include/linux/nfs_xdr.h

   1 #ifndef _LINUX_NFS_XDR_H
   2 #define _LINUX_NFS_XDR_H
   3
   4 #include <linux/nfsacl.h>
   5
   6 /*
   7  * To change the maximum rsize and wsize supported by the NFS client, adjust
   8  * NFS_MAX_FILE_IO_SIZE.  64KB is a typical maximum, but some servers can
   9  * support a megabyte or more.  The default is left at 4096 bytes, which is
  10  * reasonable for NFS over UDP.
  11  */
  12 #define NFS_MAX_FILE_IO_SIZE    (1048576U)
  13 #define NFS_DEF_FILE_IO_SIZE    (4096U)
  14 #define NFS_MIN_FILE_IO_SIZE    (1024U)
  15
  16 struct nfs_fsid {
  17         uint64_t                major;
  18         uint64_t                minor;
  19 };
  20
  21 /*
  22  * Helper for checking equality between 2 fsids.
  23  */
  24 static inline int nfs_fsid_equal(const struct nfs_fsid *a, const struct nfs_fsid *b)
  25 {
  26         return a->major == b->major && a->minor == b->minor;
  27 }
  28
  29 struct nfs_fattr {
  30         unsigned short          valid;          /* which fields are valid */
  31         __u64                   pre_size;       /* pre_op_attr.size       */
  32         struct timespec         pre_mtime;      /* pre_op_attr.mtime      */
  33         struct timespec         pre_ctime;      /* pre_op_attr.ctime      */
  34         enum nfs_ftype          type;           /* always use NFSv2 types */
  35         __u32                   mode;
  36         __u32                   nlink;
  37         __u32                   uid;
  38         __u32                   gid;
  39         __u64                   size;
  40         union {
  41                 struct {
  42                         __u32   blocksize;
  43                         __u32   blocks;
  44                 } nfs2;
  45                 struct {
  46                         __u64   used;
  47                 } nfs3;
  48         } du;
  49         dev_t                   rdev;
  50         struct nfs_fsid         fsid;
  51         __u64                   fileid;
  52         struct timespec         atime;
  53         struct timespec         mtime;
  54         struct timespec         ctime;
  55         __u32                   bitmap[2];      /* NFSv4 returned attribute bitmap */
  56         __u64                   change_attr;    /* NFSv4 change attribute */
  57         __u64                   pre_change_attr;/* pre-op NFSv4 change attribute */
  58         unsigned long           time_start;
  59 };
  60
  61 #define NFS_ATTR_WCC            0x0001          /* pre-op WCC data    */
  62 #define NFS_ATTR_FATTR          0x0002          /* post-op attributes */
  63 #define NFS_ATTR_FATTR_V3       0x0004          /* NFSv3 attributes */
  64 #define NFS_ATTR_FATTR_V4       0x0008          /* NFSv4 change attribute */
  65 #define NFS_ATTR_FATTR_V4_REFERRAL      0x0010          /* NFSv4 referral */
  66
  67 /*
  68  * Info on the file system
  69  */
  70 struct nfs_fsinfo {
  71         struct nfs_fattr        *fattr; /* Post-op attributes */
  72         __u32                   rtmax;  /* max.  read transfer size */
  73         __u32                   rtpref; /* pref. read transfer size */
  74         __u32                   rtmult; /* reads should be multiple of this */
  75         __u32                   wtmax;  /* max.  write transfer size */
  76         __u32                   wtpref; /* pref. write transfer size */
  77         __u32                   wtmult; /* writes should be multiple of this */
  78         __u32                   dtpref; /* pref. readdir transfer size */
  79         __u64                   maxfilesize;
  80         __u32                   lease_time; /* in seconds */
  81 };
  82
  83 struct nfs_fsstat {
  84         struct nfs_fattr        *fattr; /* Post-op attributes */
  85         __u64                   tbytes; /* total size in bytes */
  86         __u64                   fbytes; /* # of free bytes */
  87         __u64                   abytes; /* # of bytes available to user */
  88         __u64                   tfiles; /* # of files */
  89         __u64                   ffiles; /* # of free files */
  90         __u64                   afiles; /* # of files available to user */
  91 };
  92
  93 struct nfs2_fsstat {
  94         __u32                   tsize;  /* Server transfer size */
  95         __u32                   bsize;  /* Filesystem block size */
  96         __u32                   blocks; /* No. of "bsize" blocks on filesystem */
  97         __u32                   bfree;  /* No. of free "bsize" blocks */
  98         __u32                   bavail; /* No. of available "bsize" blocks */
  99 };
 100
 101 struct nfs_pathconf {
 102         struct nfs_fattr        *fattr; /* Post-op attributes */
 103         __u32                   max_link; /* max # of hard links */
 104         __u32                   max_namelen; /* max name length */
 105 };
 106
 107 struct nfs4_change_info {
 108         u32                     atomic;
 109         u64                     before;
 110         u64                     after;
 111 };
 112
 113 struct nfs_seqid;
 114 /*
 115  * Arguments to the open call.
 116  */
 117 struct nfs_openargs {
 118         const struct nfs_fh *   fh;
 119         struct nfs_seqid *      seqid;
 120         int                     open_flags;
 121         __u64                   clientid;
 122         __u64                   id;
 123         union {
 124                 struct iattr *  attrs;    /* UNCHECKED, GUARDED */
 125                 nfs4_verifier   verifier; /* EXCLUSIVE */
 126                 nfs4_stateid    delegation;             /* CLAIM_DELEGATE_CUR */
 127                 int             delegation_type;        /* CLAIM_PREVIOUS */
 128         } u;
 129         const struct qstr *     name;
 130         const struct nfs_server *server;         /* Needed for ID mapping */
 131         const u32 *             bitmask;
 132         __u32                   claim;
 133 };
 134
 135 struct nfs_openres {
 136         nfs4_stateid            stateid;
 137         struct nfs_fh           fh;
 138         struct nfs4_change_info cinfo;
 139         __u32                   rflags;
 140         struct nfs_fattr *      f_attr;
 141         struct nfs_fattr *      dir_attr;
 142         const struct nfs_server *server;
 143         int                     delegation_type;
 144         nfs4_stateid            delegation;
 145         __u32                   do_recall;
 146         __u64                   maxsize;
 147         __u32                   attrset[NFS4_BITMAP_SIZE];
 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         __u64                   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         __be32                  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         struct page **          pages;
 363         unsigned int            pathlen;
 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         __be32                  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         struct page **          pages;
 439         unsigned int            pathlen;
 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         __be32                  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         __be32 *                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 {
 538                         struct page **  pages;
 539                         unsigned int    len;
 540                 } symlink;   /* NF4LNK */
 541                 struct {
 542                         u32             specdata1;
 543                         u32             specdata2;
 544                 } device;    /* NF4BLK, NF4CHR */
 545         } u;
 546         const struct qstr *             name;
 547         const struct nfs_server *       server;
 548         const struct iattr *            attrs;
 549         const struct nfs_fh *           dir_fh;
 550         const u32 *                     bitmask;
 551 };
 552
 553 struct nfs4_create_res {
 554         const struct nfs_server *       server;
 555         struct nfs_fh *                 fh;
 556         struct nfs_fattr *              fattr;
 557         struct nfs4_change_info         dir_cinfo;
 558         struct nfs_fattr *              dir_fattr;
 559 };
 560
 561 struct nfs4_fsinfo_arg {
 562         const struct nfs_fh *           fh;
 563         const u32 *                     bitmask;
 564 };
 565
 566 struct nfs4_getattr_arg {
 567         const struct nfs_fh *           fh;
 568         const u32 *                     bitmask;
 569 };
 570
 571 struct nfs4_getattr_res {
 572         const struct nfs_server *       server;
 573         struct nfs_fattr *              fattr;
 574 };
 575
 576 struct nfs4_link_arg {
 577         const struct nfs_fh *           fh;
 578         const struct nfs_fh *           dir_fh;
 579         const struct qstr *             name;
 580         const u32 *                     bitmask;
 581 };
 582
 583 struct nfs4_link_res {
 584         const struct nfs_server *       server;
 585         struct nfs_fattr *              fattr;
 586         struct nfs4_change_info         cinfo;
 587         struct nfs_fattr *              dir_attr;
 588 };
 589
 590
 591 struct nfs4_lookup_arg {
 592         const struct nfs_fh *           dir_fh;
 593         const struct qstr *             name;
 594         const u32 *                     bitmask;
 595 };
 596
 597 struct nfs4_lookup_res {
 598         const struct nfs_server *       server;
 599         struct nfs_fattr *              fattr;
 600         struct nfs_fh *                 fh;
 601 };
 602
 603 struct nfs4_lookup_root_arg {
 604         const u32 *                     bitmask;
 605 };
 606
 607 struct nfs4_pathconf_arg {
 608         const struct nfs_fh *           fh;
 609         const u32 *                     bitmask;
 610 };
 611
 612 struct nfs4_readdir_arg {
 613         const struct nfs_fh *           fh;
 614         u64                             cookie;
 615         nfs4_verifier                   verifier;
 616         u32                             count;
 617         struct page **                  pages;  /* zero-copy data */
 618         unsigned int                    pgbase; /* zero-copy data */
 619         const u32 *                     bitmask;
 620 };
 621
 622 struct nfs4_readdir_res {
 623         nfs4_verifier                   verifier;
 624         unsigned int                    pgbase;
 625 };
 626
 627 struct nfs4_readlink {
 628         const struct nfs_fh *           fh;
 629         unsigned int                    pgbase;
 630         unsigned int                    pglen;   /* zero-copy data */
 631         struct page **                  pages;   /* zero-copy data */
 632 };
 633
 634 struct nfs4_remove_arg {
 635         const struct nfs_fh *           fh;
 636         const struct qstr *             name;
 637         const u32 *                     bitmask;
 638 };
 639
 640 struct nfs4_remove_res {
 641         const struct nfs_server *       server;
 642         struct nfs4_change_info         cinfo;
 643         struct nfs_fattr *              dir_attr;
 644 };
 645
 646 struct nfs4_rename_arg {
 647         const struct nfs_fh *           old_dir;
 648         const struct nfs_fh *           new_dir;
 649         const struct qstr *             old_name;
 650         const struct qstr *             new_name;
 651         const u32 *                     bitmask;
 652 };
 653
 654 struct nfs4_rename_res {
 655         const struct nfs_server *       server;
 656         struct nfs4_change_info         old_cinfo;
 657         struct nfs_fattr *              old_fattr;
 658         struct nfs4_change_info         new_cinfo;
 659         struct nfs_fattr *              new_fattr;
 660 };
 661
 662 struct nfs4_setclientid {
 663         const nfs4_verifier *           sc_verifier;      /* request */
 664         unsigned int                    sc_name_len;
 665         char                            sc_name[48];      /* request */
 666         u32                             sc_prog;          /* request */
 667         unsigned int                    sc_netid_len;
 668         char                            sc_netid[4];      /* request */
 669         unsigned int                    sc_uaddr_len;
 670         char                            sc_uaddr[24];     /* request */
 671         u32                             sc_cb_ident;      /* request */
 672 };
 673
 674 struct nfs4_statfs_arg {
 675         const struct nfs_fh *           fh;
 676         const u32 *                     bitmask;
 677 };
 678
 679 struct nfs4_server_caps_res {
 680         u32                             attr_bitmask[2];
 681         u32                             acl_bitmask;
 682         u32                             has_links;
 683         u32                             has_symlinks;
 684 };
 685
 686 struct nfs4_string {
 687         unsigned int len;
 688         char *data;
 689 };
 690
 691 #define NFS4_PATHNAME_MAXCOMPONENTS 512
 692 struct nfs4_pathname {
 693         unsigned int ncomponents;
 694         struct nfs4_string components[NFS4_PATHNAME_MAXCOMPONENTS];
 695 };
 696
 697 #define NFS4_FS_LOCATION_MAXSERVERS 10
 698 struct nfs4_fs_location {
 699         unsigned int nservers;
 700         struct nfs4_string servers[NFS4_FS_LOCATION_MAXSERVERS];
 701         struct nfs4_pathname rootpath;
 702 };
 703
 704 #define NFS4_FS_LOCATIONS_MAXENTRIES 10
 705 struct nfs4_fs_locations {
 706         struct nfs_fattr fattr;
 707         const struct nfs_server *server;
 708         struct nfs4_pathname fs_path;
 709         int nlocations;
 710         struct nfs4_fs_location locations[NFS4_FS_LOCATIONS_MAXENTRIES];
 711 };
 712
 713 struct nfs4_fs_locations_arg {
 714         const struct nfs_fh *dir_fh;
 715         const struct qstr *name;
 716         struct page *page;
 717         const u32 *bitmask;
 718 };
 719
 720 #endif /* CONFIG_NFS_V4 */
 721
 722 struct nfs_page;
 723
 724 #define NFS_PAGEVEC_SIZE        (8U)
 725
 726 struct nfs_read_data {
 727         int                     flags;
 728         struct rpc_task         task;
 729         struct inode            *inode;
 730         struct rpc_cred         *cred;
 731         struct nfs_fattr        fattr;  /* fattr storage */
 732         struct list_head        pages;  /* Coalesced read requests */
 733         struct nfs_page         *req;   /* multi ops per nfs_page */
 734         struct page             **pagevec;
 735         unsigned int            npages; /* Max length of pagevec */
 736         struct nfs_readargs args;
 737         struct nfs_readres  res;
 738 #ifdef CONFIG_NFS_V4
 739         unsigned long           timestamp;      /* For lease renewal */
 740 #endif
 741         struct page             *page_array[NFS_PAGEVEC_SIZE];
 742 };
 743
 744 struct nfs_write_data {
 745         int                     flags;
 746         struct rpc_task         task;
 747         struct inode            *inode;
 748         struct rpc_cred         *cred;
 749         struct nfs_fattr        fattr;
 750         struct nfs_writeverf    verf;
 751         struct list_head        pages;          /* Coalesced requests we wish to flush */
 752         struct nfs_page         *req;           /* multi ops per nfs_page */
 753         struct page             **pagevec;
 754         unsigned int            npages;         /* Max length of pagevec */
 755         struct nfs_writeargs    args;           /* argument struct */
 756         struct nfs_writeres     res;            /* result struct */
 757 #ifdef CONFIG_NFS_V4
 758         unsigned long           timestamp;      /* For lease renewal */
 759 #endif
 760         struct page             *page_array[NFS_PAGEVEC_SIZE];
 761 };
 762
 763 struct nfs_access_entry;
 764
 765 /*
 766  * RPC procedure vector for NFSv2/NFSv3 demuxing
 767  */
 768 struct nfs_rpc_ops {
 769         int     version;                /* Protocol version */
 770         struct dentry_operations *dentry_ops;
 771         const struct inode_operations *dir_inode_ops;
 772         const struct inode_operations *file_inode_ops;
 773
 774         int     (*getroot) (struct nfs_server *, struct nfs_fh *,
 775                             struct nfs_fsinfo *);
 776         int     (*lookupfh)(struct nfs_server *, struct nfs_fh *,
 777                             struct qstr *, struct nfs_fh *,
 778                             struct nfs_fattr *);
 779         int     (*getattr) (struct nfs_server *, struct nfs_fh *,
 780                             struct nfs_fattr *);
 781         int     (*setattr) (struct dentry *, struct nfs_fattr *,
 782                             struct iattr *);
 783         int     (*lookup)  (struct inode *, struct qstr *,
 784                             struct nfs_fh *, struct nfs_fattr *);
 785         int     (*access)  (struct inode *, struct nfs_access_entry *);
 786         int     (*readlink)(struct inode *, struct page *, unsigned int,
 787                             unsigned int);
 788         int     (*create)  (struct inode *, struct dentry *,
 789                             struct iattr *, int, struct nameidata *);
 790         int     (*remove)  (struct inode *, struct qstr *);
 791         int     (*unlink_setup)  (struct rpc_message *,
 792                             struct dentry *, struct qstr *);
 793         int     (*unlink_done) (struct dentry *, struct rpc_task *);
 794         int     (*rename)  (struct inode *, struct qstr *,
 795                             struct inode *, struct qstr *);
 796         int     (*link)    (struct inode *, struct inode *, struct qstr *);
 797         int     (*symlink) (struct inode *, struct dentry *, struct page *,
 798                             unsigned int, struct iattr *);
 799         int     (*mkdir)   (struct inode *, struct dentry *, struct iattr *);
 800         int     (*rmdir)   (struct inode *, struct qstr *);
 801         int     (*readdir) (struct dentry *, struct rpc_cred *,
 802                             u64, struct page *, unsigned int, int);
 803         int     (*mknod)   (struct inode *, struct dentry *, struct iattr *,
 804                             dev_t);
 805         int     (*statfs)  (struct nfs_server *, struct nfs_fh *,
 806                             struct nfs_fsstat *);
 807         int     (*fsinfo)  (struct nfs_server *, struct nfs_fh *,
 808                             struct nfs_fsinfo *);
 809         int     (*pathconf) (struct nfs_server *, struct nfs_fh *,
 810                              struct nfs_pathconf *);
 811         int     (*set_capabilities)(struct nfs_server *, struct nfs_fh *);
 812         __be32 *(*decode_dirent)(__be32 *, struct nfs_entry *, int plus);
 813         void    (*read_setup)   (struct nfs_read_data *);
 814         int     (*read_done)  (struct rpc_task *, struct nfs_read_data *);
 815         void    (*write_setup)  (struct nfs_write_data *, int how);
 816         int     (*write_done)  (struct rpc_task *, struct nfs_write_data *);
 817         void    (*commit_setup) (struct nfs_write_data *, int how);
 818         int     (*commit_done) (struct rpc_task *, struct nfs_write_data *);
 819         int     (*file_open)   (struct inode *, struct file *);
 820         int     (*file_release) (struct inode *, struct file *);
 821         int     (*lock)(struct file *, int, struct file_lock *);
 822         void    (*clear_acl_cache)(struct inode *);
 823 };
 824
 825 /*
 826  *      NFS_CALL(getattr, inode, (fattr));
 827  * into
 828  *      NFS_PROTO(inode)->getattr(fattr);
 829  */
 830 #define NFS_CALL(op, inode, args)       NFS_PROTO(inode)->op args
 831
 832 /*
 833  * Function vectors etc. for the NFS client
 834  */
 835 extern const struct nfs_rpc_ops nfs_v2_clientops;
 836 extern const struct nfs_rpc_ops nfs_v3_clientops;
 837 extern const struct nfs_rpc_ops nfs_v4_clientops;
 838 extern struct rpc_version       nfs_version2;
 839 extern struct rpc_version       nfs_version3;
 840 extern struct rpc_version       nfs_version4;
 841
 842 extern struct rpc_version       nfsacl_version3;
 843 extern struct rpc_program       nfsacl_program;
 844
 845 #endif