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 #include <linux/sunrpc/gss_api.h>
   7
   8 /*
   9  * To change the maximum rsize and wsize supported by the NFS client, adjust
  10  * NFS_MAX_FILE_IO_SIZE.  64KB is a typical maximum, but some servers can
  11  * support a megabyte or more.  The default is left at 4096 bytes, which is
  12  * reasonable for NFS over UDP.
  13  */
  14 #define NFS_MAX_FILE_IO_SIZE    (1048576U)
  15 #define NFS_DEF_FILE_IO_SIZE    (4096U)
  16 #define NFS_MIN_FILE_IO_SIZE    (1024U)
  17
  18 /* Forward declaration for NFS v3 */
  19 struct nfs4_secinfo_flavors;
  20
  21 struct nfs_fsid {
  22         uint64_t                major;
  23         uint64_t                minor;
  24 };
  25
  26 /*
  27  * Helper for checking equality between 2 fsids.
  28  */
  29 static inline int nfs_fsid_equal(const struct nfs_fsid *a, const struct nfs_fsid *b)
  30 {
  31         return a->major == b->major && a->minor == b->minor;
  32 }
  33
  34 struct nfs_fattr {
  35         unsigned int            valid;          /* which fields are valid */
  36         umode_t                 mode;
  37         __u32                   nlink;
  38         __u32                   uid;
  39         __u32                   gid;
  40         dev_t                   rdev;
  41         __u64                   size;
  42         union {
  43                 struct {
  44                         __u32   blocksize;
  45                         __u32   blocks;
  46                 } nfs2;
  47                 struct {
  48                         __u64   used;
  49                 } nfs3;
  50         } du;
  51         struct nfs_fsid         fsid;
  52         __u64                   fileid;
  53         __u64                   mounted_on_fileid;
  54         struct timespec         atime;
  55         struct timespec         mtime;
  56         struct timespec         ctime;
  57         __u64                   change_attr;    /* NFSv4 change attribute */
  58         __u64                   pre_change_attr;/* pre-op NFSv4 change attribute */
  59         __u64                   pre_size;       /* pre_op_attr.size       */
  60         struct timespec         pre_mtime;      /* pre_op_attr.mtime      */
  61         struct timespec         pre_ctime;      /* pre_op_attr.ctime      */
  62         unsigned long           time_start;
  63         unsigned long           gencount;
  64 };
  65
  66 #define NFS_ATTR_FATTR_TYPE             (1U << 0)
  67 #define NFS_ATTR_FATTR_MODE             (1U << 1)
  68 #define NFS_ATTR_FATTR_NLINK            (1U << 2)
  69 #define NFS_ATTR_FATTR_OWNER            (1U << 3)
  70 #define NFS_ATTR_FATTR_GROUP            (1U << 4)
  71 #define NFS_ATTR_FATTR_RDEV             (1U << 5)
  72 #define NFS_ATTR_FATTR_SIZE             (1U << 6)
  73 #define NFS_ATTR_FATTR_PRESIZE          (1U << 7)
  74 #define NFS_ATTR_FATTR_BLOCKS_USED      (1U << 8)
  75 #define NFS_ATTR_FATTR_SPACE_USED       (1U << 9)
  76 #define NFS_ATTR_FATTR_FSID             (1U << 10)
  77 #define NFS_ATTR_FATTR_FILEID           (1U << 11)
  78 #define NFS_ATTR_FATTR_ATIME            (1U << 12)
  79 #define NFS_ATTR_FATTR_MTIME            (1U << 13)
  80 #define NFS_ATTR_FATTR_CTIME            (1U << 14)
  81 #define NFS_ATTR_FATTR_PREMTIME         (1U << 15)
  82 #define NFS_ATTR_FATTR_PRECTIME         (1U << 16)
  83 #define NFS_ATTR_FATTR_CHANGE           (1U << 17)
  84 #define NFS_ATTR_FATTR_PRECHANGE        (1U << 18)
  85 #define NFS_ATTR_FATTR_V4_REFERRAL      (1U << 19)      /* NFSv4 referral */
  86 #define NFS_ATTR_FATTR_MOUNTPOINT       (1U << 20)      /* Treat as mountpoint */
  87 #define NFS_ATTR_FATTR_MOUNTED_ON_FILEID                (1U << 21)
  88
  89 #define NFS_ATTR_FATTR (NFS_ATTR_FATTR_TYPE \
  90                 | NFS_ATTR_FATTR_MODE \
  91                 | NFS_ATTR_FATTR_NLINK \
  92                 | NFS_ATTR_FATTR_OWNER \
  93                 | NFS_ATTR_FATTR_GROUP \
  94                 | NFS_ATTR_FATTR_RDEV \
  95                 | NFS_ATTR_FATTR_SIZE \
  96                 | NFS_ATTR_FATTR_FSID \
  97                 | NFS_ATTR_FATTR_FILEID \
  98                 | NFS_ATTR_FATTR_ATIME \
  99                 | NFS_ATTR_FATTR_MTIME \
 100                 | NFS_ATTR_FATTR_CTIME)
 101 #define NFS_ATTR_FATTR_V2 (NFS_ATTR_FATTR \
 102                 | NFS_ATTR_FATTR_BLOCKS_USED)
 103 #define NFS_ATTR_FATTR_V3 (NFS_ATTR_FATTR \
 104                 | NFS_ATTR_FATTR_SPACE_USED)
 105 #define NFS_ATTR_FATTR_V4 (NFS_ATTR_FATTR \
 106                 | NFS_ATTR_FATTR_SPACE_USED \
 107                 | NFS_ATTR_FATTR_CHANGE)
 108
 109 /*
 110  * Info on the file system
 111  */
 112 struct nfs_fsinfo {
 113         struct nfs_fattr        *fattr; /* Post-op attributes */
 114         __u32                   rtmax;  /* max.  read transfer size */
 115         __u32                   rtpref; /* pref. read transfer size */
 116         __u32                   rtmult; /* reads should be multiple of this */
 117         __u32                   wtmax;  /* max.  write transfer size */
 118         __u32                   wtpref; /* pref. write transfer size */
 119         __u32                   wtmult; /* writes should be multiple of this */
 120         __u32                   dtpref; /* pref. readdir transfer size */
 121         __u64                   maxfilesize;
 122         struct timespec         time_delta; /* server time granularity */
 123         __u32                   lease_time; /* in seconds */
 124         __u32                   layouttype; /* supported pnfs layout driver */
 125 };
 126
 127 struct nfs_fsstat {
 128         struct nfs_fattr        *fattr; /* Post-op attributes */
 129         __u64                   tbytes; /* total size in bytes */
 130         __u64                   fbytes; /* # of free bytes */
 131         __u64                   abytes; /* # of bytes available to user */
 132         __u64                   tfiles; /* # of files */
 133         __u64                   ffiles; /* # of free files */
 134         __u64                   afiles; /* # of files available to user */
 135 };
 136
 137 struct nfs2_fsstat {
 138         __u32                   tsize;  /* Server transfer size */
 139         __u32                   bsize;  /* Filesystem block size */
 140         __u32                   blocks; /* No. of "bsize" blocks on filesystem */
 141         __u32                   bfree;  /* No. of free "bsize" blocks */
 142         __u32                   bavail; /* No. of available "bsize" blocks */
 143 };
 144
 145 struct nfs_pathconf {
 146         struct nfs_fattr        *fattr; /* Post-op attributes */
 147         __u32                   max_link; /* max # of hard links */
 148         __u32                   max_namelen; /* max name length */
 149 };
 150
 151 struct nfs4_change_info {
 152         u32                     atomic;
 153         u64                     before;
 154         u64                     after;
 155 };
 156
 157 struct nfs_seqid;
 158
 159 /* nfs41 sessions channel attributes */
 160 struct nfs4_channel_attrs {
 161         u32                     headerpadsz;
 162         u32                     max_rqst_sz;
 163         u32                     max_resp_sz;
 164         u32                     max_resp_sz_cached;
 165         u32                     max_ops;
 166         u32                     max_reqs;
 167 };
 168
 169 /* nfs41 sessions slot seqid */
 170 struct nfs4_slot {
 171         u32                     seq_nr;
 172 };
 173
 174 struct nfs4_sequence_args {
 175         struct nfs4_session     *sa_session;
 176         u8                      sa_slotid;
 177         u8                      sa_cache_this;
 178 };
 179
 180 struct nfs4_sequence_res {
 181         struct nfs4_session     *sr_session;
 182         struct nfs4_slot        *sr_slot;       /* slot used to send request */
 183         int                     sr_status;      /* sequence operation status */
 184         unsigned long           sr_renewal_time;
 185         u32                     sr_status_flags;
 186 };
 187
 188 struct nfs4_get_lease_time_args {
 189         struct nfs4_sequence_args       la_seq_args;
 190 };
 191
 192 struct nfs4_get_lease_time_res {
 193         struct nfs_fsinfo              *lr_fsinfo;
 194         struct nfs4_sequence_res        lr_seq_res;
 195 };
 196
 197 #define PNFS_LAYOUT_MAXSIZE 4096
 198
 199 struct nfs4_layoutdriver_data {
 200         struct page **pages;
 201         __u32 pglen;
 202         __u32 len;
 203 };
 204
 205 struct pnfs_layout_range {
 206         u32 iomode;
 207         u64 offset;
 208         u64 length;
 209 };
 210
 211 struct nfs4_layoutget_args {
 212         __u32 type;
 213         struct pnfs_layout_range range;
 214         __u64 minlength;
 215         __u32 maxcount;
 216         struct inode *inode;
 217         struct nfs_open_context *ctx;
 218         struct nfs4_sequence_args seq_args;
 219         nfs4_stateid stateid;
 220         struct nfs4_layoutdriver_data layout;
 221 };
 222
 223 struct nfs4_layoutget_res {
 224         __u32 return_on_close;
 225         struct pnfs_layout_range range;
 226         __u32 type;
 227         nfs4_stateid stateid;
 228         struct nfs4_sequence_res seq_res;
 229         struct nfs4_layoutdriver_data *layoutp;
 230 };
 231
 232 struct nfs4_layoutget {
 233         struct nfs4_layoutget_args args;
 234         struct nfs4_layoutget_res res;
 235         struct pnfs_layout_segment **lsegpp;
 236         gfp_t gfp_flags;
 237 };
 238
 239 struct nfs4_getdeviceinfo_args {
 240         struct pnfs_device *pdev;
 241         struct nfs4_sequence_args seq_args;
 242 };
 243
 244 struct nfs4_getdeviceinfo_res {
 245         struct pnfs_device *pdev;
 246         struct nfs4_sequence_res seq_res;
 247 };
 248
 249 struct nfs4_layoutcommit_args {
 250         nfs4_stateid stateid;
 251         __u64 lastbytewritten;
 252         struct inode *inode;
 253         const u32 *bitmask;
 254         struct nfs4_sequence_args seq_args;
 255 };
 256
 257 struct nfs4_layoutcommit_res {
 258         struct nfs_fattr *fattr;
 259         const struct nfs_server *server;
 260         struct nfs4_sequence_res seq_res;
 261 };
 262
 263 struct nfs4_layoutcommit_data {
 264         struct rpc_task task;
 265         struct nfs_fattr fattr;
 266         struct pnfs_layout_segment *lseg;
 267         struct rpc_cred *cred;
 268         struct nfs4_layoutcommit_args args;
 269         struct nfs4_layoutcommit_res res;
 270 };
 271
 272 /*
 273  * Arguments to the open call.
 274  */
 275 struct nfs_openargs {
 276         const struct nfs_fh *   fh;
 277         struct nfs_seqid *      seqid;
 278         int                     open_flags;
 279         fmode_t                 fmode;
 280         __u64                   clientid;
 281         __u64                   id;
 282         union {
 283                 struct {
 284                         struct iattr *  attrs;    /* UNCHECKED, GUARDED */
 285                         nfs4_verifier   verifier; /* EXCLUSIVE */
 286                 };
 287                 nfs4_stateid    delegation;             /* CLAIM_DELEGATE_CUR */
 288                 fmode_t         delegation_type;        /* CLAIM_PREVIOUS */
 289         } u;
 290         const struct qstr *     name;
 291         const struct nfs_server *server;         /* Needed for ID mapping */
 292         const u32 *             bitmask;
 293         __u32                   claim;
 294         struct nfs4_sequence_args       seq_args;
 295 };
 296
 297 struct nfs_openres {
 298         nfs4_stateid            stateid;
 299         struct nfs_fh           fh;
 300         struct nfs4_change_info cinfo;
 301         __u32                   rflags;
 302         struct nfs_fattr *      f_attr;
 303         struct nfs_fattr *      dir_attr;
 304         struct nfs_seqid *      seqid;
 305         const struct nfs_server *server;
 306         fmode_t                 delegation_type;
 307         nfs4_stateid            delegation;
 308         __u32                   do_recall;
 309         __u64                   maxsize;
 310         __u32                   attrset[NFS4_BITMAP_SIZE];
 311         struct nfs4_sequence_res        seq_res;
 312 };
 313
 314 /*
 315  * Arguments to the open_confirm call.
 316  */
 317 struct nfs_open_confirmargs {
 318         const struct nfs_fh *   fh;
 319         nfs4_stateid *          stateid;
 320         struct nfs_seqid *      seqid;
 321 };
 322
 323 struct nfs_open_confirmres {
 324         nfs4_stateid            stateid;
 325         struct nfs_seqid *      seqid;
 326 };
 327
 328 /*
 329  * Arguments to the close call.
 330  */
 331 struct nfs_closeargs {
 332         struct nfs_fh *         fh;
 333         nfs4_stateid *          stateid;
 334         struct nfs_seqid *      seqid;
 335         fmode_t                 fmode;
 336         const u32 *             bitmask;
 337         struct nfs4_sequence_args       seq_args;
 338 };
 339
 340 struct nfs_closeres {
 341         nfs4_stateid            stateid;
 342         struct nfs_fattr *      fattr;
 343         struct nfs_seqid *      seqid;
 344         const struct nfs_server *server;
 345         struct nfs4_sequence_res        seq_res;
 346 };
 347 /*
 348  *  * Arguments to the lock,lockt, and locku call.
 349  *   */
 350 struct nfs_lowner {
 351         __u64                   clientid;
 352         __u64                   id;
 353         dev_t                   s_dev;
 354 };
 355
 356 struct nfs_lock_args {
 357         struct nfs_fh *         fh;
 358         struct file_lock *      fl;
 359         struct nfs_seqid *      lock_seqid;
 360         nfs4_stateid *          lock_stateid;
 361         struct nfs_seqid *      open_seqid;
 362         nfs4_stateid *          open_stateid;
 363         struct nfs_lowner       lock_owner;
 364         unsigned char           block : 1;
 365         unsigned char           reclaim : 1;
 366         unsigned char           new_lock_owner : 1;
 367         struct nfs4_sequence_args       seq_args;
 368 };
 369
 370 struct nfs_lock_res {
 371         nfs4_stateid            stateid;
 372         struct nfs_seqid *      lock_seqid;
 373         struct nfs_seqid *      open_seqid;
 374         struct nfs4_sequence_res        seq_res;
 375 };
 376
 377 struct nfs_locku_args {
 378         struct nfs_fh *         fh;
 379         struct file_lock *      fl;
 380         struct nfs_seqid *      seqid;
 381         nfs4_stateid *          stateid;
 382         struct nfs4_sequence_args       seq_args;
 383 };
 384
 385 struct nfs_locku_res {
 386         nfs4_stateid            stateid;
 387         struct nfs_seqid *      seqid;
 388         struct nfs4_sequence_res        seq_res;
 389 };
 390
 391 struct nfs_lockt_args {
 392         struct nfs_fh *         fh;
 393         struct file_lock *      fl;
 394         struct nfs_lowner       lock_owner;
 395         struct nfs4_sequence_args       seq_args;
 396 };
 397
 398 struct nfs_lockt_res {
 399         struct file_lock *      denied; /* LOCK, LOCKT failed */
 400         struct nfs4_sequence_res        seq_res;
 401 };
 402
 403 struct nfs_release_lockowner_args {
 404         struct nfs_lowner       lock_owner;
 405 };
 406
 407 struct nfs4_delegreturnargs {
 408         const struct nfs_fh *fhandle;
 409         const nfs4_stateid *stateid;
 410         const u32 * bitmask;
 411         struct nfs4_sequence_args       seq_args;
 412 };
 413
 414 struct nfs4_delegreturnres {
 415         struct nfs_fattr * fattr;
 416         const struct nfs_server *server;
 417         struct nfs4_sequence_res        seq_res;
 418 };
 419
 420 /*
 421  * Arguments to the read call.
 422  */
 423 struct nfs_readargs {
 424         struct nfs_fh *         fh;
 425         struct nfs_open_context *context;
 426         struct nfs_lock_context *lock_context;
 427         __u64                   offset;
 428         __u32                   count;
 429         unsigned int            pgbase;
 430         struct page **          pages;
 431         struct nfs4_sequence_args       seq_args;
 432 };
 433
 434 struct nfs_readres {
 435         struct nfs_fattr *      fattr;
 436         __u32                   count;
 437         int                     eof;
 438         struct nfs4_sequence_res        seq_res;
 439 };
 440
 441 /*
 442  * Arguments to the write call.
 443  */
 444 struct nfs_writeargs {
 445         struct nfs_fh *         fh;
 446         struct nfs_open_context *context;
 447         struct nfs_lock_context *lock_context;
 448         __u64                   offset;
 449         __u32                   count;
 450         enum nfs3_stable_how    stable;
 451         unsigned int            pgbase;
 452         struct page **          pages;
 453         const u32 *             bitmask;
 454         struct nfs4_sequence_args       seq_args;
 455 };
 456
 457 struct nfs_writeverf {
 458         enum nfs3_stable_how    committed;
 459         __be32                  verifier[2];
 460 };
 461
 462 struct nfs_writeres {
 463         struct nfs_fattr *      fattr;
 464         struct nfs_writeverf *  verf;
 465         __u32                   count;
 466         const struct nfs_server *server;
 467         struct nfs4_sequence_res        seq_res;
 468 };
 469
 470 /*
 471  * Common arguments to the unlink call
 472  */
 473 struct nfs_removeargs {
 474         const struct nfs_fh     *fh;
 475         struct qstr             name;
 476         const u32 *             bitmask;
 477         struct nfs4_sequence_args       seq_args;
 478 };
 479
 480 struct nfs_removeres {
 481         const struct nfs_server *server;
 482         struct nfs_fattr        *dir_attr;
 483         struct nfs4_change_info cinfo;
 484         struct nfs4_sequence_res        seq_res;
 485 };
 486
 487 /*
 488  * Common arguments to the rename call
 489  */
 490 struct nfs_renameargs {
 491         const struct nfs_fh             *old_dir;
 492         const struct nfs_fh             *new_dir;
 493         const struct qstr               *old_name;
 494         const struct qstr               *new_name;
 495         const u32                       *bitmask;
 496         struct nfs4_sequence_args       seq_args;
 497 };
 498
 499 struct nfs_renameres {
 500         const struct nfs_server         *server;
 501         struct nfs4_change_info         old_cinfo;
 502         struct nfs_fattr                *old_fattr;
 503         struct nfs4_change_info         new_cinfo;
 504         struct nfs_fattr                *new_fattr;
 505         struct nfs4_sequence_res        seq_res;
 506 };
 507
 508 /*
 509  * Argument struct for decode_entry function
 510  */
 511 struct nfs_entry {
 512         __u64                   ino;
 513         __u64                   cookie,
 514                                 prev_cookie;
 515         const char *            name;
 516         unsigned int            len;
 517         int                     eof;
 518         struct nfs_fh *         fh;
 519         struct nfs_fattr *      fattr;
 520         unsigned char           d_type;
 521         struct nfs_server *     server;
 522 };
 523
 524 /*
 525  * The following types are for NFSv2 only.
 526  */
 527 struct nfs_sattrargs {
 528         struct nfs_fh *         fh;
 529         struct iattr *          sattr;
 530 };
 531
 532 struct nfs_diropargs {
 533         struct nfs_fh *         fh;
 534         const char *            name;
 535         unsigned int            len;
 536 };
 537
 538 struct nfs_createargs {
 539         struct nfs_fh *         fh;
 540         const char *            name;
 541         unsigned int            len;
 542         struct iattr *          sattr;
 543 };
 544
 545 struct nfs_setattrargs {
 546         struct nfs_fh *                 fh;
 547         nfs4_stateid                    stateid;
 548         struct iattr *                  iap;
 549         const struct nfs_server *       server; /* Needed for name mapping */
 550         const u32 *                     bitmask;
 551         struct nfs4_sequence_args       seq_args;
 552 };
 553
 554 struct nfs_setaclargs {
 555         struct nfs_fh *                 fh;
 556         size_t                          acl_len;
 557         unsigned int                    acl_pgbase;
 558         struct page **                  acl_pages;
 559         struct nfs4_sequence_args       seq_args;
 560 };
 561
 562 struct nfs_setaclres {
 563         struct nfs4_sequence_res        seq_res;
 564 };
 565
 566 struct nfs_getaclargs {
 567         struct nfs_fh *                 fh;
 568         size_t                          acl_len;
 569         unsigned int                    acl_pgbase;
 570         struct page **                  acl_pages;
 571         struct nfs4_sequence_args       seq_args;
 572 };
 573
 574 struct nfs_getaclres {
 575         size_t                          acl_len;
 576         struct nfs4_sequence_res        seq_res;
 577 };
 578
 579 struct nfs_setattrres {
 580         struct nfs_fattr *              fattr;
 581         const struct nfs_server *       server;
 582         struct nfs4_sequence_res        seq_res;
 583 };
 584
 585 struct nfs_linkargs {
 586         struct nfs_fh *         fromfh;
 587         struct nfs_fh *         tofh;
 588         const char *            toname;
 589         unsigned int            tolen;
 590 };
 591
 592 struct nfs_symlinkargs {
 593         struct nfs_fh *         fromfh;
 594         const char *            fromname;
 595         unsigned int            fromlen;
 596         struct page **          pages;
 597         unsigned int            pathlen;
 598         struct iattr *          sattr;
 599 };
 600
 601 struct nfs_readdirargs {
 602         struct nfs_fh *         fh;
 603         __u32                   cookie;
 604         unsigned int            count;
 605         struct page **          pages;
 606 };
 607
 608 struct nfs3_getaclargs {
 609         struct nfs_fh *         fh;
 610         int                     mask;
 611         struct page **          pages;
 612 };
 613
 614 struct nfs3_setaclargs {
 615         struct inode *          inode;
 616         int                     mask;
 617         struct posix_acl *      acl_access;
 618         struct posix_acl *      acl_default;
 619         size_t                  len;
 620         unsigned int            npages;
 621         struct page **          pages;
 622 };
 623
 624 struct nfs_diropok {
 625         struct nfs_fh *         fh;
 626         struct nfs_fattr *      fattr;
 627 };
 628
 629 struct nfs_readlinkargs {
 630         struct nfs_fh *         fh;
 631         unsigned int            pgbase;
 632         unsigned int            pglen;
 633         struct page **          pages;
 634 };
 635
 636 struct nfs3_sattrargs {
 637         struct nfs_fh *         fh;
 638         struct iattr *          sattr;
 639         unsigned int            guard;
 640         struct timespec         guardtime;
 641 };
 642
 643 struct nfs3_diropargs {
 644         struct nfs_fh *         fh;
 645         const char *            name;
 646         unsigned int            len;
 647 };
 648
 649 struct nfs3_accessargs {
 650         struct nfs_fh *         fh;
 651         __u32                   access;
 652 };
 653
 654 struct nfs3_createargs {
 655         struct nfs_fh *         fh;
 656         const char *            name;
 657         unsigned int            len;
 658         struct iattr *          sattr;
 659         enum nfs3_createmode    createmode;
 660         __be32                  verifier[2];
 661 };
 662
 663 struct nfs3_mkdirargs {
 664         struct nfs_fh *         fh;
 665         const char *            name;
 666         unsigned int            len;
 667         struct iattr *          sattr;
 668 };
 669
 670 struct nfs3_symlinkargs {
 671         struct nfs_fh *         fromfh;
 672         const char *            fromname;
 673         unsigned int            fromlen;
 674         struct page **          pages;
 675         unsigned int            pathlen;
 676         struct iattr *          sattr;
 677 };
 678
 679 struct nfs3_mknodargs {
 680         struct nfs_fh *         fh;
 681         const char *            name;
 682         unsigned int            len;
 683         enum nfs3_ftype         type;
 684         struct iattr *          sattr;
 685         dev_t                   rdev;
 686 };
 687
 688 struct nfs3_linkargs {
 689         struct nfs_fh *         fromfh;
 690         struct nfs_fh *         tofh;
 691         const char *            toname;
 692         unsigned int            tolen;
 693 };
 694
 695 struct nfs3_readdirargs {
 696         struct nfs_fh *         fh;
 697         __u64                   cookie;
 698         __be32                  verf[2];
 699         int                     plus;
 700         unsigned int            count;
 701         struct page **          pages;
 702 };
 703
 704 struct nfs3_diropres {
 705         struct nfs_fattr *      dir_attr;
 706         struct nfs_fh *         fh;
 707         struct nfs_fattr *      fattr;
 708 };
 709
 710 struct nfs3_accessres {
 711         struct nfs_fattr *      fattr;
 712         __u32                   access;
 713 };
 714
 715 struct nfs3_readlinkargs {
 716         struct nfs_fh *         fh;
 717         unsigned int            pgbase;
 718         unsigned int            pglen;
 719         struct page **          pages;
 720 };
 721
 722 struct nfs3_linkres {
 723         struct nfs_fattr *      dir_attr;
 724         struct nfs_fattr *      fattr;
 725 };
 726
 727 struct nfs3_readdirres {
 728         struct nfs_fattr *      dir_attr;
 729         __be32 *                verf;
 730         int                     plus;
 731 };
 732
 733 struct nfs3_getaclres {
 734         struct nfs_fattr *      fattr;
 735         int                     mask;
 736         unsigned int            acl_access_count;
 737         unsigned int            acl_default_count;
 738         struct posix_acl *      acl_access;
 739         struct posix_acl *      acl_default;
 740 };
 741
 742 #ifdef CONFIG_NFS_V4
 743
 744 typedef u64 clientid4;
 745
 746 struct nfs4_accessargs {
 747         const struct nfs_fh *           fh;
 748         const u32 *                     bitmask;
 749         u32                             access;
 750         struct nfs4_sequence_args       seq_args;
 751 };
 752
 753 struct nfs4_accessres {
 754         const struct nfs_server *       server;
 755         struct nfs_fattr *              fattr;
 756         u32                             supported;
 757         u32                             access;
 758         struct nfs4_sequence_res        seq_res;
 759 };
 760
 761 struct nfs4_create_arg {
 762         u32                             ftype;
 763         union {
 764                 struct {
 765                         struct page **  pages;
 766                         unsigned int    len;
 767                 } symlink;   /* NF4LNK */
 768                 struct {
 769                         u32             specdata1;
 770                         u32             specdata2;
 771                 } device;    /* NF4BLK, NF4CHR */
 772         } u;
 773         const struct qstr *             name;
 774         const struct nfs_server *       server;
 775         const struct iattr *            attrs;
 776         const struct nfs_fh *           dir_fh;
 777         const u32 *                     bitmask;
 778         struct nfs4_sequence_args       seq_args;
 779 };
 780
 781 struct nfs4_create_res {
 782         const struct nfs_server *       server;
 783         struct nfs_fh *                 fh;
 784         struct nfs_fattr *              fattr;
 785         struct nfs4_change_info         dir_cinfo;
 786         struct nfs_fattr *              dir_fattr;
 787         struct nfs4_sequence_res        seq_res;
 788 };
 789
 790 struct nfs4_fsinfo_arg {
 791         const struct nfs_fh *           fh;
 792         const u32 *                     bitmask;
 793         struct nfs4_sequence_args       seq_args;
 794 };
 795
 796 struct nfs4_fsinfo_res {
 797         struct nfs_fsinfo              *fsinfo;
 798         struct nfs4_sequence_res        seq_res;
 799 };
 800
 801 struct nfs4_getattr_arg {
 802         const struct nfs_fh *           fh;
 803         const u32 *                     bitmask;
 804         struct nfs4_sequence_args       seq_args;
 805 };
 806
 807 struct nfs4_getattr_res {
 808         const struct nfs_server *       server;
 809         struct nfs_fattr *              fattr;
 810         struct nfs4_sequence_res        seq_res;
 811 };
 812
 813 struct nfs4_link_arg {
 814         const struct nfs_fh *           fh;
 815         const struct nfs_fh *           dir_fh;
 816         const struct qstr *             name;
 817         const u32 *                     bitmask;
 818         struct nfs4_sequence_args       seq_args;
 819 };
 820
 821 struct nfs4_link_res {
 822         const struct nfs_server *       server;
 823         struct nfs_fattr *              fattr;
 824         struct nfs4_change_info         cinfo;
 825         struct nfs_fattr *              dir_attr;
 826         struct nfs4_sequence_res        seq_res;
 827 };
 828
 829
 830 struct nfs4_lookup_arg {
 831         const struct nfs_fh *           dir_fh;
 832         const struct qstr *             name;
 833         const u32 *                     bitmask;
 834         struct nfs4_sequence_args       seq_args;
 835 };
 836
 837 struct nfs4_lookup_res {
 838         const struct nfs_server *       server;
 839         struct nfs_fattr *              fattr;
 840         struct nfs_fh *                 fh;
 841         struct nfs4_sequence_res        seq_res;
 842 };
 843
 844 struct nfs4_lookup_root_arg {
 845         const u32 *                     bitmask;
 846         struct nfs4_sequence_args       seq_args;
 847 };
 848
 849 struct nfs4_pathconf_arg {
 850         const struct nfs_fh *           fh;
 851         const u32 *                     bitmask;
 852         struct nfs4_sequence_args       seq_args;
 853 };
 854
 855 struct nfs4_pathconf_res {
 856         struct nfs_pathconf            *pathconf;
 857         struct nfs4_sequence_res        seq_res;
 858 };
 859
 860 struct nfs4_readdir_arg {
 861         const struct nfs_fh *           fh;
 862         u64                             cookie;
 863         nfs4_verifier                   verifier;
 864         u32                             count;
 865         struct page **                  pages;  /* zero-copy data */
 866         unsigned int                    pgbase; /* zero-copy data */
 867         const u32 *                     bitmask;
 868         int                             plus;
 869         struct nfs4_sequence_args       seq_args;
 870 };
 871
 872 struct nfs4_readdir_res {
 873         nfs4_verifier                   verifier;
 874         unsigned int                    pgbase;
 875         struct nfs4_sequence_res        seq_res;
 876 };
 877
 878 struct nfs4_readlink {
 879         const struct nfs_fh *           fh;
 880         unsigned int                    pgbase;
 881         unsigned int                    pglen;   /* zero-copy data */
 882         struct page **                  pages;   /* zero-copy data */
 883         struct nfs4_sequence_args       seq_args;
 884 };
 885
 886 struct nfs4_readlink_res {
 887         struct nfs4_sequence_res        seq_res;
 888 };
 889
 890 #define NFS4_SETCLIENTID_NAMELEN        (127)
 891 struct nfs4_setclientid {
 892         const nfs4_verifier *           sc_verifier;
 893         unsigned int                    sc_name_len;
 894         char                            sc_name[NFS4_SETCLIENTID_NAMELEN + 1];
 895         u32                             sc_prog;
 896         unsigned int                    sc_netid_len;
 897         char                            sc_netid[RPCBIND_MAXNETIDLEN + 1];
 898         unsigned int                    sc_uaddr_len;
 899         char                            sc_uaddr[RPCBIND_MAXUADDRLEN + 1];
 900         u32                             sc_cb_ident;
 901 };
 902
 903 struct nfs4_setclientid_res {
 904         u64                             clientid;
 905         nfs4_verifier                   confirm;
 906 };
 907
 908 struct nfs4_statfs_arg {
 909         const struct nfs_fh *           fh;
 910         const u32 *                     bitmask;
 911         struct nfs4_sequence_args       seq_args;
 912 };
 913
 914 struct nfs4_statfs_res {
 915         struct nfs_fsstat              *fsstat;
 916         struct nfs4_sequence_res        seq_res;
 917 };
 918
 919 struct nfs4_server_caps_arg {
 920         struct nfs_fh                  *fhandle;
 921         struct nfs4_sequence_args       seq_args;
 922 };
 923
 924 struct nfs4_server_caps_res {
 925         u32                             attr_bitmask[2];
 926         u32                             acl_bitmask;
 927         u32                             has_links;
 928         u32                             has_symlinks;
 929         struct nfs4_sequence_res        seq_res;
 930 };
 931
 932 struct nfs4_string {
 933         unsigned int len;
 934         char *data;
 935 };
 936
 937 #define NFS4_PATHNAME_MAXCOMPONENTS 512
 938 struct nfs4_pathname {
 939         unsigned int ncomponents;
 940         struct nfs4_string components[NFS4_PATHNAME_MAXCOMPONENTS];
 941 };
 942
 943 #define NFS4_FS_LOCATION_MAXSERVERS 10
 944 struct nfs4_fs_location {
 945         unsigned int nservers;
 946         struct nfs4_string servers[NFS4_FS_LOCATION_MAXSERVERS];
 947         struct nfs4_pathname rootpath;
 948 };
 949
 950 #define NFS4_FS_LOCATIONS_MAXENTRIES 10
 951 struct nfs4_fs_locations {
 952         struct nfs_fattr fattr;
 953         const struct nfs_server *server;
 954         struct nfs4_pathname fs_path;
 955         int nlocations;
 956         struct nfs4_fs_location locations[NFS4_FS_LOCATIONS_MAXENTRIES];
 957 };
 958
 959 struct nfs4_fs_locations_arg {
 960         const struct nfs_fh *dir_fh;
 961         const struct qstr *name;
 962         struct page *page;
 963         const u32 *bitmask;
 964         struct nfs4_sequence_args       seq_args;
 965 };
 966
 967 struct nfs4_fs_locations_res {
 968         struct nfs4_fs_locations       *fs_locations;
 969         struct nfs4_sequence_res        seq_res;
 970 };
 971
 972 struct nfs4_secinfo_oid {
 973         unsigned int len;
 974         char data[GSS_OID_MAX_LEN];
 975 };
 976
 977 struct nfs4_secinfo_gss {
 978         struct nfs4_secinfo_oid sec_oid4;
 979         unsigned int qop4;
 980         unsigned int service;
 981 };
 982
 983 struct nfs4_secinfo_flavor {
 984         unsigned int            flavor;
 985         struct nfs4_secinfo_gss gss;
 986 };
 987
 988 struct nfs4_secinfo_flavors {
 989         unsigned int num_flavors;
 990         struct nfs4_secinfo_flavor flavors[0];
 991 };
 992
 993 struct nfs4_secinfo_arg {
 994         const struct nfs_fh             *dir_fh;
 995         const struct qstr               *name;
 996         struct nfs4_sequence_args       seq_args;
 997 };
 998
 999 struct nfs4_secinfo_res {
1000         struct nfs4_secinfo_flavors     *flavors;
1001         struct nfs4_sequence_res        seq_res;
1002 };
1003
1004 #endif /* CONFIG_NFS_V4 */
1005
1006 struct nfstime4 {
1007         u64     seconds;
1008         u32     nseconds;
1009 };
1010
1011 #ifdef CONFIG_NFS_V4_1
1012 struct nfs_impl_id4 {
1013         u32             domain_len;
1014         char            *domain;
1015         u32             name_len;
1016         char            *name;
1017         struct nfstime4 date;
1018 };
1019
1020 #define NFS4_EXCHANGE_ID_LEN    (48)
1021 struct nfs41_exchange_id_args {
1022         struct nfs_client               *client;
1023         nfs4_verifier                   *verifier;
1024         unsigned int                    id_len;
1025         char                            id[NFS4_EXCHANGE_ID_LEN];
1026         u32                             flags;
1027 };
1028
1029 struct server_owner {
1030         uint64_t                        minor_id;
1031         uint32_t                        major_id_sz;
1032         char                            major_id[NFS4_OPAQUE_LIMIT];
1033 };
1034
1035 struct server_scope {
1036         uint32_t                        server_scope_sz;
1037         char                            server_scope[NFS4_OPAQUE_LIMIT];
1038 };
1039
1040 struct nfs41_exchange_id_res {
1041         struct nfs_client               *client;
1042         u32                             flags;
1043 };
1044
1045 struct nfs41_create_session_args {
1046         struct nfs_client              *client;
1047         uint32_t                        flags;
1048         uint32_t                        cb_program;
1049         struct nfs4_channel_attrs       fc_attrs;       /* Fore Channel */
1050         struct nfs4_channel_attrs       bc_attrs;       /* Back Channel */
1051 };
1052
1053 struct nfs41_create_session_res {
1054         struct nfs_client              *client;
1055 };
1056
1057 struct nfs41_reclaim_complete_args {
1058         /* In the future extend to include curr_fh for use with migration */
1059         unsigned char                   one_fs:1;
1060         struct nfs4_sequence_args       seq_args;
1061 };
1062
1063 struct nfs41_reclaim_complete_res {
1064         struct nfs4_sequence_res        seq_res;
1065 };
1066 #endif /* CONFIG_NFS_V4_1 */
1067
1068 struct nfs_page;
1069
1070 #define NFS_PAGEVEC_SIZE        (8U)
1071
1072 struct nfs_read_data {
1073         int                     flags;
1074         struct rpc_task         task;
1075         struct inode            *inode;
1076         struct rpc_cred         *cred;
1077         struct nfs_fattr        fattr;  /* fattr storage */
1078         struct list_head        pages;  /* Coalesced read requests */
1079         struct nfs_page         *req;   /* multi ops per nfs_page */
1080         struct page             **pagevec;
1081         unsigned int            npages; /* Max length of pagevec */
1082         struct nfs_readargs args;
1083         struct nfs_readres  res;
1084         unsigned long           timestamp;      /* For lease renewal */
1085         struct pnfs_layout_segment *lseg;
1086         struct nfs_client       *ds_clp;        /* pNFS data server */
1087         const struct rpc_call_ops *mds_ops;
1088         int (*read_done_cb) (struct rpc_task *task, struct nfs_read_data *data);
1089         __u64                   mds_offset;
1090         struct page             *page_array[NFS_PAGEVEC_SIZE];
1091 };
1092
1093 struct nfs_write_data {
1094         int                     flags;
1095         struct rpc_task         task;
1096         struct inode            *inode;
1097         struct rpc_cred         *cred;
1098         struct nfs_fattr        fattr;
1099         struct nfs_writeverf    verf;
1100         struct list_head        pages;          /* Coalesced requests we wish to flush */
1101         struct nfs_page         *req;           /* multi ops per nfs_page */
1102         struct page             **pagevec;
1103         unsigned int            npages;         /* Max length of pagevec */
1104         struct nfs_writeargs    args;           /* argument struct */
1105         struct nfs_writeres     res;            /* result struct */
1106         struct pnfs_layout_segment *lseg;
1107         struct nfs_client       *ds_clp;        /* pNFS data server */
1108         int                     ds_commit_index;
1109         const struct rpc_call_ops *mds_ops;
1110         int (*write_done_cb) (struct rpc_task *task, struct nfs_write_data *data);
1111 #ifdef CONFIG_NFS_V4
1112         unsigned long           timestamp;      /* For lease renewal */
1113 #endif
1114         __u64                   mds_offset;     /* Filelayout dense stripe */
1115         struct page             *page_array[NFS_PAGEVEC_SIZE];
1116 };
1117
1118 struct nfs_access_entry;
1119 struct nfs_client;
1120 struct rpc_timeout;
1121
1122 /*
1123  * RPC procedure vector for NFSv2/NFSv3 demuxing
1124  */
1125 struct nfs_rpc_ops {
1126         u32     version;                /* Protocol version */
1127         const struct dentry_operations *dentry_ops;
1128         const struct inode_operations *dir_inode_ops;
1129         const struct inode_operations *file_inode_ops;
1130
1131         int     (*getroot) (struct nfs_server *, struct nfs_fh *,
1132                             struct nfs_fsinfo *);
1133         int     (*lookupfh)(struct nfs_server *, struct nfs_fh *,
1134                             struct qstr *, struct nfs_fh *,
1135                             struct nfs_fattr *);
1136         int     (*getattr) (struct nfs_server *, struct nfs_fh *,
1137                             struct nfs_fattr *);
1138         int     (*setattr) (struct dentry *, struct nfs_fattr *,
1139                             struct iattr *);
1140         int     (*lookup)  (struct rpc_clnt *clnt, struct inode *, struct qstr *,
1141                             struct nfs_fh *, struct nfs_fattr *);
1142         int     (*access)  (struct inode *, struct nfs_access_entry *);
1143         int     (*readlink)(struct inode *, struct page *, unsigned int,
1144                             unsigned int);
1145         int     (*create)  (struct inode *, struct dentry *,
1146                             struct iattr *, int, struct nfs_open_context *);
1147         int     (*remove)  (struct inode *, struct qstr *);
1148         void    (*unlink_setup)  (struct rpc_message *, struct inode *dir);
1149         int     (*unlink_done) (struct rpc_task *, struct inode *);
1150         int     (*rename)  (struct inode *, struct qstr *,
1151                             struct inode *, struct qstr *);
1152         void    (*rename_setup)  (struct rpc_message *msg, struct inode *dir);
1153         int     (*rename_done) (struct rpc_task *task, struct inode *old_dir, struct inode *new_dir);
1154         int     (*link)    (struct inode *, struct inode *, struct qstr *);
1155         int     (*symlink) (struct inode *, struct dentry *, struct page *,
1156                             unsigned int, struct iattr *);
1157         int     (*mkdir)   (struct inode *, struct dentry *, struct iattr *);
1158         int     (*rmdir)   (struct inode *, struct qstr *);
1159         int     (*readdir) (struct dentry *, struct rpc_cred *,
1160                             u64, struct page **, unsigned int, int);
1161         int     (*mknod)   (struct inode *, struct dentry *, struct iattr *,
1162                             dev_t);
1163         int     (*statfs)  (struct nfs_server *, struct nfs_fh *,
1164                             struct nfs_fsstat *);
1165         int     (*fsinfo)  (struct nfs_server *, struct nfs_fh *,
1166                             struct nfs_fsinfo *);
1167         int     (*pathconf) (struct nfs_server *, struct nfs_fh *,
1168                              struct nfs_pathconf *);
1169         int     (*set_capabilities)(struct nfs_server *, struct nfs_fh *);
1170         int     (*decode_dirent)(struct xdr_stream *, struct nfs_entry *, int);
1171         void    (*read_setup)   (struct nfs_read_data *, struct rpc_message *);
1172         int     (*read_done)  (struct rpc_task *, struct nfs_read_data *);
1173         void    (*write_setup)  (struct nfs_write_data *, struct rpc_message *);
1174         int     (*write_done)  (struct rpc_task *, struct nfs_write_data *);
1175         void    (*commit_setup) (struct nfs_write_data *, struct rpc_message *);
1176         int     (*commit_done) (struct rpc_task *, struct nfs_write_data *);
1177         int     (*lock)(struct file *, int, struct file_lock *);
1178         int     (*lock_check_bounds)(const struct file_lock *);
1179         void    (*clear_acl_cache)(struct inode *);
1180         void    (*close_context)(struct nfs_open_context *ctx, int);
1181         struct inode * (*open_context) (struct inode *dir,
1182                                 struct nfs_open_context *ctx,
1183                                 int open_flags,
1184                                 struct iattr *iattr);
1185         int     (*init_client) (struct nfs_client *, const struct rpc_timeout *,
1186                                 const char *, rpc_authflavor_t, int);
1187         int     (*secinfo)(struct inode *, const struct qstr *, struct nfs4_secinfo_flavors *);
1188 };
1189
1190 /*
1191  *      NFS_CALL(getattr, inode, (fattr));
1192  * into
1193  *      NFS_PROTO(inode)->getattr(fattr);
1194  */
1195 #define NFS_CALL(op, inode, args)       NFS_PROTO(inode)->op args
1196
1197 /*
1198  * Function vectors etc. for the NFS client
1199  */
1200 extern const struct nfs_rpc_ops nfs_v2_clientops;
1201 extern const struct nfs_rpc_ops nfs_v3_clientops;
1202 extern const struct nfs_rpc_ops nfs_v4_clientops;
1203 extern struct rpc_version       nfs_version2;
1204 extern struct rpc_version       nfs_version3;
1205 extern struct rpc_version       nfs_version4;
1206
1207 extern struct rpc_version       nfsacl_version3;
1208 extern struct rpc_program       nfsacl_program;
1209
1210 #endif