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
   7 /*
   8  * To change the maximum rsize and wsize supported by the NFS client, adjust
   9  * NFS_MAX_FILE_IO_SIZE.  64KB is a typical maximum, but some servers can
  10  * support a megabyte or more.  The default is left at 4096 bytes, which is
  11  * reasonable for NFS over UDP.
  12  */
  13 #define NFS_MAX_FILE_IO_SIZE    (1048576U)
  14 #define NFS_DEF_FILE_IO_SIZE    (4096U)
  15 #define NFS_MIN_FILE_IO_SIZE    (1024U)
  16
  17 struct nfs_fsid {
  18         uint64_t                major;
  19         uint64_t                minor;
  20 };
  21
  22 /*
  23  * Helper for checking equality between 2 fsids.
  24  */
  25 static inline int nfs_fsid_equal(const struct nfs_fsid *a, const struct nfs_fsid *b)
  26 {
  27         return a->major == b->major && a->minor == b->minor;
  28 }
  29
  30 struct nfs_fattr {
  31         unsigned int            valid;          /* which fields are valid */
  32         umode_t                 mode;
  33         __u32                   nlink;
  34         __u32                   uid;
  35         __u32                   gid;
  36         dev_t                   rdev;
  37         __u64                   size;
  38         union {
  39                 struct {
  40                         __u32   blocksize;
  41                         __u32   blocks;
  42                 } nfs2;
  43                 struct {
  44                         __u64   used;
  45                 } nfs3;
  46         } du;
  47         struct nfs_fsid         fsid;
  48         __u64                   fileid;
  49         struct timespec         atime;
  50         struct timespec         mtime;
  51         struct timespec         ctime;
  52         __u64                   change_attr;    /* NFSv4 change attribute */
  53         __u64                   pre_change_attr;/* pre-op NFSv4 change attribute */
  54         __u64                   pre_size;       /* pre_op_attr.size       */
  55         struct timespec         pre_mtime;      /* pre_op_attr.mtime      */
  56         struct timespec         pre_ctime;      /* pre_op_attr.ctime      */
  57         unsigned long           time_start;
  58         unsigned long           gencount;
  59 };
  60
  61 #define NFS_ATTR_FATTR_TYPE             (1U << 0)
  62 #define NFS_ATTR_FATTR_MODE             (1U << 1)
  63 #define NFS_ATTR_FATTR_NLINK            (1U << 2)
  64 #define NFS_ATTR_FATTR_OWNER            (1U << 3)
  65 #define NFS_ATTR_FATTR_GROUP            (1U << 4)
  66 #define NFS_ATTR_FATTR_RDEV             (1U << 5)
  67 #define NFS_ATTR_FATTR_SIZE             (1U << 6)
  68 #define NFS_ATTR_FATTR_PRESIZE          (1U << 7)
  69 #define NFS_ATTR_FATTR_BLOCKS_USED      (1U << 8)
  70 #define NFS_ATTR_FATTR_SPACE_USED       (1U << 9)
  71 #define NFS_ATTR_FATTR_FSID             (1U << 10)
  72 #define NFS_ATTR_FATTR_FILEID           (1U << 11)
  73 #define NFS_ATTR_FATTR_ATIME            (1U << 12)
  74 #define NFS_ATTR_FATTR_MTIME            (1U << 13)
  75 #define NFS_ATTR_FATTR_CTIME            (1U << 14)
  76 #define NFS_ATTR_FATTR_PREMTIME         (1U << 15)
  77 #define NFS_ATTR_FATTR_PRECTIME         (1U << 16)
  78 #define NFS_ATTR_FATTR_CHANGE           (1U << 17)
  79 #define NFS_ATTR_FATTR_PRECHANGE        (1U << 18)
  80 #define NFS_ATTR_FATTR_V4_REFERRAL      (1U << 19)      /* NFSv4 referral */
  81
  82 #define NFS_ATTR_FATTR (NFS_ATTR_FATTR_TYPE \
  83                 | NFS_ATTR_FATTR_MODE \
  84                 | NFS_ATTR_FATTR_NLINK \
  85                 | NFS_ATTR_FATTR_OWNER \
  86                 | NFS_ATTR_FATTR_GROUP \
  87                 | NFS_ATTR_FATTR_RDEV \
  88                 | NFS_ATTR_FATTR_SIZE \
  89                 | NFS_ATTR_FATTR_FSID \
  90                 | NFS_ATTR_FATTR_FILEID \
  91                 | NFS_ATTR_FATTR_ATIME \
  92                 | NFS_ATTR_FATTR_MTIME \
  93                 | NFS_ATTR_FATTR_CTIME)
  94 #define NFS_ATTR_FATTR_V2 (NFS_ATTR_FATTR \
  95                 | NFS_ATTR_FATTR_BLOCKS_USED)
  96 #define NFS_ATTR_FATTR_V3 (NFS_ATTR_FATTR \
  97                 | NFS_ATTR_FATTR_SPACE_USED)
  98 #define NFS_ATTR_FATTR_V4 (NFS_ATTR_FATTR \
  99                 | NFS_ATTR_FATTR_SPACE_USED \
 100                 | NFS_ATTR_FATTR_CHANGE)
 101
 102 /*
 103  * Info on the file system
 104  */
 105 struct nfs_fsinfo {
 106         struct nfs_fattr        *fattr; /* Post-op attributes */
 107         __u32                   rtmax;  /* max.  read transfer size */
 108         __u32                   rtpref; /* pref. read transfer size */
 109         __u32                   rtmult; /* reads should be multiple of this */
 110         __u32                   wtmax;  /* max.  write transfer size */
 111         __u32                   wtpref; /* pref. write transfer size */
 112         __u32                   wtmult; /* writes should be multiple of this */
 113         __u32                   dtpref; /* pref. readdir transfer size */
 114         __u64                   maxfilesize;
 115         struct timespec         time_delta; /* server time granularity */
 116         __u32                   lease_time; /* in seconds */
 117         __u32                   layouttype; /* supported pnfs layout driver */
 118 };
 119
 120 struct nfs_fsstat {
 121         struct nfs_fattr        *fattr; /* Post-op attributes */
 122         __u64                   tbytes; /* total size in bytes */
 123         __u64                   fbytes; /* # of free bytes */
 124         __u64                   abytes; /* # of bytes available to user */
 125         __u64                   tfiles; /* # of files */
 126         __u64                   ffiles; /* # of free files */
 127         __u64                   afiles; /* # of files available to user */
 128 };
 129
 130 struct nfs2_fsstat {
 131         __u32                   tsize;  /* Server transfer size */
 132         __u32                   bsize;  /* Filesystem block size */
 133         __u32                   blocks; /* No. of "bsize" blocks on filesystem */
 134         __u32                   bfree;  /* No. of free "bsize" blocks */
 135         __u32                   bavail; /* No. of available "bsize" blocks */
 136 };
 137
 138 struct nfs_pathconf {
 139         struct nfs_fattr        *fattr; /* Post-op attributes */
 140         __u32                   max_link; /* max # of hard links */
 141         __u32                   max_namelen; /* max name length */
 142 };
 143
 144 struct nfs4_change_info {
 145         u32                     atomic;
 146         u64                     before;
 147         u64                     after;
 148 };
 149
 150 struct nfs_seqid;
 151
 152 /* nfs41 sessions channel attributes */
 153 struct nfs4_channel_attrs {
 154         u32                     headerpadsz;
 155         u32                     max_rqst_sz;
 156         u32                     max_resp_sz;
 157         u32                     max_resp_sz_cached;
 158         u32                     max_ops;
 159         u32                     max_reqs;
 160 };
 161
 162 /* nfs41 sessions slot seqid */
 163 struct nfs4_slot {
 164         u32                     seq_nr;
 165 };
 166
 167 struct nfs4_sequence_args {
 168         struct nfs4_session     *sa_session;
 169         u8                      sa_slotid;
 170         u8                      sa_cache_this;
 171 };
 172
 173 struct nfs4_sequence_res {
 174         struct nfs4_session     *sr_session;
 175         struct nfs4_slot        *sr_slot;       /* slot used to send request */
 176         int                     sr_status;      /* sequence operation status */
 177         unsigned long           sr_renewal_time;
 178         u32                     sr_status_flags;
 179 };
 180
 181 struct nfs4_get_lease_time_args {
 182         struct nfs4_sequence_args       la_seq_args;
 183 };
 184
 185 struct nfs4_get_lease_time_res {
 186         struct nfs_fsinfo              *lr_fsinfo;
 187         struct nfs4_sequence_res        lr_seq_res;
 188 };
 189
 190 #define PNFS_LAYOUT_MAXSIZE 4096
 191
 192 struct nfs4_layoutdriver_data {
 193         __u32 len;
 194         void *buf;
 195 };
 196
 197 struct pnfs_layout_range {
 198         u32 iomode;
 199         u64 offset;
 200         u64 length;
 201 };
 202
 203 struct nfs4_layoutget_args {
 204         __u32 type;
 205         struct pnfs_layout_range range;
 206         __u64 minlength;
 207         __u32 maxcount;
 208         struct inode *inode;
 209         struct nfs_open_context *ctx;
 210         struct nfs4_sequence_args seq_args;
 211 };
 212
 213 struct nfs4_layoutget_res {
 214         __u32 return_on_close;
 215         struct pnfs_layout_range range;
 216         __u32 type;
 217         nfs4_stateid stateid;
 218         struct nfs4_layoutdriver_data layout;
 219         struct nfs4_sequence_res seq_res;
 220 };
 221
 222 struct nfs4_layoutget {
 223         struct nfs4_layoutget_args args;
 224         struct nfs4_layoutget_res res;
 225         struct pnfs_layout_segment **lsegpp;
 226         int status;
 227 };
 228
 229 struct nfs4_getdeviceinfo_args {
 230         struct pnfs_device *pdev;
 231         struct nfs4_sequence_args seq_args;
 232 };
 233
 234 struct nfs4_getdeviceinfo_res {
 235         struct pnfs_device *pdev;
 236         struct nfs4_sequence_res seq_res;
 237 };
 238
 239 /*
 240  * Arguments to the open call.
 241  */
 242 struct nfs_openargs {
 243         const struct nfs_fh *   fh;
 244         struct nfs_seqid *      seqid;
 245         int                     open_flags;
 246         fmode_t                 fmode;
 247         __u64                   clientid;
 248         __u64                   id;
 249         union {
 250                 struct {
 251                         struct iattr *  attrs;    /* UNCHECKED, GUARDED */
 252                         nfs4_verifier   verifier; /* EXCLUSIVE */
 253                 };
 254                 nfs4_stateid    delegation;             /* CLAIM_DELEGATE_CUR */
 255                 fmode_t         delegation_type;        /* CLAIM_PREVIOUS */
 256         } u;
 257         const struct qstr *     name;
 258         const struct nfs_server *server;         /* Needed for ID mapping */
 259         const u32 *             bitmask;
 260         __u32                   claim;
 261         struct nfs4_sequence_args       seq_args;
 262 };
 263
 264 struct nfs_openres {
 265         nfs4_stateid            stateid;
 266         struct nfs_fh           fh;
 267         struct nfs4_change_info cinfo;
 268         __u32                   rflags;
 269         struct nfs_fattr *      f_attr;
 270         struct nfs_fattr *      dir_attr;
 271         struct nfs_seqid *      seqid;
 272         const struct nfs_server *server;
 273         fmode_t                 delegation_type;
 274         nfs4_stateid            delegation;
 275         __u32                   do_recall;
 276         __u64                   maxsize;
 277         __u32                   attrset[NFS4_BITMAP_SIZE];
 278         struct nfs4_sequence_res        seq_res;
 279 };
 280
 281 /*
 282  * Arguments to the open_confirm call.
 283  */
 284 struct nfs_open_confirmargs {
 285         const struct nfs_fh *   fh;
 286         nfs4_stateid *          stateid;
 287         struct nfs_seqid *      seqid;
 288 };
 289
 290 struct nfs_open_confirmres {
 291         nfs4_stateid            stateid;
 292         struct nfs_seqid *      seqid;
 293 };
 294
 295 /*
 296  * Arguments to the close call.
 297  */
 298 struct nfs_closeargs {
 299         struct nfs_fh *         fh;
 300         nfs4_stateid *          stateid;
 301         struct nfs_seqid *      seqid;
 302         fmode_t                 fmode;
 303         const u32 *             bitmask;
 304         struct nfs4_sequence_args       seq_args;
 305 };
 306
 307 struct nfs_closeres {
 308         nfs4_stateid            stateid;
 309         struct nfs_fattr *      fattr;
 310         struct nfs_seqid *      seqid;
 311         const struct nfs_server *server;
 312         struct nfs4_sequence_res        seq_res;
 313 };
 314 /*
 315  *  * Arguments to the lock,lockt, and locku call.
 316  *   */
 317 struct nfs_lowner {
 318         __u64                   clientid;
 319         __u64                   id;
 320 };
 321
 322 struct nfs_lock_args {
 323         struct nfs_fh *         fh;
 324         struct file_lock *      fl;
 325         struct nfs_seqid *      lock_seqid;
 326         nfs4_stateid *          lock_stateid;
 327         struct nfs_seqid *      open_seqid;
 328         nfs4_stateid *          open_stateid;
 329         struct nfs_lowner       lock_owner;
 330         unsigned char           block : 1;
 331         unsigned char           reclaim : 1;
 332         unsigned char           new_lock_owner : 1;
 333         struct nfs4_sequence_args       seq_args;
 334 };
 335
 336 struct nfs_lock_res {
 337         nfs4_stateid            stateid;
 338         struct nfs_seqid *      lock_seqid;
 339         struct nfs_seqid *      open_seqid;
 340         struct nfs4_sequence_res        seq_res;
 341 };
 342
 343 struct nfs_locku_args {
 344         struct nfs_fh *         fh;
 345         struct file_lock *      fl;
 346         struct nfs_seqid *      seqid;
 347         nfs4_stateid *          stateid;
 348         struct nfs4_sequence_args       seq_args;
 349 };
 350
 351 struct nfs_locku_res {
 352         nfs4_stateid            stateid;
 353         struct nfs_seqid *      seqid;
 354         struct nfs4_sequence_res        seq_res;
 355 };
 356
 357 struct nfs_lockt_args {
 358         struct nfs_fh *         fh;
 359         struct file_lock *      fl;
 360         struct nfs_lowner       lock_owner;
 361         struct nfs4_sequence_args       seq_args;
 362 };
 363
 364 struct nfs_lockt_res {
 365         struct file_lock *      denied; /* LOCK, LOCKT failed */
 366         struct nfs4_sequence_res        seq_res;
 367 };
 368
 369 struct nfs_release_lockowner_args {
 370         struct nfs_lowner       lock_owner;
 371 };
 372
 373 struct nfs4_delegreturnargs {
 374         const struct nfs_fh *fhandle;
 375         const nfs4_stateid *stateid;
 376         const u32 * bitmask;
 377         struct nfs4_sequence_args       seq_args;
 378 };
 379
 380 struct nfs4_delegreturnres {
 381         struct nfs_fattr * fattr;
 382         const struct nfs_server *server;
 383         struct nfs4_sequence_res        seq_res;
 384 };
 385
 386 /*
 387  * Arguments to the read call.
 388  */
 389 struct nfs_readargs {
 390         struct nfs_fh *         fh;
 391         struct nfs_open_context *context;
 392         struct nfs_lock_context *lock_context;
 393         __u64                   offset;
 394         __u32                   count;
 395         unsigned int            pgbase;
 396         struct page **          pages;
 397         struct nfs4_sequence_args       seq_args;
 398 };
 399
 400 struct nfs_readres {
 401         struct nfs_fattr *      fattr;
 402         __u32                   count;
 403         int                     eof;
 404         struct nfs4_sequence_res        seq_res;
 405 };
 406
 407 /*
 408  * Arguments to the write call.
 409  */
 410 struct nfs_writeargs {
 411         struct nfs_fh *         fh;
 412         struct nfs_open_context *context;
 413         struct nfs_lock_context *lock_context;
 414         __u64                   offset;
 415         __u32                   count;
 416         enum nfs3_stable_how    stable;
 417         unsigned int            pgbase;
 418         struct page **          pages;
 419         const u32 *             bitmask;
 420         struct nfs4_sequence_args       seq_args;
 421 };
 422
 423 struct nfs_writeverf {
 424         enum nfs3_stable_how    committed;
 425         __be32                  verifier[2];
 426 };
 427
 428 struct nfs_writeres {
 429         struct nfs_fattr *      fattr;
 430         struct nfs_writeverf *  verf;
 431         __u32                   count;
 432         const struct nfs_server *server;
 433         struct nfs4_sequence_res        seq_res;
 434 };
 435
 436 /*
 437  * Common arguments to the unlink call
 438  */
 439 struct nfs_removeargs {
 440         const struct nfs_fh     *fh;
 441         struct qstr             name;
 442         const u32 *             bitmask;
 443         struct nfs4_sequence_args       seq_args;
 444 };
 445
 446 struct nfs_removeres {
 447         const struct nfs_server *server;
 448         struct nfs_fattr        *dir_attr;
 449         struct nfs4_change_info cinfo;
 450         struct nfs4_sequence_res        seq_res;
 451 };
 452
 453 /*
 454  * Common arguments to the rename call
 455  */
 456 struct nfs_renameargs {
 457         const struct nfs_fh             *old_dir;
 458         const struct nfs_fh             *new_dir;
 459         const struct qstr               *old_name;
 460         const struct qstr               *new_name;
 461         const u32                       *bitmask;
 462         struct nfs4_sequence_args       seq_args;
 463 };
 464
 465 struct nfs_renameres {
 466         const struct nfs_server         *server;
 467         struct nfs4_change_info         old_cinfo;
 468         struct nfs_fattr                *old_fattr;
 469         struct nfs4_change_info         new_cinfo;
 470         struct nfs_fattr                *new_fattr;
 471         struct nfs4_sequence_res        seq_res;
 472 };
 473
 474 /*
 475  * Argument struct for decode_entry function
 476  */
 477 struct nfs_entry {
 478         __u64                   ino;
 479         __u64                   cookie,
 480                                 prev_cookie;
 481         const char *            name;
 482         unsigned int            len;
 483         int                     eof;
 484         struct nfs_fh *         fh;
 485         struct nfs_fattr *      fattr;
 486         unsigned char           d_type;
 487 };
 488
 489 /*
 490  * The following types are for NFSv2 only.
 491  */
 492 struct nfs_sattrargs {
 493         struct nfs_fh *         fh;
 494         struct iattr *          sattr;
 495 };
 496
 497 struct nfs_diropargs {
 498         struct nfs_fh *         fh;
 499         const char *            name;
 500         unsigned int            len;
 501 };
 502
 503 struct nfs_createargs {
 504         struct nfs_fh *         fh;
 505         const char *            name;
 506         unsigned int            len;
 507         struct iattr *          sattr;
 508 };
 509
 510 struct nfs_setattrargs {
 511         struct nfs_fh *                 fh;
 512         nfs4_stateid                    stateid;
 513         struct iattr *                  iap;
 514         const struct nfs_server *       server; /* Needed for name mapping */
 515         const u32 *                     bitmask;
 516         struct nfs4_sequence_args       seq_args;
 517 };
 518
 519 struct nfs_setaclargs {
 520         struct nfs_fh *                 fh;
 521         size_t                          acl_len;
 522         unsigned int                    acl_pgbase;
 523         struct page **                  acl_pages;
 524         struct nfs4_sequence_args       seq_args;
 525 };
 526
 527 struct nfs_setaclres {
 528         struct nfs4_sequence_res        seq_res;
 529 };
 530
 531 struct nfs_getaclargs {
 532         struct nfs_fh *                 fh;
 533         size_t                          acl_len;
 534         unsigned int                    acl_pgbase;
 535         struct page **                  acl_pages;
 536         struct nfs4_sequence_args       seq_args;
 537 };
 538
 539 struct nfs_getaclres {
 540         size_t                          acl_len;
 541         struct nfs4_sequence_res        seq_res;
 542 };
 543
 544 struct nfs_setattrres {
 545         struct nfs_fattr *              fattr;
 546         const struct nfs_server *       server;
 547         struct nfs4_sequence_res        seq_res;
 548 };
 549
 550 struct nfs_linkargs {
 551         struct nfs_fh *         fromfh;
 552         struct nfs_fh *         tofh;
 553         const char *            toname;
 554         unsigned int            tolen;
 555 };
 556
 557 struct nfs_symlinkargs {
 558         struct nfs_fh *         fromfh;
 559         const char *            fromname;
 560         unsigned int            fromlen;
 561         struct page **          pages;
 562         unsigned int            pathlen;
 563         struct iattr *          sattr;
 564 };
 565
 566 struct nfs_readdirargs {
 567         struct nfs_fh *         fh;
 568         __u32                   cookie;
 569         unsigned int            count;
 570         struct page **          pages;
 571 };
 572
 573 struct nfs3_getaclargs {
 574         struct nfs_fh *         fh;
 575         int                     mask;
 576         struct page **          pages;
 577 };
 578
 579 struct nfs3_setaclargs {
 580         struct inode *          inode;
 581         int                     mask;
 582         struct posix_acl *      acl_access;
 583         struct posix_acl *      acl_default;
 584         size_t                  len;
 585         unsigned int            npages;
 586         struct page **          pages;
 587 };
 588
 589 struct nfs_diropok {
 590         struct nfs_fh *         fh;
 591         struct nfs_fattr *      fattr;
 592 };
 593
 594 struct nfs_readlinkargs {
 595         struct nfs_fh *         fh;
 596         unsigned int            pgbase;
 597         unsigned int            pglen;
 598         struct page **          pages;
 599 };
 600
 601 struct nfs3_sattrargs {
 602         struct nfs_fh *         fh;
 603         struct iattr *          sattr;
 604         unsigned int            guard;
 605         struct timespec         guardtime;
 606 };
 607
 608 struct nfs3_diropargs {
 609         struct nfs_fh *         fh;
 610         const char *            name;
 611         unsigned int            len;
 612 };
 613
 614 struct nfs3_accessargs {
 615         struct nfs_fh *         fh;
 616         __u32                   access;
 617 };
 618
 619 struct nfs3_createargs {
 620         struct nfs_fh *         fh;
 621         const char *            name;
 622         unsigned int            len;
 623         struct iattr *          sattr;
 624         enum nfs3_createmode    createmode;
 625         __be32                  verifier[2];
 626 };
 627
 628 struct nfs3_mkdirargs {
 629         struct nfs_fh *         fh;
 630         const char *            name;
 631         unsigned int            len;
 632         struct iattr *          sattr;
 633 };
 634
 635 struct nfs3_symlinkargs {
 636         struct nfs_fh *         fromfh;
 637         const char *            fromname;
 638         unsigned int            fromlen;
 639         struct page **          pages;
 640         unsigned int            pathlen;
 641         struct iattr *          sattr;
 642 };
 643
 644 struct nfs3_mknodargs {
 645         struct nfs_fh *         fh;
 646         const char *            name;
 647         unsigned int            len;
 648         enum nfs3_ftype         type;
 649         struct iattr *          sattr;
 650         dev_t                   rdev;
 651 };
 652
 653 struct nfs3_linkargs {
 654         struct nfs_fh *         fromfh;
 655         struct nfs_fh *         tofh;
 656         const char *            toname;
 657         unsigned int            tolen;
 658 };
 659
 660 struct nfs3_readdirargs {
 661         struct nfs_fh *         fh;
 662         __u64                   cookie;
 663         __be32                  verf[2];
 664         int                     plus;
 665         unsigned int            count;
 666         struct page **          pages;
 667 };
 668
 669 struct nfs3_diropres {
 670         struct nfs_fattr *      dir_attr;
 671         struct nfs_fh *         fh;
 672         struct nfs_fattr *      fattr;
 673 };
 674
 675 struct nfs3_accessres {
 676         struct nfs_fattr *      fattr;
 677         __u32                   access;
 678 };
 679
 680 struct nfs3_readlinkargs {
 681         struct nfs_fh *         fh;
 682         unsigned int            pgbase;
 683         unsigned int            pglen;
 684         struct page **          pages;
 685 };
 686
 687 struct nfs3_linkres {
 688         struct nfs_fattr *      dir_attr;
 689         struct nfs_fattr *      fattr;
 690 };
 691
 692 struct nfs3_readdirres {
 693         struct nfs_fattr *      dir_attr;
 694         __be32 *                verf;
 695         int                     plus;
 696 };
 697
 698 struct nfs3_getaclres {
 699         struct nfs_fattr *      fattr;
 700         int                     mask;
 701         unsigned int            acl_access_count;
 702         unsigned int            acl_default_count;
 703         struct posix_acl *      acl_access;
 704         struct posix_acl *      acl_default;
 705 };
 706
 707 #ifdef CONFIG_NFS_V4
 708
 709 typedef u64 clientid4;
 710
 711 struct nfs4_accessargs {
 712         const struct nfs_fh *           fh;
 713         const u32 *                     bitmask;
 714         u32                             access;
 715         struct nfs4_sequence_args       seq_args;
 716 };
 717
 718 struct nfs4_accessres {
 719         const struct nfs_server *       server;
 720         struct nfs_fattr *              fattr;
 721         u32                             supported;
 722         u32                             access;
 723         struct nfs4_sequence_res        seq_res;
 724 };
 725
 726 struct nfs4_create_arg {
 727         u32                             ftype;
 728         union {
 729                 struct {
 730                         struct page **  pages;
 731                         unsigned int    len;
 732                 } symlink;   /* NF4LNK */
 733                 struct {
 734                         u32             specdata1;
 735                         u32             specdata2;
 736                 } device;    /* NF4BLK, NF4CHR */
 737         } u;
 738         const struct qstr *             name;
 739         const struct nfs_server *       server;
 740         const struct iattr *            attrs;
 741         const struct nfs_fh *           dir_fh;
 742         const u32 *                     bitmask;
 743         struct nfs4_sequence_args       seq_args;
 744 };
 745
 746 struct nfs4_create_res {
 747         const struct nfs_server *       server;
 748         struct nfs_fh *                 fh;
 749         struct nfs_fattr *              fattr;
 750         struct nfs4_change_info         dir_cinfo;
 751         struct nfs_fattr *              dir_fattr;
 752         struct nfs4_sequence_res        seq_res;
 753 };
 754
 755 struct nfs4_fsinfo_arg {
 756         const struct nfs_fh *           fh;
 757         const u32 *                     bitmask;
 758         struct nfs4_sequence_args       seq_args;
 759 };
 760
 761 struct nfs4_fsinfo_res {
 762         struct nfs_fsinfo              *fsinfo;
 763         struct nfs4_sequence_res        seq_res;
 764 };
 765
 766 struct nfs4_getattr_arg {
 767         const struct nfs_fh *           fh;
 768         const u32 *                     bitmask;
 769         struct nfs4_sequence_args       seq_args;
 770 };
 771
 772 struct nfs4_getattr_res {
 773         const struct nfs_server *       server;
 774         struct nfs_fattr *              fattr;
 775         struct nfs4_sequence_res        seq_res;
 776 };
 777
 778 struct nfs4_link_arg {
 779         const struct nfs_fh *           fh;
 780         const struct nfs_fh *           dir_fh;
 781         const struct qstr *             name;
 782         const u32 *                     bitmask;
 783         struct nfs4_sequence_args       seq_args;
 784 };
 785
 786 struct nfs4_link_res {
 787         const struct nfs_server *       server;
 788         struct nfs_fattr *              fattr;
 789         struct nfs4_change_info         cinfo;
 790         struct nfs_fattr *              dir_attr;
 791         struct nfs4_sequence_res        seq_res;
 792 };
 793
 794
 795 struct nfs4_lookup_arg {
 796         const struct nfs_fh *           dir_fh;
 797         const struct qstr *             name;
 798         const u32 *                     bitmask;
 799         struct nfs4_sequence_args       seq_args;
 800 };
 801
 802 struct nfs4_lookup_res {
 803         const struct nfs_server *       server;
 804         struct nfs_fattr *              fattr;
 805         struct nfs_fh *                 fh;
 806         struct nfs4_sequence_res        seq_res;
 807 };
 808
 809 struct nfs4_lookup_root_arg {
 810         const u32 *                     bitmask;
 811         struct nfs4_sequence_args       seq_args;
 812 };
 813
 814 struct nfs4_pathconf_arg {
 815         const struct nfs_fh *           fh;
 816         const u32 *                     bitmask;
 817         struct nfs4_sequence_args       seq_args;
 818 };
 819
 820 struct nfs4_pathconf_res {
 821         struct nfs_pathconf            *pathconf;
 822         struct nfs4_sequence_res        seq_res;
 823 };
 824
 825 struct nfs4_readdir_arg {
 826         const struct nfs_fh *           fh;
 827         u64                             cookie;
 828         nfs4_verifier                   verifier;
 829         u32                             count;
 830         struct page **                  pages;  /* zero-copy data */
 831         unsigned int                    pgbase; /* zero-copy data */
 832         const u32 *                     bitmask;
 833         int                             plus;
 834         struct nfs4_sequence_args       seq_args;
 835 };
 836
 837 struct nfs4_readdir_res {
 838         nfs4_verifier                   verifier;
 839         unsigned int                    pgbase;
 840         struct nfs4_sequence_res        seq_res;
 841 };
 842
 843 struct nfs4_readlink {
 844         const struct nfs_fh *           fh;
 845         unsigned int                    pgbase;
 846         unsigned int                    pglen;   /* zero-copy data */
 847         struct page **                  pages;   /* zero-copy data */
 848         struct nfs4_sequence_args       seq_args;
 849 };
 850
 851 struct nfs4_readlink_res {
 852         struct nfs4_sequence_res        seq_res;
 853 };
 854
 855 #define NFS4_SETCLIENTID_NAMELEN        (127)
 856 struct nfs4_setclientid {
 857         const nfs4_verifier *           sc_verifier;
 858         unsigned int                    sc_name_len;
 859         char                            sc_name[NFS4_SETCLIENTID_NAMELEN + 1];
 860         u32                             sc_prog;
 861         unsigned int                    sc_netid_len;
 862         char                            sc_netid[RPCBIND_MAXNETIDLEN + 1];
 863         unsigned int                    sc_uaddr_len;
 864         char                            sc_uaddr[RPCBIND_MAXUADDRLEN + 1];
 865         u32                             sc_cb_ident;
 866 };
 867
 868 struct nfs4_setclientid_res {
 869         u64                             clientid;
 870         nfs4_verifier                   confirm;
 871 };
 872
 873 struct nfs4_statfs_arg {
 874         const struct nfs_fh *           fh;
 875         const u32 *                     bitmask;
 876         struct nfs4_sequence_args       seq_args;
 877 };
 878
 879 struct nfs4_statfs_res {
 880         struct nfs_fsstat              *fsstat;
 881         struct nfs4_sequence_res        seq_res;
 882 };
 883
 884 struct nfs4_server_caps_arg {
 885         struct nfs_fh                  *fhandle;
 886         struct nfs4_sequence_args       seq_args;
 887 };
 888
 889 struct nfs4_server_caps_res {
 890         u32                             attr_bitmask[2];
 891         u32                             acl_bitmask;
 892         u32                             has_links;
 893         u32                             has_symlinks;
 894         struct nfs4_sequence_res        seq_res;
 895 };
 896
 897 struct nfs4_string {
 898         unsigned int len;
 899         char *data;
 900 };
 901
 902 #define NFS4_PATHNAME_MAXCOMPONENTS 512
 903 struct nfs4_pathname {
 904         unsigned int ncomponents;
 905         struct nfs4_string components[NFS4_PATHNAME_MAXCOMPONENTS];
 906 };
 907
 908 #define NFS4_FS_LOCATION_MAXSERVERS 10
 909 struct nfs4_fs_location {
 910         unsigned int nservers;
 911         struct nfs4_string servers[NFS4_FS_LOCATION_MAXSERVERS];
 912         struct nfs4_pathname rootpath;
 913 };
 914
 915 #define NFS4_FS_LOCATIONS_MAXENTRIES 10
 916 struct nfs4_fs_locations {
 917         struct nfs_fattr fattr;
 918         const struct nfs_server *server;
 919         struct nfs4_pathname fs_path;
 920         int nlocations;
 921         struct nfs4_fs_location locations[NFS4_FS_LOCATIONS_MAXENTRIES];
 922 };
 923
 924 struct nfs4_fs_locations_arg {
 925         const struct nfs_fh *dir_fh;
 926         const struct qstr *name;
 927         struct page *page;
 928         const u32 *bitmask;
 929         struct nfs4_sequence_args       seq_args;
 930 };
 931
 932 struct nfs4_fs_locations_res {
 933         struct nfs4_fs_locations       *fs_locations;
 934         struct nfs4_sequence_res        seq_res;
 935 };
 936
 937 #endif /* CONFIG_NFS_V4 */
 938
 939 struct nfstime4 {
 940         u64     seconds;
 941         u32     nseconds;
 942 };
 943
 944 #ifdef CONFIG_NFS_V4_1
 945 struct nfs_impl_id4 {
 946         u32             domain_len;
 947         char            *domain;
 948         u32             name_len;
 949         char            *name;
 950         struct nfstime4 date;
 951 };
 952
 953 #define NFS4_EXCHANGE_ID_LEN    (48)
 954 struct nfs41_exchange_id_args {
 955         struct nfs_client               *client;
 956         nfs4_verifier                   *verifier;
 957         unsigned int                    id_len;
 958         char                            id[NFS4_EXCHANGE_ID_LEN];
 959         u32                             flags;
 960 };
 961
 962 struct server_owner {
 963         uint64_t                        minor_id;
 964         uint32_t                        major_id_sz;
 965         char                            major_id[NFS4_OPAQUE_LIMIT];
 966 };
 967
 968 struct server_scope {
 969         uint32_t                        server_scope_sz;
 970         char                            server_scope[NFS4_OPAQUE_LIMIT];
 971 };
 972
 973 struct nfs41_exchange_id_res {
 974         struct nfs_client               *client;
 975         u32                             flags;
 976 };
 977
 978 struct nfs41_create_session_args {
 979         struct nfs_client              *client;
 980         uint32_t                        flags;
 981         uint32_t                        cb_program;
 982         struct nfs4_channel_attrs       fc_attrs;       /* Fore Channel */
 983         struct nfs4_channel_attrs       bc_attrs;       /* Back Channel */
 984 };
 985
 986 struct nfs41_create_session_res {
 987         struct nfs_client              *client;
 988 };
 989
 990 struct nfs41_reclaim_complete_args {
 991         /* In the future extend to include curr_fh for use with migration */
 992         unsigned char                   one_fs:1;
 993         struct nfs4_sequence_args       seq_args;
 994 };
 995
 996 struct nfs41_reclaim_complete_res {
 997         struct nfs4_sequence_res        seq_res;
 998 };
 999 #endif /* CONFIG_NFS_V4_1 */
1000
1001 struct nfs_page;
1002
1003 #define NFS_PAGEVEC_SIZE        (8U)
1004
1005 struct nfs_read_data {
1006         int                     flags;
1007         struct rpc_task         task;
1008         struct inode            *inode;
1009         struct rpc_cred         *cred;
1010         struct nfs_fattr        fattr;  /* fattr storage */
1011         struct list_head        pages;  /* Coalesced read requests */
1012         struct nfs_page         *req;   /* multi ops per nfs_page */
1013         struct page             **pagevec;
1014         unsigned int            npages; /* Max length of pagevec */
1015         struct nfs_readargs args;
1016         struct nfs_readres  res;
1017 #ifdef CONFIG_NFS_V4
1018         unsigned long           timestamp;      /* For lease renewal */
1019 #endif
1020         struct page             *page_array[NFS_PAGEVEC_SIZE];
1021 };
1022
1023 struct nfs_write_data {
1024         int                     flags;
1025         struct rpc_task         task;
1026         struct inode            *inode;
1027         struct rpc_cred         *cred;
1028         struct nfs_fattr        fattr;
1029         struct nfs_writeverf    verf;
1030         struct list_head        pages;          /* Coalesced requests we wish to flush */
1031         struct nfs_page         *req;           /* multi ops per nfs_page */
1032         struct page             **pagevec;
1033         unsigned int            npages;         /* Max length of pagevec */
1034         struct nfs_writeargs    args;           /* argument struct */
1035         struct nfs_writeres     res;            /* result struct */
1036 #ifdef CONFIG_NFS_V4
1037         unsigned long           timestamp;      /* For lease renewal */
1038 #endif
1039         struct page             *page_array[NFS_PAGEVEC_SIZE];
1040 };
1041
1042 struct nfs_access_entry;
1043
1044 /*
1045  * RPC procedure vector for NFSv2/NFSv3 demuxing
1046  */
1047 struct nfs_rpc_ops {
1048         u32     version;                /* Protocol version */
1049         const struct dentry_operations *dentry_ops;
1050         const struct inode_operations *dir_inode_ops;
1051         const struct inode_operations *file_inode_ops;
1052
1053         int     (*getroot) (struct nfs_server *, struct nfs_fh *,
1054                             struct nfs_fsinfo *);
1055         int     (*lookupfh)(struct nfs_server *, struct nfs_fh *,
1056                             struct qstr *, struct nfs_fh *,
1057                             struct nfs_fattr *);
1058         int     (*getattr) (struct nfs_server *, struct nfs_fh *,
1059                             struct nfs_fattr *);
1060         int     (*setattr) (struct dentry *, struct nfs_fattr *,
1061                             struct iattr *);
1062         int     (*lookup)  (struct inode *, struct qstr *,
1063                             struct nfs_fh *, struct nfs_fattr *);
1064         int     (*access)  (struct inode *, struct nfs_access_entry *);
1065         int     (*readlink)(struct inode *, struct page *, unsigned int,
1066                             unsigned int);
1067         int     (*create)  (struct inode *, struct dentry *,
1068                             struct iattr *, int, struct nfs_open_context *);
1069         int     (*remove)  (struct inode *, struct qstr *);
1070         void    (*unlink_setup)  (struct rpc_message *, struct inode *dir);
1071         int     (*unlink_done) (struct rpc_task *, struct inode *);
1072         int     (*rename)  (struct inode *, struct qstr *,
1073                             struct inode *, struct qstr *);
1074         void    (*rename_setup)  (struct rpc_message *msg, struct inode *dir);
1075         int     (*rename_done) (struct rpc_task *task, struct inode *old_dir, struct inode *new_dir);
1076         int     (*link)    (struct inode *, struct inode *, struct qstr *);
1077         int     (*symlink) (struct inode *, struct dentry *, struct page *,
1078                             unsigned int, struct iattr *);
1079         int     (*mkdir)   (struct inode *, struct dentry *, struct iattr *);
1080         int     (*rmdir)   (struct inode *, struct qstr *);
1081         int     (*readdir) (struct dentry *, struct rpc_cred *,
1082                             u64, struct page **, unsigned int, int);
1083         int     (*mknod)   (struct inode *, struct dentry *, struct iattr *,
1084                             dev_t);
1085         int     (*statfs)  (struct nfs_server *, struct nfs_fh *,
1086                             struct nfs_fsstat *);
1087         int     (*fsinfo)  (struct nfs_server *, struct nfs_fh *,
1088                             struct nfs_fsinfo *);
1089         int     (*pathconf) (struct nfs_server *, struct nfs_fh *,
1090                              struct nfs_pathconf *);
1091         int     (*set_capabilities)(struct nfs_server *, struct nfs_fh *);
1092         __be32 *(*decode_dirent)(struct xdr_stream *, struct nfs_entry *, struct nfs_server *, int plus);
1093         void    (*read_setup)   (struct nfs_read_data *, struct rpc_message *);
1094         int     (*read_done)  (struct rpc_task *, struct nfs_read_data *);
1095         void    (*write_setup)  (struct nfs_write_data *, struct rpc_message *);
1096         int     (*write_done)  (struct rpc_task *, struct nfs_write_data *);
1097         void    (*commit_setup) (struct nfs_write_data *, struct rpc_message *);
1098         int     (*commit_done) (struct rpc_task *, struct nfs_write_data *);
1099         int     (*lock)(struct file *, int, struct file_lock *);
1100         int     (*lock_check_bounds)(const struct file_lock *);
1101         void    (*clear_acl_cache)(struct inode *);
1102         void    (*close_context)(struct nfs_open_context *ctx, int);
1103         struct inode * (*open_context) (struct inode *dir,
1104                                 struct nfs_open_context *ctx,
1105                                 int open_flags,
1106                                 struct iattr *iattr);
1107 };
1108
1109 /*
1110  *      NFS_CALL(getattr, inode, (fattr));
1111  * into
1112  *      NFS_PROTO(inode)->getattr(fattr);
1113  */
1114 #define NFS_CALL(op, inode, args)       NFS_PROTO(inode)->op args
1115
1116 /*
1117  * Function vectors etc. for the NFS client
1118  */
1119 extern const struct nfs_rpc_ops nfs_v2_clientops;
1120 extern const struct nfs_rpc_ops nfs_v3_clientops;
1121 extern const struct nfs_rpc_ops nfs_v4_clientops;
1122 extern struct rpc_version       nfs_version2;
1123 extern struct rpc_version       nfs_version3;
1124 extern struct rpc_version       nfs_version4;
1125
1126 extern struct rpc_version       nfsacl_version3;
1127 extern struct rpc_program       nfsacl_program;
1128
1129 #endif