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   1 /*
   2  *  fs/nfsd/nfs4proc.c
   3  *
   4  *  Server-side procedures 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 #include <linux/param.h>
  39 #include <linux/major.h>
  40 #include <linux/slab.h>
  41 #include <linux/file.h>
  42
  43 #include <linux/sunrpc/svc.h>
  44 #include <linux/nfsd/nfsd.h>
  45 #include <linux/nfsd/cache.h>
  46 #include <linux/nfs4.h>
  47 #include <linux/nfsd/state.h>
  48 #include <linux/nfsd/xdr4.h>
  49 #include <linux/nfs4_acl.h>
  50 #include <linux/sunrpc/gss_api.h>
  51
  52 #define NFSDDBG_FACILITY                NFSDDBG_PROC
  53
  54 static inline void
  55 fh_dup2(struct svc_fh *dst, struct svc_fh *src)
  56 {
  57         fh_put(dst);
  58         dget(src->fh_dentry);
  59         if (src->fh_export)
  60                 cache_get(&src->fh_export->h);
  61         *dst = *src;
  62 }
  63
  64 static __be32
  65 do_open_permission(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open, int accmode)
  66 {
  67         __be32 status;
  68
  69         if (open->op_truncate &&
  70                 !(open->op_share_access & NFS4_SHARE_ACCESS_WRITE))
  71                 return nfserr_inval;
  72
  73         if (open->op_share_access & NFS4_SHARE_ACCESS_READ)
  74                 accmode |= NFSD_MAY_READ;
  75         if (open->op_share_access & NFS4_SHARE_ACCESS_WRITE)
  76                 accmode |= (NFSD_MAY_WRITE | NFSD_MAY_TRUNC);
  77         if (open->op_share_deny & NFS4_SHARE_DENY_WRITE)
  78                 accmode |= NFSD_MAY_WRITE;
  79
  80         status = fh_verify(rqstp, current_fh, S_IFREG, accmode);
  81
  82         return status;
  83 }
  84
  85 static __be32
  86 do_open_lookup(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open)
  87 {
  88         struct svc_fh resfh;
  89         __be32 status;
  90         int created = 0;
  91
  92         fh_init(&resfh, NFS4_FHSIZE);
  93         open->op_truncate = 0;
  94
  95         if (open->op_create) {
  96                 /*
  97                  * Note: create modes (UNCHECKED,GUARDED...) are the same
  98                  * in NFSv4 as in v3.
  99                  */
 100                 status = nfsd_create_v3(rqstp, current_fh, open->op_fname.data,
 101                                         open->op_fname.len, &open->op_iattr,
 102                                         &resfh, open->op_createmode,
 103                                         (u32 *)open->op_verf.data,
 104                                         &open->op_truncate, &created);
 105
 106                 /*
 107                  * Following rfc 3530 14.2.16, use the returned bitmask
 108                  * to indicate which attributes we used to store the
 109                  * verifier:
 110                  */
 111                 if (open->op_createmode == NFS4_CREATE_EXCLUSIVE && status == 0)
 112                         open->op_bmval[1] = (FATTR4_WORD1_TIME_ACCESS |
 113                                                 FATTR4_WORD1_TIME_MODIFY);
 114         } else {
 115                 status = nfsd_lookup(rqstp, current_fh,
 116                                      open->op_fname.data, open->op_fname.len, &resfh);
 117                 fh_unlock(current_fh);
 118         }
 119         if (status)
 120                 goto out;
 121
 122         set_change_info(&open->op_cinfo, current_fh);
 123
 124         /* set reply cache */
 125         fh_dup2(current_fh, &resfh);
 126         open->op_stateowner->so_replay.rp_openfh_len = resfh.fh_handle.fh_size;
 127         memcpy(open->op_stateowner->so_replay.rp_openfh,
 128                         &resfh.fh_handle.fh_base, resfh.fh_handle.fh_size);
 129
 130         if (!created)
 131                 status = do_open_permission(rqstp, current_fh, open,
 132                                             NFSD_MAY_NOP);
 133
 134 out:
 135         fh_put(&resfh);
 136         return status;
 137 }
 138
 139 static __be32
 140 do_open_fhandle(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open)
 141 {
 142         __be32 status;
 143
 144         /* Only reclaims from previously confirmed clients are valid */
 145         if ((status = nfs4_check_open_reclaim(&open->op_clientid)))
 146                 return status;
 147
 148         /* We don't know the target directory, and therefore can not
 149         * set the change info
 150         */
 151
 152         memset(&open->op_cinfo, 0, sizeof(struct nfsd4_change_info));
 153
 154         /* set replay cache */
 155         open->op_stateowner->so_replay.rp_openfh_len = current_fh->fh_handle.fh_size;
 156         memcpy(open->op_stateowner->so_replay.rp_openfh,
 157                 &current_fh->fh_handle.fh_base,
 158                 current_fh->fh_handle.fh_size);
 159
 160         open->op_truncate = (open->op_iattr.ia_valid & ATTR_SIZE) &&
 161                 (open->op_iattr.ia_size == 0);
 162
 163         status = do_open_permission(rqstp, current_fh, open,
 164                                     NFSD_MAY_OWNER_OVERRIDE);
 165
 166         return status;
 167 }
 168
 169
 170 static __be32
 171 nfsd4_open(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 172            struct nfsd4_open *open)
 173 {
 174         __be32 status;
 175         dprintk("NFSD: nfsd4_open filename %.*s op_stateowner %p\n",
 176                 (int)open->op_fname.len, open->op_fname.data,
 177                 open->op_stateowner);
 178
 179         /* This check required by spec. */
 180         if (open->op_create && open->op_claim_type != NFS4_OPEN_CLAIM_NULL)
 181                 return nfserr_inval;
 182
 183         nfs4_lock_state();
 184
 185         /* check seqid for replay. set nfs4_owner */
 186         status = nfsd4_process_open1(open);
 187         if (status == nfserr_replay_me) {
 188                 struct nfs4_replay *rp = &open->op_stateowner->so_replay;
 189                 fh_put(&cstate->current_fh);
 190                 cstate->current_fh.fh_handle.fh_size = rp->rp_openfh_len;
 191                 memcpy(&cstate->current_fh.fh_handle.fh_base, rp->rp_openfh,
 192                                 rp->rp_openfh_len);
 193                 status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP);
 194                 if (status)
 195                         dprintk("nfsd4_open: replay failed"
 196                                 " restoring previous filehandle\n");
 197                 else
 198                         status = nfserr_replay_me;
 199         }
 200         if (status)
 201                 goto out;
 202
 203         /* Openowner is now set, so sequence id will get bumped.  Now we need
 204          * these checks before we do any creates: */
 205         status = nfserr_grace;
 206         if (locks_in_grace() && open->op_claim_type != NFS4_OPEN_CLAIM_PREVIOUS)
 207                 goto out;
 208         status = nfserr_no_grace;
 209         if (!locks_in_grace() && open->op_claim_type == NFS4_OPEN_CLAIM_PREVIOUS)
 210                 goto out;
 211
 212         switch (open->op_claim_type) {
 213                 case NFS4_OPEN_CLAIM_DELEGATE_CUR:
 214                         status = nfserr_inval;
 215                         if (open->op_create)
 216                                 goto out;
 217                         /* fall through */
 218                 case NFS4_OPEN_CLAIM_NULL:
 219                         /*
 220                          * (1) set CURRENT_FH to the file being opened,
 221                          * creating it if necessary, (2) set open->op_cinfo,
 222                          * (3) set open->op_truncate if the file is to be
 223                          * truncated after opening, (4) do permission checking.
 224                          */
 225                         status = do_open_lookup(rqstp, &cstate->current_fh,
 226                                                 open);
 227                         if (status)
 228                                 goto out;
 229                         break;
 230                 case NFS4_OPEN_CLAIM_PREVIOUS:
 231                         open->op_stateowner->so_confirmed = 1;
 232                         /*
 233                          * The CURRENT_FH is already set to the file being
 234                          * opened.  (1) set open->op_cinfo, (2) set
 235                          * open->op_truncate if the file is to be truncated
 236                          * after opening, (3) do permission checking.
 237                         */
 238                         status = do_open_fhandle(rqstp, &cstate->current_fh,
 239                                                  open);
 240                         if (status)
 241                                 goto out;
 242                         break;
 243                 case NFS4_OPEN_CLAIM_DELEGATE_PREV:
 244                         open->op_stateowner->so_confirmed = 1;
 245                         dprintk("NFSD: unsupported OPEN claim type %d\n",
 246                                 open->op_claim_type);
 247                         status = nfserr_notsupp;
 248                         goto out;
 249                 default:
 250                         dprintk("NFSD: Invalid OPEN claim type %d\n",
 251                                 open->op_claim_type);
 252                         status = nfserr_inval;
 253                         goto out;
 254         }
 255         /*
 256          * nfsd4_process_open2() does the actual opening of the file.  If
 257          * successful, it (1) truncates the file if open->op_truncate was
 258          * set, (2) sets open->op_stateid, (3) sets open->op_delegation.
 259          */
 260         status = nfsd4_process_open2(rqstp, &cstate->current_fh, open);
 261 out:
 262         if (open->op_stateowner) {
 263                 nfs4_get_stateowner(open->op_stateowner);
 264                 cstate->replay_owner = open->op_stateowner;
 265         }
 266         nfs4_unlock_state();
 267         return status;
 268 }
 269
 270 /*
 271  * filehandle-manipulating ops.
 272  */
 273 static __be32
 274 nfsd4_getfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 275             struct svc_fh **getfh)
 276 {
 277         if (!cstate->current_fh.fh_dentry)
 278                 return nfserr_nofilehandle;
 279
 280         *getfh = &cstate->current_fh;
 281         return nfs_ok;
 282 }
 283
 284 static __be32
 285 nfsd4_putfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 286             struct nfsd4_putfh *putfh)
 287 {
 288         fh_put(&cstate->current_fh);
 289         cstate->current_fh.fh_handle.fh_size = putfh->pf_fhlen;
 290         memcpy(&cstate->current_fh.fh_handle.fh_base, putfh->pf_fhval,
 291                putfh->pf_fhlen);
 292         return fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP);
 293 }
 294
 295 static __be32
 296 nfsd4_putrootfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 297                 void *arg)
 298 {
 299         __be32 status;
 300
 301         fh_put(&cstate->current_fh);
 302         status = exp_pseudoroot(rqstp, &cstate->current_fh);
 303         return status;
 304 }
 305
 306 static __be32
 307 nfsd4_restorefh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 308                 void *arg)
 309 {
 310         if (!cstate->save_fh.fh_dentry)
 311                 return nfserr_restorefh;
 312
 313         fh_dup2(&cstate->current_fh, &cstate->save_fh);
 314         return nfs_ok;
 315 }
 316
 317 static __be32
 318 nfsd4_savefh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 319              void *arg)
 320 {
 321         if (!cstate->current_fh.fh_dentry)
 322                 return nfserr_nofilehandle;
 323
 324         fh_dup2(&cstate->save_fh, &cstate->current_fh);
 325         return nfs_ok;
 326 }
 327
 328 /*
 329  * misc nfsv4 ops
 330  */
 331 static __be32
 332 nfsd4_access(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 333              struct nfsd4_access *access)
 334 {
 335         if (access->ac_req_access & ~NFS3_ACCESS_FULL)
 336                 return nfserr_inval;
 337
 338         access->ac_resp_access = access->ac_req_access;
 339         return nfsd_access(rqstp, &cstate->current_fh, &access->ac_resp_access,
 340                            &access->ac_supported);
 341 }
 342
 343 static __be32
 344 nfsd4_commit(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 345              struct nfsd4_commit *commit)
 346 {
 347         __be32 status;
 348
 349         u32 *p = (u32 *)commit->co_verf.data;
 350         *p++ = nfssvc_boot.tv_sec;
 351         *p++ = nfssvc_boot.tv_usec;
 352
 353         status = nfsd_commit(rqstp, &cstate->current_fh, commit->co_offset,
 354                              commit->co_count);
 355         if (status == nfserr_symlink)
 356                 status = nfserr_inval;
 357         return status;
 358 }
 359
 360 static __be32
 361 nfsd4_create(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 362              struct nfsd4_create *create)
 363 {
 364         struct svc_fh resfh;
 365         __be32 status;
 366         dev_t rdev;
 367
 368         fh_init(&resfh, NFS4_FHSIZE);
 369
 370         status = fh_verify(rqstp, &cstate->current_fh, S_IFDIR,
 371                            NFSD_MAY_CREATE);
 372         if (status == nfserr_symlink)
 373                 status = nfserr_notdir;
 374         if (status)
 375                 return status;
 376
 377         switch (create->cr_type) {
 378         case NF4LNK:
 379                 /* ugh! we have to null-terminate the linktext, or
 380                  * vfs_symlink() will choke.  it is always safe to
 381                  * null-terminate by brute force, since at worst we
 382                  * will overwrite the first byte of the create namelen
 383                  * in the XDR buffer, which has already been extracted
 384                  * during XDR decode.
 385                  */
 386                 create->cr_linkname[create->cr_linklen] = 0;
 387
 388                 status = nfsd_symlink(rqstp, &cstate->current_fh,
 389                                       create->cr_name, create->cr_namelen,
 390                                       create->cr_linkname, create->cr_linklen,
 391                                       &resfh, &create->cr_iattr);
 392                 break;
 393
 394         case NF4BLK:
 395                 rdev = MKDEV(create->cr_specdata1, create->cr_specdata2);
 396                 if (MAJOR(rdev) != create->cr_specdata1 ||
 397                     MINOR(rdev) != create->cr_specdata2)
 398                         return nfserr_inval;
 399                 status = nfsd_create(rqstp, &cstate->current_fh,
 400                                      create->cr_name, create->cr_namelen,
 401                                      &create->cr_iattr, S_IFBLK, rdev, &resfh);
 402                 break;
 403
 404         case NF4CHR:
 405                 rdev = MKDEV(create->cr_specdata1, create->cr_specdata2);
 406                 if (MAJOR(rdev) != create->cr_specdata1 ||
 407                     MINOR(rdev) != create->cr_specdata2)
 408                         return nfserr_inval;
 409                 status = nfsd_create(rqstp, &cstate->current_fh,
 410                                      create->cr_name, create->cr_namelen,
 411                                      &create->cr_iattr,S_IFCHR, rdev, &resfh);
 412                 break;
 413
 414         case NF4SOCK:
 415                 status = nfsd_create(rqstp, &cstate->current_fh,
 416                                      create->cr_name, create->cr_namelen,
 417                                      &create->cr_iattr, S_IFSOCK, 0, &resfh);
 418                 break;
 419
 420         case NF4FIFO:
 421                 status = nfsd_create(rqstp, &cstate->current_fh,
 422                                      create->cr_name, create->cr_namelen,
 423                                      &create->cr_iattr, S_IFIFO, 0, &resfh);
 424                 break;
 425
 426         case NF4DIR:
 427                 create->cr_iattr.ia_valid &= ~ATTR_SIZE;
 428                 status = nfsd_create(rqstp, &cstate->current_fh,
 429                                      create->cr_name, create->cr_namelen,
 430                                      &create->cr_iattr, S_IFDIR, 0, &resfh);
 431                 break;
 432
 433         default:
 434                 status = nfserr_badtype;
 435         }
 436
 437         if (!status) {
 438                 fh_unlock(&cstate->current_fh);
 439                 set_change_info(&create->cr_cinfo, &cstate->current_fh);
 440                 fh_dup2(&cstate->current_fh, &resfh);
 441         }
 442
 443         fh_put(&resfh);
 444         return status;
 445 }
 446
 447 static __be32
 448 nfsd4_getattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 449               struct nfsd4_getattr *getattr)
 450 {
 451         __be32 status;
 452
 453         status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP);
 454         if (status)
 455                 return status;
 456
 457         if (getattr->ga_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1)
 458                 return nfserr_inval;
 459
 460         getattr->ga_bmval[0] &= NFSD_SUPPORTED_ATTRS_WORD0;
 461         getattr->ga_bmval[1] &= NFSD_SUPPORTED_ATTRS_WORD1;
 462
 463         getattr->ga_fhp = &cstate->current_fh;
 464         return nfs_ok;
 465 }
 466
 467 static __be32
 468 nfsd4_link(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 469            struct nfsd4_link *link)
 470 {
 471         __be32 status = nfserr_nofilehandle;
 472
 473         if (!cstate->save_fh.fh_dentry)
 474                 return status;
 475         status = nfsd_link(rqstp, &cstate->current_fh,
 476                            link->li_name, link->li_namelen, &cstate->save_fh);
 477         if (!status)
 478                 set_change_info(&link->li_cinfo, &cstate->current_fh);
 479         return status;
 480 }
 481
 482 static __be32
 483 nfsd4_lookupp(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 484               void *arg)
 485 {
 486         struct svc_fh tmp_fh;
 487         __be32 ret;
 488
 489         fh_init(&tmp_fh, NFS4_FHSIZE);
 490         ret = exp_pseudoroot(rqstp, &tmp_fh);
 491         if (ret)
 492                 return ret;
 493         if (tmp_fh.fh_dentry == cstate->current_fh.fh_dentry) {
 494                 fh_put(&tmp_fh);
 495                 return nfserr_noent;
 496         }
 497         fh_put(&tmp_fh);
 498         return nfsd_lookup(rqstp, &cstate->current_fh,
 499                            "..", 2, &cstate->current_fh);
 500 }
 501
 502 static __be32
 503 nfsd4_lookup(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 504              struct nfsd4_lookup *lookup)
 505 {
 506         return nfsd_lookup(rqstp, &cstate->current_fh,
 507                            lookup->lo_name, lookup->lo_len,
 508                            &cstate->current_fh);
 509 }
 510
 511 static __be32
 512 nfsd4_read(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 513            struct nfsd4_read *read)
 514 {
 515         __be32 status;
 516
 517         /* no need to check permission - this will be done in nfsd_read() */
 518
 519         read->rd_filp = NULL;
 520         if (read->rd_offset >= OFFSET_MAX)
 521                 return nfserr_inval;
 522
 523         nfs4_lock_state();
 524         /* check stateid */
 525         if ((status = nfs4_preprocess_stateid_op(&cstate->current_fh,
 526                                 &read->rd_stateid,
 527                                 CHECK_FH | RD_STATE, &read->rd_filp))) {
 528                 dprintk("NFSD: nfsd4_read: couldn't process stateid!\n");
 529                 goto out;
 530         }
 531         if (read->rd_filp)
 532                 get_file(read->rd_filp);
 533         status = nfs_ok;
 534 out:
 535         nfs4_unlock_state();
 536         read->rd_rqstp = rqstp;
 537         read->rd_fhp = &cstate->current_fh;
 538         return status;
 539 }
 540
 541 static __be32
 542 nfsd4_readdir(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 543               struct nfsd4_readdir *readdir)
 544 {
 545         u64 cookie = readdir->rd_cookie;
 546         static const nfs4_verifier zeroverf;
 547
 548         /* no need to check permission - this will be done in nfsd_readdir() */
 549
 550         if (readdir->rd_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1)
 551                 return nfserr_inval;
 552
 553         readdir->rd_bmval[0] &= NFSD_SUPPORTED_ATTRS_WORD0;
 554         readdir->rd_bmval[1] &= NFSD_SUPPORTED_ATTRS_WORD1;
 555
 556         if ((cookie > ~(u32)0) || (cookie == 1) || (cookie == 2) ||
 557             (cookie == 0 && memcmp(readdir->rd_verf.data, zeroverf.data, NFS4_VERIFIER_SIZE)))
 558                 return nfserr_bad_cookie;
 559
 560         readdir->rd_rqstp = rqstp;
 561         readdir->rd_fhp = &cstate->current_fh;
 562         return nfs_ok;
 563 }
 564
 565 static __be32
 566 nfsd4_readlink(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 567                struct nfsd4_readlink *readlink)
 568 {
 569         readlink->rl_rqstp = rqstp;
 570         readlink->rl_fhp = &cstate->current_fh;
 571         return nfs_ok;
 572 }
 573
 574 static __be32
 575 nfsd4_remove(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 576              struct nfsd4_remove *remove)
 577 {
 578         __be32 status;
 579
 580         if (locks_in_grace())
 581                 return nfserr_grace;
 582         status = nfsd_unlink(rqstp, &cstate->current_fh, 0,
 583                              remove->rm_name, remove->rm_namelen);
 584         if (status == nfserr_symlink)
 585                 return nfserr_notdir;
 586         if (!status) {
 587                 fh_unlock(&cstate->current_fh);
 588                 set_change_info(&remove->rm_cinfo, &cstate->current_fh);
 589         }
 590         return status;
 591 }
 592
 593 static __be32
 594 nfsd4_rename(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 595              struct nfsd4_rename *rename)
 596 {
 597         __be32 status = nfserr_nofilehandle;
 598
 599         if (!cstate->save_fh.fh_dentry)
 600                 return status;
 601         if (locks_in_grace() && !(cstate->save_fh.fh_export->ex_flags
 602                                         & NFSEXP_NOSUBTREECHECK))
 603                 return nfserr_grace;
 604         status = nfsd_rename(rqstp, &cstate->save_fh, rename->rn_sname,
 605                              rename->rn_snamelen, &cstate->current_fh,
 606                              rename->rn_tname, rename->rn_tnamelen);
 607
 608         /* the underlying filesystem returns different error's than required
 609          * by NFSv4. both save_fh and current_fh have been verified.. */
 610         if (status == nfserr_isdir)
 611                 status = nfserr_exist;
 612         else if ((status == nfserr_notdir) &&
 613                   (S_ISDIR(cstate->save_fh.fh_dentry->d_inode->i_mode) &&
 614                    S_ISDIR(cstate->current_fh.fh_dentry->d_inode->i_mode)))
 615                 status = nfserr_exist;
 616         else if (status == nfserr_symlink)
 617                 status = nfserr_notdir;
 618
 619         if (!status) {
 620                 set_change_info(&rename->rn_sinfo, &cstate->current_fh);
 621                 set_change_info(&rename->rn_tinfo, &cstate->save_fh);
 622         }
 623         return status;
 624 }
 625
 626 static __be32
 627 nfsd4_secinfo(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 628               struct nfsd4_secinfo *secinfo)
 629 {
 630         struct svc_fh resfh;
 631         struct svc_export *exp;
 632         struct dentry *dentry;
 633         __be32 err;
 634
 635         fh_init(&resfh, NFS4_FHSIZE);
 636         err = nfsd_lookup_dentry(rqstp, &cstate->current_fh,
 637                                     secinfo->si_name, secinfo->si_namelen,
 638                                     &exp, &dentry);
 639         if (err)
 640                 return err;
 641         if (dentry->d_inode == NULL) {
 642                 exp_put(exp);
 643                 err = nfserr_noent;
 644         } else
 645                 secinfo->si_exp = exp;
 646         dput(dentry);
 647         return err;
 648 }
 649
 650 static __be32
 651 nfsd4_setattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 652               struct nfsd4_setattr *setattr)
 653 {
 654         __be32 status = nfs_ok;
 655
 656         if (setattr->sa_iattr.ia_valid & ATTR_SIZE) {
 657                 nfs4_lock_state();
 658                 status = nfs4_preprocess_stateid_op(&cstate->current_fh,
 659                         &setattr->sa_stateid, CHECK_FH | WR_STATE, NULL);
 660                 nfs4_unlock_state();
 661                 if (status) {
 662                         dprintk("NFSD: nfsd4_setattr: couldn't process stateid!\n");
 663                         return status;
 664                 }
 665         }
 666         status = mnt_want_write(cstate->current_fh.fh_export->ex_path.mnt);
 667         if (status)
 668                 return status;
 669         status = nfs_ok;
 670         if (setattr->sa_acl != NULL)
 671                 status = nfsd4_set_nfs4_acl(rqstp, &cstate->current_fh,
 672                                             setattr->sa_acl);
 673         if (status)
 674                 goto out;
 675         status = nfsd_setattr(rqstp, &cstate->current_fh, &setattr->sa_iattr,
 676                                 0, (time_t)0);
 677 out:
 678         mnt_drop_write(cstate->current_fh.fh_export->ex_path.mnt);
 679         return status;
 680 }
 681
 682 static __be32
 683 nfsd4_write(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 684             struct nfsd4_write *write)
 685 {
 686         stateid_t *stateid = &write->wr_stateid;
 687         struct file *filp = NULL;
 688         u32 *p;
 689         __be32 status = nfs_ok;
 690
 691         /* no need to check permission - this will be done in nfsd_write() */
 692
 693         if (write->wr_offset >= OFFSET_MAX)
 694                 return nfserr_inval;
 695
 696         nfs4_lock_state();
 697         status = nfs4_preprocess_stateid_op(&cstate->current_fh, stateid,
 698                                         CHECK_FH | WR_STATE, &filp);
 699         if (filp)
 700                 get_file(filp);
 701         nfs4_unlock_state();
 702
 703         if (status) {
 704                 dprintk("NFSD: nfsd4_write: couldn't process stateid!\n");
 705                 return status;
 706         }
 707
 708         write->wr_bytes_written = write->wr_buflen;
 709         write->wr_how_written = write->wr_stable_how;
 710         p = (u32 *)write->wr_verifier.data;
 711         *p++ = nfssvc_boot.tv_sec;
 712         *p++ = nfssvc_boot.tv_usec;
 713
 714         status =  nfsd_write(rqstp, &cstate->current_fh, filp,
 715                              write->wr_offset, rqstp->rq_vec, write->wr_vlen,
 716                              write->wr_buflen, &write->wr_how_written);
 717         if (filp)
 718                 fput(filp);
 719
 720         if (status == nfserr_symlink)
 721                 status = nfserr_inval;
 722         return status;
 723 }
 724
 725 /* This routine never returns NFS_OK!  If there are no other errors, it
 726  * will return NFSERR_SAME or NFSERR_NOT_SAME depending on whether the
 727  * attributes matched.  VERIFY is implemented by mapping NFSERR_SAME
 728  * to NFS_OK after the call; NVERIFY by mapping NFSERR_NOT_SAME to NFS_OK.
 729  */
 730 static __be32
 731 _nfsd4_verify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 732              struct nfsd4_verify *verify)
 733 {
 734         __be32 *buf, *p;
 735         int count;
 736         __be32 status;
 737
 738         status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP);
 739         if (status)
 740                 return status;
 741
 742         if ((verify->ve_bmval[0] & ~NFSD_SUPPORTED_ATTRS_WORD0)
 743             || (verify->ve_bmval[1] & ~NFSD_SUPPORTED_ATTRS_WORD1))
 744                 return nfserr_attrnotsupp;
 745         if ((verify->ve_bmval[0] & FATTR4_WORD0_RDATTR_ERROR)
 746             || (verify->ve_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1))
 747                 return nfserr_inval;
 748         if (verify->ve_attrlen & 3)
 749                 return nfserr_inval;
 750
 751         /* count in words:
 752          *   bitmap_len(1) + bitmap(2) + attr_len(1) = 4
 753          */
 754         count = 4 + (verify->ve_attrlen >> 2);
 755         buf = kmalloc(count << 2, GFP_KERNEL);
 756         if (!buf)
 757                 return nfserr_resource;
 758
 759         status = nfsd4_encode_fattr(&cstate->current_fh,
 760                                     cstate->current_fh.fh_export,
 761                                     cstate->current_fh.fh_dentry, buf,
 762                                     &count, verify->ve_bmval,
 763                                     rqstp, 0);
 764
 765         /* this means that nfsd4_encode_fattr() ran out of space */
 766         if (status == nfserr_resource && count == 0)
 767                 status = nfserr_not_same;
 768         if (status)
 769                 goto out_kfree;
 770
 771         p = buf + 3;
 772         status = nfserr_not_same;
 773         if (ntohl(*p++) != verify->ve_attrlen)
 774                 goto out_kfree;
 775         if (!memcmp(p, verify->ve_attrval, verify->ve_attrlen))
 776                 status = nfserr_same;
 777
 778 out_kfree:
 779         kfree(buf);
 780         return status;
 781 }
 782
 783 static __be32
 784 nfsd4_nverify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 785               struct nfsd4_verify *verify)
 786 {
 787         __be32 status;
 788
 789         status = _nfsd4_verify(rqstp, cstate, verify);
 790         return status == nfserr_not_same ? nfs_ok : status;
 791 }
 792
 793 static __be32
 794 nfsd4_verify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 795              struct nfsd4_verify *verify)
 796 {
 797         __be32 status;
 798
 799         status = _nfsd4_verify(rqstp, cstate, verify);
 800         return status == nfserr_same ? nfs_ok : status;
 801 }
 802
 803 /*
 804  * NULL call.
 805  */
 806 static __be32
 807 nfsd4_proc_null(struct svc_rqst *rqstp, void *argp, void *resp)
 808 {
 809         return nfs_ok;
 810 }
 811
 812 static inline void nfsd4_increment_op_stats(u32 opnum)
 813 {
 814         if (opnum >= FIRST_NFS4_OP && opnum <= LAST_NFS4_OP)
 815                 nfsdstats.nfs4_opcount[opnum]++;
 816 }
 817
 818 static void cstate_free(struct nfsd4_compound_state *cstate)
 819 {
 820         if (cstate == NULL)
 821                 return;
 822         fh_put(&cstate->current_fh);
 823         fh_put(&cstate->save_fh);
 824         BUG_ON(cstate->replay_owner);
 825         kfree(cstate);
 826 }
 827
 828 static struct nfsd4_compound_state *cstate_alloc(void)
 829 {
 830         struct nfsd4_compound_state *cstate;
 831
 832         cstate = kmalloc(sizeof(struct nfsd4_compound_state), GFP_KERNEL);
 833         if (cstate == NULL)
 834                 return NULL;
 835         fh_init(&cstate->current_fh, NFS4_FHSIZE);
 836         fh_init(&cstate->save_fh, NFS4_FHSIZE);
 837         cstate->replay_owner = NULL;
 838         return cstate;
 839 }
 840
 841 typedef __be32(*nfsd4op_func)(struct svc_rqst *, struct nfsd4_compound_state *,
 842                               void *);
 843
 844 struct nfsd4_operation {
 845         nfsd4op_func op_func;
 846         u32 op_flags;
 847 /* Most ops require a valid current filehandle; a few don't: */
 848 #define ALLOWED_WITHOUT_FH 1
 849 /* GETATTR and ops not listed as returning NFS4ERR_MOVED: */
 850 #define ALLOWED_ON_ABSENT_FS 2
 851         char *op_name;
 852 };
 853
 854 static struct nfsd4_operation nfsd4_ops[];
 855
 856 static const char *nfsd4_op_name(unsigned opnum);
 857
 858 /*
 859  * COMPOUND call.
 860  */
 861 static __be32
 862 nfsd4_proc_compound(struct svc_rqst *rqstp,
 863                     struct nfsd4_compoundargs *args,
 864                     struct nfsd4_compoundres *resp)
 865 {
 866         struct nfsd4_op *op;
 867         struct nfsd4_operation *opdesc;
 868         struct nfsd4_compound_state *cstate = NULL;
 869         int             slack_bytes;
 870         __be32          status;
 871
 872         resp->xbuf = &rqstp->rq_res;
 873         resp->p = rqstp->rq_res.head[0].iov_base + rqstp->rq_res.head[0].iov_len;
 874         resp->tagp = resp->p;
 875         /* reserve space for: taglen, tag, and opcnt */
 876         resp->p += 2 + XDR_QUADLEN(args->taglen);
 877         resp->end = rqstp->rq_res.head[0].iov_base + PAGE_SIZE;
 878         resp->taglen = args->taglen;
 879         resp->tag = args->tag;
 880         resp->opcnt = 0;
 881         resp->rqstp = rqstp;
 882
 883         /*
 884          * According to RFC3010, this takes precedence over all other errors.
 885          */
 886         status = nfserr_minor_vers_mismatch;
 887         if (args->minorversion > NFSD_SUPPORTED_MINOR_VERSION)
 888                 goto out;
 889
 890         status = nfserr_resource;
 891         cstate = cstate_alloc();
 892         if (cstate == NULL)
 893                 goto out;
 894
 895         status = nfs_ok;
 896         while (!status && resp->opcnt < args->opcnt) {
 897                 op = &args->ops[resp->opcnt++];
 898
 899                 dprintk("nfsv4 compound op #%d/%d: %d (%s)\n",
 900                         resp->opcnt, args->opcnt, op->opnum,
 901                         nfsd4_op_name(op->opnum));
 902
 903                 /*
 904                  * The XDR decode routines may have pre-set op->status;
 905                  * for example, if there is a miscellaneous XDR error
 906                  * it will be set to nfserr_bad_xdr.
 907                  */
 908                 if (op->status)
 909                         goto encode_op;
 910
 911                 /* We must be able to encode a successful response to
 912                  * this operation, with enough room left over to encode a
 913                  * failed response to the next operation.  If we don't
 914                  * have enough room, fail with ERR_RESOURCE.
 915                  */
 916                 slack_bytes = (char *)resp->end - (char *)resp->p;
 917                 if (slack_bytes < COMPOUND_SLACK_SPACE
 918                                 + COMPOUND_ERR_SLACK_SPACE) {
 919                         BUG_ON(slack_bytes < COMPOUND_ERR_SLACK_SPACE);
 920                         op->status = nfserr_resource;
 921                         goto encode_op;
 922                 }
 923
 924                 opdesc = &nfsd4_ops[op->opnum];
 925
 926                 if (!cstate->current_fh.fh_dentry) {
 927                         if (!(opdesc->op_flags & ALLOWED_WITHOUT_FH)) {
 928                                 op->status = nfserr_nofilehandle;
 929                                 goto encode_op;
 930                         }
 931                 } else if (cstate->current_fh.fh_export->ex_fslocs.migrated &&
 932                           !(opdesc->op_flags & ALLOWED_ON_ABSENT_FS)) {
 933                         op->status = nfserr_moved;
 934                         goto encode_op;
 935                 }
 936
 937                 if (opdesc->op_func)
 938                         op->status = opdesc->op_func(rqstp, cstate, &op->u);
 939                 else
 940                         BUG_ON(op->status == nfs_ok);
 941
 942 encode_op:
 943                 if (op->status == nfserr_replay_me) {
 944                         op->replay = &cstate->replay_owner->so_replay;
 945                         nfsd4_encode_replay(resp, op);
 946                         status = op->status = op->replay->rp_status;
 947                 } else {
 948                         nfsd4_encode_operation(resp, op);
 949                         status = op->status;
 950                 }
 951
 952                 dprintk("nfsv4 compound op %p opcnt %d #%d: %d: status %d\n",
 953                         args->ops, args->opcnt, resp->opcnt, op->opnum,
 954                         be32_to_cpu(status));
 955
 956                 if (cstate->replay_owner) {
 957                         nfs4_put_stateowner(cstate->replay_owner);
 958                         cstate->replay_owner = NULL;
 959                 }
 960                 /* XXX Ugh, we need to get rid of this kind of special case: */
 961                 if (op->opnum == OP_READ && op->u.read.rd_filp)
 962                         fput(op->u.read.rd_filp);
 963
 964                 nfsd4_increment_op_stats(op->opnum);
 965         }
 966
 967         cstate_free(cstate);
 968 out:
 969         nfsd4_release_compoundargs(args);
 970         dprintk("nfsv4 compound returned %d\n", ntohl(status));
 971         return status;
 972 }
 973
 974 static struct nfsd4_operation nfsd4_ops[OP_RELEASE_LOCKOWNER+1] = {
 975         [OP_ACCESS] = {
 976                 .op_func = (nfsd4op_func)nfsd4_access,
 977                 .op_name = "OP_ACCESS",
 978         },
 979         [OP_CLOSE] = {
 980                 .op_func = (nfsd4op_func)nfsd4_close,
 981                 .op_name = "OP_CLOSE",
 982         },
 983         [OP_COMMIT] = {
 984                 .op_func = (nfsd4op_func)nfsd4_commit,
 985                 .op_name = "OP_COMMIT",
 986         },
 987         [OP_CREATE] = {
 988                 .op_func = (nfsd4op_func)nfsd4_create,
 989                 .op_name = "OP_CREATE",
 990         },
 991         [OP_DELEGRETURN] = {
 992                 .op_func = (nfsd4op_func)nfsd4_delegreturn,
 993                 .op_name = "OP_DELEGRETURN",
 994         },
 995         [OP_GETATTR] = {
 996                 .op_func = (nfsd4op_func)nfsd4_getattr,
 997                 .op_flags = ALLOWED_ON_ABSENT_FS,
 998                 .op_name = "OP_GETATTR",
 999         },
1000         [OP_GETFH] = {
1001                 .op_func = (nfsd4op_func)nfsd4_getfh,
1002                 .op_name = "OP_GETFH",
1003         },
1004         [OP_LINK] = {
1005                 .op_func = (nfsd4op_func)nfsd4_link,
1006                 .op_name = "OP_LINK",
1007         },
1008         [OP_LOCK] = {
1009                 .op_func = (nfsd4op_func)nfsd4_lock,
1010                 .op_name = "OP_LOCK",
1011         },
1012         [OP_LOCKT] = {
1013                 .op_func = (nfsd4op_func)nfsd4_lockt,
1014                 .op_name = "OP_LOCKT",
1015         },
1016         [OP_LOCKU] = {
1017                 .op_func = (nfsd4op_func)nfsd4_locku,
1018                 .op_name = "OP_LOCKU",
1019         },
1020         [OP_LOOKUP] = {
1021                 .op_func = (nfsd4op_func)nfsd4_lookup,
1022                 .op_name = "OP_LOOKUP",
1023         },
1024         [OP_LOOKUPP] = {
1025                 .op_func = (nfsd4op_func)nfsd4_lookupp,
1026                 .op_name = "OP_LOOKUPP",
1027         },
1028         [OP_NVERIFY] = {
1029                 .op_func = (nfsd4op_func)nfsd4_nverify,
1030                 .op_name = "OP_NVERIFY",
1031         },
1032         [OP_OPEN] = {
1033                 .op_func = (nfsd4op_func)nfsd4_open,
1034                 .op_name = "OP_OPEN",
1035         },
1036         [OP_OPEN_CONFIRM] = {
1037                 .op_func = (nfsd4op_func)nfsd4_open_confirm,
1038                 .op_name = "OP_OPEN_CONFIRM",
1039         },
1040         [OP_OPEN_DOWNGRADE] = {
1041                 .op_func = (nfsd4op_func)nfsd4_open_downgrade,
1042                 .op_name = "OP_OPEN_DOWNGRADE",
1043         },
1044         [OP_PUTFH] = {
1045                 .op_func = (nfsd4op_func)nfsd4_putfh,
1046                 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
1047                 .op_name = "OP_PUTFH",
1048         },
1049         [OP_PUTPUBFH] = {
1050                 /* unsupported, just for future reference: */
1051                 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
1052                 .op_name = "OP_PUTPUBFH",
1053         },
1054         [OP_PUTROOTFH] = {
1055                 .op_func = (nfsd4op_func)nfsd4_putrootfh,
1056                 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
1057                 .op_name = "OP_PUTROOTFH",
1058         },
1059         [OP_READ] = {
1060                 .op_func = (nfsd4op_func)nfsd4_read,
1061                 .op_name = "OP_READ",
1062         },
1063         [OP_READDIR] = {
1064                 .op_func = (nfsd4op_func)nfsd4_readdir,
1065                 .op_name = "OP_READDIR",
1066         },
1067         [OP_READLINK] = {
1068                 .op_func = (nfsd4op_func)nfsd4_readlink,
1069                 .op_name = "OP_READLINK",
1070         },
1071         [OP_REMOVE] = {
1072                 .op_func = (nfsd4op_func)nfsd4_remove,
1073                 .op_name = "OP_REMOVE",
1074         },
1075         [OP_RENAME] = {
1076                 .op_name = "OP_RENAME",
1077                 .op_func = (nfsd4op_func)nfsd4_rename,
1078         },
1079         [OP_RENEW] = {
1080                 .op_func = (nfsd4op_func)nfsd4_renew,
1081                 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
1082                 .op_name = "OP_RENEW",
1083         },
1084         [OP_RESTOREFH] = {
1085                 .op_func = (nfsd4op_func)nfsd4_restorefh,
1086                 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
1087                 .op_name = "OP_RESTOREFH",
1088         },
1089         [OP_SAVEFH] = {
1090                 .op_func = (nfsd4op_func)nfsd4_savefh,
1091                 .op_name = "OP_SAVEFH",
1092         },
1093         [OP_SECINFO] = {
1094                 .op_func = (nfsd4op_func)nfsd4_secinfo,
1095                 .op_name = "OP_SECINFO",
1096         },
1097         [OP_SETATTR] = {
1098                 .op_func = (nfsd4op_func)nfsd4_setattr,
1099                 .op_name = "OP_SETATTR",
1100         },
1101         [OP_SETCLIENTID] = {
1102                 .op_func = (nfsd4op_func)nfsd4_setclientid,
1103                 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
1104                 .op_name = "OP_SETCLIENTID",
1105         },
1106         [OP_SETCLIENTID_CONFIRM] = {
1107                 .op_func = (nfsd4op_func)nfsd4_setclientid_confirm,
1108                 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
1109                 .op_name = "OP_SETCLIENTID_CONFIRM",
1110         },
1111         [OP_VERIFY] = {
1112                 .op_func = (nfsd4op_func)nfsd4_verify,
1113                 .op_name = "OP_VERIFY",
1114         },
1115         [OP_WRITE] = {
1116                 .op_func = (nfsd4op_func)nfsd4_write,
1117                 .op_name = "OP_WRITE",
1118         },
1119         [OP_RELEASE_LOCKOWNER] = {
1120                 .op_func = (nfsd4op_func)nfsd4_release_lockowner,
1121                 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
1122                 .op_name = "OP_RELEASE_LOCKOWNER",
1123         },
1124 };
1125
1126 static const char *nfsd4_op_name(unsigned opnum)
1127 {
1128         if (opnum < ARRAY_SIZE(nfsd4_ops))
1129                 return nfsd4_ops[opnum].op_name;
1130         return "unknown_operation";
1131 }
1132
1133 #define nfs4svc_decode_voidargs         NULL
1134 #define nfs4svc_release_void            NULL
1135 #define nfsd4_voidres                   nfsd4_voidargs
1136 #define nfs4svc_release_compound        NULL
1137 struct nfsd4_voidargs { int dummy; };
1138
1139 #define PROC(name, argt, rest, relt, cache, respsize)   \
1140  { (svc_procfunc) nfsd4_proc_##name,            \
1141    (kxdrproc_t) nfs4svc_decode_##argt##args,    \
1142    (kxdrproc_t) nfs4svc_encode_##rest##res,     \
1143    (kxdrproc_t) nfs4svc_release_##relt,         \
1144    sizeof(struct nfsd4_##argt##args),           \
1145    sizeof(struct nfsd4_##rest##res),            \
1146    0,                                           \
1147    cache,                                       \
1148    respsize,                                    \
1149  }
1150
1151 /*
1152  * TODO: At the present time, the NFSv4 server does not do XID caching
1153  * of requests.  Implementing XID caching would not be a serious problem,
1154  * although it would require a mild change in interfaces since one
1155  * doesn't know whether an NFSv4 request is idempotent until after the
1156  * XDR decode.  However, XID caching totally confuses pynfs (Peter
1157  * Astrand's regression testsuite for NFSv4 servers), which reuses
1158  * XID's liberally, so I've left it unimplemented until pynfs generates
1159  * better XID's.
1160  */
1161 static struct svc_procedure             nfsd_procedures4[2] = {
1162   PROC(null,     void,          void,           void,     RC_NOCACHE, 1),
1163   PROC(compound, compound,      compound,       compound, RC_NOCACHE, NFSD_BUFSIZE/4)
1164 };
1165
1166 struct svc_version      nfsd_version4 = {
1167                 .vs_vers        = 4,
1168                 .vs_nproc       = 2,
1169                 .vs_proc        = nfsd_procedures4,
1170                 .vs_dispatch    = nfsd_dispatch,
1171                 .vs_xdrsize     = NFS4_SVC_XDRSIZE,
1172 };
1173
1174 /*
1175  * Local variables:
1176  *  c-basic-offset: 8
1177  * End:
1178  */