linux/include/linux/nfs_xdr.h
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   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/* Forward declaration for NFS v3 */
  18struct nfs4_secinfo_flavors;
  19
  20struct nfs4_string {
  21        unsigned int len;
  22        char *data;
  23};
  24
  25struct nfs_fsid {
  26        uint64_t                major;
  27        uint64_t                minor;
  28};
  29
  30/*
  31 * Helper for checking equality between 2 fsids.
  32 */
  33static inline int nfs_fsid_equal(const struct nfs_fsid *a, const struct nfs_fsid *b)
  34{
  35        return a->major == b->major && a->minor == b->minor;
  36}
  37
  38struct nfs4_threshold {
  39        __u32   bm;
  40        __u32   l_type;
  41        __u64   rd_sz;
  42        __u64   wr_sz;
  43        __u64   rd_io_sz;
  44        __u64   wr_io_sz;
  45};
  46
  47struct nfs_fattr {
  48        unsigned int            valid;          /* which fields are valid */
  49        umode_t                 mode;
  50        __u32                   nlink;
  51        kuid_t                  uid;
  52        kgid_t                  gid;
  53        dev_t                   rdev;
  54        __u64                   size;
  55        union {
  56                struct {
  57                        __u32   blocksize;
  58                        __u32   blocks;
  59                } nfs2;
  60                struct {
  61                        __u64   used;
  62                } nfs3;
  63        } du;
  64        struct nfs_fsid         fsid;
  65        __u64                   fileid;
  66        __u64                   mounted_on_fileid;
  67        struct timespec         atime;
  68        struct timespec         mtime;
  69        struct timespec         ctime;
  70        __u64                   change_attr;    /* NFSv4 change attribute */
  71        __u64                   pre_change_attr;/* pre-op NFSv4 change attribute */
  72        __u64                   pre_size;       /* pre_op_attr.size       */
  73        struct timespec         pre_mtime;      /* pre_op_attr.mtime      */
  74        struct timespec         pre_ctime;      /* pre_op_attr.ctime      */
  75        unsigned long           time_start;
  76        unsigned long           gencount;
  77        struct nfs4_string      *owner_name;
  78        struct nfs4_string      *group_name;
  79        struct nfs4_threshold   *mdsthreshold;  /* pNFS threshold hints */
  80};
  81
  82#define NFS_ATTR_FATTR_TYPE             (1U << 0)
  83#define NFS_ATTR_FATTR_MODE             (1U << 1)
  84#define NFS_ATTR_FATTR_NLINK            (1U << 2)
  85#define NFS_ATTR_FATTR_OWNER            (1U << 3)
  86#define NFS_ATTR_FATTR_GROUP            (1U << 4)
  87#define NFS_ATTR_FATTR_RDEV             (1U << 5)
  88#define NFS_ATTR_FATTR_SIZE             (1U << 6)
  89#define NFS_ATTR_FATTR_PRESIZE          (1U << 7)
  90#define NFS_ATTR_FATTR_BLOCKS_USED      (1U << 8)
  91#define NFS_ATTR_FATTR_SPACE_USED       (1U << 9)
  92#define NFS_ATTR_FATTR_FSID             (1U << 10)
  93#define NFS_ATTR_FATTR_FILEID           (1U << 11)
  94#define NFS_ATTR_FATTR_ATIME            (1U << 12)
  95#define NFS_ATTR_FATTR_MTIME            (1U << 13)
  96#define NFS_ATTR_FATTR_CTIME            (1U << 14)
  97#define NFS_ATTR_FATTR_PREMTIME         (1U << 15)
  98#define NFS_ATTR_FATTR_PRECTIME         (1U << 16)
  99#define NFS_ATTR_FATTR_CHANGE           (1U << 17)
 100#define NFS_ATTR_FATTR_PRECHANGE        (1U << 18)
 101#define NFS_ATTR_FATTR_V4_LOCATIONS     (1U << 19)
 102#define NFS_ATTR_FATTR_V4_REFERRAL      (1U << 20)
 103#define NFS_ATTR_FATTR_MOUNTPOINT       (1U << 21)
 104#define NFS_ATTR_FATTR_MOUNTED_ON_FILEID (1U << 22)
 105#define NFS_ATTR_FATTR_OWNER_NAME       (1U << 23)
 106#define NFS_ATTR_FATTR_GROUP_NAME       (1U << 24)
 107
 108#define NFS_ATTR_FATTR (NFS_ATTR_FATTR_TYPE \
 109                | NFS_ATTR_FATTR_MODE \
 110                | NFS_ATTR_FATTR_NLINK \
 111                | NFS_ATTR_FATTR_OWNER \
 112                | NFS_ATTR_FATTR_GROUP \
 113                | NFS_ATTR_FATTR_RDEV \
 114                | NFS_ATTR_FATTR_SIZE \
 115                | NFS_ATTR_FATTR_FSID \
 116                | NFS_ATTR_FATTR_FILEID \
 117                | NFS_ATTR_FATTR_ATIME \
 118                | NFS_ATTR_FATTR_MTIME \
 119                | NFS_ATTR_FATTR_CTIME \
 120                | NFS_ATTR_FATTR_CHANGE)
 121#define NFS_ATTR_FATTR_V2 (NFS_ATTR_FATTR \
 122                | NFS_ATTR_FATTR_BLOCKS_USED)
 123#define NFS_ATTR_FATTR_V3 (NFS_ATTR_FATTR \
 124                | NFS_ATTR_FATTR_SPACE_USED)
 125#define NFS_ATTR_FATTR_V4 (NFS_ATTR_FATTR \
 126                | NFS_ATTR_FATTR_SPACE_USED)
 127
 128/*
 129 * Info on the file system
 130 */
 131struct nfs_fsinfo {
 132        struct nfs_fattr        *fattr; /* Post-op attributes */
 133        __u32                   rtmax;  /* max.  read transfer size */
 134        __u32                   rtpref; /* pref. read transfer size */
 135        __u32                   rtmult; /* reads should be multiple of this */
 136        __u32                   wtmax;  /* max.  write transfer size */
 137        __u32                   wtpref; /* pref. write transfer size */
 138        __u32                   wtmult; /* writes should be multiple of this */
 139        __u32                   dtpref; /* pref. readdir transfer size */
 140        __u64                   maxfilesize;
 141        struct timespec         time_delta; /* server time granularity */
 142        __u32                   lease_time; /* in seconds */
 143        __u32                   layouttype; /* supported pnfs layout driver */
 144        __u32                   blksize; /* preferred pnfs io block size */
 145};
 146
 147struct nfs_fsstat {
 148        struct nfs_fattr        *fattr; /* Post-op attributes */
 149        __u64                   tbytes; /* total size in bytes */
 150        __u64                   fbytes; /* # of free bytes */
 151        __u64                   abytes; /* # of bytes available to user */
 152        __u64                   tfiles; /* # of files */
 153        __u64                   ffiles; /* # of free files */
 154        __u64                   afiles; /* # of files available to user */
 155};
 156
 157struct nfs2_fsstat {
 158        __u32                   tsize;  /* Server transfer size */
 159        __u32                   bsize;  /* Filesystem block size */
 160        __u32                   blocks; /* No. of "bsize" blocks on filesystem */
 161        __u32                   bfree;  /* No. of free "bsize" blocks */
 162        __u32                   bavail; /* No. of available "bsize" blocks */
 163};
 164
 165struct nfs_pathconf {
 166        struct nfs_fattr        *fattr; /* Post-op attributes */
 167        __u32                   max_link; /* max # of hard links */
 168        __u32                   max_namelen; /* max name length */
 169};
 170
 171struct nfs4_change_info {
 172        u32                     atomic;
 173        u64                     before;
 174        u64                     after;
 175};
 176
 177struct nfs_seqid;
 178
 179/* nfs41 sessions channel attributes */
 180struct nfs4_channel_attrs {
 181        u32                     max_rqst_sz;
 182        u32                     max_resp_sz;
 183        u32                     max_resp_sz_cached;
 184        u32                     max_ops;
 185        u32                     max_reqs;
 186};
 187
 188struct nfs4_slot;
 189struct nfs4_sequence_args {
 190        struct nfs4_slot        *sa_slot;
 191        u8                      sa_cache_this : 1,
 192                                sa_privileged : 1;
 193};
 194
 195struct nfs4_sequence_res {
 196        struct nfs4_slot        *sr_slot;       /* slot used to send request */
 197        unsigned long           sr_timestamp;
 198        int                     sr_status;      /* sequence operation status */
 199        u32                     sr_status_flags;
 200        u32                     sr_highest_slotid;
 201        u32                     sr_target_highest_slotid;
 202};
 203
 204struct nfs4_get_lease_time_args {
 205        struct nfs4_sequence_args       la_seq_args;
 206};
 207
 208struct nfs4_get_lease_time_res {
 209        struct nfs4_sequence_res        lr_seq_res;
 210        struct nfs_fsinfo              *lr_fsinfo;
 211};
 212
 213#define PNFS_LAYOUT_MAXSIZE 4096
 214
 215struct nfs4_layoutdriver_data {
 216        struct page **pages;
 217        __u32 pglen;
 218        __u32 len;
 219};
 220
 221struct pnfs_layout_range {
 222        u32 iomode;
 223        u64 offset;
 224        u64 length;
 225};
 226
 227struct nfs4_layoutget_args {
 228        struct nfs4_sequence_args seq_args;
 229        __u32 type;
 230        struct pnfs_layout_range range;
 231        __u64 minlength;
 232        __u32 maxcount;
 233        struct inode *inode;
 234        struct nfs_open_context *ctx;
 235        nfs4_stateid stateid;
 236        unsigned long timestamp;
 237        struct nfs4_layoutdriver_data layout;
 238};
 239
 240struct nfs4_layoutget_res {
 241        struct nfs4_sequence_res seq_res;
 242        __u32 return_on_close;
 243        struct pnfs_layout_range range;
 244        __u32 type;
 245        nfs4_stateid stateid;
 246        struct nfs4_layoutdriver_data *layoutp;
 247};
 248
 249struct nfs4_layoutget {
 250        struct nfs4_layoutget_args args;
 251        struct nfs4_layoutget_res res;
 252        gfp_t gfp_flags;
 253};
 254
 255struct nfs4_getdevicelist_args {
 256        struct nfs4_sequence_args seq_args;
 257        const struct nfs_fh *fh;
 258        u32 layoutclass;
 259};
 260
 261struct nfs4_getdevicelist_res {
 262        struct nfs4_sequence_res seq_res;
 263        struct pnfs_devicelist *devlist;
 264};
 265
 266struct nfs4_getdeviceinfo_args {
 267        struct nfs4_sequence_args seq_args;
 268        struct pnfs_device *pdev;
 269};
 270
 271struct nfs4_getdeviceinfo_res {
 272        struct nfs4_sequence_res seq_res;
 273        struct pnfs_device *pdev;
 274};
 275
 276struct 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
 284struct 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
 291struct 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
 300struct 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
 308struct nfs4_layoutreturn_res {
 309        struct nfs4_sequence_res seq_res;
 310        u32 lrs_present;
 311        nfs4_stateid stateid;
 312};
 313
 314struct 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
 322struct stateowner_id {
 323        __u64   create_time;
 324        __u32   uniquifier;
 325};
 326
 327/*
 328 * Arguments to the open call.
 329 */
 330struct 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};
 353
 354struct nfs_openres {
 355        struct nfs4_sequence_res        seq_res;
 356        nfs4_stateid            stateid;
 357        struct nfs_fh           fh;
 358        struct nfs4_change_info cinfo;
 359        __u32                   rflags;
 360        struct nfs_fattr *      f_attr;
 361        struct nfs_seqid *      seqid;
 362        const struct nfs_server *server;
 363        fmode_t                 delegation_type;
 364        nfs4_stateid            delegation;
 365        __u32                   do_recall;
 366        __u64                   maxsize;
 367        __u32                   attrset[NFS4_BITMAP_SIZE];
 368        struct nfs4_string      *owner;
 369        struct nfs4_string      *group_owner;
 370        __u32                   access_request;
 371        __u32                   access_supported;
 372        __u32                   access_result;
 373};
 374
 375/*
 376 * Arguments to the open_confirm call.
 377 */
 378struct nfs_open_confirmargs {
 379        const struct nfs_fh *   fh;
 380        nfs4_stateid *          stateid;
 381        struct nfs_seqid *      seqid;
 382};
 383
 384struct nfs_open_confirmres {
 385        nfs4_stateid            stateid;
 386        struct nfs_seqid *      seqid;
 387};
 388
 389/*
 390 * Arguments to the close call.
 391 */
 392struct nfs_closeargs {
 393        struct nfs4_sequence_args       seq_args;
 394        struct nfs_fh *         fh;
 395        nfs4_stateid *          stateid;
 396        struct nfs_seqid *      seqid;
 397        fmode_t                 fmode;
 398        const u32 *             bitmask;
 399};
 400
 401struct nfs_closeres {
 402        struct nfs4_sequence_res        seq_res;
 403        nfs4_stateid            stateid;
 404        struct nfs_fattr *      fattr;
 405        struct nfs_seqid *      seqid;
 406        const struct nfs_server *server;
 407};
 408/*
 409 *  * Arguments to the lock,lockt, and locku call.
 410 *   */
 411struct nfs_lowner {
 412        __u64                   clientid;
 413        __u64                   id;
 414        dev_t                   s_dev;
 415};
 416
 417struct nfs_lock_args {
 418        struct nfs4_sequence_args       seq_args;
 419        struct nfs_fh *         fh;
 420        struct file_lock *      fl;
 421        struct nfs_seqid *      lock_seqid;
 422        nfs4_stateid *          lock_stateid;
 423        struct nfs_seqid *      open_seqid;
 424        nfs4_stateid *          open_stateid;
 425        struct nfs_lowner       lock_owner;
 426        unsigned char           block : 1;
 427        unsigned char           reclaim : 1;
 428        unsigned char           new_lock_owner : 1;
 429};
 430
 431struct nfs_lock_res {
 432        struct nfs4_sequence_res        seq_res;
 433        nfs4_stateid            stateid;
 434        struct nfs_seqid *      lock_seqid;
 435        struct nfs_seqid *      open_seqid;
 436};
 437
 438struct nfs_locku_args {
 439        struct nfs4_sequence_args       seq_args;
 440        struct nfs_fh *         fh;
 441        struct file_lock *      fl;
 442        struct nfs_seqid *      seqid;
 443        nfs4_stateid *          stateid;
 444};
 445
 446struct nfs_locku_res {
 447        struct nfs4_sequence_res        seq_res;
 448        nfs4_stateid            stateid;
 449        struct nfs_seqid *      seqid;
 450};
 451
 452struct nfs_lockt_args {
 453        struct nfs4_sequence_args       seq_args;
 454        struct nfs_fh *         fh;
 455        struct file_lock *      fl;
 456        struct nfs_lowner       lock_owner;
 457};
 458
 459struct nfs_lockt_res {
 460        struct nfs4_sequence_res        seq_res;
 461        struct file_lock *      denied; /* LOCK, LOCKT failed */
 462};
 463
 464struct nfs_release_lockowner_args {
 465        struct nfs_lowner       lock_owner;
 466};
 467
 468struct nfs4_delegreturnargs {
 469        struct nfs4_sequence_args       seq_args;
 470        const struct nfs_fh *fhandle;
 471        const nfs4_stateid *stateid;
 472        const u32 * bitmask;
 473};
 474
 475struct nfs4_delegreturnres {
 476        struct nfs4_sequence_res        seq_res;
 477        struct nfs_fattr * fattr;
 478        const struct nfs_server *server;
 479};
 480
 481/*
 482 * Arguments to the read call.
 483 */
 484struct nfs_readargs {
 485        struct nfs4_sequence_args       seq_args;
 486        struct nfs_fh *         fh;
 487        struct nfs_open_context *context;
 488        struct nfs_lock_context *lock_context;
 489        __u64                   offset;
 490        __u32                   count;
 491        unsigned int            pgbase;
 492        struct page **          pages;
 493};
 494
 495struct nfs_readres {
 496        struct nfs4_sequence_res        seq_res;
 497        struct nfs_fattr *      fattr;
 498        __u32                   count;
 499        int                     eof;
 500};
 501
 502/*
 503 * Arguments to the write call.
 504 */
 505struct nfs_writeargs {
 506        struct nfs4_sequence_args       seq_args;
 507        struct nfs_fh *         fh;
 508        struct nfs_open_context *context;
 509        struct nfs_lock_context *lock_context;
 510        __u64                   offset;
 511        __u32                   count;
 512        enum nfs3_stable_how    stable;
 513        unsigned int            pgbase;
 514        struct page **          pages;
 515        const u32 *             bitmask;
 516};
 517
 518struct nfs_write_verifier {
 519        char                    data[8];
 520};
 521
 522struct nfs_writeverf {
 523        struct nfs_write_verifier verifier;
 524        enum nfs3_stable_how    committed;
 525};
 526
 527struct nfs_writeres {
 528        struct nfs4_sequence_res        seq_res;
 529        struct nfs_fattr *      fattr;
 530        struct nfs_writeverf *  verf;
 531        __u32                   count;
 532        const struct nfs_server *server;
 533};
 534
 535/*
 536 * Arguments to the commit call.
 537 */
 538struct nfs_commitargs {
 539        struct nfs4_sequence_args       seq_args;
 540        struct nfs_fh           *fh;
 541        __u64                   offset;
 542        __u32                   count;
 543        const u32               *bitmask;
 544};
 545
 546struct nfs_commitres {
 547        struct nfs4_sequence_res        seq_res;
 548        struct nfs_fattr        *fattr;
 549        struct nfs_writeverf    *verf;
 550        const struct nfs_server *server;
 551};
 552
 553/*
 554 * Common arguments to the unlink call
 555 */
 556struct nfs_removeargs {
 557        struct nfs4_sequence_args       seq_args;
 558        const struct nfs_fh     *fh;
 559        struct qstr             name;
 560};
 561
 562struct nfs_removeres {
 563        struct nfs4_sequence_res        seq_res;
 564        const struct nfs_server *server;
 565        struct nfs_fattr        *dir_attr;
 566        struct nfs4_change_info cinfo;
 567};
 568
 569/*
 570 * Common arguments to the rename call
 571 */
 572struct nfs_renameargs {
 573        struct nfs4_sequence_args       seq_args;
 574        const struct nfs_fh             *old_dir;
 575        const struct nfs_fh             *new_dir;
 576        const struct qstr               *old_name;
 577        const struct qstr               *new_name;
 578};
 579
 580struct nfs_renameres {
 581        struct nfs4_sequence_res        seq_res;
 582        const struct nfs_server         *server;
 583        struct nfs4_change_info         old_cinfo;
 584        struct nfs_fattr                *old_fattr;
 585        struct nfs4_change_info         new_cinfo;
 586        struct nfs_fattr                *new_fattr;
 587};
 588
 589/*
 590 * Argument struct for decode_entry function
 591 */
 592struct nfs_entry {
 593        __u64                   ino;
 594        __u64                   cookie,
 595                                prev_cookie;
 596        const char *            name;
 597        unsigned int            len;
 598        int                     eof;
 599        struct nfs_fh *         fh;
 600        struct nfs_fattr *      fattr;
 601        unsigned char           d_type;
 602        struct nfs_server *     server;
 603};
 604
 605/*
 606 * The following types are for NFSv2 only.
 607 */
 608struct nfs_sattrargs {
 609        struct nfs_fh *         fh;
 610        struct iattr *          sattr;
 611};
 612
 613struct nfs_diropargs {
 614        struct nfs_fh *         fh;
 615        const char *            name;
 616        unsigned int            len;
 617};
 618
 619struct nfs_createargs {
 620        struct nfs_fh *         fh;
 621        const char *            name;
 622        unsigned int            len;
 623        struct iattr *          sattr;
 624};
 625
 626struct nfs_setattrargs {
 627        struct nfs4_sequence_args       seq_args;
 628        struct nfs_fh *                 fh;
 629        nfs4_stateid                    stateid;
 630        struct iattr *                  iap;
 631        const struct nfs_server *       server; /* Needed for name mapping */
 632        const u32 *                     bitmask;
 633};
 634
 635struct nfs_setaclargs {
 636        struct nfs4_sequence_args       seq_args;
 637        struct nfs_fh *                 fh;
 638        size_t                          acl_len;
 639        unsigned int                    acl_pgbase;
 640        struct page **                  acl_pages;
 641};
 642
 643struct nfs_setaclres {
 644        struct nfs4_sequence_res        seq_res;
 645};
 646
 647struct nfs_getaclargs {
 648        struct nfs4_sequence_args       seq_args;
 649        struct nfs_fh *                 fh;
 650        size_t                          acl_len;
 651        unsigned int                    acl_pgbase;
 652        struct page **                  acl_pages;
 653};
 654
 655/* getxattr ACL interface flags */
 656#define NFS4_ACL_TRUNC          0x0001  /* ACL was truncated */
 657struct nfs_getaclres {
 658        struct nfs4_sequence_res        seq_res;
 659        size_t                          acl_len;
 660        size_t                          acl_data_offset;
 661        int                             acl_flags;
 662        struct page *                   acl_scratch;
 663};
 664
 665struct nfs_setattrres {
 666        struct nfs4_sequence_res        seq_res;
 667        struct nfs_fattr *              fattr;
 668        const struct nfs_server *       server;
 669};
 670
 671struct nfs_linkargs {
 672        struct nfs_fh *         fromfh;
 673        struct nfs_fh *         tofh;
 674        const char *            toname;
 675        unsigned int            tolen;
 676};
 677
 678struct nfs_symlinkargs {
 679        struct nfs_fh *         fromfh;
 680        const char *            fromname;
 681        unsigned int            fromlen;
 682        struct page **          pages;
 683        unsigned int            pathlen;
 684        struct iattr *          sattr;
 685};
 686
 687struct nfs_readdirargs {
 688        struct nfs_fh *         fh;
 689        __u32                   cookie;
 690        unsigned int            count;
 691        struct page **          pages;
 692};
 693
 694struct nfs3_getaclargs {
 695        struct nfs_fh *         fh;
 696        int                     mask;
 697        struct page **          pages;
 698};
 699
 700struct nfs3_setaclargs {
 701        struct inode *          inode;
 702        int                     mask;
 703        struct posix_acl *      acl_access;
 704        struct posix_acl *      acl_default;
 705        size_t                  len;
 706        unsigned int            npages;
 707        struct page **          pages;
 708};
 709
 710struct nfs_diropok {
 711        struct nfs_fh *         fh;
 712        struct nfs_fattr *      fattr;
 713};
 714
 715struct nfs_readlinkargs {
 716        struct nfs_fh *         fh;
 717        unsigned int            pgbase;
 718        unsigned int            pglen;
 719        struct page **          pages;
 720};
 721
 722struct nfs3_sattrargs {
 723        struct nfs_fh *         fh;
 724        struct iattr *          sattr;
 725        unsigned int            guard;
 726        struct timespec         guardtime;
 727};
 728
 729struct nfs3_diropargs {
 730        struct nfs_fh *         fh;
 731        const char *            name;
 732        unsigned int            len;
 733};
 734
 735struct nfs3_accessargs {
 736        struct nfs_fh *         fh;
 737        __u32                   access;
 738};
 739
 740struct nfs3_createargs {
 741        struct nfs_fh *         fh;
 742        const char *            name;
 743        unsigned int            len;
 744        struct iattr *          sattr;
 745        enum nfs3_createmode    createmode;
 746        __be32                  verifier[2];
 747};
 748
 749struct nfs3_mkdirargs {
 750        struct nfs_fh *         fh;
 751        const char *            name;
 752        unsigned int            len;
 753        struct iattr *          sattr;
 754};
 755
 756struct nfs3_symlinkargs {
 757        struct nfs_fh *         fromfh;
 758        const char *            fromname;
 759        unsigned int            fromlen;
 760        struct page **          pages;
 761        unsigned int            pathlen;
 762        struct iattr *          sattr;
 763};
 764
 765struct nfs3_mknodargs {
 766        struct nfs_fh *         fh;
 767        const char *            name;
 768        unsigned int            len;
 769        enum nfs3_ftype         type;
 770        struct iattr *          sattr;
 771        dev_t                   rdev;
 772};
 773
 774struct nfs3_linkargs {
 775        struct nfs_fh *         fromfh;
 776        struct nfs_fh *         tofh;
 777        const char *            toname;
 778        unsigned int            tolen;
 779};
 780
 781struct nfs3_readdirargs {
 782        struct nfs_fh *         fh;
 783        __u64                   cookie;
 784        __be32                  verf[2];
 785        int                     plus;
 786        unsigned int            count;
 787        struct page **          pages;
 788};
 789
 790struct nfs3_diropres {
 791        struct nfs_fattr *      dir_attr;
 792        struct nfs_fh *         fh;
 793        struct nfs_fattr *      fattr;
 794};
 795
 796struct nfs3_accessres {
 797        struct nfs_fattr *      fattr;
 798        __u32                   access;
 799};
 800
 801struct nfs3_readlinkargs {
 802        struct nfs_fh *         fh;
 803        unsigned int            pgbase;
 804        unsigned int            pglen;
 805        struct page **          pages;
 806};
 807
 808struct nfs3_linkres {
 809        struct nfs_fattr *      dir_attr;
 810        struct nfs_fattr *      fattr;
 811};
 812
 813struct nfs3_readdirres {
 814        struct nfs_fattr *      dir_attr;
 815        __be32 *                verf;
 816        int                     plus;
 817};
 818
 819struct nfs3_getaclres {
 820        struct nfs_fattr *      fattr;
 821        int                     mask;
 822        unsigned int            acl_access_count;
 823        unsigned int            acl_default_count;
 824        struct posix_acl *      acl_access;
 825        struct posix_acl *      acl_default;
 826};
 827
 828#if IS_ENABLED(CONFIG_NFS_V4)
 829
 830typedef u64 clientid4;
 831
 832struct nfs4_accessargs {
 833        struct nfs4_sequence_args       seq_args;
 834        const struct nfs_fh *           fh;
 835        const u32 *                     bitmask;
 836        u32                             access;
 837};
 838
 839struct nfs4_accessres {
 840        struct nfs4_sequence_res        seq_res;
 841        const struct nfs_server *       server;
 842        struct nfs_fattr *              fattr;
 843        u32                             supported;
 844        u32                             access;
 845};
 846
 847struct nfs4_create_arg {
 848        struct nfs4_sequence_args       seq_args;
 849        u32                             ftype;
 850        union {
 851                struct {
 852                        struct page **  pages;
 853                        unsigned int    len;
 854                } symlink;   /* NF4LNK */
 855                struct {
 856                        u32             specdata1;
 857                        u32             specdata2;
 858                } device;    /* NF4BLK, NF4CHR */
 859        } u;
 860        const struct qstr *             name;
 861        const struct nfs_server *       server;
 862        const struct iattr *            attrs;
 863        const struct nfs_fh *           dir_fh;
 864        const u32 *                     bitmask;
 865};
 866
 867struct nfs4_create_res {
 868        struct nfs4_sequence_res        seq_res;
 869        const struct nfs_server *       server;
 870        struct nfs_fh *                 fh;
 871        struct nfs_fattr *              fattr;
 872        struct nfs4_change_info         dir_cinfo;
 873};
 874
 875struct nfs4_fsinfo_arg {
 876        struct nfs4_sequence_args       seq_args;
 877        const struct nfs_fh *           fh;
 878        const u32 *                     bitmask;
 879};
 880
 881struct nfs4_fsinfo_res {
 882        struct nfs4_sequence_res        seq_res;
 883        struct nfs_fsinfo              *fsinfo;
 884};
 885
 886struct nfs4_getattr_arg {
 887        struct nfs4_sequence_args       seq_args;
 888        const struct nfs_fh *           fh;
 889        const u32 *                     bitmask;
 890};
 891
 892struct nfs4_getattr_res {
 893        struct nfs4_sequence_res        seq_res;
 894        const struct nfs_server *       server;
 895        struct nfs_fattr *              fattr;
 896};
 897
 898struct nfs4_link_arg {
 899        struct nfs4_sequence_args       seq_args;
 900        const struct nfs_fh *           fh;
 901        const struct nfs_fh *           dir_fh;
 902        const struct qstr *             name;
 903        const u32 *                     bitmask;
 904};
 905
 906struct nfs4_link_res {
 907        struct nfs4_sequence_res        seq_res;
 908        const struct nfs_server *       server;
 909        struct nfs_fattr *              fattr;
 910        struct nfs4_change_info         cinfo;
 911        struct nfs_fattr *              dir_attr;
 912};
 913
 914
 915struct nfs4_lookup_arg {
 916        struct nfs4_sequence_args       seq_args;
 917        const struct nfs_fh *           dir_fh;
 918        const struct qstr *             name;
 919        const u32 *                     bitmask;
 920};
 921
 922struct nfs4_lookup_res {
 923        struct nfs4_sequence_res        seq_res;
 924        const struct nfs_server *       server;
 925        struct nfs_fattr *              fattr;
 926        struct nfs_fh *                 fh;
 927};
 928
 929struct nfs4_lookup_root_arg {
 930        struct nfs4_sequence_args       seq_args;
 931        const u32 *                     bitmask;
 932};
 933
 934struct nfs4_pathconf_arg {
 935        struct nfs4_sequence_args       seq_args;
 936        const struct nfs_fh *           fh;
 937        const u32 *                     bitmask;
 938};
 939
 940struct nfs4_pathconf_res {
 941        struct nfs4_sequence_res        seq_res;
 942        struct nfs_pathconf            *pathconf;
 943};
 944
 945struct nfs4_readdir_arg {
 946        struct nfs4_sequence_args       seq_args;
 947        const struct nfs_fh *           fh;
 948        u64                             cookie;
 949        nfs4_verifier                   verifier;
 950        u32                             count;
 951        struct page **                  pages;  /* zero-copy data */
 952        unsigned int                    pgbase; /* zero-copy data */
 953        const u32 *                     bitmask;
 954        int                             plus;
 955};
 956
 957struct nfs4_readdir_res {
 958        struct nfs4_sequence_res        seq_res;
 959        nfs4_verifier                   verifier;
 960        unsigned int                    pgbase;
 961};
 962
 963struct nfs4_readlink {
 964        struct nfs4_sequence_args       seq_args;
 965        const struct nfs_fh *           fh;
 966        unsigned int                    pgbase;
 967        unsigned int                    pglen;   /* zero-copy data */
 968        struct page **                  pages;   /* zero-copy data */
 969};
 970
 971struct nfs4_readlink_res {
 972        struct nfs4_sequence_res        seq_res;
 973};
 974
 975#define NFS4_SETCLIENTID_NAMELEN        (127)
 976struct nfs4_setclientid {
 977        const nfs4_verifier *           sc_verifier;
 978        unsigned int                    sc_name_len;
 979        char                            sc_name[NFS4_SETCLIENTID_NAMELEN + 1];
 980        u32                             sc_prog;
 981        unsigned int                    sc_netid_len;
 982        char                            sc_netid[RPCBIND_MAXNETIDLEN + 1];
 983        unsigned int                    sc_uaddr_len;
 984        char                            sc_uaddr[RPCBIND_MAXUADDRLEN + 1];
 985        u32                             sc_cb_ident;
 986};
 987
 988struct nfs4_setclientid_res {
 989        u64                             clientid;
 990        nfs4_verifier                   confirm;
 991};
 992
 993struct nfs4_statfs_arg {
 994        struct nfs4_sequence_args       seq_args;
 995        const struct nfs_fh *           fh;
 996        const u32 *                     bitmask;
 997};
 998
 999struct nfs4_statfs_res {
1000        struct nfs4_sequence_res        seq_res;
1001        struct nfs_fsstat              *fsstat;
1002};
1003
1004struct nfs4_server_caps_arg {
1005        struct nfs4_sequence_args       seq_args;
1006        struct nfs_fh                  *fhandle;
1007};
1008
1009struct nfs4_server_caps_res {
1010        struct nfs4_sequence_res        seq_res;
1011        u32                             attr_bitmask[3];
1012        u32                             acl_bitmask;
1013        u32                             has_links;
1014        u32                             has_symlinks;
1015        u32                             fh_expire_type;
1016};
1017
1018#define NFS4_PATHNAME_MAXCOMPONENTS 512
1019struct nfs4_pathname {
1020        unsigned int ncomponents;
1021        struct nfs4_string components[NFS4_PATHNAME_MAXCOMPONENTS];
1022};
1023
1024#define NFS4_FS_LOCATION_MAXSERVERS 10
1025struct nfs4_fs_location {
1026        unsigned int nservers;
1027        struct nfs4_string servers[NFS4_FS_LOCATION_MAXSERVERS];
1028        struct nfs4_pathname rootpath;
1029};
1030
1031#define NFS4_FS_LOCATIONS_MAXENTRIES 10
1032struct nfs4_fs_locations {
1033        struct nfs_fattr fattr;
1034        const struct nfs_server *server;
1035        struct nfs4_pathname fs_path;
1036        int nlocations;
1037        struct nfs4_fs_location locations[NFS4_FS_LOCATIONS_MAXENTRIES];
1038};
1039
1040struct nfs4_fs_locations_arg {
1041        struct nfs4_sequence_args       seq_args;
1042        const struct nfs_fh *dir_fh;
1043        const struct qstr *name;
1044        struct page *page;
1045        const u32 *bitmask;
1046};
1047
1048struct nfs4_fs_locations_res {
1049        struct nfs4_sequence_res        seq_res;
1050        struct nfs4_fs_locations       *fs_locations;
1051};
1052
1053struct nfs4_secinfo_oid {
1054        unsigned int len;
1055        char data[GSS_OID_MAX_LEN];
1056};
1057
1058struct nfs4_secinfo_gss {
1059        struct nfs4_secinfo_oid sec_oid4;
1060        unsigned int qop4;
1061        unsigned int service;
1062};
1063
1064struct nfs4_secinfo_flavor {
1065        unsigned int            flavor;
1066        struct nfs4_secinfo_gss gss;
1067};
1068
1069struct nfs4_secinfo_flavors {
1070        unsigned int num_flavors;
1071        struct nfs4_secinfo_flavor flavors[0];
1072};
1073
1074struct nfs4_secinfo_arg {
1075        struct nfs4_sequence_args       seq_args;
1076        const struct nfs_fh             *dir_fh;
1077        const struct qstr               *name;
1078};
1079
1080struct nfs4_secinfo_res {
1081        struct nfs4_sequence_res        seq_res;
1082        struct nfs4_secinfo_flavors     *flavors;
1083};
1084
1085#endif /* CONFIG_NFS_V4 */
1086
1087struct nfstime4 {
1088        u64     seconds;
1089        u32     nseconds;
1090};
1091
1092#ifdef CONFIG_NFS_V4_1
1093
1094struct pnfs_commit_bucket {
1095        struct list_head written;
1096        struct list_head committing;
1097        struct pnfs_layout_segment *wlseg;
1098        struct pnfs_layout_segment *clseg;
1099};
1100
1101struct pnfs_ds_commit_info {
1102        int nwritten;
1103        int ncommitting;
1104        int nbuckets;
1105        struct pnfs_commit_bucket *buckets;
1106};
1107
1108#define NFS4_EXCHANGE_ID_LEN    (48)
1109struct nfs41_exchange_id_args {
1110        struct nfs_client               *client;
1111        nfs4_verifier                   *verifier;
1112        unsigned int                    id_len;
1113        char                            id[NFS4_EXCHANGE_ID_LEN];
1114        u32                             flags;
1115};
1116
1117struct nfs41_server_owner {
1118        uint64_t                        minor_id;
1119        uint32_t                        major_id_sz;
1120        char                            major_id[NFS4_OPAQUE_LIMIT];
1121};
1122
1123struct nfs41_server_scope {
1124        uint32_t                        server_scope_sz;
1125        char                            server_scope[NFS4_OPAQUE_LIMIT];
1126};
1127
1128struct nfs41_impl_id {
1129        char                            domain[NFS4_OPAQUE_LIMIT + 1];
1130        char                            name[NFS4_OPAQUE_LIMIT + 1];
1131        struct nfstime4                 date;
1132};
1133
1134struct nfs41_bind_conn_to_session_res {
1135        struct nfs4_session             *session;
1136        u32                             dir;
1137        bool                            use_conn_in_rdma_mode;
1138};
1139
1140struct nfs41_exchange_id_res {
1141        u64                             clientid;
1142        u32                             seqid;
1143        u32                             flags;
1144        struct nfs41_server_owner       *server_owner;
1145        struct nfs41_server_scope       *server_scope;
1146        struct nfs41_impl_id            *impl_id;
1147};
1148
1149struct nfs41_create_session_args {
1150        struct nfs_client              *client;
1151        uint32_t                        flags;
1152        uint32_t                        cb_program;
1153        struct nfs4_channel_attrs       fc_attrs;       /* Fore Channel */
1154        struct nfs4_channel_attrs       bc_attrs;       /* Back Channel */
1155};
1156
1157struct nfs41_create_session_res {
1158        struct nfs_client              *client;
1159};
1160
1161struct nfs41_reclaim_complete_args {
1162        struct nfs4_sequence_args       seq_args;
1163        /* In the future extend to include curr_fh for use with migration */
1164        unsigned char                   one_fs:1;
1165};
1166
1167struct nfs41_reclaim_complete_res {
1168        struct nfs4_sequence_res        seq_res;
1169};
1170
1171#define SECINFO_STYLE_CURRENT_FH 0
1172#define SECINFO_STYLE_PARENT 1
1173struct nfs41_secinfo_no_name_args {
1174        struct nfs4_sequence_args       seq_args;
1175        int                             style;
1176};
1177
1178struct nfs41_test_stateid_args {
1179        struct nfs4_sequence_args       seq_args;
1180        nfs4_stateid                    *stateid;
1181};
1182
1183struct nfs41_test_stateid_res {
1184        struct nfs4_sequence_res        seq_res;
1185        unsigned int                    status;
1186};
1187
1188struct nfs41_free_stateid_args {
1189        struct nfs4_sequence_args       seq_args;
1190        nfs4_stateid                    *stateid;
1191};
1192
1193struct nfs41_free_stateid_res {
1194        struct nfs4_sequence_res        seq_res;
1195        unsigned int                    status;
1196};
1197
1198#else
1199
1200struct pnfs_ds_commit_info {
1201};
1202
1203#endif /* CONFIG_NFS_V4_1 */
1204
1205struct nfs_page;
1206
1207#define NFS_PAGEVEC_SIZE        (8U)
1208
1209struct nfs_page_array {
1210        struct page             **pagevec;
1211        unsigned int            npages;         /* Max length of pagevec */
1212        struct page             *page_array[NFS_PAGEVEC_SIZE];
1213};
1214
1215struct nfs_read_data {
1216        struct nfs_pgio_header  *header;
1217        struct list_head        list;
1218        struct rpc_task         task;
1219        struct nfs_fattr        fattr;  /* fattr storage */
1220        struct nfs_readargs args;
1221        struct nfs_readres  res;
1222        unsigned long           timestamp;      /* For lease renewal */
1223        int (*read_done_cb) (struct rpc_task *task, struct nfs_read_data *data);
1224        __u64                   mds_offset;
1225        struct nfs_page_array   pages;
1226        struct nfs_client       *ds_clp;        /* pNFS data server */
1227};
1228
1229/* used as flag bits in nfs_pgio_header */
1230enum {
1231        NFS_IOHDR_ERROR = 0,
1232        NFS_IOHDR_EOF,
1233        NFS_IOHDR_REDO,
1234        NFS_IOHDR_NEED_COMMIT,
1235        NFS_IOHDR_NEED_RESCHED,
1236};
1237
1238struct nfs_pgio_header {
1239        struct inode            *inode;
1240        struct rpc_cred         *cred;
1241        struct list_head        pages;
1242        struct list_head        rpc_list;
1243        atomic_t                refcnt;
1244        struct nfs_page         *req;
1245        struct nfs_writeverf    *verf;
1246        struct pnfs_layout_segment *lseg;
1247        loff_t                  io_start;
1248        const struct rpc_call_ops *mds_ops;
1249        void (*release) (struct nfs_pgio_header *hdr);
1250        const struct nfs_pgio_completion_ops *completion_ops;
1251        struct nfs_direct_req   *dreq;
1252        void                    *layout_private;
1253        spinlock_t              lock;
1254        /* fields protected by lock */
1255        int                     pnfs_error;
1256        int                     error;          /* merge with pnfs_error */
1257        unsigned long           good_bytes;     /* boundary of good data */
1258        unsigned long           flags;
1259};
1260
1261struct nfs_read_header {
1262        struct nfs_pgio_header  header;
1263        struct nfs_read_data    rpc_data;
1264};
1265
1266struct nfs_write_data {
1267        struct nfs_pgio_header  *header;
1268        struct list_head        list;
1269        struct rpc_task         task;
1270        struct nfs_fattr        fattr;
1271        struct nfs_writeverf    verf;
1272        struct nfs_writeargs    args;           /* argument struct */
1273        struct nfs_writeres     res;            /* result struct */
1274        unsigned long           timestamp;      /* For lease renewal */
1275        int (*write_done_cb) (struct rpc_task *task, struct nfs_write_data *data);
1276        __u64                   mds_offset;     /* Filelayout dense stripe */
1277        struct nfs_page_array   pages;
1278        struct nfs_client       *ds_clp;        /* pNFS data server */
1279};
1280
1281struct nfs_write_header {
1282        struct nfs_pgio_header  header;
1283        struct nfs_write_data   rpc_data;
1284        struct nfs_writeverf    verf;
1285};
1286
1287struct nfs_mds_commit_info {
1288        atomic_t rpcs_out;
1289        unsigned long           ncommit;
1290        struct list_head        list;
1291};
1292
1293struct nfs_commit_data;
1294struct nfs_inode;
1295struct nfs_commit_completion_ops {
1296        void (*error_cleanup) (struct nfs_inode *nfsi);
1297        void (*completion) (struct nfs_commit_data *data);
1298};
1299
1300struct nfs_commit_info {
1301        spinlock_t                      *lock;
1302        struct nfs_mds_commit_info      *mds;
1303        struct pnfs_ds_commit_info      *ds;
1304        struct nfs_direct_req           *dreq;  /* O_DIRECT request */
1305        const struct nfs_commit_completion_ops *completion_ops;
1306};
1307
1308struct nfs_commit_data {
1309        struct rpc_task         task;
1310        struct inode            *inode;
1311        struct rpc_cred         *cred;
1312        struct nfs_fattr        fattr;
1313        struct nfs_writeverf    verf;
1314        struct list_head        pages;          /* Coalesced requests we wish to flush */
1315        struct list_head        list;           /* lists of struct nfs_write_data */
1316        struct nfs_direct_req   *dreq;          /* O_DIRECT request */
1317        struct nfs_commitargs   args;           /* argument struct */
1318        struct nfs_commitres    res;            /* result struct */
1319        struct nfs_open_context *context;
1320        struct pnfs_layout_segment *lseg;
1321        struct nfs_client       *ds_clp;        /* pNFS data server */
1322        int                     ds_commit_index;
1323        const struct rpc_call_ops *mds_ops;
1324        const struct nfs_commit_completion_ops *completion_ops;
1325        int (*commit_done_cb) (struct rpc_task *task, struct nfs_commit_data *data);
1326};
1327
1328struct nfs_pgio_completion_ops {
1329        void    (*error_cleanup)(struct list_head *head);
1330        void    (*init_hdr)(struct nfs_pgio_header *hdr);
1331        void    (*completion)(struct nfs_pgio_header *hdr);
1332};
1333
1334struct nfs_unlinkdata {
1335        struct hlist_node list;
1336        struct nfs_removeargs args;
1337        struct nfs_removeres res;
1338        struct inode *dir;
1339        struct rpc_cred *cred;
1340        struct nfs_fattr dir_attr;
1341};
1342
1343struct nfs_renamedata {
1344        struct nfs_renameargs   args;
1345        struct nfs_renameres    res;
1346        struct rpc_cred         *cred;
1347        struct inode            *old_dir;
1348        struct dentry           *old_dentry;
1349        struct nfs_fattr        old_fattr;
1350        struct inode            *new_dir;
1351        struct dentry           *new_dentry;
1352        struct nfs_fattr        new_fattr;
1353};
1354
1355struct nfs_access_entry;
1356struct nfs_client;
1357struct rpc_timeout;
1358struct nfs_subversion;
1359struct nfs_mount_info;
1360struct nfs_client_initdata;
1361struct nfs_pageio_descriptor;
1362
1363/*
1364 * RPC procedure vector for NFSv2/NFSv3 demuxing
1365 */
1366struct nfs_rpc_ops {
1367        u32     version;                /* Protocol version */
1368        const struct dentry_operations *dentry_ops;
1369        const struct inode_operations *dir_inode_ops;
1370        const struct inode_operations *file_inode_ops;
1371        const struct file_operations *file_ops;
1372
1373        int     (*getroot) (struct nfs_server *, struct nfs_fh *,
1374                            struct nfs_fsinfo *);
1375        struct vfsmount *(*submount) (struct nfs_server *, struct dentry *,
1376                                      struct nfs_fh *, struct nfs_fattr *);
1377        struct dentry *(*try_mount) (int, const char *, struct nfs_mount_info *,
1378                                     struct nfs_subversion *);
1379        int     (*getattr) (struct nfs_server *, struct nfs_fh *,
1380                            struct nfs_fattr *);
1381        int     (*setattr) (struct dentry *, struct nfs_fattr *,
1382                            struct iattr *);
1383        int     (*lookup)  (struct inode *, struct qstr *,
1384                            struct nfs_fh *, struct nfs_fattr *);
1385        int     (*access)  (struct inode *, struct nfs_access_entry *);
1386        int     (*readlink)(struct inode *, struct page *, unsigned int,
1387                            unsigned int);
1388        int     (*create)  (struct inode *, struct dentry *,
1389                            struct iattr *, int);
1390        int     (*remove)  (struct inode *, struct qstr *);
1391        void    (*unlink_setup)  (struct rpc_message *, struct inode *dir);
1392        void    (*unlink_rpc_prepare) (struct rpc_task *, struct nfs_unlinkdata *);
1393        int     (*unlink_done) (struct rpc_task *, struct inode *);
1394        int     (*rename)  (struct inode *, struct qstr *,
1395                            struct inode *, struct qstr *);
1396        void    (*rename_setup)  (struct rpc_message *msg, struct inode *dir);
1397        void    (*rename_rpc_prepare)(struct rpc_task *task, struct nfs_renamedata *);
1398        int     (*rename_done) (struct rpc_task *task, struct inode *old_dir, struct inode *new_dir);
1399        int     (*link)    (struct inode *, struct inode *, struct qstr *);
1400        int     (*symlink) (struct inode *, struct dentry *, struct page *,
1401                            unsigned int, struct iattr *);
1402        int     (*mkdir)   (struct inode *, struct dentry *, struct iattr *);
1403        int     (*rmdir)   (struct inode *, struct qstr *);
1404        int     (*readdir) (struct dentry *, struct rpc_cred *,
1405                            u64, struct page **, unsigned int, int);
1406        int     (*mknod)   (struct inode *, struct dentry *, struct iattr *,
1407                            dev_t);
1408        int     (*statfs)  (struct nfs_server *, struct nfs_fh *,
1409                            struct nfs_fsstat *);
1410        int     (*fsinfo)  (struct nfs_server *, struct nfs_fh *,
1411                            struct nfs_fsinfo *);
1412        int     (*pathconf) (struct nfs_server *, struct nfs_fh *,
1413                             struct nfs_pathconf *);
1414        int     (*set_capabilities)(struct nfs_server *, struct nfs_fh *);
1415        int     (*decode_dirent)(struct xdr_stream *, struct nfs_entry *, int);
1416        void    (*read_setup)   (struct nfs_read_data *, struct rpc_message *);
1417        void    (*read_pageio_init)(struct nfs_pageio_descriptor *, struct inode *,
1418                                    const struct nfs_pgio_completion_ops *);
1419        void    (*read_rpc_prepare)(struct rpc_task *, struct nfs_read_data *);
1420        int     (*read_done)  (struct rpc_task *, struct nfs_read_data *);
1421        void    (*write_setup)  (struct nfs_write_data *, struct rpc_message *);
1422        void    (*write_pageio_init)(struct nfs_pageio_descriptor *, struct inode *, int,
1423                                     const struct nfs_pgio_completion_ops *);
1424        void    (*write_rpc_prepare)(struct rpc_task *, struct nfs_write_data *);
1425        int     (*write_done)  (struct rpc_task *, struct nfs_write_data *);
1426        void    (*commit_setup) (struct nfs_commit_data *, struct rpc_message *);
1427        void    (*commit_rpc_prepare)(struct rpc_task *, struct nfs_commit_data *);
1428        int     (*commit_done) (struct rpc_task *, struct nfs_commit_data *);
1429        int     (*lock)(struct file *, int, struct file_lock *);
1430        int     (*lock_check_bounds)(const struct file_lock *);
1431        void    (*clear_acl_cache)(struct inode *);
1432        void    (*close_context)(struct nfs_open_context *ctx, int);
1433        struct inode * (*open_context) (struct inode *dir,
1434                                struct nfs_open_context *ctx,
1435                                int open_flags,
1436                                struct iattr *iattr);
1437        int (*have_delegation)(struct inode *, fmode_t);
1438        int (*return_delegation)(struct inode *);
1439        struct nfs_client *(*alloc_client) (const struct nfs_client_initdata *);
1440        struct nfs_client *
1441                (*init_client) (struct nfs_client *, const struct rpc_timeout *,
1442                                const char *, rpc_authflavor_t);
1443        void    (*free_client) (struct nfs_client *);
1444        struct nfs_server *(*create_server)(struct nfs_mount_info *, struct nfs_subversion *);
1445        struct nfs_server *(*clone_server)(struct nfs_server *, struct nfs_fh *,
1446                                           struct nfs_fattr *, rpc_authflavor_t);
1447};
1448
1449/*
1450 *      NFS_CALL(getattr, inode, (fattr));
1451 * into
1452 *      NFS_PROTO(inode)->getattr(fattr);
1453 */
1454#define NFS_CALL(op, inode, args)       NFS_PROTO(inode)->op args
1455
1456/*
1457 * Function vectors etc. for the NFS client
1458 */
1459extern const struct nfs_rpc_ops nfs_v2_clientops;
1460extern const struct nfs_rpc_ops nfs_v3_clientops;
1461extern const struct nfs_rpc_ops nfs_v4_clientops;
1462extern const struct rpc_version nfs_version2;
1463extern const struct rpc_version nfs_version3;
1464extern const struct rpc_version nfs_version4;
1465
1466extern const struct rpc_version nfsacl_version3;
1467extern const struct rpc_program nfsacl_program;
1468
1469#endif
1470
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