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         __u32                   blksize; /* preferred pnfs io block size */
 126 };
 127
 128 struct nfs_fsstat {
 129         struct nfs_fattr        *fattr; /* Post-op attributes */
 130         __u64                   tbytes; /* total size in bytes */
 131         __u64                   fbytes; /* # of free bytes */
 132         __u64                   abytes; /* # of bytes available to user */
 133         __u64                   tfiles; /* # of files */
 134         __u64                   ffiles; /* # of free files */
 135         __u64                   afiles; /* # of files available to user */
 136 };
 137
 138 struct nfs2_fsstat {
 139         __u32                   tsize;  /* Server transfer size */
 140         __u32                   bsize;  /* Filesystem block size */
 141         __u32                   blocks; /* No. of "bsize" blocks on filesystem */
 142         __u32                   bfree;  /* No. of free "bsize" blocks */
 143         __u32                   bavail; /* No. of available "bsize" blocks */
 144 };
 145
 146 struct nfs_pathconf {
 147         struct nfs_fattr        *fattr; /* Post-op attributes */
 148         __u32                   max_link; /* max # of hard links */
 149         __u32                   max_namelen; /* max name length */
 150 };
 151
 152 struct nfs4_change_info {
 153         u32                     atomic;
 154         u64                     before;
 155         u64                     after;
 156 };
 157
 158 struct nfs_seqid;
 159
 160 /* nfs41 sessions channel attributes */
 161 struct nfs4_channel_attrs {
 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_getdevicelist_args {
 240         const struct nfs_fh *fh;
 241         u32 layoutclass;
 242         struct nfs4_sequence_args seq_args;
 243 };
 244
 245 struct nfs4_getdevicelist_res {
 246         struct pnfs_devicelist *devlist;
 247         struct nfs4_sequence_res seq_res;
 248 };
 249
 250 struct nfs4_getdeviceinfo_args {
 251         struct pnfs_device *pdev;
 252         struct nfs4_sequence_args seq_args;
 253 };
 254
 255 struct nfs4_getdeviceinfo_res {
 256         struct pnfs_device *pdev;
 257         struct nfs4_sequence_res seq_res;
 258 };
 259
 260 struct nfs4_layoutcommit_args {
 261         nfs4_stateid stateid;
 262         __u64 lastbytewritten;
 263         struct inode *inode;
 264         const u32 *bitmask;
 265         struct nfs4_sequence_args seq_args;
 266 };
 267
 268 struct nfs4_layoutcommit_res {
 269         struct nfs_fattr *fattr;
 270         const struct nfs_server *server;
 271         struct nfs4_sequence_res seq_res;
 272         int status;
 273 };
 274
 275 struct nfs4_layoutcommit_data {
 276         struct rpc_task task;
 277         struct nfs_fattr fattr;
 278         struct list_head lseg_list;
 279         struct rpc_cred *cred;
 280         struct nfs4_layoutcommit_args args;
 281         struct nfs4_layoutcommit_res res;
 282 };
 283
 284 struct nfs4_layoutreturn_args {
 285         struct pnfs_layout_hdr *layout;
 286         struct inode *inode;
 287         nfs4_stateid stateid;
 288         __u32   layout_type;
 289         struct nfs4_sequence_args seq_args;
 290 };
 291
 292 struct nfs4_layoutreturn_res {
 293         struct nfs4_sequence_res seq_res;
 294         u32 lrs_present;
 295         nfs4_stateid stateid;
 296 };
 297
 298 struct nfs4_layoutreturn {
 299         struct nfs4_layoutreturn_args args;
 300         struct nfs4_layoutreturn_res res;
 301         struct rpc_cred *cred;
 302         struct nfs_client *clp;
 303         int rpc_status;
 304 };
 305
 306 /*
 307  * Arguments to the open call.
 308  */
 309 struct nfs_openargs {
 310         const struct nfs_fh *   fh;
 311         struct nfs_seqid *      seqid;
 312         int                     open_flags;
 313         fmode_t                 fmode;
 314         __u64                   clientid;
 315         __u64                   id;
 316         union {
 317                 struct {
 318                         struct iattr *  attrs;    /* UNCHECKED, GUARDED */
 319                         nfs4_verifier   verifier; /* EXCLUSIVE */
 320                 };
 321                 nfs4_stateid    delegation;             /* CLAIM_DELEGATE_CUR */
 322                 fmode_t         delegation_type;        /* CLAIM_PREVIOUS */
 323         } u;
 324         const struct qstr *     name;
 325         const struct nfs_server *server;         /* Needed for ID mapping */
 326         const u32 *             bitmask;
 327         __u32                   claim;
 328         struct nfs4_sequence_args       seq_args;
 329 };
 330
 331 struct nfs_openres {
 332         nfs4_stateid            stateid;
 333         struct nfs_fh           fh;
 334         struct nfs4_change_info cinfo;
 335         __u32                   rflags;
 336         struct nfs_fattr *      f_attr;
 337         struct nfs_fattr *      dir_attr;
 338         struct nfs_seqid *      seqid;
 339         const struct nfs_server *server;
 340         fmode_t                 delegation_type;
 341         nfs4_stateid            delegation;
 342         __u32                   do_recall;
 343         __u64                   maxsize;
 344         __u32                   attrset[NFS4_BITMAP_SIZE];
 345         struct nfs4_sequence_res        seq_res;
 346 };
 347
 348 /*
 349  * Arguments to the open_confirm call.
 350  */
 351 struct nfs_open_confirmargs {
 352         const struct nfs_fh *   fh;
 353         nfs4_stateid *          stateid;
 354         struct nfs_seqid *      seqid;
 355 };
 356
 357 struct nfs_open_confirmres {
 358         nfs4_stateid            stateid;
 359         struct nfs_seqid *      seqid;
 360 };
 361
 362 /*
 363  * Arguments to the close call.
 364  */
 365 struct nfs_closeargs {
 366         struct nfs_fh *         fh;
 367         nfs4_stateid *          stateid;
 368         struct nfs_seqid *      seqid;
 369         fmode_t                 fmode;
 370         const u32 *             bitmask;
 371         struct nfs4_sequence_args       seq_args;
 372 };
 373
 374 struct nfs_closeres {
 375         nfs4_stateid            stateid;
 376         struct nfs_fattr *      fattr;
 377         struct nfs_seqid *      seqid;
 378         const struct nfs_server *server;
 379         struct nfs4_sequence_res        seq_res;
 380 };
 381 /*
 382  *  * Arguments to the lock,lockt, and locku call.
 383  *   */
 384 struct nfs_lowner {
 385         __u64                   clientid;
 386         __u64                   id;
 387         dev_t                   s_dev;
 388 };
 389
 390 struct nfs_lock_args {
 391         struct nfs_fh *         fh;
 392         struct file_lock *      fl;
 393         struct nfs_seqid *      lock_seqid;
 394         nfs4_stateid *          lock_stateid;
 395         struct nfs_seqid *      open_seqid;
 396         nfs4_stateid *          open_stateid;
 397         struct nfs_lowner       lock_owner;
 398         unsigned char           block : 1;
 399         unsigned char           reclaim : 1;
 400         unsigned char           new_lock_owner : 1;
 401         struct nfs4_sequence_args       seq_args;
 402 };
 403
 404 struct nfs_lock_res {
 405         nfs4_stateid            stateid;
 406         struct nfs_seqid *      lock_seqid;
 407         struct nfs_seqid *      open_seqid;
 408         struct nfs4_sequence_res        seq_res;
 409 };
 410
 411 struct nfs_locku_args {
 412         struct nfs_fh *         fh;
 413         struct file_lock *      fl;
 414         struct nfs_seqid *      seqid;
 415         nfs4_stateid *          stateid;
 416         struct nfs4_sequence_args       seq_args;
 417 };
 418
 419 struct nfs_locku_res {
 420         nfs4_stateid            stateid;
 421         struct nfs_seqid *      seqid;
 422         struct nfs4_sequence_res        seq_res;
 423 };
 424
 425 struct nfs_lockt_args {
 426         struct nfs_fh *         fh;
 427         struct file_lock *      fl;
 428         struct nfs_lowner       lock_owner;
 429         struct nfs4_sequence_args       seq_args;
 430 };
 431
 432 struct nfs_lockt_res {
 433         struct file_lock *      denied; /* LOCK, LOCKT failed */
 434         struct nfs4_sequence_res        seq_res;
 435 };
 436
 437 struct nfs_release_lockowner_args {
 438         struct nfs_lowner       lock_owner;
 439 };
 440
 441 struct nfs4_delegreturnargs {
 442         const struct nfs_fh *fhandle;
 443         const nfs4_stateid *stateid;
 444         const u32 * bitmask;
 445         struct nfs4_sequence_args       seq_args;
 446 };
 447
 448 struct nfs4_delegreturnres {
 449         struct nfs_fattr * fattr;
 450         const struct nfs_server *server;
 451         struct nfs4_sequence_res        seq_res;
 452 };
 453
 454 /*
 455  * Arguments to the read call.
 456  */
 457 struct nfs_readargs {
 458         struct nfs_fh *         fh;
 459         struct nfs_open_context *context;
 460         struct nfs_lock_context *lock_context;
 461         __u64                   offset;
 462         __u32                   count;
 463         unsigned int            pgbase;
 464         struct page **          pages;
 465         struct nfs4_sequence_args       seq_args;
 466 };
 467
 468 struct nfs_readres {
 469         struct nfs_fattr *      fattr;
 470         __u32                   count;
 471         int                     eof;
 472         struct nfs4_sequence_res        seq_res;
 473 };
 474
 475 /*
 476  * Arguments to the write call.
 477  */
 478 struct nfs_writeargs {
 479         struct nfs_fh *         fh;
 480         struct nfs_open_context *context;
 481         struct nfs_lock_context *lock_context;
 482         __u64                   offset;
 483         __u32                   count;
 484         enum nfs3_stable_how    stable;
 485         unsigned int            pgbase;
 486         struct page **          pages;
 487         const u32 *             bitmask;
 488         struct nfs4_sequence_args       seq_args;
 489 };
 490
 491 struct nfs_writeverf {
 492         enum nfs3_stable_how    committed;
 493         __be32                  verifier[2];
 494 };
 495
 496 struct nfs_writeres {
 497         struct nfs_fattr *      fattr;
 498         struct nfs_writeverf *  verf;
 499         __u32                   count;
 500         const struct nfs_server *server;
 501         struct nfs4_sequence_res        seq_res;
 502 };
 503
 504 /*
 505  * Common arguments to the unlink call
 506  */
 507 struct nfs_removeargs {
 508         const struct nfs_fh     *fh;
 509         struct qstr             name;
 510         const u32 *             bitmask;
 511         struct nfs4_sequence_args       seq_args;
 512 };
 513
 514 struct nfs_removeres {
 515         const struct nfs_server *server;
 516         struct nfs_fattr        *dir_attr;
 517         struct nfs4_change_info cinfo;
 518         struct nfs4_sequence_res        seq_res;
 519 };
 520
 521 /*
 522  * Common arguments to the rename call
 523  */
 524 struct nfs_renameargs {
 525         const struct nfs_fh             *old_dir;
 526         const struct nfs_fh             *new_dir;
 527         const struct qstr               *old_name;
 528         const struct qstr               *new_name;
 529         const u32                       *bitmask;
 530         struct nfs4_sequence_args       seq_args;
 531 };
 532
 533 struct nfs_renameres {
 534         const struct nfs_server         *server;
 535         struct nfs4_change_info         old_cinfo;
 536         struct nfs_fattr                *old_fattr;
 537         struct nfs4_change_info         new_cinfo;
 538         struct nfs_fattr                *new_fattr;
 539         struct nfs4_sequence_res        seq_res;
 540 };
 541
 542 /*
 543  * Argument struct for decode_entry function
 544  */
 545 struct nfs_entry {
 546         __u64                   ino;
 547         __u64                   cookie,
 548                                 prev_cookie;
 549         const char *            name;
 550         unsigned int            len;
 551         int                     eof;
 552         struct nfs_fh *         fh;
 553         struct nfs_fattr *      fattr;
 554         unsigned char           d_type;
 555         struct nfs_server *     server;
 556 };
 557
 558 /*
 559  * The following types are for NFSv2 only.
 560  */
 561 struct nfs_sattrargs {
 562         struct nfs_fh *         fh;
 563         struct iattr *          sattr;
 564 };
 565
 566 struct nfs_diropargs {
 567         struct nfs_fh *         fh;
 568         const char *            name;
 569         unsigned int            len;
 570 };
 571
 572 struct nfs_createargs {
 573         struct nfs_fh *         fh;
 574         const char *            name;
 575         unsigned int            len;
 576         struct iattr *          sattr;
 577 };
 578
 579 struct nfs_setattrargs {
 580         struct nfs_fh *                 fh;
 581         nfs4_stateid                    stateid;
 582         struct iattr *                  iap;
 583         const struct nfs_server *       server; /* Needed for name mapping */
 584         const u32 *                     bitmask;
 585         struct nfs4_sequence_args       seq_args;
 586 };
 587
 588 struct nfs_setaclargs {
 589         struct nfs_fh *                 fh;
 590         size_t                          acl_len;
 591         unsigned int                    acl_pgbase;
 592         struct page **                  acl_pages;
 593         struct nfs4_sequence_args       seq_args;
 594 };
 595
 596 struct nfs_setaclres {
 597         struct nfs4_sequence_res        seq_res;
 598 };
 599
 600 struct nfs_getaclargs {
 601         struct nfs_fh *                 fh;
 602         size_t                          acl_len;
 603         unsigned int                    acl_pgbase;
 604         struct page **                  acl_pages;
 605         struct page *                   acl_scratch;
 606         struct nfs4_sequence_args       seq_args;
 607 };
 608
 609 /* getxattr ACL interface flags */
 610 #define NFS4_ACL_LEN_REQUEST    0x0001  /* zero length getxattr buffer */
 611 struct nfs_getaclres {
 612         size_t                          acl_len;
 613         size_t                          acl_data_offset;
 614         int                             acl_flags;
 615         struct nfs4_sequence_res        seq_res;
 616 };
 617
 618 struct nfs_setattrres {
 619         struct nfs_fattr *              fattr;
 620         const struct nfs_server *       server;
 621         struct nfs4_sequence_res        seq_res;
 622 };
 623
 624 struct nfs_linkargs {
 625         struct nfs_fh *         fromfh;
 626         struct nfs_fh *         tofh;
 627         const char *            toname;
 628         unsigned int            tolen;
 629 };
 630
 631 struct nfs_symlinkargs {
 632         struct nfs_fh *         fromfh;
 633         const char *            fromname;
 634         unsigned int            fromlen;
 635         struct page **          pages;
 636         unsigned int            pathlen;
 637         struct iattr *          sattr;
 638 };
 639
 640 struct nfs_readdirargs {
 641         struct nfs_fh *         fh;
 642         __u32                   cookie;
 643         unsigned int            count;
 644         struct page **          pages;
 645 };
 646
 647 struct nfs3_getaclargs {
 648         struct nfs_fh *         fh;
 649         int                     mask;
 650         struct page **          pages;
 651 };
 652
 653 struct nfs3_setaclargs {
 654         struct inode *          inode;
 655         int                     mask;
 656         struct posix_acl *      acl_access;
 657         struct posix_acl *      acl_default;
 658         size_t                  len;
 659         unsigned int            npages;
 660         struct page **          pages;
 661 };
 662
 663 struct nfs_diropok {
 664         struct nfs_fh *         fh;
 665         struct nfs_fattr *      fattr;
 666 };
 667
 668 struct nfs_readlinkargs {
 669         struct nfs_fh *         fh;
 670         unsigned int            pgbase;
 671         unsigned int            pglen;
 672         struct page **          pages;
 673 };
 674
 675 struct nfs3_sattrargs {
 676         struct nfs_fh *         fh;
 677         struct iattr *          sattr;
 678         unsigned int            guard;
 679         struct timespec         guardtime;
 680 };
 681
 682 struct nfs3_diropargs {
 683         struct nfs_fh *         fh;
 684         const char *            name;
 685         unsigned int            len;
 686 };
 687
 688 struct nfs3_accessargs {
 689         struct nfs_fh *         fh;
 690         __u32                   access;
 691 };
 692
 693 struct nfs3_createargs {
 694         struct nfs_fh *         fh;
 695         const char *            name;
 696         unsigned int            len;
 697         struct iattr *          sattr;
 698         enum nfs3_createmode    createmode;
 699         __be32                  verifier[2];
 700 };
 701
 702 struct nfs3_mkdirargs {
 703         struct nfs_fh *         fh;
 704         const char *            name;
 705         unsigned int            len;
 706         struct iattr *          sattr;
 707 };
 708
 709 struct nfs3_symlinkargs {
 710         struct nfs_fh *         fromfh;
 711         const char *            fromname;
 712         unsigned int            fromlen;
 713         struct page **          pages;
 714         unsigned int            pathlen;
 715         struct iattr *          sattr;
 716 };
 717
 718 struct nfs3_mknodargs {
 719         struct nfs_fh *         fh;
 720         const char *            name;
 721         unsigned int            len;
 722         enum nfs3_ftype         type;
 723         struct iattr *          sattr;
 724         dev_t                   rdev;
 725 };
 726
 727 struct nfs3_linkargs {
 728         struct nfs_fh *         fromfh;
 729         struct nfs_fh *         tofh;
 730         const char *            toname;
 731         unsigned int            tolen;
 732 };
 733
 734 struct nfs3_readdirargs {
 735         struct nfs_fh *         fh;
 736         __u64                   cookie;
 737         __be32                  verf[2];
 738         int                     plus;
 739         unsigned int            count;
 740         struct page **          pages;
 741 };
 742
 743 struct nfs3_diropres {
 744         struct nfs_fattr *      dir_attr;
 745         struct nfs_fh *         fh;
 746         struct nfs_fattr *      fattr;
 747 };
 748
 749 struct nfs3_accessres {
 750         struct nfs_fattr *      fattr;
 751         __u32                   access;
 752 };
 753
 754 struct nfs3_readlinkargs {
 755         struct nfs_fh *         fh;
 756         unsigned int            pgbase;
 757         unsigned int            pglen;
 758         struct page **          pages;
 759 };
 760
 761 struct nfs3_linkres {
 762         struct nfs_fattr *      dir_attr;
 763         struct nfs_fattr *      fattr;
 764 };
 765
 766 struct nfs3_readdirres {
 767         struct nfs_fattr *      dir_attr;
 768         __be32 *                verf;
 769         int                     plus;
 770 };
 771
 772 struct nfs3_getaclres {
 773         struct nfs_fattr *      fattr;
 774         int                     mask;
 775         unsigned int            acl_access_count;
 776         unsigned int            acl_default_count;
 777         struct posix_acl *      acl_access;
 778         struct posix_acl *      acl_default;
 779 };
 780
 781 struct nfs4_string {
 782         unsigned int len;
 783         char *data;
 784 };
 785
 786 #ifdef CONFIG_NFS_V4
 787
 788 typedef u64 clientid4;
 789
 790 struct nfs4_accessargs {
 791         const struct nfs_fh *           fh;
 792         const u32 *                     bitmask;
 793         u32                             access;
 794         struct nfs4_sequence_args       seq_args;
 795 };
 796
 797 struct nfs4_accessres {
 798         const struct nfs_server *       server;
 799         struct nfs_fattr *              fattr;
 800         u32                             supported;
 801         u32                             access;
 802         struct nfs4_sequence_res        seq_res;
 803 };
 804
 805 struct nfs4_create_arg {
 806         u32                             ftype;
 807         union {
 808                 struct {
 809                         struct page **  pages;
 810                         unsigned int    len;
 811                 } symlink;   /* NF4LNK */
 812                 struct {
 813                         u32             specdata1;
 814                         u32             specdata2;
 815                 } device;    /* NF4BLK, NF4CHR */
 816         } u;
 817         const struct qstr *             name;
 818         const struct nfs_server *       server;
 819         const struct iattr *            attrs;
 820         const struct nfs_fh *           dir_fh;
 821         const u32 *                     bitmask;
 822         struct nfs4_sequence_args       seq_args;
 823 };
 824
 825 struct nfs4_create_res {
 826         const struct nfs_server *       server;
 827         struct nfs_fh *                 fh;
 828         struct nfs_fattr *              fattr;
 829         struct nfs4_change_info         dir_cinfo;
 830         struct nfs_fattr *              dir_fattr;
 831         struct nfs4_sequence_res        seq_res;
 832 };
 833
 834 struct nfs4_fsinfo_arg {
 835         const struct nfs_fh *           fh;
 836         const u32 *                     bitmask;
 837         struct nfs4_sequence_args       seq_args;
 838 };
 839
 840 struct nfs4_fsinfo_res {
 841         struct nfs_fsinfo              *fsinfo;
 842         struct nfs4_sequence_res        seq_res;
 843 };
 844
 845 struct nfs4_getattr_arg {
 846         const struct nfs_fh *           fh;
 847         const u32 *                     bitmask;
 848         struct nfs4_sequence_args       seq_args;
 849 };
 850
 851 struct nfs4_getattr_res {
 852         const struct nfs_server *       server;
 853         struct nfs_fattr *              fattr;
 854         struct nfs4_sequence_res        seq_res;
 855 };
 856
 857 struct nfs4_link_arg {
 858         const struct nfs_fh *           fh;
 859         const struct nfs_fh *           dir_fh;
 860         const struct qstr *             name;
 861         const u32 *                     bitmask;
 862         struct nfs4_sequence_args       seq_args;
 863 };
 864
 865 struct nfs4_link_res {
 866         const struct nfs_server *       server;
 867         struct nfs_fattr *              fattr;
 868         struct nfs4_change_info         cinfo;
 869         struct nfs_fattr *              dir_attr;
 870         struct nfs4_sequence_res        seq_res;
 871 };
 872
 873
 874 struct nfs4_lookup_arg {
 875         const struct nfs_fh *           dir_fh;
 876         const struct qstr *             name;
 877         const u32 *                     bitmask;
 878         struct nfs4_sequence_args       seq_args;
 879 };
 880
 881 struct nfs4_lookup_res {
 882         const struct nfs_server *       server;
 883         struct nfs_fattr *              fattr;
 884         struct nfs_fh *                 fh;
 885         struct nfs4_sequence_res        seq_res;
 886 };
 887
 888 struct nfs4_lookup_root_arg {
 889         const u32 *                     bitmask;
 890         struct nfs4_sequence_args       seq_args;
 891 };
 892
 893 struct nfs4_pathconf_arg {
 894         const struct nfs_fh *           fh;
 895         const u32 *                     bitmask;
 896         struct nfs4_sequence_args       seq_args;
 897 };
 898
 899 struct nfs4_pathconf_res {
 900         struct nfs_pathconf            *pathconf;
 901         struct nfs4_sequence_res        seq_res;
 902 };
 903
 904 struct nfs4_readdir_arg {
 905         const struct nfs_fh *           fh;
 906         u64                             cookie;
 907         nfs4_verifier                   verifier;
 908         u32                             count;
 909         struct page **                  pages;  /* zero-copy data */
 910         unsigned int                    pgbase; /* zero-copy data */
 911         const u32 *                     bitmask;
 912         int                             plus;
 913         struct nfs4_sequence_args       seq_args;
 914 };
 915
 916 struct nfs4_readdir_res {
 917         nfs4_verifier                   verifier;
 918         unsigned int                    pgbase;
 919         struct nfs4_sequence_res        seq_res;
 920 };
 921
 922 struct nfs4_readlink {
 923         const struct nfs_fh *           fh;
 924         unsigned int                    pgbase;
 925         unsigned int                    pglen;   /* zero-copy data */
 926         struct page **                  pages;   /* zero-copy data */
 927         struct nfs4_sequence_args       seq_args;
 928 };
 929
 930 struct nfs4_readlink_res {
 931         struct nfs4_sequence_res        seq_res;
 932 };
 933
 934 #define NFS4_SETCLIENTID_NAMELEN        (127)
 935 struct nfs4_setclientid {
 936         const nfs4_verifier *           sc_verifier;
 937         unsigned int                    sc_name_len;
 938         char                            sc_name[NFS4_SETCLIENTID_NAMELEN + 1];
 939         u32                             sc_prog;
 940         unsigned int                    sc_netid_len;
 941         char                            sc_netid[RPCBIND_MAXNETIDLEN + 1];
 942         unsigned int                    sc_uaddr_len;
 943         char                            sc_uaddr[RPCBIND_MAXUADDRLEN + 1];
 944         u32                             sc_cb_ident;
 945 };
 946
 947 struct nfs4_setclientid_res {
 948         u64                             clientid;
 949         nfs4_verifier                   confirm;
 950 };
 951
 952 struct nfs4_statfs_arg {
 953         const struct nfs_fh *           fh;
 954         const u32 *                     bitmask;
 955         struct nfs4_sequence_args       seq_args;
 956 };
 957
 958 struct nfs4_statfs_res {
 959         struct nfs_fsstat              *fsstat;
 960         struct nfs4_sequence_res        seq_res;
 961 };
 962
 963 struct nfs4_server_caps_arg {
 964         struct nfs_fh                  *fhandle;
 965         struct nfs4_sequence_args       seq_args;
 966 };
 967
 968 struct nfs4_server_caps_res {
 969         u32                             attr_bitmask[3];
 970         u32                             acl_bitmask;
 971         u32                             has_links;
 972         u32                             has_symlinks;
 973         struct nfs4_sequence_res        seq_res;
 974 };
 975
 976 #define NFS4_PATHNAME_MAXCOMPONENTS 512
 977 struct nfs4_pathname {
 978         unsigned int ncomponents;
 979         struct nfs4_string components[NFS4_PATHNAME_MAXCOMPONENTS];
 980 };
 981
 982 #define NFS4_FS_LOCATION_MAXSERVERS 10
 983 struct nfs4_fs_location {
 984         unsigned int nservers;
 985         struct nfs4_string servers[NFS4_FS_LOCATION_MAXSERVERS];
 986         struct nfs4_pathname rootpath;
 987 };
 988
 989 #define NFS4_FS_LOCATIONS_MAXENTRIES 10
 990 struct nfs4_fs_locations {
 991         struct nfs_fattr fattr;
 992         const struct nfs_server *server;
 993         struct nfs4_pathname fs_path;
 994         int nlocations;
 995         struct nfs4_fs_location locations[NFS4_FS_LOCATIONS_MAXENTRIES];
 996 };
 997
 998 struct nfs4_fs_locations_arg {
 999         const struct nfs_fh *dir_fh;
1000         const struct qstr *name;
1001         struct page *page;
1002         const u32 *bitmask;
1003         struct nfs4_sequence_args       seq_args;
1004 };
1005
1006 struct nfs4_fs_locations_res {
1007         struct nfs4_fs_locations       *fs_locations;
1008         struct nfs4_sequence_res        seq_res;
1009 };
1010
1011 struct nfs4_secinfo_oid {
1012         unsigned int len;
1013         char data[GSS_OID_MAX_LEN];
1014 };
1015
1016 struct nfs4_secinfo_gss {
1017         struct nfs4_secinfo_oid sec_oid4;
1018         unsigned int qop4;
1019         unsigned int service;
1020 };
1021
1022 struct nfs4_secinfo_flavor {
1023         unsigned int            flavor;
1024         struct nfs4_secinfo_gss gss;
1025 };
1026
1027 struct nfs4_secinfo_flavors {
1028         unsigned int num_flavors;
1029         struct nfs4_secinfo_flavor flavors[0];
1030 };
1031
1032 struct nfs4_secinfo_arg {
1033         const struct nfs_fh             *dir_fh;
1034         const struct qstr               *name;
1035         struct nfs4_sequence_args       seq_args;
1036 };
1037
1038 struct nfs4_secinfo_res {
1039         struct nfs4_secinfo_flavors     *flavors;
1040         struct nfs4_sequence_res        seq_res;
1041 };
1042
1043 #endif /* CONFIG_NFS_V4 */
1044
1045 struct nfstime4 {
1046         u64     seconds;
1047         u32     nseconds;
1048 };
1049
1050 #ifdef CONFIG_NFS_V4_1
1051 struct nfs_impl_id4 {
1052         u32             domain_len;
1053         char            *domain;
1054         u32             name_len;
1055         char            *name;
1056         struct nfstime4 date;
1057 };
1058
1059 #define NFS4_EXCHANGE_ID_LEN    (48)
1060 struct nfs41_exchange_id_args {
1061         struct nfs_client               *client;
1062         nfs4_verifier                   *verifier;
1063         unsigned int                    id_len;
1064         char                            id[NFS4_EXCHANGE_ID_LEN];
1065         u32                             flags;
1066 };
1067
1068 struct server_owner {
1069         uint64_t                        minor_id;
1070         uint32_t                        major_id_sz;
1071         char                            major_id[NFS4_OPAQUE_LIMIT];
1072 };
1073
1074 struct server_scope {
1075         uint32_t                        server_scope_sz;
1076         char                            server_scope[NFS4_OPAQUE_LIMIT];
1077 };
1078
1079 struct nfs41_exchange_id_res {
1080         struct nfs_client               *client;
1081         u32                             flags;
1082         struct server_scope             *server_scope;
1083 };
1084
1085 struct nfs41_create_session_args {
1086         struct nfs_client              *client;
1087         uint32_t                        flags;
1088         uint32_t                        cb_program;
1089         struct nfs4_channel_attrs       fc_attrs;       /* Fore Channel */
1090         struct nfs4_channel_attrs       bc_attrs;       /* Back Channel */
1091 };
1092
1093 struct nfs41_create_session_res {
1094         struct nfs_client              *client;
1095 };
1096
1097 struct nfs41_reclaim_complete_args {
1098         /* In the future extend to include curr_fh for use with migration */
1099         unsigned char                   one_fs:1;
1100         struct nfs4_sequence_args       seq_args;
1101 };
1102
1103 struct nfs41_reclaim_complete_res {
1104         struct nfs4_sequence_res        seq_res;
1105 };
1106
1107 #define SECINFO_STYLE_CURRENT_FH 0
1108 #define SECINFO_STYLE_PARENT 1
1109 struct nfs41_secinfo_no_name_args {
1110         int                             style;
1111         struct nfs4_sequence_args       seq_args;
1112 };
1113
1114 struct nfs41_test_stateid_args {
1115         nfs4_stateid                    *stateid;
1116         struct nfs4_sequence_args       seq_args;
1117 };
1118
1119 struct nfs41_test_stateid_res {
1120         unsigned int                    status;
1121         struct nfs4_sequence_res        seq_res;
1122 };
1123
1124 struct nfs41_free_stateid_args {
1125         nfs4_stateid                    *stateid;
1126         struct nfs4_sequence_args       seq_args;
1127 };
1128
1129 struct nfs41_free_stateid_res {
1130         unsigned int                    status;
1131         struct nfs4_sequence_res        seq_res;
1132 };
1133
1134 #endif /* CONFIG_NFS_V4_1 */
1135
1136 struct nfs_page;
1137
1138 #define NFS_PAGEVEC_SIZE        (8U)
1139
1140 struct nfs_read_data {
1141         struct rpc_task         task;
1142         struct inode            *inode;
1143         struct rpc_cred         *cred;
1144         struct nfs_fattr        fattr;  /* fattr storage */
1145         struct list_head        pages;  /* Coalesced read requests */
1146         struct list_head        list;   /* lists of struct nfs_read_data */
1147         struct nfs_page         *req;   /* multi ops per nfs_page */
1148         struct page             **pagevec;
1149         unsigned int            npages; /* Max length of pagevec */
1150         struct nfs_readargs args;
1151         struct nfs_readres  res;
1152         unsigned long           timestamp;      /* For lease renewal */
1153         struct pnfs_layout_segment *lseg;
1154         struct nfs_client       *ds_clp;        /* pNFS data server */
1155         const struct rpc_call_ops *mds_ops;
1156         int (*read_done_cb) (struct rpc_task *task, struct nfs_read_data *data);
1157         __u64                   mds_offset;
1158         int                     pnfs_error;
1159         struct page             *page_array[NFS_PAGEVEC_SIZE];
1160 };
1161
1162 struct nfs_write_data {
1163         struct rpc_task         task;
1164         struct inode            *inode;
1165         struct rpc_cred         *cred;
1166         struct nfs_fattr        fattr;
1167         struct nfs_writeverf    verf;
1168         struct list_head        pages;          /* Coalesced requests we wish to flush */
1169         struct list_head        list;           /* lists of struct nfs_write_data */
1170         struct nfs_page         *req;           /* multi ops per nfs_page */
1171         struct page             **pagevec;
1172         unsigned int            npages;         /* Max length of pagevec */
1173         struct nfs_writeargs    args;           /* argument struct */
1174         struct nfs_writeres     res;            /* result struct */
1175         struct pnfs_layout_segment *lseg;
1176         struct nfs_client       *ds_clp;        /* pNFS data server */
1177         int                     ds_commit_index;
1178         const struct rpc_call_ops *mds_ops;
1179         int (*write_done_cb) (struct rpc_task *task, struct nfs_write_data *data);
1180 #ifdef CONFIG_NFS_V4
1181         unsigned long           timestamp;      /* For lease renewal */
1182 #endif
1183         __u64                   mds_offset;     /* Filelayout dense stripe */
1184         int                     pnfs_error;
1185         struct page             *page_array[NFS_PAGEVEC_SIZE];
1186 };
1187
1188 struct nfs_access_entry;
1189 struct nfs_client;
1190 struct rpc_timeout;
1191
1192 /*
1193  * RPC procedure vector for NFSv2/NFSv3 demuxing
1194  */
1195 struct nfs_rpc_ops {
1196         u32     version;                /* Protocol version */
1197         const struct dentry_operations *dentry_ops;
1198         const struct inode_operations *dir_inode_ops;
1199         const struct inode_operations *file_inode_ops;
1200         const struct file_operations *file_ops;
1201
1202         int     (*getroot) (struct nfs_server *, struct nfs_fh *,
1203                             struct nfs_fsinfo *);
1204         int     (*getattr) (struct nfs_server *, struct nfs_fh *,
1205                             struct nfs_fattr *);
1206         int     (*setattr) (struct dentry *, struct nfs_fattr *,
1207                             struct iattr *);
1208         int     (*lookup)  (struct rpc_clnt *clnt, struct inode *, struct qstr *,
1209                             struct nfs_fh *, struct nfs_fattr *);
1210         int     (*access)  (struct inode *, struct nfs_access_entry *);
1211         int     (*readlink)(struct inode *, struct page *, unsigned int,
1212                             unsigned int);
1213         int     (*create)  (struct inode *, struct dentry *,
1214                             struct iattr *, int, struct nfs_open_context *);
1215         int     (*remove)  (struct inode *, struct qstr *);
1216         void    (*unlink_setup)  (struct rpc_message *, struct inode *dir);
1217         int     (*unlink_done) (struct rpc_task *, struct inode *);
1218         int     (*rename)  (struct inode *, struct qstr *,
1219                             struct inode *, struct qstr *);
1220         void    (*rename_setup)  (struct rpc_message *msg, struct inode *dir);
1221         int     (*rename_done) (struct rpc_task *task, struct inode *old_dir, struct inode *new_dir);
1222         int     (*link)    (struct inode *, struct inode *, struct qstr *);
1223         int     (*symlink) (struct inode *, struct dentry *, struct page *,
1224                             unsigned int, struct iattr *);
1225         int     (*mkdir)   (struct inode *, struct dentry *, struct iattr *);
1226         int     (*rmdir)   (struct inode *, struct qstr *);
1227         int     (*readdir) (struct dentry *, struct rpc_cred *,
1228                             u64, struct page **, unsigned int, int);
1229         int     (*mknod)   (struct inode *, struct dentry *, struct iattr *,
1230                             dev_t);
1231         int     (*statfs)  (struct nfs_server *, struct nfs_fh *,
1232                             struct nfs_fsstat *);
1233         int     (*fsinfo)  (struct nfs_server *, struct nfs_fh *,
1234                             struct nfs_fsinfo *);
1235         int     (*pathconf) (struct nfs_server *, struct nfs_fh *,
1236                              struct nfs_pathconf *);
1237         int     (*set_capabilities)(struct nfs_server *, struct nfs_fh *);
1238         int     (*decode_dirent)(struct xdr_stream *, struct nfs_entry *, int);
1239         void    (*read_setup)   (struct nfs_read_data *, struct rpc_message *);
1240         int     (*read_done)  (struct rpc_task *, struct nfs_read_data *);
1241         void    (*write_setup)  (struct nfs_write_data *, struct rpc_message *);
1242         int     (*write_done)  (struct rpc_task *, struct nfs_write_data *);
1243         void    (*commit_setup) (struct nfs_write_data *, struct rpc_message *);
1244         int     (*commit_done) (struct rpc_task *, struct nfs_write_data *);
1245         int     (*lock)(struct file *, int, struct file_lock *);
1246         int     (*lock_check_bounds)(const struct file_lock *);
1247         void    (*clear_acl_cache)(struct inode *);
1248         void    (*close_context)(struct nfs_open_context *ctx, int);
1249         struct inode * (*open_context) (struct inode *dir,
1250                                 struct nfs_open_context *ctx,
1251                                 int open_flags,
1252                                 struct iattr *iattr);
1253         int     (*init_client) (struct nfs_client *, const struct rpc_timeout *,
1254                                 const char *, rpc_authflavor_t, int);
1255         int     (*secinfo)(struct inode *, const struct qstr *, struct nfs4_secinfo_flavors *);
1256 };
1257
1258 /*
1259  *      NFS_CALL(getattr, inode, (fattr));
1260  * into
1261  *      NFS_PROTO(inode)->getattr(fattr);
1262  */
1263 #define NFS_CALL(op, inode, args)       NFS_PROTO(inode)->op args
1264
1265 /*
1266  * Function vectors etc. for the NFS client
1267  */
1268 extern const struct nfs_rpc_ops nfs_v2_clientops;
1269 extern const struct nfs_rpc_ops nfs_v3_clientops;
1270 extern const struct nfs_rpc_ops nfs_v4_clientops;
1271 extern struct rpc_version       nfs_version2;
1272 extern struct rpc_version       nfs_version3;
1273 extern struct rpc_version       nfs_version4;
1274
1275 extern struct rpc_version       nfsacl_version3;
1276 extern struct rpc_program       nfsacl_program;
1277
1278 #endif