *bitmask;
 283        struct nfs4_sequence_args seq_args;
 284};
 285
 286struct nfs4_layoutcommit_res {
 287        struct nfs_fattr *fattr;
 288        const struct nfs_server *server;
 289        struct nfs4_sequence_res seq_res;
 290        int status;
 291};
 292
 293struct nfs4_layoutcommit_data {
 294        struct rpc_task task;
 295        struct nfs_fattr fattr;
 296        struct list_head lseg_list;
 297        struct rpc_cred *cred;
 298        struct nfs4_layoutcommit_args args;
 299        struct nfs4_layoutcommit_res res;
 300};
 301
 302struct nfs4_layoutreturn_args {
 303        struct pnfs_layout_hdr *layout;
 304        struct inode *inode;
 305        nfs4_stateid stateid;
 306        __u32   layout_type;
 307        struct nfs4_sequence_args seq_args;
 308};
 309
 310struct nfs4_layoutreturn_res {
 311        struct nfs4_sequence_res seq_res;
 312        u32 lrs_present;
 313        nfs4_stateid stateid;
 314};
 315
 316struct nfs4_layoutreturn {
 317        struct nfs4_layoutreturn_args args;
 318        struct nfs4_layoutreturn_res res;
 319        struct rpc_cred *cred;
 320        struct nfs_client *clp;
 321        int rpc_status;
 322};
 323
 324struct stateowner_id {
 325        __u64   create_time;
 326        __u32   uniquifier;
 327};
 328
 329/*
 330 * Arguments to the open call.
 331 */
 332struct nfs_openargs {
 333        const struct nfs_fh *   fh;
 334        struct nfs_seqid *      seqid;
 335        int                     open_flags;
 336        fmode_t                 fmode;
 337        u32                     access;
 338        __u64                   clientid;
 339        struct stateowner_id    id;
 340        union {
 341                struct {
 342                        struct iattr *  attrs;    /* UNCHECKED, GUARDED */
 343                        nfs4_verifier   verifier; /* EXCLUSIVE */
 344                };
 345                nfs4_stateid    delegation;             /* CLAIM_DELEGATE_CUR */
 346                fmode_t         delegation_type;        /* CLAIM_PREVIOUS */
 347        } u;
 348        const struct qstr *     name;
 349        const struct nfs_server *server;         /* Needed for ID mapping */
 350        const u32 *             bitmask;
 351        const u32 *             open_bitmap;
 352        __u32                   claim;
 353        struct nfs4_sequence_args       seq_args;
 354};
 355
 356struct nfs_openres {
 357        nfs4_stateid            stateid;
 358        struct nfs_fh           fh;
 359        struct nfs4_change_info cinfo;
 360        __u32                   rflags;
 361        struct nfs_fattr *      f_attr;
 362        struct nfs_seqid *      seqid;
 363        const struct nfs_server *server;
 364        fmode_t                 delegation_type;
 365        nfs4_stateid            delegation;
 366        __u32                   do_recall;
 367        __u64                   maxsize;
 368        __u32                   attrset[NFS4_BITMAP_SIZE];
 369        struct nfs4_string      *owner;
 370        struct nfs4_string      *group_owner;
 371        struct nfs4_sequence_res        seq_res;
 372        __u32                   access_request;
 373        __u32                   access_supported;
 374        __u32                   access_result;
 375};
 376
 377/*
 378 * Arguments to the open_confirm call.
 379 */
 380struct nfs_open_confirmargs {
 381        const struct nfs_fh *   fh;
 382        nfs4_stateid *          stateid;
 383        struct nfs_seqid *      seqid;
 384};
 385
 386struct nfs_open_confirmres {
 387        nfs4_stateid            stateid;
 388        struct nfs_seqid *      seqid;
 389};
 390
 391/*
 392 * Arguments to the close call.
 393 */
 394struct nfs_closeargs {
 395        struct nfs_fh *         fh;
 396        nfs4_stateid *          stateid;
 397        struct nfs_seqid *      seqid;
 398        fmode_t                 fmode;
 399        const u32 *             bitmask;
 400        struct nfs4_sequence_args       seq_args;
 401};
 402
 403struct nfs_closeres {
 404        nfs4_stateid            stateid;
 405        struct nfs_fattr *      fattr;
 406        struct nfs_seqid *      seqid;
 407        const struct nfs_server *server;
 408        struct nfs4_sequence_res        seq_res;
 409};
 410/*
 411 *  * Arguments to the lock,lockt, and locku call.
 412 *   */
 413struct nfs_lowner {
 414        __u64                   clientid;
 415        __u64                   id;
 416        dev_t                   s_dev;
 417};
 418
 419struct nfs_lock_args {
 420        struct nfs_fh *         fh;
 421        struct file_lock *      fl;
 422        struct nfs_seqid *      lock_seqid;
 423        nfs4_stateid *          lock_stateid;
 424        struct nfs_seqid *      open_seqid;
 425        nfs4_stateid *          open_stateid;
 426        struct nfs_lowner       lock_owner;
 427        unsigned char           block : 1;
 428        unsigned char           reclaim : 1;
 429        unsigned char           new_lock_owner : 1;
 430        struct nfs4_sequence_args       seq_args;
 431};
 432
 433struct nfs_lock_res {
 434        nfs4_stateid            stateid;
 435        struct nfs_seqid *      lock_seqid;
 436        struct nfs_seqid *      open_seqid;
 437        struct nfs4_sequence_res        seq_res;
 438};
 439
 440struct nfs_locku_args {
 441        struct nfs_fh *         fh;
 442        struct file_lock *      fl;
 443        struct nfs_seqid *      seqid;
 444        nfs4_stateid *          stateid;
 445        struct nfs4_sequence_args       seq_args;
 446};
 447
 448struct nfs_locku_res {
 449        nfs4_stateid            stateid;
 450        struct nfs_seqid *      seqid;
 451        struct nfs4_sequence_res        seq_res;
 452};
 453
 454struct nfs_lockt_args {
 455        struct nfs_fh *         fh;
 456        struct file_lock *      fl;
 457        struct nfs_lowner       lock_owner;
 458        struct nfs4_sequence_args       seq_args;
 459};
 460
 461struct nfs_lockt_res {
 462        struct file_lock *      denied; /* LOCK, LOCKT failed */
 463        struct nfs4_sequence_res        seq_res;
 464};
 465
 466struct nfs_release_lockowner_args {
 467        struct nfs_lowner       lock_owner;
 468};
 469
 470struct nfs4_delegreturnargs {
 471        const struct nfs_fh *fhandle;
 472        const nfs4_stateid *stateid;
 473        const u32 * bitmask;
 474        struct nfs4_sequence_args       seq_args;
 475};
 476
 477struct nfs4_delegreturnres {
 478        struct nfs_fattr * fattr;
 479        const struct nfs_server *server;
 480        struct nfs4_sequence_res        seq_res;
 481};
 482
 483/*
 484 * Arguments to the read call.
 485 */
 486struct nfs_readargs {
 487        struct nfs_fh *         fh;
 488        struct nfs_open_context *context;
 489        struct nfs_lock_context *lock_context;
 490        __u64                   offset;
 491        __u32                   count;
 492        unsigned int            pgbase;
 493        struct page **          pages;
 494        struct nfs4_sequence_args       seq_args;
 495};
 496
 497struct nfs_readres {
 498        struct nfs_fattr *      fattr;
 499        __u32                   count;
 500        int                     eof;
 501        struct nfs4_sequence_res        seq_res;
 502};
 503
 504/*
 505 * Arguments to the write call.
 506 */
 507struct nfs_writeargs {
 508        struct nfs_fh *         fh;
 509        struct nfs_open_context *context;
 510        struct nfs_lock_context *lock_context;
 511        __u64                   offset;
 512        __u32                   count;
 513        enum nfs3_stable_how    stable;
 514        unsigned int            pgbase;
 515        struct page **          pages;
 516        const u32 *             bitmask;
 517        struct nfs4_sequence_args       seq_args;
 518};
 519
 520struct nfs_write_verifier {
 521        char                    data[8];
 522};
 523
 524struct nfs_writeverf {
 525        struct nfs_write_verifier verifier;
 526        enum nfs3_stable_how    committed;
 527};
 528
 529struct nfs_writeres {
 530        struct nfs_fattr *      fattr;
 531        struct nfs_writeverf *  verf;
 532        __u32                   count;
 533        const struct nfs_server *server;
 534        struct nfs4_sequence_res        seq_res;
 535};
 536
 537/*
 538 * Arguments to the commit call.
 539 */
 540struct nfs_commitargs {
 541        struct nfs_fh           *fh;
 542        __u64                   offset;
 543        __u32                   count;
 544        const u32               *bitmask;
 545        struct nfs4_sequence_args       seq_args;
 546};
 547
 548struct nfs_commitres {
 549        struct nfs_fattr        *fattr;
 550        struct nfs_writeverf    *verf;
 551        const struct nfs_server *server;
 552        struct nfs4_sequence_res        seq_res;
 553};
 554
 555/*
 556 * Common arguments to the unlink call
 557 */
 558struct nfs_removeargs {
 559        const struct nfs_fh     *fh;
 560        struct qstr             name;
 561        struct nfs4_sequence_args       seq_args;
 562};
 563
 564struct nfs_removeres {
 565        const struct nfs_server *server;
 566        struct nfs_fattr        *dir_attr;
 567        struct nfs4_change_info cinfo;
 568        struct nfs4_sequence_res        seq_res;
 569};
 570
 571/*
 572 * Common arguments to the rename call
 573 */
 574struct nfs_renameargs {
 575        const struct nfs_fh             *old_dir;
 576        const struct nfs_fh             *new_dir;
 577        const struct qstr               *old_name;
 578        const struct qstr               *new_name;
 579        struct nfs4_sequence_args       seq_args;
 580};
 581
 582struct nfs_renameres {
 583        const struct nfs_server         *server;
 584        struct nfs4_change_info         old_cinfo;
 585        struct nfs_fattr                *old_fattr;
 586        struct nfs4_change_info         new_cinfo;
 587        struct nfs_fattr                *new_fattr;
 588        struct nfs4_sequence_res        seq_res;
 589};
 590
 591/*
 592 * Argument struct for decode_entry function
 593 */
 594struct nfs_entry {
 595        __u64                   ino;
 596        __u64                   cookie,
 597                                prev_cookie;
 598        const char *            name;
 599        unsigned int            len;
 600        int                     eof;
 601        struct nfs_fh *         fh;
 602        struct nfs_fattr *      fattr;
 603        unsigned char           d_type;
 604        struct nfs_server *     server;
 605};
 606
 607/*
 608 * The following types are for NFSv2 only.
 609 */
 610struct nfs_sattrargs {
 611        struct nfs_fh *         fh;
 612        struct iattr *          sattr;
 613};
 614
 615struct nfs_diropargs {
 616        struct nfs_fh *         fh;
 617        const char *            name;
 618        unsigned int            len;
 619};
 620
 621struct nfs_createargs {
 622        struct nfs_fh *         fh;
 623        const char *            name;
 624        unsigned int            len;
 625        struct iattr *          sattr;
 626};
 627
 628struct nfs_setattrargs {
 629        struct nfs_fh *                 fh;
 630        nfs4_stateid                    stateid;
 631        struct iattr *                  iap;
 632        const struct nfs_server *       server; /* Needed for name mapping */
 633        const u32 *                     bitmask;
 634        struct nfs4_sequence_args       seq_args;
 635};
 636
 637struct nfs_setaclargs {
 638        struct nfs_fh *                 fh;
 639        size_t                          acl_len;
 640        unsigned int                    acl_pgbase;
 641        struct page **                  acl_pages;
 642        struct nfs4_sequence_args       seq_args;
 643};
 644
 645struct nfs_setaclres {
 646        struct nfs4_sequence_res        seq_res;
 647};
 648
 649struct nfs_getaclargs {
 650        struct nfs_fh *                 fh;
 651        size_t                          acl_len;
 652        unsigned int                    acl_pgbase;
 653        struct page **                  acl_pages;
 654        struct nfs4_sequence_args       seq_args;
 655};
 656
 657/* getxattr ACL interface flags */
 658#define NFS4_ACL_TRUNC          0x0001  /* ACL was truncated */
 659struct nfs_getaclres {
 660        size_t                          acl_len;
 661        size_t                          acl_data_offset;
 662        int                             acl_flags;
 663        struct page *                   acl_scratch;
 664        struct nfs4_sequence_res        seq_res;
 665};
 666
 667struct nfs_setattrres {
 668        struct nfs_fattr *              fattr;
 669        const struct nfs_server *       server;
 670        struct nfs4_sequence_res        seq_res;
 671};
 672
 673struct nfs_linkargs {
 674        struct nfs_fh *         fromfh;
 675        struct nfs_fh *         tofh;
 676        const char *            toname;
 677        unsigned int            tolen;
 678};
 679
 680struct nfs_symlinkargs {
 681        struct nfs_fh *         fromfh;
 682        const char *            fromname;
 683        unsigned int            fromlen;
 684        struct page **          pages;
 685        unsigned int            pathlen;
 686        struct iattr *          sattr;
 687};
 688
 689struct nfs_readdirargs {
 690        struct nfs_fh *         fh;
 691        __u32                   cookie;
 692        unsigned int            count;
 693        struct page **          pages;
 694};
 695
 696struct nfs3_getaclargs {
 697        struct nfs_fh *         fh;
 698        int                     mask;
 699        struct page **          pages;
 700};
 701
 702struct nfs3_setaclargs {
 703        struct inode *          inode;
 704        int                     mask;
 705        struct posix_acl *      acl_access;
 706        struct posix_acl *      acl_default;
 707        size_t                  len;
 708        unsigned int            npages;
 709        struct page **          pages;
 710};
 711
 712struct nfs_diropok {
 713        struct nfs_fh *         fh;
 714        struct nfs_fattr *      fattr;
 715};
 716
 717struct nfs_readlinkargs {
 718        struct nfs_fh *         fh;
 719        unsigned int            pgbase;
 720        unsigned int            pglen;
 721        struct page **          pages;
 722};
 723
 724struct nfs3_sattrargs {
 725        struct nfs_fh *         fh;
 726        struct iattr *          sattr;
 727        unsigned int            guard;
 728        struct timespec         guardtime;
 729};
 730
 731struct nfs3_diropargs {
 732        struct nfs_fh *         fh;
 733        const char *            name;
 734        unsigned int            len;
 735};
 736
 737struct nfs3_accessargs {
 738        struct nfs_fh *         fh;
 739        __u32                   access;
 740};
 741
 742struct nfs3_createargs {
 743        struct nfs_fh *         fh;
 744        const char *            name;
 745        unsigned int            len;
 746        struct iattr *          sattr;
 747        enum nfs3_createmode    createmode;
 748        __be32                  verifier[2];
 749};
 750
 751struct nfs3_mkdirargs {
 752        struct nfs_fh *         fh;
 753        const char *            name;
 754        unsigned int            len;
 755        struct iattr *          sattr;
 756};
 757
 758struct nfs3_symlinkargs {
 759        struct nfs_fh *         fromfh;
 760        const char *            fromname;
 761        unsigned int            fromlen;
 762        struct page **          pages;
 763        unsigned int            pathlen;
 764        struct iattr *          sattr;
 765};
 766
 767struct nfs3_mknodargs {
 768        struct nfs_fh *         fh;
 769        const char *            name;
 770        unsigned int            len;
 771        enum nfs3_ftype         type;
 772        struct iattr *          sattr;
 773        dev_t                   rdev;
 774};
 775
 776struct nfs3_linkargs {
 777        struct nfs_fh *         fromfh;
 778        struct nfs_fh *         tofh;
 779        const char *            toname;
 780        unsigned int            tolen;
 781};
 782
 783struct nfs3_readdirargs {
 784        struct nfs_fh *         fh;
 785        __u64                   cookie;
 786        __be32                  verf[2];
 787        int                     plus;
 788        unsigned int            count;
 789        struct page **          pages;
 790};
 791
 792struct nfs3_diropres {
 793        struct nfs_fattr *      dir_attr;
 794        struct nfs_fh *         fh;
 795        struct nfs_fattr *      fattr;
 796};
 797
 798struct nfs3_accessres {
 799        struct nfs_fattr *      fattr;
 800        __u32                   access;
 801};
 802
 803struct nfs3_readlinkargs {
 804        struct nfs_fh *         fh;
 805        unsigned int            pgbase;
 806        unsigned int            pglen;
 807        struct page **          pages;
 808};
 809
 810struct nfs3_linkres {
 811        struct nfs_fattr *      dir_attr;
 812        struct nfs_fattr *      fattr;
 813};
 814
 815struct nfs3_readdirres {
 816        struct nfs_fattr *      dir_attr;
 817        __be32 *                verf;
 818        int                     plus;
 819};
 820
 821struct nfs3_getaclres {
 822        struct nfs_fattr *      fattr;
 823        int                     mask;
 824        unsigned int            acl_access_count;
 825        unsigned int            acl_default_count;
 826        struct posix_acl *      acl_access;
 827        struct posix_acl *      acl_default;
 828};
 829
 830#if IS_ENABLED(CONFIG_NFS_V4)
 831
 832typedef u64 clientid4;
 833
 834struct nfs4_accessargs {
 835        const struct nfs_fh *           fh;
 836        const u32 *                     bitmask;
 837        u32                             access;
 838        struct nfs4_sequence_args       seq_args;
 839};
 840
 841struct nfs4_accessres {
 842        const struct nfs_server *       server;
 843        struct nfs_fattr *              fattr;
 844        u32                             supported;
 845        u32                             access;
 846        struct nfs4_sequence_res        seq_res;
 847};
 848
 849struct nfs4_create_arg {
 850        u32                             ftype;
 851        union {
 852                struct {
 853                        struct page **  pages;
 854                        unsigned int    len;
 855                } symlink;   /* NF4LNK */
 856                struct {
 857                        u32             specdata1;
 858                        u32             specdata2;
 859                } device;    /* NF4BLK, NF4CHR */
 860        } u;
 861        const struct qstr *             name;
 862        const struct nfs_server *       server;
 863        const struct iattr *            attrs;
 864        const struct nfs_fh *           dir_fh;
 865        const u32 *                     bitmask;
 866        struct nfs4_sequence_args       seq_args;
 867};
 868
 869struct nfs4_create_res {
 870        const struct nfs_server *       server;
 871        struct nfs_fh *                 fh;
 872        struct nfs_fattr *              fattr;
 873        struct nfs4_change_info         dir_cinfo;
 874        struct nfs4_sequence_res        seq_res;
 875};
 876
 877struct nfs4_fsinfo_arg {
 878        const struct nfs_fh *           fh;
 879        const u32 *                     bitmask;
 880        struct nfs4_sequence_args       seq_args;
 881};
 882
 883struct nfs4_fsinfo_res {
 884        struct nfs_fsinfo              *fsinfo;
 885        struct nfs4_sequence_res        seq_res;
 886};
 887
 888struct nfs4_getattr_arg {
 889        const struct nfs_fh *           fh;
 890        const u32 *                     bitmask;
 891        struct nfs4_sequence_args       seq_args;
 892};
 893
 894struct nfs4_getattr_res {
 895        const struct nfs_server *       server;
 896        struct nfs_fattr *              fattr;
 897        struct nfs4_sequence_res        seq_res;
 898};
 899
 900struct nfs4_link_arg {
 901        const struct nfs_fh *           fh;
 902        const struct nfs_fh *           dir_fh;
 903        const struct qstr *             name;
 904        const u32 *                     bitmask;
 905        struct nfs4_sequence_args       seq_args;
 906};
 907
 908struct nfs4_link_res {
 909        const struct nfs_server *       server;
 910        struct nfs_fattr *              fattr;
 911        struct nfs4_change_info         cinfo;
 912        struct nfs_fattr *              dir_attr;
 913        struct nfs4_sequence_res        seq_res;
 914};
 915
 916
 917struct nfs4_lookup_arg {
 918        const struct nfs_fh *           dir_fh;
 919        const struct qstr *             name;
 920        const u32 *                     bitmask;
 921        struct nfs4_sequence_args       seq_args;
 922};
 923
 924struct nfs4_lookup_res {
 925        const struct nfs_server *       server;
 926        struct nfs_fattr *              fattr;
 927        struct nfs_fh *                 fh;
 928        struct nfs4_sequence_res        seq_res;
 929};
 930
 931struct nfs4_lookup_root_arg {
 932        const u32 *                     bitmask;
 933        struct nfs4_sequence_args       seq_args;
 934};
 935
 936struct nfs4_pathconf_arg {
 937        const struct nfs_fh *           fh;
 938        const u32 *                     bitmask;
 939        struct nfs4_sequence_args       seq_args;
 940};
 941
 942struct nfs4_pathconf_res {
 943        struct nfs_pathconf            *pathconf;
 944        struct nfs4_sequence_res        seq_res;
 945};
 946
 947struct nfs4_readdir_arg {
 948        const struct nfs_fh *           fh;
 949        u64                             cookie;
 950        nfs4_verifier                   verifier;
 951        u32                             count;
 952        struct page **                  pages;  /* zero-copy data */
 953        unsigned int                    pgbase; /* zero-copy data */
 954        const u32 *                     bitmask;
 955        int                             plus;
 956        struct nfs4_sequence_args       seq_args;
 957};
 958
 959struct nfs4_readdir_res {
 960        nfs4_verifier                   verifier;
 961        unsigned int                    pgbase;
 962        struct nfs4_sequence_res        seq_res;
 963};
 964
 965struct nfs4_readlink {
 966        const struct nfs_fh *           fh;
 967        unsigned int                    pgbase;
 968        unsigned int                    pglen;   /* zero-copy data */
 969        struct page **                  pages;   /* zero-copy data */
 970        struct nfs4_sequence_args       seq_args;
 971};
 972
 973struct nfs4_readlink_res {
 974        struct nfs4_sequence_res        seq_res;
 975};
 976
 977#define NFS4_SETCLIENTID_NAMELEN        (127)
 978struct nfs4_setclientid {
 979        const nfs4_verifier *           sc_verifier;
 980        unsigned int                    sc_name_len;
 981        char                            sc_name[NFS4_SETCLIENTID_NAMELEN + 1];
 982        u32                             sc_prog;
 983        unsigned int                    sc_netid_len;
 984        char                            sc_netid[RPCBIND_MAXNETIDLEN + 1];
 985        unsigned int                    sc_uaddr_len;
 986        char                            sc_uaddr[RPCBIND_MAXUADDRLEN + 1];
 987        u32                             sc_cb_ident;
 988};
 989
 990struct nfs4_setclientid_res {
 991        u64                             clientid;
 992        nfs4_verifier                   confirm;
 993};
 994
 995struct nfs4_statfs_arg {
 996        const struct nfs_fh *           fh;
 997        const u32 *                     bitmask;
 998        struct nfs4_sequence_args       seq_args;
 999};
1000
1001struct nfs4_statfs_res {
1002        struct nfs_fsstat              *fsstat;
1003        struct nfs4_sequence_res        seq_res;
1004};
1005
1006struct nfs4_server_caps_arg {
1007        struct nfs_fh                  *fhandle;
1008        struct nfs4_sequence_args       seq_args;
1009};
1010
1011struct nfs4_server_caps_res {
1012        u32                             attr_bitmask[3];
1013        u32                             acl_bitmask;
1014        u32                             has_links;
1015        u32                             has_symlinks;
1016        u32                             fh_expire_type;
1017        struct nfs4_sequence_res        seq_res;
1018};
1019
1020#define NFS4_PATHNAME_MAXCOMPONENTS 512
1021struct nfs4_pathname {
1022        unsigned int ncomponents;
1023        struct nfs4_string components[NFS4_PATHNAME_MAXCOMPONENTS];
1024};
1025
1026#define NFS4_FS_LOCATION_MAXSERVERS 10
1027struct nfs4_fs_location {
1028        unsigned int nservers;
1029        struct nfs4_string servers[NFS4_FS_LOCATION_MAXSERVERS];
1030        struct nfs4_pathname rootpath;
1031};
1032
1033#define NFS4_FS_LOCATIONS_MAXENTRIES 10
1034struct nfs4_fs_locations {
1035        struct nfs_fattr fattr;
1036        const struct nfs_server *server;
1037        struct nfs4_pathname fs_path;
1038        int nlocations;
1039        struct nfs4_fs_location locations[NFS4_FS_LOCATIONS_MAXENTRIES];
1040};
1041
1042struct nfs4_fs_locations_arg {
1043        const struct nfs_fh *dir_fh;
1044        const struct qstr *name;
1045        struct page *page;
1046        const u32 *bitmask;
1047        struct nfs4_sequence_args       seq_args;
1048};
1049
1050struct nfs4_fs_locations_res {
1051        struct nfs4_fs_locations       *fs_locations;
1052        struct nfs4_sequence_res        seq_res;
1053};
1054
1055struct nfs4_secinfo_oid {
1056        unsigned int len;
1057        char data[GSS_OID_MAX_LEN];
1058};
1059
1060struct nfs4_secinfo_gss {
1061        struct nfs4_secinfo_oid sec_oid4;
1062        unsigned int qop4;
1063        unsigned int service;
1064};
1065
1066struct nfs4_secinfo_flavor {
1067        unsigned int            flavor;
1068        struct nfs4_secinfo_gss gss;
1069};
1070
1071struct nfs4_secinfo_flavors {
1072        unsigned int num_flavors;
1073        struct nfs4_secinfo_flavor flavors[0];
1074};
1075
1076struct nfs4_secinfo_arg {
1077        const struct nfs_fh             *dir_fh;
1078        const struct qstr               *name;
1079        struct nfs4_sequence_args       seq_args;
1080};
1081
1082struct nfs4_secinfo_res {
1083        struct nfs4_secinfo_flavors     *flavors;
1084        struct nfs4_sequence_res        seq_res;
1085};
1086
1087#endif /* CONFIG_NFS_V4 */
1088
1089struct nfstime4 {
1090        u64     seconds;
1091        u32     nseconds;
1092};
1093
1094#ifdef CONFIG_NFS_V4_1
1095
1096struct pnfs_commit_bucket {
1097        struct list_head written;
1098        struct list_head committing;
1099        struct pnfs_layout_segment *wlseg;
1100        struct pnfs_layout_segment *clseg;
1101};
1102
1103struct pnfs_ds_commit_info {
1104        int nwritten;
1105        int ncommitting;
1106        int nbuckets;
1107        struct pnfs_commit_bucket *buckets;
1108};
1109
1110#define NFS4_EXCHANGE_ID_LEN    (48)
1111struct nfs41_exchange_id_args {
1112        struct nfs_client               *client;
1113        nfs4_verifier                   *verifier;
1114        unsigned int                    id_len;
1115        char                            id[NFS4_EXCHANGE_ID_LEN];
1116        u32                             flags;
1117};
1118
1119struct nfs41_server_owner {
1120        uint64_t                        minor_id;
1121        uint32_t                        major_id_sz;
1122        char                            major_id[NFS4_OPAQUE_LIMIT];
1123};
1124
1125struct nfs41_server_scope {
1126        uint32_t                        server_scope_sz;
1127        char                            server_scope[NFS4_OPAQUE_LIMIT];
1128};
1129
1130struct nfs41_impl_id {
1131        char                            domain[NFS4_OPAQUE_LIMIT + 1];
1132        char                            name[NFS4_OPAQUE_LIMIT + 1];
1133        struct nfstime4                 date;
1134};
1135
1136struct nfs41_bind_conn_to_session_res {
1137        struct nfs4_session             *session;
1138        u32                             dir;
1139        bool                            use_conn_in_rdma_mode;
1140};
1141
1142struct nfs41_exchange_id_res {
1143        u64                             clientid;
1144        u32                             seqid;
1145        u32                             flags;
1146        struct nfs41_server_owner       *server_owner;
1147        struct nfs41_server_scope       *server_scope;
1148        struct nfs41_impl_id            *impl_id;
1149};
1150
1151struct nfs41_create_session_args {
1152        struct nfs_client              *client;
1153        uint32_t                        flags;
1154        uint32_t                        cb_program;
1155        struct nfs4_channel_attrs       fc_attrs;       /* Fore Channel */
1156        struct nfs4_channel_attrs       bc_attrs;       /* Back Channel */
1157};
1158
1159struct nfs41_create_session_res {
1160        struct nfs_client              *client;
1161};
1162
1163struct nfs41_reclaim_complete_args {
1164        /* In the future extend to include curr_fh for use with migration */
1165        unsigned char                   one_fs:1;
1166        struct nfs4_sequence_args       seq_args;
1167};
1168
1169struct nfs41_reclaim_complete_res {
1170        struct nfs4_sequence_res        seq_res;
1171};
1172
1173#define SECINFO_STYLE_CURRENT_FH 0
1174#define SECINFO_STYLE_PARENT 1
1175struct nfs41_secinfo_no_name_args {
1176        int                             style;
1177        struct nfs4_sequence_args       seq_args;
1178};
1179
1180struct nfs41_test_stateid_args {
1181        nfs4_stateid                    *stateid;
1182        struct nfs4_sequence_args       seq_args;
1183};
1184
1185struct nfs41_test_stateid_res {
1186        unsigned int                    status;
1187        struct nfs4_sequence_res        seq_res;
1188};
1189
1190struct nfs41_free_stateid_args {
1191        nfs4_stateid                    *stateid;
1192        struct nfs4_sequence_args       seq_args;
1193};
1194
1195struct nfs41_free_stateid_res {
1196        unsigned int                    status;
1197        struct nfs4_sequence_res        seq_res;
1198};
1199
1200#else
1201
1202struct pnfs_ds_commit_info {
1203};
1204
1205#endif /* CONFIG_NFS_V4_1 */
1206
1207struct nfs_page;
1208
1209#define NFS_PAGEVEC_SIZE        (8U)
1210
1211struct nfs_page_array {
1212        struct page             **pagevec;
1213        unsigned int            npages;         /* Max length of pagevec */
1214        struct page             *page_array[NFS_PAGEVEC_SIZE];
1215};
1216
1217struct nfs_read_data {
1218        struct nfs_pgio_header  *header;
1219        struct list_head        list;
1220        struct rpc_task         task;
1221        struct nfs_fattr        fattr;  /* fattr storage */
1222        struct nfs_readargs args;
1223        struct nfs_readres  res;
1224        unsigned long           timestamp;      /* For lease renewal */
1225        int (*read_done_cb) (struct rpc_task *task, struct nfs_read_data *data);
1226        __u64                   mds_offset;
1227        struct nfs_page_array   pages;
1228        struct nfs_client       *ds_clp;        /* pNFS data server */
1229};
1230
1231/* used as flag bits in nfs_pgio_header */
1232enum {
1233        NFS_IOHDR_ERROR = 0,
1234        NFS_IOHDR_EOF,
1235        NFS_IOHDR_REDO,
1236        NFS_IOHDR_NEED_COMMIT,
1237        NFS_IOHDR_NEED_RESCHED,
1238};
1239
1240struct nfs_pgio_header {
1241        struct inode            *inode;
1242        struct rpc_cred         *cred;
1243        struct list_head        pages;
1244        struct list_head        rpc_list;
1245        atomic_t                refcnt;
1246        struct nfs_page         *req;
1247        struct nfs_writeverf    *verf;
1248        struct pnfs_layout_segment *lseg;
1249        loff_t                  io_start;
1250        const struct rpc_call_ops *mds_ops;
1251        void (*release) (struct nfs_pgio_header *hdr);
1252        const struct nfs_pgio_completion_ops *completion_ops;
1253        struct nfs_direct_req   *dreq;
1254        void                    *layout_private;
1255        spinlock_t              lock;
1256        /* fields protected by lock */
1257        int                     pnfs_error;
1258        int                     error;          /* merge with pnfs_error */
1259        unsigned long           good_bytes;     /* boundary of good data */
1260        unsigned long           flags;
1261};
1262
1263struct nfs_read_header {
1264        struct nfs_pgio_header  header;
1265        struct nfs_read_data    rpc_data;
1266};
1267
1268struct nfs_write_data {
1269        struct nfs_pgio_header  *header;
1270        struct list_head        list;
1271        struct rpc_task         task;
1272        struct nfs_fattr        fattr;
1273        struct nfs_writeverf    verf;
1274        struct nfs_writeargs    args;           /* argument struct */
1275        struct nfs_writeres     res;            /* result struct */
1276        unsigned long           timestamp;      /* For lease renewal */
1277        int (*write_done_cb) (struct rpc_task *task, struct nfs_write_data *data);
1278        __u64                   mds_offset;     /* Filelayout dense stripe */
1279        struct nfs_page_array   pages;
1280        struct nfs_client       *ds_clp;        /* pNFS data server */
1281};
1282
1283struct nfs_write_header {
1284        struct nfs_pgio_header  header;
1285        struct nfs_write_data   rpc_data;
1286        struct nfs_writeverf    verf;
1287};
1288
1289struct nfs_mds_commit_info {
1290        atomic_t rpcs_out;
1291        unsigned long           ncommit;
1292        struct list_head        list;
1293};
1294
1295struct nfs_commit_data;
1296struct nfs_inode;
1297struct nfs_commit_completion_ops {
1298        void (*error_cleanup) (struct nfs_inode *nfsi);
1299        void (*completion) (struct nfs_commit_data *data);
1300};
1301
1302struct nfs_commit_info {
1303        spinlock_t                      *lock;
1304        struct nfs_mds_commit_info      *mds;
1305        struct pnfs_ds_commit_info      *ds;
1306        struct nfs_direct_req           *dreq;  /* O_DIRECT request */
1307        const struct nfs_commit_completion_ops *completion_ops;
1308};
1309
1310struct nfs_commit_data {
1311        struct rpc_task         task;
1312        struct inode            *inode;
1313        struct rpc_cred         *cred;
1314        struct nfs_fattr        fattr;
1315        struct nfs_writeverf    verf;
1316        struct list_head        pages;          /* Coalesced requests we wish to flush */
1317        struct list_head        list;           /* lists of struct nfs_write_data */
1318        struct nfs_direct_req   *dreq;          /* O_DIRECT request */
1319        struct nfs_commitargs   args;           /* argument struct */
1320        struct nfs_commitres    res;            /* result struct */
1321        struct nfs_open_context *context;
1322        struct pnfs_layout_segment *lseg;
1323        struct nfs_client       *ds_clp;        /* pNFS data server */
1324        int                     ds_commit_index;
1325        const struct rpc_call_ops *mds_ops;
1326        const struct nfs_commit_completion_ops *completion_ops;
1327        int (*commit_done_cb) (struct rpc_task *task, struct nfs_commit_data *data);
1328};
1329
1330struct nfs_pgio_completion_ops {
1331        void    (*error_cleanup)(struct list_head *head);
1332        void    (*init_hdr)(struct nfs_pgio_header *hdr);
1333        void    (*completion)(struct nfs_pgio_header *hdr);
1334};
1335
1336struct nfs_unlinkdata {
1337        struct hlist_node list;
1338        struct nfs_removeargs args;
1339        struct nfs_removeres res;
1340        struct inode *dir;
1341        struct rpc_cred *cred;
1342        struct nfs_fattr dir_attr;
1343};
1344
1345struct nfs_renamedata {
1346        struct nfs_renameargs   args;
1347        struct nfs_renameres    res;
1348        struct rpc_cred         *cred;
1349        struct inode            *old_dir;
1350        struct dentry           *old_dentry;
1351        struct nfs_fattr        old_fattr;
1352        struct inode            *new_dir;
1353        struct dentry           *new_dentry;
1354        struct nfs_fattr        new_fattr;
1355};
1356
1357struct nfs_access_entry;
1358struct nfs_client;
1359struct rpc_timeout;
1360struct nfs_subversion;
1361struct nfs_mount_info;
1362struct nfs_client_initdata;
1363struct nfs_pageio_descriptor;
1364
1365/*
1366 * RPC procedure vector for NFSv2/NFSv3 demuxing
1367 */
1368struct nfs_rpc_ops {
1369        u32     version;                /* Protocol version */
1370        const struct dentry_operations *dentry_ops;
1371        const struct inode_operations *dir_inode_ops;
1372        const struct inode_operations *file_inode_ops;
1373        const struct file_operations *file_ops;
1374
1375        int     (*getroot) (struct nfs_server *, struct nfs_fh *,
1376                            struct nfs_fsinfo *);
1377        struct vfsmount *(*submount) (struct nfs_server *, struct dentry *,
1378                                      struct nfs_fh *, struct nfs_fattr *);
1379        struct dentry *(*try_mount) (int, const char *, struct nfs_mount_info *,
1380                                     struct nfs_subversion *);
1381        int     (*getattr) (struct nfs_server *, struct nfs_fh *,
1382                            struct nfs_fattr *);
1383        int     (*setattr) (struct dentry *, struct nfs_fattr *,
1384                            struct iattr *);
1385        int     (*lookup)  (struct inode *, struct qstr *,
1386                            struct nfs_fh *, struct nfs_fattr *);
1387        int     (*access)  (struct inode *, struct nfs_access_entry *);
1388        int     (*readlink)(struct inode *, struct page *, unsigned int,
1389                            unsigned int);
1390        int     (*create)  (struct inode *, struct dentry *,
1391                            struct iattr *, int);
1392        int     (*remove)  (struct inode *, struct qstr *);
1393        void    (*unlink_setup)  (struct rpc_message *, struct inode *dir);
1394        void    (*unlink_rpc_prepare) (struct rpc_task *, struct nfs_unlinkdata *);
1395        int     (*unlink_done) (struct rpc_task *, struct inode *);
1396        int     (*rename)  (struct inode *, struct qstr *,
1397                            struct inode *, struct qstr *);
1398        void    (*rename_setup)  (struct rpc_message *msg, struct inode *dir);
1399        void    (*rename_rpc_prepare)(struct rpc_task *task, struct nfs_renamedata *);
1400        int     (*rename_done) (struct rpc_task *task, struct inode *old_dir, struct inode *new_dir);
1401        int     (*link)    (struct inode *, struct inode *, struct qstr *);
1402        int     (*symlink) (struct inode *, struct dentry *, struct page *,
1403                            unsigned int, struct iattr *);
1404        int     (*mkdir)   (struct inode *, struct dentry *, struct iattr *);
1405        int     (*rmdir)   (struct inode *, struct qstr *);
1406        int     (*readdir) (struct dentry *, struct rpc_cred *,
1407                            u64, struct page **, unsigned int, int);
1408        int     (*mknod)   (struct inode *, struct dentry *, struct iattr *,
1409                            dev_t);
1410        int     (*statfs)  (struct nfs_server *, struct nfs_fh *,
1411                            struct nfs_fsstat *);
1412        int     (*fsinfo)  (struct nfs_server *, struct nfs_fh *,
1413                            struct nfs_fsinfo *);
1414        int     (*pathconf) (struct nfs_server *, struct nfs_fh *,
1415                             struct nfs_pathconf *);
1416        int     (*set_capabilities)(struct nfs_server *, struct nfs_fh *);
1417        int     (*decode_dirent)(struct xdr_stream *, struct nfs_entry *, int);
1418        void    (*read_setup)   (struct nfs_read_data *, struct rpc_message *);
1419        void    (*read_pageio_init)(struct nfs_pageio_descriptor *, struct inode *,
1420                                    const struct nfs_pgio_completion_ops *);
1421        void    (*read_rpc_prepare)(struct rpc_task *, struct nfs_read_data *);
1422        int     (*read_done)  (struct rpc_task *, struct nfs_read_data *);
1423        void    (*write_setup)  (struct nfs_write_data *, struct rpc_message *);
1424        void    (*write_pageio_init)(struct nfs_pageio_descriptor *, struct inode *, int,
1425                                     const struct nfs_pgio_completion_ops *);
1426        void    (*write_rpc_prepare)(struct rpc_task *, struct nfs_write_data *);
1427        int     (*write_done)  (struct rpc_task *, struct nfs_write_data *);
1428        void    (*commit_setup) (struct nfs_commit_data *, struct rpc_message *);
1429        void    (*commit_rpc_prepare)(struct rpc_task *, struct nfs_commit_data *);
1430        int     (*commit_done) (struct rpc_task *, struct nfs_commit_data *);
1431        int     (*lock)(struct file *, int, struct file_lock *);
1432        int     (*lock_check_bounds)(const struct file_lock *);
1433        void    (*clear_acl_cache)(struct inode *);
1434        void    (*close_context)(struct nfs_open_context *ctx, int);
1435        struct inode * (*open_context) (struct inode *dir,
1436                                struct nfs_open_context *ctx,
1437                                int open_flags,
1438                                struct iattr *iattr);
1439        int (*have_delegation)(struct inode *, fmode_t);
1440        int (*return_delegation)(struct inode *);
1441        struct nfs_client *(*alloc_client) (const struct nfs_client_initdata *);
1442        struct nfs_client *
1443                (*init_client) (struct nfs_client *, const struct rpc_timeout *,
1444                                const char *, rpc_authflavor_t);
1445        void    (*free_client) (struct nfs_client *);
1446        struct nfs_server *(*create_server)(struct nfs_mount_info *, struct nfs_subversion *);
1447        struct nfs_server *(*clone_server)(struct nfs_server *, struct nfs_fh *,
1448                                           struct nfs_fattr *, rpc_authflavor_t);
1449};
1450
1451/*
1452 *      NFS_CALL(getattr, inode, (fattr));
1453 * into
1454 *      NFS_PROTO(inode)->getattr(fattr);
1455 */
1456#define NFS_CALL(op, inode, args)       NFS_PROTO(inode)->op args
1457
1458/*
1459 * Function vectors etc. for the NFS client
1460 */
1461extern const struct nfs_rpc_ops nfs_v2_clientops;
1462extern const struct nfs_rpc_ops nfs_v3_clientops;
1463extern const struct nfs_rpc_ops nfs_v4_clientops;
1464extern const struct rpc_version nfs_version2;
1465extern const struct rpc_version nfs_version3;
1466extern const struct rpc_version nfs_version4;
1467
1468extern const struct rpc_version nfsacl_version3;
1469extern const struct rpc_program nfsacl_program;
1470
1471#endif
1472
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