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_WCC_V4         0x0010          /* pre-op change attribute */
  66 #define NFS_ATTR_FATTR_V4_REFERRAL      0x0020          /* NFSv4 referral */
  67
  68 /*
  69  * Info on the file system
  70  */
  71 struct nfs_fsinfo {
  72         struct nfs_fattr        *fattr; /* Post-op attributes */
  73         __u32                   rtmax;  /* max.  read transfer size */
  74         __u32                   rtpref; /* pref. read transfer size */
  75         __u32                   rtmult; /* reads should be multiple of this */
  76         __u32                   wtmax;  /* max.  write transfer size */
  77         __u32                   wtpref; /* pref. write transfer size */
  78         __u32                   wtmult; /* writes should be multiple of this */
  79         __u32                   dtpref; /* pref. readdir transfer size */
  80         __u64                   maxfilesize;
  81         __u32                   lease_time; /* in seconds */
  82 };
  83
  84 struct nfs_fsstat {
  85         struct nfs_fattr        *fattr; /* Post-op attributes */
  86         __u64                   tbytes; /* total size in bytes */
  87         __u64                   fbytes; /* # of free bytes */
  88         __u64                   abytes; /* # of bytes available to user */
  89         __u64                   tfiles; /* # of files */
  90         __u64                   ffiles; /* # of free files */
  91         __u64                   afiles; /* # of files available to user */
  92 };
  93
  94 struct nfs2_fsstat {
  95         __u32                   tsize;  /* Server transfer size */
  96         __u32                   bsize;  /* Filesystem block size */
  97         __u32                   blocks; /* No. of "bsize" blocks on filesystem */
  98         __u32                   bfree;  /* No. of free "bsize" blocks */
  99         __u32                   bavail; /* No. of available "bsize" blocks */
 100 };
 101
 102 struct nfs_pathconf {
 103         struct nfs_fattr        *fattr; /* Post-op attributes */
 104         __u32                   max_link; /* max # of hard links */
 105         __u32                   max_namelen; /* max name length */
 106 };
 107
 108 struct nfs4_change_info {
 109         u32                     atomic;
 110         u64                     before;
 111         u64                     after;
 112 };
 113
 114 struct nfs_seqid;
 115 /*
 116  * Arguments to the open call.
 117  */
 118 struct nfs_openargs {
 119         const struct nfs_fh *   fh;
 120         struct nfs_seqid *      seqid;
 121         int                     open_flags;
 122         __u64                   clientid;
 123         __u64                   id;
 124         union {
 125                 struct iattr *  attrs;    /* UNCHECKED, GUARDED */
 126                 nfs4_verifier   verifier; /* EXCLUSIVE */
 127                 nfs4_stateid    delegation;             /* CLAIM_DELEGATE_CUR */
 128                 int             delegation_type;        /* CLAIM_PREVIOUS */
 129         } u;
 130         const struct qstr *     name;
 131         const struct nfs_server *server;         /* Needed for ID mapping */
 132         const u32 *             bitmask;
 133         __u32                   claim;
 134 };
 135
 136 struct nfs_openres {
 137         nfs4_stateid            stateid;
 138         struct nfs_fh           fh;
 139         struct nfs4_change_info cinfo;
 140         __u32                   rflags;
 141         struct nfs_fattr *      f_attr;
 142         struct nfs_fattr *      dir_attr;
 143         const struct nfs_server *server;
 144         int                     delegation_type;
 145         nfs4_stateid            delegation;
 146         __u32                   do_recall;
 147         __u64                   maxsize;
 148         __u32                   attrset[NFS4_BITMAP_SIZE];
 149 };
 150
 151 /*
 152  * Arguments to the open_confirm call.
 153  */
 154 struct nfs_open_confirmargs {
 155         const struct nfs_fh *   fh;
 156         nfs4_stateid *          stateid;
 157         struct nfs_seqid *      seqid;
 158 };
 159
 160 struct nfs_open_confirmres {
 161         nfs4_stateid            stateid;
 162 };
 163
 164 /*
 165  * Arguments to the close call.
 166  */
 167 struct nfs_closeargs {
 168         struct nfs_fh *         fh;
 169         nfs4_stateid *          stateid;
 170         struct nfs_seqid *      seqid;
 171         int                     open_flags;
 172         const u32 *             bitmask;
 173 };
 174
 175 struct nfs_closeres {
 176         nfs4_stateid            stateid;
 177         struct nfs_fattr *      fattr;
 178         const struct nfs_server *server;
 179 };
 180 /*
 181  *  * Arguments to the lock,lockt, and locku call.
 182  *   */
 183 struct nfs_lowner {
 184         __u64                   clientid;
 185         __u64                   id;
 186 };
 187
 188 struct nfs_lock_args {
 189         struct nfs_fh *         fh;
 190         struct file_lock *      fl;
 191         struct nfs_seqid *      lock_seqid;
 192         nfs4_stateid *          lock_stateid;
 193         struct nfs_seqid *      open_seqid;
 194         nfs4_stateid *          open_stateid;
 195         struct nfs_lowner       lock_owner;
 196         unsigned char           block : 1;
 197         unsigned char           reclaim : 1;
 198         unsigned char           new_lock_owner : 1;
 199 };
 200
 201 struct nfs_lock_res {
 202         nfs4_stateid                    stateid;
 203 };
 204
 205 struct nfs_locku_args {
 206         struct nfs_fh *         fh;
 207         struct file_lock *      fl;
 208         struct nfs_seqid *      seqid;
 209         nfs4_stateid *          stateid;
 210 };
 211
 212 struct nfs_locku_res {
 213         nfs4_stateid                    stateid;
 214 };
 215
 216 struct nfs_lockt_args {
 217         struct nfs_fh *         fh;
 218         struct file_lock *      fl;
 219         struct nfs_lowner       lock_owner;
 220 };
 221
 222 struct nfs_lockt_res {
 223         struct file_lock *      denied; /* LOCK, LOCKT failed */
 224 };
 225
 226 struct nfs4_delegreturnargs {
 227         const struct nfs_fh *fhandle;
 228         const nfs4_stateid *stateid;
 229         const u32 * bitmask;
 230 };
 231
 232 struct nfs4_delegreturnres {
 233         struct nfs_fattr * fattr;
 234         const struct nfs_server *server;
 235 };
 236
 237 /*
 238  * Arguments to the read call.
 239  */
 240 struct nfs_readargs {
 241         struct nfs_fh *         fh;
 242         struct nfs_open_context *context;
 243         __u64                   offset;
 244         __u32                   count;
 245         unsigned int            pgbase;
 246         struct page **          pages;
 247 };
 248
 249 struct nfs_readres {
 250         struct nfs_fattr *      fattr;
 251         __u32                   count;
 252         int                     eof;
 253 };
 254
 255 /*
 256  * Arguments to the write call.
 257  */
 258 struct nfs_writeargs {
 259         struct nfs_fh *         fh;
 260         struct nfs_open_context *context;
 261         __u64                   offset;
 262         __u32                   count;
 263         enum nfs3_stable_how    stable;
 264         unsigned int            pgbase;
 265         struct page **          pages;
 266         const u32 *             bitmask;
 267 };
 268
 269 struct nfs_writeverf {
 270         enum nfs3_stable_how    committed;
 271         __be32                  verifier[2];
 272 };
 273
 274 struct nfs_writeres {
 275         struct nfs_fattr *      fattr;
 276         struct nfs_writeverf *  verf;
 277         __u32                   count;
 278         const struct nfs_server *server;
 279 };
 280
 281 /*
 282  * Common arguments to the unlink call
 283  */
 284 struct nfs_removeargs {
 285         const struct nfs_fh     *fh;
 286         struct qstr             name;
 287         const u32 *             bitmask;
 288 };
 289
 290 struct nfs_removeres {
 291         const struct nfs_server *server;
 292         struct nfs4_change_info cinfo;
 293         struct nfs_fattr        dir_attr;
 294 };
 295
 296 /*
 297  * Argument struct for decode_entry function
 298  */
 299 struct nfs_entry {
 300         __u64                   ino;
 301         __u64                   cookie,
 302                                 prev_cookie;
 303         const char *            name;
 304         unsigned int            len;
 305         int                     eof;
 306         struct nfs_fh *         fh;
 307         struct nfs_fattr *      fattr;
 308 };
 309
 310 /*
 311  * The following types are for NFSv2 only.
 312  */
 313 struct nfs_sattrargs {
 314         struct nfs_fh *         fh;
 315         struct iattr *          sattr;
 316 };
 317
 318 struct nfs_diropargs {
 319         struct nfs_fh *         fh;
 320         const char *            name;
 321         unsigned int            len;
 322 };
 323
 324 struct nfs_createargs {
 325         struct nfs_fh *         fh;
 326         const char *            name;
 327         unsigned int            len;
 328         struct iattr *          sattr;
 329 };
 330
 331 struct nfs_renameargs {
 332         struct nfs_fh *         fromfh;
 333         const char *            fromname;
 334         unsigned int            fromlen;
 335         struct nfs_fh *         tofh;
 336         const char *            toname;
 337         unsigned int            tolen;
 338 };
 339
 340 struct nfs_setattrargs {
 341         struct nfs_fh *                 fh;
 342         nfs4_stateid                    stateid;
 343         struct iattr *                  iap;
 344         const struct nfs_server *       server; /* Needed for name mapping */
 345         const u32 *                     bitmask;
 346 };
 347
 348 struct nfs_setaclargs {
 349         struct nfs_fh *                 fh;
 350         size_t                          acl_len;
 351         unsigned int                    acl_pgbase;
 352         struct page **                  acl_pages;
 353 };
 354
 355 struct nfs_getaclargs {
 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_setattrres {
 363         struct nfs_fattr *              fattr;
 364         const struct nfs_server *       server;
 365 };
 366
 367 struct nfs_linkargs {
 368         struct nfs_fh *         fromfh;
 369         struct nfs_fh *         tofh;
 370         const char *            toname;
 371         unsigned int            tolen;
 372 };
 373
 374 struct nfs_symlinkargs {
 375         struct nfs_fh *         fromfh;
 376         const char *            fromname;
 377         unsigned int            fromlen;
 378         struct page **          pages;
 379         unsigned int            pathlen;
 380         struct iattr *          sattr;
 381 };
 382
 383 struct nfs_readdirargs {
 384         struct nfs_fh *         fh;
 385         __u32                   cookie;
 386         unsigned int            count;
 387         struct page **          pages;
 388 };
 389
 390 struct nfs3_getaclargs {
 391         struct nfs_fh *         fh;
 392         int                     mask;
 393         struct page **          pages;
 394 };
 395
 396 struct nfs3_setaclargs {
 397         struct inode *          inode;
 398         int                     mask;
 399         struct posix_acl *      acl_access;
 400         struct posix_acl *      acl_default;
 401         struct page **          pages;
 402 };
 403
 404 struct nfs_diropok {
 405         struct nfs_fh *         fh;
 406         struct nfs_fattr *      fattr;
 407 };
 408
 409 struct nfs_readlinkargs {
 410         struct nfs_fh *         fh;
 411         unsigned int            pgbase;
 412         unsigned int            pglen;
 413         struct page **          pages;
 414 };
 415
 416 struct nfs3_sattrargs {
 417         struct nfs_fh *         fh;
 418         struct iattr *          sattr;
 419         unsigned int            guard;
 420         struct timespec         guardtime;
 421 };
 422
 423 struct nfs3_diropargs {
 424         struct nfs_fh *         fh;
 425         const char *            name;
 426         unsigned int            len;
 427 };
 428
 429 struct nfs3_accessargs {
 430         struct nfs_fh *         fh;
 431         __u32                   access;
 432 };
 433
 434 struct nfs3_createargs {
 435         struct nfs_fh *         fh;
 436         const char *            name;
 437         unsigned int            len;
 438         struct iattr *          sattr;
 439         enum nfs3_createmode    createmode;
 440         __be32                  verifier[2];
 441 };
 442
 443 struct nfs3_mkdirargs {
 444         struct nfs_fh *         fh;
 445         const char *            name;
 446         unsigned int            len;
 447         struct iattr *          sattr;
 448 };
 449
 450 struct nfs3_symlinkargs {
 451         struct nfs_fh *         fromfh;
 452         const char *            fromname;
 453         unsigned int            fromlen;
 454         struct page **          pages;
 455         unsigned int            pathlen;
 456         struct iattr *          sattr;
 457 };
 458
 459 struct nfs3_mknodargs {
 460         struct nfs_fh *         fh;
 461         const char *            name;
 462         unsigned int            len;
 463         enum nfs3_ftype         type;
 464         struct iattr *          sattr;
 465         dev_t                   rdev;
 466 };
 467
 468 struct nfs3_renameargs {
 469         struct nfs_fh *         fromfh;
 470         const char *            fromname;
 471         unsigned int            fromlen;
 472         struct nfs_fh *         tofh;
 473         const char *            toname;
 474         unsigned int            tolen;
 475 };
 476
 477 struct nfs3_linkargs {
 478         struct nfs_fh *         fromfh;
 479         struct nfs_fh *         tofh;
 480         const char *            toname;
 481         unsigned int            tolen;
 482 };
 483
 484 struct nfs3_readdirargs {
 485         struct nfs_fh *         fh;
 486         __u64                   cookie;
 487         __be32                  verf[2];
 488         int                     plus;
 489         unsigned int            count;
 490         struct page **          pages;
 491 };
 492
 493 struct nfs3_diropres {
 494         struct nfs_fattr *      dir_attr;
 495         struct nfs_fh *         fh;
 496         struct nfs_fattr *      fattr;
 497 };
 498
 499 struct nfs3_accessres {
 500         struct nfs_fattr *      fattr;
 501         __u32                   access;
 502 };
 503
 504 struct nfs3_readlinkargs {
 505         struct nfs_fh *         fh;
 506         unsigned int            pgbase;
 507         unsigned int            pglen;
 508         struct page **          pages;
 509 };
 510
 511 struct nfs3_renameres {
 512         struct nfs_fattr *      fromattr;
 513         struct nfs_fattr *      toattr;
 514 };
 515
 516 struct nfs3_linkres {
 517         struct nfs_fattr *      dir_attr;
 518         struct nfs_fattr *      fattr;
 519 };
 520
 521 struct nfs3_readdirres {
 522         struct nfs_fattr *      dir_attr;
 523         __be32 *                verf;
 524         int                     plus;
 525 };
 526
 527 struct nfs3_getaclres {
 528         struct nfs_fattr *      fattr;
 529         int                     mask;
 530         unsigned int            acl_access_count;
 531         unsigned int            acl_default_count;
 532         struct posix_acl *      acl_access;
 533         struct posix_acl *      acl_default;
 534 };
 535
 536 #ifdef CONFIG_NFS_V4
 537
 538 typedef u64 clientid4;
 539
 540 struct nfs4_accessargs {
 541         const struct nfs_fh *           fh;
 542         const u32 *                     bitmask;
 543         u32                             access;
 544 };
 545
 546 struct nfs4_accessres {
 547         const struct nfs_server *       server;
 548         struct nfs_fattr *              fattr;
 549         u32                             supported;
 550         u32                             access;
 551 };
 552
 553 struct nfs4_create_arg {
 554         u32                             ftype;
 555         union {
 556                 struct {
 557                         struct page **  pages;
 558                         unsigned int    len;
 559                 } symlink;   /* NF4LNK */
 560                 struct {
 561                         u32             specdata1;
 562                         u32             specdata2;
 563                 } device;    /* NF4BLK, NF4CHR */
 564         } u;
 565         const struct qstr *             name;
 566         const struct nfs_server *       server;
 567         const struct iattr *            attrs;
 568         const struct nfs_fh *           dir_fh;
 569         const u32 *                     bitmask;
 570 };
 571
 572 struct nfs4_create_res {
 573         const struct nfs_server *       server;
 574         struct nfs_fh *                 fh;
 575         struct nfs_fattr *              fattr;
 576         struct nfs4_change_info         dir_cinfo;
 577         struct nfs_fattr *              dir_fattr;
 578 };
 579
 580 struct nfs4_fsinfo_arg {
 581         const struct nfs_fh *           fh;
 582         const u32 *                     bitmask;
 583 };
 584
 585 struct nfs4_getattr_arg {
 586         const struct nfs_fh *           fh;
 587         const u32 *                     bitmask;
 588 };
 589
 590 struct nfs4_getattr_res {
 591         const struct nfs_server *       server;
 592         struct nfs_fattr *              fattr;
 593 };
 594
 595 struct nfs4_link_arg {
 596         const struct nfs_fh *           fh;
 597         const struct nfs_fh *           dir_fh;
 598         const struct qstr *             name;
 599         const u32 *                     bitmask;
 600 };
 601
 602 struct nfs4_link_res {
 603         const struct nfs_server *       server;
 604         struct nfs_fattr *              fattr;
 605         struct nfs4_change_info         cinfo;
 606         struct nfs_fattr *              dir_attr;
 607 };
 608
 609
 610 struct nfs4_lookup_arg {
 611         const struct nfs_fh *           dir_fh;
 612         const struct qstr *             name;
 613         const u32 *                     bitmask;
 614 };
 615
 616 struct nfs4_lookup_res {
 617         const struct nfs_server *       server;
 618         struct nfs_fattr *              fattr;
 619         struct nfs_fh *                 fh;
 620 };
 621
 622 struct nfs4_lookup_root_arg {
 623         const u32 *                     bitmask;
 624 };
 625
 626 struct nfs4_pathconf_arg {
 627         const struct nfs_fh *           fh;
 628         const u32 *                     bitmask;
 629 };
 630
 631 struct nfs4_readdir_arg {
 632         const struct nfs_fh *           fh;
 633         u64                             cookie;
 634         nfs4_verifier                   verifier;
 635         u32                             count;
 636         struct page **                  pages;  /* zero-copy data */
 637         unsigned int                    pgbase; /* zero-copy data */
 638         const u32 *                     bitmask;
 639 };
 640
 641 struct nfs4_readdir_res {
 642         nfs4_verifier                   verifier;
 643         unsigned int                    pgbase;
 644 };
 645
 646 struct nfs4_readlink {
 647         const struct nfs_fh *           fh;
 648         unsigned int                    pgbase;
 649         unsigned int                    pglen;   /* zero-copy data */
 650         struct page **                  pages;   /* zero-copy data */
 651 };
 652
 653 struct nfs4_rename_arg {
 654         const struct nfs_fh *           old_dir;
 655         const struct nfs_fh *           new_dir;
 656         const struct qstr *             old_name;
 657         const struct qstr *             new_name;
 658         const u32 *                     bitmask;
 659 };
 660
 661 struct nfs4_rename_res {
 662         const struct nfs_server *       server;
 663         struct nfs4_change_info         old_cinfo;
 664         struct nfs_fattr *              old_fattr;
 665         struct nfs4_change_info         new_cinfo;
 666         struct nfs_fattr *              new_fattr;
 667 };
 668
 669 #define NFS4_SETCLIENTID_NAMELEN        (56)
 670 struct nfs4_setclientid {
 671         const nfs4_verifier *           sc_verifier;
 672         unsigned int                    sc_name_len;
 673         char                            sc_name[NFS4_SETCLIENTID_NAMELEN];
 674         u32                             sc_prog;
 675         unsigned int                    sc_netid_len;
 676         char                            sc_netid[RPCBIND_MAXNETIDLEN];
 677         unsigned int                    sc_uaddr_len;
 678         char                            sc_uaddr[RPCBIND_MAXUADDRLEN];
 679         u32                             sc_cb_ident;
 680 };
 681
 682 struct nfs4_statfs_arg {
 683         const struct nfs_fh *           fh;
 684         const u32 *                     bitmask;
 685 };
 686
 687 struct nfs4_server_caps_res {
 688         u32                             attr_bitmask[2];
 689         u32                             acl_bitmask;
 690         u32                             has_links;
 691         u32                             has_symlinks;
 692 };
 693
 694 struct nfs4_string {
 695         unsigned int len;
 696         char *data;
 697 };
 698
 699 #define NFS4_PATHNAME_MAXCOMPONENTS 512
 700 struct nfs4_pathname {
 701         unsigned int ncomponents;
 702         struct nfs4_string components[NFS4_PATHNAME_MAXCOMPONENTS];
 703 };
 704
 705 #define NFS4_FS_LOCATION_MAXSERVERS 10
 706 struct nfs4_fs_location {
 707         unsigned int nservers;
 708         struct nfs4_string servers[NFS4_FS_LOCATION_MAXSERVERS];
 709         struct nfs4_pathname rootpath;
 710 };
 711
 712 #define NFS4_FS_LOCATIONS_MAXENTRIES 10
 713 struct nfs4_fs_locations {
 714         struct nfs_fattr fattr;
 715         const struct nfs_server *server;
 716         struct nfs4_pathname fs_path;
 717         int nlocations;
 718         struct nfs4_fs_location locations[NFS4_FS_LOCATIONS_MAXENTRIES];
 719 };
 720
 721 struct nfs4_fs_locations_arg {
 722         const struct nfs_fh *dir_fh;
 723         const struct qstr *name;
 724         struct page *page;
 725         const u32 *bitmask;
 726 };
 727
 728 #endif /* CONFIG_NFS_V4 */
 729
 730 struct nfs_page;
 731
 732 #define NFS_PAGEVEC_SIZE        (8U)
 733
 734 struct nfs_read_data {
 735         int                     flags;
 736         struct rpc_task         task;
 737         struct inode            *inode;
 738         struct rpc_cred         *cred;
 739         struct nfs_fattr        fattr;  /* fattr storage */
 740         struct list_head        pages;  /* Coalesced read requests */
 741         struct nfs_page         *req;   /* multi ops per nfs_page */
 742         struct page             **pagevec;
 743         unsigned int            npages; /* Max length of pagevec */
 744         struct nfs_readargs args;
 745         struct nfs_readres  res;
 746 #ifdef CONFIG_NFS_V4
 747         unsigned long           timestamp;      /* For lease renewal */
 748 #endif
 749         struct page             *page_array[NFS_PAGEVEC_SIZE];
 750 };
 751
 752 struct nfs_write_data {
 753         int                     flags;
 754         struct rpc_task         task;
 755         struct inode            *inode;
 756         struct rpc_cred         *cred;
 757         struct nfs_fattr        fattr;
 758         struct nfs_writeverf    verf;
 759         struct list_head        pages;          /* Coalesced requests we wish to flush */
 760         struct nfs_page         *req;           /* multi ops per nfs_page */
 761         struct page             **pagevec;
 762         unsigned int            npages;         /* Max length of pagevec */
 763         struct nfs_writeargs    args;           /* argument struct */
 764         struct nfs_writeres     res;            /* result struct */
 765 #ifdef CONFIG_NFS_V4
 766         unsigned long           timestamp;      /* For lease renewal */
 767 #endif
 768         struct page             *page_array[NFS_PAGEVEC_SIZE];
 769 };
 770
 771 struct nfs_access_entry;
 772
 773 /*
 774  * RPC procedure vector for NFSv2/NFSv3 demuxing
 775  */
 776 struct nfs_rpc_ops {
 777         u32     version;                /* Protocol version */
 778         struct dentry_operations *dentry_ops;
 779         const struct inode_operations *dir_inode_ops;
 780         const struct inode_operations *file_inode_ops;
 781
 782         int     (*getroot) (struct nfs_server *, struct nfs_fh *,
 783                             struct nfs_fsinfo *);
 784         int     (*lookupfh)(struct nfs_server *, struct nfs_fh *,
 785                             struct qstr *, struct nfs_fh *,
 786                             struct nfs_fattr *);
 787         int     (*getattr) (struct nfs_server *, struct nfs_fh *,
 788                             struct nfs_fattr *);
 789         int     (*setattr) (struct dentry *, struct nfs_fattr *,
 790                             struct iattr *);
 791         int     (*lookup)  (struct inode *, struct qstr *,
 792                             struct nfs_fh *, struct nfs_fattr *);
 793         int     (*access)  (struct inode *, struct nfs_access_entry *);
 794         int     (*readlink)(struct inode *, struct page *, unsigned int,
 795                             unsigned int);
 796         int     (*create)  (struct inode *, struct dentry *,
 797                             struct iattr *, int, struct nameidata *);
 798         int     (*remove)  (struct inode *, struct qstr *);
 799         void    (*unlink_setup)  (struct rpc_message *, struct inode *dir);
 800         int     (*unlink_done) (struct rpc_task *, struct inode *);
 801         int     (*rename)  (struct inode *, struct qstr *,
 802                             struct inode *, struct qstr *);
 803         int     (*link)    (struct inode *, struct inode *, struct qstr *);
 804         int     (*symlink) (struct inode *, struct dentry *, struct page *,
 805                             unsigned int, struct iattr *);
 806         int     (*mkdir)   (struct inode *, struct dentry *, struct iattr *);
 807         int     (*rmdir)   (struct inode *, struct qstr *);
 808         int     (*readdir) (struct dentry *, struct rpc_cred *,
 809                             u64, struct page *, unsigned int, int);
 810         int     (*mknod)   (struct inode *, struct dentry *, struct iattr *,
 811                             dev_t);
 812         int     (*statfs)  (struct nfs_server *, struct nfs_fh *,
 813                             struct nfs_fsstat *);
 814         int     (*fsinfo)  (struct nfs_server *, struct nfs_fh *,
 815                             struct nfs_fsinfo *);
 816         int     (*pathconf) (struct nfs_server *, struct nfs_fh *,
 817                              struct nfs_pathconf *);
 818         int     (*set_capabilities)(struct nfs_server *, struct nfs_fh *);
 819         __be32 *(*decode_dirent)(__be32 *, struct nfs_entry *, int plus);
 820         void    (*read_setup)   (struct nfs_read_data *, struct rpc_message *);
 821         int     (*read_done)  (struct rpc_task *, struct nfs_read_data *);
 822         void    (*write_setup)  (struct nfs_write_data *, struct rpc_message *);
 823         int     (*write_done)  (struct rpc_task *, struct nfs_write_data *);
 824         void    (*commit_setup) (struct nfs_write_data *, struct rpc_message *);
 825         int     (*commit_done) (struct rpc_task *, struct nfs_write_data *);
 826         int     (*file_open)   (struct inode *, struct file *);
 827         int     (*file_release) (struct inode *, struct file *);
 828         int     (*lock)(struct file *, int, struct file_lock *);
 829         void    (*clear_acl_cache)(struct inode *);
 830 };
 831
 832 /*
 833  *      NFS_CALL(getattr, inode, (fattr));
 834  * into
 835  *      NFS_PROTO(inode)->getattr(fattr);
 836  */
 837 #define NFS_CALL(op, inode, args)       NFS_PROTO(inode)->op args
 838
 839 /*
 840  * Function vectors etc. for the NFS client
 841  */
 842 extern const struct nfs_rpc_ops nfs_v2_clientops;
 843 extern const struct nfs_rpc_ops nfs_v3_clientops;
 844 extern const struct nfs_rpc_ops nfs_v4_clientops;
 845 extern struct rpc_version       nfs_version2;
 846 extern struct rpc_version       nfs_version3;
 847 extern struct rpc_version       nfs_version4;
 848
 849 extern struct rpc_version       nfsacl_version3;
 850 extern struct rpc_program       nfsacl_program;
 851
 852 #endif