err.no Git - linux-2.6/blob - fs/nfs/nfs4xdr.c

   1 /*
   2  *  fs/nfs/nfs4xdr.c
   3  *
   4  *  Client-side XDR 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/time.h>
  40 #include <linux/mm.h>
  41 #include <linux/slab.h>
  42 #include <linux/utsname.h>
  43 #include <linux/errno.h>
  44 #include <linux/string.h>
  45 #include <linux/in.h>
  46 #include <linux/pagemap.h>
  47 #include <linux/proc_fs.h>
  48 #include <linux/kdev_t.h>
  49 #include <linux/sunrpc/clnt.h>
  50 #include <linux/nfs.h>
  51 #include <linux/nfs4.h>
  52 #include <linux/nfs_fs.h>
  53 #include <linux/nfs_idmap.h>
  54 #include "nfs4_fs.h"
  55
  56 #define NFSDBG_FACILITY         NFSDBG_XDR
  57
  58 /* Mapping from NFS error code to "errno" error code. */
  59 #define errno_NFSERR_IO         EIO
  60
  61 static int nfs_stat_to_errno(int);
  62
  63 /* NFSv4 COMPOUND tags are only wanted for debugging purposes */
  64 #ifdef DEBUG
  65 #define NFS4_MAXTAGLEN          20
  66 #else
  67 #define NFS4_MAXTAGLEN          0
  68 #endif
  69
  70 /* lock,open owner id:
  71  * we currently use size 1 (u32) out of (NFS4_OPAQUE_LIMIT  >> 2)
  72  */
  73 #define owner_id_maxsz          (1 + 1)
  74 #define compound_encode_hdr_maxsz       (3 + (NFS4_MAXTAGLEN >> 2))
  75 #define compound_decode_hdr_maxsz       (3 + (NFS4_MAXTAGLEN >> 2))
  76 #define op_encode_hdr_maxsz     (1)
  77 #define op_decode_hdr_maxsz     (2)
  78 #define encode_putfh_maxsz      (op_encode_hdr_maxsz + 1 + \
  79                                 (NFS4_FHSIZE >> 2))
  80 #define decode_putfh_maxsz      (op_decode_hdr_maxsz)
  81 #define encode_putrootfh_maxsz  (op_encode_hdr_maxsz)
  82 #define decode_putrootfh_maxsz  (op_decode_hdr_maxsz)
  83 #define encode_getfh_maxsz      (op_encode_hdr_maxsz)
  84 #define decode_getfh_maxsz      (op_decode_hdr_maxsz + 1 + \
  85                                 ((3+NFS4_FHSIZE) >> 2))
  86 #define nfs4_fattr_bitmap_maxsz 3
  87 #define encode_getattr_maxsz    (op_encode_hdr_maxsz + nfs4_fattr_bitmap_maxsz)
  88 #define nfs4_name_maxsz         (1 + ((3 + NFS4_MAXNAMLEN) >> 2))
  89 #define nfs4_path_maxsz         (1 + ((3 + NFS4_MAXPATHLEN) >> 2))
  90 /* This is based on getfattr, which uses the most attributes: */
  91 #define nfs4_fattr_value_maxsz  (1 + (1 + 2 + 2 + 4 + 2 + 1 + 1 + 2 + 2 + \
  92                                 3 + 3 + 3 + 2 * nfs4_name_maxsz))
  93 #define nfs4_fattr_maxsz        (nfs4_fattr_bitmap_maxsz + \
  94                                 nfs4_fattr_value_maxsz)
  95 #define decode_getattr_maxsz    (op_decode_hdr_maxsz + nfs4_fattr_maxsz)
  96 #define encode_savefh_maxsz     (op_encode_hdr_maxsz)
  97 #define decode_savefh_maxsz     (op_decode_hdr_maxsz)
  98 #define encode_restorefh_maxsz  (op_encode_hdr_maxsz)
  99 #define decode_restorefh_maxsz  (op_decode_hdr_maxsz)
 100 #define encode_fsinfo_maxsz     (op_encode_hdr_maxsz + 2)
 101 #define decode_fsinfo_maxsz     (op_decode_hdr_maxsz + 11)
 102 #define encode_renew_maxsz      (op_encode_hdr_maxsz + 3)
 103 #define decode_renew_maxsz      (op_decode_hdr_maxsz)
 104 #define encode_setclientid_maxsz \
 105                                 (op_encode_hdr_maxsz + \
 106                                 4 /*server->ip_addr*/ + \
 107                                 1 /*Netid*/ + \
 108                                 6 /*uaddr*/ + \
 109                                 6 + (NFS4_VERIFIER_SIZE >> 2))
 110 #define decode_setclientid_maxsz \
 111                                 (op_decode_hdr_maxsz + \
 112                                 2 + \
 113                                 1024) /* large value for CLID_INUSE */
 114 #define encode_setclientid_confirm_maxsz \
 115                                 (op_encode_hdr_maxsz + \
 116                                 3 + (NFS4_VERIFIER_SIZE >> 2))
 117 #define decode_setclientid_confirm_maxsz \
 118                                 (op_decode_hdr_maxsz)
 119 #define encode_lookup_maxsz     (op_encode_hdr_maxsz + \
 120                                 1 + ((3 + NFS4_FHSIZE) >> 2))
 121 #define encode_remove_maxsz     (op_encode_hdr_maxsz + \
 122                                 nfs4_name_maxsz)
 123 #define encode_rename_maxsz     (op_encode_hdr_maxsz + \
 124                                 2 * nfs4_name_maxsz)
 125 #define decode_rename_maxsz     (op_decode_hdr_maxsz + 5 + 5)
 126 #define encode_link_maxsz       (op_encode_hdr_maxsz + \
 127                                 nfs4_name_maxsz)
 128 #define decode_link_maxsz       (op_decode_hdr_maxsz + 5)
 129 #define encode_symlink_maxsz    (op_encode_hdr_maxsz + \
 130                                 1 + nfs4_name_maxsz + \
 131                                 nfs4_path_maxsz + \
 132                                 nfs4_fattr_maxsz)
 133 #define decode_symlink_maxsz    (op_decode_hdr_maxsz + 8)
 134 #define encode_create_maxsz     (op_encode_hdr_maxsz + \
 135                                 2 + nfs4_name_maxsz + \
 136                                 nfs4_fattr_maxsz)
 137 #define decode_create_maxsz     (op_decode_hdr_maxsz + 8)
 138 #define encode_delegreturn_maxsz (op_encode_hdr_maxsz + 4)
 139 #define decode_delegreturn_maxsz (op_decode_hdr_maxsz)
 140 #define NFS4_enc_compound_sz    (1024)  /* XXX: large enough? */
 141 #define NFS4_dec_compound_sz    (1024)  /* XXX: large enough? */
 142 #define NFS4_enc_read_sz        (compound_encode_hdr_maxsz + \
 143                                 encode_putfh_maxsz + \
 144                                 op_encode_hdr_maxsz + 7)
 145 #define NFS4_dec_read_sz        (compound_decode_hdr_maxsz + \
 146                                 decode_putfh_maxsz + \
 147                                 op_decode_hdr_maxsz + 2)
 148 #define NFS4_enc_readlink_sz    (compound_encode_hdr_maxsz + \
 149                                 encode_putfh_maxsz + \
 150                                 op_encode_hdr_maxsz)
 151 #define NFS4_dec_readlink_sz    (compound_decode_hdr_maxsz + \
 152                                 decode_putfh_maxsz + \
 153                                 op_decode_hdr_maxsz)
 154 #define NFS4_enc_readdir_sz     (compound_encode_hdr_maxsz + \
 155                                 encode_putfh_maxsz + \
 156                                 op_encode_hdr_maxsz + 9)
 157 #define NFS4_dec_readdir_sz     (compound_decode_hdr_maxsz + \
 158                                 decode_putfh_maxsz + \
 159                                 op_decode_hdr_maxsz + 2)
 160 #define NFS4_enc_write_sz       (compound_encode_hdr_maxsz + \
 161                                 encode_putfh_maxsz + \
 162                                 op_encode_hdr_maxsz + 8)
 163 #define NFS4_dec_write_sz       (compound_decode_hdr_maxsz + \
 164                                 decode_putfh_maxsz + \
 165                                 op_decode_hdr_maxsz + 4)
 166 #define NFS4_enc_commit_sz      (compound_encode_hdr_maxsz + \
 167                                 encode_putfh_maxsz + \
 168                                 op_encode_hdr_maxsz + 3)
 169 #define NFS4_dec_commit_sz      (compound_decode_hdr_maxsz + \
 170                                 decode_putfh_maxsz + \
 171                                 op_decode_hdr_maxsz + 2)
 172 #define NFS4_enc_open_sz        (compound_encode_hdr_maxsz + \
 173                                 encode_putfh_maxsz + \
 174                                 op_encode_hdr_maxsz + \
 175                                 13 + 3 + 2 + 64 + \
 176                                 encode_getattr_maxsz + \
 177                                 encode_getfh_maxsz)
 178 #define NFS4_dec_open_sz        (compound_decode_hdr_maxsz + \
 179                                 decode_putfh_maxsz + \
 180                                 op_decode_hdr_maxsz + 4 + 5 + 2 + 3 + \
 181                                 decode_getattr_maxsz + \
 182                                 decode_getfh_maxsz)
 183 #define NFS4_enc_open_confirm_sz      \
 184                                 (compound_encode_hdr_maxsz + \
 185                                 encode_putfh_maxsz + \
 186                                 op_encode_hdr_maxsz + 5)
 187 #define NFS4_dec_open_confirm_sz        (compound_decode_hdr_maxsz + \
 188                                         decode_putfh_maxsz + \
 189                                         op_decode_hdr_maxsz + 4)
 190 #define NFS4_enc_open_noattr_sz (compound_encode_hdr_maxsz + \
 191                                         encode_putfh_maxsz + \
 192                                         op_encode_hdr_maxsz + \
 193                                         11)
 194 #define NFS4_dec_open_noattr_sz (compound_decode_hdr_maxsz + \
 195                                         decode_putfh_maxsz + \
 196                                         op_decode_hdr_maxsz + \
 197                                         4 + 5 + 2 + 3)
 198 #define NFS4_enc_open_downgrade_sz \
 199                                 (compound_encode_hdr_maxsz + \
 200                                 encode_putfh_maxsz + \
 201                                 op_encode_hdr_maxsz + 7 + \
 202                                 encode_getattr_maxsz)
 203 #define NFS4_dec_open_downgrade_sz \
 204                                 (compound_decode_hdr_maxsz + \
 205                                 decode_putfh_maxsz + \
 206                                 op_decode_hdr_maxsz + 4 + \
 207                                 decode_getattr_maxsz)
 208 #define NFS4_enc_close_sz       (compound_encode_hdr_maxsz + \
 209                                 encode_putfh_maxsz + \
 210                                 op_encode_hdr_maxsz + 5 + \
 211                                 encode_getattr_maxsz)
 212 #define NFS4_dec_close_sz       (compound_decode_hdr_maxsz + \
 213                                 decode_putfh_maxsz + \
 214                                 op_decode_hdr_maxsz + 4 + \
 215                                 decode_getattr_maxsz)
 216 #define NFS4_enc_setattr_sz     (compound_encode_hdr_maxsz + \
 217                                 encode_putfh_maxsz + \
 218                                 op_encode_hdr_maxsz + 4 + \
 219                                 nfs4_fattr_maxsz + \
 220                                 encode_getattr_maxsz)
 221 #define NFS4_dec_setattr_sz     (compound_decode_hdr_maxsz + \
 222                                 decode_putfh_maxsz + \
 223                                 op_decode_hdr_maxsz + 3)
 224 #define NFS4_enc_fsinfo_sz      (compound_encode_hdr_maxsz + \
 225                                 encode_putfh_maxsz + \
 226                                 encode_fsinfo_maxsz)
 227 #define NFS4_dec_fsinfo_sz      (compound_decode_hdr_maxsz + \
 228                                 decode_putfh_maxsz + \
 229                                 decode_fsinfo_maxsz)
 230 #define NFS4_enc_renew_sz       (compound_encode_hdr_maxsz + \
 231                                 encode_renew_maxsz)
 232 #define NFS4_dec_renew_sz       (compound_decode_hdr_maxsz + \
 233                                 decode_renew_maxsz)
 234 #define NFS4_enc_setclientid_sz (compound_encode_hdr_maxsz + \
 235                                 encode_setclientid_maxsz)
 236 #define NFS4_dec_setclientid_sz (compound_decode_hdr_maxsz + \
 237                                 decode_setclientid_maxsz)
 238 #define NFS4_enc_setclientid_confirm_sz \
 239                                 (compound_encode_hdr_maxsz + \
 240                                 encode_setclientid_confirm_maxsz + \
 241                                 encode_putrootfh_maxsz + \
 242                                 encode_fsinfo_maxsz)
 243 #define NFS4_dec_setclientid_confirm_sz \
 244                                 (compound_decode_hdr_maxsz + \
 245                                 decode_setclientid_confirm_maxsz + \
 246                                 decode_putrootfh_maxsz + \
 247                                 decode_fsinfo_maxsz)
 248 #define NFS4_enc_lock_sz        (compound_encode_hdr_maxsz + \
 249                                 encode_putfh_maxsz + \
 250                                 encode_getattr_maxsz + \
 251                                 op_encode_hdr_maxsz + \
 252                                 1 + 1 + 2 + 2 + \
 253                                 1 + 4 + 1 + 2 + \
 254                                 owner_id_maxsz)
 255 #define NFS4_dec_lock_sz        (compound_decode_hdr_maxsz + \
 256                                 decode_putfh_maxsz + \
 257                                 decode_getattr_maxsz + \
 258                                 op_decode_hdr_maxsz + \
 259                                 2 + 2 + 1 + 2 + \
 260                                 owner_id_maxsz)
 261 #define NFS4_enc_lockt_sz       (compound_encode_hdr_maxsz + \
 262                                 encode_putfh_maxsz + \
 263                                 encode_getattr_maxsz + \
 264                                 op_encode_hdr_maxsz + \
 265                                 1 + 2 + 2 + 2 + \
 266                                 owner_id_maxsz)
 267 #define NFS4_dec_lockt_sz       (NFS4_dec_lock_sz)
 268 #define NFS4_enc_locku_sz       (compound_encode_hdr_maxsz + \
 269                                 encode_putfh_maxsz + \
 270                                 encode_getattr_maxsz + \
 271                                 op_encode_hdr_maxsz + \
 272                                 1 + 1 + 4 + 2 + 2)
 273 #define NFS4_dec_locku_sz       (compound_decode_hdr_maxsz + \
 274                                 decode_putfh_maxsz + \
 275                                 decode_getattr_maxsz + \
 276                                 op_decode_hdr_maxsz + 4)
 277 #define NFS4_enc_access_sz      (compound_encode_hdr_maxsz + \
 278                                 encode_putfh_maxsz + \
 279                                 op_encode_hdr_maxsz + 1)
 280 #define NFS4_dec_access_sz      (compound_decode_hdr_maxsz + \
 281                                 decode_putfh_maxsz + \
 282                                 op_decode_hdr_maxsz + 2)
 283 #define NFS4_enc_getattr_sz     (compound_encode_hdr_maxsz + \
 284                                 encode_putfh_maxsz + \
 285                                 encode_getattr_maxsz)
 286 #define NFS4_dec_getattr_sz     (compound_decode_hdr_maxsz + \
 287                                 decode_putfh_maxsz + \
 288                                 decode_getattr_maxsz)
 289 #define NFS4_enc_lookup_sz      (compound_encode_hdr_maxsz + \
 290                                 encode_putfh_maxsz + \
 291                                 encode_lookup_maxsz + \
 292                                 encode_getattr_maxsz + \
 293                                 encode_getfh_maxsz)
 294 #define NFS4_dec_lookup_sz      (compound_decode_hdr_maxsz + \
 295                                 decode_putfh_maxsz + \
 296                                 op_decode_hdr_maxsz + \
 297                                 decode_getattr_maxsz + \
 298                                 decode_getfh_maxsz)
 299 #define NFS4_enc_lookup_root_sz (compound_encode_hdr_maxsz + \
 300                                 encode_putrootfh_maxsz + \
 301                                 encode_getattr_maxsz + \
 302                                 encode_getfh_maxsz)
 303 #define NFS4_dec_lookup_root_sz (compound_decode_hdr_maxsz + \
 304                                 decode_putrootfh_maxsz + \
 305                                 decode_getattr_maxsz + \
 306                                 decode_getfh_maxsz)
 307 #define NFS4_enc_remove_sz      (compound_encode_hdr_maxsz + \
 308                                 encode_putfh_maxsz + \
 309                                 encode_remove_maxsz)
 310 #define NFS4_dec_remove_sz      (compound_decode_hdr_maxsz + \
 311                                 decode_putfh_maxsz + \
 312                                 op_decode_hdr_maxsz + 5)
 313 #define NFS4_enc_rename_sz      (compound_encode_hdr_maxsz + \
 314                                 encode_putfh_maxsz + \
 315                                 encode_savefh_maxsz + \
 316                                 encode_putfh_maxsz + \
 317                                 encode_rename_maxsz)
 318 #define NFS4_dec_rename_sz      (compound_decode_hdr_maxsz + \
 319                                 decode_putfh_maxsz + \
 320                                 decode_savefh_maxsz + \
 321                                 decode_putfh_maxsz + \
 322                                 decode_rename_maxsz)
 323 #define NFS4_enc_link_sz        (compound_encode_hdr_maxsz + \
 324                                 encode_putfh_maxsz + \
 325                                 encode_savefh_maxsz + \
 326                                 encode_putfh_maxsz + \
 327                                 encode_link_maxsz)
 328 #define NFS4_dec_link_sz        (compound_decode_hdr_maxsz + \
 329                                 decode_putfh_maxsz + \
 330                                 decode_savefh_maxsz + \
 331                                 decode_putfh_maxsz + \
 332                                 decode_link_maxsz)
 333 #define NFS4_enc_symlink_sz     (compound_encode_hdr_maxsz + \
 334                                 encode_putfh_maxsz + \
 335                                 encode_symlink_maxsz + \
 336                                 encode_getattr_maxsz + \
 337                                 encode_getfh_maxsz)
 338 #define NFS4_dec_symlink_sz     (compound_decode_hdr_maxsz + \
 339                                 decode_putfh_maxsz + \
 340                                 decode_symlink_maxsz + \
 341                                 decode_getattr_maxsz + \
 342                                 decode_getfh_maxsz)
 343 #define NFS4_enc_create_sz      (compound_encode_hdr_maxsz + \
 344                                 encode_putfh_maxsz + \
 345                                 encode_savefh_maxsz + \
 346                                 encode_create_maxsz + \
 347                                 encode_getfh_maxsz + \
 348                                 encode_getattr_maxsz + \
 349                                 encode_restorefh_maxsz + \
 350                                 encode_getattr_maxsz)
 351 #define NFS4_dec_create_sz      (compound_decode_hdr_maxsz + \
 352                                 decode_putfh_maxsz + \
 353                                 decode_savefh_maxsz + \
 354                                 decode_create_maxsz + \
 355                                 decode_getfh_maxsz + \
 356                                 decode_getattr_maxsz + \
 357                                 decode_restorefh_maxsz + \
 358                                 decode_getattr_maxsz)
 359 #define NFS4_enc_pathconf_sz    (compound_encode_hdr_maxsz + \
 360                                 encode_putfh_maxsz + \
 361                                 encode_getattr_maxsz)
 362 #define NFS4_dec_pathconf_sz    (compound_decode_hdr_maxsz + \
 363                                 decode_putfh_maxsz + \
 364                                 decode_getattr_maxsz)
 365 #define NFS4_enc_statfs_sz      (compound_encode_hdr_maxsz + \
 366                                 encode_putfh_maxsz + \
 367                                 encode_getattr_maxsz)
 368 #define NFS4_dec_statfs_sz      (compound_decode_hdr_maxsz + \
 369                                 decode_putfh_maxsz + \
 370                                 op_decode_hdr_maxsz + 12)
 371 #define NFS4_enc_server_caps_sz (compound_encode_hdr_maxsz + \
 372                                 encode_getattr_maxsz)
 373 #define NFS4_dec_server_caps_sz (compound_decode_hdr_maxsz + \
 374                                 decode_getattr_maxsz)
 375 #define NFS4_enc_delegreturn_sz (compound_encode_hdr_maxsz + \
 376                                 encode_putfh_maxsz + \
 377                                 encode_delegreturn_maxsz)
 378 #define NFS4_dec_delegreturn_sz (compound_decode_hdr_maxsz + \
 379                                 decode_delegreturn_maxsz)
 380 #define NFS4_enc_getacl_sz      (compound_encode_hdr_maxsz + \
 381                                 encode_putfh_maxsz + \
 382                                 encode_getattr_maxsz)
 383 #define NFS4_dec_getacl_sz      (compound_decode_hdr_maxsz + \
 384                                 decode_putfh_maxsz + \
 385                                 op_decode_hdr_maxsz + \
 386                                 nfs4_fattr_bitmap_maxsz + 1)
 387 #define NFS4_enc_setacl_sz      (compound_encode_hdr_maxsz + \
 388                                 encode_putfh_maxsz + \
 389                                 op_encode_hdr_maxsz + 4 + \
 390                                 nfs4_fattr_bitmap_maxsz + 1)
 391 #define NFS4_dec_setacl_sz      (compound_decode_hdr_maxsz + \
 392                                 decode_putfh_maxsz + \
 393                                 op_decode_hdr_maxsz + nfs4_fattr_bitmap_maxsz)
 394
 395 static struct {
 396         unsigned int    mode;
 397         unsigned int    nfs2type;
 398 } nfs_type2fmt[] = {
 399         { 0,            NFNON        },
 400         { S_IFREG,      NFREG        },
 401         { S_IFDIR,      NFDIR        },
 402         { S_IFBLK,      NFBLK        },
 403         { S_IFCHR,      NFCHR        },
 404         { S_IFLNK,      NFLNK        },
 405         { S_IFSOCK,     NFSOCK       },
 406         { S_IFIFO,      NFFIFO       },
 407         { 0,            NFNON        },
 408         { 0,            NFNON        },
 409 };
 410
 411 struct compound_hdr {
 412         int32_t         status;
 413         uint32_t        nops;
 414         uint32_t        taglen;
 415         char *          tag;
 416 };
 417
 418 /*
 419  * START OF "GENERIC" ENCODE ROUTINES.
 420  *   These may look a little ugly since they are imported from a "generic"
 421  * set of XDR encode/decode routines which are intended to be shared by
 422  * all of our NFSv4 implementations (OpenBSD, MacOS X...).
 423  *
 424  * If the pain of reading these is too great, it should be a straightforward
 425  * task to translate them into Linux-specific versions which are more
 426  * consistent with the style used in NFSv2/v3...
 427  */
 428 #define WRITE32(n)               *p++ = htonl(n)
 429 #define WRITE64(n)               do {                           \
 430         *p++ = htonl((uint32_t)((n) >> 32));                            \
 431         *p++ = htonl((uint32_t)(n));                                    \
 432 } while (0)
 433 #define WRITEMEM(ptr,nbytes)     do {                           \
 434         p = xdr_encode_opaque_fixed(p, ptr, nbytes);            \
 435 } while (0)
 436
 437 #define RESERVE_SPACE(nbytes)   do {                            \
 438         p = xdr_reserve_space(xdr, nbytes);                     \
 439         if (!p) printk("RESERVE_SPACE(%d) failed in function %s\n", (int) (nbytes), __FUNCTION__); \
 440         BUG_ON(!p);                                             \
 441 } while (0)
 442
 443 static void encode_string(struct xdr_stream *xdr, unsigned int len, const char *str)
 444 {
 445         uint32_t *p;
 446
 447         p = xdr_reserve_space(xdr, 4 + len);
 448         BUG_ON(p == NULL);
 449         xdr_encode_opaque(p, str, len);
 450 }
 451
 452 static int encode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr)
 453 {
 454         uint32_t *p;
 455
 456         dprintk("encode_compound: tag=%.*s\n", (int)hdr->taglen, hdr->tag);
 457         BUG_ON(hdr->taglen > NFS4_MAXTAGLEN);
 458         RESERVE_SPACE(12+(XDR_QUADLEN(hdr->taglen)<<2));
 459         WRITE32(hdr->taglen);
 460         WRITEMEM(hdr->tag, hdr->taglen);
 461         WRITE32(NFS4_MINOR_VERSION);
 462         WRITE32(hdr->nops);
 463         return 0;
 464 }
 465
 466 static void encode_nfs4_verifier(struct xdr_stream *xdr, const nfs4_verifier *verf)
 467 {
 468         uint32_t *p;
 469
 470         p = xdr_reserve_space(xdr, NFS4_VERIFIER_SIZE);
 471         BUG_ON(p == NULL);
 472         xdr_encode_opaque_fixed(p, verf->data, NFS4_VERIFIER_SIZE);
 473 }
 474
 475 static int encode_attrs(struct xdr_stream *xdr, const struct iattr *iap, const struct nfs_server *server)
 476 {
 477         char owner_name[IDMAP_NAMESZ];
 478         char owner_group[IDMAP_NAMESZ];
 479         int owner_namelen = 0;
 480         int owner_grouplen = 0;
 481         uint32_t *p;
 482         uint32_t *q;
 483         int len;
 484         uint32_t bmval0 = 0;
 485         uint32_t bmval1 = 0;
 486         int status;
 487
 488         /*
 489          * We reserve enough space to write the entire attribute buffer at once.
 490          * In the worst-case, this would be
 491          *   12(bitmap) + 4(attrlen) + 8(size) + 4(mode) + 4(atime) + 4(mtime)
 492          *          = 36 bytes, plus any contribution from variable-length fields
 493          *            such as owner/group.
 494          */
 495         len = 16;
 496
 497         /* Sigh */
 498         if (iap->ia_valid & ATTR_SIZE)
 499                 len += 8;
 500         if (iap->ia_valid & ATTR_MODE)
 501                 len += 4;
 502         if (iap->ia_valid & ATTR_UID) {
 503                 owner_namelen = nfs_map_uid_to_name(server->nfs4_state, iap->ia_uid, owner_name);
 504                 if (owner_namelen < 0) {
 505                         printk(KERN_WARNING "nfs: couldn't resolve uid %d to string\n",
 506                                iap->ia_uid);
 507                         /* XXX */
 508                         strcpy(owner_name, "nobody");
 509                         owner_namelen = sizeof("nobody") - 1;
 510                         /* goto out; */
 511                 }
 512                 len += 4 + (XDR_QUADLEN(owner_namelen) << 2);
 513         }
 514         if (iap->ia_valid & ATTR_GID) {
 515                 owner_grouplen = nfs_map_gid_to_group(server->nfs4_state, iap->ia_gid, owner_group);
 516                 if (owner_grouplen < 0) {
 517                         printk(KERN_WARNING "nfs4: couldn't resolve gid %d to string\n",
 518                                iap->ia_gid);
 519                         strcpy(owner_group, "nobody");
 520                         owner_grouplen = sizeof("nobody") - 1;
 521                         /* goto out; */
 522                 }
 523                 len += 4 + (XDR_QUADLEN(owner_grouplen) << 2);
 524         }
 525         if (iap->ia_valid & ATTR_ATIME_SET)
 526                 len += 16;
 527         else if (iap->ia_valid & ATTR_ATIME)
 528                 len += 4;
 529         if (iap->ia_valid & ATTR_MTIME_SET)
 530                 len += 16;
 531         else if (iap->ia_valid & ATTR_MTIME)
 532                 len += 4;
 533         RESERVE_SPACE(len);
 534
 535         /*
 536          * We write the bitmap length now, but leave the bitmap and the attribute
 537          * buffer length to be backfilled at the end of this routine.
 538          */
 539         WRITE32(2);
 540         q = p;
 541         p += 3;
 542
 543         if (iap->ia_valid & ATTR_SIZE) {
 544                 bmval0 |= FATTR4_WORD0_SIZE;
 545                 WRITE64(iap->ia_size);
 546         }
 547         if (iap->ia_valid & ATTR_MODE) {
 548                 bmval1 |= FATTR4_WORD1_MODE;
 549                 WRITE32(iap->ia_mode);
 550         }
 551         if (iap->ia_valid & ATTR_UID) {
 552                 bmval1 |= FATTR4_WORD1_OWNER;
 553                 WRITE32(owner_namelen);
 554                 WRITEMEM(owner_name, owner_namelen);
 555         }
 556         if (iap->ia_valid & ATTR_GID) {
 557                 bmval1 |= FATTR4_WORD1_OWNER_GROUP;
 558                 WRITE32(owner_grouplen);
 559                 WRITEMEM(owner_group, owner_grouplen);
 560         }
 561         if (iap->ia_valid & ATTR_ATIME_SET) {
 562                 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET;
 563                 WRITE32(NFS4_SET_TO_CLIENT_TIME);
 564                 WRITE32(0);
 565                 WRITE32(iap->ia_mtime.tv_sec);
 566                 WRITE32(iap->ia_mtime.tv_nsec);
 567         }
 568         else if (iap->ia_valid & ATTR_ATIME) {
 569                 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET;
 570                 WRITE32(NFS4_SET_TO_SERVER_TIME);
 571         }
 572         if (iap->ia_valid & ATTR_MTIME_SET) {
 573                 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET;
 574                 WRITE32(NFS4_SET_TO_CLIENT_TIME);
 575                 WRITE32(0);
 576                 WRITE32(iap->ia_mtime.tv_sec);
 577                 WRITE32(iap->ia_mtime.tv_nsec);
 578         }
 579         else if (iap->ia_valid & ATTR_MTIME) {
 580                 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET;
 581                 WRITE32(NFS4_SET_TO_SERVER_TIME);
 582         }
 583
 584         /*
 585          * Now we backfill the bitmap and the attribute buffer length.
 586          */
 587         if (len != ((char *)p - (char *)q) + 4) {
 588                 printk ("encode_attr: Attr length calculation error! %u != %Zu\n",
 589                                 len, ((char *)p - (char *)q) + 4);
 590                 BUG();
 591         }
 592         len = (char *)p - (char *)q - 12;
 593         *q++ = htonl(bmval0);
 594         *q++ = htonl(bmval1);
 595         *q++ = htonl(len);
 596
 597         status = 0;
 598 /* out: */
 599         return status;
 600 }
 601
 602 static int encode_access(struct xdr_stream *xdr, u32 access)
 603 {
 604         uint32_t *p;
 605
 606         RESERVE_SPACE(8);
 607         WRITE32(OP_ACCESS);
 608         WRITE32(access);
 609
 610         return 0;
 611 }
 612
 613 static int encode_close(struct xdr_stream *xdr, const struct nfs_closeargs *arg)
 614 {
 615         uint32_t *p;
 616
 617         RESERVE_SPACE(8+sizeof(arg->stateid->data));
 618         WRITE32(OP_CLOSE);
 619         WRITE32(arg->seqid->sequence->counter);
 620         WRITEMEM(arg->stateid->data, sizeof(arg->stateid->data));
 621
 622         return 0;
 623 }
 624
 625 static int encode_commit(struct xdr_stream *xdr, const struct nfs_writeargs *args)
 626 {
 627         uint32_t *p;
 628
 629         RESERVE_SPACE(16);
 630         WRITE32(OP_COMMIT);
 631         WRITE64(args->offset);
 632         WRITE32(args->count);
 633
 634         return 0;
 635 }
 636
 637 static int encode_create(struct xdr_stream *xdr, const struct nfs4_create_arg *create)
 638 {
 639         uint32_t *p;
 640
 641         RESERVE_SPACE(8);
 642         WRITE32(OP_CREATE);
 643         WRITE32(create->ftype);
 644
 645         switch (create->ftype) {
 646         case NF4LNK:
 647                 RESERVE_SPACE(4 + create->u.symlink->len);
 648                 WRITE32(create->u.symlink->len);
 649                 WRITEMEM(create->u.symlink->name, create->u.symlink->len);
 650                 break;
 651
 652         case NF4BLK: case NF4CHR:
 653                 RESERVE_SPACE(8);
 654                 WRITE32(create->u.device.specdata1);
 655                 WRITE32(create->u.device.specdata2);
 656                 break;
 657
 658         default:
 659                 break;
 660         }
 661
 662         RESERVE_SPACE(4 + create->name->len);
 663         WRITE32(create->name->len);
 664         WRITEMEM(create->name->name, create->name->len);
 665
 666         return encode_attrs(xdr, create->attrs, create->server);
 667 }
 668
 669 static int encode_getattr_one(struct xdr_stream *xdr, uint32_t bitmap)
 670 {
 671         uint32_t *p;
 672
 673         RESERVE_SPACE(12);
 674         WRITE32(OP_GETATTR);
 675         WRITE32(1);
 676         WRITE32(bitmap);
 677         return 0;
 678 }
 679
 680 static int encode_getattr_two(struct xdr_stream *xdr, uint32_t bm0, uint32_t bm1)
 681 {
 682         uint32_t *p;
 683
 684         RESERVE_SPACE(16);
 685         WRITE32(OP_GETATTR);
 686         WRITE32(2);
 687         WRITE32(bm0);
 688         WRITE32(bm1);
 689         return 0;
 690 }
 691
 692 static int encode_getfattr(struct xdr_stream *xdr, const u32* bitmask)
 693 {
 694         return encode_getattr_two(xdr,
 695                         bitmask[0] & nfs4_fattr_bitmap[0],
 696                         bitmask[1] & nfs4_fattr_bitmap[1]);
 697 }
 698
 699 static int encode_fsinfo(struct xdr_stream *xdr, const u32* bitmask)
 700 {
 701         return encode_getattr_two(xdr, bitmask[0] & nfs4_fsinfo_bitmap[0],
 702                         bitmask[1] & nfs4_fsinfo_bitmap[1]);
 703 }
 704
 705 static int encode_getfh(struct xdr_stream *xdr)
 706 {
 707         uint32_t *p;
 708
 709         RESERVE_SPACE(4);
 710         WRITE32(OP_GETFH);
 711
 712         return 0;
 713 }
 714
 715 static int encode_link(struct xdr_stream *xdr, const struct qstr *name)
 716 {
 717         uint32_t *p;
 718
 719         RESERVE_SPACE(8 + name->len);
 720         WRITE32(OP_LINK);
 721         WRITE32(name->len);
 722         WRITEMEM(name->name, name->len);
 723
 724         return 0;
 725 }
 726
 727 /*
 728  * opcode,type,reclaim,offset,length,new_lock_owner = 32
 729  * open_seqid,open_stateid,lock_seqid,lock_owner.clientid, lock_owner.id = 40
 730  */
 731 static int encode_lock(struct xdr_stream *xdr, const struct nfs_lockargs *arg)
 732 {
 733         uint32_t *p;
 734         struct nfs_lock_opargs *opargs = arg->u.lock;
 735
 736         RESERVE_SPACE(32);
 737         WRITE32(OP_LOCK);
 738         WRITE32(arg->type);
 739         WRITE32(opargs->reclaim);
 740         WRITE64(arg->offset);
 741         WRITE64(arg->length);
 742         WRITE32(opargs->new_lock_owner);
 743         if (opargs->new_lock_owner){
 744                 RESERVE_SPACE(40);
 745                 WRITE32(opargs->open_seqid->sequence->counter);
 746                 WRITEMEM(opargs->open_stateid->data, sizeof(opargs->open_stateid->data));
 747                 WRITE32(opargs->lock_seqid->sequence->counter);
 748                 WRITE64(opargs->lock_owner.clientid);
 749                 WRITE32(4);
 750                 WRITE32(opargs->lock_owner.id);
 751         }
 752         else {
 753                 RESERVE_SPACE(20);
 754                 WRITEMEM(opargs->lock_stateid->data, sizeof(opargs->lock_stateid->data));
 755                 WRITE32(opargs->lock_seqid->sequence->counter);
 756         }
 757
 758         return 0;
 759 }
 760
 761 static int encode_lockt(struct xdr_stream *xdr, const struct nfs_lockargs *arg)
 762 {
 763         uint32_t *p;
 764         struct nfs_lowner *opargs = arg->u.lockt;
 765
 766         RESERVE_SPACE(40);
 767         WRITE32(OP_LOCKT);
 768         WRITE32(arg->type);
 769         WRITE64(arg->offset);
 770         WRITE64(arg->length);
 771         WRITE64(opargs->clientid);
 772         WRITE32(4);
 773         WRITE32(opargs->id);
 774
 775         return 0;
 776 }
 777
 778 static int encode_locku(struct xdr_stream *xdr, const struct nfs_lockargs *arg)
 779 {
 780         uint32_t *p;
 781         struct nfs_locku_opargs *opargs = arg->u.locku;
 782
 783         RESERVE_SPACE(44);
 784         WRITE32(OP_LOCKU);
 785         WRITE32(arg->type);
 786         WRITE32(opargs->seqid->sequence->counter);
 787         WRITEMEM(opargs->stateid->data, sizeof(opargs->stateid->data));
 788         WRITE64(arg->offset);
 789         WRITE64(arg->length);
 790
 791         return 0;
 792 }
 793
 794 static int encode_lookup(struct xdr_stream *xdr, const struct qstr *name)
 795 {
 796         int len = name->len;
 797         uint32_t *p;
 798
 799         RESERVE_SPACE(8 + len);
 800         WRITE32(OP_LOOKUP);
 801         WRITE32(len);
 802         WRITEMEM(name->name, len);
 803
 804         return 0;
 805 }
 806
 807 static void encode_share_access(struct xdr_stream *xdr, int open_flags)
 808 {
 809         uint32_t *p;
 810
 811         RESERVE_SPACE(8);
 812         switch (open_flags & (FMODE_READ|FMODE_WRITE)) {
 813                 case FMODE_READ:
 814                         WRITE32(NFS4_SHARE_ACCESS_READ);
 815                         break;
 816                 case FMODE_WRITE:
 817                         WRITE32(NFS4_SHARE_ACCESS_WRITE);
 818                         break;
 819                 case FMODE_READ|FMODE_WRITE:
 820                         WRITE32(NFS4_SHARE_ACCESS_BOTH);
 821                         break;
 822                 default:
 823                         BUG();
 824         }
 825         WRITE32(0);             /* for linux, share_deny = 0 always */
 826 }
 827
 828 static inline void encode_openhdr(struct xdr_stream *xdr, const struct nfs_openargs *arg)
 829 {
 830         uint32_t *p;
 831  /*
 832  * opcode 4, seqid 4, share_access 4, share_deny 4, clientid 8, ownerlen 4,
 833  * owner 4 = 32
 834  */
 835         RESERVE_SPACE(8);
 836         WRITE32(OP_OPEN);
 837         WRITE32(arg->seqid->sequence->counter);
 838         encode_share_access(xdr, arg->open_flags);
 839         RESERVE_SPACE(16);
 840         WRITE64(arg->clientid);
 841         WRITE32(4);
 842         WRITE32(arg->id);
 843 }
 844
 845 static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_openargs *arg)
 846 {
 847         uint32_t *p;
 848
 849         RESERVE_SPACE(4);
 850         switch(arg->open_flags & O_EXCL) {
 851                 case 0:
 852                         WRITE32(NFS4_CREATE_UNCHECKED);
 853                         encode_attrs(xdr, arg->u.attrs, arg->server);
 854                         break;
 855                 default:
 856                         WRITE32(NFS4_CREATE_EXCLUSIVE);
 857                         encode_nfs4_verifier(xdr, &arg->u.verifier);
 858         }
 859 }
 860
 861 static void encode_opentype(struct xdr_stream *xdr, const struct nfs_openargs *arg)
 862 {
 863         uint32_t *p;
 864
 865         RESERVE_SPACE(4);
 866         switch (arg->open_flags & O_CREAT) {
 867                 case 0:
 868                         WRITE32(NFS4_OPEN_NOCREATE);
 869                         break;
 870                 default:
 871                         BUG_ON(arg->claim != NFS4_OPEN_CLAIM_NULL);
 872                         WRITE32(NFS4_OPEN_CREATE);
 873                         encode_createmode(xdr, arg);
 874         }
 875 }
 876
 877 static inline void encode_delegation_type(struct xdr_stream *xdr, int delegation_type)
 878 {
 879         uint32_t *p;
 880
 881         RESERVE_SPACE(4);
 882         switch (delegation_type) {
 883                 case 0:
 884                         WRITE32(NFS4_OPEN_DELEGATE_NONE);
 885                         break;
 886                 case FMODE_READ:
 887                         WRITE32(NFS4_OPEN_DELEGATE_READ);
 888                         break;
 889                 case FMODE_WRITE|FMODE_READ:
 890                         WRITE32(NFS4_OPEN_DELEGATE_WRITE);
 891                         break;
 892                 default:
 893                         BUG();
 894         }
 895 }
 896
 897 static inline void encode_claim_null(struct xdr_stream *xdr, const struct qstr *name)
 898 {
 899         uint32_t *p;
 900
 901         RESERVE_SPACE(4);
 902         WRITE32(NFS4_OPEN_CLAIM_NULL);
 903         encode_string(xdr, name->len, name->name);
 904 }
 905
 906 static inline void encode_claim_previous(struct xdr_stream *xdr, int type)
 907 {
 908         uint32_t *p;
 909
 910         RESERVE_SPACE(4);
 911         WRITE32(NFS4_OPEN_CLAIM_PREVIOUS);
 912         encode_delegation_type(xdr, type);
 913 }
 914
 915 static inline void encode_claim_delegate_cur(struct xdr_stream *xdr, const struct qstr *name, const nfs4_stateid *stateid)
 916 {
 917         uint32_t *p;
 918
 919         RESERVE_SPACE(4+sizeof(stateid->data));
 920         WRITE32(NFS4_OPEN_CLAIM_DELEGATE_CUR);
 921         WRITEMEM(stateid->data, sizeof(stateid->data));
 922         encode_string(xdr, name->len, name->name);
 923 }
 924
 925 static int encode_open(struct xdr_stream *xdr, const struct nfs_openargs *arg)
 926 {
 927         encode_openhdr(xdr, arg);
 928         encode_opentype(xdr, arg);
 929         switch (arg->claim) {
 930                 case NFS4_OPEN_CLAIM_NULL:
 931                         encode_claim_null(xdr, arg->name);
 932                         break;
 933                 case NFS4_OPEN_CLAIM_PREVIOUS:
 934                         encode_claim_previous(xdr, arg->u.delegation_type);
 935                         break;
 936                 case NFS4_OPEN_CLAIM_DELEGATE_CUR:
 937                         encode_claim_delegate_cur(xdr, arg->name, &arg->u.delegation);
 938                         break;
 939                 default:
 940                         BUG();
 941         }
 942         return 0;
 943 }
 944
 945 static int encode_open_confirm(struct xdr_stream *xdr, const struct nfs_open_confirmargs *arg)
 946 {
 947         uint32_t *p;
 948
 949         RESERVE_SPACE(8+sizeof(arg->stateid.data));
 950         WRITE32(OP_OPEN_CONFIRM);
 951         WRITEMEM(arg->stateid.data, sizeof(arg->stateid.data));
 952         WRITE32(arg->seqid->sequence->counter);
 953
 954         return 0;
 955 }
 956
 957 static int encode_open_downgrade(struct xdr_stream *xdr, const struct nfs_closeargs *arg)
 958 {
 959         uint32_t *p;
 960
 961         RESERVE_SPACE(8+sizeof(arg->stateid->data));
 962         WRITE32(OP_OPEN_DOWNGRADE);
 963         WRITEMEM(arg->stateid->data, sizeof(arg->stateid->data));
 964         WRITE32(arg->seqid->sequence->counter);
 965         encode_share_access(xdr, arg->open_flags);
 966         return 0;
 967 }
 968
 969 static int
 970 encode_putfh(struct xdr_stream *xdr, const struct nfs_fh *fh)
 971 {
 972         int len = fh->size;
 973         uint32_t *p;
 974
 975         RESERVE_SPACE(8 + len);
 976         WRITE32(OP_PUTFH);
 977         WRITE32(len);
 978         WRITEMEM(fh->data, len);
 979
 980         return 0;
 981 }
 982
 983 static int encode_putrootfh(struct xdr_stream *xdr)
 984 {
 985         uint32_t *p;
 986
 987         RESERVE_SPACE(4);
 988         WRITE32(OP_PUTROOTFH);
 989
 990         return 0;
 991 }
 992
 993 static void encode_stateid(struct xdr_stream *xdr, const struct nfs_open_context *ctx)
 994 {
 995         nfs4_stateid stateid;
 996         uint32_t *p;
 997
 998         RESERVE_SPACE(16);
 999         if (ctx->state != NULL) {
1000                 nfs4_copy_stateid(&stateid, ctx->state, ctx->lockowner);
1001                 WRITEMEM(stateid.data, sizeof(stateid.data));
1002         } else
1003                 WRITEMEM(zero_stateid.data, sizeof(zero_stateid.data));
1004 }
1005
1006 static int encode_read(struct xdr_stream *xdr, const struct nfs_readargs *args)
1007 {
1008         uint32_t *p;
1009
1010         RESERVE_SPACE(4);
1011         WRITE32(OP_READ);
1012
1013         encode_stateid(xdr, args->context);
1014
1015         RESERVE_SPACE(12);
1016         WRITE64(args->offset);
1017         WRITE32(args->count);
1018
1019         return 0;
1020 }
1021
1022 static int encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg *readdir, struct rpc_rqst *req)
1023 {
1024         struct rpc_auth *auth = req->rq_task->tk_auth;
1025         uint32_t attrs[2] = {
1026                 FATTR4_WORD0_RDATTR_ERROR|FATTR4_WORD0_FILEID,
1027                 FATTR4_WORD1_MOUNTED_ON_FILEID,
1028         };
1029         int replen;
1030         uint32_t *p;
1031
1032         RESERVE_SPACE(32+sizeof(nfs4_verifier));
1033         WRITE32(OP_READDIR);
1034         WRITE64(readdir->cookie);
1035         WRITEMEM(readdir->verifier.data, sizeof(readdir->verifier.data));
1036         WRITE32(readdir->count >> 1);  /* We're not doing readdirplus */
1037         WRITE32(readdir->count);
1038         WRITE32(2);
1039         /* Switch to mounted_on_fileid if the server supports it */
1040         if (readdir->bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)
1041                 attrs[0] &= ~FATTR4_WORD0_FILEID;
1042         else
1043                 attrs[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
1044         WRITE32(attrs[0] & readdir->bitmask[0]);
1045         WRITE32(attrs[1] & readdir->bitmask[1]);
1046         dprintk("%s: cookie = %Lu, verifier = 0x%x%x, bitmap = 0x%x%x\n",
1047                         __FUNCTION__,
1048                         (unsigned long long)readdir->cookie,
1049                         ((u32 *)readdir->verifier.data)[0],
1050                         ((u32 *)readdir->verifier.data)[1],
1051                         attrs[0] & readdir->bitmask[0],
1052                         attrs[1] & readdir->bitmask[1]);
1053
1054         /* set up reply kvec
1055          *    toplevel_status + taglen + rescount + OP_PUTFH + status
1056          *      + OP_READDIR + status + verifer(2)  = 9
1057          */
1058         replen = (RPC_REPHDRSIZE + auth->au_rslack + 9) << 2;
1059         xdr_inline_pages(&req->rq_rcv_buf, replen, readdir->pages,
1060                          readdir->pgbase, readdir->count);
1061         dprintk("%s: inlined page args = (%u, %p, %u, %u)\n",
1062                         __FUNCTION__, replen, readdir->pages,
1063                         readdir->pgbase, readdir->count);
1064
1065         return 0;
1066 }
1067
1068 static int encode_readlink(struct xdr_stream *xdr, const struct nfs4_readlink *readlink, struct rpc_rqst *req)
1069 {
1070         struct rpc_auth *auth = req->rq_task->tk_auth;
1071         unsigned int replen;
1072         uint32_t *p;
1073
1074         RESERVE_SPACE(4);
1075         WRITE32(OP_READLINK);
1076
1077         /* set up reply kvec
1078          *    toplevel_status + taglen + rescount + OP_PUTFH + status
1079          *      + OP_READLINK + status + string length = 8
1080          */
1081         replen = (RPC_REPHDRSIZE + auth->au_rslack + 8) << 2;
1082         xdr_inline_pages(&req->rq_rcv_buf, replen, readlink->pages,
1083                         readlink->pgbase, readlink->pglen);
1084
1085         return 0;
1086 }
1087
1088 static int encode_remove(struct xdr_stream *xdr, const struct qstr *name)
1089 {
1090         uint32_t *p;
1091
1092         RESERVE_SPACE(8 + name->len);
1093         WRITE32(OP_REMOVE);
1094         WRITE32(name->len);
1095         WRITEMEM(name->name, name->len);
1096
1097         return 0;
1098 }
1099
1100 static int encode_rename(struct xdr_stream *xdr, const struct qstr *oldname, const struct qstr *newname)
1101 {
1102         uint32_t *p;
1103
1104         RESERVE_SPACE(8 + oldname->len);
1105         WRITE32(OP_RENAME);
1106         WRITE32(oldname->len);
1107         WRITEMEM(oldname->name, oldname->len);
1108
1109         RESERVE_SPACE(4 + newname->len);
1110         WRITE32(newname->len);
1111         WRITEMEM(newname->name, newname->len);
1112
1113         return 0;
1114 }
1115
1116 static int encode_renew(struct xdr_stream *xdr, const struct nfs4_client *client_stateid)
1117 {
1118         uint32_t *p;
1119
1120         RESERVE_SPACE(12);
1121         WRITE32(OP_RENEW);
1122         WRITE64(client_stateid->cl_clientid);
1123
1124         return 0;
1125 }
1126
1127 static int
1128 encode_restorefh(struct xdr_stream *xdr)
1129 {
1130         uint32_t *p;
1131
1132         RESERVE_SPACE(4);
1133         WRITE32(OP_RESTOREFH);
1134
1135         return 0;
1136 }
1137
1138 static int
1139 encode_setacl(struct xdr_stream *xdr, struct nfs_setaclargs *arg)
1140 {
1141         uint32_t *p;
1142
1143         RESERVE_SPACE(4+sizeof(zero_stateid.data));
1144         WRITE32(OP_SETATTR);
1145         WRITEMEM(zero_stateid.data, sizeof(zero_stateid.data));
1146         RESERVE_SPACE(2*4);
1147         WRITE32(1);
1148         WRITE32(FATTR4_WORD0_ACL);
1149         if (arg->acl_len % 4)
1150                 return -EINVAL;
1151         RESERVE_SPACE(4);
1152         WRITE32(arg->acl_len);
1153         xdr_write_pages(xdr, arg->acl_pages, arg->acl_pgbase, arg->acl_len);
1154         return 0;
1155 }
1156
1157 static int
1158 encode_savefh(struct xdr_stream *xdr)
1159 {
1160         uint32_t *p;
1161
1162         RESERVE_SPACE(4);
1163         WRITE32(OP_SAVEFH);
1164
1165         return 0;
1166 }
1167
1168 static int encode_setattr(struct xdr_stream *xdr, const struct nfs_setattrargs *arg, const struct nfs_server *server)
1169 {
1170         int status;
1171         uint32_t *p;
1172
1173         RESERVE_SPACE(4+sizeof(arg->stateid.data));
1174         WRITE32(OP_SETATTR);
1175         WRITEMEM(arg->stateid.data, sizeof(arg->stateid.data));
1176
1177         if ((status = encode_attrs(xdr, arg->iap, server)))
1178                 return status;
1179
1180         return 0;
1181 }
1182
1183 static int encode_setclientid(struct xdr_stream *xdr, const struct nfs4_setclientid *setclientid)
1184 {
1185         uint32_t *p;
1186
1187         RESERVE_SPACE(4 + sizeof(setclientid->sc_verifier->data));
1188         WRITE32(OP_SETCLIENTID);
1189         WRITEMEM(setclientid->sc_verifier->data, sizeof(setclientid->sc_verifier->data));
1190
1191         encode_string(xdr, setclientid->sc_name_len, setclientid->sc_name);
1192         RESERVE_SPACE(4);
1193         WRITE32(setclientid->sc_prog);
1194         encode_string(xdr, setclientid->sc_netid_len, setclientid->sc_netid);
1195         encode_string(xdr, setclientid->sc_uaddr_len, setclientid->sc_uaddr);
1196         RESERVE_SPACE(4);
1197         WRITE32(setclientid->sc_cb_ident);
1198
1199         return 0;
1200 }
1201
1202 static int encode_setclientid_confirm(struct xdr_stream *xdr, const struct nfs4_client *client_state)
1203 {
1204         uint32_t *p;
1205
1206         RESERVE_SPACE(12 + sizeof(client_state->cl_confirm.data));
1207         WRITE32(OP_SETCLIENTID_CONFIRM);
1208         WRITE64(client_state->cl_clientid);
1209         WRITEMEM(client_state->cl_confirm.data, sizeof(client_state->cl_confirm.data));
1210
1211         return 0;
1212 }
1213
1214 static int encode_write(struct xdr_stream *xdr, const struct nfs_writeargs *args)
1215 {
1216         uint32_t *p;
1217
1218         RESERVE_SPACE(4);
1219         WRITE32(OP_WRITE);
1220
1221         encode_stateid(xdr, args->context);
1222
1223         RESERVE_SPACE(16);
1224         WRITE64(args->offset);
1225         WRITE32(args->stable);
1226         WRITE32(args->count);
1227
1228         xdr_write_pages(xdr, args->pages, args->pgbase, args->count);
1229
1230         return 0;
1231 }
1232
1233 static int encode_delegreturn(struct xdr_stream *xdr, const nfs4_stateid *stateid)
1234 {
1235         uint32_t *p;
1236
1237         RESERVE_SPACE(20);
1238
1239         WRITE32(OP_DELEGRETURN);
1240         WRITEMEM(stateid->data, sizeof(stateid->data));
1241         return 0;
1242
1243 }
1244 /*
1245  * END OF "GENERIC" ENCODE ROUTINES.
1246  */
1247
1248 /*
1249  * Encode an ACCESS request
1250  */
1251 static int nfs4_xdr_enc_access(struct rpc_rqst *req, uint32_t *p, const struct nfs4_accessargs *args)
1252 {
1253         struct xdr_stream xdr;
1254         struct compound_hdr hdr = {
1255                 .nops = 2,
1256         };
1257         int status;
1258
1259         xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1260         encode_compound_hdr(&xdr, &hdr);
1261         if ((status = encode_putfh(&xdr, args->fh)) == 0)
1262                 status = encode_access(&xdr, args->access);
1263         return status;
1264 }
1265
1266 /*
1267  * Encode LOOKUP request
1268  */
1269 static int nfs4_xdr_enc_lookup(struct rpc_rqst *req, uint32_t *p, const struct nfs4_lookup_arg *args)
1270 {
1271         struct xdr_stream xdr;
1272         struct compound_hdr hdr = {
1273                 .nops = 4,
1274         };
1275         int status;
1276
1277         xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1278         encode_compound_hdr(&xdr, &hdr);
1279         if ((status = encode_putfh(&xdr, args->dir_fh)) != 0)
1280                 goto out;
1281         if ((status = encode_lookup(&xdr, args->name)) != 0)
1282                 goto out;
1283         if ((status = encode_getfh(&xdr)) != 0)
1284                 goto out;
1285         status = encode_getfattr(&xdr, args->bitmask);
1286 out:
1287         return status;
1288 }
1289
1290 /*
1291  * Encode LOOKUP_ROOT request
1292  */
1293 static int nfs4_xdr_enc_lookup_root(struct rpc_rqst *req, uint32_t *p, const struct nfs4_lookup_root_arg *args)
1294 {
1295         struct xdr_stream xdr;
1296         struct compound_hdr hdr = {
1297                 .nops = 3,
1298         };
1299         int status;
1300
1301         xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1302         encode_compound_hdr(&xdr, &hdr);
1303         if ((status = encode_putrootfh(&xdr)) != 0)
1304                 goto out;
1305         if ((status = encode_getfh(&xdr)) == 0)
1306                 status = encode_getfattr(&xdr, args->bitmask);
1307 out:
1308         return status;
1309 }
1310
1311 /*
1312  * Encode REMOVE request
1313  */
1314 static int nfs4_xdr_enc_remove(struct rpc_rqst *req, uint32_t *p, const struct nfs4_remove_arg *args)
1315 {
1316         struct xdr_stream xdr;
1317         struct compound_hdr hdr = {
1318                 .nops = 2,
1319         };
1320         int status;
1321
1322         xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1323         encode_compound_hdr(&xdr, &hdr);
1324         if ((status = encode_putfh(&xdr, args->fh)) == 0)
1325                 status = encode_remove(&xdr, args->name);
1326         return status;
1327 }
1328
1329 /*
1330  * Encode RENAME request
1331  */
1332 static int nfs4_xdr_enc_rename(struct rpc_rqst *req, uint32_t *p, const struct nfs4_rename_arg *args)
1333 {
1334         struct xdr_stream xdr;
1335         struct compound_hdr hdr = {
1336                 .nops = 4,
1337         };
1338         int status;
1339
1340         xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1341         encode_compound_hdr(&xdr, &hdr);
1342         if ((status = encode_putfh(&xdr, args->old_dir)) != 0)
1343                 goto out;
1344         if ((status = encode_savefh(&xdr)) != 0)
1345                 goto out;
1346         if ((status = encode_putfh(&xdr, args->new_dir)) != 0)
1347                 goto out;
1348         status = encode_rename(&xdr, args->old_name, args->new_name);
1349 out:
1350         return status;
1351 }
1352
1353 /*
1354  * Encode LINK request
1355  */
1356 static int nfs4_xdr_enc_link(struct rpc_rqst *req, uint32_t *p, const struct nfs4_link_arg *args)
1357 {
1358         struct xdr_stream xdr;
1359         struct compound_hdr hdr = {
1360                 .nops = 4,
1361         };
1362         int status;
1363
1364         xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1365         encode_compound_hdr(&xdr, &hdr);
1366         if ((status = encode_putfh(&xdr, args->fh)) != 0)
1367                 goto out;
1368         if ((status = encode_savefh(&xdr)) != 0)
1369                 goto out;
1370         if ((status = encode_putfh(&xdr, args->dir_fh)) != 0)
1371                 goto out;
1372         status = encode_link(&xdr, args->name);
1373 out:
1374         return status;
1375 }
1376
1377 /*
1378  * Encode CREATE request
1379  */
1380 static int nfs4_xdr_enc_create(struct rpc_rqst *req, uint32_t *p, const struct nfs4_create_arg *args)
1381 {
1382         struct xdr_stream xdr;
1383         struct compound_hdr hdr = {
1384                 .nops = 7,
1385         };
1386         int status;
1387
1388         xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1389         encode_compound_hdr(&xdr, &hdr);
1390         if ((status = encode_putfh(&xdr, args->dir_fh)) != 0)
1391                 goto out;
1392         if ((status = encode_savefh(&xdr)) != 0)
1393                 goto out;
1394         if ((status = encode_create(&xdr, args)) != 0)
1395                 goto out;
1396         if ((status = encode_getfh(&xdr)) != 0)
1397                 goto out;
1398         if ((status = encode_getfattr(&xdr, args->bitmask)) != 0)
1399                 goto out;
1400         if ((status = encode_restorefh(&xdr)) != 0)
1401                 goto out;
1402         status = encode_getfattr(&xdr, args->bitmask);
1403 out:
1404         return status;
1405 }
1406
1407 /*
1408  * Encode SYMLINK request
1409  */
1410 static int nfs4_xdr_enc_symlink(struct rpc_rqst *req, uint32_t *p, const struct nfs4_create_arg *args)
1411 {
1412         return nfs4_xdr_enc_create(req, p, args);
1413 }
1414
1415 /*
1416  * Encode GETATTR request
1417  */
1418 static int nfs4_xdr_enc_getattr(struct rpc_rqst *req, uint32_t *p, const struct nfs4_getattr_arg *args)
1419 {
1420         struct xdr_stream xdr;
1421         struct compound_hdr hdr = {
1422                 .nops = 2,
1423         };
1424         int status;
1425
1426         xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1427         encode_compound_hdr(&xdr, &hdr);
1428         if ((status = encode_putfh(&xdr, args->fh)) == 0)
1429                 status = encode_getfattr(&xdr, args->bitmask);
1430         return status;
1431 }
1432
1433 /*
1434  * Encode a CLOSE request
1435  */
1436 static int nfs4_xdr_enc_close(struct rpc_rqst *req, uint32_t *p, struct nfs_closeargs *args)
1437 {
1438         struct xdr_stream xdr;
1439         struct compound_hdr hdr = {
1440                 .nops   = 3,
1441         };
1442         int status;
1443
1444         xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1445         encode_compound_hdr(&xdr, &hdr);
1446         status = encode_putfh(&xdr, args->fh);
1447         if(status)
1448                 goto out;
1449         status = encode_close(&xdr, args);
1450         if (status != 0)
1451                 goto out;
1452         status = encode_getfattr(&xdr, args->bitmask);
1453 out:
1454         return status;
1455 }
1456
1457 /*
1458  * Encode an OPEN request
1459  */
1460 static int nfs4_xdr_enc_open(struct rpc_rqst *req, uint32_t *p, struct nfs_openargs *args)
1461 {
1462         struct xdr_stream xdr;
1463         struct compound_hdr hdr = {
1464                 .nops = 7,
1465         };
1466         int status;
1467
1468         status = nfs_wait_on_sequence(args->seqid, req->rq_task);
1469         if (status != 0)
1470                 goto out;
1471         xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1472         encode_compound_hdr(&xdr, &hdr);
1473         status = encode_putfh(&xdr, args->fh);
1474         if (status)
1475                 goto out;
1476         status = encode_savefh(&xdr);
1477         if (status)
1478                 goto out;
1479         status = encode_open(&xdr, args);
1480         if (status)
1481                 goto out;
1482         status = encode_getfh(&xdr);
1483         if (status)
1484                 goto out;
1485         status = encode_getfattr(&xdr, args->bitmask);
1486         if (status)
1487                 goto out;
1488         status = encode_restorefh(&xdr);
1489         if (status)
1490                 goto out;
1491         status = encode_getfattr(&xdr, args->bitmask);
1492 out:
1493         return status;
1494 }
1495
1496 /*
1497  * Encode an OPEN_CONFIRM request
1498  */
1499 static int nfs4_xdr_enc_open_confirm(struct rpc_rqst *req, uint32_t *p, struct nfs_open_confirmargs *args)
1500 {
1501         struct xdr_stream xdr;
1502         struct compound_hdr hdr = {
1503                 .nops   = 2,
1504         };
1505         int status;
1506
1507         status = nfs_wait_on_sequence(args->seqid, req->rq_task);
1508         if (status != 0)
1509                 goto out;
1510         xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1511         encode_compound_hdr(&xdr, &hdr);
1512         status = encode_putfh(&xdr, args->fh);
1513         if(status)
1514                 goto out;
1515         status = encode_open_confirm(&xdr, args);
1516 out:
1517         return status;
1518 }
1519
1520 /*
1521  * Encode an OPEN request with no attributes.
1522  */
1523 static int nfs4_xdr_enc_open_noattr(struct rpc_rqst *req, uint32_t *p, struct nfs_openargs *args)
1524 {
1525         struct xdr_stream xdr;
1526         struct compound_hdr hdr = {
1527                 .nops   = 2,
1528         };
1529         int status;
1530
1531         status = nfs_wait_on_sequence(args->seqid, req->rq_task);
1532         if (status != 0)
1533                 goto out;
1534         xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1535         encode_compound_hdr(&xdr, &hdr);
1536         status = encode_putfh(&xdr, args->fh);
1537         if (status)
1538                 goto out;
1539         status = encode_open(&xdr, args);
1540 out:
1541         return status;
1542 }
1543
1544 /*
1545  * Encode an OPEN_DOWNGRADE request
1546  */
1547 static int nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req, uint32_t *p, struct nfs_closeargs *args)
1548 {
1549         struct xdr_stream xdr;
1550         struct compound_hdr hdr = {
1551                 .nops   = 3,
1552         };
1553         int status;
1554
1555         xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1556         encode_compound_hdr(&xdr, &hdr);
1557         status = encode_putfh(&xdr, args->fh);
1558         if (status)
1559                 goto out;
1560         status = encode_open_downgrade(&xdr, args);
1561         if (status != 0)
1562                 goto out;
1563         status = encode_getfattr(&xdr, args->bitmask);
1564 out:
1565         return status;
1566 }
1567
1568 /*
1569  * Encode a LOCK request
1570  */
1571 static int nfs4_xdr_enc_lock(struct rpc_rqst *req, uint32_t *p, struct nfs_lockargs *args)
1572 {
1573         struct xdr_stream xdr;
1574         struct compound_hdr hdr = {
1575                 .nops   = 2,
1576         };
1577         struct nfs_lock_opargs *opargs = args->u.lock;
1578         int status;
1579
1580         status = nfs_wait_on_sequence(opargs->lock_seqid, req->rq_task);
1581         if (status != 0)
1582                 goto out;
1583         /* Do we need to do an open_to_lock_owner? */
1584         if (opargs->lock_seqid->sequence->flags & NFS_SEQID_CONFIRMED)
1585                 opargs->new_lock_owner = 0;
1586         xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1587         encode_compound_hdr(&xdr, &hdr);
1588         status = encode_putfh(&xdr, args->fh);
1589         if(status)
1590                 goto out;
1591         status = encode_lock(&xdr, args);
1592 out:
1593         return status;
1594 }
1595
1596 /*
1597  * Encode a LOCKT request
1598  */
1599 static int nfs4_xdr_enc_lockt(struct rpc_rqst *req, uint32_t *p, struct nfs_lockargs *args)
1600 {
1601         struct xdr_stream xdr;
1602         struct compound_hdr hdr = {
1603                 .nops   = 2,
1604         };
1605         int status;
1606
1607         xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1608         encode_compound_hdr(&xdr, &hdr);
1609         status = encode_putfh(&xdr, args->fh);
1610         if(status)
1611                 goto out;
1612         status = encode_lockt(&xdr, args);
1613 out:
1614         return status;
1615 }
1616
1617 /*
1618  * Encode a LOCKU request
1619  */
1620 static int nfs4_xdr_enc_locku(struct rpc_rqst *req, uint32_t *p, struct nfs_lockargs *args)
1621 {
1622         struct xdr_stream xdr;
1623         struct compound_hdr hdr = {
1624                 .nops   = 2,
1625         };
1626         int status;
1627
1628         xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1629         encode_compound_hdr(&xdr, &hdr);
1630         status = encode_putfh(&xdr, args->fh);
1631         if(status)
1632                 goto out;
1633         status = encode_locku(&xdr, args);
1634 out:
1635         return status;
1636 }
1637
1638 /*
1639  * Encode a READLINK request
1640  */
1641 static int nfs4_xdr_enc_readlink(struct rpc_rqst *req, uint32_t *p, const struct nfs4_readlink *args)
1642 {
1643         struct xdr_stream xdr;
1644         struct compound_hdr hdr = {
1645                 .nops = 2,
1646         };
1647         int status;
1648
1649         xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1650         encode_compound_hdr(&xdr, &hdr);
1651         status = encode_putfh(&xdr, args->fh);
1652         if(status)
1653                 goto out;
1654         status = encode_readlink(&xdr, args, req);
1655 out:
1656         return status;
1657 }
1658
1659 /*
1660  * Encode a READDIR request
1661  */
1662 static int nfs4_xdr_enc_readdir(struct rpc_rqst *req, uint32_t *p, const struct nfs4_readdir_arg *args)
1663 {
1664         struct xdr_stream xdr;
1665         struct compound_hdr hdr = {
1666                 .nops = 2,
1667         };
1668         int status;
1669
1670         xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1671         encode_compound_hdr(&xdr, &hdr);
1672         status = encode_putfh(&xdr, args->fh);
1673         if(status)
1674                 goto out;
1675         status = encode_readdir(&xdr, args, req);
1676 out:
1677         return status;
1678 }
1679
1680 /*
1681  * Encode a READ request
1682  */
1683 static int nfs4_xdr_enc_read(struct rpc_rqst *req, uint32_t *p, struct nfs_readargs *args)
1684 {
1685         struct rpc_auth *auth = req->rq_task->tk_auth;
1686         struct xdr_stream xdr;
1687         struct compound_hdr hdr = {
1688                 .nops = 2,
1689         };
1690         int replen, status;
1691
1692         xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1693         encode_compound_hdr(&xdr, &hdr);
1694         status = encode_putfh(&xdr, args->fh);
1695         if (status)
1696                 goto out;
1697         status = encode_read(&xdr, args);
1698         if (status)
1699                 goto out;
1700
1701         /* set up reply kvec
1702          *    toplevel status + taglen=0 + rescount + OP_PUTFH + status
1703          *       + OP_READ + status + eof + datalen = 9
1704          */
1705         replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS4_dec_read_sz) << 2;
1706         xdr_inline_pages(&req->rq_rcv_buf, replen,
1707                          args->pages, args->pgbase, args->count);
1708 out:
1709         return status;
1710 }
1711
1712 /*
1713  * Encode an SETATTR request
1714  */
1715 static int nfs4_xdr_enc_setattr(struct rpc_rqst *req, uint32_t *p, struct nfs_setattrargs *args)
1716
1717 {
1718         struct xdr_stream xdr;
1719         struct compound_hdr hdr = {
1720                 .nops   = 3,
1721         };
1722         int status;
1723
1724         xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1725         encode_compound_hdr(&xdr, &hdr);
1726         status = encode_putfh(&xdr, args->fh);
1727         if(status)
1728                 goto out;
1729         status = encode_setattr(&xdr, args, args->server);
1730         if(status)
1731                 goto out;
1732         status = encode_getfattr(&xdr, args->bitmask);
1733 out:
1734         return status;
1735 }
1736
1737 /*
1738  * Encode a GETACL request
1739  */
1740 static int
1741 nfs4_xdr_enc_getacl(struct rpc_rqst *req, uint32_t *p,
1742                 struct nfs_getaclargs *args)
1743 {
1744         struct xdr_stream xdr;
1745         struct rpc_auth *auth = req->rq_task->tk_auth;
1746         struct compound_hdr hdr = {
1747                 .nops   = 2,
1748         };
1749         int replen, status;
1750
1751         xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1752         encode_compound_hdr(&xdr, &hdr);
1753         status = encode_putfh(&xdr, args->fh);
1754         if (status)
1755                 goto out;
1756         status = encode_getattr_two(&xdr, FATTR4_WORD0_ACL, 0);
1757         /* set up reply buffer: */
1758         replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS4_dec_getacl_sz) << 2;
1759         xdr_inline_pages(&req->rq_rcv_buf, replen,
1760                 args->acl_pages, args->acl_pgbase, args->acl_len);
1761 out:
1762         return status;
1763 }
1764
1765 /*
1766  * Encode a WRITE request
1767  */
1768 static int nfs4_xdr_enc_write(struct rpc_rqst *req, uint32_t *p, struct nfs_writeargs *args)
1769 {
1770         struct xdr_stream xdr;
1771         struct compound_hdr hdr = {
1772                 .nops = 2,
1773         };
1774         int status;
1775
1776         xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1777         encode_compound_hdr(&xdr, &hdr);
1778         status = encode_putfh(&xdr, args->fh);
1779         if (status)
1780                 goto out;
1781         status = encode_write(&xdr, args);
1782 out:
1783         return status;
1784 }
1785
1786 /*
1787  *  a COMMIT request
1788  */
1789 static int nfs4_xdr_enc_commit(struct rpc_rqst *req, uint32_t *p, struct nfs_writeargs *args)
1790 {
1791         struct xdr_stream xdr;
1792         struct compound_hdr hdr = {
1793                 .nops = 2,
1794         };
1795         int status;
1796
1797         xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1798         encode_compound_hdr(&xdr, &hdr);
1799         status = encode_putfh(&xdr, args->fh);
1800         if (status)
1801                 goto out;
1802         status = encode_commit(&xdr, args);
1803 out:
1804         return status;
1805 }
1806
1807 /*
1808  * FSINFO request
1809  */
1810 static int nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, uint32_t *p, struct nfs4_fsinfo_arg *args)
1811 {
1812         struct xdr_stream xdr;
1813         struct compound_hdr hdr = {
1814                 .nops   = 2,
1815         };
1816         int status;
1817
1818         xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1819         encode_compound_hdr(&xdr, &hdr);
1820         status = encode_putfh(&xdr, args->fh);
1821         if (!status)
1822                 status = encode_fsinfo(&xdr, args->bitmask);
1823         return status;
1824 }
1825
1826 /*
1827  * a PATHCONF request
1828  */
1829 static int nfs4_xdr_enc_pathconf(struct rpc_rqst *req, uint32_t *p, const struct nfs4_pathconf_arg *args)
1830 {
1831         struct xdr_stream xdr;
1832         struct compound_hdr hdr = {
1833                 .nops = 2,
1834         };
1835         int status;
1836
1837         xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1838         encode_compound_hdr(&xdr, &hdr);
1839         status = encode_putfh(&xdr, args->fh);
1840         if (!status)
1841                 status = encode_getattr_one(&xdr,
1842                                 args->bitmask[0] & nfs4_pathconf_bitmap[0]);
1843         return status;
1844 }
1845
1846 /*
1847  * a STATFS request
1848  */
1849 static int nfs4_xdr_enc_statfs(struct rpc_rqst *req, uint32_t *p, const struct nfs4_statfs_arg *args)
1850 {
1851         struct xdr_stream xdr;
1852         struct compound_hdr hdr = {
1853                 .nops = 2,
1854         };
1855         int status;
1856
1857         xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1858         encode_compound_hdr(&xdr, &hdr);
1859         status = encode_putfh(&xdr, args->fh);
1860         if (status == 0)
1861                 status = encode_getattr_two(&xdr,
1862                                 args->bitmask[0] & nfs4_statfs_bitmap[0],
1863                                 args->bitmask[1] & nfs4_statfs_bitmap[1]);
1864         return status;
1865 }
1866
1867 /*
1868  * GETATTR_BITMAP request
1869  */
1870 static int nfs4_xdr_enc_server_caps(struct rpc_rqst *req, uint32_t *p, const struct nfs_fh *fhandle)
1871 {
1872         struct xdr_stream xdr;
1873         struct compound_hdr hdr = {
1874                 .nops = 2,
1875         };
1876         int status;
1877
1878         xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1879         encode_compound_hdr(&xdr, &hdr);
1880         status = encode_putfh(&xdr, fhandle);
1881         if (status == 0)
1882                 status = encode_getattr_one(&xdr, FATTR4_WORD0_SUPPORTED_ATTRS|
1883                                 FATTR4_WORD0_LINK_SUPPORT|
1884                                 FATTR4_WORD0_SYMLINK_SUPPORT|
1885                                 FATTR4_WORD0_ACLSUPPORT);
1886         return status;
1887 }
1888
1889 /*
1890  * a RENEW request
1891  */
1892 static int nfs4_xdr_enc_renew(struct rpc_rqst *req, uint32_t *p, struct nfs4_client *clp)
1893 {
1894         struct xdr_stream xdr;
1895         struct compound_hdr hdr = {
1896                 .nops   = 1,
1897         };
1898
1899         xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1900         encode_compound_hdr(&xdr, &hdr);
1901         return encode_renew(&xdr, clp);
1902 }
1903
1904 /*
1905  * a SETCLIENTID request
1906  */
1907 static int nfs4_xdr_enc_setclientid(struct rpc_rqst *req, uint32_t *p, struct nfs4_setclientid *sc)
1908 {
1909         struct xdr_stream xdr;
1910         struct compound_hdr hdr = {
1911                 .nops   = 1,
1912         };
1913
1914         xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1915         encode_compound_hdr(&xdr, &hdr);
1916         return encode_setclientid(&xdr, sc);
1917 }
1918
1919 /*
1920  * a SETCLIENTID_CONFIRM request
1921  */
1922 static int nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req, uint32_t *p, struct nfs4_client *clp)
1923 {
1924         struct xdr_stream xdr;
1925         struct compound_hdr hdr = {
1926                 .nops   = 3,
1927         };
1928         const u32 lease_bitmap[2] = { FATTR4_WORD0_LEASE_TIME, 0 };
1929         int status;
1930
1931         xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1932         encode_compound_hdr(&xdr, &hdr);
1933         status = encode_setclientid_confirm(&xdr, clp);
1934         if (!status)
1935                 status = encode_putrootfh(&xdr);
1936         if (!status)
1937                 status = encode_fsinfo(&xdr, lease_bitmap);
1938         return status;
1939 }
1940
1941 /*
1942  * DELEGRETURN request
1943  */
1944 static int nfs4_xdr_enc_delegreturn(struct rpc_rqst *req, uint32_t *p, const struct nfs4_delegreturnargs *args)
1945 {
1946         struct xdr_stream xdr;
1947         struct compound_hdr hdr = {
1948                 .nops = 2,
1949         };
1950         int status;
1951
1952         xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1953         encode_compound_hdr(&xdr, &hdr);
1954         if ((status = encode_putfh(&xdr, args->fhandle)) == 0)
1955                 status = encode_delegreturn(&xdr, args->stateid);
1956         return status;
1957 }
1958
1959 /*
1960  * START OF "GENERIC" DECODE ROUTINES.
1961  *   These may look a little ugly since they are imported from a "generic"
1962  * set of XDR encode/decode routines which are intended to be shared by
1963  * all of our NFSv4 implementations (OpenBSD, MacOS X...).
1964  *
1965  * If the pain of reading these is too great, it should be a straightforward
1966  * task to translate them into Linux-specific versions which are more
1967  * consistent with the style used in NFSv2/v3...
1968  */
1969 #define READ32(x)         (x) = ntohl(*p++)
1970 #define READ64(x)         do {                  \
1971         (x) = (u64)ntohl(*p++) << 32;           \
1972         (x) |= ntohl(*p++);                     \
1973 } while (0)
1974 #define READTIME(x)       do {                  \
1975         p++;                                    \
1976         (x.tv_sec) = ntohl(*p++);               \
1977         (x.tv_nsec) = ntohl(*p++);              \
1978 } while (0)
1979 #define COPYMEM(x,nbytes) do {                  \
1980         memcpy((x), p, nbytes);                 \
1981         p += XDR_QUADLEN(nbytes);               \
1982 } while (0)
1983
1984 #define READ_BUF(nbytes)  do { \
1985         p = xdr_inline_decode(xdr, nbytes); \
1986         if (!p) { \
1987                 printk(KERN_WARNING "%s: reply buffer overflowed in line %d.", \
1988                                 __FUNCTION__, __LINE__); \
1989                 return -EIO; \
1990         } \
1991 } while (0)
1992
1993 static int decode_opaque_inline(struct xdr_stream *xdr, uint32_t *len, char **string)
1994 {
1995         uint32_t *p;
1996
1997         READ_BUF(4);
1998         READ32(*len);
1999         READ_BUF(*len);
2000         *string = (char *)p;
2001         return 0;
2002 }
2003
2004 static int decode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr)
2005 {
2006         uint32_t *p;
2007
2008         READ_BUF(8);
2009         READ32(hdr->status);
2010         READ32(hdr->taglen);
2011
2012         READ_BUF(hdr->taglen + 4);
2013         hdr->tag = (char *)p;
2014         p += XDR_QUADLEN(hdr->taglen);
2015         READ32(hdr->nops);
2016         return 0;
2017 }
2018
2019 static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected)
2020 {
2021         uint32_t *p;
2022         uint32_t opnum;
2023         int32_t nfserr;
2024
2025         READ_BUF(8);
2026         READ32(opnum);
2027         if (opnum != expected) {
2028                 printk(KERN_NOTICE
2029                                 "nfs4_decode_op_hdr: Server returned operation"
2030                                 " %d but we issued a request for %d\n",
2031                                 opnum, expected);
2032                 return -EIO;
2033         }
2034         READ32(nfserr);
2035         if (nfserr != NFS_OK)
2036                 return -nfs_stat_to_errno(nfserr);
2037         return 0;
2038 }
2039
2040 /* Dummy routine */
2041 static int decode_ace(struct xdr_stream *xdr, void *ace, struct nfs4_client *clp)
2042 {
2043         uint32_t *p;
2044         uint32_t strlen;
2045         char *str;
2046
2047         READ_BUF(12);
2048         return decode_opaque_inline(xdr, &strlen, &str);
2049 }
2050
2051 static int decode_attr_bitmap(struct xdr_stream *xdr, uint32_t *bitmap)
2052 {
2053         uint32_t bmlen, *p;
2054
2055         READ_BUF(4);
2056         READ32(bmlen);
2057
2058         bitmap[0] = bitmap[1] = 0;
2059         READ_BUF((bmlen << 2));
2060         if (bmlen > 0) {
2061                 READ32(bitmap[0]);
2062                 if (bmlen > 1)
2063                         READ32(bitmap[1]);
2064         }
2065         return 0;
2066 }
2067
2068 static inline int decode_attr_length(struct xdr_stream *xdr, uint32_t *attrlen, uint32_t **savep)
2069 {
2070         uint32_t *p;
2071
2072         READ_BUF(4);
2073         READ32(*attrlen);
2074         *savep = xdr->p;
2075         return 0;
2076 }
2077
2078 static int decode_attr_supported(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *bitmask)
2079 {
2080         if (likely(bitmap[0] & FATTR4_WORD0_SUPPORTED_ATTRS)) {
2081                 decode_attr_bitmap(xdr, bitmask);
2082                 bitmap[0] &= ~FATTR4_WORD0_SUPPORTED_ATTRS;
2083         } else
2084                 bitmask[0] = bitmask[1] = 0;
2085         dprintk("%s: bitmask=0x%x%x\n", __FUNCTION__, bitmask[0], bitmask[1]);
2086         return 0;
2087 }
2088
2089 static int decode_attr_type(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *type)
2090 {
2091         uint32_t *p;
2092
2093         *type = 0;
2094         if (unlikely(bitmap[0] & (FATTR4_WORD0_TYPE - 1U)))
2095                 return -EIO;
2096         if (likely(bitmap[0] & FATTR4_WORD0_TYPE)) {
2097                 READ_BUF(4);
2098                 READ32(*type);
2099                 if (*type < NF4REG || *type > NF4NAMEDATTR) {
2100                         dprintk("%s: bad type %d\n", __FUNCTION__, *type);
2101                         return -EIO;
2102                 }
2103                 bitmap[0] &= ~FATTR4_WORD0_TYPE;
2104         }
2105         dprintk("%s: type=0%o\n", __FUNCTION__, nfs_type2fmt[*type].nfs2type);
2106         return 0;
2107 }
2108
2109 static int decode_attr_change(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *change)
2110 {
2111         uint32_t *p;
2112
2113         *change = 0;
2114         if (unlikely(bitmap[0] & (FATTR4_WORD0_CHANGE - 1U)))
2115                 return -EIO;
2116         if (likely(bitmap[0] & FATTR4_WORD0_CHANGE)) {
2117                 READ_BUF(8);
2118                 READ64(*change);
2119                 bitmap[0] &= ~FATTR4_WORD0_CHANGE;
2120         }
2121         dprintk("%s: change attribute=%Lu\n", __FUNCTION__,
2122                         (unsigned long long)*change);
2123         return 0;
2124 }
2125
2126 static int decode_attr_size(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *size)
2127 {
2128         uint32_t *p;
2129
2130         *size = 0;
2131         if (unlikely(bitmap[0] & (FATTR4_WORD0_SIZE - 1U)))
2132                 return -EIO;
2133         if (likely(bitmap[0] & FATTR4_WORD0_SIZE)) {
2134                 READ_BUF(8);
2135                 READ64(*size);
2136                 bitmap[0] &= ~FATTR4_WORD0_SIZE;
2137         }
2138         dprintk("%s: file size=%Lu\n", __FUNCTION__, (unsigned long long)*size);
2139         return 0;
2140 }
2141
2142 static int decode_attr_link_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2143 {
2144         uint32_t *p;
2145
2146         *res = 0;
2147         if (unlikely(bitmap[0] & (FATTR4_WORD0_LINK_SUPPORT - 1U)))
2148                 return -EIO;
2149         if (likely(bitmap[0] & FATTR4_WORD0_LINK_SUPPORT)) {
2150                 READ_BUF(4);
2151                 READ32(*res);
2152                 bitmap[0] &= ~FATTR4_WORD0_LINK_SUPPORT;
2153         }
2154         dprintk("%s: link support=%s\n", __FUNCTION__, *res == 0 ? "false" : "true");
2155         return 0;
2156 }
2157
2158 static int decode_attr_symlink_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2159 {
2160         uint32_t *p;
2161
2162         *res = 0;
2163         if (unlikely(bitmap[0] & (FATTR4_WORD0_SYMLINK_SUPPORT - 1U)))
2164                 return -EIO;
2165         if (likely(bitmap[0] & FATTR4_WORD0_SYMLINK_SUPPORT)) {
2166                 READ_BUF(4);
2167                 READ32(*res);
2168                 bitmap[0] &= ~FATTR4_WORD0_SYMLINK_SUPPORT;
2169         }
2170         dprintk("%s: symlink support=%s\n", __FUNCTION__, *res == 0 ? "false" : "true");
2171         return 0;
2172 }
2173
2174 static int decode_attr_fsid(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_fsid *fsid)
2175 {
2176         uint32_t *p;
2177
2178         fsid->major = 0;
2179         fsid->minor = 0;
2180         if (unlikely(bitmap[0] & (FATTR4_WORD0_FSID - 1U)))
2181                 return -EIO;
2182         if (likely(bitmap[0] & FATTR4_WORD0_FSID)) {
2183                 READ_BUF(16);
2184                 READ64(fsid->major);
2185                 READ64(fsid->minor);
2186                 bitmap[0] &= ~FATTR4_WORD0_FSID;
2187         }
2188         dprintk("%s: fsid=(0x%Lx/0x%Lx)\n", __FUNCTION__,
2189                         (unsigned long long)fsid->major,
2190                         (unsigned long long)fsid->minor);
2191         return 0;
2192 }
2193
2194 static int decode_attr_lease_time(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2195 {
2196         uint32_t *p;
2197
2198         *res = 60;
2199         if (unlikely(bitmap[0] & (FATTR4_WORD0_LEASE_TIME - 1U)))
2200                 return -EIO;
2201         if (likely(bitmap[0] & FATTR4_WORD0_LEASE_TIME)) {
2202                 READ_BUF(4);
2203                 READ32(*res);
2204                 bitmap[0] &= ~FATTR4_WORD0_LEASE_TIME;
2205         }
2206         dprintk("%s: file size=%u\n", __FUNCTION__, (unsigned int)*res);
2207         return 0;
2208 }
2209
2210 static int decode_attr_aclsupport(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2211 {
2212         uint32_t *p;
2213
2214         *res = ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL;
2215         if (unlikely(bitmap[0] & (FATTR4_WORD0_ACLSUPPORT - 1U)))
2216                 return -EIO;
2217         if (likely(bitmap[0] & FATTR4_WORD0_ACLSUPPORT)) {
2218                 READ_BUF(4);
2219                 READ32(*res);
2220                 bitmap[0] &= ~FATTR4_WORD0_ACLSUPPORT;
2221         }
2222         dprintk("%s: ACLs supported=%u\n", __FUNCTION__, (unsigned int)*res);
2223         return 0;
2224 }
2225
2226 static int decode_attr_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
2227 {
2228         uint32_t *p;
2229
2230         *fileid = 0;
2231         if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEID - 1U)))
2232                 return -EIO;
2233         if (likely(bitmap[0] & FATTR4_WORD0_FILEID)) {
2234                 READ_BUF(8);
2235                 READ64(*fileid);
2236                 bitmap[0] &= ~FATTR4_WORD0_FILEID;
2237         }
2238         dprintk("%s: fileid=%Lu\n", __FUNCTION__, (unsigned long long)*fileid);
2239         return 0;
2240 }
2241
2242 static int decode_attr_files_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2243 {
2244         uint32_t *p;
2245         int status = 0;
2246
2247         *res = 0;
2248         if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_AVAIL - 1U)))
2249                 return -EIO;
2250         if (likely(bitmap[0] & FATTR4_WORD0_FILES_AVAIL)) {
2251                 READ_BUF(8);
2252                 READ64(*res);
2253                 bitmap[0] &= ~FATTR4_WORD0_FILES_AVAIL;
2254         }
2255         dprintk("%s: files avail=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2256         return status;
2257 }
2258
2259 static int decode_attr_files_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2260 {
2261         uint32_t *p;
2262         int status = 0;
2263
2264         *res = 0;
2265         if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_FREE - 1U)))
2266                 return -EIO;
2267         if (likely(bitmap[0] & FATTR4_WORD0_FILES_FREE)) {
2268                 READ_BUF(8);
2269                 READ64(*res);
2270                 bitmap[0] &= ~FATTR4_WORD0_FILES_FREE;
2271         }
2272         dprintk("%s: files free=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2273         return status;
2274 }
2275
2276 static int decode_attr_files_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2277 {
2278         uint32_t *p;
2279         int status = 0;
2280
2281         *res = 0;
2282         if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_TOTAL - 1U)))
2283                 return -EIO;
2284         if (likely(bitmap[0] & FATTR4_WORD0_FILES_TOTAL)) {
2285                 READ_BUF(8);
2286                 READ64(*res);
2287                 bitmap[0] &= ~FATTR4_WORD0_FILES_TOTAL;
2288         }
2289         dprintk("%s: files total=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2290         return status;
2291 }
2292
2293 static int decode_attr_maxfilesize(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2294 {
2295         uint32_t *p;
2296         int status = 0;
2297
2298         *res = 0;
2299         if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXFILESIZE - 1U)))
2300                 return -EIO;
2301         if (likely(bitmap[0] & FATTR4_WORD0_MAXFILESIZE)) {
2302                 READ_BUF(8);
2303                 READ64(*res);
2304                 bitmap[0] &= ~FATTR4_WORD0_MAXFILESIZE;
2305         }
2306         dprintk("%s: maxfilesize=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2307         return status;
2308 }
2309
2310 static int decode_attr_maxlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxlink)
2311 {
2312         uint32_t *p;
2313         int status = 0;
2314
2315         *maxlink = 1;
2316         if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXLINK - 1U)))
2317                 return -EIO;
2318         if (likely(bitmap[0] & FATTR4_WORD0_MAXLINK)) {
2319                 READ_BUF(4);
2320                 READ32(*maxlink);
2321                 bitmap[0] &= ~FATTR4_WORD0_MAXLINK;
2322         }
2323         dprintk("%s: maxlink=%u\n", __FUNCTION__, *maxlink);
2324         return status;
2325 }
2326
2327 static int decode_attr_maxname(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxname)
2328 {
2329         uint32_t *p;
2330         int status = 0;
2331
2332         *maxname = 1024;
2333         if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXNAME - 1U)))
2334                 return -EIO;
2335         if (likely(bitmap[0] & FATTR4_WORD0_MAXNAME)) {
2336                 READ_BUF(4);
2337                 READ32(*maxname);
2338                 bitmap[0] &= ~FATTR4_WORD0_MAXNAME;
2339         }
2340         dprintk("%s: maxname=%u\n", __FUNCTION__, *maxname);
2341         return status;
2342 }
2343
2344 static int decode_attr_maxread(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2345 {
2346         uint32_t *p;
2347         int status = 0;
2348
2349         *res = 1024;
2350         if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXREAD - 1U)))
2351                 return -EIO;
2352         if (likely(bitmap[0] & FATTR4_WORD0_MAXREAD)) {
2353                 uint64_t maxread;
2354                 READ_BUF(8);
2355                 READ64(maxread);
2356                 if (maxread > 0x7FFFFFFF)
2357                         maxread = 0x7FFFFFFF;
2358                 *res = (uint32_t)maxread;
2359                 bitmap[0] &= ~FATTR4_WORD0_MAXREAD;
2360         }
2361         dprintk("%s: maxread=%lu\n", __FUNCTION__, (unsigned long)*res);
2362         return status;
2363 }
2364
2365 static int decode_attr_maxwrite(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2366 {
2367         uint32_t *p;
2368         int status = 0;
2369
2370         *res = 1024;
2371         if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXWRITE - 1U)))
2372                 return -EIO;
2373         if (likely(bitmap[0] & FATTR4_WORD0_MAXWRITE)) {
2374                 uint64_t maxwrite;
2375                 READ_BUF(8);
2376                 READ64(maxwrite);
2377                 if (maxwrite > 0x7FFFFFFF)
2378                         maxwrite = 0x7FFFFFFF;
2379                 *res = (uint32_t)maxwrite;
2380                 bitmap[0] &= ~FATTR4_WORD0_MAXWRITE;
2381         }
2382         dprintk("%s: maxwrite=%lu\n", __FUNCTION__, (unsigned long)*res);
2383         return status;
2384 }
2385
2386 static int decode_attr_mode(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *mode)
2387 {
2388         uint32_t *p;
2389
2390         *mode = 0;
2391         if (unlikely(bitmap[1] & (FATTR4_WORD1_MODE - 1U)))
2392                 return -EIO;
2393         if (likely(bitmap[1] & FATTR4_WORD1_MODE)) {
2394                 READ_BUF(4);
2395                 READ32(*mode);
2396                 *mode &= ~S_IFMT;
2397                 bitmap[1] &= ~FATTR4_WORD1_MODE;
2398         }
2399         dprintk("%s: file mode=0%o\n", __FUNCTION__, (unsigned int)*mode);
2400         return 0;
2401 }
2402
2403 static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *nlink)
2404 {
2405         uint32_t *p;
2406
2407         *nlink = 1;
2408         if (unlikely(bitmap[1] & (FATTR4_WORD1_NUMLINKS - 1U)))
2409                 return -EIO;
2410         if (likely(bitmap[1] & FATTR4_WORD1_NUMLINKS)) {
2411                 READ_BUF(4);
2412                 READ32(*nlink);
2413                 bitmap[1] &= ~FATTR4_WORD1_NUMLINKS;
2414         }
2415         dprintk("%s: nlink=%u\n", __FUNCTION__, (unsigned int)*nlink);
2416         return 0;
2417 }
2418
2419 static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_client *clp, int32_t *uid)
2420 {
2421         uint32_t len, *p;
2422
2423         *uid = -2;
2424         if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER - 1U)))
2425                 return -EIO;
2426         if (likely(bitmap[1] & FATTR4_WORD1_OWNER)) {
2427                 READ_BUF(4);
2428                 READ32(len);
2429                 READ_BUF(len);
2430                 if (len < XDR_MAX_NETOBJ) {
2431                         if (nfs_map_name_to_uid(clp, (char *)p, len, uid) != 0)
2432                                 dprintk("%s: nfs_map_name_to_uid failed!\n",
2433                                                 __FUNCTION__);
2434                 } else
2435                         printk(KERN_WARNING "%s: name too long (%u)!\n",
2436                                         __FUNCTION__, len);
2437                 bitmap[1] &= ~FATTR4_WORD1_OWNER;
2438         }
2439         dprintk("%s: uid=%d\n", __FUNCTION__, (int)*uid);
2440         return 0;
2441 }
2442
2443 static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_client *clp, int32_t *gid)
2444 {
2445         uint32_t len, *p;
2446
2447         *gid = -2;
2448         if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER_GROUP - 1U)))
2449                 return -EIO;
2450         if (likely(bitmap[1] & FATTR4_WORD1_OWNER_GROUP)) {
2451                 READ_BUF(4);
2452                 READ32(len);
2453                 READ_BUF(len);
2454                 if (len < XDR_MAX_NETOBJ) {
2455                         if (nfs_map_group_to_gid(clp, (char *)p, len, gid) != 0)
2456                                 dprintk("%s: nfs_map_group_to_gid failed!\n",
2457                                                 __FUNCTION__);
2458                 } else
2459                         printk(KERN_WARNING "%s: name too long (%u)!\n",
2460                                         __FUNCTION__, len);
2461                 bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP;
2462         }
2463         dprintk("%s: gid=%d\n", __FUNCTION__, (int)*gid);
2464         return 0;
2465 }
2466
2467 static int decode_attr_rdev(struct xdr_stream *xdr, uint32_t *bitmap, dev_t *rdev)
2468 {
2469         uint32_t major = 0, minor = 0, *p;
2470
2471         *rdev = MKDEV(0,0);
2472         if (unlikely(bitmap[1] & (FATTR4_WORD1_RAWDEV - 1U)))
2473                 return -EIO;
2474         if (likely(bitmap[1] & FATTR4_WORD1_RAWDEV)) {
2475                 dev_t tmp;
2476
2477                 READ_BUF(8);
2478                 READ32(major);
2479                 READ32(minor);
2480                 tmp = MKDEV(major, minor);
2481                 if (MAJOR(tmp) == major && MINOR(tmp) == minor)
2482                         *rdev = tmp;
2483                 bitmap[1] &= ~ FATTR4_WORD1_RAWDEV;
2484         }
2485         dprintk("%s: rdev=(0x%x:0x%x)\n", __FUNCTION__, major, minor);
2486         return 0;
2487 }
2488
2489 static int decode_attr_space_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2490 {
2491         uint32_t *p;
2492         int status = 0;
2493
2494         *res = 0;
2495         if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_AVAIL - 1U)))
2496                 return -EIO;
2497         if (likely(bitmap[1] & FATTR4_WORD1_SPACE_AVAIL)) {
2498                 READ_BUF(8);
2499                 READ64(*res);
2500                 bitmap[1] &= ~FATTR4_WORD1_SPACE_AVAIL;
2501         }
2502         dprintk("%s: space avail=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2503         return status;
2504 }
2505
2506 static int decode_attr_space_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2507 {
2508         uint32_t *p;
2509         int status = 0;
2510
2511         *res = 0;
2512         if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_FREE - 1U)))
2513                 return -EIO;
2514         if (likely(bitmap[1] & FATTR4_WORD1_SPACE_FREE)) {
2515                 READ_BUF(8);
2516                 READ64(*res);
2517                 bitmap[1] &= ~FATTR4_WORD1_SPACE_FREE;
2518         }
2519         dprintk("%s: space free=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2520         return status;
2521 }
2522
2523 static int decode_attr_space_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2524 {
2525         uint32_t *p;
2526         int status = 0;
2527
2528         *res = 0;
2529         if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_TOTAL - 1U)))
2530                 return -EIO;
2531         if (likely(bitmap[1] & FATTR4_WORD1_SPACE_TOTAL)) {
2532                 READ_BUF(8);
2533                 READ64(*res);
2534                 bitmap[1] &= ~FATTR4_WORD1_SPACE_TOTAL;
2535         }
2536         dprintk("%s: space total=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2537         return status;
2538 }
2539
2540 static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *used)
2541 {
2542         uint32_t *p;
2543
2544         *used = 0;
2545         if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_USED - 1U)))
2546                 return -EIO;
2547         if (likely(bitmap[1] & FATTR4_WORD1_SPACE_USED)) {
2548                 READ_BUF(8);
2549                 READ64(*used);
2550                 bitmap[1] &= ~FATTR4_WORD1_SPACE_USED;
2551         }
2552         dprintk("%s: space used=%Lu\n", __FUNCTION__,
2553                         (unsigned long long)*used);
2554         return 0;
2555 }
2556
2557 static int decode_attr_time(struct xdr_stream *xdr, struct timespec *time)
2558 {
2559         uint32_t *p;
2560         uint64_t sec;
2561         uint32_t nsec;
2562
2563         READ_BUF(12);
2564         READ64(sec);
2565         READ32(nsec);
2566         time->tv_sec = (time_t)sec;
2567         time->tv_nsec = (long)nsec;
2568         return 0;
2569 }
2570
2571 static int decode_attr_time_access(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
2572 {
2573         int status = 0;
2574
2575         time->tv_sec = 0;
2576         time->tv_nsec = 0;
2577         if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_ACCESS - 1U)))
2578                 return -EIO;
2579         if (likely(bitmap[1] & FATTR4_WORD1_TIME_ACCESS)) {
2580                 status = decode_attr_time(xdr, time);
2581                 bitmap[1] &= ~FATTR4_WORD1_TIME_ACCESS;
2582         }
2583         dprintk("%s: atime=%ld\n", __FUNCTION__, (long)time->tv_sec);
2584         return status;
2585 }
2586
2587 static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
2588 {
2589         int status = 0;
2590
2591         time->tv_sec = 0;
2592         time->tv_nsec = 0;
2593         if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_METADATA - 1U)))
2594                 return -EIO;
2595         if (likely(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) {
2596                 status = decode_attr_time(xdr, time);
2597                 bitmap[1] &= ~FATTR4_WORD1_TIME_METADATA;
2598         }
2599         dprintk("%s: ctime=%ld\n", __FUNCTION__, (long)time->tv_sec);
2600         return status;
2601 }
2602
2603 static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
2604 {
2605         int status = 0;
2606
2607         time->tv_sec = 0;
2608         time->tv_nsec = 0;
2609         if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_MODIFY - 1U)))
2610                 return -EIO;
2611         if (likely(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) {
2612                 status = decode_attr_time(xdr, time);
2613                 bitmap[1] &= ~FATTR4_WORD1_TIME_MODIFY;
2614         }
2615         dprintk("%s: mtime=%ld\n", __FUNCTION__, (long)time->tv_sec);
2616         return status;
2617 }
2618
2619 static int verify_attr_len(struct xdr_stream *xdr, uint32_t *savep, uint32_t attrlen)
2620 {
2621         unsigned int attrwords = XDR_QUADLEN(attrlen);
2622         unsigned int nwords = xdr->p - savep;
2623
2624         if (unlikely(attrwords != nwords)) {
2625                 printk(KERN_WARNING "%s: server returned incorrect attribute length: %u %c %u\n",
2626                                 __FUNCTION__,
2627                                 attrwords << 2,
2628                                 (attrwords < nwords) ? '<' : '>',
2629                                 nwords << 2);
2630                 return -EIO;
2631         }
2632         return 0;
2633 }
2634
2635 static int decode_change_info(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
2636 {
2637         uint32_t *p;
2638
2639         READ_BUF(20);
2640         READ32(cinfo->atomic);
2641         READ64(cinfo->before);
2642         READ64(cinfo->after);
2643         return 0;
2644 }
2645
2646 static int decode_access(struct xdr_stream *xdr, struct nfs4_accessres *access)
2647 {
2648         uint32_t *p;
2649         uint32_t supp, acc;
2650         int status;
2651
2652         status = decode_op_hdr(xdr, OP_ACCESS);
2653         if (status)
2654                 return status;
2655         READ_BUF(8);
2656         READ32(supp);
2657         READ32(acc);
2658         access->supported = supp;
2659         access->access = acc;
2660         return 0;
2661 }
2662
2663 static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res)
2664 {
2665         uint32_t *p;
2666         int status;
2667
2668         status = decode_op_hdr(xdr, OP_CLOSE);
2669         if (status)
2670                 return status;
2671         READ_BUF(sizeof(res->stateid.data));
2672         COPYMEM(res->stateid.data, sizeof(res->stateid.data));
2673         return 0;
2674 }
2675
2676 static int decode_commit(struct xdr_stream *xdr, struct nfs_writeres *res)
2677 {
2678         uint32_t *p;
2679         int status;
2680
2681         status = decode_op_hdr(xdr, OP_COMMIT);
2682         if (status)
2683                 return status;
2684         READ_BUF(8);
2685         COPYMEM(res->verf->verifier, 8);
2686         return 0;
2687 }
2688
2689 static int decode_create(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
2690 {
2691         uint32_t *p;
2692         uint32_t bmlen;
2693         int status;
2694
2695         status = decode_op_hdr(xdr, OP_CREATE);
2696         if (status)
2697                 return status;
2698         if ((status = decode_change_info(xdr, cinfo)))
2699                 return status;
2700         READ_BUF(4);
2701         READ32(bmlen);
2702         READ_BUF(bmlen << 2);
2703         return 0;
2704 }
2705
2706 static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_res *res)
2707 {
2708         uint32_t *savep;
2709         uint32_t attrlen,
2710                  bitmap[2] = {0};
2711         int status;
2712
2713         if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
2714                 goto xdr_error;
2715         if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
2716                 goto xdr_error;
2717         if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
2718                 goto xdr_error;
2719         if ((status = decode_attr_supported(xdr, bitmap, res->attr_bitmask)) != 0)
2720                 goto xdr_error;
2721         if ((status = decode_attr_link_support(xdr, bitmap, &res->has_links)) != 0)
2722                 goto xdr_error;
2723         if ((status = decode_attr_symlink_support(xdr, bitmap, &res->has_symlinks)) != 0)
2724                 goto xdr_error;
2725         if ((status = decode_attr_aclsupport(xdr, bitmap, &res->acl_bitmask)) != 0)
2726                 goto xdr_error;
2727         status = verify_attr_len(xdr, savep, attrlen);
2728 xdr_error:
2729         if (status != 0)
2730                 printk(KERN_NOTICE "%s: xdr error %d!\n", __FUNCTION__, -status);
2731         return status;
2732 }
2733
2734 static int decode_statfs(struct xdr_stream *xdr, struct nfs_fsstat *fsstat)
2735 {
2736         uint32_t *savep;
2737         uint32_t attrlen,
2738                  bitmap[2] = {0};
2739         int status;
2740
2741         if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
2742                 goto xdr_error;
2743         if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
2744                 goto xdr_error;
2745         if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
2746                 goto xdr_error;
2747
2748         if ((status = decode_attr_files_avail(xdr, bitmap, &fsstat->afiles)) != 0)
2749                 goto xdr_error;
2750         if ((status = decode_attr_files_free(xdr, bitmap, &fsstat->ffiles)) != 0)
2751                 goto xdr_error;
2752         if ((status = decode_attr_files_total(xdr, bitmap, &fsstat->tfiles)) != 0)
2753                 goto xdr_error;
2754         if ((status = decode_attr_space_avail(xdr, bitmap, &fsstat->abytes)) != 0)
2755                 goto xdr_error;
2756         if ((status = decode_attr_space_free(xdr, bitmap, &fsstat->fbytes)) != 0)
2757                 goto xdr_error;
2758         if ((status = decode_attr_space_total(xdr, bitmap, &fsstat->tbytes)) != 0)
2759                 goto xdr_error;
2760
2761         status = verify_attr_len(xdr, savep, attrlen);
2762 xdr_error:
2763         if (status != 0)
2764                 printk(KERN_NOTICE "%s: xdr error %d!\n", __FUNCTION__, -status);
2765         return status;
2766 }
2767
2768 static int decode_pathconf(struct xdr_stream *xdr, struct nfs_pathconf *pathconf)
2769 {
2770         uint32_t *savep;
2771         uint32_t attrlen,
2772                  bitmap[2] = {0};
2773         int status;
2774
2775         if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
2776                 goto xdr_error;
2777         if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
2778                 goto xdr_error;
2779         if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
2780                 goto xdr_error;
2781
2782         if ((status = decode_attr_maxlink(xdr, bitmap, &pathconf->max_link)) != 0)
2783                 goto xdr_error;
2784         if ((status = decode_attr_maxname(xdr, bitmap, &pathconf->max_namelen)) != 0)
2785                 goto xdr_error;
2786
2787         status = verify_attr_len(xdr, savep, attrlen);
2788 xdr_error:
2789         if (status != 0)
2790                 printk(KERN_NOTICE "%s: xdr error %d!\n", __FUNCTION__, -status);
2791         return status;
2792 }
2793
2794 static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr, const struct nfs_server *server)
2795 {
2796         uint32_t *savep;
2797         uint32_t attrlen,
2798                  bitmap[2] = {0},
2799                  type;
2800         int status, fmode = 0;
2801
2802         if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
2803                 goto xdr_error;
2804         if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
2805                 goto xdr_error;
2806
2807         fattr->bitmap[0] = bitmap[0];
2808         fattr->bitmap[1] = bitmap[1];
2809
2810         if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
2811                 goto xdr_error;
2812
2813
2814         if ((status = decode_attr_type(xdr, bitmap, &type)) != 0)
2815                 goto xdr_error;
2816         fattr->type = nfs_type2fmt[type].nfs2type;
2817         fmode = nfs_type2fmt[type].mode;
2818
2819         if ((status = decode_attr_change(xdr, bitmap, &fattr->change_attr)) != 0)
2820                 goto xdr_error;
2821         if ((status = decode_attr_size(xdr, bitmap, &fattr->size)) != 0)
2822                 goto xdr_error;
2823         if ((status = decode_attr_fsid(xdr, bitmap, &fattr->fsid_u.nfs4)) != 0)
2824                 goto xdr_error;
2825         if ((status = decode_attr_fileid(xdr, bitmap, &fattr->fileid)) != 0)
2826                 goto xdr_error;
2827         if ((status = decode_attr_mode(xdr, bitmap, &fattr->mode)) != 0)
2828                 goto xdr_error;
2829         fattr->mode |= fmode;
2830         if ((status = decode_attr_nlink(xdr, bitmap, &fattr->nlink)) != 0)
2831                 goto xdr_error;
2832         if ((status = decode_attr_owner(xdr, bitmap, server->nfs4_state, &fattr->uid)) != 0)
2833                 goto xdr_error;
2834         if ((status = decode_attr_group(xdr, bitmap, server->nfs4_state, &fattr->gid)) != 0)
2835                 goto xdr_error;
2836         if ((status = decode_attr_rdev(xdr, bitmap, &fattr->rdev)) != 0)
2837                 goto xdr_error;
2838         if ((status = decode_attr_space_used(xdr, bitmap, &fattr->du.nfs3.used)) != 0)
2839                 goto xdr_error;
2840         if ((status = decode_attr_time_access(xdr, bitmap, &fattr->atime)) != 0)
2841                 goto xdr_error;
2842         if ((status = decode_attr_time_metadata(xdr, bitmap, &fattr->ctime)) != 0)
2843                 goto xdr_error;
2844         if ((status = decode_attr_time_modify(xdr, bitmap, &fattr->mtime)) != 0)
2845                 goto xdr_error;
2846         if ((status = verify_attr_len(xdr, savep, attrlen)) == 0)
2847                 fattr->valid = NFS_ATTR_FATTR | NFS_ATTR_FATTR_V3 | NFS_ATTR_FATTR_V4;
2848 xdr_error:
2849         if (status != 0)
2850                 printk(KERN_NOTICE "%s: xdr error %d!\n", __FUNCTION__, -status);
2851         return status;
2852 }
2853
2854
2855 static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo)
2856 {
2857         uint32_t *savep;
2858         uint32_t attrlen, bitmap[2];
2859         int status;
2860
2861         if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
2862                 goto xdr_error;
2863         if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
2864                 goto xdr_error;
2865         if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
2866                 goto xdr_error;
2867
2868         fsinfo->rtmult = fsinfo->wtmult = 512;  /* ??? */
2869
2870         if ((status = decode_attr_lease_time(xdr, bitmap, &fsinfo->lease_time)) != 0)
2871                 goto xdr_error;
2872         if ((status = decode_attr_maxfilesize(xdr, bitmap, &fsinfo->maxfilesize)) != 0)
2873                 goto xdr_error;
2874         if ((status = decode_attr_maxread(xdr, bitmap, &fsinfo->rtmax)) != 0)
2875                 goto xdr_error;
2876         fsinfo->rtpref = fsinfo->dtpref = fsinfo->rtmax;
2877         if ((status = decode_attr_maxwrite(xdr, bitmap, &fsinfo->wtmax)) != 0)
2878                 goto xdr_error;
2879         fsinfo->wtpref = fsinfo->wtmax;
2880
2881         status = verify_attr_len(xdr, savep, attrlen);
2882 xdr_error:
2883         if (status != 0)
2884                 printk(KERN_NOTICE "%s: xdr error %d!\n", __FUNCTION__, -status);
2885         return status;
2886 }
2887
2888 static int decode_getfh(struct xdr_stream *xdr, struct nfs_fh *fh)
2889 {
2890         uint32_t *p;
2891         uint32_t len;
2892         int status;
2893
2894         status = decode_op_hdr(xdr, OP_GETFH);
2895         if (status)
2896                 return status;
2897         /* Zero handle first to allow comparisons */
2898         memset(fh, 0, sizeof(*fh));
2899
2900         READ_BUF(4);
2901         READ32(len);
2902         if (len > NFS4_FHSIZE)
2903                 return -EIO;
2904         fh->size = len;
2905         READ_BUF(len);
2906         COPYMEM(fh->data, len);
2907         return 0;
2908 }
2909
2910 static int decode_link(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
2911 {
2912         int status;
2913
2914         status = decode_op_hdr(xdr, OP_LINK);
2915         if (status)
2916                 return status;
2917         return decode_change_info(xdr, cinfo);
2918 }
2919
2920 /*
2921  * We create the owner, so we know a proper owner.id length is 4.
2922  */
2923 static int decode_lock_denied (struct xdr_stream *xdr, struct nfs_lock_denied *denied)
2924 {
2925         uint32_t *p;
2926         uint32_t namelen;
2927
2928         READ_BUF(32);
2929         READ64(denied->offset);
2930         READ64(denied->length);
2931         READ32(denied->type);
2932         READ64(denied->owner.clientid);
2933         READ32(namelen);
2934         READ_BUF(namelen);
2935         if (namelen == 4)
2936                 READ32(denied->owner.id);
2937         return -NFS4ERR_DENIED;
2938 }
2939
2940 static int decode_lock(struct xdr_stream *xdr, struct nfs_lockres *res)
2941 {
2942         uint32_t *p;
2943         int status;
2944
2945         status = decode_op_hdr(xdr, OP_LOCK);
2946         if (status == 0) {
2947                 READ_BUF(sizeof(res->u.stateid.data));
2948                 COPYMEM(res->u.stateid.data, sizeof(res->u.stateid.data));
2949         } else if (status == -NFS4ERR_DENIED)
2950                 return decode_lock_denied(xdr, &res->u.denied);
2951         return status;
2952 }
2953
2954 static int decode_lockt(struct xdr_stream *xdr, struct nfs_lockres *res)
2955 {
2956         int status;
2957         status = decode_op_hdr(xdr, OP_LOCKT);
2958         if (status == -NFS4ERR_DENIED)
2959                 return decode_lock_denied(xdr, &res->u.denied);
2960         return status;
2961 }
2962
2963 static int decode_locku(struct xdr_stream *xdr, struct nfs_lockres *res)
2964 {
2965         uint32_t *p;
2966         int status;
2967
2968         status = decode_op_hdr(xdr, OP_LOCKU);
2969         if (status == 0) {
2970                 READ_BUF(sizeof(res->u.stateid.data));
2971                 COPYMEM(res->u.stateid.data, sizeof(res->u.stateid.data));
2972         }
2973         return status;
2974 }
2975
2976 static int decode_lookup(struct xdr_stream *xdr)
2977 {
2978         return decode_op_hdr(xdr, OP_LOOKUP);
2979 }
2980
2981 /* This is too sick! */
2982 static int decode_space_limit(struct xdr_stream *xdr, u64 *maxsize)
2983 {
2984         uint32_t *p;
2985         uint32_t limit_type, nblocks, blocksize;
2986
2987         READ_BUF(12);
2988         READ32(limit_type);
2989         switch (limit_type) {
2990                 case 1:
2991                         READ64(*maxsize);
2992                         break;
2993                 case 2:
2994                         READ32(nblocks);
2995                         READ32(blocksize);
2996                         *maxsize = (uint64_t)nblocks * (uint64_t)blocksize;
2997         }
2998         return 0;
2999 }
3000
3001 static int decode_delegation(struct xdr_stream *xdr, struct nfs_openres *res)
3002 {
3003         uint32_t *p;
3004         uint32_t delegation_type;
3005
3006         READ_BUF(4);
3007         READ32(delegation_type);
3008         if (delegation_type == NFS4_OPEN_DELEGATE_NONE) {
3009                 res->delegation_type = 0;
3010                 return 0;
3011         }
3012         READ_BUF(20);
3013         COPYMEM(res->delegation.data, sizeof(res->delegation.data));
3014         READ32(res->do_recall);
3015         switch (delegation_type) {
3016                 case NFS4_OPEN_DELEGATE_READ:
3017                         res->delegation_type = FMODE_READ;
3018                         break;
3019                 case NFS4_OPEN_DELEGATE_WRITE:
3020                         res->delegation_type = FMODE_WRITE|FMODE_READ;
3021                         if (decode_space_limit(xdr, &res->maxsize) < 0)
3022                                 return -EIO;
3023         }
3024         return decode_ace(xdr, NULL, res->server->nfs4_state);
3025 }
3026
3027 static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res)
3028 {
3029         uint32_t *p;
3030         uint32_t bmlen;
3031         int status;
3032
3033         status = decode_op_hdr(xdr, OP_OPEN);
3034         if (status)
3035                 return status;
3036         READ_BUF(sizeof(res->stateid.data));
3037         COPYMEM(res->stateid.data, sizeof(res->stateid.data));
3038
3039         decode_change_info(xdr, &res->cinfo);
3040
3041         READ_BUF(8);
3042         READ32(res->rflags);
3043         READ32(bmlen);
3044         if (bmlen > 10)
3045                 goto xdr_error;
3046
3047         READ_BUF(bmlen << 2);
3048         p += bmlen;
3049         return decode_delegation(xdr, res);
3050 xdr_error:
3051         printk(KERN_NOTICE "%s: xdr error!\n", __FUNCTION__);
3052         return -EIO;
3053 }
3054
3055 static int decode_open_confirm(struct xdr_stream *xdr, struct nfs_open_confirmres *res)
3056 {
3057         uint32_t *p;
3058         int status;
3059
3060         status = decode_op_hdr(xdr, OP_OPEN_CONFIRM);
3061         if (status)
3062                 return status;
3063         READ_BUF(sizeof(res->stateid.data));
3064         COPYMEM(res->stateid.data, sizeof(res->stateid.data));
3065         return 0;
3066 }
3067
3068 static int decode_open_downgrade(struct xdr_stream *xdr, struct nfs_closeres *res)
3069 {
3070         uint32_t *p;
3071         int status;
3072
3073         status = decode_op_hdr(xdr, OP_OPEN_DOWNGRADE);
3074         if (status)
3075                 return status;
3076         READ_BUF(sizeof(res->stateid.data));
3077         COPYMEM(res->stateid.data, sizeof(res->stateid.data));
3078         return 0;
3079 }
3080
3081 static int decode_putfh(struct xdr_stream *xdr)
3082 {
3083         return decode_op_hdr(xdr, OP_PUTFH);
3084 }
3085
3086 static int decode_putrootfh(struct xdr_stream *xdr)
3087 {
3088         return decode_op_hdr(xdr, OP_PUTROOTFH);
3089 }
3090
3091 static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs_readres *res)
3092 {
3093         struct kvec *iov = req->rq_rcv_buf.head;
3094         uint32_t *p;
3095         uint32_t count, eof, recvd, hdrlen;
3096         int status;
3097
3098         status = decode_op_hdr(xdr, OP_READ);
3099         if (status)
3100                 return status;
3101         READ_BUF(8);
3102         READ32(eof);
3103         READ32(count);
3104         hdrlen = (u8 *) p - (u8 *) iov->iov_base;
3105         recvd = req->rq_rcv_buf.len - hdrlen;
3106         if (count > recvd) {
3107                 printk(KERN_WARNING "NFS: server cheating in read reply: "
3108                                 "count %u > recvd %u\n", count, recvd);
3109                 count = recvd;
3110                 eof = 0;
3111         }
3112         xdr_read_pages(xdr, count);
3113         res->eof = eof;
3114         res->count = count;
3115         return 0;
3116 }
3117
3118 static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs4_readdir_res *readdir)
3119 {
3120         struct xdr_buf  *rcvbuf = &req->rq_rcv_buf;
3121         struct page     *page = *rcvbuf->pages;
3122         struct kvec     *iov = rcvbuf->head;
3123         unsigned int    nr, pglen = rcvbuf->page_len;
3124         uint32_t        *end, *entry, *p, *kaddr;
3125         uint32_t        len, attrlen;
3126         int             hdrlen, recvd, status;
3127
3128         status = decode_op_hdr(xdr, OP_READDIR);
3129         if (status)
3130                 return status;
3131         READ_BUF(8);
3132         COPYMEM(readdir->verifier.data, 8);
3133         dprintk("%s: verifier = 0x%x%x\n",
3134                         __FUNCTION__,
3135                         ((u32 *)readdir->verifier.data)[0],
3136                         ((u32 *)readdir->verifier.data)[1]);
3137
3138
3139         hdrlen = (char *) p - (char *) iov->iov_base;
3140         recvd = rcvbuf->len - hdrlen;
3141         if (pglen > recvd)
3142                 pglen = recvd;
3143         xdr_read_pages(xdr, pglen);
3144
3145         BUG_ON(pglen + readdir->pgbase > PAGE_CACHE_SIZE);
3146         kaddr = p = (uint32_t *) kmap_atomic(page, KM_USER0);
3147         end = (uint32_t *) ((char *)p + pglen + readdir->pgbase);
3148         entry = p;
3149         for (nr = 0; *p++; nr++) {
3150                 if (p + 3 > end)
3151                         goto short_pkt;
3152                 dprintk("cookie = %Lu, ", *((unsigned long long *)p));
3153                 p += 2;                 /* cookie */
3154                 len = ntohl(*p++);      /* filename length */
3155                 if (len > NFS4_MAXNAMLEN) {
3156                         printk(KERN_WARNING "NFS: giant filename in readdir (len 0x%x)\n", len);
3157                         goto err_unmap;
3158                 }
3159                 dprintk("filename = %*s\n", len, (char *)p);
3160                 p += XDR_QUADLEN(len);
3161                 if (p + 1 > end)
3162                         goto short_pkt;
3163                 len = ntohl(*p++);      /* bitmap length */
3164                 p += len;
3165                 if (p + 1 > end)
3166                         goto short_pkt;
3167                 attrlen = XDR_QUADLEN(ntohl(*p++));
3168                 p += attrlen;           /* attributes */
3169                 if (p + 2 > end)
3170                         goto short_pkt;
3171                 entry = p;
3172         }
3173         if (!nr && (entry[0] != 0 || entry[1] == 0))
3174                 goto short_pkt;
3175 out:
3176         kunmap_atomic(kaddr, KM_USER0);
3177         return 0;
3178 short_pkt:
3179         dprintk("%s: short packet at entry %d\n", __FUNCTION__, nr);
3180         entry[0] = entry[1] = 0;
3181         /* truncate listing ? */
3182         if (!nr) {
3183                 printk(KERN_NOTICE "NFS: readdir reply truncated!\n");
3184                 entry[1] = 1;
3185         }
3186         goto out;
3187 err_unmap:
3188         kunmap_atomic(kaddr, KM_USER0);
3189         return -errno_NFSERR_IO;
3190 }
3191
3192 static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req)
3193 {
3194         struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
3195         struct kvec *iov = rcvbuf->head;
3196         int hdrlen, len, recvd;
3197         uint32_t *p;
3198         char *kaddr;
3199         int status;
3200
3201         status = decode_op_hdr(xdr, OP_READLINK);
3202         if (status)
3203                 return status;
3204
3205         /* Convert length of symlink */
3206         READ_BUF(4);
3207         READ32(len);
3208         if (len >= rcvbuf->page_len || len <= 0) {
3209                 dprintk(KERN_WARNING "nfs: server returned giant symlink!\n");
3210                 return -ENAMETOOLONG;
3211         }
3212         hdrlen = (char *) xdr->p - (char *) iov->iov_base;
3213         recvd = req->rq_rcv_buf.len - hdrlen;
3214         if (recvd < len) {
3215                 printk(KERN_WARNING "NFS: server cheating in readlink reply: "
3216                                 "count %u > recvd %u\n", len, recvd);
3217                 return -EIO;
3218         }
3219         xdr_read_pages(xdr, len);
3220         /*
3221          * The XDR encode routine has set things up so that
3222          * the link text will be copied directly into the
3223          * buffer.  We just have to do overflow-checking,
3224          * and and null-terminate the text (the VFS expects
3225          * null-termination).
3226          */
3227         kaddr = (char *)kmap_atomic(rcvbuf->pages[0], KM_USER0);
3228         kaddr[len+rcvbuf->page_base] = '\0';
3229         kunmap_atomic(kaddr, KM_USER0);
3230         return 0;
3231 }
3232
3233 static int decode_remove(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
3234 {
3235         int status;
3236
3237         status = decode_op_hdr(xdr, OP_REMOVE);
3238         if (status)
3239                 goto out;
3240         status = decode_change_info(xdr, cinfo);
3241 out:
3242         return status;
3243 }
3244
3245 static int decode_rename(struct xdr_stream *xdr, struct nfs4_change_info *old_cinfo,
3246               struct nfs4_change_info *new_cinfo)
3247 {
3248         int status;
3249
3250         status = decode_op_hdr(xdr, OP_RENAME);
3251         if (status)
3252                 goto out;
3253         if ((status = decode_change_info(xdr, old_cinfo)))
3254                 goto out;
3255         status = decode_change_info(xdr, new_cinfo);
3256 out:
3257         return status;
3258 }
3259
3260 static int decode_renew(struct xdr_stream *xdr)
3261 {
3262         return decode_op_hdr(xdr, OP_RENEW);
3263 }
3264
3265 static int
3266 decode_restorefh(struct xdr_stream *xdr)
3267 {
3268         return decode_op_hdr(xdr, OP_RESTOREFH);
3269 }
3270
3271 static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req,
3272                 size_t *acl_len)
3273 {
3274         uint32_t *savep;
3275         uint32_t attrlen,
3276                  bitmap[2] = {0};
3277         struct kvec *iov = req->rq_rcv_buf.head;
3278         int status;
3279
3280         *acl_len = 0;
3281         if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
3282                 goto out;
3283         if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
3284                 goto out;
3285         if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
3286                 goto out;
3287
3288         if (unlikely(bitmap[0] & (FATTR4_WORD0_ACL - 1U)))
3289                 return -EIO;
3290         if (likely(bitmap[0] & FATTR4_WORD0_ACL)) {
3291                 int hdrlen, recvd;
3292
3293                 /* We ignore &savep and don't do consistency checks on
3294                  * the attr length.  Let userspace figure it out.... */
3295                 hdrlen = (u8 *)xdr->p - (u8 *)iov->iov_base;
3296                 recvd = req->rq_rcv_buf.len - hdrlen;
3297                 if (attrlen > recvd) {
3298                         printk(KERN_WARNING "NFS: server cheating in getattr"
3299                                         " acl reply: attrlen %u > recvd %u\n",
3300                                         attrlen, recvd);
3301                         return -EINVAL;
3302                 }
3303                 if (attrlen <= *acl_len)
3304                         xdr_read_pages(xdr, attrlen);
3305                 *acl_len = attrlen;
3306         } else
3307                 status = -EOPNOTSUPP;
3308
3309 out:
3310         return status;
3311 }
3312
3313 static int
3314 decode_savefh(struct xdr_stream *xdr)
3315 {
3316         return decode_op_hdr(xdr, OP_SAVEFH);
3317 }
3318
3319 static int decode_setattr(struct xdr_stream *xdr, struct nfs_setattrres *res)
3320 {
3321         uint32_t *p;
3322         uint32_t bmlen;
3323         int status;
3324
3325
3326         status = decode_op_hdr(xdr, OP_SETATTR);
3327         if (status)
3328                 return status;
3329         READ_BUF(4);
3330         READ32(bmlen);
3331         READ_BUF(bmlen << 2);
3332         return 0;
3333 }
3334
3335 static int decode_setclientid(struct xdr_stream *xdr, struct nfs4_client *clp)
3336 {
3337         uint32_t *p;
3338         uint32_t opnum;
3339         int32_t nfserr;
3340
3341         READ_BUF(8);
3342         READ32(opnum);
3343         if (opnum != OP_SETCLIENTID) {
3344                 printk(KERN_NOTICE
3345                                 "nfs4_decode_setclientid: Server returned operation"
3346                                 " %d\n", opnum);
3347                 return -EIO;
3348         }
3349         READ32(nfserr);
3350         if (nfserr == NFS_OK) {
3351                 READ_BUF(8 + sizeof(clp->cl_confirm.data));
3352                 READ64(clp->cl_clientid);
3353                 COPYMEM(clp->cl_confirm.data, sizeof(clp->cl_confirm.data));
3354         } else if (nfserr == NFSERR_CLID_INUSE) {
3355                 uint32_t len;
3356
3357                 /* skip netid string */
3358                 READ_BUF(4);
3359                 READ32(len);
3360                 READ_BUF(len);
3361
3362                 /* skip uaddr string */
3363                 READ_BUF(4);
3364                 READ32(len);
3365                 READ_BUF(len);
3366                 return -NFSERR_CLID_INUSE;
3367         } else
3368                 return -nfs_stat_to_errno(nfserr);
3369
3370         return 0;
3371 }
3372
3373 static int decode_setclientid_confirm(struct xdr_stream *xdr)
3374 {
3375         return decode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM);
3376 }
3377
3378 static int decode_write(struct xdr_stream *xdr, struct nfs_writeres *res)
3379 {
3380         uint32_t *p;
3381         int status;
3382
3383         status = decode_op_hdr(xdr, OP_WRITE);
3384         if (status)
3385                 return status;
3386
3387         READ_BUF(16);
3388         READ32(res->count);
3389         READ32(res->verf->committed);
3390         COPYMEM(res->verf->verifier, 8);
3391         return 0;
3392 }
3393
3394 static int decode_delegreturn(struct xdr_stream *xdr)
3395 {
3396         return decode_op_hdr(xdr, OP_DELEGRETURN);
3397 }
3398
3399 /*
3400  * Decode OPEN_DOWNGRADE response
3401  */
3402 static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_closeres *res)
3403 {
3404         struct xdr_stream xdr;
3405         struct compound_hdr hdr;
3406         int status;
3407
3408         xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3409         status = decode_compound_hdr(&xdr, &hdr);
3410         if (status)
3411                 goto out;
3412         status = decode_putfh(&xdr);
3413         if (status)
3414                 goto out;
3415         status = decode_open_downgrade(&xdr, res);
3416         if (status != 0)
3417                 goto out;
3418         decode_getfattr(&xdr, res->fattr, res->server);
3419 out:
3420         return status;
3421 }
3422
3423 /*
3424  * END OF "GENERIC" DECODE ROUTINES.
3425  */
3426
3427 /*
3428  * Decode ACCESS response
3429  */
3430 static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_accessres *res)
3431 {
3432         struct xdr_stream xdr;
3433         struct compound_hdr hdr;
3434         int status;
3435
3436         xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3437         if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3438                 goto out;
3439         if ((status = decode_putfh(&xdr)) == 0)
3440                 status = decode_access(&xdr, res);
3441 out:
3442         return status;
3443 }
3444
3445 /*
3446  * Decode LOOKUP response
3447  */
3448 static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_lookup_res *res)
3449 {
3450         struct xdr_stream xdr;
3451         struct compound_hdr hdr;
3452         int status;
3453
3454         xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3455         if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3456                 goto out;
3457         if ((status = decode_putfh(&xdr)) != 0)
3458                 goto out;
3459         if ((status = decode_lookup(&xdr)) != 0)
3460                 goto out;
3461         if ((status = decode_getfh(&xdr, res->fh)) != 0)
3462                 goto out;
3463         status = decode_getfattr(&xdr, res->fattr, res->server);
3464 out:
3465         return status;
3466 }
3467
3468 /*
3469  * Decode LOOKUP_ROOT response
3470  */
3471 static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_lookup_res *res)
3472 {
3473         struct xdr_stream xdr;
3474         struct compound_hdr hdr;
3475         int status;
3476
3477         xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3478         if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3479                 goto out;
3480         if ((status = decode_putrootfh(&xdr)) != 0)
3481                 goto out;
3482         if ((status = decode_getfh(&xdr, res->fh)) == 0)
3483                 status = decode_getfattr(&xdr, res->fattr, res->server);
3484 out:
3485         return status;
3486 }
3487
3488 /*
3489  * Decode REMOVE response
3490  */
3491 static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_change_info *cinfo)
3492 {
3493         struct xdr_stream xdr;
3494         struct compound_hdr hdr;
3495         int status;
3496
3497         xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3498         if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3499                 goto out;
3500         if ((status = decode_putfh(&xdr)) == 0)
3501                 status = decode_remove(&xdr, cinfo);
3502 out:
3503         return status;
3504 }
3505
3506 /*
3507  * Decode RENAME response
3508  */
3509 static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_rename_res *res)
3510 {
3511         struct xdr_stream xdr;
3512         struct compound_hdr hdr;
3513         int status;
3514
3515         xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3516         if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3517                 goto out;
3518         if ((status = decode_putfh(&xdr)) != 0)
3519                 goto out;
3520         if ((status = decode_savefh(&xdr)) != 0)
3521                 goto out;
3522         if ((status = decode_putfh(&xdr)) != 0)
3523                 goto out;
3524         status = decode_rename(&xdr, &res->old_cinfo, &res->new_cinfo);
3525 out:
3526         return status;
3527 }
3528
3529 /*
3530  * Decode LINK response
3531  */
3532 static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_change_info *cinfo)
3533 {
3534         struct xdr_stream xdr;
3535         struct compound_hdr hdr;
3536         int status;
3537
3538         xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3539         if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3540                 goto out;
3541         if ((status = decode_putfh(&xdr)) != 0)
3542                 goto out;
3543         if ((status = decode_savefh(&xdr)) != 0)
3544                 goto out;
3545         if ((status = decode_putfh(&xdr)) != 0)
3546                 goto out;
3547         status = decode_link(&xdr, cinfo);
3548 out:
3549         return status;
3550 }
3551
3552 /*
3553  * Decode CREATE response
3554  */
3555 static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_create_res *res)
3556 {
3557         struct xdr_stream xdr;
3558         struct compound_hdr hdr;
3559         int status;
3560
3561         xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3562         if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3563                 goto out;
3564         if ((status = decode_putfh(&xdr)) != 0)
3565                 goto out;
3566         if ((status = decode_savefh(&xdr)) != 0)
3567                 goto out;
3568         if ((status = decode_create(&xdr,&res->dir_cinfo)) != 0)
3569                 goto out;
3570         if ((status = decode_getfh(&xdr, res->fh)) != 0)
3571                 goto out;
3572         if (decode_getfattr(&xdr, res->fattr, res->server) != 0)
3573                 goto out;
3574         if ((status = decode_restorefh(&xdr)) != 0)
3575                 goto out;
3576         decode_getfattr(&xdr, res->dir_fattr, res->server);
3577 out:
3578         return status;
3579 }
3580
3581 /*
3582  * Decode SYMLINK response
3583  */
3584 static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_create_res *res)
3585 {
3586         return nfs4_xdr_dec_create(rqstp, p, res);
3587 }
3588
3589 /*
3590  * Decode GETATTR response
3591  */
3592 static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_getattr_res *res)
3593 {
3594         struct xdr_stream xdr;
3595         struct compound_hdr hdr;
3596         int status;
3597
3598         xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3599         status = decode_compound_hdr(&xdr, &hdr);
3600         if (status)
3601                 goto out;
3602         status = decode_putfh(&xdr);
3603         if (status)
3604                 goto out;
3605         status = decode_getfattr(&xdr, res->fattr, res->server);
3606 out:
3607         return status;
3608
3609 }
3610
3611 /*
3612  * Encode an SETACL request
3613  */
3614 static int
3615 nfs4_xdr_enc_setacl(struct rpc_rqst *req, uint32_t *p, struct nfs_setaclargs *args)
3616 {
3617         struct xdr_stream xdr;
3618         struct compound_hdr hdr = {
3619                 .nops   = 2,
3620         };
3621         int status;
3622
3623         xdr_init_encode(&xdr, &req->rq_snd_buf, p);
3624         encode_compound_hdr(&xdr, &hdr);
3625         status = encode_putfh(&xdr, args->fh);
3626         if (status)
3627                 goto out;
3628         status = encode_setacl(&xdr, args);
3629 out:
3630         return status;
3631 }
3632 /*
3633  * Decode SETACL response
3634  */
3635 static int
3636 nfs4_xdr_dec_setacl(struct rpc_rqst *rqstp, uint32_t *p, void *res)
3637 {
3638         struct xdr_stream xdr;
3639         struct compound_hdr hdr;
3640         int status;
3641
3642         xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3643         status = decode_compound_hdr(&xdr, &hdr);
3644         if (status)
3645                 goto out;
3646         status = decode_putfh(&xdr);
3647         if (status)
3648                 goto out;
3649         status = decode_setattr(&xdr, res);
3650 out:
3651         return status;
3652 }
3653
3654 /*
3655  * Decode GETACL response
3656  */
3657 static int
3658 nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, uint32_t *p, size_t *acl_len)
3659 {
3660         struct xdr_stream xdr;
3661         struct compound_hdr hdr;
3662         int status;
3663
3664         xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3665         status = decode_compound_hdr(&xdr, &hdr);
3666         if (status)
3667                 goto out;
3668         status = decode_putfh(&xdr);
3669         if (status)
3670                 goto out;
3671         status = decode_getacl(&xdr, rqstp, acl_len);
3672
3673 out:
3674         return status;
3675 }
3676
3677 /*
3678  * Decode CLOSE response
3679  */
3680 static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_closeres *res)
3681 {
3682         struct xdr_stream xdr;
3683         struct compound_hdr hdr;
3684         int status;
3685
3686         xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3687         status = decode_compound_hdr(&xdr, &hdr);
3688         if (status)
3689                 goto out;
3690         status = decode_putfh(&xdr);
3691         if (status)
3692                 goto out;
3693         status = decode_close(&xdr, res);
3694         if (status != 0)
3695                 goto out;
3696         /*
3697          * Note: Server may do delete on close for this file
3698          *      in which case the getattr call will fail with
3699          *      an ESTALE error. Shouldn't be a problem,
3700          *      though, since fattr->valid will remain unset.
3701          */
3702         decode_getfattr(&xdr, res->fattr, res->server);
3703 out:
3704         return status;
3705 }
3706
3707 /*
3708  * Decode OPEN response
3709  */
3710 static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_openres *res)
3711 {
3712         struct xdr_stream xdr;
3713         struct compound_hdr hdr;
3714         int status;
3715
3716         xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3717         status = decode_compound_hdr(&xdr, &hdr);
3718         if (status)
3719                 goto out;
3720         status = decode_putfh(&xdr);
3721         if (status)
3722                 goto out;
3723         status = decode_savefh(&xdr);
3724         if (status)
3725                 goto out;
3726         status = decode_open(&xdr, res);
3727         if (status)
3728                 goto out;
3729         status = decode_getfh(&xdr, &res->fh);
3730         if (status)
3731                 goto out;
3732         if (decode_getfattr(&xdr, res->f_attr, res->server) != 0)
3733                 goto out;
3734         if ((status = decode_restorefh(&xdr)) != 0)
3735                 goto out;
3736         decode_getfattr(&xdr, res->dir_attr, res->server);
3737 out:
3738         return status;
3739 }
3740
3741 /*
3742  * Decode OPEN_CONFIRM response
3743  */
3744 static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_open_confirmres *res)
3745 {
3746         struct xdr_stream xdr;
3747         struct compound_hdr hdr;
3748         int status;
3749
3750         xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3751         status = decode_compound_hdr(&xdr, &hdr);
3752         if (status)
3753                 goto out;
3754         status = decode_putfh(&xdr);
3755         if (status)
3756                 goto out;
3757         status = decode_open_confirm(&xdr, res);
3758 out:
3759         return status;
3760 }
3761
3762 /*
3763  * Decode OPEN response
3764  */
3765 static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_openres *res)
3766 {
3767         struct xdr_stream xdr;
3768         struct compound_hdr hdr;
3769         int status;
3770
3771         xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3772         status = decode_compound_hdr(&xdr, &hdr);
3773         if (status)
3774                 goto out;
3775         status = decode_putfh(&xdr);
3776         if (status)
3777                 goto out;
3778         status = decode_open(&xdr, res);
3779 out:
3780         return status;
3781 }
3782
3783 /*
3784  * Decode SETATTR response
3785  */
3786 static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_setattrres *res)
3787 {
3788         struct xdr_stream xdr;
3789         struct compound_hdr hdr;
3790         int status;
3791
3792         xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3793         status = decode_compound_hdr(&xdr, &hdr);
3794         if (status)
3795                 goto out;
3796         status = decode_putfh(&xdr);
3797         if (status)
3798                 goto out;
3799         status = decode_setattr(&xdr, res);
3800         if (status)
3801                 goto out;
3802         status = decode_getfattr(&xdr, res->fattr, res->server);
3803         if (status == NFS4ERR_DELAY)
3804                 status = 0;
3805 out:
3806         return status;
3807 }
3808
3809 /*
3810  * Decode LOCK response
3811  */
3812 static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_lockres *res)
3813 {
3814         struct xdr_stream xdr;
3815         struct compound_hdr hdr;
3816         int status;
3817
3818         xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3819         status = decode_compound_hdr(&xdr, &hdr);
3820         if (status)
3821                 goto out;
3822         status = decode_putfh(&xdr);
3823         if (status)
3824                 goto out;
3825         status = decode_lock(&xdr, res);
3826 out:
3827         return status;
3828 }
3829
3830 /*
3831  * Decode LOCKT response
3832  */
3833 static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_lockres *res)
3834 {
3835         struct xdr_stream xdr;
3836         struct compound_hdr hdr;
3837         int status;
3838
3839         xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3840         status = decode_compound_hdr(&xdr, &hdr);
3841         if (status)
3842                 goto out;
3843         status = decode_putfh(&xdr);
3844         if (status)
3845                 goto out;
3846         status = decode_lockt(&xdr, res);
3847 out:
3848         return status;
3849 }
3850
3851 /*
3852  * Decode LOCKU response
3853  */
3854 static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_lockres *res)
3855 {
3856         struct xdr_stream xdr;
3857         struct compound_hdr hdr;
3858         int status;
3859
3860         xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3861         status = decode_compound_hdr(&xdr, &hdr);
3862         if (status)
3863                 goto out;
3864         status = decode_putfh(&xdr);
3865         if (status)
3866                 goto out;
3867         status = decode_locku(&xdr, res);
3868 out:
3869         return status;
3870 }
3871
3872 /*
3873  * Decode READLINK response
3874  */
3875 static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp, uint32_t *p, void *res)
3876 {
3877         struct xdr_stream xdr;
3878         struct compound_hdr hdr;
3879         int status;
3880
3881         xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3882         status = decode_compound_hdr(&xdr, &hdr);
3883         if (status)
3884                 goto out;
3885         status = decode_putfh(&xdr);
3886         if (status)
3887                 goto out;
3888         status = decode_readlink(&xdr, rqstp);
3889 out:
3890         return status;
3891 }
3892
3893 /*
3894  * Decode READDIR response
3895  */
3896 static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_readdir_res *res)
3897 {
3898         struct xdr_stream xdr;
3899         struct compound_hdr hdr;
3900         int status;
3901
3902         xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3903         status = decode_compound_hdr(&xdr, &hdr);
3904         if (status)
3905                 goto out;
3906         status = decode_putfh(&xdr);
3907         if (status)
3908                 goto out;
3909         status = decode_readdir(&xdr, rqstp, res);
3910 out:
3911         return status;
3912 }
3913
3914 /*
3915  * Decode Read response
3916  */
3917 static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_readres *res)
3918 {
3919         struct xdr_stream xdr;
3920         struct compound_hdr hdr;
3921         int status;
3922
3923         xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3924         status = decode_compound_hdr(&xdr, &hdr);
3925         if (status)
3926                 goto out;
3927         status = decode_putfh(&xdr);
3928         if (status)
3929                 goto out;
3930         status = decode_read(&xdr, rqstp, res);
3931         if (!status)
3932                 status = res->count;
3933 out:
3934         return status;
3935 }
3936
3937 /*
3938  * Decode WRITE response
3939  */
3940 static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_writeres *res)
3941 {
3942         struct xdr_stream xdr;
3943         struct compound_hdr hdr;
3944         int status;
3945
3946         xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3947         status = decode_compound_hdr(&xdr, &hdr);
3948         if (status)
3949                 goto out;
3950         status = decode_putfh(&xdr);
3951         if (status)
3952                 goto out;
3953         status = decode_write(&xdr, res);
3954         if (!status)
3955                 status = res->count;
3956 out:
3957         return status;
3958 }
3959
3960 /*
3961  * Decode COMMIT response
3962  */
3963 static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_writeres *res)
3964 {
3965         struct xdr_stream xdr;
3966         struct compound_hdr hdr;
3967         int status;
3968
3969         xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3970         status = decode_compound_hdr(&xdr, &hdr);
3971         if (status)
3972                 goto out;
3973         status = decode_putfh(&xdr);
3974         if (status)
3975                 goto out;
3976         status = decode_commit(&xdr, res);
3977 out:
3978         return status;
3979 }
3980
3981 /*
3982  * FSINFO request
3983  */
3984 static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, uint32_t *p, struct nfs_fsinfo *fsinfo)
3985 {
3986         struct xdr_stream xdr;
3987         struct compound_hdr hdr;
3988         int status;
3989
3990         xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
3991         status = decode_compound_hdr(&xdr, &hdr);
3992         if (!status)
3993                 status = decode_putfh(&xdr);
3994         if (!status)
3995                 status = decode_fsinfo(&xdr, fsinfo);
3996         if (!status)
3997                 status = -nfs_stat_to_errno(hdr.status);
3998         return status;
3999 }
4000
4001 /*
4002  * PATHCONF request
4003  */
4004 static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, uint32_t *p, struct nfs_pathconf *pathconf)
4005 {
4006         struct xdr_stream xdr;
4007         struct compound_hdr hdr;
4008         int status;
4009
4010         xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4011         status = decode_compound_hdr(&xdr, &hdr);
4012         if (!status)
4013                 status = decode_putfh(&xdr);
4014         if (!status)
4015                 status = decode_pathconf(&xdr, pathconf);
4016         return status;
4017 }
4018
4019 /*
4020  * STATFS request
4021  */
4022 static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, uint32_t *p, struct nfs_fsstat *fsstat)
4023 {
4024         struct xdr_stream xdr;
4025         struct compound_hdr hdr;
4026         int status;
4027
4028         xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4029         status = decode_compound_hdr(&xdr, &hdr);
4030         if (!status)
4031                 status = decode_putfh(&xdr);
4032         if (!status)
4033                 status = decode_statfs(&xdr, fsstat);
4034         return status;
4035 }
4036
4037 /*
4038  * GETATTR_BITMAP request
4039  */
4040 static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req, uint32_t *p, struct nfs4_server_caps_res *res)
4041 {
4042         struct xdr_stream xdr;
4043         struct compound_hdr hdr;
4044         int status;
4045
4046         xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4047         if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
4048                 goto out;
4049         if ((status = decode_putfh(&xdr)) != 0)
4050                 goto out;
4051         status = decode_server_caps(&xdr, res);
4052 out:
4053         return status;
4054 }
4055
4056 /*
4057  * Decode RENEW response
4058  */
4059 static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, uint32_t *p, void *dummy)
4060 {
4061         struct xdr_stream xdr;
4062         struct compound_hdr hdr;
4063         int status;
4064
4065         xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4066         status = decode_compound_hdr(&xdr, &hdr);
4067         if (!status)
4068                 status = decode_renew(&xdr);
4069         return status;
4070 }
4071
4072 /*
4073  * a SETCLIENTID request
4074  */
4075 static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req, uint32_t *p,
4076                 struct nfs4_client *clp)
4077 {
4078         struct xdr_stream xdr;
4079         struct compound_hdr hdr;
4080         int status;
4081
4082         xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4083         status = decode_compound_hdr(&xdr, &hdr);
4084         if (!status)
4085                 status = decode_setclientid(&xdr, clp);
4086         if (!status)
4087                 status = -nfs_stat_to_errno(hdr.status);
4088         return status;
4089 }
4090
4091 /*
4092  * a SETCLIENTID_CONFIRM request
4093  */
4094 static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req, uint32_t *p, struct nfs_fsinfo *fsinfo)
4095 {
4096         struct xdr_stream xdr;
4097         struct compound_hdr hdr;
4098         int status;
4099
4100         xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4101         status = decode_compound_hdr(&xdr, &hdr);
4102         if (!status)
4103                 status = decode_setclientid_confirm(&xdr);
4104         if (!status)
4105                 status = decode_putrootfh(&xdr);
4106         if (!status)
4107                 status = decode_fsinfo(&xdr, fsinfo);
4108         if (!status)
4109                 status = -nfs_stat_to_errno(hdr.status);
4110         return status;
4111 }
4112
4113 /*
4114  * DELEGRETURN request
4115  */
4116 static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp, uint32_t *p, void *dummy)
4117 {
4118         struct xdr_stream xdr;
4119         struct compound_hdr hdr;
4120         int status;
4121
4122         xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4123         status = decode_compound_hdr(&xdr, &hdr);
4124         if (status == 0) {
4125                 status = decode_putfh(&xdr);
4126                 if (status == 0)
4127                         status = decode_delegreturn(&xdr);
4128         }
4129         return status;
4130 }
4131
4132 uint32_t *nfs4_decode_dirent(uint32_t *p, struct nfs_entry *entry, int plus)
4133 {
4134         uint32_t bitmap[2] = {0};
4135         uint32_t len;
4136
4137         if (!*p++) {
4138                 if (!*p)
4139                         return ERR_PTR(-EAGAIN);
4140                 entry->eof = 1;
4141                 return ERR_PTR(-EBADCOOKIE);
4142         }
4143
4144         entry->prev_cookie = entry->cookie;
4145         p = xdr_decode_hyper(p, &entry->cookie);
4146         entry->len = ntohl(*p++);
4147         entry->name = (const char *) p;
4148         p += XDR_QUADLEN(entry->len);
4149
4150         /*
4151          * In case the server doesn't return an inode number,
4152          * we fake one here.  (We don't use inode number 0,
4153          * since glibc seems to choke on it...)
4154          */
4155         entry->ino = 1;
4156
4157         len = ntohl(*p++);              /* bitmap length */
4158         if (len-- > 0) {
4159                 bitmap[0] = ntohl(*p++);
4160                 if (len-- > 0) {
4161                         bitmap[1] = ntohl(*p++);
4162                         p += len;
4163                 }
4164         }
4165         len = XDR_QUADLEN(ntohl(*p++)); /* attribute buffer length */
4166         if (len > 0) {
4167                 if (bitmap[0] & FATTR4_WORD0_RDATTR_ERROR) {
4168                         bitmap[0] &= ~FATTR4_WORD0_RDATTR_ERROR;
4169                         /* Ignore the return value of rdattr_error for now */
4170                         p++;
4171                         len--;
4172                 }
4173                 if (bitmap[0] == 0 && bitmap[1] == FATTR4_WORD1_MOUNTED_ON_FILEID)
4174                         xdr_decode_hyper(p, &entry->ino);
4175                 else if (bitmap[0] == FATTR4_WORD0_FILEID)
4176                         xdr_decode_hyper(p, &entry->ino);
4177                 p += len;
4178         }
4179
4180         entry->eof = !p[0] && p[1];
4181         return p;
4182 }
4183
4184 /*
4185  * We need to translate between nfs status return values and
4186  * the local errno values which may not be the same.
4187  */
4188 static struct {
4189         int stat;
4190         int errno;
4191 } nfs_errtbl[] = {
4192         { NFS4_OK,              0               },
4193         { NFS4ERR_PERM,         EPERM           },
4194         { NFS4ERR_NOENT,        ENOENT          },
4195         { NFS4ERR_IO,           errno_NFSERR_IO },
4196         { NFS4ERR_NXIO,         ENXIO           },
4197         { NFS4ERR_ACCESS,       EACCES          },
4198         { NFS4ERR_EXIST,        EEXIST          },
4199         { NFS4ERR_XDEV,         EXDEV           },
4200         { NFS4ERR_NOTDIR,       ENOTDIR         },
4201         { NFS4ERR_ISDIR,        EISDIR          },
4202         { NFS4ERR_INVAL,        EINVAL          },
4203         { NFS4ERR_FBIG,         EFBIG           },
4204         { NFS4ERR_NOSPC,        ENOSPC          },
4205         { NFS4ERR_ROFS,         EROFS           },
4206         { NFS4ERR_MLINK,        EMLINK          },
4207         { NFS4ERR_NAMETOOLONG,  ENAMETOOLONG    },
4208         { NFS4ERR_NOTEMPTY,     ENOTEMPTY       },
4209         { NFS4ERR_DQUOT,        EDQUOT          },
4210         { NFS4ERR_STALE,        ESTALE          },
4211         { NFS4ERR_BADHANDLE,    EBADHANDLE      },
4212         { NFS4ERR_BADOWNER,     EINVAL          },
4213         { NFS4ERR_BADNAME,      EINVAL          },
4214         { NFS4ERR_BAD_COOKIE,   EBADCOOKIE      },
4215         { NFS4ERR_NOTSUPP,      ENOTSUPP        },
4216         { NFS4ERR_TOOSMALL,     ETOOSMALL       },
4217         { NFS4ERR_SERVERFAULT,  ESERVERFAULT    },
4218         { NFS4ERR_BADTYPE,      EBADTYPE        },
4219         { NFS4ERR_LOCKED,       EAGAIN          },
4220         { NFS4ERR_RESOURCE,     EREMOTEIO       },
4221         { NFS4ERR_SYMLINK,      ELOOP           },
4222         { NFS4ERR_OP_ILLEGAL,   EOPNOTSUPP      },
4223         { NFS4ERR_DEADLOCK,     EDEADLK         },
4224         { NFS4ERR_WRONGSEC,     EPERM           }, /* FIXME: this needs
4225                                                     * to be handled by a
4226                                                     * middle-layer.
4227                                                     */
4228         { -1,                   EIO             }
4229 };
4230
4231 /*
4232  * Convert an NFS error code to a local one.
4233  * This one is used jointly by NFSv2 and NFSv3.
4234  */
4235 static int
4236 nfs_stat_to_errno(int stat)
4237 {
4238         int i;
4239         for (i = 0; nfs_errtbl[i].stat != -1; i++) {
4240                 if (nfs_errtbl[i].stat == stat)
4241                         return nfs_errtbl[i].errno;
4242         }
4243         if (stat <= 10000 || stat > 10100) {
4244                 /* The server is looney tunes. */
4245                 return ESERVERFAULT;
4246         }
4247         /* If we cannot translate the error, the recovery routines should
4248          * handle it.
4249          * Note: remaining NFSv4 error codes have values > 10000, so should
4250          * not conflict with native Linux error codes.
4251          */
4252         return stat;
4253 }
4254
4255 #ifndef MAX
4256 # define MAX(a, b)      (((a) > (b))? (a) : (b))
4257 #endif
4258
4259 #define PROC(proc, argtype, restype)                            \
4260 [NFSPROC4_CLNT_##proc] = {                                      \
4261         .p_proc   = NFSPROC4_COMPOUND,                          \
4262         .p_encode = (kxdrproc_t) nfs4_xdr_##argtype,            \
4263         .p_decode = (kxdrproc_t) nfs4_xdr_##restype,            \
4264         .p_bufsiz = MAX(NFS4_##argtype##_sz,NFS4_##restype##_sz) << 2,  \
4265     }
4266
4267 struct rpc_procinfo     nfs4_procedures[] = {
4268   PROC(READ,            enc_read,       dec_read),
4269   PROC(WRITE,           enc_write,      dec_write),
4270   PROC(COMMIT,          enc_commit,     dec_commit),
4271   PROC(OPEN,            enc_open,       dec_open),
4272   PROC(OPEN_CONFIRM,    enc_open_confirm,       dec_open_confirm),
4273   PROC(OPEN_NOATTR,     enc_open_noattr,        dec_open_noattr),
4274   PROC(OPEN_DOWNGRADE,  enc_open_downgrade,     dec_open_downgrade),
4275   PROC(CLOSE,           enc_close,      dec_close),
4276   PROC(SETATTR,         enc_setattr,    dec_setattr),
4277   PROC(FSINFO,          enc_fsinfo,     dec_fsinfo),
4278   PROC(RENEW,           enc_renew,      dec_renew),
4279   PROC(SETCLIENTID,     enc_setclientid,        dec_setclientid),
4280   PROC(SETCLIENTID_CONFIRM,     enc_setclientid_confirm,        dec_setclientid_confirm),
4281   PROC(LOCK,            enc_lock,       dec_lock),
4282   PROC(LOCKT,           enc_lockt,      dec_lockt),
4283   PROC(LOCKU,           enc_locku,      dec_locku),
4284   PROC(ACCESS,          enc_access,     dec_access),
4285   PROC(GETATTR,         enc_getattr,    dec_getattr),
4286   PROC(LOOKUP,          enc_lookup,     dec_lookup),
4287   PROC(LOOKUP_ROOT,     enc_lookup_root,        dec_lookup_root),
4288   PROC(REMOVE,          enc_remove,     dec_remove),
4289   PROC(RENAME,          enc_rename,     dec_rename),
4290   PROC(LINK,            enc_link,       dec_link),
4291   PROC(SYMLINK,         enc_symlink,    dec_symlink),
4292   PROC(CREATE,          enc_create,     dec_create),
4293   PROC(PATHCONF,        enc_pathconf,   dec_pathconf),
4294   PROC(STATFS,          enc_statfs,     dec_statfs),
4295   PROC(READLINK,        enc_readlink,   dec_readlink),
4296   PROC(READDIR,         enc_readdir,    dec_readdir),
4297   PROC(SERVER_CAPS,     enc_server_caps, dec_server_caps),
4298   PROC(DELEGRETURN,     enc_delegreturn, dec_delegreturn),
4299   PROC(GETACL,          enc_getacl,     dec_getacl),
4300   PROC(SETACL,          enc_setacl,     dec_setacl),
4301 };
4302
4303 struct rpc_version              nfs_version4 = {
4304         .number                 = 4,
4305         .nrprocs                = sizeof(nfs4_procedures)/sizeof(nfs4_procedures[0]),
4306         .procs                  = nfs4_procedures
4307 };
4308
4309 /*
4310  * Local variables:
4311  *  c-basic-offset: 8
4312  * End:
4313  */