1 /* 2 * fs/nfs/nfs4xdr.c 3 * 4 * Client-side XDR for NFSv4. 5 * 6 * Copyright (c) 2002 The Regents of the University of Michigan. 7 * All rights reserved. 8 * 9 * Kendrick Smith <kmsmith@umich.edu> 10 * Andy Adamson <andros@umich.edu> 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 16 * 1. Redistributions of source code must retain the above copyright 17 * notice, this list of conditions and the following disclaimer. 18 * 2. Redistributions in binary form must reproduce the above copyright 19 * notice, this list of conditions and the following disclaimer in the 20 * documentation and/or other materials provided with the distribution. 21 * 3. Neither the name of the University nor the names of its 22 * contributors may be used to endorse or promote products derived 23 * from this software without specific prior written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED 26 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 27 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 28 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR 32 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 33 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 34 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 35 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 36 */ 37 38 #include <linux/param.h> 39 #include <linux/time.h> 40 #include <linux/mm.h> 41 #include <linux/errno.h> 42 #include <linux/string.h> 43 #include <linux/in.h> 44 #include <linux/pagemap.h> 45 #include <linux/proc_fs.h> 46 #include <linux/kdev_t.h> 47 #include <linux/module.h> 48 #include <linux/utsname.h> 49 #include <linux/sunrpc/clnt.h> 50 #include <linux/sunrpc/msg_prot.h> 51 #include <linux/sunrpc/gss_api.h> 52 #include <linux/nfs.h> 53 #include <linux/nfs4.h> 54 #include <linux/nfs_fs.h> 55 #include <linux/nfs_idmap.h> 56 57 #include "nfs4_fs.h" 58 #include "internal.h" 59 #include "nfs4session.h" 60 #include "pnfs.h" 61 #include "netns.h" 62 63 #define NFSDBG_FACILITY NFSDBG_XDR 64 65 /* Mapping from NFS error code to "errno" error code. */ 66 #define errno_NFSERR_IO EIO 67 68 static int nfs4_stat_to_errno(int); 69 70 /* NFSv4 COMPOUND tags are only wanted for debugging purposes */ 71 #ifdef DEBUG 72 #define NFS4_MAXTAGLEN 20 73 #else 74 #define NFS4_MAXTAGLEN 0 75 #endif 76 77 /* lock,open owner id: 78 * we currently use size 2 (u64) out of (NFS4_OPAQUE_LIMIT >> 2) 79 */ 80 #define open_owner_id_maxsz (1 + 2 + 1 + 1 + 2) 81 #define lock_owner_id_maxsz (1 + 1 + 4) 82 #define decode_lockowner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ)) 83 #define compound_encode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2)) 84 #define compound_decode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2)) 85 #define op_encode_hdr_maxsz (1) 86 #define op_decode_hdr_maxsz (2) 87 #define encode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE)) 88 #define decode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE)) 89 #define encode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE)) 90 #define decode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE)) 91 #define encode_putfh_maxsz (op_encode_hdr_maxsz + 1 + \ 92 (NFS4_FHSIZE >> 2)) 93 #define decode_putfh_maxsz (op_decode_hdr_maxsz) 94 #define encode_putrootfh_maxsz (op_encode_hdr_maxsz) 95 #define decode_putrootfh_maxsz (op_decode_hdr_maxsz) 96 #define encode_getfh_maxsz (op_encode_hdr_maxsz) 97 #define decode_getfh_maxsz (op_decode_hdr_maxsz + 1 + \ 98 ((3+NFS4_FHSIZE) >> 2)) 99 #define nfs4_fattr_bitmap_maxsz 4 100 #define encode_getattr_maxsz (op_encode_hdr_maxsz + nfs4_fattr_bitmap_maxsz) 101 #define nfs4_name_maxsz (1 + ((3 + NFS4_MAXNAMLEN) >> 2)) 102 #define nfs4_path_maxsz (1 + ((3 + NFS4_MAXPATHLEN) >> 2)) 103 #define nfs4_owner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ)) 104 #define nfs4_group_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ)) 105 /* We support only one layout type per file system */ 106 #define decode_mdsthreshold_maxsz (1 + 1 + nfs4_fattr_bitmap_maxsz + 1 + 8) 107 /* This is based on getfattr, which uses the most attributes: */ 108 #define nfs4_fattr_value_maxsz (1 + (1 + 2 + 2 + 4 + 2 + 1 + 1 + 2 + 2 + \ 109 3 + 3 + 3 + nfs4_owner_maxsz + \ 110 nfs4_group_maxsz + decode_mdsthreshold_maxsz)) 111 #define nfs4_fattr_maxsz (nfs4_fattr_bitmap_maxsz + \ 112 nfs4_fattr_value_maxsz) 113 #define decode_getattr_maxsz (op_decode_hdr_maxsz + nfs4_fattr_maxsz) 114 #define encode_attrs_maxsz (nfs4_fattr_bitmap_maxsz + \ 115 1 + 2 + 1 + \ 116 nfs4_owner_maxsz + \ 117 nfs4_group_maxsz + \ 118 4 + 4) 119 #define encode_savefh_maxsz (op_encode_hdr_maxsz) 120 #define decode_savefh_maxsz (op_decode_hdr_maxsz) 121 #define encode_restorefh_maxsz (op_encode_hdr_maxsz) 122 #define decode_restorefh_maxsz (op_decode_hdr_maxsz) 123 #define encode_fsinfo_maxsz (encode_getattr_maxsz) 124 /* The 5 accounts for the PNFS attributes, and assumes that at most three 125 * layout types will be returned. 126 */ 127 #define decode_fsinfo_maxsz (op_decode_hdr_maxsz + \ 128 nfs4_fattr_bitmap_maxsz + 4 + 8 + 5) 129 #define encode_renew_maxsz (op_encode_hdr_maxsz + 3) 130 #define decode_renew_maxsz (op_decode_hdr_maxsz) 131 #define encode_setclientid_maxsz \ 132 (op_encode_hdr_maxsz + \ 133 XDR_QUADLEN(NFS4_VERIFIER_SIZE) + \ 134 XDR_QUADLEN(NFS4_SETCLIENTID_NAMELEN) + \ 135 1 /* sc_prog */ + \ 136 XDR_QUADLEN(RPCBIND_MAXNETIDLEN) + \ 137 XDR_QUADLEN(RPCBIND_MAXUADDRLEN) + \ 138 1) /* sc_cb_ident */ 139 #define decode_setclientid_maxsz \ 140 (op_decode_hdr_maxsz + \ 141 2 + \ 142 1024) /* large value for CLID_INUSE */ 143 #define encode_setclientid_confirm_maxsz \ 144 (op_encode_hdr_maxsz + \ 145 3 + (NFS4_VERIFIER_SIZE >> 2)) 146 #define decode_setclientid_confirm_maxsz \ 147 (op_decode_hdr_maxsz) 148 #define encode_lookup_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz) 149 #define decode_lookup_maxsz (op_decode_hdr_maxsz) 150 #define encode_share_access_maxsz \ 151 (2) 152 #define encode_createmode_maxsz (1 + encode_attrs_maxsz + encode_verifier_maxsz) 153 #define encode_opentype_maxsz (1 + encode_createmode_maxsz) 154 #define encode_claim_null_maxsz (1 + nfs4_name_maxsz) 155 #define encode_open_maxsz (op_encode_hdr_maxsz + \ 156 2 + encode_share_access_maxsz + 2 + \ 157 open_owner_id_maxsz + \ 158 encode_opentype_maxsz + \ 159 encode_claim_null_maxsz) 160 #define decode_ace_maxsz (3 + nfs4_owner_maxsz) 161 #define decode_delegation_maxsz (1 + decode_stateid_maxsz + 1 + \ 162 decode_ace_maxsz) 163 #define decode_change_info_maxsz (5) 164 #define decode_open_maxsz (op_decode_hdr_maxsz + \ 165 decode_stateid_maxsz + \ 166 decode_change_info_maxsz + 1 + \ 167 nfs4_fattr_bitmap_maxsz + \ 168 decode_delegation_maxsz) 169 #define encode_open_confirm_maxsz \ 170 (op_encode_hdr_maxsz + \ 171 encode_stateid_maxsz + 1) 172 #define decode_open_confirm_maxsz \ 173 (op_decode_hdr_maxsz + \ 174 decode_stateid_maxsz) 175 #define encode_open_downgrade_maxsz \ 176 (op_encode_hdr_maxsz + \ 177 encode_stateid_maxsz + 1 + \ 178 encode_share_access_maxsz) 179 #define decode_open_downgrade_maxsz \ 180 (op_decode_hdr_maxsz + \ 181 decode_stateid_maxsz) 182 #define encode_close_maxsz (op_encode_hdr_maxsz + \ 183 1 + encode_stateid_maxsz) 184 #define decode_close_maxsz (op_decode_hdr_maxsz + \ 185 decode_stateid_maxsz) 186 #define encode_setattr_maxsz (op_encode_hdr_maxsz + \ 187 encode_stateid_maxsz + \ 188 encode_attrs_maxsz) 189 #define decode_setattr_maxsz (op_decode_hdr_maxsz + \ 190 nfs4_fattr_bitmap_maxsz) 191 #define encode_read_maxsz (op_encode_hdr_maxsz + \ 192 encode_stateid_maxsz + 3) 193 #define decode_read_maxsz (op_decode_hdr_maxsz + 2) 194 #define encode_readdir_maxsz (op_encode_hdr_maxsz + \ 195 2 + encode_verifier_maxsz + 5) 196 #define decode_readdir_maxsz (op_decode_hdr_maxsz + \ 197 decode_verifier_maxsz) 198 #define encode_readlink_maxsz (op_encode_hdr_maxsz) 199 #define decode_readlink_maxsz (op_decode_hdr_maxsz + 1) 200 #define encode_write_maxsz (op_encode_hdr_maxsz + \ 201 encode_stateid_maxsz + 4) 202 #define decode_write_maxsz (op_decode_hdr_maxsz + \ 203 2 + decode_verifier_maxsz) 204 #define encode_commit_maxsz (op_encode_hdr_maxsz + 3) 205 #define decode_commit_maxsz (op_decode_hdr_maxsz + \ 206 decode_verifier_maxsz) 207 #define encode_remove_maxsz (op_encode_hdr_maxsz + \ 208 nfs4_name_maxsz) 209 #define decode_remove_maxsz (op_decode_hdr_maxsz + \ 210 decode_change_info_maxsz) 211 #define encode_rename_maxsz (op_encode_hdr_maxsz + \ 212 2 * nfs4_name_maxsz) 213 #define decode_rename_maxsz (op_decode_hdr_maxsz + \ 214 decode_change_info_maxsz + \ 215 decode_change_info_maxsz) 216 #define encode_link_maxsz (op_encode_hdr_maxsz + \ 217 nfs4_name_maxsz) 218 #define decode_link_maxsz (op_decode_hdr_maxsz + decode_change_info_maxsz) 219 #define encode_lockowner_maxsz (7) 220 #define encode_lock_maxsz (op_encode_hdr_maxsz + \ 221 7 + \ 222 1 + encode_stateid_maxsz + 1 + \ 223 encode_lockowner_maxsz) 224 #define decode_lock_denied_maxsz \ 225 (8 + decode_lockowner_maxsz) 226 #define decode_lock_maxsz (op_decode_hdr_maxsz + \ 227 decode_lock_denied_maxsz) 228 #define encode_lockt_maxsz (op_encode_hdr_maxsz + 5 + \ 229 encode_lockowner_maxsz) 230 #define decode_lockt_maxsz (op_decode_hdr_maxsz + \ 231 decode_lock_denied_maxsz) 232 #define encode_locku_maxsz (op_encode_hdr_maxsz + 3 + \ 233 encode_stateid_maxsz + \ 234 4) 235 #define decode_locku_maxsz (op_decode_hdr_maxsz + \ 236 decode_stateid_maxsz) 237 #define encode_release_lockowner_maxsz \ 238 (op_encode_hdr_maxsz + \ 239 encode_lockowner_maxsz) 240 #define decode_release_lockowner_maxsz \ 241 (op_decode_hdr_maxsz) 242 #define encode_access_maxsz (op_encode_hdr_maxsz + 1) 243 #define decode_access_maxsz (op_decode_hdr_maxsz + 2) 244 #define encode_symlink_maxsz (op_encode_hdr_maxsz + \ 245 1 + nfs4_name_maxsz + \ 246 1 + \ 247 nfs4_fattr_maxsz) 248 #define decode_symlink_maxsz (op_decode_hdr_maxsz + 8) 249 #define encode_create_maxsz (op_encode_hdr_maxsz + \ 250 1 + 2 + nfs4_name_maxsz + \ 251 encode_attrs_maxsz) 252 #define decode_create_maxsz (op_decode_hdr_maxsz + \ 253 decode_change_info_maxsz + \ 254 nfs4_fattr_bitmap_maxsz) 255 #define encode_statfs_maxsz (encode_getattr_maxsz) 256 #define decode_statfs_maxsz (decode_getattr_maxsz) 257 #define encode_delegreturn_maxsz (op_encode_hdr_maxsz + 4) 258 #define decode_delegreturn_maxsz (op_decode_hdr_maxsz) 259 #define encode_getacl_maxsz (encode_getattr_maxsz) 260 #define decode_getacl_maxsz (op_decode_hdr_maxsz + \ 261 nfs4_fattr_bitmap_maxsz + 1) 262 #define encode_setacl_maxsz (op_encode_hdr_maxsz + \ 263 encode_stateid_maxsz + 3) 264 #define decode_setacl_maxsz (decode_setattr_maxsz) 265 #define encode_fs_locations_maxsz \ 266 (encode_getattr_maxsz) 267 #define decode_fs_locations_maxsz \ 268 (0) 269 #define encode_secinfo_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz) 270 #define decode_secinfo_maxsz (op_decode_hdr_maxsz + 1 + ((NFS_MAX_SECFLAVORS * (16 + GSS_OID_MAX_LEN)) / 4)) 271 272 #if defined(CONFIG_NFS_V4_1) 273 #define NFS4_MAX_MACHINE_NAME_LEN (64) 274 #define IMPL_NAME_LIMIT (sizeof(utsname()->sysname) + sizeof(utsname()->release) + \ 275 sizeof(utsname()->version) + sizeof(utsname()->machine) + 8) 276 277 #define encode_exchange_id_maxsz (op_encode_hdr_maxsz + \ 278 encode_verifier_maxsz + \ 279 1 /* co_ownerid.len */ + \ 280 XDR_QUADLEN(NFS4_EXCHANGE_ID_LEN) + \ 281 1 /* flags */ + \ 282 1 /* spa_how */ + \ 283 0 /* SP4_NONE (for now) */ + \ 284 1 /* implementation id array of size 1 */ + \ 285 1 /* nii_domain */ + \ 286 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \ 287 1 /* nii_name */ + \ 288 XDR_QUADLEN(IMPL_NAME_LIMIT) + \ 289 3 /* nii_date */) 290 #define decode_exchange_id_maxsz (op_decode_hdr_maxsz + \ 291 2 /* eir_clientid */ + \ 292 1 /* eir_sequenceid */ + \ 293 1 /* eir_flags */ + \ 294 1 /* spr_how */ + \ 295 0 /* SP4_NONE (for now) */ + \ 296 2 /* eir_server_owner.so_minor_id */ + \ 297 /* eir_server_owner.so_major_id<> */ \ 298 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \ 299 /* eir_server_scope<> */ \ 300 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \ 301 1 /* eir_server_impl_id array length */ + \ 302 1 /* nii_domain */ + \ 303 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \ 304 1 /* nii_name */ + \ 305 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \ 306 3 /* nii_date */) 307 #define encode_channel_attrs_maxsz (6 + 1 /* ca_rdma_ird.len (0) */) 308 #define decode_channel_attrs_maxsz (6 + \ 309 1 /* ca_rdma_ird.len */ + \ 310 1 /* ca_rdma_ird */) 311 #define encode_create_session_maxsz (op_encode_hdr_maxsz + \ 312 2 /* csa_clientid */ + \ 313 1 /* csa_sequence */ + \ 314 1 /* csa_flags */ + \ 315 encode_channel_attrs_maxsz + \ 316 encode_channel_attrs_maxsz + \ 317 1 /* csa_cb_program */ + \ 318 1 /* csa_sec_parms.len (1) */ + \ 319 1 /* cb_secflavor (AUTH_SYS) */ + \ 320 1 /* stamp */ + \ 321 1 /* machinename.len */ + \ 322 XDR_QUADLEN(NFS4_MAX_MACHINE_NAME_LEN) + \ 323 1 /* uid */ + \ 324 1 /* gid */ + \ 325 1 /* gids.len (0) */) 326 #define decode_create_session_maxsz (op_decode_hdr_maxsz + \ 327 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \ 328 1 /* csr_sequence */ + \ 329 1 /* csr_flags */ + \ 330 decode_channel_attrs_maxsz + \ 331 decode_channel_attrs_maxsz) 332 #define encode_bind_conn_to_session_maxsz (op_encode_hdr_maxsz + \ 333 /* bctsa_sessid */ \ 334 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \ 335 1 /* bctsa_dir */ + \ 336 1 /* bctsa_use_conn_in_rdma_mode */) 337 #define decode_bind_conn_to_session_maxsz (op_decode_hdr_maxsz + \ 338 /* bctsr_sessid */ \ 339 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \ 340 1 /* bctsr_dir */ + \ 341 1 /* bctsr_use_conn_in_rdma_mode */) 342 #define encode_destroy_session_maxsz (op_encode_hdr_maxsz + 4) 343 #define decode_destroy_session_maxsz (op_decode_hdr_maxsz) 344 #define encode_destroy_clientid_maxsz (op_encode_hdr_maxsz + 2) 345 #define decode_destroy_clientid_maxsz (op_decode_hdr_maxsz) 346 #define encode_sequence_maxsz (op_encode_hdr_maxsz + \ 347 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 4) 348 #define decode_sequence_maxsz (op_decode_hdr_maxsz + \ 349 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 5) 350 #define encode_reclaim_complete_maxsz (op_encode_hdr_maxsz + 4) 351 #define decode_reclaim_complete_maxsz (op_decode_hdr_maxsz + 4) 352 #define encode_getdevicelist_maxsz (op_encode_hdr_maxsz + 4 + \ 353 encode_verifier_maxsz) 354 #define decode_getdevicelist_maxsz (op_decode_hdr_maxsz + \ 355 2 /* nfs_cookie4 gdlr_cookie */ + \ 356 decode_verifier_maxsz \ 357 /* verifier4 gdlr_verifier */ + \ 358 1 /* gdlr_deviceid_list count */ + \ 359 XDR_QUADLEN(NFS4_PNFS_GETDEVLIST_MAXNUM * \ 360 NFS4_DEVICEID4_SIZE) \ 361 /* gdlr_deviceid_list */ + \ 362 1 /* bool gdlr_eof */) 363 #define encode_getdeviceinfo_maxsz (op_encode_hdr_maxsz + 4 + \ 364 XDR_QUADLEN(NFS4_DEVICEID4_SIZE)) 365 #define decode_getdeviceinfo_maxsz (op_decode_hdr_maxsz + \ 366 1 /* layout type */ + \ 367 1 /* opaque devaddr4 length */ + \ 368 /* devaddr4 payload is read into page */ \ 369 1 /* notification bitmap length */ + \ 370 1 /* notification bitmap */) 371 #define encode_layoutget_maxsz (op_encode_hdr_maxsz + 10 + \ 372 encode_stateid_maxsz) 373 #define decode_layoutget_maxsz (op_decode_hdr_maxsz + 8 + \ 374 decode_stateid_maxsz + \ 375 XDR_QUADLEN(PNFS_LAYOUT_MAXSIZE)) 376 #define encode_layoutcommit_maxsz (op_encode_hdr_maxsz + \ 377 2 /* offset */ + \ 378 2 /* length */ + \ 379 1 /* reclaim */ + \ 380 encode_stateid_maxsz + \ 381 1 /* new offset (true) */ + \ 382 2 /* last byte written */ + \ 383 1 /* nt_timechanged (false) */ + \ 384 1 /* layoutupdate4 layout type */ + \ 385 1 /* NULL filelayout layoutupdate4 payload */) 386 #define decode_layoutcommit_maxsz (op_decode_hdr_maxsz + 3) 387 #define encode_layoutreturn_maxsz (8 + op_encode_hdr_maxsz + \ 388 encode_stateid_maxsz + \ 389 1 /* FIXME: opaque lrf_body always empty at the moment */) 390 #define decode_layoutreturn_maxsz (op_decode_hdr_maxsz + \ 391 1 + decode_stateid_maxsz) 392 #define encode_secinfo_no_name_maxsz (op_encode_hdr_maxsz + 1) 393 #define decode_secinfo_no_name_maxsz decode_secinfo_maxsz 394 #define encode_test_stateid_maxsz (op_encode_hdr_maxsz + 2 + \ 395 XDR_QUADLEN(NFS4_STATEID_SIZE)) 396 #define decode_test_stateid_maxsz (op_decode_hdr_maxsz + 2 + 1) 397 #define encode_free_stateid_maxsz (op_encode_hdr_maxsz + 1 + \ 398 XDR_QUADLEN(NFS4_STATEID_SIZE)) 399 #define decode_free_stateid_maxsz (op_decode_hdr_maxsz + 1) 400 #else /* CONFIG_NFS_V4_1 */ 401 #define encode_sequence_maxsz 0 402 #define decode_sequence_maxsz 0 403 #endif /* CONFIG_NFS_V4_1 */ 404 405 #define NFS4_enc_compound_sz (1024) /* XXX: large enough? */ 406 #define NFS4_dec_compound_sz (1024) /* XXX: large enough? */ 407 #define NFS4_enc_read_sz (compound_encode_hdr_maxsz + \ 408 encode_sequence_maxsz + \ 409 encode_putfh_maxsz + \ 410 encode_read_maxsz) 411 #define NFS4_dec_read_sz (compound_decode_hdr_maxsz + \ 412 decode_sequence_maxsz + \ 413 decode_putfh_maxsz + \ 414 decode_read_maxsz) 415 #define NFS4_enc_readlink_sz (compound_encode_hdr_maxsz + \ 416 encode_sequence_maxsz + \ 417 encode_putfh_maxsz + \ 418 encode_readlink_maxsz) 419 #define NFS4_dec_readlink_sz (compound_decode_hdr_maxsz + \ 420 decode_sequence_maxsz + \ 421 decode_putfh_maxsz + \ 422 decode_readlink_maxsz) 423 #define NFS4_enc_readdir_sz (compound_encode_hdr_maxsz + \ 424 encode_sequence_maxsz + \ 425 encode_putfh_maxsz + \ 426 encode_readdir_maxsz) 427 #define NFS4_dec_readdir_sz (compound_decode_hdr_maxsz + \ 428 decode_sequence_maxsz + \ 429 decode_putfh_maxsz + \ 430 decode_readdir_maxsz) 431 #define NFS4_enc_write_sz (compound_encode_hdr_maxsz + \ 432 encode_sequence_maxsz + \ 433 encode_putfh_maxsz + \ 434 encode_write_maxsz + \ 435 encode_getattr_maxsz) 436 #define NFS4_dec_write_sz (compound_decode_hdr_maxsz + \ 437 decode_sequence_maxsz + \ 438 decode_putfh_maxsz + \ 439 decode_write_maxsz + \ 440 decode_getattr_maxsz) 441 #define NFS4_enc_commit_sz (compound_encode_hdr_maxsz + \ 442 encode_sequence_maxsz + \ 443 encode_putfh_maxsz + \ 444 encode_commit_maxsz) 445 #define NFS4_dec_commit_sz (compound_decode_hdr_maxsz + \ 446 decode_sequence_maxsz + \ 447 decode_putfh_maxsz + \ 448 decode_commit_maxsz) 449 #define NFS4_enc_open_sz (compound_encode_hdr_maxsz + \ 450 encode_sequence_maxsz + \ 451 encode_putfh_maxsz + \ 452 encode_open_maxsz + \ 453 encode_access_maxsz + \ 454 encode_getfh_maxsz + \ 455 encode_getattr_maxsz) 456 #define NFS4_dec_open_sz (compound_decode_hdr_maxsz + \ 457 decode_sequence_maxsz + \ 458 decode_putfh_maxsz + \ 459 decode_open_maxsz + \ 460 decode_access_maxsz + \ 461 decode_getfh_maxsz + \ 462 decode_getattr_maxsz) 463 #define NFS4_enc_open_confirm_sz \ 464 (compound_encode_hdr_maxsz + \ 465 encode_putfh_maxsz + \ 466 encode_open_confirm_maxsz) 467 #define NFS4_dec_open_confirm_sz \ 468 (compound_decode_hdr_maxsz + \ 469 decode_putfh_maxsz + \ 470 decode_open_confirm_maxsz) 471 #define NFS4_enc_open_noattr_sz (compound_encode_hdr_maxsz + \ 472 encode_sequence_maxsz + \ 473 encode_putfh_maxsz + \ 474 encode_open_maxsz + \ 475 encode_access_maxsz + \ 476 encode_getattr_maxsz) 477 #define NFS4_dec_open_noattr_sz (compound_decode_hdr_maxsz + \ 478 decode_sequence_maxsz + \ 479 decode_putfh_maxsz + \ 480 decode_open_maxsz + \ 481 decode_access_maxsz + \ 482 decode_getattr_maxsz) 483 #define NFS4_enc_open_downgrade_sz \ 484 (compound_encode_hdr_maxsz + \ 485 encode_sequence_maxsz + \ 486 encode_putfh_maxsz + \ 487 encode_open_downgrade_maxsz + \ 488 encode_getattr_maxsz) 489 #define NFS4_dec_open_downgrade_sz \ 490 (compound_decode_hdr_maxsz + \ 491 decode_sequence_maxsz + \ 492 decode_putfh_maxsz + \ 493 decode_open_downgrade_maxsz + \ 494 decode_getattr_maxsz) 495 #define NFS4_enc_close_sz (compound_encode_hdr_maxsz + \ 496 encode_sequence_maxsz + \ 497 encode_putfh_maxsz + \ 498 encode_close_maxsz + \ 499 encode_getattr_maxsz) 500 #define NFS4_dec_close_sz (compound_decode_hdr_maxsz + \ 501 decode_sequence_maxsz + \ 502 decode_putfh_maxsz + \ 503 decode_close_maxsz + \ 504 decode_getattr_maxsz) 505 #define NFS4_enc_setattr_sz (compound_encode_hdr_maxsz + \ 506 encode_sequence_maxsz + \ 507 encode_putfh_maxsz + \ 508 encode_setattr_maxsz + \ 509 encode_getattr_maxsz) 510 #define NFS4_dec_setattr_sz (compound_decode_hdr_maxsz + \ 511 decode_sequence_maxsz + \ 512 decode_putfh_maxsz + \ 513 decode_setattr_maxsz + \ 514 decode_getattr_maxsz) 515 #define NFS4_enc_fsinfo_sz (compound_encode_hdr_maxsz + \ 516 encode_sequence_maxsz + \ 517 encode_putfh_maxsz + \ 518 encode_fsinfo_maxsz) 519 #define NFS4_dec_fsinfo_sz (compound_decode_hdr_maxsz + \ 520 decode_sequence_maxsz + \ 521 decode_putfh_maxsz + \ 522 decode_fsinfo_maxsz) 523 #define NFS4_enc_renew_sz (compound_encode_hdr_maxsz + \ 524 encode_renew_maxsz) 525 #define NFS4_dec_renew_sz (compound_decode_hdr_maxsz + \ 526 decode_renew_maxsz) 527 #define NFS4_enc_setclientid_sz (compound_encode_hdr_maxsz + \ 528 encode_setclientid_maxsz) 529 #define NFS4_dec_setclientid_sz (compound_decode_hdr_maxsz + \ 530 decode_setclientid_maxsz) 531 #define NFS4_enc_setclientid_confirm_sz \ 532 (compound_encode_hdr_maxsz + \ 533 encode_setclientid_confirm_maxsz) 534 #define NFS4_dec_setclientid_confirm_sz \ 535 (compound_decode_hdr_maxsz + \ 536 decode_setclientid_confirm_maxsz) 537 #define NFS4_enc_lock_sz (compound_encode_hdr_maxsz + \ 538 encode_sequence_maxsz + \ 539 encode_putfh_maxsz + \ 540 encode_lock_maxsz) 541 #define NFS4_dec_lock_sz (compound_decode_hdr_maxsz + \ 542 decode_sequence_maxsz + \ 543 decode_putfh_maxsz + \ 544 decode_lock_maxsz) 545 #define NFS4_enc_lockt_sz (compound_encode_hdr_maxsz + \ 546 encode_sequence_maxsz + \ 547 encode_putfh_maxsz + \ 548 encode_lockt_maxsz) 549 #define NFS4_dec_lockt_sz (compound_decode_hdr_maxsz + \ 550 decode_sequence_maxsz + \ 551 decode_putfh_maxsz + \ 552 decode_lockt_maxsz) 553 #define NFS4_enc_locku_sz (compound_encode_hdr_maxsz + \ 554 encode_sequence_maxsz + \ 555 encode_putfh_maxsz + \ 556 encode_locku_maxsz) 557 #define NFS4_dec_locku_sz (compound_decode_hdr_maxsz + \ 558 decode_sequence_maxsz + \ 559 decode_putfh_maxsz + \ 560 decode_locku_maxsz) 561 #define NFS4_enc_release_lockowner_sz \ 562 (compound_encode_hdr_maxsz + \ 563 encode_lockowner_maxsz) 564 #define NFS4_dec_release_lockowner_sz \ 565 (compound_decode_hdr_maxsz + \ 566 decode_lockowner_maxsz) 567 #define NFS4_enc_access_sz (compound_encode_hdr_maxsz + \ 568 encode_sequence_maxsz + \ 569 encode_putfh_maxsz + \ 570 encode_access_maxsz + \ 571 encode_getattr_maxsz) 572 #define NFS4_dec_access_sz (compound_decode_hdr_maxsz + \ 573 decode_sequence_maxsz + \ 574 decode_putfh_maxsz + \ 575 decode_access_maxsz + \ 576 decode_getattr_maxsz) 577 #define NFS4_enc_getattr_sz (compound_encode_hdr_maxsz + \ 578 encode_sequence_maxsz + \ 579 encode_putfh_maxsz + \ 580 encode_getattr_maxsz) 581 #define NFS4_dec_getattr_sz (compound_decode_hdr_maxsz + \ 582 decode_sequence_maxsz + \ 583 decode_putfh_maxsz + \ 584 decode_getattr_maxsz) 585 #define NFS4_enc_lookup_sz (compound_encode_hdr_maxsz + \ 586 encode_sequence_maxsz + \ 587 encode_putfh_maxsz + \ 588 encode_lookup_maxsz + \ 589 encode_getattr_maxsz + \ 590 encode_getfh_maxsz) 591 #define NFS4_dec_lookup_sz (compound_decode_hdr_maxsz + \ 592 decode_sequence_maxsz + \ 593 decode_putfh_maxsz + \ 594 decode_lookup_maxsz + \ 595 decode_getattr_maxsz + \ 596 decode_getfh_maxsz) 597 #define NFS4_enc_lookup_root_sz (compound_encode_hdr_maxsz + \ 598 encode_sequence_maxsz + \ 599 encode_putrootfh_maxsz + \ 600 encode_getattr_maxsz + \ 601 encode_getfh_maxsz) 602 #define NFS4_dec_lookup_root_sz (compound_decode_hdr_maxsz + \ 603 decode_sequence_maxsz + \ 604 decode_putrootfh_maxsz + \ 605 decode_getattr_maxsz + \ 606 decode_getfh_maxsz) 607 #define NFS4_enc_remove_sz (compound_encode_hdr_maxsz + \ 608 encode_sequence_maxsz + \ 609 encode_putfh_maxsz + \ 610 encode_remove_maxsz) 611 #define NFS4_dec_remove_sz (compound_decode_hdr_maxsz + \ 612 decode_sequence_maxsz + \ 613 decode_putfh_maxsz + \ 614 decode_remove_maxsz) 615 #define NFS4_enc_rename_sz (compound_encode_hdr_maxsz + \ 616 encode_sequence_maxsz + \ 617 encode_putfh_maxsz + \ 618 encode_savefh_maxsz + \ 619 encode_putfh_maxsz + \ 620 encode_rename_maxsz) 621 #define NFS4_dec_rename_sz (compound_decode_hdr_maxsz + \ 622 decode_sequence_maxsz + \ 623 decode_putfh_maxsz + \ 624 decode_savefh_maxsz + \ 625 decode_putfh_maxsz + \ 626 decode_rename_maxsz) 627 #define NFS4_enc_link_sz (compound_encode_hdr_maxsz + \ 628 encode_sequence_maxsz + \ 629 encode_putfh_maxsz + \ 630 encode_savefh_maxsz + \ 631 encode_putfh_maxsz + \ 632 encode_link_maxsz + \ 633 encode_restorefh_maxsz + \ 634 encode_getattr_maxsz) 635 #define NFS4_dec_link_sz (compound_decode_hdr_maxsz + \ 636 decode_sequence_maxsz + \ 637 decode_putfh_maxsz + \ 638 decode_savefh_maxsz + \ 639 decode_putfh_maxsz + \ 640 decode_link_maxsz + \ 641 decode_restorefh_maxsz + \ 642 decode_getattr_maxsz) 643 #define NFS4_enc_symlink_sz (compound_encode_hdr_maxsz + \ 644 encode_sequence_maxsz + \ 645 encode_putfh_maxsz + \ 646 encode_symlink_maxsz + \ 647 encode_getattr_maxsz + \ 648 encode_getfh_maxsz) 649 #define NFS4_dec_symlink_sz (compound_decode_hdr_maxsz + \ 650 decode_sequence_maxsz + \ 651 decode_putfh_maxsz + \ 652 decode_symlink_maxsz + \ 653 decode_getattr_maxsz + \ 654 decode_getfh_maxsz) 655 #define NFS4_enc_create_sz (compound_encode_hdr_maxsz + \ 656 encode_sequence_maxsz + \ 657 encode_putfh_maxsz + \ 658 encode_create_maxsz + \ 659 encode_getfh_maxsz + \ 660 encode_getattr_maxsz) 661 #define NFS4_dec_create_sz (compound_decode_hdr_maxsz + \ 662 decode_sequence_maxsz + \ 663 decode_putfh_maxsz + \ 664 decode_create_maxsz + \ 665 decode_getfh_maxsz + \ 666 decode_getattr_maxsz) 667 #define NFS4_enc_pathconf_sz (compound_encode_hdr_maxsz + \ 668 encode_sequence_maxsz + \ 669 encode_putfh_maxsz + \ 670 encode_getattr_maxsz) 671 #define NFS4_dec_pathconf_sz (compound_decode_hdr_maxsz + \ 672 decode_sequence_maxsz + \ 673 decode_putfh_maxsz + \ 674 decode_getattr_maxsz) 675 #define NFS4_enc_statfs_sz (compound_encode_hdr_maxsz + \ 676 encode_sequence_maxsz + \ 677 encode_putfh_maxsz + \ 678 encode_statfs_maxsz) 679 #define NFS4_dec_statfs_sz (compound_decode_hdr_maxsz + \ 680 decode_sequence_maxsz + \ 681 decode_putfh_maxsz + \ 682 decode_statfs_maxsz) 683 #define NFS4_enc_server_caps_sz (compound_encode_hdr_maxsz + \ 684 encode_sequence_maxsz + \ 685 encode_putfh_maxsz + \ 686 encode_getattr_maxsz) 687 #define NFS4_dec_server_caps_sz (compound_decode_hdr_maxsz + \ 688 decode_sequence_maxsz + \ 689 decode_putfh_maxsz + \ 690 decode_getattr_maxsz) 691 #define NFS4_enc_delegreturn_sz (compound_encode_hdr_maxsz + \ 692 encode_sequence_maxsz + \ 693 encode_putfh_maxsz + \ 694 encode_delegreturn_maxsz + \ 695 encode_getattr_maxsz) 696 #define NFS4_dec_delegreturn_sz (compound_decode_hdr_maxsz + \ 697 decode_sequence_maxsz + \ 698 decode_delegreturn_maxsz + \ 699 decode_getattr_maxsz) 700 #define NFS4_enc_getacl_sz (compound_encode_hdr_maxsz + \ 701 encode_sequence_maxsz + \ 702 encode_putfh_maxsz + \ 703 encode_getacl_maxsz) 704 #define NFS4_dec_getacl_sz (compound_decode_hdr_maxsz + \ 705 decode_sequence_maxsz + \ 706 decode_putfh_maxsz + \ 707 decode_getacl_maxsz) 708 #define NFS4_enc_setacl_sz (compound_encode_hdr_maxsz + \ 709 encode_sequence_maxsz + \ 710 encode_putfh_maxsz + \ 711 encode_setacl_maxsz) 712 #define NFS4_dec_setacl_sz (compound_decode_hdr_maxsz + \ 713 decode_sequence_maxsz + \ 714 decode_putfh_maxsz + \ 715 decode_setacl_maxsz) 716 #define NFS4_enc_fs_locations_sz \ 717 (compound_encode_hdr_maxsz + \ 718 encode_sequence_maxsz + \ 719 encode_putfh_maxsz + \ 720 encode_lookup_maxsz + \ 721 encode_fs_locations_maxsz) 722 #define NFS4_dec_fs_locations_sz \ 723 (compound_decode_hdr_maxsz + \ 724 decode_sequence_maxsz + \ 725 decode_putfh_maxsz + \ 726 decode_lookup_maxsz + \ 727 decode_fs_locations_maxsz) 728 #define NFS4_enc_secinfo_sz (compound_encode_hdr_maxsz + \ 729 encode_sequence_maxsz + \ 730 encode_putfh_maxsz + \ 731 encode_secinfo_maxsz) 732 #define NFS4_dec_secinfo_sz (compound_decode_hdr_maxsz + \ 733 decode_sequence_maxsz + \ 734 decode_putfh_maxsz + \ 735 decode_secinfo_maxsz) 736 #if defined(CONFIG_NFS_V4_1) 737 #define NFS4_enc_bind_conn_to_session_sz \ 738 (compound_encode_hdr_maxsz + \ 739 encode_bind_conn_to_session_maxsz) 740 #define NFS4_dec_bind_conn_to_session_sz \ 741 (compound_decode_hdr_maxsz + \ 742 decode_bind_conn_to_session_maxsz) 743 #define NFS4_enc_exchange_id_sz \ 744 (compound_encode_hdr_maxsz + \ 745 encode_exchange_id_maxsz) 746 #define NFS4_dec_exchange_id_sz \ 747 (compound_decode_hdr_maxsz + \ 748 decode_exchange_id_maxsz) 749 #define NFS4_enc_create_session_sz \ 750 (compound_encode_hdr_maxsz + \ 751 encode_create_session_maxsz) 752 #define NFS4_dec_create_session_sz \ 753 (compound_decode_hdr_maxsz + \ 754 decode_create_session_maxsz) 755 #define NFS4_enc_destroy_session_sz (compound_encode_hdr_maxsz + \ 756 encode_destroy_session_maxsz) 757 #define NFS4_dec_destroy_session_sz (compound_decode_hdr_maxsz + \ 758 decode_destroy_session_maxsz) 759 #define NFS4_enc_destroy_clientid_sz (compound_encode_hdr_maxsz + \ 760 encode_destroy_clientid_maxsz) 761 #define NFS4_dec_destroy_clientid_sz (compound_decode_hdr_maxsz + \ 762 decode_destroy_clientid_maxsz) 763 #define NFS4_enc_sequence_sz \ 764 (compound_decode_hdr_maxsz + \ 765 encode_sequence_maxsz) 766 #define NFS4_dec_sequence_sz \ 767 (compound_decode_hdr_maxsz + \ 768 decode_sequence_maxsz) 769 #define NFS4_enc_get_lease_time_sz (compound_encode_hdr_maxsz + \ 770 encode_sequence_maxsz + \ 771 encode_putrootfh_maxsz + \ 772 encode_fsinfo_maxsz) 773 #define NFS4_dec_get_lease_time_sz (compound_decode_hdr_maxsz + \ 774 decode_sequence_maxsz + \ 775 decode_putrootfh_maxsz + \ 776 decode_fsinfo_maxsz) 777 #define NFS4_enc_reclaim_complete_sz (compound_encode_hdr_maxsz + \ 778 encode_sequence_maxsz + \ 779 encode_reclaim_complete_maxsz) 780 #define NFS4_dec_reclaim_complete_sz (compound_decode_hdr_maxsz + \ 781 decode_sequence_maxsz + \ 782 decode_reclaim_complete_maxsz) 783 #define NFS4_enc_getdevicelist_sz (compound_encode_hdr_maxsz + \ 784 encode_sequence_maxsz + \ 785 encode_putfh_maxsz + \ 786 encode_getdevicelist_maxsz) 787 #define NFS4_dec_getdevicelist_sz (compound_decode_hdr_maxsz + \ 788 decode_sequence_maxsz + \ 789 decode_putfh_maxsz + \ 790 decode_getdevicelist_maxsz) 791 #define NFS4_enc_getdeviceinfo_sz (compound_encode_hdr_maxsz + \ 792 encode_sequence_maxsz +\ 793 encode_getdeviceinfo_maxsz) 794 #define NFS4_dec_getdeviceinfo_sz (compound_decode_hdr_maxsz + \ 795 decode_sequence_maxsz + \ 796 decode_getdeviceinfo_maxsz) 797 #define NFS4_enc_layoutget_sz (compound_encode_hdr_maxsz + \ 798 encode_sequence_maxsz + \ 799 encode_putfh_maxsz + \ 800 encode_layoutget_maxsz) 801 #define NFS4_dec_layoutget_sz (compound_decode_hdr_maxsz + \ 802 decode_sequence_maxsz + \ 803 decode_putfh_maxsz + \ 804 decode_layoutget_maxsz) 805 #define NFS4_enc_layoutcommit_sz (compound_encode_hdr_maxsz + \ 806 encode_sequence_maxsz +\ 807 encode_putfh_maxsz + \ 808 encode_layoutcommit_maxsz + \ 809 encode_getattr_maxsz) 810 #define NFS4_dec_layoutcommit_sz (compound_decode_hdr_maxsz + \ 811 decode_sequence_maxsz + \ 812 decode_putfh_maxsz + \ 813 decode_layoutcommit_maxsz + \ 814 decode_getattr_maxsz) 815 #define NFS4_enc_layoutreturn_sz (compound_encode_hdr_maxsz + \ 816 encode_sequence_maxsz + \ 817 encode_putfh_maxsz + \ 818 encode_layoutreturn_maxsz) 819 #define NFS4_dec_layoutreturn_sz (compound_decode_hdr_maxsz + \ 820 decode_sequence_maxsz + \ 821 decode_putfh_maxsz + \ 822 decode_layoutreturn_maxsz) 823 #define NFS4_enc_secinfo_no_name_sz (compound_encode_hdr_maxsz + \ 824 encode_sequence_maxsz + \ 825 encode_putrootfh_maxsz +\ 826 encode_secinfo_no_name_maxsz) 827 #define NFS4_dec_secinfo_no_name_sz (compound_decode_hdr_maxsz + \ 828 decode_sequence_maxsz + \ 829 decode_putrootfh_maxsz + \ 830 decode_secinfo_no_name_maxsz) 831 #define NFS4_enc_test_stateid_sz (compound_encode_hdr_maxsz + \ 832 encode_sequence_maxsz + \ 833 encode_test_stateid_maxsz) 834 #define NFS4_dec_test_stateid_sz (compound_decode_hdr_maxsz + \ 835 decode_sequence_maxsz + \ 836 decode_test_stateid_maxsz) 837 #define NFS4_enc_free_stateid_sz (compound_encode_hdr_maxsz + \ 838 encode_sequence_maxsz + \ 839 encode_free_stateid_maxsz) 840 #define NFS4_dec_free_stateid_sz (compound_decode_hdr_maxsz + \ 841 decode_sequence_maxsz + \ 842 decode_free_stateid_maxsz) 843 844 const u32 nfs41_maxwrite_overhead = ((RPC_MAX_HEADER_WITH_AUTH + 845 compound_encode_hdr_maxsz + 846 encode_sequence_maxsz + 847 encode_putfh_maxsz + 848 encode_getattr_maxsz) * 849 XDR_UNIT); 850 851 const u32 nfs41_maxread_overhead = ((RPC_MAX_HEADER_WITH_AUTH + 852 compound_decode_hdr_maxsz + 853 decode_sequence_maxsz + 854 decode_putfh_maxsz) * 855 XDR_UNIT); 856 #endif /* CONFIG_NFS_V4_1 */ 857 858 static const umode_t nfs_type2fmt[] = { 859 [NF4BAD] = 0, 860 [NF4REG] = S_IFREG, 861 [NF4DIR] = S_IFDIR, 862 [NF4BLK] = S_IFBLK, 863 [NF4CHR] = S_IFCHR, 864 [NF4LNK] = S_IFLNK, 865 [NF4SOCK] = S_IFSOCK, 866 [NF4FIFO] = S_IFIFO, 867 [NF4ATTRDIR] = 0, 868 [NF4NAMEDATTR] = 0, 869 }; 870 871 struct compound_hdr { 872 int32_t status; 873 uint32_t nops; 874 __be32 * nops_p; 875 uint32_t taglen; 876 char * tag; 877 uint32_t replen; /* expected reply words */ 878 u32 minorversion; 879 }; 880 881 static __be32 *reserve_space(struct xdr_stream *xdr, size_t nbytes) 882 { 883 __be32 *p = xdr_reserve_space(xdr, nbytes); 884 BUG_ON(!p); 885 return p; 886 } 887 888 static void encode_opaque_fixed(struct xdr_stream *xdr, const void *buf, size_t len) 889 { 890 __be32 *p; 891 892 p = xdr_reserve_space(xdr, len); 893 xdr_encode_opaque_fixed(p, buf, len); 894 } 895 896 static void encode_string(struct xdr_stream *xdr, unsigned int len, const char *str) 897 { 898 __be32 *p; 899 900 p = reserve_space(xdr, 4 + len); 901 xdr_encode_opaque(p, str, len); 902 } 903 904 static void encode_uint32(struct xdr_stream *xdr, u32 n) 905 { 906 __be32 *p; 907 908 p = reserve_space(xdr, 4); 909 *p = cpu_to_be32(n); 910 } 911 912 static void encode_uint64(struct xdr_stream *xdr, u64 n) 913 { 914 __be32 *p; 915 916 p = reserve_space(xdr, 8); 917 xdr_encode_hyper(p, n); 918 } 919 920 static void encode_nfs4_seqid(struct xdr_stream *xdr, 921 const struct nfs_seqid *seqid) 922 { 923 encode_uint32(xdr, seqid->sequence->counter); 924 } 925 926 static void encode_compound_hdr(struct xdr_stream *xdr, 927 struct rpc_rqst *req, 928 struct compound_hdr *hdr) 929 { 930 __be32 *p; 931 struct rpc_auth *auth = req->rq_cred->cr_auth; 932 933 /* initialize running count of expected bytes in reply. 934 * NOTE: the replied tag SHOULD be the same is the one sent, 935 * but this is not required as a MUST for the server to do so. */ 936 hdr->replen = RPC_REPHDRSIZE + auth->au_rslack + 3 + hdr->taglen; 937 938 WARN_ON_ONCE(hdr->taglen > NFS4_MAXTAGLEN); 939 encode_string(xdr, hdr->taglen, hdr->tag); 940 p = reserve_space(xdr, 8); 941 *p++ = cpu_to_be32(hdr->minorversion); 942 hdr->nops_p = p; 943 *p = cpu_to_be32(hdr->nops); 944 } 945 946 static void encode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 op, 947 uint32_t replen, 948 struct compound_hdr *hdr) 949 { 950 encode_uint32(xdr, op); 951 hdr->nops++; 952 hdr->replen += replen; 953 } 954 955 static void encode_nops(struct compound_hdr *hdr) 956 { 957 WARN_ON_ONCE(hdr->nops > NFS4_MAX_OPS); 958 *hdr->nops_p = htonl(hdr->nops); 959 } 960 961 static void encode_nfs4_stateid(struct xdr_stream *xdr, const nfs4_stateid *stateid) 962 { 963 encode_opaque_fixed(xdr, stateid, NFS4_STATEID_SIZE); 964 } 965 966 static void encode_nfs4_verifier(struct xdr_stream *xdr, const nfs4_verifier *verf) 967 { 968 encode_opaque_fixed(xdr, verf->data, NFS4_VERIFIER_SIZE); 969 } 970 971 static void encode_attrs(struct xdr_stream *xdr, const struct iattr *iap, const struct nfs_server *server) 972 { 973 char owner_name[IDMAP_NAMESZ]; 974 char owner_group[IDMAP_NAMESZ]; 975 int owner_namelen = 0; 976 int owner_grouplen = 0; 977 __be32 *p; 978 __be32 *q; 979 int len; 980 uint32_t bmval0 = 0; 981 uint32_t bmval1 = 0; 982 983 /* 984 * We reserve enough space to write the entire attribute buffer at once. 985 * In the worst-case, this would be 986 * 12(bitmap) + 4(attrlen) + 8(size) + 4(mode) + 4(atime) + 4(mtime) 987 * = 36 bytes, plus any contribution from variable-length fields 988 * such as owner/group. 989 */ 990 len = 16; 991 992 /* Sigh */ 993 if (iap->ia_valid & ATTR_SIZE) 994 len += 8; 995 if (iap->ia_valid & ATTR_MODE) 996 len += 4; 997 if (iap->ia_valid & ATTR_UID) { 998 owner_namelen = nfs_map_uid_to_name(server, iap->ia_uid, owner_name, IDMAP_NAMESZ); 999 if (owner_namelen < 0) { 1000 dprintk("nfs: couldn't resolve uid %d to string\n", 1001 from_kuid(&init_user_ns, iap->ia_uid)); 1002 /* XXX */ 1003 strcpy(owner_name, "nobody"); 1004 owner_namelen = sizeof("nobody") - 1; 1005 /* goto out; */ 1006 } 1007 len += 4 + (XDR_QUADLEN(owner_namelen) << 2); 1008 } 1009 if (iap->ia_valid & ATTR_GID) { 1010 owner_grouplen = nfs_map_gid_to_group(server, iap->ia_gid, owner_group, IDMAP_NAMESZ); 1011 if (owner_grouplen < 0) { 1012 dprintk("nfs: couldn't resolve gid %d to string\n", 1013 from_kgid(&init_user_ns, iap->ia_gid)); 1014 strcpy(owner_group, "nobody"); 1015 owner_grouplen = sizeof("nobody") - 1; 1016 /* goto out; */ 1017 } 1018 len += 4 + (XDR_QUADLEN(owner_grouplen) << 2); 1019 } 1020 if (iap->ia_valid & ATTR_ATIME_SET) 1021 len += 16; 1022 else if (iap->ia_valid & ATTR_ATIME) 1023 len += 4; 1024 if (iap->ia_valid & ATTR_MTIME_SET) 1025 len += 16; 1026 else if (iap->ia_valid & ATTR_MTIME) 1027 len += 4; 1028 p = reserve_space(xdr, len); 1029 1030 /* 1031 * We write the bitmap length now, but leave the bitmap and the attribute 1032 * buffer length to be backfilled at the end of this routine. 1033 */ 1034 *p++ = cpu_to_be32(2); 1035 q = p; 1036 p += 3; 1037 1038 if (iap->ia_valid & ATTR_SIZE) { 1039 bmval0 |= FATTR4_WORD0_SIZE; 1040 p = xdr_encode_hyper(p, iap->ia_size); 1041 } 1042 if (iap->ia_valid & ATTR_MODE) { 1043 bmval1 |= FATTR4_WORD1_MODE; 1044 *p++ = cpu_to_be32(iap->ia_mode & S_IALLUGO); 1045 } 1046 if (iap->ia_valid & ATTR_UID) { 1047 bmval1 |= FATTR4_WORD1_OWNER; 1048 p = xdr_encode_opaque(p, owner_name, owner_namelen); 1049 } 1050 if (iap->ia_valid & ATTR_GID) { 1051 bmval1 |= FATTR4_WORD1_OWNER_GROUP; 1052 p = xdr_encode_opaque(p, owner_group, owner_grouplen); 1053 } 1054 if (iap->ia_valid & ATTR_ATIME_SET) { 1055 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET; 1056 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME); 1057 p = xdr_encode_hyper(p, (s64)iap->ia_atime.tv_sec); 1058 *p++ = cpu_to_be32(iap->ia_atime.tv_nsec); 1059 } 1060 else if (iap->ia_valid & ATTR_ATIME) { 1061 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET; 1062 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME); 1063 } 1064 if (iap->ia_valid & ATTR_MTIME_SET) { 1065 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET; 1066 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME); 1067 p = xdr_encode_hyper(p, (s64)iap->ia_mtime.tv_sec); 1068 *p++ = cpu_to_be32(iap->ia_mtime.tv_nsec); 1069 } 1070 else if (iap->ia_valid & ATTR_MTIME) { 1071 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET; 1072 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME); 1073 } 1074 1075 /* 1076 * Now we backfill the bitmap and the attribute buffer length. 1077 */ 1078 if (len != ((char *)p - (char *)q) + 4) { 1079 printk(KERN_ERR "NFS: Attr length error, %u != %Zu\n", 1080 len, ((char *)p - (char *)q) + 4); 1081 BUG(); 1082 } 1083 len = (char *)p - (char *)q - 12; 1084 *q++ = htonl(bmval0); 1085 *q++ = htonl(bmval1); 1086 *q = htonl(len); 1087 1088 /* out: */ 1089 } 1090 1091 static void encode_access(struct xdr_stream *xdr, u32 access, struct compound_hdr *hdr) 1092 { 1093 encode_op_hdr(xdr, OP_ACCESS, decode_access_maxsz, hdr); 1094 encode_uint32(xdr, access); 1095 } 1096 1097 static void encode_close(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr) 1098 { 1099 encode_op_hdr(xdr, OP_CLOSE, decode_close_maxsz, hdr); 1100 encode_nfs4_seqid(xdr, arg->seqid); 1101 encode_nfs4_stateid(xdr, arg->stateid); 1102 } 1103 1104 static void encode_commit(struct xdr_stream *xdr, const struct nfs_commitargs *args, struct compound_hdr *hdr) 1105 { 1106 __be32 *p; 1107 1108 encode_op_hdr(xdr, OP_COMMIT, decode_commit_maxsz, hdr); 1109 p = reserve_space(xdr, 12); 1110 p = xdr_encode_hyper(p, args->offset); 1111 *p = cpu_to_be32(args->count); 1112 } 1113 1114 static void encode_create(struct xdr_stream *xdr, const struct nfs4_create_arg *create, struct compound_hdr *hdr) 1115 { 1116 __be32 *p; 1117 1118 encode_op_hdr(xdr, OP_CREATE, decode_create_maxsz, hdr); 1119 encode_uint32(xdr, create->ftype); 1120 1121 switch (create->ftype) { 1122 case NF4LNK: 1123 p = reserve_space(xdr, 4); 1124 *p = cpu_to_be32(create->u.symlink.len); 1125 xdr_write_pages(xdr, create->u.symlink.pages, 0, create->u.symlink.len); 1126 break; 1127 1128 case NF4BLK: case NF4CHR: 1129 p = reserve_space(xdr, 8); 1130 *p++ = cpu_to_be32(create->u.device.specdata1); 1131 *p = cpu_to_be32(create->u.device.specdata2); 1132 break; 1133 1134 default: 1135 break; 1136 } 1137 1138 encode_string(xdr, create->name->len, create->name->name); 1139 encode_attrs(xdr, create->attrs, create->server); 1140 } 1141 1142 static void encode_getattr_one(struct xdr_stream *xdr, uint32_t bitmap, struct compound_hdr *hdr) 1143 { 1144 __be32 *p; 1145 1146 encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr); 1147 p = reserve_space(xdr, 8); 1148 *p++ = cpu_to_be32(1); 1149 *p = cpu_to_be32(bitmap); 1150 } 1151 1152 static void encode_getattr_two(struct xdr_stream *xdr, uint32_t bm0, uint32_t bm1, struct compound_hdr *hdr) 1153 { 1154 __be32 *p; 1155 1156 encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr); 1157 p = reserve_space(xdr, 12); 1158 *p++ = cpu_to_be32(2); 1159 *p++ = cpu_to_be32(bm0); 1160 *p = cpu_to_be32(bm1); 1161 } 1162 1163 static void 1164 encode_getattr_three(struct xdr_stream *xdr, 1165 uint32_t bm0, uint32_t bm1, uint32_t bm2, 1166 struct compound_hdr *hdr) 1167 { 1168 __be32 *p; 1169 1170 encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr); 1171 if (bm2) { 1172 p = reserve_space(xdr, 16); 1173 *p++ = cpu_to_be32(3); 1174 *p++ = cpu_to_be32(bm0); 1175 *p++ = cpu_to_be32(bm1); 1176 *p = cpu_to_be32(bm2); 1177 } else if (bm1) { 1178 p = reserve_space(xdr, 12); 1179 *p++ = cpu_to_be32(2); 1180 *p++ = cpu_to_be32(bm0); 1181 *p = cpu_to_be32(bm1); 1182 } else { 1183 p = reserve_space(xdr, 8); 1184 *p++ = cpu_to_be32(1); 1185 *p = cpu_to_be32(bm0); 1186 } 1187 } 1188 1189 static void encode_getfattr(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr) 1190 { 1191 encode_getattr_two(xdr, bitmask[0] & nfs4_fattr_bitmap[0], 1192 bitmask[1] & nfs4_fattr_bitmap[1], hdr); 1193 } 1194 1195 static void encode_getfattr_open(struct xdr_stream *xdr, const u32 *bitmask, 1196 const u32 *open_bitmap, 1197 struct compound_hdr *hdr) 1198 { 1199 encode_getattr_three(xdr, 1200 bitmask[0] & open_bitmap[0], 1201 bitmask[1] & open_bitmap[1], 1202 bitmask[2] & open_bitmap[2], 1203 hdr); 1204 } 1205 1206 static void encode_fsinfo(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr) 1207 { 1208 encode_getattr_three(xdr, 1209 bitmask[0] & nfs4_fsinfo_bitmap[0], 1210 bitmask[1] & nfs4_fsinfo_bitmap[1], 1211 bitmask[2] & nfs4_fsinfo_bitmap[2], 1212 hdr); 1213 } 1214 1215 static void encode_fs_locations(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr) 1216 { 1217 encode_getattr_two(xdr, bitmask[0] & nfs4_fs_locations_bitmap[0], 1218 bitmask[1] & nfs4_fs_locations_bitmap[1], hdr); 1219 } 1220 1221 static void encode_getfh(struct xdr_stream *xdr, struct compound_hdr *hdr) 1222 { 1223 encode_op_hdr(xdr, OP_GETFH, decode_getfh_maxsz, hdr); 1224 } 1225 1226 static void encode_link(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr) 1227 { 1228 encode_op_hdr(xdr, OP_LINK, decode_link_maxsz, hdr); 1229 encode_string(xdr, name->len, name->name); 1230 } 1231 1232 static inline int nfs4_lock_type(struct file_lock *fl, int block) 1233 { 1234 if (fl->fl_type == F_RDLCK) 1235 return block ? NFS4_READW_LT : NFS4_READ_LT; 1236 return block ? NFS4_WRITEW_LT : NFS4_WRITE_LT; 1237 } 1238 1239 static inline uint64_t nfs4_lock_length(struct file_lock *fl) 1240 { 1241 if (fl->fl_end == OFFSET_MAX) 1242 return ~(uint64_t)0; 1243 return fl->fl_end - fl->fl_start + 1; 1244 } 1245 1246 static void encode_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner) 1247 { 1248 __be32 *p; 1249 1250 p = reserve_space(xdr, 32); 1251 p = xdr_encode_hyper(p, lowner->clientid); 1252 *p++ = cpu_to_be32(20); 1253 p = xdr_encode_opaque_fixed(p, "lock id:", 8); 1254 *p++ = cpu_to_be32(lowner->s_dev); 1255 xdr_encode_hyper(p, lowner->id); 1256 } 1257 1258 /* 1259 * opcode,type,reclaim,offset,length,new_lock_owner = 32 1260 * open_seqid,open_stateid,lock_seqid,lock_owner.clientid, lock_owner.id = 40 1261 */ 1262 static void encode_lock(struct xdr_stream *xdr, const struct nfs_lock_args *args, struct compound_hdr *hdr) 1263 { 1264 __be32 *p; 1265 1266 encode_op_hdr(xdr, OP_LOCK, decode_lock_maxsz, hdr); 1267 p = reserve_space(xdr, 28); 1268 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, args->block)); 1269 *p++ = cpu_to_be32(args->reclaim); 1270 p = xdr_encode_hyper(p, args->fl->fl_start); 1271 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl)); 1272 *p = cpu_to_be32(args->new_lock_owner); 1273 if (args->new_lock_owner){ 1274 encode_nfs4_seqid(xdr, args->open_seqid); 1275 encode_nfs4_stateid(xdr, args->open_stateid); 1276 encode_nfs4_seqid(xdr, args->lock_seqid); 1277 encode_lockowner(xdr, &args->lock_owner); 1278 } 1279 else { 1280 encode_nfs4_stateid(xdr, args->lock_stateid); 1281 encode_nfs4_seqid(xdr, args->lock_seqid); 1282 } 1283 } 1284 1285 static void encode_lockt(struct xdr_stream *xdr, const struct nfs_lockt_args *args, struct compound_hdr *hdr) 1286 { 1287 __be32 *p; 1288 1289 encode_op_hdr(xdr, OP_LOCKT, decode_lockt_maxsz, hdr); 1290 p = reserve_space(xdr, 20); 1291 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, 0)); 1292 p = xdr_encode_hyper(p, args->fl->fl_start); 1293 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl)); 1294 encode_lockowner(xdr, &args->lock_owner); 1295 } 1296 1297 static void encode_locku(struct xdr_stream *xdr, const struct nfs_locku_args *args, struct compound_hdr *hdr) 1298 { 1299 __be32 *p; 1300 1301 encode_op_hdr(xdr, OP_LOCKU, decode_locku_maxsz, hdr); 1302 encode_uint32(xdr, nfs4_lock_type(args->fl, 0)); 1303 encode_nfs4_seqid(xdr, args->seqid); 1304 encode_nfs4_stateid(xdr, args->stateid); 1305 p = reserve_space(xdr, 16); 1306 p = xdr_encode_hyper(p, args->fl->fl_start); 1307 xdr_encode_hyper(p, nfs4_lock_length(args->fl)); 1308 } 1309 1310 static void encode_release_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner, struct compound_hdr *hdr) 1311 { 1312 encode_op_hdr(xdr, OP_RELEASE_LOCKOWNER, decode_release_lockowner_maxsz, hdr); 1313 encode_lockowner(xdr, lowner); 1314 } 1315 1316 static void encode_lookup(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr) 1317 { 1318 encode_op_hdr(xdr, OP_LOOKUP, decode_lookup_maxsz, hdr); 1319 encode_string(xdr, name->len, name->name); 1320 } 1321 1322 static void encode_share_access(struct xdr_stream *xdr, fmode_t fmode) 1323 { 1324 __be32 *p; 1325 1326 p = reserve_space(xdr, 8); 1327 switch (fmode & (FMODE_READ|FMODE_WRITE)) { 1328 case FMODE_READ: 1329 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_READ); 1330 break; 1331 case FMODE_WRITE: 1332 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_WRITE); 1333 break; 1334 case FMODE_READ|FMODE_WRITE: 1335 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_BOTH); 1336 break; 1337 default: 1338 *p++ = cpu_to_be32(0); 1339 } 1340 *p = cpu_to_be32(0); /* for linux, share_deny = 0 always */ 1341 } 1342 1343 static inline void encode_openhdr(struct xdr_stream *xdr, const struct nfs_openargs *arg) 1344 { 1345 __be32 *p; 1346 /* 1347 * opcode 4, seqid 4, share_access 4, share_deny 4, clientid 8, ownerlen 4, 1348 * owner 4 = 32 1349 */ 1350 encode_nfs4_seqid(xdr, arg->seqid); 1351 encode_share_access(xdr, arg->fmode); 1352 p = reserve_space(xdr, 36); 1353 p = xdr_encode_hyper(p, arg->clientid); 1354 *p++ = cpu_to_be32(24); 1355 p = xdr_encode_opaque_fixed(p, "open id:", 8); 1356 *p++ = cpu_to_be32(arg->server->s_dev); 1357 *p++ = cpu_to_be32(arg->id.uniquifier); 1358 xdr_encode_hyper(p, arg->id.create_time); 1359 } 1360 1361 static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_openargs *arg) 1362 { 1363 struct iattr dummy; 1364 __be32 *p; 1365 1366 p = reserve_space(xdr, 4); 1367 switch(arg->createmode) { 1368 case NFS4_CREATE_UNCHECKED: 1369 *p = cpu_to_be32(NFS4_CREATE_UNCHECKED); 1370 encode_attrs(xdr, arg->u.attrs, arg->server); 1371 break; 1372 case NFS4_CREATE_GUARDED: 1373 *p = cpu_to_be32(NFS4_CREATE_GUARDED); 1374 encode_attrs(xdr, arg->u.attrs, arg->server); 1375 break; 1376 case NFS4_CREATE_EXCLUSIVE: 1377 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE); 1378 encode_nfs4_verifier(xdr, &arg->u.verifier); 1379 break; 1380 case NFS4_CREATE_EXCLUSIVE4_1: 1381 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE4_1); 1382 encode_nfs4_verifier(xdr, &arg->u.verifier); 1383 dummy.ia_valid = 0; 1384 encode_attrs(xdr, &dummy, arg->server); 1385 } 1386 } 1387 1388 static void encode_opentype(struct xdr_stream *xdr, const struct nfs_openargs *arg) 1389 { 1390 __be32 *p; 1391 1392 p = reserve_space(xdr, 4); 1393 switch (arg->open_flags & O_CREAT) { 1394 case 0: 1395 *p = cpu_to_be32(NFS4_OPEN_NOCREATE); 1396 break; 1397 default: 1398 *p = cpu_to_be32(NFS4_OPEN_CREATE); 1399 encode_createmode(xdr, arg); 1400 } 1401 } 1402 1403 static inline void encode_delegation_type(struct xdr_stream *xdr, fmode_t delegation_type) 1404 { 1405 __be32 *p; 1406 1407 p = reserve_space(xdr, 4); 1408 switch (delegation_type) { 1409 case 0: 1410 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_NONE); 1411 break; 1412 case FMODE_READ: 1413 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_READ); 1414 break; 1415 case FMODE_WRITE|FMODE_READ: 1416 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_WRITE); 1417 break; 1418 default: 1419 BUG(); 1420 } 1421 } 1422 1423 static inline void encode_claim_null(struct xdr_stream *xdr, const struct qstr *name) 1424 { 1425 __be32 *p; 1426 1427 p = reserve_space(xdr, 4); 1428 *p = cpu_to_be32(NFS4_OPEN_CLAIM_NULL); 1429 encode_string(xdr, name->len, name->name); 1430 } 1431 1432 static inline void encode_claim_previous(struct xdr_stream *xdr, fmode_t type) 1433 { 1434 __be32 *p; 1435 1436 p = reserve_space(xdr, 4); 1437 *p = cpu_to_be32(NFS4_OPEN_CLAIM_PREVIOUS); 1438 encode_delegation_type(xdr, type); 1439 } 1440 1441 static inline void encode_claim_delegate_cur(struct xdr_stream *xdr, const struct qstr *name, const nfs4_stateid *stateid) 1442 { 1443 __be32 *p; 1444 1445 p = reserve_space(xdr, 4); 1446 *p = cpu_to_be32(NFS4_OPEN_CLAIM_DELEGATE_CUR); 1447 encode_nfs4_stateid(xdr, stateid); 1448 encode_string(xdr, name->len, name->name); 1449 } 1450 1451 static inline void encode_claim_fh(struct xdr_stream *xdr) 1452 { 1453 __be32 *p; 1454 1455 p = reserve_space(xdr, 4); 1456 *p = cpu_to_be32(NFS4_OPEN_CLAIM_FH); 1457 } 1458 1459 static inline void encode_claim_delegate_cur_fh(struct xdr_stream *xdr, const nfs4_stateid *stateid) 1460 { 1461 __be32 *p; 1462 1463 p = reserve_space(xdr, 4); 1464 *p = cpu_to_be32(NFS4_OPEN_CLAIM_DELEG_CUR_FH); 1465 encode_nfs4_stateid(xdr, stateid); 1466 } 1467 1468 static void encode_open(struct xdr_stream *xdr, const struct nfs_openargs *arg, struct compound_hdr *hdr) 1469 { 1470 encode_op_hdr(xdr, OP_OPEN, decode_open_maxsz, hdr); 1471 encode_openhdr(xdr, arg); 1472 encode_opentype(xdr, arg); 1473 switch (arg->claim) { 1474 case NFS4_OPEN_CLAIM_NULL: 1475 encode_claim_null(xdr, arg->name); 1476 break; 1477 case NFS4_OPEN_CLAIM_PREVIOUS: 1478 encode_claim_previous(xdr, arg->u.delegation_type); 1479 break; 1480 case NFS4_OPEN_CLAIM_DELEGATE_CUR: 1481 encode_claim_delegate_cur(xdr, arg->name, &arg->u.delegation); 1482 break; 1483 case NFS4_OPEN_CLAIM_FH: 1484 encode_claim_fh(xdr); 1485 break; 1486 case NFS4_OPEN_CLAIM_DELEG_CUR_FH: 1487 encode_claim_delegate_cur_fh(xdr, &arg->u.delegation); 1488 break; 1489 default: 1490 BUG(); 1491 } 1492 } 1493 1494 static void encode_open_confirm(struct xdr_stream *xdr, const struct nfs_open_confirmargs *arg, struct compound_hdr *hdr) 1495 { 1496 encode_op_hdr(xdr, OP_OPEN_CONFIRM, decode_open_confirm_maxsz, hdr); 1497 encode_nfs4_stateid(xdr, arg->stateid); 1498 encode_nfs4_seqid(xdr, arg->seqid); 1499 } 1500 1501 static void encode_open_downgrade(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr) 1502 { 1503 encode_op_hdr(xdr, OP_OPEN_DOWNGRADE, decode_open_downgrade_maxsz, hdr); 1504 encode_nfs4_stateid(xdr, arg->stateid); 1505 encode_nfs4_seqid(xdr, arg->seqid); 1506 encode_share_access(xdr, arg->fmode); 1507 } 1508 1509 static void 1510 encode_putfh(struct xdr_stream *xdr, const struct nfs_fh *fh, struct compound_hdr *hdr) 1511 { 1512 encode_op_hdr(xdr, OP_PUTFH, decode_putfh_maxsz, hdr); 1513 encode_string(xdr, fh->size, fh->data); 1514 } 1515 1516 static void encode_putrootfh(struct xdr_stream *xdr, struct compound_hdr *hdr) 1517 { 1518 encode_op_hdr(xdr, OP_PUTROOTFH, decode_putrootfh_maxsz, hdr); 1519 } 1520 1521 static void encode_read(struct xdr_stream *xdr, const struct nfs_readargs *args, struct compound_hdr *hdr) 1522 { 1523 __be32 *p; 1524 1525 encode_op_hdr(xdr, OP_READ, decode_read_maxsz, hdr); 1526 encode_nfs4_stateid(xdr, &args->stateid); 1527 1528 p = reserve_space(xdr, 12); 1529 p = xdr_encode_hyper(p, args->offset); 1530 *p = cpu_to_be32(args->count); 1531 } 1532 1533 static void encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg *readdir, struct rpc_rqst *req, struct compound_hdr *hdr) 1534 { 1535 uint32_t attrs[2] = { 1536 FATTR4_WORD0_RDATTR_ERROR, 1537 FATTR4_WORD1_MOUNTED_ON_FILEID, 1538 }; 1539 uint32_t dircount = readdir->count >> 1; 1540 __be32 *p, verf[2]; 1541 1542 if (readdir->plus) { 1543 attrs[0] |= FATTR4_WORD0_TYPE|FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE| 1544 FATTR4_WORD0_FSID|FATTR4_WORD0_FILEHANDLE|FATTR4_WORD0_FILEID; 1545 attrs[1] |= FATTR4_WORD1_MODE|FATTR4_WORD1_NUMLINKS|FATTR4_WORD1_OWNER| 1546 FATTR4_WORD1_OWNER_GROUP|FATTR4_WORD1_RAWDEV| 1547 FATTR4_WORD1_SPACE_USED|FATTR4_WORD1_TIME_ACCESS| 1548 FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY; 1549 dircount >>= 1; 1550 } 1551 /* Use mounted_on_fileid only if the server supports it */ 1552 if (!(readdir->bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)) 1553 attrs[0] |= FATTR4_WORD0_FILEID; 1554 1555 encode_op_hdr(xdr, OP_READDIR, decode_readdir_maxsz, hdr); 1556 encode_uint64(xdr, readdir->cookie); 1557 encode_nfs4_verifier(xdr, &readdir->verifier); 1558 p = reserve_space(xdr, 20); 1559 *p++ = cpu_to_be32(dircount); 1560 *p++ = cpu_to_be32(readdir->count); 1561 *p++ = cpu_to_be32(2); 1562 1563 *p++ = cpu_to_be32(attrs[0] & readdir->bitmask[0]); 1564 *p = cpu_to_be32(attrs[1] & readdir->bitmask[1]); 1565 memcpy(verf, readdir->verifier.data, sizeof(verf)); 1566 dprintk("%s: cookie = %Lu, verifier = %08x:%08x, bitmap = %08x:%08x\n", 1567 __func__, 1568 (unsigned long long)readdir->cookie, 1569 verf[0], verf[1], 1570 attrs[0] & readdir->bitmask[0], 1571 attrs[1] & readdir->bitmask[1]); 1572 } 1573 1574 static void encode_readlink(struct xdr_stream *xdr, const struct nfs4_readlink *readlink, struct rpc_rqst *req, struct compound_hdr *hdr) 1575 { 1576 encode_op_hdr(xdr, OP_READLINK, decode_readlink_maxsz, hdr); 1577 } 1578 1579 static void encode_remove(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr) 1580 { 1581 encode_op_hdr(xdr, OP_REMOVE, decode_remove_maxsz, hdr); 1582 encode_string(xdr, name->len, name->name); 1583 } 1584 1585 static void encode_rename(struct xdr_stream *xdr, const struct qstr *oldname, const struct qstr *newname, struct compound_hdr *hdr) 1586 { 1587 encode_op_hdr(xdr, OP_RENAME, decode_rename_maxsz, hdr); 1588 encode_string(xdr, oldname->len, oldname->name); 1589 encode_string(xdr, newname->len, newname->name); 1590 } 1591 1592 static void encode_renew(struct xdr_stream *xdr, clientid4 clid, 1593 struct compound_hdr *hdr) 1594 { 1595 encode_op_hdr(xdr, OP_RENEW, decode_renew_maxsz, hdr); 1596 encode_uint64(xdr, clid); 1597 } 1598 1599 static void 1600 encode_restorefh(struct xdr_stream *xdr, struct compound_hdr *hdr) 1601 { 1602 encode_op_hdr(xdr, OP_RESTOREFH, decode_restorefh_maxsz, hdr); 1603 } 1604 1605 static void 1606 encode_setacl(struct xdr_stream *xdr, struct nfs_setaclargs *arg, struct compound_hdr *hdr) 1607 { 1608 __be32 *p; 1609 1610 encode_op_hdr(xdr, OP_SETATTR, decode_setacl_maxsz, hdr); 1611 encode_nfs4_stateid(xdr, &zero_stateid); 1612 p = reserve_space(xdr, 2*4); 1613 *p++ = cpu_to_be32(1); 1614 *p = cpu_to_be32(FATTR4_WORD0_ACL); 1615 p = reserve_space(xdr, 4); 1616 *p = cpu_to_be32(arg->acl_len); 1617 xdr_write_pages(xdr, arg->acl_pages, arg->acl_pgbase, arg->acl_len); 1618 } 1619 1620 static void 1621 encode_savefh(struct xdr_stream *xdr, struct compound_hdr *hdr) 1622 { 1623 encode_op_hdr(xdr, OP_SAVEFH, decode_savefh_maxsz, hdr); 1624 } 1625 1626 static void encode_setattr(struct xdr_stream *xdr, const struct nfs_setattrargs *arg, const struct nfs_server *server, struct compound_hdr *hdr) 1627 { 1628 encode_op_hdr(xdr, OP_SETATTR, decode_setattr_maxsz, hdr); 1629 encode_nfs4_stateid(xdr, &arg->stateid); 1630 encode_attrs(xdr, arg->iap, server); 1631 } 1632 1633 static void encode_setclientid(struct xdr_stream *xdr, const struct nfs4_setclientid *setclientid, struct compound_hdr *hdr) 1634 { 1635 __be32 *p; 1636 1637 encode_op_hdr(xdr, OP_SETCLIENTID, decode_setclientid_maxsz, hdr); 1638 encode_nfs4_verifier(xdr, setclientid->sc_verifier); 1639 1640 encode_string(xdr, setclientid->sc_name_len, setclientid->sc_name); 1641 p = reserve_space(xdr, 4); 1642 *p = cpu_to_be32(setclientid->sc_prog); 1643 encode_string(xdr, setclientid->sc_netid_len, setclientid->sc_netid); 1644 encode_string(xdr, setclientid->sc_uaddr_len, setclientid->sc_uaddr); 1645 p = reserve_space(xdr, 4); 1646 *p = cpu_to_be32(setclientid->sc_cb_ident); 1647 } 1648 1649 static void encode_setclientid_confirm(struct xdr_stream *xdr, const struct nfs4_setclientid_res *arg, struct compound_hdr *hdr) 1650 { 1651 encode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM, 1652 decode_setclientid_confirm_maxsz, hdr); 1653 encode_uint64(xdr, arg->clientid); 1654 encode_nfs4_verifier(xdr, &arg->confirm); 1655 } 1656 1657 static void encode_write(struct xdr_stream *xdr, const struct nfs_writeargs *args, struct compound_hdr *hdr) 1658 { 1659 __be32 *p; 1660 1661 encode_op_hdr(xdr, OP_WRITE, decode_write_maxsz, hdr); 1662 encode_nfs4_stateid(xdr, &args->stateid); 1663 1664 p = reserve_space(xdr, 16); 1665 p = xdr_encode_hyper(p, args->offset); 1666 *p++ = cpu_to_be32(args->stable); 1667 *p = cpu_to_be32(args->count); 1668 1669 xdr_write_pages(xdr, args->pages, args->pgbase, args->count); 1670 } 1671 1672 static void encode_delegreturn(struct xdr_stream *xdr, const nfs4_stateid *stateid, struct compound_hdr *hdr) 1673 { 1674 encode_op_hdr(xdr, OP_DELEGRETURN, decode_delegreturn_maxsz, hdr); 1675 encode_nfs4_stateid(xdr, stateid); 1676 } 1677 1678 static void encode_secinfo(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr) 1679 { 1680 encode_op_hdr(xdr, OP_SECINFO, decode_secinfo_maxsz, hdr); 1681 encode_string(xdr, name->len, name->name); 1682 } 1683 1684 #if defined(CONFIG_NFS_V4_1) 1685 /* NFSv4.1 operations */ 1686 static void encode_bind_conn_to_session(struct xdr_stream *xdr, 1687 struct nfs4_session *session, 1688 struct compound_hdr *hdr) 1689 { 1690 __be32 *p; 1691 1692 encode_op_hdr(xdr, OP_BIND_CONN_TO_SESSION, 1693 decode_bind_conn_to_session_maxsz, hdr); 1694 encode_opaque_fixed(xdr, session->sess_id.data, NFS4_MAX_SESSIONID_LEN); 1695 p = xdr_reserve_space(xdr, 8); 1696 *p++ = cpu_to_be32(NFS4_CDFC4_BACK_OR_BOTH); 1697 *p = 0; /* use_conn_in_rdma_mode = False */ 1698 } 1699 1700 static void encode_exchange_id(struct xdr_stream *xdr, 1701 struct nfs41_exchange_id_args *args, 1702 struct compound_hdr *hdr) 1703 { 1704 __be32 *p; 1705 char impl_name[IMPL_NAME_LIMIT]; 1706 int len = 0; 1707 1708 encode_op_hdr(xdr, OP_EXCHANGE_ID, decode_exchange_id_maxsz, hdr); 1709 encode_nfs4_verifier(xdr, args->verifier); 1710 1711 encode_string(xdr, args->id_len, args->id); 1712 1713 p = reserve_space(xdr, 12); 1714 *p++ = cpu_to_be32(args->flags); 1715 *p++ = cpu_to_be32(0); /* zero length state_protect4_a */ 1716 1717 if (send_implementation_id && 1718 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN) > 1 && 1719 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN) 1720 <= sizeof(impl_name) + 1) 1721 len = snprintf(impl_name, sizeof(impl_name), "%s %s %s %s", 1722 utsname()->sysname, utsname()->release, 1723 utsname()->version, utsname()->machine); 1724 1725 if (len > 0) { 1726 *p = cpu_to_be32(1); /* implementation id array length=1 */ 1727 1728 encode_string(xdr, 1729 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN) - 1, 1730 CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN); 1731 encode_string(xdr, len, impl_name); 1732 /* just send zeros for nii_date - the date is in nii_name */ 1733 p = reserve_space(xdr, 12); 1734 p = xdr_encode_hyper(p, 0); 1735 *p = cpu_to_be32(0); 1736 } else 1737 *p = cpu_to_be32(0); /* implementation id array length=0 */ 1738 } 1739 1740 static void encode_create_session(struct xdr_stream *xdr, 1741 struct nfs41_create_session_args *args, 1742 struct compound_hdr *hdr) 1743 { 1744 __be32 *p; 1745 char machine_name[NFS4_MAX_MACHINE_NAME_LEN]; 1746 uint32_t len; 1747 struct nfs_client *clp = args->client; 1748 struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id); 1749 u32 max_resp_sz_cached; 1750 1751 /* 1752 * Assumes OPEN is the biggest non-idempotent compound. 1753 * 2 is the verifier. 1754 */ 1755 max_resp_sz_cached = (NFS4_dec_open_sz + RPC_REPHDRSIZE + 1756 RPC_MAX_AUTH_SIZE + 2) * XDR_UNIT; 1757 1758 len = scnprintf(machine_name, sizeof(machine_name), "%s", 1759 clp->cl_ipaddr); 1760 1761 encode_op_hdr(xdr, OP_CREATE_SESSION, decode_create_session_maxsz, hdr); 1762 p = reserve_space(xdr, 16 + 2*28 + 20 + len + 12); 1763 p = xdr_encode_hyper(p, clp->cl_clientid); 1764 *p++ = cpu_to_be32(clp->cl_seqid); /*Sequence id */ 1765 *p++ = cpu_to_be32(args->flags); /*flags */ 1766 1767 /* Fore Channel */ 1768 *p++ = cpu_to_be32(0); /* header padding size */ 1769 *p++ = cpu_to_be32(args->fc_attrs.max_rqst_sz); /* max req size */ 1770 *p++ = cpu_to_be32(args->fc_attrs.max_resp_sz); /* max resp size */ 1771 *p++ = cpu_to_be32(max_resp_sz_cached); /* Max resp sz cached */ 1772 *p++ = cpu_to_be32(args->fc_attrs.max_ops); /* max operations */ 1773 *p++ = cpu_to_be32(args->fc_attrs.max_reqs); /* max requests */ 1774 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */ 1775 1776 /* Back Channel */ 1777 *p++ = cpu_to_be32(0); /* header padding size */ 1778 *p++ = cpu_to_be32(args->bc_attrs.max_rqst_sz); /* max req size */ 1779 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz); /* max resp size */ 1780 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz_cached); /* Max resp sz cached */ 1781 *p++ = cpu_to_be32(args->bc_attrs.max_ops); /* max operations */ 1782 *p++ = cpu_to_be32(args->bc_attrs.max_reqs); /* max requests */ 1783 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */ 1784 1785 *p++ = cpu_to_be32(args->cb_program); /* cb_program */ 1786 *p++ = cpu_to_be32(1); 1787 *p++ = cpu_to_be32(RPC_AUTH_UNIX); /* auth_sys */ 1788 1789 /* authsys_parms rfc1831 */ 1790 *p++ = (__be32)nn->boot_time.tv_nsec; /* stamp */ 1791 p = xdr_encode_opaque(p, machine_name, len); 1792 *p++ = cpu_to_be32(0); /* UID */ 1793 *p++ = cpu_to_be32(0); /* GID */ 1794 *p = cpu_to_be32(0); /* No more gids */ 1795 } 1796 1797 static void encode_destroy_session(struct xdr_stream *xdr, 1798 struct nfs4_session *session, 1799 struct compound_hdr *hdr) 1800 { 1801 encode_op_hdr(xdr, OP_DESTROY_SESSION, decode_destroy_session_maxsz, hdr); 1802 encode_opaque_fixed(xdr, session->sess_id.data, NFS4_MAX_SESSIONID_LEN); 1803 } 1804 1805 static void encode_destroy_clientid(struct xdr_stream *xdr, 1806 uint64_t clientid, 1807 struct compound_hdr *hdr) 1808 { 1809 encode_op_hdr(xdr, OP_DESTROY_CLIENTID, decode_destroy_clientid_maxsz, hdr); 1810 encode_uint64(xdr, clientid); 1811 } 1812 1813 static void encode_reclaim_complete(struct xdr_stream *xdr, 1814 struct nfs41_reclaim_complete_args *args, 1815 struct compound_hdr *hdr) 1816 { 1817 encode_op_hdr(xdr, OP_RECLAIM_COMPLETE, decode_reclaim_complete_maxsz, hdr); 1818 encode_uint32(xdr, args->one_fs); 1819 } 1820 #endif /* CONFIG_NFS_V4_1 */ 1821 1822 static void encode_sequence(struct xdr_stream *xdr, 1823 const struct nfs4_sequence_args *args, 1824 struct compound_hdr *hdr) 1825 { 1826 #if defined(CONFIG_NFS_V4_1) 1827 struct nfs4_session *session; 1828 struct nfs4_slot_table *tp; 1829 struct nfs4_slot *slot = args->sa_slot; 1830 __be32 *p; 1831 1832 if (slot == NULL) 1833 return; 1834 1835 tp = slot->table; 1836 session = tp->session; 1837 1838 encode_op_hdr(xdr, OP_SEQUENCE, decode_sequence_maxsz, hdr); 1839 1840 /* 1841 * Sessionid + seqid + slotid + max slotid + cache_this 1842 */ 1843 dprintk("%s: sessionid=%u:%u:%u:%u seqid=%d slotid=%d " 1844 "max_slotid=%d cache_this=%d\n", 1845 __func__, 1846 ((u32 *)session->sess_id.data)[0], 1847 ((u32 *)session->sess_id.data)[1], 1848 ((u32 *)session->sess_id.data)[2], 1849 ((u32 *)session->sess_id.data)[3], 1850 slot->seq_nr, slot->slot_nr, 1851 tp->highest_used_slotid, args->sa_cache_this); 1852 p = reserve_space(xdr, NFS4_MAX_SESSIONID_LEN + 16); 1853 p = xdr_encode_opaque_fixed(p, session->sess_id.data, NFS4_MAX_SESSIONID_LEN); 1854 *p++ = cpu_to_be32(slot->seq_nr); 1855 *p++ = cpu_to_be32(slot->slot_nr); 1856 *p++ = cpu_to_be32(tp->highest_used_slotid); 1857 *p = cpu_to_be32(args->sa_cache_this); 1858 #endif /* CONFIG_NFS_V4_1 */ 1859 } 1860 1861 #ifdef CONFIG_NFS_V4_1 1862 static void 1863 encode_getdevicelist(struct xdr_stream *xdr, 1864 const struct nfs4_getdevicelist_args *args, 1865 struct compound_hdr *hdr) 1866 { 1867 __be32 *p; 1868 nfs4_verifier dummy = { 1869 .data = "dummmmmy", 1870 }; 1871 1872 encode_op_hdr(xdr, OP_GETDEVICELIST, decode_getdevicelist_maxsz, hdr); 1873 p = reserve_space(xdr, 16); 1874 *p++ = cpu_to_be32(args->layoutclass); 1875 *p++ = cpu_to_be32(NFS4_PNFS_GETDEVLIST_MAXNUM); 1876 xdr_encode_hyper(p, 0ULL); /* cookie */ 1877 encode_nfs4_verifier(xdr, &dummy); 1878 } 1879 1880 static void 1881 encode_getdeviceinfo(struct xdr_stream *xdr, 1882 const struct nfs4_getdeviceinfo_args *args, 1883 struct compound_hdr *hdr) 1884 { 1885 __be32 *p; 1886 1887 encode_op_hdr(xdr, OP_GETDEVICEINFO, decode_getdeviceinfo_maxsz, hdr); 1888 p = reserve_space(xdr, 12 + NFS4_DEVICEID4_SIZE); 1889 p = xdr_encode_opaque_fixed(p, args->pdev->dev_id.data, 1890 NFS4_DEVICEID4_SIZE); 1891 *p++ = cpu_to_be32(args->pdev->layout_type); 1892 *p++ = cpu_to_be32(args->pdev->pglen); /* gdia_maxcount */ 1893 *p++ = cpu_to_be32(0); /* bitmap length 0 */ 1894 } 1895 1896 static void 1897 encode_layoutget(struct xdr_stream *xdr, 1898 const struct nfs4_layoutget_args *args, 1899 struct compound_hdr *hdr) 1900 { 1901 __be32 *p; 1902 1903 encode_op_hdr(xdr, OP_LAYOUTGET, decode_layoutget_maxsz, hdr); 1904 p = reserve_space(xdr, 36); 1905 *p++ = cpu_to_be32(0); /* Signal layout available */ 1906 *p++ = cpu_to_be32(args->type); 1907 *p++ = cpu_to_be32(args->range.iomode); 1908 p = xdr_encode_hyper(p, args->range.offset); 1909 p = xdr_encode_hyper(p, args->range.length); 1910 p = xdr_encode_hyper(p, args->minlength); 1911 encode_nfs4_stateid(xdr, &args->stateid); 1912 encode_uint32(xdr, args->maxcount); 1913 1914 dprintk("%s: 1st type:0x%x iomode:%d off:%lu len:%lu mc:%d\n", 1915 __func__, 1916 args->type, 1917 args->range.iomode, 1918 (unsigned long)args->range.offset, 1919 (unsigned long)args->range.length, 1920 args->maxcount); 1921 } 1922 1923 static int 1924 encode_layoutcommit(struct xdr_stream *xdr, 1925 struct inode *inode, 1926 const struct nfs4_layoutcommit_args *args, 1927 struct compound_hdr *hdr) 1928 { 1929 __be32 *p; 1930 1931 dprintk("%s: lbw: %llu type: %d\n", __func__, args->lastbytewritten, 1932 NFS_SERVER(args->inode)->pnfs_curr_ld->id); 1933 1934 encode_op_hdr(xdr, OP_LAYOUTCOMMIT, decode_layoutcommit_maxsz, hdr); 1935 p = reserve_space(xdr, 20); 1936 /* Only whole file layouts */ 1937 p = xdr_encode_hyper(p, 0); /* offset */ 1938 p = xdr_encode_hyper(p, args->lastbytewritten + 1); /* length */ 1939 *p = cpu_to_be32(0); /* reclaim */ 1940 encode_nfs4_stateid(xdr, &args->stateid); 1941 p = reserve_space(xdr, 20); 1942 *p++ = cpu_to_be32(1); /* newoffset = TRUE */ 1943 p = xdr_encode_hyper(p, args->lastbytewritten); 1944 *p++ = cpu_to_be32(0); /* Never send time_modify_changed */ 1945 *p++ = cpu_to_be32(NFS_SERVER(args->inode)->pnfs_curr_ld->id);/* type */ 1946 1947 if (NFS_SERVER(inode)->pnfs_curr_ld->encode_layoutcommit) 1948 NFS_SERVER(inode)->pnfs_curr_ld->encode_layoutcommit( 1949 NFS_I(inode)->layout, xdr, args); 1950 else 1951 encode_uint32(xdr, 0); /* no layout-type payload */ 1952 1953 return 0; 1954 } 1955 1956 static void 1957 encode_layoutreturn(struct xdr_stream *xdr, 1958 const struct nfs4_layoutreturn_args *args, 1959 struct compound_hdr *hdr) 1960 { 1961 __be32 *p; 1962 1963 encode_op_hdr(xdr, OP_LAYOUTRETURN, decode_layoutreturn_maxsz, hdr); 1964 p = reserve_space(xdr, 16); 1965 *p++ = cpu_to_be32(0); /* reclaim. always 0 for now */ 1966 *p++ = cpu_to_be32(args->layout_type); 1967 *p++ = cpu_to_be32(IOMODE_ANY); 1968 *p = cpu_to_be32(RETURN_FILE); 1969 p = reserve_space(xdr, 16); 1970 p = xdr_encode_hyper(p, 0); 1971 p = xdr_encode_hyper(p, NFS4_MAX_UINT64); 1972 spin_lock(&args->inode->i_lock); 1973 encode_nfs4_stateid(xdr, &args->stateid); 1974 spin_unlock(&args->inode->i_lock); 1975 if (NFS_SERVER(args->inode)->pnfs_curr_ld->encode_layoutreturn) { 1976 NFS_SERVER(args->inode)->pnfs_curr_ld->encode_layoutreturn( 1977 NFS_I(args->inode)->layout, xdr, args); 1978 } else 1979 encode_uint32(xdr, 0); 1980 } 1981 1982 static int 1983 encode_secinfo_no_name(struct xdr_stream *xdr, 1984 const struct nfs41_secinfo_no_name_args *args, 1985 struct compound_hdr *hdr) 1986 { 1987 encode_op_hdr(xdr, OP_SECINFO_NO_NAME, decode_secinfo_no_name_maxsz, hdr); 1988 encode_uint32(xdr, args->style); 1989 return 0; 1990 } 1991 1992 static void encode_test_stateid(struct xdr_stream *xdr, 1993 struct nfs41_test_stateid_args *args, 1994 struct compound_hdr *hdr) 1995 { 1996 encode_op_hdr(xdr, OP_TEST_STATEID, decode_test_stateid_maxsz, hdr); 1997 encode_uint32(xdr, 1); 1998 encode_nfs4_stateid(xdr, args->stateid); 1999 } 2000 2001 static void encode_free_stateid(struct xdr_stream *xdr, 2002 struct nfs41_free_stateid_args *args, 2003 struct compound_hdr *hdr) 2004 { 2005 encode_op_hdr(xdr, OP_FREE_STATEID, decode_free_stateid_maxsz, hdr); 2006 encode_nfs4_stateid(xdr, &args->stateid); 2007 } 2008 #endif /* CONFIG_NFS_V4_1 */ 2009 2010 /* 2011 * END OF "GENERIC" ENCODE ROUTINES. 2012 */ 2013 2014 static u32 nfs4_xdr_minorversion(const struct nfs4_sequence_args *args) 2015 { 2016 #if defined(CONFIG_NFS_V4_1) 2017 2018 if (args->sa_slot) 2019 return args->sa_slot->table->session->clp->cl_mvops->minor_version; 2020 #endif /* CONFIG_NFS_V4_1 */ 2021 return 0; 2022 } 2023 2024 /* 2025 * Encode an ACCESS request 2026 */ 2027 static void nfs4_xdr_enc_access(struct rpc_rqst *req, struct xdr_stream *xdr, 2028 const struct nfs4_accessargs *args) 2029 { 2030 struct compound_hdr hdr = { 2031 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2032 }; 2033 2034 encode_compound_hdr(xdr, req, &hdr); 2035 encode_sequence(xdr, &args->seq_args, &hdr); 2036 encode_putfh(xdr, args->fh, &hdr); 2037 encode_access(xdr, args->access, &hdr); 2038 encode_getfattr(xdr, args->bitmask, &hdr); 2039 encode_nops(&hdr); 2040 } 2041 2042 /* 2043 * Encode LOOKUP request 2044 */ 2045 static void nfs4_xdr_enc_lookup(struct rpc_rqst *req, struct xdr_stream *xdr, 2046 const struct nfs4_lookup_arg *args) 2047 { 2048 struct compound_hdr hdr = { 2049 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2050 }; 2051 2052 encode_compound_hdr(xdr, req, &hdr); 2053 encode_sequence(xdr, &args->seq_args, &hdr); 2054 encode_putfh(xdr, args->dir_fh, &hdr); 2055 encode_lookup(xdr, args->name, &hdr); 2056 encode_getfh(xdr, &hdr); 2057 encode_getfattr(xdr, args->bitmask, &hdr); 2058 encode_nops(&hdr); 2059 } 2060 2061 /* 2062 * Encode LOOKUP_ROOT request 2063 */ 2064 static void nfs4_xdr_enc_lookup_root(struct rpc_rqst *req, 2065 struct xdr_stream *xdr, 2066 const struct nfs4_lookup_root_arg *args) 2067 { 2068 struct compound_hdr hdr = { 2069 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2070 }; 2071 2072 encode_compound_hdr(xdr, req, &hdr); 2073 encode_sequence(xdr, &args->seq_args, &hdr); 2074 encode_putrootfh(xdr, &hdr); 2075 encode_getfh(xdr, &hdr); 2076 encode_getfattr(xdr, args->bitmask, &hdr); 2077 encode_nops(&hdr); 2078 } 2079 2080 /* 2081 * Encode REMOVE request 2082 */ 2083 static void nfs4_xdr_enc_remove(struct rpc_rqst *req, struct xdr_stream *xdr, 2084 const struct nfs_removeargs *args) 2085 { 2086 struct compound_hdr hdr = { 2087 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2088 }; 2089 2090 encode_compound_hdr(xdr, req, &hdr); 2091 encode_sequence(xdr, &args->seq_args, &hdr); 2092 encode_putfh(xdr, args->fh, &hdr); 2093 encode_remove(xdr, &args->name, &hdr); 2094 encode_nops(&hdr); 2095 } 2096 2097 /* 2098 * Encode RENAME request 2099 */ 2100 static void nfs4_xdr_enc_rename(struct rpc_rqst *req, struct xdr_stream *xdr, 2101 const struct nfs_renameargs *args) 2102 { 2103 struct compound_hdr hdr = { 2104 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2105 }; 2106 2107 encode_compound_hdr(xdr, req, &hdr); 2108 encode_sequence(xdr, &args->seq_args, &hdr); 2109 encode_putfh(xdr, args->old_dir, &hdr); 2110 encode_savefh(xdr, &hdr); 2111 encode_putfh(xdr, args->new_dir, &hdr); 2112 encode_rename(xdr, args->old_name, args->new_name, &hdr); 2113 encode_nops(&hdr); 2114 } 2115 2116 /* 2117 * Encode LINK request 2118 */ 2119 static void nfs4_xdr_enc_link(struct rpc_rqst *req, struct xdr_stream *xdr, 2120 const struct nfs4_link_arg *args) 2121 { 2122 struct compound_hdr hdr = { 2123 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2124 }; 2125 2126 encode_compound_hdr(xdr, req, &hdr); 2127 encode_sequence(xdr, &args->seq_args, &hdr); 2128 encode_putfh(xdr, args->fh, &hdr); 2129 encode_savefh(xdr, &hdr); 2130 encode_putfh(xdr, args->dir_fh, &hdr); 2131 encode_link(xdr, args->name, &hdr); 2132 encode_restorefh(xdr, &hdr); 2133 encode_getfattr(xdr, args->bitmask, &hdr); 2134 encode_nops(&hdr); 2135 } 2136 2137 /* 2138 * Encode CREATE request 2139 */ 2140 static void nfs4_xdr_enc_create(struct rpc_rqst *req, struct xdr_stream *xdr, 2141 const struct nfs4_create_arg *args) 2142 { 2143 struct compound_hdr hdr = { 2144 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2145 }; 2146 2147 encode_compound_hdr(xdr, req, &hdr); 2148 encode_sequence(xdr, &args->seq_args, &hdr); 2149 encode_putfh(xdr, args->dir_fh, &hdr); 2150 encode_create(xdr, args, &hdr); 2151 encode_getfh(xdr, &hdr); 2152 encode_getfattr(xdr, args->bitmask, &hdr); 2153 encode_nops(&hdr); 2154 } 2155 2156 /* 2157 * Encode SYMLINK request 2158 */ 2159 static void nfs4_xdr_enc_symlink(struct rpc_rqst *req, struct xdr_stream *xdr, 2160 const struct nfs4_create_arg *args) 2161 { 2162 nfs4_xdr_enc_create(req, xdr, args); 2163 } 2164 2165 /* 2166 * Encode GETATTR request 2167 */ 2168 static void nfs4_xdr_enc_getattr(struct rpc_rqst *req, struct xdr_stream *xdr, 2169 const struct nfs4_getattr_arg *args) 2170 { 2171 struct compound_hdr hdr = { 2172 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2173 }; 2174 2175 encode_compound_hdr(xdr, req, &hdr); 2176 encode_sequence(xdr, &args->seq_args, &hdr); 2177 encode_putfh(xdr, args->fh, &hdr); 2178 encode_getfattr(xdr, args->bitmask, &hdr); 2179 encode_nops(&hdr); 2180 } 2181 2182 /* 2183 * Encode a CLOSE request 2184 */ 2185 static void nfs4_xdr_enc_close(struct rpc_rqst *req, struct xdr_stream *xdr, 2186 struct nfs_closeargs *args) 2187 { 2188 struct compound_hdr hdr = { 2189 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2190 }; 2191 2192 encode_compound_hdr(xdr, req, &hdr); 2193 encode_sequence(xdr, &args->seq_args, &hdr); 2194 encode_putfh(xdr, args->fh, &hdr); 2195 encode_close(xdr, args, &hdr); 2196 encode_getfattr(xdr, args->bitmask, &hdr); 2197 encode_nops(&hdr); 2198 } 2199 2200 /* 2201 * Encode an OPEN request 2202 */ 2203 static void nfs4_xdr_enc_open(struct rpc_rqst *req, struct xdr_stream *xdr, 2204 struct nfs_openargs *args) 2205 { 2206 struct compound_hdr hdr = { 2207 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2208 }; 2209 2210 encode_compound_hdr(xdr, req, &hdr); 2211 encode_sequence(xdr, &args->seq_args, &hdr); 2212 encode_putfh(xdr, args->fh, &hdr); 2213 encode_open(xdr, args, &hdr); 2214 encode_getfh(xdr, &hdr); 2215 if (args->access) 2216 encode_access(xdr, args->access, &hdr); 2217 encode_getfattr_open(xdr, args->bitmask, args->open_bitmap, &hdr); 2218 encode_nops(&hdr); 2219 } 2220 2221 /* 2222 * Encode an OPEN_CONFIRM request 2223 */ 2224 static void nfs4_xdr_enc_open_confirm(struct rpc_rqst *req, 2225 struct xdr_stream *xdr, 2226 struct nfs_open_confirmargs *args) 2227 { 2228 struct compound_hdr hdr = { 2229 .nops = 0, 2230 }; 2231 2232 encode_compound_hdr(xdr, req, &hdr); 2233 encode_putfh(xdr, args->fh, &hdr); 2234 encode_open_confirm(xdr, args, &hdr); 2235 encode_nops(&hdr); 2236 } 2237 2238 /* 2239 * Encode an OPEN request with no attributes. 2240 */ 2241 static void nfs4_xdr_enc_open_noattr(struct rpc_rqst *req, 2242 struct xdr_stream *xdr, 2243 struct nfs_openargs *args) 2244 { 2245 struct compound_hdr hdr = { 2246 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2247 }; 2248 2249 encode_compound_hdr(xdr, req, &hdr); 2250 encode_sequence(xdr, &args->seq_args, &hdr); 2251 encode_putfh(xdr, args->fh, &hdr); 2252 encode_open(xdr, args, &hdr); 2253 if (args->access) 2254 encode_access(xdr, args->access, &hdr); 2255 encode_getfattr_open(xdr, args->bitmask, args->open_bitmap, &hdr); 2256 encode_nops(&hdr); 2257 } 2258 2259 /* 2260 * Encode an OPEN_DOWNGRADE request 2261 */ 2262 static void nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req, 2263 struct xdr_stream *xdr, 2264 struct nfs_closeargs *args) 2265 { 2266 struct compound_hdr hdr = { 2267 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2268 }; 2269 2270 encode_compound_hdr(xdr, req, &hdr); 2271 encode_sequence(xdr, &args->seq_args, &hdr); 2272 encode_putfh(xdr, args->fh, &hdr); 2273 encode_open_downgrade(xdr, args, &hdr); 2274 encode_getfattr(xdr, args->bitmask, &hdr); 2275 encode_nops(&hdr); 2276 } 2277 2278 /* 2279 * Encode a LOCK request 2280 */ 2281 static void nfs4_xdr_enc_lock(struct rpc_rqst *req, struct xdr_stream *xdr, 2282 struct nfs_lock_args *args) 2283 { 2284 struct compound_hdr hdr = { 2285 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2286 }; 2287 2288 encode_compound_hdr(xdr, req, &hdr); 2289 encode_sequence(xdr, &args->seq_args, &hdr); 2290 encode_putfh(xdr, args->fh, &hdr); 2291 encode_lock(xdr, args, &hdr); 2292 encode_nops(&hdr); 2293 } 2294 2295 /* 2296 * Encode a LOCKT request 2297 */ 2298 static void nfs4_xdr_enc_lockt(struct rpc_rqst *req, struct xdr_stream *xdr, 2299 struct nfs_lockt_args *args) 2300 { 2301 struct compound_hdr hdr = { 2302 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2303 }; 2304 2305 encode_compound_hdr(xdr, req, &hdr); 2306 encode_sequence(xdr, &args->seq_args, &hdr); 2307 encode_putfh(xdr, args->fh, &hdr); 2308 encode_lockt(xdr, args, &hdr); 2309 encode_nops(&hdr); 2310 } 2311 2312 /* 2313 * Encode a LOCKU request 2314 */ 2315 static void nfs4_xdr_enc_locku(struct rpc_rqst *req, struct xdr_stream *xdr, 2316 struct nfs_locku_args *args) 2317 { 2318 struct compound_hdr hdr = { 2319 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2320 }; 2321 2322 encode_compound_hdr(xdr, req, &hdr); 2323 encode_sequence(xdr, &args->seq_args, &hdr); 2324 encode_putfh(xdr, args->fh, &hdr); 2325 encode_locku(xdr, args, &hdr); 2326 encode_nops(&hdr); 2327 } 2328 2329 static void nfs4_xdr_enc_release_lockowner(struct rpc_rqst *req, 2330 struct xdr_stream *xdr, 2331 struct nfs_release_lockowner_args *args) 2332 { 2333 struct compound_hdr hdr = { 2334 .minorversion = 0, 2335 }; 2336 2337 encode_compound_hdr(xdr, req, &hdr); 2338 encode_release_lockowner(xdr, &args->lock_owner, &hdr); 2339 encode_nops(&hdr); 2340 } 2341 2342 /* 2343 * Encode a READLINK request 2344 */ 2345 static void nfs4_xdr_enc_readlink(struct rpc_rqst *req, struct xdr_stream *xdr, 2346 const struct nfs4_readlink *args) 2347 { 2348 struct compound_hdr hdr = { 2349 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2350 }; 2351 2352 encode_compound_hdr(xdr, req, &hdr); 2353 encode_sequence(xdr, &args->seq_args, &hdr); 2354 encode_putfh(xdr, args->fh, &hdr); 2355 encode_readlink(xdr, args, req, &hdr); 2356 2357 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages, 2358 args->pgbase, args->pglen); 2359 encode_nops(&hdr); 2360 } 2361 2362 /* 2363 * Encode a READDIR request 2364 */ 2365 static void nfs4_xdr_enc_readdir(struct rpc_rqst *req, struct xdr_stream *xdr, 2366 const struct nfs4_readdir_arg *args) 2367 { 2368 struct compound_hdr hdr = { 2369 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2370 }; 2371 2372 encode_compound_hdr(xdr, req, &hdr); 2373 encode_sequence(xdr, &args->seq_args, &hdr); 2374 encode_putfh(xdr, args->fh, &hdr); 2375 encode_readdir(xdr, args, req, &hdr); 2376 2377 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages, 2378 args->pgbase, args->count); 2379 dprintk("%s: inlined page args = (%u, %p, %u, %u)\n", 2380 __func__, hdr.replen << 2, args->pages, 2381 args->pgbase, args->count); 2382 encode_nops(&hdr); 2383 } 2384 2385 /* 2386 * Encode a READ request 2387 */ 2388 static void nfs4_xdr_enc_read(struct rpc_rqst *req, struct xdr_stream *xdr, 2389 struct nfs_readargs *args) 2390 { 2391 struct compound_hdr hdr = { 2392 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2393 }; 2394 2395 encode_compound_hdr(xdr, req, &hdr); 2396 encode_sequence(xdr, &args->seq_args, &hdr); 2397 encode_putfh(xdr, args->fh, &hdr); 2398 encode_read(xdr, args, &hdr); 2399 2400 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, 2401 args->pages, args->pgbase, args->count); 2402 req->rq_rcv_buf.flags |= XDRBUF_READ; 2403 encode_nops(&hdr); 2404 } 2405 2406 /* 2407 * Encode an SETATTR request 2408 */ 2409 static void nfs4_xdr_enc_setattr(struct rpc_rqst *req, struct xdr_stream *xdr, 2410 struct nfs_setattrargs *args) 2411 { 2412 struct compound_hdr hdr = { 2413 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2414 }; 2415 2416 encode_compound_hdr(xdr, req, &hdr); 2417 encode_sequence(xdr, &args->seq_args, &hdr); 2418 encode_putfh(xdr, args->fh, &hdr); 2419 encode_setattr(xdr, args, args->server, &hdr); 2420 encode_getfattr(xdr, args->bitmask, &hdr); 2421 encode_nops(&hdr); 2422 } 2423 2424 /* 2425 * Encode a GETACL request 2426 */ 2427 static void nfs4_xdr_enc_getacl(struct rpc_rqst *req, struct xdr_stream *xdr, 2428 struct nfs_getaclargs *args) 2429 { 2430 struct compound_hdr hdr = { 2431 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2432 }; 2433 uint32_t replen; 2434 2435 encode_compound_hdr(xdr, req, &hdr); 2436 encode_sequence(xdr, &args->seq_args, &hdr); 2437 encode_putfh(xdr, args->fh, &hdr); 2438 replen = hdr.replen + op_decode_hdr_maxsz + 1; 2439 encode_getattr_two(xdr, FATTR4_WORD0_ACL, 0, &hdr); 2440 2441 xdr_inline_pages(&req->rq_rcv_buf, replen << 2, 2442 args->acl_pages, args->acl_pgbase, args->acl_len); 2443 2444 encode_nops(&hdr); 2445 } 2446 2447 /* 2448 * Encode a WRITE request 2449 */ 2450 static void nfs4_xdr_enc_write(struct rpc_rqst *req, struct xdr_stream *xdr, 2451 struct nfs_writeargs *args) 2452 { 2453 struct compound_hdr hdr = { 2454 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2455 }; 2456 2457 encode_compound_hdr(xdr, req, &hdr); 2458 encode_sequence(xdr, &args->seq_args, &hdr); 2459 encode_putfh(xdr, args->fh, &hdr); 2460 encode_write(xdr, args, &hdr); 2461 req->rq_snd_buf.flags |= XDRBUF_WRITE; 2462 if (args->bitmask) 2463 encode_getfattr(xdr, args->bitmask, &hdr); 2464 encode_nops(&hdr); 2465 } 2466 2467 /* 2468 * a COMMIT request 2469 */ 2470 static void nfs4_xdr_enc_commit(struct rpc_rqst *req, struct xdr_stream *xdr, 2471 struct nfs_commitargs *args) 2472 { 2473 struct compound_hdr hdr = { 2474 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2475 }; 2476 2477 encode_compound_hdr(xdr, req, &hdr); 2478 encode_sequence(xdr, &args->seq_args, &hdr); 2479 encode_putfh(xdr, args->fh, &hdr); 2480 encode_commit(xdr, args, &hdr); 2481 encode_nops(&hdr); 2482 } 2483 2484 /* 2485 * FSINFO request 2486 */ 2487 static void nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr, 2488 struct nfs4_fsinfo_arg *args) 2489 { 2490 struct compound_hdr hdr = { 2491 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2492 }; 2493 2494 encode_compound_hdr(xdr, req, &hdr); 2495 encode_sequence(xdr, &args->seq_args, &hdr); 2496 encode_putfh(xdr, args->fh, &hdr); 2497 encode_fsinfo(xdr, args->bitmask, &hdr); 2498 encode_nops(&hdr); 2499 } 2500 2501 /* 2502 * a PATHCONF request 2503 */ 2504 static void nfs4_xdr_enc_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr, 2505 const struct nfs4_pathconf_arg *args) 2506 { 2507 struct compound_hdr hdr = { 2508 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2509 }; 2510 2511 encode_compound_hdr(xdr, req, &hdr); 2512 encode_sequence(xdr, &args->seq_args, &hdr); 2513 encode_putfh(xdr, args->fh, &hdr); 2514 encode_getattr_one(xdr, args->bitmask[0] & nfs4_pathconf_bitmap[0], 2515 &hdr); 2516 encode_nops(&hdr); 2517 } 2518 2519 /* 2520 * a STATFS request 2521 */ 2522 static void nfs4_xdr_enc_statfs(struct rpc_rqst *req, struct xdr_stream *xdr, 2523 const struct nfs4_statfs_arg *args) 2524 { 2525 struct compound_hdr hdr = { 2526 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2527 }; 2528 2529 encode_compound_hdr(xdr, req, &hdr); 2530 encode_sequence(xdr, &args->seq_args, &hdr); 2531 encode_putfh(xdr, args->fh, &hdr); 2532 encode_getattr_two(xdr, args->bitmask[0] & nfs4_statfs_bitmap[0], 2533 args->bitmask[1] & nfs4_statfs_bitmap[1], &hdr); 2534 encode_nops(&hdr); 2535 } 2536 2537 /* 2538 * GETATTR_BITMAP request 2539 */ 2540 static void nfs4_xdr_enc_server_caps(struct rpc_rqst *req, 2541 struct xdr_stream *xdr, 2542 struct nfs4_server_caps_arg *args) 2543 { 2544 struct compound_hdr hdr = { 2545 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2546 }; 2547 2548 encode_compound_hdr(xdr, req, &hdr); 2549 encode_sequence(xdr, &args->seq_args, &hdr); 2550 encode_putfh(xdr, args->fhandle, &hdr); 2551 encode_getattr_one(xdr, FATTR4_WORD0_SUPPORTED_ATTRS| 2552 FATTR4_WORD0_FH_EXPIRE_TYPE| 2553 FATTR4_WORD0_LINK_SUPPORT| 2554 FATTR4_WORD0_SYMLINK_SUPPORT| 2555 FATTR4_WORD0_ACLSUPPORT, &hdr); 2556 encode_nops(&hdr); 2557 } 2558 2559 /* 2560 * a RENEW request 2561 */ 2562 static void nfs4_xdr_enc_renew(struct rpc_rqst *req, struct xdr_stream *xdr, 2563 struct nfs_client *clp) 2564 { 2565 struct compound_hdr hdr = { 2566 .nops = 0, 2567 }; 2568 2569 encode_compound_hdr(xdr, req, &hdr); 2570 encode_renew(xdr, clp->cl_clientid, &hdr); 2571 encode_nops(&hdr); 2572 } 2573 2574 /* 2575 * a SETCLIENTID request 2576 */ 2577 static void nfs4_xdr_enc_setclientid(struct rpc_rqst *req, 2578 struct xdr_stream *xdr, 2579 struct nfs4_setclientid *sc) 2580 { 2581 struct compound_hdr hdr = { 2582 .nops = 0, 2583 }; 2584 2585 encode_compound_hdr(xdr, req, &hdr); 2586 encode_setclientid(xdr, sc, &hdr); 2587 encode_nops(&hdr); 2588 } 2589 2590 /* 2591 * a SETCLIENTID_CONFIRM request 2592 */ 2593 static void nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req, 2594 struct xdr_stream *xdr, 2595 struct nfs4_setclientid_res *arg) 2596 { 2597 struct compound_hdr hdr = { 2598 .nops = 0, 2599 }; 2600 2601 encode_compound_hdr(xdr, req, &hdr); 2602 encode_setclientid_confirm(xdr, arg, &hdr); 2603 encode_nops(&hdr); 2604 } 2605 2606 /* 2607 * DELEGRETURN request 2608 */ 2609 static void nfs4_xdr_enc_delegreturn(struct rpc_rqst *req, 2610 struct xdr_stream *xdr, 2611 const struct nfs4_delegreturnargs *args) 2612 { 2613 struct compound_hdr hdr = { 2614 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2615 }; 2616 2617 encode_compound_hdr(xdr, req, &hdr); 2618 encode_sequence(xdr, &args->seq_args, &hdr); 2619 encode_putfh(xdr, args->fhandle, &hdr); 2620 encode_getfattr(xdr, args->bitmask, &hdr); 2621 encode_delegreturn(xdr, args->stateid, &hdr); 2622 encode_nops(&hdr); 2623 } 2624 2625 /* 2626 * Encode FS_LOCATIONS request 2627 */ 2628 static void nfs4_xdr_enc_fs_locations(struct rpc_rqst *req, 2629 struct xdr_stream *xdr, 2630 struct nfs4_fs_locations_arg *args) 2631 { 2632 struct compound_hdr hdr = { 2633 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2634 }; 2635 uint32_t replen; 2636 2637 encode_compound_hdr(xdr, req, &hdr); 2638 encode_sequence(xdr, &args->seq_args, &hdr); 2639 encode_putfh(xdr, args->dir_fh, &hdr); 2640 encode_lookup(xdr, args->name, &hdr); 2641 replen = hdr.replen; /* get the attribute into args->page */ 2642 encode_fs_locations(xdr, args->bitmask, &hdr); 2643 2644 xdr_inline_pages(&req->rq_rcv_buf, replen << 2, &args->page, 2645 0, PAGE_SIZE); 2646 encode_nops(&hdr); 2647 } 2648 2649 /* 2650 * Encode SECINFO request 2651 */ 2652 static void nfs4_xdr_enc_secinfo(struct rpc_rqst *req, 2653 struct xdr_stream *xdr, 2654 struct nfs4_secinfo_arg *args) 2655 { 2656 struct compound_hdr hdr = { 2657 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2658 }; 2659 2660 encode_compound_hdr(xdr, req, &hdr); 2661 encode_sequence(xdr, &args->seq_args, &hdr); 2662 encode_putfh(xdr, args->dir_fh, &hdr); 2663 encode_secinfo(xdr, args->name, &hdr); 2664 encode_nops(&hdr); 2665 } 2666 2667 #if defined(CONFIG_NFS_V4_1) 2668 /* 2669 * BIND_CONN_TO_SESSION request 2670 */ 2671 static void nfs4_xdr_enc_bind_conn_to_session(struct rpc_rqst *req, 2672 struct xdr_stream *xdr, 2673 struct nfs_client *clp) 2674 { 2675 struct compound_hdr hdr = { 2676 .minorversion = clp->cl_mvops->minor_version, 2677 }; 2678 2679 encode_compound_hdr(xdr, req, &hdr); 2680 encode_bind_conn_to_session(xdr, clp->cl_session, &hdr); 2681 encode_nops(&hdr); 2682 } 2683 2684 /* 2685 * EXCHANGE_ID request 2686 */ 2687 static void nfs4_xdr_enc_exchange_id(struct rpc_rqst *req, 2688 struct xdr_stream *xdr, 2689 struct nfs41_exchange_id_args *args) 2690 { 2691 struct compound_hdr hdr = { 2692 .minorversion = args->client->cl_mvops->minor_version, 2693 }; 2694 2695 encode_compound_hdr(xdr, req, &hdr); 2696 encode_exchange_id(xdr, args, &hdr); 2697 encode_nops(&hdr); 2698 } 2699 2700 /* 2701 * a CREATE_SESSION request 2702 */ 2703 static void nfs4_xdr_enc_create_session(struct rpc_rqst *req, 2704 struct xdr_stream *xdr, 2705 struct nfs41_create_session_args *args) 2706 { 2707 struct compound_hdr hdr = { 2708 .minorversion = args->client->cl_mvops->minor_version, 2709 }; 2710 2711 encode_compound_hdr(xdr, req, &hdr); 2712 encode_create_session(xdr, args, &hdr); 2713 encode_nops(&hdr); 2714 } 2715 2716 /* 2717 * a DESTROY_SESSION request 2718 */ 2719 static void nfs4_xdr_enc_destroy_session(struct rpc_rqst *req, 2720 struct xdr_stream *xdr, 2721 struct nfs4_session *session) 2722 { 2723 struct compound_hdr hdr = { 2724 .minorversion = session->clp->cl_mvops->minor_version, 2725 }; 2726 2727 encode_compound_hdr(xdr, req, &hdr); 2728 encode_destroy_session(xdr, session, &hdr); 2729 encode_nops(&hdr); 2730 } 2731 2732 /* 2733 * a DESTROY_CLIENTID request 2734 */ 2735 static void nfs4_xdr_enc_destroy_clientid(struct rpc_rqst *req, 2736 struct xdr_stream *xdr, 2737 struct nfs_client *clp) 2738 { 2739 struct compound_hdr hdr = { 2740 .minorversion = clp->cl_mvops->minor_version, 2741 }; 2742 2743 encode_compound_hdr(xdr, req, &hdr); 2744 encode_destroy_clientid(xdr, clp->cl_clientid, &hdr); 2745 encode_nops(&hdr); 2746 } 2747 2748 /* 2749 * a SEQUENCE request 2750 */ 2751 static void nfs4_xdr_enc_sequence(struct rpc_rqst *req, struct xdr_stream *xdr, 2752 struct nfs4_sequence_args *args) 2753 { 2754 struct compound_hdr hdr = { 2755 .minorversion = nfs4_xdr_minorversion(args), 2756 }; 2757 2758 encode_compound_hdr(xdr, req, &hdr); 2759 encode_sequence(xdr, args, &hdr); 2760 encode_nops(&hdr); 2761 } 2762 2763 /* 2764 * a GET_LEASE_TIME request 2765 */ 2766 static void nfs4_xdr_enc_get_lease_time(struct rpc_rqst *req, 2767 struct xdr_stream *xdr, 2768 struct nfs4_get_lease_time_args *args) 2769 { 2770 struct compound_hdr hdr = { 2771 .minorversion = nfs4_xdr_minorversion(&args->la_seq_args), 2772 }; 2773 const u32 lease_bitmap[3] = { FATTR4_WORD0_LEASE_TIME }; 2774 2775 encode_compound_hdr(xdr, req, &hdr); 2776 encode_sequence(xdr, &args->la_seq_args, &hdr); 2777 encode_putrootfh(xdr, &hdr); 2778 encode_fsinfo(xdr, lease_bitmap, &hdr); 2779 encode_nops(&hdr); 2780 } 2781 2782 /* 2783 * a RECLAIM_COMPLETE request 2784 */ 2785 static void nfs4_xdr_enc_reclaim_complete(struct rpc_rqst *req, 2786 struct xdr_stream *xdr, 2787 struct nfs41_reclaim_complete_args *args) 2788 { 2789 struct compound_hdr hdr = { 2790 .minorversion = nfs4_xdr_minorversion(&args->seq_args) 2791 }; 2792 2793 encode_compound_hdr(xdr, req, &hdr); 2794 encode_sequence(xdr, &args->seq_args, &hdr); 2795 encode_reclaim_complete(xdr, args, &hdr); 2796 encode_nops(&hdr); 2797 } 2798 2799 /* 2800 * Encode GETDEVICELIST request 2801 */ 2802 static void nfs4_xdr_enc_getdevicelist(struct rpc_rqst *req, 2803 struct xdr_stream *xdr, 2804 struct nfs4_getdevicelist_args *args) 2805 { 2806 struct compound_hdr hdr = { 2807 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2808 }; 2809 2810 encode_compound_hdr(xdr, req, &hdr); 2811 encode_sequence(xdr, &args->seq_args, &hdr); 2812 encode_putfh(xdr, args->fh, &hdr); 2813 encode_getdevicelist(xdr, args, &hdr); 2814 encode_nops(&hdr); 2815 } 2816 2817 /* 2818 * Encode GETDEVICEINFO request 2819 */ 2820 static void nfs4_xdr_enc_getdeviceinfo(struct rpc_rqst *req, 2821 struct xdr_stream *xdr, 2822 struct nfs4_getdeviceinfo_args *args) 2823 { 2824 struct compound_hdr hdr = { 2825 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2826 }; 2827 2828 encode_compound_hdr(xdr, req, &hdr); 2829 encode_sequence(xdr, &args->seq_args, &hdr); 2830 encode_getdeviceinfo(xdr, args, &hdr); 2831 2832 /* set up reply kvec. Subtract notification bitmap max size (2) 2833 * so that notification bitmap is put in xdr_buf tail */ 2834 xdr_inline_pages(&req->rq_rcv_buf, (hdr.replen - 2) << 2, 2835 args->pdev->pages, args->pdev->pgbase, 2836 args->pdev->pglen); 2837 2838 encode_nops(&hdr); 2839 } 2840 2841 /* 2842 * Encode LAYOUTGET request 2843 */ 2844 static void nfs4_xdr_enc_layoutget(struct rpc_rqst *req, 2845 struct xdr_stream *xdr, 2846 struct nfs4_layoutget_args *args) 2847 { 2848 struct compound_hdr hdr = { 2849 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2850 }; 2851 2852 encode_compound_hdr(xdr, req, &hdr); 2853 encode_sequence(xdr, &args->seq_args, &hdr); 2854 encode_putfh(xdr, NFS_FH(args->inode), &hdr); 2855 encode_layoutget(xdr, args, &hdr); 2856 2857 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, 2858 args->layout.pages, 0, args->layout.pglen); 2859 2860 encode_nops(&hdr); 2861 } 2862 2863 /* 2864 * Encode LAYOUTCOMMIT request 2865 */ 2866 static void nfs4_xdr_enc_layoutcommit(struct rpc_rqst *req, 2867 struct xdr_stream *xdr, 2868 struct nfs4_layoutcommit_args *args) 2869 { 2870 struct nfs4_layoutcommit_data *data = 2871 container_of(args, struct nfs4_layoutcommit_data, args); 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, NFS_FH(args->inode), &hdr); 2879 encode_layoutcommit(xdr, data->args.inode, args, &hdr); 2880 encode_getfattr(xdr, args->bitmask, &hdr); 2881 encode_nops(&hdr); 2882 } 2883 2884 /* 2885 * Encode LAYOUTRETURN request 2886 */ 2887 static void nfs4_xdr_enc_layoutreturn(struct rpc_rqst *req, 2888 struct xdr_stream *xdr, 2889 struct nfs4_layoutreturn_args *args) 2890 { 2891 struct compound_hdr hdr = { 2892 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2893 }; 2894 2895 encode_compound_hdr(xdr, req, &hdr); 2896 encode_sequence(xdr, &args->seq_args, &hdr); 2897 encode_putfh(xdr, NFS_FH(args->inode), &hdr); 2898 encode_layoutreturn(xdr, args, &hdr); 2899 encode_nops(&hdr); 2900 } 2901 2902 /* 2903 * Encode SECINFO_NO_NAME request 2904 */ 2905 static int nfs4_xdr_enc_secinfo_no_name(struct rpc_rqst *req, 2906 struct xdr_stream *xdr, 2907 struct nfs41_secinfo_no_name_args *args) 2908 { 2909 struct compound_hdr hdr = { 2910 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2911 }; 2912 2913 encode_compound_hdr(xdr, req, &hdr); 2914 encode_sequence(xdr, &args->seq_args, &hdr); 2915 encode_putrootfh(xdr, &hdr); 2916 encode_secinfo_no_name(xdr, args, &hdr); 2917 encode_nops(&hdr); 2918 return 0; 2919 } 2920 2921 /* 2922 * Encode TEST_STATEID request 2923 */ 2924 static void nfs4_xdr_enc_test_stateid(struct rpc_rqst *req, 2925 struct xdr_stream *xdr, 2926 struct nfs41_test_stateid_args *args) 2927 { 2928 struct compound_hdr hdr = { 2929 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2930 }; 2931 2932 encode_compound_hdr(xdr, req, &hdr); 2933 encode_sequence(xdr, &args->seq_args, &hdr); 2934 encode_test_stateid(xdr, args, &hdr); 2935 encode_nops(&hdr); 2936 } 2937 2938 /* 2939 * Encode FREE_STATEID request 2940 */ 2941 static void nfs4_xdr_enc_free_stateid(struct rpc_rqst *req, 2942 struct xdr_stream *xdr, 2943 struct nfs41_free_stateid_args *args) 2944 { 2945 struct compound_hdr hdr = { 2946 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2947 }; 2948 2949 encode_compound_hdr(xdr, req, &hdr); 2950 encode_sequence(xdr, &args->seq_args, &hdr); 2951 encode_free_stateid(xdr, args, &hdr); 2952 encode_nops(&hdr); 2953 } 2954 #endif /* CONFIG_NFS_V4_1 */ 2955 2956 static void print_overflow_msg(const char *func, const struct xdr_stream *xdr) 2957 { 2958 dprintk("nfs: %s: prematurely hit end of receive buffer. " 2959 "Remaining buffer length is %tu words.\n", 2960 func, xdr->end - xdr->p); 2961 } 2962 2963 static int decode_opaque_inline(struct xdr_stream *xdr, unsigned int *len, char **string) 2964 { 2965 __be32 *p; 2966 2967 p = xdr_inline_decode(xdr, 4); 2968 if (unlikely(!p)) 2969 goto out_overflow; 2970 *len = be32_to_cpup(p); 2971 p = xdr_inline_decode(xdr, *len); 2972 if (unlikely(!p)) 2973 goto out_overflow; 2974 *string = (char *)p; 2975 return 0; 2976 out_overflow: 2977 print_overflow_msg(__func__, xdr); 2978 return -EIO; 2979 } 2980 2981 static int decode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr) 2982 { 2983 __be32 *p; 2984 2985 p = xdr_inline_decode(xdr, 8); 2986 if (unlikely(!p)) 2987 goto out_overflow; 2988 hdr->status = be32_to_cpup(p++); 2989 hdr->taglen = be32_to_cpup(p); 2990 2991 p = xdr_inline_decode(xdr, hdr->taglen + 4); 2992 if (unlikely(!p)) 2993 goto out_overflow; 2994 hdr->tag = (char *)p; 2995 p += XDR_QUADLEN(hdr->taglen); 2996 hdr->nops = be32_to_cpup(p); 2997 if (unlikely(hdr->nops < 1)) 2998 return nfs4_stat_to_errno(hdr->status); 2999 return 0; 3000 out_overflow: 3001 print_overflow_msg(__func__, xdr); 3002 return -EIO; 3003 } 3004 3005 static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected) 3006 { 3007 __be32 *p; 3008 uint32_t opnum; 3009 int32_t nfserr; 3010 3011 p = xdr_inline_decode(xdr, 8); 3012 if (unlikely(!p)) 3013 goto out_overflow; 3014 opnum = be32_to_cpup(p++); 3015 if (opnum != expected) { 3016 dprintk("nfs: Server returned operation" 3017 " %d but we issued a request for %d\n", 3018 opnum, expected); 3019 return -EIO; 3020 } 3021 nfserr = be32_to_cpup(p); 3022 if (nfserr != NFS_OK) 3023 return nfs4_stat_to_errno(nfserr); 3024 return 0; 3025 out_overflow: 3026 print_overflow_msg(__func__, xdr); 3027 return -EIO; 3028 } 3029 3030 /* Dummy routine */ 3031 static int decode_ace(struct xdr_stream *xdr, void *ace, struct nfs_client *clp) 3032 { 3033 __be32 *p; 3034 unsigned int strlen; 3035 char *str; 3036 3037 p = xdr_inline_decode(xdr, 12); 3038 if (likely(p)) 3039 return decode_opaque_inline(xdr, &strlen, &str); 3040 print_overflow_msg(__func__, xdr); 3041 return -EIO; 3042 } 3043 3044 static int decode_attr_bitmap(struct xdr_stream *xdr, uint32_t *bitmap) 3045 { 3046 uint32_t bmlen; 3047 __be32 *p; 3048 3049 p = xdr_inline_decode(xdr, 4); 3050 if (unlikely(!p)) 3051 goto out_overflow; 3052 bmlen = be32_to_cpup(p); 3053 3054 bitmap[0] = bitmap[1] = bitmap[2] = 0; 3055 p = xdr_inline_decode(xdr, (bmlen << 2)); 3056 if (unlikely(!p)) 3057 goto out_overflow; 3058 if (bmlen > 0) { 3059 bitmap[0] = be32_to_cpup(p++); 3060 if (bmlen > 1) { 3061 bitmap[1] = be32_to_cpup(p++); 3062 if (bmlen > 2) 3063 bitmap[2] = be32_to_cpup(p); 3064 } 3065 } 3066 return 0; 3067 out_overflow: 3068 print_overflow_msg(__func__, xdr); 3069 return -EIO; 3070 } 3071 3072 static int decode_attr_length(struct xdr_stream *xdr, uint32_t *attrlen, unsigned int *savep) 3073 { 3074 __be32 *p; 3075 3076 p = xdr_inline_decode(xdr, 4); 3077 if (unlikely(!p)) 3078 goto out_overflow; 3079 *attrlen = be32_to_cpup(p); 3080 *savep = xdr_stream_pos(xdr); 3081 return 0; 3082 out_overflow: 3083 print_overflow_msg(__func__, xdr); 3084 return -EIO; 3085 } 3086 3087 static int decode_attr_supported(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *bitmask) 3088 { 3089 if (likely(bitmap[0] & FATTR4_WORD0_SUPPORTED_ATTRS)) { 3090 int ret; 3091 ret = decode_attr_bitmap(xdr, bitmask); 3092 if (unlikely(ret < 0)) 3093 return ret; 3094 bitmap[0] &= ~FATTR4_WORD0_SUPPORTED_ATTRS; 3095 } else 3096 bitmask[0] = bitmask[1] = bitmask[2] = 0; 3097 dprintk("%s: bitmask=%08x:%08x:%08x\n", __func__, 3098 bitmask[0], bitmask[1], bitmask[2]); 3099 return 0; 3100 } 3101 3102 static int decode_attr_type(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *type) 3103 { 3104 __be32 *p; 3105 int ret = 0; 3106 3107 *type = 0; 3108 if (unlikely(bitmap[0] & (FATTR4_WORD0_TYPE - 1U))) 3109 return -EIO; 3110 if (likely(bitmap[0] & FATTR4_WORD0_TYPE)) { 3111 p = xdr_inline_decode(xdr, 4); 3112 if (unlikely(!p)) 3113 goto out_overflow; 3114 *type = be32_to_cpup(p); 3115 if (*type < NF4REG || *type > NF4NAMEDATTR) { 3116 dprintk("%s: bad type %d\n", __func__, *type); 3117 return -EIO; 3118 } 3119 bitmap[0] &= ~FATTR4_WORD0_TYPE; 3120 ret = NFS_ATTR_FATTR_TYPE; 3121 } 3122 dprintk("%s: type=0%o\n", __func__, nfs_type2fmt[*type]); 3123 return ret; 3124 out_overflow: 3125 print_overflow_msg(__func__, xdr); 3126 return -EIO; 3127 } 3128 3129 static int decode_attr_fh_expire_type(struct xdr_stream *xdr, 3130 uint32_t *bitmap, uint32_t *type) 3131 { 3132 __be32 *p; 3133 3134 *type = 0; 3135 if (unlikely(bitmap[0] & (FATTR4_WORD0_FH_EXPIRE_TYPE - 1U))) 3136 return -EIO; 3137 if (likely(bitmap[0] & FATTR4_WORD0_FH_EXPIRE_TYPE)) { 3138 p = xdr_inline_decode(xdr, 4); 3139 if (unlikely(!p)) 3140 goto out_overflow; 3141 *type = be32_to_cpup(p); 3142 bitmap[0] &= ~FATTR4_WORD0_FH_EXPIRE_TYPE; 3143 } 3144 dprintk("%s: expire type=0x%x\n", __func__, *type); 3145 return 0; 3146 out_overflow: 3147 print_overflow_msg(__func__, xdr); 3148 return -EIO; 3149 } 3150 3151 static int decode_attr_change(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *change) 3152 { 3153 __be32 *p; 3154 int ret = 0; 3155 3156 *change = 0; 3157 if (unlikely(bitmap[0] & (FATTR4_WORD0_CHANGE - 1U))) 3158 return -EIO; 3159 if (likely(bitmap[0] & FATTR4_WORD0_CHANGE)) { 3160 p = xdr_inline_decode(xdr, 8); 3161 if (unlikely(!p)) 3162 goto out_overflow; 3163 xdr_decode_hyper(p, change); 3164 bitmap[0] &= ~FATTR4_WORD0_CHANGE; 3165 ret = NFS_ATTR_FATTR_CHANGE; 3166 } 3167 dprintk("%s: change attribute=%Lu\n", __func__, 3168 (unsigned long long)*change); 3169 return ret; 3170 out_overflow: 3171 print_overflow_msg(__func__, xdr); 3172 return -EIO; 3173 } 3174 3175 static int decode_attr_size(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *size) 3176 { 3177 __be32 *p; 3178 int ret = 0; 3179 3180 *size = 0; 3181 if (unlikely(bitmap[0] & (FATTR4_WORD0_SIZE - 1U))) 3182 return -EIO; 3183 if (likely(bitmap[0] & FATTR4_WORD0_SIZE)) { 3184 p = xdr_inline_decode(xdr, 8); 3185 if (unlikely(!p)) 3186 goto out_overflow; 3187 xdr_decode_hyper(p, size); 3188 bitmap[0] &= ~FATTR4_WORD0_SIZE; 3189 ret = NFS_ATTR_FATTR_SIZE; 3190 } 3191 dprintk("%s: file size=%Lu\n", __func__, (unsigned long long)*size); 3192 return ret; 3193 out_overflow: 3194 print_overflow_msg(__func__, xdr); 3195 return -EIO; 3196 } 3197 3198 static int decode_attr_link_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) 3199 { 3200 __be32 *p; 3201 3202 *res = 0; 3203 if (unlikely(bitmap[0] & (FATTR4_WORD0_LINK_SUPPORT - 1U))) 3204 return -EIO; 3205 if (likely(bitmap[0] & FATTR4_WORD0_LINK_SUPPORT)) { 3206 p = xdr_inline_decode(xdr, 4); 3207 if (unlikely(!p)) 3208 goto out_overflow; 3209 *res = be32_to_cpup(p); 3210 bitmap[0] &= ~FATTR4_WORD0_LINK_SUPPORT; 3211 } 3212 dprintk("%s: link support=%s\n", __func__, *res == 0 ? "false" : "true"); 3213 return 0; 3214 out_overflow: 3215 print_overflow_msg(__func__, xdr); 3216 return -EIO; 3217 } 3218 3219 static int decode_attr_symlink_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) 3220 { 3221 __be32 *p; 3222 3223 *res = 0; 3224 if (unlikely(bitmap[0] & (FATTR4_WORD0_SYMLINK_SUPPORT - 1U))) 3225 return -EIO; 3226 if (likely(bitmap[0] & FATTR4_WORD0_SYMLINK_SUPPORT)) { 3227 p = xdr_inline_decode(xdr, 4); 3228 if (unlikely(!p)) 3229 goto out_overflow; 3230 *res = be32_to_cpup(p); 3231 bitmap[0] &= ~FATTR4_WORD0_SYMLINK_SUPPORT; 3232 } 3233 dprintk("%s: symlink support=%s\n", __func__, *res == 0 ? "false" : "true"); 3234 return 0; 3235 out_overflow: 3236 print_overflow_msg(__func__, xdr); 3237 return -EIO; 3238 } 3239 3240 static int decode_attr_fsid(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fsid *fsid) 3241 { 3242 __be32 *p; 3243 int ret = 0; 3244 3245 fsid->major = 0; 3246 fsid->minor = 0; 3247 if (unlikely(bitmap[0] & (FATTR4_WORD0_FSID - 1U))) 3248 return -EIO; 3249 if (likely(bitmap[0] & FATTR4_WORD0_FSID)) { 3250 p = xdr_inline_decode(xdr, 16); 3251 if (unlikely(!p)) 3252 goto out_overflow; 3253 p = xdr_decode_hyper(p, &fsid->major); 3254 xdr_decode_hyper(p, &fsid->minor); 3255 bitmap[0] &= ~FATTR4_WORD0_FSID; 3256 ret = NFS_ATTR_FATTR_FSID; 3257 } 3258 dprintk("%s: fsid=(0x%Lx/0x%Lx)\n", __func__, 3259 (unsigned long long)fsid->major, 3260 (unsigned long long)fsid->minor); 3261 return ret; 3262 out_overflow: 3263 print_overflow_msg(__func__, xdr); 3264 return -EIO; 3265 } 3266 3267 static int decode_attr_lease_time(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) 3268 { 3269 __be32 *p; 3270 3271 *res = 60; 3272 if (unlikely(bitmap[0] & (FATTR4_WORD0_LEASE_TIME - 1U))) 3273 return -EIO; 3274 if (likely(bitmap[0] & FATTR4_WORD0_LEASE_TIME)) { 3275 p = xdr_inline_decode(xdr, 4); 3276 if (unlikely(!p)) 3277 goto out_overflow; 3278 *res = be32_to_cpup(p); 3279 bitmap[0] &= ~FATTR4_WORD0_LEASE_TIME; 3280 } 3281 dprintk("%s: file size=%u\n", __func__, (unsigned int)*res); 3282 return 0; 3283 out_overflow: 3284 print_overflow_msg(__func__, xdr); 3285 return -EIO; 3286 } 3287 3288 static int decode_attr_error(struct xdr_stream *xdr, uint32_t *bitmap, int32_t *res) 3289 { 3290 __be32 *p; 3291 3292 if (unlikely(bitmap[0] & (FATTR4_WORD0_RDATTR_ERROR - 1U))) 3293 return -EIO; 3294 if (likely(bitmap[0] & FATTR4_WORD0_RDATTR_ERROR)) { 3295 p = xdr_inline_decode(xdr, 4); 3296 if (unlikely(!p)) 3297 goto out_overflow; 3298 bitmap[0] &= ~FATTR4_WORD0_RDATTR_ERROR; 3299 *res = -be32_to_cpup(p); 3300 } 3301 return 0; 3302 out_overflow: 3303 print_overflow_msg(__func__, xdr); 3304 return -EIO; 3305 } 3306 3307 static int decode_attr_filehandle(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fh *fh) 3308 { 3309 __be32 *p; 3310 int len; 3311 3312 if (fh != NULL) 3313 memset(fh, 0, sizeof(*fh)); 3314 3315 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEHANDLE - 1U))) 3316 return -EIO; 3317 if (likely(bitmap[0] & FATTR4_WORD0_FILEHANDLE)) { 3318 p = xdr_inline_decode(xdr, 4); 3319 if (unlikely(!p)) 3320 goto out_overflow; 3321 len = be32_to_cpup(p); 3322 if (len > NFS4_FHSIZE) 3323 return -EIO; 3324 p = xdr_inline_decode(xdr, len); 3325 if (unlikely(!p)) 3326 goto out_overflow; 3327 if (fh != NULL) { 3328 memcpy(fh->data, p, len); 3329 fh->size = len; 3330 } 3331 bitmap[0] &= ~FATTR4_WORD0_FILEHANDLE; 3332 } 3333 return 0; 3334 out_overflow: 3335 print_overflow_msg(__func__, xdr); 3336 return -EIO; 3337 } 3338 3339 static int decode_attr_aclsupport(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) 3340 { 3341 __be32 *p; 3342 3343 *res = ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL; 3344 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACLSUPPORT - 1U))) 3345 return -EIO; 3346 if (likely(bitmap[0] & FATTR4_WORD0_ACLSUPPORT)) { 3347 p = xdr_inline_decode(xdr, 4); 3348 if (unlikely(!p)) 3349 goto out_overflow; 3350 *res = be32_to_cpup(p); 3351 bitmap[0] &= ~FATTR4_WORD0_ACLSUPPORT; 3352 } 3353 dprintk("%s: ACLs supported=%u\n", __func__, (unsigned int)*res); 3354 return 0; 3355 out_overflow: 3356 print_overflow_msg(__func__, xdr); 3357 return -EIO; 3358 } 3359 3360 static int decode_attr_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid) 3361 { 3362 __be32 *p; 3363 int ret = 0; 3364 3365 *fileid = 0; 3366 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEID - 1U))) 3367 return -EIO; 3368 if (likely(bitmap[0] & FATTR4_WORD0_FILEID)) { 3369 p = xdr_inline_decode(xdr, 8); 3370 if (unlikely(!p)) 3371 goto out_overflow; 3372 xdr_decode_hyper(p, fileid); 3373 bitmap[0] &= ~FATTR4_WORD0_FILEID; 3374 ret = NFS_ATTR_FATTR_FILEID; 3375 } 3376 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid); 3377 return ret; 3378 out_overflow: 3379 print_overflow_msg(__func__, xdr); 3380 return -EIO; 3381 } 3382 3383 static int decode_attr_mounted_on_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid) 3384 { 3385 __be32 *p; 3386 int ret = 0; 3387 3388 *fileid = 0; 3389 if (unlikely(bitmap[1] & (FATTR4_WORD1_MOUNTED_ON_FILEID - 1U))) 3390 return -EIO; 3391 if (likely(bitmap[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)) { 3392 p = xdr_inline_decode(xdr, 8); 3393 if (unlikely(!p)) 3394 goto out_overflow; 3395 xdr_decode_hyper(p, fileid); 3396 bitmap[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID; 3397 ret = NFS_ATTR_FATTR_MOUNTED_ON_FILEID; 3398 } 3399 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid); 3400 return ret; 3401 out_overflow: 3402 print_overflow_msg(__func__, xdr); 3403 return -EIO; 3404 } 3405 3406 static int decode_attr_files_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 3407 { 3408 __be32 *p; 3409 int status = 0; 3410 3411 *res = 0; 3412 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_AVAIL - 1U))) 3413 return -EIO; 3414 if (likely(bitmap[0] & FATTR4_WORD0_FILES_AVAIL)) { 3415 p = xdr_inline_decode(xdr, 8); 3416 if (unlikely(!p)) 3417 goto out_overflow; 3418 xdr_decode_hyper(p, res); 3419 bitmap[0] &= ~FATTR4_WORD0_FILES_AVAIL; 3420 } 3421 dprintk("%s: files avail=%Lu\n", __func__, (unsigned long long)*res); 3422 return status; 3423 out_overflow: 3424 print_overflow_msg(__func__, xdr); 3425 return -EIO; 3426 } 3427 3428 static int decode_attr_files_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 3429 { 3430 __be32 *p; 3431 int status = 0; 3432 3433 *res = 0; 3434 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_FREE - 1U))) 3435 return -EIO; 3436 if (likely(bitmap[0] & FATTR4_WORD0_FILES_FREE)) { 3437 p = xdr_inline_decode(xdr, 8); 3438 if (unlikely(!p)) 3439 goto out_overflow; 3440 xdr_decode_hyper(p, res); 3441 bitmap[0] &= ~FATTR4_WORD0_FILES_FREE; 3442 } 3443 dprintk("%s: files free=%Lu\n", __func__, (unsigned long long)*res); 3444 return status; 3445 out_overflow: 3446 print_overflow_msg(__func__, xdr); 3447 return -EIO; 3448 } 3449 3450 static int decode_attr_files_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 3451 { 3452 __be32 *p; 3453 int status = 0; 3454 3455 *res = 0; 3456 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_TOTAL - 1U))) 3457 return -EIO; 3458 if (likely(bitmap[0] & FATTR4_WORD0_FILES_TOTAL)) { 3459 p = xdr_inline_decode(xdr, 8); 3460 if (unlikely(!p)) 3461 goto out_overflow; 3462 xdr_decode_hyper(p, res); 3463 bitmap[0] &= ~FATTR4_WORD0_FILES_TOTAL; 3464 } 3465 dprintk("%s: files total=%Lu\n", __func__, (unsigned long long)*res); 3466 return status; 3467 out_overflow: 3468 print_overflow_msg(__func__, xdr); 3469 return -EIO; 3470 } 3471 3472 static int decode_pathname(struct xdr_stream *xdr, struct nfs4_pathname *path) 3473 { 3474 u32 n; 3475 __be32 *p; 3476 int status = 0; 3477 3478 p = xdr_inline_decode(xdr, 4); 3479 if (unlikely(!p)) 3480 goto out_overflow; 3481 n = be32_to_cpup(p); 3482 if (n == 0) 3483 goto root_path; 3484 dprintk("pathname4: "); 3485 if (n > NFS4_PATHNAME_MAXCOMPONENTS) { 3486 dprintk("cannot parse %d components in path\n", n); 3487 goto out_eio; 3488 } 3489 for (path->ncomponents = 0; path->ncomponents < n; path->ncomponents++) { 3490 struct nfs4_string *component = &path->components[path->ncomponents]; 3491 status = decode_opaque_inline(xdr, &component->len, &component->data); 3492 if (unlikely(status != 0)) 3493 goto out_eio; 3494 ifdebug (XDR) 3495 pr_cont("%s%.*s ", 3496 (path->ncomponents != n ? "/ " : ""), 3497 component->len, component->data); 3498 } 3499 out: 3500 return status; 3501 root_path: 3502 /* a root pathname is sent as a zero component4 */ 3503 path->ncomponents = 1; 3504 path->components[0].len=0; 3505 path->components[0].data=NULL; 3506 dprintk("pathname4: /\n"); 3507 goto out; 3508 out_eio: 3509 dprintk(" status %d", status); 3510 status = -EIO; 3511 goto out; 3512 out_overflow: 3513 print_overflow_msg(__func__, xdr); 3514 return -EIO; 3515 } 3516 3517 static int decode_attr_fs_locations(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_fs_locations *res) 3518 { 3519 int n; 3520 __be32 *p; 3521 int status = -EIO; 3522 3523 if (unlikely(bitmap[0] & (FATTR4_WORD0_FS_LOCATIONS -1U))) 3524 goto out; 3525 status = 0; 3526 if (unlikely(!(bitmap[0] & FATTR4_WORD0_FS_LOCATIONS))) 3527 goto out; 3528 status = -EIO; 3529 /* Ignore borken servers that return unrequested attrs */ 3530 if (unlikely(res == NULL)) 3531 goto out; 3532 dprintk("%s: fsroot:\n", __func__); 3533 status = decode_pathname(xdr, &res->fs_path); 3534 if (unlikely(status != 0)) 3535 goto out; 3536 p = xdr_inline_decode(xdr, 4); 3537 if (unlikely(!p)) 3538 goto out_overflow; 3539 n = be32_to_cpup(p); 3540 if (n <= 0) 3541 goto out_eio; 3542 for (res->nlocations = 0; res->nlocations < n; res->nlocations++) { 3543 u32 m; 3544 struct nfs4_fs_location *loc; 3545 3546 if (res->nlocations == NFS4_FS_LOCATIONS_MAXENTRIES) 3547 break; 3548 loc = &res->locations[res->nlocations]; 3549 p = xdr_inline_decode(xdr, 4); 3550 if (unlikely(!p)) 3551 goto out_overflow; 3552 m = be32_to_cpup(p); 3553 3554 dprintk("%s: servers:\n", __func__); 3555 for (loc->nservers = 0; loc->nservers < m; loc->nservers++) { 3556 struct nfs4_string *server; 3557 3558 if (loc->nservers == NFS4_FS_LOCATION_MAXSERVERS) { 3559 unsigned int i; 3560 dprintk("%s: using first %u of %u servers " 3561 "returned for location %u\n", 3562 __func__, 3563 NFS4_FS_LOCATION_MAXSERVERS, 3564 m, res->nlocations); 3565 for (i = loc->nservers; i < m; i++) { 3566 unsigned int len; 3567 char *data; 3568 status = decode_opaque_inline(xdr, &len, &data); 3569 if (unlikely(status != 0)) 3570 goto out_eio; 3571 } 3572 break; 3573 } 3574 server = &loc->servers[loc->nservers]; 3575 status = decode_opaque_inline(xdr, &server->len, &server->data); 3576 if (unlikely(status != 0)) 3577 goto out_eio; 3578 dprintk("%s ", server->data); 3579 } 3580 status = decode_pathname(xdr, &loc->rootpath); 3581 if (unlikely(status != 0)) 3582 goto out_eio; 3583 } 3584 if (res->nlocations != 0) 3585 status = NFS_ATTR_FATTR_V4_LOCATIONS; 3586 out: 3587 dprintk("%s: fs_locations done, error = %d\n", __func__, status); 3588 return status; 3589 out_overflow: 3590 print_overflow_msg(__func__, xdr); 3591 out_eio: 3592 status = -EIO; 3593 goto out; 3594 } 3595 3596 static int decode_attr_maxfilesize(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 3597 { 3598 __be32 *p; 3599 int status = 0; 3600 3601 *res = 0; 3602 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXFILESIZE - 1U))) 3603 return -EIO; 3604 if (likely(bitmap[0] & FATTR4_WORD0_MAXFILESIZE)) { 3605 p = xdr_inline_decode(xdr, 8); 3606 if (unlikely(!p)) 3607 goto out_overflow; 3608 xdr_decode_hyper(p, res); 3609 bitmap[0] &= ~FATTR4_WORD0_MAXFILESIZE; 3610 } 3611 dprintk("%s: maxfilesize=%Lu\n", __func__, (unsigned long long)*res); 3612 return status; 3613 out_overflow: 3614 print_overflow_msg(__func__, xdr); 3615 return -EIO; 3616 } 3617 3618 static int decode_attr_maxlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxlink) 3619 { 3620 __be32 *p; 3621 int status = 0; 3622 3623 *maxlink = 1; 3624 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXLINK - 1U))) 3625 return -EIO; 3626 if (likely(bitmap[0] & FATTR4_WORD0_MAXLINK)) { 3627 p = xdr_inline_decode(xdr, 4); 3628 if (unlikely(!p)) 3629 goto out_overflow; 3630 *maxlink = be32_to_cpup(p); 3631 bitmap[0] &= ~FATTR4_WORD0_MAXLINK; 3632 } 3633 dprintk("%s: maxlink=%u\n", __func__, *maxlink); 3634 return status; 3635 out_overflow: 3636 print_overflow_msg(__func__, xdr); 3637 return -EIO; 3638 } 3639 3640 static int decode_attr_maxname(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxname) 3641 { 3642 __be32 *p; 3643 int status = 0; 3644 3645 *maxname = 1024; 3646 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXNAME - 1U))) 3647 return -EIO; 3648 if (likely(bitmap[0] & FATTR4_WORD0_MAXNAME)) { 3649 p = xdr_inline_decode(xdr, 4); 3650 if (unlikely(!p)) 3651 goto out_overflow; 3652 *maxname = be32_to_cpup(p); 3653 bitmap[0] &= ~FATTR4_WORD0_MAXNAME; 3654 } 3655 dprintk("%s: maxname=%u\n", __func__, *maxname); 3656 return status; 3657 out_overflow: 3658 print_overflow_msg(__func__, xdr); 3659 return -EIO; 3660 } 3661 3662 static int decode_attr_maxread(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) 3663 { 3664 __be32 *p; 3665 int status = 0; 3666 3667 *res = 1024; 3668 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXREAD - 1U))) 3669 return -EIO; 3670 if (likely(bitmap[0] & FATTR4_WORD0_MAXREAD)) { 3671 uint64_t maxread; 3672 p = xdr_inline_decode(xdr, 8); 3673 if (unlikely(!p)) 3674 goto out_overflow; 3675 xdr_decode_hyper(p, &maxread); 3676 if (maxread > 0x7FFFFFFF) 3677 maxread = 0x7FFFFFFF; 3678 *res = (uint32_t)maxread; 3679 bitmap[0] &= ~FATTR4_WORD0_MAXREAD; 3680 } 3681 dprintk("%s: maxread=%lu\n", __func__, (unsigned long)*res); 3682 return status; 3683 out_overflow: 3684 print_overflow_msg(__func__, xdr); 3685 return -EIO; 3686 } 3687 3688 static int decode_attr_maxwrite(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) 3689 { 3690 __be32 *p; 3691 int status = 0; 3692 3693 *res = 1024; 3694 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXWRITE - 1U))) 3695 return -EIO; 3696 if (likely(bitmap[0] & FATTR4_WORD0_MAXWRITE)) { 3697 uint64_t maxwrite; 3698 p = xdr_inline_decode(xdr, 8); 3699 if (unlikely(!p)) 3700 goto out_overflow; 3701 xdr_decode_hyper(p, &maxwrite); 3702 if (maxwrite > 0x7FFFFFFF) 3703 maxwrite = 0x7FFFFFFF; 3704 *res = (uint32_t)maxwrite; 3705 bitmap[0] &= ~FATTR4_WORD0_MAXWRITE; 3706 } 3707 dprintk("%s: maxwrite=%lu\n", __func__, (unsigned long)*res); 3708 return status; 3709 out_overflow: 3710 print_overflow_msg(__func__, xdr); 3711 return -EIO; 3712 } 3713 3714 static int decode_attr_mode(struct xdr_stream *xdr, uint32_t *bitmap, umode_t *mode) 3715 { 3716 uint32_t tmp; 3717 __be32 *p; 3718 int ret = 0; 3719 3720 *mode = 0; 3721 if (unlikely(bitmap[1] & (FATTR4_WORD1_MODE - 1U))) 3722 return -EIO; 3723 if (likely(bitmap[1] & FATTR4_WORD1_MODE)) { 3724 p = xdr_inline_decode(xdr, 4); 3725 if (unlikely(!p)) 3726 goto out_overflow; 3727 tmp = be32_to_cpup(p); 3728 *mode = tmp & ~S_IFMT; 3729 bitmap[1] &= ~FATTR4_WORD1_MODE; 3730 ret = NFS_ATTR_FATTR_MODE; 3731 } 3732 dprintk("%s: file mode=0%o\n", __func__, (unsigned int)*mode); 3733 return ret; 3734 out_overflow: 3735 print_overflow_msg(__func__, xdr); 3736 return -EIO; 3737 } 3738 3739 static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *nlink) 3740 { 3741 __be32 *p; 3742 int ret = 0; 3743 3744 *nlink = 1; 3745 if (unlikely(bitmap[1] & (FATTR4_WORD1_NUMLINKS - 1U))) 3746 return -EIO; 3747 if (likely(bitmap[1] & FATTR4_WORD1_NUMLINKS)) { 3748 p = xdr_inline_decode(xdr, 4); 3749 if (unlikely(!p)) 3750 goto out_overflow; 3751 *nlink = be32_to_cpup(p); 3752 bitmap[1] &= ~FATTR4_WORD1_NUMLINKS; 3753 ret = NFS_ATTR_FATTR_NLINK; 3754 } 3755 dprintk("%s: nlink=%u\n", __func__, (unsigned int)*nlink); 3756 return ret; 3757 out_overflow: 3758 print_overflow_msg(__func__, xdr); 3759 return -EIO; 3760 } 3761 3762 static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap, 3763 const struct nfs_server *server, kuid_t *uid, 3764 struct nfs4_string *owner_name) 3765 { 3766 uint32_t len; 3767 __be32 *p; 3768 int ret = 0; 3769 3770 *uid = make_kuid(&init_user_ns, -2); 3771 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER - 1U))) 3772 return -EIO; 3773 if (likely(bitmap[1] & FATTR4_WORD1_OWNER)) { 3774 p = xdr_inline_decode(xdr, 4); 3775 if (unlikely(!p)) 3776 goto out_overflow; 3777 len = be32_to_cpup(p); 3778 p = xdr_inline_decode(xdr, len); 3779 if (unlikely(!p)) 3780 goto out_overflow; 3781 if (owner_name != NULL) { 3782 owner_name->data = kmemdup(p, len, GFP_NOWAIT); 3783 if (owner_name->data != NULL) { 3784 owner_name->len = len; 3785 ret = NFS_ATTR_FATTR_OWNER_NAME; 3786 } 3787 } else if (len < XDR_MAX_NETOBJ) { 3788 if (nfs_map_name_to_uid(server, (char *)p, len, uid) == 0) 3789 ret = NFS_ATTR_FATTR_OWNER; 3790 else 3791 dprintk("%s: nfs_map_name_to_uid failed!\n", 3792 __func__); 3793 } else 3794 dprintk("%s: name too long (%u)!\n", 3795 __func__, len); 3796 bitmap[1] &= ~FATTR4_WORD1_OWNER; 3797 } 3798 dprintk("%s: uid=%d\n", __func__, (int)from_kuid(&init_user_ns, *uid)); 3799 return ret; 3800 out_overflow: 3801 print_overflow_msg(__func__, xdr); 3802 return -EIO; 3803 } 3804 3805 static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap, 3806 const struct nfs_server *server, kgid_t *gid, 3807 struct nfs4_string *group_name) 3808 { 3809 uint32_t len; 3810 __be32 *p; 3811 int ret = 0; 3812 3813 *gid = make_kgid(&init_user_ns, -2); 3814 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER_GROUP - 1U))) 3815 return -EIO; 3816 if (likely(bitmap[1] & FATTR4_WORD1_OWNER_GROUP)) { 3817 p = xdr_inline_decode(xdr, 4); 3818 if (unlikely(!p)) 3819 goto out_overflow; 3820 len = be32_to_cpup(p); 3821 p = xdr_inline_decode(xdr, len); 3822 if (unlikely(!p)) 3823 goto out_overflow; 3824 if (group_name != NULL) { 3825 group_name->data = kmemdup(p, len, GFP_NOWAIT); 3826 if (group_name->data != NULL) { 3827 group_name->len = len; 3828 ret = NFS_ATTR_FATTR_GROUP_NAME; 3829 } 3830 } else if (len < XDR_MAX_NETOBJ) { 3831 if (nfs_map_group_to_gid(server, (char *)p, len, gid) == 0) 3832 ret = NFS_ATTR_FATTR_GROUP; 3833 else 3834 dprintk("%s: nfs_map_group_to_gid failed!\n", 3835 __func__); 3836 } else 3837 dprintk("%s: name too long (%u)!\n", 3838 __func__, len); 3839 bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP; 3840 } 3841 dprintk("%s: gid=%d\n", __func__, (int)from_kgid(&init_user_ns, *gid)); 3842 return ret; 3843 out_overflow: 3844 print_overflow_msg(__func__, xdr); 3845 return -EIO; 3846 } 3847 3848 static int decode_attr_rdev(struct xdr_stream *xdr, uint32_t *bitmap, dev_t *rdev) 3849 { 3850 uint32_t major = 0, minor = 0; 3851 __be32 *p; 3852 int ret = 0; 3853 3854 *rdev = MKDEV(0,0); 3855 if (unlikely(bitmap[1] & (FATTR4_WORD1_RAWDEV - 1U))) 3856 return -EIO; 3857 if (likely(bitmap[1] & FATTR4_WORD1_RAWDEV)) { 3858 dev_t tmp; 3859 3860 p = xdr_inline_decode(xdr, 8); 3861 if (unlikely(!p)) 3862 goto out_overflow; 3863 major = be32_to_cpup(p++); 3864 minor = be32_to_cpup(p); 3865 tmp = MKDEV(major, minor); 3866 if (MAJOR(tmp) == major && MINOR(tmp) == minor) 3867 *rdev = tmp; 3868 bitmap[1] &= ~ FATTR4_WORD1_RAWDEV; 3869 ret = NFS_ATTR_FATTR_RDEV; 3870 } 3871 dprintk("%s: rdev=(0x%x:0x%x)\n", __func__, major, minor); 3872 return ret; 3873 out_overflow: 3874 print_overflow_msg(__func__, xdr); 3875 return -EIO; 3876 } 3877 3878 static int decode_attr_space_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 3879 { 3880 __be32 *p; 3881 int status = 0; 3882 3883 *res = 0; 3884 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_AVAIL - 1U))) 3885 return -EIO; 3886 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_AVAIL)) { 3887 p = xdr_inline_decode(xdr, 8); 3888 if (unlikely(!p)) 3889 goto out_overflow; 3890 xdr_decode_hyper(p, res); 3891 bitmap[1] &= ~FATTR4_WORD1_SPACE_AVAIL; 3892 } 3893 dprintk("%s: space avail=%Lu\n", __func__, (unsigned long long)*res); 3894 return status; 3895 out_overflow: 3896 print_overflow_msg(__func__, xdr); 3897 return -EIO; 3898 } 3899 3900 static int decode_attr_space_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 3901 { 3902 __be32 *p; 3903 int status = 0; 3904 3905 *res = 0; 3906 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_FREE - 1U))) 3907 return -EIO; 3908 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_FREE)) { 3909 p = xdr_inline_decode(xdr, 8); 3910 if (unlikely(!p)) 3911 goto out_overflow; 3912 xdr_decode_hyper(p, res); 3913 bitmap[1] &= ~FATTR4_WORD1_SPACE_FREE; 3914 } 3915 dprintk("%s: space free=%Lu\n", __func__, (unsigned long long)*res); 3916 return status; 3917 out_overflow: 3918 print_overflow_msg(__func__, xdr); 3919 return -EIO; 3920 } 3921 3922 static int decode_attr_space_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 3923 { 3924 __be32 *p; 3925 int status = 0; 3926 3927 *res = 0; 3928 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_TOTAL - 1U))) 3929 return -EIO; 3930 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_TOTAL)) { 3931 p = xdr_inline_decode(xdr, 8); 3932 if (unlikely(!p)) 3933 goto out_overflow; 3934 xdr_decode_hyper(p, res); 3935 bitmap[1] &= ~FATTR4_WORD1_SPACE_TOTAL; 3936 } 3937 dprintk("%s: space total=%Lu\n", __func__, (unsigned long long)*res); 3938 return status; 3939 out_overflow: 3940 print_overflow_msg(__func__, xdr); 3941 return -EIO; 3942 } 3943 3944 static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *used) 3945 { 3946 __be32 *p; 3947 int ret = 0; 3948 3949 *used = 0; 3950 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_USED - 1U))) 3951 return -EIO; 3952 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_USED)) { 3953 p = xdr_inline_decode(xdr, 8); 3954 if (unlikely(!p)) 3955 goto out_overflow; 3956 xdr_decode_hyper(p, used); 3957 bitmap[1] &= ~FATTR4_WORD1_SPACE_USED; 3958 ret = NFS_ATTR_FATTR_SPACE_USED; 3959 } 3960 dprintk("%s: space used=%Lu\n", __func__, 3961 (unsigned long long)*used); 3962 return ret; 3963 out_overflow: 3964 print_overflow_msg(__func__, xdr); 3965 return -EIO; 3966 } 3967 3968 static int decode_attr_time(struct xdr_stream *xdr, struct timespec *time) 3969 { 3970 __be32 *p; 3971 uint64_t sec; 3972 uint32_t nsec; 3973 3974 p = xdr_inline_decode(xdr, 12); 3975 if (unlikely(!p)) 3976 goto out_overflow; 3977 p = xdr_decode_hyper(p, &sec); 3978 nsec = be32_to_cpup(p); 3979 time->tv_sec = (time_t)sec; 3980 time->tv_nsec = (long)nsec; 3981 return 0; 3982 out_overflow: 3983 print_overflow_msg(__func__, xdr); 3984 return -EIO; 3985 } 3986 3987 static int decode_attr_time_access(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time) 3988 { 3989 int status = 0; 3990 3991 time->tv_sec = 0; 3992 time->tv_nsec = 0; 3993 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_ACCESS - 1U))) 3994 return -EIO; 3995 if (likely(bitmap[1] & FATTR4_WORD1_TIME_ACCESS)) { 3996 status = decode_attr_time(xdr, time); 3997 if (status == 0) 3998 status = NFS_ATTR_FATTR_ATIME; 3999 bitmap[1] &= ~FATTR4_WORD1_TIME_ACCESS; 4000 } 4001 dprintk("%s: atime=%ld\n", __func__, (long)time->tv_sec); 4002 return status; 4003 } 4004 4005 static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time) 4006 { 4007 int status = 0; 4008 4009 time->tv_sec = 0; 4010 time->tv_nsec = 0; 4011 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_METADATA - 1U))) 4012 return -EIO; 4013 if (likely(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) { 4014 status = decode_attr_time(xdr, time); 4015 if (status == 0) 4016 status = NFS_ATTR_FATTR_CTIME; 4017 bitmap[1] &= ~FATTR4_WORD1_TIME_METADATA; 4018 } 4019 dprintk("%s: ctime=%ld\n", __func__, (long)time->tv_sec); 4020 return status; 4021 } 4022 4023 static int decode_attr_time_delta(struct xdr_stream *xdr, uint32_t *bitmap, 4024 struct timespec *time) 4025 { 4026 int status = 0; 4027 4028 time->tv_sec = 0; 4029 time->tv_nsec = 0; 4030 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_DELTA - 1U))) 4031 return -EIO; 4032 if (likely(bitmap[1] & FATTR4_WORD1_TIME_DELTA)) { 4033 status = decode_attr_time(xdr, time); 4034 bitmap[1] &= ~FATTR4_WORD1_TIME_DELTA; 4035 } 4036 dprintk("%s: time_delta=%ld %ld\n", __func__, (long)time->tv_sec, 4037 (long)time->tv_nsec); 4038 return status; 4039 } 4040 4041 static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time) 4042 { 4043 int status = 0; 4044 4045 time->tv_sec = 0; 4046 time->tv_nsec = 0; 4047 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_MODIFY - 1U))) 4048 return -EIO; 4049 if (likely(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) { 4050 status = decode_attr_time(xdr, time); 4051 if (status == 0) 4052 status = NFS_ATTR_FATTR_MTIME; 4053 bitmap[1] &= ~FATTR4_WORD1_TIME_MODIFY; 4054 } 4055 dprintk("%s: mtime=%ld\n", __func__, (long)time->tv_sec); 4056 return status; 4057 } 4058 4059 static int verify_attr_len(struct xdr_stream *xdr, unsigned int savep, uint32_t attrlen) 4060 { 4061 unsigned int attrwords = XDR_QUADLEN(attrlen); 4062 unsigned int nwords = (xdr_stream_pos(xdr) - savep) >> 2; 4063 4064 if (unlikely(attrwords != nwords)) { 4065 dprintk("%s: server returned incorrect attribute length: " 4066 "%u %c %u\n", 4067 __func__, 4068 attrwords << 2, 4069 (attrwords < nwords) ? '<' : '>', 4070 nwords << 2); 4071 return -EIO; 4072 } 4073 return 0; 4074 } 4075 4076 static int decode_change_info(struct xdr_stream *xdr, struct nfs4_change_info *cinfo) 4077 { 4078 __be32 *p; 4079 4080 p = xdr_inline_decode(xdr, 20); 4081 if (unlikely(!p)) 4082 goto out_overflow; 4083 cinfo->atomic = be32_to_cpup(p++); 4084 p = xdr_decode_hyper(p, &cinfo->before); 4085 xdr_decode_hyper(p, &cinfo->after); 4086 return 0; 4087 out_overflow: 4088 print_overflow_msg(__func__, xdr); 4089 return -EIO; 4090 } 4091 4092 static int decode_access(struct xdr_stream *xdr, u32 *supported, u32 *access) 4093 { 4094 __be32 *p; 4095 uint32_t supp, acc; 4096 int status; 4097 4098 status = decode_op_hdr(xdr, OP_ACCESS); 4099 if (status) 4100 return status; 4101 p = xdr_inline_decode(xdr, 8); 4102 if (unlikely(!p)) 4103 goto out_overflow; 4104 supp = be32_to_cpup(p++); 4105 acc = be32_to_cpup(p); 4106 *supported = supp; 4107 *access = acc; 4108 return 0; 4109 out_overflow: 4110 print_overflow_msg(__func__, xdr); 4111 return -EIO; 4112 } 4113 4114 static int decode_opaque_fixed(struct xdr_stream *xdr, void *buf, size_t len) 4115 { 4116 __be32 *p; 4117 4118 p = xdr_inline_decode(xdr, len); 4119 if (likely(p)) { 4120 memcpy(buf, p, len); 4121 return 0; 4122 } 4123 print_overflow_msg(__func__, xdr); 4124 return -EIO; 4125 } 4126 4127 static int decode_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid) 4128 { 4129 return decode_opaque_fixed(xdr, stateid, NFS4_STATEID_SIZE); 4130 } 4131 4132 static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res) 4133 { 4134 int status; 4135 4136 status = decode_op_hdr(xdr, OP_CLOSE); 4137 if (status != -EIO) 4138 nfs_increment_open_seqid(status, res->seqid); 4139 if (!status) 4140 status = decode_stateid(xdr, &res->stateid); 4141 return status; 4142 } 4143 4144 static int decode_verifier(struct xdr_stream *xdr, void *verifier) 4145 { 4146 return decode_opaque_fixed(xdr, verifier, NFS4_VERIFIER_SIZE); 4147 } 4148 4149 static int decode_write_verifier(struct xdr_stream *xdr, struct nfs_write_verifier *verifier) 4150 { 4151 return decode_opaque_fixed(xdr, verifier->data, NFS4_VERIFIER_SIZE); 4152 } 4153 4154 static int decode_commit(struct xdr_stream *xdr, struct nfs_commitres *res) 4155 { 4156 int status; 4157 4158 status = decode_op_hdr(xdr, OP_COMMIT); 4159 if (!status) 4160 status = decode_write_verifier(xdr, &res->verf->verifier); 4161 return status; 4162 } 4163 4164 static int decode_create(struct xdr_stream *xdr, struct nfs4_change_info *cinfo) 4165 { 4166 __be32 *p; 4167 uint32_t bmlen; 4168 int status; 4169 4170 status = decode_op_hdr(xdr, OP_CREATE); 4171 if (status) 4172 return status; 4173 if ((status = decode_change_info(xdr, cinfo))) 4174 return status; 4175 p = xdr_inline_decode(xdr, 4); 4176 if (unlikely(!p)) 4177 goto out_overflow; 4178 bmlen = be32_to_cpup(p); 4179 p = xdr_inline_decode(xdr, bmlen << 2); 4180 if (likely(p)) 4181 return 0; 4182 out_overflow: 4183 print_overflow_msg(__func__, xdr); 4184 return -EIO; 4185 } 4186 4187 static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_res *res) 4188 { 4189 unsigned int savep; 4190 uint32_t attrlen, bitmap[3] = {0}; 4191 int status; 4192 4193 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) 4194 goto xdr_error; 4195 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) 4196 goto xdr_error; 4197 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) 4198 goto xdr_error; 4199 if ((status = decode_attr_supported(xdr, bitmap, res->attr_bitmask)) != 0) 4200 goto xdr_error; 4201 if ((status = decode_attr_fh_expire_type(xdr, bitmap, 4202 &res->fh_expire_type)) != 0) 4203 goto xdr_error; 4204 if ((status = decode_attr_link_support(xdr, bitmap, &res->has_links)) != 0) 4205 goto xdr_error; 4206 if ((status = decode_attr_symlink_support(xdr, bitmap, &res->has_symlinks)) != 0) 4207 goto xdr_error; 4208 if ((status = decode_attr_aclsupport(xdr, bitmap, &res->acl_bitmask)) != 0) 4209 goto xdr_error; 4210 status = verify_attr_len(xdr, savep, attrlen); 4211 xdr_error: 4212 dprintk("%s: xdr returned %d!\n", __func__, -status); 4213 return status; 4214 } 4215 4216 static int decode_statfs(struct xdr_stream *xdr, struct nfs_fsstat *fsstat) 4217 { 4218 unsigned int savep; 4219 uint32_t attrlen, bitmap[3] = {0}; 4220 int status; 4221 4222 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) 4223 goto xdr_error; 4224 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) 4225 goto xdr_error; 4226 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) 4227 goto xdr_error; 4228 4229 if ((status = decode_attr_files_avail(xdr, bitmap, &fsstat->afiles)) != 0) 4230 goto xdr_error; 4231 if ((status = decode_attr_files_free(xdr, bitmap, &fsstat->ffiles)) != 0) 4232 goto xdr_error; 4233 if ((status = decode_attr_files_total(xdr, bitmap, &fsstat->tfiles)) != 0) 4234 goto xdr_error; 4235 if ((status = decode_attr_space_avail(xdr, bitmap, &fsstat->abytes)) != 0) 4236 goto xdr_error; 4237 if ((status = decode_attr_space_free(xdr, bitmap, &fsstat->fbytes)) != 0) 4238 goto xdr_error; 4239 if ((status = decode_attr_space_total(xdr, bitmap, &fsstat->tbytes)) != 0) 4240 goto xdr_error; 4241 4242 status = verify_attr_len(xdr, savep, attrlen); 4243 xdr_error: 4244 dprintk("%s: xdr returned %d!\n", __func__, -status); 4245 return status; 4246 } 4247 4248 static int decode_pathconf(struct xdr_stream *xdr, struct nfs_pathconf *pathconf) 4249 { 4250 unsigned int savep; 4251 uint32_t attrlen, bitmap[3] = {0}; 4252 int status; 4253 4254 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) 4255 goto xdr_error; 4256 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) 4257 goto xdr_error; 4258 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) 4259 goto xdr_error; 4260 4261 if ((status = decode_attr_maxlink(xdr, bitmap, &pathconf->max_link)) != 0) 4262 goto xdr_error; 4263 if ((status = decode_attr_maxname(xdr, bitmap, &pathconf->max_namelen)) != 0) 4264 goto xdr_error; 4265 4266 status = verify_attr_len(xdr, savep, attrlen); 4267 xdr_error: 4268 dprintk("%s: xdr returned %d!\n", __func__, -status); 4269 return status; 4270 } 4271 4272 static int decode_threshold_hint(struct xdr_stream *xdr, 4273 uint32_t *bitmap, 4274 uint64_t *res, 4275 uint32_t hint_bit) 4276 { 4277 __be32 *p; 4278 4279 *res = 0; 4280 if (likely(bitmap[0] & hint_bit)) { 4281 p = xdr_inline_decode(xdr, 8); 4282 if (unlikely(!p)) 4283 goto out_overflow; 4284 xdr_decode_hyper(p, res); 4285 } 4286 return 0; 4287 out_overflow: 4288 print_overflow_msg(__func__, xdr); 4289 return -EIO; 4290 } 4291 4292 static int decode_first_threshold_item4(struct xdr_stream *xdr, 4293 struct nfs4_threshold *res) 4294 { 4295 __be32 *p; 4296 unsigned int savep; 4297 uint32_t bitmap[3] = {0,}, attrlen; 4298 int status; 4299 4300 /* layout type */ 4301 p = xdr_inline_decode(xdr, 4); 4302 if (unlikely(!p)) { 4303 print_overflow_msg(__func__, xdr); 4304 return -EIO; 4305 } 4306 res->l_type = be32_to_cpup(p); 4307 4308 /* thi_hintset bitmap */ 4309 status = decode_attr_bitmap(xdr, bitmap); 4310 if (status < 0) 4311 goto xdr_error; 4312 4313 /* thi_hintlist length */ 4314 status = decode_attr_length(xdr, &attrlen, &savep); 4315 if (status < 0) 4316 goto xdr_error; 4317 /* thi_hintlist */ 4318 status = decode_threshold_hint(xdr, bitmap, &res->rd_sz, THRESHOLD_RD); 4319 if (status < 0) 4320 goto xdr_error; 4321 status = decode_threshold_hint(xdr, bitmap, &res->wr_sz, THRESHOLD_WR); 4322 if (status < 0) 4323 goto xdr_error; 4324 status = decode_threshold_hint(xdr, bitmap, &res->rd_io_sz, 4325 THRESHOLD_RD_IO); 4326 if (status < 0) 4327 goto xdr_error; 4328 status = decode_threshold_hint(xdr, bitmap, &res->wr_io_sz, 4329 THRESHOLD_WR_IO); 4330 if (status < 0) 4331 goto xdr_error; 4332 4333 status = verify_attr_len(xdr, savep, attrlen); 4334 res->bm = bitmap[0]; 4335 4336 dprintk("%s bm=0x%x rd_sz=%llu wr_sz=%llu rd_io=%llu wr_io=%llu\n", 4337 __func__, res->bm, res->rd_sz, res->wr_sz, res->rd_io_sz, 4338 res->wr_io_sz); 4339 xdr_error: 4340 dprintk("%s ret=%d!\n", __func__, status); 4341 return status; 4342 } 4343 4344 /* 4345 * Thresholds on pNFS direct I/O vrs MDS I/O 4346 */ 4347 static int decode_attr_mdsthreshold(struct xdr_stream *xdr, 4348 uint32_t *bitmap, 4349 struct nfs4_threshold *res) 4350 { 4351 __be32 *p; 4352 int status = 0; 4353 uint32_t num; 4354 4355 if (unlikely(bitmap[2] & (FATTR4_WORD2_MDSTHRESHOLD - 1U))) 4356 return -EIO; 4357 if (bitmap[2] & FATTR4_WORD2_MDSTHRESHOLD) { 4358 /* Did the server return an unrequested attribute? */ 4359 if (unlikely(res == NULL)) 4360 return -EREMOTEIO; 4361 p = xdr_inline_decode(xdr, 4); 4362 if (unlikely(!p)) 4363 goto out_overflow; 4364 num = be32_to_cpup(p); 4365 if (num == 0) 4366 return 0; 4367 if (num > 1) 4368 printk(KERN_INFO "%s: Warning: Multiple pNFS layout " 4369 "drivers per filesystem not supported\n", 4370 __func__); 4371 4372 status = decode_first_threshold_item4(xdr, res); 4373 bitmap[2] &= ~FATTR4_WORD2_MDSTHRESHOLD; 4374 } 4375 return status; 4376 out_overflow: 4377 print_overflow_msg(__func__, xdr); 4378 return -EIO; 4379 } 4380 4381 static int decode_getfattr_attrs(struct xdr_stream *xdr, uint32_t *bitmap, 4382 struct nfs_fattr *fattr, struct nfs_fh *fh, 4383 struct nfs4_fs_locations *fs_loc, 4384 const struct nfs_server *server) 4385 { 4386 int status; 4387 umode_t fmode = 0; 4388 uint32_t type; 4389 int32_t err; 4390 4391 status = decode_attr_type(xdr, bitmap, &type); 4392 if (status < 0) 4393 goto xdr_error; 4394 fattr->mode = 0; 4395 if (status != 0) { 4396 fattr->mode |= nfs_type2fmt[type]; 4397 fattr->valid |= status; 4398 } 4399 4400 status = decode_attr_change(xdr, bitmap, &fattr->change_attr); 4401 if (status < 0) 4402 goto xdr_error; 4403 fattr->valid |= status; 4404 4405 status = decode_attr_size(xdr, bitmap, &fattr->size); 4406 if (status < 0) 4407 goto xdr_error; 4408 fattr->valid |= status; 4409 4410 status = decode_attr_fsid(xdr, bitmap, &fattr->fsid); 4411 if (status < 0) 4412 goto xdr_error; 4413 fattr->valid |= status; 4414 4415 err = 0; 4416 status = decode_attr_error(xdr, bitmap, &err); 4417 if (status < 0) 4418 goto xdr_error; 4419 4420 status = decode_attr_filehandle(xdr, bitmap, fh); 4421 if (status < 0) 4422 goto xdr_error; 4423 4424 status = decode_attr_fileid(xdr, bitmap, &fattr->fileid); 4425 if (status < 0) 4426 goto xdr_error; 4427 fattr->valid |= status; 4428 4429 status = decode_attr_fs_locations(xdr, bitmap, fs_loc); 4430 if (status < 0) 4431 goto xdr_error; 4432 fattr->valid |= status; 4433 4434 status = decode_attr_mode(xdr, bitmap, &fmode); 4435 if (status < 0) 4436 goto xdr_error; 4437 if (status != 0) { 4438 fattr->mode |= fmode; 4439 fattr->valid |= status; 4440 } 4441 4442 status = decode_attr_nlink(xdr, bitmap, &fattr->nlink); 4443 if (status < 0) 4444 goto xdr_error; 4445 fattr->valid |= status; 4446 4447 status = decode_attr_owner(xdr, bitmap, server, &fattr->uid, fattr->owner_name); 4448 if (status < 0) 4449 goto xdr_error; 4450 fattr->valid |= status; 4451 4452 status = decode_attr_group(xdr, bitmap, server, &fattr->gid, fattr->group_name); 4453 if (status < 0) 4454 goto xdr_error; 4455 fattr->valid |= status; 4456 4457 status = decode_attr_rdev(xdr, bitmap, &fattr->rdev); 4458 if (status < 0) 4459 goto xdr_error; 4460 fattr->valid |= status; 4461 4462 status = decode_attr_space_used(xdr, bitmap, &fattr->du.nfs3.used); 4463 if (status < 0) 4464 goto xdr_error; 4465 fattr->valid |= status; 4466 4467 status = decode_attr_time_access(xdr, bitmap, &fattr->atime); 4468 if (status < 0) 4469 goto xdr_error; 4470 fattr->valid |= status; 4471 4472 status = decode_attr_time_metadata(xdr, bitmap, &fattr->ctime); 4473 if (status < 0) 4474 goto xdr_error; 4475 fattr->valid |= status; 4476 4477 status = decode_attr_time_modify(xdr, bitmap, &fattr->mtime); 4478 if (status < 0) 4479 goto xdr_error; 4480 fattr->valid |= status; 4481 4482 status = decode_attr_mounted_on_fileid(xdr, bitmap, &fattr->mounted_on_fileid); 4483 if (status < 0) 4484 goto xdr_error; 4485 fattr->valid |= status; 4486 4487 status = decode_attr_mdsthreshold(xdr, bitmap, fattr->mdsthreshold); 4488 if (status < 0) 4489 goto xdr_error; 4490 4491 xdr_error: 4492 dprintk("%s: xdr returned %d\n", __func__, -status); 4493 return status; 4494 } 4495 4496 static int decode_getfattr_generic(struct xdr_stream *xdr, struct nfs_fattr *fattr, 4497 struct nfs_fh *fh, struct nfs4_fs_locations *fs_loc, 4498 const struct nfs_server *server) 4499 { 4500 unsigned int savep; 4501 uint32_t attrlen, 4502 bitmap[3] = {0}; 4503 int status; 4504 4505 status = decode_op_hdr(xdr, OP_GETATTR); 4506 if (status < 0) 4507 goto xdr_error; 4508 4509 status = decode_attr_bitmap(xdr, bitmap); 4510 if (status < 0) 4511 goto xdr_error; 4512 4513 status = decode_attr_length(xdr, &attrlen, &savep); 4514 if (status < 0) 4515 goto xdr_error; 4516 4517 status = decode_getfattr_attrs(xdr, bitmap, fattr, fh, fs_loc, server); 4518 if (status < 0) 4519 goto xdr_error; 4520 4521 status = verify_attr_len(xdr, savep, attrlen); 4522 xdr_error: 4523 dprintk("%s: xdr returned %d\n", __func__, -status); 4524 return status; 4525 } 4526 4527 static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr, 4528 const struct nfs_server *server) 4529 { 4530 return decode_getfattr_generic(xdr, fattr, NULL, NULL, server); 4531 } 4532 4533 /* 4534 * Decode potentially multiple layout types. Currently we only support 4535 * one layout driver per file system. 4536 */ 4537 static int decode_first_pnfs_layout_type(struct xdr_stream *xdr, 4538 uint32_t *layouttype) 4539 { 4540 uint32_t *p; 4541 int num; 4542 4543 p = xdr_inline_decode(xdr, 4); 4544 if (unlikely(!p)) 4545 goto out_overflow; 4546 num = be32_to_cpup(p); 4547 4548 /* pNFS is not supported by the underlying file system */ 4549 if (num == 0) { 4550 *layouttype = 0; 4551 return 0; 4552 } 4553 if (num > 1) 4554 printk(KERN_INFO "NFS: %s: Warning: Multiple pNFS layout " 4555 "drivers per filesystem not supported\n", __func__); 4556 4557 /* Decode and set first layout type, move xdr->p past unused types */ 4558 p = xdr_inline_decode(xdr, num * 4); 4559 if (unlikely(!p)) 4560 goto out_overflow; 4561 *layouttype = be32_to_cpup(p); 4562 return 0; 4563 out_overflow: 4564 print_overflow_msg(__func__, xdr); 4565 return -EIO; 4566 } 4567 4568 /* 4569 * The type of file system exported. 4570 * Note we must ensure that layouttype is set in any non-error case. 4571 */ 4572 static int decode_attr_pnfstype(struct xdr_stream *xdr, uint32_t *bitmap, 4573 uint32_t *layouttype) 4574 { 4575 int status = 0; 4576 4577 dprintk("%s: bitmap is %x\n", __func__, bitmap[1]); 4578 if (unlikely(bitmap[1] & (FATTR4_WORD1_FS_LAYOUT_TYPES - 1U))) 4579 return -EIO; 4580 if (bitmap[1] & FATTR4_WORD1_FS_LAYOUT_TYPES) { 4581 status = decode_first_pnfs_layout_type(xdr, layouttype); 4582 bitmap[1] &= ~FATTR4_WORD1_FS_LAYOUT_TYPES; 4583 } else 4584 *layouttype = 0; 4585 return status; 4586 } 4587 4588 /* 4589 * The prefered block size for layout directed io 4590 */ 4591 static int decode_attr_layout_blksize(struct xdr_stream *xdr, uint32_t *bitmap, 4592 uint32_t *res) 4593 { 4594 __be32 *p; 4595 4596 dprintk("%s: bitmap is %x\n", __func__, bitmap[2]); 4597 *res = 0; 4598 if (bitmap[2] & FATTR4_WORD2_LAYOUT_BLKSIZE) { 4599 p = xdr_inline_decode(xdr, 4); 4600 if (unlikely(!p)) { 4601 print_overflow_msg(__func__, xdr); 4602 return -EIO; 4603 } 4604 *res = be32_to_cpup(p); 4605 bitmap[2] &= ~FATTR4_WORD2_LAYOUT_BLKSIZE; 4606 } 4607 return 0; 4608 } 4609 4610 static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo) 4611 { 4612 unsigned int savep; 4613 uint32_t attrlen, bitmap[3]; 4614 int status; 4615 4616 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) 4617 goto xdr_error; 4618 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) 4619 goto xdr_error; 4620 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) 4621 goto xdr_error; 4622 4623 fsinfo->rtmult = fsinfo->wtmult = 512; /* ??? */ 4624 4625 if ((status = decode_attr_lease_time(xdr, bitmap, &fsinfo->lease_time)) != 0) 4626 goto xdr_error; 4627 if ((status = decode_attr_maxfilesize(xdr, bitmap, &fsinfo->maxfilesize)) != 0) 4628 goto xdr_error; 4629 if ((status = decode_attr_maxread(xdr, bitmap, &fsinfo->rtmax)) != 0) 4630 goto xdr_error; 4631 fsinfo->rtpref = fsinfo->dtpref = fsinfo->rtmax; 4632 if ((status = decode_attr_maxwrite(xdr, bitmap, &fsinfo->wtmax)) != 0) 4633 goto xdr_error; 4634 fsinfo->wtpref = fsinfo->wtmax; 4635 status = decode_attr_time_delta(xdr, bitmap, &fsinfo->time_delta); 4636 if (status != 0) 4637 goto xdr_error; 4638 status = decode_attr_pnfstype(xdr, bitmap, &fsinfo->layouttype); 4639 if (status != 0) 4640 goto xdr_error; 4641 status = decode_attr_layout_blksize(xdr, bitmap, &fsinfo->blksize); 4642 if (status) 4643 goto xdr_error; 4644 4645 status = verify_attr_len(xdr, savep, attrlen); 4646 xdr_error: 4647 dprintk("%s: xdr returned %d!\n", __func__, -status); 4648 return status; 4649 } 4650 4651 static int decode_getfh(struct xdr_stream *xdr, struct nfs_fh *fh) 4652 { 4653 __be32 *p; 4654 uint32_t len; 4655 int status; 4656 4657 /* Zero handle first to allow comparisons */ 4658 memset(fh, 0, sizeof(*fh)); 4659 4660 status = decode_op_hdr(xdr, OP_GETFH); 4661 if (status) 4662 return status; 4663 4664 p = xdr_inline_decode(xdr, 4); 4665 if (unlikely(!p)) 4666 goto out_overflow; 4667 len = be32_to_cpup(p); 4668 if (len > NFS4_FHSIZE) 4669 return -EIO; 4670 fh->size = len; 4671 p = xdr_inline_decode(xdr, len); 4672 if (unlikely(!p)) 4673 goto out_overflow; 4674 memcpy(fh->data, p, len); 4675 return 0; 4676 out_overflow: 4677 print_overflow_msg(__func__, xdr); 4678 return -EIO; 4679 } 4680 4681 static int decode_link(struct xdr_stream *xdr, struct nfs4_change_info *cinfo) 4682 { 4683 int status; 4684 4685 status = decode_op_hdr(xdr, OP_LINK); 4686 if (status) 4687 return status; 4688 return decode_change_info(xdr, cinfo); 4689 } 4690 4691 /* 4692 * We create the owner, so we know a proper owner.id length is 4. 4693 */ 4694 static int decode_lock_denied (struct xdr_stream *xdr, struct file_lock *fl) 4695 { 4696 uint64_t offset, length, clientid; 4697 __be32 *p; 4698 uint32_t namelen, type; 4699 4700 p = xdr_inline_decode(xdr, 32); /* read 32 bytes */ 4701 if (unlikely(!p)) 4702 goto out_overflow; 4703 p = xdr_decode_hyper(p, &offset); /* read 2 8-byte long words */ 4704 p = xdr_decode_hyper(p, &length); 4705 type = be32_to_cpup(p++); /* 4 byte read */ 4706 if (fl != NULL) { /* manipulate file lock */ 4707 fl->fl_start = (loff_t)offset; 4708 fl->fl_end = fl->fl_start + (loff_t)length - 1; 4709 if (length == ~(uint64_t)0) 4710 fl->fl_end = OFFSET_MAX; 4711 fl->fl_type = F_WRLCK; 4712 if (type & 1) 4713 fl->fl_type = F_RDLCK; 4714 fl->fl_pid = 0; 4715 } 4716 p = xdr_decode_hyper(p, &clientid); /* read 8 bytes */ 4717 namelen = be32_to_cpup(p); /* read 4 bytes */ /* have read all 32 bytes now */ 4718 p = xdr_inline_decode(xdr, namelen); /* variable size field */ 4719 if (likely(p)) 4720 return -NFS4ERR_DENIED; 4721 out_overflow: 4722 print_overflow_msg(__func__, xdr); 4723 return -EIO; 4724 } 4725 4726 static int decode_lock(struct xdr_stream *xdr, struct nfs_lock_res *res) 4727 { 4728 int status; 4729 4730 status = decode_op_hdr(xdr, OP_LOCK); 4731 if (status == -EIO) 4732 goto out; 4733 if (status == 0) { 4734 status = decode_stateid(xdr, &res->stateid); 4735 if (unlikely(status)) 4736 goto out; 4737 } else if (status == -NFS4ERR_DENIED) 4738 status = decode_lock_denied(xdr, NULL); 4739 if (res->open_seqid != NULL) 4740 nfs_increment_open_seqid(status, res->open_seqid); 4741 nfs_increment_lock_seqid(status, res->lock_seqid); 4742 out: 4743 return status; 4744 } 4745 4746 static int decode_lockt(struct xdr_stream *xdr, struct nfs_lockt_res *res) 4747 { 4748 int status; 4749 status = decode_op_hdr(xdr, OP_LOCKT); 4750 if (status == -NFS4ERR_DENIED) 4751 return decode_lock_denied(xdr, res->denied); 4752 return status; 4753 } 4754 4755 static int decode_locku(struct xdr_stream *xdr, struct nfs_locku_res *res) 4756 { 4757 int status; 4758 4759 status = decode_op_hdr(xdr, OP_LOCKU); 4760 if (status != -EIO) 4761 nfs_increment_lock_seqid(status, res->seqid); 4762 if (status == 0) 4763 status = decode_stateid(xdr, &res->stateid); 4764 return status; 4765 } 4766 4767 static int decode_release_lockowner(struct xdr_stream *xdr) 4768 { 4769 return decode_op_hdr(xdr, OP_RELEASE_LOCKOWNER); 4770 } 4771 4772 static int decode_lookup(struct xdr_stream *xdr) 4773 { 4774 return decode_op_hdr(xdr, OP_LOOKUP); 4775 } 4776 4777 /* This is too sick! */ 4778 static int decode_space_limit(struct xdr_stream *xdr, u64 *maxsize) 4779 { 4780 __be32 *p; 4781 uint32_t limit_type, nblocks, blocksize; 4782 4783 p = xdr_inline_decode(xdr, 12); 4784 if (unlikely(!p)) 4785 goto out_overflow; 4786 limit_type = be32_to_cpup(p++); 4787 switch (limit_type) { 4788 case 1: 4789 xdr_decode_hyper(p, maxsize); 4790 break; 4791 case 2: 4792 nblocks = be32_to_cpup(p++); 4793 blocksize = be32_to_cpup(p); 4794 *maxsize = (uint64_t)nblocks * (uint64_t)blocksize; 4795 } 4796 return 0; 4797 out_overflow: 4798 print_overflow_msg(__func__, xdr); 4799 return -EIO; 4800 } 4801 4802 static int decode_delegation(struct xdr_stream *xdr, struct nfs_openres *res) 4803 { 4804 __be32 *p; 4805 uint32_t delegation_type; 4806 int status; 4807 4808 p = xdr_inline_decode(xdr, 4); 4809 if (unlikely(!p)) 4810 goto out_overflow; 4811 delegation_type = be32_to_cpup(p); 4812 if (delegation_type == NFS4_OPEN_DELEGATE_NONE) { 4813 res->delegation_type = 0; 4814 return 0; 4815 } 4816 status = decode_stateid(xdr, &res->delegation); 4817 if (unlikely(status)) 4818 return status; 4819 p = xdr_inline_decode(xdr, 4); 4820 if (unlikely(!p)) 4821 goto out_overflow; 4822 res->do_recall = be32_to_cpup(p); 4823 4824 switch (delegation_type) { 4825 case NFS4_OPEN_DELEGATE_READ: 4826 res->delegation_type = FMODE_READ; 4827 break; 4828 case NFS4_OPEN_DELEGATE_WRITE: 4829 res->delegation_type = FMODE_WRITE|FMODE_READ; 4830 if (decode_space_limit(xdr, &res->maxsize) < 0) 4831 return -EIO; 4832 } 4833 return decode_ace(xdr, NULL, res->server->nfs_client); 4834 out_overflow: 4835 print_overflow_msg(__func__, xdr); 4836 return -EIO; 4837 } 4838 4839 static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res) 4840 { 4841 __be32 *p; 4842 uint32_t savewords, bmlen, i; 4843 int status; 4844 4845 status = decode_op_hdr(xdr, OP_OPEN); 4846 if (status != -EIO) 4847 nfs_increment_open_seqid(status, res->seqid); 4848 if (!status) 4849 status = decode_stateid(xdr, &res->stateid); 4850 if (unlikely(status)) 4851 return status; 4852 4853 decode_change_info(xdr, &res->cinfo); 4854 4855 p = xdr_inline_decode(xdr, 8); 4856 if (unlikely(!p)) 4857 goto out_overflow; 4858 res->rflags = be32_to_cpup(p++); 4859 bmlen = be32_to_cpup(p); 4860 if (bmlen > 10) 4861 goto xdr_error; 4862 4863 p = xdr_inline_decode(xdr, bmlen << 2); 4864 if (unlikely(!p)) 4865 goto out_overflow; 4866 savewords = min_t(uint32_t, bmlen, NFS4_BITMAP_SIZE); 4867 for (i = 0; i < savewords; ++i) 4868 res->attrset[i] = be32_to_cpup(p++); 4869 for (; i < NFS4_BITMAP_SIZE; i++) 4870 res->attrset[i] = 0; 4871 4872 return decode_delegation(xdr, res); 4873 xdr_error: 4874 dprintk("%s: Bitmap too large! Length = %u\n", __func__, bmlen); 4875 return -EIO; 4876 out_overflow: 4877 print_overflow_msg(__func__, xdr); 4878 return -EIO; 4879 } 4880 4881 static int decode_open_confirm(struct xdr_stream *xdr, struct nfs_open_confirmres *res) 4882 { 4883 int status; 4884 4885 status = decode_op_hdr(xdr, OP_OPEN_CONFIRM); 4886 if (status != -EIO) 4887 nfs_increment_open_seqid(status, res->seqid); 4888 if (!status) 4889 status = decode_stateid(xdr, &res->stateid); 4890 return status; 4891 } 4892 4893 static int decode_open_downgrade(struct xdr_stream *xdr, struct nfs_closeres *res) 4894 { 4895 int status; 4896 4897 status = decode_op_hdr(xdr, OP_OPEN_DOWNGRADE); 4898 if (status != -EIO) 4899 nfs_increment_open_seqid(status, res->seqid); 4900 if (!status) 4901 status = decode_stateid(xdr, &res->stateid); 4902 return status; 4903 } 4904 4905 static int decode_putfh(struct xdr_stream *xdr) 4906 { 4907 return decode_op_hdr(xdr, OP_PUTFH); 4908 } 4909 4910 static int decode_putrootfh(struct xdr_stream *xdr) 4911 { 4912 return decode_op_hdr(xdr, OP_PUTROOTFH); 4913 } 4914 4915 static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs_readres *res) 4916 { 4917 __be32 *p; 4918 uint32_t count, eof, recvd; 4919 int status; 4920 4921 status = decode_op_hdr(xdr, OP_READ); 4922 if (status) 4923 return status; 4924 p = xdr_inline_decode(xdr, 8); 4925 if (unlikely(!p)) 4926 goto out_overflow; 4927 eof = be32_to_cpup(p++); 4928 count = be32_to_cpup(p); 4929 recvd = xdr_read_pages(xdr, count); 4930 if (count > recvd) { 4931 dprintk("NFS: server cheating in read reply: " 4932 "count %u > recvd %u\n", count, recvd); 4933 count = recvd; 4934 eof = 0; 4935 } 4936 res->eof = eof; 4937 res->count = count; 4938 return 0; 4939 out_overflow: 4940 print_overflow_msg(__func__, xdr); 4941 return -EIO; 4942 } 4943 4944 static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs4_readdir_res *readdir) 4945 { 4946 int status; 4947 __be32 verf[2]; 4948 4949 status = decode_op_hdr(xdr, OP_READDIR); 4950 if (!status) 4951 status = decode_verifier(xdr, readdir->verifier.data); 4952 if (unlikely(status)) 4953 return status; 4954 memcpy(verf, readdir->verifier.data, sizeof(verf)); 4955 dprintk("%s: verifier = %08x:%08x\n", 4956 __func__, verf[0], verf[1]); 4957 return xdr_read_pages(xdr, xdr->buf->page_len); 4958 } 4959 4960 static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req) 4961 { 4962 struct xdr_buf *rcvbuf = &req->rq_rcv_buf; 4963 u32 len, recvd; 4964 __be32 *p; 4965 int status; 4966 4967 status = decode_op_hdr(xdr, OP_READLINK); 4968 if (status) 4969 return status; 4970 4971 /* Convert length of symlink */ 4972 p = xdr_inline_decode(xdr, 4); 4973 if (unlikely(!p)) 4974 goto out_overflow; 4975 len = be32_to_cpup(p); 4976 if (len >= rcvbuf->page_len || len <= 0) { 4977 dprintk("nfs: server returned giant symlink!\n"); 4978 return -ENAMETOOLONG; 4979 } 4980 recvd = xdr_read_pages(xdr, len); 4981 if (recvd < len) { 4982 dprintk("NFS: server cheating in readlink reply: " 4983 "count %u > recvd %u\n", len, recvd); 4984 return -EIO; 4985 } 4986 /* 4987 * The XDR encode routine has set things up so that 4988 * the link text will be copied directly into the 4989 * buffer. We just have to do overflow-checking, 4990 * and and null-terminate the text (the VFS expects 4991 * null-termination). 4992 */ 4993 xdr_terminate_string(rcvbuf, len); 4994 return 0; 4995 out_overflow: 4996 print_overflow_msg(__func__, xdr); 4997 return -EIO; 4998 } 4999 5000 static int decode_remove(struct xdr_stream *xdr, struct nfs4_change_info *cinfo) 5001 { 5002 int status; 5003 5004 status = decode_op_hdr(xdr, OP_REMOVE); 5005 if (status) 5006 goto out; 5007 status = decode_change_info(xdr, cinfo); 5008 out: 5009 return status; 5010 } 5011 5012 static int decode_rename(struct xdr_stream *xdr, struct nfs4_change_info *old_cinfo, 5013 struct nfs4_change_info *new_cinfo) 5014 { 5015 int status; 5016 5017 status = decode_op_hdr(xdr, OP_RENAME); 5018 if (status) 5019 goto out; 5020 if ((status = decode_change_info(xdr, old_cinfo))) 5021 goto out; 5022 status = decode_change_info(xdr, new_cinfo); 5023 out: 5024 return status; 5025 } 5026 5027 static int decode_renew(struct xdr_stream *xdr) 5028 { 5029 return decode_op_hdr(xdr, OP_RENEW); 5030 } 5031 5032 static int 5033 decode_restorefh(struct xdr_stream *xdr) 5034 { 5035 return decode_op_hdr(xdr, OP_RESTOREFH); 5036 } 5037 5038 static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req, 5039 struct nfs_getaclres *res) 5040 { 5041 unsigned int savep; 5042 uint32_t attrlen, 5043 bitmap[3] = {0}; 5044 int status; 5045 unsigned int pg_offset; 5046 5047 res->acl_len = 0; 5048 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) 5049 goto out; 5050 5051 xdr_enter_page(xdr, xdr->buf->page_len); 5052 5053 /* Calculate the offset of the page data */ 5054 pg_offset = xdr->buf->head[0].iov_len; 5055 5056 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) 5057 goto out; 5058 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) 5059 goto out; 5060 5061 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACL - 1U))) 5062 return -EIO; 5063 if (likely(bitmap[0] & FATTR4_WORD0_ACL)) { 5064 5065 /* The bitmap (xdr len + bitmaps) and the attr xdr len words 5066 * are stored with the acl data to handle the problem of 5067 * variable length bitmaps.*/ 5068 res->acl_data_offset = xdr_stream_pos(xdr) - pg_offset; 5069 res->acl_len = attrlen; 5070 5071 /* Check for receive buffer overflow */ 5072 if (res->acl_len > (xdr->nwords << 2) || 5073 res->acl_len + res->acl_data_offset > xdr->buf->page_len) { 5074 res->acl_flags |= NFS4_ACL_TRUNC; 5075 dprintk("NFS: acl reply: attrlen %u > page_len %u\n", 5076 attrlen, xdr->nwords << 2); 5077 } 5078 } else 5079 status = -EOPNOTSUPP; 5080 5081 out: 5082 return status; 5083 } 5084 5085 static int 5086 decode_savefh(struct xdr_stream *xdr) 5087 { 5088 return decode_op_hdr(xdr, OP_SAVEFH); 5089 } 5090 5091 static int decode_setattr(struct xdr_stream *xdr) 5092 { 5093 __be32 *p; 5094 uint32_t bmlen; 5095 int status; 5096 5097 status = decode_op_hdr(xdr, OP_SETATTR); 5098 if (status) 5099 return status; 5100 p = xdr_inline_decode(xdr, 4); 5101 if (unlikely(!p)) 5102 goto out_overflow; 5103 bmlen = be32_to_cpup(p); 5104 p = xdr_inline_decode(xdr, bmlen << 2); 5105 if (likely(p)) 5106 return 0; 5107 out_overflow: 5108 print_overflow_msg(__func__, xdr); 5109 return -EIO; 5110 } 5111 5112 static int decode_setclientid(struct xdr_stream *xdr, struct nfs4_setclientid_res *res) 5113 { 5114 __be32 *p; 5115 uint32_t opnum; 5116 int32_t nfserr; 5117 5118 p = xdr_inline_decode(xdr, 8); 5119 if (unlikely(!p)) 5120 goto out_overflow; 5121 opnum = be32_to_cpup(p++); 5122 if (opnum != OP_SETCLIENTID) { 5123 dprintk("nfs: decode_setclientid: Server returned operation" 5124 " %d\n", opnum); 5125 return -EIO; 5126 } 5127 nfserr = be32_to_cpup(p); 5128 if (nfserr == NFS_OK) { 5129 p = xdr_inline_decode(xdr, 8 + NFS4_VERIFIER_SIZE); 5130 if (unlikely(!p)) 5131 goto out_overflow; 5132 p = xdr_decode_hyper(p, &res->clientid); 5133 memcpy(res->confirm.data, p, NFS4_VERIFIER_SIZE); 5134 } else if (nfserr == NFSERR_CLID_INUSE) { 5135 uint32_t len; 5136 5137 /* skip netid string */ 5138 p = xdr_inline_decode(xdr, 4); 5139 if (unlikely(!p)) 5140 goto out_overflow; 5141 len = be32_to_cpup(p); 5142 p = xdr_inline_decode(xdr, len); 5143 if (unlikely(!p)) 5144 goto out_overflow; 5145 5146 /* skip uaddr string */ 5147 p = xdr_inline_decode(xdr, 4); 5148 if (unlikely(!p)) 5149 goto out_overflow; 5150 len = be32_to_cpup(p); 5151 p = xdr_inline_decode(xdr, len); 5152 if (unlikely(!p)) 5153 goto out_overflow; 5154 return -NFSERR_CLID_INUSE; 5155 } else 5156 return nfs4_stat_to_errno(nfserr); 5157 5158 return 0; 5159 out_overflow: 5160 print_overflow_msg(__func__, xdr); 5161 return -EIO; 5162 } 5163 5164 static int decode_setclientid_confirm(struct xdr_stream *xdr) 5165 { 5166 return decode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM); 5167 } 5168 5169 static int decode_write(struct xdr_stream *xdr, struct nfs_writeres *res) 5170 { 5171 __be32 *p; 5172 int status; 5173 5174 status = decode_op_hdr(xdr, OP_WRITE); 5175 if (status) 5176 return status; 5177 5178 p = xdr_inline_decode(xdr, 8); 5179 if (unlikely(!p)) 5180 goto out_overflow; 5181 res->count = be32_to_cpup(p++); 5182 res->verf->committed = be32_to_cpup(p++); 5183 return decode_write_verifier(xdr, &res->verf->verifier); 5184 out_overflow: 5185 print_overflow_msg(__func__, xdr); 5186 return -EIO; 5187 } 5188 5189 static int decode_delegreturn(struct xdr_stream *xdr) 5190 { 5191 return decode_op_hdr(xdr, OP_DELEGRETURN); 5192 } 5193 5194 static int decode_secinfo_gss(struct xdr_stream *xdr, 5195 struct nfs4_secinfo4 *flavor) 5196 { 5197 u32 oid_len; 5198 __be32 *p; 5199 5200 p = xdr_inline_decode(xdr, 4); 5201 if (unlikely(!p)) 5202 goto out_overflow; 5203 oid_len = be32_to_cpup(p); 5204 if (oid_len > GSS_OID_MAX_LEN) 5205 goto out_err; 5206 5207 p = xdr_inline_decode(xdr, oid_len); 5208 if (unlikely(!p)) 5209 goto out_overflow; 5210 memcpy(flavor->flavor_info.oid.data, p, oid_len); 5211 flavor->flavor_info.oid.len = oid_len; 5212 5213 p = xdr_inline_decode(xdr, 8); 5214 if (unlikely(!p)) 5215 goto out_overflow; 5216 flavor->flavor_info.qop = be32_to_cpup(p++); 5217 flavor->flavor_info.service = be32_to_cpup(p); 5218 5219 return 0; 5220 5221 out_overflow: 5222 print_overflow_msg(__func__, xdr); 5223 return -EIO; 5224 out_err: 5225 return -EINVAL; 5226 } 5227 5228 static int decode_secinfo_common(struct xdr_stream *xdr, struct nfs4_secinfo_res *res) 5229 { 5230 struct nfs4_secinfo4 *sec_flavor; 5231 unsigned int i, num_flavors; 5232 int status; 5233 __be32 *p; 5234 5235 p = xdr_inline_decode(xdr, 4); 5236 if (unlikely(!p)) 5237 goto out_overflow; 5238 5239 res->flavors->num_flavors = 0; 5240 num_flavors = be32_to_cpup(p); 5241 5242 for (i = 0; i < num_flavors; i++) { 5243 sec_flavor = &res->flavors->flavors[i]; 5244 if ((char *)&sec_flavor[1] - (char *)res->flavors > PAGE_SIZE) 5245 break; 5246 5247 p = xdr_inline_decode(xdr, 4); 5248 if (unlikely(!p)) 5249 goto out_overflow; 5250 sec_flavor->flavor = be32_to_cpup(p); 5251 5252 if (sec_flavor->flavor == RPC_AUTH_GSS) { 5253 status = decode_secinfo_gss(xdr, sec_flavor); 5254 if (status) 5255 goto out; 5256 } 5257 res->flavors->num_flavors++; 5258 } 5259 5260 status = 0; 5261 out: 5262 return status; 5263 out_overflow: 5264 print_overflow_msg(__func__, xdr); 5265 return -EIO; 5266 } 5267 5268 static int decode_secinfo(struct xdr_stream *xdr, struct nfs4_secinfo_res *res) 5269 { 5270 int status = decode_op_hdr(xdr, OP_SECINFO); 5271 if (status) 5272 return status; 5273 return decode_secinfo_common(xdr, res); 5274 } 5275 5276 #if defined(CONFIG_NFS_V4_1) 5277 static int decode_secinfo_no_name(struct xdr_stream *xdr, struct nfs4_secinfo_res *res) 5278 { 5279 int status = decode_op_hdr(xdr, OP_SECINFO_NO_NAME); 5280 if (status) 5281 return status; 5282 return decode_secinfo_common(xdr, res); 5283 } 5284 5285 static int decode_exchange_id(struct xdr_stream *xdr, 5286 struct nfs41_exchange_id_res *res) 5287 { 5288 __be32 *p; 5289 uint32_t dummy; 5290 char *dummy_str; 5291 int status; 5292 uint32_t impl_id_count; 5293 5294 status = decode_op_hdr(xdr, OP_EXCHANGE_ID); 5295 if (status) 5296 return status; 5297 5298 p = xdr_inline_decode(xdr, 8); 5299 if (unlikely(!p)) 5300 goto out_overflow; 5301 xdr_decode_hyper(p, &res->clientid); 5302 p = xdr_inline_decode(xdr, 12); 5303 if (unlikely(!p)) 5304 goto out_overflow; 5305 res->seqid = be32_to_cpup(p++); 5306 res->flags = be32_to_cpup(p++); 5307 5308 /* We ask for SP4_NONE */ 5309 dummy = be32_to_cpup(p); 5310 if (dummy != SP4_NONE) 5311 return -EIO; 5312 5313 /* server_owner4.so_minor_id */ 5314 p = xdr_inline_decode(xdr, 8); 5315 if (unlikely(!p)) 5316 goto out_overflow; 5317 p = xdr_decode_hyper(p, &res->server_owner->minor_id); 5318 5319 /* server_owner4.so_major_id */ 5320 status = decode_opaque_inline(xdr, &dummy, &dummy_str); 5321 if (unlikely(status)) 5322 return status; 5323 if (unlikely(dummy > NFS4_OPAQUE_LIMIT)) 5324 return -EIO; 5325 memcpy(res->server_owner->major_id, dummy_str, dummy); 5326 res->server_owner->major_id_sz = dummy; 5327 5328 /* server_scope4 */ 5329 status = decode_opaque_inline(xdr, &dummy, &dummy_str); 5330 if (unlikely(status)) 5331 return status; 5332 if (unlikely(dummy > NFS4_OPAQUE_LIMIT)) 5333 return -EIO; 5334 memcpy(res->server_scope->server_scope, dummy_str, dummy); 5335 res->server_scope->server_scope_sz = dummy; 5336 5337 /* Implementation Id */ 5338 p = xdr_inline_decode(xdr, 4); 5339 if (unlikely(!p)) 5340 goto out_overflow; 5341 impl_id_count = be32_to_cpup(p++); 5342 5343 if (impl_id_count) { 5344 /* nii_domain */ 5345 status = decode_opaque_inline(xdr, &dummy, &dummy_str); 5346 if (unlikely(status)) 5347 return status; 5348 if (unlikely(dummy > NFS4_OPAQUE_LIMIT)) 5349 return -EIO; 5350 memcpy(res->impl_id->domain, dummy_str, dummy); 5351 5352 /* nii_name */ 5353 status = decode_opaque_inline(xdr, &dummy, &dummy_str); 5354 if (unlikely(status)) 5355 return status; 5356 if (unlikely(dummy > NFS4_OPAQUE_LIMIT)) 5357 return -EIO; 5358 memcpy(res->impl_id->name, dummy_str, dummy); 5359 5360 /* nii_date */ 5361 p = xdr_inline_decode(xdr, 12); 5362 if (unlikely(!p)) 5363 goto out_overflow; 5364 p = xdr_decode_hyper(p, &res->impl_id->date.seconds); 5365 res->impl_id->date.nseconds = be32_to_cpup(p); 5366 5367 /* if there's more than one entry, ignore the rest */ 5368 } 5369 return 0; 5370 out_overflow: 5371 print_overflow_msg(__func__, xdr); 5372 return -EIO; 5373 } 5374 5375 static int decode_chan_attrs(struct xdr_stream *xdr, 5376 struct nfs4_channel_attrs *attrs) 5377 { 5378 __be32 *p; 5379 u32 nr_attrs, val; 5380 5381 p = xdr_inline_decode(xdr, 28); 5382 if (unlikely(!p)) 5383 goto out_overflow; 5384 val = be32_to_cpup(p++); /* headerpadsz */ 5385 if (val) 5386 return -EINVAL; /* no support for header padding yet */ 5387 attrs->max_rqst_sz = be32_to_cpup(p++); 5388 attrs->max_resp_sz = be32_to_cpup(p++); 5389 attrs->max_resp_sz_cached = be32_to_cpup(p++); 5390 attrs->max_ops = be32_to_cpup(p++); 5391 attrs->max_reqs = be32_to_cpup(p++); 5392 nr_attrs = be32_to_cpup(p); 5393 if (unlikely(nr_attrs > 1)) { 5394 printk(KERN_WARNING "NFS: %s: Invalid rdma channel attrs " 5395 "count %u\n", __func__, nr_attrs); 5396 return -EINVAL; 5397 } 5398 if (nr_attrs == 1) { 5399 p = xdr_inline_decode(xdr, 4); /* skip rdma_attrs */ 5400 if (unlikely(!p)) 5401 goto out_overflow; 5402 } 5403 return 0; 5404 out_overflow: 5405 print_overflow_msg(__func__, xdr); 5406 return -EIO; 5407 } 5408 5409 static int decode_sessionid(struct xdr_stream *xdr, struct nfs4_sessionid *sid) 5410 { 5411 return decode_opaque_fixed(xdr, sid->data, NFS4_MAX_SESSIONID_LEN); 5412 } 5413 5414 static int decode_bind_conn_to_session(struct xdr_stream *xdr, 5415 struct nfs41_bind_conn_to_session_res *res) 5416 { 5417 __be32 *p; 5418 int status; 5419 5420 status = decode_op_hdr(xdr, OP_BIND_CONN_TO_SESSION); 5421 if (!status) 5422 status = decode_sessionid(xdr, &res->session->sess_id); 5423 if (unlikely(status)) 5424 return status; 5425 5426 /* dir flags, rdma mode bool */ 5427 p = xdr_inline_decode(xdr, 8); 5428 if (unlikely(!p)) 5429 goto out_overflow; 5430 5431 res->dir = be32_to_cpup(p++); 5432 if (res->dir == 0 || res->dir > NFS4_CDFS4_BOTH) 5433 return -EIO; 5434 if (be32_to_cpup(p) == 0) 5435 res->use_conn_in_rdma_mode = false; 5436 else 5437 res->use_conn_in_rdma_mode = true; 5438 5439 return 0; 5440 out_overflow: 5441 print_overflow_msg(__func__, xdr); 5442 return -EIO; 5443 } 5444 5445 static int decode_create_session(struct xdr_stream *xdr, 5446 struct nfs41_create_session_res *res) 5447 { 5448 __be32 *p; 5449 int status; 5450 struct nfs_client *clp = res->client; 5451 struct nfs4_session *session = clp->cl_session; 5452 5453 status = decode_op_hdr(xdr, OP_CREATE_SESSION); 5454 if (!status) 5455 status = decode_sessionid(xdr, &session->sess_id); 5456 if (unlikely(status)) 5457 return status; 5458 5459 /* seqid, flags */ 5460 p = xdr_inline_decode(xdr, 8); 5461 if (unlikely(!p)) 5462 goto out_overflow; 5463 clp->cl_seqid = be32_to_cpup(p++); 5464 session->flags = be32_to_cpup(p); 5465 5466 /* Channel attributes */ 5467 status = decode_chan_attrs(xdr, &session->fc_attrs); 5468 if (!status) 5469 status = decode_chan_attrs(xdr, &session->bc_attrs); 5470 return status; 5471 out_overflow: 5472 print_overflow_msg(__func__, xdr); 5473 return -EIO; 5474 } 5475 5476 static int decode_destroy_session(struct xdr_stream *xdr, void *dummy) 5477 { 5478 return decode_op_hdr(xdr, OP_DESTROY_SESSION); 5479 } 5480 5481 static int decode_destroy_clientid(struct xdr_stream *xdr, void *dummy) 5482 { 5483 return decode_op_hdr(xdr, OP_DESTROY_CLIENTID); 5484 } 5485 5486 static int decode_reclaim_complete(struct xdr_stream *xdr, void *dummy) 5487 { 5488 return decode_op_hdr(xdr, OP_RECLAIM_COMPLETE); 5489 } 5490 #endif /* CONFIG_NFS_V4_1 */ 5491 5492 static int decode_sequence(struct xdr_stream *xdr, 5493 struct nfs4_sequence_res *res, 5494 struct rpc_rqst *rqstp) 5495 { 5496 #if defined(CONFIG_NFS_V4_1) 5497 struct nfs4_session *session; 5498 struct nfs4_sessionid id; 5499 u32 dummy; 5500 int status; 5501 __be32 *p; 5502 5503 if (res->sr_slot == NULL) 5504 return 0; 5505 5506 status = decode_op_hdr(xdr, OP_SEQUENCE); 5507 if (!status) 5508 status = decode_sessionid(xdr, &id); 5509 if (unlikely(status)) 5510 goto out_err; 5511 5512 /* 5513 * If the server returns different values for sessionID, slotID or 5514 * sequence number, the server is looney tunes. 5515 */ 5516 status = -EREMOTEIO; 5517 session = res->sr_slot->table->session; 5518 5519 if (memcmp(id.data, session->sess_id.data, 5520 NFS4_MAX_SESSIONID_LEN)) { 5521 dprintk("%s Invalid session id\n", __func__); 5522 goto out_err; 5523 } 5524 5525 p = xdr_inline_decode(xdr, 20); 5526 if (unlikely(!p)) 5527 goto out_overflow; 5528 5529 /* seqid */ 5530 dummy = be32_to_cpup(p++); 5531 if (dummy != res->sr_slot->seq_nr) { 5532 dprintk("%s Invalid sequence number\n", __func__); 5533 goto out_err; 5534 } 5535 /* slot id */ 5536 dummy = be32_to_cpup(p++); 5537 if (dummy != res->sr_slot->slot_nr) { 5538 dprintk("%s Invalid slot id\n", __func__); 5539 goto out_err; 5540 } 5541 /* highest slot id */ 5542 res->sr_highest_slotid = be32_to_cpup(p++); 5543 /* target highest slot id */ 5544 res->sr_target_highest_slotid = be32_to_cpup(p++); 5545 /* result flags */ 5546 res->sr_status_flags = be32_to_cpup(p); 5547 status = 0; 5548 out_err: 5549 res->sr_status = status; 5550 return status; 5551 out_overflow: 5552 print_overflow_msg(__func__, xdr); 5553 status = -EIO; 5554 goto out_err; 5555 #else /* CONFIG_NFS_V4_1 */ 5556 return 0; 5557 #endif /* CONFIG_NFS_V4_1 */ 5558 } 5559 5560 #if defined(CONFIG_NFS_V4_1) 5561 /* 5562 * TODO: Need to handle case when EOF != true; 5563 */ 5564 static int decode_getdevicelist(struct xdr_stream *xdr, 5565 struct pnfs_devicelist *res) 5566 { 5567 __be32 *p; 5568 int status, i; 5569 nfs4_verifier verftemp; 5570 5571 status = decode_op_hdr(xdr, OP_GETDEVICELIST); 5572 if (status) 5573 return status; 5574 5575 p = xdr_inline_decode(xdr, 8 + 8 + 4); 5576 if (unlikely(!p)) 5577 goto out_overflow; 5578 5579 /* TODO: Skip cookie for now */ 5580 p += 2; 5581 5582 /* Read verifier */ 5583 p = xdr_decode_opaque_fixed(p, verftemp.data, NFS4_VERIFIER_SIZE); 5584 5585 res->num_devs = be32_to_cpup(p); 5586 5587 dprintk("%s: num_dev %d\n", __func__, res->num_devs); 5588 5589 if (res->num_devs > NFS4_PNFS_GETDEVLIST_MAXNUM) { 5590 printk(KERN_ERR "NFS: %s too many result dev_num %u\n", 5591 __func__, res->num_devs); 5592 return -EIO; 5593 } 5594 5595 p = xdr_inline_decode(xdr, 5596 res->num_devs * NFS4_DEVICEID4_SIZE + 4); 5597 if (unlikely(!p)) 5598 goto out_overflow; 5599 for (i = 0; i < res->num_devs; i++) 5600 p = xdr_decode_opaque_fixed(p, res->dev_id[i].data, 5601 NFS4_DEVICEID4_SIZE); 5602 res->eof = be32_to_cpup(p); 5603 return 0; 5604 out_overflow: 5605 print_overflow_msg(__func__, xdr); 5606 return -EIO; 5607 } 5608 5609 static int decode_getdeviceinfo(struct xdr_stream *xdr, 5610 struct pnfs_device *pdev) 5611 { 5612 __be32 *p; 5613 uint32_t len, type; 5614 int status; 5615 5616 status = decode_op_hdr(xdr, OP_GETDEVICEINFO); 5617 if (status) { 5618 if (status == -ETOOSMALL) { 5619 p = xdr_inline_decode(xdr, 4); 5620 if (unlikely(!p)) 5621 goto out_overflow; 5622 pdev->mincount = be32_to_cpup(p); 5623 dprintk("%s: Min count too small. mincnt = %u\n", 5624 __func__, pdev->mincount); 5625 } 5626 return status; 5627 } 5628 5629 p = xdr_inline_decode(xdr, 8); 5630 if (unlikely(!p)) 5631 goto out_overflow; 5632 type = be32_to_cpup(p++); 5633 if (type != pdev->layout_type) { 5634 dprintk("%s: layout mismatch req: %u pdev: %u\n", 5635 __func__, pdev->layout_type, type); 5636 return -EINVAL; 5637 } 5638 /* 5639 * Get the length of the opaque device_addr4. xdr_read_pages places 5640 * the opaque device_addr4 in the xdr_buf->pages (pnfs_device->pages) 5641 * and places the remaining xdr data in xdr_buf->tail 5642 */ 5643 pdev->mincount = be32_to_cpup(p); 5644 if (xdr_read_pages(xdr, pdev->mincount) != pdev->mincount) 5645 goto out_overflow; 5646 5647 /* Parse notification bitmap, verifying that it is zero. */ 5648 p = xdr_inline_decode(xdr, 4); 5649 if (unlikely(!p)) 5650 goto out_overflow; 5651 len = be32_to_cpup(p); 5652 if (len) { 5653 uint32_t i; 5654 5655 p = xdr_inline_decode(xdr, 4 * len); 5656 if (unlikely(!p)) 5657 goto out_overflow; 5658 for (i = 0; i < len; i++, p++) { 5659 if (be32_to_cpup(p)) { 5660 dprintk("%s: notifications not supported\n", 5661 __func__); 5662 return -EIO; 5663 } 5664 } 5665 } 5666 return 0; 5667 out_overflow: 5668 print_overflow_msg(__func__, xdr); 5669 return -EIO; 5670 } 5671 5672 static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req, 5673 struct nfs4_layoutget_res *res) 5674 { 5675 __be32 *p; 5676 int status; 5677 u32 layout_count; 5678 u32 recvd; 5679 5680 status = decode_op_hdr(xdr, OP_LAYOUTGET); 5681 if (status) 5682 return status; 5683 p = xdr_inline_decode(xdr, 4); 5684 if (unlikely(!p)) 5685 goto out_overflow; 5686 res->return_on_close = be32_to_cpup(p); 5687 decode_stateid(xdr, &res->stateid); 5688 p = xdr_inline_decode(xdr, 4); 5689 if (unlikely(!p)) 5690 goto out_overflow; 5691 layout_count = be32_to_cpup(p); 5692 if (!layout_count) { 5693 dprintk("%s: server responded with empty layout array\n", 5694 __func__); 5695 return -EINVAL; 5696 } 5697 5698 p = xdr_inline_decode(xdr, 28); 5699 if (unlikely(!p)) 5700 goto out_overflow; 5701 p = xdr_decode_hyper(p, &res->range.offset); 5702 p = xdr_decode_hyper(p, &res->range.length); 5703 res->range.iomode = be32_to_cpup(p++); 5704 res->type = be32_to_cpup(p++); 5705 res->layoutp->len = be32_to_cpup(p); 5706 5707 dprintk("%s roff:%lu rlen:%lu riomode:%d, lo_type:0x%x, lo.len:%d\n", 5708 __func__, 5709 (unsigned long)res->range.offset, 5710 (unsigned long)res->range.length, 5711 res->range.iomode, 5712 res->type, 5713 res->layoutp->len); 5714 5715 recvd = xdr_read_pages(xdr, res->layoutp->len); 5716 if (res->layoutp->len > recvd) { 5717 dprintk("NFS: server cheating in layoutget reply: " 5718 "layout len %u > recvd %u\n", 5719 res->layoutp->len, recvd); 5720 return -EINVAL; 5721 } 5722 5723 if (layout_count > 1) { 5724 /* We only handle a length one array at the moment. Any 5725 * further entries are just ignored. Note that this means 5726 * the client may see a response that is less than the 5727 * minimum it requested. 5728 */ 5729 dprintk("%s: server responded with %d layouts, dropping tail\n", 5730 __func__, layout_count); 5731 } 5732 5733 return 0; 5734 out_overflow: 5735 print_overflow_msg(__func__, xdr); 5736 return -EIO; 5737 } 5738 5739 static int decode_layoutreturn(struct xdr_stream *xdr, 5740 struct nfs4_layoutreturn_res *res) 5741 { 5742 __be32 *p; 5743 int status; 5744 5745 status = decode_op_hdr(xdr, OP_LAYOUTRETURN); 5746 if (status) 5747 return status; 5748 p = xdr_inline_decode(xdr, 4); 5749 if (unlikely(!p)) 5750 goto out_overflow; 5751 res->lrs_present = be32_to_cpup(p); 5752 if (res->lrs_present) 5753 status = decode_stateid(xdr, &res->stateid); 5754 return status; 5755 out_overflow: 5756 print_overflow_msg(__func__, xdr); 5757 return -EIO; 5758 } 5759 5760 static int decode_layoutcommit(struct xdr_stream *xdr, 5761 struct rpc_rqst *req, 5762 struct nfs4_layoutcommit_res *res) 5763 { 5764 __be32 *p; 5765 __u32 sizechanged; 5766 int status; 5767 5768 status = decode_op_hdr(xdr, OP_LAYOUTCOMMIT); 5769 res->status = status; 5770 if (status) 5771 return status; 5772 5773 p = xdr_inline_decode(xdr, 4); 5774 if (unlikely(!p)) 5775 goto out_overflow; 5776 sizechanged = be32_to_cpup(p); 5777 5778 if (sizechanged) { 5779 /* throw away new size */ 5780 p = xdr_inline_decode(xdr, 8); 5781 if (unlikely(!p)) 5782 goto out_overflow; 5783 } 5784 return 0; 5785 out_overflow: 5786 print_overflow_msg(__func__, xdr); 5787 return -EIO; 5788 } 5789 5790 static int decode_test_stateid(struct xdr_stream *xdr, 5791 struct nfs41_test_stateid_res *res) 5792 { 5793 __be32 *p; 5794 int status; 5795 int num_res; 5796 5797 status = decode_op_hdr(xdr, OP_TEST_STATEID); 5798 if (status) 5799 return status; 5800 5801 p = xdr_inline_decode(xdr, 4); 5802 if (unlikely(!p)) 5803 goto out_overflow; 5804 num_res = be32_to_cpup(p++); 5805 if (num_res != 1) 5806 goto out; 5807 5808 p = xdr_inline_decode(xdr, 4); 5809 if (unlikely(!p)) 5810 goto out_overflow; 5811 res->status = be32_to_cpup(p++); 5812 5813 return status; 5814 out_overflow: 5815 print_overflow_msg(__func__, xdr); 5816 out: 5817 return -EIO; 5818 } 5819 5820 static int decode_free_stateid(struct xdr_stream *xdr, 5821 struct nfs41_free_stateid_res *res) 5822 { 5823 __be32 *p; 5824 int status; 5825 5826 status = decode_op_hdr(xdr, OP_FREE_STATEID); 5827 if (status) 5828 return status; 5829 5830 p = xdr_inline_decode(xdr, 4); 5831 if (unlikely(!p)) 5832 goto out_overflow; 5833 res->status = be32_to_cpup(p++); 5834 return res->status; 5835 out_overflow: 5836 print_overflow_msg(__func__, xdr); 5837 return -EIO; 5838 } 5839 #endif /* CONFIG_NFS_V4_1 */ 5840 5841 /* 5842 * END OF "GENERIC" DECODE ROUTINES. 5843 */ 5844 5845 /* 5846 * Decode OPEN_DOWNGRADE response 5847 */ 5848 static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp, 5849 struct xdr_stream *xdr, 5850 struct nfs_closeres *res) 5851 { 5852 struct compound_hdr hdr; 5853 int status; 5854 5855 status = decode_compound_hdr(xdr, &hdr); 5856 if (status) 5857 goto out; 5858 status = decode_sequence(xdr, &res->seq_res, rqstp); 5859 if (status) 5860 goto out; 5861 status = decode_putfh(xdr); 5862 if (status) 5863 goto out; 5864 status = decode_open_downgrade(xdr, res); 5865 if (status != 0) 5866 goto out; 5867 decode_getfattr(xdr, res->fattr, res->server); 5868 out: 5869 return status; 5870 } 5871 5872 /* 5873 * Decode ACCESS response 5874 */ 5875 static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 5876 struct nfs4_accessres *res) 5877 { 5878 struct compound_hdr hdr; 5879 int status; 5880 5881 status = decode_compound_hdr(xdr, &hdr); 5882 if (status) 5883 goto out; 5884 status = decode_sequence(xdr, &res->seq_res, rqstp); 5885 if (status) 5886 goto out; 5887 status = decode_putfh(xdr); 5888 if (status != 0) 5889 goto out; 5890 status = decode_access(xdr, &res->supported, &res->access); 5891 if (status != 0) 5892 goto out; 5893 decode_getfattr(xdr, res->fattr, res->server); 5894 out: 5895 return status; 5896 } 5897 5898 /* 5899 * Decode LOOKUP response 5900 */ 5901 static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 5902 struct nfs4_lookup_res *res) 5903 { 5904 struct compound_hdr hdr; 5905 int status; 5906 5907 status = decode_compound_hdr(xdr, &hdr); 5908 if (status) 5909 goto out; 5910 status = decode_sequence(xdr, &res->seq_res, rqstp); 5911 if (status) 5912 goto out; 5913 status = decode_putfh(xdr); 5914 if (status) 5915 goto out; 5916 status = decode_lookup(xdr); 5917 if (status) 5918 goto out; 5919 status = decode_getfh(xdr, res->fh); 5920 if (status) 5921 goto out; 5922 status = decode_getfattr(xdr, res->fattr, res->server); 5923 out: 5924 return status; 5925 } 5926 5927 /* 5928 * Decode LOOKUP_ROOT response 5929 */ 5930 static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp, 5931 struct xdr_stream *xdr, 5932 struct nfs4_lookup_res *res) 5933 { 5934 struct compound_hdr hdr; 5935 int status; 5936 5937 status = decode_compound_hdr(xdr, &hdr); 5938 if (status) 5939 goto out; 5940 status = decode_sequence(xdr, &res->seq_res, rqstp); 5941 if (status) 5942 goto out; 5943 status = decode_putrootfh(xdr); 5944 if (status) 5945 goto out; 5946 status = decode_getfh(xdr, res->fh); 5947 if (status == 0) 5948 status = decode_getfattr(xdr, res->fattr, res->server); 5949 out: 5950 return status; 5951 } 5952 5953 /* 5954 * Decode REMOVE response 5955 */ 5956 static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 5957 struct nfs_removeres *res) 5958 { 5959 struct compound_hdr hdr; 5960 int status; 5961 5962 status = decode_compound_hdr(xdr, &hdr); 5963 if (status) 5964 goto out; 5965 status = decode_sequence(xdr, &res->seq_res, rqstp); 5966 if (status) 5967 goto out; 5968 status = decode_putfh(xdr); 5969 if (status) 5970 goto out; 5971 status = decode_remove(xdr, &res->cinfo); 5972 out: 5973 return status; 5974 } 5975 5976 /* 5977 * Decode RENAME response 5978 */ 5979 static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 5980 struct nfs_renameres *res) 5981 { 5982 struct compound_hdr hdr; 5983 int status; 5984 5985 status = decode_compound_hdr(xdr, &hdr); 5986 if (status) 5987 goto out; 5988 status = decode_sequence(xdr, &res->seq_res, rqstp); 5989 if (status) 5990 goto out; 5991 status = decode_putfh(xdr); 5992 if (status) 5993 goto out; 5994 status = decode_savefh(xdr); 5995 if (status) 5996 goto out; 5997 status = decode_putfh(xdr); 5998 if (status) 5999 goto out; 6000 status = decode_rename(xdr, &res->old_cinfo, &res->new_cinfo); 6001 out: 6002 return status; 6003 } 6004 6005 /* 6006 * Decode LINK response 6007 */ 6008 static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6009 struct nfs4_link_res *res) 6010 { 6011 struct compound_hdr hdr; 6012 int status; 6013 6014 status = decode_compound_hdr(xdr, &hdr); 6015 if (status) 6016 goto out; 6017 status = decode_sequence(xdr, &res->seq_res, rqstp); 6018 if (status) 6019 goto out; 6020 status = decode_putfh(xdr); 6021 if (status) 6022 goto out; 6023 status = decode_savefh(xdr); 6024 if (status) 6025 goto out; 6026 status = decode_putfh(xdr); 6027 if (status) 6028 goto out; 6029 status = decode_link(xdr, &res->cinfo); 6030 if (status) 6031 goto out; 6032 /* 6033 * Note order: OP_LINK leaves the directory as the current 6034 * filehandle. 6035 */ 6036 status = decode_restorefh(xdr); 6037 if (status) 6038 goto out; 6039 decode_getfattr(xdr, res->fattr, res->server); 6040 out: 6041 return status; 6042 } 6043 6044 /* 6045 * Decode CREATE response 6046 */ 6047 static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6048 struct nfs4_create_res *res) 6049 { 6050 struct compound_hdr hdr; 6051 int status; 6052 6053 status = decode_compound_hdr(xdr, &hdr); 6054 if (status) 6055 goto out; 6056 status = decode_sequence(xdr, &res->seq_res, rqstp); 6057 if (status) 6058 goto out; 6059 status = decode_putfh(xdr); 6060 if (status) 6061 goto out; 6062 status = decode_create(xdr, &res->dir_cinfo); 6063 if (status) 6064 goto out; 6065 status = decode_getfh(xdr, res->fh); 6066 if (status) 6067 goto out; 6068 decode_getfattr(xdr, res->fattr, res->server); 6069 out: 6070 return status; 6071 } 6072 6073 /* 6074 * Decode SYMLINK response 6075 */ 6076 static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6077 struct nfs4_create_res *res) 6078 { 6079 return nfs4_xdr_dec_create(rqstp, xdr, res); 6080 } 6081 6082 /* 6083 * Decode GETATTR response 6084 */ 6085 static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6086 struct nfs4_getattr_res *res) 6087 { 6088 struct compound_hdr hdr; 6089 int status; 6090 6091 status = decode_compound_hdr(xdr, &hdr); 6092 if (status) 6093 goto out; 6094 status = decode_sequence(xdr, &res->seq_res, rqstp); 6095 if (status) 6096 goto out; 6097 status = decode_putfh(xdr); 6098 if (status) 6099 goto out; 6100 status = decode_getfattr(xdr, res->fattr, res->server); 6101 out: 6102 return status; 6103 } 6104 6105 /* 6106 * Encode an SETACL request 6107 */ 6108 static void nfs4_xdr_enc_setacl(struct rpc_rqst *req, struct xdr_stream *xdr, 6109 struct nfs_setaclargs *args) 6110 { 6111 struct compound_hdr hdr = { 6112 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 6113 }; 6114 6115 encode_compound_hdr(xdr, req, &hdr); 6116 encode_sequence(xdr, &args->seq_args, &hdr); 6117 encode_putfh(xdr, args->fh, &hdr); 6118 encode_setacl(xdr, args, &hdr); 6119 encode_nops(&hdr); 6120 } 6121 6122 /* 6123 * Decode SETACL response 6124 */ 6125 static int 6126 nfs4_xdr_dec_setacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6127 struct nfs_setaclres *res) 6128 { 6129 struct compound_hdr hdr; 6130 int status; 6131 6132 status = decode_compound_hdr(xdr, &hdr); 6133 if (status) 6134 goto out; 6135 status = decode_sequence(xdr, &res->seq_res, rqstp); 6136 if (status) 6137 goto out; 6138 status = decode_putfh(xdr); 6139 if (status) 6140 goto out; 6141 status = decode_setattr(xdr); 6142 out: 6143 return status; 6144 } 6145 6146 /* 6147 * Decode GETACL response 6148 */ 6149 static int 6150 nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6151 struct nfs_getaclres *res) 6152 { 6153 struct compound_hdr hdr; 6154 int status; 6155 6156 if (res->acl_scratch != NULL) { 6157 void *p = page_address(res->acl_scratch); 6158 xdr_set_scratch_buffer(xdr, p, PAGE_SIZE); 6159 } 6160 status = decode_compound_hdr(xdr, &hdr); 6161 if (status) 6162 goto out; 6163 status = decode_sequence(xdr, &res->seq_res, rqstp); 6164 if (status) 6165 goto out; 6166 status = decode_putfh(xdr); 6167 if (status) 6168 goto out; 6169 status = decode_getacl(xdr, rqstp, res); 6170 6171 out: 6172 return status; 6173 } 6174 6175 /* 6176 * Decode CLOSE response 6177 */ 6178 static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6179 struct nfs_closeres *res) 6180 { 6181 struct compound_hdr hdr; 6182 int status; 6183 6184 status = decode_compound_hdr(xdr, &hdr); 6185 if (status) 6186 goto out; 6187 status = decode_sequence(xdr, &res->seq_res, rqstp); 6188 if (status) 6189 goto out; 6190 status = decode_putfh(xdr); 6191 if (status) 6192 goto out; 6193 status = decode_close(xdr, res); 6194 if (status != 0) 6195 goto out; 6196 /* 6197 * Note: Server may do delete on close for this file 6198 * in which case the getattr call will fail with 6199 * an ESTALE error. Shouldn't be a problem, 6200 * though, since fattr->valid will remain unset. 6201 */ 6202 decode_getfattr(xdr, res->fattr, res->server); 6203 out: 6204 return status; 6205 } 6206 6207 /* 6208 * Decode OPEN response 6209 */ 6210 static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6211 struct nfs_openres *res) 6212 { 6213 struct compound_hdr hdr; 6214 int status; 6215 6216 status = decode_compound_hdr(xdr, &hdr); 6217 if (status) 6218 goto out; 6219 status = decode_sequence(xdr, &res->seq_res, rqstp); 6220 if (status) 6221 goto out; 6222 status = decode_putfh(xdr); 6223 if (status) 6224 goto out; 6225 status = decode_open(xdr, res); 6226 if (status) 6227 goto out; 6228 status = decode_getfh(xdr, &res->fh); 6229 if (status) 6230 goto out; 6231 if (res->access_request) 6232 decode_access(xdr, &res->access_supported, &res->access_result); 6233 decode_getfattr(xdr, res->f_attr, res->server); 6234 out: 6235 return status; 6236 } 6237 6238 /* 6239 * Decode OPEN_CONFIRM response 6240 */ 6241 static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp, 6242 struct xdr_stream *xdr, 6243 struct nfs_open_confirmres *res) 6244 { 6245 struct compound_hdr hdr; 6246 int status; 6247 6248 status = decode_compound_hdr(xdr, &hdr); 6249 if (status) 6250 goto out; 6251 status = decode_putfh(xdr); 6252 if (status) 6253 goto out; 6254 status = decode_open_confirm(xdr, res); 6255 out: 6256 return status; 6257 } 6258 6259 /* 6260 * Decode OPEN response 6261 */ 6262 static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp, 6263 struct xdr_stream *xdr, 6264 struct nfs_openres *res) 6265 { 6266 struct compound_hdr hdr; 6267 int status; 6268 6269 status = decode_compound_hdr(xdr, &hdr); 6270 if (status) 6271 goto out; 6272 status = decode_sequence(xdr, &res->seq_res, rqstp); 6273 if (status) 6274 goto out; 6275 status = decode_putfh(xdr); 6276 if (status) 6277 goto out; 6278 status = decode_open(xdr, res); 6279 if (status) 6280 goto out; 6281 if (res->access_request) 6282 decode_access(xdr, &res->access_supported, &res->access_result); 6283 decode_getfattr(xdr, res->f_attr, res->server); 6284 out: 6285 return status; 6286 } 6287 6288 /* 6289 * Decode SETATTR response 6290 */ 6291 static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp, 6292 struct xdr_stream *xdr, 6293 struct nfs_setattrres *res) 6294 { 6295 struct compound_hdr hdr; 6296 int status; 6297 6298 status = decode_compound_hdr(xdr, &hdr); 6299 if (status) 6300 goto out; 6301 status = decode_sequence(xdr, &res->seq_res, rqstp); 6302 if (status) 6303 goto out; 6304 status = decode_putfh(xdr); 6305 if (status) 6306 goto out; 6307 status = decode_setattr(xdr); 6308 if (status) 6309 goto out; 6310 decode_getfattr(xdr, res->fattr, res->server); 6311 out: 6312 return status; 6313 } 6314 6315 /* 6316 * Decode LOCK response 6317 */ 6318 static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6319 struct nfs_lock_res *res) 6320 { 6321 struct compound_hdr hdr; 6322 int status; 6323 6324 status = decode_compound_hdr(xdr, &hdr); 6325 if (status) 6326 goto out; 6327 status = decode_sequence(xdr, &res->seq_res, rqstp); 6328 if (status) 6329 goto out; 6330 status = decode_putfh(xdr); 6331 if (status) 6332 goto out; 6333 status = decode_lock(xdr, res); 6334 out: 6335 return status; 6336 } 6337 6338 /* 6339 * Decode LOCKT response 6340 */ 6341 static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6342 struct nfs_lockt_res *res) 6343 { 6344 struct compound_hdr hdr; 6345 int status; 6346 6347 status = decode_compound_hdr(xdr, &hdr); 6348 if (status) 6349 goto out; 6350 status = decode_sequence(xdr, &res->seq_res, rqstp); 6351 if (status) 6352 goto out; 6353 status = decode_putfh(xdr); 6354 if (status) 6355 goto out; 6356 status = decode_lockt(xdr, res); 6357 out: 6358 return status; 6359 } 6360 6361 /* 6362 * Decode LOCKU response 6363 */ 6364 static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6365 struct nfs_locku_res *res) 6366 { 6367 struct compound_hdr hdr; 6368 int status; 6369 6370 status = decode_compound_hdr(xdr, &hdr); 6371 if (status) 6372 goto out; 6373 status = decode_sequence(xdr, &res->seq_res, rqstp); 6374 if (status) 6375 goto out; 6376 status = decode_putfh(xdr); 6377 if (status) 6378 goto out; 6379 status = decode_locku(xdr, res); 6380 out: 6381 return status; 6382 } 6383 6384 static int nfs4_xdr_dec_release_lockowner(struct rpc_rqst *rqstp, 6385 struct xdr_stream *xdr, void *dummy) 6386 { 6387 struct compound_hdr hdr; 6388 int status; 6389 6390 status = decode_compound_hdr(xdr, &hdr); 6391 if (!status) 6392 status = decode_release_lockowner(xdr); 6393 return status; 6394 } 6395 6396 /* 6397 * Decode READLINK response 6398 */ 6399 static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp, 6400 struct xdr_stream *xdr, 6401 struct nfs4_readlink_res *res) 6402 { 6403 struct compound_hdr hdr; 6404 int status; 6405 6406 status = decode_compound_hdr(xdr, &hdr); 6407 if (status) 6408 goto out; 6409 status = decode_sequence(xdr, &res->seq_res, rqstp); 6410 if (status) 6411 goto out; 6412 status = decode_putfh(xdr); 6413 if (status) 6414 goto out; 6415 status = decode_readlink(xdr, rqstp); 6416 out: 6417 return status; 6418 } 6419 6420 /* 6421 * Decode READDIR response 6422 */ 6423 static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6424 struct nfs4_readdir_res *res) 6425 { 6426 struct compound_hdr hdr; 6427 int status; 6428 6429 status = decode_compound_hdr(xdr, &hdr); 6430 if (status) 6431 goto out; 6432 status = decode_sequence(xdr, &res->seq_res, rqstp); 6433 if (status) 6434 goto out; 6435 status = decode_putfh(xdr); 6436 if (status) 6437 goto out; 6438 status = decode_readdir(xdr, rqstp, res); 6439 out: 6440 return status; 6441 } 6442 6443 /* 6444 * Decode Read response 6445 */ 6446 static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6447 struct nfs_readres *res) 6448 { 6449 struct compound_hdr hdr; 6450 int status; 6451 6452 status = decode_compound_hdr(xdr, &hdr); 6453 if (status) 6454 goto out; 6455 status = decode_sequence(xdr, &res->seq_res, rqstp); 6456 if (status) 6457 goto out; 6458 status = decode_putfh(xdr); 6459 if (status) 6460 goto out; 6461 status = decode_read(xdr, rqstp, res); 6462 if (!status) 6463 status = res->count; 6464 out: 6465 return status; 6466 } 6467 6468 /* 6469 * Decode WRITE response 6470 */ 6471 static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6472 struct nfs_writeres *res) 6473 { 6474 struct compound_hdr hdr; 6475 int status; 6476 6477 status = decode_compound_hdr(xdr, &hdr); 6478 if (status) 6479 goto out; 6480 status = decode_sequence(xdr, &res->seq_res, rqstp); 6481 if (status) 6482 goto out; 6483 status = decode_putfh(xdr); 6484 if (status) 6485 goto out; 6486 status = decode_write(xdr, res); 6487 if (status) 6488 goto out; 6489 if (res->fattr) 6490 decode_getfattr(xdr, res->fattr, res->server); 6491 if (!status) 6492 status = res->count; 6493 out: 6494 return status; 6495 } 6496 6497 /* 6498 * Decode COMMIT response 6499 */ 6500 static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6501 struct nfs_commitres *res) 6502 { 6503 struct compound_hdr hdr; 6504 int status; 6505 6506 status = decode_compound_hdr(xdr, &hdr); 6507 if (status) 6508 goto out; 6509 status = decode_sequence(xdr, &res->seq_res, rqstp); 6510 if (status) 6511 goto out; 6512 status = decode_putfh(xdr); 6513 if (status) 6514 goto out; 6515 status = decode_commit(xdr, res); 6516 out: 6517 return status; 6518 } 6519 6520 /* 6521 * Decode FSINFO response 6522 */ 6523 static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr, 6524 struct nfs4_fsinfo_res *res) 6525 { 6526 struct compound_hdr hdr; 6527 int status; 6528 6529 status = decode_compound_hdr(xdr, &hdr); 6530 if (!status) 6531 status = decode_sequence(xdr, &res->seq_res, req); 6532 if (!status) 6533 status = decode_putfh(xdr); 6534 if (!status) 6535 status = decode_fsinfo(xdr, res->fsinfo); 6536 return status; 6537 } 6538 6539 /* 6540 * Decode PATHCONF response 6541 */ 6542 static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr, 6543 struct nfs4_pathconf_res *res) 6544 { 6545 struct compound_hdr hdr; 6546 int status; 6547 6548 status = decode_compound_hdr(xdr, &hdr); 6549 if (!status) 6550 status = decode_sequence(xdr, &res->seq_res, req); 6551 if (!status) 6552 status = decode_putfh(xdr); 6553 if (!status) 6554 status = decode_pathconf(xdr, res->pathconf); 6555 return status; 6556 } 6557 6558 /* 6559 * Decode STATFS response 6560 */ 6561 static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, struct xdr_stream *xdr, 6562 struct nfs4_statfs_res *res) 6563 { 6564 struct compound_hdr hdr; 6565 int status; 6566 6567 status = decode_compound_hdr(xdr, &hdr); 6568 if (!status) 6569 status = decode_sequence(xdr, &res->seq_res, req); 6570 if (!status) 6571 status = decode_putfh(xdr); 6572 if (!status) 6573 status = decode_statfs(xdr, res->fsstat); 6574 return status; 6575 } 6576 6577 /* 6578 * Decode GETATTR_BITMAP response 6579 */ 6580 static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req, 6581 struct xdr_stream *xdr, 6582 struct nfs4_server_caps_res *res) 6583 { 6584 struct compound_hdr hdr; 6585 int status; 6586 6587 status = decode_compound_hdr(xdr, &hdr); 6588 if (status) 6589 goto out; 6590 status = decode_sequence(xdr, &res->seq_res, req); 6591 if (status) 6592 goto out; 6593 status = decode_putfh(xdr); 6594 if (status) 6595 goto out; 6596 status = decode_server_caps(xdr, res); 6597 out: 6598 return status; 6599 } 6600 6601 /* 6602 * Decode RENEW response 6603 */ 6604 static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6605 void *__unused) 6606 { 6607 struct compound_hdr hdr; 6608 int status; 6609 6610 status = decode_compound_hdr(xdr, &hdr); 6611 if (!status) 6612 status = decode_renew(xdr); 6613 return status; 6614 } 6615 6616 /* 6617 * Decode SETCLIENTID response 6618 */ 6619 static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req, 6620 struct xdr_stream *xdr, 6621 struct nfs4_setclientid_res *res) 6622 { 6623 struct compound_hdr hdr; 6624 int status; 6625 6626 status = decode_compound_hdr(xdr, &hdr); 6627 if (!status) 6628 status = decode_setclientid(xdr, res); 6629 return status; 6630 } 6631 6632 /* 6633 * Decode SETCLIENTID_CONFIRM response 6634 */ 6635 static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req, 6636 struct xdr_stream *xdr) 6637 { 6638 struct compound_hdr hdr; 6639 int status; 6640 6641 status = decode_compound_hdr(xdr, &hdr); 6642 if (!status) 6643 status = decode_setclientid_confirm(xdr); 6644 return status; 6645 } 6646 6647 /* 6648 * Decode DELEGRETURN response 6649 */ 6650 static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp, 6651 struct xdr_stream *xdr, 6652 struct nfs4_delegreturnres *res) 6653 { 6654 struct compound_hdr hdr; 6655 int status; 6656 6657 status = decode_compound_hdr(xdr, &hdr); 6658 if (status) 6659 goto out; 6660 status = decode_sequence(xdr, &res->seq_res, rqstp); 6661 if (status) 6662 goto out; 6663 status = decode_putfh(xdr); 6664 if (status != 0) 6665 goto out; 6666 status = decode_getfattr(xdr, res->fattr, res->server); 6667 if (status != 0) 6668 goto out; 6669 status = decode_delegreturn(xdr); 6670 out: 6671 return status; 6672 } 6673 6674 /* 6675 * Decode FS_LOCATIONS response 6676 */ 6677 static int nfs4_xdr_dec_fs_locations(struct rpc_rqst *req, 6678 struct xdr_stream *xdr, 6679 struct nfs4_fs_locations_res *res) 6680 { 6681 struct compound_hdr hdr; 6682 int status; 6683 6684 status = decode_compound_hdr(xdr, &hdr); 6685 if (status) 6686 goto out; 6687 status = decode_sequence(xdr, &res->seq_res, req); 6688 if (status) 6689 goto out; 6690 status = decode_putfh(xdr); 6691 if (status) 6692 goto out; 6693 status = decode_lookup(xdr); 6694 if (status) 6695 goto out; 6696 xdr_enter_page(xdr, PAGE_SIZE); 6697 status = decode_getfattr_generic(xdr, &res->fs_locations->fattr, 6698 NULL, res->fs_locations, 6699 res->fs_locations->server); 6700 out: 6701 return status; 6702 } 6703 6704 /* 6705 * Decode SECINFO response 6706 */ 6707 static int nfs4_xdr_dec_secinfo(struct rpc_rqst *rqstp, 6708 struct xdr_stream *xdr, 6709 struct nfs4_secinfo_res *res) 6710 { 6711 struct compound_hdr hdr; 6712 int status; 6713 6714 status = decode_compound_hdr(xdr, &hdr); 6715 if (status) 6716 goto out; 6717 status = decode_sequence(xdr, &res->seq_res, rqstp); 6718 if (status) 6719 goto out; 6720 status = decode_putfh(xdr); 6721 if (status) 6722 goto out; 6723 status = decode_secinfo(xdr, res); 6724 out: 6725 return status; 6726 } 6727 6728 #if defined(CONFIG_NFS_V4_1) 6729 /* 6730 * Decode BIND_CONN_TO_SESSION response 6731 */ 6732 static int nfs4_xdr_dec_bind_conn_to_session(struct rpc_rqst *rqstp, 6733 struct xdr_stream *xdr, 6734 void *res) 6735 { 6736 struct compound_hdr hdr; 6737 int status; 6738 6739 status = decode_compound_hdr(xdr, &hdr); 6740 if (!status) 6741 status = decode_bind_conn_to_session(xdr, res); 6742 return status; 6743 } 6744 6745 /* 6746 * Decode EXCHANGE_ID response 6747 */ 6748 static int nfs4_xdr_dec_exchange_id(struct rpc_rqst *rqstp, 6749 struct xdr_stream *xdr, 6750 void *res) 6751 { 6752 struct compound_hdr hdr; 6753 int status; 6754 6755 status = decode_compound_hdr(xdr, &hdr); 6756 if (!status) 6757 status = decode_exchange_id(xdr, res); 6758 return status; 6759 } 6760 6761 /* 6762 * Decode CREATE_SESSION response 6763 */ 6764 static int nfs4_xdr_dec_create_session(struct rpc_rqst *rqstp, 6765 struct xdr_stream *xdr, 6766 struct nfs41_create_session_res *res) 6767 { 6768 struct compound_hdr hdr; 6769 int status; 6770 6771 status = decode_compound_hdr(xdr, &hdr); 6772 if (!status) 6773 status = decode_create_session(xdr, res); 6774 return status; 6775 } 6776 6777 /* 6778 * Decode DESTROY_SESSION response 6779 */ 6780 static int nfs4_xdr_dec_destroy_session(struct rpc_rqst *rqstp, 6781 struct xdr_stream *xdr, 6782 void *res) 6783 { 6784 struct compound_hdr hdr; 6785 int status; 6786 6787 status = decode_compound_hdr(xdr, &hdr); 6788 if (!status) 6789 status = decode_destroy_session(xdr, res); 6790 return status; 6791 } 6792 6793 /* 6794 * Decode DESTROY_CLIENTID response 6795 */ 6796 static int nfs4_xdr_dec_destroy_clientid(struct rpc_rqst *rqstp, 6797 struct xdr_stream *xdr, 6798 void *res) 6799 { 6800 struct compound_hdr hdr; 6801 int status; 6802 6803 status = decode_compound_hdr(xdr, &hdr); 6804 if (!status) 6805 status = decode_destroy_clientid(xdr, res); 6806 return status; 6807 } 6808 6809 /* 6810 * Decode SEQUENCE response 6811 */ 6812 static int nfs4_xdr_dec_sequence(struct rpc_rqst *rqstp, 6813 struct xdr_stream *xdr, 6814 struct nfs4_sequence_res *res) 6815 { 6816 struct compound_hdr hdr; 6817 int status; 6818 6819 status = decode_compound_hdr(xdr, &hdr); 6820 if (!status) 6821 status = decode_sequence(xdr, res, rqstp); 6822 return status; 6823 } 6824 6825 /* 6826 * Decode GET_LEASE_TIME response 6827 */ 6828 static int nfs4_xdr_dec_get_lease_time(struct rpc_rqst *rqstp, 6829 struct xdr_stream *xdr, 6830 struct nfs4_get_lease_time_res *res) 6831 { 6832 struct compound_hdr hdr; 6833 int status; 6834 6835 status = decode_compound_hdr(xdr, &hdr); 6836 if (!status) 6837 status = decode_sequence(xdr, &res->lr_seq_res, rqstp); 6838 if (!status) 6839 status = decode_putrootfh(xdr); 6840 if (!status) 6841 status = decode_fsinfo(xdr, res->lr_fsinfo); 6842 return status; 6843 } 6844 6845 /* 6846 * Decode RECLAIM_COMPLETE response 6847 */ 6848 static int nfs4_xdr_dec_reclaim_complete(struct rpc_rqst *rqstp, 6849 struct xdr_stream *xdr, 6850 struct nfs41_reclaim_complete_res *res) 6851 { 6852 struct compound_hdr hdr; 6853 int status; 6854 6855 status = decode_compound_hdr(xdr, &hdr); 6856 if (!status) 6857 status = decode_sequence(xdr, &res->seq_res, rqstp); 6858 if (!status) 6859 status = decode_reclaim_complete(xdr, (void *)NULL); 6860 return status; 6861 } 6862 6863 /* 6864 * Decode GETDEVICELIST response 6865 */ 6866 static int nfs4_xdr_dec_getdevicelist(struct rpc_rqst *rqstp, 6867 struct xdr_stream *xdr, 6868 struct nfs4_getdevicelist_res *res) 6869 { 6870 struct compound_hdr hdr; 6871 int status; 6872 6873 dprintk("encoding getdevicelist!\n"); 6874 6875 status = decode_compound_hdr(xdr, &hdr); 6876 if (status != 0) 6877 goto out; 6878 status = decode_sequence(xdr, &res->seq_res, rqstp); 6879 if (status != 0) 6880 goto out; 6881 status = decode_putfh(xdr); 6882 if (status != 0) 6883 goto out; 6884 status = decode_getdevicelist(xdr, res->devlist); 6885 out: 6886 return status; 6887 } 6888 6889 /* 6890 * Decode GETDEVINFO response 6891 */ 6892 static int nfs4_xdr_dec_getdeviceinfo(struct rpc_rqst *rqstp, 6893 struct xdr_stream *xdr, 6894 struct nfs4_getdeviceinfo_res *res) 6895 { 6896 struct compound_hdr hdr; 6897 int status; 6898 6899 status = decode_compound_hdr(xdr, &hdr); 6900 if (status != 0) 6901 goto out; 6902 status = decode_sequence(xdr, &res->seq_res, rqstp); 6903 if (status != 0) 6904 goto out; 6905 status = decode_getdeviceinfo(xdr, res->pdev); 6906 out: 6907 return status; 6908 } 6909 6910 /* 6911 * Decode LAYOUTGET response 6912 */ 6913 static int nfs4_xdr_dec_layoutget(struct rpc_rqst *rqstp, 6914 struct xdr_stream *xdr, 6915 struct nfs4_layoutget_res *res) 6916 { 6917 struct compound_hdr hdr; 6918 int status; 6919 6920 status = decode_compound_hdr(xdr, &hdr); 6921 if (status) 6922 goto out; 6923 status = decode_sequence(xdr, &res->seq_res, rqstp); 6924 if (status) 6925 goto out; 6926 status = decode_putfh(xdr); 6927 if (status) 6928 goto out; 6929 status = decode_layoutget(xdr, rqstp, res); 6930 out: 6931 return status; 6932 } 6933 6934 /* 6935 * Decode LAYOUTRETURN response 6936 */ 6937 static int nfs4_xdr_dec_layoutreturn(struct rpc_rqst *rqstp, 6938 struct xdr_stream *xdr, 6939 struct nfs4_layoutreturn_res *res) 6940 { 6941 struct compound_hdr hdr; 6942 int status; 6943 6944 status = decode_compound_hdr(xdr, &hdr); 6945 if (status) 6946 goto out; 6947 status = decode_sequence(xdr, &res->seq_res, rqstp); 6948 if (status) 6949 goto out; 6950 status = decode_putfh(xdr); 6951 if (status) 6952 goto out; 6953 status = decode_layoutreturn(xdr, res); 6954 out: 6955 return status; 6956 } 6957 6958 /* 6959 * Decode LAYOUTCOMMIT response 6960 */ 6961 static int nfs4_xdr_dec_layoutcommit(struct rpc_rqst *rqstp, 6962 struct xdr_stream *xdr, 6963 struct nfs4_layoutcommit_res *res) 6964 { 6965 struct compound_hdr hdr; 6966 int status; 6967 6968 status = decode_compound_hdr(xdr, &hdr); 6969 if (status) 6970 goto out; 6971 status = decode_sequence(xdr, &res->seq_res, rqstp); 6972 if (status) 6973 goto out; 6974 status = decode_putfh(xdr); 6975 if (status) 6976 goto out; 6977 status = decode_layoutcommit(xdr, rqstp, res); 6978 if (status) 6979 goto out; 6980 decode_getfattr(xdr, res->fattr, res->server); 6981 out: 6982 return status; 6983 } 6984 6985 /* 6986 * Decode SECINFO_NO_NAME response 6987 */ 6988 static int nfs4_xdr_dec_secinfo_no_name(struct rpc_rqst *rqstp, 6989 struct xdr_stream *xdr, 6990 struct nfs4_secinfo_res *res) 6991 { 6992 struct compound_hdr hdr; 6993 int status; 6994 6995 status = decode_compound_hdr(xdr, &hdr); 6996 if (status) 6997 goto out; 6998 status = decode_sequence(xdr, &res->seq_res, rqstp); 6999 if (status) 7000 goto out; 7001 status = decode_putrootfh(xdr); 7002 if (status) 7003 goto out; 7004 status = decode_secinfo_no_name(xdr, res); 7005 out: 7006 return status; 7007 } 7008 7009 /* 7010 * Decode TEST_STATEID response 7011 */ 7012 static int nfs4_xdr_dec_test_stateid(struct rpc_rqst *rqstp, 7013 struct xdr_stream *xdr, 7014 struct nfs41_test_stateid_res *res) 7015 { 7016 struct compound_hdr hdr; 7017 int status; 7018 7019 status = decode_compound_hdr(xdr, &hdr); 7020 if (status) 7021 goto out; 7022 status = decode_sequence(xdr, &res->seq_res, rqstp); 7023 if (status) 7024 goto out; 7025 status = decode_test_stateid(xdr, res); 7026 out: 7027 return status; 7028 } 7029 7030 /* 7031 * Decode FREE_STATEID response 7032 */ 7033 static int nfs4_xdr_dec_free_stateid(struct rpc_rqst *rqstp, 7034 struct xdr_stream *xdr, 7035 struct nfs41_free_stateid_res *res) 7036 { 7037 struct compound_hdr hdr; 7038 int status; 7039 7040 status = decode_compound_hdr(xdr, &hdr); 7041 if (status) 7042 goto out; 7043 status = decode_sequence(xdr, &res->seq_res, rqstp); 7044 if (status) 7045 goto out; 7046 status = decode_free_stateid(xdr, res); 7047 out: 7048 return status; 7049 } 7050 #endif /* CONFIG_NFS_V4_1 */ 7051 7052 /** 7053 * nfs4_decode_dirent - Decode a single NFSv4 directory entry stored in 7054 * the local page cache. 7055 * @xdr: XDR stream where entry resides 7056 * @entry: buffer to fill in with entry data 7057 * @plus: boolean indicating whether this should be a readdirplus entry 7058 * 7059 * Returns zero if successful, otherwise a negative errno value is 7060 * returned. 7061 * 7062 * This function is not invoked during READDIR reply decoding, but 7063 * rather whenever an application invokes the getdents(2) system call 7064 * on a directory already in our cache. 7065 */ 7066 int nfs4_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry, 7067 int plus) 7068 { 7069 unsigned int savep; 7070 uint32_t bitmap[3] = {0}; 7071 uint32_t len; 7072 __be32 *p = xdr_inline_decode(xdr, 4); 7073 if (unlikely(!p)) 7074 goto out_overflow; 7075 if (*p == xdr_zero) { 7076 p = xdr_inline_decode(xdr, 4); 7077 if (unlikely(!p)) 7078 goto out_overflow; 7079 if (*p == xdr_zero) 7080 return -EAGAIN; 7081 entry->eof = 1; 7082 return -EBADCOOKIE; 7083 } 7084 7085 p = xdr_inline_decode(xdr, 12); 7086 if (unlikely(!p)) 7087 goto out_overflow; 7088 entry->prev_cookie = entry->cookie; 7089 p = xdr_decode_hyper(p, &entry->cookie); 7090 entry->len = be32_to_cpup(p); 7091 7092 p = xdr_inline_decode(xdr, entry->len); 7093 if (unlikely(!p)) 7094 goto out_overflow; 7095 entry->name = (const char *) p; 7096 7097 /* 7098 * In case the server doesn't return an inode number, 7099 * we fake one here. (We don't use inode number 0, 7100 * since glibc seems to choke on it...) 7101 */ 7102 entry->ino = 1; 7103 entry->fattr->valid = 0; 7104 7105 if (decode_attr_bitmap(xdr, bitmap) < 0) 7106 goto out_overflow; 7107 7108 if (decode_attr_length(xdr, &len, &savep) < 0) 7109 goto out_overflow; 7110 7111 if (decode_getfattr_attrs(xdr, bitmap, entry->fattr, entry->fh, 7112 NULL, entry->server) < 0) 7113 goto out_overflow; 7114 if (entry->fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID) 7115 entry->ino = entry->fattr->mounted_on_fileid; 7116 else if (entry->fattr->valid & NFS_ATTR_FATTR_FILEID) 7117 entry->ino = entry->fattr->fileid; 7118 7119 entry->d_type = DT_UNKNOWN; 7120 if (entry->fattr->valid & NFS_ATTR_FATTR_TYPE) 7121 entry->d_type = nfs_umode_to_dtype(entry->fattr->mode); 7122 7123 return 0; 7124 7125 out_overflow: 7126 print_overflow_msg(__func__, xdr); 7127 return -EAGAIN; 7128 } 7129 7130 /* 7131 * We need to translate between nfs status return values and 7132 * the local errno values which may not be the same. 7133 */ 7134 static struct { 7135 int stat; 7136 int errno; 7137 } nfs_errtbl[] = { 7138 { NFS4_OK, 0 }, 7139 { NFS4ERR_PERM, -EPERM }, 7140 { NFS4ERR_NOENT, -ENOENT }, 7141 { NFS4ERR_IO, -errno_NFSERR_IO}, 7142 { NFS4ERR_NXIO, -ENXIO }, 7143 { NFS4ERR_ACCESS, -EACCES }, 7144 { NFS4ERR_EXIST, -EEXIST }, 7145 { NFS4ERR_XDEV, -EXDEV }, 7146 { NFS4ERR_NOTDIR, -ENOTDIR }, 7147 { NFS4ERR_ISDIR, -EISDIR }, 7148 { NFS4ERR_INVAL, -EINVAL }, 7149 { NFS4ERR_FBIG, -EFBIG }, 7150 { NFS4ERR_NOSPC, -ENOSPC }, 7151 { NFS4ERR_ROFS, -EROFS }, 7152 { NFS4ERR_MLINK, -EMLINK }, 7153 { NFS4ERR_NAMETOOLONG, -ENAMETOOLONG }, 7154 { NFS4ERR_NOTEMPTY, -ENOTEMPTY }, 7155 { NFS4ERR_DQUOT, -EDQUOT }, 7156 { NFS4ERR_STALE, -ESTALE }, 7157 { NFS4ERR_BADHANDLE, -EBADHANDLE }, 7158 { NFS4ERR_BAD_COOKIE, -EBADCOOKIE }, 7159 { NFS4ERR_NOTSUPP, -ENOTSUPP }, 7160 { NFS4ERR_TOOSMALL, -ETOOSMALL }, 7161 { NFS4ERR_SERVERFAULT, -EREMOTEIO }, 7162 { NFS4ERR_BADTYPE, -EBADTYPE }, 7163 { NFS4ERR_LOCKED, -EAGAIN }, 7164 { NFS4ERR_SYMLINK, -ELOOP }, 7165 { NFS4ERR_OP_ILLEGAL, -EOPNOTSUPP }, 7166 { NFS4ERR_DEADLOCK, -EDEADLK }, 7167 { -1, -EIO } 7168 }; 7169 7170 /* 7171 * Convert an NFS error code to a local one. 7172 * This one is used jointly by NFSv2 and NFSv3. 7173 */ 7174 static int 7175 nfs4_stat_to_errno(int stat) 7176 { 7177 int i; 7178 for (i = 0; nfs_errtbl[i].stat != -1; i++) { 7179 if (nfs_errtbl[i].stat == stat) 7180 return nfs_errtbl[i].errno; 7181 } 7182 if (stat <= 10000 || stat > 10100) { 7183 /* The server is looney tunes. */ 7184 return -EREMOTEIO; 7185 } 7186 /* If we cannot translate the error, the recovery routines should 7187 * handle it. 7188 * Note: remaining NFSv4 error codes have values > 10000, so should 7189 * not conflict with native Linux error codes. 7190 */ 7191 return -stat; 7192 } 7193 7194 #define PROC(proc, argtype, restype) \ 7195 [NFSPROC4_CLNT_##proc] = { \ 7196 .p_proc = NFSPROC4_COMPOUND, \ 7197 .p_encode = (kxdreproc_t)nfs4_xdr_##argtype, \ 7198 .p_decode = (kxdrdproc_t)nfs4_xdr_##restype, \ 7199 .p_arglen = NFS4_##argtype##_sz, \ 7200 .p_replen = NFS4_##restype##_sz, \ 7201 .p_statidx = NFSPROC4_CLNT_##proc, \ 7202 .p_name = #proc, \ 7203 } 7204 7205 struct rpc_procinfo nfs4_procedures[] = { 7206 PROC(READ, enc_read, dec_read), 7207 PROC(WRITE, enc_write, dec_write), 7208 PROC(COMMIT, enc_commit, dec_commit), 7209 PROC(OPEN, enc_open, dec_open), 7210 PROC(OPEN_CONFIRM, enc_open_confirm, dec_open_confirm), 7211 PROC(OPEN_NOATTR, enc_open_noattr, dec_open_noattr), 7212 PROC(OPEN_DOWNGRADE, enc_open_downgrade, dec_open_downgrade), 7213 PROC(CLOSE, enc_close, dec_close), 7214 PROC(SETATTR, enc_setattr, dec_setattr), 7215 PROC(FSINFO, enc_fsinfo, dec_fsinfo), 7216 PROC(RENEW, enc_renew, dec_renew), 7217 PROC(SETCLIENTID, enc_setclientid, dec_setclientid), 7218 PROC(SETCLIENTID_CONFIRM, enc_setclientid_confirm, dec_setclientid_confirm), 7219 PROC(LOCK, enc_lock, dec_lock), 7220 PROC(LOCKT, enc_lockt, dec_lockt), 7221 PROC(LOCKU, enc_locku, dec_locku), 7222 PROC(ACCESS, enc_access, dec_access), 7223 PROC(GETATTR, enc_getattr, dec_getattr), 7224 PROC(LOOKUP, enc_lookup, dec_lookup), 7225 PROC(LOOKUP_ROOT, enc_lookup_root, dec_lookup_root), 7226 PROC(REMOVE, enc_remove, dec_remove), 7227 PROC(RENAME, enc_rename, dec_rename), 7228 PROC(LINK, enc_link, dec_link), 7229 PROC(SYMLINK, enc_symlink, dec_symlink), 7230 PROC(CREATE, enc_create, dec_create), 7231 PROC(PATHCONF, enc_pathconf, dec_pathconf), 7232 PROC(STATFS, enc_statfs, dec_statfs), 7233 PROC(READLINK, enc_readlink, dec_readlink), 7234 PROC(READDIR, enc_readdir, dec_readdir), 7235 PROC(SERVER_CAPS, enc_server_caps, dec_server_caps), 7236 PROC(DELEGRETURN, enc_delegreturn, dec_delegreturn), 7237 PROC(GETACL, enc_getacl, dec_getacl), 7238 PROC(SETACL, enc_setacl, dec_setacl), 7239 PROC(FS_LOCATIONS, enc_fs_locations, dec_fs_locations), 7240 PROC(RELEASE_LOCKOWNER, enc_release_lockowner, dec_release_lockowner), 7241 PROC(SECINFO, enc_secinfo, dec_secinfo), 7242 #if defined(CONFIG_NFS_V4_1) 7243 PROC(EXCHANGE_ID, enc_exchange_id, dec_exchange_id), 7244 PROC(CREATE_SESSION, enc_create_session, dec_create_session), 7245 PROC(DESTROY_SESSION, enc_destroy_session, dec_destroy_session), 7246 PROC(SEQUENCE, enc_sequence, dec_sequence), 7247 PROC(GET_LEASE_TIME, enc_get_lease_time, dec_get_lease_time), 7248 PROC(RECLAIM_COMPLETE, enc_reclaim_complete, dec_reclaim_complete), 7249 PROC(GETDEVICEINFO, enc_getdeviceinfo, dec_getdeviceinfo), 7250 PROC(LAYOUTGET, enc_layoutget, dec_layoutget), 7251 PROC(LAYOUTCOMMIT, enc_layoutcommit, dec_layoutcommit), 7252 PROC(LAYOUTRETURN, enc_layoutreturn, dec_layoutreturn), 7253 PROC(SECINFO_NO_NAME, enc_secinfo_no_name, dec_secinfo_no_name), 7254 PROC(TEST_STATEID, enc_test_stateid, dec_test_stateid), 7255 PROC(FREE_STATEID, enc_free_stateid, dec_free_stateid), 7256 PROC(GETDEVICELIST, enc_getdevicelist, dec_getdevicelist), 7257 PROC(BIND_CONN_TO_SESSION, 7258 enc_bind_conn_to_session, dec_bind_conn_to_session), 7259 PROC(DESTROY_CLIENTID, enc_destroy_clientid, dec_destroy_clientid), 7260 #endif /* CONFIG_NFS_V4_1 */ 7261 }; 7262 7263 const struct rpc_version nfs_version4 = { 7264 .number = 4, 7265 .nrprocs = ARRAY_SIZE(nfs4_procedures), 7266 .procs = nfs4_procedures 7267 }; 7268 7269 /* 7270 * Local variables: 7271 * c-basic-offset: 8 7272 * End: 7273 */ 7274