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 ssize_t ret; 3172 void *ptr; 3173 u32 tmp; 3174 3175 if (xdr_stream_decode_u32(xdr, &tmp) < 0) 3176 return -EIO; 3177 hdr->status = tmp; 3178 3179 ret = xdr_stream_decode_opaque_inline(xdr, &ptr, NFS4_OPAQUE_LIMIT); 3180 if (ret < 0) 3181 return -EIO; 3182 hdr->taglen = ret; 3183 hdr->tag = ptr; 3184 3185 if (xdr_stream_decode_u32(xdr, &tmp) < 0) 3186 return -EIO; 3187 hdr->nops = tmp; 3188 if (unlikely(hdr->nops < 1)) 3189 return nfs4_stat_to_errno(hdr->status); 3190 return 0; 3191 } 3192 3193 static bool __decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected, 3194 int *nfs_retval) 3195 { 3196 __be32 *p; 3197 uint32_t opnum; 3198 int32_t nfserr; 3199 3200 p = xdr_inline_decode(xdr, 8); 3201 if (unlikely(!p)) 3202 goto out_overflow; 3203 opnum = be32_to_cpup(p++); 3204 if (unlikely(opnum != expected)) 3205 goto out_bad_operation; 3206 if (unlikely(*p != cpu_to_be32(NFS_OK))) 3207 goto out_status; 3208 *nfs_retval = 0; 3209 return true; 3210 out_status: 3211 nfserr = be32_to_cpup(p); 3212 trace_nfs4_xdr_status(xdr, opnum, nfserr); 3213 *nfs_retval = nfs4_stat_to_errno(nfserr); 3214 return true; 3215 out_bad_operation: 3216 trace_nfs4_xdr_bad_operation(xdr, opnum, expected); 3217 *nfs_retval = -EREMOTEIO; 3218 return false; 3219 out_overflow: 3220 *nfs_retval = -EIO; 3221 return false; 3222 } 3223 3224 static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected) 3225 { 3226 int retval; 3227 3228 __decode_op_hdr(xdr, expected, &retval); 3229 return retval; 3230 } 3231 3232 /* Dummy routine */ 3233 static int decode_ace(struct xdr_stream *xdr, void *ace) 3234 { 3235 __be32 *p; 3236 unsigned int strlen; 3237 char *str; 3238 3239 p = xdr_inline_decode(xdr, 12); 3240 if (unlikely(!p)) 3241 return -EIO; 3242 return decode_opaque_inline(xdr, &strlen, &str); 3243 } 3244 3245 static ssize_t 3246 decode_bitmap4(struct xdr_stream *xdr, uint32_t *bitmap, size_t sz) 3247 { 3248 ssize_t ret; 3249 3250 ret = xdr_stream_decode_uint32_array(xdr, bitmap, sz); 3251 if (likely(ret >= 0)) 3252 return ret; 3253 if (ret != -EMSGSIZE) 3254 return -EIO; 3255 return sz; 3256 } 3257 3258 static int decode_attr_bitmap(struct xdr_stream *xdr, uint32_t *bitmap) 3259 { 3260 ssize_t ret; 3261 ret = decode_bitmap4(xdr, bitmap, 3); 3262 return ret < 0 ? ret : 0; 3263 } 3264 3265 static int decode_attr_length(struct xdr_stream *xdr, uint32_t *attrlen, unsigned int *savep) 3266 { 3267 __be32 *p; 3268 3269 p = xdr_inline_decode(xdr, 4); 3270 if (unlikely(!p)) 3271 return -EIO; 3272 *attrlen = be32_to_cpup(p); 3273 *savep = xdr_stream_pos(xdr); 3274 return 0; 3275 } 3276 3277 static int decode_attr_supported(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *bitmask) 3278 { 3279 if (likely(bitmap[0] & FATTR4_WORD0_SUPPORTED_ATTRS)) { 3280 int ret; 3281 ret = decode_attr_bitmap(xdr, bitmask); 3282 if (unlikely(ret < 0)) 3283 return ret; 3284 bitmap[0] &= ~FATTR4_WORD0_SUPPORTED_ATTRS; 3285 } else 3286 bitmask[0] = bitmask[1] = bitmask[2] = 0; 3287 dprintk("%s: bitmask=%08x:%08x:%08x\n", __func__, 3288 bitmask[0], bitmask[1], bitmask[2]); 3289 return 0; 3290 } 3291 3292 static int decode_attr_type(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *type) 3293 { 3294 __be32 *p; 3295 int ret = 0; 3296 3297 *type = 0; 3298 if (unlikely(bitmap[0] & (FATTR4_WORD0_TYPE - 1U))) 3299 return -EIO; 3300 if (likely(bitmap[0] & FATTR4_WORD0_TYPE)) { 3301 p = xdr_inline_decode(xdr, 4); 3302 if (unlikely(!p)) 3303 return -EIO; 3304 *type = be32_to_cpup(p); 3305 if (*type < NF4REG || *type > NF4NAMEDATTR) { 3306 dprintk("%s: bad type %d\n", __func__, *type); 3307 return -EIO; 3308 } 3309 bitmap[0] &= ~FATTR4_WORD0_TYPE; 3310 ret = NFS_ATTR_FATTR_TYPE; 3311 } 3312 dprintk("%s: type=0%o\n", __func__, nfs_type2fmt[*type]); 3313 return ret; 3314 } 3315 3316 static int decode_attr_fh_expire_type(struct xdr_stream *xdr, 3317 uint32_t *bitmap, uint32_t *type) 3318 { 3319 __be32 *p; 3320 3321 *type = 0; 3322 if (unlikely(bitmap[0] & (FATTR4_WORD0_FH_EXPIRE_TYPE - 1U))) 3323 return -EIO; 3324 if (likely(bitmap[0] & FATTR4_WORD0_FH_EXPIRE_TYPE)) { 3325 p = xdr_inline_decode(xdr, 4); 3326 if (unlikely(!p)) 3327 return -EIO; 3328 *type = be32_to_cpup(p); 3329 bitmap[0] &= ~FATTR4_WORD0_FH_EXPIRE_TYPE; 3330 } 3331 dprintk("%s: expire type=0x%x\n", __func__, *type); 3332 return 0; 3333 } 3334 3335 static int decode_attr_change(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *change) 3336 { 3337 __be32 *p; 3338 int ret = 0; 3339 3340 *change = 0; 3341 if (unlikely(bitmap[0] & (FATTR4_WORD0_CHANGE - 1U))) 3342 return -EIO; 3343 if (likely(bitmap[0] & FATTR4_WORD0_CHANGE)) { 3344 p = xdr_inline_decode(xdr, 8); 3345 if (unlikely(!p)) 3346 return -EIO; 3347 xdr_decode_hyper(p, change); 3348 bitmap[0] &= ~FATTR4_WORD0_CHANGE; 3349 ret = NFS_ATTR_FATTR_CHANGE; 3350 } 3351 dprintk("%s: change attribute=%Lu\n", __func__, 3352 (unsigned long long)*change); 3353 return ret; 3354 } 3355 3356 static int decode_attr_size(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *size) 3357 { 3358 __be32 *p; 3359 int ret = 0; 3360 3361 *size = 0; 3362 if (unlikely(bitmap[0] & (FATTR4_WORD0_SIZE - 1U))) 3363 return -EIO; 3364 if (likely(bitmap[0] & FATTR4_WORD0_SIZE)) { 3365 p = xdr_inline_decode(xdr, 8); 3366 if (unlikely(!p)) 3367 return -EIO; 3368 xdr_decode_hyper(p, size); 3369 bitmap[0] &= ~FATTR4_WORD0_SIZE; 3370 ret = NFS_ATTR_FATTR_SIZE; 3371 } 3372 dprintk("%s: file size=%Lu\n", __func__, (unsigned long long)*size); 3373 return ret; 3374 } 3375 3376 static int decode_attr_link_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) 3377 { 3378 __be32 *p; 3379 3380 *res = 0; 3381 if (unlikely(bitmap[0] & (FATTR4_WORD0_LINK_SUPPORT - 1U))) 3382 return -EIO; 3383 if (likely(bitmap[0] & FATTR4_WORD0_LINK_SUPPORT)) { 3384 p = xdr_inline_decode(xdr, 4); 3385 if (unlikely(!p)) 3386 return -EIO; 3387 *res = be32_to_cpup(p); 3388 bitmap[0] &= ~FATTR4_WORD0_LINK_SUPPORT; 3389 } 3390 dprintk("%s: link support=%s\n", __func__, *res == 0 ? "false" : "true"); 3391 return 0; 3392 } 3393 3394 static int decode_attr_symlink_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) 3395 { 3396 __be32 *p; 3397 3398 *res = 0; 3399 if (unlikely(bitmap[0] & (FATTR4_WORD0_SYMLINK_SUPPORT - 1U))) 3400 return -EIO; 3401 if (likely(bitmap[0] & FATTR4_WORD0_SYMLINK_SUPPORT)) { 3402 p = xdr_inline_decode(xdr, 4); 3403 if (unlikely(!p)) 3404 return -EIO; 3405 *res = be32_to_cpup(p); 3406 bitmap[0] &= ~FATTR4_WORD0_SYMLINK_SUPPORT; 3407 } 3408 dprintk("%s: symlink support=%s\n", __func__, *res == 0 ? "false" : "true"); 3409 return 0; 3410 } 3411 3412 static int decode_attr_fsid(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fsid *fsid) 3413 { 3414 __be32 *p; 3415 int ret = 0; 3416 3417 fsid->major = 0; 3418 fsid->minor = 0; 3419 if (unlikely(bitmap[0] & (FATTR4_WORD0_FSID - 1U))) 3420 return -EIO; 3421 if (likely(bitmap[0] & FATTR4_WORD0_FSID)) { 3422 p = xdr_inline_decode(xdr, 16); 3423 if (unlikely(!p)) 3424 return -EIO; 3425 p = xdr_decode_hyper(p, &fsid->major); 3426 xdr_decode_hyper(p, &fsid->minor); 3427 bitmap[0] &= ~FATTR4_WORD0_FSID; 3428 ret = NFS_ATTR_FATTR_FSID; 3429 } 3430 dprintk("%s: fsid=(0x%Lx/0x%Lx)\n", __func__, 3431 (unsigned long long)fsid->major, 3432 (unsigned long long)fsid->minor); 3433 return ret; 3434 } 3435 3436 static int decode_attr_lease_time(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) 3437 { 3438 __be32 *p; 3439 3440 *res = 60; 3441 if (unlikely(bitmap[0] & (FATTR4_WORD0_LEASE_TIME - 1U))) 3442 return -EIO; 3443 if (likely(bitmap[0] & FATTR4_WORD0_LEASE_TIME)) { 3444 p = xdr_inline_decode(xdr, 4); 3445 if (unlikely(!p)) 3446 return -EIO; 3447 *res = be32_to_cpup(p); 3448 bitmap[0] &= ~FATTR4_WORD0_LEASE_TIME; 3449 } 3450 dprintk("%s: lease time=%u\n", __func__, (unsigned int)*res); 3451 return 0; 3452 } 3453 3454 static int decode_attr_error(struct xdr_stream *xdr, uint32_t *bitmap, int32_t *res) 3455 { 3456 __be32 *p; 3457 3458 if (unlikely(bitmap[0] & (FATTR4_WORD0_RDATTR_ERROR - 1U))) 3459 return -EIO; 3460 if (likely(bitmap[0] & FATTR4_WORD0_RDATTR_ERROR)) { 3461 p = xdr_inline_decode(xdr, 4); 3462 if (unlikely(!p)) 3463 return -EIO; 3464 bitmap[0] &= ~FATTR4_WORD0_RDATTR_ERROR; 3465 *res = -be32_to_cpup(p); 3466 } 3467 return 0; 3468 } 3469 3470 static int decode_attr_exclcreat_supported(struct xdr_stream *xdr, 3471 uint32_t *bitmap, uint32_t *bitmask) 3472 { 3473 if (likely(bitmap[2] & FATTR4_WORD2_SUPPATTR_EXCLCREAT)) { 3474 int ret; 3475 ret = decode_attr_bitmap(xdr, bitmask); 3476 if (unlikely(ret < 0)) 3477 return ret; 3478 bitmap[2] &= ~FATTR4_WORD2_SUPPATTR_EXCLCREAT; 3479 } else 3480 bitmask[0] = bitmask[1] = bitmask[2] = 0; 3481 dprintk("%s: bitmask=%08x:%08x:%08x\n", __func__, 3482 bitmask[0], bitmask[1], bitmask[2]); 3483 return 0; 3484 } 3485 3486 static int decode_attr_filehandle(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fh *fh) 3487 { 3488 __be32 *p; 3489 u32 len; 3490 3491 if (fh != NULL) 3492 memset(fh, 0, sizeof(*fh)); 3493 3494 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEHANDLE - 1U))) 3495 return -EIO; 3496 if (likely(bitmap[0] & FATTR4_WORD0_FILEHANDLE)) { 3497 p = xdr_inline_decode(xdr, 4); 3498 if (unlikely(!p)) 3499 return -EIO; 3500 len = be32_to_cpup(p); 3501 if (len > NFS4_FHSIZE || len == 0) { 3502 trace_nfs4_xdr_bad_filehandle(xdr, OP_READDIR, 3503 NFS4ERR_BADHANDLE); 3504 return -EREMOTEIO; 3505 } 3506 p = xdr_inline_decode(xdr, len); 3507 if (unlikely(!p)) 3508 return -EIO; 3509 if (fh != NULL) { 3510 memcpy(fh->data, p, len); 3511 fh->size = len; 3512 } 3513 bitmap[0] &= ~FATTR4_WORD0_FILEHANDLE; 3514 } 3515 return 0; 3516 } 3517 3518 static int decode_attr_aclsupport(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) 3519 { 3520 __be32 *p; 3521 3522 *res = 0; 3523 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACLSUPPORT - 1U))) 3524 return -EIO; 3525 if (likely(bitmap[0] & FATTR4_WORD0_ACLSUPPORT)) { 3526 p = xdr_inline_decode(xdr, 4); 3527 if (unlikely(!p)) 3528 return -EIO; 3529 *res = be32_to_cpup(p); 3530 bitmap[0] &= ~FATTR4_WORD0_ACLSUPPORT; 3531 } 3532 dprintk("%s: ACLs supported=%u\n", __func__, (unsigned int)*res); 3533 return 0; 3534 } 3535 3536 static int decode_attr_case_insensitive(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) 3537 { 3538 __be32 *p; 3539 3540 *res = 0; 3541 if (unlikely(bitmap[0] & (FATTR4_WORD0_CASE_INSENSITIVE - 1U))) 3542 return -EIO; 3543 if (likely(bitmap[0] & FATTR4_WORD0_CASE_INSENSITIVE)) { 3544 p = xdr_inline_decode(xdr, 4); 3545 if (unlikely(!p)) 3546 return -EIO; 3547 *res = be32_to_cpup(p); 3548 bitmap[0] &= ~FATTR4_WORD0_CASE_INSENSITIVE; 3549 } 3550 dprintk("%s: case_insensitive=%s\n", __func__, *res == 0 ? "false" : "true"); 3551 return 0; 3552 } 3553 3554 static int decode_attr_case_preserving(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) 3555 { 3556 __be32 *p; 3557 3558 *res = 0; 3559 if (unlikely(bitmap[0] & (FATTR4_WORD0_CASE_PRESERVING - 1U))) 3560 return -EIO; 3561 if (likely(bitmap[0] & FATTR4_WORD0_CASE_PRESERVING)) { 3562 p = xdr_inline_decode(xdr, 4); 3563 if (unlikely(!p)) 3564 return -EIO; 3565 *res = be32_to_cpup(p); 3566 bitmap[0] &= ~FATTR4_WORD0_CASE_PRESERVING; 3567 } 3568 dprintk("%s: case_preserving=%s\n", __func__, *res == 0 ? "false" : "true"); 3569 return 0; 3570 } 3571 3572 static int decode_attr_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid) 3573 { 3574 __be32 *p; 3575 int ret = 0; 3576 3577 *fileid = 0; 3578 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEID - 1U))) 3579 return -EIO; 3580 if (likely(bitmap[0] & FATTR4_WORD0_FILEID)) { 3581 p = xdr_inline_decode(xdr, 8); 3582 if (unlikely(!p)) 3583 return -EIO; 3584 xdr_decode_hyper(p, fileid); 3585 bitmap[0] &= ~FATTR4_WORD0_FILEID; 3586 ret = NFS_ATTR_FATTR_FILEID; 3587 } 3588 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid); 3589 return ret; 3590 } 3591 3592 static int decode_attr_mounted_on_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid) 3593 { 3594 __be32 *p; 3595 int ret = 0; 3596 3597 *fileid = 0; 3598 if (unlikely(bitmap[1] & (FATTR4_WORD1_MOUNTED_ON_FILEID - 1U))) 3599 return -EIO; 3600 if (likely(bitmap[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)) { 3601 p = xdr_inline_decode(xdr, 8); 3602 if (unlikely(!p)) 3603 return -EIO; 3604 xdr_decode_hyper(p, fileid); 3605 bitmap[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID; 3606 ret = NFS_ATTR_FATTR_MOUNTED_ON_FILEID; 3607 } 3608 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid); 3609 return ret; 3610 } 3611 3612 static int decode_attr_files_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 3613 { 3614 __be32 *p; 3615 int status = 0; 3616 3617 *res = 0; 3618 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_AVAIL - 1U))) 3619 return -EIO; 3620 if (likely(bitmap[0] & FATTR4_WORD0_FILES_AVAIL)) { 3621 p = xdr_inline_decode(xdr, 8); 3622 if (unlikely(!p)) 3623 return -EIO; 3624 xdr_decode_hyper(p, res); 3625 bitmap[0] &= ~FATTR4_WORD0_FILES_AVAIL; 3626 } 3627 dprintk("%s: files avail=%Lu\n", __func__, (unsigned long long)*res); 3628 return status; 3629 } 3630 3631 static int decode_attr_files_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 3632 { 3633 __be32 *p; 3634 int status = 0; 3635 3636 *res = 0; 3637 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_FREE - 1U))) 3638 return -EIO; 3639 if (likely(bitmap[0] & FATTR4_WORD0_FILES_FREE)) { 3640 p = xdr_inline_decode(xdr, 8); 3641 if (unlikely(!p)) 3642 return -EIO; 3643 xdr_decode_hyper(p, res); 3644 bitmap[0] &= ~FATTR4_WORD0_FILES_FREE; 3645 } 3646 dprintk("%s: files free=%Lu\n", __func__, (unsigned long long)*res); 3647 return status; 3648 } 3649 3650 static int decode_attr_files_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 3651 { 3652 __be32 *p; 3653 int status = 0; 3654 3655 *res = 0; 3656 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_TOTAL - 1U))) 3657 return -EIO; 3658 if (likely(bitmap[0] & FATTR4_WORD0_FILES_TOTAL)) { 3659 p = xdr_inline_decode(xdr, 8); 3660 if (unlikely(!p)) 3661 return -EIO; 3662 xdr_decode_hyper(p, res); 3663 bitmap[0] &= ~FATTR4_WORD0_FILES_TOTAL; 3664 } 3665 dprintk("%s: files total=%Lu\n", __func__, (unsigned long long)*res); 3666 return status; 3667 } 3668 3669 static int decode_pathname(struct xdr_stream *xdr, struct nfs4_pathname *path) 3670 { 3671 u32 n; 3672 __be32 *p; 3673 int status = 0; 3674 3675 p = xdr_inline_decode(xdr, 4); 3676 if (unlikely(!p)) 3677 return -EIO; 3678 n = be32_to_cpup(p); 3679 if (n == 0) 3680 goto root_path; 3681 dprintk("pathname4: "); 3682 if (n > NFS4_PATHNAME_MAXCOMPONENTS) { 3683 dprintk("cannot parse %d components in path\n", n); 3684 goto out_eio; 3685 } 3686 for (path->ncomponents = 0; path->ncomponents < n; path->ncomponents++) { 3687 struct nfs4_string *component = &path->components[path->ncomponents]; 3688 status = decode_opaque_inline(xdr, &component->len, &component->data); 3689 if (unlikely(status != 0)) 3690 goto out_eio; 3691 ifdebug (XDR) 3692 pr_cont("%s%.*s ", 3693 (path->ncomponents != n ? "/ " : ""), 3694 component->len, component->data); 3695 } 3696 out: 3697 return status; 3698 root_path: 3699 /* a root pathname is sent as a zero component4 */ 3700 path->ncomponents = 1; 3701 path->components[0].len=0; 3702 path->components[0].data=NULL; 3703 dprintk("pathname4: /\n"); 3704 goto out; 3705 out_eio: 3706 dprintk(" status %d", status); 3707 status = -EIO; 3708 goto out; 3709 } 3710 3711 static int decode_attr_fs_locations(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_fs_locations *res) 3712 { 3713 int n; 3714 __be32 *p; 3715 int status = -EIO; 3716 3717 if (unlikely(bitmap[0] & (FATTR4_WORD0_FS_LOCATIONS -1U))) 3718 goto out; 3719 status = 0; 3720 if (unlikely(!(bitmap[0] & FATTR4_WORD0_FS_LOCATIONS))) 3721 goto out; 3722 bitmap[0] &= ~FATTR4_WORD0_FS_LOCATIONS; 3723 status = -EIO; 3724 /* Ignore borken servers that return unrequested attrs */ 3725 if (unlikely(res == NULL)) 3726 goto out; 3727 dprintk("%s: fsroot:\n", __func__); 3728 status = decode_pathname(xdr, &res->fs_path); 3729 if (unlikely(status != 0)) 3730 goto out; 3731 p = xdr_inline_decode(xdr, 4); 3732 if (unlikely(!p)) 3733 goto out_eio; 3734 n = be32_to_cpup(p); 3735 if (n <= 0) 3736 goto out_eio; 3737 for (res->nlocations = 0; res->nlocations < n; res->nlocations++) { 3738 u32 m; 3739 struct nfs4_fs_location *loc; 3740 3741 if (res->nlocations == NFS4_FS_LOCATIONS_MAXENTRIES) 3742 break; 3743 loc = &res->locations[res->nlocations]; 3744 p = xdr_inline_decode(xdr, 4); 3745 if (unlikely(!p)) 3746 goto out_eio; 3747 m = be32_to_cpup(p); 3748 3749 dprintk("%s: servers:\n", __func__); 3750 for (loc->nservers = 0; loc->nservers < m; loc->nservers++) { 3751 struct nfs4_string *server; 3752 3753 if (loc->nservers == NFS4_FS_LOCATION_MAXSERVERS) { 3754 unsigned int i; 3755 dprintk("%s: using first %u of %u servers " 3756 "returned for location %u\n", 3757 __func__, 3758 NFS4_FS_LOCATION_MAXSERVERS, 3759 m, res->nlocations); 3760 for (i = loc->nservers; i < m; i++) { 3761 unsigned int len; 3762 char *data; 3763 status = decode_opaque_inline(xdr, &len, &data); 3764 if (unlikely(status != 0)) 3765 goto out_eio; 3766 } 3767 break; 3768 } 3769 server = &loc->servers[loc->nservers]; 3770 status = decode_opaque_inline(xdr, &server->len, &server->data); 3771 if (unlikely(status != 0)) 3772 goto out_eio; 3773 dprintk("%s ", server->data); 3774 } 3775 status = decode_pathname(xdr, &loc->rootpath); 3776 if (unlikely(status != 0)) 3777 goto out_eio; 3778 } 3779 if (res->nlocations != 0) 3780 status = NFS_ATTR_FATTR_V4_LOCATIONS; 3781 out: 3782 dprintk("%s: fs_locations done, error = %d\n", __func__, status); 3783 return status; 3784 out_eio: 3785 status = -EIO; 3786 goto out; 3787 } 3788 3789 static int decode_attr_maxfilesize(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 3790 { 3791 __be32 *p; 3792 int status = 0; 3793 3794 *res = 0; 3795 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXFILESIZE - 1U))) 3796 return -EIO; 3797 if (likely(bitmap[0] & FATTR4_WORD0_MAXFILESIZE)) { 3798 p = xdr_inline_decode(xdr, 8); 3799 if (unlikely(!p)) 3800 return -EIO; 3801 xdr_decode_hyper(p, res); 3802 bitmap[0] &= ~FATTR4_WORD0_MAXFILESIZE; 3803 } 3804 dprintk("%s: maxfilesize=%Lu\n", __func__, (unsigned long long)*res); 3805 return status; 3806 } 3807 3808 static int decode_attr_maxlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxlink) 3809 { 3810 __be32 *p; 3811 int status = 0; 3812 3813 *maxlink = 1; 3814 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXLINK - 1U))) 3815 return -EIO; 3816 if (likely(bitmap[0] & FATTR4_WORD0_MAXLINK)) { 3817 p = xdr_inline_decode(xdr, 4); 3818 if (unlikely(!p)) 3819 return -EIO; 3820 *maxlink = be32_to_cpup(p); 3821 bitmap[0] &= ~FATTR4_WORD0_MAXLINK; 3822 } 3823 dprintk("%s: maxlink=%u\n", __func__, *maxlink); 3824 return status; 3825 } 3826 3827 static int decode_attr_maxname(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxname) 3828 { 3829 __be32 *p; 3830 int status = 0; 3831 3832 *maxname = 1024; 3833 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXNAME - 1U))) 3834 return -EIO; 3835 if (likely(bitmap[0] & FATTR4_WORD0_MAXNAME)) { 3836 p = xdr_inline_decode(xdr, 4); 3837 if (unlikely(!p)) 3838 return -EIO; 3839 *maxname = be32_to_cpup(p); 3840 bitmap[0] &= ~FATTR4_WORD0_MAXNAME; 3841 } 3842 dprintk("%s: maxname=%u\n", __func__, *maxname); 3843 return status; 3844 } 3845 3846 static int decode_attr_maxread(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) 3847 { 3848 __be32 *p; 3849 int status = 0; 3850 3851 *res = 1024; 3852 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXREAD - 1U))) 3853 return -EIO; 3854 if (likely(bitmap[0] & FATTR4_WORD0_MAXREAD)) { 3855 uint64_t maxread; 3856 p = xdr_inline_decode(xdr, 8); 3857 if (unlikely(!p)) 3858 return -EIO; 3859 xdr_decode_hyper(p, &maxread); 3860 if (maxread > 0x7FFFFFFF) 3861 maxread = 0x7FFFFFFF; 3862 *res = (uint32_t)maxread; 3863 bitmap[0] &= ~FATTR4_WORD0_MAXREAD; 3864 } 3865 dprintk("%s: maxread=%lu\n", __func__, (unsigned long)*res); 3866 return status; 3867 } 3868 3869 static int decode_attr_maxwrite(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) 3870 { 3871 __be32 *p; 3872 int status = 0; 3873 3874 *res = 1024; 3875 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXWRITE - 1U))) 3876 return -EIO; 3877 if (likely(bitmap[0] & FATTR4_WORD0_MAXWRITE)) { 3878 uint64_t maxwrite; 3879 p = xdr_inline_decode(xdr, 8); 3880 if (unlikely(!p)) 3881 return -EIO; 3882 xdr_decode_hyper(p, &maxwrite); 3883 if (maxwrite > 0x7FFFFFFF) 3884 maxwrite = 0x7FFFFFFF; 3885 *res = (uint32_t)maxwrite; 3886 bitmap[0] &= ~FATTR4_WORD0_MAXWRITE; 3887 } 3888 dprintk("%s: maxwrite=%lu\n", __func__, (unsigned long)*res); 3889 return status; 3890 } 3891 3892 static int decode_attr_mode(struct xdr_stream *xdr, uint32_t *bitmap, umode_t *mode) 3893 { 3894 uint32_t tmp; 3895 __be32 *p; 3896 int ret = 0; 3897 3898 *mode = 0; 3899 if (unlikely(bitmap[1] & (FATTR4_WORD1_MODE - 1U))) 3900 return -EIO; 3901 if (likely(bitmap[1] & FATTR4_WORD1_MODE)) { 3902 p = xdr_inline_decode(xdr, 4); 3903 if (unlikely(!p)) 3904 return -EIO; 3905 tmp = be32_to_cpup(p); 3906 *mode = tmp & ~S_IFMT; 3907 bitmap[1] &= ~FATTR4_WORD1_MODE; 3908 ret = NFS_ATTR_FATTR_MODE; 3909 } 3910 dprintk("%s: file mode=0%o\n", __func__, (unsigned int)*mode); 3911 return ret; 3912 } 3913 3914 static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *nlink) 3915 { 3916 __be32 *p; 3917 int ret = 0; 3918 3919 *nlink = 1; 3920 if (unlikely(bitmap[1] & (FATTR4_WORD1_NUMLINKS - 1U))) 3921 return -EIO; 3922 if (likely(bitmap[1] & FATTR4_WORD1_NUMLINKS)) { 3923 p = xdr_inline_decode(xdr, 4); 3924 if (unlikely(!p)) 3925 return -EIO; 3926 *nlink = be32_to_cpup(p); 3927 bitmap[1] &= ~FATTR4_WORD1_NUMLINKS; 3928 ret = NFS_ATTR_FATTR_NLINK; 3929 } 3930 dprintk("%s: nlink=%u\n", __func__, (unsigned int)*nlink); 3931 return ret; 3932 } 3933 3934 static ssize_t decode_nfs4_string(struct xdr_stream *xdr, 3935 struct nfs4_string *name, gfp_t gfp_flags) 3936 { 3937 ssize_t ret; 3938 3939 ret = xdr_stream_decode_string_dup(xdr, &name->data, 3940 XDR_MAX_NETOBJ, gfp_flags); 3941 name->len = 0; 3942 if (ret > 0) 3943 name->len = ret; 3944 return ret; 3945 } 3946 3947 static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap, 3948 const struct nfs_server *server, kuid_t *uid, 3949 struct nfs4_string *owner_name) 3950 { 3951 ssize_t len; 3952 char *p; 3953 3954 *uid = make_kuid(&init_user_ns, -2); 3955 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER - 1U))) 3956 return -EIO; 3957 if (!(bitmap[1] & FATTR4_WORD1_OWNER)) 3958 return 0; 3959 bitmap[1] &= ~FATTR4_WORD1_OWNER; 3960 3961 if (owner_name != NULL) { 3962 len = decode_nfs4_string(xdr, owner_name, GFP_NOIO); 3963 if (len <= 0) 3964 goto out; 3965 dprintk("%s: name=%s\n", __func__, owner_name->data); 3966 return NFS_ATTR_FATTR_OWNER_NAME; 3967 } else { 3968 len = xdr_stream_decode_opaque_inline(xdr, (void **)&p, 3969 XDR_MAX_NETOBJ); 3970 if (len <= 0 || nfs_map_name_to_uid(server, p, len, uid) != 0) 3971 goto out; 3972 dprintk("%s: uid=%d\n", __func__, (int)from_kuid(&init_user_ns, *uid)); 3973 return NFS_ATTR_FATTR_OWNER; 3974 } 3975 out: 3976 if (len == -EBADMSG) 3977 return -EIO; 3978 return 0; 3979 } 3980 3981 static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap, 3982 const struct nfs_server *server, kgid_t *gid, 3983 struct nfs4_string *group_name) 3984 { 3985 ssize_t len; 3986 char *p; 3987 3988 *gid = make_kgid(&init_user_ns, -2); 3989 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER_GROUP - 1U))) 3990 return -EIO; 3991 if (!(bitmap[1] & FATTR4_WORD1_OWNER_GROUP)) 3992 return 0; 3993 bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP; 3994 3995 if (group_name != NULL) { 3996 len = decode_nfs4_string(xdr, group_name, GFP_NOIO); 3997 if (len <= 0) 3998 goto out; 3999 dprintk("%s: name=%s\n", __func__, group_name->data); 4000 return NFS_ATTR_FATTR_GROUP_NAME; 4001 } else { 4002 len = xdr_stream_decode_opaque_inline(xdr, (void **)&p, 4003 XDR_MAX_NETOBJ); 4004 if (len <= 0 || nfs_map_group_to_gid(server, p, len, gid) != 0) 4005 goto out; 4006 dprintk("%s: gid=%d\n", __func__, (int)from_kgid(&init_user_ns, *gid)); 4007 return NFS_ATTR_FATTR_GROUP; 4008 } 4009 out: 4010 if (len == -EBADMSG) 4011 return -EIO; 4012 return 0; 4013 } 4014 4015 static int decode_attr_rdev(struct xdr_stream *xdr, uint32_t *bitmap, dev_t *rdev) 4016 { 4017 uint32_t major = 0, minor = 0; 4018 __be32 *p; 4019 int ret = 0; 4020 4021 *rdev = MKDEV(0,0); 4022 if (unlikely(bitmap[1] & (FATTR4_WORD1_RAWDEV - 1U))) 4023 return -EIO; 4024 if (likely(bitmap[1] & FATTR4_WORD1_RAWDEV)) { 4025 dev_t tmp; 4026 4027 p = xdr_inline_decode(xdr, 8); 4028 if (unlikely(!p)) 4029 return -EIO; 4030 major = be32_to_cpup(p++); 4031 minor = be32_to_cpup(p); 4032 tmp = MKDEV(major, minor); 4033 if (MAJOR(tmp) == major && MINOR(tmp) == minor) 4034 *rdev = tmp; 4035 bitmap[1] &= ~ FATTR4_WORD1_RAWDEV; 4036 ret = NFS_ATTR_FATTR_RDEV; 4037 } 4038 dprintk("%s: rdev=(0x%x:0x%x)\n", __func__, major, minor); 4039 return ret; 4040 } 4041 4042 static int decode_attr_space_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 4043 { 4044 __be32 *p; 4045 int status = 0; 4046 4047 *res = 0; 4048 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_AVAIL - 1U))) 4049 return -EIO; 4050 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_AVAIL)) { 4051 p = xdr_inline_decode(xdr, 8); 4052 if (unlikely(!p)) 4053 return -EIO; 4054 xdr_decode_hyper(p, res); 4055 bitmap[1] &= ~FATTR4_WORD1_SPACE_AVAIL; 4056 } 4057 dprintk("%s: space avail=%Lu\n", __func__, (unsigned long long)*res); 4058 return status; 4059 } 4060 4061 static int decode_attr_space_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 4062 { 4063 __be32 *p; 4064 int status = 0; 4065 4066 *res = 0; 4067 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_FREE - 1U))) 4068 return -EIO; 4069 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_FREE)) { 4070 p = xdr_inline_decode(xdr, 8); 4071 if (unlikely(!p)) 4072 return -EIO; 4073 xdr_decode_hyper(p, res); 4074 bitmap[1] &= ~FATTR4_WORD1_SPACE_FREE; 4075 } 4076 dprintk("%s: space free=%Lu\n", __func__, (unsigned long long)*res); 4077 return status; 4078 } 4079 4080 static int decode_attr_space_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 4081 { 4082 __be32 *p; 4083 int status = 0; 4084 4085 *res = 0; 4086 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_TOTAL - 1U))) 4087 return -EIO; 4088 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_TOTAL)) { 4089 p = xdr_inline_decode(xdr, 8); 4090 if (unlikely(!p)) 4091 return -EIO; 4092 xdr_decode_hyper(p, res); 4093 bitmap[1] &= ~FATTR4_WORD1_SPACE_TOTAL; 4094 } 4095 dprintk("%s: space total=%Lu\n", __func__, (unsigned long long)*res); 4096 return status; 4097 } 4098 4099 static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *used) 4100 { 4101 __be32 *p; 4102 int ret = 0; 4103 4104 *used = 0; 4105 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_USED - 1U))) 4106 return -EIO; 4107 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_USED)) { 4108 p = xdr_inline_decode(xdr, 8); 4109 if (unlikely(!p)) 4110 return -EIO; 4111 xdr_decode_hyper(p, used); 4112 bitmap[1] &= ~FATTR4_WORD1_SPACE_USED; 4113 ret = NFS_ATTR_FATTR_SPACE_USED; 4114 } 4115 dprintk("%s: space used=%Lu\n", __func__, 4116 (unsigned long long)*used); 4117 return ret; 4118 } 4119 4120 static __be32 * 4121 xdr_decode_nfstime4(__be32 *p, struct timespec64 *t) 4122 { 4123 __u64 sec; 4124 4125 p = xdr_decode_hyper(p, &sec); 4126 t-> tv_sec = sec; 4127 t->tv_nsec = be32_to_cpup(p++); 4128 return p; 4129 } 4130 4131 static int decode_attr_time(struct xdr_stream *xdr, struct timespec64 *time) 4132 { 4133 __be32 *p; 4134 4135 p = xdr_inline_decode(xdr, nfstime4_maxsz << 2); 4136 if (unlikely(!p)) 4137 return -EIO; 4138 xdr_decode_nfstime4(p, time); 4139 return 0; 4140 } 4141 4142 static int decode_attr_time_access(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec64 *time) 4143 { 4144 int status = 0; 4145 4146 time->tv_sec = 0; 4147 time->tv_nsec = 0; 4148 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_ACCESS - 1U))) 4149 return -EIO; 4150 if (likely(bitmap[1] & FATTR4_WORD1_TIME_ACCESS)) { 4151 status = decode_attr_time(xdr, time); 4152 if (status == 0) 4153 status = NFS_ATTR_FATTR_ATIME; 4154 bitmap[1] &= ~FATTR4_WORD1_TIME_ACCESS; 4155 } 4156 dprintk("%s: atime=%lld\n", __func__, time->tv_sec); 4157 return status; 4158 } 4159 4160 static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec64 *time) 4161 { 4162 int status = 0; 4163 4164 time->tv_sec = 0; 4165 time->tv_nsec = 0; 4166 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_METADATA - 1U))) 4167 return -EIO; 4168 if (likely(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) { 4169 status = decode_attr_time(xdr, time); 4170 if (status == 0) 4171 status = NFS_ATTR_FATTR_CTIME; 4172 bitmap[1] &= ~FATTR4_WORD1_TIME_METADATA; 4173 } 4174 dprintk("%s: ctime=%lld\n", __func__, time->tv_sec); 4175 return status; 4176 } 4177 4178 static int decode_attr_time_delta(struct xdr_stream *xdr, uint32_t *bitmap, 4179 struct timespec64 *time) 4180 { 4181 int status = 0; 4182 4183 time->tv_sec = 0; 4184 time->tv_nsec = 0; 4185 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_DELTA - 1U))) 4186 return -EIO; 4187 if (likely(bitmap[1] & FATTR4_WORD1_TIME_DELTA)) { 4188 status = decode_attr_time(xdr, time); 4189 bitmap[1] &= ~FATTR4_WORD1_TIME_DELTA; 4190 } 4191 dprintk("%s: time_delta=%lld %ld\n", __func__, time->tv_sec, 4192 time->tv_nsec); 4193 return status; 4194 } 4195 4196 static int decode_attr_security_label(struct xdr_stream *xdr, uint32_t *bitmap, 4197 struct nfs4_label *label) 4198 { 4199 uint32_t pi = 0; 4200 uint32_t lfs = 0; 4201 __u32 len; 4202 __be32 *p; 4203 int status = 0; 4204 4205 if (unlikely(bitmap[2] & (FATTR4_WORD2_SECURITY_LABEL - 1U))) 4206 return -EIO; 4207 if (likely(bitmap[2] & FATTR4_WORD2_SECURITY_LABEL)) { 4208 p = xdr_inline_decode(xdr, 4); 4209 if (unlikely(!p)) 4210 return -EIO; 4211 lfs = be32_to_cpup(p++); 4212 p = xdr_inline_decode(xdr, 4); 4213 if (unlikely(!p)) 4214 return -EIO; 4215 pi = be32_to_cpup(p++); 4216 p = xdr_inline_decode(xdr, 4); 4217 if (unlikely(!p)) 4218 return -EIO; 4219 len = be32_to_cpup(p++); 4220 p = xdr_inline_decode(xdr, len); 4221 if (unlikely(!p)) 4222 return -EIO; 4223 if (len < NFS4_MAXLABELLEN) { 4224 if (label) { 4225 if (label->len) { 4226 if (label->len < len) 4227 return -ERANGE; 4228 memcpy(label->label, p, len); 4229 } 4230 label->len = len; 4231 label->pi = pi; 4232 label->lfs = lfs; 4233 status = NFS_ATTR_FATTR_V4_SECURITY_LABEL; 4234 } 4235 bitmap[2] &= ~FATTR4_WORD2_SECURITY_LABEL; 4236 } else 4237 printk(KERN_WARNING "%s: label too long (%u)!\n", 4238 __func__, len); 4239 if (label && label->label) 4240 dprintk("%s: label=%.*s, len=%d, PI=%d, LFS=%d\n", 4241 __func__, label->len, (char *)label->label, 4242 label->len, label->pi, label->lfs); 4243 } 4244 return status; 4245 } 4246 4247 static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec64 *time) 4248 { 4249 int status = 0; 4250 4251 time->tv_sec = 0; 4252 time->tv_nsec = 0; 4253 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_MODIFY - 1U))) 4254 return -EIO; 4255 if (likely(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) { 4256 status = decode_attr_time(xdr, time); 4257 if (status == 0) 4258 status = NFS_ATTR_FATTR_MTIME; 4259 bitmap[1] &= ~FATTR4_WORD1_TIME_MODIFY; 4260 } 4261 dprintk("%s: mtime=%lld\n", __func__, time->tv_sec); 4262 return status; 4263 } 4264 4265 static int decode_attr_xattrsupport(struct xdr_stream *xdr, uint32_t *bitmap, 4266 uint32_t *res) 4267 { 4268 __be32 *p; 4269 4270 *res = 0; 4271 if (unlikely(bitmap[2] & (FATTR4_WORD2_XATTR_SUPPORT - 1U))) 4272 return -EIO; 4273 if (likely(bitmap[2] & FATTR4_WORD2_XATTR_SUPPORT)) { 4274 p = xdr_inline_decode(xdr, 4); 4275 if (unlikely(!p)) 4276 return -EIO; 4277 *res = be32_to_cpup(p); 4278 bitmap[2] &= ~FATTR4_WORD2_XATTR_SUPPORT; 4279 } 4280 dprintk("%s: XATTR support=%s\n", __func__, 4281 *res == 0 ? "false" : "true"); 4282 return 0; 4283 } 4284 4285 static int verify_attr_len(struct xdr_stream *xdr, unsigned int savep, uint32_t attrlen) 4286 { 4287 unsigned int attrwords = XDR_QUADLEN(attrlen); 4288 unsigned int nwords = (xdr_stream_pos(xdr) - savep) >> 2; 4289 4290 if (unlikely(attrwords != nwords)) { 4291 dprintk("%s: server returned incorrect attribute length: " 4292 "%u %c %u\n", 4293 __func__, 4294 attrwords << 2, 4295 (attrwords < nwords) ? '<' : '>', 4296 nwords << 2); 4297 return -EIO; 4298 } 4299 return 0; 4300 } 4301 4302 static int decode_change_info(struct xdr_stream *xdr, struct nfs4_change_info *cinfo) 4303 { 4304 __be32 *p; 4305 4306 p = xdr_inline_decode(xdr, 20); 4307 if (unlikely(!p)) 4308 return -EIO; 4309 cinfo->atomic = be32_to_cpup(p++); 4310 p = xdr_decode_hyper(p, &cinfo->before); 4311 xdr_decode_hyper(p, &cinfo->after); 4312 return 0; 4313 } 4314 4315 static int decode_access(struct xdr_stream *xdr, u32 *supported, u32 *access) 4316 { 4317 __be32 *p; 4318 uint32_t supp, acc; 4319 int status; 4320 4321 status = decode_op_hdr(xdr, OP_ACCESS); 4322 if (status) 4323 return status; 4324 p = xdr_inline_decode(xdr, 8); 4325 if (unlikely(!p)) 4326 return -EIO; 4327 supp = be32_to_cpup(p++); 4328 acc = be32_to_cpup(p); 4329 *supported = supp; 4330 *access = acc; 4331 return 0; 4332 } 4333 4334 static int decode_opaque_fixed(struct xdr_stream *xdr, void *buf, size_t len) 4335 { 4336 ssize_t ret = xdr_stream_decode_opaque_fixed(xdr, buf, len); 4337 if (unlikely(ret < 0)) 4338 return -EIO; 4339 return 0; 4340 } 4341 4342 static int decode_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid) 4343 { 4344 return decode_opaque_fixed(xdr, stateid, NFS4_STATEID_SIZE); 4345 } 4346 4347 static int decode_open_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid) 4348 { 4349 stateid->type = NFS4_OPEN_STATEID_TYPE; 4350 return decode_stateid(xdr, stateid); 4351 } 4352 4353 static int decode_lock_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid) 4354 { 4355 stateid->type = NFS4_LOCK_STATEID_TYPE; 4356 return decode_stateid(xdr, stateid); 4357 } 4358 4359 static int decode_delegation_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid) 4360 { 4361 stateid->type = NFS4_DELEGATION_STATEID_TYPE; 4362 return decode_stateid(xdr, stateid); 4363 } 4364 4365 static int decode_invalid_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid) 4366 { 4367 nfs4_stateid dummy; 4368 4369 nfs4_stateid_copy(stateid, &invalid_stateid); 4370 return decode_stateid(xdr, &dummy); 4371 } 4372 4373 static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res) 4374 { 4375 int status; 4376 4377 status = decode_op_hdr(xdr, OP_CLOSE); 4378 if (status != -EIO) 4379 nfs_increment_open_seqid(status, res->seqid); 4380 if (!status) 4381 status = decode_invalid_stateid(xdr, &res->stateid); 4382 return status; 4383 } 4384 4385 static int decode_verifier(struct xdr_stream *xdr, void *verifier) 4386 { 4387 return decode_opaque_fixed(xdr, verifier, NFS4_VERIFIER_SIZE); 4388 } 4389 4390 static int decode_write_verifier(struct xdr_stream *xdr, struct nfs_write_verifier *verifier) 4391 { 4392 return decode_opaque_fixed(xdr, verifier->data, NFS4_VERIFIER_SIZE); 4393 } 4394 4395 static int decode_commit(struct xdr_stream *xdr, struct nfs_commitres *res) 4396 { 4397 struct nfs_writeverf *verf = res->verf; 4398 int status; 4399 4400 status = decode_op_hdr(xdr, OP_COMMIT); 4401 if (!status) 4402 status = decode_write_verifier(xdr, &verf->verifier); 4403 if (!status) 4404 verf->committed = NFS_FILE_SYNC; 4405 return status; 4406 } 4407 4408 static int decode_create(struct xdr_stream *xdr, struct nfs4_change_info *cinfo) 4409 { 4410 __be32 *p; 4411 uint32_t bmlen; 4412 int status; 4413 4414 status = decode_op_hdr(xdr, OP_CREATE); 4415 if (status) 4416 return status; 4417 if ((status = decode_change_info(xdr, cinfo))) 4418 return status; 4419 p = xdr_inline_decode(xdr, 4); 4420 if (unlikely(!p)) 4421 return -EIO; 4422 bmlen = be32_to_cpup(p); 4423 p = xdr_inline_decode(xdr, bmlen << 2); 4424 if (likely(p)) 4425 return 0; 4426 return -EIO; 4427 } 4428 4429 static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_res *res) 4430 { 4431 unsigned int savep; 4432 uint32_t attrlen, bitmap[3] = {0}; 4433 int status; 4434 4435 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) 4436 goto xdr_error; 4437 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) 4438 goto xdr_error; 4439 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) 4440 goto xdr_error; 4441 if ((status = decode_attr_supported(xdr, bitmap, res->attr_bitmask)) != 0) 4442 goto xdr_error; 4443 if ((status = decode_attr_fh_expire_type(xdr, bitmap, 4444 &res->fh_expire_type)) != 0) 4445 goto xdr_error; 4446 if ((status = decode_attr_link_support(xdr, bitmap, &res->has_links)) != 0) 4447 goto xdr_error; 4448 if ((status = decode_attr_symlink_support(xdr, bitmap, &res->has_symlinks)) != 0) 4449 goto xdr_error; 4450 if ((status = decode_attr_aclsupport(xdr, bitmap, &res->acl_bitmask)) != 0) 4451 goto xdr_error; 4452 if ((status = decode_attr_case_insensitive(xdr, bitmap, &res->case_insensitive)) != 0) 4453 goto xdr_error; 4454 if ((status = decode_attr_case_preserving(xdr, bitmap, &res->case_preserving)) != 0) 4455 goto xdr_error; 4456 if ((status = decode_attr_exclcreat_supported(xdr, bitmap, 4457 res->exclcreat_bitmask)) != 0) 4458 goto xdr_error; 4459 status = verify_attr_len(xdr, savep, attrlen); 4460 xdr_error: 4461 dprintk("%s: xdr returned %d!\n", __func__, -status); 4462 return status; 4463 } 4464 4465 static int decode_statfs(struct xdr_stream *xdr, struct nfs_fsstat *fsstat) 4466 { 4467 unsigned int savep; 4468 uint32_t attrlen, bitmap[3] = {0}; 4469 int status; 4470 4471 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) 4472 goto xdr_error; 4473 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) 4474 goto xdr_error; 4475 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) 4476 goto xdr_error; 4477 4478 if ((status = decode_attr_files_avail(xdr, bitmap, &fsstat->afiles)) != 0) 4479 goto xdr_error; 4480 if ((status = decode_attr_files_free(xdr, bitmap, &fsstat->ffiles)) != 0) 4481 goto xdr_error; 4482 if ((status = decode_attr_files_total(xdr, bitmap, &fsstat->tfiles)) != 0) 4483 goto xdr_error; 4484 4485 status = -EIO; 4486 if (unlikely(bitmap[0])) 4487 goto xdr_error; 4488 4489 if ((status = decode_attr_space_avail(xdr, bitmap, &fsstat->abytes)) != 0) 4490 goto xdr_error; 4491 if ((status = decode_attr_space_free(xdr, bitmap, &fsstat->fbytes)) != 0) 4492 goto xdr_error; 4493 if ((status = decode_attr_space_total(xdr, bitmap, &fsstat->tbytes)) != 0) 4494 goto xdr_error; 4495 4496 status = verify_attr_len(xdr, savep, attrlen); 4497 xdr_error: 4498 dprintk("%s: xdr returned %d!\n", __func__, -status); 4499 return status; 4500 } 4501 4502 static int decode_pathconf(struct xdr_stream *xdr, struct nfs_pathconf *pathconf) 4503 { 4504 unsigned int savep; 4505 uint32_t attrlen, bitmap[3] = {0}; 4506 int status; 4507 4508 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) 4509 goto xdr_error; 4510 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) 4511 goto xdr_error; 4512 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) 4513 goto xdr_error; 4514 4515 if ((status = decode_attr_maxlink(xdr, bitmap, &pathconf->max_link)) != 0) 4516 goto xdr_error; 4517 if ((status = decode_attr_maxname(xdr, bitmap, &pathconf->max_namelen)) != 0) 4518 goto xdr_error; 4519 4520 status = verify_attr_len(xdr, savep, attrlen); 4521 xdr_error: 4522 dprintk("%s: xdr returned %d!\n", __func__, -status); 4523 return status; 4524 } 4525 4526 static int decode_threshold_hint(struct xdr_stream *xdr, 4527 uint32_t *bitmap, 4528 uint64_t *res, 4529 uint32_t hint_bit) 4530 { 4531 __be32 *p; 4532 4533 *res = 0; 4534 if (likely(bitmap[0] & hint_bit)) { 4535 p = xdr_inline_decode(xdr, 8); 4536 if (unlikely(!p)) 4537 return -EIO; 4538 xdr_decode_hyper(p, res); 4539 } 4540 return 0; 4541 } 4542 4543 static int decode_first_threshold_item4(struct xdr_stream *xdr, 4544 struct nfs4_threshold *res) 4545 { 4546 __be32 *p; 4547 unsigned int savep; 4548 uint32_t bitmap[3] = {0,}, attrlen; 4549 int status; 4550 4551 /* layout type */ 4552 p = xdr_inline_decode(xdr, 4); 4553 if (unlikely(!p)) 4554 return -EIO; 4555 res->l_type = be32_to_cpup(p); 4556 4557 /* thi_hintset bitmap */ 4558 status = decode_attr_bitmap(xdr, bitmap); 4559 if (status < 0) 4560 goto xdr_error; 4561 4562 /* thi_hintlist length */ 4563 status = decode_attr_length(xdr, &attrlen, &savep); 4564 if (status < 0) 4565 goto xdr_error; 4566 /* thi_hintlist */ 4567 status = decode_threshold_hint(xdr, bitmap, &res->rd_sz, THRESHOLD_RD); 4568 if (status < 0) 4569 goto xdr_error; 4570 status = decode_threshold_hint(xdr, bitmap, &res->wr_sz, THRESHOLD_WR); 4571 if (status < 0) 4572 goto xdr_error; 4573 status = decode_threshold_hint(xdr, bitmap, &res->rd_io_sz, 4574 THRESHOLD_RD_IO); 4575 if (status < 0) 4576 goto xdr_error; 4577 status = decode_threshold_hint(xdr, bitmap, &res->wr_io_sz, 4578 THRESHOLD_WR_IO); 4579 if (status < 0) 4580 goto xdr_error; 4581 4582 status = verify_attr_len(xdr, savep, attrlen); 4583 res->bm = bitmap[0]; 4584 4585 dprintk("%s bm=0x%x rd_sz=%llu wr_sz=%llu rd_io=%llu wr_io=%llu\n", 4586 __func__, res->bm, res->rd_sz, res->wr_sz, res->rd_io_sz, 4587 res->wr_io_sz); 4588 xdr_error: 4589 dprintk("%s ret=%d!\n", __func__, status); 4590 return status; 4591 } 4592 4593 /* 4594 * Thresholds on pNFS direct I/O vrs MDS I/O 4595 */ 4596 static int decode_attr_mdsthreshold(struct xdr_stream *xdr, 4597 uint32_t *bitmap, 4598 struct nfs4_threshold *res) 4599 { 4600 __be32 *p; 4601 int status = 0; 4602 uint32_t num; 4603 4604 if (unlikely(bitmap[2] & (FATTR4_WORD2_MDSTHRESHOLD - 1U))) 4605 return -EIO; 4606 if (bitmap[2] & FATTR4_WORD2_MDSTHRESHOLD) { 4607 /* Did the server return an unrequested attribute? */ 4608 if (unlikely(res == NULL)) 4609 return -EREMOTEIO; 4610 p = xdr_inline_decode(xdr, 4); 4611 if (unlikely(!p)) 4612 return -EIO; 4613 num = be32_to_cpup(p); 4614 if (num == 0) 4615 return 0; 4616 if (num > 1) 4617 printk(KERN_INFO "%s: Warning: Multiple pNFS layout " 4618 "drivers per filesystem not supported\n", 4619 __func__); 4620 4621 status = decode_first_threshold_item4(xdr, res); 4622 bitmap[2] &= ~FATTR4_WORD2_MDSTHRESHOLD; 4623 } 4624 return status; 4625 } 4626 4627 static int decode_getfattr_attrs(struct xdr_stream *xdr, uint32_t *bitmap, 4628 struct nfs_fattr *fattr, struct nfs_fh *fh, 4629 struct nfs4_fs_locations *fs_loc, const struct nfs_server *server) 4630 { 4631 int status; 4632 umode_t fmode = 0; 4633 uint32_t type; 4634 int32_t err; 4635 4636 status = decode_attr_type(xdr, bitmap, &type); 4637 if (status < 0) 4638 goto xdr_error; 4639 fattr->mode = 0; 4640 if (status != 0) { 4641 fattr->mode |= nfs_type2fmt[type]; 4642 fattr->valid |= status; 4643 } 4644 4645 status = decode_attr_change(xdr, bitmap, &fattr->change_attr); 4646 if (status < 0) 4647 goto xdr_error; 4648 fattr->valid |= status; 4649 4650 status = decode_attr_size(xdr, bitmap, &fattr->size); 4651 if (status < 0) 4652 goto xdr_error; 4653 fattr->valid |= status; 4654 4655 status = decode_attr_fsid(xdr, bitmap, &fattr->fsid); 4656 if (status < 0) 4657 goto xdr_error; 4658 fattr->valid |= status; 4659 4660 err = 0; 4661 status = decode_attr_error(xdr, bitmap, &err); 4662 if (status < 0) 4663 goto xdr_error; 4664 4665 status = decode_attr_filehandle(xdr, bitmap, fh); 4666 if (status < 0) 4667 goto xdr_error; 4668 4669 status = decode_attr_fileid(xdr, bitmap, &fattr->fileid); 4670 if (status < 0) 4671 goto xdr_error; 4672 fattr->valid |= status; 4673 4674 status = decode_attr_fs_locations(xdr, bitmap, fs_loc); 4675 if (status < 0) 4676 goto xdr_error; 4677 fattr->valid |= status; 4678 4679 status = -EIO; 4680 if (unlikely(bitmap[0])) 4681 goto xdr_error; 4682 4683 status = decode_attr_mode(xdr, bitmap, &fmode); 4684 if (status < 0) 4685 goto xdr_error; 4686 if (status != 0) { 4687 fattr->mode |= fmode; 4688 fattr->valid |= status; 4689 } 4690 4691 status = decode_attr_nlink(xdr, bitmap, &fattr->nlink); 4692 if (status < 0) 4693 goto xdr_error; 4694 fattr->valid |= status; 4695 4696 status = decode_attr_owner(xdr, bitmap, server, &fattr->uid, fattr->owner_name); 4697 if (status < 0) 4698 goto xdr_error; 4699 fattr->valid |= status; 4700 4701 status = decode_attr_group(xdr, bitmap, server, &fattr->gid, fattr->group_name); 4702 if (status < 0) 4703 goto xdr_error; 4704 fattr->valid |= status; 4705 4706 status = decode_attr_rdev(xdr, bitmap, &fattr->rdev); 4707 if (status < 0) 4708 goto xdr_error; 4709 fattr->valid |= status; 4710 4711 status = decode_attr_space_used(xdr, bitmap, &fattr->du.nfs3.used); 4712 if (status < 0) 4713 goto xdr_error; 4714 fattr->valid |= status; 4715 4716 status = decode_attr_time_access(xdr, bitmap, &fattr->atime); 4717 if (status < 0) 4718 goto xdr_error; 4719 fattr->valid |= status; 4720 4721 status = decode_attr_time_metadata(xdr, bitmap, &fattr->ctime); 4722 if (status < 0) 4723 goto xdr_error; 4724 fattr->valid |= status; 4725 4726 status = decode_attr_time_modify(xdr, bitmap, &fattr->mtime); 4727 if (status < 0) 4728 goto xdr_error; 4729 fattr->valid |= status; 4730 4731 status = decode_attr_mounted_on_fileid(xdr, bitmap, &fattr->mounted_on_fileid); 4732 if (status < 0) 4733 goto xdr_error; 4734 fattr->valid |= status; 4735 4736 status = -EIO; 4737 if (unlikely(bitmap[1])) 4738 goto xdr_error; 4739 4740 status = decode_attr_mdsthreshold(xdr, bitmap, fattr->mdsthreshold); 4741 if (status < 0) 4742 goto xdr_error; 4743 4744 if (fattr->label) { 4745 status = decode_attr_security_label(xdr, bitmap, fattr->label); 4746 if (status < 0) 4747 goto xdr_error; 4748 fattr->valid |= status; 4749 } 4750 4751 xdr_error: 4752 dprintk("%s: xdr returned %d\n", __func__, -status); 4753 return status; 4754 } 4755 4756 static int decode_getfattr_generic(struct xdr_stream *xdr, struct nfs_fattr *fattr, 4757 struct nfs_fh *fh, struct nfs4_fs_locations *fs_loc, 4758 const struct nfs_server *server) 4759 { 4760 unsigned int savep; 4761 uint32_t attrlen, 4762 bitmap[3] = {0}; 4763 int status; 4764 4765 status = decode_op_hdr(xdr, OP_GETATTR); 4766 if (status < 0) 4767 goto xdr_error; 4768 4769 status = decode_attr_bitmap(xdr, bitmap); 4770 if (status < 0) 4771 goto xdr_error; 4772 4773 status = decode_attr_length(xdr, &attrlen, &savep); 4774 if (status < 0) 4775 goto xdr_error; 4776 4777 status = decode_getfattr_attrs(xdr, bitmap, fattr, fh, fs_loc, server); 4778 if (status < 0) 4779 goto xdr_error; 4780 4781 status = verify_attr_len(xdr, savep, attrlen); 4782 xdr_error: 4783 dprintk("%s: xdr returned %d\n", __func__, -status); 4784 return status; 4785 } 4786 4787 static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr, 4788 const struct nfs_server *server) 4789 { 4790 return decode_getfattr_generic(xdr, fattr, NULL, NULL, server); 4791 } 4792 4793 /* 4794 * Decode potentially multiple layout types. 4795 */ 4796 static int decode_pnfs_layout_types(struct xdr_stream *xdr, 4797 struct nfs_fsinfo *fsinfo) 4798 { 4799 __be32 *p; 4800 uint32_t i; 4801 4802 p = xdr_inline_decode(xdr, 4); 4803 if (unlikely(!p)) 4804 return -EIO; 4805 fsinfo->nlayouttypes = be32_to_cpup(p); 4806 4807 /* pNFS is not supported by the underlying file system */ 4808 if (fsinfo->nlayouttypes == 0) 4809 return 0; 4810 4811 /* Decode and set first layout type, move xdr->p past unused types */ 4812 p = xdr_inline_decode(xdr, fsinfo->nlayouttypes * 4); 4813 if (unlikely(!p)) 4814 return -EIO; 4815 4816 /* If we get too many, then just cap it at the max */ 4817 if (fsinfo->nlayouttypes > NFS_MAX_LAYOUT_TYPES) { 4818 printk(KERN_INFO "NFS: %s: Warning: Too many (%u) pNFS layout types\n", 4819 __func__, fsinfo->nlayouttypes); 4820 fsinfo->nlayouttypes = NFS_MAX_LAYOUT_TYPES; 4821 } 4822 4823 for(i = 0; i < fsinfo->nlayouttypes; ++i) 4824 fsinfo->layouttype[i] = be32_to_cpup(p++); 4825 return 0; 4826 } 4827 4828 /* 4829 * The type of file system exported. 4830 * Note we must ensure that layouttype is set in any non-error case. 4831 */ 4832 static int decode_attr_pnfstype(struct xdr_stream *xdr, uint32_t *bitmap, 4833 struct nfs_fsinfo *fsinfo) 4834 { 4835 int status = 0; 4836 4837 dprintk("%s: bitmap is %x\n", __func__, bitmap[1]); 4838 if (unlikely(bitmap[1] & (FATTR4_WORD1_FS_LAYOUT_TYPES - 1U))) 4839 return -EIO; 4840 if (bitmap[1] & FATTR4_WORD1_FS_LAYOUT_TYPES) { 4841 status = decode_pnfs_layout_types(xdr, fsinfo); 4842 bitmap[1] &= ~FATTR4_WORD1_FS_LAYOUT_TYPES; 4843 } 4844 return status; 4845 } 4846 4847 /* 4848 * The prefered block size for layout directed io 4849 */ 4850 static int decode_attr_layout_blksize(struct xdr_stream *xdr, uint32_t *bitmap, 4851 uint32_t *res) 4852 { 4853 __be32 *p; 4854 4855 dprintk("%s: bitmap is %x\n", __func__, bitmap[2]); 4856 *res = 0; 4857 if (bitmap[2] & FATTR4_WORD2_LAYOUT_BLKSIZE) { 4858 p = xdr_inline_decode(xdr, 4); 4859 if (unlikely(!p)) 4860 return -EIO; 4861 *res = be32_to_cpup(p); 4862 bitmap[2] &= ~FATTR4_WORD2_LAYOUT_BLKSIZE; 4863 } 4864 return 0; 4865 } 4866 4867 /* 4868 * The granularity of a CLONE operation. 4869 */ 4870 static int decode_attr_clone_blksize(struct xdr_stream *xdr, uint32_t *bitmap, 4871 uint32_t *res) 4872 { 4873 __be32 *p; 4874 4875 dprintk("%s: bitmap is %x\n", __func__, bitmap[2]); 4876 *res = 0; 4877 if (bitmap[2] & FATTR4_WORD2_CLONE_BLKSIZE) { 4878 p = xdr_inline_decode(xdr, 4); 4879 if (unlikely(!p)) 4880 return -EIO; 4881 *res = be32_to_cpup(p); 4882 bitmap[2] &= ~FATTR4_WORD2_CLONE_BLKSIZE; 4883 } 4884 return 0; 4885 } 4886 4887 static int decode_attr_change_attr_type(struct xdr_stream *xdr, 4888 uint32_t *bitmap, 4889 enum nfs4_change_attr_type *res) 4890 { 4891 u32 tmp = NFS4_CHANGE_TYPE_IS_UNDEFINED; 4892 4893 dprintk("%s: bitmap is %x\n", __func__, bitmap[2]); 4894 if (bitmap[2] & FATTR4_WORD2_CHANGE_ATTR_TYPE) { 4895 if (xdr_stream_decode_u32(xdr, &tmp)) 4896 return -EIO; 4897 bitmap[2] &= ~FATTR4_WORD2_CHANGE_ATTR_TYPE; 4898 } 4899 4900 switch(tmp) { 4901 case NFS4_CHANGE_TYPE_IS_MONOTONIC_INCR: 4902 case NFS4_CHANGE_TYPE_IS_VERSION_COUNTER: 4903 case NFS4_CHANGE_TYPE_IS_VERSION_COUNTER_NOPNFS: 4904 case NFS4_CHANGE_TYPE_IS_TIME_METADATA: 4905 *res = tmp; 4906 break; 4907 default: 4908 *res = NFS4_CHANGE_TYPE_IS_UNDEFINED; 4909 } 4910 return 0; 4911 } 4912 4913 static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo) 4914 { 4915 unsigned int savep; 4916 uint32_t attrlen, bitmap[3]; 4917 int status; 4918 4919 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) 4920 goto xdr_error; 4921 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) 4922 goto xdr_error; 4923 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) 4924 goto xdr_error; 4925 4926 fsinfo->rtmult = fsinfo->wtmult = 512; /* ??? */ 4927 4928 if ((status = decode_attr_lease_time(xdr, bitmap, &fsinfo->lease_time)) != 0) 4929 goto xdr_error; 4930 if ((status = decode_attr_maxfilesize(xdr, bitmap, &fsinfo->maxfilesize)) != 0) 4931 goto xdr_error; 4932 if ((status = decode_attr_maxread(xdr, bitmap, &fsinfo->rtmax)) != 0) 4933 goto xdr_error; 4934 fsinfo->rtpref = fsinfo->dtpref = fsinfo->rtmax; 4935 if ((status = decode_attr_maxwrite(xdr, bitmap, &fsinfo->wtmax)) != 0) 4936 goto xdr_error; 4937 fsinfo->wtpref = fsinfo->wtmax; 4938 4939 status = -EIO; 4940 if (unlikely(bitmap[0])) 4941 goto xdr_error; 4942 4943 status = decode_attr_time_delta(xdr, bitmap, &fsinfo->time_delta); 4944 if (status != 0) 4945 goto xdr_error; 4946 status = decode_attr_pnfstype(xdr, bitmap, fsinfo); 4947 if (status != 0) 4948 goto xdr_error; 4949 4950 status = -EIO; 4951 if (unlikely(bitmap[1])) 4952 goto xdr_error; 4953 4954 status = decode_attr_layout_blksize(xdr, bitmap, &fsinfo->blksize); 4955 if (status) 4956 goto xdr_error; 4957 status = decode_attr_clone_blksize(xdr, bitmap, &fsinfo->clone_blksize); 4958 if (status) 4959 goto xdr_error; 4960 4961 status = decode_attr_change_attr_type(xdr, bitmap, 4962 &fsinfo->change_attr_type); 4963 if (status) 4964 goto xdr_error; 4965 4966 status = decode_attr_xattrsupport(xdr, bitmap, 4967 &fsinfo->xattr_support); 4968 if (status) 4969 goto xdr_error; 4970 4971 status = verify_attr_len(xdr, savep, attrlen); 4972 xdr_error: 4973 dprintk("%s: xdr returned %d!\n", __func__, -status); 4974 return status; 4975 } 4976 4977 static int decode_getfh(struct xdr_stream *xdr, struct nfs_fh *fh) 4978 { 4979 __be32 *p; 4980 uint32_t len; 4981 int status; 4982 4983 /* Zero handle first to allow comparisons */ 4984 memset(fh, 0, sizeof(*fh)); 4985 4986 status = decode_op_hdr(xdr, OP_GETFH); 4987 if (status) 4988 return status; 4989 4990 p = xdr_inline_decode(xdr, 4); 4991 if (unlikely(!p)) 4992 return -EIO; 4993 len = be32_to_cpup(p); 4994 if (len > NFS4_FHSIZE || len == 0) { 4995 trace_nfs4_xdr_bad_filehandle(xdr, OP_GETFH, NFS4ERR_BADHANDLE); 4996 return -EREMOTEIO; 4997 } 4998 fh->size = len; 4999 p = xdr_inline_decode(xdr, len); 5000 if (unlikely(!p)) 5001 return -EIO; 5002 memcpy(fh->data, p, len); 5003 return 0; 5004 } 5005 5006 static int decode_link(struct xdr_stream *xdr, struct nfs4_change_info *cinfo) 5007 { 5008 int status; 5009 5010 status = decode_op_hdr(xdr, OP_LINK); 5011 if (status) 5012 return status; 5013 return decode_change_info(xdr, cinfo); 5014 } 5015 5016 /* 5017 * We create the owner, so we know a proper owner.id length is 4. 5018 */ 5019 static int decode_lock_denied (struct xdr_stream *xdr, struct file_lock *fl) 5020 { 5021 uint64_t offset, length, clientid; 5022 __be32 *p; 5023 uint32_t namelen, type; 5024 5025 p = xdr_inline_decode(xdr, 32); /* read 32 bytes */ 5026 if (unlikely(!p)) 5027 return -EIO; 5028 p = xdr_decode_hyper(p, &offset); /* read 2 8-byte long words */ 5029 p = xdr_decode_hyper(p, &length); 5030 type = be32_to_cpup(p++); /* 4 byte read */ 5031 if (fl != NULL) { /* manipulate file lock */ 5032 fl->fl_start = (loff_t)offset; 5033 fl->fl_end = fl->fl_start + (loff_t)length - 1; 5034 if (length == ~(uint64_t)0) 5035 fl->fl_end = OFFSET_MAX; 5036 fl->fl_type = F_WRLCK; 5037 if (type & 1) 5038 fl->fl_type = F_RDLCK; 5039 fl->fl_pid = 0; 5040 } 5041 p = xdr_decode_hyper(p, &clientid); /* read 8 bytes */ 5042 namelen = be32_to_cpup(p); /* read 4 bytes */ /* have read all 32 bytes now */ 5043 p = xdr_inline_decode(xdr, namelen); /* variable size field */ 5044 if (likely(!p)) 5045 return -EIO; 5046 return -NFS4ERR_DENIED; 5047 } 5048 5049 static int decode_lock(struct xdr_stream *xdr, struct nfs_lock_res *res) 5050 { 5051 int status; 5052 5053 status = decode_op_hdr(xdr, OP_LOCK); 5054 if (status == -EIO) 5055 goto out; 5056 if (status == 0) { 5057 status = decode_lock_stateid(xdr, &res->stateid); 5058 if (unlikely(status)) 5059 goto out; 5060 } else if (status == -NFS4ERR_DENIED) 5061 status = decode_lock_denied(xdr, NULL); 5062 if (res->open_seqid != NULL) 5063 nfs_increment_open_seqid(status, res->open_seqid); 5064 nfs_increment_lock_seqid(status, res->lock_seqid); 5065 out: 5066 return status; 5067 } 5068 5069 static int decode_lockt(struct xdr_stream *xdr, struct nfs_lockt_res *res) 5070 { 5071 int status; 5072 status = decode_op_hdr(xdr, OP_LOCKT); 5073 if (status == -NFS4ERR_DENIED) 5074 return decode_lock_denied(xdr, res->denied); 5075 return status; 5076 } 5077 5078 static int decode_locku(struct xdr_stream *xdr, struct nfs_locku_res *res) 5079 { 5080 int status; 5081 5082 status = decode_op_hdr(xdr, OP_LOCKU); 5083 if (status != -EIO) 5084 nfs_increment_lock_seqid(status, res->seqid); 5085 if (status == 0) 5086 status = decode_lock_stateid(xdr, &res->stateid); 5087 return status; 5088 } 5089 5090 static int decode_release_lockowner(struct xdr_stream *xdr) 5091 { 5092 return decode_op_hdr(xdr, OP_RELEASE_LOCKOWNER); 5093 } 5094 5095 static int decode_lookup(struct xdr_stream *xdr) 5096 { 5097 return decode_op_hdr(xdr, OP_LOOKUP); 5098 } 5099 5100 static int decode_lookupp(struct xdr_stream *xdr) 5101 { 5102 return decode_op_hdr(xdr, OP_LOOKUPP); 5103 } 5104 5105 /* This is too sick! */ 5106 static int decode_space_limit(struct xdr_stream *xdr, 5107 unsigned long *pagemod_limit) 5108 { 5109 __be32 *p; 5110 uint32_t limit_type, nblocks, blocksize; 5111 u64 maxsize = 0; 5112 5113 p = xdr_inline_decode(xdr, 12); 5114 if (unlikely(!p)) 5115 return -EIO; 5116 limit_type = be32_to_cpup(p++); 5117 switch (limit_type) { 5118 case NFS4_LIMIT_SIZE: 5119 xdr_decode_hyper(p, &maxsize); 5120 break; 5121 case NFS4_LIMIT_BLOCKS: 5122 nblocks = be32_to_cpup(p++); 5123 blocksize = be32_to_cpup(p); 5124 maxsize = (uint64_t)nblocks * (uint64_t)blocksize; 5125 } 5126 maxsize >>= PAGE_SHIFT; 5127 *pagemod_limit = min_t(u64, maxsize, ULONG_MAX); 5128 return 0; 5129 } 5130 5131 static int decode_rw_delegation(struct xdr_stream *xdr, 5132 uint32_t delegation_type, 5133 struct nfs_openres *res) 5134 { 5135 __be32 *p; 5136 int status; 5137 5138 status = decode_delegation_stateid(xdr, &res->delegation); 5139 if (unlikely(status)) 5140 return status; 5141 p = xdr_inline_decode(xdr, 4); 5142 if (unlikely(!p)) 5143 return -EIO; 5144 res->do_recall = be32_to_cpup(p); 5145 5146 switch (delegation_type) { 5147 case NFS4_OPEN_DELEGATE_READ: 5148 res->delegation_type = FMODE_READ; 5149 break; 5150 case NFS4_OPEN_DELEGATE_WRITE: 5151 res->delegation_type = FMODE_WRITE|FMODE_READ; 5152 if (decode_space_limit(xdr, &res->pagemod_limit) < 0) 5153 return -EIO; 5154 } 5155 return decode_ace(xdr, NULL); 5156 } 5157 5158 static int decode_no_delegation(struct xdr_stream *xdr, struct nfs_openres *res) 5159 { 5160 __be32 *p; 5161 uint32_t why_no_delegation; 5162 5163 p = xdr_inline_decode(xdr, 4); 5164 if (unlikely(!p)) 5165 return -EIO; 5166 why_no_delegation = be32_to_cpup(p); 5167 switch (why_no_delegation) { 5168 case WND4_CONTENTION: 5169 case WND4_RESOURCE: 5170 xdr_inline_decode(xdr, 4); 5171 /* Ignore for now */ 5172 } 5173 return 0; 5174 } 5175 5176 static int decode_delegation(struct xdr_stream *xdr, struct nfs_openres *res) 5177 { 5178 __be32 *p; 5179 uint32_t delegation_type; 5180 5181 p = xdr_inline_decode(xdr, 4); 5182 if (unlikely(!p)) 5183 return -EIO; 5184 delegation_type = be32_to_cpup(p); 5185 res->delegation_type = 0; 5186 switch (delegation_type) { 5187 case NFS4_OPEN_DELEGATE_NONE: 5188 return 0; 5189 case NFS4_OPEN_DELEGATE_READ: 5190 case NFS4_OPEN_DELEGATE_WRITE: 5191 return decode_rw_delegation(xdr, delegation_type, res); 5192 case NFS4_OPEN_DELEGATE_NONE_EXT: 5193 return decode_no_delegation(xdr, res); 5194 } 5195 return -EIO; 5196 } 5197 5198 static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res) 5199 { 5200 __be32 *p; 5201 uint32_t savewords, bmlen, i; 5202 int status; 5203 5204 if (!__decode_op_hdr(xdr, OP_OPEN, &status)) 5205 return status; 5206 nfs_increment_open_seqid(status, res->seqid); 5207 if (status) 5208 return status; 5209 status = decode_open_stateid(xdr, &res->stateid); 5210 if (unlikely(status)) 5211 return status; 5212 5213 decode_change_info(xdr, &res->cinfo); 5214 5215 p = xdr_inline_decode(xdr, 8); 5216 if (unlikely(!p)) 5217 return -EIO; 5218 res->rflags = be32_to_cpup(p++); 5219 bmlen = be32_to_cpup(p); 5220 if (bmlen > 10) 5221 goto xdr_error; 5222 5223 p = xdr_inline_decode(xdr, bmlen << 2); 5224 if (unlikely(!p)) 5225 return -EIO; 5226 savewords = min_t(uint32_t, bmlen, NFS4_BITMAP_SIZE); 5227 for (i = 0; i < savewords; ++i) 5228 res->attrset[i] = be32_to_cpup(p++); 5229 for (; i < NFS4_BITMAP_SIZE; i++) 5230 res->attrset[i] = 0; 5231 5232 return decode_delegation(xdr, res); 5233 xdr_error: 5234 dprintk("%s: Bitmap too large! Length = %u\n", __func__, bmlen); 5235 return -EIO; 5236 } 5237 5238 static int decode_open_confirm(struct xdr_stream *xdr, struct nfs_open_confirmres *res) 5239 { 5240 int status; 5241 5242 status = decode_op_hdr(xdr, OP_OPEN_CONFIRM); 5243 if (status != -EIO) 5244 nfs_increment_open_seqid(status, res->seqid); 5245 if (!status) 5246 status = decode_open_stateid(xdr, &res->stateid); 5247 return status; 5248 } 5249 5250 static int decode_open_downgrade(struct xdr_stream *xdr, struct nfs_closeres *res) 5251 { 5252 int status; 5253 5254 status = decode_op_hdr(xdr, OP_OPEN_DOWNGRADE); 5255 if (status != -EIO) 5256 nfs_increment_open_seqid(status, res->seqid); 5257 if (!status) 5258 status = decode_open_stateid(xdr, &res->stateid); 5259 return status; 5260 } 5261 5262 static int decode_putfh(struct xdr_stream *xdr) 5263 { 5264 return decode_op_hdr(xdr, OP_PUTFH); 5265 } 5266 5267 static int decode_putrootfh(struct xdr_stream *xdr) 5268 { 5269 return decode_op_hdr(xdr, OP_PUTROOTFH); 5270 } 5271 5272 static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req, 5273 struct nfs_pgio_res *res) 5274 { 5275 __be32 *p; 5276 uint32_t count, eof, recvd; 5277 int status; 5278 5279 status = decode_op_hdr(xdr, OP_READ); 5280 if (status) 5281 return status; 5282 p = xdr_inline_decode(xdr, 8); 5283 if (unlikely(!p)) 5284 return -EIO; 5285 eof = be32_to_cpup(p++); 5286 count = be32_to_cpup(p); 5287 recvd = xdr_read_pages(xdr, count); 5288 if (count > recvd) { 5289 dprintk("NFS: server cheating in read reply: " 5290 "count %u > recvd %u\n", count, recvd); 5291 count = recvd; 5292 eof = 0; 5293 } 5294 res->eof = eof; 5295 res->count = count; 5296 return 0; 5297 } 5298 5299 static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs4_readdir_res *readdir) 5300 { 5301 int status; 5302 __be32 verf[2]; 5303 5304 status = decode_op_hdr(xdr, OP_READDIR); 5305 if (!status) 5306 status = decode_verifier(xdr, readdir->verifier.data); 5307 if (unlikely(status)) 5308 return status; 5309 memcpy(verf, readdir->verifier.data, sizeof(verf)); 5310 dprintk("%s: verifier = %08x:%08x\n", 5311 __func__, verf[0], verf[1]); 5312 return xdr_read_pages(xdr, xdr->buf->page_len); 5313 } 5314 5315 static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req) 5316 { 5317 struct xdr_buf *rcvbuf = &req->rq_rcv_buf; 5318 u32 len, recvd; 5319 __be32 *p; 5320 int status; 5321 5322 status = decode_op_hdr(xdr, OP_READLINK); 5323 if (status) 5324 return status; 5325 5326 /* Convert length of symlink */ 5327 p = xdr_inline_decode(xdr, 4); 5328 if (unlikely(!p)) 5329 return -EIO; 5330 len = be32_to_cpup(p); 5331 if (len >= rcvbuf->page_len || len <= 0) { 5332 dprintk("nfs: server returned giant symlink!\n"); 5333 return -ENAMETOOLONG; 5334 } 5335 recvd = xdr_read_pages(xdr, len); 5336 if (recvd < len) { 5337 dprintk("NFS: server cheating in readlink reply: " 5338 "count %u > recvd %u\n", len, recvd); 5339 return -EIO; 5340 } 5341 /* 5342 * The XDR encode routine has set things up so that 5343 * the link text will be copied directly into the 5344 * buffer. We just have to do overflow-checking, 5345 * and null-terminate the text (the VFS expects 5346 * null-termination). 5347 */ 5348 xdr_terminate_string(rcvbuf, len); 5349 return 0; 5350 } 5351 5352 static int decode_remove(struct xdr_stream *xdr, struct nfs4_change_info *cinfo) 5353 { 5354 int status; 5355 5356 status = decode_op_hdr(xdr, OP_REMOVE); 5357 if (status) 5358 goto out; 5359 status = decode_change_info(xdr, cinfo); 5360 out: 5361 return status; 5362 } 5363 5364 static int decode_rename(struct xdr_stream *xdr, struct nfs4_change_info *old_cinfo, 5365 struct nfs4_change_info *new_cinfo) 5366 { 5367 int status; 5368 5369 status = decode_op_hdr(xdr, OP_RENAME); 5370 if (status) 5371 goto out; 5372 if ((status = decode_change_info(xdr, old_cinfo))) 5373 goto out; 5374 status = decode_change_info(xdr, new_cinfo); 5375 out: 5376 return status; 5377 } 5378 5379 static int decode_renew(struct xdr_stream *xdr) 5380 { 5381 return decode_op_hdr(xdr, OP_RENEW); 5382 } 5383 5384 static int 5385 decode_restorefh(struct xdr_stream *xdr) 5386 { 5387 return decode_op_hdr(xdr, OP_RESTOREFH); 5388 } 5389 5390 static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req, 5391 struct nfs_getaclres *res) 5392 { 5393 unsigned int savep; 5394 uint32_t attrlen, 5395 bitmap[3] = {0}; 5396 int status; 5397 5398 res->acl_len = 0; 5399 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) 5400 goto out; 5401 5402 xdr_enter_page(xdr, xdr->buf->page_len); 5403 5404 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) 5405 goto out; 5406 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) 5407 goto out; 5408 5409 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACL - 1U))) 5410 return -EIO; 5411 if (likely(bitmap[0] & FATTR4_WORD0_ACL)) { 5412 5413 /* The bitmap (xdr len + bitmaps) and the attr xdr len words 5414 * are stored with the acl data to handle the problem of 5415 * variable length bitmaps.*/ 5416 res->acl_data_offset = xdr_page_pos(xdr); 5417 res->acl_len = attrlen; 5418 5419 /* Check for receive buffer overflow */ 5420 if (res->acl_len > xdr_stream_remaining(xdr) || 5421 res->acl_len + res->acl_data_offset > xdr->buf->page_len) { 5422 res->acl_flags |= NFS4_ACL_TRUNC; 5423 dprintk("NFS: acl reply: attrlen %u > page_len %zu\n", 5424 attrlen, xdr_stream_remaining(xdr)); 5425 } 5426 } else 5427 status = -EOPNOTSUPP; 5428 5429 out: 5430 return status; 5431 } 5432 5433 static int 5434 decode_savefh(struct xdr_stream *xdr) 5435 { 5436 return decode_op_hdr(xdr, OP_SAVEFH); 5437 } 5438 5439 static int decode_setattr(struct xdr_stream *xdr) 5440 { 5441 int status; 5442 5443 status = decode_op_hdr(xdr, OP_SETATTR); 5444 if (status) 5445 return status; 5446 if (decode_bitmap4(xdr, NULL, 0) >= 0) 5447 return 0; 5448 return -EIO; 5449 } 5450 5451 static int decode_setclientid(struct xdr_stream *xdr, struct nfs4_setclientid_res *res) 5452 { 5453 __be32 *p; 5454 uint32_t opnum; 5455 int32_t nfserr; 5456 5457 p = xdr_inline_decode(xdr, 8); 5458 if (unlikely(!p)) 5459 return -EIO; 5460 opnum = be32_to_cpup(p++); 5461 if (opnum != OP_SETCLIENTID) { 5462 dprintk("nfs: decode_setclientid: Server returned operation" 5463 " %d\n", opnum); 5464 return -EIO; 5465 } 5466 nfserr = be32_to_cpup(p); 5467 if (nfserr == NFS_OK) { 5468 p = xdr_inline_decode(xdr, 8 + NFS4_VERIFIER_SIZE); 5469 if (unlikely(!p)) 5470 return -EIO; 5471 p = xdr_decode_hyper(p, &res->clientid); 5472 memcpy(res->confirm.data, p, NFS4_VERIFIER_SIZE); 5473 } else if (nfserr == NFSERR_CLID_INUSE) { 5474 uint32_t len; 5475 5476 /* skip netid string */ 5477 p = xdr_inline_decode(xdr, 4); 5478 if (unlikely(!p)) 5479 return -EIO; 5480 len = be32_to_cpup(p); 5481 p = xdr_inline_decode(xdr, len); 5482 if (unlikely(!p)) 5483 return -EIO; 5484 5485 /* skip uaddr string */ 5486 p = xdr_inline_decode(xdr, 4); 5487 if (unlikely(!p)) 5488 return -EIO; 5489 len = be32_to_cpup(p); 5490 p = xdr_inline_decode(xdr, len); 5491 if (unlikely(!p)) 5492 return -EIO; 5493 return -NFSERR_CLID_INUSE; 5494 } else 5495 return nfs4_stat_to_errno(nfserr); 5496 5497 return 0; 5498 } 5499 5500 static int decode_setclientid_confirm(struct xdr_stream *xdr) 5501 { 5502 return decode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM); 5503 } 5504 5505 static int decode_write(struct xdr_stream *xdr, struct nfs_pgio_res *res) 5506 { 5507 __be32 *p; 5508 int status; 5509 5510 status = decode_op_hdr(xdr, OP_WRITE); 5511 if (status) 5512 return status; 5513 5514 p = xdr_inline_decode(xdr, 8); 5515 if (unlikely(!p)) 5516 return -EIO; 5517 res->count = be32_to_cpup(p++); 5518 res->verf->committed = be32_to_cpup(p++); 5519 return decode_write_verifier(xdr, &res->verf->verifier); 5520 } 5521 5522 static int decode_delegreturn(struct xdr_stream *xdr) 5523 { 5524 return decode_op_hdr(xdr, OP_DELEGRETURN); 5525 } 5526 5527 static int decode_secinfo_gss(struct xdr_stream *xdr, 5528 struct nfs4_secinfo4 *flavor) 5529 { 5530 u32 oid_len; 5531 __be32 *p; 5532 5533 p = xdr_inline_decode(xdr, 4); 5534 if (unlikely(!p)) 5535 return -EIO; 5536 oid_len = be32_to_cpup(p); 5537 if (oid_len > GSS_OID_MAX_LEN) 5538 return -EINVAL; 5539 5540 p = xdr_inline_decode(xdr, oid_len); 5541 if (unlikely(!p)) 5542 return -EIO; 5543 memcpy(flavor->flavor_info.oid.data, p, oid_len); 5544 flavor->flavor_info.oid.len = oid_len; 5545 5546 p = xdr_inline_decode(xdr, 8); 5547 if (unlikely(!p)) 5548 return -EIO; 5549 flavor->flavor_info.qop = be32_to_cpup(p++); 5550 flavor->flavor_info.service = be32_to_cpup(p); 5551 5552 return 0; 5553 } 5554 5555 static int decode_secinfo_common(struct xdr_stream *xdr, struct nfs4_secinfo_res *res) 5556 { 5557 struct nfs4_secinfo4 *sec_flavor; 5558 unsigned int i, num_flavors; 5559 int status; 5560 __be32 *p; 5561 5562 p = xdr_inline_decode(xdr, 4); 5563 if (unlikely(!p)) 5564 return -EIO; 5565 5566 res->flavors->num_flavors = 0; 5567 num_flavors = be32_to_cpup(p); 5568 5569 for (i = 0; i < num_flavors; i++) { 5570 sec_flavor = &res->flavors->flavors[i]; 5571 if ((char *)&sec_flavor[1] - (char *)res->flavors > PAGE_SIZE) 5572 break; 5573 5574 p = xdr_inline_decode(xdr, 4); 5575 if (unlikely(!p)) 5576 return -EIO; 5577 sec_flavor->flavor = be32_to_cpup(p); 5578 5579 if (sec_flavor->flavor == RPC_AUTH_GSS) { 5580 status = decode_secinfo_gss(xdr, sec_flavor); 5581 if (status) 5582 goto out; 5583 } 5584 res->flavors->num_flavors++; 5585 } 5586 5587 status = 0; 5588 out: 5589 return status; 5590 } 5591 5592 static int decode_secinfo(struct xdr_stream *xdr, struct nfs4_secinfo_res *res) 5593 { 5594 int status = decode_op_hdr(xdr, OP_SECINFO); 5595 if (status) 5596 return status; 5597 return decode_secinfo_common(xdr, res); 5598 } 5599 5600 #if defined(CONFIG_NFS_V4_1) 5601 static int decode_secinfo_no_name(struct xdr_stream *xdr, struct nfs4_secinfo_res *res) 5602 { 5603 int status = decode_op_hdr(xdr, OP_SECINFO_NO_NAME); 5604 if (status) 5605 return status; 5606 return decode_secinfo_common(xdr, res); 5607 } 5608 5609 static int decode_op_map(struct xdr_stream *xdr, struct nfs4_op_map *op_map) 5610 { 5611 if (xdr_stream_decode_uint32_array(xdr, op_map->u.words, 5612 ARRAY_SIZE(op_map->u.words)) < 0) 5613 return -EIO; 5614 return 0; 5615 } 5616 5617 static int decode_exchange_id(struct xdr_stream *xdr, 5618 struct nfs41_exchange_id_res *res) 5619 { 5620 __be32 *p; 5621 uint32_t dummy; 5622 char *dummy_str; 5623 int status; 5624 uint32_t impl_id_count; 5625 5626 status = decode_op_hdr(xdr, OP_EXCHANGE_ID); 5627 if (status) 5628 return status; 5629 5630 p = xdr_inline_decode(xdr, 8); 5631 if (unlikely(!p)) 5632 return -EIO; 5633 xdr_decode_hyper(p, &res->clientid); 5634 p = xdr_inline_decode(xdr, 12); 5635 if (unlikely(!p)) 5636 return -EIO; 5637 res->seqid = be32_to_cpup(p++); 5638 res->flags = be32_to_cpup(p++); 5639 5640 res->state_protect.how = be32_to_cpup(p); 5641 switch (res->state_protect.how) { 5642 case SP4_NONE: 5643 break; 5644 case SP4_MACH_CRED: 5645 status = decode_op_map(xdr, &res->state_protect.enforce); 5646 if (status) 5647 return status; 5648 status = decode_op_map(xdr, &res->state_protect.allow); 5649 if (status) 5650 return status; 5651 break; 5652 default: 5653 WARN_ON_ONCE(1); 5654 return -EIO; 5655 } 5656 5657 /* server_owner4.so_minor_id */ 5658 p = xdr_inline_decode(xdr, 8); 5659 if (unlikely(!p)) 5660 return -EIO; 5661 p = xdr_decode_hyper(p, &res->server_owner->minor_id); 5662 5663 /* server_owner4.so_major_id */ 5664 status = decode_opaque_inline(xdr, &dummy, &dummy_str); 5665 if (unlikely(status)) 5666 return status; 5667 memcpy(res->server_owner->major_id, dummy_str, dummy); 5668 res->server_owner->major_id_sz = dummy; 5669 5670 /* server_scope4 */ 5671 status = decode_opaque_inline(xdr, &dummy, &dummy_str); 5672 if (unlikely(status)) 5673 return status; 5674 memcpy(res->server_scope->server_scope, dummy_str, dummy); 5675 res->server_scope->server_scope_sz = dummy; 5676 5677 /* Implementation Id */ 5678 p = xdr_inline_decode(xdr, 4); 5679 if (unlikely(!p)) 5680 return -EIO; 5681 impl_id_count = be32_to_cpup(p++); 5682 5683 if (impl_id_count) { 5684 /* nii_domain */ 5685 status = decode_opaque_inline(xdr, &dummy, &dummy_str); 5686 if (unlikely(status)) 5687 return status; 5688 memcpy(res->impl_id->domain, dummy_str, dummy); 5689 5690 /* nii_name */ 5691 status = decode_opaque_inline(xdr, &dummy, &dummy_str); 5692 if (unlikely(status)) 5693 return status; 5694 memcpy(res->impl_id->name, dummy_str, dummy); 5695 5696 /* nii_date */ 5697 p = xdr_inline_decode(xdr, 12); 5698 if (unlikely(!p)) 5699 return -EIO; 5700 p = xdr_decode_hyper(p, &res->impl_id->date.seconds); 5701 res->impl_id->date.nseconds = be32_to_cpup(p); 5702 5703 /* if there's more than one entry, ignore the rest */ 5704 } 5705 return 0; 5706 } 5707 5708 static int decode_chan_attrs(struct xdr_stream *xdr, 5709 struct nfs4_channel_attrs *attrs) 5710 { 5711 __be32 *p; 5712 u32 nr_attrs, val; 5713 5714 p = xdr_inline_decode(xdr, 28); 5715 if (unlikely(!p)) 5716 return -EIO; 5717 val = be32_to_cpup(p++); /* headerpadsz */ 5718 if (val) 5719 return -EINVAL; /* no support for header padding yet */ 5720 attrs->max_rqst_sz = be32_to_cpup(p++); 5721 attrs->max_resp_sz = be32_to_cpup(p++); 5722 attrs->max_resp_sz_cached = be32_to_cpup(p++); 5723 attrs->max_ops = be32_to_cpup(p++); 5724 attrs->max_reqs = be32_to_cpup(p++); 5725 nr_attrs = be32_to_cpup(p); 5726 if (unlikely(nr_attrs > 1)) { 5727 printk(KERN_WARNING "NFS: %s: Invalid rdma channel attrs " 5728 "count %u\n", __func__, nr_attrs); 5729 return -EINVAL; 5730 } 5731 if (nr_attrs == 1) { 5732 p = xdr_inline_decode(xdr, 4); /* skip rdma_attrs */ 5733 if (unlikely(!p)) 5734 return -EIO; 5735 } 5736 return 0; 5737 } 5738 5739 static int decode_sessionid(struct xdr_stream *xdr, struct nfs4_sessionid *sid) 5740 { 5741 return decode_opaque_fixed(xdr, sid->data, NFS4_MAX_SESSIONID_LEN); 5742 } 5743 5744 static int decode_bind_conn_to_session(struct xdr_stream *xdr, 5745 struct nfs41_bind_conn_to_session_res *res) 5746 { 5747 __be32 *p; 5748 int status; 5749 5750 status = decode_op_hdr(xdr, OP_BIND_CONN_TO_SESSION); 5751 if (!status) 5752 status = decode_sessionid(xdr, &res->sessionid); 5753 if (unlikely(status)) 5754 return status; 5755 5756 /* dir flags, rdma mode bool */ 5757 p = xdr_inline_decode(xdr, 8); 5758 if (unlikely(!p)) 5759 return -EIO; 5760 5761 res->dir = be32_to_cpup(p++); 5762 if (res->dir == 0 || res->dir > NFS4_CDFS4_BOTH) 5763 return -EIO; 5764 if (be32_to_cpup(p) == 0) 5765 res->use_conn_in_rdma_mode = false; 5766 else 5767 res->use_conn_in_rdma_mode = true; 5768 5769 return 0; 5770 } 5771 5772 static int decode_create_session(struct xdr_stream *xdr, 5773 struct nfs41_create_session_res *res) 5774 { 5775 __be32 *p; 5776 int status; 5777 5778 status = decode_op_hdr(xdr, OP_CREATE_SESSION); 5779 if (!status) 5780 status = decode_sessionid(xdr, &res->sessionid); 5781 if (unlikely(status)) 5782 return status; 5783 5784 /* seqid, flags */ 5785 p = xdr_inline_decode(xdr, 8); 5786 if (unlikely(!p)) 5787 return -EIO; 5788 res->seqid = be32_to_cpup(p++); 5789 res->flags = be32_to_cpup(p); 5790 5791 /* Channel attributes */ 5792 status = decode_chan_attrs(xdr, &res->fc_attrs); 5793 if (!status) 5794 status = decode_chan_attrs(xdr, &res->bc_attrs); 5795 return status; 5796 } 5797 5798 static int decode_destroy_session(struct xdr_stream *xdr, void *dummy) 5799 { 5800 return decode_op_hdr(xdr, OP_DESTROY_SESSION); 5801 } 5802 5803 static int decode_destroy_clientid(struct xdr_stream *xdr, void *dummy) 5804 { 5805 return decode_op_hdr(xdr, OP_DESTROY_CLIENTID); 5806 } 5807 5808 static int decode_reclaim_complete(struct xdr_stream *xdr, void *dummy) 5809 { 5810 return decode_op_hdr(xdr, OP_RECLAIM_COMPLETE); 5811 } 5812 #endif /* CONFIG_NFS_V4_1 */ 5813 5814 static int decode_sequence(struct xdr_stream *xdr, 5815 struct nfs4_sequence_res *res, 5816 struct rpc_rqst *rqstp) 5817 { 5818 #if defined(CONFIG_NFS_V4_1) 5819 struct nfs4_session *session; 5820 struct nfs4_sessionid id; 5821 u32 dummy; 5822 int status; 5823 __be32 *p; 5824 5825 if (res->sr_slot == NULL) 5826 return 0; 5827 if (!res->sr_slot->table->session) 5828 return 0; 5829 5830 status = decode_op_hdr(xdr, OP_SEQUENCE); 5831 if (!status) 5832 status = decode_sessionid(xdr, &id); 5833 if (unlikely(status)) 5834 goto out_err; 5835 5836 /* 5837 * If the server returns different values for sessionID, slotID or 5838 * sequence number, the server is looney tunes. 5839 */ 5840 status = -EREMOTEIO; 5841 session = res->sr_slot->table->session; 5842 5843 if (memcmp(id.data, session->sess_id.data, 5844 NFS4_MAX_SESSIONID_LEN)) { 5845 dprintk("%s Invalid session id\n", __func__); 5846 goto out_err; 5847 } 5848 5849 p = xdr_inline_decode(xdr, 20); 5850 if (unlikely(!p)) 5851 goto out_overflow; 5852 5853 /* seqid */ 5854 dummy = be32_to_cpup(p++); 5855 if (dummy != res->sr_slot->seq_nr) { 5856 dprintk("%s Invalid sequence number\n", __func__); 5857 goto out_err; 5858 } 5859 /* slot id */ 5860 dummy = be32_to_cpup(p++); 5861 if (dummy != res->sr_slot->slot_nr) { 5862 dprintk("%s Invalid slot id\n", __func__); 5863 goto out_err; 5864 } 5865 /* highest slot id */ 5866 res->sr_highest_slotid = be32_to_cpup(p++); 5867 /* target highest slot id */ 5868 res->sr_target_highest_slotid = be32_to_cpup(p++); 5869 /* result flags */ 5870 res->sr_status_flags = be32_to_cpup(p); 5871 status = 0; 5872 out_err: 5873 res->sr_status = status; 5874 return status; 5875 out_overflow: 5876 status = -EIO; 5877 goto out_err; 5878 #else /* CONFIG_NFS_V4_1 */ 5879 return 0; 5880 #endif /* CONFIG_NFS_V4_1 */ 5881 } 5882 5883 #if defined(CONFIG_NFS_V4_1) 5884 static int decode_layout_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid) 5885 { 5886 stateid->type = NFS4_LAYOUT_STATEID_TYPE; 5887 return decode_stateid(xdr, stateid); 5888 } 5889 5890 static int decode_getdeviceinfo(struct xdr_stream *xdr, 5891 struct nfs4_getdeviceinfo_res *res) 5892 { 5893 struct pnfs_device *pdev = res->pdev; 5894 __be32 *p; 5895 uint32_t len, type; 5896 int status; 5897 5898 status = decode_op_hdr(xdr, OP_GETDEVICEINFO); 5899 if (status) { 5900 if (status == -ETOOSMALL) { 5901 p = xdr_inline_decode(xdr, 4); 5902 if (unlikely(!p)) 5903 return -EIO; 5904 pdev->mincount = be32_to_cpup(p); 5905 dprintk("%s: Min count too small. mincnt = %u\n", 5906 __func__, pdev->mincount); 5907 } 5908 return status; 5909 } 5910 5911 p = xdr_inline_decode(xdr, 8); 5912 if (unlikely(!p)) 5913 return -EIO; 5914 type = be32_to_cpup(p++); 5915 if (type != pdev->layout_type) { 5916 dprintk("%s: layout mismatch req: %u pdev: %u\n", 5917 __func__, pdev->layout_type, type); 5918 return -EINVAL; 5919 } 5920 /* 5921 * Get the length of the opaque device_addr4. xdr_read_pages places 5922 * the opaque device_addr4 in the xdr_buf->pages (pnfs_device->pages) 5923 * and places the remaining xdr data in xdr_buf->tail 5924 */ 5925 pdev->mincount = be32_to_cpup(p); 5926 if (xdr_read_pages(xdr, pdev->mincount) != pdev->mincount) 5927 return -EIO; 5928 5929 /* Parse notification bitmap, verifying that it is zero. */ 5930 p = xdr_inline_decode(xdr, 4); 5931 if (unlikely(!p)) 5932 return -EIO; 5933 len = be32_to_cpup(p); 5934 if (len) { 5935 uint32_t i; 5936 5937 p = xdr_inline_decode(xdr, 4 * len); 5938 if (unlikely(!p)) 5939 return -EIO; 5940 5941 res->notification = be32_to_cpup(p++); 5942 for (i = 1; i < len; i++) { 5943 if (be32_to_cpup(p++)) { 5944 dprintk("%s: unsupported notification\n", 5945 __func__); 5946 return -EIO; 5947 } 5948 } 5949 } 5950 return 0; 5951 } 5952 5953 static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req, 5954 struct nfs4_layoutget_res *res) 5955 { 5956 __be32 *p; 5957 int status; 5958 u32 layout_count; 5959 u32 recvd; 5960 5961 status = decode_op_hdr(xdr, OP_LAYOUTGET); 5962 if (status) 5963 goto out; 5964 p = xdr_inline_decode(xdr, 4); 5965 if (unlikely(!p)) 5966 goto out_overflow; 5967 res->return_on_close = be32_to_cpup(p); 5968 decode_layout_stateid(xdr, &res->stateid); 5969 p = xdr_inline_decode(xdr, 4); 5970 if (unlikely(!p)) 5971 goto out_overflow; 5972 layout_count = be32_to_cpup(p); 5973 if (!layout_count) { 5974 dprintk("%s: server responded with empty layout array\n", 5975 __func__); 5976 status = -EINVAL; 5977 goto out; 5978 } 5979 5980 p = xdr_inline_decode(xdr, 28); 5981 if (unlikely(!p)) 5982 goto out_overflow; 5983 p = xdr_decode_hyper(p, &res->range.offset); 5984 p = xdr_decode_hyper(p, &res->range.length); 5985 res->range.iomode = be32_to_cpup(p++); 5986 res->type = be32_to_cpup(p++); 5987 res->layoutp->len = be32_to_cpup(p); 5988 5989 dprintk("%s roff:%lu rlen:%lu riomode:%d, lo_type:0x%x, lo.len:%d\n", 5990 __func__, 5991 (unsigned long)res->range.offset, 5992 (unsigned long)res->range.length, 5993 res->range.iomode, 5994 res->type, 5995 res->layoutp->len); 5996 5997 recvd = xdr_read_pages(xdr, res->layoutp->len); 5998 if (res->layoutp->len > recvd) { 5999 dprintk("NFS: server cheating in layoutget reply: " 6000 "layout len %u > recvd %u\n", 6001 res->layoutp->len, recvd); 6002 status = -EINVAL; 6003 goto out; 6004 } 6005 6006 if (layout_count > 1) { 6007 /* We only handle a length one array at the moment. Any 6008 * further entries are just ignored. Note that this means 6009 * the client may see a response that is less than the 6010 * minimum it requested. 6011 */ 6012 dprintk("%s: server responded with %d layouts, dropping tail\n", 6013 __func__, layout_count); 6014 } 6015 6016 out: 6017 res->status = status; 6018 return status; 6019 out_overflow: 6020 status = -EIO; 6021 goto out; 6022 } 6023 6024 static int decode_layoutreturn(struct xdr_stream *xdr, 6025 struct nfs4_layoutreturn_res *res) 6026 { 6027 __be32 *p; 6028 int status; 6029 6030 status = decode_op_hdr(xdr, OP_LAYOUTRETURN); 6031 if (status) 6032 return status; 6033 p = xdr_inline_decode(xdr, 4); 6034 if (unlikely(!p)) 6035 return -EIO; 6036 res->lrs_present = be32_to_cpup(p); 6037 if (res->lrs_present) 6038 status = decode_layout_stateid(xdr, &res->stateid); 6039 else 6040 nfs4_stateid_copy(&res->stateid, &invalid_stateid); 6041 return status; 6042 } 6043 6044 static int decode_layoutcommit(struct xdr_stream *xdr, 6045 struct rpc_rqst *req, 6046 struct nfs4_layoutcommit_res *res) 6047 { 6048 __be32 *p; 6049 __u32 sizechanged; 6050 int status; 6051 6052 status = decode_op_hdr(xdr, OP_LAYOUTCOMMIT); 6053 res->status = status; 6054 if (status) 6055 return status; 6056 6057 p = xdr_inline_decode(xdr, 4); 6058 if (unlikely(!p)) 6059 return -EIO; 6060 sizechanged = be32_to_cpup(p); 6061 6062 if (sizechanged) { 6063 /* throw away new size */ 6064 p = xdr_inline_decode(xdr, 8); 6065 if (unlikely(!p)) 6066 return -EIO; 6067 } 6068 return 0; 6069 } 6070 6071 static int decode_test_stateid(struct xdr_stream *xdr, 6072 struct nfs41_test_stateid_res *res) 6073 { 6074 __be32 *p; 6075 int status; 6076 int num_res; 6077 6078 status = decode_op_hdr(xdr, OP_TEST_STATEID); 6079 if (status) 6080 return status; 6081 6082 p = xdr_inline_decode(xdr, 4); 6083 if (unlikely(!p)) 6084 return -EIO; 6085 num_res = be32_to_cpup(p++); 6086 if (num_res != 1) 6087 return -EIO; 6088 6089 p = xdr_inline_decode(xdr, 4); 6090 if (unlikely(!p)) 6091 return -EIO; 6092 res->status = be32_to_cpup(p++); 6093 6094 return status; 6095 } 6096 6097 static int decode_free_stateid(struct xdr_stream *xdr, 6098 struct nfs41_free_stateid_res *res) 6099 { 6100 res->status = decode_op_hdr(xdr, OP_FREE_STATEID); 6101 return res->status; 6102 } 6103 #else 6104 static inline 6105 int decode_layoutreturn(struct xdr_stream *xdr, 6106 struct nfs4_layoutreturn_res *res) 6107 { 6108 return 0; 6109 } 6110 6111 static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req, 6112 struct nfs4_layoutget_res *res) 6113 { 6114 return 0; 6115 } 6116 6117 #endif /* CONFIG_NFS_V4_1 */ 6118 6119 /* 6120 * END OF "GENERIC" DECODE ROUTINES. 6121 */ 6122 6123 /* 6124 * Decode OPEN_DOWNGRADE response 6125 */ 6126 static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp, 6127 struct xdr_stream *xdr, 6128 void *data) 6129 { 6130 struct nfs_closeres *res = data; 6131 struct compound_hdr hdr; 6132 int status; 6133 6134 status = decode_compound_hdr(xdr, &hdr); 6135 if (status) 6136 goto out; 6137 status = decode_sequence(xdr, &res->seq_res, rqstp); 6138 if (status) 6139 goto out; 6140 status = decode_putfh(xdr); 6141 if (status) 6142 goto out; 6143 if (res->lr_res) { 6144 status = decode_layoutreturn(xdr, res->lr_res); 6145 res->lr_ret = status; 6146 if (status) 6147 goto out; 6148 } 6149 status = decode_open_downgrade(xdr, res); 6150 out: 6151 return status; 6152 } 6153 6154 /* 6155 * Decode ACCESS response 6156 */ 6157 static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6158 void *data) 6159 { 6160 struct nfs4_accessres *res = data; 6161 struct compound_hdr hdr; 6162 int status; 6163 6164 status = decode_compound_hdr(xdr, &hdr); 6165 if (status) 6166 goto out; 6167 status = decode_sequence(xdr, &res->seq_res, rqstp); 6168 if (status) 6169 goto out; 6170 status = decode_putfh(xdr); 6171 if (status != 0) 6172 goto out; 6173 status = decode_access(xdr, &res->supported, &res->access); 6174 if (status != 0) 6175 goto out; 6176 if (res->fattr) 6177 decode_getfattr(xdr, res->fattr, res->server); 6178 out: 6179 return status; 6180 } 6181 6182 /* 6183 * Decode LOOKUP response 6184 */ 6185 static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6186 void *data) 6187 { 6188 struct nfs4_lookup_res *res = data; 6189 struct compound_hdr hdr; 6190 int status; 6191 6192 status = decode_compound_hdr(xdr, &hdr); 6193 if (status) 6194 goto out; 6195 status = decode_sequence(xdr, &res->seq_res, rqstp); 6196 if (status) 6197 goto out; 6198 status = decode_putfh(xdr); 6199 if (status) 6200 goto out; 6201 status = decode_lookup(xdr); 6202 if (status) 6203 goto out; 6204 status = decode_getfh(xdr, res->fh); 6205 if (status) 6206 goto out; 6207 status = decode_getfattr(xdr, res->fattr, res->server); 6208 out: 6209 return status; 6210 } 6211 6212 /* 6213 * Decode LOOKUPP response 6214 */ 6215 static int nfs4_xdr_dec_lookupp(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6216 void *data) 6217 { 6218 struct nfs4_lookupp_res *res = data; 6219 struct compound_hdr hdr; 6220 int status; 6221 6222 status = decode_compound_hdr(xdr, &hdr); 6223 if (status) 6224 goto out; 6225 status = decode_sequence(xdr, &res->seq_res, rqstp); 6226 if (status) 6227 goto out; 6228 status = decode_putfh(xdr); 6229 if (status) 6230 goto out; 6231 status = decode_lookupp(xdr); 6232 if (status) 6233 goto out; 6234 status = decode_getfh(xdr, res->fh); 6235 if (status) 6236 goto out; 6237 status = decode_getfattr(xdr, res->fattr, res->server); 6238 out: 6239 return status; 6240 } 6241 6242 /* 6243 * Decode LOOKUP_ROOT response 6244 */ 6245 static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp, 6246 struct xdr_stream *xdr, 6247 void *data) 6248 { 6249 struct nfs4_lookup_res *res = data; 6250 struct compound_hdr hdr; 6251 int status; 6252 6253 status = decode_compound_hdr(xdr, &hdr); 6254 if (status) 6255 goto out; 6256 status = decode_sequence(xdr, &res->seq_res, rqstp); 6257 if (status) 6258 goto out; 6259 status = decode_putrootfh(xdr); 6260 if (status) 6261 goto out; 6262 status = decode_getfh(xdr, res->fh); 6263 if (status == 0) 6264 status = decode_getfattr(xdr, res->fattr, res->server); 6265 out: 6266 return status; 6267 } 6268 6269 /* 6270 * Decode REMOVE response 6271 */ 6272 static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6273 void *data) 6274 { 6275 struct nfs_removeres *res = data; 6276 struct compound_hdr hdr; 6277 int status; 6278 6279 status = decode_compound_hdr(xdr, &hdr); 6280 if (status) 6281 goto out; 6282 status = decode_sequence(xdr, &res->seq_res, rqstp); 6283 if (status) 6284 goto out; 6285 status = decode_putfh(xdr); 6286 if (status) 6287 goto out; 6288 status = decode_remove(xdr, &res->cinfo); 6289 out: 6290 return status; 6291 } 6292 6293 /* 6294 * Decode RENAME response 6295 */ 6296 static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6297 void *data) 6298 { 6299 struct nfs_renameres *res = data; 6300 struct compound_hdr hdr; 6301 int status; 6302 6303 status = decode_compound_hdr(xdr, &hdr); 6304 if (status) 6305 goto out; 6306 status = decode_sequence(xdr, &res->seq_res, rqstp); 6307 if (status) 6308 goto out; 6309 status = decode_putfh(xdr); 6310 if (status) 6311 goto out; 6312 status = decode_savefh(xdr); 6313 if (status) 6314 goto out; 6315 status = decode_putfh(xdr); 6316 if (status) 6317 goto out; 6318 status = decode_rename(xdr, &res->old_cinfo, &res->new_cinfo); 6319 out: 6320 return status; 6321 } 6322 6323 /* 6324 * Decode LINK response 6325 */ 6326 static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6327 void *data) 6328 { 6329 struct nfs4_link_res *res = data; 6330 struct compound_hdr hdr; 6331 int status; 6332 6333 status = decode_compound_hdr(xdr, &hdr); 6334 if (status) 6335 goto out; 6336 status = decode_sequence(xdr, &res->seq_res, rqstp); 6337 if (status) 6338 goto out; 6339 status = decode_putfh(xdr); 6340 if (status) 6341 goto out; 6342 status = decode_savefh(xdr); 6343 if (status) 6344 goto out; 6345 status = decode_putfh(xdr); 6346 if (status) 6347 goto out; 6348 status = decode_link(xdr, &res->cinfo); 6349 if (status) 6350 goto out; 6351 /* 6352 * Note order: OP_LINK leaves the directory as the current 6353 * filehandle. 6354 */ 6355 status = decode_restorefh(xdr); 6356 if (status) 6357 goto out; 6358 decode_getfattr(xdr, res->fattr, res->server); 6359 out: 6360 return status; 6361 } 6362 6363 /* 6364 * Decode CREATE response 6365 */ 6366 static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6367 void *data) 6368 { 6369 struct nfs4_create_res *res = data; 6370 struct compound_hdr hdr; 6371 int status; 6372 6373 status = decode_compound_hdr(xdr, &hdr); 6374 if (status) 6375 goto out; 6376 status = decode_sequence(xdr, &res->seq_res, rqstp); 6377 if (status) 6378 goto out; 6379 status = decode_putfh(xdr); 6380 if (status) 6381 goto out; 6382 status = decode_create(xdr, &res->dir_cinfo); 6383 if (status) 6384 goto out; 6385 status = decode_getfh(xdr, res->fh); 6386 if (status) 6387 goto out; 6388 decode_getfattr(xdr, res->fattr, res->server); 6389 out: 6390 return status; 6391 } 6392 6393 /* 6394 * Decode SYMLINK response 6395 */ 6396 static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6397 void *res) 6398 { 6399 return nfs4_xdr_dec_create(rqstp, xdr, res); 6400 } 6401 6402 /* 6403 * Decode GETATTR response 6404 */ 6405 static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6406 void *data) 6407 { 6408 struct nfs4_getattr_res *res = data; 6409 struct compound_hdr hdr; 6410 int status; 6411 6412 status = decode_compound_hdr(xdr, &hdr); 6413 if (status) 6414 goto out; 6415 status = decode_sequence(xdr, &res->seq_res, rqstp); 6416 if (status) 6417 goto out; 6418 status = decode_putfh(xdr); 6419 if (status) 6420 goto out; 6421 status = decode_getfattr(xdr, res->fattr, res->server); 6422 out: 6423 return status; 6424 } 6425 6426 /* 6427 * Encode an SETACL request 6428 */ 6429 static void nfs4_xdr_enc_setacl(struct rpc_rqst *req, struct xdr_stream *xdr, 6430 const void *data) 6431 { 6432 const struct nfs_setaclargs *args = data; 6433 struct compound_hdr hdr = { 6434 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 6435 }; 6436 6437 encode_compound_hdr(xdr, req, &hdr); 6438 encode_sequence(xdr, &args->seq_args, &hdr); 6439 encode_putfh(xdr, args->fh, &hdr); 6440 encode_setacl(xdr, args, &hdr); 6441 encode_nops(&hdr); 6442 } 6443 6444 /* 6445 * Decode SETACL response 6446 */ 6447 static int 6448 nfs4_xdr_dec_setacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6449 void *data) 6450 { 6451 struct nfs_setaclres *res = data; 6452 struct compound_hdr hdr; 6453 int status; 6454 6455 status = decode_compound_hdr(xdr, &hdr); 6456 if (status) 6457 goto out; 6458 status = decode_sequence(xdr, &res->seq_res, rqstp); 6459 if (status) 6460 goto out; 6461 status = decode_putfh(xdr); 6462 if (status) 6463 goto out; 6464 status = decode_setattr(xdr); 6465 out: 6466 return status; 6467 } 6468 6469 /* 6470 * Decode GETACL response 6471 */ 6472 static int 6473 nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6474 void *data) 6475 { 6476 struct nfs_getaclres *res = data; 6477 struct compound_hdr hdr; 6478 int status; 6479 6480 if (res->acl_scratch != NULL) 6481 xdr_set_scratch_page(xdr, res->acl_scratch); 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 status = decode_getacl(xdr, rqstp, res); 6492 6493 out: 6494 return status; 6495 } 6496 6497 /* 6498 * Decode CLOSE response 6499 */ 6500 static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6501 void *data) 6502 { 6503 struct nfs_closeres *res = data; 6504 struct compound_hdr hdr; 6505 int status; 6506 6507 status = decode_compound_hdr(xdr, &hdr); 6508 if (status) 6509 goto out; 6510 status = decode_sequence(xdr, &res->seq_res, rqstp); 6511 if (status) 6512 goto out; 6513 status = decode_putfh(xdr); 6514 if (status) 6515 goto out; 6516 if (res->lr_res) { 6517 status = decode_layoutreturn(xdr, res->lr_res); 6518 res->lr_ret = status; 6519 if (status) 6520 goto out; 6521 } 6522 if (res->fattr != NULL) { 6523 status = decode_getfattr(xdr, res->fattr, res->server); 6524 if (status != 0) 6525 goto out; 6526 } 6527 status = decode_close(xdr, res); 6528 out: 6529 return status; 6530 } 6531 6532 /* 6533 * Decode OPEN response 6534 */ 6535 static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6536 void *data) 6537 { 6538 struct nfs_openres *res = data; 6539 struct compound_hdr hdr; 6540 int status; 6541 6542 status = decode_compound_hdr(xdr, &hdr); 6543 if (status) 6544 goto out; 6545 status = decode_sequence(xdr, &res->seq_res, rqstp); 6546 if (status) 6547 goto out; 6548 status = decode_putfh(xdr); 6549 if (status) 6550 goto out; 6551 status = decode_open(xdr, res); 6552 if (status) 6553 goto out; 6554 status = decode_getfh(xdr, &res->fh); 6555 if (status) 6556 goto out; 6557 if (res->access_request) 6558 decode_access(xdr, &res->access_supported, &res->access_result); 6559 decode_getfattr(xdr, res->f_attr, res->server); 6560 if (res->lg_res) 6561 decode_layoutget(xdr, rqstp, res->lg_res); 6562 out: 6563 return status; 6564 } 6565 6566 /* 6567 * Decode OPEN_CONFIRM response 6568 */ 6569 static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp, 6570 struct xdr_stream *xdr, 6571 void *data) 6572 { 6573 struct nfs_open_confirmres *res = data; 6574 struct compound_hdr hdr; 6575 int status; 6576 6577 status = decode_compound_hdr(xdr, &hdr); 6578 if (status) 6579 goto out; 6580 status = decode_putfh(xdr); 6581 if (status) 6582 goto out; 6583 status = decode_open_confirm(xdr, res); 6584 out: 6585 return status; 6586 } 6587 6588 /* 6589 * Decode OPEN response 6590 */ 6591 static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp, 6592 struct xdr_stream *xdr, 6593 void *data) 6594 { 6595 struct nfs_openres *res = data; 6596 struct compound_hdr hdr; 6597 int status; 6598 6599 status = decode_compound_hdr(xdr, &hdr); 6600 if (status) 6601 goto out; 6602 status = decode_sequence(xdr, &res->seq_res, rqstp); 6603 if (status) 6604 goto out; 6605 status = decode_putfh(xdr); 6606 if (status) 6607 goto out; 6608 status = decode_open(xdr, res); 6609 if (status) 6610 goto out; 6611 if (res->access_request) 6612 decode_access(xdr, &res->access_supported, &res->access_result); 6613 decode_getfattr(xdr, res->f_attr, res->server); 6614 if (res->lg_res) 6615 decode_layoutget(xdr, rqstp, res->lg_res); 6616 out: 6617 return status; 6618 } 6619 6620 /* 6621 * Decode SETATTR response 6622 */ 6623 static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp, 6624 struct xdr_stream *xdr, 6625 void *data) 6626 { 6627 struct nfs_setattrres *res = data; 6628 struct compound_hdr hdr; 6629 int status; 6630 6631 status = decode_compound_hdr(xdr, &hdr); 6632 if (status) 6633 goto out; 6634 status = decode_sequence(xdr, &res->seq_res, rqstp); 6635 if (status) 6636 goto out; 6637 status = decode_putfh(xdr); 6638 if (status) 6639 goto out; 6640 status = decode_setattr(xdr); 6641 if (status) 6642 goto out; 6643 decode_getfattr(xdr, res->fattr, res->server); 6644 out: 6645 return status; 6646 } 6647 6648 /* 6649 * Decode LOCK response 6650 */ 6651 static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6652 void *data) 6653 { 6654 struct nfs_lock_res *res = data; 6655 struct compound_hdr hdr; 6656 int status; 6657 6658 status = decode_compound_hdr(xdr, &hdr); 6659 if (status) 6660 goto out; 6661 status = decode_sequence(xdr, &res->seq_res, rqstp); 6662 if (status) 6663 goto out; 6664 status = decode_putfh(xdr); 6665 if (status) 6666 goto out; 6667 status = decode_lock(xdr, res); 6668 out: 6669 return status; 6670 } 6671 6672 /* 6673 * Decode LOCKT response 6674 */ 6675 static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6676 void *data) 6677 { 6678 struct nfs_lockt_res *res = data; 6679 struct compound_hdr hdr; 6680 int status; 6681 6682 status = decode_compound_hdr(xdr, &hdr); 6683 if (status) 6684 goto out; 6685 status = decode_sequence(xdr, &res->seq_res, rqstp); 6686 if (status) 6687 goto out; 6688 status = decode_putfh(xdr); 6689 if (status) 6690 goto out; 6691 status = decode_lockt(xdr, res); 6692 out: 6693 return status; 6694 } 6695 6696 /* 6697 * Decode LOCKU response 6698 */ 6699 static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6700 void *data) 6701 { 6702 struct nfs_locku_res *res = data; 6703 struct compound_hdr hdr; 6704 int status; 6705 6706 status = decode_compound_hdr(xdr, &hdr); 6707 if (status) 6708 goto out; 6709 status = decode_sequence(xdr, &res->seq_res, rqstp); 6710 if (status) 6711 goto out; 6712 status = decode_putfh(xdr); 6713 if (status) 6714 goto out; 6715 status = decode_locku(xdr, res); 6716 out: 6717 return status; 6718 } 6719 6720 static int nfs4_xdr_dec_release_lockowner(struct rpc_rqst *rqstp, 6721 struct xdr_stream *xdr, void *dummy) 6722 { 6723 struct compound_hdr hdr; 6724 int status; 6725 6726 status = decode_compound_hdr(xdr, &hdr); 6727 if (!status) 6728 status = decode_release_lockowner(xdr); 6729 return status; 6730 } 6731 6732 /* 6733 * Decode READLINK response 6734 */ 6735 static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp, 6736 struct xdr_stream *xdr, 6737 void *data) 6738 { 6739 struct nfs4_readlink_res *res = data; 6740 struct compound_hdr hdr; 6741 int status; 6742 6743 status = decode_compound_hdr(xdr, &hdr); 6744 if (status) 6745 goto out; 6746 status = decode_sequence(xdr, &res->seq_res, rqstp); 6747 if (status) 6748 goto out; 6749 status = decode_putfh(xdr); 6750 if (status) 6751 goto out; 6752 status = decode_readlink(xdr, rqstp); 6753 out: 6754 return status; 6755 } 6756 6757 /* 6758 * Decode READDIR response 6759 */ 6760 static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6761 void *data) 6762 { 6763 struct nfs4_readdir_res *res = data; 6764 struct compound_hdr hdr; 6765 int status; 6766 6767 status = decode_compound_hdr(xdr, &hdr); 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_readdir(xdr, rqstp, res); 6777 out: 6778 return status; 6779 } 6780 6781 /* 6782 * Decode Read response 6783 */ 6784 static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6785 void *data) 6786 { 6787 struct nfs_pgio_res *res = data; 6788 struct compound_hdr hdr; 6789 int status; 6790 6791 status = decode_compound_hdr(xdr, &hdr); 6792 res->op_status = hdr.status; 6793 if (status) 6794 goto out; 6795 status = decode_sequence(xdr, &res->seq_res, rqstp); 6796 if (status) 6797 goto out; 6798 status = decode_putfh(xdr); 6799 if (status) 6800 goto out; 6801 status = decode_read(xdr, rqstp, res); 6802 if (!status) 6803 status = res->count; 6804 out: 6805 return status; 6806 } 6807 6808 /* 6809 * Decode WRITE response 6810 */ 6811 static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6812 void *data) 6813 { 6814 struct nfs_pgio_res *res = data; 6815 struct compound_hdr hdr; 6816 int status; 6817 6818 status = decode_compound_hdr(xdr, &hdr); 6819 res->op_status = hdr.status; 6820 if (status) 6821 goto out; 6822 status = decode_sequence(xdr, &res->seq_res, rqstp); 6823 if (status) 6824 goto out; 6825 status = decode_putfh(xdr); 6826 if (status) 6827 goto out; 6828 status = decode_write(xdr, res); 6829 if (status) 6830 goto out; 6831 if (res->fattr) 6832 decode_getfattr(xdr, res->fattr, res->server); 6833 if (!status) 6834 status = res->count; 6835 out: 6836 return status; 6837 } 6838 6839 /* 6840 * Decode COMMIT response 6841 */ 6842 static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6843 void *data) 6844 { 6845 struct nfs_commitres *res = data; 6846 struct compound_hdr hdr; 6847 int status; 6848 6849 status = decode_compound_hdr(xdr, &hdr); 6850 res->op_status = hdr.status; 6851 if (status) 6852 goto out; 6853 status = decode_sequence(xdr, &res->seq_res, rqstp); 6854 if (status) 6855 goto out; 6856 status = decode_putfh(xdr); 6857 if (status) 6858 goto out; 6859 status = decode_commit(xdr, res); 6860 out: 6861 return status; 6862 } 6863 6864 /* 6865 * Decode FSINFO response 6866 */ 6867 static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr, 6868 void *data) 6869 { 6870 struct nfs4_fsinfo_res *res = data; 6871 struct compound_hdr hdr; 6872 int status; 6873 6874 status = decode_compound_hdr(xdr, &hdr); 6875 if (!status) 6876 status = decode_sequence(xdr, &res->seq_res, req); 6877 if (!status) 6878 status = decode_putfh(xdr); 6879 if (!status) 6880 status = decode_fsinfo(xdr, res->fsinfo); 6881 return status; 6882 } 6883 6884 /* 6885 * Decode PATHCONF response 6886 */ 6887 static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr, 6888 void *data) 6889 { 6890 struct nfs4_pathconf_res *res = data; 6891 struct compound_hdr hdr; 6892 int status; 6893 6894 status = decode_compound_hdr(xdr, &hdr); 6895 if (!status) 6896 status = decode_sequence(xdr, &res->seq_res, req); 6897 if (!status) 6898 status = decode_putfh(xdr); 6899 if (!status) 6900 status = decode_pathconf(xdr, res->pathconf); 6901 return status; 6902 } 6903 6904 /* 6905 * Decode STATFS response 6906 */ 6907 static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, struct xdr_stream *xdr, 6908 void *data) 6909 { 6910 struct nfs4_statfs_res *res = data; 6911 struct compound_hdr hdr; 6912 int status; 6913 6914 status = decode_compound_hdr(xdr, &hdr); 6915 if (!status) 6916 status = decode_sequence(xdr, &res->seq_res, req); 6917 if (!status) 6918 status = decode_putfh(xdr); 6919 if (!status) 6920 status = decode_statfs(xdr, res->fsstat); 6921 return status; 6922 } 6923 6924 /* 6925 * Decode GETATTR_BITMAP response 6926 */ 6927 static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req, 6928 struct xdr_stream *xdr, 6929 void *data) 6930 { 6931 struct nfs4_server_caps_res *res = data; 6932 struct compound_hdr hdr; 6933 int status; 6934 6935 status = decode_compound_hdr(xdr, &hdr); 6936 if (status) 6937 goto out; 6938 status = decode_sequence(xdr, &res->seq_res, req); 6939 if (status) 6940 goto out; 6941 status = decode_putfh(xdr); 6942 if (status) 6943 goto out; 6944 status = decode_server_caps(xdr, res); 6945 out: 6946 return status; 6947 } 6948 6949 /* 6950 * Decode RENEW response 6951 */ 6952 static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6953 void *__unused) 6954 { 6955 struct compound_hdr hdr; 6956 int status; 6957 6958 status = decode_compound_hdr(xdr, &hdr); 6959 if (!status) 6960 status = decode_renew(xdr); 6961 return status; 6962 } 6963 6964 /* 6965 * Decode SETCLIENTID response 6966 */ 6967 static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req, 6968 struct xdr_stream *xdr, 6969 void *data) 6970 { 6971 struct nfs4_setclientid_res *res = data; 6972 struct compound_hdr hdr; 6973 int status; 6974 6975 status = decode_compound_hdr(xdr, &hdr); 6976 if (!status) 6977 status = decode_setclientid(xdr, res); 6978 return status; 6979 } 6980 6981 /* 6982 * Decode SETCLIENTID_CONFIRM response 6983 */ 6984 static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req, 6985 struct xdr_stream *xdr, 6986 void *data) 6987 { 6988 struct compound_hdr hdr; 6989 int status; 6990 6991 status = decode_compound_hdr(xdr, &hdr); 6992 if (!status) 6993 status = decode_setclientid_confirm(xdr); 6994 return status; 6995 } 6996 6997 /* 6998 * Decode DELEGRETURN response 6999 */ 7000 static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp, 7001 struct xdr_stream *xdr, 7002 void *data) 7003 { 7004 struct nfs4_delegreturnres *res = data; 7005 struct compound_hdr hdr; 7006 int status; 7007 7008 status = decode_compound_hdr(xdr, &hdr); 7009 if (status) 7010 goto out; 7011 status = decode_sequence(xdr, &res->seq_res, rqstp); 7012 if (status) 7013 goto out; 7014 status = decode_putfh(xdr); 7015 if (status != 0) 7016 goto out; 7017 if (res->lr_res) { 7018 status = decode_layoutreturn(xdr, res->lr_res); 7019 res->lr_ret = status; 7020 if (status) 7021 goto out; 7022 } 7023 if (res->fattr) { 7024 status = decode_getfattr(xdr, res->fattr, res->server); 7025 if (status != 0) 7026 goto out; 7027 } 7028 status = decode_delegreturn(xdr); 7029 out: 7030 return status; 7031 } 7032 7033 /* 7034 * Decode FS_LOCATIONS response 7035 */ 7036 static int nfs4_xdr_dec_fs_locations(struct rpc_rqst *req, 7037 struct xdr_stream *xdr, 7038 void *data) 7039 { 7040 struct nfs4_fs_locations_res *res = data; 7041 struct compound_hdr hdr; 7042 int status; 7043 7044 status = decode_compound_hdr(xdr, &hdr); 7045 if (status) 7046 goto out; 7047 status = decode_sequence(xdr, &res->seq_res, req); 7048 if (status) 7049 goto out; 7050 status = decode_putfh(xdr); 7051 if (status) 7052 goto out; 7053 if (res->migration) { 7054 xdr_enter_page(xdr, PAGE_SIZE); 7055 status = decode_getfattr_generic(xdr, 7056 &res->fs_locations->fattr, 7057 NULL, res->fs_locations, 7058 res->fs_locations->server); 7059 if (status) 7060 goto out; 7061 if (res->renew) 7062 status = decode_renew(xdr); 7063 } else { 7064 status = decode_lookup(xdr); 7065 if (status) 7066 goto out; 7067 xdr_enter_page(xdr, PAGE_SIZE); 7068 status = decode_getfattr_generic(xdr, 7069 &res->fs_locations->fattr, 7070 NULL, res->fs_locations, 7071 res->fs_locations->server); 7072 } 7073 out: 7074 return status; 7075 } 7076 7077 /* 7078 * Decode SECINFO response 7079 */ 7080 static int nfs4_xdr_dec_secinfo(struct rpc_rqst *rqstp, 7081 struct xdr_stream *xdr, 7082 void *data) 7083 { 7084 struct nfs4_secinfo_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_secinfo(xdr, res); 7098 out: 7099 return status; 7100 } 7101 7102 /* 7103 * Decode FSID_PRESENT response 7104 */ 7105 static int nfs4_xdr_dec_fsid_present(struct rpc_rqst *rqstp, 7106 struct xdr_stream *xdr, 7107 void *data) 7108 { 7109 struct nfs4_fsid_present_res *res = data; 7110 struct compound_hdr hdr; 7111 int status; 7112 7113 status = decode_compound_hdr(xdr, &hdr); 7114 if (status) 7115 goto out; 7116 status = decode_sequence(xdr, &res->seq_res, rqstp); 7117 if (status) 7118 goto out; 7119 status = decode_putfh(xdr); 7120 if (status) 7121 goto out; 7122 status = decode_getfh(xdr, res->fh); 7123 if (status) 7124 goto out; 7125 if (res->renew) 7126 status = decode_renew(xdr); 7127 out: 7128 return status; 7129 } 7130 7131 #if defined(CONFIG_NFS_V4_1) 7132 /* 7133 * Decode BIND_CONN_TO_SESSION response 7134 */ 7135 static int nfs4_xdr_dec_bind_conn_to_session(struct rpc_rqst *rqstp, 7136 struct xdr_stream *xdr, 7137 void *res) 7138 { 7139 struct compound_hdr hdr; 7140 int status; 7141 7142 status = decode_compound_hdr(xdr, &hdr); 7143 if (!status) 7144 status = decode_bind_conn_to_session(xdr, res); 7145 return status; 7146 } 7147 7148 /* 7149 * Decode EXCHANGE_ID response 7150 */ 7151 static int nfs4_xdr_dec_exchange_id(struct rpc_rqst *rqstp, 7152 struct xdr_stream *xdr, 7153 void *res) 7154 { 7155 struct compound_hdr hdr; 7156 int status; 7157 7158 status = decode_compound_hdr(xdr, &hdr); 7159 if (!status) 7160 status = decode_exchange_id(xdr, res); 7161 return status; 7162 } 7163 7164 /* 7165 * Decode CREATE_SESSION response 7166 */ 7167 static int nfs4_xdr_dec_create_session(struct rpc_rqst *rqstp, 7168 struct xdr_stream *xdr, 7169 void *res) 7170 { 7171 struct compound_hdr hdr; 7172 int status; 7173 7174 status = decode_compound_hdr(xdr, &hdr); 7175 if (!status) 7176 status = decode_create_session(xdr, res); 7177 return status; 7178 } 7179 7180 /* 7181 * Decode DESTROY_SESSION response 7182 */ 7183 static int nfs4_xdr_dec_destroy_session(struct rpc_rqst *rqstp, 7184 struct xdr_stream *xdr, 7185 void *res) 7186 { 7187 struct compound_hdr hdr; 7188 int status; 7189 7190 status = decode_compound_hdr(xdr, &hdr); 7191 if (!status) 7192 status = decode_destroy_session(xdr, res); 7193 return status; 7194 } 7195 7196 /* 7197 * Decode DESTROY_CLIENTID response 7198 */ 7199 static int nfs4_xdr_dec_destroy_clientid(struct rpc_rqst *rqstp, 7200 struct xdr_stream *xdr, 7201 void *res) 7202 { 7203 struct compound_hdr hdr; 7204 int status; 7205 7206 status = decode_compound_hdr(xdr, &hdr); 7207 if (!status) 7208 status = decode_destroy_clientid(xdr, res); 7209 return status; 7210 } 7211 7212 /* 7213 * Decode SEQUENCE response 7214 */ 7215 static int nfs4_xdr_dec_sequence(struct rpc_rqst *rqstp, 7216 struct xdr_stream *xdr, 7217 void *res) 7218 { 7219 struct compound_hdr hdr; 7220 int status; 7221 7222 status = decode_compound_hdr(xdr, &hdr); 7223 if (!status) 7224 status = decode_sequence(xdr, res, rqstp); 7225 return status; 7226 } 7227 7228 #endif 7229 7230 /* 7231 * Decode GET_LEASE_TIME response 7232 */ 7233 static int nfs4_xdr_dec_get_lease_time(struct rpc_rqst *rqstp, 7234 struct xdr_stream *xdr, 7235 void *data) 7236 { 7237 struct nfs4_get_lease_time_res *res = data; 7238 struct compound_hdr hdr; 7239 int status; 7240 7241 status = decode_compound_hdr(xdr, &hdr); 7242 if (!status) 7243 status = decode_sequence(xdr, &res->lr_seq_res, rqstp); 7244 if (!status) 7245 status = decode_putrootfh(xdr); 7246 if (!status) 7247 status = decode_fsinfo(xdr, res->lr_fsinfo); 7248 return status; 7249 } 7250 7251 #ifdef CONFIG_NFS_V4_1 7252 7253 /* 7254 * Decode RECLAIM_COMPLETE response 7255 */ 7256 static int nfs4_xdr_dec_reclaim_complete(struct rpc_rqst *rqstp, 7257 struct xdr_stream *xdr, 7258 void *data) 7259 { 7260 struct nfs41_reclaim_complete_res *res = data; 7261 struct compound_hdr hdr; 7262 int status; 7263 7264 status = decode_compound_hdr(xdr, &hdr); 7265 if (!status) 7266 status = decode_sequence(xdr, &res->seq_res, rqstp); 7267 if (!status) 7268 status = decode_reclaim_complete(xdr, NULL); 7269 return status; 7270 } 7271 7272 /* 7273 * Decode GETDEVINFO response 7274 */ 7275 static int nfs4_xdr_dec_getdeviceinfo(struct rpc_rqst *rqstp, 7276 struct xdr_stream *xdr, 7277 void *data) 7278 { 7279 struct nfs4_getdeviceinfo_res *res = data; 7280 struct compound_hdr hdr; 7281 int status; 7282 7283 status = decode_compound_hdr(xdr, &hdr); 7284 if (status != 0) 7285 goto out; 7286 status = decode_sequence(xdr, &res->seq_res, rqstp); 7287 if (status != 0) 7288 goto out; 7289 status = decode_getdeviceinfo(xdr, res); 7290 out: 7291 return status; 7292 } 7293 7294 /* 7295 * Decode LAYOUTGET response 7296 */ 7297 static int nfs4_xdr_dec_layoutget(struct rpc_rqst *rqstp, 7298 struct xdr_stream *xdr, 7299 void *data) 7300 { 7301 struct nfs4_layoutget_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_layoutget(xdr, rqstp, res); 7315 out: 7316 return status; 7317 } 7318 7319 /* 7320 * Decode LAYOUTRETURN response 7321 */ 7322 static int nfs4_xdr_dec_layoutreturn(struct rpc_rqst *rqstp, 7323 struct xdr_stream *xdr, 7324 void *data) 7325 { 7326 struct nfs4_layoutreturn_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_layoutreturn(xdr, res); 7340 out: 7341 return status; 7342 } 7343 7344 /* 7345 * Decode LAYOUTCOMMIT response 7346 */ 7347 static int nfs4_xdr_dec_layoutcommit(struct rpc_rqst *rqstp, 7348 struct xdr_stream *xdr, 7349 void *data) 7350 { 7351 struct nfs4_layoutcommit_res *res = data; 7352 struct compound_hdr hdr; 7353 int status; 7354 7355 status = decode_compound_hdr(xdr, &hdr); 7356 if (status) 7357 goto out; 7358 status = decode_sequence(xdr, &res->seq_res, rqstp); 7359 if (status) 7360 goto out; 7361 status = decode_putfh(xdr); 7362 if (status) 7363 goto out; 7364 status = decode_layoutcommit(xdr, rqstp, res); 7365 if (status) 7366 goto out; 7367 decode_getfattr(xdr, res->fattr, res->server); 7368 out: 7369 return status; 7370 } 7371 7372 /* 7373 * Decode SECINFO_NO_NAME response 7374 */ 7375 static int nfs4_xdr_dec_secinfo_no_name(struct rpc_rqst *rqstp, 7376 struct xdr_stream *xdr, 7377 void *data) 7378 { 7379 struct nfs4_secinfo_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_putrootfh(xdr); 7390 if (status) 7391 goto out; 7392 status = decode_secinfo_no_name(xdr, res); 7393 out: 7394 return status; 7395 } 7396 7397 /* 7398 * Decode TEST_STATEID response 7399 */ 7400 static int nfs4_xdr_dec_test_stateid(struct rpc_rqst *rqstp, 7401 struct xdr_stream *xdr, 7402 void *data) 7403 { 7404 struct nfs41_test_stateid_res *res = data; 7405 struct compound_hdr hdr; 7406 int status; 7407 7408 status = decode_compound_hdr(xdr, &hdr); 7409 if (status) 7410 goto out; 7411 status = decode_sequence(xdr, &res->seq_res, rqstp); 7412 if (status) 7413 goto out; 7414 status = decode_test_stateid(xdr, res); 7415 out: 7416 return status; 7417 } 7418 7419 /* 7420 * Decode FREE_STATEID response 7421 */ 7422 static int nfs4_xdr_dec_free_stateid(struct rpc_rqst *rqstp, 7423 struct xdr_stream *xdr, 7424 void *data) 7425 { 7426 struct nfs41_free_stateid_res *res = data; 7427 struct compound_hdr hdr; 7428 int status; 7429 7430 status = decode_compound_hdr(xdr, &hdr); 7431 if (status) 7432 goto out; 7433 status = decode_sequence(xdr, &res->seq_res, rqstp); 7434 if (status) 7435 goto out; 7436 status = decode_free_stateid(xdr, res); 7437 out: 7438 return status; 7439 } 7440 #endif /* CONFIG_NFS_V4_1 */ 7441 7442 /** 7443 * nfs4_decode_dirent - Decode a single NFSv4 directory entry stored in 7444 * the local page cache. 7445 * @xdr: XDR stream where entry resides 7446 * @entry: buffer to fill in with entry data 7447 * @plus: boolean indicating whether this should be a readdirplus entry 7448 * 7449 * Returns zero if successful, otherwise a negative errno value is 7450 * returned. 7451 * 7452 * This function is not invoked during READDIR reply decoding, but 7453 * rather whenever an application invokes the getdents(2) system call 7454 * on a directory already in our cache. 7455 */ 7456 int nfs4_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry, 7457 bool plus) 7458 { 7459 unsigned int savep; 7460 uint32_t bitmap[3] = {0}; 7461 uint32_t len; 7462 uint64_t new_cookie; 7463 __be32 *p = xdr_inline_decode(xdr, 4); 7464 if (unlikely(!p)) 7465 return -EAGAIN; 7466 if (*p == xdr_zero) { 7467 p = xdr_inline_decode(xdr, 4); 7468 if (unlikely(!p)) 7469 return -EAGAIN; 7470 if (*p == xdr_zero) 7471 return -EAGAIN; 7472 entry->eof = 1; 7473 return -EBADCOOKIE; 7474 } 7475 7476 p = xdr_inline_decode(xdr, 12); 7477 if (unlikely(!p)) 7478 return -EAGAIN; 7479 p = xdr_decode_hyper(p, &new_cookie); 7480 entry->len = be32_to_cpup(p); 7481 7482 p = xdr_inline_decode(xdr, entry->len); 7483 if (unlikely(!p)) 7484 return -EAGAIN; 7485 entry->name = (const char *) p; 7486 7487 /* 7488 * In case the server doesn't return an inode number, 7489 * we fake one here. (We don't use inode number 0, 7490 * since glibc seems to choke on it...) 7491 */ 7492 entry->ino = 1; 7493 entry->fattr->valid = 0; 7494 7495 if (decode_attr_bitmap(xdr, bitmap) < 0) 7496 return -EAGAIN; 7497 7498 if (decode_attr_length(xdr, &len, &savep) < 0) 7499 return -EAGAIN; 7500 7501 if (decode_getfattr_attrs(xdr, bitmap, entry->fattr, entry->fh, 7502 NULL, entry->server) < 0) 7503 return -EAGAIN; 7504 if (entry->fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID) 7505 entry->ino = entry->fattr->mounted_on_fileid; 7506 else if (entry->fattr->valid & NFS_ATTR_FATTR_FILEID) 7507 entry->ino = entry->fattr->fileid; 7508 7509 entry->d_type = DT_UNKNOWN; 7510 if (entry->fattr->valid & NFS_ATTR_FATTR_TYPE) 7511 entry->d_type = nfs_umode_to_dtype(entry->fattr->mode); 7512 7513 entry->prev_cookie = entry->cookie; 7514 entry->cookie = new_cookie; 7515 7516 return 0; 7517 } 7518 7519 /* 7520 * We need to translate between nfs status return values and 7521 * the local errno values which may not be the same. 7522 */ 7523 static struct { 7524 int stat; 7525 int errno; 7526 } nfs_errtbl[] = { 7527 { NFS4_OK, 0 }, 7528 { NFS4ERR_PERM, -EPERM }, 7529 { NFS4ERR_NOENT, -ENOENT }, 7530 { NFS4ERR_IO, -errno_NFSERR_IO}, 7531 { NFS4ERR_NXIO, -ENXIO }, 7532 { NFS4ERR_ACCESS, -EACCES }, 7533 { NFS4ERR_EXIST, -EEXIST }, 7534 { NFS4ERR_XDEV, -EXDEV }, 7535 { NFS4ERR_NOTDIR, -ENOTDIR }, 7536 { NFS4ERR_ISDIR, -EISDIR }, 7537 { NFS4ERR_INVAL, -EINVAL }, 7538 { NFS4ERR_FBIG, -EFBIG }, 7539 { NFS4ERR_NOSPC, -ENOSPC }, 7540 { NFS4ERR_ROFS, -EROFS }, 7541 { NFS4ERR_MLINK, -EMLINK }, 7542 { NFS4ERR_NAMETOOLONG, -ENAMETOOLONG }, 7543 { NFS4ERR_NOTEMPTY, -ENOTEMPTY }, 7544 { NFS4ERR_DQUOT, -EDQUOT }, 7545 { NFS4ERR_STALE, -ESTALE }, 7546 { NFS4ERR_BADHANDLE, -EBADHANDLE }, 7547 { NFS4ERR_BAD_COOKIE, -EBADCOOKIE }, 7548 { NFS4ERR_NOTSUPP, -ENOTSUPP }, 7549 { NFS4ERR_TOOSMALL, -ETOOSMALL }, 7550 { NFS4ERR_SERVERFAULT, -EREMOTEIO }, 7551 { NFS4ERR_BADTYPE, -EBADTYPE }, 7552 { NFS4ERR_LOCKED, -EAGAIN }, 7553 { NFS4ERR_SYMLINK, -ELOOP }, 7554 { NFS4ERR_OP_ILLEGAL, -EOPNOTSUPP }, 7555 { NFS4ERR_DEADLOCK, -EDEADLK }, 7556 { NFS4ERR_NOXATTR, -ENODATA }, 7557 { NFS4ERR_XATTR2BIG, -E2BIG }, 7558 { -1, -EIO } 7559 }; 7560 7561 /* 7562 * Convert an NFS error code to a local one. 7563 * This one is used jointly by NFSv2 and NFSv3. 7564 */ 7565 static int 7566 nfs4_stat_to_errno(int stat) 7567 { 7568 int i; 7569 for (i = 0; nfs_errtbl[i].stat != -1; i++) { 7570 if (nfs_errtbl[i].stat == stat) 7571 return nfs_errtbl[i].errno; 7572 } 7573 if (stat <= 10000 || stat > 10100) { 7574 /* The server is looney tunes. */ 7575 return -EREMOTEIO; 7576 } 7577 /* If we cannot translate the error, the recovery routines should 7578 * handle it. 7579 * Note: remaining NFSv4 error codes have values > 10000, so should 7580 * not conflict with native Linux error codes. 7581 */ 7582 return -stat; 7583 } 7584 7585 #ifdef CONFIG_NFS_V4_2 7586 #include "nfs42xdr.c" 7587 #endif /* CONFIG_NFS_V4_2 */ 7588 7589 #define PROC(proc, argtype, restype) \ 7590 [NFSPROC4_CLNT_##proc] = { \ 7591 .p_proc = NFSPROC4_COMPOUND, \ 7592 .p_encode = nfs4_xdr_##argtype, \ 7593 .p_decode = nfs4_xdr_##restype, \ 7594 .p_arglen = NFS4_##argtype##_sz, \ 7595 .p_replen = NFS4_##restype##_sz, \ 7596 .p_statidx = NFSPROC4_CLNT_##proc, \ 7597 .p_name = #proc, \ 7598 } 7599 7600 #define STUB(proc) \ 7601 [NFSPROC4_CLNT_##proc] = { \ 7602 .p_name = #proc, \ 7603 } 7604 7605 #if defined(CONFIG_NFS_V4_1) 7606 #define PROC41(proc, argtype, restype) \ 7607 PROC(proc, argtype, restype) 7608 #else 7609 #define PROC41(proc, argtype, restype) \ 7610 STUB(proc) 7611 #endif 7612 7613 #if defined(CONFIG_NFS_V4_2) 7614 #define PROC42(proc, argtype, restype) \ 7615 PROC(proc, argtype, restype) 7616 #else 7617 #define PROC42(proc, argtype, restype) \ 7618 STUB(proc) 7619 #endif 7620 7621 const struct rpc_procinfo nfs4_procedures[] = { 7622 PROC(READ, enc_read, dec_read), 7623 PROC(WRITE, enc_write, dec_write), 7624 PROC(COMMIT, enc_commit, dec_commit), 7625 PROC(OPEN, enc_open, dec_open), 7626 PROC(OPEN_CONFIRM, enc_open_confirm, dec_open_confirm), 7627 PROC(OPEN_NOATTR, enc_open_noattr, dec_open_noattr), 7628 PROC(OPEN_DOWNGRADE, enc_open_downgrade, dec_open_downgrade), 7629 PROC(CLOSE, enc_close, dec_close), 7630 PROC(SETATTR, enc_setattr, dec_setattr), 7631 PROC(FSINFO, enc_fsinfo, dec_fsinfo), 7632 PROC(RENEW, enc_renew, dec_renew), 7633 PROC(SETCLIENTID, enc_setclientid, dec_setclientid), 7634 PROC(SETCLIENTID_CONFIRM, enc_setclientid_confirm, dec_setclientid_confirm), 7635 PROC(LOCK, enc_lock, dec_lock), 7636 PROC(LOCKT, enc_lockt, dec_lockt), 7637 PROC(LOCKU, enc_locku, dec_locku), 7638 PROC(ACCESS, enc_access, dec_access), 7639 PROC(GETATTR, enc_getattr, dec_getattr), 7640 PROC(LOOKUP, enc_lookup, dec_lookup), 7641 PROC(LOOKUP_ROOT, enc_lookup_root, dec_lookup_root), 7642 PROC(REMOVE, enc_remove, dec_remove), 7643 PROC(RENAME, enc_rename, dec_rename), 7644 PROC(LINK, enc_link, dec_link), 7645 PROC(SYMLINK, enc_symlink, dec_symlink), 7646 PROC(CREATE, enc_create, dec_create), 7647 PROC(PATHCONF, enc_pathconf, dec_pathconf), 7648 PROC(STATFS, enc_statfs, dec_statfs), 7649 PROC(READLINK, enc_readlink, dec_readlink), 7650 PROC(READDIR, enc_readdir, dec_readdir), 7651 PROC(SERVER_CAPS, enc_server_caps, dec_server_caps), 7652 PROC(DELEGRETURN, enc_delegreturn, dec_delegreturn), 7653 PROC(GETACL, enc_getacl, dec_getacl), 7654 PROC(SETACL, enc_setacl, dec_setacl), 7655 PROC(FS_LOCATIONS, enc_fs_locations, dec_fs_locations), 7656 PROC(RELEASE_LOCKOWNER, enc_release_lockowner, dec_release_lockowner), 7657 PROC(SECINFO, enc_secinfo, dec_secinfo), 7658 PROC(FSID_PRESENT, enc_fsid_present, dec_fsid_present), 7659 PROC41(EXCHANGE_ID, enc_exchange_id, dec_exchange_id), 7660 PROC41(CREATE_SESSION, enc_create_session, dec_create_session), 7661 PROC41(DESTROY_SESSION, enc_destroy_session, dec_destroy_session), 7662 PROC41(SEQUENCE, enc_sequence, dec_sequence), 7663 PROC(GET_LEASE_TIME, enc_get_lease_time, dec_get_lease_time), 7664 PROC41(RECLAIM_COMPLETE,enc_reclaim_complete, dec_reclaim_complete), 7665 PROC41(GETDEVICEINFO, enc_getdeviceinfo, dec_getdeviceinfo), 7666 PROC41(LAYOUTGET, enc_layoutget, dec_layoutget), 7667 PROC41(LAYOUTCOMMIT, enc_layoutcommit, dec_layoutcommit), 7668 PROC41(LAYOUTRETURN, enc_layoutreturn, dec_layoutreturn), 7669 PROC41(SECINFO_NO_NAME, enc_secinfo_no_name, dec_secinfo_no_name), 7670 PROC41(TEST_STATEID, enc_test_stateid, dec_test_stateid), 7671 PROC41(FREE_STATEID, enc_free_stateid, dec_free_stateid), 7672 STUB(GETDEVICELIST), 7673 PROC41(BIND_CONN_TO_SESSION, 7674 enc_bind_conn_to_session, dec_bind_conn_to_session), 7675 PROC41(DESTROY_CLIENTID,enc_destroy_clientid, dec_destroy_clientid), 7676 PROC42(SEEK, enc_seek, dec_seek), 7677 PROC42(ALLOCATE, enc_allocate, dec_allocate), 7678 PROC42(DEALLOCATE, enc_deallocate, dec_deallocate), 7679 PROC42(LAYOUTSTATS, enc_layoutstats, dec_layoutstats), 7680 PROC42(CLONE, enc_clone, dec_clone), 7681 PROC42(COPY, enc_copy, dec_copy), 7682 PROC42(OFFLOAD_CANCEL, enc_offload_cancel, dec_offload_cancel), 7683 PROC42(COPY_NOTIFY, enc_copy_notify, dec_copy_notify), 7684 PROC(LOOKUPP, enc_lookupp, dec_lookupp), 7685 PROC42(LAYOUTERROR, enc_layouterror, dec_layouterror), 7686 PROC42(GETXATTR, enc_getxattr, dec_getxattr), 7687 PROC42(SETXATTR, enc_setxattr, dec_setxattr), 7688 PROC42(LISTXATTRS, enc_listxattrs, dec_listxattrs), 7689 PROC42(REMOVEXATTR, enc_removexattr, dec_removexattr), 7690 PROC42(READ_PLUS, enc_read_plus, dec_read_plus), 7691 }; 7692 7693 static unsigned int nfs_version4_counts[ARRAY_SIZE(nfs4_procedures)]; 7694 const struct rpc_version nfs_version4 = { 7695 .number = 4, 7696 .nrprocs = ARRAY_SIZE(nfs4_procedures), 7697 .procs = nfs4_procedures, 7698 .counts = nfs_version4_counts, 7699 }; 7700