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         struct nfs_seqid *      seqid;
 144         const struct nfs_server *server;
 145         int                     delegation_type;
 146         nfs4_stateid            delegation;
 147         __u32                   do_recall;
 148         __u64                   maxsize;
 149         __u32                   attrset[NFS4_BITMAP_SIZE];
 150 };
 151
 152 /*
 153  * Arguments to the open_confirm call.
 154  */
 155 struct nfs_open_confirmargs {
 156         const struct nfs_fh *   fh;
 157         nfs4_stateid *          stateid;
 158         struct nfs_seqid *      seqid;
 159 };
 160
 161 struct nfs_open_confirmres {
 162         nfs4_stateid            stateid;
 163         struct nfs_seqid *      seqid;
 164 };
 165
 166 /*
 167  * Arguments to the close call.
 168  */
 169 struct nfs_closeargs {
 170         struct nfs_fh *         fh;
 171         nfs4_stateid *          stateid;
 172         struct nfs_seqid *      seqid;
 173         int                     open_flags;
 174         const u32 *             bitmask;
 175 };
 176
 177 struct nfs_closeres {
 178         nfs4_stateid            stateid;
 179         struct nfs_fattr *      fattr;
 180         struct nfs_seqid *      seqid;
 181         const struct nfs_server *server;
 182 };
 183 /*
 184  *  * Arguments to the lock,lockt, and locku call.
 185  *   */
 186 struct nfs_lowner {
 187         __u64                   clientid;
 188         __u64                   id;
 189 };
 190
 191 struct nfs_lock_args {
 192         struct nfs_fh *         fh;
 193         struct file_lock *      fl;
 194         struct nfs_seqid *      lock_seqid;
 195         nfs4_stateid *          lock_stateid;
 196         struct nfs_seqid *      open_seqid;
 197         nfs4_stateid *          open_stateid;
 198         struct nfs_lowner       lock_owner;
 199         unsigned char           block : 1;
 200         unsigned char           reclaim : 1;
 201         unsigned char           new_lock_owner : 1;
 202 };
 203
 204 struct nfs_lock_res {
 205         nfs4_stateid            stateid;
 206         struct nfs_seqid *      lock_seqid;
 207         struct nfs_seqid *      open_seqid;
 208 };
 209
 210 struct nfs_locku_args {
 211         struct nfs_fh *         fh;
 212         struct file_lock *      fl;
 213         struct nfs_seqid *      seqid;
 214         nfs4_stateid *          stateid;
 215 };
 216
 217 struct nfs_locku_res {
 218         nfs4_stateid            stateid;
 219         struct nfs_seqid *      seqid;
 220 };
 221
 222 struct nfs_lockt_args {
 223         struct nfs_fh *         fh;
 224         struct file_lock *      fl;
 225         struct nfs_lowner       lock_owner;
 226 };
 227
 228 struct nfs_lockt_res {
 229         struct file_lock *      denied; /* LOCK, LOCKT failed */
 230 };
 231
 232 struct nfs4_delegreturnargs {
 233         const struct nfs_fh *fhandle;
 234         const nfs4_stateid *stateid;
 235         const u32 * bitmask;
 236 };
 237
 238 struct nfs4_delegreturnres {
 239         struct nfs_fattr * fattr;
 240         const struct nfs_server *server;
 241 };
 242
 243 /*
 244  * Arguments to the read call.
 245  */
 246 struct nfs_readargs {
 247         struct nfs_fh *         fh;
 248         struct nfs_open_context *context;
 249         __u64                   offset;
 250         __u32                   count;
 251         unsigned int            pgbase;
 252         struct page **          pages;
 253 };
 254
 255 struct nfs_readres {
 256         struct nfs_fattr *      fattr;
 257         __u32                   count;
 258         int                     eof;
 259 };
 260
 261 /*
 262  * Arguments to the write call.
 263  */
 264 struct nfs_writeargs {
 265         struct nfs_fh *         fh;
 266         struct nfs_open_context *context;
 267         __u64                   offset;
 268         __u32                   count;
 269         enum nfs3_stable_how    stable;
 270         unsigned int            pgbase;
 271         struct page **          pages;
 272         const u32 *             bitmask;
 273 };
 274
 275 struct nfs_writeverf {
 276         enum nfs3_stable_how    committed;
 277         __be32                  verifier[2];
 278 };
 279
 280 struct nfs_writeres {
 281         struct nfs_fattr *      fattr;
 282         struct nfs_writeverf *  verf;
 283         __u32                   count;
 284         const struct nfs_server *server;
 285 };
 286
 287 /*
 288  * Common arguments to the unlink call
 289  */
 290 struct nfs_removeargs {
 291         const struct nfs_fh     *fh;
 292         struct qstr             name;
 293         const u32 *             bitmask;
 294 };
 295
 296 struct nfs_removeres {
 297         const struct nfs_server *server;
 298         struct nfs4_change_info cinfo;
 299         struct nfs_fattr        dir_attr;
 300 };
 301
 302 /*
 303  * Argument struct for decode_entry function
 304  */
 305 struct nfs_entry {
 306         __u64                   ino;
 307         __u64                   cookie,
 308                                 prev_cookie;
 309         const char *            name;
 310         unsigned int            len;
 311         int                     eof;
 312         struct nfs_fh *         fh;
 313         struct nfs_fattr *      fattr;
 314 };
 315
 316 /*
 317  * The following types are for NFSv2 only.
 318  */
 319 struct nfs_sattrargs {
 320         struct nfs_fh *         fh;
 321         struct iattr *          sattr;
 322 };
 323
 324 struct nfs_diropargs {
 325         struct nfs_fh *         fh;
 326         const char *            name;
 327         unsigned int            len;
 328 };
 329
 330 struct nfs_createargs {
 331         struct nfs_fh *         fh;
 332         const char *            name;
 333         unsigned int            len;
 334         struct iattr *          sattr;
 335 };
 336
 337 struct nfs_renameargs {
 338         struct nfs_fh *         fromfh;
 339         const char *            fromname;
 340         unsigned int            fromlen;
 341         struct nfs_fh *         tofh;
 342         const char *            toname;
 343         unsigned int            tolen;
 344 };
 345
 346 struct nfs_setattrargs {
 347         struct nfs_fh *                 fh;
 348         nfs4_stateid                    stateid;
 349         struct iattr *                  iap;
 350         const struct nfs_server *       server; /* Needed for name mapping */
 351         const u32 *                     bitmask;
 352 };
 353
 354 struct nfs_setaclargs {
 355         struct nfs_fh *                 fh;
 356         size_t                          acl_len;
 357         unsigned int                    acl_pgbase;
 358         struct page **                  acl_pages;
 359 };
 360
 361 struct nfs_getaclargs {
 362         struct nfs_fh *                 fh;
 363         size_t                          acl_len;
 364         unsigned int                    acl_pgbase;
 365         struct page **                  acl_pages;
 366 };
 367
 368 struct nfs_setattrres {
 369         struct nfs_fattr *              fattr;
 370         const struct nfs_server *       server;
 371 };
 372
 373 struct nfs_linkargs {
 374         struct nfs_fh *         fromfh;
 375         struct nfs_fh *         tofh;
 376         const char *            toname;
 377         unsigned int            tolen;
 378 };
 379
 380 struct nfs_symlinkargs {
 381         struct nfs_fh *         fromfh;
 382         const char *            fromname;
 383         unsigned int            fromlen;
 384         struct page **          pages;
 385         unsigned int            pathlen;
 386         struct iattr *          sattr;
 387 };
 388
 389 struct nfs_readdirargs {
 390         struct nfs_fh *         fh;
 391         __u32                   cookie;
 392         unsigned int            count;
 393         struct page **          pages;
 394 };
 395
 396 struct nfs3_getaclargs {
 397         struct nfs_fh *         fh;
 398         int                     mask;
 399         struct page **          pages;
 400 };
 401
 402 struct nfs3_setaclargs {
 403         struct inode *          inode;
 404         int                     mask;
 405         struct posix_acl *      acl_access;
 406         struct posix_acl *      acl_default;
 407         struct page **          pages;
 408 };
 409
 410 struct nfs_diropok {
 411         struct nfs_fh *         fh;
 412         struct nfs_fattr *      fattr;
 413 };
 414
 415 struct nfs_readlinkargs {
 416         struct nfs_fh *         fh;
 417         unsigned int            pgbase;
 418         unsigned int            pglen;
 419         struct page **          pages;
 420 };
 421
 422 struct nfs3_sattrargs {
 423         struct nfs_fh *         fh;
 424         struct iattr *          sattr;
 425         unsigned int            guard;
 426         struct timespec         guardtime;
 427 };
 428
 429 struct nfs3_diropargs {
 430         struct nfs_fh *         fh;
 431         const char *            name;
 432         unsigned int            len;
 433 };
 434
 435 struct nfs3_accessargs {
 436         struct nfs_fh *         fh;
 437         __u32                   access;
 438 };
 439
 440 struct nfs3_createargs {
 441         struct nfs_fh *         fh;
 442         const char *            name;
 443         unsigned int            len;
 444         struct iattr *          sattr;
 445         enum nfs3_createmode    createmode;
 446         __be32                  verifier[2];
 447 };
 448
 449 struct nfs3_mkdirargs {
 450         struct nfs_fh *         fh;
 451         const char *            name;
 452         unsigned int            len;
 453         struct iattr *          sattr;
 454 };
 455
 456 struct nfs3_symlinkargs {
 457         struct nfs_fh *         fromfh;
 458         const char *            fromname;
 459         unsigned int            fromlen;
 460         struct page **          pages;
 461         unsigned int            pathlen;
 462         struct iattr *          sattr;
 463 };
 464
 465 struct nfs3_mknodargs {
 466         struct nfs_fh *         fh;
 467         const char *            name;
 468         unsigned int            len;
 469         enum nfs3_ftype         type;
 470         struct iattr *          sattr;
 471         dev_t                   rdev;
 472 };
 473
 474 struct nfs3_renameargs {
 475         struct nfs_fh *         fromfh;
 476         const char *            fromname;
 477         unsigned int            fromlen;
 478         struct nfs_fh *         tofh;
 479         const char *            toname;
 480         unsigned int            tolen;
 481 };
 482
 483 struct nfs3_linkargs {
 484         struct nfs_fh *         fromfh;
 485         struct nfs_fh *         tofh;
 486         const char *            toname;
 487         unsigned int            tolen;
 488 };
 489
 490 struct nfs3_readdirargs {
 491         struct nfs_fh *         fh;
 492         __u64                   cookie;
 493         __be32                  verf[2];
 494         int                     plus;
 495         unsigned int            count;
 496         struct page **          pages;
 497 };
 498
 499 struct nfs3_diropres {
 500         struct nfs_fattr *      dir_attr;
 501         struct nfs_fh *         fh;
 502         struct nfs_fattr *      fattr;
 503 };
 504
 505 struct nfs3_accessres {
 506         struct nfs_fattr *      fattr;
 507         __u32                   access;
 508 };
 509
 510 struct nfs3_readlinkargs {
 511         struct nfs_fh *         fh;
 512         unsigned int            pgbase;
 513         unsigned int            pglen;
 514         struct page **          pages;
 515 };
 516
 517 struct nfs3_renameres {
 518         struct nfs_fattr *      fromattr;
 519         struct nfs_fattr *      toattr;
 520 };
 521
 522 struct nfs3_linkres {
 523         struct nfs_fattr *      dir_attr;
 524         struct nfs_fattr *      fattr;
 525 };
 526
 527 struct nfs3_readdirres {
 528         struct nfs_fattr *      dir_attr;
 529         __be32 *                verf;
 530         int                     plus;
 531 };
 532
 533 struct nfs3_getaclres {
 534         struct nfs_fattr *      fattr;
 535         int                     mask;
 536         unsigned int            acl_access_count;
 537         unsigned int            acl_default_count;
 538         struct posix_acl *      acl_access;
 539         struct posix_acl *      acl_default;
 540 };
 541
 542 #ifdef CONFIG_NFS_V4
 543
 544 typedef u64 clientid4;
 545
 546 struct nfs4_accessargs {
 547         const struct nfs_fh *           fh;
 548         const u32 *                     bitmask;
 549         u32                             access;
 550 };
 551
 552 struct nfs4_accessres {
 553         const struct nfs_server *       server;
 554         struct nfs_fattr *              fattr;
 555         u32                             supported;
 556         u32                             access;
 557 };
 558
 559 struct nfs4_create_arg {
 560         u32                             ftype;
 561         union {
 562                 struct {
 563                         struct page **  pages;
 564                         unsigned int    len;
 565                 } symlink;   /* NF4LNK */
 566                 struct {
 567                         u32             specdata1;
 568                         u32             specdata2;
 569                 } device;    /* NF4BLK, NF4CHR */
 570         } u;
 571         const struct qstr *             name;
 572         const struct nfs_server *       server;
 573         const struct iattr *            attrs;
 574         const struct nfs_fh *           dir_fh;
 575         const u32 *                     bitmask;
 576 };
 577
 578 struct nfs4_create_res {
 579         const struct nfs_server *       server;
 580         struct nfs_fh *                 fh;
 581         struct nfs_fattr *              fattr;
 582         struct nfs4_change_info         dir_cinfo;
 583         struct nfs_fattr *              dir_fattr;
 584 };
 585
 586 struct nfs4_fsinfo_arg {
 587         const struct nfs_fh *           fh;
 588         const u32 *                     bitmask;
 589 };
 590
 591 struct nfs4_getattr_arg {
 592         const struct nfs_fh *           fh;
 593         const u32 *                     bitmask;
 594 };
 595
 596 struct nfs4_getattr_res {
 597         const struct nfs_server *       server;
 598         struct nfs_fattr *              fattr;
 599 };
 600
 601 struct nfs4_link_arg {
 602         const struct nfs_fh *           fh;
 603         const struct nfs_fh *           dir_fh;
 604         const struct qstr *             name;
 605         const u32 *                     bitmask;
 606 };
 607
 608 struct nfs4_link_res {
 609         const struct nfs_server *       server;
 610         struct nfs_fattr *              fattr;
 611         struct nfs4_change_info         cinfo;
 612         struct nfs_fattr *              dir_attr;
 613 };
 614
 615
 616 struct nfs4_lookup_arg {
 617         const struct nfs_fh *           dir_fh;
 618         const struct qstr *             name;
 619         const u32 *                     bitmask;
 620 };
 621
 622 struct nfs4_lookup_res {
 623         const struct nfs_server *       server;
 624         struct nfs_fattr *              fattr;
 625         struct nfs_fh *                 fh;
 626 };
 627
 628 struct nfs4_lookup_root_arg {
 629         const u32 *                     bitmask;
 630 };
 631
 632 struct nfs4_pathconf_arg {
 633         const struct nfs_fh *           fh;
 634         const u32 *                     bitmask;
 635 };
 636
 637 struct nfs4_readdir_arg {
 638         const struct nfs_fh *           fh;
 639         u64                             cookie;
 640         nfs4_verifier                   verifier;
 641         u32                             count;
 642         struct page **                  pages;  /* zero-copy data */
 643         unsigned int                    pgbase; /* zero-copy data */
 644         const u32 *                     bitmask;
 645 };
 646
 647 struct nfs4_readdir_res {
 648         nfs4_verifier                   verifier;
 649         unsigned int                    pgbase;
 650 };
 651
 652 struct nfs4_readlink {
 653         const struct nfs_fh *           fh;
 654         unsigned int                    pgbase;
 655         unsigned int                    pglen;   /* zero-copy data */
 656         struct page **                  pages;   /* zero-copy data */
 657 };
 658
 659 struct nfs4_rename_arg {
 660         const struct nfs_fh *           old_dir;
 661         const struct nfs_fh *           new_dir;
 662         const struct qstr *             old_name;
 663         const struct qstr *             new_name;
 664         const u32 *                     bitmask;
 665 };
 666
 667 struct nfs4_rename_res {
 668         const struct nfs_server *       server;
 669         struct nfs4_change_info         old_cinfo;
 670         struct nfs_fattr *              old_fattr;
 671         struct nfs4_change_info         new_cinfo;
 672         struct nfs_fattr *              new_fattr;
 673 };
 674
 675 #define NFS4_SETCLIENTID_NAMELEN        (56)
 676 struct nfs4_setclientid {
 677         const nfs4_verifier *           sc_verifier;
 678         unsigned int                    sc_name_len;
 679         char                            sc_name[NFS4_SETCLIENTID_NAMELEN];
 680         u32                             sc_prog;
 681         unsigned int                    sc_netid_len;
 682         char                            sc_netid[RPCBIND_MAXNETIDLEN];
 683         unsigned int                    sc_uaddr_len;
 684         char                            sc_uaddr[RPCBIND_MAXUADDRLEN];
 685         u32                             sc_cb_ident;
 686 };
 687
 688 struct nfs4_statfs_arg {
 689         const struct nfs_fh *           fh;
 690         const u32 *                     bitmask;
 691 };
 692
 693 struct nfs4_server_caps_res {
 694         u32                             attr_bitmask[2];
 695         u32                             acl_bitmask;
 696         u32                             has_links;
 697         u32                             has_symlinks;
 698 };
 699
 700 struct nfs4_string {
 701         unsigned int len;
 702         char *data;
 703 };
 704
 705 #define NFS4_PATHNAME_MAXCOMPONENTS 512
 706 struct nfs4_pathname {
 707         unsigned int ncomponents;
 708         struct nfs4_string components[NFS4_PATHNAME_MAXCOMPONENTS];
 709 };
 710
 711 #define NFS4_FS_LOCATION_MAXSERVERS 10
 712 struct nfs4_fs_location {
 713         unsigned int nservers;
 714         struct nfs4_string servers[NFS4_FS_LOCATION_MAXSERVERS];
 715         struct nfs4_pathname rootpath;
 716 };
 717
 718 #define NFS4_FS_LOCATIONS_MAXENTRIES 10
 719 struct nfs4_fs_locations {
 720         struct nfs_fattr fattr;
 721         const struct nfs_server *server;
 722         struct nfs4_pathname fs_path;
 723         int nlocations;
 724         struct nfs4_fs_location locations[NFS4_FS_LOCATIONS_MAXENTRIES];
 725 };
 726
 727 struct nfs4_fs_locations_arg {
 728         const struct nfs_fh *dir_fh;
 729         const struct qstr *name;
 730         struct page *page;
 731         const u32 *bitmask;
 732 };
 733
 734 #endif /* CONFIG_NFS_V4 */
 735
 736 struct nfs_page;
 737
 738 #define NFS_PAGEVEC_SIZE        (8U)
 739
 740 struct nfs_read_data {
 741         int                     flags;
 742         struct rpc_task         task;
 743         struct inode            *inode;
 744         struct rpc_cred         *cred;
 745         struct nfs_fattr        fattr;  /* fattr storage */
 746         struct list_head        pages;  /* Coalesced read requests */
 747         struct nfs_page         *req;   /* multi ops per nfs_page */
 748         struct page             **pagevec;
 749         unsigned int            npages; /* Max length of pagevec */
 750         struct nfs_readargs args;
 751         struct nfs_readres  res;
 752 #ifdef CONFIG_NFS_V4
 753         unsigned long           timestamp;      /* For lease renewal */
 754 #endif
 755         struct page             *page_array[NFS_PAGEVEC_SIZE];
 756 };
 757
 758 struct nfs_write_data {
 759         int                     flags;
 760         struct rpc_task         task;
 761         struct inode            *inode;
 762         struct rpc_cred         *cred;
 763         struct nfs_fattr        fattr;
 764         struct nfs_writeverf    verf;
 765         struct list_head        pages;          /* Coalesced requests we wish to flush */
 766         struct nfs_page         *req;           /* multi ops per nfs_page */
 767         struct page             **pagevec;
 768         unsigned int            npages;         /* Max length of pagevec */
 769         struct nfs_writeargs    args;           /* argument struct */
 770         struct nfs_writeres     res;            /* result struct */
 771 #ifdef CONFIG_NFS_V4
 772         unsigned long           timestamp;      /* For lease renewal */
 773 #endif
 774         struct page             *page_array[NFS_PAGEVEC_SIZE];
 775 };
 776
 777 struct nfs_access_entry;
 778
 779 /*
 780  * RPC procedure vector for NFSv2/NFSv3 demuxing
 781  */
 782 struct nfs_rpc_ops {
 783         u32     version;                /* Protocol version */
 784         struct dentry_operations *dentry_ops;
 785         const struct inode_operations *dir_inode_ops;
 786         const struct inode_operations *file_inode_ops;
 787
 788         int     (*getroot) (struct nfs_server *, struct nfs_fh *,
 789                             struct nfs_fsinfo *);
 790         int     (*lookupfh)(struct nfs_server *, struct nfs_fh *,
 791                             struct qstr *, struct nfs_fh *,
 792                             struct nfs_fattr *);
 793         int     (*getattr) (struct nfs_server *, struct nfs_fh *,
 794                             struct nfs_fattr *);
 795         int     (*setattr) (struct dentry *, struct nfs_fattr *,
 796                             struct iattr *);
 797         int     (*lookup)  (struct inode *, struct qstr *,
 798                             struct nfs_fh *, struct nfs_fattr *);
 799         int     (*access)  (struct inode *, struct nfs_access_entry *);
 800         int     (*readlink)(struct inode *, struct page *, unsigned int,
 801                             unsigned int);
 802         int     (*create)  (struct inode *, struct dentry *,
 803                             struct iattr *, int, struct nameidata *);
 804         int     (*remove)  (struct inode *, struct qstr *);
 805         void    (*unlink_setup)  (struct rpc_message *, struct inode *dir);
 806         int     (*unlink_done) (struct rpc_task *, struct inode *);
 807         int     (*rename)  (struct inode *, struct qstr *,
 808                             struct inode *, struct qstr *);
 809         int     (*link)    (struct inode *, struct inode *, struct qstr *);
 810         int     (*symlink) (struct inode *, struct dentry *, struct page *,
 811                             unsigned int, struct iattr *);
 812         int     (*mkdir)   (struct inode *, struct dentry *, struct iattr *);
 813         int     (*rmdir)   (struct inode *, struct qstr *);
 814         int     (*readdir) (struct dentry *, struct rpc_cred *,
 815                             u64, struct page *, unsigned int, int);
 816         int     (*mknod)   (struct inode *, struct dentry *, struct iattr *,
 817                             dev_t);
 818         int     (*statfs)  (struct nfs_server *, struct nfs_fh *,
 819                             struct nfs_fsstat *);
 820         int     (*fsinfo)  (struct nfs_server *, struct nfs_fh *,
 821                             struct nfs_fsinfo *);
 822         int     (*pathconf) (struct nfs_server *, struct nfs_fh *,
 823                              struct nfs_pathconf *);
 824         int     (*set_capabilities)(struct nfs_server *, struct nfs_fh *);
 825         __be32 *(*decode_dirent)(__be32 *, struct nfs_entry *, int plus);
 826         void    (*read_setup)   (struct nfs_read_data *, struct rpc_message *);
 827         int     (*read_done)  (struct rpc_task *, struct nfs_read_data *);
 828         void    (*write_setup)  (struct nfs_write_data *, struct rpc_message *);
 829         int     (*write_done)  (struct rpc_task *, struct nfs_write_data *);
 830         void    (*commit_setup) (struct nfs_write_data *, struct rpc_message *);
 831         int     (*commit_done) (struct rpc_task *, struct nfs_write_data *);
 832         int     (*lock)(struct file *, int, struct file_lock *);
 833         int     (*lock_check_bounds)(const struct file_lock *);
 834         void    (*clear_acl_cache)(struct inode *);
 835 };
 836
 837 /*
 838  *      NFS_CALL(getattr, inode, (fattr));
 839  * into
 840  *      NFS_PROTO(inode)->getattr(fattr);
 841  */
 842 #define NFS_CALL(op, inode, args)       NFS_PROTO(inode)->op args
 843
 844 /*
 845  * Function vectors etc. for the NFS client
 846  */
 847 extern const struct nfs_rpc_ops nfs_v2_clientops;
 848 extern const struct nfs_rpc_ops nfs_v3_clientops;
 849 extern const struct nfs_rpc_ops nfs_v4_clientops;
 850 extern struct rpc_version       nfs_version2;
 851 extern struct rpc_version       nfs_version3;
 852 extern struct rpc_version       nfs_version4;
 853
 854 extern struct rpc_version       nfsacl_version3;
 855 extern struct rpc_program       nfsacl_program;
 856
 857 #endif