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                     max_rqst_sz;
 162         u32                     max_resp_sz;
 163         u32                     max_resp_sz_cached;
 164         u32                     max_ops;
 165         u32                     max_reqs;
 166 };
 167
 168 /* nfs41 sessions slot seqid */
 169 struct nfs4_slot {
 170         u32                     seq_nr;
 171 };
 172
 173 struct nfs4_sequence_args {
 174         struct nfs4_session     *sa_session;
 175         u8                      sa_slotid;
 176         u8                      sa_cache_this;
 177 };
 178
 179 struct nfs4_sequence_res {
 180         struct nfs4_session     *sr_session;
 181         struct nfs4_slot        *sr_slot;       /* slot used to send request */
 182         int                     sr_status;      /* sequence operation status */
 183         unsigned long           sr_renewal_time;
 184         u32                     sr_status_flags;
 185 };
 186
 187 struct nfs4_get_lease_time_args {
 188         struct nfs4_sequence_args       la_seq_args;
 189 };
 190
 191 struct nfs4_get_lease_time_res {
 192         struct nfs_fsinfo              *lr_fsinfo;
 193         struct nfs4_sequence_res        lr_seq_res;
 194 };
 195
 196 #define PNFS_LAYOUT_MAXSIZE 4096
 197
 198 struct nfs4_layoutdriver_data {
 199         struct page **pages;
 200         __u32 pglen;
 201         __u32 len;
 202 };
 203
 204 struct pnfs_layout_range {
 205         u32 iomode;
 206         u64 offset;
 207         u64 length;
 208 };
 209
 210 struct nfs4_layoutget_args {
 211         __u32 type;
 212         struct pnfs_layout_range range;
 213         __u64 minlength;
 214         __u32 maxcount;
 215         struct inode *inode;
 216         struct nfs_open_context *ctx;
 217         struct nfs4_sequence_args seq_args;
 218         nfs4_stateid stateid;
 219         struct nfs4_layoutdriver_data layout;
 220 };
 221
 222 struct nfs4_layoutget_res {
 223         __u32 return_on_close;
 224         struct pnfs_layout_range range;
 225         __u32 type;
 226         nfs4_stateid stateid;
 227         struct nfs4_sequence_res seq_res;
 228         struct nfs4_layoutdriver_data *layoutp;
 229 };
 230
 231 struct nfs4_layoutget {
 232         struct nfs4_layoutget_args args;
 233         struct nfs4_layoutget_res res;
 234         struct pnfs_layout_segment **lsegpp;
 235         gfp_t gfp_flags;
 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 struct nfs4_layoutreturn_args {
 272         __u32   layout_type;
 273         struct inode *inode;
 274         nfs4_stateid stateid;
 275         struct nfs4_sequence_args seq_args;
 276 };
 277
 278 struct nfs4_layoutreturn_res {
 279         struct nfs4_sequence_res seq_res;
 280         u32 lrs_present;
 281         nfs4_stateid stateid;
 282 };
 283
 284 struct nfs4_layoutreturn {
 285         struct nfs4_layoutreturn_args args;
 286         struct nfs4_layoutreturn_res res;
 287         struct rpc_cred *cred;
 288         struct nfs_client *clp;
 289         int rpc_status;
 290 };
 291
 292 /*
 293  * Arguments to the open call.
 294  */
 295 struct nfs_openargs {
 296         const struct nfs_fh *   fh;
 297         struct nfs_seqid *      seqid;
 298         int                     open_flags;
 299         fmode_t                 fmode;
 300         __u64                   clientid;
 301         __u64                   id;
 302         union {
 303                 struct {
 304                         struct iattr *  attrs;    /* UNCHECKED, GUARDED */
 305                         nfs4_verifier   verifier; /* EXCLUSIVE */
 306                 };
 307                 nfs4_stateid    delegation;             /* CLAIM_DELEGATE_CUR */
 308                 fmode_t         delegation_type;        /* CLAIM_PREVIOUS */
 309         } u;
 310         const struct qstr *     name;
 311         const struct nfs_server *server;         /* Needed for ID mapping */
 312         const u32 *             bitmask;
 313         __u32                   claim;
 314         struct nfs4_sequence_args       seq_args;
 315 };
 316
 317 struct nfs_openres {
 318         nfs4_stateid            stateid;
 319         struct nfs_fh           fh;
 320         struct nfs4_change_info cinfo;
 321         __u32                   rflags;
 322         struct nfs_fattr *      f_attr;
 323         struct nfs_fattr *      dir_attr;
 324         struct nfs_seqid *      seqid;
 325         const struct nfs_server *server;
 326         fmode_t                 delegation_type;
 327         nfs4_stateid            delegation;
 328         __u32                   do_recall;
 329         __u64                   maxsize;
 330         __u32                   attrset[NFS4_BITMAP_SIZE];
 331         struct nfs4_sequence_res        seq_res;
 332 };
 333
 334 /*
 335  * Arguments to the open_confirm call.
 336  */
 337 struct nfs_open_confirmargs {
 338         const struct nfs_fh *   fh;
 339         nfs4_stateid *          stateid;
 340         struct nfs_seqid *      seqid;
 341 };
 342
 343 struct nfs_open_confirmres {
 344         nfs4_stateid            stateid;
 345         struct nfs_seqid *      seqid;
 346 };
 347
 348 /*
 349  * Arguments to the close call.
 350  */
 351 struct nfs_closeargs {
 352         struct nfs_fh *         fh;
 353         nfs4_stateid *          stateid;
 354         struct nfs_seqid *      seqid;
 355         fmode_t                 fmode;
 356         const u32 *             bitmask;
 357         struct nfs4_sequence_args       seq_args;
 358 };
 359
 360 struct nfs_closeres {
 361         nfs4_stateid            stateid;
 362         struct nfs_fattr *      fattr;
 363         struct nfs_seqid *      seqid;
 364         const struct nfs_server *server;
 365         struct nfs4_sequence_res        seq_res;
 366 };
 367 /*
 368  *  * Arguments to the lock,lockt, and locku call.
 369  *   */
 370 struct nfs_lowner {
 371         __u64                   clientid;
 372         __u64                   id;
 373         dev_t                   s_dev;
 374 };
 375
 376 struct nfs_lock_args {
 377         struct nfs_fh *         fh;
 378         struct file_lock *      fl;
 379         struct nfs_seqid *      lock_seqid;
 380         nfs4_stateid *          lock_stateid;
 381         struct nfs_seqid *      open_seqid;
 382         nfs4_stateid *          open_stateid;
 383         struct nfs_lowner       lock_owner;
 384         unsigned char           block : 1;
 385         unsigned char           reclaim : 1;
 386         unsigned char           new_lock_owner : 1;
 387         struct nfs4_sequence_args       seq_args;
 388 };
 389
 390 struct nfs_lock_res {
 391         nfs4_stateid            stateid;
 392         struct nfs_seqid *      lock_seqid;
 393         struct nfs_seqid *      open_seqid;
 394         struct nfs4_sequence_res        seq_res;
 395 };
 396
 397 struct nfs_locku_args {
 398         struct nfs_fh *         fh;
 399         struct file_lock *      fl;
 400         struct nfs_seqid *      seqid;
 401         nfs4_stateid *          stateid;
 402         struct nfs4_sequence_args       seq_args;
 403 };
 404
 405 struct nfs_locku_res {
 406         nfs4_stateid            stateid;
 407         struct nfs_seqid *      seqid;
 408         struct nfs4_sequence_res        seq_res;
 409 };
 410
 411 struct nfs_lockt_args {
 412         struct nfs_fh *         fh;
 413         struct file_lock *      fl;
 414         struct nfs_lowner       lock_owner;
 415         struct nfs4_sequence_args       seq_args;
 416 };
 417
 418 struct nfs_lockt_res {
 419         struct file_lock *      denied; /* LOCK, LOCKT failed */
 420         struct nfs4_sequence_res        seq_res;
 421 };
 422
 423 struct nfs_release_lockowner_args {
 424         struct nfs_lowner       lock_owner;
 425 };
 426
 427 struct nfs4_delegreturnargs {
 428         const struct nfs_fh *fhandle;
 429         const nfs4_stateid *stateid;
 430         const u32 * bitmask;
 431         struct nfs4_sequence_args       seq_args;
 432 };
 433
 434 struct nfs4_delegreturnres {
 435         struct nfs_fattr * fattr;
 436         const struct nfs_server *server;
 437         struct nfs4_sequence_res        seq_res;
 438 };
 439
 440 /*
 441  * Arguments to the read call.
 442  */
 443 struct nfs_readargs {
 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         unsigned int            pgbase;
 450         struct page **          pages;
 451         struct nfs4_sequence_args       seq_args;
 452 };
 453
 454 struct nfs_readres {
 455         struct nfs_fattr *      fattr;
 456         __u32                   count;
 457         int                     eof;
 458         struct nfs4_sequence_res        seq_res;
 459 };
 460
 461 /*
 462  * Arguments to the write call.
 463  */
 464 struct nfs_writeargs {
 465         struct nfs_fh *         fh;
 466         struct nfs_open_context *context;
 467         struct nfs_lock_context *lock_context;
 468         __u64                   offset;
 469         __u32                   count;
 470         enum nfs3_stable_how    stable;
 471         unsigned int            pgbase;
 472         struct page **          pages;
 473         const u32 *             bitmask;
 474         struct nfs4_sequence_args       seq_args;
 475 };
 476
 477 struct nfs_writeverf {
 478         enum nfs3_stable_how    committed;
 479         __be32                  verifier[2];
 480 };
 481
 482 struct nfs_writeres {
 483         struct nfs_fattr *      fattr;
 484         struct nfs_writeverf *  verf;
 485         __u32                   count;
 486         const struct nfs_server *server;
 487         struct nfs4_sequence_res        seq_res;
 488 };
 489
 490 /*
 491  * Common arguments to the unlink call
 492  */
 493 struct nfs_removeargs {
 494         const struct nfs_fh     *fh;
 495         struct qstr             name;
 496         const u32 *             bitmask;
 497         struct nfs4_sequence_args       seq_args;
 498 };
 499
 500 struct nfs_removeres {
 501         const struct nfs_server *server;
 502         struct nfs_fattr        *dir_attr;
 503         struct nfs4_change_info cinfo;
 504         struct nfs4_sequence_res        seq_res;
 505 };
 506
 507 /*
 508  * Common arguments to the rename call
 509  */
 510 struct nfs_renameargs {
 511         const struct nfs_fh             *old_dir;
 512         const struct nfs_fh             *new_dir;
 513         const struct qstr               *old_name;
 514         const struct qstr               *new_name;
 515         const u32                       *bitmask;
 516         struct nfs4_sequence_args       seq_args;
 517 };
 518
 519 struct nfs_renameres {
 520         const struct nfs_server         *server;
 521         struct nfs4_change_info         old_cinfo;
 522         struct nfs_fattr                *old_fattr;
 523         struct nfs4_change_info         new_cinfo;
 524         struct nfs_fattr                *new_fattr;
 525         struct nfs4_sequence_res        seq_res;
 526 };
 527
 528 /*
 529  * Argument struct for decode_entry function
 530  */
 531 struct nfs_entry {
 532         __u64                   ino;
 533         __u64                   cookie,
 534                                 prev_cookie;
 535         const char *            name;
 536         unsigned int            len;
 537         int                     eof;
 538         struct nfs_fh *         fh;
 539         struct nfs_fattr *      fattr;
 540         unsigned char           d_type;
 541         struct nfs_server *     server;
 542 };
 543
 544 /*
 545  * The following types are for NFSv2 only.
 546  */
 547 struct nfs_sattrargs {
 548         struct nfs_fh *         fh;
 549         struct iattr *          sattr;
 550 };
 551
 552 struct nfs_diropargs {
 553         struct nfs_fh *         fh;
 554         const char *            name;
 555         unsigned int            len;
 556 };
 557
 558 struct nfs_createargs {
 559         struct nfs_fh *         fh;
 560         const char *            name;
 561         unsigned int            len;
 562         struct iattr *          sattr;
 563 };
 564
 565 struct nfs_setattrargs {
 566         struct nfs_fh *                 fh;
 567         nfs4_stateid                    stateid;
 568         struct iattr *                  iap;
 569         const struct nfs_server *       server; /* Needed for name mapping */
 570         const u32 *                     bitmask;
 571         struct nfs4_sequence_args       seq_args;
 572 };
 573
 574 struct nfs_setaclargs {
 575         struct nfs_fh *                 fh;
 576         size_t                          acl_len;
 577         unsigned int                    acl_pgbase;
 578         struct page **                  acl_pages;
 579         struct nfs4_sequence_args       seq_args;
 580 };
 581
 582 struct nfs_setaclres {
 583         struct nfs4_sequence_res        seq_res;
 584 };
 585
 586 struct nfs_getaclargs {
 587         struct nfs_fh *                 fh;
 588         size_t                          acl_len;
 589         unsigned int                    acl_pgbase;
 590         struct page **                  acl_pages;
 591         struct nfs4_sequence_args       seq_args;
 592 };
 593
 594 struct nfs_getaclres {
 595         size_t                          acl_len;
 596         struct nfs4_sequence_res        seq_res;
 597 };
 598
 599 struct nfs_setattrres {
 600         struct nfs_fattr *              fattr;
 601         const struct nfs_server *       server;
 602         struct nfs4_sequence_res        seq_res;
 603 };
 604
 605 struct nfs_linkargs {
 606         struct nfs_fh *         fromfh;
 607         struct nfs_fh *         tofh;
 608         const char *            toname;
 609         unsigned int            tolen;
 610 };
 611
 612 struct nfs_symlinkargs {
 613         struct nfs_fh *         fromfh;
 614         const char *            fromname;
 615         unsigned int            fromlen;
 616         struct page **          pages;
 617         unsigned int            pathlen;
 618         struct iattr *          sattr;
 619 };
 620
 621 struct nfs_readdirargs {
 622         struct nfs_fh *         fh;
 623         __u32                   cookie;
 624         unsigned int            count;
 625         struct page **          pages;
 626 };
 627
 628 struct nfs3_getaclargs {
 629         struct nfs_fh *         fh;
 630         int                     mask;
 631         struct page **          pages;
 632 };
 633
 634 struct nfs3_setaclargs {
 635         struct inode *          inode;
 636         int                     mask;
 637         struct posix_acl *      acl_access;
 638         struct posix_acl *      acl_default;
 639         size_t                  len;
 640         unsigned int            npages;
 641         struct page **          pages;
 642 };
 643
 644 struct nfs_diropok {
 645         struct nfs_fh *         fh;
 646         struct nfs_fattr *      fattr;
 647 };
 648
 649 struct nfs_readlinkargs {
 650         struct nfs_fh *         fh;
 651         unsigned int            pgbase;
 652         unsigned int            pglen;
 653         struct page **          pages;
 654 };
 655
 656 struct nfs3_sattrargs {
 657         struct nfs_fh *         fh;
 658         struct iattr *          sattr;
 659         unsigned int            guard;
 660         struct timespec         guardtime;
 661 };
 662
 663 struct nfs3_diropargs {
 664         struct nfs_fh *         fh;
 665         const char *            name;
 666         unsigned int            len;
 667 };
 668
 669 struct nfs3_accessargs {
 670         struct nfs_fh *         fh;
 671         __u32                   access;
 672 };
 673
 674 struct nfs3_createargs {
 675         struct nfs_fh *         fh;
 676         const char *            name;
 677         unsigned int            len;
 678         struct iattr *          sattr;
 679         enum nfs3_createmode    createmode;
 680         __be32                  verifier[2];
 681 };
 682
 683 struct nfs3_mkdirargs {
 684         struct nfs_fh *         fh;
 685         const char *            name;
 686         unsigned int            len;
 687         struct iattr *          sattr;
 688 };
 689
 690 struct nfs3_symlinkargs {
 691         struct nfs_fh *         fromfh;
 692         const char *            fromname;
 693         unsigned int            fromlen;
 694         struct page **          pages;
 695         unsigned int            pathlen;
 696         struct iattr *          sattr;
 697 };
 698
 699 struct nfs3_mknodargs {
 700         struct nfs_fh *         fh;
 701         const char *            name;
 702         unsigned int            len;
 703         enum nfs3_ftype         type;
 704         struct iattr *          sattr;
 705         dev_t                   rdev;
 706 };
 707
 708 struct nfs3_linkargs {
 709         struct nfs_fh *         fromfh;
 710         struct nfs_fh *         tofh;
 711         const char *            toname;
 712         unsigned int            tolen;
 713 };
 714
 715 struct nfs3_readdirargs {
 716         struct nfs_fh *         fh;
 717         __u64                   cookie;
 718         __be32                  verf[2];
 719         int                     plus;
 720         unsigned int            count;
 721         struct page **          pages;
 722 };
 723
 724 struct nfs3_diropres {
 725         struct nfs_fattr *      dir_attr;
 726         struct nfs_fh *         fh;
 727         struct nfs_fattr *      fattr;
 728 };
 729
 730 struct nfs3_accessres {
 731         struct nfs_fattr *      fattr;
 732         __u32                   access;
 733 };
 734
 735 struct nfs3_readlinkargs {
 736         struct nfs_fh *         fh;
 737         unsigned int            pgbase;
 738         unsigned int            pglen;
 739         struct page **          pages;
 740 };
 741
 742 struct nfs3_linkres {
 743         struct nfs_fattr *      dir_attr;
 744         struct nfs_fattr *      fattr;
 745 };
 746
 747 struct nfs3_readdirres {
 748         struct nfs_fattr *      dir_attr;
 749         __be32 *                verf;
 750         int                     plus;
 751 };
 752
 753 struct nfs3_getaclres {
 754         struct nfs_fattr *      fattr;
 755         int                     mask;
 756         unsigned int            acl_access_count;
 757         unsigned int            acl_default_count;
 758         struct posix_acl *      acl_access;
 759         struct posix_acl *      acl_default;
 760 };
 761
 762 #ifdef CONFIG_NFS_V4
 763
 764 typedef u64 clientid4;
 765
 766 struct nfs4_accessargs {
 767         const struct nfs_fh *           fh;
 768         const u32 *                     bitmask;
 769         u32                             access;
 770         struct nfs4_sequence_args       seq_args;
 771 };
 772
 773 struct nfs4_accessres {
 774         const struct nfs_server *       server;
 775         struct nfs_fattr *              fattr;
 776         u32                             supported;
 777         u32                             access;
 778         struct nfs4_sequence_res        seq_res;
 779 };
 780
 781 struct nfs4_create_arg {
 782         u32                             ftype;
 783         union {
 784                 struct {
 785                         struct page **  pages;
 786                         unsigned int    len;
 787                 } symlink;   /* NF4LNK */
 788                 struct {
 789                         u32             specdata1;
 790                         u32             specdata2;
 791                 } device;    /* NF4BLK, NF4CHR */
 792         } u;
 793         const struct qstr *             name;
 794         const struct nfs_server *       server;
 795         const struct iattr *            attrs;
 796         const struct nfs_fh *           dir_fh;
 797         const u32 *                     bitmask;
 798         struct nfs4_sequence_args       seq_args;
 799 };
 800
 801 struct nfs4_create_res {
 802         const struct nfs_server *       server;
 803         struct nfs_fh *                 fh;
 804         struct nfs_fattr *              fattr;
 805         struct nfs4_change_info         dir_cinfo;
 806         struct nfs_fattr *              dir_fattr;
 807         struct nfs4_sequence_res        seq_res;
 808 };
 809
 810 struct nfs4_fsinfo_arg {
 811         const struct nfs_fh *           fh;
 812         const u32 *                     bitmask;
 813         struct nfs4_sequence_args       seq_args;
 814 };
 815
 816 struct nfs4_fsinfo_res {
 817         struct nfs_fsinfo              *fsinfo;
 818         struct nfs4_sequence_res        seq_res;
 819 };
 820
 821 struct nfs4_getattr_arg {
 822         const struct nfs_fh *           fh;
 823         const u32 *                     bitmask;
 824         struct nfs4_sequence_args       seq_args;
 825 };
 826
 827 struct nfs4_getattr_res {
 828         const struct nfs_server *       server;
 829         struct nfs_fattr *              fattr;
 830         struct nfs4_sequence_res        seq_res;
 831 };
 832
 833 struct nfs4_link_arg {
 834         const struct nfs_fh *           fh;
 835         const struct nfs_fh *           dir_fh;
 836         const struct qstr *             name;
 837         const u32 *                     bitmask;
 838         struct nfs4_sequence_args       seq_args;
 839 };
 840
 841 struct nfs4_link_res {
 842         const struct nfs_server *       server;
 843         struct nfs_fattr *              fattr;
 844         struct nfs4_change_info         cinfo;
 845         struct nfs_fattr *              dir_attr;
 846         struct nfs4_sequence_res        seq_res;
 847 };
 848
 849
 850 struct nfs4_lookup_arg {
 851         const struct nfs_fh *           dir_fh;
 852         const struct qstr *             name;
 853         const u32 *                     bitmask;
 854         struct nfs4_sequence_args       seq_args;
 855 };
 856
 857 struct nfs4_lookup_res {
 858         const struct nfs_server *       server;
 859         struct nfs_fattr *              fattr;
 860         struct nfs_fh *                 fh;
 861         struct nfs4_sequence_res        seq_res;
 862 };
 863
 864 struct nfs4_lookup_root_arg {
 865         const u32 *                     bitmask;
 866         struct nfs4_sequence_args       seq_args;
 867 };
 868
 869 struct nfs4_pathconf_arg {
 870         const struct nfs_fh *           fh;
 871         const u32 *                     bitmask;
 872         struct nfs4_sequence_args       seq_args;
 873 };
 874
 875 struct nfs4_pathconf_res {
 876         struct nfs_pathconf            *pathconf;
 877         struct nfs4_sequence_res        seq_res;
 878 };
 879
 880 struct nfs4_readdir_arg {
 881         const struct nfs_fh *           fh;
 882         u64                             cookie;
 883         nfs4_verifier                   verifier;
 884         u32                             count;
 885         struct page **                  pages;  /* zero-copy data */
 886         unsigned int                    pgbase; /* zero-copy data */
 887         const u32 *                     bitmask;
 888         int                             plus;
 889         struct nfs4_sequence_args       seq_args;
 890 };
 891
 892 struct nfs4_readdir_res {
 893         nfs4_verifier                   verifier;
 894         unsigned int                    pgbase;
 895         struct nfs4_sequence_res        seq_res;
 896 };
 897
 898 struct nfs4_readlink {
 899         const struct nfs_fh *           fh;
 900         unsigned int                    pgbase;
 901         unsigned int                    pglen;   /* zero-copy data */
 902         struct page **                  pages;   /* zero-copy data */
 903         struct nfs4_sequence_args       seq_args;
 904 };
 905
 906 struct nfs4_readlink_res {
 907         struct nfs4_sequence_res        seq_res;
 908 };
 909
 910 #define NFS4_SETCLIENTID_NAMELEN        (127)
 911 struct nfs4_setclientid {
 912         const nfs4_verifier *           sc_verifier;
 913         unsigned int                    sc_name_len;
 914         char                            sc_name[NFS4_SETCLIENTID_NAMELEN + 1];
 915         u32                             sc_prog;
 916         unsigned int                    sc_netid_len;
 917         char                            sc_netid[RPCBIND_MAXNETIDLEN + 1];
 918         unsigned int                    sc_uaddr_len;
 919         char                            sc_uaddr[RPCBIND_MAXUADDRLEN + 1];
 920         u32                             sc_cb_ident;
 921 };
 922
 923 struct nfs4_setclientid_res {
 924         u64                             clientid;
 925         nfs4_verifier                   confirm;
 926 };
 927
 928 struct nfs4_statfs_arg {
 929         const struct nfs_fh *           fh;
 930         const u32 *                     bitmask;
 931         struct nfs4_sequence_args       seq_args;
 932 };
 933
 934 struct nfs4_statfs_res {
 935         struct nfs_fsstat              *fsstat;
 936         struct nfs4_sequence_res        seq_res;
 937 };
 938
 939 struct nfs4_server_caps_arg {
 940         struct nfs_fh                  *fhandle;
 941         struct nfs4_sequence_args       seq_args;
 942 };
 943
 944 struct nfs4_server_caps_res {
 945         u32                             attr_bitmask[2];
 946         u32                             acl_bitmask;
 947         u32                             has_links;
 948         u32                             has_symlinks;
 949         struct nfs4_sequence_res        seq_res;
 950 };
 951
 952 struct nfs4_string {
 953         unsigned int len;
 954         char *data;
 955 };
 956
 957 #define NFS4_PATHNAME_MAXCOMPONENTS 512
 958 struct nfs4_pathname {
 959         unsigned int ncomponents;
 960         struct nfs4_string components[NFS4_PATHNAME_MAXCOMPONENTS];
 961 };
 962
 963 #define NFS4_FS_LOCATION_MAXSERVERS 10
 964 struct nfs4_fs_location {
 965         unsigned int nservers;
 966         struct nfs4_string servers[NFS4_FS_LOCATION_MAXSERVERS];
 967         struct nfs4_pathname rootpath;
 968 };
 969
 970 #define NFS4_FS_LOCATIONS_MAXENTRIES 10
 971 struct nfs4_fs_locations {
 972         struct nfs_fattr fattr;
 973         const struct nfs_server *server;
 974         struct nfs4_pathname fs_path;
 975         int nlocations;
 976         struct nfs4_fs_location locations[NFS4_FS_LOCATIONS_MAXENTRIES];
 977 };
 978
 979 struct nfs4_fs_locations_arg {
 980         const struct nfs_fh *dir_fh;
 981         const struct qstr *name;
 982         struct page *page;
 983         const u32 *bitmask;
 984         struct nfs4_sequence_args       seq_args;
 985 };
 986
 987 struct nfs4_fs_locations_res {
 988         struct nfs4_fs_locations       *fs_locations;
 989         struct nfs4_sequence_res        seq_res;
 990 };
 991
 992 struct nfs4_secinfo_oid {
 993         unsigned int len;
 994         char data[GSS_OID_MAX_LEN];
 995 };
 996
 997 struct nfs4_secinfo_gss {
 998         struct nfs4_secinfo_oid sec_oid4;
 999         unsigned int qop4;
1000         unsigned int service;
1001 };
1002
1003 struct nfs4_secinfo_flavor {
1004         unsigned int            flavor;
1005         struct nfs4_secinfo_gss gss;
1006 };
1007
1008 struct nfs4_secinfo_flavors {
1009         unsigned int num_flavors;
1010         struct nfs4_secinfo_flavor flavors[0];
1011 };
1012
1013 struct nfs4_secinfo_arg {
1014         const struct nfs_fh             *dir_fh;
1015         const struct qstr               *name;
1016         struct nfs4_sequence_args       seq_args;
1017 };
1018
1019 struct nfs4_secinfo_res {
1020         struct nfs4_secinfo_flavors     *flavors;
1021         struct nfs4_sequence_res        seq_res;
1022 };
1023
1024 #endif /* CONFIG_NFS_V4 */
1025
1026 struct nfstime4 {
1027         u64     seconds;
1028         u32     nseconds;
1029 };
1030
1031 #ifdef CONFIG_NFS_V4_1
1032 struct nfs_impl_id4 {
1033         u32             domain_len;
1034         char            *domain;
1035         u32             name_len;
1036         char            *name;
1037         struct nfstime4 date;
1038 };
1039
1040 #define NFS4_EXCHANGE_ID_LEN    (48)
1041 struct nfs41_exchange_id_args {
1042         struct nfs_client               *client;
1043         nfs4_verifier                   *verifier;
1044         unsigned int                    id_len;
1045         char                            id[NFS4_EXCHANGE_ID_LEN];
1046         u32                             flags;
1047 };
1048
1049 struct server_owner {
1050         uint64_t                        minor_id;
1051         uint32_t                        major_id_sz;
1052         char                            major_id[NFS4_OPAQUE_LIMIT];
1053 };
1054
1055 struct server_scope {
1056         uint32_t                        server_scope_sz;
1057         char                            server_scope[NFS4_OPAQUE_LIMIT];
1058 };
1059
1060 struct nfs41_exchange_id_res {
1061         struct nfs_client               *client;
1062         u32                             flags;
1063 };
1064
1065 struct nfs41_create_session_args {
1066         struct nfs_client              *client;
1067         uint32_t                        flags;
1068         uint32_t                        cb_program;
1069         struct nfs4_channel_attrs       fc_attrs;       /* Fore Channel */
1070         struct nfs4_channel_attrs       bc_attrs;       /* Back Channel */
1071 };
1072
1073 struct nfs41_create_session_res {
1074         struct nfs_client              *client;
1075 };
1076
1077 struct nfs41_reclaim_complete_args {
1078         /* In the future extend to include curr_fh for use with migration */
1079         unsigned char                   one_fs:1;
1080         struct nfs4_sequence_args       seq_args;
1081 };
1082
1083 struct nfs41_reclaim_complete_res {
1084         struct nfs4_sequence_res        seq_res;
1085 };
1086 #endif /* CONFIG_NFS_V4_1 */
1087
1088 struct nfs_page;
1089
1090 #define NFS_PAGEVEC_SIZE        (8U)
1091
1092 struct nfs_read_data {
1093         int                     flags;
1094         struct rpc_task         task;
1095         struct inode            *inode;
1096         struct rpc_cred         *cred;
1097         struct nfs_fattr        fattr;  /* fattr storage */
1098         struct list_head        pages;  /* Coalesced read requests */
1099         struct nfs_page         *req;   /* multi ops per nfs_page */
1100         struct page             **pagevec;
1101         unsigned int            npages; /* Max length of pagevec */
1102         struct nfs_readargs args;
1103         struct nfs_readres  res;
1104         unsigned long           timestamp;      /* For lease renewal */
1105         struct pnfs_layout_segment *lseg;
1106         struct nfs_client       *ds_clp;        /* pNFS data server */
1107         const struct rpc_call_ops *mds_ops;
1108         int (*read_done_cb) (struct rpc_task *task, struct nfs_read_data *data);
1109         __u64                   mds_offset;
1110         int                     pnfs_error;
1111         struct page             *page_array[NFS_PAGEVEC_SIZE];
1112 };
1113
1114 struct nfs_write_data {
1115         int                     flags;
1116         struct rpc_task         task;
1117         struct inode            *inode;
1118         struct rpc_cred         *cred;
1119         struct nfs_fattr        fattr;
1120         struct nfs_writeverf    verf;
1121         struct list_head        pages;          /* Coalesced requests we wish to flush */
1122         struct nfs_page         *req;           /* multi ops per nfs_page */
1123         struct page             **pagevec;
1124         unsigned int            npages;         /* Max length of pagevec */
1125         struct nfs_writeargs    args;           /* argument struct */
1126         struct nfs_writeres     res;            /* result struct */
1127         struct pnfs_layout_segment *lseg;
1128         struct nfs_client       *ds_clp;        /* pNFS data server */
1129         int                     ds_commit_index;
1130         const struct rpc_call_ops *mds_ops;
1131         int (*write_done_cb) (struct rpc_task *task, struct nfs_write_data *data);
1132 #ifdef CONFIG_NFS_V4
1133         unsigned long           timestamp;      /* For lease renewal */
1134 #endif
1135         __u64                   mds_offset;     /* Filelayout dense stripe */
1136         int                     pnfs_error;
1137         struct page             *page_array[NFS_PAGEVEC_SIZE];
1138 };
1139
1140 struct nfs_access_entry;
1141 struct nfs_client;
1142 struct rpc_timeout;
1143
1144 /*
1145  * RPC procedure vector for NFSv2/NFSv3 demuxing
1146  */
1147 struct nfs_rpc_ops {
1148         u32     version;                /* Protocol version */
1149         const struct dentry_operations *dentry_ops;
1150         const struct inode_operations *dir_inode_ops;
1151         const struct inode_operations *file_inode_ops;
1152
1153         int     (*getroot) (struct nfs_server *, struct nfs_fh *,
1154                             struct nfs_fsinfo *);
1155         int     (*lookupfh)(struct nfs_server *, struct nfs_fh *,
1156                             struct qstr *, struct nfs_fh *,
1157                             struct nfs_fattr *);
1158         int     (*getattr) (struct nfs_server *, struct nfs_fh *,
1159                             struct nfs_fattr *);
1160         int     (*setattr) (struct dentry *, struct nfs_fattr *,
1161                             struct iattr *);
1162         int     (*lookup)  (struct rpc_clnt *clnt, struct inode *, struct qstr *,
1163                             struct nfs_fh *, struct nfs_fattr *);
1164         int     (*access)  (struct inode *, struct nfs_access_entry *);
1165         int     (*readlink)(struct inode *, struct page *, unsigned int,
1166                             unsigned int);
1167         int     (*create)  (struct inode *, struct dentry *,
1168                             struct iattr *, int, struct nfs_open_context *);
1169         int     (*remove)  (struct inode *, struct qstr *);
1170         void    (*unlink_setup)  (struct rpc_message *, struct inode *dir);
1171         int     (*unlink_done) (struct rpc_task *, struct inode *);
1172         int     (*rename)  (struct inode *, struct qstr *,
1173                             struct inode *, struct qstr *);
1174         void    (*rename_setup)  (struct rpc_message *msg, struct inode *dir);
1175         int     (*rename_done) (struct rpc_task *task, struct inode *old_dir, struct inode *new_dir);
1176         int     (*link)    (struct inode *, struct inode *, struct qstr *);
1177         int     (*symlink) (struct inode *, struct dentry *, struct page *,
1178                             unsigned int, struct iattr *);
1179         int     (*mkdir)   (struct inode *, struct dentry *, struct iattr *);
1180         int     (*rmdir)   (struct inode *, struct qstr *);
1181         int     (*readdir) (struct dentry *, struct rpc_cred *,
1182                             u64, struct page **, unsigned int, int);
1183         int     (*mknod)   (struct inode *, struct dentry *, struct iattr *,
1184                             dev_t);
1185         int     (*statfs)  (struct nfs_server *, struct nfs_fh *,
1186                             struct nfs_fsstat *);
1187         int     (*fsinfo)  (struct nfs_server *, struct nfs_fh *,
1188                             struct nfs_fsinfo *);
1189         int     (*pathconf) (struct nfs_server *, struct nfs_fh *,
1190                              struct nfs_pathconf *);
1191         int     (*set_capabilities)(struct nfs_server *, struct nfs_fh *);
1192         int     (*decode_dirent)(struct xdr_stream *, struct nfs_entry *, int);
1193         void    (*read_setup)   (struct nfs_read_data *, struct rpc_message *);
1194         int     (*read_done)  (struct rpc_task *, struct nfs_read_data *);
1195         void    (*write_setup)  (struct nfs_write_data *, struct rpc_message *);
1196         int     (*write_done)  (struct rpc_task *, struct nfs_write_data *);
1197         void    (*commit_setup) (struct nfs_write_data *, struct rpc_message *);
1198         int     (*commit_done) (struct rpc_task *, struct nfs_write_data *);
1199         int     (*lock)(struct file *, int, struct file_lock *);
1200         int     (*lock_check_bounds)(const struct file_lock *);
1201         void    (*clear_acl_cache)(struct inode *);
1202         void    (*close_context)(struct nfs_open_context *ctx, int);
1203         struct inode * (*open_context) (struct inode *dir,
1204                                 struct nfs_open_context *ctx,
1205                                 int open_flags,
1206                                 struct iattr *iattr);
1207         int     (*init_client) (struct nfs_client *, const struct rpc_timeout *,
1208                                 const char *, rpc_authflavor_t, int);
1209         int     (*secinfo)(struct inode *, const struct qstr *, struct nfs4_secinfo_flavors *);
1210 };
1211
1212 /*
1213  *      NFS_CALL(getattr, inode, (fattr));
1214  * into
1215  *      NFS_PROTO(inode)->getattr(fattr);
1216  */
1217 #define NFS_CALL(op, inode, args)       NFS_PROTO(inode)->op args
1218
1219 /*
1220  * Function vectors etc. for the NFS client
1221  */
1222 extern const struct nfs_rpc_ops nfs_v2_clientops;
1223 extern const struct nfs_rpc_ops nfs_v3_clientops;
1224 extern const struct nfs_rpc_ops nfs_v4_clientops;
1225 extern struct rpc_version       nfs_version2;
1226 extern struct rpc_version       nfs_version3;
1227 extern struct rpc_version       nfs_version4;
1228
1229 extern struct rpc_version       nfsacl_version3;
1230 extern struct rpc_program       nfsacl_program;
1231
1232 #endif