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
   6 struct nfs4_fsid {
   7         __u64 major;
   8         __u64 minor;
   9 };
  10
  11 struct nfs_fattr {
  12         unsigned short          valid;          /* which fields are valid */
  13         __u64                   pre_size;       /* pre_op_attr.size       */
  14         struct timespec         pre_mtime;      /* pre_op_attr.mtime      */
  15         struct timespec         pre_ctime;      /* pre_op_attr.ctime      */
  16         enum nfs_ftype          type;           /* always use NFSv2 types */
  17         __u32                   mode;
  18         __u32                   nlink;
  19         __u32                   uid;
  20         __u32                   gid;
  21         __u64                   size;
  22         union {
  23                 struct {
  24                         __u32   blocksize;
  25                         __u32   blocks;
  26                 } nfs2;
  27                 struct {
  28                         __u64   used;
  29                 } nfs3;
  30         } du;
  31         dev_t                   rdev;
  32         union {
  33                 __u64           nfs3;           /* also nfs2 */
  34                 struct nfs4_fsid nfs4;
  35         } fsid_u;
  36         __u64                   fileid;
  37         struct timespec         atime;
  38         struct timespec         mtime;
  39         struct timespec         ctime;
  40         __u32                   bitmap[2];      /* NFSv4 returned attribute bitmap */
  41         __u64                   change_attr;    /* NFSv4 change attribute */
  42         __u64                   pre_change_attr;/* pre-op NFSv4 change attribute */
  43         unsigned long           timestamp;
  44 };
  45
  46 #define NFS_ATTR_WCC            0x0001          /* pre-op WCC data    */
  47 #define NFS_ATTR_FATTR          0x0002          /* post-op attributes */
  48 #define NFS_ATTR_FATTR_V3       0x0004          /* NFSv3 attributes */
  49 #define NFS_ATTR_FATTR_V4       0x0008
  50 #define NFS_ATTR_PRE_CHANGE     0x0010
  51
  52 /*
  53  * Info on the file system
  54  */
  55 struct nfs_fsinfo {
  56         struct nfs_fattr        *fattr; /* Post-op attributes */
  57         __u32                   rtmax;  /* max.  read transfer size */
  58         __u32                   rtpref; /* pref. read transfer size */
  59         __u32                   rtmult; /* reads should be multiple of this */
  60         __u32                   wtmax;  /* max.  write transfer size */
  61         __u32                   wtpref; /* pref. write transfer size */
  62         __u32                   wtmult; /* writes should be multiple of this */
  63         __u32                   dtpref; /* pref. readdir transfer size */
  64         __u64                   maxfilesize;
  65         __u32                   lease_time; /* in seconds */
  66 };
  67
  68 struct nfs_fsstat {
  69         struct nfs_fattr        *fattr; /* Post-op attributes */
  70         __u64                   tbytes; /* total size in bytes */
  71         __u64                   fbytes; /* # of free bytes */
  72         __u64                   abytes; /* # of bytes available to user */
  73         __u64                   tfiles; /* # of files */
  74         __u64                   ffiles; /* # of free files */
  75         __u64                   afiles; /* # of files available to user */
  76 };
  77
  78 struct nfs2_fsstat {
  79         __u32                   tsize;  /* Server transfer size */
  80         __u32                   bsize;  /* Filesystem block size */
  81         __u32                   blocks; /* No. of "bsize" blocks on filesystem */
  82         __u32                   bfree;  /* No. of free "bsize" blocks */
  83         __u32                   bavail; /* No. of available "bsize" blocks */
  84 };
  85
  86 struct nfs_pathconf {
  87         struct nfs_fattr        *fattr; /* Post-op attributes */
  88         __u32                   max_link; /* max # of hard links */
  89         __u32                   max_namelen; /* max name length */
  90 };
  91
  92 struct nfs4_change_info {
  93         u32                     atomic;
  94         u64                     before;
  95         u64                     after;
  96 };
  97
  98 /*
  99  * Arguments to the open call.
 100  */
 101 struct nfs_openargs {
 102         const struct nfs_fh *   fh;
 103         __u32                   seqid;
 104         int                     open_flags;
 105         __u64                   clientid;
 106         __u32                   id;
 107         union {
 108                 struct iattr *  attrs;    /* UNCHECKED, GUARDED */
 109                 nfs4_verifier   verifier; /* EXCLUSIVE */
 110                 nfs4_stateid    delegation;             /* CLAIM_DELEGATE_CUR */
 111                 int             delegation_type;        /* CLAIM_PREVIOUS */
 112         } u;
 113         const struct qstr *     name;
 114         const struct nfs_server *server;         /* Needed for ID mapping */
 115         const u32 *             bitmask;
 116         __u32                   claim;
 117 };
 118
 119 struct nfs_openres {
 120         nfs4_stateid            stateid;
 121         struct nfs_fh           fh;
 122         struct nfs4_change_info cinfo;
 123         __u32                   rflags;
 124         struct nfs_fattr *      f_attr;
 125         const struct nfs_server *server;
 126         int                     delegation_type;
 127         nfs4_stateid            delegation;
 128         __u32                   do_recall;
 129         __u64                   maxsize;
 130 };
 131
 132 /*
 133  * Arguments to the open_confirm call.
 134  */
 135 struct nfs_open_confirmargs {
 136         const struct nfs_fh *   fh;
 137         nfs4_stateid            stateid;
 138         __u32                   seqid;
 139 };
 140
 141 struct nfs_open_confirmres {
 142         nfs4_stateid            stateid;
 143 };
 144
 145 /*
 146  * Arguments to the close call.
 147  */
 148 struct nfs_closeargs {
 149         struct nfs_fh *         fh;
 150         nfs4_stateid            stateid;
 151         __u32                   seqid;
 152         int                     open_flags;
 153 };
 154
 155 struct nfs_closeres {
 156         nfs4_stateid            stateid;
 157 };
 158 /*
 159  *  * Arguments to the lock,lockt, and locku call.
 160  *   */
 161 struct nfs_lowner {
 162         __u64           clientid;
 163         u32                     id;
 164 };
 165
 166 struct nfs_open_to_lock {
 167         __u32                   open_seqid;
 168         nfs4_stateid            open_stateid;
 169         __u32                   lock_seqid;
 170         struct nfs_lowner       lock_owner;
 171 };
 172
 173 struct nfs_exist_lock {
 174         nfs4_stateid            stateid;
 175         __u32                   seqid;
 176 };
 177
 178 struct nfs_lock_opargs {
 179         __u32                   reclaim;
 180         __u32                   new_lock_owner;
 181         union {
 182                 struct nfs_open_to_lock *open_lock;
 183                 struct nfs_exist_lock   *exist_lock;
 184         } u;
 185 };
 186
 187 struct nfs_locku_opargs {
 188         __u32                   seqid;
 189         nfs4_stateid            stateid;
 190 };
 191
 192 struct nfs_lockargs {
 193         struct nfs_fh *         fh;
 194         __u32                   type;
 195         __u64                   offset;
 196         __u64                   length;
 197         union {
 198                 struct nfs_lock_opargs  *lock;    /* LOCK  */
 199                 struct nfs_lowner       *lockt;  /* LOCKT */
 200                 struct nfs_locku_opargs *locku;  /* LOCKU */
 201         } u;
 202 };
 203
 204 struct nfs_lock_denied {
 205         __u64                   offset;
 206         __u64                   length;
 207         __u32                   type;
 208         struct nfs_lowner       owner;
 209 };
 210
 211 struct nfs_lockres {
 212         union {
 213                 nfs4_stateid            stateid;/* LOCK success, LOCKU */
 214                 struct nfs_lock_denied  denied; /* LOCK failed, LOCKT success */
 215         } u;
 216         const struct nfs_server *       server;
 217 };
 218
 219 struct nfs4_delegreturnargs {
 220         const struct nfs_fh *fhandle;
 221         const nfs4_stateid *stateid;
 222 };
 223
 224 /*
 225  * Arguments to the read call.
 226  */
 227
 228 #define NFS_READ_MAXIOV         (9U)
 229 #if (NFS_READ_MAXIOV > (MAX_IOVEC -2))
 230 #error "NFS_READ_MAXIOV is too large"
 231 #endif
 232
 233 struct nfs_readargs {
 234         struct nfs_fh *         fh;
 235         struct nfs_open_context *context;
 236         __u64                   offset;
 237         __u32                   count;
 238         unsigned int            pgbase;
 239         struct page **          pages;
 240 };
 241
 242 struct nfs_readres {
 243         struct nfs_fattr *      fattr;
 244         __u32                   count;
 245         int                     eof;
 246 };
 247
 248 /*
 249  * Arguments to the write call.
 250  */
 251 #define NFS_WRITE_MAXIOV        (9U)
 252 #if (NFS_WRITE_MAXIOV > (MAX_IOVEC -2))
 253 #error "NFS_WRITE_MAXIOV is too large"
 254 #endif
 255
 256 struct nfs_writeargs {
 257         struct nfs_fh *         fh;
 258         struct nfs_open_context *context;
 259         __u64                   offset;
 260         __u32                   count;
 261         enum nfs3_stable_how    stable;
 262         unsigned int            pgbase;
 263         struct page **          pages;
 264 };
 265
 266 struct nfs_writeverf {
 267         enum nfs3_stable_how    committed;
 268         __u32                   verifier[2];
 269 };
 270
 271 struct nfs_writeres {
 272         struct nfs_fattr *      fattr;
 273         struct nfs_writeverf *  verf;
 274         __u32                   count;
 275 };
 276
 277 /*
 278  * Argument struct for decode_entry function
 279  */
 280 struct nfs_entry {
 281         __u64                   ino;
 282         __u64                   cookie,
 283                                 prev_cookie;
 284         const char *            name;
 285         unsigned int            len;
 286         int                     eof;
 287         struct nfs_fh *         fh;
 288         struct nfs_fattr *      fattr;
 289 };
 290
 291 /*
 292  * The following types are for NFSv2 only.
 293  */
 294 struct nfs_sattrargs {
 295         struct nfs_fh *         fh;
 296         struct iattr *          sattr;
 297 };
 298
 299 struct nfs_diropargs {
 300         struct nfs_fh *         fh;
 301         const char *            name;
 302         unsigned int            len;
 303 };
 304
 305 struct nfs_createargs {
 306         struct nfs_fh *         fh;
 307         const char *            name;
 308         unsigned int            len;
 309         struct iattr *          sattr;
 310 };
 311
 312 struct nfs_renameargs {
 313         struct nfs_fh *         fromfh;
 314         const char *            fromname;
 315         unsigned int            fromlen;
 316         struct nfs_fh *         tofh;
 317         const char *            toname;
 318         unsigned int            tolen;
 319 };
 320
 321 struct nfs_setattrargs {
 322         struct nfs_fh *                 fh;
 323         nfs4_stateid                    stateid;
 324         struct iattr *                  iap;
 325         const struct nfs_server *       server; /* Needed for name mapping */
 326         const u32 *                     bitmask;
 327 };
 328
 329 struct nfs_setaclargs {
 330         struct nfs_fh *                 fh;
 331         size_t                          acl_len;
 332         unsigned int                    acl_pgbase;
 333         struct page **                  acl_pages;
 334 };
 335
 336 struct nfs_getaclargs {
 337         struct nfs_fh *                 fh;
 338         size_t                          acl_len;
 339         unsigned int                    acl_pgbase;
 340         struct page **                  acl_pages;
 341 };
 342
 343 struct nfs_setattrres {
 344         struct nfs_fattr *              fattr;
 345         const struct nfs_server *       server;
 346 };
 347
 348 struct nfs_linkargs {
 349         struct nfs_fh *         fromfh;
 350         struct nfs_fh *         tofh;
 351         const char *            toname;
 352         unsigned int            tolen;
 353 };
 354
 355 struct nfs_symlinkargs {
 356         struct nfs_fh *         fromfh;
 357         const char *            fromname;
 358         unsigned int            fromlen;
 359         const char *            topath;
 360         unsigned int            tolen;
 361         struct iattr *          sattr;
 362 };
 363
 364 struct nfs_readdirargs {
 365         struct nfs_fh *         fh;
 366         __u32                   cookie;
 367         unsigned int            count;
 368         struct page **          pages;
 369 };
 370
 371 struct nfs_diropok {
 372         struct nfs_fh *         fh;
 373         struct nfs_fattr *      fattr;
 374 };
 375
 376 struct nfs_readlinkargs {
 377         struct nfs_fh *         fh;
 378         unsigned int            pgbase;
 379         unsigned int            pglen;
 380         struct page **          pages;
 381 };
 382
 383 struct nfs3_sattrargs {
 384         struct nfs_fh *         fh;
 385         struct iattr *          sattr;
 386         unsigned int            guard;
 387         struct timespec         guardtime;
 388 };
 389
 390 struct nfs3_diropargs {
 391         struct nfs_fh *         fh;
 392         const char *            name;
 393         unsigned int            len;
 394 };
 395
 396 struct nfs3_accessargs {
 397         struct nfs_fh *         fh;
 398         __u32                   access;
 399 };
 400
 401 struct nfs3_createargs {
 402         struct nfs_fh *         fh;
 403         const char *            name;
 404         unsigned int            len;
 405         struct iattr *          sattr;
 406         enum nfs3_createmode    createmode;
 407         __u32                   verifier[2];
 408 };
 409
 410 struct nfs3_mkdirargs {
 411         struct nfs_fh *         fh;
 412         const char *            name;
 413         unsigned int            len;
 414         struct iattr *          sattr;
 415 };
 416
 417 struct nfs3_symlinkargs {
 418         struct nfs_fh *         fromfh;
 419         const char *            fromname;
 420         unsigned int            fromlen;
 421         const char *            topath;
 422         unsigned int            tolen;
 423         struct iattr *          sattr;
 424 };
 425
 426 struct nfs3_mknodargs {
 427         struct nfs_fh *         fh;
 428         const char *            name;
 429         unsigned int            len;
 430         enum nfs3_ftype         type;
 431         struct iattr *          sattr;
 432         dev_t                   rdev;
 433 };
 434
 435 struct nfs3_renameargs {
 436         struct nfs_fh *         fromfh;
 437         const char *            fromname;
 438         unsigned int            fromlen;
 439         struct nfs_fh *         tofh;
 440         const char *            toname;
 441         unsigned int            tolen;
 442 };
 443
 444 struct nfs3_linkargs {
 445         struct nfs_fh *         fromfh;
 446         struct nfs_fh *         tofh;
 447         const char *            toname;
 448         unsigned int            tolen;
 449 };
 450
 451 struct nfs3_readdirargs {
 452         struct nfs_fh *         fh;
 453         __u64                   cookie;
 454         __u32                   verf[2];
 455         int                     plus;
 456         unsigned int            count;
 457         struct page **          pages;
 458 };
 459
 460 struct nfs3_diropres {
 461         struct nfs_fattr *      dir_attr;
 462         struct nfs_fh *         fh;
 463         struct nfs_fattr *      fattr;
 464 };
 465
 466 struct nfs3_accessres {
 467         struct nfs_fattr *      fattr;
 468         __u32                   access;
 469 };
 470
 471 struct nfs3_readlinkargs {
 472         struct nfs_fh *         fh;
 473         unsigned int            pgbase;
 474         unsigned int            pglen;
 475         struct page **          pages;
 476 };
 477
 478 struct nfs3_renameres {
 479         struct nfs_fattr *      fromattr;
 480         struct nfs_fattr *      toattr;
 481 };
 482
 483 struct nfs3_linkres {
 484         struct nfs_fattr *      dir_attr;
 485         struct nfs_fattr *      fattr;
 486 };
 487
 488 struct nfs3_readdirres {
 489         struct nfs_fattr *      dir_attr;
 490         __u32 *                 verf;
 491         int                     plus;
 492 };
 493
 494 #ifdef CONFIG_NFS_V4
 495
 496 typedef u64 clientid4;
 497
 498 struct nfs4_accessargs {
 499         const struct nfs_fh *           fh;
 500         u32                             access;
 501 };
 502
 503 struct nfs4_accessres {
 504         u32                             supported;
 505         u32                             access;
 506 };
 507
 508 struct nfs4_create_arg {
 509         u32                             ftype;
 510         union {
 511                 struct qstr *           symlink;    /* NF4LNK */
 512                 struct {
 513                         u32             specdata1;
 514                         u32             specdata2;
 515                 } device;    /* NF4BLK, NF4CHR */
 516         } u;
 517         const struct qstr *             name;
 518         const struct nfs_server *       server;
 519         const struct iattr *            attrs;
 520         const struct nfs_fh *           dir_fh;
 521         const u32 *                     bitmask;
 522 };
 523
 524 struct nfs4_create_res {
 525         const struct nfs_server *       server;
 526         struct nfs_fh *                 fh;
 527         struct nfs_fattr *              fattr;
 528         struct nfs4_change_info         dir_cinfo;
 529 };
 530
 531 struct nfs4_fsinfo_arg {
 532         const struct nfs_fh *           fh;
 533         const u32 *                     bitmask;
 534 };
 535
 536 struct nfs4_getattr_arg {
 537         const struct nfs_fh *           fh;
 538         const u32 *                     bitmask;
 539 };
 540
 541 struct nfs4_getattr_res {
 542         const struct nfs_server *       server;
 543         struct nfs_fattr *              fattr;
 544 };
 545
 546 struct nfs4_link_arg {
 547         const struct nfs_fh *           fh;
 548         const struct nfs_fh *           dir_fh;
 549         const struct qstr *             name;
 550 };
 551
 552 struct nfs4_lookup_arg {
 553         const struct nfs_fh *           dir_fh;
 554         const struct qstr *             name;
 555         const u32 *                     bitmask;
 556 };
 557
 558 struct nfs4_lookup_res {
 559         const struct nfs_server *       server;
 560         struct nfs_fattr *              fattr;
 561         struct nfs_fh *                 fh;
 562 };
 563
 564 struct nfs4_lookup_root_arg {
 565         const u32 *                     bitmask;
 566 };
 567
 568 struct nfs4_pathconf_arg {
 569         const struct nfs_fh *           fh;
 570         const u32 *                     bitmask;
 571 };
 572
 573 struct nfs4_readdir_arg {
 574         const struct nfs_fh *           fh;
 575         u64                             cookie;
 576         nfs4_verifier                   verifier;
 577         u32                             count;
 578         struct page **                  pages;  /* zero-copy data */
 579         unsigned int                    pgbase; /* zero-copy data */
 580         const u32 *                     bitmask;
 581 };
 582
 583 struct nfs4_readdir_res {
 584         nfs4_verifier                   verifier;
 585         unsigned int                    pgbase;
 586 };
 587
 588 struct nfs4_readlink {
 589         const struct nfs_fh *           fh;
 590         unsigned int                    pgbase;
 591         unsigned int                    pglen;   /* zero-copy data */
 592         struct page **                  pages;   /* zero-copy data */
 593 };
 594
 595 struct nfs4_remove_arg {
 596         const struct nfs_fh *           fh;
 597         const struct qstr *             name;
 598 };
 599
 600 struct nfs4_rename_arg {
 601         const struct nfs_fh *           old_dir;
 602         const struct nfs_fh *           new_dir;
 603         const struct qstr *             old_name;
 604         const struct qstr *             new_name;
 605 };
 606
 607 struct nfs4_rename_res {
 608         struct nfs4_change_info         old_cinfo;
 609         struct nfs4_change_info         new_cinfo;
 610 };
 611
 612 struct nfs4_setclientid {
 613         const nfs4_verifier *           sc_verifier;      /* request */
 614         unsigned int                    sc_name_len;
 615         char                            sc_name[32];      /* request */
 616         u32                             sc_prog;          /* request */
 617         unsigned int                    sc_netid_len;
 618         char                            sc_netid[4];      /* request */
 619         unsigned int                    sc_uaddr_len;
 620         char                            sc_uaddr[24];     /* request */
 621         u32                             sc_cb_ident;      /* request */
 622 };
 623
 624 struct nfs4_statfs_arg {
 625         const struct nfs_fh *           fh;
 626         const u32 *                     bitmask;
 627 };
 628
 629 struct nfs4_server_caps_res {
 630         u32                             attr_bitmask[2];
 631         u32                             acl_bitmask;
 632         u32                             has_links;
 633         u32                             has_symlinks;
 634 };
 635
 636 #endif /* CONFIG_NFS_V4 */
 637
 638 struct nfs_page;
 639
 640 struct nfs_read_data {
 641         int                     flags;
 642         struct rpc_task         task;
 643         struct inode            *inode;
 644         struct rpc_cred         *cred;
 645         struct nfs_fattr        fattr;  /* fattr storage */
 646         struct list_head        pages;  /* Coalesced read requests */
 647         struct nfs_page         *req;   /* multi ops per nfs_page */
 648         struct page             *pagevec[NFS_READ_MAXIOV];
 649         struct nfs_readargs args;
 650         struct nfs_readres  res;
 651 #ifdef CONFIG_NFS_V4
 652         unsigned long           timestamp;      /* For lease renewal */
 653 #endif
 654         void (*complete) (struct nfs_read_data *, int);
 655 };
 656
 657 struct nfs_write_data {
 658         int                     flags;
 659         struct rpc_task         task;
 660         struct inode            *inode;
 661         struct rpc_cred         *cred;
 662         struct nfs_fattr        fattr;
 663         struct nfs_writeverf    verf;
 664         struct list_head        pages;          /* Coalesced requests we wish to flush */
 665         struct nfs_page         *req;           /* multi ops per nfs_page */
 666         struct page             *pagevec[NFS_WRITE_MAXIOV];
 667         struct nfs_writeargs    args;           /* argument struct */
 668         struct nfs_writeres     res;            /* result struct */
 669 #ifdef CONFIG_NFS_V4
 670         unsigned long           timestamp;      /* For lease renewal */
 671 #endif
 672         void (*complete) (struct nfs_write_data *, int);
 673 };
 674
 675 struct nfs_access_entry;
 676
 677 /*
 678  * RPC procedure vector for NFSv2/NFSv3 demuxing
 679  */
 680 struct nfs_rpc_ops {
 681         int     version;                /* Protocol version */
 682         struct dentry_operations *dentry_ops;
 683         struct inode_operations *dir_inode_ops;
 684         struct inode_operations *file_inode_ops;
 685
 686         int     (*getroot) (struct nfs_server *, struct nfs_fh *,
 687                             struct nfs_fsinfo *);
 688         int     (*getattr) (struct nfs_server *, struct nfs_fh *,
 689                             struct nfs_fattr *);
 690         int     (*setattr) (struct dentry *, struct nfs_fattr *,
 691                             struct iattr *);
 692         int     (*lookup)  (struct inode *, struct qstr *,
 693                             struct nfs_fh *, struct nfs_fattr *);
 694         int     (*access)  (struct inode *, struct nfs_access_entry *);
 695         int     (*readlink)(struct inode *, struct page *, unsigned int,
 696                             unsigned int);
 697         int     (*read)    (struct nfs_read_data *);
 698         int     (*write)   (struct nfs_write_data *);
 699         int     (*commit)  (struct nfs_write_data *);
 700         int     (*create)  (struct inode *, struct dentry *,
 701                             struct iattr *, int);
 702         int     (*remove)  (struct inode *, struct qstr *);
 703         int     (*unlink_setup)  (struct rpc_message *,
 704                             struct dentry *, struct qstr *);
 705         int     (*unlink_done) (struct dentry *, struct rpc_task *);
 706         int     (*rename)  (struct inode *, struct qstr *,
 707                             struct inode *, struct qstr *);
 708         int     (*link)    (struct inode *, struct inode *, struct qstr *);
 709         int     (*symlink) (struct inode *, struct qstr *, struct qstr *,
 710                             struct iattr *, struct nfs_fh *,
 711                             struct nfs_fattr *);
 712         int     (*mkdir)   (struct inode *, struct dentry *, struct iattr *);
 713         int     (*rmdir)   (struct inode *, struct qstr *);
 714         int     (*readdir) (struct dentry *, struct rpc_cred *,
 715                             u64, struct page *, unsigned int, int);
 716         int     (*mknod)   (struct inode *, struct dentry *, struct iattr *,
 717                             dev_t);
 718         int     (*statfs)  (struct nfs_server *, struct nfs_fh *,
 719                             struct nfs_fsstat *);
 720         int     (*fsinfo)  (struct nfs_server *, struct nfs_fh *,
 721                             struct nfs_fsinfo *);
 722         int     (*pathconf) (struct nfs_server *, struct nfs_fh *,
 723                              struct nfs_pathconf *);
 724         u32 *   (*decode_dirent)(u32 *, struct nfs_entry *, int plus);
 725         void    (*read_setup)   (struct nfs_read_data *);
 726         void    (*write_setup)  (struct nfs_write_data *, int how);
 727         void    (*commit_setup) (struct nfs_write_data *, int how);
 728         int     (*file_open)   (struct inode *, struct file *);
 729         int     (*file_release) (struct inode *, struct file *);
 730         int     (*lock)(struct file *, int, struct file_lock *);
 731         void    (*clear_acl_cache)(struct inode *);
 732 };
 733
 734 /*
 735  *      NFS_CALL(getattr, inode, (fattr));
 736  * into
 737  *      NFS_PROTO(inode)->getattr(fattr);
 738  */
 739 #define NFS_CALL(op, inode, args)       NFS_PROTO(inode)->op args
 740
 741 /*
 742  * Function vectors etc. for the NFS client
 743  */
 744 extern struct nfs_rpc_ops       nfs_v2_clientops;
 745 extern struct nfs_rpc_ops       nfs_v3_clientops;
 746 extern struct nfs_rpc_ops       nfs_v4_clientops;
 747 extern struct rpc_version       nfs_version2;
 748 extern struct rpc_version       nfs_version3;
 749 extern struct rpc_version       nfs_version4;
 750
 751 #endif