LXR linux/fs/nfsd/xdr4.h

   1/*
   2 *  Server-side types for NFSv4.
   3 *
   4 *  Copyright (c) 2002 The Regents of the University of Michigan.
   5 *  All rights reserved.
   6 *
   7 *  Kendrick Smith <kmsmith@umich.edu>
   8 *  Andy Adamson   <andros@umich.edu>
   9 *
  10 *  Redistribution and use in source and binary forms, with or without
  11 *  modification, are permitted provided that the following conditions
  12 *  are met:
  13 *
  14 *  1. Redistributions of source code must retain the above copyright
  15 *     notice, this list of conditions and the following disclaimer.
  16 *  2. Redistributions in binary form must reproduce the above copyright
  17 *     notice, this list of conditions and the following disclaimer in the
  18 *     documentation and/or other materials provided with the distribution.
  19 *  3. Neither the name of the University nor the names of its
  20 *     contributors may be used to endorse or promote products derived
  21 *     from this software without specific prior written permission.
  22 *
  23 *  THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
  24 *  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  25 *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  26 *  DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  27 *  FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  28 *  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  29 *  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
  30 *  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  31 *  LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  32 *  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  33 *  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  34 *
  35 */
  36
  37#ifndef _LINUX_NFSD_XDR4_H
  38#define _LINUX_NFSD_XDR4_H
  39
  40#include "state.h"
  41#include "nfsd.h"
  42
  43#define NFSD4_MAX_TAGLEN        128
  44#define XDR_LEN(n)                     (((n) + 3) & ~3)
  45
  46#define CURRENT_STATE_ID_FLAG (1<<0)
  47#define SAVED_STATE_ID_FLAG (1<<1)
  48
  49#define SET_STATE_ID(c, f) ((c)->sid_flags |= (f))
  50#define HAS_STATE_ID(c, f) ((c)->sid_flags & (f))
  51#define CLEAR_STATE_ID(c, f) ((c)->sid_flags &= ~(f))
  52
  53struct nfsd4_compound_state {
  54        struct svc_fh           current_fh;
  55        struct svc_fh           save_fh;
  56        struct nfs4_stateowner  *replay_owner;
  57        struct nfs4_client      *clp;
  58        /* For sessions DRC */
  59        struct nfsd4_session    *session;
  60        struct nfsd4_slot       *slot;
  61        int                     data_offset;
  62        size_t                  iovlen;
  63        u32                     minorversion;
  64        __be32                  status;
  65        stateid_t       current_stateid;
  66        stateid_t       save_stateid;
  67        /* to indicate current and saved state id presents */
  68        u32             sid_flags;
  69};
  70
  71static inline bool nfsd4_has_session(struct nfsd4_compound_state *cs)
  72{
  73        return cs->slot != NULL;
  74}
  75
  76struct nfsd4_change_info {
  77        u32             atomic;
  78        bool            change_supported;
  79        u32             before_ctime_sec;
  80        u32             before_ctime_nsec;
  81        u64             before_change;
  82        u32             after_ctime_sec;
  83        u32             after_ctime_nsec;
  84        u64             after_change;
  85};
  86
  87struct nfsd4_access {
  88        u32             ac_req_access;      /* request */
  89        u32             ac_supported;       /* response */
  90        u32             ac_resp_access;     /* response */
  91};
  92
  93struct nfsd4_close {
  94        u32             cl_seqid;           /* request */
  95        stateid_t       cl_stateid;         /* request+response */
  96};
  97
  98struct nfsd4_commit {
  99        u64             co_offset;          /* request */
 100        u32             co_count;           /* request */
 101        nfs4_verifier   co_verf;            /* response */
 102};
 103
 104struct nfsd4_create {
 105        u32             cr_namelen;         /* request */
 106        char *          cr_name;            /* request */
 107        u32             cr_type;            /* request */
 108        union {                             /* request */
 109                struct {
 110                        u32 datalen;
 111                        char *data;
 112                } link;   /* NF4LNK */
 113                struct {
 114                        u32 specdata1;
 115                        u32 specdata2;
 116                } dev;    /* NF4BLK, NF4CHR */
 117        } u;
 118        u32             cr_bmval[3];        /* request */
 119        struct iattr    cr_iattr;           /* request */
 120        struct nfsd4_change_info  cr_cinfo; /* response */
 121        struct nfs4_acl *cr_acl;
 122        struct xdr_netobj cr_label;
 123};
 124#define cr_datalen      u.link.datalen
 125#define cr_data         u.link.data
 126#define cr_specdata1    u.dev.specdata1
 127#define cr_specdata2    u.dev.specdata2
 128
 129struct nfsd4_delegreturn {
 130        stateid_t       dr_stateid;
 131};
 132
 133struct nfsd4_getattr {
 134        u32             ga_bmval[3];        /* request */
 135        struct svc_fh   *ga_fhp;            /* response */
 136};
 137
 138struct nfsd4_link {
 139        u32             li_namelen;         /* request */
 140        char *          li_name;            /* request */
 141        struct nfsd4_change_info  li_cinfo; /* response */
 142};
 143
 144struct nfsd4_lock_denied {
 145        clientid_t      ld_clientid;
 146        struct xdr_netobj       ld_owner;
 147        u64             ld_start;
 148        u64             ld_length;
 149        u32             ld_type;
 150};
 151
 152struct nfsd4_lock {
 153        /* request */
 154        u32             lk_type;
 155        u32             lk_reclaim;         /* boolean */
 156        u64             lk_offset;
 157        u64             lk_length;
 158        u32             lk_is_new;
 159        union {
 160                struct {
 161                        u32             open_seqid;
 162                        stateid_t       open_stateid;
 163                        u32             lock_seqid;
 164                        clientid_t      clientid;
 165                        struct xdr_netobj owner;
 166                } new;
 167                struct {
 168                        stateid_t       lock_stateid;
 169                        u32             lock_seqid;
 170                } old;
 171        } v;
 172
 173        /* response */
 174        union {
 175                struct {
 176                        stateid_t               stateid;
 177                } ok;
 178                struct nfsd4_lock_denied        denied;
 179        } u;
 180};
 181#define lk_new_open_seqid       v.new.open_seqid
 182#define lk_new_open_stateid     v.new.open_stateid
 183#define lk_new_lock_seqid       v.new.lock_seqid
 184#define lk_new_clientid         v.new.clientid
 185#define lk_new_owner            v.new.owner
 186#define lk_old_lock_stateid     v.old.lock_stateid
 187#define lk_old_lock_seqid       v.old.lock_seqid
 188
 189#define lk_resp_stateid u.ok.stateid
 190#define lk_denied       u.denied
 191
 192
 193struct nfsd4_lockt {
 194        u32                             lt_type;
 195        clientid_t                      lt_clientid;
 196        struct xdr_netobj               lt_owner;
 197        u64                             lt_offset;
 198        u64                             lt_length;
 199        struct nfsd4_lock_denied        lt_denied;
 200};
 201
 202 
 203struct nfsd4_locku {
 204        u32             lu_type;
 205        u32             lu_seqid;
 206        stateid_t       lu_stateid;
 207        u64             lu_offset;
 208        u64             lu_length;
 209};
 210
 211
 212struct nfsd4_lookup {
 213        u32             lo_len;             /* request */
 214        char *          lo_name;            /* request */
 215};
 216
 217struct nfsd4_putfh {
 218        u32             pf_fhlen;           /* request */
 219        char            *pf_fhval;          /* request */
 220};
 221
 222struct nfsd4_open {
 223        u32             op_claim_type;      /* request */
 224        struct xdr_netobj op_fname;         /* request - everything but CLAIM_PREV */
 225        u32             op_delegate_type;   /* request - CLAIM_PREV only */
 226        stateid_t       op_delegate_stateid; /* request - response */
 227        u32             op_why_no_deleg;    /* response - DELEG_NONE_EXT only */
 228        u32             op_create;          /* request */
 229        u32             op_createmode;      /* request */
 230        u32             op_bmval[3];        /* request */
 231        struct iattr    op_iattr;           /* UNCHECKED4, GUARDED4, EXCLUSIVE4_1 */
 232        nfs4_verifier   op_verf __attribute__((aligned(32)));
 233                                            /* EXCLUSIVE4 */
 234        clientid_t      op_clientid;        /* request */
 235        struct xdr_netobj op_owner;           /* request */
 236        u32             op_seqid;           /* request */
 237        u32             op_share_access;    /* request */
 238        u32             op_share_deny;      /* request */
 239        u32             op_deleg_want;      /* request */
 240        stateid_t       op_stateid;         /* response */
 241        __be32          op_xdr_error;       /* see nfsd4_open_omfg() */
 242        u32             op_recall;          /* recall */
 243        struct nfsd4_change_info  op_cinfo; /* response */
 244        u32             op_rflags;          /* response */
 245        bool            op_truncate;        /* used during processing */
 246        bool            op_created;         /* used during processing */
 247        struct nfs4_openowner *op_openowner; /* used during processing */
 248        struct nfs4_file *op_file;          /* used during processing */
 249        struct nfs4_ol_stateid *op_stp;     /* used during processing */
 250        struct nfs4_clnt_odstate *op_odstate; /* used during processing */
 251        struct nfs4_acl *op_acl;
 252        struct xdr_netobj op_label;
 253};
 254
 255struct nfsd4_open_confirm {
 256        stateid_t       oc_req_stateid          /* request */;
 257        u32             oc_seqid                /* request */;
 258        stateid_t       oc_resp_stateid         /* response */;
 259};
 260
 261struct nfsd4_open_downgrade {
 262        stateid_t       od_stateid;
 263        u32             od_seqid;
 264        u32             od_share_access;        /* request */
 265        u32             od_deleg_want;          /* request */
 266        u32             od_share_deny;          /* request */
 267};
 268
 269
 270struct nfsd4_read {
 271        stateid_t       rd_stateid;         /* request */
 272        u64             rd_offset;          /* request */
 273        u32             rd_length;          /* request */
 274        int             rd_vlen;
 275        struct file     *rd_filp;
 276        bool            rd_tmp_file;
 277        
 278        struct svc_rqst *rd_rqstp;          /* response */
 279        struct svc_fh * rd_fhp;             /* response */
 280};
 281
 282struct nfsd4_readdir {
 283        u64             rd_cookie;          /* request */
 284        nfs4_verifier   rd_verf;            /* request */
 285        u32             rd_dircount;        /* request */
 286        u32             rd_maxcount;        /* request */
 287        u32             rd_bmval[3];        /* request */
 288        struct svc_rqst *rd_rqstp;          /* response */
 289        struct svc_fh * rd_fhp;             /* response */
 290
 291        struct readdir_cd       common;
 292        struct xdr_stream       *xdr;
 293        int                     cookie_offset;
 294};
 295
 296struct nfsd4_release_lockowner {
 297        clientid_t        rl_clientid;
 298        struct xdr_netobj rl_owner;
 299};
 300struct nfsd4_readlink {
 301        struct svc_rqst *rl_rqstp;          /* request */
 302        struct svc_fh * rl_fhp;             /* request */
 303};
 304
 305struct nfsd4_remove {
 306        u32             rm_namelen;         /* request */
 307        char *          rm_name;            /* request */
 308        struct nfsd4_change_info  rm_cinfo; /* response */
 309};
 310
 311struct nfsd4_rename {
 312        u32             rn_snamelen;        /* request */
 313        char *          rn_sname;           /* request */
 314        u32             rn_tnamelen;        /* request */
 315        char *          rn_tname;           /* request */
 316        struct nfsd4_change_info  rn_sinfo; /* response */
 317        struct nfsd4_change_info  rn_tinfo; /* response */
 318};
 319
 320struct nfsd4_secinfo {
 321        u32 si_namelen;                                 /* request */
 322        char *si_name;                                  /* request */
 323        struct svc_export *si_exp;                      /* response */
 324};
 325
 326struct nfsd4_secinfo_no_name {
 327        u32 sin_style;                                  /* request */
 328        struct svc_export *sin_exp;                     /* response */
 329};
 330
 331struct nfsd4_setattr {
 332        stateid_t       sa_stateid;         /* request */
 333        u32             sa_bmval[3];        /* request */
 334        struct iattr    sa_iattr;           /* request */
 335        struct nfs4_acl *sa_acl;
 336        struct xdr_netobj sa_label;
 337};
 338
 339struct nfsd4_setclientid {
 340        nfs4_verifier   se_verf;            /* request */
 341        struct xdr_netobj se_name;
 342        u32             se_callback_prog;   /* request */
 343        u32             se_callback_netid_len;  /* request */
 344        char *          se_callback_netid_val;  /* request */
 345        u32             se_callback_addr_len;   /* request */
 346        char *          se_callback_addr_val;   /* request */
 347        u32             se_callback_ident;  /* request */
 348        clientid_t      se_clientid;        /* response */
 349        nfs4_verifier   se_confirm;         /* response */
 350};
 351
 352struct nfsd4_setclientid_confirm {
 353        clientid_t      sc_clientid;
 354        nfs4_verifier   sc_confirm;
 355};
 356
 357struct nfsd4_saved_compoundargs {
 358        __be32 *p;
 359        __be32 *end;
 360        int pagelen;
 361        struct page **pagelist;
 362};
 363
 364struct nfsd4_test_stateid_id {
 365        __be32                  ts_id_status;
 366        stateid_t               ts_id_stateid;
 367        struct list_head        ts_id_list;
 368};
 369
 370struct nfsd4_test_stateid {
 371        u32             ts_num_ids;
 372        struct list_head ts_stateid_list;
 373};
 374
 375struct nfsd4_free_stateid {
 376        stateid_t       fr_stateid;         /* request */
 377};
 378
 379/* also used for NVERIFY */
 380struct nfsd4_verify {
 381        u32             ve_bmval[3];        /* request */
 382        u32             ve_attrlen;         /* request */
 383        char *          ve_attrval;         /* request */
 384};
 385
 386struct nfsd4_write {
 387        stateid_t       wr_stateid;         /* request */
 388        u64             wr_offset;          /* request */
 389        u32             wr_stable_how;      /* request */
 390        u32             wr_buflen;          /* request */
 391        struct kvec     wr_head;
 392        struct page **  wr_pagelist;        /* request */
 393
 394        u32             wr_bytes_written;   /* response */
 395        u32             wr_how_written;     /* response */
 396        nfs4_verifier   wr_verifier;        /* response */
 397};
 398
 399struct nfsd4_exchange_id {
 400        nfs4_verifier   verifier;
 401        struct xdr_netobj clname;
 402        u32             flags;
 403        clientid_t      clientid;
 404        u32             seqid;
 405        int             spa_how;
 406};
 407
 408struct nfsd4_sequence {
 409        struct nfs4_sessionid   sessionid;              /* request/response */
 410        u32                     seqid;                  /* request/response */
 411        u32                     slotid;                 /* request/response */
 412        u32                     maxslots;               /* request/response */
 413        u32                     cachethis;              /* request */
 414#if 0
 415        u32                     target_maxslots;        /* response */
 416#endif /* not yet */
 417        u32                     status_flags;           /* response */
 418};
 419
 420struct nfsd4_destroy_session {
 421        struct nfs4_sessionid   sessionid;
 422};
 423
 424struct nfsd4_destroy_clientid {
 425        clientid_t clientid;
 426};
 427
 428struct nfsd4_reclaim_complete {
 429        u32 rca_one_fs;
 430};
 431
 432struct nfsd4_deviceid {
 433        u64                     fsid_idx;
 434        u32                     generation;
 435        u32                     pad;
 436};
 437
 438struct nfsd4_layout_seg {
 439        u32                     iomode;
 440        u64                     offset;
 441        u64                     length;
 442};
 443
 444struct nfsd4_getdeviceinfo {
 445        struct nfsd4_deviceid   gd_devid;       /* request */
 446        u32                     gd_layout_type; /* request */
 447        u32                     gd_maxcount;    /* request */
 448        u32                     gd_notify_types;/* request - response */
 449        void                    *gd_device;     /* response */
 450};
 451
 452struct nfsd4_layoutget {
 453        u64                     lg_minlength;   /* request */
 454        u32                     lg_signal;      /* request */
 455        u32                     lg_layout_type; /* request */
 456        u32                     lg_maxcount;    /* request */
 457        stateid_t               lg_sid;         /* request/response */
 458        struct nfsd4_layout_seg lg_seg;         /* request/response */
 459        void                    *lg_content;    /* response */
 460};
 461
 462struct nfsd4_layoutcommit {
 463        stateid_t               lc_sid;         /* request */
 464        struct nfsd4_layout_seg lc_seg;         /* request */
 465        u32                     lc_reclaim;     /* request */
 466        u32                     lc_newoffset;   /* request */
 467        u64                     lc_last_wr;     /* request */
 468        struct timespec         lc_mtime;       /* request */
 469        u32                     lc_layout_type; /* request */
 470        u32                     lc_up_len;      /* layout length */
 471        void                    *lc_up_layout;  /* decoded by callback */
 472        u32                     lc_size_chg;    /* boolean for response */
 473        u64                     lc_newsize;     /* response */
 474};
 475
 476struct nfsd4_layoutreturn {
 477        u32                     lr_return_type; /* request */
 478        u32                     lr_layout_type; /* request */
 479        struct nfsd4_layout_seg lr_seg;         /* request */
 480        u32                     lr_reclaim;     /* request */
 481        u32                     lrf_body_len;   /* request */
 482        void                    *lrf_body;      /* request */
 483        stateid_t               lr_sid;         /* request/response */
 484        u32                     lrs_present;    /* response */
 485};
 486
 487struct nfsd4_fallocate {
 488        /* request */
 489        stateid_t       falloc_stateid;
 490        loff_t          falloc_offset;
 491        u64             falloc_length;
 492};
 493
 494struct nfsd4_clone {
 495        /* request */
 496        stateid_t       cl_src_stateid;
 497        stateid_t       cl_dst_stateid;
 498        u64             cl_src_pos;
 499        u64             cl_dst_pos;
 500        u64             cl_count;
 501};
 502
 503struct nfsd42_write_res {
 504        u64                     wr_bytes_written;
 505        u32                     wr_stable_how;
 506        nfs4_verifier           wr_verifier;
 507};
 508
 509struct nfsd4_copy {
 510        /* request */
 511        stateid_t       cp_src_stateid;
 512        stateid_t       cp_dst_stateid;
 513        u64             cp_src_pos;
 514        u64             cp_dst_pos;
 515        u64             cp_count;
 516
 517        /* both */
 518        bool            cp_consecutive;
 519        bool            cp_synchronous;
 520
 521        /* response */
 522        struct nfsd42_write_res cp_res;
 523};
 524
 525struct nfsd4_seek {
 526        /* request */
 527        stateid_t       seek_stateid;
 528        loff_t          seek_offset;
 529        u32             seek_whence;
 530
 531        /* response */
 532        u32             seek_eof;
 533        loff_t          seek_pos;
 534};
 535
 536struct nfsd4_op {
 537        int                                     opnum;
 538        __be32                                  status;
 539        union {
 540                struct nfsd4_access             access;
 541                struct nfsd4_close              close;
 542                struct nfsd4_commit             commit;
 543                struct nfsd4_create             create;
 544                struct nfsd4_delegreturn        delegreturn;
 545                struct nfsd4_getattr            getattr;
 546                struct svc_fh *                 getfh;
 547                struct nfsd4_link               link;
 548                struct nfsd4_lock               lock;
 549                struct nfsd4_lockt              lockt;
 550                struct nfsd4_locku              locku;
 551                struct nfsd4_lookup             lookup;
 552                struct nfsd4_verify             nverify;
 553                struct nfsd4_open               open;
 554                struct nfsd4_open_confirm       open_confirm;
 555                struct nfsd4_open_downgrade     open_downgrade;
 556                struct nfsd4_putfh              putfh;
 557                struct nfsd4_read               read;
 558                struct nfsd4_readdir            readdir;
 559                struct nfsd4_readlink           readlink;
 560                struct nfsd4_remove             remove;
 561                struct nfsd4_rename             rename;
 562                clientid_t                      renew;
 563                struct nfsd4_secinfo            secinfo;
 564                struct nfsd4_setattr            setattr;
 565                struct nfsd4_setclientid        setclientid;
 566                struct nfsd4_setclientid_confirm setclientid_confirm;
 567                struct nfsd4_verify             verify;
 568                struct nfsd4_write              write;
 569                struct nfsd4_release_lockowner  release_lockowner;
 570
 571                /* NFSv4.1 */
 572                struct nfsd4_exchange_id        exchange_id;
 573                struct nfsd4_backchannel_ctl    backchannel_ctl;
 574                struct nfsd4_bind_conn_to_session bind_conn_to_session;
 575                struct nfsd4_create_session     create_session;
 576                struct nfsd4_destroy_session    destroy_session;
 577                struct nfsd4_sequence           sequence;
 578                struct nfsd4_reclaim_complete   reclaim_complete;
 579                struct nfsd4_test_stateid       test_stateid;
 580                struct nfsd4_free_stateid       free_stateid;
 581                struct nfsd4_getdeviceinfo      getdeviceinfo;
 582                struct nfsd4_layoutget          layoutget;
 583                struct nfsd4_layoutcommit       layoutcommit;
 584                struct nfsd4_layoutreturn       layoutreturn;
 585
 586                /* NFSv4.2 */
 587                struct nfsd4_fallocate          allocate;
 588                struct nfsd4_fallocate          deallocate;
 589                struct nfsd4_clone              clone;
 590                struct nfsd4_copy               copy;
 591                struct nfsd4_seek               seek;
 592        } u;
 593        struct nfs4_replay *                    replay;
 594};
 595
 596bool nfsd4_cache_this_op(struct nfsd4_op *);
 597
 598/*
 599 * Memory needed just for the duration of processing one compound:
 600 */
 601struct svcxdr_tmpbuf {
 602        struct svcxdr_tmpbuf *next;
 603        char buf[];
 604};
 605
 606struct nfsd4_compoundargs {
 607        /* scratch variables for XDR decode */
 608        __be32 *                        p;
 609        __be32 *                        end;
 610        struct page **                  pagelist;
 611        int                             pagelen;
 612        bool                            tail;
 613        __be32                          tmp[8];
 614        __be32 *                        tmpp;
 615        struct svcxdr_tmpbuf            *to_free;
 616
 617        struct svc_rqst                 *rqstp;
 618
 619        u32                             taglen;
 620        char *                          tag;
 621        u32                             minorversion;
 622        u32                             opcnt;
 623        struct nfsd4_op                 *ops;
 624        struct nfsd4_op                 iops[8];
 625        int                             cachetype;
 626};
 627
 628struct nfsd4_compoundres {
 629        /* scratch variables for XDR encode */
 630        struct xdr_stream               xdr;
 631        struct svc_rqst *               rqstp;
 632
 633        u32                             taglen;
 634        char *                          tag;
 635        u32                             opcnt;
 636        __be32 *                        tagp; /* tag, opcount encode location */
 637        struct nfsd4_compound_state     cstate;
 638};
 639
 640static inline bool nfsd4_is_solo_sequence(struct nfsd4_compoundres *resp)
 641{
 642        struct nfsd4_compoundargs *args = resp->rqstp->rq_argp;
 643        return resp->opcnt == 1 && args->ops[0].opnum == OP_SEQUENCE;
 644}
 645
 646static inline bool nfsd4_not_cached(struct nfsd4_compoundres *resp)
 647{
 648        return !(resp->cstate.slot->sl_flags & NFSD4_SLOT_CACHETHIS)
 649                || nfsd4_is_solo_sequence(resp);
 650}
 651
 652static inline bool nfsd4_last_compound_op(struct svc_rqst *rqstp)
 653{
 654        struct nfsd4_compoundres *resp = rqstp->rq_resp;
 655        struct nfsd4_compoundargs *argp = rqstp->rq_argp;
 656
 657        return argp->opcnt == resp->opcnt;
 658}
 659
 660int nfsd4_max_reply(struct svc_rqst *rqstp, struct nfsd4_op *op);
 661void warn_on_nonidempotent_op(struct nfsd4_op *op);
 662
 663#define NFS4_SVC_XDRSIZE                sizeof(struct nfsd4_compoundargs)
 664
 665static inline void
 666set_change_info(struct nfsd4_change_info *cinfo, struct svc_fh *fhp)
 667{
 668        BUG_ON(!fhp->fh_pre_saved);
 669        cinfo->atomic = (u32)fhp->fh_post_saved;
 670        cinfo->change_supported = IS_I_VERSION(fhp->fh_dentry->d_inode);
 671
 672        cinfo->before_change = fhp->fh_pre_change;
 673        cinfo->after_change = fhp->fh_post_change;
 674        cinfo->before_ctime_sec = fhp->fh_pre_ctime.tv_sec;
 675        cinfo->before_ctime_nsec = fhp->fh_pre_ctime.tv_nsec;
 676        cinfo->after_ctime_sec = fhp->fh_post_attr.ctime.tv_sec;
 677        cinfo->after_ctime_nsec = fhp->fh_post_attr.ctime.tv_nsec;
 678
 679}
 680
 681int nfs4svc_encode_voidres(struct svc_rqst *, __be32 *, void *);
 682int nfs4svc_decode_compoundargs(struct svc_rqst *, __be32 *,
 683                struct nfsd4_compoundargs *);
 684int nfs4svc_encode_compoundres(struct svc_rqst *, __be32 *,
 685                struct nfsd4_compoundres *);
 686__be32 nfsd4_check_resp_size(struct nfsd4_compoundres *, u32);
 687void nfsd4_encode_operation(struct nfsd4_compoundres *, struct nfsd4_op *);
 688void nfsd4_encode_replay(struct xdr_stream *xdr, struct nfsd4_op *op);
 689__be32 nfsd4_encode_fattr_to_buf(__be32 **p, int words,
 690                struct svc_fh *fhp, struct svc_export *exp,
 691                struct dentry *dentry,
 692                u32 *bmval, struct svc_rqst *, int ignore_crossmnt);
 693extern __be32 nfsd4_setclientid(struct svc_rqst *rqstp,
 694                struct nfsd4_compound_state *,
 695                struct nfsd4_setclientid *setclid);
 696extern __be32 nfsd4_setclientid_confirm(struct svc_rqst *rqstp,
 697                struct nfsd4_compound_state *,
 698                struct nfsd4_setclientid_confirm *setclientid_confirm);
 699extern __be32 nfsd4_exchange_id(struct svc_rqst *rqstp,
 700                struct nfsd4_compound_state *, struct nfsd4_exchange_id *);
 701extern __be32 nfsd4_backchannel_ctl(struct svc_rqst *, struct nfsd4_compound_state *, struct nfsd4_backchannel_ctl *);
 702extern __be32 nfsd4_bind_conn_to_session(struct svc_rqst *, struct nfsd4_compound_state *, struct nfsd4_bind_conn_to_session *);
 703extern __be32 nfsd4_create_session(struct svc_rqst *,
 704                struct nfsd4_compound_state *,
 705                struct nfsd4_create_session *);
 706extern __be32 nfsd4_sequence(struct svc_rqst *,
 707                struct nfsd4_compound_state *,
 708                struct nfsd4_sequence *);
 709extern void nfsd4_sequence_done(struct nfsd4_compoundres *resp);
 710extern __be32 nfsd4_destroy_session(struct svc_rqst *,
 711                struct nfsd4_compound_state *,
 712                struct nfsd4_destroy_session *);
 713extern __be32 nfsd4_destroy_clientid(struct svc_rqst *, struct nfsd4_compound_state *, struct nfsd4_destroy_clientid *);
 714__be32 nfsd4_reclaim_complete(struct svc_rqst *, struct nfsd4_compound_state *, struct nfsd4_reclaim_complete *);
 715extern __be32 nfsd4_process_open1(struct nfsd4_compound_state *,
 716                struct nfsd4_open *open, struct nfsd_net *nn);
 717extern __be32 nfsd4_process_open2(struct svc_rqst *rqstp,
 718                struct svc_fh *current_fh, struct nfsd4_open *open);
 719extern void nfsd4_cstate_clear_replay(struct nfsd4_compound_state *cstate);
 720extern void nfsd4_cleanup_open_state(struct nfsd4_compound_state *cstate,
 721                struct nfsd4_open *open);
 722extern __be32 nfsd4_open_confirm(struct svc_rqst *rqstp,
 723                struct nfsd4_compound_state *, struct nfsd4_open_confirm *oc);
 724extern __be32 nfsd4_close(struct svc_rqst *rqstp,
 725                struct nfsd4_compound_state *,
 726                struct nfsd4_close *close);
 727extern __be32 nfsd4_open_downgrade(struct svc_rqst *rqstp,
 728                struct nfsd4_compound_state *,
 729                struct nfsd4_open_downgrade *od);
 730extern __be32 nfsd4_lock(struct svc_rqst *rqstp, struct nfsd4_compound_state *,
 731                struct nfsd4_lock *lock);
 732extern __be32 nfsd4_lockt(struct svc_rqst *rqstp,
 733                struct nfsd4_compound_state *,
 734                struct nfsd4_lockt *lockt);
 735extern __be32 nfsd4_locku(struct svc_rqst *rqstp,
 736                struct nfsd4_compound_state *,
 737                struct nfsd4_locku *locku);
 738extern __be32
 739nfsd4_release_lockowner(struct svc_rqst *rqstp,
 740                struct nfsd4_compound_state *,
 741                struct nfsd4_release_lockowner *rlockowner);
 742extern int nfsd4_release_compoundargs(void *rq, __be32 *p, void *resp);
 743extern __be32 nfsd4_delegreturn(struct svc_rqst *rqstp,
 744                struct nfsd4_compound_state *, struct nfsd4_delegreturn *dr);
 745extern __be32 nfsd4_renew(struct svc_rqst *rqstp,
 746                          struct nfsd4_compound_state *, clientid_t *clid);
 747extern __be32 nfsd4_test_stateid(struct svc_rqst *rqstp,
 748                struct nfsd4_compound_state *, struct nfsd4_test_stateid *test_stateid);
 749extern __be32 nfsd4_free_stateid(struct svc_rqst *rqstp,
 750                struct nfsd4_compound_state *, struct nfsd4_free_stateid *free_stateid);
 751extern void nfsd4_bump_seqid(struct nfsd4_compound_state *, __be32 nfserr);
 752
 753#endif
 754
 755/*
 756 * Local variables:
 757 *  c-basic-offset: 8
 758 * End:
 759 */
 760