include/linux/nfs_xdr.h

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