include/linux/nfs_xdr.h

   1 #ifndef _LINUX_NFS_XDR_H
   2 #define _LINUX_NFS_XDR_H
   3
   4 #include <linux/nfsacl.h>
   5 #include <linux/nfs3.h>
   6
   7 /*
   8  * To change the maximum rsize and wsize supported by the NFS client, adjust
   9  * NFS_MAX_FILE_IO_SIZE.  64KB is a typical maximum, but some servers can
  10  * support a megabyte or more.  The default is left at 4096 bytes, which is
  11  * reasonable for NFS over UDP.
  12  */
  13 #define NFS_MAX_FILE_IO_SIZE    (1048576U)
  14 #define NFS_DEF_FILE_IO_SIZE    (4096U)
  15 #define NFS_MIN_FILE_IO_SIZE    (1024U)
  16
  17 struct nfs_fsid {
  18         uint64_t                major;
  19         uint64_t                minor;
  20 };
  21
  22 /*
  23  * Helper for checking equality between 2 fsids.
  24  */
  25 static inline int nfs_fsid_equal(const struct nfs_fsid *a, const struct nfs_fsid *b)
  26 {
  27         return a->major == b->major && a->minor == b->minor;
  28 }
  29
  30 struct nfs_fattr {
  31         unsigned int            valid;          /* which fields are valid */
  32         umode_t                 mode;
  33         __u32                   nlink;
  34         __u32                   uid;
  35         __u32                   gid;
  36         dev_t                   rdev;
  37         __u64                   size;
  38         union {
  39                 struct {
  40                         __u32   blocksize;
  41                         __u32   blocks;
  42                 } nfs2;
  43                 struct {
  44                         __u64   used;
  45                 } nfs3;
  46         } du;
  47         struct nfs_fsid         fsid;
  48         __u64                   fileid;
  49         struct timespec         atime;
  50         struct timespec         mtime;
  51         struct timespec         ctime;
  52         __u64                   change_attr;    /* NFSv4 change attribute */
  53         __u64                   pre_change_attr;/* pre-op NFSv4 change attribute */
  54         __u64                   pre_size;       /* pre_op_attr.size       */
  55         struct timespec         pre_mtime;      /* pre_op_attr.mtime      */
  56         struct timespec         pre_ctime;      /* pre_op_attr.ctime      */
  57         unsigned long           time_start;
  58         unsigned long           gencount;
  59 };
  60
  61 #define NFS_ATTR_FATTR_TYPE             (1U << 0)
  62 #define NFS_ATTR_FATTR_MODE             (1U << 1)
  63 #define NFS_ATTR_FATTR_NLINK            (1U << 2)
  64 #define NFS_ATTR_FATTR_OWNER            (1U << 3)
  65 #define NFS_ATTR_FATTR_GROUP            (1U << 4)
  66 #define NFS_ATTR_FATTR_RDEV             (1U << 5)
  67 #define NFS_ATTR_FATTR_SIZE             (1U << 6)
  68 #define NFS_ATTR_FATTR_PRESIZE          (1U << 7)
  69 #define NFS_ATTR_FATTR_BLOCKS_USED      (1U << 8)
  70 #define NFS_ATTR_FATTR_SPACE_USED       (1U << 9)
  71 #define NFS_ATTR_FATTR_FSID             (1U << 10)
  72 #define NFS_ATTR_FATTR_FILEID           (1U << 11)
  73 #define NFS_ATTR_FATTR_ATIME            (1U << 12)
  74 #define NFS_ATTR_FATTR_MTIME            (1U << 13)
  75 #define NFS_ATTR_FATTR_CTIME            (1U << 14)
  76 #define NFS_ATTR_FATTR_PREMTIME         (1U << 15)
  77 #define NFS_ATTR_FATTR_PRECTIME         (1U << 16)
  78 #define NFS_ATTR_FATTR_CHANGE           (1U << 17)
  79 #define NFS_ATTR_FATTR_PRECHANGE        (1U << 18)
  80 #define NFS_ATTR_FATTR_V4_REFERRAL      (1U << 19)      /* NFSv4 referral */
  81
  82 #define NFS_ATTR_FATTR (NFS_ATTR_FATTR_TYPE \
  83                 | NFS_ATTR_FATTR_MODE \
  84                 | NFS_ATTR_FATTR_NLINK \
  85                 | NFS_ATTR_FATTR_OWNER \
  86                 | NFS_ATTR_FATTR_GROUP \
  87                 | NFS_ATTR_FATTR_RDEV \
  88                 | NFS_ATTR_FATTR_SIZE \
  89                 | NFS_ATTR_FATTR_FSID \
  90                 | NFS_ATTR_FATTR_FILEID \
  91                 | NFS_ATTR_FATTR_ATIME \
  92                 | NFS_ATTR_FATTR_MTIME \
  93                 | NFS_ATTR_FATTR_CTIME)
  94 #define NFS_ATTR_FATTR_V2 (NFS_ATTR_FATTR \
  95                 | NFS_ATTR_FATTR_BLOCKS_USED)
  96 #define NFS_ATTR_FATTR_V3 (NFS_ATTR_FATTR \
  97                 | NFS_ATTR_FATTR_SPACE_USED)
  98 #define NFS_ATTR_FATTR_V4 (NFS_ATTR_FATTR \
  99                 | NFS_ATTR_FATTR_SPACE_USED \
 100                 | NFS_ATTR_FATTR_CHANGE)
 101
 102 /*
 103  * Info on the file system
 104  */
 105 struct nfs_fsinfo {
 106         struct nfs_fattr        *fattr; /* Post-op attributes */
 107         __u32                   rtmax;  /* max.  read transfer size */
 108         __u32                   rtpref; /* pref. read transfer size */
 109         __u32                   rtmult; /* reads should be multiple of this */
 110         __u32                   wtmax;  /* max.  write transfer size */
 111         __u32                   wtpref; /* pref. write transfer size */
 112         __u32                   wtmult; /* writes should be multiple of this */
 113         __u32                   dtpref; /* pref. readdir transfer size */
 114         __u64                   maxfilesize;
 115         struct timespec         time_delta; /* server time granularity */
 116         __u32                   lease_time; /* in seconds */
 117         __u32                   layouttype; /* supported pnfs layout driver */
 118 };
 119
 120 struct nfs_fsstat {
 121         struct nfs_fattr        *fattr; /* Post-op attributes */
 122         __u64                   tbytes; /* total size in bytes */
 123         __u64                   fbytes; /* # of free bytes */
 124         __u64                   abytes; /* # of bytes available to user */
 125         __u64                   tfiles; /* # of files */
 126         __u64                   ffiles; /* # of free files */
 127         __u64                   afiles; /* # of files available to user */
 128 };
 129
 130 struct nfs2_fsstat {
 131         __u32                   tsize;  /* Server transfer size */
 132         __u32                   bsize;  /* Filesystem block size */
 133         __u32                   blocks; /* No. of "bsize" blocks on filesystem */
 134         __u32                   bfree;  /* No. of free "bsize" blocks */
 135         __u32                   bavail; /* No. of available "bsize" blocks */
 136 };
 137
 138 struct nfs_pathconf {
 139         struct nfs_fattr        *fattr; /* Post-op attributes */
 140         __u32                   max_link; /* max # of hard links */
 141         __u32                   max_namelen; /* max name length */
 142 };
 143
 144 struct nfs4_change_info {
 145         u32                     atomic;
 146         u64                     before;
 147         u64                     after;
 148 };
 149
 150 struct nfs_seqid;
 151
 152 /* nfs41 sessions channel attributes */
 153 struct nfs4_channel_attrs {
 154         u32                     headerpadsz;
 155         u32                     max_rqst_sz;
 156         u32                     max_resp_sz;
 157         u32                     max_resp_sz_cached;
 158         u32                     max_ops;
 159         u32                     max_reqs;
 160 };
 161
 162 /* nfs41 sessions slot seqid */
 163 struct nfs4_slot {
 164         u32                     seq_nr;
 165 };
 166
 167 struct nfs4_sequence_args {
 168         struct nfs4_session     *sa_session;
 169         u8                      sa_slotid;
 170         u8                      sa_cache_this;
 171 };
 172
 173 struct nfs4_sequence_res {
 174         struct nfs4_session     *sr_session;
 175         struct nfs4_slot        *sr_slot;       /* slot used to send request */
 176         int                     sr_status;      /* sequence operation status */
 177         unsigned long           sr_renewal_time;
 178         u32                     sr_status_flags;
 179 };
 180
 181 struct nfs4_get_lease_time_args {
 182         struct nfs4_sequence_args       la_seq_args;
 183 };
 184
 185 struct nfs4_get_lease_time_res {
 186         struct nfs_fsinfo              *lr_fsinfo;
 187         struct nfs4_sequence_res        lr_seq_res;
 188 };
 189
 190 #define PNFS_LAYOUT_MAXSIZE 4096
 191
 192 struct nfs4_layoutdriver_data {
 193         __u32 len;
 194         void *buf;
 195 };
 196
 197 struct pnfs_layout_range {
 198         u32 iomode;
 199         u64 offset;
 200         u64 length;
 201 };
 202
 203 struct nfs4_layoutget_args {
 204         __u32 type;
 205         struct pnfs_layout_range range;
 206         __u64 minlength;
 207         __u32 maxcount;
 208         struct inode *inode;
 209         struct nfs_open_context *ctx;
 210         struct nfs4_sequence_args seq_args;
 211 };
 212
 213 struct nfs4_layoutget_res {
 214         __u32 return_on_close;
 215         struct pnfs_layout_range range;
 216         __u32 type;
 217         nfs4_stateid stateid;
 218         struct nfs4_layoutdriver_data layout;
 219         struct nfs4_sequence_res seq_res;
 220 };
 221
 222 struct nfs4_layoutget {
 223         struct nfs4_layoutget_args args;
 224         struct nfs4_layoutget_res res;
 225         struct pnfs_layout_segment **lsegpp;
 226         int status;
 227 };
 228
 229 struct nfs4_getdeviceinfo_args {
 230         struct pnfs_device *pdev;
 231         struct nfs4_sequence_args seq_args;
 232 };
 233
 234 struct nfs4_getdeviceinfo_res {
 235         struct pnfs_device *pdev;
 236         struct nfs4_sequence_res seq_res;
 237 };
 238
 239 /*
 240  * Arguments to the open call.
 241  */
 242 struct nfs_openargs {
 243         const struct nfs_fh *   fh;
 244         struct nfs_seqid *      seqid;
 245         int                     open_flags;
 246         fmode_t                 fmode;
 247         __u64                   clientid;
 248         __u64                   id;
 249         union {
 250                 struct {
 251                         struct iattr *  attrs;    /* UNCHECKED, GUARDED */
 252                         nfs4_verifier   verifier; /* EXCLUSIVE */
 253                 };
 254                 nfs4_stateid    delegation;             /* CLAIM_DELEGATE_CUR */
 255                 fmode_t         delegation_type;        /* CLAIM_PREVIOUS */
 256         } u;
 257         const struct qstr *     name;
 258         const struct nfs_server *server;         /* Needed for ID mapping */
 259         const u32 *             bitmask;
 260         __u32                   claim;
 261         struct nfs4_sequence_args       seq_args;
 262 };
 263
 264 struct nfs_openres {
 265         nfs4_stateid            stateid;
 266         struct nfs_fh           fh;
 267         struct nfs4_change_info cinfo;
 268         __u32                   rflags;
 269         struct nfs_fattr *      f_attr;
 270         struct nfs_fattr *      dir_attr;
 271         struct nfs_seqid *      seqid;
 272         const struct nfs_server *server;
 273         fmode_t                 delegation_type;
 274         nfs4_stateid            delegation;
 275         __u32                   do_recall;
 276         __u64                   maxsize;
 277         __u32                   attrset[NFS4_BITMAP_SIZE];
 278         struct nfs4_sequence_res        seq_res;
 279 };
 280
 281 /*
 282  * Arguments to the open_confirm call.
 283  */
 284 struct nfs_open_confirmargs {
 285         const struct nfs_fh *   fh;
 286         nfs4_stateid *          stateid;
 287         struct nfs_seqid *      seqid;
 288 };
 289
 290 struct nfs_open_confirmres {
 291         nfs4_stateid            stateid;
 292         struct nfs_seqid *      seqid;
 293 };
 294
 295 /*
 296  * Arguments to the close call.
 297  */
 298 struct nfs_closeargs {
 299         struct nfs_fh *         fh;
 300         nfs4_stateid *          stateid;
 301         struct nfs_seqid *      seqid;
 302         fmode_t                 fmode;
 303         const u32 *             bitmask;
 304         struct nfs4_sequence_args       seq_args;
 305 };
 306
 307 struct nfs_closeres {
 308         nfs4_stateid            stateid;
 309         struct nfs_fattr *      fattr;
 310         struct nfs_seqid *      seqid;
 311         const struct nfs_server *server;
 312         struct nfs4_sequence_res        seq_res;
 313 };
 314 /*
 315  *  * Arguments to the lock,lockt, and locku call.
 316  *   */
 317 struct nfs_lowner {
 318         __u64                   clientid;
 319         __u64                   id;
 320 };
 321
 322 struct nfs_lock_args {
 323         struct nfs_fh *         fh;
 324         struct file_lock *      fl;
 325         struct nfs_seqid *      lock_seqid;
 326         nfs4_stateid *          lock_stateid;
 327         struct nfs_seqid *      open_seqid;
 328         nfs4_stateid *          open_stateid;
 329         struct nfs_lowner       lock_owner;
 330         unsigned char           block : 1;
 331         unsigned char           reclaim : 1;
 332         unsigned char           new_lock_owner : 1;
 333         struct nfs4_sequence_args       seq_args;
 334 };
 335
 336 struct nfs_lock_res {
 337         nfs4_stateid            stateid;
 338         struct nfs_seqid *      lock_seqid;
 339         struct nfs_seqid *      open_seqid;
 340         struct nfs4_sequence_res        seq_res;
 341 };
 342
 343 struct nfs_locku_args {
 344         struct nfs_fh *         fh;
 345         struct file_lock *      fl;
 346         struct nfs_seqid *      seqid;
 347         nfs4_stateid *          stateid;
 348         struct nfs4_sequence_args       seq_args;
 349 };
 350
 351 struct nfs_locku_res {
 352         nfs4_stateid            stateid;
 353         struct nfs_seqid *      seqid;
 354         struct nfs4_sequence_res        seq_res;
 355 };
 356
 357 struct nfs_lockt_args {
 358         struct nfs_fh *         fh;
 359         struct file_lock *      fl;
 360         struct nfs_lowner       lock_owner;
 361         struct nfs4_sequence_args       seq_args;
 362 };
 363
 364 struct nfs_lockt_res {
 365         struct file_lock *      denied; /* LOCK, LOCKT failed */
 366         struct nfs4_sequence_res        seq_res;
 367 };
 368
 369 struct nfs_release_lockowner_args {
 370         struct nfs_lowner       lock_owner;
 371 };
 372
 373 struct nfs4_delegreturnargs {
 374         const struct nfs_fh *fhandle;
 375         const nfs4_stateid *stateid;
 376         const u32 * bitmask;
 377         struct nfs4_sequence_args       seq_args;
 378 };
 379
 380 struct nfs4_delegreturnres {
 381         struct nfs_fattr * fattr;
 382         const struct nfs_server *server;
 383         struct nfs4_sequence_res        seq_res;
 384 };
 385
 386 /*
 387  * Arguments to the read call.
 388  */
 389 struct nfs_readargs {
 390         struct nfs_fh *         fh;
 391         struct nfs_open_context *context;
 392         struct nfs_lock_context *lock_context;
 393         __u64                   offset;
 394         __u32                   count;
 395         unsigned int            pgbase;
 396         struct page **          pages;
 397         struct nfs4_sequence_args       seq_args;
 398 };
 399
 400 struct nfs_readres {
 401         struct nfs_fattr *      fattr;
 402         __u32                   count;
 403         int                     eof;
 404         struct nfs4_sequence_res        seq_res;
 405 };
 406
 407 /*
 408  * Arguments to the write call.
 409  */
 410 struct nfs_writeargs {
 411         struct nfs_fh *         fh;
 412         struct nfs_open_context *context;
 413         struct nfs_lock_context *lock_context;
 414         __u64                   offset;
 415         __u32                   count;
 416         enum nfs3_stable_how    stable;
 417         unsigned int            pgbase;
 418         struct page **          pages;
 419         const u32 *             bitmask;
 420         struct nfs4_sequence_args       seq_args;
 421 };
 422
 423 struct nfs_writeverf {
 424         enum nfs3_stable_how    committed;
 425         __be32                  verifier[2];
 426 };
 427
 428 struct nfs_writeres {
 429         struct nfs_fattr *      fattr;
 430         struct nfs_writeverf *  verf;
 431         __u32                   count;
 432         const struct nfs_server *server;
 433         struct nfs4_sequence_res        seq_res;
 434 };
 435
 436 /*
 437  * Common arguments to the unlink call
 438  */
 439 struct nfs_removeargs {
 440         const struct nfs_fh     *fh;
 441         struct qstr             name;
 442         const u32 *             bitmask;
 443         struct nfs4_sequence_args       seq_args;
 444 };
 445
 446 struct nfs_removeres {
 447         const struct nfs_server *server;
 448         struct nfs_fattr        *dir_attr;
 449         struct nfs4_change_info cinfo;
 450         struct nfs4_sequence_res        seq_res;
 451 };
 452
 453 /*
 454  * Common arguments to the rename call
 455  */
 456 struct nfs_renameargs {
 457         const struct nfs_fh             *old_dir;
 458         const struct nfs_fh             *new_dir;
 459         const struct qstr               *old_name;
 460         const struct qstr               *new_name;
 461         const u32                       *bitmask;
 462         struct nfs4_sequence_args       seq_args;
 463 };
 464
 465 struct nfs_renameres {
 466         const struct nfs_server         *server;
 467         struct nfs4_change_info         old_cinfo;
 468         struct nfs_fattr                *old_fattr;
 469         struct nfs4_change_info         new_cinfo;
 470         struct nfs_fattr                *new_fattr;
 471         struct nfs4_sequence_res        seq_res;
 472 };
 473
 474 /*
 475  * Argument struct for decode_entry function
 476  */
 477 struct nfs_entry {
 478         __u64                   ino;
 479         __u64                   cookie,
 480                                 prev_cookie;
 481         const char *            name;
 482         unsigned int            len;
 483         int                     eof;
 484         struct nfs_fh *         fh;
 485         struct nfs_fattr *      fattr;
 486 };
 487
 488 /*
 489  * The following types are for NFSv2 only.
 490  */
 491 struct nfs_sattrargs {
 492         struct nfs_fh *         fh;
 493         struct iattr *          sattr;
 494 };
 495
 496 struct nfs_diropargs {
 497         struct nfs_fh *         fh;
 498         const char *            name;
 499         unsigned int            len;
 500 };
 501
 502 struct nfs_createargs {
 503         struct nfs_fh *         fh;
 504         const char *            name;
 505         unsigned int            len;
 506         struct iattr *          sattr;
 507 };
 508
 509 struct nfs_setattrargs {
 510         struct nfs_fh *                 fh;
 511         nfs4_stateid                    stateid;
 512         struct iattr *                  iap;
 513         const struct nfs_server *       server; /* Needed for name mapping */
 514         const u32 *                     bitmask;
 515         struct nfs4_sequence_args       seq_args;
 516 };
 517
 518 struct nfs_setaclargs {
 519         struct nfs_fh *                 fh;
 520         size_t                          acl_len;
 521         unsigned int                    acl_pgbase;
 522         struct page **                  acl_pages;
 523         struct nfs4_sequence_args       seq_args;
 524 };
 525
 526 struct nfs_setaclres {
 527         struct nfs4_sequence_res        seq_res;
 528 };
 529
 530 struct nfs_getaclargs {
 531         struct nfs_fh *                 fh;
 532         size_t                          acl_len;
 533         unsigned int                    acl_pgbase;
 534         struct page **                  acl_pages;
 535         struct nfs4_sequence_args       seq_args;
 536 };
 537
 538 struct nfs_getaclres {
 539         size_t                          acl_len;
 540         struct nfs4_sequence_res        seq_res;
 541 };
 542
 543 struct nfs_setattrres {
 544         struct nfs_fattr *              fattr;
 545         const struct nfs_server *       server;
 546         struct nfs4_sequence_res        seq_res;
 547 };
 548
 549 struct nfs_linkargs {
 550         struct nfs_fh *         fromfh;
 551         struct nfs_fh *         tofh;
 552         const char *            toname;
 553         unsigned int            tolen;
 554 };
 555
 556 struct nfs_symlinkargs {
 557         struct nfs_fh *         fromfh;
 558         const char *            fromname;
 559         unsigned int            fromlen;
 560         struct page **          pages;
 561         unsigned int            pathlen;
 562         struct iattr *          sattr;
 563 };
 564
 565 struct nfs_readdirargs {
 566         struct nfs_fh *         fh;
 567         __u32                   cookie;
 568         unsigned int            count;
 569         struct page **          pages;
 570 };
 571
 572 struct nfs3_getaclargs {
 573         struct nfs_fh *         fh;
 574         int                     mask;
 575         struct page **          pages;
 576 };
 577
 578 struct nfs3_setaclargs {
 579         struct inode *          inode;
 580         int                     mask;
 581         struct posix_acl *      acl_access;
 582         struct posix_acl *      acl_default;
 583         size_t                  len;
 584         unsigned int            npages;
 585         struct page **          pages;
 586 };
 587
 588 struct nfs_diropok {
 589         struct nfs_fh *         fh;
 590         struct nfs_fattr *      fattr;
 591 };
 592
 593 struct nfs_readlinkargs {
 594         struct nfs_fh *         fh;
 595         unsigned int            pgbase;
 596         unsigned int            pglen;
 597         struct page **          pages;
 598 };
 599
 600 struct nfs3_sattrargs {
 601         struct nfs_fh *         fh;
 602         struct iattr *          sattr;
 603         unsigned int            guard;
 604         struct timespec         guardtime;
 605 };
 606
 607 struct nfs3_diropargs {
 608         struct nfs_fh *         fh;
 609         const char *            name;
 610         unsigned int            len;
 611 };
 612
 613 struct nfs3_accessargs {
 614         struct nfs_fh *         fh;
 615         __u32                   access;
 616 };
 617
 618 struct nfs3_createargs {
 619         struct nfs_fh *         fh;
 620         const char *            name;
 621         unsigned int            len;
 622         struct iattr *          sattr;
 623         enum nfs3_createmode    createmode;
 624         __be32                  verifier[2];
 625 };
 626
 627 struct nfs3_mkdirargs {
 628         struct nfs_fh *         fh;
 629         const char *            name;
 630         unsigned int            len;
 631         struct iattr *          sattr;
 632 };
 633
 634 struct nfs3_symlinkargs {
 635         struct nfs_fh *         fromfh;
 636         const char *            fromname;
 637         unsigned int            fromlen;
 638         struct page **          pages;
 639         unsigned int            pathlen;
 640         struct iattr *          sattr;
 641 };
 642
 643 struct nfs3_mknodargs {
 644         struct nfs_fh *         fh;
 645         const char *            name;
 646         unsigned int            len;
 647         enum nfs3_ftype         type;
 648         struct iattr *          sattr;
 649         dev_t                   rdev;
 650 };
 651
 652 struct nfs3_linkargs {
 653         struct nfs_fh *         fromfh;
 654         struct nfs_fh *         tofh;
 655         const char *            toname;
 656         unsigned int            tolen;
 657 };
 658
 659 struct nfs3_readdirargs {
 660         struct nfs_fh *         fh;
 661         __u64                   cookie;
 662         __be32                  verf[2];
 663         int                     plus;
 664         unsigned int            count;
 665         struct page **          pages;
 666 };
 667
 668 struct nfs3_diropres {
 669         struct nfs_fattr *      dir_attr;
 670         struct nfs_fh *         fh;
 671         struct nfs_fattr *      fattr;
 672 };
 673
 674 struct nfs3_accessres {
 675         struct nfs_fattr *      fattr;
 676         __u32                   access;
 677 };
 678
 679 struct nfs3_readlinkargs {
 680         struct nfs_fh *         fh;
 681         unsigned int            pgbase;
 682         unsigned int            pglen;
 683         struct page **          pages;
 684 };
 685
 686 struct nfs3_linkres {
 687         struct nfs_fattr *      dir_attr;
 688         struct nfs_fattr *      fattr;
 689 };
 690
 691 struct nfs3_readdirres {
 692         struct nfs_fattr *      dir_attr;
 693         __be32 *                verf;
 694         int                     plus;
 695 };
 696
 697 struct nfs3_getaclres {
 698         struct nfs_fattr *      fattr;
 699         int                     mask;
 700         unsigned int            acl_access_count;
 701         unsigned int            acl_default_count;
 702         struct posix_acl *      acl_access;
 703         struct posix_acl *      acl_default;
 704 };
 705
 706 #ifdef CONFIG_NFS_V4
 707
 708 typedef u64 clientid4;
 709
 710 struct nfs4_accessargs {
 711         const struct nfs_fh *           fh;
 712         const u32 *                     bitmask;
 713         u32                             access;
 714         struct nfs4_sequence_args       seq_args;
 715 };
 716
 717 struct nfs4_accessres {
 718         const struct nfs_server *       server;
 719         struct nfs_fattr *              fattr;
 720         u32                             supported;
 721         u32                             access;
 722         struct nfs4_sequence_res        seq_res;
 723 };
 724
 725 struct nfs4_create_arg {
 726         u32                             ftype;
 727         union {
 728                 struct {
 729                         struct page **  pages;
 730                         unsigned int    len;
 731                 } symlink;   /* NF4LNK */
 732                 struct {
 733                         u32             specdata1;
 734                         u32             specdata2;
 735                 } device;    /* NF4BLK, NF4CHR */
 736         } u;
 737         const struct qstr *             name;
 738         const struct nfs_server *       server;
 739         const struct iattr *            attrs;
 740         const struct nfs_fh *           dir_fh;
 741         const u32 *                     bitmask;
 742         struct nfs4_sequence_args       seq_args;
 743 };
 744
 745 struct nfs4_create_res {
 746         const struct nfs_server *       server;
 747         struct nfs_fh *                 fh;
 748         struct nfs_fattr *              fattr;
 749         struct nfs4_change_info         dir_cinfo;
 750         struct nfs_fattr *              dir_fattr;
 751         struct nfs4_sequence_res        seq_res;
 752 };
 753
 754 struct nfs4_fsinfo_arg {
 755         const struct nfs_fh *           fh;
 756         const u32 *                     bitmask;
 757         struct nfs4_sequence_args       seq_args;
 758 };
 759
 760 struct nfs4_fsinfo_res {
 761         struct nfs_fsinfo              *fsinfo;
 762         struct nfs4_sequence_res        seq_res;
 763 };
 764
 765 struct nfs4_getattr_arg {
 766         const struct nfs_fh *           fh;
 767         const u32 *                     bitmask;
 768         struct nfs4_sequence_args       seq_args;
 769 };
 770
 771 struct nfs4_getattr_res {
 772         const struct nfs_server *       server;
 773         struct nfs_fattr *              fattr;
 774         struct nfs4_sequence_res        seq_res;
 775 };
 776
 777 struct nfs4_link_arg {
 778         const struct nfs_fh *           fh;
 779         const struct nfs_fh *           dir_fh;
 780         const struct qstr *             name;
 781         const u32 *                     bitmask;
 782         struct nfs4_sequence_args       seq_args;
 783 };
 784
 785 struct nfs4_link_res {
 786         const struct nfs_server *       server;
 787         struct nfs_fattr *              fattr;
 788         struct nfs4_change_info         cinfo;
 789         struct nfs_fattr *              dir_attr;
 790         struct nfs4_sequence_res        seq_res;
 791 };
 792
 793
 794 struct nfs4_lookup_arg {
 795         const struct nfs_fh *           dir_fh;
 796         const struct qstr *             name;
 797         const u32 *                     bitmask;
 798         struct nfs4_sequence_args       seq_args;
 799 };
 800
 801 struct nfs4_lookup_res {
 802         const struct nfs_server *       server;
 803         struct nfs_fattr *              fattr;
 804         struct nfs_fh *                 fh;
 805         struct nfs4_sequence_res        seq_res;
 806 };
 807
 808 struct nfs4_lookup_root_arg {
 809         const u32 *                     bitmask;
 810         struct nfs4_sequence_args       seq_args;
 811 };
 812
 813 struct nfs4_pathconf_arg {
 814         const struct nfs_fh *           fh;
 815         const u32 *                     bitmask;
 816         struct nfs4_sequence_args       seq_args;
 817 };
 818
 819 struct nfs4_pathconf_res {
 820         struct nfs_pathconf            *pathconf;
 821         struct nfs4_sequence_res        seq_res;
 822 };
 823
 824 struct nfs4_readdir_arg {
 825         const struct nfs_fh *           fh;
 826         u64                             cookie;
 827         nfs4_verifier                   verifier;
 828         u32                             count;
 829         struct page **                  pages;  /* zero-copy data */
 830         unsigned int                    pgbase; /* zero-copy data */
 831         const u32 *                     bitmask;
 832         int                             plus;
 833         struct nfs4_sequence_args       seq_args;
 834 };
 835
 836 struct nfs4_readdir_res {
 837         nfs4_verifier                   verifier;
 838         unsigned int                    pgbase;
 839         struct nfs4_sequence_res        seq_res;
 840 };
 841
 842 struct nfs4_readlink {
 843         const struct nfs_fh *           fh;
 844         unsigned int                    pgbase;
 845         unsigned int                    pglen;   /* zero-copy data */
 846         struct page **                  pages;   /* zero-copy data */
 847         struct nfs4_sequence_args       seq_args;
 848 };
 849
 850 struct nfs4_readlink_res {
 851         struct nfs4_sequence_res        seq_res;
 852 };
 853
 854 #define NFS4_SETCLIENTID_NAMELEN        (127)
 855 struct nfs4_setclientid {
 856         const nfs4_verifier *           sc_verifier;
 857         unsigned int                    sc_name_len;
 858         char                            sc_name[NFS4_SETCLIENTID_NAMELEN + 1];
 859         u32                             sc_prog;
 860         unsigned int                    sc_netid_len;
 861         char                            sc_netid[RPCBIND_MAXNETIDLEN + 1];
 862         unsigned int                    sc_uaddr_len;
 863         char                            sc_uaddr[RPCBIND_MAXUADDRLEN + 1];
 864         u32                             sc_cb_ident;
 865 };
 866
 867 struct nfs4_setclientid_res {
 868         u64                             clientid;
 869         nfs4_verifier                   confirm;
 870 };
 871
 872 struct nfs4_statfs_arg {
 873         const struct nfs_fh *           fh;
 874         const u32 *                     bitmask;
 875         struct nfs4_sequence_args       seq_args;
 876 };
 877
 878 struct nfs4_statfs_res {
 879         struct nfs_fsstat              *fsstat;
 880         struct nfs4_sequence_res        seq_res;
 881 };
 882
 883 struct nfs4_server_caps_arg {
 884         struct nfs_fh                  *fhandle;
 885         struct nfs4_sequence_args       seq_args;
 886 };
 887
 888 struct nfs4_server_caps_res {
 889         u32                             attr_bitmask[2];
 890         u32                             acl_bitmask;
 891         u32                             has_links;
 892         u32                             has_symlinks;
 893         struct nfs4_sequence_res        seq_res;
 894 };
 895
 896 struct nfs4_string {
 897         unsigned int len;
 898         char *data;
 899 };
 900
 901 #define NFS4_PATHNAME_MAXCOMPONENTS 512
 902 struct nfs4_pathname {
 903         unsigned int ncomponents;
 904         struct nfs4_string components[NFS4_PATHNAME_MAXCOMPONENTS];
 905 };
 906
 907 #define NFS4_FS_LOCATION_MAXSERVERS 10
 908 struct nfs4_fs_location {
 909         unsigned int nservers;
 910         struct nfs4_string servers[NFS4_FS_LOCATION_MAXSERVERS];
 911         struct nfs4_pathname rootpath;
 912 };
 913
 914 #define NFS4_FS_LOCATIONS_MAXENTRIES 10
 915 struct nfs4_fs_locations {
 916         struct nfs_fattr fattr;
 917         const struct nfs_server *server;
 918         struct nfs4_pathname fs_path;
 919         int nlocations;
 920         struct nfs4_fs_location locations[NFS4_FS_LOCATIONS_MAXENTRIES];
 921 };
 922
 923 struct nfs4_fs_locations_arg {
 924         const struct nfs_fh *dir_fh;
 925         const struct qstr *name;
 926         struct page *page;
 927         const u32 *bitmask;
 928         struct nfs4_sequence_args       seq_args;
 929 };
 930
 931 struct nfs4_fs_locations_res {
 932         struct nfs4_fs_locations       *fs_locations;
 933         struct nfs4_sequence_res        seq_res;
 934 };
 935
 936 #endif /* CONFIG_NFS_V4 */
 937
 938 struct nfstime4 {
 939         u64     seconds;
 940         u32     nseconds;
 941 };
 942
 943 #ifdef CONFIG_NFS_V4_1
 944 struct nfs_impl_id4 {
 945         u32             domain_len;
 946         char            *domain;
 947         u32             name_len;
 948         char            *name;
 949         struct nfstime4 date;
 950 };
 951
 952 #define NFS4_EXCHANGE_ID_LEN    (48)
 953 struct nfs41_exchange_id_args {
 954         struct nfs_client               *client;
 955         nfs4_verifier                   *verifier;
 956         unsigned int                    id_len;
 957         char                            id[NFS4_EXCHANGE_ID_LEN];
 958         u32                             flags;
 959 };
 960
 961 struct server_owner {
 962         uint64_t                        minor_id;
 963         uint32_t                        major_id_sz;
 964         char                            major_id[NFS4_OPAQUE_LIMIT];
 965 };
 966
 967 struct server_scope {
 968         uint32_t                        server_scope_sz;
 969         char                            server_scope[NFS4_OPAQUE_LIMIT];
 970 };
 971
 972 struct nfs41_exchange_id_res {
 973         struct nfs_client               *client;
 974         u32                             flags;
 975 };
 976
 977 struct nfs41_create_session_args {
 978         struct nfs_client              *client;
 979         uint32_t                        flags;
 980         uint32_t                        cb_program;
 981         struct nfs4_channel_attrs       fc_attrs;       /* Fore Channel */
 982         struct nfs4_channel_attrs       bc_attrs;       /* Back Channel */
 983 };
 984
 985 struct nfs41_create_session_res {
 986         struct nfs_client              *client;
 987 };
 988
 989 struct nfs41_reclaim_complete_args {
 990         /* In the future extend to include curr_fh for use with migration */
 991         unsigned char                   one_fs:1;
 992         struct nfs4_sequence_args       seq_args;
 993 };
 994
 995 struct nfs41_reclaim_complete_res {
 996         struct nfs4_sequence_res        seq_res;
 997 };
 998 #endif /* CONFIG_NFS_V4_1 */
 999
1000 struct nfs_page;
1001
1002 #define NFS_PAGEVEC_SIZE        (8U)
1003
1004 struct nfs_read_data {
1005         int                     flags;
1006         struct rpc_task         task;
1007         struct inode            *inode;
1008         struct rpc_cred         *cred;
1009         struct nfs_fattr        fattr;  /* fattr storage */
1010         struct list_head        pages;  /* Coalesced read requests */
1011         struct nfs_page         *req;   /* multi ops per nfs_page */
1012         struct page             **pagevec;
1013         unsigned int            npages; /* Max length of pagevec */
1014         struct nfs_readargs args;
1015         struct nfs_readres  res;
1016 #ifdef CONFIG_NFS_V4
1017         unsigned long           timestamp;      /* For lease renewal */
1018 #endif
1019         struct page             *page_array[NFS_PAGEVEC_SIZE];
1020 };
1021
1022 struct nfs_write_data {
1023         int                     flags;
1024         struct rpc_task         task;
1025         struct inode            *inode;
1026         struct rpc_cred         *cred;
1027         struct nfs_fattr        fattr;
1028         struct nfs_writeverf    verf;
1029         struct list_head        pages;          /* Coalesced requests we wish to flush */
1030         struct nfs_page         *req;           /* multi ops per nfs_page */
1031         struct page             **pagevec;
1032         unsigned int            npages;         /* Max length of pagevec */
1033         struct nfs_writeargs    args;           /* argument struct */
1034         struct nfs_writeres     res;            /* result struct */
1035 #ifdef CONFIG_NFS_V4
1036         unsigned long           timestamp;      /* For lease renewal */
1037 #endif
1038         struct page             *page_array[NFS_PAGEVEC_SIZE];
1039 };
1040
1041 struct nfs_access_entry;
1042
1043 /*
1044  * RPC procedure vector for NFSv2/NFSv3 demuxing
1045  */
1046 struct nfs_rpc_ops {
1047         u32     version;                /* Protocol version */
1048         const struct dentry_operations *dentry_ops;
1049         const struct inode_operations *dir_inode_ops;
1050         const struct inode_operations *file_inode_ops;
1051
1052         int     (*getroot) (struct nfs_server *, struct nfs_fh *,
1053                             struct nfs_fsinfo *);
1054         int     (*lookupfh)(struct nfs_server *, struct nfs_fh *,
1055                             struct qstr *, struct nfs_fh *,
1056                             struct nfs_fattr *);
1057         int     (*getattr) (struct nfs_server *, struct nfs_fh *,
1058                             struct nfs_fattr *);
1059         int     (*setattr) (struct dentry *, struct nfs_fattr *,
1060                             struct iattr *);
1061         int     (*lookup)  (struct inode *, struct qstr *,
1062                             struct nfs_fh *, struct nfs_fattr *);
1063         int     (*access)  (struct inode *, struct nfs_access_entry *);
1064         int     (*readlink)(struct inode *, struct page *, unsigned int,
1065                             unsigned int);
1066         int     (*create)  (struct inode *, struct dentry *,
1067                             struct iattr *, int, struct nfs_open_context *);
1068         int     (*remove)  (struct inode *, struct qstr *);
1069         void    (*unlink_setup)  (struct rpc_message *, struct inode *dir);
1070         int     (*unlink_done) (struct rpc_task *, struct inode *);
1071         int     (*rename)  (struct inode *, struct qstr *,
1072                             struct inode *, struct qstr *);
1073         void    (*rename_setup)  (struct rpc_message *msg, struct inode *dir);
1074         int     (*rename_done) (struct rpc_task *task, struct inode *old_dir, struct inode *new_dir);
1075         int     (*link)    (struct inode *, struct inode *, struct qstr *);
1076         int     (*symlink) (struct inode *, struct dentry *, struct page *,
1077                             unsigned int, struct iattr *);
1078         int     (*mkdir)   (struct inode *, struct dentry *, struct iattr *);
1079         int     (*rmdir)   (struct inode *, struct qstr *);
1080         int     (*readdir) (struct dentry *, struct rpc_cred *,
1081                             u64, struct page **, unsigned int, int);
1082         int     (*mknod)   (struct inode *, struct dentry *, struct iattr *,
1083                             dev_t);
1084         int     (*statfs)  (struct nfs_server *, struct nfs_fh *,
1085                             struct nfs_fsstat *);
1086         int     (*fsinfo)  (struct nfs_server *, struct nfs_fh *,
1087                             struct nfs_fsinfo *);
1088         int     (*pathconf) (struct nfs_server *, struct nfs_fh *,
1089                              struct nfs_pathconf *);
1090         int     (*set_capabilities)(struct nfs_server *, struct nfs_fh *);
1091         __be32 *(*decode_dirent)(struct xdr_stream *, struct nfs_entry *, struct nfs_server *, int plus);
1092         void    (*read_setup)   (struct nfs_read_data *, struct rpc_message *);
1093         int     (*read_done)  (struct rpc_task *, struct nfs_read_data *);
1094         void    (*write_setup)  (struct nfs_write_data *, struct rpc_message *);
1095         int     (*write_done)  (struct rpc_task *, struct nfs_write_data *);
1096         void    (*commit_setup) (struct nfs_write_data *, struct rpc_message *);
1097         int     (*commit_done) (struct rpc_task *, struct nfs_write_data *);
1098         int     (*lock)(struct file *, int, struct file_lock *);
1099         int     (*lock_check_bounds)(const struct file_lock *);
1100         void    (*clear_acl_cache)(struct inode *);
1101         void    (*close_context)(struct nfs_open_context *ctx, int);
1102         struct inode * (*open_context) (struct inode *dir,
1103                                 struct nfs_open_context *ctx,
1104                                 int open_flags,
1105                                 struct iattr *iattr);
1106 };
1107
1108 /*
1109  *      NFS_CALL(getattr, inode, (fattr));
1110  * into
1111  *      NFS_PROTO(inode)->getattr(fattr);
1112  */
1113 #define NFS_CALL(op, inode, args)       NFS_PROTO(inode)->op args
1114
1115 /*
1116  * Function vectors etc. for the NFS client
1117  */
1118 extern const struct nfs_rpc_ops nfs_v2_clientops;
1119 extern const struct nfs_rpc_ops nfs_v3_clientops;
1120 extern const struct nfs_rpc_ops nfs_v4_clientops;
1121 extern struct rpc_version       nfs_version2;
1122 extern struct rpc_version       nfs_version3;
1123 extern struct rpc_version       nfs_version4;
1124
1125 extern struct rpc_version       nfsacl_version3;
1126 extern struct rpc_program       nfsacl_program;
1127
1128 #endif