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 };
 237
 238 struct nfs4_getdeviceinfo_args {
 239         struct pnfs_device *pdev;
 240         struct nfs4_sequence_args seq_args;
 241 };
 242
 243 struct nfs4_getdeviceinfo_res {
 244         struct pnfs_device *pdev;
 245         struct nfs4_sequence_res seq_res;
 246 };
 247
 248 struct nfs4_layoutcommit_args {
 249         nfs4_stateid stateid;
 250         __u64 lastbytewritten;
 251         struct inode *inode;
 252         const u32 *bitmask;
 253         struct nfs4_sequence_args seq_args;
 254 };
 255
 256 struct nfs4_layoutcommit_res {
 257         struct nfs_fattr *fattr;
 258         const struct nfs_server *server;
 259         struct nfs4_sequence_res seq_res;
 260 };
 261
 262 struct nfs4_layoutcommit_data {
 263         struct rpc_task task;
 264         struct nfs_fattr fattr;
 265         struct pnfs_layout_segment *lseg;
 266         struct rpc_cred *cred;
 267         struct nfs4_layoutcommit_args args;
 268         struct nfs4_layoutcommit_res res;
 269 };
 270
 271 /*
 272  * Arguments to the open call.
 273  */
 274 struct nfs_openargs {
 275         const struct nfs_fh *   fh;
 276         struct nfs_seqid *      seqid;
 277         int                     open_flags;
 278         fmode_t                 fmode;
 279         __u64                   clientid;
 280         __u64                   id;
 281         union {
 282                 struct {
 283                         struct iattr *  attrs;    /* UNCHECKED, GUARDED */
 284                         nfs4_verifier   verifier; /* EXCLUSIVE */
 285                 };
 286                 nfs4_stateid    delegation;             /* CLAIM_DELEGATE_CUR */
 287                 fmode_t         delegation_type;        /* CLAIM_PREVIOUS */
 288         } u;
 289         const struct qstr *     name;
 290         const struct nfs_server *server;         /* Needed for ID mapping */
 291         const u32 *             bitmask;
 292         __u32                   claim;
 293         struct nfs4_sequence_args       seq_args;
 294 };
 295
 296 struct nfs_openres {
 297         nfs4_stateid            stateid;
 298         struct nfs_fh           fh;
 299         struct nfs4_change_info cinfo;
 300         __u32                   rflags;
 301         struct nfs_fattr *      f_attr;
 302         struct nfs_fattr *      dir_attr;
 303         struct nfs_seqid *      seqid;
 304         const struct nfs_server *server;
 305         fmode_t                 delegation_type;
 306         nfs4_stateid            delegation;
 307         __u32                   do_recall;
 308         __u64                   maxsize;
 309         __u32                   attrset[NFS4_BITMAP_SIZE];
 310         struct nfs4_sequence_res        seq_res;
 311 };
 312
 313 /*
 314  * Arguments to the open_confirm call.
 315  */
 316 struct nfs_open_confirmargs {
 317         const struct nfs_fh *   fh;
 318         nfs4_stateid *          stateid;
 319         struct nfs_seqid *      seqid;
 320 };
 321
 322 struct nfs_open_confirmres {
 323         nfs4_stateid            stateid;
 324         struct nfs_seqid *      seqid;
 325 };
 326
 327 /*
 328  * Arguments to the close call.
 329  */
 330 struct nfs_closeargs {
 331         struct nfs_fh *         fh;
 332         nfs4_stateid *          stateid;
 333         struct nfs_seqid *      seqid;
 334         fmode_t                 fmode;
 335         const u32 *             bitmask;
 336         struct nfs4_sequence_args       seq_args;
 337 };
 338
 339 struct nfs_closeres {
 340         nfs4_stateid            stateid;
 341         struct nfs_fattr *      fattr;
 342         struct nfs_seqid *      seqid;
 343         const struct nfs_server *server;
 344         struct nfs4_sequence_res        seq_res;
 345 };
 346 /*
 347  *  * Arguments to the lock,lockt, and locku call.
 348  *   */
 349 struct nfs_lowner {
 350         __u64                   clientid;
 351         __u64                   id;
 352         dev_t                   s_dev;
 353 };
 354
 355 struct nfs_lock_args {
 356         struct nfs_fh *         fh;
 357         struct file_lock *      fl;
 358         struct nfs_seqid *      lock_seqid;
 359         nfs4_stateid *          lock_stateid;
 360         struct nfs_seqid *      open_seqid;
 361         nfs4_stateid *          open_stateid;
 362         struct nfs_lowner       lock_owner;
 363         unsigned char           block : 1;
 364         unsigned char           reclaim : 1;
 365         unsigned char           new_lock_owner : 1;
 366         struct nfs4_sequence_args       seq_args;
 367 };
 368
 369 struct nfs_lock_res {
 370         nfs4_stateid            stateid;
 371         struct nfs_seqid *      lock_seqid;
 372         struct nfs_seqid *      open_seqid;
 373         struct nfs4_sequence_res        seq_res;
 374 };
 375
 376 struct nfs_locku_args {
 377         struct nfs_fh *         fh;
 378         struct file_lock *      fl;
 379         struct nfs_seqid *      seqid;
 380         nfs4_stateid *          stateid;
 381         struct nfs4_sequence_args       seq_args;
 382 };
 383
 384 struct nfs_locku_res {
 385         nfs4_stateid            stateid;
 386         struct nfs_seqid *      seqid;
 387         struct nfs4_sequence_res        seq_res;
 388 };
 389
 390 struct nfs_lockt_args {
 391         struct nfs_fh *         fh;
 392         struct file_lock *      fl;
 393         struct nfs_lowner       lock_owner;
 394         struct nfs4_sequence_args       seq_args;
 395 };
 396
 397 struct nfs_lockt_res {
 398         struct file_lock *      denied; /* LOCK, LOCKT failed */
 399         struct nfs4_sequence_res        seq_res;
 400 };
 401
 402 struct nfs_release_lockowner_args {
 403         struct nfs_lowner       lock_owner;
 404 };
 405
 406 struct nfs4_delegreturnargs {
 407         const struct nfs_fh *fhandle;
 408         const nfs4_stateid *stateid;
 409         const u32 * bitmask;
 410         struct nfs4_sequence_args       seq_args;
 411 };
 412
 413 struct nfs4_delegreturnres {
 414         struct nfs_fattr * fattr;
 415         const struct nfs_server *server;
 416         struct nfs4_sequence_res        seq_res;
 417 };
 418
 419 /*
 420  * Arguments to the read call.
 421  */
 422 struct nfs_readargs {
 423         struct nfs_fh *         fh;
 424         struct nfs_open_context *context;
 425         struct nfs_lock_context *lock_context;
 426         __u64                   offset;
 427         __u32                   count;
 428         unsigned int            pgbase;
 429         struct page **          pages;
 430         struct nfs4_sequence_args       seq_args;
 431 };
 432
 433 struct nfs_readres {
 434         struct nfs_fattr *      fattr;
 435         __u32                   count;
 436         int                     eof;
 437         struct nfs4_sequence_res        seq_res;
 438 };
 439
 440 /*
 441  * Arguments to the write call.
 442  */
 443 struct nfs_writeargs {
 444         struct nfs_fh *         fh;
 445         struct nfs_open_context *context;
 446         struct nfs_lock_context *lock_context;
 447         __u64                   offset;
 448         __u32                   count;
 449         enum nfs3_stable_how    stable;
 450         unsigned int            pgbase;
 451         struct page **          pages;
 452         const u32 *             bitmask;
 453         struct nfs4_sequence_args       seq_args;
 454 };
 455
 456 struct nfs_writeverf {
 457         enum nfs3_stable_how    committed;
 458         __be32                  verifier[2];
 459 };
 460
 461 struct nfs_writeres {
 462         struct nfs_fattr *      fattr;
 463         struct nfs_writeverf *  verf;
 464         __u32                   count;
 465         const struct nfs_server *server;
 466         struct nfs4_sequence_res        seq_res;
 467 };
 468
 469 /*
 470  * Common arguments to the unlink call
 471  */
 472 struct nfs_removeargs {
 473         const struct nfs_fh     *fh;
 474         struct qstr             name;
 475         const u32 *             bitmask;
 476         struct nfs4_sequence_args       seq_args;
 477 };
 478
 479 struct nfs_removeres {
 480         const struct nfs_server *server;
 481         struct nfs_fattr        *dir_attr;
 482         struct nfs4_change_info cinfo;
 483         struct nfs4_sequence_res        seq_res;
 484 };
 485
 486 /*
 487  * Common arguments to the rename call
 488  */
 489 struct nfs_renameargs {
 490         const struct nfs_fh             *old_dir;
 491         const struct nfs_fh             *new_dir;
 492         const struct qstr               *old_name;
 493         const struct qstr               *new_name;
 494         const u32                       *bitmask;
 495         struct nfs4_sequence_args       seq_args;
 496 };
 497
 498 struct nfs_renameres {
 499         const struct nfs_server         *server;
 500         struct nfs4_change_info         old_cinfo;
 501         struct nfs_fattr                *old_fattr;
 502         struct nfs4_change_info         new_cinfo;
 503         struct nfs_fattr                *new_fattr;
 504         struct nfs4_sequence_res        seq_res;
 505 };
 506
 507 /*
 508  * Argument struct for decode_entry function
 509  */
 510 struct nfs_entry {
 511         __u64                   ino;
 512         __u64                   cookie,
 513                                 prev_cookie;
 514         const char *            name;
 515         unsigned int            len;
 516         int                     eof;
 517         struct nfs_fh *         fh;
 518         struct nfs_fattr *      fattr;
 519         unsigned char           d_type;
 520         struct nfs_server *     server;
 521 };
 522
 523 /*
 524  * The following types are for NFSv2 only.
 525  */
 526 struct nfs_sattrargs {
 527         struct nfs_fh *         fh;
 528         struct iattr *          sattr;
 529 };
 530
 531 struct nfs_diropargs {
 532         struct nfs_fh *         fh;
 533         const char *            name;
 534         unsigned int            len;
 535 };
 536
 537 struct nfs_createargs {
 538         struct nfs_fh *         fh;
 539         const char *            name;
 540         unsigned int            len;
 541         struct iattr *          sattr;
 542 };
 543
 544 struct nfs_setattrargs {
 545         struct nfs_fh *                 fh;
 546         nfs4_stateid                    stateid;
 547         struct iattr *                  iap;
 548         const struct nfs_server *       server; /* Needed for name mapping */
 549         const u32 *                     bitmask;
 550         struct nfs4_sequence_args       seq_args;
 551 };
 552
 553 struct nfs_setaclargs {
 554         struct nfs_fh *                 fh;
 555         size_t                          acl_len;
 556         unsigned int                    acl_pgbase;
 557         struct page **                  acl_pages;
 558         struct nfs4_sequence_args       seq_args;
 559 };
 560
 561 struct nfs_setaclres {
 562         struct nfs4_sequence_res        seq_res;
 563 };
 564
 565 struct nfs_getaclargs {
 566         struct nfs_fh *                 fh;
 567         size_t                          acl_len;
 568         unsigned int                    acl_pgbase;
 569         struct page **                  acl_pages;
 570         struct nfs4_sequence_args       seq_args;
 571 };
 572
 573 struct nfs_getaclres {
 574         size_t                          acl_len;
 575         struct nfs4_sequence_res        seq_res;
 576 };
 577
 578 struct nfs_setattrres {
 579         struct nfs_fattr *              fattr;
 580         const struct nfs_server *       server;
 581         struct nfs4_sequence_res        seq_res;
 582 };
 583
 584 struct nfs_linkargs {
 585         struct nfs_fh *         fromfh;
 586         struct nfs_fh *         tofh;
 587         const char *            toname;
 588         unsigned int            tolen;
 589 };
 590
 591 struct nfs_symlinkargs {
 592         struct nfs_fh *         fromfh;
 593         const char *            fromname;
 594         unsigned int            fromlen;
 595         struct page **          pages;
 596         unsigned int            pathlen;
 597         struct iattr *          sattr;
 598 };
 599
 600 struct nfs_readdirargs {
 601         struct nfs_fh *         fh;
 602         __u32                   cookie;
 603         unsigned int            count;
 604         struct page **          pages;
 605 };
 606
 607 struct nfs3_getaclargs {
 608         struct nfs_fh *         fh;
 609         int                     mask;
 610         struct page **          pages;
 611 };
 612
 613 struct nfs3_setaclargs {
 614         struct inode *          inode;
 615         int                     mask;
 616         struct posix_acl *      acl_access;
 617         struct posix_acl *      acl_default;
 618         size_t                  len;
 619         unsigned int            npages;
 620         struct page **          pages;
 621 };
 622
 623 struct nfs_diropok {
 624         struct nfs_fh *         fh;
 625         struct nfs_fattr *      fattr;
 626 };
 627
 628 struct nfs_readlinkargs {
 629         struct nfs_fh *         fh;
 630         unsigned int            pgbase;
 631         unsigned int            pglen;
 632         struct page **          pages;
 633 };
 634
 635 struct nfs3_sattrargs {
 636         struct nfs_fh *         fh;
 637         struct iattr *          sattr;
 638         unsigned int            guard;
 639         struct timespec         guardtime;
 640 };
 641
 642 struct nfs3_diropargs {
 643         struct nfs_fh *         fh;
 644         const char *            name;
 645         unsigned int            len;
 646 };
 647
 648 struct nfs3_accessargs {
 649         struct nfs_fh *         fh;
 650         __u32                   access;
 651 };
 652
 653 struct nfs3_createargs {
 654         struct nfs_fh *         fh;
 655         const char *            name;
 656         unsigned int            len;
 657         struct iattr *          sattr;
 658         enum nfs3_createmode    createmode;
 659         __be32                  verifier[2];
 660 };
 661
 662 struct nfs3_mkdirargs {
 663         struct nfs_fh *         fh;
 664         const char *            name;
 665         unsigned int            len;
 666         struct iattr *          sattr;
 667 };
 668
 669 struct nfs3_symlinkargs {
 670         struct nfs_fh *         fromfh;
 671         const char *            fromname;
 672         unsigned int            fromlen;
 673         struct page **          pages;
 674         unsigned int            pathlen;
 675         struct iattr *          sattr;
 676 };
 677
 678 struct nfs3_mknodargs {
 679         struct nfs_fh *         fh;
 680         const char *            name;
 681         unsigned int            len;
 682         enum nfs3_ftype         type;
 683         struct iattr *          sattr;
 684         dev_t                   rdev;
 685 };
 686
 687 struct nfs3_linkargs {
 688         struct nfs_fh *         fromfh;
 689         struct nfs_fh *         tofh;
 690         const char *            toname;
 691         unsigned int            tolen;
 692 };
 693
 694 struct nfs3_readdirargs {
 695         struct nfs_fh *         fh;
 696         __u64                   cookie;
 697         __be32                  verf[2];
 698         int                     plus;
 699         unsigned int            count;
 700         struct page **          pages;
 701 };
 702
 703 struct nfs3_diropres {
 704         struct nfs_fattr *      dir_attr;
 705         struct nfs_fh *         fh;
 706         struct nfs_fattr *      fattr;
 707 };
 708
 709 struct nfs3_accessres {
 710         struct nfs_fattr *      fattr;
 711         __u32                   access;
 712 };
 713
 714 struct nfs3_readlinkargs {
 715         struct nfs_fh *         fh;
 716         unsigned int            pgbase;
 717         unsigned int            pglen;
 718         struct page **          pages;
 719 };
 720
 721 struct nfs3_linkres {
 722         struct nfs_fattr *      dir_attr;
 723         struct nfs_fattr *      fattr;
 724 };
 725
 726 struct nfs3_readdirres {
 727         struct nfs_fattr *      dir_attr;
 728         __be32 *                verf;
 729         int                     plus;
 730 };
 731
 732 struct nfs3_getaclres {
 733         struct nfs_fattr *      fattr;
 734         int                     mask;
 735         unsigned int            acl_access_count;
 736         unsigned int            acl_default_count;
 737         struct posix_acl *      acl_access;
 738         struct posix_acl *      acl_default;
 739 };
 740
 741 #ifdef CONFIG_NFS_V4
 742
 743 typedef u64 clientid4;
 744
 745 struct nfs4_accessargs {
 746         const struct nfs_fh *           fh;
 747         const u32 *                     bitmask;
 748         u32                             access;
 749         struct nfs4_sequence_args       seq_args;
 750 };
 751
 752 struct nfs4_accessres {
 753         const struct nfs_server *       server;
 754         struct nfs_fattr *              fattr;
 755         u32                             supported;
 756         u32                             access;
 757         struct nfs4_sequence_res        seq_res;
 758 };
 759
 760 struct nfs4_create_arg {
 761         u32                             ftype;
 762         union {
 763                 struct {
 764                         struct page **  pages;
 765                         unsigned int    len;
 766                 } symlink;   /* NF4LNK */
 767                 struct {
 768                         u32             specdata1;
 769                         u32             specdata2;
 770                 } device;    /* NF4BLK, NF4CHR */
 771         } u;
 772         const struct qstr *             name;
 773         const struct nfs_server *       server;
 774         const struct iattr *            attrs;
 775         const struct nfs_fh *           dir_fh;
 776         const u32 *                     bitmask;
 777         struct nfs4_sequence_args       seq_args;
 778 };
 779
 780 struct nfs4_create_res {
 781         const struct nfs_server *       server;
 782         struct nfs_fh *                 fh;
 783         struct nfs_fattr *              fattr;
 784         struct nfs4_change_info         dir_cinfo;
 785         struct nfs_fattr *              dir_fattr;
 786         struct nfs4_sequence_res        seq_res;
 787 };
 788
 789 struct nfs4_fsinfo_arg {
 790         const struct nfs_fh *           fh;
 791         const u32 *                     bitmask;
 792         struct nfs4_sequence_args       seq_args;
 793 };
 794
 795 struct nfs4_fsinfo_res {
 796         struct nfs_fsinfo              *fsinfo;
 797         struct nfs4_sequence_res        seq_res;
 798 };
 799
 800 struct nfs4_getattr_arg {
 801         const struct nfs_fh *           fh;
 802         const u32 *                     bitmask;
 803         struct nfs4_sequence_args       seq_args;
 804 };
 805
 806 struct nfs4_getattr_res {
 807         const struct nfs_server *       server;
 808         struct nfs_fattr *              fattr;
 809         struct nfs4_sequence_res        seq_res;
 810 };
 811
 812 struct nfs4_link_arg {
 813         const struct nfs_fh *           fh;
 814         const struct nfs_fh *           dir_fh;
 815         const struct qstr *             name;
 816         const u32 *                     bitmask;
 817         struct nfs4_sequence_args       seq_args;
 818 };
 819
 820 struct nfs4_link_res {
 821         const struct nfs_server *       server;
 822         struct nfs_fattr *              fattr;
 823         struct nfs4_change_info         cinfo;
 824         struct nfs_fattr *              dir_attr;
 825         struct nfs4_sequence_res        seq_res;
 826 };
 827
 828
 829 struct nfs4_lookup_arg {
 830         const struct nfs_fh *           dir_fh;
 831         const struct qstr *             name;
 832         const u32 *                     bitmask;
 833         struct nfs4_sequence_args       seq_args;
 834 };
 835
 836 struct nfs4_lookup_res {
 837         const struct nfs_server *       server;
 838         struct nfs_fattr *              fattr;
 839         struct nfs_fh *                 fh;
 840         struct nfs4_sequence_res        seq_res;
 841 };
 842
 843 struct nfs4_lookup_root_arg {
 844         const u32 *                     bitmask;
 845         struct nfs4_sequence_args       seq_args;
 846 };
 847
 848 struct nfs4_pathconf_arg {
 849         const struct nfs_fh *           fh;
 850         const u32 *                     bitmask;
 851         struct nfs4_sequence_args       seq_args;
 852 };
 853
 854 struct nfs4_pathconf_res {
 855         struct nfs_pathconf            *pathconf;
 856         struct nfs4_sequence_res        seq_res;
 857 };
 858
 859 struct nfs4_readdir_arg {
 860         const struct nfs_fh *           fh;
 861         u64                             cookie;
 862         nfs4_verifier                   verifier;
 863         u32                             count;
 864         struct page **                  pages;  /* zero-copy data */
 865         unsigned int                    pgbase; /* zero-copy data */
 866         const u32 *                     bitmask;
 867         int                             plus;
 868         struct nfs4_sequence_args       seq_args;
 869 };
 870
 871 struct nfs4_readdir_res {
 872         nfs4_verifier                   verifier;
 873         unsigned int                    pgbase;
 874         struct nfs4_sequence_res        seq_res;
 875 };
 876
 877 struct nfs4_readlink {
 878         const struct nfs_fh *           fh;
 879         unsigned int                    pgbase;
 880         unsigned int                    pglen;   /* zero-copy data */
 881         struct page **                  pages;   /* zero-copy data */
 882         struct nfs4_sequence_args       seq_args;
 883 };
 884
 885 struct nfs4_readlink_res {
 886         struct nfs4_sequence_res        seq_res;
 887 };
 888
 889 #define NFS4_SETCLIENTID_NAMELEN        (127)
 890 struct nfs4_setclientid {
 891         const nfs4_verifier *           sc_verifier;
 892         unsigned int                    sc_name_len;
 893         char                            sc_name[NFS4_SETCLIENTID_NAMELEN + 1];
 894         u32                             sc_prog;
 895         unsigned int                    sc_netid_len;
 896         char                            sc_netid[RPCBIND_MAXNETIDLEN + 1];
 897         unsigned int                    sc_uaddr_len;
 898         char                            sc_uaddr[RPCBIND_MAXUADDRLEN + 1];
 899         u32                             sc_cb_ident;
 900 };
 901
 902 struct nfs4_setclientid_res {
 903         u64                             clientid;
 904         nfs4_verifier                   confirm;
 905 };
 906
 907 struct nfs4_statfs_arg {
 908         const struct nfs_fh *           fh;
 909         const u32 *                     bitmask;
 910         struct nfs4_sequence_args       seq_args;
 911 };
 912
 913 struct nfs4_statfs_res {
 914         struct nfs_fsstat              *fsstat;
 915         struct nfs4_sequence_res        seq_res;
 916 };
 917
 918 struct nfs4_server_caps_arg {
 919         struct nfs_fh                  *fhandle;
 920         struct nfs4_sequence_args       seq_args;
 921 };
 922
 923 struct nfs4_server_caps_res {
 924         u32                             attr_bitmask[2];
 925         u32                             acl_bitmask;
 926         u32                             has_links;
 927         u32                             has_symlinks;
 928         struct nfs4_sequence_res        seq_res;
 929 };
 930
 931 struct nfs4_string {
 932         unsigned int len;
 933         char *data;
 934 };
 935
 936 #define NFS4_PATHNAME_MAXCOMPONENTS 512
 937 struct nfs4_pathname {
 938         unsigned int ncomponents;
 939         struct nfs4_string components[NFS4_PATHNAME_MAXCOMPONENTS];
 940 };
 941
 942 #define NFS4_FS_LOCATION_MAXSERVERS 10
 943 struct nfs4_fs_location {
 944         unsigned int nservers;
 945         struct nfs4_string servers[NFS4_FS_LOCATION_MAXSERVERS];
 946         struct nfs4_pathname rootpath;
 947 };
 948
 949 #define NFS4_FS_LOCATIONS_MAXENTRIES 10
 950 struct nfs4_fs_locations {
 951         struct nfs_fattr fattr;
 952         const struct nfs_server *server;
 953         struct nfs4_pathname fs_path;
 954         int nlocations;
 955         struct nfs4_fs_location locations[NFS4_FS_LOCATIONS_MAXENTRIES];
 956 };
 957
 958 struct nfs4_fs_locations_arg {
 959         const struct nfs_fh *dir_fh;
 960         const struct qstr *name;
 961         struct page *page;
 962         const u32 *bitmask;
 963         struct nfs4_sequence_args       seq_args;
 964 };
 965
 966 struct nfs4_fs_locations_res {
 967         struct nfs4_fs_locations       *fs_locations;
 968         struct nfs4_sequence_res        seq_res;
 969 };
 970
 971 struct nfs4_secinfo_oid {
 972         unsigned int len;
 973         char data[GSS_OID_MAX_LEN];
 974 };
 975
 976 struct nfs4_secinfo_gss {
 977         struct nfs4_secinfo_oid sec_oid4;
 978         unsigned int qop4;
 979         unsigned int service;
 980 };
 981
 982 struct nfs4_secinfo_flavor {
 983         unsigned int            flavor;
 984         struct nfs4_secinfo_gss gss;
 985 };
 986
 987 struct nfs4_secinfo_flavors {
 988         unsigned int num_flavors;
 989         struct nfs4_secinfo_flavor flavors[0];
 990 };
 991
 992 struct nfs4_secinfo_arg {
 993         const struct nfs_fh             *dir_fh;
 994         const struct qstr               *name;
 995         struct nfs4_sequence_args       seq_args;
 996 };
 997
 998 struct nfs4_secinfo_res {
 999         struct nfs4_secinfo_flavors     *flavors;
1000         struct nfs4_sequence_res        seq_res;
1001 };
1002
1003 #endif /* CONFIG_NFS_V4 */
1004
1005 struct nfstime4 {
1006         u64     seconds;
1007         u32     nseconds;
1008 };
1009
1010 #ifdef CONFIG_NFS_V4_1
1011 struct nfs_impl_id4 {
1012         u32             domain_len;
1013         char            *domain;
1014         u32             name_len;
1015         char            *name;
1016         struct nfstime4 date;
1017 };
1018
1019 #define NFS4_EXCHANGE_ID_LEN    (48)
1020 struct nfs41_exchange_id_args {
1021         struct nfs_client               *client;
1022         nfs4_verifier                   *verifier;
1023         unsigned int                    id_len;
1024         char                            id[NFS4_EXCHANGE_ID_LEN];
1025         u32                             flags;
1026 };
1027
1028 struct server_owner {
1029         uint64_t                        minor_id;
1030         uint32_t                        major_id_sz;
1031         char                            major_id[NFS4_OPAQUE_LIMIT];
1032 };
1033
1034 struct server_scope {
1035         uint32_t                        server_scope_sz;
1036         char                            server_scope[NFS4_OPAQUE_LIMIT];
1037 };
1038
1039 struct nfs41_exchange_id_res {
1040         struct nfs_client               *client;
1041         u32                             flags;
1042 };
1043
1044 struct nfs41_create_session_args {
1045         struct nfs_client              *client;
1046         uint32_t                        flags;
1047         uint32_t                        cb_program;
1048         struct nfs4_channel_attrs       fc_attrs;       /* Fore Channel */
1049         struct nfs4_channel_attrs       bc_attrs;       /* Back Channel */
1050 };
1051
1052 struct nfs41_create_session_res {
1053         struct nfs_client              *client;
1054 };
1055
1056 struct nfs41_reclaim_complete_args {
1057         /* In the future extend to include curr_fh for use with migration */
1058         unsigned char                   one_fs:1;
1059         struct nfs4_sequence_args       seq_args;
1060 };
1061
1062 struct nfs41_reclaim_complete_res {
1063         struct nfs4_sequence_res        seq_res;
1064 };
1065 #endif /* CONFIG_NFS_V4_1 */
1066
1067 struct nfs_page;
1068
1069 #define NFS_PAGEVEC_SIZE        (8U)
1070
1071 struct nfs_read_data {
1072         int                     flags;
1073         struct rpc_task         task;
1074         struct inode            *inode;
1075         struct rpc_cred         *cred;
1076         struct nfs_fattr        fattr;  /* fattr storage */
1077         struct list_head        pages;  /* Coalesced read requests */
1078         struct nfs_page         *req;   /* multi ops per nfs_page */
1079         struct page             **pagevec;
1080         unsigned int            npages; /* Max length of pagevec */
1081         struct nfs_readargs args;
1082         struct nfs_readres  res;
1083         unsigned long           timestamp;      /* For lease renewal */
1084         struct pnfs_layout_segment *lseg;
1085         struct nfs_client       *ds_clp;        /* pNFS data server */
1086         const struct rpc_call_ops *mds_ops;
1087         int (*read_done_cb) (struct rpc_task *task, struct nfs_read_data *data);
1088         __u64                   mds_offset;
1089         struct page             *page_array[NFS_PAGEVEC_SIZE];
1090 };
1091
1092 struct nfs_write_data {
1093         int                     flags;
1094         struct rpc_task         task;
1095         struct inode            *inode;
1096         struct rpc_cred         *cred;
1097         struct nfs_fattr        fattr;
1098         struct nfs_writeverf    verf;
1099         struct list_head        pages;          /* Coalesced requests we wish to flush */
1100         struct nfs_page         *req;           /* multi ops per nfs_page */
1101         struct page             **pagevec;
1102         unsigned int            npages;         /* Max length of pagevec */
1103         struct nfs_writeargs    args;           /* argument struct */
1104         struct nfs_writeres     res;            /* result struct */
1105         struct pnfs_layout_segment *lseg;
1106         struct nfs_client       *ds_clp;        /* pNFS data server */
1107         int                     ds_commit_index;
1108         const struct rpc_call_ops *mds_ops;
1109         int (*write_done_cb) (struct rpc_task *task, struct nfs_write_data *data);
1110 #ifdef CONFIG_NFS_V4
1111         unsigned long           timestamp;      /* For lease renewal */
1112 #endif
1113         __u64                   mds_offset;     /* Filelayout dense stripe */
1114         struct page             *page_array[NFS_PAGEVEC_SIZE];
1115 };
1116
1117 struct nfs_access_entry;
1118 struct nfs_client;
1119 struct rpc_timeout;
1120
1121 /*
1122  * RPC procedure vector for NFSv2/NFSv3 demuxing
1123  */
1124 struct nfs_rpc_ops {
1125         u32     version;                /* Protocol version */
1126         const struct dentry_operations *dentry_ops;
1127         const struct inode_operations *dir_inode_ops;
1128         const struct inode_operations *file_inode_ops;
1129
1130         int     (*getroot) (struct nfs_server *, struct nfs_fh *,
1131                             struct nfs_fsinfo *);
1132         int     (*lookupfh)(struct nfs_server *, struct nfs_fh *,
1133                             struct qstr *, struct nfs_fh *,
1134                             struct nfs_fattr *);
1135         int     (*getattr) (struct nfs_server *, struct nfs_fh *,
1136                             struct nfs_fattr *);
1137         int     (*setattr) (struct dentry *, struct nfs_fattr *,
1138                             struct iattr *);
1139         int     (*lookup)  (struct rpc_clnt *clnt, struct inode *, struct qstr *,
1140                             struct nfs_fh *, struct nfs_fattr *);
1141         int     (*access)  (struct inode *, struct nfs_access_entry *);
1142         int     (*readlink)(struct inode *, struct page *, unsigned int,
1143                             unsigned int);
1144         int     (*create)  (struct inode *, struct dentry *,
1145                             struct iattr *, int, struct nfs_open_context *);
1146         int     (*remove)  (struct inode *, struct qstr *);
1147         void    (*unlink_setup)  (struct rpc_message *, struct inode *dir);
1148         int     (*unlink_done) (struct rpc_task *, struct inode *);
1149         int     (*rename)  (struct inode *, struct qstr *,
1150                             struct inode *, struct qstr *);
1151         void    (*rename_setup)  (struct rpc_message *msg, struct inode *dir);
1152         int     (*rename_done) (struct rpc_task *task, struct inode *old_dir, struct inode *new_dir);
1153         int     (*link)    (struct inode *, struct inode *, struct qstr *);
1154         int     (*symlink) (struct inode *, struct dentry *, struct page *,
1155                             unsigned int, struct iattr *);
1156         int     (*mkdir)   (struct inode *, struct dentry *, struct iattr *);
1157         int     (*rmdir)   (struct inode *, struct qstr *);
1158         int     (*readdir) (struct dentry *, struct rpc_cred *,
1159                             u64, struct page **, unsigned int, int);
1160         int     (*mknod)   (struct inode *, struct dentry *, struct iattr *,
1161                             dev_t);
1162         int     (*statfs)  (struct nfs_server *, struct nfs_fh *,
1163                             struct nfs_fsstat *);
1164         int     (*fsinfo)  (struct nfs_server *, struct nfs_fh *,
1165                             struct nfs_fsinfo *);
1166         int     (*pathconf) (struct nfs_server *, struct nfs_fh *,
1167                              struct nfs_pathconf *);
1168         int     (*set_capabilities)(struct nfs_server *, struct nfs_fh *);
1169         int     (*decode_dirent)(struct xdr_stream *, struct nfs_entry *, int);
1170         void    (*read_setup)   (struct nfs_read_data *, struct rpc_message *);
1171         int     (*read_done)  (struct rpc_task *, struct nfs_read_data *);
1172         void    (*write_setup)  (struct nfs_write_data *, struct rpc_message *);
1173         int     (*write_done)  (struct rpc_task *, struct nfs_write_data *);
1174         void    (*commit_setup) (struct nfs_write_data *, struct rpc_message *);
1175         int     (*commit_done) (struct rpc_task *, struct nfs_write_data *);
1176         int     (*lock)(struct file *, int, struct file_lock *);
1177         int     (*lock_check_bounds)(const struct file_lock *);
1178         void    (*clear_acl_cache)(struct inode *);
1179         void    (*close_context)(struct nfs_open_context *ctx, int);
1180         struct inode * (*open_context) (struct inode *dir,
1181                                 struct nfs_open_context *ctx,
1182                                 int open_flags,
1183                                 struct iattr *iattr);
1184         int     (*init_client) (struct nfs_client *, const struct rpc_timeout *,
1185                                 const char *, rpc_authflavor_t, int);
1186         int     (*secinfo)(struct inode *, const struct qstr *, struct nfs4_secinfo_flavors *);
1187 };
1188
1189 /*
1190  *      NFS_CALL(getattr, inode, (fattr));
1191  * into
1192  *      NFS_PROTO(inode)->getattr(fattr);
1193  */
1194 #define NFS_CALL(op, inode, args)       NFS_PROTO(inode)->op args
1195
1196 /*
1197  * Function vectors etc. for the NFS client
1198  */
1199 extern const struct nfs_rpc_ops nfs_v2_clientops;
1200 extern const struct nfs_rpc_ops nfs_v3_clientops;
1201 extern const struct nfs_rpc_ops nfs_v4_clientops;
1202 extern struct rpc_version       nfs_version2;
1203 extern struct rpc_version       nfs_version3;
1204 extern struct rpc_version       nfs_version4;
1205
1206 extern struct rpc_version       nfsacl_version3;
1207 extern struct rpc_program       nfsacl_program;
1208
1209 #endif