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/sunrpc/gss_api.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 nfs4_string {
  18         unsigned int len;
  19         char *data;
  20 };
  21
  22 struct nfs_fsid {
  23         uint64_t                major;
  24         uint64_t                minor;
  25 };
  26
  27 /*
  28  * Helper for checking equality between 2 fsids.
  29  */
  30 static inline int nfs_fsid_equal(const struct nfs_fsid *a, const struct nfs_fsid *b)
  31 {
  32         return a->major == b->major && a->minor == b->minor;
  33 }
  34
  35 struct nfs4_threshold {
  36         __u32   bm;
  37         __u32   l_type;
  38         __u64   rd_sz;
  39         __u64   wr_sz;
  40         __u64   rd_io_sz;
  41         __u64   wr_io_sz;
  42 };
  43
  44 struct nfs_fattr {
  45         unsigned int            valid;          /* which fields are valid */
  46         umode_t                 mode;
  47         __u32                   nlink;
  48         kuid_t                  uid;
  49         kgid_t                  gid;
  50         dev_t                   rdev;
  51         __u64                   size;
  52         union {
  53                 struct {
  54                         __u32   blocksize;
  55                         __u32   blocks;
  56                 } nfs2;
  57                 struct {
  58                         __u64   used;
  59                 } nfs3;
  60         } du;
  61         struct nfs_fsid         fsid;
  62         __u64                   fileid;
  63         __u64                   mounted_on_fileid;
  64         struct timespec         atime;
  65         struct timespec         mtime;
  66         struct timespec         ctime;
  67         __u64                   change_attr;    /* NFSv4 change attribute */
  68         __u64                   pre_change_attr;/* pre-op NFSv4 change attribute */
  69         __u64                   pre_size;       /* pre_op_attr.size       */
  70         struct timespec         pre_mtime;      /* pre_op_attr.mtime      */
  71         struct timespec         pre_ctime;      /* pre_op_attr.ctime      */
  72         unsigned long           time_start;
  73         unsigned long           gencount;
  74         struct nfs4_string      *owner_name;
  75         struct nfs4_string      *group_name;
  76         struct nfs4_threshold   *mdsthreshold;  /* pNFS threshold hints */
  77 };
  78
  79 #define NFS_ATTR_FATTR_TYPE             (1U << 0)
  80 #define NFS_ATTR_FATTR_MODE             (1U << 1)
  81 #define NFS_ATTR_FATTR_NLINK            (1U << 2)
  82 #define NFS_ATTR_FATTR_OWNER            (1U << 3)
  83 #define NFS_ATTR_FATTR_GROUP            (1U << 4)
  84 #define NFS_ATTR_FATTR_RDEV             (1U << 5)
  85 #define NFS_ATTR_FATTR_SIZE             (1U << 6)
  86 #define NFS_ATTR_FATTR_PRESIZE          (1U << 7)
  87 #define NFS_ATTR_FATTR_BLOCKS_USED      (1U << 8)
  88 #define NFS_ATTR_FATTR_SPACE_USED       (1U << 9)
  89 #define NFS_ATTR_FATTR_FSID             (1U << 10)
  90 #define NFS_ATTR_FATTR_FILEID           (1U << 11)
  91 #define NFS_ATTR_FATTR_ATIME            (1U << 12)
  92 #define NFS_ATTR_FATTR_MTIME            (1U << 13)
  93 #define NFS_ATTR_FATTR_CTIME            (1U << 14)
  94 #define NFS_ATTR_FATTR_PREMTIME         (1U << 15)
  95 #define NFS_ATTR_FATTR_PRECTIME         (1U << 16)
  96 #define NFS_ATTR_FATTR_CHANGE           (1U << 17)
  97 #define NFS_ATTR_FATTR_PRECHANGE        (1U << 18)
  98 #define NFS_ATTR_FATTR_V4_LOCATIONS     (1U << 19)
  99 #define NFS_ATTR_FATTR_V4_REFERRAL      (1U << 20)
 100 #define NFS_ATTR_FATTR_MOUNTPOINT       (1U << 21)
 101 #define NFS_ATTR_FATTR_MOUNTED_ON_FILEID (1U << 22)
 102 #define NFS_ATTR_FATTR_OWNER_NAME       (1U << 23)
 103 #define NFS_ATTR_FATTR_GROUP_NAME       (1U << 24)
 104 #define NFS_ATTR_FATTR_V4_SECURITY_LABEL (1U << 25)
 105
 106 #define NFS_ATTR_FATTR (NFS_ATTR_FATTR_TYPE \
 107                 | NFS_ATTR_FATTR_MODE \
 108                 | NFS_ATTR_FATTR_NLINK \
 109                 | NFS_ATTR_FATTR_OWNER \
 110                 | NFS_ATTR_FATTR_GROUP \
 111                 | NFS_ATTR_FATTR_RDEV \
 112                 | NFS_ATTR_FATTR_SIZE \
 113                 | NFS_ATTR_FATTR_FSID \
 114                 | NFS_ATTR_FATTR_FILEID \
 115                 | NFS_ATTR_FATTR_ATIME \
 116                 | NFS_ATTR_FATTR_MTIME \
 117                 | NFS_ATTR_FATTR_CTIME \
 118                 | NFS_ATTR_FATTR_CHANGE)
 119 #define NFS_ATTR_FATTR_V2 (NFS_ATTR_FATTR \
 120                 | NFS_ATTR_FATTR_BLOCKS_USED)
 121 #define NFS_ATTR_FATTR_V3 (NFS_ATTR_FATTR \
 122                 | NFS_ATTR_FATTR_SPACE_USED)
 123 #define NFS_ATTR_FATTR_V4 (NFS_ATTR_FATTR \
 124                 | NFS_ATTR_FATTR_SPACE_USED \
 125                 | NFS_ATTR_FATTR_V4_SECURITY_LABEL)
 126
 127 /*
 128  * Info on the file system
 129  */
 130 struct nfs_fsinfo {
 131         struct nfs_fattr        *fattr; /* Post-op attributes */
 132         __u32                   rtmax;  /* max.  read transfer size */
 133         __u32                   rtpref; /* pref. read transfer size */
 134         __u32                   rtmult; /* reads should be multiple of this */
 135         __u32                   wtmax;  /* max.  write transfer size */
 136         __u32                   wtpref; /* pref. write transfer size */
 137         __u32                   wtmult; /* writes should be multiple of this */
 138         __u32                   dtpref; /* pref. readdir transfer size */
 139         __u64                   maxfilesize;
 140         struct timespec         time_delta; /* server time granularity */
 141         __u32                   lease_time; /* in seconds */
 142         __u32                   layouttype; /* supported pnfs layout driver */
 143         __u32                   blksize; /* preferred pnfs io block size */
 144 };
 145
 146 struct nfs_fsstat {
 147         struct nfs_fattr        *fattr; /* Post-op attributes */
 148         __u64                   tbytes; /* total size in bytes */
 149         __u64                   fbytes; /* # of free bytes */
 150         __u64                   abytes; /* # of bytes available to user */
 151         __u64                   tfiles; /* # of files */
 152         __u64                   ffiles; /* # of free files */
 153         __u64                   afiles; /* # of files available to user */
 154 };
 155
 156 struct nfs2_fsstat {
 157         __u32                   tsize;  /* Server transfer size */
 158         __u32                   bsize;  /* Filesystem block size */
 159         __u32                   blocks; /* No. of "bsize" blocks on filesystem */
 160         __u32                   bfree;  /* No. of free "bsize" blocks */
 161         __u32                   bavail; /* No. of available "bsize" blocks */
 162 };
 163
 164 struct nfs_pathconf {
 165         struct nfs_fattr        *fattr; /* Post-op attributes */
 166         __u32                   max_link; /* max # of hard links */
 167         __u32                   max_namelen; /* max name length */
 168 };
 169
 170 struct nfs4_change_info {
 171         u32                     atomic;
 172         u64                     before;
 173         u64                     after;
 174 };
 175
 176 struct nfs_seqid;
 177
 178 /* nfs41 sessions channel attributes */
 179 struct nfs4_channel_attrs {
 180         u32                     max_rqst_sz;
 181         u32                     max_resp_sz;
 182         u32                     max_resp_sz_cached;
 183         u32                     max_ops;
 184         u32                     max_reqs;
 185 };
 186
 187 struct nfs4_slot;
 188 struct nfs4_sequence_args {
 189         struct nfs4_slot        *sa_slot;
 190         u8                      sa_cache_this : 1,
 191                                 sa_privileged : 1;
 192 };
 193
 194 struct nfs4_sequence_res {
 195         struct nfs4_slot        *sr_slot;       /* slot used to send request */
 196         unsigned long           sr_timestamp;
 197         int                     sr_status;      /* sequence operation status */
 198         u32                     sr_status_flags;
 199         u32                     sr_highest_slotid;
 200         u32                     sr_target_highest_slotid;
 201 };
 202
 203 struct nfs4_get_lease_time_args {
 204         struct nfs4_sequence_args       la_seq_args;
 205 };
 206
 207 struct nfs4_get_lease_time_res {
 208         struct nfs4_sequence_res        lr_seq_res;
 209         struct nfs_fsinfo              *lr_fsinfo;
 210 };
 211
 212 #define PNFS_LAYOUT_MAXSIZE 4096
 213
 214 struct nfs4_layoutdriver_data {
 215         struct page **pages;
 216         __u32 pglen;
 217         __u32 len;
 218 };
 219
 220 struct pnfs_layout_range {
 221         u32 iomode;
 222         u64 offset;
 223         u64 length;
 224 };
 225
 226 struct nfs4_layoutget_args {
 227         struct nfs4_sequence_args seq_args;
 228         __u32 type;
 229         struct pnfs_layout_range range;
 230         __u64 minlength;
 231         __u32 maxcount;
 232         struct inode *inode;
 233         struct nfs_open_context *ctx;
 234         nfs4_stateid stateid;
 235         unsigned long timestamp;
 236         struct nfs4_layoutdriver_data layout;
 237 };
 238
 239 struct nfs4_layoutget_res {
 240         struct nfs4_sequence_res seq_res;
 241         __u32 return_on_close;
 242         struct pnfs_layout_range range;
 243         __u32 type;
 244         nfs4_stateid stateid;
 245         struct nfs4_layoutdriver_data *layoutp;
 246 };
 247
 248 struct nfs4_layoutget {
 249         struct nfs4_layoutget_args args;
 250         struct nfs4_layoutget_res res;
 251         struct rpc_cred *cred;
 252         gfp_t gfp_flags;
 253 };
 254
 255 struct nfs4_getdevicelist_args {
 256         struct nfs4_sequence_args seq_args;
 257         const struct nfs_fh *fh;
 258         u32 layoutclass;
 259 };
 260
 261 struct nfs4_getdevicelist_res {
 262         struct nfs4_sequence_res seq_res;
 263         struct pnfs_devicelist *devlist;
 264 };
 265
 266 struct nfs4_getdeviceinfo_args {
 267         struct nfs4_sequence_args seq_args;
 268         struct pnfs_device *pdev;
 269 };
 270
 271 struct nfs4_getdeviceinfo_res {
 272         struct nfs4_sequence_res seq_res;
 273         struct pnfs_device *pdev;
 274 };
 275
 276 struct nfs4_layoutcommit_args {
 277         struct nfs4_sequence_args seq_args;
 278         nfs4_stateid stateid;
 279         __u64 lastbytewritten;
 280         struct inode *inode;
 281         const u32 *bitmask;
 282 };
 283
 284 struct nfs4_layoutcommit_res {
 285         struct nfs4_sequence_res seq_res;
 286         struct nfs_fattr *fattr;
 287         const struct nfs_server *server;
 288         int status;
 289 };
 290
 291 struct nfs4_layoutcommit_data {
 292         struct rpc_task task;
 293         struct nfs_fattr fattr;
 294         struct list_head lseg_list;
 295         struct rpc_cred *cred;
 296         struct nfs4_layoutcommit_args args;
 297         struct nfs4_layoutcommit_res res;
 298 };
 299
 300 struct nfs4_layoutreturn_args {
 301         struct nfs4_sequence_args seq_args;
 302         struct pnfs_layout_hdr *layout;
 303         struct inode *inode;
 304         nfs4_stateid stateid;
 305         __u32   layout_type;
 306 };
 307
 308 struct nfs4_layoutreturn_res {
 309         struct nfs4_sequence_res seq_res;
 310         u32 lrs_present;
 311         nfs4_stateid stateid;
 312 };
 313
 314 struct nfs4_layoutreturn {
 315         struct nfs4_layoutreturn_args args;
 316         struct nfs4_layoutreturn_res res;
 317         struct rpc_cred *cred;
 318         struct nfs_client *clp;
 319         int rpc_status;
 320 };
 321
 322 struct stateowner_id {
 323         __u64   create_time;
 324         __u32   uniquifier;
 325 };
 326
 327 /*
 328  * Arguments to the open call.
 329  */
 330 struct nfs_openargs {
 331         struct nfs4_sequence_args       seq_args;
 332         const struct nfs_fh *   fh;
 333         struct nfs_seqid *      seqid;
 334         int                     open_flags;
 335         fmode_t                 fmode;
 336         u32                     access;
 337         __u64                   clientid;
 338         struct stateowner_id    id;
 339         union {
 340                 struct {
 341                         struct iattr *  attrs;    /* UNCHECKED, GUARDED */
 342                         nfs4_verifier   verifier; /* EXCLUSIVE */
 343                 };
 344                 nfs4_stateid    delegation;             /* CLAIM_DELEGATE_CUR */
 345                 fmode_t         delegation_type;        /* CLAIM_PREVIOUS */
 346         } u;
 347         const struct qstr *     name;
 348         const struct nfs_server *server;         /* Needed for ID mapping */
 349         const u32 *             bitmask;
 350         const u32 *             open_bitmap;
 351         __u32                   claim;
 352         enum createmode4        createmode;
 353         const struct nfs4_label *label;
 354 };
 355
 356 struct nfs_openres {
 357         struct nfs4_sequence_res        seq_res;
 358         nfs4_stateid            stateid;
 359         struct nfs_fh           fh;
 360         struct nfs4_change_info cinfo;
 361         __u32                   rflags;
 362         struct nfs_fattr *      f_attr;
 363         struct nfs4_label       *f_label;
 364         struct nfs_seqid *      seqid;
 365         const struct nfs_server *server;
 366         fmode_t                 delegation_type;
 367         nfs4_stateid            delegation;
 368         __u32                   do_recall;
 369         __u64                   maxsize;
 370         __u32                   attrset[NFS4_BITMAP_SIZE];
 371         struct nfs4_string      *owner;
 372         struct nfs4_string      *group_owner;
 373         __u32                   access_request;
 374         __u32                   access_supported;
 375         __u32                   access_result;
 376 };
 377
 378 /*
 379  * Arguments to the open_confirm call.
 380  */
 381 struct nfs_open_confirmargs {
 382         struct nfs4_sequence_args       seq_args;
 383         const struct nfs_fh *   fh;
 384         nfs4_stateid *          stateid;
 385         struct nfs_seqid *      seqid;
 386 };
 387
 388 struct nfs_open_confirmres {
 389         struct nfs4_sequence_res        seq_res;
 390         nfs4_stateid            stateid;
 391         struct nfs_seqid *      seqid;
 392 };
 393
 394 /*
 395  * Arguments to the close call.
 396  */
 397 struct nfs_closeargs {
 398         struct nfs4_sequence_args       seq_args;
 399         struct nfs_fh *         fh;
 400         nfs4_stateid *          stateid;
 401         struct nfs_seqid *      seqid;
 402         fmode_t                 fmode;
 403         const u32 *             bitmask;
 404 };
 405
 406 struct nfs_closeres {
 407         struct nfs4_sequence_res        seq_res;
 408         nfs4_stateid            stateid;
 409         struct nfs_fattr *      fattr;
 410         struct nfs_seqid *      seqid;
 411         const struct nfs_server *server;
 412 };
 413 /*
 414  *  * Arguments to the lock,lockt, and locku call.
 415  *   */
 416 struct nfs_lowner {
 417         __u64                   clientid;
 418         __u64                   id;
 419         dev_t                   s_dev;
 420 };
 421
 422 struct nfs_lock_args {
 423         struct nfs4_sequence_args       seq_args;
 424         struct nfs_fh *         fh;
 425         struct file_lock *      fl;
 426         struct nfs_seqid *      lock_seqid;
 427         nfs4_stateid *          lock_stateid;
 428         struct nfs_seqid *      open_seqid;
 429         nfs4_stateid *          open_stateid;
 430         struct nfs_lowner       lock_owner;
 431         unsigned char           block : 1;
 432         unsigned char           reclaim : 1;
 433         unsigned char           new_lock_owner : 1;
 434 };
 435
 436 struct nfs_lock_res {
 437         struct nfs4_sequence_res        seq_res;
 438         nfs4_stateid            stateid;
 439         struct nfs_seqid *      lock_seqid;
 440         struct nfs_seqid *      open_seqid;
 441 };
 442
 443 struct nfs_locku_args {
 444         struct nfs4_sequence_args       seq_args;
 445         struct nfs_fh *         fh;
 446         struct file_lock *      fl;
 447         struct nfs_seqid *      seqid;
 448         nfs4_stateid *          stateid;
 449 };
 450
 451 struct nfs_locku_res {
 452         struct nfs4_sequence_res        seq_res;
 453         nfs4_stateid            stateid;
 454         struct nfs_seqid *      seqid;
 455 };
 456
 457 struct nfs_lockt_args {
 458         struct nfs4_sequence_args       seq_args;
 459         struct nfs_fh *         fh;
 460         struct file_lock *      fl;
 461         struct nfs_lowner       lock_owner;
 462 };
 463
 464 struct nfs_lockt_res {
 465         struct nfs4_sequence_res        seq_res;
 466         struct file_lock *      denied; /* LOCK, LOCKT failed */
 467 };
 468
 469 struct nfs_release_lockowner_args {
 470         struct nfs4_sequence_args       seq_args;
 471         struct nfs_lowner       lock_owner;
 472 };
 473
 474 struct nfs_release_lockowner_res {
 475         struct nfs4_sequence_res        seq_res;
 476 };
 477
 478 struct nfs4_delegreturnargs {
 479         struct nfs4_sequence_args       seq_args;
 480         const struct nfs_fh *fhandle;
 481         const nfs4_stateid *stateid;
 482         const u32 * bitmask;
 483 };
 484
 485 struct nfs4_delegreturnres {
 486         struct nfs4_sequence_res        seq_res;
 487         struct nfs_fattr * fattr;
 488         const struct nfs_server *server;
 489 };
 490
 491 /*
 492  * Arguments to the read call.
 493  */
 494 struct nfs_readargs {
 495         struct nfs4_sequence_args       seq_args;
 496         struct nfs_fh *         fh;
 497         struct nfs_open_context *context;
 498         struct nfs_lock_context *lock_context;
 499         nfs4_stateid            stateid;
 500         __u64                   offset;
 501         __u32                   count;
 502         unsigned int            pgbase;
 503         struct page **          pages;
 504 };
 505
 506 struct nfs_readres {
 507         struct nfs4_sequence_res        seq_res;
 508         struct nfs_fattr *      fattr;
 509         __u32                   count;
 510         int                     eof;
 511 };
 512
 513 /*
 514  * Arguments to the write call.
 515  */
 516 struct nfs_writeargs {
 517         struct nfs4_sequence_args       seq_args;
 518         struct nfs_fh *         fh;
 519         struct nfs_open_context *context;
 520         struct nfs_lock_context *lock_context;
 521         nfs4_stateid            stateid;
 522         __u64                   offset;
 523         __u32                   count;
 524         enum nfs3_stable_how    stable;
 525         unsigned int            pgbase;
 526         struct page **          pages;
 527         const u32 *             bitmask;
 528 };
 529
 530 struct nfs_write_verifier {
 531         char                    data[8];
 532 };
 533
 534 struct nfs_writeverf {
 535         struct nfs_write_verifier verifier;
 536         enum nfs3_stable_how    committed;
 537 };
 538
 539 struct nfs_writeres {
 540         struct nfs4_sequence_res        seq_res;
 541         struct nfs_fattr *      fattr;
 542         struct nfs_writeverf *  verf;
 543         __u32                   count;
 544         const struct nfs_server *server;
 545 };
 546
 547 /*
 548  * Arguments to the commit call.
 549  */
 550 struct nfs_commitargs {
 551         struct nfs4_sequence_args       seq_args;
 552         struct nfs_fh           *fh;
 553         __u64                   offset;
 554         __u32                   count;
 555         const u32               *bitmask;
 556 };
 557
 558 struct nfs_commitres {
 559         struct nfs4_sequence_res        seq_res;
 560         struct nfs_fattr        *fattr;
 561         struct nfs_writeverf    *verf;
 562         const struct nfs_server *server;
 563 };
 564
 565 /*
 566  * Common arguments to the unlink call
 567  */
 568 struct nfs_removeargs {
 569         struct nfs4_sequence_args       seq_args;
 570         const struct nfs_fh     *fh;
 571         struct qstr             name;
 572 };
 573
 574 struct nfs_removeres {
 575         struct nfs4_sequence_res        seq_res;
 576         const struct nfs_server *server;
 577         struct nfs_fattr        *dir_attr;
 578         struct nfs4_change_info cinfo;
 579 };
 580
 581 /*
 582  * Common arguments to the rename call
 583  */
 584 struct nfs_renameargs {
 585         struct nfs4_sequence_args       seq_args;
 586         const struct nfs_fh             *old_dir;
 587         const struct nfs_fh             *new_dir;
 588         const struct qstr               *old_name;
 589         const struct qstr               *new_name;
 590 };
 591
 592 struct nfs_renameres {
 593         struct nfs4_sequence_res        seq_res;
 594         const struct nfs_server         *server;
 595         struct nfs4_change_info         old_cinfo;
 596         struct nfs_fattr                *old_fattr;
 597         struct nfs4_change_info         new_cinfo;
 598         struct nfs_fattr                *new_fattr;
 599 };
 600
 601 /* parsed sec= options */
 602 #define NFS_AUTH_INFO_MAX_FLAVORS 12 /* see fs/nfs/super.c */
 603 struct nfs_auth_info {
 604         unsigned int            flavor_len;
 605         rpc_authflavor_t        flavors[NFS_AUTH_INFO_MAX_FLAVORS];
 606 };
 607
 608 /*
 609  * Argument struct for decode_entry function
 610  */
 611 struct nfs_entry {
 612         __u64                   ino;
 613         __u64                   cookie,
 614                                 prev_cookie;
 615         const char *            name;
 616         unsigned int            len;
 617         int                     eof;
 618         struct nfs_fh *         fh;
 619         struct nfs_fattr *      fattr;
 620         struct nfs4_label  *label;
 621         unsigned char           d_type;
 622         struct nfs_server *     server;
 623 };
 624
 625 /*
 626  * The following types are for NFSv2 only.
 627  */
 628 struct nfs_sattrargs {
 629         struct nfs_fh *         fh;
 630         struct iattr *          sattr;
 631 };
 632
 633 struct nfs_diropargs {
 634         struct nfs_fh *         fh;
 635         const char *            name;
 636         unsigned int            len;
 637 };
 638
 639 struct nfs_createargs {
 640         struct nfs_fh *         fh;
 641         const char *            name;
 642         unsigned int            len;
 643         struct iattr *          sattr;
 644 };
 645
 646 struct nfs_setattrargs {
 647         struct nfs4_sequence_args       seq_args;
 648         struct nfs_fh *                 fh;
 649         nfs4_stateid                    stateid;
 650         struct iattr *                  iap;
 651         const struct nfs_server *       server; /* Needed for name mapping */
 652         const u32 *                     bitmask;
 653         const struct nfs4_label         *label;
 654 };
 655
 656 struct nfs_setaclargs {
 657         struct nfs4_sequence_args       seq_args;
 658         struct nfs_fh *                 fh;
 659         size_t                          acl_len;
 660         unsigned int                    acl_pgbase;
 661         struct page **                  acl_pages;
 662 };
 663
 664 struct nfs_setaclres {
 665         struct nfs4_sequence_res        seq_res;
 666 };
 667
 668 struct nfs_getaclargs {
 669         struct nfs4_sequence_args       seq_args;
 670         struct nfs_fh *                 fh;
 671         size_t                          acl_len;
 672         unsigned int                    acl_pgbase;
 673         struct page **                  acl_pages;
 674 };
 675
 676 /* getxattr ACL interface flags */
 677 #define NFS4_ACL_TRUNC          0x0001  /* ACL was truncated */
 678 struct nfs_getaclres {
 679         struct nfs4_sequence_res        seq_res;
 680         size_t                          acl_len;
 681         size_t                          acl_data_offset;
 682         int                             acl_flags;
 683         struct page *                   acl_scratch;
 684 };
 685
 686 struct nfs_setattrres {
 687         struct nfs4_sequence_res        seq_res;
 688         struct nfs_fattr *              fattr;
 689         struct nfs4_label               *label;
 690         const struct nfs_server *       server;
 691 };
 692
 693 struct nfs_linkargs {
 694         struct nfs_fh *         fromfh;
 695         struct nfs_fh *         tofh;
 696         const char *            toname;
 697         unsigned int            tolen;
 698 };
 699
 700 struct nfs_symlinkargs {
 701         struct nfs_fh *         fromfh;
 702         const char *            fromname;
 703         unsigned int            fromlen;
 704         struct page **          pages;
 705         unsigned int            pathlen;
 706         struct iattr *          sattr;
 707 };
 708
 709 struct nfs_readdirargs {
 710         struct nfs_fh *         fh;
 711         __u32                   cookie;
 712         unsigned int            count;
 713         struct page **          pages;
 714 };
 715
 716 struct nfs3_getaclargs {
 717         struct nfs_fh *         fh;
 718         int                     mask;
 719         struct page **          pages;
 720 };
 721
 722 struct nfs3_setaclargs {
 723         struct inode *          inode;
 724         int                     mask;
 725         struct posix_acl *      acl_access;
 726         struct posix_acl *      acl_default;
 727         size_t                  len;
 728         unsigned int            npages;
 729         struct page **          pages;
 730 };
 731
 732 struct nfs_diropok {
 733         struct nfs_fh *         fh;
 734         struct nfs_fattr *      fattr;
 735 };
 736
 737 struct nfs_readlinkargs {
 738         struct nfs_fh *         fh;
 739         unsigned int            pgbase;
 740         unsigned int            pglen;
 741         struct page **          pages;
 742 };
 743
 744 struct nfs3_sattrargs {
 745         struct nfs_fh *         fh;
 746         struct iattr *          sattr;
 747         unsigned int            guard;
 748         struct timespec         guardtime;
 749 };
 750
 751 struct nfs3_diropargs {
 752         struct nfs_fh *         fh;
 753         const char *            name;
 754         unsigned int            len;
 755 };
 756
 757 struct nfs3_accessargs {
 758         struct nfs_fh *         fh;
 759         __u32                   access;
 760 };
 761
 762 struct nfs3_createargs {
 763         struct nfs_fh *         fh;
 764         const char *            name;
 765         unsigned int            len;
 766         struct iattr *          sattr;
 767         enum nfs3_createmode    createmode;
 768         __be32                  verifier[2];
 769 };
 770
 771 struct nfs3_mkdirargs {
 772         struct nfs_fh *         fh;
 773         const char *            name;
 774         unsigned int            len;
 775         struct iattr *          sattr;
 776 };
 777
 778 struct nfs3_symlinkargs {
 779         struct nfs_fh *         fromfh;
 780         const char *            fromname;
 781         unsigned int            fromlen;
 782         struct page **          pages;
 783         unsigned int            pathlen;
 784         struct iattr *          sattr;
 785 };
 786
 787 struct nfs3_mknodargs {
 788         struct nfs_fh *         fh;
 789         const char *            name;
 790         unsigned int            len;
 791         enum nfs3_ftype         type;
 792         struct iattr *          sattr;
 793         dev_t                   rdev;
 794 };
 795
 796 struct nfs3_linkargs {
 797         struct nfs_fh *         fromfh;
 798         struct nfs_fh *         tofh;
 799         const char *            toname;
 800         unsigned int            tolen;
 801 };
 802
 803 struct nfs3_readdirargs {
 804         struct nfs_fh *         fh;
 805         __u64                   cookie;
 806         __be32                  verf[2];
 807         int                     plus;
 808         unsigned int            count;
 809         struct page **          pages;
 810 };
 811
 812 struct nfs3_diropres {
 813         struct nfs_fattr *      dir_attr;
 814         struct nfs_fh *         fh;
 815         struct nfs_fattr *      fattr;
 816 };
 817
 818 struct nfs3_accessres {
 819         struct nfs_fattr *      fattr;
 820         __u32                   access;
 821 };
 822
 823 struct nfs3_readlinkargs {
 824         struct nfs_fh *         fh;
 825         unsigned int            pgbase;
 826         unsigned int            pglen;
 827         struct page **          pages;
 828 };
 829
 830 struct nfs3_linkres {
 831         struct nfs_fattr *      dir_attr;
 832         struct nfs_fattr *      fattr;
 833 };
 834
 835 struct nfs3_readdirres {
 836         struct nfs_fattr *      dir_attr;
 837         __be32 *                verf;
 838         int                     plus;
 839 };
 840
 841 struct nfs3_getaclres {
 842         struct nfs_fattr *      fattr;
 843         int                     mask;
 844         unsigned int            acl_access_count;
 845         unsigned int            acl_default_count;
 846         struct posix_acl *      acl_access;
 847         struct posix_acl *      acl_default;
 848 };
 849
 850 #if IS_ENABLED(CONFIG_NFS_V4)
 851
 852 typedef u64 clientid4;
 853
 854 struct nfs4_accessargs {
 855         struct nfs4_sequence_args       seq_args;
 856         const struct nfs_fh *           fh;
 857         const u32 *                     bitmask;
 858         u32                             access;
 859 };
 860
 861 struct nfs4_accessres {
 862         struct nfs4_sequence_res        seq_res;
 863         const struct nfs_server *       server;
 864         struct nfs_fattr *              fattr;
 865         u32                             supported;
 866         u32                             access;
 867 };
 868
 869 struct nfs4_create_arg {
 870         struct nfs4_sequence_args       seq_args;
 871         u32                             ftype;
 872         union {
 873                 struct {
 874                         struct page **  pages;
 875                         unsigned int    len;
 876                 } symlink;   /* NF4LNK */
 877                 struct {
 878                         u32             specdata1;
 879                         u32             specdata2;
 880                 } device;    /* NF4BLK, NF4CHR */
 881         } u;
 882         const struct qstr *             name;
 883         const struct nfs_server *       server;
 884         const struct iattr *            attrs;
 885         const struct nfs_fh *           dir_fh;
 886         const u32 *                     bitmask;
 887         const struct nfs4_label         *label;
 888 };
 889
 890 struct nfs4_create_res {
 891         struct nfs4_sequence_res        seq_res;
 892         const struct nfs_server *       server;
 893         struct nfs_fh *                 fh;
 894         struct nfs_fattr *              fattr;
 895         struct nfs4_label               *label;
 896         struct nfs4_change_info         dir_cinfo;
 897 };
 898
 899 struct nfs4_fsinfo_arg {
 900         struct nfs4_sequence_args       seq_args;
 901         const struct nfs_fh *           fh;
 902         const u32 *                     bitmask;
 903 };
 904
 905 struct nfs4_fsinfo_res {
 906         struct nfs4_sequence_res        seq_res;
 907         struct nfs_fsinfo              *fsinfo;
 908 };
 909
 910 struct nfs4_getattr_arg {
 911         struct nfs4_sequence_args       seq_args;
 912         const struct nfs_fh *           fh;
 913         const u32 *                     bitmask;
 914 };
 915
 916 struct nfs4_getattr_res {
 917         struct nfs4_sequence_res        seq_res;
 918         const struct nfs_server *       server;
 919         struct nfs_fattr *              fattr;
 920         struct nfs4_label               *label;
 921 };
 922
 923 struct nfs4_link_arg {
 924         struct nfs4_sequence_args       seq_args;
 925         const struct nfs_fh *           fh;
 926         const struct nfs_fh *           dir_fh;
 927         const struct qstr *             name;
 928         const u32 *                     bitmask;
 929 };
 930
 931 struct nfs4_link_res {
 932         struct nfs4_sequence_res        seq_res;
 933         const struct nfs_server *       server;
 934         struct nfs_fattr *              fattr;
 935         struct nfs4_label               *label;
 936         struct nfs4_change_info         cinfo;
 937         struct nfs_fattr *              dir_attr;
 938 };
 939
 940
 941 struct nfs4_lookup_arg {
 942         struct nfs4_sequence_args       seq_args;
 943         const struct nfs_fh *           dir_fh;
 944         const struct qstr *             name;
 945         const u32 *                     bitmask;
 946 };
 947
 948 struct nfs4_lookup_res {
 949         struct nfs4_sequence_res        seq_res;
 950         const struct nfs_server *       server;
 951         struct nfs_fattr *              fattr;
 952         struct nfs_fh *                 fh;
 953         struct nfs4_label               *label;
 954 };
 955
 956 struct nfs4_lookup_root_arg {
 957         struct nfs4_sequence_args       seq_args;
 958         const u32 *                     bitmask;
 959 };
 960
 961 struct nfs4_pathconf_arg {
 962         struct nfs4_sequence_args       seq_args;
 963         const struct nfs_fh *           fh;
 964         const u32 *                     bitmask;
 965 };
 966
 967 struct nfs4_pathconf_res {
 968         struct nfs4_sequence_res        seq_res;
 969         struct nfs_pathconf            *pathconf;
 970 };
 971
 972 struct nfs4_readdir_arg {
 973         struct nfs4_sequence_args       seq_args;
 974         const struct nfs_fh *           fh;
 975         u64                             cookie;
 976         nfs4_verifier                   verifier;
 977         u32                             count;
 978         struct page **                  pages;  /* zero-copy data */
 979         unsigned int                    pgbase; /* zero-copy data */
 980         const u32 *                     bitmask;
 981         int                             plus;
 982 };
 983
 984 struct nfs4_readdir_res {
 985         struct nfs4_sequence_res        seq_res;
 986         nfs4_verifier                   verifier;
 987         unsigned int                    pgbase;
 988 };
 989
 990 struct nfs4_readlink {
 991         struct nfs4_sequence_args       seq_args;
 992         const struct nfs_fh *           fh;
 993         unsigned int                    pgbase;
 994         unsigned int                    pglen;   /* zero-copy data */
 995         struct page **                  pages;   /* zero-copy data */
 996 };
 997
 998 struct nfs4_readlink_res {
 999         struct nfs4_sequence_res        seq_res;
1000 };
1001
1002 #define NFS4_SETCLIENTID_NAMELEN        (127)
1003 struct nfs4_setclientid {
1004         const nfs4_verifier *           sc_verifier;
1005         unsigned int                    sc_name_len;
1006         char                            sc_name[NFS4_SETCLIENTID_NAMELEN + 1];
1007         u32                             sc_prog;
1008         unsigned int                    sc_netid_len;
1009         char                            sc_netid[RPCBIND_MAXNETIDLEN + 1];
1010         unsigned int                    sc_uaddr_len;
1011         char                            sc_uaddr[RPCBIND_MAXUADDRLEN + 1];
1012         u32                             sc_cb_ident;
1013 };
1014
1015 struct nfs4_setclientid_res {
1016         u64                             clientid;
1017         nfs4_verifier                   confirm;
1018 };
1019
1020 struct nfs4_statfs_arg {
1021         struct nfs4_sequence_args       seq_args;
1022         const struct nfs_fh *           fh;
1023         const u32 *                     bitmask;
1024 };
1025
1026 struct nfs4_statfs_res {
1027         struct nfs4_sequence_res        seq_res;
1028         struct nfs_fsstat              *fsstat;
1029 };
1030
1031 struct nfs4_server_caps_arg {
1032         struct nfs4_sequence_args       seq_args;
1033         struct nfs_fh                  *fhandle;
1034 };
1035
1036 struct nfs4_server_caps_res {
1037         struct nfs4_sequence_res        seq_res;
1038         u32                             attr_bitmask[3];
1039         u32                             acl_bitmask;
1040         u32                             has_links;
1041         u32                             has_symlinks;
1042         u32                             fh_expire_type;
1043 };
1044
1045 #define NFS4_PATHNAME_MAXCOMPONENTS 512
1046 struct nfs4_pathname {
1047         unsigned int ncomponents;
1048         struct nfs4_string components[NFS4_PATHNAME_MAXCOMPONENTS];
1049 };
1050
1051 #define NFS4_FS_LOCATION_MAXSERVERS 10
1052 struct nfs4_fs_location {
1053         unsigned int nservers;
1054         struct nfs4_string servers[NFS4_FS_LOCATION_MAXSERVERS];
1055         struct nfs4_pathname rootpath;
1056 };
1057
1058 #define NFS4_FS_LOCATIONS_MAXENTRIES 10
1059 struct nfs4_fs_locations {
1060         struct nfs_fattr fattr;
1061         const struct nfs_server *server;
1062         struct nfs4_pathname fs_path;
1063         int nlocations;
1064         struct nfs4_fs_location locations[NFS4_FS_LOCATIONS_MAXENTRIES];
1065 };
1066
1067 struct nfs4_fs_locations_arg {
1068         struct nfs4_sequence_args       seq_args;
1069         const struct nfs_fh *dir_fh;
1070         const struct nfs_fh *fh;
1071         const struct qstr *name;
1072         struct page *page;
1073         const u32 *bitmask;
1074         clientid4 clientid;
1075         unsigned char migration:1, renew:1;
1076 };
1077
1078 struct nfs4_fs_locations_res {
1079         struct nfs4_sequence_res        seq_res;
1080         struct nfs4_fs_locations       *fs_locations;
1081         unsigned char                   migration:1, renew:1;
1082 };
1083
1084 struct nfs4_secinfo4 {
1085         u32                     flavor;
1086         struct rpcsec_gss_info  flavor_info;
1087 };
1088
1089 struct nfs4_secinfo_flavors {
1090         unsigned int            num_flavors;
1091         struct nfs4_secinfo4    flavors[0];
1092 };
1093
1094 struct nfs4_secinfo_arg {
1095         struct nfs4_sequence_args       seq_args;
1096         const struct nfs_fh             *dir_fh;
1097         const struct qstr               *name;
1098 };
1099
1100 struct nfs4_secinfo_res {
1101         struct nfs4_sequence_res        seq_res;
1102         struct nfs4_secinfo_flavors     *flavors;
1103 };
1104
1105 struct nfs4_fsid_present_arg {
1106         struct nfs4_sequence_args       seq_args;
1107         const struct nfs_fh             *fh;
1108         clientid4                       clientid;
1109         unsigned char                   renew:1;
1110 };
1111
1112 struct nfs4_fsid_present_res {
1113         struct nfs4_sequence_res        seq_res;
1114         struct nfs_fh                   *fh;
1115         unsigned char                   renew:1;
1116 };
1117
1118 #endif /* CONFIG_NFS_V4 */
1119
1120 struct nfstime4 {
1121         u64     seconds;
1122         u32     nseconds;
1123 };
1124
1125 #ifdef CONFIG_NFS_V4_1
1126
1127 struct pnfs_commit_bucket {
1128         struct list_head written;
1129         struct list_head committing;
1130         struct pnfs_layout_segment *wlseg;
1131         struct pnfs_layout_segment *clseg;
1132 };
1133
1134 struct pnfs_ds_commit_info {
1135         int nwritten;
1136         int ncommitting;
1137         int nbuckets;
1138         struct pnfs_commit_bucket *buckets;
1139 };
1140
1141 #define NFS4_OP_MAP_NUM_LONGS \
1142         DIV_ROUND_UP(LAST_NFS4_OP, 8 * sizeof(unsigned long))
1143 #define NFS4_OP_MAP_NUM_WORDS \
1144         (NFS4_OP_MAP_NUM_LONGS * sizeof(unsigned long) / sizeof(u32))
1145 struct nfs4_op_map {
1146         union {
1147                 unsigned long longs[NFS4_OP_MAP_NUM_LONGS];
1148                 u32 words[NFS4_OP_MAP_NUM_WORDS];
1149         } u;
1150 };
1151
1152 struct nfs41_state_protection {
1153         u32 how;
1154         struct nfs4_op_map enforce;
1155         struct nfs4_op_map allow;
1156 };
1157
1158 #define NFS4_EXCHANGE_ID_LEN    (48)
1159 struct nfs41_exchange_id_args {
1160         struct nfs_client               *client;
1161         nfs4_verifier                   *verifier;
1162         unsigned int                    id_len;
1163         char                            id[NFS4_EXCHANGE_ID_LEN];
1164         u32                             flags;
1165         struct nfs41_state_protection   state_protect;
1166 };
1167
1168 struct nfs41_server_owner {
1169         uint64_t                        minor_id;
1170         uint32_t                        major_id_sz;
1171         char                            major_id[NFS4_OPAQUE_LIMIT];
1172 };
1173
1174 struct nfs41_server_scope {
1175         uint32_t                        server_scope_sz;
1176         char                            server_scope[NFS4_OPAQUE_LIMIT];
1177 };
1178
1179 struct nfs41_impl_id {
1180         char                            domain[NFS4_OPAQUE_LIMIT + 1];
1181         char                            name[NFS4_OPAQUE_LIMIT + 1];
1182         struct nfstime4                 date;
1183 };
1184
1185 struct nfs41_bind_conn_to_session_res {
1186         struct nfs4_session             *session;
1187         u32                             dir;
1188         bool                            use_conn_in_rdma_mode;
1189 };
1190
1191 struct nfs41_exchange_id_res {
1192         u64                             clientid;
1193         u32                             seqid;
1194         u32                             flags;
1195         struct nfs41_server_owner       *server_owner;
1196         struct nfs41_server_scope       *server_scope;
1197         struct nfs41_impl_id            *impl_id;
1198         struct nfs41_state_protection   state_protect;
1199 };
1200
1201 struct nfs41_create_session_args {
1202         struct nfs_client              *client;
1203         uint32_t                        flags;
1204         uint32_t                        cb_program;
1205         struct nfs4_channel_attrs       fc_attrs;       /* Fore Channel */
1206         struct nfs4_channel_attrs       bc_attrs;       /* Back Channel */
1207 };
1208
1209 struct nfs41_create_session_res {
1210         struct nfs_client              *client;
1211 };
1212
1213 struct nfs41_reclaim_complete_args {
1214         struct nfs4_sequence_args       seq_args;
1215         /* In the future extend to include curr_fh for use with migration */
1216         unsigned char                   one_fs:1;
1217 };
1218
1219 struct nfs41_reclaim_complete_res {
1220         struct nfs4_sequence_res        seq_res;
1221 };
1222
1223 #define SECINFO_STYLE_CURRENT_FH 0
1224 #define SECINFO_STYLE_PARENT 1
1225 struct nfs41_secinfo_no_name_args {
1226         struct nfs4_sequence_args       seq_args;
1227         int                             style;
1228 };
1229
1230 struct nfs41_test_stateid_args {
1231         struct nfs4_sequence_args       seq_args;
1232         nfs4_stateid                    *stateid;
1233 };
1234
1235 struct nfs41_test_stateid_res {
1236         struct nfs4_sequence_res        seq_res;
1237         unsigned int                    status;
1238 };
1239
1240 struct nfs41_free_stateid_args {
1241         struct nfs4_sequence_args       seq_args;
1242         nfs4_stateid                    stateid;
1243 };
1244
1245 struct nfs41_free_stateid_res {
1246         struct nfs4_sequence_res        seq_res;
1247         unsigned int                    status;
1248 };
1249
1250 #else
1251
1252 struct pnfs_ds_commit_info {
1253 };
1254
1255 #endif /* CONFIG_NFS_V4_1 */
1256
1257 struct nfs_page;
1258
1259 #define NFS_PAGEVEC_SIZE        (8U)
1260
1261 struct nfs_page_array {
1262         struct page             **pagevec;
1263         unsigned int            npages;         /* Max length of pagevec */
1264         struct page             *page_array[NFS_PAGEVEC_SIZE];
1265 };
1266
1267 struct nfs_read_data {
1268         struct nfs_pgio_header  *header;
1269         struct list_head        list;
1270         struct rpc_task         task;
1271         struct nfs_fattr        fattr;  /* fattr storage */
1272         struct nfs_readargs args;
1273         struct nfs_readres  res;
1274         unsigned long           timestamp;      /* For lease renewal */
1275         int (*read_done_cb) (struct rpc_task *task, struct nfs_read_data *data);
1276         __u64                   mds_offset;
1277         struct nfs_page_array   pages;
1278         struct nfs_client       *ds_clp;        /* pNFS data server */
1279 };
1280
1281 /* used as flag bits in nfs_pgio_header */
1282 enum {
1283         NFS_IOHDR_ERROR = 0,
1284         NFS_IOHDR_EOF,
1285         NFS_IOHDR_REDO,
1286         NFS_IOHDR_NEED_COMMIT,
1287         NFS_IOHDR_NEED_RESCHED,
1288 };
1289
1290 struct nfs_pgio_header {
1291         struct inode            *inode;
1292         struct rpc_cred         *cred;
1293         struct list_head        pages;
1294         struct list_head        rpc_list;
1295         atomic_t                refcnt;
1296         struct nfs_page         *req;
1297         struct nfs_writeverf    *verf;
1298         struct pnfs_layout_segment *lseg;
1299         loff_t                  io_start;
1300         const struct rpc_call_ops *mds_ops;
1301         void (*release) (struct nfs_pgio_header *hdr);
1302         const struct nfs_pgio_completion_ops *completion_ops;
1303         struct nfs_direct_req   *dreq;
1304         void                    *layout_private;
1305         spinlock_t              lock;
1306         /* fields protected by lock */
1307         int                     pnfs_error;
1308         int                     error;          /* merge with pnfs_error */
1309         unsigned long           good_bytes;     /* boundary of good data */
1310         unsigned long           flags;
1311 };
1312
1313 struct nfs_read_header {
1314         struct nfs_pgio_header  header;
1315         struct nfs_read_data    rpc_data;
1316 };
1317
1318 struct nfs_write_data {
1319         struct nfs_pgio_header  *header;
1320         struct list_head        list;
1321         struct rpc_task         task;
1322         struct nfs_fattr        fattr;
1323         struct nfs_writeverf    verf;
1324         struct nfs_writeargs    args;           /* argument struct */
1325         struct nfs_writeres     res;            /* result struct */
1326         unsigned long           timestamp;      /* For lease renewal */
1327         int (*write_done_cb) (struct rpc_task *task, struct nfs_write_data *data);
1328         __u64                   mds_offset;     /* Filelayout dense stripe */
1329         struct nfs_page_array   pages;
1330         struct nfs_client       *ds_clp;        /* pNFS data server */
1331 };
1332
1333 struct nfs_write_header {
1334         struct nfs_pgio_header  header;
1335         struct nfs_write_data   rpc_data;
1336         struct nfs_writeverf    verf;
1337 };
1338
1339 struct nfs_mds_commit_info {
1340         atomic_t rpcs_out;
1341         unsigned long           ncommit;
1342         struct list_head        list;
1343 };
1344
1345 struct nfs_commit_data;
1346 struct nfs_inode;
1347 struct nfs_commit_completion_ops {
1348         void (*error_cleanup) (struct nfs_inode *nfsi);
1349         void (*completion) (struct nfs_commit_data *data);
1350 };
1351
1352 struct nfs_commit_info {
1353         spinlock_t                      *lock;
1354         struct nfs_mds_commit_info      *mds;
1355         struct pnfs_ds_commit_info      *ds;
1356         struct nfs_direct_req           *dreq;  /* O_DIRECT request */
1357         const struct nfs_commit_completion_ops *completion_ops;
1358 };
1359
1360 struct nfs_commit_data {
1361         struct rpc_task         task;
1362         struct inode            *inode;
1363         struct rpc_cred         *cred;
1364         struct nfs_fattr        fattr;
1365         struct nfs_writeverf    verf;
1366         struct list_head        pages;          /* Coalesced requests we wish to flush */
1367         struct list_head        list;           /* lists of struct nfs_write_data */
1368         struct nfs_direct_req   *dreq;          /* O_DIRECT request */
1369         struct nfs_commitargs   args;           /* argument struct */
1370         struct nfs_commitres    res;            /* result struct */
1371         struct nfs_open_context *context;
1372         struct pnfs_layout_segment *lseg;
1373         struct nfs_client       *ds_clp;        /* pNFS data server */
1374         int                     ds_commit_index;
1375         const struct rpc_call_ops *mds_ops;
1376         const struct nfs_commit_completion_ops *completion_ops;
1377         int (*commit_done_cb) (struct rpc_task *task, struct nfs_commit_data *data);
1378 };
1379
1380 struct nfs_pgio_completion_ops {
1381         void    (*error_cleanup)(struct list_head *head);
1382         void    (*init_hdr)(struct nfs_pgio_header *hdr);
1383         void    (*completion)(struct nfs_pgio_header *hdr);
1384 };
1385
1386 struct nfs_unlinkdata {
1387         struct hlist_node list;
1388         struct nfs_removeargs args;
1389         struct nfs_removeres res;
1390         struct inode *dir;
1391         struct rpc_cred *cred;
1392         struct nfs_fattr dir_attr;
1393 };
1394
1395 struct nfs_renamedata {
1396         struct nfs_renameargs   args;
1397         struct nfs_renameres    res;
1398         struct rpc_cred         *cred;
1399         struct inode            *old_dir;
1400         struct dentry           *old_dentry;
1401         struct nfs_fattr        old_fattr;
1402         struct inode            *new_dir;
1403         struct dentry           *new_dentry;
1404         struct nfs_fattr        new_fattr;
1405         void (*complete)(struct rpc_task *, struct nfs_renamedata *);
1406 };
1407
1408 struct nfs_access_entry;
1409 struct nfs_client;
1410 struct rpc_timeout;
1411 struct nfs_subversion;
1412 struct nfs_mount_info;
1413 struct nfs_client_initdata;
1414 struct nfs_pageio_descriptor;
1415
1416 /*
1417  * RPC procedure vector for NFSv2/NFSv3 demuxing
1418  */
1419 struct nfs_rpc_ops {
1420         u32     version;                /* Protocol version */
1421         const struct dentry_operations *dentry_ops;
1422         const struct inode_operations *dir_inode_ops;
1423         const struct inode_operations *file_inode_ops;
1424         const struct file_operations *file_ops;
1425
1426         int     (*getroot) (struct nfs_server *, struct nfs_fh *,
1427                             struct nfs_fsinfo *);
1428         struct vfsmount *(*submount) (struct nfs_server *, struct dentry *,
1429                                       struct nfs_fh *, struct nfs_fattr *);
1430         struct dentry *(*try_mount) (int, const char *, struct nfs_mount_info *,
1431                                      struct nfs_subversion *);
1432         int     (*getattr) (struct nfs_server *, struct nfs_fh *,
1433                             struct nfs_fattr *, struct nfs4_label *);
1434         int     (*setattr) (struct dentry *, struct nfs_fattr *,
1435                             struct iattr *);
1436         int     (*lookup)  (struct inode *, struct qstr *,
1437                             struct nfs_fh *, struct nfs_fattr *,
1438                             struct nfs4_label *);
1439         int     (*access)  (struct inode *, struct nfs_access_entry *);
1440         int     (*readlink)(struct inode *, struct page *, unsigned int,
1441                             unsigned int);
1442         int     (*create)  (struct inode *, struct dentry *,
1443                             struct iattr *, int);
1444         int     (*remove)  (struct inode *, struct qstr *);
1445         void    (*unlink_setup)  (struct rpc_message *, struct inode *dir);
1446         void    (*unlink_rpc_prepare) (struct rpc_task *, struct nfs_unlinkdata *);
1447         int     (*unlink_done) (struct rpc_task *, struct inode *);
1448         void    (*rename_setup)  (struct rpc_message *msg, struct inode *dir);
1449         void    (*rename_rpc_prepare)(struct rpc_task *task, struct nfs_renamedata *);
1450         int     (*rename_done) (struct rpc_task *task, struct inode *old_dir, struct inode *new_dir);
1451         int     (*link)    (struct inode *, struct inode *, struct qstr *);
1452         int     (*symlink) (struct inode *, struct dentry *, struct page *,
1453                             unsigned int, struct iattr *);
1454         int     (*mkdir)   (struct inode *, struct dentry *, struct iattr *);
1455         int     (*rmdir)   (struct inode *, struct qstr *);
1456         int     (*readdir) (struct dentry *, struct rpc_cred *,
1457                             u64, struct page **, unsigned int, int);
1458         int     (*mknod)   (struct inode *, struct dentry *, struct iattr *,
1459                             dev_t);
1460         int     (*statfs)  (struct nfs_server *, struct nfs_fh *,
1461                             struct nfs_fsstat *);
1462         int     (*fsinfo)  (struct nfs_server *, struct nfs_fh *,
1463                             struct nfs_fsinfo *);
1464         int     (*pathconf) (struct nfs_server *, struct nfs_fh *,
1465                              struct nfs_pathconf *);
1466         int     (*set_capabilities)(struct nfs_server *, struct nfs_fh *);
1467         int     (*decode_dirent)(struct xdr_stream *, struct nfs_entry *, int);
1468         void    (*read_setup)   (struct nfs_read_data *, struct rpc_message *);
1469         void    (*read_pageio_init)(struct nfs_pageio_descriptor *, struct inode *,
1470                                     const struct nfs_pgio_completion_ops *);
1471         int     (*read_rpc_prepare)(struct rpc_task *, struct nfs_read_data *);
1472         int     (*read_done)  (struct rpc_task *, struct nfs_read_data *);
1473         void    (*write_setup)  (struct nfs_write_data *, struct rpc_message *);
1474         void    (*write_pageio_init)(struct nfs_pageio_descriptor *, struct inode *, int,
1475                                      const struct nfs_pgio_completion_ops *);
1476         int     (*write_rpc_prepare)(struct rpc_task *, struct nfs_write_data *);
1477         int     (*write_done)  (struct rpc_task *, struct nfs_write_data *);
1478         void    (*commit_setup) (struct nfs_commit_data *, struct rpc_message *);
1479         void    (*commit_rpc_prepare)(struct rpc_task *, struct nfs_commit_data *);
1480         int     (*commit_done) (struct rpc_task *, struct nfs_commit_data *);
1481         int     (*lock)(struct file *, int, struct file_lock *);
1482         int     (*lock_check_bounds)(const struct file_lock *);
1483         void    (*clear_acl_cache)(struct inode *);
1484         void    (*close_context)(struct nfs_open_context *ctx, int);
1485         struct inode * (*open_context) (struct inode *dir,
1486                                 struct nfs_open_context *ctx,
1487                                 int open_flags,
1488                                 struct iattr *iattr,
1489                                 int *);
1490         int (*have_delegation)(struct inode *, fmode_t);
1491         int (*return_delegation)(struct inode *);
1492         struct nfs_client *(*alloc_client) (const struct nfs_client_initdata *);
1493         struct nfs_client *
1494                 (*init_client) (struct nfs_client *, const struct rpc_timeout *,
1495                                 const char *);
1496         void    (*free_client) (struct nfs_client *);
1497         struct nfs_server *(*create_server)(struct nfs_mount_info *, struct nfs_subversion *);
1498         struct nfs_server *(*clone_server)(struct nfs_server *, struct nfs_fh *,
1499                                            struct nfs_fattr *, rpc_authflavor_t);
1500 };
1501
1502 /*
1503  *      NFS_CALL(getattr, inode, (fattr));
1504  * into
1505  *      NFS_PROTO(inode)->getattr(fattr);
1506  */
1507 #define NFS_CALL(op, inode, args)       NFS_PROTO(inode)->op args
1508
1509 /*
1510  * Function vectors etc. for the NFS client
1511  */
1512 extern const struct nfs_rpc_ops nfs_v2_clientops;
1513 extern const struct nfs_rpc_ops nfs_v3_clientops;
1514 extern const struct nfs_rpc_ops nfs_v4_clientops;
1515 extern const struct rpc_version nfs_version2;
1516 extern const struct rpc_version nfs_version3;
1517 extern const struct rpc_version nfs_version4;
1518
1519 extern const struct rpc_version nfsacl_version3;
1520 extern const struct rpc_program nfsacl_program;
1521
1522 #endif