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        struct pnfs_layout_segment **lsegpp;
 255        gfp_t gfp_flags;
 256};
 257
 258struct nfs4_getdevicelist_args {
 259        const struct nfs_fh *fh;
 260        u32 layoutclass;
 261        struct nfs4_sequence_args seq_args;
 262};
 263
 264struct nfs4_getdevicelist_res {
 265        struct pnfs_devicelist *devlist;
 266        struct nfs4_sequence_res seq_res;
 267};
 268
 269struct nfs4_getdeviceinfo_args {
 270        struct pnfs_device *pdev;
 271        struct nfs4_sequence_args seq_args;
 272};
 273
 274struct nfs4_getdeviceinfo_res {
 275        struct pnfs_device *pdev;
 276        struct nfs4_sequence_res seq_res;
 277};
 278
 279struct nfs4_layoutcommit_args {
 280        nfs4_stateid stateid;
 281        __u64 lastbytewritten;
 282        struct inode *inode;
 283        const u32 *bitmask;
 284        struct nfs4_sequence_args seq_args;
 285};
 286
 287struct nfs4_layoutcommit_res {
 288        struct nfs_fattr *fattr;
 289        const struct nfs_server *server;
 290        struct nfs4_sequence_res seq_res;
 291        int status;
 292};
 293
 294struct nfs4_layoutcommit_data {
 295        struct rpc_task task;
 296        struct nfs_fattr fattr;
 297        struct list_head lseg_list;
 298        struct rpc_cred *cred;
 299        struct nfs4_layoutcommit_args args;
 300        struct nfs4_layoutcommit_res res;
 301};
 302
 303struct nfs4_layoutreturn_args {
 304        struct pnfs_layout_hdr *layout;
 305        struct inode *inode;
 306        nfs4_stateid stateid;
 307        __u32   layout_type;
 308        struct nfs4_sequence_args seq_args;
 309};
 310
 311struct nfs4_layoutreturn_res {
 312        struct nfs4_sequence_res seq_res;
 313        u32 lrs_present;
 314        nfs4_stateid stateid;
 315};
 316
 317struct nfs4_layoutreturn {
 318        struct nfs4_layoutreturn_args args;
 319        struct nfs4_layoutreturn_res res;
 320        struct rpc_cred *cred;
 321        struct nfs_client *clp;
 322        int rpc_status;
 323};
 324
 325struct stateowner_id {
 326        __u64   create_time;
 327        __u32   uniquifier;
 328};
 329
 330/*
 331 * Arguments to the open call.
 332 */
 333struct nfs_openargs {
 334        const struct nfs_fh *   fh;
 335        struct nfs_seqid *      seqid;
 336        int                     open_flags;
 337        fmode_t                 fmode;
 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};
 373
 374/*
 375 * Arguments to the open_confirm call.
 376 */
 377struct nfs_open_confirmargs {
 378        const struct nfs_fh *   fh;
 379        nfs4_stateid *          stateid;
 380        struct nfs_seqid *      seqid;
 381};
 382
 383struct nfs_open_confirmres {
 384        nfs4_stateid            stateid;
 385        struct nfs_seqid *      seqid;
 386};
 387
 388/*
 389 * Arguments to the close call.
 390 */
 391struct nfs_closeargs {
 392        struct nfs_fh *         fh;
 393        nfs4_stateid *          stateid;
 394        struct nfs_seqid *      seqid;
 395        fmode_t                 fmode;
 396        const u32 *             bitmask;
 397        struct nfs4_sequence_args       seq_args;
 398};
 399
 400struct nfs_closeres {
 401        nfs4_stateid            stateid;
 402        struct nfs_fattr *      fattr;
 403        struct nfs_seqid *      seqid;
 404        const struct nfs_server *server;
 405        struct nfs4_sequence_res        seq_res;
 406};
 407/*
 408 *  * Arguments to the lock,lockt, and locku call.
 409 *   */
 410struct nfs_lowner {
 411        __u64                   clientid;
 412        __u64                   id;
 413        dev_t                   s_dev;
 414};
 415
 416struct nfs_lock_args {
 417        struct nfs_fh *         fh;
 418        struct file_lock *      fl;
 419        struct nfs_seqid *      lock_seqid;
 420        nfs4_stateid *          lock_stateid;
 421        struct nfs_seqid *      open_seqid;
 422        nfs4_stateid *          open_stateid;
 423        struct nfs_lowner       lock_owner;
 424        unsigned char           block : 1;
 425        unsigned char           reclaim : 1;
 426        unsigned char           new_lock_owner : 1;
 427        struct nfs4_sequence_args       seq_args;
 428};
 429
 430struct nfs_lock_res {
 431        nfs4_stateid            stateid;
 432        struct nfs_seqid *      lock_seqid;
 433        struct nfs_seqid *      open_seqid;
 434        struct nfs4_sequence_res        seq_res;
 435};
 436
 437struct nfs_locku_args {
 438        struct nfs_fh *         fh;
 439        struct file_lock *      fl;
 440        struct nfs_seqid *      seqid;
 441        nfs4_stateid *          stateid;
 442        struct nfs4_sequence_args       seq_args;
 443};
 444
 445struct nfs_locku_res {
 446        nfs4_stateid            stateid;
 447        struct nfs_seqid *      seqid;
 448        struct nfs4_sequence_res        seq_res;
 449};
 450
 451struct nfs_lockt_args {
 452        struct nfs_fh *         fh;
 453        struct file_lock *      fl;
 454        struct nfs_lowner       lock_owner;
 455        struct nfs4_sequence_args       seq_args;
 456};
 457
 458struct nfs_lockt_res {
 459        struct file_lock *      denied; /* LOCK, LOCKT failed */
 460        struct nfs4_sequence_res        seq_res;
 461};
 462
 463struct nfs_release_lockowner_args {
 464        struct nfs_lowner       lock_owner;
 465};
 466
 467struct nfs4_delegreturnargs {
 468        const struct nfs_fh *fhandle;
 469        const nfs4_stateid *stateid;
 470        const u32 * bitmask;
 471        struct nfs4_sequence_args       seq_args;
 472};
 473
 474struct nfs4_delegreturnres {
 475        struct nfs_fattr * fattr;
 476        const struct nfs_server *server;
 477        struct nfs4_sequence_res        seq_res;
 478};
 479
 480/*
 481 * Arguments to the read call.
 482 */
 483struct nfs_readargs {
 484        struct nfs_fh *         fh;
 485        struct nfs_open_context *context;
 486        struct nfs_lock_context *lock_context;
 487        __u64                   offset;
 488        __u32                   count;
 489        unsigned int            pgbase;
 490        struct page **          pages;
 491        struct nfs4_sequence_args       seq_args;
 492};
 493
 494struct nfs_readres {
 495        struct nfs_fattr *      fattr;
 496        __u32                   count;
 497        int                     eof;
 498        struct nfs4_sequence_res        seq_res;
 499};
 500
 501/*
 502 * Arguments to the write call.
 503 */
 504struct nfs_writeargs {
 505        struct nfs_fh *         fh;
 506        struct nfs_open_context *context;
 507        struct nfs_lock_context *lock_context;
 508        __u64                   offset;
 509        __u32                   count;
 510        enum nfs3_stable_how    stable;
 511        unsigned int            pgbase;
 512        struct page **          pages;
 513        const u32 *             bitmask;
 514        struct nfs4_sequence_args       seq_args;
 515};
 516
 517struct nfs_write_verifier {
 518        char                    data[8];
 519};
 520
 521struct nfs_writeverf {
 522        struct nfs_write_verifier verifier;
 523        enum nfs3_stable_how    committed;
 524};
 525
 526struct nfs_writeres {
 527        struct nfs_fattr *      fattr;
 528        struct nfs_writeverf *  verf;
 529        __u32                   count;
 530        const struct nfs_server *server;
 531        struct nfs4_sequence_res        seq_res;
 532};
 533
 534/*
 535 * Arguments to the commit call.
 536 */
 537struct nfs_commitargs {
 538        struct nfs_fh           *fh;
 539        __u64                   offset;
 540        __u32                   count;
 541        const u32               *bitmask;
 542        struct nfs4_sequence_args       seq_args;
 543};
 544
 545struct nfs_commitres {
 546        struct nfs_fattr        *fattr;
 547        struct nfs_writeverf    *verf;
 548        const struct nfs_server *server;
 549        struct nfs4_sequence_res        seq_res;
 550};
 551
 552/*
 553 * Common arguments to the unlink call
 554 */
 555struct nfs_removeargs {
 556        const struct nfs_fh     *fh;
 557        struct qstr             name;
 558        struct nfs4_sequence_args       seq_args;
 559};
 560
 561struct nfs_removeres {
 562        const struct nfs_server *server;
 563        struct nfs_fattr        *dir_attr;
 564        struct nfs4_change_info cinfo;
 565        struct nfs4_sequence_res        seq_res;
 566};
 567
 568/*
 569 * Common arguments to the rename call
 570 */
 571struct nfs_renameargs {
 572        const struct nfs_fh             *old_dir;
 573        const struct nfs_fh             *new_dir;
 574        const struct qstr               *old_name;
 575        const struct qstr               *new_name;
 576        struct nfs4_sequence_args       seq_args;
 577};
 578
 579struct nfs_renameres {
 580        const struct nfs_server         *server;
 581        struct nfs4_change_info         old_cinfo;
 582        struct nfs_fattr                *old_fattr;
 583        struct nfs4_change_info         new_cinfo;
 584        struct nfs_fattr                *new_fattr;
 585        struct nfs4_sequence_res        seq_res;
 586};
 587
 588/*
 589 * Argument struct for decode_entry function
 590 */
 591struct nfs_entry {
 592        __u64                   ino;
 593        __u64                   cookie,
 594                                prev_cookie;
 595        const char *            name;
 596        unsigned int            len;
 597        int                     eof;
 598        struct nfs_fh *         fh;
 599        struct nfs_fattr *      fattr;
 600        unsigned char           d_type;
 601        struct nfs_server *     server;
 602};
 603
 604/*
 605 * The following types are for NFSv2 only.
 606 */
 607struct nfs_sattrargs {
 608        struct nfs_fh *         fh;
 609        struct iattr *          sattr;
 610};
 611
 612struct nfs_diropargs {
 613        struct nfs_fh *         fh;
 614        const char *            name;
 615        unsigned int            len;
 616};
 617
 618struct nfs_createargs {
 619        struct nfs_fh *         fh;
 620        const char *            name;
 621        unsigned int            len;
 622        struct iattr *          sattr;
 623};
 624
 625struct nfs_setattrargs {
 626        struct nfs_fh *                 fh;
 627        nfs4_stateid                    stateid;
 628        struct iattr *                  iap;
 629        const struct nfs_server *       server; /* Needed for name mapping */
 630        const u32 *                     bitmask;
 631        struct nfs4_sequence_args       seq_args;
 632};
 633
 634struct nfs_setaclargs {
 635        struct nfs_fh *                 fh;
 636        size_t                          acl_len;
 637        unsigned int                    acl_pgbase;
 638        struct page **                  acl_pages;
 639        struct nfs4_sequence_args       seq_args;
 640};
 641
 642struct nfs_setaclres {
 643        struct nfs4_sequence_res        seq_res;
 644};
 645
 646struct nfs_getaclargs {
 647        struct nfs_fh *                 fh;
 648        size_t                          acl_len;
 649        unsigned int                    acl_pgbase;
 650        struct page **                  acl_pages;
 651        struct nfs4_sequence_args       seq_args;
 652};
 653
 654/* getxattr ACL interface flags */
 655#define NFS4_ACL_TRUNC          0x0001  /* ACL was truncated */
 656struct nfs_getaclres {
 657        size_t                          acl_len;
 658        size_t                          acl_data_offset;
 659        int                             acl_flags;
 660        struct page *                   acl_scratch;
 661        struct nfs4_sequence_res        seq_res;
 662};
 663
 664struct nfs_setattrres {
 665        struct nfs_fattr *              fattr;
 666        const struct nfs_server *       server;
 667        struct nfs4_sequence_res        seq_res;
 668};
 669
 670struct nfs_linkargs {
 671        struct nfs_fh *         fromfh;
 672        struct nfs_fh *         tofh;
 673        const char *            toname;
 674        unsigned int            tolen;
 675};
 676
 677struct nfs_symlinkargs {
 678        struct nfs_fh *         fromfh;
 679        const char *            fromname;
 680        unsigned int            fromlen;
 681        struct page **          pages;
 682        unsigned int            pathlen;
 683        struct iattr *          sattr;
 684};
 685
 686struct nfs_readdirargs {
 687        struct nfs_fh *         fh;
 688        __u32                   cookie;
 689        unsigned int            count;
 690        struct page **          pages;
 691};
 692
 693struct nfs3_getaclargs {
 694        struct nfs_fh *         fh;
 695        int                     mask;
 696        struct page **          pages;
 697};
 698
 699struct nfs3_setaclargs {
 700        struct inode *          inode;
 701        int                     mask;
 702        struct posix_acl *      acl_access;
 703        struct posix_acl *      acl_default;
 704        size_t                  len;
 705        unsigned int            npages;
 706        struct page **          pages;
 707};
 708
 709struct nfs_diropok {
 710        struct nfs_fh *         fh;
 711        struct nfs_fattr *      fattr;
 712};
 713
 714struct nfs_readlinkargs {
 715        struct nfs_fh *         fh;
 716        unsigned int            pgbase;
 717        unsigned int            pglen;
 718        struct page **          pages;
 719};
 720
 721struct nfs3_sattrargs {
 722        struct nfs_fh *         fh;
 723        struct iattr *          sattr;
 724        unsigned int            guard;
 725        struct timespec         guardtime;
 726};
 727
 728struct nfs3_diropargs {
 729        struct nfs_fh *         fh;
 730        const char *            name;
 731        unsigned int            len;
 732};
 733
 734struct nfs3_accessargs {
 735        struct nfs_fh *         fh;
 736        __u32                   access;
 737};
 738
 739struct nfs3_createargs {
 740        struct nfs_fh *         fh;
 741        const char *            name;
 742        unsigned int            len;
 743        struct iattr *          sattr;
 744        enum nfs3_createmode    createmode;
 745        __be32                  verifier[2];
 746};
 747
 748struct nfs3_mkdirargs {
 749        struct nfs_fh *         fh;
 750        const char *            name;
 751        unsigned int            len;
 752        struct iattr *          sattr;
 753};
 754
 755struct nfs3_symlinkargs {
 756        struct nfs_fh *         fromfh;
 757        const char *            fromname;
 758        unsigned int            fromlen;
 759        struct page **          pages;
 760        unsigned int            pathlen;
 761        struct iattr *          sattr;
 762};
 763
 764struct nfs3_mknodargs {
 765        struct nfs_fh *         fh;
 766        const char *            name;
 767        unsigned int            len;
 768        enum nfs3_ftype         type;
 769        struct iattr *          sattr;
 770        dev_t                   rdev;
 771};
 772
 773struct nfs3_linkargs {
 774        struct nfs_fh *         fromfh;
 775        struct nfs_fh *         tofh;
 776        const char *            toname;
 777        unsigned int            tolen;
 778};
 779
 780struct nfs3_readdirargs {
 781        struct nfs_fh *         fh;
 782        __u64                   cookie;
 783        __be32                  verf[2];
 784        int                     plus;
 785        unsigned int            count;
 786        struct page **          pages;
 787};
 788
 789struct nfs3_diropres {
 790        struct nfs_fattr *      dir_attr;
 791        struct nfs_fh *         fh;
 792        struct nfs_fattr *      fattr;
 793};
 794
 795struct nfs3_accessres {
 796        struct nfs_fattr *      fattr;
 797        __u32                   access;
 798};
 799
 800struct nfs3_readlinkargs {
 801        struct nfs_fh *         fh;
 802        unsigned int            pgbase;
 803        unsigned int            pglen;
 804        struct page **          pages;
 805};
 806
 807struct nfs3_linkres {
 808        struct nfs_fattr *      dir_attr;
 809        struct nfs_fattr *      fattr;
 810};
 811
 812struct nfs3_readdirres {
 813        struct nfs_fattr *      dir_attr;
 814        __be32 *                verf;
 815        int                     plus;
 816};
 817
 818struct nfs3_getaclres {
 819        struct nfs_fattr *      fattr;
 820        int                     mask;
 821        unsigned int            acl_access_count;
 822        unsigned int            acl_default_count;
 823        struct posix_acl *      acl_access;
 824        struct posix_acl *      acl_default;
 825};
 826
 827#if IS_ENABLED(CONFIG_NFS_V4)
 828
 829typedef u64 clientid4;
 830
 831struct nfs4_accessargs {
 832        const struct nfs_fh *           fh;
 833        const u32 *                     bitmask;
 834        u32                             access;
 835        struct nfs4_sequence_args       seq_args;
 836};
 837
 838struct nfs4_accessres {
 839        const struct nfs_server *       server;
 840        struct nfs_fattr *              fattr;
 841        u32                             supported;
 842        u32                             access;
 843        struct nfs4_sequence_res        seq_res;
 844};
 845
 846struct nfs4_create_arg {
 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        struct nfs4_sequence_args       seq_args;
 864};
 865
 866struct nfs4_create_res {
 867        const struct nfs_server *       server;
 868        struct nfs_fh *                 fh;
 869        struct nfs_fattr *              fattr;
 870        struct nfs4_change_info         dir_cinfo;
 871        struct nfs4_sequence_res        seq_res;
 872};
 873
 874struct nfs4_fsinfo_arg {
 875        const struct nfs_fh *           fh;
 876        const u32 *                     bitmask;
 877        struct nfs4_sequence_args       seq_args;
 878};
 879
 880struct nfs4_fsinfo_res {
 881        struct nfs_fsinfo              *fsinfo;
 882        struct nfs4_sequence_res        seq_res;
 883};
 884
 885struct nfs4_getattr_arg {
 886        const struct nfs_fh *           fh;
 887        const u32 *                     bitmask;
 888        struct nfs4_sequence_args       seq_args;
 889};
 890
 891struct nfs4_getattr_res {
 892        const struct nfs_server *       server;
 893        struct nfs_fattr *              fattr;
 894        struct nfs4_sequence_res        seq_res;
 895};
 896
 897struct nfs4_link_arg {
 898        const struct nfs_fh *           fh;
 899        const struct nfs_fh *           dir_fh;
 900        const struct qstr *             name;
 901        const u32 *                     bitmask;
 902        struct nfs4_sequence_args       seq_args;
 903};
 904
 905struct nfs4_link_res {
 906        const struct nfs_server *       server;
 907        struct nfs_fattr *              fattr;
 908        struct nfs4_change_info         cinfo;
 909        struct nfs_fattr *              dir_attr;
 910        struct nfs4_sequence_res        seq_res;
 911};
 912
 913
 914struct nfs4_lookup_arg {
 915        const struct nfs_fh *           dir_fh;
 916        const struct qstr *             name;
 917        const u32 *                     bitmask;
 918        struct nfs4_sequence_args       seq_args;
 919};
 920
 921struct nfs4_lookup_res {
 922        const struct nfs_server *       server;
 923        struct nfs_fattr *              fattr;
 924        struct nfs_fh *                 fh;
 925        struct nfs4_sequence_res        seq_res;
 926};
 927
 928struct nfs4_lookup_root_arg {
 929        const u32 *                     bitmask;
 930        struct nfs4_sequence_args       seq_args;
 931};
 932
 933struct nfs4_pathconf_arg {
 934        const struct nfs_fh *           fh;
 935        const u32 *                     bitmask;
 936        struct nfs4_sequence_args       seq_args;
 937};
 938
 939struct nfs4_pathconf_res {
 940        struct nfs_pathconf            *pathconf;
 941        struct nfs4_sequence_res        seq_res;
 942};
 943
 944struct nfs4_readdir_arg {
 945        const struct nfs_fh *           fh;
 946        u64                             cookie;
 947        nfs4_verifier                   verifier;
 948        u32                             count;
 949        struct page **                  pages;  /* zero-copy data */
 950        unsigned int                    pgbase; /* zero-copy data */
 951        const u32 *                     bitmask;
 952        int                             plus;
 953        struct nfs4_sequence_args       seq_args;
 954};
 955
 956struct nfs4_readdir_res {
 957        nfs4_verifier                   verifier;
 958        unsigned int                    pgbase;
 959        struct nfs4_sequence_res        seq_res;
 960};
 961
 962struct nfs4_readlink {
 963        const struct nfs_fh *           fh;
 964        unsigned int                    pgbase;
 965        unsigned int                    pglen;   /* zero-copy data */
 966        struct page **                  pages;   /* zero-copy data */
 967        struct nfs4_sequence_args       seq_args;
 968};
 969
 970struct nfs4_readlink_res {
 971        struct nfs4_sequence_res        seq_res;
 972};
 973
 974#define NFS4_SETCLIENTID_NAMELEN        (127)
 975struct nfs4_setclientid {
 976        const nfs4_verifier *           sc_verifier;
 977        unsigned int                    sc_name_len;
 978        char                            sc_name[NFS4_SETCLIENTID_NAMELEN + 1];
 979        u32                             sc_prog;
 980        unsigned int                    sc_netid_len;
 981        char                            sc_netid[RPCBIND_MAXNETIDLEN + 1];
 982        unsigned int                    sc_uaddr_len;
 983        char                            sc_uaddr[RPCBIND_MAXUADDRLEN + 1];
 984        u32                             sc_cb_ident;
 985};
 986
 987struct nfs4_setclientid_res {
 988        u64                             clientid;
 989        nfs4_verifier                   confirm;
 990};
 991
 992struct nfs4_statfs_arg {
 993        const struct nfs_fh *           fh;
 994        const u32 *                     bitmask;
 995        struct nfs4_sequence_args       seq_args;
 996};
 997
 998struct nfs4_statfs_res {
 999        struct nfs_fsstat              *fsstat;
1000        struct nfs4_sequence_res        seq_res;
1001};
1002
1003struct nfs4_server_caps_arg {
1004        struct nfs_fh                  *fhandle;
1005        struct nfs4_sequence_args       seq_args;
1006};
1007
1008struct nfs4_server_caps_res {
1009        u32                             attr_bitmask[3];
1010        u32                             acl_bitmask;
1011        u32                             has_links;
1012        u32                             has_symlinks;
1013        u32                             fh_expire_type;
1014        struct nfs4_sequence_res        seq_res;
1015};
1016
1017#define NFS4_PATHNAME_MAXCOMPONENTS 512
1018struct nfs4_pathname {
1019        unsigned int ncomponents;
1020        struct nfs4_string components[NFS4_PATHNAME_MAXCOMPONENTS];
1021};
1022
1023#define NFS4_FS_LOCATION_MAXSERVERS 10
1024struct nfs4_fs_location {
1025        unsigned int nservers;
1026        struct nfs4_string servers[NFS4_FS_LOCATION_MAXSERVERS];
1027        struct nfs4_pathname rootpath;
1028};
1029
1030#define NFS4_FS_LOCATIONS_MAXENTRIES 10
1031struct nfs4_fs_locations {
1032        struct nfs_fattr fattr;
1033        const struct nfs_server *server;
1034        struct nfs4_pathname fs_path;
1035        int nlocations;
1036        struct nfs4_fs_location locations[NFS4_FS_LOCATIONS_MAXENTRIES];
1037};
1038
1039struct nfs4_fs_locations_arg {
1040        const struct nfs_fh *dir_fh;
1041        const struct qstr *name;
1042        struct page *page;
1043        const u32 *bitmask;
1044        struct nfs4_sequence_args       seq_args;
1045};
1046
1047struct nfs4_fs_locations_res {
1048        struct nfs4_fs_locations       *fs_locations;
1049        struct nfs4_sequence_res        seq_res;
1050};
1051
1052struct nfs4_secinfo_oid {
1053        unsigned int len;
1054        char data[GSS_OID_MAX_LEN];
1055};
1056
1057struct nfs4_secinfo_gss {
1058        struct nfs4_secinfo_oid sec_oid4;
1059        unsigned int qop4;
1060        unsigned int service;
1061};
1062
1063struct nfs4_secinfo_flavor {
1064        unsigned int            flavor;
1065        struct nfs4_secinfo_gss gss;
1066};
1067
1068struct nfs4_secinfo_flavors {
1069        unsigned int num_flavors;
1070        struct nfs4_secinfo_flavor flavors[0];
1071};
1072
1073struct nfs4_secinfo_arg {
1074        const struct nfs_fh             *dir_fh;
1075        const struct qstr               *name;
1076        struct nfs4_sequence_args       seq_args;
1077};
1078
1079struct nfs4_secinfo_res {
1080        struct nfs4_secinfo_flavors     *flavors;
1081        struct nfs4_sequence_res        seq_res;
1082};
1083
1084#endif /* CONFIG_NFS_V4 */
1085
1086struct nfstime4 {
1087        u64     seconds;
1088        u32     nseconds;
1089};
1090
1091#ifdef CONFIG_NFS_V4_1
1092
1093struct pnfs_commit_bucket {
1094        struct list_head written;
1095        struct list_head committing;
1096        struct pnfs_layout_segment *wlseg;
1097        struct pnfs_layout_segment *clseg;
1098};
1099
1100struct pnfs_ds_commit_info {
1101        int nwritten;
1102        int ncommitting;
1103        int nbuckets;
1104        struct pnfs_commit_bucket *buckets;
1105};
1106
1107#define NFS4_EXCHANGE_ID_LEN    (48)
1108struct nfs41_exchange_id_args {
1109        struct nfs_client               *client;
1110        nfs4_verifier                   *verifier;
1111        unsigned int                    id_len;
1112        char                            id[NFS4_EXCHANGE_ID_LEN];
1113        u32                             flags;
1114};
1115
1116struct nfs41_server_owner {
1117        uint64_t                        minor_id;
1118        uint32_t                        major_id_sz;
1119        char                            major_id[NFS4_OPAQUE_LIMIT];
1120};
1121
1122struct nfs41_server_scope {
1123        uint32_t                        server_scope_sz;
1124        char                            server_scope[NFS4_OPAQUE_LIMIT];
1125};
1126
1127struct nfs41_impl_id {
1128        char                            domain[NFS4_OPAQUE_LIMIT + 1];
1129        char                            name[NFS4_OPAQUE_LIMIT + 1];
1130        struct nfstime4                 date;
1131};
1132
1133struct nfs41_bind_conn_to_session_res {
1134        struct nfs4_session             *session;
1135        u32                             dir;
1136        bool                            use_conn_in_rdma_mode;
1137};
1138
1139struct nfs41_exchange_id_res {
1140        u64                             clientid;
1141        u32                             seqid;
1142        u32                             flags;
1143        struct nfs41_server_owner       *server_owner;
1144        struct nfs41_server_scope       *server_scope;
1145        struct nfs41_impl_id            *impl_id;
1146};
1147
1148struct nfs41_create_session_args {
1149        struct nfs_client              *client;
1150        uint32_t                        flags;
1151        uint32_t                        cb_program;
1152        struct nfs4_channel_attrs       fc_attrs;       /* Fore Channel */
1153        struct nfs4_channel_attrs       bc_attrs;       /* Back Channel */
1154};
1155
1156struct nfs41_create_session_res {
1157        struct nfs_client              *client;
1158};
1159
1160struct nfs41_reclaim_complete_args {
1161        /* In the future extend to include curr_fh for use with migration */
1162        unsigned char                   one_fs:1;
1163        struct nfs4_sequence_args       seq_args;
1164};
1165
1166struct nfs41_reclaim_complete_res {
1167        struct nfs4_sequence_res        seq_res;
1168};
1169
1170#define SECINFO_STYLE_CURRENT_FH 0
1171#define SECINFO_STYLE_PARENT 1
1172struct nfs41_secinfo_no_name_args {
1173        int                             style;
1174        struct nfs4_sequence_args       seq_args;
1175};
1176
1177struct nfs41_test_stateid_args {
1178        nfs4_stateid                    *stateid;
1179        struct nfs4_sequence_args       seq_args;
1180};
1181
1182struct nfs41_test_stateid_res {
1183        unsigned int                    status;
1184        struct nfs4_sequence_res        seq_res;
1185};
1186
1187struct nfs41_free_stateid_args {
1188        nfs4_stateid                    *stateid;
1189        struct nfs4_sequence_args       seq_args;
1190};
1191
1192struct nfs41_free_stateid_res {
1193        unsigned int                    status;
1194        struct nfs4_sequence_res        seq_res;
1195};
1196
1197#else
1198
1199struct pnfs_ds_commit_info {
1200};
1201
1202#endif /* CONFIG_NFS_V4_1 */
1203
1204struct nfs_page;
1205
1206#define NFS_PAGEVEC_SIZE        (8U)
1207
1208struct nfs_page_array {
1209        struct page             **pagevec;
1210        unsigned int            npages;         /* Max length of pagevec */
1211        struct page             *page_array[NFS_PAGEVEC_SIZE];
1212};
1213
1214struct nfs_read_data {
1215        struct nfs_pgio_header  *header;
1216        struct list_head        list;
1217        struct rpc_task         task;
1218        struct nfs_fattr        fattr;  /* fattr storage */
1219        struct nfs_readargs args;
1220        struct nfs_readres  res;
1221        unsigned long           timestamp;      /* For lease renewal */
1222        int (*read_done_cb) (struct rpc_task *task, struct nfs_read_data *data);
1223        __u64                   mds_offset;
1224        struct nfs_page_array   pages;
1225        struct nfs_client       *ds_clp;        /* pNFS data server */
1226};
1227
1228/* used as flag bits in nfs_pgio_header */
1229enum {
1230        NFS_IOHDR_ERROR = 0,
1231        NFS_IOHDR_EOF,
1232        NFS_IOHDR_REDO,
1233        NFS_IOHDR_NEED_COMMIT,
1234        NFS_IOHDR_NEED_RESCHED,
1235};
1236
1237struct nfs_pgio_header {
1238        struct inode            *inode;
1239        struct rpc_cred         *cred;
1240        struct list_head        pages;
1241        struct list_head        rpc_list;
1242        atomic_t                refcnt;
1243        struct nfs_page         *req;
1244        struct nfs_writeverf    *verf;
1245        struct pnfs_layout_segment *lseg;
1246        loff_t                  io_start;
1247        const struct rpc_call_ops *mds_ops;
1248        void (*release) (struct nfs_pgio_header *hdr);
1249        const struct nfs_pgio_completion_ops *completion_ops;
1250        struct nfs_direct_req   *dreq;
1251        void                    *layout_private;
1252        spinlock_t              lock;
1253        /* fields protected by lock */
1254        int                     pnfs_error;
1255        int                     error;          /* merge with pnfs_error */
1256        unsigned long           good_bytes;     /* boundary of good data */
1257        unsigned long           flags;
1258};
1259
1260struct nfs_read_header {
1261        struct nfs_pgio_header  header;
1262        struct nfs_read_data    rpc_data;
1263};
1264
1265struct nfs_write_data {
1266        struct nfs_pgio_header  *header;
1267        struct list_head        list;
1268        struct rpc_task         task;
1269        struct nfs_fattr        fattr;
1270        struct nfs_writeverf    verf;
1271        struct nfs_writeargs    args;           /* argument struct */
1272        struct nfs_writeres     res;            /* result struct */
1273        unsigned long           timestamp;      /* For lease renewal */
1274        int (*write_done_cb) (struct rpc_task *task, struct nfs_write_data *data);
1275        __u64                   mds_offset;     /* Filelayout dense stripe */
1276        struct nfs_page_array   pages;
1277        struct nfs_client       *ds_clp;        /* pNFS data server */
1278};
1279
1280struct nfs_write_header {
1281        struct nfs_pgio_header  header;
1282        struct nfs_write_data   rpc_data;
1283        struct nfs_writeverf    verf;
1284};
1285
1286struct nfs_mds_commit_info {
1287        atomic_t rpcs_out;
1288        unsigned long           ncommit;
1289        struct list_head        list;
1290};
1291
1292struct nfs_commit_data;
1293struct nfs_inode;
1294struct nfs_commit_completion_ops {
1295        void (*error_cleanup) (struct nfs_inode *nfsi);
1296        void (*completion) (struct nfs_commit_data *data);
1297};
1298
1299struct nfs_commit_info {
1300        spinlock_t                      *lock;
1301        struct nfs_mds_commit_info      *mds;
1302        struct pnfs_ds_commit_info      *ds;
1303        struct nfs_direct_req           *dreq;  /* O_DIRECT request */
1304        const struct nfs_commit_completion_ops *completion_ops;
1305};
1306
1307struct nfs_commit_data {
1308        struct rpc_task         task;
1309        struct inode            *inode;
1310        struct rpc_cred         *cred;
1311        struct nfs_fattr        fattr;
1312        struct nfs_writeverf    verf;
1313        struct list_head        pages;          /* Coalesced requests we wish to flush */
1314        struct list_head        list;           /* lists of struct nfs_write_data */
1315        struct nfs_direct_req   *dreq;          /* O_DIRECT request */
1316        struct nfs_commitargs   args;           /* argument struct */
1317        struct nfs_commitres    res;            /* result struct */
1318        struct nfs_open_context *context;
1319        struct pnfs_layout_segment *lseg;
1320        struct nfs_client       *ds_clp;        /* pNFS data server */
1321        int                     ds_commit_index;
1322        const struct rpc_call_ops *mds_ops;
1323        const struct nfs_commit_completion_ops *completion_ops;
1324        int (*commit_done_cb) (struct rpc_task *task, struct nfs_commit_data *data);
1325};
1326
1327struct nfs_pgio_completion_ops {
1328        void    (*error_cleanup)(struct list_head *head);
1329        void    (*init_hdr)(struct nfs_pgio_header *hdr);
1330        void    (*completion)(struct nfs_pgio_header *hdr);
1331};
1332
1333struct nfs_unlinkdata {
1334        struct hlist_node list;
1335        struct nfs_removeargs args;
1336        struct nfs_removeres res;
1337        struct inode *dir;
1338        struct rpc_cred *cred;
1339        struct nfs_fattr dir_attr;
1340};
1341
1342struct nfs_renamedata {
1343        struct nfs_renameargs   args;
1344        struct nfs_renameres    res;
1345        struct rpc_cred         *cred;
1346        struct inode            *old_dir;
1347        struct dentry           *old_dentry;
1348        struct nfs_fattr        old_fattr;
1349        struct inode            *new_dir;
1350        struct dentry           *new_dentry;
1351        struct nfs_fattr        new_fattr;
1352};
1353
1354struct nfs_access_entry;
1355struct nfs_client;
1356struct rpc_timeout;
1357struct nfs_subversion;
1358struct nfs_mount_info;
1359struct nfs_client_initdata;
1360struct nfs_pageio_descriptor;
1361
1362/*
1363 * RPC procedure vector for NFSv2/NFSv3 demuxing
1364 */
1365struct nfs_rpc_ops {
1366        u32     version;                /* Protocol version */
1367        const struct dentry_operations *dentry_ops;
1368        const struct inode_operations *dir_inode_ops;
1369        const struct inode_operations *file_inode_ops;
1370        const struct file_operations *file_ops;
1371
1372        int     (*getroot) (struct nfs_server *, struct nfs_fh *,
1373                            struct nfs_fsinfo *);
1374        struct vfsmount *(*submount) (struct nfs_server *, struct dentry *,
1375                                      struct nfs_fh *, struct nfs_fattr *);
1376        struct dentry *(*try_mount) (int, const char *, struct nfs_mount_info *,
1377                                     struct nfs_subversion *);
1378        int     (*getattr) (struct nfs_server *, struct nfs_fh *,
1379                            struct nfs_fattr *);
1380        int     (*setattr) (struct dentry *, struct nfs_fattr *,
1381                            struct iattr *);
1382        int     (*lookup)  (struct inode *, struct qstr *,
1383                            struct nfs_fh *, struct nfs_fattr *);
1384        int     (*access)  (struct inode *, struct nfs_access_entry *);
1385        int     (*readlink)(struct inode *, struct page *, unsigned int,
1386                            unsigned int);
1387        int     (*create)  (struct inode *, struct dentry *,
1388                            struct iattr *, int);
1389        int     (*remove)  (struct inode *, struct qstr *);
1390        void    (*unlink_setup)  (struct rpc_message *, struct inode *dir);
1391        void    (*unlink_rpc_prepare) (struct rpc_task *, struct nfs_unlinkdata *);
1392        int     (*unlink_done) (struct rpc_task *, struct inode *);
1393        int     (*rename)  (struct inode *, struct qstr *,
1394                            struct inode *, struct qstr *);
1395        void    (*rename_setup)  (struct rpc_message *msg, struct inode *dir);
1396        void    (*rename_rpc_prepare)(struct rpc_task *task, struct nfs_renamedata *);
1397        int     (*rename_done) (struct rpc_task *task, struct inode *old_dir, struct inode *new_dir);
1398        int     (*link)    (struct inode *, struct inode *, struct qstr *);
1399        int     (*symlink) (struct inode *, struct dentry *, struct page *,
1400                            unsigned int, struct iattr *);
1401        int     (*mkdir)   (struct inode *, struct dentry *, struct iattr *);
1402        int     (*rmdir)   (struct inode *, struct qstr *);
1403        int     (*readdir) (struct dentry *, struct rpc_cred *,
1404                            u64, struct page **, unsigned int, int);
1405        int     (*mknod)   (struct inode *, struct dentry *, struct iattr *,
1406                            dev_t);
1407        int     (*statfs)  (struct nfs_server *, struct nfs_fh *,
1408                            struct nfs_fsstat *);
1409        int     (*fsinfo)  (struct nfs_server *, struct nfs_fh *,
1410                            struct nfs_fsinfo *);
1411        int     (*pathconf) (struct nfs_server *, struct nfs_fh *,
1412                             struct nfs_pathconf *);
1413        int     (*set_capabilities)(struct nfs_server *, struct nfs_fh *);
1414        int     (*decode_dirent)(struct xdr_stream *, struct nfs_entry *, int);
1415        void    (*read_setup)   (struct nfs_read_data *, struct rpc_message *);
1416        void    (*read_pageio_init)(struct nfs_pageio_descriptor *, struct inode *,
1417                                    const struct nfs_pgio_completion_ops *);
1418        void    (*read_rpc_prepare)(struct rpc_task *, struct nfs_read_data *);
1419        int     (*read_done)  (struct rpc_task *, struct nfs_read_data *);
1420        void    (*write_setup)  (struct nfs_write_data *, struct rpc_message *);
1421        void    (*write_pageio_init)(struct nfs_pageio_descriptor *, struct inode *, int,
1422                                     const struct nfs_pgio_completion_ops *);
1423        void    (*write_rpc_prepare)(struct rpc_task *, struct nfs_write_data *);
1424        int     (*write_done)  (struct rpc_task *, struct nfs_write_data *);
1425        void    (*commit_setup) (struct nfs_commit_data *, struct rpc_message *);
1426        void    (*commit_rpc_prepare)(struct rpc_task *, struct nfs_commit_data *);
1427        int     (*commit_done) (struct rpc_task *, struct nfs_commit_data *);
1428        int     (*lock)(struct file *, int, struct file_lock *);
1429        int     (*lock_check_bounds)(const struct file_lock *);
1430        void    (*clear_acl_cache)(struct inode *);
1431        void    (*close_context)(struct nfs_open_context *ctx, int);
1432        struct inode * (*open_context) (struct inode *dir,
1433                                struct nfs_open_context *ctx,
1434                                int open_flags,
1435                                struct iattr *iattr);
1436        int (*have_delegation)(struct inode *, fmode_t);
1437        int (*return_delegation)(struct inode *);
1438        struct nfs_client *(*alloc_client) (const struct nfs_client_initdata *);
1439        struct nfs_client *
1440                (*init_client) (struct nfs_client *, const struct rpc_timeout *,
1441                                const char *, rpc_authflavor_t);
1442        void    (*free_client) (struct nfs_client *);
1443        struct nfs_server *(*create_server)(struct nfs_mount_info *, struct nfs_subversion *);
1444        struct nfs_server *(*clone_server)(struct nfs_server *, struct nfs_fh *,
1445                                           struct nfs_fattr *, rpc_authflavor_t);
1446};
1447
1448/*
1449 *      NFS_CALL(getattr, inode, (fattr));
1450 * into
1451 *      NFS_PROTO(inode)->getattr(fattr);
1452 */
1453#define NFS_CALL(op, inode, args)       NFS_PROTO(inode)->op args
1454
1455/*
1456 * Function vectors etc. for the NFS client
1457 */
1458extern const struct nfs_rpc_ops nfs_v2_clientops;
1459extern const struct nfs_rpc_ops nfs_v3_clientops;
1460extern const struct nfs_rpc_ops nfs_v4_clientops;
1461extern const struct rpc_version nfs_version2;
1462extern const struct rpc_version nfs_version3;
1463extern const struct rpc_version nfs_version4;
1464
1465extern const struct rpc_version nfsacl_version3;
1466extern const struct rpc_program nfsacl_program;
1467
1468#endif
1469
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