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