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 {
 200                         struct iattr *  attrs;    /* UNCHECKED, GUARDED */
 201                         nfs4_verifier   verifier; /* EXCLUSIVE */
 202                 };
 203                 nfs4_stateid    delegation;             /* CLAIM_DELEGATE_CUR */
 204                 fmode_t         delegation_type;        /* CLAIM_PREVIOUS */
 205         } u;
 206         const struct qstr *     name;
 207         const struct nfs_server *server;         /* Needed for ID mapping */
 208         const u32 *             bitmask;
 209         __u32                   claim;
 210         struct nfs4_sequence_args       seq_args;
 211 };
 212
 213 struct nfs_openres {
 214         nfs4_stateid            stateid;
 215         struct nfs_fh           fh;
 216         struct nfs4_change_info cinfo;
 217         __u32                   rflags;
 218         struct nfs_fattr *      f_attr;
 219         struct nfs_fattr *      dir_attr;
 220         struct nfs_seqid *      seqid;
 221         const struct nfs_server *server;
 222         fmode_t                 delegation_type;
 223         nfs4_stateid            delegation;
 224         __u32                   do_recall;
 225         __u64                   maxsize;
 226         __u32                   attrset[NFS4_BITMAP_SIZE];
 227         struct nfs4_sequence_res        seq_res;
 228 };
 229
 230 /*
 231  * Arguments to the open_confirm call.
 232  */
 233 struct nfs_open_confirmargs {
 234         const struct nfs_fh *   fh;
 235         nfs4_stateid *          stateid;
 236         struct nfs_seqid *      seqid;
 237 };
 238
 239 struct nfs_open_confirmres {
 240         nfs4_stateid            stateid;
 241         struct nfs_seqid *      seqid;
 242 };
 243
 244 /*
 245  * Arguments to the close call.
 246  */
 247 struct nfs_closeargs {
 248         struct nfs_fh *         fh;
 249         nfs4_stateid *          stateid;
 250         struct nfs_seqid *      seqid;
 251         fmode_t                 fmode;
 252         const u32 *             bitmask;
 253         struct nfs4_sequence_args       seq_args;
 254 };
 255
 256 struct nfs_closeres {
 257         nfs4_stateid            stateid;
 258         struct nfs_fattr *      fattr;
 259         struct nfs_seqid *      seqid;
 260         const struct nfs_server *server;
 261         struct nfs4_sequence_res        seq_res;
 262 };
 263 /*
 264  *  * Arguments to the lock,lockt, and locku call.
 265  *   */
 266 struct nfs_lowner {
 267         __u64                   clientid;
 268         __u64                   id;
 269 };
 270
 271 struct nfs_lock_args {
 272         struct nfs_fh *         fh;
 273         struct file_lock *      fl;
 274         struct nfs_seqid *      lock_seqid;
 275         nfs4_stateid *          lock_stateid;
 276         struct nfs_seqid *      open_seqid;
 277         nfs4_stateid *          open_stateid;
 278         struct nfs_lowner       lock_owner;
 279         unsigned char           block : 1;
 280         unsigned char           reclaim : 1;
 281         unsigned char           new_lock_owner : 1;
 282         struct nfs4_sequence_args       seq_args;
 283 };
 284
 285 struct nfs_lock_res {
 286         nfs4_stateid            stateid;
 287         struct nfs_seqid *      lock_seqid;
 288         struct nfs_seqid *      open_seqid;
 289         struct nfs4_sequence_res        seq_res;
 290 };
 291
 292 struct nfs_locku_args {
 293         struct nfs_fh *         fh;
 294         struct file_lock *      fl;
 295         struct nfs_seqid *      seqid;
 296         nfs4_stateid *          stateid;
 297         struct nfs4_sequence_args       seq_args;
 298 };
 299
 300 struct nfs_locku_res {
 301         nfs4_stateid            stateid;
 302         struct nfs_seqid *      seqid;
 303         struct nfs4_sequence_res        seq_res;
 304 };
 305
 306 struct nfs_lockt_args {
 307         struct nfs_fh *         fh;
 308         struct file_lock *      fl;
 309         struct nfs_lowner       lock_owner;
 310         struct nfs4_sequence_args       seq_args;
 311 };
 312
 313 struct nfs_lockt_res {
 314         struct file_lock *      denied; /* LOCK, LOCKT failed */
 315         struct nfs4_sequence_res        seq_res;
 316 };
 317
 318 struct nfs_release_lockowner_args {
 319         struct nfs_lowner       lock_owner;
 320 };
 321
 322 struct nfs4_delegreturnargs {
 323         const struct nfs_fh *fhandle;
 324         const nfs4_stateid *stateid;
 325         const u32 * bitmask;
 326         struct nfs4_sequence_args       seq_args;
 327 };
 328
 329 struct nfs4_delegreturnres {
 330         struct nfs_fattr * fattr;
 331         const struct nfs_server *server;
 332         struct nfs4_sequence_res        seq_res;
 333 };
 334
 335 /*
 336  * Arguments to the read call.
 337  */
 338 struct nfs_readargs {
 339         struct nfs_fh *         fh;
 340         struct nfs_open_context *context;
 341         struct nfs_lock_context *lock_context;
 342         __u64                   offset;
 343         __u32                   count;
 344         unsigned int            pgbase;
 345         struct page **          pages;
 346         struct nfs4_sequence_args       seq_args;
 347 };
 348
 349 struct nfs_readres {
 350         struct nfs_fattr *      fattr;
 351         __u32                   count;
 352         int                     eof;
 353         struct nfs4_sequence_res        seq_res;
 354 };
 355
 356 /*
 357  * Arguments to the write call.
 358  */
 359 struct nfs_writeargs {
 360         struct nfs_fh *         fh;
 361         struct nfs_open_context *context;
 362         struct nfs_lock_context *lock_context;
 363         __u64                   offset;
 364         __u32                   count;
 365         enum nfs3_stable_how    stable;
 366         unsigned int            pgbase;
 367         struct page **          pages;
 368         const u32 *             bitmask;
 369         struct nfs4_sequence_args       seq_args;
 370 };
 371
 372 struct nfs_writeverf {
 373         enum nfs3_stable_how    committed;
 374         __be32                  verifier[2];
 375 };
 376
 377 struct nfs_writeres {
 378         struct nfs_fattr *      fattr;
 379         struct nfs_writeverf *  verf;
 380         __u32                   count;
 381         const struct nfs_server *server;
 382         struct nfs4_sequence_res        seq_res;
 383 };
 384
 385 /*
 386  * Common arguments to the unlink call
 387  */
 388 struct nfs_removeargs {
 389         const struct nfs_fh     *fh;
 390         struct qstr             name;
 391         const u32 *             bitmask;
 392         struct nfs4_sequence_args       seq_args;
 393 };
 394
 395 struct nfs_removeres {
 396         const struct nfs_server *server;
 397         struct nfs_fattr        *dir_attr;
 398         struct nfs4_change_info cinfo;
 399         struct nfs4_sequence_res        seq_res;
 400 };
 401
 402 /*
 403  * Argument struct for decode_entry function
 404  */
 405 struct nfs_entry {
 406         __u64                   ino;
 407         __u64                   cookie,
 408                                 prev_cookie;
 409         const char *            name;
 410         unsigned int            len;
 411         int                     eof;
 412         struct nfs_fh *         fh;
 413         struct nfs_fattr *      fattr;
 414 };
 415
 416 /*
 417  * The following types are for NFSv2 only.
 418  */
 419 struct nfs_sattrargs {
 420         struct nfs_fh *         fh;
 421         struct iattr *          sattr;
 422 };
 423
 424 struct nfs_diropargs {
 425         struct nfs_fh *         fh;
 426         const char *            name;
 427         unsigned int            len;
 428 };
 429
 430 struct nfs_createargs {
 431         struct nfs_fh *         fh;
 432         const char *            name;
 433         unsigned int            len;
 434         struct iattr *          sattr;
 435 };
 436
 437 struct nfs_renameargs {
 438         struct nfs_fh *         fromfh;
 439         const char *            fromname;
 440         unsigned int            fromlen;
 441         struct nfs_fh *         tofh;
 442         const char *            toname;
 443         unsigned int            tolen;
 444 };
 445
 446 struct nfs_setattrargs {
 447         struct nfs_fh *                 fh;
 448         nfs4_stateid                    stateid;
 449         struct iattr *                  iap;
 450         const struct nfs_server *       server; /* Needed for name mapping */
 451         const u32 *                     bitmask;
 452         struct nfs4_sequence_args       seq_args;
 453 };
 454
 455 struct nfs_setaclargs {
 456         struct nfs_fh *                 fh;
 457         size_t                          acl_len;
 458         unsigned int                    acl_pgbase;
 459         struct page **                  acl_pages;
 460         struct nfs4_sequence_args       seq_args;
 461 };
 462
 463 struct nfs_setaclres {
 464         struct nfs4_sequence_res        seq_res;
 465 };
 466
 467 struct nfs_getaclargs {
 468         struct nfs_fh *                 fh;
 469         size_t                          acl_len;
 470         unsigned int                    acl_pgbase;
 471         struct page **                  acl_pages;
 472         struct nfs4_sequence_args       seq_args;
 473 };
 474
 475 struct nfs_getaclres {
 476         size_t                          acl_len;
 477         struct nfs4_sequence_res        seq_res;
 478 };
 479
 480 struct nfs_setattrres {
 481         struct nfs_fattr *              fattr;
 482         const struct nfs_server *       server;
 483         struct nfs4_sequence_res        seq_res;
 484 };
 485
 486 struct nfs_linkargs {
 487         struct nfs_fh *         fromfh;
 488         struct nfs_fh *         tofh;
 489         const char *            toname;
 490         unsigned int            tolen;
 491 };
 492
 493 struct nfs_symlinkargs {
 494         struct nfs_fh *         fromfh;
 495         const char *            fromname;
 496         unsigned int            fromlen;
 497         struct page **          pages;
 498         unsigned int            pathlen;
 499         struct iattr *          sattr;
 500 };
 501
 502 struct nfs_readdirargs {
 503         struct nfs_fh *         fh;
 504         __u32                   cookie;
 505         unsigned int            count;
 506         struct page **          pages;
 507 };
 508
 509 struct nfs3_getaclargs {
 510         struct nfs_fh *         fh;
 511         int                     mask;
 512         struct page **          pages;
 513 };
 514
 515 struct nfs3_setaclargs {
 516         struct inode *          inode;
 517         int                     mask;
 518         struct posix_acl *      acl_access;
 519         struct posix_acl *      acl_default;
 520         size_t                  len;
 521         unsigned int            npages;
 522         struct page **          pages;
 523 };
 524
 525 struct nfs_diropok {
 526         struct nfs_fh *         fh;
 527         struct nfs_fattr *      fattr;
 528 };
 529
 530 struct nfs_readlinkargs {
 531         struct nfs_fh *         fh;
 532         unsigned int            pgbase;
 533         unsigned int            pglen;
 534         struct page **          pages;
 535 };
 536
 537 struct nfs3_sattrargs {
 538         struct nfs_fh *         fh;
 539         struct iattr *          sattr;
 540         unsigned int            guard;
 541         struct timespec         guardtime;
 542 };
 543
 544 struct nfs3_diropargs {
 545         struct nfs_fh *         fh;
 546         const char *            name;
 547         unsigned int            len;
 548 };
 549
 550 struct nfs3_accessargs {
 551         struct nfs_fh *         fh;
 552         __u32                   access;
 553 };
 554
 555 struct nfs3_createargs {
 556         struct nfs_fh *         fh;
 557         const char *            name;
 558         unsigned int            len;
 559         struct iattr *          sattr;
 560         enum nfs3_createmode    createmode;
 561         __be32                  verifier[2];
 562 };
 563
 564 struct nfs3_mkdirargs {
 565         struct nfs_fh *         fh;
 566         const char *            name;
 567         unsigned int            len;
 568         struct iattr *          sattr;
 569 };
 570
 571 struct nfs3_symlinkargs {
 572         struct nfs_fh *         fromfh;
 573         const char *            fromname;
 574         unsigned int            fromlen;
 575         struct page **          pages;
 576         unsigned int            pathlen;
 577         struct iattr *          sattr;
 578 };
 579
 580 struct nfs3_mknodargs {
 581         struct nfs_fh *         fh;
 582         const char *            name;
 583         unsigned int            len;
 584         enum nfs3_ftype         type;
 585         struct iattr *          sattr;
 586         dev_t                   rdev;
 587 };
 588
 589 struct nfs3_renameargs {
 590         struct nfs_fh *         fromfh;
 591         const char *            fromname;
 592         unsigned int            fromlen;
 593         struct nfs_fh *         tofh;
 594         const char *            toname;
 595         unsigned int            tolen;
 596 };
 597
 598 struct nfs3_linkargs {
 599         struct nfs_fh *         fromfh;
 600         struct nfs_fh *         tofh;
 601         const char *            toname;
 602         unsigned int            tolen;
 603 };
 604
 605 struct nfs3_readdirargs {
 606         struct nfs_fh *         fh;
 607         __u64                   cookie;
 608         __be32                  verf[2];
 609         int                     plus;
 610         unsigned int            count;
 611         struct page **          pages;
 612 };
 613
 614 struct nfs3_diropres {
 615         struct nfs_fattr *      dir_attr;
 616         struct nfs_fh *         fh;
 617         struct nfs_fattr *      fattr;
 618 };
 619
 620 struct nfs3_accessres {
 621         struct nfs_fattr *      fattr;
 622         __u32                   access;
 623 };
 624
 625 struct nfs3_readlinkargs {
 626         struct nfs_fh *         fh;
 627         unsigned int            pgbase;
 628         unsigned int            pglen;
 629         struct page **          pages;
 630 };
 631
 632 struct nfs3_renameres {
 633         struct nfs_fattr *      fromattr;
 634         struct nfs_fattr *      toattr;
 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         struct nfs4_sequence_args       seq_args;
 784 };
 785
 786 struct nfs4_readdir_res {
 787         nfs4_verifier                   verifier;
 788         unsigned int                    pgbase;
 789         struct nfs4_sequence_res        seq_res;
 790 };
 791
 792 struct nfs4_readlink {
 793         const struct nfs_fh *           fh;
 794         unsigned int                    pgbase;
 795         unsigned int                    pglen;   /* zero-copy data */
 796         struct page **                  pages;   /* zero-copy data */
 797         struct nfs4_sequence_args       seq_args;
 798 };
 799
 800 struct nfs4_readlink_res {
 801         struct nfs4_sequence_res        seq_res;
 802 };
 803
 804 struct nfs4_rename_arg {
 805         const struct nfs_fh *           old_dir;
 806         const struct nfs_fh *           new_dir;
 807         const struct qstr *             old_name;
 808         const struct qstr *             new_name;
 809         const u32 *                     bitmask;
 810         struct nfs4_sequence_args       seq_args;
 811 };
 812
 813 struct nfs4_rename_res {
 814         const struct nfs_server *       server;
 815         struct nfs4_change_info         old_cinfo;
 816         struct nfs_fattr *              old_fattr;
 817         struct nfs4_change_info         new_cinfo;
 818         struct nfs_fattr *              new_fattr;
 819         struct nfs4_sequence_res        seq_res;
 820 };
 821
 822 #define NFS4_SETCLIENTID_NAMELEN        (127)
 823 struct nfs4_setclientid {
 824         const nfs4_verifier *           sc_verifier;
 825         unsigned int                    sc_name_len;
 826         char                            sc_name[NFS4_SETCLIENTID_NAMELEN + 1];
 827         u32                             sc_prog;
 828         unsigned int                    sc_netid_len;
 829         char                            sc_netid[RPCBIND_MAXNETIDLEN + 1];
 830         unsigned int                    sc_uaddr_len;
 831         char                            sc_uaddr[RPCBIND_MAXUADDRLEN + 1];
 832         u32                             sc_cb_ident;
 833 };
 834
 835 struct nfs4_setclientid_res {
 836         u64                             clientid;
 837         nfs4_verifier                   confirm;
 838 };
 839
 840 struct nfs4_statfs_arg {
 841         const struct nfs_fh *           fh;
 842         const u32 *                     bitmask;
 843         struct nfs4_sequence_args       seq_args;
 844 };
 845
 846 struct nfs4_statfs_res {
 847         struct nfs_fsstat              *fsstat;
 848         struct nfs4_sequence_res        seq_res;
 849 };
 850
 851 struct nfs4_server_caps_arg {
 852         struct nfs_fh                  *fhandle;
 853         struct nfs4_sequence_args       seq_args;
 854 };
 855
 856 struct nfs4_server_caps_res {
 857         u32                             attr_bitmask[2];
 858         u32                             acl_bitmask;
 859         u32                             has_links;
 860         u32                             has_symlinks;
 861         struct nfs4_sequence_res        seq_res;
 862 };
 863
 864 struct nfs4_string {
 865         unsigned int len;
 866         char *data;
 867 };
 868
 869 #define NFS4_PATHNAME_MAXCOMPONENTS 512
 870 struct nfs4_pathname {
 871         unsigned int ncomponents;
 872         struct nfs4_string components[NFS4_PATHNAME_MAXCOMPONENTS];
 873 };
 874
 875 #define NFS4_FS_LOCATION_MAXSERVERS 10
 876 struct nfs4_fs_location {
 877         unsigned int nservers;
 878         struct nfs4_string servers[NFS4_FS_LOCATION_MAXSERVERS];
 879         struct nfs4_pathname rootpath;
 880 };
 881
 882 #define NFS4_FS_LOCATIONS_MAXENTRIES 10
 883 struct nfs4_fs_locations {
 884         struct nfs_fattr fattr;
 885         const struct nfs_server *server;
 886         struct nfs4_pathname fs_path;
 887         int nlocations;
 888         struct nfs4_fs_location locations[NFS4_FS_LOCATIONS_MAXENTRIES];
 889 };
 890
 891 struct nfs4_fs_locations_arg {
 892         const struct nfs_fh *dir_fh;
 893         const struct qstr *name;
 894         struct page *page;
 895         const u32 *bitmask;
 896         struct nfs4_sequence_args       seq_args;
 897 };
 898
 899 struct nfs4_fs_locations_res {
 900         struct nfs4_fs_locations       *fs_locations;
 901         struct nfs4_sequence_res        seq_res;
 902 };
 903
 904 #endif /* CONFIG_NFS_V4 */
 905
 906 struct nfstime4 {
 907         u64     seconds;
 908         u32     nseconds;
 909 };
 910
 911 #ifdef CONFIG_NFS_V4_1
 912 struct nfs_impl_id4 {
 913         u32             domain_len;
 914         char            *domain;
 915         u32             name_len;
 916         char            *name;
 917         struct nfstime4 date;
 918 };
 919
 920 #define NFS4_EXCHANGE_ID_LEN    (48)
 921 struct nfs41_exchange_id_args {
 922         struct nfs_client               *client;
 923         nfs4_verifier                   *verifier;
 924         unsigned int                    id_len;
 925         char                            id[NFS4_EXCHANGE_ID_LEN];
 926         u32                             flags;
 927 };
 928
 929 struct server_owner {
 930         uint64_t                        minor_id;
 931         uint32_t                        major_id_sz;
 932         char                            major_id[NFS4_OPAQUE_LIMIT];
 933 };
 934
 935 struct server_scope {
 936         uint32_t                        server_scope_sz;
 937         char                            server_scope[NFS4_OPAQUE_LIMIT];
 938 };
 939
 940 struct nfs41_exchange_id_res {
 941         struct nfs_client               *client;
 942         u32                             flags;
 943 };
 944
 945 struct nfs41_create_session_args {
 946         struct nfs_client              *client;
 947         uint32_t                        flags;
 948         uint32_t                        cb_program;
 949         struct nfs4_channel_attrs       fc_attrs;       /* Fore Channel */
 950         struct nfs4_channel_attrs       bc_attrs;       /* Back Channel */
 951 };
 952
 953 struct nfs41_create_session_res {
 954         struct nfs_client              *client;
 955 };
 956
 957 struct nfs41_reclaim_complete_args {
 958         /* In the future extend to include curr_fh for use with migration */
 959         unsigned char                   one_fs:1;
 960         struct nfs4_sequence_args       seq_args;
 961 };
 962
 963 struct nfs41_reclaim_complete_res {
 964         struct nfs4_sequence_res        seq_res;
 965 };
 966 #endif /* CONFIG_NFS_V4_1 */
 967
 968 struct nfs_page;
 969
 970 #define NFS_PAGEVEC_SIZE        (8U)
 971
 972 struct nfs_read_data {
 973         int                     flags;
 974         struct rpc_task         task;
 975         struct inode            *inode;
 976         struct rpc_cred         *cred;
 977         struct nfs_fattr        fattr;  /* fattr storage */
 978         struct list_head        pages;  /* Coalesced read requests */
 979         struct nfs_page         *req;   /* multi ops per nfs_page */
 980         struct page             **pagevec;
 981         unsigned int            npages; /* Max length of pagevec */
 982         struct nfs_readargs args;
 983         struct nfs_readres  res;
 984 #ifdef CONFIG_NFS_V4
 985         unsigned long           timestamp;      /* For lease renewal */
 986 #endif
 987         struct page             *page_array[NFS_PAGEVEC_SIZE];
 988 };
 989
 990 struct nfs_write_data {
 991         int                     flags;
 992         struct rpc_task         task;
 993         struct inode            *inode;
 994         struct rpc_cred         *cred;
 995         struct nfs_fattr        fattr;
 996         struct nfs_writeverf    verf;
 997         struct list_head        pages;          /* Coalesced requests we wish to flush */
 998         struct nfs_page         *req;           /* multi ops per nfs_page */
 999         struct page             **pagevec;
1000         unsigned int            npages;         /* Max length of pagevec */
1001         struct nfs_writeargs    args;           /* argument struct */
1002         struct nfs_writeres     res;            /* result struct */
1003 #ifdef CONFIG_NFS_V4
1004         unsigned long           timestamp;      /* For lease renewal */
1005 #endif
1006         struct page             *page_array[NFS_PAGEVEC_SIZE];
1007 };
1008
1009 struct nfs_access_entry;
1010
1011 /*
1012  * RPC procedure vector for NFSv2/NFSv3 demuxing
1013  */
1014 struct nfs_rpc_ops {
1015         u32     version;                /* Protocol version */
1016         const struct dentry_operations *dentry_ops;
1017         const struct inode_operations *dir_inode_ops;
1018         const struct inode_operations *file_inode_ops;
1019
1020         int     (*getroot) (struct nfs_server *, struct nfs_fh *,
1021                             struct nfs_fsinfo *);
1022         int     (*lookupfh)(struct nfs_server *, struct nfs_fh *,
1023                             struct qstr *, struct nfs_fh *,
1024                             struct nfs_fattr *);
1025         int     (*getattr) (struct nfs_server *, struct nfs_fh *,
1026                             struct nfs_fattr *);
1027         int     (*setattr) (struct dentry *, struct nfs_fattr *,
1028                             struct iattr *);
1029         int     (*lookup)  (struct inode *, struct qstr *,
1030                             struct nfs_fh *, struct nfs_fattr *);
1031         int     (*access)  (struct inode *, struct nfs_access_entry *);
1032         int     (*readlink)(struct inode *, struct page *, unsigned int,
1033                             unsigned int);
1034         int     (*create)  (struct inode *, struct dentry *,
1035                             struct iattr *, int, struct nameidata *);
1036         int     (*remove)  (struct inode *, struct qstr *);
1037         void    (*unlink_setup)  (struct rpc_message *, struct inode *dir);
1038         int     (*unlink_done) (struct rpc_task *, struct inode *);
1039         int     (*rename)  (struct inode *, struct qstr *,
1040                             struct inode *, struct qstr *);
1041         int     (*link)    (struct inode *, struct inode *, struct qstr *);
1042         int     (*symlink) (struct inode *, struct dentry *, struct page *,
1043                             unsigned int, struct iattr *);
1044         int     (*mkdir)   (struct inode *, struct dentry *, struct iattr *);
1045         int     (*rmdir)   (struct inode *, struct qstr *);
1046         int     (*readdir) (struct dentry *, struct rpc_cred *,
1047                             u64, struct page *, unsigned int, int);
1048         int     (*mknod)   (struct inode *, struct dentry *, struct iattr *,
1049                             dev_t);
1050         int     (*statfs)  (struct nfs_server *, struct nfs_fh *,
1051                             struct nfs_fsstat *);
1052         int     (*fsinfo)  (struct nfs_server *, struct nfs_fh *,
1053                             struct nfs_fsinfo *);
1054         int     (*pathconf) (struct nfs_server *, struct nfs_fh *,
1055                              struct nfs_pathconf *);
1056         int     (*set_capabilities)(struct nfs_server *, struct nfs_fh *);
1057         __be32 *(*decode_dirent)(__be32 *, struct nfs_entry *, int plus);
1058         void    (*read_setup)   (struct nfs_read_data *, struct rpc_message *);
1059         int     (*read_done)  (struct rpc_task *, struct nfs_read_data *);
1060         void    (*write_setup)  (struct nfs_write_data *, struct rpc_message *);
1061         int     (*write_done)  (struct rpc_task *, struct nfs_write_data *);
1062         void    (*commit_setup) (struct nfs_write_data *, struct rpc_message *);
1063         int     (*commit_done) (struct rpc_task *, struct nfs_write_data *);
1064         int     (*lock)(struct file *, int, struct file_lock *);
1065         int     (*lock_check_bounds)(const struct file_lock *);
1066         void    (*clear_acl_cache)(struct inode *);
1067         void    (*close_context)(struct nfs_open_context *ctx, int);
1068 };
1069
1070 /*
1071  *      NFS_CALL(getattr, inode, (fattr));
1072  * into
1073  *      NFS_PROTO(inode)->getattr(fattr);
1074  */
1075 #define NFS_CALL(op, inode, args)       NFS_PROTO(inode)->op args
1076
1077 /*
1078  * Function vectors etc. for the NFS client
1079  */
1080 extern const struct nfs_rpc_ops nfs_v2_clientops;
1081 extern const struct nfs_rpc_ops nfs_v3_clientops;
1082 extern const struct nfs_rpc_ops nfs_v4_clientops;
1083 extern struct rpc_version       nfs_version2;
1084 extern struct rpc_version       nfs_version3;
1085 extern struct rpc_version       nfs_version4;
1086
1087 extern struct rpc_version       nfsacl_version3;
1088 extern struct rpc_program       nfsacl_program;
1089
1090 #endif