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/errno.h> 43 #include <linux/string.h> 44 #include <linux/in.h> 45 #include <linux/pagemap.h> 46 #include <linux/proc_fs.h> 47 #include <linux/kdev_t.h> 48 #include <linux/sunrpc/clnt.h> 49 #include <linux/sunrpc/msg_prot.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 #include "internal.h" 56 57 #define NFSDBG_FACILITY NFSDBG_XDR 58 59 /* Mapping from NFS error code to "errno" error code. */ 60 #define errno_NFSERR_IO EIO 61 62 static int nfs4_stat_to_errno(int); 63 64 /* NFSv4 COMPOUND tags are only wanted for debugging purposes */ 65 #ifdef DEBUG 66 #define NFS4_MAXTAGLEN 20 67 #else 68 #define NFS4_MAXTAGLEN 0 69 #endif 70 71 /* lock,open owner id: 72 * we currently use size 2 (u64) out of (NFS4_OPAQUE_LIMIT >> 2) 73 */ 74 #define open_owner_id_maxsz (1 + 4) 75 #define lock_owner_id_maxsz (1 + 4) 76 #define decode_lockowner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ)) 77 #define compound_encode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2)) 78 #define compound_decode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2)) 79 #define op_encode_hdr_maxsz (1) 80 #define op_decode_hdr_maxsz (2) 81 #define encode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE)) 82 #define decode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE)) 83 #define encode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE)) 84 #define decode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE)) 85 #define encode_putfh_maxsz (op_encode_hdr_maxsz + 1 + \ 86 (NFS4_FHSIZE >> 2)) 87 #define decode_putfh_maxsz (op_decode_hdr_maxsz) 88 #define encode_putrootfh_maxsz (op_encode_hdr_maxsz) 89 #define decode_putrootfh_maxsz (op_decode_hdr_maxsz) 90 #define encode_getfh_maxsz (op_encode_hdr_maxsz) 91 #define decode_getfh_maxsz (op_decode_hdr_maxsz + 1 + \ 92 ((3+NFS4_FHSIZE) >> 2)) 93 #define nfs4_fattr_bitmap_maxsz 3 94 #define encode_getattr_maxsz (op_encode_hdr_maxsz + nfs4_fattr_bitmap_maxsz) 95 #define nfs4_name_maxsz (1 + ((3 + NFS4_MAXNAMLEN) >> 2)) 96 #define nfs4_path_maxsz (1 + ((3 + NFS4_MAXPATHLEN) >> 2)) 97 #define nfs4_owner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ)) 98 #define nfs4_group_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ)) 99 /* This is based on getfattr, which uses the most attributes: */ 100 #define nfs4_fattr_value_maxsz (1 + (1 + 2 + 2 + 4 + 2 + 1 + 1 + 2 + 2 + \ 101 3 + 3 + 3 + nfs4_owner_maxsz + nfs4_group_maxsz)) 102 #define nfs4_fattr_maxsz (nfs4_fattr_bitmap_maxsz + \ 103 nfs4_fattr_value_maxsz) 104 #define decode_getattr_maxsz (op_decode_hdr_maxsz + nfs4_fattr_maxsz) 105 #define encode_attrs_maxsz (nfs4_fattr_bitmap_maxsz + \ 106 1 + 2 + 1 + \ 107 nfs4_owner_maxsz + \ 108 nfs4_group_maxsz + \ 109 4 + 4) 110 #define encode_savefh_maxsz (op_encode_hdr_maxsz) 111 #define decode_savefh_maxsz (op_decode_hdr_maxsz) 112 #define encode_restorefh_maxsz (op_encode_hdr_maxsz) 113 #define decode_restorefh_maxsz (op_decode_hdr_maxsz) 114 #define encode_fsinfo_maxsz (encode_getattr_maxsz) 115 #define decode_fsinfo_maxsz (op_decode_hdr_maxsz + 11) 116 #define encode_renew_maxsz (op_encode_hdr_maxsz + 3) 117 #define decode_renew_maxsz (op_decode_hdr_maxsz) 118 #define encode_setclientid_maxsz \ 119 (op_encode_hdr_maxsz + \ 120 XDR_QUADLEN(NFS4_VERIFIER_SIZE) + \ 121 XDR_QUADLEN(NFS4_SETCLIENTID_NAMELEN) + \ 122 1 /* sc_prog */ + \ 123 XDR_QUADLEN(RPCBIND_MAXNETIDLEN) + \ 124 XDR_QUADLEN(RPCBIND_MAXUADDRLEN) + \ 125 1) /* sc_cb_ident */ 126 #define decode_setclientid_maxsz \ 127 (op_decode_hdr_maxsz + \ 128 2 + \ 129 1024) /* large value for CLID_INUSE */ 130 #define encode_setclientid_confirm_maxsz \ 131 (op_encode_hdr_maxsz + \ 132 3 + (NFS4_VERIFIER_SIZE >> 2)) 133 #define decode_setclientid_confirm_maxsz \ 134 (op_decode_hdr_maxsz) 135 #define encode_lookup_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz) 136 #define decode_lookup_maxsz (op_decode_hdr_maxsz) 137 #define encode_share_access_maxsz \ 138 (2) 139 #define encode_createmode_maxsz (1 + encode_attrs_maxsz + encode_verifier_maxsz) 140 #define encode_opentype_maxsz (1 + encode_createmode_maxsz) 141 #define encode_claim_null_maxsz (1 + nfs4_name_maxsz) 142 #define encode_open_maxsz (op_encode_hdr_maxsz + \ 143 2 + encode_share_access_maxsz + 2 + \ 144 open_owner_id_maxsz + \ 145 encode_opentype_maxsz + \ 146 encode_claim_null_maxsz) 147 #define decode_ace_maxsz (3 + nfs4_owner_maxsz) 148 #define decode_delegation_maxsz (1 + decode_stateid_maxsz + 1 + \ 149 decode_ace_maxsz) 150 #define decode_change_info_maxsz (5) 151 #define decode_open_maxsz (op_decode_hdr_maxsz + \ 152 decode_stateid_maxsz + \ 153 decode_change_info_maxsz + 1 + \ 154 nfs4_fattr_bitmap_maxsz + \ 155 decode_delegation_maxsz) 156 #define encode_open_confirm_maxsz \ 157 (op_encode_hdr_maxsz + \ 158 encode_stateid_maxsz + 1) 159 #define decode_open_confirm_maxsz \ 160 (op_decode_hdr_maxsz + \ 161 decode_stateid_maxsz) 162 #define encode_open_downgrade_maxsz \ 163 (op_encode_hdr_maxsz + \ 164 encode_stateid_maxsz + 1 + \ 165 encode_share_access_maxsz) 166 #define decode_open_downgrade_maxsz \ 167 (op_decode_hdr_maxsz + \ 168 decode_stateid_maxsz) 169 #define encode_close_maxsz (op_encode_hdr_maxsz + \ 170 1 + encode_stateid_maxsz) 171 #define decode_close_maxsz (op_decode_hdr_maxsz + \ 172 decode_stateid_maxsz) 173 #define encode_setattr_maxsz (op_encode_hdr_maxsz + \ 174 encode_stateid_maxsz + \ 175 encode_attrs_maxsz) 176 #define decode_setattr_maxsz (op_decode_hdr_maxsz + \ 177 nfs4_fattr_bitmap_maxsz) 178 #define encode_read_maxsz (op_encode_hdr_maxsz + \ 179 encode_stateid_maxsz + 3) 180 #define decode_read_maxsz (op_decode_hdr_maxsz + 2) 181 #define encode_readdir_maxsz (op_encode_hdr_maxsz + \ 182 2 + encode_verifier_maxsz + 5) 183 #define decode_readdir_maxsz (op_decode_hdr_maxsz + \ 184 decode_verifier_maxsz) 185 #define encode_readlink_maxsz (op_encode_hdr_maxsz) 186 #define decode_readlink_maxsz (op_decode_hdr_maxsz + 1) 187 #define encode_write_maxsz (op_encode_hdr_maxsz + \ 188 encode_stateid_maxsz + 4) 189 #define decode_write_maxsz (op_decode_hdr_maxsz + \ 190 2 + decode_verifier_maxsz) 191 #define encode_commit_maxsz (op_encode_hdr_maxsz + 3) 192 #define decode_commit_maxsz (op_decode_hdr_maxsz + \ 193 decode_verifier_maxsz) 194 #define encode_remove_maxsz (op_encode_hdr_maxsz + \ 195 nfs4_name_maxsz) 196 #define decode_remove_maxsz (op_decode_hdr_maxsz + \ 197 decode_change_info_maxsz) 198 #define encode_rename_maxsz (op_encode_hdr_maxsz + \ 199 2 * nfs4_name_maxsz) 200 #define decode_rename_maxsz (op_decode_hdr_maxsz + \ 201 decode_change_info_maxsz + \ 202 decode_change_info_maxsz) 203 #define encode_link_maxsz (op_encode_hdr_maxsz + \ 204 nfs4_name_maxsz) 205 #define decode_link_maxsz (op_decode_hdr_maxsz + decode_change_info_maxsz) 206 #define encode_lock_maxsz (op_encode_hdr_maxsz + \ 207 7 + \ 208 1 + encode_stateid_maxsz + 8) 209 #define decode_lock_denied_maxsz \ 210 (8 + decode_lockowner_maxsz) 211 #define decode_lock_maxsz (op_decode_hdr_maxsz + \ 212 decode_lock_denied_maxsz) 213 #define encode_lockt_maxsz (op_encode_hdr_maxsz + 12) 214 #define decode_lockt_maxsz (op_decode_hdr_maxsz + \ 215 decode_lock_denied_maxsz) 216 #define encode_locku_maxsz (op_encode_hdr_maxsz + 3 + \ 217 encode_stateid_maxsz + \ 218 4) 219 #define decode_locku_maxsz (op_decode_hdr_maxsz + \ 220 decode_stateid_maxsz) 221 #define encode_access_maxsz (op_encode_hdr_maxsz + 1) 222 #define decode_access_maxsz (op_decode_hdr_maxsz + 2) 223 #define encode_symlink_maxsz (op_encode_hdr_maxsz + \ 224 1 + nfs4_name_maxsz + \ 225 1 + \ 226 nfs4_fattr_maxsz) 227 #define decode_symlink_maxsz (op_decode_hdr_maxsz + 8) 228 #define encode_create_maxsz (op_encode_hdr_maxsz + \ 229 1 + 2 + nfs4_name_maxsz + \ 230 encode_attrs_maxsz) 231 #define decode_create_maxsz (op_decode_hdr_maxsz + \ 232 decode_change_info_maxsz + \ 233 nfs4_fattr_bitmap_maxsz) 234 #define encode_statfs_maxsz (encode_getattr_maxsz) 235 #define decode_statfs_maxsz (decode_getattr_maxsz) 236 #define encode_delegreturn_maxsz (op_encode_hdr_maxsz + 4) 237 #define decode_delegreturn_maxsz (op_decode_hdr_maxsz) 238 #define encode_getacl_maxsz (encode_getattr_maxsz) 239 #define decode_getacl_maxsz (op_decode_hdr_maxsz + \ 240 nfs4_fattr_bitmap_maxsz + 1) 241 #define encode_setacl_maxsz (op_encode_hdr_maxsz + \ 242 encode_stateid_maxsz + 3) 243 #define decode_setacl_maxsz (decode_setattr_maxsz) 244 #define encode_fs_locations_maxsz \ 245 (encode_getattr_maxsz) 246 #define decode_fs_locations_maxsz \ 247 (0) 248 249 #if defined(CONFIG_NFS_V4_1) 250 #define NFS4_MAX_MACHINE_NAME_LEN (64) 251 252 #define encode_exchange_id_maxsz (op_encode_hdr_maxsz + \ 253 encode_verifier_maxsz + \ 254 1 /* co_ownerid.len */ + \ 255 XDR_QUADLEN(NFS4_EXCHANGE_ID_LEN) + \ 256 1 /* flags */ + \ 257 1 /* spa_how */ + \ 258 0 /* SP4_NONE (for now) */ + \ 259 1 /* zero implemetation id array */) 260 #define decode_exchange_id_maxsz (op_decode_hdr_maxsz + \ 261 2 /* eir_clientid */ + \ 262 1 /* eir_sequenceid */ + \ 263 1 /* eir_flags */ + \ 264 1 /* spr_how */ + \ 265 0 /* SP4_NONE (for now) */ + \ 266 2 /* eir_server_owner.so_minor_id */ + \ 267 /* eir_server_owner.so_major_id<> */ \ 268 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \ 269 /* eir_server_scope<> */ \ 270 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \ 271 1 /* eir_server_impl_id array length */ + \ 272 0 /* ignored eir_server_impl_id contents */) 273 #define encode_channel_attrs_maxsz (6 + 1 /* ca_rdma_ird.len (0) */) 274 #define decode_channel_attrs_maxsz (6 + \ 275 1 /* ca_rdma_ird.len */ + \ 276 1 /* ca_rdma_ird */) 277 #define encode_create_session_maxsz (op_encode_hdr_maxsz + \ 278 2 /* csa_clientid */ + \ 279 1 /* csa_sequence */ + \ 280 1 /* csa_flags */ + \ 281 encode_channel_attrs_maxsz + \ 282 encode_channel_attrs_maxsz + \ 283 1 /* csa_cb_program */ + \ 284 1 /* csa_sec_parms.len (1) */ + \ 285 1 /* cb_secflavor (AUTH_SYS) */ + \ 286 1 /* stamp */ + \ 287 1 /* machinename.len */ + \ 288 XDR_QUADLEN(NFS4_MAX_MACHINE_NAME_LEN) + \ 289 1 /* uid */ + \ 290 1 /* gid */ + \ 291 1 /* gids.len (0) */) 292 #define decode_create_session_maxsz (op_decode_hdr_maxsz + \ 293 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \ 294 1 /* csr_sequence */ + \ 295 1 /* csr_flags */ + \ 296 decode_channel_attrs_maxsz + \ 297 decode_channel_attrs_maxsz) 298 #define encode_destroy_session_maxsz (op_encode_hdr_maxsz + 4) 299 #define decode_destroy_session_maxsz (op_decode_hdr_maxsz) 300 #define encode_sequence_maxsz (op_encode_hdr_maxsz + \ 301 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 4) 302 #define decode_sequence_maxsz (op_decode_hdr_maxsz + \ 303 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 5) 304 #define encode_reclaim_complete_maxsz (op_encode_hdr_maxsz + 4) 305 #define decode_reclaim_complete_maxsz (op_decode_hdr_maxsz + 4) 306 #else /* CONFIG_NFS_V4_1 */ 307 #define encode_sequence_maxsz 0 308 #define decode_sequence_maxsz 0 309 #endif /* CONFIG_NFS_V4_1 */ 310 311 #define NFS4_enc_compound_sz (1024) /* XXX: large enough? */ 312 #define NFS4_dec_compound_sz (1024) /* XXX: large enough? */ 313 #define NFS4_enc_read_sz (compound_encode_hdr_maxsz + \ 314 encode_sequence_maxsz + \ 315 encode_putfh_maxsz + \ 316 encode_read_maxsz) 317 #define NFS4_dec_read_sz (compound_decode_hdr_maxsz + \ 318 decode_sequence_maxsz + \ 319 decode_putfh_maxsz + \ 320 decode_read_maxsz) 321 #define NFS4_enc_readlink_sz (compound_encode_hdr_maxsz + \ 322 encode_sequence_maxsz + \ 323 encode_putfh_maxsz + \ 324 encode_readlink_maxsz) 325 #define NFS4_dec_readlink_sz (compound_decode_hdr_maxsz + \ 326 decode_sequence_maxsz + \ 327 decode_putfh_maxsz + \ 328 decode_readlink_maxsz) 329 #define NFS4_enc_readdir_sz (compound_encode_hdr_maxsz + \ 330 encode_sequence_maxsz + \ 331 encode_putfh_maxsz + \ 332 encode_readdir_maxsz) 333 #define NFS4_dec_readdir_sz (compound_decode_hdr_maxsz + \ 334 decode_sequence_maxsz + \ 335 decode_putfh_maxsz + \ 336 decode_readdir_maxsz) 337 #define NFS4_enc_write_sz (compound_encode_hdr_maxsz + \ 338 encode_sequence_maxsz + \ 339 encode_putfh_maxsz + \ 340 encode_write_maxsz + \ 341 encode_getattr_maxsz) 342 #define NFS4_dec_write_sz (compound_decode_hdr_maxsz + \ 343 decode_sequence_maxsz + \ 344 decode_putfh_maxsz + \ 345 decode_write_maxsz + \ 346 decode_getattr_maxsz) 347 #define NFS4_enc_commit_sz (compound_encode_hdr_maxsz + \ 348 encode_sequence_maxsz + \ 349 encode_putfh_maxsz + \ 350 encode_commit_maxsz + \ 351 encode_getattr_maxsz) 352 #define NFS4_dec_commit_sz (compound_decode_hdr_maxsz + \ 353 decode_sequence_maxsz + \ 354 decode_putfh_maxsz + \ 355 decode_commit_maxsz + \ 356 decode_getattr_maxsz) 357 #define NFS4_enc_open_sz (compound_encode_hdr_maxsz + \ 358 encode_sequence_maxsz + \ 359 encode_putfh_maxsz + \ 360 encode_savefh_maxsz + \ 361 encode_open_maxsz + \ 362 encode_getfh_maxsz + \ 363 encode_getattr_maxsz + \ 364 encode_restorefh_maxsz + \ 365 encode_getattr_maxsz) 366 #define NFS4_dec_open_sz (compound_decode_hdr_maxsz + \ 367 decode_sequence_maxsz + \ 368 decode_putfh_maxsz + \ 369 decode_savefh_maxsz + \ 370 decode_open_maxsz + \ 371 decode_getfh_maxsz + \ 372 decode_getattr_maxsz + \ 373 decode_restorefh_maxsz + \ 374 decode_getattr_maxsz) 375 #define NFS4_enc_open_confirm_sz \ 376 (compound_encode_hdr_maxsz + \ 377 encode_putfh_maxsz + \ 378 encode_open_confirm_maxsz) 379 #define NFS4_dec_open_confirm_sz \ 380 (compound_decode_hdr_maxsz + \ 381 decode_putfh_maxsz + \ 382 decode_open_confirm_maxsz) 383 #define NFS4_enc_open_noattr_sz (compound_encode_hdr_maxsz + \ 384 encode_sequence_maxsz + \ 385 encode_putfh_maxsz + \ 386 encode_open_maxsz + \ 387 encode_getattr_maxsz) 388 #define NFS4_dec_open_noattr_sz (compound_decode_hdr_maxsz + \ 389 decode_sequence_maxsz + \ 390 decode_putfh_maxsz + \ 391 decode_open_maxsz + \ 392 decode_getattr_maxsz) 393 #define NFS4_enc_open_downgrade_sz \ 394 (compound_encode_hdr_maxsz + \ 395 encode_sequence_maxsz + \ 396 encode_putfh_maxsz + \ 397 encode_open_downgrade_maxsz + \ 398 encode_getattr_maxsz) 399 #define NFS4_dec_open_downgrade_sz \ 400 (compound_decode_hdr_maxsz + \ 401 decode_sequence_maxsz + \ 402 decode_putfh_maxsz + \ 403 decode_open_downgrade_maxsz + \ 404 decode_getattr_maxsz) 405 #define NFS4_enc_close_sz (compound_encode_hdr_maxsz + \ 406 encode_sequence_maxsz + \ 407 encode_putfh_maxsz + \ 408 encode_close_maxsz + \ 409 encode_getattr_maxsz) 410 #define NFS4_dec_close_sz (compound_decode_hdr_maxsz + \ 411 decode_sequence_maxsz + \ 412 decode_putfh_maxsz + \ 413 decode_close_maxsz + \ 414 decode_getattr_maxsz) 415 #define NFS4_enc_setattr_sz (compound_encode_hdr_maxsz + \ 416 encode_sequence_maxsz + \ 417 encode_putfh_maxsz + \ 418 encode_setattr_maxsz + \ 419 encode_getattr_maxsz) 420 #define NFS4_dec_setattr_sz (compound_decode_hdr_maxsz + \ 421 decode_sequence_maxsz + \ 422 decode_putfh_maxsz + \ 423 decode_setattr_maxsz + \ 424 decode_getattr_maxsz) 425 #define NFS4_enc_fsinfo_sz (compound_encode_hdr_maxsz + \ 426 encode_sequence_maxsz + \ 427 encode_putfh_maxsz + \ 428 encode_fsinfo_maxsz) 429 #define NFS4_dec_fsinfo_sz (compound_decode_hdr_maxsz + \ 430 decode_sequence_maxsz + \ 431 decode_putfh_maxsz + \ 432 decode_fsinfo_maxsz) 433 #define NFS4_enc_renew_sz (compound_encode_hdr_maxsz + \ 434 encode_renew_maxsz) 435 #define NFS4_dec_renew_sz (compound_decode_hdr_maxsz + \ 436 decode_renew_maxsz) 437 #define NFS4_enc_setclientid_sz (compound_encode_hdr_maxsz + \ 438 encode_setclientid_maxsz) 439 #define NFS4_dec_setclientid_sz (compound_decode_hdr_maxsz + \ 440 decode_setclientid_maxsz) 441 #define NFS4_enc_setclientid_confirm_sz \ 442 (compound_encode_hdr_maxsz + \ 443 encode_setclientid_confirm_maxsz + \ 444 encode_putrootfh_maxsz + \ 445 encode_fsinfo_maxsz) 446 #define NFS4_dec_setclientid_confirm_sz \ 447 (compound_decode_hdr_maxsz + \ 448 decode_setclientid_confirm_maxsz + \ 449 decode_putrootfh_maxsz + \ 450 decode_fsinfo_maxsz) 451 #define NFS4_enc_lock_sz (compound_encode_hdr_maxsz + \ 452 encode_sequence_maxsz + \ 453 encode_putfh_maxsz + \ 454 encode_lock_maxsz) 455 #define NFS4_dec_lock_sz (compound_decode_hdr_maxsz + \ 456 decode_sequence_maxsz + \ 457 decode_putfh_maxsz + \ 458 decode_lock_maxsz) 459 #define NFS4_enc_lockt_sz (compound_encode_hdr_maxsz + \ 460 encode_sequence_maxsz + \ 461 encode_putfh_maxsz + \ 462 encode_lockt_maxsz) 463 #define NFS4_dec_lockt_sz (compound_decode_hdr_maxsz + \ 464 decode_sequence_maxsz + \ 465 decode_putfh_maxsz + \ 466 decode_lockt_maxsz) 467 #define NFS4_enc_locku_sz (compound_encode_hdr_maxsz + \ 468 encode_sequence_maxsz + \ 469 encode_putfh_maxsz + \ 470 encode_locku_maxsz) 471 #define NFS4_dec_locku_sz (compound_decode_hdr_maxsz + \ 472 decode_sequence_maxsz + \ 473 decode_putfh_maxsz + \ 474 decode_locku_maxsz) 475 #define NFS4_enc_access_sz (compound_encode_hdr_maxsz + \ 476 encode_sequence_maxsz + \ 477 encode_putfh_maxsz + \ 478 encode_access_maxsz + \ 479 encode_getattr_maxsz) 480 #define NFS4_dec_access_sz (compound_decode_hdr_maxsz + \ 481 decode_sequence_maxsz + \ 482 decode_putfh_maxsz + \ 483 decode_access_maxsz + \ 484 decode_getattr_maxsz) 485 #define NFS4_enc_getattr_sz (compound_encode_hdr_maxsz + \ 486 encode_sequence_maxsz + \ 487 encode_putfh_maxsz + \ 488 encode_getattr_maxsz) 489 #define NFS4_dec_getattr_sz (compound_decode_hdr_maxsz + \ 490 decode_sequence_maxsz + \ 491 decode_putfh_maxsz + \ 492 decode_getattr_maxsz) 493 #define NFS4_enc_lookup_sz (compound_encode_hdr_maxsz + \ 494 encode_sequence_maxsz + \ 495 encode_putfh_maxsz + \ 496 encode_lookup_maxsz + \ 497 encode_getattr_maxsz + \ 498 encode_getfh_maxsz) 499 #define NFS4_dec_lookup_sz (compound_decode_hdr_maxsz + \ 500 decode_sequence_maxsz + \ 501 decode_putfh_maxsz + \ 502 decode_lookup_maxsz + \ 503 decode_getattr_maxsz + \ 504 decode_getfh_maxsz) 505 #define NFS4_enc_lookup_root_sz (compound_encode_hdr_maxsz + \ 506 encode_sequence_maxsz + \ 507 encode_putrootfh_maxsz + \ 508 encode_getattr_maxsz + \ 509 encode_getfh_maxsz) 510 #define NFS4_dec_lookup_root_sz (compound_decode_hdr_maxsz + \ 511 decode_sequence_maxsz + \ 512 decode_putrootfh_maxsz + \ 513 decode_getattr_maxsz + \ 514 decode_getfh_maxsz) 515 #define NFS4_enc_remove_sz (compound_encode_hdr_maxsz + \ 516 encode_sequence_maxsz + \ 517 encode_putfh_maxsz + \ 518 encode_remove_maxsz + \ 519 encode_getattr_maxsz) 520 #define NFS4_dec_remove_sz (compound_decode_hdr_maxsz + \ 521 decode_sequence_maxsz + \ 522 decode_putfh_maxsz + \ 523 decode_remove_maxsz + \ 524 decode_getattr_maxsz) 525 #define NFS4_enc_rename_sz (compound_encode_hdr_maxsz + \ 526 encode_sequence_maxsz + \ 527 encode_putfh_maxsz + \ 528 encode_savefh_maxsz + \ 529 encode_putfh_maxsz + \ 530 encode_rename_maxsz + \ 531 encode_getattr_maxsz + \ 532 encode_restorefh_maxsz + \ 533 encode_getattr_maxsz) 534 #define NFS4_dec_rename_sz (compound_decode_hdr_maxsz + \ 535 decode_sequence_maxsz + \ 536 decode_putfh_maxsz + \ 537 decode_savefh_maxsz + \ 538 decode_putfh_maxsz + \ 539 decode_rename_maxsz + \ 540 decode_getattr_maxsz + \ 541 decode_restorefh_maxsz + \ 542 decode_getattr_maxsz) 543 #define NFS4_enc_link_sz (compound_encode_hdr_maxsz + \ 544 encode_sequence_maxsz + \ 545 encode_putfh_maxsz + \ 546 encode_savefh_maxsz + \ 547 encode_putfh_maxsz + \ 548 encode_link_maxsz + \ 549 decode_getattr_maxsz + \ 550 encode_restorefh_maxsz + \ 551 decode_getattr_maxsz) 552 #define NFS4_dec_link_sz (compound_decode_hdr_maxsz + \ 553 decode_sequence_maxsz + \ 554 decode_putfh_maxsz + \ 555 decode_savefh_maxsz + \ 556 decode_putfh_maxsz + \ 557 decode_link_maxsz + \ 558 decode_getattr_maxsz + \ 559 decode_restorefh_maxsz + \ 560 decode_getattr_maxsz) 561 #define NFS4_enc_symlink_sz (compound_encode_hdr_maxsz + \ 562 encode_sequence_maxsz + \ 563 encode_putfh_maxsz + \ 564 encode_symlink_maxsz + \ 565 encode_getattr_maxsz + \ 566 encode_getfh_maxsz) 567 #define NFS4_dec_symlink_sz (compound_decode_hdr_maxsz + \ 568 decode_sequence_maxsz + \ 569 decode_putfh_maxsz + \ 570 decode_symlink_maxsz + \ 571 decode_getattr_maxsz + \ 572 decode_getfh_maxsz) 573 #define NFS4_enc_create_sz (compound_encode_hdr_maxsz + \ 574 encode_sequence_maxsz + \ 575 encode_putfh_maxsz + \ 576 encode_savefh_maxsz + \ 577 encode_create_maxsz + \ 578 encode_getfh_maxsz + \ 579 encode_getattr_maxsz + \ 580 encode_restorefh_maxsz + \ 581 encode_getattr_maxsz) 582 #define NFS4_dec_create_sz (compound_decode_hdr_maxsz + \ 583 decode_sequence_maxsz + \ 584 decode_putfh_maxsz + \ 585 decode_savefh_maxsz + \ 586 decode_create_maxsz + \ 587 decode_getfh_maxsz + \ 588 decode_getattr_maxsz + \ 589 decode_restorefh_maxsz + \ 590 decode_getattr_maxsz) 591 #define NFS4_enc_pathconf_sz (compound_encode_hdr_maxsz + \ 592 encode_sequence_maxsz + \ 593 encode_putfh_maxsz + \ 594 encode_getattr_maxsz) 595 #define NFS4_dec_pathconf_sz (compound_decode_hdr_maxsz + \ 596 decode_sequence_maxsz + \ 597 decode_putfh_maxsz + \ 598 decode_getattr_maxsz) 599 #define NFS4_enc_statfs_sz (compound_encode_hdr_maxsz + \ 600 encode_sequence_maxsz + \ 601 encode_putfh_maxsz + \ 602 encode_statfs_maxsz) 603 #define NFS4_dec_statfs_sz (compound_decode_hdr_maxsz + \ 604 decode_sequence_maxsz + \ 605 decode_putfh_maxsz + \ 606 decode_statfs_maxsz) 607 #define NFS4_enc_server_caps_sz (compound_encode_hdr_maxsz + \ 608 encode_sequence_maxsz + \ 609 encode_putfh_maxsz + \ 610 encode_getattr_maxsz) 611 #define NFS4_dec_server_caps_sz (compound_decode_hdr_maxsz + \ 612 decode_sequence_maxsz + \ 613 decode_putfh_maxsz + \ 614 decode_getattr_maxsz) 615 #define NFS4_enc_delegreturn_sz (compound_encode_hdr_maxsz + \ 616 encode_sequence_maxsz + \ 617 encode_putfh_maxsz + \ 618 encode_delegreturn_maxsz + \ 619 encode_getattr_maxsz) 620 #define NFS4_dec_delegreturn_sz (compound_decode_hdr_maxsz + \ 621 decode_sequence_maxsz + \ 622 decode_delegreturn_maxsz + \ 623 decode_getattr_maxsz) 624 #define NFS4_enc_getacl_sz (compound_encode_hdr_maxsz + \ 625 encode_sequence_maxsz + \ 626 encode_putfh_maxsz + \ 627 encode_getacl_maxsz) 628 #define NFS4_dec_getacl_sz (compound_decode_hdr_maxsz + \ 629 decode_sequence_maxsz + \ 630 decode_putfh_maxsz + \ 631 decode_getacl_maxsz) 632 #define NFS4_enc_setacl_sz (compound_encode_hdr_maxsz + \ 633 encode_sequence_maxsz + \ 634 encode_putfh_maxsz + \ 635 encode_setacl_maxsz) 636 #define NFS4_dec_setacl_sz (compound_decode_hdr_maxsz + \ 637 decode_sequence_maxsz + \ 638 decode_putfh_maxsz + \ 639 decode_setacl_maxsz) 640 #define NFS4_enc_fs_locations_sz \ 641 (compound_encode_hdr_maxsz + \ 642 encode_sequence_maxsz + \ 643 encode_putfh_maxsz + \ 644 encode_lookup_maxsz + \ 645 encode_fs_locations_maxsz) 646 #define NFS4_dec_fs_locations_sz \ 647 (compound_decode_hdr_maxsz + \ 648 decode_sequence_maxsz + \ 649 decode_putfh_maxsz + \ 650 decode_lookup_maxsz + \ 651 decode_fs_locations_maxsz) 652 #if defined(CONFIG_NFS_V4_1) 653 #define NFS4_enc_exchange_id_sz \ 654 (compound_encode_hdr_maxsz + \ 655 encode_exchange_id_maxsz) 656 #define NFS4_dec_exchange_id_sz \ 657 (compound_decode_hdr_maxsz + \ 658 decode_exchange_id_maxsz) 659 #define NFS4_enc_create_session_sz \ 660 (compound_encode_hdr_maxsz + \ 661 encode_create_session_maxsz) 662 #define NFS4_dec_create_session_sz \ 663 (compound_decode_hdr_maxsz + \ 664 decode_create_session_maxsz) 665 #define NFS4_enc_destroy_session_sz (compound_encode_hdr_maxsz + \ 666 encode_destroy_session_maxsz) 667 #define NFS4_dec_destroy_session_sz (compound_decode_hdr_maxsz + \ 668 decode_destroy_session_maxsz) 669 #define NFS4_enc_sequence_sz \ 670 (compound_decode_hdr_maxsz + \ 671 encode_sequence_maxsz) 672 #define NFS4_dec_sequence_sz \ 673 (compound_decode_hdr_maxsz + \ 674 decode_sequence_maxsz) 675 #define NFS4_enc_get_lease_time_sz (compound_encode_hdr_maxsz + \ 676 encode_sequence_maxsz + \ 677 encode_putrootfh_maxsz + \ 678 encode_fsinfo_maxsz) 679 #define NFS4_dec_get_lease_time_sz (compound_decode_hdr_maxsz + \ 680 decode_sequence_maxsz + \ 681 decode_putrootfh_maxsz + \ 682 decode_fsinfo_maxsz) 683 #define NFS4_enc_reclaim_complete_sz (compound_encode_hdr_maxsz + \ 684 encode_sequence_maxsz + \ 685 encode_reclaim_complete_maxsz) 686 #define NFS4_dec_reclaim_complete_sz (compound_decode_hdr_maxsz + \ 687 decode_sequence_maxsz + \ 688 decode_reclaim_complete_maxsz) 689 690 const u32 nfs41_maxwrite_overhead = ((RPC_MAX_HEADER_WITH_AUTH + 691 compound_encode_hdr_maxsz + 692 encode_sequence_maxsz + 693 encode_putfh_maxsz + 694 encode_getattr_maxsz) * 695 XDR_UNIT); 696 697 const u32 nfs41_maxread_overhead = ((RPC_MAX_HEADER_WITH_AUTH + 698 compound_decode_hdr_maxsz + 699 decode_sequence_maxsz + 700 decode_putfh_maxsz) * 701 XDR_UNIT); 702 #endif /* CONFIG_NFS_V4_1 */ 703 704 static const umode_t nfs_type2fmt[] = { 705 [NF4BAD] = 0, 706 [NF4REG] = S_IFREG, 707 [NF4DIR] = S_IFDIR, 708 [NF4BLK] = S_IFBLK, 709 [NF4CHR] = S_IFCHR, 710 [NF4LNK] = S_IFLNK, 711 [NF4SOCK] = S_IFSOCK, 712 [NF4FIFO] = S_IFIFO, 713 [NF4ATTRDIR] = 0, 714 [NF4NAMEDATTR] = 0, 715 }; 716 717 struct compound_hdr { 718 int32_t status; 719 uint32_t nops; 720 __be32 * nops_p; 721 uint32_t taglen; 722 char * tag; 723 uint32_t replen; /* expected reply words */ 724 u32 minorversion; 725 }; 726 727 static __be32 *reserve_space(struct xdr_stream *xdr, size_t nbytes) 728 { 729 __be32 *p = xdr_reserve_space(xdr, nbytes); 730 BUG_ON(!p); 731 return p; 732 } 733 734 static void encode_string(struct xdr_stream *xdr, unsigned int len, const char *str) 735 { 736 __be32 *p; 737 738 p = xdr_reserve_space(xdr, 4 + len); 739 BUG_ON(p == NULL); 740 xdr_encode_opaque(p, str, len); 741 } 742 743 static void encode_compound_hdr(struct xdr_stream *xdr, 744 struct rpc_rqst *req, 745 struct compound_hdr *hdr) 746 { 747 __be32 *p; 748 struct rpc_auth *auth = req->rq_task->tk_msg.rpc_cred->cr_auth; 749 750 /* initialize running count of expected bytes in reply. 751 * NOTE: the replied tag SHOULD be the same is the one sent, 752 * but this is not required as a MUST for the server to do so. */ 753 hdr->replen = RPC_REPHDRSIZE + auth->au_rslack + 3 + hdr->taglen; 754 755 dprintk("encode_compound: tag=%.*s\n", (int)hdr->taglen, hdr->tag); 756 BUG_ON(hdr->taglen > NFS4_MAXTAGLEN); 757 p = reserve_space(xdr, 4 + hdr->taglen + 8); 758 p = xdr_encode_opaque(p, hdr->tag, hdr->taglen); 759 *p++ = cpu_to_be32(hdr->minorversion); 760 hdr->nops_p = p; 761 *p = cpu_to_be32(hdr->nops); 762 } 763 764 static void encode_nops(struct compound_hdr *hdr) 765 { 766 BUG_ON(hdr->nops > NFS4_MAX_OPS); 767 *hdr->nops_p = htonl(hdr->nops); 768 } 769 770 static void encode_nfs4_verifier(struct xdr_stream *xdr, const nfs4_verifier *verf) 771 { 772 __be32 *p; 773 774 p = xdr_reserve_space(xdr, NFS4_VERIFIER_SIZE); 775 BUG_ON(p == NULL); 776 xdr_encode_opaque_fixed(p, verf->data, NFS4_VERIFIER_SIZE); 777 } 778 779 static void encode_attrs(struct xdr_stream *xdr, const struct iattr *iap, const struct nfs_server *server) 780 { 781 char owner_name[IDMAP_NAMESZ]; 782 char owner_group[IDMAP_NAMESZ]; 783 int owner_namelen = 0; 784 int owner_grouplen = 0; 785 __be32 *p; 786 __be32 *q; 787 int len; 788 uint32_t bmval0 = 0; 789 uint32_t bmval1 = 0; 790 791 /* 792 * We reserve enough space to write the entire attribute buffer at once. 793 * In the worst-case, this would be 794 * 12(bitmap) + 4(attrlen) + 8(size) + 4(mode) + 4(atime) + 4(mtime) 795 * = 36 bytes, plus any contribution from variable-length fields 796 * such as owner/group. 797 */ 798 len = 16; 799 800 /* Sigh */ 801 if (iap->ia_valid & ATTR_SIZE) 802 len += 8; 803 if (iap->ia_valid & ATTR_MODE) 804 len += 4; 805 if (iap->ia_valid & ATTR_UID) { 806 owner_namelen = nfs_map_uid_to_name(server->nfs_client, iap->ia_uid, owner_name); 807 if (owner_namelen < 0) { 808 dprintk("nfs: couldn't resolve uid %d to string\n", 809 iap->ia_uid); 810 /* XXX */ 811 strcpy(owner_name, "nobody"); 812 owner_namelen = sizeof("nobody") - 1; 813 /* goto out; */ 814 } 815 len += 4 + (XDR_QUADLEN(owner_namelen) << 2); 816 } 817 if (iap->ia_valid & ATTR_GID) { 818 owner_grouplen = nfs_map_gid_to_group(server->nfs_client, iap->ia_gid, owner_group); 819 if (owner_grouplen < 0) { 820 dprintk("nfs: couldn't resolve gid %d to string\n", 821 iap->ia_gid); 822 strcpy(owner_group, "nobody"); 823 owner_grouplen = sizeof("nobody") - 1; 824 /* goto out; */ 825 } 826 len += 4 + (XDR_QUADLEN(owner_grouplen) << 2); 827 } 828 if (iap->ia_valid & ATTR_ATIME_SET) 829 len += 16; 830 else if (iap->ia_valid & ATTR_ATIME) 831 len += 4; 832 if (iap->ia_valid & ATTR_MTIME_SET) 833 len += 16; 834 else if (iap->ia_valid & ATTR_MTIME) 835 len += 4; 836 p = reserve_space(xdr, len); 837 838 /* 839 * We write the bitmap length now, but leave the bitmap and the attribute 840 * buffer length to be backfilled at the end of this routine. 841 */ 842 *p++ = cpu_to_be32(2); 843 q = p; 844 p += 3; 845 846 if (iap->ia_valid & ATTR_SIZE) { 847 bmval0 |= FATTR4_WORD0_SIZE; 848 p = xdr_encode_hyper(p, iap->ia_size); 849 } 850 if (iap->ia_valid & ATTR_MODE) { 851 bmval1 |= FATTR4_WORD1_MODE; 852 *p++ = cpu_to_be32(iap->ia_mode & S_IALLUGO); 853 } 854 if (iap->ia_valid & ATTR_UID) { 855 bmval1 |= FATTR4_WORD1_OWNER; 856 p = xdr_encode_opaque(p, owner_name, owner_namelen); 857 } 858 if (iap->ia_valid & ATTR_GID) { 859 bmval1 |= FATTR4_WORD1_OWNER_GROUP; 860 p = xdr_encode_opaque(p, owner_group, owner_grouplen); 861 } 862 if (iap->ia_valid & ATTR_ATIME_SET) { 863 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET; 864 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME); 865 *p++ = cpu_to_be32(0); 866 *p++ = cpu_to_be32(iap->ia_mtime.tv_sec); 867 *p++ = cpu_to_be32(iap->ia_mtime.tv_nsec); 868 } 869 else if (iap->ia_valid & ATTR_ATIME) { 870 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET; 871 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME); 872 } 873 if (iap->ia_valid & ATTR_MTIME_SET) { 874 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET; 875 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME); 876 *p++ = cpu_to_be32(0); 877 *p++ = cpu_to_be32(iap->ia_mtime.tv_sec); 878 *p++ = cpu_to_be32(iap->ia_mtime.tv_nsec); 879 } 880 else if (iap->ia_valid & ATTR_MTIME) { 881 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET; 882 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME); 883 } 884 885 /* 886 * Now we backfill the bitmap and the attribute buffer length. 887 */ 888 if (len != ((char *)p - (char *)q) + 4) { 889 printk(KERN_ERR "nfs: Attr length error, %u != %Zu\n", 890 len, ((char *)p - (char *)q) + 4); 891 BUG(); 892 } 893 len = (char *)p - (char *)q - 12; 894 *q++ = htonl(bmval0); 895 *q++ = htonl(bmval1); 896 *q = htonl(len); 897 898 /* out: */ 899 } 900 901 static void encode_access(struct xdr_stream *xdr, u32 access, struct compound_hdr *hdr) 902 { 903 __be32 *p; 904 905 p = reserve_space(xdr, 8); 906 *p++ = cpu_to_be32(OP_ACCESS); 907 *p = cpu_to_be32(access); 908 hdr->nops++; 909 hdr->replen += decode_access_maxsz; 910 } 911 912 static void encode_close(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr) 913 { 914 __be32 *p; 915 916 p = reserve_space(xdr, 8+NFS4_STATEID_SIZE); 917 *p++ = cpu_to_be32(OP_CLOSE); 918 *p++ = cpu_to_be32(arg->seqid->sequence->counter); 919 xdr_encode_opaque_fixed(p, arg->stateid->data, NFS4_STATEID_SIZE); 920 hdr->nops++; 921 hdr->replen += decode_close_maxsz; 922 } 923 924 static void encode_commit(struct xdr_stream *xdr, const struct nfs_writeargs *args, struct compound_hdr *hdr) 925 { 926 __be32 *p; 927 928 p = reserve_space(xdr, 16); 929 *p++ = cpu_to_be32(OP_COMMIT); 930 p = xdr_encode_hyper(p, args->offset); 931 *p = cpu_to_be32(args->count); 932 hdr->nops++; 933 hdr->replen += decode_commit_maxsz; 934 } 935 936 static void encode_create(struct xdr_stream *xdr, const struct nfs4_create_arg *create, struct compound_hdr *hdr) 937 { 938 __be32 *p; 939 940 p = reserve_space(xdr, 8); 941 *p++ = cpu_to_be32(OP_CREATE); 942 *p = cpu_to_be32(create->ftype); 943 944 switch (create->ftype) { 945 case NF4LNK: 946 p = reserve_space(xdr, 4); 947 *p = cpu_to_be32(create->u.symlink.len); 948 xdr_write_pages(xdr, create->u.symlink.pages, 0, create->u.symlink.len); 949 break; 950 951 case NF4BLK: case NF4CHR: 952 p = reserve_space(xdr, 8); 953 *p++ = cpu_to_be32(create->u.device.specdata1); 954 *p = cpu_to_be32(create->u.device.specdata2); 955 break; 956 957 default: 958 break; 959 } 960 961 encode_string(xdr, create->name->len, create->name->name); 962 hdr->nops++; 963 hdr->replen += decode_create_maxsz; 964 965 encode_attrs(xdr, create->attrs, create->server); 966 } 967 968 static void encode_getattr_one(struct xdr_stream *xdr, uint32_t bitmap, struct compound_hdr *hdr) 969 { 970 __be32 *p; 971 972 p = reserve_space(xdr, 12); 973 *p++ = cpu_to_be32(OP_GETATTR); 974 *p++ = cpu_to_be32(1); 975 *p = cpu_to_be32(bitmap); 976 hdr->nops++; 977 hdr->replen += decode_getattr_maxsz; 978 } 979 980 static void encode_getattr_two(struct xdr_stream *xdr, uint32_t bm0, uint32_t bm1, struct compound_hdr *hdr) 981 { 982 __be32 *p; 983 984 p = reserve_space(xdr, 16); 985 *p++ = cpu_to_be32(OP_GETATTR); 986 *p++ = cpu_to_be32(2); 987 *p++ = cpu_to_be32(bm0); 988 *p = cpu_to_be32(bm1); 989 hdr->nops++; 990 hdr->replen += decode_getattr_maxsz; 991 } 992 993 static void encode_getfattr(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr) 994 { 995 encode_getattr_two(xdr, bitmask[0] & nfs4_fattr_bitmap[0], 996 bitmask[1] & nfs4_fattr_bitmap[1], hdr); 997 } 998 999 static void encode_fsinfo(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr) 1000 { 1001 encode_getattr_two(xdr, bitmask[0] & nfs4_fsinfo_bitmap[0], 1002 bitmask[1] & nfs4_fsinfo_bitmap[1], hdr); 1003 } 1004 1005 static void encode_fs_locations(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr) 1006 { 1007 encode_getattr_two(xdr, bitmask[0] & nfs4_fs_locations_bitmap[0], 1008 bitmask[1] & nfs4_fs_locations_bitmap[1], hdr); 1009 } 1010 1011 static void encode_getfh(struct xdr_stream *xdr, struct compound_hdr *hdr) 1012 { 1013 __be32 *p; 1014 1015 p = reserve_space(xdr, 4); 1016 *p = cpu_to_be32(OP_GETFH); 1017 hdr->nops++; 1018 hdr->replen += decode_getfh_maxsz; 1019 } 1020 1021 static void encode_link(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr) 1022 { 1023 __be32 *p; 1024 1025 p = reserve_space(xdr, 8 + name->len); 1026 *p++ = cpu_to_be32(OP_LINK); 1027 xdr_encode_opaque(p, name->name, name->len); 1028 hdr->nops++; 1029 hdr->replen += decode_link_maxsz; 1030 } 1031 1032 static inline int nfs4_lock_type(struct file_lock *fl, int block) 1033 { 1034 if ((fl->fl_type & (F_RDLCK|F_WRLCK|F_UNLCK)) == F_RDLCK) 1035 return block ? NFS4_READW_LT : NFS4_READ_LT; 1036 return block ? NFS4_WRITEW_LT : NFS4_WRITE_LT; 1037 } 1038 1039 static inline uint64_t nfs4_lock_length(struct file_lock *fl) 1040 { 1041 if (fl->fl_end == OFFSET_MAX) 1042 return ~(uint64_t)0; 1043 return fl->fl_end - fl->fl_start + 1; 1044 } 1045 1046 /* 1047 * opcode,type,reclaim,offset,length,new_lock_owner = 32 1048 * open_seqid,open_stateid,lock_seqid,lock_owner.clientid, lock_owner.id = 40 1049 */ 1050 static void encode_lock(struct xdr_stream *xdr, const struct nfs_lock_args *args, struct compound_hdr *hdr) 1051 { 1052 __be32 *p; 1053 1054 p = reserve_space(xdr, 32); 1055 *p++ = cpu_to_be32(OP_LOCK); 1056 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, args->block)); 1057 *p++ = cpu_to_be32(args->reclaim); 1058 p = xdr_encode_hyper(p, args->fl->fl_start); 1059 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl)); 1060 *p = cpu_to_be32(args->new_lock_owner); 1061 if (args->new_lock_owner){ 1062 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE+32); 1063 *p++ = cpu_to_be32(args->open_seqid->sequence->counter); 1064 p = xdr_encode_opaque_fixed(p, args->open_stateid->data, NFS4_STATEID_SIZE); 1065 *p++ = cpu_to_be32(args->lock_seqid->sequence->counter); 1066 p = xdr_encode_hyper(p, args->lock_owner.clientid); 1067 *p++ = cpu_to_be32(16); 1068 p = xdr_encode_opaque_fixed(p, "lock id:", 8); 1069 xdr_encode_hyper(p, args->lock_owner.id); 1070 } 1071 else { 1072 p = reserve_space(xdr, NFS4_STATEID_SIZE+4); 1073 p = xdr_encode_opaque_fixed(p, args->lock_stateid->data, NFS4_STATEID_SIZE); 1074 *p = cpu_to_be32(args->lock_seqid->sequence->counter); 1075 } 1076 hdr->nops++; 1077 hdr->replen += decode_lock_maxsz; 1078 } 1079 1080 static void encode_lockt(struct xdr_stream *xdr, const struct nfs_lockt_args *args, struct compound_hdr *hdr) 1081 { 1082 __be32 *p; 1083 1084 p = reserve_space(xdr, 52); 1085 *p++ = cpu_to_be32(OP_LOCKT); 1086 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, 0)); 1087 p = xdr_encode_hyper(p, args->fl->fl_start); 1088 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl)); 1089 p = xdr_encode_hyper(p, args->lock_owner.clientid); 1090 *p++ = cpu_to_be32(16); 1091 p = xdr_encode_opaque_fixed(p, "lock id:", 8); 1092 xdr_encode_hyper(p, args->lock_owner.id); 1093 hdr->nops++; 1094 hdr->replen += decode_lockt_maxsz; 1095 } 1096 1097 static void encode_locku(struct xdr_stream *xdr, const struct nfs_locku_args *args, struct compound_hdr *hdr) 1098 { 1099 __be32 *p; 1100 1101 p = reserve_space(xdr, 12+NFS4_STATEID_SIZE+16); 1102 *p++ = cpu_to_be32(OP_LOCKU); 1103 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, 0)); 1104 *p++ = cpu_to_be32(args->seqid->sequence->counter); 1105 p = xdr_encode_opaque_fixed(p, args->stateid->data, NFS4_STATEID_SIZE); 1106 p = xdr_encode_hyper(p, args->fl->fl_start); 1107 xdr_encode_hyper(p, nfs4_lock_length(args->fl)); 1108 hdr->nops++; 1109 hdr->replen += decode_locku_maxsz; 1110 } 1111 1112 static void encode_lookup(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr) 1113 { 1114 int len = name->len; 1115 __be32 *p; 1116 1117 p = reserve_space(xdr, 8 + len); 1118 *p++ = cpu_to_be32(OP_LOOKUP); 1119 xdr_encode_opaque(p, name->name, len); 1120 hdr->nops++; 1121 hdr->replen += decode_lookup_maxsz; 1122 } 1123 1124 static void encode_share_access(struct xdr_stream *xdr, fmode_t fmode) 1125 { 1126 __be32 *p; 1127 1128 p = reserve_space(xdr, 8); 1129 switch (fmode & (FMODE_READ|FMODE_WRITE)) { 1130 case FMODE_READ: 1131 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_READ); 1132 break; 1133 case FMODE_WRITE: 1134 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_WRITE); 1135 break; 1136 case FMODE_READ|FMODE_WRITE: 1137 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_BOTH); 1138 break; 1139 default: 1140 *p++ = cpu_to_be32(0); 1141 } 1142 *p = cpu_to_be32(0); /* for linux, share_deny = 0 always */ 1143 } 1144 1145 static inline void encode_openhdr(struct xdr_stream *xdr, const struct nfs_openargs *arg) 1146 { 1147 __be32 *p; 1148 /* 1149 * opcode 4, seqid 4, share_access 4, share_deny 4, clientid 8, ownerlen 4, 1150 * owner 4 = 32 1151 */ 1152 p = reserve_space(xdr, 8); 1153 *p++ = cpu_to_be32(OP_OPEN); 1154 *p = cpu_to_be32(arg->seqid->sequence->counter); 1155 encode_share_access(xdr, arg->fmode); 1156 p = reserve_space(xdr, 28); 1157 p = xdr_encode_hyper(p, arg->clientid); 1158 *p++ = cpu_to_be32(16); 1159 p = xdr_encode_opaque_fixed(p, "open id:", 8); 1160 xdr_encode_hyper(p, arg->id); 1161 } 1162 1163 static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_openargs *arg) 1164 { 1165 __be32 *p; 1166 struct nfs_client *clp; 1167 1168 p = reserve_space(xdr, 4); 1169 switch(arg->open_flags & O_EXCL) { 1170 case 0: 1171 *p = cpu_to_be32(NFS4_CREATE_UNCHECKED); 1172 encode_attrs(xdr, arg->u.attrs, arg->server); 1173 break; 1174 default: 1175 clp = arg->server->nfs_client; 1176 if (clp->cl_minorversion > 0) { 1177 if (nfs4_has_persistent_session(clp)) { 1178 *p = cpu_to_be32(NFS4_CREATE_GUARDED); 1179 encode_attrs(xdr, arg->u.attrs, arg->server); 1180 } else { 1181 struct iattr dummy; 1182 1183 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE4_1); 1184 encode_nfs4_verifier(xdr, &arg->u.verifier); 1185 dummy.ia_valid = 0; 1186 encode_attrs(xdr, &dummy, arg->server); 1187 } 1188 } else { 1189 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE); 1190 encode_nfs4_verifier(xdr, &arg->u.verifier); 1191 } 1192 } 1193 } 1194 1195 static void encode_opentype(struct xdr_stream *xdr, const struct nfs_openargs *arg) 1196 { 1197 __be32 *p; 1198 1199 p = reserve_space(xdr, 4); 1200 switch (arg->open_flags & O_CREAT) { 1201 case 0: 1202 *p = cpu_to_be32(NFS4_OPEN_NOCREATE); 1203 break; 1204 default: 1205 BUG_ON(arg->claim != NFS4_OPEN_CLAIM_NULL); 1206 *p = cpu_to_be32(NFS4_OPEN_CREATE); 1207 encode_createmode(xdr, arg); 1208 } 1209 } 1210 1211 static inline void encode_delegation_type(struct xdr_stream *xdr, fmode_t delegation_type) 1212 { 1213 __be32 *p; 1214 1215 p = reserve_space(xdr, 4); 1216 switch (delegation_type) { 1217 case 0: 1218 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_NONE); 1219 break; 1220 case FMODE_READ: 1221 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_READ); 1222 break; 1223 case FMODE_WRITE|FMODE_READ: 1224 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_WRITE); 1225 break; 1226 default: 1227 BUG(); 1228 } 1229 } 1230 1231 static inline void encode_claim_null(struct xdr_stream *xdr, const struct qstr *name) 1232 { 1233 __be32 *p; 1234 1235 p = reserve_space(xdr, 4); 1236 *p = cpu_to_be32(NFS4_OPEN_CLAIM_NULL); 1237 encode_string(xdr, name->len, name->name); 1238 } 1239 1240 static inline void encode_claim_previous(struct xdr_stream *xdr, fmode_t type) 1241 { 1242 __be32 *p; 1243 1244 p = reserve_space(xdr, 4); 1245 *p = cpu_to_be32(NFS4_OPEN_CLAIM_PREVIOUS); 1246 encode_delegation_type(xdr, type); 1247 } 1248 1249 static inline void encode_claim_delegate_cur(struct xdr_stream *xdr, const struct qstr *name, const nfs4_stateid *stateid) 1250 { 1251 __be32 *p; 1252 1253 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE); 1254 *p++ = cpu_to_be32(NFS4_OPEN_CLAIM_DELEGATE_CUR); 1255 xdr_encode_opaque_fixed(p, stateid->data, NFS4_STATEID_SIZE); 1256 encode_string(xdr, name->len, name->name); 1257 } 1258 1259 static void encode_open(struct xdr_stream *xdr, const struct nfs_openargs *arg, struct compound_hdr *hdr) 1260 { 1261 encode_openhdr(xdr, arg); 1262 encode_opentype(xdr, arg); 1263 switch (arg->claim) { 1264 case NFS4_OPEN_CLAIM_NULL: 1265 encode_claim_null(xdr, arg->name); 1266 break; 1267 case NFS4_OPEN_CLAIM_PREVIOUS: 1268 encode_claim_previous(xdr, arg->u.delegation_type); 1269 break; 1270 case NFS4_OPEN_CLAIM_DELEGATE_CUR: 1271 encode_claim_delegate_cur(xdr, arg->name, &arg->u.delegation); 1272 break; 1273 default: 1274 BUG(); 1275 } 1276 hdr->nops++; 1277 hdr->replen += decode_open_maxsz; 1278 } 1279 1280 static void encode_open_confirm(struct xdr_stream *xdr, const struct nfs_open_confirmargs *arg, struct compound_hdr *hdr) 1281 { 1282 __be32 *p; 1283 1284 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE+4); 1285 *p++ = cpu_to_be32(OP_OPEN_CONFIRM); 1286 p = xdr_encode_opaque_fixed(p, arg->stateid->data, NFS4_STATEID_SIZE); 1287 *p = cpu_to_be32(arg->seqid->sequence->counter); 1288 hdr->nops++; 1289 hdr->replen += decode_open_confirm_maxsz; 1290 } 1291 1292 static void encode_open_downgrade(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr) 1293 { 1294 __be32 *p; 1295 1296 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE+4); 1297 *p++ = cpu_to_be32(OP_OPEN_DOWNGRADE); 1298 p = xdr_encode_opaque_fixed(p, arg->stateid->data, NFS4_STATEID_SIZE); 1299 *p = cpu_to_be32(arg->seqid->sequence->counter); 1300 encode_share_access(xdr, arg->fmode); 1301 hdr->nops++; 1302 hdr->replen += decode_open_downgrade_maxsz; 1303 } 1304 1305 static void 1306 encode_putfh(struct xdr_stream *xdr, const struct nfs_fh *fh, struct compound_hdr *hdr) 1307 { 1308 int len = fh->size; 1309 __be32 *p; 1310 1311 p = reserve_space(xdr, 8 + len); 1312 *p++ = cpu_to_be32(OP_PUTFH); 1313 xdr_encode_opaque(p, fh->data, len); 1314 hdr->nops++; 1315 hdr->replen += decode_putfh_maxsz; 1316 } 1317 1318 static void encode_putrootfh(struct xdr_stream *xdr, struct compound_hdr *hdr) 1319 { 1320 __be32 *p; 1321 1322 p = reserve_space(xdr, 4); 1323 *p = cpu_to_be32(OP_PUTROOTFH); 1324 hdr->nops++; 1325 hdr->replen += decode_putrootfh_maxsz; 1326 } 1327 1328 static void encode_stateid(struct xdr_stream *xdr, const struct nfs_open_context *ctx) 1329 { 1330 nfs4_stateid stateid; 1331 __be32 *p; 1332 1333 p = reserve_space(xdr, NFS4_STATEID_SIZE); 1334 if (ctx->state != NULL) { 1335 nfs4_copy_stateid(&stateid, ctx->state, ctx->lockowner); 1336 xdr_encode_opaque_fixed(p, stateid.data, NFS4_STATEID_SIZE); 1337 } else 1338 xdr_encode_opaque_fixed(p, zero_stateid.data, NFS4_STATEID_SIZE); 1339 } 1340 1341 static void encode_read(struct xdr_stream *xdr, const struct nfs_readargs *args, struct compound_hdr *hdr) 1342 { 1343 __be32 *p; 1344 1345 p = reserve_space(xdr, 4); 1346 *p = cpu_to_be32(OP_READ); 1347 1348 encode_stateid(xdr, args->context); 1349 1350 p = reserve_space(xdr, 12); 1351 p = xdr_encode_hyper(p, args->offset); 1352 *p = cpu_to_be32(args->count); 1353 hdr->nops++; 1354 hdr->replen += decode_read_maxsz; 1355 } 1356 1357 static void encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg *readdir, struct rpc_rqst *req, struct compound_hdr *hdr) 1358 { 1359 uint32_t attrs[2] = { 1360 FATTR4_WORD0_RDATTR_ERROR|FATTR4_WORD0_FILEID, 1361 FATTR4_WORD1_MOUNTED_ON_FILEID, 1362 }; 1363 __be32 *p; 1364 1365 p = reserve_space(xdr, 12+NFS4_VERIFIER_SIZE+20); 1366 *p++ = cpu_to_be32(OP_READDIR); 1367 p = xdr_encode_hyper(p, readdir->cookie); 1368 p = xdr_encode_opaque_fixed(p, readdir->verifier.data, NFS4_VERIFIER_SIZE); 1369 *p++ = cpu_to_be32(readdir->count >> 1); /* We're not doing readdirplus */ 1370 *p++ = cpu_to_be32(readdir->count); 1371 *p++ = cpu_to_be32(2); 1372 /* Switch to mounted_on_fileid if the server supports it */ 1373 if (readdir->bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID) 1374 attrs[0] &= ~FATTR4_WORD0_FILEID; 1375 else 1376 attrs[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID; 1377 *p++ = cpu_to_be32(attrs[0] & readdir->bitmask[0]); 1378 *p = cpu_to_be32(attrs[1] & readdir->bitmask[1]); 1379 hdr->nops++; 1380 hdr->replen += decode_readdir_maxsz; 1381 dprintk("%s: cookie = %Lu, verifier = %08x:%08x, bitmap = %08x:%08x\n", 1382 __func__, 1383 (unsigned long long)readdir->cookie, 1384 ((u32 *)readdir->verifier.data)[0], 1385 ((u32 *)readdir->verifier.data)[1], 1386 attrs[0] & readdir->bitmask[0], 1387 attrs[1] & readdir->bitmask[1]); 1388 } 1389 1390 static void encode_readlink(struct xdr_stream *xdr, const struct nfs4_readlink *readlink, struct rpc_rqst *req, struct compound_hdr *hdr) 1391 { 1392 __be32 *p; 1393 1394 p = reserve_space(xdr, 4); 1395 *p = cpu_to_be32(OP_READLINK); 1396 hdr->nops++; 1397 hdr->replen += decode_readlink_maxsz; 1398 } 1399 1400 static void encode_remove(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr) 1401 { 1402 __be32 *p; 1403 1404 p = reserve_space(xdr, 8 + name->len); 1405 *p++ = cpu_to_be32(OP_REMOVE); 1406 xdr_encode_opaque(p, name->name, name->len); 1407 hdr->nops++; 1408 hdr->replen += decode_remove_maxsz; 1409 } 1410 1411 static void encode_rename(struct xdr_stream *xdr, const struct qstr *oldname, const struct qstr *newname, struct compound_hdr *hdr) 1412 { 1413 __be32 *p; 1414 1415 p = reserve_space(xdr, 4); 1416 *p = cpu_to_be32(OP_RENAME); 1417 encode_string(xdr, oldname->len, oldname->name); 1418 encode_string(xdr, newname->len, newname->name); 1419 hdr->nops++; 1420 hdr->replen += decode_rename_maxsz; 1421 } 1422 1423 static void encode_renew(struct xdr_stream *xdr, const struct nfs_client *client_stateid, struct compound_hdr *hdr) 1424 { 1425 __be32 *p; 1426 1427 p = reserve_space(xdr, 12); 1428 *p++ = cpu_to_be32(OP_RENEW); 1429 xdr_encode_hyper(p, client_stateid->cl_clientid); 1430 hdr->nops++; 1431 hdr->replen += decode_renew_maxsz; 1432 } 1433 1434 static void 1435 encode_restorefh(struct xdr_stream *xdr, struct compound_hdr *hdr) 1436 { 1437 __be32 *p; 1438 1439 p = reserve_space(xdr, 4); 1440 *p = cpu_to_be32(OP_RESTOREFH); 1441 hdr->nops++; 1442 hdr->replen += decode_restorefh_maxsz; 1443 } 1444 1445 static int 1446 encode_setacl(struct xdr_stream *xdr, struct nfs_setaclargs *arg, struct compound_hdr *hdr) 1447 { 1448 __be32 *p; 1449 1450 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE); 1451 *p++ = cpu_to_be32(OP_SETATTR); 1452 xdr_encode_opaque_fixed(p, zero_stateid.data, NFS4_STATEID_SIZE); 1453 p = reserve_space(xdr, 2*4); 1454 *p++ = cpu_to_be32(1); 1455 *p = cpu_to_be32(FATTR4_WORD0_ACL); 1456 if (arg->acl_len % 4) 1457 return -EINVAL; 1458 p = reserve_space(xdr, 4); 1459 *p = cpu_to_be32(arg->acl_len); 1460 xdr_write_pages(xdr, arg->acl_pages, arg->acl_pgbase, arg->acl_len); 1461 hdr->nops++; 1462 hdr->replen += decode_setacl_maxsz; 1463 return 0; 1464 } 1465 1466 static void 1467 encode_savefh(struct xdr_stream *xdr, struct compound_hdr *hdr) 1468 { 1469 __be32 *p; 1470 1471 p = reserve_space(xdr, 4); 1472 *p = cpu_to_be32(OP_SAVEFH); 1473 hdr->nops++; 1474 hdr->replen += decode_savefh_maxsz; 1475 } 1476 1477 static void encode_setattr(struct xdr_stream *xdr, const struct nfs_setattrargs *arg, const struct nfs_server *server, struct compound_hdr *hdr) 1478 { 1479 __be32 *p; 1480 1481 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE); 1482 *p++ = cpu_to_be32(OP_SETATTR); 1483 xdr_encode_opaque_fixed(p, arg->stateid.data, NFS4_STATEID_SIZE); 1484 hdr->nops++; 1485 hdr->replen += decode_setattr_maxsz; 1486 encode_attrs(xdr, arg->iap, server); 1487 } 1488 1489 static void encode_setclientid(struct xdr_stream *xdr, const struct nfs4_setclientid *setclientid, struct compound_hdr *hdr) 1490 { 1491 __be32 *p; 1492 1493 p = reserve_space(xdr, 4 + NFS4_VERIFIER_SIZE); 1494 *p++ = cpu_to_be32(OP_SETCLIENTID); 1495 xdr_encode_opaque_fixed(p, setclientid->sc_verifier->data, NFS4_VERIFIER_SIZE); 1496 1497 encode_string(xdr, setclientid->sc_name_len, setclientid->sc_name); 1498 p = reserve_space(xdr, 4); 1499 *p = cpu_to_be32(setclientid->sc_prog); 1500 encode_string(xdr, setclientid->sc_netid_len, setclientid->sc_netid); 1501 encode_string(xdr, setclientid->sc_uaddr_len, setclientid->sc_uaddr); 1502 p = reserve_space(xdr, 4); 1503 *p = cpu_to_be32(setclientid->sc_cb_ident); 1504 hdr->nops++; 1505 hdr->replen += decode_setclientid_maxsz; 1506 } 1507 1508 static void encode_setclientid_confirm(struct xdr_stream *xdr, const struct nfs_client *client_state, struct compound_hdr *hdr) 1509 { 1510 __be32 *p; 1511 1512 p = reserve_space(xdr, 12 + NFS4_VERIFIER_SIZE); 1513 *p++ = cpu_to_be32(OP_SETCLIENTID_CONFIRM); 1514 p = xdr_encode_hyper(p, client_state->cl_clientid); 1515 xdr_encode_opaque_fixed(p, client_state->cl_confirm.data, NFS4_VERIFIER_SIZE); 1516 hdr->nops++; 1517 hdr->replen += decode_setclientid_confirm_maxsz; 1518 } 1519 1520 static void encode_write(struct xdr_stream *xdr, const struct nfs_writeargs *args, struct compound_hdr *hdr) 1521 { 1522 __be32 *p; 1523 1524 p = reserve_space(xdr, 4); 1525 *p = cpu_to_be32(OP_WRITE); 1526 1527 encode_stateid(xdr, args->context); 1528 1529 p = reserve_space(xdr, 16); 1530 p = xdr_encode_hyper(p, args->offset); 1531 *p++ = cpu_to_be32(args->stable); 1532 *p = cpu_to_be32(args->count); 1533 1534 xdr_write_pages(xdr, args->pages, args->pgbase, args->count); 1535 hdr->nops++; 1536 hdr->replen += decode_write_maxsz; 1537 } 1538 1539 static void encode_delegreturn(struct xdr_stream *xdr, const nfs4_stateid *stateid, struct compound_hdr *hdr) 1540 { 1541 __be32 *p; 1542 1543 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE); 1544 1545 *p++ = cpu_to_be32(OP_DELEGRETURN); 1546 xdr_encode_opaque_fixed(p, stateid->data, NFS4_STATEID_SIZE); 1547 hdr->nops++; 1548 hdr->replen += decode_delegreturn_maxsz; 1549 } 1550 1551 #if defined(CONFIG_NFS_V4_1) 1552 /* NFSv4.1 operations */ 1553 static void encode_exchange_id(struct xdr_stream *xdr, 1554 struct nfs41_exchange_id_args *args, 1555 struct compound_hdr *hdr) 1556 { 1557 __be32 *p; 1558 1559 p = reserve_space(xdr, 4 + sizeof(args->verifier->data)); 1560 *p++ = cpu_to_be32(OP_EXCHANGE_ID); 1561 xdr_encode_opaque_fixed(p, args->verifier->data, sizeof(args->verifier->data)); 1562 1563 encode_string(xdr, args->id_len, args->id); 1564 1565 p = reserve_space(xdr, 12); 1566 *p++ = cpu_to_be32(args->flags); 1567 *p++ = cpu_to_be32(0); /* zero length state_protect4_a */ 1568 *p = cpu_to_be32(0); /* zero length implementation id array */ 1569 hdr->nops++; 1570 hdr->replen += decode_exchange_id_maxsz; 1571 } 1572 1573 static void encode_create_session(struct xdr_stream *xdr, 1574 struct nfs41_create_session_args *args, 1575 struct compound_hdr *hdr) 1576 { 1577 __be32 *p; 1578 char machine_name[NFS4_MAX_MACHINE_NAME_LEN]; 1579 uint32_t len; 1580 struct nfs_client *clp = args->client; 1581 1582 len = scnprintf(machine_name, sizeof(machine_name), "%s", 1583 clp->cl_ipaddr); 1584 1585 p = reserve_space(xdr, 20 + 2*28 + 20 + len + 12); 1586 *p++ = cpu_to_be32(OP_CREATE_SESSION); 1587 p = xdr_encode_hyper(p, clp->cl_ex_clid); 1588 *p++ = cpu_to_be32(clp->cl_seqid); /*Sequence id */ 1589 *p++ = cpu_to_be32(args->flags); /*flags */ 1590 1591 /* Fore Channel */ 1592 *p++ = cpu_to_be32(args->fc_attrs.headerpadsz); /* header padding size */ 1593 *p++ = cpu_to_be32(args->fc_attrs.max_rqst_sz); /* max req size */ 1594 *p++ = cpu_to_be32(args->fc_attrs.max_resp_sz); /* max resp size */ 1595 *p++ = cpu_to_be32(args->fc_attrs.max_resp_sz_cached); /* Max resp sz cached */ 1596 *p++ = cpu_to_be32(args->fc_attrs.max_ops); /* max operations */ 1597 *p++ = cpu_to_be32(args->fc_attrs.max_reqs); /* max requests */ 1598 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */ 1599 1600 /* Back Channel */ 1601 *p++ = cpu_to_be32(args->fc_attrs.headerpadsz); /* header padding size */ 1602 *p++ = cpu_to_be32(args->bc_attrs.max_rqst_sz); /* max req size */ 1603 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz); /* max resp size */ 1604 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz_cached); /* Max resp sz cached */ 1605 *p++ = cpu_to_be32(args->bc_attrs.max_ops); /* max operations */ 1606 *p++ = cpu_to_be32(args->bc_attrs.max_reqs); /* max requests */ 1607 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */ 1608 1609 *p++ = cpu_to_be32(args->cb_program); /* cb_program */ 1610 *p++ = cpu_to_be32(1); 1611 *p++ = cpu_to_be32(RPC_AUTH_UNIX); /* auth_sys */ 1612 1613 /* authsys_parms rfc1831 */ 1614 *p++ = cpu_to_be32((u32)clp->cl_boot_time.tv_nsec); /* stamp */ 1615 p = xdr_encode_opaque(p, machine_name, len); 1616 *p++ = cpu_to_be32(0); /* UID */ 1617 *p++ = cpu_to_be32(0); /* GID */ 1618 *p = cpu_to_be32(0); /* No more gids */ 1619 hdr->nops++; 1620 hdr->replen += decode_create_session_maxsz; 1621 } 1622 1623 static void encode_destroy_session(struct xdr_stream *xdr, 1624 struct nfs4_session *session, 1625 struct compound_hdr *hdr) 1626 { 1627 __be32 *p; 1628 p = reserve_space(xdr, 4 + NFS4_MAX_SESSIONID_LEN); 1629 *p++ = cpu_to_be32(OP_DESTROY_SESSION); 1630 xdr_encode_opaque_fixed(p, session->sess_id.data, NFS4_MAX_SESSIONID_LEN); 1631 hdr->nops++; 1632 hdr->replen += decode_destroy_session_maxsz; 1633 } 1634 1635 static void encode_reclaim_complete(struct xdr_stream *xdr, 1636 struct nfs41_reclaim_complete_args *args, 1637 struct compound_hdr *hdr) 1638 { 1639 __be32 *p; 1640 1641 p = reserve_space(xdr, 8); 1642 *p++ = cpu_to_be32(OP_RECLAIM_COMPLETE); 1643 *p++ = cpu_to_be32(args->one_fs); 1644 hdr->nops++; 1645 hdr->replen += decode_reclaim_complete_maxsz; 1646 } 1647 #endif /* CONFIG_NFS_V4_1 */ 1648 1649 static void encode_sequence(struct xdr_stream *xdr, 1650 const struct nfs4_sequence_args *args, 1651 struct compound_hdr *hdr) 1652 { 1653 #if defined(CONFIG_NFS_V4_1) 1654 struct nfs4_session *session = args->sa_session; 1655 struct nfs4_slot_table *tp; 1656 struct nfs4_slot *slot; 1657 __be32 *p; 1658 1659 if (!session) 1660 return; 1661 1662 tp = &session->fc_slot_table; 1663 1664 WARN_ON(args->sa_slotid == NFS4_MAX_SLOT_TABLE); 1665 slot = tp->slots + args->sa_slotid; 1666 1667 p = reserve_space(xdr, 4 + NFS4_MAX_SESSIONID_LEN + 16); 1668 *p++ = cpu_to_be32(OP_SEQUENCE); 1669 1670 /* 1671 * Sessionid + seqid + slotid + max slotid + cache_this 1672 */ 1673 dprintk("%s: sessionid=%u:%u:%u:%u seqid=%d slotid=%d " 1674 "max_slotid=%d cache_this=%d\n", 1675 __func__, 1676 ((u32 *)session->sess_id.data)[0], 1677 ((u32 *)session->sess_id.data)[1], 1678 ((u32 *)session->sess_id.data)[2], 1679 ((u32 *)session->sess_id.data)[3], 1680 slot->seq_nr, args->sa_slotid, 1681 tp->highest_used_slotid, args->sa_cache_this); 1682 p = xdr_encode_opaque_fixed(p, session->sess_id.data, NFS4_MAX_SESSIONID_LEN); 1683 *p++ = cpu_to_be32(slot->seq_nr); 1684 *p++ = cpu_to_be32(args->sa_slotid); 1685 *p++ = cpu_to_be32(tp->highest_used_slotid); 1686 *p = cpu_to_be32(args->sa_cache_this); 1687 hdr->nops++; 1688 hdr->replen += decode_sequence_maxsz; 1689 #endif /* CONFIG_NFS_V4_1 */ 1690 } 1691 1692 /* 1693 * END OF "GENERIC" ENCODE ROUTINES. 1694 */ 1695 1696 static u32 nfs4_xdr_minorversion(const struct nfs4_sequence_args *args) 1697 { 1698 #if defined(CONFIG_NFS_V4_1) 1699 if (args->sa_session) 1700 return args->sa_session->clp->cl_minorversion; 1701 #endif /* CONFIG_NFS_V4_1 */ 1702 return 0; 1703 } 1704 1705 /* 1706 * Encode an ACCESS request 1707 */ 1708 static int nfs4_xdr_enc_access(struct rpc_rqst *req, __be32 *p, const struct nfs4_accessargs *args) 1709 { 1710 struct xdr_stream xdr; 1711 struct compound_hdr hdr = { 1712 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 1713 }; 1714 1715 xdr_init_encode(&xdr, &req->rq_snd_buf, p); 1716 encode_compound_hdr(&xdr, req, &hdr); 1717 encode_sequence(&xdr, &args->seq_args, &hdr); 1718 encode_putfh(&xdr, args->fh, &hdr); 1719 encode_access(&xdr, args->access, &hdr); 1720 encode_getfattr(&xdr, args->bitmask, &hdr); 1721 encode_nops(&hdr); 1722 return 0; 1723 } 1724 1725 /* 1726 * Encode LOOKUP request 1727 */ 1728 static int nfs4_xdr_enc_lookup(struct rpc_rqst *req, __be32 *p, const struct nfs4_lookup_arg *args) 1729 { 1730 struct xdr_stream xdr; 1731 struct compound_hdr hdr = { 1732 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 1733 }; 1734 1735 xdr_init_encode(&xdr, &req->rq_snd_buf, p); 1736 encode_compound_hdr(&xdr, req, &hdr); 1737 encode_sequence(&xdr, &args->seq_args, &hdr); 1738 encode_putfh(&xdr, args->dir_fh, &hdr); 1739 encode_lookup(&xdr, args->name, &hdr); 1740 encode_getfh(&xdr, &hdr); 1741 encode_getfattr(&xdr, args->bitmask, &hdr); 1742 encode_nops(&hdr); 1743 return 0; 1744 } 1745 1746 /* 1747 * Encode LOOKUP_ROOT request 1748 */ 1749 static int nfs4_xdr_enc_lookup_root(struct rpc_rqst *req, __be32 *p, const struct nfs4_lookup_root_arg *args) 1750 { 1751 struct xdr_stream xdr; 1752 struct compound_hdr hdr = { 1753 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 1754 }; 1755 1756 xdr_init_encode(&xdr, &req->rq_snd_buf, p); 1757 encode_compound_hdr(&xdr, req, &hdr); 1758 encode_sequence(&xdr, &args->seq_args, &hdr); 1759 encode_putrootfh(&xdr, &hdr); 1760 encode_getfh(&xdr, &hdr); 1761 encode_getfattr(&xdr, args->bitmask, &hdr); 1762 encode_nops(&hdr); 1763 return 0; 1764 } 1765 1766 /* 1767 * Encode REMOVE request 1768 */ 1769 static int nfs4_xdr_enc_remove(struct rpc_rqst *req, __be32 *p, const struct nfs_removeargs *args) 1770 { 1771 struct xdr_stream xdr; 1772 struct compound_hdr hdr = { 1773 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 1774 }; 1775 1776 xdr_init_encode(&xdr, &req->rq_snd_buf, p); 1777 encode_compound_hdr(&xdr, req, &hdr); 1778 encode_sequence(&xdr, &args->seq_args, &hdr); 1779 encode_putfh(&xdr, args->fh, &hdr); 1780 encode_remove(&xdr, &args->name, &hdr); 1781 encode_getfattr(&xdr, args->bitmask, &hdr); 1782 encode_nops(&hdr); 1783 return 0; 1784 } 1785 1786 /* 1787 * Encode RENAME request 1788 */ 1789 static int nfs4_xdr_enc_rename(struct rpc_rqst *req, __be32 *p, const struct nfs4_rename_arg *args) 1790 { 1791 struct xdr_stream xdr; 1792 struct compound_hdr hdr = { 1793 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 1794 }; 1795 1796 xdr_init_encode(&xdr, &req->rq_snd_buf, p); 1797 encode_compound_hdr(&xdr, req, &hdr); 1798 encode_sequence(&xdr, &args->seq_args, &hdr); 1799 encode_putfh(&xdr, args->old_dir, &hdr); 1800 encode_savefh(&xdr, &hdr); 1801 encode_putfh(&xdr, args->new_dir, &hdr); 1802 encode_rename(&xdr, args->old_name, args->new_name, &hdr); 1803 encode_getfattr(&xdr, args->bitmask, &hdr); 1804 encode_restorefh(&xdr, &hdr); 1805 encode_getfattr(&xdr, args->bitmask, &hdr); 1806 encode_nops(&hdr); 1807 return 0; 1808 } 1809 1810 /* 1811 * Encode LINK request 1812 */ 1813 static int nfs4_xdr_enc_link(struct rpc_rqst *req, __be32 *p, const struct nfs4_link_arg *args) 1814 { 1815 struct xdr_stream xdr; 1816 struct compound_hdr hdr = { 1817 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 1818 }; 1819 1820 xdr_init_encode(&xdr, &req->rq_snd_buf, p); 1821 encode_compound_hdr(&xdr, req, &hdr); 1822 encode_sequence(&xdr, &args->seq_args, &hdr); 1823 encode_putfh(&xdr, args->fh, &hdr); 1824 encode_savefh(&xdr, &hdr); 1825 encode_putfh(&xdr, args->dir_fh, &hdr); 1826 encode_link(&xdr, args->name, &hdr); 1827 encode_getfattr(&xdr, args->bitmask, &hdr); 1828 encode_restorefh(&xdr, &hdr); 1829 encode_getfattr(&xdr, args->bitmask, &hdr); 1830 encode_nops(&hdr); 1831 return 0; 1832 } 1833 1834 /* 1835 * Encode CREATE request 1836 */ 1837 static int nfs4_xdr_enc_create(struct rpc_rqst *req, __be32 *p, const struct nfs4_create_arg *args) 1838 { 1839 struct xdr_stream xdr; 1840 struct compound_hdr hdr = { 1841 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 1842 }; 1843 1844 xdr_init_encode(&xdr, &req->rq_snd_buf, p); 1845 encode_compound_hdr(&xdr, req, &hdr); 1846 encode_sequence(&xdr, &args->seq_args, &hdr); 1847 encode_putfh(&xdr, args->dir_fh, &hdr); 1848 encode_savefh(&xdr, &hdr); 1849 encode_create(&xdr, args, &hdr); 1850 encode_getfh(&xdr, &hdr); 1851 encode_getfattr(&xdr, args->bitmask, &hdr); 1852 encode_restorefh(&xdr, &hdr); 1853 encode_getfattr(&xdr, args->bitmask, &hdr); 1854 encode_nops(&hdr); 1855 return 0; 1856 } 1857 1858 /* 1859 * Encode SYMLINK request 1860 */ 1861 static int nfs4_xdr_enc_symlink(struct rpc_rqst *req, __be32 *p, const struct nfs4_create_arg *args) 1862 { 1863 return nfs4_xdr_enc_create(req, p, args); 1864 } 1865 1866 /* 1867 * Encode GETATTR request 1868 */ 1869 static int nfs4_xdr_enc_getattr(struct rpc_rqst *req, __be32 *p, const struct nfs4_getattr_arg *args) 1870 { 1871 struct xdr_stream xdr; 1872 struct compound_hdr hdr = { 1873 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 1874 }; 1875 1876 xdr_init_encode(&xdr, &req->rq_snd_buf, p); 1877 encode_compound_hdr(&xdr, req, &hdr); 1878 encode_sequence(&xdr, &args->seq_args, &hdr); 1879 encode_putfh(&xdr, args->fh, &hdr); 1880 encode_getfattr(&xdr, args->bitmask, &hdr); 1881 encode_nops(&hdr); 1882 return 0; 1883 } 1884 1885 /* 1886 * Encode a CLOSE request 1887 */ 1888 static int nfs4_xdr_enc_close(struct rpc_rqst *req, __be32 *p, struct nfs_closeargs *args) 1889 { 1890 struct xdr_stream xdr; 1891 struct compound_hdr hdr = { 1892 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 1893 }; 1894 1895 xdr_init_encode(&xdr, &req->rq_snd_buf, p); 1896 encode_compound_hdr(&xdr, req, &hdr); 1897 encode_sequence(&xdr, &args->seq_args, &hdr); 1898 encode_putfh(&xdr, args->fh, &hdr); 1899 encode_close(&xdr, args, &hdr); 1900 encode_getfattr(&xdr, args->bitmask, &hdr); 1901 encode_nops(&hdr); 1902 return 0; 1903 } 1904 1905 /* 1906 * Encode an OPEN request 1907 */ 1908 static int nfs4_xdr_enc_open(struct rpc_rqst *req, __be32 *p, struct nfs_openargs *args) 1909 { 1910 struct xdr_stream xdr; 1911 struct compound_hdr hdr = { 1912 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 1913 }; 1914 1915 xdr_init_encode(&xdr, &req->rq_snd_buf, p); 1916 encode_compound_hdr(&xdr, req, &hdr); 1917 encode_sequence(&xdr, &args->seq_args, &hdr); 1918 encode_putfh(&xdr, args->fh, &hdr); 1919 encode_savefh(&xdr, &hdr); 1920 encode_open(&xdr, args, &hdr); 1921 encode_getfh(&xdr, &hdr); 1922 encode_getfattr(&xdr, args->bitmask, &hdr); 1923 encode_restorefh(&xdr, &hdr); 1924 encode_getfattr(&xdr, args->bitmask, &hdr); 1925 encode_nops(&hdr); 1926 return 0; 1927 } 1928 1929 /* 1930 * Encode an OPEN_CONFIRM request 1931 */ 1932 static int nfs4_xdr_enc_open_confirm(struct rpc_rqst *req, __be32 *p, struct nfs_open_confirmargs *args) 1933 { 1934 struct xdr_stream xdr; 1935 struct compound_hdr hdr = { 1936 .nops = 0, 1937 }; 1938 1939 xdr_init_encode(&xdr, &req->rq_snd_buf, p); 1940 encode_compound_hdr(&xdr, req, &hdr); 1941 encode_putfh(&xdr, args->fh, &hdr); 1942 encode_open_confirm(&xdr, args, &hdr); 1943 encode_nops(&hdr); 1944 return 0; 1945 } 1946 1947 /* 1948 * Encode an OPEN request with no attributes. 1949 */ 1950 static int nfs4_xdr_enc_open_noattr(struct rpc_rqst *req, __be32 *p, struct nfs_openargs *args) 1951 { 1952 struct xdr_stream xdr; 1953 struct compound_hdr hdr = { 1954 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 1955 }; 1956 1957 xdr_init_encode(&xdr, &req->rq_snd_buf, p); 1958 encode_compound_hdr(&xdr, req, &hdr); 1959 encode_sequence(&xdr, &args->seq_args, &hdr); 1960 encode_putfh(&xdr, args->fh, &hdr); 1961 encode_open(&xdr, args, &hdr); 1962 encode_getfattr(&xdr, args->bitmask, &hdr); 1963 encode_nops(&hdr); 1964 return 0; 1965 } 1966 1967 /* 1968 * Encode an OPEN_DOWNGRADE request 1969 */ 1970 static int nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req, __be32 *p, struct nfs_closeargs *args) 1971 { 1972 struct xdr_stream xdr; 1973 struct compound_hdr hdr = { 1974 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 1975 }; 1976 1977 xdr_init_encode(&xdr, &req->rq_snd_buf, p); 1978 encode_compound_hdr(&xdr, req, &hdr); 1979 encode_sequence(&xdr, &args->seq_args, &hdr); 1980 encode_putfh(&xdr, args->fh, &hdr); 1981 encode_open_downgrade(&xdr, args, &hdr); 1982 encode_getfattr(&xdr, args->bitmask, &hdr); 1983 encode_nops(&hdr); 1984 return 0; 1985 } 1986 1987 /* 1988 * Encode a LOCK request 1989 */ 1990 static int nfs4_xdr_enc_lock(struct rpc_rqst *req, __be32 *p, struct nfs_lock_args *args) 1991 { 1992 struct xdr_stream xdr; 1993 struct compound_hdr hdr = { 1994 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 1995 }; 1996 1997 xdr_init_encode(&xdr, &req->rq_snd_buf, p); 1998 encode_compound_hdr(&xdr, req, &hdr); 1999 encode_sequence(&xdr, &args->seq_args, &hdr); 2000 encode_putfh(&xdr, args->fh, &hdr); 2001 encode_lock(&xdr, args, &hdr); 2002 encode_nops(&hdr); 2003 return 0; 2004 } 2005 2006 /* 2007 * Encode a LOCKT request 2008 */ 2009 static int nfs4_xdr_enc_lockt(struct rpc_rqst *req, __be32 *p, struct nfs_lockt_args *args) 2010 { 2011 struct xdr_stream xdr; 2012 struct compound_hdr hdr = { 2013 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2014 }; 2015 2016 xdr_init_encode(&xdr, &req->rq_snd_buf, p); 2017 encode_compound_hdr(&xdr, req, &hdr); 2018 encode_sequence(&xdr, &args->seq_args, &hdr); 2019 encode_putfh(&xdr, args->fh, &hdr); 2020 encode_lockt(&xdr, args, &hdr); 2021 encode_nops(&hdr); 2022 return 0; 2023 } 2024 2025 /* 2026 * Encode a LOCKU request 2027 */ 2028 static int nfs4_xdr_enc_locku(struct rpc_rqst *req, __be32 *p, struct nfs_locku_args *args) 2029 { 2030 struct xdr_stream xdr; 2031 struct compound_hdr hdr = { 2032 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2033 }; 2034 2035 xdr_init_encode(&xdr, &req->rq_snd_buf, p); 2036 encode_compound_hdr(&xdr, req, &hdr); 2037 encode_sequence(&xdr, &args->seq_args, &hdr); 2038 encode_putfh(&xdr, args->fh, &hdr); 2039 encode_locku(&xdr, args, &hdr); 2040 encode_nops(&hdr); 2041 return 0; 2042 } 2043 2044 /* 2045 * Encode a READLINK request 2046 */ 2047 static int nfs4_xdr_enc_readlink(struct rpc_rqst *req, __be32 *p, const struct nfs4_readlink *args) 2048 { 2049 struct xdr_stream xdr; 2050 struct compound_hdr hdr = { 2051 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2052 }; 2053 2054 xdr_init_encode(&xdr, &req->rq_snd_buf, p); 2055 encode_compound_hdr(&xdr, req, &hdr); 2056 encode_sequence(&xdr, &args->seq_args, &hdr); 2057 encode_putfh(&xdr, args->fh, &hdr); 2058 encode_readlink(&xdr, args, req, &hdr); 2059 2060 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages, 2061 args->pgbase, args->pglen); 2062 encode_nops(&hdr); 2063 return 0; 2064 } 2065 2066 /* 2067 * Encode a READDIR request 2068 */ 2069 static int nfs4_xdr_enc_readdir(struct rpc_rqst *req, __be32 *p, const struct nfs4_readdir_arg *args) 2070 { 2071 struct xdr_stream xdr; 2072 struct compound_hdr hdr = { 2073 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2074 }; 2075 2076 xdr_init_encode(&xdr, &req->rq_snd_buf, p); 2077 encode_compound_hdr(&xdr, req, &hdr); 2078 encode_sequence(&xdr, &args->seq_args, &hdr); 2079 encode_putfh(&xdr, args->fh, &hdr); 2080 encode_readdir(&xdr, args, req, &hdr); 2081 2082 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages, 2083 args->pgbase, args->count); 2084 dprintk("%s: inlined page args = (%u, %p, %u, %u)\n", 2085 __func__, hdr.replen << 2, args->pages, 2086 args->pgbase, args->count); 2087 encode_nops(&hdr); 2088 return 0; 2089 } 2090 2091 /* 2092 * Encode a READ request 2093 */ 2094 static int nfs4_xdr_enc_read(struct rpc_rqst *req, __be32 *p, struct nfs_readargs *args) 2095 { 2096 struct xdr_stream xdr; 2097 struct compound_hdr hdr = { 2098 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2099 }; 2100 2101 xdr_init_encode(&xdr, &req->rq_snd_buf, p); 2102 encode_compound_hdr(&xdr, req, &hdr); 2103 encode_sequence(&xdr, &args->seq_args, &hdr); 2104 encode_putfh(&xdr, args->fh, &hdr); 2105 encode_read(&xdr, args, &hdr); 2106 2107 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, 2108 args->pages, args->pgbase, args->count); 2109 req->rq_rcv_buf.flags |= XDRBUF_READ; 2110 encode_nops(&hdr); 2111 return 0; 2112 } 2113 2114 /* 2115 * Encode an SETATTR request 2116 */ 2117 static int nfs4_xdr_enc_setattr(struct rpc_rqst *req, __be32 *p, struct nfs_setattrargs *args) 2118 { 2119 struct xdr_stream xdr; 2120 struct compound_hdr hdr = { 2121 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2122 }; 2123 2124 xdr_init_encode(&xdr, &req->rq_snd_buf, p); 2125 encode_compound_hdr(&xdr, req, &hdr); 2126 encode_sequence(&xdr, &args->seq_args, &hdr); 2127 encode_putfh(&xdr, args->fh, &hdr); 2128 encode_setattr(&xdr, args, args->server, &hdr); 2129 encode_getfattr(&xdr, args->bitmask, &hdr); 2130 encode_nops(&hdr); 2131 return 0; 2132 } 2133 2134 /* 2135 * Encode a GETACL request 2136 */ 2137 static int 2138 nfs4_xdr_enc_getacl(struct rpc_rqst *req, __be32 *p, 2139 struct nfs_getaclargs *args) 2140 { 2141 struct xdr_stream xdr; 2142 struct compound_hdr hdr = { 2143 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2144 }; 2145 uint32_t replen; 2146 2147 xdr_init_encode(&xdr, &req->rq_snd_buf, p); 2148 encode_compound_hdr(&xdr, req, &hdr); 2149 encode_sequence(&xdr, &args->seq_args, &hdr); 2150 encode_putfh(&xdr, args->fh, &hdr); 2151 replen = hdr.replen + op_decode_hdr_maxsz + nfs4_fattr_bitmap_maxsz + 1; 2152 encode_getattr_two(&xdr, FATTR4_WORD0_ACL, 0, &hdr); 2153 2154 xdr_inline_pages(&req->rq_rcv_buf, replen << 2, 2155 args->acl_pages, args->acl_pgbase, args->acl_len); 2156 encode_nops(&hdr); 2157 return 0; 2158 } 2159 2160 /* 2161 * Encode a WRITE request 2162 */ 2163 static int nfs4_xdr_enc_write(struct rpc_rqst *req, __be32 *p, struct nfs_writeargs *args) 2164 { 2165 struct xdr_stream xdr; 2166 struct compound_hdr hdr = { 2167 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2168 }; 2169 2170 xdr_init_encode(&xdr, &req->rq_snd_buf, p); 2171 encode_compound_hdr(&xdr, req, &hdr); 2172 encode_sequence(&xdr, &args->seq_args, &hdr); 2173 encode_putfh(&xdr, args->fh, &hdr); 2174 encode_write(&xdr, args, &hdr); 2175 req->rq_snd_buf.flags |= XDRBUF_WRITE; 2176 encode_getfattr(&xdr, args->bitmask, &hdr); 2177 encode_nops(&hdr); 2178 return 0; 2179 } 2180 2181 /* 2182 * a COMMIT request 2183 */ 2184 static int nfs4_xdr_enc_commit(struct rpc_rqst *req, __be32 *p, struct nfs_writeargs *args) 2185 { 2186 struct xdr_stream xdr; 2187 struct compound_hdr hdr = { 2188 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2189 }; 2190 2191 xdr_init_encode(&xdr, &req->rq_snd_buf, p); 2192 encode_compound_hdr(&xdr, req, &hdr); 2193 encode_sequence(&xdr, &args->seq_args, &hdr); 2194 encode_putfh(&xdr, args->fh, &hdr); 2195 encode_commit(&xdr, args, &hdr); 2196 encode_getfattr(&xdr, args->bitmask, &hdr); 2197 encode_nops(&hdr); 2198 return 0; 2199 } 2200 2201 /* 2202 * FSINFO request 2203 */ 2204 static int nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, __be32 *p, struct nfs4_fsinfo_arg *args) 2205 { 2206 struct xdr_stream xdr; 2207 struct compound_hdr hdr = { 2208 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2209 }; 2210 2211 xdr_init_encode(&xdr, &req->rq_snd_buf, p); 2212 encode_compound_hdr(&xdr, req, &hdr); 2213 encode_sequence(&xdr, &args->seq_args, &hdr); 2214 encode_putfh(&xdr, args->fh, &hdr); 2215 encode_fsinfo(&xdr, args->bitmask, &hdr); 2216 encode_nops(&hdr); 2217 return 0; 2218 } 2219 2220 /* 2221 * a PATHCONF request 2222 */ 2223 static int nfs4_xdr_enc_pathconf(struct rpc_rqst *req, __be32 *p, const struct nfs4_pathconf_arg *args) 2224 { 2225 struct xdr_stream xdr; 2226 struct compound_hdr hdr = { 2227 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2228 }; 2229 2230 xdr_init_encode(&xdr, &req->rq_snd_buf, p); 2231 encode_compound_hdr(&xdr, req, &hdr); 2232 encode_sequence(&xdr, &args->seq_args, &hdr); 2233 encode_putfh(&xdr, args->fh, &hdr); 2234 encode_getattr_one(&xdr, args->bitmask[0] & nfs4_pathconf_bitmap[0], 2235 &hdr); 2236 encode_nops(&hdr); 2237 return 0; 2238 } 2239 2240 /* 2241 * a STATFS request 2242 */ 2243 static int nfs4_xdr_enc_statfs(struct rpc_rqst *req, __be32 *p, const struct nfs4_statfs_arg *args) 2244 { 2245 struct xdr_stream xdr; 2246 struct compound_hdr hdr = { 2247 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2248 }; 2249 2250 xdr_init_encode(&xdr, &req->rq_snd_buf, p); 2251 encode_compound_hdr(&xdr, req, &hdr); 2252 encode_sequence(&xdr, &args->seq_args, &hdr); 2253 encode_putfh(&xdr, args->fh, &hdr); 2254 encode_getattr_two(&xdr, args->bitmask[0] & nfs4_statfs_bitmap[0], 2255 args->bitmask[1] & nfs4_statfs_bitmap[1], &hdr); 2256 encode_nops(&hdr); 2257 return 0; 2258 } 2259 2260 /* 2261 * GETATTR_BITMAP request 2262 */ 2263 static int nfs4_xdr_enc_server_caps(struct rpc_rqst *req, __be32 *p, 2264 struct nfs4_server_caps_arg *args) 2265 { 2266 struct xdr_stream xdr; 2267 struct compound_hdr hdr = { 2268 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2269 }; 2270 2271 xdr_init_encode(&xdr, &req->rq_snd_buf, p); 2272 encode_compound_hdr(&xdr, req, &hdr); 2273 encode_sequence(&xdr, &args->seq_args, &hdr); 2274 encode_putfh(&xdr, args->fhandle, &hdr); 2275 encode_getattr_one(&xdr, FATTR4_WORD0_SUPPORTED_ATTRS| 2276 FATTR4_WORD0_LINK_SUPPORT| 2277 FATTR4_WORD0_SYMLINK_SUPPORT| 2278 FATTR4_WORD0_ACLSUPPORT, &hdr); 2279 encode_nops(&hdr); 2280 return 0; 2281 } 2282 2283 /* 2284 * a RENEW request 2285 */ 2286 static int nfs4_xdr_enc_renew(struct rpc_rqst *req, __be32 *p, struct nfs_client *clp) 2287 { 2288 struct xdr_stream xdr; 2289 struct compound_hdr hdr = { 2290 .nops = 0, 2291 }; 2292 2293 xdr_init_encode(&xdr, &req->rq_snd_buf, p); 2294 encode_compound_hdr(&xdr, req, &hdr); 2295 encode_renew(&xdr, clp, &hdr); 2296 encode_nops(&hdr); 2297 return 0; 2298 } 2299 2300 /* 2301 * a SETCLIENTID request 2302 */ 2303 static int nfs4_xdr_enc_setclientid(struct rpc_rqst *req, __be32 *p, struct nfs4_setclientid *sc) 2304 { 2305 struct xdr_stream xdr; 2306 struct compound_hdr hdr = { 2307 .nops = 0, 2308 }; 2309 2310 xdr_init_encode(&xdr, &req->rq_snd_buf, p); 2311 encode_compound_hdr(&xdr, req, &hdr); 2312 encode_setclientid(&xdr, sc, &hdr); 2313 encode_nops(&hdr); 2314 return 0; 2315 } 2316 2317 /* 2318 * a SETCLIENTID_CONFIRM request 2319 */ 2320 static int nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req, __be32 *p, struct nfs_client *clp) 2321 { 2322 struct xdr_stream xdr; 2323 struct compound_hdr hdr = { 2324 .nops = 0, 2325 }; 2326 const u32 lease_bitmap[2] = { FATTR4_WORD0_LEASE_TIME, 0 }; 2327 2328 xdr_init_encode(&xdr, &req->rq_snd_buf, p); 2329 encode_compound_hdr(&xdr, req, &hdr); 2330 encode_setclientid_confirm(&xdr, clp, &hdr); 2331 encode_putrootfh(&xdr, &hdr); 2332 encode_fsinfo(&xdr, lease_bitmap, &hdr); 2333 encode_nops(&hdr); 2334 return 0; 2335 } 2336 2337 /* 2338 * DELEGRETURN request 2339 */ 2340 static int nfs4_xdr_enc_delegreturn(struct rpc_rqst *req, __be32 *p, const struct nfs4_delegreturnargs *args) 2341 { 2342 struct xdr_stream xdr; 2343 struct compound_hdr hdr = { 2344 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2345 }; 2346 2347 xdr_init_encode(&xdr, &req->rq_snd_buf, p); 2348 encode_compound_hdr(&xdr, req, &hdr); 2349 encode_sequence(&xdr, &args->seq_args, &hdr); 2350 encode_putfh(&xdr, args->fhandle, &hdr); 2351 encode_delegreturn(&xdr, args->stateid, &hdr); 2352 encode_getfattr(&xdr, args->bitmask, &hdr); 2353 encode_nops(&hdr); 2354 return 0; 2355 } 2356 2357 /* 2358 * Encode FS_LOCATIONS request 2359 */ 2360 static int nfs4_xdr_enc_fs_locations(struct rpc_rqst *req, __be32 *p, struct nfs4_fs_locations_arg *args) 2361 { 2362 struct xdr_stream xdr; 2363 struct compound_hdr hdr = { 2364 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2365 }; 2366 uint32_t replen; 2367 2368 xdr_init_encode(&xdr, &req->rq_snd_buf, p); 2369 encode_compound_hdr(&xdr, req, &hdr); 2370 encode_sequence(&xdr, &args->seq_args, &hdr); 2371 encode_putfh(&xdr, args->dir_fh, &hdr); 2372 encode_lookup(&xdr, args->name, &hdr); 2373 replen = hdr.replen; /* get the attribute into args->page */ 2374 encode_fs_locations(&xdr, args->bitmask, &hdr); 2375 2376 xdr_inline_pages(&req->rq_rcv_buf, replen << 2, &args->page, 2377 0, PAGE_SIZE); 2378 encode_nops(&hdr); 2379 return 0; 2380 } 2381 2382 #if defined(CONFIG_NFS_V4_1) 2383 /* 2384 * EXCHANGE_ID request 2385 */ 2386 static int nfs4_xdr_enc_exchange_id(struct rpc_rqst *req, uint32_t *p, 2387 struct nfs41_exchange_id_args *args) 2388 { 2389 struct xdr_stream xdr; 2390 struct compound_hdr hdr = { 2391 .minorversion = args->client->cl_minorversion, 2392 }; 2393 2394 xdr_init_encode(&xdr, &req->rq_snd_buf, p); 2395 encode_compound_hdr(&xdr, req, &hdr); 2396 encode_exchange_id(&xdr, args, &hdr); 2397 encode_nops(&hdr); 2398 return 0; 2399 } 2400 2401 /* 2402 * a CREATE_SESSION request 2403 */ 2404 static int nfs4_xdr_enc_create_session(struct rpc_rqst *req, uint32_t *p, 2405 struct nfs41_create_session_args *args) 2406 { 2407 struct xdr_stream xdr; 2408 struct compound_hdr hdr = { 2409 .minorversion = args->client->cl_minorversion, 2410 }; 2411 2412 xdr_init_encode(&xdr, &req->rq_snd_buf, p); 2413 encode_compound_hdr(&xdr, req, &hdr); 2414 encode_create_session(&xdr, args, &hdr); 2415 encode_nops(&hdr); 2416 return 0; 2417 } 2418 2419 /* 2420 * a DESTROY_SESSION request 2421 */ 2422 static int nfs4_xdr_enc_destroy_session(struct rpc_rqst *req, uint32_t *p, 2423 struct nfs4_session *session) 2424 { 2425 struct xdr_stream xdr; 2426 struct compound_hdr hdr = { 2427 .minorversion = session->clp->cl_minorversion, 2428 }; 2429 2430 xdr_init_encode(&xdr, &req->rq_snd_buf, p); 2431 encode_compound_hdr(&xdr, req, &hdr); 2432 encode_destroy_session(&xdr, session, &hdr); 2433 encode_nops(&hdr); 2434 return 0; 2435 } 2436 2437 /* 2438 * a SEQUENCE request 2439 */ 2440 static int nfs4_xdr_enc_sequence(struct rpc_rqst *req, uint32_t *p, 2441 struct nfs4_sequence_args *args) 2442 { 2443 struct xdr_stream xdr; 2444 struct compound_hdr hdr = { 2445 .minorversion = nfs4_xdr_minorversion(args), 2446 }; 2447 2448 xdr_init_encode(&xdr, &req->rq_snd_buf, p); 2449 encode_compound_hdr(&xdr, req, &hdr); 2450 encode_sequence(&xdr, args, &hdr); 2451 encode_nops(&hdr); 2452 return 0; 2453 } 2454 2455 /* 2456 * a GET_LEASE_TIME request 2457 */ 2458 static int nfs4_xdr_enc_get_lease_time(struct rpc_rqst *req, uint32_t *p, 2459 struct nfs4_get_lease_time_args *args) 2460 { 2461 struct xdr_stream xdr; 2462 struct compound_hdr hdr = { 2463 .minorversion = nfs4_xdr_minorversion(&args->la_seq_args), 2464 }; 2465 const u32 lease_bitmap[2] = { FATTR4_WORD0_LEASE_TIME, 0 }; 2466 2467 xdr_init_encode(&xdr, &req->rq_snd_buf, p); 2468 encode_compound_hdr(&xdr, req, &hdr); 2469 encode_sequence(&xdr, &args->la_seq_args, &hdr); 2470 encode_putrootfh(&xdr, &hdr); 2471 encode_fsinfo(&xdr, lease_bitmap, &hdr); 2472 encode_nops(&hdr); 2473 return 0; 2474 } 2475 2476 /* 2477 * a RECLAIM_COMPLETE request 2478 */ 2479 static int nfs4_xdr_enc_reclaim_complete(struct rpc_rqst *req, uint32_t *p, 2480 struct nfs41_reclaim_complete_args *args) 2481 { 2482 struct xdr_stream xdr; 2483 struct compound_hdr hdr = { 2484 .minorversion = nfs4_xdr_minorversion(&args->seq_args) 2485 }; 2486 2487 xdr_init_encode(&xdr, &req->rq_snd_buf, p); 2488 encode_compound_hdr(&xdr, req, &hdr); 2489 encode_sequence(&xdr, &args->seq_args, &hdr); 2490 encode_reclaim_complete(&xdr, args, &hdr); 2491 encode_nops(&hdr); 2492 return 0; 2493 } 2494 2495 #endif /* CONFIG_NFS_V4_1 */ 2496 2497 static void print_overflow_msg(const char *func, const struct xdr_stream *xdr) 2498 { 2499 dprintk("nfs: %s: prematurely hit end of receive buffer. " 2500 "Remaining buffer length is %tu words.\n", 2501 func, xdr->end - xdr->p); 2502 } 2503 2504 static int decode_opaque_inline(struct xdr_stream *xdr, unsigned int *len, char **string) 2505 { 2506 __be32 *p; 2507 2508 p = xdr_inline_decode(xdr, 4); 2509 if (unlikely(!p)) 2510 goto out_overflow; 2511 *len = be32_to_cpup(p); 2512 p = xdr_inline_decode(xdr, *len); 2513 if (unlikely(!p)) 2514 goto out_overflow; 2515 *string = (char *)p; 2516 return 0; 2517 out_overflow: 2518 print_overflow_msg(__func__, xdr); 2519 return -EIO; 2520 } 2521 2522 static int decode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr) 2523 { 2524 __be32 *p; 2525 2526 p = xdr_inline_decode(xdr, 8); 2527 if (unlikely(!p)) 2528 goto out_overflow; 2529 hdr->status = be32_to_cpup(p++); 2530 hdr->taglen = be32_to_cpup(p); 2531 2532 p = xdr_inline_decode(xdr, hdr->taglen + 4); 2533 if (unlikely(!p)) 2534 goto out_overflow; 2535 hdr->tag = (char *)p; 2536 p += XDR_QUADLEN(hdr->taglen); 2537 hdr->nops = be32_to_cpup(p); 2538 if (unlikely(hdr->nops < 1)) 2539 return nfs4_stat_to_errno(hdr->status); 2540 return 0; 2541 out_overflow: 2542 print_overflow_msg(__func__, xdr); 2543 return -EIO; 2544 } 2545 2546 static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected) 2547 { 2548 __be32 *p; 2549 uint32_t opnum; 2550 int32_t nfserr; 2551 2552 p = xdr_inline_decode(xdr, 8); 2553 if (unlikely(!p)) 2554 goto out_overflow; 2555 opnum = be32_to_cpup(p++); 2556 if (opnum != expected) { 2557 dprintk("nfs: Server returned operation" 2558 " %d but we issued a request for %d\n", 2559 opnum, expected); 2560 return -EIO; 2561 } 2562 nfserr = be32_to_cpup(p); 2563 if (nfserr != NFS_OK) 2564 return nfs4_stat_to_errno(nfserr); 2565 return 0; 2566 out_overflow: 2567 print_overflow_msg(__func__, xdr); 2568 return -EIO; 2569 } 2570 2571 /* Dummy routine */ 2572 static int decode_ace(struct xdr_stream *xdr, void *ace, struct nfs_client *clp) 2573 { 2574 __be32 *p; 2575 unsigned int strlen; 2576 char *str; 2577 2578 p = xdr_inline_decode(xdr, 12); 2579 if (likely(p)) 2580 return decode_opaque_inline(xdr, &strlen, &str); 2581 print_overflow_msg(__func__, xdr); 2582 return -EIO; 2583 } 2584 2585 static int decode_attr_bitmap(struct xdr_stream *xdr, uint32_t *bitmap) 2586 { 2587 uint32_t bmlen; 2588 __be32 *p; 2589 2590 p = xdr_inline_decode(xdr, 4); 2591 if (unlikely(!p)) 2592 goto out_overflow; 2593 bmlen = be32_to_cpup(p); 2594 2595 bitmap[0] = bitmap[1] = 0; 2596 p = xdr_inline_decode(xdr, (bmlen << 2)); 2597 if (unlikely(!p)) 2598 goto out_overflow; 2599 if (bmlen > 0) { 2600 bitmap[0] = be32_to_cpup(p++); 2601 if (bmlen > 1) 2602 bitmap[1] = be32_to_cpup(p); 2603 } 2604 return 0; 2605 out_overflow: 2606 print_overflow_msg(__func__, xdr); 2607 return -EIO; 2608 } 2609 2610 static inline int decode_attr_length(struct xdr_stream *xdr, uint32_t *attrlen, __be32 **savep) 2611 { 2612 __be32 *p; 2613 2614 p = xdr_inline_decode(xdr, 4); 2615 if (unlikely(!p)) 2616 goto out_overflow; 2617 *attrlen = be32_to_cpup(p); 2618 *savep = xdr->p; 2619 return 0; 2620 out_overflow: 2621 print_overflow_msg(__func__, xdr); 2622 return -EIO; 2623 } 2624 2625 static int decode_attr_supported(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *bitmask) 2626 { 2627 if (likely(bitmap[0] & FATTR4_WORD0_SUPPORTED_ATTRS)) { 2628 decode_attr_bitmap(xdr, bitmask); 2629 bitmap[0] &= ~FATTR4_WORD0_SUPPORTED_ATTRS; 2630 } else 2631 bitmask[0] = bitmask[1] = 0; 2632 dprintk("%s: bitmask=%08x:%08x\n", __func__, bitmask[0], bitmask[1]); 2633 return 0; 2634 } 2635 2636 static int decode_attr_type(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *type) 2637 { 2638 __be32 *p; 2639 int ret = 0; 2640 2641 *type = 0; 2642 if (unlikely(bitmap[0] & (FATTR4_WORD0_TYPE - 1U))) 2643 return -EIO; 2644 if (likely(bitmap[0] & FATTR4_WORD0_TYPE)) { 2645 p = xdr_inline_decode(xdr, 4); 2646 if (unlikely(!p)) 2647 goto out_overflow; 2648 *type = be32_to_cpup(p); 2649 if (*type < NF4REG || *type > NF4NAMEDATTR) { 2650 dprintk("%s: bad type %d\n", __func__, *type); 2651 return -EIO; 2652 } 2653 bitmap[0] &= ~FATTR4_WORD0_TYPE; 2654 ret = NFS_ATTR_FATTR_TYPE; 2655 } 2656 dprintk("%s: type=0%o\n", __func__, nfs_type2fmt[*type]); 2657 return ret; 2658 out_overflow: 2659 print_overflow_msg(__func__, xdr); 2660 return -EIO; 2661 } 2662 2663 static int decode_attr_change(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *change) 2664 { 2665 __be32 *p; 2666 int ret = 0; 2667 2668 *change = 0; 2669 if (unlikely(bitmap[0] & (FATTR4_WORD0_CHANGE - 1U))) 2670 return -EIO; 2671 if (likely(bitmap[0] & FATTR4_WORD0_CHANGE)) { 2672 p = xdr_inline_decode(xdr, 8); 2673 if (unlikely(!p)) 2674 goto out_overflow; 2675 xdr_decode_hyper(p, change); 2676 bitmap[0] &= ~FATTR4_WORD0_CHANGE; 2677 ret = NFS_ATTR_FATTR_CHANGE; 2678 } 2679 dprintk("%s: change attribute=%Lu\n", __func__, 2680 (unsigned long long)*change); 2681 return ret; 2682 out_overflow: 2683 print_overflow_msg(__func__, xdr); 2684 return -EIO; 2685 } 2686 2687 static int decode_attr_size(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *size) 2688 { 2689 __be32 *p; 2690 int ret = 0; 2691 2692 *size = 0; 2693 if (unlikely(bitmap[0] & (FATTR4_WORD0_SIZE - 1U))) 2694 return -EIO; 2695 if (likely(bitmap[0] & FATTR4_WORD0_SIZE)) { 2696 p = xdr_inline_decode(xdr, 8); 2697 if (unlikely(!p)) 2698 goto out_overflow; 2699 xdr_decode_hyper(p, size); 2700 bitmap[0] &= ~FATTR4_WORD0_SIZE; 2701 ret = NFS_ATTR_FATTR_SIZE; 2702 } 2703 dprintk("%s: file size=%Lu\n", __func__, (unsigned long long)*size); 2704 return ret; 2705 out_overflow: 2706 print_overflow_msg(__func__, xdr); 2707 return -EIO; 2708 } 2709 2710 static int decode_attr_link_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) 2711 { 2712 __be32 *p; 2713 2714 *res = 0; 2715 if (unlikely(bitmap[0] & (FATTR4_WORD0_LINK_SUPPORT - 1U))) 2716 return -EIO; 2717 if (likely(bitmap[0] & FATTR4_WORD0_LINK_SUPPORT)) { 2718 p = xdr_inline_decode(xdr, 4); 2719 if (unlikely(!p)) 2720 goto out_overflow; 2721 *res = be32_to_cpup(p); 2722 bitmap[0] &= ~FATTR4_WORD0_LINK_SUPPORT; 2723 } 2724 dprintk("%s: link support=%s\n", __func__, *res == 0 ? "false" : "true"); 2725 return 0; 2726 out_overflow: 2727 print_overflow_msg(__func__, xdr); 2728 return -EIO; 2729 } 2730 2731 static int decode_attr_symlink_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) 2732 { 2733 __be32 *p; 2734 2735 *res = 0; 2736 if (unlikely(bitmap[0] & (FATTR4_WORD0_SYMLINK_SUPPORT - 1U))) 2737 return -EIO; 2738 if (likely(bitmap[0] & FATTR4_WORD0_SYMLINK_SUPPORT)) { 2739 p = xdr_inline_decode(xdr, 4); 2740 if (unlikely(!p)) 2741 goto out_overflow; 2742 *res = be32_to_cpup(p); 2743 bitmap[0] &= ~FATTR4_WORD0_SYMLINK_SUPPORT; 2744 } 2745 dprintk("%s: symlink support=%s\n", __func__, *res == 0 ? "false" : "true"); 2746 return 0; 2747 out_overflow: 2748 print_overflow_msg(__func__, xdr); 2749 return -EIO; 2750 } 2751 2752 static int decode_attr_fsid(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fsid *fsid) 2753 { 2754 __be32 *p; 2755 int ret = 0; 2756 2757 fsid->major = 0; 2758 fsid->minor = 0; 2759 if (unlikely(bitmap[0] & (FATTR4_WORD0_FSID - 1U))) 2760 return -EIO; 2761 if (likely(bitmap[0] & FATTR4_WORD0_FSID)) { 2762 p = xdr_inline_decode(xdr, 16); 2763 if (unlikely(!p)) 2764 goto out_overflow; 2765 p = xdr_decode_hyper(p, &fsid->major); 2766 xdr_decode_hyper(p, &fsid->minor); 2767 bitmap[0] &= ~FATTR4_WORD0_FSID; 2768 ret = NFS_ATTR_FATTR_FSID; 2769 } 2770 dprintk("%s: fsid=(0x%Lx/0x%Lx)\n", __func__, 2771 (unsigned long long)fsid->major, 2772 (unsigned long long)fsid->minor); 2773 return ret; 2774 out_overflow: 2775 print_overflow_msg(__func__, xdr); 2776 return -EIO; 2777 } 2778 2779 static int decode_attr_lease_time(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) 2780 { 2781 __be32 *p; 2782 2783 *res = 60; 2784 if (unlikely(bitmap[0] & (FATTR4_WORD0_LEASE_TIME - 1U))) 2785 return -EIO; 2786 if (likely(bitmap[0] & FATTR4_WORD0_LEASE_TIME)) { 2787 p = xdr_inline_decode(xdr, 4); 2788 if (unlikely(!p)) 2789 goto out_overflow; 2790 *res = be32_to_cpup(p); 2791 bitmap[0] &= ~FATTR4_WORD0_LEASE_TIME; 2792 } 2793 dprintk("%s: file size=%u\n", __func__, (unsigned int)*res); 2794 return 0; 2795 out_overflow: 2796 print_overflow_msg(__func__, xdr); 2797 return -EIO; 2798 } 2799 2800 static int decode_attr_aclsupport(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) 2801 { 2802 __be32 *p; 2803 2804 *res = ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL; 2805 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACLSUPPORT - 1U))) 2806 return -EIO; 2807 if (likely(bitmap[0] & FATTR4_WORD0_ACLSUPPORT)) { 2808 p = xdr_inline_decode(xdr, 4); 2809 if (unlikely(!p)) 2810 goto out_overflow; 2811 *res = be32_to_cpup(p); 2812 bitmap[0] &= ~FATTR4_WORD0_ACLSUPPORT; 2813 } 2814 dprintk("%s: ACLs supported=%u\n", __func__, (unsigned int)*res); 2815 return 0; 2816 out_overflow: 2817 print_overflow_msg(__func__, xdr); 2818 return -EIO; 2819 } 2820 2821 static int decode_attr_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid) 2822 { 2823 __be32 *p; 2824 int ret = 0; 2825 2826 *fileid = 0; 2827 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEID - 1U))) 2828 return -EIO; 2829 if (likely(bitmap[0] & FATTR4_WORD0_FILEID)) { 2830 p = xdr_inline_decode(xdr, 8); 2831 if (unlikely(!p)) 2832 goto out_overflow; 2833 xdr_decode_hyper(p, fileid); 2834 bitmap[0] &= ~FATTR4_WORD0_FILEID; 2835 ret = NFS_ATTR_FATTR_FILEID; 2836 } 2837 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid); 2838 return ret; 2839 out_overflow: 2840 print_overflow_msg(__func__, xdr); 2841 return -EIO; 2842 } 2843 2844 static int decode_attr_mounted_on_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid) 2845 { 2846 __be32 *p; 2847 int ret = 0; 2848 2849 *fileid = 0; 2850 if (unlikely(bitmap[1] & (FATTR4_WORD1_MOUNTED_ON_FILEID - 1U))) 2851 return -EIO; 2852 if (likely(bitmap[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)) { 2853 p = xdr_inline_decode(xdr, 8); 2854 if (unlikely(!p)) 2855 goto out_overflow; 2856 xdr_decode_hyper(p, fileid); 2857 bitmap[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID; 2858 ret = NFS_ATTR_FATTR_FILEID; 2859 } 2860 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid); 2861 return ret; 2862 out_overflow: 2863 print_overflow_msg(__func__, xdr); 2864 return -EIO; 2865 } 2866 2867 static int decode_attr_files_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 2868 { 2869 __be32 *p; 2870 int status = 0; 2871 2872 *res = 0; 2873 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_AVAIL - 1U))) 2874 return -EIO; 2875 if (likely(bitmap[0] & FATTR4_WORD0_FILES_AVAIL)) { 2876 p = xdr_inline_decode(xdr, 8); 2877 if (unlikely(!p)) 2878 goto out_overflow; 2879 xdr_decode_hyper(p, res); 2880 bitmap[0] &= ~FATTR4_WORD0_FILES_AVAIL; 2881 } 2882 dprintk("%s: files avail=%Lu\n", __func__, (unsigned long long)*res); 2883 return status; 2884 out_overflow: 2885 print_overflow_msg(__func__, xdr); 2886 return -EIO; 2887 } 2888 2889 static int decode_attr_files_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 2890 { 2891 __be32 *p; 2892 int status = 0; 2893 2894 *res = 0; 2895 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_FREE - 1U))) 2896 return -EIO; 2897 if (likely(bitmap[0] & FATTR4_WORD0_FILES_FREE)) { 2898 p = xdr_inline_decode(xdr, 8); 2899 if (unlikely(!p)) 2900 goto out_overflow; 2901 xdr_decode_hyper(p, res); 2902 bitmap[0] &= ~FATTR4_WORD0_FILES_FREE; 2903 } 2904 dprintk("%s: files free=%Lu\n", __func__, (unsigned long long)*res); 2905 return status; 2906 out_overflow: 2907 print_overflow_msg(__func__, xdr); 2908 return -EIO; 2909 } 2910 2911 static int decode_attr_files_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 2912 { 2913 __be32 *p; 2914 int status = 0; 2915 2916 *res = 0; 2917 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_TOTAL - 1U))) 2918 return -EIO; 2919 if (likely(bitmap[0] & FATTR4_WORD0_FILES_TOTAL)) { 2920 p = xdr_inline_decode(xdr, 8); 2921 if (unlikely(!p)) 2922 goto out_overflow; 2923 xdr_decode_hyper(p, res); 2924 bitmap[0] &= ~FATTR4_WORD0_FILES_TOTAL; 2925 } 2926 dprintk("%s: files total=%Lu\n", __func__, (unsigned long long)*res); 2927 return status; 2928 out_overflow: 2929 print_overflow_msg(__func__, xdr); 2930 return -EIO; 2931 } 2932 2933 static int decode_pathname(struct xdr_stream *xdr, struct nfs4_pathname *path) 2934 { 2935 u32 n; 2936 __be32 *p; 2937 int status = 0; 2938 2939 p = xdr_inline_decode(xdr, 4); 2940 if (unlikely(!p)) 2941 goto out_overflow; 2942 n = be32_to_cpup(p); 2943 if (n == 0) 2944 goto root_path; 2945 dprintk("path "); 2946 path->ncomponents = 0; 2947 while (path->ncomponents < n) { 2948 struct nfs4_string *component = &path->components[path->ncomponents]; 2949 status = decode_opaque_inline(xdr, &component->len, &component->data); 2950 if (unlikely(status != 0)) 2951 goto out_eio; 2952 if (path->ncomponents != n) 2953 dprintk("/"); 2954 dprintk("%s", component->data); 2955 if (path->ncomponents < NFS4_PATHNAME_MAXCOMPONENTS) 2956 path->ncomponents++; 2957 else { 2958 dprintk("cannot parse %d components in path\n", n); 2959 goto out_eio; 2960 } 2961 } 2962 out: 2963 dprintk("\n"); 2964 return status; 2965 root_path: 2966 /* a root pathname is sent as a zero component4 */ 2967 path->ncomponents = 1; 2968 path->components[0].len=0; 2969 path->components[0].data=NULL; 2970 dprintk("path /\n"); 2971 goto out; 2972 out_eio: 2973 dprintk(" status %d", status); 2974 status = -EIO; 2975 goto out; 2976 out_overflow: 2977 print_overflow_msg(__func__, xdr); 2978 return -EIO; 2979 } 2980 2981 static int decode_attr_fs_locations(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_fs_locations *res) 2982 { 2983 int n; 2984 __be32 *p; 2985 int status = -EIO; 2986 2987 if (unlikely(bitmap[0] & (FATTR4_WORD0_FS_LOCATIONS -1U))) 2988 goto out; 2989 status = 0; 2990 if (unlikely(!(bitmap[0] & FATTR4_WORD0_FS_LOCATIONS))) 2991 goto out; 2992 dprintk("%s: fsroot ", __func__); 2993 status = decode_pathname(xdr, &res->fs_path); 2994 if (unlikely(status != 0)) 2995 goto out; 2996 p = xdr_inline_decode(xdr, 4); 2997 if (unlikely(!p)) 2998 goto out_overflow; 2999 n = be32_to_cpup(p); 3000 if (n <= 0) 3001 goto out_eio; 3002 res->nlocations = 0; 3003 while (res->nlocations < n) { 3004 u32 m; 3005 struct nfs4_fs_location *loc = &res->locations[res->nlocations]; 3006 3007 p = xdr_inline_decode(xdr, 4); 3008 if (unlikely(!p)) 3009 goto out_overflow; 3010 m = be32_to_cpup(p); 3011 3012 loc->nservers = 0; 3013 dprintk("%s: servers ", __func__); 3014 while (loc->nservers < m) { 3015 struct nfs4_string *server = &loc->servers[loc->nservers]; 3016 status = decode_opaque_inline(xdr, &server->len, &server->data); 3017 if (unlikely(status != 0)) 3018 goto out_eio; 3019 dprintk("%s ", server->data); 3020 if (loc->nservers < NFS4_FS_LOCATION_MAXSERVERS) 3021 loc->nservers++; 3022 else { 3023 unsigned int i; 3024 dprintk("%s: using first %u of %u servers " 3025 "returned for location %u\n", 3026 __func__, 3027 NFS4_FS_LOCATION_MAXSERVERS, 3028 m, res->nlocations); 3029 for (i = loc->nservers; i < m; i++) { 3030 unsigned int len; 3031 char *data; 3032 status = decode_opaque_inline(xdr, &len, &data); 3033 if (unlikely(status != 0)) 3034 goto out_eio; 3035 } 3036 } 3037 } 3038 status = decode_pathname(xdr, &loc->rootpath); 3039 if (unlikely(status != 0)) 3040 goto out_eio; 3041 if (res->nlocations < NFS4_FS_LOCATIONS_MAXENTRIES) 3042 res->nlocations++; 3043 } 3044 if (res->nlocations != 0) 3045 status = NFS_ATTR_FATTR_V4_REFERRAL; 3046 out: 3047 dprintk("%s: fs_locations done, error = %d\n", __func__, status); 3048 return status; 3049 out_overflow: 3050 print_overflow_msg(__func__, xdr); 3051 out_eio: 3052 status = -EIO; 3053 goto out; 3054 } 3055 3056 static int decode_attr_maxfilesize(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 3057 { 3058 __be32 *p; 3059 int status = 0; 3060 3061 *res = 0; 3062 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXFILESIZE - 1U))) 3063 return -EIO; 3064 if (likely(bitmap[0] & FATTR4_WORD0_MAXFILESIZE)) { 3065 p = xdr_inline_decode(xdr, 8); 3066 if (unlikely(!p)) 3067 goto out_overflow; 3068 xdr_decode_hyper(p, res); 3069 bitmap[0] &= ~FATTR4_WORD0_MAXFILESIZE; 3070 } 3071 dprintk("%s: maxfilesize=%Lu\n", __func__, (unsigned long long)*res); 3072 return status; 3073 out_overflow: 3074 print_overflow_msg(__func__, xdr); 3075 return -EIO; 3076 } 3077 3078 static int decode_attr_maxlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxlink) 3079 { 3080 __be32 *p; 3081 int status = 0; 3082 3083 *maxlink = 1; 3084 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXLINK - 1U))) 3085 return -EIO; 3086 if (likely(bitmap[0] & FATTR4_WORD0_MAXLINK)) { 3087 p = xdr_inline_decode(xdr, 4); 3088 if (unlikely(!p)) 3089 goto out_overflow; 3090 *maxlink = be32_to_cpup(p); 3091 bitmap[0] &= ~FATTR4_WORD0_MAXLINK; 3092 } 3093 dprintk("%s: maxlink=%u\n", __func__, *maxlink); 3094 return status; 3095 out_overflow: 3096 print_overflow_msg(__func__, xdr); 3097 return -EIO; 3098 } 3099 3100 static int decode_attr_maxname(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxname) 3101 { 3102 __be32 *p; 3103 int status = 0; 3104 3105 *maxname = 1024; 3106 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXNAME - 1U))) 3107 return -EIO; 3108 if (likely(bitmap[0] & FATTR4_WORD0_MAXNAME)) { 3109 p = xdr_inline_decode(xdr, 4); 3110 if (unlikely(!p)) 3111 goto out_overflow; 3112 *maxname = be32_to_cpup(p); 3113 bitmap[0] &= ~FATTR4_WORD0_MAXNAME; 3114 } 3115 dprintk("%s: maxname=%u\n", __func__, *maxname); 3116 return status; 3117 out_overflow: 3118 print_overflow_msg(__func__, xdr); 3119 return -EIO; 3120 } 3121 3122 static int decode_attr_maxread(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) 3123 { 3124 __be32 *p; 3125 int status = 0; 3126 3127 *res = 1024; 3128 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXREAD - 1U))) 3129 return -EIO; 3130 if (likely(bitmap[0] & FATTR4_WORD0_MAXREAD)) { 3131 uint64_t maxread; 3132 p = xdr_inline_decode(xdr, 8); 3133 if (unlikely(!p)) 3134 goto out_overflow; 3135 xdr_decode_hyper(p, &maxread); 3136 if (maxread > 0x7FFFFFFF) 3137 maxread = 0x7FFFFFFF; 3138 *res = (uint32_t)maxread; 3139 bitmap[0] &= ~FATTR4_WORD0_MAXREAD; 3140 } 3141 dprintk("%s: maxread=%lu\n", __func__, (unsigned long)*res); 3142 return status; 3143 out_overflow: 3144 print_overflow_msg(__func__, xdr); 3145 return -EIO; 3146 } 3147 3148 static int decode_attr_maxwrite(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) 3149 { 3150 __be32 *p; 3151 int status = 0; 3152 3153 *res = 1024; 3154 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXWRITE - 1U))) 3155 return -EIO; 3156 if (likely(bitmap[0] & FATTR4_WORD0_MAXWRITE)) { 3157 uint64_t maxwrite; 3158 p = xdr_inline_decode(xdr, 8); 3159 if (unlikely(!p)) 3160 goto out_overflow; 3161 xdr_decode_hyper(p, &maxwrite); 3162 if (maxwrite > 0x7FFFFFFF) 3163 maxwrite = 0x7FFFFFFF; 3164 *res = (uint32_t)maxwrite; 3165 bitmap[0] &= ~FATTR4_WORD0_MAXWRITE; 3166 } 3167 dprintk("%s: maxwrite=%lu\n", __func__, (unsigned long)*res); 3168 return status; 3169 out_overflow: 3170 print_overflow_msg(__func__, xdr); 3171 return -EIO; 3172 } 3173 3174 static int decode_attr_mode(struct xdr_stream *xdr, uint32_t *bitmap, umode_t *mode) 3175 { 3176 uint32_t tmp; 3177 __be32 *p; 3178 int ret = 0; 3179 3180 *mode = 0; 3181 if (unlikely(bitmap[1] & (FATTR4_WORD1_MODE - 1U))) 3182 return -EIO; 3183 if (likely(bitmap[1] & FATTR4_WORD1_MODE)) { 3184 p = xdr_inline_decode(xdr, 4); 3185 if (unlikely(!p)) 3186 goto out_overflow; 3187 tmp = be32_to_cpup(p); 3188 *mode = tmp & ~S_IFMT; 3189 bitmap[1] &= ~FATTR4_WORD1_MODE; 3190 ret = NFS_ATTR_FATTR_MODE; 3191 } 3192 dprintk("%s: file mode=0%o\n", __func__, (unsigned int)*mode); 3193 return ret; 3194 out_overflow: 3195 print_overflow_msg(__func__, xdr); 3196 return -EIO; 3197 } 3198 3199 static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *nlink) 3200 { 3201 __be32 *p; 3202 int ret = 0; 3203 3204 *nlink = 1; 3205 if (unlikely(bitmap[1] & (FATTR4_WORD1_NUMLINKS - 1U))) 3206 return -EIO; 3207 if (likely(bitmap[1] & FATTR4_WORD1_NUMLINKS)) { 3208 p = xdr_inline_decode(xdr, 4); 3209 if (unlikely(!p)) 3210 goto out_overflow; 3211 *nlink = be32_to_cpup(p); 3212 bitmap[1] &= ~FATTR4_WORD1_NUMLINKS; 3213 ret = NFS_ATTR_FATTR_NLINK; 3214 } 3215 dprintk("%s: nlink=%u\n", __func__, (unsigned int)*nlink); 3216 return ret; 3217 out_overflow: 3218 print_overflow_msg(__func__, xdr); 3219 return -EIO; 3220 } 3221 3222 static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap, 3223 struct nfs_client *clp, uint32_t *uid, int may_sleep) 3224 { 3225 uint32_t len; 3226 __be32 *p; 3227 int ret = 0; 3228 3229 *uid = -2; 3230 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER - 1U))) 3231 return -EIO; 3232 if (likely(bitmap[1] & FATTR4_WORD1_OWNER)) { 3233 p = xdr_inline_decode(xdr, 4); 3234 if (unlikely(!p)) 3235 goto out_overflow; 3236 len = be32_to_cpup(p); 3237 p = xdr_inline_decode(xdr, len); 3238 if (unlikely(!p)) 3239 goto out_overflow; 3240 if (!may_sleep) { 3241 /* do nothing */ 3242 } else if (len < XDR_MAX_NETOBJ) { 3243 if (nfs_map_name_to_uid(clp, (char *)p, len, uid) == 0) 3244 ret = NFS_ATTR_FATTR_OWNER; 3245 else 3246 dprintk("%s: nfs_map_name_to_uid failed!\n", 3247 __func__); 3248 } else 3249 dprintk("%s: name too long (%u)!\n", 3250 __func__, len); 3251 bitmap[1] &= ~FATTR4_WORD1_OWNER; 3252 } 3253 dprintk("%s: uid=%d\n", __func__, (int)*uid); 3254 return ret; 3255 out_overflow: 3256 print_overflow_msg(__func__, xdr); 3257 return -EIO; 3258 } 3259 3260 static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap, 3261 struct nfs_client *clp, uint32_t *gid, int may_sleep) 3262 { 3263 uint32_t len; 3264 __be32 *p; 3265 int ret = 0; 3266 3267 *gid = -2; 3268 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER_GROUP - 1U))) 3269 return -EIO; 3270 if (likely(bitmap[1] & FATTR4_WORD1_OWNER_GROUP)) { 3271 p = xdr_inline_decode(xdr, 4); 3272 if (unlikely(!p)) 3273 goto out_overflow; 3274 len = be32_to_cpup(p); 3275 p = xdr_inline_decode(xdr, len); 3276 if (unlikely(!p)) 3277 goto out_overflow; 3278 if (!may_sleep) { 3279 /* do nothing */ 3280 } else if (len < XDR_MAX_NETOBJ) { 3281 if (nfs_map_group_to_gid(clp, (char *)p, len, gid) == 0) 3282 ret = NFS_ATTR_FATTR_GROUP; 3283 else 3284 dprintk("%s: nfs_map_group_to_gid failed!\n", 3285 __func__); 3286 } else 3287 dprintk("%s: name too long (%u)!\n", 3288 __func__, len); 3289 bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP; 3290 } 3291 dprintk("%s: gid=%d\n", __func__, (int)*gid); 3292 return ret; 3293 out_overflow: 3294 print_overflow_msg(__func__, xdr); 3295 return -EIO; 3296 } 3297 3298 static int decode_attr_rdev(struct xdr_stream *xdr, uint32_t *bitmap, dev_t *rdev) 3299 { 3300 uint32_t major = 0, minor = 0; 3301 __be32 *p; 3302 int ret = 0; 3303 3304 *rdev = MKDEV(0,0); 3305 if (unlikely(bitmap[1] & (FATTR4_WORD1_RAWDEV - 1U))) 3306 return -EIO; 3307 if (likely(bitmap[1] & FATTR4_WORD1_RAWDEV)) { 3308 dev_t tmp; 3309 3310 p = xdr_inline_decode(xdr, 8); 3311 if (unlikely(!p)) 3312 goto out_overflow; 3313 major = be32_to_cpup(p++); 3314 minor = be32_to_cpup(p); 3315 tmp = MKDEV(major, minor); 3316 if (MAJOR(tmp) == major && MINOR(tmp) == minor) 3317 *rdev = tmp; 3318 bitmap[1] &= ~ FATTR4_WORD1_RAWDEV; 3319 ret = NFS_ATTR_FATTR_RDEV; 3320 } 3321 dprintk("%s: rdev=(0x%x:0x%x)\n", __func__, major, minor); 3322 return ret; 3323 out_overflow: 3324 print_overflow_msg(__func__, xdr); 3325 return -EIO; 3326 } 3327 3328 static int decode_attr_space_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 3329 { 3330 __be32 *p; 3331 int status = 0; 3332 3333 *res = 0; 3334 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_AVAIL - 1U))) 3335 return -EIO; 3336 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_AVAIL)) { 3337 p = xdr_inline_decode(xdr, 8); 3338 if (unlikely(!p)) 3339 goto out_overflow; 3340 xdr_decode_hyper(p, res); 3341 bitmap[1] &= ~FATTR4_WORD1_SPACE_AVAIL; 3342 } 3343 dprintk("%s: space avail=%Lu\n", __func__, (unsigned long long)*res); 3344 return status; 3345 out_overflow: 3346 print_overflow_msg(__func__, xdr); 3347 return -EIO; 3348 } 3349 3350 static int decode_attr_space_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 3351 { 3352 __be32 *p; 3353 int status = 0; 3354 3355 *res = 0; 3356 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_FREE - 1U))) 3357 return -EIO; 3358 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_FREE)) { 3359 p = xdr_inline_decode(xdr, 8); 3360 if (unlikely(!p)) 3361 goto out_overflow; 3362 xdr_decode_hyper(p, res); 3363 bitmap[1] &= ~FATTR4_WORD1_SPACE_FREE; 3364 } 3365 dprintk("%s: space free=%Lu\n", __func__, (unsigned long long)*res); 3366 return status; 3367 out_overflow: 3368 print_overflow_msg(__func__, xdr); 3369 return -EIO; 3370 } 3371 3372 static int decode_attr_space_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 3373 { 3374 __be32 *p; 3375 int status = 0; 3376 3377 *res = 0; 3378 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_TOTAL - 1U))) 3379 return -EIO; 3380 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_TOTAL)) { 3381 p = xdr_inline_decode(xdr, 8); 3382 if (unlikely(!p)) 3383 goto out_overflow; 3384 xdr_decode_hyper(p, res); 3385 bitmap[1] &= ~FATTR4_WORD1_SPACE_TOTAL; 3386 } 3387 dprintk("%s: space total=%Lu\n", __func__, (unsigned long long)*res); 3388 return status; 3389 out_overflow: 3390 print_overflow_msg(__func__, xdr); 3391 return -EIO; 3392 } 3393 3394 static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *used) 3395 { 3396 __be32 *p; 3397 int ret = 0; 3398 3399 *used = 0; 3400 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_USED - 1U))) 3401 return -EIO; 3402 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_USED)) { 3403 p = xdr_inline_decode(xdr, 8); 3404 if (unlikely(!p)) 3405 goto out_overflow; 3406 xdr_decode_hyper(p, used); 3407 bitmap[1] &= ~FATTR4_WORD1_SPACE_USED; 3408 ret = NFS_ATTR_FATTR_SPACE_USED; 3409 } 3410 dprintk("%s: space used=%Lu\n", __func__, 3411 (unsigned long long)*used); 3412 return ret; 3413 out_overflow: 3414 print_overflow_msg(__func__, xdr); 3415 return -EIO; 3416 } 3417 3418 static int decode_attr_time(struct xdr_stream *xdr, struct timespec *time) 3419 { 3420 __be32 *p; 3421 uint64_t sec; 3422 uint32_t nsec; 3423 3424 p = xdr_inline_decode(xdr, 12); 3425 if (unlikely(!p)) 3426 goto out_overflow; 3427 p = xdr_decode_hyper(p, &sec); 3428 nsec = be32_to_cpup(p); 3429 time->tv_sec = (time_t)sec; 3430 time->tv_nsec = (long)nsec; 3431 return 0; 3432 out_overflow: 3433 print_overflow_msg(__func__, xdr); 3434 return -EIO; 3435 } 3436 3437 static int decode_attr_time_access(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time) 3438 { 3439 int status = 0; 3440 3441 time->tv_sec = 0; 3442 time->tv_nsec = 0; 3443 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_ACCESS - 1U))) 3444 return -EIO; 3445 if (likely(bitmap[1] & FATTR4_WORD1_TIME_ACCESS)) { 3446 status = decode_attr_time(xdr, time); 3447 if (status == 0) 3448 status = NFS_ATTR_FATTR_ATIME; 3449 bitmap[1] &= ~FATTR4_WORD1_TIME_ACCESS; 3450 } 3451 dprintk("%s: atime=%ld\n", __func__, (long)time->tv_sec); 3452 return status; 3453 } 3454 3455 static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time) 3456 { 3457 int status = 0; 3458 3459 time->tv_sec = 0; 3460 time->tv_nsec = 0; 3461 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_METADATA - 1U))) 3462 return -EIO; 3463 if (likely(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) { 3464 status = decode_attr_time(xdr, time); 3465 if (status == 0) 3466 status = NFS_ATTR_FATTR_CTIME; 3467 bitmap[1] &= ~FATTR4_WORD1_TIME_METADATA; 3468 } 3469 dprintk("%s: ctime=%ld\n", __func__, (long)time->tv_sec); 3470 return status; 3471 } 3472 3473 static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time) 3474 { 3475 int status = 0; 3476 3477 time->tv_sec = 0; 3478 time->tv_nsec = 0; 3479 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_MODIFY - 1U))) 3480 return -EIO; 3481 if (likely(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) { 3482 status = decode_attr_time(xdr, time); 3483 if (status == 0) 3484 status = NFS_ATTR_FATTR_MTIME; 3485 bitmap[1] &= ~FATTR4_WORD1_TIME_MODIFY; 3486 } 3487 dprintk("%s: mtime=%ld\n", __func__, (long)time->tv_sec); 3488 return status; 3489 } 3490 3491 static int verify_attr_len(struct xdr_stream *xdr, __be32 *savep, uint32_t attrlen) 3492 { 3493 unsigned int attrwords = XDR_QUADLEN(attrlen); 3494 unsigned int nwords = xdr->p - savep; 3495 3496 if (unlikely(attrwords != nwords)) { 3497 dprintk("%s: server returned incorrect attribute length: " 3498 "%u %c %u\n", 3499 __func__, 3500 attrwords << 2, 3501 (attrwords < nwords) ? '<' : '>', 3502 nwords << 2); 3503 return -EIO; 3504 } 3505 return 0; 3506 } 3507 3508 static int decode_change_info(struct xdr_stream *xdr, struct nfs4_change_info *cinfo) 3509 { 3510 __be32 *p; 3511 3512 p = xdr_inline_decode(xdr, 20); 3513 if (unlikely(!p)) 3514 goto out_overflow; 3515 cinfo->atomic = be32_to_cpup(p++); 3516 p = xdr_decode_hyper(p, &cinfo->before); 3517 xdr_decode_hyper(p, &cinfo->after); 3518 return 0; 3519 out_overflow: 3520 print_overflow_msg(__func__, xdr); 3521 return -EIO; 3522 } 3523 3524 static int decode_access(struct xdr_stream *xdr, struct nfs4_accessres *access) 3525 { 3526 __be32 *p; 3527 uint32_t supp, acc; 3528 int status; 3529 3530 status = decode_op_hdr(xdr, OP_ACCESS); 3531 if (status) 3532 return status; 3533 p = xdr_inline_decode(xdr, 8); 3534 if (unlikely(!p)) 3535 goto out_overflow; 3536 supp = be32_to_cpup(p++); 3537 acc = be32_to_cpup(p); 3538 access->supported = supp; 3539 access->access = acc; 3540 return 0; 3541 out_overflow: 3542 print_overflow_msg(__func__, xdr); 3543 return -EIO; 3544 } 3545 3546 static int decode_opaque_fixed(struct xdr_stream *xdr, void *buf, size_t len) 3547 { 3548 __be32 *p; 3549 3550 p = xdr_inline_decode(xdr, len); 3551 if (likely(p)) { 3552 memcpy(buf, p, len); 3553 return 0; 3554 } 3555 print_overflow_msg(__func__, xdr); 3556 return -EIO; 3557 } 3558 3559 static int decode_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid) 3560 { 3561 return decode_opaque_fixed(xdr, stateid->data, NFS4_STATEID_SIZE); 3562 } 3563 3564 static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res) 3565 { 3566 int status; 3567 3568 status = decode_op_hdr(xdr, OP_CLOSE); 3569 if (status != -EIO) 3570 nfs_increment_open_seqid(status, res->seqid); 3571 if (!status) 3572 status = decode_stateid(xdr, &res->stateid); 3573 return status; 3574 } 3575 3576 static int decode_verifier(struct xdr_stream *xdr, void *verifier) 3577 { 3578 return decode_opaque_fixed(xdr, verifier, 8); 3579 } 3580 3581 static int decode_commit(struct xdr_stream *xdr, struct nfs_writeres *res) 3582 { 3583 int status; 3584 3585 status = decode_op_hdr(xdr, OP_COMMIT); 3586 if (!status) 3587 status = decode_verifier(xdr, res->verf->verifier); 3588 return status; 3589 } 3590 3591 static int decode_create(struct xdr_stream *xdr, struct nfs4_change_info *cinfo) 3592 { 3593 __be32 *p; 3594 uint32_t bmlen; 3595 int status; 3596 3597 status = decode_op_hdr(xdr, OP_CREATE); 3598 if (status) 3599 return status; 3600 if ((status = decode_change_info(xdr, cinfo))) 3601 return status; 3602 p = xdr_inline_decode(xdr, 4); 3603 if (unlikely(!p)) 3604 goto out_overflow; 3605 bmlen = be32_to_cpup(p); 3606 p = xdr_inline_decode(xdr, bmlen << 2); 3607 if (likely(p)) 3608 return 0; 3609 out_overflow: 3610 print_overflow_msg(__func__, xdr); 3611 return -EIO; 3612 } 3613 3614 static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_res *res) 3615 { 3616 __be32 *savep; 3617 uint32_t attrlen, bitmap[2] = {0}; 3618 int status; 3619 3620 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) 3621 goto xdr_error; 3622 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) 3623 goto xdr_error; 3624 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) 3625 goto xdr_error; 3626 if ((status = decode_attr_supported(xdr, bitmap, res->attr_bitmask)) != 0) 3627 goto xdr_error; 3628 if ((status = decode_attr_link_support(xdr, bitmap, &res->has_links)) != 0) 3629 goto xdr_error; 3630 if ((status = decode_attr_symlink_support(xdr, bitmap, &res->has_symlinks)) != 0) 3631 goto xdr_error; 3632 if ((status = decode_attr_aclsupport(xdr, bitmap, &res->acl_bitmask)) != 0) 3633 goto xdr_error; 3634 status = verify_attr_len(xdr, savep, attrlen); 3635 xdr_error: 3636 dprintk("%s: xdr returned %d!\n", __func__, -status); 3637 return status; 3638 } 3639 3640 static int decode_statfs(struct xdr_stream *xdr, struct nfs_fsstat *fsstat) 3641 { 3642 __be32 *savep; 3643 uint32_t attrlen, bitmap[2] = {0}; 3644 int status; 3645 3646 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) 3647 goto xdr_error; 3648 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) 3649 goto xdr_error; 3650 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) 3651 goto xdr_error; 3652 3653 if ((status = decode_attr_files_avail(xdr, bitmap, &fsstat->afiles)) != 0) 3654 goto xdr_error; 3655 if ((status = decode_attr_files_free(xdr, bitmap, &fsstat->ffiles)) != 0) 3656 goto xdr_error; 3657 if ((status = decode_attr_files_total(xdr, bitmap, &fsstat->tfiles)) != 0) 3658 goto xdr_error; 3659 if ((status = decode_attr_space_avail(xdr, bitmap, &fsstat->abytes)) != 0) 3660 goto xdr_error; 3661 if ((status = decode_attr_space_free(xdr, bitmap, &fsstat->fbytes)) != 0) 3662 goto xdr_error; 3663 if ((status = decode_attr_space_total(xdr, bitmap, &fsstat->tbytes)) != 0) 3664 goto xdr_error; 3665 3666 status = verify_attr_len(xdr, savep, attrlen); 3667 xdr_error: 3668 dprintk("%s: xdr returned %d!\n", __func__, -status); 3669 return status; 3670 } 3671 3672 static int decode_pathconf(struct xdr_stream *xdr, struct nfs_pathconf *pathconf) 3673 { 3674 __be32 *savep; 3675 uint32_t attrlen, bitmap[2] = {0}; 3676 int status; 3677 3678 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) 3679 goto xdr_error; 3680 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) 3681 goto xdr_error; 3682 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) 3683 goto xdr_error; 3684 3685 if ((status = decode_attr_maxlink(xdr, bitmap, &pathconf->max_link)) != 0) 3686 goto xdr_error; 3687 if ((status = decode_attr_maxname(xdr, bitmap, &pathconf->max_namelen)) != 0) 3688 goto xdr_error; 3689 3690 status = verify_attr_len(xdr, savep, attrlen); 3691 xdr_error: 3692 dprintk("%s: xdr returned %d!\n", __func__, -status); 3693 return status; 3694 } 3695 3696 static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr, 3697 const struct nfs_server *server, int may_sleep) 3698 { 3699 __be32 *savep; 3700 uint32_t attrlen, 3701 bitmap[2] = {0}, 3702 type; 3703 int status; 3704 umode_t fmode = 0; 3705 uint64_t fileid; 3706 3707 status = decode_op_hdr(xdr, OP_GETATTR); 3708 if (status < 0) 3709 goto xdr_error; 3710 3711 status = decode_attr_bitmap(xdr, bitmap); 3712 if (status < 0) 3713 goto xdr_error; 3714 3715 status = decode_attr_length(xdr, &attrlen, &savep); 3716 if (status < 0) 3717 goto xdr_error; 3718 3719 3720 status = decode_attr_type(xdr, bitmap, &type); 3721 if (status < 0) 3722 goto xdr_error; 3723 fattr->mode = 0; 3724 if (status != 0) { 3725 fattr->mode |= nfs_type2fmt[type]; 3726 fattr->valid |= status; 3727 } 3728 3729 status = decode_attr_change(xdr, bitmap, &fattr->change_attr); 3730 if (status < 0) 3731 goto xdr_error; 3732 fattr->valid |= status; 3733 3734 status = decode_attr_size(xdr, bitmap, &fattr->size); 3735 if (status < 0) 3736 goto xdr_error; 3737 fattr->valid |= status; 3738 3739 status = decode_attr_fsid(xdr, bitmap, &fattr->fsid); 3740 if (status < 0) 3741 goto xdr_error; 3742 fattr->valid |= status; 3743 3744 status = decode_attr_fileid(xdr, bitmap, &fattr->fileid); 3745 if (status < 0) 3746 goto xdr_error; 3747 fattr->valid |= status; 3748 3749 status = decode_attr_fs_locations(xdr, bitmap, container_of(fattr, 3750 struct nfs4_fs_locations, 3751 fattr)); 3752 if (status < 0) 3753 goto xdr_error; 3754 fattr->valid |= status; 3755 3756 status = decode_attr_mode(xdr, bitmap, &fmode); 3757 if (status < 0) 3758 goto xdr_error; 3759 if (status != 0) { 3760 fattr->mode |= fmode; 3761 fattr->valid |= status; 3762 } 3763 3764 status = decode_attr_nlink(xdr, bitmap, &fattr->nlink); 3765 if (status < 0) 3766 goto xdr_error; 3767 fattr->valid |= status; 3768 3769 status = decode_attr_owner(xdr, bitmap, server->nfs_client, 3770 &fattr->uid, may_sleep); 3771 if (status < 0) 3772 goto xdr_error; 3773 fattr->valid |= status; 3774 3775 status = decode_attr_group(xdr, bitmap, server->nfs_client, 3776 &fattr->gid, may_sleep); 3777 if (status < 0) 3778 goto xdr_error; 3779 fattr->valid |= status; 3780 3781 status = decode_attr_rdev(xdr, bitmap, &fattr->rdev); 3782 if (status < 0) 3783 goto xdr_error; 3784 fattr->valid |= status; 3785 3786 status = decode_attr_space_used(xdr, bitmap, &fattr->du.nfs3.used); 3787 if (status < 0) 3788 goto xdr_error; 3789 fattr->valid |= status; 3790 3791 status = decode_attr_time_access(xdr, bitmap, &fattr->atime); 3792 if (status < 0) 3793 goto xdr_error; 3794 fattr->valid |= status; 3795 3796 status = decode_attr_time_metadata(xdr, bitmap, &fattr->ctime); 3797 if (status < 0) 3798 goto xdr_error; 3799 fattr->valid |= status; 3800 3801 status = decode_attr_time_modify(xdr, bitmap, &fattr->mtime); 3802 if (status < 0) 3803 goto xdr_error; 3804 fattr->valid |= status; 3805 3806 status = decode_attr_mounted_on_fileid(xdr, bitmap, &fileid); 3807 if (status < 0) 3808 goto xdr_error; 3809 if (status != 0 && !(fattr->valid & status)) { 3810 fattr->fileid = fileid; 3811 fattr->valid |= status; 3812 } 3813 3814 status = verify_attr_len(xdr, savep, attrlen); 3815 xdr_error: 3816 dprintk("%s: xdr returned %d\n", __func__, -status); 3817 return status; 3818 } 3819 3820 3821 static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo) 3822 { 3823 __be32 *savep; 3824 uint32_t attrlen, bitmap[2]; 3825 int status; 3826 3827 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) 3828 goto xdr_error; 3829 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) 3830 goto xdr_error; 3831 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) 3832 goto xdr_error; 3833 3834 fsinfo->rtmult = fsinfo->wtmult = 512; /* ??? */ 3835 3836 if ((status = decode_attr_lease_time(xdr, bitmap, &fsinfo->lease_time)) != 0) 3837 goto xdr_error; 3838 if ((status = decode_attr_maxfilesize(xdr, bitmap, &fsinfo->maxfilesize)) != 0) 3839 goto xdr_error; 3840 if ((status = decode_attr_maxread(xdr, bitmap, &fsinfo->rtmax)) != 0) 3841 goto xdr_error; 3842 fsinfo->rtpref = fsinfo->dtpref = fsinfo->rtmax; 3843 if ((status = decode_attr_maxwrite(xdr, bitmap, &fsinfo->wtmax)) != 0) 3844 goto xdr_error; 3845 fsinfo->wtpref = fsinfo->wtmax; 3846 3847 status = verify_attr_len(xdr, savep, attrlen); 3848 xdr_error: 3849 dprintk("%s: xdr returned %d!\n", __func__, -status); 3850 return status; 3851 } 3852 3853 static int decode_getfh(struct xdr_stream *xdr, struct nfs_fh *fh) 3854 { 3855 __be32 *p; 3856 uint32_t len; 3857 int status; 3858 3859 /* Zero handle first to allow comparisons */ 3860 memset(fh, 0, sizeof(*fh)); 3861 3862 status = decode_op_hdr(xdr, OP_GETFH); 3863 if (status) 3864 return status; 3865 3866 p = xdr_inline_decode(xdr, 4); 3867 if (unlikely(!p)) 3868 goto out_overflow; 3869 len = be32_to_cpup(p); 3870 if (len > NFS4_FHSIZE) 3871 return -EIO; 3872 fh->size = len; 3873 p = xdr_inline_decode(xdr, len); 3874 if (unlikely(!p)) 3875 goto out_overflow; 3876 memcpy(fh->data, p, len); 3877 return 0; 3878 out_overflow: 3879 print_overflow_msg(__func__, xdr); 3880 return -EIO; 3881 } 3882 3883 static int decode_link(struct xdr_stream *xdr, struct nfs4_change_info *cinfo) 3884 { 3885 int status; 3886 3887 status = decode_op_hdr(xdr, OP_LINK); 3888 if (status) 3889 return status; 3890 return decode_change_info(xdr, cinfo); 3891 } 3892 3893 /* 3894 * We create the owner, so we know a proper owner.id length is 4. 3895 */ 3896 static int decode_lock_denied (struct xdr_stream *xdr, struct file_lock *fl) 3897 { 3898 uint64_t offset, length, clientid; 3899 __be32 *p; 3900 uint32_t namelen, type; 3901 3902 p = xdr_inline_decode(xdr, 32); 3903 if (unlikely(!p)) 3904 goto out_overflow; 3905 p = xdr_decode_hyper(p, &offset); 3906 p = xdr_decode_hyper(p, &length); 3907 type = be32_to_cpup(p++); 3908 if (fl != NULL) { 3909 fl->fl_start = (loff_t)offset; 3910 fl->fl_end = fl->fl_start + (loff_t)length - 1; 3911 if (length == ~(uint64_t)0) 3912 fl->fl_end = OFFSET_MAX; 3913 fl->fl_type = F_WRLCK; 3914 if (type & 1) 3915 fl->fl_type = F_RDLCK; 3916 fl->fl_pid = 0; 3917 } 3918 p = xdr_decode_hyper(p, &clientid); 3919 namelen = be32_to_cpup(p); 3920 p = xdr_inline_decode(xdr, namelen); 3921 if (likely(p)) 3922 return -NFS4ERR_DENIED; 3923 out_overflow: 3924 print_overflow_msg(__func__, xdr); 3925 return -EIO; 3926 } 3927 3928 static int decode_lock(struct xdr_stream *xdr, struct nfs_lock_res *res) 3929 { 3930 int status; 3931 3932 status = decode_op_hdr(xdr, OP_LOCK); 3933 if (status == -EIO) 3934 goto out; 3935 if (status == 0) { 3936 status = decode_stateid(xdr, &res->stateid); 3937 if (unlikely(status)) 3938 goto out; 3939 } else if (status == -NFS4ERR_DENIED) 3940 status = decode_lock_denied(xdr, NULL); 3941 if (res->open_seqid != NULL) 3942 nfs_increment_open_seqid(status, res->open_seqid); 3943 nfs_increment_lock_seqid(status, res->lock_seqid); 3944 out: 3945 return status; 3946 } 3947 3948 static int decode_lockt(struct xdr_stream *xdr, struct nfs_lockt_res *res) 3949 { 3950 int status; 3951 status = decode_op_hdr(xdr, OP_LOCKT); 3952 if (status == -NFS4ERR_DENIED) 3953 return decode_lock_denied(xdr, res->denied); 3954 return status; 3955 } 3956 3957 static int decode_locku(struct xdr_stream *xdr, struct nfs_locku_res *res) 3958 { 3959 int status; 3960 3961 status = decode_op_hdr(xdr, OP_LOCKU); 3962 if (status != -EIO) 3963 nfs_increment_lock_seqid(status, res->seqid); 3964 if (status == 0) 3965 status = decode_stateid(xdr, &res->stateid); 3966 return status; 3967 } 3968 3969 static int decode_lookup(struct xdr_stream *xdr) 3970 { 3971 return decode_op_hdr(xdr, OP_LOOKUP); 3972 } 3973 3974 /* This is too sick! */ 3975 static int decode_space_limit(struct xdr_stream *xdr, u64 *maxsize) 3976 { 3977 __be32 *p; 3978 uint32_t limit_type, nblocks, blocksize; 3979 3980 p = xdr_inline_decode(xdr, 12); 3981 if (unlikely(!p)) 3982 goto out_overflow; 3983 limit_type = be32_to_cpup(p++); 3984 switch (limit_type) { 3985 case 1: 3986 xdr_decode_hyper(p, maxsize); 3987 break; 3988 case 2: 3989 nblocks = be32_to_cpup(p++); 3990 blocksize = be32_to_cpup(p); 3991 *maxsize = (uint64_t)nblocks * (uint64_t)blocksize; 3992 } 3993 return 0; 3994 out_overflow: 3995 print_overflow_msg(__func__, xdr); 3996 return -EIO; 3997 } 3998 3999 static int decode_delegation(struct xdr_stream *xdr, struct nfs_openres *res) 4000 { 4001 __be32 *p; 4002 uint32_t delegation_type; 4003 int status; 4004 4005 p = xdr_inline_decode(xdr, 4); 4006 if (unlikely(!p)) 4007 goto out_overflow; 4008 delegation_type = be32_to_cpup(p); 4009 if (delegation_type == NFS4_OPEN_DELEGATE_NONE) { 4010 res->delegation_type = 0; 4011 return 0; 4012 } 4013 status = decode_stateid(xdr, &res->delegation); 4014 if (unlikely(status)) 4015 return status; 4016 p = xdr_inline_decode(xdr, 4); 4017 if (unlikely(!p)) 4018 goto out_overflow; 4019 res->do_recall = be32_to_cpup(p); 4020 4021 switch (delegation_type) { 4022 case NFS4_OPEN_DELEGATE_READ: 4023 res->delegation_type = FMODE_READ; 4024 break; 4025 case NFS4_OPEN_DELEGATE_WRITE: 4026 res->delegation_type = FMODE_WRITE|FMODE_READ; 4027 if (decode_space_limit(xdr, &res->maxsize) < 0) 4028 return -EIO; 4029 } 4030 return decode_ace(xdr, NULL, res->server->nfs_client); 4031 out_overflow: 4032 print_overflow_msg(__func__, xdr); 4033 return -EIO; 4034 } 4035 4036 static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res) 4037 { 4038 __be32 *p; 4039 uint32_t savewords, bmlen, i; 4040 int status; 4041 4042 status = decode_op_hdr(xdr, OP_OPEN); 4043 if (status != -EIO) 4044 nfs_increment_open_seqid(status, res->seqid); 4045 if (!status) 4046 status = decode_stateid(xdr, &res->stateid); 4047 if (unlikely(status)) 4048 return status; 4049 4050 decode_change_info(xdr, &res->cinfo); 4051 4052 p = xdr_inline_decode(xdr, 8); 4053 if (unlikely(!p)) 4054 goto out_overflow; 4055 res->rflags = be32_to_cpup(p++); 4056 bmlen = be32_to_cpup(p); 4057 if (bmlen > 10) 4058 goto xdr_error; 4059 4060 p = xdr_inline_decode(xdr, bmlen << 2); 4061 if (unlikely(!p)) 4062 goto out_overflow; 4063 savewords = min_t(uint32_t, bmlen, NFS4_BITMAP_SIZE); 4064 for (i = 0; i < savewords; ++i) 4065 res->attrset[i] = be32_to_cpup(p++); 4066 for (; i < NFS4_BITMAP_SIZE; i++) 4067 res->attrset[i] = 0; 4068 4069 return decode_delegation(xdr, res); 4070 xdr_error: 4071 dprintk("%s: Bitmap too large! Length = %u\n", __func__, bmlen); 4072 return -EIO; 4073 out_overflow: 4074 print_overflow_msg(__func__, xdr); 4075 return -EIO; 4076 } 4077 4078 static int decode_open_confirm(struct xdr_stream *xdr, struct nfs_open_confirmres *res) 4079 { 4080 int status; 4081 4082 status = decode_op_hdr(xdr, OP_OPEN_CONFIRM); 4083 if (status != -EIO) 4084 nfs_increment_open_seqid(status, res->seqid); 4085 if (!status) 4086 status = decode_stateid(xdr, &res->stateid); 4087 return status; 4088 } 4089 4090 static int decode_open_downgrade(struct xdr_stream *xdr, struct nfs_closeres *res) 4091 { 4092 int status; 4093 4094 status = decode_op_hdr(xdr, OP_OPEN_DOWNGRADE); 4095 if (status != -EIO) 4096 nfs_increment_open_seqid(status, res->seqid); 4097 if (!status) 4098 status = decode_stateid(xdr, &res->stateid); 4099 return status; 4100 } 4101 4102 static int decode_putfh(struct xdr_stream *xdr) 4103 { 4104 return decode_op_hdr(xdr, OP_PUTFH); 4105 } 4106 4107 static int decode_putrootfh(struct xdr_stream *xdr) 4108 { 4109 return decode_op_hdr(xdr, OP_PUTROOTFH); 4110 } 4111 4112 static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs_readres *res) 4113 { 4114 struct kvec *iov = req->rq_rcv_buf.head; 4115 __be32 *p; 4116 uint32_t count, eof, recvd, hdrlen; 4117 int status; 4118 4119 status = decode_op_hdr(xdr, OP_READ); 4120 if (status) 4121 return status; 4122 p = xdr_inline_decode(xdr, 8); 4123 if (unlikely(!p)) 4124 goto out_overflow; 4125 eof = be32_to_cpup(p++); 4126 count = be32_to_cpup(p); 4127 hdrlen = (u8 *) p - (u8 *) iov->iov_base; 4128 recvd = req->rq_rcv_buf.len - hdrlen; 4129 if (count > recvd) { 4130 dprintk("NFS: server cheating in read reply: " 4131 "count %u > recvd %u\n", count, recvd); 4132 count = recvd; 4133 eof = 0; 4134 } 4135 xdr_read_pages(xdr, count); 4136 res->eof = eof; 4137 res->count = count; 4138 return 0; 4139 out_overflow: 4140 print_overflow_msg(__func__, xdr); 4141 return -EIO; 4142 } 4143 4144 static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs4_readdir_res *readdir) 4145 { 4146 struct xdr_buf *rcvbuf = &req->rq_rcv_buf; 4147 struct page *page = *rcvbuf->pages; 4148 struct kvec *iov = rcvbuf->head; 4149 size_t hdrlen; 4150 u32 recvd, pglen = rcvbuf->page_len; 4151 __be32 *end, *entry, *p, *kaddr; 4152 unsigned int nr = 0; 4153 int status; 4154 4155 status = decode_op_hdr(xdr, OP_READDIR); 4156 if (!status) 4157 status = decode_verifier(xdr, readdir->verifier.data); 4158 if (unlikely(status)) 4159 return status; 4160 dprintk("%s: verifier = %08x:%08x\n", 4161 __func__, 4162 ((u32 *)readdir->verifier.data)[0], 4163 ((u32 *)readdir->verifier.data)[1]); 4164 4165 4166 hdrlen = (char *) xdr->p - (char *) iov->iov_base; 4167 recvd = rcvbuf->len - hdrlen; 4168 if (pglen > recvd) 4169 pglen = recvd; 4170 xdr_read_pages(xdr, pglen); 4171 4172 BUG_ON(pglen + readdir->pgbase > PAGE_CACHE_SIZE); 4173 kaddr = p = kmap_atomic(page, KM_USER0); 4174 end = p + ((pglen + readdir->pgbase) >> 2); 4175 entry = p; 4176 4177 /* Make sure the packet actually has a value_follows and EOF entry */ 4178 if ((entry + 1) > end) 4179 goto short_pkt; 4180 4181 for (; *p++; nr++) { 4182 u32 len, attrlen, xlen; 4183 if (end - p < 3) 4184 goto short_pkt; 4185 dprintk("cookie = %Lu, ", *((unsigned long long *)p)); 4186 p += 2; /* cookie */ 4187 len = ntohl(*p++); /* filename length */ 4188 if (len > NFS4_MAXNAMLEN) { 4189 dprintk("NFS: giant filename in readdir (len 0x%x)\n", 4190 len); 4191 goto err_unmap; 4192 } 4193 xlen = XDR_QUADLEN(len); 4194 if (end - p < xlen + 1) 4195 goto short_pkt; 4196 dprintk("filename = %*s\n", len, (char *)p); 4197 p += xlen; 4198 len = ntohl(*p++); /* bitmap length */ 4199 if (end - p < len + 1) 4200 goto short_pkt; 4201 p += len; 4202 attrlen = XDR_QUADLEN(ntohl(*p++)); 4203 if (end - p < attrlen + 2) 4204 goto short_pkt; 4205 p += attrlen; /* attributes */ 4206 entry = p; 4207 } 4208 /* 4209 * Apparently some server sends responses that are a valid size, but 4210 * contain no entries, and have value_follows==0 and EOF==0. For 4211 * those, just set the EOF marker. 4212 */ 4213 if (!nr && entry[1] == 0) { 4214 dprintk("NFS: readdir reply truncated!\n"); 4215 entry[1] = 1; 4216 } 4217 out: 4218 kunmap_atomic(kaddr, KM_USER0); 4219 return 0; 4220 short_pkt: 4221 /* 4222 * When we get a short packet there are 2 possibilities. We can 4223 * return an error, or fix up the response to look like a valid 4224 * response and return what we have so far. If there are no 4225 * entries and the packet was short, then return -EIO. If there 4226 * are valid entries in the response, return them and pretend that 4227 * the call was successful, but incomplete. The caller can retry the 4228 * readdir starting at the last cookie. 4229 */ 4230 dprintk("%s: short packet at entry %d\n", __func__, nr); 4231 entry[0] = entry[1] = 0; 4232 if (nr) 4233 goto out; 4234 err_unmap: 4235 kunmap_atomic(kaddr, KM_USER0); 4236 return -errno_NFSERR_IO; 4237 } 4238 4239 static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req) 4240 { 4241 struct xdr_buf *rcvbuf = &req->rq_rcv_buf; 4242 struct kvec *iov = rcvbuf->head; 4243 size_t hdrlen; 4244 u32 len, recvd; 4245 __be32 *p; 4246 char *kaddr; 4247 int status; 4248 4249 status = decode_op_hdr(xdr, OP_READLINK); 4250 if (status) 4251 return status; 4252 4253 /* Convert length of symlink */ 4254 p = xdr_inline_decode(xdr, 4); 4255 if (unlikely(!p)) 4256 goto out_overflow; 4257 len = be32_to_cpup(p); 4258 if (len >= rcvbuf->page_len || len <= 0) { 4259 dprintk("nfs: server returned giant symlink!\n"); 4260 return -ENAMETOOLONG; 4261 } 4262 hdrlen = (char *) xdr->p - (char *) iov->iov_base; 4263 recvd = req->rq_rcv_buf.len - hdrlen; 4264 if (recvd < len) { 4265 dprintk("NFS: server cheating in readlink reply: " 4266 "count %u > recvd %u\n", len, recvd); 4267 return -EIO; 4268 } 4269 xdr_read_pages(xdr, len); 4270 /* 4271 * The XDR encode routine has set things up so that 4272 * the link text will be copied directly into the 4273 * buffer. We just have to do overflow-checking, 4274 * and and null-terminate the text (the VFS expects 4275 * null-termination). 4276 */ 4277 kaddr = (char *)kmap_atomic(rcvbuf->pages[0], KM_USER0); 4278 kaddr[len+rcvbuf->page_base] = '\0'; 4279 kunmap_atomic(kaddr, KM_USER0); 4280 return 0; 4281 out_overflow: 4282 print_overflow_msg(__func__, xdr); 4283 return -EIO; 4284 } 4285 4286 static int decode_remove(struct xdr_stream *xdr, struct nfs4_change_info *cinfo) 4287 { 4288 int status; 4289 4290 status = decode_op_hdr(xdr, OP_REMOVE); 4291 if (status) 4292 goto out; 4293 status = decode_change_info(xdr, cinfo); 4294 out: 4295 return status; 4296 } 4297 4298 static int decode_rename(struct xdr_stream *xdr, struct nfs4_change_info *old_cinfo, 4299 struct nfs4_change_info *new_cinfo) 4300 { 4301 int status; 4302 4303 status = decode_op_hdr(xdr, OP_RENAME); 4304 if (status) 4305 goto out; 4306 if ((status = decode_change_info(xdr, old_cinfo))) 4307 goto out; 4308 status = decode_change_info(xdr, new_cinfo); 4309 out: 4310 return status; 4311 } 4312 4313 static int decode_renew(struct xdr_stream *xdr) 4314 { 4315 return decode_op_hdr(xdr, OP_RENEW); 4316 } 4317 4318 static int 4319 decode_restorefh(struct xdr_stream *xdr) 4320 { 4321 return decode_op_hdr(xdr, OP_RESTOREFH); 4322 } 4323 4324 static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req, 4325 size_t *acl_len) 4326 { 4327 __be32 *savep; 4328 uint32_t attrlen, 4329 bitmap[2] = {0}; 4330 struct kvec *iov = req->rq_rcv_buf.head; 4331 int status; 4332 4333 *acl_len = 0; 4334 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) 4335 goto out; 4336 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) 4337 goto out; 4338 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) 4339 goto out; 4340 4341 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACL - 1U))) 4342 return -EIO; 4343 if (likely(bitmap[0] & FATTR4_WORD0_ACL)) { 4344 size_t hdrlen; 4345 u32 recvd; 4346 4347 /* We ignore &savep and don't do consistency checks on 4348 * the attr length. Let userspace figure it out.... */ 4349 hdrlen = (u8 *)xdr->p - (u8 *)iov->iov_base; 4350 recvd = req->rq_rcv_buf.len - hdrlen; 4351 if (attrlen > recvd) { 4352 dprintk("NFS: server cheating in getattr" 4353 " acl reply: attrlen %u > recvd %u\n", 4354 attrlen, recvd); 4355 return -EINVAL; 4356 } 4357 xdr_read_pages(xdr, attrlen); 4358 *acl_len = attrlen; 4359 } else 4360 status = -EOPNOTSUPP; 4361 4362 out: 4363 return status; 4364 } 4365 4366 static int 4367 decode_savefh(struct xdr_stream *xdr) 4368 { 4369 return decode_op_hdr(xdr, OP_SAVEFH); 4370 } 4371 4372 static int decode_setattr(struct xdr_stream *xdr) 4373 { 4374 __be32 *p; 4375 uint32_t bmlen; 4376 int status; 4377 4378 status = decode_op_hdr(xdr, OP_SETATTR); 4379 if (status) 4380 return status; 4381 p = xdr_inline_decode(xdr, 4); 4382 if (unlikely(!p)) 4383 goto out_overflow; 4384 bmlen = be32_to_cpup(p); 4385 p = xdr_inline_decode(xdr, bmlen << 2); 4386 if (likely(p)) 4387 return 0; 4388 out_overflow: 4389 print_overflow_msg(__func__, xdr); 4390 return -EIO; 4391 } 4392 4393 static int decode_setclientid(struct xdr_stream *xdr, struct nfs_client *clp) 4394 { 4395 __be32 *p; 4396 uint32_t opnum; 4397 int32_t nfserr; 4398 4399 p = xdr_inline_decode(xdr, 8); 4400 if (unlikely(!p)) 4401 goto out_overflow; 4402 opnum = be32_to_cpup(p++); 4403 if (opnum != OP_SETCLIENTID) { 4404 dprintk("nfs: decode_setclientid: Server returned operation" 4405 " %d\n", opnum); 4406 return -EIO; 4407 } 4408 nfserr = be32_to_cpup(p); 4409 if (nfserr == NFS_OK) { 4410 p = xdr_inline_decode(xdr, 8 + NFS4_VERIFIER_SIZE); 4411 if (unlikely(!p)) 4412 goto out_overflow; 4413 p = xdr_decode_hyper(p, &clp->cl_clientid); 4414 memcpy(clp->cl_confirm.data, p, NFS4_VERIFIER_SIZE); 4415 } else if (nfserr == NFSERR_CLID_INUSE) { 4416 uint32_t len; 4417 4418 /* skip netid string */ 4419 p = xdr_inline_decode(xdr, 4); 4420 if (unlikely(!p)) 4421 goto out_overflow; 4422 len = be32_to_cpup(p); 4423 p = xdr_inline_decode(xdr, len); 4424 if (unlikely(!p)) 4425 goto out_overflow; 4426 4427 /* skip uaddr string */ 4428 p = xdr_inline_decode(xdr, 4); 4429 if (unlikely(!p)) 4430 goto out_overflow; 4431 len = be32_to_cpup(p); 4432 p = xdr_inline_decode(xdr, len); 4433 if (unlikely(!p)) 4434 goto out_overflow; 4435 return -NFSERR_CLID_INUSE; 4436 } else 4437 return nfs4_stat_to_errno(nfserr); 4438 4439 return 0; 4440 out_overflow: 4441 print_overflow_msg(__func__, xdr); 4442 return -EIO; 4443 } 4444 4445 static int decode_setclientid_confirm(struct xdr_stream *xdr) 4446 { 4447 return decode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM); 4448 } 4449 4450 static int decode_write(struct xdr_stream *xdr, struct nfs_writeres *res) 4451 { 4452 __be32 *p; 4453 int status; 4454 4455 status = decode_op_hdr(xdr, OP_WRITE); 4456 if (status) 4457 return status; 4458 4459 p = xdr_inline_decode(xdr, 16); 4460 if (unlikely(!p)) 4461 goto out_overflow; 4462 res->count = be32_to_cpup(p++); 4463 res->verf->committed = be32_to_cpup(p++); 4464 memcpy(res->verf->verifier, p, 8); 4465 return 0; 4466 out_overflow: 4467 print_overflow_msg(__func__, xdr); 4468 return -EIO; 4469 } 4470 4471 static int decode_delegreturn(struct xdr_stream *xdr) 4472 { 4473 return decode_op_hdr(xdr, OP_DELEGRETURN); 4474 } 4475 4476 #if defined(CONFIG_NFS_V4_1) 4477 static int decode_exchange_id(struct xdr_stream *xdr, 4478 struct nfs41_exchange_id_res *res) 4479 { 4480 __be32 *p; 4481 uint32_t dummy; 4482 char *dummy_str; 4483 int status; 4484 struct nfs_client *clp = res->client; 4485 4486 status = decode_op_hdr(xdr, OP_EXCHANGE_ID); 4487 if (status) 4488 return status; 4489 4490 p = xdr_inline_decode(xdr, 8); 4491 if (unlikely(!p)) 4492 goto out_overflow; 4493 xdr_decode_hyper(p, &clp->cl_ex_clid); 4494 p = xdr_inline_decode(xdr, 12); 4495 if (unlikely(!p)) 4496 goto out_overflow; 4497 clp->cl_seqid = be32_to_cpup(p++); 4498 clp->cl_exchange_flags = be32_to_cpup(p++); 4499 4500 /* We ask for SP4_NONE */ 4501 dummy = be32_to_cpup(p); 4502 if (dummy != SP4_NONE) 4503 return -EIO; 4504 4505 /* Throw away minor_id */ 4506 p = xdr_inline_decode(xdr, 8); 4507 if (unlikely(!p)) 4508 goto out_overflow; 4509 4510 /* Throw away Major id */ 4511 status = decode_opaque_inline(xdr, &dummy, &dummy_str); 4512 if (unlikely(status)) 4513 return status; 4514 4515 /* Throw away server_scope */ 4516 status = decode_opaque_inline(xdr, &dummy, &dummy_str); 4517 if (unlikely(status)) 4518 return status; 4519 4520 /* Throw away Implementation id array */ 4521 status = decode_opaque_inline(xdr, &dummy, &dummy_str); 4522 if (unlikely(status)) 4523 return status; 4524 4525 return 0; 4526 out_overflow: 4527 print_overflow_msg(__func__, xdr); 4528 return -EIO; 4529 } 4530 4531 static int decode_chan_attrs(struct xdr_stream *xdr, 4532 struct nfs4_channel_attrs *attrs) 4533 { 4534 __be32 *p; 4535 u32 nr_attrs; 4536 4537 p = xdr_inline_decode(xdr, 28); 4538 if (unlikely(!p)) 4539 goto out_overflow; 4540 attrs->headerpadsz = be32_to_cpup(p++); 4541 attrs->max_rqst_sz = be32_to_cpup(p++); 4542 attrs->max_resp_sz = be32_to_cpup(p++); 4543 attrs->max_resp_sz_cached = be32_to_cpup(p++); 4544 attrs->max_ops = be32_to_cpup(p++); 4545 attrs->max_reqs = be32_to_cpup(p++); 4546 nr_attrs = be32_to_cpup(p); 4547 if (unlikely(nr_attrs > 1)) { 4548 printk(KERN_WARNING "%s: Invalid rdma channel attrs count %u\n", 4549 __func__, nr_attrs); 4550 return -EINVAL; 4551 } 4552 if (nr_attrs == 1) { 4553 p = xdr_inline_decode(xdr, 4); /* skip rdma_attrs */ 4554 if (unlikely(!p)) 4555 goto out_overflow; 4556 } 4557 return 0; 4558 out_overflow: 4559 print_overflow_msg(__func__, xdr); 4560 return -EIO; 4561 } 4562 4563 static int decode_sessionid(struct xdr_stream *xdr, struct nfs4_sessionid *sid) 4564 { 4565 return decode_opaque_fixed(xdr, sid->data, NFS4_MAX_SESSIONID_LEN); 4566 } 4567 4568 static int decode_create_session(struct xdr_stream *xdr, 4569 struct nfs41_create_session_res *res) 4570 { 4571 __be32 *p; 4572 int status; 4573 struct nfs_client *clp = res->client; 4574 struct nfs4_session *session = clp->cl_session; 4575 4576 status = decode_op_hdr(xdr, OP_CREATE_SESSION); 4577 if (!status) 4578 status = decode_sessionid(xdr, &session->sess_id); 4579 if (unlikely(status)) 4580 return status; 4581 4582 /* seqid, flags */ 4583 p = xdr_inline_decode(xdr, 8); 4584 if (unlikely(!p)) 4585 goto out_overflow; 4586 clp->cl_seqid = be32_to_cpup(p++); 4587 session->flags = be32_to_cpup(p); 4588 4589 /* Channel attributes */ 4590 status = decode_chan_attrs(xdr, &session->fc_attrs); 4591 if (!status) 4592 status = decode_chan_attrs(xdr, &session->bc_attrs); 4593 return status; 4594 out_overflow: 4595 print_overflow_msg(__func__, xdr); 4596 return -EIO; 4597 } 4598 4599 static int decode_destroy_session(struct xdr_stream *xdr, void *dummy) 4600 { 4601 return decode_op_hdr(xdr, OP_DESTROY_SESSION); 4602 } 4603 4604 static int decode_reclaim_complete(struct xdr_stream *xdr, void *dummy) 4605 { 4606 return decode_op_hdr(xdr, OP_RECLAIM_COMPLETE); 4607 } 4608 #endif /* CONFIG_NFS_V4_1 */ 4609 4610 static int decode_sequence(struct xdr_stream *xdr, 4611 struct nfs4_sequence_res *res, 4612 struct rpc_rqst *rqstp) 4613 { 4614 #if defined(CONFIG_NFS_V4_1) 4615 struct nfs4_slot *slot; 4616 struct nfs4_sessionid id; 4617 u32 dummy; 4618 int status; 4619 __be32 *p; 4620 4621 if (!res->sr_session) 4622 return 0; 4623 4624 status = decode_op_hdr(xdr, OP_SEQUENCE); 4625 if (!status) 4626 status = decode_sessionid(xdr, &id); 4627 if (unlikely(status)) 4628 goto out_err; 4629 4630 /* 4631 * If the server returns different values for sessionID, slotID or 4632 * sequence number, the server is looney tunes. 4633 */ 4634 status = -ESERVERFAULT; 4635 4636 if (memcmp(id.data, res->sr_session->sess_id.data, 4637 NFS4_MAX_SESSIONID_LEN)) { 4638 dprintk("%s Invalid session id\n", __func__); 4639 goto out_err; 4640 } 4641 4642 p = xdr_inline_decode(xdr, 20); 4643 if (unlikely(!p)) 4644 goto out_overflow; 4645 4646 /* seqid */ 4647 slot = &res->sr_session->fc_slot_table.slots[res->sr_slotid]; 4648 dummy = be32_to_cpup(p++); 4649 if (dummy != slot->seq_nr) { 4650 dprintk("%s Invalid sequence number\n", __func__); 4651 goto out_err; 4652 } 4653 /* slot id */ 4654 dummy = be32_to_cpup(p++); 4655 if (dummy != res->sr_slotid) { 4656 dprintk("%s Invalid slot id\n", __func__); 4657 goto out_err; 4658 } 4659 /* highest slot id - currently not processed */ 4660 dummy = be32_to_cpup(p++); 4661 /* target highest slot id - currently not processed */ 4662 dummy = be32_to_cpup(p++); 4663 /* result flags */ 4664 res->sr_status_flags = be32_to_cpup(p); 4665 status = 0; 4666 out_err: 4667 res->sr_status = status; 4668 return status; 4669 out_overflow: 4670 print_overflow_msg(__func__, xdr); 4671 status = -EIO; 4672 goto out_err; 4673 #else /* CONFIG_NFS_V4_1 */ 4674 return 0; 4675 #endif /* CONFIG_NFS_V4_1 */ 4676 } 4677 4678 /* 4679 * END OF "GENERIC" DECODE ROUTINES. 4680 */ 4681 4682 /* 4683 * Decode OPEN_DOWNGRADE response 4684 */ 4685 static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp, __be32 *p, struct nfs_closeres *res) 4686 { 4687 struct xdr_stream xdr; 4688 struct compound_hdr hdr; 4689 int status; 4690 4691 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); 4692 status = decode_compound_hdr(&xdr, &hdr); 4693 if (status) 4694 goto out; 4695 status = decode_sequence(&xdr, &res->seq_res, rqstp); 4696 if (status) 4697 goto out; 4698 status = decode_putfh(&xdr); 4699 if (status) 4700 goto out; 4701 status = decode_open_downgrade(&xdr, res); 4702 if (status != 0) 4703 goto out; 4704 decode_getfattr(&xdr, res->fattr, res->server, 4705 !RPC_IS_ASYNC(rqstp->rq_task)); 4706 out: 4707 return status; 4708 } 4709 4710 /* 4711 * Decode ACCESS response 4712 */ 4713 static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_accessres *res) 4714 { 4715 struct xdr_stream xdr; 4716 struct compound_hdr hdr; 4717 int status; 4718 4719 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); 4720 status = decode_compound_hdr(&xdr, &hdr); 4721 if (status) 4722 goto out; 4723 status = decode_sequence(&xdr, &res->seq_res, rqstp); 4724 if (status) 4725 goto out; 4726 status = decode_putfh(&xdr); 4727 if (status != 0) 4728 goto out; 4729 status = decode_access(&xdr, res); 4730 if (status != 0) 4731 goto out; 4732 decode_getfattr(&xdr, res->fattr, res->server, 4733 !RPC_IS_ASYNC(rqstp->rq_task)); 4734 out: 4735 return status; 4736 } 4737 4738 /* 4739 * Decode LOOKUP response 4740 */ 4741 static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_lookup_res *res) 4742 { 4743 struct xdr_stream xdr; 4744 struct compound_hdr hdr; 4745 int status; 4746 4747 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); 4748 status = decode_compound_hdr(&xdr, &hdr); 4749 if (status) 4750 goto out; 4751 status = decode_sequence(&xdr, &res->seq_res, rqstp); 4752 if (status) 4753 goto out; 4754 if ((status = decode_putfh(&xdr)) != 0) 4755 goto out; 4756 if ((status = decode_lookup(&xdr)) != 0) 4757 goto out; 4758 if ((status = decode_getfh(&xdr, res->fh)) != 0) 4759 goto out; 4760 status = decode_getfattr(&xdr, res->fattr, res->server 4761 ,!RPC_IS_ASYNC(rqstp->rq_task)); 4762 out: 4763 return status; 4764 } 4765 4766 /* 4767 * Decode LOOKUP_ROOT response 4768 */ 4769 static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_lookup_res *res) 4770 { 4771 struct xdr_stream xdr; 4772 struct compound_hdr hdr; 4773 int status; 4774 4775 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); 4776 status = decode_compound_hdr(&xdr, &hdr); 4777 if (status) 4778 goto out; 4779 status = decode_sequence(&xdr, &res->seq_res, rqstp); 4780 if (status) 4781 goto out; 4782 if ((status = decode_putrootfh(&xdr)) != 0) 4783 goto out; 4784 if ((status = decode_getfh(&xdr, res->fh)) == 0) 4785 status = decode_getfattr(&xdr, res->fattr, res->server, 4786 !RPC_IS_ASYNC(rqstp->rq_task)); 4787 out: 4788 return status; 4789 } 4790 4791 /* 4792 * Decode REMOVE response 4793 */ 4794 static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, __be32 *p, struct nfs_removeres *res) 4795 { 4796 struct xdr_stream xdr; 4797 struct compound_hdr hdr; 4798 int status; 4799 4800 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); 4801 status = decode_compound_hdr(&xdr, &hdr); 4802 if (status) 4803 goto out; 4804 status = decode_sequence(&xdr, &res->seq_res, rqstp); 4805 if (status) 4806 goto out; 4807 if ((status = decode_putfh(&xdr)) != 0) 4808 goto out; 4809 if ((status = decode_remove(&xdr, &res->cinfo)) != 0) 4810 goto out; 4811 decode_getfattr(&xdr, &res->dir_attr, res->server, 4812 !RPC_IS_ASYNC(rqstp->rq_task)); 4813 out: 4814 return status; 4815 } 4816 4817 /* 4818 * Decode RENAME response 4819 */ 4820 static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_rename_res *res) 4821 { 4822 struct xdr_stream xdr; 4823 struct compound_hdr hdr; 4824 int status; 4825 4826 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); 4827 status = decode_compound_hdr(&xdr, &hdr); 4828 if (status) 4829 goto out; 4830 status = decode_sequence(&xdr, &res->seq_res, rqstp); 4831 if (status) 4832 goto out; 4833 if ((status = decode_putfh(&xdr)) != 0) 4834 goto out; 4835 if ((status = decode_savefh(&xdr)) != 0) 4836 goto out; 4837 if ((status = decode_putfh(&xdr)) != 0) 4838 goto out; 4839 if ((status = decode_rename(&xdr, &res->old_cinfo, &res->new_cinfo)) != 0) 4840 goto out; 4841 /* Current FH is target directory */ 4842 if (decode_getfattr(&xdr, res->new_fattr, res->server, 4843 !RPC_IS_ASYNC(rqstp->rq_task)) != 0) 4844 goto out; 4845 if ((status = decode_restorefh(&xdr)) != 0) 4846 goto out; 4847 decode_getfattr(&xdr, res->old_fattr, res->server, 4848 !RPC_IS_ASYNC(rqstp->rq_task)); 4849 out: 4850 return status; 4851 } 4852 4853 /* 4854 * Decode LINK response 4855 */ 4856 static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_link_res *res) 4857 { 4858 struct xdr_stream xdr; 4859 struct compound_hdr hdr; 4860 int status; 4861 4862 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); 4863 status = decode_compound_hdr(&xdr, &hdr); 4864 if (status) 4865 goto out; 4866 status = decode_sequence(&xdr, &res->seq_res, rqstp); 4867 if (status) 4868 goto out; 4869 if ((status = decode_putfh(&xdr)) != 0) 4870 goto out; 4871 if ((status = decode_savefh(&xdr)) != 0) 4872 goto out; 4873 if ((status = decode_putfh(&xdr)) != 0) 4874 goto out; 4875 if ((status = decode_link(&xdr, &res->cinfo)) != 0) 4876 goto out; 4877 /* 4878 * Note order: OP_LINK leaves the directory as the current 4879 * filehandle. 4880 */ 4881 if (decode_getfattr(&xdr, res->dir_attr, res->server, 4882 !RPC_IS_ASYNC(rqstp->rq_task)) != 0) 4883 goto out; 4884 if ((status = decode_restorefh(&xdr)) != 0) 4885 goto out; 4886 decode_getfattr(&xdr, res->fattr, res->server, 4887 !RPC_IS_ASYNC(rqstp->rq_task)); 4888 out: 4889 return status; 4890 } 4891 4892 /* 4893 * Decode CREATE response 4894 */ 4895 static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_create_res *res) 4896 { 4897 struct xdr_stream xdr; 4898 struct compound_hdr hdr; 4899 int status; 4900 4901 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); 4902 status = decode_compound_hdr(&xdr, &hdr); 4903 if (status) 4904 goto out; 4905 status = decode_sequence(&xdr, &res->seq_res, rqstp); 4906 if (status) 4907 goto out; 4908 if ((status = decode_putfh(&xdr)) != 0) 4909 goto out; 4910 if ((status = decode_savefh(&xdr)) != 0) 4911 goto out; 4912 if ((status = decode_create(&xdr,&res->dir_cinfo)) != 0) 4913 goto out; 4914 if ((status = decode_getfh(&xdr, res->fh)) != 0) 4915 goto out; 4916 if (decode_getfattr(&xdr, res->fattr, res->server, 4917 !RPC_IS_ASYNC(rqstp->rq_task)) != 0) 4918 goto out; 4919 if ((status = decode_restorefh(&xdr)) != 0) 4920 goto out; 4921 decode_getfattr(&xdr, res->dir_fattr, res->server, 4922 !RPC_IS_ASYNC(rqstp->rq_task)); 4923 out: 4924 return status; 4925 } 4926 4927 /* 4928 * Decode SYMLINK response 4929 */ 4930 static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_create_res *res) 4931 { 4932 return nfs4_xdr_dec_create(rqstp, p, res); 4933 } 4934 4935 /* 4936 * Decode GETATTR response 4937 */ 4938 static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_getattr_res *res) 4939 { 4940 struct xdr_stream xdr; 4941 struct compound_hdr hdr; 4942 int status; 4943 4944 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); 4945 status = decode_compound_hdr(&xdr, &hdr); 4946 if (status) 4947 goto out; 4948 status = decode_sequence(&xdr, &res->seq_res, rqstp); 4949 if (status) 4950 goto out; 4951 status = decode_putfh(&xdr); 4952 if (status) 4953 goto out; 4954 status = decode_getfattr(&xdr, res->fattr, res->server, 4955 !RPC_IS_ASYNC(rqstp->rq_task)); 4956 out: 4957 return status; 4958 } 4959 4960 /* 4961 * Encode an SETACL request 4962 */ 4963 static int 4964 nfs4_xdr_enc_setacl(struct rpc_rqst *req, __be32 *p, struct nfs_setaclargs *args) 4965 { 4966 struct xdr_stream xdr; 4967 struct compound_hdr hdr = { 4968 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 4969 }; 4970 int status; 4971 4972 xdr_init_encode(&xdr, &req->rq_snd_buf, p); 4973 encode_compound_hdr(&xdr, req, &hdr); 4974 encode_sequence(&xdr, &args->seq_args, &hdr); 4975 encode_putfh(&xdr, args->fh, &hdr); 4976 status = encode_setacl(&xdr, args, &hdr); 4977 encode_nops(&hdr); 4978 return status; 4979 } 4980 4981 /* 4982 * Decode SETACL response 4983 */ 4984 static int 4985 nfs4_xdr_dec_setacl(struct rpc_rqst *rqstp, __be32 *p, 4986 struct nfs_setaclres *res) 4987 { 4988 struct xdr_stream xdr; 4989 struct compound_hdr hdr; 4990 int status; 4991 4992 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); 4993 status = decode_compound_hdr(&xdr, &hdr); 4994 if (status) 4995 goto out; 4996 status = decode_sequence(&xdr, &res->seq_res, rqstp); 4997 if (status) 4998 goto out; 4999 status = decode_putfh(&xdr); 5000 if (status) 5001 goto out; 5002 status = decode_setattr(&xdr); 5003 out: 5004 return status; 5005 } 5006 5007 /* 5008 * Decode GETACL response 5009 */ 5010 static int 5011 nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, __be32 *p, 5012 struct nfs_getaclres *res) 5013 { 5014 struct xdr_stream xdr; 5015 struct compound_hdr hdr; 5016 int status; 5017 5018 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); 5019 status = decode_compound_hdr(&xdr, &hdr); 5020 if (status) 5021 goto out; 5022 status = decode_sequence(&xdr, &res->seq_res, rqstp); 5023 if (status) 5024 goto out; 5025 status = decode_putfh(&xdr); 5026 if (status) 5027 goto out; 5028 status = decode_getacl(&xdr, rqstp, &res->acl_len); 5029 5030 out: 5031 return status; 5032 } 5033 5034 /* 5035 * Decode CLOSE response 5036 */ 5037 static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, __be32 *p, struct nfs_closeres *res) 5038 { 5039 struct xdr_stream xdr; 5040 struct compound_hdr hdr; 5041 int status; 5042 5043 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); 5044 status = decode_compound_hdr(&xdr, &hdr); 5045 if (status) 5046 goto out; 5047 status = decode_sequence(&xdr, &res->seq_res, rqstp); 5048 if (status) 5049 goto out; 5050 status = decode_putfh(&xdr); 5051 if (status) 5052 goto out; 5053 status = decode_close(&xdr, res); 5054 if (status != 0) 5055 goto out; 5056 /* 5057 * Note: Server may do delete on close for this file 5058 * in which case the getattr call will fail with 5059 * an ESTALE error. Shouldn't be a problem, 5060 * though, since fattr->valid will remain unset. 5061 */ 5062 decode_getfattr(&xdr, res->fattr, res->server, 5063 !RPC_IS_ASYNC(rqstp->rq_task)); 5064 out: 5065 return status; 5066 } 5067 5068 /* 5069 * Decode OPEN response 5070 */ 5071 static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, __be32 *p, struct nfs_openres *res) 5072 { 5073 struct xdr_stream xdr; 5074 struct compound_hdr hdr; 5075 int status; 5076 5077 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); 5078 status = decode_compound_hdr(&xdr, &hdr); 5079 if (status) 5080 goto out; 5081 status = decode_sequence(&xdr, &res->seq_res, rqstp); 5082 if (status) 5083 goto out; 5084 status = decode_putfh(&xdr); 5085 if (status) 5086 goto out; 5087 status = decode_savefh(&xdr); 5088 if (status) 5089 goto out; 5090 status = decode_open(&xdr, res); 5091 if (status) 5092 goto out; 5093 if (decode_getfh(&xdr, &res->fh) != 0) 5094 goto out; 5095 if (decode_getfattr(&xdr, res->f_attr, res->server, 5096 !RPC_IS_ASYNC(rqstp->rq_task)) != 0) 5097 goto out; 5098 if (decode_restorefh(&xdr) != 0) 5099 goto out; 5100 decode_getfattr(&xdr, res->dir_attr, res->server, 5101 !RPC_IS_ASYNC(rqstp->rq_task)); 5102 out: 5103 return status; 5104 } 5105 5106 /* 5107 * Decode OPEN_CONFIRM response 5108 */ 5109 static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp, __be32 *p, struct nfs_open_confirmres *res) 5110 { 5111 struct xdr_stream xdr; 5112 struct compound_hdr hdr; 5113 int status; 5114 5115 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); 5116 status = decode_compound_hdr(&xdr, &hdr); 5117 if (status) 5118 goto out; 5119 status = decode_putfh(&xdr); 5120 if (status) 5121 goto out; 5122 status = decode_open_confirm(&xdr, res); 5123 out: 5124 return status; 5125 } 5126 5127 /* 5128 * Decode OPEN response 5129 */ 5130 static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp, __be32 *p, struct nfs_openres *res) 5131 { 5132 struct xdr_stream xdr; 5133 struct compound_hdr hdr; 5134 int status; 5135 5136 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); 5137 status = decode_compound_hdr(&xdr, &hdr); 5138 if (status) 5139 goto out; 5140 status = decode_sequence(&xdr, &res->seq_res, rqstp); 5141 if (status) 5142 goto out; 5143 status = decode_putfh(&xdr); 5144 if (status) 5145 goto out; 5146 status = decode_open(&xdr, res); 5147 if (status) 5148 goto out; 5149 decode_getfattr(&xdr, res->f_attr, res->server, 5150 !RPC_IS_ASYNC(rqstp->rq_task)); 5151 out: 5152 return status; 5153 } 5154 5155 /* 5156 * Decode SETATTR response 5157 */ 5158 static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp, __be32 *p, struct nfs_setattrres *res) 5159 { 5160 struct xdr_stream xdr; 5161 struct compound_hdr hdr; 5162 int status; 5163 5164 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); 5165 status = decode_compound_hdr(&xdr, &hdr); 5166 if (status) 5167 goto out; 5168 status = decode_sequence(&xdr, &res->seq_res, rqstp); 5169 if (status) 5170 goto out; 5171 status = decode_putfh(&xdr); 5172 if (status) 5173 goto out; 5174 status = decode_setattr(&xdr); 5175 if (status) 5176 goto out; 5177 decode_getfattr(&xdr, res->fattr, res->server, 5178 !RPC_IS_ASYNC(rqstp->rq_task)); 5179 out: 5180 return status; 5181 } 5182 5183 /* 5184 * Decode LOCK response 5185 */ 5186 static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, __be32 *p, struct nfs_lock_res *res) 5187 { 5188 struct xdr_stream xdr; 5189 struct compound_hdr hdr; 5190 int status; 5191 5192 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); 5193 status = decode_compound_hdr(&xdr, &hdr); 5194 if (status) 5195 goto out; 5196 status = decode_sequence(&xdr, &res->seq_res, rqstp); 5197 if (status) 5198 goto out; 5199 status = decode_putfh(&xdr); 5200 if (status) 5201 goto out; 5202 status = decode_lock(&xdr, res); 5203 out: 5204 return status; 5205 } 5206 5207 /* 5208 * Decode LOCKT response 5209 */ 5210 static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, __be32 *p, struct nfs_lockt_res *res) 5211 { 5212 struct xdr_stream xdr; 5213 struct compound_hdr hdr; 5214 int status; 5215 5216 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); 5217 status = decode_compound_hdr(&xdr, &hdr); 5218 if (status) 5219 goto out; 5220 status = decode_sequence(&xdr, &res->seq_res, rqstp); 5221 if (status) 5222 goto out; 5223 status = decode_putfh(&xdr); 5224 if (status) 5225 goto out; 5226 status = decode_lockt(&xdr, res); 5227 out: 5228 return status; 5229 } 5230 5231 /* 5232 * Decode LOCKU response 5233 */ 5234 static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, __be32 *p, struct nfs_locku_res *res) 5235 { 5236 struct xdr_stream xdr; 5237 struct compound_hdr hdr; 5238 int status; 5239 5240 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); 5241 status = decode_compound_hdr(&xdr, &hdr); 5242 if (status) 5243 goto out; 5244 status = decode_sequence(&xdr, &res->seq_res, rqstp); 5245 if (status) 5246 goto out; 5247 status = decode_putfh(&xdr); 5248 if (status) 5249 goto out; 5250 status = decode_locku(&xdr, res); 5251 out: 5252 return status; 5253 } 5254 5255 /* 5256 * Decode READLINK response 5257 */ 5258 static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp, __be32 *p, 5259 struct nfs4_readlink_res *res) 5260 { 5261 struct xdr_stream xdr; 5262 struct compound_hdr hdr; 5263 int status; 5264 5265 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); 5266 status = decode_compound_hdr(&xdr, &hdr); 5267 if (status) 5268 goto out; 5269 status = decode_sequence(&xdr, &res->seq_res, rqstp); 5270 if (status) 5271 goto out; 5272 status = decode_putfh(&xdr); 5273 if (status) 5274 goto out; 5275 status = decode_readlink(&xdr, rqstp); 5276 out: 5277 return status; 5278 } 5279 5280 /* 5281 * Decode READDIR response 5282 */ 5283 static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_readdir_res *res) 5284 { 5285 struct xdr_stream xdr; 5286 struct compound_hdr hdr; 5287 int status; 5288 5289 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); 5290 status = decode_compound_hdr(&xdr, &hdr); 5291 if (status) 5292 goto out; 5293 status = decode_sequence(&xdr, &res->seq_res, rqstp); 5294 if (status) 5295 goto out; 5296 status = decode_putfh(&xdr); 5297 if (status) 5298 goto out; 5299 status = decode_readdir(&xdr, rqstp, res); 5300 out: 5301 return status; 5302 } 5303 5304 /* 5305 * Decode Read response 5306 */ 5307 static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, __be32 *p, struct nfs_readres *res) 5308 { 5309 struct xdr_stream xdr; 5310 struct compound_hdr hdr; 5311 int status; 5312 5313 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); 5314 status = decode_compound_hdr(&xdr, &hdr); 5315 if (status) 5316 goto out; 5317 status = decode_sequence(&xdr, &res->seq_res, rqstp); 5318 if (status) 5319 goto out; 5320 status = decode_putfh(&xdr); 5321 if (status) 5322 goto out; 5323 status = decode_read(&xdr, rqstp, res); 5324 if (!status) 5325 status = res->count; 5326 out: 5327 return status; 5328 } 5329 5330 /* 5331 * Decode WRITE response 5332 */ 5333 static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, __be32 *p, struct nfs_writeres *res) 5334 { 5335 struct xdr_stream xdr; 5336 struct compound_hdr hdr; 5337 int status; 5338 5339 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); 5340 status = decode_compound_hdr(&xdr, &hdr); 5341 if (status) 5342 goto out; 5343 status = decode_sequence(&xdr, &res->seq_res, rqstp); 5344 if (status) 5345 goto out; 5346 status = decode_putfh(&xdr); 5347 if (status) 5348 goto out; 5349 status = decode_write(&xdr, res); 5350 if (status) 5351 goto out; 5352 decode_getfattr(&xdr, res->fattr, res->server, 5353 !RPC_IS_ASYNC(rqstp->rq_task)); 5354 if (!status) 5355 status = res->count; 5356 out: 5357 return status; 5358 } 5359 5360 /* 5361 * Decode COMMIT response 5362 */ 5363 static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, __be32 *p, struct nfs_writeres *res) 5364 { 5365 struct xdr_stream xdr; 5366 struct compound_hdr hdr; 5367 int status; 5368 5369 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); 5370 status = decode_compound_hdr(&xdr, &hdr); 5371 if (status) 5372 goto out; 5373 status = decode_sequence(&xdr, &res->seq_res, rqstp); 5374 if (status) 5375 goto out; 5376 status = decode_putfh(&xdr); 5377 if (status) 5378 goto out; 5379 status = decode_commit(&xdr, res); 5380 if (status) 5381 goto out; 5382 decode_getfattr(&xdr, res->fattr, res->server, 5383 !RPC_IS_ASYNC(rqstp->rq_task)); 5384 out: 5385 return status; 5386 } 5387 5388 /* 5389 * Decode FSINFO response 5390 */ 5391 static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, __be32 *p, 5392 struct nfs4_fsinfo_res *res) 5393 { 5394 struct xdr_stream xdr; 5395 struct compound_hdr hdr; 5396 int status; 5397 5398 xdr_init_decode(&xdr, &req->rq_rcv_buf, p); 5399 status = decode_compound_hdr(&xdr, &hdr); 5400 if (!status) 5401 status = decode_sequence(&xdr, &res->seq_res, req); 5402 if (!status) 5403 status = decode_putfh(&xdr); 5404 if (!status) 5405 status = decode_fsinfo(&xdr, res->fsinfo); 5406 return status; 5407 } 5408 5409 /* 5410 * Decode PATHCONF response 5411 */ 5412 static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, __be32 *p, 5413 struct nfs4_pathconf_res *res) 5414 { 5415 struct xdr_stream xdr; 5416 struct compound_hdr hdr; 5417 int status; 5418 5419 xdr_init_decode(&xdr, &req->rq_rcv_buf, p); 5420 status = decode_compound_hdr(&xdr, &hdr); 5421 if (!status) 5422 status = decode_sequence(&xdr, &res->seq_res, req); 5423 if (!status) 5424 status = decode_putfh(&xdr); 5425 if (!status) 5426 status = decode_pathconf(&xdr, res->pathconf); 5427 return status; 5428 } 5429 5430 /* 5431 * Decode STATFS response 5432 */ 5433 static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, __be32 *p, 5434 struct nfs4_statfs_res *res) 5435 { 5436 struct xdr_stream xdr; 5437 struct compound_hdr hdr; 5438 int status; 5439 5440 xdr_init_decode(&xdr, &req->rq_rcv_buf, p); 5441 status = decode_compound_hdr(&xdr, &hdr); 5442 if (!status) 5443 status = decode_sequence(&xdr, &res->seq_res, req); 5444 if (!status) 5445 status = decode_putfh(&xdr); 5446 if (!status) 5447 status = decode_statfs(&xdr, res->fsstat); 5448 return status; 5449 } 5450 5451 /* 5452 * Decode GETATTR_BITMAP response 5453 */ 5454 static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req, __be32 *p, struct nfs4_server_caps_res *res) 5455 { 5456 struct xdr_stream xdr; 5457 struct compound_hdr hdr; 5458 int status; 5459 5460 xdr_init_decode(&xdr, &req->rq_rcv_buf, p); 5461 status = decode_compound_hdr(&xdr, &hdr); 5462 if (status) 5463 goto out; 5464 status = decode_sequence(&xdr, &res->seq_res, req); 5465 if (status) 5466 goto out; 5467 if ((status = decode_putfh(&xdr)) != 0) 5468 goto out; 5469 status = decode_server_caps(&xdr, res); 5470 out: 5471 return status; 5472 } 5473 5474 /* 5475 * Decode RENEW response 5476 */ 5477 static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, __be32 *p, void *dummy) 5478 { 5479 struct xdr_stream xdr; 5480 struct compound_hdr hdr; 5481 int status; 5482 5483 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); 5484 status = decode_compound_hdr(&xdr, &hdr); 5485 if (!status) 5486 status = decode_renew(&xdr); 5487 return status; 5488 } 5489 5490 /* 5491 * Decode SETCLIENTID response 5492 */ 5493 static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req, __be32 *p, 5494 struct nfs_client *clp) 5495 { 5496 struct xdr_stream xdr; 5497 struct compound_hdr hdr; 5498 int status; 5499 5500 xdr_init_decode(&xdr, &req->rq_rcv_buf, p); 5501 status = decode_compound_hdr(&xdr, &hdr); 5502 if (!status) 5503 status = decode_setclientid(&xdr, clp); 5504 return status; 5505 } 5506 5507 /* 5508 * Decode SETCLIENTID_CONFIRM response 5509 */ 5510 static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req, __be32 *p, struct nfs_fsinfo *fsinfo) 5511 { 5512 struct xdr_stream xdr; 5513 struct compound_hdr hdr; 5514 int status; 5515 5516 xdr_init_decode(&xdr, &req->rq_rcv_buf, p); 5517 status = decode_compound_hdr(&xdr, &hdr); 5518 if (!status) 5519 status = decode_setclientid_confirm(&xdr); 5520 if (!status) 5521 status = decode_putrootfh(&xdr); 5522 if (!status) 5523 status = decode_fsinfo(&xdr, fsinfo); 5524 return status; 5525 } 5526 5527 /* 5528 * Decode DELEGRETURN response 5529 */ 5530 static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_delegreturnres *res) 5531 { 5532 struct xdr_stream xdr; 5533 struct compound_hdr hdr; 5534 int status; 5535 5536 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); 5537 status = decode_compound_hdr(&xdr, &hdr); 5538 if (status) 5539 goto out; 5540 status = decode_sequence(&xdr, &res->seq_res, rqstp); 5541 if (status) 5542 goto out; 5543 status = decode_putfh(&xdr); 5544 if (status != 0) 5545 goto out; 5546 status = decode_delegreturn(&xdr); 5547 decode_getfattr(&xdr, res->fattr, res->server, 5548 !RPC_IS_ASYNC(rqstp->rq_task)); 5549 out: 5550 return status; 5551 } 5552 5553 /* 5554 * Decode FS_LOCATIONS response 5555 */ 5556 static int nfs4_xdr_dec_fs_locations(struct rpc_rqst *req, __be32 *p, 5557 struct nfs4_fs_locations_res *res) 5558 { 5559 struct xdr_stream xdr; 5560 struct compound_hdr hdr; 5561 int status; 5562 5563 xdr_init_decode(&xdr, &req->rq_rcv_buf, p); 5564 status = decode_compound_hdr(&xdr, &hdr); 5565 if (status) 5566 goto out; 5567 status = decode_sequence(&xdr, &res->seq_res, req); 5568 if (status) 5569 goto out; 5570 if ((status = decode_putfh(&xdr)) != 0) 5571 goto out; 5572 if ((status = decode_lookup(&xdr)) != 0) 5573 goto out; 5574 xdr_enter_page(&xdr, PAGE_SIZE); 5575 status = decode_getfattr(&xdr, &res->fs_locations->fattr, 5576 res->fs_locations->server, 5577 !RPC_IS_ASYNC(req->rq_task)); 5578 out: 5579 return status; 5580 } 5581 5582 #if defined(CONFIG_NFS_V4_1) 5583 /* 5584 * Decode EXCHANGE_ID response 5585 */ 5586 static int nfs4_xdr_dec_exchange_id(struct rpc_rqst *rqstp, uint32_t *p, 5587 void *res) 5588 { 5589 struct xdr_stream xdr; 5590 struct compound_hdr hdr; 5591 int status; 5592 5593 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); 5594 status = decode_compound_hdr(&xdr, &hdr); 5595 if (!status) 5596 status = decode_exchange_id(&xdr, res); 5597 return status; 5598 } 5599 5600 /* 5601 * Decode CREATE_SESSION response 5602 */ 5603 static int nfs4_xdr_dec_create_session(struct rpc_rqst *rqstp, uint32_t *p, 5604 struct nfs41_create_session_res *res) 5605 { 5606 struct xdr_stream xdr; 5607 struct compound_hdr hdr; 5608 int status; 5609 5610 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); 5611 status = decode_compound_hdr(&xdr, &hdr); 5612 if (!status) 5613 status = decode_create_session(&xdr, res); 5614 return status; 5615 } 5616 5617 /* 5618 * Decode DESTROY_SESSION response 5619 */ 5620 static int nfs4_xdr_dec_destroy_session(struct rpc_rqst *rqstp, uint32_t *p, 5621 void *dummy) 5622 { 5623 struct xdr_stream xdr; 5624 struct compound_hdr hdr; 5625 int status; 5626 5627 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); 5628 status = decode_compound_hdr(&xdr, &hdr); 5629 if (!status) 5630 status = decode_destroy_session(&xdr, dummy); 5631 return status; 5632 } 5633 5634 /* 5635 * Decode SEQUENCE response 5636 */ 5637 static int nfs4_xdr_dec_sequence(struct rpc_rqst *rqstp, uint32_t *p, 5638 struct nfs4_sequence_res *res) 5639 { 5640 struct xdr_stream xdr; 5641 struct compound_hdr hdr; 5642 int status; 5643 5644 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); 5645 status = decode_compound_hdr(&xdr, &hdr); 5646 if (!status) 5647 status = decode_sequence(&xdr, res, rqstp); 5648 return status; 5649 } 5650 5651 /* 5652 * Decode GET_LEASE_TIME response 5653 */ 5654 static int nfs4_xdr_dec_get_lease_time(struct rpc_rqst *rqstp, uint32_t *p, 5655 struct nfs4_get_lease_time_res *res) 5656 { 5657 struct xdr_stream xdr; 5658 struct compound_hdr hdr; 5659 int status; 5660 5661 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); 5662 status = decode_compound_hdr(&xdr, &hdr); 5663 if (!status) 5664 status = decode_sequence(&xdr, &res->lr_seq_res, rqstp); 5665 if (!status) 5666 status = decode_putrootfh(&xdr); 5667 if (!status) 5668 status = decode_fsinfo(&xdr, res->lr_fsinfo); 5669 return status; 5670 } 5671 5672 /* 5673 * Decode RECLAIM_COMPLETE response 5674 */ 5675 static int nfs4_xdr_dec_reclaim_complete(struct rpc_rqst *rqstp, uint32_t *p, 5676 struct nfs41_reclaim_complete_res *res) 5677 { 5678 struct xdr_stream xdr; 5679 struct compound_hdr hdr; 5680 int status; 5681 5682 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); 5683 status = decode_compound_hdr(&xdr, &hdr); 5684 if (!status) 5685 status = decode_sequence(&xdr, &res->seq_res, rqstp); 5686 if (!status) 5687 status = decode_reclaim_complete(&xdr, (void *)NULL); 5688 return status; 5689 } 5690 #endif /* CONFIG_NFS_V4_1 */ 5691 5692 __be32 *nfs4_decode_dirent(__be32 *p, struct nfs_entry *entry, int plus) 5693 { 5694 uint32_t bitmap[2] = {0}; 5695 uint32_t len; 5696 5697 if (!*p++) { 5698 if (!*p) 5699 return ERR_PTR(-EAGAIN); 5700 entry->eof = 1; 5701 return ERR_PTR(-EBADCOOKIE); 5702 } 5703 5704 entry->prev_cookie = entry->cookie; 5705 p = xdr_decode_hyper(p, &entry->cookie); 5706 entry->len = ntohl(*p++); 5707 entry->name = (const char *) p; 5708 p += XDR_QUADLEN(entry->len); 5709 5710 /* 5711 * In case the server doesn't return an inode number, 5712 * we fake one here. (We don't use inode number 0, 5713 * since glibc seems to choke on it...) 5714 */ 5715 entry->ino = 1; 5716 5717 len = ntohl(*p++); /* bitmap length */ 5718 if (len-- > 0) { 5719 bitmap[0] = ntohl(*p++); 5720 if (len-- > 0) { 5721 bitmap[1] = ntohl(*p++); 5722 p += len; 5723 } 5724 } 5725 len = XDR_QUADLEN(ntohl(*p++)); /* attribute buffer length */ 5726 if (len > 0) { 5727 if (bitmap[0] & FATTR4_WORD0_RDATTR_ERROR) { 5728 bitmap[0] &= ~FATTR4_WORD0_RDATTR_ERROR; 5729 /* Ignore the return value of rdattr_error for now */ 5730 p++; 5731 len--; 5732 } 5733 if (bitmap[0] == 0 && bitmap[1] == FATTR4_WORD1_MOUNTED_ON_FILEID) 5734 xdr_decode_hyper(p, &entry->ino); 5735 else if (bitmap[0] == FATTR4_WORD0_FILEID) 5736 xdr_decode_hyper(p, &entry->ino); 5737 p += len; 5738 } 5739 5740 entry->eof = !p[0] && p[1]; 5741 return p; 5742 } 5743 5744 /* 5745 * We need to translate between nfs status return values and 5746 * the local errno values which may not be the same. 5747 */ 5748 static struct { 5749 int stat; 5750 int errno; 5751 } nfs_errtbl[] = { 5752 { NFS4_OK, 0 }, 5753 { NFS4ERR_PERM, -EPERM }, 5754 { NFS4ERR_NOENT, -ENOENT }, 5755 { NFS4ERR_IO, -errno_NFSERR_IO}, 5756 { NFS4ERR_NXIO, -ENXIO }, 5757 { NFS4ERR_ACCESS, -EACCES }, 5758 { NFS4ERR_EXIST, -EEXIST }, 5759 { NFS4ERR_XDEV, -EXDEV }, 5760 { NFS4ERR_NOTDIR, -ENOTDIR }, 5761 { NFS4ERR_ISDIR, -EISDIR }, 5762 { NFS4ERR_INVAL, -EINVAL }, 5763 { NFS4ERR_FBIG, -EFBIG }, 5764 { NFS4ERR_NOSPC, -ENOSPC }, 5765 { NFS4ERR_ROFS, -EROFS }, 5766 { NFS4ERR_MLINK, -EMLINK }, 5767 { NFS4ERR_NAMETOOLONG, -ENAMETOOLONG }, 5768 { NFS4ERR_NOTEMPTY, -ENOTEMPTY }, 5769 { NFS4ERR_DQUOT, -EDQUOT }, 5770 { NFS4ERR_STALE, -ESTALE }, 5771 { NFS4ERR_BADHANDLE, -EBADHANDLE }, 5772 { NFS4ERR_BADOWNER, -EINVAL }, 5773 { NFS4ERR_BADNAME, -EINVAL }, 5774 { NFS4ERR_BAD_COOKIE, -EBADCOOKIE }, 5775 { NFS4ERR_NOTSUPP, -ENOTSUPP }, 5776 { NFS4ERR_TOOSMALL, -ETOOSMALL }, 5777 { NFS4ERR_SERVERFAULT, -ESERVERFAULT }, 5778 { NFS4ERR_BADTYPE, -EBADTYPE }, 5779 { NFS4ERR_LOCKED, -EAGAIN }, 5780 { NFS4ERR_SYMLINK, -ELOOP }, 5781 { NFS4ERR_OP_ILLEGAL, -EOPNOTSUPP }, 5782 { NFS4ERR_DEADLOCK, -EDEADLK }, 5783 { NFS4ERR_WRONGSEC, -EPERM }, /* FIXME: this needs 5784 * to be handled by a 5785 * middle-layer. 5786 */ 5787 { -1, -EIO } 5788 }; 5789 5790 /* 5791 * Convert an NFS error code to a local one. 5792 * This one is used jointly by NFSv2 and NFSv3. 5793 */ 5794 static int 5795 nfs4_stat_to_errno(int stat) 5796 { 5797 int i; 5798 for (i = 0; nfs_errtbl[i].stat != -1; i++) { 5799 if (nfs_errtbl[i].stat == stat) 5800 return nfs_errtbl[i].errno; 5801 } 5802 if (stat <= 10000 || stat > 10100) { 5803 /* The server is looney tunes. */ 5804 return -ESERVERFAULT; 5805 } 5806 /* If we cannot translate the error, the recovery routines should 5807 * handle it. 5808 * Note: remaining NFSv4 error codes have values > 10000, so should 5809 * not conflict with native Linux error codes. 5810 */ 5811 return -stat; 5812 } 5813 5814 #define PROC(proc, argtype, restype) \ 5815 [NFSPROC4_CLNT_##proc] = { \ 5816 .p_proc = NFSPROC4_COMPOUND, \ 5817 .p_encode = (kxdrproc_t) nfs4_xdr_##argtype, \ 5818 .p_decode = (kxdrproc_t) nfs4_xdr_##restype, \ 5819 .p_arglen = NFS4_##argtype##_sz, \ 5820 .p_replen = NFS4_##restype##_sz, \ 5821 .p_statidx = NFSPROC4_CLNT_##proc, \ 5822 .p_name = #proc, \ 5823 } 5824 5825 struct rpc_procinfo nfs4_procedures[] = { 5826 PROC(READ, enc_read, dec_read), 5827 PROC(WRITE, enc_write, dec_write), 5828 PROC(COMMIT, enc_commit, dec_commit), 5829 PROC(OPEN, enc_open, dec_open), 5830 PROC(OPEN_CONFIRM, enc_open_confirm, dec_open_confirm), 5831 PROC(OPEN_NOATTR, enc_open_noattr, dec_open_noattr), 5832 PROC(OPEN_DOWNGRADE, enc_open_downgrade, dec_open_downgrade), 5833 PROC(CLOSE, enc_close, dec_close), 5834 PROC(SETATTR, enc_setattr, dec_setattr), 5835 PROC(FSINFO, enc_fsinfo, dec_fsinfo), 5836 PROC(RENEW, enc_renew, dec_renew), 5837 PROC(SETCLIENTID, enc_setclientid, dec_setclientid), 5838 PROC(SETCLIENTID_CONFIRM, enc_setclientid_confirm, dec_setclientid_confirm), 5839 PROC(LOCK, enc_lock, dec_lock), 5840 PROC(LOCKT, enc_lockt, dec_lockt), 5841 PROC(LOCKU, enc_locku, dec_locku), 5842 PROC(ACCESS, enc_access, dec_access), 5843 PROC(GETATTR, enc_getattr, dec_getattr), 5844 PROC(LOOKUP, enc_lookup, dec_lookup), 5845 PROC(LOOKUP_ROOT, enc_lookup_root, dec_lookup_root), 5846 PROC(REMOVE, enc_remove, dec_remove), 5847 PROC(RENAME, enc_rename, dec_rename), 5848 PROC(LINK, enc_link, dec_link), 5849 PROC(SYMLINK, enc_symlink, dec_symlink), 5850 PROC(CREATE, enc_create, dec_create), 5851 PROC(PATHCONF, enc_pathconf, dec_pathconf), 5852 PROC(STATFS, enc_statfs, dec_statfs), 5853 PROC(READLINK, enc_readlink, dec_readlink), 5854 PROC(READDIR, enc_readdir, dec_readdir), 5855 PROC(SERVER_CAPS, enc_server_caps, dec_server_caps), 5856 PROC(DELEGRETURN, enc_delegreturn, dec_delegreturn), 5857 PROC(GETACL, enc_getacl, dec_getacl), 5858 PROC(SETACL, enc_setacl, dec_setacl), 5859 PROC(FS_LOCATIONS, enc_fs_locations, dec_fs_locations), 5860 #if defined(CONFIG_NFS_V4_1) 5861 PROC(EXCHANGE_ID, enc_exchange_id, dec_exchange_id), 5862 PROC(CREATE_SESSION, enc_create_session, dec_create_session), 5863 PROC(DESTROY_SESSION, enc_destroy_session, dec_destroy_session), 5864 PROC(SEQUENCE, enc_sequence, dec_sequence), 5865 PROC(GET_LEASE_TIME, enc_get_lease_time, dec_get_lease_time), 5866 PROC(RECLAIM_COMPLETE, enc_reclaim_complete, dec_reclaim_complete), 5867 #endif /* CONFIG_NFS_V4_1 */ 5868 }; 5869 5870 struct rpc_version nfs_version4 = { 5871 .number = 4, 5872 .nrprocs = ARRAY_SIZE(nfs4_procedures), 5873 .procs = nfs4_procedures 5874 }; 5875 5876 /* 5877 * Local variables: 5878 * c-basic-offset: 8 5879 * End: 5880 */ 5881