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         struct nfs4_slot        *sr_slot;       /* 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  * Common arguments to the rename call
 404  */
 405 struct nfs_renameargs {
 406         const struct nfs_fh             *old_dir;
 407         const struct nfs_fh             *new_dir;
 408         const struct qstr               *old_name;
 409         const struct qstr               *new_name;
 410         const u32                       *bitmask;
 411         struct nfs4_sequence_args       seq_args;
 412 };
 413
 414 struct nfs_renameres {
 415         const struct nfs_server         *server;
 416         struct nfs4_change_info         old_cinfo;
 417         struct nfs_fattr                *old_fattr;
 418         struct nfs4_change_info         new_cinfo;
 419         struct nfs_fattr                *new_fattr;
 420         struct nfs4_sequence_res        seq_res;
 421 };
 422
 423 /*
 424  * Argument struct for decode_entry function
 425  */
 426 struct nfs_entry {
 427         __u64                   ino;
 428         __u64                   cookie,
 429                                 prev_cookie;
 430         const char *            name;
 431         unsigned int            len;
 432         int                     eof;
 433         struct nfs_fh *         fh;
 434         struct nfs_fattr *      fattr;
 435 };
 436
 437 /*
 438  * The following types are for NFSv2 only.
 439  */
 440 struct nfs_sattrargs {
 441         struct nfs_fh *         fh;
 442         struct iattr *          sattr;
 443 };
 444
 445 struct nfs_diropargs {
 446         struct nfs_fh *         fh;
 447         const char *            name;
 448         unsigned int            len;
 449 };
 450
 451 struct nfs_createargs {
 452         struct nfs_fh *         fh;
 453         const char *            name;
 454         unsigned int            len;
 455         struct iattr *          sattr;
 456 };
 457
 458 struct nfs_setattrargs {
 459         struct nfs_fh *                 fh;
 460         nfs4_stateid                    stateid;
 461         struct iattr *                  iap;
 462         const struct nfs_server *       server; /* Needed for name mapping */
 463         const u32 *                     bitmask;
 464         struct nfs4_sequence_args       seq_args;
 465 };
 466
 467 struct nfs_setaclargs {
 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_setaclres {
 476         struct nfs4_sequence_res        seq_res;
 477 };
 478
 479 struct nfs_getaclargs {
 480         struct nfs_fh *                 fh;
 481         size_t                          acl_len;
 482         unsigned int                    acl_pgbase;
 483         struct page **                  acl_pages;
 484         struct nfs4_sequence_args       seq_args;
 485 };
 486
 487 struct nfs_getaclres {
 488         size_t                          acl_len;
 489         struct nfs4_sequence_res        seq_res;
 490 };
 491
 492 struct nfs_setattrres {
 493         struct nfs_fattr *              fattr;
 494         const struct nfs_server *       server;
 495         struct nfs4_sequence_res        seq_res;
 496 };
 497
 498 struct nfs_linkargs {
 499         struct nfs_fh *         fromfh;
 500         struct nfs_fh *         tofh;
 501         const char *            toname;
 502         unsigned int            tolen;
 503 };
 504
 505 struct nfs_symlinkargs {
 506         struct nfs_fh *         fromfh;
 507         const char *            fromname;
 508         unsigned int            fromlen;
 509         struct page **          pages;
 510         unsigned int            pathlen;
 511         struct iattr *          sattr;
 512 };
 513
 514 struct nfs_readdirargs {
 515         struct nfs_fh *         fh;
 516         __u32                   cookie;
 517         unsigned int            count;
 518         struct page **          pages;
 519 };
 520
 521 struct nfs3_getaclargs {
 522         struct nfs_fh *         fh;
 523         int                     mask;
 524         struct page **          pages;
 525 };
 526
 527 struct nfs3_setaclargs {
 528         struct inode *          inode;
 529         int                     mask;
 530         struct posix_acl *      acl_access;
 531         struct posix_acl *      acl_default;
 532         size_t                  len;
 533         unsigned int            npages;
 534         struct page **          pages;
 535 };
 536
 537 struct nfs_diropok {
 538         struct nfs_fh *         fh;
 539         struct nfs_fattr *      fattr;
 540 };
 541
 542 struct nfs_readlinkargs {
 543         struct nfs_fh *         fh;
 544         unsigned int            pgbase;
 545         unsigned int            pglen;
 546         struct page **          pages;
 547 };
 548
 549 struct nfs3_sattrargs {
 550         struct nfs_fh *         fh;
 551         struct iattr *          sattr;
 552         unsigned int            guard;
 553         struct timespec         guardtime;
 554 };
 555
 556 struct nfs3_diropargs {
 557         struct nfs_fh *         fh;
 558         const char *            name;
 559         unsigned int            len;
 560 };
 561
 562 struct nfs3_accessargs {
 563         struct nfs_fh *         fh;
 564         __u32                   access;
 565 };
 566
 567 struct nfs3_createargs {
 568         struct nfs_fh *         fh;
 569         const char *            name;
 570         unsigned int            len;
 571         struct iattr *          sattr;
 572         enum nfs3_createmode    createmode;
 573         __be32                  verifier[2];
 574 };
 575
 576 struct nfs3_mkdirargs {
 577         struct nfs_fh *         fh;
 578         const char *            name;
 579         unsigned int            len;
 580         struct iattr *          sattr;
 581 };
 582
 583 struct nfs3_symlinkargs {
 584         struct nfs_fh *         fromfh;
 585         const char *            fromname;
 586         unsigned int            fromlen;
 587         struct page **          pages;
 588         unsigned int            pathlen;
 589         struct iattr *          sattr;
 590 };
 591
 592 struct nfs3_mknodargs {
 593         struct nfs_fh *         fh;
 594         const char *            name;
 595         unsigned int            len;
 596         enum nfs3_ftype         type;
 597         struct iattr *          sattr;
 598         dev_t                   rdev;
 599 };
 600
 601 struct nfs3_linkargs {
 602         struct nfs_fh *         fromfh;
 603         struct nfs_fh *         tofh;
 604         const char *            toname;
 605         unsigned int            tolen;
 606 };
 607
 608 struct nfs3_readdirargs {
 609         struct nfs_fh *         fh;
 610         __u64                   cookie;
 611         __be32                  verf[2];
 612         int                     plus;
 613         unsigned int            count;
 614         struct page **          pages;
 615 };
 616
 617 struct nfs3_diropres {
 618         struct nfs_fattr *      dir_attr;
 619         struct nfs_fh *         fh;
 620         struct nfs_fattr *      fattr;
 621 };
 622
 623 struct nfs3_accessres {
 624         struct nfs_fattr *      fattr;
 625         __u32                   access;
 626 };
 627
 628 struct nfs3_readlinkargs {
 629         struct nfs_fh *         fh;
 630         unsigned int            pgbase;
 631         unsigned int            pglen;
 632         struct page **          pages;
 633 };
 634
 635 struct nfs3_linkres {
 636         struct nfs_fattr *      dir_attr;
 637         struct nfs_fattr *      fattr;
 638 };
 639
 640 struct nfs3_readdirres {
 641         struct nfs_fattr *      dir_attr;
 642         __be32 *                verf;
 643         int                     plus;
 644 };
 645
 646 struct nfs3_getaclres {
 647         struct nfs_fattr *      fattr;
 648         int                     mask;
 649         unsigned int            acl_access_count;
 650         unsigned int            acl_default_count;
 651         struct posix_acl *      acl_access;
 652         struct posix_acl *      acl_default;
 653 };
 654
 655 #ifdef CONFIG_NFS_V4
 656
 657 typedef u64 clientid4;
 658
 659 struct nfs4_accessargs {
 660         const struct nfs_fh *           fh;
 661         const u32 *                     bitmask;
 662         u32                             access;
 663         struct nfs4_sequence_args       seq_args;
 664 };
 665
 666 struct nfs4_accessres {
 667         const struct nfs_server *       server;
 668         struct nfs_fattr *              fattr;
 669         u32                             supported;
 670         u32                             access;
 671         struct nfs4_sequence_res        seq_res;
 672 };
 673
 674 struct nfs4_create_arg {
 675         u32                             ftype;
 676         union {
 677                 struct {
 678                         struct page **  pages;
 679                         unsigned int    len;
 680                 } symlink;   /* NF4LNK */
 681                 struct {
 682                         u32             specdata1;
 683                         u32             specdata2;
 684                 } device;    /* NF4BLK, NF4CHR */
 685         } u;
 686         const struct qstr *             name;
 687         const struct nfs_server *       server;
 688         const struct iattr *            attrs;
 689         const struct nfs_fh *           dir_fh;
 690         const u32 *                     bitmask;
 691         struct nfs4_sequence_args       seq_args;
 692 };
 693
 694 struct nfs4_create_res {
 695         const struct nfs_server *       server;
 696         struct nfs_fh *                 fh;
 697         struct nfs_fattr *              fattr;
 698         struct nfs4_change_info         dir_cinfo;
 699         struct nfs_fattr *              dir_fattr;
 700         struct nfs4_sequence_res        seq_res;
 701 };
 702
 703 struct nfs4_fsinfo_arg {
 704         const struct nfs_fh *           fh;
 705         const u32 *                     bitmask;
 706         struct nfs4_sequence_args       seq_args;
 707 };
 708
 709 struct nfs4_fsinfo_res {
 710         struct nfs_fsinfo              *fsinfo;
 711         struct nfs4_sequence_res        seq_res;
 712 };
 713
 714 struct nfs4_getattr_arg {
 715         const struct nfs_fh *           fh;
 716         const u32 *                     bitmask;
 717         struct nfs4_sequence_args       seq_args;
 718 };
 719
 720 struct nfs4_getattr_res {
 721         const struct nfs_server *       server;
 722         struct nfs_fattr *              fattr;
 723         struct nfs4_sequence_res        seq_res;
 724 };
 725
 726 struct nfs4_link_arg {
 727         const struct nfs_fh *           fh;
 728         const struct nfs_fh *           dir_fh;
 729         const struct qstr *             name;
 730         const u32 *                     bitmask;
 731         struct nfs4_sequence_args       seq_args;
 732 };
 733
 734 struct nfs4_link_res {
 735         const struct nfs_server *       server;
 736         struct nfs_fattr *              fattr;
 737         struct nfs4_change_info         cinfo;
 738         struct nfs_fattr *              dir_attr;
 739         struct nfs4_sequence_res        seq_res;
 740 };
 741
 742
 743 struct nfs4_lookup_arg {
 744         const struct nfs_fh *           dir_fh;
 745         const struct qstr *             name;
 746         const u32 *                     bitmask;
 747         struct nfs4_sequence_args       seq_args;
 748 };
 749
 750 struct nfs4_lookup_res {
 751         const struct nfs_server *       server;
 752         struct nfs_fattr *              fattr;
 753         struct nfs_fh *                 fh;
 754         struct nfs4_sequence_res        seq_res;
 755 };
 756
 757 struct nfs4_lookup_root_arg {
 758         const u32 *                     bitmask;
 759         struct nfs4_sequence_args       seq_args;
 760 };
 761
 762 struct nfs4_pathconf_arg {
 763         const struct nfs_fh *           fh;
 764         const u32 *                     bitmask;
 765         struct nfs4_sequence_args       seq_args;
 766 };
 767
 768 struct nfs4_pathconf_res {
 769         struct nfs_pathconf            *pathconf;
 770         struct nfs4_sequence_res        seq_res;
 771 };
 772
 773 struct nfs4_readdir_arg {
 774         const struct nfs_fh *           fh;
 775         u64                             cookie;
 776         nfs4_verifier                   verifier;
 777         u32                             count;
 778         struct page **                  pages;  /* zero-copy data */
 779         unsigned int                    pgbase; /* zero-copy data */
 780         const u32 *                     bitmask;
 781         int                             plus;
 782         struct nfs4_sequence_args       seq_args;
 783 };
 784
 785 struct nfs4_readdir_res {
 786         nfs4_verifier                   verifier;
 787         unsigned int                    pgbase;
 788         struct nfs4_sequence_res        seq_res;
 789 };
 790
 791 struct nfs4_readlink {
 792         const struct nfs_fh *           fh;
 793         unsigned int                    pgbase;
 794         unsigned int                    pglen;   /* zero-copy data */
 795         struct page **                  pages;   /* zero-copy data */
 796         struct nfs4_sequence_args       seq_args;
 797 };
 798
 799 struct nfs4_readlink_res {
 800         struct nfs4_sequence_res        seq_res;
 801 };
 802
 803 #define NFS4_SETCLIENTID_NAMELEN        (127)
 804 struct nfs4_setclientid {
 805         const nfs4_verifier *           sc_verifier;
 806         unsigned int                    sc_name_len;
 807         char                            sc_name[NFS4_SETCLIENTID_NAMELEN + 1];
 808         u32                             sc_prog;
 809         unsigned int                    sc_netid_len;
 810         char                            sc_netid[RPCBIND_MAXNETIDLEN + 1];
 811         unsigned int                    sc_uaddr_len;
 812         char                            sc_uaddr[RPCBIND_MAXUADDRLEN + 1];
 813         u32                             sc_cb_ident;
 814 };
 815
 816 struct nfs4_setclientid_res {
 817         u64                             clientid;
 818         nfs4_verifier                   confirm;
 819 };
 820
 821 struct nfs4_statfs_arg {
 822         const struct nfs_fh *           fh;
 823         const u32 *                     bitmask;
 824         struct nfs4_sequence_args       seq_args;
 825 };
 826
 827 struct nfs4_statfs_res {
 828         struct nfs_fsstat              *fsstat;
 829         struct nfs4_sequence_res        seq_res;
 830 };
 831
 832 struct nfs4_server_caps_arg {
 833         struct nfs_fh                  *fhandle;
 834         struct nfs4_sequence_args       seq_args;
 835 };
 836
 837 struct nfs4_server_caps_res {
 838         u32                             attr_bitmask[2];
 839         u32                             acl_bitmask;
 840         u32                             has_links;
 841         u32                             has_symlinks;
 842         struct nfs4_sequence_res        seq_res;
 843 };
 844
 845 struct nfs4_string {
 846         unsigned int len;
 847         char *data;
 848 };
 849
 850 #define NFS4_PATHNAME_MAXCOMPONENTS 512
 851 struct nfs4_pathname {
 852         unsigned int ncomponents;
 853         struct nfs4_string components[NFS4_PATHNAME_MAXCOMPONENTS];
 854 };
 855
 856 #define NFS4_FS_LOCATION_MAXSERVERS 10
 857 struct nfs4_fs_location {
 858         unsigned int nservers;
 859         struct nfs4_string servers[NFS4_FS_LOCATION_MAXSERVERS];
 860         struct nfs4_pathname rootpath;
 861 };
 862
 863 #define NFS4_FS_LOCATIONS_MAXENTRIES 10
 864 struct nfs4_fs_locations {
 865         struct nfs_fattr fattr;
 866         const struct nfs_server *server;
 867         struct nfs4_pathname fs_path;
 868         int nlocations;
 869         struct nfs4_fs_location locations[NFS4_FS_LOCATIONS_MAXENTRIES];
 870 };
 871
 872 struct nfs4_fs_locations_arg {
 873         const struct nfs_fh *dir_fh;
 874         const struct qstr *name;
 875         struct page *page;
 876         const u32 *bitmask;
 877         struct nfs4_sequence_args       seq_args;
 878 };
 879
 880 struct nfs4_fs_locations_res {
 881         struct nfs4_fs_locations       *fs_locations;
 882         struct nfs4_sequence_res        seq_res;
 883 };
 884
 885 #endif /* CONFIG_NFS_V4 */
 886
 887 struct nfstime4 {
 888         u64     seconds;
 889         u32     nseconds;
 890 };
 891
 892 #ifdef CONFIG_NFS_V4_1
 893 struct nfs_impl_id4 {
 894         u32             domain_len;
 895         char            *domain;
 896         u32             name_len;
 897         char            *name;
 898         struct nfstime4 date;
 899 };
 900
 901 #define NFS4_EXCHANGE_ID_LEN    (48)
 902 struct nfs41_exchange_id_args {
 903         struct nfs_client               *client;
 904         nfs4_verifier                   *verifier;
 905         unsigned int                    id_len;
 906         char                            id[NFS4_EXCHANGE_ID_LEN];
 907         u32                             flags;
 908 };
 909
 910 struct server_owner {
 911         uint64_t                        minor_id;
 912         uint32_t                        major_id_sz;
 913         char                            major_id[NFS4_OPAQUE_LIMIT];
 914 };
 915
 916 struct server_scope {
 917         uint32_t                        server_scope_sz;
 918         char                            server_scope[NFS4_OPAQUE_LIMIT];
 919 };
 920
 921 struct nfs41_exchange_id_res {
 922         struct nfs_client               *client;
 923         u32                             flags;
 924 };
 925
 926 struct nfs41_create_session_args {
 927         struct nfs_client              *client;
 928         uint32_t                        flags;
 929         uint32_t                        cb_program;
 930         struct nfs4_channel_attrs       fc_attrs;       /* Fore Channel */
 931         struct nfs4_channel_attrs       bc_attrs;       /* Back Channel */
 932 };
 933
 934 struct nfs41_create_session_res {
 935         struct nfs_client              *client;
 936 };
 937
 938 struct nfs41_reclaim_complete_args {
 939         /* In the future extend to include curr_fh for use with migration */
 940         unsigned char                   one_fs:1;
 941         struct nfs4_sequence_args       seq_args;
 942 };
 943
 944 struct nfs41_reclaim_complete_res {
 945         struct nfs4_sequence_res        seq_res;
 946 };
 947 #endif /* CONFIG_NFS_V4_1 */
 948
 949 struct nfs_page;
 950
 951 #define NFS_PAGEVEC_SIZE        (8U)
 952
 953 struct nfs_read_data {
 954         int                     flags;
 955         struct rpc_task         task;
 956         struct inode            *inode;
 957         struct rpc_cred         *cred;
 958         struct nfs_fattr        fattr;  /* fattr storage */
 959         struct list_head        pages;  /* Coalesced read requests */
 960         struct nfs_page         *req;   /* multi ops per nfs_page */
 961         struct page             **pagevec;
 962         unsigned int            npages; /* Max length of pagevec */
 963         struct nfs_readargs args;
 964         struct nfs_readres  res;
 965 #ifdef CONFIG_NFS_V4
 966         unsigned long           timestamp;      /* For lease renewal */
 967 #endif
 968         struct page             *page_array[NFS_PAGEVEC_SIZE];
 969 };
 970
 971 struct nfs_write_data {
 972         int                     flags;
 973         struct rpc_task         task;
 974         struct inode            *inode;
 975         struct rpc_cred         *cred;
 976         struct nfs_fattr        fattr;
 977         struct nfs_writeverf    verf;
 978         struct list_head        pages;          /* Coalesced requests we wish to flush */
 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_writeargs    args;           /* argument struct */
 983         struct nfs_writeres     res;            /* result struct */
 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_access_entry;
 991
 992 /*
 993  * RPC procedure vector for NFSv2/NFSv3 demuxing
 994  */
 995 struct nfs_rpc_ops {
 996         u32     version;                /* Protocol version */
 997         const struct dentry_operations *dentry_ops;
 998         const struct inode_operations *dir_inode_ops;
 999         const struct inode_operations *file_inode_ops;
1000
1001         int     (*getroot) (struct nfs_server *, struct nfs_fh *,
1002                             struct nfs_fsinfo *);
1003         int     (*lookupfh)(struct nfs_server *, struct nfs_fh *,
1004                             struct qstr *, struct nfs_fh *,
1005                             struct nfs_fattr *);
1006         int     (*getattr) (struct nfs_server *, struct nfs_fh *,
1007                             struct nfs_fattr *);
1008         int     (*setattr) (struct dentry *, struct nfs_fattr *,
1009                             struct iattr *);
1010         int     (*lookup)  (struct inode *, struct qstr *,
1011                             struct nfs_fh *, struct nfs_fattr *);
1012         int     (*access)  (struct inode *, struct nfs_access_entry *);
1013         int     (*readlink)(struct inode *, struct page *, unsigned int,
1014                             unsigned int);
1015         int     (*create)  (struct inode *, struct dentry *,
1016                             struct iattr *, int, struct nfs_open_context *);
1017         int     (*remove)  (struct inode *, struct qstr *);
1018         void    (*unlink_setup)  (struct rpc_message *, struct inode *dir);
1019         int     (*unlink_done) (struct rpc_task *, struct inode *);
1020         int     (*rename)  (struct inode *, struct qstr *,
1021                             struct inode *, struct qstr *);
1022         void    (*rename_setup)  (struct rpc_message *msg, struct inode *dir);
1023         int     (*rename_done) (struct rpc_task *task, struct inode *old_dir, struct inode *new_dir);
1024         int     (*link)    (struct inode *, struct inode *, struct qstr *);
1025         int     (*symlink) (struct inode *, struct dentry *, struct page *,
1026                             unsigned int, struct iattr *);
1027         int     (*mkdir)   (struct inode *, struct dentry *, struct iattr *);
1028         int     (*rmdir)   (struct inode *, struct qstr *);
1029         int     (*readdir) (struct dentry *, struct rpc_cred *,
1030                             u64, struct page **, unsigned int, int);
1031         int     (*mknod)   (struct inode *, struct dentry *, struct iattr *,
1032                             dev_t);
1033         int     (*statfs)  (struct nfs_server *, struct nfs_fh *,
1034                             struct nfs_fsstat *);
1035         int     (*fsinfo)  (struct nfs_server *, struct nfs_fh *,
1036                             struct nfs_fsinfo *);
1037         int     (*pathconf) (struct nfs_server *, struct nfs_fh *,
1038                              struct nfs_pathconf *);
1039         int     (*set_capabilities)(struct nfs_server *, struct nfs_fh *);
1040         __be32 *(*decode_dirent)(struct xdr_stream *, struct nfs_entry *, struct nfs_server *, int plus);
1041         void    (*read_setup)   (struct nfs_read_data *, struct rpc_message *);
1042         int     (*read_done)  (struct rpc_task *, struct nfs_read_data *);
1043         void    (*write_setup)  (struct nfs_write_data *, struct rpc_message *);
1044         int     (*write_done)  (struct rpc_task *, struct nfs_write_data *);
1045         void    (*commit_setup) (struct nfs_write_data *, struct rpc_message *);
1046         int     (*commit_done) (struct rpc_task *, struct nfs_write_data *);
1047         int     (*lock)(struct file *, int, struct file_lock *);
1048         int     (*lock_check_bounds)(const struct file_lock *);
1049         void    (*clear_acl_cache)(struct inode *);
1050         void    (*close_context)(struct nfs_open_context *ctx, int);
1051         struct inode * (*open_context) (struct inode *dir,
1052                                 struct nfs_open_context *ctx,
1053                                 int open_flags,
1054                                 struct iattr *iattr);
1055 };
1056
1057 /*
1058  *      NFS_CALL(getattr, inode, (fattr));
1059  * into
1060  *      NFS_PROTO(inode)->getattr(fattr);
1061  */
1062 #define NFS_CALL(op, inode, args)       NFS_PROTO(inode)->op args
1063
1064 /*
1065  * Function vectors etc. for the NFS client
1066  */
1067 extern const struct nfs_rpc_ops nfs_v2_clientops;
1068 extern const struct nfs_rpc_ops nfs_v3_clientops;
1069 extern const struct nfs_rpc_ops nfs_v4_clientops;
1070 extern struct rpc_version       nfs_version2;
1071 extern struct rpc_version       nfs_version3;
1072 extern struct rpc_version       nfs_version4;
1073
1074 extern struct rpc_version       nfsacl_version3;
1075 extern struct rpc_program       nfsacl_program;
1076
1077 #endif