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