release/src-rt-6.x/linux/linux-2.6/include/linux/nfsd/xdr4.h

   1 /*
   2  *  include/linux/nfsd/xdr4.h
   3  *
   4  *  Server-side types for NFSv4.
   5  *
   6  *  Copyright (c) 2002 The Regents of the University of Michigan.
   7  *  All rights reserved.
   8  *
   9  *  Kendrick Smith <kmsmith@umich.edu>
  10  *  Andy Adamson   <andros@umich.edu>
  11  *
  12  *  Redistribution and use in source and binary forms, with or without
  13  *  modification, are permitted provided that the following conditions
  14  *  are met:
  15  *
  16  *  1. Redistributions of source code must retain the above copyright
  17  *     notice, this list of conditions and the following disclaimer.
  18  *  2. Redistributions in binary form must reproduce the above copyright
  19  *     notice, this list of conditions and the following disclaimer in the
  20  *     documentation and/or other materials provided with the distribution.
  21  *  3. Neither the name of the University nor the names of its
  22  *     contributors may be used to endorse or promote products derived
  23  *     from this software without specific prior written permission.
  24  *
  25  *  THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
  26  *  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  27  *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  28  *  DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  29  *  FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  30  *  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  31  *  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
  32  *  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  33  *  LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  34  *  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  35  *  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  36  *
  37  */
  38
  39 #ifndef _LINUX_NFSD_XDR4_H
  40 #define _LINUX_NFSD_XDR4_H
  41
  42 #include <linux/nfs4.h>
  43
  44 #define NFSD4_MAX_TAGLEN        128
  45 #define XDR_LEN(n)                     (((n) + 3) & ~3)
  46
  47 struct nfsd4_compound_state {
  48         struct svc_fh current_fh;
  49         struct svc_fh save_fh;
  50         struct nfs4_stateowner *replay_owner;
  51 };
  52
  53 struct nfsd4_change_info {
  54         u32             atomic;
  55         u32             before_ctime_sec;
  56         u32             before_ctime_nsec;
  57         u32             after_ctime_sec;
  58         u32             after_ctime_nsec;
  59 };
  60
  61 struct nfsd4_access {
  62         u32             ac_req_access;      /* request */
  63         u32             ac_supported;       /* response */
  64         u32             ac_resp_access;     /* response */
  65 };
  66
  67 struct nfsd4_close {
  68         u32             cl_seqid;           /* request */
  69         stateid_t       cl_stateid;         /* request+response */
  70         struct nfs4_stateowner * cl_stateowner; /* response */
  71 };
  72
  73 struct nfsd4_commit {
  74         u64             co_offset;          /* request */
  75         u32             co_count;           /* request */
  76         nfs4_verifier   co_verf;            /* response */
  77 };
  78
  79 struct nfsd4_create {
  80         u32             cr_namelen;         /* request */
  81         char *          cr_name;            /* request */
  82         u32             cr_type;            /* request */
  83         union {                             /* request */
  84                 struct {
  85                         u32 namelen;
  86                         char *name;
  87                 } link;   /* NF4LNK */
  88                 struct {
  89                         u32 specdata1;
  90                         u32 specdata2;
  91                 } dev;    /* NF4BLK, NF4CHR */
  92         } u;
  93         u32             cr_bmval[2];        /* request */
  94         struct iattr    cr_iattr;           /* request */
  95         struct nfsd4_change_info  cr_cinfo; /* response */
  96         struct nfs4_acl *cr_acl;
  97 };
  98 #define cr_linklen      u.link.namelen
  99 #define cr_linkname     u.link.name
 100 #define cr_specdata1    u.dev.specdata1
 101 #define cr_specdata2    u.dev.specdata2
 102
 103 struct nfsd4_delegreturn {
 104         stateid_t       dr_stateid;
 105 };
 106
 107 struct nfsd4_getattr {
 108         u32             ga_bmval[2];        /* request */
 109         struct svc_fh   *ga_fhp;            /* response */
 110 };
 111
 112 struct nfsd4_link {
 113         u32             li_namelen;         /* request */
 114         char *          li_name;            /* request */
 115         struct nfsd4_change_info  li_cinfo; /* response */
 116 };
 117
 118 struct nfsd4_lock_denied {
 119         clientid_t      ld_clientid;
 120         struct nfs4_stateowner   *ld_sop;
 121         u64             ld_start;
 122         u64             ld_length;
 123         u32             ld_type;
 124 };
 125
 126 struct nfsd4_lock {
 127         /* request */
 128         u32             lk_type;
 129         u32             lk_reclaim;         /* boolean */
 130         u64             lk_offset;
 131         u64             lk_length;
 132         u32             lk_is_new;
 133         union {
 134                 struct {
 135                         u32             open_seqid;
 136                         stateid_t       open_stateid;
 137                         u32             lock_seqid;
 138                         clientid_t      clientid;
 139                         struct xdr_netobj owner;
 140                 } new;
 141                 struct {
 142                         stateid_t       lock_stateid;
 143                         u32             lock_seqid;
 144                 } old;
 145         } v;
 146
 147         /* response */
 148         union {
 149                 struct {
 150                         stateid_t               stateid;
 151                 } ok;
 152                 struct nfsd4_lock_denied        denied;
 153         } u;
 154         /* The lk_replay_owner is the open owner in the open_to_lock_owner
 155          * case and the lock owner otherwise: */
 156         struct nfs4_stateowner *lk_replay_owner;
 157 };
 158 #define lk_new_open_seqid       v.new.open_seqid
 159 #define lk_new_open_stateid     v.new.open_stateid
 160 #define lk_new_lock_seqid       v.new.lock_seqid
 161 #define lk_new_clientid         v.new.clientid
 162 #define lk_new_owner            v.new.owner
 163 #define lk_old_lock_stateid     v.old.lock_stateid
 164 #define lk_old_lock_seqid       v.old.lock_seqid
 165
 166 #define lk_rflags       u.ok.rflags
 167 #define lk_resp_stateid u.ok.stateid
 168 #define lk_denied       u.denied
 169
 170
 171 struct nfsd4_lockt {
 172         u32                             lt_type;
 173         clientid_t                      lt_clientid;
 174         struct xdr_netobj               lt_owner;
 175         u64                             lt_offset;
 176         u64                             lt_length;
 177         struct nfs4_stateowner *        lt_stateowner;
 178         struct nfsd4_lock_denied        lt_denied;
 179 };
 180
 181
 182 struct nfsd4_locku {
 183         u32             lu_type;
 184         u32             lu_seqid;
 185         stateid_t       lu_stateid;
 186         u64             lu_offset;
 187         u64             lu_length;
 188         struct nfs4_stateowner  *lu_stateowner;
 189 };
 190
 191
 192 struct nfsd4_lookup {
 193         u32             lo_len;             /* request */
 194         char *          lo_name;            /* request */
 195 };
 196
 197 struct nfsd4_putfh {
 198         u32             pf_fhlen;           /* request */
 199         char            *pf_fhval;          /* request */
 200 };
 201
 202 struct nfsd4_open {
 203         u32             op_claim_type;      /* request */
 204         struct xdr_netobj op_fname;         /* request - everything but CLAIM_PREV */
 205         u32             op_delegate_type;   /* request - CLAIM_PREV only */
 206         stateid_t       op_delegate_stateid; /* request - response */
 207         u32             op_create;          /* request */
 208         u32             op_createmode;      /* request */
 209         u32             op_bmval[2];        /* request */
 210         union {                             /* request */
 211                 struct iattr    iattr;                      /* UNCHECKED4,GUARDED4 */
 212                 nfs4_verifier   verf;                                /* EXCLUSIVE4 */
 213         } u;
 214         clientid_t      op_clientid;        /* request */
 215         struct xdr_netobj op_owner;           /* request */
 216         u32             op_seqid;           /* request */
 217         u32             op_share_access;    /* request */
 218         u32             op_share_deny;      /* request */
 219         stateid_t       op_stateid;         /* response */
 220         u32             op_recall;          /* recall */
 221         struct nfsd4_change_info  op_cinfo; /* response */
 222         u32             op_rflags;          /* response */
 223         int             op_truncate;        /* used during processing */
 224         struct nfs4_stateowner *op_stateowner; /* used during processing */
 225         struct nfs4_acl *op_acl;
 226 };
 227 #define op_iattr        u.iattr
 228 #define op_verf         u.verf
 229
 230 struct nfsd4_open_confirm {
 231         stateid_t       oc_req_stateid          /* request */;
 232         u32             oc_seqid                /* request */;
 233         stateid_t       oc_resp_stateid         /* response */;
 234         struct nfs4_stateowner * oc_stateowner; /* response */
 235 };
 236
 237 struct nfsd4_open_downgrade {
 238         stateid_t       od_stateid;
 239         u32             od_seqid;
 240         u32             od_share_access;
 241         u32             od_share_deny;
 242         struct nfs4_stateowner *od_stateowner;
 243 };
 244
 245
 246 struct nfsd4_read {
 247         stateid_t       rd_stateid;         /* request */
 248         u64             rd_offset;          /* request */
 249         u32             rd_length;          /* request */
 250         int             rd_vlen;
 251         struct file     *rd_filp;
 252
 253         struct svc_rqst *rd_rqstp;          /* response */
 254         struct svc_fh * rd_fhp;             /* response */
 255 };
 256
 257 struct nfsd4_readdir {
 258         u64             rd_cookie;          /* request */
 259         nfs4_verifier   rd_verf;            /* request */
 260         u32             rd_dircount;        /* request */
 261         u32             rd_maxcount;        /* request */
 262         u32             rd_bmval[2];        /* request */
 263         struct svc_rqst *rd_rqstp;          /* response */
 264         struct svc_fh * rd_fhp;             /* response */
 265
 266         struct readdir_cd       common;
 267         __be32 *                buffer;
 268         int                     buflen;
 269         __be32 *                offset;
 270 };
 271
 272 struct nfsd4_release_lockowner {
 273         clientid_t        rl_clientid;
 274         struct xdr_netobj rl_owner;
 275 };
 276 struct nfsd4_readlink {
 277         struct svc_rqst *rl_rqstp;          /* request */
 278         struct svc_fh * rl_fhp;             /* request */
 279 };
 280
 281 struct nfsd4_remove {
 282         u32             rm_namelen;         /* request */
 283         char *          rm_name;            /* request */
 284         struct nfsd4_change_info  rm_cinfo; /* response */
 285 };
 286
 287 struct nfsd4_rename {
 288         u32             rn_snamelen;        /* request */
 289         char *          rn_sname;           /* request */
 290         u32             rn_tnamelen;        /* request */
 291         char *          rn_tname;           /* request */
 292         struct nfsd4_change_info  rn_sinfo; /* response */
 293         struct nfsd4_change_info  rn_tinfo; /* response */
 294 };
 295
 296 struct nfsd4_setattr {
 297         stateid_t       sa_stateid;         /* request */
 298         u32             sa_bmval[2];        /* request */
 299         struct iattr    sa_iattr;           /* request */
 300         struct nfs4_acl *sa_acl;
 301 };
 302
 303 struct nfsd4_setclientid {
 304         nfs4_verifier   se_verf;            /* request */
 305         u32             se_namelen;         /* request */
 306         char *          se_name;            /* request */
 307         u32             se_callback_prog;   /* request */
 308         u32             se_callback_netid_len;  /* request */
 309         char *          se_callback_netid_val;  /* request */
 310         u32             se_callback_addr_len;   /* request */
 311         char *          se_callback_addr_val;   /* request */
 312         u32             se_callback_ident;  /* request */
 313         clientid_t      se_clientid;        /* response */
 314         nfs4_verifier   se_confirm;         /* response */
 315 };
 316
 317 struct nfsd4_setclientid_confirm {
 318         clientid_t      sc_clientid;
 319         nfs4_verifier   sc_confirm;
 320 };
 321
 322 /* also used for NVERIFY */
 323 struct nfsd4_verify {
 324         u32             ve_bmval[2];        /* request */
 325         u32             ve_attrlen;         /* request */
 326         char *          ve_attrval;         /* request */
 327 };
 328
 329 struct nfsd4_write {
 330         stateid_t       wr_stateid;         /* request */
 331         u64             wr_offset;          /* request */
 332         u32             wr_stable_how;      /* request */
 333         u32             wr_buflen;          /* request */
 334         int             wr_vlen;
 335
 336         u32             wr_bytes_written;   /* response */
 337         u32             wr_how_written;     /* response */
 338         nfs4_verifier   wr_verifier;        /* response */
 339 };
 340
 341 struct nfsd4_op {
 342         int                                     opnum;
 343         __be32                                  status;
 344         union {
 345                 struct nfsd4_access             access;
 346                 struct nfsd4_close              close;
 347                 struct nfsd4_commit             commit;
 348                 struct nfsd4_create             create;
 349                 struct nfsd4_delegreturn        delegreturn;
 350                 struct nfsd4_getattr            getattr;
 351                 struct svc_fh *                 getfh;
 352                 struct nfsd4_link               link;
 353                 struct nfsd4_lock               lock;
 354                 struct nfsd4_lockt              lockt;
 355                 struct nfsd4_locku              locku;
 356                 struct nfsd4_lookup             lookup;
 357                 struct nfsd4_verify             nverify;
 358                 struct nfsd4_open               open;
 359                 struct nfsd4_open_confirm       open_confirm;
 360                 struct nfsd4_open_downgrade     open_downgrade;
 361                 struct nfsd4_putfh              putfh;
 362                 struct nfsd4_read               read;
 363                 struct nfsd4_readdir            readdir;
 364                 struct nfsd4_readlink           readlink;
 365                 struct nfsd4_remove             remove;
 366                 struct nfsd4_rename             rename;
 367                 clientid_t                      renew;
 368                 struct nfsd4_setattr            setattr;
 369                 struct nfsd4_setclientid        setclientid;
 370                 struct nfsd4_setclientid_confirm setclientid_confirm;
 371                 struct nfsd4_verify             verify;
 372                 struct nfsd4_write              write;
 373                 struct nfsd4_release_lockowner  release_lockowner;
 374         } u;
 375         struct nfs4_replay *                    replay;
 376 };
 377
 378 struct nfsd4_compoundargs {
 379         /* scratch variables for XDR decode */
 380         __be32 *                        p;
 381         __be32 *                        end;
 382         struct page **                  pagelist;
 383         int                             pagelen;
 384         __be32                          tmp[8];
 385         __be32 *                        tmpp;
 386         struct tmpbuf {
 387                 struct tmpbuf *next;
 388                 void (*release)(const void *);
 389                 void *buf;
 390         }                               *to_free;
 391
 392         struct svc_rqst                 *rqstp;
 393
 394         u32                             taglen;
 395         char *                          tag;
 396         u32                             minorversion;
 397         u32                             opcnt;
 398         struct nfsd4_op                 *ops;
 399         struct nfsd4_op                 iops[8];
 400 };
 401
 402 struct nfsd4_compoundres {
 403         /* scratch variables for XDR encode */
 404         __be32 *                        p;
 405         __be32 *                        end;
 406         struct xdr_buf *                xbuf;
 407         struct svc_rqst *               rqstp;
 408
 409         u32                             taglen;
 410         char *                          tag;
 411         u32                             opcnt;
 412         __be32 *                        tagp; /* where to encode tag and  opcount */
 413 };
 414
 415 #define NFS4_SVC_XDRSIZE                sizeof(struct nfsd4_compoundargs)
 416
 417 static inline void
 418 set_change_info(struct nfsd4_change_info *cinfo, struct svc_fh *fhp)
 419 {
 420         BUG_ON(!fhp->fh_pre_saved || !fhp->fh_post_saved);
 421         cinfo->atomic = 1;
 422         cinfo->before_ctime_sec = fhp->fh_pre_ctime.tv_sec;
 423         cinfo->before_ctime_nsec = fhp->fh_pre_ctime.tv_nsec;
 424         cinfo->after_ctime_sec = fhp->fh_post_ctime.tv_sec;
 425         cinfo->after_ctime_nsec = fhp->fh_post_ctime.tv_nsec;
 426 }
 427
 428 int nfs4svc_encode_voidres(struct svc_rqst *, __be32 *, void *);
 429 int nfs4svc_decode_compoundargs(struct svc_rqst *, __be32 *,
 430                 struct nfsd4_compoundargs *);
 431 int nfs4svc_encode_compoundres(struct svc_rqst *, __be32 *,
 432                 struct nfsd4_compoundres *);
 433 void nfsd4_encode_operation(struct nfsd4_compoundres *, struct nfsd4_op *);
 434 void nfsd4_encode_replay(struct nfsd4_compoundres *resp, struct nfsd4_op *op);
 435 __be32 nfsd4_encode_fattr(struct svc_fh *fhp, struct svc_export *exp,
 436                        struct dentry *dentry, __be32 *buffer, int *countp,
 437                        u32 *bmval, struct svc_rqst *);
 438 extern __be32 nfsd4_setclientid(struct svc_rqst *rqstp,
 439                 struct nfsd4_compound_state *,
 440                 struct nfsd4_setclientid *setclid);
 441 extern __be32 nfsd4_setclientid_confirm(struct svc_rqst *rqstp,
 442                 struct nfsd4_compound_state *,
 443                 struct nfsd4_setclientid_confirm *setclientid_confirm);
 444 extern __be32 nfsd4_process_open1(struct nfsd4_open *open);
 445 extern __be32 nfsd4_process_open2(struct svc_rqst *rqstp,
 446                 struct svc_fh *current_fh, struct nfsd4_open *open);
 447 extern __be32 nfsd4_open_confirm(struct svc_rqst *rqstp,
 448                 struct nfsd4_compound_state *, struct nfsd4_open_confirm *oc);
 449 extern __be32 nfsd4_close(struct svc_rqst *rqstp,
 450                 struct nfsd4_compound_state *,
 451                 struct nfsd4_close *close);
 452 extern __be32 nfsd4_open_downgrade(struct svc_rqst *rqstp,
 453                 struct nfsd4_compound_state *,
 454                 struct nfsd4_open_downgrade *od);
 455 extern __be32 nfsd4_lock(struct svc_rqst *rqstp, struct nfsd4_compound_state *,
 456                 struct nfsd4_lock *lock);
 457 extern __be32 nfsd4_lockt(struct svc_rqst *rqstp,
 458                 struct nfsd4_compound_state *,
 459                 struct nfsd4_lockt *lockt);
 460 extern __be32 nfsd4_locku(struct svc_rqst *rqstp,
 461                 struct nfsd4_compound_state *,
 462                 struct nfsd4_locku *locku);
 463 extern __be32
 464 nfsd4_release_lockowner(struct svc_rqst *rqstp,
 465                 struct nfsd4_compound_state *,
 466                 struct nfsd4_release_lockowner *rlockowner);
 467 extern void nfsd4_release_compoundargs(struct nfsd4_compoundargs *);
 468 extern __be32 nfsd4_delegreturn(struct svc_rqst *rqstp,
 469                 struct nfsd4_compound_state *, struct nfsd4_delegreturn *dr);
 470 extern __be32 nfsd4_renew(struct svc_rqst *rqstp,
 471                           struct nfsd4_compound_state *, clientid_t *clid);
 472 #endif
 473
 474 /*
 475  * Local variables:
 476  *  c-basic-offset: 8
 477  * End:
 478  */