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         __u32                   lease_time; /* in seconds */
 116 };
 117
 118 struct nfs_fsstat {
 119         struct nfs_fattr        *fattr; /* Post-op attributes */
 120         __u64                   tbytes; /* total size in bytes */
 121         __u64                   fbytes; /* # of free bytes */
 122         __u64                   abytes; /* # of bytes available to user */
 123         __u64                   tfiles; /* # of files */
 124         __u64                   ffiles; /* # of free files */
 125         __u64                   afiles; /* # of files available to user */
 126 };
 127
 128 struct nfs2_fsstat {
 129         __u32                   tsize;  /* Server transfer size */
 130         __u32                   bsize;  /* Filesystem block size */
 131         __u32                   blocks; /* No. of "bsize" blocks on filesystem */
 132         __u32                   bfree;  /* No. of free "bsize" blocks */
 133         __u32                   bavail; /* No. of available "bsize" blocks */
 134 };
 135
 136 struct nfs_pathconf {
 137         struct nfs_fattr        *fattr; /* Post-op attributes */
 138         __u32                   max_link; /* max # of hard links */
 139         __u32                   max_namelen; /* max name length */
 140 };
 141
 142 struct nfs4_change_info {
 143         u32                     atomic;
 144         u64                     before;
 145         u64                     after;
 146 };
 147
 148 struct nfs_seqid;
 149
 150 /* nfs41 sessions channel attributes */
 151 struct nfs4_channel_attrs {
 152         u32                     headerpadsz;
 153         u32                     max_rqst_sz;
 154         u32                     max_resp_sz;
 155         u32                     max_resp_sz_cached;
 156         u32                     max_ops;
 157         u32                     max_reqs;
 158 };
 159
 160 /* nfs41 sessions slot seqid */
 161 struct nfs4_slot {
 162         u32                     seq_nr;
 163 };
 164
 165 struct nfs4_sequence_args {
 166         struct nfs4_session     *sa_session;
 167         u8                      sa_slotid;
 168         u8                      sa_cache_this;
 169 };
 170
 171 struct nfs4_sequence_res {
 172         struct nfs4_session     *sr_session;
 173         u8                      sr_slotid;      /* slot used to send request */
 174         int                     sr_status;      /* sequence operation status */
 175         unsigned long           sr_renewal_time;
 176         u32                     sr_status_flags;
 177 };
 178
 179 struct nfs4_get_lease_time_args {
 180         struct nfs4_sequence_args       la_seq_args;
 181 };
 182
 183 struct nfs4_get_lease_time_res {
 184         struct nfs_fsinfo              *lr_fsinfo;
 185         struct nfs4_sequence_res        lr_seq_res;
 186 };
 187
 188 /*
 189  * Arguments to the open call.
 190  */
 191 struct nfs_openargs {
 192         const struct nfs_fh *   fh;
 193         struct nfs_seqid *      seqid;
 194         int                     open_flags;
 195         fmode_t                 fmode;
 196         __u64                   clientid;
 197         __u64                   id;
 198         union {
 199                 struct iattr *  attrs;    /* UNCHECKED, GUARDED */
 200                 nfs4_verifier   verifier; /* EXCLUSIVE */
 201                 nfs4_stateid    delegation;             /* CLAIM_DELEGATE_CUR */
 202                 fmode_t         delegation_type;        /* CLAIM_PREVIOUS */
 203         } u;
 204         const struct qstr *     name;
 205         const struct nfs_server *server;         /* Needed for ID mapping */
 206         const u32 *             bitmask;
 207         __u32                   claim;
 208         struct nfs4_sequence_args       seq_args;
 209 };
 210
 211 struct nfs_openres {
 212         nfs4_stateid            stateid;
 213         struct nfs_fh           fh;
 214         struct nfs4_change_info cinfo;
 215         __u32                   rflags;
 216         struct nfs_fattr *      f_attr;
 217         struct nfs_fattr *      dir_attr;
 218         struct nfs_seqid *      seqid;
 219         const struct nfs_server *server;
 220         fmode_t                 delegation_type;
 221         nfs4_stateid            delegation;
 222         __u32                   do_recall;
 223         __u64                   maxsize;
 224         __u32                   attrset[NFS4_BITMAP_SIZE];
 225         struct nfs4_sequence_res        seq_res;
 226 };
 227
 228 /*
 229  * Arguments to the open_confirm call.
 230  */
 231 struct nfs_open_confirmargs {
 232         const struct nfs_fh *   fh;
 233         nfs4_stateid *          stateid;
 234         struct nfs_seqid *      seqid;
 235 };
 236
 237 struct nfs_open_confirmres {
 238         nfs4_stateid            stateid;
 239         struct nfs_seqid *      seqid;
 240 };
 241
 242 /*
 243  * Arguments to the close call.
 244  */
 245 struct nfs_closeargs {
 246         struct nfs_fh *         fh;
 247         nfs4_stateid *          stateid;
 248         struct nfs_seqid *      seqid;
 249         fmode_t                 fmode;
 250         const u32 *             bitmask;
 251         struct nfs4_sequence_args       seq_args;
 252 };
 253
 254 struct nfs_closeres {
 255         nfs4_stateid            stateid;
 256         struct nfs_fattr *      fattr;
 257         struct nfs_seqid *      seqid;
 258         const struct nfs_server *server;
 259         struct nfs4_sequence_res        seq_res;
 260 };
 261 /*
 262  *  * Arguments to the lock,lockt, and locku call.
 263  *   */
 264 struct nfs_lowner {
 265         __u64                   clientid;
 266         __u64                   id;
 267 };
 268
 269 struct nfs_lock_args {
 270         struct nfs_fh *         fh;
 271         struct file_lock *      fl;
 272         struct nfs_seqid *      lock_seqid;
 273         nfs4_stateid *          lock_stateid;
 274         struct nfs_seqid *      open_seqid;
 275         nfs4_stateid *          open_stateid;
 276         struct nfs_lowner       lock_owner;
 277         unsigned char           block : 1;
 278         unsigned char           reclaim : 1;
 279         unsigned char           new_lock_owner : 1;
 280         struct nfs4_sequence_args       seq_args;
 281 };
 282
 283 struct nfs_lock_res {
 284         nfs4_stateid            stateid;
 285         struct nfs_seqid *      lock_seqid;
 286         struct nfs_seqid *      open_seqid;
 287         struct nfs4_sequence_res        seq_res;
 288 };
 289
 290 struct nfs_locku_args {
 291         struct nfs_fh *         fh;
 292         struct file_lock *      fl;
 293         struct nfs_seqid *      seqid;
 294         nfs4_stateid *          stateid;
 295         struct nfs4_sequence_args       seq_args;
 296 };
 297
 298 struct nfs_locku_res {
 299         nfs4_stateid            stateid;
 300         struct nfs_seqid *      seqid;
 301         struct nfs4_sequence_res        seq_res;
 302 };
 303
 304 struct nfs_lockt_args {
 305         struct nfs_fh *         fh;
 306         struct file_lock *      fl;
 307         struct nfs_lowner       lock_owner;
 308         struct nfs4_sequence_args       seq_args;
 309 };
 310
 311 struct nfs_lockt_res {
 312         struct file_lock *      denied; /* LOCK, LOCKT failed */
 313         struct nfs4_sequence_res        seq_res;
 314 };
 315
 316 struct nfs4_delegreturnargs {
 317         const struct nfs_fh *fhandle;
 318         const nfs4_stateid *stateid;
 319         const u32 * bitmask;
 320         struct nfs4_sequence_args       seq_args;
 321 };
 322
 323 struct nfs4_delegreturnres {
 324         struct nfs_fattr * fattr;
 325         const struct nfs_server *server;
 326         struct nfs4_sequence_res        seq_res;
 327 };
 328
 329 /*
 330  * Arguments to the read call.
 331  */
 332 struct nfs_readargs {
 333         struct nfs_fh *         fh;
 334         struct nfs_open_context *context;
 335         __u64                   offset;
 336         __u32                   count;
 337         unsigned int            pgbase;
 338         struct page **          pages;
 339         struct nfs4_sequence_args       seq_args;
 340 };
 341
 342 struct nfs_readres {
 343         struct nfs_fattr *      fattr;
 344         __u32                   count;
 345         int                     eof;
 346         struct nfs4_sequence_res        seq_res;
 347 };
 348
 349 /*
 350  * Arguments to the write call.
 351  */
 352 struct nfs_writeargs {
 353         struct nfs_fh *         fh;
 354         struct nfs_open_context *context;
 355         __u64                   offset;
 356         __u32                   count;
 357         enum nfs3_stable_how    stable;
 358         unsigned int            pgbase;
 359         struct page **          pages;
 360         const u32 *             bitmask;
 361         struct nfs4_sequence_args       seq_args;
 362 };
 363
 364 struct nfs_writeverf {
 365         enum nfs3_stable_how    committed;
 366         __be32                  verifier[2];
 367 };
 368
 369 struct nfs_writeres {
 370         struct nfs_fattr *      fattr;
 371         struct nfs_writeverf *  verf;
 372         __u32                   count;
 373         const struct nfs_server *server;
 374         struct nfs4_sequence_res        seq_res;
 375 };
 376
 377 /*
 378  * Common arguments to the unlink call
 379  */
 380 struct nfs_removeargs {
 381         const struct nfs_fh     *fh;
 382         struct qstr             name;
 383         const u32 *             bitmask;
 384         struct nfs4_sequence_args       seq_args;
 385 };
 386
 387 struct nfs_removeres {
 388         const struct nfs_server *server;
 389         struct nfs_fattr        *dir_attr;
 390         struct nfs4_change_info cinfo;
 391         struct nfs4_sequence_res        seq_res;
 392 };
 393
 394 /*
 395  * Argument struct for decode_entry function
 396  */
 397 struct nfs_entry {
 398         __u64                   ino;
 399         __u64                   cookie,
 400                                 prev_cookie;
 401         const char *            name;
 402         unsigned int            len;
 403         int                     eof;
 404         struct nfs_fh *         fh;
 405         struct nfs_fattr *      fattr;
 406 };
 407
 408 /*
 409  * The following types are for NFSv2 only.
 410  */
 411 struct nfs_sattrargs {
 412         struct nfs_fh *         fh;
 413         struct iattr *          sattr;
 414 };
 415
 416 struct nfs_diropargs {
 417         struct nfs_fh *         fh;
 418         const char *            name;
 419         unsigned int            len;
 420 };
 421
 422 struct nfs_createargs {
 423         struct nfs_fh *         fh;
 424         const char *            name;
 425         unsigned int            len;
 426         struct iattr *          sattr;
 427 };
 428
 429 struct nfs_renameargs {
 430         struct nfs_fh *         fromfh;
 431         const char *            fromname;
 432         unsigned int            fromlen;
 433         struct nfs_fh *         tofh;
 434         const char *            toname;
 435         unsigned int            tolen;
 436 };
 437
 438 struct nfs_setattrargs {
 439         struct nfs_fh *                 fh;
 440         nfs4_stateid                    stateid;
 441         struct iattr *                  iap;
 442         const struct nfs_server *       server; /* Needed for name mapping */
 443         const u32 *                     bitmask;
 444         struct nfs4_sequence_args       seq_args;
 445 };
 446
 447 struct nfs_setaclargs {
 448         struct nfs_fh *                 fh;
 449         size_t                          acl_len;
 450         unsigned int                    acl_pgbase;
 451         struct page **                  acl_pages;
 452         struct nfs4_sequence_args       seq_args;
 453 };
 454
 455 struct nfs_setaclres {
 456         struct nfs4_sequence_res        seq_res;
 457 };
 458
 459 struct nfs_getaclargs {
 460         struct nfs_fh *                 fh;
 461         size_t                          acl_len;
 462         unsigned int                    acl_pgbase;
 463         struct page **                  acl_pages;
 464         struct nfs4_sequence_args       seq_args;
 465 };
 466
 467 struct nfs_getaclres {
 468         size_t                          acl_len;
 469         struct nfs4_sequence_res        seq_res;
 470 };
 471
 472 struct nfs_setattrres {
 473         struct nfs_fattr *              fattr;
 474         const struct nfs_server *       server;
 475         struct nfs4_sequence_res        seq_res;
 476 };
 477
 478 struct nfs_linkargs {
 479         struct nfs_fh *         fromfh;
 480         struct nfs_fh *         tofh;
 481         const char *            toname;
 482         unsigned int            tolen;
 483 };
 484
 485 struct nfs_symlinkargs {
 486         struct nfs_fh *         fromfh;
 487         const char *            fromname;
 488         unsigned int            fromlen;
 489         struct page **          pages;
 490         unsigned int            pathlen;
 491         struct iattr *          sattr;
 492 };
 493
 494 struct nfs_readdirargs {
 495         struct nfs_fh *         fh;
 496         __u32                   cookie;
 497         unsigned int            count;
 498         struct page **          pages;
 499 };
 500
 501 struct nfs3_getaclargs {
 502         struct nfs_fh *         fh;
 503         int                     mask;
 504         struct page **          pages;
 505 };
 506
 507 struct nfs3_setaclargs {
 508         struct inode *          inode;
 509         int                     mask;
 510         struct posix_acl *      acl_access;
 511         struct posix_acl *      acl_default;
 512         size_t                  len;
 513         unsigned int            npages;
 514         struct page **          pages;
 515 };
 516
 517 struct nfs_diropok {
 518         struct nfs_fh *         fh;
 519         struct nfs_fattr *      fattr;
 520 };
 521
 522 struct nfs_readlinkargs {
 523         struct nfs_fh *         fh;
 524         unsigned int            pgbase;
 525         unsigned int            pglen;
 526         struct page **          pages;
 527 };
 528
 529 struct nfs3_sattrargs {
 530         struct nfs_fh *         fh;
 531         struct iattr *          sattr;
 532         unsigned int            guard;
 533         struct timespec         guardtime;
 534 };
 535
 536 struct nfs3_diropargs {
 537         struct nfs_fh *         fh;
 538         const char *            name;
 539         unsigned int            len;
 540 };
 541
 542 struct nfs3_accessargs {
 543         struct nfs_fh *         fh;
 544         __u32                   access;
 545 };
 546
 547 struct nfs3_createargs {
 548         struct nfs_fh *         fh;
 549         const char *            name;
 550         unsigned int            len;
 551         struct iattr *          sattr;
 552         enum nfs3_createmode    createmode;
 553         __be32                  verifier[2];
 554 };
 555
 556 struct nfs3_mkdirargs {
 557         struct nfs_fh *         fh;
 558         const char *            name;
 559         unsigned int            len;
 560         struct iattr *          sattr;
 561 };
 562
 563 struct nfs3_symlinkargs {
 564         struct nfs_fh *         fromfh;
 565         const char *            fromname;
 566         unsigned int            fromlen;
 567         struct page **          pages;
 568         unsigned int            pathlen;
 569         struct iattr *          sattr;
 570 };
 571
 572 struct nfs3_mknodargs {
 573         struct nfs_fh *         fh;
 574         const char *            name;
 575         unsigned int            len;
 576         enum nfs3_ftype         type;
 577         struct iattr *          sattr;
 578         dev_t                   rdev;
 579 };
 580
 581 struct nfs3_renameargs {
 582         struct nfs_fh *         fromfh;
 583         const char *            fromname;
 584         unsigned int            fromlen;
 585         struct nfs_fh *         tofh;
 586         const char *            toname;
 587         unsigned int            tolen;
 588 };
 589
 590 struct nfs3_linkargs {
 591         struct nfs_fh *         fromfh;
 592         struct nfs_fh *         tofh;
 593         const char *            toname;
 594         unsigned int            tolen;
 595 };
 596
 597 struct nfs3_readdirargs {
 598         struct nfs_fh *         fh;
 599         __u64                   cookie;
 600         __be32                  verf[2];
 601         int                     plus;
 602         unsigned int            count;
 603         struct page **          pages;
 604 };
 605
 606 struct nfs3_diropres {
 607         struct nfs_fattr *      dir_attr;
 608         struct nfs_fh *         fh;
 609         struct nfs_fattr *      fattr;
 610 };
 611
 612 struct nfs3_accessres {
 613         struct nfs_fattr *      fattr;
 614         __u32                   access;
 615 };
 616
 617 struct nfs3_readlinkargs {
 618         struct nfs_fh *         fh;
 619         unsigned int            pgbase;
 620         unsigned int            pglen;
 621         struct page **          pages;
 622 };
 623
 624 struct nfs3_renameres {
 625         struct nfs_fattr *      fromattr;
 626         struct nfs_fattr *      toattr;
 627 };
 628
 629 struct nfs3_linkres {
 630         struct nfs_fattr *      dir_attr;
 631         struct nfs_fattr *      fattr;
 632 };
 633
 634 struct nfs3_readdirres {
 635         struct nfs_fattr *      dir_attr;
 636         __be32 *                verf;
 637         int                     plus;
 638 };
 639
 640 struct nfs3_getaclres {
 641         struct nfs_fattr *      fattr;
 642         int                     mask;
 643         unsigned int            acl_access_count;
 644         unsigned int            acl_default_count;
 645         struct posix_acl *      acl_access;
 646         struct posix_acl *      acl_default;
 647 };
 648
 649 #ifdef CONFIG_NFS_V4
 650
 651 typedef u64 clientid4;
 652
 653 struct nfs4_accessargs {
 654         const struct nfs_fh *           fh;
 655         const u32 *                     bitmask;
 656         u32                             access;
 657         struct nfs4_sequence_args       seq_args;
 658 };
 659
 660 struct nfs4_accessres {
 661         const struct nfs_server *       server;
 662         struct nfs_fattr *              fattr;
 663         u32                             supported;
 664         u32                             access;
 665         struct nfs4_sequence_res        seq_res;
 666 };
 667
 668 struct nfs4_create_arg {
 669         u32                             ftype;
 670         union {
 671                 struct {
 672                         struct page **  pages;
 673                         unsigned int    len;
 674                 } symlink;   /* NF4LNK */
 675                 struct {
 676                         u32             specdata1;
 677                         u32             specdata2;
 678                 } device;    /* NF4BLK, NF4CHR */
 679         } u;
 680         const struct qstr *             name;
 681         const struct nfs_server *       server;
 682         const struct iattr *            attrs;
 683         const struct nfs_fh *           dir_fh;
 684         const u32 *                     bitmask;
 685         struct nfs4_sequence_args       seq_args;
 686 };
 687
 688 struct nfs4_create_res {
 689         const struct nfs_server *       server;
 690         struct nfs_fh *                 fh;
 691         struct nfs_fattr *              fattr;
 692         struct nfs4_change_info         dir_cinfo;
 693         struct nfs_fattr *              dir_fattr;
 694         struct nfs4_sequence_res        seq_res;
 695 };
 696
 697 struct nfs4_fsinfo_arg {
 698         const struct nfs_fh *           fh;
 699         const u32 *                     bitmask;
 700         struct nfs4_sequence_args       seq_args;
 701 };
 702
 703 struct nfs4_fsinfo_res {
 704         struct nfs_fsinfo              *fsinfo;
 705         struct nfs4_sequence_res        seq_res;
 706 };
 707
 708 struct nfs4_getattr_arg {
 709         const struct nfs_fh *           fh;
 710         const u32 *                     bitmask;
 711         struct nfs4_sequence_args       seq_args;
 712 };
 713
 714 struct nfs4_getattr_res {
 715         const struct nfs_server *       server;
 716         struct nfs_fattr *              fattr;
 717         struct nfs4_sequence_res        seq_res;
 718 };
 719
 720 struct nfs4_link_arg {
 721         const struct nfs_fh *           fh;
 722         const struct nfs_fh *           dir_fh;
 723         const struct qstr *             name;
 724         const u32 *                     bitmask;
 725         struct nfs4_sequence_args       seq_args;
 726 };
 727
 728 struct nfs4_link_res {
 729         const struct nfs_server *       server;
 730         struct nfs_fattr *              fattr;
 731         struct nfs4_change_info         cinfo;
 732         struct nfs_fattr *              dir_attr;
 733         struct nfs4_sequence_res        seq_res;
 734 };
 735
 736
 737 struct nfs4_lookup_arg {
 738         const struct nfs_fh *           dir_fh;
 739         const struct qstr *             name;
 740         const u32 *                     bitmask;
 741         struct nfs4_sequence_args       seq_args;
 742 };
 743
 744 struct nfs4_lookup_res {
 745         const struct nfs_server *       server;
 746         struct nfs_fattr *              fattr;
 747         struct nfs_fh *                 fh;
 748         struct nfs4_sequence_res        seq_res;
 749 };
 750
 751 struct nfs4_lookup_root_arg {
 752         const u32 *                     bitmask;
 753         struct nfs4_sequence_args       seq_args;
 754 };
 755
 756 struct nfs4_pathconf_arg {
 757         const struct nfs_fh *           fh;
 758         const u32 *                     bitmask;
 759         struct nfs4_sequence_args       seq_args;
 760 };
 761
 762 struct nfs4_pathconf_res {
 763         struct nfs_pathconf            *pathconf;
 764         struct nfs4_sequence_res        seq_res;
 765 };
 766
 767 struct nfs4_readdir_arg {
 768         const struct nfs_fh *           fh;
 769         u64                             cookie;
 770         nfs4_verifier                   verifier;
 771         u32                             count;
 772         struct page **                  pages;  /* zero-copy data */
 773         unsigned int                    pgbase; /* zero-copy data */
 774         const u32 *                     bitmask;
 775         struct nfs4_sequence_args       seq_args;
 776 };
 777
 778 struct nfs4_readdir_res {
 779         nfs4_verifier                   verifier;
 780         unsigned int                    pgbase;
 781         struct nfs4_sequence_res        seq_res;
 782 };
 783
 784 struct nfs4_readlink {
 785         const struct nfs_fh *           fh;
 786         unsigned int                    pgbase;
 787         unsigned int                    pglen;   /* zero-copy data */
 788         struct page **                  pages;   /* zero-copy data */
 789         struct nfs4_sequence_args       seq_args;
 790 };
 791
 792 struct nfs4_readlink_res {
 793         struct nfs4_sequence_res        seq_res;
 794 };
 795
 796 struct nfs4_rename_arg {
 797         const struct nfs_fh *           old_dir;
 798         const struct nfs_fh *           new_dir;
 799         const struct qstr *             old_name;
 800         const struct qstr *             new_name;
 801         const u32 *                     bitmask;
 802         struct nfs4_sequence_args       seq_args;
 803 };
 804
 805 struct nfs4_rename_res {
 806         const struct nfs_server *       server;
 807         struct nfs4_change_info         old_cinfo;
 808         struct nfs_fattr *              old_fattr;
 809         struct nfs4_change_info         new_cinfo;
 810         struct nfs_fattr *              new_fattr;
 811         struct nfs4_sequence_res        seq_res;
 812 };
 813
 814 #define NFS4_SETCLIENTID_NAMELEN        (127)
 815 struct nfs4_setclientid {
 816         const nfs4_verifier *           sc_verifier;
 817         unsigned int                    sc_name_len;
 818         char                            sc_name[NFS4_SETCLIENTID_NAMELEN + 1];
 819         u32                             sc_prog;
 820         unsigned int                    sc_netid_len;
 821         char                            sc_netid[RPCBIND_MAXNETIDLEN + 1];
 822         unsigned int                    sc_uaddr_len;
 823         char                            sc_uaddr[RPCBIND_MAXUADDRLEN + 1];
 824         u32                             sc_cb_ident;
 825 };
 826
 827 struct nfs4_setclientid_res {
 828         u64                             clientid;
 829         nfs4_verifier                   confirm;
 830 };
 831
 832 struct nfs4_statfs_arg {
 833         const struct nfs_fh *           fh;
 834         const u32 *                     bitmask;
 835         struct nfs4_sequence_args       seq_args;
 836 };
 837
 838 struct nfs4_statfs_res {
 839         struct nfs_fsstat              *fsstat;
 840         struct nfs4_sequence_res        seq_res;
 841 };
 842
 843 struct nfs4_server_caps_arg {
 844         struct nfs_fh                  *fhandle;
 845         struct nfs4_sequence_args       seq_args;
 846 };
 847
 848 struct nfs4_server_caps_res {
 849         u32                             attr_bitmask[2];
 850         u32                             acl_bitmask;
 851         u32                             has_links;
 852         u32                             has_symlinks;
 853         struct nfs4_sequence_res        seq_res;
 854 };
 855
 856 struct nfs4_string {
 857         unsigned int len;
 858         char *data;
 859 };
 860
 861 #define NFS4_PATHNAME_MAXCOMPONENTS 512
 862 struct nfs4_pathname {
 863         unsigned int ncomponents;
 864         struct nfs4_string components[NFS4_PATHNAME_MAXCOMPONENTS];
 865 };
 866
 867 #define NFS4_FS_LOCATION_MAXSERVERS 10
 868 struct nfs4_fs_location {
 869         unsigned int nservers;
 870         struct nfs4_string servers[NFS4_FS_LOCATION_MAXSERVERS];
 871         struct nfs4_pathname rootpath;
 872 };
 873
 874 #define NFS4_FS_LOCATIONS_MAXENTRIES 10
 875 struct nfs4_fs_locations {
 876         struct nfs_fattr fattr;
 877         const struct nfs_server *server;
 878         struct nfs4_pathname fs_path;
 879         int nlocations;
 880         struct nfs4_fs_location locations[NFS4_FS_LOCATIONS_MAXENTRIES];
 881 };
 882
 883 struct nfs4_fs_locations_arg {
 884         const struct nfs_fh *dir_fh;
 885         const struct qstr *name;
 886         struct page *page;
 887         const u32 *bitmask;
 888         struct nfs4_sequence_args       seq_args;
 889 };
 890
 891 struct nfs4_fs_locations_res {
 892         struct nfs4_fs_locations       *fs_locations;
 893         struct nfs4_sequence_res        seq_res;
 894 };
 895
 896 #endif /* CONFIG_NFS_V4 */
 897
 898 struct nfstime4 {
 899         u64     seconds;
 900         u32     nseconds;
 901 };
 902
 903 #ifdef CONFIG_NFS_V4_1
 904 struct nfs_impl_id4 {
 905         u32             domain_len;
 906         char            *domain;
 907         u32             name_len;
 908         char            *name;
 909         struct nfstime4 date;
 910 };
 911
 912 #define NFS4_EXCHANGE_ID_LEN    (48)
 913 struct nfs41_exchange_id_args {
 914         struct nfs_client               *client;
 915         nfs4_verifier                   *verifier;
 916         unsigned int                    id_len;
 917         char                            id[NFS4_EXCHANGE_ID_LEN];
 918         u32                             flags;
 919 };
 920
 921 struct server_owner {
 922         uint64_t                        minor_id;
 923         uint32_t                        major_id_sz;
 924         char                            major_id[NFS4_OPAQUE_LIMIT];
 925 };
 926
 927 struct server_scope {
 928         uint32_t                        server_scope_sz;
 929         char                            server_scope[NFS4_OPAQUE_LIMIT];
 930 };
 931
 932 struct nfs41_exchange_id_res {
 933         struct nfs_client               *client;
 934         u32                             flags;
 935 };
 936
 937 struct nfs41_create_session_args {
 938         struct nfs_client              *client;
 939         uint32_t                        flags;
 940         uint32_t                        cb_program;
 941         struct nfs4_channel_attrs       fc_attrs;       /* Fore Channel */
 942         struct nfs4_channel_attrs       bc_attrs;       /* Back Channel */
 943 };
 944
 945 struct nfs41_create_session_res {
 946         struct nfs_client              *client;
 947 };
 948
 949 struct nfs41_reclaim_complete_args {
 950         /* In the future extend to include curr_fh for use with migration */
 951         unsigned char                   one_fs:1;
 952         struct nfs4_sequence_args       seq_args;
 953 };
 954
 955 struct nfs41_reclaim_complete_res {
 956         struct nfs4_sequence_res        seq_res;
 957 };
 958 #endif /* CONFIG_NFS_V4_1 */
 959
 960 struct nfs_page;
 961
 962 #define NFS_PAGEVEC_SIZE        (8U)
 963
 964 struct nfs_read_data {
 965         int                     flags;
 966         struct rpc_task         task;
 967         struct inode            *inode;
 968         struct rpc_cred         *cred;
 969         struct nfs_fattr        fattr;  /* fattr storage */
 970         struct list_head        pages;  /* Coalesced read requests */
 971         struct nfs_page         *req;   /* multi ops per nfs_page */
 972         struct page             **pagevec;
 973         unsigned int            npages; /* Max length of pagevec */
 974         struct nfs_readargs args;
 975         struct nfs_readres  res;
 976 #ifdef CONFIG_NFS_V4
 977         unsigned long           timestamp;      /* For lease renewal */
 978 #endif
 979         struct page             *page_array[NFS_PAGEVEC_SIZE];
 980 };
 981
 982 struct nfs_write_data {
 983         int                     flags;
 984         struct rpc_task         task;
 985         struct inode            *inode;
 986         struct rpc_cred         *cred;
 987         struct nfs_fattr        fattr;
 988         struct nfs_writeverf    verf;
 989         struct list_head        pages;          /* Coalesced requests we wish to flush */
 990         struct nfs_page         *req;           /* multi ops per nfs_page */
 991         struct page             **pagevec;
 992         unsigned int            npages;         /* Max length of pagevec */
 993         struct nfs_writeargs    args;           /* argument struct */
 994         struct nfs_writeres     res;            /* result struct */
 995 #ifdef CONFIG_NFS_V4
 996         unsigned long           timestamp;      /* For lease renewal */
 997 #endif
 998         struct page             *page_array[NFS_PAGEVEC_SIZE];
 999 };
1000
1001 struct nfs_access_entry;
1002
1003 /*
1004  * RPC procedure vector for NFSv2/NFSv3 demuxing
1005  */
1006 struct nfs_rpc_ops {
1007         u32     version;                /* Protocol version */
1008         const struct dentry_operations *dentry_ops;
1009         const struct inode_operations *dir_inode_ops;
1010         const struct inode_operations *file_inode_ops;
1011
1012         int     (*getroot) (struct nfs_server *, struct nfs_fh *,
1013                             struct nfs_fsinfo *);
1014         int     (*lookupfh)(struct nfs_server *, struct nfs_fh *,
1015                             struct qstr *, struct nfs_fh *,
1016                             struct nfs_fattr *);
1017         int     (*getattr) (struct nfs_server *, struct nfs_fh *,
1018                             struct nfs_fattr *);
1019         int     (*setattr) (struct dentry *, struct nfs_fattr *,
1020                             struct iattr *);
1021         int     (*lookup)  (struct inode *, struct qstr *,
1022                             struct nfs_fh *, struct nfs_fattr *);
1023         int     (*access)  (struct inode *, struct nfs_access_entry *);
1024         int     (*readlink)(struct inode *, struct page *, unsigned int,
1025                             unsigned int);
1026         int     (*create)  (struct inode *, struct dentry *,
1027                             struct iattr *, int, struct nameidata *);
1028         int     (*remove)  (struct inode *, struct qstr *);
1029         void    (*unlink_setup)  (struct rpc_message *, struct inode *dir);
1030         int     (*unlink_done) (struct rpc_task *, struct inode *);
1031         int     (*rename)  (struct inode *, struct qstr *,
1032                             struct inode *, struct qstr *);
1033         int     (*link)    (struct inode *, struct inode *, struct qstr *);
1034         int     (*symlink) (struct inode *, struct dentry *, struct page *,
1035                             unsigned int, struct iattr *);
1036         int     (*mkdir)   (struct inode *, struct dentry *, struct iattr *);
1037         int     (*rmdir)   (struct inode *, struct qstr *);
1038         int     (*readdir) (struct dentry *, struct rpc_cred *,
1039                             u64, struct page *, unsigned int, int);
1040         int     (*mknod)   (struct inode *, struct dentry *, struct iattr *,
1041                             dev_t);
1042         int     (*statfs)  (struct nfs_server *, struct nfs_fh *,
1043                             struct nfs_fsstat *);
1044         int     (*fsinfo)  (struct nfs_server *, struct nfs_fh *,
1045                             struct nfs_fsinfo *);
1046         int     (*pathconf) (struct nfs_server *, struct nfs_fh *,
1047                              struct nfs_pathconf *);
1048         int     (*set_capabilities)(struct nfs_server *, struct nfs_fh *);
1049         __be32 *(*decode_dirent)(__be32 *, struct nfs_entry *, int plus);
1050         void    (*read_setup)   (struct nfs_read_data *, struct rpc_message *);
1051         int     (*read_done)  (struct rpc_task *, struct nfs_read_data *);
1052         void    (*write_setup)  (struct nfs_write_data *, struct rpc_message *);
1053         int     (*write_done)  (struct rpc_task *, struct nfs_write_data *);
1054         void    (*commit_setup) (struct nfs_write_data *, struct rpc_message *);
1055         int     (*commit_done) (struct rpc_task *, struct nfs_write_data *);
1056         int     (*lock)(struct file *, int, struct file_lock *);
1057         int     (*lock_check_bounds)(const struct file_lock *);
1058         void    (*clear_acl_cache)(struct inode *);
1059         void    (*close_context)(struct nfs_open_context *ctx, int);
1060 };
1061
1062 /*
1063  *      NFS_CALL(getattr, inode, (fattr));
1064  * into
1065  *      NFS_PROTO(inode)->getattr(fattr);
1066  */
1067 #define NFS_CALL(op, inode, args)       NFS_PROTO(inode)->op args
1068
1069 /*
1070  * Function vectors etc. for the NFS client
1071  */
1072 extern const struct nfs_rpc_ops nfs_v2_clientops;
1073 extern const struct nfs_rpc_ops nfs_v3_clientops;
1074 extern const struct nfs_rpc_ops nfs_v4_clientops;
1075 extern struct rpc_version       nfs_version2;
1076 extern struct rpc_version       nfs_version3;
1077 extern struct rpc_version       nfs_version4;
1078
1079 extern struct rpc_version       nfsacl_version3;
1080 extern struct rpc_program       nfsacl_program;
1081
1082 #endif