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/module.h> 48 #include <linux/utsname.h> 49 #include <linux/sunrpc/clnt.h> 50 #include <linux/sunrpc/msg_prot.h> 51 #include <linux/sunrpc/gss_api.h> 52 #include <linux/nfs.h> 53 #include <linux/nfs4.h> 54 #include <linux/nfs_fs.h> 55 #include <linux/fs_struct.h> 56 57 #include "nfs4_fs.h" 58 #include "internal.h" 59 #include "nfs4idmap.h" 60 #include "nfs4session.h" 61 #include "pnfs.h" 62 #include "netns.h" 63 64 #define NFSDBG_FACILITY NFSDBG_XDR 65 66 /* Mapping from NFS error code to "errno" error code. */ 67 #define errno_NFSERR_IO EIO 68 69 static int nfs4_stat_to_errno(int); 70 71 /* NFSv4 COMPOUND tags are only wanted for debugging purposes */ 72 #ifdef DEBUG 73 #define NFS4_MAXTAGLEN 20 74 #else 75 #define NFS4_MAXTAGLEN 0 76 #endif 77 78 /* lock,open owner id: 79 * we currently use size 2 (u64) out of (NFS4_OPAQUE_LIMIT >> 2) 80 */ 81 #define open_owner_id_maxsz (1 + 2 + 1 + 1 + 2) 82 #define lock_owner_id_maxsz (1 + 1 + 4) 83 #define decode_lockowner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ)) 84 #define compound_encode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2)) 85 #define compound_decode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2)) 86 #define op_encode_hdr_maxsz (1) 87 #define op_decode_hdr_maxsz (2) 88 #define encode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE)) 89 #define decode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE)) 90 #define encode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE)) 91 #define decode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE)) 92 #define encode_putfh_maxsz (op_encode_hdr_maxsz + 1 + \ 93 (NFS4_FHSIZE >> 2)) 94 #define decode_putfh_maxsz (op_decode_hdr_maxsz) 95 #define encode_putrootfh_maxsz (op_encode_hdr_maxsz) 96 #define decode_putrootfh_maxsz (op_decode_hdr_maxsz) 97 #define encode_getfh_maxsz (op_encode_hdr_maxsz) 98 #define decode_getfh_maxsz (op_decode_hdr_maxsz + 1 + \ 99 ((3+NFS4_FHSIZE) >> 2)) 100 #define nfs4_fattr_bitmap_maxsz 4 101 #define encode_getattr_maxsz (op_encode_hdr_maxsz + nfs4_fattr_bitmap_maxsz) 102 #define nfs4_name_maxsz (1 + ((3 + NFS4_MAXNAMLEN) >> 2)) 103 #define nfs4_path_maxsz (1 + ((3 + NFS4_MAXPATHLEN) >> 2)) 104 #define nfs4_owner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ)) 105 #define nfs4_group_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ)) 106 #ifdef CONFIG_NFS_V4_SECURITY_LABEL 107 /* PI(4 bytes) + LFS(4 bytes) + 1(for null terminator?) + MAXLABELLEN */ 108 #define nfs4_label_maxsz (4 + 4 + 1 + XDR_QUADLEN(NFS4_MAXLABELLEN)) 109 #else 110 #define nfs4_label_maxsz 0 111 #endif 112 /* We support only one layout type per file system */ 113 #define decode_mdsthreshold_maxsz (1 + 1 + nfs4_fattr_bitmap_maxsz + 1 + 8) 114 /* This is based on getfattr, which uses the most attributes: */ 115 #define nfs4_fattr_value_maxsz (1 + (1 + 2 + 2 + 4 + 2 + 1 + 1 + 2 + 2 + \ 116 3 + 3 + 3 + nfs4_owner_maxsz + \ 117 nfs4_group_maxsz + nfs4_label_maxsz + \ 118 decode_mdsthreshold_maxsz)) 119 #define nfs4_fattr_maxsz (nfs4_fattr_bitmap_maxsz + \ 120 nfs4_fattr_value_maxsz) 121 #define decode_getattr_maxsz (op_decode_hdr_maxsz + nfs4_fattr_maxsz) 122 #define encode_attrs_maxsz (nfs4_fattr_bitmap_maxsz + \ 123 1 + 2 + 1 + \ 124 nfs4_owner_maxsz + \ 125 nfs4_group_maxsz + \ 126 nfs4_label_maxsz + \ 127 4 + 4) 128 #define encode_savefh_maxsz (op_encode_hdr_maxsz) 129 #define decode_savefh_maxsz (op_decode_hdr_maxsz) 130 #define encode_restorefh_maxsz (op_encode_hdr_maxsz) 131 #define decode_restorefh_maxsz (op_decode_hdr_maxsz) 132 #define encode_fsinfo_maxsz (encode_getattr_maxsz) 133 /* The 5 accounts for the PNFS attributes, and assumes that at most three 134 * layout types will be returned. 135 */ 136 #define decode_fsinfo_maxsz (op_decode_hdr_maxsz + \ 137 nfs4_fattr_bitmap_maxsz + 4 + 8 + 5) 138 #define encode_renew_maxsz (op_encode_hdr_maxsz + 3) 139 #define decode_renew_maxsz (op_decode_hdr_maxsz) 140 #define encode_setclientid_maxsz \ 141 (op_encode_hdr_maxsz + \ 142 XDR_QUADLEN(NFS4_VERIFIER_SIZE) + \ 143 /* client name */ \ 144 1 + XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \ 145 1 /* sc_prog */ + \ 146 1 + XDR_QUADLEN(RPCBIND_MAXNETIDLEN) + \ 147 1 + XDR_QUADLEN(RPCBIND_MAXUADDRLEN) + \ 148 1) /* sc_cb_ident */ 149 #define decode_setclientid_maxsz \ 150 (op_decode_hdr_maxsz + \ 151 2 /* clientid */ + \ 152 XDR_QUADLEN(NFS4_VERIFIER_SIZE) + \ 153 1 + XDR_QUADLEN(RPCBIND_MAXNETIDLEN) + \ 154 1 + XDR_QUADLEN(RPCBIND_MAXUADDRLEN)) 155 #define encode_setclientid_confirm_maxsz \ 156 (op_encode_hdr_maxsz + \ 157 3 + (NFS4_VERIFIER_SIZE >> 2)) 158 #define decode_setclientid_confirm_maxsz \ 159 (op_decode_hdr_maxsz) 160 #define encode_lookup_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz) 161 #define decode_lookup_maxsz (op_decode_hdr_maxsz) 162 #define encode_lookupp_maxsz (op_encode_hdr_maxsz) 163 #define decode_lookupp_maxsz (op_decode_hdr_maxsz) 164 #define encode_share_access_maxsz \ 165 (2) 166 #define encode_createmode_maxsz (1 + encode_attrs_maxsz + encode_verifier_maxsz) 167 #define encode_opentype_maxsz (1 + encode_createmode_maxsz) 168 #define encode_claim_null_maxsz (1 + nfs4_name_maxsz) 169 #define encode_open_maxsz (op_encode_hdr_maxsz + \ 170 2 + encode_share_access_maxsz + 2 + \ 171 open_owner_id_maxsz + \ 172 encode_opentype_maxsz + \ 173 encode_claim_null_maxsz) 174 #define decode_space_limit_maxsz (3) 175 #define decode_ace_maxsz (3 + nfs4_owner_maxsz) 176 #define decode_delegation_maxsz (1 + decode_stateid_maxsz + 1 + \ 177 decode_space_limit_maxsz + \ 178 decode_ace_maxsz) 179 #define decode_change_info_maxsz (5) 180 #define decode_open_maxsz (op_decode_hdr_maxsz + \ 181 decode_stateid_maxsz + \ 182 decode_change_info_maxsz + 1 + \ 183 nfs4_fattr_bitmap_maxsz + \ 184 decode_delegation_maxsz) 185 #define encode_open_confirm_maxsz \ 186 (op_encode_hdr_maxsz + \ 187 encode_stateid_maxsz + 1) 188 #define decode_open_confirm_maxsz \ 189 (op_decode_hdr_maxsz + \ 190 decode_stateid_maxsz) 191 #define encode_open_downgrade_maxsz \ 192 (op_encode_hdr_maxsz + \ 193 encode_stateid_maxsz + 1 + \ 194 encode_share_access_maxsz) 195 #define decode_open_downgrade_maxsz \ 196 (op_decode_hdr_maxsz + \ 197 decode_stateid_maxsz) 198 #define encode_close_maxsz (op_encode_hdr_maxsz + \ 199 1 + encode_stateid_maxsz) 200 #define decode_close_maxsz (op_decode_hdr_maxsz + \ 201 decode_stateid_maxsz) 202 #define encode_setattr_maxsz (op_encode_hdr_maxsz + \ 203 encode_stateid_maxsz + \ 204 encode_attrs_maxsz) 205 #define decode_setattr_maxsz (op_decode_hdr_maxsz + \ 206 nfs4_fattr_bitmap_maxsz) 207 #define encode_read_maxsz (op_encode_hdr_maxsz + \ 208 encode_stateid_maxsz + 3) 209 #define decode_read_maxsz (op_decode_hdr_maxsz + 2) 210 #define encode_readdir_maxsz (op_encode_hdr_maxsz + \ 211 2 + encode_verifier_maxsz + 5 + \ 212 nfs4_label_maxsz) 213 #define decode_readdir_maxsz (op_decode_hdr_maxsz + \ 214 decode_verifier_maxsz) 215 #define encode_readlink_maxsz (op_encode_hdr_maxsz) 216 #define decode_readlink_maxsz (op_decode_hdr_maxsz + 1) 217 #define encode_write_maxsz (op_encode_hdr_maxsz + \ 218 encode_stateid_maxsz + 4) 219 #define decode_write_maxsz (op_decode_hdr_maxsz + \ 220 2 + decode_verifier_maxsz) 221 #define encode_commit_maxsz (op_encode_hdr_maxsz + 3) 222 #define decode_commit_maxsz (op_decode_hdr_maxsz + \ 223 decode_verifier_maxsz) 224 #define encode_remove_maxsz (op_encode_hdr_maxsz + \ 225 nfs4_name_maxsz) 226 #define decode_remove_maxsz (op_decode_hdr_maxsz + \ 227 decode_change_info_maxsz) 228 #define encode_rename_maxsz (op_encode_hdr_maxsz + \ 229 2 * nfs4_name_maxsz) 230 #define decode_rename_maxsz (op_decode_hdr_maxsz + \ 231 decode_change_info_maxsz + \ 232 decode_change_info_maxsz) 233 #define encode_link_maxsz (op_encode_hdr_maxsz + \ 234 nfs4_name_maxsz) 235 #define decode_link_maxsz (op_decode_hdr_maxsz + decode_change_info_maxsz) 236 #define encode_lockowner_maxsz (7) 237 #define encode_lock_maxsz (op_encode_hdr_maxsz + \ 238 7 + \ 239 1 + encode_stateid_maxsz + 1 + \ 240 encode_lockowner_maxsz) 241 #define decode_lock_denied_maxsz \ 242 (8 + decode_lockowner_maxsz) 243 #define decode_lock_maxsz (op_decode_hdr_maxsz + \ 244 decode_lock_denied_maxsz) 245 #define encode_lockt_maxsz (op_encode_hdr_maxsz + 5 + \ 246 encode_lockowner_maxsz) 247 #define decode_lockt_maxsz (op_decode_hdr_maxsz + \ 248 decode_lock_denied_maxsz) 249 #define encode_locku_maxsz (op_encode_hdr_maxsz + 3 + \ 250 encode_stateid_maxsz + \ 251 4) 252 #define decode_locku_maxsz (op_decode_hdr_maxsz + \ 253 decode_stateid_maxsz) 254 #define encode_release_lockowner_maxsz \ 255 (op_encode_hdr_maxsz + \ 256 encode_lockowner_maxsz) 257 #define decode_release_lockowner_maxsz \ 258 (op_decode_hdr_maxsz) 259 #define encode_access_maxsz (op_encode_hdr_maxsz + 1) 260 #define decode_access_maxsz (op_decode_hdr_maxsz + 2) 261 #define encode_symlink_maxsz (op_encode_hdr_maxsz + \ 262 1 + nfs4_name_maxsz + \ 263 1 + \ 264 nfs4_fattr_maxsz) 265 #define decode_symlink_maxsz (op_decode_hdr_maxsz + 8) 266 #define encode_create_maxsz (op_encode_hdr_maxsz + \ 267 1 + 2 + nfs4_name_maxsz + \ 268 encode_attrs_maxsz) 269 #define decode_create_maxsz (op_decode_hdr_maxsz + \ 270 decode_change_info_maxsz + \ 271 nfs4_fattr_bitmap_maxsz) 272 #define encode_statfs_maxsz (encode_getattr_maxsz) 273 #define decode_statfs_maxsz (decode_getattr_maxsz) 274 #define encode_delegreturn_maxsz (op_encode_hdr_maxsz + 4) 275 #define decode_delegreturn_maxsz (op_decode_hdr_maxsz) 276 #define encode_getacl_maxsz (encode_getattr_maxsz) 277 #define decode_getacl_maxsz (op_decode_hdr_maxsz + \ 278 nfs4_fattr_bitmap_maxsz + 1) 279 #define encode_setacl_maxsz (op_encode_hdr_maxsz + \ 280 encode_stateid_maxsz + 3) 281 #define decode_setacl_maxsz (decode_setattr_maxsz) 282 #define encode_fs_locations_maxsz \ 283 (encode_getattr_maxsz) 284 #define decode_fs_locations_maxsz \ 285 (0) 286 #define encode_secinfo_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz) 287 #define decode_secinfo_maxsz (op_decode_hdr_maxsz + 1 + ((NFS_MAX_SECFLAVORS * (16 + GSS_OID_MAX_LEN)) / 4)) 288 289 #if defined(CONFIG_NFS_V4_1) 290 #define NFS4_MAX_MACHINE_NAME_LEN (64) 291 #define IMPL_NAME_LIMIT (sizeof(utsname()->sysname) + sizeof(utsname()->release) + \ 292 sizeof(utsname()->version) + sizeof(utsname()->machine) + 8) 293 294 #define encode_exchange_id_maxsz (op_encode_hdr_maxsz + \ 295 encode_verifier_maxsz + \ 296 1 /* co_ownerid.len */ + \ 297 /* eia_clientowner */ \ 298 1 + XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \ 299 1 /* flags */ + \ 300 1 /* spa_how */ + \ 301 /* max is SP4_MACH_CRED (for now) */ + \ 302 1 + NFS4_OP_MAP_NUM_WORDS + \ 303 1 + NFS4_OP_MAP_NUM_WORDS + \ 304 1 /* implementation id array of size 1 */ + \ 305 1 /* nii_domain */ + \ 306 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \ 307 1 /* nii_name */ + \ 308 XDR_QUADLEN(IMPL_NAME_LIMIT) + \ 309 3 /* nii_date */) 310 #define decode_exchange_id_maxsz (op_decode_hdr_maxsz + \ 311 2 /* eir_clientid */ + \ 312 1 /* eir_sequenceid */ + \ 313 1 /* eir_flags */ + \ 314 1 /* spr_how */ + \ 315 /* max is SP4_MACH_CRED (for now) */ + \ 316 1 + NFS4_OP_MAP_NUM_WORDS + \ 317 1 + NFS4_OP_MAP_NUM_WORDS + \ 318 2 /* eir_server_owner.so_minor_id */ + \ 319 /* eir_server_owner.so_major_id<> */ \ 320 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \ 321 /* eir_server_scope<> */ \ 322 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \ 323 1 /* eir_server_impl_id array length */ + \ 324 1 /* nii_domain */ + \ 325 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \ 326 1 /* nii_name */ + \ 327 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \ 328 3 /* nii_date */) 329 #define encode_channel_attrs_maxsz (6 + 1 /* ca_rdma_ird.len (0) */) 330 #define decode_channel_attrs_maxsz (6 + \ 331 1 /* ca_rdma_ird.len */ + \ 332 1 /* ca_rdma_ird */) 333 #define encode_create_session_maxsz (op_encode_hdr_maxsz + \ 334 2 /* csa_clientid */ + \ 335 1 /* csa_sequence */ + \ 336 1 /* csa_flags */ + \ 337 encode_channel_attrs_maxsz + \ 338 encode_channel_attrs_maxsz + \ 339 1 /* csa_cb_program */ + \ 340 1 /* csa_sec_parms.len (1) */ + \ 341 1 /* cb_secflavor (AUTH_SYS) */ + \ 342 1 /* stamp */ + \ 343 1 /* machinename.len */ + \ 344 XDR_QUADLEN(NFS4_MAX_MACHINE_NAME_LEN) + \ 345 1 /* uid */ + \ 346 1 /* gid */ + \ 347 1 /* gids.len (0) */) 348 #define decode_create_session_maxsz (op_decode_hdr_maxsz + \ 349 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \ 350 1 /* csr_sequence */ + \ 351 1 /* csr_flags */ + \ 352 decode_channel_attrs_maxsz + \ 353 decode_channel_attrs_maxsz) 354 #define encode_bind_conn_to_session_maxsz (op_encode_hdr_maxsz + \ 355 /* bctsa_sessid */ \ 356 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \ 357 1 /* bctsa_dir */ + \ 358 1 /* bctsa_use_conn_in_rdma_mode */) 359 #define decode_bind_conn_to_session_maxsz (op_decode_hdr_maxsz + \ 360 /* bctsr_sessid */ \ 361 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \ 362 1 /* bctsr_dir */ + \ 363 1 /* bctsr_use_conn_in_rdma_mode */) 364 #define encode_destroy_session_maxsz (op_encode_hdr_maxsz + 4) 365 #define decode_destroy_session_maxsz (op_decode_hdr_maxsz) 366 #define encode_destroy_clientid_maxsz (op_encode_hdr_maxsz + 2) 367 #define decode_destroy_clientid_maxsz (op_decode_hdr_maxsz) 368 #define encode_sequence_maxsz (op_encode_hdr_maxsz + \ 369 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 4) 370 #define decode_sequence_maxsz (op_decode_hdr_maxsz + \ 371 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 5) 372 #define encode_reclaim_complete_maxsz (op_encode_hdr_maxsz + 4) 373 #define decode_reclaim_complete_maxsz (op_decode_hdr_maxsz + 4) 374 #define encode_getdeviceinfo_maxsz (op_encode_hdr_maxsz + \ 375 XDR_QUADLEN(NFS4_DEVICEID4_SIZE) + \ 376 1 /* layout type */ + \ 377 1 /* maxcount */ + \ 378 1 /* bitmap size */ + \ 379 1 /* notification bitmap length */ + \ 380 1 /* notification bitmap, word 0 */) 381 #define decode_getdeviceinfo_maxsz (op_decode_hdr_maxsz + \ 382 1 /* layout type */ + \ 383 1 /* opaque devaddr4 length */ + \ 384 /* devaddr4 payload is read into page */ \ 385 1 /* notification bitmap length */ + \ 386 1 /* notification bitmap, word 0 */) 387 #define encode_layoutget_maxsz (op_encode_hdr_maxsz + 10 + \ 388 encode_stateid_maxsz) 389 #define decode_layoutget_maxsz (op_decode_hdr_maxsz + 8 + \ 390 decode_stateid_maxsz + \ 391 XDR_QUADLEN(PNFS_LAYOUT_MAXSIZE)) 392 #define encode_layoutcommit_maxsz (op_encode_hdr_maxsz + \ 393 2 /* offset */ + \ 394 2 /* length */ + \ 395 1 /* reclaim */ + \ 396 encode_stateid_maxsz + \ 397 1 /* new offset (true) */ + \ 398 2 /* last byte written */ + \ 399 1 /* nt_timechanged (false) */ + \ 400 1 /* layoutupdate4 layout type */ + \ 401 1 /* layoutupdate4 opaqueue len */) 402 /* the actual content of layoutupdate4 should 403 be allocated by drivers and spliced in 404 using xdr_write_pages */ 405 #define decode_layoutcommit_maxsz (op_decode_hdr_maxsz + 3) 406 #define encode_layoutreturn_maxsz (8 + op_encode_hdr_maxsz + \ 407 encode_stateid_maxsz + \ 408 1 + \ 409 XDR_QUADLEN(NFS4_OPAQUE_LIMIT)) 410 #define decode_layoutreturn_maxsz (op_decode_hdr_maxsz + \ 411 1 + decode_stateid_maxsz) 412 #define encode_secinfo_no_name_maxsz (op_encode_hdr_maxsz + 1) 413 #define decode_secinfo_no_name_maxsz decode_secinfo_maxsz 414 #define encode_test_stateid_maxsz (op_encode_hdr_maxsz + 2 + \ 415 XDR_QUADLEN(NFS4_STATEID_SIZE)) 416 #define decode_test_stateid_maxsz (op_decode_hdr_maxsz + 2 + 1) 417 #define encode_free_stateid_maxsz (op_encode_hdr_maxsz + 1 + \ 418 XDR_QUADLEN(NFS4_STATEID_SIZE)) 419 #define decode_free_stateid_maxsz (op_decode_hdr_maxsz) 420 #else /* CONFIG_NFS_V4_1 */ 421 #define encode_sequence_maxsz 0 422 #define decode_sequence_maxsz 0 423 #define encode_layoutreturn_maxsz 0 424 #define decode_layoutreturn_maxsz 0 425 #endif /* CONFIG_NFS_V4_1 */ 426 427 #define NFS4_enc_compound_sz (1024) /* XXX: large enough? */ 428 #define NFS4_dec_compound_sz (1024) /* XXX: large enough? */ 429 #define NFS4_enc_read_sz (compound_encode_hdr_maxsz + \ 430 encode_sequence_maxsz + \ 431 encode_putfh_maxsz + \ 432 encode_read_maxsz) 433 #define NFS4_dec_read_sz (compound_decode_hdr_maxsz + \ 434 decode_sequence_maxsz + \ 435 decode_putfh_maxsz + \ 436 decode_read_maxsz) 437 #define NFS4_enc_readlink_sz (compound_encode_hdr_maxsz + \ 438 encode_sequence_maxsz + \ 439 encode_putfh_maxsz + \ 440 encode_readlink_maxsz) 441 #define NFS4_dec_readlink_sz (compound_decode_hdr_maxsz + \ 442 decode_sequence_maxsz + \ 443 decode_putfh_maxsz + \ 444 decode_readlink_maxsz) 445 #define NFS4_enc_readdir_sz (compound_encode_hdr_maxsz + \ 446 encode_sequence_maxsz + \ 447 encode_putfh_maxsz + \ 448 encode_readdir_maxsz) 449 #define NFS4_dec_readdir_sz (compound_decode_hdr_maxsz + \ 450 decode_sequence_maxsz + \ 451 decode_putfh_maxsz + \ 452 decode_readdir_maxsz) 453 #define NFS4_enc_write_sz (compound_encode_hdr_maxsz + \ 454 encode_sequence_maxsz + \ 455 encode_putfh_maxsz + \ 456 encode_write_maxsz + \ 457 encode_getattr_maxsz) 458 #define NFS4_dec_write_sz (compound_decode_hdr_maxsz + \ 459 decode_sequence_maxsz + \ 460 decode_putfh_maxsz + \ 461 decode_write_maxsz + \ 462 decode_getattr_maxsz) 463 #define NFS4_enc_commit_sz (compound_encode_hdr_maxsz + \ 464 encode_sequence_maxsz + \ 465 encode_putfh_maxsz + \ 466 encode_commit_maxsz) 467 #define NFS4_dec_commit_sz (compound_decode_hdr_maxsz + \ 468 decode_sequence_maxsz + \ 469 decode_putfh_maxsz + \ 470 decode_commit_maxsz) 471 #define NFS4_enc_open_sz (compound_encode_hdr_maxsz + \ 472 encode_sequence_maxsz + \ 473 encode_putfh_maxsz + \ 474 encode_open_maxsz + \ 475 encode_access_maxsz + \ 476 encode_getfh_maxsz + \ 477 encode_getattr_maxsz) 478 #define NFS4_dec_open_sz (compound_decode_hdr_maxsz + \ 479 decode_sequence_maxsz + \ 480 decode_putfh_maxsz + \ 481 decode_open_maxsz + \ 482 decode_access_maxsz + \ 483 decode_getfh_maxsz + \ 484 decode_getattr_maxsz) 485 #define NFS4_enc_open_confirm_sz \ 486 (compound_encode_hdr_maxsz + \ 487 encode_putfh_maxsz + \ 488 encode_open_confirm_maxsz) 489 #define NFS4_dec_open_confirm_sz \ 490 (compound_decode_hdr_maxsz + \ 491 decode_putfh_maxsz + \ 492 decode_open_confirm_maxsz) 493 #define NFS4_enc_open_noattr_sz (compound_encode_hdr_maxsz + \ 494 encode_sequence_maxsz + \ 495 encode_putfh_maxsz + \ 496 encode_open_maxsz + \ 497 encode_access_maxsz + \ 498 encode_getattr_maxsz) 499 #define NFS4_dec_open_noattr_sz (compound_decode_hdr_maxsz + \ 500 decode_sequence_maxsz + \ 501 decode_putfh_maxsz + \ 502 decode_open_maxsz + \ 503 decode_access_maxsz + \ 504 decode_getattr_maxsz) 505 #define NFS4_enc_open_downgrade_sz \ 506 (compound_encode_hdr_maxsz + \ 507 encode_sequence_maxsz + \ 508 encode_putfh_maxsz + \ 509 encode_layoutreturn_maxsz + \ 510 encode_open_downgrade_maxsz) 511 #define NFS4_dec_open_downgrade_sz \ 512 (compound_decode_hdr_maxsz + \ 513 decode_sequence_maxsz + \ 514 decode_putfh_maxsz + \ 515 decode_layoutreturn_maxsz + \ 516 decode_open_downgrade_maxsz) 517 #define NFS4_enc_close_sz (compound_encode_hdr_maxsz + \ 518 encode_sequence_maxsz + \ 519 encode_putfh_maxsz + \ 520 encode_layoutreturn_maxsz + \ 521 encode_close_maxsz + \ 522 encode_getattr_maxsz) 523 #define NFS4_dec_close_sz (compound_decode_hdr_maxsz + \ 524 decode_sequence_maxsz + \ 525 decode_putfh_maxsz + \ 526 decode_layoutreturn_maxsz + \ 527 decode_close_maxsz + \ 528 decode_getattr_maxsz) 529 #define NFS4_enc_setattr_sz (compound_encode_hdr_maxsz + \ 530 encode_sequence_maxsz + \ 531 encode_putfh_maxsz + \ 532 encode_setattr_maxsz + \ 533 encode_getattr_maxsz) 534 #define NFS4_dec_setattr_sz (compound_decode_hdr_maxsz + \ 535 decode_sequence_maxsz + \ 536 decode_putfh_maxsz + \ 537 decode_setattr_maxsz + \ 538 decode_getattr_maxsz) 539 #define NFS4_enc_fsinfo_sz (compound_encode_hdr_maxsz + \ 540 encode_sequence_maxsz + \ 541 encode_putfh_maxsz + \ 542 encode_fsinfo_maxsz) 543 #define NFS4_dec_fsinfo_sz (compound_decode_hdr_maxsz + \ 544 decode_sequence_maxsz + \ 545 decode_putfh_maxsz + \ 546 decode_fsinfo_maxsz) 547 #define NFS4_enc_renew_sz (compound_encode_hdr_maxsz + \ 548 encode_renew_maxsz) 549 #define NFS4_dec_renew_sz (compound_decode_hdr_maxsz + \ 550 decode_renew_maxsz) 551 #define NFS4_enc_setclientid_sz (compound_encode_hdr_maxsz + \ 552 encode_setclientid_maxsz) 553 #define NFS4_dec_setclientid_sz (compound_decode_hdr_maxsz + \ 554 decode_setclientid_maxsz) 555 #define NFS4_enc_setclientid_confirm_sz \ 556 (compound_encode_hdr_maxsz + \ 557 encode_setclientid_confirm_maxsz) 558 #define NFS4_dec_setclientid_confirm_sz \ 559 (compound_decode_hdr_maxsz + \ 560 decode_setclientid_confirm_maxsz) 561 #define NFS4_enc_lock_sz (compound_encode_hdr_maxsz + \ 562 encode_sequence_maxsz + \ 563 encode_putfh_maxsz + \ 564 encode_lock_maxsz) 565 #define NFS4_dec_lock_sz (compound_decode_hdr_maxsz + \ 566 decode_sequence_maxsz + \ 567 decode_putfh_maxsz + \ 568 decode_lock_maxsz) 569 #define NFS4_enc_lockt_sz (compound_encode_hdr_maxsz + \ 570 encode_sequence_maxsz + \ 571 encode_putfh_maxsz + \ 572 encode_lockt_maxsz) 573 #define NFS4_dec_lockt_sz (compound_decode_hdr_maxsz + \ 574 decode_sequence_maxsz + \ 575 decode_putfh_maxsz + \ 576 decode_lockt_maxsz) 577 #define NFS4_enc_locku_sz (compound_encode_hdr_maxsz + \ 578 encode_sequence_maxsz + \ 579 encode_putfh_maxsz + \ 580 encode_locku_maxsz) 581 #define NFS4_dec_locku_sz (compound_decode_hdr_maxsz + \ 582 decode_sequence_maxsz + \ 583 decode_putfh_maxsz + \ 584 decode_locku_maxsz) 585 #define NFS4_enc_release_lockowner_sz \ 586 (compound_encode_hdr_maxsz + \ 587 encode_lockowner_maxsz) 588 #define NFS4_dec_release_lockowner_sz \ 589 (compound_decode_hdr_maxsz + \ 590 decode_lockowner_maxsz) 591 #define NFS4_enc_access_sz (compound_encode_hdr_maxsz + \ 592 encode_sequence_maxsz + \ 593 encode_putfh_maxsz + \ 594 encode_access_maxsz + \ 595 encode_getattr_maxsz) 596 #define NFS4_dec_access_sz (compound_decode_hdr_maxsz + \ 597 decode_sequence_maxsz + \ 598 decode_putfh_maxsz + \ 599 decode_access_maxsz + \ 600 decode_getattr_maxsz) 601 #define NFS4_enc_getattr_sz (compound_encode_hdr_maxsz + \ 602 encode_sequence_maxsz + \ 603 encode_putfh_maxsz + \ 604 encode_getattr_maxsz + \ 605 encode_renew_maxsz) 606 #define NFS4_dec_getattr_sz (compound_decode_hdr_maxsz + \ 607 decode_sequence_maxsz + \ 608 decode_putfh_maxsz + \ 609 decode_getattr_maxsz + \ 610 decode_renew_maxsz) 611 #define NFS4_enc_lookup_sz (compound_encode_hdr_maxsz + \ 612 encode_sequence_maxsz + \ 613 encode_putfh_maxsz + \ 614 encode_lookup_maxsz + \ 615 encode_getattr_maxsz + \ 616 encode_getfh_maxsz) 617 #define NFS4_dec_lookup_sz (compound_decode_hdr_maxsz + \ 618 decode_sequence_maxsz + \ 619 decode_putfh_maxsz + \ 620 decode_lookup_maxsz + \ 621 decode_getattr_maxsz + \ 622 decode_getfh_maxsz) 623 #define NFS4_enc_lookupp_sz (compound_encode_hdr_maxsz + \ 624 encode_sequence_maxsz + \ 625 encode_putfh_maxsz + \ 626 encode_lookupp_maxsz + \ 627 encode_getattr_maxsz + \ 628 encode_getfh_maxsz) 629 #define NFS4_dec_lookupp_sz (compound_decode_hdr_maxsz + \ 630 decode_sequence_maxsz + \ 631 decode_putfh_maxsz + \ 632 decode_lookupp_maxsz + \ 633 decode_getattr_maxsz + \ 634 decode_getfh_maxsz) 635 #define NFS4_enc_lookup_root_sz (compound_encode_hdr_maxsz + \ 636 encode_sequence_maxsz + \ 637 encode_putrootfh_maxsz + \ 638 encode_getattr_maxsz + \ 639 encode_getfh_maxsz) 640 #define NFS4_dec_lookup_root_sz (compound_decode_hdr_maxsz + \ 641 decode_sequence_maxsz + \ 642 decode_putrootfh_maxsz + \ 643 decode_getattr_maxsz + \ 644 decode_getfh_maxsz) 645 #define NFS4_enc_remove_sz (compound_encode_hdr_maxsz + \ 646 encode_sequence_maxsz + \ 647 encode_putfh_maxsz + \ 648 encode_remove_maxsz) 649 #define NFS4_dec_remove_sz (compound_decode_hdr_maxsz + \ 650 decode_sequence_maxsz + \ 651 decode_putfh_maxsz + \ 652 decode_remove_maxsz) 653 #define NFS4_enc_rename_sz (compound_encode_hdr_maxsz + \ 654 encode_sequence_maxsz + \ 655 encode_putfh_maxsz + \ 656 encode_savefh_maxsz + \ 657 encode_putfh_maxsz + \ 658 encode_rename_maxsz) 659 #define NFS4_dec_rename_sz (compound_decode_hdr_maxsz + \ 660 decode_sequence_maxsz + \ 661 decode_putfh_maxsz + \ 662 decode_savefh_maxsz + \ 663 decode_putfh_maxsz + \ 664 decode_rename_maxsz) 665 #define NFS4_enc_link_sz (compound_encode_hdr_maxsz + \ 666 encode_sequence_maxsz + \ 667 encode_putfh_maxsz + \ 668 encode_savefh_maxsz + \ 669 encode_putfh_maxsz + \ 670 encode_link_maxsz + \ 671 encode_restorefh_maxsz + \ 672 encode_getattr_maxsz) 673 #define NFS4_dec_link_sz (compound_decode_hdr_maxsz + \ 674 decode_sequence_maxsz + \ 675 decode_putfh_maxsz + \ 676 decode_savefh_maxsz + \ 677 decode_putfh_maxsz + \ 678 decode_link_maxsz + \ 679 decode_restorefh_maxsz + \ 680 decode_getattr_maxsz) 681 #define NFS4_enc_symlink_sz (compound_encode_hdr_maxsz + \ 682 encode_sequence_maxsz + \ 683 encode_putfh_maxsz + \ 684 encode_symlink_maxsz + \ 685 encode_getattr_maxsz + \ 686 encode_getfh_maxsz) 687 #define NFS4_dec_symlink_sz (compound_decode_hdr_maxsz + \ 688 decode_sequence_maxsz + \ 689 decode_putfh_maxsz + \ 690 decode_symlink_maxsz + \ 691 decode_getattr_maxsz + \ 692 decode_getfh_maxsz) 693 #define NFS4_enc_create_sz (compound_encode_hdr_maxsz + \ 694 encode_sequence_maxsz + \ 695 encode_putfh_maxsz + \ 696 encode_create_maxsz + \ 697 encode_getfh_maxsz + \ 698 encode_getattr_maxsz) 699 #define NFS4_dec_create_sz (compound_decode_hdr_maxsz + \ 700 decode_sequence_maxsz + \ 701 decode_putfh_maxsz + \ 702 decode_create_maxsz + \ 703 decode_getfh_maxsz + \ 704 decode_getattr_maxsz) 705 #define NFS4_enc_pathconf_sz (compound_encode_hdr_maxsz + \ 706 encode_sequence_maxsz + \ 707 encode_putfh_maxsz + \ 708 encode_getattr_maxsz) 709 #define NFS4_dec_pathconf_sz (compound_decode_hdr_maxsz + \ 710 decode_sequence_maxsz + \ 711 decode_putfh_maxsz + \ 712 decode_getattr_maxsz) 713 #define NFS4_enc_statfs_sz (compound_encode_hdr_maxsz + \ 714 encode_sequence_maxsz + \ 715 encode_putfh_maxsz + \ 716 encode_statfs_maxsz) 717 #define NFS4_dec_statfs_sz (compound_decode_hdr_maxsz + \ 718 decode_sequence_maxsz + \ 719 decode_putfh_maxsz + \ 720 decode_statfs_maxsz) 721 #define NFS4_enc_server_caps_sz (compound_encode_hdr_maxsz + \ 722 encode_sequence_maxsz + \ 723 encode_putfh_maxsz + \ 724 encode_getattr_maxsz) 725 #define NFS4_dec_server_caps_sz (compound_decode_hdr_maxsz + \ 726 decode_sequence_maxsz + \ 727 decode_putfh_maxsz + \ 728 decode_getattr_maxsz) 729 #define NFS4_enc_delegreturn_sz (compound_encode_hdr_maxsz + \ 730 encode_sequence_maxsz + \ 731 encode_putfh_maxsz + \ 732 encode_layoutreturn_maxsz + \ 733 encode_delegreturn_maxsz + \ 734 encode_getattr_maxsz) 735 #define NFS4_dec_delegreturn_sz (compound_decode_hdr_maxsz + \ 736 decode_sequence_maxsz + \ 737 decode_putfh_maxsz + \ 738 decode_layoutreturn_maxsz + \ 739 decode_delegreturn_maxsz + \ 740 decode_getattr_maxsz) 741 #define NFS4_enc_getacl_sz (compound_encode_hdr_maxsz + \ 742 encode_sequence_maxsz + \ 743 encode_putfh_maxsz + \ 744 encode_getacl_maxsz) 745 #define NFS4_dec_getacl_sz (compound_decode_hdr_maxsz + \ 746 decode_sequence_maxsz + \ 747 decode_putfh_maxsz + \ 748 decode_getacl_maxsz) 749 #define NFS4_enc_setacl_sz (compound_encode_hdr_maxsz + \ 750 encode_sequence_maxsz + \ 751 encode_putfh_maxsz + \ 752 encode_setacl_maxsz) 753 #define NFS4_dec_setacl_sz (compound_decode_hdr_maxsz + \ 754 decode_sequence_maxsz + \ 755 decode_putfh_maxsz + \ 756 decode_setacl_maxsz) 757 #define NFS4_enc_fs_locations_sz \ 758 (compound_encode_hdr_maxsz + \ 759 encode_sequence_maxsz + \ 760 encode_putfh_maxsz + \ 761 encode_lookup_maxsz + \ 762 encode_fs_locations_maxsz + \ 763 encode_renew_maxsz) 764 #define NFS4_dec_fs_locations_sz \ 765 (compound_decode_hdr_maxsz + \ 766 decode_sequence_maxsz + \ 767 decode_putfh_maxsz + \ 768 decode_lookup_maxsz + \ 769 decode_fs_locations_maxsz + \ 770 decode_renew_maxsz) 771 #define NFS4_enc_secinfo_sz (compound_encode_hdr_maxsz + \ 772 encode_sequence_maxsz + \ 773 encode_putfh_maxsz + \ 774 encode_secinfo_maxsz) 775 #define NFS4_dec_secinfo_sz (compound_decode_hdr_maxsz + \ 776 decode_sequence_maxsz + \ 777 decode_putfh_maxsz + \ 778 decode_secinfo_maxsz) 779 #define NFS4_enc_fsid_present_sz \ 780 (compound_encode_hdr_maxsz + \ 781 encode_sequence_maxsz + \ 782 encode_putfh_maxsz + \ 783 encode_getfh_maxsz + \ 784 encode_renew_maxsz) 785 #define NFS4_dec_fsid_present_sz \ 786 (compound_decode_hdr_maxsz + \ 787 decode_sequence_maxsz + \ 788 decode_putfh_maxsz + \ 789 decode_getfh_maxsz + \ 790 decode_renew_maxsz) 791 #if defined(CONFIG_NFS_V4_1) 792 #define NFS4_enc_bind_conn_to_session_sz \ 793 (compound_encode_hdr_maxsz + \ 794 encode_bind_conn_to_session_maxsz) 795 #define NFS4_dec_bind_conn_to_session_sz \ 796 (compound_decode_hdr_maxsz + \ 797 decode_bind_conn_to_session_maxsz) 798 #define NFS4_enc_exchange_id_sz \ 799 (compound_encode_hdr_maxsz + \ 800 encode_exchange_id_maxsz) 801 #define NFS4_dec_exchange_id_sz \ 802 (compound_decode_hdr_maxsz + \ 803 decode_exchange_id_maxsz) 804 #define NFS4_enc_create_session_sz \ 805 (compound_encode_hdr_maxsz + \ 806 encode_create_session_maxsz) 807 #define NFS4_dec_create_session_sz \ 808 (compound_decode_hdr_maxsz + \ 809 decode_create_session_maxsz) 810 #define NFS4_enc_destroy_session_sz (compound_encode_hdr_maxsz + \ 811 encode_destroy_session_maxsz) 812 #define NFS4_dec_destroy_session_sz (compound_decode_hdr_maxsz + \ 813 decode_destroy_session_maxsz) 814 #define NFS4_enc_destroy_clientid_sz (compound_encode_hdr_maxsz + \ 815 encode_destroy_clientid_maxsz) 816 #define NFS4_dec_destroy_clientid_sz (compound_decode_hdr_maxsz + \ 817 decode_destroy_clientid_maxsz) 818 #define NFS4_enc_sequence_sz \ 819 (compound_decode_hdr_maxsz + \ 820 encode_sequence_maxsz) 821 #define NFS4_dec_sequence_sz \ 822 (compound_decode_hdr_maxsz + \ 823 decode_sequence_maxsz) 824 #define NFS4_enc_get_lease_time_sz (compound_encode_hdr_maxsz + \ 825 encode_sequence_maxsz + \ 826 encode_putrootfh_maxsz + \ 827 encode_fsinfo_maxsz) 828 #define NFS4_dec_get_lease_time_sz (compound_decode_hdr_maxsz + \ 829 decode_sequence_maxsz + \ 830 decode_putrootfh_maxsz + \ 831 decode_fsinfo_maxsz) 832 #define NFS4_enc_reclaim_complete_sz (compound_encode_hdr_maxsz + \ 833 encode_sequence_maxsz + \ 834 encode_reclaim_complete_maxsz) 835 #define NFS4_dec_reclaim_complete_sz (compound_decode_hdr_maxsz + \ 836 decode_sequence_maxsz + \ 837 decode_reclaim_complete_maxsz) 838 #define NFS4_enc_getdeviceinfo_sz (compound_encode_hdr_maxsz + \ 839 encode_sequence_maxsz +\ 840 encode_getdeviceinfo_maxsz) 841 #define NFS4_dec_getdeviceinfo_sz (compound_decode_hdr_maxsz + \ 842 decode_sequence_maxsz + \ 843 decode_getdeviceinfo_maxsz) 844 #define NFS4_enc_layoutget_sz (compound_encode_hdr_maxsz + \ 845 encode_sequence_maxsz + \ 846 encode_putfh_maxsz + \ 847 encode_layoutget_maxsz) 848 #define NFS4_dec_layoutget_sz (compound_decode_hdr_maxsz + \ 849 decode_sequence_maxsz + \ 850 decode_putfh_maxsz + \ 851 decode_layoutget_maxsz) 852 #define NFS4_enc_layoutcommit_sz (compound_encode_hdr_maxsz + \ 853 encode_sequence_maxsz +\ 854 encode_putfh_maxsz + \ 855 encode_layoutcommit_maxsz + \ 856 encode_getattr_maxsz) 857 #define NFS4_dec_layoutcommit_sz (compound_decode_hdr_maxsz + \ 858 decode_sequence_maxsz + \ 859 decode_putfh_maxsz + \ 860 decode_layoutcommit_maxsz + \ 861 decode_getattr_maxsz) 862 #define NFS4_enc_layoutreturn_sz (compound_encode_hdr_maxsz + \ 863 encode_sequence_maxsz + \ 864 encode_putfh_maxsz + \ 865 encode_layoutreturn_maxsz) 866 #define NFS4_dec_layoutreturn_sz (compound_decode_hdr_maxsz + \ 867 decode_sequence_maxsz + \ 868 decode_putfh_maxsz + \ 869 decode_layoutreturn_maxsz) 870 #define NFS4_enc_secinfo_no_name_sz (compound_encode_hdr_maxsz + \ 871 encode_sequence_maxsz + \ 872 encode_putrootfh_maxsz +\ 873 encode_secinfo_no_name_maxsz) 874 #define NFS4_dec_secinfo_no_name_sz (compound_decode_hdr_maxsz + \ 875 decode_sequence_maxsz + \ 876 decode_putrootfh_maxsz + \ 877 decode_secinfo_no_name_maxsz) 878 #define NFS4_enc_test_stateid_sz (compound_encode_hdr_maxsz + \ 879 encode_sequence_maxsz + \ 880 encode_test_stateid_maxsz) 881 #define NFS4_dec_test_stateid_sz (compound_decode_hdr_maxsz + \ 882 decode_sequence_maxsz + \ 883 decode_test_stateid_maxsz) 884 #define NFS4_enc_free_stateid_sz (compound_encode_hdr_maxsz + \ 885 encode_sequence_maxsz + \ 886 encode_free_stateid_maxsz) 887 #define NFS4_dec_free_stateid_sz (compound_decode_hdr_maxsz + \ 888 decode_sequence_maxsz + \ 889 decode_free_stateid_maxsz) 890 891 const u32 nfs41_maxwrite_overhead = ((RPC_MAX_HEADER_WITH_AUTH + 892 compound_encode_hdr_maxsz + 893 encode_sequence_maxsz + 894 encode_putfh_maxsz + 895 encode_getattr_maxsz) * 896 XDR_UNIT); 897 898 const u32 nfs41_maxread_overhead = ((RPC_MAX_HEADER_WITH_AUTH + 899 compound_decode_hdr_maxsz + 900 decode_sequence_maxsz + 901 decode_putfh_maxsz) * 902 XDR_UNIT); 903 904 const u32 nfs41_maxgetdevinfo_overhead = ((RPC_MAX_REPHEADER_WITH_AUTH + 905 compound_decode_hdr_maxsz + 906 decode_sequence_maxsz) * 907 XDR_UNIT); 908 EXPORT_SYMBOL_GPL(nfs41_maxgetdevinfo_overhead); 909 #endif /* CONFIG_NFS_V4_1 */ 910 911 static const umode_t nfs_type2fmt[] = { 912 [NF4BAD] = 0, 913 [NF4REG] = S_IFREG, 914 [NF4DIR] = S_IFDIR, 915 [NF4BLK] = S_IFBLK, 916 [NF4CHR] = S_IFCHR, 917 [NF4LNK] = S_IFLNK, 918 [NF4SOCK] = S_IFSOCK, 919 [NF4FIFO] = S_IFIFO, 920 [NF4ATTRDIR] = 0, 921 [NF4NAMEDATTR] = 0, 922 }; 923 924 struct compound_hdr { 925 int32_t status; 926 uint32_t nops; 927 __be32 * nops_p; 928 uint32_t taglen; 929 char * tag; 930 uint32_t replen; /* expected reply words */ 931 u32 minorversion; 932 }; 933 934 static __be32 *reserve_space(struct xdr_stream *xdr, size_t nbytes) 935 { 936 __be32 *p = xdr_reserve_space(xdr, nbytes); 937 BUG_ON(!p); 938 return p; 939 } 940 941 static void encode_opaque_fixed(struct xdr_stream *xdr, const void *buf, size_t len) 942 { 943 WARN_ON_ONCE(xdr_stream_encode_opaque_fixed(xdr, buf, len) < 0); 944 } 945 946 static void encode_string(struct xdr_stream *xdr, unsigned int len, const char *str) 947 { 948 WARN_ON_ONCE(xdr_stream_encode_opaque(xdr, str, len) < 0); 949 } 950 951 static void encode_uint32(struct xdr_stream *xdr, u32 n) 952 { 953 WARN_ON_ONCE(xdr_stream_encode_u32(xdr, n) < 0); 954 } 955 956 static void encode_uint64(struct xdr_stream *xdr, u64 n) 957 { 958 WARN_ON_ONCE(xdr_stream_encode_u64(xdr, n) < 0); 959 } 960 961 static void encode_nfs4_seqid(struct xdr_stream *xdr, 962 const struct nfs_seqid *seqid) 963 { 964 if (seqid != NULL) 965 encode_uint32(xdr, seqid->sequence->counter); 966 else 967 encode_uint32(xdr, 0); 968 } 969 970 static void encode_compound_hdr(struct xdr_stream *xdr, 971 struct rpc_rqst *req, 972 struct compound_hdr *hdr) 973 { 974 __be32 *p; 975 struct rpc_auth *auth = req->rq_cred->cr_auth; 976 977 /* initialize running count of expected bytes in reply. 978 * NOTE: the replied tag SHOULD be the same is the one sent, 979 * but this is not required as a MUST for the server to do so. */ 980 hdr->replen = RPC_REPHDRSIZE + auth->au_rslack + 3 + hdr->taglen; 981 982 WARN_ON_ONCE(hdr->taglen > NFS4_MAXTAGLEN); 983 encode_string(xdr, hdr->taglen, hdr->tag); 984 p = reserve_space(xdr, 8); 985 *p++ = cpu_to_be32(hdr->minorversion); 986 hdr->nops_p = p; 987 *p = cpu_to_be32(hdr->nops); 988 } 989 990 static void encode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 op, 991 uint32_t replen, 992 struct compound_hdr *hdr) 993 { 994 encode_uint32(xdr, op); 995 hdr->nops++; 996 hdr->replen += replen; 997 } 998 999 static void encode_nops(struct compound_hdr *hdr) 1000 { 1001 WARN_ON_ONCE(hdr->nops > NFS4_MAX_OPS); 1002 *hdr->nops_p = htonl(hdr->nops); 1003 } 1004 1005 static void encode_nfs4_stateid(struct xdr_stream *xdr, const nfs4_stateid *stateid) 1006 { 1007 encode_opaque_fixed(xdr, stateid, NFS4_STATEID_SIZE); 1008 } 1009 1010 static void encode_nfs4_verifier(struct xdr_stream *xdr, const nfs4_verifier *verf) 1011 { 1012 encode_opaque_fixed(xdr, verf->data, NFS4_VERIFIER_SIZE); 1013 } 1014 1015 static void encode_attrs(struct xdr_stream *xdr, const struct iattr *iap, 1016 const struct nfs4_label *label, 1017 const umode_t *umask, 1018 const struct nfs_server *server, 1019 const uint32_t attrmask[]) 1020 { 1021 char owner_name[IDMAP_NAMESZ]; 1022 char owner_group[IDMAP_NAMESZ]; 1023 int owner_namelen = 0; 1024 int owner_grouplen = 0; 1025 __be32 *p; 1026 unsigned i; 1027 uint32_t len = 0; 1028 uint32_t bmval_len; 1029 uint32_t bmval[3] = { 0 }; 1030 1031 /* 1032 * We reserve enough space to write the entire attribute buffer at once. 1033 */ 1034 if ((iap->ia_valid & ATTR_SIZE) && (attrmask[0] & FATTR4_WORD0_SIZE)) { 1035 bmval[0] |= FATTR4_WORD0_SIZE; 1036 len += 8; 1037 } 1038 if (iap->ia_valid & ATTR_MODE) { 1039 if (umask && (attrmask[2] & FATTR4_WORD2_MODE_UMASK)) { 1040 bmval[2] |= FATTR4_WORD2_MODE_UMASK; 1041 len += 8; 1042 } else if (attrmask[1] & FATTR4_WORD1_MODE) { 1043 bmval[1] |= FATTR4_WORD1_MODE; 1044 len += 4; 1045 } 1046 } 1047 if ((iap->ia_valid & ATTR_UID) && (attrmask[1] & FATTR4_WORD1_OWNER)) { 1048 owner_namelen = nfs_map_uid_to_name(server, iap->ia_uid, owner_name, IDMAP_NAMESZ); 1049 if (owner_namelen < 0) { 1050 dprintk("nfs: couldn't resolve uid %d to string\n", 1051 from_kuid(&init_user_ns, iap->ia_uid)); 1052 /* XXX */ 1053 strcpy(owner_name, "nobody"); 1054 owner_namelen = sizeof("nobody") - 1; 1055 /* goto out; */ 1056 } 1057 bmval[1] |= FATTR4_WORD1_OWNER; 1058 len += 4 + (XDR_QUADLEN(owner_namelen) << 2); 1059 } 1060 if ((iap->ia_valid & ATTR_GID) && 1061 (attrmask[1] & FATTR4_WORD1_OWNER_GROUP)) { 1062 owner_grouplen = nfs_map_gid_to_group(server, iap->ia_gid, owner_group, IDMAP_NAMESZ); 1063 if (owner_grouplen < 0) { 1064 dprintk("nfs: couldn't resolve gid %d to string\n", 1065 from_kgid(&init_user_ns, iap->ia_gid)); 1066 strcpy(owner_group, "nobody"); 1067 owner_grouplen = sizeof("nobody") - 1; 1068 /* goto out; */ 1069 } 1070 bmval[1] |= FATTR4_WORD1_OWNER_GROUP; 1071 len += 4 + (XDR_QUADLEN(owner_grouplen) << 2); 1072 } 1073 if (attrmask[1] & FATTR4_WORD1_TIME_ACCESS_SET) { 1074 if (iap->ia_valid & ATTR_ATIME_SET) { 1075 bmval[1] |= FATTR4_WORD1_TIME_ACCESS_SET; 1076 len += 16; 1077 } else if (iap->ia_valid & ATTR_ATIME) { 1078 bmval[1] |= FATTR4_WORD1_TIME_ACCESS_SET; 1079 len += 4; 1080 } 1081 } 1082 if (attrmask[1] & FATTR4_WORD1_TIME_MODIFY_SET) { 1083 if (iap->ia_valid & ATTR_MTIME_SET) { 1084 bmval[1] |= FATTR4_WORD1_TIME_MODIFY_SET; 1085 len += 16; 1086 } else if (iap->ia_valid & ATTR_MTIME) { 1087 bmval[1] |= FATTR4_WORD1_TIME_MODIFY_SET; 1088 len += 4; 1089 } 1090 } 1091 1092 if (label && (attrmask[2] & FATTR4_WORD2_SECURITY_LABEL)) { 1093 len += 4 + 4 + 4 + (XDR_QUADLEN(label->len) << 2); 1094 bmval[2] |= FATTR4_WORD2_SECURITY_LABEL; 1095 } 1096 1097 if (bmval[2] != 0) 1098 bmval_len = 3; 1099 else if (bmval[1] != 0) 1100 bmval_len = 2; 1101 else 1102 bmval_len = 1; 1103 1104 p = reserve_space(xdr, 4 + (bmval_len << 2) + 4 + len); 1105 1106 *p++ = cpu_to_be32(bmval_len); 1107 for (i = 0; i < bmval_len; i++) 1108 *p++ = cpu_to_be32(bmval[i]); 1109 *p++ = cpu_to_be32(len); 1110 1111 if (bmval[0] & FATTR4_WORD0_SIZE) 1112 p = xdr_encode_hyper(p, iap->ia_size); 1113 if (bmval[1] & FATTR4_WORD1_MODE) 1114 *p++ = cpu_to_be32(iap->ia_mode & S_IALLUGO); 1115 if (bmval[1] & FATTR4_WORD1_OWNER) 1116 p = xdr_encode_opaque(p, owner_name, owner_namelen); 1117 if (bmval[1] & FATTR4_WORD1_OWNER_GROUP) 1118 p = xdr_encode_opaque(p, owner_group, owner_grouplen); 1119 if (bmval[1] & FATTR4_WORD1_TIME_ACCESS_SET) { 1120 if (iap->ia_valid & ATTR_ATIME_SET) { 1121 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME); 1122 p = xdr_encode_hyper(p, (s64)iap->ia_atime.tv_sec); 1123 *p++ = cpu_to_be32(iap->ia_atime.tv_nsec); 1124 } else 1125 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME); 1126 } 1127 if (bmval[1] & FATTR4_WORD1_TIME_MODIFY_SET) { 1128 if (iap->ia_valid & ATTR_MTIME_SET) { 1129 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME); 1130 p = xdr_encode_hyper(p, (s64)iap->ia_mtime.tv_sec); 1131 *p++ = cpu_to_be32(iap->ia_mtime.tv_nsec); 1132 } else 1133 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME); 1134 } 1135 if (bmval[2] & FATTR4_WORD2_SECURITY_LABEL) { 1136 *p++ = cpu_to_be32(label->lfs); 1137 *p++ = cpu_to_be32(label->pi); 1138 *p++ = cpu_to_be32(label->len); 1139 p = xdr_encode_opaque_fixed(p, label->label, label->len); 1140 } 1141 if (bmval[2] & FATTR4_WORD2_MODE_UMASK) { 1142 *p++ = cpu_to_be32(iap->ia_mode & S_IALLUGO); 1143 *p++ = cpu_to_be32(*umask); 1144 } 1145 1146 /* out: */ 1147 } 1148 1149 static void encode_access(struct xdr_stream *xdr, u32 access, struct compound_hdr *hdr) 1150 { 1151 encode_op_hdr(xdr, OP_ACCESS, decode_access_maxsz, hdr); 1152 encode_uint32(xdr, access); 1153 } 1154 1155 static void encode_close(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr) 1156 { 1157 encode_op_hdr(xdr, OP_CLOSE, decode_close_maxsz, hdr); 1158 encode_nfs4_seqid(xdr, arg->seqid); 1159 encode_nfs4_stateid(xdr, &arg->stateid); 1160 } 1161 1162 static void encode_commit(struct xdr_stream *xdr, const struct nfs_commitargs *args, struct compound_hdr *hdr) 1163 { 1164 __be32 *p; 1165 1166 encode_op_hdr(xdr, OP_COMMIT, decode_commit_maxsz, hdr); 1167 p = reserve_space(xdr, 12); 1168 p = xdr_encode_hyper(p, args->offset); 1169 *p = cpu_to_be32(args->count); 1170 } 1171 1172 static void encode_create(struct xdr_stream *xdr, const struct nfs4_create_arg *create, struct compound_hdr *hdr) 1173 { 1174 __be32 *p; 1175 1176 encode_op_hdr(xdr, OP_CREATE, decode_create_maxsz, hdr); 1177 encode_uint32(xdr, create->ftype); 1178 1179 switch (create->ftype) { 1180 case NF4LNK: 1181 p = reserve_space(xdr, 4); 1182 *p = cpu_to_be32(create->u.symlink.len); 1183 xdr_write_pages(xdr, create->u.symlink.pages, 0, 1184 create->u.symlink.len); 1185 xdr->buf->flags |= XDRBUF_WRITE; 1186 break; 1187 1188 case NF4BLK: case NF4CHR: 1189 p = reserve_space(xdr, 8); 1190 *p++ = cpu_to_be32(create->u.device.specdata1); 1191 *p = cpu_to_be32(create->u.device.specdata2); 1192 break; 1193 1194 default: 1195 break; 1196 } 1197 1198 encode_string(xdr, create->name->len, create->name->name); 1199 encode_attrs(xdr, create->attrs, create->label, &create->umask, 1200 create->server, create->server->attr_bitmask); 1201 } 1202 1203 static void encode_getattr_one(struct xdr_stream *xdr, uint32_t bitmap, struct compound_hdr *hdr) 1204 { 1205 __be32 *p; 1206 1207 encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr); 1208 p = reserve_space(xdr, 8); 1209 *p++ = cpu_to_be32(1); 1210 *p = cpu_to_be32(bitmap); 1211 } 1212 1213 static void encode_getattr_two(struct xdr_stream *xdr, uint32_t bm0, uint32_t bm1, struct compound_hdr *hdr) 1214 { 1215 __be32 *p; 1216 1217 encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr); 1218 p = reserve_space(xdr, 12); 1219 *p++ = cpu_to_be32(2); 1220 *p++ = cpu_to_be32(bm0); 1221 *p = cpu_to_be32(bm1); 1222 } 1223 1224 static void 1225 encode_getattr_three(struct xdr_stream *xdr, 1226 uint32_t bm0, uint32_t bm1, uint32_t bm2, 1227 struct compound_hdr *hdr) 1228 { 1229 __be32 *p; 1230 1231 encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr); 1232 if (bm2) { 1233 p = reserve_space(xdr, 16); 1234 *p++ = cpu_to_be32(3); 1235 *p++ = cpu_to_be32(bm0); 1236 *p++ = cpu_to_be32(bm1); 1237 *p = cpu_to_be32(bm2); 1238 } else if (bm1) { 1239 p = reserve_space(xdr, 12); 1240 *p++ = cpu_to_be32(2); 1241 *p++ = cpu_to_be32(bm0); 1242 *p = cpu_to_be32(bm1); 1243 } else { 1244 p = reserve_space(xdr, 8); 1245 *p++ = cpu_to_be32(1); 1246 *p = cpu_to_be32(bm0); 1247 } 1248 } 1249 1250 static void encode_getfattr(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr) 1251 { 1252 encode_getattr_three(xdr, bitmask[0] & nfs4_fattr_bitmap[0], 1253 bitmask[1] & nfs4_fattr_bitmap[1], 1254 bitmask[2] & nfs4_fattr_bitmap[2], 1255 hdr); 1256 } 1257 1258 static void encode_getfattr_open(struct xdr_stream *xdr, const u32 *bitmask, 1259 const u32 *open_bitmap, 1260 struct compound_hdr *hdr) 1261 { 1262 encode_getattr_three(xdr, 1263 bitmask[0] & open_bitmap[0], 1264 bitmask[1] & open_bitmap[1], 1265 bitmask[2] & open_bitmap[2], 1266 hdr); 1267 } 1268 1269 static void encode_fsinfo(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr) 1270 { 1271 encode_getattr_three(xdr, 1272 bitmask[0] & nfs4_fsinfo_bitmap[0], 1273 bitmask[1] & nfs4_fsinfo_bitmap[1], 1274 bitmask[2] & nfs4_fsinfo_bitmap[2], 1275 hdr); 1276 } 1277 1278 static void encode_fs_locations(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr) 1279 { 1280 encode_getattr_two(xdr, bitmask[0] & nfs4_fs_locations_bitmap[0], 1281 bitmask[1] & nfs4_fs_locations_bitmap[1], hdr); 1282 } 1283 1284 static void encode_getfh(struct xdr_stream *xdr, struct compound_hdr *hdr) 1285 { 1286 encode_op_hdr(xdr, OP_GETFH, decode_getfh_maxsz, hdr); 1287 } 1288 1289 static void encode_link(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr) 1290 { 1291 encode_op_hdr(xdr, OP_LINK, decode_link_maxsz, hdr); 1292 encode_string(xdr, name->len, name->name); 1293 } 1294 1295 static inline int nfs4_lock_type(struct file_lock *fl, int block) 1296 { 1297 if (fl->fl_type == F_RDLCK) 1298 return block ? NFS4_READW_LT : NFS4_READ_LT; 1299 return block ? NFS4_WRITEW_LT : NFS4_WRITE_LT; 1300 } 1301 1302 static inline uint64_t nfs4_lock_length(struct file_lock *fl) 1303 { 1304 if (fl->fl_end == OFFSET_MAX) 1305 return ~(uint64_t)0; 1306 return fl->fl_end - fl->fl_start + 1; 1307 } 1308 1309 static void encode_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner) 1310 { 1311 __be32 *p; 1312 1313 p = reserve_space(xdr, 32); 1314 p = xdr_encode_hyper(p, lowner->clientid); 1315 *p++ = cpu_to_be32(20); 1316 p = xdr_encode_opaque_fixed(p, "lock id:", 8); 1317 *p++ = cpu_to_be32(lowner->s_dev); 1318 xdr_encode_hyper(p, lowner->id); 1319 } 1320 1321 /* 1322 * opcode,type,reclaim,offset,length,new_lock_owner = 32 1323 * open_seqid,open_stateid,lock_seqid,lock_owner.clientid, lock_owner.id = 40 1324 */ 1325 static void encode_lock(struct xdr_stream *xdr, const struct nfs_lock_args *args, struct compound_hdr *hdr) 1326 { 1327 __be32 *p; 1328 1329 encode_op_hdr(xdr, OP_LOCK, decode_lock_maxsz, hdr); 1330 p = reserve_space(xdr, 28); 1331 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, args->block)); 1332 *p++ = cpu_to_be32(args->reclaim); 1333 p = xdr_encode_hyper(p, args->fl->fl_start); 1334 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl)); 1335 *p = cpu_to_be32(args->new_lock_owner); 1336 if (args->new_lock_owner){ 1337 encode_nfs4_seqid(xdr, args->open_seqid); 1338 encode_nfs4_stateid(xdr, &args->open_stateid); 1339 encode_nfs4_seqid(xdr, args->lock_seqid); 1340 encode_lockowner(xdr, &args->lock_owner); 1341 } 1342 else { 1343 encode_nfs4_stateid(xdr, &args->lock_stateid); 1344 encode_nfs4_seqid(xdr, args->lock_seqid); 1345 } 1346 } 1347 1348 static void encode_lockt(struct xdr_stream *xdr, const struct nfs_lockt_args *args, struct compound_hdr *hdr) 1349 { 1350 __be32 *p; 1351 1352 encode_op_hdr(xdr, OP_LOCKT, decode_lockt_maxsz, hdr); 1353 p = reserve_space(xdr, 20); 1354 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, 0)); 1355 p = xdr_encode_hyper(p, args->fl->fl_start); 1356 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl)); 1357 encode_lockowner(xdr, &args->lock_owner); 1358 } 1359 1360 static void encode_locku(struct xdr_stream *xdr, const struct nfs_locku_args *args, struct compound_hdr *hdr) 1361 { 1362 __be32 *p; 1363 1364 encode_op_hdr(xdr, OP_LOCKU, decode_locku_maxsz, hdr); 1365 encode_uint32(xdr, nfs4_lock_type(args->fl, 0)); 1366 encode_nfs4_seqid(xdr, args->seqid); 1367 encode_nfs4_stateid(xdr, &args->stateid); 1368 p = reserve_space(xdr, 16); 1369 p = xdr_encode_hyper(p, args->fl->fl_start); 1370 xdr_encode_hyper(p, nfs4_lock_length(args->fl)); 1371 } 1372 1373 static void encode_release_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner, struct compound_hdr *hdr) 1374 { 1375 encode_op_hdr(xdr, OP_RELEASE_LOCKOWNER, decode_release_lockowner_maxsz, hdr); 1376 encode_lockowner(xdr, lowner); 1377 } 1378 1379 static void encode_lookup(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr) 1380 { 1381 encode_op_hdr(xdr, OP_LOOKUP, decode_lookup_maxsz, hdr); 1382 encode_string(xdr, name->len, name->name); 1383 } 1384 1385 static void encode_lookupp(struct xdr_stream *xdr, struct compound_hdr *hdr) 1386 { 1387 encode_op_hdr(xdr, OP_LOOKUPP, decode_lookupp_maxsz, hdr); 1388 } 1389 1390 static void encode_share_access(struct xdr_stream *xdr, u32 share_access) 1391 { 1392 __be32 *p; 1393 1394 p = reserve_space(xdr, 8); 1395 *p++ = cpu_to_be32(share_access); 1396 *p = cpu_to_be32(0); /* for linux, share_deny = 0 always */ 1397 } 1398 1399 static inline void encode_openhdr(struct xdr_stream *xdr, const struct nfs_openargs *arg) 1400 { 1401 __be32 *p; 1402 /* 1403 * opcode 4, seqid 4, share_access 4, share_deny 4, clientid 8, ownerlen 4, 1404 * owner 4 = 32 1405 */ 1406 encode_nfs4_seqid(xdr, arg->seqid); 1407 encode_share_access(xdr, arg->share_access); 1408 p = reserve_space(xdr, 36); 1409 p = xdr_encode_hyper(p, arg->clientid); 1410 *p++ = cpu_to_be32(24); 1411 p = xdr_encode_opaque_fixed(p, "open id:", 8); 1412 *p++ = cpu_to_be32(arg->server->s_dev); 1413 *p++ = cpu_to_be32(arg->id.uniquifier); 1414 xdr_encode_hyper(p, arg->id.create_time); 1415 } 1416 1417 static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_openargs *arg) 1418 { 1419 __be32 *p; 1420 1421 p = reserve_space(xdr, 4); 1422 switch(arg->createmode) { 1423 case NFS4_CREATE_UNCHECKED: 1424 *p = cpu_to_be32(NFS4_CREATE_UNCHECKED); 1425 encode_attrs(xdr, arg->u.attrs, arg->label, &arg->umask, 1426 arg->server, arg->server->attr_bitmask); 1427 break; 1428 case NFS4_CREATE_GUARDED: 1429 *p = cpu_to_be32(NFS4_CREATE_GUARDED); 1430 encode_attrs(xdr, arg->u.attrs, arg->label, &arg->umask, 1431 arg->server, arg->server->attr_bitmask); 1432 break; 1433 case NFS4_CREATE_EXCLUSIVE: 1434 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE); 1435 encode_nfs4_verifier(xdr, &arg->u.verifier); 1436 break; 1437 case NFS4_CREATE_EXCLUSIVE4_1: 1438 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE4_1); 1439 encode_nfs4_verifier(xdr, &arg->u.verifier); 1440 encode_attrs(xdr, arg->u.attrs, arg->label, &arg->umask, 1441 arg->server, arg->server->exclcreat_bitmask); 1442 } 1443 } 1444 1445 static void encode_opentype(struct xdr_stream *xdr, const struct nfs_openargs *arg) 1446 { 1447 __be32 *p; 1448 1449 p = reserve_space(xdr, 4); 1450 switch (arg->open_flags & O_CREAT) { 1451 case 0: 1452 *p = cpu_to_be32(NFS4_OPEN_NOCREATE); 1453 break; 1454 default: 1455 *p = cpu_to_be32(NFS4_OPEN_CREATE); 1456 encode_createmode(xdr, arg); 1457 } 1458 } 1459 1460 static inline void encode_delegation_type(struct xdr_stream *xdr, fmode_t delegation_type) 1461 { 1462 __be32 *p; 1463 1464 p = reserve_space(xdr, 4); 1465 switch (delegation_type) { 1466 case 0: 1467 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_NONE); 1468 break; 1469 case FMODE_READ: 1470 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_READ); 1471 break; 1472 case FMODE_WRITE|FMODE_READ: 1473 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_WRITE); 1474 break; 1475 default: 1476 BUG(); 1477 } 1478 } 1479 1480 static inline void encode_claim_null(struct xdr_stream *xdr, const struct qstr *name) 1481 { 1482 __be32 *p; 1483 1484 p = reserve_space(xdr, 4); 1485 *p = cpu_to_be32(NFS4_OPEN_CLAIM_NULL); 1486 encode_string(xdr, name->len, name->name); 1487 } 1488 1489 static inline void encode_claim_previous(struct xdr_stream *xdr, fmode_t type) 1490 { 1491 __be32 *p; 1492 1493 p = reserve_space(xdr, 4); 1494 *p = cpu_to_be32(NFS4_OPEN_CLAIM_PREVIOUS); 1495 encode_delegation_type(xdr, type); 1496 } 1497 1498 static inline void encode_claim_delegate_cur(struct xdr_stream *xdr, const struct qstr *name, const nfs4_stateid *stateid) 1499 { 1500 __be32 *p; 1501 1502 p = reserve_space(xdr, 4); 1503 *p = cpu_to_be32(NFS4_OPEN_CLAIM_DELEGATE_CUR); 1504 encode_nfs4_stateid(xdr, stateid); 1505 encode_string(xdr, name->len, name->name); 1506 } 1507 1508 static inline void encode_claim_fh(struct xdr_stream *xdr) 1509 { 1510 __be32 *p; 1511 1512 p = reserve_space(xdr, 4); 1513 *p = cpu_to_be32(NFS4_OPEN_CLAIM_FH); 1514 } 1515 1516 static inline void encode_claim_delegate_cur_fh(struct xdr_stream *xdr, const nfs4_stateid *stateid) 1517 { 1518 __be32 *p; 1519 1520 p = reserve_space(xdr, 4); 1521 *p = cpu_to_be32(NFS4_OPEN_CLAIM_DELEG_CUR_FH); 1522 encode_nfs4_stateid(xdr, stateid); 1523 } 1524 1525 static void encode_open(struct xdr_stream *xdr, const struct nfs_openargs *arg, struct compound_hdr *hdr) 1526 { 1527 encode_op_hdr(xdr, OP_OPEN, decode_open_maxsz, hdr); 1528 encode_openhdr(xdr, arg); 1529 encode_opentype(xdr, arg); 1530 switch (arg->claim) { 1531 case NFS4_OPEN_CLAIM_NULL: 1532 encode_claim_null(xdr, arg->name); 1533 break; 1534 case NFS4_OPEN_CLAIM_PREVIOUS: 1535 encode_claim_previous(xdr, arg->u.delegation_type); 1536 break; 1537 case NFS4_OPEN_CLAIM_DELEGATE_CUR: 1538 encode_claim_delegate_cur(xdr, arg->name, &arg->u.delegation); 1539 break; 1540 case NFS4_OPEN_CLAIM_FH: 1541 encode_claim_fh(xdr); 1542 break; 1543 case NFS4_OPEN_CLAIM_DELEG_CUR_FH: 1544 encode_claim_delegate_cur_fh(xdr, &arg->u.delegation); 1545 break; 1546 default: 1547 BUG(); 1548 } 1549 } 1550 1551 static void encode_open_confirm(struct xdr_stream *xdr, const struct nfs_open_confirmargs *arg, struct compound_hdr *hdr) 1552 { 1553 encode_op_hdr(xdr, OP_OPEN_CONFIRM, decode_open_confirm_maxsz, hdr); 1554 encode_nfs4_stateid(xdr, arg->stateid); 1555 encode_nfs4_seqid(xdr, arg->seqid); 1556 } 1557 1558 static void encode_open_downgrade(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr) 1559 { 1560 encode_op_hdr(xdr, OP_OPEN_DOWNGRADE, decode_open_downgrade_maxsz, hdr); 1561 encode_nfs4_stateid(xdr, &arg->stateid); 1562 encode_nfs4_seqid(xdr, arg->seqid); 1563 encode_share_access(xdr, arg->share_access); 1564 } 1565 1566 static void 1567 encode_putfh(struct xdr_stream *xdr, const struct nfs_fh *fh, struct compound_hdr *hdr) 1568 { 1569 encode_op_hdr(xdr, OP_PUTFH, decode_putfh_maxsz, hdr); 1570 encode_string(xdr, fh->size, fh->data); 1571 } 1572 1573 static void encode_putrootfh(struct xdr_stream *xdr, struct compound_hdr *hdr) 1574 { 1575 encode_op_hdr(xdr, OP_PUTROOTFH, decode_putrootfh_maxsz, hdr); 1576 } 1577 1578 static void encode_read(struct xdr_stream *xdr, const struct nfs_pgio_args *args, 1579 struct compound_hdr *hdr) 1580 { 1581 __be32 *p; 1582 1583 encode_op_hdr(xdr, OP_READ, decode_read_maxsz, hdr); 1584 encode_nfs4_stateid(xdr, &args->stateid); 1585 1586 p = reserve_space(xdr, 12); 1587 p = xdr_encode_hyper(p, args->offset); 1588 *p = cpu_to_be32(args->count); 1589 } 1590 1591 static void encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg *readdir, struct rpc_rqst *req, struct compound_hdr *hdr) 1592 { 1593 uint32_t attrs[3] = { 1594 FATTR4_WORD0_RDATTR_ERROR, 1595 FATTR4_WORD1_MOUNTED_ON_FILEID, 1596 }; 1597 uint32_t dircount = readdir->count >> 1; 1598 __be32 *p, verf[2]; 1599 uint32_t attrlen = 0; 1600 unsigned int i; 1601 1602 if (readdir->plus) { 1603 attrs[0] |= FATTR4_WORD0_TYPE|FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE| 1604 FATTR4_WORD0_FSID|FATTR4_WORD0_FILEHANDLE|FATTR4_WORD0_FILEID; 1605 attrs[1] |= FATTR4_WORD1_MODE|FATTR4_WORD1_NUMLINKS|FATTR4_WORD1_OWNER| 1606 FATTR4_WORD1_OWNER_GROUP|FATTR4_WORD1_RAWDEV| 1607 FATTR4_WORD1_SPACE_USED|FATTR4_WORD1_TIME_ACCESS| 1608 FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY; 1609 attrs[2] |= FATTR4_WORD2_SECURITY_LABEL; 1610 dircount >>= 1; 1611 } 1612 /* Use mounted_on_fileid only if the server supports it */ 1613 if (!(readdir->bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)) 1614 attrs[0] |= FATTR4_WORD0_FILEID; 1615 for (i = 0; i < ARRAY_SIZE(attrs); i++) { 1616 attrs[i] &= readdir->bitmask[i]; 1617 if (attrs[i] != 0) 1618 attrlen = i+1; 1619 } 1620 1621 encode_op_hdr(xdr, OP_READDIR, decode_readdir_maxsz, hdr); 1622 encode_uint64(xdr, readdir->cookie); 1623 encode_nfs4_verifier(xdr, &readdir->verifier); 1624 p = reserve_space(xdr, 12 + (attrlen << 2)); 1625 *p++ = cpu_to_be32(dircount); 1626 *p++ = cpu_to_be32(readdir->count); 1627 *p++ = cpu_to_be32(attrlen); 1628 for (i = 0; i < attrlen; i++) 1629 *p++ = cpu_to_be32(attrs[i]); 1630 memcpy(verf, readdir->verifier.data, sizeof(verf)); 1631 1632 dprintk("%s: cookie = %llu, verifier = %08x:%08x, bitmap = %08x:%08x:%08x\n", 1633 __func__, 1634 (unsigned long long)readdir->cookie, 1635 verf[0], verf[1], 1636 attrs[0] & readdir->bitmask[0], 1637 attrs[1] & readdir->bitmask[1], 1638 attrs[2] & readdir->bitmask[2]); 1639 } 1640 1641 static void encode_readlink(struct xdr_stream *xdr, const struct nfs4_readlink *readlink, struct rpc_rqst *req, struct compound_hdr *hdr) 1642 { 1643 encode_op_hdr(xdr, OP_READLINK, decode_readlink_maxsz, hdr); 1644 } 1645 1646 static void encode_remove(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr) 1647 { 1648 encode_op_hdr(xdr, OP_REMOVE, decode_remove_maxsz, hdr); 1649 encode_string(xdr, name->len, name->name); 1650 } 1651 1652 static void encode_rename(struct xdr_stream *xdr, const struct qstr *oldname, const struct qstr *newname, struct compound_hdr *hdr) 1653 { 1654 encode_op_hdr(xdr, OP_RENAME, decode_rename_maxsz, hdr); 1655 encode_string(xdr, oldname->len, oldname->name); 1656 encode_string(xdr, newname->len, newname->name); 1657 } 1658 1659 static void encode_renew(struct xdr_stream *xdr, clientid4 clid, 1660 struct compound_hdr *hdr) 1661 { 1662 encode_op_hdr(xdr, OP_RENEW, decode_renew_maxsz, hdr); 1663 encode_uint64(xdr, clid); 1664 } 1665 1666 static void 1667 encode_restorefh(struct xdr_stream *xdr, struct compound_hdr *hdr) 1668 { 1669 encode_op_hdr(xdr, OP_RESTOREFH, decode_restorefh_maxsz, hdr); 1670 } 1671 1672 static void 1673 encode_setacl(struct xdr_stream *xdr, const struct nfs_setaclargs *arg, 1674 struct compound_hdr *hdr) 1675 { 1676 __be32 *p; 1677 1678 encode_op_hdr(xdr, OP_SETATTR, decode_setacl_maxsz, hdr); 1679 encode_nfs4_stateid(xdr, &zero_stateid); 1680 p = reserve_space(xdr, 2*4); 1681 *p++ = cpu_to_be32(1); 1682 *p = cpu_to_be32(FATTR4_WORD0_ACL); 1683 p = reserve_space(xdr, 4); 1684 *p = cpu_to_be32(arg->acl_len); 1685 xdr_write_pages(xdr, arg->acl_pages, 0, arg->acl_len); 1686 } 1687 1688 static void 1689 encode_savefh(struct xdr_stream *xdr, struct compound_hdr *hdr) 1690 { 1691 encode_op_hdr(xdr, OP_SAVEFH, decode_savefh_maxsz, hdr); 1692 } 1693 1694 static void encode_setattr(struct xdr_stream *xdr, const struct nfs_setattrargs *arg, const struct nfs_server *server, struct compound_hdr *hdr) 1695 { 1696 encode_op_hdr(xdr, OP_SETATTR, decode_setattr_maxsz, hdr); 1697 encode_nfs4_stateid(xdr, &arg->stateid); 1698 encode_attrs(xdr, arg->iap, arg->label, NULL, server, 1699 server->attr_bitmask); 1700 } 1701 1702 static void encode_setclientid(struct xdr_stream *xdr, const struct nfs4_setclientid *setclientid, struct compound_hdr *hdr) 1703 { 1704 __be32 *p; 1705 1706 encode_op_hdr(xdr, OP_SETCLIENTID, decode_setclientid_maxsz, hdr); 1707 encode_nfs4_verifier(xdr, setclientid->sc_verifier); 1708 1709 encode_string(xdr, strlen(setclientid->sc_clnt->cl_owner_id), 1710 setclientid->sc_clnt->cl_owner_id); 1711 p = reserve_space(xdr, 4); 1712 *p = cpu_to_be32(setclientid->sc_prog); 1713 encode_string(xdr, setclientid->sc_netid_len, setclientid->sc_netid); 1714 encode_string(xdr, setclientid->sc_uaddr_len, setclientid->sc_uaddr); 1715 p = reserve_space(xdr, 4); 1716 *p = cpu_to_be32(setclientid->sc_clnt->cl_cb_ident); 1717 } 1718 1719 static void encode_setclientid_confirm(struct xdr_stream *xdr, const struct nfs4_setclientid_res *arg, struct compound_hdr *hdr) 1720 { 1721 encode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM, 1722 decode_setclientid_confirm_maxsz, hdr); 1723 encode_uint64(xdr, arg->clientid); 1724 encode_nfs4_verifier(xdr, &arg->confirm); 1725 } 1726 1727 static void encode_write(struct xdr_stream *xdr, const struct nfs_pgio_args *args, 1728 struct compound_hdr *hdr) 1729 { 1730 __be32 *p; 1731 1732 encode_op_hdr(xdr, OP_WRITE, decode_write_maxsz, hdr); 1733 encode_nfs4_stateid(xdr, &args->stateid); 1734 1735 p = reserve_space(xdr, 16); 1736 p = xdr_encode_hyper(p, args->offset); 1737 *p++ = cpu_to_be32(args->stable); 1738 *p = cpu_to_be32(args->count); 1739 1740 xdr_write_pages(xdr, args->pages, args->pgbase, args->count); 1741 } 1742 1743 static void encode_delegreturn(struct xdr_stream *xdr, const nfs4_stateid *stateid, struct compound_hdr *hdr) 1744 { 1745 encode_op_hdr(xdr, OP_DELEGRETURN, decode_delegreturn_maxsz, hdr); 1746 encode_nfs4_stateid(xdr, stateid); 1747 } 1748 1749 static void encode_secinfo(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr) 1750 { 1751 encode_op_hdr(xdr, OP_SECINFO, decode_secinfo_maxsz, hdr); 1752 encode_string(xdr, name->len, name->name); 1753 } 1754 1755 #if defined(CONFIG_NFS_V4_1) 1756 /* NFSv4.1 operations */ 1757 static void encode_bind_conn_to_session(struct xdr_stream *xdr, 1758 const struct nfs41_bind_conn_to_session_args *args, 1759 struct compound_hdr *hdr) 1760 { 1761 __be32 *p; 1762 1763 encode_op_hdr(xdr, OP_BIND_CONN_TO_SESSION, 1764 decode_bind_conn_to_session_maxsz, hdr); 1765 encode_opaque_fixed(xdr, args->sessionid.data, NFS4_MAX_SESSIONID_LEN); 1766 p = xdr_reserve_space(xdr, 8); 1767 *p++ = cpu_to_be32(args->dir); 1768 *p = (args->use_conn_in_rdma_mode) ? cpu_to_be32(1) : cpu_to_be32(0); 1769 } 1770 1771 static void encode_op_map(struct xdr_stream *xdr, const struct nfs4_op_map *op_map) 1772 { 1773 unsigned int i; 1774 encode_uint32(xdr, NFS4_OP_MAP_NUM_WORDS); 1775 for (i = 0; i < NFS4_OP_MAP_NUM_WORDS; i++) 1776 encode_uint32(xdr, op_map->u.words[i]); 1777 } 1778 1779 static void encode_exchange_id(struct xdr_stream *xdr, 1780 const struct nfs41_exchange_id_args *args, 1781 struct compound_hdr *hdr) 1782 { 1783 __be32 *p; 1784 char impl_name[IMPL_NAME_LIMIT]; 1785 int len = 0; 1786 1787 encode_op_hdr(xdr, OP_EXCHANGE_ID, decode_exchange_id_maxsz, hdr); 1788 encode_nfs4_verifier(xdr, &args->verifier); 1789 1790 encode_string(xdr, strlen(args->client->cl_owner_id), 1791 args->client->cl_owner_id); 1792 1793 encode_uint32(xdr, args->flags); 1794 encode_uint32(xdr, args->state_protect.how); 1795 1796 switch (args->state_protect.how) { 1797 case SP4_NONE: 1798 break; 1799 case SP4_MACH_CRED: 1800 encode_op_map(xdr, &args->state_protect.enforce); 1801 encode_op_map(xdr, &args->state_protect.allow); 1802 break; 1803 default: 1804 WARN_ON_ONCE(1); 1805 break; 1806 } 1807 1808 if (send_implementation_id && 1809 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN) > 1 && 1810 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN) 1811 <= sizeof(impl_name) + 1) 1812 len = snprintf(impl_name, sizeof(impl_name), "%s %s %s %s", 1813 utsname()->sysname, utsname()->release, 1814 utsname()->version, utsname()->machine); 1815 1816 if (len > 0) { 1817 encode_uint32(xdr, 1); /* implementation id array length=1 */ 1818 1819 encode_string(xdr, 1820 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN) - 1, 1821 CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN); 1822 encode_string(xdr, len, impl_name); 1823 /* just send zeros for nii_date - the date is in nii_name */ 1824 p = reserve_space(xdr, 12); 1825 p = xdr_encode_hyper(p, 0); 1826 *p = cpu_to_be32(0); 1827 } else 1828 encode_uint32(xdr, 0); /* implementation id array length=0 */ 1829 } 1830 1831 static void encode_create_session(struct xdr_stream *xdr, 1832 const struct nfs41_create_session_args *args, 1833 struct compound_hdr *hdr) 1834 { 1835 __be32 *p; 1836 struct nfs_client *clp = args->client; 1837 struct rpc_clnt *clnt = clp->cl_rpcclient; 1838 struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id); 1839 u32 max_resp_sz_cached; 1840 1841 /* 1842 * Assumes OPEN is the biggest non-idempotent compound. 1843 * 2 is the verifier. 1844 */ 1845 max_resp_sz_cached = (NFS4_dec_open_sz + RPC_REPHDRSIZE + 2) 1846 * XDR_UNIT + RPC_MAX_AUTH_SIZE; 1847 1848 encode_op_hdr(xdr, OP_CREATE_SESSION, decode_create_session_maxsz, hdr); 1849 p = reserve_space(xdr, 16 + 2*28 + 20 + clnt->cl_nodelen + 12); 1850 p = xdr_encode_hyper(p, args->clientid); 1851 *p++ = cpu_to_be32(args->seqid); /*Sequence id */ 1852 *p++ = cpu_to_be32(args->flags); /*flags */ 1853 1854 /* Fore Channel */ 1855 *p++ = cpu_to_be32(0); /* header padding size */ 1856 *p++ = cpu_to_be32(args->fc_attrs.max_rqst_sz); /* max req size */ 1857 *p++ = cpu_to_be32(args->fc_attrs.max_resp_sz); /* max resp size */ 1858 *p++ = cpu_to_be32(max_resp_sz_cached); /* Max resp sz cached */ 1859 *p++ = cpu_to_be32(args->fc_attrs.max_ops); /* max operations */ 1860 *p++ = cpu_to_be32(args->fc_attrs.max_reqs); /* max requests */ 1861 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */ 1862 1863 /* Back Channel */ 1864 *p++ = cpu_to_be32(0); /* header padding size */ 1865 *p++ = cpu_to_be32(args->bc_attrs.max_rqst_sz); /* max req size */ 1866 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz); /* max resp size */ 1867 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz_cached); /* Max resp sz cached */ 1868 *p++ = cpu_to_be32(args->bc_attrs.max_ops); /* max operations */ 1869 *p++ = cpu_to_be32(args->bc_attrs.max_reqs); /* max requests */ 1870 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */ 1871 1872 *p++ = cpu_to_be32(args->cb_program); /* cb_program */ 1873 *p++ = cpu_to_be32(1); 1874 *p++ = cpu_to_be32(RPC_AUTH_UNIX); /* auth_sys */ 1875 1876 /* authsys_parms rfc1831 */ 1877 *p++ = cpu_to_be32(ktime_to_ns(nn->boot_time)); /* stamp */ 1878 p = xdr_encode_array(p, clnt->cl_nodename, clnt->cl_nodelen); 1879 *p++ = cpu_to_be32(0); /* UID */ 1880 *p++ = cpu_to_be32(0); /* GID */ 1881 *p = cpu_to_be32(0); /* No more gids */ 1882 } 1883 1884 static void encode_destroy_session(struct xdr_stream *xdr, 1885 const struct nfs4_session *session, 1886 struct compound_hdr *hdr) 1887 { 1888 encode_op_hdr(xdr, OP_DESTROY_SESSION, decode_destroy_session_maxsz, hdr); 1889 encode_opaque_fixed(xdr, session->sess_id.data, NFS4_MAX_SESSIONID_LEN); 1890 } 1891 1892 static void encode_destroy_clientid(struct xdr_stream *xdr, 1893 uint64_t clientid, 1894 struct compound_hdr *hdr) 1895 { 1896 encode_op_hdr(xdr, OP_DESTROY_CLIENTID, decode_destroy_clientid_maxsz, hdr); 1897 encode_uint64(xdr, clientid); 1898 } 1899 1900 static void encode_reclaim_complete(struct xdr_stream *xdr, 1901 const struct nfs41_reclaim_complete_args *args, 1902 struct compound_hdr *hdr) 1903 { 1904 encode_op_hdr(xdr, OP_RECLAIM_COMPLETE, decode_reclaim_complete_maxsz, hdr); 1905 encode_uint32(xdr, args->one_fs); 1906 } 1907 #endif /* CONFIG_NFS_V4_1 */ 1908 1909 static void encode_sequence(struct xdr_stream *xdr, 1910 const struct nfs4_sequence_args *args, 1911 struct compound_hdr *hdr) 1912 { 1913 #if defined(CONFIG_NFS_V4_1) 1914 struct nfs4_session *session; 1915 struct nfs4_slot_table *tp; 1916 struct nfs4_slot *slot = args->sa_slot; 1917 __be32 *p; 1918 1919 tp = slot->table; 1920 session = tp->session; 1921 if (!session) 1922 return; 1923 1924 encode_op_hdr(xdr, OP_SEQUENCE, decode_sequence_maxsz, hdr); 1925 1926 /* 1927 * Sessionid + seqid + slotid + max slotid + cache_this 1928 */ 1929 dprintk("%s: sessionid=%u:%u:%u:%u seqid=%d slotid=%d " 1930 "max_slotid=%d cache_this=%d\n", 1931 __func__, 1932 ((u32 *)session->sess_id.data)[0], 1933 ((u32 *)session->sess_id.data)[1], 1934 ((u32 *)session->sess_id.data)[2], 1935 ((u32 *)session->sess_id.data)[3], 1936 slot->seq_nr, slot->slot_nr, 1937 tp->highest_used_slotid, args->sa_cache_this); 1938 p = reserve_space(xdr, NFS4_MAX_SESSIONID_LEN + 16); 1939 p = xdr_encode_opaque_fixed(p, session->sess_id.data, NFS4_MAX_SESSIONID_LEN); 1940 *p++ = cpu_to_be32(slot->seq_nr); 1941 *p++ = cpu_to_be32(slot->slot_nr); 1942 *p++ = cpu_to_be32(tp->highest_used_slotid); 1943 *p = cpu_to_be32(args->sa_cache_this); 1944 #endif /* CONFIG_NFS_V4_1 */ 1945 } 1946 1947 #ifdef CONFIG_NFS_V4_1 1948 static void 1949 encode_getdeviceinfo(struct xdr_stream *xdr, 1950 const struct nfs4_getdeviceinfo_args *args, 1951 struct compound_hdr *hdr) 1952 { 1953 __be32 *p; 1954 1955 encode_op_hdr(xdr, OP_GETDEVICEINFO, decode_getdeviceinfo_maxsz, hdr); 1956 p = reserve_space(xdr, NFS4_DEVICEID4_SIZE + 4 + 4); 1957 p = xdr_encode_opaque_fixed(p, args->pdev->dev_id.data, 1958 NFS4_DEVICEID4_SIZE); 1959 *p++ = cpu_to_be32(args->pdev->layout_type); 1960 *p++ = cpu_to_be32(args->pdev->maxcount); /* gdia_maxcount */ 1961 1962 p = reserve_space(xdr, 4 + 4); 1963 *p++ = cpu_to_be32(1); /* bitmap length */ 1964 *p++ = cpu_to_be32(args->notify_types); 1965 } 1966 1967 static void 1968 encode_layoutget(struct xdr_stream *xdr, 1969 const struct nfs4_layoutget_args *args, 1970 struct compound_hdr *hdr) 1971 { 1972 __be32 *p; 1973 1974 encode_op_hdr(xdr, OP_LAYOUTGET, decode_layoutget_maxsz, hdr); 1975 p = reserve_space(xdr, 36); 1976 *p++ = cpu_to_be32(0); /* Signal layout available */ 1977 *p++ = cpu_to_be32(args->type); 1978 *p++ = cpu_to_be32(args->range.iomode); 1979 p = xdr_encode_hyper(p, args->range.offset); 1980 p = xdr_encode_hyper(p, args->range.length); 1981 p = xdr_encode_hyper(p, args->minlength); 1982 encode_nfs4_stateid(xdr, &args->stateid); 1983 encode_uint32(xdr, args->maxcount); 1984 1985 dprintk("%s: 1st type:0x%x iomode:%d off:%lu len:%lu mc:%d\n", 1986 __func__, 1987 args->type, 1988 args->range.iomode, 1989 (unsigned long)args->range.offset, 1990 (unsigned long)args->range.length, 1991 args->maxcount); 1992 } 1993 1994 static int 1995 encode_layoutcommit(struct xdr_stream *xdr, 1996 struct inode *inode, 1997 const struct nfs4_layoutcommit_args *args, 1998 struct compound_hdr *hdr) 1999 { 2000 __be32 *p; 2001 2002 dprintk("%s: lbw: %llu type: %d\n", __func__, args->lastbytewritten, 2003 NFS_SERVER(args->inode)->pnfs_curr_ld->id); 2004 2005 encode_op_hdr(xdr, OP_LAYOUTCOMMIT, decode_layoutcommit_maxsz, hdr); 2006 p = reserve_space(xdr, 20); 2007 /* Only whole file layouts */ 2008 p = xdr_encode_hyper(p, 0); /* offset */ 2009 p = xdr_encode_hyper(p, args->lastbytewritten + 1); /* length */ 2010 *p = cpu_to_be32(0); /* reclaim */ 2011 encode_nfs4_stateid(xdr, &args->stateid); 2012 if (args->lastbytewritten != U64_MAX) { 2013 p = reserve_space(xdr, 20); 2014 *p++ = cpu_to_be32(1); /* newoffset = TRUE */ 2015 p = xdr_encode_hyper(p, args->lastbytewritten); 2016 } else { 2017 p = reserve_space(xdr, 12); 2018 *p++ = cpu_to_be32(0); /* newoffset = FALSE */ 2019 } 2020 *p++ = cpu_to_be32(0); /* Never send time_modify_changed */ 2021 *p++ = cpu_to_be32(NFS_SERVER(args->inode)->pnfs_curr_ld->id);/* type */ 2022 2023 encode_uint32(xdr, args->layoutupdate_len); 2024 if (args->layoutupdate_pages) 2025 xdr_write_pages(xdr, args->layoutupdate_pages, 0, 2026 args->layoutupdate_len); 2027 2028 return 0; 2029 } 2030 2031 static void 2032 encode_layoutreturn(struct xdr_stream *xdr, 2033 const struct nfs4_layoutreturn_args *args, 2034 struct compound_hdr *hdr) 2035 { 2036 __be32 *p; 2037 2038 encode_op_hdr(xdr, OP_LAYOUTRETURN, decode_layoutreturn_maxsz, hdr); 2039 p = reserve_space(xdr, 16); 2040 *p++ = cpu_to_be32(0); /* reclaim. always 0 for now */ 2041 *p++ = cpu_to_be32(args->layout_type); 2042 *p++ = cpu_to_be32(args->range.iomode); 2043 *p = cpu_to_be32(RETURN_FILE); 2044 p = reserve_space(xdr, 16); 2045 p = xdr_encode_hyper(p, args->range.offset); 2046 p = xdr_encode_hyper(p, args->range.length); 2047 spin_lock(&args->inode->i_lock); 2048 encode_nfs4_stateid(xdr, &args->stateid); 2049 spin_unlock(&args->inode->i_lock); 2050 if (args->ld_private->ops && args->ld_private->ops->encode) 2051 args->ld_private->ops->encode(xdr, args, args->ld_private); 2052 else 2053 encode_uint32(xdr, 0); 2054 } 2055 2056 static int 2057 encode_secinfo_no_name(struct xdr_stream *xdr, 2058 const struct nfs41_secinfo_no_name_args *args, 2059 struct compound_hdr *hdr) 2060 { 2061 encode_op_hdr(xdr, OP_SECINFO_NO_NAME, decode_secinfo_no_name_maxsz, hdr); 2062 encode_uint32(xdr, args->style); 2063 return 0; 2064 } 2065 2066 static void encode_test_stateid(struct xdr_stream *xdr, 2067 const struct nfs41_test_stateid_args *args, 2068 struct compound_hdr *hdr) 2069 { 2070 encode_op_hdr(xdr, OP_TEST_STATEID, decode_test_stateid_maxsz, hdr); 2071 encode_uint32(xdr, 1); 2072 encode_nfs4_stateid(xdr, args->stateid); 2073 } 2074 2075 static void encode_free_stateid(struct xdr_stream *xdr, 2076 const struct nfs41_free_stateid_args *args, 2077 struct compound_hdr *hdr) 2078 { 2079 encode_op_hdr(xdr, OP_FREE_STATEID, decode_free_stateid_maxsz, hdr); 2080 encode_nfs4_stateid(xdr, &args->stateid); 2081 } 2082 #else 2083 static inline void 2084 encode_layoutreturn(struct xdr_stream *xdr, 2085 const struct nfs4_layoutreturn_args *args, 2086 struct compound_hdr *hdr) 2087 { 2088 } 2089 #endif /* CONFIG_NFS_V4_1 */ 2090 2091 /* 2092 * END OF "GENERIC" ENCODE ROUTINES. 2093 */ 2094 2095 static u32 nfs4_xdr_minorversion(const struct nfs4_sequence_args *args) 2096 { 2097 #if defined(CONFIG_NFS_V4_1) 2098 struct nfs4_session *session = args->sa_slot->table->session; 2099 if (session) 2100 return session->clp->cl_mvops->minor_version; 2101 #endif /* CONFIG_NFS_V4_1 */ 2102 return 0; 2103 } 2104 2105 /* 2106 * Encode an ACCESS request 2107 */ 2108 static void nfs4_xdr_enc_access(struct rpc_rqst *req, struct xdr_stream *xdr, 2109 const void *data) 2110 { 2111 const struct nfs4_accessargs *args = data; 2112 struct compound_hdr hdr = { 2113 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2114 }; 2115 2116 encode_compound_hdr(xdr, req, &hdr); 2117 encode_sequence(xdr, &args->seq_args, &hdr); 2118 encode_putfh(xdr, args->fh, &hdr); 2119 encode_access(xdr, args->access, &hdr); 2120 encode_getfattr(xdr, args->bitmask, &hdr); 2121 encode_nops(&hdr); 2122 } 2123 2124 /* 2125 * Encode LOOKUP request 2126 */ 2127 static void nfs4_xdr_enc_lookup(struct rpc_rqst *req, struct xdr_stream *xdr, 2128 const void *data) 2129 { 2130 const struct nfs4_lookup_arg *args = data; 2131 struct compound_hdr hdr = { 2132 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2133 }; 2134 2135 encode_compound_hdr(xdr, req, &hdr); 2136 encode_sequence(xdr, &args->seq_args, &hdr); 2137 encode_putfh(xdr, args->dir_fh, &hdr); 2138 encode_lookup(xdr, args->name, &hdr); 2139 encode_getfh(xdr, &hdr); 2140 encode_getfattr(xdr, args->bitmask, &hdr); 2141 encode_nops(&hdr); 2142 } 2143 2144 /* 2145 * Encode LOOKUPP request 2146 */ 2147 static void nfs4_xdr_enc_lookupp(struct rpc_rqst *req, struct xdr_stream *xdr, 2148 const void *data) 2149 { 2150 const struct nfs4_lookupp_arg *args = data; 2151 struct compound_hdr hdr = { 2152 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2153 }; 2154 2155 encode_compound_hdr(xdr, req, &hdr); 2156 encode_sequence(xdr, &args->seq_args, &hdr); 2157 encode_putfh(xdr, args->fh, &hdr); 2158 encode_lookupp(xdr, &hdr); 2159 encode_getfh(xdr, &hdr); 2160 encode_getfattr(xdr, args->bitmask, &hdr); 2161 encode_nops(&hdr); 2162 } 2163 2164 /* 2165 * Encode LOOKUP_ROOT request 2166 */ 2167 static void nfs4_xdr_enc_lookup_root(struct rpc_rqst *req, 2168 struct xdr_stream *xdr, 2169 const void *data) 2170 { 2171 const struct nfs4_lookup_root_arg *args = data; 2172 struct compound_hdr hdr = { 2173 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2174 }; 2175 2176 encode_compound_hdr(xdr, req, &hdr); 2177 encode_sequence(xdr, &args->seq_args, &hdr); 2178 encode_putrootfh(xdr, &hdr); 2179 encode_getfh(xdr, &hdr); 2180 encode_getfattr(xdr, args->bitmask, &hdr); 2181 encode_nops(&hdr); 2182 } 2183 2184 /* 2185 * Encode REMOVE request 2186 */ 2187 static void nfs4_xdr_enc_remove(struct rpc_rqst *req, struct xdr_stream *xdr, 2188 const void *data) 2189 { 2190 const struct nfs_removeargs *args = data; 2191 struct compound_hdr hdr = { 2192 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2193 }; 2194 2195 encode_compound_hdr(xdr, req, &hdr); 2196 encode_sequence(xdr, &args->seq_args, &hdr); 2197 encode_putfh(xdr, args->fh, &hdr); 2198 encode_remove(xdr, &args->name, &hdr); 2199 encode_nops(&hdr); 2200 } 2201 2202 /* 2203 * Encode RENAME request 2204 */ 2205 static void nfs4_xdr_enc_rename(struct rpc_rqst *req, struct xdr_stream *xdr, 2206 const void *data) 2207 { 2208 const struct nfs_renameargs *args = data; 2209 struct compound_hdr hdr = { 2210 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2211 }; 2212 2213 encode_compound_hdr(xdr, req, &hdr); 2214 encode_sequence(xdr, &args->seq_args, &hdr); 2215 encode_putfh(xdr, args->old_dir, &hdr); 2216 encode_savefh(xdr, &hdr); 2217 encode_putfh(xdr, args->new_dir, &hdr); 2218 encode_rename(xdr, args->old_name, args->new_name, &hdr); 2219 encode_nops(&hdr); 2220 } 2221 2222 /* 2223 * Encode LINK request 2224 */ 2225 static void nfs4_xdr_enc_link(struct rpc_rqst *req, struct xdr_stream *xdr, 2226 const void *data) 2227 { 2228 const struct nfs4_link_arg *args = data; 2229 struct compound_hdr hdr = { 2230 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2231 }; 2232 2233 encode_compound_hdr(xdr, req, &hdr); 2234 encode_sequence(xdr, &args->seq_args, &hdr); 2235 encode_putfh(xdr, args->fh, &hdr); 2236 encode_savefh(xdr, &hdr); 2237 encode_putfh(xdr, args->dir_fh, &hdr); 2238 encode_link(xdr, args->name, &hdr); 2239 encode_restorefh(xdr, &hdr); 2240 encode_getfattr(xdr, args->bitmask, &hdr); 2241 encode_nops(&hdr); 2242 } 2243 2244 /* 2245 * Encode CREATE request 2246 */ 2247 static void nfs4_xdr_enc_create(struct rpc_rqst *req, struct xdr_stream *xdr, 2248 const void *data) 2249 { 2250 const struct nfs4_create_arg *args = data; 2251 struct compound_hdr hdr = { 2252 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2253 }; 2254 2255 encode_compound_hdr(xdr, req, &hdr); 2256 encode_sequence(xdr, &args->seq_args, &hdr); 2257 encode_putfh(xdr, args->dir_fh, &hdr); 2258 encode_create(xdr, args, &hdr); 2259 encode_getfh(xdr, &hdr); 2260 encode_getfattr(xdr, args->bitmask, &hdr); 2261 encode_nops(&hdr); 2262 } 2263 2264 /* 2265 * Encode SYMLINK request 2266 */ 2267 static void nfs4_xdr_enc_symlink(struct rpc_rqst *req, struct xdr_stream *xdr, 2268 const void *data) 2269 { 2270 const struct nfs4_create_arg *args = data; 2271 2272 nfs4_xdr_enc_create(req, xdr, args); 2273 } 2274 2275 /* 2276 * Encode GETATTR request 2277 */ 2278 static void nfs4_xdr_enc_getattr(struct rpc_rqst *req, struct xdr_stream *xdr, 2279 const void *data) 2280 { 2281 const struct nfs4_getattr_arg *args = data; 2282 struct compound_hdr hdr = { 2283 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2284 }; 2285 2286 encode_compound_hdr(xdr, req, &hdr); 2287 encode_sequence(xdr, &args->seq_args, &hdr); 2288 encode_putfh(xdr, args->fh, &hdr); 2289 encode_getfattr(xdr, args->bitmask, &hdr); 2290 encode_nops(&hdr); 2291 } 2292 2293 /* 2294 * Encode a CLOSE request 2295 */ 2296 static void nfs4_xdr_enc_close(struct rpc_rqst *req, struct xdr_stream *xdr, 2297 const void *data) 2298 { 2299 const struct nfs_closeargs *args = data; 2300 struct compound_hdr hdr = { 2301 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2302 }; 2303 2304 encode_compound_hdr(xdr, req, &hdr); 2305 encode_sequence(xdr, &args->seq_args, &hdr); 2306 encode_putfh(xdr, args->fh, &hdr); 2307 if (args->lr_args) 2308 encode_layoutreturn(xdr, args->lr_args, &hdr); 2309 if (args->bitmask != NULL) 2310 encode_getfattr(xdr, args->bitmask, &hdr); 2311 encode_close(xdr, args, &hdr); 2312 encode_nops(&hdr); 2313 } 2314 2315 /* 2316 * Encode an OPEN request 2317 */ 2318 static void nfs4_xdr_enc_open(struct rpc_rqst *req, struct xdr_stream *xdr, 2319 const void *data) 2320 { 2321 const struct nfs_openargs *args = data; 2322 struct compound_hdr hdr = { 2323 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2324 }; 2325 2326 encode_compound_hdr(xdr, req, &hdr); 2327 encode_sequence(xdr, &args->seq_args, &hdr); 2328 encode_putfh(xdr, args->fh, &hdr); 2329 encode_open(xdr, args, &hdr); 2330 encode_getfh(xdr, &hdr); 2331 if (args->access) 2332 encode_access(xdr, args->access, &hdr); 2333 encode_getfattr_open(xdr, args->bitmask, args->open_bitmap, &hdr); 2334 encode_nops(&hdr); 2335 } 2336 2337 /* 2338 * Encode an OPEN_CONFIRM request 2339 */ 2340 static void nfs4_xdr_enc_open_confirm(struct rpc_rqst *req, 2341 struct xdr_stream *xdr, 2342 const void *data) 2343 { 2344 const struct nfs_open_confirmargs *args = data; 2345 struct compound_hdr hdr = { 2346 .nops = 0, 2347 }; 2348 2349 encode_compound_hdr(xdr, req, &hdr); 2350 encode_putfh(xdr, args->fh, &hdr); 2351 encode_open_confirm(xdr, args, &hdr); 2352 encode_nops(&hdr); 2353 } 2354 2355 /* 2356 * Encode an OPEN request with no attributes. 2357 */ 2358 static void nfs4_xdr_enc_open_noattr(struct rpc_rqst *req, 2359 struct xdr_stream *xdr, 2360 const void *data) 2361 { 2362 const struct nfs_openargs *args = data; 2363 struct compound_hdr hdr = { 2364 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2365 }; 2366 2367 encode_compound_hdr(xdr, req, &hdr); 2368 encode_sequence(xdr, &args->seq_args, &hdr); 2369 encode_putfh(xdr, args->fh, &hdr); 2370 encode_open(xdr, args, &hdr); 2371 if (args->access) 2372 encode_access(xdr, args->access, &hdr); 2373 encode_getfattr_open(xdr, args->bitmask, args->open_bitmap, &hdr); 2374 encode_nops(&hdr); 2375 } 2376 2377 /* 2378 * Encode an OPEN_DOWNGRADE request 2379 */ 2380 static void nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req, 2381 struct xdr_stream *xdr, 2382 const void *data) 2383 { 2384 const struct nfs_closeargs *args = data; 2385 struct compound_hdr hdr = { 2386 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2387 }; 2388 2389 encode_compound_hdr(xdr, req, &hdr); 2390 encode_sequence(xdr, &args->seq_args, &hdr); 2391 encode_putfh(xdr, args->fh, &hdr); 2392 if (args->lr_args) 2393 encode_layoutreturn(xdr, args->lr_args, &hdr); 2394 encode_open_downgrade(xdr, args, &hdr); 2395 encode_nops(&hdr); 2396 } 2397 2398 /* 2399 * Encode a LOCK request 2400 */ 2401 static void nfs4_xdr_enc_lock(struct rpc_rqst *req, struct xdr_stream *xdr, 2402 const void *data) 2403 { 2404 const struct nfs_lock_args *args = data; 2405 struct compound_hdr hdr = { 2406 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2407 }; 2408 2409 encode_compound_hdr(xdr, req, &hdr); 2410 encode_sequence(xdr, &args->seq_args, &hdr); 2411 encode_putfh(xdr, args->fh, &hdr); 2412 encode_lock(xdr, args, &hdr); 2413 encode_nops(&hdr); 2414 } 2415 2416 /* 2417 * Encode a LOCKT request 2418 */ 2419 static void nfs4_xdr_enc_lockt(struct rpc_rqst *req, struct xdr_stream *xdr, 2420 const void *data) 2421 { 2422 const struct nfs_lockt_args *args = data; 2423 struct compound_hdr hdr = { 2424 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2425 }; 2426 2427 encode_compound_hdr(xdr, req, &hdr); 2428 encode_sequence(xdr, &args->seq_args, &hdr); 2429 encode_putfh(xdr, args->fh, &hdr); 2430 encode_lockt(xdr, args, &hdr); 2431 encode_nops(&hdr); 2432 } 2433 2434 /* 2435 * Encode a LOCKU request 2436 */ 2437 static void nfs4_xdr_enc_locku(struct rpc_rqst *req, struct xdr_stream *xdr, 2438 const void *data) 2439 { 2440 const struct nfs_locku_args *args = data; 2441 struct compound_hdr hdr = { 2442 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2443 }; 2444 2445 encode_compound_hdr(xdr, req, &hdr); 2446 encode_sequence(xdr, &args->seq_args, &hdr); 2447 encode_putfh(xdr, args->fh, &hdr); 2448 encode_locku(xdr, args, &hdr); 2449 encode_nops(&hdr); 2450 } 2451 2452 static void nfs4_xdr_enc_release_lockowner(struct rpc_rqst *req, 2453 struct xdr_stream *xdr, 2454 const void *data) 2455 { 2456 const struct nfs_release_lockowner_args *args = data; 2457 struct compound_hdr hdr = { 2458 .minorversion = 0, 2459 }; 2460 2461 encode_compound_hdr(xdr, req, &hdr); 2462 encode_release_lockowner(xdr, &args->lock_owner, &hdr); 2463 encode_nops(&hdr); 2464 } 2465 2466 /* 2467 * Encode a READLINK request 2468 */ 2469 static void nfs4_xdr_enc_readlink(struct rpc_rqst *req, struct xdr_stream *xdr, 2470 const void *data) 2471 { 2472 const struct nfs4_readlink *args = data; 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_readlink(xdr, args, req, &hdr); 2481 2482 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages, 2483 args->pgbase, args->pglen); 2484 encode_nops(&hdr); 2485 } 2486 2487 /* 2488 * Encode a READDIR request 2489 */ 2490 static void nfs4_xdr_enc_readdir(struct rpc_rqst *req, struct xdr_stream *xdr, 2491 const void *data) 2492 { 2493 const struct nfs4_readdir_arg *args = data; 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_readdir(xdr, args, req, &hdr); 2502 2503 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages, 2504 args->pgbase, args->count); 2505 dprintk("%s: inlined page args = (%u, %p, %u, %u)\n", 2506 __func__, hdr.replen << 2, args->pages, 2507 args->pgbase, args->count); 2508 encode_nops(&hdr); 2509 } 2510 2511 /* 2512 * Encode a READ request 2513 */ 2514 static void nfs4_xdr_enc_read(struct rpc_rqst *req, struct xdr_stream *xdr, 2515 const void *data) 2516 { 2517 const struct nfs_pgio_args *args = data; 2518 struct compound_hdr hdr = { 2519 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2520 }; 2521 2522 encode_compound_hdr(xdr, req, &hdr); 2523 encode_sequence(xdr, &args->seq_args, &hdr); 2524 encode_putfh(xdr, args->fh, &hdr); 2525 encode_read(xdr, args, &hdr); 2526 2527 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, 2528 args->pages, args->pgbase, args->count); 2529 req->rq_rcv_buf.flags |= XDRBUF_READ; 2530 encode_nops(&hdr); 2531 } 2532 2533 /* 2534 * Encode an SETATTR request 2535 */ 2536 static void nfs4_xdr_enc_setattr(struct rpc_rqst *req, struct xdr_stream *xdr, 2537 const void *data) 2538 { 2539 const struct nfs_setattrargs *args = data; 2540 struct compound_hdr hdr = { 2541 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2542 }; 2543 2544 encode_compound_hdr(xdr, req, &hdr); 2545 encode_sequence(xdr, &args->seq_args, &hdr); 2546 encode_putfh(xdr, args->fh, &hdr); 2547 encode_setattr(xdr, args, args->server, &hdr); 2548 encode_getfattr(xdr, args->bitmask, &hdr); 2549 encode_nops(&hdr); 2550 } 2551 2552 /* 2553 * Encode a GETACL request 2554 */ 2555 static void nfs4_xdr_enc_getacl(struct rpc_rqst *req, struct xdr_stream *xdr, 2556 const void *data) 2557 { 2558 const struct nfs_getaclargs *args = data; 2559 struct compound_hdr hdr = { 2560 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2561 }; 2562 uint32_t replen; 2563 2564 encode_compound_hdr(xdr, req, &hdr); 2565 encode_sequence(xdr, &args->seq_args, &hdr); 2566 encode_putfh(xdr, args->fh, &hdr); 2567 replen = hdr.replen + op_decode_hdr_maxsz; 2568 encode_getattr_two(xdr, FATTR4_WORD0_ACL, 0, &hdr); 2569 2570 xdr_inline_pages(&req->rq_rcv_buf, replen << 2, 2571 args->acl_pages, 0, args->acl_len); 2572 2573 encode_nops(&hdr); 2574 } 2575 2576 /* 2577 * Encode a WRITE request 2578 */ 2579 static void nfs4_xdr_enc_write(struct rpc_rqst *req, struct xdr_stream *xdr, 2580 const void *data) 2581 { 2582 const struct nfs_pgio_args *args = data; 2583 struct compound_hdr hdr = { 2584 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2585 }; 2586 2587 encode_compound_hdr(xdr, req, &hdr); 2588 encode_sequence(xdr, &args->seq_args, &hdr); 2589 encode_putfh(xdr, args->fh, &hdr); 2590 encode_write(xdr, args, &hdr); 2591 req->rq_snd_buf.flags |= XDRBUF_WRITE; 2592 if (args->bitmask) 2593 encode_getfattr(xdr, args->bitmask, &hdr); 2594 encode_nops(&hdr); 2595 } 2596 2597 /* 2598 * a COMMIT request 2599 */ 2600 static void nfs4_xdr_enc_commit(struct rpc_rqst *req, struct xdr_stream *xdr, 2601 const void *data) 2602 { 2603 const struct nfs_commitargs *args = data; 2604 struct compound_hdr hdr = { 2605 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2606 }; 2607 2608 encode_compound_hdr(xdr, req, &hdr); 2609 encode_sequence(xdr, &args->seq_args, &hdr); 2610 encode_putfh(xdr, args->fh, &hdr); 2611 encode_commit(xdr, args, &hdr); 2612 encode_nops(&hdr); 2613 } 2614 2615 /* 2616 * FSINFO request 2617 */ 2618 static void nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr, 2619 const void *data) 2620 { 2621 const struct nfs4_fsinfo_arg *args = data; 2622 struct compound_hdr hdr = { 2623 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2624 }; 2625 2626 encode_compound_hdr(xdr, req, &hdr); 2627 encode_sequence(xdr, &args->seq_args, &hdr); 2628 encode_putfh(xdr, args->fh, &hdr); 2629 encode_fsinfo(xdr, args->bitmask, &hdr); 2630 encode_nops(&hdr); 2631 } 2632 2633 /* 2634 * a PATHCONF request 2635 */ 2636 static void nfs4_xdr_enc_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr, 2637 const void *data) 2638 { 2639 const struct nfs4_pathconf_arg *args = data; 2640 struct compound_hdr hdr = { 2641 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2642 }; 2643 2644 encode_compound_hdr(xdr, req, &hdr); 2645 encode_sequence(xdr, &args->seq_args, &hdr); 2646 encode_putfh(xdr, args->fh, &hdr); 2647 encode_getattr_one(xdr, args->bitmask[0] & nfs4_pathconf_bitmap[0], 2648 &hdr); 2649 encode_nops(&hdr); 2650 } 2651 2652 /* 2653 * a STATFS request 2654 */ 2655 static void nfs4_xdr_enc_statfs(struct rpc_rqst *req, struct xdr_stream *xdr, 2656 const void *data) 2657 { 2658 const struct nfs4_statfs_arg *args = data; 2659 struct compound_hdr hdr = { 2660 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2661 }; 2662 2663 encode_compound_hdr(xdr, req, &hdr); 2664 encode_sequence(xdr, &args->seq_args, &hdr); 2665 encode_putfh(xdr, args->fh, &hdr); 2666 encode_getattr_two(xdr, args->bitmask[0] & nfs4_statfs_bitmap[0], 2667 args->bitmask[1] & nfs4_statfs_bitmap[1], &hdr); 2668 encode_nops(&hdr); 2669 } 2670 2671 /* 2672 * GETATTR_BITMAP request 2673 */ 2674 static void nfs4_xdr_enc_server_caps(struct rpc_rqst *req, 2675 struct xdr_stream *xdr, 2676 const void *data) 2677 { 2678 const struct nfs4_server_caps_arg *args = data; 2679 const u32 *bitmask = args->bitmask; 2680 struct compound_hdr hdr = { 2681 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2682 }; 2683 2684 encode_compound_hdr(xdr, req, &hdr); 2685 encode_sequence(xdr, &args->seq_args, &hdr); 2686 encode_putfh(xdr, args->fhandle, &hdr); 2687 encode_getattr_three(xdr, bitmask[0], bitmask[1], bitmask[2], &hdr); 2688 encode_nops(&hdr); 2689 } 2690 2691 /* 2692 * a RENEW request 2693 */ 2694 static void nfs4_xdr_enc_renew(struct rpc_rqst *req, struct xdr_stream *xdr, 2695 const void *data) 2696 2697 { 2698 const struct nfs_client *clp = data; 2699 struct compound_hdr hdr = { 2700 .nops = 0, 2701 }; 2702 2703 encode_compound_hdr(xdr, req, &hdr); 2704 encode_renew(xdr, clp->cl_clientid, &hdr); 2705 encode_nops(&hdr); 2706 } 2707 2708 /* 2709 * a SETCLIENTID request 2710 */ 2711 static void nfs4_xdr_enc_setclientid(struct rpc_rqst *req, 2712 struct xdr_stream *xdr, 2713 const void *data) 2714 { 2715 const struct nfs4_setclientid *sc = data; 2716 struct compound_hdr hdr = { 2717 .nops = 0, 2718 }; 2719 2720 encode_compound_hdr(xdr, req, &hdr); 2721 encode_setclientid(xdr, sc, &hdr); 2722 encode_nops(&hdr); 2723 } 2724 2725 /* 2726 * a SETCLIENTID_CONFIRM request 2727 */ 2728 static void nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req, 2729 struct xdr_stream *xdr, 2730 const void *data) 2731 { 2732 const struct nfs4_setclientid_res *arg = data; 2733 struct compound_hdr hdr = { 2734 .nops = 0, 2735 }; 2736 2737 encode_compound_hdr(xdr, req, &hdr); 2738 encode_setclientid_confirm(xdr, arg, &hdr); 2739 encode_nops(&hdr); 2740 } 2741 2742 /* 2743 * DELEGRETURN request 2744 */ 2745 static void nfs4_xdr_enc_delegreturn(struct rpc_rqst *req, 2746 struct xdr_stream *xdr, 2747 const void *data) 2748 { 2749 const struct nfs4_delegreturnargs *args = data; 2750 struct compound_hdr hdr = { 2751 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2752 }; 2753 2754 encode_compound_hdr(xdr, req, &hdr); 2755 encode_sequence(xdr, &args->seq_args, &hdr); 2756 encode_putfh(xdr, args->fhandle, &hdr); 2757 if (args->lr_args) 2758 encode_layoutreturn(xdr, args->lr_args, &hdr); 2759 if (args->bitmask) 2760 encode_getfattr(xdr, args->bitmask, &hdr); 2761 encode_delegreturn(xdr, args->stateid, &hdr); 2762 encode_nops(&hdr); 2763 } 2764 2765 /* 2766 * Encode FS_LOCATIONS request 2767 */ 2768 static void nfs4_xdr_enc_fs_locations(struct rpc_rqst *req, 2769 struct xdr_stream *xdr, 2770 const void *data) 2771 { 2772 const struct nfs4_fs_locations_arg *args = data; 2773 struct compound_hdr hdr = { 2774 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2775 }; 2776 uint32_t replen; 2777 2778 encode_compound_hdr(xdr, req, &hdr); 2779 encode_sequence(xdr, &args->seq_args, &hdr); 2780 if (args->migration) { 2781 encode_putfh(xdr, args->fh, &hdr); 2782 replen = hdr.replen; 2783 encode_fs_locations(xdr, args->bitmask, &hdr); 2784 if (args->renew) 2785 encode_renew(xdr, args->clientid, &hdr); 2786 } else { 2787 encode_putfh(xdr, args->dir_fh, &hdr); 2788 encode_lookup(xdr, args->name, &hdr); 2789 replen = hdr.replen; 2790 encode_fs_locations(xdr, args->bitmask, &hdr); 2791 } 2792 2793 /* Set up reply kvec to capture returned fs_locations array. */ 2794 xdr_inline_pages(&req->rq_rcv_buf, replen << 2, 2795 (struct page **)&args->page, 0, PAGE_SIZE); 2796 encode_nops(&hdr); 2797 } 2798 2799 /* 2800 * Encode SECINFO request 2801 */ 2802 static void nfs4_xdr_enc_secinfo(struct rpc_rqst *req, 2803 struct xdr_stream *xdr, 2804 const void *data) 2805 { 2806 const struct nfs4_secinfo_arg *args = data; 2807 struct compound_hdr hdr = { 2808 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2809 }; 2810 2811 encode_compound_hdr(xdr, req, &hdr); 2812 encode_sequence(xdr, &args->seq_args, &hdr); 2813 encode_putfh(xdr, args->dir_fh, &hdr); 2814 encode_secinfo(xdr, args->name, &hdr); 2815 encode_nops(&hdr); 2816 } 2817 2818 /* 2819 * Encode FSID_PRESENT request 2820 */ 2821 static void nfs4_xdr_enc_fsid_present(struct rpc_rqst *req, 2822 struct xdr_stream *xdr, 2823 const void *data) 2824 { 2825 const struct nfs4_fsid_present_arg *args = data; 2826 struct compound_hdr hdr = { 2827 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2828 }; 2829 2830 encode_compound_hdr(xdr, req, &hdr); 2831 encode_sequence(xdr, &args->seq_args, &hdr); 2832 encode_putfh(xdr, args->fh, &hdr); 2833 encode_getfh(xdr, &hdr); 2834 if (args->renew) 2835 encode_renew(xdr, args->clientid, &hdr); 2836 encode_nops(&hdr); 2837 } 2838 2839 #if defined(CONFIG_NFS_V4_1) 2840 /* 2841 * BIND_CONN_TO_SESSION request 2842 */ 2843 static void nfs4_xdr_enc_bind_conn_to_session(struct rpc_rqst *req, 2844 struct xdr_stream *xdr, 2845 const void *data) 2846 { 2847 const struct nfs41_bind_conn_to_session_args *args = data; 2848 struct compound_hdr hdr = { 2849 .minorversion = args->client->cl_mvops->minor_version, 2850 }; 2851 2852 encode_compound_hdr(xdr, req, &hdr); 2853 encode_bind_conn_to_session(xdr, args, &hdr); 2854 encode_nops(&hdr); 2855 } 2856 2857 /* 2858 * EXCHANGE_ID request 2859 */ 2860 static void nfs4_xdr_enc_exchange_id(struct rpc_rqst *req, 2861 struct xdr_stream *xdr, 2862 const void *data) 2863 { 2864 const struct nfs41_exchange_id_args *args = data; 2865 struct compound_hdr hdr = { 2866 .minorversion = args->client->cl_mvops->minor_version, 2867 }; 2868 2869 encode_compound_hdr(xdr, req, &hdr); 2870 encode_exchange_id(xdr, args, &hdr); 2871 encode_nops(&hdr); 2872 } 2873 2874 /* 2875 * a CREATE_SESSION request 2876 */ 2877 static void nfs4_xdr_enc_create_session(struct rpc_rqst *req, 2878 struct xdr_stream *xdr, 2879 const void *data) 2880 { 2881 const struct nfs41_create_session_args *args = data; 2882 struct compound_hdr hdr = { 2883 .minorversion = args->client->cl_mvops->minor_version, 2884 }; 2885 2886 encode_compound_hdr(xdr, req, &hdr); 2887 encode_create_session(xdr, args, &hdr); 2888 encode_nops(&hdr); 2889 } 2890 2891 /* 2892 * a DESTROY_SESSION request 2893 */ 2894 static void nfs4_xdr_enc_destroy_session(struct rpc_rqst *req, 2895 struct xdr_stream *xdr, 2896 const void *data) 2897 { 2898 const struct nfs4_session *session = data; 2899 struct compound_hdr hdr = { 2900 .minorversion = session->clp->cl_mvops->minor_version, 2901 }; 2902 2903 encode_compound_hdr(xdr, req, &hdr); 2904 encode_destroy_session(xdr, session, &hdr); 2905 encode_nops(&hdr); 2906 } 2907 2908 /* 2909 * a DESTROY_CLIENTID request 2910 */ 2911 static void nfs4_xdr_enc_destroy_clientid(struct rpc_rqst *req, 2912 struct xdr_stream *xdr, 2913 const void *data) 2914 { 2915 const struct nfs_client *clp = data; 2916 struct compound_hdr hdr = { 2917 .minorversion = clp->cl_mvops->minor_version, 2918 }; 2919 2920 encode_compound_hdr(xdr, req, &hdr); 2921 encode_destroy_clientid(xdr, clp->cl_clientid, &hdr); 2922 encode_nops(&hdr); 2923 } 2924 2925 /* 2926 * a SEQUENCE request 2927 */ 2928 static void nfs4_xdr_enc_sequence(struct rpc_rqst *req, struct xdr_stream *xdr, 2929 const void *data) 2930 { 2931 const struct nfs4_sequence_args *args = data; 2932 struct compound_hdr hdr = { 2933 .minorversion = nfs4_xdr_minorversion(args), 2934 }; 2935 2936 encode_compound_hdr(xdr, req, &hdr); 2937 encode_sequence(xdr, args, &hdr); 2938 encode_nops(&hdr); 2939 } 2940 2941 /* 2942 * a GET_LEASE_TIME request 2943 */ 2944 static void nfs4_xdr_enc_get_lease_time(struct rpc_rqst *req, 2945 struct xdr_stream *xdr, 2946 const void *data) 2947 { 2948 const struct nfs4_get_lease_time_args *args = data; 2949 struct compound_hdr hdr = { 2950 .minorversion = nfs4_xdr_minorversion(&args->la_seq_args), 2951 }; 2952 const u32 lease_bitmap[3] = { FATTR4_WORD0_LEASE_TIME }; 2953 2954 encode_compound_hdr(xdr, req, &hdr); 2955 encode_sequence(xdr, &args->la_seq_args, &hdr); 2956 encode_putrootfh(xdr, &hdr); 2957 encode_fsinfo(xdr, lease_bitmap, &hdr); 2958 encode_nops(&hdr); 2959 } 2960 2961 /* 2962 * a RECLAIM_COMPLETE request 2963 */ 2964 static void nfs4_xdr_enc_reclaim_complete(struct rpc_rqst *req, 2965 struct xdr_stream *xdr, 2966 const void *data) 2967 { 2968 const struct nfs41_reclaim_complete_args *args = data; 2969 struct compound_hdr hdr = { 2970 .minorversion = nfs4_xdr_minorversion(&args->seq_args) 2971 }; 2972 2973 encode_compound_hdr(xdr, req, &hdr); 2974 encode_sequence(xdr, &args->seq_args, &hdr); 2975 encode_reclaim_complete(xdr, args, &hdr); 2976 encode_nops(&hdr); 2977 } 2978 2979 /* 2980 * Encode GETDEVICEINFO request 2981 */ 2982 static void nfs4_xdr_enc_getdeviceinfo(struct rpc_rqst *req, 2983 struct xdr_stream *xdr, 2984 const void *data) 2985 { 2986 const struct nfs4_getdeviceinfo_args *args = data; 2987 struct compound_hdr hdr = { 2988 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2989 }; 2990 2991 encode_compound_hdr(xdr, req, &hdr); 2992 encode_sequence(xdr, &args->seq_args, &hdr); 2993 encode_getdeviceinfo(xdr, args, &hdr); 2994 2995 /* set up reply kvec. Subtract notification bitmap max size (2) 2996 * so that notification bitmap is put in xdr_buf tail */ 2997 xdr_inline_pages(&req->rq_rcv_buf, (hdr.replen - 2) << 2, 2998 args->pdev->pages, args->pdev->pgbase, 2999 args->pdev->pglen); 3000 3001 encode_nops(&hdr); 3002 } 3003 3004 /* 3005 * Encode LAYOUTGET request 3006 */ 3007 static void nfs4_xdr_enc_layoutget(struct rpc_rqst *req, 3008 struct xdr_stream *xdr, 3009 const void *data) 3010 { 3011 const struct nfs4_layoutget_args *args = data; 3012 struct compound_hdr hdr = { 3013 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 3014 }; 3015 3016 encode_compound_hdr(xdr, req, &hdr); 3017 encode_sequence(xdr, &args->seq_args, &hdr); 3018 encode_putfh(xdr, NFS_FH(args->inode), &hdr); 3019 encode_layoutget(xdr, args, &hdr); 3020 3021 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, 3022 args->layout.pages, 0, args->layout.pglen); 3023 3024 encode_nops(&hdr); 3025 } 3026 3027 /* 3028 * Encode LAYOUTCOMMIT request 3029 */ 3030 static void nfs4_xdr_enc_layoutcommit(struct rpc_rqst *req, 3031 struct xdr_stream *xdr, 3032 const void *priv) 3033 { 3034 const struct nfs4_layoutcommit_args *args = priv; 3035 struct nfs4_layoutcommit_data *data = 3036 container_of(args, struct nfs4_layoutcommit_data, args); 3037 struct compound_hdr hdr = { 3038 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 3039 }; 3040 3041 encode_compound_hdr(xdr, req, &hdr); 3042 encode_sequence(xdr, &args->seq_args, &hdr); 3043 encode_putfh(xdr, NFS_FH(args->inode), &hdr); 3044 encode_layoutcommit(xdr, data->args.inode, args, &hdr); 3045 encode_getfattr(xdr, args->bitmask, &hdr); 3046 encode_nops(&hdr); 3047 } 3048 3049 /* 3050 * Encode LAYOUTRETURN request 3051 */ 3052 static void nfs4_xdr_enc_layoutreturn(struct rpc_rqst *req, 3053 struct xdr_stream *xdr, 3054 const void *data) 3055 { 3056 const struct nfs4_layoutreturn_args *args = data; 3057 struct compound_hdr hdr = { 3058 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 3059 }; 3060 3061 encode_compound_hdr(xdr, req, &hdr); 3062 encode_sequence(xdr, &args->seq_args, &hdr); 3063 encode_putfh(xdr, NFS_FH(args->inode), &hdr); 3064 encode_layoutreturn(xdr, args, &hdr); 3065 encode_nops(&hdr); 3066 } 3067 3068 /* 3069 * Encode SECINFO_NO_NAME request 3070 */ 3071 static void nfs4_xdr_enc_secinfo_no_name(struct rpc_rqst *req, 3072 struct xdr_stream *xdr, 3073 const void *data) 3074 { 3075 const struct nfs41_secinfo_no_name_args *args = data; 3076 struct compound_hdr hdr = { 3077 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 3078 }; 3079 3080 encode_compound_hdr(xdr, req, &hdr); 3081 encode_sequence(xdr, &args->seq_args, &hdr); 3082 encode_putrootfh(xdr, &hdr); 3083 encode_secinfo_no_name(xdr, args, &hdr); 3084 encode_nops(&hdr); 3085 } 3086 3087 /* 3088 * Encode TEST_STATEID request 3089 */ 3090 static void nfs4_xdr_enc_test_stateid(struct rpc_rqst *req, 3091 struct xdr_stream *xdr, 3092 const void *data) 3093 { 3094 const struct nfs41_test_stateid_args *args = data; 3095 struct compound_hdr hdr = { 3096 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 3097 }; 3098 3099 encode_compound_hdr(xdr, req, &hdr); 3100 encode_sequence(xdr, &args->seq_args, &hdr); 3101 encode_test_stateid(xdr, args, &hdr); 3102 encode_nops(&hdr); 3103 } 3104 3105 /* 3106 * Encode FREE_STATEID request 3107 */ 3108 static void nfs4_xdr_enc_free_stateid(struct rpc_rqst *req, 3109 struct xdr_stream *xdr, 3110 const void *data) 3111 { 3112 const struct nfs41_free_stateid_args *args = data; 3113 struct compound_hdr hdr = { 3114 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 3115 }; 3116 3117 encode_compound_hdr(xdr, req, &hdr); 3118 encode_sequence(xdr, &args->seq_args, &hdr); 3119 encode_free_stateid(xdr, args, &hdr); 3120 encode_nops(&hdr); 3121 } 3122 #endif /* CONFIG_NFS_V4_1 */ 3123 3124 static void print_overflow_msg(const char *func, const struct xdr_stream *xdr) 3125 { 3126 dprintk("nfs: %s: prematurely hit end of receive buffer. " 3127 "Remaining buffer length is %tu words.\n", 3128 func, xdr->end - xdr->p); 3129 } 3130 3131 static int decode_opaque_inline(struct xdr_stream *xdr, unsigned int *len, char **string) 3132 { 3133 ssize_t ret = xdr_stream_decode_opaque_inline(xdr, (void **)string, 3134 NFS4_OPAQUE_LIMIT); 3135 if (unlikely(ret < 0)) { 3136 if (ret == -EBADMSG) 3137 print_overflow_msg(__func__, xdr); 3138 return -EIO; 3139 } 3140 *len = ret; 3141 return 0; 3142 } 3143 3144 static int decode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr) 3145 { 3146 __be32 *p; 3147 3148 p = xdr_inline_decode(xdr, 8); 3149 if (unlikely(!p)) 3150 goto out_overflow; 3151 hdr->status = be32_to_cpup(p++); 3152 hdr->taglen = be32_to_cpup(p); 3153 3154 p = xdr_inline_decode(xdr, hdr->taglen + 4); 3155 if (unlikely(!p)) 3156 goto out_overflow; 3157 hdr->tag = (char *)p; 3158 p += XDR_QUADLEN(hdr->taglen); 3159 hdr->nops = be32_to_cpup(p); 3160 if (unlikely(hdr->nops < 1)) 3161 return nfs4_stat_to_errno(hdr->status); 3162 return 0; 3163 out_overflow: 3164 print_overflow_msg(__func__, xdr); 3165 return -EIO; 3166 } 3167 3168 static bool __decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected, 3169 int *nfs_retval) 3170 { 3171 __be32 *p; 3172 uint32_t opnum; 3173 int32_t nfserr; 3174 3175 p = xdr_inline_decode(xdr, 8); 3176 if (unlikely(!p)) 3177 goto out_overflow; 3178 opnum = be32_to_cpup(p++); 3179 if (unlikely(opnum != expected)) 3180 goto out_bad_operation; 3181 nfserr = be32_to_cpup(p); 3182 if (nfserr == NFS_OK) 3183 *nfs_retval = 0; 3184 else 3185 *nfs_retval = nfs4_stat_to_errno(nfserr); 3186 return true; 3187 out_bad_operation: 3188 dprintk("nfs: Server returned operation" 3189 " %d but we issued a request for %d\n", 3190 opnum, expected); 3191 *nfs_retval = -EREMOTEIO; 3192 return false; 3193 out_overflow: 3194 print_overflow_msg(__func__, xdr); 3195 *nfs_retval = -EIO; 3196 return false; 3197 } 3198 3199 static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected) 3200 { 3201 int retval; 3202 3203 __decode_op_hdr(xdr, expected, &retval); 3204 return retval; 3205 } 3206 3207 /* Dummy routine */ 3208 static int decode_ace(struct xdr_stream *xdr, void *ace) 3209 { 3210 __be32 *p; 3211 unsigned int strlen; 3212 char *str; 3213 3214 p = xdr_inline_decode(xdr, 12); 3215 if (likely(p)) 3216 return decode_opaque_inline(xdr, &strlen, &str); 3217 print_overflow_msg(__func__, xdr); 3218 return -EIO; 3219 } 3220 3221 static int decode_attr_bitmap(struct xdr_stream *xdr, uint32_t *bitmap) 3222 { 3223 uint32_t bmlen; 3224 __be32 *p; 3225 3226 p = xdr_inline_decode(xdr, 4); 3227 if (unlikely(!p)) 3228 goto out_overflow; 3229 bmlen = be32_to_cpup(p); 3230 3231 bitmap[0] = bitmap[1] = bitmap[2] = 0; 3232 p = xdr_inline_decode(xdr, (bmlen << 2)); 3233 if (unlikely(!p)) 3234 goto out_overflow; 3235 if (bmlen > 0) { 3236 bitmap[0] = be32_to_cpup(p++); 3237 if (bmlen > 1) { 3238 bitmap[1] = be32_to_cpup(p++); 3239 if (bmlen > 2) 3240 bitmap[2] = be32_to_cpup(p); 3241 } 3242 } 3243 return 0; 3244 out_overflow: 3245 print_overflow_msg(__func__, xdr); 3246 return -EIO; 3247 } 3248 3249 static int decode_attr_length(struct xdr_stream *xdr, uint32_t *attrlen, unsigned int *savep) 3250 { 3251 __be32 *p; 3252 3253 p = xdr_inline_decode(xdr, 4); 3254 if (unlikely(!p)) 3255 goto out_overflow; 3256 *attrlen = be32_to_cpup(p); 3257 *savep = xdr_stream_pos(xdr); 3258 return 0; 3259 out_overflow: 3260 print_overflow_msg(__func__, xdr); 3261 return -EIO; 3262 } 3263 3264 static int decode_attr_supported(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *bitmask) 3265 { 3266 if (likely(bitmap[0] & FATTR4_WORD0_SUPPORTED_ATTRS)) { 3267 int ret; 3268 ret = decode_attr_bitmap(xdr, bitmask); 3269 if (unlikely(ret < 0)) 3270 return ret; 3271 bitmap[0] &= ~FATTR4_WORD0_SUPPORTED_ATTRS; 3272 } else 3273 bitmask[0] = bitmask[1] = bitmask[2] = 0; 3274 dprintk("%s: bitmask=%08x:%08x:%08x\n", __func__, 3275 bitmask[0], bitmask[1], bitmask[2]); 3276 return 0; 3277 } 3278 3279 static int decode_attr_type(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *type) 3280 { 3281 __be32 *p; 3282 int ret = 0; 3283 3284 *type = 0; 3285 if (unlikely(bitmap[0] & (FATTR4_WORD0_TYPE - 1U))) 3286 return -EIO; 3287 if (likely(bitmap[0] & FATTR4_WORD0_TYPE)) { 3288 p = xdr_inline_decode(xdr, 4); 3289 if (unlikely(!p)) 3290 goto out_overflow; 3291 *type = be32_to_cpup(p); 3292 if (*type < NF4REG || *type > NF4NAMEDATTR) { 3293 dprintk("%s: bad type %d\n", __func__, *type); 3294 return -EIO; 3295 } 3296 bitmap[0] &= ~FATTR4_WORD0_TYPE; 3297 ret = NFS_ATTR_FATTR_TYPE; 3298 } 3299 dprintk("%s: type=0%o\n", __func__, nfs_type2fmt[*type]); 3300 return ret; 3301 out_overflow: 3302 print_overflow_msg(__func__, xdr); 3303 return -EIO; 3304 } 3305 3306 static int decode_attr_fh_expire_type(struct xdr_stream *xdr, 3307 uint32_t *bitmap, uint32_t *type) 3308 { 3309 __be32 *p; 3310 3311 *type = 0; 3312 if (unlikely(bitmap[0] & (FATTR4_WORD0_FH_EXPIRE_TYPE - 1U))) 3313 return -EIO; 3314 if (likely(bitmap[0] & FATTR4_WORD0_FH_EXPIRE_TYPE)) { 3315 p = xdr_inline_decode(xdr, 4); 3316 if (unlikely(!p)) 3317 goto out_overflow; 3318 *type = be32_to_cpup(p); 3319 bitmap[0] &= ~FATTR4_WORD0_FH_EXPIRE_TYPE; 3320 } 3321 dprintk("%s: expire type=0x%x\n", __func__, *type); 3322 return 0; 3323 out_overflow: 3324 print_overflow_msg(__func__, xdr); 3325 return -EIO; 3326 } 3327 3328 static int decode_attr_change(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *change) 3329 { 3330 __be32 *p; 3331 int ret = 0; 3332 3333 *change = 0; 3334 if (unlikely(bitmap[0] & (FATTR4_WORD0_CHANGE - 1U))) 3335 return -EIO; 3336 if (likely(bitmap[0] & FATTR4_WORD0_CHANGE)) { 3337 p = xdr_inline_decode(xdr, 8); 3338 if (unlikely(!p)) 3339 goto out_overflow; 3340 xdr_decode_hyper(p, change); 3341 bitmap[0] &= ~FATTR4_WORD0_CHANGE; 3342 ret = NFS_ATTR_FATTR_CHANGE; 3343 } 3344 dprintk("%s: change attribute=%Lu\n", __func__, 3345 (unsigned long long)*change); 3346 return ret; 3347 out_overflow: 3348 print_overflow_msg(__func__, xdr); 3349 return -EIO; 3350 } 3351 3352 static int decode_attr_size(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *size) 3353 { 3354 __be32 *p; 3355 int ret = 0; 3356 3357 *size = 0; 3358 if (unlikely(bitmap[0] & (FATTR4_WORD0_SIZE - 1U))) 3359 return -EIO; 3360 if (likely(bitmap[0] & FATTR4_WORD0_SIZE)) { 3361 p = xdr_inline_decode(xdr, 8); 3362 if (unlikely(!p)) 3363 goto out_overflow; 3364 xdr_decode_hyper(p, size); 3365 bitmap[0] &= ~FATTR4_WORD0_SIZE; 3366 ret = NFS_ATTR_FATTR_SIZE; 3367 } 3368 dprintk("%s: file size=%Lu\n", __func__, (unsigned long long)*size); 3369 return ret; 3370 out_overflow: 3371 print_overflow_msg(__func__, xdr); 3372 return -EIO; 3373 } 3374 3375 static int decode_attr_link_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) 3376 { 3377 __be32 *p; 3378 3379 *res = 0; 3380 if (unlikely(bitmap[0] & (FATTR4_WORD0_LINK_SUPPORT - 1U))) 3381 return -EIO; 3382 if (likely(bitmap[0] & FATTR4_WORD0_LINK_SUPPORT)) { 3383 p = xdr_inline_decode(xdr, 4); 3384 if (unlikely(!p)) 3385 goto out_overflow; 3386 *res = be32_to_cpup(p); 3387 bitmap[0] &= ~FATTR4_WORD0_LINK_SUPPORT; 3388 } 3389 dprintk("%s: link support=%s\n", __func__, *res == 0 ? "false" : "true"); 3390 return 0; 3391 out_overflow: 3392 print_overflow_msg(__func__, xdr); 3393 return -EIO; 3394 } 3395 3396 static int decode_attr_symlink_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) 3397 { 3398 __be32 *p; 3399 3400 *res = 0; 3401 if (unlikely(bitmap[0] & (FATTR4_WORD0_SYMLINK_SUPPORT - 1U))) 3402 return -EIO; 3403 if (likely(bitmap[0] & FATTR4_WORD0_SYMLINK_SUPPORT)) { 3404 p = xdr_inline_decode(xdr, 4); 3405 if (unlikely(!p)) 3406 goto out_overflow; 3407 *res = be32_to_cpup(p); 3408 bitmap[0] &= ~FATTR4_WORD0_SYMLINK_SUPPORT; 3409 } 3410 dprintk("%s: symlink support=%s\n", __func__, *res == 0 ? "false" : "true"); 3411 return 0; 3412 out_overflow: 3413 print_overflow_msg(__func__, xdr); 3414 return -EIO; 3415 } 3416 3417 static int decode_attr_fsid(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fsid *fsid) 3418 { 3419 __be32 *p; 3420 int ret = 0; 3421 3422 fsid->major = 0; 3423 fsid->minor = 0; 3424 if (unlikely(bitmap[0] & (FATTR4_WORD0_FSID - 1U))) 3425 return -EIO; 3426 if (likely(bitmap[0] & FATTR4_WORD0_FSID)) { 3427 p = xdr_inline_decode(xdr, 16); 3428 if (unlikely(!p)) 3429 goto out_overflow; 3430 p = xdr_decode_hyper(p, &fsid->major); 3431 xdr_decode_hyper(p, &fsid->minor); 3432 bitmap[0] &= ~FATTR4_WORD0_FSID; 3433 ret = NFS_ATTR_FATTR_FSID; 3434 } 3435 dprintk("%s: fsid=(0x%Lx/0x%Lx)\n", __func__, 3436 (unsigned long long)fsid->major, 3437 (unsigned long long)fsid->minor); 3438 return ret; 3439 out_overflow: 3440 print_overflow_msg(__func__, xdr); 3441 return -EIO; 3442 } 3443 3444 static int decode_attr_lease_time(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) 3445 { 3446 __be32 *p; 3447 3448 *res = 60; 3449 if (unlikely(bitmap[0] & (FATTR4_WORD0_LEASE_TIME - 1U))) 3450 return -EIO; 3451 if (likely(bitmap[0] & FATTR4_WORD0_LEASE_TIME)) { 3452 p = xdr_inline_decode(xdr, 4); 3453 if (unlikely(!p)) 3454 goto out_overflow; 3455 *res = be32_to_cpup(p); 3456 bitmap[0] &= ~FATTR4_WORD0_LEASE_TIME; 3457 } 3458 dprintk("%s: file size=%u\n", __func__, (unsigned int)*res); 3459 return 0; 3460 out_overflow: 3461 print_overflow_msg(__func__, xdr); 3462 return -EIO; 3463 } 3464 3465 static int decode_attr_error(struct xdr_stream *xdr, uint32_t *bitmap, int32_t *res) 3466 { 3467 __be32 *p; 3468 3469 if (unlikely(bitmap[0] & (FATTR4_WORD0_RDATTR_ERROR - 1U))) 3470 return -EIO; 3471 if (likely(bitmap[0] & FATTR4_WORD0_RDATTR_ERROR)) { 3472 p = xdr_inline_decode(xdr, 4); 3473 if (unlikely(!p)) 3474 goto out_overflow; 3475 bitmap[0] &= ~FATTR4_WORD0_RDATTR_ERROR; 3476 *res = -be32_to_cpup(p); 3477 } 3478 return 0; 3479 out_overflow: 3480 print_overflow_msg(__func__, xdr); 3481 return -EIO; 3482 } 3483 3484 static int decode_attr_exclcreat_supported(struct xdr_stream *xdr, 3485 uint32_t *bitmap, uint32_t *bitmask) 3486 { 3487 if (likely(bitmap[2] & FATTR4_WORD2_SUPPATTR_EXCLCREAT)) { 3488 int ret; 3489 ret = decode_attr_bitmap(xdr, bitmask); 3490 if (unlikely(ret < 0)) 3491 return ret; 3492 bitmap[2] &= ~FATTR4_WORD2_SUPPATTR_EXCLCREAT; 3493 } else 3494 bitmask[0] = bitmask[1] = bitmask[2] = 0; 3495 dprintk("%s: bitmask=%08x:%08x:%08x\n", __func__, 3496 bitmask[0], bitmask[1], bitmask[2]); 3497 return 0; 3498 } 3499 3500 static int decode_attr_filehandle(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fh *fh) 3501 { 3502 __be32 *p; 3503 int len; 3504 3505 if (fh != NULL) 3506 memset(fh, 0, sizeof(*fh)); 3507 3508 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEHANDLE - 1U))) 3509 return -EIO; 3510 if (likely(bitmap[0] & FATTR4_WORD0_FILEHANDLE)) { 3511 p = xdr_inline_decode(xdr, 4); 3512 if (unlikely(!p)) 3513 goto out_overflow; 3514 len = be32_to_cpup(p); 3515 if (len > NFS4_FHSIZE) 3516 return -EIO; 3517 p = xdr_inline_decode(xdr, len); 3518 if (unlikely(!p)) 3519 goto out_overflow; 3520 if (fh != NULL) { 3521 memcpy(fh->data, p, len); 3522 fh->size = len; 3523 } 3524 bitmap[0] &= ~FATTR4_WORD0_FILEHANDLE; 3525 } 3526 return 0; 3527 out_overflow: 3528 print_overflow_msg(__func__, xdr); 3529 return -EIO; 3530 } 3531 3532 static int decode_attr_aclsupport(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) 3533 { 3534 __be32 *p; 3535 3536 *res = 0; 3537 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACLSUPPORT - 1U))) 3538 return -EIO; 3539 if (likely(bitmap[0] & FATTR4_WORD0_ACLSUPPORT)) { 3540 p = xdr_inline_decode(xdr, 4); 3541 if (unlikely(!p)) 3542 goto out_overflow; 3543 *res = be32_to_cpup(p); 3544 bitmap[0] &= ~FATTR4_WORD0_ACLSUPPORT; 3545 } 3546 dprintk("%s: ACLs supported=%u\n", __func__, (unsigned int)*res); 3547 return 0; 3548 out_overflow: 3549 print_overflow_msg(__func__, xdr); 3550 return -EIO; 3551 } 3552 3553 static int decode_attr_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid) 3554 { 3555 __be32 *p; 3556 int ret = 0; 3557 3558 *fileid = 0; 3559 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEID - 1U))) 3560 return -EIO; 3561 if (likely(bitmap[0] & FATTR4_WORD0_FILEID)) { 3562 p = xdr_inline_decode(xdr, 8); 3563 if (unlikely(!p)) 3564 goto out_overflow; 3565 xdr_decode_hyper(p, fileid); 3566 bitmap[0] &= ~FATTR4_WORD0_FILEID; 3567 ret = NFS_ATTR_FATTR_FILEID; 3568 } 3569 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid); 3570 return ret; 3571 out_overflow: 3572 print_overflow_msg(__func__, xdr); 3573 return -EIO; 3574 } 3575 3576 static int decode_attr_mounted_on_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid) 3577 { 3578 __be32 *p; 3579 int ret = 0; 3580 3581 *fileid = 0; 3582 if (unlikely(bitmap[1] & (FATTR4_WORD1_MOUNTED_ON_FILEID - 1U))) 3583 return -EIO; 3584 if (likely(bitmap[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)) { 3585 p = xdr_inline_decode(xdr, 8); 3586 if (unlikely(!p)) 3587 goto out_overflow; 3588 xdr_decode_hyper(p, fileid); 3589 bitmap[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID; 3590 ret = NFS_ATTR_FATTR_MOUNTED_ON_FILEID; 3591 } 3592 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid); 3593 return ret; 3594 out_overflow: 3595 print_overflow_msg(__func__, xdr); 3596 return -EIO; 3597 } 3598 3599 static int decode_attr_files_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 3600 { 3601 __be32 *p; 3602 int status = 0; 3603 3604 *res = 0; 3605 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_AVAIL - 1U))) 3606 return -EIO; 3607 if (likely(bitmap[0] & FATTR4_WORD0_FILES_AVAIL)) { 3608 p = xdr_inline_decode(xdr, 8); 3609 if (unlikely(!p)) 3610 goto out_overflow; 3611 xdr_decode_hyper(p, res); 3612 bitmap[0] &= ~FATTR4_WORD0_FILES_AVAIL; 3613 } 3614 dprintk("%s: files avail=%Lu\n", __func__, (unsigned long long)*res); 3615 return status; 3616 out_overflow: 3617 print_overflow_msg(__func__, xdr); 3618 return -EIO; 3619 } 3620 3621 static int decode_attr_files_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 3622 { 3623 __be32 *p; 3624 int status = 0; 3625 3626 *res = 0; 3627 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_FREE - 1U))) 3628 return -EIO; 3629 if (likely(bitmap[0] & FATTR4_WORD0_FILES_FREE)) { 3630 p = xdr_inline_decode(xdr, 8); 3631 if (unlikely(!p)) 3632 goto out_overflow; 3633 xdr_decode_hyper(p, res); 3634 bitmap[0] &= ~FATTR4_WORD0_FILES_FREE; 3635 } 3636 dprintk("%s: files free=%Lu\n", __func__, (unsigned long long)*res); 3637 return status; 3638 out_overflow: 3639 print_overflow_msg(__func__, xdr); 3640 return -EIO; 3641 } 3642 3643 static int decode_attr_files_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 3644 { 3645 __be32 *p; 3646 int status = 0; 3647 3648 *res = 0; 3649 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_TOTAL - 1U))) 3650 return -EIO; 3651 if (likely(bitmap[0] & FATTR4_WORD0_FILES_TOTAL)) { 3652 p = xdr_inline_decode(xdr, 8); 3653 if (unlikely(!p)) 3654 goto out_overflow; 3655 xdr_decode_hyper(p, res); 3656 bitmap[0] &= ~FATTR4_WORD0_FILES_TOTAL; 3657 } 3658 dprintk("%s: files total=%Lu\n", __func__, (unsigned long long)*res); 3659 return status; 3660 out_overflow: 3661 print_overflow_msg(__func__, xdr); 3662 return -EIO; 3663 } 3664 3665 static int decode_pathname(struct xdr_stream *xdr, struct nfs4_pathname *path) 3666 { 3667 u32 n; 3668 __be32 *p; 3669 int status = 0; 3670 3671 p = xdr_inline_decode(xdr, 4); 3672 if (unlikely(!p)) 3673 goto out_overflow; 3674 n = be32_to_cpup(p); 3675 if (n == 0) 3676 goto root_path; 3677 dprintk("pathname4: "); 3678 if (n > NFS4_PATHNAME_MAXCOMPONENTS) { 3679 dprintk("cannot parse %d components in path\n", n); 3680 goto out_eio; 3681 } 3682 for (path->ncomponents = 0; path->ncomponents < n; path->ncomponents++) { 3683 struct nfs4_string *component = &path->components[path->ncomponents]; 3684 status = decode_opaque_inline(xdr, &component->len, &component->data); 3685 if (unlikely(status != 0)) 3686 goto out_eio; 3687 ifdebug (XDR) 3688 pr_cont("%s%.*s ", 3689 (path->ncomponents != n ? "/ " : ""), 3690 component->len, component->data); 3691 } 3692 out: 3693 return status; 3694 root_path: 3695 /* a root pathname is sent as a zero component4 */ 3696 path->ncomponents = 1; 3697 path->components[0].len=0; 3698 path->components[0].data=NULL; 3699 dprintk("pathname4: /\n"); 3700 goto out; 3701 out_eio: 3702 dprintk(" status %d", status); 3703 status = -EIO; 3704 goto out; 3705 out_overflow: 3706 print_overflow_msg(__func__, xdr); 3707 return -EIO; 3708 } 3709 3710 static int decode_attr_fs_locations(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_fs_locations *res) 3711 { 3712 int n; 3713 __be32 *p; 3714 int status = -EIO; 3715 3716 if (unlikely(bitmap[0] & (FATTR4_WORD0_FS_LOCATIONS -1U))) 3717 goto out; 3718 status = 0; 3719 if (unlikely(!(bitmap[0] & FATTR4_WORD0_FS_LOCATIONS))) 3720 goto out; 3721 bitmap[0] &= ~FATTR4_WORD0_FS_LOCATIONS; 3722 status = -EIO; 3723 /* Ignore borken servers that return unrequested attrs */ 3724 if (unlikely(res == NULL)) 3725 goto out; 3726 dprintk("%s: fsroot:\n", __func__); 3727 status = decode_pathname(xdr, &res->fs_path); 3728 if (unlikely(status != 0)) 3729 goto out; 3730 p = xdr_inline_decode(xdr, 4); 3731 if (unlikely(!p)) 3732 goto out_overflow; 3733 n = be32_to_cpup(p); 3734 if (n <= 0) 3735 goto out_eio; 3736 for (res->nlocations = 0; res->nlocations < n; res->nlocations++) { 3737 u32 m; 3738 struct nfs4_fs_location *loc; 3739 3740 if (res->nlocations == NFS4_FS_LOCATIONS_MAXENTRIES) 3741 break; 3742 loc = &res->locations[res->nlocations]; 3743 p = xdr_inline_decode(xdr, 4); 3744 if (unlikely(!p)) 3745 goto out_overflow; 3746 m = be32_to_cpup(p); 3747 3748 dprintk("%s: servers:\n", __func__); 3749 for (loc->nservers = 0; loc->nservers < m; loc->nservers++) { 3750 struct nfs4_string *server; 3751 3752 if (loc->nservers == NFS4_FS_LOCATION_MAXSERVERS) { 3753 unsigned int i; 3754 dprintk("%s: using first %u of %u servers " 3755 "returned for location %u\n", 3756 __func__, 3757 NFS4_FS_LOCATION_MAXSERVERS, 3758 m, res->nlocations); 3759 for (i = loc->nservers; i < m; i++) { 3760 unsigned int len; 3761 char *data; 3762 status = decode_opaque_inline(xdr, &len, &data); 3763 if (unlikely(status != 0)) 3764 goto out_eio; 3765 } 3766 break; 3767 } 3768 server = &loc->servers[loc->nservers]; 3769 status = decode_opaque_inline(xdr, &server->len, &server->data); 3770 if (unlikely(status != 0)) 3771 goto out_eio; 3772 dprintk("%s ", server->data); 3773 } 3774 status = decode_pathname(xdr, &loc->rootpath); 3775 if (unlikely(status != 0)) 3776 goto out_eio; 3777 } 3778 if (res->nlocations != 0) 3779 status = NFS_ATTR_FATTR_V4_LOCATIONS; 3780 out: 3781 dprintk("%s: fs_locations done, error = %d\n", __func__, status); 3782 return status; 3783 out_overflow: 3784 print_overflow_msg(__func__, xdr); 3785 out_eio: 3786 status = -EIO; 3787 goto out; 3788 } 3789 3790 static int decode_attr_maxfilesize(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 3791 { 3792 __be32 *p; 3793 int status = 0; 3794 3795 *res = 0; 3796 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXFILESIZE - 1U))) 3797 return -EIO; 3798 if (likely(bitmap[0] & FATTR4_WORD0_MAXFILESIZE)) { 3799 p = xdr_inline_decode(xdr, 8); 3800 if (unlikely(!p)) 3801 goto out_overflow; 3802 xdr_decode_hyper(p, res); 3803 bitmap[0] &= ~FATTR4_WORD0_MAXFILESIZE; 3804 } 3805 dprintk("%s: maxfilesize=%Lu\n", __func__, (unsigned long long)*res); 3806 return status; 3807 out_overflow: 3808 print_overflow_msg(__func__, xdr); 3809 return -EIO; 3810 } 3811 3812 static int decode_attr_maxlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxlink) 3813 { 3814 __be32 *p; 3815 int status = 0; 3816 3817 *maxlink = 1; 3818 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXLINK - 1U))) 3819 return -EIO; 3820 if (likely(bitmap[0] & FATTR4_WORD0_MAXLINK)) { 3821 p = xdr_inline_decode(xdr, 4); 3822 if (unlikely(!p)) 3823 goto out_overflow; 3824 *maxlink = be32_to_cpup(p); 3825 bitmap[0] &= ~FATTR4_WORD0_MAXLINK; 3826 } 3827 dprintk("%s: maxlink=%u\n", __func__, *maxlink); 3828 return status; 3829 out_overflow: 3830 print_overflow_msg(__func__, xdr); 3831 return -EIO; 3832 } 3833 3834 static int decode_attr_maxname(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxname) 3835 { 3836 __be32 *p; 3837 int status = 0; 3838 3839 *maxname = 1024; 3840 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXNAME - 1U))) 3841 return -EIO; 3842 if (likely(bitmap[0] & FATTR4_WORD0_MAXNAME)) { 3843 p = xdr_inline_decode(xdr, 4); 3844 if (unlikely(!p)) 3845 goto out_overflow; 3846 *maxname = be32_to_cpup(p); 3847 bitmap[0] &= ~FATTR4_WORD0_MAXNAME; 3848 } 3849 dprintk("%s: maxname=%u\n", __func__, *maxname); 3850 return status; 3851 out_overflow: 3852 print_overflow_msg(__func__, xdr); 3853 return -EIO; 3854 } 3855 3856 static int decode_attr_maxread(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) 3857 { 3858 __be32 *p; 3859 int status = 0; 3860 3861 *res = 1024; 3862 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXREAD - 1U))) 3863 return -EIO; 3864 if (likely(bitmap[0] & FATTR4_WORD0_MAXREAD)) { 3865 uint64_t maxread; 3866 p = xdr_inline_decode(xdr, 8); 3867 if (unlikely(!p)) 3868 goto out_overflow; 3869 xdr_decode_hyper(p, &maxread); 3870 if (maxread > 0x7FFFFFFF) 3871 maxread = 0x7FFFFFFF; 3872 *res = (uint32_t)maxread; 3873 bitmap[0] &= ~FATTR4_WORD0_MAXREAD; 3874 } 3875 dprintk("%s: maxread=%lu\n", __func__, (unsigned long)*res); 3876 return status; 3877 out_overflow: 3878 print_overflow_msg(__func__, xdr); 3879 return -EIO; 3880 } 3881 3882 static int decode_attr_maxwrite(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) 3883 { 3884 __be32 *p; 3885 int status = 0; 3886 3887 *res = 1024; 3888 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXWRITE - 1U))) 3889 return -EIO; 3890 if (likely(bitmap[0] & FATTR4_WORD0_MAXWRITE)) { 3891 uint64_t maxwrite; 3892 p = xdr_inline_decode(xdr, 8); 3893 if (unlikely(!p)) 3894 goto out_overflow; 3895 xdr_decode_hyper(p, &maxwrite); 3896 if (maxwrite > 0x7FFFFFFF) 3897 maxwrite = 0x7FFFFFFF; 3898 *res = (uint32_t)maxwrite; 3899 bitmap[0] &= ~FATTR4_WORD0_MAXWRITE; 3900 } 3901 dprintk("%s: maxwrite=%lu\n", __func__, (unsigned long)*res); 3902 return status; 3903 out_overflow: 3904 print_overflow_msg(__func__, xdr); 3905 return -EIO; 3906 } 3907 3908 static int decode_attr_mode(struct xdr_stream *xdr, uint32_t *bitmap, umode_t *mode) 3909 { 3910 uint32_t tmp; 3911 __be32 *p; 3912 int ret = 0; 3913 3914 *mode = 0; 3915 if (unlikely(bitmap[1] & (FATTR4_WORD1_MODE - 1U))) 3916 return -EIO; 3917 if (likely(bitmap[1] & FATTR4_WORD1_MODE)) { 3918 p = xdr_inline_decode(xdr, 4); 3919 if (unlikely(!p)) 3920 goto out_overflow; 3921 tmp = be32_to_cpup(p); 3922 *mode = tmp & ~S_IFMT; 3923 bitmap[1] &= ~FATTR4_WORD1_MODE; 3924 ret = NFS_ATTR_FATTR_MODE; 3925 } 3926 dprintk("%s: file mode=0%o\n", __func__, (unsigned int)*mode); 3927 return ret; 3928 out_overflow: 3929 print_overflow_msg(__func__, xdr); 3930 return -EIO; 3931 } 3932 3933 static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *nlink) 3934 { 3935 __be32 *p; 3936 int ret = 0; 3937 3938 *nlink = 1; 3939 if (unlikely(bitmap[1] & (FATTR4_WORD1_NUMLINKS - 1U))) 3940 return -EIO; 3941 if (likely(bitmap[1] & FATTR4_WORD1_NUMLINKS)) { 3942 p = xdr_inline_decode(xdr, 4); 3943 if (unlikely(!p)) 3944 goto out_overflow; 3945 *nlink = be32_to_cpup(p); 3946 bitmap[1] &= ~FATTR4_WORD1_NUMLINKS; 3947 ret = NFS_ATTR_FATTR_NLINK; 3948 } 3949 dprintk("%s: nlink=%u\n", __func__, (unsigned int)*nlink); 3950 return ret; 3951 out_overflow: 3952 print_overflow_msg(__func__, xdr); 3953 return -EIO; 3954 } 3955 3956 static ssize_t decode_nfs4_string(struct xdr_stream *xdr, 3957 struct nfs4_string *name, gfp_t gfp_flags) 3958 { 3959 ssize_t ret; 3960 3961 ret = xdr_stream_decode_string_dup(xdr, &name->data, 3962 XDR_MAX_NETOBJ, gfp_flags); 3963 name->len = 0; 3964 if (ret > 0) 3965 name->len = ret; 3966 return ret; 3967 } 3968 3969 static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap, 3970 const struct nfs_server *server, kuid_t *uid, 3971 struct nfs4_string *owner_name) 3972 { 3973 ssize_t len; 3974 char *p; 3975 3976 *uid = make_kuid(&init_user_ns, -2); 3977 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER - 1U))) 3978 return -EIO; 3979 if (!(bitmap[1] & FATTR4_WORD1_OWNER)) 3980 return 0; 3981 bitmap[1] &= ~FATTR4_WORD1_OWNER; 3982 3983 if (owner_name != NULL) { 3984 len = decode_nfs4_string(xdr, owner_name, GFP_NOWAIT); 3985 if (len <= 0) 3986 goto out; 3987 dprintk("%s: name=%s\n", __func__, owner_name->data); 3988 return NFS_ATTR_FATTR_OWNER_NAME; 3989 } else { 3990 len = xdr_stream_decode_opaque_inline(xdr, (void **)&p, 3991 XDR_MAX_NETOBJ); 3992 if (len <= 0 || nfs_map_name_to_uid(server, p, len, uid) != 0) 3993 goto out; 3994 dprintk("%s: uid=%d\n", __func__, (int)from_kuid(&init_user_ns, *uid)); 3995 return NFS_ATTR_FATTR_OWNER; 3996 } 3997 out: 3998 if (len != -EBADMSG) 3999 return 0; 4000 print_overflow_msg(__func__, xdr); 4001 return -EIO; 4002 } 4003 4004 static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap, 4005 const struct nfs_server *server, kgid_t *gid, 4006 struct nfs4_string *group_name) 4007 { 4008 ssize_t len; 4009 char *p; 4010 4011 *gid = make_kgid(&init_user_ns, -2); 4012 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER_GROUP - 1U))) 4013 return -EIO; 4014 if (!(bitmap[1] & FATTR4_WORD1_OWNER_GROUP)) 4015 return 0; 4016 bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP; 4017 4018 if (group_name != NULL) { 4019 len = decode_nfs4_string(xdr, group_name, GFP_NOWAIT); 4020 if (len <= 0) 4021 goto out; 4022 dprintk("%s: name=%s\n", __func__, group_name->data); 4023 return NFS_ATTR_FATTR_GROUP_NAME; 4024 } else { 4025 len = xdr_stream_decode_opaque_inline(xdr, (void **)&p, 4026 XDR_MAX_NETOBJ); 4027 if (len <= 0 || nfs_map_group_to_gid(server, p, len, gid) != 0) 4028 goto out; 4029 dprintk("%s: gid=%d\n", __func__, (int)from_kgid(&init_user_ns, *gid)); 4030 return NFS_ATTR_FATTR_GROUP; 4031 } 4032 out: 4033 if (len != -EBADMSG) 4034 return 0; 4035 print_overflow_msg(__func__, xdr); 4036 return -EIO; 4037 } 4038 4039 static int decode_attr_rdev(struct xdr_stream *xdr, uint32_t *bitmap, dev_t *rdev) 4040 { 4041 uint32_t major = 0, minor = 0; 4042 __be32 *p; 4043 int ret = 0; 4044 4045 *rdev = MKDEV(0,0); 4046 if (unlikely(bitmap[1] & (FATTR4_WORD1_RAWDEV - 1U))) 4047 return -EIO; 4048 if (likely(bitmap[1] & FATTR4_WORD1_RAWDEV)) { 4049 dev_t tmp; 4050 4051 p = xdr_inline_decode(xdr, 8); 4052 if (unlikely(!p)) 4053 goto out_overflow; 4054 major = be32_to_cpup(p++); 4055 minor = be32_to_cpup(p); 4056 tmp = MKDEV(major, minor); 4057 if (MAJOR(tmp) == major && MINOR(tmp) == minor) 4058 *rdev = tmp; 4059 bitmap[1] &= ~ FATTR4_WORD1_RAWDEV; 4060 ret = NFS_ATTR_FATTR_RDEV; 4061 } 4062 dprintk("%s: rdev=(0x%x:0x%x)\n", __func__, major, minor); 4063 return ret; 4064 out_overflow: 4065 print_overflow_msg(__func__, xdr); 4066 return -EIO; 4067 } 4068 4069 static int decode_attr_space_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 4070 { 4071 __be32 *p; 4072 int status = 0; 4073 4074 *res = 0; 4075 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_AVAIL - 1U))) 4076 return -EIO; 4077 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_AVAIL)) { 4078 p = xdr_inline_decode(xdr, 8); 4079 if (unlikely(!p)) 4080 goto out_overflow; 4081 xdr_decode_hyper(p, res); 4082 bitmap[1] &= ~FATTR4_WORD1_SPACE_AVAIL; 4083 } 4084 dprintk("%s: space avail=%Lu\n", __func__, (unsigned long long)*res); 4085 return status; 4086 out_overflow: 4087 print_overflow_msg(__func__, xdr); 4088 return -EIO; 4089 } 4090 4091 static int decode_attr_space_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 4092 { 4093 __be32 *p; 4094 int status = 0; 4095 4096 *res = 0; 4097 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_FREE - 1U))) 4098 return -EIO; 4099 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_FREE)) { 4100 p = xdr_inline_decode(xdr, 8); 4101 if (unlikely(!p)) 4102 goto out_overflow; 4103 xdr_decode_hyper(p, res); 4104 bitmap[1] &= ~FATTR4_WORD1_SPACE_FREE; 4105 } 4106 dprintk("%s: space free=%Lu\n", __func__, (unsigned long long)*res); 4107 return status; 4108 out_overflow: 4109 print_overflow_msg(__func__, xdr); 4110 return -EIO; 4111 } 4112 4113 static int decode_attr_space_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 4114 { 4115 __be32 *p; 4116 int status = 0; 4117 4118 *res = 0; 4119 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_TOTAL - 1U))) 4120 return -EIO; 4121 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_TOTAL)) { 4122 p = xdr_inline_decode(xdr, 8); 4123 if (unlikely(!p)) 4124 goto out_overflow; 4125 xdr_decode_hyper(p, res); 4126 bitmap[1] &= ~FATTR4_WORD1_SPACE_TOTAL; 4127 } 4128 dprintk("%s: space total=%Lu\n", __func__, (unsigned long long)*res); 4129 return status; 4130 out_overflow: 4131 print_overflow_msg(__func__, xdr); 4132 return -EIO; 4133 } 4134 4135 static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *used) 4136 { 4137 __be32 *p; 4138 int ret = 0; 4139 4140 *used = 0; 4141 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_USED - 1U))) 4142 return -EIO; 4143 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_USED)) { 4144 p = xdr_inline_decode(xdr, 8); 4145 if (unlikely(!p)) 4146 goto out_overflow; 4147 xdr_decode_hyper(p, used); 4148 bitmap[1] &= ~FATTR4_WORD1_SPACE_USED; 4149 ret = NFS_ATTR_FATTR_SPACE_USED; 4150 } 4151 dprintk("%s: space used=%Lu\n", __func__, 4152 (unsigned long long)*used); 4153 return ret; 4154 out_overflow: 4155 print_overflow_msg(__func__, xdr); 4156 return -EIO; 4157 } 4158 4159 static int decode_attr_time(struct xdr_stream *xdr, struct timespec *time) 4160 { 4161 __be32 *p; 4162 uint64_t sec; 4163 uint32_t nsec; 4164 4165 p = xdr_inline_decode(xdr, 12); 4166 if (unlikely(!p)) 4167 goto out_overflow; 4168 p = xdr_decode_hyper(p, &sec); 4169 nsec = be32_to_cpup(p); 4170 time->tv_sec = (time_t)sec; 4171 time->tv_nsec = (long)nsec; 4172 return 0; 4173 out_overflow: 4174 print_overflow_msg(__func__, xdr); 4175 return -EIO; 4176 } 4177 4178 static int decode_attr_time_access(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time) 4179 { 4180 int status = 0; 4181 4182 time->tv_sec = 0; 4183 time->tv_nsec = 0; 4184 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_ACCESS - 1U))) 4185 return -EIO; 4186 if (likely(bitmap[1] & FATTR4_WORD1_TIME_ACCESS)) { 4187 status = decode_attr_time(xdr, time); 4188 if (status == 0) 4189 status = NFS_ATTR_FATTR_ATIME; 4190 bitmap[1] &= ~FATTR4_WORD1_TIME_ACCESS; 4191 } 4192 dprintk("%s: atime=%ld\n", __func__, (long)time->tv_sec); 4193 return status; 4194 } 4195 4196 static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time) 4197 { 4198 int status = 0; 4199 4200 time->tv_sec = 0; 4201 time->tv_nsec = 0; 4202 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_METADATA - 1U))) 4203 return -EIO; 4204 if (likely(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) { 4205 status = decode_attr_time(xdr, time); 4206 if (status == 0) 4207 status = NFS_ATTR_FATTR_CTIME; 4208 bitmap[1] &= ~FATTR4_WORD1_TIME_METADATA; 4209 } 4210 dprintk("%s: ctime=%ld\n", __func__, (long)time->tv_sec); 4211 return status; 4212 } 4213 4214 static int decode_attr_time_delta(struct xdr_stream *xdr, uint32_t *bitmap, 4215 struct timespec *time) 4216 { 4217 int status = 0; 4218 4219 time->tv_sec = 0; 4220 time->tv_nsec = 0; 4221 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_DELTA - 1U))) 4222 return -EIO; 4223 if (likely(bitmap[1] & FATTR4_WORD1_TIME_DELTA)) { 4224 status = decode_attr_time(xdr, time); 4225 bitmap[1] &= ~FATTR4_WORD1_TIME_DELTA; 4226 } 4227 dprintk("%s: time_delta=%ld %ld\n", __func__, (long)time->tv_sec, 4228 (long)time->tv_nsec); 4229 return status; 4230 } 4231 4232 static int decode_attr_security_label(struct xdr_stream *xdr, uint32_t *bitmap, 4233 struct nfs4_label *label) 4234 { 4235 uint32_t pi = 0; 4236 uint32_t lfs = 0; 4237 __u32 len; 4238 __be32 *p; 4239 int status = 0; 4240 4241 if (unlikely(bitmap[2] & (FATTR4_WORD2_SECURITY_LABEL - 1U))) 4242 return -EIO; 4243 if (likely(bitmap[2] & FATTR4_WORD2_SECURITY_LABEL)) { 4244 p = xdr_inline_decode(xdr, 4); 4245 if (unlikely(!p)) 4246 goto out_overflow; 4247 lfs = be32_to_cpup(p++); 4248 p = xdr_inline_decode(xdr, 4); 4249 if (unlikely(!p)) 4250 goto out_overflow; 4251 pi = be32_to_cpup(p++); 4252 p = xdr_inline_decode(xdr, 4); 4253 if (unlikely(!p)) 4254 goto out_overflow; 4255 len = be32_to_cpup(p++); 4256 p = xdr_inline_decode(xdr, len); 4257 if (unlikely(!p)) 4258 goto out_overflow; 4259 if (len < NFS4_MAXLABELLEN) { 4260 if (label) { 4261 memcpy(label->label, p, len); 4262 label->len = len; 4263 label->pi = pi; 4264 label->lfs = lfs; 4265 status = NFS_ATTR_FATTR_V4_SECURITY_LABEL; 4266 } 4267 bitmap[2] &= ~FATTR4_WORD2_SECURITY_LABEL; 4268 } else 4269 printk(KERN_WARNING "%s: label too long (%u)!\n", 4270 __func__, len); 4271 } 4272 if (label && label->label) 4273 dprintk("%s: label=%s, len=%d, PI=%d, LFS=%d\n", __func__, 4274 (char *)label->label, label->len, label->pi, label->lfs); 4275 return status; 4276 4277 out_overflow: 4278 print_overflow_msg(__func__, xdr); 4279 return -EIO; 4280 } 4281 4282 static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time) 4283 { 4284 int status = 0; 4285 4286 time->tv_sec = 0; 4287 time->tv_nsec = 0; 4288 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_MODIFY - 1U))) 4289 return -EIO; 4290 if (likely(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) { 4291 status = decode_attr_time(xdr, time); 4292 if (status == 0) 4293 status = NFS_ATTR_FATTR_MTIME; 4294 bitmap[1] &= ~FATTR4_WORD1_TIME_MODIFY; 4295 } 4296 dprintk("%s: mtime=%ld\n", __func__, (long)time->tv_sec); 4297 return status; 4298 } 4299 4300 static int verify_attr_len(struct xdr_stream *xdr, unsigned int savep, uint32_t attrlen) 4301 { 4302 unsigned int attrwords = XDR_QUADLEN(attrlen); 4303 unsigned int nwords = (xdr_stream_pos(xdr) - savep) >> 2; 4304 4305 if (unlikely(attrwords != nwords)) { 4306 dprintk("%s: server returned incorrect attribute length: " 4307 "%u %c %u\n", 4308 __func__, 4309 attrwords << 2, 4310 (attrwords < nwords) ? '<' : '>', 4311 nwords << 2); 4312 return -EIO; 4313 } 4314 return 0; 4315 } 4316 4317 static int decode_change_info(struct xdr_stream *xdr, struct nfs4_change_info *cinfo) 4318 { 4319 __be32 *p; 4320 4321 p = xdr_inline_decode(xdr, 20); 4322 if (unlikely(!p)) 4323 goto out_overflow; 4324 cinfo->atomic = be32_to_cpup(p++); 4325 p = xdr_decode_hyper(p, &cinfo->before); 4326 xdr_decode_hyper(p, &cinfo->after); 4327 return 0; 4328 out_overflow: 4329 print_overflow_msg(__func__, xdr); 4330 return -EIO; 4331 } 4332 4333 static int decode_access(struct xdr_stream *xdr, u32 *supported, u32 *access) 4334 { 4335 __be32 *p; 4336 uint32_t supp, acc; 4337 int status; 4338 4339 status = decode_op_hdr(xdr, OP_ACCESS); 4340 if (status) 4341 return status; 4342 p = xdr_inline_decode(xdr, 8); 4343 if (unlikely(!p)) 4344 goto out_overflow; 4345 supp = be32_to_cpup(p++); 4346 acc = be32_to_cpup(p); 4347 *supported = supp; 4348 *access = acc; 4349 return 0; 4350 out_overflow: 4351 print_overflow_msg(__func__, xdr); 4352 return -EIO; 4353 } 4354 4355 static int decode_opaque_fixed(struct xdr_stream *xdr, void *buf, size_t len) 4356 { 4357 ssize_t ret = xdr_stream_decode_opaque_fixed(xdr, buf, len); 4358 if (unlikely(ret < 0)) { 4359 print_overflow_msg(__func__, xdr); 4360 return -EIO; 4361 } 4362 return 0; 4363 } 4364 4365 static int decode_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid) 4366 { 4367 return decode_opaque_fixed(xdr, stateid, NFS4_STATEID_SIZE); 4368 } 4369 4370 static int decode_open_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid) 4371 { 4372 stateid->type = NFS4_OPEN_STATEID_TYPE; 4373 return decode_stateid(xdr, stateid); 4374 } 4375 4376 static int decode_lock_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid) 4377 { 4378 stateid->type = NFS4_LOCK_STATEID_TYPE; 4379 return decode_stateid(xdr, stateid); 4380 } 4381 4382 static int decode_delegation_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid) 4383 { 4384 stateid->type = NFS4_DELEGATION_STATEID_TYPE; 4385 return decode_stateid(xdr, stateid); 4386 } 4387 4388 static int decode_invalid_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid) 4389 { 4390 nfs4_stateid dummy; 4391 4392 nfs4_stateid_copy(stateid, &invalid_stateid); 4393 return decode_stateid(xdr, &dummy); 4394 } 4395 4396 static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res) 4397 { 4398 int status; 4399 4400 status = decode_op_hdr(xdr, OP_CLOSE); 4401 if (status != -EIO) 4402 nfs_increment_open_seqid(status, res->seqid); 4403 if (!status) 4404 status = decode_invalid_stateid(xdr, &res->stateid); 4405 return status; 4406 } 4407 4408 static int decode_verifier(struct xdr_stream *xdr, void *verifier) 4409 { 4410 return decode_opaque_fixed(xdr, verifier, NFS4_VERIFIER_SIZE); 4411 } 4412 4413 static int decode_write_verifier(struct xdr_stream *xdr, struct nfs_write_verifier *verifier) 4414 { 4415 return decode_opaque_fixed(xdr, verifier->data, NFS4_VERIFIER_SIZE); 4416 } 4417 4418 static int decode_commit(struct xdr_stream *xdr, struct nfs_commitres *res) 4419 { 4420 int status; 4421 4422 status = decode_op_hdr(xdr, OP_COMMIT); 4423 if (!status) 4424 status = decode_write_verifier(xdr, &res->verf->verifier); 4425 return status; 4426 } 4427 4428 static int decode_create(struct xdr_stream *xdr, struct nfs4_change_info *cinfo) 4429 { 4430 __be32 *p; 4431 uint32_t bmlen; 4432 int status; 4433 4434 status = decode_op_hdr(xdr, OP_CREATE); 4435 if (status) 4436 return status; 4437 if ((status = decode_change_info(xdr, cinfo))) 4438 return status; 4439 p = xdr_inline_decode(xdr, 4); 4440 if (unlikely(!p)) 4441 goto out_overflow; 4442 bmlen = be32_to_cpup(p); 4443 p = xdr_inline_decode(xdr, bmlen << 2); 4444 if (likely(p)) 4445 return 0; 4446 out_overflow: 4447 print_overflow_msg(__func__, xdr); 4448 return -EIO; 4449 } 4450 4451 static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_res *res) 4452 { 4453 unsigned int savep; 4454 uint32_t attrlen, bitmap[3] = {0}; 4455 int status; 4456 4457 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) 4458 goto xdr_error; 4459 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) 4460 goto xdr_error; 4461 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) 4462 goto xdr_error; 4463 if ((status = decode_attr_supported(xdr, bitmap, res->attr_bitmask)) != 0) 4464 goto xdr_error; 4465 if ((status = decode_attr_fh_expire_type(xdr, bitmap, 4466 &res->fh_expire_type)) != 0) 4467 goto xdr_error; 4468 if ((status = decode_attr_link_support(xdr, bitmap, &res->has_links)) != 0) 4469 goto xdr_error; 4470 if ((status = decode_attr_symlink_support(xdr, bitmap, &res->has_symlinks)) != 0) 4471 goto xdr_error; 4472 if ((status = decode_attr_aclsupport(xdr, bitmap, &res->acl_bitmask)) != 0) 4473 goto xdr_error; 4474 if ((status = decode_attr_exclcreat_supported(xdr, bitmap, 4475 res->exclcreat_bitmask)) != 0) 4476 goto xdr_error; 4477 status = verify_attr_len(xdr, savep, attrlen); 4478 xdr_error: 4479 dprintk("%s: xdr returned %d!\n", __func__, -status); 4480 return status; 4481 } 4482 4483 static int decode_statfs(struct xdr_stream *xdr, struct nfs_fsstat *fsstat) 4484 { 4485 unsigned int savep; 4486 uint32_t attrlen, bitmap[3] = {0}; 4487 int status; 4488 4489 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) 4490 goto xdr_error; 4491 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) 4492 goto xdr_error; 4493 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) 4494 goto xdr_error; 4495 4496 if ((status = decode_attr_files_avail(xdr, bitmap, &fsstat->afiles)) != 0) 4497 goto xdr_error; 4498 if ((status = decode_attr_files_free(xdr, bitmap, &fsstat->ffiles)) != 0) 4499 goto xdr_error; 4500 if ((status = decode_attr_files_total(xdr, bitmap, &fsstat->tfiles)) != 0) 4501 goto xdr_error; 4502 4503 status = -EIO; 4504 if (unlikely(bitmap[0])) 4505 goto xdr_error; 4506 4507 if ((status = decode_attr_space_avail(xdr, bitmap, &fsstat->abytes)) != 0) 4508 goto xdr_error; 4509 if ((status = decode_attr_space_free(xdr, bitmap, &fsstat->fbytes)) != 0) 4510 goto xdr_error; 4511 if ((status = decode_attr_space_total(xdr, bitmap, &fsstat->tbytes)) != 0) 4512 goto xdr_error; 4513 4514 status = verify_attr_len(xdr, savep, attrlen); 4515 xdr_error: 4516 dprintk("%s: xdr returned %d!\n", __func__, -status); 4517 return status; 4518 } 4519 4520 static int decode_pathconf(struct xdr_stream *xdr, struct nfs_pathconf *pathconf) 4521 { 4522 unsigned int savep; 4523 uint32_t attrlen, bitmap[3] = {0}; 4524 int status; 4525 4526 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) 4527 goto xdr_error; 4528 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) 4529 goto xdr_error; 4530 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) 4531 goto xdr_error; 4532 4533 if ((status = decode_attr_maxlink(xdr, bitmap, &pathconf->max_link)) != 0) 4534 goto xdr_error; 4535 if ((status = decode_attr_maxname(xdr, bitmap, &pathconf->max_namelen)) != 0) 4536 goto xdr_error; 4537 4538 status = verify_attr_len(xdr, savep, attrlen); 4539 xdr_error: 4540 dprintk("%s: xdr returned %d!\n", __func__, -status); 4541 return status; 4542 } 4543 4544 static int decode_threshold_hint(struct xdr_stream *xdr, 4545 uint32_t *bitmap, 4546 uint64_t *res, 4547 uint32_t hint_bit) 4548 { 4549 __be32 *p; 4550 4551 *res = 0; 4552 if (likely(bitmap[0] & hint_bit)) { 4553 p = xdr_inline_decode(xdr, 8); 4554 if (unlikely(!p)) 4555 goto out_overflow; 4556 xdr_decode_hyper(p, res); 4557 } 4558 return 0; 4559 out_overflow: 4560 print_overflow_msg(__func__, xdr); 4561 return -EIO; 4562 } 4563 4564 static int decode_first_threshold_item4(struct xdr_stream *xdr, 4565 struct nfs4_threshold *res) 4566 { 4567 __be32 *p; 4568 unsigned int savep; 4569 uint32_t bitmap[3] = {0,}, attrlen; 4570 int status; 4571 4572 /* layout type */ 4573 p = xdr_inline_decode(xdr, 4); 4574 if (unlikely(!p)) { 4575 print_overflow_msg(__func__, xdr); 4576 return -EIO; 4577 } 4578 res->l_type = be32_to_cpup(p); 4579 4580 /* thi_hintset bitmap */ 4581 status = decode_attr_bitmap(xdr, bitmap); 4582 if (status < 0) 4583 goto xdr_error; 4584 4585 /* thi_hintlist length */ 4586 status = decode_attr_length(xdr, &attrlen, &savep); 4587 if (status < 0) 4588 goto xdr_error; 4589 /* thi_hintlist */ 4590 status = decode_threshold_hint(xdr, bitmap, &res->rd_sz, THRESHOLD_RD); 4591 if (status < 0) 4592 goto xdr_error; 4593 status = decode_threshold_hint(xdr, bitmap, &res->wr_sz, THRESHOLD_WR); 4594 if (status < 0) 4595 goto xdr_error; 4596 status = decode_threshold_hint(xdr, bitmap, &res->rd_io_sz, 4597 THRESHOLD_RD_IO); 4598 if (status < 0) 4599 goto xdr_error; 4600 status = decode_threshold_hint(xdr, bitmap, &res->wr_io_sz, 4601 THRESHOLD_WR_IO); 4602 if (status < 0) 4603 goto xdr_error; 4604 4605 status = verify_attr_len(xdr, savep, attrlen); 4606 res->bm = bitmap[0]; 4607 4608 dprintk("%s bm=0x%x rd_sz=%llu wr_sz=%llu rd_io=%llu wr_io=%llu\n", 4609 __func__, res->bm, res->rd_sz, res->wr_sz, res->rd_io_sz, 4610 res->wr_io_sz); 4611 xdr_error: 4612 dprintk("%s ret=%d!\n", __func__, status); 4613 return status; 4614 } 4615 4616 /* 4617 * Thresholds on pNFS direct I/O vrs MDS I/O 4618 */ 4619 static int decode_attr_mdsthreshold(struct xdr_stream *xdr, 4620 uint32_t *bitmap, 4621 struct nfs4_threshold *res) 4622 { 4623 __be32 *p; 4624 int status = 0; 4625 uint32_t num; 4626 4627 if (unlikely(bitmap[2] & (FATTR4_WORD2_MDSTHRESHOLD - 1U))) 4628 return -EIO; 4629 if (bitmap[2] & FATTR4_WORD2_MDSTHRESHOLD) { 4630 /* Did the server return an unrequested attribute? */ 4631 if (unlikely(res == NULL)) 4632 return -EREMOTEIO; 4633 p = xdr_inline_decode(xdr, 4); 4634 if (unlikely(!p)) 4635 goto out_overflow; 4636 num = be32_to_cpup(p); 4637 if (num == 0) 4638 return 0; 4639 if (num > 1) 4640 printk(KERN_INFO "%s: Warning: Multiple pNFS layout " 4641 "drivers per filesystem not supported\n", 4642 __func__); 4643 4644 status = decode_first_threshold_item4(xdr, res); 4645 bitmap[2] &= ~FATTR4_WORD2_MDSTHRESHOLD; 4646 } 4647 return status; 4648 out_overflow: 4649 print_overflow_msg(__func__, xdr); 4650 return -EIO; 4651 } 4652 4653 static int decode_getfattr_attrs(struct xdr_stream *xdr, uint32_t *bitmap, 4654 struct nfs_fattr *fattr, struct nfs_fh *fh, 4655 struct nfs4_fs_locations *fs_loc, struct nfs4_label *label, 4656 const struct nfs_server *server) 4657 { 4658 int status; 4659 umode_t fmode = 0; 4660 uint32_t type; 4661 int32_t err; 4662 4663 status = decode_attr_type(xdr, bitmap, &type); 4664 if (status < 0) 4665 goto xdr_error; 4666 fattr->mode = 0; 4667 if (status != 0) { 4668 fattr->mode |= nfs_type2fmt[type]; 4669 fattr->valid |= status; 4670 } 4671 4672 status = decode_attr_change(xdr, bitmap, &fattr->change_attr); 4673 if (status < 0) 4674 goto xdr_error; 4675 fattr->valid |= status; 4676 4677 status = decode_attr_size(xdr, bitmap, &fattr->size); 4678 if (status < 0) 4679 goto xdr_error; 4680 fattr->valid |= status; 4681 4682 status = decode_attr_fsid(xdr, bitmap, &fattr->fsid); 4683 if (status < 0) 4684 goto xdr_error; 4685 fattr->valid |= status; 4686 4687 err = 0; 4688 status = decode_attr_error(xdr, bitmap, &err); 4689 if (status < 0) 4690 goto xdr_error; 4691 4692 status = decode_attr_filehandle(xdr, bitmap, fh); 4693 if (status < 0) 4694 goto xdr_error; 4695 4696 status = decode_attr_fileid(xdr, bitmap, &fattr->fileid); 4697 if (status < 0) 4698 goto xdr_error; 4699 fattr->valid |= status; 4700 4701 status = decode_attr_fs_locations(xdr, bitmap, fs_loc); 4702 if (status < 0) 4703 goto xdr_error; 4704 fattr->valid |= status; 4705 4706 status = -EIO; 4707 if (unlikely(bitmap[0])) 4708 goto xdr_error; 4709 4710 status = decode_attr_mode(xdr, bitmap, &fmode); 4711 if (status < 0) 4712 goto xdr_error; 4713 if (status != 0) { 4714 fattr->mode |= fmode; 4715 fattr->valid |= status; 4716 } 4717 4718 status = decode_attr_nlink(xdr, bitmap, &fattr->nlink); 4719 if (status < 0) 4720 goto xdr_error; 4721 fattr->valid |= status; 4722 4723 status = decode_attr_owner(xdr, bitmap, server, &fattr->uid, fattr->owner_name); 4724 if (status < 0) 4725 goto xdr_error; 4726 fattr->valid |= status; 4727 4728 status = decode_attr_group(xdr, bitmap, server, &fattr->gid, fattr->group_name); 4729 if (status < 0) 4730 goto xdr_error; 4731 fattr->valid |= status; 4732 4733 status = decode_attr_rdev(xdr, bitmap, &fattr->rdev); 4734 if (status < 0) 4735 goto xdr_error; 4736 fattr->valid |= status; 4737 4738 status = decode_attr_space_used(xdr, bitmap, &fattr->du.nfs3.used); 4739 if (status < 0) 4740 goto xdr_error; 4741 fattr->valid |= status; 4742 4743 status = decode_attr_time_access(xdr, bitmap, &fattr->atime); 4744 if (status < 0) 4745 goto xdr_error; 4746 fattr->valid |= status; 4747 4748 status = decode_attr_time_metadata(xdr, bitmap, &fattr->ctime); 4749 if (status < 0) 4750 goto xdr_error; 4751 fattr->valid |= status; 4752 4753 status = decode_attr_time_modify(xdr, bitmap, &fattr->mtime); 4754 if (status < 0) 4755 goto xdr_error; 4756 fattr->valid |= status; 4757 4758 status = decode_attr_mounted_on_fileid(xdr, bitmap, &fattr->mounted_on_fileid); 4759 if (status < 0) 4760 goto xdr_error; 4761 fattr->valid |= status; 4762 4763 status = -EIO; 4764 if (unlikely(bitmap[1])) 4765 goto xdr_error; 4766 4767 status = decode_attr_mdsthreshold(xdr, bitmap, fattr->mdsthreshold); 4768 if (status < 0) 4769 goto xdr_error; 4770 4771 if (label) { 4772 status = decode_attr_security_label(xdr, bitmap, label); 4773 if (status < 0) 4774 goto xdr_error; 4775 fattr->valid |= status; 4776 } 4777 4778 xdr_error: 4779 dprintk("%s: xdr returned %d\n", __func__, -status); 4780 return status; 4781 } 4782 4783 static int decode_getfattr_generic(struct xdr_stream *xdr, struct nfs_fattr *fattr, 4784 struct nfs_fh *fh, struct nfs4_fs_locations *fs_loc, 4785 struct nfs4_label *label, const struct nfs_server *server) 4786 { 4787 unsigned int savep; 4788 uint32_t attrlen, 4789 bitmap[3] = {0}; 4790 int status; 4791 4792 status = decode_op_hdr(xdr, OP_GETATTR); 4793 if (status < 0) 4794 goto xdr_error; 4795 4796 status = decode_attr_bitmap(xdr, bitmap); 4797 if (status < 0) 4798 goto xdr_error; 4799 4800 status = decode_attr_length(xdr, &attrlen, &savep); 4801 if (status < 0) 4802 goto xdr_error; 4803 4804 status = decode_getfattr_attrs(xdr, bitmap, fattr, fh, fs_loc, 4805 label, server); 4806 if (status < 0) 4807 goto xdr_error; 4808 4809 status = verify_attr_len(xdr, savep, attrlen); 4810 xdr_error: 4811 dprintk("%s: xdr returned %d\n", __func__, -status); 4812 return status; 4813 } 4814 4815 static int decode_getfattr_label(struct xdr_stream *xdr, struct nfs_fattr *fattr, 4816 struct nfs4_label *label, const struct nfs_server *server) 4817 { 4818 return decode_getfattr_generic(xdr, fattr, NULL, NULL, label, server); 4819 } 4820 4821 static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr, 4822 const struct nfs_server *server) 4823 { 4824 return decode_getfattr_generic(xdr, fattr, NULL, NULL, NULL, server); 4825 } 4826 4827 /* 4828 * Decode potentially multiple layout types. 4829 */ 4830 static int decode_pnfs_layout_types(struct xdr_stream *xdr, 4831 struct nfs_fsinfo *fsinfo) 4832 { 4833 __be32 *p; 4834 uint32_t i; 4835 4836 p = xdr_inline_decode(xdr, 4); 4837 if (unlikely(!p)) 4838 goto out_overflow; 4839 fsinfo->nlayouttypes = be32_to_cpup(p); 4840 4841 /* pNFS is not supported by the underlying file system */ 4842 if (fsinfo->nlayouttypes == 0) 4843 return 0; 4844 4845 /* Decode and set first layout type, move xdr->p past unused types */ 4846 p = xdr_inline_decode(xdr, fsinfo->nlayouttypes * 4); 4847 if (unlikely(!p)) 4848 goto out_overflow; 4849 4850 /* If we get too many, then just cap it at the max */ 4851 if (fsinfo->nlayouttypes > NFS_MAX_LAYOUT_TYPES) { 4852 printk(KERN_INFO "NFS: %s: Warning: Too many (%u) pNFS layout types\n", 4853 __func__, fsinfo->nlayouttypes); 4854 fsinfo->nlayouttypes = NFS_MAX_LAYOUT_TYPES; 4855 } 4856 4857 for(i = 0; i < fsinfo->nlayouttypes; ++i) 4858 fsinfo->layouttype[i] = be32_to_cpup(p++); 4859 return 0; 4860 out_overflow: 4861 print_overflow_msg(__func__, xdr); 4862 return -EIO; 4863 } 4864 4865 /* 4866 * The type of file system exported. 4867 * Note we must ensure that layouttype is set in any non-error case. 4868 */ 4869 static int decode_attr_pnfstype(struct xdr_stream *xdr, uint32_t *bitmap, 4870 struct nfs_fsinfo *fsinfo) 4871 { 4872 int status = 0; 4873 4874 dprintk("%s: bitmap is %x\n", __func__, bitmap[1]); 4875 if (unlikely(bitmap[1] & (FATTR4_WORD1_FS_LAYOUT_TYPES - 1U))) 4876 return -EIO; 4877 if (bitmap[1] & FATTR4_WORD1_FS_LAYOUT_TYPES) { 4878 status = decode_pnfs_layout_types(xdr, fsinfo); 4879 bitmap[1] &= ~FATTR4_WORD1_FS_LAYOUT_TYPES; 4880 } 4881 return status; 4882 } 4883 4884 /* 4885 * The prefered block size for layout directed io 4886 */ 4887 static int decode_attr_layout_blksize(struct xdr_stream *xdr, uint32_t *bitmap, 4888 uint32_t *res) 4889 { 4890 __be32 *p; 4891 4892 dprintk("%s: bitmap is %x\n", __func__, bitmap[2]); 4893 *res = 0; 4894 if (bitmap[2] & FATTR4_WORD2_LAYOUT_BLKSIZE) { 4895 p = xdr_inline_decode(xdr, 4); 4896 if (unlikely(!p)) { 4897 print_overflow_msg(__func__, xdr); 4898 return -EIO; 4899 } 4900 *res = be32_to_cpup(p); 4901 bitmap[2] &= ~FATTR4_WORD2_LAYOUT_BLKSIZE; 4902 } 4903 return 0; 4904 } 4905 4906 /* 4907 * The granularity of a CLONE operation. 4908 */ 4909 static int decode_attr_clone_blksize(struct xdr_stream *xdr, uint32_t *bitmap, 4910 uint32_t *res) 4911 { 4912 __be32 *p; 4913 4914 dprintk("%s: bitmap is %x\n", __func__, bitmap[2]); 4915 *res = 0; 4916 if (bitmap[2] & FATTR4_WORD2_CLONE_BLKSIZE) { 4917 p = xdr_inline_decode(xdr, 4); 4918 if (unlikely(!p)) { 4919 print_overflow_msg(__func__, xdr); 4920 return -EIO; 4921 } 4922 *res = be32_to_cpup(p); 4923 bitmap[2] &= ~FATTR4_WORD2_CLONE_BLKSIZE; 4924 } 4925 return 0; 4926 } 4927 4928 static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo) 4929 { 4930 unsigned int savep; 4931 uint32_t attrlen, bitmap[3]; 4932 int status; 4933 4934 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) 4935 goto xdr_error; 4936 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) 4937 goto xdr_error; 4938 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) 4939 goto xdr_error; 4940 4941 fsinfo->rtmult = fsinfo->wtmult = 512; /* ??? */ 4942 4943 if ((status = decode_attr_lease_time(xdr, bitmap, &fsinfo->lease_time)) != 0) 4944 goto xdr_error; 4945 if ((status = decode_attr_maxfilesize(xdr, bitmap, &fsinfo->maxfilesize)) != 0) 4946 goto xdr_error; 4947 if ((status = decode_attr_maxread(xdr, bitmap, &fsinfo->rtmax)) != 0) 4948 goto xdr_error; 4949 fsinfo->rtpref = fsinfo->dtpref = fsinfo->rtmax; 4950 if ((status = decode_attr_maxwrite(xdr, bitmap, &fsinfo->wtmax)) != 0) 4951 goto xdr_error; 4952 fsinfo->wtpref = fsinfo->wtmax; 4953 4954 status = -EIO; 4955 if (unlikely(bitmap[0])) 4956 goto xdr_error; 4957 4958 status = decode_attr_time_delta(xdr, bitmap, &fsinfo->time_delta); 4959 if (status != 0) 4960 goto xdr_error; 4961 status = decode_attr_pnfstype(xdr, bitmap, fsinfo); 4962 if (status != 0) 4963 goto xdr_error; 4964 4965 status = -EIO; 4966 if (unlikely(bitmap[1])) 4967 goto xdr_error; 4968 4969 status = decode_attr_layout_blksize(xdr, bitmap, &fsinfo->blksize); 4970 if (status) 4971 goto xdr_error; 4972 status = decode_attr_clone_blksize(xdr, bitmap, &fsinfo->clone_blksize); 4973 if (status) 4974 goto xdr_error; 4975 4976 status = verify_attr_len(xdr, savep, attrlen); 4977 xdr_error: 4978 dprintk("%s: xdr returned %d!\n", __func__, -status); 4979 return status; 4980 } 4981 4982 static int decode_getfh(struct xdr_stream *xdr, struct nfs_fh *fh) 4983 { 4984 __be32 *p; 4985 uint32_t len; 4986 int status; 4987 4988 /* Zero handle first to allow comparisons */ 4989 memset(fh, 0, sizeof(*fh)); 4990 4991 status = decode_op_hdr(xdr, OP_GETFH); 4992 if (status) 4993 return status; 4994 4995 p = xdr_inline_decode(xdr, 4); 4996 if (unlikely(!p)) 4997 goto out_overflow; 4998 len = be32_to_cpup(p); 4999 if (len > NFS4_FHSIZE) 5000 return -EIO; 5001 fh->size = len; 5002 p = xdr_inline_decode(xdr, len); 5003 if (unlikely(!p)) 5004 goto out_overflow; 5005 memcpy(fh->data, p, len); 5006 return 0; 5007 out_overflow: 5008 print_overflow_msg(__func__, xdr); 5009 return -EIO; 5010 } 5011 5012 static int decode_link(struct xdr_stream *xdr, struct nfs4_change_info *cinfo) 5013 { 5014 int status; 5015 5016 status = decode_op_hdr(xdr, OP_LINK); 5017 if (status) 5018 return status; 5019 return decode_change_info(xdr, cinfo); 5020 } 5021 5022 /* 5023 * We create the owner, so we know a proper owner.id length is 4. 5024 */ 5025 static int decode_lock_denied (struct xdr_stream *xdr, struct file_lock *fl) 5026 { 5027 uint64_t offset, length, clientid; 5028 __be32 *p; 5029 uint32_t namelen, type; 5030 5031 p = xdr_inline_decode(xdr, 32); /* read 32 bytes */ 5032 if (unlikely(!p)) 5033 goto out_overflow; 5034 p = xdr_decode_hyper(p, &offset); /* read 2 8-byte long words */ 5035 p = xdr_decode_hyper(p, &length); 5036 type = be32_to_cpup(p++); /* 4 byte read */ 5037 if (fl != NULL) { /* manipulate file lock */ 5038 fl->fl_start = (loff_t)offset; 5039 fl->fl_end = fl->fl_start + (loff_t)length - 1; 5040 if (length == ~(uint64_t)0) 5041 fl->fl_end = OFFSET_MAX; 5042 fl->fl_type = F_WRLCK; 5043 if (type & 1) 5044 fl->fl_type = F_RDLCK; 5045 fl->fl_pid = 0; 5046 } 5047 p = xdr_decode_hyper(p, &clientid); /* read 8 bytes */ 5048 namelen = be32_to_cpup(p); /* read 4 bytes */ /* have read all 32 bytes now */ 5049 p = xdr_inline_decode(xdr, namelen); /* variable size field */ 5050 if (likely(p)) 5051 return -NFS4ERR_DENIED; 5052 out_overflow: 5053 print_overflow_msg(__func__, xdr); 5054 return -EIO; 5055 } 5056 5057 static int decode_lock(struct xdr_stream *xdr, struct nfs_lock_res *res) 5058 { 5059 int status; 5060 5061 status = decode_op_hdr(xdr, OP_LOCK); 5062 if (status == -EIO) 5063 goto out; 5064 if (status == 0) { 5065 status = decode_lock_stateid(xdr, &res->stateid); 5066 if (unlikely(status)) 5067 goto out; 5068 } else if (status == -NFS4ERR_DENIED) 5069 status = decode_lock_denied(xdr, NULL); 5070 if (res->open_seqid != NULL) 5071 nfs_increment_open_seqid(status, res->open_seqid); 5072 nfs_increment_lock_seqid(status, res->lock_seqid); 5073 out: 5074 return status; 5075 } 5076 5077 static int decode_lockt(struct xdr_stream *xdr, struct nfs_lockt_res *res) 5078 { 5079 int status; 5080 status = decode_op_hdr(xdr, OP_LOCKT); 5081 if (status == -NFS4ERR_DENIED) 5082 return decode_lock_denied(xdr, res->denied); 5083 return status; 5084 } 5085 5086 static int decode_locku(struct xdr_stream *xdr, struct nfs_locku_res *res) 5087 { 5088 int status; 5089 5090 status = decode_op_hdr(xdr, OP_LOCKU); 5091 if (status != -EIO) 5092 nfs_increment_lock_seqid(status, res->seqid); 5093 if (status == 0) 5094 status = decode_lock_stateid(xdr, &res->stateid); 5095 return status; 5096 } 5097 5098 static int decode_release_lockowner(struct xdr_stream *xdr) 5099 { 5100 return decode_op_hdr(xdr, OP_RELEASE_LOCKOWNER); 5101 } 5102 5103 static int decode_lookup(struct xdr_stream *xdr) 5104 { 5105 return decode_op_hdr(xdr, OP_LOOKUP); 5106 } 5107 5108 static int decode_lookupp(struct xdr_stream *xdr) 5109 { 5110 return decode_op_hdr(xdr, OP_LOOKUPP); 5111 } 5112 5113 /* This is too sick! */ 5114 static int decode_space_limit(struct xdr_stream *xdr, 5115 unsigned long *pagemod_limit) 5116 { 5117 __be32 *p; 5118 uint32_t limit_type, nblocks, blocksize; 5119 u64 maxsize = 0; 5120 5121 p = xdr_inline_decode(xdr, 12); 5122 if (unlikely(!p)) 5123 goto out_overflow; 5124 limit_type = be32_to_cpup(p++); 5125 switch (limit_type) { 5126 case NFS4_LIMIT_SIZE: 5127 xdr_decode_hyper(p, &maxsize); 5128 break; 5129 case NFS4_LIMIT_BLOCKS: 5130 nblocks = be32_to_cpup(p++); 5131 blocksize = be32_to_cpup(p); 5132 maxsize = (uint64_t)nblocks * (uint64_t)blocksize; 5133 } 5134 maxsize >>= PAGE_SHIFT; 5135 *pagemod_limit = min_t(u64, maxsize, ULONG_MAX); 5136 return 0; 5137 out_overflow: 5138 print_overflow_msg(__func__, xdr); 5139 return -EIO; 5140 } 5141 5142 static int decode_rw_delegation(struct xdr_stream *xdr, 5143 uint32_t delegation_type, 5144 struct nfs_openres *res) 5145 { 5146 __be32 *p; 5147 int status; 5148 5149 status = decode_delegation_stateid(xdr, &res->delegation); 5150 if (unlikely(status)) 5151 return status; 5152 p = xdr_inline_decode(xdr, 4); 5153 if (unlikely(!p)) 5154 goto out_overflow; 5155 res->do_recall = be32_to_cpup(p); 5156 5157 switch (delegation_type) { 5158 case NFS4_OPEN_DELEGATE_READ: 5159 res->delegation_type = FMODE_READ; 5160 break; 5161 case NFS4_OPEN_DELEGATE_WRITE: 5162 res->delegation_type = FMODE_WRITE|FMODE_READ; 5163 if (decode_space_limit(xdr, &res->pagemod_limit) < 0) 5164 return -EIO; 5165 } 5166 return decode_ace(xdr, NULL); 5167 out_overflow: 5168 print_overflow_msg(__func__, xdr); 5169 return -EIO; 5170 } 5171 5172 static int decode_no_delegation(struct xdr_stream *xdr, struct nfs_openres *res) 5173 { 5174 __be32 *p; 5175 uint32_t why_no_delegation; 5176 5177 p = xdr_inline_decode(xdr, 4); 5178 if (unlikely(!p)) 5179 goto out_overflow; 5180 why_no_delegation = be32_to_cpup(p); 5181 switch (why_no_delegation) { 5182 case WND4_CONTENTION: 5183 case WND4_RESOURCE: 5184 xdr_inline_decode(xdr, 4); 5185 /* Ignore for now */ 5186 } 5187 return 0; 5188 out_overflow: 5189 print_overflow_msg(__func__, xdr); 5190 return -EIO; 5191 } 5192 5193 static int decode_delegation(struct xdr_stream *xdr, struct nfs_openres *res) 5194 { 5195 __be32 *p; 5196 uint32_t delegation_type; 5197 5198 p = xdr_inline_decode(xdr, 4); 5199 if (unlikely(!p)) 5200 goto out_overflow; 5201 delegation_type = be32_to_cpup(p); 5202 res->delegation_type = 0; 5203 switch (delegation_type) { 5204 case NFS4_OPEN_DELEGATE_NONE: 5205 return 0; 5206 case NFS4_OPEN_DELEGATE_READ: 5207 case NFS4_OPEN_DELEGATE_WRITE: 5208 return decode_rw_delegation(xdr, delegation_type, res); 5209 case NFS4_OPEN_DELEGATE_NONE_EXT: 5210 return decode_no_delegation(xdr, res); 5211 } 5212 return -EIO; 5213 out_overflow: 5214 print_overflow_msg(__func__, xdr); 5215 return -EIO; 5216 } 5217 5218 static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res) 5219 { 5220 __be32 *p; 5221 uint32_t savewords, bmlen, i; 5222 int status; 5223 5224 if (!__decode_op_hdr(xdr, OP_OPEN, &status)) 5225 return status; 5226 nfs_increment_open_seqid(status, res->seqid); 5227 if (status) 5228 return status; 5229 status = decode_open_stateid(xdr, &res->stateid); 5230 if (unlikely(status)) 5231 return status; 5232 5233 decode_change_info(xdr, &res->cinfo); 5234 5235 p = xdr_inline_decode(xdr, 8); 5236 if (unlikely(!p)) 5237 goto out_overflow; 5238 res->rflags = be32_to_cpup(p++); 5239 bmlen = be32_to_cpup(p); 5240 if (bmlen > 10) 5241 goto xdr_error; 5242 5243 p = xdr_inline_decode(xdr, bmlen << 2); 5244 if (unlikely(!p)) 5245 goto out_overflow; 5246 savewords = min_t(uint32_t, bmlen, NFS4_BITMAP_SIZE); 5247 for (i = 0; i < savewords; ++i) 5248 res->attrset[i] = be32_to_cpup(p++); 5249 for (; i < NFS4_BITMAP_SIZE; i++) 5250 res->attrset[i] = 0; 5251 5252 return decode_delegation(xdr, res); 5253 xdr_error: 5254 dprintk("%s: Bitmap too large! Length = %u\n", __func__, bmlen); 5255 return -EIO; 5256 out_overflow: 5257 print_overflow_msg(__func__, xdr); 5258 return -EIO; 5259 } 5260 5261 static int decode_open_confirm(struct xdr_stream *xdr, struct nfs_open_confirmres *res) 5262 { 5263 int status; 5264 5265 status = decode_op_hdr(xdr, OP_OPEN_CONFIRM); 5266 if (status != -EIO) 5267 nfs_increment_open_seqid(status, res->seqid); 5268 if (!status) 5269 status = decode_open_stateid(xdr, &res->stateid); 5270 return status; 5271 } 5272 5273 static int decode_open_downgrade(struct xdr_stream *xdr, struct nfs_closeres *res) 5274 { 5275 int status; 5276 5277 status = decode_op_hdr(xdr, OP_OPEN_DOWNGRADE); 5278 if (status != -EIO) 5279 nfs_increment_open_seqid(status, res->seqid); 5280 if (!status) 5281 status = decode_open_stateid(xdr, &res->stateid); 5282 return status; 5283 } 5284 5285 static int decode_putfh(struct xdr_stream *xdr) 5286 { 5287 return decode_op_hdr(xdr, OP_PUTFH); 5288 } 5289 5290 static int decode_putrootfh(struct xdr_stream *xdr) 5291 { 5292 return decode_op_hdr(xdr, OP_PUTROOTFH); 5293 } 5294 5295 static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req, 5296 struct nfs_pgio_res *res) 5297 { 5298 __be32 *p; 5299 uint32_t count, eof, recvd; 5300 int status; 5301 5302 status = decode_op_hdr(xdr, OP_READ); 5303 if (status) 5304 return status; 5305 p = xdr_inline_decode(xdr, 8); 5306 if (unlikely(!p)) 5307 goto out_overflow; 5308 eof = be32_to_cpup(p++); 5309 count = be32_to_cpup(p); 5310 recvd = xdr_read_pages(xdr, count); 5311 if (count > recvd) { 5312 dprintk("NFS: server cheating in read reply: " 5313 "count %u > recvd %u\n", count, recvd); 5314 count = recvd; 5315 eof = 0; 5316 } 5317 res->eof = eof; 5318 res->count = count; 5319 return 0; 5320 out_overflow: 5321 print_overflow_msg(__func__, xdr); 5322 return -EIO; 5323 } 5324 5325 static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs4_readdir_res *readdir) 5326 { 5327 int status; 5328 __be32 verf[2]; 5329 5330 status = decode_op_hdr(xdr, OP_READDIR); 5331 if (!status) 5332 status = decode_verifier(xdr, readdir->verifier.data); 5333 if (unlikely(status)) 5334 return status; 5335 memcpy(verf, readdir->verifier.data, sizeof(verf)); 5336 dprintk("%s: verifier = %08x:%08x\n", 5337 __func__, verf[0], verf[1]); 5338 return xdr_read_pages(xdr, xdr->buf->page_len); 5339 } 5340 5341 static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req) 5342 { 5343 struct xdr_buf *rcvbuf = &req->rq_rcv_buf; 5344 u32 len, recvd; 5345 __be32 *p; 5346 int status; 5347 5348 status = decode_op_hdr(xdr, OP_READLINK); 5349 if (status) 5350 return status; 5351 5352 /* Convert length of symlink */ 5353 p = xdr_inline_decode(xdr, 4); 5354 if (unlikely(!p)) 5355 goto out_overflow; 5356 len = be32_to_cpup(p); 5357 if (len >= rcvbuf->page_len || len <= 0) { 5358 dprintk("nfs: server returned giant symlink!\n"); 5359 return -ENAMETOOLONG; 5360 } 5361 recvd = xdr_read_pages(xdr, len); 5362 if (recvd < len) { 5363 dprintk("NFS: server cheating in readlink reply: " 5364 "count %u > recvd %u\n", len, recvd); 5365 return -EIO; 5366 } 5367 /* 5368 * The XDR encode routine has set things up so that 5369 * the link text will be copied directly into the 5370 * buffer. We just have to do overflow-checking, 5371 * and and null-terminate the text (the VFS expects 5372 * null-termination). 5373 */ 5374 xdr_terminate_string(rcvbuf, len); 5375 return 0; 5376 out_overflow: 5377 print_overflow_msg(__func__, xdr); 5378 return -EIO; 5379 } 5380 5381 static int decode_remove(struct xdr_stream *xdr, struct nfs4_change_info *cinfo) 5382 { 5383 int status; 5384 5385 status = decode_op_hdr(xdr, OP_REMOVE); 5386 if (status) 5387 goto out; 5388 status = decode_change_info(xdr, cinfo); 5389 out: 5390 return status; 5391 } 5392 5393 static int decode_rename(struct xdr_stream *xdr, struct nfs4_change_info *old_cinfo, 5394 struct nfs4_change_info *new_cinfo) 5395 { 5396 int status; 5397 5398 status = decode_op_hdr(xdr, OP_RENAME); 5399 if (status) 5400 goto out; 5401 if ((status = decode_change_info(xdr, old_cinfo))) 5402 goto out; 5403 status = decode_change_info(xdr, new_cinfo); 5404 out: 5405 return status; 5406 } 5407 5408 static int decode_renew(struct xdr_stream *xdr) 5409 { 5410 return decode_op_hdr(xdr, OP_RENEW); 5411 } 5412 5413 static int 5414 decode_restorefh(struct xdr_stream *xdr) 5415 { 5416 return decode_op_hdr(xdr, OP_RESTOREFH); 5417 } 5418 5419 static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req, 5420 struct nfs_getaclres *res) 5421 { 5422 unsigned int savep; 5423 uint32_t attrlen, 5424 bitmap[3] = {0}; 5425 int status; 5426 unsigned int pg_offset; 5427 5428 res->acl_len = 0; 5429 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) 5430 goto out; 5431 5432 xdr_enter_page(xdr, xdr->buf->page_len); 5433 5434 /* Calculate the offset of the page data */ 5435 pg_offset = xdr->buf->head[0].iov_len; 5436 5437 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) 5438 goto out; 5439 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) 5440 goto out; 5441 5442 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACL - 1U))) 5443 return -EIO; 5444 if (likely(bitmap[0] & FATTR4_WORD0_ACL)) { 5445 5446 /* The bitmap (xdr len + bitmaps) and the attr xdr len words 5447 * are stored with the acl data to handle the problem of 5448 * variable length bitmaps.*/ 5449 res->acl_data_offset = xdr_stream_pos(xdr) - pg_offset; 5450 res->acl_len = attrlen; 5451 5452 /* Check for receive buffer overflow */ 5453 if (res->acl_len > (xdr->nwords << 2) || 5454 res->acl_len + res->acl_data_offset > xdr->buf->page_len) { 5455 res->acl_flags |= NFS4_ACL_TRUNC; 5456 dprintk("NFS: acl reply: attrlen %u > page_len %u\n", 5457 attrlen, xdr->nwords << 2); 5458 } 5459 } else 5460 status = -EOPNOTSUPP; 5461 5462 out: 5463 return status; 5464 } 5465 5466 static int 5467 decode_savefh(struct xdr_stream *xdr) 5468 { 5469 return decode_op_hdr(xdr, OP_SAVEFH); 5470 } 5471 5472 static int decode_setattr(struct xdr_stream *xdr) 5473 { 5474 __be32 *p; 5475 uint32_t bmlen; 5476 int status; 5477 5478 status = decode_op_hdr(xdr, OP_SETATTR); 5479 if (status) 5480 return status; 5481 p = xdr_inline_decode(xdr, 4); 5482 if (unlikely(!p)) 5483 goto out_overflow; 5484 bmlen = be32_to_cpup(p); 5485 p = xdr_inline_decode(xdr, bmlen << 2); 5486 if (likely(p)) 5487 return 0; 5488 out_overflow: 5489 print_overflow_msg(__func__, xdr); 5490 return -EIO; 5491 } 5492 5493 static int decode_setclientid(struct xdr_stream *xdr, struct nfs4_setclientid_res *res) 5494 { 5495 __be32 *p; 5496 uint32_t opnum; 5497 int32_t nfserr; 5498 5499 p = xdr_inline_decode(xdr, 8); 5500 if (unlikely(!p)) 5501 goto out_overflow; 5502 opnum = be32_to_cpup(p++); 5503 if (opnum != OP_SETCLIENTID) { 5504 dprintk("nfs: decode_setclientid: Server returned operation" 5505 " %d\n", opnum); 5506 return -EIO; 5507 } 5508 nfserr = be32_to_cpup(p); 5509 if (nfserr == NFS_OK) { 5510 p = xdr_inline_decode(xdr, 8 + NFS4_VERIFIER_SIZE); 5511 if (unlikely(!p)) 5512 goto out_overflow; 5513 p = xdr_decode_hyper(p, &res->clientid); 5514 memcpy(res->confirm.data, p, NFS4_VERIFIER_SIZE); 5515 } else if (nfserr == NFSERR_CLID_INUSE) { 5516 uint32_t len; 5517 5518 /* skip netid string */ 5519 p = xdr_inline_decode(xdr, 4); 5520 if (unlikely(!p)) 5521 goto out_overflow; 5522 len = be32_to_cpup(p); 5523 p = xdr_inline_decode(xdr, len); 5524 if (unlikely(!p)) 5525 goto out_overflow; 5526 5527 /* skip uaddr string */ 5528 p = xdr_inline_decode(xdr, 4); 5529 if (unlikely(!p)) 5530 goto out_overflow; 5531 len = be32_to_cpup(p); 5532 p = xdr_inline_decode(xdr, len); 5533 if (unlikely(!p)) 5534 goto out_overflow; 5535 return -NFSERR_CLID_INUSE; 5536 } else 5537 return nfs4_stat_to_errno(nfserr); 5538 5539 return 0; 5540 out_overflow: 5541 print_overflow_msg(__func__, xdr); 5542 return -EIO; 5543 } 5544 5545 static int decode_setclientid_confirm(struct xdr_stream *xdr) 5546 { 5547 return decode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM); 5548 } 5549 5550 static int decode_write(struct xdr_stream *xdr, struct nfs_pgio_res *res) 5551 { 5552 __be32 *p; 5553 int status; 5554 5555 status = decode_op_hdr(xdr, OP_WRITE); 5556 if (status) 5557 return status; 5558 5559 p = xdr_inline_decode(xdr, 8); 5560 if (unlikely(!p)) 5561 goto out_overflow; 5562 res->count = be32_to_cpup(p++); 5563 res->verf->committed = be32_to_cpup(p++); 5564 return decode_write_verifier(xdr, &res->verf->verifier); 5565 out_overflow: 5566 print_overflow_msg(__func__, xdr); 5567 return -EIO; 5568 } 5569 5570 static int decode_delegreturn(struct xdr_stream *xdr) 5571 { 5572 return decode_op_hdr(xdr, OP_DELEGRETURN); 5573 } 5574 5575 static int decode_secinfo_gss(struct xdr_stream *xdr, 5576 struct nfs4_secinfo4 *flavor) 5577 { 5578 u32 oid_len; 5579 __be32 *p; 5580 5581 p = xdr_inline_decode(xdr, 4); 5582 if (unlikely(!p)) 5583 goto out_overflow; 5584 oid_len = be32_to_cpup(p); 5585 if (oid_len > GSS_OID_MAX_LEN) 5586 goto out_err; 5587 5588 p = xdr_inline_decode(xdr, oid_len); 5589 if (unlikely(!p)) 5590 goto out_overflow; 5591 memcpy(flavor->flavor_info.oid.data, p, oid_len); 5592 flavor->flavor_info.oid.len = oid_len; 5593 5594 p = xdr_inline_decode(xdr, 8); 5595 if (unlikely(!p)) 5596 goto out_overflow; 5597 flavor->flavor_info.qop = be32_to_cpup(p++); 5598 flavor->flavor_info.service = be32_to_cpup(p); 5599 5600 return 0; 5601 5602 out_overflow: 5603 print_overflow_msg(__func__, xdr); 5604 return -EIO; 5605 out_err: 5606 return -EINVAL; 5607 } 5608 5609 static int decode_secinfo_common(struct xdr_stream *xdr, struct nfs4_secinfo_res *res) 5610 { 5611 struct nfs4_secinfo4 *sec_flavor; 5612 unsigned int i, num_flavors; 5613 int status; 5614 __be32 *p; 5615 5616 p = xdr_inline_decode(xdr, 4); 5617 if (unlikely(!p)) 5618 goto out_overflow; 5619 5620 res->flavors->num_flavors = 0; 5621 num_flavors = be32_to_cpup(p); 5622 5623 for (i = 0; i < num_flavors; i++) { 5624 sec_flavor = &res->flavors->flavors[i]; 5625 if ((char *)&sec_flavor[1] - (char *)res->flavors > PAGE_SIZE) 5626 break; 5627 5628 p = xdr_inline_decode(xdr, 4); 5629 if (unlikely(!p)) 5630 goto out_overflow; 5631 sec_flavor->flavor = be32_to_cpup(p); 5632 5633 if (sec_flavor->flavor == RPC_AUTH_GSS) { 5634 status = decode_secinfo_gss(xdr, sec_flavor); 5635 if (status) 5636 goto out; 5637 } 5638 res->flavors->num_flavors++; 5639 } 5640 5641 status = 0; 5642 out: 5643 return status; 5644 out_overflow: 5645 print_overflow_msg(__func__, xdr); 5646 return -EIO; 5647 } 5648 5649 static int decode_secinfo(struct xdr_stream *xdr, struct nfs4_secinfo_res *res) 5650 { 5651 int status = decode_op_hdr(xdr, OP_SECINFO); 5652 if (status) 5653 return status; 5654 return decode_secinfo_common(xdr, res); 5655 } 5656 5657 #if defined(CONFIG_NFS_V4_1) 5658 static int decode_secinfo_no_name(struct xdr_stream *xdr, struct nfs4_secinfo_res *res) 5659 { 5660 int status = decode_op_hdr(xdr, OP_SECINFO_NO_NAME); 5661 if (status) 5662 return status; 5663 return decode_secinfo_common(xdr, res); 5664 } 5665 5666 static int decode_op_map(struct xdr_stream *xdr, struct nfs4_op_map *op_map) 5667 { 5668 __be32 *p; 5669 uint32_t bitmap_words; 5670 unsigned int i; 5671 5672 p = xdr_inline_decode(xdr, 4); 5673 if (!p) 5674 return -EIO; 5675 bitmap_words = be32_to_cpup(p++); 5676 if (bitmap_words > NFS4_OP_MAP_NUM_WORDS) 5677 return -EIO; 5678 p = xdr_inline_decode(xdr, 4 * bitmap_words); 5679 for (i = 0; i < bitmap_words; i++) 5680 op_map->u.words[i] = be32_to_cpup(p++); 5681 5682 return 0; 5683 } 5684 5685 static int decode_exchange_id(struct xdr_stream *xdr, 5686 struct nfs41_exchange_id_res *res) 5687 { 5688 __be32 *p; 5689 uint32_t dummy; 5690 char *dummy_str; 5691 int status; 5692 uint32_t impl_id_count; 5693 5694 status = decode_op_hdr(xdr, OP_EXCHANGE_ID); 5695 if (status) 5696 return status; 5697 5698 p = xdr_inline_decode(xdr, 8); 5699 if (unlikely(!p)) 5700 goto out_overflow; 5701 xdr_decode_hyper(p, &res->clientid); 5702 p = xdr_inline_decode(xdr, 12); 5703 if (unlikely(!p)) 5704 goto out_overflow; 5705 res->seqid = be32_to_cpup(p++); 5706 res->flags = be32_to_cpup(p++); 5707 5708 res->state_protect.how = be32_to_cpup(p); 5709 switch (res->state_protect.how) { 5710 case SP4_NONE: 5711 break; 5712 case SP4_MACH_CRED: 5713 status = decode_op_map(xdr, &res->state_protect.enforce); 5714 if (status) 5715 return status; 5716 status = decode_op_map(xdr, &res->state_protect.allow); 5717 if (status) 5718 return status; 5719 break; 5720 default: 5721 WARN_ON_ONCE(1); 5722 return -EIO; 5723 } 5724 5725 /* server_owner4.so_minor_id */ 5726 p = xdr_inline_decode(xdr, 8); 5727 if (unlikely(!p)) 5728 goto out_overflow; 5729 p = xdr_decode_hyper(p, &res->server_owner->minor_id); 5730 5731 /* server_owner4.so_major_id */ 5732 status = decode_opaque_inline(xdr, &dummy, &dummy_str); 5733 if (unlikely(status)) 5734 return status; 5735 memcpy(res->server_owner->major_id, dummy_str, dummy); 5736 res->server_owner->major_id_sz = dummy; 5737 5738 /* server_scope4 */ 5739 status = decode_opaque_inline(xdr, &dummy, &dummy_str); 5740 if (unlikely(status)) 5741 return status; 5742 memcpy(res->server_scope->server_scope, dummy_str, dummy); 5743 res->server_scope->server_scope_sz = dummy; 5744 5745 /* Implementation Id */ 5746 p = xdr_inline_decode(xdr, 4); 5747 if (unlikely(!p)) 5748 goto out_overflow; 5749 impl_id_count = be32_to_cpup(p++); 5750 5751 if (impl_id_count) { 5752 /* nii_domain */ 5753 status = decode_opaque_inline(xdr, &dummy, &dummy_str); 5754 if (unlikely(status)) 5755 return status; 5756 memcpy(res->impl_id->domain, dummy_str, dummy); 5757 5758 /* nii_name */ 5759 status = decode_opaque_inline(xdr, &dummy, &dummy_str); 5760 if (unlikely(status)) 5761 return status; 5762 memcpy(res->impl_id->name, dummy_str, dummy); 5763 5764 /* nii_date */ 5765 p = xdr_inline_decode(xdr, 12); 5766 if (unlikely(!p)) 5767 goto out_overflow; 5768 p = xdr_decode_hyper(p, &res->impl_id->date.seconds); 5769 res->impl_id->date.nseconds = be32_to_cpup(p); 5770 5771 /* if there's more than one entry, ignore the rest */ 5772 } 5773 return 0; 5774 out_overflow: 5775 print_overflow_msg(__func__, xdr); 5776 return -EIO; 5777 } 5778 5779 static int decode_chan_attrs(struct xdr_stream *xdr, 5780 struct nfs4_channel_attrs *attrs) 5781 { 5782 __be32 *p; 5783 u32 nr_attrs, val; 5784 5785 p = xdr_inline_decode(xdr, 28); 5786 if (unlikely(!p)) 5787 goto out_overflow; 5788 val = be32_to_cpup(p++); /* headerpadsz */ 5789 if (val) 5790 return -EINVAL; /* no support for header padding yet */ 5791 attrs->max_rqst_sz = be32_to_cpup(p++); 5792 attrs->max_resp_sz = be32_to_cpup(p++); 5793 attrs->max_resp_sz_cached = be32_to_cpup(p++); 5794 attrs->max_ops = be32_to_cpup(p++); 5795 attrs->max_reqs = be32_to_cpup(p++); 5796 nr_attrs = be32_to_cpup(p); 5797 if (unlikely(nr_attrs > 1)) { 5798 printk(KERN_WARNING "NFS: %s: Invalid rdma channel attrs " 5799 "count %u\n", __func__, nr_attrs); 5800 return -EINVAL; 5801 } 5802 if (nr_attrs == 1) { 5803 p = xdr_inline_decode(xdr, 4); /* skip rdma_attrs */ 5804 if (unlikely(!p)) 5805 goto out_overflow; 5806 } 5807 return 0; 5808 out_overflow: 5809 print_overflow_msg(__func__, xdr); 5810 return -EIO; 5811 } 5812 5813 static int decode_sessionid(struct xdr_stream *xdr, struct nfs4_sessionid *sid) 5814 { 5815 return decode_opaque_fixed(xdr, sid->data, NFS4_MAX_SESSIONID_LEN); 5816 } 5817 5818 static int decode_bind_conn_to_session(struct xdr_stream *xdr, 5819 struct nfs41_bind_conn_to_session_res *res) 5820 { 5821 __be32 *p; 5822 int status; 5823 5824 status = decode_op_hdr(xdr, OP_BIND_CONN_TO_SESSION); 5825 if (!status) 5826 status = decode_sessionid(xdr, &res->sessionid); 5827 if (unlikely(status)) 5828 return status; 5829 5830 /* dir flags, rdma mode bool */ 5831 p = xdr_inline_decode(xdr, 8); 5832 if (unlikely(!p)) 5833 goto out_overflow; 5834 5835 res->dir = be32_to_cpup(p++); 5836 if (res->dir == 0 || res->dir > NFS4_CDFS4_BOTH) 5837 return -EIO; 5838 if (be32_to_cpup(p) == 0) 5839 res->use_conn_in_rdma_mode = false; 5840 else 5841 res->use_conn_in_rdma_mode = true; 5842 5843 return 0; 5844 out_overflow: 5845 print_overflow_msg(__func__, xdr); 5846 return -EIO; 5847 } 5848 5849 static int decode_create_session(struct xdr_stream *xdr, 5850 struct nfs41_create_session_res *res) 5851 { 5852 __be32 *p; 5853 int status; 5854 5855 status = decode_op_hdr(xdr, OP_CREATE_SESSION); 5856 if (!status) 5857 status = decode_sessionid(xdr, &res->sessionid); 5858 if (unlikely(status)) 5859 return status; 5860 5861 /* seqid, flags */ 5862 p = xdr_inline_decode(xdr, 8); 5863 if (unlikely(!p)) 5864 goto out_overflow; 5865 res->seqid = be32_to_cpup(p++); 5866 res->flags = be32_to_cpup(p); 5867 5868 /* Channel attributes */ 5869 status = decode_chan_attrs(xdr, &res->fc_attrs); 5870 if (!status) 5871 status = decode_chan_attrs(xdr, &res->bc_attrs); 5872 return status; 5873 out_overflow: 5874 print_overflow_msg(__func__, xdr); 5875 return -EIO; 5876 } 5877 5878 static int decode_destroy_session(struct xdr_stream *xdr, void *dummy) 5879 { 5880 return decode_op_hdr(xdr, OP_DESTROY_SESSION); 5881 } 5882 5883 static int decode_destroy_clientid(struct xdr_stream *xdr, void *dummy) 5884 { 5885 return decode_op_hdr(xdr, OP_DESTROY_CLIENTID); 5886 } 5887 5888 static int decode_reclaim_complete(struct xdr_stream *xdr, void *dummy) 5889 { 5890 return decode_op_hdr(xdr, OP_RECLAIM_COMPLETE); 5891 } 5892 #endif /* CONFIG_NFS_V4_1 */ 5893 5894 static int decode_sequence(struct xdr_stream *xdr, 5895 struct nfs4_sequence_res *res, 5896 struct rpc_rqst *rqstp) 5897 { 5898 #if defined(CONFIG_NFS_V4_1) 5899 struct nfs4_session *session; 5900 struct nfs4_sessionid id; 5901 u32 dummy; 5902 int status; 5903 __be32 *p; 5904 5905 if (res->sr_slot == NULL) 5906 return 0; 5907 if (!res->sr_slot->table->session) 5908 return 0; 5909 5910 status = decode_op_hdr(xdr, OP_SEQUENCE); 5911 if (!status) 5912 status = decode_sessionid(xdr, &id); 5913 if (unlikely(status)) 5914 goto out_err; 5915 5916 /* 5917 * If the server returns different values for sessionID, slotID or 5918 * sequence number, the server is looney tunes. 5919 */ 5920 status = -EREMOTEIO; 5921 session = res->sr_slot->table->session; 5922 5923 if (memcmp(id.data, session->sess_id.data, 5924 NFS4_MAX_SESSIONID_LEN)) { 5925 dprintk("%s Invalid session id\n", __func__); 5926 goto out_err; 5927 } 5928 5929 p = xdr_inline_decode(xdr, 20); 5930 if (unlikely(!p)) 5931 goto out_overflow; 5932 5933 /* seqid */ 5934 dummy = be32_to_cpup(p++); 5935 if (dummy != res->sr_slot->seq_nr) { 5936 dprintk("%s Invalid sequence number\n", __func__); 5937 goto out_err; 5938 } 5939 /* slot id */ 5940 dummy = be32_to_cpup(p++); 5941 if (dummy != res->sr_slot->slot_nr) { 5942 dprintk("%s Invalid slot id\n", __func__); 5943 goto out_err; 5944 } 5945 /* highest slot id */ 5946 res->sr_highest_slotid = be32_to_cpup(p++); 5947 /* target highest slot id */ 5948 res->sr_target_highest_slotid = be32_to_cpup(p++); 5949 /* result flags */ 5950 res->sr_status_flags = be32_to_cpup(p); 5951 status = 0; 5952 out_err: 5953 res->sr_status = status; 5954 return status; 5955 out_overflow: 5956 print_overflow_msg(__func__, xdr); 5957 status = -EIO; 5958 goto out_err; 5959 #else /* CONFIG_NFS_V4_1 */ 5960 return 0; 5961 #endif /* CONFIG_NFS_V4_1 */ 5962 } 5963 5964 #if defined(CONFIG_NFS_V4_1) 5965 static int decode_layout_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid) 5966 { 5967 stateid->type = NFS4_LAYOUT_STATEID_TYPE; 5968 return decode_stateid(xdr, stateid); 5969 } 5970 5971 static int decode_getdeviceinfo(struct xdr_stream *xdr, 5972 struct nfs4_getdeviceinfo_res *res) 5973 { 5974 struct pnfs_device *pdev = res->pdev; 5975 __be32 *p; 5976 uint32_t len, type; 5977 int status; 5978 5979 status = decode_op_hdr(xdr, OP_GETDEVICEINFO); 5980 if (status) { 5981 if (status == -ETOOSMALL) { 5982 p = xdr_inline_decode(xdr, 4); 5983 if (unlikely(!p)) 5984 goto out_overflow; 5985 pdev->mincount = be32_to_cpup(p); 5986 dprintk("%s: Min count too small. mincnt = %u\n", 5987 __func__, pdev->mincount); 5988 } 5989 return status; 5990 } 5991 5992 p = xdr_inline_decode(xdr, 8); 5993 if (unlikely(!p)) 5994 goto out_overflow; 5995 type = be32_to_cpup(p++); 5996 if (type != pdev->layout_type) { 5997 dprintk("%s: layout mismatch req: %u pdev: %u\n", 5998 __func__, pdev->layout_type, type); 5999 return -EINVAL; 6000 } 6001 /* 6002 * Get the length of the opaque device_addr4. xdr_read_pages places 6003 * the opaque device_addr4 in the xdr_buf->pages (pnfs_device->pages) 6004 * and places the remaining xdr data in xdr_buf->tail 6005 */ 6006 pdev->mincount = be32_to_cpup(p); 6007 if (xdr_read_pages(xdr, pdev->mincount) != pdev->mincount) 6008 goto out_overflow; 6009 6010 /* Parse notification bitmap, verifying that it is zero. */ 6011 p = xdr_inline_decode(xdr, 4); 6012 if (unlikely(!p)) 6013 goto out_overflow; 6014 len = be32_to_cpup(p); 6015 if (len) { 6016 uint32_t i; 6017 6018 p = xdr_inline_decode(xdr, 4 * len); 6019 if (unlikely(!p)) 6020 goto out_overflow; 6021 6022 res->notification = be32_to_cpup(p++); 6023 for (i = 1; i < len; i++) { 6024 if (be32_to_cpup(p++)) { 6025 dprintk("%s: unsupported notification\n", 6026 __func__); 6027 return -EIO; 6028 } 6029 } 6030 } 6031 return 0; 6032 out_overflow: 6033 print_overflow_msg(__func__, xdr); 6034 return -EIO; 6035 } 6036 6037 static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req, 6038 struct nfs4_layoutget_res *res) 6039 { 6040 __be32 *p; 6041 int status; 6042 u32 layout_count; 6043 u32 recvd; 6044 6045 status = decode_op_hdr(xdr, OP_LAYOUTGET); 6046 if (status) 6047 return status; 6048 p = xdr_inline_decode(xdr, 4); 6049 if (unlikely(!p)) 6050 goto out_overflow; 6051 res->return_on_close = be32_to_cpup(p); 6052 decode_layout_stateid(xdr, &res->stateid); 6053 p = xdr_inline_decode(xdr, 4); 6054 if (unlikely(!p)) 6055 goto out_overflow; 6056 layout_count = be32_to_cpup(p); 6057 if (!layout_count) { 6058 dprintk("%s: server responded with empty layout array\n", 6059 __func__); 6060 return -EINVAL; 6061 } 6062 6063 p = xdr_inline_decode(xdr, 28); 6064 if (unlikely(!p)) 6065 goto out_overflow; 6066 p = xdr_decode_hyper(p, &res->range.offset); 6067 p = xdr_decode_hyper(p, &res->range.length); 6068 res->range.iomode = be32_to_cpup(p++); 6069 res->type = be32_to_cpup(p++); 6070 res->layoutp->len = be32_to_cpup(p); 6071 6072 dprintk("%s roff:%lu rlen:%lu riomode:%d, lo_type:0x%x, lo.len:%d\n", 6073 __func__, 6074 (unsigned long)res->range.offset, 6075 (unsigned long)res->range.length, 6076 res->range.iomode, 6077 res->type, 6078 res->layoutp->len); 6079 6080 recvd = xdr_read_pages(xdr, res->layoutp->len); 6081 if (res->layoutp->len > recvd) { 6082 dprintk("NFS: server cheating in layoutget reply: " 6083 "layout len %u > recvd %u\n", 6084 res->layoutp->len, recvd); 6085 return -EINVAL; 6086 } 6087 6088 if (layout_count > 1) { 6089 /* We only handle a length one array at the moment. Any 6090 * further entries are just ignored. Note that this means 6091 * the client may see a response that is less than the 6092 * minimum it requested. 6093 */ 6094 dprintk("%s: server responded with %d layouts, dropping tail\n", 6095 __func__, layout_count); 6096 } 6097 6098 return 0; 6099 out_overflow: 6100 print_overflow_msg(__func__, xdr); 6101 return -EIO; 6102 } 6103 6104 static int decode_layoutreturn(struct xdr_stream *xdr, 6105 struct nfs4_layoutreturn_res *res) 6106 { 6107 __be32 *p; 6108 int status; 6109 6110 status = decode_op_hdr(xdr, OP_LAYOUTRETURN); 6111 if (status) 6112 return status; 6113 p = xdr_inline_decode(xdr, 4); 6114 if (unlikely(!p)) 6115 goto out_overflow; 6116 res->lrs_present = be32_to_cpup(p); 6117 if (res->lrs_present) 6118 status = decode_layout_stateid(xdr, &res->stateid); 6119 else 6120 nfs4_stateid_copy(&res->stateid, &invalid_stateid); 6121 return status; 6122 out_overflow: 6123 print_overflow_msg(__func__, xdr); 6124 return -EIO; 6125 } 6126 6127 static int decode_layoutcommit(struct xdr_stream *xdr, 6128 struct rpc_rqst *req, 6129 struct nfs4_layoutcommit_res *res) 6130 { 6131 __be32 *p; 6132 __u32 sizechanged; 6133 int status; 6134 6135 status = decode_op_hdr(xdr, OP_LAYOUTCOMMIT); 6136 res->status = status; 6137 if (status) 6138 return status; 6139 6140 p = xdr_inline_decode(xdr, 4); 6141 if (unlikely(!p)) 6142 goto out_overflow; 6143 sizechanged = be32_to_cpup(p); 6144 6145 if (sizechanged) { 6146 /* throw away new size */ 6147 p = xdr_inline_decode(xdr, 8); 6148 if (unlikely(!p)) 6149 goto out_overflow; 6150 } 6151 return 0; 6152 out_overflow: 6153 print_overflow_msg(__func__, xdr); 6154 return -EIO; 6155 } 6156 6157 static int decode_test_stateid(struct xdr_stream *xdr, 6158 struct nfs41_test_stateid_res *res) 6159 { 6160 __be32 *p; 6161 int status; 6162 int num_res; 6163 6164 status = decode_op_hdr(xdr, OP_TEST_STATEID); 6165 if (status) 6166 return status; 6167 6168 p = xdr_inline_decode(xdr, 4); 6169 if (unlikely(!p)) 6170 goto out_overflow; 6171 num_res = be32_to_cpup(p++); 6172 if (num_res != 1) 6173 goto out; 6174 6175 p = xdr_inline_decode(xdr, 4); 6176 if (unlikely(!p)) 6177 goto out_overflow; 6178 res->status = be32_to_cpup(p++); 6179 6180 return status; 6181 out_overflow: 6182 print_overflow_msg(__func__, xdr); 6183 out: 6184 return -EIO; 6185 } 6186 6187 static int decode_free_stateid(struct xdr_stream *xdr, 6188 struct nfs41_free_stateid_res *res) 6189 { 6190 res->status = decode_op_hdr(xdr, OP_FREE_STATEID); 6191 return res->status; 6192 } 6193 #else 6194 static inline 6195 int decode_layoutreturn(struct xdr_stream *xdr, 6196 struct nfs4_layoutreturn_res *res) 6197 { 6198 return 0; 6199 } 6200 #endif /* CONFIG_NFS_V4_1 */ 6201 6202 /* 6203 * END OF "GENERIC" DECODE ROUTINES. 6204 */ 6205 6206 /* 6207 * Decode OPEN_DOWNGRADE response 6208 */ 6209 static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp, 6210 struct xdr_stream *xdr, 6211 void *data) 6212 { 6213 struct nfs_closeres *res = data; 6214 struct compound_hdr hdr; 6215 int status; 6216 6217 status = decode_compound_hdr(xdr, &hdr); 6218 if (status) 6219 goto out; 6220 status = decode_sequence(xdr, &res->seq_res, rqstp); 6221 if (status) 6222 goto out; 6223 status = decode_putfh(xdr); 6224 if (status) 6225 goto out; 6226 if (res->lr_res) { 6227 status = decode_layoutreturn(xdr, res->lr_res); 6228 res->lr_ret = status; 6229 if (status) 6230 goto out; 6231 } 6232 status = decode_open_downgrade(xdr, res); 6233 out: 6234 return status; 6235 } 6236 6237 /* 6238 * Decode ACCESS response 6239 */ 6240 static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6241 void *data) 6242 { 6243 struct nfs4_accessres *res = data; 6244 struct compound_hdr hdr; 6245 int status; 6246 6247 status = decode_compound_hdr(xdr, &hdr); 6248 if (status) 6249 goto out; 6250 status = decode_sequence(xdr, &res->seq_res, rqstp); 6251 if (status) 6252 goto out; 6253 status = decode_putfh(xdr); 6254 if (status != 0) 6255 goto out; 6256 status = decode_access(xdr, &res->supported, &res->access); 6257 if (status != 0) 6258 goto out; 6259 decode_getfattr(xdr, res->fattr, res->server); 6260 out: 6261 return status; 6262 } 6263 6264 /* 6265 * Decode LOOKUP response 6266 */ 6267 static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6268 void *data) 6269 { 6270 struct nfs4_lookup_res *res = data; 6271 struct compound_hdr hdr; 6272 int status; 6273 6274 status = decode_compound_hdr(xdr, &hdr); 6275 if (status) 6276 goto out; 6277 status = decode_sequence(xdr, &res->seq_res, rqstp); 6278 if (status) 6279 goto out; 6280 status = decode_putfh(xdr); 6281 if (status) 6282 goto out; 6283 status = decode_lookup(xdr); 6284 if (status) 6285 goto out; 6286 status = decode_getfh(xdr, res->fh); 6287 if (status) 6288 goto out; 6289 status = decode_getfattr_label(xdr, res->fattr, res->label, res->server); 6290 out: 6291 return status; 6292 } 6293 6294 /* 6295 * Decode LOOKUPP response 6296 */ 6297 static int nfs4_xdr_dec_lookupp(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6298 void *data) 6299 { 6300 struct nfs4_lookupp_res *res = data; 6301 struct compound_hdr hdr; 6302 int status; 6303 6304 status = decode_compound_hdr(xdr, &hdr); 6305 if (status) 6306 goto out; 6307 status = decode_sequence(xdr, &res->seq_res, rqstp); 6308 if (status) 6309 goto out; 6310 status = decode_putfh(xdr); 6311 if (status) 6312 goto out; 6313 status = decode_lookupp(xdr); 6314 if (status) 6315 goto out; 6316 status = decode_getfh(xdr, res->fh); 6317 if (status) 6318 goto out; 6319 status = decode_getfattr_label(xdr, res->fattr, res->label, res->server); 6320 out: 6321 return status; 6322 } 6323 6324 /* 6325 * Decode LOOKUP_ROOT response 6326 */ 6327 static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp, 6328 struct xdr_stream *xdr, 6329 void *data) 6330 { 6331 struct nfs4_lookup_res *res = data; 6332 struct compound_hdr hdr; 6333 int status; 6334 6335 status = decode_compound_hdr(xdr, &hdr); 6336 if (status) 6337 goto out; 6338 status = decode_sequence(xdr, &res->seq_res, rqstp); 6339 if (status) 6340 goto out; 6341 status = decode_putrootfh(xdr); 6342 if (status) 6343 goto out; 6344 status = decode_getfh(xdr, res->fh); 6345 if (status == 0) 6346 status = decode_getfattr_label(xdr, res->fattr, 6347 res->label, res->server); 6348 out: 6349 return status; 6350 } 6351 6352 /* 6353 * Decode REMOVE response 6354 */ 6355 static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6356 void *data) 6357 { 6358 struct nfs_removeres *res = data; 6359 struct compound_hdr hdr; 6360 int status; 6361 6362 status = decode_compound_hdr(xdr, &hdr); 6363 if (status) 6364 goto out; 6365 status = decode_sequence(xdr, &res->seq_res, rqstp); 6366 if (status) 6367 goto out; 6368 status = decode_putfh(xdr); 6369 if (status) 6370 goto out; 6371 status = decode_remove(xdr, &res->cinfo); 6372 out: 6373 return status; 6374 } 6375 6376 /* 6377 * Decode RENAME response 6378 */ 6379 static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6380 void *data) 6381 { 6382 struct nfs_renameres *res = data; 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_savefh(xdr); 6396 if (status) 6397 goto out; 6398 status = decode_putfh(xdr); 6399 if (status) 6400 goto out; 6401 status = decode_rename(xdr, &res->old_cinfo, &res->new_cinfo); 6402 out: 6403 return status; 6404 } 6405 6406 /* 6407 * Decode LINK response 6408 */ 6409 static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6410 void *data) 6411 { 6412 struct nfs4_link_res *res = data; 6413 struct compound_hdr hdr; 6414 int status; 6415 6416 status = decode_compound_hdr(xdr, &hdr); 6417 if (status) 6418 goto out; 6419 status = decode_sequence(xdr, &res->seq_res, rqstp); 6420 if (status) 6421 goto out; 6422 status = decode_putfh(xdr); 6423 if (status) 6424 goto out; 6425 status = decode_savefh(xdr); 6426 if (status) 6427 goto out; 6428 status = decode_putfh(xdr); 6429 if (status) 6430 goto out; 6431 status = decode_link(xdr, &res->cinfo); 6432 if (status) 6433 goto out; 6434 /* 6435 * Note order: OP_LINK leaves the directory as the current 6436 * filehandle. 6437 */ 6438 status = decode_restorefh(xdr); 6439 if (status) 6440 goto out; 6441 decode_getfattr_label(xdr, res->fattr, res->label, res->server); 6442 out: 6443 return status; 6444 } 6445 6446 /* 6447 * Decode CREATE response 6448 */ 6449 static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6450 void *data) 6451 { 6452 struct nfs4_create_res *res = data; 6453 struct compound_hdr hdr; 6454 int status; 6455 6456 status = decode_compound_hdr(xdr, &hdr); 6457 if (status) 6458 goto out; 6459 status = decode_sequence(xdr, &res->seq_res, rqstp); 6460 if (status) 6461 goto out; 6462 status = decode_putfh(xdr); 6463 if (status) 6464 goto out; 6465 status = decode_create(xdr, &res->dir_cinfo); 6466 if (status) 6467 goto out; 6468 status = decode_getfh(xdr, res->fh); 6469 if (status) 6470 goto out; 6471 decode_getfattr_label(xdr, res->fattr, res->label, res->server); 6472 out: 6473 return status; 6474 } 6475 6476 /* 6477 * Decode SYMLINK response 6478 */ 6479 static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6480 void *res) 6481 { 6482 return nfs4_xdr_dec_create(rqstp, xdr, res); 6483 } 6484 6485 /* 6486 * Decode GETATTR response 6487 */ 6488 static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6489 void *data) 6490 { 6491 struct nfs4_getattr_res *res = data; 6492 struct compound_hdr hdr; 6493 int status; 6494 6495 status = decode_compound_hdr(xdr, &hdr); 6496 if (status) 6497 goto out; 6498 status = decode_sequence(xdr, &res->seq_res, rqstp); 6499 if (status) 6500 goto out; 6501 status = decode_putfh(xdr); 6502 if (status) 6503 goto out; 6504 status = decode_getfattr_label(xdr, res->fattr, res->label, res->server); 6505 out: 6506 return status; 6507 } 6508 6509 /* 6510 * Encode an SETACL request 6511 */ 6512 static void nfs4_xdr_enc_setacl(struct rpc_rqst *req, struct xdr_stream *xdr, 6513 const void *data) 6514 { 6515 const struct nfs_setaclargs *args = data; 6516 struct compound_hdr hdr = { 6517 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 6518 }; 6519 6520 encode_compound_hdr(xdr, req, &hdr); 6521 encode_sequence(xdr, &args->seq_args, &hdr); 6522 encode_putfh(xdr, args->fh, &hdr); 6523 encode_setacl(xdr, args, &hdr); 6524 encode_nops(&hdr); 6525 } 6526 6527 /* 6528 * Decode SETACL response 6529 */ 6530 static int 6531 nfs4_xdr_dec_setacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6532 void *data) 6533 { 6534 struct nfs_setaclres *res = data; 6535 struct compound_hdr hdr; 6536 int status; 6537 6538 status = decode_compound_hdr(xdr, &hdr); 6539 if (status) 6540 goto out; 6541 status = decode_sequence(xdr, &res->seq_res, rqstp); 6542 if (status) 6543 goto out; 6544 status = decode_putfh(xdr); 6545 if (status) 6546 goto out; 6547 status = decode_setattr(xdr); 6548 out: 6549 return status; 6550 } 6551 6552 /* 6553 * Decode GETACL response 6554 */ 6555 static int 6556 nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6557 void *data) 6558 { 6559 struct nfs_getaclres *res = data; 6560 struct compound_hdr hdr; 6561 int status; 6562 6563 if (res->acl_scratch != NULL) { 6564 void *p = page_address(res->acl_scratch); 6565 xdr_set_scratch_buffer(xdr, p, PAGE_SIZE); 6566 } 6567 status = decode_compound_hdr(xdr, &hdr); 6568 if (status) 6569 goto out; 6570 status = decode_sequence(xdr, &res->seq_res, rqstp); 6571 if (status) 6572 goto out; 6573 status = decode_putfh(xdr); 6574 if (status) 6575 goto out; 6576 status = decode_getacl(xdr, rqstp, res); 6577 6578 out: 6579 return status; 6580 } 6581 6582 /* 6583 * Decode CLOSE response 6584 */ 6585 static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6586 void *data) 6587 { 6588 struct nfs_closeres *res = data; 6589 struct compound_hdr hdr; 6590 int status; 6591 6592 status = decode_compound_hdr(xdr, &hdr); 6593 if (status) 6594 goto out; 6595 status = decode_sequence(xdr, &res->seq_res, rqstp); 6596 if (status) 6597 goto out; 6598 status = decode_putfh(xdr); 6599 if (status) 6600 goto out; 6601 if (res->lr_res) { 6602 status = decode_layoutreturn(xdr, res->lr_res); 6603 res->lr_ret = status; 6604 if (status) 6605 goto out; 6606 } 6607 if (res->fattr != NULL) { 6608 status = decode_getfattr(xdr, res->fattr, res->server); 6609 if (status != 0) 6610 goto out; 6611 } 6612 status = decode_close(xdr, res); 6613 out: 6614 return status; 6615 } 6616 6617 /* 6618 * Decode OPEN response 6619 */ 6620 static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6621 void *data) 6622 { 6623 struct nfs_openres *res = data; 6624 struct compound_hdr hdr; 6625 int status; 6626 6627 status = decode_compound_hdr(xdr, &hdr); 6628 if (status) 6629 goto out; 6630 status = decode_sequence(xdr, &res->seq_res, rqstp); 6631 if (status) 6632 goto out; 6633 status = decode_putfh(xdr); 6634 if (status) 6635 goto out; 6636 status = decode_open(xdr, res); 6637 if (status) 6638 goto out; 6639 status = decode_getfh(xdr, &res->fh); 6640 if (status) 6641 goto out; 6642 if (res->access_request) 6643 decode_access(xdr, &res->access_supported, &res->access_result); 6644 decode_getfattr_label(xdr, res->f_attr, res->f_label, res->server); 6645 out: 6646 return status; 6647 } 6648 6649 /* 6650 * Decode OPEN_CONFIRM response 6651 */ 6652 static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp, 6653 struct xdr_stream *xdr, 6654 void *data) 6655 { 6656 struct nfs_open_confirmres *res = data; 6657 struct compound_hdr hdr; 6658 int status; 6659 6660 status = decode_compound_hdr(xdr, &hdr); 6661 if (status) 6662 goto out; 6663 status = decode_putfh(xdr); 6664 if (status) 6665 goto out; 6666 status = decode_open_confirm(xdr, res); 6667 out: 6668 return status; 6669 } 6670 6671 /* 6672 * Decode OPEN response 6673 */ 6674 static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp, 6675 struct xdr_stream *xdr, 6676 void *data) 6677 { 6678 struct nfs_openres *res = data; 6679 struct compound_hdr hdr; 6680 int status; 6681 6682 status = decode_compound_hdr(xdr, &hdr); 6683 if (status) 6684 goto out; 6685 status = decode_sequence(xdr, &res->seq_res, rqstp); 6686 if (status) 6687 goto out; 6688 status = decode_putfh(xdr); 6689 if (status) 6690 goto out; 6691 status = decode_open(xdr, res); 6692 if (status) 6693 goto out; 6694 if (res->access_request) 6695 decode_access(xdr, &res->access_supported, &res->access_result); 6696 decode_getfattr(xdr, res->f_attr, res->server); 6697 out: 6698 return status; 6699 } 6700 6701 /* 6702 * Decode SETATTR response 6703 */ 6704 static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp, 6705 struct xdr_stream *xdr, 6706 void *data) 6707 { 6708 struct nfs_setattrres *res = data; 6709 struct compound_hdr hdr; 6710 int status; 6711 6712 status = decode_compound_hdr(xdr, &hdr); 6713 if (status) 6714 goto out; 6715 status = decode_sequence(xdr, &res->seq_res, rqstp); 6716 if (status) 6717 goto out; 6718 status = decode_putfh(xdr); 6719 if (status) 6720 goto out; 6721 status = decode_setattr(xdr); 6722 if (status) 6723 goto out; 6724 decode_getfattr_label(xdr, res->fattr, res->label, res->server); 6725 out: 6726 return status; 6727 } 6728 6729 /* 6730 * Decode LOCK response 6731 */ 6732 static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6733 void *data) 6734 { 6735 struct nfs_lock_res *res = data; 6736 struct compound_hdr hdr; 6737 int status; 6738 6739 status = decode_compound_hdr(xdr, &hdr); 6740 if (status) 6741 goto out; 6742 status = decode_sequence(xdr, &res->seq_res, rqstp); 6743 if (status) 6744 goto out; 6745 status = decode_putfh(xdr); 6746 if (status) 6747 goto out; 6748 status = decode_lock(xdr, res); 6749 out: 6750 return status; 6751 } 6752 6753 /* 6754 * Decode LOCKT response 6755 */ 6756 static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6757 void *data) 6758 { 6759 struct nfs_lockt_res *res = data; 6760 struct compound_hdr hdr; 6761 int status; 6762 6763 status = decode_compound_hdr(xdr, &hdr); 6764 if (status) 6765 goto out; 6766 status = decode_sequence(xdr, &res->seq_res, rqstp); 6767 if (status) 6768 goto out; 6769 status = decode_putfh(xdr); 6770 if (status) 6771 goto out; 6772 status = decode_lockt(xdr, res); 6773 out: 6774 return status; 6775 } 6776 6777 /* 6778 * Decode LOCKU response 6779 */ 6780 static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6781 void *data) 6782 { 6783 struct nfs_locku_res *res = data; 6784 struct compound_hdr hdr; 6785 int status; 6786 6787 status = decode_compound_hdr(xdr, &hdr); 6788 if (status) 6789 goto out; 6790 status = decode_sequence(xdr, &res->seq_res, rqstp); 6791 if (status) 6792 goto out; 6793 status = decode_putfh(xdr); 6794 if (status) 6795 goto out; 6796 status = decode_locku(xdr, res); 6797 out: 6798 return status; 6799 } 6800 6801 static int nfs4_xdr_dec_release_lockowner(struct rpc_rqst *rqstp, 6802 struct xdr_stream *xdr, void *dummy) 6803 { 6804 struct compound_hdr hdr; 6805 int status; 6806 6807 status = decode_compound_hdr(xdr, &hdr); 6808 if (!status) 6809 status = decode_release_lockowner(xdr); 6810 return status; 6811 } 6812 6813 /* 6814 * Decode READLINK response 6815 */ 6816 static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp, 6817 struct xdr_stream *xdr, 6818 void *data) 6819 { 6820 struct nfs4_readlink_res *res = data; 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_readlink(xdr, rqstp); 6834 out: 6835 return status; 6836 } 6837 6838 /* 6839 * Decode READDIR response 6840 */ 6841 static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6842 void *data) 6843 { 6844 struct nfs4_readdir_res *res = data; 6845 struct compound_hdr hdr; 6846 int status; 6847 6848 status = decode_compound_hdr(xdr, &hdr); 6849 if (status) 6850 goto out; 6851 status = decode_sequence(xdr, &res->seq_res, rqstp); 6852 if (status) 6853 goto out; 6854 status = decode_putfh(xdr); 6855 if (status) 6856 goto out; 6857 status = decode_readdir(xdr, rqstp, res); 6858 out: 6859 return status; 6860 } 6861 6862 /* 6863 * Decode Read response 6864 */ 6865 static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6866 void *data) 6867 { 6868 struct nfs_pgio_res *res = data; 6869 struct compound_hdr hdr; 6870 int status; 6871 6872 status = decode_compound_hdr(xdr, &hdr); 6873 res->op_status = hdr.status; 6874 if (status) 6875 goto out; 6876 status = decode_sequence(xdr, &res->seq_res, rqstp); 6877 if (status) 6878 goto out; 6879 status = decode_putfh(xdr); 6880 if (status) 6881 goto out; 6882 status = decode_read(xdr, rqstp, res); 6883 if (!status) 6884 status = res->count; 6885 out: 6886 return status; 6887 } 6888 6889 /* 6890 * Decode WRITE response 6891 */ 6892 static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6893 void *data) 6894 { 6895 struct nfs_pgio_res *res = data; 6896 struct compound_hdr hdr; 6897 int status; 6898 6899 status = decode_compound_hdr(xdr, &hdr); 6900 res->op_status = hdr.status; 6901 if (status) 6902 goto out; 6903 status = decode_sequence(xdr, &res->seq_res, rqstp); 6904 if (status) 6905 goto out; 6906 status = decode_putfh(xdr); 6907 if (status) 6908 goto out; 6909 status = decode_write(xdr, res); 6910 if (status) 6911 goto out; 6912 if (res->fattr) 6913 decode_getfattr(xdr, res->fattr, res->server); 6914 if (!status) 6915 status = res->count; 6916 out: 6917 return status; 6918 } 6919 6920 /* 6921 * Decode COMMIT response 6922 */ 6923 static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6924 void *data) 6925 { 6926 struct nfs_commitres *res = data; 6927 struct compound_hdr hdr; 6928 int status; 6929 6930 status = decode_compound_hdr(xdr, &hdr); 6931 res->op_status = hdr.status; 6932 if (status) 6933 goto out; 6934 status = decode_sequence(xdr, &res->seq_res, rqstp); 6935 if (status) 6936 goto out; 6937 status = decode_putfh(xdr); 6938 if (status) 6939 goto out; 6940 status = decode_commit(xdr, res); 6941 out: 6942 return status; 6943 } 6944 6945 /* 6946 * Decode FSINFO response 6947 */ 6948 static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr, 6949 void *data) 6950 { 6951 struct nfs4_fsinfo_res *res = data; 6952 struct compound_hdr hdr; 6953 int status; 6954 6955 status = decode_compound_hdr(xdr, &hdr); 6956 if (!status) 6957 status = decode_sequence(xdr, &res->seq_res, req); 6958 if (!status) 6959 status = decode_putfh(xdr); 6960 if (!status) 6961 status = decode_fsinfo(xdr, res->fsinfo); 6962 return status; 6963 } 6964 6965 /* 6966 * Decode PATHCONF response 6967 */ 6968 static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr, 6969 void *data) 6970 { 6971 struct nfs4_pathconf_res *res = data; 6972 struct compound_hdr hdr; 6973 int status; 6974 6975 status = decode_compound_hdr(xdr, &hdr); 6976 if (!status) 6977 status = decode_sequence(xdr, &res->seq_res, req); 6978 if (!status) 6979 status = decode_putfh(xdr); 6980 if (!status) 6981 status = decode_pathconf(xdr, res->pathconf); 6982 return status; 6983 } 6984 6985 /* 6986 * Decode STATFS response 6987 */ 6988 static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, struct xdr_stream *xdr, 6989 void *data) 6990 { 6991 struct nfs4_statfs_res *res = data; 6992 struct compound_hdr hdr; 6993 int status; 6994 6995 status = decode_compound_hdr(xdr, &hdr); 6996 if (!status) 6997 status = decode_sequence(xdr, &res->seq_res, req); 6998 if (!status) 6999 status = decode_putfh(xdr); 7000 if (!status) 7001 status = decode_statfs(xdr, res->fsstat); 7002 return status; 7003 } 7004 7005 /* 7006 * Decode GETATTR_BITMAP response 7007 */ 7008 static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req, 7009 struct xdr_stream *xdr, 7010 void *data) 7011 { 7012 struct nfs4_server_caps_res *res = data; 7013 struct compound_hdr hdr; 7014 int status; 7015 7016 status = decode_compound_hdr(xdr, &hdr); 7017 if (status) 7018 goto out; 7019 status = decode_sequence(xdr, &res->seq_res, req); 7020 if (status) 7021 goto out; 7022 status = decode_putfh(xdr); 7023 if (status) 7024 goto out; 7025 status = decode_server_caps(xdr, res); 7026 out: 7027 return status; 7028 } 7029 7030 /* 7031 * Decode RENEW response 7032 */ 7033 static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 7034 void *__unused) 7035 { 7036 struct compound_hdr hdr; 7037 int status; 7038 7039 status = decode_compound_hdr(xdr, &hdr); 7040 if (!status) 7041 status = decode_renew(xdr); 7042 return status; 7043 } 7044 7045 /* 7046 * Decode SETCLIENTID response 7047 */ 7048 static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req, 7049 struct xdr_stream *xdr, 7050 void *data) 7051 { 7052 struct nfs4_setclientid_res *res = data; 7053 struct compound_hdr hdr; 7054 int status; 7055 7056 status = decode_compound_hdr(xdr, &hdr); 7057 if (!status) 7058 status = decode_setclientid(xdr, res); 7059 return status; 7060 } 7061 7062 /* 7063 * Decode SETCLIENTID_CONFIRM response 7064 */ 7065 static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req, 7066 struct xdr_stream *xdr, 7067 void *data) 7068 { 7069 struct compound_hdr hdr; 7070 int status; 7071 7072 status = decode_compound_hdr(xdr, &hdr); 7073 if (!status) 7074 status = decode_setclientid_confirm(xdr); 7075 return status; 7076 } 7077 7078 /* 7079 * Decode DELEGRETURN response 7080 */ 7081 static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp, 7082 struct xdr_stream *xdr, 7083 void *data) 7084 { 7085 struct nfs4_delegreturnres *res = data; 7086 struct compound_hdr hdr; 7087 int status; 7088 7089 status = decode_compound_hdr(xdr, &hdr); 7090 if (status) 7091 goto out; 7092 status = decode_sequence(xdr, &res->seq_res, rqstp); 7093 if (status) 7094 goto out; 7095 status = decode_putfh(xdr); 7096 if (status != 0) 7097 goto out; 7098 if (res->lr_res) { 7099 status = decode_layoutreturn(xdr, res->lr_res); 7100 res->lr_ret = status; 7101 if (status) 7102 goto out; 7103 } 7104 if (res->fattr) { 7105 status = decode_getfattr(xdr, res->fattr, res->server); 7106 if (status != 0) 7107 goto out; 7108 } 7109 status = decode_delegreturn(xdr); 7110 out: 7111 return status; 7112 } 7113 7114 /* 7115 * Decode FS_LOCATIONS response 7116 */ 7117 static int nfs4_xdr_dec_fs_locations(struct rpc_rqst *req, 7118 struct xdr_stream *xdr, 7119 void *data) 7120 { 7121 struct nfs4_fs_locations_res *res = data; 7122 struct compound_hdr hdr; 7123 int status; 7124 7125 status = decode_compound_hdr(xdr, &hdr); 7126 if (status) 7127 goto out; 7128 status = decode_sequence(xdr, &res->seq_res, req); 7129 if (status) 7130 goto out; 7131 status = decode_putfh(xdr); 7132 if (status) 7133 goto out; 7134 if (res->migration) { 7135 xdr_enter_page(xdr, PAGE_SIZE); 7136 status = decode_getfattr_generic(xdr, 7137 &res->fs_locations->fattr, 7138 NULL, res->fs_locations, 7139 NULL, res->fs_locations->server); 7140 if (status) 7141 goto out; 7142 if (res->renew) 7143 status = decode_renew(xdr); 7144 } else { 7145 status = decode_lookup(xdr); 7146 if (status) 7147 goto out; 7148 xdr_enter_page(xdr, PAGE_SIZE); 7149 status = decode_getfattr_generic(xdr, 7150 &res->fs_locations->fattr, 7151 NULL, res->fs_locations, 7152 NULL, res->fs_locations->server); 7153 } 7154 out: 7155 return status; 7156 } 7157 7158 /* 7159 * Decode SECINFO response 7160 */ 7161 static int nfs4_xdr_dec_secinfo(struct rpc_rqst *rqstp, 7162 struct xdr_stream *xdr, 7163 void *data) 7164 { 7165 struct nfs4_secinfo_res *res = data; 7166 struct compound_hdr hdr; 7167 int status; 7168 7169 status = decode_compound_hdr(xdr, &hdr); 7170 if (status) 7171 goto out; 7172 status = decode_sequence(xdr, &res->seq_res, rqstp); 7173 if (status) 7174 goto out; 7175 status = decode_putfh(xdr); 7176 if (status) 7177 goto out; 7178 status = decode_secinfo(xdr, res); 7179 out: 7180 return status; 7181 } 7182 7183 /* 7184 * Decode FSID_PRESENT response 7185 */ 7186 static int nfs4_xdr_dec_fsid_present(struct rpc_rqst *rqstp, 7187 struct xdr_stream *xdr, 7188 void *data) 7189 { 7190 struct nfs4_fsid_present_res *res = data; 7191 struct compound_hdr hdr; 7192 int status; 7193 7194 status = decode_compound_hdr(xdr, &hdr); 7195 if (status) 7196 goto out; 7197 status = decode_sequence(xdr, &res->seq_res, rqstp); 7198 if (status) 7199 goto out; 7200 status = decode_putfh(xdr); 7201 if (status) 7202 goto out; 7203 status = decode_getfh(xdr, res->fh); 7204 if (status) 7205 goto out; 7206 if (res->renew) 7207 status = decode_renew(xdr); 7208 out: 7209 return status; 7210 } 7211 7212 #if defined(CONFIG_NFS_V4_1) 7213 /* 7214 * Decode BIND_CONN_TO_SESSION response 7215 */ 7216 static int nfs4_xdr_dec_bind_conn_to_session(struct rpc_rqst *rqstp, 7217 struct xdr_stream *xdr, 7218 void *res) 7219 { 7220 struct compound_hdr hdr; 7221 int status; 7222 7223 status = decode_compound_hdr(xdr, &hdr); 7224 if (!status) 7225 status = decode_bind_conn_to_session(xdr, res); 7226 return status; 7227 } 7228 7229 /* 7230 * Decode EXCHANGE_ID response 7231 */ 7232 static int nfs4_xdr_dec_exchange_id(struct rpc_rqst *rqstp, 7233 struct xdr_stream *xdr, 7234 void *res) 7235 { 7236 struct compound_hdr hdr; 7237 int status; 7238 7239 status = decode_compound_hdr(xdr, &hdr); 7240 if (!status) 7241 status = decode_exchange_id(xdr, res); 7242 return status; 7243 } 7244 7245 /* 7246 * Decode CREATE_SESSION response 7247 */ 7248 static int nfs4_xdr_dec_create_session(struct rpc_rqst *rqstp, 7249 struct xdr_stream *xdr, 7250 void *res) 7251 { 7252 struct compound_hdr hdr; 7253 int status; 7254 7255 status = decode_compound_hdr(xdr, &hdr); 7256 if (!status) 7257 status = decode_create_session(xdr, res); 7258 return status; 7259 } 7260 7261 /* 7262 * Decode DESTROY_SESSION response 7263 */ 7264 static int nfs4_xdr_dec_destroy_session(struct rpc_rqst *rqstp, 7265 struct xdr_stream *xdr, 7266 void *res) 7267 { 7268 struct compound_hdr hdr; 7269 int status; 7270 7271 status = decode_compound_hdr(xdr, &hdr); 7272 if (!status) 7273 status = decode_destroy_session(xdr, res); 7274 return status; 7275 } 7276 7277 /* 7278 * Decode DESTROY_CLIENTID response 7279 */ 7280 static int nfs4_xdr_dec_destroy_clientid(struct rpc_rqst *rqstp, 7281 struct xdr_stream *xdr, 7282 void *res) 7283 { 7284 struct compound_hdr hdr; 7285 int status; 7286 7287 status = decode_compound_hdr(xdr, &hdr); 7288 if (!status) 7289 status = decode_destroy_clientid(xdr, res); 7290 return status; 7291 } 7292 7293 /* 7294 * Decode SEQUENCE response 7295 */ 7296 static int nfs4_xdr_dec_sequence(struct rpc_rqst *rqstp, 7297 struct xdr_stream *xdr, 7298 void *res) 7299 { 7300 struct compound_hdr hdr; 7301 int status; 7302 7303 status = decode_compound_hdr(xdr, &hdr); 7304 if (!status) 7305 status = decode_sequence(xdr, res, rqstp); 7306 return status; 7307 } 7308 7309 /* 7310 * Decode GET_LEASE_TIME response 7311 */ 7312 static int nfs4_xdr_dec_get_lease_time(struct rpc_rqst *rqstp, 7313 struct xdr_stream *xdr, 7314 void *data) 7315 { 7316 struct nfs4_get_lease_time_res *res = data; 7317 struct compound_hdr hdr; 7318 int status; 7319 7320 status = decode_compound_hdr(xdr, &hdr); 7321 if (!status) 7322 status = decode_sequence(xdr, &res->lr_seq_res, rqstp); 7323 if (!status) 7324 status = decode_putrootfh(xdr); 7325 if (!status) 7326 status = decode_fsinfo(xdr, res->lr_fsinfo); 7327 return status; 7328 } 7329 7330 /* 7331 * Decode RECLAIM_COMPLETE response 7332 */ 7333 static int nfs4_xdr_dec_reclaim_complete(struct rpc_rqst *rqstp, 7334 struct xdr_stream *xdr, 7335 void *data) 7336 { 7337 struct nfs41_reclaim_complete_res *res = data; 7338 struct compound_hdr hdr; 7339 int status; 7340 7341 status = decode_compound_hdr(xdr, &hdr); 7342 if (!status) 7343 status = decode_sequence(xdr, &res->seq_res, rqstp); 7344 if (!status) 7345 status = decode_reclaim_complete(xdr, NULL); 7346 return status; 7347 } 7348 7349 /* 7350 * Decode GETDEVINFO response 7351 */ 7352 static int nfs4_xdr_dec_getdeviceinfo(struct rpc_rqst *rqstp, 7353 struct xdr_stream *xdr, 7354 void *data) 7355 { 7356 struct nfs4_getdeviceinfo_res *res = data; 7357 struct compound_hdr hdr; 7358 int status; 7359 7360 status = decode_compound_hdr(xdr, &hdr); 7361 if (status != 0) 7362 goto out; 7363 status = decode_sequence(xdr, &res->seq_res, rqstp); 7364 if (status != 0) 7365 goto out; 7366 status = decode_getdeviceinfo(xdr, res); 7367 out: 7368 return status; 7369 } 7370 7371 /* 7372 * Decode LAYOUTGET response 7373 */ 7374 static int nfs4_xdr_dec_layoutget(struct rpc_rqst *rqstp, 7375 struct xdr_stream *xdr, 7376 void *data) 7377 { 7378 struct nfs4_layoutget_res *res = data; 7379 struct compound_hdr hdr; 7380 int status; 7381 7382 status = decode_compound_hdr(xdr, &hdr); 7383 if (status) 7384 goto out; 7385 status = decode_sequence(xdr, &res->seq_res, rqstp); 7386 if (status) 7387 goto out; 7388 status = decode_putfh(xdr); 7389 if (status) 7390 goto out; 7391 status = decode_layoutget(xdr, rqstp, res); 7392 out: 7393 return status; 7394 } 7395 7396 /* 7397 * Decode LAYOUTRETURN response 7398 */ 7399 static int nfs4_xdr_dec_layoutreturn(struct rpc_rqst *rqstp, 7400 struct xdr_stream *xdr, 7401 void *data) 7402 { 7403 struct nfs4_layoutreturn_res *res = data; 7404 struct compound_hdr hdr; 7405 int status; 7406 7407 status = decode_compound_hdr(xdr, &hdr); 7408 if (status) 7409 goto out; 7410 status = decode_sequence(xdr, &res->seq_res, rqstp); 7411 if (status) 7412 goto out; 7413 status = decode_putfh(xdr); 7414 if (status) 7415 goto out; 7416 status = decode_layoutreturn(xdr, res); 7417 out: 7418 return status; 7419 } 7420 7421 /* 7422 * Decode LAYOUTCOMMIT response 7423 */ 7424 static int nfs4_xdr_dec_layoutcommit(struct rpc_rqst *rqstp, 7425 struct xdr_stream *xdr, 7426 void *data) 7427 { 7428 struct nfs4_layoutcommit_res *res = data; 7429 struct compound_hdr hdr; 7430 int status; 7431 7432 status = decode_compound_hdr(xdr, &hdr); 7433 if (status) 7434 goto out; 7435 status = decode_sequence(xdr, &res->seq_res, rqstp); 7436 if (status) 7437 goto out; 7438 status = decode_putfh(xdr); 7439 if (status) 7440 goto out; 7441 status = decode_layoutcommit(xdr, rqstp, res); 7442 if (status) 7443 goto out; 7444 decode_getfattr(xdr, res->fattr, res->server); 7445 out: 7446 return status; 7447 } 7448 7449 /* 7450 * Decode SECINFO_NO_NAME response 7451 */ 7452 static int nfs4_xdr_dec_secinfo_no_name(struct rpc_rqst *rqstp, 7453 struct xdr_stream *xdr, 7454 void *data) 7455 { 7456 struct nfs4_secinfo_res *res = data; 7457 struct compound_hdr hdr; 7458 int status; 7459 7460 status = decode_compound_hdr(xdr, &hdr); 7461 if (status) 7462 goto out; 7463 status = decode_sequence(xdr, &res->seq_res, rqstp); 7464 if (status) 7465 goto out; 7466 status = decode_putrootfh(xdr); 7467 if (status) 7468 goto out; 7469 status = decode_secinfo_no_name(xdr, res); 7470 out: 7471 return status; 7472 } 7473 7474 /* 7475 * Decode TEST_STATEID response 7476 */ 7477 static int nfs4_xdr_dec_test_stateid(struct rpc_rqst *rqstp, 7478 struct xdr_stream *xdr, 7479 void *data) 7480 { 7481 struct nfs41_test_stateid_res *res = data; 7482 struct compound_hdr hdr; 7483 int status; 7484 7485 status = decode_compound_hdr(xdr, &hdr); 7486 if (status) 7487 goto out; 7488 status = decode_sequence(xdr, &res->seq_res, rqstp); 7489 if (status) 7490 goto out; 7491 status = decode_test_stateid(xdr, res); 7492 out: 7493 return status; 7494 } 7495 7496 /* 7497 * Decode FREE_STATEID response 7498 */ 7499 static int nfs4_xdr_dec_free_stateid(struct rpc_rqst *rqstp, 7500 struct xdr_stream *xdr, 7501 void *data) 7502 { 7503 struct nfs41_free_stateid_res *res = data; 7504 struct compound_hdr hdr; 7505 int status; 7506 7507 status = decode_compound_hdr(xdr, &hdr); 7508 if (status) 7509 goto out; 7510 status = decode_sequence(xdr, &res->seq_res, rqstp); 7511 if (status) 7512 goto out; 7513 status = decode_free_stateid(xdr, res); 7514 out: 7515 return status; 7516 } 7517 #endif /* CONFIG_NFS_V4_1 */ 7518 7519 /** 7520 * nfs4_decode_dirent - Decode a single NFSv4 directory entry stored in 7521 * the local page cache. 7522 * @xdr: XDR stream where entry resides 7523 * @entry: buffer to fill in with entry data 7524 * @plus: boolean indicating whether this should be a readdirplus entry 7525 * 7526 * Returns zero if successful, otherwise a negative errno value is 7527 * returned. 7528 * 7529 * This function is not invoked during READDIR reply decoding, but 7530 * rather whenever an application invokes the getdents(2) system call 7531 * on a directory already in our cache. 7532 */ 7533 int nfs4_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry, 7534 bool plus) 7535 { 7536 unsigned int savep; 7537 uint32_t bitmap[3] = {0}; 7538 uint32_t len; 7539 __be32 *p = xdr_inline_decode(xdr, 4); 7540 if (unlikely(!p)) 7541 goto out_overflow; 7542 if (*p == xdr_zero) { 7543 p = xdr_inline_decode(xdr, 4); 7544 if (unlikely(!p)) 7545 goto out_overflow; 7546 if (*p == xdr_zero) 7547 return -EAGAIN; 7548 entry->eof = 1; 7549 return -EBADCOOKIE; 7550 } 7551 7552 p = xdr_inline_decode(xdr, 12); 7553 if (unlikely(!p)) 7554 goto out_overflow; 7555 entry->prev_cookie = entry->cookie; 7556 p = xdr_decode_hyper(p, &entry->cookie); 7557 entry->len = be32_to_cpup(p); 7558 7559 p = xdr_inline_decode(xdr, entry->len); 7560 if (unlikely(!p)) 7561 goto out_overflow; 7562 entry->name = (const char *) p; 7563 7564 /* 7565 * In case the server doesn't return an inode number, 7566 * we fake one here. (We don't use inode number 0, 7567 * since glibc seems to choke on it...) 7568 */ 7569 entry->ino = 1; 7570 entry->fattr->valid = 0; 7571 7572 if (decode_attr_bitmap(xdr, bitmap) < 0) 7573 goto out_overflow; 7574 7575 if (decode_attr_length(xdr, &len, &savep) < 0) 7576 goto out_overflow; 7577 7578 if (decode_getfattr_attrs(xdr, bitmap, entry->fattr, entry->fh, 7579 NULL, entry->label, entry->server) < 0) 7580 goto out_overflow; 7581 if (entry->fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID) 7582 entry->ino = entry->fattr->mounted_on_fileid; 7583 else if (entry->fattr->valid & NFS_ATTR_FATTR_FILEID) 7584 entry->ino = entry->fattr->fileid; 7585 7586 entry->d_type = DT_UNKNOWN; 7587 if (entry->fattr->valid & NFS_ATTR_FATTR_TYPE) 7588 entry->d_type = nfs_umode_to_dtype(entry->fattr->mode); 7589 7590 return 0; 7591 7592 out_overflow: 7593 print_overflow_msg(__func__, xdr); 7594 return -EAGAIN; 7595 } 7596 7597 /* 7598 * We need to translate between nfs status return values and 7599 * the local errno values which may not be the same. 7600 */ 7601 static struct { 7602 int stat; 7603 int errno; 7604 } nfs_errtbl[] = { 7605 { NFS4_OK, 0 }, 7606 { NFS4ERR_PERM, -EPERM }, 7607 { NFS4ERR_NOENT, -ENOENT }, 7608 { NFS4ERR_IO, -errno_NFSERR_IO}, 7609 { NFS4ERR_NXIO, -ENXIO }, 7610 { NFS4ERR_ACCESS, -EACCES }, 7611 { NFS4ERR_EXIST, -EEXIST }, 7612 { NFS4ERR_XDEV, -EXDEV }, 7613 { NFS4ERR_NOTDIR, -ENOTDIR }, 7614 { NFS4ERR_ISDIR, -EISDIR }, 7615 { NFS4ERR_INVAL, -EINVAL }, 7616 { NFS4ERR_FBIG, -EFBIG }, 7617 { NFS4ERR_NOSPC, -ENOSPC }, 7618 { NFS4ERR_ROFS, -EROFS }, 7619 { NFS4ERR_MLINK, -EMLINK }, 7620 { NFS4ERR_NAMETOOLONG, -ENAMETOOLONG }, 7621 { NFS4ERR_NOTEMPTY, -ENOTEMPTY }, 7622 { NFS4ERR_DQUOT, -EDQUOT }, 7623 { NFS4ERR_STALE, -ESTALE }, 7624 { NFS4ERR_BADHANDLE, -EBADHANDLE }, 7625 { NFS4ERR_BAD_COOKIE, -EBADCOOKIE }, 7626 { NFS4ERR_NOTSUPP, -ENOTSUPP }, 7627 { NFS4ERR_TOOSMALL, -ETOOSMALL }, 7628 { NFS4ERR_SERVERFAULT, -EREMOTEIO }, 7629 { NFS4ERR_BADTYPE, -EBADTYPE }, 7630 { NFS4ERR_LOCKED, -EAGAIN }, 7631 { NFS4ERR_SYMLINK, -ELOOP }, 7632 { NFS4ERR_OP_ILLEGAL, -EOPNOTSUPP }, 7633 { NFS4ERR_DEADLOCK, -EDEADLK }, 7634 { -1, -EIO } 7635 }; 7636 7637 /* 7638 * Convert an NFS error code to a local one. 7639 * This one is used jointly by NFSv2 and NFSv3. 7640 */ 7641 static int 7642 nfs4_stat_to_errno(int stat) 7643 { 7644 int i; 7645 for (i = 0; nfs_errtbl[i].stat != -1; i++) { 7646 if (nfs_errtbl[i].stat == stat) 7647 return nfs_errtbl[i].errno; 7648 } 7649 if (stat <= 10000 || stat > 10100) { 7650 /* The server is looney tunes. */ 7651 return -EREMOTEIO; 7652 } 7653 /* If we cannot translate the error, the recovery routines should 7654 * handle it. 7655 * Note: remaining NFSv4 error codes have values > 10000, so should 7656 * not conflict with native Linux error codes. 7657 */ 7658 return -stat; 7659 } 7660 7661 #ifdef CONFIG_NFS_V4_2 7662 #include "nfs42xdr.c" 7663 #endif /* CONFIG_NFS_V4_2 */ 7664 7665 #define PROC(proc, argtype, restype) \ 7666 [NFSPROC4_CLNT_##proc] = { \ 7667 .p_proc = NFSPROC4_COMPOUND, \ 7668 .p_encode = nfs4_xdr_##argtype, \ 7669 .p_decode = nfs4_xdr_##restype, \ 7670 .p_arglen = NFS4_##argtype##_sz, \ 7671 .p_replen = NFS4_##restype##_sz, \ 7672 .p_statidx = NFSPROC4_CLNT_##proc, \ 7673 .p_name = #proc, \ 7674 } 7675 7676 #define STUB(proc) \ 7677 [NFSPROC4_CLNT_##proc] = { \ 7678 .p_name = #proc, \ 7679 } 7680 7681 #if defined(CONFIG_NFS_V4_1) 7682 #define PROC41(proc, argtype, restype) \ 7683 PROC(proc, argtype, restype) 7684 #else 7685 #define PROC41(proc, argtype, restype) \ 7686 STUB(proc) 7687 #endif 7688 7689 #if defined(CONFIG_NFS_V4_2) 7690 #define PROC42(proc, argtype, restype) \ 7691 PROC(proc, argtype, restype) 7692 #else 7693 #define PROC42(proc, argtype, restype) \ 7694 STUB(proc) 7695 #endif 7696 7697 const struct rpc_procinfo nfs4_procedures[] = { 7698 PROC(READ, enc_read, dec_read), 7699 PROC(WRITE, enc_write, dec_write), 7700 PROC(COMMIT, enc_commit, dec_commit), 7701 PROC(OPEN, enc_open, dec_open), 7702 PROC(OPEN_CONFIRM, enc_open_confirm, dec_open_confirm), 7703 PROC(OPEN_NOATTR, enc_open_noattr, dec_open_noattr), 7704 PROC(OPEN_DOWNGRADE, enc_open_downgrade, dec_open_downgrade), 7705 PROC(CLOSE, enc_close, dec_close), 7706 PROC(SETATTR, enc_setattr, dec_setattr), 7707 PROC(FSINFO, enc_fsinfo, dec_fsinfo), 7708 PROC(RENEW, enc_renew, dec_renew), 7709 PROC(SETCLIENTID, enc_setclientid, dec_setclientid), 7710 PROC(SETCLIENTID_CONFIRM, enc_setclientid_confirm, dec_setclientid_confirm), 7711 PROC(LOCK, enc_lock, dec_lock), 7712 PROC(LOCKT, enc_lockt, dec_lockt), 7713 PROC(LOCKU, enc_locku, dec_locku), 7714 PROC(ACCESS, enc_access, dec_access), 7715 PROC(GETATTR, enc_getattr, dec_getattr), 7716 PROC(LOOKUP, enc_lookup, dec_lookup), 7717 PROC(LOOKUP_ROOT, enc_lookup_root, dec_lookup_root), 7718 PROC(REMOVE, enc_remove, dec_remove), 7719 PROC(RENAME, enc_rename, dec_rename), 7720 PROC(LINK, enc_link, dec_link), 7721 PROC(SYMLINK, enc_symlink, dec_symlink), 7722 PROC(CREATE, enc_create, dec_create), 7723 PROC(PATHCONF, enc_pathconf, dec_pathconf), 7724 PROC(STATFS, enc_statfs, dec_statfs), 7725 PROC(READLINK, enc_readlink, dec_readlink), 7726 PROC(READDIR, enc_readdir, dec_readdir), 7727 PROC(SERVER_CAPS, enc_server_caps, dec_server_caps), 7728 PROC(DELEGRETURN, enc_delegreturn, dec_delegreturn), 7729 PROC(GETACL, enc_getacl, dec_getacl), 7730 PROC(SETACL, enc_setacl, dec_setacl), 7731 PROC(FS_LOCATIONS, enc_fs_locations, dec_fs_locations), 7732 PROC(RELEASE_LOCKOWNER, enc_release_lockowner, dec_release_lockowner), 7733 PROC(SECINFO, enc_secinfo, dec_secinfo), 7734 PROC(FSID_PRESENT, enc_fsid_present, dec_fsid_present), 7735 PROC41(EXCHANGE_ID, enc_exchange_id, dec_exchange_id), 7736 PROC41(CREATE_SESSION, enc_create_session, dec_create_session), 7737 PROC41(DESTROY_SESSION, enc_destroy_session, dec_destroy_session), 7738 PROC41(SEQUENCE, enc_sequence, dec_sequence), 7739 PROC41(GET_LEASE_TIME, enc_get_lease_time, dec_get_lease_time), 7740 PROC41(RECLAIM_COMPLETE,enc_reclaim_complete, dec_reclaim_complete), 7741 PROC41(GETDEVICEINFO, enc_getdeviceinfo, dec_getdeviceinfo), 7742 PROC41(LAYOUTGET, enc_layoutget, dec_layoutget), 7743 PROC41(LAYOUTCOMMIT, enc_layoutcommit, dec_layoutcommit), 7744 PROC41(LAYOUTRETURN, enc_layoutreturn, dec_layoutreturn), 7745 PROC41(SECINFO_NO_NAME, enc_secinfo_no_name, dec_secinfo_no_name), 7746 PROC41(TEST_STATEID, enc_test_stateid, dec_test_stateid), 7747 PROC41(FREE_STATEID, enc_free_stateid, dec_free_stateid), 7748 STUB(GETDEVICELIST), 7749 PROC41(BIND_CONN_TO_SESSION, 7750 enc_bind_conn_to_session, dec_bind_conn_to_session), 7751 PROC41(DESTROY_CLIENTID,enc_destroy_clientid, dec_destroy_clientid), 7752 PROC42(SEEK, enc_seek, dec_seek), 7753 PROC42(ALLOCATE, enc_allocate, dec_allocate), 7754 PROC42(DEALLOCATE, enc_deallocate, dec_deallocate), 7755 PROC42(LAYOUTSTATS, enc_layoutstats, dec_layoutstats), 7756 PROC42(CLONE, enc_clone, dec_clone), 7757 PROC42(COPY, enc_copy, dec_copy), 7758 PROC(LOOKUPP, enc_lookupp, dec_lookupp), 7759 }; 7760 7761 static unsigned int nfs_version4_counts[ARRAY_SIZE(nfs4_procedures)]; 7762 const struct rpc_version nfs_version4 = { 7763 .number = 4, 7764 .nrprocs = ARRAY_SIZE(nfs4_procedures), 7765 .procs = nfs4_procedures, 7766 .counts = nfs_version4_counts, 7767 }; 7768 7769 /* 7770 * Local variables: 7771 * c-basic-offset: 8 7772 * End: 7773 */ 7774