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; 1609 uint32_t maxcount = readdir->count; 1610 __be32 *p, verf[2]; 1611 uint32_t attrlen = 0; 1612 unsigned int i; 1613 1614 if (readdir->plus) { 1615 attrs[0] |= FATTR4_WORD0_TYPE|FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE| 1616 FATTR4_WORD0_FSID|FATTR4_WORD0_FILEHANDLE|FATTR4_WORD0_FILEID; 1617 attrs[1] |= FATTR4_WORD1_MODE|FATTR4_WORD1_NUMLINKS|FATTR4_WORD1_OWNER| 1618 FATTR4_WORD1_OWNER_GROUP|FATTR4_WORD1_RAWDEV| 1619 FATTR4_WORD1_SPACE_USED|FATTR4_WORD1_TIME_ACCESS| 1620 FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY; 1621 attrs[2] |= FATTR4_WORD2_SECURITY_LABEL; 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(maxcount); 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 nfs4_acltype_to_bitmap(enum nfs4_acl_type type, __u32 bitmap[2]) 1684 { 1685 switch (type) { 1686 default: 1687 bitmap[0] = FATTR4_WORD0_ACL; 1688 bitmap[1] = 0; 1689 break; 1690 case NFS4ACL_DACL: 1691 bitmap[0] = 0; 1692 bitmap[1] = FATTR4_WORD1_DACL; 1693 break; 1694 case NFS4ACL_SACL: 1695 bitmap[0] = 0; 1696 bitmap[1] = FATTR4_WORD1_SACL; 1697 } 1698 } 1699 1700 static void encode_setacl(struct xdr_stream *xdr, 1701 const struct nfs_setaclargs *arg, 1702 struct compound_hdr *hdr) 1703 { 1704 __u32 bitmap[2]; 1705 1706 nfs4_acltype_to_bitmap(arg->acl_type, bitmap); 1707 1708 encode_op_hdr(xdr, OP_SETATTR, decode_setacl_maxsz, hdr); 1709 encode_nfs4_stateid(xdr, &zero_stateid); 1710 xdr_encode_bitmap4(xdr, bitmap, ARRAY_SIZE(bitmap)); 1711 encode_uint32(xdr, arg->acl_len); 1712 xdr_write_pages(xdr, arg->acl_pages, 0, arg->acl_len); 1713 } 1714 1715 static void 1716 encode_savefh(struct xdr_stream *xdr, struct compound_hdr *hdr) 1717 { 1718 encode_op_hdr(xdr, OP_SAVEFH, decode_savefh_maxsz, hdr); 1719 } 1720 1721 static void encode_setattr(struct xdr_stream *xdr, const struct nfs_setattrargs *arg, const struct nfs_server *server, struct compound_hdr *hdr) 1722 { 1723 encode_op_hdr(xdr, OP_SETATTR, decode_setattr_maxsz, hdr); 1724 encode_nfs4_stateid(xdr, &arg->stateid); 1725 encode_attrs(xdr, arg->iap, arg->label, NULL, server, 1726 server->attr_bitmask); 1727 } 1728 1729 static void encode_setclientid(struct xdr_stream *xdr, const struct nfs4_setclientid *setclientid, struct compound_hdr *hdr) 1730 { 1731 __be32 *p; 1732 1733 encode_op_hdr(xdr, OP_SETCLIENTID, decode_setclientid_maxsz, hdr); 1734 encode_nfs4_verifier(xdr, setclientid->sc_verifier); 1735 1736 encode_string(xdr, strlen(setclientid->sc_clnt->cl_owner_id), 1737 setclientid->sc_clnt->cl_owner_id); 1738 p = reserve_space(xdr, 4); 1739 *p = cpu_to_be32(setclientid->sc_prog); 1740 encode_string(xdr, setclientid->sc_netid_len, setclientid->sc_netid); 1741 encode_string(xdr, setclientid->sc_uaddr_len, setclientid->sc_uaddr); 1742 p = reserve_space(xdr, 4); 1743 *p = cpu_to_be32(setclientid->sc_clnt->cl_cb_ident); 1744 } 1745 1746 static void encode_setclientid_confirm(struct xdr_stream *xdr, const struct nfs4_setclientid_res *arg, struct compound_hdr *hdr) 1747 { 1748 encode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM, 1749 decode_setclientid_confirm_maxsz, hdr); 1750 encode_uint64(xdr, arg->clientid); 1751 encode_nfs4_verifier(xdr, &arg->confirm); 1752 } 1753 1754 static void encode_write(struct xdr_stream *xdr, const struct nfs_pgio_args *args, 1755 struct compound_hdr *hdr) 1756 { 1757 __be32 *p; 1758 1759 encode_op_hdr(xdr, OP_WRITE, decode_write_maxsz, hdr); 1760 encode_nfs4_stateid(xdr, &args->stateid); 1761 1762 p = reserve_space(xdr, 16); 1763 p = xdr_encode_hyper(p, args->offset); 1764 *p++ = cpu_to_be32(args->stable); 1765 *p = cpu_to_be32(args->count); 1766 1767 xdr_write_pages(xdr, args->pages, args->pgbase, args->count); 1768 } 1769 1770 static void encode_delegreturn(struct xdr_stream *xdr, const nfs4_stateid *stateid, struct compound_hdr *hdr) 1771 { 1772 encode_op_hdr(xdr, OP_DELEGRETURN, decode_delegreturn_maxsz, hdr); 1773 encode_nfs4_stateid(xdr, stateid); 1774 } 1775 1776 static void encode_secinfo(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr) 1777 { 1778 encode_op_hdr(xdr, OP_SECINFO, decode_secinfo_maxsz, hdr); 1779 encode_string(xdr, name->len, name->name); 1780 } 1781 1782 #if defined(CONFIG_NFS_V4_1) 1783 /* NFSv4.1 operations */ 1784 static void encode_bind_conn_to_session(struct xdr_stream *xdr, 1785 const struct nfs41_bind_conn_to_session_args *args, 1786 struct compound_hdr *hdr) 1787 { 1788 __be32 *p; 1789 1790 encode_op_hdr(xdr, OP_BIND_CONN_TO_SESSION, 1791 decode_bind_conn_to_session_maxsz, hdr); 1792 encode_opaque_fixed(xdr, args->sessionid.data, NFS4_MAX_SESSIONID_LEN); 1793 p = xdr_reserve_space(xdr, 8); 1794 *p++ = cpu_to_be32(args->dir); 1795 *p = (args->use_conn_in_rdma_mode) ? cpu_to_be32(1) : cpu_to_be32(0); 1796 } 1797 1798 static void encode_op_map(struct xdr_stream *xdr, const struct nfs4_op_map *op_map) 1799 { 1800 unsigned int i; 1801 encode_uint32(xdr, NFS4_OP_MAP_NUM_WORDS); 1802 for (i = 0; i < NFS4_OP_MAP_NUM_WORDS; i++) 1803 encode_uint32(xdr, op_map->u.words[i]); 1804 } 1805 1806 static void encode_exchange_id(struct xdr_stream *xdr, 1807 const struct nfs41_exchange_id_args *args, 1808 struct compound_hdr *hdr) 1809 { 1810 __be32 *p; 1811 char impl_name[IMPL_NAME_LIMIT]; 1812 int len = 0; 1813 1814 encode_op_hdr(xdr, OP_EXCHANGE_ID, decode_exchange_id_maxsz, hdr); 1815 encode_nfs4_verifier(xdr, &args->verifier); 1816 1817 encode_string(xdr, strlen(args->client->cl_owner_id), 1818 args->client->cl_owner_id); 1819 1820 encode_uint32(xdr, args->flags); 1821 encode_uint32(xdr, args->state_protect.how); 1822 1823 switch (args->state_protect.how) { 1824 case SP4_NONE: 1825 break; 1826 case SP4_MACH_CRED: 1827 encode_op_map(xdr, &args->state_protect.enforce); 1828 encode_op_map(xdr, &args->state_protect.allow); 1829 break; 1830 default: 1831 WARN_ON_ONCE(1); 1832 break; 1833 } 1834 1835 if (send_implementation_id && 1836 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN) > 1 && 1837 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN) 1838 <= sizeof(impl_name) + 1) 1839 len = snprintf(impl_name, sizeof(impl_name), "%s %s %s %s", 1840 utsname()->sysname, utsname()->release, 1841 utsname()->version, utsname()->machine); 1842 1843 if (len > 0) { 1844 encode_uint32(xdr, 1); /* implementation id array length=1 */ 1845 1846 encode_string(xdr, 1847 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN) - 1, 1848 CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN); 1849 encode_string(xdr, len, impl_name); 1850 /* just send zeros for nii_date - the date is in nii_name */ 1851 p = reserve_space(xdr, 12); 1852 p = xdr_encode_hyper(p, 0); 1853 *p = cpu_to_be32(0); 1854 } else 1855 encode_uint32(xdr, 0); /* implementation id array length=0 */ 1856 } 1857 1858 static void encode_create_session(struct xdr_stream *xdr, 1859 const struct nfs41_create_session_args *args, 1860 struct compound_hdr *hdr) 1861 { 1862 __be32 *p; 1863 struct nfs_client *clp = args->client; 1864 struct rpc_clnt *clnt = clp->cl_rpcclient; 1865 struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id); 1866 u32 max_resp_sz_cached; 1867 1868 /* 1869 * Assumes OPEN is the biggest non-idempotent compound. 1870 * 2 is the verifier. 1871 */ 1872 max_resp_sz_cached = (NFS4_dec_open_sz + RPC_REPHDRSIZE + 2) 1873 * XDR_UNIT + RPC_MAX_AUTH_SIZE; 1874 1875 encode_op_hdr(xdr, OP_CREATE_SESSION, decode_create_session_maxsz, hdr); 1876 p = reserve_space(xdr, 16 + 2*28 + 20 + clnt->cl_nodelen + 12); 1877 p = xdr_encode_hyper(p, args->clientid); 1878 *p++ = cpu_to_be32(args->seqid); /*Sequence id */ 1879 *p++ = cpu_to_be32(args->flags); /*flags */ 1880 1881 /* Fore Channel */ 1882 *p++ = cpu_to_be32(0); /* header padding size */ 1883 *p++ = cpu_to_be32(args->fc_attrs.max_rqst_sz); /* max req size */ 1884 *p++ = cpu_to_be32(args->fc_attrs.max_resp_sz); /* max resp size */ 1885 *p++ = cpu_to_be32(max_resp_sz_cached); /* Max resp sz cached */ 1886 *p++ = cpu_to_be32(args->fc_attrs.max_ops); /* max operations */ 1887 *p++ = cpu_to_be32(args->fc_attrs.max_reqs); /* max requests */ 1888 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */ 1889 1890 /* Back Channel */ 1891 *p++ = cpu_to_be32(0); /* header padding size */ 1892 *p++ = cpu_to_be32(args->bc_attrs.max_rqst_sz); /* max req size */ 1893 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz); /* max resp size */ 1894 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz_cached); /* Max resp sz cached */ 1895 *p++ = cpu_to_be32(args->bc_attrs.max_ops); /* max operations */ 1896 *p++ = cpu_to_be32(args->bc_attrs.max_reqs); /* max requests */ 1897 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */ 1898 1899 *p++ = cpu_to_be32(args->cb_program); /* cb_program */ 1900 *p++ = cpu_to_be32(1); 1901 *p++ = cpu_to_be32(RPC_AUTH_UNIX); /* auth_sys */ 1902 1903 /* authsys_parms rfc1831 */ 1904 *p++ = cpu_to_be32(ktime_to_ns(nn->boot_time)); /* stamp */ 1905 p = xdr_encode_array(p, clnt->cl_nodename, clnt->cl_nodelen); 1906 *p++ = cpu_to_be32(0); /* UID */ 1907 *p++ = cpu_to_be32(0); /* GID */ 1908 *p = cpu_to_be32(0); /* No more gids */ 1909 } 1910 1911 static void encode_destroy_session(struct xdr_stream *xdr, 1912 const struct nfs4_session *session, 1913 struct compound_hdr *hdr) 1914 { 1915 encode_op_hdr(xdr, OP_DESTROY_SESSION, decode_destroy_session_maxsz, hdr); 1916 encode_opaque_fixed(xdr, session->sess_id.data, NFS4_MAX_SESSIONID_LEN); 1917 } 1918 1919 static void encode_destroy_clientid(struct xdr_stream *xdr, 1920 uint64_t clientid, 1921 struct compound_hdr *hdr) 1922 { 1923 encode_op_hdr(xdr, OP_DESTROY_CLIENTID, decode_destroy_clientid_maxsz, hdr); 1924 encode_uint64(xdr, clientid); 1925 } 1926 1927 static void encode_reclaim_complete(struct xdr_stream *xdr, 1928 const struct nfs41_reclaim_complete_args *args, 1929 struct compound_hdr *hdr) 1930 { 1931 encode_op_hdr(xdr, OP_RECLAIM_COMPLETE, decode_reclaim_complete_maxsz, hdr); 1932 encode_uint32(xdr, args->one_fs); 1933 } 1934 #endif /* CONFIG_NFS_V4_1 */ 1935 1936 static void encode_sequence(struct xdr_stream *xdr, 1937 const struct nfs4_sequence_args *args, 1938 struct compound_hdr *hdr) 1939 { 1940 #if defined(CONFIG_NFS_V4_1) 1941 struct nfs4_session *session; 1942 struct nfs4_slot_table *tp; 1943 struct nfs4_slot *slot = args->sa_slot; 1944 __be32 *p; 1945 1946 tp = slot->table; 1947 session = tp->session; 1948 if (!session) 1949 return; 1950 1951 encode_op_hdr(xdr, OP_SEQUENCE, decode_sequence_maxsz, hdr); 1952 1953 /* 1954 * Sessionid + seqid + slotid + max slotid + cache_this 1955 */ 1956 dprintk("%s: sessionid=%u:%u:%u:%u seqid=%d slotid=%d " 1957 "max_slotid=%d cache_this=%d\n", 1958 __func__, 1959 ((u32 *)session->sess_id.data)[0], 1960 ((u32 *)session->sess_id.data)[1], 1961 ((u32 *)session->sess_id.data)[2], 1962 ((u32 *)session->sess_id.data)[3], 1963 slot->seq_nr, slot->slot_nr, 1964 tp->highest_used_slotid, args->sa_cache_this); 1965 p = reserve_space(xdr, NFS4_MAX_SESSIONID_LEN + 16); 1966 p = xdr_encode_opaque_fixed(p, session->sess_id.data, NFS4_MAX_SESSIONID_LEN); 1967 *p++ = cpu_to_be32(slot->seq_nr); 1968 *p++ = cpu_to_be32(slot->slot_nr); 1969 *p++ = cpu_to_be32(tp->highest_used_slotid); 1970 *p = cpu_to_be32(args->sa_cache_this); 1971 #endif /* CONFIG_NFS_V4_1 */ 1972 } 1973 1974 #ifdef CONFIG_NFS_V4_1 1975 static void 1976 encode_getdeviceinfo(struct xdr_stream *xdr, 1977 const struct nfs4_getdeviceinfo_args *args, 1978 struct compound_hdr *hdr) 1979 { 1980 __be32 *p; 1981 1982 encode_op_hdr(xdr, OP_GETDEVICEINFO, decode_getdeviceinfo_maxsz, hdr); 1983 p = reserve_space(xdr, NFS4_DEVICEID4_SIZE + 4 + 4); 1984 p = xdr_encode_opaque_fixed(p, args->pdev->dev_id.data, 1985 NFS4_DEVICEID4_SIZE); 1986 *p++ = cpu_to_be32(args->pdev->layout_type); 1987 *p++ = cpu_to_be32(args->pdev->maxcount); /* gdia_maxcount */ 1988 1989 p = reserve_space(xdr, 4 + 4); 1990 *p++ = cpu_to_be32(1); /* bitmap length */ 1991 *p++ = cpu_to_be32(args->notify_types); 1992 } 1993 1994 static void 1995 encode_layoutget(struct xdr_stream *xdr, 1996 const struct nfs4_layoutget_args *args, 1997 struct compound_hdr *hdr) 1998 { 1999 __be32 *p; 2000 2001 encode_op_hdr(xdr, OP_LAYOUTGET, decode_layoutget_maxsz, hdr); 2002 p = reserve_space(xdr, 36); 2003 *p++ = cpu_to_be32(0); /* Signal layout available */ 2004 *p++ = cpu_to_be32(args->type); 2005 *p++ = cpu_to_be32(args->range.iomode); 2006 p = xdr_encode_hyper(p, args->range.offset); 2007 p = xdr_encode_hyper(p, args->range.length); 2008 p = xdr_encode_hyper(p, args->minlength); 2009 encode_nfs4_stateid(xdr, &args->stateid); 2010 encode_uint32(xdr, args->maxcount); 2011 2012 dprintk("%s: 1st type:0x%x iomode:%d off:%lu len:%lu mc:%d\n", 2013 __func__, 2014 args->type, 2015 args->range.iomode, 2016 (unsigned long)args->range.offset, 2017 (unsigned long)args->range.length, 2018 args->maxcount); 2019 } 2020 2021 static int 2022 encode_layoutcommit(struct xdr_stream *xdr, 2023 struct inode *inode, 2024 const struct nfs4_layoutcommit_args *args, 2025 struct compound_hdr *hdr) 2026 { 2027 __be32 *p; 2028 2029 dprintk("%s: lbw: %llu type: %d\n", __func__, args->lastbytewritten, 2030 NFS_SERVER(args->inode)->pnfs_curr_ld->id); 2031 2032 encode_op_hdr(xdr, OP_LAYOUTCOMMIT, decode_layoutcommit_maxsz, hdr); 2033 p = reserve_space(xdr, 20); 2034 /* Only whole file layouts */ 2035 p = xdr_encode_hyper(p, 0); /* offset */ 2036 p = xdr_encode_hyper(p, args->lastbytewritten + 1); /* length */ 2037 *p = cpu_to_be32(0); /* reclaim */ 2038 encode_nfs4_stateid(xdr, &args->stateid); 2039 if (args->lastbytewritten != U64_MAX) { 2040 p = reserve_space(xdr, 20); 2041 *p++ = cpu_to_be32(1); /* newoffset = TRUE */ 2042 p = xdr_encode_hyper(p, args->lastbytewritten); 2043 } else { 2044 p = reserve_space(xdr, 12); 2045 *p++ = cpu_to_be32(0); /* newoffset = FALSE */ 2046 } 2047 *p++ = cpu_to_be32(0); /* Never send time_modify_changed */ 2048 *p++ = cpu_to_be32(NFS_SERVER(args->inode)->pnfs_curr_ld->id);/* type */ 2049 2050 encode_uint32(xdr, args->layoutupdate_len); 2051 if (args->layoutupdate_pages) 2052 xdr_write_pages(xdr, args->layoutupdate_pages, 0, 2053 args->layoutupdate_len); 2054 2055 return 0; 2056 } 2057 2058 static void 2059 encode_layoutreturn(struct xdr_stream *xdr, 2060 const struct nfs4_layoutreturn_args *args, 2061 struct compound_hdr *hdr) 2062 { 2063 __be32 *p; 2064 2065 encode_op_hdr(xdr, OP_LAYOUTRETURN, decode_layoutreturn_maxsz, hdr); 2066 p = reserve_space(xdr, 16); 2067 *p++ = cpu_to_be32(0); /* reclaim. always 0 for now */ 2068 *p++ = cpu_to_be32(args->layout_type); 2069 *p++ = cpu_to_be32(args->range.iomode); 2070 *p = cpu_to_be32(RETURN_FILE); 2071 p = reserve_space(xdr, 16); 2072 p = xdr_encode_hyper(p, args->range.offset); 2073 p = xdr_encode_hyper(p, args->range.length); 2074 spin_lock(&args->inode->i_lock); 2075 encode_nfs4_stateid(xdr, &args->stateid); 2076 spin_unlock(&args->inode->i_lock); 2077 if (args->ld_private->ops && args->ld_private->ops->encode) 2078 args->ld_private->ops->encode(xdr, args, args->ld_private); 2079 else 2080 encode_uint32(xdr, 0); 2081 } 2082 2083 static int 2084 encode_secinfo_no_name(struct xdr_stream *xdr, 2085 const struct nfs41_secinfo_no_name_args *args, 2086 struct compound_hdr *hdr) 2087 { 2088 encode_op_hdr(xdr, OP_SECINFO_NO_NAME, decode_secinfo_no_name_maxsz, hdr); 2089 encode_uint32(xdr, args->style); 2090 return 0; 2091 } 2092 2093 static void encode_test_stateid(struct xdr_stream *xdr, 2094 const struct nfs41_test_stateid_args *args, 2095 struct compound_hdr *hdr) 2096 { 2097 encode_op_hdr(xdr, OP_TEST_STATEID, decode_test_stateid_maxsz, hdr); 2098 encode_uint32(xdr, 1); 2099 encode_nfs4_stateid(xdr, args->stateid); 2100 } 2101 2102 static void encode_free_stateid(struct xdr_stream *xdr, 2103 const struct nfs41_free_stateid_args *args, 2104 struct compound_hdr *hdr) 2105 { 2106 encode_op_hdr(xdr, OP_FREE_STATEID, decode_free_stateid_maxsz, hdr); 2107 encode_nfs4_stateid(xdr, &args->stateid); 2108 } 2109 #else 2110 static inline void 2111 encode_layoutreturn(struct xdr_stream *xdr, 2112 const struct nfs4_layoutreturn_args *args, 2113 struct compound_hdr *hdr) 2114 { 2115 } 2116 2117 static void 2118 encode_layoutget(struct xdr_stream *xdr, 2119 const struct nfs4_layoutget_args *args, 2120 struct compound_hdr *hdr) 2121 { 2122 } 2123 #endif /* CONFIG_NFS_V4_1 */ 2124 2125 /* 2126 * END OF "GENERIC" ENCODE ROUTINES. 2127 */ 2128 2129 static u32 nfs4_xdr_minorversion(const struct nfs4_sequence_args *args) 2130 { 2131 #if defined(CONFIG_NFS_V4_1) 2132 struct nfs4_session *session = args->sa_slot->table->session; 2133 if (session) 2134 return session->clp->cl_mvops->minor_version; 2135 #endif /* CONFIG_NFS_V4_1 */ 2136 return 0; 2137 } 2138 2139 /* 2140 * Encode an ACCESS request 2141 */ 2142 static void nfs4_xdr_enc_access(struct rpc_rqst *req, struct xdr_stream *xdr, 2143 const void *data) 2144 { 2145 const struct nfs4_accessargs *args = data; 2146 struct compound_hdr hdr = { 2147 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2148 }; 2149 2150 encode_compound_hdr(xdr, req, &hdr); 2151 encode_sequence(xdr, &args->seq_args, &hdr); 2152 encode_putfh(xdr, args->fh, &hdr); 2153 encode_access(xdr, args->access, &hdr); 2154 if (args->bitmask) 2155 encode_getfattr(xdr, args->bitmask, &hdr); 2156 encode_nops(&hdr); 2157 } 2158 2159 /* 2160 * Encode LOOKUP request 2161 */ 2162 static void nfs4_xdr_enc_lookup(struct rpc_rqst *req, struct xdr_stream *xdr, 2163 const void *data) 2164 { 2165 const struct nfs4_lookup_arg *args = data; 2166 struct compound_hdr hdr = { 2167 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2168 }; 2169 2170 encode_compound_hdr(xdr, req, &hdr); 2171 encode_sequence(xdr, &args->seq_args, &hdr); 2172 encode_putfh(xdr, args->dir_fh, &hdr); 2173 encode_lookup(xdr, args->name, &hdr); 2174 encode_getfh(xdr, &hdr); 2175 encode_getfattr(xdr, args->bitmask, &hdr); 2176 encode_nops(&hdr); 2177 } 2178 2179 /* 2180 * Encode LOOKUPP request 2181 */ 2182 static void nfs4_xdr_enc_lookupp(struct rpc_rqst *req, struct xdr_stream *xdr, 2183 const void *data) 2184 { 2185 const struct nfs4_lookupp_arg *args = data; 2186 struct compound_hdr hdr = { 2187 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2188 }; 2189 2190 encode_compound_hdr(xdr, req, &hdr); 2191 encode_sequence(xdr, &args->seq_args, &hdr); 2192 encode_putfh(xdr, args->fh, &hdr); 2193 encode_lookupp(xdr, &hdr); 2194 encode_getfh(xdr, &hdr); 2195 encode_getfattr(xdr, args->bitmask, &hdr); 2196 encode_nops(&hdr); 2197 } 2198 2199 /* 2200 * Encode LOOKUP_ROOT request 2201 */ 2202 static void nfs4_xdr_enc_lookup_root(struct rpc_rqst *req, 2203 struct xdr_stream *xdr, 2204 const void *data) 2205 { 2206 const struct nfs4_lookup_root_arg *args = data; 2207 struct compound_hdr hdr = { 2208 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2209 }; 2210 2211 encode_compound_hdr(xdr, req, &hdr); 2212 encode_sequence(xdr, &args->seq_args, &hdr); 2213 encode_putrootfh(xdr, &hdr); 2214 encode_getfh(xdr, &hdr); 2215 encode_getfattr(xdr, args->bitmask, &hdr); 2216 encode_nops(&hdr); 2217 } 2218 2219 /* 2220 * Encode REMOVE request 2221 */ 2222 static void nfs4_xdr_enc_remove(struct rpc_rqst *req, struct xdr_stream *xdr, 2223 const void *data) 2224 { 2225 const struct nfs_removeargs *args = data; 2226 struct compound_hdr hdr = { 2227 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2228 }; 2229 2230 encode_compound_hdr(xdr, req, &hdr); 2231 encode_sequence(xdr, &args->seq_args, &hdr); 2232 encode_putfh(xdr, args->fh, &hdr); 2233 encode_remove(xdr, &args->name, &hdr); 2234 encode_nops(&hdr); 2235 } 2236 2237 /* 2238 * Encode RENAME request 2239 */ 2240 static void nfs4_xdr_enc_rename(struct rpc_rqst *req, struct xdr_stream *xdr, 2241 const void *data) 2242 { 2243 const struct nfs_renameargs *args = data; 2244 struct compound_hdr hdr = { 2245 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2246 }; 2247 2248 encode_compound_hdr(xdr, req, &hdr); 2249 encode_sequence(xdr, &args->seq_args, &hdr); 2250 encode_putfh(xdr, args->old_dir, &hdr); 2251 encode_savefh(xdr, &hdr); 2252 encode_putfh(xdr, args->new_dir, &hdr); 2253 encode_rename(xdr, args->old_name, args->new_name, &hdr); 2254 encode_nops(&hdr); 2255 } 2256 2257 /* 2258 * Encode LINK request 2259 */ 2260 static void nfs4_xdr_enc_link(struct rpc_rqst *req, struct xdr_stream *xdr, 2261 const void *data) 2262 { 2263 const struct nfs4_link_arg *args = data; 2264 struct compound_hdr hdr = { 2265 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2266 }; 2267 2268 encode_compound_hdr(xdr, req, &hdr); 2269 encode_sequence(xdr, &args->seq_args, &hdr); 2270 encode_putfh(xdr, args->fh, &hdr); 2271 encode_savefh(xdr, &hdr); 2272 encode_putfh(xdr, args->dir_fh, &hdr); 2273 encode_link(xdr, args->name, &hdr); 2274 encode_restorefh(xdr, &hdr); 2275 encode_getfattr(xdr, args->bitmask, &hdr); 2276 encode_nops(&hdr); 2277 } 2278 2279 /* 2280 * Encode CREATE request 2281 */ 2282 static void nfs4_xdr_enc_create(struct rpc_rqst *req, struct xdr_stream *xdr, 2283 const void *data) 2284 { 2285 const struct nfs4_create_arg *args = data; 2286 struct compound_hdr hdr = { 2287 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2288 }; 2289 2290 encode_compound_hdr(xdr, req, &hdr); 2291 encode_sequence(xdr, &args->seq_args, &hdr); 2292 encode_putfh(xdr, args->dir_fh, &hdr); 2293 encode_create(xdr, args, &hdr); 2294 encode_getfh(xdr, &hdr); 2295 encode_getfattr(xdr, args->bitmask, &hdr); 2296 encode_nops(&hdr); 2297 } 2298 2299 /* 2300 * Encode SYMLINK request 2301 */ 2302 static void nfs4_xdr_enc_symlink(struct rpc_rqst *req, struct xdr_stream *xdr, 2303 const void *data) 2304 { 2305 const struct nfs4_create_arg *args = data; 2306 2307 nfs4_xdr_enc_create(req, xdr, args); 2308 } 2309 2310 /* 2311 * Encode GETATTR request 2312 */ 2313 static void nfs4_xdr_enc_getattr(struct rpc_rqst *req, struct xdr_stream *xdr, 2314 const void *data) 2315 { 2316 const struct nfs4_getattr_arg *args = data; 2317 struct compound_hdr hdr = { 2318 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2319 }; 2320 2321 encode_compound_hdr(xdr, req, &hdr); 2322 encode_sequence(xdr, &args->seq_args, &hdr); 2323 encode_putfh(xdr, args->fh, &hdr); 2324 encode_getfattr(xdr, args->bitmask, &hdr); 2325 encode_nops(&hdr); 2326 } 2327 2328 /* 2329 * Encode a CLOSE request 2330 */ 2331 static void nfs4_xdr_enc_close(struct rpc_rqst *req, struct xdr_stream *xdr, 2332 const void *data) 2333 { 2334 const struct nfs_closeargs *args = data; 2335 struct compound_hdr hdr = { 2336 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2337 }; 2338 2339 encode_compound_hdr(xdr, req, &hdr); 2340 encode_sequence(xdr, &args->seq_args, &hdr); 2341 encode_putfh(xdr, args->fh, &hdr); 2342 if (args->lr_args) 2343 encode_layoutreturn(xdr, args->lr_args, &hdr); 2344 if (args->bitmask != NULL) 2345 encode_getfattr(xdr, args->bitmask, &hdr); 2346 encode_close(xdr, args, &hdr); 2347 encode_nops(&hdr); 2348 } 2349 2350 /* 2351 * Encode an OPEN request 2352 */ 2353 static void nfs4_xdr_enc_open(struct rpc_rqst *req, struct xdr_stream *xdr, 2354 const void *data) 2355 { 2356 const struct nfs_openargs *args = data; 2357 struct compound_hdr hdr = { 2358 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2359 }; 2360 2361 encode_compound_hdr(xdr, req, &hdr); 2362 encode_sequence(xdr, &args->seq_args, &hdr); 2363 encode_putfh(xdr, args->fh, &hdr); 2364 encode_open(xdr, args, &hdr); 2365 encode_getfh(xdr, &hdr); 2366 if (args->access) 2367 encode_access(xdr, args->access, &hdr); 2368 encode_getfattr_open(xdr, args->bitmask, args->open_bitmap, &hdr); 2369 if (args->lg_args) { 2370 encode_layoutget(xdr, args->lg_args, &hdr); 2371 rpc_prepare_reply_pages(req, args->lg_args->layout.pages, 0, 2372 args->lg_args->layout.pglen, 2373 hdr.replen - pagepad_maxsz); 2374 } 2375 encode_nops(&hdr); 2376 } 2377 2378 /* 2379 * Encode an OPEN_CONFIRM request 2380 */ 2381 static void nfs4_xdr_enc_open_confirm(struct rpc_rqst *req, 2382 struct xdr_stream *xdr, 2383 const void *data) 2384 { 2385 const struct nfs_open_confirmargs *args = data; 2386 struct compound_hdr hdr = { 2387 .nops = 0, 2388 }; 2389 2390 encode_compound_hdr(xdr, req, &hdr); 2391 encode_putfh(xdr, args->fh, &hdr); 2392 encode_open_confirm(xdr, args, &hdr); 2393 encode_nops(&hdr); 2394 } 2395 2396 /* 2397 * Encode an OPEN request with no attributes. 2398 */ 2399 static void nfs4_xdr_enc_open_noattr(struct rpc_rqst *req, 2400 struct xdr_stream *xdr, 2401 const void *data) 2402 { 2403 const struct nfs_openargs *args = data; 2404 struct compound_hdr hdr = { 2405 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2406 }; 2407 2408 encode_compound_hdr(xdr, req, &hdr); 2409 encode_sequence(xdr, &args->seq_args, &hdr); 2410 encode_putfh(xdr, args->fh, &hdr); 2411 encode_open(xdr, args, &hdr); 2412 if (args->access) 2413 encode_access(xdr, args->access, &hdr); 2414 encode_getfattr_open(xdr, args->bitmask, args->open_bitmap, &hdr); 2415 if (args->lg_args) { 2416 encode_layoutget(xdr, args->lg_args, &hdr); 2417 rpc_prepare_reply_pages(req, args->lg_args->layout.pages, 0, 2418 args->lg_args->layout.pglen, 2419 hdr.replen - pagepad_maxsz); 2420 } 2421 encode_nops(&hdr); 2422 } 2423 2424 /* 2425 * Encode an OPEN_DOWNGRADE request 2426 */ 2427 static void nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req, 2428 struct xdr_stream *xdr, 2429 const void *data) 2430 { 2431 const struct nfs_closeargs *args = data; 2432 struct compound_hdr hdr = { 2433 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2434 }; 2435 2436 encode_compound_hdr(xdr, req, &hdr); 2437 encode_sequence(xdr, &args->seq_args, &hdr); 2438 encode_putfh(xdr, args->fh, &hdr); 2439 if (args->lr_args) 2440 encode_layoutreturn(xdr, args->lr_args, &hdr); 2441 encode_open_downgrade(xdr, args, &hdr); 2442 encode_nops(&hdr); 2443 } 2444 2445 /* 2446 * Encode a LOCK request 2447 */ 2448 static void nfs4_xdr_enc_lock(struct rpc_rqst *req, struct xdr_stream *xdr, 2449 const void *data) 2450 { 2451 const struct nfs_lock_args *args = data; 2452 struct compound_hdr hdr = { 2453 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2454 }; 2455 2456 encode_compound_hdr(xdr, req, &hdr); 2457 encode_sequence(xdr, &args->seq_args, &hdr); 2458 encode_putfh(xdr, args->fh, &hdr); 2459 encode_lock(xdr, args, &hdr); 2460 encode_nops(&hdr); 2461 } 2462 2463 /* 2464 * Encode a LOCKT request 2465 */ 2466 static void nfs4_xdr_enc_lockt(struct rpc_rqst *req, struct xdr_stream *xdr, 2467 const void *data) 2468 { 2469 const struct nfs_lockt_args *args = data; 2470 struct compound_hdr hdr = { 2471 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2472 }; 2473 2474 encode_compound_hdr(xdr, req, &hdr); 2475 encode_sequence(xdr, &args->seq_args, &hdr); 2476 encode_putfh(xdr, args->fh, &hdr); 2477 encode_lockt(xdr, args, &hdr); 2478 encode_nops(&hdr); 2479 } 2480 2481 /* 2482 * Encode a LOCKU request 2483 */ 2484 static void nfs4_xdr_enc_locku(struct rpc_rqst *req, struct xdr_stream *xdr, 2485 const void *data) 2486 { 2487 const struct nfs_locku_args *args = data; 2488 struct compound_hdr hdr = { 2489 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2490 }; 2491 2492 encode_compound_hdr(xdr, req, &hdr); 2493 encode_sequence(xdr, &args->seq_args, &hdr); 2494 encode_putfh(xdr, args->fh, &hdr); 2495 encode_locku(xdr, args, &hdr); 2496 encode_nops(&hdr); 2497 } 2498 2499 static void nfs4_xdr_enc_release_lockowner(struct rpc_rqst *req, 2500 struct xdr_stream *xdr, 2501 const void *data) 2502 { 2503 const struct nfs_release_lockowner_args *args = data; 2504 struct compound_hdr hdr = { 2505 .minorversion = 0, 2506 }; 2507 2508 encode_compound_hdr(xdr, req, &hdr); 2509 encode_release_lockowner(xdr, &args->lock_owner, &hdr); 2510 encode_nops(&hdr); 2511 } 2512 2513 /* 2514 * Encode a READLINK request 2515 */ 2516 static void nfs4_xdr_enc_readlink(struct rpc_rqst *req, struct xdr_stream *xdr, 2517 const void *data) 2518 { 2519 const struct nfs4_readlink *args = data; 2520 struct compound_hdr hdr = { 2521 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2522 }; 2523 2524 encode_compound_hdr(xdr, req, &hdr); 2525 encode_sequence(xdr, &args->seq_args, &hdr); 2526 encode_putfh(xdr, args->fh, &hdr); 2527 encode_readlink(xdr, args, req, &hdr); 2528 2529 rpc_prepare_reply_pages(req, args->pages, args->pgbase, 2530 args->pglen, hdr.replen - pagepad_maxsz); 2531 encode_nops(&hdr); 2532 } 2533 2534 /* 2535 * Encode a READDIR request 2536 */ 2537 static void nfs4_xdr_enc_readdir(struct rpc_rqst *req, struct xdr_stream *xdr, 2538 const void *data) 2539 { 2540 const struct nfs4_readdir_arg *args = data; 2541 struct compound_hdr hdr = { 2542 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2543 }; 2544 2545 encode_compound_hdr(xdr, req, &hdr); 2546 encode_sequence(xdr, &args->seq_args, &hdr); 2547 encode_putfh(xdr, args->fh, &hdr); 2548 encode_readdir(xdr, args, req, &hdr); 2549 2550 rpc_prepare_reply_pages(req, args->pages, args->pgbase, 2551 args->count, hdr.replen - pagepad_maxsz); 2552 encode_nops(&hdr); 2553 } 2554 2555 /* 2556 * Encode a READ request 2557 */ 2558 static void nfs4_xdr_enc_read(struct rpc_rqst *req, struct xdr_stream *xdr, 2559 const void *data) 2560 { 2561 const struct nfs_pgio_args *args = data; 2562 struct compound_hdr hdr = { 2563 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2564 }; 2565 2566 encode_compound_hdr(xdr, req, &hdr); 2567 encode_sequence(xdr, &args->seq_args, &hdr); 2568 encode_putfh(xdr, args->fh, &hdr); 2569 encode_read(xdr, args, &hdr); 2570 2571 rpc_prepare_reply_pages(req, args->pages, args->pgbase, 2572 args->count, hdr.replen - pagepad_maxsz); 2573 req->rq_rcv_buf.flags |= XDRBUF_READ; 2574 encode_nops(&hdr); 2575 } 2576 2577 /* 2578 * Encode an SETATTR request 2579 */ 2580 static void nfs4_xdr_enc_setattr(struct rpc_rqst *req, struct xdr_stream *xdr, 2581 const void *data) 2582 { 2583 const struct nfs_setattrargs *args = data; 2584 struct compound_hdr hdr = { 2585 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2586 }; 2587 2588 encode_compound_hdr(xdr, req, &hdr); 2589 encode_sequence(xdr, &args->seq_args, &hdr); 2590 encode_putfh(xdr, args->fh, &hdr); 2591 encode_setattr(xdr, args, args->server, &hdr); 2592 encode_getfattr(xdr, args->bitmask, &hdr); 2593 encode_nops(&hdr); 2594 } 2595 2596 /* 2597 * Encode a GETACL request 2598 */ 2599 static void nfs4_xdr_enc_getacl(struct rpc_rqst *req, struct xdr_stream *xdr, 2600 const void *data) 2601 { 2602 const struct nfs_getaclargs *args = data; 2603 struct compound_hdr hdr = { 2604 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2605 }; 2606 __u32 nfs4_acl_bitmap[2]; 2607 uint32_t replen; 2608 2609 nfs4_acltype_to_bitmap(args->acl_type, nfs4_acl_bitmap); 2610 2611 encode_compound_hdr(xdr, req, &hdr); 2612 encode_sequence(xdr, &args->seq_args, &hdr); 2613 encode_putfh(xdr, args->fh, &hdr); 2614 replen = hdr.replen + op_decode_hdr_maxsz; 2615 encode_getattr(xdr, nfs4_acl_bitmap, NULL, 2616 ARRAY_SIZE(nfs4_acl_bitmap), &hdr); 2617 2618 rpc_prepare_reply_pages(req, args->acl_pages, 0, 2619 args->acl_len, replen); 2620 encode_nops(&hdr); 2621 } 2622 2623 /* 2624 * Encode a WRITE request 2625 */ 2626 static void nfs4_xdr_enc_write(struct rpc_rqst *req, struct xdr_stream *xdr, 2627 const void *data) 2628 { 2629 const struct nfs_pgio_args *args = data; 2630 struct compound_hdr hdr = { 2631 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2632 }; 2633 2634 encode_compound_hdr(xdr, req, &hdr); 2635 encode_sequence(xdr, &args->seq_args, &hdr); 2636 encode_putfh(xdr, args->fh, &hdr); 2637 encode_write(xdr, args, &hdr); 2638 req->rq_snd_buf.flags |= XDRBUF_WRITE; 2639 if (args->bitmask) 2640 encode_getfattr(xdr, args->bitmask, &hdr); 2641 encode_nops(&hdr); 2642 } 2643 2644 /* 2645 * a COMMIT request 2646 */ 2647 static void nfs4_xdr_enc_commit(struct rpc_rqst *req, struct xdr_stream *xdr, 2648 const void *data) 2649 { 2650 const struct nfs_commitargs *args = data; 2651 struct compound_hdr hdr = { 2652 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2653 }; 2654 2655 encode_compound_hdr(xdr, req, &hdr); 2656 encode_sequence(xdr, &args->seq_args, &hdr); 2657 encode_putfh(xdr, args->fh, &hdr); 2658 encode_commit(xdr, args, &hdr); 2659 encode_nops(&hdr); 2660 } 2661 2662 /* 2663 * FSINFO request 2664 */ 2665 static void nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr, 2666 const void *data) 2667 { 2668 const struct nfs4_fsinfo_arg *args = data; 2669 struct compound_hdr hdr = { 2670 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2671 }; 2672 2673 encode_compound_hdr(xdr, req, &hdr); 2674 encode_sequence(xdr, &args->seq_args, &hdr); 2675 encode_putfh(xdr, args->fh, &hdr); 2676 encode_fsinfo(xdr, args->bitmask, &hdr); 2677 encode_nops(&hdr); 2678 } 2679 2680 /* 2681 * a PATHCONF request 2682 */ 2683 static void nfs4_xdr_enc_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr, 2684 const void *data) 2685 { 2686 const struct nfs4_pathconf_arg *args = data; 2687 struct compound_hdr hdr = { 2688 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2689 }; 2690 2691 encode_compound_hdr(xdr, req, &hdr); 2692 encode_sequence(xdr, &args->seq_args, &hdr); 2693 encode_putfh(xdr, args->fh, &hdr); 2694 encode_getattr(xdr, nfs4_pathconf_bitmap, args->bitmask, 2695 ARRAY_SIZE(nfs4_pathconf_bitmap), &hdr); 2696 encode_nops(&hdr); 2697 } 2698 2699 /* 2700 * a STATFS request 2701 */ 2702 static void nfs4_xdr_enc_statfs(struct rpc_rqst *req, struct xdr_stream *xdr, 2703 const void *data) 2704 { 2705 const struct nfs4_statfs_arg *args = data; 2706 struct compound_hdr hdr = { 2707 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2708 }; 2709 2710 encode_compound_hdr(xdr, req, &hdr); 2711 encode_sequence(xdr, &args->seq_args, &hdr); 2712 encode_putfh(xdr, args->fh, &hdr); 2713 encode_getattr(xdr, nfs4_statfs_bitmap, args->bitmask, 2714 ARRAY_SIZE(nfs4_statfs_bitmap), &hdr); 2715 encode_nops(&hdr); 2716 } 2717 2718 /* 2719 * GETATTR_BITMAP request 2720 */ 2721 static void nfs4_xdr_enc_server_caps(struct rpc_rqst *req, 2722 struct xdr_stream *xdr, 2723 const void *data) 2724 { 2725 const struct nfs4_server_caps_arg *args = data; 2726 const u32 *bitmask = args->bitmask; 2727 struct compound_hdr hdr = { 2728 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2729 }; 2730 2731 encode_compound_hdr(xdr, req, &hdr); 2732 encode_sequence(xdr, &args->seq_args, &hdr); 2733 encode_putfh(xdr, args->fhandle, &hdr); 2734 encode_getattr(xdr, bitmask, NULL, 3, &hdr); 2735 encode_nops(&hdr); 2736 } 2737 2738 /* 2739 * a RENEW request 2740 */ 2741 static void nfs4_xdr_enc_renew(struct rpc_rqst *req, struct xdr_stream *xdr, 2742 const void *data) 2743 2744 { 2745 const struct nfs_client *clp = data; 2746 struct compound_hdr hdr = { 2747 .nops = 0, 2748 }; 2749 2750 encode_compound_hdr(xdr, req, &hdr); 2751 encode_renew(xdr, clp->cl_clientid, &hdr); 2752 encode_nops(&hdr); 2753 } 2754 2755 /* 2756 * a SETCLIENTID request 2757 */ 2758 static void nfs4_xdr_enc_setclientid(struct rpc_rqst *req, 2759 struct xdr_stream *xdr, 2760 const void *data) 2761 { 2762 const struct nfs4_setclientid *sc = data; 2763 struct compound_hdr hdr = { 2764 .nops = 0, 2765 }; 2766 2767 encode_compound_hdr(xdr, req, &hdr); 2768 encode_setclientid(xdr, sc, &hdr); 2769 encode_nops(&hdr); 2770 } 2771 2772 /* 2773 * a SETCLIENTID_CONFIRM request 2774 */ 2775 static void nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req, 2776 struct xdr_stream *xdr, 2777 const void *data) 2778 { 2779 const struct nfs4_setclientid_res *arg = data; 2780 struct compound_hdr hdr = { 2781 .nops = 0, 2782 }; 2783 2784 encode_compound_hdr(xdr, req, &hdr); 2785 encode_setclientid_confirm(xdr, arg, &hdr); 2786 encode_nops(&hdr); 2787 } 2788 2789 /* 2790 * DELEGRETURN request 2791 */ 2792 static void nfs4_xdr_enc_delegreturn(struct rpc_rqst *req, 2793 struct xdr_stream *xdr, 2794 const void *data) 2795 { 2796 const struct nfs4_delegreturnargs *args = data; 2797 struct compound_hdr hdr = { 2798 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2799 }; 2800 2801 encode_compound_hdr(xdr, req, &hdr); 2802 encode_sequence(xdr, &args->seq_args, &hdr); 2803 encode_putfh(xdr, args->fhandle, &hdr); 2804 if (args->lr_args) 2805 encode_layoutreturn(xdr, args->lr_args, &hdr); 2806 if (args->bitmask) 2807 encode_getfattr(xdr, args->bitmask, &hdr); 2808 encode_delegreturn(xdr, args->stateid, &hdr); 2809 encode_nops(&hdr); 2810 } 2811 2812 /* 2813 * Encode FS_LOCATIONS request 2814 */ 2815 static void nfs4_xdr_enc_fs_locations(struct rpc_rqst *req, 2816 struct xdr_stream *xdr, 2817 const void *data) 2818 { 2819 const struct nfs4_fs_locations_arg *args = data; 2820 struct compound_hdr hdr = { 2821 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2822 }; 2823 uint32_t replen; 2824 2825 encode_compound_hdr(xdr, req, &hdr); 2826 encode_sequence(xdr, &args->seq_args, &hdr); 2827 if (args->migration) { 2828 encode_putfh(xdr, args->fh, &hdr); 2829 replen = hdr.replen; 2830 encode_fs_locations(xdr, args->bitmask, &hdr); 2831 if (args->renew) 2832 encode_renew(xdr, args->clientid, &hdr); 2833 } else { 2834 encode_putfh(xdr, args->dir_fh, &hdr); 2835 encode_lookup(xdr, args->name, &hdr); 2836 replen = hdr.replen; 2837 encode_fs_locations(xdr, args->bitmask, &hdr); 2838 } 2839 2840 rpc_prepare_reply_pages(req, (struct page **)&args->page, 0, 2841 PAGE_SIZE, replen); 2842 encode_nops(&hdr); 2843 } 2844 2845 /* 2846 * Encode SECINFO request 2847 */ 2848 static void nfs4_xdr_enc_secinfo(struct rpc_rqst *req, 2849 struct xdr_stream *xdr, 2850 const void *data) 2851 { 2852 const struct nfs4_secinfo_arg *args = data; 2853 struct compound_hdr hdr = { 2854 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2855 }; 2856 2857 encode_compound_hdr(xdr, req, &hdr); 2858 encode_sequence(xdr, &args->seq_args, &hdr); 2859 encode_putfh(xdr, args->dir_fh, &hdr); 2860 encode_secinfo(xdr, args->name, &hdr); 2861 encode_nops(&hdr); 2862 } 2863 2864 /* 2865 * Encode FSID_PRESENT request 2866 */ 2867 static void nfs4_xdr_enc_fsid_present(struct rpc_rqst *req, 2868 struct xdr_stream *xdr, 2869 const void *data) 2870 { 2871 const struct nfs4_fsid_present_arg *args = data; 2872 struct compound_hdr hdr = { 2873 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2874 }; 2875 2876 encode_compound_hdr(xdr, req, &hdr); 2877 encode_sequence(xdr, &args->seq_args, &hdr); 2878 encode_putfh(xdr, args->fh, &hdr); 2879 encode_getfh(xdr, &hdr); 2880 if (args->renew) 2881 encode_renew(xdr, args->clientid, &hdr); 2882 encode_nops(&hdr); 2883 } 2884 2885 #if defined(CONFIG_NFS_V4_1) 2886 /* 2887 * BIND_CONN_TO_SESSION request 2888 */ 2889 static void nfs4_xdr_enc_bind_conn_to_session(struct rpc_rqst *req, 2890 struct xdr_stream *xdr, 2891 const void *data) 2892 { 2893 const struct nfs41_bind_conn_to_session_args *args = data; 2894 struct compound_hdr hdr = { 2895 .minorversion = args->client->cl_mvops->minor_version, 2896 }; 2897 2898 encode_compound_hdr(xdr, req, &hdr); 2899 encode_bind_conn_to_session(xdr, args, &hdr); 2900 encode_nops(&hdr); 2901 } 2902 2903 /* 2904 * EXCHANGE_ID request 2905 */ 2906 static void nfs4_xdr_enc_exchange_id(struct rpc_rqst *req, 2907 struct xdr_stream *xdr, 2908 const void *data) 2909 { 2910 const struct nfs41_exchange_id_args *args = data; 2911 struct compound_hdr hdr = { 2912 .minorversion = args->client->cl_mvops->minor_version, 2913 }; 2914 2915 encode_compound_hdr(xdr, req, &hdr); 2916 encode_exchange_id(xdr, args, &hdr); 2917 encode_nops(&hdr); 2918 } 2919 2920 /* 2921 * a CREATE_SESSION request 2922 */ 2923 static void nfs4_xdr_enc_create_session(struct rpc_rqst *req, 2924 struct xdr_stream *xdr, 2925 const void *data) 2926 { 2927 const struct nfs41_create_session_args *args = data; 2928 struct compound_hdr hdr = { 2929 .minorversion = args->client->cl_mvops->minor_version, 2930 }; 2931 2932 encode_compound_hdr(xdr, req, &hdr); 2933 encode_create_session(xdr, args, &hdr); 2934 encode_nops(&hdr); 2935 } 2936 2937 /* 2938 * a DESTROY_SESSION request 2939 */ 2940 static void nfs4_xdr_enc_destroy_session(struct rpc_rqst *req, 2941 struct xdr_stream *xdr, 2942 const void *data) 2943 { 2944 const struct nfs4_session *session = data; 2945 struct compound_hdr hdr = { 2946 .minorversion = session->clp->cl_mvops->minor_version, 2947 }; 2948 2949 encode_compound_hdr(xdr, req, &hdr); 2950 encode_destroy_session(xdr, session, &hdr); 2951 encode_nops(&hdr); 2952 } 2953 2954 /* 2955 * a DESTROY_CLIENTID request 2956 */ 2957 static void nfs4_xdr_enc_destroy_clientid(struct rpc_rqst *req, 2958 struct xdr_stream *xdr, 2959 const void *data) 2960 { 2961 const struct nfs_client *clp = data; 2962 struct compound_hdr hdr = { 2963 .minorversion = clp->cl_mvops->minor_version, 2964 }; 2965 2966 encode_compound_hdr(xdr, req, &hdr); 2967 encode_destroy_clientid(xdr, clp->cl_clientid, &hdr); 2968 encode_nops(&hdr); 2969 } 2970 2971 /* 2972 * a SEQUENCE request 2973 */ 2974 static void nfs4_xdr_enc_sequence(struct rpc_rqst *req, struct xdr_stream *xdr, 2975 const void *data) 2976 { 2977 const struct nfs4_sequence_args *args = data; 2978 struct compound_hdr hdr = { 2979 .minorversion = nfs4_xdr_minorversion(args), 2980 }; 2981 2982 encode_compound_hdr(xdr, req, &hdr); 2983 encode_sequence(xdr, args, &hdr); 2984 encode_nops(&hdr); 2985 } 2986 2987 #endif 2988 2989 /* 2990 * a GET_LEASE_TIME request 2991 */ 2992 static void nfs4_xdr_enc_get_lease_time(struct rpc_rqst *req, 2993 struct xdr_stream *xdr, 2994 const void *data) 2995 { 2996 const struct nfs4_get_lease_time_args *args = data; 2997 struct compound_hdr hdr = { 2998 .minorversion = nfs4_xdr_minorversion(&args->la_seq_args), 2999 }; 3000 const u32 lease_bitmap[3] = { FATTR4_WORD0_LEASE_TIME }; 3001 3002 encode_compound_hdr(xdr, req, &hdr); 3003 encode_sequence(xdr, &args->la_seq_args, &hdr); 3004 encode_putrootfh(xdr, &hdr); 3005 encode_fsinfo(xdr, lease_bitmap, &hdr); 3006 encode_nops(&hdr); 3007 } 3008 3009 #ifdef CONFIG_NFS_V4_1 3010 3011 /* 3012 * a RECLAIM_COMPLETE request 3013 */ 3014 static void nfs4_xdr_enc_reclaim_complete(struct rpc_rqst *req, 3015 struct xdr_stream *xdr, 3016 const void *data) 3017 { 3018 const struct nfs41_reclaim_complete_args *args = data; 3019 struct compound_hdr hdr = { 3020 .minorversion = nfs4_xdr_minorversion(&args->seq_args) 3021 }; 3022 3023 encode_compound_hdr(xdr, req, &hdr); 3024 encode_sequence(xdr, &args->seq_args, &hdr); 3025 encode_reclaim_complete(xdr, args, &hdr); 3026 encode_nops(&hdr); 3027 } 3028 3029 /* 3030 * Encode GETDEVICEINFO request 3031 */ 3032 static void nfs4_xdr_enc_getdeviceinfo(struct rpc_rqst *req, 3033 struct xdr_stream *xdr, 3034 const void *data) 3035 { 3036 const struct nfs4_getdeviceinfo_args *args = data; 3037 struct compound_hdr hdr = { 3038 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 3039 }; 3040 uint32_t replen; 3041 3042 encode_compound_hdr(xdr, req, &hdr); 3043 encode_sequence(xdr, &args->seq_args, &hdr); 3044 3045 replen = hdr.replen + op_decode_hdr_maxsz + 2; 3046 3047 encode_getdeviceinfo(xdr, args, &hdr); 3048 3049 /* set up reply kvec. device_addr4 opaque data is read into the 3050 * pages */ 3051 rpc_prepare_reply_pages(req, args->pdev->pages, args->pdev->pgbase, 3052 args->pdev->pglen, replen); 3053 encode_nops(&hdr); 3054 } 3055 3056 /* 3057 * Encode LAYOUTGET request 3058 */ 3059 static void nfs4_xdr_enc_layoutget(struct rpc_rqst *req, 3060 struct xdr_stream *xdr, 3061 const void *data) 3062 { 3063 const struct nfs4_layoutget_args *args = data; 3064 struct compound_hdr hdr = { 3065 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 3066 }; 3067 3068 encode_compound_hdr(xdr, req, &hdr); 3069 encode_sequence(xdr, &args->seq_args, &hdr); 3070 encode_putfh(xdr, NFS_FH(args->inode), &hdr); 3071 encode_layoutget(xdr, args, &hdr); 3072 3073 rpc_prepare_reply_pages(req, args->layout.pages, 0, 3074 args->layout.pglen, hdr.replen - pagepad_maxsz); 3075 encode_nops(&hdr); 3076 } 3077 3078 /* 3079 * Encode LAYOUTCOMMIT request 3080 */ 3081 static void nfs4_xdr_enc_layoutcommit(struct rpc_rqst *req, 3082 struct xdr_stream *xdr, 3083 const void *priv) 3084 { 3085 const struct nfs4_layoutcommit_args *args = priv; 3086 struct nfs4_layoutcommit_data *data = 3087 container_of(args, struct nfs4_layoutcommit_data, args); 3088 struct compound_hdr hdr = { 3089 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 3090 }; 3091 3092 encode_compound_hdr(xdr, req, &hdr); 3093 encode_sequence(xdr, &args->seq_args, &hdr); 3094 encode_putfh(xdr, NFS_FH(args->inode), &hdr); 3095 encode_layoutcommit(xdr, data->args.inode, args, &hdr); 3096 encode_getfattr(xdr, args->bitmask, &hdr); 3097 encode_nops(&hdr); 3098 } 3099 3100 /* 3101 * Encode LAYOUTRETURN request 3102 */ 3103 static void nfs4_xdr_enc_layoutreturn(struct rpc_rqst *req, 3104 struct xdr_stream *xdr, 3105 const void *data) 3106 { 3107 const struct nfs4_layoutreturn_args *args = data; 3108 struct compound_hdr hdr = { 3109 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 3110 }; 3111 3112 encode_compound_hdr(xdr, req, &hdr); 3113 encode_sequence(xdr, &args->seq_args, &hdr); 3114 encode_putfh(xdr, NFS_FH(args->inode), &hdr); 3115 encode_layoutreturn(xdr, args, &hdr); 3116 encode_nops(&hdr); 3117 } 3118 3119 /* 3120 * Encode SECINFO_NO_NAME request 3121 */ 3122 static void nfs4_xdr_enc_secinfo_no_name(struct rpc_rqst *req, 3123 struct xdr_stream *xdr, 3124 const void *data) 3125 { 3126 const struct nfs41_secinfo_no_name_args *args = data; 3127 struct compound_hdr hdr = { 3128 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 3129 }; 3130 3131 encode_compound_hdr(xdr, req, &hdr); 3132 encode_sequence(xdr, &args->seq_args, &hdr); 3133 encode_putrootfh(xdr, &hdr); 3134 encode_secinfo_no_name(xdr, args, &hdr); 3135 encode_nops(&hdr); 3136 } 3137 3138 /* 3139 * Encode TEST_STATEID request 3140 */ 3141 static void nfs4_xdr_enc_test_stateid(struct rpc_rqst *req, 3142 struct xdr_stream *xdr, 3143 const void *data) 3144 { 3145 const struct nfs41_test_stateid_args *args = data; 3146 struct compound_hdr hdr = { 3147 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 3148 }; 3149 3150 encode_compound_hdr(xdr, req, &hdr); 3151 encode_sequence(xdr, &args->seq_args, &hdr); 3152 encode_test_stateid(xdr, args, &hdr); 3153 encode_nops(&hdr); 3154 } 3155 3156 /* 3157 * Encode FREE_STATEID request 3158 */ 3159 static void nfs4_xdr_enc_free_stateid(struct rpc_rqst *req, 3160 struct xdr_stream *xdr, 3161 const void *data) 3162 { 3163 const struct nfs41_free_stateid_args *args = data; 3164 struct compound_hdr hdr = { 3165 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 3166 }; 3167 3168 encode_compound_hdr(xdr, req, &hdr); 3169 encode_sequence(xdr, &args->seq_args, &hdr); 3170 encode_free_stateid(xdr, args, &hdr); 3171 encode_nops(&hdr); 3172 } 3173 #endif /* CONFIG_NFS_V4_1 */ 3174 3175 static int decode_opaque_inline(struct xdr_stream *xdr, unsigned int *len, char **string) 3176 { 3177 ssize_t ret = xdr_stream_decode_opaque_inline(xdr, (void **)string, 3178 NFS4_OPAQUE_LIMIT); 3179 if (unlikely(ret < 0)) 3180 return -EIO; 3181 *len = ret; 3182 return 0; 3183 } 3184 3185 static int decode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr) 3186 { 3187 ssize_t ret; 3188 void *ptr; 3189 u32 tmp; 3190 3191 if (xdr_stream_decode_u32(xdr, &tmp) < 0) 3192 return -EIO; 3193 hdr->status = tmp; 3194 3195 ret = xdr_stream_decode_opaque_inline(xdr, &ptr, NFS4_OPAQUE_LIMIT); 3196 if (ret < 0) 3197 return -EIO; 3198 hdr->taglen = ret; 3199 hdr->tag = ptr; 3200 3201 if (xdr_stream_decode_u32(xdr, &tmp) < 0) 3202 return -EIO; 3203 hdr->nops = tmp; 3204 if (unlikely(hdr->nops < 1)) 3205 return nfs4_stat_to_errno(hdr->status); 3206 return 0; 3207 } 3208 3209 static bool __decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected, 3210 int *nfs_retval) 3211 { 3212 __be32 *p; 3213 uint32_t opnum; 3214 int32_t nfserr; 3215 3216 p = xdr_inline_decode(xdr, 8); 3217 if (unlikely(!p)) 3218 goto out_overflow; 3219 opnum = be32_to_cpup(p++); 3220 if (unlikely(opnum != expected)) 3221 goto out_bad_operation; 3222 if (unlikely(*p != cpu_to_be32(NFS_OK))) 3223 goto out_status; 3224 *nfs_retval = 0; 3225 return true; 3226 out_status: 3227 nfserr = be32_to_cpup(p); 3228 trace_nfs4_xdr_status(xdr, opnum, nfserr); 3229 *nfs_retval = nfs4_stat_to_errno(nfserr); 3230 return true; 3231 out_bad_operation: 3232 trace_nfs4_xdr_bad_operation(xdr, opnum, expected); 3233 *nfs_retval = -EREMOTEIO; 3234 return false; 3235 out_overflow: 3236 *nfs_retval = -EIO; 3237 return false; 3238 } 3239 3240 static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected) 3241 { 3242 int retval; 3243 3244 __decode_op_hdr(xdr, expected, &retval); 3245 return retval; 3246 } 3247 3248 /* Dummy routine */ 3249 static int decode_ace(struct xdr_stream *xdr, void *ace) 3250 { 3251 __be32 *p; 3252 unsigned int strlen; 3253 char *str; 3254 3255 p = xdr_inline_decode(xdr, 12); 3256 if (unlikely(!p)) 3257 return -EIO; 3258 return decode_opaque_inline(xdr, &strlen, &str); 3259 } 3260 3261 static ssize_t 3262 decode_bitmap4(struct xdr_stream *xdr, uint32_t *bitmap, size_t sz) 3263 { 3264 ssize_t ret; 3265 3266 ret = xdr_stream_decode_uint32_array(xdr, bitmap, sz); 3267 if (likely(ret >= 0)) 3268 return ret; 3269 if (ret != -EMSGSIZE) 3270 return -EIO; 3271 return sz; 3272 } 3273 3274 static int decode_attr_bitmap(struct xdr_stream *xdr, uint32_t *bitmap) 3275 { 3276 ssize_t ret; 3277 ret = decode_bitmap4(xdr, bitmap, 3); 3278 return ret < 0 ? ret : 0; 3279 } 3280 3281 static int decode_attr_length(struct xdr_stream *xdr, uint32_t *attrlen, unsigned int *savep) 3282 { 3283 __be32 *p; 3284 3285 p = xdr_inline_decode(xdr, 4); 3286 if (unlikely(!p)) 3287 return -EIO; 3288 *attrlen = be32_to_cpup(p); 3289 *savep = xdr_stream_pos(xdr); 3290 return 0; 3291 } 3292 3293 static int decode_attr_supported(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *bitmask) 3294 { 3295 if (likely(bitmap[0] & FATTR4_WORD0_SUPPORTED_ATTRS)) { 3296 int ret; 3297 ret = decode_attr_bitmap(xdr, bitmask); 3298 if (unlikely(ret < 0)) 3299 return ret; 3300 bitmap[0] &= ~FATTR4_WORD0_SUPPORTED_ATTRS; 3301 } else 3302 bitmask[0] = bitmask[1] = bitmask[2] = 0; 3303 dprintk("%s: bitmask=%08x:%08x:%08x\n", __func__, 3304 bitmask[0], bitmask[1], bitmask[2]); 3305 return 0; 3306 } 3307 3308 static int decode_attr_type(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *type) 3309 { 3310 __be32 *p; 3311 int ret = 0; 3312 3313 *type = 0; 3314 if (unlikely(bitmap[0] & (FATTR4_WORD0_TYPE - 1U))) 3315 return -EIO; 3316 if (likely(bitmap[0] & FATTR4_WORD0_TYPE)) { 3317 p = xdr_inline_decode(xdr, 4); 3318 if (unlikely(!p)) 3319 return -EIO; 3320 *type = be32_to_cpup(p); 3321 if (*type < NF4REG || *type > NF4NAMEDATTR) { 3322 dprintk("%s: bad type %d\n", __func__, *type); 3323 return -EIO; 3324 } 3325 bitmap[0] &= ~FATTR4_WORD0_TYPE; 3326 ret = NFS_ATTR_FATTR_TYPE; 3327 } 3328 dprintk("%s: type=0%o\n", __func__, nfs_type2fmt[*type]); 3329 return ret; 3330 } 3331 3332 static int decode_attr_fh_expire_type(struct xdr_stream *xdr, 3333 uint32_t *bitmap, uint32_t *type) 3334 { 3335 __be32 *p; 3336 3337 *type = 0; 3338 if (unlikely(bitmap[0] & (FATTR4_WORD0_FH_EXPIRE_TYPE - 1U))) 3339 return -EIO; 3340 if (likely(bitmap[0] & FATTR4_WORD0_FH_EXPIRE_TYPE)) { 3341 p = xdr_inline_decode(xdr, 4); 3342 if (unlikely(!p)) 3343 return -EIO; 3344 *type = be32_to_cpup(p); 3345 bitmap[0] &= ~FATTR4_WORD0_FH_EXPIRE_TYPE; 3346 } 3347 dprintk("%s: expire type=0x%x\n", __func__, *type); 3348 return 0; 3349 } 3350 3351 static int decode_attr_change(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *change) 3352 { 3353 __be32 *p; 3354 int ret = 0; 3355 3356 *change = 0; 3357 if (unlikely(bitmap[0] & (FATTR4_WORD0_CHANGE - 1U))) 3358 return -EIO; 3359 if (likely(bitmap[0] & FATTR4_WORD0_CHANGE)) { 3360 p = xdr_inline_decode(xdr, 8); 3361 if (unlikely(!p)) 3362 return -EIO; 3363 xdr_decode_hyper(p, change); 3364 bitmap[0] &= ~FATTR4_WORD0_CHANGE; 3365 ret = NFS_ATTR_FATTR_CHANGE; 3366 } 3367 dprintk("%s: change attribute=%Lu\n", __func__, 3368 (unsigned long long)*change); 3369 return ret; 3370 } 3371 3372 static int decode_attr_size(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *size) 3373 { 3374 __be32 *p; 3375 int ret = 0; 3376 3377 *size = 0; 3378 if (unlikely(bitmap[0] & (FATTR4_WORD0_SIZE - 1U))) 3379 return -EIO; 3380 if (likely(bitmap[0] & FATTR4_WORD0_SIZE)) { 3381 p = xdr_inline_decode(xdr, 8); 3382 if (unlikely(!p)) 3383 return -EIO; 3384 xdr_decode_hyper(p, size); 3385 bitmap[0] &= ~FATTR4_WORD0_SIZE; 3386 ret = NFS_ATTR_FATTR_SIZE; 3387 } 3388 dprintk("%s: file size=%Lu\n", __func__, (unsigned long long)*size); 3389 return ret; 3390 } 3391 3392 static int decode_attr_link_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) 3393 { 3394 __be32 *p; 3395 3396 *res = 0; 3397 if (unlikely(bitmap[0] & (FATTR4_WORD0_LINK_SUPPORT - 1U))) 3398 return -EIO; 3399 if (likely(bitmap[0] & FATTR4_WORD0_LINK_SUPPORT)) { 3400 p = xdr_inline_decode(xdr, 4); 3401 if (unlikely(!p)) 3402 return -EIO; 3403 *res = be32_to_cpup(p); 3404 bitmap[0] &= ~FATTR4_WORD0_LINK_SUPPORT; 3405 } 3406 dprintk("%s: link support=%s\n", __func__, *res == 0 ? "false" : "true"); 3407 return 0; 3408 } 3409 3410 static int decode_attr_symlink_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) 3411 { 3412 __be32 *p; 3413 3414 *res = 0; 3415 if (unlikely(bitmap[0] & (FATTR4_WORD0_SYMLINK_SUPPORT - 1U))) 3416 return -EIO; 3417 if (likely(bitmap[0] & FATTR4_WORD0_SYMLINK_SUPPORT)) { 3418 p = xdr_inline_decode(xdr, 4); 3419 if (unlikely(!p)) 3420 return -EIO; 3421 *res = be32_to_cpup(p); 3422 bitmap[0] &= ~FATTR4_WORD0_SYMLINK_SUPPORT; 3423 } 3424 dprintk("%s: symlink support=%s\n", __func__, *res == 0 ? "false" : "true"); 3425 return 0; 3426 } 3427 3428 static int decode_attr_fsid(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fsid *fsid) 3429 { 3430 __be32 *p; 3431 int ret = 0; 3432 3433 fsid->major = 0; 3434 fsid->minor = 0; 3435 if (unlikely(bitmap[0] & (FATTR4_WORD0_FSID - 1U))) 3436 return -EIO; 3437 if (likely(bitmap[0] & FATTR4_WORD0_FSID)) { 3438 p = xdr_inline_decode(xdr, 16); 3439 if (unlikely(!p)) 3440 return -EIO; 3441 p = xdr_decode_hyper(p, &fsid->major); 3442 xdr_decode_hyper(p, &fsid->minor); 3443 bitmap[0] &= ~FATTR4_WORD0_FSID; 3444 ret = NFS_ATTR_FATTR_FSID; 3445 } 3446 dprintk("%s: fsid=(0x%Lx/0x%Lx)\n", __func__, 3447 (unsigned long long)fsid->major, 3448 (unsigned long long)fsid->minor); 3449 return ret; 3450 } 3451 3452 static int decode_attr_lease_time(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) 3453 { 3454 __be32 *p; 3455 3456 *res = 60; 3457 if (unlikely(bitmap[0] & (FATTR4_WORD0_LEASE_TIME - 1U))) 3458 return -EIO; 3459 if (likely(bitmap[0] & FATTR4_WORD0_LEASE_TIME)) { 3460 p = xdr_inline_decode(xdr, 4); 3461 if (unlikely(!p)) 3462 return -EIO; 3463 *res = be32_to_cpup(p); 3464 bitmap[0] &= ~FATTR4_WORD0_LEASE_TIME; 3465 } 3466 dprintk("%s: lease time=%u\n", __func__, (unsigned int)*res); 3467 return 0; 3468 } 3469 3470 static int decode_attr_error(struct xdr_stream *xdr, uint32_t *bitmap, int32_t *res) 3471 { 3472 __be32 *p; 3473 3474 if (unlikely(bitmap[0] & (FATTR4_WORD0_RDATTR_ERROR - 1U))) 3475 return -EIO; 3476 if (likely(bitmap[0] & FATTR4_WORD0_RDATTR_ERROR)) { 3477 p = xdr_inline_decode(xdr, 4); 3478 if (unlikely(!p)) 3479 return -EIO; 3480 bitmap[0] &= ~FATTR4_WORD0_RDATTR_ERROR; 3481 *res = -be32_to_cpup(p); 3482 } 3483 return 0; 3484 } 3485 3486 static int decode_attr_exclcreat_supported(struct xdr_stream *xdr, 3487 uint32_t *bitmap, uint32_t *bitmask) 3488 { 3489 if (likely(bitmap[2] & FATTR4_WORD2_SUPPATTR_EXCLCREAT)) { 3490 int ret; 3491 ret = decode_attr_bitmap(xdr, bitmask); 3492 if (unlikely(ret < 0)) 3493 return ret; 3494 bitmap[2] &= ~FATTR4_WORD2_SUPPATTR_EXCLCREAT; 3495 } else 3496 bitmask[0] = bitmask[1] = bitmask[2] = 0; 3497 dprintk("%s: bitmask=%08x:%08x:%08x\n", __func__, 3498 bitmask[0], bitmask[1], bitmask[2]); 3499 return 0; 3500 } 3501 3502 static int decode_attr_filehandle(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fh *fh) 3503 { 3504 __be32 *p; 3505 u32 len; 3506 3507 if (fh != NULL) 3508 memset(fh, 0, sizeof(*fh)); 3509 3510 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEHANDLE - 1U))) 3511 return -EIO; 3512 if (likely(bitmap[0] & FATTR4_WORD0_FILEHANDLE)) { 3513 p = xdr_inline_decode(xdr, 4); 3514 if (unlikely(!p)) 3515 return -EIO; 3516 len = be32_to_cpup(p); 3517 if (len > NFS4_FHSIZE || len == 0) { 3518 trace_nfs4_xdr_bad_filehandle(xdr, OP_READDIR, 3519 NFS4ERR_BADHANDLE); 3520 return -EREMOTEIO; 3521 } 3522 p = xdr_inline_decode(xdr, len); 3523 if (unlikely(!p)) 3524 return -EIO; 3525 if (fh != NULL) { 3526 memcpy(fh->data, p, len); 3527 fh->size = len; 3528 } 3529 bitmap[0] &= ~FATTR4_WORD0_FILEHANDLE; 3530 } 3531 return 0; 3532 } 3533 3534 static int decode_attr_aclsupport(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) 3535 { 3536 __be32 *p; 3537 3538 *res = 0; 3539 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACLSUPPORT - 1U))) 3540 return -EIO; 3541 if (likely(bitmap[0] & FATTR4_WORD0_ACLSUPPORT)) { 3542 p = xdr_inline_decode(xdr, 4); 3543 if (unlikely(!p)) 3544 return -EIO; 3545 *res = be32_to_cpup(p); 3546 bitmap[0] &= ~FATTR4_WORD0_ACLSUPPORT; 3547 } 3548 dprintk("%s: ACLs supported=%u\n", __func__, (unsigned int)*res); 3549 return 0; 3550 } 3551 3552 static int decode_attr_case_insensitive(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) 3553 { 3554 __be32 *p; 3555 3556 *res = 0; 3557 if (unlikely(bitmap[0] & (FATTR4_WORD0_CASE_INSENSITIVE - 1U))) 3558 return -EIO; 3559 if (likely(bitmap[0] & FATTR4_WORD0_CASE_INSENSITIVE)) { 3560 p = xdr_inline_decode(xdr, 4); 3561 if (unlikely(!p)) 3562 return -EIO; 3563 *res = be32_to_cpup(p); 3564 bitmap[0] &= ~FATTR4_WORD0_CASE_INSENSITIVE; 3565 } 3566 dprintk("%s: case_insensitive=%s\n", __func__, *res == 0 ? "false" : "true"); 3567 return 0; 3568 } 3569 3570 static int decode_attr_case_preserving(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) 3571 { 3572 __be32 *p; 3573 3574 *res = 0; 3575 if (unlikely(bitmap[0] & (FATTR4_WORD0_CASE_PRESERVING - 1U))) 3576 return -EIO; 3577 if (likely(bitmap[0] & FATTR4_WORD0_CASE_PRESERVING)) { 3578 p = xdr_inline_decode(xdr, 4); 3579 if (unlikely(!p)) 3580 return -EIO; 3581 *res = be32_to_cpup(p); 3582 bitmap[0] &= ~FATTR4_WORD0_CASE_PRESERVING; 3583 } 3584 dprintk("%s: case_preserving=%s\n", __func__, *res == 0 ? "false" : "true"); 3585 return 0; 3586 } 3587 3588 static int decode_attr_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid) 3589 { 3590 __be32 *p; 3591 int ret = 0; 3592 3593 *fileid = 0; 3594 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEID - 1U))) 3595 return -EIO; 3596 if (likely(bitmap[0] & FATTR4_WORD0_FILEID)) { 3597 p = xdr_inline_decode(xdr, 8); 3598 if (unlikely(!p)) 3599 return -EIO; 3600 xdr_decode_hyper(p, fileid); 3601 bitmap[0] &= ~FATTR4_WORD0_FILEID; 3602 ret = NFS_ATTR_FATTR_FILEID; 3603 } 3604 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid); 3605 return ret; 3606 } 3607 3608 static int decode_attr_mounted_on_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid) 3609 { 3610 __be32 *p; 3611 int ret = 0; 3612 3613 *fileid = 0; 3614 if (unlikely(bitmap[1] & (FATTR4_WORD1_MOUNTED_ON_FILEID - 1U))) 3615 return -EIO; 3616 if (likely(bitmap[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)) { 3617 p = xdr_inline_decode(xdr, 8); 3618 if (unlikely(!p)) 3619 return -EIO; 3620 xdr_decode_hyper(p, fileid); 3621 bitmap[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID; 3622 ret = NFS_ATTR_FATTR_MOUNTED_ON_FILEID; 3623 } 3624 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid); 3625 return ret; 3626 } 3627 3628 static int decode_attr_files_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 3629 { 3630 __be32 *p; 3631 int status = 0; 3632 3633 *res = 0; 3634 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_AVAIL - 1U))) 3635 return -EIO; 3636 if (likely(bitmap[0] & FATTR4_WORD0_FILES_AVAIL)) { 3637 p = xdr_inline_decode(xdr, 8); 3638 if (unlikely(!p)) 3639 return -EIO; 3640 xdr_decode_hyper(p, res); 3641 bitmap[0] &= ~FATTR4_WORD0_FILES_AVAIL; 3642 } 3643 dprintk("%s: files avail=%Lu\n", __func__, (unsigned long long)*res); 3644 return status; 3645 } 3646 3647 static int decode_attr_files_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 3648 { 3649 __be32 *p; 3650 int status = 0; 3651 3652 *res = 0; 3653 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_FREE - 1U))) 3654 return -EIO; 3655 if (likely(bitmap[0] & FATTR4_WORD0_FILES_FREE)) { 3656 p = xdr_inline_decode(xdr, 8); 3657 if (unlikely(!p)) 3658 return -EIO; 3659 xdr_decode_hyper(p, res); 3660 bitmap[0] &= ~FATTR4_WORD0_FILES_FREE; 3661 } 3662 dprintk("%s: files free=%Lu\n", __func__, (unsigned long long)*res); 3663 return status; 3664 } 3665 3666 static int decode_attr_files_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 3667 { 3668 __be32 *p; 3669 int status = 0; 3670 3671 *res = 0; 3672 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_TOTAL - 1U))) 3673 return -EIO; 3674 if (likely(bitmap[0] & FATTR4_WORD0_FILES_TOTAL)) { 3675 p = xdr_inline_decode(xdr, 8); 3676 if (unlikely(!p)) 3677 return -EIO; 3678 xdr_decode_hyper(p, res); 3679 bitmap[0] &= ~FATTR4_WORD0_FILES_TOTAL; 3680 } 3681 dprintk("%s: files total=%Lu\n", __func__, (unsigned long long)*res); 3682 return status; 3683 } 3684 3685 static int decode_pathname(struct xdr_stream *xdr, struct nfs4_pathname *path) 3686 { 3687 u32 n; 3688 __be32 *p; 3689 int status = 0; 3690 3691 p = xdr_inline_decode(xdr, 4); 3692 if (unlikely(!p)) 3693 return -EIO; 3694 n = be32_to_cpup(p); 3695 if (n == 0) 3696 goto root_path; 3697 dprintk("pathname4: "); 3698 if (n > NFS4_PATHNAME_MAXCOMPONENTS) { 3699 dprintk("cannot parse %d components in path\n", n); 3700 goto out_eio; 3701 } 3702 for (path->ncomponents = 0; path->ncomponents < n; path->ncomponents++) { 3703 struct nfs4_string *component = &path->components[path->ncomponents]; 3704 status = decode_opaque_inline(xdr, &component->len, &component->data); 3705 if (unlikely(status != 0)) 3706 goto out_eio; 3707 ifdebug (XDR) 3708 pr_cont("%s%.*s ", 3709 (path->ncomponents != n ? "/ " : ""), 3710 component->len, component->data); 3711 } 3712 out: 3713 return status; 3714 root_path: 3715 /* a root pathname is sent as a zero component4 */ 3716 path->ncomponents = 1; 3717 path->components[0].len=0; 3718 path->components[0].data=NULL; 3719 dprintk("pathname4: /\n"); 3720 goto out; 3721 out_eio: 3722 dprintk(" status %d", status); 3723 status = -EIO; 3724 goto out; 3725 } 3726 3727 static int decode_attr_fs_locations(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_fs_locations *res) 3728 { 3729 int n; 3730 __be32 *p; 3731 int status = -EIO; 3732 3733 if (unlikely(bitmap[0] & (FATTR4_WORD0_FS_LOCATIONS -1U))) 3734 goto out; 3735 status = 0; 3736 if (unlikely(!(bitmap[0] & FATTR4_WORD0_FS_LOCATIONS))) 3737 goto out; 3738 bitmap[0] &= ~FATTR4_WORD0_FS_LOCATIONS; 3739 status = -EIO; 3740 /* Ignore borken servers that return unrequested attrs */ 3741 if (unlikely(res == NULL)) 3742 goto out; 3743 dprintk("%s: fsroot:\n", __func__); 3744 status = decode_pathname(xdr, &res->fs_path); 3745 if (unlikely(status != 0)) 3746 goto out; 3747 p = xdr_inline_decode(xdr, 4); 3748 if (unlikely(!p)) 3749 goto out_eio; 3750 n = be32_to_cpup(p); 3751 for (res->nlocations = 0; res->nlocations < n; res->nlocations++) { 3752 u32 m; 3753 struct nfs4_fs_location *loc; 3754 3755 if (res->nlocations == NFS4_FS_LOCATIONS_MAXENTRIES) 3756 break; 3757 loc = &res->locations[res->nlocations]; 3758 p = xdr_inline_decode(xdr, 4); 3759 if (unlikely(!p)) 3760 goto out_eio; 3761 m = be32_to_cpup(p); 3762 3763 dprintk("%s: servers:\n", __func__); 3764 for (loc->nservers = 0; loc->nservers < m; loc->nservers++) { 3765 struct nfs4_string *server; 3766 3767 if (loc->nservers == NFS4_FS_LOCATION_MAXSERVERS) { 3768 unsigned int i; 3769 dprintk("%s: using first %u of %u servers " 3770 "returned for location %u\n", 3771 __func__, 3772 NFS4_FS_LOCATION_MAXSERVERS, 3773 m, res->nlocations); 3774 for (i = loc->nservers; i < m; i++) { 3775 unsigned int len; 3776 char *data; 3777 status = decode_opaque_inline(xdr, &len, &data); 3778 if (unlikely(status != 0)) 3779 goto out_eio; 3780 } 3781 break; 3782 } 3783 server = &loc->servers[loc->nservers]; 3784 status = decode_opaque_inline(xdr, &server->len, &server->data); 3785 if (unlikely(status != 0)) 3786 goto out_eio; 3787 dprintk("%s ", server->data); 3788 } 3789 status = decode_pathname(xdr, &loc->rootpath); 3790 if (unlikely(status != 0)) 3791 goto out_eio; 3792 } 3793 if (res->nlocations != 0) 3794 status = NFS_ATTR_FATTR_V4_LOCATIONS; 3795 out: 3796 dprintk("%s: fs_locations done, error = %d\n", __func__, status); 3797 return status; 3798 out_eio: 3799 status = -EIO; 3800 goto out; 3801 } 3802 3803 static int decode_attr_maxfilesize(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 3804 { 3805 __be32 *p; 3806 int status = 0; 3807 3808 *res = 0; 3809 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXFILESIZE - 1U))) 3810 return -EIO; 3811 if (likely(bitmap[0] & FATTR4_WORD0_MAXFILESIZE)) { 3812 p = xdr_inline_decode(xdr, 8); 3813 if (unlikely(!p)) 3814 return -EIO; 3815 xdr_decode_hyper(p, res); 3816 bitmap[0] &= ~FATTR4_WORD0_MAXFILESIZE; 3817 } 3818 dprintk("%s: maxfilesize=%Lu\n", __func__, (unsigned long long)*res); 3819 return status; 3820 } 3821 3822 static int decode_attr_maxlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxlink) 3823 { 3824 __be32 *p; 3825 int status = 0; 3826 3827 *maxlink = 1; 3828 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXLINK - 1U))) 3829 return -EIO; 3830 if (likely(bitmap[0] & FATTR4_WORD0_MAXLINK)) { 3831 p = xdr_inline_decode(xdr, 4); 3832 if (unlikely(!p)) 3833 return -EIO; 3834 *maxlink = be32_to_cpup(p); 3835 bitmap[0] &= ~FATTR4_WORD0_MAXLINK; 3836 } 3837 dprintk("%s: maxlink=%u\n", __func__, *maxlink); 3838 return status; 3839 } 3840 3841 static int decode_attr_maxname(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxname) 3842 { 3843 __be32 *p; 3844 int status = 0; 3845 3846 *maxname = 1024; 3847 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXNAME - 1U))) 3848 return -EIO; 3849 if (likely(bitmap[0] & FATTR4_WORD0_MAXNAME)) { 3850 p = xdr_inline_decode(xdr, 4); 3851 if (unlikely(!p)) 3852 return -EIO; 3853 *maxname = be32_to_cpup(p); 3854 bitmap[0] &= ~FATTR4_WORD0_MAXNAME; 3855 } 3856 dprintk("%s: maxname=%u\n", __func__, *maxname); 3857 return status; 3858 } 3859 3860 static int decode_attr_maxread(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) 3861 { 3862 __be32 *p; 3863 int status = 0; 3864 3865 *res = 1024; 3866 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXREAD - 1U))) 3867 return -EIO; 3868 if (likely(bitmap[0] & FATTR4_WORD0_MAXREAD)) { 3869 uint64_t maxread; 3870 p = xdr_inline_decode(xdr, 8); 3871 if (unlikely(!p)) 3872 return -EIO; 3873 xdr_decode_hyper(p, &maxread); 3874 if (maxread > 0x7FFFFFFF) 3875 maxread = 0x7FFFFFFF; 3876 *res = (uint32_t)maxread; 3877 bitmap[0] &= ~FATTR4_WORD0_MAXREAD; 3878 } 3879 dprintk("%s: maxread=%lu\n", __func__, (unsigned long)*res); 3880 return status; 3881 } 3882 3883 static int decode_attr_maxwrite(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) 3884 { 3885 __be32 *p; 3886 int status = 0; 3887 3888 *res = 1024; 3889 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXWRITE - 1U))) 3890 return -EIO; 3891 if (likely(bitmap[0] & FATTR4_WORD0_MAXWRITE)) { 3892 uint64_t maxwrite; 3893 p = xdr_inline_decode(xdr, 8); 3894 if (unlikely(!p)) 3895 return -EIO; 3896 xdr_decode_hyper(p, &maxwrite); 3897 if (maxwrite > 0x7FFFFFFF) 3898 maxwrite = 0x7FFFFFFF; 3899 *res = (uint32_t)maxwrite; 3900 bitmap[0] &= ~FATTR4_WORD0_MAXWRITE; 3901 } 3902 dprintk("%s: maxwrite=%lu\n", __func__, (unsigned long)*res); 3903 return status; 3904 } 3905 3906 static int decode_attr_mode(struct xdr_stream *xdr, uint32_t *bitmap, umode_t *mode) 3907 { 3908 uint32_t tmp; 3909 __be32 *p; 3910 int ret = 0; 3911 3912 *mode = 0; 3913 if (unlikely(bitmap[1] & (FATTR4_WORD1_MODE - 1U))) 3914 return -EIO; 3915 if (likely(bitmap[1] & FATTR4_WORD1_MODE)) { 3916 p = xdr_inline_decode(xdr, 4); 3917 if (unlikely(!p)) 3918 return -EIO; 3919 tmp = be32_to_cpup(p); 3920 *mode = tmp & ~S_IFMT; 3921 bitmap[1] &= ~FATTR4_WORD1_MODE; 3922 ret = NFS_ATTR_FATTR_MODE; 3923 } 3924 dprintk("%s: file mode=0%o\n", __func__, (unsigned int)*mode); 3925 return ret; 3926 } 3927 3928 static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *nlink) 3929 { 3930 __be32 *p; 3931 int ret = 0; 3932 3933 *nlink = 1; 3934 if (unlikely(bitmap[1] & (FATTR4_WORD1_NUMLINKS - 1U))) 3935 return -EIO; 3936 if (likely(bitmap[1] & FATTR4_WORD1_NUMLINKS)) { 3937 p = xdr_inline_decode(xdr, 4); 3938 if (unlikely(!p)) 3939 return -EIO; 3940 *nlink = be32_to_cpup(p); 3941 bitmap[1] &= ~FATTR4_WORD1_NUMLINKS; 3942 ret = NFS_ATTR_FATTR_NLINK; 3943 } 3944 dprintk("%s: nlink=%u\n", __func__, (unsigned int)*nlink); 3945 return ret; 3946 } 3947 3948 static ssize_t decode_nfs4_string(struct xdr_stream *xdr, 3949 struct nfs4_string *name, gfp_t gfp_flags) 3950 { 3951 ssize_t ret; 3952 3953 ret = xdr_stream_decode_string_dup(xdr, &name->data, 3954 XDR_MAX_NETOBJ, gfp_flags); 3955 name->len = 0; 3956 if (ret > 0) 3957 name->len = ret; 3958 return ret; 3959 } 3960 3961 static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap, 3962 const struct nfs_server *server, kuid_t *uid, 3963 struct nfs4_string *owner_name) 3964 { 3965 ssize_t len; 3966 char *p; 3967 3968 *uid = make_kuid(&init_user_ns, -2); 3969 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER - 1U))) 3970 return -EIO; 3971 if (!(bitmap[1] & FATTR4_WORD1_OWNER)) 3972 return 0; 3973 bitmap[1] &= ~FATTR4_WORD1_OWNER; 3974 3975 if (owner_name != NULL) { 3976 len = decode_nfs4_string(xdr, owner_name, GFP_NOIO); 3977 if (len <= 0) 3978 goto out; 3979 dprintk("%s: name=%s\n", __func__, owner_name->data); 3980 return NFS_ATTR_FATTR_OWNER_NAME; 3981 } else { 3982 len = xdr_stream_decode_opaque_inline(xdr, (void **)&p, 3983 XDR_MAX_NETOBJ); 3984 if (len <= 0 || nfs_map_name_to_uid(server, p, len, uid) != 0) 3985 goto out; 3986 dprintk("%s: uid=%d\n", __func__, (int)from_kuid(&init_user_ns, *uid)); 3987 return NFS_ATTR_FATTR_OWNER; 3988 } 3989 out: 3990 if (len == -EBADMSG) 3991 return -EIO; 3992 return 0; 3993 } 3994 3995 static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap, 3996 const struct nfs_server *server, kgid_t *gid, 3997 struct nfs4_string *group_name) 3998 { 3999 ssize_t len; 4000 char *p; 4001 4002 *gid = make_kgid(&init_user_ns, -2); 4003 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER_GROUP - 1U))) 4004 return -EIO; 4005 if (!(bitmap[1] & FATTR4_WORD1_OWNER_GROUP)) 4006 return 0; 4007 bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP; 4008 4009 if (group_name != NULL) { 4010 len = decode_nfs4_string(xdr, group_name, GFP_NOIO); 4011 if (len <= 0) 4012 goto out; 4013 dprintk("%s: name=%s\n", __func__, group_name->data); 4014 return NFS_ATTR_FATTR_GROUP_NAME; 4015 } else { 4016 len = xdr_stream_decode_opaque_inline(xdr, (void **)&p, 4017 XDR_MAX_NETOBJ); 4018 if (len <= 0 || nfs_map_group_to_gid(server, p, len, gid) != 0) 4019 goto out; 4020 dprintk("%s: gid=%d\n", __func__, (int)from_kgid(&init_user_ns, *gid)); 4021 return NFS_ATTR_FATTR_GROUP; 4022 } 4023 out: 4024 if (len == -EBADMSG) 4025 return -EIO; 4026 return 0; 4027 } 4028 4029 static int decode_attr_rdev(struct xdr_stream *xdr, uint32_t *bitmap, dev_t *rdev) 4030 { 4031 uint32_t major = 0, minor = 0; 4032 __be32 *p; 4033 int ret = 0; 4034 4035 *rdev = MKDEV(0,0); 4036 if (unlikely(bitmap[1] & (FATTR4_WORD1_RAWDEV - 1U))) 4037 return -EIO; 4038 if (likely(bitmap[1] & FATTR4_WORD1_RAWDEV)) { 4039 dev_t tmp; 4040 4041 p = xdr_inline_decode(xdr, 8); 4042 if (unlikely(!p)) 4043 return -EIO; 4044 major = be32_to_cpup(p++); 4045 minor = be32_to_cpup(p); 4046 tmp = MKDEV(major, minor); 4047 if (MAJOR(tmp) == major && MINOR(tmp) == minor) 4048 *rdev = tmp; 4049 bitmap[1] &= ~ FATTR4_WORD1_RAWDEV; 4050 ret = NFS_ATTR_FATTR_RDEV; 4051 } 4052 dprintk("%s: rdev=(0x%x:0x%x)\n", __func__, major, minor); 4053 return ret; 4054 } 4055 4056 static int decode_attr_space_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 4057 { 4058 __be32 *p; 4059 int status = 0; 4060 4061 *res = 0; 4062 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_AVAIL - 1U))) 4063 return -EIO; 4064 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_AVAIL)) { 4065 p = xdr_inline_decode(xdr, 8); 4066 if (unlikely(!p)) 4067 return -EIO; 4068 xdr_decode_hyper(p, res); 4069 bitmap[1] &= ~FATTR4_WORD1_SPACE_AVAIL; 4070 } 4071 dprintk("%s: space avail=%Lu\n", __func__, (unsigned long long)*res); 4072 return status; 4073 } 4074 4075 static int decode_attr_space_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 4076 { 4077 __be32 *p; 4078 int status = 0; 4079 4080 *res = 0; 4081 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_FREE - 1U))) 4082 return -EIO; 4083 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_FREE)) { 4084 p = xdr_inline_decode(xdr, 8); 4085 if (unlikely(!p)) 4086 return -EIO; 4087 xdr_decode_hyper(p, res); 4088 bitmap[1] &= ~FATTR4_WORD1_SPACE_FREE; 4089 } 4090 dprintk("%s: space free=%Lu\n", __func__, (unsigned long long)*res); 4091 return status; 4092 } 4093 4094 static int decode_attr_space_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 4095 { 4096 __be32 *p; 4097 int status = 0; 4098 4099 *res = 0; 4100 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_TOTAL - 1U))) 4101 return -EIO; 4102 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_TOTAL)) { 4103 p = xdr_inline_decode(xdr, 8); 4104 if (unlikely(!p)) 4105 return -EIO; 4106 xdr_decode_hyper(p, res); 4107 bitmap[1] &= ~FATTR4_WORD1_SPACE_TOTAL; 4108 } 4109 dprintk("%s: space total=%Lu\n", __func__, (unsigned long long)*res); 4110 return status; 4111 } 4112 4113 static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *used) 4114 { 4115 __be32 *p; 4116 int ret = 0; 4117 4118 *used = 0; 4119 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_USED - 1U))) 4120 return -EIO; 4121 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_USED)) { 4122 p = xdr_inline_decode(xdr, 8); 4123 if (unlikely(!p)) 4124 return -EIO; 4125 xdr_decode_hyper(p, used); 4126 bitmap[1] &= ~FATTR4_WORD1_SPACE_USED; 4127 ret = NFS_ATTR_FATTR_SPACE_USED; 4128 } 4129 dprintk("%s: space used=%Lu\n", __func__, 4130 (unsigned long long)*used); 4131 return ret; 4132 } 4133 4134 static __be32 * 4135 xdr_decode_nfstime4(__be32 *p, struct timespec64 *t) 4136 { 4137 __u64 sec; 4138 4139 p = xdr_decode_hyper(p, &sec); 4140 t-> tv_sec = sec; 4141 t->tv_nsec = be32_to_cpup(p++); 4142 return p; 4143 } 4144 4145 static int decode_attr_time(struct xdr_stream *xdr, struct timespec64 *time) 4146 { 4147 __be32 *p; 4148 4149 p = xdr_inline_decode(xdr, nfstime4_maxsz << 2); 4150 if (unlikely(!p)) 4151 return -EIO; 4152 xdr_decode_nfstime4(p, time); 4153 return 0; 4154 } 4155 4156 static int decode_attr_time_access(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec64 *time) 4157 { 4158 int status = 0; 4159 4160 time->tv_sec = 0; 4161 time->tv_nsec = 0; 4162 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_ACCESS - 1U))) 4163 return -EIO; 4164 if (likely(bitmap[1] & FATTR4_WORD1_TIME_ACCESS)) { 4165 status = decode_attr_time(xdr, time); 4166 if (status == 0) 4167 status = NFS_ATTR_FATTR_ATIME; 4168 bitmap[1] &= ~FATTR4_WORD1_TIME_ACCESS; 4169 } 4170 dprintk("%s: atime=%lld\n", __func__, time->tv_sec); 4171 return status; 4172 } 4173 4174 static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec64 *time) 4175 { 4176 int status = 0; 4177 4178 time->tv_sec = 0; 4179 time->tv_nsec = 0; 4180 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_METADATA - 1U))) 4181 return -EIO; 4182 if (likely(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) { 4183 status = decode_attr_time(xdr, time); 4184 if (status == 0) 4185 status = NFS_ATTR_FATTR_CTIME; 4186 bitmap[1] &= ~FATTR4_WORD1_TIME_METADATA; 4187 } 4188 dprintk("%s: ctime=%lld\n", __func__, time->tv_sec); 4189 return status; 4190 } 4191 4192 static int decode_attr_time_delta(struct xdr_stream *xdr, uint32_t *bitmap, 4193 struct timespec64 *time) 4194 { 4195 int status = 0; 4196 4197 time->tv_sec = 0; 4198 time->tv_nsec = 0; 4199 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_DELTA - 1U))) 4200 return -EIO; 4201 if (likely(bitmap[1] & FATTR4_WORD1_TIME_DELTA)) { 4202 status = decode_attr_time(xdr, time); 4203 bitmap[1] &= ~FATTR4_WORD1_TIME_DELTA; 4204 } 4205 dprintk("%s: time_delta=%lld %ld\n", __func__, time->tv_sec, 4206 time->tv_nsec); 4207 return status; 4208 } 4209 4210 static int decode_attr_security_label(struct xdr_stream *xdr, uint32_t *bitmap, 4211 struct nfs4_label *label) 4212 { 4213 uint32_t pi = 0; 4214 uint32_t lfs = 0; 4215 __u32 len; 4216 __be32 *p; 4217 int status = 0; 4218 4219 if (unlikely(bitmap[2] & (FATTR4_WORD2_SECURITY_LABEL - 1U))) 4220 return -EIO; 4221 if (likely(bitmap[2] & FATTR4_WORD2_SECURITY_LABEL)) { 4222 p = xdr_inline_decode(xdr, 4); 4223 if (unlikely(!p)) 4224 return -EIO; 4225 lfs = be32_to_cpup(p++); 4226 p = xdr_inline_decode(xdr, 4); 4227 if (unlikely(!p)) 4228 return -EIO; 4229 pi = be32_to_cpup(p++); 4230 p = xdr_inline_decode(xdr, 4); 4231 if (unlikely(!p)) 4232 return -EIO; 4233 len = be32_to_cpup(p++); 4234 p = xdr_inline_decode(xdr, len); 4235 if (unlikely(!p)) 4236 return -EIO; 4237 bitmap[2] &= ~FATTR4_WORD2_SECURITY_LABEL; 4238 if (len < NFS4_MAXLABELLEN) { 4239 if (label) { 4240 if (label->len) { 4241 if (label->len < len) 4242 return -ERANGE; 4243 memcpy(label->label, p, len); 4244 } 4245 label->len = len; 4246 label->pi = pi; 4247 label->lfs = lfs; 4248 status = NFS_ATTR_FATTR_V4_SECURITY_LABEL; 4249 } 4250 } else 4251 printk(KERN_WARNING "%s: label too long (%u)!\n", 4252 __func__, len); 4253 if (label && label->label) 4254 dprintk("%s: label=%.*s, len=%d, PI=%d, LFS=%d\n", 4255 __func__, label->len, (char *)label->label, 4256 label->len, label->pi, label->lfs); 4257 } 4258 return status; 4259 } 4260 4261 static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec64 *time) 4262 { 4263 int status = 0; 4264 4265 time->tv_sec = 0; 4266 time->tv_nsec = 0; 4267 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_MODIFY - 1U))) 4268 return -EIO; 4269 if (likely(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) { 4270 status = decode_attr_time(xdr, time); 4271 if (status == 0) 4272 status = NFS_ATTR_FATTR_MTIME; 4273 bitmap[1] &= ~FATTR4_WORD1_TIME_MODIFY; 4274 } 4275 dprintk("%s: mtime=%lld\n", __func__, time->tv_sec); 4276 return status; 4277 } 4278 4279 static int decode_attr_xattrsupport(struct xdr_stream *xdr, uint32_t *bitmap, 4280 uint32_t *res) 4281 { 4282 __be32 *p; 4283 4284 *res = 0; 4285 if (unlikely(bitmap[2] & (FATTR4_WORD2_XATTR_SUPPORT - 1U))) 4286 return -EIO; 4287 if (likely(bitmap[2] & FATTR4_WORD2_XATTR_SUPPORT)) { 4288 p = xdr_inline_decode(xdr, 4); 4289 if (unlikely(!p)) 4290 return -EIO; 4291 *res = be32_to_cpup(p); 4292 bitmap[2] &= ~FATTR4_WORD2_XATTR_SUPPORT; 4293 } 4294 dprintk("%s: XATTR support=%s\n", __func__, 4295 *res == 0 ? "false" : "true"); 4296 return 0; 4297 } 4298 4299 static int verify_attr_len(struct xdr_stream *xdr, unsigned int savep, uint32_t attrlen) 4300 { 4301 unsigned int attrwords = XDR_QUADLEN(attrlen); 4302 unsigned int nwords = (xdr_stream_pos(xdr) - savep) >> 2; 4303 4304 if (unlikely(attrwords != nwords)) { 4305 dprintk("%s: server returned incorrect attribute length: " 4306 "%u %c %u\n", 4307 __func__, 4308 attrwords << 2, 4309 (attrwords < nwords) ? '<' : '>', 4310 nwords << 2); 4311 return -EIO; 4312 } 4313 return 0; 4314 } 4315 4316 static int decode_change_info(struct xdr_stream *xdr, struct nfs4_change_info *cinfo) 4317 { 4318 __be32 *p; 4319 4320 p = xdr_inline_decode(xdr, 20); 4321 if (unlikely(!p)) 4322 return -EIO; 4323 cinfo->atomic = be32_to_cpup(p++); 4324 p = xdr_decode_hyper(p, &cinfo->before); 4325 xdr_decode_hyper(p, &cinfo->after); 4326 return 0; 4327 } 4328 4329 static int decode_access(struct xdr_stream *xdr, u32 *supported, u32 *access) 4330 { 4331 __be32 *p; 4332 uint32_t supp, acc; 4333 int status; 4334 4335 status = decode_op_hdr(xdr, OP_ACCESS); 4336 if (status) 4337 return status; 4338 p = xdr_inline_decode(xdr, 8); 4339 if (unlikely(!p)) 4340 return -EIO; 4341 supp = be32_to_cpup(p++); 4342 acc = be32_to_cpup(p); 4343 *supported = supp; 4344 *access = acc; 4345 return 0; 4346 } 4347 4348 static int decode_opaque_fixed(struct xdr_stream *xdr, void *buf, size_t len) 4349 { 4350 ssize_t ret = xdr_stream_decode_opaque_fixed(xdr, buf, len); 4351 if (unlikely(ret < 0)) 4352 return -EIO; 4353 return 0; 4354 } 4355 4356 static int decode_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid) 4357 { 4358 return decode_opaque_fixed(xdr, stateid, NFS4_STATEID_SIZE); 4359 } 4360 4361 static int decode_open_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid) 4362 { 4363 stateid->type = NFS4_OPEN_STATEID_TYPE; 4364 return decode_stateid(xdr, stateid); 4365 } 4366 4367 static int decode_lock_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid) 4368 { 4369 stateid->type = NFS4_LOCK_STATEID_TYPE; 4370 return decode_stateid(xdr, stateid); 4371 } 4372 4373 static int decode_delegation_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid) 4374 { 4375 stateid->type = NFS4_DELEGATION_STATEID_TYPE; 4376 return decode_stateid(xdr, stateid); 4377 } 4378 4379 static int decode_invalid_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid) 4380 { 4381 nfs4_stateid dummy; 4382 4383 nfs4_stateid_copy(stateid, &invalid_stateid); 4384 return decode_stateid(xdr, &dummy); 4385 } 4386 4387 static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res) 4388 { 4389 int status; 4390 4391 status = decode_op_hdr(xdr, OP_CLOSE); 4392 if (status != -EIO) 4393 nfs_increment_open_seqid(status, res->seqid); 4394 if (!status) 4395 status = decode_invalid_stateid(xdr, &res->stateid); 4396 return status; 4397 } 4398 4399 static int decode_verifier(struct xdr_stream *xdr, void *verifier) 4400 { 4401 return decode_opaque_fixed(xdr, verifier, NFS4_VERIFIER_SIZE); 4402 } 4403 4404 static int decode_write_verifier(struct xdr_stream *xdr, struct nfs_write_verifier *verifier) 4405 { 4406 return decode_opaque_fixed(xdr, verifier->data, NFS4_VERIFIER_SIZE); 4407 } 4408 4409 static int decode_commit(struct xdr_stream *xdr, struct nfs_commitres *res) 4410 { 4411 struct nfs_writeverf *verf = res->verf; 4412 int status; 4413 4414 status = decode_op_hdr(xdr, OP_COMMIT); 4415 if (!status) 4416 status = decode_write_verifier(xdr, &verf->verifier); 4417 if (!status) 4418 verf->committed = NFS_FILE_SYNC; 4419 return status; 4420 } 4421 4422 static int decode_create(struct xdr_stream *xdr, struct nfs4_change_info *cinfo) 4423 { 4424 __be32 *p; 4425 uint32_t bmlen; 4426 int status; 4427 4428 status = decode_op_hdr(xdr, OP_CREATE); 4429 if (status) 4430 return status; 4431 if ((status = decode_change_info(xdr, cinfo))) 4432 return status; 4433 p = xdr_inline_decode(xdr, 4); 4434 if (unlikely(!p)) 4435 return -EIO; 4436 bmlen = be32_to_cpup(p); 4437 p = xdr_inline_decode(xdr, bmlen << 2); 4438 if (likely(p)) 4439 return 0; 4440 return -EIO; 4441 } 4442 4443 static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_res *res) 4444 { 4445 unsigned int savep; 4446 uint32_t attrlen, bitmap[3] = {0}; 4447 int status; 4448 4449 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) 4450 goto xdr_error; 4451 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) 4452 goto xdr_error; 4453 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) 4454 goto xdr_error; 4455 if ((status = decode_attr_supported(xdr, bitmap, res->attr_bitmask)) != 0) 4456 goto xdr_error; 4457 if ((status = decode_attr_fh_expire_type(xdr, bitmap, 4458 &res->fh_expire_type)) != 0) 4459 goto xdr_error; 4460 if ((status = decode_attr_link_support(xdr, bitmap, &res->has_links)) != 0) 4461 goto xdr_error; 4462 if ((status = decode_attr_symlink_support(xdr, bitmap, &res->has_symlinks)) != 0) 4463 goto xdr_error; 4464 if ((status = decode_attr_aclsupport(xdr, bitmap, &res->acl_bitmask)) != 0) 4465 goto xdr_error; 4466 if ((status = decode_attr_case_insensitive(xdr, bitmap, &res->case_insensitive)) != 0) 4467 goto xdr_error; 4468 if ((status = decode_attr_case_preserving(xdr, bitmap, &res->case_preserving)) != 0) 4469 goto xdr_error; 4470 if ((status = decode_attr_exclcreat_supported(xdr, bitmap, 4471 res->exclcreat_bitmask)) != 0) 4472 goto xdr_error; 4473 status = verify_attr_len(xdr, savep, attrlen); 4474 xdr_error: 4475 dprintk("%s: xdr returned %d!\n", __func__, -status); 4476 return status; 4477 } 4478 4479 static int decode_statfs(struct xdr_stream *xdr, struct nfs_fsstat *fsstat) 4480 { 4481 unsigned int savep; 4482 uint32_t attrlen, bitmap[3] = {0}; 4483 int status; 4484 4485 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) 4486 goto xdr_error; 4487 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) 4488 goto xdr_error; 4489 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) 4490 goto xdr_error; 4491 4492 if ((status = decode_attr_files_avail(xdr, bitmap, &fsstat->afiles)) != 0) 4493 goto xdr_error; 4494 if ((status = decode_attr_files_free(xdr, bitmap, &fsstat->ffiles)) != 0) 4495 goto xdr_error; 4496 if ((status = decode_attr_files_total(xdr, bitmap, &fsstat->tfiles)) != 0) 4497 goto xdr_error; 4498 4499 status = -EIO; 4500 if (unlikely(bitmap[0])) 4501 goto xdr_error; 4502 4503 if ((status = decode_attr_space_avail(xdr, bitmap, &fsstat->abytes)) != 0) 4504 goto xdr_error; 4505 if ((status = decode_attr_space_free(xdr, bitmap, &fsstat->fbytes)) != 0) 4506 goto xdr_error; 4507 if ((status = decode_attr_space_total(xdr, bitmap, &fsstat->tbytes)) != 0) 4508 goto xdr_error; 4509 4510 status = verify_attr_len(xdr, savep, attrlen); 4511 xdr_error: 4512 dprintk("%s: xdr returned %d!\n", __func__, -status); 4513 return status; 4514 } 4515 4516 static int decode_pathconf(struct xdr_stream *xdr, struct nfs_pathconf *pathconf) 4517 { 4518 unsigned int savep; 4519 uint32_t attrlen, bitmap[3] = {0}; 4520 int status; 4521 4522 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) 4523 goto xdr_error; 4524 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) 4525 goto xdr_error; 4526 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) 4527 goto xdr_error; 4528 4529 if ((status = decode_attr_maxlink(xdr, bitmap, &pathconf->max_link)) != 0) 4530 goto xdr_error; 4531 if ((status = decode_attr_maxname(xdr, bitmap, &pathconf->max_namelen)) != 0) 4532 goto xdr_error; 4533 4534 status = verify_attr_len(xdr, savep, attrlen); 4535 xdr_error: 4536 dprintk("%s: xdr returned %d!\n", __func__, -status); 4537 return status; 4538 } 4539 4540 static int decode_threshold_hint(struct xdr_stream *xdr, 4541 uint32_t *bitmap, 4542 uint64_t *res, 4543 uint32_t hint_bit) 4544 { 4545 __be32 *p; 4546 4547 *res = 0; 4548 if (likely(bitmap[0] & hint_bit)) { 4549 p = xdr_inline_decode(xdr, 8); 4550 if (unlikely(!p)) 4551 return -EIO; 4552 xdr_decode_hyper(p, res); 4553 } 4554 return 0; 4555 } 4556 4557 static int decode_first_threshold_item4(struct xdr_stream *xdr, 4558 struct nfs4_threshold *res) 4559 { 4560 __be32 *p; 4561 unsigned int savep; 4562 uint32_t bitmap[3] = {0,}, attrlen; 4563 int status; 4564 4565 /* layout type */ 4566 p = xdr_inline_decode(xdr, 4); 4567 if (unlikely(!p)) 4568 return -EIO; 4569 res->l_type = be32_to_cpup(p); 4570 4571 /* thi_hintset bitmap */ 4572 status = decode_attr_bitmap(xdr, bitmap); 4573 if (status < 0) 4574 goto xdr_error; 4575 4576 /* thi_hintlist length */ 4577 status = decode_attr_length(xdr, &attrlen, &savep); 4578 if (status < 0) 4579 goto xdr_error; 4580 /* thi_hintlist */ 4581 status = decode_threshold_hint(xdr, bitmap, &res->rd_sz, THRESHOLD_RD); 4582 if (status < 0) 4583 goto xdr_error; 4584 status = decode_threshold_hint(xdr, bitmap, &res->wr_sz, THRESHOLD_WR); 4585 if (status < 0) 4586 goto xdr_error; 4587 status = decode_threshold_hint(xdr, bitmap, &res->rd_io_sz, 4588 THRESHOLD_RD_IO); 4589 if (status < 0) 4590 goto xdr_error; 4591 status = decode_threshold_hint(xdr, bitmap, &res->wr_io_sz, 4592 THRESHOLD_WR_IO); 4593 if (status < 0) 4594 goto xdr_error; 4595 4596 status = verify_attr_len(xdr, savep, attrlen); 4597 res->bm = bitmap[0]; 4598 4599 dprintk("%s bm=0x%x rd_sz=%llu wr_sz=%llu rd_io=%llu wr_io=%llu\n", 4600 __func__, res->bm, res->rd_sz, res->wr_sz, res->rd_io_sz, 4601 res->wr_io_sz); 4602 xdr_error: 4603 dprintk("%s ret=%d!\n", __func__, status); 4604 return status; 4605 } 4606 4607 /* 4608 * Thresholds on pNFS direct I/O vrs MDS I/O 4609 */ 4610 static int decode_attr_mdsthreshold(struct xdr_stream *xdr, 4611 uint32_t *bitmap, 4612 struct nfs4_threshold *res) 4613 { 4614 __be32 *p; 4615 int status = 0; 4616 uint32_t num; 4617 4618 if (unlikely(bitmap[2] & (FATTR4_WORD2_MDSTHRESHOLD - 1U))) 4619 return -EIO; 4620 if (bitmap[2] & FATTR4_WORD2_MDSTHRESHOLD) { 4621 /* Did the server return an unrequested attribute? */ 4622 if (unlikely(res == NULL)) 4623 return -EREMOTEIO; 4624 p = xdr_inline_decode(xdr, 4); 4625 if (unlikely(!p)) 4626 return -EIO; 4627 num = be32_to_cpup(p); 4628 if (num == 0) 4629 return 0; 4630 if (num > 1) 4631 printk(KERN_INFO "%s: Warning: Multiple pNFS layout " 4632 "drivers per filesystem not supported\n", 4633 __func__); 4634 4635 status = decode_first_threshold_item4(xdr, res); 4636 bitmap[2] &= ~FATTR4_WORD2_MDSTHRESHOLD; 4637 } 4638 return status; 4639 } 4640 4641 static int decode_getfattr_attrs(struct xdr_stream *xdr, uint32_t *bitmap, 4642 struct nfs_fattr *fattr, struct nfs_fh *fh, 4643 struct nfs4_fs_locations *fs_loc, const struct nfs_server *server) 4644 { 4645 int status; 4646 umode_t fmode = 0; 4647 uint32_t type; 4648 int32_t err; 4649 4650 status = decode_attr_type(xdr, bitmap, &type); 4651 if (status < 0) 4652 goto xdr_error; 4653 fattr->mode = 0; 4654 if (status != 0) { 4655 fattr->mode |= nfs_type2fmt[type]; 4656 fattr->valid |= status; 4657 } 4658 4659 status = decode_attr_change(xdr, bitmap, &fattr->change_attr); 4660 if (status < 0) 4661 goto xdr_error; 4662 fattr->valid |= status; 4663 4664 status = decode_attr_size(xdr, bitmap, &fattr->size); 4665 if (status < 0) 4666 goto xdr_error; 4667 fattr->valid |= status; 4668 4669 status = decode_attr_fsid(xdr, bitmap, &fattr->fsid); 4670 if (status < 0) 4671 goto xdr_error; 4672 fattr->valid |= status; 4673 4674 err = 0; 4675 status = decode_attr_error(xdr, bitmap, &err); 4676 if (status < 0) 4677 goto xdr_error; 4678 4679 status = decode_attr_filehandle(xdr, bitmap, fh); 4680 if (status < 0) 4681 goto xdr_error; 4682 4683 status = decode_attr_fileid(xdr, bitmap, &fattr->fileid); 4684 if (status < 0) 4685 goto xdr_error; 4686 fattr->valid |= status; 4687 4688 status = decode_attr_fs_locations(xdr, bitmap, fs_loc); 4689 if (status < 0) 4690 goto xdr_error; 4691 fattr->valid |= status; 4692 4693 status = -EIO; 4694 if (unlikely(bitmap[0])) 4695 goto xdr_error; 4696 4697 status = decode_attr_mode(xdr, bitmap, &fmode); 4698 if (status < 0) 4699 goto xdr_error; 4700 if (status != 0) { 4701 fattr->mode |= fmode; 4702 fattr->valid |= status; 4703 } 4704 4705 status = decode_attr_nlink(xdr, bitmap, &fattr->nlink); 4706 if (status < 0) 4707 goto xdr_error; 4708 fattr->valid |= status; 4709 4710 status = decode_attr_owner(xdr, bitmap, server, &fattr->uid, fattr->owner_name); 4711 if (status < 0) 4712 goto xdr_error; 4713 fattr->valid |= status; 4714 4715 status = decode_attr_group(xdr, bitmap, server, &fattr->gid, fattr->group_name); 4716 if (status < 0) 4717 goto xdr_error; 4718 fattr->valid |= status; 4719 4720 status = decode_attr_rdev(xdr, bitmap, &fattr->rdev); 4721 if (status < 0) 4722 goto xdr_error; 4723 fattr->valid |= status; 4724 4725 status = decode_attr_space_used(xdr, bitmap, &fattr->du.nfs3.used); 4726 if (status < 0) 4727 goto xdr_error; 4728 fattr->valid |= status; 4729 4730 status = decode_attr_time_access(xdr, bitmap, &fattr->atime); 4731 if (status < 0) 4732 goto xdr_error; 4733 fattr->valid |= status; 4734 4735 status = decode_attr_time_metadata(xdr, bitmap, &fattr->ctime); 4736 if (status < 0) 4737 goto xdr_error; 4738 fattr->valid |= status; 4739 4740 status = decode_attr_time_modify(xdr, bitmap, &fattr->mtime); 4741 if (status < 0) 4742 goto xdr_error; 4743 fattr->valid |= status; 4744 4745 status = decode_attr_mounted_on_fileid(xdr, bitmap, &fattr->mounted_on_fileid); 4746 if (status < 0) 4747 goto xdr_error; 4748 fattr->valid |= status; 4749 4750 status = -EIO; 4751 if (unlikely(bitmap[1])) 4752 goto xdr_error; 4753 4754 status = decode_attr_mdsthreshold(xdr, bitmap, fattr->mdsthreshold); 4755 if (status < 0) 4756 goto xdr_error; 4757 4758 status = decode_attr_security_label(xdr, bitmap, fattr->label); 4759 if (status < 0) 4760 goto xdr_error; 4761 fattr->valid |= status; 4762 4763 xdr_error: 4764 dprintk("%s: xdr returned %d\n", __func__, -status); 4765 return status; 4766 } 4767 4768 static int decode_getfattr_generic(struct xdr_stream *xdr, struct nfs_fattr *fattr, 4769 struct nfs_fh *fh, struct nfs4_fs_locations *fs_loc, 4770 const struct nfs_server *server) 4771 { 4772 unsigned int savep; 4773 uint32_t attrlen, 4774 bitmap[3] = {0}; 4775 int status; 4776 4777 status = decode_op_hdr(xdr, OP_GETATTR); 4778 if (status < 0) 4779 goto xdr_error; 4780 4781 status = decode_attr_bitmap(xdr, bitmap); 4782 if (status < 0) 4783 goto xdr_error; 4784 4785 status = decode_attr_length(xdr, &attrlen, &savep); 4786 if (status < 0) 4787 goto xdr_error; 4788 4789 status = decode_getfattr_attrs(xdr, bitmap, fattr, fh, fs_loc, server); 4790 if (status < 0) 4791 goto xdr_error; 4792 4793 status = verify_attr_len(xdr, savep, attrlen); 4794 xdr_error: 4795 dprintk("%s: xdr returned %d\n", __func__, -status); 4796 return status; 4797 } 4798 4799 static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr, 4800 const struct nfs_server *server) 4801 { 4802 return decode_getfattr_generic(xdr, fattr, NULL, NULL, server); 4803 } 4804 4805 /* 4806 * Decode potentially multiple layout types. 4807 */ 4808 static int decode_pnfs_layout_types(struct xdr_stream *xdr, 4809 struct nfs_fsinfo *fsinfo) 4810 { 4811 __be32 *p; 4812 uint32_t i; 4813 4814 p = xdr_inline_decode(xdr, 4); 4815 if (unlikely(!p)) 4816 return -EIO; 4817 fsinfo->nlayouttypes = be32_to_cpup(p); 4818 4819 /* pNFS is not supported by the underlying file system */ 4820 if (fsinfo->nlayouttypes == 0) 4821 return 0; 4822 4823 /* Decode and set first layout type, move xdr->p past unused types */ 4824 p = xdr_inline_decode(xdr, fsinfo->nlayouttypes * 4); 4825 if (unlikely(!p)) 4826 return -EIO; 4827 4828 /* If we get too many, then just cap it at the max */ 4829 if (fsinfo->nlayouttypes > NFS_MAX_LAYOUT_TYPES) { 4830 printk(KERN_INFO "NFS: %s: Warning: Too many (%u) pNFS layout types\n", 4831 __func__, fsinfo->nlayouttypes); 4832 fsinfo->nlayouttypes = NFS_MAX_LAYOUT_TYPES; 4833 } 4834 4835 for(i = 0; i < fsinfo->nlayouttypes; ++i) 4836 fsinfo->layouttype[i] = be32_to_cpup(p++); 4837 return 0; 4838 } 4839 4840 /* 4841 * The type of file system exported. 4842 * Note we must ensure that layouttype is set in any non-error case. 4843 */ 4844 static int decode_attr_pnfstype(struct xdr_stream *xdr, uint32_t *bitmap, 4845 struct nfs_fsinfo *fsinfo) 4846 { 4847 int status = 0; 4848 4849 dprintk("%s: bitmap is %x\n", __func__, bitmap[1]); 4850 if (unlikely(bitmap[1] & (FATTR4_WORD1_FS_LAYOUT_TYPES - 1U))) 4851 return -EIO; 4852 if (bitmap[1] & FATTR4_WORD1_FS_LAYOUT_TYPES) { 4853 status = decode_pnfs_layout_types(xdr, fsinfo); 4854 bitmap[1] &= ~FATTR4_WORD1_FS_LAYOUT_TYPES; 4855 } 4856 return status; 4857 } 4858 4859 /* 4860 * The prefered block size for layout directed io 4861 */ 4862 static int decode_attr_layout_blksize(struct xdr_stream *xdr, uint32_t *bitmap, 4863 uint32_t *res) 4864 { 4865 __be32 *p; 4866 4867 dprintk("%s: bitmap is %x\n", __func__, bitmap[2]); 4868 *res = 0; 4869 if (bitmap[2] & FATTR4_WORD2_LAYOUT_BLKSIZE) { 4870 p = xdr_inline_decode(xdr, 4); 4871 if (unlikely(!p)) 4872 return -EIO; 4873 *res = be32_to_cpup(p); 4874 bitmap[2] &= ~FATTR4_WORD2_LAYOUT_BLKSIZE; 4875 } 4876 return 0; 4877 } 4878 4879 /* 4880 * The granularity of a CLONE operation. 4881 */ 4882 static int decode_attr_clone_blksize(struct xdr_stream *xdr, uint32_t *bitmap, 4883 uint32_t *res) 4884 { 4885 __be32 *p; 4886 4887 dprintk("%s: bitmap is %x\n", __func__, bitmap[2]); 4888 *res = 0; 4889 if (bitmap[2] & FATTR4_WORD2_CLONE_BLKSIZE) { 4890 p = xdr_inline_decode(xdr, 4); 4891 if (unlikely(!p)) 4892 return -EIO; 4893 *res = be32_to_cpup(p); 4894 bitmap[2] &= ~FATTR4_WORD2_CLONE_BLKSIZE; 4895 } 4896 return 0; 4897 } 4898 4899 static int decode_attr_change_attr_type(struct xdr_stream *xdr, 4900 uint32_t *bitmap, 4901 enum nfs4_change_attr_type *res) 4902 { 4903 u32 tmp = NFS4_CHANGE_TYPE_IS_UNDEFINED; 4904 4905 dprintk("%s: bitmap is %x\n", __func__, bitmap[2]); 4906 if (bitmap[2] & FATTR4_WORD2_CHANGE_ATTR_TYPE) { 4907 if (xdr_stream_decode_u32(xdr, &tmp)) 4908 return -EIO; 4909 bitmap[2] &= ~FATTR4_WORD2_CHANGE_ATTR_TYPE; 4910 } 4911 4912 switch(tmp) { 4913 case NFS4_CHANGE_TYPE_IS_MONOTONIC_INCR: 4914 case NFS4_CHANGE_TYPE_IS_VERSION_COUNTER: 4915 case NFS4_CHANGE_TYPE_IS_VERSION_COUNTER_NOPNFS: 4916 case NFS4_CHANGE_TYPE_IS_TIME_METADATA: 4917 *res = tmp; 4918 break; 4919 default: 4920 *res = NFS4_CHANGE_TYPE_IS_UNDEFINED; 4921 } 4922 return 0; 4923 } 4924 4925 static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo) 4926 { 4927 unsigned int savep; 4928 uint32_t attrlen, bitmap[3]; 4929 int status; 4930 4931 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) 4932 goto xdr_error; 4933 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) 4934 goto xdr_error; 4935 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) 4936 goto xdr_error; 4937 4938 fsinfo->rtmult = fsinfo->wtmult = 512; /* ??? */ 4939 4940 if ((status = decode_attr_lease_time(xdr, bitmap, &fsinfo->lease_time)) != 0) 4941 goto xdr_error; 4942 if ((status = decode_attr_maxfilesize(xdr, bitmap, &fsinfo->maxfilesize)) != 0) 4943 goto xdr_error; 4944 if ((status = decode_attr_maxread(xdr, bitmap, &fsinfo->rtmax)) != 0) 4945 goto xdr_error; 4946 fsinfo->rtpref = fsinfo->dtpref = fsinfo->rtmax; 4947 if ((status = decode_attr_maxwrite(xdr, bitmap, &fsinfo->wtmax)) != 0) 4948 goto xdr_error; 4949 fsinfo->wtpref = fsinfo->wtmax; 4950 4951 status = -EIO; 4952 if (unlikely(bitmap[0])) 4953 goto xdr_error; 4954 4955 status = decode_attr_time_delta(xdr, bitmap, &fsinfo->time_delta); 4956 if (status != 0) 4957 goto xdr_error; 4958 status = decode_attr_pnfstype(xdr, bitmap, fsinfo); 4959 if (status != 0) 4960 goto xdr_error; 4961 4962 status = -EIO; 4963 if (unlikely(bitmap[1])) 4964 goto xdr_error; 4965 4966 status = decode_attr_layout_blksize(xdr, bitmap, &fsinfo->blksize); 4967 if (status) 4968 goto xdr_error; 4969 status = decode_attr_clone_blksize(xdr, bitmap, &fsinfo->clone_blksize); 4970 if (status) 4971 goto xdr_error; 4972 4973 status = decode_attr_change_attr_type(xdr, bitmap, 4974 &fsinfo->change_attr_type); 4975 if (status) 4976 goto xdr_error; 4977 4978 status = decode_attr_xattrsupport(xdr, bitmap, 4979 &fsinfo->xattr_support); 4980 if (status) 4981 goto xdr_error; 4982 4983 status = verify_attr_len(xdr, savep, attrlen); 4984 xdr_error: 4985 dprintk("%s: xdr returned %d!\n", __func__, -status); 4986 return status; 4987 } 4988 4989 static int decode_getfh(struct xdr_stream *xdr, struct nfs_fh *fh) 4990 { 4991 __be32 *p; 4992 uint32_t len; 4993 int status; 4994 4995 /* Zero handle first to allow comparisons */ 4996 memset(fh, 0, sizeof(*fh)); 4997 4998 status = decode_op_hdr(xdr, OP_GETFH); 4999 if (status) 5000 return status; 5001 5002 p = xdr_inline_decode(xdr, 4); 5003 if (unlikely(!p)) 5004 return -EIO; 5005 len = be32_to_cpup(p); 5006 if (len > NFS4_FHSIZE || len == 0) { 5007 trace_nfs4_xdr_bad_filehandle(xdr, OP_GETFH, NFS4ERR_BADHANDLE); 5008 return -EREMOTEIO; 5009 } 5010 fh->size = len; 5011 p = xdr_inline_decode(xdr, len); 5012 if (unlikely(!p)) 5013 return -EIO; 5014 memcpy(fh->data, p, len); 5015 return 0; 5016 } 5017 5018 static int decode_link(struct xdr_stream *xdr, struct nfs4_change_info *cinfo) 5019 { 5020 int status; 5021 5022 status = decode_op_hdr(xdr, OP_LINK); 5023 if (status) 5024 return status; 5025 return decode_change_info(xdr, cinfo); 5026 } 5027 5028 /* 5029 * We create the owner, so we know a proper owner.id length is 4. 5030 */ 5031 static int decode_lock_denied (struct xdr_stream *xdr, struct file_lock *fl) 5032 { 5033 uint64_t offset, length, clientid; 5034 __be32 *p; 5035 uint32_t namelen, type; 5036 5037 p = xdr_inline_decode(xdr, 32); /* read 32 bytes */ 5038 if (unlikely(!p)) 5039 return -EIO; 5040 p = xdr_decode_hyper(p, &offset); /* read 2 8-byte long words */ 5041 p = xdr_decode_hyper(p, &length); 5042 type = be32_to_cpup(p++); /* 4 byte read */ 5043 if (fl != NULL) { /* manipulate file lock */ 5044 fl->fl_start = (loff_t)offset; 5045 fl->fl_end = fl->fl_start + (loff_t)length - 1; 5046 if (length == ~(uint64_t)0) 5047 fl->fl_end = OFFSET_MAX; 5048 fl->fl_type = F_WRLCK; 5049 if (type & 1) 5050 fl->fl_type = F_RDLCK; 5051 fl->fl_pid = 0; 5052 } 5053 p = xdr_decode_hyper(p, &clientid); /* read 8 bytes */ 5054 namelen = be32_to_cpup(p); /* read 4 bytes */ /* have read all 32 bytes now */ 5055 p = xdr_inline_decode(xdr, namelen); /* variable size field */ 5056 if (likely(!p)) 5057 return -EIO; 5058 return -NFS4ERR_DENIED; 5059 } 5060 5061 static int decode_lock(struct xdr_stream *xdr, struct nfs_lock_res *res) 5062 { 5063 int status; 5064 5065 status = decode_op_hdr(xdr, OP_LOCK); 5066 if (status == -EIO) 5067 goto out; 5068 if (status == 0) { 5069 status = decode_lock_stateid(xdr, &res->stateid); 5070 if (unlikely(status)) 5071 goto out; 5072 } else if (status == -NFS4ERR_DENIED) 5073 status = decode_lock_denied(xdr, NULL); 5074 if (res->open_seqid != NULL) 5075 nfs_increment_open_seqid(status, res->open_seqid); 5076 nfs_increment_lock_seqid(status, res->lock_seqid); 5077 out: 5078 return status; 5079 } 5080 5081 static int decode_lockt(struct xdr_stream *xdr, struct nfs_lockt_res *res) 5082 { 5083 int status; 5084 status = decode_op_hdr(xdr, OP_LOCKT); 5085 if (status == -NFS4ERR_DENIED) 5086 return decode_lock_denied(xdr, res->denied); 5087 return status; 5088 } 5089 5090 static int decode_locku(struct xdr_stream *xdr, struct nfs_locku_res *res) 5091 { 5092 int status; 5093 5094 status = decode_op_hdr(xdr, OP_LOCKU); 5095 if (status != -EIO) 5096 nfs_increment_lock_seqid(status, res->seqid); 5097 if (status == 0) 5098 status = decode_lock_stateid(xdr, &res->stateid); 5099 return status; 5100 } 5101 5102 static int decode_release_lockowner(struct xdr_stream *xdr) 5103 { 5104 return decode_op_hdr(xdr, OP_RELEASE_LOCKOWNER); 5105 } 5106 5107 static int decode_lookup(struct xdr_stream *xdr) 5108 { 5109 return decode_op_hdr(xdr, OP_LOOKUP); 5110 } 5111 5112 static int decode_lookupp(struct xdr_stream *xdr) 5113 { 5114 return decode_op_hdr(xdr, OP_LOOKUPP); 5115 } 5116 5117 /* This is too sick! */ 5118 static int decode_space_limit(struct xdr_stream *xdr, 5119 unsigned long *pagemod_limit) 5120 { 5121 __be32 *p; 5122 uint32_t limit_type, nblocks, blocksize; 5123 u64 maxsize = 0; 5124 5125 p = xdr_inline_decode(xdr, 12); 5126 if (unlikely(!p)) 5127 return -EIO; 5128 limit_type = be32_to_cpup(p++); 5129 switch (limit_type) { 5130 case NFS4_LIMIT_SIZE: 5131 xdr_decode_hyper(p, &maxsize); 5132 break; 5133 case NFS4_LIMIT_BLOCKS: 5134 nblocks = be32_to_cpup(p++); 5135 blocksize = be32_to_cpup(p); 5136 maxsize = (uint64_t)nblocks * (uint64_t)blocksize; 5137 } 5138 maxsize >>= PAGE_SHIFT; 5139 *pagemod_limit = min_t(u64, maxsize, ULONG_MAX); 5140 return 0; 5141 } 5142 5143 static int decode_rw_delegation(struct xdr_stream *xdr, 5144 uint32_t delegation_type, 5145 struct nfs_openres *res) 5146 { 5147 __be32 *p; 5148 int status; 5149 5150 status = decode_delegation_stateid(xdr, &res->delegation); 5151 if (unlikely(status)) 5152 return status; 5153 p = xdr_inline_decode(xdr, 4); 5154 if (unlikely(!p)) 5155 return -EIO; 5156 res->do_recall = be32_to_cpup(p); 5157 5158 switch (delegation_type) { 5159 case NFS4_OPEN_DELEGATE_READ: 5160 res->delegation_type = FMODE_READ; 5161 break; 5162 case NFS4_OPEN_DELEGATE_WRITE: 5163 res->delegation_type = FMODE_WRITE|FMODE_READ; 5164 if (decode_space_limit(xdr, &res->pagemod_limit) < 0) 5165 return -EIO; 5166 } 5167 return decode_ace(xdr, NULL); 5168 } 5169 5170 static int decode_no_delegation(struct xdr_stream *xdr, struct nfs_openres *res) 5171 { 5172 __be32 *p; 5173 uint32_t why_no_delegation; 5174 5175 p = xdr_inline_decode(xdr, 4); 5176 if (unlikely(!p)) 5177 return -EIO; 5178 why_no_delegation = be32_to_cpup(p); 5179 switch (why_no_delegation) { 5180 case WND4_CONTENTION: 5181 case WND4_RESOURCE: 5182 xdr_inline_decode(xdr, 4); 5183 /* Ignore for now */ 5184 } 5185 return 0; 5186 } 5187 5188 static int decode_delegation(struct xdr_stream *xdr, struct nfs_openres *res) 5189 { 5190 __be32 *p; 5191 uint32_t delegation_type; 5192 5193 p = xdr_inline_decode(xdr, 4); 5194 if (unlikely(!p)) 5195 return -EIO; 5196 delegation_type = be32_to_cpup(p); 5197 res->delegation_type = 0; 5198 switch (delegation_type) { 5199 case NFS4_OPEN_DELEGATE_NONE: 5200 return 0; 5201 case NFS4_OPEN_DELEGATE_READ: 5202 case NFS4_OPEN_DELEGATE_WRITE: 5203 return decode_rw_delegation(xdr, delegation_type, res); 5204 case NFS4_OPEN_DELEGATE_NONE_EXT: 5205 return decode_no_delegation(xdr, res); 5206 } 5207 return -EIO; 5208 } 5209 5210 static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res) 5211 { 5212 __be32 *p; 5213 uint32_t savewords, bmlen, i; 5214 int status; 5215 5216 if (!__decode_op_hdr(xdr, OP_OPEN, &status)) 5217 return status; 5218 nfs_increment_open_seqid(status, res->seqid); 5219 if (status) 5220 return status; 5221 status = decode_open_stateid(xdr, &res->stateid); 5222 if (unlikely(status)) 5223 return status; 5224 5225 decode_change_info(xdr, &res->cinfo); 5226 5227 p = xdr_inline_decode(xdr, 8); 5228 if (unlikely(!p)) 5229 return -EIO; 5230 res->rflags = be32_to_cpup(p++); 5231 bmlen = be32_to_cpup(p); 5232 if (bmlen > 10) 5233 goto xdr_error; 5234 5235 p = xdr_inline_decode(xdr, bmlen << 2); 5236 if (unlikely(!p)) 5237 return -EIO; 5238 savewords = min_t(uint32_t, bmlen, NFS4_BITMAP_SIZE); 5239 for (i = 0; i < savewords; ++i) 5240 res->attrset[i] = be32_to_cpup(p++); 5241 for (; i < NFS4_BITMAP_SIZE; i++) 5242 res->attrset[i] = 0; 5243 5244 return decode_delegation(xdr, res); 5245 xdr_error: 5246 dprintk("%s: Bitmap too large! Length = %u\n", __func__, bmlen); 5247 return -EIO; 5248 } 5249 5250 static int decode_open_confirm(struct xdr_stream *xdr, struct nfs_open_confirmres *res) 5251 { 5252 int status; 5253 5254 status = decode_op_hdr(xdr, OP_OPEN_CONFIRM); 5255 if (status != -EIO) 5256 nfs_increment_open_seqid(status, res->seqid); 5257 if (!status) 5258 status = decode_open_stateid(xdr, &res->stateid); 5259 return status; 5260 } 5261 5262 static int decode_open_downgrade(struct xdr_stream *xdr, struct nfs_closeres *res) 5263 { 5264 int status; 5265 5266 status = decode_op_hdr(xdr, OP_OPEN_DOWNGRADE); 5267 if (status != -EIO) 5268 nfs_increment_open_seqid(status, res->seqid); 5269 if (!status) 5270 status = decode_open_stateid(xdr, &res->stateid); 5271 return status; 5272 } 5273 5274 static int decode_putfh(struct xdr_stream *xdr) 5275 { 5276 return decode_op_hdr(xdr, OP_PUTFH); 5277 } 5278 5279 static int decode_putrootfh(struct xdr_stream *xdr) 5280 { 5281 return decode_op_hdr(xdr, OP_PUTROOTFH); 5282 } 5283 5284 static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req, 5285 struct nfs_pgio_res *res) 5286 { 5287 __be32 *p; 5288 uint32_t count, eof, recvd; 5289 int status; 5290 5291 status = decode_op_hdr(xdr, OP_READ); 5292 if (status) 5293 return status; 5294 p = xdr_inline_decode(xdr, 8); 5295 if (unlikely(!p)) 5296 return -EIO; 5297 eof = be32_to_cpup(p++); 5298 count = be32_to_cpup(p); 5299 recvd = xdr_read_pages(xdr, count); 5300 if (count > recvd) { 5301 dprintk("NFS: server cheating in read reply: " 5302 "count %u > recvd %u\n", count, recvd); 5303 count = recvd; 5304 eof = 0; 5305 } 5306 res->eof = eof; 5307 res->count = count; 5308 return 0; 5309 } 5310 5311 static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs4_readdir_res *readdir) 5312 { 5313 int status; 5314 __be32 verf[2]; 5315 5316 status = decode_op_hdr(xdr, OP_READDIR); 5317 if (!status) 5318 status = decode_verifier(xdr, readdir->verifier.data); 5319 if (unlikely(status)) 5320 return status; 5321 memcpy(verf, readdir->verifier.data, sizeof(verf)); 5322 dprintk("%s: verifier = %08x:%08x\n", 5323 __func__, verf[0], verf[1]); 5324 return xdr_read_pages(xdr, xdr->buf->page_len); 5325 } 5326 5327 static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req) 5328 { 5329 struct xdr_buf *rcvbuf = &req->rq_rcv_buf; 5330 u32 len, recvd; 5331 __be32 *p; 5332 int status; 5333 5334 status = decode_op_hdr(xdr, OP_READLINK); 5335 if (status) 5336 return status; 5337 5338 /* Convert length of symlink */ 5339 p = xdr_inline_decode(xdr, 4); 5340 if (unlikely(!p)) 5341 return -EIO; 5342 len = be32_to_cpup(p); 5343 if (len >= rcvbuf->page_len || len <= 0) { 5344 dprintk("nfs: server returned giant symlink!\n"); 5345 return -ENAMETOOLONG; 5346 } 5347 recvd = xdr_read_pages(xdr, len); 5348 if (recvd < len) { 5349 dprintk("NFS: server cheating in readlink reply: " 5350 "count %u > recvd %u\n", len, recvd); 5351 return -EIO; 5352 } 5353 /* 5354 * The XDR encode routine has set things up so that 5355 * the link text will be copied directly into the 5356 * buffer. We just have to do overflow-checking, 5357 * and null-terminate the text (the VFS expects 5358 * null-termination). 5359 */ 5360 xdr_terminate_string(rcvbuf, len); 5361 return 0; 5362 } 5363 5364 static int decode_remove(struct xdr_stream *xdr, struct nfs4_change_info *cinfo) 5365 { 5366 int status; 5367 5368 status = decode_op_hdr(xdr, OP_REMOVE); 5369 if (status) 5370 goto out; 5371 status = decode_change_info(xdr, cinfo); 5372 out: 5373 return status; 5374 } 5375 5376 static int decode_rename(struct xdr_stream *xdr, struct nfs4_change_info *old_cinfo, 5377 struct nfs4_change_info *new_cinfo) 5378 { 5379 int status; 5380 5381 status = decode_op_hdr(xdr, OP_RENAME); 5382 if (status) 5383 goto out; 5384 if ((status = decode_change_info(xdr, old_cinfo))) 5385 goto out; 5386 status = decode_change_info(xdr, new_cinfo); 5387 out: 5388 return status; 5389 } 5390 5391 static int decode_renew(struct xdr_stream *xdr) 5392 { 5393 return decode_op_hdr(xdr, OP_RENEW); 5394 } 5395 5396 static int 5397 decode_restorefh(struct xdr_stream *xdr) 5398 { 5399 return decode_op_hdr(xdr, OP_RESTOREFH); 5400 } 5401 5402 static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req, 5403 struct nfs_getaclres *res, enum nfs4_acl_type type) 5404 { 5405 unsigned int savep; 5406 uint32_t attrlen, 5407 bitmap[3] = {0}; 5408 int status; 5409 5410 res->acl_len = 0; 5411 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) 5412 goto out; 5413 5414 xdr_enter_page(xdr, xdr->buf->page_len); 5415 5416 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) 5417 goto out; 5418 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) 5419 goto out; 5420 5421 switch (type) { 5422 default: 5423 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACL - 1U))) 5424 return -EIO; 5425 if (!(bitmap[0] & FATTR4_WORD0_ACL)) 5426 return -EOPNOTSUPP; 5427 break; 5428 case NFS4ACL_DACL: 5429 if (unlikely(bitmap[0] || bitmap[1] & (FATTR4_WORD1_DACL - 1U))) 5430 return -EIO; 5431 if (!(bitmap[1] & FATTR4_WORD1_DACL)) 5432 return -EOPNOTSUPP; 5433 break; 5434 case NFS4ACL_SACL: 5435 if (unlikely(bitmap[0] || bitmap[1] & (FATTR4_WORD1_SACL - 1U))) 5436 return -EIO; 5437 if (!(bitmap[1] & FATTR4_WORD1_SACL)) 5438 return -EOPNOTSUPP; 5439 } 5440 5441 /* The bitmap (xdr len + bitmaps) and the attr xdr len words 5442 * are stored with the acl data to handle the problem of 5443 * variable length bitmaps.*/ 5444 res->acl_data_offset = xdr_page_pos(xdr); 5445 res->acl_len = attrlen; 5446 5447 /* Check for receive buffer overflow */ 5448 if (res->acl_len > xdr_stream_remaining(xdr) || 5449 res->acl_len + res->acl_data_offset > xdr->buf->page_len) { 5450 res->acl_flags |= NFS4_ACL_TRUNC; 5451 dprintk("NFS: acl reply: attrlen %u > page_len %zu\n", 5452 attrlen, xdr_stream_remaining(xdr)); 5453 } 5454 out: 5455 return status; 5456 } 5457 5458 static int 5459 decode_savefh(struct xdr_stream *xdr) 5460 { 5461 return decode_op_hdr(xdr, OP_SAVEFH); 5462 } 5463 5464 static int decode_setattr(struct xdr_stream *xdr) 5465 { 5466 int status; 5467 5468 status = decode_op_hdr(xdr, OP_SETATTR); 5469 if (status) 5470 return status; 5471 if (decode_bitmap4(xdr, NULL, 0) >= 0) 5472 return 0; 5473 return -EIO; 5474 } 5475 5476 static int decode_setclientid(struct xdr_stream *xdr, struct nfs4_setclientid_res *res) 5477 { 5478 __be32 *p; 5479 uint32_t opnum; 5480 int32_t nfserr; 5481 5482 p = xdr_inline_decode(xdr, 8); 5483 if (unlikely(!p)) 5484 return -EIO; 5485 opnum = be32_to_cpup(p++); 5486 if (opnum != OP_SETCLIENTID) { 5487 dprintk("nfs: decode_setclientid: Server returned operation" 5488 " %d\n", opnum); 5489 return -EIO; 5490 } 5491 nfserr = be32_to_cpup(p); 5492 if (nfserr == NFS_OK) { 5493 p = xdr_inline_decode(xdr, 8 + NFS4_VERIFIER_SIZE); 5494 if (unlikely(!p)) 5495 return -EIO; 5496 p = xdr_decode_hyper(p, &res->clientid); 5497 memcpy(res->confirm.data, p, NFS4_VERIFIER_SIZE); 5498 } else if (nfserr == NFSERR_CLID_INUSE) { 5499 uint32_t len; 5500 5501 /* skip netid string */ 5502 p = xdr_inline_decode(xdr, 4); 5503 if (unlikely(!p)) 5504 return -EIO; 5505 len = be32_to_cpup(p); 5506 p = xdr_inline_decode(xdr, len); 5507 if (unlikely(!p)) 5508 return -EIO; 5509 5510 /* skip uaddr string */ 5511 p = xdr_inline_decode(xdr, 4); 5512 if (unlikely(!p)) 5513 return -EIO; 5514 len = be32_to_cpup(p); 5515 p = xdr_inline_decode(xdr, len); 5516 if (unlikely(!p)) 5517 return -EIO; 5518 return -NFSERR_CLID_INUSE; 5519 } else 5520 return nfs4_stat_to_errno(nfserr); 5521 5522 return 0; 5523 } 5524 5525 static int decode_setclientid_confirm(struct xdr_stream *xdr) 5526 { 5527 return decode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM); 5528 } 5529 5530 static int decode_write(struct xdr_stream *xdr, struct nfs_pgio_res *res) 5531 { 5532 __be32 *p; 5533 int status; 5534 5535 status = decode_op_hdr(xdr, OP_WRITE); 5536 if (status) 5537 return status; 5538 5539 p = xdr_inline_decode(xdr, 8); 5540 if (unlikely(!p)) 5541 return -EIO; 5542 res->count = be32_to_cpup(p++); 5543 res->verf->committed = be32_to_cpup(p++); 5544 return decode_write_verifier(xdr, &res->verf->verifier); 5545 } 5546 5547 static int decode_delegreturn(struct xdr_stream *xdr) 5548 { 5549 return decode_op_hdr(xdr, OP_DELEGRETURN); 5550 } 5551 5552 static int decode_secinfo_gss(struct xdr_stream *xdr, 5553 struct nfs4_secinfo4 *flavor) 5554 { 5555 u32 oid_len; 5556 __be32 *p; 5557 5558 p = xdr_inline_decode(xdr, 4); 5559 if (unlikely(!p)) 5560 return -EIO; 5561 oid_len = be32_to_cpup(p); 5562 if (oid_len > GSS_OID_MAX_LEN) 5563 return -EINVAL; 5564 5565 p = xdr_inline_decode(xdr, oid_len); 5566 if (unlikely(!p)) 5567 return -EIO; 5568 memcpy(flavor->flavor_info.oid.data, p, oid_len); 5569 flavor->flavor_info.oid.len = oid_len; 5570 5571 p = xdr_inline_decode(xdr, 8); 5572 if (unlikely(!p)) 5573 return -EIO; 5574 flavor->flavor_info.qop = be32_to_cpup(p++); 5575 flavor->flavor_info.service = be32_to_cpup(p); 5576 5577 return 0; 5578 } 5579 5580 static int decode_secinfo_common(struct xdr_stream *xdr, struct nfs4_secinfo_res *res) 5581 { 5582 struct nfs4_secinfo4 *sec_flavor; 5583 unsigned int i, num_flavors; 5584 int status; 5585 __be32 *p; 5586 5587 p = xdr_inline_decode(xdr, 4); 5588 if (unlikely(!p)) 5589 return -EIO; 5590 5591 res->flavors->num_flavors = 0; 5592 num_flavors = be32_to_cpup(p); 5593 5594 for (i = 0; i < num_flavors; i++) { 5595 sec_flavor = &res->flavors->flavors[i]; 5596 if ((char *)&sec_flavor[1] - (char *)res->flavors > PAGE_SIZE) 5597 break; 5598 5599 p = xdr_inline_decode(xdr, 4); 5600 if (unlikely(!p)) 5601 return -EIO; 5602 sec_flavor->flavor = be32_to_cpup(p); 5603 5604 if (sec_flavor->flavor == RPC_AUTH_GSS) { 5605 status = decode_secinfo_gss(xdr, sec_flavor); 5606 if (status) 5607 goto out; 5608 } 5609 res->flavors->num_flavors++; 5610 } 5611 5612 status = 0; 5613 out: 5614 return status; 5615 } 5616 5617 static int decode_secinfo(struct xdr_stream *xdr, struct nfs4_secinfo_res *res) 5618 { 5619 int status = decode_op_hdr(xdr, OP_SECINFO); 5620 if (status) 5621 return status; 5622 return decode_secinfo_common(xdr, res); 5623 } 5624 5625 #if defined(CONFIG_NFS_V4_1) 5626 static int decode_secinfo_no_name(struct xdr_stream *xdr, struct nfs4_secinfo_res *res) 5627 { 5628 int status = decode_op_hdr(xdr, OP_SECINFO_NO_NAME); 5629 if (status) 5630 return status; 5631 return decode_secinfo_common(xdr, res); 5632 } 5633 5634 static int decode_op_map(struct xdr_stream *xdr, struct nfs4_op_map *op_map) 5635 { 5636 if (xdr_stream_decode_uint32_array(xdr, op_map->u.words, 5637 ARRAY_SIZE(op_map->u.words)) < 0) 5638 return -EIO; 5639 return 0; 5640 } 5641 5642 static int decode_exchange_id(struct xdr_stream *xdr, 5643 struct nfs41_exchange_id_res *res) 5644 { 5645 __be32 *p; 5646 uint32_t dummy; 5647 char *dummy_str; 5648 int status; 5649 uint32_t impl_id_count; 5650 5651 status = decode_op_hdr(xdr, OP_EXCHANGE_ID); 5652 if (status) 5653 return status; 5654 5655 p = xdr_inline_decode(xdr, 8); 5656 if (unlikely(!p)) 5657 return -EIO; 5658 xdr_decode_hyper(p, &res->clientid); 5659 p = xdr_inline_decode(xdr, 12); 5660 if (unlikely(!p)) 5661 return -EIO; 5662 res->seqid = be32_to_cpup(p++); 5663 res->flags = be32_to_cpup(p++); 5664 5665 res->state_protect.how = be32_to_cpup(p); 5666 switch (res->state_protect.how) { 5667 case SP4_NONE: 5668 break; 5669 case SP4_MACH_CRED: 5670 status = decode_op_map(xdr, &res->state_protect.enforce); 5671 if (status) 5672 return status; 5673 status = decode_op_map(xdr, &res->state_protect.allow); 5674 if (status) 5675 return status; 5676 break; 5677 default: 5678 WARN_ON_ONCE(1); 5679 return -EIO; 5680 } 5681 5682 /* server_owner4.so_minor_id */ 5683 p = xdr_inline_decode(xdr, 8); 5684 if (unlikely(!p)) 5685 return -EIO; 5686 p = xdr_decode_hyper(p, &res->server_owner->minor_id); 5687 5688 /* server_owner4.so_major_id */ 5689 status = decode_opaque_inline(xdr, &dummy, &dummy_str); 5690 if (unlikely(status)) 5691 return status; 5692 memcpy(res->server_owner->major_id, dummy_str, dummy); 5693 res->server_owner->major_id_sz = dummy; 5694 5695 /* server_scope4 */ 5696 status = decode_opaque_inline(xdr, &dummy, &dummy_str); 5697 if (unlikely(status)) 5698 return status; 5699 memcpy(res->server_scope->server_scope, dummy_str, dummy); 5700 res->server_scope->server_scope_sz = dummy; 5701 5702 /* Implementation Id */ 5703 p = xdr_inline_decode(xdr, 4); 5704 if (unlikely(!p)) 5705 return -EIO; 5706 impl_id_count = be32_to_cpup(p++); 5707 5708 if (impl_id_count) { 5709 /* nii_domain */ 5710 status = decode_opaque_inline(xdr, &dummy, &dummy_str); 5711 if (unlikely(status)) 5712 return status; 5713 memcpy(res->impl_id->domain, dummy_str, dummy); 5714 5715 /* nii_name */ 5716 status = decode_opaque_inline(xdr, &dummy, &dummy_str); 5717 if (unlikely(status)) 5718 return status; 5719 memcpy(res->impl_id->name, dummy_str, dummy); 5720 5721 /* nii_date */ 5722 p = xdr_inline_decode(xdr, 12); 5723 if (unlikely(!p)) 5724 return -EIO; 5725 p = xdr_decode_hyper(p, &res->impl_id->date.seconds); 5726 res->impl_id->date.nseconds = be32_to_cpup(p); 5727 5728 /* if there's more than one entry, ignore the rest */ 5729 } 5730 return 0; 5731 } 5732 5733 static int decode_chan_attrs(struct xdr_stream *xdr, 5734 struct nfs4_channel_attrs *attrs) 5735 { 5736 __be32 *p; 5737 u32 nr_attrs, val; 5738 5739 p = xdr_inline_decode(xdr, 28); 5740 if (unlikely(!p)) 5741 return -EIO; 5742 val = be32_to_cpup(p++); /* headerpadsz */ 5743 if (val) 5744 return -EINVAL; /* no support for header padding yet */ 5745 attrs->max_rqst_sz = be32_to_cpup(p++); 5746 attrs->max_resp_sz = be32_to_cpup(p++); 5747 attrs->max_resp_sz_cached = be32_to_cpup(p++); 5748 attrs->max_ops = be32_to_cpup(p++); 5749 attrs->max_reqs = be32_to_cpup(p++); 5750 nr_attrs = be32_to_cpup(p); 5751 if (unlikely(nr_attrs > 1)) { 5752 printk(KERN_WARNING "NFS: %s: Invalid rdma channel attrs " 5753 "count %u\n", __func__, nr_attrs); 5754 return -EINVAL; 5755 } 5756 if (nr_attrs == 1) { 5757 p = xdr_inline_decode(xdr, 4); /* skip rdma_attrs */ 5758 if (unlikely(!p)) 5759 return -EIO; 5760 } 5761 return 0; 5762 } 5763 5764 static int decode_sessionid(struct xdr_stream *xdr, struct nfs4_sessionid *sid) 5765 { 5766 return decode_opaque_fixed(xdr, sid->data, NFS4_MAX_SESSIONID_LEN); 5767 } 5768 5769 static int decode_bind_conn_to_session(struct xdr_stream *xdr, 5770 struct nfs41_bind_conn_to_session_res *res) 5771 { 5772 __be32 *p; 5773 int status; 5774 5775 status = decode_op_hdr(xdr, OP_BIND_CONN_TO_SESSION); 5776 if (!status) 5777 status = decode_sessionid(xdr, &res->sessionid); 5778 if (unlikely(status)) 5779 return status; 5780 5781 /* dir flags, rdma mode bool */ 5782 p = xdr_inline_decode(xdr, 8); 5783 if (unlikely(!p)) 5784 return -EIO; 5785 5786 res->dir = be32_to_cpup(p++); 5787 if (res->dir == 0 || res->dir > NFS4_CDFS4_BOTH) 5788 return -EIO; 5789 if (be32_to_cpup(p) == 0) 5790 res->use_conn_in_rdma_mode = false; 5791 else 5792 res->use_conn_in_rdma_mode = true; 5793 5794 return 0; 5795 } 5796 5797 static int decode_create_session(struct xdr_stream *xdr, 5798 struct nfs41_create_session_res *res) 5799 { 5800 __be32 *p; 5801 int status; 5802 5803 status = decode_op_hdr(xdr, OP_CREATE_SESSION); 5804 if (!status) 5805 status = decode_sessionid(xdr, &res->sessionid); 5806 if (unlikely(status)) 5807 return status; 5808 5809 /* seqid, flags */ 5810 p = xdr_inline_decode(xdr, 8); 5811 if (unlikely(!p)) 5812 return -EIO; 5813 res->seqid = be32_to_cpup(p++); 5814 res->flags = be32_to_cpup(p); 5815 5816 /* Channel attributes */ 5817 status = decode_chan_attrs(xdr, &res->fc_attrs); 5818 if (!status) 5819 status = decode_chan_attrs(xdr, &res->bc_attrs); 5820 return status; 5821 } 5822 5823 static int decode_destroy_session(struct xdr_stream *xdr, void *dummy) 5824 { 5825 return decode_op_hdr(xdr, OP_DESTROY_SESSION); 5826 } 5827 5828 static int decode_destroy_clientid(struct xdr_stream *xdr, void *dummy) 5829 { 5830 return decode_op_hdr(xdr, OP_DESTROY_CLIENTID); 5831 } 5832 5833 static int decode_reclaim_complete(struct xdr_stream *xdr, void *dummy) 5834 { 5835 return decode_op_hdr(xdr, OP_RECLAIM_COMPLETE); 5836 } 5837 #endif /* CONFIG_NFS_V4_1 */ 5838 5839 static int decode_sequence(struct xdr_stream *xdr, 5840 struct nfs4_sequence_res *res, 5841 struct rpc_rqst *rqstp) 5842 { 5843 #if defined(CONFIG_NFS_V4_1) 5844 struct nfs4_session *session; 5845 struct nfs4_sessionid id; 5846 u32 dummy; 5847 int status; 5848 __be32 *p; 5849 5850 if (res->sr_slot == NULL) 5851 return 0; 5852 if (!res->sr_slot->table->session) 5853 return 0; 5854 5855 status = decode_op_hdr(xdr, OP_SEQUENCE); 5856 if (!status) 5857 status = decode_sessionid(xdr, &id); 5858 if (unlikely(status)) 5859 goto out_err; 5860 5861 /* 5862 * If the server returns different values for sessionID, slotID or 5863 * sequence number, the server is looney tunes. 5864 */ 5865 status = -EREMOTEIO; 5866 session = res->sr_slot->table->session; 5867 5868 if (memcmp(id.data, session->sess_id.data, 5869 NFS4_MAX_SESSIONID_LEN)) { 5870 dprintk("%s Invalid session id\n", __func__); 5871 goto out_err; 5872 } 5873 5874 p = xdr_inline_decode(xdr, 20); 5875 if (unlikely(!p)) 5876 goto out_overflow; 5877 5878 /* seqid */ 5879 dummy = be32_to_cpup(p++); 5880 if (dummy != res->sr_slot->seq_nr) { 5881 dprintk("%s Invalid sequence number\n", __func__); 5882 goto out_err; 5883 } 5884 /* slot id */ 5885 dummy = be32_to_cpup(p++); 5886 if (dummy != res->sr_slot->slot_nr) { 5887 dprintk("%s Invalid slot id\n", __func__); 5888 goto out_err; 5889 } 5890 /* highest slot id */ 5891 res->sr_highest_slotid = be32_to_cpup(p++); 5892 /* target highest slot id */ 5893 res->sr_target_highest_slotid = be32_to_cpup(p++); 5894 /* result flags */ 5895 res->sr_status_flags = be32_to_cpup(p); 5896 status = 0; 5897 out_err: 5898 res->sr_status = status; 5899 return status; 5900 out_overflow: 5901 status = -EIO; 5902 goto out_err; 5903 #else /* CONFIG_NFS_V4_1 */ 5904 return 0; 5905 #endif /* CONFIG_NFS_V4_1 */ 5906 } 5907 5908 #if defined(CONFIG_NFS_V4_1) 5909 static int decode_layout_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid) 5910 { 5911 stateid->type = NFS4_LAYOUT_STATEID_TYPE; 5912 return decode_stateid(xdr, stateid); 5913 } 5914 5915 static int decode_getdeviceinfo(struct xdr_stream *xdr, 5916 struct nfs4_getdeviceinfo_res *res) 5917 { 5918 struct pnfs_device *pdev = res->pdev; 5919 __be32 *p; 5920 uint32_t len, type; 5921 int status; 5922 5923 status = decode_op_hdr(xdr, OP_GETDEVICEINFO); 5924 if (status) { 5925 if (status == -ETOOSMALL) { 5926 p = xdr_inline_decode(xdr, 4); 5927 if (unlikely(!p)) 5928 return -EIO; 5929 pdev->mincount = be32_to_cpup(p); 5930 dprintk("%s: Min count too small. mincnt = %u\n", 5931 __func__, pdev->mincount); 5932 } 5933 return status; 5934 } 5935 5936 p = xdr_inline_decode(xdr, 8); 5937 if (unlikely(!p)) 5938 return -EIO; 5939 type = be32_to_cpup(p++); 5940 if (type != pdev->layout_type) { 5941 dprintk("%s: layout mismatch req: %u pdev: %u\n", 5942 __func__, pdev->layout_type, type); 5943 return -EINVAL; 5944 } 5945 /* 5946 * Get the length of the opaque device_addr4. xdr_read_pages places 5947 * the opaque device_addr4 in the xdr_buf->pages (pnfs_device->pages) 5948 * and places the remaining xdr data in xdr_buf->tail 5949 */ 5950 pdev->mincount = be32_to_cpup(p); 5951 if (xdr_read_pages(xdr, pdev->mincount) != pdev->mincount) 5952 return -EIO; 5953 5954 /* Parse notification bitmap, verifying that it is zero. */ 5955 p = xdr_inline_decode(xdr, 4); 5956 if (unlikely(!p)) 5957 return -EIO; 5958 len = be32_to_cpup(p); 5959 if (len) { 5960 uint32_t i; 5961 5962 p = xdr_inline_decode(xdr, 4 * len); 5963 if (unlikely(!p)) 5964 return -EIO; 5965 5966 res->notification = be32_to_cpup(p++); 5967 for (i = 1; i < len; i++) { 5968 if (be32_to_cpup(p++)) { 5969 dprintk("%s: unsupported notification\n", 5970 __func__); 5971 return -EIO; 5972 } 5973 } 5974 } 5975 return 0; 5976 } 5977 5978 static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req, 5979 struct nfs4_layoutget_res *res) 5980 { 5981 __be32 *p; 5982 int status; 5983 u32 layout_count; 5984 u32 recvd; 5985 5986 status = decode_op_hdr(xdr, OP_LAYOUTGET); 5987 if (status) 5988 goto out; 5989 p = xdr_inline_decode(xdr, 4); 5990 if (unlikely(!p)) 5991 goto out_overflow; 5992 res->return_on_close = be32_to_cpup(p); 5993 decode_layout_stateid(xdr, &res->stateid); 5994 p = xdr_inline_decode(xdr, 4); 5995 if (unlikely(!p)) 5996 goto out_overflow; 5997 layout_count = be32_to_cpup(p); 5998 if (!layout_count) { 5999 dprintk("%s: server responded with empty layout array\n", 6000 __func__); 6001 status = -EINVAL; 6002 goto out; 6003 } 6004 6005 p = xdr_inline_decode(xdr, 28); 6006 if (unlikely(!p)) 6007 goto out_overflow; 6008 p = xdr_decode_hyper(p, &res->range.offset); 6009 p = xdr_decode_hyper(p, &res->range.length); 6010 res->range.iomode = be32_to_cpup(p++); 6011 res->type = be32_to_cpup(p++); 6012 res->layoutp->len = be32_to_cpup(p); 6013 6014 dprintk("%s roff:%lu rlen:%lu riomode:%d, lo_type:0x%x, lo.len:%d\n", 6015 __func__, 6016 (unsigned long)res->range.offset, 6017 (unsigned long)res->range.length, 6018 res->range.iomode, 6019 res->type, 6020 res->layoutp->len); 6021 6022 recvd = xdr_read_pages(xdr, res->layoutp->len); 6023 if (res->layoutp->len > recvd) { 6024 dprintk("NFS: server cheating in layoutget reply: " 6025 "layout len %u > recvd %u\n", 6026 res->layoutp->len, recvd); 6027 status = -EINVAL; 6028 goto out; 6029 } 6030 6031 if (layout_count > 1) { 6032 /* We only handle a length one array at the moment. Any 6033 * further entries are just ignored. Note that this means 6034 * the client may see a response that is less than the 6035 * minimum it requested. 6036 */ 6037 dprintk("%s: server responded with %d layouts, dropping tail\n", 6038 __func__, layout_count); 6039 } 6040 6041 out: 6042 res->status = status; 6043 return status; 6044 out_overflow: 6045 status = -EIO; 6046 goto out; 6047 } 6048 6049 static int decode_layoutreturn(struct xdr_stream *xdr, 6050 struct nfs4_layoutreturn_res *res) 6051 { 6052 __be32 *p; 6053 int status; 6054 6055 status = decode_op_hdr(xdr, OP_LAYOUTRETURN); 6056 if (status) 6057 return status; 6058 p = xdr_inline_decode(xdr, 4); 6059 if (unlikely(!p)) 6060 return -EIO; 6061 res->lrs_present = be32_to_cpup(p); 6062 if (res->lrs_present) 6063 status = decode_layout_stateid(xdr, &res->stateid); 6064 else 6065 nfs4_stateid_copy(&res->stateid, &invalid_stateid); 6066 return status; 6067 } 6068 6069 static int decode_layoutcommit(struct xdr_stream *xdr, 6070 struct rpc_rqst *req, 6071 struct nfs4_layoutcommit_res *res) 6072 { 6073 __be32 *p; 6074 __u32 sizechanged; 6075 int status; 6076 6077 status = decode_op_hdr(xdr, OP_LAYOUTCOMMIT); 6078 res->status = status; 6079 if (status) 6080 return status; 6081 6082 p = xdr_inline_decode(xdr, 4); 6083 if (unlikely(!p)) 6084 return -EIO; 6085 sizechanged = be32_to_cpup(p); 6086 6087 if (sizechanged) { 6088 /* throw away new size */ 6089 p = xdr_inline_decode(xdr, 8); 6090 if (unlikely(!p)) 6091 return -EIO; 6092 } 6093 return 0; 6094 } 6095 6096 static int decode_test_stateid(struct xdr_stream *xdr, 6097 struct nfs41_test_stateid_res *res) 6098 { 6099 __be32 *p; 6100 int status; 6101 int num_res; 6102 6103 status = decode_op_hdr(xdr, OP_TEST_STATEID); 6104 if (status) 6105 return status; 6106 6107 p = xdr_inline_decode(xdr, 4); 6108 if (unlikely(!p)) 6109 return -EIO; 6110 num_res = be32_to_cpup(p++); 6111 if (num_res != 1) 6112 return -EIO; 6113 6114 p = xdr_inline_decode(xdr, 4); 6115 if (unlikely(!p)) 6116 return -EIO; 6117 res->status = be32_to_cpup(p++); 6118 6119 return status; 6120 } 6121 6122 static int decode_free_stateid(struct xdr_stream *xdr, 6123 struct nfs41_free_stateid_res *res) 6124 { 6125 res->status = decode_op_hdr(xdr, OP_FREE_STATEID); 6126 return res->status; 6127 } 6128 #else 6129 static inline 6130 int decode_layoutreturn(struct xdr_stream *xdr, 6131 struct nfs4_layoutreturn_res *res) 6132 { 6133 return 0; 6134 } 6135 6136 static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req, 6137 struct nfs4_layoutget_res *res) 6138 { 6139 return 0; 6140 } 6141 6142 #endif /* CONFIG_NFS_V4_1 */ 6143 6144 /* 6145 * END OF "GENERIC" DECODE ROUTINES. 6146 */ 6147 6148 /* 6149 * Decode OPEN_DOWNGRADE response 6150 */ 6151 static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp, 6152 struct xdr_stream *xdr, 6153 void *data) 6154 { 6155 struct nfs_closeres *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 if (res->lr_res) { 6169 status = decode_layoutreturn(xdr, res->lr_res); 6170 res->lr_ret = status; 6171 if (status) 6172 goto out; 6173 } 6174 status = decode_open_downgrade(xdr, res); 6175 out: 6176 return status; 6177 } 6178 6179 /* 6180 * Decode ACCESS response 6181 */ 6182 static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6183 void *data) 6184 { 6185 struct nfs4_accessres *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 != 0) 6197 goto out; 6198 status = decode_access(xdr, &res->supported, &res->access); 6199 if (status != 0) 6200 goto out; 6201 if (res->fattr) 6202 decode_getfattr(xdr, res->fattr, res->server); 6203 out: 6204 return status; 6205 } 6206 6207 /* 6208 * Decode LOOKUP response 6209 */ 6210 static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6211 void *data) 6212 { 6213 struct nfs4_lookup_res *res = data; 6214 struct compound_hdr hdr; 6215 int status; 6216 6217 status = decode_compound_hdr(xdr, &hdr); 6218 if (status) 6219 goto out; 6220 status = decode_sequence(xdr, &res->seq_res, rqstp); 6221 if (status) 6222 goto out; 6223 status = decode_putfh(xdr); 6224 if (status) 6225 goto out; 6226 status = decode_lookup(xdr); 6227 if (status) 6228 goto out; 6229 status = decode_getfh(xdr, res->fh); 6230 if (status) 6231 goto out; 6232 status = decode_getfattr(xdr, res->fattr, res->server); 6233 out: 6234 return status; 6235 } 6236 6237 /* 6238 * Decode LOOKUPP response 6239 */ 6240 static int nfs4_xdr_dec_lookupp(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6241 void *data) 6242 { 6243 struct nfs4_lookupp_res *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_lookupp(xdr); 6257 if (status) 6258 goto out; 6259 status = decode_getfh(xdr, res->fh); 6260 if (status) 6261 goto out; 6262 status = decode_getfattr(xdr, res->fattr, res->server); 6263 out: 6264 return status; 6265 } 6266 6267 /* 6268 * Decode LOOKUP_ROOT response 6269 */ 6270 static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp, 6271 struct xdr_stream *xdr, 6272 void *data) 6273 { 6274 struct nfs4_lookup_res *res = data; 6275 struct compound_hdr hdr; 6276 int status; 6277 6278 status = decode_compound_hdr(xdr, &hdr); 6279 if (status) 6280 goto out; 6281 status = decode_sequence(xdr, &res->seq_res, rqstp); 6282 if (status) 6283 goto out; 6284 status = decode_putrootfh(xdr); 6285 if (status) 6286 goto out; 6287 status = decode_getfh(xdr, res->fh); 6288 if (status == 0) 6289 status = decode_getfattr(xdr, res->fattr, res->server); 6290 out: 6291 return status; 6292 } 6293 6294 /* 6295 * Decode REMOVE response 6296 */ 6297 static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6298 void *data) 6299 { 6300 struct nfs_removeres *res = data; 6301 struct compound_hdr hdr; 6302 int status; 6303 6304 status = decode_compound_hdr(xdr, &hdr); 6305 if (status) 6306 goto out; 6307 status = decode_sequence(xdr, &res->seq_res, rqstp); 6308 if (status) 6309 goto out; 6310 status = decode_putfh(xdr); 6311 if (status) 6312 goto out; 6313 status = decode_remove(xdr, &res->cinfo); 6314 out: 6315 return status; 6316 } 6317 6318 /* 6319 * Decode RENAME response 6320 */ 6321 static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6322 void *data) 6323 { 6324 struct nfs_renameres *res = data; 6325 struct compound_hdr hdr; 6326 int status; 6327 6328 status = decode_compound_hdr(xdr, &hdr); 6329 if (status) 6330 goto out; 6331 status = decode_sequence(xdr, &res->seq_res, rqstp); 6332 if (status) 6333 goto out; 6334 status = decode_putfh(xdr); 6335 if (status) 6336 goto out; 6337 status = decode_savefh(xdr); 6338 if (status) 6339 goto out; 6340 status = decode_putfh(xdr); 6341 if (status) 6342 goto out; 6343 status = decode_rename(xdr, &res->old_cinfo, &res->new_cinfo); 6344 out: 6345 return status; 6346 } 6347 6348 /* 6349 * Decode LINK response 6350 */ 6351 static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6352 void *data) 6353 { 6354 struct nfs4_link_res *res = data; 6355 struct compound_hdr hdr; 6356 int status; 6357 6358 status = decode_compound_hdr(xdr, &hdr); 6359 if (status) 6360 goto out; 6361 status = decode_sequence(xdr, &res->seq_res, rqstp); 6362 if (status) 6363 goto out; 6364 status = decode_putfh(xdr); 6365 if (status) 6366 goto out; 6367 status = decode_savefh(xdr); 6368 if (status) 6369 goto out; 6370 status = decode_putfh(xdr); 6371 if (status) 6372 goto out; 6373 status = decode_link(xdr, &res->cinfo); 6374 if (status) 6375 goto out; 6376 /* 6377 * Note order: OP_LINK leaves the directory as the current 6378 * filehandle. 6379 */ 6380 status = decode_restorefh(xdr); 6381 if (status) 6382 goto out; 6383 decode_getfattr(xdr, res->fattr, res->server); 6384 out: 6385 return status; 6386 } 6387 6388 /* 6389 * Decode CREATE response 6390 */ 6391 static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6392 void *data) 6393 { 6394 struct nfs4_create_res *res = data; 6395 struct compound_hdr hdr; 6396 int status; 6397 6398 status = decode_compound_hdr(xdr, &hdr); 6399 if (status) 6400 goto out; 6401 status = decode_sequence(xdr, &res->seq_res, rqstp); 6402 if (status) 6403 goto out; 6404 status = decode_putfh(xdr); 6405 if (status) 6406 goto out; 6407 status = decode_create(xdr, &res->dir_cinfo); 6408 if (status) 6409 goto out; 6410 status = decode_getfh(xdr, res->fh); 6411 if (status) 6412 goto out; 6413 decode_getfattr(xdr, res->fattr, res->server); 6414 out: 6415 return status; 6416 } 6417 6418 /* 6419 * Decode SYMLINK response 6420 */ 6421 static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6422 void *res) 6423 { 6424 return nfs4_xdr_dec_create(rqstp, xdr, res); 6425 } 6426 6427 /* 6428 * Decode GETATTR response 6429 */ 6430 static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6431 void *data) 6432 { 6433 struct nfs4_getattr_res *res = data; 6434 struct compound_hdr hdr; 6435 int status; 6436 6437 status = decode_compound_hdr(xdr, &hdr); 6438 if (status) 6439 goto out; 6440 status = decode_sequence(xdr, &res->seq_res, rqstp); 6441 if (status) 6442 goto out; 6443 status = decode_putfh(xdr); 6444 if (status) 6445 goto out; 6446 status = decode_getfattr(xdr, res->fattr, res->server); 6447 out: 6448 return status; 6449 } 6450 6451 /* 6452 * Encode an SETACL request 6453 */ 6454 static void nfs4_xdr_enc_setacl(struct rpc_rqst *req, struct xdr_stream *xdr, 6455 const void *data) 6456 { 6457 const struct nfs_setaclargs *args = data; 6458 struct compound_hdr hdr = { 6459 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 6460 }; 6461 6462 encode_compound_hdr(xdr, req, &hdr); 6463 encode_sequence(xdr, &args->seq_args, &hdr); 6464 encode_putfh(xdr, args->fh, &hdr); 6465 encode_setacl(xdr, args, &hdr); 6466 encode_nops(&hdr); 6467 } 6468 6469 /* 6470 * Decode SETACL response 6471 */ 6472 static int 6473 nfs4_xdr_dec_setacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6474 void *data) 6475 { 6476 struct nfs_setaclres *res = data; 6477 struct compound_hdr hdr; 6478 int status; 6479 6480 status = decode_compound_hdr(xdr, &hdr); 6481 if (status) 6482 goto out; 6483 status = decode_sequence(xdr, &res->seq_res, rqstp); 6484 if (status) 6485 goto out; 6486 status = decode_putfh(xdr); 6487 if (status) 6488 goto out; 6489 status = decode_setattr(xdr); 6490 out: 6491 return status; 6492 } 6493 6494 /* 6495 * Decode GETACL response 6496 */ 6497 static int 6498 nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6499 void *data) 6500 { 6501 struct nfs_getaclres *res = data; 6502 struct compound_hdr hdr; 6503 int status; 6504 6505 if (res->acl_scratch != NULL) 6506 xdr_set_scratch_page(xdr, res->acl_scratch); 6507 status = decode_compound_hdr(xdr, &hdr); 6508 if (status) 6509 goto out; 6510 status = decode_sequence(xdr, &res->seq_res, rqstp); 6511 if (status) 6512 goto out; 6513 status = decode_putfh(xdr); 6514 if (status) 6515 goto out; 6516 status = decode_getacl(xdr, rqstp, res, res->acl_type); 6517 6518 out: 6519 return status; 6520 } 6521 6522 /* 6523 * Decode CLOSE response 6524 */ 6525 static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6526 void *data) 6527 { 6528 struct nfs_closeres *res = data; 6529 struct compound_hdr hdr; 6530 int status; 6531 6532 status = decode_compound_hdr(xdr, &hdr); 6533 if (status) 6534 goto out; 6535 status = decode_sequence(xdr, &res->seq_res, rqstp); 6536 if (status) 6537 goto out; 6538 status = decode_putfh(xdr); 6539 if (status) 6540 goto out; 6541 if (res->lr_res) { 6542 status = decode_layoutreturn(xdr, res->lr_res); 6543 res->lr_ret = status; 6544 if (status) 6545 goto out; 6546 } 6547 if (res->fattr != NULL) { 6548 status = decode_getfattr(xdr, res->fattr, res->server); 6549 if (status != 0) 6550 goto out; 6551 } 6552 status = decode_close(xdr, res); 6553 out: 6554 return status; 6555 } 6556 6557 /* 6558 * Decode OPEN response 6559 */ 6560 static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, 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 status = decode_getfh(xdr, &res->fh); 6580 if (status) 6581 goto out; 6582 if (res->access_request) 6583 decode_access(xdr, &res->access_supported, &res->access_result); 6584 decode_getfattr(xdr, res->f_attr, res->server); 6585 if (res->lg_res) 6586 decode_layoutget(xdr, rqstp, res->lg_res); 6587 out: 6588 return status; 6589 } 6590 6591 /* 6592 * Decode OPEN_CONFIRM response 6593 */ 6594 static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp, 6595 struct xdr_stream *xdr, 6596 void *data) 6597 { 6598 struct nfs_open_confirmres *res = data; 6599 struct compound_hdr hdr; 6600 int status; 6601 6602 status = decode_compound_hdr(xdr, &hdr); 6603 if (status) 6604 goto out; 6605 status = decode_putfh(xdr); 6606 if (status) 6607 goto out; 6608 status = decode_open_confirm(xdr, res); 6609 out: 6610 return status; 6611 } 6612 6613 /* 6614 * Decode OPEN response 6615 */ 6616 static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp, 6617 struct xdr_stream *xdr, 6618 void *data) 6619 { 6620 struct nfs_openres *res = data; 6621 struct compound_hdr hdr; 6622 int status; 6623 6624 status = decode_compound_hdr(xdr, &hdr); 6625 if (status) 6626 goto out; 6627 status = decode_sequence(xdr, &res->seq_res, rqstp); 6628 if (status) 6629 goto out; 6630 status = decode_putfh(xdr); 6631 if (status) 6632 goto out; 6633 status = decode_open(xdr, res); 6634 if (status) 6635 goto out; 6636 if (res->access_request) 6637 decode_access(xdr, &res->access_supported, &res->access_result); 6638 decode_getfattr(xdr, res->f_attr, res->server); 6639 if (res->lg_res) 6640 decode_layoutget(xdr, rqstp, res->lg_res); 6641 out: 6642 return status; 6643 } 6644 6645 /* 6646 * Decode SETATTR response 6647 */ 6648 static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp, 6649 struct xdr_stream *xdr, 6650 void *data) 6651 { 6652 struct nfs_setattrres *res = data; 6653 struct compound_hdr hdr; 6654 int status; 6655 6656 status = decode_compound_hdr(xdr, &hdr); 6657 if (status) 6658 goto out; 6659 status = decode_sequence(xdr, &res->seq_res, rqstp); 6660 if (status) 6661 goto out; 6662 status = decode_putfh(xdr); 6663 if (status) 6664 goto out; 6665 status = decode_setattr(xdr); 6666 if (status) 6667 goto out; 6668 decode_getfattr(xdr, res->fattr, res->server); 6669 out: 6670 return status; 6671 } 6672 6673 /* 6674 * Decode LOCK response 6675 */ 6676 static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6677 void *data) 6678 { 6679 struct nfs_lock_res *res = data; 6680 struct compound_hdr hdr; 6681 int status; 6682 6683 status = decode_compound_hdr(xdr, &hdr); 6684 if (status) 6685 goto out; 6686 status = decode_sequence(xdr, &res->seq_res, rqstp); 6687 if (status) 6688 goto out; 6689 status = decode_putfh(xdr); 6690 if (status) 6691 goto out; 6692 status = decode_lock(xdr, res); 6693 out: 6694 return status; 6695 } 6696 6697 /* 6698 * Decode LOCKT response 6699 */ 6700 static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6701 void *data) 6702 { 6703 struct nfs_lockt_res *res = data; 6704 struct compound_hdr hdr; 6705 int status; 6706 6707 status = decode_compound_hdr(xdr, &hdr); 6708 if (status) 6709 goto out; 6710 status = decode_sequence(xdr, &res->seq_res, rqstp); 6711 if (status) 6712 goto out; 6713 status = decode_putfh(xdr); 6714 if (status) 6715 goto out; 6716 status = decode_lockt(xdr, res); 6717 out: 6718 return status; 6719 } 6720 6721 /* 6722 * Decode LOCKU response 6723 */ 6724 static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6725 void *data) 6726 { 6727 struct nfs_locku_res *res = data; 6728 struct compound_hdr hdr; 6729 int status; 6730 6731 status = decode_compound_hdr(xdr, &hdr); 6732 if (status) 6733 goto out; 6734 status = decode_sequence(xdr, &res->seq_res, rqstp); 6735 if (status) 6736 goto out; 6737 status = decode_putfh(xdr); 6738 if (status) 6739 goto out; 6740 status = decode_locku(xdr, res); 6741 out: 6742 return status; 6743 } 6744 6745 static int nfs4_xdr_dec_release_lockowner(struct rpc_rqst *rqstp, 6746 struct xdr_stream *xdr, void *dummy) 6747 { 6748 struct compound_hdr hdr; 6749 int status; 6750 6751 status = decode_compound_hdr(xdr, &hdr); 6752 if (!status) 6753 status = decode_release_lockowner(xdr); 6754 return status; 6755 } 6756 6757 /* 6758 * Decode READLINK response 6759 */ 6760 static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp, 6761 struct xdr_stream *xdr, 6762 void *data) 6763 { 6764 struct nfs4_readlink_res *res = data; 6765 struct compound_hdr hdr; 6766 int status; 6767 6768 status = decode_compound_hdr(xdr, &hdr); 6769 if (status) 6770 goto out; 6771 status = decode_sequence(xdr, &res->seq_res, rqstp); 6772 if (status) 6773 goto out; 6774 status = decode_putfh(xdr); 6775 if (status) 6776 goto out; 6777 status = decode_readlink(xdr, rqstp); 6778 out: 6779 return status; 6780 } 6781 6782 /* 6783 * Decode READDIR response 6784 */ 6785 static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6786 void *data) 6787 { 6788 struct nfs4_readdir_res *res = data; 6789 struct compound_hdr hdr; 6790 int status; 6791 6792 status = decode_compound_hdr(xdr, &hdr); 6793 if (status) 6794 goto out; 6795 status = decode_sequence(xdr, &res->seq_res, rqstp); 6796 if (status) 6797 goto out; 6798 status = decode_putfh(xdr); 6799 if (status) 6800 goto out; 6801 status = decode_readdir(xdr, rqstp, res); 6802 out: 6803 return status; 6804 } 6805 6806 /* 6807 * Decode Read response 6808 */ 6809 static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6810 void *data) 6811 { 6812 struct nfs_pgio_res *res = data; 6813 struct compound_hdr hdr; 6814 int status; 6815 6816 status = decode_compound_hdr(xdr, &hdr); 6817 res->op_status = hdr.status; 6818 if (status) 6819 goto out; 6820 status = decode_sequence(xdr, &res->seq_res, rqstp); 6821 if (status) 6822 goto out; 6823 status = decode_putfh(xdr); 6824 if (status) 6825 goto out; 6826 status = decode_read(xdr, rqstp, res); 6827 if (!status) 6828 status = res->count; 6829 out: 6830 return status; 6831 } 6832 6833 /* 6834 * Decode WRITE response 6835 */ 6836 static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6837 void *data) 6838 { 6839 struct nfs_pgio_res *res = data; 6840 struct compound_hdr hdr; 6841 int status; 6842 6843 status = decode_compound_hdr(xdr, &hdr); 6844 res->op_status = hdr.status; 6845 if (status) 6846 goto out; 6847 status = decode_sequence(xdr, &res->seq_res, rqstp); 6848 if (status) 6849 goto out; 6850 status = decode_putfh(xdr); 6851 if (status) 6852 goto out; 6853 status = decode_write(xdr, res); 6854 if (status) 6855 goto out; 6856 if (res->fattr) 6857 decode_getfattr(xdr, res->fattr, res->server); 6858 if (!status) 6859 status = res->count; 6860 out: 6861 return status; 6862 } 6863 6864 /* 6865 * Decode COMMIT response 6866 */ 6867 static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6868 void *data) 6869 { 6870 struct nfs_commitres *res = data; 6871 struct compound_hdr hdr; 6872 int status; 6873 6874 status = decode_compound_hdr(xdr, &hdr); 6875 res->op_status = hdr.status; 6876 if (status) 6877 goto out; 6878 status = decode_sequence(xdr, &res->seq_res, rqstp); 6879 if (status) 6880 goto out; 6881 status = decode_putfh(xdr); 6882 if (status) 6883 goto out; 6884 status = decode_commit(xdr, res); 6885 out: 6886 return status; 6887 } 6888 6889 /* 6890 * Decode FSINFO response 6891 */ 6892 static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr, 6893 void *data) 6894 { 6895 struct nfs4_fsinfo_res *res = data; 6896 struct compound_hdr hdr; 6897 int status; 6898 6899 status = decode_compound_hdr(xdr, &hdr); 6900 if (!status) 6901 status = decode_sequence(xdr, &res->seq_res, req); 6902 if (!status) 6903 status = decode_putfh(xdr); 6904 if (!status) 6905 status = decode_fsinfo(xdr, res->fsinfo); 6906 return status; 6907 } 6908 6909 /* 6910 * Decode PATHCONF response 6911 */ 6912 static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr, 6913 void *data) 6914 { 6915 struct nfs4_pathconf_res *res = data; 6916 struct compound_hdr hdr; 6917 int status; 6918 6919 status = decode_compound_hdr(xdr, &hdr); 6920 if (!status) 6921 status = decode_sequence(xdr, &res->seq_res, req); 6922 if (!status) 6923 status = decode_putfh(xdr); 6924 if (!status) 6925 status = decode_pathconf(xdr, res->pathconf); 6926 return status; 6927 } 6928 6929 /* 6930 * Decode STATFS response 6931 */ 6932 static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, struct xdr_stream *xdr, 6933 void *data) 6934 { 6935 struct nfs4_statfs_res *res = data; 6936 struct compound_hdr hdr; 6937 int status; 6938 6939 status = decode_compound_hdr(xdr, &hdr); 6940 if (!status) 6941 status = decode_sequence(xdr, &res->seq_res, req); 6942 if (!status) 6943 status = decode_putfh(xdr); 6944 if (!status) 6945 status = decode_statfs(xdr, res->fsstat); 6946 return status; 6947 } 6948 6949 /* 6950 * Decode GETATTR_BITMAP response 6951 */ 6952 static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req, 6953 struct xdr_stream *xdr, 6954 void *data) 6955 { 6956 struct nfs4_server_caps_res *res = data; 6957 struct compound_hdr hdr; 6958 int status; 6959 6960 status = decode_compound_hdr(xdr, &hdr); 6961 if (status) 6962 goto out; 6963 status = decode_sequence(xdr, &res->seq_res, req); 6964 if (status) 6965 goto out; 6966 status = decode_putfh(xdr); 6967 if (status) 6968 goto out; 6969 status = decode_server_caps(xdr, res); 6970 out: 6971 return status; 6972 } 6973 6974 /* 6975 * Decode RENEW response 6976 */ 6977 static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6978 void *__unused) 6979 { 6980 struct compound_hdr hdr; 6981 int status; 6982 6983 status = decode_compound_hdr(xdr, &hdr); 6984 if (!status) 6985 status = decode_renew(xdr); 6986 return status; 6987 } 6988 6989 /* 6990 * Decode SETCLIENTID response 6991 */ 6992 static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req, 6993 struct xdr_stream *xdr, 6994 void *data) 6995 { 6996 struct nfs4_setclientid_res *res = data; 6997 struct compound_hdr hdr; 6998 int status; 6999 7000 status = decode_compound_hdr(xdr, &hdr); 7001 if (!status) 7002 status = decode_setclientid(xdr, res); 7003 return status; 7004 } 7005 7006 /* 7007 * Decode SETCLIENTID_CONFIRM response 7008 */ 7009 static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req, 7010 struct xdr_stream *xdr, 7011 void *data) 7012 { 7013 struct compound_hdr hdr; 7014 int status; 7015 7016 status = decode_compound_hdr(xdr, &hdr); 7017 if (!status) 7018 status = decode_setclientid_confirm(xdr); 7019 return status; 7020 } 7021 7022 /* 7023 * Decode DELEGRETURN response 7024 */ 7025 static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp, 7026 struct xdr_stream *xdr, 7027 void *data) 7028 { 7029 struct nfs4_delegreturnres *res = data; 7030 struct compound_hdr hdr; 7031 int status; 7032 7033 status = decode_compound_hdr(xdr, &hdr); 7034 if (status) 7035 goto out; 7036 status = decode_sequence(xdr, &res->seq_res, rqstp); 7037 if (status) 7038 goto out; 7039 status = decode_putfh(xdr); 7040 if (status != 0) 7041 goto out; 7042 if (res->lr_res) { 7043 status = decode_layoutreturn(xdr, res->lr_res); 7044 res->lr_ret = status; 7045 if (status) 7046 goto out; 7047 } 7048 if (res->fattr) { 7049 status = decode_getfattr(xdr, res->fattr, res->server); 7050 if (status != 0) 7051 goto out; 7052 } 7053 status = decode_delegreturn(xdr); 7054 out: 7055 return status; 7056 } 7057 7058 /* 7059 * Decode FS_LOCATIONS response 7060 */ 7061 static int nfs4_xdr_dec_fs_locations(struct rpc_rqst *req, 7062 struct xdr_stream *xdr, 7063 void *data) 7064 { 7065 struct nfs4_fs_locations_res *res = data; 7066 struct compound_hdr hdr; 7067 int status; 7068 7069 status = decode_compound_hdr(xdr, &hdr); 7070 if (status) 7071 goto out; 7072 status = decode_sequence(xdr, &res->seq_res, req); 7073 if (status) 7074 goto out; 7075 status = decode_putfh(xdr); 7076 if (status) 7077 goto out; 7078 if (res->migration) { 7079 xdr_enter_page(xdr, PAGE_SIZE); 7080 status = decode_getfattr_generic(xdr, 7081 res->fs_locations->fattr, 7082 NULL, res->fs_locations, 7083 res->fs_locations->server); 7084 if (status) 7085 goto out; 7086 if (res->renew) 7087 status = decode_renew(xdr); 7088 } else { 7089 status = decode_lookup(xdr); 7090 if (status) 7091 goto out; 7092 xdr_enter_page(xdr, PAGE_SIZE); 7093 status = decode_getfattr_generic(xdr, 7094 res->fs_locations->fattr, 7095 NULL, res->fs_locations, 7096 res->fs_locations->server); 7097 } 7098 out: 7099 return status; 7100 } 7101 7102 /* 7103 * Decode SECINFO response 7104 */ 7105 static int nfs4_xdr_dec_secinfo(struct rpc_rqst *rqstp, 7106 struct xdr_stream *xdr, 7107 void *data) 7108 { 7109 struct nfs4_secinfo_res *res = data; 7110 struct compound_hdr hdr; 7111 int status; 7112 7113 status = decode_compound_hdr(xdr, &hdr); 7114 if (status) 7115 goto out; 7116 status = decode_sequence(xdr, &res->seq_res, rqstp); 7117 if (status) 7118 goto out; 7119 status = decode_putfh(xdr); 7120 if (status) 7121 goto out; 7122 status = decode_secinfo(xdr, res); 7123 out: 7124 return status; 7125 } 7126 7127 /* 7128 * Decode FSID_PRESENT response 7129 */ 7130 static int nfs4_xdr_dec_fsid_present(struct rpc_rqst *rqstp, 7131 struct xdr_stream *xdr, 7132 void *data) 7133 { 7134 struct nfs4_fsid_present_res *res = data; 7135 struct compound_hdr hdr; 7136 int status; 7137 7138 status = decode_compound_hdr(xdr, &hdr); 7139 if (status) 7140 goto out; 7141 status = decode_sequence(xdr, &res->seq_res, rqstp); 7142 if (status) 7143 goto out; 7144 status = decode_putfh(xdr); 7145 if (status) 7146 goto out; 7147 status = decode_getfh(xdr, res->fh); 7148 if (status) 7149 goto out; 7150 if (res->renew) 7151 status = decode_renew(xdr); 7152 out: 7153 return status; 7154 } 7155 7156 #if defined(CONFIG_NFS_V4_1) 7157 /* 7158 * Decode BIND_CONN_TO_SESSION response 7159 */ 7160 static int nfs4_xdr_dec_bind_conn_to_session(struct rpc_rqst *rqstp, 7161 struct xdr_stream *xdr, 7162 void *res) 7163 { 7164 struct compound_hdr hdr; 7165 int status; 7166 7167 status = decode_compound_hdr(xdr, &hdr); 7168 if (!status) 7169 status = decode_bind_conn_to_session(xdr, res); 7170 return status; 7171 } 7172 7173 /* 7174 * Decode EXCHANGE_ID response 7175 */ 7176 static int nfs4_xdr_dec_exchange_id(struct rpc_rqst *rqstp, 7177 struct xdr_stream *xdr, 7178 void *res) 7179 { 7180 struct compound_hdr hdr; 7181 int status; 7182 7183 status = decode_compound_hdr(xdr, &hdr); 7184 if (!status) 7185 status = decode_exchange_id(xdr, res); 7186 return status; 7187 } 7188 7189 /* 7190 * Decode CREATE_SESSION response 7191 */ 7192 static int nfs4_xdr_dec_create_session(struct rpc_rqst *rqstp, 7193 struct xdr_stream *xdr, 7194 void *res) 7195 { 7196 struct compound_hdr hdr; 7197 int status; 7198 7199 status = decode_compound_hdr(xdr, &hdr); 7200 if (!status) 7201 status = decode_create_session(xdr, res); 7202 return status; 7203 } 7204 7205 /* 7206 * Decode DESTROY_SESSION response 7207 */ 7208 static int nfs4_xdr_dec_destroy_session(struct rpc_rqst *rqstp, 7209 struct xdr_stream *xdr, 7210 void *res) 7211 { 7212 struct compound_hdr hdr; 7213 int status; 7214 7215 status = decode_compound_hdr(xdr, &hdr); 7216 if (!status) 7217 status = decode_destroy_session(xdr, res); 7218 return status; 7219 } 7220 7221 /* 7222 * Decode DESTROY_CLIENTID response 7223 */ 7224 static int nfs4_xdr_dec_destroy_clientid(struct rpc_rqst *rqstp, 7225 struct xdr_stream *xdr, 7226 void *res) 7227 { 7228 struct compound_hdr hdr; 7229 int status; 7230 7231 status = decode_compound_hdr(xdr, &hdr); 7232 if (!status) 7233 status = decode_destroy_clientid(xdr, res); 7234 return status; 7235 } 7236 7237 /* 7238 * Decode SEQUENCE response 7239 */ 7240 static int nfs4_xdr_dec_sequence(struct rpc_rqst *rqstp, 7241 struct xdr_stream *xdr, 7242 void *res) 7243 { 7244 struct compound_hdr hdr; 7245 int status; 7246 7247 status = decode_compound_hdr(xdr, &hdr); 7248 if (!status) 7249 status = decode_sequence(xdr, res, rqstp); 7250 return status; 7251 } 7252 7253 #endif 7254 7255 /* 7256 * Decode GET_LEASE_TIME response 7257 */ 7258 static int nfs4_xdr_dec_get_lease_time(struct rpc_rqst *rqstp, 7259 struct xdr_stream *xdr, 7260 void *data) 7261 { 7262 struct nfs4_get_lease_time_res *res = data; 7263 struct compound_hdr hdr; 7264 int status; 7265 7266 status = decode_compound_hdr(xdr, &hdr); 7267 if (!status) 7268 status = decode_sequence(xdr, &res->lr_seq_res, rqstp); 7269 if (!status) 7270 status = decode_putrootfh(xdr); 7271 if (!status) 7272 status = decode_fsinfo(xdr, res->lr_fsinfo); 7273 return status; 7274 } 7275 7276 #ifdef CONFIG_NFS_V4_1 7277 7278 /* 7279 * Decode RECLAIM_COMPLETE response 7280 */ 7281 static int nfs4_xdr_dec_reclaim_complete(struct rpc_rqst *rqstp, 7282 struct xdr_stream *xdr, 7283 void *data) 7284 { 7285 struct nfs41_reclaim_complete_res *res = data; 7286 struct compound_hdr hdr; 7287 int status; 7288 7289 status = decode_compound_hdr(xdr, &hdr); 7290 if (!status) 7291 status = decode_sequence(xdr, &res->seq_res, rqstp); 7292 if (!status) 7293 status = decode_reclaim_complete(xdr, NULL); 7294 return status; 7295 } 7296 7297 /* 7298 * Decode GETDEVINFO response 7299 */ 7300 static int nfs4_xdr_dec_getdeviceinfo(struct rpc_rqst *rqstp, 7301 struct xdr_stream *xdr, 7302 void *data) 7303 { 7304 struct nfs4_getdeviceinfo_res *res = data; 7305 struct compound_hdr hdr; 7306 int status; 7307 7308 status = decode_compound_hdr(xdr, &hdr); 7309 if (status != 0) 7310 goto out; 7311 status = decode_sequence(xdr, &res->seq_res, rqstp); 7312 if (status != 0) 7313 goto out; 7314 status = decode_getdeviceinfo(xdr, res); 7315 out: 7316 return status; 7317 } 7318 7319 /* 7320 * Decode LAYOUTGET response 7321 */ 7322 static int nfs4_xdr_dec_layoutget(struct rpc_rqst *rqstp, 7323 struct xdr_stream *xdr, 7324 void *data) 7325 { 7326 struct nfs4_layoutget_res *res = data; 7327 struct compound_hdr hdr; 7328 int status; 7329 7330 status = decode_compound_hdr(xdr, &hdr); 7331 if (status) 7332 goto out; 7333 status = decode_sequence(xdr, &res->seq_res, rqstp); 7334 if (status) 7335 goto out; 7336 status = decode_putfh(xdr); 7337 if (status) 7338 goto out; 7339 status = decode_layoutget(xdr, rqstp, res); 7340 out: 7341 return status; 7342 } 7343 7344 /* 7345 * Decode LAYOUTRETURN response 7346 */ 7347 static int nfs4_xdr_dec_layoutreturn(struct rpc_rqst *rqstp, 7348 struct xdr_stream *xdr, 7349 void *data) 7350 { 7351 struct nfs4_layoutreturn_res *res = data; 7352 struct compound_hdr hdr; 7353 int status; 7354 7355 status = decode_compound_hdr(xdr, &hdr); 7356 if (status) 7357 goto out; 7358 status = decode_sequence(xdr, &res->seq_res, rqstp); 7359 if (status) 7360 goto out; 7361 status = decode_putfh(xdr); 7362 if (status) 7363 goto out; 7364 status = decode_layoutreturn(xdr, res); 7365 out: 7366 return status; 7367 } 7368 7369 /* 7370 * Decode LAYOUTCOMMIT response 7371 */ 7372 static int nfs4_xdr_dec_layoutcommit(struct rpc_rqst *rqstp, 7373 struct xdr_stream *xdr, 7374 void *data) 7375 { 7376 struct nfs4_layoutcommit_res *res = data; 7377 struct compound_hdr hdr; 7378 int status; 7379 7380 status = decode_compound_hdr(xdr, &hdr); 7381 if (status) 7382 goto out; 7383 status = decode_sequence(xdr, &res->seq_res, rqstp); 7384 if (status) 7385 goto out; 7386 status = decode_putfh(xdr); 7387 if (status) 7388 goto out; 7389 status = decode_layoutcommit(xdr, rqstp, res); 7390 if (status) 7391 goto out; 7392 decode_getfattr(xdr, res->fattr, res->server); 7393 out: 7394 return status; 7395 } 7396 7397 /* 7398 * Decode SECINFO_NO_NAME response 7399 */ 7400 static int nfs4_xdr_dec_secinfo_no_name(struct rpc_rqst *rqstp, 7401 struct xdr_stream *xdr, 7402 void *data) 7403 { 7404 struct nfs4_secinfo_res *res = data; 7405 struct compound_hdr hdr; 7406 int status; 7407 7408 status = decode_compound_hdr(xdr, &hdr); 7409 if (status) 7410 goto out; 7411 status = decode_sequence(xdr, &res->seq_res, rqstp); 7412 if (status) 7413 goto out; 7414 status = decode_putrootfh(xdr); 7415 if (status) 7416 goto out; 7417 status = decode_secinfo_no_name(xdr, res); 7418 out: 7419 return status; 7420 } 7421 7422 /* 7423 * Decode TEST_STATEID response 7424 */ 7425 static int nfs4_xdr_dec_test_stateid(struct rpc_rqst *rqstp, 7426 struct xdr_stream *xdr, 7427 void *data) 7428 { 7429 struct nfs41_test_stateid_res *res = data; 7430 struct compound_hdr hdr; 7431 int status; 7432 7433 status = decode_compound_hdr(xdr, &hdr); 7434 if (status) 7435 goto out; 7436 status = decode_sequence(xdr, &res->seq_res, rqstp); 7437 if (status) 7438 goto out; 7439 status = decode_test_stateid(xdr, res); 7440 out: 7441 return status; 7442 } 7443 7444 /* 7445 * Decode FREE_STATEID response 7446 */ 7447 static int nfs4_xdr_dec_free_stateid(struct rpc_rqst *rqstp, 7448 struct xdr_stream *xdr, 7449 void *data) 7450 { 7451 struct nfs41_free_stateid_res *res = data; 7452 struct compound_hdr hdr; 7453 int status; 7454 7455 status = decode_compound_hdr(xdr, &hdr); 7456 if (status) 7457 goto out; 7458 status = decode_sequence(xdr, &res->seq_res, rqstp); 7459 if (status) 7460 goto out; 7461 status = decode_free_stateid(xdr, res); 7462 out: 7463 return status; 7464 } 7465 #endif /* CONFIG_NFS_V4_1 */ 7466 7467 /** 7468 * nfs4_decode_dirent - Decode a single NFSv4 directory entry stored in 7469 * the local page cache. 7470 * @xdr: XDR stream where entry resides 7471 * @entry: buffer to fill in with entry data 7472 * @plus: boolean indicating whether this should be a readdirplus entry 7473 * 7474 * Returns zero if successful, otherwise a negative errno value is 7475 * returned. 7476 * 7477 * This function is not invoked during READDIR reply decoding, but 7478 * rather whenever an application invokes the getdents(2) system call 7479 * on a directory already in our cache. 7480 */ 7481 int nfs4_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry, 7482 bool plus) 7483 { 7484 unsigned int savep; 7485 uint32_t bitmap[3] = {0}; 7486 uint32_t len; 7487 uint64_t new_cookie; 7488 __be32 *p = xdr_inline_decode(xdr, 4); 7489 if (unlikely(!p)) 7490 return -EAGAIN; 7491 if (*p == xdr_zero) { 7492 p = xdr_inline_decode(xdr, 4); 7493 if (unlikely(!p)) 7494 return -EAGAIN; 7495 if (*p == xdr_zero) 7496 return -EAGAIN; 7497 entry->eof = 1; 7498 return -EBADCOOKIE; 7499 } 7500 7501 p = xdr_inline_decode(xdr, 12); 7502 if (unlikely(!p)) 7503 return -EAGAIN; 7504 p = xdr_decode_hyper(p, &new_cookie); 7505 entry->len = be32_to_cpup(p); 7506 7507 p = xdr_inline_decode(xdr, entry->len); 7508 if (unlikely(!p)) 7509 return -EAGAIN; 7510 entry->name = (const char *) p; 7511 7512 /* 7513 * In case the server doesn't return an inode number, 7514 * we fake one here. (We don't use inode number 0, 7515 * since glibc seems to choke on it...) 7516 */ 7517 entry->ino = 1; 7518 entry->fattr->valid = 0; 7519 7520 if (decode_attr_bitmap(xdr, bitmap) < 0) 7521 return -EAGAIN; 7522 7523 if (decode_attr_length(xdr, &len, &savep) < 0) 7524 return -EAGAIN; 7525 7526 if (decode_getfattr_attrs(xdr, bitmap, entry->fattr, entry->fh, 7527 NULL, entry->server) < 0) 7528 return -EAGAIN; 7529 if (entry->fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID) 7530 entry->ino = entry->fattr->mounted_on_fileid; 7531 else if (entry->fattr->valid & NFS_ATTR_FATTR_FILEID) 7532 entry->ino = entry->fattr->fileid; 7533 7534 entry->d_type = DT_UNKNOWN; 7535 if (entry->fattr->valid & NFS_ATTR_FATTR_TYPE) 7536 entry->d_type = nfs_umode_to_dtype(entry->fattr->mode); 7537 7538 entry->cookie = new_cookie; 7539 7540 return 0; 7541 } 7542 7543 /* 7544 * We need to translate between nfs status return values and 7545 * the local errno values which may not be the same. 7546 */ 7547 static struct { 7548 int stat; 7549 int errno; 7550 } nfs_errtbl[] = { 7551 { NFS4_OK, 0 }, 7552 { NFS4ERR_PERM, -EPERM }, 7553 { NFS4ERR_NOENT, -ENOENT }, 7554 { NFS4ERR_IO, -errno_NFSERR_IO}, 7555 { NFS4ERR_NXIO, -ENXIO }, 7556 { NFS4ERR_ACCESS, -EACCES }, 7557 { NFS4ERR_EXIST, -EEXIST }, 7558 { NFS4ERR_XDEV, -EXDEV }, 7559 { NFS4ERR_NOTDIR, -ENOTDIR }, 7560 { NFS4ERR_ISDIR, -EISDIR }, 7561 { NFS4ERR_INVAL, -EINVAL }, 7562 { NFS4ERR_FBIG, -EFBIG }, 7563 { NFS4ERR_NOSPC, -ENOSPC }, 7564 { NFS4ERR_ROFS, -EROFS }, 7565 { NFS4ERR_MLINK, -EMLINK }, 7566 { NFS4ERR_NAMETOOLONG, -ENAMETOOLONG }, 7567 { NFS4ERR_NOTEMPTY, -ENOTEMPTY }, 7568 { NFS4ERR_DQUOT, -EDQUOT }, 7569 { NFS4ERR_STALE, -ESTALE }, 7570 { NFS4ERR_BADHANDLE, -EBADHANDLE }, 7571 { NFS4ERR_BAD_COOKIE, -EBADCOOKIE }, 7572 { NFS4ERR_NOTSUPP, -ENOTSUPP }, 7573 { NFS4ERR_TOOSMALL, -ETOOSMALL }, 7574 { NFS4ERR_SERVERFAULT, -EREMOTEIO }, 7575 { NFS4ERR_BADTYPE, -EBADTYPE }, 7576 { NFS4ERR_LOCKED, -EAGAIN }, 7577 { NFS4ERR_SYMLINK, -ELOOP }, 7578 { NFS4ERR_OP_ILLEGAL, -EOPNOTSUPP }, 7579 { NFS4ERR_DEADLOCK, -EDEADLK }, 7580 { NFS4ERR_NOXATTR, -ENODATA }, 7581 { NFS4ERR_XATTR2BIG, -E2BIG }, 7582 { -1, -EIO } 7583 }; 7584 7585 /* 7586 * Convert an NFS error code to a local one. 7587 * This one is used jointly by NFSv2 and NFSv3. 7588 */ 7589 static int 7590 nfs4_stat_to_errno(int stat) 7591 { 7592 int i; 7593 for (i = 0; nfs_errtbl[i].stat != -1; i++) { 7594 if (nfs_errtbl[i].stat == stat) 7595 return nfs_errtbl[i].errno; 7596 } 7597 if (stat <= 10000 || stat > 10100) { 7598 /* The server is looney tunes. */ 7599 return -EREMOTEIO; 7600 } 7601 /* If we cannot translate the error, the recovery routines should 7602 * handle it. 7603 * Note: remaining NFSv4 error codes have values > 10000, so should 7604 * not conflict with native Linux error codes. 7605 */ 7606 return -stat; 7607 } 7608 7609 #ifdef CONFIG_NFS_V4_2 7610 #include "nfs42xdr.c" 7611 #endif /* CONFIG_NFS_V4_2 */ 7612 7613 #define PROC(proc, argtype, restype) \ 7614 [NFSPROC4_CLNT_##proc] = { \ 7615 .p_proc = NFSPROC4_COMPOUND, \ 7616 .p_encode = nfs4_xdr_##argtype, \ 7617 .p_decode = nfs4_xdr_##restype, \ 7618 .p_arglen = NFS4_##argtype##_sz, \ 7619 .p_replen = NFS4_##restype##_sz, \ 7620 .p_statidx = NFSPROC4_CLNT_##proc, \ 7621 .p_name = #proc, \ 7622 } 7623 7624 #define STUB(proc) \ 7625 [NFSPROC4_CLNT_##proc] = { \ 7626 .p_name = #proc, \ 7627 } 7628 7629 #if defined(CONFIG_NFS_V4_1) 7630 #define PROC41(proc, argtype, restype) \ 7631 PROC(proc, argtype, restype) 7632 #else 7633 #define PROC41(proc, argtype, restype) \ 7634 STUB(proc) 7635 #endif 7636 7637 #if defined(CONFIG_NFS_V4_2) 7638 #define PROC42(proc, argtype, restype) \ 7639 PROC(proc, argtype, restype) 7640 #else 7641 #define PROC42(proc, argtype, restype) \ 7642 STUB(proc) 7643 #endif 7644 7645 const struct rpc_procinfo nfs4_procedures[] = { 7646 PROC(READ, enc_read, dec_read), 7647 PROC(WRITE, enc_write, dec_write), 7648 PROC(COMMIT, enc_commit, dec_commit), 7649 PROC(OPEN, enc_open, dec_open), 7650 PROC(OPEN_CONFIRM, enc_open_confirm, dec_open_confirm), 7651 PROC(OPEN_NOATTR, enc_open_noattr, dec_open_noattr), 7652 PROC(OPEN_DOWNGRADE, enc_open_downgrade, dec_open_downgrade), 7653 PROC(CLOSE, enc_close, dec_close), 7654 PROC(SETATTR, enc_setattr, dec_setattr), 7655 PROC(FSINFO, enc_fsinfo, dec_fsinfo), 7656 PROC(RENEW, enc_renew, dec_renew), 7657 PROC(SETCLIENTID, enc_setclientid, dec_setclientid), 7658 PROC(SETCLIENTID_CONFIRM, enc_setclientid_confirm, dec_setclientid_confirm), 7659 PROC(LOCK, enc_lock, dec_lock), 7660 PROC(LOCKT, enc_lockt, dec_lockt), 7661 PROC(LOCKU, enc_locku, dec_locku), 7662 PROC(ACCESS, enc_access, dec_access), 7663 PROC(GETATTR, enc_getattr, dec_getattr), 7664 PROC(LOOKUP, enc_lookup, dec_lookup), 7665 PROC(LOOKUP_ROOT, enc_lookup_root, dec_lookup_root), 7666 PROC(REMOVE, enc_remove, dec_remove), 7667 PROC(RENAME, enc_rename, dec_rename), 7668 PROC(LINK, enc_link, dec_link), 7669 PROC(SYMLINK, enc_symlink, dec_symlink), 7670 PROC(CREATE, enc_create, dec_create), 7671 PROC(PATHCONF, enc_pathconf, dec_pathconf), 7672 PROC(STATFS, enc_statfs, dec_statfs), 7673 PROC(READLINK, enc_readlink, dec_readlink), 7674 PROC(READDIR, enc_readdir, dec_readdir), 7675 PROC(SERVER_CAPS, enc_server_caps, dec_server_caps), 7676 PROC(DELEGRETURN, enc_delegreturn, dec_delegreturn), 7677 PROC(GETACL, enc_getacl, dec_getacl), 7678 PROC(SETACL, enc_setacl, dec_setacl), 7679 PROC(FS_LOCATIONS, enc_fs_locations, dec_fs_locations), 7680 PROC(RELEASE_LOCKOWNER, enc_release_lockowner, dec_release_lockowner), 7681 PROC(SECINFO, enc_secinfo, dec_secinfo), 7682 PROC(FSID_PRESENT, enc_fsid_present, dec_fsid_present), 7683 PROC41(EXCHANGE_ID, enc_exchange_id, dec_exchange_id), 7684 PROC41(CREATE_SESSION, enc_create_session, dec_create_session), 7685 PROC41(DESTROY_SESSION, enc_destroy_session, dec_destroy_session), 7686 PROC41(SEQUENCE, enc_sequence, dec_sequence), 7687 PROC(GET_LEASE_TIME, enc_get_lease_time, dec_get_lease_time), 7688 PROC41(RECLAIM_COMPLETE,enc_reclaim_complete, dec_reclaim_complete), 7689 PROC41(GETDEVICEINFO, enc_getdeviceinfo, dec_getdeviceinfo), 7690 PROC41(LAYOUTGET, enc_layoutget, dec_layoutget), 7691 PROC41(LAYOUTCOMMIT, enc_layoutcommit, dec_layoutcommit), 7692 PROC41(LAYOUTRETURN, enc_layoutreturn, dec_layoutreturn), 7693 PROC41(SECINFO_NO_NAME, enc_secinfo_no_name, dec_secinfo_no_name), 7694 PROC41(TEST_STATEID, enc_test_stateid, dec_test_stateid), 7695 PROC41(FREE_STATEID, enc_free_stateid, dec_free_stateid), 7696 STUB(GETDEVICELIST), 7697 PROC41(BIND_CONN_TO_SESSION, 7698 enc_bind_conn_to_session, dec_bind_conn_to_session), 7699 PROC41(DESTROY_CLIENTID,enc_destroy_clientid, dec_destroy_clientid), 7700 PROC42(SEEK, enc_seek, dec_seek), 7701 PROC42(ALLOCATE, enc_allocate, dec_allocate), 7702 PROC42(DEALLOCATE, enc_deallocate, dec_deallocate), 7703 PROC42(LAYOUTSTATS, enc_layoutstats, dec_layoutstats), 7704 PROC42(CLONE, enc_clone, dec_clone), 7705 PROC42(COPY, enc_copy, dec_copy), 7706 PROC42(OFFLOAD_CANCEL, enc_offload_cancel, dec_offload_cancel), 7707 PROC42(COPY_NOTIFY, enc_copy_notify, dec_copy_notify), 7708 PROC(LOOKUPP, enc_lookupp, dec_lookupp), 7709 PROC42(LAYOUTERROR, enc_layouterror, dec_layouterror), 7710 PROC42(GETXATTR, enc_getxattr, dec_getxattr), 7711 PROC42(SETXATTR, enc_setxattr, dec_setxattr), 7712 PROC42(LISTXATTRS, enc_listxattrs, dec_listxattrs), 7713 PROC42(REMOVEXATTR, enc_removexattr, dec_removexattr), 7714 PROC42(READ_PLUS, enc_read_plus, dec_read_plus), 7715 }; 7716 7717 static unsigned int nfs_version4_counts[ARRAY_SIZE(nfs4_procedures)]; 7718 const struct rpc_version nfs_version4 = { 7719 .number = 4, 7720 .nrprocs = ARRAY_SIZE(nfs4_procedures), 7721 .procs = nfs4_procedures, 7722 .counts = nfs_version4_counts, 7723 }; 7724