include/linux/nfs_xdr.h

   1 #ifndef _LINUX_NFS_XDR_H
   2 #define _LINUX_NFS_XDR_H
   3
   4 #include <linux/nfsacl.h>
   5 #include <linux/nfs3.h>
   6 #include <linux/sunrpc/gss_api.h>
   7
   8 /*
   9  * To change the maximum rsize and wsize supported by the NFS client, adjust
  10  * NFS_MAX_FILE_IO_SIZE.  64KB is a typical maximum, but some servers can
  11  * support a megabyte or more.  The default is left at 4096 bytes, which is
  12  * reasonable for NFS over UDP.
  13  */
  14 #define NFS_MAX_FILE_IO_SIZE    (1048576U)
  15 #define NFS_DEF_FILE_IO_SIZE    (4096U)
  16 #define NFS_MIN_FILE_IO_SIZE    (1024U)
  17
  18 /* Forward declaration for NFS v3 */
  19 struct nfs4_secinfo_flavors;
  20
  21 struct nfs_fsid {
  22         uint64_t                major;
  23         uint64_t                minor;
  24 };
  25
  26 /*
  27  * Helper for checking equality between 2 fsids.
  28  */
  29 static inline int nfs_fsid_equal(const struct nfs_fsid *a, const struct nfs_fsid *b)
  30 {
  31         return a->major == b->major && a->minor == b->minor;
  32 }
  33
  34 struct nfs_fattr {
  35         unsigned int            valid;          /* which fields are valid */
  36         umode_t                 mode;
  37         __u32                   nlink;
  38         __u32                   uid;
  39         __u32                   gid;
  40         dev_t                   rdev;
  41         __u64                   size;
  42         union {
  43                 struct {
  44                         __u32   blocksize;
  45                         __u32   blocks;
  46                 } nfs2;
  47                 struct {
  48                         __u64   used;
  49                 } nfs3;
  50         } du;
  51         struct nfs_fsid         fsid;
  52         __u64                   fileid;
  53         __u64                   mounted_on_fileid;
  54         struct timespec         atime;
  55         struct timespec         mtime;
  56         struct timespec         ctime;
  57         __u64                   change_attr;    /* NFSv4 change attribute */
  58         __u64                   pre_change_attr;/* pre-op NFSv4 change attribute */
  59         __u64                   pre_size;       /* pre_op_attr.size       */
  60         struct timespec         pre_mtime;      /* pre_op_attr.mtime      */
  61         struct timespec         pre_ctime;      /* pre_op_attr.ctime      */
  62         unsigned long           time_start;
  63         unsigned long           gencount;
  64 };
  65
  66 #define NFS_ATTR_FATTR_TYPE             (1U << 0)
  67 #define NFS_ATTR_FATTR_MODE             (1U << 1)
  68 #define NFS_ATTR_FATTR_NLINK            (1U << 2)
  69 #define NFS_ATTR_FATTR_OWNER            (1U << 3)
  70 #define NFS_ATTR_FATTR_GROUP            (1U << 4)
  71 #define NFS_ATTR_FATTR_RDEV             (1U << 5)
  72 #define NFS_ATTR_FATTR_SIZE             (1U << 6)
  73 #define NFS_ATTR_FATTR_PRESIZE          (1U << 7)
  74 #define NFS_ATTR_FATTR_BLOCKS_USED      (1U << 8)
  75 #define NFS_ATTR_FATTR_SPACE_USED       (1U << 9)
  76 #define NFS_ATTR_FATTR_FSID             (1U << 10)
  77 #define NFS_ATTR_FATTR_FILEID           (1U << 11)
  78 #define NFS_ATTR_FATTR_ATIME            (1U << 12)
  79 #define NFS_ATTR_FATTR_MTIME            (1U << 13)
  80 #define NFS_ATTR_FATTR_CTIME            (1U << 14)
  81 #define NFS_ATTR_FATTR_PREMTIME         (1U << 15)
  82 #define NFS_ATTR_FATTR_PRECTIME         (1U << 16)
  83 #define NFS_ATTR_FATTR_CHANGE           (1U << 17)
  84 #define NFS_ATTR_FATTR_PRECHANGE        (1U << 18)
  85 #define NFS_ATTR_FATTR_V4_REFERRAL      (1U << 19)      /* NFSv4 referral */
  86 #define NFS_ATTR_FATTR_MOUNTPOINT       (1U << 20)      /* Treat as mountpoint */
  87 #define NFS_ATTR_FATTR_MOUNTED_ON_FILEID                (1U << 21)
  88
  89 #define NFS_ATTR_FATTR (NFS_ATTR_FATTR_TYPE \
  90                 | NFS_ATTR_FATTR_MODE \
  91                 | NFS_ATTR_FATTR_NLINK \
  92                 | NFS_ATTR_FATTR_OWNER \
  93                 | NFS_ATTR_FATTR_GROUP \
  94                 | NFS_ATTR_FATTR_RDEV \
  95                 | NFS_ATTR_FATTR_SIZE \
  96                 | NFS_ATTR_FATTR_FSID \
  97                 | NFS_ATTR_FATTR_FILEID \
  98                 | NFS_ATTR_FATTR_ATIME \
  99                 | NFS_ATTR_FATTR_MTIME \
 100                 | NFS_ATTR_FATTR_CTIME)
 101 #define NFS_ATTR_FATTR_V2 (NFS_ATTR_FATTR \
 102                 | NFS_ATTR_FATTR_BLOCKS_USED)
 103 #define NFS_ATTR_FATTR_V3 (NFS_ATTR_FATTR \
 104                 | NFS_ATTR_FATTR_SPACE_USED)
 105 #define NFS_ATTR_FATTR_V4 (NFS_ATTR_FATTR \
 106                 | NFS_ATTR_FATTR_SPACE_USED \
 107                 | NFS_ATTR_FATTR_CHANGE)
 108
 109 /*
 110  * Info on the file system
 111  */
 112 struct nfs_fsinfo {
 113         struct nfs_fattr        *fattr; /* Post-op attributes */
 114         __u32                   rtmax;  /* max.  read transfer size */
 115         __u32                   rtpref; /* pref. read transfer size */
 116         __u32                   rtmult; /* reads should be multiple of this */
 117         __u32                   wtmax;  /* max.  write transfer size */
 118         __u32                   wtpref; /* pref. write transfer size */
 119         __u32                   wtmult; /* writes should be multiple of this */
 120         __u32                   dtpref; /* pref. readdir transfer size */
 121         __u64                   maxfilesize;
 122         struct timespec         time_delta; /* server time granularity */
 123         __u32                   lease_time; /* in seconds */
 124         __u32                   layouttype; /* supported pnfs layout driver */
 125 };
 126
 127 struct nfs_fsstat {
 128         struct nfs_fattr        *fattr; /* Post-op attributes */
 129         __u64                   tbytes; /* total size in bytes */
 130         __u64                   fbytes; /* # of free bytes */
 131         __u64                   abytes; /* # of bytes available to user */
 132         __u64                   tfiles; /* # of files */
 133         __u64                   ffiles; /* # of free files */
 134         __u64                   afiles; /* # of files available to user */
 135 };
 136
 137 struct nfs2_fsstat {
 138         __u32                   tsize;  /* Server transfer size */
 139         __u32                   bsize;  /* Filesystem block size */
 140         __u32                   blocks; /* No. of "bsize" blocks on filesystem */
 141         __u32                   bfree;  /* No. of free "bsize" blocks */
 142         __u32                   bavail; /* No. of available "bsize" blocks */
 143 };
 144
 145 struct nfs_pathconf {
 146         struct nfs_fattr        *fattr; /* Post-op attributes */
 147         __u32                   max_link; /* max # of hard links */
 148         __u32                   max_namelen; /* max name length */
 149 };
 150
 151 struct nfs4_change_info {
 152         u32                     atomic;
 153         u64                     before;
 154         u64                     after;
 155 };
 156
 157 struct nfs_seqid;
 158
 159 /* nfs41 sessions channel attributes */
 160 struct nfs4_channel_attrs {
 161         u32                     headerpadsz;
 162         u32                     max_rqst_sz;
 163         u32                     max_resp_sz;
 164         u32                     max_resp_sz_cached;
 165         u32                     max_ops;
 166         u32                     max_reqs;
 167 };
 168
 169 /* nfs41 sessions slot seqid */
 170 struct nfs4_slot {
 171         u32                     seq_nr;
 172 };
 173
 174 struct nfs4_sequence_args {
 175         struct nfs4_session     *sa_session;
 176         u8                      sa_slotid;
 177         u8                      sa_cache_this;
 178 };
 179
 180 struct nfs4_sequence_res {
 181         struct nfs4_session     *sr_session;
 182         struct nfs4_slot        *sr_slot;       /* slot used to send request */
 183         int                     sr_status;      /* sequence operation status */
 184         unsigned long           sr_renewal_time;
 185         u32                     sr_status_flags;
 186 };
 187
 188 struct nfs4_get_lease_time_args {
 189         struct nfs4_sequence_args       la_seq_args;
 190 };
 191
 192 struct nfs4_get_lease_time_res {
 193         struct nfs_fsinfo              *lr_fsinfo;
 194         struct nfs4_sequence_res        lr_seq_res;
 195 };
 196
 197 #define PNFS_LAYOUT_MAXSIZE 4096
 198
 199 struct nfs4_layoutdriver_data {
 200         struct page **pages;
 201         __u32 pglen;
 202         __u32 len;
 203 };
 204
 205 struct pnfs_layout_range {
 206         u32 iomode;
 207         u64 offset;
 208         u64 length;
 209 };
 210
 211 struct nfs4_layoutget_args {
 212         __u32 type;
 213         struct pnfs_layout_range range;
 214         __u64 minlength;
 215         __u32 maxcount;
 216         struct inode *inode;
 217         struct nfs_open_context *ctx;
 218         struct nfs4_sequence_args seq_args;
 219         nfs4_stateid stateid;
 220         struct nfs4_layoutdriver_data layout;
 221 };
 222
 223 struct nfs4_layoutget_res {
 224         __u32 return_on_close;
 225         struct pnfs_layout_range range;
 226         __u32 type;
 227         nfs4_stateid stateid;
 228         struct nfs4_sequence_res seq_res;
 229         struct nfs4_layoutdriver_data *layoutp;
 230 };
 231
 232 struct nfs4_layoutget {
 233         struct nfs4_layoutget_args args;
 234         struct nfs4_layoutget_res res;
 235         struct pnfs_layout_segment **lsegpp;
 236         gfp_t gfp_flags;
 237 };
 238
 239 struct nfs4_getdeviceinfo_args {
 240         struct pnfs_device *pdev;
 241         struct nfs4_sequence_args seq_args;
 242 };
 243
 244 struct nfs4_getdeviceinfo_res {
 245         struct pnfs_device *pdev;
 246         struct nfs4_sequence_res seq_res;
 247 };
 248
 249 struct nfs4_layoutcommit_args {
 250         nfs4_stateid stateid;
 251         __u64 lastbytewritten;
 252         struct inode *inode;
 253         const u32 *bitmask;
 254         struct nfs4_sequence_args seq_args;
 255 };
 256
 257 struct nfs4_layoutcommit_res {
 258         struct nfs_fattr *fattr;
 259         const struct nfs_server *server;
 260         struct nfs4_sequence_res seq_res;
 261 };
 262
 263 struct nfs4_layoutcommit_data {
 264         struct rpc_task task;
 265         struct nfs_fattr fattr;
 266         struct pnfs_layout_segment *lseg;
 267         struct rpc_cred *cred;
 268         struct nfs4_layoutcommit_args args;
 269         struct nfs4_layoutcommit_res res;
 270 };
 271
 272 struct nfs4_layoutreturn_args {
 273         __u32   layout_type;
 274         struct inode *inode;
 275         nfs4_stateid stateid;
 276         struct nfs4_sequence_args seq_args;
 277 };
 278
 279 struct nfs4_layoutreturn_res {
 280         struct nfs4_sequence_res seq_res;
 281         u32 lrs_present;
 282         nfs4_stateid stateid;
 283 };
 284
 285 struct nfs4_layoutreturn {
 286         struct nfs4_layoutreturn_args args;
 287         struct nfs4_layoutreturn_res res;
 288         struct rpc_cred *cred;
 289         struct nfs_client *clp;
 290         int rpc_status;
 291 };
 292
 293 /*
 294  * Arguments to the open call.
 295  */
 296 struct nfs_openargs {
 297         const struct nfs_fh *   fh;
 298         struct nfs_seqid *      seqid;
 299         int                     open_flags;
 300         fmode_t                 fmode;
 301         __u64                   clientid;
 302         __u64                   id;
 303         union {
 304                 struct {
 305                         struct iattr *  attrs;    /* UNCHECKED, GUARDED */
 306                         nfs4_verifier   verifier; /* EXCLUSIVE */
 307                 };
 308                 nfs4_stateid    delegation;             /* CLAIM_DELEGATE_CUR */
 309                 fmode_t         delegation_type;        /* CLAIM_PREVIOUS */
 310         } u;
 311         const struct qstr *     name;
 312         const struct nfs_server *server;         /* Needed for ID mapping */
 313         const u32 *             bitmask;
 314         __u32                   claim;
 315         struct nfs4_sequence_args       seq_args;
 316 };
 317
 318 struct nfs_openres {
 319         nfs4_stateid            stateid;
 320         struct nfs_fh           fh;
 321         struct nfs4_change_info cinfo;
 322         __u32                   rflags;
 323         struct nfs_fattr *      f_attr;
 324         struct nfs_fattr *      dir_attr;
 325         struct nfs_seqid *      seqid;
 326         const struct nfs_server *server;
 327         fmode_t                 delegation_type;
 328         nfs4_stateid            delegation;
 329         __u32                   do_recall;
 330         __u64                   maxsize;
 331         __u32                   attrset[NFS4_BITMAP_SIZE];
 332         struct nfs4_sequence_res        seq_res;
 333 };
 334
 335 /*
 336  * Arguments to the open_confirm call.
 337  */
 338 struct nfs_open_confirmargs {
 339         const struct nfs_fh *   fh;
 340         nfs4_stateid *          stateid;
 341         struct nfs_seqid *      seqid;
 342 };
 343
 344 struct nfs_open_confirmres {
 345         nfs4_stateid            stateid;
 346         struct nfs_seqid *      seqid;
 347 };
 348
 349 /*
 350  * Arguments to the close call.
 351  */
 352 struct nfs_closeargs {
 353         struct nfs_fh *         fh;
 354         nfs4_stateid *          stateid;
 355         struct nfs_seqid *      seqid;
 356         fmode_t                 fmode;
 357         const u32 *             bitmask;
 358         struct nfs4_sequence_args       seq_args;
 359 };
 360
 361 struct nfs_closeres {
 362         nfs4_stateid            stateid;
 363         struct nfs_fattr *      fattr;
 364         struct nfs_seqid *      seqid;
 365         const struct nfs_server *server;
 366         struct nfs4_sequence_res        seq_res;
 367 };
 368 /*
 369  *  * Arguments to the lock,lockt, and locku call.
 370  *   */
 371 struct nfs_lowner {
 372         __u64                   clientid;
 373         __u64                   id;
 374         dev_t                   s_dev;
 375 };
 376
 377 struct nfs_lock_args {
 378         struct nfs_fh *         fh;
 379         struct file_lock *      fl;
 380         struct nfs_seqid *      lock_seqid;
 381         nfs4_stateid *          lock_stateid;
 382         struct nfs_seqid *      open_seqid;
 383         nfs4_stateid *          open_stateid;
 384         struct nfs_lowner       lock_owner;
 385         unsigned char           block : 1;
 386         unsigned char           reclaim : 1;
 387         unsigned char           new_lock_owner : 1;
 388         struct nfs4_sequence_args       seq_args;
 389 };
 390
 391 struct nfs_lock_res {
 392         nfs4_stateid            stateid;
 393         struct nfs_seqid *      lock_seqid;
 394         struct nfs_seqid *      open_seqid;
 395         struct nfs4_sequence_res        seq_res;
 396 };
 397
 398 struct nfs_locku_args {
 399         struct nfs_fh *         fh;
 400         struct file_lock *      fl;
 401         struct nfs_seqid *      seqid;
 402         nfs4_stateid *          stateid;
 403         struct nfs4_sequence_args       seq_args;
 404 };
 405
 406 struct nfs_locku_res {
 407         nfs4_stateid            stateid;
 408         struct nfs_seqid *      seqid;
 409         struct nfs4_sequence_res        seq_res;
 410 };
 411
 412 struct nfs_lockt_args {
 413         struct nfs_fh *         fh;
 414         struct file_lock *      fl;
 415         struct nfs_lowner       lock_owner;
 416         struct nfs4_sequence_args       seq_args;
 417 };
 418
 419 struct nfs_lockt_res {
 420         struct file_lock *      denied; /* LOCK, LOCKT failed */
 421         struct nfs4_sequence_res        seq_res;
 422 };
 423
 424 struct nfs_release_lockowner_args {
 425         struct nfs_lowner       lock_owner;
 426 };
 427
 428 struct nfs4_delegreturnargs {
 429         const struct nfs_fh *fhandle;
 430         const nfs4_stateid *stateid;
 431         const u32 * bitmask;
 432         struct nfs4_sequence_args       seq_args;
 433 };
 434
 435 struct nfs4_delegreturnres {
 436         struct nfs_fattr * fattr;
 437         const struct nfs_server *server;
 438         struct nfs4_sequence_res        seq_res;
 439 };
 440
 441 /*
 442  * Arguments to the read call.
 443  */
 444 struct nfs_readargs {
 445         struct nfs_fh *         fh;
 446         struct nfs_open_context *context;
 447         struct nfs_lock_context *lock_context;
 448         __u64                   offset;
 449         __u32                   count;
 450         unsigned int            pgbase;
 451         struct page **          pages;
 452         struct nfs4_sequence_args       seq_args;
 453 };
 454
 455 struct nfs_readres {
 456         struct nfs_fattr *      fattr;
 457         __u32                   count;
 458         int                     eof;
 459         struct nfs4_sequence_res        seq_res;
 460 };
 461
 462 /*
 463  * Arguments to the write call.
 464  */
 465 struct nfs_writeargs {
 466         struct nfs_fh *         fh;
 467         struct nfs_open_context *context;
 468         struct nfs_lock_context *lock_context;
 469         __u64                   offset;
 470         __u32                   count;
 471         enum nfs3_stable_how    stable;
 472         unsigned int            pgbase;
 473         struct page **          pages;
 474         const u32 *             bitmask;
 475         struct nfs4_sequence_args       seq_args;
 476 };
 477
 478 struct nfs_writeverf {
 479         enum nfs3_stable_how    committed;
 480         __be32                  verifier[2];
 481 };
 482
 483 struct nfs_writeres {
 484         struct nfs_fattr *      fattr;
 485         struct nfs_writeverf *  verf;
 486         __u32                   count;
 487         const struct nfs_server *server;
 488         struct nfs4_sequence_res        seq_res;
 489 };
 490
 491 /*
 492  * Common arguments to the unlink call
 493  */
 494 struct nfs_removeargs {
 495         const struct nfs_fh     *fh;
 496         struct qstr             name;
 497         const u32 *             bitmask;
 498         struct nfs4_sequence_args       seq_args;
 499 };
 500
 501 struct nfs_removeres {
 502         const struct nfs_server *server;
 503         struct nfs_fattr        *dir_attr;
 504         struct nfs4_change_info cinfo;
 505         struct nfs4_sequence_res        seq_res;
 506 };
 507
 508 /*
 509  * Common arguments to the rename call
 510  */
 511 struct nfs_renameargs {
 512         const struct nfs_fh             *old_dir;
 513         const struct nfs_fh             *new_dir;
 514         const struct qstr               *old_name;
 515         const struct qstr               *new_name;
 516         const u32                       *bitmask;
 517         struct nfs4_sequence_args       seq_args;
 518 };
 519
 520 struct nfs_renameres {
 521         const struct nfs_server         *server;
 522         struct nfs4_change_info         old_cinfo;
 523         struct nfs_fattr                *old_fattr;
 524         struct nfs4_change_info         new_cinfo;
 525         struct nfs_fattr                *new_fattr;
 526         struct nfs4_sequence_res        seq_res;
 527 };
 528
 529 /*
 530  * Argument struct for decode_entry function
 531  */
 532 struct nfs_entry {
 533         __u64                   ino;
 534         __u64                   cookie,
 535                                 prev_cookie;
 536         const char *            name;
 537         unsigned int            len;
 538         int                     eof;
 539         struct nfs_fh *         fh;
 540         struct nfs_fattr *      fattr;
 541         unsigned char           d_type;
 542         struct nfs_server *     server;
 543 };
 544
 545 /*
 546  * The following types are for NFSv2 only.
 547  */
 548 struct nfs_sattrargs {
 549         struct nfs_fh *         fh;
 550         struct iattr *          sattr;
 551 };
 552
 553 struct nfs_diropargs {
 554         struct nfs_fh *         fh;
 555         const char *            name;
 556         unsigned int            len;
 557 };
 558
 559 struct nfs_createargs {
 560         struct nfs_fh *         fh;
 561         const char *            name;
 562         unsigned int            len;
 563         struct iattr *          sattr;
 564 };
 565
 566 struct nfs_setattrargs {
 567         struct nfs_fh *                 fh;
 568         nfs4_stateid                    stateid;
 569         struct iattr *                  iap;
 570         const struct nfs_server *       server; /* Needed for name mapping */
 571         const u32 *                     bitmask;
 572         struct nfs4_sequence_args       seq_args;
 573 };
 574
 575 struct nfs_setaclargs {
 576         struct nfs_fh *                 fh;
 577         size_t                          acl_len;
 578         unsigned int                    acl_pgbase;
 579         struct page **                  acl_pages;
 580         struct nfs4_sequence_args       seq_args;
 581 };
 582
 583 struct nfs_setaclres {
 584         struct nfs4_sequence_res        seq_res;
 585 };
 586
 587 struct nfs_getaclargs {
 588         struct nfs_fh *                 fh;
 589         size_t                          acl_len;
 590         unsigned int                    acl_pgbase;
 591         struct page **                  acl_pages;
 592         struct nfs4_sequence_args       seq_args;
 593 };
 594
 595 struct nfs_getaclres {
 596         size_t                          acl_len;
 597         struct nfs4_sequence_res        seq_res;
 598 };
 599
 600 struct nfs_setattrres {
 601         struct nfs_fattr *              fattr;
 602         const struct nfs_server *       server;
 603         struct nfs4_sequence_res        seq_res;
 604 };
 605
 606 struct nfs_linkargs {
 607         struct nfs_fh *         fromfh;
 608         struct nfs_fh *         tofh;
 609         const char *            toname;
 610         unsigned int            tolen;
 611 };
 612
 613 struct nfs_symlinkargs {
 614         struct nfs_fh *         fromfh;
 615         const char *            fromname;
 616         unsigned int            fromlen;
 617         struct page **          pages;
 618         unsigned int            pathlen;
 619         struct iattr *          sattr;
 620 };
 621
 622 struct nfs_readdirargs {
 623         struct nfs_fh *         fh;
 624         __u32                   cookie;
 625         unsigned int            count;
 626         struct page **          pages;
 627 };
 628
 629 struct nfs3_getaclargs {
 630         struct nfs_fh *         fh;
 631         int                     mask;
 632         struct page **          pages;
 633 };
 634
 635 struct nfs3_setaclargs {
 636         struct inode *          inode;
 637         int                     mask;
 638         struct posix_acl *      acl_access;
 639         struct posix_acl *      acl_default;
 640         size_t                  len;
 641         unsigned int            npages;
 642         struct page **          pages;
 643 };
 644
 645 struct nfs_diropok {
 646         struct nfs_fh *         fh;
 647         struct nfs_fattr *      fattr;
 648 };
 649
 650 struct nfs_readlinkargs {
 651         struct nfs_fh *         fh;
 652         unsigned int            pgbase;
 653         unsigned int            pglen;
 654         struct page **          pages;
 655 };
 656
 657 struct nfs3_sattrargs {
 658         struct nfs_fh *         fh;
 659         struct iattr *          sattr;
 660         unsigned int            guard;
 661         struct timespec         guardtime;
 662 };
 663
 664 struct nfs3_diropargs {
 665         struct nfs_fh *         fh;
 666         const char *            name;
 667         unsigned int            len;
 668 };
 669
 670 struct nfs3_accessargs {
 671         struct nfs_fh *         fh;
 672         __u32                   access;
 673 };
 674
 675 struct nfs3_createargs {
 676         struct nfs_fh *         fh;
 677         const char *            name;
 678         unsigned int            len;
 679         struct iattr *          sattr;
 680         enum nfs3_createmode    createmode;
 681         __be32                  verifier[2];
 682 };
 683
 684 struct nfs3_mkdirargs {
 685         struct nfs_fh *         fh;
 686         const char *            name;
 687         unsigned int            len;
 688         struct iattr *          sattr;
 689 };
 690
 691 struct nfs3_symlinkargs {
 692         struct nfs_fh *         fromfh;
 693         const char *            fromname;
 694         unsigned int            fromlen;
 695         struct page **          pages;
 696         unsigned int            pathlen;
 697         struct iattr *          sattr;
 698 };
 699
 700 struct nfs3_mknodargs {
 701         struct nfs_fh *         fh;
 702         const char *            name;
 703         unsigned int            len;
 704         enum nfs3_ftype         type;
 705         struct iattr *          sattr;
 706         dev_t                   rdev;
 707 };
 708
 709 struct nfs3_linkargs {
 710         struct nfs_fh *         fromfh;
 711         struct nfs_fh *         tofh;
 712         const char *            toname;
 713         unsigned int            tolen;
 714 };
 715
 716 struct nfs3_readdirargs {
 717         struct nfs_fh *         fh;
 718         __u64                   cookie;
 719         __be32                  verf[2];
 720         int                     plus;
 721         unsigned int            count;
 722         struct page **          pages;
 723 };
 724
 725 struct nfs3_diropres {
 726         struct nfs_fattr *      dir_attr;
 727         struct nfs_fh *         fh;
 728         struct nfs_fattr *      fattr;
 729 };
 730
 731 struct nfs3_accessres {
 732         struct nfs_fattr *      fattr;
 733         __u32                   access;
 734 };
 735
 736 struct nfs3_readlinkargs {
 737         struct nfs_fh *         fh;
 738         unsigned int            pgbase;
 739         unsigned int            pglen;
 740         struct page **          pages;
 741 };
 742
 743 struct nfs3_linkres {
 744         struct nfs_fattr *      dir_attr;
 745         struct nfs_fattr *      fattr;
 746 };
 747
 748 struct nfs3_readdirres {
 749         struct nfs_fattr *      dir_attr;
 750         __be32 *                verf;
 751         int                     plus;
 752 };
 753
 754 struct nfs3_getaclres {
 755         struct nfs_fattr *      fattr;
 756         int                     mask;
 757         unsigned int            acl_access_count;
 758         unsigned int            acl_default_count;
 759         struct posix_acl *      acl_access;
 760         struct posix_acl *      acl_default;
 761 };
 762
 763 #ifdef CONFIG_NFS_V4
 764
 765 typedef u64 clientid4;
 766
 767 struct nfs4_accessargs {
 768         const struct nfs_fh *           fh;
 769         const u32 *                     bitmask;
 770         u32                             access;
 771         struct nfs4_sequence_args       seq_args;
 772 };
 773
 774 struct nfs4_accessres {
 775         const struct nfs_server *       server;
 776         struct nfs_fattr *              fattr;
 777         u32                             supported;
 778         u32                             access;
 779         struct nfs4_sequence_res        seq_res;
 780 };
 781
 782 struct nfs4_create_arg {
 783         u32                             ftype;
 784         union {
 785                 struct {
 786                         struct page **  pages;
 787                         unsigned int    len;
 788                 } symlink;   /* NF4LNK */
 789                 struct {
 790                         u32             specdata1;
 791                         u32             specdata2;
 792                 } device;    /* NF4BLK, NF4CHR */
 793         } u;
 794         const struct qstr *             name;
 795         const struct nfs_server *       server;
 796         const struct iattr *            attrs;
 797         const struct nfs_fh *           dir_fh;
 798         const u32 *                     bitmask;
 799         struct nfs4_sequence_args       seq_args;
 800 };
 801
 802 struct nfs4_create_res {
 803         const struct nfs_server *       server;
 804         struct nfs_fh *                 fh;
 805         struct nfs_fattr *              fattr;
 806         struct nfs4_change_info         dir_cinfo;
 807         struct nfs_fattr *              dir_fattr;
 808         struct nfs4_sequence_res        seq_res;
 809 };
 810
 811 struct nfs4_fsinfo_arg {
 812         const struct nfs_fh *           fh;
 813         const u32 *                     bitmask;
 814         struct nfs4_sequence_args       seq_args;
 815 };
 816
 817 struct nfs4_fsinfo_res {
 818         struct nfs_fsinfo              *fsinfo;
 819         struct nfs4_sequence_res        seq_res;
 820 };
 821
 822 struct nfs4_getattr_arg {
 823         const struct nfs_fh *           fh;
 824         const u32 *                     bitmask;
 825         struct nfs4_sequence_args       seq_args;
 826 };
 827
 828 struct nfs4_getattr_res {
 829         const struct nfs_server *       server;
 830         struct nfs_fattr *              fattr;
 831         struct nfs4_sequence_res        seq_res;
 832 };
 833
 834 struct nfs4_link_arg {
 835         const struct nfs_fh *           fh;
 836         const struct nfs_fh *           dir_fh;
 837         const struct qstr *             name;
 838         const u32 *                     bitmask;
 839         struct nfs4_sequence_args       seq_args;
 840 };
 841
 842 struct nfs4_link_res {
 843         const struct nfs_server *       server;
 844         struct nfs_fattr *              fattr;
 845         struct nfs4_change_info         cinfo;
 846         struct nfs_fattr *              dir_attr;
 847         struct nfs4_sequence_res        seq_res;
 848 };
 849
 850
 851 struct nfs4_lookup_arg {
 852         const struct nfs_fh *           dir_fh;
 853         const struct qstr *             name;
 854         const u32 *                     bitmask;
 855         struct nfs4_sequence_args       seq_args;
 856 };
 857
 858 struct nfs4_lookup_res {
 859         const struct nfs_server *       server;
 860         struct nfs_fattr *              fattr;
 861         struct nfs_fh *                 fh;
 862         struct nfs4_sequence_res        seq_res;
 863 };
 864
 865 struct nfs4_lookup_root_arg {
 866         const u32 *                     bitmask;
 867         struct nfs4_sequence_args       seq_args;
 868 };
 869
 870 struct nfs4_pathconf_arg {
 871         const struct nfs_fh *           fh;
 872         const u32 *                     bitmask;
 873         struct nfs4_sequence_args       seq_args;
 874 };
 875
 876 struct nfs4_pathconf_res {
 877         struct nfs_pathconf            *pathconf;
 878         struct nfs4_sequence_res        seq_res;
 879 };
 880
 881 struct nfs4_readdir_arg {
 882         const struct nfs_fh *           fh;
 883         u64                             cookie;
 884         nfs4_verifier                   verifier;
 885         u32                             count;
 886         struct page **                  pages;  /* zero-copy data */
 887         unsigned int                    pgbase; /* zero-copy data */
 888         const u32 *                     bitmask;
 889         int                             plus;
 890         struct nfs4_sequence_args       seq_args;
 891 };
 892
 893 struct nfs4_readdir_res {
 894         nfs4_verifier                   verifier;
 895         unsigned int                    pgbase;
 896         struct nfs4_sequence_res        seq_res;
 897 };
 898
 899 struct nfs4_readlink {
 900         const struct nfs_fh *           fh;
 901         unsigned int                    pgbase;
 902         unsigned int                    pglen;   /* zero-copy data */
 903         struct page **                  pages;   /* zero-copy data */
 904         struct nfs4_sequence_args       seq_args;
 905 };
 906
 907 struct nfs4_readlink_res {
 908         struct nfs4_sequence_res        seq_res;
 909 };
 910
 911 #define NFS4_SETCLIENTID_NAMELEN        (127)
 912 struct nfs4_setclientid {
 913         const nfs4_verifier *           sc_verifier;
 914         unsigned int                    sc_name_len;
 915         char                            sc_name[NFS4_SETCLIENTID_NAMELEN + 1];
 916         u32                             sc_prog;
 917         unsigned int                    sc_netid_len;
 918         char                            sc_netid[RPCBIND_MAXNETIDLEN + 1];
 919         unsigned int                    sc_uaddr_len;
 920         char                            sc_uaddr[RPCBIND_MAXUADDRLEN + 1];
 921         u32                             sc_cb_ident;
 922 };
 923
 924 struct nfs4_setclientid_res {
 925         u64                             clientid;
 926         nfs4_verifier                   confirm;
 927 };
 928
 929 struct nfs4_statfs_arg {
 930         const struct nfs_fh *           fh;
 931         const u32 *                     bitmask;
 932         struct nfs4_sequence_args       seq_args;
 933 };
 934
 935 struct nfs4_statfs_res {
 936         struct nfs_fsstat              *fsstat;
 937         struct nfs4_sequence_res        seq_res;
 938 };
 939
 940 struct nfs4_server_caps_arg {
 941         struct nfs_fh                  *fhandle;
 942         struct nfs4_sequence_args       seq_args;
 943 };
 944
 945 struct nfs4_server_caps_res {
 946         u32                             attr_bitmask[2];
 947         u32                             acl_bitmask;
 948         u32                             has_links;
 949         u32                             has_symlinks;
 950         struct nfs4_sequence_res        seq_res;
 951 };
 952
 953 struct nfs4_string {
 954         unsigned int len;
 955         char *data;
 956 };
 957
 958 #define NFS4_PATHNAME_MAXCOMPONENTS 512
 959 struct nfs4_pathname {
 960         unsigned int ncomponents;
 961         struct nfs4_string components[NFS4_PATHNAME_MAXCOMPONENTS];
 962 };
 963
 964 #define NFS4_FS_LOCATION_MAXSERVERS 10
 965 struct nfs4_fs_location {
 966         unsigned int nservers;
 967         struct nfs4_string servers[NFS4_FS_LOCATION_MAXSERVERS];
 968         struct nfs4_pathname rootpath;
 969 };
 970
 971 #define NFS4_FS_LOCATIONS_MAXENTRIES 10
 972 struct nfs4_fs_locations {
 973         struct nfs_fattr fattr;
 974         const struct nfs_server *server;
 975         struct nfs4_pathname fs_path;
 976         int nlocations;
 977         struct nfs4_fs_location locations[NFS4_FS_LOCATIONS_MAXENTRIES];
 978 };
 979
 980 struct nfs4_fs_locations_arg {
 981         const struct nfs_fh *dir_fh;
 982         const struct qstr *name;
 983         struct page *page;
 984         const u32 *bitmask;
 985         struct nfs4_sequence_args       seq_args;
 986 };
 987
 988 struct nfs4_fs_locations_res {
 989         struct nfs4_fs_locations       *fs_locations;
 990         struct nfs4_sequence_res        seq_res;
 991 };
 992
 993 struct nfs4_secinfo_oid {
 994         unsigned int len;
 995         char data[GSS_OID_MAX_LEN];
 996 };
 997
 998 struct nfs4_secinfo_gss {
 999         struct nfs4_secinfo_oid sec_oid4;
1000         unsigned int qop4;
1001         unsigned int service;
1002 };
1003
1004 struct nfs4_secinfo_flavor {
1005         unsigned int            flavor;
1006         struct nfs4_secinfo_gss gss;
1007 };
1008
1009 struct nfs4_secinfo_flavors {
1010         unsigned int num_flavors;
1011         struct nfs4_secinfo_flavor flavors[0];
1012 };
1013
1014 struct nfs4_secinfo_arg {
1015         const struct nfs_fh             *dir_fh;
1016         const struct qstr               *name;
1017         struct nfs4_sequence_args       seq_args;
1018 };
1019
1020 struct nfs4_secinfo_res {
1021         struct nfs4_secinfo_flavors     *flavors;
1022         struct nfs4_sequence_res        seq_res;
1023 };
1024
1025 #endif /* CONFIG_NFS_V4 */
1026
1027 struct nfstime4 {
1028         u64     seconds;
1029         u32     nseconds;
1030 };
1031
1032 #ifdef CONFIG_NFS_V4_1
1033 struct nfs_impl_id4 {
1034         u32             domain_len;
1035         char            *domain;
1036         u32             name_len;
1037         char            *name;
1038         struct nfstime4 date;
1039 };
1040
1041 #define NFS4_EXCHANGE_ID_LEN    (48)
1042 struct nfs41_exchange_id_args {
1043         struct nfs_client               *client;
1044         nfs4_verifier                   *verifier;
1045         unsigned int                    id_len;
1046         char                            id[NFS4_EXCHANGE_ID_LEN];
1047         u32                             flags;
1048 };
1049
1050 struct server_owner {
1051         uint64_t                        minor_id;
1052         uint32_t                        major_id_sz;
1053         char                            major_id[NFS4_OPAQUE_LIMIT];
1054 };
1055
1056 struct server_scope {
1057         uint32_t                        server_scope_sz;
1058         char                            server_scope[NFS4_OPAQUE_LIMIT];
1059 };
1060
1061 struct nfs41_exchange_id_res {
1062         struct nfs_client               *client;
1063         u32                             flags;
1064 };
1065
1066 struct nfs41_create_session_args {
1067         struct nfs_client              *client;
1068         uint32_t                        flags;
1069         uint32_t                        cb_program;
1070         struct nfs4_channel_attrs       fc_attrs;       /* Fore Channel */
1071         struct nfs4_channel_attrs       bc_attrs;       /* Back Channel */
1072 };
1073
1074 struct nfs41_create_session_res {
1075         struct nfs_client              *client;
1076 };
1077
1078 struct nfs41_reclaim_complete_args {
1079         /* In the future extend to include curr_fh for use with migration */
1080         unsigned char                   one_fs:1;
1081         struct nfs4_sequence_args       seq_args;
1082 };
1083
1084 struct nfs41_reclaim_complete_res {
1085         struct nfs4_sequence_res        seq_res;
1086 };
1087 #endif /* CONFIG_NFS_V4_1 */
1088
1089 struct nfs_page;
1090
1091 #define NFS_PAGEVEC_SIZE        (8U)
1092
1093 struct nfs_read_data {
1094         int                     flags;
1095         struct rpc_task         task;
1096         struct inode            *inode;
1097         struct rpc_cred         *cred;
1098         struct nfs_fattr        fattr;  /* fattr storage */
1099         struct list_head        pages;  /* Coalesced read requests */
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_readargs args;
1104         struct nfs_readres  res;
1105         unsigned long           timestamp;      /* For lease renewal */
1106         struct pnfs_layout_segment *lseg;
1107         struct nfs_client       *ds_clp;        /* pNFS data server */
1108         const struct rpc_call_ops *mds_ops;
1109         int (*read_done_cb) (struct rpc_task *task, struct nfs_read_data *data);
1110         __u64                   mds_offset;
1111         int                     pnfs_error;
1112         struct page             *page_array[NFS_PAGEVEC_SIZE];
1113 };
1114
1115 struct nfs_write_data {
1116         int                     flags;
1117         struct rpc_task         task;
1118         struct inode            *inode;
1119         struct rpc_cred         *cred;
1120         struct nfs_fattr        fattr;
1121         struct nfs_writeverf    verf;
1122         struct list_head        pages;          /* Coalesced requests we wish to flush */
1123         struct nfs_page         *req;           /* multi ops per nfs_page */
1124         struct page             **pagevec;
1125         unsigned int            npages;         /* Max length of pagevec */
1126         struct nfs_writeargs    args;           /* argument struct */
1127         struct nfs_writeres     res;            /* result struct */
1128         struct pnfs_layout_segment *lseg;
1129         struct nfs_client       *ds_clp;        /* pNFS data server */
1130         int                     ds_commit_index;
1131         const struct rpc_call_ops *mds_ops;
1132         int (*write_done_cb) (struct rpc_task *task, struct nfs_write_data *data);
1133 #ifdef CONFIG_NFS_V4
1134         unsigned long           timestamp;      /* For lease renewal */
1135 #endif
1136         __u64                   mds_offset;     /* Filelayout dense stripe */
1137         int                     pnfs_error;
1138         struct page             *page_array[NFS_PAGEVEC_SIZE];
1139 };
1140
1141 struct nfs_access_entry;
1142 struct nfs_client;
1143 struct rpc_timeout;
1144
1145 /*
1146  * RPC procedure vector for NFSv2/NFSv3 demuxing
1147  */
1148 struct nfs_rpc_ops {
1149         u32     version;                /* Protocol version */
1150         const struct dentry_operations *dentry_ops;
1151         const struct inode_operations *dir_inode_ops;
1152         const struct inode_operations *file_inode_ops;
1153
1154         int     (*getroot) (struct nfs_server *, struct nfs_fh *,
1155                             struct nfs_fsinfo *);
1156         int     (*lookupfh)(struct nfs_server *, struct nfs_fh *,
1157                             struct qstr *, struct nfs_fh *,
1158                             struct nfs_fattr *);
1159         int     (*getattr) (struct nfs_server *, struct nfs_fh *,
1160                             struct nfs_fattr *);
1161         int     (*setattr) (struct dentry *, struct nfs_fattr *,
1162                             struct iattr *);
1163         int     (*lookup)  (struct rpc_clnt *clnt, struct inode *, struct qstr *,
1164                             struct nfs_fh *, struct nfs_fattr *);
1165         int     (*access)  (struct inode *, struct nfs_access_entry *);
1166         int     (*readlink)(struct inode *, struct page *, unsigned int,
1167                             unsigned int);
1168         int     (*create)  (struct inode *, struct dentry *,
1169                             struct iattr *, int, struct nfs_open_context *);
1170         int     (*remove)  (struct inode *, struct qstr *);
1171         void    (*unlink_setup)  (struct rpc_message *, struct inode *dir);
1172         int     (*unlink_done) (struct rpc_task *, struct inode *);
1173         int     (*rename)  (struct inode *, struct qstr *,
1174                             struct inode *, struct qstr *);
1175         void    (*rename_setup)  (struct rpc_message *msg, struct inode *dir);
1176         int     (*rename_done) (struct rpc_task *task, struct inode *old_dir, struct inode *new_dir);
1177         int     (*link)    (struct inode *, struct inode *, struct qstr *);
1178         int     (*symlink) (struct inode *, struct dentry *, struct page *,
1179                             unsigned int, struct iattr *);
1180         int     (*mkdir)   (struct inode *, struct dentry *, struct iattr *);
1181         int     (*rmdir)   (struct inode *, struct qstr *);
1182         int     (*readdir) (struct dentry *, struct rpc_cred *,
1183                             u64, struct page **, unsigned int, int);
1184         int     (*mknod)   (struct inode *, struct dentry *, struct iattr *,
1185                             dev_t);
1186         int     (*statfs)  (struct nfs_server *, struct nfs_fh *,
1187                             struct nfs_fsstat *);
1188         int     (*fsinfo)  (struct nfs_server *, struct nfs_fh *,
1189                             struct nfs_fsinfo *);
1190         int     (*pathconf) (struct nfs_server *, struct nfs_fh *,
1191                              struct nfs_pathconf *);
1192         int     (*set_capabilities)(struct nfs_server *, struct nfs_fh *);
1193         int     (*decode_dirent)(struct xdr_stream *, struct nfs_entry *, int);
1194         void    (*read_setup)   (struct nfs_read_data *, struct rpc_message *);
1195         int     (*read_done)  (struct rpc_task *, struct nfs_read_data *);
1196         void    (*write_setup)  (struct nfs_write_data *, struct rpc_message *);
1197         int     (*write_done)  (struct rpc_task *, struct nfs_write_data *);
1198         void    (*commit_setup) (struct nfs_write_data *, struct rpc_message *);
1199         int     (*commit_done) (struct rpc_task *, struct nfs_write_data *);
1200         int     (*lock)(struct file *, int, struct file_lock *);
1201         int     (*lock_check_bounds)(const struct file_lock *);
1202         void    (*clear_acl_cache)(struct inode *);
1203         void    (*close_context)(struct nfs_open_context *ctx, int);
1204         struct inode * (*open_context) (struct inode *dir,
1205                                 struct nfs_open_context *ctx,
1206                                 int open_flags,
1207                                 struct iattr *iattr);
1208         int     (*init_client) (struct nfs_client *, const struct rpc_timeout *,
1209                                 const char *, rpc_authflavor_t, int);
1210         int     (*secinfo)(struct inode *, const struct qstr *, struct nfs4_secinfo_flavors *);
1211 };
1212
1213 /*
1214  *      NFS_CALL(getattr, inode, (fattr));
1215  * into
1216  *      NFS_PROTO(inode)->getattr(fattr);
1217  */
1218 #define NFS_CALL(op, inode, args)       NFS_PROTO(inode)->op args
1219
1220 /*
1221  * Function vectors etc. for the NFS client
1222  */
1223 extern const struct nfs_rpc_ops nfs_v2_clientops;
1224 extern const struct nfs_rpc_ops nfs_v3_clientops;
1225 extern const struct nfs_rpc_ops nfs_v4_clientops;
1226 extern struct rpc_version       nfs_version2;
1227 extern struct rpc_version       nfs_version3;
1228 extern struct rpc_version       nfs_version4;
1229
1230 extern struct rpc_version       nfsacl_version3;
1231 extern struct rpc_program       nfsacl_program;
1232
1233 #endif