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         __u32                   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 };
 148
 149 /*
 150  * Arguments to the open_confirm call.
 151  */
 152 struct nfs_open_confirmargs {
 153         const struct nfs_fh *   fh;
 154         nfs4_stateid *          stateid;
 155         struct nfs_seqid *      seqid;
 156 };
 157
 158 struct nfs_open_confirmres {
 159         nfs4_stateid            stateid;
 160 };
 161
 162 /*
 163  * Arguments to the close call.
 164  */
 165 struct nfs_closeargs {
 166         struct nfs_fh *         fh;
 167         nfs4_stateid *          stateid;
 168         struct nfs_seqid *      seqid;
 169         int                     open_flags;
 170         const u32 *             bitmask;
 171 };
 172
 173 struct nfs_closeres {
 174         nfs4_stateid            stateid;
 175         struct nfs_fattr *      fattr;
 176         const struct nfs_server *server;
 177 };
 178 /*
 179  *  * Arguments to the lock,lockt, and locku call.
 180  *   */
 181 struct nfs_lowner {
 182         __u64                   clientid;
 183         u32                     id;
 184 };
 185
 186 struct nfs_lock_args {
 187         struct nfs_fh *         fh;
 188         struct file_lock *      fl;
 189         struct nfs_seqid *      lock_seqid;
 190         nfs4_stateid *          lock_stateid;
 191         struct nfs_seqid *      open_seqid;
 192         nfs4_stateid *          open_stateid;
 193         struct nfs_lowner       lock_owner;
 194         unsigned char           block : 1;
 195         unsigned char           reclaim : 1;
 196         unsigned char           new_lock_owner : 1;
 197 };
 198
 199 struct nfs_lock_res {
 200         nfs4_stateid                    stateid;
 201 };
 202
 203 struct nfs_locku_args {
 204         struct nfs_fh *         fh;
 205         struct file_lock *      fl;
 206         struct nfs_seqid *      seqid;
 207         nfs4_stateid *          stateid;
 208 };
 209
 210 struct nfs_locku_res {
 211         nfs4_stateid                    stateid;
 212 };
 213
 214 struct nfs_lockt_args {
 215         struct nfs_fh *         fh;
 216         struct file_lock *      fl;
 217         struct nfs_lowner       lock_owner;
 218 };
 219
 220 struct nfs_lockt_res {
 221         struct file_lock *      denied; /* LOCK, LOCKT failed */
 222 };
 223
 224 struct nfs4_delegreturnargs {
 225         const struct nfs_fh *fhandle;
 226         const nfs4_stateid *stateid;
 227         const u32 * bitmask;
 228 };
 229
 230 struct nfs4_delegreturnres {
 231         struct nfs_fattr * fattr;
 232         const struct nfs_server *server;
 233 };
 234
 235 /*
 236  * Arguments to the read call.
 237  */
 238 struct nfs_readargs {
 239         struct nfs_fh *         fh;
 240         struct nfs_open_context *context;
 241         __u64                   offset;
 242         __u32                   count;
 243         unsigned int            pgbase;
 244         struct page **          pages;
 245 };
 246
 247 struct nfs_readres {
 248         struct nfs_fattr *      fattr;
 249         __u32                   count;
 250         int                     eof;
 251 };
 252
 253 /*
 254  * Arguments to the write call.
 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         const u32 *             bitmask;
 265 };
 266
 267 struct nfs_writeverf {
 268         enum nfs3_stable_how    committed;
 269         __be32                  verifier[2];
 270 };
 271
 272 struct nfs_writeres {
 273         struct nfs_fattr *      fattr;
 274         struct nfs_writeverf *  verf;
 275         __u32                   count;
 276         const struct nfs_server *server;
 277 };
 278
 279 /*
 280  * Argument struct for decode_entry function
 281  */
 282 struct nfs_entry {
 283         __u64                   ino;
 284         __u64                   cookie,
 285                                 prev_cookie;
 286         const char *            name;
 287         unsigned int            len;
 288         int                     eof;
 289         struct nfs_fh *         fh;
 290         struct nfs_fattr *      fattr;
 291 };
 292
 293 /*
 294  * The following types are for NFSv2 only.
 295  */
 296 struct nfs_sattrargs {
 297         struct nfs_fh *         fh;
 298         struct iattr *          sattr;
 299 };
 300
 301 struct nfs_diropargs {
 302         struct nfs_fh *         fh;
 303         const char *            name;
 304         unsigned int            len;
 305 };
 306
 307 struct nfs_createargs {
 308         struct nfs_fh *         fh;
 309         const char *            name;
 310         unsigned int            len;
 311         struct iattr *          sattr;
 312 };
 313
 314 struct nfs_renameargs {
 315         struct nfs_fh *         fromfh;
 316         const char *            fromname;
 317         unsigned int            fromlen;
 318         struct nfs_fh *         tofh;
 319         const char *            toname;
 320         unsigned int            tolen;
 321 };
 322
 323 struct nfs_setattrargs {
 324         struct nfs_fh *                 fh;
 325         nfs4_stateid                    stateid;
 326         struct iattr *                  iap;
 327         const struct nfs_server *       server; /* Needed for name mapping */
 328         const u32 *                     bitmask;
 329 };
 330
 331 struct nfs_setaclargs {
 332         struct nfs_fh *                 fh;
 333         size_t                          acl_len;
 334         unsigned int                    acl_pgbase;
 335         struct page **                  acl_pages;
 336 };
 337
 338 struct nfs_getaclargs {
 339         struct nfs_fh *                 fh;
 340         size_t                          acl_len;
 341         unsigned int                    acl_pgbase;
 342         struct page **                  acl_pages;
 343 };
 344
 345 struct nfs_setattrres {
 346         struct nfs_fattr *              fattr;
 347         const struct nfs_server *       server;
 348 };
 349
 350 struct nfs_linkargs {
 351         struct nfs_fh *         fromfh;
 352         struct nfs_fh *         tofh;
 353         const char *            toname;
 354         unsigned int            tolen;
 355 };
 356
 357 struct nfs_symlinkargs {
 358         struct nfs_fh *         fromfh;
 359         const char *            fromname;
 360         unsigned int            fromlen;
 361         struct page **          pages;
 362         unsigned int            pathlen;
 363         struct iattr *          sattr;
 364 };
 365
 366 struct nfs_readdirargs {
 367         struct nfs_fh *         fh;
 368         __u32                   cookie;
 369         unsigned int            count;
 370         struct page **          pages;
 371 };
 372
 373 struct nfs3_getaclargs {
 374         struct nfs_fh *         fh;
 375         int                     mask;
 376         struct page **          pages;
 377 };
 378
 379 struct nfs3_setaclargs {
 380         struct inode *          inode;
 381         int                     mask;
 382         struct posix_acl *      acl_access;
 383         struct posix_acl *      acl_default;
 384         struct page **          pages;
 385 };
 386
 387 struct nfs_diropok {
 388         struct nfs_fh *         fh;
 389         struct nfs_fattr *      fattr;
 390 };
 391
 392 struct nfs_readlinkargs {
 393         struct nfs_fh *         fh;
 394         unsigned int            pgbase;
 395         unsigned int            pglen;
 396         struct page **          pages;
 397 };
 398
 399 struct nfs3_sattrargs {
 400         struct nfs_fh *         fh;
 401         struct iattr *          sattr;
 402         unsigned int            guard;
 403         struct timespec         guardtime;
 404 };
 405
 406 struct nfs3_diropargs {
 407         struct nfs_fh *         fh;
 408         const char *            name;
 409         unsigned int            len;
 410 };
 411
 412 struct nfs3_accessargs {
 413         struct nfs_fh *         fh;
 414         __u32                   access;
 415 };
 416
 417 struct nfs3_createargs {
 418         struct nfs_fh *         fh;
 419         const char *            name;
 420         unsigned int            len;
 421         struct iattr *          sattr;
 422         enum nfs3_createmode    createmode;
 423         __be32                  verifier[2];
 424 };
 425
 426 struct nfs3_mkdirargs {
 427         struct nfs_fh *         fh;
 428         const char *            name;
 429         unsigned int            len;
 430         struct iattr *          sattr;
 431 };
 432
 433 struct nfs3_symlinkargs {
 434         struct nfs_fh *         fromfh;
 435         const char *            fromname;
 436         unsigned int            fromlen;
 437         struct page **          pages;
 438         unsigned int            pathlen;
 439         struct iattr *          sattr;
 440 };
 441
 442 struct nfs3_mknodargs {
 443         struct nfs_fh *         fh;
 444         const char *            name;
 445         unsigned int            len;
 446         enum nfs3_ftype         type;
 447         struct iattr *          sattr;
 448         dev_t                   rdev;
 449 };
 450
 451 struct nfs3_renameargs {
 452         struct nfs_fh *         fromfh;
 453         const char *            fromname;
 454         unsigned int            fromlen;
 455         struct nfs_fh *         tofh;
 456         const char *            toname;
 457         unsigned int            tolen;
 458 };
 459
 460 struct nfs3_linkargs {
 461         struct nfs_fh *         fromfh;
 462         struct nfs_fh *         tofh;
 463         const char *            toname;
 464         unsigned int            tolen;
 465 };
 466
 467 struct nfs3_readdirargs {
 468         struct nfs_fh *         fh;
 469         __u64                   cookie;
 470         __be32                  verf[2];
 471         int                     plus;
 472         unsigned int            count;
 473         struct page **          pages;
 474 };
 475
 476 struct nfs3_diropres {
 477         struct nfs_fattr *      dir_attr;
 478         struct nfs_fh *         fh;
 479         struct nfs_fattr *      fattr;
 480 };
 481
 482 struct nfs3_accessres {
 483         struct nfs_fattr *      fattr;
 484         __u32                   access;
 485 };
 486
 487 struct nfs3_readlinkargs {
 488         struct nfs_fh *         fh;
 489         unsigned int            pgbase;
 490         unsigned int            pglen;
 491         struct page **          pages;
 492 };
 493
 494 struct nfs3_renameres {
 495         struct nfs_fattr *      fromattr;
 496         struct nfs_fattr *      toattr;
 497 };
 498
 499 struct nfs3_linkres {
 500         struct nfs_fattr *      dir_attr;
 501         struct nfs_fattr *      fattr;
 502 };
 503
 504 struct nfs3_readdirres {
 505         struct nfs_fattr *      dir_attr;
 506         __be32 *                verf;
 507         int                     plus;
 508 };
 509
 510 struct nfs3_getaclres {
 511         struct nfs_fattr *      fattr;
 512         int                     mask;
 513         unsigned int            acl_access_count;
 514         unsigned int            acl_default_count;
 515         struct posix_acl *      acl_access;
 516         struct posix_acl *      acl_default;
 517 };
 518
 519 #ifdef CONFIG_NFS_V4
 520
 521 typedef u64 clientid4;
 522
 523 struct nfs4_accessargs {
 524         const struct nfs_fh *           fh;
 525         u32                             access;
 526 };
 527
 528 struct nfs4_accessres {
 529         u32                             supported;
 530         u32                             access;
 531 };
 532
 533 struct nfs4_create_arg {
 534         u32                             ftype;
 535         union {
 536                 struct {
 537                         struct page **  pages;
 538                         unsigned int    len;
 539                 } symlink;   /* NF4LNK */
 540                 struct {
 541                         u32             specdata1;
 542                         u32             specdata2;
 543                 } device;    /* NF4BLK, NF4CHR */
 544         } u;
 545         const struct qstr *             name;
 546         const struct nfs_server *       server;
 547         const struct iattr *            attrs;
 548         const struct nfs_fh *           dir_fh;
 549         const u32 *                     bitmask;
 550 };
 551
 552 struct nfs4_create_res {
 553         const struct nfs_server *       server;
 554         struct nfs_fh *                 fh;
 555         struct nfs_fattr *              fattr;
 556         struct nfs4_change_info         dir_cinfo;
 557         struct nfs_fattr *              dir_fattr;
 558 };
 559
 560 struct nfs4_fsinfo_arg {
 561         const struct nfs_fh *           fh;
 562         const u32 *                     bitmask;
 563 };
 564
 565 struct nfs4_getattr_arg {
 566         const struct nfs_fh *           fh;
 567         const u32 *                     bitmask;
 568 };
 569
 570 struct nfs4_getattr_res {
 571         const struct nfs_server *       server;
 572         struct nfs_fattr *              fattr;
 573 };
 574
 575 struct nfs4_link_arg {
 576         const struct nfs_fh *           fh;
 577         const struct nfs_fh *           dir_fh;
 578         const struct qstr *             name;
 579         const u32 *                     bitmask;
 580 };
 581
 582 struct nfs4_link_res {
 583         const struct nfs_server *       server;
 584         struct nfs_fattr *              fattr;
 585         struct nfs4_change_info         cinfo;
 586         struct nfs_fattr *              dir_attr;
 587 };
 588
 589
 590 struct nfs4_lookup_arg {
 591         const struct nfs_fh *           dir_fh;
 592         const struct qstr *             name;
 593         const u32 *                     bitmask;
 594 };
 595
 596 struct nfs4_lookup_res {
 597         const struct nfs_server *       server;
 598         struct nfs_fattr *              fattr;
 599         struct nfs_fh *                 fh;
 600 };
 601
 602 struct nfs4_lookup_root_arg {
 603         const u32 *                     bitmask;
 604 };
 605
 606 struct nfs4_pathconf_arg {
 607         const struct nfs_fh *           fh;
 608         const u32 *                     bitmask;
 609 };
 610
 611 struct nfs4_readdir_arg {
 612         const struct nfs_fh *           fh;
 613         u64                             cookie;
 614         nfs4_verifier                   verifier;
 615         u32                             count;
 616         struct page **                  pages;  /* zero-copy data */
 617         unsigned int                    pgbase; /* zero-copy data */
 618         const u32 *                     bitmask;
 619 };
 620
 621 struct nfs4_readdir_res {
 622         nfs4_verifier                   verifier;
 623         unsigned int                    pgbase;
 624 };
 625
 626 struct nfs4_readlink {
 627         const struct nfs_fh *           fh;
 628         unsigned int                    pgbase;
 629         unsigned int                    pglen;   /* zero-copy data */
 630         struct page **                  pages;   /* zero-copy data */
 631 };
 632
 633 struct nfs4_remove_arg {
 634         const struct nfs_fh *           fh;
 635         const struct qstr *             name;
 636         const u32 *                     bitmask;
 637 };
 638
 639 struct nfs4_remove_res {
 640         const struct nfs_server *       server;
 641         struct nfs4_change_info         cinfo;
 642         struct nfs_fattr *              dir_attr;
 643 };
 644
 645 struct nfs4_rename_arg {
 646         const struct nfs_fh *           old_dir;
 647         const struct nfs_fh *           new_dir;
 648         const struct qstr *             old_name;
 649         const struct qstr *             new_name;
 650         const u32 *                     bitmask;
 651 };
 652
 653 struct nfs4_rename_res {
 654         const struct nfs_server *       server;
 655         struct nfs4_change_info         old_cinfo;
 656         struct nfs_fattr *              old_fattr;
 657         struct nfs4_change_info         new_cinfo;
 658         struct nfs_fattr *              new_fattr;
 659 };
 660
 661 struct nfs4_setclientid {
 662         const nfs4_verifier *           sc_verifier;      /* request */
 663         unsigned int                    sc_name_len;
 664         char                            sc_name[48];      /* request */
 665         u32                             sc_prog;          /* request */
 666         unsigned int                    sc_netid_len;
 667         char                            sc_netid[4];      /* request */
 668         unsigned int                    sc_uaddr_len;
 669         char                            sc_uaddr[24];     /* request */
 670         u32                             sc_cb_ident;      /* request */
 671 };
 672
 673 struct nfs4_statfs_arg {
 674         const struct nfs_fh *           fh;
 675         const u32 *                     bitmask;
 676 };
 677
 678 struct nfs4_server_caps_res {
 679         u32                             attr_bitmask[2];
 680         u32                             acl_bitmask;
 681         u32                             has_links;
 682         u32                             has_symlinks;
 683 };
 684
 685 struct nfs4_string {
 686         unsigned int len;
 687         char *data;
 688 };
 689
 690 #define NFS4_PATHNAME_MAXCOMPONENTS 512
 691 struct nfs4_pathname {
 692         unsigned int ncomponents;
 693         struct nfs4_string components[NFS4_PATHNAME_MAXCOMPONENTS];
 694 };
 695
 696 #define NFS4_FS_LOCATION_MAXSERVERS 10
 697 struct nfs4_fs_location {
 698         unsigned int nservers;
 699         struct nfs4_string servers[NFS4_FS_LOCATION_MAXSERVERS];
 700         struct nfs4_pathname rootpath;
 701 };
 702
 703 #define NFS4_FS_LOCATIONS_MAXENTRIES 10
 704 struct nfs4_fs_locations {
 705         struct nfs_fattr fattr;
 706         const struct nfs_server *server;
 707         struct nfs4_pathname fs_path;
 708         int nlocations;
 709         struct nfs4_fs_location locations[NFS4_FS_LOCATIONS_MAXENTRIES];
 710 };
 711
 712 struct nfs4_fs_locations_arg {
 713         const struct nfs_fh *dir_fh;
 714         const struct qstr *name;
 715         struct page *page;
 716         const u32 *bitmask;
 717 };
 718
 719 #endif /* CONFIG_NFS_V4 */
 720
 721 struct nfs_page;
 722
 723 #define NFS_PAGEVEC_SIZE        (8U)
 724
 725 struct nfs_read_data {
 726         int                     flags;
 727         struct rpc_task         task;
 728         struct inode            *inode;
 729         struct rpc_cred         *cred;
 730         struct nfs_fattr        fattr;  /* fattr storage */
 731         struct list_head        pages;  /* Coalesced read requests */
 732         struct nfs_page         *req;   /* multi ops per nfs_page */
 733         struct page             **pagevec;
 734         unsigned int            npages; /* Max length of pagevec */
 735         struct nfs_readargs args;
 736         struct nfs_readres  res;
 737 #ifdef CONFIG_NFS_V4
 738         unsigned long           timestamp;      /* For lease renewal */
 739 #endif
 740         struct page             *page_array[NFS_PAGEVEC_SIZE];
 741 };
 742
 743 struct nfs_write_data {
 744         int                     flags;
 745         struct rpc_task         task;
 746         struct inode            *inode;
 747         struct rpc_cred         *cred;
 748         struct nfs_fattr        fattr;
 749         struct nfs_writeverf    verf;
 750         struct list_head        pages;          /* Coalesced requests we wish to flush */
 751         struct nfs_page         *req;           /* multi ops per nfs_page */
 752         struct page             **pagevec;
 753         unsigned int            npages;         /* Max length of pagevec */
 754         struct nfs_writeargs    args;           /* argument struct */
 755         struct nfs_writeres     res;            /* result struct */
 756 #ifdef CONFIG_NFS_V4
 757         unsigned long           timestamp;      /* For lease renewal */
 758 #endif
 759         struct page             *page_array[NFS_PAGEVEC_SIZE];
 760 };
 761
 762 struct nfs_access_entry;
 763
 764 /*
 765  * RPC procedure vector for NFSv2/NFSv3 demuxing
 766  */
 767 struct nfs_rpc_ops {
 768         int     version;                /* Protocol version */
 769         struct dentry_operations *dentry_ops;
 770         const struct inode_operations *dir_inode_ops;
 771         const struct inode_operations *file_inode_ops;
 772
 773         int     (*getroot) (struct nfs_server *, struct nfs_fh *,
 774                             struct nfs_fsinfo *);
 775         int     (*lookupfh)(struct nfs_server *, struct nfs_fh *,
 776                             struct qstr *, struct nfs_fh *,
 777                             struct nfs_fattr *);
 778         int     (*getattr) (struct nfs_server *, struct nfs_fh *,
 779                             struct nfs_fattr *);
 780         int     (*setattr) (struct dentry *, struct nfs_fattr *,
 781                             struct iattr *);
 782         int     (*lookup)  (struct inode *, struct qstr *,
 783                             struct nfs_fh *, struct nfs_fattr *);
 784         int     (*access)  (struct inode *, struct nfs_access_entry *);
 785         int     (*readlink)(struct inode *, struct page *, unsigned int,
 786                             unsigned int);
 787         int     (*create)  (struct inode *, struct dentry *,
 788                             struct iattr *, int, struct nameidata *);
 789         int     (*remove)  (struct inode *, struct qstr *);
 790         int     (*unlink_setup)  (struct rpc_message *,
 791                             struct dentry *, struct qstr *);
 792         int     (*unlink_done) (struct dentry *, struct rpc_task *);
 793         int     (*rename)  (struct inode *, struct qstr *,
 794                             struct inode *, struct qstr *);
 795         int     (*link)    (struct inode *, struct inode *, struct qstr *);
 796         int     (*symlink) (struct inode *, struct dentry *, struct page *,
 797                             unsigned int, struct iattr *);
 798         int     (*mkdir)   (struct inode *, struct dentry *, struct iattr *);
 799         int     (*rmdir)   (struct inode *, struct qstr *);
 800         int     (*readdir) (struct dentry *, struct rpc_cred *,
 801                             u64, struct page *, unsigned int, int);
 802         int     (*mknod)   (struct inode *, struct dentry *, struct iattr *,
 803                             dev_t);
 804         int     (*statfs)  (struct nfs_server *, struct nfs_fh *,
 805                             struct nfs_fsstat *);
 806         int     (*fsinfo)  (struct nfs_server *, struct nfs_fh *,
 807                             struct nfs_fsinfo *);
 808         int     (*pathconf) (struct nfs_server *, struct nfs_fh *,
 809                              struct nfs_pathconf *);
 810         int     (*set_capabilities)(struct nfs_server *, struct nfs_fh *);
 811         __be32 *(*decode_dirent)(__be32 *, struct nfs_entry *, int plus);
 812         void    (*read_setup)   (struct nfs_read_data *);
 813         int     (*read_done)  (struct rpc_task *, struct nfs_read_data *);
 814         void    (*write_setup)  (struct nfs_write_data *, int how);
 815         int     (*write_done)  (struct rpc_task *, struct nfs_write_data *);
 816         void    (*commit_setup) (struct nfs_write_data *, int how);
 817         int     (*commit_done) (struct rpc_task *, struct nfs_write_data *);
 818         int     (*file_open)   (struct inode *, struct file *);
 819         int     (*file_release) (struct inode *, struct file *);
 820         int     (*lock)(struct file *, int, struct file_lock *);
 821         void    (*clear_acl_cache)(struct inode *);
 822 };
 823
 824 /*
 825  *      NFS_CALL(getattr, inode, (fattr));
 826  * into
 827  *      NFS_PROTO(inode)->getattr(fattr);
 828  */
 829 #define NFS_CALL(op, inode, args)       NFS_PROTO(inode)->op args
 830
 831 /*
 832  * Function vectors etc. for the NFS client
 833  */
 834 extern const struct nfs_rpc_ops nfs_v2_clientops;
 835 extern const struct nfs_rpc_ops nfs_v3_clientops;
 836 extern const struct nfs_rpc_ops nfs_v4_clientops;
 837 extern struct rpc_version       nfs_version2;
 838 extern struct rpc_version       nfs_version3;
 839 extern struct rpc_version       nfs_version4;
 840
 841 extern struct rpc_version       nfsacl_version3;
 842 extern struct rpc_program       nfsacl_program;
 843
 844 #endif