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_fsinfo_maxsz     (op_encode_hdr_maxsz + 2)
  99 #define decode_fsinfo_maxsz     (op_decode_hdr_maxsz + 11)
 100 #define encode_renew_maxsz      (op_encode_hdr_maxsz + 3)
 101 #define decode_renew_maxsz      (op_decode_hdr_maxsz)
 102 #define encode_setclientid_maxsz \
 103                                 (op_encode_hdr_maxsz + \
 104                                 4 /*server->ip_addr*/ + \
 105                                 1 /*Netid*/ + \
 106                                 6 /*uaddr*/ + \
 107                                 6 + (NFS4_VERIFIER_SIZE >> 2))
 108 #define decode_setclientid_maxsz \
 109                                 (op_decode_hdr_maxsz + \
 110                                 2 + \
 111                                 1024) /* large value for CLID_INUSE */
 112 #define encode_setclientid_confirm_maxsz \
 113                                 (op_encode_hdr_maxsz + \
 114                                 3 + (NFS4_VERIFIER_SIZE >> 2))
 115 #define decode_setclientid_confirm_maxsz \
 116                                 (op_decode_hdr_maxsz)
 117 #define encode_lookup_maxsz     (op_encode_hdr_maxsz + \
 118                                 1 + ((3 + NFS4_FHSIZE) >> 2))
 119 #define encode_remove_maxsz     (op_encode_hdr_maxsz + \
 120                                 nfs4_name_maxsz)
 121 #define encode_rename_maxsz     (op_encode_hdr_maxsz + \
 122                                 2 * nfs4_name_maxsz)
 123 #define decode_rename_maxsz     (op_decode_hdr_maxsz + 5 + 5)
 124 #define encode_link_maxsz       (op_encode_hdr_maxsz + \
 125                                 nfs4_name_maxsz)
 126 #define decode_link_maxsz       (op_decode_hdr_maxsz + 5)
 127 #define encode_symlink_maxsz    (op_encode_hdr_maxsz + \
 128                                 1 + nfs4_name_maxsz + \
 129                                 nfs4_path_maxsz + \
 130                                 nfs4_fattr_maxsz)
 131 #define decode_symlink_maxsz    (op_decode_hdr_maxsz + 8)
 132 #define encode_create_maxsz     (op_encode_hdr_maxsz + \
 133                                 2 + nfs4_name_maxsz + \
 134                                 nfs4_fattr_maxsz)
 135 #define decode_create_maxsz     (op_decode_hdr_maxsz + 8)
 136 #define encode_delegreturn_maxsz (op_encode_hdr_maxsz + 4)
 137 #define decode_delegreturn_maxsz (op_decode_hdr_maxsz)
 138 #define NFS4_enc_compound_sz    (1024)  /* XXX: large enough? */
 139 #define NFS4_dec_compound_sz    (1024)  /* XXX: large enough? */
 140 #define NFS4_enc_read_sz        (compound_encode_hdr_maxsz + \
 141                                 encode_putfh_maxsz + \
 142                                 op_encode_hdr_maxsz + 7)
 143 #define NFS4_dec_read_sz        (compound_decode_hdr_maxsz + \
 144                                 decode_putfh_maxsz + \
 145                                 op_decode_hdr_maxsz + 2)
 146 #define NFS4_enc_readlink_sz    (compound_encode_hdr_maxsz + \
 147                                 encode_putfh_maxsz + \
 148                                 op_encode_hdr_maxsz)
 149 #define NFS4_dec_readlink_sz    (compound_decode_hdr_maxsz + \
 150                                 decode_putfh_maxsz + \
 151                                 op_decode_hdr_maxsz)
 152 #define NFS4_enc_readdir_sz     (compound_encode_hdr_maxsz + \
 153                                 encode_putfh_maxsz + \
 154                                 op_encode_hdr_maxsz + 9)
 155 #define NFS4_dec_readdir_sz     (compound_decode_hdr_maxsz + \
 156                                 decode_putfh_maxsz + \
 157                                 op_decode_hdr_maxsz + 2)
 158 #define NFS4_enc_write_sz       (compound_encode_hdr_maxsz + \
 159                                 encode_putfh_maxsz + \
 160                                 op_encode_hdr_maxsz + 8)
 161 #define NFS4_dec_write_sz       (compound_decode_hdr_maxsz + \
 162                                 decode_putfh_maxsz + \
 163                                 op_decode_hdr_maxsz + 4)
 164 #define NFS4_enc_commit_sz      (compound_encode_hdr_maxsz + \
 165                                 encode_putfh_maxsz + \
 166                                 op_encode_hdr_maxsz + 3)
 167 #define NFS4_dec_commit_sz      (compound_decode_hdr_maxsz + \
 168                                 decode_putfh_maxsz + \
 169                                 op_decode_hdr_maxsz + 2)
 170 #define NFS4_enc_open_sz        (compound_encode_hdr_maxsz + \
 171                                 encode_putfh_maxsz + \
 172                                 op_encode_hdr_maxsz + \
 173                                 13 + 3 + 2 + 64 + \
 174                                 encode_getattr_maxsz + \
 175                                 encode_getfh_maxsz)
 176 #define NFS4_dec_open_sz        (compound_decode_hdr_maxsz + \
 177                                 decode_putfh_maxsz + \
 178                                 op_decode_hdr_maxsz + 4 + 5 + 2 + 3 + \
 179                                 decode_getattr_maxsz + \
 180                                 decode_getfh_maxsz)
 181 #define NFS4_enc_open_confirm_sz      \
 182                                 (compound_encode_hdr_maxsz + \
 183                                 encode_putfh_maxsz + \
 184                                 op_encode_hdr_maxsz + 5)
 185 #define NFS4_dec_open_confirm_sz        (compound_decode_hdr_maxsz + \
 186                                         decode_putfh_maxsz + \
 187                                         op_decode_hdr_maxsz + 4)
 188 #define NFS4_enc_open_noattr_sz (compound_encode_hdr_maxsz + \
 189                                         encode_putfh_maxsz + \
 190                                         op_encode_hdr_maxsz + \
 191                                         11)
 192 #define NFS4_dec_open_noattr_sz (compound_decode_hdr_maxsz + \
 193                                         decode_putfh_maxsz + \
 194                                         op_decode_hdr_maxsz + \
 195                                         4 + 5 + 2 + 3)
 196 #define NFS4_enc_open_downgrade_sz \
 197                                 (compound_encode_hdr_maxsz + \
 198                                 encode_putfh_maxsz + \
 199                                 op_encode_hdr_maxsz + 7)
 200 #define NFS4_dec_open_downgrade_sz \
 201                                 (compound_decode_hdr_maxsz + \
 202                                 decode_putfh_maxsz + \
 203                                 op_decode_hdr_maxsz + 4)
 204 #define NFS4_enc_close_sz       (compound_encode_hdr_maxsz + \
 205                                 encode_putfh_maxsz + \
 206                                 op_encode_hdr_maxsz + 5)
 207 #define NFS4_dec_close_sz       (compound_decode_hdr_maxsz + \
 208                                 decode_putfh_maxsz + \
 209                                 op_decode_hdr_maxsz + 4)
 210 #define NFS4_enc_setattr_sz     (compound_encode_hdr_maxsz + \
 211                                 encode_putfh_maxsz + \
 212                                 op_encode_hdr_maxsz + 4 + \
 213                                 nfs4_fattr_maxsz + \
 214                                 encode_getattr_maxsz)
 215 #define NFS4_dec_setattr_sz     (compound_decode_hdr_maxsz + \
 216                                 decode_putfh_maxsz + \
 217                                 op_decode_hdr_maxsz + 3)
 218 #define NFS4_enc_fsinfo_sz      (compound_encode_hdr_maxsz + \
 219                                 encode_putfh_maxsz + \
 220                                 encode_fsinfo_maxsz)
 221 #define NFS4_dec_fsinfo_sz      (compound_decode_hdr_maxsz + \
 222                                 decode_putfh_maxsz + \
 223                                 decode_fsinfo_maxsz)
 224 #define NFS4_enc_renew_sz       (compound_encode_hdr_maxsz + \
 225                                 encode_renew_maxsz)
 226 #define NFS4_dec_renew_sz       (compound_decode_hdr_maxsz + \
 227                                 decode_renew_maxsz)
 228 #define NFS4_enc_setclientid_sz (compound_encode_hdr_maxsz + \
 229                                 encode_setclientid_maxsz)
 230 #define NFS4_dec_setclientid_sz (compound_decode_hdr_maxsz + \
 231                                 decode_setclientid_maxsz)
 232 #define NFS4_enc_setclientid_confirm_sz \
 233                                 (compound_encode_hdr_maxsz + \
 234                                 encode_setclientid_confirm_maxsz + \
 235                                 encode_putrootfh_maxsz + \
 236                                 encode_fsinfo_maxsz)
 237 #define NFS4_dec_setclientid_confirm_sz \
 238                                 (compound_decode_hdr_maxsz + \
 239                                 decode_setclientid_confirm_maxsz + \
 240                                 decode_putrootfh_maxsz + \
 241                                 decode_fsinfo_maxsz)
 242 #define NFS4_enc_lock_sz        (compound_encode_hdr_maxsz + \
 243                                 encode_putfh_maxsz + \
 244                                 encode_getattr_maxsz + \
 245                                 op_encode_hdr_maxsz + \
 246                                 1 + 1 + 2 + 2 + \
 247                                 1 + 4 + 1 + 2 + \
 248                                 owner_id_maxsz)
 249 #define NFS4_dec_lock_sz        (compound_decode_hdr_maxsz + \
 250                                 decode_putfh_maxsz + \
 251                                 decode_getattr_maxsz + \
 252                                 op_decode_hdr_maxsz + \
 253                                 2 + 2 + 1 + 2 + \
 254                                 owner_id_maxsz)
 255 #define NFS4_enc_lockt_sz       (compound_encode_hdr_maxsz + \
 256                                 encode_putfh_maxsz + \
 257                                 encode_getattr_maxsz + \
 258                                 op_encode_hdr_maxsz + \
 259                                 1 + 2 + 2 + 2 + \
 260                                 owner_id_maxsz)
 261 #define NFS4_dec_lockt_sz       (NFS4_dec_lock_sz)
 262 #define NFS4_enc_locku_sz       (compound_encode_hdr_maxsz + \
 263                                 encode_putfh_maxsz + \
 264                                 encode_getattr_maxsz + \
 265                                 op_encode_hdr_maxsz + \
 266                                 1 + 1 + 4 + 2 + 2)
 267 #define NFS4_dec_locku_sz       (compound_decode_hdr_maxsz + \
 268                                 decode_putfh_maxsz + \
 269                                 decode_getattr_maxsz + \
 270                                 op_decode_hdr_maxsz + 4)
 271 #define NFS4_enc_access_sz      (compound_encode_hdr_maxsz + \
 272                                 encode_putfh_maxsz + \
 273                                 op_encode_hdr_maxsz + 1)
 274 #define NFS4_dec_access_sz      (compound_decode_hdr_maxsz + \
 275                                 decode_putfh_maxsz + \
 276                                 op_decode_hdr_maxsz + 2)
 277 #define NFS4_enc_getattr_sz     (compound_encode_hdr_maxsz + \
 278                                 encode_putfh_maxsz + \
 279                                 encode_getattr_maxsz)
 280 #define NFS4_dec_getattr_sz     (compound_decode_hdr_maxsz + \
 281                                 decode_putfh_maxsz + \
 282                                 decode_getattr_maxsz)
 283 #define NFS4_enc_lookup_sz      (compound_encode_hdr_maxsz + \
 284                                 encode_putfh_maxsz + \
 285                                 encode_lookup_maxsz + \
 286                                 encode_getattr_maxsz + \
 287                                 encode_getfh_maxsz)
 288 #define NFS4_dec_lookup_sz      (compound_decode_hdr_maxsz + \
 289                                 decode_putfh_maxsz + \
 290                                 op_decode_hdr_maxsz + \
 291                                 decode_getattr_maxsz + \
 292                                 decode_getfh_maxsz)
 293 #define NFS4_enc_lookup_root_sz (compound_encode_hdr_maxsz + \
 294                                 encode_putrootfh_maxsz + \
 295                                 encode_getattr_maxsz + \
 296                                 encode_getfh_maxsz)
 297 #define NFS4_dec_lookup_root_sz (compound_decode_hdr_maxsz + \
 298                                 decode_putrootfh_maxsz + \
 299                                 decode_getattr_maxsz + \
 300                                 decode_getfh_maxsz)
 301 #define NFS4_enc_remove_sz      (compound_encode_hdr_maxsz + \
 302                                 encode_putfh_maxsz + \
 303                                 encode_remove_maxsz)
 304 #define NFS4_dec_remove_sz      (compound_decode_hdr_maxsz + \
 305                                 decode_putfh_maxsz + \
 306                                 op_decode_hdr_maxsz + 5)
 307 #define NFS4_enc_rename_sz      (compound_encode_hdr_maxsz + \
 308                                 encode_putfh_maxsz + \
 309                                 encode_savefh_maxsz + \
 310                                 encode_putfh_maxsz + \
 311                                 encode_rename_maxsz)
 312 #define NFS4_dec_rename_sz      (compound_decode_hdr_maxsz + \
 313                                 decode_putfh_maxsz + \
 314                                 decode_savefh_maxsz + \
 315                                 decode_putfh_maxsz + \
 316                                 decode_rename_maxsz)
 317 #define NFS4_enc_link_sz        (compound_encode_hdr_maxsz + \
 318                                 encode_putfh_maxsz + \
 319                                 encode_savefh_maxsz + \
 320                                 encode_putfh_maxsz + \
 321                                 encode_link_maxsz)
 322 #define NFS4_dec_link_sz        (compound_decode_hdr_maxsz + \
 323                                 decode_putfh_maxsz + \
 324                                 decode_savefh_maxsz + \
 325                                 decode_putfh_maxsz + \
 326                                 decode_link_maxsz)
 327 #define NFS4_enc_symlink_sz     (compound_encode_hdr_maxsz + \
 328                                 encode_putfh_maxsz + \
 329                                 encode_symlink_maxsz + \
 330                                 encode_getattr_maxsz + \
 331                                 encode_getfh_maxsz)
 332 #define NFS4_dec_symlink_sz     (compound_decode_hdr_maxsz + \
 333                                 decode_putfh_maxsz + \
 334                                 decode_symlink_maxsz + \
 335                                 decode_getattr_maxsz + \
 336                                 decode_getfh_maxsz)
 337 #define NFS4_enc_create_sz      (compound_encode_hdr_maxsz + \
 338                                 encode_putfh_maxsz + \
 339                                 encode_create_maxsz + \
 340                                 encode_getattr_maxsz + \
 341                                 encode_getfh_maxsz)
 342 #define NFS4_dec_create_sz      (compound_decode_hdr_maxsz + \
 343                                 decode_putfh_maxsz + \
 344                                 decode_create_maxsz + \
 345                                 decode_getattr_maxsz + \
 346                                 decode_getfh_maxsz)
 347 #define NFS4_enc_pathconf_sz    (compound_encode_hdr_maxsz + \
 348                                 encode_putfh_maxsz + \
 349                                 encode_getattr_maxsz)
 350 #define NFS4_dec_pathconf_sz    (compound_decode_hdr_maxsz + \
 351                                 decode_putfh_maxsz + \
 352                                 decode_getattr_maxsz)
 353 #define NFS4_enc_statfs_sz      (compound_encode_hdr_maxsz + \
 354                                 encode_putfh_maxsz + \
 355                                 encode_getattr_maxsz)
 356 #define NFS4_dec_statfs_sz      (compound_decode_hdr_maxsz + \
 357                                 decode_putfh_maxsz + \
 358                                 op_decode_hdr_maxsz + 12)
 359 #define NFS4_enc_server_caps_sz (compound_encode_hdr_maxsz + \
 360                                 encode_getattr_maxsz)
 361 #define NFS4_dec_server_caps_sz (compound_decode_hdr_maxsz + \
 362                                 decode_getattr_maxsz)
 363 #define NFS4_enc_delegreturn_sz (compound_encode_hdr_maxsz + \
 364                                 encode_putfh_maxsz + \
 365                                 encode_delegreturn_maxsz)
 366 #define NFS4_dec_delegreturn_sz (compound_decode_hdr_maxsz + \
 367                                 decode_delegreturn_maxsz)
 368 #define NFS4_enc_getacl_sz      (compound_encode_hdr_maxsz + \
 369                                 encode_putfh_maxsz + \
 370                                 encode_getattr_maxsz)
 371 #define NFS4_dec_getacl_sz      (compound_decode_hdr_maxsz + \
 372                                 decode_putfh_maxsz + \
 373                                 op_decode_hdr_maxsz + \
 374                                 nfs4_fattr_bitmap_maxsz + 1)
 375 #define NFS4_enc_setacl_sz      (compound_encode_hdr_maxsz + \
 376                                 encode_putfh_maxsz + \
 377                                 op_encode_hdr_maxsz + 4 + \
 378                                 nfs4_fattr_bitmap_maxsz + 1)
 379 #define NFS4_dec_setacl_sz      (compound_decode_hdr_maxsz + \
 380                                 decode_putfh_maxsz + \
 381                                 op_decode_hdr_maxsz + nfs4_fattr_bitmap_maxsz)
 382
 383 static struct {
 384         unsigned int    mode;
 385         unsigned int    nfs2type;
 386 } nfs_type2fmt[] = {
 387         { 0,            NFNON        },
 388         { S_IFREG,      NFREG        },
 389         { S_IFDIR,      NFDIR        },
 390         { S_IFBLK,      NFBLK        },
 391         { S_IFCHR,      NFCHR        },
 392         { S_IFLNK,      NFLNK        },
 393         { S_IFSOCK,     NFSOCK       },
 394         { S_IFIFO,      NFFIFO       },
 395         { 0,            NFNON        },
 396         { 0,            NFNON        },
 397 };
 398
 399 struct compound_hdr {
 400         int32_t         status;
 401         uint32_t        nops;
 402         uint32_t        taglen;
 403         char *          tag;
 404 };
 405
 406 /*
 407  * START OF "GENERIC" ENCODE ROUTINES.
 408  *   These may look a little ugly since they are imported from a "generic"
 409  * set of XDR encode/decode routines which are intended to be shared by
 410  * all of our NFSv4 implementations (OpenBSD, MacOS X...).
 411  *
 412  * If the pain of reading these is too great, it should be a straightforward
 413  * task to translate them into Linux-specific versions which are more
 414  * consistent with the style used in NFSv2/v3...
 415  */
 416 #define WRITE32(n)               *p++ = htonl(n)
 417 #define WRITE64(n)               do {                           \
 418         *p++ = htonl((uint32_t)((n) >> 32));                            \
 419         *p++ = htonl((uint32_t)(n));                                    \
 420 } while (0)
 421 #define WRITEMEM(ptr,nbytes)     do {                           \
 422         p = xdr_encode_opaque_fixed(p, ptr, nbytes);            \
 423 } while (0)
 424
 425 #define RESERVE_SPACE(nbytes)   do {                            \
 426         p = xdr_reserve_space(xdr, nbytes);                     \
 427         if (!p) printk("RESERVE_SPACE(%d) failed in function %s\n", (int) (nbytes), __FUNCTION__); \
 428         BUG_ON(!p);                                             \
 429 } while (0)
 430
 431 static void encode_string(struct xdr_stream *xdr, unsigned int len, const char *str)
 432 {
 433         uint32_t *p;
 434
 435         p = xdr_reserve_space(xdr, 4 + len);
 436         BUG_ON(p == NULL);
 437         xdr_encode_opaque(p, str, len);
 438 }
 439
 440 static int encode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr)
 441 {
 442         uint32_t *p;
 443
 444         dprintk("encode_compound: tag=%.*s\n", (int)hdr->taglen, hdr->tag);
 445         BUG_ON(hdr->taglen > NFS4_MAXTAGLEN);
 446         RESERVE_SPACE(12+(XDR_QUADLEN(hdr->taglen)<<2));
 447         WRITE32(hdr->taglen);
 448         WRITEMEM(hdr->tag, hdr->taglen);
 449         WRITE32(NFS4_MINOR_VERSION);
 450         WRITE32(hdr->nops);
 451         return 0;
 452 }
 453
 454 static void encode_nfs4_verifier(struct xdr_stream *xdr, const nfs4_verifier *verf)
 455 {
 456         uint32_t *p;
 457
 458         p = xdr_reserve_space(xdr, NFS4_VERIFIER_SIZE);
 459         BUG_ON(p == NULL);
 460         xdr_encode_opaque_fixed(p, verf->data, NFS4_VERIFIER_SIZE);
 461 }
 462
 463 static int encode_attrs(struct xdr_stream *xdr, const struct iattr *iap, const struct nfs_server *server)
 464 {
 465         char owner_name[IDMAP_NAMESZ];
 466         char owner_group[IDMAP_NAMESZ];
 467         int owner_namelen = 0;
 468         int owner_grouplen = 0;
 469         uint32_t *p;
 470         uint32_t *q;
 471         int len;
 472         uint32_t bmval0 = 0;
 473         uint32_t bmval1 = 0;
 474         int status;
 475
 476         /*
 477          * We reserve enough space to write the entire attribute buffer at once.
 478          * In the worst-case, this would be
 479          *   12(bitmap) + 4(attrlen) + 8(size) + 4(mode) + 4(atime) + 4(mtime)
 480          *          = 36 bytes, plus any contribution from variable-length fields
 481          *            such as owner/group.
 482          */
 483         len = 16;
 484
 485         /* Sigh */
 486         if (iap->ia_valid & ATTR_SIZE)
 487                 len += 8;
 488         if (iap->ia_valid & ATTR_MODE)
 489                 len += 4;
 490         if (iap->ia_valid & ATTR_UID) {
 491                 owner_namelen = nfs_map_uid_to_name(server->nfs4_state, iap->ia_uid, owner_name);
 492                 if (owner_namelen < 0) {
 493                         printk(KERN_WARNING "nfs: couldn't resolve uid %d to string\n",
 494                                iap->ia_uid);
 495                         /* XXX */
 496                         strcpy(owner_name, "nobody");
 497                         owner_namelen = sizeof("nobody") - 1;
 498                         /* goto out; */
 499                 }
 500                 len += 4 + (XDR_QUADLEN(owner_namelen) << 2);
 501         }
 502         if (iap->ia_valid & ATTR_GID) {
 503                 owner_grouplen = nfs_map_gid_to_group(server->nfs4_state, iap->ia_gid, owner_group);
 504                 if (owner_grouplen < 0) {
 505                         printk(KERN_WARNING "nfs4: couldn't resolve gid %d to string\n",
 506                                iap->ia_gid);
 507                         strcpy(owner_group, "nobody");
 508                         owner_grouplen = sizeof("nobody") - 1;
 509                         /* goto out; */
 510                 }
 511                 len += 4 + (XDR_QUADLEN(owner_grouplen) << 2);
 512         }
 513         if (iap->ia_valid & ATTR_ATIME_SET)
 514                 len += 16;
 515         else if (iap->ia_valid & ATTR_ATIME)
 516                 len += 4;
 517         if (iap->ia_valid & ATTR_MTIME_SET)
 518                 len += 16;
 519         else if (iap->ia_valid & ATTR_MTIME)
 520                 len += 4;
 521         RESERVE_SPACE(len);
 522
 523         /*
 524          * We write the bitmap length now, but leave the bitmap and the attribute
 525          * buffer length to be backfilled at the end of this routine.
 526          */
 527         WRITE32(2);
 528         q = p;
 529         p += 3;
 530
 531         if (iap->ia_valid & ATTR_SIZE) {
 532                 bmval0 |= FATTR4_WORD0_SIZE;
 533                 WRITE64(iap->ia_size);
 534         }
 535         if (iap->ia_valid & ATTR_MODE) {
 536                 bmval1 |= FATTR4_WORD1_MODE;
 537                 WRITE32(iap->ia_mode);
 538         }
 539         if (iap->ia_valid & ATTR_UID) {
 540                 bmval1 |= FATTR4_WORD1_OWNER;
 541                 WRITE32(owner_namelen);
 542                 WRITEMEM(owner_name, owner_namelen);
 543         }
 544         if (iap->ia_valid & ATTR_GID) {
 545                 bmval1 |= FATTR4_WORD1_OWNER_GROUP;
 546                 WRITE32(owner_grouplen);
 547                 WRITEMEM(owner_group, owner_grouplen);
 548         }
 549         if (iap->ia_valid & ATTR_ATIME_SET) {
 550                 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET;
 551                 WRITE32(NFS4_SET_TO_CLIENT_TIME);
 552                 WRITE32(0);
 553                 WRITE32(iap->ia_mtime.tv_sec);
 554                 WRITE32(iap->ia_mtime.tv_nsec);
 555         }
 556         else if (iap->ia_valid & ATTR_ATIME) {
 557                 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET;
 558                 WRITE32(NFS4_SET_TO_SERVER_TIME);
 559         }
 560         if (iap->ia_valid & ATTR_MTIME_SET) {
 561                 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET;
 562                 WRITE32(NFS4_SET_TO_CLIENT_TIME);
 563                 WRITE32(0);
 564                 WRITE32(iap->ia_mtime.tv_sec);
 565                 WRITE32(iap->ia_mtime.tv_nsec);
 566         }
 567         else if (iap->ia_valid & ATTR_MTIME) {
 568                 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET;
 569                 WRITE32(NFS4_SET_TO_SERVER_TIME);
 570         }
 571
 572         /*
 573          * Now we backfill the bitmap and the attribute buffer length.
 574          */
 575         if (len != ((char *)p - (char *)q) + 4) {
 576                 printk ("encode_attr: Attr length calculation error! %u != %Zu\n",
 577                                 len, ((char *)p - (char *)q) + 4);
 578                 BUG();
 579         }
 580         len = (char *)p - (char *)q - 12;
 581         *q++ = htonl(bmval0);
 582         *q++ = htonl(bmval1);
 583         *q++ = htonl(len);
 584
 585         status = 0;
 586 /* out: */
 587         return status;
 588 }
 589
 590 static int encode_access(struct xdr_stream *xdr, u32 access)
 591 {
 592         uint32_t *p;
 593
 594         RESERVE_SPACE(8);
 595         WRITE32(OP_ACCESS);
 596         WRITE32(access);
 597
 598         return 0;
 599 }
 600
 601 static int encode_close(struct xdr_stream *xdr, const struct nfs_closeargs *arg)
 602 {
 603         uint32_t *p;
 604
 605         RESERVE_SPACE(8+sizeof(arg->stateid->data));
 606         WRITE32(OP_CLOSE);
 607         WRITE32(arg->seqid->sequence->counter);
 608         WRITEMEM(arg->stateid->data, sizeof(arg->stateid->data));
 609
 610         return 0;
 611 }
 612
 613 static int encode_commit(struct xdr_stream *xdr, const struct nfs_writeargs *args)
 614 {
 615         uint32_t *p;
 616
 617         RESERVE_SPACE(16);
 618         WRITE32(OP_COMMIT);
 619         WRITE64(args->offset);
 620         WRITE32(args->count);
 621
 622         return 0;
 623 }
 624
 625 static int encode_create(struct xdr_stream *xdr, const struct nfs4_create_arg *create)
 626 {
 627         uint32_t *p;
 628
 629         RESERVE_SPACE(8);
 630         WRITE32(OP_CREATE);
 631         WRITE32(create->ftype);
 632
 633         switch (create->ftype) {
 634         case NF4LNK:
 635                 RESERVE_SPACE(4 + create->u.symlink->len);
 636                 WRITE32(create->u.symlink->len);
 637                 WRITEMEM(create->u.symlink->name, create->u.symlink->len);
 638                 break;
 639
 640         case NF4BLK: case NF4CHR:
 641                 RESERVE_SPACE(8);
 642                 WRITE32(create->u.device.specdata1);
 643                 WRITE32(create->u.device.specdata2);
 644                 break;
 645
 646         default:
 647                 break;
 648         }
 649
 650         RESERVE_SPACE(4 + create->name->len);
 651         WRITE32(create->name->len);
 652         WRITEMEM(create->name->name, create->name->len);
 653
 654         return encode_attrs(xdr, create->attrs, create->server);
 655 }
 656
 657 static int encode_getattr_one(struct xdr_stream *xdr, uint32_t bitmap)
 658 {
 659         uint32_t *p;
 660
 661         RESERVE_SPACE(12);
 662         WRITE32(OP_GETATTR);
 663         WRITE32(1);
 664         WRITE32(bitmap);
 665         return 0;
 666 }
 667
 668 static int encode_getattr_two(struct xdr_stream *xdr, uint32_t bm0, uint32_t bm1)
 669 {
 670         uint32_t *p;
 671
 672         RESERVE_SPACE(16);
 673         WRITE32(OP_GETATTR);
 674         WRITE32(2);
 675         WRITE32(bm0);
 676         WRITE32(bm1);
 677         return 0;
 678 }
 679
 680 static int encode_getfattr(struct xdr_stream *xdr, const u32* bitmask)
 681 {
 682         return encode_getattr_two(xdr,
 683                         bitmask[0] & nfs4_fattr_bitmap[0],
 684                         bitmask[1] & nfs4_fattr_bitmap[1]);
 685 }
 686
 687 static int encode_fsinfo(struct xdr_stream *xdr, const u32* bitmask)
 688 {
 689         return encode_getattr_two(xdr, bitmask[0] & nfs4_fsinfo_bitmap[0],
 690                         bitmask[1] & nfs4_fsinfo_bitmap[1]);
 691 }
 692
 693 static int encode_getfh(struct xdr_stream *xdr)
 694 {
 695         uint32_t *p;
 696
 697         RESERVE_SPACE(4);
 698         WRITE32(OP_GETFH);
 699
 700         return 0;
 701 }
 702
 703 static int encode_link(struct xdr_stream *xdr, const struct qstr *name)
 704 {
 705         uint32_t *p;
 706
 707         RESERVE_SPACE(8 + name->len);
 708         WRITE32(OP_LINK);
 709         WRITE32(name->len);
 710         WRITEMEM(name->name, name->len);
 711
 712         return 0;
 713 }
 714
 715 /*
 716  * opcode,type,reclaim,offset,length,new_lock_owner = 32
 717  * open_seqid,open_stateid,lock_seqid,lock_owner.clientid, lock_owner.id = 40
 718  */
 719 static int encode_lock(struct xdr_stream *xdr, const struct nfs_lockargs *arg)
 720 {
 721         uint32_t *p;
 722         struct nfs_lock_opargs *opargs = arg->u.lock;
 723
 724         RESERVE_SPACE(32);
 725         WRITE32(OP_LOCK);
 726         WRITE32(arg->type);
 727         WRITE32(opargs->reclaim);
 728         WRITE64(arg->offset);
 729         WRITE64(arg->length);
 730         WRITE32(opargs->new_lock_owner);
 731         if (opargs->new_lock_owner){
 732                 struct nfs_open_to_lock *ol = opargs->u.open_lock;
 733
 734                 RESERVE_SPACE(40);
 735                 WRITE32(ol->open_seqid->sequence->counter);
 736                 WRITEMEM(&ol->open_stateid, sizeof(ol->open_stateid));
 737                 WRITE32(ol->lock_seqid->sequence->counter);
 738                 WRITE64(ol->lock_owner.clientid);
 739                 WRITE32(4);
 740                 WRITE32(ol->lock_owner.id);
 741         }
 742         else {
 743                 struct nfs_exist_lock *el = opargs->u.exist_lock;
 744
 745                 RESERVE_SPACE(20);
 746                 WRITEMEM(&el->stateid, sizeof(el->stateid));
 747                 WRITE32(el->seqid->sequence->counter);
 748         }
 749
 750         return 0;
 751 }
 752
 753 static int encode_lockt(struct xdr_stream *xdr, const struct nfs_lockargs *arg)
 754 {
 755         uint32_t *p;
 756         struct nfs_lowner *opargs = arg->u.lockt;
 757
 758         RESERVE_SPACE(40);
 759         WRITE32(OP_LOCKT);
 760         WRITE32(arg->type);
 761         WRITE64(arg->offset);
 762         WRITE64(arg->length);
 763         WRITE64(opargs->clientid);
 764         WRITE32(4);
 765         WRITE32(opargs->id);
 766
 767         return 0;
 768 }
 769
 770 static int encode_locku(struct xdr_stream *xdr, const struct nfs_lockargs *arg)
 771 {
 772         uint32_t *p;
 773         struct nfs_locku_opargs *opargs = arg->u.locku;
 774
 775         RESERVE_SPACE(44);
 776         WRITE32(OP_LOCKU);
 777         WRITE32(arg->type);
 778         WRITE32(opargs->seqid->sequence->counter);
 779         WRITEMEM(opargs->stateid->data, sizeof(opargs->stateid->data));
 780         WRITE64(arg->offset);
 781         WRITE64(arg->length);
 782
 783         return 0;
 784 }
 785
 786 static int encode_lookup(struct xdr_stream *xdr, const struct qstr *name)
 787 {
 788         int len = name->len;
 789         uint32_t *p;
 790
 791         RESERVE_SPACE(8 + len);
 792         WRITE32(OP_LOOKUP);
 793         WRITE32(len);
 794         WRITEMEM(name->name, len);
 795
 796         return 0;
 797 }
 798
 799 static void encode_share_access(struct xdr_stream *xdr, int open_flags)
 800 {
 801         uint32_t *p;
 802
 803         RESERVE_SPACE(8);
 804         switch (open_flags & (FMODE_READ|FMODE_WRITE)) {
 805                 case FMODE_READ:
 806                         WRITE32(NFS4_SHARE_ACCESS_READ);
 807                         break;
 808                 case FMODE_WRITE:
 809                         WRITE32(NFS4_SHARE_ACCESS_WRITE);
 810                         break;
 811                 case FMODE_READ|FMODE_WRITE:
 812                         WRITE32(NFS4_SHARE_ACCESS_BOTH);
 813                         break;
 814                 default:
 815                         BUG();
 816         }
 817         WRITE32(0);             /* for linux, share_deny = 0 always */
 818 }
 819
 820 static inline void encode_openhdr(struct xdr_stream *xdr, const struct nfs_openargs *arg)
 821 {
 822         uint32_t *p;
 823  /*
 824  * opcode 4, seqid 4, share_access 4, share_deny 4, clientid 8, ownerlen 4,
 825  * owner 4 = 32
 826  */
 827         RESERVE_SPACE(8);
 828         WRITE32(OP_OPEN);
 829         WRITE32(arg->seqid->sequence->counter);
 830         encode_share_access(xdr, arg->open_flags);
 831         RESERVE_SPACE(16);
 832         WRITE64(arg->clientid);
 833         WRITE32(4);
 834         WRITE32(arg->id);
 835 }
 836
 837 static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_openargs *arg)
 838 {
 839         uint32_t *p;
 840
 841         RESERVE_SPACE(4);
 842         switch(arg->open_flags & O_EXCL) {
 843                 case 0:
 844                         WRITE32(NFS4_CREATE_UNCHECKED);
 845                         encode_attrs(xdr, arg->u.attrs, arg->server);
 846                         break;
 847                 default:
 848                         WRITE32(NFS4_CREATE_EXCLUSIVE);
 849                         encode_nfs4_verifier(xdr, &arg->u.verifier);
 850         }
 851 }
 852
 853 static void encode_opentype(struct xdr_stream *xdr, const struct nfs_openargs *arg)
 854 {
 855         uint32_t *p;
 856
 857         RESERVE_SPACE(4);
 858         switch (arg->open_flags & O_CREAT) {
 859                 case 0:
 860                         WRITE32(NFS4_OPEN_NOCREATE);
 861                         break;
 862                 default:
 863                         BUG_ON(arg->claim != NFS4_OPEN_CLAIM_NULL);
 864                         WRITE32(NFS4_OPEN_CREATE);
 865                         encode_createmode(xdr, arg);
 866         }
 867 }
 868
 869 static inline void encode_delegation_type(struct xdr_stream *xdr, int delegation_type)
 870 {
 871         uint32_t *p;
 872
 873         RESERVE_SPACE(4);
 874         switch (delegation_type) {
 875                 case 0:
 876                         WRITE32(NFS4_OPEN_DELEGATE_NONE);
 877                         break;
 878                 case FMODE_READ:
 879                         WRITE32(NFS4_OPEN_DELEGATE_READ);
 880                         break;
 881                 case FMODE_WRITE|FMODE_READ:
 882                         WRITE32(NFS4_OPEN_DELEGATE_WRITE);
 883                         break;
 884                 default:
 885                         BUG();
 886         }
 887 }
 888
 889 static inline void encode_claim_null(struct xdr_stream *xdr, const struct qstr *name)
 890 {
 891         uint32_t *p;
 892
 893         RESERVE_SPACE(4);
 894         WRITE32(NFS4_OPEN_CLAIM_NULL);
 895         encode_string(xdr, name->len, name->name);
 896 }
 897
 898 static inline void encode_claim_previous(struct xdr_stream *xdr, int type)
 899 {
 900         uint32_t *p;
 901
 902         RESERVE_SPACE(4);
 903         WRITE32(NFS4_OPEN_CLAIM_PREVIOUS);
 904         encode_delegation_type(xdr, type);
 905 }
 906
 907 static inline void encode_claim_delegate_cur(struct xdr_stream *xdr, const struct qstr *name, const nfs4_stateid *stateid)
 908 {
 909         uint32_t *p;
 910
 911         RESERVE_SPACE(4+sizeof(stateid->data));
 912         WRITE32(NFS4_OPEN_CLAIM_DELEGATE_CUR);
 913         WRITEMEM(stateid->data, sizeof(stateid->data));
 914         encode_string(xdr, name->len, name->name);
 915 }
 916
 917 static int encode_open(struct xdr_stream *xdr, const struct nfs_openargs *arg)
 918 {
 919         encode_openhdr(xdr, arg);
 920         encode_opentype(xdr, arg);
 921         switch (arg->claim) {
 922                 case NFS4_OPEN_CLAIM_NULL:
 923                         encode_claim_null(xdr, arg->name);
 924                         break;
 925                 case NFS4_OPEN_CLAIM_PREVIOUS:
 926                         encode_claim_previous(xdr, arg->u.delegation_type);
 927                         break;
 928                 case NFS4_OPEN_CLAIM_DELEGATE_CUR:
 929                         encode_claim_delegate_cur(xdr, arg->name, &arg->u.delegation);
 930                         break;
 931                 default:
 932                         BUG();
 933         }
 934         return 0;
 935 }
 936
 937 static int encode_open_confirm(struct xdr_stream *xdr, const struct nfs_open_confirmargs *arg)
 938 {
 939         uint32_t *p;
 940
 941         RESERVE_SPACE(8+sizeof(arg->stateid.data));
 942         WRITE32(OP_OPEN_CONFIRM);
 943         WRITEMEM(arg->stateid.data, sizeof(arg->stateid.data));
 944         WRITE32(arg->seqid->sequence->counter);
 945
 946         return 0;
 947 }
 948
 949 static int encode_open_downgrade(struct xdr_stream *xdr, const struct nfs_closeargs *arg)
 950 {
 951         uint32_t *p;
 952
 953         RESERVE_SPACE(8+sizeof(arg->stateid->data));
 954         WRITE32(OP_OPEN_DOWNGRADE);
 955         WRITEMEM(arg->stateid->data, sizeof(arg->stateid->data));
 956         WRITE32(arg->seqid->sequence->counter);
 957         encode_share_access(xdr, arg->open_flags);
 958         return 0;
 959 }
 960
 961 static int
 962 encode_putfh(struct xdr_stream *xdr, const struct nfs_fh *fh)
 963 {
 964         int len = fh->size;
 965         uint32_t *p;
 966
 967         RESERVE_SPACE(8 + len);
 968         WRITE32(OP_PUTFH);
 969         WRITE32(len);
 970         WRITEMEM(fh->data, len);
 971
 972         return 0;
 973 }
 974
 975 static int encode_putrootfh(struct xdr_stream *xdr)
 976 {
 977         uint32_t *p;
 978
 979         RESERVE_SPACE(4);
 980         WRITE32(OP_PUTROOTFH);
 981
 982         return 0;
 983 }
 984
 985 static void encode_stateid(struct xdr_stream *xdr, const struct nfs_open_context *ctx)
 986 {
 987         nfs4_stateid stateid;
 988         uint32_t *p;
 989
 990         RESERVE_SPACE(16);
 991         if (ctx->state != NULL) {
 992                 nfs4_copy_stateid(&stateid, ctx->state, ctx->lockowner);
 993                 WRITEMEM(stateid.data, sizeof(stateid.data));
 994         } else
 995                 WRITEMEM(zero_stateid.data, sizeof(zero_stateid.data));
 996 }
 997
 998 static int encode_read(struct xdr_stream *xdr, const struct nfs_readargs *args)
 999 {
1000         uint32_t *p;
1001
1002         RESERVE_SPACE(4);
1003         WRITE32(OP_READ);
1004
1005         encode_stateid(xdr, args->context);
1006
1007         RESERVE_SPACE(12);
1008         WRITE64(args->offset);
1009         WRITE32(args->count);
1010
1011         return 0;
1012 }
1013
1014 static int encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg *readdir, struct rpc_rqst *req)
1015 {
1016         struct rpc_auth *auth = req->rq_task->tk_auth;
1017         uint32_t attrs[2] = {
1018                 FATTR4_WORD0_RDATTR_ERROR|FATTR4_WORD0_FILEID,
1019                 FATTR4_WORD1_MOUNTED_ON_FILEID,
1020         };
1021         int replen;
1022         uint32_t *p;
1023
1024         RESERVE_SPACE(32+sizeof(nfs4_verifier));
1025         WRITE32(OP_READDIR);
1026         WRITE64(readdir->cookie);
1027         WRITEMEM(readdir->verifier.data, sizeof(readdir->verifier.data));
1028         WRITE32(readdir->count >> 1);  /* We're not doing readdirplus */
1029         WRITE32(readdir->count);
1030         WRITE32(2);
1031         /* Switch to mounted_on_fileid if the server supports it */
1032         if (readdir->bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)
1033                 attrs[0] &= ~FATTR4_WORD0_FILEID;
1034         else
1035                 attrs[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
1036         WRITE32(attrs[0] & readdir->bitmask[0]);
1037         WRITE32(attrs[1] & readdir->bitmask[1]);
1038         dprintk("%s: cookie = %Lu, verifier = 0x%x%x, bitmap = 0x%x%x\n",
1039                         __FUNCTION__,
1040                         (unsigned long long)readdir->cookie,
1041                         ((u32 *)readdir->verifier.data)[0],
1042                         ((u32 *)readdir->verifier.data)[1],
1043                         attrs[0] & readdir->bitmask[0],
1044                         attrs[1] & readdir->bitmask[1]);
1045
1046         /* set up reply kvec
1047          *    toplevel_status + taglen + rescount + OP_PUTFH + status
1048          *      + OP_READDIR + status + verifer(2)  = 9
1049          */
1050         replen = (RPC_REPHDRSIZE + auth->au_rslack + 9) << 2;
1051         xdr_inline_pages(&req->rq_rcv_buf, replen, readdir->pages,
1052                          readdir->pgbase, readdir->count);
1053         dprintk("%s: inlined page args = (%u, %p, %u, %u)\n",
1054                         __FUNCTION__, replen, readdir->pages,
1055                         readdir->pgbase, readdir->count);
1056
1057         return 0;
1058 }
1059
1060 static int encode_readlink(struct xdr_stream *xdr, const struct nfs4_readlink *readlink, struct rpc_rqst *req)
1061 {
1062         struct rpc_auth *auth = req->rq_task->tk_auth;
1063         unsigned int replen;
1064         uint32_t *p;
1065
1066         RESERVE_SPACE(4);
1067         WRITE32(OP_READLINK);
1068
1069         /* set up reply kvec
1070          *    toplevel_status + taglen + rescount + OP_PUTFH + status
1071          *      + OP_READLINK + status + string length = 8
1072          */
1073         replen = (RPC_REPHDRSIZE + auth->au_rslack + 8) << 2;
1074         xdr_inline_pages(&req->rq_rcv_buf, replen, readlink->pages,
1075                         readlink->pgbase, readlink->pglen);
1076
1077         return 0;
1078 }
1079
1080 static int encode_remove(struct xdr_stream *xdr, const struct qstr *name)
1081 {
1082         uint32_t *p;
1083
1084         RESERVE_SPACE(8 + name->len);
1085         WRITE32(OP_REMOVE);
1086         WRITE32(name->len);
1087         WRITEMEM(name->name, name->len);
1088
1089         return 0;
1090 }
1091
1092 static int encode_rename(struct xdr_stream *xdr, const struct qstr *oldname, const struct qstr *newname)
1093 {
1094         uint32_t *p;
1095
1096         RESERVE_SPACE(8 + oldname->len);
1097         WRITE32(OP_RENAME);
1098         WRITE32(oldname->len);
1099         WRITEMEM(oldname->name, oldname->len);
1100
1101         RESERVE_SPACE(4 + newname->len);
1102         WRITE32(newname->len);
1103         WRITEMEM(newname->name, newname->len);
1104
1105         return 0;
1106 }
1107
1108 static int encode_renew(struct xdr_stream *xdr, const struct nfs4_client *client_stateid)
1109 {
1110         uint32_t *p;
1111
1112         RESERVE_SPACE(12);
1113         WRITE32(OP_RENEW);
1114         WRITE64(client_stateid->cl_clientid);
1115
1116         return 0;
1117 }
1118
1119 static int
1120 encode_setacl(struct xdr_stream *xdr, struct nfs_setaclargs *arg)
1121 {
1122         uint32_t *p;
1123
1124         RESERVE_SPACE(4+sizeof(zero_stateid.data));
1125         WRITE32(OP_SETATTR);
1126         WRITEMEM(zero_stateid.data, sizeof(zero_stateid.data));
1127         RESERVE_SPACE(2*4);
1128         WRITE32(1);
1129         WRITE32(FATTR4_WORD0_ACL);
1130         if (arg->acl_len % 4)
1131                 return -EINVAL;
1132         RESERVE_SPACE(4);
1133         WRITE32(arg->acl_len);
1134         xdr_write_pages(xdr, arg->acl_pages, arg->acl_pgbase, arg->acl_len);
1135         return 0;
1136 }
1137
1138 static int
1139 encode_savefh(struct xdr_stream *xdr)
1140 {
1141         uint32_t *p;
1142
1143         RESERVE_SPACE(4);
1144         WRITE32(OP_SAVEFH);
1145
1146         return 0;
1147 }
1148
1149 static int encode_setattr(struct xdr_stream *xdr, const struct nfs_setattrargs *arg, const struct nfs_server *server)
1150 {
1151         int status;
1152         uint32_t *p;
1153
1154         RESERVE_SPACE(4+sizeof(arg->stateid.data));
1155         WRITE32(OP_SETATTR);
1156         WRITEMEM(arg->stateid.data, sizeof(arg->stateid.data));
1157
1158         if ((status = encode_attrs(xdr, arg->iap, server)))
1159                 return status;
1160
1161         return 0;
1162 }
1163
1164 static int encode_setclientid(struct xdr_stream *xdr, const struct nfs4_setclientid *setclientid)
1165 {
1166         uint32_t *p;
1167
1168         RESERVE_SPACE(4 + sizeof(setclientid->sc_verifier->data));
1169         WRITE32(OP_SETCLIENTID);
1170         WRITEMEM(setclientid->sc_verifier->data, sizeof(setclientid->sc_verifier->data));
1171
1172         encode_string(xdr, setclientid->sc_name_len, setclientid->sc_name);
1173         RESERVE_SPACE(4);
1174         WRITE32(setclientid->sc_prog);
1175         encode_string(xdr, setclientid->sc_netid_len, setclientid->sc_netid);
1176         encode_string(xdr, setclientid->sc_uaddr_len, setclientid->sc_uaddr);
1177         RESERVE_SPACE(4);
1178         WRITE32(setclientid->sc_cb_ident);
1179
1180         return 0;
1181 }
1182
1183 static int encode_setclientid_confirm(struct xdr_stream *xdr, const struct nfs4_client *client_state)
1184 {
1185         uint32_t *p;
1186
1187         RESERVE_SPACE(12 + sizeof(client_state->cl_confirm.data));
1188         WRITE32(OP_SETCLIENTID_CONFIRM);
1189         WRITE64(client_state->cl_clientid);
1190         WRITEMEM(client_state->cl_confirm.data, sizeof(client_state->cl_confirm.data));
1191
1192         return 0;
1193 }
1194
1195 static int encode_write(struct xdr_stream *xdr, const struct nfs_writeargs *args)
1196 {
1197         uint32_t *p;
1198
1199         RESERVE_SPACE(4);
1200         WRITE32(OP_WRITE);
1201
1202         encode_stateid(xdr, args->context);
1203
1204         RESERVE_SPACE(16);
1205         WRITE64(args->offset);
1206         WRITE32(args->stable);
1207         WRITE32(args->count);
1208
1209         xdr_write_pages(xdr, args->pages, args->pgbase, args->count);
1210
1211         return 0;
1212 }
1213
1214 static int encode_delegreturn(struct xdr_stream *xdr, const nfs4_stateid *stateid)
1215 {
1216         uint32_t *p;
1217
1218         RESERVE_SPACE(20);
1219
1220         WRITE32(OP_DELEGRETURN);
1221         WRITEMEM(stateid->data, sizeof(stateid->data));
1222         return 0;
1223
1224 }
1225 /*
1226  * END OF "GENERIC" ENCODE ROUTINES.
1227  */
1228
1229 /*
1230  * Encode an ACCESS request
1231  */
1232 static int nfs4_xdr_enc_access(struct rpc_rqst *req, uint32_t *p, const struct nfs4_accessargs *args)
1233 {
1234         struct xdr_stream xdr;
1235         struct compound_hdr hdr = {
1236                 .nops = 2,
1237         };
1238         int status;
1239
1240         xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1241         encode_compound_hdr(&xdr, &hdr);
1242         if ((status = encode_putfh(&xdr, args->fh)) == 0)
1243                 status = encode_access(&xdr, args->access);
1244         return status;
1245 }
1246
1247 /*
1248  * Encode LOOKUP request
1249  */
1250 static int nfs4_xdr_enc_lookup(struct rpc_rqst *req, uint32_t *p, const struct nfs4_lookup_arg *args)
1251 {
1252         struct xdr_stream xdr;
1253         struct compound_hdr hdr = {
1254                 .nops = 4,
1255         };
1256         int status;
1257
1258         xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1259         encode_compound_hdr(&xdr, &hdr);
1260         if ((status = encode_putfh(&xdr, args->dir_fh)) != 0)
1261                 goto out;
1262         if ((status = encode_lookup(&xdr, args->name)) != 0)
1263                 goto out;
1264         if ((status = encode_getfh(&xdr)) != 0)
1265                 goto out;
1266         status = encode_getfattr(&xdr, args->bitmask);
1267 out:
1268         return status;
1269 }
1270
1271 /*
1272  * Encode LOOKUP_ROOT request
1273  */
1274 static int nfs4_xdr_enc_lookup_root(struct rpc_rqst *req, uint32_t *p, const struct nfs4_lookup_root_arg *args)
1275 {
1276         struct xdr_stream xdr;
1277         struct compound_hdr hdr = {
1278                 .nops = 3,
1279         };
1280         int status;
1281
1282         xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1283         encode_compound_hdr(&xdr, &hdr);
1284         if ((status = encode_putrootfh(&xdr)) != 0)
1285                 goto out;
1286         if ((status = encode_getfh(&xdr)) == 0)
1287                 status = encode_getfattr(&xdr, args->bitmask);
1288 out:
1289         return status;
1290 }
1291
1292 /*
1293  * Encode REMOVE request
1294  */
1295 static int nfs4_xdr_enc_remove(struct rpc_rqst *req, uint32_t *p, const struct nfs4_remove_arg *args)
1296 {
1297         struct xdr_stream xdr;
1298         struct compound_hdr hdr = {
1299                 .nops = 2,
1300         };
1301         int status;
1302
1303         xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1304         encode_compound_hdr(&xdr, &hdr);
1305         if ((status = encode_putfh(&xdr, args->fh)) == 0)
1306                 status = encode_remove(&xdr, args->name);
1307         return status;
1308 }
1309
1310 /*
1311  * Encode RENAME request
1312  */
1313 static int nfs4_xdr_enc_rename(struct rpc_rqst *req, uint32_t *p, const struct nfs4_rename_arg *args)
1314 {
1315         struct xdr_stream xdr;
1316         struct compound_hdr hdr = {
1317                 .nops = 4,
1318         };
1319         int status;
1320
1321         xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1322         encode_compound_hdr(&xdr, &hdr);
1323         if ((status = encode_putfh(&xdr, args->old_dir)) != 0)
1324                 goto out;
1325         if ((status = encode_savefh(&xdr)) != 0)
1326                 goto out;
1327         if ((status = encode_putfh(&xdr, args->new_dir)) != 0)
1328                 goto out;
1329         status = encode_rename(&xdr, args->old_name, args->new_name);
1330 out:
1331         return status;
1332 }
1333
1334 /*
1335  * Encode LINK request
1336  */
1337 static int nfs4_xdr_enc_link(struct rpc_rqst *req, uint32_t *p, const struct nfs4_link_arg *args)
1338 {
1339         struct xdr_stream xdr;
1340         struct compound_hdr hdr = {
1341                 .nops = 4,
1342         };
1343         int status;
1344
1345         xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1346         encode_compound_hdr(&xdr, &hdr);
1347         if ((status = encode_putfh(&xdr, args->fh)) != 0)
1348                 goto out;
1349         if ((status = encode_savefh(&xdr)) != 0)
1350                 goto out;
1351         if ((status = encode_putfh(&xdr, args->dir_fh)) != 0)
1352                 goto out;
1353         status = encode_link(&xdr, args->name);
1354 out:
1355         return status;
1356 }
1357
1358 /*
1359  * Encode CREATE request
1360  */
1361 static int nfs4_xdr_enc_create(struct rpc_rqst *req, uint32_t *p, const struct nfs4_create_arg *args)
1362 {
1363         struct xdr_stream xdr;
1364         struct compound_hdr hdr = {
1365                 .nops = 4,
1366         };
1367         int status;
1368
1369         xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1370         encode_compound_hdr(&xdr, &hdr);
1371         if ((status = encode_putfh(&xdr, args->dir_fh)) != 0)
1372                 goto out;
1373         if ((status = encode_create(&xdr, args)) != 0)
1374                 goto out;
1375         if ((status = encode_getfh(&xdr)) != 0)
1376                 goto out;
1377         status = encode_getfattr(&xdr, args->bitmask);
1378 out:
1379         return status;
1380 }
1381
1382 /*
1383  * Encode SYMLINK request
1384  */
1385 static int nfs4_xdr_enc_symlink(struct rpc_rqst *req, uint32_t *p, const struct nfs4_create_arg *args)
1386 {
1387         return nfs4_xdr_enc_create(req, p, args);
1388 }
1389
1390 /*
1391  * Encode GETATTR request
1392  */
1393 static int nfs4_xdr_enc_getattr(struct rpc_rqst *req, uint32_t *p, const struct nfs4_getattr_arg *args)
1394 {
1395         struct xdr_stream xdr;
1396         struct compound_hdr hdr = {
1397                 .nops = 2,
1398         };
1399         int status;
1400
1401         xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1402         encode_compound_hdr(&xdr, &hdr);
1403         if ((status = encode_putfh(&xdr, args->fh)) == 0)
1404                 status = encode_getfattr(&xdr, args->bitmask);
1405         return status;
1406 }
1407
1408 /*
1409  * Encode a CLOSE request
1410  */
1411 static int nfs4_xdr_enc_close(struct rpc_rqst *req, uint32_t *p, struct nfs_closeargs *args)
1412 {
1413         struct xdr_stream xdr;
1414         struct compound_hdr hdr = {
1415                 .nops   = 2,
1416         };
1417         int status;
1418
1419         xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1420         encode_compound_hdr(&xdr, &hdr);
1421         status = encode_putfh(&xdr, args->fh);
1422         if(status)
1423                 goto out;
1424         status = encode_close(&xdr, args);
1425 out:
1426         return status;
1427 }
1428
1429 /*
1430  * Encode an OPEN request
1431  */
1432 static int nfs4_xdr_enc_open(struct rpc_rqst *req, uint32_t *p, struct nfs_openargs *args)
1433 {
1434         struct xdr_stream xdr;
1435         struct compound_hdr hdr = {
1436                 .nops = 4,
1437         };
1438         int status;
1439
1440         status = nfs_wait_on_sequence(args->seqid, req->rq_task);
1441         if (status != 0)
1442                 goto out;
1443         xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1444         encode_compound_hdr(&xdr, &hdr);
1445         status = encode_putfh(&xdr, args->fh);
1446         if (status)
1447                 goto out;
1448         status = encode_open(&xdr, args);
1449         if (status)
1450                 goto out;
1451         status = encode_getfh(&xdr);
1452         if (status)
1453                 goto out;
1454         status = encode_getfattr(&xdr, args->bitmask);
1455 out:
1456         return status;
1457 }
1458
1459 /*
1460  * Encode an OPEN_CONFIRM request
1461  */
1462 static int nfs4_xdr_enc_open_confirm(struct rpc_rqst *req, uint32_t *p, struct nfs_open_confirmargs *args)
1463 {
1464         struct xdr_stream xdr;
1465         struct compound_hdr hdr = {
1466                 .nops   = 2,
1467         };
1468         int status;
1469
1470         status = nfs_wait_on_sequence(args->seqid, req->rq_task);
1471         if (status != 0)
1472                 goto out;
1473         xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1474         encode_compound_hdr(&xdr, &hdr);
1475         status = encode_putfh(&xdr, args->fh);
1476         if(status)
1477                 goto out;
1478         status = encode_open_confirm(&xdr, args);
1479 out:
1480         return status;
1481 }
1482
1483 /*
1484  * Encode an OPEN request with no attributes.
1485  */
1486 static int nfs4_xdr_enc_open_noattr(struct rpc_rqst *req, uint32_t *p, struct nfs_openargs *args)
1487 {
1488         struct xdr_stream xdr;
1489         struct compound_hdr hdr = {
1490                 .nops   = 2,
1491         };
1492         int status;
1493
1494         status = nfs_wait_on_sequence(args->seqid, req->rq_task);
1495         if (status != 0)
1496                 goto out;
1497         xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1498         encode_compound_hdr(&xdr, &hdr);
1499         status = encode_putfh(&xdr, args->fh);
1500         if (status)
1501                 goto out;
1502         status = encode_open(&xdr, args);
1503 out:
1504         return status;
1505 }
1506
1507 /*
1508  * Encode an OPEN_DOWNGRADE request
1509  */
1510 static int nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req, uint32_t *p, struct nfs_closeargs *args)
1511 {
1512         struct xdr_stream xdr;
1513         struct compound_hdr hdr = {
1514                 .nops   = 2,
1515         };
1516         int status;
1517
1518         xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1519         encode_compound_hdr(&xdr, &hdr);
1520         status = encode_putfh(&xdr, args->fh);
1521         if (status)
1522                 goto out;
1523         status = encode_open_downgrade(&xdr, args);
1524 out:
1525         return status;
1526 }
1527
1528 /*
1529  * Encode a LOCK request
1530  */
1531 static int nfs4_xdr_enc_lock(struct rpc_rqst *req, uint32_t *p, struct nfs_lockargs *args)
1532 {
1533         struct xdr_stream xdr;
1534         struct compound_hdr hdr = {
1535                 .nops   = 2,
1536         };
1537         struct nfs_lock_opargs *opargs = args->u.lock;
1538         struct nfs_seqid *seqid;
1539         int status;
1540
1541         if (opargs->new_lock_owner)
1542                 seqid = opargs->u.open_lock->lock_seqid;
1543         else
1544                 seqid = opargs->u.exist_lock->seqid;
1545         status = nfs_wait_on_sequence(seqid, req->rq_task);
1546         if (status != 0)
1547                 goto out;
1548         xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1549         encode_compound_hdr(&xdr, &hdr);
1550         status = encode_putfh(&xdr, args->fh);
1551         if(status)
1552                 goto out;
1553         status = encode_lock(&xdr, args);
1554 out:
1555         return status;
1556 }
1557
1558 /*
1559  * Encode a LOCKT request
1560  */
1561 static int nfs4_xdr_enc_lockt(struct rpc_rqst *req, uint32_t *p, struct nfs_lockargs *args)
1562 {
1563         struct xdr_stream xdr;
1564         struct compound_hdr hdr = {
1565                 .nops   = 2,
1566         };
1567         int status;
1568
1569         xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1570         encode_compound_hdr(&xdr, &hdr);
1571         status = encode_putfh(&xdr, args->fh);
1572         if(status)
1573                 goto out;
1574         status = encode_lockt(&xdr, args);
1575 out:
1576         return status;
1577 }
1578
1579 /*
1580  * Encode a LOCKU request
1581  */
1582 static int nfs4_xdr_enc_locku(struct rpc_rqst *req, uint32_t *p, struct nfs_lockargs *args)
1583 {
1584         struct xdr_stream xdr;
1585         struct compound_hdr hdr = {
1586                 .nops   = 2,
1587         };
1588         int status;
1589
1590         xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1591         encode_compound_hdr(&xdr, &hdr);
1592         status = encode_putfh(&xdr, args->fh);
1593         if(status)
1594                 goto out;
1595         status = encode_locku(&xdr, args);
1596 out:
1597         return status;
1598 }
1599
1600 /*
1601  * Encode a READLINK request
1602  */
1603 static int nfs4_xdr_enc_readlink(struct rpc_rqst *req, uint32_t *p, const struct nfs4_readlink *args)
1604 {
1605         struct xdr_stream xdr;
1606         struct compound_hdr hdr = {
1607                 .nops = 2,
1608         };
1609         int status;
1610
1611         xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1612         encode_compound_hdr(&xdr, &hdr);
1613         status = encode_putfh(&xdr, args->fh);
1614         if(status)
1615                 goto out;
1616         status = encode_readlink(&xdr, args, req);
1617 out:
1618         return status;
1619 }
1620
1621 /*
1622  * Encode a READDIR request
1623  */
1624 static int nfs4_xdr_enc_readdir(struct rpc_rqst *req, uint32_t *p, const struct nfs4_readdir_arg *args)
1625 {
1626         struct xdr_stream xdr;
1627         struct compound_hdr hdr = {
1628                 .nops = 2,
1629         };
1630         int status;
1631
1632         xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1633         encode_compound_hdr(&xdr, &hdr);
1634         status = encode_putfh(&xdr, args->fh);
1635         if(status)
1636                 goto out;
1637         status = encode_readdir(&xdr, args, req);
1638 out:
1639         return status;
1640 }
1641
1642 /*
1643  * Encode a READ request
1644  */
1645 static int nfs4_xdr_enc_read(struct rpc_rqst *req, uint32_t *p, struct nfs_readargs *args)
1646 {
1647         struct rpc_auth *auth = req->rq_task->tk_auth;
1648         struct xdr_stream xdr;
1649         struct compound_hdr hdr = {
1650                 .nops = 2,
1651         };
1652         int replen, status;
1653
1654         xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1655         encode_compound_hdr(&xdr, &hdr);
1656         status = encode_putfh(&xdr, args->fh);
1657         if (status)
1658                 goto out;
1659         status = encode_read(&xdr, args);
1660         if (status)
1661                 goto out;
1662
1663         /* set up reply kvec
1664          *    toplevel status + taglen=0 + rescount + OP_PUTFH + status
1665          *       + OP_READ + status + eof + datalen = 9
1666          */
1667         replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS4_dec_read_sz) << 2;
1668         xdr_inline_pages(&req->rq_rcv_buf, replen,
1669                          args->pages, args->pgbase, args->count);
1670 out:
1671         return status;
1672 }
1673
1674 /*
1675  * Encode an SETATTR request
1676  */
1677 static int nfs4_xdr_enc_setattr(struct rpc_rqst *req, uint32_t *p, struct nfs_setattrargs *args)
1678
1679 {
1680         struct xdr_stream xdr;
1681         struct compound_hdr hdr = {
1682                 .nops   = 3,
1683         };
1684         int status;
1685
1686         xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1687         encode_compound_hdr(&xdr, &hdr);
1688         status = encode_putfh(&xdr, args->fh);
1689         if(status)
1690                 goto out;
1691         status = encode_setattr(&xdr, args, args->server);
1692         if(status)
1693                 goto out;
1694         status = encode_getfattr(&xdr, args->bitmask);
1695 out:
1696         return status;
1697 }
1698
1699 /*
1700  * Encode a GETACL request
1701  */
1702 static int
1703 nfs4_xdr_enc_getacl(struct rpc_rqst *req, uint32_t *p,
1704                 struct nfs_getaclargs *args)
1705 {
1706         struct xdr_stream xdr;
1707         struct rpc_auth *auth = req->rq_task->tk_auth;
1708         struct compound_hdr hdr = {
1709                 .nops   = 2,
1710         };
1711         int replen, status;
1712
1713         xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1714         encode_compound_hdr(&xdr, &hdr);
1715         status = encode_putfh(&xdr, args->fh);
1716         if (status)
1717                 goto out;
1718         status = encode_getattr_two(&xdr, FATTR4_WORD0_ACL, 0);
1719         /* set up reply buffer: */
1720         replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS4_dec_getacl_sz) << 2;
1721         xdr_inline_pages(&req->rq_rcv_buf, replen,
1722                 args->acl_pages, args->acl_pgbase, args->acl_len);
1723 out:
1724         return status;
1725 }
1726
1727 /*
1728  * Encode a WRITE request
1729  */
1730 static int nfs4_xdr_enc_write(struct rpc_rqst *req, uint32_t *p, struct nfs_writeargs *args)
1731 {
1732         struct xdr_stream xdr;
1733         struct compound_hdr hdr = {
1734                 .nops = 2,
1735         };
1736         int status;
1737
1738         xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1739         encode_compound_hdr(&xdr, &hdr);
1740         status = encode_putfh(&xdr, args->fh);
1741         if (status)
1742                 goto out;
1743         status = encode_write(&xdr, args);
1744 out:
1745         return status;
1746 }
1747
1748 /*
1749  *  a COMMIT request
1750  */
1751 static int nfs4_xdr_enc_commit(struct rpc_rqst *req, uint32_t *p, struct nfs_writeargs *args)
1752 {
1753         struct xdr_stream xdr;
1754         struct compound_hdr hdr = {
1755                 .nops = 2,
1756         };
1757         int status;
1758
1759         xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1760         encode_compound_hdr(&xdr, &hdr);
1761         status = encode_putfh(&xdr, args->fh);
1762         if (status)
1763                 goto out;
1764         status = encode_commit(&xdr, args);
1765 out:
1766         return status;
1767 }
1768
1769 /*
1770  * FSINFO request
1771  */
1772 static int nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, uint32_t *p, struct nfs4_fsinfo_arg *args)
1773 {
1774         struct xdr_stream xdr;
1775         struct compound_hdr hdr = {
1776                 .nops   = 2,
1777         };
1778         int status;
1779
1780         xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1781         encode_compound_hdr(&xdr, &hdr);
1782         status = encode_putfh(&xdr, args->fh);
1783         if (!status)
1784                 status = encode_fsinfo(&xdr, args->bitmask);
1785         return status;
1786 }
1787
1788 /*
1789  * a PATHCONF request
1790  */
1791 static int nfs4_xdr_enc_pathconf(struct rpc_rqst *req, uint32_t *p, const struct nfs4_pathconf_arg *args)
1792 {
1793         struct xdr_stream xdr;
1794         struct compound_hdr hdr = {
1795                 .nops = 2,
1796         };
1797         int status;
1798
1799         xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1800         encode_compound_hdr(&xdr, &hdr);
1801         status = encode_putfh(&xdr, args->fh);
1802         if (!status)
1803                 status = encode_getattr_one(&xdr,
1804                                 args->bitmask[0] & nfs4_pathconf_bitmap[0]);
1805         return status;
1806 }
1807
1808 /*
1809  * a STATFS request
1810  */
1811 static int nfs4_xdr_enc_statfs(struct rpc_rqst *req, uint32_t *p, const struct nfs4_statfs_arg *args)
1812 {
1813         struct xdr_stream xdr;
1814         struct compound_hdr hdr = {
1815                 .nops = 2,
1816         };
1817         int status;
1818
1819         xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1820         encode_compound_hdr(&xdr, &hdr);
1821         status = encode_putfh(&xdr, args->fh);
1822         if (status == 0)
1823                 status = encode_getattr_two(&xdr,
1824                                 args->bitmask[0] & nfs4_statfs_bitmap[0],
1825                                 args->bitmask[1] & nfs4_statfs_bitmap[1]);
1826         return status;
1827 }
1828
1829 /*
1830  * GETATTR_BITMAP request
1831  */
1832 static int nfs4_xdr_enc_server_caps(struct rpc_rqst *req, uint32_t *p, const struct nfs_fh *fhandle)
1833 {
1834         struct xdr_stream xdr;
1835         struct compound_hdr hdr = {
1836                 .nops = 2,
1837         };
1838         int status;
1839
1840         xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1841         encode_compound_hdr(&xdr, &hdr);
1842         status = encode_putfh(&xdr, fhandle);
1843         if (status == 0)
1844                 status = encode_getattr_one(&xdr, FATTR4_WORD0_SUPPORTED_ATTRS|
1845                                 FATTR4_WORD0_LINK_SUPPORT|
1846                                 FATTR4_WORD0_SYMLINK_SUPPORT|
1847                                 FATTR4_WORD0_ACLSUPPORT);
1848         return status;
1849 }
1850
1851 /*
1852  * a RENEW request
1853  */
1854 static int nfs4_xdr_enc_renew(struct rpc_rqst *req, uint32_t *p, struct nfs4_client *clp)
1855 {
1856         struct xdr_stream xdr;
1857         struct compound_hdr hdr = {
1858                 .nops   = 1,
1859         };
1860
1861         xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1862         encode_compound_hdr(&xdr, &hdr);
1863         return encode_renew(&xdr, clp);
1864 }
1865
1866 /*
1867  * a SETCLIENTID request
1868  */
1869 static int nfs4_xdr_enc_setclientid(struct rpc_rqst *req, uint32_t *p, struct nfs4_setclientid *sc)
1870 {
1871         struct xdr_stream xdr;
1872         struct compound_hdr hdr = {
1873                 .nops   = 1,
1874         };
1875
1876         xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1877         encode_compound_hdr(&xdr, &hdr);
1878         return encode_setclientid(&xdr, sc);
1879 }
1880
1881 /*
1882  * a SETCLIENTID_CONFIRM request
1883  */
1884 static int nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req, uint32_t *p, struct nfs4_client *clp)
1885 {
1886         struct xdr_stream xdr;
1887         struct compound_hdr hdr = {
1888                 .nops   = 3,
1889         };
1890         const u32 lease_bitmap[2] = { FATTR4_WORD0_LEASE_TIME, 0 };
1891         int status;
1892
1893         xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1894         encode_compound_hdr(&xdr, &hdr);
1895         status = encode_setclientid_confirm(&xdr, clp);
1896         if (!status)
1897                 status = encode_putrootfh(&xdr);
1898         if (!status)
1899                 status = encode_fsinfo(&xdr, lease_bitmap);
1900         return status;
1901 }
1902
1903 /*
1904  * DELEGRETURN request
1905  */
1906 static int nfs4_xdr_enc_delegreturn(struct rpc_rqst *req, uint32_t *p, const struct nfs4_delegreturnargs *args)
1907 {
1908         struct xdr_stream xdr;
1909         struct compound_hdr hdr = {
1910                 .nops = 2,
1911         };
1912         int status;
1913
1914         xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1915         encode_compound_hdr(&xdr, &hdr);
1916         if ((status = encode_putfh(&xdr, args->fhandle)) == 0)
1917                 status = encode_delegreturn(&xdr, args->stateid);
1918         return status;
1919 }
1920
1921 /*
1922  * START OF "GENERIC" DECODE ROUTINES.
1923  *   These may look a little ugly since they are imported from a "generic"
1924  * set of XDR encode/decode routines which are intended to be shared by
1925  * all of our NFSv4 implementations (OpenBSD, MacOS X...).
1926  *
1927  * If the pain of reading these is too great, it should be a straightforward
1928  * task to translate them into Linux-specific versions which are more
1929  * consistent with the style used in NFSv2/v3...
1930  */
1931 #define READ32(x)         (x) = ntohl(*p++)
1932 #define READ64(x)         do {                  \
1933         (x) = (u64)ntohl(*p++) << 32;           \
1934         (x) |= ntohl(*p++);                     \
1935 } while (0)
1936 #define READTIME(x)       do {                  \
1937         p++;                                    \
1938         (x.tv_sec) = ntohl(*p++);               \
1939         (x.tv_nsec) = ntohl(*p++);              \
1940 } while (0)
1941 #define COPYMEM(x,nbytes) do {                  \
1942         memcpy((x), p, nbytes);                 \
1943         p += XDR_QUADLEN(nbytes);               \
1944 } while (0)
1945
1946 #define READ_BUF(nbytes)  do { \
1947         p = xdr_inline_decode(xdr, nbytes); \
1948         if (!p) { \
1949                 printk(KERN_WARNING "%s: reply buffer overflowed in line %d.", \
1950                                 __FUNCTION__, __LINE__); \
1951                 return -EIO; \
1952         } \
1953 } while (0)
1954
1955 static int decode_opaque_inline(struct xdr_stream *xdr, uint32_t *len, char **string)
1956 {
1957         uint32_t *p;
1958
1959         READ_BUF(4);
1960         READ32(*len);
1961         READ_BUF(*len);
1962         *string = (char *)p;
1963         return 0;
1964 }
1965
1966 static int decode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr)
1967 {
1968         uint32_t *p;
1969
1970         READ_BUF(8);
1971         READ32(hdr->status);
1972         READ32(hdr->taglen);
1973
1974         READ_BUF(hdr->taglen + 4);
1975         hdr->tag = (char *)p;
1976         p += XDR_QUADLEN(hdr->taglen);
1977         READ32(hdr->nops);
1978         return 0;
1979 }
1980
1981 static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected)
1982 {
1983         uint32_t *p;
1984         uint32_t opnum;
1985         int32_t nfserr;
1986
1987         READ_BUF(8);
1988         READ32(opnum);
1989         if (opnum != expected) {
1990                 printk(KERN_NOTICE
1991                                 "nfs4_decode_op_hdr: Server returned operation"
1992                                 " %d but we issued a request for %d\n",
1993                                 opnum, expected);
1994                 return -EIO;
1995         }
1996         READ32(nfserr);
1997         if (nfserr != NFS_OK)
1998                 return -nfs_stat_to_errno(nfserr);
1999         return 0;
2000 }
2001
2002 /* Dummy routine */
2003 static int decode_ace(struct xdr_stream *xdr, void *ace, struct nfs4_client *clp)
2004 {
2005         uint32_t *p;
2006         uint32_t strlen;
2007         char *str;
2008
2009         READ_BUF(12);
2010         return decode_opaque_inline(xdr, &strlen, &str);
2011 }
2012
2013 static int decode_attr_bitmap(struct xdr_stream *xdr, uint32_t *bitmap)
2014 {
2015         uint32_t bmlen, *p;
2016
2017         READ_BUF(4);
2018         READ32(bmlen);
2019
2020         bitmap[0] = bitmap[1] = 0;
2021         READ_BUF((bmlen << 2));
2022         if (bmlen > 0) {
2023                 READ32(bitmap[0]);
2024                 if (bmlen > 1)
2025                         READ32(bitmap[1]);
2026         }
2027         return 0;
2028 }
2029
2030 static inline int decode_attr_length(struct xdr_stream *xdr, uint32_t *attrlen, uint32_t **savep)
2031 {
2032         uint32_t *p;
2033
2034         READ_BUF(4);
2035         READ32(*attrlen);
2036         *savep = xdr->p;
2037         return 0;
2038 }
2039
2040 static int decode_attr_supported(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *bitmask)
2041 {
2042         if (likely(bitmap[0] & FATTR4_WORD0_SUPPORTED_ATTRS)) {
2043                 decode_attr_bitmap(xdr, bitmask);
2044                 bitmap[0] &= ~FATTR4_WORD0_SUPPORTED_ATTRS;
2045         } else
2046                 bitmask[0] = bitmask[1] = 0;
2047         dprintk("%s: bitmask=0x%x%x\n", __FUNCTION__, bitmask[0], bitmask[1]);
2048         return 0;
2049 }
2050
2051 static int decode_attr_type(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *type)
2052 {
2053         uint32_t *p;
2054
2055         *type = 0;
2056         if (unlikely(bitmap[0] & (FATTR4_WORD0_TYPE - 1U)))
2057                 return -EIO;
2058         if (likely(bitmap[0] & FATTR4_WORD0_TYPE)) {
2059                 READ_BUF(4);
2060                 READ32(*type);
2061                 if (*type < NF4REG || *type > NF4NAMEDATTR) {
2062                         dprintk("%s: bad type %d\n", __FUNCTION__, *type);
2063                         return -EIO;
2064                 }
2065                 bitmap[0] &= ~FATTR4_WORD0_TYPE;
2066         }
2067         dprintk("%s: type=0%o\n", __FUNCTION__, nfs_type2fmt[*type].nfs2type);
2068         return 0;
2069 }
2070
2071 static int decode_attr_change(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *change)
2072 {
2073         uint32_t *p;
2074
2075         *change = 0;
2076         if (unlikely(bitmap[0] & (FATTR4_WORD0_CHANGE - 1U)))
2077                 return -EIO;
2078         if (likely(bitmap[0] & FATTR4_WORD0_CHANGE)) {
2079                 READ_BUF(8);
2080                 READ64(*change);
2081                 bitmap[0] &= ~FATTR4_WORD0_CHANGE;
2082         }
2083         dprintk("%s: change attribute=%Lu\n", __FUNCTION__,
2084                         (unsigned long long)*change);
2085         return 0;
2086 }
2087
2088 static int decode_attr_size(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *size)
2089 {
2090         uint32_t *p;
2091
2092         *size = 0;
2093         if (unlikely(bitmap[0] & (FATTR4_WORD0_SIZE - 1U)))
2094                 return -EIO;
2095         if (likely(bitmap[0] & FATTR4_WORD0_SIZE)) {
2096                 READ_BUF(8);
2097                 READ64(*size);
2098                 bitmap[0] &= ~FATTR4_WORD0_SIZE;
2099         }
2100         dprintk("%s: file size=%Lu\n", __FUNCTION__, (unsigned long long)*size);
2101         return 0;
2102 }
2103
2104 static int decode_attr_link_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2105 {
2106         uint32_t *p;
2107
2108         *res = 0;
2109         if (unlikely(bitmap[0] & (FATTR4_WORD0_LINK_SUPPORT - 1U)))
2110                 return -EIO;
2111         if (likely(bitmap[0] & FATTR4_WORD0_LINK_SUPPORT)) {
2112                 READ_BUF(4);
2113                 READ32(*res);
2114                 bitmap[0] &= ~FATTR4_WORD0_LINK_SUPPORT;
2115         }
2116         dprintk("%s: link support=%s\n", __FUNCTION__, *res == 0 ? "false" : "true");
2117         return 0;
2118 }
2119
2120 static int decode_attr_symlink_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2121 {
2122         uint32_t *p;
2123
2124         *res = 0;
2125         if (unlikely(bitmap[0] & (FATTR4_WORD0_SYMLINK_SUPPORT - 1U)))
2126                 return -EIO;
2127         if (likely(bitmap[0] & FATTR4_WORD0_SYMLINK_SUPPORT)) {
2128                 READ_BUF(4);
2129                 READ32(*res);
2130                 bitmap[0] &= ~FATTR4_WORD0_SYMLINK_SUPPORT;
2131         }
2132         dprintk("%s: symlink support=%s\n", __FUNCTION__, *res == 0 ? "false" : "true");
2133         return 0;
2134 }
2135
2136 static int decode_attr_fsid(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_fsid *fsid)
2137 {
2138         uint32_t *p;
2139
2140         fsid->major = 0;
2141         fsid->minor = 0;
2142         if (unlikely(bitmap[0] & (FATTR4_WORD0_FSID - 1U)))
2143                 return -EIO;
2144         if (likely(bitmap[0] & FATTR4_WORD0_FSID)) {
2145                 READ_BUF(16);
2146                 READ64(fsid->major);
2147                 READ64(fsid->minor);
2148                 bitmap[0] &= ~FATTR4_WORD0_FSID;
2149         }
2150         dprintk("%s: fsid=(0x%Lx/0x%Lx)\n", __FUNCTION__,
2151                         (unsigned long long)fsid->major,
2152                         (unsigned long long)fsid->minor);
2153         return 0;
2154 }
2155
2156 static int decode_attr_lease_time(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2157 {
2158         uint32_t *p;
2159
2160         *res = 60;
2161         if (unlikely(bitmap[0] & (FATTR4_WORD0_LEASE_TIME - 1U)))
2162                 return -EIO;
2163         if (likely(bitmap[0] & FATTR4_WORD0_LEASE_TIME)) {
2164                 READ_BUF(4);
2165                 READ32(*res);
2166                 bitmap[0] &= ~FATTR4_WORD0_LEASE_TIME;
2167         }
2168         dprintk("%s: file size=%u\n", __FUNCTION__, (unsigned int)*res);
2169         return 0;
2170 }
2171
2172 static int decode_attr_aclsupport(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2173 {
2174         uint32_t *p;
2175
2176         *res = ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL;
2177         if (unlikely(bitmap[0] & (FATTR4_WORD0_ACLSUPPORT - 1U)))
2178                 return -EIO;
2179         if (likely(bitmap[0] & FATTR4_WORD0_ACLSUPPORT)) {
2180                 READ_BUF(4);
2181                 READ32(*res);
2182                 bitmap[0] &= ~FATTR4_WORD0_ACLSUPPORT;
2183         }
2184         dprintk("%s: ACLs supported=%u\n", __FUNCTION__, (unsigned int)*res);
2185         return 0;
2186 }
2187
2188 static int decode_attr_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
2189 {
2190         uint32_t *p;
2191
2192         *fileid = 0;
2193         if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEID - 1U)))
2194                 return -EIO;
2195         if (likely(bitmap[0] & FATTR4_WORD0_FILEID)) {
2196                 READ_BUF(8);
2197                 READ64(*fileid);
2198                 bitmap[0] &= ~FATTR4_WORD0_FILEID;
2199         }
2200         dprintk("%s: fileid=%Lu\n", __FUNCTION__, (unsigned long long)*fileid);
2201         return 0;
2202 }
2203
2204 static int decode_attr_files_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2205 {
2206         uint32_t *p;
2207         int status = 0;
2208
2209         *res = 0;
2210         if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_AVAIL - 1U)))
2211                 return -EIO;
2212         if (likely(bitmap[0] & FATTR4_WORD0_FILES_AVAIL)) {
2213                 READ_BUF(8);
2214                 READ64(*res);
2215                 bitmap[0] &= ~FATTR4_WORD0_FILES_AVAIL;
2216         }
2217         dprintk("%s: files avail=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2218         return status;
2219 }
2220
2221 static int decode_attr_files_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2222 {
2223         uint32_t *p;
2224         int status = 0;
2225
2226         *res = 0;
2227         if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_FREE - 1U)))
2228                 return -EIO;
2229         if (likely(bitmap[0] & FATTR4_WORD0_FILES_FREE)) {
2230                 READ_BUF(8);
2231                 READ64(*res);
2232                 bitmap[0] &= ~FATTR4_WORD0_FILES_FREE;
2233         }
2234         dprintk("%s: files free=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2235         return status;
2236 }
2237
2238 static int decode_attr_files_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2239 {
2240         uint32_t *p;
2241         int status = 0;
2242
2243         *res = 0;
2244         if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_TOTAL - 1U)))
2245                 return -EIO;
2246         if (likely(bitmap[0] & FATTR4_WORD0_FILES_TOTAL)) {
2247                 READ_BUF(8);
2248                 READ64(*res);
2249                 bitmap[0] &= ~FATTR4_WORD0_FILES_TOTAL;
2250         }
2251         dprintk("%s: files total=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2252         return status;
2253 }
2254
2255 static int decode_attr_maxfilesize(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2256 {
2257         uint32_t *p;
2258         int status = 0;
2259
2260         *res = 0;
2261         if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXFILESIZE - 1U)))
2262                 return -EIO;
2263         if (likely(bitmap[0] & FATTR4_WORD0_MAXFILESIZE)) {
2264                 READ_BUF(8);
2265                 READ64(*res);
2266                 bitmap[0] &= ~FATTR4_WORD0_MAXFILESIZE;
2267         }
2268         dprintk("%s: maxfilesize=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2269         return status;
2270 }
2271
2272 static int decode_attr_maxlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxlink)
2273 {
2274         uint32_t *p;
2275         int status = 0;
2276
2277         *maxlink = 1;
2278         if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXLINK - 1U)))
2279                 return -EIO;
2280         if (likely(bitmap[0] & FATTR4_WORD0_MAXLINK)) {
2281                 READ_BUF(4);
2282                 READ32(*maxlink);
2283                 bitmap[0] &= ~FATTR4_WORD0_MAXLINK;
2284         }
2285         dprintk("%s: maxlink=%u\n", __FUNCTION__, *maxlink);
2286         return status;
2287 }
2288
2289 static int decode_attr_maxname(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxname)
2290 {
2291         uint32_t *p;
2292         int status = 0;
2293
2294         *maxname = 1024;
2295         if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXNAME - 1U)))
2296                 return -EIO;
2297         if (likely(bitmap[0] & FATTR4_WORD0_MAXNAME)) {
2298                 READ_BUF(4);
2299                 READ32(*maxname);
2300                 bitmap[0] &= ~FATTR4_WORD0_MAXNAME;
2301         }
2302         dprintk("%s: maxname=%u\n", __FUNCTION__, *maxname);
2303         return status;
2304 }
2305
2306 static int decode_attr_maxread(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2307 {
2308         uint32_t *p;
2309         int status = 0;
2310
2311         *res = 1024;
2312         if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXREAD - 1U)))
2313                 return -EIO;
2314         if (likely(bitmap[0] & FATTR4_WORD0_MAXREAD)) {
2315                 uint64_t maxread;
2316                 READ_BUF(8);
2317                 READ64(maxread);
2318                 if (maxread > 0x7FFFFFFF)
2319                         maxread = 0x7FFFFFFF;
2320                 *res = (uint32_t)maxread;
2321                 bitmap[0] &= ~FATTR4_WORD0_MAXREAD;
2322         }
2323         dprintk("%s: maxread=%lu\n", __FUNCTION__, (unsigned long)*res);
2324         return status;
2325 }
2326
2327 static int decode_attr_maxwrite(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2328 {
2329         uint32_t *p;
2330         int status = 0;
2331
2332         *res = 1024;
2333         if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXWRITE - 1U)))
2334                 return -EIO;
2335         if (likely(bitmap[0] & FATTR4_WORD0_MAXWRITE)) {
2336                 uint64_t maxwrite;
2337                 READ_BUF(8);
2338                 READ64(maxwrite);
2339                 if (maxwrite > 0x7FFFFFFF)
2340                         maxwrite = 0x7FFFFFFF;
2341                 *res = (uint32_t)maxwrite;
2342                 bitmap[0] &= ~FATTR4_WORD0_MAXWRITE;
2343         }
2344         dprintk("%s: maxwrite=%lu\n", __FUNCTION__, (unsigned long)*res);
2345         return status;
2346 }
2347
2348 static int decode_attr_mode(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *mode)
2349 {
2350         uint32_t *p;
2351
2352         *mode = 0;
2353         if (unlikely(bitmap[1] & (FATTR4_WORD1_MODE - 1U)))
2354                 return -EIO;
2355         if (likely(bitmap[1] & FATTR4_WORD1_MODE)) {
2356                 READ_BUF(4);
2357                 READ32(*mode);
2358                 *mode &= ~S_IFMT;
2359                 bitmap[1] &= ~FATTR4_WORD1_MODE;
2360         }
2361         dprintk("%s: file mode=0%o\n", __FUNCTION__, (unsigned int)*mode);
2362         return 0;
2363 }
2364
2365 static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *nlink)
2366 {
2367         uint32_t *p;
2368
2369         *nlink = 1;
2370         if (unlikely(bitmap[1] & (FATTR4_WORD1_NUMLINKS - 1U)))
2371                 return -EIO;
2372         if (likely(bitmap[1] & FATTR4_WORD1_NUMLINKS)) {
2373                 READ_BUF(4);
2374                 READ32(*nlink);
2375                 bitmap[1] &= ~FATTR4_WORD1_NUMLINKS;
2376         }
2377         dprintk("%s: nlink=%u\n", __FUNCTION__, (unsigned int)*nlink);
2378         return 0;
2379 }
2380
2381 static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_client *clp, int32_t *uid)
2382 {
2383         uint32_t len, *p;
2384
2385         *uid = -2;
2386         if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER - 1U)))
2387                 return -EIO;
2388         if (likely(bitmap[1] & FATTR4_WORD1_OWNER)) {
2389                 READ_BUF(4);
2390                 READ32(len);
2391                 READ_BUF(len);
2392                 if (len < XDR_MAX_NETOBJ) {
2393                         if (nfs_map_name_to_uid(clp, (char *)p, len, uid) != 0)
2394                                 dprintk("%s: nfs_map_name_to_uid failed!\n",
2395                                                 __FUNCTION__);
2396                 } else
2397                         printk(KERN_WARNING "%s: name too long (%u)!\n",
2398                                         __FUNCTION__, len);
2399                 bitmap[1] &= ~FATTR4_WORD1_OWNER;
2400         }
2401         dprintk("%s: uid=%d\n", __FUNCTION__, (int)*uid);
2402         return 0;
2403 }
2404
2405 static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_client *clp, int32_t *gid)
2406 {
2407         uint32_t len, *p;
2408
2409         *gid = -2;
2410         if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER_GROUP - 1U)))
2411                 return -EIO;
2412         if (likely(bitmap[1] & FATTR4_WORD1_OWNER_GROUP)) {
2413                 READ_BUF(4);
2414                 READ32(len);
2415                 READ_BUF(len);
2416                 if (len < XDR_MAX_NETOBJ) {
2417                         if (nfs_map_group_to_gid(clp, (char *)p, len, gid) != 0)
2418                                 dprintk("%s: nfs_map_group_to_gid failed!\n",
2419                                                 __FUNCTION__);
2420                 } else
2421                         printk(KERN_WARNING "%s: name too long (%u)!\n",
2422                                         __FUNCTION__, len);
2423                 bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP;
2424         }
2425         dprintk("%s: gid=%d\n", __FUNCTION__, (int)*gid);
2426         return 0;
2427 }
2428
2429 static int decode_attr_rdev(struct xdr_stream *xdr, uint32_t *bitmap, dev_t *rdev)
2430 {
2431         uint32_t major = 0, minor = 0, *p;
2432
2433         *rdev = MKDEV(0,0);
2434         if (unlikely(bitmap[1] & (FATTR4_WORD1_RAWDEV - 1U)))
2435                 return -EIO;
2436         if (likely(bitmap[1] & FATTR4_WORD1_RAWDEV)) {
2437                 dev_t tmp;
2438
2439                 READ_BUF(8);
2440                 READ32(major);
2441                 READ32(minor);
2442                 tmp = MKDEV(major, minor);
2443                 if (MAJOR(tmp) == major && MINOR(tmp) == minor)
2444                         *rdev = tmp;
2445                 bitmap[1] &= ~ FATTR4_WORD1_RAWDEV;
2446         }
2447         dprintk("%s: rdev=(0x%x:0x%x)\n", __FUNCTION__, major, minor);
2448         return 0;
2449 }
2450
2451 static int decode_attr_space_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2452 {
2453         uint32_t *p;
2454         int status = 0;
2455
2456         *res = 0;
2457         if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_AVAIL - 1U)))
2458                 return -EIO;
2459         if (likely(bitmap[1] & FATTR4_WORD1_SPACE_AVAIL)) {
2460                 READ_BUF(8);
2461                 READ64(*res);
2462                 bitmap[1] &= ~FATTR4_WORD1_SPACE_AVAIL;
2463         }
2464         dprintk("%s: space avail=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2465         return status;
2466 }
2467
2468 static int decode_attr_space_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2469 {
2470         uint32_t *p;
2471         int status = 0;
2472
2473         *res = 0;
2474         if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_FREE - 1U)))
2475                 return -EIO;
2476         if (likely(bitmap[1] & FATTR4_WORD1_SPACE_FREE)) {
2477                 READ_BUF(8);
2478                 READ64(*res);
2479                 bitmap[1] &= ~FATTR4_WORD1_SPACE_FREE;
2480         }
2481         dprintk("%s: space free=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2482         return status;
2483 }
2484
2485 static int decode_attr_space_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2486 {
2487         uint32_t *p;
2488         int status = 0;
2489
2490         *res = 0;
2491         if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_TOTAL - 1U)))
2492                 return -EIO;
2493         if (likely(bitmap[1] & FATTR4_WORD1_SPACE_TOTAL)) {
2494                 READ_BUF(8);
2495                 READ64(*res);
2496                 bitmap[1] &= ~FATTR4_WORD1_SPACE_TOTAL;
2497         }
2498         dprintk("%s: space total=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2499         return status;
2500 }
2501
2502 static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *used)
2503 {
2504         uint32_t *p;
2505
2506         *used = 0;
2507         if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_USED - 1U)))
2508                 return -EIO;
2509         if (likely(bitmap[1] & FATTR4_WORD1_SPACE_USED)) {
2510                 READ_BUF(8);
2511                 READ64(*used);
2512                 bitmap[1] &= ~FATTR4_WORD1_SPACE_USED;
2513         }
2514         dprintk("%s: space used=%Lu\n", __FUNCTION__,
2515                         (unsigned long long)*used);
2516         return 0;
2517 }
2518
2519 static int decode_attr_time(struct xdr_stream *xdr, struct timespec *time)
2520 {
2521         uint32_t *p;
2522         uint64_t sec;
2523         uint32_t nsec;
2524
2525         READ_BUF(12);
2526         READ64(sec);
2527         READ32(nsec);
2528         time->tv_sec = (time_t)sec;
2529         time->tv_nsec = (long)nsec;
2530         return 0;
2531 }
2532
2533 static int decode_attr_time_access(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
2534 {
2535         int status = 0;
2536
2537         time->tv_sec = 0;
2538         time->tv_nsec = 0;
2539         if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_ACCESS - 1U)))
2540                 return -EIO;
2541         if (likely(bitmap[1] & FATTR4_WORD1_TIME_ACCESS)) {
2542                 status = decode_attr_time(xdr, time);
2543                 bitmap[1] &= ~FATTR4_WORD1_TIME_ACCESS;
2544         }
2545         dprintk("%s: atime=%ld\n", __FUNCTION__, (long)time->tv_sec);
2546         return status;
2547 }
2548
2549 static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
2550 {
2551         int status = 0;
2552
2553         time->tv_sec = 0;
2554         time->tv_nsec = 0;
2555         if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_METADATA - 1U)))
2556                 return -EIO;
2557         if (likely(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) {
2558                 status = decode_attr_time(xdr, time);
2559                 bitmap[1] &= ~FATTR4_WORD1_TIME_METADATA;
2560         }
2561         dprintk("%s: ctime=%ld\n", __FUNCTION__, (long)time->tv_sec);
2562         return status;
2563 }
2564
2565 static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
2566 {
2567         int status = 0;
2568
2569         time->tv_sec = 0;
2570         time->tv_nsec = 0;
2571         if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_MODIFY - 1U)))
2572                 return -EIO;
2573         if (likely(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) {
2574                 status = decode_attr_time(xdr, time);
2575                 bitmap[1] &= ~FATTR4_WORD1_TIME_MODIFY;
2576         }
2577         dprintk("%s: mtime=%ld\n", __FUNCTION__, (long)time->tv_sec);
2578         return status;
2579 }
2580
2581 static int verify_attr_len(struct xdr_stream *xdr, uint32_t *savep, uint32_t attrlen)
2582 {
2583         unsigned int attrwords = XDR_QUADLEN(attrlen);
2584         unsigned int nwords = xdr->p - savep;
2585
2586         if (unlikely(attrwords != nwords)) {
2587                 printk(KERN_WARNING "%s: server returned incorrect attribute length: %u %c %u\n",
2588                                 __FUNCTION__,
2589                                 attrwords << 2,
2590                                 (attrwords < nwords) ? '<' : '>',
2591                                 nwords << 2);
2592                 return -EIO;
2593         }
2594         return 0;
2595 }
2596
2597 static int decode_change_info(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
2598 {
2599         uint32_t *p;
2600
2601         READ_BUF(20);
2602         READ32(cinfo->atomic);
2603         READ64(cinfo->before);
2604         READ64(cinfo->after);
2605         return 0;
2606 }
2607
2608 static int decode_access(struct xdr_stream *xdr, struct nfs4_accessres *access)
2609 {
2610         uint32_t *p;
2611         uint32_t supp, acc;
2612         int status;
2613
2614         status = decode_op_hdr(xdr, OP_ACCESS);
2615         if (status)
2616                 return status;
2617         READ_BUF(8);
2618         READ32(supp);
2619         READ32(acc);
2620         access->supported = supp;
2621         access->access = acc;
2622         return 0;
2623 }
2624
2625 static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res)
2626 {
2627         uint32_t *p;
2628         int status;
2629
2630         status = decode_op_hdr(xdr, OP_CLOSE);
2631         if (status)
2632                 return status;
2633         READ_BUF(sizeof(res->stateid.data));
2634         COPYMEM(res->stateid.data, sizeof(res->stateid.data));
2635         return 0;
2636 }
2637
2638 static int decode_commit(struct xdr_stream *xdr, struct nfs_writeres *res)
2639 {
2640         uint32_t *p;
2641         int status;
2642
2643         status = decode_op_hdr(xdr, OP_COMMIT);
2644         if (status)
2645                 return status;
2646         READ_BUF(8);
2647         COPYMEM(res->verf->verifier, 8);
2648         return 0;
2649 }
2650
2651 static int decode_create(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
2652 {
2653         uint32_t *p;
2654         uint32_t bmlen;
2655         int status;
2656
2657         status = decode_op_hdr(xdr, OP_CREATE);
2658         if (status)
2659                 return status;
2660         if ((status = decode_change_info(xdr, cinfo)))
2661                 return status;
2662         READ_BUF(4);
2663         READ32(bmlen);
2664         READ_BUF(bmlen << 2);
2665         return 0;
2666 }
2667
2668 static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_res *res)
2669 {
2670         uint32_t *savep;
2671         uint32_t attrlen,
2672                  bitmap[2] = {0};
2673         int status;
2674
2675         if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
2676                 goto xdr_error;
2677         if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
2678                 goto xdr_error;
2679         if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
2680                 goto xdr_error;
2681         if ((status = decode_attr_supported(xdr, bitmap, res->attr_bitmask)) != 0)
2682                 goto xdr_error;
2683         if ((status = decode_attr_link_support(xdr, bitmap, &res->has_links)) != 0)
2684                 goto xdr_error;
2685         if ((status = decode_attr_symlink_support(xdr, bitmap, &res->has_symlinks)) != 0)
2686                 goto xdr_error;
2687         if ((status = decode_attr_aclsupport(xdr, bitmap, &res->acl_bitmask)) != 0)
2688                 goto xdr_error;
2689         status = verify_attr_len(xdr, savep, attrlen);
2690 xdr_error:
2691         if (status != 0)
2692                 printk(KERN_NOTICE "%s: xdr error %d!\n", __FUNCTION__, -status);
2693         return status;
2694 }
2695
2696 static int decode_statfs(struct xdr_stream *xdr, struct nfs_fsstat *fsstat)
2697 {
2698         uint32_t *savep;
2699         uint32_t attrlen,
2700                  bitmap[2] = {0};
2701         int status;
2702
2703         if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
2704                 goto xdr_error;
2705         if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
2706                 goto xdr_error;
2707         if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
2708                 goto xdr_error;
2709
2710         if ((status = decode_attr_files_avail(xdr, bitmap, &fsstat->afiles)) != 0)
2711                 goto xdr_error;
2712         if ((status = decode_attr_files_free(xdr, bitmap, &fsstat->ffiles)) != 0)
2713                 goto xdr_error;
2714         if ((status = decode_attr_files_total(xdr, bitmap, &fsstat->tfiles)) != 0)
2715                 goto xdr_error;
2716         if ((status = decode_attr_space_avail(xdr, bitmap, &fsstat->abytes)) != 0)
2717                 goto xdr_error;
2718         if ((status = decode_attr_space_free(xdr, bitmap, &fsstat->fbytes)) != 0)
2719                 goto xdr_error;
2720         if ((status = decode_attr_space_total(xdr, bitmap, &fsstat->tbytes)) != 0)
2721                 goto xdr_error;
2722
2723         status = verify_attr_len(xdr, savep, attrlen);
2724 xdr_error:
2725         if (status != 0)
2726                 printk(KERN_NOTICE "%s: xdr error %d!\n", __FUNCTION__, -status);
2727         return status;
2728 }
2729
2730 static int decode_pathconf(struct xdr_stream *xdr, struct nfs_pathconf *pathconf)
2731 {
2732         uint32_t *savep;
2733         uint32_t attrlen,
2734                  bitmap[2] = {0};
2735         int status;
2736
2737         if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
2738                 goto xdr_error;
2739         if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
2740                 goto xdr_error;
2741         if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
2742                 goto xdr_error;
2743
2744         if ((status = decode_attr_maxlink(xdr, bitmap, &pathconf->max_link)) != 0)
2745                 goto xdr_error;
2746         if ((status = decode_attr_maxname(xdr, bitmap, &pathconf->max_namelen)) != 0)
2747                 goto xdr_error;
2748
2749         status = verify_attr_len(xdr, savep, attrlen);
2750 xdr_error:
2751         if (status != 0)
2752                 printk(KERN_NOTICE "%s: xdr error %d!\n", __FUNCTION__, -status);
2753         return status;
2754 }
2755
2756 static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr, const struct nfs_server *server)
2757 {
2758         uint32_t *savep;
2759         uint32_t attrlen,
2760                  bitmap[2] = {0},
2761                  type;
2762         int status, fmode = 0;
2763
2764         if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
2765                 goto xdr_error;
2766         if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
2767                 goto xdr_error;
2768
2769         fattr->bitmap[0] = bitmap[0];
2770         fattr->bitmap[1] = bitmap[1];
2771
2772         if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
2773                 goto xdr_error;
2774
2775
2776         if ((status = decode_attr_type(xdr, bitmap, &type)) != 0)
2777                 goto xdr_error;
2778         fattr->type = nfs_type2fmt[type].nfs2type;
2779         fmode = nfs_type2fmt[type].mode;
2780
2781         if ((status = decode_attr_change(xdr, bitmap, &fattr->change_attr)) != 0)
2782                 goto xdr_error;
2783         if ((status = decode_attr_size(xdr, bitmap, &fattr->size)) != 0)
2784                 goto xdr_error;
2785         if ((status = decode_attr_fsid(xdr, bitmap, &fattr->fsid_u.nfs4)) != 0)
2786                 goto xdr_error;
2787         if ((status = decode_attr_fileid(xdr, bitmap, &fattr->fileid)) != 0)
2788                 goto xdr_error;
2789         if ((status = decode_attr_mode(xdr, bitmap, &fattr->mode)) != 0)
2790                 goto xdr_error;
2791         fattr->mode |= fmode;
2792         if ((status = decode_attr_nlink(xdr, bitmap, &fattr->nlink)) != 0)
2793                 goto xdr_error;
2794         if ((status = decode_attr_owner(xdr, bitmap, server->nfs4_state, &fattr->uid)) != 0)
2795                 goto xdr_error;
2796         if ((status = decode_attr_group(xdr, bitmap, server->nfs4_state, &fattr->gid)) != 0)
2797                 goto xdr_error;
2798         if ((status = decode_attr_rdev(xdr, bitmap, &fattr->rdev)) != 0)
2799                 goto xdr_error;
2800         if ((status = decode_attr_space_used(xdr, bitmap, &fattr->du.nfs3.used)) != 0)
2801                 goto xdr_error;
2802         if ((status = decode_attr_time_access(xdr, bitmap, &fattr->atime)) != 0)
2803                 goto xdr_error;
2804         if ((status = decode_attr_time_metadata(xdr, bitmap, &fattr->ctime)) != 0)
2805                 goto xdr_error;
2806         if ((status = decode_attr_time_modify(xdr, bitmap, &fattr->mtime)) != 0)
2807                 goto xdr_error;
2808         if ((status = verify_attr_len(xdr, savep, attrlen)) == 0) {
2809                 fattr->valid = NFS_ATTR_FATTR | NFS_ATTR_FATTR_V3 | NFS_ATTR_FATTR_V4;
2810                 fattr->timestamp = jiffies;
2811         }
2812 xdr_error:
2813         if (status != 0)
2814                 printk(KERN_NOTICE "%s: xdr error %d!\n", __FUNCTION__, -status);
2815         return status;
2816 }
2817
2818
2819 static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo)
2820 {
2821         uint32_t *savep;
2822         uint32_t attrlen, bitmap[2];
2823         int status;
2824
2825         if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
2826                 goto xdr_error;
2827         if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
2828                 goto xdr_error;
2829         if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
2830                 goto xdr_error;
2831
2832         fsinfo->rtmult = fsinfo->wtmult = 512;  /* ??? */
2833
2834         if ((status = decode_attr_lease_time(xdr, bitmap, &fsinfo->lease_time)) != 0)
2835                 goto xdr_error;
2836         if ((status = decode_attr_maxfilesize(xdr, bitmap, &fsinfo->maxfilesize)) != 0)
2837                 goto xdr_error;
2838         if ((status = decode_attr_maxread(xdr, bitmap, &fsinfo->rtmax)) != 0)
2839                 goto xdr_error;
2840         fsinfo->rtpref = fsinfo->dtpref = fsinfo->rtmax;
2841         if ((status = decode_attr_maxwrite(xdr, bitmap, &fsinfo->wtmax)) != 0)
2842                 goto xdr_error;
2843         fsinfo->wtpref = fsinfo->wtmax;
2844
2845         status = verify_attr_len(xdr, savep, attrlen);
2846 xdr_error:
2847         if (status != 0)
2848                 printk(KERN_NOTICE "%s: xdr error %d!\n", __FUNCTION__, -status);
2849         return status;
2850 }
2851
2852 static int decode_getfh(struct xdr_stream *xdr, struct nfs_fh *fh)
2853 {
2854         uint32_t *p;
2855         uint32_t len;
2856         int status;
2857
2858         status = decode_op_hdr(xdr, OP_GETFH);
2859         if (status)
2860                 return status;
2861         /* Zero handle first to allow comparisons */
2862         memset(fh, 0, sizeof(*fh));
2863
2864         READ_BUF(4);
2865         READ32(len);
2866         if (len > NFS4_FHSIZE)
2867                 return -EIO;
2868         fh->size = len;
2869         READ_BUF(len);
2870         COPYMEM(fh->data, len);
2871         return 0;
2872 }
2873
2874 static int decode_link(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
2875 {
2876         int status;
2877
2878         status = decode_op_hdr(xdr, OP_LINK);
2879         if (status)
2880                 return status;
2881         return decode_change_info(xdr, cinfo);
2882 }
2883
2884 /*
2885  * We create the owner, so we know a proper owner.id length is 4.
2886  */
2887 static int decode_lock_denied (struct xdr_stream *xdr, struct nfs_lock_denied *denied)
2888 {
2889         uint32_t *p;
2890         uint32_t namelen;
2891
2892         READ_BUF(32);
2893         READ64(denied->offset);
2894         READ64(denied->length);
2895         READ32(denied->type);
2896         READ64(denied->owner.clientid);
2897         READ32(namelen);
2898         READ_BUF(namelen);
2899         if (namelen == 4)
2900                 READ32(denied->owner.id);
2901         return -NFS4ERR_DENIED;
2902 }
2903
2904 static int decode_lock(struct xdr_stream *xdr, struct nfs_lockres *res)
2905 {
2906         uint32_t *p;
2907         int status;
2908
2909         status = decode_op_hdr(xdr, OP_LOCK);
2910         if (status == 0) {
2911                 READ_BUF(sizeof(nfs4_stateid));
2912                 COPYMEM(&res->u.stateid, sizeof(res->u.stateid));
2913         } else if (status == -NFS4ERR_DENIED)
2914                 return decode_lock_denied(xdr, &res->u.denied);
2915         return status;
2916 }
2917
2918 static int decode_lockt(struct xdr_stream *xdr, struct nfs_lockres *res)
2919 {
2920         int status;
2921         status = decode_op_hdr(xdr, OP_LOCKT);
2922         if (status == -NFS4ERR_DENIED)
2923                 return decode_lock_denied(xdr, &res->u.denied);
2924         return status;
2925 }
2926
2927 static int decode_locku(struct xdr_stream *xdr, struct nfs_lockres *res)
2928 {
2929         uint32_t *p;
2930         int status;
2931
2932         status = decode_op_hdr(xdr, OP_LOCKU);
2933         if (status == 0) {
2934                 READ_BUF(sizeof(res->u.stateid.data));
2935                 COPYMEM(res->u.stateid.data, sizeof(res->u.stateid.data));
2936         }
2937         return status;
2938 }
2939
2940 static int decode_lookup(struct xdr_stream *xdr)
2941 {
2942         return decode_op_hdr(xdr, OP_LOOKUP);
2943 }
2944
2945 /* This is too sick! */
2946 static int decode_space_limit(struct xdr_stream *xdr, u64 *maxsize)
2947 {
2948         uint32_t *p;
2949         uint32_t limit_type, nblocks, blocksize;
2950
2951         READ_BUF(12);
2952         READ32(limit_type);
2953         switch (limit_type) {
2954                 case 1:
2955                         READ64(*maxsize);
2956                         break;
2957                 case 2:
2958                         READ32(nblocks);
2959                         READ32(blocksize);
2960                         *maxsize = (uint64_t)nblocks * (uint64_t)blocksize;
2961         }
2962         return 0;
2963 }
2964
2965 static int decode_delegation(struct xdr_stream *xdr, struct nfs_openres *res)
2966 {
2967         uint32_t *p;
2968         uint32_t delegation_type;
2969
2970         READ_BUF(4);
2971         READ32(delegation_type);
2972         if (delegation_type == NFS4_OPEN_DELEGATE_NONE) {
2973                 res->delegation_type = 0;
2974                 return 0;
2975         }
2976         READ_BUF(20);
2977         COPYMEM(res->delegation.data, sizeof(res->delegation.data));
2978         READ32(res->do_recall);
2979         switch (delegation_type) {
2980                 case NFS4_OPEN_DELEGATE_READ:
2981                         res->delegation_type = FMODE_READ;
2982                         break;
2983                 case NFS4_OPEN_DELEGATE_WRITE:
2984                         res->delegation_type = FMODE_WRITE|FMODE_READ;
2985                         if (decode_space_limit(xdr, &res->maxsize) < 0)
2986                                 return -EIO;
2987         }
2988         return decode_ace(xdr, NULL, res->server->nfs4_state);
2989 }
2990
2991 static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res)
2992 {
2993         uint32_t *p;
2994         uint32_t bmlen;
2995         int status;
2996
2997         status = decode_op_hdr(xdr, OP_OPEN);
2998         if (status)
2999                 return status;
3000         READ_BUF(sizeof(res->stateid.data));
3001         COPYMEM(res->stateid.data, sizeof(res->stateid.data));
3002
3003         decode_change_info(xdr, &res->cinfo);
3004
3005         READ_BUF(8);
3006         READ32(res->rflags);
3007         READ32(bmlen);
3008         if (bmlen > 10)
3009                 goto xdr_error;
3010
3011         READ_BUF(bmlen << 2);
3012         p += bmlen;
3013         return decode_delegation(xdr, res);
3014 xdr_error:
3015         printk(KERN_NOTICE "%s: xdr error!\n", __FUNCTION__);
3016         return -EIO;
3017 }
3018
3019 static int decode_open_confirm(struct xdr_stream *xdr, struct nfs_open_confirmres *res)
3020 {
3021         uint32_t *p;
3022         int status;
3023
3024         status = decode_op_hdr(xdr, OP_OPEN_CONFIRM);
3025         if (status)
3026                 return status;
3027         READ_BUF(sizeof(res->stateid.data));
3028         COPYMEM(res->stateid.data, sizeof(res->stateid.data));
3029         return 0;
3030 }
3031
3032 static int decode_open_downgrade(struct xdr_stream *xdr, struct nfs_closeres *res)
3033 {
3034         uint32_t *p;
3035         int status;
3036
3037         status = decode_op_hdr(xdr, OP_OPEN_DOWNGRADE);
3038         if (status)
3039                 return status;
3040         READ_BUF(sizeof(res->stateid.data));
3041         COPYMEM(res->stateid.data, sizeof(res->stateid.data));
3042         return 0;
3043 }
3044
3045 static int decode_putfh(struct xdr_stream *xdr)
3046 {
3047         return decode_op_hdr(xdr, OP_PUTFH);
3048 }
3049
3050 static int decode_putrootfh(struct xdr_stream *xdr)
3051 {
3052         return decode_op_hdr(xdr, OP_PUTROOTFH);
3053 }
3054
3055 static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs_readres *res)
3056 {
3057         struct kvec *iov = req->rq_rcv_buf.head;
3058         uint32_t *p;
3059         uint32_t count, eof, recvd, hdrlen;
3060         int status;
3061
3062         status = decode_op_hdr(xdr, OP_READ);
3063         if (status)
3064                 return status;
3065         READ_BUF(8);
3066         READ32(eof);
3067         READ32(count);
3068         hdrlen = (u8 *) p - (u8 *) iov->iov_base;
3069         recvd = req->rq_rcv_buf.len - hdrlen;
3070         if (count > recvd) {
3071                 printk(KERN_WARNING "NFS: server cheating in read reply: "
3072                                 "count %u > recvd %u\n", count, recvd);
3073                 count = recvd;
3074                 eof = 0;
3075         }
3076         xdr_read_pages(xdr, count);
3077         res->eof = eof;
3078         res->count = count;
3079         return 0;
3080 }
3081
3082 static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs4_readdir_res *readdir)
3083 {
3084         struct xdr_buf  *rcvbuf = &req->rq_rcv_buf;
3085         struct page     *page = *rcvbuf->pages;
3086         struct kvec     *iov = rcvbuf->head;
3087         unsigned int    nr, pglen = rcvbuf->page_len;
3088         uint32_t        *end, *entry, *p, *kaddr;
3089         uint32_t        len, attrlen;
3090         int             hdrlen, recvd, status;
3091
3092         status = decode_op_hdr(xdr, OP_READDIR);
3093         if (status)
3094                 return status;
3095         READ_BUF(8);
3096         COPYMEM(readdir->verifier.data, 8);
3097         dprintk("%s: verifier = 0x%x%x\n",
3098                         __FUNCTION__,
3099                         ((u32 *)readdir->verifier.data)[0],
3100                         ((u32 *)readdir->verifier.data)[1]);
3101
3102
3103         hdrlen = (char *) p - (char *) iov->iov_base;
3104         recvd = rcvbuf->len - hdrlen;
3105         if (pglen > recvd)
3106                 pglen = recvd;
3107         xdr_read_pages(xdr, pglen);
3108
3109         BUG_ON(pglen + readdir->pgbase > PAGE_CACHE_SIZE);
3110         kaddr = p = (uint32_t *) kmap_atomic(page, KM_USER0);
3111         end = (uint32_t *) ((char *)p + pglen + readdir->pgbase);
3112         entry = p;
3113         for (nr = 0; *p++; nr++) {
3114                 if (p + 3 > end)
3115                         goto short_pkt;
3116                 dprintk("cookie = %Lu, ", *((unsigned long long *)p));
3117                 p += 2;                 /* cookie */
3118                 len = ntohl(*p++);      /* filename length */
3119                 if (len > NFS4_MAXNAMLEN) {
3120                         printk(KERN_WARNING "NFS: giant filename in readdir (len 0x%x)\n", len);
3121                         goto err_unmap;
3122                 }
3123                 dprintk("filename = %*s\n", len, (char *)p);
3124                 p += XDR_QUADLEN(len);
3125                 if (p + 1 > end)
3126                         goto short_pkt;
3127                 len = ntohl(*p++);      /* bitmap length */
3128                 p += len;
3129                 if (p + 1 > end)
3130                         goto short_pkt;
3131                 attrlen = XDR_QUADLEN(ntohl(*p++));
3132                 p += attrlen;           /* attributes */
3133                 if (p + 2 > end)
3134                         goto short_pkt;
3135                 entry = p;
3136         }
3137         if (!nr && (entry[0] != 0 || entry[1] == 0))
3138                 goto short_pkt;
3139 out:
3140         kunmap_atomic(kaddr, KM_USER0);
3141         return 0;
3142 short_pkt:
3143         dprintk("%s: short packet at entry %d\n", __FUNCTION__, nr);
3144         entry[0] = entry[1] = 0;
3145         /* truncate listing ? */
3146         if (!nr) {
3147                 printk(KERN_NOTICE "NFS: readdir reply truncated!\n");
3148                 entry[1] = 1;
3149         }
3150         goto out;
3151 err_unmap:
3152         kunmap_atomic(kaddr, KM_USER0);
3153         return -errno_NFSERR_IO;
3154 }
3155
3156 static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req)
3157 {
3158         struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
3159         struct kvec *iov = rcvbuf->head;
3160         int hdrlen, len, recvd;
3161         uint32_t *p;
3162         char *kaddr;
3163         int status;
3164
3165         status = decode_op_hdr(xdr, OP_READLINK);
3166         if (status)
3167                 return status;
3168
3169         /* Convert length of symlink */
3170         READ_BUF(4);
3171         READ32(len);
3172         if (len >= rcvbuf->page_len || len <= 0) {
3173                 dprintk(KERN_WARNING "nfs: server returned giant symlink!\n");
3174                 return -ENAMETOOLONG;
3175         }
3176         hdrlen = (char *) xdr->p - (char *) iov->iov_base;
3177         recvd = req->rq_rcv_buf.len - hdrlen;
3178         if (recvd < len) {
3179                 printk(KERN_WARNING "NFS: server cheating in readlink reply: "
3180                                 "count %u > recvd %u\n", len, recvd);
3181                 return -EIO;
3182         }
3183         xdr_read_pages(xdr, len);
3184         /*
3185          * The XDR encode routine has set things up so that
3186          * the link text will be copied directly into the
3187          * buffer.  We just have to do overflow-checking,
3188          * and and null-terminate the text (the VFS expects
3189          * null-termination).
3190          */
3191         kaddr = (char *)kmap_atomic(rcvbuf->pages[0], KM_USER0);
3192         kaddr[len+rcvbuf->page_base] = '\0';
3193         kunmap_atomic(kaddr, KM_USER0);
3194         return 0;
3195 }
3196
3197 static int decode_remove(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
3198 {
3199         int status;
3200
3201         status = decode_op_hdr(xdr, OP_REMOVE);
3202         if (status)
3203                 goto out;
3204         status = decode_change_info(xdr, cinfo);
3205 out:
3206         return status;
3207 }
3208
3209 static int decode_rename(struct xdr_stream *xdr, struct nfs4_change_info *old_cinfo,
3210               struct nfs4_change_info *new_cinfo)
3211 {
3212         int status;
3213
3214         status = decode_op_hdr(xdr, OP_RENAME);
3215         if (status)
3216                 goto out;
3217         if ((status = decode_change_info(xdr, old_cinfo)))
3218                 goto out;
3219         status = decode_change_info(xdr, new_cinfo);
3220 out:
3221         return status;
3222 }
3223
3224 static int decode_renew(struct xdr_stream *xdr)
3225 {
3226         return decode_op_hdr(xdr, OP_RENEW);
3227 }
3228
3229 static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req,
3230                 size_t *acl_len)
3231 {
3232         uint32_t *savep;
3233         uint32_t attrlen,
3234                  bitmap[2] = {0};
3235         struct kvec *iov = req->rq_rcv_buf.head;
3236         int status;
3237
3238         *acl_len = 0;
3239         if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
3240                 goto out;
3241         if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
3242                 goto out;
3243         if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
3244                 goto out;
3245
3246         if (unlikely(bitmap[0] & (FATTR4_WORD0_ACL - 1U)))
3247                 return -EIO;
3248         if (likely(bitmap[0] & FATTR4_WORD0_ACL)) {
3249                 int hdrlen, recvd;
3250
3251                 /* We ignore &savep and don't do consistency checks on
3252                  * the attr length.  Let userspace figure it out.... */
3253                 hdrlen = (u8 *)xdr->p - (u8 *)iov->iov_base;
3254                 recvd = req->rq_rcv_buf.len - hdrlen;
3255                 if (attrlen > recvd) {
3256                         printk(KERN_WARNING "NFS: server cheating in getattr"
3257                                         " acl reply: attrlen %u > recvd %u\n",
3258                                         attrlen, recvd);
3259                         return -EINVAL;
3260                 }
3261                 if (attrlen <= *acl_len)
3262                         xdr_read_pages(xdr, attrlen);
3263                 *acl_len = attrlen;
3264         }
3265
3266 out:
3267         return status;
3268 }
3269
3270 static int
3271 decode_savefh(struct xdr_stream *xdr)
3272 {
3273         return decode_op_hdr(xdr, OP_SAVEFH);
3274 }
3275
3276 static int decode_setattr(struct xdr_stream *xdr, struct nfs_setattrres *res)
3277 {
3278         uint32_t *p;
3279         uint32_t bmlen;
3280         int status;
3281
3282
3283         status = decode_op_hdr(xdr, OP_SETATTR);
3284         if (status)
3285                 return status;
3286         READ_BUF(4);
3287         READ32(bmlen);
3288         READ_BUF(bmlen << 2);
3289         return 0;
3290 }
3291
3292 static int decode_setclientid(struct xdr_stream *xdr, struct nfs4_client *clp)
3293 {
3294         uint32_t *p;
3295         uint32_t opnum;
3296         int32_t nfserr;
3297
3298         READ_BUF(8);
3299         READ32(opnum);
3300         if (opnum != OP_SETCLIENTID) {
3301                 printk(KERN_NOTICE
3302                                 "nfs4_decode_setclientid: Server returned operation"
3303                                 " %d\n", opnum);
3304                 return -EIO;
3305         }
3306         READ32(nfserr);
3307         if (nfserr == NFS_OK) {
3308                 READ_BUF(8 + sizeof(clp->cl_confirm.data));
3309                 READ64(clp->cl_clientid);
3310                 COPYMEM(clp->cl_confirm.data, sizeof(clp->cl_confirm.data));
3311         } else if (nfserr == NFSERR_CLID_INUSE) {
3312                 uint32_t len;
3313
3314                 /* skip netid string */
3315                 READ_BUF(4);
3316                 READ32(len);
3317                 READ_BUF(len);
3318
3319                 /* skip uaddr string */
3320                 READ_BUF(4);
3321                 READ32(len);
3322                 READ_BUF(len);
3323                 return -NFSERR_CLID_INUSE;
3324         } else
3325                 return -nfs_stat_to_errno(nfserr);
3326
3327         return 0;
3328 }
3329
3330 static int decode_setclientid_confirm(struct xdr_stream *xdr)
3331 {
3332         return decode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM);
3333 }
3334
3335 static int decode_write(struct xdr_stream *xdr, struct nfs_writeres *res)
3336 {
3337         uint32_t *p;
3338         int status;
3339
3340         status = decode_op_hdr(xdr, OP_WRITE);
3341         if (status)
3342                 return status;
3343
3344         READ_BUF(16);
3345         READ32(res->count);
3346         READ32(res->verf->committed);
3347         COPYMEM(res->verf->verifier, 8);
3348         return 0;
3349 }
3350
3351 static int decode_delegreturn(struct xdr_stream *xdr)
3352 {
3353         return decode_op_hdr(xdr, OP_DELEGRETURN);
3354 }
3355
3356 /*
3357  * Decode OPEN_DOWNGRADE response
3358  */
3359 static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_closeres *res)
3360 {
3361         struct xdr_stream xdr;
3362         struct compound_hdr hdr;
3363         int status;
3364
3365         xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3366         status = decode_compound_hdr(&xdr, &hdr);
3367         if (status)
3368                 goto out;
3369         status = decode_putfh(&xdr);
3370         if (status)
3371                 goto out;
3372         status = decode_open_downgrade(&xdr, res);
3373 out:
3374         return status;
3375 }
3376
3377 /*
3378  * END OF "GENERIC" DECODE ROUTINES.
3379  */
3380
3381 /*
3382  * Decode ACCESS response
3383  */
3384 static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_accessres *res)
3385 {
3386         struct xdr_stream xdr;
3387         struct compound_hdr hdr;
3388         int status;
3389
3390         xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3391         if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3392                 goto out;
3393         if ((status = decode_putfh(&xdr)) == 0)
3394                 status = decode_access(&xdr, res);
3395 out:
3396         return status;
3397 }
3398
3399 /*
3400  * Decode LOOKUP response
3401  */
3402 static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_lookup_res *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         if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3410                 goto out;
3411         if ((status = decode_putfh(&xdr)) != 0)
3412                 goto out;
3413         if ((status = decode_lookup(&xdr)) != 0)
3414                 goto out;
3415         if ((status = decode_getfh(&xdr, res->fh)) != 0)
3416                 goto out;
3417         status = decode_getfattr(&xdr, res->fattr, res->server);
3418 out:
3419         return status;
3420 }
3421
3422 /*
3423  * Decode LOOKUP_ROOT response
3424  */
3425 static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_lookup_res *res)
3426 {
3427         struct xdr_stream xdr;
3428         struct compound_hdr hdr;
3429         int status;
3430
3431         xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3432         if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3433                 goto out;
3434         if ((status = decode_putrootfh(&xdr)) != 0)
3435                 goto out;
3436         if ((status = decode_getfh(&xdr, res->fh)) == 0)
3437                 status = decode_getfattr(&xdr, res->fattr, res->server);
3438 out:
3439         return status;
3440 }
3441
3442 /*
3443  * Decode REMOVE response
3444  */
3445 static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_change_info *cinfo)
3446 {
3447         struct xdr_stream xdr;
3448         struct compound_hdr hdr;
3449         int status;
3450
3451         xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3452         if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3453                 goto out;
3454         if ((status = decode_putfh(&xdr)) == 0)
3455                 status = decode_remove(&xdr, cinfo);
3456 out:
3457         return status;
3458 }
3459
3460 /*
3461  * Decode RENAME response
3462  */
3463 static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_rename_res *res)
3464 {
3465         struct xdr_stream xdr;
3466         struct compound_hdr hdr;
3467         int status;
3468
3469         xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3470         if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3471                 goto out;
3472         if ((status = decode_putfh(&xdr)) != 0)
3473                 goto out;
3474         if ((status = decode_savefh(&xdr)) != 0)
3475                 goto out;
3476         if ((status = decode_putfh(&xdr)) != 0)
3477                 goto out;
3478         status = decode_rename(&xdr, &res->old_cinfo, &res->new_cinfo);
3479 out:
3480         return status;
3481 }
3482
3483 /*
3484  * Decode LINK response
3485  */
3486 static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_change_info *cinfo)
3487 {
3488         struct xdr_stream xdr;
3489         struct compound_hdr hdr;
3490         int status;
3491
3492         xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3493         if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3494                 goto out;
3495         if ((status = decode_putfh(&xdr)) != 0)
3496                 goto out;
3497         if ((status = decode_savefh(&xdr)) != 0)
3498                 goto out;
3499         if ((status = decode_putfh(&xdr)) != 0)
3500                 goto out;
3501         status = decode_link(&xdr, cinfo);
3502 out:
3503         return status;
3504 }
3505
3506 /*
3507  * Decode CREATE response
3508  */
3509 static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_create_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_create(&xdr,&res->dir_cinfo)) != 0)
3521                 goto out;
3522         if ((status = decode_getfh(&xdr, res->fh)) != 0)
3523                 goto out;
3524         status = decode_getfattr(&xdr, res->fattr, res->server);
3525         if (status == NFS4ERR_DELAY)
3526                 status = 0;
3527 out:
3528         return status;
3529 }
3530
3531 /*
3532  * Decode SYMLINK response
3533  */
3534 static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_create_res *res)
3535 {
3536         return nfs4_xdr_dec_create(rqstp, p, res);
3537 }
3538
3539 /*
3540  * Decode GETATTR response
3541  */
3542 static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_getattr_res *res)
3543 {
3544         struct xdr_stream xdr;
3545         struct compound_hdr hdr;
3546         int status;
3547
3548         xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3549         status = decode_compound_hdr(&xdr, &hdr);
3550         if (status)
3551                 goto out;
3552         status = decode_putfh(&xdr);
3553         if (status)
3554                 goto out;
3555         status = decode_getfattr(&xdr, res->fattr, res->server);
3556 out:
3557         return status;
3558
3559 }
3560
3561 /*
3562  * Encode an SETACL request
3563  */
3564 static int
3565 nfs4_xdr_enc_setacl(struct rpc_rqst *req, uint32_t *p, struct nfs_setaclargs *args)
3566 {
3567         struct xdr_stream xdr;
3568         struct compound_hdr hdr = {
3569                 .nops   = 2,
3570         };
3571         int status;
3572
3573         xdr_init_encode(&xdr, &req->rq_snd_buf, p);
3574         encode_compound_hdr(&xdr, &hdr);
3575         status = encode_putfh(&xdr, args->fh);
3576         if (status)
3577                 goto out;
3578         status = encode_setacl(&xdr, args);
3579 out:
3580         return status;
3581 }
3582 /*
3583  * Decode SETACL response
3584  */
3585 static int
3586 nfs4_xdr_dec_setacl(struct rpc_rqst *rqstp, uint32_t *p, void *res)
3587 {
3588         struct xdr_stream xdr;
3589         struct compound_hdr hdr;
3590         int status;
3591
3592         xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3593         status = decode_compound_hdr(&xdr, &hdr);
3594         if (status)
3595                 goto out;
3596         status = decode_putfh(&xdr);
3597         if (status)
3598                 goto out;
3599         status = decode_setattr(&xdr, res);
3600 out:
3601         return status;
3602 }
3603
3604 /*
3605  * Decode GETACL response
3606  */
3607 static int
3608 nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, uint32_t *p, size_t *acl_len)
3609 {
3610         struct xdr_stream xdr;
3611         struct compound_hdr hdr;
3612         int status;
3613
3614         xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3615         status = decode_compound_hdr(&xdr, &hdr);
3616         if (status)
3617                 goto out;
3618         status = decode_putfh(&xdr);
3619         if (status)
3620                 goto out;
3621         status = decode_getacl(&xdr, rqstp, acl_len);
3622
3623 out:
3624         return status;
3625 }
3626
3627 /*
3628  * Decode CLOSE response
3629  */
3630 static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_closeres *res)
3631 {
3632         struct xdr_stream xdr;
3633         struct compound_hdr hdr;
3634         int status;
3635
3636         xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3637         status = decode_compound_hdr(&xdr, &hdr);
3638         if (status)
3639                 goto out;
3640         status = decode_putfh(&xdr);
3641         if (status)
3642                 goto out;
3643         status = decode_close(&xdr, res);
3644 out:
3645         return status;
3646 }
3647
3648 /*
3649  * Decode OPEN response
3650  */
3651 static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_openres *res)
3652 {
3653         struct xdr_stream xdr;
3654         struct compound_hdr hdr;
3655         int status;
3656
3657         xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3658         status = decode_compound_hdr(&xdr, &hdr);
3659         if (status)
3660                 goto out;
3661         status = decode_putfh(&xdr);
3662         if (status)
3663                 goto out;
3664         status = decode_open(&xdr, res);
3665         if (status)
3666                 goto out;
3667         status = decode_getfh(&xdr, &res->fh);
3668         if (status)
3669                 goto out;
3670         status = decode_getfattr(&xdr, res->f_attr, res->server);
3671         if (status == NFS4ERR_DELAY)
3672                 status = 0;
3673 out:
3674         return status;
3675 }
3676
3677 /*
3678  * Decode OPEN_CONFIRM response
3679  */
3680 static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_open_confirmres *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_open_confirm(&xdr, res);
3694 out:
3695         return status;
3696 }
3697
3698 /*
3699  * Decode OPEN response
3700  */
3701 static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_openres *res)
3702 {
3703         struct xdr_stream xdr;
3704         struct compound_hdr hdr;
3705         int status;
3706
3707         xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3708         status = decode_compound_hdr(&xdr, &hdr);
3709         if (status)
3710                 goto out;
3711         status = decode_putfh(&xdr);
3712         if (status)
3713                 goto out;
3714         status = decode_open(&xdr, res);
3715 out:
3716         return status;
3717 }
3718
3719 /*
3720  * Decode SETATTR response
3721  */
3722 static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_setattrres *res)
3723 {
3724         struct xdr_stream xdr;
3725         struct compound_hdr hdr;
3726         int status;
3727
3728         xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3729         status = decode_compound_hdr(&xdr, &hdr);
3730         if (status)
3731                 goto out;
3732         status = decode_putfh(&xdr);
3733         if (status)
3734                 goto out;
3735         status = decode_setattr(&xdr, res);
3736         if (status)
3737                 goto out;
3738         status = decode_getfattr(&xdr, res->fattr, res->server);
3739         if (status == NFS4ERR_DELAY)
3740                 status = 0;
3741 out:
3742         return status;
3743 }
3744
3745 /*
3746  * Decode LOCK response
3747  */
3748 static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_lockres *res)
3749 {
3750         struct xdr_stream xdr;
3751         struct compound_hdr hdr;
3752         int status;
3753
3754         xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3755         status = decode_compound_hdr(&xdr, &hdr);
3756         if (status)
3757                 goto out;
3758         status = decode_putfh(&xdr);
3759         if (status)
3760                 goto out;
3761         status = decode_lock(&xdr, res);
3762 out:
3763         return status;
3764 }
3765
3766 /*
3767  * Decode LOCKT response
3768  */
3769 static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_lockres *res)
3770 {
3771         struct xdr_stream xdr;
3772         struct compound_hdr hdr;
3773         int status;
3774
3775         xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3776         status = decode_compound_hdr(&xdr, &hdr);
3777         if (status)
3778                 goto out;
3779         status = decode_putfh(&xdr);
3780         if (status)
3781                 goto out;
3782         status = decode_lockt(&xdr, res);
3783 out:
3784         return status;
3785 }
3786
3787 /*
3788  * Decode LOCKU response
3789  */
3790 static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_lockres *res)
3791 {
3792         struct xdr_stream xdr;
3793         struct compound_hdr hdr;
3794         int status;
3795
3796         xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3797         status = decode_compound_hdr(&xdr, &hdr);
3798         if (status)
3799                 goto out;
3800         status = decode_putfh(&xdr);
3801         if (status)
3802                 goto out;
3803         status = decode_locku(&xdr, res);
3804 out:
3805         return status;
3806 }
3807
3808 /*
3809  * Decode READLINK response
3810  */
3811 static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp, uint32_t *p, void *res)
3812 {
3813         struct xdr_stream xdr;
3814         struct compound_hdr hdr;
3815         int status;
3816
3817         xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3818         status = decode_compound_hdr(&xdr, &hdr);
3819         if (status)
3820                 goto out;
3821         status = decode_putfh(&xdr);
3822         if (status)
3823                 goto out;
3824         status = decode_readlink(&xdr, rqstp);
3825 out:
3826         return status;
3827 }
3828
3829 /*
3830  * Decode READDIR response
3831  */
3832 static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_readdir_res *res)
3833 {
3834         struct xdr_stream xdr;
3835         struct compound_hdr hdr;
3836         int status;
3837
3838         xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3839         status = decode_compound_hdr(&xdr, &hdr);
3840         if (status)
3841                 goto out;
3842         status = decode_putfh(&xdr);
3843         if (status)
3844                 goto out;
3845         status = decode_readdir(&xdr, rqstp, res);
3846 out:
3847         return status;
3848 }
3849
3850 /*
3851  * Decode Read response
3852  */
3853 static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_readres *res)
3854 {
3855         struct xdr_stream xdr;
3856         struct compound_hdr hdr;
3857         int status;
3858
3859         xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3860         status = decode_compound_hdr(&xdr, &hdr);
3861         if (status)
3862                 goto out;
3863         status = decode_putfh(&xdr);
3864         if (status)
3865                 goto out;
3866         status = decode_read(&xdr, rqstp, res);
3867         if (!status)
3868                 status = res->count;
3869 out:
3870         return status;
3871 }
3872
3873 /*
3874  * Decode WRITE response
3875  */
3876 static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_writeres *res)
3877 {
3878         struct xdr_stream xdr;
3879         struct compound_hdr hdr;
3880         int status;
3881
3882         xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3883         status = decode_compound_hdr(&xdr, &hdr);
3884         if (status)
3885                 goto out;
3886         status = decode_putfh(&xdr);
3887         if (status)
3888                 goto out;
3889         status = decode_write(&xdr, res);
3890         if (!status)
3891                 status = res->count;
3892 out:
3893         return status;
3894 }
3895
3896 /*
3897  * Decode COMMIT response
3898  */
3899 static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_writeres *res)
3900 {
3901         struct xdr_stream xdr;
3902         struct compound_hdr hdr;
3903         int status;
3904
3905         xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3906         status = decode_compound_hdr(&xdr, &hdr);
3907         if (status)
3908                 goto out;
3909         status = decode_putfh(&xdr);
3910         if (status)
3911                 goto out;
3912         status = decode_commit(&xdr, res);
3913 out:
3914         return status;
3915 }
3916
3917 /*
3918  * FSINFO request
3919  */
3920 static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, uint32_t *p, struct nfs_fsinfo *fsinfo)
3921 {
3922         struct xdr_stream xdr;
3923         struct compound_hdr hdr;
3924         int status;
3925
3926         xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
3927         status = decode_compound_hdr(&xdr, &hdr);
3928         if (!status)
3929                 status = decode_putfh(&xdr);
3930         if (!status)
3931                 status = decode_fsinfo(&xdr, fsinfo);
3932         if (!status)
3933                 status = -nfs_stat_to_errno(hdr.status);
3934         return status;
3935 }
3936
3937 /*
3938  * PATHCONF request
3939  */
3940 static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, uint32_t *p, struct nfs_pathconf *pathconf)
3941 {
3942         struct xdr_stream xdr;
3943         struct compound_hdr hdr;
3944         int status;
3945
3946         xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
3947         status = decode_compound_hdr(&xdr, &hdr);
3948         if (!status)
3949                 status = decode_putfh(&xdr);
3950         if (!status)
3951                 status = decode_pathconf(&xdr, pathconf);
3952         return status;
3953 }
3954
3955 /*
3956  * STATFS request
3957  */
3958 static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, uint32_t *p, struct nfs_fsstat *fsstat)
3959 {
3960         struct xdr_stream xdr;
3961         struct compound_hdr hdr;
3962         int status;
3963
3964         xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
3965         status = decode_compound_hdr(&xdr, &hdr);
3966         if (!status)
3967                 status = decode_putfh(&xdr);
3968         if (!status)
3969                 status = decode_statfs(&xdr, fsstat);
3970         return status;
3971 }
3972
3973 /*
3974  * GETATTR_BITMAP request
3975  */
3976 static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req, uint32_t *p, struct nfs4_server_caps_res *res)
3977 {
3978         struct xdr_stream xdr;
3979         struct compound_hdr hdr;
3980         int status;
3981
3982         xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
3983         if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3984                 goto out;
3985         if ((status = decode_putfh(&xdr)) != 0)
3986                 goto out;
3987         status = decode_server_caps(&xdr, res);
3988 out:
3989         return status;
3990 }
3991
3992 /*
3993  * Decode RENEW response
3994  */
3995 static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, uint32_t *p, void *dummy)
3996 {
3997         struct xdr_stream xdr;
3998         struct compound_hdr hdr;
3999         int status;
4000
4001         xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4002         status = decode_compound_hdr(&xdr, &hdr);
4003         if (!status)
4004                 status = decode_renew(&xdr);
4005         return status;
4006 }
4007
4008 /*
4009  * a SETCLIENTID request
4010  */
4011 static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req, uint32_t *p,
4012                 struct nfs4_client *clp)
4013 {
4014         struct xdr_stream xdr;
4015         struct compound_hdr hdr;
4016         int status;
4017
4018         xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4019         status = decode_compound_hdr(&xdr, &hdr);
4020         if (!status)
4021                 status = decode_setclientid(&xdr, clp);
4022         if (!status)
4023                 status = -nfs_stat_to_errno(hdr.status);
4024         return status;
4025 }
4026
4027 /*
4028  * a SETCLIENTID_CONFIRM request
4029  */
4030 static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req, uint32_t *p, struct nfs_fsinfo *fsinfo)
4031 {
4032         struct xdr_stream xdr;
4033         struct compound_hdr hdr;
4034         int status;
4035
4036         xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4037         status = decode_compound_hdr(&xdr, &hdr);
4038         if (!status)
4039                 status = decode_setclientid_confirm(&xdr);
4040         if (!status)
4041                 status = decode_putrootfh(&xdr);
4042         if (!status)
4043                 status = decode_fsinfo(&xdr, fsinfo);
4044         if (!status)
4045                 status = -nfs_stat_to_errno(hdr.status);
4046         return status;
4047 }
4048
4049 /*
4050  * DELEGRETURN request
4051  */
4052 static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp, uint32_t *p, void *dummy)
4053 {
4054         struct xdr_stream xdr;
4055         struct compound_hdr hdr;
4056         int status;
4057
4058         xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4059         status = decode_compound_hdr(&xdr, &hdr);
4060         if (status == 0) {
4061                 status = decode_putfh(&xdr);
4062                 if (status == 0)
4063                         status = decode_delegreturn(&xdr);
4064         }
4065         return status;
4066 }
4067
4068 uint32_t *nfs4_decode_dirent(uint32_t *p, struct nfs_entry *entry, int plus)
4069 {
4070         uint32_t bitmap[2] = {0};
4071         uint32_t len;
4072
4073         if (!*p++) {
4074                 if (!*p)
4075                         return ERR_PTR(-EAGAIN);
4076                 entry->eof = 1;
4077                 return ERR_PTR(-EBADCOOKIE);
4078         }
4079
4080         entry->prev_cookie = entry->cookie;
4081         p = xdr_decode_hyper(p, &entry->cookie);
4082         entry->len = ntohl(*p++);
4083         entry->name = (const char *) p;
4084         p += XDR_QUADLEN(entry->len);
4085
4086         /*
4087          * In case the server doesn't return an inode number,
4088          * we fake one here.  (We don't use inode number 0,
4089          * since glibc seems to choke on it...)
4090          */
4091         entry->ino = 1;
4092
4093         len = ntohl(*p++);              /* bitmap length */
4094         if (len-- > 0) {
4095                 bitmap[0] = ntohl(*p++);
4096                 if (len-- > 0) {
4097                         bitmap[1] = ntohl(*p++);
4098                         p += len;
4099                 }
4100         }
4101         len = XDR_QUADLEN(ntohl(*p++)); /* attribute buffer length */
4102         if (len > 0) {
4103                 if (bitmap[0] & FATTR4_WORD0_RDATTR_ERROR) {
4104                         bitmap[0] &= ~FATTR4_WORD0_RDATTR_ERROR;
4105                         /* Ignore the return value of rdattr_error for now */
4106                         p++;
4107                         len--;
4108                 }
4109                 if (bitmap[0] == 0 && bitmap[1] == FATTR4_WORD1_MOUNTED_ON_FILEID)
4110                         xdr_decode_hyper(p, &entry->ino);
4111                 else if (bitmap[0] == FATTR4_WORD0_FILEID)
4112                         xdr_decode_hyper(p, &entry->ino);
4113                 p += len;
4114         }
4115
4116         entry->eof = !p[0] && p[1];
4117         return p;
4118 }
4119
4120 /*
4121  * We need to translate between nfs status return values and
4122  * the local errno values which may not be the same.
4123  */
4124 static struct {
4125         int stat;
4126         int errno;
4127 } nfs_errtbl[] = {
4128         { NFS4_OK,              0               },
4129         { NFS4ERR_PERM,         EPERM           },
4130         { NFS4ERR_NOENT,        ENOENT          },
4131         { NFS4ERR_IO,           errno_NFSERR_IO },
4132         { NFS4ERR_NXIO,         ENXIO           },
4133         { NFS4ERR_ACCESS,       EACCES          },
4134         { NFS4ERR_EXIST,        EEXIST          },
4135         { NFS4ERR_XDEV,         EXDEV           },
4136         { NFS4ERR_NOTDIR,       ENOTDIR         },
4137         { NFS4ERR_ISDIR,        EISDIR          },
4138         { NFS4ERR_INVAL,        EINVAL          },
4139         { NFS4ERR_FBIG,         EFBIG           },
4140         { NFS4ERR_NOSPC,        ENOSPC          },
4141         { NFS4ERR_ROFS,         EROFS           },
4142         { NFS4ERR_MLINK,        EMLINK          },
4143         { NFS4ERR_NAMETOOLONG,  ENAMETOOLONG    },
4144         { NFS4ERR_NOTEMPTY,     ENOTEMPTY       },
4145         { NFS4ERR_DQUOT,        EDQUOT          },
4146         { NFS4ERR_STALE,        ESTALE          },
4147         { NFS4ERR_BADHANDLE,    EBADHANDLE      },
4148         { NFS4ERR_BADOWNER,     EINVAL          },
4149         { NFS4ERR_BADNAME,      EINVAL          },
4150         { NFS4ERR_BAD_COOKIE,   EBADCOOKIE      },
4151         { NFS4ERR_NOTSUPP,      ENOTSUPP        },
4152         { NFS4ERR_TOOSMALL,     ETOOSMALL       },
4153         { NFS4ERR_SERVERFAULT,  ESERVERFAULT    },
4154         { NFS4ERR_BADTYPE,      EBADTYPE        },
4155         { NFS4ERR_LOCKED,       EAGAIN          },
4156         { NFS4ERR_RESOURCE,     EREMOTEIO       },
4157         { NFS4ERR_SYMLINK,      ELOOP           },
4158         { NFS4ERR_OP_ILLEGAL,   EOPNOTSUPP      },
4159         { NFS4ERR_DEADLOCK,     EDEADLK         },
4160         { NFS4ERR_WRONGSEC,     EPERM           }, /* FIXME: this needs
4161                                                     * to be handled by a
4162                                                     * middle-layer.
4163                                                     */
4164         { -1,                   EIO             }
4165 };
4166
4167 /*
4168  * Convert an NFS error code to a local one.
4169  * This one is used jointly by NFSv2 and NFSv3.
4170  */
4171 static int
4172 nfs_stat_to_errno(int stat)
4173 {
4174         int i;
4175         for (i = 0; nfs_errtbl[i].stat != -1; i++) {
4176                 if (nfs_errtbl[i].stat == stat)
4177                         return nfs_errtbl[i].errno;
4178         }
4179         if (stat <= 10000 || stat > 10100) {
4180                 /* The server is looney tunes. */
4181                 return ESERVERFAULT;
4182         }
4183         /* If we cannot translate the error, the recovery routines should
4184          * handle it.
4185          * Note: remaining NFSv4 error codes have values > 10000, so should
4186          * not conflict with native Linux error codes.
4187          */
4188         return stat;
4189 }
4190
4191 #ifndef MAX
4192 # define MAX(a, b)      (((a) > (b))? (a) : (b))
4193 #endif
4194
4195 #define PROC(proc, argtype, restype)                            \
4196 [NFSPROC4_CLNT_##proc] = {                                      \
4197         .p_proc   = NFSPROC4_COMPOUND,                          \
4198         .p_encode = (kxdrproc_t) nfs4_xdr_##argtype,            \
4199         .p_decode = (kxdrproc_t) nfs4_xdr_##restype,            \
4200         .p_bufsiz = MAX(NFS4_##argtype##_sz,NFS4_##restype##_sz) << 2,  \
4201     }
4202
4203 struct rpc_procinfo     nfs4_procedures[] = {
4204   PROC(READ,            enc_read,       dec_read),
4205   PROC(WRITE,           enc_write,      dec_write),
4206   PROC(COMMIT,          enc_commit,     dec_commit),
4207   PROC(OPEN,            enc_open,       dec_open),
4208   PROC(OPEN_CONFIRM,    enc_open_confirm,       dec_open_confirm),
4209   PROC(OPEN_NOATTR,     enc_open_noattr,        dec_open_noattr),
4210   PROC(OPEN_DOWNGRADE,  enc_open_downgrade,     dec_open_downgrade),
4211   PROC(CLOSE,           enc_close,      dec_close),
4212   PROC(SETATTR,         enc_setattr,    dec_setattr),
4213   PROC(FSINFO,          enc_fsinfo,     dec_fsinfo),
4214   PROC(RENEW,           enc_renew,      dec_renew),
4215   PROC(SETCLIENTID,     enc_setclientid,        dec_setclientid),
4216   PROC(SETCLIENTID_CONFIRM,     enc_setclientid_confirm,        dec_setclientid_confirm),
4217   PROC(LOCK,            enc_lock,       dec_lock),
4218   PROC(LOCKT,           enc_lockt,      dec_lockt),
4219   PROC(LOCKU,           enc_locku,      dec_locku),
4220   PROC(ACCESS,          enc_access,     dec_access),
4221   PROC(GETATTR,         enc_getattr,    dec_getattr),
4222   PROC(LOOKUP,          enc_lookup,     dec_lookup),
4223   PROC(LOOKUP_ROOT,     enc_lookup_root,        dec_lookup_root),
4224   PROC(REMOVE,          enc_remove,     dec_remove),
4225   PROC(RENAME,          enc_rename,     dec_rename),
4226   PROC(LINK,            enc_link,       dec_link),
4227   PROC(SYMLINK,         enc_symlink,    dec_symlink),
4228   PROC(CREATE,          enc_create,     dec_create),
4229   PROC(PATHCONF,        enc_pathconf,   dec_pathconf),
4230   PROC(STATFS,          enc_statfs,     dec_statfs),
4231   PROC(READLINK,        enc_readlink,   dec_readlink),
4232   PROC(READDIR,         enc_readdir,    dec_readdir),
4233   PROC(SERVER_CAPS,     enc_server_caps, dec_server_caps),
4234   PROC(DELEGRETURN,     enc_delegreturn, dec_delegreturn),
4235   PROC(GETACL,          enc_getacl,     dec_getacl),
4236   PROC(SETACL,          enc_setacl,     dec_setacl),
4237 };
4238
4239 struct rpc_version              nfs_version4 = {
4240         .number                 = 4,
4241         .nrprocs                = sizeof(nfs4_procedures)/sizeof(nfs4_procedures[0]),
4242         .procs                  = nfs4_procedures
4243 };
4244
4245 /*
4246  * Local variables:
4247  *  c-basic-offset: 8
4248  * End:
4249  */