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