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 int            valid;          /* which fields are valid */
  31         umode_t                 mode;
  32         __u32                   nlink;
  33         __u32                   uid;
  34         __u32                   gid;
  35         dev_t                   rdev;
  36         __u64                   size;
  37         union {
  38                 struct {
  39                         __u32   blocksize;
  40                         __u32   blocks;
  41                 } nfs2;
  42                 struct {
  43                         __u64   used;
  44                 } nfs3;
  45         } du;
  46         struct nfs_fsid         fsid;
  47         __u64                   fileid;
  48         struct timespec         atime;
  49         struct timespec         mtime;
  50         struct timespec         ctime;
  51         __u64                   change_attr;    /* NFSv4 change attribute */
  52         __u64                   pre_change_attr;/* pre-op NFSv4 change attribute */
  53         __u64                   pre_size;       /* pre_op_attr.size       */
  54         struct timespec         pre_mtime;      /* pre_op_attr.mtime      */
  55         struct timespec         pre_ctime;      /* pre_op_attr.ctime      */
  56         unsigned long           time_start;
  57         unsigned long           gencount;
  58 };
  59
  60 #define NFS_ATTR_FATTR_TYPE             (1U << 0)
  61 #define NFS_ATTR_FATTR_MODE             (1U << 1)
  62 #define NFS_ATTR_FATTR_NLINK            (1U << 2)
  63 #define NFS_ATTR_FATTR_OWNER            (1U << 3)
  64 #define NFS_ATTR_FATTR_GROUP            (1U << 4)
  65 #define NFS_ATTR_FATTR_RDEV             (1U << 5)
  66 #define NFS_ATTR_FATTR_SIZE             (1U << 6)
  67 #define NFS_ATTR_FATTR_PRESIZE          (1U << 7)
  68 #define NFS_ATTR_FATTR_BLOCKS_USED      (1U << 8)
  69 #define NFS_ATTR_FATTR_SPACE_USED       (1U << 9)
  70 #define NFS_ATTR_FATTR_FSID             (1U << 10)
  71 #define NFS_ATTR_FATTR_FILEID           (1U << 11)
  72 #define NFS_ATTR_FATTR_ATIME            (1U << 12)
  73 #define NFS_ATTR_FATTR_MTIME            (1U << 13)
  74 #define NFS_ATTR_FATTR_CTIME            (1U << 14)
  75 #define NFS_ATTR_FATTR_PREMTIME         (1U << 15)
  76 #define NFS_ATTR_FATTR_PRECTIME         (1U << 16)
  77 #define NFS_ATTR_FATTR_CHANGE           (1U << 17)
  78 #define NFS_ATTR_FATTR_PRECHANGE        (1U << 18)
  79 #define NFS_ATTR_FATTR_V4_REFERRAL      (1U << 19)      /* NFSv4 referral */
  80
  81 #define NFS_ATTR_FATTR (NFS_ATTR_FATTR_TYPE \
  82                 | NFS_ATTR_FATTR_MODE \
  83                 | NFS_ATTR_FATTR_NLINK \
  84                 | NFS_ATTR_FATTR_OWNER \
  85                 | NFS_ATTR_FATTR_GROUP \
  86                 | NFS_ATTR_FATTR_RDEV \
  87                 | NFS_ATTR_FATTR_SIZE \
  88                 | NFS_ATTR_FATTR_FSID \
  89                 | NFS_ATTR_FATTR_FILEID \
  90                 | NFS_ATTR_FATTR_ATIME \
  91                 | NFS_ATTR_FATTR_MTIME \
  92                 | NFS_ATTR_FATTR_CTIME)
  93 #define NFS_ATTR_FATTR_V2 (NFS_ATTR_FATTR \
  94                 | NFS_ATTR_FATTR_BLOCKS_USED)
  95 #define NFS_ATTR_FATTR_V3 (NFS_ATTR_FATTR \
  96                 | NFS_ATTR_FATTR_SPACE_USED)
  97 #define NFS_ATTR_FATTR_V4 (NFS_ATTR_FATTR \
  98                 | NFS_ATTR_FATTR_SPACE_USED \
  99                 | NFS_ATTR_FATTR_CHANGE)
 100
 101 /*
 102  * Info on the file system
 103  */
 104 struct nfs_fsinfo {
 105         struct nfs_fattr        *fattr; /* Post-op attributes */
 106         __u32                   rtmax;  /* max.  read transfer size */
 107         __u32                   rtpref; /* pref. read transfer size */
 108         __u32                   rtmult; /* reads should be multiple of this */
 109         __u32                   wtmax;  /* max.  write transfer size */
 110         __u32                   wtpref; /* pref. write transfer size */
 111         __u32                   wtmult; /* writes should be multiple of this */
 112         __u32                   dtpref; /* pref. readdir transfer size */
 113         __u64                   maxfilesize;
 114         __u32                   lease_time; /* in seconds */
 115 };
 116
 117 struct nfs_fsstat {
 118         struct nfs_fattr        *fattr; /* Post-op attributes */
 119         __u64                   tbytes; /* total size in bytes */
 120         __u64                   fbytes; /* # of free bytes */
 121         __u64                   abytes; /* # of bytes available to user */
 122         __u64                   tfiles; /* # of files */
 123         __u64                   ffiles; /* # of free files */
 124         __u64                   afiles; /* # of files available to user */
 125 };
 126
 127 struct nfs2_fsstat {
 128         __u32                   tsize;  /* Server transfer size */
 129         __u32                   bsize;  /* Filesystem block size */
 130         __u32                   blocks; /* No. of "bsize" blocks on filesystem */
 131         __u32                   bfree;  /* No. of free "bsize" blocks */
 132         __u32                   bavail; /* No. of available "bsize" blocks */
 133 };
 134
 135 struct nfs_pathconf {
 136         struct nfs_fattr        *fattr; /* Post-op attributes */
 137         __u32                   max_link; /* max # of hard links */
 138         __u32                   max_namelen; /* max name length */
 139 };
 140
 141 struct nfs4_change_info {
 142         u32                     atomic;
 143         u64                     before;
 144         u64                     after;
 145 };
 146
 147 struct nfs_seqid;
 148 /*
 149  * Arguments to the open call.
 150  */
 151 struct nfs_openargs {
 152         const struct nfs_fh *   fh;
 153         struct nfs_seqid *      seqid;
 154         int                     open_flags;
 155         fmode_t                 fmode;
 156         __u64                   clientid;
 157         __u64                   id;
 158         union {
 159                 struct iattr *  attrs;    /* UNCHECKED, GUARDED */
 160                 nfs4_verifier   verifier; /* EXCLUSIVE */
 161                 nfs4_stateid    delegation;             /* CLAIM_DELEGATE_CUR */
 162                 fmode_t         delegation_type;        /* CLAIM_PREVIOUS */
 163         } u;
 164         const struct qstr *     name;
 165         const struct nfs_server *server;         /* Needed for ID mapping */
 166         const u32 *             bitmask;
 167         __u32                   claim;
 168 };
 169
 170 struct nfs_openres {
 171         nfs4_stateid            stateid;
 172         struct nfs_fh           fh;
 173         struct nfs4_change_info cinfo;
 174         __u32                   rflags;
 175         struct nfs_fattr *      f_attr;
 176         struct nfs_fattr *      dir_attr;
 177         struct nfs_seqid *      seqid;
 178         const struct nfs_server *server;
 179         fmode_t                 delegation_type;
 180         nfs4_stateid            delegation;
 181         __u32                   do_recall;
 182         __u64                   maxsize;
 183         __u32                   attrset[NFS4_BITMAP_SIZE];
 184 };
 185
 186 /*
 187  * Arguments to the open_confirm call.
 188  */
 189 struct nfs_open_confirmargs {
 190         const struct nfs_fh *   fh;
 191         nfs4_stateid *          stateid;
 192         struct nfs_seqid *      seqid;
 193 };
 194
 195 struct nfs_open_confirmres {
 196         nfs4_stateid            stateid;
 197         struct nfs_seqid *      seqid;
 198 };
 199
 200 /*
 201  * Arguments to the close call.
 202  */
 203 struct nfs_closeargs {
 204         struct nfs_fh *         fh;
 205         nfs4_stateid *          stateid;
 206         struct nfs_seqid *      seqid;
 207         fmode_t                 fmode;
 208         const u32 *             bitmask;
 209 };
 210
 211 struct nfs_closeres {
 212         nfs4_stateid            stateid;
 213         struct nfs_fattr *      fattr;
 214         struct nfs_seqid *      seqid;
 215         const struct nfs_server *server;
 216 };
 217 /*
 218  *  * Arguments to the lock,lockt, and locku call.
 219  *   */
 220 struct nfs_lowner {
 221         __u64                   clientid;
 222         __u64                   id;
 223 };
 224
 225 struct nfs_lock_args {
 226         struct nfs_fh *         fh;
 227         struct file_lock *      fl;
 228         struct nfs_seqid *      lock_seqid;
 229         nfs4_stateid *          lock_stateid;
 230         struct nfs_seqid *      open_seqid;
 231         nfs4_stateid *          open_stateid;
 232         struct nfs_lowner       lock_owner;
 233         unsigned char           block : 1;
 234         unsigned char           reclaim : 1;
 235         unsigned char           new_lock_owner : 1;
 236 };
 237
 238 struct nfs_lock_res {
 239         nfs4_stateid            stateid;
 240         struct nfs_seqid *      lock_seqid;
 241         struct nfs_seqid *      open_seqid;
 242 };
 243
 244 struct nfs_locku_args {
 245         struct nfs_fh *         fh;
 246         struct file_lock *      fl;
 247         struct nfs_seqid *      seqid;
 248         nfs4_stateid *          stateid;
 249 };
 250
 251 struct nfs_locku_res {
 252         nfs4_stateid            stateid;
 253         struct nfs_seqid *      seqid;
 254 };
 255
 256 struct nfs_lockt_args {
 257         struct nfs_fh *         fh;
 258         struct file_lock *      fl;
 259         struct nfs_lowner       lock_owner;
 260 };
 261
 262 struct nfs_lockt_res {
 263         struct file_lock *      denied; /* LOCK, LOCKT failed */
 264 };
 265
 266 struct nfs4_delegreturnargs {
 267         const struct nfs_fh *fhandle;
 268         const nfs4_stateid *stateid;
 269         const u32 * bitmask;
 270 };
 271
 272 struct nfs4_delegreturnres {
 273         struct nfs_fattr * fattr;
 274         const struct nfs_server *server;
 275 };
 276
 277 /*
 278  * Arguments to the read call.
 279  */
 280 struct nfs_readargs {
 281         struct nfs_fh *         fh;
 282         struct nfs_open_context *context;
 283         __u64                   offset;
 284         __u32                   count;
 285         unsigned int            pgbase;
 286         struct page **          pages;
 287 };
 288
 289 struct nfs_readres {
 290         struct nfs_fattr *      fattr;
 291         __u32                   count;
 292         int                     eof;
 293 };
 294
 295 /*
 296  * Arguments to the write call.
 297  */
 298 struct nfs_writeargs {
 299         struct nfs_fh *         fh;
 300         struct nfs_open_context *context;
 301         __u64                   offset;
 302         __u32                   count;
 303         enum nfs3_stable_how    stable;
 304         unsigned int            pgbase;
 305         struct page **          pages;
 306         const u32 *             bitmask;
 307 };
 308
 309 struct nfs_writeverf {
 310         enum nfs3_stable_how    committed;
 311         __be32                  verifier[2];
 312 };
 313
 314 struct nfs_writeres {
 315         struct nfs_fattr *      fattr;
 316         struct nfs_writeverf *  verf;
 317         __u32                   count;
 318         const struct nfs_server *server;
 319 };
 320
 321 /*
 322  * Common arguments to the unlink call
 323  */
 324 struct nfs_removeargs {
 325         const struct nfs_fh     *fh;
 326         struct qstr             name;
 327         const u32 *             bitmask;
 328 };
 329
 330 struct nfs_removeres {
 331         const struct nfs_server *server;
 332         struct nfs4_change_info cinfo;
 333         struct nfs_fattr        dir_attr;
 334 };
 335
 336 /*
 337  * Argument struct for decode_entry function
 338  */
 339 struct nfs_entry {
 340         __u64                   ino;
 341         __u64                   cookie,
 342                                 prev_cookie;
 343         const char *            name;
 344         unsigned int            len;
 345         int                     eof;
 346         struct nfs_fh *         fh;
 347         struct nfs_fattr *      fattr;
 348 };
 349
 350 /*
 351  * The following types are for NFSv2 only.
 352  */
 353 struct nfs_sattrargs {
 354         struct nfs_fh *         fh;
 355         struct iattr *          sattr;
 356 };
 357
 358 struct nfs_diropargs {
 359         struct nfs_fh *         fh;
 360         const char *            name;
 361         unsigned int            len;
 362 };
 363
 364 struct nfs_createargs {
 365         struct nfs_fh *         fh;
 366         const char *            name;
 367         unsigned int            len;
 368         struct iattr *          sattr;
 369 };
 370
 371 struct nfs_renameargs {
 372         struct nfs_fh *         fromfh;
 373         const char *            fromname;
 374         unsigned int            fromlen;
 375         struct nfs_fh *         tofh;
 376         const char *            toname;
 377         unsigned int            tolen;
 378 };
 379
 380 struct nfs_setattrargs {
 381         struct nfs_fh *                 fh;
 382         nfs4_stateid                    stateid;
 383         struct iattr *                  iap;
 384         const struct nfs_server *       server; /* Needed for name mapping */
 385         const u32 *                     bitmask;
 386 };
 387
 388 struct nfs_setaclargs {
 389         struct nfs_fh *                 fh;
 390         size_t                          acl_len;
 391         unsigned int                    acl_pgbase;
 392         struct page **                  acl_pages;
 393 };
 394
 395 struct nfs_getaclargs {
 396         struct nfs_fh *                 fh;
 397         size_t                          acl_len;
 398         unsigned int                    acl_pgbase;
 399         struct page **                  acl_pages;
 400 };
 401
 402 struct nfs_setattrres {
 403         struct nfs_fattr *              fattr;
 404         const struct nfs_server *       server;
 405 };
 406
 407 struct nfs_linkargs {
 408         struct nfs_fh *         fromfh;
 409         struct nfs_fh *         tofh;
 410         const char *            toname;
 411         unsigned int            tolen;
 412 };
 413
 414 struct nfs_symlinkargs {
 415         struct nfs_fh *         fromfh;
 416         const char *            fromname;
 417         unsigned int            fromlen;
 418         struct page **          pages;
 419         unsigned int            pathlen;
 420         struct iattr *          sattr;
 421 };
 422
 423 struct nfs_readdirargs {
 424         struct nfs_fh *         fh;
 425         __u32                   cookie;
 426         unsigned int            count;
 427         struct page **          pages;
 428 };
 429
 430 struct nfs3_getaclargs {
 431         struct nfs_fh *         fh;
 432         int                     mask;
 433         struct page **          pages;
 434 };
 435
 436 struct nfs3_setaclargs {
 437         struct inode *          inode;
 438         int                     mask;
 439         struct posix_acl *      acl_access;
 440         struct posix_acl *      acl_default;
 441         size_t                  len;
 442         unsigned int            npages;
 443         struct page **          pages;
 444 };
 445
 446 struct nfs_diropok {
 447         struct nfs_fh *         fh;
 448         struct nfs_fattr *      fattr;
 449 };
 450
 451 struct nfs_readlinkargs {
 452         struct nfs_fh *         fh;
 453         unsigned int            pgbase;
 454         unsigned int            pglen;
 455         struct page **          pages;
 456 };
 457
 458 struct nfs3_sattrargs {
 459         struct nfs_fh *         fh;
 460         struct iattr *          sattr;
 461         unsigned int            guard;
 462         struct timespec         guardtime;
 463 };
 464
 465 struct nfs3_diropargs {
 466         struct nfs_fh *         fh;
 467         const char *            name;
 468         unsigned int            len;
 469 };
 470
 471 struct nfs3_accessargs {
 472         struct nfs_fh *         fh;
 473         __u32                   access;
 474 };
 475
 476 struct nfs3_createargs {
 477         struct nfs_fh *         fh;
 478         const char *            name;
 479         unsigned int            len;
 480         struct iattr *          sattr;
 481         enum nfs3_createmode    createmode;
 482         __be32                  verifier[2];
 483 };
 484
 485 struct nfs3_mkdirargs {
 486         struct nfs_fh *         fh;
 487         const char *            name;
 488         unsigned int            len;
 489         struct iattr *          sattr;
 490 };
 491
 492 struct nfs3_symlinkargs {
 493         struct nfs_fh *         fromfh;
 494         const char *            fromname;
 495         unsigned int            fromlen;
 496         struct page **          pages;
 497         unsigned int            pathlen;
 498         struct iattr *          sattr;
 499 };
 500
 501 struct nfs3_mknodargs {
 502         struct nfs_fh *         fh;
 503         const char *            name;
 504         unsigned int            len;
 505         enum nfs3_ftype         type;
 506         struct iattr *          sattr;
 507         dev_t                   rdev;
 508 };
 509
 510 struct nfs3_renameargs {
 511         struct nfs_fh *         fromfh;
 512         const char *            fromname;
 513         unsigned int            fromlen;
 514         struct nfs_fh *         tofh;
 515         const char *            toname;
 516         unsigned int            tolen;
 517 };
 518
 519 struct nfs3_linkargs {
 520         struct nfs_fh *         fromfh;
 521         struct nfs_fh *         tofh;
 522         const char *            toname;
 523         unsigned int            tolen;
 524 };
 525
 526 struct nfs3_readdirargs {
 527         struct nfs_fh *         fh;
 528         __u64                   cookie;
 529         __be32                  verf[2];
 530         int                     plus;
 531         unsigned int            count;
 532         struct page **          pages;
 533 };
 534
 535 struct nfs3_diropres {
 536         struct nfs_fattr *      dir_attr;
 537         struct nfs_fh *         fh;
 538         struct nfs_fattr *      fattr;
 539 };
 540
 541 struct nfs3_accessres {
 542         struct nfs_fattr *      fattr;
 543         __u32                   access;
 544 };
 545
 546 struct nfs3_readlinkargs {
 547         struct nfs_fh *         fh;
 548         unsigned int            pgbase;
 549         unsigned int            pglen;
 550         struct page **          pages;
 551 };
 552
 553 struct nfs3_renameres {
 554         struct nfs_fattr *      fromattr;
 555         struct nfs_fattr *      toattr;
 556 };
 557
 558 struct nfs3_linkres {
 559         struct nfs_fattr *      dir_attr;
 560         struct nfs_fattr *      fattr;
 561 };
 562
 563 struct nfs3_readdirres {
 564         struct nfs_fattr *      dir_attr;
 565         __be32 *                verf;
 566         int                     plus;
 567 };
 568
 569 struct nfs3_getaclres {
 570         struct nfs_fattr *      fattr;
 571         int                     mask;
 572         unsigned int            acl_access_count;
 573         unsigned int            acl_default_count;
 574         struct posix_acl *      acl_access;
 575         struct posix_acl *      acl_default;
 576 };
 577
 578 #ifdef CONFIG_NFS_V4
 579
 580 typedef u64 clientid4;
 581
 582 struct nfs4_accessargs {
 583         const struct nfs_fh *           fh;
 584         const u32 *                     bitmask;
 585         u32                             access;
 586 };
 587
 588 struct nfs4_accessres {
 589         const struct nfs_server *       server;
 590         struct nfs_fattr *              fattr;
 591         u32                             supported;
 592         u32                             access;
 593 };
 594
 595 struct nfs4_create_arg {
 596         u32                             ftype;
 597         union {
 598                 struct {
 599                         struct page **  pages;
 600                         unsigned int    len;
 601                 } symlink;   /* NF4LNK */
 602                 struct {
 603                         u32             specdata1;
 604                         u32             specdata2;
 605                 } device;    /* NF4BLK, NF4CHR */
 606         } u;
 607         const struct qstr *             name;
 608         const struct nfs_server *       server;
 609         const struct iattr *            attrs;
 610         const struct nfs_fh *           dir_fh;
 611         const u32 *                     bitmask;
 612 };
 613
 614 struct nfs4_create_res {
 615         const struct nfs_server *       server;
 616         struct nfs_fh *                 fh;
 617         struct nfs_fattr *              fattr;
 618         struct nfs4_change_info         dir_cinfo;
 619         struct nfs_fattr *              dir_fattr;
 620 };
 621
 622 struct nfs4_fsinfo_arg {
 623         const struct nfs_fh *           fh;
 624         const u32 *                     bitmask;
 625 };
 626
 627 struct nfs4_getattr_arg {
 628         const struct nfs_fh *           fh;
 629         const u32 *                     bitmask;
 630 };
 631
 632 struct nfs4_getattr_res {
 633         const struct nfs_server *       server;
 634         struct nfs_fattr *              fattr;
 635 };
 636
 637 struct nfs4_link_arg {
 638         const struct nfs_fh *           fh;
 639         const struct nfs_fh *           dir_fh;
 640         const struct qstr *             name;
 641         const u32 *                     bitmask;
 642 };
 643
 644 struct nfs4_link_res {
 645         const struct nfs_server *       server;
 646         struct nfs_fattr *              fattr;
 647         struct nfs4_change_info         cinfo;
 648         struct nfs_fattr *              dir_attr;
 649 };
 650
 651
 652 struct nfs4_lookup_arg {
 653         const struct nfs_fh *           dir_fh;
 654         const struct qstr *             name;
 655         const u32 *                     bitmask;
 656 };
 657
 658 struct nfs4_lookup_res {
 659         const struct nfs_server *       server;
 660         struct nfs_fattr *              fattr;
 661         struct nfs_fh *                 fh;
 662 };
 663
 664 struct nfs4_lookup_root_arg {
 665         const u32 *                     bitmask;
 666 };
 667
 668 struct nfs4_pathconf_arg {
 669         const struct nfs_fh *           fh;
 670         const u32 *                     bitmask;
 671 };
 672
 673 struct nfs4_readdir_arg {
 674         const struct nfs_fh *           fh;
 675         u64                             cookie;
 676         nfs4_verifier                   verifier;
 677         u32                             count;
 678         struct page **                  pages;  /* zero-copy data */
 679         unsigned int                    pgbase; /* zero-copy data */
 680         const u32 *                     bitmask;
 681 };
 682
 683 struct nfs4_readdir_res {
 684         nfs4_verifier                   verifier;
 685         unsigned int                    pgbase;
 686 };
 687
 688 struct nfs4_readlink {
 689         const struct nfs_fh *           fh;
 690         unsigned int                    pgbase;
 691         unsigned int                    pglen;   /* zero-copy data */
 692         struct page **                  pages;   /* zero-copy data */
 693 };
 694
 695 struct nfs4_rename_arg {
 696         const struct nfs_fh *           old_dir;
 697         const struct nfs_fh *           new_dir;
 698         const struct qstr *             old_name;
 699         const struct qstr *             new_name;
 700         const u32 *                     bitmask;
 701 };
 702
 703 struct nfs4_rename_res {
 704         const struct nfs_server *       server;
 705         struct nfs4_change_info         old_cinfo;
 706         struct nfs_fattr *              old_fattr;
 707         struct nfs4_change_info         new_cinfo;
 708         struct nfs_fattr *              new_fattr;
 709 };
 710
 711 #define NFS4_SETCLIENTID_NAMELEN        (127)
 712 struct nfs4_setclientid {
 713         const nfs4_verifier *           sc_verifier;
 714         unsigned int                    sc_name_len;
 715         char                            sc_name[NFS4_SETCLIENTID_NAMELEN + 1];
 716         u32                             sc_prog;
 717         unsigned int                    sc_netid_len;
 718         char                            sc_netid[RPCBIND_MAXNETIDLEN + 1];
 719         unsigned int                    sc_uaddr_len;
 720         char                            sc_uaddr[RPCBIND_MAXUADDRLEN + 1];
 721         u32                             sc_cb_ident;
 722 };
 723
 724 struct nfs4_statfs_arg {
 725         const struct nfs_fh *           fh;
 726         const u32 *                     bitmask;
 727 };
 728
 729 struct nfs4_server_caps_res {
 730         u32                             attr_bitmask[2];
 731         u32                             acl_bitmask;
 732         u32                             has_links;
 733         u32                             has_symlinks;
 734 };
 735
 736 struct nfs4_string {
 737         unsigned int len;
 738         char *data;
 739 };
 740
 741 #define NFS4_PATHNAME_MAXCOMPONENTS 512
 742 struct nfs4_pathname {
 743         unsigned int ncomponents;
 744         struct nfs4_string components[NFS4_PATHNAME_MAXCOMPONENTS];
 745 };
 746
 747 #define NFS4_FS_LOCATION_MAXSERVERS 10
 748 struct nfs4_fs_location {
 749         unsigned int nservers;
 750         struct nfs4_string servers[NFS4_FS_LOCATION_MAXSERVERS];
 751         struct nfs4_pathname rootpath;
 752 };
 753
 754 #define NFS4_FS_LOCATIONS_MAXENTRIES 10
 755 struct nfs4_fs_locations {
 756         struct nfs_fattr fattr;
 757         const struct nfs_server *server;
 758         struct nfs4_pathname fs_path;
 759         int nlocations;
 760         struct nfs4_fs_location locations[NFS4_FS_LOCATIONS_MAXENTRIES];
 761 };
 762
 763 struct nfs4_fs_locations_arg {
 764         const struct nfs_fh *dir_fh;
 765         const struct qstr *name;
 766         struct page *page;
 767         const u32 *bitmask;
 768 };
 769
 770 #endif /* CONFIG_NFS_V4 */
 771
 772 struct nfs_page;
 773
 774 #define NFS_PAGEVEC_SIZE        (8U)
 775
 776 struct nfs_read_data {
 777         int                     flags;
 778         struct rpc_task         task;
 779         struct inode            *inode;
 780         struct rpc_cred         *cred;
 781         struct nfs_fattr        fattr;  /* fattr storage */
 782         struct list_head        pages;  /* Coalesced read requests */
 783         struct nfs_page         *req;   /* multi ops per nfs_page */
 784         struct page             **pagevec;
 785         unsigned int            npages; /* Max length of pagevec */
 786         struct nfs_readargs args;
 787         struct nfs_readres  res;
 788 #ifdef CONFIG_NFS_V4
 789         unsigned long           timestamp;      /* For lease renewal */
 790 #endif
 791         struct page             *page_array[NFS_PAGEVEC_SIZE];
 792 };
 793
 794 struct nfs_write_data {
 795         int                     flags;
 796         struct rpc_task         task;
 797         struct inode            *inode;
 798         struct rpc_cred         *cred;
 799         struct nfs_fattr        fattr;
 800         struct nfs_writeverf    verf;
 801         struct list_head        pages;          /* Coalesced requests we wish to flush */
 802         struct nfs_page         *req;           /* multi ops per nfs_page */
 803         struct page             **pagevec;
 804         unsigned int            npages;         /* Max length of pagevec */
 805         struct nfs_writeargs    args;           /* argument struct */
 806         struct nfs_writeres     res;            /* result struct */
 807 #ifdef CONFIG_NFS_V4
 808         unsigned long           timestamp;      /* For lease renewal */
 809 #endif
 810         struct page             *page_array[NFS_PAGEVEC_SIZE];
 811 };
 812
 813 struct nfs_access_entry;
 814
 815 /*
 816  * RPC procedure vector for NFSv2/NFSv3 demuxing
 817  */
 818 struct nfs_rpc_ops {
 819         u32     version;                /* Protocol version */
 820         const struct dentry_operations *dentry_ops;
 821         const struct inode_operations *dir_inode_ops;
 822         const struct inode_operations *file_inode_ops;
 823
 824         int     (*getroot) (struct nfs_server *, struct nfs_fh *,
 825                             struct nfs_fsinfo *);
 826         int     (*lookupfh)(struct nfs_server *, struct nfs_fh *,
 827                             struct qstr *, struct nfs_fh *,
 828                             struct nfs_fattr *);
 829         int     (*getattr) (struct nfs_server *, struct nfs_fh *,
 830                             struct nfs_fattr *);
 831         int     (*setattr) (struct dentry *, struct nfs_fattr *,
 832                             struct iattr *);
 833         int     (*lookup)  (struct inode *, struct qstr *,
 834                             struct nfs_fh *, struct nfs_fattr *);
 835         int     (*access)  (struct inode *, struct nfs_access_entry *);
 836         int     (*readlink)(struct inode *, struct page *, unsigned int,
 837                             unsigned int);
 838         int     (*create)  (struct inode *, struct dentry *,
 839                             struct iattr *, int, struct nameidata *);
 840         int     (*remove)  (struct inode *, struct qstr *);
 841         void    (*unlink_setup)  (struct rpc_message *, struct inode *dir);
 842         int     (*unlink_done) (struct rpc_task *, struct inode *);
 843         int     (*rename)  (struct inode *, struct qstr *,
 844                             struct inode *, struct qstr *);
 845         int     (*link)    (struct inode *, struct inode *, struct qstr *);
 846         int     (*symlink) (struct inode *, struct dentry *, struct page *,
 847                             unsigned int, struct iattr *);
 848         int     (*mkdir)   (struct inode *, struct dentry *, struct iattr *);
 849         int     (*rmdir)   (struct inode *, struct qstr *);
 850         int     (*readdir) (struct dentry *, struct rpc_cred *,
 851                             u64, struct page *, unsigned int, int);
 852         int     (*mknod)   (struct inode *, struct dentry *, struct iattr *,
 853                             dev_t);
 854         int     (*statfs)  (struct nfs_server *, struct nfs_fh *,
 855                             struct nfs_fsstat *);
 856         int     (*fsinfo)  (struct nfs_server *, struct nfs_fh *,
 857                             struct nfs_fsinfo *);
 858         int     (*pathconf) (struct nfs_server *, struct nfs_fh *,
 859                              struct nfs_pathconf *);
 860         int     (*set_capabilities)(struct nfs_server *, struct nfs_fh *);
 861         __be32 *(*decode_dirent)(__be32 *, struct nfs_entry *, int plus);
 862         void    (*read_setup)   (struct nfs_read_data *, struct rpc_message *);
 863         int     (*read_done)  (struct rpc_task *, struct nfs_read_data *);
 864         void    (*write_setup)  (struct nfs_write_data *, struct rpc_message *);
 865         int     (*write_done)  (struct rpc_task *, struct nfs_write_data *);
 866         void    (*commit_setup) (struct nfs_write_data *, struct rpc_message *);
 867         int     (*commit_done) (struct rpc_task *, struct nfs_write_data *);
 868         int     (*lock)(struct file *, int, struct file_lock *);
 869         int     (*lock_check_bounds)(const struct file_lock *);
 870         void    (*clear_acl_cache)(struct inode *);
 871         void    (*close_context)(struct nfs_open_context *ctx, int);
 872 };
 873
 874 /*
 875  *      NFS_CALL(getattr, inode, (fattr));
 876  * into
 877  *      NFS_PROTO(inode)->getattr(fattr);
 878  */
 879 #define NFS_CALL(op, inode, args)       NFS_PROTO(inode)->op args
 880
 881 /*
 882  * Function vectors etc. for the NFS client
 883  */
 884 extern const struct nfs_rpc_ops nfs_v2_clientops;
 885 extern const struct nfs_rpc_ops nfs_v3_clientops;
 886 extern const struct nfs_rpc_ops nfs_v4_clientops;
 887 extern struct rpc_version       nfs_version2;
 888 extern struct rpc_version       nfs_version3;
 889 extern struct rpc_version       nfs_version4;
 890
 891 extern struct rpc_version       nfsacl_version3;
 892 extern struct rpc_program       nfsacl_program;
 893
 894 #endif