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/errno.h> 42 #include <linux/string.h> 43 #include <linux/in.h> 44 #include <linux/pagemap.h> 45 #include <linux/proc_fs.h> 46 #include <linux/kdev_t.h> 47 #include <linux/sunrpc/clnt.h> 48 #include <linux/sunrpc/msg_prot.h> 49 #include <linux/sunrpc/gss_api.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 #include "pnfs.h" 57 58 #define NFSDBG_FACILITY NFSDBG_XDR 59 60 /* Mapping from NFS error code to "errno" error code. */ 61 #define errno_NFSERR_IO EIO 62 63 static int nfs4_stat_to_errno(int); 64 65 /* NFSv4 COMPOUND tags are only wanted for debugging purposes */ 66 #ifdef DEBUG 67 #define NFS4_MAXTAGLEN 20 68 #else 69 #define NFS4_MAXTAGLEN 0 70 #endif 71 72 /* lock,open owner id: 73 * we currently use size 2 (u64) out of (NFS4_OPAQUE_LIMIT >> 2) 74 */ 75 #define open_owner_id_maxsz (1 + 1 + 4) 76 #define lock_owner_id_maxsz (1 + 1 + 4) 77 #define decode_lockowner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ)) 78 #define compound_encode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2)) 79 #define compound_decode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2)) 80 #define op_encode_hdr_maxsz (1) 81 #define op_decode_hdr_maxsz (2) 82 #define encode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE)) 83 #define decode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE)) 84 #define encode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE)) 85 #define decode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE)) 86 #define encode_putfh_maxsz (op_encode_hdr_maxsz + 1 + \ 87 (NFS4_FHSIZE >> 2)) 88 #define decode_putfh_maxsz (op_decode_hdr_maxsz) 89 #define encode_putrootfh_maxsz (op_encode_hdr_maxsz) 90 #define decode_putrootfh_maxsz (op_decode_hdr_maxsz) 91 #define encode_getfh_maxsz (op_encode_hdr_maxsz) 92 #define decode_getfh_maxsz (op_decode_hdr_maxsz + 1 + \ 93 ((3+NFS4_FHSIZE) >> 2)) 94 #define nfs4_fattr_bitmap_maxsz 4 95 #define encode_getattr_maxsz (op_encode_hdr_maxsz + nfs4_fattr_bitmap_maxsz) 96 #define nfs4_name_maxsz (1 + ((3 + NFS4_MAXNAMLEN) >> 2)) 97 #define nfs4_path_maxsz (1 + ((3 + NFS4_MAXPATHLEN) >> 2)) 98 #define nfs4_owner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ)) 99 #define nfs4_group_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ)) 100 /* This is based on getfattr, which uses the most attributes: */ 101 #define nfs4_fattr_value_maxsz (1 + (1 + 2 + 2 + 4 + 2 + 1 + 1 + 2 + 2 + \ 102 3 + 3 + 3 + nfs4_owner_maxsz + nfs4_group_maxsz)) 103 #define nfs4_fattr_maxsz (nfs4_fattr_bitmap_maxsz + \ 104 nfs4_fattr_value_maxsz) 105 #define decode_getattr_maxsz (op_decode_hdr_maxsz + nfs4_fattr_maxsz) 106 #define encode_attrs_maxsz (nfs4_fattr_bitmap_maxsz + \ 107 1 + 2 + 1 + \ 108 nfs4_owner_maxsz + \ 109 nfs4_group_maxsz + \ 110 4 + 4) 111 #define encode_savefh_maxsz (op_encode_hdr_maxsz) 112 #define decode_savefh_maxsz (op_decode_hdr_maxsz) 113 #define encode_restorefh_maxsz (op_encode_hdr_maxsz) 114 #define decode_restorefh_maxsz (op_decode_hdr_maxsz) 115 #define encode_fsinfo_maxsz (encode_getattr_maxsz) 116 /* The 5 accounts for the PNFS attributes, and assumes that at most three 117 * layout types will be returned. 118 */ 119 #define decode_fsinfo_maxsz (op_decode_hdr_maxsz + \ 120 nfs4_fattr_bitmap_maxsz + 4 + 8 + 5) 121 #define encode_renew_maxsz (op_encode_hdr_maxsz + 3) 122 #define decode_renew_maxsz (op_decode_hdr_maxsz) 123 #define encode_setclientid_maxsz \ 124 (op_encode_hdr_maxsz + \ 125 XDR_QUADLEN(NFS4_VERIFIER_SIZE) + \ 126 XDR_QUADLEN(NFS4_SETCLIENTID_NAMELEN) + \ 127 1 /* sc_prog */ + \ 128 XDR_QUADLEN(RPCBIND_MAXNETIDLEN) + \ 129 XDR_QUADLEN(RPCBIND_MAXUADDRLEN) + \ 130 1) /* sc_cb_ident */ 131 #define decode_setclientid_maxsz \ 132 (op_decode_hdr_maxsz + \ 133 2 + \ 134 1024) /* large value for CLID_INUSE */ 135 #define encode_setclientid_confirm_maxsz \ 136 (op_encode_hdr_maxsz + \ 137 3 + (NFS4_VERIFIER_SIZE >> 2)) 138 #define decode_setclientid_confirm_maxsz \ 139 (op_decode_hdr_maxsz) 140 #define encode_lookup_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz) 141 #define decode_lookup_maxsz (op_decode_hdr_maxsz) 142 #define encode_share_access_maxsz \ 143 (2) 144 #define encode_createmode_maxsz (1 + encode_attrs_maxsz + encode_verifier_maxsz) 145 #define encode_opentype_maxsz (1 + encode_createmode_maxsz) 146 #define encode_claim_null_maxsz (1 + nfs4_name_maxsz) 147 #define encode_open_maxsz (op_encode_hdr_maxsz + \ 148 2 + encode_share_access_maxsz + 2 + \ 149 open_owner_id_maxsz + \ 150 encode_opentype_maxsz + \ 151 encode_claim_null_maxsz) 152 #define decode_ace_maxsz (3 + nfs4_owner_maxsz) 153 #define decode_delegation_maxsz (1 + decode_stateid_maxsz + 1 + \ 154 decode_ace_maxsz) 155 #define decode_change_info_maxsz (5) 156 #define decode_open_maxsz (op_decode_hdr_maxsz + \ 157 decode_stateid_maxsz + \ 158 decode_change_info_maxsz + 1 + \ 159 nfs4_fattr_bitmap_maxsz + \ 160 decode_delegation_maxsz) 161 #define encode_open_confirm_maxsz \ 162 (op_encode_hdr_maxsz + \ 163 encode_stateid_maxsz + 1) 164 #define decode_open_confirm_maxsz \ 165 (op_decode_hdr_maxsz + \ 166 decode_stateid_maxsz) 167 #define encode_open_downgrade_maxsz \ 168 (op_encode_hdr_maxsz + \ 169 encode_stateid_maxsz + 1 + \ 170 encode_share_access_maxsz) 171 #define decode_open_downgrade_maxsz \ 172 (op_decode_hdr_maxsz + \ 173 decode_stateid_maxsz) 174 #define encode_close_maxsz (op_encode_hdr_maxsz + \ 175 1 + encode_stateid_maxsz) 176 #define decode_close_maxsz (op_decode_hdr_maxsz + \ 177 decode_stateid_maxsz) 178 #define encode_setattr_maxsz (op_encode_hdr_maxsz + \ 179 encode_stateid_maxsz + \ 180 encode_attrs_maxsz) 181 #define decode_setattr_maxsz (op_decode_hdr_maxsz + \ 182 nfs4_fattr_bitmap_maxsz) 183 #define encode_read_maxsz (op_encode_hdr_maxsz + \ 184 encode_stateid_maxsz + 3) 185 #define decode_read_maxsz (op_decode_hdr_maxsz + 2) 186 #define encode_readdir_maxsz (op_encode_hdr_maxsz + \ 187 2 + encode_verifier_maxsz + 5) 188 #define decode_readdir_maxsz (op_decode_hdr_maxsz + \ 189 decode_verifier_maxsz) 190 #define encode_readlink_maxsz (op_encode_hdr_maxsz) 191 #define decode_readlink_maxsz (op_decode_hdr_maxsz + 1) 192 #define encode_write_maxsz (op_encode_hdr_maxsz + \ 193 encode_stateid_maxsz + 4) 194 #define decode_write_maxsz (op_decode_hdr_maxsz + \ 195 2 + decode_verifier_maxsz) 196 #define encode_commit_maxsz (op_encode_hdr_maxsz + 3) 197 #define decode_commit_maxsz (op_decode_hdr_maxsz + \ 198 decode_verifier_maxsz) 199 #define encode_remove_maxsz (op_encode_hdr_maxsz + \ 200 nfs4_name_maxsz) 201 #define decode_remove_maxsz (op_decode_hdr_maxsz + \ 202 decode_change_info_maxsz) 203 #define encode_rename_maxsz (op_encode_hdr_maxsz + \ 204 2 * nfs4_name_maxsz) 205 #define decode_rename_maxsz (op_decode_hdr_maxsz + \ 206 decode_change_info_maxsz + \ 207 decode_change_info_maxsz) 208 #define encode_link_maxsz (op_encode_hdr_maxsz + \ 209 nfs4_name_maxsz) 210 #define decode_link_maxsz (op_decode_hdr_maxsz + decode_change_info_maxsz) 211 #define encode_lockowner_maxsz (7) 212 #define encode_lock_maxsz (op_encode_hdr_maxsz + \ 213 7 + \ 214 1 + encode_stateid_maxsz + 1 + \ 215 encode_lockowner_maxsz) 216 #define decode_lock_denied_maxsz \ 217 (8 + decode_lockowner_maxsz) 218 #define decode_lock_maxsz (op_decode_hdr_maxsz + \ 219 decode_lock_denied_maxsz) 220 #define encode_lockt_maxsz (op_encode_hdr_maxsz + 5 + \ 221 encode_lockowner_maxsz) 222 #define decode_lockt_maxsz (op_decode_hdr_maxsz + \ 223 decode_lock_denied_maxsz) 224 #define encode_locku_maxsz (op_encode_hdr_maxsz + 3 + \ 225 encode_stateid_maxsz + \ 226 4) 227 #define decode_locku_maxsz (op_decode_hdr_maxsz + \ 228 decode_stateid_maxsz) 229 #define encode_release_lockowner_maxsz \ 230 (op_encode_hdr_maxsz + \ 231 encode_lockowner_maxsz) 232 #define decode_release_lockowner_maxsz \ 233 (op_decode_hdr_maxsz) 234 #define encode_access_maxsz (op_encode_hdr_maxsz + 1) 235 #define decode_access_maxsz (op_decode_hdr_maxsz + 2) 236 #define encode_symlink_maxsz (op_encode_hdr_maxsz + \ 237 1 + nfs4_name_maxsz + \ 238 1 + \ 239 nfs4_fattr_maxsz) 240 #define decode_symlink_maxsz (op_decode_hdr_maxsz + 8) 241 #define encode_create_maxsz (op_encode_hdr_maxsz + \ 242 1 + 2 + nfs4_name_maxsz + \ 243 encode_attrs_maxsz) 244 #define decode_create_maxsz (op_decode_hdr_maxsz + \ 245 decode_change_info_maxsz + \ 246 nfs4_fattr_bitmap_maxsz) 247 #define encode_statfs_maxsz (encode_getattr_maxsz) 248 #define decode_statfs_maxsz (decode_getattr_maxsz) 249 #define encode_delegreturn_maxsz (op_encode_hdr_maxsz + 4) 250 #define decode_delegreturn_maxsz (op_decode_hdr_maxsz) 251 #define encode_getacl_maxsz (encode_getattr_maxsz) 252 #define decode_getacl_maxsz (op_decode_hdr_maxsz + \ 253 nfs4_fattr_bitmap_maxsz + 1) 254 #define encode_setacl_maxsz (op_encode_hdr_maxsz + \ 255 encode_stateid_maxsz + 3) 256 #define decode_setacl_maxsz (decode_setattr_maxsz) 257 #define encode_fs_locations_maxsz \ 258 (encode_getattr_maxsz) 259 #define decode_fs_locations_maxsz \ 260 (0) 261 #define encode_secinfo_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz) 262 #define decode_secinfo_maxsz (op_decode_hdr_maxsz + 1 + ((NFS_MAX_SECFLAVORS * (16 + GSS_OID_MAX_LEN)) / 4)) 263 264 #if defined(CONFIG_NFS_V4_1) 265 #define NFS4_MAX_MACHINE_NAME_LEN (64) 266 267 #define encode_exchange_id_maxsz (op_encode_hdr_maxsz + \ 268 encode_verifier_maxsz + \ 269 1 /* co_ownerid.len */ + \ 270 XDR_QUADLEN(NFS4_EXCHANGE_ID_LEN) + \ 271 1 /* flags */ + \ 272 1 /* spa_how */ + \ 273 0 /* SP4_NONE (for now) */ + \ 274 1 /* zero implemetation id array */) 275 #define decode_exchange_id_maxsz (op_decode_hdr_maxsz + \ 276 2 /* eir_clientid */ + \ 277 1 /* eir_sequenceid */ + \ 278 1 /* eir_flags */ + \ 279 1 /* spr_how */ + \ 280 0 /* SP4_NONE (for now) */ + \ 281 2 /* eir_server_owner.so_minor_id */ + \ 282 /* eir_server_owner.so_major_id<> */ \ 283 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \ 284 /* eir_server_scope<> */ \ 285 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \ 286 1 /* eir_server_impl_id array length */ + \ 287 0 /* ignored eir_server_impl_id contents */) 288 #define encode_channel_attrs_maxsz (6 + 1 /* ca_rdma_ird.len (0) */) 289 #define decode_channel_attrs_maxsz (6 + \ 290 1 /* ca_rdma_ird.len */ + \ 291 1 /* ca_rdma_ird */) 292 #define encode_create_session_maxsz (op_encode_hdr_maxsz + \ 293 2 /* csa_clientid */ + \ 294 1 /* csa_sequence */ + \ 295 1 /* csa_flags */ + \ 296 encode_channel_attrs_maxsz + \ 297 encode_channel_attrs_maxsz + \ 298 1 /* csa_cb_program */ + \ 299 1 /* csa_sec_parms.len (1) */ + \ 300 1 /* cb_secflavor (AUTH_SYS) */ + \ 301 1 /* stamp */ + \ 302 1 /* machinename.len */ + \ 303 XDR_QUADLEN(NFS4_MAX_MACHINE_NAME_LEN) + \ 304 1 /* uid */ + \ 305 1 /* gid */ + \ 306 1 /* gids.len (0) */) 307 #define decode_create_session_maxsz (op_decode_hdr_maxsz + \ 308 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \ 309 1 /* csr_sequence */ + \ 310 1 /* csr_flags */ + \ 311 decode_channel_attrs_maxsz + \ 312 decode_channel_attrs_maxsz) 313 #define encode_destroy_session_maxsz (op_encode_hdr_maxsz + 4) 314 #define decode_destroy_session_maxsz (op_decode_hdr_maxsz) 315 #define encode_sequence_maxsz (op_encode_hdr_maxsz + \ 316 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 4) 317 #define decode_sequence_maxsz (op_decode_hdr_maxsz + \ 318 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 5) 319 #define encode_reclaim_complete_maxsz (op_encode_hdr_maxsz + 4) 320 #define decode_reclaim_complete_maxsz (op_decode_hdr_maxsz + 4) 321 #define encode_getdevicelist_maxsz (op_encode_hdr_maxsz + 4 + \ 322 encode_verifier_maxsz) 323 #define decode_getdevicelist_maxsz (op_decode_hdr_maxsz + \ 324 2 /* nfs_cookie4 gdlr_cookie */ + \ 325 decode_verifier_maxsz \ 326 /* verifier4 gdlr_verifier */ + \ 327 1 /* gdlr_deviceid_list count */ + \ 328 XDR_QUADLEN(NFS4_PNFS_GETDEVLIST_MAXNUM * \ 329 NFS4_DEVICEID4_SIZE) \ 330 /* gdlr_deviceid_list */ + \ 331 1 /* bool gdlr_eof */) 332 #define encode_getdeviceinfo_maxsz (op_encode_hdr_maxsz + 4 + \ 333 XDR_QUADLEN(NFS4_DEVICEID4_SIZE)) 334 #define decode_getdeviceinfo_maxsz (op_decode_hdr_maxsz + \ 335 1 /* layout type */ + \ 336 1 /* opaque devaddr4 length */ + \ 337 /* devaddr4 payload is read into page */ \ 338 1 /* notification bitmap length */ + \ 339 1 /* notification bitmap */) 340 #define encode_layoutget_maxsz (op_encode_hdr_maxsz + 10 + \ 341 encode_stateid_maxsz) 342 #define decode_layoutget_maxsz (op_decode_hdr_maxsz + 8 + \ 343 decode_stateid_maxsz + \ 344 XDR_QUADLEN(PNFS_LAYOUT_MAXSIZE)) 345 #define encode_layoutcommit_maxsz (op_encode_hdr_maxsz + \ 346 2 /* offset */ + \ 347 2 /* length */ + \ 348 1 /* reclaim */ + \ 349 encode_stateid_maxsz + \ 350 1 /* new offset (true) */ + \ 351 2 /* last byte written */ + \ 352 1 /* nt_timechanged (false) */ + \ 353 1 /* layoutupdate4 layout type */ + \ 354 1 /* NULL filelayout layoutupdate4 payload */) 355 #define decode_layoutcommit_maxsz (op_decode_hdr_maxsz + 3) 356 #define encode_layoutreturn_maxsz (8 + op_encode_hdr_maxsz + \ 357 encode_stateid_maxsz + \ 358 1 /* FIXME: opaque lrf_body always empty at the moment */) 359 #define decode_layoutreturn_maxsz (op_decode_hdr_maxsz + \ 360 1 + decode_stateid_maxsz) 361 #define encode_secinfo_no_name_maxsz (op_encode_hdr_maxsz + 1) 362 #define decode_secinfo_no_name_maxsz decode_secinfo_maxsz 363 #define encode_test_stateid_maxsz (op_encode_hdr_maxsz + 2 + \ 364 XDR_QUADLEN(NFS4_STATEID_SIZE)) 365 #define decode_test_stateid_maxsz (op_decode_hdr_maxsz + 2 + 1) 366 #define encode_free_stateid_maxsz (op_encode_hdr_maxsz + 1 + \ 367 XDR_QUADLEN(NFS4_STATEID_SIZE)) 368 #define decode_free_stateid_maxsz (op_decode_hdr_maxsz + 1) 369 #else /* CONFIG_NFS_V4_1 */ 370 #define encode_sequence_maxsz 0 371 #define decode_sequence_maxsz 0 372 #endif /* CONFIG_NFS_V4_1 */ 373 374 #define NFS4_enc_compound_sz (1024) /* XXX: large enough? */ 375 #define NFS4_dec_compound_sz (1024) /* XXX: large enough? */ 376 #define NFS4_enc_read_sz (compound_encode_hdr_maxsz + \ 377 encode_sequence_maxsz + \ 378 encode_putfh_maxsz + \ 379 encode_read_maxsz) 380 #define NFS4_dec_read_sz (compound_decode_hdr_maxsz + \ 381 decode_sequence_maxsz + \ 382 decode_putfh_maxsz + \ 383 decode_read_maxsz) 384 #define NFS4_enc_readlink_sz (compound_encode_hdr_maxsz + \ 385 encode_sequence_maxsz + \ 386 encode_putfh_maxsz + \ 387 encode_readlink_maxsz) 388 #define NFS4_dec_readlink_sz (compound_decode_hdr_maxsz + \ 389 decode_sequence_maxsz + \ 390 decode_putfh_maxsz + \ 391 decode_readlink_maxsz) 392 #define NFS4_enc_readdir_sz (compound_encode_hdr_maxsz + \ 393 encode_sequence_maxsz + \ 394 encode_putfh_maxsz + \ 395 encode_readdir_maxsz) 396 #define NFS4_dec_readdir_sz (compound_decode_hdr_maxsz + \ 397 decode_sequence_maxsz + \ 398 decode_putfh_maxsz + \ 399 decode_readdir_maxsz) 400 #define NFS4_enc_write_sz (compound_encode_hdr_maxsz + \ 401 encode_sequence_maxsz + \ 402 encode_putfh_maxsz + \ 403 encode_write_maxsz + \ 404 encode_getattr_maxsz) 405 #define NFS4_dec_write_sz (compound_decode_hdr_maxsz + \ 406 decode_sequence_maxsz + \ 407 decode_putfh_maxsz + \ 408 decode_write_maxsz + \ 409 decode_getattr_maxsz) 410 #define NFS4_enc_commit_sz (compound_encode_hdr_maxsz + \ 411 encode_sequence_maxsz + \ 412 encode_putfh_maxsz + \ 413 encode_commit_maxsz + \ 414 encode_getattr_maxsz) 415 #define NFS4_dec_commit_sz (compound_decode_hdr_maxsz + \ 416 decode_sequence_maxsz + \ 417 decode_putfh_maxsz + \ 418 decode_commit_maxsz + \ 419 decode_getattr_maxsz) 420 #define NFS4_enc_open_sz (compound_encode_hdr_maxsz + \ 421 encode_sequence_maxsz + \ 422 encode_putfh_maxsz + \ 423 encode_savefh_maxsz + \ 424 encode_open_maxsz + \ 425 encode_getfh_maxsz + \ 426 encode_getattr_maxsz + \ 427 encode_restorefh_maxsz + \ 428 encode_getattr_maxsz) 429 #define NFS4_dec_open_sz (compound_decode_hdr_maxsz + \ 430 decode_sequence_maxsz + \ 431 decode_putfh_maxsz + \ 432 decode_savefh_maxsz + \ 433 decode_open_maxsz + \ 434 decode_getfh_maxsz + \ 435 decode_getattr_maxsz + \ 436 decode_restorefh_maxsz + \ 437 decode_getattr_maxsz) 438 #define NFS4_enc_open_confirm_sz \ 439 (compound_encode_hdr_maxsz + \ 440 encode_putfh_maxsz + \ 441 encode_open_confirm_maxsz) 442 #define NFS4_dec_open_confirm_sz \ 443 (compound_decode_hdr_maxsz + \ 444 decode_putfh_maxsz + \ 445 decode_open_confirm_maxsz) 446 #define NFS4_enc_open_noattr_sz (compound_encode_hdr_maxsz + \ 447 encode_sequence_maxsz + \ 448 encode_putfh_maxsz + \ 449 encode_open_maxsz + \ 450 encode_getattr_maxsz) 451 #define NFS4_dec_open_noattr_sz (compound_decode_hdr_maxsz + \ 452 decode_sequence_maxsz + \ 453 decode_putfh_maxsz + \ 454 decode_open_maxsz + \ 455 decode_getattr_maxsz) 456 #define NFS4_enc_open_downgrade_sz \ 457 (compound_encode_hdr_maxsz + \ 458 encode_sequence_maxsz + \ 459 encode_putfh_maxsz + \ 460 encode_open_downgrade_maxsz + \ 461 encode_getattr_maxsz) 462 #define NFS4_dec_open_downgrade_sz \ 463 (compound_decode_hdr_maxsz + \ 464 decode_sequence_maxsz + \ 465 decode_putfh_maxsz + \ 466 decode_open_downgrade_maxsz + \ 467 decode_getattr_maxsz) 468 #define NFS4_enc_close_sz (compound_encode_hdr_maxsz + \ 469 encode_sequence_maxsz + \ 470 encode_putfh_maxsz + \ 471 encode_close_maxsz + \ 472 encode_getattr_maxsz) 473 #define NFS4_dec_close_sz (compound_decode_hdr_maxsz + \ 474 decode_sequence_maxsz + \ 475 decode_putfh_maxsz + \ 476 decode_close_maxsz + \ 477 decode_getattr_maxsz) 478 #define NFS4_enc_setattr_sz (compound_encode_hdr_maxsz + \ 479 encode_sequence_maxsz + \ 480 encode_putfh_maxsz + \ 481 encode_setattr_maxsz + \ 482 encode_getattr_maxsz) 483 #define NFS4_dec_setattr_sz (compound_decode_hdr_maxsz + \ 484 decode_sequence_maxsz + \ 485 decode_putfh_maxsz + \ 486 decode_setattr_maxsz + \ 487 decode_getattr_maxsz) 488 #define NFS4_enc_fsinfo_sz (compound_encode_hdr_maxsz + \ 489 encode_sequence_maxsz + \ 490 encode_putfh_maxsz + \ 491 encode_fsinfo_maxsz) 492 #define NFS4_dec_fsinfo_sz (compound_decode_hdr_maxsz + \ 493 decode_sequence_maxsz + \ 494 decode_putfh_maxsz + \ 495 decode_fsinfo_maxsz) 496 #define NFS4_enc_renew_sz (compound_encode_hdr_maxsz + \ 497 encode_renew_maxsz) 498 #define NFS4_dec_renew_sz (compound_decode_hdr_maxsz + \ 499 decode_renew_maxsz) 500 #define NFS4_enc_setclientid_sz (compound_encode_hdr_maxsz + \ 501 encode_setclientid_maxsz) 502 #define NFS4_dec_setclientid_sz (compound_decode_hdr_maxsz + \ 503 decode_setclientid_maxsz) 504 #define NFS4_enc_setclientid_confirm_sz \ 505 (compound_encode_hdr_maxsz + \ 506 encode_setclientid_confirm_maxsz + \ 507 encode_putrootfh_maxsz + \ 508 encode_fsinfo_maxsz) 509 #define NFS4_dec_setclientid_confirm_sz \ 510 (compound_decode_hdr_maxsz + \ 511 decode_setclientid_confirm_maxsz + \ 512 decode_putrootfh_maxsz + \ 513 decode_fsinfo_maxsz) 514 #define NFS4_enc_lock_sz (compound_encode_hdr_maxsz + \ 515 encode_sequence_maxsz + \ 516 encode_putfh_maxsz + \ 517 encode_lock_maxsz) 518 #define NFS4_dec_lock_sz (compound_decode_hdr_maxsz + \ 519 decode_sequence_maxsz + \ 520 decode_putfh_maxsz + \ 521 decode_lock_maxsz) 522 #define NFS4_enc_lockt_sz (compound_encode_hdr_maxsz + \ 523 encode_sequence_maxsz + \ 524 encode_putfh_maxsz + \ 525 encode_lockt_maxsz) 526 #define NFS4_dec_lockt_sz (compound_decode_hdr_maxsz + \ 527 decode_sequence_maxsz + \ 528 decode_putfh_maxsz + \ 529 decode_lockt_maxsz) 530 #define NFS4_enc_locku_sz (compound_encode_hdr_maxsz + \ 531 encode_sequence_maxsz + \ 532 encode_putfh_maxsz + \ 533 encode_locku_maxsz) 534 #define NFS4_dec_locku_sz (compound_decode_hdr_maxsz + \ 535 decode_sequence_maxsz + \ 536 decode_putfh_maxsz + \ 537 decode_locku_maxsz) 538 #define NFS4_enc_release_lockowner_sz \ 539 (compound_encode_hdr_maxsz + \ 540 encode_lockowner_maxsz) 541 #define NFS4_dec_release_lockowner_sz \ 542 (compound_decode_hdr_maxsz + \ 543 decode_lockowner_maxsz) 544 #define NFS4_enc_access_sz (compound_encode_hdr_maxsz + \ 545 encode_sequence_maxsz + \ 546 encode_putfh_maxsz + \ 547 encode_access_maxsz + \ 548 encode_getattr_maxsz) 549 #define NFS4_dec_access_sz (compound_decode_hdr_maxsz + \ 550 decode_sequence_maxsz + \ 551 decode_putfh_maxsz + \ 552 decode_access_maxsz + \ 553 decode_getattr_maxsz) 554 #define NFS4_enc_getattr_sz (compound_encode_hdr_maxsz + \ 555 encode_sequence_maxsz + \ 556 encode_putfh_maxsz + \ 557 encode_getattr_maxsz) 558 #define NFS4_dec_getattr_sz (compound_decode_hdr_maxsz + \ 559 decode_sequence_maxsz + \ 560 decode_putfh_maxsz + \ 561 decode_getattr_maxsz) 562 #define NFS4_enc_lookup_sz (compound_encode_hdr_maxsz + \ 563 encode_sequence_maxsz + \ 564 encode_putfh_maxsz + \ 565 encode_lookup_maxsz + \ 566 encode_getattr_maxsz + \ 567 encode_getfh_maxsz) 568 #define NFS4_dec_lookup_sz (compound_decode_hdr_maxsz + \ 569 decode_sequence_maxsz + \ 570 decode_putfh_maxsz + \ 571 decode_lookup_maxsz + \ 572 decode_getattr_maxsz + \ 573 decode_getfh_maxsz) 574 #define NFS4_enc_lookup_root_sz (compound_encode_hdr_maxsz + \ 575 encode_sequence_maxsz + \ 576 encode_putrootfh_maxsz + \ 577 encode_getattr_maxsz + \ 578 encode_getfh_maxsz) 579 #define NFS4_dec_lookup_root_sz (compound_decode_hdr_maxsz + \ 580 decode_sequence_maxsz + \ 581 decode_putrootfh_maxsz + \ 582 decode_getattr_maxsz + \ 583 decode_getfh_maxsz) 584 #define NFS4_enc_remove_sz (compound_encode_hdr_maxsz + \ 585 encode_sequence_maxsz + \ 586 encode_putfh_maxsz + \ 587 encode_remove_maxsz + \ 588 encode_getattr_maxsz) 589 #define NFS4_dec_remove_sz (compound_decode_hdr_maxsz + \ 590 decode_sequence_maxsz + \ 591 decode_putfh_maxsz + \ 592 decode_remove_maxsz + \ 593 decode_getattr_maxsz) 594 #define NFS4_enc_rename_sz (compound_encode_hdr_maxsz + \ 595 encode_sequence_maxsz + \ 596 encode_putfh_maxsz + \ 597 encode_savefh_maxsz + \ 598 encode_putfh_maxsz + \ 599 encode_rename_maxsz + \ 600 encode_getattr_maxsz + \ 601 encode_restorefh_maxsz + \ 602 encode_getattr_maxsz) 603 #define NFS4_dec_rename_sz (compound_decode_hdr_maxsz + \ 604 decode_sequence_maxsz + \ 605 decode_putfh_maxsz + \ 606 decode_savefh_maxsz + \ 607 decode_putfh_maxsz + \ 608 decode_rename_maxsz + \ 609 decode_getattr_maxsz + \ 610 decode_restorefh_maxsz + \ 611 decode_getattr_maxsz) 612 #define NFS4_enc_link_sz (compound_encode_hdr_maxsz + \ 613 encode_sequence_maxsz + \ 614 encode_putfh_maxsz + \ 615 encode_savefh_maxsz + \ 616 encode_putfh_maxsz + \ 617 encode_link_maxsz + \ 618 decode_getattr_maxsz + \ 619 encode_restorefh_maxsz + \ 620 decode_getattr_maxsz) 621 #define NFS4_dec_link_sz (compound_decode_hdr_maxsz + \ 622 decode_sequence_maxsz + \ 623 decode_putfh_maxsz + \ 624 decode_savefh_maxsz + \ 625 decode_putfh_maxsz + \ 626 decode_link_maxsz + \ 627 decode_getattr_maxsz + \ 628 decode_restorefh_maxsz + \ 629 decode_getattr_maxsz) 630 #define NFS4_enc_symlink_sz (compound_encode_hdr_maxsz + \ 631 encode_sequence_maxsz + \ 632 encode_putfh_maxsz + \ 633 encode_symlink_maxsz + \ 634 encode_getattr_maxsz + \ 635 encode_getfh_maxsz) 636 #define NFS4_dec_symlink_sz (compound_decode_hdr_maxsz + \ 637 decode_sequence_maxsz + \ 638 decode_putfh_maxsz + \ 639 decode_symlink_maxsz + \ 640 decode_getattr_maxsz + \ 641 decode_getfh_maxsz) 642 #define NFS4_enc_create_sz (compound_encode_hdr_maxsz + \ 643 encode_sequence_maxsz + \ 644 encode_putfh_maxsz + \ 645 encode_savefh_maxsz + \ 646 encode_create_maxsz + \ 647 encode_getfh_maxsz + \ 648 encode_getattr_maxsz + \ 649 encode_restorefh_maxsz + \ 650 encode_getattr_maxsz) 651 #define NFS4_dec_create_sz (compound_decode_hdr_maxsz + \ 652 decode_sequence_maxsz + \ 653 decode_putfh_maxsz + \ 654 decode_savefh_maxsz + \ 655 decode_create_maxsz + \ 656 decode_getfh_maxsz + \ 657 decode_getattr_maxsz + \ 658 decode_restorefh_maxsz + \ 659 decode_getattr_maxsz) 660 #define NFS4_enc_pathconf_sz (compound_encode_hdr_maxsz + \ 661 encode_sequence_maxsz + \ 662 encode_putfh_maxsz + \ 663 encode_getattr_maxsz) 664 #define NFS4_dec_pathconf_sz (compound_decode_hdr_maxsz + \ 665 decode_sequence_maxsz + \ 666 decode_putfh_maxsz + \ 667 decode_getattr_maxsz) 668 #define NFS4_enc_statfs_sz (compound_encode_hdr_maxsz + \ 669 encode_sequence_maxsz + \ 670 encode_putfh_maxsz + \ 671 encode_statfs_maxsz) 672 #define NFS4_dec_statfs_sz (compound_decode_hdr_maxsz + \ 673 decode_sequence_maxsz + \ 674 decode_putfh_maxsz + \ 675 decode_statfs_maxsz) 676 #define NFS4_enc_server_caps_sz (compound_encode_hdr_maxsz + \ 677 encode_sequence_maxsz + \ 678 encode_putfh_maxsz + \ 679 encode_getattr_maxsz) 680 #define NFS4_dec_server_caps_sz (compound_decode_hdr_maxsz + \ 681 decode_sequence_maxsz + \ 682 decode_putfh_maxsz + \ 683 decode_getattr_maxsz) 684 #define NFS4_enc_delegreturn_sz (compound_encode_hdr_maxsz + \ 685 encode_sequence_maxsz + \ 686 encode_putfh_maxsz + \ 687 encode_delegreturn_maxsz + \ 688 encode_getattr_maxsz) 689 #define NFS4_dec_delegreturn_sz (compound_decode_hdr_maxsz + \ 690 decode_sequence_maxsz + \ 691 decode_delegreturn_maxsz + \ 692 decode_getattr_maxsz) 693 #define NFS4_enc_getacl_sz (compound_encode_hdr_maxsz + \ 694 encode_sequence_maxsz + \ 695 encode_putfh_maxsz + \ 696 encode_getacl_maxsz) 697 #define NFS4_dec_getacl_sz (compound_decode_hdr_maxsz + \ 698 decode_sequence_maxsz + \ 699 decode_putfh_maxsz + \ 700 decode_getacl_maxsz) 701 #define NFS4_enc_setacl_sz (compound_encode_hdr_maxsz + \ 702 encode_sequence_maxsz + \ 703 encode_putfh_maxsz + \ 704 encode_setacl_maxsz) 705 #define NFS4_dec_setacl_sz (compound_decode_hdr_maxsz + \ 706 decode_sequence_maxsz + \ 707 decode_putfh_maxsz + \ 708 decode_setacl_maxsz) 709 #define NFS4_enc_fs_locations_sz \ 710 (compound_encode_hdr_maxsz + \ 711 encode_sequence_maxsz + \ 712 encode_putfh_maxsz + \ 713 encode_lookup_maxsz + \ 714 encode_fs_locations_maxsz) 715 #define NFS4_dec_fs_locations_sz \ 716 (compound_decode_hdr_maxsz + \ 717 decode_sequence_maxsz + \ 718 decode_putfh_maxsz + \ 719 decode_lookup_maxsz + \ 720 decode_fs_locations_maxsz) 721 #define NFS4_enc_secinfo_sz (compound_encode_hdr_maxsz + \ 722 encode_sequence_maxsz + \ 723 encode_putfh_maxsz + \ 724 encode_secinfo_maxsz) 725 #define NFS4_dec_secinfo_sz (compound_decode_hdr_maxsz + \ 726 decode_sequence_maxsz + \ 727 decode_putfh_maxsz + \ 728 decode_secinfo_maxsz) 729 #if defined(CONFIG_NFS_V4_1) 730 #define NFS4_enc_exchange_id_sz \ 731 (compound_encode_hdr_maxsz + \ 732 encode_exchange_id_maxsz) 733 #define NFS4_dec_exchange_id_sz \ 734 (compound_decode_hdr_maxsz + \ 735 decode_exchange_id_maxsz) 736 #define NFS4_enc_create_session_sz \ 737 (compound_encode_hdr_maxsz + \ 738 encode_create_session_maxsz) 739 #define NFS4_dec_create_session_sz \ 740 (compound_decode_hdr_maxsz + \ 741 decode_create_session_maxsz) 742 #define NFS4_enc_destroy_session_sz (compound_encode_hdr_maxsz + \ 743 encode_destroy_session_maxsz) 744 #define NFS4_dec_destroy_session_sz (compound_decode_hdr_maxsz + \ 745 decode_destroy_session_maxsz) 746 #define NFS4_enc_sequence_sz \ 747 (compound_decode_hdr_maxsz + \ 748 encode_sequence_maxsz) 749 #define NFS4_dec_sequence_sz \ 750 (compound_decode_hdr_maxsz + \ 751 decode_sequence_maxsz) 752 #define NFS4_enc_get_lease_time_sz (compound_encode_hdr_maxsz + \ 753 encode_sequence_maxsz + \ 754 encode_putrootfh_maxsz + \ 755 encode_fsinfo_maxsz) 756 #define NFS4_dec_get_lease_time_sz (compound_decode_hdr_maxsz + \ 757 decode_sequence_maxsz + \ 758 decode_putrootfh_maxsz + \ 759 decode_fsinfo_maxsz) 760 #define NFS4_enc_reclaim_complete_sz (compound_encode_hdr_maxsz + \ 761 encode_sequence_maxsz + \ 762 encode_reclaim_complete_maxsz) 763 #define NFS4_dec_reclaim_complete_sz (compound_decode_hdr_maxsz + \ 764 decode_sequence_maxsz + \ 765 decode_reclaim_complete_maxsz) 766 #define NFS4_enc_getdevicelist_sz (compound_encode_hdr_maxsz + \ 767 encode_sequence_maxsz + \ 768 encode_putfh_maxsz + \ 769 encode_getdevicelist_maxsz) 770 #define NFS4_dec_getdevicelist_sz (compound_decode_hdr_maxsz + \ 771 decode_sequence_maxsz + \ 772 decode_putfh_maxsz + \ 773 decode_getdevicelist_maxsz) 774 #define NFS4_enc_getdeviceinfo_sz (compound_encode_hdr_maxsz + \ 775 encode_sequence_maxsz +\ 776 encode_getdeviceinfo_maxsz) 777 #define NFS4_dec_getdeviceinfo_sz (compound_decode_hdr_maxsz + \ 778 decode_sequence_maxsz + \ 779 decode_getdeviceinfo_maxsz) 780 #define NFS4_enc_layoutget_sz (compound_encode_hdr_maxsz + \ 781 encode_sequence_maxsz + \ 782 encode_putfh_maxsz + \ 783 encode_layoutget_maxsz) 784 #define NFS4_dec_layoutget_sz (compound_decode_hdr_maxsz + \ 785 decode_sequence_maxsz + \ 786 decode_putfh_maxsz + \ 787 decode_layoutget_maxsz) 788 #define NFS4_enc_layoutcommit_sz (compound_encode_hdr_maxsz + \ 789 encode_sequence_maxsz +\ 790 encode_putfh_maxsz + \ 791 encode_layoutcommit_maxsz + \ 792 encode_getattr_maxsz) 793 #define NFS4_dec_layoutcommit_sz (compound_decode_hdr_maxsz + \ 794 decode_sequence_maxsz + \ 795 decode_putfh_maxsz + \ 796 decode_layoutcommit_maxsz + \ 797 decode_getattr_maxsz) 798 #define NFS4_enc_layoutreturn_sz (compound_encode_hdr_maxsz + \ 799 encode_sequence_maxsz + \ 800 encode_putfh_maxsz + \ 801 encode_layoutreturn_maxsz) 802 #define NFS4_dec_layoutreturn_sz (compound_decode_hdr_maxsz + \ 803 decode_sequence_maxsz + \ 804 decode_putfh_maxsz + \ 805 decode_layoutreturn_maxsz) 806 #define NFS4_enc_secinfo_no_name_sz (compound_encode_hdr_maxsz + \ 807 encode_sequence_maxsz + \ 808 encode_putrootfh_maxsz +\ 809 encode_secinfo_no_name_maxsz) 810 #define NFS4_dec_secinfo_no_name_sz (compound_decode_hdr_maxsz + \ 811 decode_sequence_maxsz + \ 812 decode_putrootfh_maxsz + \ 813 decode_secinfo_no_name_maxsz) 814 #define NFS4_enc_test_stateid_sz (compound_encode_hdr_maxsz + \ 815 encode_sequence_maxsz + \ 816 encode_test_stateid_maxsz) 817 #define NFS4_dec_test_stateid_sz (compound_decode_hdr_maxsz + \ 818 decode_sequence_maxsz + \ 819 decode_test_stateid_maxsz) 820 #define NFS4_enc_free_stateid_sz (compound_encode_hdr_maxsz + \ 821 encode_sequence_maxsz + \ 822 encode_free_stateid_maxsz) 823 #define NFS4_dec_free_stateid_sz (compound_decode_hdr_maxsz + \ 824 decode_sequence_maxsz + \ 825 decode_free_stateid_maxsz) 826 827 const u32 nfs41_maxwrite_overhead = ((RPC_MAX_HEADER_WITH_AUTH + 828 compound_encode_hdr_maxsz + 829 encode_sequence_maxsz + 830 encode_putfh_maxsz + 831 encode_getattr_maxsz) * 832 XDR_UNIT); 833 834 const u32 nfs41_maxread_overhead = ((RPC_MAX_HEADER_WITH_AUTH + 835 compound_decode_hdr_maxsz + 836 decode_sequence_maxsz + 837 decode_putfh_maxsz) * 838 XDR_UNIT); 839 #endif /* CONFIG_NFS_V4_1 */ 840 841 static const umode_t nfs_type2fmt[] = { 842 [NF4BAD] = 0, 843 [NF4REG] = S_IFREG, 844 [NF4DIR] = S_IFDIR, 845 [NF4BLK] = S_IFBLK, 846 [NF4CHR] = S_IFCHR, 847 [NF4LNK] = S_IFLNK, 848 [NF4SOCK] = S_IFSOCK, 849 [NF4FIFO] = S_IFIFO, 850 [NF4ATTRDIR] = 0, 851 [NF4NAMEDATTR] = 0, 852 }; 853 854 struct compound_hdr { 855 int32_t status; 856 uint32_t nops; 857 __be32 * nops_p; 858 uint32_t taglen; 859 char * tag; 860 uint32_t replen; /* expected reply words */ 861 u32 minorversion; 862 }; 863 864 static __be32 *reserve_space(struct xdr_stream *xdr, size_t nbytes) 865 { 866 __be32 *p = xdr_reserve_space(xdr, nbytes); 867 BUG_ON(!p); 868 return p; 869 } 870 871 static void encode_string(struct xdr_stream *xdr, unsigned int len, const char *str) 872 { 873 __be32 *p; 874 875 p = xdr_reserve_space(xdr, 4 + len); 876 BUG_ON(p == NULL); 877 xdr_encode_opaque(p, str, len); 878 } 879 880 static void encode_compound_hdr(struct xdr_stream *xdr, 881 struct rpc_rqst *req, 882 struct compound_hdr *hdr) 883 { 884 __be32 *p; 885 struct rpc_auth *auth = req->rq_cred->cr_auth; 886 887 /* initialize running count of expected bytes in reply. 888 * NOTE: the replied tag SHOULD be the same is the one sent, 889 * but this is not required as a MUST for the server to do so. */ 890 hdr->replen = RPC_REPHDRSIZE + auth->au_rslack + 3 + hdr->taglen; 891 892 dprintk("encode_compound: tag=%.*s\n", (int)hdr->taglen, hdr->tag); 893 BUG_ON(hdr->taglen > NFS4_MAXTAGLEN); 894 p = reserve_space(xdr, 4 + hdr->taglen + 8); 895 p = xdr_encode_opaque(p, hdr->tag, hdr->taglen); 896 *p++ = cpu_to_be32(hdr->minorversion); 897 hdr->nops_p = p; 898 *p = cpu_to_be32(hdr->nops); 899 } 900 901 static void encode_nops(struct compound_hdr *hdr) 902 { 903 BUG_ON(hdr->nops > NFS4_MAX_OPS); 904 *hdr->nops_p = htonl(hdr->nops); 905 } 906 907 static void encode_nfs4_verifier(struct xdr_stream *xdr, const nfs4_verifier *verf) 908 { 909 __be32 *p; 910 911 p = xdr_reserve_space(xdr, NFS4_VERIFIER_SIZE); 912 BUG_ON(p == NULL); 913 xdr_encode_opaque_fixed(p, verf->data, NFS4_VERIFIER_SIZE); 914 } 915 916 static void encode_attrs(struct xdr_stream *xdr, const struct iattr *iap, const struct nfs_server *server) 917 { 918 char owner_name[IDMAP_NAMESZ]; 919 char owner_group[IDMAP_NAMESZ]; 920 int owner_namelen = 0; 921 int owner_grouplen = 0; 922 __be32 *p; 923 __be32 *q; 924 int len; 925 uint32_t bmval0 = 0; 926 uint32_t bmval1 = 0; 927 928 /* 929 * We reserve enough space to write the entire attribute buffer at once. 930 * In the worst-case, this would be 931 * 12(bitmap) + 4(attrlen) + 8(size) + 4(mode) + 4(atime) + 4(mtime) 932 * = 36 bytes, plus any contribution from variable-length fields 933 * such as owner/group. 934 */ 935 len = 16; 936 937 /* Sigh */ 938 if (iap->ia_valid & ATTR_SIZE) 939 len += 8; 940 if (iap->ia_valid & ATTR_MODE) 941 len += 4; 942 if (iap->ia_valid & ATTR_UID) { 943 owner_namelen = nfs_map_uid_to_name(server, iap->ia_uid, owner_name, IDMAP_NAMESZ); 944 if (owner_namelen < 0) { 945 dprintk("nfs: couldn't resolve uid %d to string\n", 946 iap->ia_uid); 947 /* XXX */ 948 strcpy(owner_name, "nobody"); 949 owner_namelen = sizeof("nobody") - 1; 950 /* goto out; */ 951 } 952 len += 4 + (XDR_QUADLEN(owner_namelen) << 2); 953 } 954 if (iap->ia_valid & ATTR_GID) { 955 owner_grouplen = nfs_map_gid_to_group(server, iap->ia_gid, owner_group, IDMAP_NAMESZ); 956 if (owner_grouplen < 0) { 957 dprintk("nfs: couldn't resolve gid %d to string\n", 958 iap->ia_gid); 959 strcpy(owner_group, "nobody"); 960 owner_grouplen = sizeof("nobody") - 1; 961 /* goto out; */ 962 } 963 len += 4 + (XDR_QUADLEN(owner_grouplen) << 2); 964 } 965 if (iap->ia_valid & ATTR_ATIME_SET) 966 len += 16; 967 else if (iap->ia_valid & ATTR_ATIME) 968 len += 4; 969 if (iap->ia_valid & ATTR_MTIME_SET) 970 len += 16; 971 else if (iap->ia_valid & ATTR_MTIME) 972 len += 4; 973 p = reserve_space(xdr, len); 974 975 /* 976 * We write the bitmap length now, but leave the bitmap and the attribute 977 * buffer length to be backfilled at the end of this routine. 978 */ 979 *p++ = cpu_to_be32(2); 980 q = p; 981 p += 3; 982 983 if (iap->ia_valid & ATTR_SIZE) { 984 bmval0 |= FATTR4_WORD0_SIZE; 985 p = xdr_encode_hyper(p, iap->ia_size); 986 } 987 if (iap->ia_valid & ATTR_MODE) { 988 bmval1 |= FATTR4_WORD1_MODE; 989 *p++ = cpu_to_be32(iap->ia_mode & S_IALLUGO); 990 } 991 if (iap->ia_valid & ATTR_UID) { 992 bmval1 |= FATTR4_WORD1_OWNER; 993 p = xdr_encode_opaque(p, owner_name, owner_namelen); 994 } 995 if (iap->ia_valid & ATTR_GID) { 996 bmval1 |= FATTR4_WORD1_OWNER_GROUP; 997 p = xdr_encode_opaque(p, owner_group, owner_grouplen); 998 } 999 if (iap->ia_valid & ATTR_ATIME_SET) { 1000 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET; 1001 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME); 1002 *p++ = cpu_to_be32(0); 1003 *p++ = cpu_to_be32(iap->ia_atime.tv_sec); 1004 *p++ = cpu_to_be32(iap->ia_atime.tv_nsec); 1005 } 1006 else if (iap->ia_valid & ATTR_ATIME) { 1007 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET; 1008 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME); 1009 } 1010 if (iap->ia_valid & ATTR_MTIME_SET) { 1011 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET; 1012 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME); 1013 *p++ = cpu_to_be32(0); 1014 *p++ = cpu_to_be32(iap->ia_mtime.tv_sec); 1015 *p++ = cpu_to_be32(iap->ia_mtime.tv_nsec); 1016 } 1017 else if (iap->ia_valid & ATTR_MTIME) { 1018 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET; 1019 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME); 1020 } 1021 1022 /* 1023 * Now we backfill the bitmap and the attribute buffer length. 1024 */ 1025 if (len != ((char *)p - (char *)q) + 4) { 1026 printk(KERN_ERR "nfs: Attr length error, %u != %Zu\n", 1027 len, ((char *)p - (char *)q) + 4); 1028 BUG(); 1029 } 1030 len = (char *)p - (char *)q - 12; 1031 *q++ = htonl(bmval0); 1032 *q++ = htonl(bmval1); 1033 *q = htonl(len); 1034 1035 /* out: */ 1036 } 1037 1038 static void encode_access(struct xdr_stream *xdr, u32 access, struct compound_hdr *hdr) 1039 { 1040 __be32 *p; 1041 1042 p = reserve_space(xdr, 8); 1043 *p++ = cpu_to_be32(OP_ACCESS); 1044 *p = cpu_to_be32(access); 1045 hdr->nops++; 1046 hdr->replen += decode_access_maxsz; 1047 } 1048 1049 static void encode_close(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr) 1050 { 1051 __be32 *p; 1052 1053 p = reserve_space(xdr, 8+NFS4_STATEID_SIZE); 1054 *p++ = cpu_to_be32(OP_CLOSE); 1055 *p++ = cpu_to_be32(arg->seqid->sequence->counter); 1056 xdr_encode_opaque_fixed(p, arg->stateid->data, NFS4_STATEID_SIZE); 1057 hdr->nops++; 1058 hdr->replen += decode_close_maxsz; 1059 } 1060 1061 static void encode_commit(struct xdr_stream *xdr, const struct nfs_writeargs *args, struct compound_hdr *hdr) 1062 { 1063 __be32 *p; 1064 1065 p = reserve_space(xdr, 16); 1066 *p++ = cpu_to_be32(OP_COMMIT); 1067 p = xdr_encode_hyper(p, args->offset); 1068 *p = cpu_to_be32(args->count); 1069 hdr->nops++; 1070 hdr->replen += decode_commit_maxsz; 1071 } 1072 1073 static void encode_create(struct xdr_stream *xdr, const struct nfs4_create_arg *create, struct compound_hdr *hdr) 1074 { 1075 __be32 *p; 1076 1077 p = reserve_space(xdr, 8); 1078 *p++ = cpu_to_be32(OP_CREATE); 1079 *p = cpu_to_be32(create->ftype); 1080 1081 switch (create->ftype) { 1082 case NF4LNK: 1083 p = reserve_space(xdr, 4); 1084 *p = cpu_to_be32(create->u.symlink.len); 1085 xdr_write_pages(xdr, create->u.symlink.pages, 0, create->u.symlink.len); 1086 break; 1087 1088 case NF4BLK: case NF4CHR: 1089 p = reserve_space(xdr, 8); 1090 *p++ = cpu_to_be32(create->u.device.specdata1); 1091 *p = cpu_to_be32(create->u.device.specdata2); 1092 break; 1093 1094 default: 1095 break; 1096 } 1097 1098 encode_string(xdr, create->name->len, create->name->name); 1099 hdr->nops++; 1100 hdr->replen += decode_create_maxsz; 1101 1102 encode_attrs(xdr, create->attrs, create->server); 1103 } 1104 1105 static void encode_getattr_one(struct xdr_stream *xdr, uint32_t bitmap, struct compound_hdr *hdr) 1106 { 1107 __be32 *p; 1108 1109 p = reserve_space(xdr, 12); 1110 *p++ = cpu_to_be32(OP_GETATTR); 1111 *p++ = cpu_to_be32(1); 1112 *p = cpu_to_be32(bitmap); 1113 hdr->nops++; 1114 hdr->replen += decode_getattr_maxsz; 1115 } 1116 1117 static void encode_getattr_two(struct xdr_stream *xdr, uint32_t bm0, uint32_t bm1, struct compound_hdr *hdr) 1118 { 1119 __be32 *p; 1120 1121 p = reserve_space(xdr, 16); 1122 *p++ = cpu_to_be32(OP_GETATTR); 1123 *p++ = cpu_to_be32(2); 1124 *p++ = cpu_to_be32(bm0); 1125 *p = cpu_to_be32(bm1); 1126 hdr->nops++; 1127 hdr->replen += decode_getattr_maxsz; 1128 } 1129 1130 static void 1131 encode_getattr_three(struct xdr_stream *xdr, 1132 uint32_t bm0, uint32_t bm1, uint32_t bm2, 1133 struct compound_hdr *hdr) 1134 { 1135 __be32 *p; 1136 1137 p = reserve_space(xdr, 4); 1138 *p = cpu_to_be32(OP_GETATTR); 1139 if (bm2) { 1140 p = reserve_space(xdr, 16); 1141 *p++ = cpu_to_be32(3); 1142 *p++ = cpu_to_be32(bm0); 1143 *p++ = cpu_to_be32(bm1); 1144 *p = cpu_to_be32(bm2); 1145 } else if (bm1) { 1146 p = reserve_space(xdr, 12); 1147 *p++ = cpu_to_be32(2); 1148 *p++ = cpu_to_be32(bm0); 1149 *p = cpu_to_be32(bm1); 1150 } else { 1151 p = reserve_space(xdr, 8); 1152 *p++ = cpu_to_be32(1); 1153 *p = cpu_to_be32(bm0); 1154 } 1155 hdr->nops++; 1156 hdr->replen += decode_getattr_maxsz; 1157 } 1158 1159 static void encode_getfattr(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr) 1160 { 1161 encode_getattr_two(xdr, bitmask[0] & nfs4_fattr_bitmap[0], 1162 bitmask[1] & nfs4_fattr_bitmap[1], hdr); 1163 } 1164 1165 static void encode_fsinfo(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr) 1166 { 1167 encode_getattr_three(xdr, 1168 bitmask[0] & nfs4_fsinfo_bitmap[0], 1169 bitmask[1] & nfs4_fsinfo_bitmap[1], 1170 bitmask[2] & nfs4_fsinfo_bitmap[2], 1171 hdr); 1172 } 1173 1174 static void encode_fs_locations(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr) 1175 { 1176 encode_getattr_two(xdr, bitmask[0] & nfs4_fs_locations_bitmap[0], 1177 bitmask[1] & nfs4_fs_locations_bitmap[1], hdr); 1178 } 1179 1180 static void encode_getfh(struct xdr_stream *xdr, struct compound_hdr *hdr) 1181 { 1182 __be32 *p; 1183 1184 p = reserve_space(xdr, 4); 1185 *p = cpu_to_be32(OP_GETFH); 1186 hdr->nops++; 1187 hdr->replen += decode_getfh_maxsz; 1188 } 1189 1190 static void encode_link(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr) 1191 { 1192 __be32 *p; 1193 1194 p = reserve_space(xdr, 8 + name->len); 1195 *p++ = cpu_to_be32(OP_LINK); 1196 xdr_encode_opaque(p, name->name, name->len); 1197 hdr->nops++; 1198 hdr->replen += decode_link_maxsz; 1199 } 1200 1201 static inline int nfs4_lock_type(struct file_lock *fl, int block) 1202 { 1203 if ((fl->fl_type & (F_RDLCK|F_WRLCK|F_UNLCK)) == F_RDLCK) 1204 return block ? NFS4_READW_LT : NFS4_READ_LT; 1205 return block ? NFS4_WRITEW_LT : NFS4_WRITE_LT; 1206 } 1207 1208 static inline uint64_t nfs4_lock_length(struct file_lock *fl) 1209 { 1210 if (fl->fl_end == OFFSET_MAX) 1211 return ~(uint64_t)0; 1212 return fl->fl_end - fl->fl_start + 1; 1213 } 1214 1215 static void encode_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner) 1216 { 1217 __be32 *p; 1218 1219 p = reserve_space(xdr, 32); 1220 p = xdr_encode_hyper(p, lowner->clientid); 1221 *p++ = cpu_to_be32(20); 1222 p = xdr_encode_opaque_fixed(p, "lock id:", 8); 1223 *p++ = cpu_to_be32(lowner->s_dev); 1224 xdr_encode_hyper(p, lowner->id); 1225 } 1226 1227 /* 1228 * opcode,type,reclaim,offset,length,new_lock_owner = 32 1229 * open_seqid,open_stateid,lock_seqid,lock_owner.clientid, lock_owner.id = 40 1230 */ 1231 static void encode_lock(struct xdr_stream *xdr, const struct nfs_lock_args *args, struct compound_hdr *hdr) 1232 { 1233 __be32 *p; 1234 1235 p = reserve_space(xdr, 32); 1236 *p++ = cpu_to_be32(OP_LOCK); 1237 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, args->block)); 1238 *p++ = cpu_to_be32(args->reclaim); 1239 p = xdr_encode_hyper(p, args->fl->fl_start); 1240 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl)); 1241 *p = cpu_to_be32(args->new_lock_owner); 1242 if (args->new_lock_owner){ 1243 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE+4); 1244 *p++ = cpu_to_be32(args->open_seqid->sequence->counter); 1245 p = xdr_encode_opaque_fixed(p, args->open_stateid->data, NFS4_STATEID_SIZE); 1246 *p++ = cpu_to_be32(args->lock_seqid->sequence->counter); 1247 encode_lockowner(xdr, &args->lock_owner); 1248 } 1249 else { 1250 p = reserve_space(xdr, NFS4_STATEID_SIZE+4); 1251 p = xdr_encode_opaque_fixed(p, args->lock_stateid->data, NFS4_STATEID_SIZE); 1252 *p = cpu_to_be32(args->lock_seqid->sequence->counter); 1253 } 1254 hdr->nops++; 1255 hdr->replen += decode_lock_maxsz; 1256 } 1257 1258 static void encode_lockt(struct xdr_stream *xdr, const struct nfs_lockt_args *args, struct compound_hdr *hdr) 1259 { 1260 __be32 *p; 1261 1262 p = reserve_space(xdr, 24); 1263 *p++ = cpu_to_be32(OP_LOCKT); 1264 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, 0)); 1265 p = xdr_encode_hyper(p, args->fl->fl_start); 1266 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl)); 1267 encode_lockowner(xdr, &args->lock_owner); 1268 hdr->nops++; 1269 hdr->replen += decode_lockt_maxsz; 1270 } 1271 1272 static void encode_locku(struct xdr_stream *xdr, const struct nfs_locku_args *args, struct compound_hdr *hdr) 1273 { 1274 __be32 *p; 1275 1276 p = reserve_space(xdr, 12+NFS4_STATEID_SIZE+16); 1277 *p++ = cpu_to_be32(OP_LOCKU); 1278 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, 0)); 1279 *p++ = cpu_to_be32(args->seqid->sequence->counter); 1280 p = xdr_encode_opaque_fixed(p, args->stateid->data, NFS4_STATEID_SIZE); 1281 p = xdr_encode_hyper(p, args->fl->fl_start); 1282 xdr_encode_hyper(p, nfs4_lock_length(args->fl)); 1283 hdr->nops++; 1284 hdr->replen += decode_locku_maxsz; 1285 } 1286 1287 static void encode_release_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner, struct compound_hdr *hdr) 1288 { 1289 __be32 *p; 1290 1291 p = reserve_space(xdr, 4); 1292 *p = cpu_to_be32(OP_RELEASE_LOCKOWNER); 1293 encode_lockowner(xdr, lowner); 1294 hdr->nops++; 1295 hdr->replen += decode_release_lockowner_maxsz; 1296 } 1297 1298 static void encode_lookup(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr) 1299 { 1300 int len = name->len; 1301 __be32 *p; 1302 1303 p = reserve_space(xdr, 8 + len); 1304 *p++ = cpu_to_be32(OP_LOOKUP); 1305 xdr_encode_opaque(p, name->name, len); 1306 hdr->nops++; 1307 hdr->replen += decode_lookup_maxsz; 1308 } 1309 1310 static void encode_share_access(struct xdr_stream *xdr, fmode_t fmode) 1311 { 1312 __be32 *p; 1313 1314 p = reserve_space(xdr, 8); 1315 switch (fmode & (FMODE_READ|FMODE_WRITE)) { 1316 case FMODE_READ: 1317 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_READ); 1318 break; 1319 case FMODE_WRITE: 1320 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_WRITE); 1321 break; 1322 case FMODE_READ|FMODE_WRITE: 1323 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_BOTH); 1324 break; 1325 default: 1326 *p++ = cpu_to_be32(0); 1327 } 1328 *p = cpu_to_be32(0); /* for linux, share_deny = 0 always */ 1329 } 1330 1331 static inline void encode_openhdr(struct xdr_stream *xdr, const struct nfs_openargs *arg) 1332 { 1333 __be32 *p; 1334 /* 1335 * opcode 4, seqid 4, share_access 4, share_deny 4, clientid 8, ownerlen 4, 1336 * owner 4 = 32 1337 */ 1338 p = reserve_space(xdr, 8); 1339 *p++ = cpu_to_be32(OP_OPEN); 1340 *p = cpu_to_be32(arg->seqid->sequence->counter); 1341 encode_share_access(xdr, arg->fmode); 1342 p = reserve_space(xdr, 32); 1343 p = xdr_encode_hyper(p, arg->clientid); 1344 *p++ = cpu_to_be32(20); 1345 p = xdr_encode_opaque_fixed(p, "open id:", 8); 1346 *p++ = cpu_to_be32(arg->server->s_dev); 1347 xdr_encode_hyper(p, arg->id); 1348 } 1349 1350 static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_openargs *arg) 1351 { 1352 __be32 *p; 1353 struct nfs_client *clp; 1354 1355 p = reserve_space(xdr, 4); 1356 switch(arg->open_flags & O_EXCL) { 1357 case 0: 1358 *p = cpu_to_be32(NFS4_CREATE_UNCHECKED); 1359 encode_attrs(xdr, arg->u.attrs, arg->server); 1360 break; 1361 default: 1362 clp = arg->server->nfs_client; 1363 if (clp->cl_mvops->minor_version > 0) { 1364 if (nfs4_has_persistent_session(clp)) { 1365 *p = cpu_to_be32(NFS4_CREATE_GUARDED); 1366 encode_attrs(xdr, arg->u.attrs, arg->server); 1367 } else { 1368 struct iattr dummy; 1369 1370 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE4_1); 1371 encode_nfs4_verifier(xdr, &arg->u.verifier); 1372 dummy.ia_valid = 0; 1373 encode_attrs(xdr, &dummy, arg->server); 1374 } 1375 } else { 1376 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE); 1377 encode_nfs4_verifier(xdr, &arg->u.verifier); 1378 } 1379 } 1380 } 1381 1382 static void encode_opentype(struct xdr_stream *xdr, const struct nfs_openargs *arg) 1383 { 1384 __be32 *p; 1385 1386 p = reserve_space(xdr, 4); 1387 switch (arg->open_flags & O_CREAT) { 1388 case 0: 1389 *p = cpu_to_be32(NFS4_OPEN_NOCREATE); 1390 break; 1391 default: 1392 BUG_ON(arg->claim != NFS4_OPEN_CLAIM_NULL); 1393 *p = cpu_to_be32(NFS4_OPEN_CREATE); 1394 encode_createmode(xdr, arg); 1395 } 1396 } 1397 1398 static inline void encode_delegation_type(struct xdr_stream *xdr, fmode_t delegation_type) 1399 { 1400 __be32 *p; 1401 1402 p = reserve_space(xdr, 4); 1403 switch (delegation_type) { 1404 case 0: 1405 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_NONE); 1406 break; 1407 case FMODE_READ: 1408 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_READ); 1409 break; 1410 case FMODE_WRITE|FMODE_READ: 1411 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_WRITE); 1412 break; 1413 default: 1414 BUG(); 1415 } 1416 } 1417 1418 static inline void encode_claim_null(struct xdr_stream *xdr, const struct qstr *name) 1419 { 1420 __be32 *p; 1421 1422 p = reserve_space(xdr, 4); 1423 *p = cpu_to_be32(NFS4_OPEN_CLAIM_NULL); 1424 encode_string(xdr, name->len, name->name); 1425 } 1426 1427 static inline void encode_claim_previous(struct xdr_stream *xdr, fmode_t type) 1428 { 1429 __be32 *p; 1430 1431 p = reserve_space(xdr, 4); 1432 *p = cpu_to_be32(NFS4_OPEN_CLAIM_PREVIOUS); 1433 encode_delegation_type(xdr, type); 1434 } 1435 1436 static inline void encode_claim_delegate_cur(struct xdr_stream *xdr, const struct qstr *name, const nfs4_stateid *stateid) 1437 { 1438 __be32 *p; 1439 1440 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE); 1441 *p++ = cpu_to_be32(NFS4_OPEN_CLAIM_DELEGATE_CUR); 1442 xdr_encode_opaque_fixed(p, stateid->data, NFS4_STATEID_SIZE); 1443 encode_string(xdr, name->len, name->name); 1444 } 1445 1446 static void encode_open(struct xdr_stream *xdr, const struct nfs_openargs *arg, struct compound_hdr *hdr) 1447 { 1448 encode_openhdr(xdr, arg); 1449 encode_opentype(xdr, arg); 1450 switch (arg->claim) { 1451 case NFS4_OPEN_CLAIM_NULL: 1452 encode_claim_null(xdr, arg->name); 1453 break; 1454 case NFS4_OPEN_CLAIM_PREVIOUS: 1455 encode_claim_previous(xdr, arg->u.delegation_type); 1456 break; 1457 case NFS4_OPEN_CLAIM_DELEGATE_CUR: 1458 encode_claim_delegate_cur(xdr, arg->name, &arg->u.delegation); 1459 break; 1460 default: 1461 BUG(); 1462 } 1463 hdr->nops++; 1464 hdr->replen += decode_open_maxsz; 1465 } 1466 1467 static void encode_open_confirm(struct xdr_stream *xdr, const struct nfs_open_confirmargs *arg, struct compound_hdr *hdr) 1468 { 1469 __be32 *p; 1470 1471 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE+4); 1472 *p++ = cpu_to_be32(OP_OPEN_CONFIRM); 1473 p = xdr_encode_opaque_fixed(p, arg->stateid->data, NFS4_STATEID_SIZE); 1474 *p = cpu_to_be32(arg->seqid->sequence->counter); 1475 hdr->nops++; 1476 hdr->replen += decode_open_confirm_maxsz; 1477 } 1478 1479 static void encode_open_downgrade(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr) 1480 { 1481 __be32 *p; 1482 1483 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE+4); 1484 *p++ = cpu_to_be32(OP_OPEN_DOWNGRADE); 1485 p = xdr_encode_opaque_fixed(p, arg->stateid->data, NFS4_STATEID_SIZE); 1486 *p = cpu_to_be32(arg->seqid->sequence->counter); 1487 encode_share_access(xdr, arg->fmode); 1488 hdr->nops++; 1489 hdr->replen += decode_open_downgrade_maxsz; 1490 } 1491 1492 static void 1493 encode_putfh(struct xdr_stream *xdr, const struct nfs_fh *fh, struct compound_hdr *hdr) 1494 { 1495 int len = fh->size; 1496 __be32 *p; 1497 1498 p = reserve_space(xdr, 8 + len); 1499 *p++ = cpu_to_be32(OP_PUTFH); 1500 xdr_encode_opaque(p, fh->data, len); 1501 hdr->nops++; 1502 hdr->replen += decode_putfh_maxsz; 1503 } 1504 1505 static void encode_putrootfh(struct xdr_stream *xdr, struct compound_hdr *hdr) 1506 { 1507 __be32 *p; 1508 1509 p = reserve_space(xdr, 4); 1510 *p = cpu_to_be32(OP_PUTROOTFH); 1511 hdr->nops++; 1512 hdr->replen += decode_putrootfh_maxsz; 1513 } 1514 1515 static void encode_stateid(struct xdr_stream *xdr, const struct nfs_open_context *ctx, const struct nfs_lock_context *l_ctx, int zero_seqid) 1516 { 1517 nfs4_stateid stateid; 1518 __be32 *p; 1519 1520 p = reserve_space(xdr, NFS4_STATEID_SIZE); 1521 if (ctx->state != NULL) { 1522 nfs4_copy_stateid(&stateid, ctx->state, l_ctx->lockowner, l_ctx->pid); 1523 if (zero_seqid) 1524 stateid.stateid.seqid = 0; 1525 xdr_encode_opaque_fixed(p, stateid.data, NFS4_STATEID_SIZE); 1526 } else 1527 xdr_encode_opaque_fixed(p, zero_stateid.data, NFS4_STATEID_SIZE); 1528 } 1529 1530 static void encode_read(struct xdr_stream *xdr, const struct nfs_readargs *args, struct compound_hdr *hdr) 1531 { 1532 __be32 *p; 1533 1534 p = reserve_space(xdr, 4); 1535 *p = cpu_to_be32(OP_READ); 1536 1537 encode_stateid(xdr, args->context, args->lock_context, 1538 hdr->minorversion); 1539 1540 p = reserve_space(xdr, 12); 1541 p = xdr_encode_hyper(p, args->offset); 1542 *p = cpu_to_be32(args->count); 1543 hdr->nops++; 1544 hdr->replen += decode_read_maxsz; 1545 } 1546 1547 static void encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg *readdir, struct rpc_rqst *req, struct compound_hdr *hdr) 1548 { 1549 uint32_t attrs[2] = { 1550 FATTR4_WORD0_RDATTR_ERROR, 1551 FATTR4_WORD1_MOUNTED_ON_FILEID, 1552 }; 1553 uint32_t dircount = readdir->count >> 1; 1554 __be32 *p; 1555 1556 if (readdir->plus) { 1557 attrs[0] |= FATTR4_WORD0_TYPE|FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE| 1558 FATTR4_WORD0_FSID|FATTR4_WORD0_FILEHANDLE|FATTR4_WORD0_FILEID; 1559 attrs[1] |= FATTR4_WORD1_MODE|FATTR4_WORD1_NUMLINKS|FATTR4_WORD1_OWNER| 1560 FATTR4_WORD1_OWNER_GROUP|FATTR4_WORD1_RAWDEV| 1561 FATTR4_WORD1_SPACE_USED|FATTR4_WORD1_TIME_ACCESS| 1562 FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY; 1563 dircount >>= 1; 1564 } 1565 /* Use mounted_on_fileid only if the server supports it */ 1566 if (!(readdir->bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)) 1567 attrs[0] |= FATTR4_WORD0_FILEID; 1568 1569 p = reserve_space(xdr, 12+NFS4_VERIFIER_SIZE+20); 1570 *p++ = cpu_to_be32(OP_READDIR); 1571 p = xdr_encode_hyper(p, readdir->cookie); 1572 p = xdr_encode_opaque_fixed(p, readdir->verifier.data, NFS4_VERIFIER_SIZE); 1573 *p++ = cpu_to_be32(dircount); 1574 *p++ = cpu_to_be32(readdir->count); 1575 *p++ = cpu_to_be32(2); 1576 1577 *p++ = cpu_to_be32(attrs[0] & readdir->bitmask[0]); 1578 *p = cpu_to_be32(attrs[1] & readdir->bitmask[1]); 1579 hdr->nops++; 1580 hdr->replen += decode_readdir_maxsz; 1581 dprintk("%s: cookie = %Lu, verifier = %08x:%08x, bitmap = %08x:%08x\n", 1582 __func__, 1583 (unsigned long long)readdir->cookie, 1584 ((u32 *)readdir->verifier.data)[0], 1585 ((u32 *)readdir->verifier.data)[1], 1586 attrs[0] & readdir->bitmask[0], 1587 attrs[1] & readdir->bitmask[1]); 1588 } 1589 1590 static void encode_readlink(struct xdr_stream *xdr, const struct nfs4_readlink *readlink, struct rpc_rqst *req, struct compound_hdr *hdr) 1591 { 1592 __be32 *p; 1593 1594 p = reserve_space(xdr, 4); 1595 *p = cpu_to_be32(OP_READLINK); 1596 hdr->nops++; 1597 hdr->replen += decode_readlink_maxsz; 1598 } 1599 1600 static void encode_remove(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr) 1601 { 1602 __be32 *p; 1603 1604 p = reserve_space(xdr, 8 + name->len); 1605 *p++ = cpu_to_be32(OP_REMOVE); 1606 xdr_encode_opaque(p, name->name, name->len); 1607 hdr->nops++; 1608 hdr->replen += decode_remove_maxsz; 1609 } 1610 1611 static void encode_rename(struct xdr_stream *xdr, const struct qstr *oldname, const struct qstr *newname, struct compound_hdr *hdr) 1612 { 1613 __be32 *p; 1614 1615 p = reserve_space(xdr, 4); 1616 *p = cpu_to_be32(OP_RENAME); 1617 encode_string(xdr, oldname->len, oldname->name); 1618 encode_string(xdr, newname->len, newname->name); 1619 hdr->nops++; 1620 hdr->replen += decode_rename_maxsz; 1621 } 1622 1623 static void encode_renew(struct xdr_stream *xdr, const struct nfs_client *client_stateid, struct compound_hdr *hdr) 1624 { 1625 __be32 *p; 1626 1627 p = reserve_space(xdr, 12); 1628 *p++ = cpu_to_be32(OP_RENEW); 1629 xdr_encode_hyper(p, client_stateid->cl_clientid); 1630 hdr->nops++; 1631 hdr->replen += decode_renew_maxsz; 1632 } 1633 1634 static void 1635 encode_restorefh(struct xdr_stream *xdr, struct compound_hdr *hdr) 1636 { 1637 __be32 *p; 1638 1639 p = reserve_space(xdr, 4); 1640 *p = cpu_to_be32(OP_RESTOREFH); 1641 hdr->nops++; 1642 hdr->replen += decode_restorefh_maxsz; 1643 } 1644 1645 static void 1646 encode_setacl(struct xdr_stream *xdr, struct nfs_setaclargs *arg, struct compound_hdr *hdr) 1647 { 1648 __be32 *p; 1649 1650 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE); 1651 *p++ = cpu_to_be32(OP_SETATTR); 1652 xdr_encode_opaque_fixed(p, zero_stateid.data, NFS4_STATEID_SIZE); 1653 p = reserve_space(xdr, 2*4); 1654 *p++ = cpu_to_be32(1); 1655 *p = cpu_to_be32(FATTR4_WORD0_ACL); 1656 BUG_ON(arg->acl_len % 4); 1657 p = reserve_space(xdr, 4); 1658 *p = cpu_to_be32(arg->acl_len); 1659 xdr_write_pages(xdr, arg->acl_pages, arg->acl_pgbase, arg->acl_len); 1660 hdr->nops++; 1661 hdr->replen += decode_setacl_maxsz; 1662 } 1663 1664 static void 1665 encode_savefh(struct xdr_stream *xdr, struct compound_hdr *hdr) 1666 { 1667 __be32 *p; 1668 1669 p = reserve_space(xdr, 4); 1670 *p = cpu_to_be32(OP_SAVEFH); 1671 hdr->nops++; 1672 hdr->replen += decode_savefh_maxsz; 1673 } 1674 1675 static void encode_setattr(struct xdr_stream *xdr, const struct nfs_setattrargs *arg, const struct nfs_server *server, struct compound_hdr *hdr) 1676 { 1677 __be32 *p; 1678 1679 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE); 1680 *p++ = cpu_to_be32(OP_SETATTR); 1681 xdr_encode_opaque_fixed(p, arg->stateid.data, NFS4_STATEID_SIZE); 1682 hdr->nops++; 1683 hdr->replen += decode_setattr_maxsz; 1684 encode_attrs(xdr, arg->iap, server); 1685 } 1686 1687 static void encode_setclientid(struct xdr_stream *xdr, const struct nfs4_setclientid *setclientid, struct compound_hdr *hdr) 1688 { 1689 __be32 *p; 1690 1691 p = reserve_space(xdr, 4 + NFS4_VERIFIER_SIZE); 1692 *p++ = cpu_to_be32(OP_SETCLIENTID); 1693 xdr_encode_opaque_fixed(p, setclientid->sc_verifier->data, NFS4_VERIFIER_SIZE); 1694 1695 encode_string(xdr, setclientid->sc_name_len, setclientid->sc_name); 1696 p = reserve_space(xdr, 4); 1697 *p = cpu_to_be32(setclientid->sc_prog); 1698 encode_string(xdr, setclientid->sc_netid_len, setclientid->sc_netid); 1699 encode_string(xdr, setclientid->sc_uaddr_len, setclientid->sc_uaddr); 1700 p = reserve_space(xdr, 4); 1701 *p = cpu_to_be32(setclientid->sc_cb_ident); 1702 hdr->nops++; 1703 hdr->replen += decode_setclientid_maxsz; 1704 } 1705 1706 static void encode_setclientid_confirm(struct xdr_stream *xdr, const struct nfs4_setclientid_res *arg, struct compound_hdr *hdr) 1707 { 1708 __be32 *p; 1709 1710 p = reserve_space(xdr, 12 + NFS4_VERIFIER_SIZE); 1711 *p++ = cpu_to_be32(OP_SETCLIENTID_CONFIRM); 1712 p = xdr_encode_hyper(p, arg->clientid); 1713 xdr_encode_opaque_fixed(p, arg->confirm.data, NFS4_VERIFIER_SIZE); 1714 hdr->nops++; 1715 hdr->replen += decode_setclientid_confirm_maxsz; 1716 } 1717 1718 static void encode_write(struct xdr_stream *xdr, const struct nfs_writeargs *args, struct compound_hdr *hdr) 1719 { 1720 __be32 *p; 1721 1722 p = reserve_space(xdr, 4); 1723 *p = cpu_to_be32(OP_WRITE); 1724 1725 encode_stateid(xdr, args->context, args->lock_context, 1726 hdr->minorversion); 1727 1728 p = reserve_space(xdr, 16); 1729 p = xdr_encode_hyper(p, args->offset); 1730 *p++ = cpu_to_be32(args->stable); 1731 *p = cpu_to_be32(args->count); 1732 1733 xdr_write_pages(xdr, args->pages, args->pgbase, args->count); 1734 hdr->nops++; 1735 hdr->replen += decode_write_maxsz; 1736 } 1737 1738 static void encode_delegreturn(struct xdr_stream *xdr, const nfs4_stateid *stateid, struct compound_hdr *hdr) 1739 { 1740 __be32 *p; 1741 1742 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE); 1743 1744 *p++ = cpu_to_be32(OP_DELEGRETURN); 1745 xdr_encode_opaque_fixed(p, stateid->data, NFS4_STATEID_SIZE); 1746 hdr->nops++; 1747 hdr->replen += decode_delegreturn_maxsz; 1748 } 1749 1750 static void encode_secinfo(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr) 1751 { 1752 int len = name->len; 1753 __be32 *p; 1754 1755 p = reserve_space(xdr, 8 + len); 1756 *p++ = cpu_to_be32(OP_SECINFO); 1757 xdr_encode_opaque(p, name->name, len); 1758 hdr->nops++; 1759 hdr->replen += decode_secinfo_maxsz; 1760 } 1761 1762 #if defined(CONFIG_NFS_V4_1) 1763 /* NFSv4.1 operations */ 1764 static void encode_exchange_id(struct xdr_stream *xdr, 1765 struct nfs41_exchange_id_args *args, 1766 struct compound_hdr *hdr) 1767 { 1768 __be32 *p; 1769 1770 p = reserve_space(xdr, 4 + sizeof(args->verifier->data)); 1771 *p++ = cpu_to_be32(OP_EXCHANGE_ID); 1772 xdr_encode_opaque_fixed(p, args->verifier->data, sizeof(args->verifier->data)); 1773 1774 encode_string(xdr, args->id_len, args->id); 1775 1776 p = reserve_space(xdr, 12); 1777 *p++ = cpu_to_be32(args->flags); 1778 *p++ = cpu_to_be32(0); /* zero length state_protect4_a */ 1779 *p = cpu_to_be32(0); /* zero length implementation id array */ 1780 hdr->nops++; 1781 hdr->replen += decode_exchange_id_maxsz; 1782 } 1783 1784 static void encode_create_session(struct xdr_stream *xdr, 1785 struct nfs41_create_session_args *args, 1786 struct compound_hdr *hdr) 1787 { 1788 __be32 *p; 1789 char machine_name[NFS4_MAX_MACHINE_NAME_LEN]; 1790 uint32_t len; 1791 struct nfs_client *clp = args->client; 1792 u32 max_resp_sz_cached; 1793 1794 /* 1795 * Assumes OPEN is the biggest non-idempotent compound. 1796 * 2 is the verifier. 1797 */ 1798 max_resp_sz_cached = (NFS4_dec_open_sz + RPC_REPHDRSIZE + 1799 RPC_MAX_AUTH_SIZE + 2) * XDR_UNIT; 1800 1801 len = scnprintf(machine_name, sizeof(machine_name), "%s", 1802 clp->cl_ipaddr); 1803 1804 p = reserve_space(xdr, 20 + 2*28 + 20 + len + 12); 1805 *p++ = cpu_to_be32(OP_CREATE_SESSION); 1806 p = xdr_encode_hyper(p, clp->cl_clientid); 1807 *p++ = cpu_to_be32(clp->cl_seqid); /*Sequence id */ 1808 *p++ = cpu_to_be32(args->flags); /*flags */ 1809 1810 /* Fore Channel */ 1811 *p++ = cpu_to_be32(0); /* header padding size */ 1812 *p++ = cpu_to_be32(args->fc_attrs.max_rqst_sz); /* max req size */ 1813 *p++ = cpu_to_be32(args->fc_attrs.max_resp_sz); /* max resp size */ 1814 *p++ = cpu_to_be32(max_resp_sz_cached); /* Max resp sz cached */ 1815 *p++ = cpu_to_be32(args->fc_attrs.max_ops); /* max operations */ 1816 *p++ = cpu_to_be32(args->fc_attrs.max_reqs); /* max requests */ 1817 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */ 1818 1819 /* Back Channel */ 1820 *p++ = cpu_to_be32(0); /* header padding size */ 1821 *p++ = cpu_to_be32(args->bc_attrs.max_rqst_sz); /* max req size */ 1822 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz); /* max resp size */ 1823 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz_cached); /* Max resp sz cached */ 1824 *p++ = cpu_to_be32(args->bc_attrs.max_ops); /* max operations */ 1825 *p++ = cpu_to_be32(args->bc_attrs.max_reqs); /* max requests */ 1826 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */ 1827 1828 *p++ = cpu_to_be32(args->cb_program); /* cb_program */ 1829 *p++ = cpu_to_be32(1); 1830 *p++ = cpu_to_be32(RPC_AUTH_UNIX); /* auth_sys */ 1831 1832 /* authsys_parms rfc1831 */ 1833 *p++ = cpu_to_be32((u32)clp->cl_boot_time.tv_nsec); /* stamp */ 1834 p = xdr_encode_opaque(p, machine_name, len); 1835 *p++ = cpu_to_be32(0); /* UID */ 1836 *p++ = cpu_to_be32(0); /* GID */ 1837 *p = cpu_to_be32(0); /* No more gids */ 1838 hdr->nops++; 1839 hdr->replen += decode_create_session_maxsz; 1840 } 1841 1842 static void encode_destroy_session(struct xdr_stream *xdr, 1843 struct nfs4_session *session, 1844 struct compound_hdr *hdr) 1845 { 1846 __be32 *p; 1847 p = reserve_space(xdr, 4 + NFS4_MAX_SESSIONID_LEN); 1848 *p++ = cpu_to_be32(OP_DESTROY_SESSION); 1849 xdr_encode_opaque_fixed(p, session->sess_id.data, NFS4_MAX_SESSIONID_LEN); 1850 hdr->nops++; 1851 hdr->replen += decode_destroy_session_maxsz; 1852 } 1853 1854 static void encode_reclaim_complete(struct xdr_stream *xdr, 1855 struct nfs41_reclaim_complete_args *args, 1856 struct compound_hdr *hdr) 1857 { 1858 __be32 *p; 1859 1860 p = reserve_space(xdr, 8); 1861 *p++ = cpu_to_be32(OP_RECLAIM_COMPLETE); 1862 *p++ = cpu_to_be32(args->one_fs); 1863 hdr->nops++; 1864 hdr->replen += decode_reclaim_complete_maxsz; 1865 } 1866 #endif /* CONFIG_NFS_V4_1 */ 1867 1868 static void encode_sequence(struct xdr_stream *xdr, 1869 const struct nfs4_sequence_args *args, 1870 struct compound_hdr *hdr) 1871 { 1872 #if defined(CONFIG_NFS_V4_1) 1873 struct nfs4_session *session = args->sa_session; 1874 struct nfs4_slot_table *tp; 1875 struct nfs4_slot *slot; 1876 __be32 *p; 1877 1878 if (!session) 1879 return; 1880 1881 tp = &session->fc_slot_table; 1882 1883 WARN_ON(args->sa_slotid == NFS4_MAX_SLOT_TABLE); 1884 slot = tp->slots + args->sa_slotid; 1885 1886 p = reserve_space(xdr, 4 + NFS4_MAX_SESSIONID_LEN + 16); 1887 *p++ = cpu_to_be32(OP_SEQUENCE); 1888 1889 /* 1890 * Sessionid + seqid + slotid + max slotid + cache_this 1891 */ 1892 dprintk("%s: sessionid=%u:%u:%u:%u seqid=%d slotid=%d " 1893 "max_slotid=%d cache_this=%d\n", 1894 __func__, 1895 ((u32 *)session->sess_id.data)[0], 1896 ((u32 *)session->sess_id.data)[1], 1897 ((u32 *)session->sess_id.data)[2], 1898 ((u32 *)session->sess_id.data)[3], 1899 slot->seq_nr, args->sa_slotid, 1900 tp->highest_used_slotid, args->sa_cache_this); 1901 p = xdr_encode_opaque_fixed(p, session->sess_id.data, NFS4_MAX_SESSIONID_LEN); 1902 *p++ = cpu_to_be32(slot->seq_nr); 1903 *p++ = cpu_to_be32(args->sa_slotid); 1904 *p++ = cpu_to_be32(tp->highest_used_slotid); 1905 *p = cpu_to_be32(args->sa_cache_this); 1906 hdr->nops++; 1907 hdr->replen += decode_sequence_maxsz; 1908 #endif /* CONFIG_NFS_V4_1 */ 1909 } 1910 1911 #ifdef CONFIG_NFS_V4_1 1912 static void 1913 encode_getdevicelist(struct xdr_stream *xdr, 1914 const struct nfs4_getdevicelist_args *args, 1915 struct compound_hdr *hdr) 1916 { 1917 __be32 *p; 1918 nfs4_verifier dummy = { 1919 .data = "dummmmmy", 1920 }; 1921 1922 p = reserve_space(xdr, 20); 1923 *p++ = cpu_to_be32(OP_GETDEVICELIST); 1924 *p++ = cpu_to_be32(args->layoutclass); 1925 *p++ = cpu_to_be32(NFS4_PNFS_GETDEVLIST_MAXNUM); 1926 xdr_encode_hyper(p, 0ULL); /* cookie */ 1927 encode_nfs4_verifier(xdr, &dummy); 1928 hdr->nops++; 1929 hdr->replen += decode_getdevicelist_maxsz; 1930 } 1931 1932 static void 1933 encode_getdeviceinfo(struct xdr_stream *xdr, 1934 const struct nfs4_getdeviceinfo_args *args, 1935 struct compound_hdr *hdr) 1936 { 1937 __be32 *p; 1938 1939 p = reserve_space(xdr, 16 + NFS4_DEVICEID4_SIZE); 1940 *p++ = cpu_to_be32(OP_GETDEVICEINFO); 1941 p = xdr_encode_opaque_fixed(p, args->pdev->dev_id.data, 1942 NFS4_DEVICEID4_SIZE); 1943 *p++ = cpu_to_be32(args->pdev->layout_type); 1944 *p++ = cpu_to_be32(args->pdev->pglen); /* gdia_maxcount */ 1945 *p++ = cpu_to_be32(0); /* bitmap length 0 */ 1946 hdr->nops++; 1947 hdr->replen += decode_getdeviceinfo_maxsz; 1948 } 1949 1950 static void 1951 encode_layoutget(struct xdr_stream *xdr, 1952 const struct nfs4_layoutget_args *args, 1953 struct compound_hdr *hdr) 1954 { 1955 __be32 *p; 1956 1957 p = reserve_space(xdr, 44 + NFS4_STATEID_SIZE); 1958 *p++ = cpu_to_be32(OP_LAYOUTGET); 1959 *p++ = cpu_to_be32(0); /* Signal layout available */ 1960 *p++ = cpu_to_be32(args->type); 1961 *p++ = cpu_to_be32(args->range.iomode); 1962 p = xdr_encode_hyper(p, args->range.offset); 1963 p = xdr_encode_hyper(p, args->range.length); 1964 p = xdr_encode_hyper(p, args->minlength); 1965 p = xdr_encode_opaque_fixed(p, &args->stateid.data, NFS4_STATEID_SIZE); 1966 *p = cpu_to_be32(args->maxcount); 1967 1968 dprintk("%s: 1st type:0x%x iomode:%d off:%lu len:%lu mc:%d\n", 1969 __func__, 1970 args->type, 1971 args->range.iomode, 1972 (unsigned long)args->range.offset, 1973 (unsigned long)args->range.length, 1974 args->maxcount); 1975 hdr->nops++; 1976 hdr->replen += decode_layoutget_maxsz; 1977 } 1978 1979 static int 1980 encode_layoutcommit(struct xdr_stream *xdr, 1981 struct inode *inode, 1982 const struct nfs4_layoutcommit_args *args, 1983 struct compound_hdr *hdr) 1984 { 1985 __be32 *p; 1986 1987 dprintk("%s: lbw: %llu type: %d\n", __func__, args->lastbytewritten, 1988 NFS_SERVER(args->inode)->pnfs_curr_ld->id); 1989 1990 p = reserve_space(xdr, 44 + NFS4_STATEID_SIZE); 1991 *p++ = cpu_to_be32(OP_LAYOUTCOMMIT); 1992 /* Only whole file layouts */ 1993 p = xdr_encode_hyper(p, 0); /* offset */ 1994 p = xdr_encode_hyper(p, args->lastbytewritten + 1); /* length */ 1995 *p++ = cpu_to_be32(0); /* reclaim */ 1996 p = xdr_encode_opaque_fixed(p, args->stateid.data, NFS4_STATEID_SIZE); 1997 *p++ = cpu_to_be32(1); /* newoffset = TRUE */ 1998 p = xdr_encode_hyper(p, args->lastbytewritten); 1999 *p++ = cpu_to_be32(0); /* Never send time_modify_changed */ 2000 *p++ = cpu_to_be32(NFS_SERVER(args->inode)->pnfs_curr_ld->id);/* type */ 2001 2002 if (NFS_SERVER(inode)->pnfs_curr_ld->encode_layoutcommit) 2003 NFS_SERVER(inode)->pnfs_curr_ld->encode_layoutcommit( 2004 NFS_I(inode)->layout, xdr, args); 2005 else { 2006 p = reserve_space(xdr, 4); 2007 *p = cpu_to_be32(0); /* no layout-type payload */ 2008 } 2009 2010 hdr->nops++; 2011 hdr->replen += decode_layoutcommit_maxsz; 2012 return 0; 2013 } 2014 2015 static void 2016 encode_layoutreturn(struct xdr_stream *xdr, 2017 const struct nfs4_layoutreturn_args *args, 2018 struct compound_hdr *hdr) 2019 { 2020 __be32 *p; 2021 2022 p = reserve_space(xdr, 20); 2023 *p++ = cpu_to_be32(OP_LAYOUTRETURN); 2024 *p++ = cpu_to_be32(0); /* reclaim. always 0 for now */ 2025 *p++ = cpu_to_be32(args->layout_type); 2026 *p++ = cpu_to_be32(IOMODE_ANY); 2027 *p = cpu_to_be32(RETURN_FILE); 2028 p = reserve_space(xdr, 16 + NFS4_STATEID_SIZE); 2029 p = xdr_encode_hyper(p, 0); 2030 p = xdr_encode_hyper(p, NFS4_MAX_UINT64); 2031 spin_lock(&args->inode->i_lock); 2032 xdr_encode_opaque_fixed(p, &args->stateid.data, NFS4_STATEID_SIZE); 2033 spin_unlock(&args->inode->i_lock); 2034 if (NFS_SERVER(args->inode)->pnfs_curr_ld->encode_layoutreturn) { 2035 NFS_SERVER(args->inode)->pnfs_curr_ld->encode_layoutreturn( 2036 NFS_I(args->inode)->layout, xdr, args); 2037 } else { 2038 p = reserve_space(xdr, 4); 2039 *p = cpu_to_be32(0); 2040 } 2041 hdr->nops++; 2042 hdr->replen += decode_layoutreturn_maxsz; 2043 } 2044 2045 static int 2046 encode_secinfo_no_name(struct xdr_stream *xdr, 2047 const struct nfs41_secinfo_no_name_args *args, 2048 struct compound_hdr *hdr) 2049 { 2050 __be32 *p; 2051 p = reserve_space(xdr, 8); 2052 *p++ = cpu_to_be32(OP_SECINFO_NO_NAME); 2053 *p++ = cpu_to_be32(args->style); 2054 hdr->nops++; 2055 hdr->replen += decode_secinfo_no_name_maxsz; 2056 return 0; 2057 } 2058 2059 static void encode_test_stateid(struct xdr_stream *xdr, 2060 struct nfs41_test_stateid_args *args, 2061 struct compound_hdr *hdr) 2062 { 2063 __be32 *p; 2064 2065 p = reserve_space(xdr, 8 + NFS4_STATEID_SIZE); 2066 *p++ = cpu_to_be32(OP_TEST_STATEID); 2067 *p++ = cpu_to_be32(1); 2068 xdr_encode_opaque_fixed(p, args->stateid->data, NFS4_STATEID_SIZE); 2069 hdr->nops++; 2070 hdr->replen += decode_test_stateid_maxsz; 2071 } 2072 2073 static void encode_free_stateid(struct xdr_stream *xdr, 2074 struct nfs41_free_stateid_args *args, 2075 struct compound_hdr *hdr) 2076 { 2077 __be32 *p; 2078 p = reserve_space(xdr, 4 + NFS4_STATEID_SIZE); 2079 *p++ = cpu_to_be32(OP_FREE_STATEID); 2080 xdr_encode_opaque_fixed(p, args->stateid->data, NFS4_STATEID_SIZE); 2081 hdr->nops++; 2082 hdr->replen += decode_free_stateid_maxsz; 2083 } 2084 #endif /* CONFIG_NFS_V4_1 */ 2085 2086 /* 2087 * END OF "GENERIC" ENCODE ROUTINES. 2088 */ 2089 2090 static u32 nfs4_xdr_minorversion(const struct nfs4_sequence_args *args) 2091 { 2092 #if defined(CONFIG_NFS_V4_1) 2093 if (args->sa_session) 2094 return args->sa_session->clp->cl_mvops->minor_version; 2095 #endif /* CONFIG_NFS_V4_1 */ 2096 return 0; 2097 } 2098 2099 /* 2100 * Encode an ACCESS request 2101 */ 2102 static void nfs4_xdr_enc_access(struct rpc_rqst *req, struct xdr_stream *xdr, 2103 const struct nfs4_accessargs *args) 2104 { 2105 struct compound_hdr hdr = { 2106 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2107 }; 2108 2109 encode_compound_hdr(xdr, req, &hdr); 2110 encode_sequence(xdr, &args->seq_args, &hdr); 2111 encode_putfh(xdr, args->fh, &hdr); 2112 encode_access(xdr, args->access, &hdr); 2113 encode_getfattr(xdr, args->bitmask, &hdr); 2114 encode_nops(&hdr); 2115 } 2116 2117 /* 2118 * Encode LOOKUP request 2119 */ 2120 static void nfs4_xdr_enc_lookup(struct rpc_rqst *req, struct xdr_stream *xdr, 2121 const struct nfs4_lookup_arg *args) 2122 { 2123 struct compound_hdr hdr = { 2124 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2125 }; 2126 2127 encode_compound_hdr(xdr, req, &hdr); 2128 encode_sequence(xdr, &args->seq_args, &hdr); 2129 encode_putfh(xdr, args->dir_fh, &hdr); 2130 encode_lookup(xdr, args->name, &hdr); 2131 encode_getfh(xdr, &hdr); 2132 encode_getfattr(xdr, args->bitmask, &hdr); 2133 encode_nops(&hdr); 2134 } 2135 2136 /* 2137 * Encode LOOKUP_ROOT request 2138 */ 2139 static void nfs4_xdr_enc_lookup_root(struct rpc_rqst *req, 2140 struct xdr_stream *xdr, 2141 const struct nfs4_lookup_root_arg *args) 2142 { 2143 struct compound_hdr hdr = { 2144 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2145 }; 2146 2147 encode_compound_hdr(xdr, req, &hdr); 2148 encode_sequence(xdr, &args->seq_args, &hdr); 2149 encode_putrootfh(xdr, &hdr); 2150 encode_getfh(xdr, &hdr); 2151 encode_getfattr(xdr, args->bitmask, &hdr); 2152 encode_nops(&hdr); 2153 } 2154 2155 /* 2156 * Encode REMOVE request 2157 */ 2158 static void nfs4_xdr_enc_remove(struct rpc_rqst *req, struct xdr_stream *xdr, 2159 const struct nfs_removeargs *args) 2160 { 2161 struct compound_hdr hdr = { 2162 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2163 }; 2164 2165 encode_compound_hdr(xdr, req, &hdr); 2166 encode_sequence(xdr, &args->seq_args, &hdr); 2167 encode_putfh(xdr, args->fh, &hdr); 2168 encode_remove(xdr, &args->name, &hdr); 2169 encode_getfattr(xdr, args->bitmask, &hdr); 2170 encode_nops(&hdr); 2171 } 2172 2173 /* 2174 * Encode RENAME request 2175 */ 2176 static void nfs4_xdr_enc_rename(struct rpc_rqst *req, struct xdr_stream *xdr, 2177 const struct nfs_renameargs *args) 2178 { 2179 struct compound_hdr hdr = { 2180 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2181 }; 2182 2183 encode_compound_hdr(xdr, req, &hdr); 2184 encode_sequence(xdr, &args->seq_args, &hdr); 2185 encode_putfh(xdr, args->old_dir, &hdr); 2186 encode_savefh(xdr, &hdr); 2187 encode_putfh(xdr, args->new_dir, &hdr); 2188 encode_rename(xdr, args->old_name, args->new_name, &hdr); 2189 encode_getfattr(xdr, args->bitmask, &hdr); 2190 encode_restorefh(xdr, &hdr); 2191 encode_getfattr(xdr, args->bitmask, &hdr); 2192 encode_nops(&hdr); 2193 } 2194 2195 /* 2196 * Encode LINK request 2197 */ 2198 static void nfs4_xdr_enc_link(struct rpc_rqst *req, struct xdr_stream *xdr, 2199 const struct nfs4_link_arg *args) 2200 { 2201 struct compound_hdr hdr = { 2202 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2203 }; 2204 2205 encode_compound_hdr(xdr, req, &hdr); 2206 encode_sequence(xdr, &args->seq_args, &hdr); 2207 encode_putfh(xdr, args->fh, &hdr); 2208 encode_savefh(xdr, &hdr); 2209 encode_putfh(xdr, args->dir_fh, &hdr); 2210 encode_link(xdr, args->name, &hdr); 2211 encode_getfattr(xdr, args->bitmask, &hdr); 2212 encode_restorefh(xdr, &hdr); 2213 encode_getfattr(xdr, args->bitmask, &hdr); 2214 encode_nops(&hdr); 2215 } 2216 2217 /* 2218 * Encode CREATE request 2219 */ 2220 static void nfs4_xdr_enc_create(struct rpc_rqst *req, struct xdr_stream *xdr, 2221 const struct nfs4_create_arg *args) 2222 { 2223 struct compound_hdr hdr = { 2224 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2225 }; 2226 2227 encode_compound_hdr(xdr, req, &hdr); 2228 encode_sequence(xdr, &args->seq_args, &hdr); 2229 encode_putfh(xdr, args->dir_fh, &hdr); 2230 encode_savefh(xdr, &hdr); 2231 encode_create(xdr, args, &hdr); 2232 encode_getfh(xdr, &hdr); 2233 encode_getfattr(xdr, args->bitmask, &hdr); 2234 encode_restorefh(xdr, &hdr); 2235 encode_getfattr(xdr, args->bitmask, &hdr); 2236 encode_nops(&hdr); 2237 } 2238 2239 /* 2240 * Encode SYMLINK request 2241 */ 2242 static void nfs4_xdr_enc_symlink(struct rpc_rqst *req, struct xdr_stream *xdr, 2243 const struct nfs4_create_arg *args) 2244 { 2245 nfs4_xdr_enc_create(req, xdr, args); 2246 } 2247 2248 /* 2249 * Encode GETATTR request 2250 */ 2251 static void nfs4_xdr_enc_getattr(struct rpc_rqst *req, struct xdr_stream *xdr, 2252 const struct nfs4_getattr_arg *args) 2253 { 2254 struct compound_hdr hdr = { 2255 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2256 }; 2257 2258 encode_compound_hdr(xdr, req, &hdr); 2259 encode_sequence(xdr, &args->seq_args, &hdr); 2260 encode_putfh(xdr, args->fh, &hdr); 2261 encode_getfattr(xdr, args->bitmask, &hdr); 2262 encode_nops(&hdr); 2263 } 2264 2265 /* 2266 * Encode a CLOSE request 2267 */ 2268 static void nfs4_xdr_enc_close(struct rpc_rqst *req, struct xdr_stream *xdr, 2269 struct nfs_closeargs *args) 2270 { 2271 struct compound_hdr hdr = { 2272 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2273 }; 2274 2275 encode_compound_hdr(xdr, req, &hdr); 2276 encode_sequence(xdr, &args->seq_args, &hdr); 2277 encode_putfh(xdr, args->fh, &hdr); 2278 encode_close(xdr, args, &hdr); 2279 encode_getfattr(xdr, args->bitmask, &hdr); 2280 encode_nops(&hdr); 2281 } 2282 2283 /* 2284 * Encode an OPEN request 2285 */ 2286 static void nfs4_xdr_enc_open(struct rpc_rqst *req, struct xdr_stream *xdr, 2287 struct nfs_openargs *args) 2288 { 2289 struct compound_hdr hdr = { 2290 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2291 }; 2292 2293 encode_compound_hdr(xdr, req, &hdr); 2294 encode_sequence(xdr, &args->seq_args, &hdr); 2295 encode_putfh(xdr, args->fh, &hdr); 2296 encode_savefh(xdr, &hdr); 2297 encode_open(xdr, args, &hdr); 2298 encode_getfh(xdr, &hdr); 2299 encode_getfattr(xdr, args->bitmask, &hdr); 2300 encode_restorefh(xdr, &hdr); 2301 encode_getfattr(xdr, args->dir_bitmask, &hdr); 2302 encode_nops(&hdr); 2303 } 2304 2305 /* 2306 * Encode an OPEN_CONFIRM request 2307 */ 2308 static void nfs4_xdr_enc_open_confirm(struct rpc_rqst *req, 2309 struct xdr_stream *xdr, 2310 struct nfs_open_confirmargs *args) 2311 { 2312 struct compound_hdr hdr = { 2313 .nops = 0, 2314 }; 2315 2316 encode_compound_hdr(xdr, req, &hdr); 2317 encode_putfh(xdr, args->fh, &hdr); 2318 encode_open_confirm(xdr, args, &hdr); 2319 encode_nops(&hdr); 2320 } 2321 2322 /* 2323 * Encode an OPEN request with no attributes. 2324 */ 2325 static void nfs4_xdr_enc_open_noattr(struct rpc_rqst *req, 2326 struct xdr_stream *xdr, 2327 struct nfs_openargs *args) 2328 { 2329 struct compound_hdr hdr = { 2330 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2331 }; 2332 2333 encode_compound_hdr(xdr, req, &hdr); 2334 encode_sequence(xdr, &args->seq_args, &hdr); 2335 encode_putfh(xdr, args->fh, &hdr); 2336 encode_open(xdr, args, &hdr); 2337 encode_getfattr(xdr, args->bitmask, &hdr); 2338 encode_nops(&hdr); 2339 } 2340 2341 /* 2342 * Encode an OPEN_DOWNGRADE request 2343 */ 2344 static void nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req, 2345 struct xdr_stream *xdr, 2346 struct nfs_closeargs *args) 2347 { 2348 struct compound_hdr hdr = { 2349 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2350 }; 2351 2352 encode_compound_hdr(xdr, req, &hdr); 2353 encode_sequence(xdr, &args->seq_args, &hdr); 2354 encode_putfh(xdr, args->fh, &hdr); 2355 encode_open_downgrade(xdr, args, &hdr); 2356 encode_getfattr(xdr, args->bitmask, &hdr); 2357 encode_nops(&hdr); 2358 } 2359 2360 /* 2361 * Encode a LOCK request 2362 */ 2363 static void nfs4_xdr_enc_lock(struct rpc_rqst *req, struct xdr_stream *xdr, 2364 struct nfs_lock_args *args) 2365 { 2366 struct compound_hdr hdr = { 2367 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2368 }; 2369 2370 encode_compound_hdr(xdr, req, &hdr); 2371 encode_sequence(xdr, &args->seq_args, &hdr); 2372 encode_putfh(xdr, args->fh, &hdr); 2373 encode_lock(xdr, args, &hdr); 2374 encode_nops(&hdr); 2375 } 2376 2377 /* 2378 * Encode a LOCKT request 2379 */ 2380 static void nfs4_xdr_enc_lockt(struct rpc_rqst *req, struct xdr_stream *xdr, 2381 struct nfs_lockt_args *args) 2382 { 2383 struct compound_hdr hdr = { 2384 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2385 }; 2386 2387 encode_compound_hdr(xdr, req, &hdr); 2388 encode_sequence(xdr, &args->seq_args, &hdr); 2389 encode_putfh(xdr, args->fh, &hdr); 2390 encode_lockt(xdr, args, &hdr); 2391 encode_nops(&hdr); 2392 } 2393 2394 /* 2395 * Encode a LOCKU request 2396 */ 2397 static void nfs4_xdr_enc_locku(struct rpc_rqst *req, struct xdr_stream *xdr, 2398 struct nfs_locku_args *args) 2399 { 2400 struct compound_hdr hdr = { 2401 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2402 }; 2403 2404 encode_compound_hdr(xdr, req, &hdr); 2405 encode_sequence(xdr, &args->seq_args, &hdr); 2406 encode_putfh(xdr, args->fh, &hdr); 2407 encode_locku(xdr, args, &hdr); 2408 encode_nops(&hdr); 2409 } 2410 2411 static void nfs4_xdr_enc_release_lockowner(struct rpc_rqst *req, 2412 struct xdr_stream *xdr, 2413 struct nfs_release_lockowner_args *args) 2414 { 2415 struct compound_hdr hdr = { 2416 .minorversion = 0, 2417 }; 2418 2419 encode_compound_hdr(xdr, req, &hdr); 2420 encode_release_lockowner(xdr, &args->lock_owner, &hdr); 2421 encode_nops(&hdr); 2422 } 2423 2424 /* 2425 * Encode a READLINK request 2426 */ 2427 static void nfs4_xdr_enc_readlink(struct rpc_rqst *req, struct xdr_stream *xdr, 2428 const struct nfs4_readlink *args) 2429 { 2430 struct compound_hdr hdr = { 2431 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2432 }; 2433 2434 encode_compound_hdr(xdr, req, &hdr); 2435 encode_sequence(xdr, &args->seq_args, &hdr); 2436 encode_putfh(xdr, args->fh, &hdr); 2437 encode_readlink(xdr, args, req, &hdr); 2438 2439 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages, 2440 args->pgbase, args->pglen); 2441 encode_nops(&hdr); 2442 } 2443 2444 /* 2445 * Encode a READDIR request 2446 */ 2447 static void nfs4_xdr_enc_readdir(struct rpc_rqst *req, struct xdr_stream *xdr, 2448 const struct nfs4_readdir_arg *args) 2449 { 2450 struct compound_hdr hdr = { 2451 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2452 }; 2453 2454 encode_compound_hdr(xdr, req, &hdr); 2455 encode_sequence(xdr, &args->seq_args, &hdr); 2456 encode_putfh(xdr, args->fh, &hdr); 2457 encode_readdir(xdr, args, req, &hdr); 2458 2459 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages, 2460 args->pgbase, args->count); 2461 dprintk("%s: inlined page args = (%u, %p, %u, %u)\n", 2462 __func__, hdr.replen << 2, args->pages, 2463 args->pgbase, args->count); 2464 encode_nops(&hdr); 2465 } 2466 2467 /* 2468 * Encode a READ request 2469 */ 2470 static void nfs4_xdr_enc_read(struct rpc_rqst *req, struct xdr_stream *xdr, 2471 struct nfs_readargs *args) 2472 { 2473 struct compound_hdr hdr = { 2474 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2475 }; 2476 2477 encode_compound_hdr(xdr, req, &hdr); 2478 encode_sequence(xdr, &args->seq_args, &hdr); 2479 encode_putfh(xdr, args->fh, &hdr); 2480 encode_read(xdr, args, &hdr); 2481 2482 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, 2483 args->pages, args->pgbase, args->count); 2484 req->rq_rcv_buf.flags |= XDRBUF_READ; 2485 encode_nops(&hdr); 2486 } 2487 2488 /* 2489 * Encode an SETATTR request 2490 */ 2491 static void nfs4_xdr_enc_setattr(struct rpc_rqst *req, struct xdr_stream *xdr, 2492 struct nfs_setattrargs *args) 2493 { 2494 struct compound_hdr hdr = { 2495 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2496 }; 2497 2498 encode_compound_hdr(xdr, req, &hdr); 2499 encode_sequence(xdr, &args->seq_args, &hdr); 2500 encode_putfh(xdr, args->fh, &hdr); 2501 encode_setattr(xdr, args, args->server, &hdr); 2502 encode_getfattr(xdr, args->bitmask, &hdr); 2503 encode_nops(&hdr); 2504 } 2505 2506 /* 2507 * Encode a GETACL request 2508 */ 2509 static void nfs4_xdr_enc_getacl(struct rpc_rqst *req, struct xdr_stream *xdr, 2510 struct nfs_getaclargs *args) 2511 { 2512 struct compound_hdr hdr = { 2513 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2514 }; 2515 uint32_t replen; 2516 2517 encode_compound_hdr(xdr, req, &hdr); 2518 encode_sequence(xdr, &args->seq_args, &hdr); 2519 encode_putfh(xdr, args->fh, &hdr); 2520 replen = hdr.replen + op_decode_hdr_maxsz + 1; 2521 encode_getattr_two(xdr, FATTR4_WORD0_ACL, 0, &hdr); 2522 2523 xdr_inline_pages(&req->rq_rcv_buf, replen << 2, 2524 args->acl_pages, args->acl_pgbase, args->acl_len); 2525 2526 encode_nops(&hdr); 2527 } 2528 2529 /* 2530 * Encode a WRITE request 2531 */ 2532 static void nfs4_xdr_enc_write(struct rpc_rqst *req, struct xdr_stream *xdr, 2533 struct nfs_writeargs *args) 2534 { 2535 struct compound_hdr hdr = { 2536 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2537 }; 2538 2539 encode_compound_hdr(xdr, req, &hdr); 2540 encode_sequence(xdr, &args->seq_args, &hdr); 2541 encode_putfh(xdr, args->fh, &hdr); 2542 encode_write(xdr, args, &hdr); 2543 req->rq_snd_buf.flags |= XDRBUF_WRITE; 2544 if (args->bitmask) 2545 encode_getfattr(xdr, args->bitmask, &hdr); 2546 encode_nops(&hdr); 2547 } 2548 2549 /* 2550 * a COMMIT request 2551 */ 2552 static void nfs4_xdr_enc_commit(struct rpc_rqst *req, struct xdr_stream *xdr, 2553 struct nfs_writeargs *args) 2554 { 2555 struct compound_hdr hdr = { 2556 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2557 }; 2558 2559 encode_compound_hdr(xdr, req, &hdr); 2560 encode_sequence(xdr, &args->seq_args, &hdr); 2561 encode_putfh(xdr, args->fh, &hdr); 2562 encode_commit(xdr, args, &hdr); 2563 if (args->bitmask) 2564 encode_getfattr(xdr, args->bitmask, &hdr); 2565 encode_nops(&hdr); 2566 } 2567 2568 /* 2569 * FSINFO request 2570 */ 2571 static void nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr, 2572 struct nfs4_fsinfo_arg *args) 2573 { 2574 struct compound_hdr hdr = { 2575 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2576 }; 2577 2578 encode_compound_hdr(xdr, req, &hdr); 2579 encode_sequence(xdr, &args->seq_args, &hdr); 2580 encode_putfh(xdr, args->fh, &hdr); 2581 encode_fsinfo(xdr, args->bitmask, &hdr); 2582 encode_nops(&hdr); 2583 } 2584 2585 /* 2586 * a PATHCONF request 2587 */ 2588 static void nfs4_xdr_enc_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr, 2589 const struct nfs4_pathconf_arg *args) 2590 { 2591 struct compound_hdr hdr = { 2592 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2593 }; 2594 2595 encode_compound_hdr(xdr, req, &hdr); 2596 encode_sequence(xdr, &args->seq_args, &hdr); 2597 encode_putfh(xdr, args->fh, &hdr); 2598 encode_getattr_one(xdr, args->bitmask[0] & nfs4_pathconf_bitmap[0], 2599 &hdr); 2600 encode_nops(&hdr); 2601 } 2602 2603 /* 2604 * a STATFS request 2605 */ 2606 static void nfs4_xdr_enc_statfs(struct rpc_rqst *req, struct xdr_stream *xdr, 2607 const struct nfs4_statfs_arg *args) 2608 { 2609 struct compound_hdr hdr = { 2610 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2611 }; 2612 2613 encode_compound_hdr(xdr, req, &hdr); 2614 encode_sequence(xdr, &args->seq_args, &hdr); 2615 encode_putfh(xdr, args->fh, &hdr); 2616 encode_getattr_two(xdr, args->bitmask[0] & nfs4_statfs_bitmap[0], 2617 args->bitmask[1] & nfs4_statfs_bitmap[1], &hdr); 2618 encode_nops(&hdr); 2619 } 2620 2621 /* 2622 * GETATTR_BITMAP request 2623 */ 2624 static void nfs4_xdr_enc_server_caps(struct rpc_rqst *req, 2625 struct xdr_stream *xdr, 2626 struct nfs4_server_caps_arg *args) 2627 { 2628 struct compound_hdr hdr = { 2629 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2630 }; 2631 2632 encode_compound_hdr(xdr, req, &hdr); 2633 encode_sequence(xdr, &args->seq_args, &hdr); 2634 encode_putfh(xdr, args->fhandle, &hdr); 2635 encode_getattr_one(xdr, FATTR4_WORD0_SUPPORTED_ATTRS| 2636 FATTR4_WORD0_LINK_SUPPORT| 2637 FATTR4_WORD0_SYMLINK_SUPPORT| 2638 FATTR4_WORD0_ACLSUPPORT, &hdr); 2639 encode_nops(&hdr); 2640 } 2641 2642 /* 2643 * a RENEW request 2644 */ 2645 static void nfs4_xdr_enc_renew(struct rpc_rqst *req, struct xdr_stream *xdr, 2646 struct nfs_client *clp) 2647 { 2648 struct compound_hdr hdr = { 2649 .nops = 0, 2650 }; 2651 2652 encode_compound_hdr(xdr, req, &hdr); 2653 encode_renew(xdr, clp, &hdr); 2654 encode_nops(&hdr); 2655 } 2656 2657 /* 2658 * a SETCLIENTID request 2659 */ 2660 static void nfs4_xdr_enc_setclientid(struct rpc_rqst *req, 2661 struct xdr_stream *xdr, 2662 struct nfs4_setclientid *sc) 2663 { 2664 struct compound_hdr hdr = { 2665 .nops = 0, 2666 }; 2667 2668 encode_compound_hdr(xdr, req, &hdr); 2669 encode_setclientid(xdr, sc, &hdr); 2670 encode_nops(&hdr); 2671 } 2672 2673 /* 2674 * a SETCLIENTID_CONFIRM request 2675 */ 2676 static void nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req, 2677 struct xdr_stream *xdr, 2678 struct nfs4_setclientid_res *arg) 2679 { 2680 struct compound_hdr hdr = { 2681 .nops = 0, 2682 }; 2683 const u32 lease_bitmap[3] = { FATTR4_WORD0_LEASE_TIME }; 2684 2685 encode_compound_hdr(xdr, req, &hdr); 2686 encode_setclientid_confirm(xdr, arg, &hdr); 2687 encode_putrootfh(xdr, &hdr); 2688 encode_fsinfo(xdr, lease_bitmap, &hdr); 2689 encode_nops(&hdr); 2690 } 2691 2692 /* 2693 * DELEGRETURN request 2694 */ 2695 static void nfs4_xdr_enc_delegreturn(struct rpc_rqst *req, 2696 struct xdr_stream *xdr, 2697 const struct nfs4_delegreturnargs *args) 2698 { 2699 struct compound_hdr hdr = { 2700 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2701 }; 2702 2703 encode_compound_hdr(xdr, req, &hdr); 2704 encode_sequence(xdr, &args->seq_args, &hdr); 2705 encode_putfh(xdr, args->fhandle, &hdr); 2706 encode_delegreturn(xdr, args->stateid, &hdr); 2707 encode_getfattr(xdr, args->bitmask, &hdr); 2708 encode_nops(&hdr); 2709 } 2710 2711 /* 2712 * Encode FS_LOCATIONS request 2713 */ 2714 static void nfs4_xdr_enc_fs_locations(struct rpc_rqst *req, 2715 struct xdr_stream *xdr, 2716 struct nfs4_fs_locations_arg *args) 2717 { 2718 struct compound_hdr hdr = { 2719 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2720 }; 2721 uint32_t replen; 2722 2723 encode_compound_hdr(xdr, req, &hdr); 2724 encode_sequence(xdr, &args->seq_args, &hdr); 2725 encode_putfh(xdr, args->dir_fh, &hdr); 2726 encode_lookup(xdr, args->name, &hdr); 2727 replen = hdr.replen; /* get the attribute into args->page */ 2728 encode_fs_locations(xdr, args->bitmask, &hdr); 2729 2730 xdr_inline_pages(&req->rq_rcv_buf, replen << 2, &args->page, 2731 0, PAGE_SIZE); 2732 encode_nops(&hdr); 2733 } 2734 2735 /* 2736 * Encode SECINFO request 2737 */ 2738 static void nfs4_xdr_enc_secinfo(struct rpc_rqst *req, 2739 struct xdr_stream *xdr, 2740 struct nfs4_secinfo_arg *args) 2741 { 2742 struct compound_hdr hdr = { 2743 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2744 }; 2745 2746 encode_compound_hdr(xdr, req, &hdr); 2747 encode_sequence(xdr, &args->seq_args, &hdr); 2748 encode_putfh(xdr, args->dir_fh, &hdr); 2749 encode_secinfo(xdr, args->name, &hdr); 2750 encode_nops(&hdr); 2751 } 2752 2753 #if defined(CONFIG_NFS_V4_1) 2754 /* 2755 * EXCHANGE_ID request 2756 */ 2757 static void nfs4_xdr_enc_exchange_id(struct rpc_rqst *req, 2758 struct xdr_stream *xdr, 2759 struct nfs41_exchange_id_args *args) 2760 { 2761 struct compound_hdr hdr = { 2762 .minorversion = args->client->cl_mvops->minor_version, 2763 }; 2764 2765 encode_compound_hdr(xdr, req, &hdr); 2766 encode_exchange_id(xdr, args, &hdr); 2767 encode_nops(&hdr); 2768 } 2769 2770 /* 2771 * a CREATE_SESSION request 2772 */ 2773 static void nfs4_xdr_enc_create_session(struct rpc_rqst *req, 2774 struct xdr_stream *xdr, 2775 struct nfs41_create_session_args *args) 2776 { 2777 struct compound_hdr hdr = { 2778 .minorversion = args->client->cl_mvops->minor_version, 2779 }; 2780 2781 encode_compound_hdr(xdr, req, &hdr); 2782 encode_create_session(xdr, args, &hdr); 2783 encode_nops(&hdr); 2784 } 2785 2786 /* 2787 * a DESTROY_SESSION request 2788 */ 2789 static void nfs4_xdr_enc_destroy_session(struct rpc_rqst *req, 2790 struct xdr_stream *xdr, 2791 struct nfs4_session *session) 2792 { 2793 struct compound_hdr hdr = { 2794 .minorversion = session->clp->cl_mvops->minor_version, 2795 }; 2796 2797 encode_compound_hdr(xdr, req, &hdr); 2798 encode_destroy_session(xdr, session, &hdr); 2799 encode_nops(&hdr); 2800 } 2801 2802 /* 2803 * a SEQUENCE request 2804 */ 2805 static void nfs4_xdr_enc_sequence(struct rpc_rqst *req, struct xdr_stream *xdr, 2806 struct nfs4_sequence_args *args) 2807 { 2808 struct compound_hdr hdr = { 2809 .minorversion = nfs4_xdr_minorversion(args), 2810 }; 2811 2812 encode_compound_hdr(xdr, req, &hdr); 2813 encode_sequence(xdr, args, &hdr); 2814 encode_nops(&hdr); 2815 } 2816 2817 /* 2818 * a GET_LEASE_TIME request 2819 */ 2820 static void nfs4_xdr_enc_get_lease_time(struct rpc_rqst *req, 2821 struct xdr_stream *xdr, 2822 struct nfs4_get_lease_time_args *args) 2823 { 2824 struct compound_hdr hdr = { 2825 .minorversion = nfs4_xdr_minorversion(&args->la_seq_args), 2826 }; 2827 const u32 lease_bitmap[3] = { FATTR4_WORD0_LEASE_TIME }; 2828 2829 encode_compound_hdr(xdr, req, &hdr); 2830 encode_sequence(xdr, &args->la_seq_args, &hdr); 2831 encode_putrootfh(xdr, &hdr); 2832 encode_fsinfo(xdr, lease_bitmap, &hdr); 2833 encode_nops(&hdr); 2834 } 2835 2836 /* 2837 * a RECLAIM_COMPLETE request 2838 */ 2839 static void nfs4_xdr_enc_reclaim_complete(struct rpc_rqst *req, 2840 struct xdr_stream *xdr, 2841 struct nfs41_reclaim_complete_args *args) 2842 { 2843 struct compound_hdr hdr = { 2844 .minorversion = nfs4_xdr_minorversion(&args->seq_args) 2845 }; 2846 2847 encode_compound_hdr(xdr, req, &hdr); 2848 encode_sequence(xdr, &args->seq_args, &hdr); 2849 encode_reclaim_complete(xdr, args, &hdr); 2850 encode_nops(&hdr); 2851 } 2852 2853 /* 2854 * Encode GETDEVICELIST request 2855 */ 2856 static void nfs4_xdr_enc_getdevicelist(struct rpc_rqst *req, 2857 struct xdr_stream *xdr, 2858 struct nfs4_getdevicelist_args *args) 2859 { 2860 struct compound_hdr hdr = { 2861 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2862 }; 2863 2864 encode_compound_hdr(xdr, req, &hdr); 2865 encode_sequence(xdr, &args->seq_args, &hdr); 2866 encode_putfh(xdr, args->fh, &hdr); 2867 encode_getdevicelist(xdr, args, &hdr); 2868 encode_nops(&hdr); 2869 } 2870 2871 /* 2872 * Encode GETDEVICEINFO request 2873 */ 2874 static void nfs4_xdr_enc_getdeviceinfo(struct rpc_rqst *req, 2875 struct xdr_stream *xdr, 2876 struct nfs4_getdeviceinfo_args *args) 2877 { 2878 struct compound_hdr hdr = { 2879 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2880 }; 2881 2882 encode_compound_hdr(xdr, req, &hdr); 2883 encode_sequence(xdr, &args->seq_args, &hdr); 2884 encode_getdeviceinfo(xdr, args, &hdr); 2885 2886 /* set up reply kvec. Subtract notification bitmap max size (2) 2887 * so that notification bitmap is put in xdr_buf tail */ 2888 xdr_inline_pages(&req->rq_rcv_buf, (hdr.replen - 2) << 2, 2889 args->pdev->pages, args->pdev->pgbase, 2890 args->pdev->pglen); 2891 2892 encode_nops(&hdr); 2893 } 2894 2895 /* 2896 * Encode LAYOUTGET request 2897 */ 2898 static void nfs4_xdr_enc_layoutget(struct rpc_rqst *req, 2899 struct xdr_stream *xdr, 2900 struct nfs4_layoutget_args *args) 2901 { 2902 struct compound_hdr hdr = { 2903 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2904 }; 2905 2906 encode_compound_hdr(xdr, req, &hdr); 2907 encode_sequence(xdr, &args->seq_args, &hdr); 2908 encode_putfh(xdr, NFS_FH(args->inode), &hdr); 2909 encode_layoutget(xdr, args, &hdr); 2910 2911 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, 2912 args->layout.pages, 0, args->layout.pglen); 2913 2914 encode_nops(&hdr); 2915 } 2916 2917 /* 2918 * Encode LAYOUTCOMMIT request 2919 */ 2920 static void nfs4_xdr_enc_layoutcommit(struct rpc_rqst *req, 2921 struct xdr_stream *xdr, 2922 struct nfs4_layoutcommit_args *args) 2923 { 2924 struct nfs4_layoutcommit_data *data = 2925 container_of(args, struct nfs4_layoutcommit_data, args); 2926 struct compound_hdr hdr = { 2927 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2928 }; 2929 2930 encode_compound_hdr(xdr, req, &hdr); 2931 encode_sequence(xdr, &args->seq_args, &hdr); 2932 encode_putfh(xdr, NFS_FH(args->inode), &hdr); 2933 encode_layoutcommit(xdr, data->args.inode, args, &hdr); 2934 encode_getfattr(xdr, args->bitmask, &hdr); 2935 encode_nops(&hdr); 2936 } 2937 2938 /* 2939 * Encode LAYOUTRETURN request 2940 */ 2941 static void nfs4_xdr_enc_layoutreturn(struct rpc_rqst *req, 2942 struct xdr_stream *xdr, 2943 struct nfs4_layoutreturn_args *args) 2944 { 2945 struct compound_hdr hdr = { 2946 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2947 }; 2948 2949 encode_compound_hdr(xdr, req, &hdr); 2950 encode_sequence(xdr, &args->seq_args, &hdr); 2951 encode_putfh(xdr, NFS_FH(args->inode), &hdr); 2952 encode_layoutreturn(xdr, args, &hdr); 2953 encode_nops(&hdr); 2954 } 2955 2956 /* 2957 * Encode SECINFO_NO_NAME request 2958 */ 2959 static int nfs4_xdr_enc_secinfo_no_name(struct rpc_rqst *req, 2960 struct xdr_stream *xdr, 2961 struct nfs41_secinfo_no_name_args *args) 2962 { 2963 struct compound_hdr hdr = { 2964 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2965 }; 2966 2967 encode_compound_hdr(xdr, req, &hdr); 2968 encode_sequence(xdr, &args->seq_args, &hdr); 2969 encode_putrootfh(xdr, &hdr); 2970 encode_secinfo_no_name(xdr, args, &hdr); 2971 encode_nops(&hdr); 2972 return 0; 2973 } 2974 2975 /* 2976 * Encode TEST_STATEID request 2977 */ 2978 static void nfs4_xdr_enc_test_stateid(struct rpc_rqst *req, 2979 struct xdr_stream *xdr, 2980 struct nfs41_test_stateid_args *args) 2981 { 2982 struct compound_hdr hdr = { 2983 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2984 }; 2985 2986 encode_compound_hdr(xdr, req, &hdr); 2987 encode_sequence(xdr, &args->seq_args, &hdr); 2988 encode_test_stateid(xdr, args, &hdr); 2989 encode_nops(&hdr); 2990 } 2991 2992 /* 2993 * Encode FREE_STATEID request 2994 */ 2995 static void nfs4_xdr_enc_free_stateid(struct rpc_rqst *req, 2996 struct xdr_stream *xdr, 2997 struct nfs41_free_stateid_args *args) 2998 { 2999 struct compound_hdr hdr = { 3000 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 3001 }; 3002 3003 encode_compound_hdr(xdr, req, &hdr); 3004 encode_sequence(xdr, &args->seq_args, &hdr); 3005 encode_free_stateid(xdr, args, &hdr); 3006 encode_nops(&hdr); 3007 } 3008 #endif /* CONFIG_NFS_V4_1 */ 3009 3010 static void print_overflow_msg(const char *func, const struct xdr_stream *xdr) 3011 { 3012 dprintk("nfs: %s: prematurely hit end of receive buffer. " 3013 "Remaining buffer length is %tu words.\n", 3014 func, xdr->end - xdr->p); 3015 } 3016 3017 static int decode_opaque_inline(struct xdr_stream *xdr, unsigned int *len, char **string) 3018 { 3019 __be32 *p; 3020 3021 p = xdr_inline_decode(xdr, 4); 3022 if (unlikely(!p)) 3023 goto out_overflow; 3024 *len = be32_to_cpup(p); 3025 p = xdr_inline_decode(xdr, *len); 3026 if (unlikely(!p)) 3027 goto out_overflow; 3028 *string = (char *)p; 3029 return 0; 3030 out_overflow: 3031 print_overflow_msg(__func__, xdr); 3032 return -EIO; 3033 } 3034 3035 static int decode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr) 3036 { 3037 __be32 *p; 3038 3039 p = xdr_inline_decode(xdr, 8); 3040 if (unlikely(!p)) 3041 goto out_overflow; 3042 hdr->status = be32_to_cpup(p++); 3043 hdr->taglen = be32_to_cpup(p); 3044 3045 p = xdr_inline_decode(xdr, hdr->taglen + 4); 3046 if (unlikely(!p)) 3047 goto out_overflow; 3048 hdr->tag = (char *)p; 3049 p += XDR_QUADLEN(hdr->taglen); 3050 hdr->nops = be32_to_cpup(p); 3051 if (unlikely(hdr->nops < 1)) 3052 return nfs4_stat_to_errno(hdr->status); 3053 return 0; 3054 out_overflow: 3055 print_overflow_msg(__func__, xdr); 3056 return -EIO; 3057 } 3058 3059 static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected) 3060 { 3061 __be32 *p; 3062 uint32_t opnum; 3063 int32_t nfserr; 3064 3065 p = xdr_inline_decode(xdr, 8); 3066 if (unlikely(!p)) 3067 goto out_overflow; 3068 opnum = be32_to_cpup(p++); 3069 if (opnum != expected) { 3070 dprintk("nfs: Server returned operation" 3071 " %d but we issued a request for %d\n", 3072 opnum, expected); 3073 return -EIO; 3074 } 3075 nfserr = be32_to_cpup(p); 3076 if (nfserr != NFS_OK) 3077 return nfs4_stat_to_errno(nfserr); 3078 return 0; 3079 out_overflow: 3080 print_overflow_msg(__func__, xdr); 3081 return -EIO; 3082 } 3083 3084 /* Dummy routine */ 3085 static int decode_ace(struct xdr_stream *xdr, void *ace, struct nfs_client *clp) 3086 { 3087 __be32 *p; 3088 unsigned int strlen; 3089 char *str; 3090 3091 p = xdr_inline_decode(xdr, 12); 3092 if (likely(p)) 3093 return decode_opaque_inline(xdr, &strlen, &str); 3094 print_overflow_msg(__func__, xdr); 3095 return -EIO; 3096 } 3097 3098 static int decode_attr_bitmap(struct xdr_stream *xdr, uint32_t *bitmap) 3099 { 3100 uint32_t bmlen; 3101 __be32 *p; 3102 3103 p = xdr_inline_decode(xdr, 4); 3104 if (unlikely(!p)) 3105 goto out_overflow; 3106 bmlen = be32_to_cpup(p); 3107 3108 bitmap[0] = bitmap[1] = bitmap[2] = 0; 3109 p = xdr_inline_decode(xdr, (bmlen << 2)); 3110 if (unlikely(!p)) 3111 goto out_overflow; 3112 if (bmlen > 0) { 3113 bitmap[0] = be32_to_cpup(p++); 3114 if (bmlen > 1) { 3115 bitmap[1] = be32_to_cpup(p++); 3116 if (bmlen > 2) 3117 bitmap[2] = be32_to_cpup(p); 3118 } 3119 } 3120 return 0; 3121 out_overflow: 3122 print_overflow_msg(__func__, xdr); 3123 return -EIO; 3124 } 3125 3126 static inline int decode_attr_length(struct xdr_stream *xdr, uint32_t *attrlen, __be32 **savep) 3127 { 3128 __be32 *p; 3129 3130 p = xdr_inline_decode(xdr, 4); 3131 if (unlikely(!p)) 3132 goto out_overflow; 3133 *attrlen = be32_to_cpup(p); 3134 *savep = xdr->p; 3135 return 0; 3136 out_overflow: 3137 print_overflow_msg(__func__, xdr); 3138 return -EIO; 3139 } 3140 3141 static int decode_attr_supported(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *bitmask) 3142 { 3143 if (likely(bitmap[0] & FATTR4_WORD0_SUPPORTED_ATTRS)) { 3144 int ret; 3145 ret = decode_attr_bitmap(xdr, bitmask); 3146 if (unlikely(ret < 0)) 3147 return ret; 3148 bitmap[0] &= ~FATTR4_WORD0_SUPPORTED_ATTRS; 3149 } else 3150 bitmask[0] = bitmask[1] = bitmask[2] = 0; 3151 dprintk("%s: bitmask=%08x:%08x:%08x\n", __func__, 3152 bitmask[0], bitmask[1], bitmask[2]); 3153 return 0; 3154 } 3155 3156 static int decode_attr_type(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *type) 3157 { 3158 __be32 *p; 3159 int ret = 0; 3160 3161 *type = 0; 3162 if (unlikely(bitmap[0] & (FATTR4_WORD0_TYPE - 1U))) 3163 return -EIO; 3164 if (likely(bitmap[0] & FATTR4_WORD0_TYPE)) { 3165 p = xdr_inline_decode(xdr, 4); 3166 if (unlikely(!p)) 3167 goto out_overflow; 3168 *type = be32_to_cpup(p); 3169 if (*type < NF4REG || *type > NF4NAMEDATTR) { 3170 dprintk("%s: bad type %d\n", __func__, *type); 3171 return -EIO; 3172 } 3173 bitmap[0] &= ~FATTR4_WORD0_TYPE; 3174 ret = NFS_ATTR_FATTR_TYPE; 3175 } 3176 dprintk("%s: type=0%o\n", __func__, nfs_type2fmt[*type]); 3177 return ret; 3178 out_overflow: 3179 print_overflow_msg(__func__, xdr); 3180 return -EIO; 3181 } 3182 3183 static int decode_attr_change(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *change) 3184 { 3185 __be32 *p; 3186 int ret = 0; 3187 3188 *change = 0; 3189 if (unlikely(bitmap[0] & (FATTR4_WORD0_CHANGE - 1U))) 3190 return -EIO; 3191 if (likely(bitmap[0] & FATTR4_WORD0_CHANGE)) { 3192 p = xdr_inline_decode(xdr, 8); 3193 if (unlikely(!p)) 3194 goto out_overflow; 3195 xdr_decode_hyper(p, change); 3196 bitmap[0] &= ~FATTR4_WORD0_CHANGE; 3197 ret = NFS_ATTR_FATTR_CHANGE; 3198 } 3199 dprintk("%s: change attribute=%Lu\n", __func__, 3200 (unsigned long long)*change); 3201 return ret; 3202 out_overflow: 3203 print_overflow_msg(__func__, xdr); 3204 return -EIO; 3205 } 3206 3207 static int decode_attr_size(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *size) 3208 { 3209 __be32 *p; 3210 int ret = 0; 3211 3212 *size = 0; 3213 if (unlikely(bitmap[0] & (FATTR4_WORD0_SIZE - 1U))) 3214 return -EIO; 3215 if (likely(bitmap[0] & FATTR4_WORD0_SIZE)) { 3216 p = xdr_inline_decode(xdr, 8); 3217 if (unlikely(!p)) 3218 goto out_overflow; 3219 xdr_decode_hyper(p, size); 3220 bitmap[0] &= ~FATTR4_WORD0_SIZE; 3221 ret = NFS_ATTR_FATTR_SIZE; 3222 } 3223 dprintk("%s: file size=%Lu\n", __func__, (unsigned long long)*size); 3224 return ret; 3225 out_overflow: 3226 print_overflow_msg(__func__, xdr); 3227 return -EIO; 3228 } 3229 3230 static int decode_attr_link_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) 3231 { 3232 __be32 *p; 3233 3234 *res = 0; 3235 if (unlikely(bitmap[0] & (FATTR4_WORD0_LINK_SUPPORT - 1U))) 3236 return -EIO; 3237 if (likely(bitmap[0] & FATTR4_WORD0_LINK_SUPPORT)) { 3238 p = xdr_inline_decode(xdr, 4); 3239 if (unlikely(!p)) 3240 goto out_overflow; 3241 *res = be32_to_cpup(p); 3242 bitmap[0] &= ~FATTR4_WORD0_LINK_SUPPORT; 3243 } 3244 dprintk("%s: link support=%s\n", __func__, *res == 0 ? "false" : "true"); 3245 return 0; 3246 out_overflow: 3247 print_overflow_msg(__func__, xdr); 3248 return -EIO; 3249 } 3250 3251 static int decode_attr_symlink_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) 3252 { 3253 __be32 *p; 3254 3255 *res = 0; 3256 if (unlikely(bitmap[0] & (FATTR4_WORD0_SYMLINK_SUPPORT - 1U))) 3257 return -EIO; 3258 if (likely(bitmap[0] & FATTR4_WORD0_SYMLINK_SUPPORT)) { 3259 p = xdr_inline_decode(xdr, 4); 3260 if (unlikely(!p)) 3261 goto out_overflow; 3262 *res = be32_to_cpup(p); 3263 bitmap[0] &= ~FATTR4_WORD0_SYMLINK_SUPPORT; 3264 } 3265 dprintk("%s: symlink support=%s\n", __func__, *res == 0 ? "false" : "true"); 3266 return 0; 3267 out_overflow: 3268 print_overflow_msg(__func__, xdr); 3269 return -EIO; 3270 } 3271 3272 static int decode_attr_fsid(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fsid *fsid) 3273 { 3274 __be32 *p; 3275 int ret = 0; 3276 3277 fsid->major = 0; 3278 fsid->minor = 0; 3279 if (unlikely(bitmap[0] & (FATTR4_WORD0_FSID - 1U))) 3280 return -EIO; 3281 if (likely(bitmap[0] & FATTR4_WORD0_FSID)) { 3282 p = xdr_inline_decode(xdr, 16); 3283 if (unlikely(!p)) 3284 goto out_overflow; 3285 p = xdr_decode_hyper(p, &fsid->major); 3286 xdr_decode_hyper(p, &fsid->minor); 3287 bitmap[0] &= ~FATTR4_WORD0_FSID; 3288 ret = NFS_ATTR_FATTR_FSID; 3289 } 3290 dprintk("%s: fsid=(0x%Lx/0x%Lx)\n", __func__, 3291 (unsigned long long)fsid->major, 3292 (unsigned long long)fsid->minor); 3293 return ret; 3294 out_overflow: 3295 print_overflow_msg(__func__, xdr); 3296 return -EIO; 3297 } 3298 3299 static int decode_attr_lease_time(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) 3300 { 3301 __be32 *p; 3302 3303 *res = 60; 3304 if (unlikely(bitmap[0] & (FATTR4_WORD0_LEASE_TIME - 1U))) 3305 return -EIO; 3306 if (likely(bitmap[0] & FATTR4_WORD0_LEASE_TIME)) { 3307 p = xdr_inline_decode(xdr, 4); 3308 if (unlikely(!p)) 3309 goto out_overflow; 3310 *res = be32_to_cpup(p); 3311 bitmap[0] &= ~FATTR4_WORD0_LEASE_TIME; 3312 } 3313 dprintk("%s: file size=%u\n", __func__, (unsigned int)*res); 3314 return 0; 3315 out_overflow: 3316 print_overflow_msg(__func__, xdr); 3317 return -EIO; 3318 } 3319 3320 static int decode_attr_error(struct xdr_stream *xdr, uint32_t *bitmap, int32_t *res) 3321 { 3322 __be32 *p; 3323 3324 if (unlikely(bitmap[0] & (FATTR4_WORD0_RDATTR_ERROR - 1U))) 3325 return -EIO; 3326 if (likely(bitmap[0] & FATTR4_WORD0_RDATTR_ERROR)) { 3327 p = xdr_inline_decode(xdr, 4); 3328 if (unlikely(!p)) 3329 goto out_overflow; 3330 bitmap[0] &= ~FATTR4_WORD0_RDATTR_ERROR; 3331 *res = -be32_to_cpup(p); 3332 } 3333 return 0; 3334 out_overflow: 3335 print_overflow_msg(__func__, xdr); 3336 return -EIO; 3337 } 3338 3339 static int decode_attr_filehandle(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fh *fh) 3340 { 3341 __be32 *p; 3342 int len; 3343 3344 if (fh != NULL) 3345 memset(fh, 0, sizeof(*fh)); 3346 3347 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEHANDLE - 1U))) 3348 return -EIO; 3349 if (likely(bitmap[0] & FATTR4_WORD0_FILEHANDLE)) { 3350 p = xdr_inline_decode(xdr, 4); 3351 if (unlikely(!p)) 3352 goto out_overflow; 3353 len = be32_to_cpup(p); 3354 if (len > NFS4_FHSIZE) 3355 return -EIO; 3356 p = xdr_inline_decode(xdr, len); 3357 if (unlikely(!p)) 3358 goto out_overflow; 3359 if (fh != NULL) { 3360 memcpy(fh->data, p, len); 3361 fh->size = len; 3362 } 3363 bitmap[0] &= ~FATTR4_WORD0_FILEHANDLE; 3364 } 3365 return 0; 3366 out_overflow: 3367 print_overflow_msg(__func__, xdr); 3368 return -EIO; 3369 } 3370 3371 static int decode_attr_aclsupport(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) 3372 { 3373 __be32 *p; 3374 3375 *res = ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL; 3376 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACLSUPPORT - 1U))) 3377 return -EIO; 3378 if (likely(bitmap[0] & FATTR4_WORD0_ACLSUPPORT)) { 3379 p = xdr_inline_decode(xdr, 4); 3380 if (unlikely(!p)) 3381 goto out_overflow; 3382 *res = be32_to_cpup(p); 3383 bitmap[0] &= ~FATTR4_WORD0_ACLSUPPORT; 3384 } 3385 dprintk("%s: ACLs supported=%u\n", __func__, (unsigned int)*res); 3386 return 0; 3387 out_overflow: 3388 print_overflow_msg(__func__, xdr); 3389 return -EIO; 3390 } 3391 3392 static int decode_attr_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid) 3393 { 3394 __be32 *p; 3395 int ret = 0; 3396 3397 *fileid = 0; 3398 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEID - 1U))) 3399 return -EIO; 3400 if (likely(bitmap[0] & FATTR4_WORD0_FILEID)) { 3401 p = xdr_inline_decode(xdr, 8); 3402 if (unlikely(!p)) 3403 goto out_overflow; 3404 xdr_decode_hyper(p, fileid); 3405 bitmap[0] &= ~FATTR4_WORD0_FILEID; 3406 ret = NFS_ATTR_FATTR_FILEID; 3407 } 3408 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid); 3409 return ret; 3410 out_overflow: 3411 print_overflow_msg(__func__, xdr); 3412 return -EIO; 3413 } 3414 3415 static int decode_attr_mounted_on_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid) 3416 { 3417 __be32 *p; 3418 int ret = 0; 3419 3420 *fileid = 0; 3421 if (unlikely(bitmap[1] & (FATTR4_WORD1_MOUNTED_ON_FILEID - 1U))) 3422 return -EIO; 3423 if (likely(bitmap[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)) { 3424 p = xdr_inline_decode(xdr, 8); 3425 if (unlikely(!p)) 3426 goto out_overflow; 3427 xdr_decode_hyper(p, fileid); 3428 bitmap[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID; 3429 ret = NFS_ATTR_FATTR_MOUNTED_ON_FILEID; 3430 } 3431 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid); 3432 return ret; 3433 out_overflow: 3434 print_overflow_msg(__func__, xdr); 3435 return -EIO; 3436 } 3437 3438 static int decode_attr_files_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 3439 { 3440 __be32 *p; 3441 int status = 0; 3442 3443 *res = 0; 3444 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_AVAIL - 1U))) 3445 return -EIO; 3446 if (likely(bitmap[0] & FATTR4_WORD0_FILES_AVAIL)) { 3447 p = xdr_inline_decode(xdr, 8); 3448 if (unlikely(!p)) 3449 goto out_overflow; 3450 xdr_decode_hyper(p, res); 3451 bitmap[0] &= ~FATTR4_WORD0_FILES_AVAIL; 3452 } 3453 dprintk("%s: files avail=%Lu\n", __func__, (unsigned long long)*res); 3454 return status; 3455 out_overflow: 3456 print_overflow_msg(__func__, xdr); 3457 return -EIO; 3458 } 3459 3460 static int decode_attr_files_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 3461 { 3462 __be32 *p; 3463 int status = 0; 3464 3465 *res = 0; 3466 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_FREE - 1U))) 3467 return -EIO; 3468 if (likely(bitmap[0] & FATTR4_WORD0_FILES_FREE)) { 3469 p = xdr_inline_decode(xdr, 8); 3470 if (unlikely(!p)) 3471 goto out_overflow; 3472 xdr_decode_hyper(p, res); 3473 bitmap[0] &= ~FATTR4_WORD0_FILES_FREE; 3474 } 3475 dprintk("%s: files free=%Lu\n", __func__, (unsigned long long)*res); 3476 return status; 3477 out_overflow: 3478 print_overflow_msg(__func__, xdr); 3479 return -EIO; 3480 } 3481 3482 static int decode_attr_files_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 3483 { 3484 __be32 *p; 3485 int status = 0; 3486 3487 *res = 0; 3488 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_TOTAL - 1U))) 3489 return -EIO; 3490 if (likely(bitmap[0] & FATTR4_WORD0_FILES_TOTAL)) { 3491 p = xdr_inline_decode(xdr, 8); 3492 if (unlikely(!p)) 3493 goto out_overflow; 3494 xdr_decode_hyper(p, res); 3495 bitmap[0] &= ~FATTR4_WORD0_FILES_TOTAL; 3496 } 3497 dprintk("%s: files total=%Lu\n", __func__, (unsigned long long)*res); 3498 return status; 3499 out_overflow: 3500 print_overflow_msg(__func__, xdr); 3501 return -EIO; 3502 } 3503 3504 static int decode_pathname(struct xdr_stream *xdr, struct nfs4_pathname *path) 3505 { 3506 u32 n; 3507 __be32 *p; 3508 int status = 0; 3509 3510 p = xdr_inline_decode(xdr, 4); 3511 if (unlikely(!p)) 3512 goto out_overflow; 3513 n = be32_to_cpup(p); 3514 if (n == 0) 3515 goto root_path; 3516 dprintk("path "); 3517 path->ncomponents = 0; 3518 while (path->ncomponents < n) { 3519 struct nfs4_string *component = &path->components[path->ncomponents]; 3520 status = decode_opaque_inline(xdr, &component->len, &component->data); 3521 if (unlikely(status != 0)) 3522 goto out_eio; 3523 if (path->ncomponents != n) 3524 dprintk("/"); 3525 dprintk("%s", component->data); 3526 if (path->ncomponents < NFS4_PATHNAME_MAXCOMPONENTS) 3527 path->ncomponents++; 3528 else { 3529 dprintk("cannot parse %d components in path\n", n); 3530 goto out_eio; 3531 } 3532 } 3533 out: 3534 dprintk("\n"); 3535 return status; 3536 root_path: 3537 /* a root pathname is sent as a zero component4 */ 3538 path->ncomponents = 1; 3539 path->components[0].len=0; 3540 path->components[0].data=NULL; 3541 dprintk("path /\n"); 3542 goto out; 3543 out_eio: 3544 dprintk(" status %d", status); 3545 status = -EIO; 3546 goto out; 3547 out_overflow: 3548 print_overflow_msg(__func__, xdr); 3549 return -EIO; 3550 } 3551 3552 static int decode_attr_fs_locations(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_fs_locations *res) 3553 { 3554 int n; 3555 __be32 *p; 3556 int status = -EIO; 3557 3558 if (unlikely(bitmap[0] & (FATTR4_WORD0_FS_LOCATIONS -1U))) 3559 goto out; 3560 status = 0; 3561 if (unlikely(!(bitmap[0] & FATTR4_WORD0_FS_LOCATIONS))) 3562 goto out; 3563 dprintk("%s: fsroot ", __func__); 3564 status = decode_pathname(xdr, &res->fs_path); 3565 if (unlikely(status != 0)) 3566 goto out; 3567 p = xdr_inline_decode(xdr, 4); 3568 if (unlikely(!p)) 3569 goto out_overflow; 3570 n = be32_to_cpup(p); 3571 if (n <= 0) 3572 goto out_eio; 3573 res->nlocations = 0; 3574 while (res->nlocations < n) { 3575 u32 m; 3576 struct nfs4_fs_location *loc = &res->locations[res->nlocations]; 3577 3578 p = xdr_inline_decode(xdr, 4); 3579 if (unlikely(!p)) 3580 goto out_overflow; 3581 m = be32_to_cpup(p); 3582 3583 loc->nservers = 0; 3584 dprintk("%s: servers ", __func__); 3585 while (loc->nservers < m) { 3586 struct nfs4_string *server = &loc->servers[loc->nservers]; 3587 status = decode_opaque_inline(xdr, &server->len, &server->data); 3588 if (unlikely(status != 0)) 3589 goto out_eio; 3590 dprintk("%s ", server->data); 3591 if (loc->nservers < NFS4_FS_LOCATION_MAXSERVERS) 3592 loc->nservers++; 3593 else { 3594 unsigned int i; 3595 dprintk("%s: using first %u of %u servers " 3596 "returned for location %u\n", 3597 __func__, 3598 NFS4_FS_LOCATION_MAXSERVERS, 3599 m, res->nlocations); 3600 for (i = loc->nservers; i < m; i++) { 3601 unsigned int len; 3602 char *data; 3603 status = decode_opaque_inline(xdr, &len, &data); 3604 if (unlikely(status != 0)) 3605 goto out_eio; 3606 } 3607 } 3608 } 3609 status = decode_pathname(xdr, &loc->rootpath); 3610 if (unlikely(status != 0)) 3611 goto out_eio; 3612 if (res->nlocations < NFS4_FS_LOCATIONS_MAXENTRIES) 3613 res->nlocations++; 3614 } 3615 if (res->nlocations != 0) 3616 status = NFS_ATTR_FATTR_V4_REFERRAL; 3617 out: 3618 dprintk("%s: fs_locations done, error = %d\n", __func__, status); 3619 return status; 3620 out_overflow: 3621 print_overflow_msg(__func__, xdr); 3622 out_eio: 3623 status = -EIO; 3624 goto out; 3625 } 3626 3627 static int decode_attr_maxfilesize(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 3628 { 3629 __be32 *p; 3630 int status = 0; 3631 3632 *res = 0; 3633 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXFILESIZE - 1U))) 3634 return -EIO; 3635 if (likely(bitmap[0] & FATTR4_WORD0_MAXFILESIZE)) { 3636 p = xdr_inline_decode(xdr, 8); 3637 if (unlikely(!p)) 3638 goto out_overflow; 3639 xdr_decode_hyper(p, res); 3640 bitmap[0] &= ~FATTR4_WORD0_MAXFILESIZE; 3641 } 3642 dprintk("%s: maxfilesize=%Lu\n", __func__, (unsigned long long)*res); 3643 return status; 3644 out_overflow: 3645 print_overflow_msg(__func__, xdr); 3646 return -EIO; 3647 } 3648 3649 static int decode_attr_maxlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxlink) 3650 { 3651 __be32 *p; 3652 int status = 0; 3653 3654 *maxlink = 1; 3655 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXLINK - 1U))) 3656 return -EIO; 3657 if (likely(bitmap[0] & FATTR4_WORD0_MAXLINK)) { 3658 p = xdr_inline_decode(xdr, 4); 3659 if (unlikely(!p)) 3660 goto out_overflow; 3661 *maxlink = be32_to_cpup(p); 3662 bitmap[0] &= ~FATTR4_WORD0_MAXLINK; 3663 } 3664 dprintk("%s: maxlink=%u\n", __func__, *maxlink); 3665 return status; 3666 out_overflow: 3667 print_overflow_msg(__func__, xdr); 3668 return -EIO; 3669 } 3670 3671 static int decode_attr_maxname(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxname) 3672 { 3673 __be32 *p; 3674 int status = 0; 3675 3676 *maxname = 1024; 3677 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXNAME - 1U))) 3678 return -EIO; 3679 if (likely(bitmap[0] & FATTR4_WORD0_MAXNAME)) { 3680 p = xdr_inline_decode(xdr, 4); 3681 if (unlikely(!p)) 3682 goto out_overflow; 3683 *maxname = be32_to_cpup(p); 3684 bitmap[0] &= ~FATTR4_WORD0_MAXNAME; 3685 } 3686 dprintk("%s: maxname=%u\n", __func__, *maxname); 3687 return status; 3688 out_overflow: 3689 print_overflow_msg(__func__, xdr); 3690 return -EIO; 3691 } 3692 3693 static int decode_attr_maxread(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) 3694 { 3695 __be32 *p; 3696 int status = 0; 3697 3698 *res = 1024; 3699 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXREAD - 1U))) 3700 return -EIO; 3701 if (likely(bitmap[0] & FATTR4_WORD0_MAXREAD)) { 3702 uint64_t maxread; 3703 p = xdr_inline_decode(xdr, 8); 3704 if (unlikely(!p)) 3705 goto out_overflow; 3706 xdr_decode_hyper(p, &maxread); 3707 if (maxread > 0x7FFFFFFF) 3708 maxread = 0x7FFFFFFF; 3709 *res = (uint32_t)maxread; 3710 bitmap[0] &= ~FATTR4_WORD0_MAXREAD; 3711 } 3712 dprintk("%s: maxread=%lu\n", __func__, (unsigned long)*res); 3713 return status; 3714 out_overflow: 3715 print_overflow_msg(__func__, xdr); 3716 return -EIO; 3717 } 3718 3719 static int decode_attr_maxwrite(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) 3720 { 3721 __be32 *p; 3722 int status = 0; 3723 3724 *res = 1024; 3725 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXWRITE - 1U))) 3726 return -EIO; 3727 if (likely(bitmap[0] & FATTR4_WORD0_MAXWRITE)) { 3728 uint64_t maxwrite; 3729 p = xdr_inline_decode(xdr, 8); 3730 if (unlikely(!p)) 3731 goto out_overflow; 3732 xdr_decode_hyper(p, &maxwrite); 3733 if (maxwrite > 0x7FFFFFFF) 3734 maxwrite = 0x7FFFFFFF; 3735 *res = (uint32_t)maxwrite; 3736 bitmap[0] &= ~FATTR4_WORD0_MAXWRITE; 3737 } 3738 dprintk("%s: maxwrite=%lu\n", __func__, (unsigned long)*res); 3739 return status; 3740 out_overflow: 3741 print_overflow_msg(__func__, xdr); 3742 return -EIO; 3743 } 3744 3745 static int decode_attr_mode(struct xdr_stream *xdr, uint32_t *bitmap, umode_t *mode) 3746 { 3747 uint32_t tmp; 3748 __be32 *p; 3749 int ret = 0; 3750 3751 *mode = 0; 3752 if (unlikely(bitmap[1] & (FATTR4_WORD1_MODE - 1U))) 3753 return -EIO; 3754 if (likely(bitmap[1] & FATTR4_WORD1_MODE)) { 3755 p = xdr_inline_decode(xdr, 4); 3756 if (unlikely(!p)) 3757 goto out_overflow; 3758 tmp = be32_to_cpup(p); 3759 *mode = tmp & ~S_IFMT; 3760 bitmap[1] &= ~FATTR4_WORD1_MODE; 3761 ret = NFS_ATTR_FATTR_MODE; 3762 } 3763 dprintk("%s: file mode=0%o\n", __func__, (unsigned int)*mode); 3764 return ret; 3765 out_overflow: 3766 print_overflow_msg(__func__, xdr); 3767 return -EIO; 3768 } 3769 3770 static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *nlink) 3771 { 3772 __be32 *p; 3773 int ret = 0; 3774 3775 *nlink = 1; 3776 if (unlikely(bitmap[1] & (FATTR4_WORD1_NUMLINKS - 1U))) 3777 return -EIO; 3778 if (likely(bitmap[1] & FATTR4_WORD1_NUMLINKS)) { 3779 p = xdr_inline_decode(xdr, 4); 3780 if (unlikely(!p)) 3781 goto out_overflow; 3782 *nlink = be32_to_cpup(p); 3783 bitmap[1] &= ~FATTR4_WORD1_NUMLINKS; 3784 ret = NFS_ATTR_FATTR_NLINK; 3785 } 3786 dprintk("%s: nlink=%u\n", __func__, (unsigned int)*nlink); 3787 return ret; 3788 out_overflow: 3789 print_overflow_msg(__func__, xdr); 3790 return -EIO; 3791 } 3792 3793 static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap, 3794 const struct nfs_server *server, uint32_t *uid, 3795 struct nfs4_string *owner_name) 3796 { 3797 uint32_t len; 3798 __be32 *p; 3799 int ret = 0; 3800 3801 *uid = -2; 3802 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER - 1U))) 3803 return -EIO; 3804 if (likely(bitmap[1] & FATTR4_WORD1_OWNER)) { 3805 p = xdr_inline_decode(xdr, 4); 3806 if (unlikely(!p)) 3807 goto out_overflow; 3808 len = be32_to_cpup(p); 3809 p = xdr_inline_decode(xdr, len); 3810 if (unlikely(!p)) 3811 goto out_overflow; 3812 if (owner_name != NULL) { 3813 owner_name->data = kmemdup(p, len, GFP_NOWAIT); 3814 if (owner_name->data != NULL) { 3815 owner_name->len = len; 3816 ret = NFS_ATTR_FATTR_OWNER_NAME; 3817 } 3818 } else if (len < XDR_MAX_NETOBJ) { 3819 if (nfs_map_name_to_uid(server, (char *)p, len, uid) == 0) 3820 ret = NFS_ATTR_FATTR_OWNER; 3821 else 3822 dprintk("%s: nfs_map_name_to_uid failed!\n", 3823 __func__); 3824 } else 3825 dprintk("%s: name too long (%u)!\n", 3826 __func__, len); 3827 bitmap[1] &= ~FATTR4_WORD1_OWNER; 3828 } 3829 dprintk("%s: uid=%d\n", __func__, (int)*uid); 3830 return ret; 3831 out_overflow: 3832 print_overflow_msg(__func__, xdr); 3833 return -EIO; 3834 } 3835 3836 static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap, 3837 const struct nfs_server *server, uint32_t *gid, 3838 struct nfs4_string *group_name) 3839 { 3840 uint32_t len; 3841 __be32 *p; 3842 int ret = 0; 3843 3844 *gid = -2; 3845 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER_GROUP - 1U))) 3846 return -EIO; 3847 if (likely(bitmap[1] & FATTR4_WORD1_OWNER_GROUP)) { 3848 p = xdr_inline_decode(xdr, 4); 3849 if (unlikely(!p)) 3850 goto out_overflow; 3851 len = be32_to_cpup(p); 3852 p = xdr_inline_decode(xdr, len); 3853 if (unlikely(!p)) 3854 goto out_overflow; 3855 if (group_name != NULL) { 3856 group_name->data = kmemdup(p, len, GFP_NOWAIT); 3857 if (group_name->data != NULL) { 3858 group_name->len = len; 3859 ret = NFS_ATTR_FATTR_GROUP_NAME; 3860 } 3861 } else if (len < XDR_MAX_NETOBJ) { 3862 if (nfs_map_group_to_gid(server, (char *)p, len, gid) == 0) 3863 ret = NFS_ATTR_FATTR_GROUP; 3864 else 3865 dprintk("%s: nfs_map_group_to_gid failed!\n", 3866 __func__); 3867 } else 3868 dprintk("%s: name too long (%u)!\n", 3869 __func__, len); 3870 bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP; 3871 } 3872 dprintk("%s: gid=%d\n", __func__, (int)*gid); 3873 return ret; 3874 out_overflow: 3875 print_overflow_msg(__func__, xdr); 3876 return -EIO; 3877 } 3878 3879 static int decode_attr_rdev(struct xdr_stream *xdr, uint32_t *bitmap, dev_t *rdev) 3880 { 3881 uint32_t major = 0, minor = 0; 3882 __be32 *p; 3883 int ret = 0; 3884 3885 *rdev = MKDEV(0,0); 3886 if (unlikely(bitmap[1] & (FATTR4_WORD1_RAWDEV - 1U))) 3887 return -EIO; 3888 if (likely(bitmap[1] & FATTR4_WORD1_RAWDEV)) { 3889 dev_t tmp; 3890 3891 p = xdr_inline_decode(xdr, 8); 3892 if (unlikely(!p)) 3893 goto out_overflow; 3894 major = be32_to_cpup(p++); 3895 minor = be32_to_cpup(p); 3896 tmp = MKDEV(major, minor); 3897 if (MAJOR(tmp) == major && MINOR(tmp) == minor) 3898 *rdev = tmp; 3899 bitmap[1] &= ~ FATTR4_WORD1_RAWDEV; 3900 ret = NFS_ATTR_FATTR_RDEV; 3901 } 3902 dprintk("%s: rdev=(0x%x:0x%x)\n", __func__, major, minor); 3903 return ret; 3904 out_overflow: 3905 print_overflow_msg(__func__, xdr); 3906 return -EIO; 3907 } 3908 3909 static int decode_attr_space_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 3910 { 3911 __be32 *p; 3912 int status = 0; 3913 3914 *res = 0; 3915 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_AVAIL - 1U))) 3916 return -EIO; 3917 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_AVAIL)) { 3918 p = xdr_inline_decode(xdr, 8); 3919 if (unlikely(!p)) 3920 goto out_overflow; 3921 xdr_decode_hyper(p, res); 3922 bitmap[1] &= ~FATTR4_WORD1_SPACE_AVAIL; 3923 } 3924 dprintk("%s: space avail=%Lu\n", __func__, (unsigned long long)*res); 3925 return status; 3926 out_overflow: 3927 print_overflow_msg(__func__, xdr); 3928 return -EIO; 3929 } 3930 3931 static int decode_attr_space_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 3932 { 3933 __be32 *p; 3934 int status = 0; 3935 3936 *res = 0; 3937 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_FREE - 1U))) 3938 return -EIO; 3939 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_FREE)) { 3940 p = xdr_inline_decode(xdr, 8); 3941 if (unlikely(!p)) 3942 goto out_overflow; 3943 xdr_decode_hyper(p, res); 3944 bitmap[1] &= ~FATTR4_WORD1_SPACE_FREE; 3945 } 3946 dprintk("%s: space free=%Lu\n", __func__, (unsigned long long)*res); 3947 return status; 3948 out_overflow: 3949 print_overflow_msg(__func__, xdr); 3950 return -EIO; 3951 } 3952 3953 static int decode_attr_space_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 3954 { 3955 __be32 *p; 3956 int status = 0; 3957 3958 *res = 0; 3959 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_TOTAL - 1U))) 3960 return -EIO; 3961 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_TOTAL)) { 3962 p = xdr_inline_decode(xdr, 8); 3963 if (unlikely(!p)) 3964 goto out_overflow; 3965 xdr_decode_hyper(p, res); 3966 bitmap[1] &= ~FATTR4_WORD1_SPACE_TOTAL; 3967 } 3968 dprintk("%s: space total=%Lu\n", __func__, (unsigned long long)*res); 3969 return status; 3970 out_overflow: 3971 print_overflow_msg(__func__, xdr); 3972 return -EIO; 3973 } 3974 3975 static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *used) 3976 { 3977 __be32 *p; 3978 int ret = 0; 3979 3980 *used = 0; 3981 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_USED - 1U))) 3982 return -EIO; 3983 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_USED)) { 3984 p = xdr_inline_decode(xdr, 8); 3985 if (unlikely(!p)) 3986 goto out_overflow; 3987 xdr_decode_hyper(p, used); 3988 bitmap[1] &= ~FATTR4_WORD1_SPACE_USED; 3989 ret = NFS_ATTR_FATTR_SPACE_USED; 3990 } 3991 dprintk("%s: space used=%Lu\n", __func__, 3992 (unsigned long long)*used); 3993 return ret; 3994 out_overflow: 3995 print_overflow_msg(__func__, xdr); 3996 return -EIO; 3997 } 3998 3999 static int decode_attr_time(struct xdr_stream *xdr, struct timespec *time) 4000 { 4001 __be32 *p; 4002 uint64_t sec; 4003 uint32_t nsec; 4004 4005 p = xdr_inline_decode(xdr, 12); 4006 if (unlikely(!p)) 4007 goto out_overflow; 4008 p = xdr_decode_hyper(p, &sec); 4009 nsec = be32_to_cpup(p); 4010 time->tv_sec = (time_t)sec; 4011 time->tv_nsec = (long)nsec; 4012 return 0; 4013 out_overflow: 4014 print_overflow_msg(__func__, xdr); 4015 return -EIO; 4016 } 4017 4018 static int decode_attr_time_access(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time) 4019 { 4020 int status = 0; 4021 4022 time->tv_sec = 0; 4023 time->tv_nsec = 0; 4024 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_ACCESS - 1U))) 4025 return -EIO; 4026 if (likely(bitmap[1] & FATTR4_WORD1_TIME_ACCESS)) { 4027 status = decode_attr_time(xdr, time); 4028 if (status == 0) 4029 status = NFS_ATTR_FATTR_ATIME; 4030 bitmap[1] &= ~FATTR4_WORD1_TIME_ACCESS; 4031 } 4032 dprintk("%s: atime=%ld\n", __func__, (long)time->tv_sec); 4033 return status; 4034 } 4035 4036 static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time) 4037 { 4038 int status = 0; 4039 4040 time->tv_sec = 0; 4041 time->tv_nsec = 0; 4042 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_METADATA - 1U))) 4043 return -EIO; 4044 if (likely(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) { 4045 status = decode_attr_time(xdr, time); 4046 if (status == 0) 4047 status = NFS_ATTR_FATTR_CTIME; 4048 bitmap[1] &= ~FATTR4_WORD1_TIME_METADATA; 4049 } 4050 dprintk("%s: ctime=%ld\n", __func__, (long)time->tv_sec); 4051 return status; 4052 } 4053 4054 static int decode_attr_time_delta(struct xdr_stream *xdr, uint32_t *bitmap, 4055 struct timespec *time) 4056 { 4057 int status = 0; 4058 4059 time->tv_sec = 0; 4060 time->tv_nsec = 0; 4061 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_DELTA - 1U))) 4062 return -EIO; 4063 if (likely(bitmap[1] & FATTR4_WORD1_TIME_DELTA)) { 4064 status = decode_attr_time(xdr, time); 4065 bitmap[1] &= ~FATTR4_WORD1_TIME_DELTA; 4066 } 4067 dprintk("%s: time_delta=%ld %ld\n", __func__, (long)time->tv_sec, 4068 (long)time->tv_nsec); 4069 return status; 4070 } 4071 4072 static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time) 4073 { 4074 int status = 0; 4075 4076 time->tv_sec = 0; 4077 time->tv_nsec = 0; 4078 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_MODIFY - 1U))) 4079 return -EIO; 4080 if (likely(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) { 4081 status = decode_attr_time(xdr, time); 4082 if (status == 0) 4083 status = NFS_ATTR_FATTR_MTIME; 4084 bitmap[1] &= ~FATTR4_WORD1_TIME_MODIFY; 4085 } 4086 dprintk("%s: mtime=%ld\n", __func__, (long)time->tv_sec); 4087 return status; 4088 } 4089 4090 static int verify_attr_len(struct xdr_stream *xdr, __be32 *savep, uint32_t attrlen) 4091 { 4092 unsigned int attrwords = XDR_QUADLEN(attrlen); 4093 unsigned int nwords = xdr->p - savep; 4094 4095 if (unlikely(attrwords != nwords)) { 4096 dprintk("%s: server returned incorrect attribute length: " 4097 "%u %c %u\n", 4098 __func__, 4099 attrwords << 2, 4100 (attrwords < nwords) ? '<' : '>', 4101 nwords << 2); 4102 return -EIO; 4103 } 4104 return 0; 4105 } 4106 4107 static int decode_change_info(struct xdr_stream *xdr, struct nfs4_change_info *cinfo) 4108 { 4109 __be32 *p; 4110 4111 p = xdr_inline_decode(xdr, 20); 4112 if (unlikely(!p)) 4113 goto out_overflow; 4114 cinfo->atomic = be32_to_cpup(p++); 4115 p = xdr_decode_hyper(p, &cinfo->before); 4116 xdr_decode_hyper(p, &cinfo->after); 4117 return 0; 4118 out_overflow: 4119 print_overflow_msg(__func__, xdr); 4120 return -EIO; 4121 } 4122 4123 static int decode_access(struct xdr_stream *xdr, struct nfs4_accessres *access) 4124 { 4125 __be32 *p; 4126 uint32_t supp, acc; 4127 int status; 4128 4129 status = decode_op_hdr(xdr, OP_ACCESS); 4130 if (status) 4131 return status; 4132 p = xdr_inline_decode(xdr, 8); 4133 if (unlikely(!p)) 4134 goto out_overflow; 4135 supp = be32_to_cpup(p++); 4136 acc = be32_to_cpup(p); 4137 access->supported = supp; 4138 access->access = acc; 4139 return 0; 4140 out_overflow: 4141 print_overflow_msg(__func__, xdr); 4142 return -EIO; 4143 } 4144 4145 static int decode_opaque_fixed(struct xdr_stream *xdr, void *buf, size_t len) 4146 { 4147 __be32 *p; 4148 4149 p = xdr_inline_decode(xdr, len); 4150 if (likely(p)) { 4151 memcpy(buf, p, len); 4152 return 0; 4153 } 4154 print_overflow_msg(__func__, xdr); 4155 return -EIO; 4156 } 4157 4158 static int decode_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid) 4159 { 4160 return decode_opaque_fixed(xdr, stateid->data, NFS4_STATEID_SIZE); 4161 } 4162 4163 static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res) 4164 { 4165 int status; 4166 4167 status = decode_op_hdr(xdr, OP_CLOSE); 4168 if (status != -EIO) 4169 nfs_increment_open_seqid(status, res->seqid); 4170 if (!status) 4171 status = decode_stateid(xdr, &res->stateid); 4172 return status; 4173 } 4174 4175 static int decode_verifier(struct xdr_stream *xdr, void *verifier) 4176 { 4177 return decode_opaque_fixed(xdr, verifier, 8); 4178 } 4179 4180 static int decode_commit(struct xdr_stream *xdr, struct nfs_writeres *res) 4181 { 4182 int status; 4183 4184 status = decode_op_hdr(xdr, OP_COMMIT); 4185 if (!status) 4186 status = decode_verifier(xdr, res->verf->verifier); 4187 return status; 4188 } 4189 4190 static int decode_create(struct xdr_stream *xdr, struct nfs4_change_info *cinfo) 4191 { 4192 __be32 *p; 4193 uint32_t bmlen; 4194 int status; 4195 4196 status = decode_op_hdr(xdr, OP_CREATE); 4197 if (status) 4198 return status; 4199 if ((status = decode_change_info(xdr, cinfo))) 4200 return status; 4201 p = xdr_inline_decode(xdr, 4); 4202 if (unlikely(!p)) 4203 goto out_overflow; 4204 bmlen = be32_to_cpup(p); 4205 p = xdr_inline_decode(xdr, bmlen << 2); 4206 if (likely(p)) 4207 return 0; 4208 out_overflow: 4209 print_overflow_msg(__func__, xdr); 4210 return -EIO; 4211 } 4212 4213 static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_res *res) 4214 { 4215 __be32 *savep; 4216 uint32_t attrlen, bitmap[3] = {0}; 4217 int status; 4218 4219 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) 4220 goto xdr_error; 4221 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) 4222 goto xdr_error; 4223 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) 4224 goto xdr_error; 4225 if ((status = decode_attr_supported(xdr, bitmap, res->attr_bitmask)) != 0) 4226 goto xdr_error; 4227 if ((status = decode_attr_link_support(xdr, bitmap, &res->has_links)) != 0) 4228 goto xdr_error; 4229 if ((status = decode_attr_symlink_support(xdr, bitmap, &res->has_symlinks)) != 0) 4230 goto xdr_error; 4231 if ((status = decode_attr_aclsupport(xdr, bitmap, &res->acl_bitmask)) != 0) 4232 goto xdr_error; 4233 status = verify_attr_len(xdr, savep, attrlen); 4234 xdr_error: 4235 dprintk("%s: xdr returned %d!\n", __func__, -status); 4236 return status; 4237 } 4238 4239 static int decode_statfs(struct xdr_stream *xdr, struct nfs_fsstat *fsstat) 4240 { 4241 __be32 *savep; 4242 uint32_t attrlen, bitmap[3] = {0}; 4243 int status; 4244 4245 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) 4246 goto xdr_error; 4247 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) 4248 goto xdr_error; 4249 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) 4250 goto xdr_error; 4251 4252 if ((status = decode_attr_files_avail(xdr, bitmap, &fsstat->afiles)) != 0) 4253 goto xdr_error; 4254 if ((status = decode_attr_files_free(xdr, bitmap, &fsstat->ffiles)) != 0) 4255 goto xdr_error; 4256 if ((status = decode_attr_files_total(xdr, bitmap, &fsstat->tfiles)) != 0) 4257 goto xdr_error; 4258 if ((status = decode_attr_space_avail(xdr, bitmap, &fsstat->abytes)) != 0) 4259 goto xdr_error; 4260 if ((status = decode_attr_space_free(xdr, bitmap, &fsstat->fbytes)) != 0) 4261 goto xdr_error; 4262 if ((status = decode_attr_space_total(xdr, bitmap, &fsstat->tbytes)) != 0) 4263 goto xdr_error; 4264 4265 status = verify_attr_len(xdr, savep, attrlen); 4266 xdr_error: 4267 dprintk("%s: xdr returned %d!\n", __func__, -status); 4268 return status; 4269 } 4270 4271 static int decode_pathconf(struct xdr_stream *xdr, struct nfs_pathconf *pathconf) 4272 { 4273 __be32 *savep; 4274 uint32_t attrlen, bitmap[3] = {0}; 4275 int status; 4276 4277 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) 4278 goto xdr_error; 4279 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) 4280 goto xdr_error; 4281 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) 4282 goto xdr_error; 4283 4284 if ((status = decode_attr_maxlink(xdr, bitmap, &pathconf->max_link)) != 0) 4285 goto xdr_error; 4286 if ((status = decode_attr_maxname(xdr, bitmap, &pathconf->max_namelen)) != 0) 4287 goto xdr_error; 4288 4289 status = verify_attr_len(xdr, savep, attrlen); 4290 xdr_error: 4291 dprintk("%s: xdr returned %d!\n", __func__, -status); 4292 return status; 4293 } 4294 4295 static int decode_getfattr_attrs(struct xdr_stream *xdr, uint32_t *bitmap, 4296 struct nfs_fattr *fattr, struct nfs_fh *fh, 4297 const struct nfs_server *server) 4298 { 4299 int status; 4300 umode_t fmode = 0; 4301 uint32_t type; 4302 int32_t err; 4303 4304 status = decode_attr_type(xdr, bitmap, &type); 4305 if (status < 0) 4306 goto xdr_error; 4307 fattr->mode = 0; 4308 if (status != 0) { 4309 fattr->mode |= nfs_type2fmt[type]; 4310 fattr->valid |= status; 4311 } 4312 4313 status = decode_attr_change(xdr, bitmap, &fattr->change_attr); 4314 if (status < 0) 4315 goto xdr_error; 4316 fattr->valid |= status; 4317 4318 status = decode_attr_size(xdr, bitmap, &fattr->size); 4319 if (status < 0) 4320 goto xdr_error; 4321 fattr->valid |= status; 4322 4323 status = decode_attr_fsid(xdr, bitmap, &fattr->fsid); 4324 if (status < 0) 4325 goto xdr_error; 4326 fattr->valid |= status; 4327 4328 err = 0; 4329 status = decode_attr_error(xdr, bitmap, &err); 4330 if (status < 0) 4331 goto xdr_error; 4332 if (err == -NFS4ERR_WRONGSEC) 4333 nfs_fixup_secinfo_attributes(fattr, fh); 4334 4335 status = decode_attr_filehandle(xdr, bitmap, fh); 4336 if (status < 0) 4337 goto xdr_error; 4338 4339 status = decode_attr_fileid(xdr, bitmap, &fattr->fileid); 4340 if (status < 0) 4341 goto xdr_error; 4342 fattr->valid |= status; 4343 4344 status = decode_attr_fs_locations(xdr, bitmap, container_of(fattr, 4345 struct nfs4_fs_locations, 4346 fattr)); 4347 if (status < 0) 4348 goto xdr_error; 4349 fattr->valid |= status; 4350 4351 status = decode_attr_mode(xdr, bitmap, &fmode); 4352 if (status < 0) 4353 goto xdr_error; 4354 if (status != 0) { 4355 fattr->mode |= fmode; 4356 fattr->valid |= status; 4357 } 4358 4359 status = decode_attr_nlink(xdr, bitmap, &fattr->nlink); 4360 if (status < 0) 4361 goto xdr_error; 4362 fattr->valid |= status; 4363 4364 status = decode_attr_owner(xdr, bitmap, server, &fattr->uid, fattr->owner_name); 4365 if (status < 0) 4366 goto xdr_error; 4367 fattr->valid |= status; 4368 4369 status = decode_attr_group(xdr, bitmap, server, &fattr->gid, fattr->group_name); 4370 if (status < 0) 4371 goto xdr_error; 4372 fattr->valid |= status; 4373 4374 status = decode_attr_rdev(xdr, bitmap, &fattr->rdev); 4375 if (status < 0) 4376 goto xdr_error; 4377 fattr->valid |= status; 4378 4379 status = decode_attr_space_used(xdr, bitmap, &fattr->du.nfs3.used); 4380 if (status < 0) 4381 goto xdr_error; 4382 fattr->valid |= status; 4383 4384 status = decode_attr_time_access(xdr, bitmap, &fattr->atime); 4385 if (status < 0) 4386 goto xdr_error; 4387 fattr->valid |= status; 4388 4389 status = decode_attr_time_metadata(xdr, bitmap, &fattr->ctime); 4390 if (status < 0) 4391 goto xdr_error; 4392 fattr->valid |= status; 4393 4394 status = decode_attr_time_modify(xdr, bitmap, &fattr->mtime); 4395 if (status < 0) 4396 goto xdr_error; 4397 fattr->valid |= status; 4398 4399 status = decode_attr_mounted_on_fileid(xdr, bitmap, &fattr->mounted_on_fileid); 4400 if (status < 0) 4401 goto xdr_error; 4402 fattr->valid |= status; 4403 4404 xdr_error: 4405 dprintk("%s: xdr returned %d\n", __func__, -status); 4406 return status; 4407 } 4408 4409 static int decode_getfattr_generic(struct xdr_stream *xdr, struct nfs_fattr *fattr, 4410 struct nfs_fh *fh, const struct nfs_server *server) 4411 { 4412 __be32 *savep; 4413 uint32_t attrlen, 4414 bitmap[3] = {0}; 4415 int status; 4416 4417 status = decode_op_hdr(xdr, OP_GETATTR); 4418 if (status < 0) 4419 goto xdr_error; 4420 4421 status = decode_attr_bitmap(xdr, bitmap); 4422 if (status < 0) 4423 goto xdr_error; 4424 4425 status = decode_attr_length(xdr, &attrlen, &savep); 4426 if (status < 0) 4427 goto xdr_error; 4428 4429 status = decode_getfattr_attrs(xdr, bitmap, fattr, fh, server); 4430 if (status < 0) 4431 goto xdr_error; 4432 4433 status = verify_attr_len(xdr, savep, attrlen); 4434 xdr_error: 4435 dprintk("%s: xdr returned %d\n", __func__, -status); 4436 return status; 4437 } 4438 4439 static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr, 4440 const struct nfs_server *server) 4441 { 4442 return decode_getfattr_generic(xdr, fattr, NULL, server); 4443 } 4444 4445 /* 4446 * Decode potentially multiple layout types. Currently we only support 4447 * one layout driver per file system. 4448 */ 4449 static int decode_first_pnfs_layout_type(struct xdr_stream *xdr, 4450 uint32_t *layouttype) 4451 { 4452 uint32_t *p; 4453 int num; 4454 4455 p = xdr_inline_decode(xdr, 4); 4456 if (unlikely(!p)) 4457 goto out_overflow; 4458 num = be32_to_cpup(p); 4459 4460 /* pNFS is not supported by the underlying file system */ 4461 if (num == 0) { 4462 *layouttype = 0; 4463 return 0; 4464 } 4465 if (num > 1) 4466 printk(KERN_INFO "%s: Warning: Multiple pNFS layout drivers " 4467 "per filesystem not supported\n", __func__); 4468 4469 /* Decode and set first layout type, move xdr->p past unused types */ 4470 p = xdr_inline_decode(xdr, num * 4); 4471 if (unlikely(!p)) 4472 goto out_overflow; 4473 *layouttype = be32_to_cpup(p); 4474 return 0; 4475 out_overflow: 4476 print_overflow_msg(__func__, xdr); 4477 return -EIO; 4478 } 4479 4480 /* 4481 * The type of file system exported. 4482 * Note we must ensure that layouttype is set in any non-error case. 4483 */ 4484 static int decode_attr_pnfstype(struct xdr_stream *xdr, uint32_t *bitmap, 4485 uint32_t *layouttype) 4486 { 4487 int status = 0; 4488 4489 dprintk("%s: bitmap is %x\n", __func__, bitmap[1]); 4490 if (unlikely(bitmap[1] & (FATTR4_WORD1_FS_LAYOUT_TYPES - 1U))) 4491 return -EIO; 4492 if (bitmap[1] & FATTR4_WORD1_FS_LAYOUT_TYPES) { 4493 status = decode_first_pnfs_layout_type(xdr, layouttype); 4494 bitmap[1] &= ~FATTR4_WORD1_FS_LAYOUT_TYPES; 4495 } else 4496 *layouttype = 0; 4497 return status; 4498 } 4499 4500 /* 4501 * The prefered block size for layout directed io 4502 */ 4503 static int decode_attr_layout_blksize(struct xdr_stream *xdr, uint32_t *bitmap, 4504 uint32_t *res) 4505 { 4506 __be32 *p; 4507 4508 dprintk("%s: bitmap is %x\n", __func__, bitmap[2]); 4509 *res = 0; 4510 if (bitmap[2] & FATTR4_WORD2_LAYOUT_BLKSIZE) { 4511 p = xdr_inline_decode(xdr, 4); 4512 if (unlikely(!p)) { 4513 print_overflow_msg(__func__, xdr); 4514 return -EIO; 4515 } 4516 *res = be32_to_cpup(p); 4517 bitmap[2] &= ~FATTR4_WORD2_LAYOUT_BLKSIZE; 4518 } 4519 return 0; 4520 } 4521 4522 static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo) 4523 { 4524 __be32 *savep; 4525 uint32_t attrlen, bitmap[3]; 4526 int status; 4527 4528 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) 4529 goto xdr_error; 4530 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) 4531 goto xdr_error; 4532 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) 4533 goto xdr_error; 4534 4535 fsinfo->rtmult = fsinfo->wtmult = 512; /* ??? */ 4536 4537 if ((status = decode_attr_lease_time(xdr, bitmap, &fsinfo->lease_time)) != 0) 4538 goto xdr_error; 4539 if ((status = decode_attr_maxfilesize(xdr, bitmap, &fsinfo->maxfilesize)) != 0) 4540 goto xdr_error; 4541 if ((status = decode_attr_maxread(xdr, bitmap, &fsinfo->rtmax)) != 0) 4542 goto xdr_error; 4543 fsinfo->rtpref = fsinfo->dtpref = fsinfo->rtmax; 4544 if ((status = decode_attr_maxwrite(xdr, bitmap, &fsinfo->wtmax)) != 0) 4545 goto xdr_error; 4546 fsinfo->wtpref = fsinfo->wtmax; 4547 status = decode_attr_time_delta(xdr, bitmap, &fsinfo->time_delta); 4548 if (status != 0) 4549 goto xdr_error; 4550 status = decode_attr_pnfstype(xdr, bitmap, &fsinfo->layouttype); 4551 if (status != 0) 4552 goto xdr_error; 4553 status = decode_attr_layout_blksize(xdr, bitmap, &fsinfo->blksize); 4554 if (status) 4555 goto xdr_error; 4556 4557 status = verify_attr_len(xdr, savep, attrlen); 4558 xdr_error: 4559 dprintk("%s: xdr returned %d!\n", __func__, -status); 4560 return status; 4561 } 4562 4563 static int decode_getfh(struct xdr_stream *xdr, struct nfs_fh *fh) 4564 { 4565 __be32 *p; 4566 uint32_t len; 4567 int status; 4568 4569 /* Zero handle first to allow comparisons */ 4570 memset(fh, 0, sizeof(*fh)); 4571 4572 status = decode_op_hdr(xdr, OP_GETFH); 4573 if (status) 4574 return status; 4575 4576 p = xdr_inline_decode(xdr, 4); 4577 if (unlikely(!p)) 4578 goto out_overflow; 4579 len = be32_to_cpup(p); 4580 if (len > NFS4_FHSIZE) 4581 return -EIO; 4582 fh->size = len; 4583 p = xdr_inline_decode(xdr, len); 4584 if (unlikely(!p)) 4585 goto out_overflow; 4586 memcpy(fh->data, p, len); 4587 return 0; 4588 out_overflow: 4589 print_overflow_msg(__func__, xdr); 4590 return -EIO; 4591 } 4592 4593 static int decode_link(struct xdr_stream *xdr, struct nfs4_change_info *cinfo) 4594 { 4595 int status; 4596 4597 status = decode_op_hdr(xdr, OP_LINK); 4598 if (status) 4599 return status; 4600 return decode_change_info(xdr, cinfo); 4601 } 4602 4603 /* 4604 * We create the owner, so we know a proper owner.id length is 4. 4605 */ 4606 static int decode_lock_denied (struct xdr_stream *xdr, struct file_lock *fl) 4607 { 4608 uint64_t offset, length, clientid; 4609 __be32 *p; 4610 uint32_t namelen, type; 4611 4612 p = xdr_inline_decode(xdr, 32); /* read 32 bytes */ 4613 if (unlikely(!p)) 4614 goto out_overflow; 4615 p = xdr_decode_hyper(p, &offset); /* read 2 8-byte long words */ 4616 p = xdr_decode_hyper(p, &length); 4617 type = be32_to_cpup(p++); /* 4 byte read */ 4618 if (fl != NULL) { /* manipulate file lock */ 4619 fl->fl_start = (loff_t)offset; 4620 fl->fl_end = fl->fl_start + (loff_t)length - 1; 4621 if (length == ~(uint64_t)0) 4622 fl->fl_end = OFFSET_MAX; 4623 fl->fl_type = F_WRLCK; 4624 if (type & 1) 4625 fl->fl_type = F_RDLCK; 4626 fl->fl_pid = 0; 4627 } 4628 p = xdr_decode_hyper(p, &clientid); /* read 8 bytes */ 4629 namelen = be32_to_cpup(p); /* read 4 bytes */ /* have read all 32 bytes now */ 4630 p = xdr_inline_decode(xdr, namelen); /* variable size field */ 4631 if (likely(p)) 4632 return -NFS4ERR_DENIED; 4633 out_overflow: 4634 print_overflow_msg(__func__, xdr); 4635 return -EIO; 4636 } 4637 4638 static int decode_lock(struct xdr_stream *xdr, struct nfs_lock_res *res) 4639 { 4640 int status; 4641 4642 status = decode_op_hdr(xdr, OP_LOCK); 4643 if (status == -EIO) 4644 goto out; 4645 if (status == 0) { 4646 status = decode_stateid(xdr, &res->stateid); 4647 if (unlikely(status)) 4648 goto out; 4649 } else if (status == -NFS4ERR_DENIED) 4650 status = decode_lock_denied(xdr, NULL); 4651 if (res->open_seqid != NULL) 4652 nfs_increment_open_seqid(status, res->open_seqid); 4653 nfs_increment_lock_seqid(status, res->lock_seqid); 4654 out: 4655 return status; 4656 } 4657 4658 static int decode_lockt(struct xdr_stream *xdr, struct nfs_lockt_res *res) 4659 { 4660 int status; 4661 status = decode_op_hdr(xdr, OP_LOCKT); 4662 if (status == -NFS4ERR_DENIED) 4663 return decode_lock_denied(xdr, res->denied); 4664 return status; 4665 } 4666 4667 static int decode_locku(struct xdr_stream *xdr, struct nfs_locku_res *res) 4668 { 4669 int status; 4670 4671 status = decode_op_hdr(xdr, OP_LOCKU); 4672 if (status != -EIO) 4673 nfs_increment_lock_seqid(status, res->seqid); 4674 if (status == 0) 4675 status = decode_stateid(xdr, &res->stateid); 4676 return status; 4677 } 4678 4679 static int decode_release_lockowner(struct xdr_stream *xdr) 4680 { 4681 return decode_op_hdr(xdr, OP_RELEASE_LOCKOWNER); 4682 } 4683 4684 static int decode_lookup(struct xdr_stream *xdr) 4685 { 4686 return decode_op_hdr(xdr, OP_LOOKUP); 4687 } 4688 4689 /* This is too sick! */ 4690 static int decode_space_limit(struct xdr_stream *xdr, u64 *maxsize) 4691 { 4692 __be32 *p; 4693 uint32_t limit_type, nblocks, blocksize; 4694 4695 p = xdr_inline_decode(xdr, 12); 4696 if (unlikely(!p)) 4697 goto out_overflow; 4698 limit_type = be32_to_cpup(p++); 4699 switch (limit_type) { 4700 case 1: 4701 xdr_decode_hyper(p, maxsize); 4702 break; 4703 case 2: 4704 nblocks = be32_to_cpup(p++); 4705 blocksize = be32_to_cpup(p); 4706 *maxsize = (uint64_t)nblocks * (uint64_t)blocksize; 4707 } 4708 return 0; 4709 out_overflow: 4710 print_overflow_msg(__func__, xdr); 4711 return -EIO; 4712 } 4713 4714 static int decode_delegation(struct xdr_stream *xdr, struct nfs_openres *res) 4715 { 4716 __be32 *p; 4717 uint32_t delegation_type; 4718 int status; 4719 4720 p = xdr_inline_decode(xdr, 4); 4721 if (unlikely(!p)) 4722 goto out_overflow; 4723 delegation_type = be32_to_cpup(p); 4724 if (delegation_type == NFS4_OPEN_DELEGATE_NONE) { 4725 res->delegation_type = 0; 4726 return 0; 4727 } 4728 status = decode_stateid(xdr, &res->delegation); 4729 if (unlikely(status)) 4730 return status; 4731 p = xdr_inline_decode(xdr, 4); 4732 if (unlikely(!p)) 4733 goto out_overflow; 4734 res->do_recall = be32_to_cpup(p); 4735 4736 switch (delegation_type) { 4737 case NFS4_OPEN_DELEGATE_READ: 4738 res->delegation_type = FMODE_READ; 4739 break; 4740 case NFS4_OPEN_DELEGATE_WRITE: 4741 res->delegation_type = FMODE_WRITE|FMODE_READ; 4742 if (decode_space_limit(xdr, &res->maxsize) < 0) 4743 return -EIO; 4744 } 4745 return decode_ace(xdr, NULL, res->server->nfs_client); 4746 out_overflow: 4747 print_overflow_msg(__func__, xdr); 4748 return -EIO; 4749 } 4750 4751 static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res) 4752 { 4753 __be32 *p; 4754 uint32_t savewords, bmlen, i; 4755 int status; 4756 4757 status = decode_op_hdr(xdr, OP_OPEN); 4758 if (status != -EIO) 4759 nfs_increment_open_seqid(status, res->seqid); 4760 if (!status) 4761 status = decode_stateid(xdr, &res->stateid); 4762 if (unlikely(status)) 4763 return status; 4764 4765 decode_change_info(xdr, &res->cinfo); 4766 4767 p = xdr_inline_decode(xdr, 8); 4768 if (unlikely(!p)) 4769 goto out_overflow; 4770 res->rflags = be32_to_cpup(p++); 4771 bmlen = be32_to_cpup(p); 4772 if (bmlen > 10) 4773 goto xdr_error; 4774 4775 p = xdr_inline_decode(xdr, bmlen << 2); 4776 if (unlikely(!p)) 4777 goto out_overflow; 4778 savewords = min_t(uint32_t, bmlen, NFS4_BITMAP_SIZE); 4779 for (i = 0; i < savewords; ++i) 4780 res->attrset[i] = be32_to_cpup(p++); 4781 for (; i < NFS4_BITMAP_SIZE; i++) 4782 res->attrset[i] = 0; 4783 4784 return decode_delegation(xdr, res); 4785 xdr_error: 4786 dprintk("%s: Bitmap too large! Length = %u\n", __func__, bmlen); 4787 return -EIO; 4788 out_overflow: 4789 print_overflow_msg(__func__, xdr); 4790 return -EIO; 4791 } 4792 4793 static int decode_open_confirm(struct xdr_stream *xdr, struct nfs_open_confirmres *res) 4794 { 4795 int status; 4796 4797 status = decode_op_hdr(xdr, OP_OPEN_CONFIRM); 4798 if (status != -EIO) 4799 nfs_increment_open_seqid(status, res->seqid); 4800 if (!status) 4801 status = decode_stateid(xdr, &res->stateid); 4802 return status; 4803 } 4804 4805 static int decode_open_downgrade(struct xdr_stream *xdr, struct nfs_closeres *res) 4806 { 4807 int status; 4808 4809 status = decode_op_hdr(xdr, OP_OPEN_DOWNGRADE); 4810 if (status != -EIO) 4811 nfs_increment_open_seqid(status, res->seqid); 4812 if (!status) 4813 status = decode_stateid(xdr, &res->stateid); 4814 return status; 4815 } 4816 4817 static int decode_putfh(struct xdr_stream *xdr) 4818 { 4819 return decode_op_hdr(xdr, OP_PUTFH); 4820 } 4821 4822 static int decode_putrootfh(struct xdr_stream *xdr) 4823 { 4824 return decode_op_hdr(xdr, OP_PUTROOTFH); 4825 } 4826 4827 static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs_readres *res) 4828 { 4829 struct kvec *iov = req->rq_rcv_buf.head; 4830 __be32 *p; 4831 uint32_t count, eof, recvd, hdrlen; 4832 int status; 4833 4834 status = decode_op_hdr(xdr, OP_READ); 4835 if (status) 4836 return status; 4837 p = xdr_inline_decode(xdr, 8); 4838 if (unlikely(!p)) 4839 goto out_overflow; 4840 eof = be32_to_cpup(p++); 4841 count = be32_to_cpup(p); 4842 hdrlen = (u8 *) xdr->p - (u8 *) iov->iov_base; 4843 recvd = req->rq_rcv_buf.len - hdrlen; 4844 if (count > recvd) { 4845 dprintk("NFS: server cheating in read reply: " 4846 "count %u > recvd %u\n", count, recvd); 4847 count = recvd; 4848 eof = 0; 4849 } 4850 xdr_read_pages(xdr, count); 4851 res->eof = eof; 4852 res->count = count; 4853 return 0; 4854 out_overflow: 4855 print_overflow_msg(__func__, xdr); 4856 return -EIO; 4857 } 4858 4859 static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs4_readdir_res *readdir) 4860 { 4861 struct xdr_buf *rcvbuf = &req->rq_rcv_buf; 4862 struct kvec *iov = rcvbuf->head; 4863 size_t hdrlen; 4864 u32 recvd, pglen = rcvbuf->page_len; 4865 int status; 4866 4867 status = decode_op_hdr(xdr, OP_READDIR); 4868 if (!status) 4869 status = decode_verifier(xdr, readdir->verifier.data); 4870 if (unlikely(status)) 4871 return status; 4872 dprintk("%s: verifier = %08x:%08x\n", 4873 __func__, 4874 ((u32 *)readdir->verifier.data)[0], 4875 ((u32 *)readdir->verifier.data)[1]); 4876 4877 4878 hdrlen = (char *) xdr->p - (char *) iov->iov_base; 4879 recvd = rcvbuf->len - hdrlen; 4880 if (pglen > recvd) 4881 pglen = recvd; 4882 xdr_read_pages(xdr, pglen); 4883 4884 4885 return pglen; 4886 } 4887 4888 static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req) 4889 { 4890 struct xdr_buf *rcvbuf = &req->rq_rcv_buf; 4891 struct kvec *iov = rcvbuf->head; 4892 size_t hdrlen; 4893 u32 len, recvd; 4894 __be32 *p; 4895 int status; 4896 4897 status = decode_op_hdr(xdr, OP_READLINK); 4898 if (status) 4899 return status; 4900 4901 /* Convert length of symlink */ 4902 p = xdr_inline_decode(xdr, 4); 4903 if (unlikely(!p)) 4904 goto out_overflow; 4905 len = be32_to_cpup(p); 4906 if (len >= rcvbuf->page_len || len <= 0) { 4907 dprintk("nfs: server returned giant symlink!\n"); 4908 return -ENAMETOOLONG; 4909 } 4910 hdrlen = (char *) xdr->p - (char *) iov->iov_base; 4911 recvd = req->rq_rcv_buf.len - hdrlen; 4912 if (recvd < len) { 4913 dprintk("NFS: server cheating in readlink reply: " 4914 "count %u > recvd %u\n", len, recvd); 4915 return -EIO; 4916 } 4917 xdr_read_pages(xdr, len); 4918 /* 4919 * The XDR encode routine has set things up so that 4920 * the link text will be copied directly into the 4921 * buffer. We just have to do overflow-checking, 4922 * and and null-terminate the text (the VFS expects 4923 * null-termination). 4924 */ 4925 xdr_terminate_string(rcvbuf, len); 4926 return 0; 4927 out_overflow: 4928 print_overflow_msg(__func__, xdr); 4929 return -EIO; 4930 } 4931 4932 static int decode_remove(struct xdr_stream *xdr, struct nfs4_change_info *cinfo) 4933 { 4934 int status; 4935 4936 status = decode_op_hdr(xdr, OP_REMOVE); 4937 if (status) 4938 goto out; 4939 status = decode_change_info(xdr, cinfo); 4940 out: 4941 return status; 4942 } 4943 4944 static int decode_rename(struct xdr_stream *xdr, struct nfs4_change_info *old_cinfo, 4945 struct nfs4_change_info *new_cinfo) 4946 { 4947 int status; 4948 4949 status = decode_op_hdr(xdr, OP_RENAME); 4950 if (status) 4951 goto out; 4952 if ((status = decode_change_info(xdr, old_cinfo))) 4953 goto out; 4954 status = decode_change_info(xdr, new_cinfo); 4955 out: 4956 return status; 4957 } 4958 4959 static int decode_renew(struct xdr_stream *xdr) 4960 { 4961 return decode_op_hdr(xdr, OP_RENEW); 4962 } 4963 4964 static int 4965 decode_restorefh(struct xdr_stream *xdr) 4966 { 4967 return decode_op_hdr(xdr, OP_RESTOREFH); 4968 } 4969 4970 static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req, 4971 struct nfs_getaclres *res) 4972 { 4973 __be32 *savep, *bm_p; 4974 uint32_t attrlen, 4975 bitmap[3] = {0}; 4976 struct kvec *iov = req->rq_rcv_buf.head; 4977 int status; 4978 4979 res->acl_len = 0; 4980 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) 4981 goto out; 4982 bm_p = xdr->p; 4983 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) 4984 goto out; 4985 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) 4986 goto out; 4987 4988 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACL - 1U))) 4989 return -EIO; 4990 if (likely(bitmap[0] & FATTR4_WORD0_ACL)) { 4991 size_t hdrlen; 4992 u32 recvd; 4993 4994 /* The bitmap (xdr len + bitmaps) and the attr xdr len words 4995 * are stored with the acl data to handle the problem of 4996 * variable length bitmaps.*/ 4997 xdr->p = bm_p; 4998 res->acl_data_offset = be32_to_cpup(bm_p) + 2; 4999 res->acl_data_offset <<= 2; 5000 5001 /* We ignore &savep and don't do consistency checks on 5002 * the attr length. Let userspace figure it out.... */ 5003 hdrlen = (u8 *)xdr->p - (u8 *)iov->iov_base; 5004 attrlen += res->acl_data_offset; 5005 recvd = req->rq_rcv_buf.len - hdrlen; 5006 if (attrlen > recvd) { 5007 if (res->acl_flags & NFS4_ACL_LEN_REQUEST) { 5008 /* getxattr interface called with a NULL buf */ 5009 res->acl_len = attrlen; 5010 goto out; 5011 } 5012 dprintk("NFS: acl reply: attrlen %u > recvd %u\n", 5013 attrlen, recvd); 5014 return -EINVAL; 5015 } 5016 xdr_read_pages(xdr, attrlen); 5017 res->acl_len = attrlen; 5018 } else 5019 status = -EOPNOTSUPP; 5020 5021 out: 5022 return status; 5023 } 5024 5025 static int 5026 decode_savefh(struct xdr_stream *xdr) 5027 { 5028 return decode_op_hdr(xdr, OP_SAVEFH); 5029 } 5030 5031 static int decode_setattr(struct xdr_stream *xdr) 5032 { 5033 __be32 *p; 5034 uint32_t bmlen; 5035 int status; 5036 5037 status = decode_op_hdr(xdr, OP_SETATTR); 5038 if (status) 5039 return status; 5040 p = xdr_inline_decode(xdr, 4); 5041 if (unlikely(!p)) 5042 goto out_overflow; 5043 bmlen = be32_to_cpup(p); 5044 p = xdr_inline_decode(xdr, bmlen << 2); 5045 if (likely(p)) 5046 return 0; 5047 out_overflow: 5048 print_overflow_msg(__func__, xdr); 5049 return -EIO; 5050 } 5051 5052 static int decode_setclientid(struct xdr_stream *xdr, struct nfs4_setclientid_res *res) 5053 { 5054 __be32 *p; 5055 uint32_t opnum; 5056 int32_t nfserr; 5057 5058 p = xdr_inline_decode(xdr, 8); 5059 if (unlikely(!p)) 5060 goto out_overflow; 5061 opnum = be32_to_cpup(p++); 5062 if (opnum != OP_SETCLIENTID) { 5063 dprintk("nfs: decode_setclientid: Server returned operation" 5064 " %d\n", opnum); 5065 return -EIO; 5066 } 5067 nfserr = be32_to_cpup(p); 5068 if (nfserr == NFS_OK) { 5069 p = xdr_inline_decode(xdr, 8 + NFS4_VERIFIER_SIZE); 5070 if (unlikely(!p)) 5071 goto out_overflow; 5072 p = xdr_decode_hyper(p, &res->clientid); 5073 memcpy(res->confirm.data, p, NFS4_VERIFIER_SIZE); 5074 } else if (nfserr == NFSERR_CLID_INUSE) { 5075 uint32_t len; 5076 5077 /* skip netid string */ 5078 p = xdr_inline_decode(xdr, 4); 5079 if (unlikely(!p)) 5080 goto out_overflow; 5081 len = be32_to_cpup(p); 5082 p = xdr_inline_decode(xdr, len); 5083 if (unlikely(!p)) 5084 goto out_overflow; 5085 5086 /* skip uaddr string */ 5087 p = xdr_inline_decode(xdr, 4); 5088 if (unlikely(!p)) 5089 goto out_overflow; 5090 len = be32_to_cpup(p); 5091 p = xdr_inline_decode(xdr, len); 5092 if (unlikely(!p)) 5093 goto out_overflow; 5094 return -NFSERR_CLID_INUSE; 5095 } else 5096 return nfs4_stat_to_errno(nfserr); 5097 5098 return 0; 5099 out_overflow: 5100 print_overflow_msg(__func__, xdr); 5101 return -EIO; 5102 } 5103 5104 static int decode_setclientid_confirm(struct xdr_stream *xdr) 5105 { 5106 return decode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM); 5107 } 5108 5109 static int decode_write(struct xdr_stream *xdr, struct nfs_writeres *res) 5110 { 5111 __be32 *p; 5112 int status; 5113 5114 status = decode_op_hdr(xdr, OP_WRITE); 5115 if (status) 5116 return status; 5117 5118 p = xdr_inline_decode(xdr, 16); 5119 if (unlikely(!p)) 5120 goto out_overflow; 5121 res->count = be32_to_cpup(p++); 5122 res->verf->committed = be32_to_cpup(p++); 5123 memcpy(res->verf->verifier, p, 8); 5124 return 0; 5125 out_overflow: 5126 print_overflow_msg(__func__, xdr); 5127 return -EIO; 5128 } 5129 5130 static int decode_delegreturn(struct xdr_stream *xdr) 5131 { 5132 return decode_op_hdr(xdr, OP_DELEGRETURN); 5133 } 5134 5135 static int decode_secinfo_gss(struct xdr_stream *xdr, struct nfs4_secinfo_flavor *flavor) 5136 { 5137 __be32 *p; 5138 5139 p = xdr_inline_decode(xdr, 4); 5140 if (unlikely(!p)) 5141 goto out_overflow; 5142 flavor->gss.sec_oid4.len = be32_to_cpup(p); 5143 if (flavor->gss.sec_oid4.len > GSS_OID_MAX_LEN) 5144 goto out_err; 5145 5146 p = xdr_inline_decode(xdr, flavor->gss.sec_oid4.len); 5147 if (unlikely(!p)) 5148 goto out_overflow; 5149 memcpy(flavor->gss.sec_oid4.data, p, flavor->gss.sec_oid4.len); 5150 5151 p = xdr_inline_decode(xdr, 8); 5152 if (unlikely(!p)) 5153 goto out_overflow; 5154 flavor->gss.qop4 = be32_to_cpup(p++); 5155 flavor->gss.service = be32_to_cpup(p); 5156 5157 return 0; 5158 5159 out_overflow: 5160 print_overflow_msg(__func__, xdr); 5161 return -EIO; 5162 out_err: 5163 return -EINVAL; 5164 } 5165 5166 static int decode_secinfo(struct xdr_stream *xdr, struct nfs4_secinfo_res *res) 5167 { 5168 struct nfs4_secinfo_flavor *sec_flavor; 5169 int status; 5170 __be32 *p; 5171 int i, num_flavors; 5172 5173 status = decode_op_hdr(xdr, OP_SECINFO); 5174 if (status) 5175 goto out; 5176 p = xdr_inline_decode(xdr, 4); 5177 if (unlikely(!p)) 5178 goto out_overflow; 5179 5180 res->flavors->num_flavors = 0; 5181 num_flavors = be32_to_cpup(p); 5182 5183 for (i = 0; i < num_flavors; i++) { 5184 sec_flavor = &res->flavors->flavors[i]; 5185 if ((char *)&sec_flavor[1] - (char *)res->flavors > PAGE_SIZE) 5186 break; 5187 5188 p = xdr_inline_decode(xdr, 4); 5189 if (unlikely(!p)) 5190 goto out_overflow; 5191 sec_flavor->flavor = be32_to_cpup(p); 5192 5193 if (sec_flavor->flavor == RPC_AUTH_GSS) { 5194 status = decode_secinfo_gss(xdr, sec_flavor); 5195 if (status) 5196 goto out; 5197 } 5198 res->flavors->num_flavors++; 5199 } 5200 5201 out: 5202 return status; 5203 out_overflow: 5204 print_overflow_msg(__func__, xdr); 5205 return -EIO; 5206 } 5207 5208 #if defined(CONFIG_NFS_V4_1) 5209 static int decode_exchange_id(struct xdr_stream *xdr, 5210 struct nfs41_exchange_id_res *res) 5211 { 5212 __be32 *p; 5213 uint32_t dummy; 5214 char *dummy_str; 5215 int status; 5216 struct nfs_client *clp = res->client; 5217 5218 status = decode_op_hdr(xdr, OP_EXCHANGE_ID); 5219 if (status) 5220 return status; 5221 5222 p = xdr_inline_decode(xdr, 8); 5223 if (unlikely(!p)) 5224 goto out_overflow; 5225 xdr_decode_hyper(p, &clp->cl_clientid); 5226 p = xdr_inline_decode(xdr, 12); 5227 if (unlikely(!p)) 5228 goto out_overflow; 5229 clp->cl_seqid = be32_to_cpup(p++); 5230 clp->cl_exchange_flags = be32_to_cpup(p++); 5231 5232 /* We ask for SP4_NONE */ 5233 dummy = be32_to_cpup(p); 5234 if (dummy != SP4_NONE) 5235 return -EIO; 5236 5237 /* Throw away minor_id */ 5238 p = xdr_inline_decode(xdr, 8); 5239 if (unlikely(!p)) 5240 goto out_overflow; 5241 5242 /* Throw away Major id */ 5243 status = decode_opaque_inline(xdr, &dummy, &dummy_str); 5244 if (unlikely(status)) 5245 return status; 5246 5247 /* Save server_scope */ 5248 status = decode_opaque_inline(xdr, &dummy, &dummy_str); 5249 if (unlikely(status)) 5250 return status; 5251 5252 if (unlikely(dummy > NFS4_OPAQUE_LIMIT)) 5253 return -EIO; 5254 5255 memcpy(res->server_scope->server_scope, dummy_str, dummy); 5256 res->server_scope->server_scope_sz = dummy; 5257 5258 /* Throw away Implementation id array */ 5259 status = decode_opaque_inline(xdr, &dummy, &dummy_str); 5260 if (unlikely(status)) 5261 return status; 5262 5263 return 0; 5264 out_overflow: 5265 print_overflow_msg(__func__, xdr); 5266 return -EIO; 5267 } 5268 5269 static int decode_chan_attrs(struct xdr_stream *xdr, 5270 struct nfs4_channel_attrs *attrs) 5271 { 5272 __be32 *p; 5273 u32 nr_attrs, val; 5274 5275 p = xdr_inline_decode(xdr, 28); 5276 if (unlikely(!p)) 5277 goto out_overflow; 5278 val = be32_to_cpup(p++); /* headerpadsz */ 5279 if (val) 5280 return -EINVAL; /* no support for header padding yet */ 5281 attrs->max_rqst_sz = be32_to_cpup(p++); 5282 attrs->max_resp_sz = be32_to_cpup(p++); 5283 attrs->max_resp_sz_cached = be32_to_cpup(p++); 5284 attrs->max_ops = be32_to_cpup(p++); 5285 attrs->max_reqs = be32_to_cpup(p++); 5286 nr_attrs = be32_to_cpup(p); 5287 if (unlikely(nr_attrs > 1)) { 5288 printk(KERN_WARNING "%s: Invalid rdma channel attrs count %u\n", 5289 __func__, nr_attrs); 5290 return -EINVAL; 5291 } 5292 if (nr_attrs == 1) { 5293 p = xdr_inline_decode(xdr, 4); /* skip rdma_attrs */ 5294 if (unlikely(!p)) 5295 goto out_overflow; 5296 } 5297 return 0; 5298 out_overflow: 5299 print_overflow_msg(__func__, xdr); 5300 return -EIO; 5301 } 5302 5303 static int decode_sessionid(struct xdr_stream *xdr, struct nfs4_sessionid *sid) 5304 { 5305 return decode_opaque_fixed(xdr, sid->data, NFS4_MAX_SESSIONID_LEN); 5306 } 5307 5308 static int decode_create_session(struct xdr_stream *xdr, 5309 struct nfs41_create_session_res *res) 5310 { 5311 __be32 *p; 5312 int status; 5313 struct nfs_client *clp = res->client; 5314 struct nfs4_session *session = clp->cl_session; 5315 5316 status = decode_op_hdr(xdr, OP_CREATE_SESSION); 5317 if (!status) 5318 status = decode_sessionid(xdr, &session->sess_id); 5319 if (unlikely(status)) 5320 return status; 5321 5322 /* seqid, flags */ 5323 p = xdr_inline_decode(xdr, 8); 5324 if (unlikely(!p)) 5325 goto out_overflow; 5326 clp->cl_seqid = be32_to_cpup(p++); 5327 session->flags = be32_to_cpup(p); 5328 5329 /* Channel attributes */ 5330 status = decode_chan_attrs(xdr, &session->fc_attrs); 5331 if (!status) 5332 status = decode_chan_attrs(xdr, &session->bc_attrs); 5333 return status; 5334 out_overflow: 5335 print_overflow_msg(__func__, xdr); 5336 return -EIO; 5337 } 5338 5339 static int decode_destroy_session(struct xdr_stream *xdr, void *dummy) 5340 { 5341 return decode_op_hdr(xdr, OP_DESTROY_SESSION); 5342 } 5343 5344 static int decode_reclaim_complete(struct xdr_stream *xdr, void *dummy) 5345 { 5346 return decode_op_hdr(xdr, OP_RECLAIM_COMPLETE); 5347 } 5348 #endif /* CONFIG_NFS_V4_1 */ 5349 5350 static int decode_sequence(struct xdr_stream *xdr, 5351 struct nfs4_sequence_res *res, 5352 struct rpc_rqst *rqstp) 5353 { 5354 #if defined(CONFIG_NFS_V4_1) 5355 struct nfs4_sessionid id; 5356 u32 dummy; 5357 int status; 5358 __be32 *p; 5359 5360 if (!res->sr_session) 5361 return 0; 5362 5363 status = decode_op_hdr(xdr, OP_SEQUENCE); 5364 if (!status) 5365 status = decode_sessionid(xdr, &id); 5366 if (unlikely(status)) 5367 goto out_err; 5368 5369 /* 5370 * If the server returns different values for sessionID, slotID or 5371 * sequence number, the server is looney tunes. 5372 */ 5373 status = -EREMOTEIO; 5374 5375 if (memcmp(id.data, res->sr_session->sess_id.data, 5376 NFS4_MAX_SESSIONID_LEN)) { 5377 dprintk("%s Invalid session id\n", __func__); 5378 goto out_err; 5379 } 5380 5381 p = xdr_inline_decode(xdr, 20); 5382 if (unlikely(!p)) 5383 goto out_overflow; 5384 5385 /* seqid */ 5386 dummy = be32_to_cpup(p++); 5387 if (dummy != res->sr_slot->seq_nr) { 5388 dprintk("%s Invalid sequence number\n", __func__); 5389 goto out_err; 5390 } 5391 /* slot id */ 5392 dummy = be32_to_cpup(p++); 5393 if (dummy != res->sr_slot - res->sr_session->fc_slot_table.slots) { 5394 dprintk("%s Invalid slot id\n", __func__); 5395 goto out_err; 5396 } 5397 /* highest slot id - currently not processed */ 5398 dummy = be32_to_cpup(p++); 5399 /* target highest slot id - currently not processed */ 5400 dummy = be32_to_cpup(p++); 5401 /* result flags */ 5402 res->sr_status_flags = be32_to_cpup(p); 5403 status = 0; 5404 out_err: 5405 res->sr_status = status; 5406 return status; 5407 out_overflow: 5408 print_overflow_msg(__func__, xdr); 5409 status = -EIO; 5410 goto out_err; 5411 #else /* CONFIG_NFS_V4_1 */ 5412 return 0; 5413 #endif /* CONFIG_NFS_V4_1 */ 5414 } 5415 5416 #if defined(CONFIG_NFS_V4_1) 5417 /* 5418 * TODO: Need to handle case when EOF != true; 5419 */ 5420 static int decode_getdevicelist(struct xdr_stream *xdr, 5421 struct pnfs_devicelist *res) 5422 { 5423 __be32 *p; 5424 int status, i; 5425 struct nfs_writeverf verftemp; 5426 5427 status = decode_op_hdr(xdr, OP_GETDEVICELIST); 5428 if (status) 5429 return status; 5430 5431 p = xdr_inline_decode(xdr, 8 + 8 + 4); 5432 if (unlikely(!p)) 5433 goto out_overflow; 5434 5435 /* TODO: Skip cookie for now */ 5436 p += 2; 5437 5438 /* Read verifier */ 5439 p = xdr_decode_opaque_fixed(p, verftemp.verifier, 8); 5440 5441 res->num_devs = be32_to_cpup(p); 5442 5443 dprintk("%s: num_dev %d\n", __func__, res->num_devs); 5444 5445 if (res->num_devs > NFS4_PNFS_GETDEVLIST_MAXNUM) { 5446 printk(KERN_ERR "%s too many result dev_num %u\n", 5447 __func__, res->num_devs); 5448 return -EIO; 5449 } 5450 5451 p = xdr_inline_decode(xdr, 5452 res->num_devs * NFS4_DEVICEID4_SIZE + 4); 5453 if (unlikely(!p)) 5454 goto out_overflow; 5455 for (i = 0; i < res->num_devs; i++) 5456 p = xdr_decode_opaque_fixed(p, res->dev_id[i].data, 5457 NFS4_DEVICEID4_SIZE); 5458 res->eof = be32_to_cpup(p); 5459 return 0; 5460 out_overflow: 5461 print_overflow_msg(__func__, xdr); 5462 return -EIO; 5463 } 5464 5465 static int decode_getdeviceinfo(struct xdr_stream *xdr, 5466 struct pnfs_device *pdev) 5467 { 5468 __be32 *p; 5469 uint32_t len, type; 5470 int status; 5471 5472 status = decode_op_hdr(xdr, OP_GETDEVICEINFO); 5473 if (status) { 5474 if (status == -ETOOSMALL) { 5475 p = xdr_inline_decode(xdr, 4); 5476 if (unlikely(!p)) 5477 goto out_overflow; 5478 pdev->mincount = be32_to_cpup(p); 5479 dprintk("%s: Min count too small. mincnt = %u\n", 5480 __func__, pdev->mincount); 5481 } 5482 return status; 5483 } 5484 5485 p = xdr_inline_decode(xdr, 8); 5486 if (unlikely(!p)) 5487 goto out_overflow; 5488 type = be32_to_cpup(p++); 5489 if (type != pdev->layout_type) { 5490 dprintk("%s: layout mismatch req: %u pdev: %u\n", 5491 __func__, pdev->layout_type, type); 5492 return -EINVAL; 5493 } 5494 /* 5495 * Get the length of the opaque device_addr4. xdr_read_pages places 5496 * the opaque device_addr4 in the xdr_buf->pages (pnfs_device->pages) 5497 * and places the remaining xdr data in xdr_buf->tail 5498 */ 5499 pdev->mincount = be32_to_cpup(p); 5500 xdr_read_pages(xdr, pdev->mincount); /* include space for the length */ 5501 5502 /* Parse notification bitmap, verifying that it is zero. */ 5503 p = xdr_inline_decode(xdr, 4); 5504 if (unlikely(!p)) 5505 goto out_overflow; 5506 len = be32_to_cpup(p); 5507 if (len) { 5508 uint32_t i; 5509 5510 p = xdr_inline_decode(xdr, 4 * len); 5511 if (unlikely(!p)) 5512 goto out_overflow; 5513 for (i = 0; i < len; i++, p++) { 5514 if (be32_to_cpup(p)) { 5515 dprintk("%s: notifications not supported\n", 5516 __func__); 5517 return -EIO; 5518 } 5519 } 5520 } 5521 return 0; 5522 out_overflow: 5523 print_overflow_msg(__func__, xdr); 5524 return -EIO; 5525 } 5526 5527 static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req, 5528 struct nfs4_layoutget_res *res) 5529 { 5530 __be32 *p; 5531 int status; 5532 u32 layout_count; 5533 struct xdr_buf *rcvbuf = &req->rq_rcv_buf; 5534 struct kvec *iov = rcvbuf->head; 5535 u32 hdrlen, recvd; 5536 5537 status = decode_op_hdr(xdr, OP_LAYOUTGET); 5538 if (status) 5539 return status; 5540 p = xdr_inline_decode(xdr, 8 + NFS4_STATEID_SIZE); 5541 if (unlikely(!p)) 5542 goto out_overflow; 5543 res->return_on_close = be32_to_cpup(p++); 5544 p = xdr_decode_opaque_fixed(p, res->stateid.data, NFS4_STATEID_SIZE); 5545 layout_count = be32_to_cpup(p); 5546 if (!layout_count) { 5547 dprintk("%s: server responded with empty layout array\n", 5548 __func__); 5549 return -EINVAL; 5550 } 5551 5552 p = xdr_inline_decode(xdr, 28); 5553 if (unlikely(!p)) 5554 goto out_overflow; 5555 p = xdr_decode_hyper(p, &res->range.offset); 5556 p = xdr_decode_hyper(p, &res->range.length); 5557 res->range.iomode = be32_to_cpup(p++); 5558 res->type = be32_to_cpup(p++); 5559 res->layoutp->len = be32_to_cpup(p); 5560 5561 dprintk("%s roff:%lu rlen:%lu riomode:%d, lo_type:0x%x, lo.len:%d\n", 5562 __func__, 5563 (unsigned long)res->range.offset, 5564 (unsigned long)res->range.length, 5565 res->range.iomode, 5566 res->type, 5567 res->layoutp->len); 5568 5569 hdrlen = (u8 *) xdr->p - (u8 *) iov->iov_base; 5570 recvd = req->rq_rcv_buf.len - hdrlen; 5571 if (res->layoutp->len > recvd) { 5572 dprintk("NFS: server cheating in layoutget reply: " 5573 "layout len %u > recvd %u\n", 5574 res->layoutp->len, recvd); 5575 return -EINVAL; 5576 } 5577 5578 xdr_read_pages(xdr, res->layoutp->len); 5579 5580 if (layout_count > 1) { 5581 /* We only handle a length one array at the moment. Any 5582 * further entries are just ignored. Note that this means 5583 * the client may see a response that is less than the 5584 * minimum it requested. 5585 */ 5586 dprintk("%s: server responded with %d layouts, dropping tail\n", 5587 __func__, layout_count); 5588 } 5589 5590 return 0; 5591 out_overflow: 5592 print_overflow_msg(__func__, xdr); 5593 return -EIO; 5594 } 5595 5596 static int decode_layoutreturn(struct xdr_stream *xdr, 5597 struct nfs4_layoutreturn_res *res) 5598 { 5599 __be32 *p; 5600 int status; 5601 5602 status = decode_op_hdr(xdr, OP_LAYOUTRETURN); 5603 if (status) 5604 return status; 5605 p = xdr_inline_decode(xdr, 4); 5606 if (unlikely(!p)) 5607 goto out_overflow; 5608 res->lrs_present = be32_to_cpup(p); 5609 if (res->lrs_present) 5610 status = decode_stateid(xdr, &res->stateid); 5611 return status; 5612 out_overflow: 5613 print_overflow_msg(__func__, xdr); 5614 return -EIO; 5615 } 5616 5617 static int decode_layoutcommit(struct xdr_stream *xdr, 5618 struct rpc_rqst *req, 5619 struct nfs4_layoutcommit_res *res) 5620 { 5621 __be32 *p; 5622 __u32 sizechanged; 5623 int status; 5624 5625 status = decode_op_hdr(xdr, OP_LAYOUTCOMMIT); 5626 res->status = status; 5627 if (status) 5628 return status; 5629 5630 p = xdr_inline_decode(xdr, 4); 5631 if (unlikely(!p)) 5632 goto out_overflow; 5633 sizechanged = be32_to_cpup(p); 5634 5635 if (sizechanged) { 5636 /* throw away new size */ 5637 p = xdr_inline_decode(xdr, 8); 5638 if (unlikely(!p)) 5639 goto out_overflow; 5640 } 5641 return 0; 5642 out_overflow: 5643 print_overflow_msg(__func__, xdr); 5644 return -EIO; 5645 } 5646 5647 static int decode_test_stateid(struct xdr_stream *xdr, 5648 struct nfs41_test_stateid_res *res) 5649 { 5650 __be32 *p; 5651 int status; 5652 int num_res; 5653 5654 status = decode_op_hdr(xdr, OP_TEST_STATEID); 5655 if (status) 5656 return status; 5657 5658 p = xdr_inline_decode(xdr, 4); 5659 if (unlikely(!p)) 5660 goto out_overflow; 5661 num_res = be32_to_cpup(p++); 5662 if (num_res != 1) 5663 goto out; 5664 5665 p = xdr_inline_decode(xdr, 4); 5666 if (unlikely(!p)) 5667 goto out_overflow; 5668 res->status = be32_to_cpup(p++); 5669 return res->status; 5670 out_overflow: 5671 print_overflow_msg(__func__, xdr); 5672 out: 5673 return -EIO; 5674 } 5675 5676 static int decode_free_stateid(struct xdr_stream *xdr, 5677 struct nfs41_free_stateid_res *res) 5678 { 5679 __be32 *p; 5680 int status; 5681 5682 status = decode_op_hdr(xdr, OP_FREE_STATEID); 5683 if (status) 5684 return status; 5685 5686 p = xdr_inline_decode(xdr, 4); 5687 if (unlikely(!p)) 5688 goto out_overflow; 5689 res->status = be32_to_cpup(p++); 5690 return res->status; 5691 out_overflow: 5692 print_overflow_msg(__func__, xdr); 5693 return -EIO; 5694 } 5695 #endif /* CONFIG_NFS_V4_1 */ 5696 5697 /* 5698 * END OF "GENERIC" DECODE ROUTINES. 5699 */ 5700 5701 /* 5702 * Decode OPEN_DOWNGRADE response 5703 */ 5704 static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp, 5705 struct xdr_stream *xdr, 5706 struct nfs_closeres *res) 5707 { 5708 struct compound_hdr hdr; 5709 int status; 5710 5711 status = decode_compound_hdr(xdr, &hdr); 5712 if (status) 5713 goto out; 5714 status = decode_sequence(xdr, &res->seq_res, rqstp); 5715 if (status) 5716 goto out; 5717 status = decode_putfh(xdr); 5718 if (status) 5719 goto out; 5720 status = decode_open_downgrade(xdr, res); 5721 if (status != 0) 5722 goto out; 5723 decode_getfattr(xdr, res->fattr, res->server); 5724 out: 5725 return status; 5726 } 5727 5728 /* 5729 * Decode ACCESS response 5730 */ 5731 static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 5732 struct nfs4_accessres *res) 5733 { 5734 struct compound_hdr hdr; 5735 int status; 5736 5737 status = decode_compound_hdr(xdr, &hdr); 5738 if (status) 5739 goto out; 5740 status = decode_sequence(xdr, &res->seq_res, rqstp); 5741 if (status) 5742 goto out; 5743 status = decode_putfh(xdr); 5744 if (status != 0) 5745 goto out; 5746 status = decode_access(xdr, res); 5747 if (status != 0) 5748 goto out; 5749 decode_getfattr(xdr, res->fattr, res->server); 5750 out: 5751 return status; 5752 } 5753 5754 /* 5755 * Decode LOOKUP response 5756 */ 5757 static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 5758 struct nfs4_lookup_res *res) 5759 { 5760 struct compound_hdr hdr; 5761 int status; 5762 5763 status = decode_compound_hdr(xdr, &hdr); 5764 if (status) 5765 goto out; 5766 status = decode_sequence(xdr, &res->seq_res, rqstp); 5767 if (status) 5768 goto out; 5769 status = decode_putfh(xdr); 5770 if (status) 5771 goto out; 5772 status = decode_lookup(xdr); 5773 if (status) 5774 goto out; 5775 status = decode_getfh(xdr, res->fh); 5776 if (status) 5777 goto out; 5778 status = decode_getfattr(xdr, res->fattr, res->server); 5779 out: 5780 return status; 5781 } 5782 5783 /* 5784 * Decode LOOKUP_ROOT response 5785 */ 5786 static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp, 5787 struct xdr_stream *xdr, 5788 struct nfs4_lookup_res *res) 5789 { 5790 struct compound_hdr hdr; 5791 int status; 5792 5793 status = decode_compound_hdr(xdr, &hdr); 5794 if (status) 5795 goto out; 5796 status = decode_sequence(xdr, &res->seq_res, rqstp); 5797 if (status) 5798 goto out; 5799 status = decode_putrootfh(xdr); 5800 if (status) 5801 goto out; 5802 status = decode_getfh(xdr, res->fh); 5803 if (status == 0) 5804 status = decode_getfattr(xdr, res->fattr, res->server); 5805 out: 5806 return status; 5807 } 5808 5809 /* 5810 * Decode REMOVE response 5811 */ 5812 static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 5813 struct nfs_removeres *res) 5814 { 5815 struct compound_hdr hdr; 5816 int status; 5817 5818 status = decode_compound_hdr(xdr, &hdr); 5819 if (status) 5820 goto out; 5821 status = decode_sequence(xdr, &res->seq_res, rqstp); 5822 if (status) 5823 goto out; 5824 status = decode_putfh(xdr); 5825 if (status) 5826 goto out; 5827 status = decode_remove(xdr, &res->cinfo); 5828 if (status) 5829 goto out; 5830 decode_getfattr(xdr, res->dir_attr, res->server); 5831 out: 5832 return status; 5833 } 5834 5835 /* 5836 * Decode RENAME response 5837 */ 5838 static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 5839 struct nfs_renameres *res) 5840 { 5841 struct compound_hdr hdr; 5842 int status; 5843 5844 status = decode_compound_hdr(xdr, &hdr); 5845 if (status) 5846 goto out; 5847 status = decode_sequence(xdr, &res->seq_res, rqstp); 5848 if (status) 5849 goto out; 5850 status = decode_putfh(xdr); 5851 if (status) 5852 goto out; 5853 status = decode_savefh(xdr); 5854 if (status) 5855 goto out; 5856 status = decode_putfh(xdr); 5857 if (status) 5858 goto out; 5859 status = decode_rename(xdr, &res->old_cinfo, &res->new_cinfo); 5860 if (status) 5861 goto out; 5862 /* Current FH is target directory */ 5863 if (decode_getfattr(xdr, res->new_fattr, res->server)) 5864 goto out; 5865 status = decode_restorefh(xdr); 5866 if (status) 5867 goto out; 5868 decode_getfattr(xdr, res->old_fattr, res->server); 5869 out: 5870 return status; 5871 } 5872 5873 /* 5874 * Decode LINK response 5875 */ 5876 static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 5877 struct nfs4_link_res *res) 5878 { 5879 struct compound_hdr hdr; 5880 int status; 5881 5882 status = decode_compound_hdr(xdr, &hdr); 5883 if (status) 5884 goto out; 5885 status = decode_sequence(xdr, &res->seq_res, rqstp); 5886 if (status) 5887 goto out; 5888 status = decode_putfh(xdr); 5889 if (status) 5890 goto out; 5891 status = decode_savefh(xdr); 5892 if (status) 5893 goto out; 5894 status = decode_putfh(xdr); 5895 if (status) 5896 goto out; 5897 status = decode_link(xdr, &res->cinfo); 5898 if (status) 5899 goto out; 5900 /* 5901 * Note order: OP_LINK leaves the directory as the current 5902 * filehandle. 5903 */ 5904 if (decode_getfattr(xdr, res->dir_attr, res->server)) 5905 goto out; 5906 status = decode_restorefh(xdr); 5907 if (status) 5908 goto out; 5909 decode_getfattr(xdr, res->fattr, res->server); 5910 out: 5911 return status; 5912 } 5913 5914 /* 5915 * Decode CREATE response 5916 */ 5917 static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 5918 struct nfs4_create_res *res) 5919 { 5920 struct compound_hdr hdr; 5921 int status; 5922 5923 status = decode_compound_hdr(xdr, &hdr); 5924 if (status) 5925 goto out; 5926 status = decode_sequence(xdr, &res->seq_res, rqstp); 5927 if (status) 5928 goto out; 5929 status = decode_putfh(xdr); 5930 if (status) 5931 goto out; 5932 status = decode_savefh(xdr); 5933 if (status) 5934 goto out; 5935 status = decode_create(xdr, &res->dir_cinfo); 5936 if (status) 5937 goto out; 5938 status = decode_getfh(xdr, res->fh); 5939 if (status) 5940 goto out; 5941 if (decode_getfattr(xdr, res->fattr, res->server)) 5942 goto out; 5943 status = decode_restorefh(xdr); 5944 if (status) 5945 goto out; 5946 decode_getfattr(xdr, res->dir_fattr, res->server); 5947 out: 5948 return status; 5949 } 5950 5951 /* 5952 * Decode SYMLINK response 5953 */ 5954 static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 5955 struct nfs4_create_res *res) 5956 { 5957 return nfs4_xdr_dec_create(rqstp, xdr, res); 5958 } 5959 5960 /* 5961 * Decode GETATTR response 5962 */ 5963 static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 5964 struct nfs4_getattr_res *res) 5965 { 5966 struct compound_hdr hdr; 5967 int status; 5968 5969 status = decode_compound_hdr(xdr, &hdr); 5970 if (status) 5971 goto out; 5972 status = decode_sequence(xdr, &res->seq_res, rqstp); 5973 if (status) 5974 goto out; 5975 status = decode_putfh(xdr); 5976 if (status) 5977 goto out; 5978 status = decode_getfattr(xdr, res->fattr, res->server); 5979 out: 5980 return status; 5981 } 5982 5983 /* 5984 * Encode an SETACL request 5985 */ 5986 static void nfs4_xdr_enc_setacl(struct rpc_rqst *req, struct xdr_stream *xdr, 5987 struct nfs_setaclargs *args) 5988 { 5989 struct compound_hdr hdr = { 5990 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 5991 }; 5992 5993 encode_compound_hdr(xdr, req, &hdr); 5994 encode_sequence(xdr, &args->seq_args, &hdr); 5995 encode_putfh(xdr, args->fh, &hdr); 5996 encode_setacl(xdr, args, &hdr); 5997 encode_nops(&hdr); 5998 } 5999 6000 /* 6001 * Decode SETACL response 6002 */ 6003 static int 6004 nfs4_xdr_dec_setacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6005 struct nfs_setaclres *res) 6006 { 6007 struct compound_hdr hdr; 6008 int status; 6009 6010 status = decode_compound_hdr(xdr, &hdr); 6011 if (status) 6012 goto out; 6013 status = decode_sequence(xdr, &res->seq_res, rqstp); 6014 if (status) 6015 goto out; 6016 status = decode_putfh(xdr); 6017 if (status) 6018 goto out; 6019 status = decode_setattr(xdr); 6020 out: 6021 return status; 6022 } 6023 6024 /* 6025 * Decode GETACL response 6026 */ 6027 static int 6028 nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6029 struct nfs_getaclres *res) 6030 { 6031 struct compound_hdr hdr; 6032 int status; 6033 6034 if (res->acl_scratch != NULL) { 6035 void *p = page_address(res->acl_scratch); 6036 xdr_set_scratch_buffer(xdr, p, PAGE_SIZE); 6037 } 6038 status = decode_compound_hdr(xdr, &hdr); 6039 if (status) 6040 goto out; 6041 status = decode_sequence(xdr, &res->seq_res, rqstp); 6042 if (status) 6043 goto out; 6044 status = decode_putfh(xdr); 6045 if (status) 6046 goto out; 6047 status = decode_getacl(xdr, rqstp, res); 6048 6049 out: 6050 return status; 6051 } 6052 6053 /* 6054 * Decode CLOSE response 6055 */ 6056 static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6057 struct nfs_closeres *res) 6058 { 6059 struct compound_hdr hdr; 6060 int status; 6061 6062 status = decode_compound_hdr(xdr, &hdr); 6063 if (status) 6064 goto out; 6065 status = decode_sequence(xdr, &res->seq_res, rqstp); 6066 if (status) 6067 goto out; 6068 status = decode_putfh(xdr); 6069 if (status) 6070 goto out; 6071 status = decode_close(xdr, res); 6072 if (status != 0) 6073 goto out; 6074 /* 6075 * Note: Server may do delete on close for this file 6076 * in which case the getattr call will fail with 6077 * an ESTALE error. Shouldn't be a problem, 6078 * though, since fattr->valid will remain unset. 6079 */ 6080 decode_getfattr(xdr, res->fattr, res->server); 6081 out: 6082 return status; 6083 } 6084 6085 /* 6086 * Decode OPEN response 6087 */ 6088 static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6089 struct nfs_openres *res) 6090 { 6091 struct compound_hdr hdr; 6092 int status; 6093 6094 status = decode_compound_hdr(xdr, &hdr); 6095 if (status) 6096 goto out; 6097 status = decode_sequence(xdr, &res->seq_res, rqstp); 6098 if (status) 6099 goto out; 6100 status = decode_putfh(xdr); 6101 if (status) 6102 goto out; 6103 status = decode_savefh(xdr); 6104 if (status) 6105 goto out; 6106 status = decode_open(xdr, res); 6107 if (status) 6108 goto out; 6109 if (decode_getfh(xdr, &res->fh) != 0) 6110 goto out; 6111 if (decode_getfattr(xdr, res->f_attr, res->server) != 0) 6112 goto out; 6113 if (decode_restorefh(xdr) != 0) 6114 goto out; 6115 decode_getfattr(xdr, res->dir_attr, res->server); 6116 out: 6117 return status; 6118 } 6119 6120 /* 6121 * Decode OPEN_CONFIRM response 6122 */ 6123 static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp, 6124 struct xdr_stream *xdr, 6125 struct nfs_open_confirmres *res) 6126 { 6127 struct compound_hdr hdr; 6128 int status; 6129 6130 status = decode_compound_hdr(xdr, &hdr); 6131 if (status) 6132 goto out; 6133 status = decode_putfh(xdr); 6134 if (status) 6135 goto out; 6136 status = decode_open_confirm(xdr, res); 6137 out: 6138 return status; 6139 } 6140 6141 /* 6142 * Decode OPEN response 6143 */ 6144 static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp, 6145 struct xdr_stream *xdr, 6146 struct nfs_openres *res) 6147 { 6148 struct compound_hdr hdr; 6149 int status; 6150 6151 status = decode_compound_hdr(xdr, &hdr); 6152 if (status) 6153 goto out; 6154 status = decode_sequence(xdr, &res->seq_res, rqstp); 6155 if (status) 6156 goto out; 6157 status = decode_putfh(xdr); 6158 if (status) 6159 goto out; 6160 status = decode_open(xdr, res); 6161 if (status) 6162 goto out; 6163 decode_getfattr(xdr, res->f_attr, res->server); 6164 out: 6165 return status; 6166 } 6167 6168 /* 6169 * Decode SETATTR response 6170 */ 6171 static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp, 6172 struct xdr_stream *xdr, 6173 struct nfs_setattrres *res) 6174 { 6175 struct compound_hdr hdr; 6176 int status; 6177 6178 status = decode_compound_hdr(xdr, &hdr); 6179 if (status) 6180 goto out; 6181 status = decode_sequence(xdr, &res->seq_res, rqstp); 6182 if (status) 6183 goto out; 6184 status = decode_putfh(xdr); 6185 if (status) 6186 goto out; 6187 status = decode_setattr(xdr); 6188 if (status) 6189 goto out; 6190 decode_getfattr(xdr, res->fattr, res->server); 6191 out: 6192 return status; 6193 } 6194 6195 /* 6196 * Decode LOCK response 6197 */ 6198 static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6199 struct nfs_lock_res *res) 6200 { 6201 struct compound_hdr hdr; 6202 int status; 6203 6204 status = decode_compound_hdr(xdr, &hdr); 6205 if (status) 6206 goto out; 6207 status = decode_sequence(xdr, &res->seq_res, rqstp); 6208 if (status) 6209 goto out; 6210 status = decode_putfh(xdr); 6211 if (status) 6212 goto out; 6213 status = decode_lock(xdr, res); 6214 out: 6215 return status; 6216 } 6217 6218 /* 6219 * Decode LOCKT response 6220 */ 6221 static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6222 struct nfs_lockt_res *res) 6223 { 6224 struct compound_hdr hdr; 6225 int status; 6226 6227 status = decode_compound_hdr(xdr, &hdr); 6228 if (status) 6229 goto out; 6230 status = decode_sequence(xdr, &res->seq_res, rqstp); 6231 if (status) 6232 goto out; 6233 status = decode_putfh(xdr); 6234 if (status) 6235 goto out; 6236 status = decode_lockt(xdr, res); 6237 out: 6238 return status; 6239 } 6240 6241 /* 6242 * Decode LOCKU response 6243 */ 6244 static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6245 struct nfs_locku_res *res) 6246 { 6247 struct compound_hdr hdr; 6248 int status; 6249 6250 status = decode_compound_hdr(xdr, &hdr); 6251 if (status) 6252 goto out; 6253 status = decode_sequence(xdr, &res->seq_res, rqstp); 6254 if (status) 6255 goto out; 6256 status = decode_putfh(xdr); 6257 if (status) 6258 goto out; 6259 status = decode_locku(xdr, res); 6260 out: 6261 return status; 6262 } 6263 6264 static int nfs4_xdr_dec_release_lockowner(struct rpc_rqst *rqstp, 6265 struct xdr_stream *xdr, void *dummy) 6266 { 6267 struct compound_hdr hdr; 6268 int status; 6269 6270 status = decode_compound_hdr(xdr, &hdr); 6271 if (!status) 6272 status = decode_release_lockowner(xdr); 6273 return status; 6274 } 6275 6276 /* 6277 * Decode READLINK response 6278 */ 6279 static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp, 6280 struct xdr_stream *xdr, 6281 struct nfs4_readlink_res *res) 6282 { 6283 struct compound_hdr hdr; 6284 int status; 6285 6286 status = decode_compound_hdr(xdr, &hdr); 6287 if (status) 6288 goto out; 6289 status = decode_sequence(xdr, &res->seq_res, rqstp); 6290 if (status) 6291 goto out; 6292 status = decode_putfh(xdr); 6293 if (status) 6294 goto out; 6295 status = decode_readlink(xdr, rqstp); 6296 out: 6297 return status; 6298 } 6299 6300 /* 6301 * Decode READDIR response 6302 */ 6303 static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6304 struct nfs4_readdir_res *res) 6305 { 6306 struct compound_hdr hdr; 6307 int status; 6308 6309 status = decode_compound_hdr(xdr, &hdr); 6310 if (status) 6311 goto out; 6312 status = decode_sequence(xdr, &res->seq_res, rqstp); 6313 if (status) 6314 goto out; 6315 status = decode_putfh(xdr); 6316 if (status) 6317 goto out; 6318 status = decode_readdir(xdr, rqstp, res); 6319 out: 6320 return status; 6321 } 6322 6323 /* 6324 * Decode Read response 6325 */ 6326 static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6327 struct nfs_readres *res) 6328 { 6329 struct compound_hdr hdr; 6330 int status; 6331 6332 status = decode_compound_hdr(xdr, &hdr); 6333 if (status) 6334 goto out; 6335 status = decode_sequence(xdr, &res->seq_res, rqstp); 6336 if (status) 6337 goto out; 6338 status = decode_putfh(xdr); 6339 if (status) 6340 goto out; 6341 status = decode_read(xdr, rqstp, res); 6342 if (!status) 6343 status = res->count; 6344 out: 6345 return status; 6346 } 6347 6348 /* 6349 * Decode WRITE response 6350 */ 6351 static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6352 struct nfs_writeres *res) 6353 { 6354 struct compound_hdr hdr; 6355 int status; 6356 6357 status = decode_compound_hdr(xdr, &hdr); 6358 if (status) 6359 goto out; 6360 status = decode_sequence(xdr, &res->seq_res, rqstp); 6361 if (status) 6362 goto out; 6363 status = decode_putfh(xdr); 6364 if (status) 6365 goto out; 6366 status = decode_write(xdr, res); 6367 if (status) 6368 goto out; 6369 if (res->fattr) 6370 decode_getfattr(xdr, res->fattr, res->server); 6371 if (!status) 6372 status = res->count; 6373 out: 6374 return status; 6375 } 6376 6377 /* 6378 * Decode COMMIT response 6379 */ 6380 static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6381 struct nfs_writeres *res) 6382 { 6383 struct compound_hdr hdr; 6384 int status; 6385 6386 status = decode_compound_hdr(xdr, &hdr); 6387 if (status) 6388 goto out; 6389 status = decode_sequence(xdr, &res->seq_res, rqstp); 6390 if (status) 6391 goto out; 6392 status = decode_putfh(xdr); 6393 if (status) 6394 goto out; 6395 status = decode_commit(xdr, res); 6396 if (status) 6397 goto out; 6398 if (res->fattr) 6399 decode_getfattr(xdr, res->fattr, res->server); 6400 out: 6401 return status; 6402 } 6403 6404 /* 6405 * Decode FSINFO response 6406 */ 6407 static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr, 6408 struct nfs4_fsinfo_res *res) 6409 { 6410 struct compound_hdr hdr; 6411 int status; 6412 6413 status = decode_compound_hdr(xdr, &hdr); 6414 if (!status) 6415 status = decode_sequence(xdr, &res->seq_res, req); 6416 if (!status) 6417 status = decode_putfh(xdr); 6418 if (!status) 6419 status = decode_fsinfo(xdr, res->fsinfo); 6420 return status; 6421 } 6422 6423 /* 6424 * Decode PATHCONF response 6425 */ 6426 static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr, 6427 struct nfs4_pathconf_res *res) 6428 { 6429 struct compound_hdr hdr; 6430 int status; 6431 6432 status = decode_compound_hdr(xdr, &hdr); 6433 if (!status) 6434 status = decode_sequence(xdr, &res->seq_res, req); 6435 if (!status) 6436 status = decode_putfh(xdr); 6437 if (!status) 6438 status = decode_pathconf(xdr, res->pathconf); 6439 return status; 6440 } 6441 6442 /* 6443 * Decode STATFS response 6444 */ 6445 static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, struct xdr_stream *xdr, 6446 struct nfs4_statfs_res *res) 6447 { 6448 struct compound_hdr hdr; 6449 int status; 6450 6451 status = decode_compound_hdr(xdr, &hdr); 6452 if (!status) 6453 status = decode_sequence(xdr, &res->seq_res, req); 6454 if (!status) 6455 status = decode_putfh(xdr); 6456 if (!status) 6457 status = decode_statfs(xdr, res->fsstat); 6458 return status; 6459 } 6460 6461 /* 6462 * Decode GETATTR_BITMAP response 6463 */ 6464 static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req, 6465 struct xdr_stream *xdr, 6466 struct nfs4_server_caps_res *res) 6467 { 6468 struct compound_hdr hdr; 6469 int status; 6470 6471 status = decode_compound_hdr(xdr, &hdr); 6472 if (status) 6473 goto out; 6474 status = decode_sequence(xdr, &res->seq_res, req); 6475 if (status) 6476 goto out; 6477 status = decode_putfh(xdr); 6478 if (status) 6479 goto out; 6480 status = decode_server_caps(xdr, res); 6481 out: 6482 return status; 6483 } 6484 6485 /* 6486 * Decode RENEW response 6487 */ 6488 static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6489 void *__unused) 6490 { 6491 struct compound_hdr hdr; 6492 int status; 6493 6494 status = decode_compound_hdr(xdr, &hdr); 6495 if (!status) 6496 status = decode_renew(xdr); 6497 return status; 6498 } 6499 6500 /* 6501 * Decode SETCLIENTID response 6502 */ 6503 static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req, 6504 struct xdr_stream *xdr, 6505 struct nfs4_setclientid_res *res) 6506 { 6507 struct compound_hdr hdr; 6508 int status; 6509 6510 status = decode_compound_hdr(xdr, &hdr); 6511 if (!status) 6512 status = decode_setclientid(xdr, res); 6513 return status; 6514 } 6515 6516 /* 6517 * Decode SETCLIENTID_CONFIRM response 6518 */ 6519 static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req, 6520 struct xdr_stream *xdr, 6521 struct nfs_fsinfo *fsinfo) 6522 { 6523 struct compound_hdr hdr; 6524 int status; 6525 6526 status = decode_compound_hdr(xdr, &hdr); 6527 if (!status) 6528 status = decode_setclientid_confirm(xdr); 6529 if (!status) 6530 status = decode_putrootfh(xdr); 6531 if (!status) 6532 status = decode_fsinfo(xdr, fsinfo); 6533 return status; 6534 } 6535 6536 /* 6537 * Decode DELEGRETURN response 6538 */ 6539 static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp, 6540 struct xdr_stream *xdr, 6541 struct nfs4_delegreturnres *res) 6542 { 6543 struct compound_hdr hdr; 6544 int status; 6545 6546 status = decode_compound_hdr(xdr, &hdr); 6547 if (status) 6548 goto out; 6549 status = decode_sequence(xdr, &res->seq_res, rqstp); 6550 if (status) 6551 goto out; 6552 status = decode_putfh(xdr); 6553 if (status != 0) 6554 goto out; 6555 status = decode_delegreturn(xdr); 6556 if (status != 0) 6557 goto out; 6558 decode_getfattr(xdr, res->fattr, res->server); 6559 out: 6560 return status; 6561 } 6562 6563 /* 6564 * Decode FS_LOCATIONS response 6565 */ 6566 static int nfs4_xdr_dec_fs_locations(struct rpc_rqst *req, 6567 struct xdr_stream *xdr, 6568 struct nfs4_fs_locations_res *res) 6569 { 6570 struct compound_hdr hdr; 6571 int status; 6572 6573 status = decode_compound_hdr(xdr, &hdr); 6574 if (status) 6575 goto out; 6576 status = decode_sequence(xdr, &res->seq_res, req); 6577 if (status) 6578 goto out; 6579 status = decode_putfh(xdr); 6580 if (status) 6581 goto out; 6582 status = decode_lookup(xdr); 6583 if (status) 6584 goto out; 6585 xdr_enter_page(xdr, PAGE_SIZE); 6586 status = decode_getfattr(xdr, &res->fs_locations->fattr, 6587 res->fs_locations->server); 6588 out: 6589 return status; 6590 } 6591 6592 /* 6593 * Decode SECINFO response 6594 */ 6595 static int nfs4_xdr_dec_secinfo(struct rpc_rqst *rqstp, 6596 struct xdr_stream *xdr, 6597 struct nfs4_secinfo_res *res) 6598 { 6599 struct compound_hdr hdr; 6600 int status; 6601 6602 status = decode_compound_hdr(xdr, &hdr); 6603 if (status) 6604 goto out; 6605 status = decode_sequence(xdr, &res->seq_res, rqstp); 6606 if (status) 6607 goto out; 6608 status = decode_putfh(xdr); 6609 if (status) 6610 goto out; 6611 status = decode_secinfo(xdr, res); 6612 out: 6613 return status; 6614 } 6615 6616 #if defined(CONFIG_NFS_V4_1) 6617 /* 6618 * Decode EXCHANGE_ID response 6619 */ 6620 static int nfs4_xdr_dec_exchange_id(struct rpc_rqst *rqstp, 6621 struct xdr_stream *xdr, 6622 void *res) 6623 { 6624 struct compound_hdr hdr; 6625 int status; 6626 6627 status = decode_compound_hdr(xdr, &hdr); 6628 if (!status) 6629 status = decode_exchange_id(xdr, res); 6630 return status; 6631 } 6632 6633 /* 6634 * Decode CREATE_SESSION response 6635 */ 6636 static int nfs4_xdr_dec_create_session(struct rpc_rqst *rqstp, 6637 struct xdr_stream *xdr, 6638 struct nfs41_create_session_res *res) 6639 { 6640 struct compound_hdr hdr; 6641 int status; 6642 6643 status = decode_compound_hdr(xdr, &hdr); 6644 if (!status) 6645 status = decode_create_session(xdr, res); 6646 return status; 6647 } 6648 6649 /* 6650 * Decode DESTROY_SESSION response 6651 */ 6652 static int nfs4_xdr_dec_destroy_session(struct rpc_rqst *rqstp, 6653 struct xdr_stream *xdr, 6654 void *res) 6655 { 6656 struct compound_hdr hdr; 6657 int status; 6658 6659 status = decode_compound_hdr(xdr, &hdr); 6660 if (!status) 6661 status = decode_destroy_session(xdr, res); 6662 return status; 6663 } 6664 6665 /* 6666 * Decode SEQUENCE response 6667 */ 6668 static int nfs4_xdr_dec_sequence(struct rpc_rqst *rqstp, 6669 struct xdr_stream *xdr, 6670 struct nfs4_sequence_res *res) 6671 { 6672 struct compound_hdr hdr; 6673 int status; 6674 6675 status = decode_compound_hdr(xdr, &hdr); 6676 if (!status) 6677 status = decode_sequence(xdr, res, rqstp); 6678 return status; 6679 } 6680 6681 /* 6682 * Decode GET_LEASE_TIME response 6683 */ 6684 static int nfs4_xdr_dec_get_lease_time(struct rpc_rqst *rqstp, 6685 struct xdr_stream *xdr, 6686 struct nfs4_get_lease_time_res *res) 6687 { 6688 struct compound_hdr hdr; 6689 int status; 6690 6691 status = decode_compound_hdr(xdr, &hdr); 6692 if (!status) 6693 status = decode_sequence(xdr, &res->lr_seq_res, rqstp); 6694 if (!status) 6695 status = decode_putrootfh(xdr); 6696 if (!status) 6697 status = decode_fsinfo(xdr, res->lr_fsinfo); 6698 return status; 6699 } 6700 6701 /* 6702 * Decode RECLAIM_COMPLETE response 6703 */ 6704 static int nfs4_xdr_dec_reclaim_complete(struct rpc_rqst *rqstp, 6705 struct xdr_stream *xdr, 6706 struct nfs41_reclaim_complete_res *res) 6707 { 6708 struct compound_hdr hdr; 6709 int status; 6710 6711 status = decode_compound_hdr(xdr, &hdr); 6712 if (!status) 6713 status = decode_sequence(xdr, &res->seq_res, rqstp); 6714 if (!status) 6715 status = decode_reclaim_complete(xdr, (void *)NULL); 6716 return status; 6717 } 6718 6719 /* 6720 * Decode GETDEVICELIST response 6721 */ 6722 static int nfs4_xdr_dec_getdevicelist(struct rpc_rqst *rqstp, 6723 struct xdr_stream *xdr, 6724 struct nfs4_getdevicelist_res *res) 6725 { 6726 struct compound_hdr hdr; 6727 int status; 6728 6729 dprintk("encoding getdevicelist!\n"); 6730 6731 status = decode_compound_hdr(xdr, &hdr); 6732 if (status != 0) 6733 goto out; 6734 status = decode_sequence(xdr, &res->seq_res, rqstp); 6735 if (status != 0) 6736 goto out; 6737 status = decode_putfh(xdr); 6738 if (status != 0) 6739 goto out; 6740 status = decode_getdevicelist(xdr, res->devlist); 6741 out: 6742 return status; 6743 } 6744 6745 /* 6746 * Decode GETDEVINFO response 6747 */ 6748 static int nfs4_xdr_dec_getdeviceinfo(struct rpc_rqst *rqstp, 6749 struct xdr_stream *xdr, 6750 struct nfs4_getdeviceinfo_res *res) 6751 { 6752 struct compound_hdr hdr; 6753 int status; 6754 6755 status = decode_compound_hdr(xdr, &hdr); 6756 if (status != 0) 6757 goto out; 6758 status = decode_sequence(xdr, &res->seq_res, rqstp); 6759 if (status != 0) 6760 goto out; 6761 status = decode_getdeviceinfo(xdr, res->pdev); 6762 out: 6763 return status; 6764 } 6765 6766 /* 6767 * Decode LAYOUTGET response 6768 */ 6769 static int nfs4_xdr_dec_layoutget(struct rpc_rqst *rqstp, 6770 struct xdr_stream *xdr, 6771 struct nfs4_layoutget_res *res) 6772 { 6773 struct compound_hdr hdr; 6774 int status; 6775 6776 status = decode_compound_hdr(xdr, &hdr); 6777 if (status) 6778 goto out; 6779 status = decode_sequence(xdr, &res->seq_res, rqstp); 6780 if (status) 6781 goto out; 6782 status = decode_putfh(xdr); 6783 if (status) 6784 goto out; 6785 status = decode_layoutget(xdr, rqstp, res); 6786 out: 6787 return status; 6788 } 6789 6790 /* 6791 * Decode LAYOUTRETURN response 6792 */ 6793 static int nfs4_xdr_dec_layoutreturn(struct rpc_rqst *rqstp, 6794 struct xdr_stream *xdr, 6795 struct nfs4_layoutreturn_res *res) 6796 { 6797 struct compound_hdr hdr; 6798 int status; 6799 6800 status = decode_compound_hdr(xdr, &hdr); 6801 if (status) 6802 goto out; 6803 status = decode_sequence(xdr, &res->seq_res, rqstp); 6804 if (status) 6805 goto out; 6806 status = decode_putfh(xdr); 6807 if (status) 6808 goto out; 6809 status = decode_layoutreturn(xdr, res); 6810 out: 6811 return status; 6812 } 6813 6814 /* 6815 * Decode LAYOUTCOMMIT response 6816 */ 6817 static int nfs4_xdr_dec_layoutcommit(struct rpc_rqst *rqstp, 6818 struct xdr_stream *xdr, 6819 struct nfs4_layoutcommit_res *res) 6820 { 6821 struct compound_hdr hdr; 6822 int status; 6823 6824 status = decode_compound_hdr(xdr, &hdr); 6825 if (status) 6826 goto out; 6827 status = decode_sequence(xdr, &res->seq_res, rqstp); 6828 if (status) 6829 goto out; 6830 status = decode_putfh(xdr); 6831 if (status) 6832 goto out; 6833 status = decode_layoutcommit(xdr, rqstp, res); 6834 if (status) 6835 goto out; 6836 decode_getfattr(xdr, res->fattr, res->server); 6837 out: 6838 return status; 6839 } 6840 6841 /* 6842 * Decode SECINFO_NO_NAME response 6843 */ 6844 static int nfs4_xdr_dec_secinfo_no_name(struct rpc_rqst *rqstp, 6845 struct xdr_stream *xdr, 6846 struct nfs4_secinfo_res *res) 6847 { 6848 struct compound_hdr hdr; 6849 int status; 6850 6851 status = decode_compound_hdr(xdr, &hdr); 6852 if (status) 6853 goto out; 6854 status = decode_sequence(xdr, &res->seq_res, rqstp); 6855 if (status) 6856 goto out; 6857 status = decode_putrootfh(xdr); 6858 if (status) 6859 goto out; 6860 status = decode_secinfo(xdr, res); 6861 out: 6862 return status; 6863 } 6864 6865 /* 6866 * Decode TEST_STATEID response 6867 */ 6868 static int nfs4_xdr_dec_test_stateid(struct rpc_rqst *rqstp, 6869 struct xdr_stream *xdr, 6870 struct nfs41_test_stateid_res *res) 6871 { 6872 struct compound_hdr hdr; 6873 int status; 6874 6875 status = decode_compound_hdr(xdr, &hdr); 6876 if (status) 6877 goto out; 6878 status = decode_sequence(xdr, &res->seq_res, rqstp); 6879 if (status) 6880 goto out; 6881 status = decode_test_stateid(xdr, res); 6882 out: 6883 return status; 6884 } 6885 6886 /* 6887 * Decode FREE_STATEID response 6888 */ 6889 static int nfs4_xdr_dec_free_stateid(struct rpc_rqst *rqstp, 6890 struct xdr_stream *xdr, 6891 struct nfs41_free_stateid_res *res) 6892 { 6893 struct compound_hdr hdr; 6894 int status; 6895 6896 status = decode_compound_hdr(xdr, &hdr); 6897 if (status) 6898 goto out; 6899 status = decode_sequence(xdr, &res->seq_res, rqstp); 6900 if (status) 6901 goto out; 6902 status = decode_free_stateid(xdr, res); 6903 out: 6904 return status; 6905 } 6906 #endif /* CONFIG_NFS_V4_1 */ 6907 6908 /** 6909 * nfs4_decode_dirent - Decode a single NFSv4 directory entry stored in 6910 * the local page cache. 6911 * @xdr: XDR stream where entry resides 6912 * @entry: buffer to fill in with entry data 6913 * @plus: boolean indicating whether this should be a readdirplus entry 6914 * 6915 * Returns zero if successful, otherwise a negative errno value is 6916 * returned. 6917 * 6918 * This function is not invoked during READDIR reply decoding, but 6919 * rather whenever an application invokes the getdents(2) system call 6920 * on a directory already in our cache. 6921 */ 6922 int nfs4_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry, 6923 int plus) 6924 { 6925 uint32_t bitmap[3] = {0}; 6926 uint32_t len; 6927 __be32 *p = xdr_inline_decode(xdr, 4); 6928 if (unlikely(!p)) 6929 goto out_overflow; 6930 if (*p == xdr_zero) { 6931 p = xdr_inline_decode(xdr, 4); 6932 if (unlikely(!p)) 6933 goto out_overflow; 6934 if (*p == xdr_zero) 6935 return -EAGAIN; 6936 entry->eof = 1; 6937 return -EBADCOOKIE; 6938 } 6939 6940 p = xdr_inline_decode(xdr, 12); 6941 if (unlikely(!p)) 6942 goto out_overflow; 6943 entry->prev_cookie = entry->cookie; 6944 p = xdr_decode_hyper(p, &entry->cookie); 6945 entry->len = be32_to_cpup(p); 6946 6947 p = xdr_inline_decode(xdr, entry->len); 6948 if (unlikely(!p)) 6949 goto out_overflow; 6950 entry->name = (const char *) p; 6951 6952 /* 6953 * In case the server doesn't return an inode number, 6954 * we fake one here. (We don't use inode number 0, 6955 * since glibc seems to choke on it...) 6956 */ 6957 entry->ino = 1; 6958 entry->fattr->valid = 0; 6959 6960 if (decode_attr_bitmap(xdr, bitmap) < 0) 6961 goto out_overflow; 6962 6963 if (decode_attr_length(xdr, &len, &p) < 0) 6964 goto out_overflow; 6965 6966 if (decode_getfattr_attrs(xdr, bitmap, entry->fattr, entry->fh, 6967 entry->server) < 0) 6968 goto out_overflow; 6969 if (entry->fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID) 6970 entry->ino = entry->fattr->mounted_on_fileid; 6971 else if (entry->fattr->valid & NFS_ATTR_FATTR_FILEID) 6972 entry->ino = entry->fattr->fileid; 6973 6974 entry->d_type = DT_UNKNOWN; 6975 if (entry->fattr->valid & NFS_ATTR_FATTR_TYPE) 6976 entry->d_type = nfs_umode_to_dtype(entry->fattr->mode); 6977 6978 return 0; 6979 6980 out_overflow: 6981 print_overflow_msg(__func__, xdr); 6982 return -EAGAIN; 6983 } 6984 6985 /* 6986 * We need to translate between nfs status return values and 6987 * the local errno values which may not be the same. 6988 */ 6989 static struct { 6990 int stat; 6991 int errno; 6992 } nfs_errtbl[] = { 6993 { NFS4_OK, 0 }, 6994 { NFS4ERR_PERM, -EPERM }, 6995 { NFS4ERR_NOENT, -ENOENT }, 6996 { NFS4ERR_IO, -errno_NFSERR_IO}, 6997 { NFS4ERR_NXIO, -ENXIO }, 6998 { NFS4ERR_ACCESS, -EACCES }, 6999 { NFS4ERR_EXIST, -EEXIST }, 7000 { NFS4ERR_XDEV, -EXDEV }, 7001 { NFS4ERR_NOTDIR, -ENOTDIR }, 7002 { NFS4ERR_ISDIR, -EISDIR }, 7003 { NFS4ERR_INVAL, -EINVAL }, 7004 { NFS4ERR_FBIG, -EFBIG }, 7005 { NFS4ERR_NOSPC, -ENOSPC }, 7006 { NFS4ERR_ROFS, -EROFS }, 7007 { NFS4ERR_MLINK, -EMLINK }, 7008 { NFS4ERR_NAMETOOLONG, -ENAMETOOLONG }, 7009 { NFS4ERR_NOTEMPTY, -ENOTEMPTY }, 7010 { NFS4ERR_DQUOT, -EDQUOT }, 7011 { NFS4ERR_STALE, -ESTALE }, 7012 { NFS4ERR_BADHANDLE, -EBADHANDLE }, 7013 { NFS4ERR_BAD_COOKIE, -EBADCOOKIE }, 7014 { NFS4ERR_NOTSUPP, -ENOTSUPP }, 7015 { NFS4ERR_TOOSMALL, -ETOOSMALL }, 7016 { NFS4ERR_SERVERFAULT, -EREMOTEIO }, 7017 { NFS4ERR_BADTYPE, -EBADTYPE }, 7018 { NFS4ERR_LOCKED, -EAGAIN }, 7019 { NFS4ERR_SYMLINK, -ELOOP }, 7020 { NFS4ERR_OP_ILLEGAL, -EOPNOTSUPP }, 7021 { NFS4ERR_DEADLOCK, -EDEADLK }, 7022 { -1, -EIO } 7023 }; 7024 7025 /* 7026 * Convert an NFS error code to a local one. 7027 * This one is used jointly by NFSv2 and NFSv3. 7028 */ 7029 static int 7030 nfs4_stat_to_errno(int stat) 7031 { 7032 int i; 7033 for (i = 0; nfs_errtbl[i].stat != -1; i++) { 7034 if (nfs_errtbl[i].stat == stat) 7035 return nfs_errtbl[i].errno; 7036 } 7037 if (stat <= 10000 || stat > 10100) { 7038 /* The server is looney tunes. */ 7039 return -EREMOTEIO; 7040 } 7041 /* If we cannot translate the error, the recovery routines should 7042 * handle it. 7043 * Note: remaining NFSv4 error codes have values > 10000, so should 7044 * not conflict with native Linux error codes. 7045 */ 7046 return -stat; 7047 } 7048 7049 #define PROC(proc, argtype, restype) \ 7050 [NFSPROC4_CLNT_##proc] = { \ 7051 .p_proc = NFSPROC4_COMPOUND, \ 7052 .p_encode = (kxdreproc_t)nfs4_xdr_##argtype, \ 7053 .p_decode = (kxdrdproc_t)nfs4_xdr_##restype, \ 7054 .p_arglen = NFS4_##argtype##_sz, \ 7055 .p_replen = NFS4_##restype##_sz, \ 7056 .p_statidx = NFSPROC4_CLNT_##proc, \ 7057 .p_name = #proc, \ 7058 } 7059 7060 struct rpc_procinfo nfs4_procedures[] = { 7061 PROC(READ, enc_read, dec_read), 7062 PROC(WRITE, enc_write, dec_write), 7063 PROC(COMMIT, enc_commit, dec_commit), 7064 PROC(OPEN, enc_open, dec_open), 7065 PROC(OPEN_CONFIRM, enc_open_confirm, dec_open_confirm), 7066 PROC(OPEN_NOATTR, enc_open_noattr, dec_open_noattr), 7067 PROC(OPEN_DOWNGRADE, enc_open_downgrade, dec_open_downgrade), 7068 PROC(CLOSE, enc_close, dec_close), 7069 PROC(SETATTR, enc_setattr, dec_setattr), 7070 PROC(FSINFO, enc_fsinfo, dec_fsinfo), 7071 PROC(RENEW, enc_renew, dec_renew), 7072 PROC(SETCLIENTID, enc_setclientid, dec_setclientid), 7073 PROC(SETCLIENTID_CONFIRM, enc_setclientid_confirm, dec_setclientid_confirm), 7074 PROC(LOCK, enc_lock, dec_lock), 7075 PROC(LOCKT, enc_lockt, dec_lockt), 7076 PROC(LOCKU, enc_locku, dec_locku), 7077 PROC(ACCESS, enc_access, dec_access), 7078 PROC(GETATTR, enc_getattr, dec_getattr), 7079 PROC(LOOKUP, enc_lookup, dec_lookup), 7080 PROC(LOOKUP_ROOT, enc_lookup_root, dec_lookup_root), 7081 PROC(REMOVE, enc_remove, dec_remove), 7082 PROC(RENAME, enc_rename, dec_rename), 7083 PROC(LINK, enc_link, dec_link), 7084 PROC(SYMLINK, enc_symlink, dec_symlink), 7085 PROC(CREATE, enc_create, dec_create), 7086 PROC(PATHCONF, enc_pathconf, dec_pathconf), 7087 PROC(STATFS, enc_statfs, dec_statfs), 7088 PROC(READLINK, enc_readlink, dec_readlink), 7089 PROC(READDIR, enc_readdir, dec_readdir), 7090 PROC(SERVER_CAPS, enc_server_caps, dec_server_caps), 7091 PROC(DELEGRETURN, enc_delegreturn, dec_delegreturn), 7092 PROC(GETACL, enc_getacl, dec_getacl), 7093 PROC(SETACL, enc_setacl, dec_setacl), 7094 PROC(FS_LOCATIONS, enc_fs_locations, dec_fs_locations), 7095 PROC(RELEASE_LOCKOWNER, enc_release_lockowner, dec_release_lockowner), 7096 PROC(SECINFO, enc_secinfo, dec_secinfo), 7097 #if defined(CONFIG_NFS_V4_1) 7098 PROC(EXCHANGE_ID, enc_exchange_id, dec_exchange_id), 7099 PROC(CREATE_SESSION, enc_create_session, dec_create_session), 7100 PROC(DESTROY_SESSION, enc_destroy_session, dec_destroy_session), 7101 PROC(SEQUENCE, enc_sequence, dec_sequence), 7102 PROC(GET_LEASE_TIME, enc_get_lease_time, dec_get_lease_time), 7103 PROC(RECLAIM_COMPLETE, enc_reclaim_complete, dec_reclaim_complete), 7104 PROC(GETDEVICEINFO, enc_getdeviceinfo, dec_getdeviceinfo), 7105 PROC(LAYOUTGET, enc_layoutget, dec_layoutget), 7106 PROC(LAYOUTCOMMIT, enc_layoutcommit, dec_layoutcommit), 7107 PROC(LAYOUTRETURN, enc_layoutreturn, dec_layoutreturn), 7108 PROC(SECINFO_NO_NAME, enc_secinfo_no_name, dec_secinfo_no_name), 7109 PROC(TEST_STATEID, enc_test_stateid, dec_test_stateid), 7110 PROC(FREE_STATEID, enc_free_stateid, dec_free_stateid), 7111 PROC(GETDEVICELIST, enc_getdevicelist, dec_getdevicelist), 7112 #endif /* CONFIG_NFS_V4_1 */ 7113 }; 7114 7115 struct rpc_version nfs_version4 = { 7116 .number = 4, 7117 .nrprocs = ARRAY_SIZE(nfs4_procedures), 7118 .procs = nfs4_procedures 7119 }; 7120 7121 /* 7122 * Local variables: 7123 * c-basic-offset: 8 7124 * End: 7125 */ 7126