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_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid) 3537 { 3538 __be32 *p; 3539 int ret = 0; 3540 3541 *fileid = 0; 3542 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEID - 1U))) 3543 return -EIO; 3544 if (likely(bitmap[0] & FATTR4_WORD0_FILEID)) { 3545 p = xdr_inline_decode(xdr, 8); 3546 if (unlikely(!p)) 3547 return -EIO; 3548 xdr_decode_hyper(p, fileid); 3549 bitmap[0] &= ~FATTR4_WORD0_FILEID; 3550 ret = NFS_ATTR_FATTR_FILEID; 3551 } 3552 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid); 3553 return ret; 3554 } 3555 3556 static int decode_attr_mounted_on_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid) 3557 { 3558 __be32 *p; 3559 int ret = 0; 3560 3561 *fileid = 0; 3562 if (unlikely(bitmap[1] & (FATTR4_WORD1_MOUNTED_ON_FILEID - 1U))) 3563 return -EIO; 3564 if (likely(bitmap[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)) { 3565 p = xdr_inline_decode(xdr, 8); 3566 if (unlikely(!p)) 3567 return -EIO; 3568 xdr_decode_hyper(p, fileid); 3569 bitmap[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID; 3570 ret = NFS_ATTR_FATTR_MOUNTED_ON_FILEID; 3571 } 3572 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid); 3573 return ret; 3574 } 3575 3576 static int decode_attr_files_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 3577 { 3578 __be32 *p; 3579 int status = 0; 3580 3581 *res = 0; 3582 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_AVAIL - 1U))) 3583 return -EIO; 3584 if (likely(bitmap[0] & FATTR4_WORD0_FILES_AVAIL)) { 3585 p = xdr_inline_decode(xdr, 8); 3586 if (unlikely(!p)) 3587 return -EIO; 3588 xdr_decode_hyper(p, res); 3589 bitmap[0] &= ~FATTR4_WORD0_FILES_AVAIL; 3590 } 3591 dprintk("%s: files avail=%Lu\n", __func__, (unsigned long long)*res); 3592 return status; 3593 } 3594 3595 static int decode_attr_files_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 3596 { 3597 __be32 *p; 3598 int status = 0; 3599 3600 *res = 0; 3601 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_FREE - 1U))) 3602 return -EIO; 3603 if (likely(bitmap[0] & FATTR4_WORD0_FILES_FREE)) { 3604 p = xdr_inline_decode(xdr, 8); 3605 if (unlikely(!p)) 3606 return -EIO; 3607 xdr_decode_hyper(p, res); 3608 bitmap[0] &= ~FATTR4_WORD0_FILES_FREE; 3609 } 3610 dprintk("%s: files free=%Lu\n", __func__, (unsigned long long)*res); 3611 return status; 3612 } 3613 3614 static int decode_attr_files_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 3615 { 3616 __be32 *p; 3617 int status = 0; 3618 3619 *res = 0; 3620 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_TOTAL - 1U))) 3621 return -EIO; 3622 if (likely(bitmap[0] & FATTR4_WORD0_FILES_TOTAL)) { 3623 p = xdr_inline_decode(xdr, 8); 3624 if (unlikely(!p)) 3625 return -EIO; 3626 xdr_decode_hyper(p, res); 3627 bitmap[0] &= ~FATTR4_WORD0_FILES_TOTAL; 3628 } 3629 dprintk("%s: files total=%Lu\n", __func__, (unsigned long long)*res); 3630 return status; 3631 } 3632 3633 static int decode_pathname(struct xdr_stream *xdr, struct nfs4_pathname *path) 3634 { 3635 u32 n; 3636 __be32 *p; 3637 int status = 0; 3638 3639 p = xdr_inline_decode(xdr, 4); 3640 if (unlikely(!p)) 3641 return -EIO; 3642 n = be32_to_cpup(p); 3643 if (n == 0) 3644 goto root_path; 3645 dprintk("pathname4: "); 3646 if (n > NFS4_PATHNAME_MAXCOMPONENTS) { 3647 dprintk("cannot parse %d components in path\n", n); 3648 goto out_eio; 3649 } 3650 for (path->ncomponents = 0; path->ncomponents < n; path->ncomponents++) { 3651 struct nfs4_string *component = &path->components[path->ncomponents]; 3652 status = decode_opaque_inline(xdr, &component->len, &component->data); 3653 if (unlikely(status != 0)) 3654 goto out_eio; 3655 ifdebug (XDR) 3656 pr_cont("%s%.*s ", 3657 (path->ncomponents != n ? "/ " : ""), 3658 component->len, component->data); 3659 } 3660 out: 3661 return status; 3662 root_path: 3663 /* a root pathname is sent as a zero component4 */ 3664 path->ncomponents = 1; 3665 path->components[0].len=0; 3666 path->components[0].data=NULL; 3667 dprintk("pathname4: /\n"); 3668 goto out; 3669 out_eio: 3670 dprintk(" status %d", status); 3671 status = -EIO; 3672 goto out; 3673 } 3674 3675 static int decode_attr_fs_locations(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_fs_locations *res) 3676 { 3677 int n; 3678 __be32 *p; 3679 int status = -EIO; 3680 3681 if (unlikely(bitmap[0] & (FATTR4_WORD0_FS_LOCATIONS -1U))) 3682 goto out; 3683 status = 0; 3684 if (unlikely(!(bitmap[0] & FATTR4_WORD0_FS_LOCATIONS))) 3685 goto out; 3686 bitmap[0] &= ~FATTR4_WORD0_FS_LOCATIONS; 3687 status = -EIO; 3688 /* Ignore borken servers that return unrequested attrs */ 3689 if (unlikely(res == NULL)) 3690 goto out; 3691 dprintk("%s: fsroot:\n", __func__); 3692 status = decode_pathname(xdr, &res->fs_path); 3693 if (unlikely(status != 0)) 3694 goto out; 3695 p = xdr_inline_decode(xdr, 4); 3696 if (unlikely(!p)) 3697 goto out_eio; 3698 n = be32_to_cpup(p); 3699 if (n <= 0) 3700 goto out_eio; 3701 for (res->nlocations = 0; res->nlocations < n; res->nlocations++) { 3702 u32 m; 3703 struct nfs4_fs_location *loc; 3704 3705 if (res->nlocations == NFS4_FS_LOCATIONS_MAXENTRIES) 3706 break; 3707 loc = &res->locations[res->nlocations]; 3708 p = xdr_inline_decode(xdr, 4); 3709 if (unlikely(!p)) 3710 goto out_eio; 3711 m = be32_to_cpup(p); 3712 3713 dprintk("%s: servers:\n", __func__); 3714 for (loc->nservers = 0; loc->nservers < m; loc->nservers++) { 3715 struct nfs4_string *server; 3716 3717 if (loc->nservers == NFS4_FS_LOCATION_MAXSERVERS) { 3718 unsigned int i; 3719 dprintk("%s: using first %u of %u servers " 3720 "returned for location %u\n", 3721 __func__, 3722 NFS4_FS_LOCATION_MAXSERVERS, 3723 m, res->nlocations); 3724 for (i = loc->nservers; i < m; i++) { 3725 unsigned int len; 3726 char *data; 3727 status = decode_opaque_inline(xdr, &len, &data); 3728 if (unlikely(status != 0)) 3729 goto out_eio; 3730 } 3731 break; 3732 } 3733 server = &loc->servers[loc->nservers]; 3734 status = decode_opaque_inline(xdr, &server->len, &server->data); 3735 if (unlikely(status != 0)) 3736 goto out_eio; 3737 dprintk("%s ", server->data); 3738 } 3739 status = decode_pathname(xdr, &loc->rootpath); 3740 if (unlikely(status != 0)) 3741 goto out_eio; 3742 } 3743 if (res->nlocations != 0) 3744 status = NFS_ATTR_FATTR_V4_LOCATIONS; 3745 out: 3746 dprintk("%s: fs_locations done, error = %d\n", __func__, status); 3747 return status; 3748 out_eio: 3749 status = -EIO; 3750 goto out; 3751 } 3752 3753 static int decode_attr_maxfilesize(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 3754 { 3755 __be32 *p; 3756 int status = 0; 3757 3758 *res = 0; 3759 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXFILESIZE - 1U))) 3760 return -EIO; 3761 if (likely(bitmap[0] & FATTR4_WORD0_MAXFILESIZE)) { 3762 p = xdr_inline_decode(xdr, 8); 3763 if (unlikely(!p)) 3764 return -EIO; 3765 xdr_decode_hyper(p, res); 3766 bitmap[0] &= ~FATTR4_WORD0_MAXFILESIZE; 3767 } 3768 dprintk("%s: maxfilesize=%Lu\n", __func__, (unsigned long long)*res); 3769 return status; 3770 } 3771 3772 static int decode_attr_maxlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxlink) 3773 { 3774 __be32 *p; 3775 int status = 0; 3776 3777 *maxlink = 1; 3778 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXLINK - 1U))) 3779 return -EIO; 3780 if (likely(bitmap[0] & FATTR4_WORD0_MAXLINK)) { 3781 p = xdr_inline_decode(xdr, 4); 3782 if (unlikely(!p)) 3783 return -EIO; 3784 *maxlink = be32_to_cpup(p); 3785 bitmap[0] &= ~FATTR4_WORD0_MAXLINK; 3786 } 3787 dprintk("%s: maxlink=%u\n", __func__, *maxlink); 3788 return status; 3789 } 3790 3791 static int decode_attr_maxname(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxname) 3792 { 3793 __be32 *p; 3794 int status = 0; 3795 3796 *maxname = 1024; 3797 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXNAME - 1U))) 3798 return -EIO; 3799 if (likely(bitmap[0] & FATTR4_WORD0_MAXNAME)) { 3800 p = xdr_inline_decode(xdr, 4); 3801 if (unlikely(!p)) 3802 return -EIO; 3803 *maxname = be32_to_cpup(p); 3804 bitmap[0] &= ~FATTR4_WORD0_MAXNAME; 3805 } 3806 dprintk("%s: maxname=%u\n", __func__, *maxname); 3807 return status; 3808 } 3809 3810 static int decode_attr_maxread(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) 3811 { 3812 __be32 *p; 3813 int status = 0; 3814 3815 *res = 1024; 3816 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXREAD - 1U))) 3817 return -EIO; 3818 if (likely(bitmap[0] & FATTR4_WORD0_MAXREAD)) { 3819 uint64_t maxread; 3820 p = xdr_inline_decode(xdr, 8); 3821 if (unlikely(!p)) 3822 return -EIO; 3823 xdr_decode_hyper(p, &maxread); 3824 if (maxread > 0x7FFFFFFF) 3825 maxread = 0x7FFFFFFF; 3826 *res = (uint32_t)maxread; 3827 bitmap[0] &= ~FATTR4_WORD0_MAXREAD; 3828 } 3829 dprintk("%s: maxread=%lu\n", __func__, (unsigned long)*res); 3830 return status; 3831 } 3832 3833 static int decode_attr_maxwrite(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) 3834 { 3835 __be32 *p; 3836 int status = 0; 3837 3838 *res = 1024; 3839 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXWRITE - 1U))) 3840 return -EIO; 3841 if (likely(bitmap[0] & FATTR4_WORD0_MAXWRITE)) { 3842 uint64_t maxwrite; 3843 p = xdr_inline_decode(xdr, 8); 3844 if (unlikely(!p)) 3845 return -EIO; 3846 xdr_decode_hyper(p, &maxwrite); 3847 if (maxwrite > 0x7FFFFFFF) 3848 maxwrite = 0x7FFFFFFF; 3849 *res = (uint32_t)maxwrite; 3850 bitmap[0] &= ~FATTR4_WORD0_MAXWRITE; 3851 } 3852 dprintk("%s: maxwrite=%lu\n", __func__, (unsigned long)*res); 3853 return status; 3854 } 3855 3856 static int decode_attr_mode(struct xdr_stream *xdr, uint32_t *bitmap, umode_t *mode) 3857 { 3858 uint32_t tmp; 3859 __be32 *p; 3860 int ret = 0; 3861 3862 *mode = 0; 3863 if (unlikely(bitmap[1] & (FATTR4_WORD1_MODE - 1U))) 3864 return -EIO; 3865 if (likely(bitmap[1] & FATTR4_WORD1_MODE)) { 3866 p = xdr_inline_decode(xdr, 4); 3867 if (unlikely(!p)) 3868 return -EIO; 3869 tmp = be32_to_cpup(p); 3870 *mode = tmp & ~S_IFMT; 3871 bitmap[1] &= ~FATTR4_WORD1_MODE; 3872 ret = NFS_ATTR_FATTR_MODE; 3873 } 3874 dprintk("%s: file mode=0%o\n", __func__, (unsigned int)*mode); 3875 return ret; 3876 } 3877 3878 static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *nlink) 3879 { 3880 __be32 *p; 3881 int ret = 0; 3882 3883 *nlink = 1; 3884 if (unlikely(bitmap[1] & (FATTR4_WORD1_NUMLINKS - 1U))) 3885 return -EIO; 3886 if (likely(bitmap[1] & FATTR4_WORD1_NUMLINKS)) { 3887 p = xdr_inline_decode(xdr, 4); 3888 if (unlikely(!p)) 3889 return -EIO; 3890 *nlink = be32_to_cpup(p); 3891 bitmap[1] &= ~FATTR4_WORD1_NUMLINKS; 3892 ret = NFS_ATTR_FATTR_NLINK; 3893 } 3894 dprintk("%s: nlink=%u\n", __func__, (unsigned int)*nlink); 3895 return ret; 3896 } 3897 3898 static ssize_t decode_nfs4_string(struct xdr_stream *xdr, 3899 struct nfs4_string *name, gfp_t gfp_flags) 3900 { 3901 ssize_t ret; 3902 3903 ret = xdr_stream_decode_string_dup(xdr, &name->data, 3904 XDR_MAX_NETOBJ, gfp_flags); 3905 name->len = 0; 3906 if (ret > 0) 3907 name->len = ret; 3908 return ret; 3909 } 3910 3911 static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap, 3912 const struct nfs_server *server, kuid_t *uid, 3913 struct nfs4_string *owner_name) 3914 { 3915 ssize_t len; 3916 char *p; 3917 3918 *uid = make_kuid(&init_user_ns, -2); 3919 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER - 1U))) 3920 return -EIO; 3921 if (!(bitmap[1] & FATTR4_WORD1_OWNER)) 3922 return 0; 3923 bitmap[1] &= ~FATTR4_WORD1_OWNER; 3924 3925 if (owner_name != NULL) { 3926 len = decode_nfs4_string(xdr, owner_name, GFP_NOIO); 3927 if (len <= 0) 3928 goto out; 3929 dprintk("%s: name=%s\n", __func__, owner_name->data); 3930 return NFS_ATTR_FATTR_OWNER_NAME; 3931 } else { 3932 len = xdr_stream_decode_opaque_inline(xdr, (void **)&p, 3933 XDR_MAX_NETOBJ); 3934 if (len <= 0 || nfs_map_name_to_uid(server, p, len, uid) != 0) 3935 goto out; 3936 dprintk("%s: uid=%d\n", __func__, (int)from_kuid(&init_user_ns, *uid)); 3937 return NFS_ATTR_FATTR_OWNER; 3938 } 3939 out: 3940 if (len == -EBADMSG) 3941 return -EIO; 3942 return 0; 3943 } 3944 3945 static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap, 3946 const struct nfs_server *server, kgid_t *gid, 3947 struct nfs4_string *group_name) 3948 { 3949 ssize_t len; 3950 char *p; 3951 3952 *gid = make_kgid(&init_user_ns, -2); 3953 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER_GROUP - 1U))) 3954 return -EIO; 3955 if (!(bitmap[1] & FATTR4_WORD1_OWNER_GROUP)) 3956 return 0; 3957 bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP; 3958 3959 if (group_name != NULL) { 3960 len = decode_nfs4_string(xdr, group_name, GFP_NOIO); 3961 if (len <= 0) 3962 goto out; 3963 dprintk("%s: name=%s\n", __func__, group_name->data); 3964 return NFS_ATTR_FATTR_GROUP_NAME; 3965 } else { 3966 len = xdr_stream_decode_opaque_inline(xdr, (void **)&p, 3967 XDR_MAX_NETOBJ); 3968 if (len <= 0 || nfs_map_group_to_gid(server, p, len, gid) != 0) 3969 goto out; 3970 dprintk("%s: gid=%d\n", __func__, (int)from_kgid(&init_user_ns, *gid)); 3971 return NFS_ATTR_FATTR_GROUP; 3972 } 3973 out: 3974 if (len == -EBADMSG) 3975 return -EIO; 3976 return 0; 3977 } 3978 3979 static int decode_attr_rdev(struct xdr_stream *xdr, uint32_t *bitmap, dev_t *rdev) 3980 { 3981 uint32_t major = 0, minor = 0; 3982 __be32 *p; 3983 int ret = 0; 3984 3985 *rdev = MKDEV(0,0); 3986 if (unlikely(bitmap[1] & (FATTR4_WORD1_RAWDEV - 1U))) 3987 return -EIO; 3988 if (likely(bitmap[1] & FATTR4_WORD1_RAWDEV)) { 3989 dev_t tmp; 3990 3991 p = xdr_inline_decode(xdr, 8); 3992 if (unlikely(!p)) 3993 return -EIO; 3994 major = be32_to_cpup(p++); 3995 minor = be32_to_cpup(p); 3996 tmp = MKDEV(major, minor); 3997 if (MAJOR(tmp) == major && MINOR(tmp) == minor) 3998 *rdev = tmp; 3999 bitmap[1] &= ~ FATTR4_WORD1_RAWDEV; 4000 ret = NFS_ATTR_FATTR_RDEV; 4001 } 4002 dprintk("%s: rdev=(0x%x:0x%x)\n", __func__, major, minor); 4003 return ret; 4004 } 4005 4006 static int decode_attr_space_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 4007 { 4008 __be32 *p; 4009 int status = 0; 4010 4011 *res = 0; 4012 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_AVAIL - 1U))) 4013 return -EIO; 4014 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_AVAIL)) { 4015 p = xdr_inline_decode(xdr, 8); 4016 if (unlikely(!p)) 4017 return -EIO; 4018 xdr_decode_hyper(p, res); 4019 bitmap[1] &= ~FATTR4_WORD1_SPACE_AVAIL; 4020 } 4021 dprintk("%s: space avail=%Lu\n", __func__, (unsigned long long)*res); 4022 return status; 4023 } 4024 4025 static int decode_attr_space_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 4026 { 4027 __be32 *p; 4028 int status = 0; 4029 4030 *res = 0; 4031 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_FREE - 1U))) 4032 return -EIO; 4033 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_FREE)) { 4034 p = xdr_inline_decode(xdr, 8); 4035 if (unlikely(!p)) 4036 return -EIO; 4037 xdr_decode_hyper(p, res); 4038 bitmap[1] &= ~FATTR4_WORD1_SPACE_FREE; 4039 } 4040 dprintk("%s: space free=%Lu\n", __func__, (unsigned long long)*res); 4041 return status; 4042 } 4043 4044 static int decode_attr_space_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 4045 { 4046 __be32 *p; 4047 int status = 0; 4048 4049 *res = 0; 4050 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_TOTAL - 1U))) 4051 return -EIO; 4052 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_TOTAL)) { 4053 p = xdr_inline_decode(xdr, 8); 4054 if (unlikely(!p)) 4055 return -EIO; 4056 xdr_decode_hyper(p, res); 4057 bitmap[1] &= ~FATTR4_WORD1_SPACE_TOTAL; 4058 } 4059 dprintk("%s: space total=%Lu\n", __func__, (unsigned long long)*res); 4060 return status; 4061 } 4062 4063 static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *used) 4064 { 4065 __be32 *p; 4066 int ret = 0; 4067 4068 *used = 0; 4069 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_USED - 1U))) 4070 return -EIO; 4071 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_USED)) { 4072 p = xdr_inline_decode(xdr, 8); 4073 if (unlikely(!p)) 4074 return -EIO; 4075 xdr_decode_hyper(p, used); 4076 bitmap[1] &= ~FATTR4_WORD1_SPACE_USED; 4077 ret = NFS_ATTR_FATTR_SPACE_USED; 4078 } 4079 dprintk("%s: space used=%Lu\n", __func__, 4080 (unsigned long long)*used); 4081 return ret; 4082 } 4083 4084 static __be32 * 4085 xdr_decode_nfstime4(__be32 *p, struct timespec64 *t) 4086 { 4087 __u64 sec; 4088 4089 p = xdr_decode_hyper(p, &sec); 4090 t-> tv_sec = sec; 4091 t->tv_nsec = be32_to_cpup(p++); 4092 return p; 4093 } 4094 4095 static int decode_attr_time(struct xdr_stream *xdr, struct timespec64 *time) 4096 { 4097 __be32 *p; 4098 4099 p = xdr_inline_decode(xdr, nfstime4_maxsz << 2); 4100 if (unlikely(!p)) 4101 return -EIO; 4102 xdr_decode_nfstime4(p, time); 4103 return 0; 4104 } 4105 4106 static int decode_attr_time_access(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec64 *time) 4107 { 4108 int status = 0; 4109 4110 time->tv_sec = 0; 4111 time->tv_nsec = 0; 4112 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_ACCESS - 1U))) 4113 return -EIO; 4114 if (likely(bitmap[1] & FATTR4_WORD1_TIME_ACCESS)) { 4115 status = decode_attr_time(xdr, time); 4116 if (status == 0) 4117 status = NFS_ATTR_FATTR_ATIME; 4118 bitmap[1] &= ~FATTR4_WORD1_TIME_ACCESS; 4119 } 4120 dprintk("%s: atime=%lld\n", __func__, time->tv_sec); 4121 return status; 4122 } 4123 4124 static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec64 *time) 4125 { 4126 int status = 0; 4127 4128 time->tv_sec = 0; 4129 time->tv_nsec = 0; 4130 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_METADATA - 1U))) 4131 return -EIO; 4132 if (likely(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) { 4133 status = decode_attr_time(xdr, time); 4134 if (status == 0) 4135 status = NFS_ATTR_FATTR_CTIME; 4136 bitmap[1] &= ~FATTR4_WORD1_TIME_METADATA; 4137 } 4138 dprintk("%s: ctime=%lld\n", __func__, time->tv_sec); 4139 return status; 4140 } 4141 4142 static int decode_attr_time_delta(struct xdr_stream *xdr, uint32_t *bitmap, 4143 struct timespec64 *time) 4144 { 4145 int status = 0; 4146 4147 time->tv_sec = 0; 4148 time->tv_nsec = 0; 4149 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_DELTA - 1U))) 4150 return -EIO; 4151 if (likely(bitmap[1] & FATTR4_WORD1_TIME_DELTA)) { 4152 status = decode_attr_time(xdr, time); 4153 bitmap[1] &= ~FATTR4_WORD1_TIME_DELTA; 4154 } 4155 dprintk("%s: time_delta=%lld %ld\n", __func__, time->tv_sec, 4156 time->tv_nsec); 4157 return status; 4158 } 4159 4160 static int decode_attr_security_label(struct xdr_stream *xdr, uint32_t *bitmap, 4161 struct nfs4_label *label) 4162 { 4163 uint32_t pi = 0; 4164 uint32_t lfs = 0; 4165 __u32 len; 4166 __be32 *p; 4167 int status = 0; 4168 4169 if (unlikely(bitmap[2] & (FATTR4_WORD2_SECURITY_LABEL - 1U))) 4170 return -EIO; 4171 if (likely(bitmap[2] & FATTR4_WORD2_SECURITY_LABEL)) { 4172 p = xdr_inline_decode(xdr, 4); 4173 if (unlikely(!p)) 4174 return -EIO; 4175 lfs = be32_to_cpup(p++); 4176 p = xdr_inline_decode(xdr, 4); 4177 if (unlikely(!p)) 4178 return -EIO; 4179 pi = be32_to_cpup(p++); 4180 p = xdr_inline_decode(xdr, 4); 4181 if (unlikely(!p)) 4182 return -EIO; 4183 len = be32_to_cpup(p++); 4184 p = xdr_inline_decode(xdr, len); 4185 if (unlikely(!p)) 4186 return -EIO; 4187 if (len < NFS4_MAXLABELLEN) { 4188 if (label) { 4189 if (label->len) { 4190 if (label->len < len) 4191 return -ERANGE; 4192 memcpy(label->label, p, len); 4193 } 4194 label->len = len; 4195 label->pi = pi; 4196 label->lfs = lfs; 4197 status = NFS_ATTR_FATTR_V4_SECURITY_LABEL; 4198 } 4199 bitmap[2] &= ~FATTR4_WORD2_SECURITY_LABEL; 4200 } else 4201 printk(KERN_WARNING "%s: label too long (%u)!\n", 4202 __func__, len); 4203 } 4204 if (label && label->label) 4205 dprintk("%s: label=%s, len=%d, PI=%d, LFS=%d\n", __func__, 4206 (char *)label->label, label->len, label->pi, label->lfs); 4207 return status; 4208 } 4209 4210 static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec64 *time) 4211 { 4212 int status = 0; 4213 4214 time->tv_sec = 0; 4215 time->tv_nsec = 0; 4216 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_MODIFY - 1U))) 4217 return -EIO; 4218 if (likely(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) { 4219 status = decode_attr_time(xdr, time); 4220 if (status == 0) 4221 status = NFS_ATTR_FATTR_MTIME; 4222 bitmap[1] &= ~FATTR4_WORD1_TIME_MODIFY; 4223 } 4224 dprintk("%s: mtime=%lld\n", __func__, time->tv_sec); 4225 return status; 4226 } 4227 4228 static int decode_attr_xattrsupport(struct xdr_stream *xdr, uint32_t *bitmap, 4229 uint32_t *res) 4230 { 4231 __be32 *p; 4232 4233 *res = 0; 4234 if (unlikely(bitmap[2] & (FATTR4_WORD2_XATTR_SUPPORT - 1U))) 4235 return -EIO; 4236 if (likely(bitmap[2] & FATTR4_WORD2_XATTR_SUPPORT)) { 4237 p = xdr_inline_decode(xdr, 4); 4238 if (unlikely(!p)) 4239 return -EIO; 4240 *res = be32_to_cpup(p); 4241 bitmap[2] &= ~FATTR4_WORD2_XATTR_SUPPORT; 4242 } 4243 dprintk("%s: XATTR support=%s\n", __func__, 4244 *res == 0 ? "false" : "true"); 4245 return 0; 4246 } 4247 4248 static int verify_attr_len(struct xdr_stream *xdr, unsigned int savep, uint32_t attrlen) 4249 { 4250 unsigned int attrwords = XDR_QUADLEN(attrlen); 4251 unsigned int nwords = (xdr_stream_pos(xdr) - savep) >> 2; 4252 4253 if (unlikely(attrwords != nwords)) { 4254 dprintk("%s: server returned incorrect attribute length: " 4255 "%u %c %u\n", 4256 __func__, 4257 attrwords << 2, 4258 (attrwords < nwords) ? '<' : '>', 4259 nwords << 2); 4260 return -EIO; 4261 } 4262 return 0; 4263 } 4264 4265 static int decode_change_info(struct xdr_stream *xdr, struct nfs4_change_info *cinfo) 4266 { 4267 __be32 *p; 4268 4269 p = xdr_inline_decode(xdr, 20); 4270 if (unlikely(!p)) 4271 return -EIO; 4272 cinfo->atomic = be32_to_cpup(p++); 4273 p = xdr_decode_hyper(p, &cinfo->before); 4274 xdr_decode_hyper(p, &cinfo->after); 4275 return 0; 4276 } 4277 4278 static int decode_access(struct xdr_stream *xdr, u32 *supported, u32 *access) 4279 { 4280 __be32 *p; 4281 uint32_t supp, acc; 4282 int status; 4283 4284 status = decode_op_hdr(xdr, OP_ACCESS); 4285 if (status) 4286 return status; 4287 p = xdr_inline_decode(xdr, 8); 4288 if (unlikely(!p)) 4289 return -EIO; 4290 supp = be32_to_cpup(p++); 4291 acc = be32_to_cpup(p); 4292 *supported = supp; 4293 *access = acc; 4294 return 0; 4295 } 4296 4297 static int decode_opaque_fixed(struct xdr_stream *xdr, void *buf, size_t len) 4298 { 4299 ssize_t ret = xdr_stream_decode_opaque_fixed(xdr, buf, len); 4300 if (unlikely(ret < 0)) 4301 return -EIO; 4302 return 0; 4303 } 4304 4305 static int decode_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid) 4306 { 4307 return decode_opaque_fixed(xdr, stateid, NFS4_STATEID_SIZE); 4308 } 4309 4310 static int decode_open_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid) 4311 { 4312 stateid->type = NFS4_OPEN_STATEID_TYPE; 4313 return decode_stateid(xdr, stateid); 4314 } 4315 4316 static int decode_lock_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid) 4317 { 4318 stateid->type = NFS4_LOCK_STATEID_TYPE; 4319 return decode_stateid(xdr, stateid); 4320 } 4321 4322 static int decode_delegation_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid) 4323 { 4324 stateid->type = NFS4_DELEGATION_STATEID_TYPE; 4325 return decode_stateid(xdr, stateid); 4326 } 4327 4328 static int decode_invalid_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid) 4329 { 4330 nfs4_stateid dummy; 4331 4332 nfs4_stateid_copy(stateid, &invalid_stateid); 4333 return decode_stateid(xdr, &dummy); 4334 } 4335 4336 static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res) 4337 { 4338 int status; 4339 4340 status = decode_op_hdr(xdr, OP_CLOSE); 4341 if (status != -EIO) 4342 nfs_increment_open_seqid(status, res->seqid); 4343 if (!status) 4344 status = decode_invalid_stateid(xdr, &res->stateid); 4345 return status; 4346 } 4347 4348 static int decode_verifier(struct xdr_stream *xdr, void *verifier) 4349 { 4350 return decode_opaque_fixed(xdr, verifier, NFS4_VERIFIER_SIZE); 4351 } 4352 4353 static int decode_write_verifier(struct xdr_stream *xdr, struct nfs_write_verifier *verifier) 4354 { 4355 return decode_opaque_fixed(xdr, verifier->data, NFS4_VERIFIER_SIZE); 4356 } 4357 4358 static int decode_commit(struct xdr_stream *xdr, struct nfs_commitres *res) 4359 { 4360 struct nfs_writeverf *verf = res->verf; 4361 int status; 4362 4363 status = decode_op_hdr(xdr, OP_COMMIT); 4364 if (!status) 4365 status = decode_write_verifier(xdr, &verf->verifier); 4366 if (!status) 4367 verf->committed = NFS_FILE_SYNC; 4368 return status; 4369 } 4370 4371 static int decode_create(struct xdr_stream *xdr, struct nfs4_change_info *cinfo) 4372 { 4373 __be32 *p; 4374 uint32_t bmlen; 4375 int status; 4376 4377 status = decode_op_hdr(xdr, OP_CREATE); 4378 if (status) 4379 return status; 4380 if ((status = decode_change_info(xdr, cinfo))) 4381 return status; 4382 p = xdr_inline_decode(xdr, 4); 4383 if (unlikely(!p)) 4384 return -EIO; 4385 bmlen = be32_to_cpup(p); 4386 p = xdr_inline_decode(xdr, bmlen << 2); 4387 if (likely(p)) 4388 return 0; 4389 return -EIO; 4390 } 4391 4392 static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_res *res) 4393 { 4394 unsigned int savep; 4395 uint32_t attrlen, bitmap[3] = {0}; 4396 int status; 4397 4398 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) 4399 goto xdr_error; 4400 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) 4401 goto xdr_error; 4402 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) 4403 goto xdr_error; 4404 if ((status = decode_attr_supported(xdr, bitmap, res->attr_bitmask)) != 0) 4405 goto xdr_error; 4406 if ((status = decode_attr_fh_expire_type(xdr, bitmap, 4407 &res->fh_expire_type)) != 0) 4408 goto xdr_error; 4409 if ((status = decode_attr_link_support(xdr, bitmap, &res->has_links)) != 0) 4410 goto xdr_error; 4411 if ((status = decode_attr_symlink_support(xdr, bitmap, &res->has_symlinks)) != 0) 4412 goto xdr_error; 4413 if ((status = decode_attr_aclsupport(xdr, bitmap, &res->acl_bitmask)) != 0) 4414 goto xdr_error; 4415 if ((status = decode_attr_exclcreat_supported(xdr, bitmap, 4416 res->exclcreat_bitmask)) != 0) 4417 goto xdr_error; 4418 status = verify_attr_len(xdr, savep, attrlen); 4419 xdr_error: 4420 dprintk("%s: xdr returned %d!\n", __func__, -status); 4421 return status; 4422 } 4423 4424 static int decode_statfs(struct xdr_stream *xdr, struct nfs_fsstat *fsstat) 4425 { 4426 unsigned int savep; 4427 uint32_t attrlen, bitmap[3] = {0}; 4428 int status; 4429 4430 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) 4431 goto xdr_error; 4432 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) 4433 goto xdr_error; 4434 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) 4435 goto xdr_error; 4436 4437 if ((status = decode_attr_files_avail(xdr, bitmap, &fsstat->afiles)) != 0) 4438 goto xdr_error; 4439 if ((status = decode_attr_files_free(xdr, bitmap, &fsstat->ffiles)) != 0) 4440 goto xdr_error; 4441 if ((status = decode_attr_files_total(xdr, bitmap, &fsstat->tfiles)) != 0) 4442 goto xdr_error; 4443 4444 status = -EIO; 4445 if (unlikely(bitmap[0])) 4446 goto xdr_error; 4447 4448 if ((status = decode_attr_space_avail(xdr, bitmap, &fsstat->abytes)) != 0) 4449 goto xdr_error; 4450 if ((status = decode_attr_space_free(xdr, bitmap, &fsstat->fbytes)) != 0) 4451 goto xdr_error; 4452 if ((status = decode_attr_space_total(xdr, bitmap, &fsstat->tbytes)) != 0) 4453 goto xdr_error; 4454 4455 status = verify_attr_len(xdr, savep, attrlen); 4456 xdr_error: 4457 dprintk("%s: xdr returned %d!\n", __func__, -status); 4458 return status; 4459 } 4460 4461 static int decode_pathconf(struct xdr_stream *xdr, struct nfs_pathconf *pathconf) 4462 { 4463 unsigned int savep; 4464 uint32_t attrlen, bitmap[3] = {0}; 4465 int status; 4466 4467 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) 4468 goto xdr_error; 4469 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) 4470 goto xdr_error; 4471 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) 4472 goto xdr_error; 4473 4474 if ((status = decode_attr_maxlink(xdr, bitmap, &pathconf->max_link)) != 0) 4475 goto xdr_error; 4476 if ((status = decode_attr_maxname(xdr, bitmap, &pathconf->max_namelen)) != 0) 4477 goto xdr_error; 4478 4479 status = verify_attr_len(xdr, savep, attrlen); 4480 xdr_error: 4481 dprintk("%s: xdr returned %d!\n", __func__, -status); 4482 return status; 4483 } 4484 4485 static int decode_threshold_hint(struct xdr_stream *xdr, 4486 uint32_t *bitmap, 4487 uint64_t *res, 4488 uint32_t hint_bit) 4489 { 4490 __be32 *p; 4491 4492 *res = 0; 4493 if (likely(bitmap[0] & hint_bit)) { 4494 p = xdr_inline_decode(xdr, 8); 4495 if (unlikely(!p)) 4496 return -EIO; 4497 xdr_decode_hyper(p, res); 4498 } 4499 return 0; 4500 } 4501 4502 static int decode_first_threshold_item4(struct xdr_stream *xdr, 4503 struct nfs4_threshold *res) 4504 { 4505 __be32 *p; 4506 unsigned int savep; 4507 uint32_t bitmap[3] = {0,}, attrlen; 4508 int status; 4509 4510 /* layout type */ 4511 p = xdr_inline_decode(xdr, 4); 4512 if (unlikely(!p)) 4513 return -EIO; 4514 res->l_type = be32_to_cpup(p); 4515 4516 /* thi_hintset bitmap */ 4517 status = decode_attr_bitmap(xdr, bitmap); 4518 if (status < 0) 4519 goto xdr_error; 4520 4521 /* thi_hintlist length */ 4522 status = decode_attr_length(xdr, &attrlen, &savep); 4523 if (status < 0) 4524 goto xdr_error; 4525 /* thi_hintlist */ 4526 status = decode_threshold_hint(xdr, bitmap, &res->rd_sz, THRESHOLD_RD); 4527 if (status < 0) 4528 goto xdr_error; 4529 status = decode_threshold_hint(xdr, bitmap, &res->wr_sz, THRESHOLD_WR); 4530 if (status < 0) 4531 goto xdr_error; 4532 status = decode_threshold_hint(xdr, bitmap, &res->rd_io_sz, 4533 THRESHOLD_RD_IO); 4534 if (status < 0) 4535 goto xdr_error; 4536 status = decode_threshold_hint(xdr, bitmap, &res->wr_io_sz, 4537 THRESHOLD_WR_IO); 4538 if (status < 0) 4539 goto xdr_error; 4540 4541 status = verify_attr_len(xdr, savep, attrlen); 4542 res->bm = bitmap[0]; 4543 4544 dprintk("%s bm=0x%x rd_sz=%llu wr_sz=%llu rd_io=%llu wr_io=%llu\n", 4545 __func__, res->bm, res->rd_sz, res->wr_sz, res->rd_io_sz, 4546 res->wr_io_sz); 4547 xdr_error: 4548 dprintk("%s ret=%d!\n", __func__, status); 4549 return status; 4550 } 4551 4552 /* 4553 * Thresholds on pNFS direct I/O vrs MDS I/O 4554 */ 4555 static int decode_attr_mdsthreshold(struct xdr_stream *xdr, 4556 uint32_t *bitmap, 4557 struct nfs4_threshold *res) 4558 { 4559 __be32 *p; 4560 int status = 0; 4561 uint32_t num; 4562 4563 if (unlikely(bitmap[2] & (FATTR4_WORD2_MDSTHRESHOLD - 1U))) 4564 return -EIO; 4565 if (bitmap[2] & FATTR4_WORD2_MDSTHRESHOLD) { 4566 /* Did the server return an unrequested attribute? */ 4567 if (unlikely(res == NULL)) 4568 return -EREMOTEIO; 4569 p = xdr_inline_decode(xdr, 4); 4570 if (unlikely(!p)) 4571 return -EIO; 4572 num = be32_to_cpup(p); 4573 if (num == 0) 4574 return 0; 4575 if (num > 1) 4576 printk(KERN_INFO "%s: Warning: Multiple pNFS layout " 4577 "drivers per filesystem not supported\n", 4578 __func__); 4579 4580 status = decode_first_threshold_item4(xdr, res); 4581 bitmap[2] &= ~FATTR4_WORD2_MDSTHRESHOLD; 4582 } 4583 return status; 4584 } 4585 4586 static int decode_getfattr_attrs(struct xdr_stream *xdr, uint32_t *bitmap, 4587 struct nfs_fattr *fattr, struct nfs_fh *fh, 4588 struct nfs4_fs_locations *fs_loc, struct nfs4_label *label, 4589 const struct nfs_server *server) 4590 { 4591 int status; 4592 umode_t fmode = 0; 4593 uint32_t type; 4594 int32_t err; 4595 4596 status = decode_attr_type(xdr, bitmap, &type); 4597 if (status < 0) 4598 goto xdr_error; 4599 fattr->mode = 0; 4600 if (status != 0) { 4601 fattr->mode |= nfs_type2fmt[type]; 4602 fattr->valid |= status; 4603 } 4604 4605 status = decode_attr_change(xdr, bitmap, &fattr->change_attr); 4606 if (status < 0) 4607 goto xdr_error; 4608 fattr->valid |= status; 4609 4610 status = decode_attr_size(xdr, bitmap, &fattr->size); 4611 if (status < 0) 4612 goto xdr_error; 4613 fattr->valid |= status; 4614 4615 status = decode_attr_fsid(xdr, bitmap, &fattr->fsid); 4616 if (status < 0) 4617 goto xdr_error; 4618 fattr->valid |= status; 4619 4620 err = 0; 4621 status = decode_attr_error(xdr, bitmap, &err); 4622 if (status < 0) 4623 goto xdr_error; 4624 4625 status = decode_attr_filehandle(xdr, bitmap, fh); 4626 if (status < 0) 4627 goto xdr_error; 4628 4629 status = decode_attr_fileid(xdr, bitmap, &fattr->fileid); 4630 if (status < 0) 4631 goto xdr_error; 4632 fattr->valid |= status; 4633 4634 status = decode_attr_fs_locations(xdr, bitmap, fs_loc); 4635 if (status < 0) 4636 goto xdr_error; 4637 fattr->valid |= status; 4638 4639 status = -EIO; 4640 if (unlikely(bitmap[0])) 4641 goto xdr_error; 4642 4643 status = decode_attr_mode(xdr, bitmap, &fmode); 4644 if (status < 0) 4645 goto xdr_error; 4646 if (status != 0) { 4647 fattr->mode |= fmode; 4648 fattr->valid |= status; 4649 } 4650 4651 status = decode_attr_nlink(xdr, bitmap, &fattr->nlink); 4652 if (status < 0) 4653 goto xdr_error; 4654 fattr->valid |= status; 4655 4656 status = decode_attr_owner(xdr, bitmap, server, &fattr->uid, fattr->owner_name); 4657 if (status < 0) 4658 goto xdr_error; 4659 fattr->valid |= status; 4660 4661 status = decode_attr_group(xdr, bitmap, server, &fattr->gid, fattr->group_name); 4662 if (status < 0) 4663 goto xdr_error; 4664 fattr->valid |= status; 4665 4666 status = decode_attr_rdev(xdr, bitmap, &fattr->rdev); 4667 if (status < 0) 4668 goto xdr_error; 4669 fattr->valid |= status; 4670 4671 status = decode_attr_space_used(xdr, bitmap, &fattr->du.nfs3.used); 4672 if (status < 0) 4673 goto xdr_error; 4674 fattr->valid |= status; 4675 4676 status = decode_attr_time_access(xdr, bitmap, &fattr->atime); 4677 if (status < 0) 4678 goto xdr_error; 4679 fattr->valid |= status; 4680 4681 status = decode_attr_time_metadata(xdr, bitmap, &fattr->ctime); 4682 if (status < 0) 4683 goto xdr_error; 4684 fattr->valid |= status; 4685 4686 status = decode_attr_time_modify(xdr, bitmap, &fattr->mtime); 4687 if (status < 0) 4688 goto xdr_error; 4689 fattr->valid |= status; 4690 4691 status = decode_attr_mounted_on_fileid(xdr, bitmap, &fattr->mounted_on_fileid); 4692 if (status < 0) 4693 goto xdr_error; 4694 fattr->valid |= status; 4695 4696 status = -EIO; 4697 if (unlikely(bitmap[1])) 4698 goto xdr_error; 4699 4700 status = decode_attr_mdsthreshold(xdr, bitmap, fattr->mdsthreshold); 4701 if (status < 0) 4702 goto xdr_error; 4703 4704 if (label) { 4705 status = decode_attr_security_label(xdr, bitmap, label); 4706 if (status < 0) 4707 goto xdr_error; 4708 fattr->valid |= status; 4709 } 4710 4711 xdr_error: 4712 dprintk("%s: xdr returned %d\n", __func__, -status); 4713 return status; 4714 } 4715 4716 static int decode_getfattr_generic(struct xdr_stream *xdr, struct nfs_fattr *fattr, 4717 struct nfs_fh *fh, struct nfs4_fs_locations *fs_loc, 4718 struct nfs4_label *label, const struct nfs_server *server) 4719 { 4720 unsigned int savep; 4721 uint32_t attrlen, 4722 bitmap[3] = {0}; 4723 int status; 4724 4725 status = decode_op_hdr(xdr, OP_GETATTR); 4726 if (status < 0) 4727 goto xdr_error; 4728 4729 status = decode_attr_bitmap(xdr, bitmap); 4730 if (status < 0) 4731 goto xdr_error; 4732 4733 status = decode_attr_length(xdr, &attrlen, &savep); 4734 if (status < 0) 4735 goto xdr_error; 4736 4737 status = decode_getfattr_attrs(xdr, bitmap, fattr, fh, fs_loc, 4738 label, server); 4739 if (status < 0) 4740 goto xdr_error; 4741 4742 status = verify_attr_len(xdr, savep, attrlen); 4743 xdr_error: 4744 dprintk("%s: xdr returned %d\n", __func__, -status); 4745 return status; 4746 } 4747 4748 static int decode_getfattr_label(struct xdr_stream *xdr, struct nfs_fattr *fattr, 4749 struct nfs4_label *label, const struct nfs_server *server) 4750 { 4751 return decode_getfattr_generic(xdr, fattr, NULL, NULL, label, server); 4752 } 4753 4754 static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr, 4755 const struct nfs_server *server) 4756 { 4757 return decode_getfattr_generic(xdr, fattr, NULL, NULL, NULL, server); 4758 } 4759 4760 /* 4761 * Decode potentially multiple layout types. 4762 */ 4763 static int decode_pnfs_layout_types(struct xdr_stream *xdr, 4764 struct nfs_fsinfo *fsinfo) 4765 { 4766 __be32 *p; 4767 uint32_t i; 4768 4769 p = xdr_inline_decode(xdr, 4); 4770 if (unlikely(!p)) 4771 return -EIO; 4772 fsinfo->nlayouttypes = be32_to_cpup(p); 4773 4774 /* pNFS is not supported by the underlying file system */ 4775 if (fsinfo->nlayouttypes == 0) 4776 return 0; 4777 4778 /* Decode and set first layout type, move xdr->p past unused types */ 4779 p = xdr_inline_decode(xdr, fsinfo->nlayouttypes * 4); 4780 if (unlikely(!p)) 4781 return -EIO; 4782 4783 /* If we get too many, then just cap it at the max */ 4784 if (fsinfo->nlayouttypes > NFS_MAX_LAYOUT_TYPES) { 4785 printk(KERN_INFO "NFS: %s: Warning: Too many (%u) pNFS layout types\n", 4786 __func__, fsinfo->nlayouttypes); 4787 fsinfo->nlayouttypes = NFS_MAX_LAYOUT_TYPES; 4788 } 4789 4790 for(i = 0; i < fsinfo->nlayouttypes; ++i) 4791 fsinfo->layouttype[i] = be32_to_cpup(p++); 4792 return 0; 4793 } 4794 4795 /* 4796 * The type of file system exported. 4797 * Note we must ensure that layouttype is set in any non-error case. 4798 */ 4799 static int decode_attr_pnfstype(struct xdr_stream *xdr, uint32_t *bitmap, 4800 struct nfs_fsinfo *fsinfo) 4801 { 4802 int status = 0; 4803 4804 dprintk("%s: bitmap is %x\n", __func__, bitmap[1]); 4805 if (unlikely(bitmap[1] & (FATTR4_WORD1_FS_LAYOUT_TYPES - 1U))) 4806 return -EIO; 4807 if (bitmap[1] & FATTR4_WORD1_FS_LAYOUT_TYPES) { 4808 status = decode_pnfs_layout_types(xdr, fsinfo); 4809 bitmap[1] &= ~FATTR4_WORD1_FS_LAYOUT_TYPES; 4810 } 4811 return status; 4812 } 4813 4814 /* 4815 * The prefered block size for layout directed io 4816 */ 4817 static int decode_attr_layout_blksize(struct xdr_stream *xdr, uint32_t *bitmap, 4818 uint32_t *res) 4819 { 4820 __be32 *p; 4821 4822 dprintk("%s: bitmap is %x\n", __func__, bitmap[2]); 4823 *res = 0; 4824 if (bitmap[2] & FATTR4_WORD2_LAYOUT_BLKSIZE) { 4825 p = xdr_inline_decode(xdr, 4); 4826 if (unlikely(!p)) 4827 return -EIO; 4828 *res = be32_to_cpup(p); 4829 bitmap[2] &= ~FATTR4_WORD2_LAYOUT_BLKSIZE; 4830 } 4831 return 0; 4832 } 4833 4834 /* 4835 * The granularity of a CLONE operation. 4836 */ 4837 static int decode_attr_clone_blksize(struct xdr_stream *xdr, uint32_t *bitmap, 4838 uint32_t *res) 4839 { 4840 __be32 *p; 4841 4842 dprintk("%s: bitmap is %x\n", __func__, bitmap[2]); 4843 *res = 0; 4844 if (bitmap[2] & FATTR4_WORD2_CLONE_BLKSIZE) { 4845 p = xdr_inline_decode(xdr, 4); 4846 if (unlikely(!p)) 4847 return -EIO; 4848 *res = be32_to_cpup(p); 4849 bitmap[2] &= ~FATTR4_WORD2_CLONE_BLKSIZE; 4850 } 4851 return 0; 4852 } 4853 4854 static int decode_attr_change_attr_type(struct xdr_stream *xdr, 4855 uint32_t *bitmap, 4856 enum nfs4_change_attr_type *res) 4857 { 4858 u32 tmp = NFS4_CHANGE_TYPE_IS_UNDEFINED; 4859 4860 dprintk("%s: bitmap is %x\n", __func__, bitmap[2]); 4861 if (bitmap[2] & FATTR4_WORD2_CHANGE_ATTR_TYPE) { 4862 if (xdr_stream_decode_u32(xdr, &tmp)) 4863 return -EIO; 4864 bitmap[2] &= ~FATTR4_WORD2_CHANGE_ATTR_TYPE; 4865 } 4866 4867 switch(tmp) { 4868 case NFS4_CHANGE_TYPE_IS_MONOTONIC_INCR: 4869 case NFS4_CHANGE_TYPE_IS_VERSION_COUNTER: 4870 case NFS4_CHANGE_TYPE_IS_VERSION_COUNTER_NOPNFS: 4871 case NFS4_CHANGE_TYPE_IS_TIME_METADATA: 4872 *res = tmp; 4873 break; 4874 default: 4875 *res = NFS4_CHANGE_TYPE_IS_UNDEFINED; 4876 } 4877 return 0; 4878 } 4879 4880 static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo) 4881 { 4882 unsigned int savep; 4883 uint32_t attrlen, bitmap[3]; 4884 int status; 4885 4886 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) 4887 goto xdr_error; 4888 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) 4889 goto xdr_error; 4890 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) 4891 goto xdr_error; 4892 4893 fsinfo->rtmult = fsinfo->wtmult = 512; /* ??? */ 4894 4895 if ((status = decode_attr_lease_time(xdr, bitmap, &fsinfo->lease_time)) != 0) 4896 goto xdr_error; 4897 if ((status = decode_attr_maxfilesize(xdr, bitmap, &fsinfo->maxfilesize)) != 0) 4898 goto xdr_error; 4899 if ((status = decode_attr_maxread(xdr, bitmap, &fsinfo->rtmax)) != 0) 4900 goto xdr_error; 4901 fsinfo->rtpref = fsinfo->dtpref = fsinfo->rtmax; 4902 if ((status = decode_attr_maxwrite(xdr, bitmap, &fsinfo->wtmax)) != 0) 4903 goto xdr_error; 4904 fsinfo->wtpref = fsinfo->wtmax; 4905 4906 status = -EIO; 4907 if (unlikely(bitmap[0])) 4908 goto xdr_error; 4909 4910 status = decode_attr_time_delta(xdr, bitmap, &fsinfo->time_delta); 4911 if (status != 0) 4912 goto xdr_error; 4913 status = decode_attr_pnfstype(xdr, bitmap, fsinfo); 4914 if (status != 0) 4915 goto xdr_error; 4916 4917 status = -EIO; 4918 if (unlikely(bitmap[1])) 4919 goto xdr_error; 4920 4921 status = decode_attr_layout_blksize(xdr, bitmap, &fsinfo->blksize); 4922 if (status) 4923 goto xdr_error; 4924 status = decode_attr_clone_blksize(xdr, bitmap, &fsinfo->clone_blksize); 4925 if (status) 4926 goto xdr_error; 4927 4928 status = decode_attr_change_attr_type(xdr, bitmap, 4929 &fsinfo->change_attr_type); 4930 if (status) 4931 goto xdr_error; 4932 4933 status = decode_attr_xattrsupport(xdr, bitmap, 4934 &fsinfo->xattr_support); 4935 if (status) 4936 goto xdr_error; 4937 4938 status = verify_attr_len(xdr, savep, attrlen); 4939 xdr_error: 4940 dprintk("%s: xdr returned %d!\n", __func__, -status); 4941 return status; 4942 } 4943 4944 static int decode_getfh(struct xdr_stream *xdr, struct nfs_fh *fh) 4945 { 4946 __be32 *p; 4947 uint32_t len; 4948 int status; 4949 4950 /* Zero handle first to allow comparisons */ 4951 memset(fh, 0, sizeof(*fh)); 4952 4953 status = decode_op_hdr(xdr, OP_GETFH); 4954 if (status) 4955 return status; 4956 4957 p = xdr_inline_decode(xdr, 4); 4958 if (unlikely(!p)) 4959 return -EIO; 4960 len = be32_to_cpup(p); 4961 if (len > NFS4_FHSIZE || len == 0) { 4962 trace_nfs4_xdr_bad_filehandle(xdr, OP_GETFH, NFS4ERR_BADHANDLE); 4963 return -EREMOTEIO; 4964 } 4965 fh->size = len; 4966 p = xdr_inline_decode(xdr, len); 4967 if (unlikely(!p)) 4968 return -EIO; 4969 memcpy(fh->data, p, len); 4970 return 0; 4971 } 4972 4973 static int decode_link(struct xdr_stream *xdr, struct nfs4_change_info *cinfo) 4974 { 4975 int status; 4976 4977 status = decode_op_hdr(xdr, OP_LINK); 4978 if (status) 4979 return status; 4980 return decode_change_info(xdr, cinfo); 4981 } 4982 4983 /* 4984 * We create the owner, so we know a proper owner.id length is 4. 4985 */ 4986 static int decode_lock_denied (struct xdr_stream *xdr, struct file_lock *fl) 4987 { 4988 uint64_t offset, length, clientid; 4989 __be32 *p; 4990 uint32_t namelen, type; 4991 4992 p = xdr_inline_decode(xdr, 32); /* read 32 bytes */ 4993 if (unlikely(!p)) 4994 return -EIO; 4995 p = xdr_decode_hyper(p, &offset); /* read 2 8-byte long words */ 4996 p = xdr_decode_hyper(p, &length); 4997 type = be32_to_cpup(p++); /* 4 byte read */ 4998 if (fl != NULL) { /* manipulate file lock */ 4999 fl->fl_start = (loff_t)offset; 5000 fl->fl_end = fl->fl_start + (loff_t)length - 1; 5001 if (length == ~(uint64_t)0) 5002 fl->fl_end = OFFSET_MAX; 5003 fl->fl_type = F_WRLCK; 5004 if (type & 1) 5005 fl->fl_type = F_RDLCK; 5006 fl->fl_pid = 0; 5007 } 5008 p = xdr_decode_hyper(p, &clientid); /* read 8 bytes */ 5009 namelen = be32_to_cpup(p); /* read 4 bytes */ /* have read all 32 bytes now */ 5010 p = xdr_inline_decode(xdr, namelen); /* variable size field */ 5011 if (likely(!p)) 5012 return -EIO; 5013 return -NFS4ERR_DENIED; 5014 } 5015 5016 static int decode_lock(struct xdr_stream *xdr, struct nfs_lock_res *res) 5017 { 5018 int status; 5019 5020 status = decode_op_hdr(xdr, OP_LOCK); 5021 if (status == -EIO) 5022 goto out; 5023 if (status == 0) { 5024 status = decode_lock_stateid(xdr, &res->stateid); 5025 if (unlikely(status)) 5026 goto out; 5027 } else if (status == -NFS4ERR_DENIED) 5028 status = decode_lock_denied(xdr, NULL); 5029 if (res->open_seqid != NULL) 5030 nfs_increment_open_seqid(status, res->open_seqid); 5031 nfs_increment_lock_seqid(status, res->lock_seqid); 5032 out: 5033 return status; 5034 } 5035 5036 static int decode_lockt(struct xdr_stream *xdr, struct nfs_lockt_res *res) 5037 { 5038 int status; 5039 status = decode_op_hdr(xdr, OP_LOCKT); 5040 if (status == -NFS4ERR_DENIED) 5041 return decode_lock_denied(xdr, res->denied); 5042 return status; 5043 } 5044 5045 static int decode_locku(struct xdr_stream *xdr, struct nfs_locku_res *res) 5046 { 5047 int status; 5048 5049 status = decode_op_hdr(xdr, OP_LOCKU); 5050 if (status != -EIO) 5051 nfs_increment_lock_seqid(status, res->seqid); 5052 if (status == 0) 5053 status = decode_lock_stateid(xdr, &res->stateid); 5054 return status; 5055 } 5056 5057 static int decode_release_lockowner(struct xdr_stream *xdr) 5058 { 5059 return decode_op_hdr(xdr, OP_RELEASE_LOCKOWNER); 5060 } 5061 5062 static int decode_lookup(struct xdr_stream *xdr) 5063 { 5064 return decode_op_hdr(xdr, OP_LOOKUP); 5065 } 5066 5067 static int decode_lookupp(struct xdr_stream *xdr) 5068 { 5069 return decode_op_hdr(xdr, OP_LOOKUPP); 5070 } 5071 5072 /* This is too sick! */ 5073 static int decode_space_limit(struct xdr_stream *xdr, 5074 unsigned long *pagemod_limit) 5075 { 5076 __be32 *p; 5077 uint32_t limit_type, nblocks, blocksize; 5078 u64 maxsize = 0; 5079 5080 p = xdr_inline_decode(xdr, 12); 5081 if (unlikely(!p)) 5082 return -EIO; 5083 limit_type = be32_to_cpup(p++); 5084 switch (limit_type) { 5085 case NFS4_LIMIT_SIZE: 5086 xdr_decode_hyper(p, &maxsize); 5087 break; 5088 case NFS4_LIMIT_BLOCKS: 5089 nblocks = be32_to_cpup(p++); 5090 blocksize = be32_to_cpup(p); 5091 maxsize = (uint64_t)nblocks * (uint64_t)blocksize; 5092 } 5093 maxsize >>= PAGE_SHIFT; 5094 *pagemod_limit = min_t(u64, maxsize, ULONG_MAX); 5095 return 0; 5096 } 5097 5098 static int decode_rw_delegation(struct xdr_stream *xdr, 5099 uint32_t delegation_type, 5100 struct nfs_openres *res) 5101 { 5102 __be32 *p; 5103 int status; 5104 5105 status = decode_delegation_stateid(xdr, &res->delegation); 5106 if (unlikely(status)) 5107 return status; 5108 p = xdr_inline_decode(xdr, 4); 5109 if (unlikely(!p)) 5110 return -EIO; 5111 res->do_recall = be32_to_cpup(p); 5112 5113 switch (delegation_type) { 5114 case NFS4_OPEN_DELEGATE_READ: 5115 res->delegation_type = FMODE_READ; 5116 break; 5117 case NFS4_OPEN_DELEGATE_WRITE: 5118 res->delegation_type = FMODE_WRITE|FMODE_READ; 5119 if (decode_space_limit(xdr, &res->pagemod_limit) < 0) 5120 return -EIO; 5121 } 5122 return decode_ace(xdr, NULL); 5123 } 5124 5125 static int decode_no_delegation(struct xdr_stream *xdr, struct nfs_openres *res) 5126 { 5127 __be32 *p; 5128 uint32_t why_no_delegation; 5129 5130 p = xdr_inline_decode(xdr, 4); 5131 if (unlikely(!p)) 5132 return -EIO; 5133 why_no_delegation = be32_to_cpup(p); 5134 switch (why_no_delegation) { 5135 case WND4_CONTENTION: 5136 case WND4_RESOURCE: 5137 xdr_inline_decode(xdr, 4); 5138 /* Ignore for now */ 5139 } 5140 return 0; 5141 } 5142 5143 static int decode_delegation(struct xdr_stream *xdr, struct nfs_openres *res) 5144 { 5145 __be32 *p; 5146 uint32_t delegation_type; 5147 5148 p = xdr_inline_decode(xdr, 4); 5149 if (unlikely(!p)) 5150 return -EIO; 5151 delegation_type = be32_to_cpup(p); 5152 res->delegation_type = 0; 5153 switch (delegation_type) { 5154 case NFS4_OPEN_DELEGATE_NONE: 5155 return 0; 5156 case NFS4_OPEN_DELEGATE_READ: 5157 case NFS4_OPEN_DELEGATE_WRITE: 5158 return decode_rw_delegation(xdr, delegation_type, res); 5159 case NFS4_OPEN_DELEGATE_NONE_EXT: 5160 return decode_no_delegation(xdr, res); 5161 } 5162 return -EIO; 5163 } 5164 5165 static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res) 5166 { 5167 __be32 *p; 5168 uint32_t savewords, bmlen, i; 5169 int status; 5170 5171 if (!__decode_op_hdr(xdr, OP_OPEN, &status)) 5172 return status; 5173 nfs_increment_open_seqid(status, res->seqid); 5174 if (status) 5175 return status; 5176 status = decode_open_stateid(xdr, &res->stateid); 5177 if (unlikely(status)) 5178 return status; 5179 5180 decode_change_info(xdr, &res->cinfo); 5181 5182 p = xdr_inline_decode(xdr, 8); 5183 if (unlikely(!p)) 5184 return -EIO; 5185 res->rflags = be32_to_cpup(p++); 5186 bmlen = be32_to_cpup(p); 5187 if (bmlen > 10) 5188 goto xdr_error; 5189 5190 p = xdr_inline_decode(xdr, bmlen << 2); 5191 if (unlikely(!p)) 5192 return -EIO; 5193 savewords = min_t(uint32_t, bmlen, NFS4_BITMAP_SIZE); 5194 for (i = 0; i < savewords; ++i) 5195 res->attrset[i] = be32_to_cpup(p++); 5196 for (; i < NFS4_BITMAP_SIZE; i++) 5197 res->attrset[i] = 0; 5198 5199 return decode_delegation(xdr, res); 5200 xdr_error: 5201 dprintk("%s: Bitmap too large! Length = %u\n", __func__, bmlen); 5202 return -EIO; 5203 } 5204 5205 static int decode_open_confirm(struct xdr_stream *xdr, struct nfs_open_confirmres *res) 5206 { 5207 int status; 5208 5209 status = decode_op_hdr(xdr, OP_OPEN_CONFIRM); 5210 if (status != -EIO) 5211 nfs_increment_open_seqid(status, res->seqid); 5212 if (!status) 5213 status = decode_open_stateid(xdr, &res->stateid); 5214 return status; 5215 } 5216 5217 static int decode_open_downgrade(struct xdr_stream *xdr, struct nfs_closeres *res) 5218 { 5219 int status; 5220 5221 status = decode_op_hdr(xdr, OP_OPEN_DOWNGRADE); 5222 if (status != -EIO) 5223 nfs_increment_open_seqid(status, res->seqid); 5224 if (!status) 5225 status = decode_open_stateid(xdr, &res->stateid); 5226 return status; 5227 } 5228 5229 static int decode_putfh(struct xdr_stream *xdr) 5230 { 5231 return decode_op_hdr(xdr, OP_PUTFH); 5232 } 5233 5234 static int decode_putrootfh(struct xdr_stream *xdr) 5235 { 5236 return decode_op_hdr(xdr, OP_PUTROOTFH); 5237 } 5238 5239 static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req, 5240 struct nfs_pgio_res *res) 5241 { 5242 __be32 *p; 5243 uint32_t count, eof, recvd; 5244 int status; 5245 5246 status = decode_op_hdr(xdr, OP_READ); 5247 if (status) 5248 return status; 5249 p = xdr_inline_decode(xdr, 8); 5250 if (unlikely(!p)) 5251 return -EIO; 5252 eof = be32_to_cpup(p++); 5253 count = be32_to_cpup(p); 5254 recvd = xdr_read_pages(xdr, count); 5255 if (count > recvd) { 5256 dprintk("NFS: server cheating in read reply: " 5257 "count %u > recvd %u\n", count, recvd); 5258 count = recvd; 5259 eof = 0; 5260 } 5261 res->eof = eof; 5262 res->count = count; 5263 return 0; 5264 } 5265 5266 static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs4_readdir_res *readdir) 5267 { 5268 int status; 5269 __be32 verf[2]; 5270 5271 status = decode_op_hdr(xdr, OP_READDIR); 5272 if (!status) 5273 status = decode_verifier(xdr, readdir->verifier.data); 5274 if (unlikely(status)) 5275 return status; 5276 memcpy(verf, readdir->verifier.data, sizeof(verf)); 5277 dprintk("%s: verifier = %08x:%08x\n", 5278 __func__, verf[0], verf[1]); 5279 return xdr_read_pages(xdr, xdr->buf->page_len); 5280 } 5281 5282 static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req) 5283 { 5284 struct xdr_buf *rcvbuf = &req->rq_rcv_buf; 5285 u32 len, recvd; 5286 __be32 *p; 5287 int status; 5288 5289 status = decode_op_hdr(xdr, OP_READLINK); 5290 if (status) 5291 return status; 5292 5293 /* Convert length of symlink */ 5294 p = xdr_inline_decode(xdr, 4); 5295 if (unlikely(!p)) 5296 return -EIO; 5297 len = be32_to_cpup(p); 5298 if (len >= rcvbuf->page_len || len <= 0) { 5299 dprintk("nfs: server returned giant symlink!\n"); 5300 return -ENAMETOOLONG; 5301 } 5302 recvd = xdr_read_pages(xdr, len); 5303 if (recvd < len) { 5304 dprintk("NFS: server cheating in readlink reply: " 5305 "count %u > recvd %u\n", len, recvd); 5306 return -EIO; 5307 } 5308 /* 5309 * The XDR encode routine has set things up so that 5310 * the link text will be copied directly into the 5311 * buffer. We just have to do overflow-checking, 5312 * and null-terminate the text (the VFS expects 5313 * null-termination). 5314 */ 5315 xdr_terminate_string(rcvbuf, len); 5316 return 0; 5317 } 5318 5319 static int decode_remove(struct xdr_stream *xdr, struct nfs4_change_info *cinfo) 5320 { 5321 int status; 5322 5323 status = decode_op_hdr(xdr, OP_REMOVE); 5324 if (status) 5325 goto out; 5326 status = decode_change_info(xdr, cinfo); 5327 out: 5328 return status; 5329 } 5330 5331 static int decode_rename(struct xdr_stream *xdr, struct nfs4_change_info *old_cinfo, 5332 struct nfs4_change_info *new_cinfo) 5333 { 5334 int status; 5335 5336 status = decode_op_hdr(xdr, OP_RENAME); 5337 if (status) 5338 goto out; 5339 if ((status = decode_change_info(xdr, old_cinfo))) 5340 goto out; 5341 status = decode_change_info(xdr, new_cinfo); 5342 out: 5343 return status; 5344 } 5345 5346 static int decode_renew(struct xdr_stream *xdr) 5347 { 5348 return decode_op_hdr(xdr, OP_RENEW); 5349 } 5350 5351 static int 5352 decode_restorefh(struct xdr_stream *xdr) 5353 { 5354 return decode_op_hdr(xdr, OP_RESTOREFH); 5355 } 5356 5357 static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req, 5358 struct nfs_getaclres *res) 5359 { 5360 unsigned int savep; 5361 uint32_t attrlen, 5362 bitmap[3] = {0}; 5363 int status; 5364 5365 res->acl_len = 0; 5366 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) 5367 goto out; 5368 5369 xdr_enter_page(xdr, xdr->buf->page_len); 5370 5371 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) 5372 goto out; 5373 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) 5374 goto out; 5375 5376 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACL - 1U))) 5377 return -EIO; 5378 if (likely(bitmap[0] & FATTR4_WORD0_ACL)) { 5379 5380 /* The bitmap (xdr len + bitmaps) and the attr xdr len words 5381 * are stored with the acl data to handle the problem of 5382 * variable length bitmaps.*/ 5383 res->acl_data_offset = xdr_page_pos(xdr); 5384 res->acl_len = attrlen; 5385 5386 /* Check for receive buffer overflow */ 5387 if (res->acl_len > xdr_stream_remaining(xdr) || 5388 res->acl_len + res->acl_data_offset > xdr->buf->page_len) { 5389 res->acl_flags |= NFS4_ACL_TRUNC; 5390 dprintk("NFS: acl reply: attrlen %u > page_len %zu\n", 5391 attrlen, xdr_stream_remaining(xdr)); 5392 } 5393 } else 5394 status = -EOPNOTSUPP; 5395 5396 out: 5397 return status; 5398 } 5399 5400 static int 5401 decode_savefh(struct xdr_stream *xdr) 5402 { 5403 return decode_op_hdr(xdr, OP_SAVEFH); 5404 } 5405 5406 static int decode_setattr(struct xdr_stream *xdr) 5407 { 5408 int status; 5409 5410 status = decode_op_hdr(xdr, OP_SETATTR); 5411 if (status) 5412 return status; 5413 if (decode_bitmap4(xdr, NULL, 0) >= 0) 5414 return 0; 5415 return -EIO; 5416 } 5417 5418 static int decode_setclientid(struct xdr_stream *xdr, struct nfs4_setclientid_res *res) 5419 { 5420 __be32 *p; 5421 uint32_t opnum; 5422 int32_t nfserr; 5423 5424 p = xdr_inline_decode(xdr, 8); 5425 if (unlikely(!p)) 5426 return -EIO; 5427 opnum = be32_to_cpup(p++); 5428 if (opnum != OP_SETCLIENTID) { 5429 dprintk("nfs: decode_setclientid: Server returned operation" 5430 " %d\n", opnum); 5431 return -EIO; 5432 } 5433 nfserr = be32_to_cpup(p); 5434 if (nfserr == NFS_OK) { 5435 p = xdr_inline_decode(xdr, 8 + NFS4_VERIFIER_SIZE); 5436 if (unlikely(!p)) 5437 return -EIO; 5438 p = xdr_decode_hyper(p, &res->clientid); 5439 memcpy(res->confirm.data, p, NFS4_VERIFIER_SIZE); 5440 } else if (nfserr == NFSERR_CLID_INUSE) { 5441 uint32_t len; 5442 5443 /* skip netid string */ 5444 p = xdr_inline_decode(xdr, 4); 5445 if (unlikely(!p)) 5446 return -EIO; 5447 len = be32_to_cpup(p); 5448 p = xdr_inline_decode(xdr, len); 5449 if (unlikely(!p)) 5450 return -EIO; 5451 5452 /* skip uaddr string */ 5453 p = xdr_inline_decode(xdr, 4); 5454 if (unlikely(!p)) 5455 return -EIO; 5456 len = be32_to_cpup(p); 5457 p = xdr_inline_decode(xdr, len); 5458 if (unlikely(!p)) 5459 return -EIO; 5460 return -NFSERR_CLID_INUSE; 5461 } else 5462 return nfs4_stat_to_errno(nfserr); 5463 5464 return 0; 5465 } 5466 5467 static int decode_setclientid_confirm(struct xdr_stream *xdr) 5468 { 5469 return decode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM); 5470 } 5471 5472 static int decode_write(struct xdr_stream *xdr, struct nfs_pgio_res *res) 5473 { 5474 __be32 *p; 5475 int status; 5476 5477 status = decode_op_hdr(xdr, OP_WRITE); 5478 if (status) 5479 return status; 5480 5481 p = xdr_inline_decode(xdr, 8); 5482 if (unlikely(!p)) 5483 return -EIO; 5484 res->count = be32_to_cpup(p++); 5485 res->verf->committed = be32_to_cpup(p++); 5486 return decode_write_verifier(xdr, &res->verf->verifier); 5487 } 5488 5489 static int decode_delegreturn(struct xdr_stream *xdr) 5490 { 5491 return decode_op_hdr(xdr, OP_DELEGRETURN); 5492 } 5493 5494 static int decode_secinfo_gss(struct xdr_stream *xdr, 5495 struct nfs4_secinfo4 *flavor) 5496 { 5497 u32 oid_len; 5498 __be32 *p; 5499 5500 p = xdr_inline_decode(xdr, 4); 5501 if (unlikely(!p)) 5502 return -EIO; 5503 oid_len = be32_to_cpup(p); 5504 if (oid_len > GSS_OID_MAX_LEN) 5505 return -EINVAL; 5506 5507 p = xdr_inline_decode(xdr, oid_len); 5508 if (unlikely(!p)) 5509 return -EIO; 5510 memcpy(flavor->flavor_info.oid.data, p, oid_len); 5511 flavor->flavor_info.oid.len = oid_len; 5512 5513 p = xdr_inline_decode(xdr, 8); 5514 if (unlikely(!p)) 5515 return -EIO; 5516 flavor->flavor_info.qop = be32_to_cpup(p++); 5517 flavor->flavor_info.service = be32_to_cpup(p); 5518 5519 return 0; 5520 } 5521 5522 static int decode_secinfo_common(struct xdr_stream *xdr, struct nfs4_secinfo_res *res) 5523 { 5524 struct nfs4_secinfo4 *sec_flavor; 5525 unsigned int i, num_flavors; 5526 int status; 5527 __be32 *p; 5528 5529 p = xdr_inline_decode(xdr, 4); 5530 if (unlikely(!p)) 5531 return -EIO; 5532 5533 res->flavors->num_flavors = 0; 5534 num_flavors = be32_to_cpup(p); 5535 5536 for (i = 0; i < num_flavors; i++) { 5537 sec_flavor = &res->flavors->flavors[i]; 5538 if ((char *)&sec_flavor[1] - (char *)res->flavors > PAGE_SIZE) 5539 break; 5540 5541 p = xdr_inline_decode(xdr, 4); 5542 if (unlikely(!p)) 5543 return -EIO; 5544 sec_flavor->flavor = be32_to_cpup(p); 5545 5546 if (sec_flavor->flavor == RPC_AUTH_GSS) { 5547 status = decode_secinfo_gss(xdr, sec_flavor); 5548 if (status) 5549 goto out; 5550 } 5551 res->flavors->num_flavors++; 5552 } 5553 5554 status = 0; 5555 out: 5556 return status; 5557 } 5558 5559 static int decode_secinfo(struct xdr_stream *xdr, struct nfs4_secinfo_res *res) 5560 { 5561 int status = decode_op_hdr(xdr, OP_SECINFO); 5562 if (status) 5563 return status; 5564 return decode_secinfo_common(xdr, res); 5565 } 5566 5567 #if defined(CONFIG_NFS_V4_1) 5568 static int decode_secinfo_no_name(struct xdr_stream *xdr, struct nfs4_secinfo_res *res) 5569 { 5570 int status = decode_op_hdr(xdr, OP_SECINFO_NO_NAME); 5571 if (status) 5572 return status; 5573 return decode_secinfo_common(xdr, res); 5574 } 5575 5576 static int decode_op_map(struct xdr_stream *xdr, struct nfs4_op_map *op_map) 5577 { 5578 if (xdr_stream_decode_uint32_array(xdr, op_map->u.words, 5579 ARRAY_SIZE(op_map->u.words)) < 0) 5580 return -EIO; 5581 return 0; 5582 } 5583 5584 static int decode_exchange_id(struct xdr_stream *xdr, 5585 struct nfs41_exchange_id_res *res) 5586 { 5587 __be32 *p; 5588 uint32_t dummy; 5589 char *dummy_str; 5590 int status; 5591 uint32_t impl_id_count; 5592 5593 status = decode_op_hdr(xdr, OP_EXCHANGE_ID); 5594 if (status) 5595 return status; 5596 5597 p = xdr_inline_decode(xdr, 8); 5598 if (unlikely(!p)) 5599 return -EIO; 5600 xdr_decode_hyper(p, &res->clientid); 5601 p = xdr_inline_decode(xdr, 12); 5602 if (unlikely(!p)) 5603 return -EIO; 5604 res->seqid = be32_to_cpup(p++); 5605 res->flags = be32_to_cpup(p++); 5606 5607 res->state_protect.how = be32_to_cpup(p); 5608 switch (res->state_protect.how) { 5609 case SP4_NONE: 5610 break; 5611 case SP4_MACH_CRED: 5612 status = decode_op_map(xdr, &res->state_protect.enforce); 5613 if (status) 5614 return status; 5615 status = decode_op_map(xdr, &res->state_protect.allow); 5616 if (status) 5617 return status; 5618 break; 5619 default: 5620 WARN_ON_ONCE(1); 5621 return -EIO; 5622 } 5623 5624 /* server_owner4.so_minor_id */ 5625 p = xdr_inline_decode(xdr, 8); 5626 if (unlikely(!p)) 5627 return -EIO; 5628 p = xdr_decode_hyper(p, &res->server_owner->minor_id); 5629 5630 /* server_owner4.so_major_id */ 5631 status = decode_opaque_inline(xdr, &dummy, &dummy_str); 5632 if (unlikely(status)) 5633 return status; 5634 memcpy(res->server_owner->major_id, dummy_str, dummy); 5635 res->server_owner->major_id_sz = dummy; 5636 5637 /* server_scope4 */ 5638 status = decode_opaque_inline(xdr, &dummy, &dummy_str); 5639 if (unlikely(status)) 5640 return status; 5641 memcpy(res->server_scope->server_scope, dummy_str, dummy); 5642 res->server_scope->server_scope_sz = dummy; 5643 5644 /* Implementation Id */ 5645 p = xdr_inline_decode(xdr, 4); 5646 if (unlikely(!p)) 5647 return -EIO; 5648 impl_id_count = be32_to_cpup(p++); 5649 5650 if (impl_id_count) { 5651 /* nii_domain */ 5652 status = decode_opaque_inline(xdr, &dummy, &dummy_str); 5653 if (unlikely(status)) 5654 return status; 5655 memcpy(res->impl_id->domain, dummy_str, dummy); 5656 5657 /* nii_name */ 5658 status = decode_opaque_inline(xdr, &dummy, &dummy_str); 5659 if (unlikely(status)) 5660 return status; 5661 memcpy(res->impl_id->name, dummy_str, dummy); 5662 5663 /* nii_date */ 5664 p = xdr_inline_decode(xdr, 12); 5665 if (unlikely(!p)) 5666 return -EIO; 5667 p = xdr_decode_hyper(p, &res->impl_id->date.seconds); 5668 res->impl_id->date.nseconds = be32_to_cpup(p); 5669 5670 /* if there's more than one entry, ignore the rest */ 5671 } 5672 return 0; 5673 } 5674 5675 static int decode_chan_attrs(struct xdr_stream *xdr, 5676 struct nfs4_channel_attrs *attrs) 5677 { 5678 __be32 *p; 5679 u32 nr_attrs, val; 5680 5681 p = xdr_inline_decode(xdr, 28); 5682 if (unlikely(!p)) 5683 return -EIO; 5684 val = be32_to_cpup(p++); /* headerpadsz */ 5685 if (val) 5686 return -EINVAL; /* no support for header padding yet */ 5687 attrs->max_rqst_sz = be32_to_cpup(p++); 5688 attrs->max_resp_sz = be32_to_cpup(p++); 5689 attrs->max_resp_sz_cached = be32_to_cpup(p++); 5690 attrs->max_ops = be32_to_cpup(p++); 5691 attrs->max_reqs = be32_to_cpup(p++); 5692 nr_attrs = be32_to_cpup(p); 5693 if (unlikely(nr_attrs > 1)) { 5694 printk(KERN_WARNING "NFS: %s: Invalid rdma channel attrs " 5695 "count %u\n", __func__, nr_attrs); 5696 return -EINVAL; 5697 } 5698 if (nr_attrs == 1) { 5699 p = xdr_inline_decode(xdr, 4); /* skip rdma_attrs */ 5700 if (unlikely(!p)) 5701 return -EIO; 5702 } 5703 return 0; 5704 } 5705 5706 static int decode_sessionid(struct xdr_stream *xdr, struct nfs4_sessionid *sid) 5707 { 5708 return decode_opaque_fixed(xdr, sid->data, NFS4_MAX_SESSIONID_LEN); 5709 } 5710 5711 static int decode_bind_conn_to_session(struct xdr_stream *xdr, 5712 struct nfs41_bind_conn_to_session_res *res) 5713 { 5714 __be32 *p; 5715 int status; 5716 5717 status = decode_op_hdr(xdr, OP_BIND_CONN_TO_SESSION); 5718 if (!status) 5719 status = decode_sessionid(xdr, &res->sessionid); 5720 if (unlikely(status)) 5721 return status; 5722 5723 /* dir flags, rdma mode bool */ 5724 p = xdr_inline_decode(xdr, 8); 5725 if (unlikely(!p)) 5726 return -EIO; 5727 5728 res->dir = be32_to_cpup(p++); 5729 if (res->dir == 0 || res->dir > NFS4_CDFS4_BOTH) 5730 return -EIO; 5731 if (be32_to_cpup(p) == 0) 5732 res->use_conn_in_rdma_mode = false; 5733 else 5734 res->use_conn_in_rdma_mode = true; 5735 5736 return 0; 5737 } 5738 5739 static int decode_create_session(struct xdr_stream *xdr, 5740 struct nfs41_create_session_res *res) 5741 { 5742 __be32 *p; 5743 int status; 5744 5745 status = decode_op_hdr(xdr, OP_CREATE_SESSION); 5746 if (!status) 5747 status = decode_sessionid(xdr, &res->sessionid); 5748 if (unlikely(status)) 5749 return status; 5750 5751 /* seqid, flags */ 5752 p = xdr_inline_decode(xdr, 8); 5753 if (unlikely(!p)) 5754 return -EIO; 5755 res->seqid = be32_to_cpup(p++); 5756 res->flags = be32_to_cpup(p); 5757 5758 /* Channel attributes */ 5759 status = decode_chan_attrs(xdr, &res->fc_attrs); 5760 if (!status) 5761 status = decode_chan_attrs(xdr, &res->bc_attrs); 5762 return status; 5763 } 5764 5765 static int decode_destroy_session(struct xdr_stream *xdr, void *dummy) 5766 { 5767 return decode_op_hdr(xdr, OP_DESTROY_SESSION); 5768 } 5769 5770 static int decode_destroy_clientid(struct xdr_stream *xdr, void *dummy) 5771 { 5772 return decode_op_hdr(xdr, OP_DESTROY_CLIENTID); 5773 } 5774 5775 static int decode_reclaim_complete(struct xdr_stream *xdr, void *dummy) 5776 { 5777 return decode_op_hdr(xdr, OP_RECLAIM_COMPLETE); 5778 } 5779 #endif /* CONFIG_NFS_V4_1 */ 5780 5781 static int decode_sequence(struct xdr_stream *xdr, 5782 struct nfs4_sequence_res *res, 5783 struct rpc_rqst *rqstp) 5784 { 5785 #if defined(CONFIG_NFS_V4_1) 5786 struct nfs4_session *session; 5787 struct nfs4_sessionid id; 5788 u32 dummy; 5789 int status; 5790 __be32 *p; 5791 5792 if (res->sr_slot == NULL) 5793 return 0; 5794 if (!res->sr_slot->table->session) 5795 return 0; 5796 5797 status = decode_op_hdr(xdr, OP_SEQUENCE); 5798 if (!status) 5799 status = decode_sessionid(xdr, &id); 5800 if (unlikely(status)) 5801 goto out_err; 5802 5803 /* 5804 * If the server returns different values for sessionID, slotID or 5805 * sequence number, the server is looney tunes. 5806 */ 5807 status = -EREMOTEIO; 5808 session = res->sr_slot->table->session; 5809 5810 if (memcmp(id.data, session->sess_id.data, 5811 NFS4_MAX_SESSIONID_LEN)) { 5812 dprintk("%s Invalid session id\n", __func__); 5813 goto out_err; 5814 } 5815 5816 p = xdr_inline_decode(xdr, 20); 5817 if (unlikely(!p)) 5818 goto out_overflow; 5819 5820 /* seqid */ 5821 dummy = be32_to_cpup(p++); 5822 if (dummy != res->sr_slot->seq_nr) { 5823 dprintk("%s Invalid sequence number\n", __func__); 5824 goto out_err; 5825 } 5826 /* slot id */ 5827 dummy = be32_to_cpup(p++); 5828 if (dummy != res->sr_slot->slot_nr) { 5829 dprintk("%s Invalid slot id\n", __func__); 5830 goto out_err; 5831 } 5832 /* highest slot id */ 5833 res->sr_highest_slotid = be32_to_cpup(p++); 5834 /* target highest slot id */ 5835 res->sr_target_highest_slotid = be32_to_cpup(p++); 5836 /* result flags */ 5837 res->sr_status_flags = be32_to_cpup(p); 5838 status = 0; 5839 out_err: 5840 res->sr_status = status; 5841 return status; 5842 out_overflow: 5843 status = -EIO; 5844 goto out_err; 5845 #else /* CONFIG_NFS_V4_1 */ 5846 return 0; 5847 #endif /* CONFIG_NFS_V4_1 */ 5848 } 5849 5850 #if defined(CONFIG_NFS_V4_1) 5851 static int decode_layout_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid) 5852 { 5853 stateid->type = NFS4_LAYOUT_STATEID_TYPE; 5854 return decode_stateid(xdr, stateid); 5855 } 5856 5857 static int decode_getdeviceinfo(struct xdr_stream *xdr, 5858 struct nfs4_getdeviceinfo_res *res) 5859 { 5860 struct pnfs_device *pdev = res->pdev; 5861 __be32 *p; 5862 uint32_t len, type; 5863 int status; 5864 5865 status = decode_op_hdr(xdr, OP_GETDEVICEINFO); 5866 if (status) { 5867 if (status == -ETOOSMALL) { 5868 p = xdr_inline_decode(xdr, 4); 5869 if (unlikely(!p)) 5870 return -EIO; 5871 pdev->mincount = be32_to_cpup(p); 5872 dprintk("%s: Min count too small. mincnt = %u\n", 5873 __func__, pdev->mincount); 5874 } 5875 return status; 5876 } 5877 5878 p = xdr_inline_decode(xdr, 8); 5879 if (unlikely(!p)) 5880 return -EIO; 5881 type = be32_to_cpup(p++); 5882 if (type != pdev->layout_type) { 5883 dprintk("%s: layout mismatch req: %u pdev: %u\n", 5884 __func__, pdev->layout_type, type); 5885 return -EINVAL; 5886 } 5887 /* 5888 * Get the length of the opaque device_addr4. xdr_read_pages places 5889 * the opaque device_addr4 in the xdr_buf->pages (pnfs_device->pages) 5890 * and places the remaining xdr data in xdr_buf->tail 5891 */ 5892 pdev->mincount = be32_to_cpup(p); 5893 if (xdr_read_pages(xdr, pdev->mincount) != pdev->mincount) 5894 return -EIO; 5895 5896 /* Parse notification bitmap, verifying that it is zero. */ 5897 p = xdr_inline_decode(xdr, 4); 5898 if (unlikely(!p)) 5899 return -EIO; 5900 len = be32_to_cpup(p); 5901 if (len) { 5902 uint32_t i; 5903 5904 p = xdr_inline_decode(xdr, 4 * len); 5905 if (unlikely(!p)) 5906 return -EIO; 5907 5908 res->notification = be32_to_cpup(p++); 5909 for (i = 1; i < len; i++) { 5910 if (be32_to_cpup(p++)) { 5911 dprintk("%s: unsupported notification\n", 5912 __func__); 5913 return -EIO; 5914 } 5915 } 5916 } 5917 return 0; 5918 } 5919 5920 static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req, 5921 struct nfs4_layoutget_res *res) 5922 { 5923 __be32 *p; 5924 int status; 5925 u32 layout_count; 5926 u32 recvd; 5927 5928 status = decode_op_hdr(xdr, OP_LAYOUTGET); 5929 if (status) 5930 goto out; 5931 p = xdr_inline_decode(xdr, 4); 5932 if (unlikely(!p)) 5933 goto out_overflow; 5934 res->return_on_close = be32_to_cpup(p); 5935 decode_layout_stateid(xdr, &res->stateid); 5936 p = xdr_inline_decode(xdr, 4); 5937 if (unlikely(!p)) 5938 goto out_overflow; 5939 layout_count = be32_to_cpup(p); 5940 if (!layout_count) { 5941 dprintk("%s: server responded with empty layout array\n", 5942 __func__); 5943 status = -EINVAL; 5944 goto out; 5945 } 5946 5947 p = xdr_inline_decode(xdr, 28); 5948 if (unlikely(!p)) 5949 goto out_overflow; 5950 p = xdr_decode_hyper(p, &res->range.offset); 5951 p = xdr_decode_hyper(p, &res->range.length); 5952 res->range.iomode = be32_to_cpup(p++); 5953 res->type = be32_to_cpup(p++); 5954 res->layoutp->len = be32_to_cpup(p); 5955 5956 dprintk("%s roff:%lu rlen:%lu riomode:%d, lo_type:0x%x, lo.len:%d\n", 5957 __func__, 5958 (unsigned long)res->range.offset, 5959 (unsigned long)res->range.length, 5960 res->range.iomode, 5961 res->type, 5962 res->layoutp->len); 5963 5964 recvd = xdr_read_pages(xdr, res->layoutp->len); 5965 if (res->layoutp->len > recvd) { 5966 dprintk("NFS: server cheating in layoutget reply: " 5967 "layout len %u > recvd %u\n", 5968 res->layoutp->len, recvd); 5969 status = -EINVAL; 5970 goto out; 5971 } 5972 5973 if (layout_count > 1) { 5974 /* We only handle a length one array at the moment. Any 5975 * further entries are just ignored. Note that this means 5976 * the client may see a response that is less than the 5977 * minimum it requested. 5978 */ 5979 dprintk("%s: server responded with %d layouts, dropping tail\n", 5980 __func__, layout_count); 5981 } 5982 5983 out: 5984 res->status = status; 5985 return status; 5986 out_overflow: 5987 status = -EIO; 5988 goto out; 5989 } 5990 5991 static int decode_layoutreturn(struct xdr_stream *xdr, 5992 struct nfs4_layoutreturn_res *res) 5993 { 5994 __be32 *p; 5995 int status; 5996 5997 status = decode_op_hdr(xdr, OP_LAYOUTRETURN); 5998 if (status) 5999 return status; 6000 p = xdr_inline_decode(xdr, 4); 6001 if (unlikely(!p)) 6002 return -EIO; 6003 res->lrs_present = be32_to_cpup(p); 6004 if (res->lrs_present) 6005 status = decode_layout_stateid(xdr, &res->stateid); 6006 else 6007 nfs4_stateid_copy(&res->stateid, &invalid_stateid); 6008 return status; 6009 } 6010 6011 static int decode_layoutcommit(struct xdr_stream *xdr, 6012 struct rpc_rqst *req, 6013 struct nfs4_layoutcommit_res *res) 6014 { 6015 __be32 *p; 6016 __u32 sizechanged; 6017 int status; 6018 6019 status = decode_op_hdr(xdr, OP_LAYOUTCOMMIT); 6020 res->status = status; 6021 if (status) 6022 return status; 6023 6024 p = xdr_inline_decode(xdr, 4); 6025 if (unlikely(!p)) 6026 return -EIO; 6027 sizechanged = be32_to_cpup(p); 6028 6029 if (sizechanged) { 6030 /* throw away new size */ 6031 p = xdr_inline_decode(xdr, 8); 6032 if (unlikely(!p)) 6033 return -EIO; 6034 } 6035 return 0; 6036 } 6037 6038 static int decode_test_stateid(struct xdr_stream *xdr, 6039 struct nfs41_test_stateid_res *res) 6040 { 6041 __be32 *p; 6042 int status; 6043 int num_res; 6044 6045 status = decode_op_hdr(xdr, OP_TEST_STATEID); 6046 if (status) 6047 return status; 6048 6049 p = xdr_inline_decode(xdr, 4); 6050 if (unlikely(!p)) 6051 return -EIO; 6052 num_res = be32_to_cpup(p++); 6053 if (num_res != 1) 6054 return -EIO; 6055 6056 p = xdr_inline_decode(xdr, 4); 6057 if (unlikely(!p)) 6058 return -EIO; 6059 res->status = be32_to_cpup(p++); 6060 6061 return status; 6062 } 6063 6064 static int decode_free_stateid(struct xdr_stream *xdr, 6065 struct nfs41_free_stateid_res *res) 6066 { 6067 res->status = decode_op_hdr(xdr, OP_FREE_STATEID); 6068 return res->status; 6069 } 6070 #else 6071 static inline 6072 int decode_layoutreturn(struct xdr_stream *xdr, 6073 struct nfs4_layoutreturn_res *res) 6074 { 6075 return 0; 6076 } 6077 6078 static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req, 6079 struct nfs4_layoutget_res *res) 6080 { 6081 return 0; 6082 } 6083 6084 #endif /* CONFIG_NFS_V4_1 */ 6085 6086 /* 6087 * END OF "GENERIC" DECODE ROUTINES. 6088 */ 6089 6090 /* 6091 * Decode OPEN_DOWNGRADE response 6092 */ 6093 static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp, 6094 struct xdr_stream *xdr, 6095 void *data) 6096 { 6097 struct nfs_closeres *res = data; 6098 struct compound_hdr hdr; 6099 int status; 6100 6101 status = decode_compound_hdr(xdr, &hdr); 6102 if (status) 6103 goto out; 6104 status = decode_sequence(xdr, &res->seq_res, rqstp); 6105 if (status) 6106 goto out; 6107 status = decode_putfh(xdr); 6108 if (status) 6109 goto out; 6110 if (res->lr_res) { 6111 status = decode_layoutreturn(xdr, res->lr_res); 6112 res->lr_ret = status; 6113 if (status) 6114 goto out; 6115 } 6116 status = decode_open_downgrade(xdr, res); 6117 out: 6118 return status; 6119 } 6120 6121 /* 6122 * Decode ACCESS response 6123 */ 6124 static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6125 void *data) 6126 { 6127 struct nfs4_accessres *res = data; 6128 struct compound_hdr hdr; 6129 int status; 6130 6131 status = decode_compound_hdr(xdr, &hdr); 6132 if (status) 6133 goto out; 6134 status = decode_sequence(xdr, &res->seq_res, rqstp); 6135 if (status) 6136 goto out; 6137 status = decode_putfh(xdr); 6138 if (status != 0) 6139 goto out; 6140 status = decode_access(xdr, &res->supported, &res->access); 6141 if (status != 0) 6142 goto out; 6143 if (res->fattr) 6144 decode_getfattr(xdr, res->fattr, res->server); 6145 out: 6146 return status; 6147 } 6148 6149 /* 6150 * Decode LOOKUP response 6151 */ 6152 static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6153 void *data) 6154 { 6155 struct nfs4_lookup_res *res = data; 6156 struct compound_hdr hdr; 6157 int status; 6158 6159 status = decode_compound_hdr(xdr, &hdr); 6160 if (status) 6161 goto out; 6162 status = decode_sequence(xdr, &res->seq_res, rqstp); 6163 if (status) 6164 goto out; 6165 status = decode_putfh(xdr); 6166 if (status) 6167 goto out; 6168 status = decode_lookup(xdr); 6169 if (status) 6170 goto out; 6171 status = decode_getfh(xdr, res->fh); 6172 if (status) 6173 goto out; 6174 status = decode_getfattr_label(xdr, res->fattr, res->fattr->label, res->server); 6175 out: 6176 return status; 6177 } 6178 6179 /* 6180 * Decode LOOKUPP response 6181 */ 6182 static int nfs4_xdr_dec_lookupp(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6183 void *data) 6184 { 6185 struct nfs4_lookupp_res *res = data; 6186 struct compound_hdr hdr; 6187 int status; 6188 6189 status = decode_compound_hdr(xdr, &hdr); 6190 if (status) 6191 goto out; 6192 status = decode_sequence(xdr, &res->seq_res, rqstp); 6193 if (status) 6194 goto out; 6195 status = decode_putfh(xdr); 6196 if (status) 6197 goto out; 6198 status = decode_lookupp(xdr); 6199 if (status) 6200 goto out; 6201 status = decode_getfh(xdr, res->fh); 6202 if (status) 6203 goto out; 6204 status = decode_getfattr_label(xdr, res->fattr, res->fattr->label, res->server); 6205 out: 6206 return status; 6207 } 6208 6209 /* 6210 * Decode LOOKUP_ROOT response 6211 */ 6212 static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp, 6213 struct xdr_stream *xdr, 6214 void *data) 6215 { 6216 struct nfs4_lookup_res *res = data; 6217 struct compound_hdr hdr; 6218 int status; 6219 6220 status = decode_compound_hdr(xdr, &hdr); 6221 if (status) 6222 goto out; 6223 status = decode_sequence(xdr, &res->seq_res, rqstp); 6224 if (status) 6225 goto out; 6226 status = decode_putrootfh(xdr); 6227 if (status) 6228 goto out; 6229 status = decode_getfh(xdr, res->fh); 6230 if (status == 0) 6231 status = decode_getfattr_label(xdr, res->fattr, 6232 res->fattr->label, res->server); 6233 out: 6234 return status; 6235 } 6236 6237 /* 6238 * Decode REMOVE response 6239 */ 6240 static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6241 void *data) 6242 { 6243 struct nfs_removeres *res = data; 6244 struct compound_hdr hdr; 6245 int status; 6246 6247 status = decode_compound_hdr(xdr, &hdr); 6248 if (status) 6249 goto out; 6250 status = decode_sequence(xdr, &res->seq_res, rqstp); 6251 if (status) 6252 goto out; 6253 status = decode_putfh(xdr); 6254 if (status) 6255 goto out; 6256 status = decode_remove(xdr, &res->cinfo); 6257 out: 6258 return status; 6259 } 6260 6261 /* 6262 * Decode RENAME response 6263 */ 6264 static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6265 void *data) 6266 { 6267 struct nfs_renameres *res = data; 6268 struct compound_hdr hdr; 6269 int status; 6270 6271 status = decode_compound_hdr(xdr, &hdr); 6272 if (status) 6273 goto out; 6274 status = decode_sequence(xdr, &res->seq_res, rqstp); 6275 if (status) 6276 goto out; 6277 status = decode_putfh(xdr); 6278 if (status) 6279 goto out; 6280 status = decode_savefh(xdr); 6281 if (status) 6282 goto out; 6283 status = decode_putfh(xdr); 6284 if (status) 6285 goto out; 6286 status = decode_rename(xdr, &res->old_cinfo, &res->new_cinfo); 6287 out: 6288 return status; 6289 } 6290 6291 /* 6292 * Decode LINK response 6293 */ 6294 static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6295 void *data) 6296 { 6297 struct nfs4_link_res *res = data; 6298 struct compound_hdr hdr; 6299 int status; 6300 6301 status = decode_compound_hdr(xdr, &hdr); 6302 if (status) 6303 goto out; 6304 status = decode_sequence(xdr, &res->seq_res, rqstp); 6305 if (status) 6306 goto out; 6307 status = decode_putfh(xdr); 6308 if (status) 6309 goto out; 6310 status = decode_savefh(xdr); 6311 if (status) 6312 goto out; 6313 status = decode_putfh(xdr); 6314 if (status) 6315 goto out; 6316 status = decode_link(xdr, &res->cinfo); 6317 if (status) 6318 goto out; 6319 /* 6320 * Note order: OP_LINK leaves the directory as the current 6321 * filehandle. 6322 */ 6323 status = decode_restorefh(xdr); 6324 if (status) 6325 goto out; 6326 decode_getfattr_label(xdr, res->fattr, res->fattr->label, res->server); 6327 out: 6328 return status; 6329 } 6330 6331 /* 6332 * Decode CREATE response 6333 */ 6334 static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6335 void *data) 6336 { 6337 struct nfs4_create_res *res = data; 6338 struct compound_hdr hdr; 6339 int status; 6340 6341 status = decode_compound_hdr(xdr, &hdr); 6342 if (status) 6343 goto out; 6344 status = decode_sequence(xdr, &res->seq_res, rqstp); 6345 if (status) 6346 goto out; 6347 status = decode_putfh(xdr); 6348 if (status) 6349 goto out; 6350 status = decode_create(xdr, &res->dir_cinfo); 6351 if (status) 6352 goto out; 6353 status = decode_getfh(xdr, res->fh); 6354 if (status) 6355 goto out; 6356 decode_getfattr_label(xdr, res->fattr, res->fattr->label, res->server); 6357 out: 6358 return status; 6359 } 6360 6361 /* 6362 * Decode SYMLINK response 6363 */ 6364 static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6365 void *res) 6366 { 6367 return nfs4_xdr_dec_create(rqstp, xdr, res); 6368 } 6369 6370 /* 6371 * Decode GETATTR response 6372 */ 6373 static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6374 void *data) 6375 { 6376 struct nfs4_getattr_res *res = data; 6377 struct compound_hdr hdr; 6378 int status; 6379 6380 status = decode_compound_hdr(xdr, &hdr); 6381 if (status) 6382 goto out; 6383 status = decode_sequence(xdr, &res->seq_res, rqstp); 6384 if (status) 6385 goto out; 6386 status = decode_putfh(xdr); 6387 if (status) 6388 goto out; 6389 status = decode_getfattr_label(xdr, res->fattr, res->label, res->server); 6390 out: 6391 return status; 6392 } 6393 6394 /* 6395 * Encode an SETACL request 6396 */ 6397 static void nfs4_xdr_enc_setacl(struct rpc_rqst *req, struct xdr_stream *xdr, 6398 const void *data) 6399 { 6400 const struct nfs_setaclargs *args = data; 6401 struct compound_hdr hdr = { 6402 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 6403 }; 6404 6405 encode_compound_hdr(xdr, req, &hdr); 6406 encode_sequence(xdr, &args->seq_args, &hdr); 6407 encode_putfh(xdr, args->fh, &hdr); 6408 encode_setacl(xdr, args, &hdr); 6409 encode_nops(&hdr); 6410 } 6411 6412 /* 6413 * Decode SETACL response 6414 */ 6415 static int 6416 nfs4_xdr_dec_setacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6417 void *data) 6418 { 6419 struct nfs_setaclres *res = data; 6420 struct compound_hdr hdr; 6421 int status; 6422 6423 status = decode_compound_hdr(xdr, &hdr); 6424 if (status) 6425 goto out; 6426 status = decode_sequence(xdr, &res->seq_res, rqstp); 6427 if (status) 6428 goto out; 6429 status = decode_putfh(xdr); 6430 if (status) 6431 goto out; 6432 status = decode_setattr(xdr); 6433 out: 6434 return status; 6435 } 6436 6437 /* 6438 * Decode GETACL response 6439 */ 6440 static int 6441 nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6442 void *data) 6443 { 6444 struct nfs_getaclres *res = data; 6445 struct compound_hdr hdr; 6446 int status; 6447 6448 if (res->acl_scratch != NULL) 6449 xdr_set_scratch_page(xdr, res->acl_scratch); 6450 status = decode_compound_hdr(xdr, &hdr); 6451 if (status) 6452 goto out; 6453 status = decode_sequence(xdr, &res->seq_res, rqstp); 6454 if (status) 6455 goto out; 6456 status = decode_putfh(xdr); 6457 if (status) 6458 goto out; 6459 status = decode_getacl(xdr, rqstp, res); 6460 6461 out: 6462 return status; 6463 } 6464 6465 /* 6466 * Decode CLOSE response 6467 */ 6468 static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6469 void *data) 6470 { 6471 struct nfs_closeres *res = data; 6472 struct compound_hdr hdr; 6473 int status; 6474 6475 status = decode_compound_hdr(xdr, &hdr); 6476 if (status) 6477 goto out; 6478 status = decode_sequence(xdr, &res->seq_res, rqstp); 6479 if (status) 6480 goto out; 6481 status = decode_putfh(xdr); 6482 if (status) 6483 goto out; 6484 if (res->lr_res) { 6485 status = decode_layoutreturn(xdr, res->lr_res); 6486 res->lr_ret = status; 6487 if (status) 6488 goto out; 6489 } 6490 if (res->fattr != NULL) { 6491 status = decode_getfattr(xdr, res->fattr, res->server); 6492 if (status != 0) 6493 goto out; 6494 } 6495 status = decode_close(xdr, res); 6496 out: 6497 return status; 6498 } 6499 6500 /* 6501 * Decode OPEN response 6502 */ 6503 static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6504 void *data) 6505 { 6506 struct nfs_openres *res = data; 6507 struct compound_hdr hdr; 6508 int status; 6509 6510 status = decode_compound_hdr(xdr, &hdr); 6511 if (status) 6512 goto out; 6513 status = decode_sequence(xdr, &res->seq_res, rqstp); 6514 if (status) 6515 goto out; 6516 status = decode_putfh(xdr); 6517 if (status) 6518 goto out; 6519 status = decode_open(xdr, res); 6520 if (status) 6521 goto out; 6522 status = decode_getfh(xdr, &res->fh); 6523 if (status) 6524 goto out; 6525 if (res->access_request) 6526 decode_access(xdr, &res->access_supported, &res->access_result); 6527 decode_getfattr_label(xdr, res->f_attr, res->f_attr->label, res->server); 6528 if (res->lg_res) 6529 decode_layoutget(xdr, rqstp, res->lg_res); 6530 out: 6531 return status; 6532 } 6533 6534 /* 6535 * Decode OPEN_CONFIRM response 6536 */ 6537 static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp, 6538 struct xdr_stream *xdr, 6539 void *data) 6540 { 6541 struct nfs_open_confirmres *res = data; 6542 struct compound_hdr hdr; 6543 int status; 6544 6545 status = decode_compound_hdr(xdr, &hdr); 6546 if (status) 6547 goto out; 6548 status = decode_putfh(xdr); 6549 if (status) 6550 goto out; 6551 status = decode_open_confirm(xdr, res); 6552 out: 6553 return status; 6554 } 6555 6556 /* 6557 * Decode OPEN response 6558 */ 6559 static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp, 6560 struct xdr_stream *xdr, 6561 void *data) 6562 { 6563 struct nfs_openres *res = data; 6564 struct compound_hdr hdr; 6565 int status; 6566 6567 status = decode_compound_hdr(xdr, &hdr); 6568 if (status) 6569 goto out; 6570 status = decode_sequence(xdr, &res->seq_res, rqstp); 6571 if (status) 6572 goto out; 6573 status = decode_putfh(xdr); 6574 if (status) 6575 goto out; 6576 status = decode_open(xdr, res); 6577 if (status) 6578 goto out; 6579 if (res->access_request) 6580 decode_access(xdr, &res->access_supported, &res->access_result); 6581 decode_getfattr(xdr, res->f_attr, res->server); 6582 if (res->lg_res) 6583 decode_layoutget(xdr, rqstp, res->lg_res); 6584 out: 6585 return status; 6586 } 6587 6588 /* 6589 * Decode SETATTR response 6590 */ 6591 static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp, 6592 struct xdr_stream *xdr, 6593 void *data) 6594 { 6595 struct nfs_setattrres *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_setattr(xdr); 6609 if (status) 6610 goto out; 6611 decode_getfattr_label(xdr, res->fattr, res->label, res->server); 6612 out: 6613 return status; 6614 } 6615 6616 /* 6617 * Decode LOCK response 6618 */ 6619 static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6620 void *data) 6621 { 6622 struct nfs_lock_res *res = data; 6623 struct compound_hdr hdr; 6624 int status; 6625 6626 status = decode_compound_hdr(xdr, &hdr); 6627 if (status) 6628 goto out; 6629 status = decode_sequence(xdr, &res->seq_res, rqstp); 6630 if (status) 6631 goto out; 6632 status = decode_putfh(xdr); 6633 if (status) 6634 goto out; 6635 status = decode_lock(xdr, res); 6636 out: 6637 return status; 6638 } 6639 6640 /* 6641 * Decode LOCKT response 6642 */ 6643 static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6644 void *data) 6645 { 6646 struct nfs_lockt_res *res = data; 6647 struct compound_hdr hdr; 6648 int status; 6649 6650 status = decode_compound_hdr(xdr, &hdr); 6651 if (status) 6652 goto out; 6653 status = decode_sequence(xdr, &res->seq_res, rqstp); 6654 if (status) 6655 goto out; 6656 status = decode_putfh(xdr); 6657 if (status) 6658 goto out; 6659 status = decode_lockt(xdr, res); 6660 out: 6661 return status; 6662 } 6663 6664 /* 6665 * Decode LOCKU response 6666 */ 6667 static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6668 void *data) 6669 { 6670 struct nfs_locku_res *res = data; 6671 struct compound_hdr hdr; 6672 int status; 6673 6674 status = decode_compound_hdr(xdr, &hdr); 6675 if (status) 6676 goto out; 6677 status = decode_sequence(xdr, &res->seq_res, rqstp); 6678 if (status) 6679 goto out; 6680 status = decode_putfh(xdr); 6681 if (status) 6682 goto out; 6683 status = decode_locku(xdr, res); 6684 out: 6685 return status; 6686 } 6687 6688 static int nfs4_xdr_dec_release_lockowner(struct rpc_rqst *rqstp, 6689 struct xdr_stream *xdr, void *dummy) 6690 { 6691 struct compound_hdr hdr; 6692 int status; 6693 6694 status = decode_compound_hdr(xdr, &hdr); 6695 if (!status) 6696 status = decode_release_lockowner(xdr); 6697 return status; 6698 } 6699 6700 /* 6701 * Decode READLINK response 6702 */ 6703 static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp, 6704 struct xdr_stream *xdr, 6705 void *data) 6706 { 6707 struct nfs4_readlink_res *res = data; 6708 struct compound_hdr hdr; 6709 int status; 6710 6711 status = decode_compound_hdr(xdr, &hdr); 6712 if (status) 6713 goto out; 6714 status = decode_sequence(xdr, &res->seq_res, rqstp); 6715 if (status) 6716 goto out; 6717 status = decode_putfh(xdr); 6718 if (status) 6719 goto out; 6720 status = decode_readlink(xdr, rqstp); 6721 out: 6722 return status; 6723 } 6724 6725 /* 6726 * Decode READDIR response 6727 */ 6728 static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6729 void *data) 6730 { 6731 struct nfs4_readdir_res *res = data; 6732 struct compound_hdr hdr; 6733 int status; 6734 6735 status = decode_compound_hdr(xdr, &hdr); 6736 if (status) 6737 goto out; 6738 status = decode_sequence(xdr, &res->seq_res, rqstp); 6739 if (status) 6740 goto out; 6741 status = decode_putfh(xdr); 6742 if (status) 6743 goto out; 6744 status = decode_readdir(xdr, rqstp, res); 6745 out: 6746 return status; 6747 } 6748 6749 /* 6750 * Decode Read response 6751 */ 6752 static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6753 void *data) 6754 { 6755 struct nfs_pgio_res *res = data; 6756 struct compound_hdr hdr; 6757 int status; 6758 6759 status = decode_compound_hdr(xdr, &hdr); 6760 res->op_status = hdr.status; 6761 if (status) 6762 goto out; 6763 status = decode_sequence(xdr, &res->seq_res, rqstp); 6764 if (status) 6765 goto out; 6766 status = decode_putfh(xdr); 6767 if (status) 6768 goto out; 6769 status = decode_read(xdr, rqstp, res); 6770 if (!status) 6771 status = res->count; 6772 out: 6773 return status; 6774 } 6775 6776 /* 6777 * Decode WRITE response 6778 */ 6779 static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6780 void *data) 6781 { 6782 struct nfs_pgio_res *res = data; 6783 struct compound_hdr hdr; 6784 int status; 6785 6786 status = decode_compound_hdr(xdr, &hdr); 6787 res->op_status = hdr.status; 6788 if (status) 6789 goto out; 6790 status = decode_sequence(xdr, &res->seq_res, rqstp); 6791 if (status) 6792 goto out; 6793 status = decode_putfh(xdr); 6794 if (status) 6795 goto out; 6796 status = decode_write(xdr, res); 6797 if (status) 6798 goto out; 6799 if (res->fattr) 6800 decode_getfattr(xdr, res->fattr, res->server); 6801 if (!status) 6802 status = res->count; 6803 out: 6804 return status; 6805 } 6806 6807 /* 6808 * Decode COMMIT response 6809 */ 6810 static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6811 void *data) 6812 { 6813 struct nfs_commitres *res = data; 6814 struct compound_hdr hdr; 6815 int status; 6816 6817 status = decode_compound_hdr(xdr, &hdr); 6818 res->op_status = hdr.status; 6819 if (status) 6820 goto out; 6821 status = decode_sequence(xdr, &res->seq_res, rqstp); 6822 if (status) 6823 goto out; 6824 status = decode_putfh(xdr); 6825 if (status) 6826 goto out; 6827 status = decode_commit(xdr, res); 6828 out: 6829 return status; 6830 } 6831 6832 /* 6833 * Decode FSINFO response 6834 */ 6835 static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr, 6836 void *data) 6837 { 6838 struct nfs4_fsinfo_res *res = data; 6839 struct compound_hdr hdr; 6840 int status; 6841 6842 status = decode_compound_hdr(xdr, &hdr); 6843 if (!status) 6844 status = decode_sequence(xdr, &res->seq_res, req); 6845 if (!status) 6846 status = decode_putfh(xdr); 6847 if (!status) 6848 status = decode_fsinfo(xdr, res->fsinfo); 6849 return status; 6850 } 6851 6852 /* 6853 * Decode PATHCONF response 6854 */ 6855 static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr, 6856 void *data) 6857 { 6858 struct nfs4_pathconf_res *res = data; 6859 struct compound_hdr hdr; 6860 int status; 6861 6862 status = decode_compound_hdr(xdr, &hdr); 6863 if (!status) 6864 status = decode_sequence(xdr, &res->seq_res, req); 6865 if (!status) 6866 status = decode_putfh(xdr); 6867 if (!status) 6868 status = decode_pathconf(xdr, res->pathconf); 6869 return status; 6870 } 6871 6872 /* 6873 * Decode STATFS response 6874 */ 6875 static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, struct xdr_stream *xdr, 6876 void *data) 6877 { 6878 struct nfs4_statfs_res *res = data; 6879 struct compound_hdr hdr; 6880 int status; 6881 6882 status = decode_compound_hdr(xdr, &hdr); 6883 if (!status) 6884 status = decode_sequence(xdr, &res->seq_res, req); 6885 if (!status) 6886 status = decode_putfh(xdr); 6887 if (!status) 6888 status = decode_statfs(xdr, res->fsstat); 6889 return status; 6890 } 6891 6892 /* 6893 * Decode GETATTR_BITMAP response 6894 */ 6895 static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req, 6896 struct xdr_stream *xdr, 6897 void *data) 6898 { 6899 struct nfs4_server_caps_res *res = data; 6900 struct compound_hdr hdr; 6901 int status; 6902 6903 status = decode_compound_hdr(xdr, &hdr); 6904 if (status) 6905 goto out; 6906 status = decode_sequence(xdr, &res->seq_res, req); 6907 if (status) 6908 goto out; 6909 status = decode_putfh(xdr); 6910 if (status) 6911 goto out; 6912 status = decode_server_caps(xdr, res); 6913 out: 6914 return status; 6915 } 6916 6917 /* 6918 * Decode RENEW response 6919 */ 6920 static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6921 void *__unused) 6922 { 6923 struct compound_hdr hdr; 6924 int status; 6925 6926 status = decode_compound_hdr(xdr, &hdr); 6927 if (!status) 6928 status = decode_renew(xdr); 6929 return status; 6930 } 6931 6932 /* 6933 * Decode SETCLIENTID response 6934 */ 6935 static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req, 6936 struct xdr_stream *xdr, 6937 void *data) 6938 { 6939 struct nfs4_setclientid_res *res = data; 6940 struct compound_hdr hdr; 6941 int status; 6942 6943 status = decode_compound_hdr(xdr, &hdr); 6944 if (!status) 6945 status = decode_setclientid(xdr, res); 6946 return status; 6947 } 6948 6949 /* 6950 * Decode SETCLIENTID_CONFIRM response 6951 */ 6952 static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req, 6953 struct xdr_stream *xdr, 6954 void *data) 6955 { 6956 struct compound_hdr hdr; 6957 int status; 6958 6959 status = decode_compound_hdr(xdr, &hdr); 6960 if (!status) 6961 status = decode_setclientid_confirm(xdr); 6962 return status; 6963 } 6964 6965 /* 6966 * Decode DELEGRETURN response 6967 */ 6968 static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp, 6969 struct xdr_stream *xdr, 6970 void *data) 6971 { 6972 struct nfs4_delegreturnres *res = data; 6973 struct compound_hdr hdr; 6974 int status; 6975 6976 status = decode_compound_hdr(xdr, &hdr); 6977 if (status) 6978 goto out; 6979 status = decode_sequence(xdr, &res->seq_res, rqstp); 6980 if (status) 6981 goto out; 6982 status = decode_putfh(xdr); 6983 if (status != 0) 6984 goto out; 6985 if (res->lr_res) { 6986 status = decode_layoutreturn(xdr, res->lr_res); 6987 res->lr_ret = status; 6988 if (status) 6989 goto out; 6990 } 6991 if (res->fattr) { 6992 status = decode_getfattr(xdr, res->fattr, res->server); 6993 if (status != 0) 6994 goto out; 6995 } 6996 status = decode_delegreturn(xdr); 6997 out: 6998 return status; 6999 } 7000 7001 /* 7002 * Decode FS_LOCATIONS response 7003 */ 7004 static int nfs4_xdr_dec_fs_locations(struct rpc_rqst *req, 7005 struct xdr_stream *xdr, 7006 void *data) 7007 { 7008 struct nfs4_fs_locations_res *res = data; 7009 struct compound_hdr hdr; 7010 int status; 7011 7012 status = decode_compound_hdr(xdr, &hdr); 7013 if (status) 7014 goto out; 7015 status = decode_sequence(xdr, &res->seq_res, req); 7016 if (status) 7017 goto out; 7018 status = decode_putfh(xdr); 7019 if (status) 7020 goto out; 7021 if (res->migration) { 7022 xdr_enter_page(xdr, PAGE_SIZE); 7023 status = decode_getfattr_generic(xdr, 7024 &res->fs_locations->fattr, 7025 NULL, res->fs_locations, 7026 NULL, res->fs_locations->server); 7027 if (status) 7028 goto out; 7029 if (res->renew) 7030 status = decode_renew(xdr); 7031 } else { 7032 status = decode_lookup(xdr); 7033 if (status) 7034 goto out; 7035 xdr_enter_page(xdr, PAGE_SIZE); 7036 status = decode_getfattr_generic(xdr, 7037 &res->fs_locations->fattr, 7038 NULL, res->fs_locations, 7039 NULL, res->fs_locations->server); 7040 } 7041 out: 7042 return status; 7043 } 7044 7045 /* 7046 * Decode SECINFO response 7047 */ 7048 static int nfs4_xdr_dec_secinfo(struct rpc_rqst *rqstp, 7049 struct xdr_stream *xdr, 7050 void *data) 7051 { 7052 struct nfs4_secinfo_res *res = data; 7053 struct compound_hdr hdr; 7054 int status; 7055 7056 status = decode_compound_hdr(xdr, &hdr); 7057 if (status) 7058 goto out; 7059 status = decode_sequence(xdr, &res->seq_res, rqstp); 7060 if (status) 7061 goto out; 7062 status = decode_putfh(xdr); 7063 if (status) 7064 goto out; 7065 status = decode_secinfo(xdr, res); 7066 out: 7067 return status; 7068 } 7069 7070 /* 7071 * Decode FSID_PRESENT response 7072 */ 7073 static int nfs4_xdr_dec_fsid_present(struct rpc_rqst *rqstp, 7074 struct xdr_stream *xdr, 7075 void *data) 7076 { 7077 struct nfs4_fsid_present_res *res = data; 7078 struct compound_hdr hdr; 7079 int status; 7080 7081 status = decode_compound_hdr(xdr, &hdr); 7082 if (status) 7083 goto out; 7084 status = decode_sequence(xdr, &res->seq_res, rqstp); 7085 if (status) 7086 goto out; 7087 status = decode_putfh(xdr); 7088 if (status) 7089 goto out; 7090 status = decode_getfh(xdr, res->fh); 7091 if (status) 7092 goto out; 7093 if (res->renew) 7094 status = decode_renew(xdr); 7095 out: 7096 return status; 7097 } 7098 7099 #if defined(CONFIG_NFS_V4_1) 7100 /* 7101 * Decode BIND_CONN_TO_SESSION response 7102 */ 7103 static int nfs4_xdr_dec_bind_conn_to_session(struct rpc_rqst *rqstp, 7104 struct xdr_stream *xdr, 7105 void *res) 7106 { 7107 struct compound_hdr hdr; 7108 int status; 7109 7110 status = decode_compound_hdr(xdr, &hdr); 7111 if (!status) 7112 status = decode_bind_conn_to_session(xdr, res); 7113 return status; 7114 } 7115 7116 /* 7117 * Decode EXCHANGE_ID response 7118 */ 7119 static int nfs4_xdr_dec_exchange_id(struct rpc_rqst *rqstp, 7120 struct xdr_stream *xdr, 7121 void *res) 7122 { 7123 struct compound_hdr hdr; 7124 int status; 7125 7126 status = decode_compound_hdr(xdr, &hdr); 7127 if (!status) 7128 status = decode_exchange_id(xdr, res); 7129 return status; 7130 } 7131 7132 /* 7133 * Decode CREATE_SESSION response 7134 */ 7135 static int nfs4_xdr_dec_create_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_create_session(xdr, res); 7145 return status; 7146 } 7147 7148 /* 7149 * Decode DESTROY_SESSION response 7150 */ 7151 static int nfs4_xdr_dec_destroy_session(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_destroy_session(xdr, res); 7161 return status; 7162 } 7163 7164 /* 7165 * Decode DESTROY_CLIENTID response 7166 */ 7167 static int nfs4_xdr_dec_destroy_clientid(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_destroy_clientid(xdr, res); 7177 return status; 7178 } 7179 7180 /* 7181 * Decode SEQUENCE response 7182 */ 7183 static int nfs4_xdr_dec_sequence(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_sequence(xdr, res, rqstp); 7193 return status; 7194 } 7195 7196 #endif 7197 7198 /* 7199 * Decode GET_LEASE_TIME response 7200 */ 7201 static int nfs4_xdr_dec_get_lease_time(struct rpc_rqst *rqstp, 7202 struct xdr_stream *xdr, 7203 void *data) 7204 { 7205 struct nfs4_get_lease_time_res *res = data; 7206 struct compound_hdr hdr; 7207 int status; 7208 7209 status = decode_compound_hdr(xdr, &hdr); 7210 if (!status) 7211 status = decode_sequence(xdr, &res->lr_seq_res, rqstp); 7212 if (!status) 7213 status = decode_putrootfh(xdr); 7214 if (!status) 7215 status = decode_fsinfo(xdr, res->lr_fsinfo); 7216 return status; 7217 } 7218 7219 #ifdef CONFIG_NFS_V4_1 7220 7221 /* 7222 * Decode RECLAIM_COMPLETE response 7223 */ 7224 static int nfs4_xdr_dec_reclaim_complete(struct rpc_rqst *rqstp, 7225 struct xdr_stream *xdr, 7226 void *data) 7227 { 7228 struct nfs41_reclaim_complete_res *res = data; 7229 struct compound_hdr hdr; 7230 int status; 7231 7232 status = decode_compound_hdr(xdr, &hdr); 7233 if (!status) 7234 status = decode_sequence(xdr, &res->seq_res, rqstp); 7235 if (!status) 7236 status = decode_reclaim_complete(xdr, NULL); 7237 return status; 7238 } 7239 7240 /* 7241 * Decode GETDEVINFO response 7242 */ 7243 static int nfs4_xdr_dec_getdeviceinfo(struct rpc_rqst *rqstp, 7244 struct xdr_stream *xdr, 7245 void *data) 7246 { 7247 struct nfs4_getdeviceinfo_res *res = data; 7248 struct compound_hdr hdr; 7249 int status; 7250 7251 status = decode_compound_hdr(xdr, &hdr); 7252 if (status != 0) 7253 goto out; 7254 status = decode_sequence(xdr, &res->seq_res, rqstp); 7255 if (status != 0) 7256 goto out; 7257 status = decode_getdeviceinfo(xdr, res); 7258 out: 7259 return status; 7260 } 7261 7262 /* 7263 * Decode LAYOUTGET response 7264 */ 7265 static int nfs4_xdr_dec_layoutget(struct rpc_rqst *rqstp, 7266 struct xdr_stream *xdr, 7267 void *data) 7268 { 7269 struct nfs4_layoutget_res *res = data; 7270 struct compound_hdr hdr; 7271 int status; 7272 7273 status = decode_compound_hdr(xdr, &hdr); 7274 if (status) 7275 goto out; 7276 status = decode_sequence(xdr, &res->seq_res, rqstp); 7277 if (status) 7278 goto out; 7279 status = decode_putfh(xdr); 7280 if (status) 7281 goto out; 7282 status = decode_layoutget(xdr, rqstp, res); 7283 out: 7284 return status; 7285 } 7286 7287 /* 7288 * Decode LAYOUTRETURN response 7289 */ 7290 static int nfs4_xdr_dec_layoutreturn(struct rpc_rqst *rqstp, 7291 struct xdr_stream *xdr, 7292 void *data) 7293 { 7294 struct nfs4_layoutreturn_res *res = data; 7295 struct compound_hdr hdr; 7296 int status; 7297 7298 status = decode_compound_hdr(xdr, &hdr); 7299 if (status) 7300 goto out; 7301 status = decode_sequence(xdr, &res->seq_res, rqstp); 7302 if (status) 7303 goto out; 7304 status = decode_putfh(xdr); 7305 if (status) 7306 goto out; 7307 status = decode_layoutreturn(xdr, res); 7308 out: 7309 return status; 7310 } 7311 7312 /* 7313 * Decode LAYOUTCOMMIT response 7314 */ 7315 static int nfs4_xdr_dec_layoutcommit(struct rpc_rqst *rqstp, 7316 struct xdr_stream *xdr, 7317 void *data) 7318 { 7319 struct nfs4_layoutcommit_res *res = data; 7320 struct compound_hdr hdr; 7321 int status; 7322 7323 status = decode_compound_hdr(xdr, &hdr); 7324 if (status) 7325 goto out; 7326 status = decode_sequence(xdr, &res->seq_res, rqstp); 7327 if (status) 7328 goto out; 7329 status = decode_putfh(xdr); 7330 if (status) 7331 goto out; 7332 status = decode_layoutcommit(xdr, rqstp, res); 7333 if (status) 7334 goto out; 7335 decode_getfattr(xdr, res->fattr, res->server); 7336 out: 7337 return status; 7338 } 7339 7340 /* 7341 * Decode SECINFO_NO_NAME response 7342 */ 7343 static int nfs4_xdr_dec_secinfo_no_name(struct rpc_rqst *rqstp, 7344 struct xdr_stream *xdr, 7345 void *data) 7346 { 7347 struct nfs4_secinfo_res *res = data; 7348 struct compound_hdr hdr; 7349 int status; 7350 7351 status = decode_compound_hdr(xdr, &hdr); 7352 if (status) 7353 goto out; 7354 status = decode_sequence(xdr, &res->seq_res, rqstp); 7355 if (status) 7356 goto out; 7357 status = decode_putrootfh(xdr); 7358 if (status) 7359 goto out; 7360 status = decode_secinfo_no_name(xdr, res); 7361 out: 7362 return status; 7363 } 7364 7365 /* 7366 * Decode TEST_STATEID response 7367 */ 7368 static int nfs4_xdr_dec_test_stateid(struct rpc_rqst *rqstp, 7369 struct xdr_stream *xdr, 7370 void *data) 7371 { 7372 struct nfs41_test_stateid_res *res = data; 7373 struct compound_hdr hdr; 7374 int status; 7375 7376 status = decode_compound_hdr(xdr, &hdr); 7377 if (status) 7378 goto out; 7379 status = decode_sequence(xdr, &res->seq_res, rqstp); 7380 if (status) 7381 goto out; 7382 status = decode_test_stateid(xdr, res); 7383 out: 7384 return status; 7385 } 7386 7387 /* 7388 * Decode FREE_STATEID response 7389 */ 7390 static int nfs4_xdr_dec_free_stateid(struct rpc_rqst *rqstp, 7391 struct xdr_stream *xdr, 7392 void *data) 7393 { 7394 struct nfs41_free_stateid_res *res = data; 7395 struct compound_hdr hdr; 7396 int status; 7397 7398 status = decode_compound_hdr(xdr, &hdr); 7399 if (status) 7400 goto out; 7401 status = decode_sequence(xdr, &res->seq_res, rqstp); 7402 if (status) 7403 goto out; 7404 status = decode_free_stateid(xdr, res); 7405 out: 7406 return status; 7407 } 7408 #endif /* CONFIG_NFS_V4_1 */ 7409 7410 /** 7411 * nfs4_decode_dirent - Decode a single NFSv4 directory entry stored in 7412 * the local page cache. 7413 * @xdr: XDR stream where entry resides 7414 * @entry: buffer to fill in with entry data 7415 * @plus: boolean indicating whether this should be a readdirplus entry 7416 * 7417 * Returns zero if successful, otherwise a negative errno value is 7418 * returned. 7419 * 7420 * This function is not invoked during READDIR reply decoding, but 7421 * rather whenever an application invokes the getdents(2) system call 7422 * on a directory already in our cache. 7423 */ 7424 int nfs4_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry, 7425 bool plus) 7426 { 7427 unsigned int savep; 7428 uint32_t bitmap[3] = {0}; 7429 uint32_t len; 7430 uint64_t new_cookie; 7431 __be32 *p = xdr_inline_decode(xdr, 4); 7432 if (unlikely(!p)) 7433 return -EAGAIN; 7434 if (*p == xdr_zero) { 7435 p = xdr_inline_decode(xdr, 4); 7436 if (unlikely(!p)) 7437 return -EAGAIN; 7438 if (*p == xdr_zero) 7439 return -EAGAIN; 7440 entry->eof = 1; 7441 return -EBADCOOKIE; 7442 } 7443 7444 p = xdr_inline_decode(xdr, 12); 7445 if (unlikely(!p)) 7446 return -EAGAIN; 7447 p = xdr_decode_hyper(p, &new_cookie); 7448 entry->len = be32_to_cpup(p); 7449 7450 p = xdr_inline_decode(xdr, entry->len); 7451 if (unlikely(!p)) 7452 return -EAGAIN; 7453 entry->name = (const char *) p; 7454 7455 /* 7456 * In case the server doesn't return an inode number, 7457 * we fake one here. (We don't use inode number 0, 7458 * since glibc seems to choke on it...) 7459 */ 7460 entry->ino = 1; 7461 entry->fattr->valid = 0; 7462 7463 if (decode_attr_bitmap(xdr, bitmap) < 0) 7464 return -EAGAIN; 7465 7466 if (decode_attr_length(xdr, &len, &savep) < 0) 7467 return -EAGAIN; 7468 7469 if (decode_getfattr_attrs(xdr, bitmap, entry->fattr, entry->fh, 7470 NULL, entry->fattr->label, entry->server) < 0) 7471 return -EAGAIN; 7472 if (entry->fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID) 7473 entry->ino = entry->fattr->mounted_on_fileid; 7474 else if (entry->fattr->valid & NFS_ATTR_FATTR_FILEID) 7475 entry->ino = entry->fattr->fileid; 7476 7477 entry->d_type = DT_UNKNOWN; 7478 if (entry->fattr->valid & NFS_ATTR_FATTR_TYPE) 7479 entry->d_type = nfs_umode_to_dtype(entry->fattr->mode); 7480 7481 entry->prev_cookie = entry->cookie; 7482 entry->cookie = new_cookie; 7483 7484 return 0; 7485 } 7486 7487 /* 7488 * We need to translate between nfs status return values and 7489 * the local errno values which may not be the same. 7490 */ 7491 static struct { 7492 int stat; 7493 int errno; 7494 } nfs_errtbl[] = { 7495 { NFS4_OK, 0 }, 7496 { NFS4ERR_PERM, -EPERM }, 7497 { NFS4ERR_NOENT, -ENOENT }, 7498 { NFS4ERR_IO, -errno_NFSERR_IO}, 7499 { NFS4ERR_NXIO, -ENXIO }, 7500 { NFS4ERR_ACCESS, -EACCES }, 7501 { NFS4ERR_EXIST, -EEXIST }, 7502 { NFS4ERR_XDEV, -EXDEV }, 7503 { NFS4ERR_NOTDIR, -ENOTDIR }, 7504 { NFS4ERR_ISDIR, -EISDIR }, 7505 { NFS4ERR_INVAL, -EINVAL }, 7506 { NFS4ERR_FBIG, -EFBIG }, 7507 { NFS4ERR_NOSPC, -ENOSPC }, 7508 { NFS4ERR_ROFS, -EROFS }, 7509 { NFS4ERR_MLINK, -EMLINK }, 7510 { NFS4ERR_NAMETOOLONG, -ENAMETOOLONG }, 7511 { NFS4ERR_NOTEMPTY, -ENOTEMPTY }, 7512 { NFS4ERR_DQUOT, -EDQUOT }, 7513 { NFS4ERR_STALE, -ESTALE }, 7514 { NFS4ERR_BADHANDLE, -EBADHANDLE }, 7515 { NFS4ERR_BAD_COOKIE, -EBADCOOKIE }, 7516 { NFS4ERR_NOTSUPP, -ENOTSUPP }, 7517 { NFS4ERR_TOOSMALL, -ETOOSMALL }, 7518 { NFS4ERR_SERVERFAULT, -EREMOTEIO }, 7519 { NFS4ERR_BADTYPE, -EBADTYPE }, 7520 { NFS4ERR_LOCKED, -EAGAIN }, 7521 { NFS4ERR_SYMLINK, -ELOOP }, 7522 { NFS4ERR_OP_ILLEGAL, -EOPNOTSUPP }, 7523 { NFS4ERR_DEADLOCK, -EDEADLK }, 7524 { NFS4ERR_NOXATTR, -ENODATA }, 7525 { NFS4ERR_XATTR2BIG, -E2BIG }, 7526 { -1, -EIO } 7527 }; 7528 7529 /* 7530 * Convert an NFS error code to a local one. 7531 * This one is used jointly by NFSv2 and NFSv3. 7532 */ 7533 static int 7534 nfs4_stat_to_errno(int stat) 7535 { 7536 int i; 7537 for (i = 0; nfs_errtbl[i].stat != -1; i++) { 7538 if (nfs_errtbl[i].stat == stat) 7539 return nfs_errtbl[i].errno; 7540 } 7541 if (stat <= 10000 || stat > 10100) { 7542 /* The server is looney tunes. */ 7543 return -EREMOTEIO; 7544 } 7545 /* If we cannot translate the error, the recovery routines should 7546 * handle it. 7547 * Note: remaining NFSv4 error codes have values > 10000, so should 7548 * not conflict with native Linux error codes. 7549 */ 7550 return -stat; 7551 } 7552 7553 #ifdef CONFIG_NFS_V4_2 7554 #include "nfs42xdr.c" 7555 #endif /* CONFIG_NFS_V4_2 */ 7556 7557 #define PROC(proc, argtype, restype) \ 7558 [NFSPROC4_CLNT_##proc] = { \ 7559 .p_proc = NFSPROC4_COMPOUND, \ 7560 .p_encode = nfs4_xdr_##argtype, \ 7561 .p_decode = nfs4_xdr_##restype, \ 7562 .p_arglen = NFS4_##argtype##_sz, \ 7563 .p_replen = NFS4_##restype##_sz, \ 7564 .p_statidx = NFSPROC4_CLNT_##proc, \ 7565 .p_name = #proc, \ 7566 } 7567 7568 #define STUB(proc) \ 7569 [NFSPROC4_CLNT_##proc] = { \ 7570 .p_name = #proc, \ 7571 } 7572 7573 #if defined(CONFIG_NFS_V4_1) 7574 #define PROC41(proc, argtype, restype) \ 7575 PROC(proc, argtype, restype) 7576 #else 7577 #define PROC41(proc, argtype, restype) \ 7578 STUB(proc) 7579 #endif 7580 7581 #if defined(CONFIG_NFS_V4_2) 7582 #define PROC42(proc, argtype, restype) \ 7583 PROC(proc, argtype, restype) 7584 #else 7585 #define PROC42(proc, argtype, restype) \ 7586 STUB(proc) 7587 #endif 7588 7589 const struct rpc_procinfo nfs4_procedures[] = { 7590 PROC(READ, enc_read, dec_read), 7591 PROC(WRITE, enc_write, dec_write), 7592 PROC(COMMIT, enc_commit, dec_commit), 7593 PROC(OPEN, enc_open, dec_open), 7594 PROC(OPEN_CONFIRM, enc_open_confirm, dec_open_confirm), 7595 PROC(OPEN_NOATTR, enc_open_noattr, dec_open_noattr), 7596 PROC(OPEN_DOWNGRADE, enc_open_downgrade, dec_open_downgrade), 7597 PROC(CLOSE, enc_close, dec_close), 7598 PROC(SETATTR, enc_setattr, dec_setattr), 7599 PROC(FSINFO, enc_fsinfo, dec_fsinfo), 7600 PROC(RENEW, enc_renew, dec_renew), 7601 PROC(SETCLIENTID, enc_setclientid, dec_setclientid), 7602 PROC(SETCLIENTID_CONFIRM, enc_setclientid_confirm, dec_setclientid_confirm), 7603 PROC(LOCK, enc_lock, dec_lock), 7604 PROC(LOCKT, enc_lockt, dec_lockt), 7605 PROC(LOCKU, enc_locku, dec_locku), 7606 PROC(ACCESS, enc_access, dec_access), 7607 PROC(GETATTR, enc_getattr, dec_getattr), 7608 PROC(LOOKUP, enc_lookup, dec_lookup), 7609 PROC(LOOKUP_ROOT, enc_lookup_root, dec_lookup_root), 7610 PROC(REMOVE, enc_remove, dec_remove), 7611 PROC(RENAME, enc_rename, dec_rename), 7612 PROC(LINK, enc_link, dec_link), 7613 PROC(SYMLINK, enc_symlink, dec_symlink), 7614 PROC(CREATE, enc_create, dec_create), 7615 PROC(PATHCONF, enc_pathconf, dec_pathconf), 7616 PROC(STATFS, enc_statfs, dec_statfs), 7617 PROC(READLINK, enc_readlink, dec_readlink), 7618 PROC(READDIR, enc_readdir, dec_readdir), 7619 PROC(SERVER_CAPS, enc_server_caps, dec_server_caps), 7620 PROC(DELEGRETURN, enc_delegreturn, dec_delegreturn), 7621 PROC(GETACL, enc_getacl, dec_getacl), 7622 PROC(SETACL, enc_setacl, dec_setacl), 7623 PROC(FS_LOCATIONS, enc_fs_locations, dec_fs_locations), 7624 PROC(RELEASE_LOCKOWNER, enc_release_lockowner, dec_release_lockowner), 7625 PROC(SECINFO, enc_secinfo, dec_secinfo), 7626 PROC(FSID_PRESENT, enc_fsid_present, dec_fsid_present), 7627 PROC41(EXCHANGE_ID, enc_exchange_id, dec_exchange_id), 7628 PROC41(CREATE_SESSION, enc_create_session, dec_create_session), 7629 PROC41(DESTROY_SESSION, enc_destroy_session, dec_destroy_session), 7630 PROC41(SEQUENCE, enc_sequence, dec_sequence), 7631 PROC(GET_LEASE_TIME, enc_get_lease_time, dec_get_lease_time), 7632 PROC41(RECLAIM_COMPLETE,enc_reclaim_complete, dec_reclaim_complete), 7633 PROC41(GETDEVICEINFO, enc_getdeviceinfo, dec_getdeviceinfo), 7634 PROC41(LAYOUTGET, enc_layoutget, dec_layoutget), 7635 PROC41(LAYOUTCOMMIT, enc_layoutcommit, dec_layoutcommit), 7636 PROC41(LAYOUTRETURN, enc_layoutreturn, dec_layoutreturn), 7637 PROC41(SECINFO_NO_NAME, enc_secinfo_no_name, dec_secinfo_no_name), 7638 PROC41(TEST_STATEID, enc_test_stateid, dec_test_stateid), 7639 PROC41(FREE_STATEID, enc_free_stateid, dec_free_stateid), 7640 STUB(GETDEVICELIST), 7641 PROC41(BIND_CONN_TO_SESSION, 7642 enc_bind_conn_to_session, dec_bind_conn_to_session), 7643 PROC41(DESTROY_CLIENTID,enc_destroy_clientid, dec_destroy_clientid), 7644 PROC42(SEEK, enc_seek, dec_seek), 7645 PROC42(ALLOCATE, enc_allocate, dec_allocate), 7646 PROC42(DEALLOCATE, enc_deallocate, dec_deallocate), 7647 PROC42(LAYOUTSTATS, enc_layoutstats, dec_layoutstats), 7648 PROC42(CLONE, enc_clone, dec_clone), 7649 PROC42(COPY, enc_copy, dec_copy), 7650 PROC42(OFFLOAD_CANCEL, enc_offload_cancel, dec_offload_cancel), 7651 PROC42(COPY_NOTIFY, enc_copy_notify, dec_copy_notify), 7652 PROC(LOOKUPP, enc_lookupp, dec_lookupp), 7653 PROC42(LAYOUTERROR, enc_layouterror, dec_layouterror), 7654 PROC42(GETXATTR, enc_getxattr, dec_getxattr), 7655 PROC42(SETXATTR, enc_setxattr, dec_setxattr), 7656 PROC42(LISTXATTRS, enc_listxattrs, dec_listxattrs), 7657 PROC42(REMOVEXATTR, enc_removexattr, dec_removexattr), 7658 PROC42(READ_PLUS, enc_read_plus, dec_read_plus), 7659 }; 7660 7661 static unsigned int nfs_version4_counts[ARRAY_SIZE(nfs4_procedures)]; 7662 const struct rpc_version nfs_version4 = { 7663 .number = 4, 7664 .nrprocs = ARRAY_SIZE(nfs4_procedures), 7665 .procs = nfs4_procedures, 7666 .counts = nfs_version4_counts, 7667 }; 7668