include/linux/nfs_xdr.h

   1 #ifndef _LINUX_NFS_XDR_H
   2 #define _LINUX_NFS_XDR_H
   3
   4 #include <linux/nfsacl.h>
   5 #include <linux/nfs3.h>
   6
   7 /*
   8  * To change the maximum rsize and wsize supported by the NFS client, adjust
   9  * NFS_MAX_FILE_IO_SIZE.  64KB is a typical maximum, but some servers can
  10  * support a megabyte or more.  The default is left at 4096 bytes, which is
  11  * reasonable for NFS over UDP.
  12  */
  13 #define NFS_MAX_FILE_IO_SIZE    (1048576U)
  14 #define NFS_DEF_FILE_IO_SIZE    (4096U)
  15 #define NFS_MIN_FILE_IO_SIZE    (1024U)
  16
  17 struct nfs_fsid {
  18         uint64_t                major;
  19         uint64_t                minor;
  20 };
  21
  22 /*
  23  * Helper for checking equality between 2 fsids.
  24  */
  25 static inline int nfs_fsid_equal(const struct nfs_fsid *a, const struct nfs_fsid *b)
  26 {
  27         return a->major == b->major && a->minor == b->minor;
  28 }
  29
  30 struct nfs_fattr {
  31         unsigned int            valid;          /* which fields are valid */
  32         umode_t                 mode;
  33         __u32                   nlink;
  34         __u32                   uid;
  35         __u32                   gid;
  36         dev_t                   rdev;
  37         __u64                   size;
  38         union {
  39                 struct {
  40                         __u32   blocksize;
  41                         __u32   blocks;
  42                 } nfs2;
  43                 struct {
  44                         __u64   used;
  45                 } nfs3;
  46         } du;
  47         struct nfs_fsid         fsid;
  48         __u64                   fileid;
  49         struct timespec         atime;
  50         struct timespec         mtime;
  51         struct timespec         ctime;
  52         __u64                   change_attr;    /* NFSv4 change attribute */
  53         __u64                   pre_change_attr;/* pre-op NFSv4 change attribute */
  54         __u64                   pre_size;       /* pre_op_attr.size       */
  55         struct timespec         pre_mtime;      /* pre_op_attr.mtime      */
  56         struct timespec         pre_ctime;      /* pre_op_attr.ctime      */
  57         unsigned long           time_start;
  58         unsigned long           gencount;
  59 };
  60
  61 #define NFS_ATTR_FATTR_TYPE             (1U << 0)
  62 #define NFS_ATTR_FATTR_MODE             (1U << 1)
  63 #define NFS_ATTR_FATTR_NLINK            (1U << 2)
  64 #define NFS_ATTR_FATTR_OWNER            (1U << 3)
  65 #define NFS_ATTR_FATTR_GROUP            (1U << 4)
  66 #define NFS_ATTR_FATTR_RDEV             (1U << 5)
  67 #define NFS_ATTR_FATTR_SIZE             (1U << 6)
  68 #define NFS_ATTR_FATTR_PRESIZE          (1U << 7)
  69 #define NFS_ATTR_FATTR_BLOCKS_USED      (1U << 8)
  70 #define NFS_ATTR_FATTR_SPACE_USED       (1U << 9)
  71 #define NFS_ATTR_FATTR_FSID             (1U << 10)
  72 #define NFS_ATTR_FATTR_FILEID           (1U << 11)
  73 #define NFS_ATTR_FATTR_ATIME            (1U << 12)
  74 #define NFS_ATTR_FATTR_MTIME            (1U << 13)
  75 #define NFS_ATTR_FATTR_CTIME            (1U << 14)
  76 #define NFS_ATTR_FATTR_PREMTIME         (1U << 15)
  77 #define NFS_ATTR_FATTR_PRECTIME         (1U << 16)
  78 #define NFS_ATTR_FATTR_CHANGE           (1U << 17)
  79 #define NFS_ATTR_FATTR_PRECHANGE        (1U << 18)
  80 #define NFS_ATTR_FATTR_V4_REFERRAL      (1U << 19)      /* NFSv4 referral */
  81
  82 #define NFS_ATTR_FATTR (NFS_ATTR_FATTR_TYPE \
  83                 | NFS_ATTR_FATTR_MODE \
  84                 | NFS_ATTR_FATTR_NLINK \
  85                 | NFS_ATTR_FATTR_OWNER \
  86                 | NFS_ATTR_FATTR_GROUP \
  87                 | NFS_ATTR_FATTR_RDEV \
  88                 | NFS_ATTR_FATTR_SIZE \
  89                 | NFS_ATTR_FATTR_FSID \
  90                 | NFS_ATTR_FATTR_FILEID \
  91                 | NFS_ATTR_FATTR_ATIME \
  92                 | NFS_ATTR_FATTR_MTIME \
  93                 | NFS_ATTR_FATTR_CTIME)
  94 #define NFS_ATTR_FATTR_V2 (NFS_ATTR_FATTR \
  95                 | NFS_ATTR_FATTR_BLOCKS_USED)
  96 #define NFS_ATTR_FATTR_V3 (NFS_ATTR_FATTR \
  97                 | NFS_ATTR_FATTR_SPACE_USED)
  98 #define NFS_ATTR_FATTR_V4 (NFS_ATTR_FATTR \
  99                 | NFS_ATTR_FATTR_SPACE_USED \
 100                 | NFS_ATTR_FATTR_CHANGE)
 101
 102 /*
 103  * Info on the file system
 104  */
 105 struct nfs_fsinfo {
 106         struct nfs_fattr        *fattr; /* Post-op attributes */
 107         __u32                   rtmax;  /* max.  read transfer size */
 108         __u32                   rtpref; /* pref. read transfer size */
 109         __u32                   rtmult; /* reads should be multiple of this */
 110         __u32                   wtmax;  /* max.  write transfer size */
 111         __u32                   wtpref; /* pref. write transfer size */
 112         __u32                   wtmult; /* writes should be multiple of this */
 113         __u32                   dtpref; /* pref. readdir transfer size */
 114         __u64                   maxfilesize;
 115         struct timespec         time_delta; /* server time granularity */
 116         __u32                   lease_time; /* in seconds */
 117         __u32                   layouttype; /* supported pnfs layout driver */
 118 };
 119
 120 struct nfs_fsstat {
 121         struct nfs_fattr        *fattr; /* Post-op attributes */
 122         __u64                   tbytes; /* total size in bytes */
 123         __u64                   fbytes; /* # of free bytes */
 124         __u64                   abytes; /* # of bytes available to user */
 125         __u64                   tfiles; /* # of files */
 126         __u64                   ffiles; /* # of free files */
 127         __u64                   afiles; /* # of files available to user */
 128 };
 129
 130 struct nfs2_fsstat {
 131         __u32                   tsize;  /* Server transfer size */
 132         __u32                   bsize;  /* Filesystem block size */
 133         __u32                   blocks; /* No. of "bsize" blocks on filesystem */
 134         __u32                   bfree;  /* No. of free "bsize" blocks */
 135         __u32                   bavail; /* No. of available "bsize" blocks */
 136 };
 137
 138 struct nfs_pathconf {
 139         struct nfs_fattr        *fattr; /* Post-op attributes */
 140         __u32                   max_link; /* max # of hard links */
 141         __u32                   max_namelen; /* max name length */
 142 };
 143
 144 struct nfs4_change_info {
 145         u32                     atomic;
 146         u64                     before;
 147         u64                     after;
 148 };
 149
 150 struct nfs_seqid;
 151
 152 /* nfs41 sessions channel attributes */
 153 struct nfs4_channel_attrs {
 154         u32                     headerpadsz;
 155         u32                     max_rqst_sz;
 156         u32                     max_resp_sz;
 157         u32                     max_resp_sz_cached;
 158         u32                     max_ops;
 159         u32                     max_reqs;
 160 };
 161
 162 /* nfs41 sessions slot seqid */
 163 struct nfs4_slot {
 164         u32                     seq_nr;
 165 };
 166
 167 struct nfs4_sequence_args {
 168         struct nfs4_session     *sa_session;
 169         u8                      sa_slotid;
 170         u8                      sa_cache_this;
 171 };
 172
 173 struct nfs4_sequence_res {
 174         struct nfs4_session     *sr_session;
 175         struct nfs4_slot        *sr_slot;       /* slot used to send request */
 176         int                     sr_status;      /* sequence operation status */
 177         unsigned long           sr_renewal_time;
 178         u32                     sr_status_flags;
 179 };
 180
 181 struct nfs4_get_lease_time_args {
 182         struct nfs4_sequence_args       la_seq_args;
 183 };
 184
 185 struct nfs4_get_lease_time_res {
 186         struct nfs_fsinfo              *lr_fsinfo;
 187         struct nfs4_sequence_res        lr_seq_res;
 188 };
 189
 190 /*
 191  * Arguments to the open call.
 192  */
 193 struct nfs_openargs {
 194         const struct nfs_fh *   fh;
 195         struct nfs_seqid *      seqid;
 196         int                     open_flags;
 197         fmode_t                 fmode;
 198         __u64                   clientid;
 199         __u64                   id;
 200         union {
 201                 struct {
 202                         struct iattr *  attrs;    /* UNCHECKED, GUARDED */
 203                         nfs4_verifier   verifier; /* EXCLUSIVE */
 204                 };
 205                 nfs4_stateid    delegation;             /* CLAIM_DELEGATE_CUR */
 206                 fmode_t         delegation_type;        /* CLAIM_PREVIOUS */
 207         } u;
 208         const struct qstr *     name;
 209         const struct nfs_server *server;         /* Needed for ID mapping */
 210         const u32 *             bitmask;
 211         __u32                   claim;
 212         struct nfs4_sequence_args       seq_args;
 213 };
 214
 215 struct nfs_openres {
 216         nfs4_stateid            stateid;
 217         struct nfs_fh           fh;
 218         struct nfs4_change_info cinfo;
 219         __u32                   rflags;
 220         struct nfs_fattr *      f_attr;
 221         struct nfs_fattr *      dir_attr;
 222         struct nfs_seqid *      seqid;
 223         const struct nfs_server *server;
 224         fmode_t                 delegation_type;
 225         nfs4_stateid            delegation;
 226         __u32                   do_recall;
 227         __u64                   maxsize;
 228         __u32                   attrset[NFS4_BITMAP_SIZE];
 229         struct nfs4_sequence_res        seq_res;
 230 };
 231
 232 /*
 233  * Arguments to the open_confirm call.
 234  */
 235 struct nfs_open_confirmargs {
 236         const struct nfs_fh *   fh;
 237         nfs4_stateid *          stateid;
 238         struct nfs_seqid *      seqid;
 239 };
 240
 241 struct nfs_open_confirmres {
 242         nfs4_stateid            stateid;
 243         struct nfs_seqid *      seqid;
 244 };
 245
 246 /*
 247  * Arguments to the close call.
 248  */
 249 struct nfs_closeargs {
 250         struct nfs_fh *         fh;
 251         nfs4_stateid *          stateid;
 252         struct nfs_seqid *      seqid;
 253         fmode_t                 fmode;
 254         const u32 *             bitmask;
 255         struct nfs4_sequence_args       seq_args;
 256 };
 257
 258 struct nfs_closeres {
 259         nfs4_stateid            stateid;
 260         struct nfs_fattr *      fattr;
 261         struct nfs_seqid *      seqid;
 262         const struct nfs_server *server;
 263         struct nfs4_sequence_res        seq_res;
 264 };
 265 /*
 266  *  * Arguments to the lock,lockt, and locku call.
 267  *   */
 268 struct nfs_lowner {
 269         __u64                   clientid;
 270         __u64                   id;
 271 };
 272
 273 struct nfs_lock_args {
 274         struct nfs_fh *         fh;
 275         struct file_lock *      fl;
 276         struct nfs_seqid *      lock_seqid;
 277         nfs4_stateid *          lock_stateid;
 278         struct nfs_seqid *      open_seqid;
 279         nfs4_stateid *          open_stateid;
 280         struct nfs_lowner       lock_owner;
 281         unsigned char           block : 1;
 282         unsigned char           reclaim : 1;
 283         unsigned char           new_lock_owner : 1;
 284         struct nfs4_sequence_args       seq_args;
 285 };
 286
 287 struct nfs_lock_res {
 288         nfs4_stateid            stateid;
 289         struct nfs_seqid *      lock_seqid;
 290         struct nfs_seqid *      open_seqid;
 291         struct nfs4_sequence_res        seq_res;
 292 };
 293
 294 struct nfs_locku_args {
 295         struct nfs_fh *         fh;
 296         struct file_lock *      fl;
 297         struct nfs_seqid *      seqid;
 298         nfs4_stateid *          stateid;
 299         struct nfs4_sequence_args       seq_args;
 300 };
 301
 302 struct nfs_locku_res {
 303         nfs4_stateid            stateid;
 304         struct nfs_seqid *      seqid;
 305         struct nfs4_sequence_res        seq_res;
 306 };
 307
 308 struct nfs_lockt_args {
 309         struct nfs_fh *         fh;
 310         struct file_lock *      fl;
 311         struct nfs_lowner       lock_owner;
 312         struct nfs4_sequence_args       seq_args;
 313 };
 314
 315 struct nfs_lockt_res {
 316         struct file_lock *      denied; /* LOCK, LOCKT failed */
 317         struct nfs4_sequence_res        seq_res;
 318 };
 319
 320 struct nfs_release_lockowner_args {
 321         struct nfs_lowner       lock_owner;
 322 };
 323
 324 struct nfs4_delegreturnargs {
 325         const struct nfs_fh *fhandle;
 326         const nfs4_stateid *stateid;
 327         const u32 * bitmask;
 328         struct nfs4_sequence_args       seq_args;
 329 };
 330
 331 struct nfs4_delegreturnres {
 332         struct nfs_fattr * fattr;
 333         const struct nfs_server *server;
 334         struct nfs4_sequence_res        seq_res;
 335 };
 336
 337 /*
 338  * Arguments to the read call.
 339  */
 340 struct nfs_readargs {
 341         struct nfs_fh *         fh;
 342         struct nfs_open_context *context;
 343         struct nfs_lock_context *lock_context;
 344         __u64                   offset;
 345         __u32                   count;
 346         unsigned int            pgbase;
 347         struct page **          pages;
 348         struct nfs4_sequence_args       seq_args;
 349 };
 350
 351 struct nfs_readres {
 352         struct nfs_fattr *      fattr;
 353         __u32                   count;
 354         int                     eof;
 355         struct nfs4_sequence_res        seq_res;
 356 };
 357
 358 /*
 359  * Arguments to the write call.
 360  */
 361 struct nfs_writeargs {
 362         struct nfs_fh *         fh;
 363         struct nfs_open_context *context;
 364         struct nfs_lock_context *lock_context;
 365         __u64                   offset;
 366         __u32                   count;
 367         enum nfs3_stable_how    stable;
 368         unsigned int            pgbase;
 369         struct page **          pages;
 370         const u32 *             bitmask;
 371         struct nfs4_sequence_args       seq_args;
 372 };
 373
 374 struct nfs_writeverf {
 375         enum nfs3_stable_how    committed;
 376         __be32                  verifier[2];
 377 };
 378
 379 struct nfs_writeres {
 380         struct nfs_fattr *      fattr;
 381         struct nfs_writeverf *  verf;
 382         __u32                   count;
 383         const struct nfs_server *server;
 384         struct nfs4_sequence_res        seq_res;
 385 };
 386
 387 /*
 388  * Common arguments to the unlink call
 389  */
 390 struct nfs_removeargs {
 391         const struct nfs_fh     *fh;
 392         struct qstr             name;
 393         const u32 *             bitmask;
 394         struct nfs4_sequence_args       seq_args;
 395 };
 396
 397 struct nfs_removeres {
 398         const struct nfs_server *server;
 399         struct nfs_fattr        *dir_attr;
 400         struct nfs4_change_info cinfo;
 401         struct nfs4_sequence_res        seq_res;
 402 };
 403
 404 /*
 405  * Common arguments to the rename call
 406  */
 407 struct nfs_renameargs {
 408         const struct nfs_fh             *old_dir;
 409         const struct nfs_fh             *new_dir;
 410         const struct qstr               *old_name;
 411         const struct qstr               *new_name;
 412         const u32                       *bitmask;
 413         struct nfs4_sequence_args       seq_args;
 414 };
 415
 416 struct nfs_renameres {
 417         const struct nfs_server         *server;
 418         struct nfs4_change_info         old_cinfo;
 419         struct nfs_fattr                *old_fattr;
 420         struct nfs4_change_info         new_cinfo;
 421         struct nfs_fattr                *new_fattr;
 422         struct nfs4_sequence_res        seq_res;
 423 };
 424
 425 /*
 426  * Argument struct for decode_entry function
 427  */
 428 struct nfs_entry {
 429         __u64                   ino;
 430         __u64                   cookie,
 431                                 prev_cookie;
 432         const char *            name;
 433         unsigned int            len;
 434         int                     eof;
 435         struct nfs_fh *         fh;
 436         struct nfs_fattr *      fattr;
 437 };
 438
 439 /*
 440  * The following types are for NFSv2 only.
 441  */
 442 struct nfs_sattrargs {
 443         struct nfs_fh *         fh;
 444         struct iattr *          sattr;
 445 };
 446
 447 struct nfs_diropargs {
 448         struct nfs_fh *         fh;
 449         const char *            name;
 450         unsigned int            len;
 451 };
 452
 453 struct nfs_createargs {
 454         struct nfs_fh *         fh;
 455         const char *            name;
 456         unsigned int            len;
 457         struct iattr *          sattr;
 458 };
 459
 460 struct nfs_setattrargs {
 461         struct nfs_fh *                 fh;
 462         nfs4_stateid                    stateid;
 463         struct iattr *                  iap;
 464         const struct nfs_server *       server; /* Needed for name mapping */
 465         const u32 *                     bitmask;
 466         struct nfs4_sequence_args       seq_args;
 467 };
 468
 469 struct nfs_setaclargs {
 470         struct nfs_fh *                 fh;
 471         size_t                          acl_len;
 472         unsigned int                    acl_pgbase;
 473         struct page **                  acl_pages;
 474         struct nfs4_sequence_args       seq_args;
 475 };
 476
 477 struct nfs_setaclres {
 478         struct nfs4_sequence_res        seq_res;
 479 };
 480
 481 struct nfs_getaclargs {
 482         struct nfs_fh *                 fh;
 483         size_t                          acl_len;
 484         unsigned int                    acl_pgbase;
 485         struct page **                  acl_pages;
 486         struct nfs4_sequence_args       seq_args;
 487 };
 488
 489 struct nfs_getaclres {
 490         size_t                          acl_len;
 491         struct nfs4_sequence_res        seq_res;
 492 };
 493
 494 struct nfs_setattrres {
 495         struct nfs_fattr *              fattr;
 496         const struct nfs_server *       server;
 497         struct nfs4_sequence_res        seq_res;
 498 };
 499
 500 struct nfs_linkargs {
 501         struct nfs_fh *         fromfh;
 502         struct nfs_fh *         tofh;
 503         const char *            toname;
 504         unsigned int            tolen;
 505 };
 506
 507 struct nfs_symlinkargs {
 508         struct nfs_fh *         fromfh;
 509         const char *            fromname;
 510         unsigned int            fromlen;
 511         struct page **          pages;
 512         unsigned int            pathlen;
 513         struct iattr *          sattr;
 514 };
 515
 516 struct nfs_readdirargs {
 517         struct nfs_fh *         fh;
 518         __u32                   cookie;
 519         unsigned int            count;
 520         struct page **          pages;
 521 };
 522
 523 struct nfs3_getaclargs {
 524         struct nfs_fh *         fh;
 525         int                     mask;
 526         struct page **          pages;
 527 };
 528
 529 struct nfs3_setaclargs {
 530         struct inode *          inode;
 531         int                     mask;
 532         struct posix_acl *      acl_access;
 533         struct posix_acl *      acl_default;
 534         size_t                  len;
 535         unsigned int            npages;
 536         struct page **          pages;
 537 };
 538
 539 struct nfs_diropok {
 540         struct nfs_fh *         fh;
 541         struct nfs_fattr *      fattr;
 542 };
 543
 544 struct nfs_readlinkargs {
 545         struct nfs_fh *         fh;
 546         unsigned int            pgbase;
 547         unsigned int            pglen;
 548         struct page **          pages;
 549 };
 550
 551 struct nfs3_sattrargs {
 552         struct nfs_fh *         fh;
 553         struct iattr *          sattr;
 554         unsigned int            guard;
 555         struct timespec         guardtime;
 556 };
 557
 558 struct nfs3_diropargs {
 559         struct nfs_fh *         fh;
 560         const char *            name;
 561         unsigned int            len;
 562 };
 563
 564 struct nfs3_accessargs {
 565         struct nfs_fh *         fh;
 566         __u32                   access;
 567 };
 568
 569 struct nfs3_createargs {
 570         struct nfs_fh *         fh;
 571         const char *            name;
 572         unsigned int            len;
 573         struct iattr *          sattr;
 574         enum nfs3_createmode    createmode;
 575         __be32                  verifier[2];
 576 };
 577
 578 struct nfs3_mkdirargs {
 579         struct nfs_fh *         fh;
 580         const char *            name;
 581         unsigned int            len;
 582         struct iattr *          sattr;
 583 };
 584
 585 struct nfs3_symlinkargs {
 586         struct nfs_fh *         fromfh;
 587         const char *            fromname;
 588         unsigned int            fromlen;
 589         struct page **          pages;
 590         unsigned int            pathlen;
 591         struct iattr *          sattr;
 592 };
 593
 594 struct nfs3_mknodargs {
 595         struct nfs_fh *         fh;
 596         const char *            name;
 597         unsigned int            len;
 598         enum nfs3_ftype         type;
 599         struct iattr *          sattr;
 600         dev_t                   rdev;
 601 };
 602
 603 struct nfs3_linkargs {
 604         struct nfs_fh *         fromfh;
 605         struct nfs_fh *         tofh;
 606         const char *            toname;
 607         unsigned int            tolen;
 608 };
 609
 610 struct nfs3_readdirargs {
 611         struct nfs_fh *         fh;
 612         __u64                   cookie;
 613         __be32                  verf[2];
 614         int                     plus;
 615         unsigned int            count;
 616         struct page **          pages;
 617 };
 618
 619 struct nfs3_diropres {
 620         struct nfs_fattr *      dir_attr;
 621         struct nfs_fh *         fh;
 622         struct nfs_fattr *      fattr;
 623 };
 624
 625 struct nfs3_accessres {
 626         struct nfs_fattr *      fattr;
 627         __u32                   access;
 628 };
 629
 630 struct nfs3_readlinkargs {
 631         struct nfs_fh *         fh;
 632         unsigned int            pgbase;
 633         unsigned int            pglen;
 634         struct page **          pages;
 635 };
 636
 637 struct nfs3_linkres {
 638         struct nfs_fattr *      dir_attr;
 639         struct nfs_fattr *      fattr;
 640 };
 641
 642 struct nfs3_readdirres {
 643         struct nfs_fattr *      dir_attr;
 644         __be32 *                verf;
 645         int                     plus;
 646 };
 647
 648 struct nfs3_getaclres {
 649         struct nfs_fattr *      fattr;
 650         int                     mask;
 651         unsigned int            acl_access_count;
 652         unsigned int            acl_default_count;
 653         struct posix_acl *      acl_access;
 654         struct posix_acl *      acl_default;
 655 };
 656
 657 #ifdef CONFIG_NFS_V4
 658
 659 typedef u64 clientid4;
 660
 661 struct nfs4_accessargs {
 662         const struct nfs_fh *           fh;
 663         const u32 *                     bitmask;
 664         u32                             access;
 665         struct nfs4_sequence_args       seq_args;
 666 };
 667
 668 struct nfs4_accessres {
 669         const struct nfs_server *       server;
 670         struct nfs_fattr *              fattr;
 671         u32                             supported;
 672         u32                             access;
 673         struct nfs4_sequence_res        seq_res;
 674 };
 675
 676 struct nfs4_create_arg {
 677         u32                             ftype;
 678         union {
 679                 struct {
 680                         struct page **  pages;
 681                         unsigned int    len;
 682                 } symlink;   /* NF4LNK */
 683                 struct {
 684                         u32             specdata1;
 685                         u32             specdata2;
 686                 } device;    /* NF4BLK, NF4CHR */
 687         } u;
 688         const struct qstr *             name;
 689         const struct nfs_server *       server;
 690         const struct iattr *            attrs;
 691         const struct nfs_fh *           dir_fh;
 692         const u32 *                     bitmask;
 693         struct nfs4_sequence_args       seq_args;
 694 };
 695
 696 struct nfs4_create_res {
 697         const struct nfs_server *       server;
 698         struct nfs_fh *                 fh;
 699         struct nfs_fattr *              fattr;
 700         struct nfs4_change_info         dir_cinfo;
 701         struct nfs_fattr *              dir_fattr;
 702         struct nfs4_sequence_res        seq_res;
 703 };
 704
 705 struct nfs4_fsinfo_arg {
 706         const struct nfs_fh *           fh;
 707         const u32 *                     bitmask;
 708         struct nfs4_sequence_args       seq_args;
 709 };
 710
 711 struct nfs4_fsinfo_res {
 712         struct nfs_fsinfo              *fsinfo;
 713         struct nfs4_sequence_res        seq_res;
 714 };
 715
 716 struct nfs4_getattr_arg {
 717         const struct nfs_fh *           fh;
 718         const u32 *                     bitmask;
 719         struct nfs4_sequence_args       seq_args;
 720 };
 721
 722 struct nfs4_getattr_res {
 723         const struct nfs_server *       server;
 724         struct nfs_fattr *              fattr;
 725         struct nfs4_sequence_res        seq_res;
 726 };
 727
 728 struct nfs4_link_arg {
 729         const struct nfs_fh *           fh;
 730         const struct nfs_fh *           dir_fh;
 731         const struct qstr *             name;
 732         const u32 *                     bitmask;
 733         struct nfs4_sequence_args       seq_args;
 734 };
 735
 736 struct nfs4_link_res {
 737         const struct nfs_server *       server;
 738         struct nfs_fattr *              fattr;
 739         struct nfs4_change_info         cinfo;
 740         struct nfs_fattr *              dir_attr;
 741         struct nfs4_sequence_res        seq_res;
 742 };
 743
 744
 745 struct nfs4_lookup_arg {
 746         const struct nfs_fh *           dir_fh;
 747         const struct qstr *             name;
 748         const u32 *                     bitmask;
 749         struct nfs4_sequence_args       seq_args;
 750 };
 751
 752 struct nfs4_lookup_res {
 753         const struct nfs_server *       server;
 754         struct nfs_fattr *              fattr;
 755         struct nfs_fh *                 fh;
 756         struct nfs4_sequence_res        seq_res;
 757 };
 758
 759 struct nfs4_lookup_root_arg {
 760         const u32 *                     bitmask;
 761         struct nfs4_sequence_args       seq_args;
 762 };
 763
 764 struct nfs4_pathconf_arg {
 765         const struct nfs_fh *           fh;
 766         const u32 *                     bitmask;
 767         struct nfs4_sequence_args       seq_args;
 768 };
 769
 770 struct nfs4_pathconf_res {
 771         struct nfs_pathconf            *pathconf;
 772         struct nfs4_sequence_res        seq_res;
 773 };
 774
 775 struct nfs4_readdir_arg {
 776         const struct nfs_fh *           fh;
 777         u64                             cookie;
 778         nfs4_verifier                   verifier;
 779         u32                             count;
 780         struct page **                  pages;  /* zero-copy data */
 781         unsigned int                    pgbase; /* zero-copy data */
 782         const u32 *                     bitmask;
 783         int                             plus;
 784         struct nfs4_sequence_args       seq_args;
 785 };
 786
 787 struct nfs4_readdir_res {
 788         nfs4_verifier                   verifier;
 789         unsigned int                    pgbase;
 790         struct nfs4_sequence_res        seq_res;
 791 };
 792
 793 struct nfs4_readlink {
 794         const struct nfs_fh *           fh;
 795         unsigned int                    pgbase;
 796         unsigned int                    pglen;   /* zero-copy data */
 797         struct page **                  pages;   /* zero-copy data */
 798         struct nfs4_sequence_args       seq_args;
 799 };
 800
 801 struct nfs4_readlink_res {
 802         struct nfs4_sequence_res        seq_res;
 803 };
 804
 805 #define NFS4_SETCLIENTID_NAMELEN        (127)
 806 struct nfs4_setclientid {
 807         const nfs4_verifier *           sc_verifier;
 808         unsigned int                    sc_name_len;
 809         char                            sc_name[NFS4_SETCLIENTID_NAMELEN + 1];
 810         u32                             sc_prog;
 811         unsigned int                    sc_netid_len;
 812         char                            sc_netid[RPCBIND_MAXNETIDLEN + 1];
 813         unsigned int                    sc_uaddr_len;
 814         char                            sc_uaddr[RPCBIND_MAXUADDRLEN + 1];
 815         u32                             sc_cb_ident;
 816 };
 817
 818 struct nfs4_setclientid_res {
 819         u64                             clientid;
 820         nfs4_verifier                   confirm;
 821 };
 822
 823 struct nfs4_statfs_arg {
 824         const struct nfs_fh *           fh;
 825         const u32 *                     bitmask;
 826         struct nfs4_sequence_args       seq_args;
 827 };
 828
 829 struct nfs4_statfs_res {
 830         struct nfs_fsstat              *fsstat;
 831         struct nfs4_sequence_res        seq_res;
 832 };
 833
 834 struct nfs4_server_caps_arg {
 835         struct nfs_fh                  *fhandle;
 836         struct nfs4_sequence_args       seq_args;
 837 };
 838
 839 struct nfs4_server_caps_res {
 840         u32                             attr_bitmask[2];
 841         u32                             acl_bitmask;
 842         u32                             has_links;
 843         u32                             has_symlinks;
 844         struct nfs4_sequence_res        seq_res;
 845 };
 846
 847 struct nfs4_string {
 848         unsigned int len;
 849         char *data;
 850 };
 851
 852 #define NFS4_PATHNAME_MAXCOMPONENTS 512
 853 struct nfs4_pathname {
 854         unsigned int ncomponents;
 855         struct nfs4_string components[NFS4_PATHNAME_MAXCOMPONENTS];
 856 };
 857
 858 #define NFS4_FS_LOCATION_MAXSERVERS 10
 859 struct nfs4_fs_location {
 860         unsigned int nservers;
 861         struct nfs4_string servers[NFS4_FS_LOCATION_MAXSERVERS];
 862         struct nfs4_pathname rootpath;
 863 };
 864
 865 #define NFS4_FS_LOCATIONS_MAXENTRIES 10
 866 struct nfs4_fs_locations {
 867         struct nfs_fattr fattr;
 868         const struct nfs_server *server;
 869         struct nfs4_pathname fs_path;
 870         int nlocations;
 871         struct nfs4_fs_location locations[NFS4_FS_LOCATIONS_MAXENTRIES];
 872 };
 873
 874 struct nfs4_fs_locations_arg {
 875         const struct nfs_fh *dir_fh;
 876         const struct qstr *name;
 877         struct page *page;
 878         const u32 *bitmask;
 879         struct nfs4_sequence_args       seq_args;
 880 };
 881
 882 struct nfs4_fs_locations_res {
 883         struct nfs4_fs_locations       *fs_locations;
 884         struct nfs4_sequence_res        seq_res;
 885 };
 886
 887 #endif /* CONFIG_NFS_V4 */
 888
 889 struct nfstime4 {
 890         u64     seconds;
 891         u32     nseconds;
 892 };
 893
 894 #ifdef CONFIG_NFS_V4_1
 895 struct nfs_impl_id4 {
 896         u32             domain_len;
 897         char            *domain;
 898         u32             name_len;
 899         char            *name;
 900         struct nfstime4 date;
 901 };
 902
 903 #define NFS4_EXCHANGE_ID_LEN    (48)
 904 struct nfs41_exchange_id_args {
 905         struct nfs_client               *client;
 906         nfs4_verifier                   *verifier;
 907         unsigned int                    id_len;
 908         char                            id[NFS4_EXCHANGE_ID_LEN];
 909         u32                             flags;
 910 };
 911
 912 struct server_owner {
 913         uint64_t                        minor_id;
 914         uint32_t                        major_id_sz;
 915         char                            major_id[NFS4_OPAQUE_LIMIT];
 916 };
 917
 918 struct server_scope {
 919         uint32_t                        server_scope_sz;
 920         char                            server_scope[NFS4_OPAQUE_LIMIT];
 921 };
 922
 923 struct nfs41_exchange_id_res {
 924         struct nfs_client               *client;
 925         u32                             flags;
 926 };
 927
 928 struct nfs41_create_session_args {
 929         struct nfs_client              *client;
 930         uint32_t                        flags;
 931         uint32_t                        cb_program;
 932         struct nfs4_channel_attrs       fc_attrs;       /* Fore Channel */
 933         struct nfs4_channel_attrs       bc_attrs;       /* Back Channel */
 934 };
 935
 936 struct nfs41_create_session_res {
 937         struct nfs_client              *client;
 938 };
 939
 940 struct nfs41_reclaim_complete_args {
 941         /* In the future extend to include curr_fh for use with migration */
 942         unsigned char                   one_fs:1;
 943         struct nfs4_sequence_args       seq_args;
 944 };
 945
 946 struct nfs41_reclaim_complete_res {
 947         struct nfs4_sequence_res        seq_res;
 948 };
 949 #endif /* CONFIG_NFS_V4_1 */
 950
 951 struct nfs_page;
 952
 953 #define NFS_PAGEVEC_SIZE        (8U)
 954
 955 struct nfs_read_data {
 956         int                     flags;
 957         struct rpc_task         task;
 958         struct inode            *inode;
 959         struct rpc_cred         *cred;
 960         struct nfs_fattr        fattr;  /* fattr storage */
 961         struct list_head        pages;  /* Coalesced read requests */
 962         struct nfs_page         *req;   /* multi ops per nfs_page */
 963         struct page             **pagevec;
 964         unsigned int            npages; /* Max length of pagevec */
 965         struct nfs_readargs args;
 966         struct nfs_readres  res;
 967 #ifdef CONFIG_NFS_V4
 968         unsigned long           timestamp;      /* For lease renewal */
 969 #endif
 970         struct page             *page_array[NFS_PAGEVEC_SIZE];
 971 };
 972
 973 struct nfs_write_data {
 974         int                     flags;
 975         struct rpc_task         task;
 976         struct inode            *inode;
 977         struct rpc_cred         *cred;
 978         struct nfs_fattr        fattr;
 979         struct nfs_writeverf    verf;
 980         struct list_head        pages;          /* Coalesced requests we wish to flush */
 981         struct nfs_page         *req;           /* multi ops per nfs_page */
 982         struct page             **pagevec;
 983         unsigned int            npages;         /* Max length of pagevec */
 984         struct nfs_writeargs    args;           /* argument struct */
 985         struct nfs_writeres     res;            /* result struct */
 986 #ifdef CONFIG_NFS_V4
 987         unsigned long           timestamp;      /* For lease renewal */
 988 #endif
 989         struct page             *page_array[NFS_PAGEVEC_SIZE];
 990 };
 991
 992 struct nfs_access_entry;
 993
 994 /*
 995  * RPC procedure vector for NFSv2/NFSv3 demuxing
 996  */
 997 struct nfs_rpc_ops {
 998         u32     version;                /* Protocol version */
 999         const struct dentry_operations *dentry_ops;
1000         const struct inode_operations *dir_inode_ops;
1001         const struct inode_operations *file_inode_ops;
1002
1003         int     (*getroot) (struct nfs_server *, struct nfs_fh *,
1004                             struct nfs_fsinfo *);
1005         int     (*lookupfh)(struct nfs_server *, struct nfs_fh *,
1006                             struct qstr *, struct nfs_fh *,
1007                             struct nfs_fattr *);
1008         int     (*getattr) (struct nfs_server *, struct nfs_fh *,
1009                             struct nfs_fattr *);
1010         int     (*setattr) (struct dentry *, struct nfs_fattr *,
1011                             struct iattr *);
1012         int     (*lookup)  (struct inode *, struct qstr *,
1013                             struct nfs_fh *, struct nfs_fattr *);
1014         int     (*access)  (struct inode *, struct nfs_access_entry *);
1015         int     (*readlink)(struct inode *, struct page *, unsigned int,
1016                             unsigned int);
1017         int     (*create)  (struct inode *, struct dentry *,
1018                             struct iattr *, int, struct nfs_open_context *);
1019         int     (*remove)  (struct inode *, struct qstr *);
1020         void    (*unlink_setup)  (struct rpc_message *, struct inode *dir);
1021         int     (*unlink_done) (struct rpc_task *, struct inode *);
1022         int     (*rename)  (struct inode *, struct qstr *,
1023                             struct inode *, struct qstr *);
1024         void    (*rename_setup)  (struct rpc_message *msg, struct inode *dir);
1025         int     (*rename_done) (struct rpc_task *task, struct inode *old_dir, struct inode *new_dir);
1026         int     (*link)    (struct inode *, struct inode *, struct qstr *);
1027         int     (*symlink) (struct inode *, struct dentry *, struct page *,
1028                             unsigned int, struct iattr *);
1029         int     (*mkdir)   (struct inode *, struct dentry *, struct iattr *);
1030         int     (*rmdir)   (struct inode *, struct qstr *);
1031         int     (*readdir) (struct dentry *, struct rpc_cred *,
1032                             u64, struct page **, unsigned int, int);
1033         int     (*mknod)   (struct inode *, struct dentry *, struct iattr *,
1034                             dev_t);
1035         int     (*statfs)  (struct nfs_server *, struct nfs_fh *,
1036                             struct nfs_fsstat *);
1037         int     (*fsinfo)  (struct nfs_server *, struct nfs_fh *,
1038                             struct nfs_fsinfo *);
1039         int     (*pathconf) (struct nfs_server *, struct nfs_fh *,
1040                              struct nfs_pathconf *);
1041         int     (*set_capabilities)(struct nfs_server *, struct nfs_fh *);
1042         __be32 *(*decode_dirent)(struct xdr_stream *, struct nfs_entry *, struct nfs_server *, int plus);
1043         void    (*read_setup)   (struct nfs_read_data *, struct rpc_message *);
1044         int     (*read_done)  (struct rpc_task *, struct nfs_read_data *);
1045         void    (*write_setup)  (struct nfs_write_data *, struct rpc_message *);
1046         int     (*write_done)  (struct rpc_task *, struct nfs_write_data *);
1047         void    (*commit_setup) (struct nfs_write_data *, struct rpc_message *);
1048         int     (*commit_done) (struct rpc_task *, struct nfs_write_data *);
1049         int     (*lock)(struct file *, int, struct file_lock *);
1050         int     (*lock_check_bounds)(const struct file_lock *);
1051         void    (*clear_acl_cache)(struct inode *);
1052         void    (*close_context)(struct nfs_open_context *ctx, int);
1053         struct inode * (*open_context) (struct inode *dir,
1054                                 struct nfs_open_context *ctx,
1055                                 int open_flags,
1056                                 struct iattr *iattr);
1057 };
1058
1059 /*
1060  *      NFS_CALL(getattr, inode, (fattr));
1061  * into
1062  *      NFS_PROTO(inode)->getattr(fattr);
1063  */
1064 #define NFS_CALL(op, inode, args)       NFS_PROTO(inode)->op args
1065
1066 /*
1067  * Function vectors etc. for the NFS client
1068  */
1069 extern const struct nfs_rpc_ops nfs_v2_clientops;
1070 extern const struct nfs_rpc_ops nfs_v3_clientops;
1071 extern const struct nfs_rpc_ops nfs_v4_clientops;
1072 extern struct rpc_version       nfs_version2;
1073 extern struct rpc_version       nfs_version3;
1074 extern struct rpc_version       nfs_version4;
1075
1076 extern struct rpc_version       nfsacl_version3;
1077 extern struct rpc_program       nfsacl_program;
1078
1079 #endif