include/linux/nfs_xdr.h

   1 #ifndef _LINUX_NFS_XDR_H
   2 #define _LINUX_NFS_XDR_H
   3
   4 #include <linux/sunrpc/xprt.h>
   5 #include <linux/nfsacl.h>
   6
   7 /*
   8  * To change the maximum rsize and wsize supported by the NFS client, adjust
   9  * NFS_MAX_FILE_IO_SIZE.  64KB is a typical maximum, but some servers can
  10  * support a megabyte or more.  The default is left at 4096 bytes, which is
  11  * reasonable for NFS over UDP.
  12  */
  13 #define NFS_MAX_FILE_IO_SIZE    (1048576U)
  14 #define NFS_DEF_FILE_IO_SIZE    (4096U)
  15 #define NFS_MIN_FILE_IO_SIZE    (1024U)
  16
  17 struct nfs_fsid {
  18         uint64_t                major;
  19         uint64_t                minor;
  20 };
  21
  22 /*
  23  * Helper for checking equality between 2 fsids.
  24  */
  25 static inline int nfs_fsid_equal(const struct nfs_fsid *a, const struct nfs_fsid *b)
  26 {
  27         return a->major == b->major && a->minor == b->minor;
  28 }
  29
  30 struct nfs_fattr {
  31         unsigned short          valid;          /* which fields are valid */
  32         __u64                   pre_size;       /* pre_op_attr.size       */
  33         struct timespec         pre_mtime;      /* pre_op_attr.mtime      */
  34         struct timespec         pre_ctime;      /* pre_op_attr.ctime      */
  35         enum nfs_ftype          type;           /* always use NFSv2 types */
  36         __u32                   mode;
  37         __u32                   nlink;
  38         __u32                   uid;
  39         __u32                   gid;
  40         __u64                   size;
  41         union {
  42                 struct {
  43                         __u32   blocksize;
  44                         __u32   blocks;
  45                 } nfs2;
  46                 struct {
  47                         __u64   used;
  48                 } nfs3;
  49         } du;
  50         dev_t                   rdev;
  51         struct nfs_fsid         fsid;
  52         __u64                   fileid;
  53         struct timespec         atime;
  54         struct timespec         mtime;
  55         struct timespec         ctime;
  56         __u32                   bitmap[2];      /* NFSv4 returned attribute bitmap */
  57         __u64                   change_attr;    /* NFSv4 change attribute */
  58         __u64                   pre_change_attr;/* pre-op NFSv4 change attribute */
  59         unsigned long           time_start;
  60 };
  61
  62 #define NFS_ATTR_WCC            0x0001          /* pre-op WCC data    */
  63 #define NFS_ATTR_FATTR          0x0002          /* post-op attributes */
  64 #define NFS_ATTR_FATTR_V3       0x0004          /* NFSv3 attributes */
  65 #define NFS_ATTR_FATTR_V4       0x0008          /* NFSv4 change attribute */
  66 #define NFS_ATTR_FATTR_V4_REFERRAL      0x0010          /* NFSv4 referral */
  67
  68 /*
  69  * Info on the file system
  70  */
  71 struct nfs_fsinfo {
  72         struct nfs_fattr        *fattr; /* Post-op attributes */
  73         __u32                   rtmax;  /* max.  read transfer size */
  74         __u32                   rtpref; /* pref. read transfer size */
  75         __u32                   rtmult; /* reads should be multiple of this */
  76         __u32                   wtmax;  /* max.  write transfer size */
  77         __u32                   wtpref; /* pref. write transfer size */
  78         __u32                   wtmult; /* writes should be multiple of this */
  79         __u32                   dtpref; /* pref. readdir transfer size */
  80         __u64                   maxfilesize;
  81         __u32                   lease_time; /* in seconds */
  82 };
  83
  84 struct nfs_fsstat {
  85         struct nfs_fattr        *fattr; /* Post-op attributes */
  86         __u64                   tbytes; /* total size in bytes */
  87         __u64                   fbytes; /* # of free bytes */
  88         __u64                   abytes; /* # of bytes available to user */
  89         __u64                   tfiles; /* # of files */
  90         __u64                   ffiles; /* # of free files */
  91         __u64                   afiles; /* # of files available to user */
  92 };
  93
  94 struct nfs2_fsstat {
  95         __u32                   tsize;  /* Server transfer size */
  96         __u32                   bsize;  /* Filesystem block size */
  97         __u32                   blocks; /* No. of "bsize" blocks on filesystem */
  98         __u32                   bfree;  /* No. of free "bsize" blocks */
  99         __u32                   bavail; /* No. of available "bsize" blocks */
 100 };
 101
 102 struct nfs_pathconf {
 103         struct nfs_fattr        *fattr; /* Post-op attributes */
 104         __u32                   max_link; /* max # of hard links */
 105         __u32                   max_namelen; /* max name length */
 106 };
 107
 108 struct nfs4_change_info {
 109         u32                     atomic;
 110         u64                     before;
 111         u64                     after;
 112 };
 113
 114 struct nfs_seqid;
 115 /*
 116  * Arguments to the open call.
 117  */
 118 struct nfs_openargs {
 119         const struct nfs_fh *   fh;
 120         struct nfs_seqid *      seqid;
 121         int                     open_flags;
 122         __u64                   clientid;
 123         __u32                   id;
 124         union {
 125                 struct iattr *  attrs;    /* UNCHECKED, GUARDED */
 126                 nfs4_verifier   verifier; /* EXCLUSIVE */
 127                 nfs4_stateid    delegation;             /* CLAIM_DELEGATE_CUR */
 128                 int             delegation_type;        /* CLAIM_PREVIOUS */
 129         } u;
 130         const struct qstr *     name;
 131         const struct nfs_server *server;         /* Needed for ID mapping */
 132         const u32 *             bitmask;
 133         __u32                   claim;
 134 };
 135
 136 struct nfs_openres {
 137         nfs4_stateid            stateid;
 138         struct nfs_fh           fh;
 139         struct nfs4_change_info cinfo;
 140         __u32                   rflags;
 141         struct nfs_fattr *      f_attr;
 142         struct nfs_fattr *      dir_attr;
 143         const struct nfs_server *server;
 144         int                     delegation_type;
 145         nfs4_stateid            delegation;
 146         __u32                   do_recall;
 147         __u64                   maxsize;
 148 };
 149
 150 /*
 151  * Arguments to the open_confirm call.
 152  */
 153 struct nfs_open_confirmargs {
 154         const struct nfs_fh *   fh;
 155         nfs4_stateid *          stateid;
 156         struct nfs_seqid *      seqid;
 157 };
 158
 159 struct nfs_open_confirmres {
 160         nfs4_stateid            stateid;
 161 };
 162
 163 /*
 164  * Arguments to the close call.
 165  */
 166 struct nfs_closeargs {
 167         struct nfs_fh *         fh;
 168         nfs4_stateid *          stateid;
 169         struct nfs_seqid *      seqid;
 170         int                     open_flags;
 171         const u32 *             bitmask;
 172 };
 173
 174 struct nfs_closeres {
 175         nfs4_stateid            stateid;
 176         struct nfs_fattr *      fattr;
 177         const struct nfs_server *server;
 178 };
 179 /*
 180  *  * Arguments to the lock,lockt, and locku call.
 181  *   */
 182 struct nfs_lowner {
 183         __u64                   clientid;
 184         u32                     id;
 185 };
 186
 187 struct nfs_lock_args {
 188         struct nfs_fh *         fh;
 189         struct file_lock *      fl;
 190         struct nfs_seqid *      lock_seqid;
 191         nfs4_stateid *          lock_stateid;
 192         struct nfs_seqid *      open_seqid;
 193         nfs4_stateid *          open_stateid;
 194         struct nfs_lowner       lock_owner;
 195         unsigned char           block : 1;
 196         unsigned char           reclaim : 1;
 197         unsigned char           new_lock_owner : 1;
 198 };
 199
 200 struct nfs_lock_res {
 201         nfs4_stateid                    stateid;
 202 };
 203
 204 struct nfs_locku_args {
 205         struct nfs_fh *         fh;
 206         struct file_lock *      fl;
 207         struct nfs_seqid *      seqid;
 208         nfs4_stateid *          stateid;
 209 };
 210
 211 struct nfs_locku_res {
 212         nfs4_stateid                    stateid;
 213 };
 214
 215 struct nfs_lockt_args {
 216         struct nfs_fh *         fh;
 217         struct file_lock *      fl;
 218         struct nfs_lowner       lock_owner;
 219 };
 220
 221 struct nfs_lockt_res {
 222         struct file_lock *      denied; /* LOCK, LOCKT failed */
 223 };
 224
 225 struct nfs4_delegreturnargs {
 226         const struct nfs_fh *fhandle;
 227         const nfs4_stateid *stateid;
 228         const u32 * bitmask;
 229 };
 230
 231 struct nfs4_delegreturnres {
 232         struct nfs_fattr * fattr;
 233         const struct nfs_server *server;
 234 };
 235
 236 /*
 237  * Arguments to the read call.
 238  */
 239 struct nfs_readargs {
 240         struct nfs_fh *         fh;
 241         struct nfs_open_context *context;
 242         __u64                   offset;
 243         __u32                   count;
 244         unsigned int            pgbase;
 245         struct page **          pages;
 246 };
 247
 248 struct nfs_readres {
 249         struct nfs_fattr *      fattr;
 250         __u32                   count;
 251         int                     eof;
 252 };
 253
 254 /*
 255  * Arguments to the write call.
 256  */
 257 struct nfs_writeargs {
 258         struct nfs_fh *         fh;
 259         struct nfs_open_context *context;
 260         __u64                   offset;
 261         __u32                   count;
 262         enum nfs3_stable_how    stable;
 263         unsigned int            pgbase;
 264         struct page **          pages;
 265         const u32 *             bitmask;
 266 };
 267
 268 struct nfs_writeverf {
 269         enum nfs3_stable_how    committed;
 270         __u32                   verifier[2];
 271 };
 272
 273 struct nfs_writeres {
 274         struct nfs_fattr *      fattr;
 275         struct nfs_writeverf *  verf;
 276         __u32                   count;
 277         const struct nfs_server *server;
 278 };
 279
 280 /*
 281  * Argument struct for decode_entry function
 282  */
 283 struct nfs_entry {
 284         __u64                   ino;
 285         __u64                   cookie,
 286                                 prev_cookie;
 287         const char *            name;
 288         unsigned int            len;
 289         int                     eof;
 290         struct nfs_fh *         fh;
 291         struct nfs_fattr *      fattr;
 292 };
 293
 294 /*
 295  * The following types are for NFSv2 only.
 296  */
 297 struct nfs_sattrargs {
 298         struct nfs_fh *         fh;
 299         struct iattr *          sattr;
 300 };
 301
 302 struct nfs_diropargs {
 303         struct nfs_fh *         fh;
 304         const char *            name;
 305         unsigned int            len;
 306 };
 307
 308 struct nfs_createargs {
 309         struct nfs_fh *         fh;
 310         const char *            name;
 311         unsigned int            len;
 312         struct iattr *          sattr;
 313 };
 314
 315 struct nfs_renameargs {
 316         struct nfs_fh *         fromfh;
 317         const char *            fromname;
 318         unsigned int            fromlen;
 319         struct nfs_fh *         tofh;
 320         const char *            toname;
 321         unsigned int            tolen;
 322 };
 323
 324 struct nfs_setattrargs {
 325         struct nfs_fh *                 fh;
 326         nfs4_stateid                    stateid;
 327         struct iattr *                  iap;
 328         const struct nfs_server *       server; /* Needed for name mapping */
 329         const u32 *                     bitmask;
 330 };
 331
 332 struct nfs_setaclargs {
 333         struct nfs_fh *                 fh;
 334         size_t                          acl_len;
 335         unsigned int                    acl_pgbase;
 336         struct page **                  acl_pages;
 337 };
 338
 339 struct nfs_getaclargs {
 340         struct nfs_fh *                 fh;
 341         size_t                          acl_len;
 342         unsigned int                    acl_pgbase;
 343         struct page **                  acl_pages;
 344 };
 345
 346 struct nfs_setattrres {
 347         struct nfs_fattr *              fattr;
 348         const struct nfs_server *       server;
 349 };
 350
 351 struct nfs_linkargs {
 352         struct nfs_fh *         fromfh;
 353         struct nfs_fh *         tofh;
 354         const char *            toname;
 355         unsigned int            tolen;
 356 };
 357
 358 struct nfs_symlinkargs {
 359         struct nfs_fh *         fromfh;
 360         const char *            fromname;
 361         unsigned int            fromlen;
 362         const char *            topath;
 363         unsigned int            tolen;
 364         struct iattr *          sattr;
 365 };
 366
 367 struct nfs_readdirargs {
 368         struct nfs_fh *         fh;
 369         __u32                   cookie;
 370         unsigned int            count;
 371         struct page **          pages;
 372 };
 373
 374 struct nfs3_getaclargs {
 375         struct nfs_fh *         fh;
 376         int                     mask;
 377         struct page **          pages;
 378 };
 379
 380 struct nfs3_setaclargs {
 381         struct inode *          inode;
 382         int                     mask;
 383         struct posix_acl *      acl_access;
 384         struct posix_acl *      acl_default;
 385         struct page **          pages;
 386 };
 387
 388 struct nfs_diropok {
 389         struct nfs_fh *         fh;
 390         struct nfs_fattr *      fattr;
 391 };
 392
 393 struct nfs_readlinkargs {
 394         struct nfs_fh *         fh;
 395         unsigned int            pgbase;
 396         unsigned int            pglen;
 397         struct page **          pages;
 398 };
 399
 400 struct nfs3_sattrargs {
 401         struct nfs_fh *         fh;
 402         struct iattr *          sattr;
 403         unsigned int            guard;
 404         struct timespec         guardtime;
 405 };
 406
 407 struct nfs3_diropargs {
 408         struct nfs_fh *         fh;
 409         const char *            name;
 410         unsigned int            len;
 411 };
 412
 413 struct nfs3_accessargs {
 414         struct nfs_fh *         fh;
 415         __u32                   access;
 416 };
 417
 418 struct nfs3_createargs {
 419         struct nfs_fh *         fh;
 420         const char *            name;
 421         unsigned int            len;
 422         struct iattr *          sattr;
 423         enum nfs3_createmode    createmode;
 424         __u32                   verifier[2];
 425 };
 426
 427 struct nfs3_mkdirargs {
 428         struct nfs_fh *         fh;
 429         const char *            name;
 430         unsigned int            len;
 431         struct iattr *          sattr;
 432 };
 433
 434 struct nfs3_symlinkargs {
 435         struct nfs_fh *         fromfh;
 436         const char *            fromname;
 437         unsigned int            fromlen;
 438         const char *            topath;
 439         unsigned int            tolen;
 440         struct iattr *          sattr;
 441 };
 442
 443 struct nfs3_mknodargs {
 444         struct nfs_fh *         fh;
 445         const char *            name;
 446         unsigned int            len;
 447         enum nfs3_ftype         type;
 448         struct iattr *          sattr;
 449         dev_t                   rdev;
 450 };
 451
 452 struct nfs3_renameargs {
 453         struct nfs_fh *         fromfh;
 454         const char *            fromname;
 455         unsigned int            fromlen;
 456         struct nfs_fh *         tofh;
 457         const char *            toname;
 458         unsigned int            tolen;
 459 };
 460
 461 struct nfs3_linkargs {
 462         struct nfs_fh *         fromfh;
 463         struct nfs_fh *         tofh;
 464         const char *            toname;
 465         unsigned int            tolen;
 466 };
 467
 468 struct nfs3_readdirargs {
 469         struct nfs_fh *         fh;
 470         __u64                   cookie;
 471         __u32                   verf[2];
 472         int                     plus;
 473         unsigned int            count;
 474         struct page **          pages;
 475 };
 476
 477 struct nfs3_diropres {
 478         struct nfs_fattr *      dir_attr;
 479         struct nfs_fh *         fh;
 480         struct nfs_fattr *      fattr;
 481 };
 482
 483 struct nfs3_accessres {
 484         struct nfs_fattr *      fattr;
 485         __u32                   access;
 486 };
 487
 488 struct nfs3_readlinkargs {
 489         struct nfs_fh *         fh;
 490         unsigned int            pgbase;
 491         unsigned int            pglen;
 492         struct page **          pages;
 493 };
 494
 495 struct nfs3_renameres {
 496         struct nfs_fattr *      fromattr;
 497         struct nfs_fattr *      toattr;
 498 };
 499
 500 struct nfs3_linkres {
 501         struct nfs_fattr *      dir_attr;
 502         struct nfs_fattr *      fattr;
 503 };
 504
 505 struct nfs3_readdirres {
 506         struct nfs_fattr *      dir_attr;
 507         __u32 *                 verf;
 508         int                     plus;
 509 };
 510
 511 struct nfs3_getaclres {
 512         struct nfs_fattr *      fattr;
 513         int                     mask;
 514         unsigned int            acl_access_count;
 515         unsigned int            acl_default_count;
 516         struct posix_acl *      acl_access;
 517         struct posix_acl *      acl_default;
 518 };
 519
 520 #ifdef CONFIG_NFS_V4
 521
 522 typedef u64 clientid4;
 523
 524 struct nfs4_accessargs {
 525         const struct nfs_fh *           fh;
 526         u32                             access;
 527 };
 528
 529 struct nfs4_accessres {
 530         u32                             supported;
 531         u32                             access;
 532 };
 533
 534 struct nfs4_create_arg {
 535         u32                             ftype;
 536         union {
 537                 struct qstr *           symlink;    /* NF4LNK */
 538                 struct {
 539                         u32             specdata1;
 540                         u32             specdata2;
 541                 } device;    /* NF4BLK, NF4CHR */
 542         } u;
 543         const struct qstr *             name;
 544         const struct nfs_server *       server;
 545         const struct iattr *            attrs;
 546         const struct nfs_fh *           dir_fh;
 547         const u32 *                     bitmask;
 548 };
 549
 550 struct nfs4_create_res {
 551         const struct nfs_server *       server;
 552         struct nfs_fh *                 fh;
 553         struct nfs_fattr *              fattr;
 554         struct nfs4_change_info         dir_cinfo;
 555         struct nfs_fattr *              dir_fattr;
 556 };
 557
 558 struct nfs4_fsinfo_arg {
 559         const struct nfs_fh *           fh;
 560         const u32 *                     bitmask;
 561 };
 562
 563 struct nfs4_getattr_arg {
 564         const struct nfs_fh *           fh;
 565         const u32 *                     bitmask;
 566 };
 567
 568 struct nfs4_getattr_res {
 569         const struct nfs_server *       server;
 570         struct nfs_fattr *              fattr;
 571 };
 572
 573 struct nfs4_link_arg {
 574         const struct nfs_fh *           fh;
 575         const struct nfs_fh *           dir_fh;
 576         const struct qstr *             name;
 577         const u32 *                     bitmask;
 578 };
 579
 580 struct nfs4_link_res {
 581         const struct nfs_server *       server;
 582         struct nfs_fattr *              fattr;
 583         struct nfs4_change_info         cinfo;
 584         struct nfs_fattr *              dir_attr;
 585 };
 586
 587
 588 struct nfs4_lookup_arg {
 589         const struct nfs_fh *           dir_fh;
 590         const struct qstr *             name;
 591         const u32 *                     bitmask;
 592 };
 593
 594 struct nfs4_lookup_res {
 595         const struct nfs_server *       server;
 596         struct nfs_fattr *              fattr;
 597         struct nfs_fh *                 fh;
 598 };
 599
 600 struct nfs4_lookup_root_arg {
 601         const u32 *                     bitmask;
 602 };
 603
 604 struct nfs4_pathconf_arg {
 605         const struct nfs_fh *           fh;
 606         const u32 *                     bitmask;
 607 };
 608
 609 struct nfs4_readdir_arg {
 610         const struct nfs_fh *           fh;
 611         u64                             cookie;
 612         nfs4_verifier                   verifier;
 613         u32                             count;
 614         struct page **                  pages;  /* zero-copy data */
 615         unsigned int                    pgbase; /* zero-copy data */
 616         const u32 *                     bitmask;
 617 };
 618
 619 struct nfs4_readdir_res {
 620         nfs4_verifier                   verifier;
 621         unsigned int                    pgbase;
 622 };
 623
 624 struct nfs4_readlink {
 625         const struct nfs_fh *           fh;
 626         unsigned int                    pgbase;
 627         unsigned int                    pglen;   /* zero-copy data */
 628         struct page **                  pages;   /* zero-copy data */
 629 };
 630
 631 struct nfs4_remove_arg {
 632         const struct nfs_fh *           fh;
 633         const struct qstr *             name;
 634         const u32 *                     bitmask;
 635 };
 636
 637 struct nfs4_remove_res {
 638         const struct nfs_server *       server;
 639         struct nfs4_change_info         cinfo;
 640         struct nfs_fattr *              dir_attr;
 641 };
 642
 643 struct nfs4_rename_arg {
 644         const struct nfs_fh *           old_dir;
 645         const struct nfs_fh *           new_dir;
 646         const struct qstr *             old_name;
 647         const struct qstr *             new_name;
 648         const u32 *                     bitmask;
 649 };
 650
 651 struct nfs4_rename_res {
 652         const struct nfs_server *       server;
 653         struct nfs4_change_info         old_cinfo;
 654         struct nfs_fattr *              old_fattr;
 655         struct nfs4_change_info         new_cinfo;
 656         struct nfs_fattr *              new_fattr;
 657 };
 658
 659 struct nfs4_setclientid {
 660         const nfs4_verifier *           sc_verifier;      /* request */
 661         unsigned int                    sc_name_len;
 662         char                            sc_name[32];      /* request */
 663         u32                             sc_prog;          /* request */
 664         unsigned int                    sc_netid_len;
 665         char                            sc_netid[4];      /* request */
 666         unsigned int                    sc_uaddr_len;
 667         char                            sc_uaddr[24];     /* request */
 668         u32                             sc_cb_ident;      /* request */
 669 };
 670
 671 struct nfs4_statfs_arg {
 672         const struct nfs_fh *           fh;
 673         const u32 *                     bitmask;
 674 };
 675
 676 struct nfs4_server_caps_res {
 677         u32                             attr_bitmask[2];
 678         u32                             acl_bitmask;
 679         u32                             has_links;
 680         u32                             has_symlinks;
 681 };
 682
 683 struct nfs4_string {
 684         unsigned int len;
 685         char *data;
 686 };
 687
 688 #define NFS4_PATHNAME_MAXCOMPONENTS 512
 689 struct nfs4_pathname {
 690         unsigned int ncomponents;
 691         struct nfs4_string components[NFS4_PATHNAME_MAXCOMPONENTS];
 692 };
 693
 694 #define NFS4_FS_LOCATION_MAXSERVERS 10
 695 struct nfs4_fs_location {
 696         unsigned int nservers;
 697         struct nfs4_string servers[NFS4_FS_LOCATION_MAXSERVERS];
 698         struct nfs4_pathname rootpath;
 699 };
 700
 701 #define NFS4_FS_LOCATIONS_MAXENTRIES 10
 702 struct nfs4_fs_locations {
 703         struct nfs_fattr fattr;
 704         const struct nfs_server *server;
 705         struct nfs4_pathname fs_path;
 706         int nlocations;
 707         struct nfs4_fs_location locations[NFS4_FS_LOCATIONS_MAXENTRIES];
 708 };
 709
 710 struct nfs4_fs_locations_arg {
 711         const struct nfs_fh *dir_fh;
 712         const struct qstr *name;
 713         struct page *page;
 714         const u32 *bitmask;
 715 };
 716
 717 #endif /* CONFIG_NFS_V4 */
 718
 719 struct nfs_page;
 720
 721 #define NFS_PAGEVEC_SIZE        (8U)
 722
 723 struct nfs_read_data {
 724         int                     flags;
 725         struct rpc_task         task;
 726         struct inode            *inode;
 727         struct rpc_cred         *cred;
 728         struct nfs_fattr        fattr;  /* fattr storage */
 729         struct list_head        pages;  /* Coalesced read requests */
 730         struct nfs_page         *req;   /* multi ops per nfs_page */
 731         struct page             **pagevec;
 732         struct nfs_readargs args;
 733         struct nfs_readres  res;
 734 #ifdef CONFIG_NFS_V4
 735         unsigned long           timestamp;      /* For lease renewal */
 736 #endif
 737         struct page             *page_array[NFS_PAGEVEC_SIZE];
 738 };
 739
 740 struct nfs_write_data {
 741         int                     flags;
 742         struct rpc_task         task;
 743         struct inode            *inode;
 744         struct rpc_cred         *cred;
 745         struct nfs_fattr        fattr;
 746         struct nfs_writeverf    verf;
 747         struct list_head        pages;          /* Coalesced requests we wish to flush */
 748         struct nfs_page         *req;           /* multi ops per nfs_page */
 749         struct page             **pagevec;
 750         struct nfs_writeargs    args;           /* argument struct */
 751         struct nfs_writeres     res;            /* result struct */
 752 #ifdef CONFIG_NFS_V4
 753         unsigned long           timestamp;      /* For lease renewal */
 754 #endif
 755         struct page             *page_array[NFS_PAGEVEC_SIZE];
 756 };
 757
 758 struct nfs_access_entry;
 759
 760 /*
 761  * RPC procedure vector for NFSv2/NFSv3 demuxing
 762  */
 763 struct nfs_rpc_ops {
 764         int     version;                /* Protocol version */
 765         struct dentry_operations *dentry_ops;
 766         struct inode_operations *dir_inode_ops;
 767         struct inode_operations *file_inode_ops;
 768
 769         int     (*getroot) (struct nfs_server *, struct nfs_fh *,
 770                             struct nfs_fsinfo *);
 771         int     (*getattr) (struct nfs_server *, struct nfs_fh *,
 772                             struct nfs_fattr *);
 773         int     (*setattr) (struct dentry *, struct nfs_fattr *,
 774                             struct iattr *);
 775         int     (*lookup)  (struct inode *, struct qstr *,
 776                             struct nfs_fh *, struct nfs_fattr *);
 777         int     (*access)  (struct inode *, struct nfs_access_entry *);
 778         int     (*readlink)(struct inode *, struct page *, unsigned int,
 779                             unsigned int);
 780         int     (*read)    (struct nfs_read_data *);
 781         int     (*write)   (struct nfs_write_data *);
 782         int     (*commit)  (struct nfs_write_data *);
 783         int     (*create)  (struct inode *, struct dentry *,
 784                             struct iattr *, int, struct nameidata *);
 785         int     (*remove)  (struct inode *, struct qstr *);
 786         int     (*unlink_setup)  (struct rpc_message *,
 787                             struct dentry *, struct qstr *);
 788         int     (*unlink_done) (struct dentry *, struct rpc_task *);
 789         int     (*rename)  (struct inode *, struct qstr *,
 790                             struct inode *, struct qstr *);
 791         int     (*link)    (struct inode *, struct inode *, struct qstr *);
 792         int     (*symlink) (struct inode *, struct qstr *, struct qstr *,
 793                             struct iattr *, struct nfs_fh *,
 794                             struct nfs_fattr *);
 795         int     (*mkdir)   (struct inode *, struct dentry *, struct iattr *);
 796         int     (*rmdir)   (struct inode *, struct qstr *);
 797         int     (*readdir) (struct dentry *, struct rpc_cred *,
 798                             u64, struct page *, unsigned int, int);
 799         int     (*mknod)   (struct inode *, struct dentry *, struct iattr *,
 800                             dev_t);
 801         int     (*statfs)  (struct nfs_server *, struct nfs_fh *,
 802                             struct nfs_fsstat *);
 803         int     (*fsinfo)  (struct nfs_server *, struct nfs_fh *,
 804                             struct nfs_fsinfo *);
 805         int     (*pathconf) (struct nfs_server *, struct nfs_fh *,
 806                              struct nfs_pathconf *);
 807         u32 *   (*decode_dirent)(u32 *, struct nfs_entry *, int plus);
 808         void    (*read_setup)   (struct nfs_read_data *);
 809         int     (*read_done)  (struct rpc_task *, struct nfs_read_data *);
 810         void    (*write_setup)  (struct nfs_write_data *, int how);
 811         int     (*write_done)  (struct rpc_task *, struct nfs_write_data *);
 812         void    (*commit_setup) (struct nfs_write_data *, int how);
 813         int     (*commit_done) (struct rpc_task *, struct nfs_write_data *);
 814         int     (*file_open)   (struct inode *, struct file *);
 815         int     (*file_release) (struct inode *, struct file *);
 816         int     (*lock)(struct file *, int, struct file_lock *);
 817         void    (*clear_acl_cache)(struct inode *);
 818 };
 819
 820 /*
 821  *      NFS_CALL(getattr, inode, (fattr));
 822  * into
 823  *      NFS_PROTO(inode)->getattr(fattr);
 824  */
 825 #define NFS_CALL(op, inode, args)       NFS_PROTO(inode)->op args
 826
 827 /*
 828  * Function vectors etc. for the NFS client
 829  */
 830 extern struct nfs_rpc_ops       nfs_v2_clientops;
 831 extern struct nfs_rpc_ops       nfs_v3_clientops;
 832 extern struct nfs_rpc_ops       nfs_v4_clientops;
 833 extern struct rpc_version       nfs_version2;
 834 extern struct rpc_version       nfs_version3;
 835 extern struct rpc_version       nfs_version4;
 836
 837 extern struct rpc_version       nfsacl_version3;
 838 extern struct rpc_program       nfsacl_program;
 839
 840 #endif