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 56 #include "nfs4_fs.h" 57 #include "nfs4trace.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 struct compound_hdr; 70 static int nfs4_stat_to_errno(int); 71 static void encode_layoutget(struct xdr_stream *xdr, 72 const struct nfs4_layoutget_args *args, 73 struct compound_hdr *hdr); 74 static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req, 75 struct nfs4_layoutget_res *res); 76 77 /* NFSv4 COMPOUND tags are only wanted for debugging purposes */ 78 #ifdef DEBUG 79 #define NFS4_MAXTAGLEN 20 80 #else 81 #define NFS4_MAXTAGLEN 0 82 #endif 83 84 /* lock,open owner id: 85 * we currently use size 2 (u64) out of (NFS4_OPAQUE_LIMIT >> 2) 86 */ 87 #define pagepad_maxsz (1) 88 #define open_owner_id_maxsz (1 + 2 + 1 + 1 + 2) 89 #define lock_owner_id_maxsz (1 + 1 + 4) 90 #define decode_lockowner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ)) 91 #define compound_encode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2)) 92 #define compound_decode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2)) 93 #define op_encode_hdr_maxsz (1) 94 #define op_decode_hdr_maxsz (2) 95 #define encode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE)) 96 #define decode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE)) 97 #define encode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE)) 98 #define decode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE)) 99 #define encode_putfh_maxsz (op_encode_hdr_maxsz + 1 + \ 100 (NFS4_FHSIZE >> 2)) 101 #define decode_putfh_maxsz (op_decode_hdr_maxsz) 102 #define encode_putrootfh_maxsz (op_encode_hdr_maxsz) 103 #define decode_putrootfh_maxsz (op_decode_hdr_maxsz) 104 #define encode_getfh_maxsz (op_encode_hdr_maxsz) 105 #define decode_getfh_maxsz (op_decode_hdr_maxsz + 1 + \ 106 ((3+NFS4_FHSIZE) >> 2)) 107 #define nfs4_fattr_bitmap_maxsz 4 108 #define encode_getattr_maxsz (op_encode_hdr_maxsz + nfs4_fattr_bitmap_maxsz) 109 #define nfstime4_maxsz (3) 110 #define nfs4_name_maxsz (1 + ((3 + NFS4_MAXNAMLEN) >> 2)) 111 #define nfs4_path_maxsz (1 + ((3 + NFS4_MAXPATHLEN) >> 2)) 112 #define nfs4_owner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ)) 113 #define nfs4_group_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ)) 114 #ifdef CONFIG_NFS_V4_SECURITY_LABEL 115 /* PI(4 bytes) + LFS(4 bytes) + 1(for null terminator?) + MAXLABELLEN */ 116 #define nfs4_label_maxsz (4 + 4 + 1 + XDR_QUADLEN(NFS4_MAXLABELLEN)) 117 #else 118 #define nfs4_label_maxsz 0 119 #endif 120 /* We support only one layout type per file system */ 121 #define decode_mdsthreshold_maxsz (1 + 1 + nfs4_fattr_bitmap_maxsz + 1 + 8) 122 /* This is based on getfattr, which uses the most attributes: */ 123 #define nfs4_fattr_value_maxsz (1 + (1 + 2 + 2 + 4 + 2 + 1 + 1 + 2 + 2 + \ 124 3*nfstime4_maxsz + \ 125 nfs4_owner_maxsz + \ 126 nfs4_group_maxsz + nfs4_label_maxsz + \ 127 decode_mdsthreshold_maxsz)) 128 #define nfs4_fattr_maxsz (nfs4_fattr_bitmap_maxsz + \ 129 nfs4_fattr_value_maxsz) 130 #define decode_getattr_maxsz (op_decode_hdr_maxsz + nfs4_fattr_maxsz) 131 #define encode_attrs_maxsz (nfs4_fattr_bitmap_maxsz + \ 132 1 + 2 + 1 + \ 133 nfs4_owner_maxsz + \ 134 nfs4_group_maxsz + \ 135 nfs4_label_maxsz + \ 136 1 + nfstime4_maxsz + \ 137 1 + nfstime4_maxsz) 138 #define encode_savefh_maxsz (op_encode_hdr_maxsz) 139 #define decode_savefh_maxsz (op_decode_hdr_maxsz) 140 #define encode_restorefh_maxsz (op_encode_hdr_maxsz) 141 #define decode_restorefh_maxsz (op_decode_hdr_maxsz) 142 #define encode_fsinfo_maxsz (encode_getattr_maxsz) 143 /* The 5 accounts for the PNFS attributes, and assumes that at most three 144 * layout types will be returned. 145 */ 146 #define decode_fsinfo_maxsz (op_decode_hdr_maxsz + \ 147 nfs4_fattr_bitmap_maxsz + 1 + \ 148 1 /* lease time */ + \ 149 2 /* max filesize */ + \ 150 2 /* max read */ + \ 151 2 /* max write */ + \ 152 nfstime4_maxsz /* time delta */ + \ 153 5 /* fs layout types */ + \ 154 1 /* layout blksize */ + \ 155 1 /* clone blksize */ + \ 156 1 /* change attr type */ + \ 157 1 /* xattr support */) 158 #define encode_renew_maxsz (op_encode_hdr_maxsz + 3) 159 #define decode_renew_maxsz (op_decode_hdr_maxsz) 160 #define encode_setclientid_maxsz \ 161 (op_encode_hdr_maxsz + \ 162 XDR_QUADLEN(NFS4_VERIFIER_SIZE) + \ 163 /* client name */ \ 164 1 + XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \ 165 1 /* sc_prog */ + \ 166 1 + XDR_QUADLEN(RPCBIND_MAXNETIDLEN) + \ 167 1 + XDR_QUADLEN(RPCBIND_MAXUADDRLEN) + \ 168 1) /* sc_cb_ident */ 169 #define decode_setclientid_maxsz \ 170 (op_decode_hdr_maxsz + \ 171 2 /* clientid */ + \ 172 XDR_QUADLEN(NFS4_VERIFIER_SIZE) + \ 173 1 + XDR_QUADLEN(RPCBIND_MAXNETIDLEN) + \ 174 1 + XDR_QUADLEN(RPCBIND_MAXUADDRLEN)) 175 #define encode_setclientid_confirm_maxsz \ 176 (op_encode_hdr_maxsz + \ 177 3 + (NFS4_VERIFIER_SIZE >> 2)) 178 #define decode_setclientid_confirm_maxsz \ 179 (op_decode_hdr_maxsz) 180 #define encode_lookup_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz) 181 #define decode_lookup_maxsz (op_decode_hdr_maxsz) 182 #define encode_lookupp_maxsz (op_encode_hdr_maxsz) 183 #define decode_lookupp_maxsz (op_decode_hdr_maxsz) 184 #define encode_share_access_maxsz \ 185 (2) 186 #define encode_createmode_maxsz (1 + encode_attrs_maxsz + encode_verifier_maxsz) 187 #define encode_opentype_maxsz (1 + encode_createmode_maxsz) 188 #define encode_claim_null_maxsz (1 + nfs4_name_maxsz) 189 #define encode_open_maxsz (op_encode_hdr_maxsz + \ 190 2 + encode_share_access_maxsz + 2 + \ 191 open_owner_id_maxsz + \ 192 encode_opentype_maxsz + \ 193 encode_claim_null_maxsz) 194 #define decode_space_limit_maxsz (3) 195 #define decode_ace_maxsz (3 + nfs4_owner_maxsz) 196 #define decode_delegation_maxsz (1 + decode_stateid_maxsz + 1 + \ 197 decode_space_limit_maxsz + \ 198 decode_ace_maxsz) 199 #define decode_change_info_maxsz (5) 200 #define decode_open_maxsz (op_decode_hdr_maxsz + \ 201 decode_stateid_maxsz + \ 202 decode_change_info_maxsz + 1 + \ 203 nfs4_fattr_bitmap_maxsz + \ 204 decode_delegation_maxsz) 205 #define encode_open_confirm_maxsz \ 206 (op_encode_hdr_maxsz + \ 207 encode_stateid_maxsz + 1) 208 #define decode_open_confirm_maxsz \ 209 (op_decode_hdr_maxsz + \ 210 decode_stateid_maxsz) 211 #define encode_open_downgrade_maxsz \ 212 (op_encode_hdr_maxsz + \ 213 encode_stateid_maxsz + 1 + \ 214 encode_share_access_maxsz) 215 #define decode_open_downgrade_maxsz \ 216 (op_decode_hdr_maxsz + \ 217 decode_stateid_maxsz) 218 #define encode_close_maxsz (op_encode_hdr_maxsz + \ 219 1 + encode_stateid_maxsz) 220 #define decode_close_maxsz (op_decode_hdr_maxsz + \ 221 decode_stateid_maxsz) 222 #define encode_setattr_maxsz (op_encode_hdr_maxsz + \ 223 encode_stateid_maxsz + \ 224 encode_attrs_maxsz) 225 #define decode_setattr_maxsz (op_decode_hdr_maxsz + \ 226 nfs4_fattr_bitmap_maxsz) 227 #define encode_read_maxsz (op_encode_hdr_maxsz + \ 228 encode_stateid_maxsz + 3) 229 #define decode_read_maxsz (op_decode_hdr_maxsz + 2 + pagepad_maxsz) 230 #define encode_readdir_maxsz (op_encode_hdr_maxsz + \ 231 2 + encode_verifier_maxsz + 5 + \ 232 nfs4_label_maxsz) 233 #define decode_readdir_maxsz (op_decode_hdr_maxsz + \ 234 decode_verifier_maxsz + pagepad_maxsz) 235 #define encode_readlink_maxsz (op_encode_hdr_maxsz) 236 #define decode_readlink_maxsz (op_decode_hdr_maxsz + 1 + pagepad_maxsz) 237 #define encode_write_maxsz (op_encode_hdr_maxsz + \ 238 encode_stateid_maxsz + 4) 239 #define decode_write_maxsz (op_decode_hdr_maxsz + \ 240 2 + decode_verifier_maxsz) 241 #define encode_commit_maxsz (op_encode_hdr_maxsz + 3) 242 #define decode_commit_maxsz (op_decode_hdr_maxsz + \ 243 decode_verifier_maxsz) 244 #define encode_remove_maxsz (op_encode_hdr_maxsz + \ 245 nfs4_name_maxsz) 246 #define decode_remove_maxsz (op_decode_hdr_maxsz + \ 247 decode_change_info_maxsz) 248 #define encode_rename_maxsz (op_encode_hdr_maxsz + \ 249 2 * nfs4_name_maxsz) 250 #define decode_rename_maxsz (op_decode_hdr_maxsz + \ 251 decode_change_info_maxsz + \ 252 decode_change_info_maxsz) 253 #define encode_link_maxsz (op_encode_hdr_maxsz + \ 254 nfs4_name_maxsz) 255 #define decode_link_maxsz (op_decode_hdr_maxsz + decode_change_info_maxsz) 256 #define encode_lockowner_maxsz (7) 257 #define encode_lock_maxsz (op_encode_hdr_maxsz + \ 258 7 + \ 259 1 + encode_stateid_maxsz + 1 + \ 260 encode_lockowner_maxsz) 261 #define decode_lock_denied_maxsz \ 262 (8 + decode_lockowner_maxsz) 263 #define decode_lock_maxsz (op_decode_hdr_maxsz + \ 264 decode_lock_denied_maxsz) 265 #define encode_lockt_maxsz (op_encode_hdr_maxsz + 5 + \ 266 encode_lockowner_maxsz) 267 #define decode_lockt_maxsz (op_decode_hdr_maxsz + \ 268 decode_lock_denied_maxsz) 269 #define encode_locku_maxsz (op_encode_hdr_maxsz + 3 + \ 270 encode_stateid_maxsz + \ 271 4) 272 #define decode_locku_maxsz (op_decode_hdr_maxsz + \ 273 decode_stateid_maxsz) 274 #define encode_release_lockowner_maxsz \ 275 (op_encode_hdr_maxsz + \ 276 encode_lockowner_maxsz) 277 #define decode_release_lockowner_maxsz \ 278 (op_decode_hdr_maxsz) 279 #define encode_access_maxsz (op_encode_hdr_maxsz + 1) 280 #define decode_access_maxsz (op_decode_hdr_maxsz + 2) 281 #define encode_symlink_maxsz (op_encode_hdr_maxsz + \ 282 1 + nfs4_name_maxsz + \ 283 1 + \ 284 nfs4_fattr_maxsz) 285 #define decode_symlink_maxsz (op_decode_hdr_maxsz + 8) 286 #define encode_create_maxsz (op_encode_hdr_maxsz + \ 287 1 + 2 + nfs4_name_maxsz + \ 288 encode_attrs_maxsz) 289 #define decode_create_maxsz (op_decode_hdr_maxsz + \ 290 decode_change_info_maxsz + \ 291 nfs4_fattr_bitmap_maxsz) 292 #define encode_statfs_maxsz (encode_getattr_maxsz) 293 #define decode_statfs_maxsz (decode_getattr_maxsz) 294 #define encode_delegreturn_maxsz (op_encode_hdr_maxsz + 4) 295 #define decode_delegreturn_maxsz (op_decode_hdr_maxsz) 296 #define encode_getacl_maxsz (encode_getattr_maxsz) 297 #define decode_getacl_maxsz (op_decode_hdr_maxsz + \ 298 nfs4_fattr_bitmap_maxsz + 1 + pagepad_maxsz) 299 #define encode_setacl_maxsz (op_encode_hdr_maxsz + \ 300 encode_stateid_maxsz + 3) 301 #define decode_setacl_maxsz (decode_setattr_maxsz) 302 #define encode_fs_locations_maxsz \ 303 (encode_getattr_maxsz) 304 #define decode_fs_locations_maxsz \ 305 (pagepad_maxsz) 306 #define encode_secinfo_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz) 307 #define decode_secinfo_maxsz (op_decode_hdr_maxsz + 1 + ((NFS_MAX_SECFLAVORS * (16 + GSS_OID_MAX_LEN)) / 4)) 308 309 #if defined(CONFIG_NFS_V4_1) 310 #define NFS4_MAX_MACHINE_NAME_LEN (64) 311 #define IMPL_NAME_LIMIT (sizeof(utsname()->sysname) + sizeof(utsname()->release) + \ 312 sizeof(utsname()->version) + sizeof(utsname()->machine) + 8) 313 314 #define encode_exchange_id_maxsz (op_encode_hdr_maxsz + \ 315 encode_verifier_maxsz + \ 316 1 /* co_ownerid.len */ + \ 317 /* eia_clientowner */ \ 318 1 + XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \ 319 1 /* flags */ + \ 320 1 /* spa_how */ + \ 321 /* max is SP4_MACH_CRED (for now) */ + \ 322 1 + NFS4_OP_MAP_NUM_WORDS + \ 323 1 + NFS4_OP_MAP_NUM_WORDS + \ 324 1 /* implementation id array of size 1 */ + \ 325 1 /* nii_domain */ + \ 326 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \ 327 1 /* nii_name */ + \ 328 XDR_QUADLEN(IMPL_NAME_LIMIT) + \ 329 3 /* nii_date */) 330 #define decode_exchange_id_maxsz (op_decode_hdr_maxsz + \ 331 2 /* eir_clientid */ + \ 332 1 /* eir_sequenceid */ + \ 333 1 /* eir_flags */ + \ 334 1 /* spr_how */ + \ 335 /* max is SP4_MACH_CRED (for now) */ + \ 336 1 + NFS4_OP_MAP_NUM_WORDS + \ 337 1 + NFS4_OP_MAP_NUM_WORDS + \ 338 2 /* eir_server_owner.so_minor_id */ + \ 339 /* eir_server_owner.so_major_id<> */ \ 340 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \ 341 /* eir_server_scope<> */ \ 342 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \ 343 1 /* eir_server_impl_id array length */ + \ 344 1 /* nii_domain */ + \ 345 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \ 346 1 /* nii_name */ + \ 347 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \ 348 3 /* nii_date */) 349 #define encode_channel_attrs_maxsz (6 + 1 /* ca_rdma_ird.len (0) */) 350 #define decode_channel_attrs_maxsz (6 + \ 351 1 /* ca_rdma_ird.len */ + \ 352 1 /* ca_rdma_ird */) 353 #define encode_create_session_maxsz (op_encode_hdr_maxsz + \ 354 2 /* csa_clientid */ + \ 355 1 /* csa_sequence */ + \ 356 1 /* csa_flags */ + \ 357 encode_channel_attrs_maxsz + \ 358 encode_channel_attrs_maxsz + \ 359 1 /* csa_cb_program */ + \ 360 1 /* csa_sec_parms.len (1) */ + \ 361 1 /* cb_secflavor (AUTH_SYS) */ + \ 362 1 /* stamp */ + \ 363 1 /* machinename.len */ + \ 364 XDR_QUADLEN(NFS4_MAX_MACHINE_NAME_LEN) + \ 365 1 /* uid */ + \ 366 1 /* gid */ + \ 367 1 /* gids.len (0) */) 368 #define decode_create_session_maxsz (op_decode_hdr_maxsz + \ 369 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \ 370 1 /* csr_sequence */ + \ 371 1 /* csr_flags */ + \ 372 decode_channel_attrs_maxsz + \ 373 decode_channel_attrs_maxsz) 374 #define encode_bind_conn_to_session_maxsz (op_encode_hdr_maxsz + \ 375 /* bctsa_sessid */ \ 376 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \ 377 1 /* bctsa_dir */ + \ 378 1 /* bctsa_use_conn_in_rdma_mode */) 379 #define decode_bind_conn_to_session_maxsz (op_decode_hdr_maxsz + \ 380 /* bctsr_sessid */ \ 381 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \ 382 1 /* bctsr_dir */ + \ 383 1 /* bctsr_use_conn_in_rdma_mode */) 384 #define encode_destroy_session_maxsz (op_encode_hdr_maxsz + 4) 385 #define decode_destroy_session_maxsz (op_decode_hdr_maxsz) 386 #define encode_destroy_clientid_maxsz (op_encode_hdr_maxsz + 2) 387 #define decode_destroy_clientid_maxsz (op_decode_hdr_maxsz) 388 #define encode_sequence_maxsz (op_encode_hdr_maxsz + \ 389 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 4) 390 #define decode_sequence_maxsz (op_decode_hdr_maxsz + \ 391 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 5) 392 #define encode_reclaim_complete_maxsz (op_encode_hdr_maxsz + 4) 393 #define decode_reclaim_complete_maxsz (op_decode_hdr_maxsz + 4) 394 #define encode_getdeviceinfo_maxsz (op_encode_hdr_maxsz + \ 395 XDR_QUADLEN(NFS4_DEVICEID4_SIZE) + \ 396 1 /* layout type */ + \ 397 1 /* maxcount */ + \ 398 1 /* bitmap size */ + \ 399 1 /* notification bitmap length */ + \ 400 1 /* notification bitmap, word 0 */) 401 #define decode_getdeviceinfo_maxsz (op_decode_hdr_maxsz + \ 402 1 /* layout type */ + \ 403 1 /* opaque devaddr4 length */ + \ 404 /* devaddr4 payload is read into page */ \ 405 1 /* notification bitmap length */ + \ 406 1 /* notification bitmap, word 0 */ + \ 407 pagepad_maxsz /* possible XDR padding */) 408 #define encode_layoutget_maxsz (op_encode_hdr_maxsz + 10 + \ 409 encode_stateid_maxsz) 410 #define decode_layoutget_maxsz (op_decode_hdr_maxsz + 8 + \ 411 decode_stateid_maxsz + \ 412 XDR_QUADLEN(PNFS_LAYOUT_MAXSIZE) + \ 413 pagepad_maxsz) 414 #define encode_layoutcommit_maxsz (op_encode_hdr_maxsz + \ 415 2 /* offset */ + \ 416 2 /* length */ + \ 417 1 /* reclaim */ + \ 418 encode_stateid_maxsz + \ 419 1 /* new offset (true) */ + \ 420 2 /* last byte written */ + \ 421 1 /* nt_timechanged (false) */ + \ 422 1 /* layoutupdate4 layout type */ + \ 423 1 /* layoutupdate4 opaqueue len */) 424 /* the actual content of layoutupdate4 should 425 be allocated by drivers and spliced in 426 using xdr_write_pages */ 427 #define decode_layoutcommit_maxsz (op_decode_hdr_maxsz + 3) 428 #define encode_layoutreturn_maxsz (8 + op_encode_hdr_maxsz + \ 429 encode_stateid_maxsz + \ 430 1 + \ 431 XDR_QUADLEN(NFS4_OPAQUE_LIMIT)) 432 #define decode_layoutreturn_maxsz (op_decode_hdr_maxsz + \ 433 1 + decode_stateid_maxsz) 434 #define encode_secinfo_no_name_maxsz (op_encode_hdr_maxsz + 1) 435 #define decode_secinfo_no_name_maxsz decode_secinfo_maxsz 436 #define encode_test_stateid_maxsz (op_encode_hdr_maxsz + 2 + \ 437 XDR_QUADLEN(NFS4_STATEID_SIZE)) 438 #define decode_test_stateid_maxsz (op_decode_hdr_maxsz + 2 + 1) 439 #define encode_free_stateid_maxsz (op_encode_hdr_maxsz + 1 + \ 440 XDR_QUADLEN(NFS4_STATEID_SIZE)) 441 #define decode_free_stateid_maxsz (op_decode_hdr_maxsz) 442 #else /* CONFIG_NFS_V4_1 */ 443 #define encode_sequence_maxsz 0 444 #define decode_sequence_maxsz 0 445 #define encode_layoutreturn_maxsz 0 446 #define decode_layoutreturn_maxsz 0 447 #define encode_layoutget_maxsz 0 448 #define decode_layoutget_maxsz 0 449 #endif /* CONFIG_NFS_V4_1 */ 450 451 #define NFS4_enc_compound_sz (1024) /* XXX: large enough? */ 452 #define NFS4_dec_compound_sz (1024) /* XXX: large enough? */ 453 #define NFS4_enc_read_sz (compound_encode_hdr_maxsz + \ 454 encode_sequence_maxsz + \ 455 encode_putfh_maxsz + \ 456 encode_read_maxsz) 457 #define NFS4_dec_read_sz (compound_decode_hdr_maxsz + \ 458 decode_sequence_maxsz + \ 459 decode_putfh_maxsz + \ 460 decode_read_maxsz) 461 #define NFS4_enc_readlink_sz (compound_encode_hdr_maxsz + \ 462 encode_sequence_maxsz + \ 463 encode_putfh_maxsz + \ 464 encode_readlink_maxsz) 465 #define NFS4_dec_readlink_sz (compound_decode_hdr_maxsz + \ 466 decode_sequence_maxsz + \ 467 decode_putfh_maxsz + \ 468 decode_readlink_maxsz) 469 #define NFS4_enc_readdir_sz (compound_encode_hdr_maxsz + \ 470 encode_sequence_maxsz + \ 471 encode_putfh_maxsz + \ 472 encode_readdir_maxsz) 473 #define NFS4_dec_readdir_sz (compound_decode_hdr_maxsz + \ 474 decode_sequence_maxsz + \ 475 decode_putfh_maxsz + \ 476 decode_readdir_maxsz) 477 #define NFS4_enc_write_sz (compound_encode_hdr_maxsz + \ 478 encode_sequence_maxsz + \ 479 encode_putfh_maxsz + \ 480 encode_write_maxsz + \ 481 encode_getattr_maxsz) 482 #define NFS4_dec_write_sz (compound_decode_hdr_maxsz + \ 483 decode_sequence_maxsz + \ 484 decode_putfh_maxsz + \ 485 decode_write_maxsz + \ 486 decode_getattr_maxsz) 487 #define NFS4_enc_commit_sz (compound_encode_hdr_maxsz + \ 488 encode_sequence_maxsz + \ 489 encode_putfh_maxsz + \ 490 encode_commit_maxsz) 491 #define NFS4_dec_commit_sz (compound_decode_hdr_maxsz + \ 492 decode_sequence_maxsz + \ 493 decode_putfh_maxsz + \ 494 decode_commit_maxsz) 495 #define NFS4_enc_open_sz (compound_encode_hdr_maxsz + \ 496 encode_sequence_maxsz + \ 497 encode_putfh_maxsz + \ 498 encode_open_maxsz + \ 499 encode_access_maxsz + \ 500 encode_getfh_maxsz + \ 501 encode_getattr_maxsz + \ 502 encode_layoutget_maxsz) 503 #define NFS4_dec_open_sz (compound_decode_hdr_maxsz + \ 504 decode_sequence_maxsz + \ 505 decode_putfh_maxsz + \ 506 decode_open_maxsz + \ 507 decode_access_maxsz + \ 508 decode_getfh_maxsz + \ 509 decode_getattr_maxsz + \ 510 decode_layoutget_maxsz) 511 #define NFS4_enc_open_confirm_sz \ 512 (compound_encode_hdr_maxsz + \ 513 encode_putfh_maxsz + \ 514 encode_open_confirm_maxsz) 515 #define NFS4_dec_open_confirm_sz \ 516 (compound_decode_hdr_maxsz + \ 517 decode_putfh_maxsz + \ 518 decode_open_confirm_maxsz) 519 #define NFS4_enc_open_noattr_sz (compound_encode_hdr_maxsz + \ 520 encode_sequence_maxsz + \ 521 encode_putfh_maxsz + \ 522 encode_open_maxsz + \ 523 encode_access_maxsz + \ 524 encode_getattr_maxsz + \ 525 encode_layoutget_maxsz) 526 #define NFS4_dec_open_noattr_sz (compound_decode_hdr_maxsz + \ 527 decode_sequence_maxsz + \ 528 decode_putfh_maxsz + \ 529 decode_open_maxsz + \ 530 decode_access_maxsz + \ 531 decode_getattr_maxsz + \ 532 decode_layoutget_maxsz) 533 #define NFS4_enc_open_downgrade_sz \ 534 (compound_encode_hdr_maxsz + \ 535 encode_sequence_maxsz + \ 536 encode_putfh_maxsz + \ 537 encode_layoutreturn_maxsz + \ 538 encode_open_downgrade_maxsz) 539 #define NFS4_dec_open_downgrade_sz \ 540 (compound_decode_hdr_maxsz + \ 541 decode_sequence_maxsz + \ 542 decode_putfh_maxsz + \ 543 decode_layoutreturn_maxsz + \ 544 decode_open_downgrade_maxsz) 545 #define NFS4_enc_close_sz (compound_encode_hdr_maxsz + \ 546 encode_sequence_maxsz + \ 547 encode_putfh_maxsz + \ 548 encode_layoutreturn_maxsz + \ 549 encode_close_maxsz + \ 550 encode_getattr_maxsz) 551 #define NFS4_dec_close_sz (compound_decode_hdr_maxsz + \ 552 decode_sequence_maxsz + \ 553 decode_putfh_maxsz + \ 554 decode_layoutreturn_maxsz + \ 555 decode_close_maxsz + \ 556 decode_getattr_maxsz) 557 #define NFS4_enc_setattr_sz (compound_encode_hdr_maxsz + \ 558 encode_sequence_maxsz + \ 559 encode_putfh_maxsz + \ 560 encode_setattr_maxsz + \ 561 encode_getattr_maxsz) 562 #define NFS4_dec_setattr_sz (compound_decode_hdr_maxsz + \ 563 decode_sequence_maxsz + \ 564 decode_putfh_maxsz + \ 565 decode_setattr_maxsz + \ 566 decode_getattr_maxsz) 567 #define NFS4_enc_fsinfo_sz (compound_encode_hdr_maxsz + \ 568 encode_sequence_maxsz + \ 569 encode_putfh_maxsz + \ 570 encode_fsinfo_maxsz) 571 #define NFS4_dec_fsinfo_sz (compound_decode_hdr_maxsz + \ 572 decode_sequence_maxsz + \ 573 decode_putfh_maxsz + \ 574 decode_fsinfo_maxsz) 575 #define NFS4_enc_renew_sz (compound_encode_hdr_maxsz + \ 576 encode_renew_maxsz) 577 #define NFS4_dec_renew_sz (compound_decode_hdr_maxsz + \ 578 decode_renew_maxsz) 579 #define NFS4_enc_setclientid_sz (compound_encode_hdr_maxsz + \ 580 encode_setclientid_maxsz) 581 #define NFS4_dec_setclientid_sz (compound_decode_hdr_maxsz + \ 582 decode_setclientid_maxsz) 583 #define NFS4_enc_setclientid_confirm_sz \ 584 (compound_encode_hdr_maxsz + \ 585 encode_setclientid_confirm_maxsz) 586 #define NFS4_dec_setclientid_confirm_sz \ 587 (compound_decode_hdr_maxsz + \ 588 decode_setclientid_confirm_maxsz) 589 #define NFS4_enc_lock_sz (compound_encode_hdr_maxsz + \ 590 encode_sequence_maxsz + \ 591 encode_putfh_maxsz + \ 592 encode_lock_maxsz) 593 #define NFS4_dec_lock_sz (compound_decode_hdr_maxsz + \ 594 decode_sequence_maxsz + \ 595 decode_putfh_maxsz + \ 596 decode_lock_maxsz) 597 #define NFS4_enc_lockt_sz (compound_encode_hdr_maxsz + \ 598 encode_sequence_maxsz + \ 599 encode_putfh_maxsz + \ 600 encode_lockt_maxsz) 601 #define NFS4_dec_lockt_sz (compound_decode_hdr_maxsz + \ 602 decode_sequence_maxsz + \ 603 decode_putfh_maxsz + \ 604 decode_lockt_maxsz) 605 #define NFS4_enc_locku_sz (compound_encode_hdr_maxsz + \ 606 encode_sequence_maxsz + \ 607 encode_putfh_maxsz + \ 608 encode_locku_maxsz) 609 #define NFS4_dec_locku_sz (compound_decode_hdr_maxsz + \ 610 decode_sequence_maxsz + \ 611 decode_putfh_maxsz + \ 612 decode_locku_maxsz) 613 #define NFS4_enc_release_lockowner_sz \ 614 (compound_encode_hdr_maxsz + \ 615 encode_lockowner_maxsz) 616 #define NFS4_dec_release_lockowner_sz \ 617 (compound_decode_hdr_maxsz + \ 618 decode_lockowner_maxsz) 619 #define NFS4_enc_access_sz (compound_encode_hdr_maxsz + \ 620 encode_sequence_maxsz + \ 621 encode_putfh_maxsz + \ 622 encode_access_maxsz + \ 623 encode_getattr_maxsz) 624 #define NFS4_dec_access_sz (compound_decode_hdr_maxsz + \ 625 decode_sequence_maxsz + \ 626 decode_putfh_maxsz + \ 627 decode_access_maxsz + \ 628 decode_getattr_maxsz) 629 #define NFS4_enc_getattr_sz (compound_encode_hdr_maxsz + \ 630 encode_sequence_maxsz + \ 631 encode_putfh_maxsz + \ 632 encode_getattr_maxsz + \ 633 encode_renew_maxsz) 634 #define NFS4_dec_getattr_sz (compound_decode_hdr_maxsz + \ 635 decode_sequence_maxsz + \ 636 decode_putfh_maxsz + \ 637 decode_getattr_maxsz + \ 638 decode_renew_maxsz) 639 #define NFS4_enc_lookup_sz (compound_encode_hdr_maxsz + \ 640 encode_sequence_maxsz + \ 641 encode_putfh_maxsz + \ 642 encode_lookup_maxsz + \ 643 encode_getattr_maxsz + \ 644 encode_getfh_maxsz) 645 #define NFS4_dec_lookup_sz (compound_decode_hdr_maxsz + \ 646 decode_sequence_maxsz + \ 647 decode_putfh_maxsz + \ 648 decode_lookup_maxsz + \ 649 decode_getattr_maxsz + \ 650 decode_getfh_maxsz) 651 #define NFS4_enc_lookupp_sz (compound_encode_hdr_maxsz + \ 652 encode_sequence_maxsz + \ 653 encode_putfh_maxsz + \ 654 encode_lookupp_maxsz + \ 655 encode_getattr_maxsz + \ 656 encode_getfh_maxsz) 657 #define NFS4_dec_lookupp_sz (compound_decode_hdr_maxsz + \ 658 decode_sequence_maxsz + \ 659 decode_putfh_maxsz + \ 660 decode_lookupp_maxsz + \ 661 decode_getattr_maxsz + \ 662 decode_getfh_maxsz) 663 #define NFS4_enc_lookup_root_sz (compound_encode_hdr_maxsz + \ 664 encode_sequence_maxsz + \ 665 encode_putrootfh_maxsz + \ 666 encode_getattr_maxsz + \ 667 encode_getfh_maxsz) 668 #define NFS4_dec_lookup_root_sz (compound_decode_hdr_maxsz + \ 669 decode_sequence_maxsz + \ 670 decode_putrootfh_maxsz + \ 671 decode_getattr_maxsz + \ 672 decode_getfh_maxsz) 673 #define NFS4_enc_remove_sz (compound_encode_hdr_maxsz + \ 674 encode_sequence_maxsz + \ 675 encode_putfh_maxsz + \ 676 encode_remove_maxsz) 677 #define NFS4_dec_remove_sz (compound_decode_hdr_maxsz + \ 678 decode_sequence_maxsz + \ 679 decode_putfh_maxsz + \ 680 decode_remove_maxsz) 681 #define NFS4_enc_rename_sz (compound_encode_hdr_maxsz + \ 682 encode_sequence_maxsz + \ 683 encode_putfh_maxsz + \ 684 encode_savefh_maxsz + \ 685 encode_putfh_maxsz + \ 686 encode_rename_maxsz) 687 #define NFS4_dec_rename_sz (compound_decode_hdr_maxsz + \ 688 decode_sequence_maxsz + \ 689 decode_putfh_maxsz + \ 690 decode_savefh_maxsz + \ 691 decode_putfh_maxsz + \ 692 decode_rename_maxsz) 693 #define NFS4_enc_link_sz (compound_encode_hdr_maxsz + \ 694 encode_sequence_maxsz + \ 695 encode_putfh_maxsz + \ 696 encode_savefh_maxsz + \ 697 encode_putfh_maxsz + \ 698 encode_link_maxsz + \ 699 encode_restorefh_maxsz + \ 700 encode_getattr_maxsz) 701 #define NFS4_dec_link_sz (compound_decode_hdr_maxsz + \ 702 decode_sequence_maxsz + \ 703 decode_putfh_maxsz + \ 704 decode_savefh_maxsz + \ 705 decode_putfh_maxsz + \ 706 decode_link_maxsz + \ 707 decode_restorefh_maxsz + \ 708 decode_getattr_maxsz) 709 #define NFS4_enc_symlink_sz (compound_encode_hdr_maxsz + \ 710 encode_sequence_maxsz + \ 711 encode_putfh_maxsz + \ 712 encode_symlink_maxsz + \ 713 encode_getattr_maxsz + \ 714 encode_getfh_maxsz) 715 #define NFS4_dec_symlink_sz (compound_decode_hdr_maxsz + \ 716 decode_sequence_maxsz + \ 717 decode_putfh_maxsz + \ 718 decode_symlink_maxsz + \ 719 decode_getattr_maxsz + \ 720 decode_getfh_maxsz) 721 #define NFS4_enc_create_sz (compound_encode_hdr_maxsz + \ 722 encode_sequence_maxsz + \ 723 encode_putfh_maxsz + \ 724 encode_create_maxsz + \ 725 encode_getfh_maxsz + \ 726 encode_getattr_maxsz) 727 #define NFS4_dec_create_sz (compound_decode_hdr_maxsz + \ 728 decode_sequence_maxsz + \ 729 decode_putfh_maxsz + \ 730 decode_create_maxsz + \ 731 decode_getfh_maxsz + \ 732 decode_getattr_maxsz) 733 #define NFS4_enc_pathconf_sz (compound_encode_hdr_maxsz + \ 734 encode_sequence_maxsz + \ 735 encode_putfh_maxsz + \ 736 encode_getattr_maxsz) 737 #define NFS4_dec_pathconf_sz (compound_decode_hdr_maxsz + \ 738 decode_sequence_maxsz + \ 739 decode_putfh_maxsz + \ 740 decode_getattr_maxsz) 741 #define NFS4_enc_statfs_sz (compound_encode_hdr_maxsz + \ 742 encode_sequence_maxsz + \ 743 encode_putfh_maxsz + \ 744 encode_statfs_maxsz) 745 #define NFS4_dec_statfs_sz (compound_decode_hdr_maxsz + \ 746 decode_sequence_maxsz + \ 747 decode_putfh_maxsz + \ 748 decode_statfs_maxsz) 749 #define NFS4_enc_server_caps_sz (compound_encode_hdr_maxsz + \ 750 encode_sequence_maxsz + \ 751 encode_putfh_maxsz + \ 752 encode_getattr_maxsz) 753 #define NFS4_dec_server_caps_sz (compound_decode_hdr_maxsz + \ 754 decode_sequence_maxsz + \ 755 decode_putfh_maxsz + \ 756 decode_getattr_maxsz) 757 #define NFS4_enc_delegreturn_sz (compound_encode_hdr_maxsz + \ 758 encode_sequence_maxsz + \ 759 encode_putfh_maxsz + \ 760 encode_layoutreturn_maxsz + \ 761 encode_delegreturn_maxsz + \ 762 encode_getattr_maxsz) 763 #define NFS4_dec_delegreturn_sz (compound_decode_hdr_maxsz + \ 764 decode_sequence_maxsz + \ 765 decode_putfh_maxsz + \ 766 decode_layoutreturn_maxsz + \ 767 decode_delegreturn_maxsz + \ 768 decode_getattr_maxsz) 769 #define NFS4_enc_getacl_sz (compound_encode_hdr_maxsz + \ 770 encode_sequence_maxsz + \ 771 encode_putfh_maxsz + \ 772 encode_getacl_maxsz) 773 #define NFS4_dec_getacl_sz (compound_decode_hdr_maxsz + \ 774 decode_sequence_maxsz + \ 775 decode_putfh_maxsz + \ 776 decode_getacl_maxsz) 777 #define NFS4_enc_setacl_sz (compound_encode_hdr_maxsz + \ 778 encode_sequence_maxsz + \ 779 encode_putfh_maxsz + \ 780 encode_setacl_maxsz) 781 #define NFS4_dec_setacl_sz (compound_decode_hdr_maxsz + \ 782 decode_sequence_maxsz + \ 783 decode_putfh_maxsz + \ 784 decode_setacl_maxsz) 785 #define NFS4_enc_fs_locations_sz \ 786 (compound_encode_hdr_maxsz + \ 787 encode_sequence_maxsz + \ 788 encode_putfh_maxsz + \ 789 encode_lookup_maxsz + \ 790 encode_fs_locations_maxsz + \ 791 encode_renew_maxsz) 792 #define NFS4_dec_fs_locations_sz \ 793 (compound_decode_hdr_maxsz + \ 794 decode_sequence_maxsz + \ 795 decode_putfh_maxsz + \ 796 decode_lookup_maxsz + \ 797 decode_fs_locations_maxsz + \ 798 decode_renew_maxsz) 799 #define NFS4_enc_secinfo_sz (compound_encode_hdr_maxsz + \ 800 encode_sequence_maxsz + \ 801 encode_putfh_maxsz + \ 802 encode_secinfo_maxsz) 803 #define NFS4_dec_secinfo_sz (compound_decode_hdr_maxsz + \ 804 decode_sequence_maxsz + \ 805 decode_putfh_maxsz + \ 806 decode_secinfo_maxsz) 807 #define NFS4_enc_fsid_present_sz \ 808 (compound_encode_hdr_maxsz + \ 809 encode_sequence_maxsz + \ 810 encode_putfh_maxsz + \ 811 encode_getfh_maxsz + \ 812 encode_renew_maxsz) 813 #define NFS4_dec_fsid_present_sz \ 814 (compound_decode_hdr_maxsz + \ 815 decode_sequence_maxsz + \ 816 decode_putfh_maxsz + \ 817 decode_getfh_maxsz + \ 818 decode_renew_maxsz) 819 #if defined(CONFIG_NFS_V4_1) 820 #define NFS4_enc_bind_conn_to_session_sz \ 821 (compound_encode_hdr_maxsz + \ 822 encode_bind_conn_to_session_maxsz) 823 #define NFS4_dec_bind_conn_to_session_sz \ 824 (compound_decode_hdr_maxsz + \ 825 decode_bind_conn_to_session_maxsz) 826 #define NFS4_enc_exchange_id_sz \ 827 (compound_encode_hdr_maxsz + \ 828 encode_exchange_id_maxsz) 829 #define NFS4_dec_exchange_id_sz \ 830 (compound_decode_hdr_maxsz + \ 831 decode_exchange_id_maxsz) 832 #define NFS4_enc_create_session_sz \ 833 (compound_encode_hdr_maxsz + \ 834 encode_create_session_maxsz) 835 #define NFS4_dec_create_session_sz \ 836 (compound_decode_hdr_maxsz + \ 837 decode_create_session_maxsz) 838 #define NFS4_enc_destroy_session_sz (compound_encode_hdr_maxsz + \ 839 encode_destroy_session_maxsz) 840 #define NFS4_dec_destroy_session_sz (compound_decode_hdr_maxsz + \ 841 decode_destroy_session_maxsz) 842 #define NFS4_enc_destroy_clientid_sz (compound_encode_hdr_maxsz + \ 843 encode_destroy_clientid_maxsz) 844 #define NFS4_dec_destroy_clientid_sz (compound_decode_hdr_maxsz + \ 845 decode_destroy_clientid_maxsz) 846 #define NFS4_enc_sequence_sz \ 847 (compound_decode_hdr_maxsz + \ 848 encode_sequence_maxsz) 849 #define NFS4_dec_sequence_sz \ 850 (compound_decode_hdr_maxsz + \ 851 decode_sequence_maxsz) 852 #endif 853 #define NFS4_enc_get_lease_time_sz (compound_encode_hdr_maxsz + \ 854 encode_sequence_maxsz + \ 855 encode_putrootfh_maxsz + \ 856 encode_fsinfo_maxsz) 857 #define NFS4_dec_get_lease_time_sz (compound_decode_hdr_maxsz + \ 858 decode_sequence_maxsz + \ 859 decode_putrootfh_maxsz + \ 860 decode_fsinfo_maxsz) 861 #if defined(CONFIG_NFS_V4_1) 862 #define NFS4_enc_reclaim_complete_sz (compound_encode_hdr_maxsz + \ 863 encode_sequence_maxsz + \ 864 encode_reclaim_complete_maxsz) 865 #define NFS4_dec_reclaim_complete_sz (compound_decode_hdr_maxsz + \ 866 decode_sequence_maxsz + \ 867 decode_reclaim_complete_maxsz) 868 #define NFS4_enc_getdeviceinfo_sz (compound_encode_hdr_maxsz + \ 869 encode_sequence_maxsz +\ 870 encode_getdeviceinfo_maxsz) 871 #define NFS4_dec_getdeviceinfo_sz (compound_decode_hdr_maxsz + \ 872 decode_sequence_maxsz + \ 873 decode_getdeviceinfo_maxsz) 874 #define NFS4_enc_layoutget_sz (compound_encode_hdr_maxsz + \ 875 encode_sequence_maxsz + \ 876 encode_putfh_maxsz + \ 877 encode_layoutget_maxsz) 878 #define NFS4_dec_layoutget_sz (compound_decode_hdr_maxsz + \ 879 decode_sequence_maxsz + \ 880 decode_putfh_maxsz + \ 881 decode_layoutget_maxsz) 882 #define NFS4_enc_layoutcommit_sz (compound_encode_hdr_maxsz + \ 883 encode_sequence_maxsz +\ 884 encode_putfh_maxsz + \ 885 encode_layoutcommit_maxsz + \ 886 encode_getattr_maxsz) 887 #define NFS4_dec_layoutcommit_sz (compound_decode_hdr_maxsz + \ 888 decode_sequence_maxsz + \ 889 decode_putfh_maxsz + \ 890 decode_layoutcommit_maxsz + \ 891 decode_getattr_maxsz) 892 #define NFS4_enc_layoutreturn_sz (compound_encode_hdr_maxsz + \ 893 encode_sequence_maxsz + \ 894 encode_putfh_maxsz + \ 895 encode_layoutreturn_maxsz) 896 #define NFS4_dec_layoutreturn_sz (compound_decode_hdr_maxsz + \ 897 decode_sequence_maxsz + \ 898 decode_putfh_maxsz + \ 899 decode_layoutreturn_maxsz) 900 #define NFS4_enc_secinfo_no_name_sz (compound_encode_hdr_maxsz + \ 901 encode_sequence_maxsz + \ 902 encode_putrootfh_maxsz +\ 903 encode_secinfo_no_name_maxsz) 904 #define NFS4_dec_secinfo_no_name_sz (compound_decode_hdr_maxsz + \ 905 decode_sequence_maxsz + \ 906 decode_putrootfh_maxsz + \ 907 decode_secinfo_no_name_maxsz) 908 #define NFS4_enc_test_stateid_sz (compound_encode_hdr_maxsz + \ 909 encode_sequence_maxsz + \ 910 encode_test_stateid_maxsz) 911 #define NFS4_dec_test_stateid_sz (compound_decode_hdr_maxsz + \ 912 decode_sequence_maxsz + \ 913 decode_test_stateid_maxsz) 914 #define NFS4_enc_free_stateid_sz (compound_encode_hdr_maxsz + \ 915 encode_sequence_maxsz + \ 916 encode_free_stateid_maxsz) 917 #define NFS4_dec_free_stateid_sz (compound_decode_hdr_maxsz + \ 918 decode_sequence_maxsz + \ 919 decode_free_stateid_maxsz) 920 921 const u32 nfs41_maxwrite_overhead = ((RPC_MAX_HEADER_WITH_AUTH + 922 compound_encode_hdr_maxsz + 923 encode_sequence_maxsz + 924 encode_putfh_maxsz + 925 encode_getattr_maxsz) * 926 XDR_UNIT); 927 928 const u32 nfs41_maxread_overhead = ((RPC_MAX_HEADER_WITH_AUTH + 929 compound_decode_hdr_maxsz + 930 decode_sequence_maxsz + 931 decode_putfh_maxsz) * 932 XDR_UNIT); 933 934 const u32 nfs41_maxgetdevinfo_overhead = ((RPC_MAX_REPHEADER_WITH_AUTH + 935 compound_decode_hdr_maxsz + 936 decode_sequence_maxsz) * 937 XDR_UNIT); 938 EXPORT_SYMBOL_GPL(nfs41_maxgetdevinfo_overhead); 939 #endif /* CONFIG_NFS_V4_1 */ 940 941 static const umode_t nfs_type2fmt[] = { 942 [NF4BAD] = 0, 943 [NF4REG] = S_IFREG, 944 [NF4DIR] = S_IFDIR, 945 [NF4BLK] = S_IFBLK, 946 [NF4CHR] = S_IFCHR, 947 [NF4LNK] = S_IFLNK, 948 [NF4SOCK] = S_IFSOCK, 949 [NF4FIFO] = S_IFIFO, 950 [NF4ATTRDIR] = 0, 951 [NF4NAMEDATTR] = 0, 952 }; 953 954 struct compound_hdr { 955 int32_t status; 956 uint32_t nops; 957 __be32 * nops_p; 958 uint32_t taglen; 959 char * tag; 960 uint32_t replen; /* expected reply words */ 961 u32 minorversion; 962 }; 963 964 static __be32 *reserve_space(struct xdr_stream *xdr, size_t nbytes) 965 { 966 __be32 *p = xdr_reserve_space(xdr, nbytes); 967 BUG_ON(!p); 968 return p; 969 } 970 971 static void encode_opaque_fixed(struct xdr_stream *xdr, const void *buf, size_t len) 972 { 973 WARN_ON_ONCE(xdr_stream_encode_opaque_fixed(xdr, buf, len) < 0); 974 } 975 976 static void encode_string(struct xdr_stream *xdr, unsigned int len, const char *str) 977 { 978 WARN_ON_ONCE(xdr_stream_encode_opaque(xdr, str, len) < 0); 979 } 980 981 static void encode_uint32(struct xdr_stream *xdr, u32 n) 982 { 983 WARN_ON_ONCE(xdr_stream_encode_u32(xdr, n) < 0); 984 } 985 986 static void encode_uint64(struct xdr_stream *xdr, u64 n) 987 { 988 WARN_ON_ONCE(xdr_stream_encode_u64(xdr, n) < 0); 989 } 990 991 static ssize_t xdr_encode_bitmap4(struct xdr_stream *xdr, 992 const __u32 *bitmap, size_t len) 993 { 994 ssize_t ret; 995 996 /* Trim empty words */ 997 while (len > 0 && bitmap[len-1] == 0) 998 len--; 999 ret = xdr_stream_encode_uint32_array(xdr, bitmap, len); 1000 if (WARN_ON_ONCE(ret < 0)) 1001 return ret; 1002 return len; 1003 } 1004 1005 static size_t mask_bitmap4(const __u32 *bitmap, const __u32 *mask, 1006 __u32 *res, size_t len) 1007 { 1008 size_t i; 1009 __u32 tmp; 1010 1011 while (len > 0 && (bitmap[len-1] == 0 || mask[len-1] == 0)) 1012 len--; 1013 for (i = len; i-- > 0;) { 1014 tmp = bitmap[i] & mask[i]; 1015 res[i] = tmp; 1016 } 1017 return len; 1018 } 1019 1020 static void encode_nfs4_seqid(struct xdr_stream *xdr, 1021 const struct nfs_seqid *seqid) 1022 { 1023 if (seqid != NULL) 1024 encode_uint32(xdr, seqid->sequence->counter); 1025 else 1026 encode_uint32(xdr, 0); 1027 } 1028 1029 static void encode_compound_hdr(struct xdr_stream *xdr, 1030 struct rpc_rqst *req, 1031 struct compound_hdr *hdr) 1032 { 1033 __be32 *p; 1034 1035 /* initialize running count of expected bytes in reply. 1036 * NOTE: the replied tag SHOULD be the same is the one sent, 1037 * but this is not required as a MUST for the server to do so. */ 1038 hdr->replen = 3 + hdr->taglen; 1039 1040 WARN_ON_ONCE(hdr->taglen > NFS4_MAXTAGLEN); 1041 encode_string(xdr, hdr->taglen, hdr->tag); 1042 p = reserve_space(xdr, 8); 1043 *p++ = cpu_to_be32(hdr->minorversion); 1044 hdr->nops_p = p; 1045 *p = cpu_to_be32(hdr->nops); 1046 } 1047 1048 static void encode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 op, 1049 uint32_t replen, 1050 struct compound_hdr *hdr) 1051 { 1052 encode_uint32(xdr, op); 1053 hdr->nops++; 1054 hdr->replen += replen; 1055 } 1056 1057 static void encode_nops(struct compound_hdr *hdr) 1058 { 1059 WARN_ON_ONCE(hdr->nops > NFS4_MAX_OPS); 1060 *hdr->nops_p = htonl(hdr->nops); 1061 } 1062 1063 static void encode_nfs4_stateid(struct xdr_stream *xdr, const nfs4_stateid *stateid) 1064 { 1065 encode_opaque_fixed(xdr, stateid, NFS4_STATEID_SIZE); 1066 } 1067 1068 static void encode_nfs4_verifier(struct xdr_stream *xdr, const nfs4_verifier *verf) 1069 { 1070 encode_opaque_fixed(xdr, verf->data, NFS4_VERIFIER_SIZE); 1071 } 1072 1073 static __be32 * 1074 xdr_encode_nfstime4(__be32 *p, const struct timespec64 *t) 1075 { 1076 p = xdr_encode_hyper(p, t->tv_sec); 1077 *p++ = cpu_to_be32(t->tv_nsec); 1078 return p; 1079 } 1080 1081 static void encode_attrs(struct xdr_stream *xdr, const struct iattr *iap, 1082 const struct nfs4_label *label, 1083 const umode_t *umask, 1084 const struct nfs_server *server, 1085 const uint32_t attrmask[]) 1086 { 1087 char owner_name[IDMAP_NAMESZ]; 1088 char owner_group[IDMAP_NAMESZ]; 1089 int owner_namelen = 0; 1090 int owner_grouplen = 0; 1091 __be32 *p; 1092 uint32_t len = 0; 1093 uint32_t bmval[3] = { 0 }; 1094 1095 /* 1096 * We reserve enough space to write the entire attribute buffer at once. 1097 */ 1098 if ((iap->ia_valid & ATTR_SIZE) && (attrmask[0] & FATTR4_WORD0_SIZE)) { 1099 bmval[0] |= FATTR4_WORD0_SIZE; 1100 len += 8; 1101 } 1102 if (iap->ia_valid & ATTR_MODE) { 1103 if (umask && (attrmask[2] & FATTR4_WORD2_MODE_UMASK)) { 1104 bmval[2] |= FATTR4_WORD2_MODE_UMASK; 1105 len += 8; 1106 } else if (attrmask[1] & FATTR4_WORD1_MODE) { 1107 bmval[1] |= FATTR4_WORD1_MODE; 1108 len += 4; 1109 } 1110 } 1111 if ((iap->ia_valid & ATTR_UID) && (attrmask[1] & FATTR4_WORD1_OWNER)) { 1112 owner_namelen = nfs_map_uid_to_name(server, iap->ia_uid, owner_name, IDMAP_NAMESZ); 1113 if (owner_namelen < 0) { 1114 dprintk("nfs: couldn't resolve uid %d to string\n", 1115 from_kuid(&init_user_ns, iap->ia_uid)); 1116 /* XXX */ 1117 strcpy(owner_name, "nobody"); 1118 owner_namelen = sizeof("nobody") - 1; 1119 /* goto out; */ 1120 } 1121 bmval[1] |= FATTR4_WORD1_OWNER; 1122 len += 4 + (XDR_QUADLEN(owner_namelen) << 2); 1123 } 1124 if ((iap->ia_valid & ATTR_GID) && 1125 (attrmask[1] & FATTR4_WORD1_OWNER_GROUP)) { 1126 owner_grouplen = nfs_map_gid_to_group(server, iap->ia_gid, owner_group, IDMAP_NAMESZ); 1127 if (owner_grouplen < 0) { 1128 dprintk("nfs: couldn't resolve gid %d to string\n", 1129 from_kgid(&init_user_ns, iap->ia_gid)); 1130 strcpy(owner_group, "nobody"); 1131 owner_grouplen = sizeof("nobody") - 1; 1132 /* goto out; */ 1133 } 1134 bmval[1] |= FATTR4_WORD1_OWNER_GROUP; 1135 len += 4 + (XDR_QUADLEN(owner_grouplen) << 2); 1136 } 1137 if (attrmask[1] & FATTR4_WORD1_TIME_ACCESS_SET) { 1138 if (iap->ia_valid & ATTR_ATIME_SET) { 1139 bmval[1] |= FATTR4_WORD1_TIME_ACCESS_SET; 1140 len += 4 + (nfstime4_maxsz << 2); 1141 } else if (iap->ia_valid & ATTR_ATIME) { 1142 bmval[1] |= FATTR4_WORD1_TIME_ACCESS_SET; 1143 len += 4; 1144 } 1145 } 1146 if (attrmask[1] & FATTR4_WORD1_TIME_MODIFY_SET) { 1147 if (iap->ia_valid & ATTR_MTIME_SET) { 1148 bmval[1] |= FATTR4_WORD1_TIME_MODIFY_SET; 1149 len += 4 + (nfstime4_maxsz << 2); 1150 } else if (iap->ia_valid & ATTR_MTIME) { 1151 bmval[1] |= FATTR4_WORD1_TIME_MODIFY_SET; 1152 len += 4; 1153 } 1154 } 1155 1156 if (label && (attrmask[2] & FATTR4_WORD2_SECURITY_LABEL)) { 1157 len += 4 + 4 + 4 + (XDR_QUADLEN(label->len) << 2); 1158 bmval[2] |= FATTR4_WORD2_SECURITY_LABEL; 1159 } 1160 1161 xdr_encode_bitmap4(xdr, bmval, ARRAY_SIZE(bmval)); 1162 xdr_stream_encode_opaque_inline(xdr, (void **)&p, len); 1163 1164 if (bmval[0] & FATTR4_WORD0_SIZE) 1165 p = xdr_encode_hyper(p, iap->ia_size); 1166 if (bmval[1] & FATTR4_WORD1_MODE) 1167 *p++ = cpu_to_be32(iap->ia_mode & S_IALLUGO); 1168 if (bmval[1] & FATTR4_WORD1_OWNER) 1169 p = xdr_encode_opaque(p, owner_name, owner_namelen); 1170 if (bmval[1] & FATTR4_WORD1_OWNER_GROUP) 1171 p = xdr_encode_opaque(p, owner_group, owner_grouplen); 1172 if (bmval[1] & FATTR4_WORD1_TIME_ACCESS_SET) { 1173 if (iap->ia_valid & ATTR_ATIME_SET) { 1174 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME); 1175 p = xdr_encode_nfstime4(p, &iap->ia_atime); 1176 } else 1177 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME); 1178 } 1179 if (bmval[1] & FATTR4_WORD1_TIME_MODIFY_SET) { 1180 if (iap->ia_valid & ATTR_MTIME_SET) { 1181 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME); 1182 p = xdr_encode_nfstime4(p, &iap->ia_mtime); 1183 } else 1184 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME); 1185 } 1186 if (label && (bmval[2] & FATTR4_WORD2_SECURITY_LABEL)) { 1187 *p++ = cpu_to_be32(label->lfs); 1188 *p++ = cpu_to_be32(label->pi); 1189 *p++ = cpu_to_be32(label->len); 1190 p = xdr_encode_opaque_fixed(p, label->label, label->len); 1191 } 1192 if (bmval[2] & FATTR4_WORD2_MODE_UMASK) { 1193 *p++ = cpu_to_be32(iap->ia_mode & S_IALLUGO); 1194 *p++ = cpu_to_be32(*umask); 1195 } 1196 1197 /* out: */ 1198 } 1199 1200 static void encode_access(struct xdr_stream *xdr, u32 access, struct compound_hdr *hdr) 1201 { 1202 encode_op_hdr(xdr, OP_ACCESS, decode_access_maxsz, hdr); 1203 encode_uint32(xdr, access); 1204 } 1205 1206 static void encode_close(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr) 1207 { 1208 encode_op_hdr(xdr, OP_CLOSE, decode_close_maxsz, hdr); 1209 encode_nfs4_seqid(xdr, arg->seqid); 1210 encode_nfs4_stateid(xdr, &arg->stateid); 1211 } 1212 1213 static void encode_commit(struct xdr_stream *xdr, const struct nfs_commitargs *args, struct compound_hdr *hdr) 1214 { 1215 __be32 *p; 1216 1217 encode_op_hdr(xdr, OP_COMMIT, decode_commit_maxsz, hdr); 1218 p = reserve_space(xdr, 12); 1219 p = xdr_encode_hyper(p, args->offset); 1220 *p = cpu_to_be32(args->count); 1221 } 1222 1223 static void encode_create(struct xdr_stream *xdr, const struct nfs4_create_arg *create, struct compound_hdr *hdr) 1224 { 1225 __be32 *p; 1226 1227 encode_op_hdr(xdr, OP_CREATE, decode_create_maxsz, hdr); 1228 encode_uint32(xdr, create->ftype); 1229 1230 switch (create->ftype) { 1231 case NF4LNK: 1232 p = reserve_space(xdr, 4); 1233 *p = cpu_to_be32(create->u.symlink.len); 1234 xdr_write_pages(xdr, create->u.symlink.pages, 0, 1235 create->u.symlink.len); 1236 xdr->buf->flags |= XDRBUF_WRITE; 1237 break; 1238 1239 case NF4BLK: case NF4CHR: 1240 p = reserve_space(xdr, 8); 1241 *p++ = cpu_to_be32(create->u.device.specdata1); 1242 *p = cpu_to_be32(create->u.device.specdata2); 1243 break; 1244 1245 default: 1246 break; 1247 } 1248 1249 encode_string(xdr, create->name->len, create->name->name); 1250 encode_attrs(xdr, create->attrs, create->label, &create->umask, 1251 create->server, create->server->attr_bitmask); 1252 } 1253 1254 static void encode_getattr(struct xdr_stream *xdr, 1255 const __u32 *bitmap, const __u32 *mask, size_t len, 1256 struct compound_hdr *hdr) 1257 { 1258 __u32 masked_bitmap[nfs4_fattr_bitmap_maxsz]; 1259 1260 encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr); 1261 if (mask) { 1262 if (WARN_ON_ONCE(len > ARRAY_SIZE(masked_bitmap))) 1263 len = ARRAY_SIZE(masked_bitmap); 1264 len = mask_bitmap4(bitmap, mask, masked_bitmap, len); 1265 bitmap = masked_bitmap; 1266 } 1267 xdr_encode_bitmap4(xdr, bitmap, len); 1268 } 1269 1270 static void encode_getfattr(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr) 1271 { 1272 encode_getattr(xdr, nfs4_fattr_bitmap, bitmask, 1273 ARRAY_SIZE(nfs4_fattr_bitmap), hdr); 1274 } 1275 1276 static void encode_getfattr_open(struct xdr_stream *xdr, const u32 *bitmask, 1277 const u32 *open_bitmap, 1278 struct compound_hdr *hdr) 1279 { 1280 encode_getattr(xdr, open_bitmap, bitmask, 3, hdr); 1281 } 1282 1283 static void encode_fsinfo(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr) 1284 { 1285 encode_getattr(xdr, nfs4_fsinfo_bitmap, bitmask, 1286 ARRAY_SIZE(nfs4_fsinfo_bitmap), hdr); 1287 } 1288 1289 static void encode_fs_locations(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr) 1290 { 1291 encode_getattr(xdr, nfs4_fs_locations_bitmap, bitmask, 1292 ARRAY_SIZE(nfs4_fs_locations_bitmap), hdr); 1293 } 1294 1295 static void encode_getfh(struct xdr_stream *xdr, struct compound_hdr *hdr) 1296 { 1297 encode_op_hdr(xdr, OP_GETFH, decode_getfh_maxsz, hdr); 1298 } 1299 1300 static void encode_link(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr) 1301 { 1302 encode_op_hdr(xdr, OP_LINK, decode_link_maxsz, hdr); 1303 encode_string(xdr, name->len, name->name); 1304 } 1305 1306 static inline int nfs4_lock_type(struct file_lock *fl, int block) 1307 { 1308 if (fl->fl_type == F_RDLCK) 1309 return block ? NFS4_READW_LT : NFS4_READ_LT; 1310 return block ? NFS4_WRITEW_LT : NFS4_WRITE_LT; 1311 } 1312 1313 static inline uint64_t nfs4_lock_length(struct file_lock *fl) 1314 { 1315 if (fl->fl_end == OFFSET_MAX) 1316 return ~(uint64_t)0; 1317 return fl->fl_end - fl->fl_start + 1; 1318 } 1319 1320 static void encode_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner) 1321 { 1322 __be32 *p; 1323 1324 p = reserve_space(xdr, 32); 1325 p = xdr_encode_hyper(p, lowner->clientid); 1326 *p++ = cpu_to_be32(20); 1327 p = xdr_encode_opaque_fixed(p, "lock id:", 8); 1328 *p++ = cpu_to_be32(lowner->s_dev); 1329 xdr_encode_hyper(p, lowner->id); 1330 } 1331 1332 /* 1333 * opcode,type,reclaim,offset,length,new_lock_owner = 32 1334 * open_seqid,open_stateid,lock_seqid,lock_owner.clientid, lock_owner.id = 40 1335 */ 1336 static void encode_lock(struct xdr_stream *xdr, const struct nfs_lock_args *args, struct compound_hdr *hdr) 1337 { 1338 __be32 *p; 1339 1340 encode_op_hdr(xdr, OP_LOCK, decode_lock_maxsz, hdr); 1341 p = reserve_space(xdr, 28); 1342 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, args->block)); 1343 *p++ = cpu_to_be32(args->reclaim); 1344 p = xdr_encode_hyper(p, args->fl->fl_start); 1345 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl)); 1346 *p = cpu_to_be32(args->new_lock_owner); 1347 if (args->new_lock_owner){ 1348 encode_nfs4_seqid(xdr, args->open_seqid); 1349 encode_nfs4_stateid(xdr, &args->open_stateid); 1350 encode_nfs4_seqid(xdr, args->lock_seqid); 1351 encode_lockowner(xdr, &args->lock_owner); 1352 } 1353 else { 1354 encode_nfs4_stateid(xdr, &args->lock_stateid); 1355 encode_nfs4_seqid(xdr, args->lock_seqid); 1356 } 1357 } 1358 1359 static void encode_lockt(struct xdr_stream *xdr, const struct nfs_lockt_args *args, struct compound_hdr *hdr) 1360 { 1361 __be32 *p; 1362 1363 encode_op_hdr(xdr, OP_LOCKT, decode_lockt_maxsz, hdr); 1364 p = reserve_space(xdr, 20); 1365 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, 0)); 1366 p = xdr_encode_hyper(p, args->fl->fl_start); 1367 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl)); 1368 encode_lockowner(xdr, &args->lock_owner); 1369 } 1370 1371 static void encode_locku(struct xdr_stream *xdr, const struct nfs_locku_args *args, struct compound_hdr *hdr) 1372 { 1373 __be32 *p; 1374 1375 encode_op_hdr(xdr, OP_LOCKU, decode_locku_maxsz, hdr); 1376 encode_uint32(xdr, nfs4_lock_type(args->fl, 0)); 1377 encode_nfs4_seqid(xdr, args->seqid); 1378 encode_nfs4_stateid(xdr, &args->stateid); 1379 p = reserve_space(xdr, 16); 1380 p = xdr_encode_hyper(p, args->fl->fl_start); 1381 xdr_encode_hyper(p, nfs4_lock_length(args->fl)); 1382 } 1383 1384 static void encode_release_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner, struct compound_hdr *hdr) 1385 { 1386 encode_op_hdr(xdr, OP_RELEASE_LOCKOWNER, decode_release_lockowner_maxsz, hdr); 1387 encode_lockowner(xdr, lowner); 1388 } 1389 1390 static void encode_lookup(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr) 1391 { 1392 encode_op_hdr(xdr, OP_LOOKUP, decode_lookup_maxsz, hdr); 1393 encode_string(xdr, name->len, name->name); 1394 } 1395 1396 static void encode_lookupp(struct xdr_stream *xdr, struct compound_hdr *hdr) 1397 { 1398 encode_op_hdr(xdr, OP_LOOKUPP, decode_lookupp_maxsz, hdr); 1399 } 1400 1401 static void encode_share_access(struct xdr_stream *xdr, u32 share_access) 1402 { 1403 __be32 *p; 1404 1405 p = reserve_space(xdr, 8); 1406 *p++ = cpu_to_be32(share_access); 1407 *p = cpu_to_be32(0); /* for linux, share_deny = 0 always */ 1408 } 1409 1410 static inline void encode_openhdr(struct xdr_stream *xdr, const struct nfs_openargs *arg) 1411 { 1412 __be32 *p; 1413 /* 1414 * opcode 4, seqid 4, share_access 4, share_deny 4, clientid 8, ownerlen 4, 1415 * owner 4 = 32 1416 */ 1417 encode_nfs4_seqid(xdr, arg->seqid); 1418 encode_share_access(xdr, arg->share_access); 1419 p = reserve_space(xdr, 36); 1420 p = xdr_encode_hyper(p, arg->clientid); 1421 *p++ = cpu_to_be32(24); 1422 p = xdr_encode_opaque_fixed(p, "open id:", 8); 1423 *p++ = cpu_to_be32(arg->server->s_dev); 1424 *p++ = cpu_to_be32(arg->id.uniquifier); 1425 xdr_encode_hyper(p, arg->id.create_time); 1426 } 1427 1428 static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_openargs *arg) 1429 { 1430 __be32 *p; 1431 1432 p = reserve_space(xdr, 4); 1433 switch(arg->createmode) { 1434 case NFS4_CREATE_UNCHECKED: 1435 *p = cpu_to_be32(NFS4_CREATE_UNCHECKED); 1436 encode_attrs(xdr, arg->u.attrs, arg->label, &arg->umask, 1437 arg->server, arg->server->attr_bitmask); 1438 break; 1439 case NFS4_CREATE_GUARDED: 1440 *p = cpu_to_be32(NFS4_CREATE_GUARDED); 1441 encode_attrs(xdr, arg->u.attrs, arg->label, &arg->umask, 1442 arg->server, arg->server->attr_bitmask); 1443 break; 1444 case NFS4_CREATE_EXCLUSIVE: 1445 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE); 1446 encode_nfs4_verifier(xdr, &arg->u.verifier); 1447 break; 1448 case NFS4_CREATE_EXCLUSIVE4_1: 1449 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE4_1); 1450 encode_nfs4_verifier(xdr, &arg->u.verifier); 1451 encode_attrs(xdr, arg->u.attrs, arg->label, &arg->umask, 1452 arg->server, arg->server->exclcreat_bitmask); 1453 } 1454 } 1455 1456 static void encode_opentype(struct xdr_stream *xdr, const struct nfs_openargs *arg) 1457 { 1458 __be32 *p; 1459 1460 p = reserve_space(xdr, 4); 1461 switch (arg->open_flags & O_CREAT) { 1462 case 0: 1463 *p = cpu_to_be32(NFS4_OPEN_NOCREATE); 1464 break; 1465 default: 1466 *p = cpu_to_be32(NFS4_OPEN_CREATE); 1467 encode_createmode(xdr, arg); 1468 } 1469 } 1470 1471 static inline void encode_delegation_type(struct xdr_stream *xdr, fmode_t delegation_type) 1472 { 1473 __be32 *p; 1474 1475 p = reserve_space(xdr, 4); 1476 switch (delegation_type) { 1477 case 0: 1478 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_NONE); 1479 break; 1480 case FMODE_READ: 1481 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_READ); 1482 break; 1483 case FMODE_WRITE|FMODE_READ: 1484 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_WRITE); 1485 break; 1486 default: 1487 BUG(); 1488 } 1489 } 1490 1491 static inline void encode_claim_null(struct xdr_stream *xdr, const struct qstr *name) 1492 { 1493 __be32 *p; 1494 1495 p = reserve_space(xdr, 4); 1496 *p = cpu_to_be32(NFS4_OPEN_CLAIM_NULL); 1497 encode_string(xdr, name->len, name->name); 1498 } 1499 1500 static inline void encode_claim_previous(struct xdr_stream *xdr, fmode_t type) 1501 { 1502 __be32 *p; 1503 1504 p = reserve_space(xdr, 4); 1505 *p = cpu_to_be32(NFS4_OPEN_CLAIM_PREVIOUS); 1506 encode_delegation_type(xdr, type); 1507 } 1508 1509 static inline void encode_claim_delegate_cur(struct xdr_stream *xdr, const struct qstr *name, const nfs4_stateid *stateid) 1510 { 1511 __be32 *p; 1512 1513 p = reserve_space(xdr, 4); 1514 *p = cpu_to_be32(NFS4_OPEN_CLAIM_DELEGATE_CUR); 1515 encode_nfs4_stateid(xdr, stateid); 1516 encode_string(xdr, name->len, name->name); 1517 } 1518 1519 static inline void encode_claim_fh(struct xdr_stream *xdr) 1520 { 1521 __be32 *p; 1522 1523 p = reserve_space(xdr, 4); 1524 *p = cpu_to_be32(NFS4_OPEN_CLAIM_FH); 1525 } 1526 1527 static inline void encode_claim_delegate_cur_fh(struct xdr_stream *xdr, const nfs4_stateid *stateid) 1528 { 1529 __be32 *p; 1530 1531 p = reserve_space(xdr, 4); 1532 *p = cpu_to_be32(NFS4_OPEN_CLAIM_DELEG_CUR_FH); 1533 encode_nfs4_stateid(xdr, stateid); 1534 } 1535 1536 static void encode_open(struct xdr_stream *xdr, const struct nfs_openargs *arg, struct compound_hdr *hdr) 1537 { 1538 encode_op_hdr(xdr, OP_OPEN, decode_open_maxsz, hdr); 1539 encode_openhdr(xdr, arg); 1540 encode_opentype(xdr, arg); 1541 switch (arg->claim) { 1542 case NFS4_OPEN_CLAIM_NULL: 1543 encode_claim_null(xdr, arg->name); 1544 break; 1545 case NFS4_OPEN_CLAIM_PREVIOUS: 1546 encode_claim_previous(xdr, arg->u.delegation_type); 1547 break; 1548 case NFS4_OPEN_CLAIM_DELEGATE_CUR: 1549 encode_claim_delegate_cur(xdr, arg->name, &arg->u.delegation); 1550 break; 1551 case NFS4_OPEN_CLAIM_FH: 1552 encode_claim_fh(xdr); 1553 break; 1554 case NFS4_OPEN_CLAIM_DELEG_CUR_FH: 1555 encode_claim_delegate_cur_fh(xdr, &arg->u.delegation); 1556 break; 1557 default: 1558 BUG(); 1559 } 1560 } 1561 1562 static void encode_open_confirm(struct xdr_stream *xdr, const struct nfs_open_confirmargs *arg, struct compound_hdr *hdr) 1563 { 1564 encode_op_hdr(xdr, OP_OPEN_CONFIRM, decode_open_confirm_maxsz, hdr); 1565 encode_nfs4_stateid(xdr, arg->stateid); 1566 encode_nfs4_seqid(xdr, arg->seqid); 1567 } 1568 1569 static void encode_open_downgrade(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr) 1570 { 1571 encode_op_hdr(xdr, OP_OPEN_DOWNGRADE, decode_open_downgrade_maxsz, hdr); 1572 encode_nfs4_stateid(xdr, &arg->stateid); 1573 encode_nfs4_seqid(xdr, arg->seqid); 1574 encode_share_access(xdr, arg->share_access); 1575 } 1576 1577 static void 1578 encode_putfh(struct xdr_stream *xdr, const struct nfs_fh *fh, struct compound_hdr *hdr) 1579 { 1580 encode_op_hdr(xdr, OP_PUTFH, decode_putfh_maxsz, hdr); 1581 encode_string(xdr, fh->size, fh->data); 1582 } 1583 1584 static void encode_putrootfh(struct xdr_stream *xdr, struct compound_hdr *hdr) 1585 { 1586 encode_op_hdr(xdr, OP_PUTROOTFH, decode_putrootfh_maxsz, hdr); 1587 } 1588 1589 static void encode_read(struct xdr_stream *xdr, const struct nfs_pgio_args *args, 1590 struct compound_hdr *hdr) 1591 { 1592 __be32 *p; 1593 1594 encode_op_hdr(xdr, OP_READ, decode_read_maxsz, hdr); 1595 encode_nfs4_stateid(xdr, &args->stateid); 1596 1597 p = reserve_space(xdr, 12); 1598 p = xdr_encode_hyper(p, args->offset); 1599 *p = cpu_to_be32(args->count); 1600 } 1601 1602 static void encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg *readdir, struct rpc_rqst *req, struct compound_hdr *hdr) 1603 { 1604 uint32_t attrs[3] = { 1605 FATTR4_WORD0_RDATTR_ERROR, 1606 FATTR4_WORD1_MOUNTED_ON_FILEID, 1607 }; 1608 uint32_t dircount = readdir->count >> 1; 1609 __be32 *p, verf[2]; 1610 uint32_t attrlen = 0; 1611 unsigned int i; 1612 1613 if (readdir->plus) { 1614 attrs[0] |= FATTR4_WORD0_TYPE|FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE| 1615 FATTR4_WORD0_FSID|FATTR4_WORD0_FILEHANDLE|FATTR4_WORD0_FILEID; 1616 attrs[1] |= FATTR4_WORD1_MODE|FATTR4_WORD1_NUMLINKS|FATTR4_WORD1_OWNER| 1617 FATTR4_WORD1_OWNER_GROUP|FATTR4_WORD1_RAWDEV| 1618 FATTR4_WORD1_SPACE_USED|FATTR4_WORD1_TIME_ACCESS| 1619 FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY; 1620 attrs[2] |= FATTR4_WORD2_SECURITY_LABEL; 1621 dircount >>= 1; 1622 } 1623 /* Use mounted_on_fileid only if the server supports it */ 1624 if (!(readdir->bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)) 1625 attrs[0] |= FATTR4_WORD0_FILEID; 1626 for (i = 0; i < ARRAY_SIZE(attrs); i++) { 1627 attrs[i] &= readdir->bitmask[i]; 1628 if (attrs[i] != 0) 1629 attrlen = i+1; 1630 } 1631 1632 encode_op_hdr(xdr, OP_READDIR, decode_readdir_maxsz, hdr); 1633 encode_uint64(xdr, readdir->cookie); 1634 encode_nfs4_verifier(xdr, &readdir->verifier); 1635 p = reserve_space(xdr, 12 + (attrlen << 2)); 1636 *p++ = cpu_to_be32(dircount); 1637 *p++ = cpu_to_be32(readdir->count); 1638 *p++ = cpu_to_be32(attrlen); 1639 for (i = 0; i < attrlen; i++) 1640 *p++ = cpu_to_be32(attrs[i]); 1641 memcpy(verf, readdir->verifier.data, sizeof(verf)); 1642 1643 dprintk("%s: cookie = %llu, verifier = %08x:%08x, bitmap = %08x:%08x:%08x\n", 1644 __func__, 1645 (unsigned long long)readdir->cookie, 1646 verf[0], verf[1], 1647 attrs[0] & readdir->bitmask[0], 1648 attrs[1] & readdir->bitmask[1], 1649 attrs[2] & readdir->bitmask[2]); 1650 } 1651 1652 static void encode_readlink(struct xdr_stream *xdr, const struct nfs4_readlink *readlink, struct rpc_rqst *req, struct compound_hdr *hdr) 1653 { 1654 encode_op_hdr(xdr, OP_READLINK, decode_readlink_maxsz, hdr); 1655 } 1656 1657 static void encode_remove(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr) 1658 { 1659 encode_op_hdr(xdr, OP_REMOVE, decode_remove_maxsz, hdr); 1660 encode_string(xdr, name->len, name->name); 1661 } 1662 1663 static void encode_rename(struct xdr_stream *xdr, const struct qstr *oldname, const struct qstr *newname, struct compound_hdr *hdr) 1664 { 1665 encode_op_hdr(xdr, OP_RENAME, decode_rename_maxsz, hdr); 1666 encode_string(xdr, oldname->len, oldname->name); 1667 encode_string(xdr, newname->len, newname->name); 1668 } 1669 1670 static void encode_renew(struct xdr_stream *xdr, clientid4 clid, 1671 struct compound_hdr *hdr) 1672 { 1673 encode_op_hdr(xdr, OP_RENEW, decode_renew_maxsz, hdr); 1674 encode_uint64(xdr, clid); 1675 } 1676 1677 static void 1678 encode_restorefh(struct xdr_stream *xdr, struct compound_hdr *hdr) 1679 { 1680 encode_op_hdr(xdr, OP_RESTOREFH, decode_restorefh_maxsz, hdr); 1681 } 1682 1683 static void 1684 encode_setacl(struct xdr_stream *xdr, const struct nfs_setaclargs *arg, 1685 struct compound_hdr *hdr) 1686 { 1687 __be32 *p; 1688 1689 encode_op_hdr(xdr, OP_SETATTR, decode_setacl_maxsz, hdr); 1690 encode_nfs4_stateid(xdr, &zero_stateid); 1691 p = reserve_space(xdr, 2*4); 1692 *p++ = cpu_to_be32(1); 1693 *p = cpu_to_be32(FATTR4_WORD0_ACL); 1694 p = reserve_space(xdr, 4); 1695 *p = cpu_to_be32(arg->acl_len); 1696 xdr_write_pages(xdr, arg->acl_pages, 0, arg->acl_len); 1697 } 1698 1699 static void 1700 encode_savefh(struct xdr_stream *xdr, struct compound_hdr *hdr) 1701 { 1702 encode_op_hdr(xdr, OP_SAVEFH, decode_savefh_maxsz, hdr); 1703 } 1704 1705 static void encode_setattr(struct xdr_stream *xdr, const struct nfs_setattrargs *arg, const struct nfs_server *server, struct compound_hdr *hdr) 1706 { 1707 encode_op_hdr(xdr, OP_SETATTR, decode_setattr_maxsz, hdr); 1708 encode_nfs4_stateid(xdr, &arg->stateid); 1709 encode_attrs(xdr, arg->iap, arg->label, NULL, server, 1710 server->attr_bitmask); 1711 } 1712 1713 static void encode_setclientid(struct xdr_stream *xdr, const struct nfs4_setclientid *setclientid, struct compound_hdr *hdr) 1714 { 1715 __be32 *p; 1716 1717 encode_op_hdr(xdr, OP_SETCLIENTID, decode_setclientid_maxsz, hdr); 1718 encode_nfs4_verifier(xdr, setclientid->sc_verifier); 1719 1720 encode_string(xdr, strlen(setclientid->sc_clnt->cl_owner_id), 1721 setclientid->sc_clnt->cl_owner_id); 1722 p = reserve_space(xdr, 4); 1723 *p = cpu_to_be32(setclientid->sc_prog); 1724 encode_string(xdr, setclientid->sc_netid_len, setclientid->sc_netid); 1725 encode_string(xdr, setclientid->sc_uaddr_len, setclientid->sc_uaddr); 1726 p = reserve_space(xdr, 4); 1727 *p = cpu_to_be32(setclientid->sc_clnt->cl_cb_ident); 1728 } 1729 1730 static void encode_setclientid_confirm(struct xdr_stream *xdr, const struct nfs4_setclientid_res *arg, struct compound_hdr *hdr) 1731 { 1732 encode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM, 1733 decode_setclientid_confirm_maxsz, hdr); 1734 encode_uint64(xdr, arg->clientid); 1735 encode_nfs4_verifier(xdr, &arg->confirm); 1736 } 1737 1738 static void encode_write(struct xdr_stream *xdr, const struct nfs_pgio_args *args, 1739 struct compound_hdr *hdr) 1740 { 1741 __be32 *p; 1742 1743 encode_op_hdr(xdr, OP_WRITE, decode_write_maxsz, hdr); 1744 encode_nfs4_stateid(xdr, &args->stateid); 1745 1746 p = reserve_space(xdr, 16); 1747 p = xdr_encode_hyper(p, args->offset); 1748 *p++ = cpu_to_be32(args->stable); 1749 *p = cpu_to_be32(args->count); 1750 1751 xdr_write_pages(xdr, args->pages, args->pgbase, args->count); 1752 } 1753 1754 static void encode_delegreturn(struct xdr_stream *xdr, const nfs4_stateid *stateid, struct compound_hdr *hdr) 1755 { 1756 encode_op_hdr(xdr, OP_DELEGRETURN, decode_delegreturn_maxsz, hdr); 1757 encode_nfs4_stateid(xdr, stateid); 1758 } 1759 1760 static void encode_secinfo(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr) 1761 { 1762 encode_op_hdr(xdr, OP_SECINFO, decode_secinfo_maxsz, hdr); 1763 encode_string(xdr, name->len, name->name); 1764 } 1765 1766 #if defined(CONFIG_NFS_V4_1) 1767 /* NFSv4.1 operations */ 1768 static void encode_bind_conn_to_session(struct xdr_stream *xdr, 1769 const struct nfs41_bind_conn_to_session_args *args, 1770 struct compound_hdr *hdr) 1771 { 1772 __be32 *p; 1773 1774 encode_op_hdr(xdr, OP_BIND_CONN_TO_SESSION, 1775 decode_bind_conn_to_session_maxsz, hdr); 1776 encode_opaque_fixed(xdr, args->sessionid.data, NFS4_MAX_SESSIONID_LEN); 1777 p = xdr_reserve_space(xdr, 8); 1778 *p++ = cpu_to_be32(args->dir); 1779 *p = (args->use_conn_in_rdma_mode) ? cpu_to_be32(1) : cpu_to_be32(0); 1780 } 1781 1782 static void encode_op_map(struct xdr_stream *xdr, const struct nfs4_op_map *op_map) 1783 { 1784 unsigned int i; 1785 encode_uint32(xdr, NFS4_OP_MAP_NUM_WORDS); 1786 for (i = 0; i < NFS4_OP_MAP_NUM_WORDS; i++) 1787 encode_uint32(xdr, op_map->u.words[i]); 1788 } 1789 1790 static void encode_exchange_id(struct xdr_stream *xdr, 1791 const struct nfs41_exchange_id_args *args, 1792 struct compound_hdr *hdr) 1793 { 1794 __be32 *p; 1795 char impl_name[IMPL_NAME_LIMIT]; 1796 int len = 0; 1797 1798 encode_op_hdr(xdr, OP_EXCHANGE_ID, decode_exchange_id_maxsz, hdr); 1799 encode_nfs4_verifier(xdr, &args->verifier); 1800 1801 encode_string(xdr, strlen(args->client->cl_owner_id), 1802 args->client->cl_owner_id); 1803 1804 encode_uint32(xdr, args->flags); 1805 encode_uint32(xdr, args->state_protect.how); 1806 1807 switch (args->state_protect.how) { 1808 case SP4_NONE: 1809 break; 1810 case SP4_MACH_CRED: 1811 encode_op_map(xdr, &args->state_protect.enforce); 1812 encode_op_map(xdr, &args->state_protect.allow); 1813 break; 1814 default: 1815 WARN_ON_ONCE(1); 1816 break; 1817 } 1818 1819 if (send_implementation_id && 1820 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN) > 1 && 1821 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN) 1822 <= sizeof(impl_name) + 1) 1823 len = snprintf(impl_name, sizeof(impl_name), "%s %s %s %s", 1824 utsname()->sysname, utsname()->release, 1825 utsname()->version, utsname()->machine); 1826 1827 if (len > 0) { 1828 encode_uint32(xdr, 1); /* implementation id array length=1 */ 1829 1830 encode_string(xdr, 1831 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN) - 1, 1832 CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN); 1833 encode_string(xdr, len, impl_name); 1834 /* just send zeros for nii_date - the date is in nii_name */ 1835 p = reserve_space(xdr, 12); 1836 p = xdr_encode_hyper(p, 0); 1837 *p = cpu_to_be32(0); 1838 } else 1839 encode_uint32(xdr, 0); /* implementation id array length=0 */ 1840 } 1841 1842 static void encode_create_session(struct xdr_stream *xdr, 1843 const struct nfs41_create_session_args *args, 1844 struct compound_hdr *hdr) 1845 { 1846 __be32 *p; 1847 struct nfs_client *clp = args->client; 1848 struct rpc_clnt *clnt = clp->cl_rpcclient; 1849 struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id); 1850 u32 max_resp_sz_cached; 1851 1852 /* 1853 * Assumes OPEN is the biggest non-idempotent compound. 1854 * 2 is the verifier. 1855 */ 1856 max_resp_sz_cached = (NFS4_dec_open_sz + RPC_REPHDRSIZE + 2) 1857 * XDR_UNIT + RPC_MAX_AUTH_SIZE; 1858 1859 encode_op_hdr(xdr, OP_CREATE_SESSION, decode_create_session_maxsz, hdr); 1860 p = reserve_space(xdr, 16 + 2*28 + 20 + clnt->cl_nodelen + 12); 1861 p = xdr_encode_hyper(p, args->clientid); 1862 *p++ = cpu_to_be32(args->seqid); /*Sequence id */ 1863 *p++ = cpu_to_be32(args->flags); /*flags */ 1864 1865 /* Fore Channel */ 1866 *p++ = cpu_to_be32(0); /* header padding size */ 1867 *p++ = cpu_to_be32(args->fc_attrs.max_rqst_sz); /* max req size */ 1868 *p++ = cpu_to_be32(args->fc_attrs.max_resp_sz); /* max resp size */ 1869 *p++ = cpu_to_be32(max_resp_sz_cached); /* Max resp sz cached */ 1870 *p++ = cpu_to_be32(args->fc_attrs.max_ops); /* max operations */ 1871 *p++ = cpu_to_be32(args->fc_attrs.max_reqs); /* max requests */ 1872 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */ 1873 1874 /* Back Channel */ 1875 *p++ = cpu_to_be32(0); /* header padding size */ 1876 *p++ = cpu_to_be32(args->bc_attrs.max_rqst_sz); /* max req size */ 1877 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz); /* max resp size */ 1878 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz_cached); /* Max resp sz cached */ 1879 *p++ = cpu_to_be32(args->bc_attrs.max_ops); /* max operations */ 1880 *p++ = cpu_to_be32(args->bc_attrs.max_reqs); /* max requests */ 1881 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */ 1882 1883 *p++ = cpu_to_be32(args->cb_program); /* cb_program */ 1884 *p++ = cpu_to_be32(1); 1885 *p++ = cpu_to_be32(RPC_AUTH_UNIX); /* auth_sys */ 1886 1887 /* authsys_parms rfc1831 */ 1888 *p++ = cpu_to_be32(ktime_to_ns(nn->boot_time)); /* stamp */ 1889 p = xdr_encode_array(p, clnt->cl_nodename, clnt->cl_nodelen); 1890 *p++ = cpu_to_be32(0); /* UID */ 1891 *p++ = cpu_to_be32(0); /* GID */ 1892 *p = cpu_to_be32(0); /* No more gids */ 1893 } 1894 1895 static void encode_destroy_session(struct xdr_stream *xdr, 1896 const struct nfs4_session *session, 1897 struct compound_hdr *hdr) 1898 { 1899 encode_op_hdr(xdr, OP_DESTROY_SESSION, decode_destroy_session_maxsz, hdr); 1900 encode_opaque_fixed(xdr, session->sess_id.data, NFS4_MAX_SESSIONID_LEN); 1901 } 1902 1903 static void encode_destroy_clientid(struct xdr_stream *xdr, 1904 uint64_t clientid, 1905 struct compound_hdr *hdr) 1906 { 1907 encode_op_hdr(xdr, OP_DESTROY_CLIENTID, decode_destroy_clientid_maxsz, hdr); 1908 encode_uint64(xdr, clientid); 1909 } 1910 1911 static void encode_reclaim_complete(struct xdr_stream *xdr, 1912 const struct nfs41_reclaim_complete_args *args, 1913 struct compound_hdr *hdr) 1914 { 1915 encode_op_hdr(xdr, OP_RECLAIM_COMPLETE, decode_reclaim_complete_maxsz, hdr); 1916 encode_uint32(xdr, args->one_fs); 1917 } 1918 #endif /* CONFIG_NFS_V4_1 */ 1919 1920 static void encode_sequence(struct xdr_stream *xdr, 1921 const struct nfs4_sequence_args *args, 1922 struct compound_hdr *hdr) 1923 { 1924 #if defined(CONFIG_NFS_V4_1) 1925 struct nfs4_session *session; 1926 struct nfs4_slot_table *tp; 1927 struct nfs4_slot *slot = args->sa_slot; 1928 __be32 *p; 1929 1930 tp = slot->table; 1931 session = tp->session; 1932 if (!session) 1933 return; 1934 1935 encode_op_hdr(xdr, OP_SEQUENCE, decode_sequence_maxsz, hdr); 1936 1937 /* 1938 * Sessionid + seqid + slotid + max slotid + cache_this 1939 */ 1940 dprintk("%s: sessionid=%u:%u:%u:%u seqid=%d slotid=%d " 1941 "max_slotid=%d cache_this=%d\n", 1942 __func__, 1943 ((u32 *)session->sess_id.data)[0], 1944 ((u32 *)session->sess_id.data)[1], 1945 ((u32 *)session->sess_id.data)[2], 1946 ((u32 *)session->sess_id.data)[3], 1947 slot->seq_nr, slot->slot_nr, 1948 tp->highest_used_slotid, args->sa_cache_this); 1949 p = reserve_space(xdr, NFS4_MAX_SESSIONID_LEN + 16); 1950 p = xdr_encode_opaque_fixed(p, session->sess_id.data, NFS4_MAX_SESSIONID_LEN); 1951 *p++ = cpu_to_be32(slot->seq_nr); 1952 *p++ = cpu_to_be32(slot->slot_nr); 1953 *p++ = cpu_to_be32(tp->highest_used_slotid); 1954 *p = cpu_to_be32(args->sa_cache_this); 1955 #endif /* CONFIG_NFS_V4_1 */ 1956 } 1957 1958 #ifdef CONFIG_NFS_V4_1 1959 static void 1960 encode_getdeviceinfo(struct xdr_stream *xdr, 1961 const struct nfs4_getdeviceinfo_args *args, 1962 struct compound_hdr *hdr) 1963 { 1964 __be32 *p; 1965 1966 encode_op_hdr(xdr, OP_GETDEVICEINFO, decode_getdeviceinfo_maxsz, hdr); 1967 p = reserve_space(xdr, NFS4_DEVICEID4_SIZE + 4 + 4); 1968 p = xdr_encode_opaque_fixed(p, args->pdev->dev_id.data, 1969 NFS4_DEVICEID4_SIZE); 1970 *p++ = cpu_to_be32(args->pdev->layout_type); 1971 *p++ = cpu_to_be32(args->pdev->maxcount); /* gdia_maxcount */ 1972 1973 p = reserve_space(xdr, 4 + 4); 1974 *p++ = cpu_to_be32(1); /* bitmap length */ 1975 *p++ = cpu_to_be32(args->notify_types); 1976 } 1977 1978 static void 1979 encode_layoutget(struct xdr_stream *xdr, 1980 const struct nfs4_layoutget_args *args, 1981 struct compound_hdr *hdr) 1982 { 1983 __be32 *p; 1984 1985 encode_op_hdr(xdr, OP_LAYOUTGET, decode_layoutget_maxsz, hdr); 1986 p = reserve_space(xdr, 36); 1987 *p++ = cpu_to_be32(0); /* Signal layout available */ 1988 *p++ = cpu_to_be32(args->type); 1989 *p++ = cpu_to_be32(args->range.iomode); 1990 p = xdr_encode_hyper(p, args->range.offset); 1991 p = xdr_encode_hyper(p, args->range.length); 1992 p = xdr_encode_hyper(p, args->minlength); 1993 encode_nfs4_stateid(xdr, &args->stateid); 1994 encode_uint32(xdr, args->maxcount); 1995 1996 dprintk("%s: 1st type:0x%x iomode:%d off:%lu len:%lu mc:%d\n", 1997 __func__, 1998 args->type, 1999 args->range.iomode, 2000 (unsigned long)args->range.offset, 2001 (unsigned long)args->range.length, 2002 args->maxcount); 2003 } 2004 2005 static int 2006 encode_layoutcommit(struct xdr_stream *xdr, 2007 struct inode *inode, 2008 const struct nfs4_layoutcommit_args *args, 2009 struct compound_hdr *hdr) 2010 { 2011 __be32 *p; 2012 2013 dprintk("%s: lbw: %llu type: %d\n", __func__, args->lastbytewritten, 2014 NFS_SERVER(args->inode)->pnfs_curr_ld->id); 2015 2016 encode_op_hdr(xdr, OP_LAYOUTCOMMIT, decode_layoutcommit_maxsz, hdr); 2017 p = reserve_space(xdr, 20); 2018 /* Only whole file layouts */ 2019 p = xdr_encode_hyper(p, 0); /* offset */ 2020 p = xdr_encode_hyper(p, args->lastbytewritten + 1); /* length */ 2021 *p = cpu_to_be32(0); /* reclaim */ 2022 encode_nfs4_stateid(xdr, &args->stateid); 2023 if (args->lastbytewritten != U64_MAX) { 2024 p = reserve_space(xdr, 20); 2025 *p++ = cpu_to_be32(1); /* newoffset = TRUE */ 2026 p = xdr_encode_hyper(p, args->lastbytewritten); 2027 } else { 2028 p = reserve_space(xdr, 12); 2029 *p++ = cpu_to_be32(0); /* newoffset = FALSE */ 2030 } 2031 *p++ = cpu_to_be32(0); /* Never send time_modify_changed */ 2032 *p++ = cpu_to_be32(NFS_SERVER(args->inode)->pnfs_curr_ld->id);/* type */ 2033 2034 encode_uint32(xdr, args->layoutupdate_len); 2035 if (args->layoutupdate_pages) 2036 xdr_write_pages(xdr, args->layoutupdate_pages, 0, 2037 args->layoutupdate_len); 2038 2039 return 0; 2040 } 2041 2042 static void 2043 encode_layoutreturn(struct xdr_stream *xdr, 2044 const struct nfs4_layoutreturn_args *args, 2045 struct compound_hdr *hdr) 2046 { 2047 __be32 *p; 2048 2049 encode_op_hdr(xdr, OP_LAYOUTRETURN, decode_layoutreturn_maxsz, hdr); 2050 p = reserve_space(xdr, 16); 2051 *p++ = cpu_to_be32(0); /* reclaim. always 0 for now */ 2052 *p++ = cpu_to_be32(args->layout_type); 2053 *p++ = cpu_to_be32(args->range.iomode); 2054 *p = cpu_to_be32(RETURN_FILE); 2055 p = reserve_space(xdr, 16); 2056 p = xdr_encode_hyper(p, args->range.offset); 2057 p = xdr_encode_hyper(p, args->range.length); 2058 spin_lock(&args->inode->i_lock); 2059 encode_nfs4_stateid(xdr, &args->stateid); 2060 spin_unlock(&args->inode->i_lock); 2061 if (args->ld_private->ops && args->ld_private->ops->encode) 2062 args->ld_private->ops->encode(xdr, args, args->ld_private); 2063 else 2064 encode_uint32(xdr, 0); 2065 } 2066 2067 static int 2068 encode_secinfo_no_name(struct xdr_stream *xdr, 2069 const struct nfs41_secinfo_no_name_args *args, 2070 struct compound_hdr *hdr) 2071 { 2072 encode_op_hdr(xdr, OP_SECINFO_NO_NAME, decode_secinfo_no_name_maxsz, hdr); 2073 encode_uint32(xdr, args->style); 2074 return 0; 2075 } 2076 2077 static void encode_test_stateid(struct xdr_stream *xdr, 2078 const struct nfs41_test_stateid_args *args, 2079 struct compound_hdr *hdr) 2080 { 2081 encode_op_hdr(xdr, OP_TEST_STATEID, decode_test_stateid_maxsz, hdr); 2082 encode_uint32(xdr, 1); 2083 encode_nfs4_stateid(xdr, args->stateid); 2084 } 2085 2086 static void encode_free_stateid(struct xdr_stream *xdr, 2087 const struct nfs41_free_stateid_args *args, 2088 struct compound_hdr *hdr) 2089 { 2090 encode_op_hdr(xdr, OP_FREE_STATEID, decode_free_stateid_maxsz, hdr); 2091 encode_nfs4_stateid(xdr, &args->stateid); 2092 } 2093 #else 2094 static inline void 2095 encode_layoutreturn(struct xdr_stream *xdr, 2096 const struct nfs4_layoutreturn_args *args, 2097 struct compound_hdr *hdr) 2098 { 2099 } 2100 2101 static void 2102 encode_layoutget(struct xdr_stream *xdr, 2103 const struct nfs4_layoutget_args *args, 2104 struct compound_hdr *hdr) 2105 { 2106 } 2107 #endif /* CONFIG_NFS_V4_1 */ 2108 2109 /* 2110 * END OF "GENERIC" ENCODE ROUTINES. 2111 */ 2112 2113 static u32 nfs4_xdr_minorversion(const struct nfs4_sequence_args *args) 2114 { 2115 #if defined(CONFIG_NFS_V4_1) 2116 struct nfs4_session *session = args->sa_slot->table->session; 2117 if (session) 2118 return session->clp->cl_mvops->minor_version; 2119 #endif /* CONFIG_NFS_V4_1 */ 2120 return 0; 2121 } 2122 2123 /* 2124 * Encode an ACCESS request 2125 */ 2126 static void nfs4_xdr_enc_access(struct rpc_rqst *req, struct xdr_stream *xdr, 2127 const void *data) 2128 { 2129 const struct nfs4_accessargs *args = data; 2130 struct compound_hdr hdr = { 2131 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2132 }; 2133 2134 encode_compound_hdr(xdr, req, &hdr); 2135 encode_sequence(xdr, &args->seq_args, &hdr); 2136 encode_putfh(xdr, args->fh, &hdr); 2137 encode_access(xdr, args->access, &hdr); 2138 if (args->bitmask) 2139 encode_getfattr(xdr, args->bitmask, &hdr); 2140 encode_nops(&hdr); 2141 } 2142 2143 /* 2144 * Encode LOOKUP request 2145 */ 2146 static void nfs4_xdr_enc_lookup(struct rpc_rqst *req, struct xdr_stream *xdr, 2147 const void *data) 2148 { 2149 const struct nfs4_lookup_arg *args = data; 2150 struct compound_hdr hdr = { 2151 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2152 }; 2153 2154 encode_compound_hdr(xdr, req, &hdr); 2155 encode_sequence(xdr, &args->seq_args, &hdr); 2156 encode_putfh(xdr, args->dir_fh, &hdr); 2157 encode_lookup(xdr, args->name, &hdr); 2158 encode_getfh(xdr, &hdr); 2159 encode_getfattr(xdr, args->bitmask, &hdr); 2160 encode_nops(&hdr); 2161 } 2162 2163 /* 2164 * Encode LOOKUPP request 2165 */ 2166 static void nfs4_xdr_enc_lookupp(struct rpc_rqst *req, struct xdr_stream *xdr, 2167 const void *data) 2168 { 2169 const struct nfs4_lookupp_arg *args = data; 2170 struct compound_hdr hdr = { 2171 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2172 }; 2173 2174 encode_compound_hdr(xdr, req, &hdr); 2175 encode_sequence(xdr, &args->seq_args, &hdr); 2176 encode_putfh(xdr, args->fh, &hdr); 2177 encode_lookupp(xdr, &hdr); 2178 encode_getfh(xdr, &hdr); 2179 encode_getfattr(xdr, args->bitmask, &hdr); 2180 encode_nops(&hdr); 2181 } 2182 2183 /* 2184 * Encode LOOKUP_ROOT request 2185 */ 2186 static void nfs4_xdr_enc_lookup_root(struct rpc_rqst *req, 2187 struct xdr_stream *xdr, 2188 const void *data) 2189 { 2190 const struct nfs4_lookup_root_arg *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_putrootfh(xdr, &hdr); 2198 encode_getfh(xdr, &hdr); 2199 encode_getfattr(xdr, args->bitmask, &hdr); 2200 encode_nops(&hdr); 2201 } 2202 2203 /* 2204 * Encode REMOVE request 2205 */ 2206 static void nfs4_xdr_enc_remove(struct rpc_rqst *req, struct xdr_stream *xdr, 2207 const void *data) 2208 { 2209 const struct nfs_removeargs *args = data; 2210 struct compound_hdr hdr = { 2211 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2212 }; 2213 2214 encode_compound_hdr(xdr, req, &hdr); 2215 encode_sequence(xdr, &args->seq_args, &hdr); 2216 encode_putfh(xdr, args->fh, &hdr); 2217 encode_remove(xdr, &args->name, &hdr); 2218 encode_nops(&hdr); 2219 } 2220 2221 /* 2222 * Encode RENAME request 2223 */ 2224 static void nfs4_xdr_enc_rename(struct rpc_rqst *req, struct xdr_stream *xdr, 2225 const void *data) 2226 { 2227 const struct nfs_renameargs *args = data; 2228 struct compound_hdr hdr = { 2229 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2230 }; 2231 2232 encode_compound_hdr(xdr, req, &hdr); 2233 encode_sequence(xdr, &args->seq_args, &hdr); 2234 encode_putfh(xdr, args->old_dir, &hdr); 2235 encode_savefh(xdr, &hdr); 2236 encode_putfh(xdr, args->new_dir, &hdr); 2237 encode_rename(xdr, args->old_name, args->new_name, &hdr); 2238 encode_nops(&hdr); 2239 } 2240 2241 /* 2242 * Encode LINK request 2243 */ 2244 static void nfs4_xdr_enc_link(struct rpc_rqst *req, struct xdr_stream *xdr, 2245 const void *data) 2246 { 2247 const struct nfs4_link_arg *args = data; 2248 struct compound_hdr hdr = { 2249 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2250 }; 2251 2252 encode_compound_hdr(xdr, req, &hdr); 2253 encode_sequence(xdr, &args->seq_args, &hdr); 2254 encode_putfh(xdr, args->fh, &hdr); 2255 encode_savefh(xdr, &hdr); 2256 encode_putfh(xdr, args->dir_fh, &hdr); 2257 encode_link(xdr, args->name, &hdr); 2258 encode_restorefh(xdr, &hdr); 2259 encode_getfattr(xdr, args->bitmask, &hdr); 2260 encode_nops(&hdr); 2261 } 2262 2263 /* 2264 * Encode CREATE request 2265 */ 2266 static void nfs4_xdr_enc_create(struct rpc_rqst *req, struct xdr_stream *xdr, 2267 const void *data) 2268 { 2269 const struct nfs4_create_arg *args = data; 2270 struct compound_hdr hdr = { 2271 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2272 }; 2273 2274 encode_compound_hdr(xdr, req, &hdr); 2275 encode_sequence(xdr, &args->seq_args, &hdr); 2276 encode_putfh(xdr, args->dir_fh, &hdr); 2277 encode_create(xdr, args, &hdr); 2278 encode_getfh(xdr, &hdr); 2279 encode_getfattr(xdr, args->bitmask, &hdr); 2280 encode_nops(&hdr); 2281 } 2282 2283 /* 2284 * Encode SYMLINK request 2285 */ 2286 static void nfs4_xdr_enc_symlink(struct rpc_rqst *req, struct xdr_stream *xdr, 2287 const void *data) 2288 { 2289 const struct nfs4_create_arg *args = data; 2290 2291 nfs4_xdr_enc_create(req, xdr, args); 2292 } 2293 2294 /* 2295 * Encode GETATTR request 2296 */ 2297 static void nfs4_xdr_enc_getattr(struct rpc_rqst *req, struct xdr_stream *xdr, 2298 const void *data) 2299 { 2300 const struct nfs4_getattr_arg *args = data; 2301 struct compound_hdr hdr = { 2302 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2303 }; 2304 2305 encode_compound_hdr(xdr, req, &hdr); 2306 encode_sequence(xdr, &args->seq_args, &hdr); 2307 encode_putfh(xdr, args->fh, &hdr); 2308 encode_getfattr(xdr, args->bitmask, &hdr); 2309 encode_nops(&hdr); 2310 } 2311 2312 /* 2313 * Encode a CLOSE request 2314 */ 2315 static void nfs4_xdr_enc_close(struct rpc_rqst *req, struct xdr_stream *xdr, 2316 const void *data) 2317 { 2318 const struct nfs_closeargs *args = data; 2319 struct compound_hdr hdr = { 2320 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2321 }; 2322 2323 encode_compound_hdr(xdr, req, &hdr); 2324 encode_sequence(xdr, &args->seq_args, &hdr); 2325 encode_putfh(xdr, args->fh, &hdr); 2326 if (args->lr_args) 2327 encode_layoutreturn(xdr, args->lr_args, &hdr); 2328 if (args->bitmask != NULL) 2329 encode_getfattr(xdr, args->bitmask, &hdr); 2330 encode_close(xdr, args, &hdr); 2331 encode_nops(&hdr); 2332 } 2333 2334 /* 2335 * Encode an OPEN request 2336 */ 2337 static void nfs4_xdr_enc_open(struct rpc_rqst *req, struct xdr_stream *xdr, 2338 const void *data) 2339 { 2340 const struct nfs_openargs *args = data; 2341 struct compound_hdr hdr = { 2342 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2343 }; 2344 2345 encode_compound_hdr(xdr, req, &hdr); 2346 encode_sequence(xdr, &args->seq_args, &hdr); 2347 encode_putfh(xdr, args->fh, &hdr); 2348 encode_open(xdr, args, &hdr); 2349 encode_getfh(xdr, &hdr); 2350 if (args->access) 2351 encode_access(xdr, args->access, &hdr); 2352 encode_getfattr_open(xdr, args->bitmask, args->open_bitmap, &hdr); 2353 if (args->lg_args) { 2354 encode_layoutget(xdr, args->lg_args, &hdr); 2355 rpc_prepare_reply_pages(req, args->lg_args->layout.pages, 0, 2356 args->lg_args->layout.pglen, 2357 hdr.replen - pagepad_maxsz); 2358 } 2359 encode_nops(&hdr); 2360 } 2361 2362 /* 2363 * Encode an OPEN_CONFIRM request 2364 */ 2365 static void nfs4_xdr_enc_open_confirm(struct rpc_rqst *req, 2366 struct xdr_stream *xdr, 2367 const void *data) 2368 { 2369 const struct nfs_open_confirmargs *args = data; 2370 struct compound_hdr hdr = { 2371 .nops = 0, 2372 }; 2373 2374 encode_compound_hdr(xdr, req, &hdr); 2375 encode_putfh(xdr, args->fh, &hdr); 2376 encode_open_confirm(xdr, args, &hdr); 2377 encode_nops(&hdr); 2378 } 2379 2380 /* 2381 * Encode an OPEN request with no attributes. 2382 */ 2383 static void nfs4_xdr_enc_open_noattr(struct rpc_rqst *req, 2384 struct xdr_stream *xdr, 2385 const void *data) 2386 { 2387 const struct nfs_openargs *args = data; 2388 struct compound_hdr hdr = { 2389 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2390 }; 2391 2392 encode_compound_hdr(xdr, req, &hdr); 2393 encode_sequence(xdr, &args->seq_args, &hdr); 2394 encode_putfh(xdr, args->fh, &hdr); 2395 encode_open(xdr, args, &hdr); 2396 if (args->access) 2397 encode_access(xdr, args->access, &hdr); 2398 encode_getfattr_open(xdr, args->bitmask, args->open_bitmap, &hdr); 2399 if (args->lg_args) { 2400 encode_layoutget(xdr, args->lg_args, &hdr); 2401 rpc_prepare_reply_pages(req, args->lg_args->layout.pages, 0, 2402 args->lg_args->layout.pglen, 2403 hdr.replen - pagepad_maxsz); 2404 } 2405 encode_nops(&hdr); 2406 } 2407 2408 /* 2409 * Encode an OPEN_DOWNGRADE request 2410 */ 2411 static void nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req, 2412 struct xdr_stream *xdr, 2413 const void *data) 2414 { 2415 const struct nfs_closeargs *args = data; 2416 struct compound_hdr hdr = { 2417 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2418 }; 2419 2420 encode_compound_hdr(xdr, req, &hdr); 2421 encode_sequence(xdr, &args->seq_args, &hdr); 2422 encode_putfh(xdr, args->fh, &hdr); 2423 if (args->lr_args) 2424 encode_layoutreturn(xdr, args->lr_args, &hdr); 2425 encode_open_downgrade(xdr, args, &hdr); 2426 encode_nops(&hdr); 2427 } 2428 2429 /* 2430 * Encode a LOCK request 2431 */ 2432 static void nfs4_xdr_enc_lock(struct rpc_rqst *req, struct xdr_stream *xdr, 2433 const void *data) 2434 { 2435 const struct nfs_lock_args *args = data; 2436 struct compound_hdr hdr = { 2437 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2438 }; 2439 2440 encode_compound_hdr(xdr, req, &hdr); 2441 encode_sequence(xdr, &args->seq_args, &hdr); 2442 encode_putfh(xdr, args->fh, &hdr); 2443 encode_lock(xdr, args, &hdr); 2444 encode_nops(&hdr); 2445 } 2446 2447 /* 2448 * Encode a LOCKT request 2449 */ 2450 static void nfs4_xdr_enc_lockt(struct rpc_rqst *req, struct xdr_stream *xdr, 2451 const void *data) 2452 { 2453 const struct nfs_lockt_args *args = data; 2454 struct compound_hdr hdr = { 2455 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2456 }; 2457 2458 encode_compound_hdr(xdr, req, &hdr); 2459 encode_sequence(xdr, &args->seq_args, &hdr); 2460 encode_putfh(xdr, args->fh, &hdr); 2461 encode_lockt(xdr, args, &hdr); 2462 encode_nops(&hdr); 2463 } 2464 2465 /* 2466 * Encode a LOCKU request 2467 */ 2468 static void nfs4_xdr_enc_locku(struct rpc_rqst *req, struct xdr_stream *xdr, 2469 const void *data) 2470 { 2471 const struct nfs_locku_args *args = data; 2472 struct compound_hdr hdr = { 2473 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2474 }; 2475 2476 encode_compound_hdr(xdr, req, &hdr); 2477 encode_sequence(xdr, &args->seq_args, &hdr); 2478 encode_putfh(xdr, args->fh, &hdr); 2479 encode_locku(xdr, args, &hdr); 2480 encode_nops(&hdr); 2481 } 2482 2483 static void nfs4_xdr_enc_release_lockowner(struct rpc_rqst *req, 2484 struct xdr_stream *xdr, 2485 const void *data) 2486 { 2487 const struct nfs_release_lockowner_args *args = data; 2488 struct compound_hdr hdr = { 2489 .minorversion = 0, 2490 }; 2491 2492 encode_compound_hdr(xdr, req, &hdr); 2493 encode_release_lockowner(xdr, &args->lock_owner, &hdr); 2494 encode_nops(&hdr); 2495 } 2496 2497 /* 2498 * Encode a READLINK request 2499 */ 2500 static void nfs4_xdr_enc_readlink(struct rpc_rqst *req, struct xdr_stream *xdr, 2501 const void *data) 2502 { 2503 const struct nfs4_readlink *args = data; 2504 struct compound_hdr hdr = { 2505 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2506 }; 2507 2508 encode_compound_hdr(xdr, req, &hdr); 2509 encode_sequence(xdr, &args->seq_args, &hdr); 2510 encode_putfh(xdr, args->fh, &hdr); 2511 encode_readlink(xdr, args, req, &hdr); 2512 2513 rpc_prepare_reply_pages(req, args->pages, args->pgbase, 2514 args->pglen, hdr.replen - pagepad_maxsz); 2515 encode_nops(&hdr); 2516 } 2517 2518 /* 2519 * Encode a READDIR request 2520 */ 2521 static void nfs4_xdr_enc_readdir(struct rpc_rqst *req, struct xdr_stream *xdr, 2522 const void *data) 2523 { 2524 const struct nfs4_readdir_arg *args = data; 2525 struct compound_hdr hdr = { 2526 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2527 }; 2528 2529 encode_compound_hdr(xdr, req, &hdr); 2530 encode_sequence(xdr, &args->seq_args, &hdr); 2531 encode_putfh(xdr, args->fh, &hdr); 2532 encode_readdir(xdr, args, req, &hdr); 2533 2534 rpc_prepare_reply_pages(req, args->pages, args->pgbase, 2535 args->count, hdr.replen - pagepad_maxsz); 2536 encode_nops(&hdr); 2537 } 2538 2539 /* 2540 * Encode a READ request 2541 */ 2542 static void nfs4_xdr_enc_read(struct rpc_rqst *req, struct xdr_stream *xdr, 2543 const void *data) 2544 { 2545 const struct nfs_pgio_args *args = data; 2546 struct compound_hdr hdr = { 2547 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2548 }; 2549 2550 encode_compound_hdr(xdr, req, &hdr); 2551 encode_sequence(xdr, &args->seq_args, &hdr); 2552 encode_putfh(xdr, args->fh, &hdr); 2553 encode_read(xdr, args, &hdr); 2554 2555 rpc_prepare_reply_pages(req, args->pages, args->pgbase, 2556 args->count, hdr.replen - pagepad_maxsz); 2557 req->rq_rcv_buf.flags |= XDRBUF_READ; 2558 encode_nops(&hdr); 2559 } 2560 2561 /* 2562 * Encode an SETATTR request 2563 */ 2564 static void nfs4_xdr_enc_setattr(struct rpc_rqst *req, struct xdr_stream *xdr, 2565 const void *data) 2566 { 2567 const struct nfs_setattrargs *args = data; 2568 struct compound_hdr hdr = { 2569 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2570 }; 2571 2572 encode_compound_hdr(xdr, req, &hdr); 2573 encode_sequence(xdr, &args->seq_args, &hdr); 2574 encode_putfh(xdr, args->fh, &hdr); 2575 encode_setattr(xdr, args, args->server, &hdr); 2576 encode_getfattr(xdr, args->bitmask, &hdr); 2577 encode_nops(&hdr); 2578 } 2579 2580 /* 2581 * Encode a GETACL request 2582 */ 2583 static void nfs4_xdr_enc_getacl(struct rpc_rqst *req, struct xdr_stream *xdr, 2584 const void *data) 2585 { 2586 const struct nfs_getaclargs *args = data; 2587 struct compound_hdr hdr = { 2588 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2589 }; 2590 const __u32 nfs4_acl_bitmap[1] = { 2591 [0] = FATTR4_WORD0_ACL, 2592 }; 2593 uint32_t replen; 2594 2595 encode_compound_hdr(xdr, req, &hdr); 2596 encode_sequence(xdr, &args->seq_args, &hdr); 2597 encode_putfh(xdr, args->fh, &hdr); 2598 replen = hdr.replen + op_decode_hdr_maxsz; 2599 encode_getattr(xdr, nfs4_acl_bitmap, NULL, 2600 ARRAY_SIZE(nfs4_acl_bitmap), &hdr); 2601 2602 rpc_prepare_reply_pages(req, args->acl_pages, 0, 2603 args->acl_len, replen); 2604 encode_nops(&hdr); 2605 } 2606 2607 /* 2608 * Encode a WRITE request 2609 */ 2610 static void nfs4_xdr_enc_write(struct rpc_rqst *req, struct xdr_stream *xdr, 2611 const void *data) 2612 { 2613 const struct nfs_pgio_args *args = data; 2614 struct compound_hdr hdr = { 2615 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2616 }; 2617 2618 encode_compound_hdr(xdr, req, &hdr); 2619 encode_sequence(xdr, &args->seq_args, &hdr); 2620 encode_putfh(xdr, args->fh, &hdr); 2621 encode_write(xdr, args, &hdr); 2622 req->rq_snd_buf.flags |= XDRBUF_WRITE; 2623 if (args->bitmask) 2624 encode_getfattr(xdr, args->bitmask, &hdr); 2625 encode_nops(&hdr); 2626 } 2627 2628 /* 2629 * a COMMIT request 2630 */ 2631 static void nfs4_xdr_enc_commit(struct rpc_rqst *req, struct xdr_stream *xdr, 2632 const void *data) 2633 { 2634 const struct nfs_commitargs *args = data; 2635 struct compound_hdr hdr = { 2636 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2637 }; 2638 2639 encode_compound_hdr(xdr, req, &hdr); 2640 encode_sequence(xdr, &args->seq_args, &hdr); 2641 encode_putfh(xdr, args->fh, &hdr); 2642 encode_commit(xdr, args, &hdr); 2643 encode_nops(&hdr); 2644 } 2645 2646 /* 2647 * FSINFO request 2648 */ 2649 static void nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr, 2650 const void *data) 2651 { 2652 const struct nfs4_fsinfo_arg *args = data; 2653 struct compound_hdr hdr = { 2654 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2655 }; 2656 2657 encode_compound_hdr(xdr, req, &hdr); 2658 encode_sequence(xdr, &args->seq_args, &hdr); 2659 encode_putfh(xdr, args->fh, &hdr); 2660 encode_fsinfo(xdr, args->bitmask, &hdr); 2661 encode_nops(&hdr); 2662 } 2663 2664 /* 2665 * a PATHCONF request 2666 */ 2667 static void nfs4_xdr_enc_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr, 2668 const void *data) 2669 { 2670 const struct nfs4_pathconf_arg *args = data; 2671 struct compound_hdr hdr = { 2672 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2673 }; 2674 2675 encode_compound_hdr(xdr, req, &hdr); 2676 encode_sequence(xdr, &args->seq_args, &hdr); 2677 encode_putfh(xdr, args->fh, &hdr); 2678 encode_getattr(xdr, nfs4_pathconf_bitmap, args->bitmask, 2679 ARRAY_SIZE(nfs4_pathconf_bitmap), &hdr); 2680 encode_nops(&hdr); 2681 } 2682 2683 /* 2684 * a STATFS request 2685 */ 2686 static void nfs4_xdr_enc_statfs(struct rpc_rqst *req, struct xdr_stream *xdr, 2687 const void *data) 2688 { 2689 const struct nfs4_statfs_arg *args = data; 2690 struct compound_hdr hdr = { 2691 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2692 }; 2693 2694 encode_compound_hdr(xdr, req, &hdr); 2695 encode_sequence(xdr, &args->seq_args, &hdr); 2696 encode_putfh(xdr, args->fh, &hdr); 2697 encode_getattr(xdr, nfs4_statfs_bitmap, args->bitmask, 2698 ARRAY_SIZE(nfs4_statfs_bitmap), &hdr); 2699 encode_nops(&hdr); 2700 } 2701 2702 /* 2703 * GETATTR_BITMAP request 2704 */ 2705 static void nfs4_xdr_enc_server_caps(struct rpc_rqst *req, 2706 struct xdr_stream *xdr, 2707 const void *data) 2708 { 2709 const struct nfs4_server_caps_arg *args = data; 2710 const u32 *bitmask = args->bitmask; 2711 struct compound_hdr hdr = { 2712 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2713 }; 2714 2715 encode_compound_hdr(xdr, req, &hdr); 2716 encode_sequence(xdr, &args->seq_args, &hdr); 2717 encode_putfh(xdr, args->fhandle, &hdr); 2718 encode_getattr(xdr, bitmask, NULL, 3, &hdr); 2719 encode_nops(&hdr); 2720 } 2721 2722 /* 2723 * a RENEW request 2724 */ 2725 static void nfs4_xdr_enc_renew(struct rpc_rqst *req, struct xdr_stream *xdr, 2726 const void *data) 2727 2728 { 2729 const struct nfs_client *clp = data; 2730 struct compound_hdr hdr = { 2731 .nops = 0, 2732 }; 2733 2734 encode_compound_hdr(xdr, req, &hdr); 2735 encode_renew(xdr, clp->cl_clientid, &hdr); 2736 encode_nops(&hdr); 2737 } 2738 2739 /* 2740 * a SETCLIENTID request 2741 */ 2742 static void nfs4_xdr_enc_setclientid(struct rpc_rqst *req, 2743 struct xdr_stream *xdr, 2744 const void *data) 2745 { 2746 const struct nfs4_setclientid *sc = data; 2747 struct compound_hdr hdr = { 2748 .nops = 0, 2749 }; 2750 2751 encode_compound_hdr(xdr, req, &hdr); 2752 encode_setclientid(xdr, sc, &hdr); 2753 encode_nops(&hdr); 2754 } 2755 2756 /* 2757 * a SETCLIENTID_CONFIRM request 2758 */ 2759 static void nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req, 2760 struct xdr_stream *xdr, 2761 const void *data) 2762 { 2763 const struct nfs4_setclientid_res *arg = data; 2764 struct compound_hdr hdr = { 2765 .nops = 0, 2766 }; 2767 2768 encode_compound_hdr(xdr, req, &hdr); 2769 encode_setclientid_confirm(xdr, arg, &hdr); 2770 encode_nops(&hdr); 2771 } 2772 2773 /* 2774 * DELEGRETURN request 2775 */ 2776 static void nfs4_xdr_enc_delegreturn(struct rpc_rqst *req, 2777 struct xdr_stream *xdr, 2778 const void *data) 2779 { 2780 const struct nfs4_delegreturnargs *args = data; 2781 struct compound_hdr hdr = { 2782 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2783 }; 2784 2785 encode_compound_hdr(xdr, req, &hdr); 2786 encode_sequence(xdr, &args->seq_args, &hdr); 2787 encode_putfh(xdr, args->fhandle, &hdr); 2788 if (args->lr_args) 2789 encode_layoutreturn(xdr, args->lr_args, &hdr); 2790 if (args->bitmask) 2791 encode_getfattr(xdr, args->bitmask, &hdr); 2792 encode_delegreturn(xdr, args->stateid, &hdr); 2793 encode_nops(&hdr); 2794 } 2795 2796 /* 2797 * Encode FS_LOCATIONS request 2798 */ 2799 static void nfs4_xdr_enc_fs_locations(struct rpc_rqst *req, 2800 struct xdr_stream *xdr, 2801 const void *data) 2802 { 2803 const struct nfs4_fs_locations_arg *args = data; 2804 struct compound_hdr hdr = { 2805 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2806 }; 2807 uint32_t replen; 2808 2809 encode_compound_hdr(xdr, req, &hdr); 2810 encode_sequence(xdr, &args->seq_args, &hdr); 2811 if (args->migration) { 2812 encode_putfh(xdr, args->fh, &hdr); 2813 replen = hdr.replen; 2814 encode_fs_locations(xdr, args->bitmask, &hdr); 2815 if (args->renew) 2816 encode_renew(xdr, args->clientid, &hdr); 2817 } else { 2818 encode_putfh(xdr, args->dir_fh, &hdr); 2819 encode_lookup(xdr, args->name, &hdr); 2820 replen = hdr.replen; 2821 encode_fs_locations(xdr, args->bitmask, &hdr); 2822 } 2823 2824 rpc_prepare_reply_pages(req, (struct page **)&args->page, 0, 2825 PAGE_SIZE, replen); 2826 encode_nops(&hdr); 2827 } 2828 2829 /* 2830 * Encode SECINFO request 2831 */ 2832 static void nfs4_xdr_enc_secinfo(struct rpc_rqst *req, 2833 struct xdr_stream *xdr, 2834 const void *data) 2835 { 2836 const struct nfs4_secinfo_arg *args = data; 2837 struct compound_hdr hdr = { 2838 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2839 }; 2840 2841 encode_compound_hdr(xdr, req, &hdr); 2842 encode_sequence(xdr, &args->seq_args, &hdr); 2843 encode_putfh(xdr, args->dir_fh, &hdr); 2844 encode_secinfo(xdr, args->name, &hdr); 2845 encode_nops(&hdr); 2846 } 2847 2848 /* 2849 * Encode FSID_PRESENT request 2850 */ 2851 static void nfs4_xdr_enc_fsid_present(struct rpc_rqst *req, 2852 struct xdr_stream *xdr, 2853 const void *data) 2854 { 2855 const struct nfs4_fsid_present_arg *args = data; 2856 struct compound_hdr hdr = { 2857 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2858 }; 2859 2860 encode_compound_hdr(xdr, req, &hdr); 2861 encode_sequence(xdr, &args->seq_args, &hdr); 2862 encode_putfh(xdr, args->fh, &hdr); 2863 encode_getfh(xdr, &hdr); 2864 if (args->renew) 2865 encode_renew(xdr, args->clientid, &hdr); 2866 encode_nops(&hdr); 2867 } 2868 2869 #if defined(CONFIG_NFS_V4_1) 2870 /* 2871 * BIND_CONN_TO_SESSION request 2872 */ 2873 static void nfs4_xdr_enc_bind_conn_to_session(struct rpc_rqst *req, 2874 struct xdr_stream *xdr, 2875 const void *data) 2876 { 2877 const struct nfs41_bind_conn_to_session_args *args = data; 2878 struct compound_hdr hdr = { 2879 .minorversion = args->client->cl_mvops->minor_version, 2880 }; 2881 2882 encode_compound_hdr(xdr, req, &hdr); 2883 encode_bind_conn_to_session(xdr, args, &hdr); 2884 encode_nops(&hdr); 2885 } 2886 2887 /* 2888 * EXCHANGE_ID request 2889 */ 2890 static void nfs4_xdr_enc_exchange_id(struct rpc_rqst *req, 2891 struct xdr_stream *xdr, 2892 const void *data) 2893 { 2894 const struct nfs41_exchange_id_args *args = data; 2895 struct compound_hdr hdr = { 2896 .minorversion = args->client->cl_mvops->minor_version, 2897 }; 2898 2899 encode_compound_hdr(xdr, req, &hdr); 2900 encode_exchange_id(xdr, args, &hdr); 2901 encode_nops(&hdr); 2902 } 2903 2904 /* 2905 * a CREATE_SESSION request 2906 */ 2907 static void nfs4_xdr_enc_create_session(struct rpc_rqst *req, 2908 struct xdr_stream *xdr, 2909 const void *data) 2910 { 2911 const struct nfs41_create_session_args *args = data; 2912 struct compound_hdr hdr = { 2913 .minorversion = args->client->cl_mvops->minor_version, 2914 }; 2915 2916 encode_compound_hdr(xdr, req, &hdr); 2917 encode_create_session(xdr, args, &hdr); 2918 encode_nops(&hdr); 2919 } 2920 2921 /* 2922 * a DESTROY_SESSION request 2923 */ 2924 static void nfs4_xdr_enc_destroy_session(struct rpc_rqst *req, 2925 struct xdr_stream *xdr, 2926 const void *data) 2927 { 2928 const struct nfs4_session *session = data; 2929 struct compound_hdr hdr = { 2930 .minorversion = session->clp->cl_mvops->minor_version, 2931 }; 2932 2933 encode_compound_hdr(xdr, req, &hdr); 2934 encode_destroy_session(xdr, session, &hdr); 2935 encode_nops(&hdr); 2936 } 2937 2938 /* 2939 * a DESTROY_CLIENTID request 2940 */ 2941 static void nfs4_xdr_enc_destroy_clientid(struct rpc_rqst *req, 2942 struct xdr_stream *xdr, 2943 const void *data) 2944 { 2945 const struct nfs_client *clp = data; 2946 struct compound_hdr hdr = { 2947 .minorversion = clp->cl_mvops->minor_version, 2948 }; 2949 2950 encode_compound_hdr(xdr, req, &hdr); 2951 encode_destroy_clientid(xdr, clp->cl_clientid, &hdr); 2952 encode_nops(&hdr); 2953 } 2954 2955 /* 2956 * a SEQUENCE request 2957 */ 2958 static void nfs4_xdr_enc_sequence(struct rpc_rqst *req, struct xdr_stream *xdr, 2959 const void *data) 2960 { 2961 const struct nfs4_sequence_args *args = data; 2962 struct compound_hdr hdr = { 2963 .minorversion = nfs4_xdr_minorversion(args), 2964 }; 2965 2966 encode_compound_hdr(xdr, req, &hdr); 2967 encode_sequence(xdr, args, &hdr); 2968 encode_nops(&hdr); 2969 } 2970 2971 #endif 2972 2973 /* 2974 * a GET_LEASE_TIME request 2975 */ 2976 static void nfs4_xdr_enc_get_lease_time(struct rpc_rqst *req, 2977 struct xdr_stream *xdr, 2978 const void *data) 2979 { 2980 const struct nfs4_get_lease_time_args *args = data; 2981 struct compound_hdr hdr = { 2982 .minorversion = nfs4_xdr_minorversion(&args->la_seq_args), 2983 }; 2984 const u32 lease_bitmap[3] = { FATTR4_WORD0_LEASE_TIME }; 2985 2986 encode_compound_hdr(xdr, req, &hdr); 2987 encode_sequence(xdr, &args->la_seq_args, &hdr); 2988 encode_putrootfh(xdr, &hdr); 2989 encode_fsinfo(xdr, lease_bitmap, &hdr); 2990 encode_nops(&hdr); 2991 } 2992 2993 #ifdef CONFIG_NFS_V4_1 2994 2995 /* 2996 * a RECLAIM_COMPLETE request 2997 */ 2998 static void nfs4_xdr_enc_reclaim_complete(struct rpc_rqst *req, 2999 struct xdr_stream *xdr, 3000 const void *data) 3001 { 3002 const struct nfs41_reclaim_complete_args *args = data; 3003 struct compound_hdr hdr = { 3004 .minorversion = nfs4_xdr_minorversion(&args->seq_args) 3005 }; 3006 3007 encode_compound_hdr(xdr, req, &hdr); 3008 encode_sequence(xdr, &args->seq_args, &hdr); 3009 encode_reclaim_complete(xdr, args, &hdr); 3010 encode_nops(&hdr); 3011 } 3012 3013 /* 3014 * Encode GETDEVICEINFO request 3015 */ 3016 static void nfs4_xdr_enc_getdeviceinfo(struct rpc_rqst *req, 3017 struct xdr_stream *xdr, 3018 const void *data) 3019 { 3020 const struct nfs4_getdeviceinfo_args *args = data; 3021 struct compound_hdr hdr = { 3022 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 3023 }; 3024 uint32_t replen; 3025 3026 encode_compound_hdr(xdr, req, &hdr); 3027 encode_sequence(xdr, &args->seq_args, &hdr); 3028 3029 replen = hdr.replen + op_decode_hdr_maxsz + 2; 3030 3031 encode_getdeviceinfo(xdr, args, &hdr); 3032 3033 /* set up reply kvec. device_addr4 opaque data is read into the 3034 * pages */ 3035 rpc_prepare_reply_pages(req, args->pdev->pages, args->pdev->pgbase, 3036 args->pdev->pglen, replen); 3037 encode_nops(&hdr); 3038 } 3039 3040 /* 3041 * Encode LAYOUTGET request 3042 */ 3043 static void nfs4_xdr_enc_layoutget(struct rpc_rqst *req, 3044 struct xdr_stream *xdr, 3045 const void *data) 3046 { 3047 const struct nfs4_layoutget_args *args = data; 3048 struct compound_hdr hdr = { 3049 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 3050 }; 3051 3052 encode_compound_hdr(xdr, req, &hdr); 3053 encode_sequence(xdr, &args->seq_args, &hdr); 3054 encode_putfh(xdr, NFS_FH(args->inode), &hdr); 3055 encode_layoutget(xdr, args, &hdr); 3056 3057 rpc_prepare_reply_pages(req, args->layout.pages, 0, 3058 args->layout.pglen, hdr.replen - pagepad_maxsz); 3059 encode_nops(&hdr); 3060 } 3061 3062 /* 3063 * Encode LAYOUTCOMMIT request 3064 */ 3065 static void nfs4_xdr_enc_layoutcommit(struct rpc_rqst *req, 3066 struct xdr_stream *xdr, 3067 const void *priv) 3068 { 3069 const struct nfs4_layoutcommit_args *args = priv; 3070 struct nfs4_layoutcommit_data *data = 3071 container_of(args, struct nfs4_layoutcommit_data, args); 3072 struct compound_hdr hdr = { 3073 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 3074 }; 3075 3076 encode_compound_hdr(xdr, req, &hdr); 3077 encode_sequence(xdr, &args->seq_args, &hdr); 3078 encode_putfh(xdr, NFS_FH(args->inode), &hdr); 3079 encode_layoutcommit(xdr, data->args.inode, args, &hdr); 3080 encode_getfattr(xdr, args->bitmask, &hdr); 3081 encode_nops(&hdr); 3082 } 3083 3084 /* 3085 * Encode LAYOUTRETURN request 3086 */ 3087 static void nfs4_xdr_enc_layoutreturn(struct rpc_rqst *req, 3088 struct xdr_stream *xdr, 3089 const void *data) 3090 { 3091 const struct nfs4_layoutreturn_args *args = data; 3092 struct compound_hdr hdr = { 3093 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 3094 }; 3095 3096 encode_compound_hdr(xdr, req, &hdr); 3097 encode_sequence(xdr, &args->seq_args, &hdr); 3098 encode_putfh(xdr, NFS_FH(args->inode), &hdr); 3099 encode_layoutreturn(xdr, args, &hdr); 3100 encode_nops(&hdr); 3101 } 3102 3103 /* 3104 * Encode SECINFO_NO_NAME request 3105 */ 3106 static void nfs4_xdr_enc_secinfo_no_name(struct rpc_rqst *req, 3107 struct xdr_stream *xdr, 3108 const void *data) 3109 { 3110 const struct nfs41_secinfo_no_name_args *args = data; 3111 struct compound_hdr hdr = { 3112 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 3113 }; 3114 3115 encode_compound_hdr(xdr, req, &hdr); 3116 encode_sequence(xdr, &args->seq_args, &hdr); 3117 encode_putrootfh(xdr, &hdr); 3118 encode_secinfo_no_name(xdr, args, &hdr); 3119 encode_nops(&hdr); 3120 } 3121 3122 /* 3123 * Encode TEST_STATEID request 3124 */ 3125 static void nfs4_xdr_enc_test_stateid(struct rpc_rqst *req, 3126 struct xdr_stream *xdr, 3127 const void *data) 3128 { 3129 const struct nfs41_test_stateid_args *args = data; 3130 struct compound_hdr hdr = { 3131 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 3132 }; 3133 3134 encode_compound_hdr(xdr, req, &hdr); 3135 encode_sequence(xdr, &args->seq_args, &hdr); 3136 encode_test_stateid(xdr, args, &hdr); 3137 encode_nops(&hdr); 3138 } 3139 3140 /* 3141 * Encode FREE_STATEID request 3142 */ 3143 static void nfs4_xdr_enc_free_stateid(struct rpc_rqst *req, 3144 struct xdr_stream *xdr, 3145 const void *data) 3146 { 3147 const struct nfs41_free_stateid_args *args = data; 3148 struct compound_hdr hdr = { 3149 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 3150 }; 3151 3152 encode_compound_hdr(xdr, req, &hdr); 3153 encode_sequence(xdr, &args->seq_args, &hdr); 3154 encode_free_stateid(xdr, args, &hdr); 3155 encode_nops(&hdr); 3156 } 3157 #endif /* CONFIG_NFS_V4_1 */ 3158 3159 static int decode_opaque_inline(struct xdr_stream *xdr, unsigned int *len, char **string) 3160 { 3161 ssize_t ret = xdr_stream_decode_opaque_inline(xdr, (void **)string, 3162 NFS4_OPAQUE_LIMIT); 3163 if (unlikely(ret < 0)) 3164 return -EIO; 3165 *len = ret; 3166 return 0; 3167 } 3168 3169 static int decode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr) 3170 { 3171 __be32 *p; 3172 3173 p = xdr_inline_decode(xdr, 8); 3174 if (unlikely(!p)) 3175 return -EIO; 3176 hdr->status = be32_to_cpup(p++); 3177 hdr->taglen = be32_to_cpup(p); 3178 3179 p = xdr_inline_decode(xdr, hdr->taglen + 4); 3180 if (unlikely(!p)) 3181 return -EIO; 3182 hdr->tag = (char *)p; 3183 p += XDR_QUADLEN(hdr->taglen); 3184 hdr->nops = be32_to_cpup(p); 3185 if (unlikely(hdr->nops < 1)) 3186 return nfs4_stat_to_errno(hdr->status); 3187 return 0; 3188 } 3189 3190 static bool __decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected, 3191 int *nfs_retval) 3192 { 3193 __be32 *p; 3194 uint32_t opnum; 3195 int32_t nfserr; 3196 3197 p = xdr_inline_decode(xdr, 8); 3198 if (unlikely(!p)) 3199 goto out_overflow; 3200 opnum = be32_to_cpup(p++); 3201 if (unlikely(opnum != expected)) 3202 goto out_bad_operation; 3203 if (unlikely(*p != cpu_to_be32(NFS_OK))) 3204 goto out_status; 3205 *nfs_retval = 0; 3206 return true; 3207 out_status: 3208 nfserr = be32_to_cpup(p); 3209 trace_nfs4_xdr_status(xdr, opnum, nfserr); 3210 *nfs_retval = nfs4_stat_to_errno(nfserr); 3211 return true; 3212 out_bad_operation: 3213 trace_nfs4_xdr_bad_operation(xdr, opnum, expected); 3214 *nfs_retval = -EREMOTEIO; 3215 return false; 3216 out_overflow: 3217 *nfs_retval = -EIO; 3218 return false; 3219 } 3220 3221 static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected) 3222 { 3223 int retval; 3224 3225 __decode_op_hdr(xdr, expected, &retval); 3226 return retval; 3227 } 3228 3229 /* Dummy routine */ 3230 static int decode_ace(struct xdr_stream *xdr, void *ace) 3231 { 3232 __be32 *p; 3233 unsigned int strlen; 3234 char *str; 3235 3236 p = xdr_inline_decode(xdr, 12); 3237 if (unlikely(!p)) 3238 return -EIO; 3239 return decode_opaque_inline(xdr, &strlen, &str); 3240 } 3241 3242 static ssize_t 3243 decode_bitmap4(struct xdr_stream *xdr, uint32_t *bitmap, size_t sz) 3244 { 3245 ssize_t ret; 3246 3247 ret = xdr_stream_decode_uint32_array(xdr, bitmap, sz); 3248 if (likely(ret >= 0)) 3249 return ret; 3250 if (ret != -EMSGSIZE) 3251 return -EIO; 3252 return sz; 3253 } 3254 3255 static int decode_attr_bitmap(struct xdr_stream *xdr, uint32_t *bitmap) 3256 { 3257 ssize_t ret; 3258 ret = decode_bitmap4(xdr, bitmap, 3); 3259 return ret < 0 ? ret : 0; 3260 } 3261 3262 static int decode_attr_length(struct xdr_stream *xdr, uint32_t *attrlen, unsigned int *savep) 3263 { 3264 __be32 *p; 3265 3266 p = xdr_inline_decode(xdr, 4); 3267 if (unlikely(!p)) 3268 return -EIO; 3269 *attrlen = be32_to_cpup(p); 3270 *savep = xdr_stream_pos(xdr); 3271 return 0; 3272 } 3273 3274 static int decode_attr_supported(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *bitmask) 3275 { 3276 if (likely(bitmap[0] & FATTR4_WORD0_SUPPORTED_ATTRS)) { 3277 int ret; 3278 ret = decode_attr_bitmap(xdr, bitmask); 3279 if (unlikely(ret < 0)) 3280 return ret; 3281 bitmap[0] &= ~FATTR4_WORD0_SUPPORTED_ATTRS; 3282 } else 3283 bitmask[0] = bitmask[1] = bitmask[2] = 0; 3284 dprintk("%s: bitmask=%08x:%08x:%08x\n", __func__, 3285 bitmask[0], bitmask[1], bitmask[2]); 3286 return 0; 3287 } 3288 3289 static int decode_attr_type(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *type) 3290 { 3291 __be32 *p; 3292 int ret = 0; 3293 3294 *type = 0; 3295 if (unlikely(bitmap[0] & (FATTR4_WORD0_TYPE - 1U))) 3296 return -EIO; 3297 if (likely(bitmap[0] & FATTR4_WORD0_TYPE)) { 3298 p = xdr_inline_decode(xdr, 4); 3299 if (unlikely(!p)) 3300 return -EIO; 3301 *type = be32_to_cpup(p); 3302 if (*type < NF4REG || *type > NF4NAMEDATTR) { 3303 dprintk("%s: bad type %d\n", __func__, *type); 3304 return -EIO; 3305 } 3306 bitmap[0] &= ~FATTR4_WORD0_TYPE; 3307 ret = NFS_ATTR_FATTR_TYPE; 3308 } 3309 dprintk("%s: type=0%o\n", __func__, nfs_type2fmt[*type]); 3310 return ret; 3311 } 3312 3313 static int decode_attr_fh_expire_type(struct xdr_stream *xdr, 3314 uint32_t *bitmap, uint32_t *type) 3315 { 3316 __be32 *p; 3317 3318 *type = 0; 3319 if (unlikely(bitmap[0] & (FATTR4_WORD0_FH_EXPIRE_TYPE - 1U))) 3320 return -EIO; 3321 if (likely(bitmap[0] & FATTR4_WORD0_FH_EXPIRE_TYPE)) { 3322 p = xdr_inline_decode(xdr, 4); 3323 if (unlikely(!p)) 3324 return -EIO; 3325 *type = be32_to_cpup(p); 3326 bitmap[0] &= ~FATTR4_WORD0_FH_EXPIRE_TYPE; 3327 } 3328 dprintk("%s: expire type=0x%x\n", __func__, *type); 3329 return 0; 3330 } 3331 3332 static int decode_attr_change(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *change) 3333 { 3334 __be32 *p; 3335 int ret = 0; 3336 3337 *change = 0; 3338 if (unlikely(bitmap[0] & (FATTR4_WORD0_CHANGE - 1U))) 3339 return -EIO; 3340 if (likely(bitmap[0] & FATTR4_WORD0_CHANGE)) { 3341 p = xdr_inline_decode(xdr, 8); 3342 if (unlikely(!p)) 3343 return -EIO; 3344 xdr_decode_hyper(p, change); 3345 bitmap[0] &= ~FATTR4_WORD0_CHANGE; 3346 ret = NFS_ATTR_FATTR_CHANGE; 3347 } 3348 dprintk("%s: change attribute=%Lu\n", __func__, 3349 (unsigned long long)*change); 3350 return ret; 3351 } 3352 3353 static int decode_attr_size(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *size) 3354 { 3355 __be32 *p; 3356 int ret = 0; 3357 3358 *size = 0; 3359 if (unlikely(bitmap[0] & (FATTR4_WORD0_SIZE - 1U))) 3360 return -EIO; 3361 if (likely(bitmap[0] & FATTR4_WORD0_SIZE)) { 3362 p = xdr_inline_decode(xdr, 8); 3363 if (unlikely(!p)) 3364 return -EIO; 3365 xdr_decode_hyper(p, size); 3366 bitmap[0] &= ~FATTR4_WORD0_SIZE; 3367 ret = NFS_ATTR_FATTR_SIZE; 3368 } 3369 dprintk("%s: file size=%Lu\n", __func__, (unsigned long long)*size); 3370 return ret; 3371 } 3372 3373 static int decode_attr_link_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) 3374 { 3375 __be32 *p; 3376 3377 *res = 0; 3378 if (unlikely(bitmap[0] & (FATTR4_WORD0_LINK_SUPPORT - 1U))) 3379 return -EIO; 3380 if (likely(bitmap[0] & FATTR4_WORD0_LINK_SUPPORT)) { 3381 p = xdr_inline_decode(xdr, 4); 3382 if (unlikely(!p)) 3383 return -EIO; 3384 *res = be32_to_cpup(p); 3385 bitmap[0] &= ~FATTR4_WORD0_LINK_SUPPORT; 3386 } 3387 dprintk("%s: link support=%s\n", __func__, *res == 0 ? "false" : "true"); 3388 return 0; 3389 } 3390 3391 static int decode_attr_symlink_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) 3392 { 3393 __be32 *p; 3394 3395 *res = 0; 3396 if (unlikely(bitmap[0] & (FATTR4_WORD0_SYMLINK_SUPPORT - 1U))) 3397 return -EIO; 3398 if (likely(bitmap[0] & FATTR4_WORD0_SYMLINK_SUPPORT)) { 3399 p = xdr_inline_decode(xdr, 4); 3400 if (unlikely(!p)) 3401 return -EIO; 3402 *res = be32_to_cpup(p); 3403 bitmap[0] &= ~FATTR4_WORD0_SYMLINK_SUPPORT; 3404 } 3405 dprintk("%s: symlink support=%s\n", __func__, *res == 0 ? "false" : "true"); 3406 return 0; 3407 } 3408 3409 static int decode_attr_fsid(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fsid *fsid) 3410 { 3411 __be32 *p; 3412 int ret = 0; 3413 3414 fsid->major = 0; 3415 fsid->minor = 0; 3416 if (unlikely(bitmap[0] & (FATTR4_WORD0_FSID - 1U))) 3417 return -EIO; 3418 if (likely(bitmap[0] & FATTR4_WORD0_FSID)) { 3419 p = xdr_inline_decode(xdr, 16); 3420 if (unlikely(!p)) 3421 return -EIO; 3422 p = xdr_decode_hyper(p, &fsid->major); 3423 xdr_decode_hyper(p, &fsid->minor); 3424 bitmap[0] &= ~FATTR4_WORD0_FSID; 3425 ret = NFS_ATTR_FATTR_FSID; 3426 } 3427 dprintk("%s: fsid=(0x%Lx/0x%Lx)\n", __func__, 3428 (unsigned long long)fsid->major, 3429 (unsigned long long)fsid->minor); 3430 return ret; 3431 } 3432 3433 static int decode_attr_lease_time(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) 3434 { 3435 __be32 *p; 3436 3437 *res = 60; 3438 if (unlikely(bitmap[0] & (FATTR4_WORD0_LEASE_TIME - 1U))) 3439 return -EIO; 3440 if (likely(bitmap[0] & FATTR4_WORD0_LEASE_TIME)) { 3441 p = xdr_inline_decode(xdr, 4); 3442 if (unlikely(!p)) 3443 return -EIO; 3444 *res = be32_to_cpup(p); 3445 bitmap[0] &= ~FATTR4_WORD0_LEASE_TIME; 3446 } 3447 dprintk("%s: lease time=%u\n", __func__, (unsigned int)*res); 3448 return 0; 3449 } 3450 3451 static int decode_attr_error(struct xdr_stream *xdr, uint32_t *bitmap, int32_t *res) 3452 { 3453 __be32 *p; 3454 3455 if (unlikely(bitmap[0] & (FATTR4_WORD0_RDATTR_ERROR - 1U))) 3456 return -EIO; 3457 if (likely(bitmap[0] & FATTR4_WORD0_RDATTR_ERROR)) { 3458 p = xdr_inline_decode(xdr, 4); 3459 if (unlikely(!p)) 3460 return -EIO; 3461 bitmap[0] &= ~FATTR4_WORD0_RDATTR_ERROR; 3462 *res = -be32_to_cpup(p); 3463 } 3464 return 0; 3465 } 3466 3467 static int decode_attr_exclcreat_supported(struct xdr_stream *xdr, 3468 uint32_t *bitmap, uint32_t *bitmask) 3469 { 3470 if (likely(bitmap[2] & FATTR4_WORD2_SUPPATTR_EXCLCREAT)) { 3471 int ret; 3472 ret = decode_attr_bitmap(xdr, bitmask); 3473 if (unlikely(ret < 0)) 3474 return ret; 3475 bitmap[2] &= ~FATTR4_WORD2_SUPPATTR_EXCLCREAT; 3476 } else 3477 bitmask[0] = bitmask[1] = bitmask[2] = 0; 3478 dprintk("%s: bitmask=%08x:%08x:%08x\n", __func__, 3479 bitmask[0], bitmask[1], bitmask[2]); 3480 return 0; 3481 } 3482 3483 static int decode_attr_filehandle(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fh *fh) 3484 { 3485 __be32 *p; 3486 u32 len; 3487 3488 if (fh != NULL) 3489 memset(fh, 0, sizeof(*fh)); 3490 3491 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEHANDLE - 1U))) 3492 return -EIO; 3493 if (likely(bitmap[0] & FATTR4_WORD0_FILEHANDLE)) { 3494 p = xdr_inline_decode(xdr, 4); 3495 if (unlikely(!p)) 3496 return -EIO; 3497 len = be32_to_cpup(p); 3498 if (len > NFS4_FHSIZE || len == 0) { 3499 trace_nfs4_xdr_bad_filehandle(xdr, OP_READDIR, 3500 NFS4ERR_BADHANDLE); 3501 return -EREMOTEIO; 3502 } 3503 p = xdr_inline_decode(xdr, len); 3504 if (unlikely(!p)) 3505 return -EIO; 3506 if (fh != NULL) { 3507 memcpy(fh->data, p, len); 3508 fh->size = len; 3509 } 3510 bitmap[0] &= ~FATTR4_WORD0_FILEHANDLE; 3511 } 3512 return 0; 3513 } 3514 3515 static int decode_attr_aclsupport(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) 3516 { 3517 __be32 *p; 3518 3519 *res = 0; 3520 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACLSUPPORT - 1U))) 3521 return -EIO; 3522 if (likely(bitmap[0] & FATTR4_WORD0_ACLSUPPORT)) { 3523 p = xdr_inline_decode(xdr, 4); 3524 if (unlikely(!p)) 3525 return -EIO; 3526 *res = be32_to_cpup(p); 3527 bitmap[0] &= ~FATTR4_WORD0_ACLSUPPORT; 3528 } 3529 dprintk("%s: ACLs supported=%u\n", __func__, (unsigned int)*res); 3530 return 0; 3531 } 3532 3533 static int decode_attr_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid) 3534 { 3535 __be32 *p; 3536 int ret = 0; 3537 3538 *fileid = 0; 3539 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEID - 1U))) 3540 return -EIO; 3541 if (likely(bitmap[0] & FATTR4_WORD0_FILEID)) { 3542 p = xdr_inline_decode(xdr, 8); 3543 if (unlikely(!p)) 3544 return -EIO; 3545 xdr_decode_hyper(p, fileid); 3546 bitmap[0] &= ~FATTR4_WORD0_FILEID; 3547 ret = NFS_ATTR_FATTR_FILEID; 3548 } 3549 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid); 3550 return ret; 3551 } 3552 3553 static int decode_attr_mounted_on_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[1] & (FATTR4_WORD1_MOUNTED_ON_FILEID - 1U))) 3560 return -EIO; 3561 if (likely(bitmap[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)) { 3562 p = xdr_inline_decode(xdr, 8); 3563 if (unlikely(!p)) 3564 return -EIO; 3565 xdr_decode_hyper(p, fileid); 3566 bitmap[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID; 3567 ret = NFS_ATTR_FATTR_MOUNTED_ON_FILEID; 3568 } 3569 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid); 3570 return ret; 3571 } 3572 3573 static int decode_attr_files_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 3574 { 3575 __be32 *p; 3576 int status = 0; 3577 3578 *res = 0; 3579 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_AVAIL - 1U))) 3580 return -EIO; 3581 if (likely(bitmap[0] & FATTR4_WORD0_FILES_AVAIL)) { 3582 p = xdr_inline_decode(xdr, 8); 3583 if (unlikely(!p)) 3584 return -EIO; 3585 xdr_decode_hyper(p, res); 3586 bitmap[0] &= ~FATTR4_WORD0_FILES_AVAIL; 3587 } 3588 dprintk("%s: files avail=%Lu\n", __func__, (unsigned long long)*res); 3589 return status; 3590 } 3591 3592 static int decode_attr_files_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 3593 { 3594 __be32 *p; 3595 int status = 0; 3596 3597 *res = 0; 3598 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_FREE - 1U))) 3599 return -EIO; 3600 if (likely(bitmap[0] & FATTR4_WORD0_FILES_FREE)) { 3601 p = xdr_inline_decode(xdr, 8); 3602 if (unlikely(!p)) 3603 return -EIO; 3604 xdr_decode_hyper(p, res); 3605 bitmap[0] &= ~FATTR4_WORD0_FILES_FREE; 3606 } 3607 dprintk("%s: files free=%Lu\n", __func__, (unsigned long long)*res); 3608 return status; 3609 } 3610 3611 static int decode_attr_files_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 3612 { 3613 __be32 *p; 3614 int status = 0; 3615 3616 *res = 0; 3617 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_TOTAL - 1U))) 3618 return -EIO; 3619 if (likely(bitmap[0] & FATTR4_WORD0_FILES_TOTAL)) { 3620 p = xdr_inline_decode(xdr, 8); 3621 if (unlikely(!p)) 3622 return -EIO; 3623 xdr_decode_hyper(p, res); 3624 bitmap[0] &= ~FATTR4_WORD0_FILES_TOTAL; 3625 } 3626 dprintk("%s: files total=%Lu\n", __func__, (unsigned long long)*res); 3627 return status; 3628 } 3629 3630 static int decode_pathname(struct xdr_stream *xdr, struct nfs4_pathname *path) 3631 { 3632 u32 n; 3633 __be32 *p; 3634 int status = 0; 3635 3636 p = xdr_inline_decode(xdr, 4); 3637 if (unlikely(!p)) 3638 return -EIO; 3639 n = be32_to_cpup(p); 3640 if (n == 0) 3641 goto root_path; 3642 dprintk("pathname4: "); 3643 if (n > NFS4_PATHNAME_MAXCOMPONENTS) { 3644 dprintk("cannot parse %d components in path\n", n); 3645 goto out_eio; 3646 } 3647 for (path->ncomponents = 0; path->ncomponents < n; path->ncomponents++) { 3648 struct nfs4_string *component = &path->components[path->ncomponents]; 3649 status = decode_opaque_inline(xdr, &component->len, &component->data); 3650 if (unlikely(status != 0)) 3651 goto out_eio; 3652 ifdebug (XDR) 3653 pr_cont("%s%.*s ", 3654 (path->ncomponents != n ? "/ " : ""), 3655 component->len, component->data); 3656 } 3657 out: 3658 return status; 3659 root_path: 3660 /* a root pathname is sent as a zero component4 */ 3661 path->ncomponents = 1; 3662 path->components[0].len=0; 3663 path->components[0].data=NULL; 3664 dprintk("pathname4: /\n"); 3665 goto out; 3666 out_eio: 3667 dprintk(" status %d", status); 3668 status = -EIO; 3669 goto out; 3670 } 3671 3672 static int decode_attr_fs_locations(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_fs_locations *res) 3673 { 3674 int n; 3675 __be32 *p; 3676 int status = -EIO; 3677 3678 if (unlikely(bitmap[0] & (FATTR4_WORD0_FS_LOCATIONS -1U))) 3679 goto out; 3680 status = 0; 3681 if (unlikely(!(bitmap[0] & FATTR4_WORD0_FS_LOCATIONS))) 3682 goto out; 3683 bitmap[0] &= ~FATTR4_WORD0_FS_LOCATIONS; 3684 status = -EIO; 3685 /* Ignore borken servers that return unrequested attrs */ 3686 if (unlikely(res == NULL)) 3687 goto out; 3688 dprintk("%s: fsroot:\n", __func__); 3689 status = decode_pathname(xdr, &res->fs_path); 3690 if (unlikely(status != 0)) 3691 goto out; 3692 p = xdr_inline_decode(xdr, 4); 3693 if (unlikely(!p)) 3694 goto out_eio; 3695 n = be32_to_cpup(p); 3696 for (res->nlocations = 0; res->nlocations < n; res->nlocations++) { 3697 u32 m; 3698 struct nfs4_fs_location *loc; 3699 3700 if (res->nlocations == NFS4_FS_LOCATIONS_MAXENTRIES) 3701 break; 3702 loc = &res->locations[res->nlocations]; 3703 p = xdr_inline_decode(xdr, 4); 3704 if (unlikely(!p)) 3705 goto out_eio; 3706 m = be32_to_cpup(p); 3707 3708 dprintk("%s: servers:\n", __func__); 3709 for (loc->nservers = 0; loc->nservers < m; loc->nservers++) { 3710 struct nfs4_string *server; 3711 3712 if (loc->nservers == NFS4_FS_LOCATION_MAXSERVERS) { 3713 unsigned int i; 3714 dprintk("%s: using first %u of %u servers " 3715 "returned for location %u\n", 3716 __func__, 3717 NFS4_FS_LOCATION_MAXSERVERS, 3718 m, res->nlocations); 3719 for (i = loc->nservers; i < m; i++) { 3720 unsigned int len; 3721 char *data; 3722 status = decode_opaque_inline(xdr, &len, &data); 3723 if (unlikely(status != 0)) 3724 goto out_eio; 3725 } 3726 break; 3727 } 3728 server = &loc->servers[loc->nservers]; 3729 status = decode_opaque_inline(xdr, &server->len, &server->data); 3730 if (unlikely(status != 0)) 3731 goto out_eio; 3732 dprintk("%s ", server->data); 3733 } 3734 status = decode_pathname(xdr, &loc->rootpath); 3735 if (unlikely(status != 0)) 3736 goto out_eio; 3737 } 3738 if (res->nlocations != 0) 3739 status = NFS_ATTR_FATTR_V4_LOCATIONS; 3740 out: 3741 dprintk("%s: fs_locations done, error = %d\n", __func__, status); 3742 return status; 3743 out_eio: 3744 status = -EIO; 3745 goto out; 3746 } 3747 3748 static int decode_attr_maxfilesize(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 3749 { 3750 __be32 *p; 3751 int status = 0; 3752 3753 *res = 0; 3754 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXFILESIZE - 1U))) 3755 return -EIO; 3756 if (likely(bitmap[0] & FATTR4_WORD0_MAXFILESIZE)) { 3757 p = xdr_inline_decode(xdr, 8); 3758 if (unlikely(!p)) 3759 return -EIO; 3760 xdr_decode_hyper(p, res); 3761 bitmap[0] &= ~FATTR4_WORD0_MAXFILESIZE; 3762 } 3763 dprintk("%s: maxfilesize=%Lu\n", __func__, (unsigned long long)*res); 3764 return status; 3765 } 3766 3767 static int decode_attr_maxlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxlink) 3768 { 3769 __be32 *p; 3770 int status = 0; 3771 3772 *maxlink = 1; 3773 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXLINK - 1U))) 3774 return -EIO; 3775 if (likely(bitmap[0] & FATTR4_WORD0_MAXLINK)) { 3776 p = xdr_inline_decode(xdr, 4); 3777 if (unlikely(!p)) 3778 return -EIO; 3779 *maxlink = be32_to_cpup(p); 3780 bitmap[0] &= ~FATTR4_WORD0_MAXLINK; 3781 } 3782 dprintk("%s: maxlink=%u\n", __func__, *maxlink); 3783 return status; 3784 } 3785 3786 static int decode_attr_maxname(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxname) 3787 { 3788 __be32 *p; 3789 int status = 0; 3790 3791 *maxname = 1024; 3792 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXNAME - 1U))) 3793 return -EIO; 3794 if (likely(bitmap[0] & FATTR4_WORD0_MAXNAME)) { 3795 p = xdr_inline_decode(xdr, 4); 3796 if (unlikely(!p)) 3797 return -EIO; 3798 *maxname = be32_to_cpup(p); 3799 bitmap[0] &= ~FATTR4_WORD0_MAXNAME; 3800 } 3801 dprintk("%s: maxname=%u\n", __func__, *maxname); 3802 return status; 3803 } 3804 3805 static int decode_attr_maxread(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) 3806 { 3807 __be32 *p; 3808 int status = 0; 3809 3810 *res = 1024; 3811 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXREAD - 1U))) 3812 return -EIO; 3813 if (likely(bitmap[0] & FATTR4_WORD0_MAXREAD)) { 3814 uint64_t maxread; 3815 p = xdr_inline_decode(xdr, 8); 3816 if (unlikely(!p)) 3817 return -EIO; 3818 xdr_decode_hyper(p, &maxread); 3819 if (maxread > 0x7FFFFFFF) 3820 maxread = 0x7FFFFFFF; 3821 *res = (uint32_t)maxread; 3822 bitmap[0] &= ~FATTR4_WORD0_MAXREAD; 3823 } 3824 dprintk("%s: maxread=%lu\n", __func__, (unsigned long)*res); 3825 return status; 3826 } 3827 3828 static int decode_attr_maxwrite(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) 3829 { 3830 __be32 *p; 3831 int status = 0; 3832 3833 *res = 1024; 3834 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXWRITE - 1U))) 3835 return -EIO; 3836 if (likely(bitmap[0] & FATTR4_WORD0_MAXWRITE)) { 3837 uint64_t maxwrite; 3838 p = xdr_inline_decode(xdr, 8); 3839 if (unlikely(!p)) 3840 return -EIO; 3841 xdr_decode_hyper(p, &maxwrite); 3842 if (maxwrite > 0x7FFFFFFF) 3843 maxwrite = 0x7FFFFFFF; 3844 *res = (uint32_t)maxwrite; 3845 bitmap[0] &= ~FATTR4_WORD0_MAXWRITE; 3846 } 3847 dprintk("%s: maxwrite=%lu\n", __func__, (unsigned long)*res); 3848 return status; 3849 } 3850 3851 static int decode_attr_mode(struct xdr_stream *xdr, uint32_t *bitmap, umode_t *mode) 3852 { 3853 uint32_t tmp; 3854 __be32 *p; 3855 int ret = 0; 3856 3857 *mode = 0; 3858 if (unlikely(bitmap[1] & (FATTR4_WORD1_MODE - 1U))) 3859 return -EIO; 3860 if (likely(bitmap[1] & FATTR4_WORD1_MODE)) { 3861 p = xdr_inline_decode(xdr, 4); 3862 if (unlikely(!p)) 3863 return -EIO; 3864 tmp = be32_to_cpup(p); 3865 *mode = tmp & ~S_IFMT; 3866 bitmap[1] &= ~FATTR4_WORD1_MODE; 3867 ret = NFS_ATTR_FATTR_MODE; 3868 } 3869 dprintk("%s: file mode=0%o\n", __func__, (unsigned int)*mode); 3870 return ret; 3871 } 3872 3873 static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *nlink) 3874 { 3875 __be32 *p; 3876 int ret = 0; 3877 3878 *nlink = 1; 3879 if (unlikely(bitmap[1] & (FATTR4_WORD1_NUMLINKS - 1U))) 3880 return -EIO; 3881 if (likely(bitmap[1] & FATTR4_WORD1_NUMLINKS)) { 3882 p = xdr_inline_decode(xdr, 4); 3883 if (unlikely(!p)) 3884 return -EIO; 3885 *nlink = be32_to_cpup(p); 3886 bitmap[1] &= ~FATTR4_WORD1_NUMLINKS; 3887 ret = NFS_ATTR_FATTR_NLINK; 3888 } 3889 dprintk("%s: nlink=%u\n", __func__, (unsigned int)*nlink); 3890 return ret; 3891 } 3892 3893 static ssize_t decode_nfs4_string(struct xdr_stream *xdr, 3894 struct nfs4_string *name, gfp_t gfp_flags) 3895 { 3896 ssize_t ret; 3897 3898 ret = xdr_stream_decode_string_dup(xdr, &name->data, 3899 XDR_MAX_NETOBJ, gfp_flags); 3900 name->len = 0; 3901 if (ret > 0) 3902 name->len = ret; 3903 return ret; 3904 } 3905 3906 static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap, 3907 const struct nfs_server *server, kuid_t *uid, 3908 struct nfs4_string *owner_name) 3909 { 3910 ssize_t len; 3911 char *p; 3912 3913 *uid = make_kuid(&init_user_ns, -2); 3914 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER - 1U))) 3915 return -EIO; 3916 if (!(bitmap[1] & FATTR4_WORD1_OWNER)) 3917 return 0; 3918 bitmap[1] &= ~FATTR4_WORD1_OWNER; 3919 3920 if (owner_name != NULL) { 3921 len = decode_nfs4_string(xdr, owner_name, GFP_NOIO); 3922 if (len <= 0) 3923 goto out; 3924 dprintk("%s: name=%s\n", __func__, owner_name->data); 3925 return NFS_ATTR_FATTR_OWNER_NAME; 3926 } else { 3927 len = xdr_stream_decode_opaque_inline(xdr, (void **)&p, 3928 XDR_MAX_NETOBJ); 3929 if (len <= 0 || nfs_map_name_to_uid(server, p, len, uid) != 0) 3930 goto out; 3931 dprintk("%s: uid=%d\n", __func__, (int)from_kuid(&init_user_ns, *uid)); 3932 return NFS_ATTR_FATTR_OWNER; 3933 } 3934 out: 3935 if (len == -EBADMSG) 3936 return -EIO; 3937 return 0; 3938 } 3939 3940 static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap, 3941 const struct nfs_server *server, kgid_t *gid, 3942 struct nfs4_string *group_name) 3943 { 3944 ssize_t len; 3945 char *p; 3946 3947 *gid = make_kgid(&init_user_ns, -2); 3948 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER_GROUP - 1U))) 3949 return -EIO; 3950 if (!(bitmap[1] & FATTR4_WORD1_OWNER_GROUP)) 3951 return 0; 3952 bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP; 3953 3954 if (group_name != NULL) { 3955 len = decode_nfs4_string(xdr, group_name, GFP_NOIO); 3956 if (len <= 0) 3957 goto out; 3958 dprintk("%s: name=%s\n", __func__, group_name->data); 3959 return NFS_ATTR_FATTR_GROUP_NAME; 3960 } else { 3961 len = xdr_stream_decode_opaque_inline(xdr, (void **)&p, 3962 XDR_MAX_NETOBJ); 3963 if (len <= 0 || nfs_map_group_to_gid(server, p, len, gid) != 0) 3964 goto out; 3965 dprintk("%s: gid=%d\n", __func__, (int)from_kgid(&init_user_ns, *gid)); 3966 return NFS_ATTR_FATTR_GROUP; 3967 } 3968 out: 3969 if (len == -EBADMSG) 3970 return -EIO; 3971 return 0; 3972 } 3973 3974 static int decode_attr_rdev(struct xdr_stream *xdr, uint32_t *bitmap, dev_t *rdev) 3975 { 3976 uint32_t major = 0, minor = 0; 3977 __be32 *p; 3978 int ret = 0; 3979 3980 *rdev = MKDEV(0,0); 3981 if (unlikely(bitmap[1] & (FATTR4_WORD1_RAWDEV - 1U))) 3982 return -EIO; 3983 if (likely(bitmap[1] & FATTR4_WORD1_RAWDEV)) { 3984 dev_t tmp; 3985 3986 p = xdr_inline_decode(xdr, 8); 3987 if (unlikely(!p)) 3988 return -EIO; 3989 major = be32_to_cpup(p++); 3990 minor = be32_to_cpup(p); 3991 tmp = MKDEV(major, minor); 3992 if (MAJOR(tmp) == major && MINOR(tmp) == minor) 3993 *rdev = tmp; 3994 bitmap[1] &= ~ FATTR4_WORD1_RAWDEV; 3995 ret = NFS_ATTR_FATTR_RDEV; 3996 } 3997 dprintk("%s: rdev=(0x%x:0x%x)\n", __func__, major, minor); 3998 return ret; 3999 } 4000 4001 static int decode_attr_space_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 4002 { 4003 __be32 *p; 4004 int status = 0; 4005 4006 *res = 0; 4007 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_AVAIL - 1U))) 4008 return -EIO; 4009 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_AVAIL)) { 4010 p = xdr_inline_decode(xdr, 8); 4011 if (unlikely(!p)) 4012 return -EIO; 4013 xdr_decode_hyper(p, res); 4014 bitmap[1] &= ~FATTR4_WORD1_SPACE_AVAIL; 4015 } 4016 dprintk("%s: space avail=%Lu\n", __func__, (unsigned long long)*res); 4017 return status; 4018 } 4019 4020 static int decode_attr_space_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 4021 { 4022 __be32 *p; 4023 int status = 0; 4024 4025 *res = 0; 4026 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_FREE - 1U))) 4027 return -EIO; 4028 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_FREE)) { 4029 p = xdr_inline_decode(xdr, 8); 4030 if (unlikely(!p)) 4031 return -EIO; 4032 xdr_decode_hyper(p, res); 4033 bitmap[1] &= ~FATTR4_WORD1_SPACE_FREE; 4034 } 4035 dprintk("%s: space free=%Lu\n", __func__, (unsigned long long)*res); 4036 return status; 4037 } 4038 4039 static int decode_attr_space_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 4040 { 4041 __be32 *p; 4042 int status = 0; 4043 4044 *res = 0; 4045 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_TOTAL - 1U))) 4046 return -EIO; 4047 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_TOTAL)) { 4048 p = xdr_inline_decode(xdr, 8); 4049 if (unlikely(!p)) 4050 return -EIO; 4051 xdr_decode_hyper(p, res); 4052 bitmap[1] &= ~FATTR4_WORD1_SPACE_TOTAL; 4053 } 4054 dprintk("%s: space total=%Lu\n", __func__, (unsigned long long)*res); 4055 return status; 4056 } 4057 4058 static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *used) 4059 { 4060 __be32 *p; 4061 int ret = 0; 4062 4063 *used = 0; 4064 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_USED - 1U))) 4065 return -EIO; 4066 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_USED)) { 4067 p = xdr_inline_decode(xdr, 8); 4068 if (unlikely(!p)) 4069 return -EIO; 4070 xdr_decode_hyper(p, used); 4071 bitmap[1] &= ~FATTR4_WORD1_SPACE_USED; 4072 ret = NFS_ATTR_FATTR_SPACE_USED; 4073 } 4074 dprintk("%s: space used=%Lu\n", __func__, 4075 (unsigned long long)*used); 4076 return ret; 4077 } 4078 4079 static __be32 * 4080 xdr_decode_nfstime4(__be32 *p, struct timespec64 *t) 4081 { 4082 __u64 sec; 4083 4084 p = xdr_decode_hyper(p, &sec); 4085 t-> tv_sec = sec; 4086 t->tv_nsec = be32_to_cpup(p++); 4087 return p; 4088 } 4089 4090 static int decode_attr_time(struct xdr_stream *xdr, struct timespec64 *time) 4091 { 4092 __be32 *p; 4093 4094 p = xdr_inline_decode(xdr, nfstime4_maxsz << 2); 4095 if (unlikely(!p)) 4096 return -EIO; 4097 xdr_decode_nfstime4(p, time); 4098 return 0; 4099 } 4100 4101 static int decode_attr_time_access(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec64 *time) 4102 { 4103 int status = 0; 4104 4105 time->tv_sec = 0; 4106 time->tv_nsec = 0; 4107 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_ACCESS - 1U))) 4108 return -EIO; 4109 if (likely(bitmap[1] & FATTR4_WORD1_TIME_ACCESS)) { 4110 status = decode_attr_time(xdr, time); 4111 if (status == 0) 4112 status = NFS_ATTR_FATTR_ATIME; 4113 bitmap[1] &= ~FATTR4_WORD1_TIME_ACCESS; 4114 } 4115 dprintk("%s: atime=%lld\n", __func__, time->tv_sec); 4116 return status; 4117 } 4118 4119 static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec64 *time) 4120 { 4121 int status = 0; 4122 4123 time->tv_sec = 0; 4124 time->tv_nsec = 0; 4125 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_METADATA - 1U))) 4126 return -EIO; 4127 if (likely(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) { 4128 status = decode_attr_time(xdr, time); 4129 if (status == 0) 4130 status = NFS_ATTR_FATTR_CTIME; 4131 bitmap[1] &= ~FATTR4_WORD1_TIME_METADATA; 4132 } 4133 dprintk("%s: ctime=%lld\n", __func__, time->tv_sec); 4134 return status; 4135 } 4136 4137 static int decode_attr_time_delta(struct xdr_stream *xdr, uint32_t *bitmap, 4138 struct timespec64 *time) 4139 { 4140 int status = 0; 4141 4142 time->tv_sec = 0; 4143 time->tv_nsec = 0; 4144 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_DELTA - 1U))) 4145 return -EIO; 4146 if (likely(bitmap[1] & FATTR4_WORD1_TIME_DELTA)) { 4147 status = decode_attr_time(xdr, time); 4148 bitmap[1] &= ~FATTR4_WORD1_TIME_DELTA; 4149 } 4150 dprintk("%s: time_delta=%lld %ld\n", __func__, time->tv_sec, 4151 time->tv_nsec); 4152 return status; 4153 } 4154 4155 static int decode_attr_security_label(struct xdr_stream *xdr, uint32_t *bitmap, 4156 struct nfs4_label *label) 4157 { 4158 uint32_t pi = 0; 4159 uint32_t lfs = 0; 4160 __u32 len; 4161 __be32 *p; 4162 int status = 0; 4163 4164 if (unlikely(bitmap[2] & (FATTR4_WORD2_SECURITY_LABEL - 1U))) 4165 return -EIO; 4166 if (likely(bitmap[2] & FATTR4_WORD2_SECURITY_LABEL)) { 4167 p = xdr_inline_decode(xdr, 4); 4168 if (unlikely(!p)) 4169 return -EIO; 4170 lfs = be32_to_cpup(p++); 4171 p = xdr_inline_decode(xdr, 4); 4172 if (unlikely(!p)) 4173 return -EIO; 4174 pi = be32_to_cpup(p++); 4175 p = xdr_inline_decode(xdr, 4); 4176 if (unlikely(!p)) 4177 return -EIO; 4178 len = be32_to_cpup(p++); 4179 p = xdr_inline_decode(xdr, len); 4180 if (unlikely(!p)) 4181 return -EIO; 4182 if (len < NFS4_MAXLABELLEN) { 4183 if (label) { 4184 if (label->len) { 4185 if (label->len < len) 4186 return -ERANGE; 4187 memcpy(label->label, p, len); 4188 } 4189 label->len = len; 4190 label->pi = pi; 4191 label->lfs = lfs; 4192 status = NFS_ATTR_FATTR_V4_SECURITY_LABEL; 4193 } 4194 bitmap[2] &= ~FATTR4_WORD2_SECURITY_LABEL; 4195 } else 4196 printk(KERN_WARNING "%s: label too long (%u)!\n", 4197 __func__, len); 4198 if (label && label->label) 4199 dprintk("%s: label=%.*s, len=%d, PI=%d, LFS=%d\n", 4200 __func__, label->len, (char *)label->label, 4201 label->len, label->pi, label->lfs); 4202 } 4203 return status; 4204 } 4205 4206 static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec64 *time) 4207 { 4208 int status = 0; 4209 4210 time->tv_sec = 0; 4211 time->tv_nsec = 0; 4212 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_MODIFY - 1U))) 4213 return -EIO; 4214 if (likely(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) { 4215 status = decode_attr_time(xdr, time); 4216 if (status == 0) 4217 status = NFS_ATTR_FATTR_MTIME; 4218 bitmap[1] &= ~FATTR4_WORD1_TIME_MODIFY; 4219 } 4220 dprintk("%s: mtime=%lld\n", __func__, time->tv_sec); 4221 return status; 4222 } 4223 4224 static int decode_attr_xattrsupport(struct xdr_stream *xdr, uint32_t *bitmap, 4225 uint32_t *res) 4226 { 4227 __be32 *p; 4228 4229 *res = 0; 4230 if (unlikely(bitmap[2] & (FATTR4_WORD2_XATTR_SUPPORT - 1U))) 4231 return -EIO; 4232 if (likely(bitmap[2] & FATTR4_WORD2_XATTR_SUPPORT)) { 4233 p = xdr_inline_decode(xdr, 4); 4234 if (unlikely(!p)) 4235 return -EIO; 4236 *res = be32_to_cpup(p); 4237 bitmap[2] &= ~FATTR4_WORD2_XATTR_SUPPORT; 4238 } 4239 dprintk("%s: XATTR support=%s\n", __func__, 4240 *res == 0 ? "false" : "true"); 4241 return 0; 4242 } 4243 4244 static int verify_attr_len(struct xdr_stream *xdr, unsigned int savep, uint32_t attrlen) 4245 { 4246 unsigned int attrwords = XDR_QUADLEN(attrlen); 4247 unsigned int nwords = (xdr_stream_pos(xdr) - savep) >> 2; 4248 4249 if (unlikely(attrwords != nwords)) { 4250 dprintk("%s: server returned incorrect attribute length: " 4251 "%u %c %u\n", 4252 __func__, 4253 attrwords << 2, 4254 (attrwords < nwords) ? '<' : '>', 4255 nwords << 2); 4256 return -EIO; 4257 } 4258 return 0; 4259 } 4260 4261 static int decode_change_info(struct xdr_stream *xdr, struct nfs4_change_info *cinfo) 4262 { 4263 __be32 *p; 4264 4265 p = xdr_inline_decode(xdr, 20); 4266 if (unlikely(!p)) 4267 return -EIO; 4268 cinfo->atomic = be32_to_cpup(p++); 4269 p = xdr_decode_hyper(p, &cinfo->before); 4270 xdr_decode_hyper(p, &cinfo->after); 4271 return 0; 4272 } 4273 4274 static int decode_access(struct xdr_stream *xdr, u32 *supported, u32 *access) 4275 { 4276 __be32 *p; 4277 uint32_t supp, acc; 4278 int status; 4279 4280 status = decode_op_hdr(xdr, OP_ACCESS); 4281 if (status) 4282 return status; 4283 p = xdr_inline_decode(xdr, 8); 4284 if (unlikely(!p)) 4285 return -EIO; 4286 supp = be32_to_cpup(p++); 4287 acc = be32_to_cpup(p); 4288 *supported = supp; 4289 *access = acc; 4290 return 0; 4291 } 4292 4293 static int decode_opaque_fixed(struct xdr_stream *xdr, void *buf, size_t len) 4294 { 4295 ssize_t ret = xdr_stream_decode_opaque_fixed(xdr, buf, len); 4296 if (unlikely(ret < 0)) 4297 return -EIO; 4298 return 0; 4299 } 4300 4301 static int decode_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid) 4302 { 4303 return decode_opaque_fixed(xdr, stateid, NFS4_STATEID_SIZE); 4304 } 4305 4306 static int decode_open_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid) 4307 { 4308 stateid->type = NFS4_OPEN_STATEID_TYPE; 4309 return decode_stateid(xdr, stateid); 4310 } 4311 4312 static int decode_lock_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid) 4313 { 4314 stateid->type = NFS4_LOCK_STATEID_TYPE; 4315 return decode_stateid(xdr, stateid); 4316 } 4317 4318 static int decode_delegation_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid) 4319 { 4320 stateid->type = NFS4_DELEGATION_STATEID_TYPE; 4321 return decode_stateid(xdr, stateid); 4322 } 4323 4324 static int decode_invalid_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid) 4325 { 4326 nfs4_stateid dummy; 4327 4328 nfs4_stateid_copy(stateid, &invalid_stateid); 4329 return decode_stateid(xdr, &dummy); 4330 } 4331 4332 static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res) 4333 { 4334 int status; 4335 4336 status = decode_op_hdr(xdr, OP_CLOSE); 4337 if (status != -EIO) 4338 nfs_increment_open_seqid(status, res->seqid); 4339 if (!status) 4340 status = decode_invalid_stateid(xdr, &res->stateid); 4341 return status; 4342 } 4343 4344 static int decode_verifier(struct xdr_stream *xdr, void *verifier) 4345 { 4346 return decode_opaque_fixed(xdr, verifier, NFS4_VERIFIER_SIZE); 4347 } 4348 4349 static int decode_write_verifier(struct xdr_stream *xdr, struct nfs_write_verifier *verifier) 4350 { 4351 return decode_opaque_fixed(xdr, verifier->data, NFS4_VERIFIER_SIZE); 4352 } 4353 4354 static int decode_commit(struct xdr_stream *xdr, struct nfs_commitres *res) 4355 { 4356 struct nfs_writeverf *verf = res->verf; 4357 int status; 4358 4359 status = decode_op_hdr(xdr, OP_COMMIT); 4360 if (!status) 4361 status = decode_write_verifier(xdr, &verf->verifier); 4362 if (!status) 4363 verf->committed = NFS_FILE_SYNC; 4364 return status; 4365 } 4366 4367 static int decode_create(struct xdr_stream *xdr, struct nfs4_change_info *cinfo) 4368 { 4369 __be32 *p; 4370 uint32_t bmlen; 4371 int status; 4372 4373 status = decode_op_hdr(xdr, OP_CREATE); 4374 if (status) 4375 return status; 4376 if ((status = decode_change_info(xdr, cinfo))) 4377 return status; 4378 p = xdr_inline_decode(xdr, 4); 4379 if (unlikely(!p)) 4380 return -EIO; 4381 bmlen = be32_to_cpup(p); 4382 p = xdr_inline_decode(xdr, bmlen << 2); 4383 if (likely(p)) 4384 return 0; 4385 return -EIO; 4386 } 4387 4388 static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_res *res) 4389 { 4390 unsigned int savep; 4391 uint32_t attrlen, bitmap[3] = {0}; 4392 int status; 4393 4394 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) 4395 goto xdr_error; 4396 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) 4397 goto xdr_error; 4398 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) 4399 goto xdr_error; 4400 if ((status = decode_attr_supported(xdr, bitmap, res->attr_bitmask)) != 0) 4401 goto xdr_error; 4402 if ((status = decode_attr_fh_expire_type(xdr, bitmap, 4403 &res->fh_expire_type)) != 0) 4404 goto xdr_error; 4405 if ((status = decode_attr_link_support(xdr, bitmap, &res->has_links)) != 0) 4406 goto xdr_error; 4407 if ((status = decode_attr_symlink_support(xdr, bitmap, &res->has_symlinks)) != 0) 4408 goto xdr_error; 4409 if ((status = decode_attr_aclsupport(xdr, bitmap, &res->acl_bitmask)) != 0) 4410 goto xdr_error; 4411 if ((status = decode_attr_exclcreat_supported(xdr, bitmap, 4412 res->exclcreat_bitmask)) != 0) 4413 goto xdr_error; 4414 status = verify_attr_len(xdr, savep, attrlen); 4415 xdr_error: 4416 dprintk("%s: xdr returned %d!\n", __func__, -status); 4417 return status; 4418 } 4419 4420 static int decode_statfs(struct xdr_stream *xdr, struct nfs_fsstat *fsstat) 4421 { 4422 unsigned int savep; 4423 uint32_t attrlen, bitmap[3] = {0}; 4424 int status; 4425 4426 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) 4427 goto xdr_error; 4428 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) 4429 goto xdr_error; 4430 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) 4431 goto xdr_error; 4432 4433 if ((status = decode_attr_files_avail(xdr, bitmap, &fsstat->afiles)) != 0) 4434 goto xdr_error; 4435 if ((status = decode_attr_files_free(xdr, bitmap, &fsstat->ffiles)) != 0) 4436 goto xdr_error; 4437 if ((status = decode_attr_files_total(xdr, bitmap, &fsstat->tfiles)) != 0) 4438 goto xdr_error; 4439 4440 status = -EIO; 4441 if (unlikely(bitmap[0])) 4442 goto xdr_error; 4443 4444 if ((status = decode_attr_space_avail(xdr, bitmap, &fsstat->abytes)) != 0) 4445 goto xdr_error; 4446 if ((status = decode_attr_space_free(xdr, bitmap, &fsstat->fbytes)) != 0) 4447 goto xdr_error; 4448 if ((status = decode_attr_space_total(xdr, bitmap, &fsstat->tbytes)) != 0) 4449 goto xdr_error; 4450 4451 status = verify_attr_len(xdr, savep, attrlen); 4452 xdr_error: 4453 dprintk("%s: xdr returned %d!\n", __func__, -status); 4454 return status; 4455 } 4456 4457 static int decode_pathconf(struct xdr_stream *xdr, struct nfs_pathconf *pathconf) 4458 { 4459 unsigned int savep; 4460 uint32_t attrlen, bitmap[3] = {0}; 4461 int status; 4462 4463 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) 4464 goto xdr_error; 4465 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) 4466 goto xdr_error; 4467 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) 4468 goto xdr_error; 4469 4470 if ((status = decode_attr_maxlink(xdr, bitmap, &pathconf->max_link)) != 0) 4471 goto xdr_error; 4472 if ((status = decode_attr_maxname(xdr, bitmap, &pathconf->max_namelen)) != 0) 4473 goto xdr_error; 4474 4475 status = verify_attr_len(xdr, savep, attrlen); 4476 xdr_error: 4477 dprintk("%s: xdr returned %d!\n", __func__, -status); 4478 return status; 4479 } 4480 4481 static int decode_threshold_hint(struct xdr_stream *xdr, 4482 uint32_t *bitmap, 4483 uint64_t *res, 4484 uint32_t hint_bit) 4485 { 4486 __be32 *p; 4487 4488 *res = 0; 4489 if (likely(bitmap[0] & hint_bit)) { 4490 p = xdr_inline_decode(xdr, 8); 4491 if (unlikely(!p)) 4492 return -EIO; 4493 xdr_decode_hyper(p, res); 4494 } 4495 return 0; 4496 } 4497 4498 static int decode_first_threshold_item4(struct xdr_stream *xdr, 4499 struct nfs4_threshold *res) 4500 { 4501 __be32 *p; 4502 unsigned int savep; 4503 uint32_t bitmap[3] = {0,}, attrlen; 4504 int status; 4505 4506 /* layout type */ 4507 p = xdr_inline_decode(xdr, 4); 4508 if (unlikely(!p)) 4509 return -EIO; 4510 res->l_type = be32_to_cpup(p); 4511 4512 /* thi_hintset bitmap */ 4513 status = decode_attr_bitmap(xdr, bitmap); 4514 if (status < 0) 4515 goto xdr_error; 4516 4517 /* thi_hintlist length */ 4518 status = decode_attr_length(xdr, &attrlen, &savep); 4519 if (status < 0) 4520 goto xdr_error; 4521 /* thi_hintlist */ 4522 status = decode_threshold_hint(xdr, bitmap, &res->rd_sz, THRESHOLD_RD); 4523 if (status < 0) 4524 goto xdr_error; 4525 status = decode_threshold_hint(xdr, bitmap, &res->wr_sz, THRESHOLD_WR); 4526 if (status < 0) 4527 goto xdr_error; 4528 status = decode_threshold_hint(xdr, bitmap, &res->rd_io_sz, 4529 THRESHOLD_RD_IO); 4530 if (status < 0) 4531 goto xdr_error; 4532 status = decode_threshold_hint(xdr, bitmap, &res->wr_io_sz, 4533 THRESHOLD_WR_IO); 4534 if (status < 0) 4535 goto xdr_error; 4536 4537 status = verify_attr_len(xdr, savep, attrlen); 4538 res->bm = bitmap[0]; 4539 4540 dprintk("%s bm=0x%x rd_sz=%llu wr_sz=%llu rd_io=%llu wr_io=%llu\n", 4541 __func__, res->bm, res->rd_sz, res->wr_sz, res->rd_io_sz, 4542 res->wr_io_sz); 4543 xdr_error: 4544 dprintk("%s ret=%d!\n", __func__, status); 4545 return status; 4546 } 4547 4548 /* 4549 * Thresholds on pNFS direct I/O vrs MDS I/O 4550 */ 4551 static int decode_attr_mdsthreshold(struct xdr_stream *xdr, 4552 uint32_t *bitmap, 4553 struct nfs4_threshold *res) 4554 { 4555 __be32 *p; 4556 int status = 0; 4557 uint32_t num; 4558 4559 if (unlikely(bitmap[2] & (FATTR4_WORD2_MDSTHRESHOLD - 1U))) 4560 return -EIO; 4561 if (bitmap[2] & FATTR4_WORD2_MDSTHRESHOLD) { 4562 /* Did the server return an unrequested attribute? */ 4563 if (unlikely(res == NULL)) 4564 return -EREMOTEIO; 4565 p = xdr_inline_decode(xdr, 4); 4566 if (unlikely(!p)) 4567 return -EIO; 4568 num = be32_to_cpup(p); 4569 if (num == 0) 4570 return 0; 4571 if (num > 1) 4572 printk(KERN_INFO "%s: Warning: Multiple pNFS layout " 4573 "drivers per filesystem not supported\n", 4574 __func__); 4575 4576 status = decode_first_threshold_item4(xdr, res); 4577 bitmap[2] &= ~FATTR4_WORD2_MDSTHRESHOLD; 4578 } 4579 return status; 4580 } 4581 4582 static int decode_getfattr_attrs(struct xdr_stream *xdr, uint32_t *bitmap, 4583 struct nfs_fattr *fattr, struct nfs_fh *fh, 4584 struct nfs4_fs_locations *fs_loc, struct nfs4_label *label, 4585 const struct nfs_server *server) 4586 { 4587 int status; 4588 umode_t fmode = 0; 4589 uint32_t type; 4590 int32_t err; 4591 4592 status = decode_attr_type(xdr, bitmap, &type); 4593 if (status < 0) 4594 goto xdr_error; 4595 fattr->mode = 0; 4596 if (status != 0) { 4597 fattr->mode |= nfs_type2fmt[type]; 4598 fattr->valid |= status; 4599 } 4600 4601 status = decode_attr_change(xdr, bitmap, &fattr->change_attr); 4602 if (status < 0) 4603 goto xdr_error; 4604 fattr->valid |= status; 4605 4606 status = decode_attr_size(xdr, bitmap, &fattr->size); 4607 if (status < 0) 4608 goto xdr_error; 4609 fattr->valid |= status; 4610 4611 status = decode_attr_fsid(xdr, bitmap, &fattr->fsid); 4612 if (status < 0) 4613 goto xdr_error; 4614 fattr->valid |= status; 4615 4616 err = 0; 4617 status = decode_attr_error(xdr, bitmap, &err); 4618 if (status < 0) 4619 goto xdr_error; 4620 4621 status = decode_attr_filehandle(xdr, bitmap, fh); 4622 if (status < 0) 4623 goto xdr_error; 4624 4625 status = decode_attr_fileid(xdr, bitmap, &fattr->fileid); 4626 if (status < 0) 4627 goto xdr_error; 4628 fattr->valid |= status; 4629 4630 status = decode_attr_fs_locations(xdr, bitmap, fs_loc); 4631 if (status < 0) 4632 goto xdr_error; 4633 fattr->valid |= status; 4634 4635 status = -EIO; 4636 if (unlikely(bitmap[0])) 4637 goto xdr_error; 4638 4639 status = decode_attr_mode(xdr, bitmap, &fmode); 4640 if (status < 0) 4641 goto xdr_error; 4642 if (status != 0) { 4643 fattr->mode |= fmode; 4644 fattr->valid |= status; 4645 } 4646 4647 status = decode_attr_nlink(xdr, bitmap, &fattr->nlink); 4648 if (status < 0) 4649 goto xdr_error; 4650 fattr->valid |= status; 4651 4652 status = decode_attr_owner(xdr, bitmap, server, &fattr->uid, fattr->owner_name); 4653 if (status < 0) 4654 goto xdr_error; 4655 fattr->valid |= status; 4656 4657 status = decode_attr_group(xdr, bitmap, server, &fattr->gid, fattr->group_name); 4658 if (status < 0) 4659 goto xdr_error; 4660 fattr->valid |= status; 4661 4662 status = decode_attr_rdev(xdr, bitmap, &fattr->rdev); 4663 if (status < 0) 4664 goto xdr_error; 4665 fattr->valid |= status; 4666 4667 status = decode_attr_space_used(xdr, bitmap, &fattr->du.nfs3.used); 4668 if (status < 0) 4669 goto xdr_error; 4670 fattr->valid |= status; 4671 4672 status = decode_attr_time_access(xdr, bitmap, &fattr->atime); 4673 if (status < 0) 4674 goto xdr_error; 4675 fattr->valid |= status; 4676 4677 status = decode_attr_time_metadata(xdr, bitmap, &fattr->ctime); 4678 if (status < 0) 4679 goto xdr_error; 4680 fattr->valid |= status; 4681 4682 status = decode_attr_time_modify(xdr, bitmap, &fattr->mtime); 4683 if (status < 0) 4684 goto xdr_error; 4685 fattr->valid |= status; 4686 4687 status = decode_attr_mounted_on_fileid(xdr, bitmap, &fattr->mounted_on_fileid); 4688 if (status < 0) 4689 goto xdr_error; 4690 fattr->valid |= status; 4691 4692 status = -EIO; 4693 if (unlikely(bitmap[1])) 4694 goto xdr_error; 4695 4696 status = decode_attr_mdsthreshold(xdr, bitmap, fattr->mdsthreshold); 4697 if (status < 0) 4698 goto xdr_error; 4699 4700 if (label) { 4701 status = decode_attr_security_label(xdr, bitmap, label); 4702 if (status < 0) 4703 goto xdr_error; 4704 fattr->valid |= status; 4705 } 4706 4707 xdr_error: 4708 dprintk("%s: xdr returned %d\n", __func__, -status); 4709 return status; 4710 } 4711 4712 static int decode_getfattr_generic(struct xdr_stream *xdr, struct nfs_fattr *fattr, 4713 struct nfs_fh *fh, struct nfs4_fs_locations *fs_loc, 4714 struct nfs4_label *label, const struct nfs_server *server) 4715 { 4716 unsigned int savep; 4717 uint32_t attrlen, 4718 bitmap[3] = {0}; 4719 int status; 4720 4721 status = decode_op_hdr(xdr, OP_GETATTR); 4722 if (status < 0) 4723 goto xdr_error; 4724 4725 status = decode_attr_bitmap(xdr, bitmap); 4726 if (status < 0) 4727 goto xdr_error; 4728 4729 status = decode_attr_length(xdr, &attrlen, &savep); 4730 if (status < 0) 4731 goto xdr_error; 4732 4733 status = decode_getfattr_attrs(xdr, bitmap, fattr, fh, fs_loc, 4734 label, server); 4735 if (status < 0) 4736 goto xdr_error; 4737 4738 status = verify_attr_len(xdr, savep, attrlen); 4739 xdr_error: 4740 dprintk("%s: xdr returned %d\n", __func__, -status); 4741 return status; 4742 } 4743 4744 static int decode_getfattr_label(struct xdr_stream *xdr, struct nfs_fattr *fattr, 4745 struct nfs4_label *label, const struct nfs_server *server) 4746 { 4747 return decode_getfattr_generic(xdr, fattr, NULL, NULL, label, server); 4748 } 4749 4750 static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr, 4751 const struct nfs_server *server) 4752 { 4753 return decode_getfattr_generic(xdr, fattr, NULL, NULL, NULL, server); 4754 } 4755 4756 /* 4757 * Decode potentially multiple layout types. 4758 */ 4759 static int decode_pnfs_layout_types(struct xdr_stream *xdr, 4760 struct nfs_fsinfo *fsinfo) 4761 { 4762 __be32 *p; 4763 uint32_t i; 4764 4765 p = xdr_inline_decode(xdr, 4); 4766 if (unlikely(!p)) 4767 return -EIO; 4768 fsinfo->nlayouttypes = be32_to_cpup(p); 4769 4770 /* pNFS is not supported by the underlying file system */ 4771 if (fsinfo->nlayouttypes == 0) 4772 return 0; 4773 4774 /* Decode and set first layout type, move xdr->p past unused types */ 4775 p = xdr_inline_decode(xdr, fsinfo->nlayouttypes * 4); 4776 if (unlikely(!p)) 4777 return -EIO; 4778 4779 /* If we get too many, then just cap it at the max */ 4780 if (fsinfo->nlayouttypes > NFS_MAX_LAYOUT_TYPES) { 4781 printk(KERN_INFO "NFS: %s: Warning: Too many (%u) pNFS layout types\n", 4782 __func__, fsinfo->nlayouttypes); 4783 fsinfo->nlayouttypes = NFS_MAX_LAYOUT_TYPES; 4784 } 4785 4786 for(i = 0; i < fsinfo->nlayouttypes; ++i) 4787 fsinfo->layouttype[i] = be32_to_cpup(p++); 4788 return 0; 4789 } 4790 4791 /* 4792 * The type of file system exported. 4793 * Note we must ensure that layouttype is set in any non-error case. 4794 */ 4795 static int decode_attr_pnfstype(struct xdr_stream *xdr, uint32_t *bitmap, 4796 struct nfs_fsinfo *fsinfo) 4797 { 4798 int status = 0; 4799 4800 dprintk("%s: bitmap is %x\n", __func__, bitmap[1]); 4801 if (unlikely(bitmap[1] & (FATTR4_WORD1_FS_LAYOUT_TYPES - 1U))) 4802 return -EIO; 4803 if (bitmap[1] & FATTR4_WORD1_FS_LAYOUT_TYPES) { 4804 status = decode_pnfs_layout_types(xdr, fsinfo); 4805 bitmap[1] &= ~FATTR4_WORD1_FS_LAYOUT_TYPES; 4806 } 4807 return status; 4808 } 4809 4810 /* 4811 * The prefered block size for layout directed io 4812 */ 4813 static int decode_attr_layout_blksize(struct xdr_stream *xdr, uint32_t *bitmap, 4814 uint32_t *res) 4815 { 4816 __be32 *p; 4817 4818 dprintk("%s: bitmap is %x\n", __func__, bitmap[2]); 4819 *res = 0; 4820 if (bitmap[2] & FATTR4_WORD2_LAYOUT_BLKSIZE) { 4821 p = xdr_inline_decode(xdr, 4); 4822 if (unlikely(!p)) 4823 return -EIO; 4824 *res = be32_to_cpup(p); 4825 bitmap[2] &= ~FATTR4_WORD2_LAYOUT_BLKSIZE; 4826 } 4827 return 0; 4828 } 4829 4830 /* 4831 * The granularity of a CLONE operation. 4832 */ 4833 static int decode_attr_clone_blksize(struct xdr_stream *xdr, uint32_t *bitmap, 4834 uint32_t *res) 4835 { 4836 __be32 *p; 4837 4838 dprintk("%s: bitmap is %x\n", __func__, bitmap[2]); 4839 *res = 0; 4840 if (bitmap[2] & FATTR4_WORD2_CLONE_BLKSIZE) { 4841 p = xdr_inline_decode(xdr, 4); 4842 if (unlikely(!p)) 4843 return -EIO; 4844 *res = be32_to_cpup(p); 4845 bitmap[2] &= ~FATTR4_WORD2_CLONE_BLKSIZE; 4846 } 4847 return 0; 4848 } 4849 4850 static int decode_attr_change_attr_type(struct xdr_stream *xdr, 4851 uint32_t *bitmap, 4852 enum nfs4_change_attr_type *res) 4853 { 4854 u32 tmp = NFS4_CHANGE_TYPE_IS_UNDEFINED; 4855 4856 dprintk("%s: bitmap is %x\n", __func__, bitmap[2]); 4857 if (bitmap[2] & FATTR4_WORD2_CHANGE_ATTR_TYPE) { 4858 if (xdr_stream_decode_u32(xdr, &tmp)) 4859 return -EIO; 4860 bitmap[2] &= ~FATTR4_WORD2_CHANGE_ATTR_TYPE; 4861 } 4862 4863 switch(tmp) { 4864 case NFS4_CHANGE_TYPE_IS_MONOTONIC_INCR: 4865 case NFS4_CHANGE_TYPE_IS_VERSION_COUNTER: 4866 case NFS4_CHANGE_TYPE_IS_VERSION_COUNTER_NOPNFS: 4867 case NFS4_CHANGE_TYPE_IS_TIME_METADATA: 4868 *res = tmp; 4869 break; 4870 default: 4871 *res = NFS4_CHANGE_TYPE_IS_UNDEFINED; 4872 } 4873 return 0; 4874 } 4875 4876 static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo) 4877 { 4878 unsigned int savep; 4879 uint32_t attrlen, bitmap[3]; 4880 int status; 4881 4882 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) 4883 goto xdr_error; 4884 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) 4885 goto xdr_error; 4886 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) 4887 goto xdr_error; 4888 4889 fsinfo->rtmult = fsinfo->wtmult = 512; /* ??? */ 4890 4891 if ((status = decode_attr_lease_time(xdr, bitmap, &fsinfo->lease_time)) != 0) 4892 goto xdr_error; 4893 if ((status = decode_attr_maxfilesize(xdr, bitmap, &fsinfo->maxfilesize)) != 0) 4894 goto xdr_error; 4895 if ((status = decode_attr_maxread(xdr, bitmap, &fsinfo->rtmax)) != 0) 4896 goto xdr_error; 4897 fsinfo->rtpref = fsinfo->dtpref = fsinfo->rtmax; 4898 if ((status = decode_attr_maxwrite(xdr, bitmap, &fsinfo->wtmax)) != 0) 4899 goto xdr_error; 4900 fsinfo->wtpref = fsinfo->wtmax; 4901 4902 status = -EIO; 4903 if (unlikely(bitmap[0])) 4904 goto xdr_error; 4905 4906 status = decode_attr_time_delta(xdr, bitmap, &fsinfo->time_delta); 4907 if (status != 0) 4908 goto xdr_error; 4909 status = decode_attr_pnfstype(xdr, bitmap, fsinfo); 4910 if (status != 0) 4911 goto xdr_error; 4912 4913 status = -EIO; 4914 if (unlikely(bitmap[1])) 4915 goto xdr_error; 4916 4917 status = decode_attr_layout_blksize(xdr, bitmap, &fsinfo->blksize); 4918 if (status) 4919 goto xdr_error; 4920 status = decode_attr_clone_blksize(xdr, bitmap, &fsinfo->clone_blksize); 4921 if (status) 4922 goto xdr_error; 4923 4924 status = decode_attr_change_attr_type(xdr, bitmap, 4925 &fsinfo->change_attr_type); 4926 if (status) 4927 goto xdr_error; 4928 4929 status = decode_attr_xattrsupport(xdr, bitmap, 4930 &fsinfo->xattr_support); 4931 if (status) 4932 goto xdr_error; 4933 4934 status = verify_attr_len(xdr, savep, attrlen); 4935 xdr_error: 4936 dprintk("%s: xdr returned %d!\n", __func__, -status); 4937 return status; 4938 } 4939 4940 static int decode_getfh(struct xdr_stream *xdr, struct nfs_fh *fh) 4941 { 4942 __be32 *p; 4943 uint32_t len; 4944 int status; 4945 4946 /* Zero handle first to allow comparisons */ 4947 memset(fh, 0, sizeof(*fh)); 4948 4949 status = decode_op_hdr(xdr, OP_GETFH); 4950 if (status) 4951 return status; 4952 4953 p = xdr_inline_decode(xdr, 4); 4954 if (unlikely(!p)) 4955 return -EIO; 4956 len = be32_to_cpup(p); 4957 if (len > NFS4_FHSIZE || len == 0) { 4958 trace_nfs4_xdr_bad_filehandle(xdr, OP_GETFH, NFS4ERR_BADHANDLE); 4959 return -EREMOTEIO; 4960 } 4961 fh->size = len; 4962 p = xdr_inline_decode(xdr, len); 4963 if (unlikely(!p)) 4964 return -EIO; 4965 memcpy(fh->data, p, len); 4966 return 0; 4967 } 4968 4969 static int decode_link(struct xdr_stream *xdr, struct nfs4_change_info *cinfo) 4970 { 4971 int status; 4972 4973 status = decode_op_hdr(xdr, OP_LINK); 4974 if (status) 4975 return status; 4976 return decode_change_info(xdr, cinfo); 4977 } 4978 4979 /* 4980 * We create the owner, so we know a proper owner.id length is 4. 4981 */ 4982 static int decode_lock_denied (struct xdr_stream *xdr, struct file_lock *fl) 4983 { 4984 uint64_t offset, length, clientid; 4985 __be32 *p; 4986 uint32_t namelen, type; 4987 4988 p = xdr_inline_decode(xdr, 32); /* read 32 bytes */ 4989 if (unlikely(!p)) 4990 return -EIO; 4991 p = xdr_decode_hyper(p, &offset); /* read 2 8-byte long words */ 4992 p = xdr_decode_hyper(p, &length); 4993 type = be32_to_cpup(p++); /* 4 byte read */ 4994 if (fl != NULL) { /* manipulate file lock */ 4995 fl->fl_start = (loff_t)offset; 4996 fl->fl_end = fl->fl_start + (loff_t)length - 1; 4997 if (length == ~(uint64_t)0) 4998 fl->fl_end = OFFSET_MAX; 4999 fl->fl_type = F_WRLCK; 5000 if (type & 1) 5001 fl->fl_type = F_RDLCK; 5002 fl->fl_pid = 0; 5003 } 5004 p = xdr_decode_hyper(p, &clientid); /* read 8 bytes */ 5005 namelen = be32_to_cpup(p); /* read 4 bytes */ /* have read all 32 bytes now */ 5006 p = xdr_inline_decode(xdr, namelen); /* variable size field */ 5007 if (likely(!p)) 5008 return -EIO; 5009 return -NFS4ERR_DENIED; 5010 } 5011 5012 static int decode_lock(struct xdr_stream *xdr, struct nfs_lock_res *res) 5013 { 5014 int status; 5015 5016 status = decode_op_hdr(xdr, OP_LOCK); 5017 if (status == -EIO) 5018 goto out; 5019 if (status == 0) { 5020 status = decode_lock_stateid(xdr, &res->stateid); 5021 if (unlikely(status)) 5022 goto out; 5023 } else if (status == -NFS4ERR_DENIED) 5024 status = decode_lock_denied(xdr, NULL); 5025 if (res->open_seqid != NULL) 5026 nfs_increment_open_seqid(status, res->open_seqid); 5027 nfs_increment_lock_seqid(status, res->lock_seqid); 5028 out: 5029 return status; 5030 } 5031 5032 static int decode_lockt(struct xdr_stream *xdr, struct nfs_lockt_res *res) 5033 { 5034 int status; 5035 status = decode_op_hdr(xdr, OP_LOCKT); 5036 if (status == -NFS4ERR_DENIED) 5037 return decode_lock_denied(xdr, res->denied); 5038 return status; 5039 } 5040 5041 static int decode_locku(struct xdr_stream *xdr, struct nfs_locku_res *res) 5042 { 5043 int status; 5044 5045 status = decode_op_hdr(xdr, OP_LOCKU); 5046 if (status != -EIO) 5047 nfs_increment_lock_seqid(status, res->seqid); 5048 if (status == 0) 5049 status = decode_lock_stateid(xdr, &res->stateid); 5050 return status; 5051 } 5052 5053 static int decode_release_lockowner(struct xdr_stream *xdr) 5054 { 5055 return decode_op_hdr(xdr, OP_RELEASE_LOCKOWNER); 5056 } 5057 5058 static int decode_lookup(struct xdr_stream *xdr) 5059 { 5060 return decode_op_hdr(xdr, OP_LOOKUP); 5061 } 5062 5063 static int decode_lookupp(struct xdr_stream *xdr) 5064 { 5065 return decode_op_hdr(xdr, OP_LOOKUPP); 5066 } 5067 5068 /* This is too sick! */ 5069 static int decode_space_limit(struct xdr_stream *xdr, 5070 unsigned long *pagemod_limit) 5071 { 5072 __be32 *p; 5073 uint32_t limit_type, nblocks, blocksize; 5074 u64 maxsize = 0; 5075 5076 p = xdr_inline_decode(xdr, 12); 5077 if (unlikely(!p)) 5078 return -EIO; 5079 limit_type = be32_to_cpup(p++); 5080 switch (limit_type) { 5081 case NFS4_LIMIT_SIZE: 5082 xdr_decode_hyper(p, &maxsize); 5083 break; 5084 case NFS4_LIMIT_BLOCKS: 5085 nblocks = be32_to_cpup(p++); 5086 blocksize = be32_to_cpup(p); 5087 maxsize = (uint64_t)nblocks * (uint64_t)blocksize; 5088 } 5089 maxsize >>= PAGE_SHIFT; 5090 *pagemod_limit = min_t(u64, maxsize, ULONG_MAX); 5091 return 0; 5092 } 5093 5094 static int decode_rw_delegation(struct xdr_stream *xdr, 5095 uint32_t delegation_type, 5096 struct nfs_openres *res) 5097 { 5098 __be32 *p; 5099 int status; 5100 5101 status = decode_delegation_stateid(xdr, &res->delegation); 5102 if (unlikely(status)) 5103 return status; 5104 p = xdr_inline_decode(xdr, 4); 5105 if (unlikely(!p)) 5106 return -EIO; 5107 res->do_recall = be32_to_cpup(p); 5108 5109 switch (delegation_type) { 5110 case NFS4_OPEN_DELEGATE_READ: 5111 res->delegation_type = FMODE_READ; 5112 break; 5113 case NFS4_OPEN_DELEGATE_WRITE: 5114 res->delegation_type = FMODE_WRITE|FMODE_READ; 5115 if (decode_space_limit(xdr, &res->pagemod_limit) < 0) 5116 return -EIO; 5117 } 5118 return decode_ace(xdr, NULL); 5119 } 5120 5121 static int decode_no_delegation(struct xdr_stream *xdr, struct nfs_openres *res) 5122 { 5123 __be32 *p; 5124 uint32_t why_no_delegation; 5125 5126 p = xdr_inline_decode(xdr, 4); 5127 if (unlikely(!p)) 5128 return -EIO; 5129 why_no_delegation = be32_to_cpup(p); 5130 switch (why_no_delegation) { 5131 case WND4_CONTENTION: 5132 case WND4_RESOURCE: 5133 xdr_inline_decode(xdr, 4); 5134 /* Ignore for now */ 5135 } 5136 return 0; 5137 } 5138 5139 static int decode_delegation(struct xdr_stream *xdr, struct nfs_openres *res) 5140 { 5141 __be32 *p; 5142 uint32_t delegation_type; 5143 5144 p = xdr_inline_decode(xdr, 4); 5145 if (unlikely(!p)) 5146 return -EIO; 5147 delegation_type = be32_to_cpup(p); 5148 res->delegation_type = 0; 5149 switch (delegation_type) { 5150 case NFS4_OPEN_DELEGATE_NONE: 5151 return 0; 5152 case NFS4_OPEN_DELEGATE_READ: 5153 case NFS4_OPEN_DELEGATE_WRITE: 5154 return decode_rw_delegation(xdr, delegation_type, res); 5155 case NFS4_OPEN_DELEGATE_NONE_EXT: 5156 return decode_no_delegation(xdr, res); 5157 } 5158 return -EIO; 5159 } 5160 5161 static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res) 5162 { 5163 __be32 *p; 5164 uint32_t savewords, bmlen, i; 5165 int status; 5166 5167 if (!__decode_op_hdr(xdr, OP_OPEN, &status)) 5168 return status; 5169 nfs_increment_open_seqid(status, res->seqid); 5170 if (status) 5171 return status; 5172 status = decode_open_stateid(xdr, &res->stateid); 5173 if (unlikely(status)) 5174 return status; 5175 5176 decode_change_info(xdr, &res->cinfo); 5177 5178 p = xdr_inline_decode(xdr, 8); 5179 if (unlikely(!p)) 5180 return -EIO; 5181 res->rflags = be32_to_cpup(p++); 5182 bmlen = be32_to_cpup(p); 5183 if (bmlen > 10) 5184 goto xdr_error; 5185 5186 p = xdr_inline_decode(xdr, bmlen << 2); 5187 if (unlikely(!p)) 5188 return -EIO; 5189 savewords = min_t(uint32_t, bmlen, NFS4_BITMAP_SIZE); 5190 for (i = 0; i < savewords; ++i) 5191 res->attrset[i] = be32_to_cpup(p++); 5192 for (; i < NFS4_BITMAP_SIZE; i++) 5193 res->attrset[i] = 0; 5194 5195 return decode_delegation(xdr, res); 5196 xdr_error: 5197 dprintk("%s: Bitmap too large! Length = %u\n", __func__, bmlen); 5198 return -EIO; 5199 } 5200 5201 static int decode_open_confirm(struct xdr_stream *xdr, struct nfs_open_confirmres *res) 5202 { 5203 int status; 5204 5205 status = decode_op_hdr(xdr, OP_OPEN_CONFIRM); 5206 if (status != -EIO) 5207 nfs_increment_open_seqid(status, res->seqid); 5208 if (!status) 5209 status = decode_open_stateid(xdr, &res->stateid); 5210 return status; 5211 } 5212 5213 static int decode_open_downgrade(struct xdr_stream *xdr, struct nfs_closeres *res) 5214 { 5215 int status; 5216 5217 status = decode_op_hdr(xdr, OP_OPEN_DOWNGRADE); 5218 if (status != -EIO) 5219 nfs_increment_open_seqid(status, res->seqid); 5220 if (!status) 5221 status = decode_open_stateid(xdr, &res->stateid); 5222 return status; 5223 } 5224 5225 static int decode_putfh(struct xdr_stream *xdr) 5226 { 5227 return decode_op_hdr(xdr, OP_PUTFH); 5228 } 5229 5230 static int decode_putrootfh(struct xdr_stream *xdr) 5231 { 5232 return decode_op_hdr(xdr, OP_PUTROOTFH); 5233 } 5234 5235 static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req, 5236 struct nfs_pgio_res *res) 5237 { 5238 __be32 *p; 5239 uint32_t count, eof, recvd; 5240 int status; 5241 5242 status = decode_op_hdr(xdr, OP_READ); 5243 if (status) 5244 return status; 5245 p = xdr_inline_decode(xdr, 8); 5246 if (unlikely(!p)) 5247 return -EIO; 5248 eof = be32_to_cpup(p++); 5249 count = be32_to_cpup(p); 5250 recvd = xdr_read_pages(xdr, count); 5251 if (count > recvd) { 5252 dprintk("NFS: server cheating in read reply: " 5253 "count %u > recvd %u\n", count, recvd); 5254 count = recvd; 5255 eof = 0; 5256 } 5257 res->eof = eof; 5258 res->count = count; 5259 return 0; 5260 } 5261 5262 static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs4_readdir_res *readdir) 5263 { 5264 int status; 5265 __be32 verf[2]; 5266 5267 status = decode_op_hdr(xdr, OP_READDIR); 5268 if (!status) 5269 status = decode_verifier(xdr, readdir->verifier.data); 5270 if (unlikely(status)) 5271 return status; 5272 memcpy(verf, readdir->verifier.data, sizeof(verf)); 5273 dprintk("%s: verifier = %08x:%08x\n", 5274 __func__, verf[0], verf[1]); 5275 return xdr_read_pages(xdr, xdr->buf->page_len); 5276 } 5277 5278 static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req) 5279 { 5280 struct xdr_buf *rcvbuf = &req->rq_rcv_buf; 5281 u32 len, recvd; 5282 __be32 *p; 5283 int status; 5284 5285 status = decode_op_hdr(xdr, OP_READLINK); 5286 if (status) 5287 return status; 5288 5289 /* Convert length of symlink */ 5290 p = xdr_inline_decode(xdr, 4); 5291 if (unlikely(!p)) 5292 return -EIO; 5293 len = be32_to_cpup(p); 5294 if (len >= rcvbuf->page_len || len <= 0) { 5295 dprintk("nfs: server returned giant symlink!\n"); 5296 return -ENAMETOOLONG; 5297 } 5298 recvd = xdr_read_pages(xdr, len); 5299 if (recvd < len) { 5300 dprintk("NFS: server cheating in readlink reply: " 5301 "count %u > recvd %u\n", len, recvd); 5302 return -EIO; 5303 } 5304 /* 5305 * The XDR encode routine has set things up so that 5306 * the link text will be copied directly into the 5307 * buffer. We just have to do overflow-checking, 5308 * and null-terminate the text (the VFS expects 5309 * null-termination). 5310 */ 5311 xdr_terminate_string(rcvbuf, len); 5312 return 0; 5313 } 5314 5315 static int decode_remove(struct xdr_stream *xdr, struct nfs4_change_info *cinfo) 5316 { 5317 int status; 5318 5319 status = decode_op_hdr(xdr, OP_REMOVE); 5320 if (status) 5321 goto out; 5322 status = decode_change_info(xdr, cinfo); 5323 out: 5324 return status; 5325 } 5326 5327 static int decode_rename(struct xdr_stream *xdr, struct nfs4_change_info *old_cinfo, 5328 struct nfs4_change_info *new_cinfo) 5329 { 5330 int status; 5331 5332 status = decode_op_hdr(xdr, OP_RENAME); 5333 if (status) 5334 goto out; 5335 if ((status = decode_change_info(xdr, old_cinfo))) 5336 goto out; 5337 status = decode_change_info(xdr, new_cinfo); 5338 out: 5339 return status; 5340 } 5341 5342 static int decode_renew(struct xdr_stream *xdr) 5343 { 5344 return decode_op_hdr(xdr, OP_RENEW); 5345 } 5346 5347 static int 5348 decode_restorefh(struct xdr_stream *xdr) 5349 { 5350 return decode_op_hdr(xdr, OP_RESTOREFH); 5351 } 5352 5353 static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req, 5354 struct nfs_getaclres *res) 5355 { 5356 unsigned int savep; 5357 uint32_t attrlen, 5358 bitmap[3] = {0}; 5359 int status; 5360 5361 res->acl_len = 0; 5362 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) 5363 goto out; 5364 5365 xdr_enter_page(xdr, xdr->buf->page_len); 5366 5367 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) 5368 goto out; 5369 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) 5370 goto out; 5371 5372 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACL - 1U))) 5373 return -EIO; 5374 if (likely(bitmap[0] & FATTR4_WORD0_ACL)) { 5375 5376 /* The bitmap (xdr len + bitmaps) and the attr xdr len words 5377 * are stored with the acl data to handle the problem of 5378 * variable length bitmaps.*/ 5379 res->acl_data_offset = xdr_page_pos(xdr); 5380 res->acl_len = attrlen; 5381 5382 /* Check for receive buffer overflow */ 5383 if (res->acl_len > xdr_stream_remaining(xdr) || 5384 res->acl_len + res->acl_data_offset > xdr->buf->page_len) { 5385 res->acl_flags |= NFS4_ACL_TRUNC; 5386 dprintk("NFS: acl reply: attrlen %u > page_len %zu\n", 5387 attrlen, xdr_stream_remaining(xdr)); 5388 } 5389 } else 5390 status = -EOPNOTSUPP; 5391 5392 out: 5393 return status; 5394 } 5395 5396 static int 5397 decode_savefh(struct xdr_stream *xdr) 5398 { 5399 return decode_op_hdr(xdr, OP_SAVEFH); 5400 } 5401 5402 static int decode_setattr(struct xdr_stream *xdr) 5403 { 5404 int status; 5405 5406 status = decode_op_hdr(xdr, OP_SETATTR); 5407 if (status) 5408 return status; 5409 if (decode_bitmap4(xdr, NULL, 0) >= 0) 5410 return 0; 5411 return -EIO; 5412 } 5413 5414 static int decode_setclientid(struct xdr_stream *xdr, struct nfs4_setclientid_res *res) 5415 { 5416 __be32 *p; 5417 uint32_t opnum; 5418 int32_t nfserr; 5419 5420 p = xdr_inline_decode(xdr, 8); 5421 if (unlikely(!p)) 5422 return -EIO; 5423 opnum = be32_to_cpup(p++); 5424 if (opnum != OP_SETCLIENTID) { 5425 dprintk("nfs: decode_setclientid: Server returned operation" 5426 " %d\n", opnum); 5427 return -EIO; 5428 } 5429 nfserr = be32_to_cpup(p); 5430 if (nfserr == NFS_OK) { 5431 p = xdr_inline_decode(xdr, 8 + NFS4_VERIFIER_SIZE); 5432 if (unlikely(!p)) 5433 return -EIO; 5434 p = xdr_decode_hyper(p, &res->clientid); 5435 memcpy(res->confirm.data, p, NFS4_VERIFIER_SIZE); 5436 } else if (nfserr == NFSERR_CLID_INUSE) { 5437 uint32_t len; 5438 5439 /* skip netid string */ 5440 p = xdr_inline_decode(xdr, 4); 5441 if (unlikely(!p)) 5442 return -EIO; 5443 len = be32_to_cpup(p); 5444 p = xdr_inline_decode(xdr, len); 5445 if (unlikely(!p)) 5446 return -EIO; 5447 5448 /* skip uaddr string */ 5449 p = xdr_inline_decode(xdr, 4); 5450 if (unlikely(!p)) 5451 return -EIO; 5452 len = be32_to_cpup(p); 5453 p = xdr_inline_decode(xdr, len); 5454 if (unlikely(!p)) 5455 return -EIO; 5456 return -NFSERR_CLID_INUSE; 5457 } else 5458 return nfs4_stat_to_errno(nfserr); 5459 5460 return 0; 5461 } 5462 5463 static int decode_setclientid_confirm(struct xdr_stream *xdr) 5464 { 5465 return decode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM); 5466 } 5467 5468 static int decode_write(struct xdr_stream *xdr, struct nfs_pgio_res *res) 5469 { 5470 __be32 *p; 5471 int status; 5472 5473 status = decode_op_hdr(xdr, OP_WRITE); 5474 if (status) 5475 return status; 5476 5477 p = xdr_inline_decode(xdr, 8); 5478 if (unlikely(!p)) 5479 return -EIO; 5480 res->count = be32_to_cpup(p++); 5481 res->verf->committed = be32_to_cpup(p++); 5482 return decode_write_verifier(xdr, &res->verf->verifier); 5483 } 5484 5485 static int decode_delegreturn(struct xdr_stream *xdr) 5486 { 5487 return decode_op_hdr(xdr, OP_DELEGRETURN); 5488 } 5489 5490 static int decode_secinfo_gss(struct xdr_stream *xdr, 5491 struct nfs4_secinfo4 *flavor) 5492 { 5493 u32 oid_len; 5494 __be32 *p; 5495 5496 p = xdr_inline_decode(xdr, 4); 5497 if (unlikely(!p)) 5498 return -EIO; 5499 oid_len = be32_to_cpup(p); 5500 if (oid_len > GSS_OID_MAX_LEN) 5501 return -EINVAL; 5502 5503 p = xdr_inline_decode(xdr, oid_len); 5504 if (unlikely(!p)) 5505 return -EIO; 5506 memcpy(flavor->flavor_info.oid.data, p, oid_len); 5507 flavor->flavor_info.oid.len = oid_len; 5508 5509 p = xdr_inline_decode(xdr, 8); 5510 if (unlikely(!p)) 5511 return -EIO; 5512 flavor->flavor_info.qop = be32_to_cpup(p++); 5513 flavor->flavor_info.service = be32_to_cpup(p); 5514 5515 return 0; 5516 } 5517 5518 static int decode_secinfo_common(struct xdr_stream *xdr, struct nfs4_secinfo_res *res) 5519 { 5520 struct nfs4_secinfo4 *sec_flavor; 5521 unsigned int i, num_flavors; 5522 int status; 5523 __be32 *p; 5524 5525 p = xdr_inline_decode(xdr, 4); 5526 if (unlikely(!p)) 5527 return -EIO; 5528 5529 res->flavors->num_flavors = 0; 5530 num_flavors = be32_to_cpup(p); 5531 5532 for (i = 0; i < num_flavors; i++) { 5533 sec_flavor = &res->flavors->flavors[i]; 5534 if ((char *)&sec_flavor[1] - (char *)res->flavors > PAGE_SIZE) 5535 break; 5536 5537 p = xdr_inline_decode(xdr, 4); 5538 if (unlikely(!p)) 5539 return -EIO; 5540 sec_flavor->flavor = be32_to_cpup(p); 5541 5542 if (sec_flavor->flavor == RPC_AUTH_GSS) { 5543 status = decode_secinfo_gss(xdr, sec_flavor); 5544 if (status) 5545 goto out; 5546 } 5547 res->flavors->num_flavors++; 5548 } 5549 5550 status = 0; 5551 out: 5552 return status; 5553 } 5554 5555 static int decode_secinfo(struct xdr_stream *xdr, struct nfs4_secinfo_res *res) 5556 { 5557 int status = decode_op_hdr(xdr, OP_SECINFO); 5558 if (status) 5559 return status; 5560 return decode_secinfo_common(xdr, res); 5561 } 5562 5563 #if defined(CONFIG_NFS_V4_1) 5564 static int decode_secinfo_no_name(struct xdr_stream *xdr, struct nfs4_secinfo_res *res) 5565 { 5566 int status = decode_op_hdr(xdr, OP_SECINFO_NO_NAME); 5567 if (status) 5568 return status; 5569 return decode_secinfo_common(xdr, res); 5570 } 5571 5572 static int decode_op_map(struct xdr_stream *xdr, struct nfs4_op_map *op_map) 5573 { 5574 __be32 *p; 5575 uint32_t bitmap_words; 5576 unsigned int i; 5577 5578 p = xdr_inline_decode(xdr, 4); 5579 if (!p) 5580 return -EIO; 5581 bitmap_words = be32_to_cpup(p++); 5582 if (bitmap_words > NFS4_OP_MAP_NUM_WORDS) 5583 return -EIO; 5584 p = xdr_inline_decode(xdr, 4 * bitmap_words); 5585 for (i = 0; i < bitmap_words; i++) 5586 op_map->u.words[i] = be32_to_cpup(p++); 5587 5588 return 0; 5589 } 5590 5591 static int decode_exchange_id(struct xdr_stream *xdr, 5592 struct nfs41_exchange_id_res *res) 5593 { 5594 __be32 *p; 5595 uint32_t dummy; 5596 char *dummy_str; 5597 int status; 5598 uint32_t impl_id_count; 5599 5600 status = decode_op_hdr(xdr, OP_EXCHANGE_ID); 5601 if (status) 5602 return status; 5603 5604 p = xdr_inline_decode(xdr, 8); 5605 if (unlikely(!p)) 5606 return -EIO; 5607 xdr_decode_hyper(p, &res->clientid); 5608 p = xdr_inline_decode(xdr, 12); 5609 if (unlikely(!p)) 5610 return -EIO; 5611 res->seqid = be32_to_cpup(p++); 5612 res->flags = be32_to_cpup(p++); 5613 5614 res->state_protect.how = be32_to_cpup(p); 5615 switch (res->state_protect.how) { 5616 case SP4_NONE: 5617 break; 5618 case SP4_MACH_CRED: 5619 status = decode_op_map(xdr, &res->state_protect.enforce); 5620 if (status) 5621 return status; 5622 status = decode_op_map(xdr, &res->state_protect.allow); 5623 if (status) 5624 return status; 5625 break; 5626 default: 5627 WARN_ON_ONCE(1); 5628 return -EIO; 5629 } 5630 5631 /* server_owner4.so_minor_id */ 5632 p = xdr_inline_decode(xdr, 8); 5633 if (unlikely(!p)) 5634 return -EIO; 5635 p = xdr_decode_hyper(p, &res->server_owner->minor_id); 5636 5637 /* server_owner4.so_major_id */ 5638 status = decode_opaque_inline(xdr, &dummy, &dummy_str); 5639 if (unlikely(status)) 5640 return status; 5641 memcpy(res->server_owner->major_id, dummy_str, dummy); 5642 res->server_owner->major_id_sz = dummy; 5643 5644 /* server_scope4 */ 5645 status = decode_opaque_inline(xdr, &dummy, &dummy_str); 5646 if (unlikely(status)) 5647 return status; 5648 memcpy(res->server_scope->server_scope, dummy_str, dummy); 5649 res->server_scope->server_scope_sz = dummy; 5650 5651 /* Implementation Id */ 5652 p = xdr_inline_decode(xdr, 4); 5653 if (unlikely(!p)) 5654 return -EIO; 5655 impl_id_count = be32_to_cpup(p++); 5656 5657 if (impl_id_count) { 5658 /* nii_domain */ 5659 status = decode_opaque_inline(xdr, &dummy, &dummy_str); 5660 if (unlikely(status)) 5661 return status; 5662 memcpy(res->impl_id->domain, dummy_str, dummy); 5663 5664 /* nii_name */ 5665 status = decode_opaque_inline(xdr, &dummy, &dummy_str); 5666 if (unlikely(status)) 5667 return status; 5668 memcpy(res->impl_id->name, dummy_str, dummy); 5669 5670 /* nii_date */ 5671 p = xdr_inline_decode(xdr, 12); 5672 if (unlikely(!p)) 5673 return -EIO; 5674 p = xdr_decode_hyper(p, &res->impl_id->date.seconds); 5675 res->impl_id->date.nseconds = be32_to_cpup(p); 5676 5677 /* if there's more than one entry, ignore the rest */ 5678 } 5679 return 0; 5680 } 5681 5682 static int decode_chan_attrs(struct xdr_stream *xdr, 5683 struct nfs4_channel_attrs *attrs) 5684 { 5685 __be32 *p; 5686 u32 nr_attrs, val; 5687 5688 p = xdr_inline_decode(xdr, 28); 5689 if (unlikely(!p)) 5690 return -EIO; 5691 val = be32_to_cpup(p++); /* headerpadsz */ 5692 if (val) 5693 return -EINVAL; /* no support for header padding yet */ 5694 attrs->max_rqst_sz = be32_to_cpup(p++); 5695 attrs->max_resp_sz = be32_to_cpup(p++); 5696 attrs->max_resp_sz_cached = be32_to_cpup(p++); 5697 attrs->max_ops = be32_to_cpup(p++); 5698 attrs->max_reqs = be32_to_cpup(p++); 5699 nr_attrs = be32_to_cpup(p); 5700 if (unlikely(nr_attrs > 1)) { 5701 printk(KERN_WARNING "NFS: %s: Invalid rdma channel attrs " 5702 "count %u\n", __func__, nr_attrs); 5703 return -EINVAL; 5704 } 5705 if (nr_attrs == 1) { 5706 p = xdr_inline_decode(xdr, 4); /* skip rdma_attrs */ 5707 if (unlikely(!p)) 5708 return -EIO; 5709 } 5710 return 0; 5711 } 5712 5713 static int decode_sessionid(struct xdr_stream *xdr, struct nfs4_sessionid *sid) 5714 { 5715 return decode_opaque_fixed(xdr, sid->data, NFS4_MAX_SESSIONID_LEN); 5716 } 5717 5718 static int decode_bind_conn_to_session(struct xdr_stream *xdr, 5719 struct nfs41_bind_conn_to_session_res *res) 5720 { 5721 __be32 *p; 5722 int status; 5723 5724 status = decode_op_hdr(xdr, OP_BIND_CONN_TO_SESSION); 5725 if (!status) 5726 status = decode_sessionid(xdr, &res->sessionid); 5727 if (unlikely(status)) 5728 return status; 5729 5730 /* dir flags, rdma mode bool */ 5731 p = xdr_inline_decode(xdr, 8); 5732 if (unlikely(!p)) 5733 return -EIO; 5734 5735 res->dir = be32_to_cpup(p++); 5736 if (res->dir == 0 || res->dir > NFS4_CDFS4_BOTH) 5737 return -EIO; 5738 if (be32_to_cpup(p) == 0) 5739 res->use_conn_in_rdma_mode = false; 5740 else 5741 res->use_conn_in_rdma_mode = true; 5742 5743 return 0; 5744 } 5745 5746 static int decode_create_session(struct xdr_stream *xdr, 5747 struct nfs41_create_session_res *res) 5748 { 5749 __be32 *p; 5750 int status; 5751 5752 status = decode_op_hdr(xdr, OP_CREATE_SESSION); 5753 if (!status) 5754 status = decode_sessionid(xdr, &res->sessionid); 5755 if (unlikely(status)) 5756 return status; 5757 5758 /* seqid, flags */ 5759 p = xdr_inline_decode(xdr, 8); 5760 if (unlikely(!p)) 5761 return -EIO; 5762 res->seqid = be32_to_cpup(p++); 5763 res->flags = be32_to_cpup(p); 5764 5765 /* Channel attributes */ 5766 status = decode_chan_attrs(xdr, &res->fc_attrs); 5767 if (!status) 5768 status = decode_chan_attrs(xdr, &res->bc_attrs); 5769 return status; 5770 } 5771 5772 static int decode_destroy_session(struct xdr_stream *xdr, void *dummy) 5773 { 5774 return decode_op_hdr(xdr, OP_DESTROY_SESSION); 5775 } 5776 5777 static int decode_destroy_clientid(struct xdr_stream *xdr, void *dummy) 5778 { 5779 return decode_op_hdr(xdr, OP_DESTROY_CLIENTID); 5780 } 5781 5782 static int decode_reclaim_complete(struct xdr_stream *xdr, void *dummy) 5783 { 5784 return decode_op_hdr(xdr, OP_RECLAIM_COMPLETE); 5785 } 5786 #endif /* CONFIG_NFS_V4_1 */ 5787 5788 static int decode_sequence(struct xdr_stream *xdr, 5789 struct nfs4_sequence_res *res, 5790 struct rpc_rqst *rqstp) 5791 { 5792 #if defined(CONFIG_NFS_V4_1) 5793 struct nfs4_session *session; 5794 struct nfs4_sessionid id; 5795 u32 dummy; 5796 int status; 5797 __be32 *p; 5798 5799 if (res->sr_slot == NULL) 5800 return 0; 5801 if (!res->sr_slot->table->session) 5802 return 0; 5803 5804 status = decode_op_hdr(xdr, OP_SEQUENCE); 5805 if (!status) 5806 status = decode_sessionid(xdr, &id); 5807 if (unlikely(status)) 5808 goto out_err; 5809 5810 /* 5811 * If the server returns different values for sessionID, slotID or 5812 * sequence number, the server is looney tunes. 5813 */ 5814 status = -EREMOTEIO; 5815 session = res->sr_slot->table->session; 5816 5817 if (memcmp(id.data, session->sess_id.data, 5818 NFS4_MAX_SESSIONID_LEN)) { 5819 dprintk("%s Invalid session id\n", __func__); 5820 goto out_err; 5821 } 5822 5823 p = xdr_inline_decode(xdr, 20); 5824 if (unlikely(!p)) 5825 goto out_overflow; 5826 5827 /* seqid */ 5828 dummy = be32_to_cpup(p++); 5829 if (dummy != res->sr_slot->seq_nr) { 5830 dprintk("%s Invalid sequence number\n", __func__); 5831 goto out_err; 5832 } 5833 /* slot id */ 5834 dummy = be32_to_cpup(p++); 5835 if (dummy != res->sr_slot->slot_nr) { 5836 dprintk("%s Invalid slot id\n", __func__); 5837 goto out_err; 5838 } 5839 /* highest slot id */ 5840 res->sr_highest_slotid = be32_to_cpup(p++); 5841 /* target highest slot id */ 5842 res->sr_target_highest_slotid = be32_to_cpup(p++); 5843 /* result flags */ 5844 res->sr_status_flags = be32_to_cpup(p); 5845 status = 0; 5846 out_err: 5847 res->sr_status = status; 5848 return status; 5849 out_overflow: 5850 status = -EIO; 5851 goto out_err; 5852 #else /* CONFIG_NFS_V4_1 */ 5853 return 0; 5854 #endif /* CONFIG_NFS_V4_1 */ 5855 } 5856 5857 #if defined(CONFIG_NFS_V4_1) 5858 static int decode_layout_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid) 5859 { 5860 stateid->type = NFS4_LAYOUT_STATEID_TYPE; 5861 return decode_stateid(xdr, stateid); 5862 } 5863 5864 static int decode_getdeviceinfo(struct xdr_stream *xdr, 5865 struct nfs4_getdeviceinfo_res *res) 5866 { 5867 struct pnfs_device *pdev = res->pdev; 5868 __be32 *p; 5869 uint32_t len, type; 5870 int status; 5871 5872 status = decode_op_hdr(xdr, OP_GETDEVICEINFO); 5873 if (status) { 5874 if (status == -ETOOSMALL) { 5875 p = xdr_inline_decode(xdr, 4); 5876 if (unlikely(!p)) 5877 return -EIO; 5878 pdev->mincount = be32_to_cpup(p); 5879 dprintk("%s: Min count too small. mincnt = %u\n", 5880 __func__, pdev->mincount); 5881 } 5882 return status; 5883 } 5884 5885 p = xdr_inline_decode(xdr, 8); 5886 if (unlikely(!p)) 5887 return -EIO; 5888 type = be32_to_cpup(p++); 5889 if (type != pdev->layout_type) { 5890 dprintk("%s: layout mismatch req: %u pdev: %u\n", 5891 __func__, pdev->layout_type, type); 5892 return -EINVAL; 5893 } 5894 /* 5895 * Get the length of the opaque device_addr4. xdr_read_pages places 5896 * the opaque device_addr4 in the xdr_buf->pages (pnfs_device->pages) 5897 * and places the remaining xdr data in xdr_buf->tail 5898 */ 5899 pdev->mincount = be32_to_cpup(p); 5900 if (xdr_read_pages(xdr, pdev->mincount) != pdev->mincount) 5901 return -EIO; 5902 5903 /* Parse notification bitmap, verifying that it is zero. */ 5904 p = xdr_inline_decode(xdr, 4); 5905 if (unlikely(!p)) 5906 return -EIO; 5907 len = be32_to_cpup(p); 5908 if (len) { 5909 uint32_t i; 5910 5911 p = xdr_inline_decode(xdr, 4 * len); 5912 if (unlikely(!p)) 5913 return -EIO; 5914 5915 res->notification = be32_to_cpup(p++); 5916 for (i = 1; i < len; i++) { 5917 if (be32_to_cpup(p++)) { 5918 dprintk("%s: unsupported notification\n", 5919 __func__); 5920 return -EIO; 5921 } 5922 } 5923 } 5924 return 0; 5925 } 5926 5927 static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req, 5928 struct nfs4_layoutget_res *res) 5929 { 5930 __be32 *p; 5931 int status; 5932 u32 layout_count; 5933 u32 recvd; 5934 5935 status = decode_op_hdr(xdr, OP_LAYOUTGET); 5936 if (status) 5937 goto out; 5938 p = xdr_inline_decode(xdr, 4); 5939 if (unlikely(!p)) 5940 goto out_overflow; 5941 res->return_on_close = be32_to_cpup(p); 5942 decode_layout_stateid(xdr, &res->stateid); 5943 p = xdr_inline_decode(xdr, 4); 5944 if (unlikely(!p)) 5945 goto out_overflow; 5946 layout_count = be32_to_cpup(p); 5947 if (!layout_count) { 5948 dprintk("%s: server responded with empty layout array\n", 5949 __func__); 5950 status = -EINVAL; 5951 goto out; 5952 } 5953 5954 p = xdr_inline_decode(xdr, 28); 5955 if (unlikely(!p)) 5956 goto out_overflow; 5957 p = xdr_decode_hyper(p, &res->range.offset); 5958 p = xdr_decode_hyper(p, &res->range.length); 5959 res->range.iomode = be32_to_cpup(p++); 5960 res->type = be32_to_cpup(p++); 5961 res->layoutp->len = be32_to_cpup(p); 5962 5963 dprintk("%s roff:%lu rlen:%lu riomode:%d, lo_type:0x%x, lo.len:%d\n", 5964 __func__, 5965 (unsigned long)res->range.offset, 5966 (unsigned long)res->range.length, 5967 res->range.iomode, 5968 res->type, 5969 res->layoutp->len); 5970 5971 recvd = xdr_read_pages(xdr, res->layoutp->len); 5972 if (res->layoutp->len > recvd) { 5973 dprintk("NFS: server cheating in layoutget reply: " 5974 "layout len %u > recvd %u\n", 5975 res->layoutp->len, recvd); 5976 status = -EINVAL; 5977 goto out; 5978 } 5979 5980 if (layout_count > 1) { 5981 /* We only handle a length one array at the moment. Any 5982 * further entries are just ignored. Note that this means 5983 * the client may see a response that is less than the 5984 * minimum it requested. 5985 */ 5986 dprintk("%s: server responded with %d layouts, dropping tail\n", 5987 __func__, layout_count); 5988 } 5989 5990 out: 5991 res->status = status; 5992 return status; 5993 out_overflow: 5994 status = -EIO; 5995 goto out; 5996 } 5997 5998 static int decode_layoutreturn(struct xdr_stream *xdr, 5999 struct nfs4_layoutreturn_res *res) 6000 { 6001 __be32 *p; 6002 int status; 6003 6004 status = decode_op_hdr(xdr, OP_LAYOUTRETURN); 6005 if (status) 6006 return status; 6007 p = xdr_inline_decode(xdr, 4); 6008 if (unlikely(!p)) 6009 return -EIO; 6010 res->lrs_present = be32_to_cpup(p); 6011 if (res->lrs_present) 6012 status = decode_layout_stateid(xdr, &res->stateid); 6013 else 6014 nfs4_stateid_copy(&res->stateid, &invalid_stateid); 6015 return status; 6016 } 6017 6018 static int decode_layoutcommit(struct xdr_stream *xdr, 6019 struct rpc_rqst *req, 6020 struct nfs4_layoutcommit_res *res) 6021 { 6022 __be32 *p; 6023 __u32 sizechanged; 6024 int status; 6025 6026 status = decode_op_hdr(xdr, OP_LAYOUTCOMMIT); 6027 res->status = status; 6028 if (status) 6029 return status; 6030 6031 p = xdr_inline_decode(xdr, 4); 6032 if (unlikely(!p)) 6033 return -EIO; 6034 sizechanged = be32_to_cpup(p); 6035 6036 if (sizechanged) { 6037 /* throw away new size */ 6038 p = xdr_inline_decode(xdr, 8); 6039 if (unlikely(!p)) 6040 return -EIO; 6041 } 6042 return 0; 6043 } 6044 6045 static int decode_test_stateid(struct xdr_stream *xdr, 6046 struct nfs41_test_stateid_res *res) 6047 { 6048 __be32 *p; 6049 int status; 6050 int num_res; 6051 6052 status = decode_op_hdr(xdr, OP_TEST_STATEID); 6053 if (status) 6054 return status; 6055 6056 p = xdr_inline_decode(xdr, 4); 6057 if (unlikely(!p)) 6058 return -EIO; 6059 num_res = be32_to_cpup(p++); 6060 if (num_res != 1) 6061 return -EIO; 6062 6063 p = xdr_inline_decode(xdr, 4); 6064 if (unlikely(!p)) 6065 return -EIO; 6066 res->status = be32_to_cpup(p++); 6067 6068 return status; 6069 } 6070 6071 static int decode_free_stateid(struct xdr_stream *xdr, 6072 struct nfs41_free_stateid_res *res) 6073 { 6074 res->status = decode_op_hdr(xdr, OP_FREE_STATEID); 6075 return res->status; 6076 } 6077 #else 6078 static inline 6079 int decode_layoutreturn(struct xdr_stream *xdr, 6080 struct nfs4_layoutreturn_res *res) 6081 { 6082 return 0; 6083 } 6084 6085 static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req, 6086 struct nfs4_layoutget_res *res) 6087 { 6088 return 0; 6089 } 6090 6091 #endif /* CONFIG_NFS_V4_1 */ 6092 6093 /* 6094 * END OF "GENERIC" DECODE ROUTINES. 6095 */ 6096 6097 /* 6098 * Decode OPEN_DOWNGRADE response 6099 */ 6100 static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp, 6101 struct xdr_stream *xdr, 6102 void *data) 6103 { 6104 struct nfs_closeres *res = data; 6105 struct compound_hdr hdr; 6106 int status; 6107 6108 status = decode_compound_hdr(xdr, &hdr); 6109 if (status) 6110 goto out; 6111 status = decode_sequence(xdr, &res->seq_res, rqstp); 6112 if (status) 6113 goto out; 6114 status = decode_putfh(xdr); 6115 if (status) 6116 goto out; 6117 if (res->lr_res) { 6118 status = decode_layoutreturn(xdr, res->lr_res); 6119 res->lr_ret = status; 6120 if (status) 6121 goto out; 6122 } 6123 status = decode_open_downgrade(xdr, res); 6124 out: 6125 return status; 6126 } 6127 6128 /* 6129 * Decode ACCESS response 6130 */ 6131 static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6132 void *data) 6133 { 6134 struct nfs4_accessres *res = data; 6135 struct compound_hdr hdr; 6136 int status; 6137 6138 status = decode_compound_hdr(xdr, &hdr); 6139 if (status) 6140 goto out; 6141 status = decode_sequence(xdr, &res->seq_res, rqstp); 6142 if (status) 6143 goto out; 6144 status = decode_putfh(xdr); 6145 if (status != 0) 6146 goto out; 6147 status = decode_access(xdr, &res->supported, &res->access); 6148 if (status != 0) 6149 goto out; 6150 if (res->fattr) 6151 decode_getfattr(xdr, res->fattr, res->server); 6152 out: 6153 return status; 6154 } 6155 6156 /* 6157 * Decode LOOKUP response 6158 */ 6159 static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6160 void *data) 6161 { 6162 struct nfs4_lookup_res *res = data; 6163 struct compound_hdr hdr; 6164 int status; 6165 6166 status = decode_compound_hdr(xdr, &hdr); 6167 if (status) 6168 goto out; 6169 status = decode_sequence(xdr, &res->seq_res, rqstp); 6170 if (status) 6171 goto out; 6172 status = decode_putfh(xdr); 6173 if (status) 6174 goto out; 6175 status = decode_lookup(xdr); 6176 if (status) 6177 goto out; 6178 status = decode_getfh(xdr, res->fh); 6179 if (status) 6180 goto out; 6181 status = decode_getfattr_label(xdr, res->fattr, res->label, res->server); 6182 out: 6183 return status; 6184 } 6185 6186 /* 6187 * Decode LOOKUPP response 6188 */ 6189 static int nfs4_xdr_dec_lookupp(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6190 void *data) 6191 { 6192 struct nfs4_lookupp_res *res = data; 6193 struct compound_hdr hdr; 6194 int status; 6195 6196 status = decode_compound_hdr(xdr, &hdr); 6197 if (status) 6198 goto out; 6199 status = decode_sequence(xdr, &res->seq_res, rqstp); 6200 if (status) 6201 goto out; 6202 status = decode_putfh(xdr); 6203 if (status) 6204 goto out; 6205 status = decode_lookupp(xdr); 6206 if (status) 6207 goto out; 6208 status = decode_getfh(xdr, res->fh); 6209 if (status) 6210 goto out; 6211 status = decode_getfattr_label(xdr, res->fattr, res->label, res->server); 6212 out: 6213 return status; 6214 } 6215 6216 /* 6217 * Decode LOOKUP_ROOT response 6218 */ 6219 static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp, 6220 struct xdr_stream *xdr, 6221 void *data) 6222 { 6223 struct nfs4_lookup_res *res = data; 6224 struct compound_hdr hdr; 6225 int status; 6226 6227 status = decode_compound_hdr(xdr, &hdr); 6228 if (status) 6229 goto out; 6230 status = decode_sequence(xdr, &res->seq_res, rqstp); 6231 if (status) 6232 goto out; 6233 status = decode_putrootfh(xdr); 6234 if (status) 6235 goto out; 6236 status = decode_getfh(xdr, res->fh); 6237 if (status == 0) 6238 status = decode_getfattr_label(xdr, res->fattr, 6239 res->label, res->server); 6240 out: 6241 return status; 6242 } 6243 6244 /* 6245 * Decode REMOVE response 6246 */ 6247 static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6248 void *data) 6249 { 6250 struct nfs_removeres *res = data; 6251 struct compound_hdr hdr; 6252 int status; 6253 6254 status = decode_compound_hdr(xdr, &hdr); 6255 if (status) 6256 goto out; 6257 status = decode_sequence(xdr, &res->seq_res, rqstp); 6258 if (status) 6259 goto out; 6260 status = decode_putfh(xdr); 6261 if (status) 6262 goto out; 6263 status = decode_remove(xdr, &res->cinfo); 6264 out: 6265 return status; 6266 } 6267 6268 /* 6269 * Decode RENAME response 6270 */ 6271 static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6272 void *data) 6273 { 6274 struct nfs_renameres *res = data; 6275 struct compound_hdr hdr; 6276 int status; 6277 6278 status = decode_compound_hdr(xdr, &hdr); 6279 if (status) 6280 goto out; 6281 status = decode_sequence(xdr, &res->seq_res, rqstp); 6282 if (status) 6283 goto out; 6284 status = decode_putfh(xdr); 6285 if (status) 6286 goto out; 6287 status = decode_savefh(xdr); 6288 if (status) 6289 goto out; 6290 status = decode_putfh(xdr); 6291 if (status) 6292 goto out; 6293 status = decode_rename(xdr, &res->old_cinfo, &res->new_cinfo); 6294 out: 6295 return status; 6296 } 6297 6298 /* 6299 * Decode LINK response 6300 */ 6301 static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6302 void *data) 6303 { 6304 struct nfs4_link_res *res = data; 6305 struct compound_hdr hdr; 6306 int status; 6307 6308 status = decode_compound_hdr(xdr, &hdr); 6309 if (status) 6310 goto out; 6311 status = decode_sequence(xdr, &res->seq_res, rqstp); 6312 if (status) 6313 goto out; 6314 status = decode_putfh(xdr); 6315 if (status) 6316 goto out; 6317 status = decode_savefh(xdr); 6318 if (status) 6319 goto out; 6320 status = decode_putfh(xdr); 6321 if (status) 6322 goto out; 6323 status = decode_link(xdr, &res->cinfo); 6324 if (status) 6325 goto out; 6326 /* 6327 * Note order: OP_LINK leaves the directory as the current 6328 * filehandle. 6329 */ 6330 status = decode_restorefh(xdr); 6331 if (status) 6332 goto out; 6333 decode_getfattr_label(xdr, res->fattr, res->label, res->server); 6334 out: 6335 return status; 6336 } 6337 6338 /* 6339 * Decode CREATE response 6340 */ 6341 static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6342 void *data) 6343 { 6344 struct nfs4_create_res *res = data; 6345 struct compound_hdr hdr; 6346 int status; 6347 6348 status = decode_compound_hdr(xdr, &hdr); 6349 if (status) 6350 goto out; 6351 status = decode_sequence(xdr, &res->seq_res, rqstp); 6352 if (status) 6353 goto out; 6354 status = decode_putfh(xdr); 6355 if (status) 6356 goto out; 6357 status = decode_create(xdr, &res->dir_cinfo); 6358 if (status) 6359 goto out; 6360 status = decode_getfh(xdr, res->fh); 6361 if (status) 6362 goto out; 6363 decode_getfattr_label(xdr, res->fattr, res->label, res->server); 6364 out: 6365 return status; 6366 } 6367 6368 /* 6369 * Decode SYMLINK response 6370 */ 6371 static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6372 void *res) 6373 { 6374 return nfs4_xdr_dec_create(rqstp, xdr, res); 6375 } 6376 6377 /* 6378 * Decode GETATTR response 6379 */ 6380 static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6381 void *data) 6382 { 6383 struct nfs4_getattr_res *res = data; 6384 struct compound_hdr hdr; 6385 int status; 6386 6387 status = decode_compound_hdr(xdr, &hdr); 6388 if (status) 6389 goto out; 6390 status = decode_sequence(xdr, &res->seq_res, rqstp); 6391 if (status) 6392 goto out; 6393 status = decode_putfh(xdr); 6394 if (status) 6395 goto out; 6396 status = decode_getfattr_label(xdr, res->fattr, res->label, res->server); 6397 out: 6398 return status; 6399 } 6400 6401 /* 6402 * Encode an SETACL request 6403 */ 6404 static void nfs4_xdr_enc_setacl(struct rpc_rqst *req, struct xdr_stream *xdr, 6405 const void *data) 6406 { 6407 const struct nfs_setaclargs *args = data; 6408 struct compound_hdr hdr = { 6409 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 6410 }; 6411 6412 encode_compound_hdr(xdr, req, &hdr); 6413 encode_sequence(xdr, &args->seq_args, &hdr); 6414 encode_putfh(xdr, args->fh, &hdr); 6415 encode_setacl(xdr, args, &hdr); 6416 encode_nops(&hdr); 6417 } 6418 6419 /* 6420 * Decode SETACL response 6421 */ 6422 static int 6423 nfs4_xdr_dec_setacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6424 void *data) 6425 { 6426 struct nfs_setaclres *res = data; 6427 struct compound_hdr hdr; 6428 int status; 6429 6430 status = decode_compound_hdr(xdr, &hdr); 6431 if (status) 6432 goto out; 6433 status = decode_sequence(xdr, &res->seq_res, rqstp); 6434 if (status) 6435 goto out; 6436 status = decode_putfh(xdr); 6437 if (status) 6438 goto out; 6439 status = decode_setattr(xdr); 6440 out: 6441 return status; 6442 } 6443 6444 /* 6445 * Decode GETACL response 6446 */ 6447 static int 6448 nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6449 void *data) 6450 { 6451 struct nfs_getaclres *res = data; 6452 struct compound_hdr hdr; 6453 int status; 6454 6455 if (res->acl_scratch != NULL) 6456 xdr_set_scratch_page(xdr, res->acl_scratch); 6457 status = decode_compound_hdr(xdr, &hdr); 6458 if (status) 6459 goto out; 6460 status = decode_sequence(xdr, &res->seq_res, rqstp); 6461 if (status) 6462 goto out; 6463 status = decode_putfh(xdr); 6464 if (status) 6465 goto out; 6466 status = decode_getacl(xdr, rqstp, res); 6467 6468 out: 6469 return status; 6470 } 6471 6472 /* 6473 * Decode CLOSE response 6474 */ 6475 static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6476 void *data) 6477 { 6478 struct nfs_closeres *res = data; 6479 struct compound_hdr hdr; 6480 int status; 6481 6482 status = decode_compound_hdr(xdr, &hdr); 6483 if (status) 6484 goto out; 6485 status = decode_sequence(xdr, &res->seq_res, rqstp); 6486 if (status) 6487 goto out; 6488 status = decode_putfh(xdr); 6489 if (status) 6490 goto out; 6491 if (res->lr_res) { 6492 status = decode_layoutreturn(xdr, res->lr_res); 6493 res->lr_ret = status; 6494 if (status) 6495 goto out; 6496 } 6497 if (res->fattr != NULL) { 6498 status = decode_getfattr(xdr, res->fattr, res->server); 6499 if (status != 0) 6500 goto out; 6501 } 6502 status = decode_close(xdr, res); 6503 out: 6504 return status; 6505 } 6506 6507 /* 6508 * Decode OPEN response 6509 */ 6510 static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6511 void *data) 6512 { 6513 struct nfs_openres *res = data; 6514 struct compound_hdr hdr; 6515 int status; 6516 6517 status = decode_compound_hdr(xdr, &hdr); 6518 if (status) 6519 goto out; 6520 status = decode_sequence(xdr, &res->seq_res, rqstp); 6521 if (status) 6522 goto out; 6523 status = decode_putfh(xdr); 6524 if (status) 6525 goto out; 6526 status = decode_open(xdr, res); 6527 if (status) 6528 goto out; 6529 status = decode_getfh(xdr, &res->fh); 6530 if (status) 6531 goto out; 6532 if (res->access_request) 6533 decode_access(xdr, &res->access_supported, &res->access_result); 6534 decode_getfattr_label(xdr, res->f_attr, res->f_label, res->server); 6535 if (res->lg_res) 6536 decode_layoutget(xdr, rqstp, res->lg_res); 6537 out: 6538 return status; 6539 } 6540 6541 /* 6542 * Decode OPEN_CONFIRM response 6543 */ 6544 static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp, 6545 struct xdr_stream *xdr, 6546 void *data) 6547 { 6548 struct nfs_open_confirmres *res = data; 6549 struct compound_hdr hdr; 6550 int status; 6551 6552 status = decode_compound_hdr(xdr, &hdr); 6553 if (status) 6554 goto out; 6555 status = decode_putfh(xdr); 6556 if (status) 6557 goto out; 6558 status = decode_open_confirm(xdr, res); 6559 out: 6560 return status; 6561 } 6562 6563 /* 6564 * Decode OPEN response 6565 */ 6566 static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp, 6567 struct xdr_stream *xdr, 6568 void *data) 6569 { 6570 struct nfs_openres *res = data; 6571 struct compound_hdr hdr; 6572 int status; 6573 6574 status = decode_compound_hdr(xdr, &hdr); 6575 if (status) 6576 goto out; 6577 status = decode_sequence(xdr, &res->seq_res, rqstp); 6578 if (status) 6579 goto out; 6580 status = decode_putfh(xdr); 6581 if (status) 6582 goto out; 6583 status = decode_open(xdr, res); 6584 if (status) 6585 goto out; 6586 if (res->access_request) 6587 decode_access(xdr, &res->access_supported, &res->access_result); 6588 decode_getfattr(xdr, res->f_attr, res->server); 6589 if (res->lg_res) 6590 decode_layoutget(xdr, rqstp, res->lg_res); 6591 out: 6592 return status; 6593 } 6594 6595 /* 6596 * Decode SETATTR response 6597 */ 6598 static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp, 6599 struct xdr_stream *xdr, 6600 void *data) 6601 { 6602 struct nfs_setattrres *res = data; 6603 struct compound_hdr hdr; 6604 int status; 6605 6606 status = decode_compound_hdr(xdr, &hdr); 6607 if (status) 6608 goto out; 6609 status = decode_sequence(xdr, &res->seq_res, rqstp); 6610 if (status) 6611 goto out; 6612 status = decode_putfh(xdr); 6613 if (status) 6614 goto out; 6615 status = decode_setattr(xdr); 6616 if (status) 6617 goto out; 6618 decode_getfattr_label(xdr, res->fattr, res->label, res->server); 6619 out: 6620 return status; 6621 } 6622 6623 /* 6624 * Decode LOCK response 6625 */ 6626 static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6627 void *data) 6628 { 6629 struct nfs_lock_res *res = data; 6630 struct compound_hdr hdr; 6631 int status; 6632 6633 status = decode_compound_hdr(xdr, &hdr); 6634 if (status) 6635 goto out; 6636 status = decode_sequence(xdr, &res->seq_res, rqstp); 6637 if (status) 6638 goto out; 6639 status = decode_putfh(xdr); 6640 if (status) 6641 goto out; 6642 status = decode_lock(xdr, res); 6643 out: 6644 return status; 6645 } 6646 6647 /* 6648 * Decode LOCKT response 6649 */ 6650 static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6651 void *data) 6652 { 6653 struct nfs_lockt_res *res = data; 6654 struct compound_hdr hdr; 6655 int status; 6656 6657 status = decode_compound_hdr(xdr, &hdr); 6658 if (status) 6659 goto out; 6660 status = decode_sequence(xdr, &res->seq_res, rqstp); 6661 if (status) 6662 goto out; 6663 status = decode_putfh(xdr); 6664 if (status) 6665 goto out; 6666 status = decode_lockt(xdr, res); 6667 out: 6668 return status; 6669 } 6670 6671 /* 6672 * Decode LOCKU response 6673 */ 6674 static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6675 void *data) 6676 { 6677 struct nfs_locku_res *res = data; 6678 struct compound_hdr hdr; 6679 int status; 6680 6681 status = decode_compound_hdr(xdr, &hdr); 6682 if (status) 6683 goto out; 6684 status = decode_sequence(xdr, &res->seq_res, rqstp); 6685 if (status) 6686 goto out; 6687 status = decode_putfh(xdr); 6688 if (status) 6689 goto out; 6690 status = decode_locku(xdr, res); 6691 out: 6692 return status; 6693 } 6694 6695 static int nfs4_xdr_dec_release_lockowner(struct rpc_rqst *rqstp, 6696 struct xdr_stream *xdr, void *dummy) 6697 { 6698 struct compound_hdr hdr; 6699 int status; 6700 6701 status = decode_compound_hdr(xdr, &hdr); 6702 if (!status) 6703 status = decode_release_lockowner(xdr); 6704 return status; 6705 } 6706 6707 /* 6708 * Decode READLINK response 6709 */ 6710 static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp, 6711 struct xdr_stream *xdr, 6712 void *data) 6713 { 6714 struct nfs4_readlink_res *res = data; 6715 struct compound_hdr hdr; 6716 int status; 6717 6718 status = decode_compound_hdr(xdr, &hdr); 6719 if (status) 6720 goto out; 6721 status = decode_sequence(xdr, &res->seq_res, rqstp); 6722 if (status) 6723 goto out; 6724 status = decode_putfh(xdr); 6725 if (status) 6726 goto out; 6727 status = decode_readlink(xdr, rqstp); 6728 out: 6729 return status; 6730 } 6731 6732 /* 6733 * Decode READDIR response 6734 */ 6735 static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6736 void *data) 6737 { 6738 struct nfs4_readdir_res *res = data; 6739 struct compound_hdr hdr; 6740 int status; 6741 6742 status = decode_compound_hdr(xdr, &hdr); 6743 if (status) 6744 goto out; 6745 status = decode_sequence(xdr, &res->seq_res, rqstp); 6746 if (status) 6747 goto out; 6748 status = decode_putfh(xdr); 6749 if (status) 6750 goto out; 6751 status = decode_readdir(xdr, rqstp, res); 6752 out: 6753 return status; 6754 } 6755 6756 /* 6757 * Decode Read response 6758 */ 6759 static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6760 void *data) 6761 { 6762 struct nfs_pgio_res *res = data; 6763 struct compound_hdr hdr; 6764 int status; 6765 6766 status = decode_compound_hdr(xdr, &hdr); 6767 res->op_status = hdr.status; 6768 if (status) 6769 goto out; 6770 status = decode_sequence(xdr, &res->seq_res, rqstp); 6771 if (status) 6772 goto out; 6773 status = decode_putfh(xdr); 6774 if (status) 6775 goto out; 6776 status = decode_read(xdr, rqstp, res); 6777 if (!status) 6778 status = res->count; 6779 out: 6780 return status; 6781 } 6782 6783 /* 6784 * Decode WRITE response 6785 */ 6786 static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6787 void *data) 6788 { 6789 struct nfs_pgio_res *res = data; 6790 struct compound_hdr hdr; 6791 int status; 6792 6793 status = decode_compound_hdr(xdr, &hdr); 6794 res->op_status = hdr.status; 6795 if (status) 6796 goto out; 6797 status = decode_sequence(xdr, &res->seq_res, rqstp); 6798 if (status) 6799 goto out; 6800 status = decode_putfh(xdr); 6801 if (status) 6802 goto out; 6803 status = decode_write(xdr, res); 6804 if (status) 6805 goto out; 6806 if (res->fattr) 6807 decode_getfattr(xdr, res->fattr, res->server); 6808 if (!status) 6809 status = res->count; 6810 out: 6811 return status; 6812 } 6813 6814 /* 6815 * Decode COMMIT response 6816 */ 6817 static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6818 void *data) 6819 { 6820 struct nfs_commitres *res = data; 6821 struct compound_hdr hdr; 6822 int status; 6823 6824 status = decode_compound_hdr(xdr, &hdr); 6825 res->op_status = hdr.status; 6826 if (status) 6827 goto out; 6828 status = decode_sequence(xdr, &res->seq_res, rqstp); 6829 if (status) 6830 goto out; 6831 status = decode_putfh(xdr); 6832 if (status) 6833 goto out; 6834 status = decode_commit(xdr, res); 6835 out: 6836 return status; 6837 } 6838 6839 /* 6840 * Decode FSINFO response 6841 */ 6842 static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr, 6843 void *data) 6844 { 6845 struct nfs4_fsinfo_res *res = data; 6846 struct compound_hdr hdr; 6847 int status; 6848 6849 status = decode_compound_hdr(xdr, &hdr); 6850 if (!status) 6851 status = decode_sequence(xdr, &res->seq_res, req); 6852 if (!status) 6853 status = decode_putfh(xdr); 6854 if (!status) 6855 status = decode_fsinfo(xdr, res->fsinfo); 6856 return status; 6857 } 6858 6859 /* 6860 * Decode PATHCONF response 6861 */ 6862 static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr, 6863 void *data) 6864 { 6865 struct nfs4_pathconf_res *res = data; 6866 struct compound_hdr hdr; 6867 int status; 6868 6869 status = decode_compound_hdr(xdr, &hdr); 6870 if (!status) 6871 status = decode_sequence(xdr, &res->seq_res, req); 6872 if (!status) 6873 status = decode_putfh(xdr); 6874 if (!status) 6875 status = decode_pathconf(xdr, res->pathconf); 6876 return status; 6877 } 6878 6879 /* 6880 * Decode STATFS response 6881 */ 6882 static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, struct xdr_stream *xdr, 6883 void *data) 6884 { 6885 struct nfs4_statfs_res *res = data; 6886 struct compound_hdr hdr; 6887 int status; 6888 6889 status = decode_compound_hdr(xdr, &hdr); 6890 if (!status) 6891 status = decode_sequence(xdr, &res->seq_res, req); 6892 if (!status) 6893 status = decode_putfh(xdr); 6894 if (!status) 6895 status = decode_statfs(xdr, res->fsstat); 6896 return status; 6897 } 6898 6899 /* 6900 * Decode GETATTR_BITMAP response 6901 */ 6902 static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req, 6903 struct xdr_stream *xdr, 6904 void *data) 6905 { 6906 struct nfs4_server_caps_res *res = data; 6907 struct compound_hdr hdr; 6908 int status; 6909 6910 status = decode_compound_hdr(xdr, &hdr); 6911 if (status) 6912 goto out; 6913 status = decode_sequence(xdr, &res->seq_res, req); 6914 if (status) 6915 goto out; 6916 status = decode_putfh(xdr); 6917 if (status) 6918 goto out; 6919 status = decode_server_caps(xdr, res); 6920 out: 6921 return status; 6922 } 6923 6924 /* 6925 * Decode RENEW response 6926 */ 6927 static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6928 void *__unused) 6929 { 6930 struct compound_hdr hdr; 6931 int status; 6932 6933 status = decode_compound_hdr(xdr, &hdr); 6934 if (!status) 6935 status = decode_renew(xdr); 6936 return status; 6937 } 6938 6939 /* 6940 * Decode SETCLIENTID response 6941 */ 6942 static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req, 6943 struct xdr_stream *xdr, 6944 void *data) 6945 { 6946 struct nfs4_setclientid_res *res = data; 6947 struct compound_hdr hdr; 6948 int status; 6949 6950 status = decode_compound_hdr(xdr, &hdr); 6951 if (!status) 6952 status = decode_setclientid(xdr, res); 6953 return status; 6954 } 6955 6956 /* 6957 * Decode SETCLIENTID_CONFIRM response 6958 */ 6959 static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req, 6960 struct xdr_stream *xdr, 6961 void *data) 6962 { 6963 struct compound_hdr hdr; 6964 int status; 6965 6966 status = decode_compound_hdr(xdr, &hdr); 6967 if (!status) 6968 status = decode_setclientid_confirm(xdr); 6969 return status; 6970 } 6971 6972 /* 6973 * Decode DELEGRETURN response 6974 */ 6975 static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp, 6976 struct xdr_stream *xdr, 6977 void *data) 6978 { 6979 struct nfs4_delegreturnres *res = data; 6980 struct compound_hdr hdr; 6981 int status; 6982 6983 status = decode_compound_hdr(xdr, &hdr); 6984 if (status) 6985 goto out; 6986 status = decode_sequence(xdr, &res->seq_res, rqstp); 6987 if (status) 6988 goto out; 6989 status = decode_putfh(xdr); 6990 if (status != 0) 6991 goto out; 6992 if (res->lr_res) { 6993 status = decode_layoutreturn(xdr, res->lr_res); 6994 res->lr_ret = status; 6995 if (status) 6996 goto out; 6997 } 6998 if (res->fattr) { 6999 status = decode_getfattr(xdr, res->fattr, res->server); 7000 if (status != 0) 7001 goto out; 7002 } 7003 status = decode_delegreturn(xdr); 7004 out: 7005 return status; 7006 } 7007 7008 /* 7009 * Decode FS_LOCATIONS response 7010 */ 7011 static int nfs4_xdr_dec_fs_locations(struct rpc_rqst *req, 7012 struct xdr_stream *xdr, 7013 void *data) 7014 { 7015 struct nfs4_fs_locations_res *res = data; 7016 struct compound_hdr hdr; 7017 int status; 7018 7019 status = decode_compound_hdr(xdr, &hdr); 7020 if (status) 7021 goto out; 7022 status = decode_sequence(xdr, &res->seq_res, req); 7023 if (status) 7024 goto out; 7025 status = decode_putfh(xdr); 7026 if (status) 7027 goto out; 7028 if (res->migration) { 7029 xdr_enter_page(xdr, PAGE_SIZE); 7030 status = decode_getfattr_generic(xdr, 7031 res->fs_locations->fattr, 7032 NULL, res->fs_locations, 7033 NULL, res->fs_locations->server); 7034 if (status) 7035 goto out; 7036 if (res->renew) 7037 status = decode_renew(xdr); 7038 } else { 7039 status = decode_lookup(xdr); 7040 if (status) 7041 goto out; 7042 xdr_enter_page(xdr, PAGE_SIZE); 7043 status = decode_getfattr_generic(xdr, 7044 res->fs_locations->fattr, 7045 NULL, res->fs_locations, 7046 NULL, res->fs_locations->server); 7047 } 7048 out: 7049 return status; 7050 } 7051 7052 /* 7053 * Decode SECINFO response 7054 */ 7055 static int nfs4_xdr_dec_secinfo(struct rpc_rqst *rqstp, 7056 struct xdr_stream *xdr, 7057 void *data) 7058 { 7059 struct nfs4_secinfo_res *res = data; 7060 struct compound_hdr hdr; 7061 int status; 7062 7063 status = decode_compound_hdr(xdr, &hdr); 7064 if (status) 7065 goto out; 7066 status = decode_sequence(xdr, &res->seq_res, rqstp); 7067 if (status) 7068 goto out; 7069 status = decode_putfh(xdr); 7070 if (status) 7071 goto out; 7072 status = decode_secinfo(xdr, res); 7073 out: 7074 return status; 7075 } 7076 7077 /* 7078 * Decode FSID_PRESENT response 7079 */ 7080 static int nfs4_xdr_dec_fsid_present(struct rpc_rqst *rqstp, 7081 struct xdr_stream *xdr, 7082 void *data) 7083 { 7084 struct nfs4_fsid_present_res *res = data; 7085 struct compound_hdr hdr; 7086 int status; 7087 7088 status = decode_compound_hdr(xdr, &hdr); 7089 if (status) 7090 goto out; 7091 status = decode_sequence(xdr, &res->seq_res, rqstp); 7092 if (status) 7093 goto out; 7094 status = decode_putfh(xdr); 7095 if (status) 7096 goto out; 7097 status = decode_getfh(xdr, res->fh); 7098 if (status) 7099 goto out; 7100 if (res->renew) 7101 status = decode_renew(xdr); 7102 out: 7103 return status; 7104 } 7105 7106 #if defined(CONFIG_NFS_V4_1) 7107 /* 7108 * Decode BIND_CONN_TO_SESSION response 7109 */ 7110 static int nfs4_xdr_dec_bind_conn_to_session(struct rpc_rqst *rqstp, 7111 struct xdr_stream *xdr, 7112 void *res) 7113 { 7114 struct compound_hdr hdr; 7115 int status; 7116 7117 status = decode_compound_hdr(xdr, &hdr); 7118 if (!status) 7119 status = decode_bind_conn_to_session(xdr, res); 7120 return status; 7121 } 7122 7123 /* 7124 * Decode EXCHANGE_ID response 7125 */ 7126 static int nfs4_xdr_dec_exchange_id(struct rpc_rqst *rqstp, 7127 struct xdr_stream *xdr, 7128 void *res) 7129 { 7130 struct compound_hdr hdr; 7131 int status; 7132 7133 status = decode_compound_hdr(xdr, &hdr); 7134 if (!status) 7135 status = decode_exchange_id(xdr, res); 7136 return status; 7137 } 7138 7139 /* 7140 * Decode CREATE_SESSION response 7141 */ 7142 static int nfs4_xdr_dec_create_session(struct rpc_rqst *rqstp, 7143 struct xdr_stream *xdr, 7144 void *res) 7145 { 7146 struct compound_hdr hdr; 7147 int status; 7148 7149 status = decode_compound_hdr(xdr, &hdr); 7150 if (!status) 7151 status = decode_create_session(xdr, res); 7152 return status; 7153 } 7154 7155 /* 7156 * Decode DESTROY_SESSION response 7157 */ 7158 static int nfs4_xdr_dec_destroy_session(struct rpc_rqst *rqstp, 7159 struct xdr_stream *xdr, 7160 void *res) 7161 { 7162 struct compound_hdr hdr; 7163 int status; 7164 7165 status = decode_compound_hdr(xdr, &hdr); 7166 if (!status) 7167 status = decode_destroy_session(xdr, res); 7168 return status; 7169 } 7170 7171 /* 7172 * Decode DESTROY_CLIENTID response 7173 */ 7174 static int nfs4_xdr_dec_destroy_clientid(struct rpc_rqst *rqstp, 7175 struct xdr_stream *xdr, 7176 void *res) 7177 { 7178 struct compound_hdr hdr; 7179 int status; 7180 7181 status = decode_compound_hdr(xdr, &hdr); 7182 if (!status) 7183 status = decode_destroy_clientid(xdr, res); 7184 return status; 7185 } 7186 7187 /* 7188 * Decode SEQUENCE response 7189 */ 7190 static int nfs4_xdr_dec_sequence(struct rpc_rqst *rqstp, 7191 struct xdr_stream *xdr, 7192 void *res) 7193 { 7194 struct compound_hdr hdr; 7195 int status; 7196 7197 status = decode_compound_hdr(xdr, &hdr); 7198 if (!status) 7199 status = decode_sequence(xdr, res, rqstp); 7200 return status; 7201 } 7202 7203 #endif 7204 7205 /* 7206 * Decode GET_LEASE_TIME response 7207 */ 7208 static int nfs4_xdr_dec_get_lease_time(struct rpc_rqst *rqstp, 7209 struct xdr_stream *xdr, 7210 void *data) 7211 { 7212 struct nfs4_get_lease_time_res *res = data; 7213 struct compound_hdr hdr; 7214 int status; 7215 7216 status = decode_compound_hdr(xdr, &hdr); 7217 if (!status) 7218 status = decode_sequence(xdr, &res->lr_seq_res, rqstp); 7219 if (!status) 7220 status = decode_putrootfh(xdr); 7221 if (!status) 7222 status = decode_fsinfo(xdr, res->lr_fsinfo); 7223 return status; 7224 } 7225 7226 #ifdef CONFIG_NFS_V4_1 7227 7228 /* 7229 * Decode RECLAIM_COMPLETE response 7230 */ 7231 static int nfs4_xdr_dec_reclaim_complete(struct rpc_rqst *rqstp, 7232 struct xdr_stream *xdr, 7233 void *data) 7234 { 7235 struct nfs41_reclaim_complete_res *res = data; 7236 struct compound_hdr hdr; 7237 int status; 7238 7239 status = decode_compound_hdr(xdr, &hdr); 7240 if (!status) 7241 status = decode_sequence(xdr, &res->seq_res, rqstp); 7242 if (!status) 7243 status = decode_reclaim_complete(xdr, NULL); 7244 return status; 7245 } 7246 7247 /* 7248 * Decode GETDEVINFO response 7249 */ 7250 static int nfs4_xdr_dec_getdeviceinfo(struct rpc_rqst *rqstp, 7251 struct xdr_stream *xdr, 7252 void *data) 7253 { 7254 struct nfs4_getdeviceinfo_res *res = data; 7255 struct compound_hdr hdr; 7256 int status; 7257 7258 status = decode_compound_hdr(xdr, &hdr); 7259 if (status != 0) 7260 goto out; 7261 status = decode_sequence(xdr, &res->seq_res, rqstp); 7262 if (status != 0) 7263 goto out; 7264 status = decode_getdeviceinfo(xdr, res); 7265 out: 7266 return status; 7267 } 7268 7269 /* 7270 * Decode LAYOUTGET response 7271 */ 7272 static int nfs4_xdr_dec_layoutget(struct rpc_rqst *rqstp, 7273 struct xdr_stream *xdr, 7274 void *data) 7275 { 7276 struct nfs4_layoutget_res *res = data; 7277 struct compound_hdr hdr; 7278 int status; 7279 7280 status = decode_compound_hdr(xdr, &hdr); 7281 if (status) 7282 goto out; 7283 status = decode_sequence(xdr, &res->seq_res, rqstp); 7284 if (status) 7285 goto out; 7286 status = decode_putfh(xdr); 7287 if (status) 7288 goto out; 7289 status = decode_layoutget(xdr, rqstp, res); 7290 out: 7291 return status; 7292 } 7293 7294 /* 7295 * Decode LAYOUTRETURN response 7296 */ 7297 static int nfs4_xdr_dec_layoutreturn(struct rpc_rqst *rqstp, 7298 struct xdr_stream *xdr, 7299 void *data) 7300 { 7301 struct nfs4_layoutreturn_res *res = data; 7302 struct compound_hdr hdr; 7303 int status; 7304 7305 status = decode_compound_hdr(xdr, &hdr); 7306 if (status) 7307 goto out; 7308 status = decode_sequence(xdr, &res->seq_res, rqstp); 7309 if (status) 7310 goto out; 7311 status = decode_putfh(xdr); 7312 if (status) 7313 goto out; 7314 status = decode_layoutreturn(xdr, res); 7315 out: 7316 return status; 7317 } 7318 7319 /* 7320 * Decode LAYOUTCOMMIT response 7321 */ 7322 static int nfs4_xdr_dec_layoutcommit(struct rpc_rqst *rqstp, 7323 struct xdr_stream *xdr, 7324 void *data) 7325 { 7326 struct nfs4_layoutcommit_res *res = data; 7327 struct compound_hdr hdr; 7328 int status; 7329 7330 status = decode_compound_hdr(xdr, &hdr); 7331 if (status) 7332 goto out; 7333 status = decode_sequence(xdr, &res->seq_res, rqstp); 7334 if (status) 7335 goto out; 7336 status = decode_putfh(xdr); 7337 if (status) 7338 goto out; 7339 status = decode_layoutcommit(xdr, rqstp, res); 7340 if (status) 7341 goto out; 7342 decode_getfattr(xdr, res->fattr, res->server); 7343 out: 7344 return status; 7345 } 7346 7347 /* 7348 * Decode SECINFO_NO_NAME response 7349 */ 7350 static int nfs4_xdr_dec_secinfo_no_name(struct rpc_rqst *rqstp, 7351 struct xdr_stream *xdr, 7352 void *data) 7353 { 7354 struct nfs4_secinfo_res *res = data; 7355 struct compound_hdr hdr; 7356 int status; 7357 7358 status = decode_compound_hdr(xdr, &hdr); 7359 if (status) 7360 goto out; 7361 status = decode_sequence(xdr, &res->seq_res, rqstp); 7362 if (status) 7363 goto out; 7364 status = decode_putrootfh(xdr); 7365 if (status) 7366 goto out; 7367 status = decode_secinfo_no_name(xdr, res); 7368 out: 7369 return status; 7370 } 7371 7372 /* 7373 * Decode TEST_STATEID response 7374 */ 7375 static int nfs4_xdr_dec_test_stateid(struct rpc_rqst *rqstp, 7376 struct xdr_stream *xdr, 7377 void *data) 7378 { 7379 struct nfs41_test_stateid_res *res = data; 7380 struct compound_hdr hdr; 7381 int status; 7382 7383 status = decode_compound_hdr(xdr, &hdr); 7384 if (status) 7385 goto out; 7386 status = decode_sequence(xdr, &res->seq_res, rqstp); 7387 if (status) 7388 goto out; 7389 status = decode_test_stateid(xdr, res); 7390 out: 7391 return status; 7392 } 7393 7394 /* 7395 * Decode FREE_STATEID response 7396 */ 7397 static int nfs4_xdr_dec_free_stateid(struct rpc_rqst *rqstp, 7398 struct xdr_stream *xdr, 7399 void *data) 7400 { 7401 struct nfs41_free_stateid_res *res = data; 7402 struct compound_hdr hdr; 7403 int status; 7404 7405 status = decode_compound_hdr(xdr, &hdr); 7406 if (status) 7407 goto out; 7408 status = decode_sequence(xdr, &res->seq_res, rqstp); 7409 if (status) 7410 goto out; 7411 status = decode_free_stateid(xdr, res); 7412 out: 7413 return status; 7414 } 7415 #endif /* CONFIG_NFS_V4_1 */ 7416 7417 /** 7418 * nfs4_decode_dirent - Decode a single NFSv4 directory entry stored in 7419 * the local page cache. 7420 * @xdr: XDR stream where entry resides 7421 * @entry: buffer to fill in with entry data 7422 * @plus: boolean indicating whether this should be a readdirplus entry 7423 * 7424 * Returns zero if successful, otherwise a negative errno value is 7425 * returned. 7426 * 7427 * This function is not invoked during READDIR reply decoding, but 7428 * rather whenever an application invokes the getdents(2) system call 7429 * on a directory already in our cache. 7430 */ 7431 int nfs4_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry, 7432 bool plus) 7433 { 7434 unsigned int savep; 7435 uint32_t bitmap[3] = {0}; 7436 uint32_t len; 7437 uint64_t new_cookie; 7438 __be32 *p = xdr_inline_decode(xdr, 4); 7439 if (unlikely(!p)) 7440 return -EAGAIN; 7441 if (*p == xdr_zero) { 7442 p = xdr_inline_decode(xdr, 4); 7443 if (unlikely(!p)) 7444 return -EAGAIN; 7445 if (*p == xdr_zero) 7446 return -EAGAIN; 7447 entry->eof = 1; 7448 return -EBADCOOKIE; 7449 } 7450 7451 p = xdr_inline_decode(xdr, 12); 7452 if (unlikely(!p)) 7453 return -EAGAIN; 7454 p = xdr_decode_hyper(p, &new_cookie); 7455 entry->len = be32_to_cpup(p); 7456 7457 p = xdr_inline_decode(xdr, entry->len); 7458 if (unlikely(!p)) 7459 return -EAGAIN; 7460 entry->name = (const char *) p; 7461 7462 /* 7463 * In case the server doesn't return an inode number, 7464 * we fake one here. (We don't use inode number 0, 7465 * since glibc seems to choke on it...) 7466 */ 7467 entry->ino = 1; 7468 entry->fattr->valid = 0; 7469 7470 if (decode_attr_bitmap(xdr, bitmap) < 0) 7471 return -EAGAIN; 7472 7473 if (decode_attr_length(xdr, &len, &savep) < 0) 7474 return -EAGAIN; 7475 7476 if (decode_getfattr_attrs(xdr, bitmap, entry->fattr, entry->fh, 7477 NULL, entry->label, entry->server) < 0) 7478 return -EAGAIN; 7479 if (entry->fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID) 7480 entry->ino = entry->fattr->mounted_on_fileid; 7481 else if (entry->fattr->valid & NFS_ATTR_FATTR_FILEID) 7482 entry->ino = entry->fattr->fileid; 7483 7484 entry->d_type = DT_UNKNOWN; 7485 if (entry->fattr->valid & NFS_ATTR_FATTR_TYPE) 7486 entry->d_type = nfs_umode_to_dtype(entry->fattr->mode); 7487 7488 entry->prev_cookie = entry->cookie; 7489 entry->cookie = new_cookie; 7490 7491 return 0; 7492 } 7493 7494 /* 7495 * We need to translate between nfs status return values and 7496 * the local errno values which may not be the same. 7497 */ 7498 static struct { 7499 int stat; 7500 int errno; 7501 } nfs_errtbl[] = { 7502 { NFS4_OK, 0 }, 7503 { NFS4ERR_PERM, -EPERM }, 7504 { NFS4ERR_NOENT, -ENOENT }, 7505 { NFS4ERR_IO, -errno_NFSERR_IO}, 7506 { NFS4ERR_NXIO, -ENXIO }, 7507 { NFS4ERR_ACCESS, -EACCES }, 7508 { NFS4ERR_EXIST, -EEXIST }, 7509 { NFS4ERR_XDEV, -EXDEV }, 7510 { NFS4ERR_NOTDIR, -ENOTDIR }, 7511 { NFS4ERR_ISDIR, -EISDIR }, 7512 { NFS4ERR_INVAL, -EINVAL }, 7513 { NFS4ERR_FBIG, -EFBIG }, 7514 { NFS4ERR_NOSPC, -ENOSPC }, 7515 { NFS4ERR_ROFS, -EROFS }, 7516 { NFS4ERR_MLINK, -EMLINK }, 7517 { NFS4ERR_NAMETOOLONG, -ENAMETOOLONG }, 7518 { NFS4ERR_NOTEMPTY, -ENOTEMPTY }, 7519 { NFS4ERR_DQUOT, -EDQUOT }, 7520 { NFS4ERR_STALE, -ESTALE }, 7521 { NFS4ERR_BADHANDLE, -EBADHANDLE }, 7522 { NFS4ERR_BAD_COOKIE, -EBADCOOKIE }, 7523 { NFS4ERR_NOTSUPP, -ENOTSUPP }, 7524 { NFS4ERR_TOOSMALL, -ETOOSMALL }, 7525 { NFS4ERR_SERVERFAULT, -EREMOTEIO }, 7526 { NFS4ERR_BADTYPE, -EBADTYPE }, 7527 { NFS4ERR_LOCKED, -EAGAIN }, 7528 { NFS4ERR_SYMLINK, -ELOOP }, 7529 { NFS4ERR_OP_ILLEGAL, -EOPNOTSUPP }, 7530 { NFS4ERR_DEADLOCK, -EDEADLK }, 7531 { NFS4ERR_NOXATTR, -ENODATA }, 7532 { NFS4ERR_XATTR2BIG, -E2BIG }, 7533 { -1, -EIO } 7534 }; 7535 7536 /* 7537 * Convert an NFS error code to a local one. 7538 * This one is used jointly by NFSv2 and NFSv3. 7539 */ 7540 static int 7541 nfs4_stat_to_errno(int stat) 7542 { 7543 int i; 7544 for (i = 0; nfs_errtbl[i].stat != -1; i++) { 7545 if (nfs_errtbl[i].stat == stat) 7546 return nfs_errtbl[i].errno; 7547 } 7548 if (stat <= 10000 || stat > 10100) { 7549 /* The server is looney tunes. */ 7550 return -EREMOTEIO; 7551 } 7552 /* If we cannot translate the error, the recovery routines should 7553 * handle it. 7554 * Note: remaining NFSv4 error codes have values > 10000, so should 7555 * not conflict with native Linux error codes. 7556 */ 7557 return -stat; 7558 } 7559 7560 #ifdef CONFIG_NFS_V4_2 7561 #include "nfs42xdr.c" 7562 #endif /* CONFIG_NFS_V4_2 */ 7563 7564 #define PROC(proc, argtype, restype) \ 7565 [NFSPROC4_CLNT_##proc] = { \ 7566 .p_proc = NFSPROC4_COMPOUND, \ 7567 .p_encode = nfs4_xdr_##argtype, \ 7568 .p_decode = nfs4_xdr_##restype, \ 7569 .p_arglen = NFS4_##argtype##_sz, \ 7570 .p_replen = NFS4_##restype##_sz, \ 7571 .p_statidx = NFSPROC4_CLNT_##proc, \ 7572 .p_name = #proc, \ 7573 } 7574 7575 #define STUB(proc) \ 7576 [NFSPROC4_CLNT_##proc] = { \ 7577 .p_name = #proc, \ 7578 } 7579 7580 #if defined(CONFIG_NFS_V4_1) 7581 #define PROC41(proc, argtype, restype) \ 7582 PROC(proc, argtype, restype) 7583 #else 7584 #define PROC41(proc, argtype, restype) \ 7585 STUB(proc) 7586 #endif 7587 7588 #if defined(CONFIG_NFS_V4_2) 7589 #define PROC42(proc, argtype, restype) \ 7590 PROC(proc, argtype, restype) 7591 #else 7592 #define PROC42(proc, argtype, restype) \ 7593 STUB(proc) 7594 #endif 7595 7596 const struct rpc_procinfo nfs4_procedures[] = { 7597 PROC(READ, enc_read, dec_read), 7598 PROC(WRITE, enc_write, dec_write), 7599 PROC(COMMIT, enc_commit, dec_commit), 7600 PROC(OPEN, enc_open, dec_open), 7601 PROC(OPEN_CONFIRM, enc_open_confirm, dec_open_confirm), 7602 PROC(OPEN_NOATTR, enc_open_noattr, dec_open_noattr), 7603 PROC(OPEN_DOWNGRADE, enc_open_downgrade, dec_open_downgrade), 7604 PROC(CLOSE, enc_close, dec_close), 7605 PROC(SETATTR, enc_setattr, dec_setattr), 7606 PROC(FSINFO, enc_fsinfo, dec_fsinfo), 7607 PROC(RENEW, enc_renew, dec_renew), 7608 PROC(SETCLIENTID, enc_setclientid, dec_setclientid), 7609 PROC(SETCLIENTID_CONFIRM, enc_setclientid_confirm, dec_setclientid_confirm), 7610 PROC(LOCK, enc_lock, dec_lock), 7611 PROC(LOCKT, enc_lockt, dec_lockt), 7612 PROC(LOCKU, enc_locku, dec_locku), 7613 PROC(ACCESS, enc_access, dec_access), 7614 PROC(GETATTR, enc_getattr, dec_getattr), 7615 PROC(LOOKUP, enc_lookup, dec_lookup), 7616 PROC(LOOKUP_ROOT, enc_lookup_root, dec_lookup_root), 7617 PROC(REMOVE, enc_remove, dec_remove), 7618 PROC(RENAME, enc_rename, dec_rename), 7619 PROC(LINK, enc_link, dec_link), 7620 PROC(SYMLINK, enc_symlink, dec_symlink), 7621 PROC(CREATE, enc_create, dec_create), 7622 PROC(PATHCONF, enc_pathconf, dec_pathconf), 7623 PROC(STATFS, enc_statfs, dec_statfs), 7624 PROC(READLINK, enc_readlink, dec_readlink), 7625 PROC(READDIR, enc_readdir, dec_readdir), 7626 PROC(SERVER_CAPS, enc_server_caps, dec_server_caps), 7627 PROC(DELEGRETURN, enc_delegreturn, dec_delegreturn), 7628 PROC(GETACL, enc_getacl, dec_getacl), 7629 PROC(SETACL, enc_setacl, dec_setacl), 7630 PROC(FS_LOCATIONS, enc_fs_locations, dec_fs_locations), 7631 PROC(RELEASE_LOCKOWNER, enc_release_lockowner, dec_release_lockowner), 7632 PROC(SECINFO, enc_secinfo, dec_secinfo), 7633 PROC(FSID_PRESENT, enc_fsid_present, dec_fsid_present), 7634 PROC41(EXCHANGE_ID, enc_exchange_id, dec_exchange_id), 7635 PROC41(CREATE_SESSION, enc_create_session, dec_create_session), 7636 PROC41(DESTROY_SESSION, enc_destroy_session, dec_destroy_session), 7637 PROC41(SEQUENCE, enc_sequence, dec_sequence), 7638 PROC(GET_LEASE_TIME, enc_get_lease_time, dec_get_lease_time), 7639 PROC41(RECLAIM_COMPLETE,enc_reclaim_complete, dec_reclaim_complete), 7640 PROC41(GETDEVICEINFO, enc_getdeviceinfo, dec_getdeviceinfo), 7641 PROC41(LAYOUTGET, enc_layoutget, dec_layoutget), 7642 PROC41(LAYOUTCOMMIT, enc_layoutcommit, dec_layoutcommit), 7643 PROC41(LAYOUTRETURN, enc_layoutreturn, dec_layoutreturn), 7644 PROC41(SECINFO_NO_NAME, enc_secinfo_no_name, dec_secinfo_no_name), 7645 PROC41(TEST_STATEID, enc_test_stateid, dec_test_stateid), 7646 PROC41(FREE_STATEID, enc_free_stateid, dec_free_stateid), 7647 STUB(GETDEVICELIST), 7648 PROC41(BIND_CONN_TO_SESSION, 7649 enc_bind_conn_to_session, dec_bind_conn_to_session), 7650 PROC41(DESTROY_CLIENTID,enc_destroy_clientid, dec_destroy_clientid), 7651 PROC42(SEEK, enc_seek, dec_seek), 7652 PROC42(ALLOCATE, enc_allocate, dec_allocate), 7653 PROC42(DEALLOCATE, enc_deallocate, dec_deallocate), 7654 PROC42(LAYOUTSTATS, enc_layoutstats, dec_layoutstats), 7655 PROC42(CLONE, enc_clone, dec_clone), 7656 PROC42(COPY, enc_copy, dec_copy), 7657 PROC42(OFFLOAD_CANCEL, enc_offload_cancel, dec_offload_cancel), 7658 PROC42(COPY_NOTIFY, enc_copy_notify, dec_copy_notify), 7659 PROC(LOOKUPP, enc_lookupp, dec_lookupp), 7660 PROC42(LAYOUTERROR, enc_layouterror, dec_layouterror), 7661 PROC42(GETXATTR, enc_getxattr, dec_getxattr), 7662 PROC42(SETXATTR, enc_setxattr, dec_setxattr), 7663 PROC42(LISTXATTRS, enc_listxattrs, dec_listxattrs), 7664 PROC42(REMOVEXATTR, enc_removexattr, dec_removexattr), 7665 PROC42(READ_PLUS, enc_read_plus, dec_read_plus), 7666 }; 7667 7668 static unsigned int nfs_version4_counts[ARRAY_SIZE(nfs4_procedures)]; 7669 const struct rpc_version nfs_version4 = { 7670 .number = 4, 7671 .nrprocs = ARRAY_SIZE(nfs4_procedures), 7672 .procs = nfs4_procedures, 7673 .counts = nfs_version4_counts, 7674 }; 7675