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        bool                    spo_must_allowed;
  63        size_t                  iovlen;
  64        u32                     minorversion;
  65        __be32                  status;
  66        stateid_t       current_stateid;
  67        stateid_t       save_stateid;
  68        /* to indicate current and saved state id presents */
  69        u32             sid_flags;
  70};
  71
  72static inline bool nfsd4_has_session(struct nfsd4_compound_state *cs)
  73{
  74        return cs->slot != NULL;
  75}
  76
  77struct nfsd4_change_info {
  78        u32             atomic;
  79        bool            change_supported;
  80        u32             before_ctime_sec;
  81        u32             before_ctime_nsec;
  82        u64             before_change;
  83        u32             after_ctime_sec;
  84        u32             after_ctime_nsec;
  85        u64             after_change;
  86};
  87
  88struct nfsd4_access {
  89        u32             ac_req_access;      /* request */
  90        u32             ac_supported;       /* response */
  91        u32             ac_resp_access;     /* response */
  92};
  93
  94struct nfsd4_close {
  95        u32             cl_seqid;           /* request */
  96        stateid_t       cl_stateid;         /* request+response */
  97};
  98
  99struct nfsd4_commit {
 100        u64             co_offset;          /* request */
 101        u32             co_count;           /* request */
 102        nfs4_verifier   co_verf;            /* response */
 103};
 104
 105struct nfsd4_create {
 106        u32             cr_namelen;         /* request */
 107        char *          cr_name;            /* request */
 108        u32             cr_type;            /* request */
 109        union {                             /* request */
 110                struct {
 111                        u32 datalen;
 112                        char *data;
 113                } link;   /* NF4LNK */
 114                struct {
 115                        u32 specdata1;
 116                        u32 specdata2;
 117                } dev;    /* NF4BLK, NF4CHR */
 118        } u;
 119        u32             cr_bmval[3];        /* request */
 120        struct iattr    cr_iattr;           /* request */
 121        struct nfsd4_change_info  cr_cinfo; /* response */
 122        struct nfs4_acl *cr_acl;
 123        struct xdr_netobj cr_label;
 124};
 125#define cr_datalen      u.link.datalen
 126#define cr_data         u.link.data
 127#define cr_specdata1    u.dev.specdata1
 128#define cr_specdata2    u.dev.specdata2
 129
 130struct nfsd4_delegreturn {
 131        stateid_t       dr_stateid;
 132};
 133
 134struct nfsd4_getattr {
 135        u32             ga_bmval[3];        /* request */
 136        struct svc_fh   *ga_fhp;            /* response */
 137};
 138
 139struct nfsd4_link {
 140        u32             li_namelen;         /* request */
 141        char *          li_name;            /* request */
 142        struct nfsd4_change_info  li_cinfo; /* response */
 143};
 144
 145struct nfsd4_lock_denied {
 146        clientid_t      ld_clientid;
 147        struct xdr_netobj       ld_owner;
 148        u64             ld_start;
 149        u64             ld_length;
 150        u32             ld_type;
 151};
 152
 153struct nfsd4_lock {
 154        /* request */
 155        u32             lk_type;
 156        u32             lk_reclaim;         /* boolean */
 157        u64             lk_offset;
 158        u64             lk_length;
 159        u32             lk_is_new;
 160        union {
 161                struct {
 162                        u32             open_seqid;
 163                        stateid_t       open_stateid;
 164                        u32             lock_seqid;
 165                        clientid_t      clientid;
 166                        struct xdr_netobj owner;
 167                } new;
 168                struct {
 169                        stateid_t       lock_stateid;
 170                        u32             lock_seqid;
 171                } old;
 172        } v;
 173
 174        /* response */
 175        union {
 176                struct {
 177                        stateid_t               stateid;
 178                } ok;
 179                struct nfsd4_lock_denied        denied;
 180        } u;
 181};
 182#define lk_new_open_seqid       v.new.open_seqid
 183#define lk_new_open_stateid     v.new.open_stateid
 184#define lk_new_lock_seqid       v.new.lock_seqid
 185#define lk_new_clientid         v.new.clientid
 186#define lk_new_owner            v.new.owner
 187#define lk_old_lock_stateid     v.old.lock_stateid
 188#define lk_old_lock_seqid       v.old.lock_seqid
 189
 190#define lk_resp_stateid u.ok.stateid
 191#define lk_denied       u.denied
 192
 193
 194struct nfsd4_lockt {
 195        u32                             lt_type;
 196        clientid_t                      lt_clientid;
 197        struct xdr_netobj               lt_owner;
 198        u64                             lt_offset;
 199        u64                             lt_length;
 200        struct nfsd4_lock_denied        lt_denied;
 201};
 202
 203 
 204struct nfsd4_locku {
 205        u32             lu_type;
 206        u32             lu_seqid;
 207        stateid_t       lu_stateid;
 208        u64             lu_offset;
 209        u64             lu_length;
 210};
 211
 212
 213struct nfsd4_lookup {
 214        u32             lo_len;             /* request */
 215        char *          lo_name;            /* request */
 216};
 217
 218struct nfsd4_putfh {
 219        u32             pf_fhlen;           /* request */
 220        char            *pf_fhval;          /* request */
 221};
 222
 223struct nfsd4_open {
 224        u32             op_claim_type;      /* request */
 225        struct xdr_netobj op_fname;         /* request - everything but CLAIM_PREV */
 226        u32             op_delegate_type;   /* request - CLAIM_PREV only */
 227        stateid_t       op_delegate_stateid; /* request - response */
 228        u32             op_why_no_deleg;    /* response - DELEG_NONE_EXT only */
 229        u32             op_create;          /* request */
 230        u32             op_createmode;      /* request */
 231        u32             op_bmval[3];        /* request */
 232        struct iattr    op_iattr;           /* UNCHECKED4, GUARDED4, EXCLUSIVE4_1 */
 233        nfs4_verifier   op_verf __attribute__((aligned(32)));
 234                                            /* EXCLUSIVE4 */
 235        clientid_t      op_clientid;        /* request */
 236        struct xdr_netobj op_owner;           /* request */
 237        u32             op_seqid;           /* request */
 238        u32             op_share_access;    /* request */
 239        u32             op_share_deny;      /* request */
 240        u32             op_deleg_want;      /* request */
 241        stateid_t       op_stateid;         /* response */
 242        __be32          op_xdr_error;       /* see nfsd4_open_omfg() */
 243        u32             op_recall;          /* recall */
 244        struct nfsd4_change_info  op_cinfo; /* response */
 245        u32             op_rflags;          /* response */
 246        bool            op_truncate;        /* used during processing */
 247        bool            op_created;         /* used during processing */
 248        struct nfs4_openowner *op_openowner; /* used during processing */
 249        struct nfs4_file *op_file;          /* used during processing */
 250        struct nfs4_ol_stateid *op_stp;     /* used during processing */
 251        struct nfs4_clnt_odstate *op_odstate; /* used during processing */
 252        struct nfs4_acl *op_acl;
 253        struct xdr_netobj op_label;
 254};
 255
 256struct nfsd4_open_confirm {
 257        stateid_t       oc_req_stateid          /* request */;
 258        u32             oc_seqid                /* request */;
 259        stateid_t       oc_resp_stateid         /* response */;
 260};
 261
 262struct nfsd4_open_downgrade {
 263        stateid_t       od_stateid;
 264        u32             od_seqid;
 265        u32             od_share_access;        /* request */
 266        u32             od_deleg_want;          /* request */
 267        u32             od_share_deny;          /* request */
 268};
 269
 270
 271struct nfsd4_read {
 272        stateid_t       rd_stateid;         /* request */
 273        u64             rd_offset;          /* request */
 274        u32             rd_length;          /* request */
 275        int             rd_vlen;
 276        struct file     *rd_filp;
 277        bool            rd_tmp_file;
 278        
 279        struct svc_rqst *rd_rqstp;          /* response */
 280        struct svc_fh * rd_fhp;             /* response */
 281};
 282
 283struct nfsd4_readdir {
 284        u64             rd_cookie;          /* request */
 285        nfs4_verifier   rd_verf;            /* request */
 286        u32             rd_dircount;        /* request */
 287        u32             rd_maxcount;        /* request */
 288        u32             rd_bmval[3];        /* request */
 289        struct svc_rqst *rd_rqstp;          /* response */
 290        struct svc_fh * rd_fhp;             /* response */
 291
 292        struct readdir_cd       common;
 293        struct xdr_stream       *xdr;
 294        int                     cookie_offset;
 295};
 296
 297struct nfsd4_release_lockowner {
 298        clientid_t        rl_clientid;
 299        struct xdr_netobj rl_owner;
 300};
 301struct nfsd4_readlink {
 302        struct svc_rqst *rl_rqstp;          /* request */
 303        struct svc_fh * rl_fhp;             /* request */
 304};
 305
 306struct nfsd4_remove {
 307        u32             rm_namelen;         /* request */
 308        char *          rm_name;            /* request */
 309        struct nfsd4_change_info  rm_cinfo; /* response */
 310};
 311
 312struct nfsd4_rename {
 313        u32             rn_snamelen;        /* request */
 314        char *          rn_sname;           /* request */
 315        u32             rn_tnamelen;        /* request */
 316        char *          rn_tname;           /* request */
 317        struct nfsd4_change_info  rn_sinfo; /* response */
 318        struct nfsd4_change_info  rn_tinfo; /* response */
 319};
 320
 321struct nfsd4_secinfo {
 322        u32 si_namelen;                                 /* request */
 323        char *si_name;                                  /* request */
 324        struct svc_export *si_exp;                      /* response */
 325};
 326
 327struct nfsd4_secinfo_no_name {
 328        u32 sin_style;                                  /* request */
 329        struct svc_export *sin_exp;                     /* response */
 330};
 331
 332struct nfsd4_setattr {
 333        stateid_t       sa_stateid;         /* request */
 334        u32             sa_bmval[3];        /* request */
 335        struct iattr    sa_iattr;           /* request */
 336        struct nfs4_acl *sa_acl;
 337        struct xdr_netobj sa_label;
 338};
 339
 340struct nfsd4_setclientid {
 341        nfs4_verifier   se_verf;            /* request */
 342        struct xdr_netobj se_name;
 343        u32             se_callback_prog;   /* request */
 344        u32             se_callback_netid_len;  /* request */
 345        char *          se_callback_netid_val;  /* request */
 346        u32             se_callback_addr_len;   /* request */
 347        char *          se_callback_addr_val;   /* request */
 348        u32             se_callback_ident;  /* request */
 349        clientid_t      se_clientid;        /* response */
 350        nfs4_verifier   se_confirm;         /* response */
 351};
 352
 353struct nfsd4_setclientid_confirm {
 354        clientid_t      sc_clientid;
 355        nfs4_verifier   sc_confirm;
 356};
 357
 358struct nfsd4_saved_compoundargs {
 359        __be32 *p;
 360        __be32 *end;
 361        int pagelen;
 362        struct page **pagelist;
 363};
 364
 365struct nfsd4_test_stateid_id {
 366        __be32                  ts_id_status;
 367        stateid_t               ts_id_stateid;
 368        struct list_head        ts_id_list;
 369};
 370
 371struct nfsd4_test_stateid {
 372        u32             ts_num_ids;
 373        struct list_head ts_stateid_list;
 374};
 375
 376struct nfsd4_free_stateid {
 377        stateid_t       fr_stateid;         /* request */
 378};
 379
 380/* also used for NVERIFY */
 381struct nfsd4_verify {
 382        u32             ve_bmval[3];        /* request */
 383        u32             ve_attrlen;         /* request */
 384        char *          ve_attrval;         /* request */
 385};
 386
 387struct nfsd4_write {
 388        stateid_t       wr_stateid;         /* request */
 389        u64             wr_offset;          /* request */
 390        u32             wr_stable_how;      /* request */
 391        u32             wr_buflen;          /* request */
 392        struct kvec     wr_head;
 393        struct page **  wr_pagelist;        /* request */
 394
 395        u32             wr_bytes_written;   /* response */
 396        u32             wr_how_written;     /* response */
 397        nfs4_verifier   wr_verifier;        /* response */
 398};
 399
 400struct nfsd4_exchange_id {
 401        nfs4_verifier   verifier;
 402        struct xdr_netobj clname;
 403        u32             flags;
 404        clientid_t      clientid;
 405        u32             seqid;
 406        int             spa_how;
 407        u32             spo_must_enforce[3];
 408        u32             spo_must_allow[3];
 409};
 410
 411struct nfsd4_sequence {
 412        struct nfs4_sessionid   sessionid;              /* request/response */
 413        u32                     seqid;                  /* request/response */
 414        u32                     slotid;                 /* request/response */
 415        u32                     maxslots;               /* request/response */
 416        u32                     cachethis;              /* request */
 417#if 0
 418        u32                     target_maxslots;        /* response */
 419#endif /* not yet */
 420        u32                     status_flags;           /* response */
 421};
 422
 423struct nfsd4_destroy_session {
 424        struct nfs4_sessionid   sessionid;
 425};
 426
 427struct nfsd4_destroy_clientid {
 428        clientid_t clientid;
 429};
 430
 431struct nfsd4_reclaim_complete {
 432        u32 rca_one_fs;
 433};
 434
 435struct nfsd4_deviceid {
 436        u64                     fsid_idx;
 437        u32                     generation;
 438        u32                     pad;
 439};
 440
 441struct nfsd4_layout_seg {
 442        u32                     iomode;
 443        u64                     offset;
 444        u64                     length;
 445};
 446
 447struct nfsd4_getdeviceinfo {
 448        struct nfsd4_deviceid   gd_devid;       /* request */
 449        u32                     gd_layout_type; /* request */
 450        u32                     gd_maxcount;    /* request */
 451        u32                     gd_notify_types;/* request - response */
 452        void                    *gd_device;     /* response */
 453};
 454
 455struct nfsd4_layoutget {
 456        u64                     lg_minlength;   /* request */
 457        u32                     lg_signal;      /* request */
 458        u32                     lg_layout_type; /* request */
 459        u32                     lg_maxcount;    /* request */
 460        stateid_t               lg_sid;         /* request/response */
 461        struct nfsd4_layout_seg lg_seg;         /* request/response */
 462        void                    *lg_content;    /* response */
 463};
 464
 465struct nfsd4_layoutcommit {
 466        stateid_t               lc_sid;         /* request */
 467        struct nfsd4_layout_seg lc_seg;         /* request */
 468        u32                     lc_reclaim;     /* request */
 469        u32                     lc_newoffset;   /* request */
 470        u64                     lc_last_wr;     /* request */
 471        struct timespec         lc_mtime;       /* request */
 472        u32                     lc_layout_type; /* request */
 473        u32                     lc_up_len;      /* layout length */
 474        void                    *lc_up_layout;  /* decoded by callback */
 475        u32                     lc_size_chg;    /* boolean for response */
 476        u64                     lc_newsize;     /* response */
 477};
 478
 479struct nfsd4_layoutreturn {
 480        u32                     lr_return_type; /* request */
 481        u32                     lr_layout_type; /* request */
 482        struct nfsd4_layout_seg lr_seg;         /* request */
 483        u32                     lr_reclaim;     /* request */
 484        u32                     lrf_body_len;   /* request */
 485        void                    *lrf_body;      /* request */
 486        stateid_t               lr_sid;         /* request/response */
 487        u32                     lrs_present;    /* response */
 488};
 489
 490struct nfsd4_fallocate {
 491        /* request */
 492        stateid_t       falloc_stateid;
 493        loff_t          falloc_offset;
 494        u64             falloc_length;
 495};
 496
 497struct nfsd4_clone {
 498        /* request */
 499        stateid_t       cl_src_stateid;
 500        stateid_t       cl_dst_stateid;
 501        u64             cl_src_pos;
 502        u64             cl_dst_pos;
 503        u64             cl_count;
 504};
 505
 506struct nfsd42_write_res {
 507        u64                     wr_bytes_written;
 508        u32                     wr_stable_how;
 509        nfs4_verifier           wr_verifier;
 510};
 511
 512struct nfsd4_copy {
 513        /* request */
 514        stateid_t       cp_src_stateid;
 515        stateid_t       cp_dst_stateid;
 516        u64             cp_src_pos;
 517        u64             cp_dst_pos;
 518        u64             cp_count;
 519
 520        /* both */
 521        bool            cp_consecutive;
 522        bool            cp_synchronous;
 523
 524        /* response */
 525        struct nfsd42_write_res cp_res;
 526};
 527
 528struct nfsd4_seek {
 529        /* request */
 530        stateid_t       seek_stateid;
 531        loff_t          seek_offset;
 532        u32             seek_whence;
 533
 534        /* response */
 535        u32             seek_eof;
 536        loff_t          seek_pos;
 537};
 538
 539struct nfsd4_op {
 540        int                                     opnum;
 541        __be32                                  status;
 542        union {
 543                struct nfsd4_access             access;
 544                struct nfsd4_close              close;
 545                struct nfsd4_commit             commit;
 546                struct nfsd4_create             create;
 547                struct nfsd4_delegreturn        delegreturn;
 548                struct nfsd4_getattr            getattr;
 549                struct svc_fh *                 getfh;
 550                struct nfsd4_link               link;
 551                struct nfsd4_lock               lock;
 552                struct nfsd4_lockt              lockt;
 553                struct nfsd4_locku              locku;
 554                struct nfsd4_lookup             lookup;
 555                struct nfsd4_verify             nverify;
 556                struct nfsd4_open               open;
 557                struct nfsd4_open_confirm       open_confirm;
 558                struct nfsd4_open_downgrade     open_downgrade;
 559                struct nfsd4_putfh              putfh;
 560                struct nfsd4_read               read;
 561                struct nfsd4_readdir            readdir;
 562                struct nfsd4_readlink           readlink;
 563                struct nfsd4_remove             remove;
 564                struct nfsd4_rename             rename;
 565                clientid_t                      renew;
 566                struct nfsd4_secinfo            secinfo;
 567                struct nfsd4_setattr            setattr;
 568                struct nfsd4_setclientid        setclientid;
 569                struct nfsd4_setclientid_confirm setclientid_confirm;
 570                struct nfsd4_verify             verify;
 571                struct nfsd4_write              write;
 572                struct nfsd4_release_lockowner  release_lockowner;
 573
 574                /* NFSv4.1 */
 575                struct nfsd4_exchange_id        exchange_id;
 576                struct nfsd4_backchannel_ctl    backchannel_ctl;
 577                struct nfsd4_bind_conn_to_session bind_conn_to_session;
 578                struct nfsd4_create_session     create_session;
 579                struct nfsd4_destroy_session    destroy_session;
 580                struct nfsd4_sequence           sequence;
 581                struct nfsd4_reclaim_complete   reclaim_complete;
 582                struct nfsd4_test_stateid       test_stateid;
 583                struct nfsd4_free_stateid       free_stateid;
 584                struct nfsd4_getdeviceinfo      getdeviceinfo;
 585                struct nfsd4_layoutget          layoutget;
 586                struct nfsd4_layoutcommit       layoutcommit;
 587                struct nfsd4_layoutreturn       layoutreturn;
 588
 589                /* NFSv4.2 */
 590                struct nfsd4_fallocate          allocate;
 591                struct nfsd4_fallocate          deallocate;
 592                struct nfsd4_clone              clone;
 593                struct nfsd4_copy               copy;
 594                struct nfsd4_seek               seek;
 595        } u;
 596        struct nfs4_replay *                    replay;
 597};
 598
 599bool nfsd4_cache_this_op(struct nfsd4_op *);
 600
 601/*
 602 * Memory needed just for the duration of processing one compound:
 603 */
 604struct svcxdr_tmpbuf {
 605        struct svcxdr_tmpbuf *next;
 606        char buf[];
 607};
 608
 609struct nfsd4_compoundargs {
 610        /* scratch variables for XDR decode */
 611        __be32 *                        p;
 612        __be32 *                        end;
 613        struct page **                  pagelist;
 614        int                             pagelen;
 615        __be32                          tmp[8];
 616        __be32 *                        tmpp;
 617        struct svcxdr_tmpbuf            *to_free;
 618
 619        struct svc_rqst                 *rqstp;
 620
 621        u32                             taglen;
 622        char *                          tag;
 623        u32                             minorversion;
 624        u32                             opcnt;
 625        struct nfsd4_op                 *ops;
 626        struct nfsd4_op                 iops[8];
 627        int                             cachetype;
 628};
 629
 630struct nfsd4_compoundres {
 631        /* scratch variables for XDR encode */
 632        struct xdr_stream               xdr;
 633        struct svc_rqst *               rqstp;
 634
 635        u32                             taglen;
 636        char *                          tag;
 637        u32                             opcnt;
 638        __be32 *                        tagp; /* tag, opcount encode location */
 639        struct nfsd4_compound_state     cstate;
 640};
 641
 642static inline bool nfsd4_is_solo_sequence(struct nfsd4_compoundres *resp)
 643{
 644        struct nfsd4_compoundargs *args = resp->rqstp->rq_argp;
 645        return resp->opcnt == 1 && args->ops[0].opnum == OP_SEQUENCE;
 646}
 647
 648static inline bool nfsd4_not_cached(struct nfsd4_compoundres *resp)
 649{
 650        return !(resp->cstate.slot->sl_flags & NFSD4_SLOT_CACHETHIS)
 651                || nfsd4_is_solo_sequence(resp);
 652}
 653
 654static inline bool nfsd4_last_compound_op(struct svc_rqst *rqstp)
 655{
 656        struct nfsd4_compoundres *resp = rqstp->rq_resp;
 657        struct nfsd4_compoundargs *argp = rqstp->rq_argp;
 658
 659        return argp->opcnt == resp->opcnt;
 660}
 661
 662int nfsd4_max_reply(struct svc_rqst *rqstp, struct nfsd4_op *op);
 663void warn_on_nonidempotent_op(struct nfsd4_op *op);
 664
 665#define NFS4_SVC_XDRSIZE                sizeof(struct nfsd4_compoundargs)
 666
 667static inline void
 668set_change_info(struct nfsd4_change_info *cinfo, struct svc_fh *fhp)
 669{
 670        BUG_ON(!fhp->fh_pre_saved);
 671        cinfo->atomic = (u32)fhp->fh_post_saved;
 672        cinfo->change_supported = IS_I_VERSION(d_inode(fhp->fh_dentry));
 673
 674        cinfo->before_change = fhp->fh_pre_change;
 675        cinfo->after_change = fhp->fh_post_change;
 676        cinfo->before_ctime_sec = fhp->fh_pre_ctime.tv_sec;
 677        cinfo->before_ctime_nsec = fhp->fh_pre_ctime.tv_nsec;
 678        cinfo->after_ctime_sec = fhp->fh_post_attr.ctime.tv_sec;
 679        cinfo->after_ctime_nsec = fhp->fh_post_attr.ctime.tv_nsec;
 680
 681}
 682
 683
 684bool nfsd4_mach_creds_match(struct nfs4_client *cl, struct svc_rqst *rqstp);
 685int nfs4svc_encode_voidres(struct svc_rqst *, __be32 *, void *);
 686int nfs4svc_decode_compoundargs(struct svc_rqst *, __be32 *,
 687                struct nfsd4_compoundargs *);
 688int nfs4svc_encode_compoundres(struct svc_rqst *, __be32 *,
 689                struct nfsd4_compoundres *);
 690__be32 nfsd4_check_resp_size(struct nfsd4_compoundres *, u32);
 691void nfsd4_encode_operation(struct nfsd4_compoundres *, struct nfsd4_op *);
 692void nfsd4_encode_replay(struct xdr_stream *xdr, struct nfsd4_op *op);
 693__be32 nfsd4_encode_fattr_to_buf(__be32 **p, int words,
 694                struct svc_fh *fhp, struct svc_export *exp,
 695                struct dentry *dentry,
 696                u32 *bmval, struct svc_rqst *, int ignore_crossmnt);
 697extern __be32 nfsd4_setclientid(struct svc_rqst *rqstp,
 698                struct nfsd4_compound_state *,
 699                struct nfsd4_setclientid *setclid);
 700extern __be32 nfsd4_setclientid_confirm(struct svc_rqst *rqstp,
 701                struct nfsd4_compound_state *,
 702                struct nfsd4_setclientid_confirm *setclientid_confirm);
 703extern __be32 nfsd4_exchange_id(struct svc_rqst *rqstp,
 704                struct nfsd4_compound_state *, struct nfsd4_exchange_id *);
 705extern __be32 nfsd4_backchannel_ctl(struct svc_rqst *, struct nfsd4_compound_state *, struct nfsd4_backchannel_ctl *);
 706extern __be32 nfsd4_bind_conn_to_session(struct svc_rqst *, struct nfsd4_compound_state *, struct nfsd4_bind_conn_to_session *);
 707extern __be32 nfsd4_create_session(struct svc_rqst *,
 708                struct nfsd4_compound_state *,
 709                struct nfsd4_create_session *);
 710extern __be32 nfsd4_sequence(struct svc_rqst *,
 711                struct nfsd4_compound_state *,
 712                struct nfsd4_sequence *);
 713extern void nfsd4_sequence_done(struct nfsd4_compoundres *resp);
 714extern __be32 nfsd4_destroy_session(struct svc_rqst *,
 715                struct nfsd4_compound_state *,
 716                struct nfsd4_destroy_session *);
 717extern __be32 nfsd4_destroy_clientid(struct svc_rqst *, struct nfsd4_compound_state *, struct nfsd4_destroy_clientid *);
 718__be32 nfsd4_reclaim_complete(struct svc_rqst *, struct nfsd4_compound_state *, struct nfsd4_reclaim_complete *);
 719extern __be32 nfsd4_process_open1(struct nfsd4_compound_state *,
 720                struct nfsd4_open *open, struct nfsd_net *nn);
 721extern __be32 nfsd4_process_open2(struct svc_rqst *rqstp,
 722                struct svc_fh *current_fh, struct nfsd4_open *open);
 723extern void nfsd4_cstate_clear_replay(struct nfsd4_compound_state *cstate);
 724extern void nfsd4_cleanup_open_state(struct nfsd4_compound_state *cstate,
 725                struct nfsd4_open *open);
 726extern __be32 nfsd4_open_confirm(struct svc_rqst *rqstp,
 727                struct nfsd4_compound_state *, struct nfsd4_open_confirm *oc);
 728extern __be32 nfsd4_close(struct svc_rqst *rqstp,
 729                struct nfsd4_compound_state *,
 730                struct nfsd4_close *close);
 731extern __be32 nfsd4_open_downgrade(struct svc_rqst *rqstp,
 732                struct nfsd4_compound_state *,
 733                struct nfsd4_open_downgrade *od);
 734extern __be32 nfsd4_lock(struct svc_rqst *rqstp, struct nfsd4_compound_state *,
 735                struct nfsd4_lock *lock);
 736extern __be32 nfsd4_lockt(struct svc_rqst *rqstp,
 737                struct nfsd4_compound_state *,
 738                struct nfsd4_lockt *lockt);
 739extern __be32 nfsd4_locku(struct svc_rqst *rqstp,
 740                struct nfsd4_compound_state *,
 741                struct nfsd4_locku *locku);
 742extern __be32
 743nfsd4_release_lockowner(struct svc_rqst *rqstp,
 744                struct nfsd4_compound_state *,
 745                struct nfsd4_release_lockowner *rlockowner);
 746extern int nfsd4_release_compoundargs(void *rq, __be32 *p, void *resp);
 747extern __be32 nfsd4_delegreturn(struct svc_rqst *rqstp,
 748                struct nfsd4_compound_state *, struct nfsd4_delegreturn *dr);
 749extern __be32 nfsd4_renew(struct svc_rqst *rqstp,
 750                          struct nfsd4_compound_state *, clientid_t *clid);
 751extern __be32 nfsd4_test_stateid(struct svc_rqst *rqstp,
 752                struct nfsd4_compound_state *, struct nfsd4_test_stateid *test_stateid);
 753extern __be32 nfsd4_free_stateid(struct svc_rqst *rqstp,
 754                struct nfsd4_compound_state *, struct nfsd4_free_stateid *free_stateid);
 755extern void nfsd4_bump_seqid(struct nfsd4_compound_state *, __be32 nfserr);
 756
 757#endif
 758
 759/*
 760 * Local variables:
 761 *  c-basic-offset: 8
 762 * End:
 763 */
 764