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         dev_t                   rdev;
  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         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         unsigned long           gencount;
  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_WCC_V4         0x0010          /* pre-op change attribute */
  67 #define NFS_ATTR_FATTR_V4_REFERRAL      0x0020          /* NFSv4 referral */
  68
  69 /*
  70  * Info on the file system
  71  */
  72 struct nfs_fsinfo {
  73         struct nfs_fattr        *fattr; /* Post-op attributes */
  74         __u32                   rtmax;  /* max.  read transfer size */
  75         __u32                   rtpref; /* pref. read transfer size */
  76         __u32                   rtmult; /* reads should be multiple of this */
  77         __u32                   wtmax;  /* max.  write transfer size */
  78         __u32                   wtpref; /* pref. write transfer size */
  79         __u32                   wtmult; /* writes should be multiple of this */
  80         __u32                   dtpref; /* pref. readdir transfer size */
  81         __u64                   maxfilesize;
  82         __u32                   lease_time; /* in seconds */
  83 };
  84
  85 struct nfs_fsstat {
  86         struct nfs_fattr        *fattr; /* Post-op attributes */
  87         __u64                   tbytes; /* total size in bytes */
  88         __u64                   fbytes; /* # of free bytes */
  89         __u64                   abytes; /* # of bytes available to user */
  90         __u64                   tfiles; /* # of files */
  91         __u64                   ffiles; /* # of free files */
  92         __u64                   afiles; /* # of files available to user */
  93 };
  94
  95 struct nfs2_fsstat {
  96         __u32                   tsize;  /* Server transfer size */
  97         __u32                   bsize;  /* Filesystem block size */
  98         __u32                   blocks; /* No. of "bsize" blocks on filesystem */
  99         __u32                   bfree;  /* No. of free "bsize" blocks */
 100         __u32                   bavail; /* No. of available "bsize" blocks */
 101 };
 102
 103 struct nfs_pathconf {
 104         struct nfs_fattr        *fattr; /* Post-op attributes */
 105         __u32                   max_link; /* max # of hard links */
 106         __u32                   max_namelen; /* max name length */
 107 };
 108
 109 struct nfs4_change_info {
 110         u32                     atomic;
 111         u64                     before;
 112         u64                     after;
 113 };
 114
 115 struct nfs_seqid;
 116 /*
 117  * Arguments to the open call.
 118  */
 119 struct nfs_openargs {
 120         const struct nfs_fh *   fh;
 121         struct nfs_seqid *      seqid;
 122         int                     open_flags;
 123         fmode_t                 fmode;
 124         __u64                   clientid;
 125         __u64                   id;
 126         union {
 127                 struct iattr *  attrs;    /* UNCHECKED, GUARDED */
 128                 nfs4_verifier   verifier; /* EXCLUSIVE */
 129                 nfs4_stateid    delegation;             /* CLAIM_DELEGATE_CUR */
 130                 fmode_t         delegation_type;        /* CLAIM_PREVIOUS */
 131         } u;
 132         const struct qstr *     name;
 133         const struct nfs_server *server;         /* Needed for ID mapping */
 134         const u32 *             bitmask;
 135         __u32                   claim;
 136 };
 137
 138 struct nfs_openres {
 139         nfs4_stateid            stateid;
 140         struct nfs_fh           fh;
 141         struct nfs4_change_info cinfo;
 142         __u32                   rflags;
 143         struct nfs_fattr *      f_attr;
 144         struct nfs_fattr *      dir_attr;
 145         struct nfs_seqid *      seqid;
 146         const struct nfs_server *server;
 147         fmode_t                 delegation_type;
 148         nfs4_stateid            delegation;
 149         __u32                   do_recall;
 150         __u64                   maxsize;
 151         __u32                   attrset[NFS4_BITMAP_SIZE];
 152 };
 153
 154 /*
 155  * Arguments to the open_confirm call.
 156  */
 157 struct nfs_open_confirmargs {
 158         const struct nfs_fh *   fh;
 159         nfs4_stateid *          stateid;
 160         struct nfs_seqid *      seqid;
 161 };
 162
 163 struct nfs_open_confirmres {
 164         nfs4_stateid            stateid;
 165         struct nfs_seqid *      seqid;
 166 };
 167
 168 /*
 169  * Arguments to the close call.
 170  */
 171 struct nfs_closeargs {
 172         struct nfs_fh *         fh;
 173         nfs4_stateid *          stateid;
 174         struct nfs_seqid *      seqid;
 175         fmode_t                 fmode;
 176         const u32 *             bitmask;
 177 };
 178
 179 struct nfs_closeres {
 180         nfs4_stateid            stateid;
 181         struct nfs_fattr *      fattr;
 182         struct nfs_seqid *      seqid;
 183         const struct nfs_server *server;
 184 };
 185 /*
 186  *  * Arguments to the lock,lockt, and locku call.
 187  *   */
 188 struct nfs_lowner {
 189         __u64                   clientid;
 190         __u64                   id;
 191 };
 192
 193 struct nfs_lock_args {
 194         struct nfs_fh *         fh;
 195         struct file_lock *      fl;
 196         struct nfs_seqid *      lock_seqid;
 197         nfs4_stateid *          lock_stateid;
 198         struct nfs_seqid *      open_seqid;
 199         nfs4_stateid *          open_stateid;
 200         struct nfs_lowner       lock_owner;
 201         unsigned char           block : 1;
 202         unsigned char           reclaim : 1;
 203         unsigned char           new_lock_owner : 1;
 204 };
 205
 206 struct nfs_lock_res {
 207         nfs4_stateid            stateid;
 208         struct nfs_seqid *      lock_seqid;
 209         struct nfs_seqid *      open_seqid;
 210 };
 211
 212 struct nfs_locku_args {
 213         struct nfs_fh *         fh;
 214         struct file_lock *      fl;
 215         struct nfs_seqid *      seqid;
 216         nfs4_stateid *          stateid;
 217 };
 218
 219 struct nfs_locku_res {
 220         nfs4_stateid            stateid;
 221         struct nfs_seqid *      seqid;
 222 };
 223
 224 struct nfs_lockt_args {
 225         struct nfs_fh *         fh;
 226         struct file_lock *      fl;
 227         struct nfs_lowner       lock_owner;
 228 };
 229
 230 struct nfs_lockt_res {
 231         struct file_lock *      denied; /* LOCK, LOCKT failed */
 232 };
 233
 234 struct nfs4_delegreturnargs {
 235         const struct nfs_fh *fhandle;
 236         const nfs4_stateid *stateid;
 237         const u32 * bitmask;
 238 };
 239
 240 struct nfs4_delegreturnres {
 241         struct nfs_fattr * fattr;
 242         const struct nfs_server *server;
 243 };
 244
 245 /*
 246  * Arguments to the read call.
 247  */
 248 struct nfs_readargs {
 249         struct nfs_fh *         fh;
 250         struct nfs_open_context *context;
 251         __u64                   offset;
 252         __u32                   count;
 253         unsigned int            pgbase;
 254         struct page **          pages;
 255 };
 256
 257 struct nfs_readres {
 258         struct nfs_fattr *      fattr;
 259         __u32                   count;
 260         int                     eof;
 261 };
 262
 263 /*
 264  * Arguments to the write call.
 265  */
 266 struct nfs_writeargs {
 267         struct nfs_fh *         fh;
 268         struct nfs_open_context *context;
 269         __u64                   offset;
 270         __u32                   count;
 271         enum nfs3_stable_how    stable;
 272         unsigned int            pgbase;
 273         struct page **          pages;
 274         const u32 *             bitmask;
 275 };
 276
 277 struct nfs_writeverf {
 278         enum nfs3_stable_how    committed;
 279         __be32                  verifier[2];
 280 };
 281
 282 struct nfs_writeres {
 283         struct nfs_fattr *      fattr;
 284         struct nfs_writeverf *  verf;
 285         __u32                   count;
 286         const struct nfs_server *server;
 287 };
 288
 289 /*
 290  * Common arguments to the unlink call
 291  */
 292 struct nfs_removeargs {
 293         const struct nfs_fh     *fh;
 294         struct qstr             name;
 295         const u32 *             bitmask;
 296 };
 297
 298 struct nfs_removeres {
 299         const struct nfs_server *server;
 300         struct nfs4_change_info cinfo;
 301         struct nfs_fattr        dir_attr;
 302 };
 303
 304 /*
 305  * Argument struct for decode_entry function
 306  */
 307 struct nfs_entry {
 308         __u64                   ino;
 309         __u64                   cookie,
 310                                 prev_cookie;
 311         const char *            name;
 312         unsigned int            len;
 313         int                     eof;
 314         struct nfs_fh *         fh;
 315         struct nfs_fattr *      fattr;
 316 };
 317
 318 /*
 319  * The following types are for NFSv2 only.
 320  */
 321 struct nfs_sattrargs {
 322         struct nfs_fh *         fh;
 323         struct iattr *          sattr;
 324 };
 325
 326 struct nfs_diropargs {
 327         struct nfs_fh *         fh;
 328         const char *            name;
 329         unsigned int            len;
 330 };
 331
 332 struct nfs_createargs {
 333         struct nfs_fh *         fh;
 334         const char *            name;
 335         unsigned int            len;
 336         struct iattr *          sattr;
 337 };
 338
 339 struct nfs_renameargs {
 340         struct nfs_fh *         fromfh;
 341         const char *            fromname;
 342         unsigned int            fromlen;
 343         struct nfs_fh *         tofh;
 344         const char *            toname;
 345         unsigned int            tolen;
 346 };
 347
 348 struct nfs_setattrargs {
 349         struct nfs_fh *                 fh;
 350         nfs4_stateid                    stateid;
 351         struct iattr *                  iap;
 352         const struct nfs_server *       server; /* Needed for name mapping */
 353         const u32 *                     bitmask;
 354 };
 355
 356 struct nfs_setaclargs {
 357         struct nfs_fh *                 fh;
 358         size_t                          acl_len;
 359         unsigned int                    acl_pgbase;
 360         struct page **                  acl_pages;
 361 };
 362
 363 struct nfs_getaclargs {
 364         struct nfs_fh *                 fh;
 365         size_t                          acl_len;
 366         unsigned int                    acl_pgbase;
 367         struct page **                  acl_pages;
 368 };
 369
 370 struct nfs_setattrres {
 371         struct nfs_fattr *              fattr;
 372         const struct nfs_server *       server;
 373 };
 374
 375 struct nfs_linkargs {
 376         struct nfs_fh *         fromfh;
 377         struct nfs_fh *         tofh;
 378         const char *            toname;
 379         unsigned int            tolen;
 380 };
 381
 382 struct nfs_symlinkargs {
 383         struct nfs_fh *         fromfh;
 384         const char *            fromname;
 385         unsigned int            fromlen;
 386         struct page **          pages;
 387         unsigned int            pathlen;
 388         struct iattr *          sattr;
 389 };
 390
 391 struct nfs_readdirargs {
 392         struct nfs_fh *         fh;
 393         __u32                   cookie;
 394         unsigned int            count;
 395         struct page **          pages;
 396 };
 397
 398 struct nfs3_getaclargs {
 399         struct nfs_fh *         fh;
 400         int                     mask;
 401         struct page **          pages;
 402 };
 403
 404 struct nfs3_setaclargs {
 405         struct inode *          inode;
 406         int                     mask;
 407         struct posix_acl *      acl_access;
 408         struct posix_acl *      acl_default;
 409         struct page **          pages;
 410 };
 411
 412 struct nfs_diropok {
 413         struct nfs_fh *         fh;
 414         struct nfs_fattr *      fattr;
 415 };
 416
 417 struct nfs_readlinkargs {
 418         struct nfs_fh *         fh;
 419         unsigned int            pgbase;
 420         unsigned int            pglen;
 421         struct page **          pages;
 422 };
 423
 424 struct nfs3_sattrargs {
 425         struct nfs_fh *         fh;
 426         struct iattr *          sattr;
 427         unsigned int            guard;
 428         struct timespec         guardtime;
 429 };
 430
 431 struct nfs3_diropargs {
 432         struct nfs_fh *         fh;
 433         const char *            name;
 434         unsigned int            len;
 435 };
 436
 437 struct nfs3_accessargs {
 438         struct nfs_fh *         fh;
 439         __u32                   access;
 440 };
 441
 442 struct nfs3_createargs {
 443         struct nfs_fh *         fh;
 444         const char *            name;
 445         unsigned int            len;
 446         struct iattr *          sattr;
 447         enum nfs3_createmode    createmode;
 448         __be32                  verifier[2];
 449 };
 450
 451 struct nfs3_mkdirargs {
 452         struct nfs_fh *         fh;
 453         const char *            name;
 454         unsigned int            len;
 455         struct iattr *          sattr;
 456 };
 457
 458 struct nfs3_symlinkargs {
 459         struct nfs_fh *         fromfh;
 460         const char *            fromname;
 461         unsigned int            fromlen;
 462         struct page **          pages;
 463         unsigned int            pathlen;
 464         struct iattr *          sattr;
 465 };
 466
 467 struct nfs3_mknodargs {
 468         struct nfs_fh *         fh;
 469         const char *            name;
 470         unsigned int            len;
 471         enum nfs3_ftype         type;
 472         struct iattr *          sattr;
 473         dev_t                   rdev;
 474 };
 475
 476 struct nfs3_renameargs {
 477         struct nfs_fh *         fromfh;
 478         const char *            fromname;
 479         unsigned int            fromlen;
 480         struct nfs_fh *         tofh;
 481         const char *            toname;
 482         unsigned int            tolen;
 483 };
 484
 485 struct nfs3_linkargs {
 486         struct nfs_fh *         fromfh;
 487         struct nfs_fh *         tofh;
 488         const char *            toname;
 489         unsigned int            tolen;
 490 };
 491
 492 struct nfs3_readdirargs {
 493         struct nfs_fh *         fh;
 494         __u64                   cookie;
 495         __be32                  verf[2];
 496         int                     plus;
 497         unsigned int            count;
 498         struct page **          pages;
 499 };
 500
 501 struct nfs3_diropres {
 502         struct nfs_fattr *      dir_attr;
 503         struct nfs_fh *         fh;
 504         struct nfs_fattr *      fattr;
 505 };
 506
 507 struct nfs3_accessres {
 508         struct nfs_fattr *      fattr;
 509         __u32                   access;
 510 };
 511
 512 struct nfs3_readlinkargs {
 513         struct nfs_fh *         fh;
 514         unsigned int            pgbase;
 515         unsigned int            pglen;
 516         struct page **          pages;
 517 };
 518
 519 struct nfs3_renameres {
 520         struct nfs_fattr *      fromattr;
 521         struct nfs_fattr *      toattr;
 522 };
 523
 524 struct nfs3_linkres {
 525         struct nfs_fattr *      dir_attr;
 526         struct nfs_fattr *      fattr;
 527 };
 528
 529 struct nfs3_readdirres {
 530         struct nfs_fattr *      dir_attr;
 531         __be32 *                verf;
 532         int                     plus;
 533 };
 534
 535 struct nfs3_getaclres {
 536         struct nfs_fattr *      fattr;
 537         int                     mask;
 538         unsigned int            acl_access_count;
 539         unsigned int            acl_default_count;
 540         struct posix_acl *      acl_access;
 541         struct posix_acl *      acl_default;
 542 };
 543
 544 #ifdef CONFIG_NFS_V4
 545
 546 typedef u64 clientid4;
 547
 548 struct nfs4_accessargs {
 549         const struct nfs_fh *           fh;
 550         const u32 *                     bitmask;
 551         u32                             access;
 552 };
 553
 554 struct nfs4_accessres {
 555         const struct nfs_server *       server;
 556         struct nfs_fattr *              fattr;
 557         u32                             supported;
 558         u32                             access;
 559 };
 560
 561 struct nfs4_create_arg {
 562         u32                             ftype;
 563         union {
 564                 struct {
 565                         struct page **  pages;
 566                         unsigned int    len;
 567                 } symlink;   /* NF4LNK */
 568                 struct {
 569                         u32             specdata1;
 570                         u32             specdata2;
 571                 } device;    /* NF4BLK, NF4CHR */
 572         } u;
 573         const struct qstr *             name;
 574         const struct nfs_server *       server;
 575         const struct iattr *            attrs;
 576         const struct nfs_fh *           dir_fh;
 577         const u32 *                     bitmask;
 578 };
 579
 580 struct nfs4_create_res {
 581         const struct nfs_server *       server;
 582         struct nfs_fh *                 fh;
 583         struct nfs_fattr *              fattr;
 584         struct nfs4_change_info         dir_cinfo;
 585         struct nfs_fattr *              dir_fattr;
 586 };
 587
 588 struct nfs4_fsinfo_arg {
 589         const struct nfs_fh *           fh;
 590         const u32 *                     bitmask;
 591 };
 592
 593 struct nfs4_getattr_arg {
 594         const struct nfs_fh *           fh;
 595         const u32 *                     bitmask;
 596 };
 597
 598 struct nfs4_getattr_res {
 599         const struct nfs_server *       server;
 600         struct nfs_fattr *              fattr;
 601 };
 602
 603 struct nfs4_link_arg {
 604         const struct nfs_fh *           fh;
 605         const struct nfs_fh *           dir_fh;
 606         const struct qstr *             name;
 607         const u32 *                     bitmask;
 608 };
 609
 610 struct nfs4_link_res {
 611         const struct nfs_server *       server;
 612         struct nfs_fattr *              fattr;
 613         struct nfs4_change_info         cinfo;
 614         struct nfs_fattr *              dir_attr;
 615 };
 616
 617
 618 struct nfs4_lookup_arg {
 619         const struct nfs_fh *           dir_fh;
 620         const struct qstr *             name;
 621         const u32 *                     bitmask;
 622 };
 623
 624 struct nfs4_lookup_res {
 625         const struct nfs_server *       server;
 626         struct nfs_fattr *              fattr;
 627         struct nfs_fh *                 fh;
 628 };
 629
 630 struct nfs4_lookup_root_arg {
 631         const u32 *                     bitmask;
 632 };
 633
 634 struct nfs4_pathconf_arg {
 635         const struct nfs_fh *           fh;
 636         const u32 *                     bitmask;
 637 };
 638
 639 struct nfs4_readdir_arg {
 640         const struct nfs_fh *           fh;
 641         u64                             cookie;
 642         nfs4_verifier                   verifier;
 643         u32                             count;
 644         struct page **                  pages;  /* zero-copy data */
 645         unsigned int                    pgbase; /* zero-copy data */
 646         const u32 *                     bitmask;
 647 };
 648
 649 struct nfs4_readdir_res {
 650         nfs4_verifier                   verifier;
 651         unsigned int                    pgbase;
 652 };
 653
 654 struct nfs4_readlink {
 655         const struct nfs_fh *           fh;
 656         unsigned int                    pgbase;
 657         unsigned int                    pglen;   /* zero-copy data */
 658         struct page **                  pages;   /* zero-copy data */
 659 };
 660
 661 struct nfs4_rename_arg {
 662         const struct nfs_fh *           old_dir;
 663         const struct nfs_fh *           new_dir;
 664         const struct qstr *             old_name;
 665         const struct qstr *             new_name;
 666         const u32 *                     bitmask;
 667 };
 668
 669 struct nfs4_rename_res {
 670         const struct nfs_server *       server;
 671         struct nfs4_change_info         old_cinfo;
 672         struct nfs_fattr *              old_fattr;
 673         struct nfs4_change_info         new_cinfo;
 674         struct nfs_fattr *              new_fattr;
 675 };
 676
 677 #define NFS4_SETCLIENTID_NAMELEN        (127)
 678 struct nfs4_setclientid {
 679         const nfs4_verifier *           sc_verifier;
 680         unsigned int                    sc_name_len;
 681         char                            sc_name[NFS4_SETCLIENTID_NAMELEN + 1];
 682         u32                             sc_prog;
 683         unsigned int                    sc_netid_len;
 684         char                            sc_netid[RPCBIND_MAXNETIDLEN + 1];
 685         unsigned int                    sc_uaddr_len;
 686         char                            sc_uaddr[RPCBIND_MAXUADDRLEN + 1];
 687         u32                             sc_cb_ident;
 688 };
 689
 690 struct nfs4_statfs_arg {
 691         const struct nfs_fh *           fh;
 692         const u32 *                     bitmask;
 693 };
 694
 695 struct nfs4_server_caps_res {
 696         u32                             attr_bitmask[2];
 697         u32                             acl_bitmask;
 698         u32                             has_links;
 699         u32                             has_symlinks;
 700 };
 701
 702 struct nfs4_string {
 703         unsigned int len;
 704         char *data;
 705 };
 706
 707 #define NFS4_PATHNAME_MAXCOMPONENTS 512
 708 struct nfs4_pathname {
 709         unsigned int ncomponents;
 710         struct nfs4_string components[NFS4_PATHNAME_MAXCOMPONENTS];
 711 };
 712
 713 #define NFS4_FS_LOCATION_MAXSERVERS 10
 714 struct nfs4_fs_location {
 715         unsigned int nservers;
 716         struct nfs4_string servers[NFS4_FS_LOCATION_MAXSERVERS];
 717         struct nfs4_pathname rootpath;
 718 };
 719
 720 #define NFS4_FS_LOCATIONS_MAXENTRIES 10
 721 struct nfs4_fs_locations {
 722         struct nfs_fattr fattr;
 723         const struct nfs_server *server;
 724         struct nfs4_pathname fs_path;
 725         int nlocations;
 726         struct nfs4_fs_location locations[NFS4_FS_LOCATIONS_MAXENTRIES];
 727 };
 728
 729 struct nfs4_fs_locations_arg {
 730         const struct nfs_fh *dir_fh;
 731         const struct qstr *name;
 732         struct page *page;
 733         const u32 *bitmask;
 734 };
 735
 736 #endif /* CONFIG_NFS_V4 */
 737
 738 struct nfs_page;
 739
 740 #define NFS_PAGEVEC_SIZE        (8U)
 741
 742 struct nfs_read_data {
 743         int                     flags;
 744         struct rpc_task         task;
 745         struct inode            *inode;
 746         struct rpc_cred         *cred;
 747         struct nfs_fattr        fattr;  /* fattr storage */
 748         struct list_head        pages;  /* Coalesced read requests */
 749         struct nfs_page         *req;   /* multi ops per nfs_page */
 750         struct page             **pagevec;
 751         unsigned int            npages; /* Max length of pagevec */
 752         struct nfs_readargs args;
 753         struct nfs_readres  res;
 754 #ifdef CONFIG_NFS_V4
 755         unsigned long           timestamp;      /* For lease renewal */
 756 #endif
 757         struct page             *page_array[NFS_PAGEVEC_SIZE];
 758 };
 759
 760 struct nfs_write_data {
 761         int                     flags;
 762         struct rpc_task         task;
 763         struct inode            *inode;
 764         struct rpc_cred         *cred;
 765         struct nfs_fattr        fattr;
 766         struct nfs_writeverf    verf;
 767         struct list_head        pages;          /* Coalesced requests we wish to flush */
 768         struct nfs_page         *req;           /* multi ops per nfs_page */
 769         struct page             **pagevec;
 770         unsigned int            npages;         /* Max length of pagevec */
 771         struct nfs_writeargs    args;           /* argument struct */
 772         struct nfs_writeres     res;            /* result struct */
 773 #ifdef CONFIG_NFS_V4
 774         unsigned long           timestamp;      /* For lease renewal */
 775 #endif
 776         struct page             *page_array[NFS_PAGEVEC_SIZE];
 777 };
 778
 779 struct nfs_access_entry;
 780
 781 /*
 782  * RPC procedure vector for NFSv2/NFSv3 demuxing
 783  */
 784 struct nfs_rpc_ops {
 785         u32     version;                /* Protocol version */
 786         struct dentry_operations *dentry_ops;
 787         const struct inode_operations *dir_inode_ops;
 788         const struct inode_operations *file_inode_ops;
 789
 790         int     (*getroot) (struct nfs_server *, struct nfs_fh *,
 791                             struct nfs_fsinfo *);
 792         int     (*lookupfh)(struct nfs_server *, struct nfs_fh *,
 793                             struct qstr *, struct nfs_fh *,
 794                             struct nfs_fattr *);
 795         int     (*getattr) (struct nfs_server *, struct nfs_fh *,
 796                             struct nfs_fattr *);
 797         int     (*setattr) (struct dentry *, struct nfs_fattr *,
 798                             struct iattr *);
 799         int     (*lookup)  (struct inode *, struct qstr *,
 800                             struct nfs_fh *, struct nfs_fattr *);
 801         int     (*access)  (struct inode *, struct nfs_access_entry *);
 802         int     (*readlink)(struct inode *, struct page *, unsigned int,
 803                             unsigned int);
 804         int     (*create)  (struct inode *, struct dentry *,
 805                             struct iattr *, int, struct nameidata *);
 806         int     (*remove)  (struct inode *, struct qstr *);
 807         void    (*unlink_setup)  (struct rpc_message *, struct inode *dir);
 808         int     (*unlink_done) (struct rpc_task *, struct inode *);
 809         int     (*rename)  (struct inode *, struct qstr *,
 810                             struct inode *, struct qstr *);
 811         int     (*link)    (struct inode *, struct inode *, struct qstr *);
 812         int     (*symlink) (struct inode *, struct dentry *, struct page *,
 813                             unsigned int, struct iattr *);
 814         int     (*mkdir)   (struct inode *, struct dentry *, struct iattr *);
 815         int     (*rmdir)   (struct inode *, struct qstr *);
 816         int     (*readdir) (struct dentry *, struct rpc_cred *,
 817                             u64, struct page *, unsigned int, int);
 818         int     (*mknod)   (struct inode *, struct dentry *, struct iattr *,
 819                             dev_t);
 820         int     (*statfs)  (struct nfs_server *, struct nfs_fh *,
 821                             struct nfs_fsstat *);
 822         int     (*fsinfo)  (struct nfs_server *, struct nfs_fh *,
 823                             struct nfs_fsinfo *);
 824         int     (*pathconf) (struct nfs_server *, struct nfs_fh *,
 825                              struct nfs_pathconf *);
 826         int     (*set_capabilities)(struct nfs_server *, struct nfs_fh *);
 827         __be32 *(*decode_dirent)(__be32 *, struct nfs_entry *, int plus);
 828         void    (*read_setup)   (struct nfs_read_data *, struct rpc_message *);
 829         int     (*read_done)  (struct rpc_task *, struct nfs_read_data *);
 830         void    (*write_setup)  (struct nfs_write_data *, struct rpc_message *);
 831         int     (*write_done)  (struct rpc_task *, struct nfs_write_data *);
 832         void    (*commit_setup) (struct nfs_write_data *, struct rpc_message *);
 833         int     (*commit_done) (struct rpc_task *, struct nfs_write_data *);
 834         int     (*lock)(struct file *, int, struct file_lock *);
 835         int     (*lock_check_bounds)(const struct file_lock *);
 836         void    (*clear_acl_cache)(struct inode *);
 837 };
 838
 839 /*
 840  *      NFS_CALL(getattr, inode, (fattr));
 841  * into
 842  *      NFS_PROTO(inode)->getattr(fattr);
 843  */
 844 #define NFS_CALL(op, inode, args)       NFS_PROTO(inode)->op args
 845
 846 /*
 847  * Function vectors etc. for the NFS client
 848  */
 849 extern const struct nfs_rpc_ops nfs_v2_clientops;
 850 extern const struct nfs_rpc_ops nfs_v3_clientops;
 851 extern const struct nfs_rpc_ops nfs_v4_clientops;
 852 extern struct rpc_version       nfs_version2;
 853 extern struct rpc_version       nfs_version3;
 854 extern struct rpc_version       nfs_version4;
 855
 856 extern struct rpc_version       nfsacl_version3;
 857 extern struct rpc_program       nfsacl_program;
 858
 859 #endif