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 #ifdef CONFIG_NFS_V4_SECURITY_LABEL 106 /* PI(4 bytes) + LFS(4 bytes) + 1(for null terminator?) + MAXLABELLEN */ 107 #define nfs4_label_maxsz (4 + 4 + 1 + XDR_QUADLEN(NFS4_MAXLABELLEN)) 108 #define encode_readdir_space 24 109 #define encode_readdir_bitmask_sz 3 110 #else 111 #define nfs4_label_maxsz 0 112 #define encode_readdir_space 20 113 #define encode_readdir_bitmask_sz 2 114 #endif 115 /* We support only one layout type per file system */ 116 #define decode_mdsthreshold_maxsz (1 + 1 + nfs4_fattr_bitmap_maxsz + 1 + 8) 117 /* This is based on getfattr, which uses the most attributes: */ 118 #define nfs4_fattr_value_maxsz (1 + (1 + 2 + 2 + 4 + 2 + 1 + 1 + 2 + 2 + \ 119 3 + 3 + 3 + nfs4_owner_maxsz + \ 120 nfs4_group_maxsz + nfs4_label_maxsz + \ 121 decode_mdsthreshold_maxsz)) 122 #define nfs4_fattr_maxsz (nfs4_fattr_bitmap_maxsz + \ 123 nfs4_fattr_value_maxsz) 124 #define decode_getattr_maxsz (op_decode_hdr_maxsz + nfs4_fattr_maxsz) 125 #define encode_attrs_maxsz (nfs4_fattr_bitmap_maxsz + \ 126 1 + 2 + 1 + \ 127 nfs4_owner_maxsz + \ 128 nfs4_group_maxsz + \ 129 nfs4_label_maxsz + \ 130 4 + 4) 131 #define encode_savefh_maxsz (op_encode_hdr_maxsz) 132 #define decode_savefh_maxsz (op_decode_hdr_maxsz) 133 #define encode_restorefh_maxsz (op_encode_hdr_maxsz) 134 #define decode_restorefh_maxsz (op_decode_hdr_maxsz) 135 #define encode_fsinfo_maxsz (encode_getattr_maxsz) 136 /* The 5 accounts for the PNFS attributes, and assumes that at most three 137 * layout types will be returned. 138 */ 139 #define decode_fsinfo_maxsz (op_decode_hdr_maxsz + \ 140 nfs4_fattr_bitmap_maxsz + 4 + 8 + 5) 141 #define encode_renew_maxsz (op_encode_hdr_maxsz + 3) 142 #define decode_renew_maxsz (op_decode_hdr_maxsz) 143 #define encode_setclientid_maxsz \ 144 (op_encode_hdr_maxsz + \ 145 XDR_QUADLEN(NFS4_VERIFIER_SIZE) + \ 146 XDR_QUADLEN(NFS4_SETCLIENTID_NAMELEN) + \ 147 1 /* sc_prog */ + \ 148 XDR_QUADLEN(RPCBIND_MAXNETIDLEN) + \ 149 XDR_QUADLEN(RPCBIND_MAXUADDRLEN) + \ 150 1) /* sc_cb_ident */ 151 #define decode_setclientid_maxsz \ 152 (op_decode_hdr_maxsz + \ 153 2 + \ 154 1024) /* large value for CLID_INUSE */ 155 #define encode_setclientid_confirm_maxsz \ 156 (op_encode_hdr_maxsz + \ 157 3 + (NFS4_VERIFIER_SIZE >> 2)) 158 #define decode_setclientid_confirm_maxsz \ 159 (op_decode_hdr_maxsz) 160 #define encode_lookup_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz) 161 #define decode_lookup_maxsz (op_decode_hdr_maxsz) 162 #define encode_share_access_maxsz \ 163 (2) 164 #define encode_createmode_maxsz (1 + encode_attrs_maxsz + encode_verifier_maxsz) 165 #define encode_opentype_maxsz (1 + encode_createmode_maxsz) 166 #define encode_claim_null_maxsz (1 + nfs4_name_maxsz) 167 #define encode_open_maxsz (op_encode_hdr_maxsz + \ 168 2 + encode_share_access_maxsz + 2 + \ 169 open_owner_id_maxsz + \ 170 encode_opentype_maxsz + \ 171 encode_claim_null_maxsz) 172 #define decode_ace_maxsz (3 + nfs4_owner_maxsz) 173 #define decode_delegation_maxsz (1 + decode_stateid_maxsz + 1 + \ 174 decode_ace_maxsz) 175 #define decode_change_info_maxsz (5) 176 #define decode_open_maxsz (op_decode_hdr_maxsz + \ 177 decode_stateid_maxsz + \ 178 decode_change_info_maxsz + 1 + \ 179 nfs4_fattr_bitmap_maxsz + \ 180 decode_delegation_maxsz) 181 #define encode_open_confirm_maxsz \ 182 (op_encode_hdr_maxsz + \ 183 encode_stateid_maxsz + 1) 184 #define decode_open_confirm_maxsz \ 185 (op_decode_hdr_maxsz + \ 186 decode_stateid_maxsz) 187 #define encode_open_downgrade_maxsz \ 188 (op_encode_hdr_maxsz + \ 189 encode_stateid_maxsz + 1 + \ 190 encode_share_access_maxsz) 191 #define decode_open_downgrade_maxsz \ 192 (op_decode_hdr_maxsz + \ 193 decode_stateid_maxsz) 194 #define encode_close_maxsz (op_encode_hdr_maxsz + \ 195 1 + encode_stateid_maxsz) 196 #define decode_close_maxsz (op_decode_hdr_maxsz + \ 197 decode_stateid_maxsz) 198 #define encode_setattr_maxsz (op_encode_hdr_maxsz + \ 199 encode_stateid_maxsz + \ 200 encode_attrs_maxsz) 201 #define decode_setattr_maxsz (op_decode_hdr_maxsz + \ 202 nfs4_fattr_bitmap_maxsz) 203 #define encode_read_maxsz (op_encode_hdr_maxsz + \ 204 encode_stateid_maxsz + 3) 205 #define decode_read_maxsz (op_decode_hdr_maxsz + 2) 206 #define encode_readdir_maxsz (op_encode_hdr_maxsz + \ 207 2 + encode_verifier_maxsz + 5 + \ 208 nfs4_label_maxsz) 209 #define decode_readdir_maxsz (op_decode_hdr_maxsz + \ 210 decode_verifier_maxsz + \ 211 nfs4_label_maxsz + nfs4_fattr_maxsz) 212 #define encode_readlink_maxsz (op_encode_hdr_maxsz) 213 #define decode_readlink_maxsz (op_decode_hdr_maxsz + 1) 214 #define encode_write_maxsz (op_encode_hdr_maxsz + \ 215 encode_stateid_maxsz + 4) 216 #define decode_write_maxsz (op_decode_hdr_maxsz + \ 217 2 + decode_verifier_maxsz) 218 #define encode_commit_maxsz (op_encode_hdr_maxsz + 3) 219 #define decode_commit_maxsz (op_decode_hdr_maxsz + \ 220 decode_verifier_maxsz) 221 #define encode_remove_maxsz (op_encode_hdr_maxsz + \ 222 nfs4_name_maxsz) 223 #define decode_remove_maxsz (op_decode_hdr_maxsz + \ 224 decode_change_info_maxsz) 225 #define encode_rename_maxsz (op_encode_hdr_maxsz + \ 226 2 * nfs4_name_maxsz) 227 #define decode_rename_maxsz (op_decode_hdr_maxsz + \ 228 decode_change_info_maxsz + \ 229 decode_change_info_maxsz) 230 #define encode_link_maxsz (op_encode_hdr_maxsz + \ 231 nfs4_name_maxsz) 232 #define decode_link_maxsz (op_decode_hdr_maxsz + decode_change_info_maxsz) 233 #define encode_lockowner_maxsz (7) 234 #define encode_lock_maxsz (op_encode_hdr_maxsz + \ 235 7 + \ 236 1 + encode_stateid_maxsz + 1 + \ 237 encode_lockowner_maxsz) 238 #define decode_lock_denied_maxsz \ 239 (8 + decode_lockowner_maxsz) 240 #define decode_lock_maxsz (op_decode_hdr_maxsz + \ 241 decode_lock_denied_maxsz) 242 #define encode_lockt_maxsz (op_encode_hdr_maxsz + 5 + \ 243 encode_lockowner_maxsz) 244 #define decode_lockt_maxsz (op_decode_hdr_maxsz + \ 245 decode_lock_denied_maxsz) 246 #define encode_locku_maxsz (op_encode_hdr_maxsz + 3 + \ 247 encode_stateid_maxsz + \ 248 4) 249 #define decode_locku_maxsz (op_decode_hdr_maxsz + \ 250 decode_stateid_maxsz) 251 #define encode_release_lockowner_maxsz \ 252 (op_encode_hdr_maxsz + \ 253 encode_lockowner_maxsz) 254 #define decode_release_lockowner_maxsz \ 255 (op_decode_hdr_maxsz) 256 #define encode_access_maxsz (op_encode_hdr_maxsz + 1) 257 #define decode_access_maxsz (op_decode_hdr_maxsz + 2) 258 #define encode_symlink_maxsz (op_encode_hdr_maxsz + \ 259 1 + nfs4_name_maxsz + \ 260 1 + \ 261 nfs4_fattr_maxsz) 262 #define decode_symlink_maxsz (op_decode_hdr_maxsz + 8) 263 #define encode_create_maxsz (op_encode_hdr_maxsz + \ 264 1 + 2 + nfs4_name_maxsz + \ 265 encode_attrs_maxsz) 266 #define decode_create_maxsz (op_decode_hdr_maxsz + \ 267 decode_change_info_maxsz + \ 268 nfs4_fattr_bitmap_maxsz) 269 #define encode_statfs_maxsz (encode_getattr_maxsz) 270 #define decode_statfs_maxsz (decode_getattr_maxsz) 271 #define encode_delegreturn_maxsz (op_encode_hdr_maxsz + 4) 272 #define decode_delegreturn_maxsz (op_decode_hdr_maxsz) 273 #define encode_getacl_maxsz (encode_getattr_maxsz) 274 #define decode_getacl_maxsz (op_decode_hdr_maxsz + \ 275 nfs4_fattr_bitmap_maxsz + 1) 276 #define encode_setacl_maxsz (op_encode_hdr_maxsz + \ 277 encode_stateid_maxsz + 3) 278 #define decode_setacl_maxsz (decode_setattr_maxsz) 279 #define encode_fs_locations_maxsz \ 280 (encode_getattr_maxsz) 281 #define decode_fs_locations_maxsz \ 282 (0) 283 #define encode_secinfo_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz) 284 #define decode_secinfo_maxsz (op_decode_hdr_maxsz + 1 + ((NFS_MAX_SECFLAVORS * (16 + GSS_OID_MAX_LEN)) / 4)) 285 286 #if defined(CONFIG_NFS_V4_1) 287 #define NFS4_MAX_MACHINE_NAME_LEN (64) 288 #define IMPL_NAME_LIMIT (sizeof(utsname()->sysname) + sizeof(utsname()->release) + \ 289 sizeof(utsname()->version) + sizeof(utsname()->machine) + 8) 290 291 #define encode_exchange_id_maxsz (op_encode_hdr_maxsz + \ 292 encode_verifier_maxsz + \ 293 1 /* co_ownerid.len */ + \ 294 XDR_QUADLEN(NFS4_EXCHANGE_ID_LEN) + \ 295 1 /* flags */ + \ 296 1 /* spa_how */ + \ 297 /* max is SP4_MACH_CRED (for now) */ + \ 298 1 + NFS4_OP_MAP_NUM_WORDS + \ 299 1 + NFS4_OP_MAP_NUM_WORDS + \ 300 1 /* implementation id array of size 1 */ + \ 301 1 /* nii_domain */ + \ 302 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \ 303 1 /* nii_name */ + \ 304 XDR_QUADLEN(IMPL_NAME_LIMIT) + \ 305 3 /* nii_date */) 306 #define decode_exchange_id_maxsz (op_decode_hdr_maxsz + \ 307 2 /* eir_clientid */ + \ 308 1 /* eir_sequenceid */ + \ 309 1 /* eir_flags */ + \ 310 1 /* spr_how */ + \ 311 /* max is SP4_MACH_CRED (for now) */ + \ 312 1 + NFS4_OP_MAP_NUM_WORDS + \ 313 1 + NFS4_OP_MAP_NUM_WORDS + \ 314 2 /* eir_server_owner.so_minor_id */ + \ 315 /* eir_server_owner.so_major_id<> */ \ 316 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \ 317 /* eir_server_scope<> */ \ 318 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \ 319 1 /* eir_server_impl_id array length */ + \ 320 1 /* nii_domain */ + \ 321 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \ 322 1 /* nii_name */ + \ 323 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \ 324 3 /* nii_date */) 325 #define encode_channel_attrs_maxsz (6 + 1 /* ca_rdma_ird.len (0) */) 326 #define decode_channel_attrs_maxsz (6 + \ 327 1 /* ca_rdma_ird.len */ + \ 328 1 /* ca_rdma_ird */) 329 #define encode_create_session_maxsz (op_encode_hdr_maxsz + \ 330 2 /* csa_clientid */ + \ 331 1 /* csa_sequence */ + \ 332 1 /* csa_flags */ + \ 333 encode_channel_attrs_maxsz + \ 334 encode_channel_attrs_maxsz + \ 335 1 /* csa_cb_program */ + \ 336 1 /* csa_sec_parms.len (1) */ + \ 337 1 /* cb_secflavor (AUTH_SYS) */ + \ 338 1 /* stamp */ + \ 339 1 /* machinename.len */ + \ 340 XDR_QUADLEN(NFS4_MAX_MACHINE_NAME_LEN) + \ 341 1 /* uid */ + \ 342 1 /* gid */ + \ 343 1 /* gids.len (0) */) 344 #define decode_create_session_maxsz (op_decode_hdr_maxsz + \ 345 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \ 346 1 /* csr_sequence */ + \ 347 1 /* csr_flags */ + \ 348 decode_channel_attrs_maxsz + \ 349 decode_channel_attrs_maxsz) 350 #define encode_bind_conn_to_session_maxsz (op_encode_hdr_maxsz + \ 351 /* bctsa_sessid */ \ 352 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \ 353 1 /* bctsa_dir */ + \ 354 1 /* bctsa_use_conn_in_rdma_mode */) 355 #define decode_bind_conn_to_session_maxsz (op_decode_hdr_maxsz + \ 356 /* bctsr_sessid */ \ 357 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \ 358 1 /* bctsr_dir */ + \ 359 1 /* bctsr_use_conn_in_rdma_mode */) 360 #define encode_destroy_session_maxsz (op_encode_hdr_maxsz + 4) 361 #define decode_destroy_session_maxsz (op_decode_hdr_maxsz) 362 #define encode_destroy_clientid_maxsz (op_encode_hdr_maxsz + 2) 363 #define decode_destroy_clientid_maxsz (op_decode_hdr_maxsz) 364 #define encode_sequence_maxsz (op_encode_hdr_maxsz + \ 365 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 4) 366 #define decode_sequence_maxsz (op_decode_hdr_maxsz + \ 367 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 5) 368 #define encode_reclaim_complete_maxsz (op_encode_hdr_maxsz + 4) 369 #define decode_reclaim_complete_maxsz (op_decode_hdr_maxsz + 4) 370 #define encode_getdevicelist_maxsz (op_encode_hdr_maxsz + 4 + \ 371 encode_verifier_maxsz) 372 #define decode_getdevicelist_maxsz (op_decode_hdr_maxsz + \ 373 2 /* nfs_cookie4 gdlr_cookie */ + \ 374 decode_verifier_maxsz \ 375 /* verifier4 gdlr_verifier */ + \ 376 1 /* gdlr_deviceid_list count */ + \ 377 XDR_QUADLEN(NFS4_PNFS_GETDEVLIST_MAXNUM * \ 378 NFS4_DEVICEID4_SIZE) \ 379 /* gdlr_deviceid_list */ + \ 380 1 /* bool gdlr_eof */) 381 #define encode_getdeviceinfo_maxsz (op_encode_hdr_maxsz + 4 + \ 382 XDR_QUADLEN(NFS4_DEVICEID4_SIZE)) 383 #define decode_getdeviceinfo_maxsz (op_decode_hdr_maxsz + \ 384 1 /* layout type */ + \ 385 1 /* opaque devaddr4 length */ + \ 386 /* devaddr4 payload is read into page */ \ 387 1 /* notification bitmap length */ + \ 388 1 /* notification bitmap */) 389 #define encode_layoutget_maxsz (op_encode_hdr_maxsz + 10 + \ 390 encode_stateid_maxsz) 391 #define decode_layoutget_maxsz (op_decode_hdr_maxsz + 8 + \ 392 decode_stateid_maxsz + \ 393 XDR_QUADLEN(PNFS_LAYOUT_MAXSIZE)) 394 #define encode_layoutcommit_maxsz (op_encode_hdr_maxsz + \ 395 2 /* offset */ + \ 396 2 /* length */ + \ 397 1 /* reclaim */ + \ 398 encode_stateid_maxsz + \ 399 1 /* new offset (true) */ + \ 400 2 /* last byte written */ + \ 401 1 /* nt_timechanged (false) */ + \ 402 1 /* layoutupdate4 layout type */ + \ 403 1 /* NULL filelayout layoutupdate4 payload */) 404 #define decode_layoutcommit_maxsz (op_decode_hdr_maxsz + 3) 405 #define encode_layoutreturn_maxsz (8 + op_encode_hdr_maxsz + \ 406 encode_stateid_maxsz + \ 407 1 /* FIXME: opaque lrf_body always empty at the moment */) 408 #define decode_layoutreturn_maxsz (op_decode_hdr_maxsz + \ 409 1 + decode_stateid_maxsz) 410 #define encode_secinfo_no_name_maxsz (op_encode_hdr_maxsz + 1) 411 #define decode_secinfo_no_name_maxsz decode_secinfo_maxsz 412 #define encode_test_stateid_maxsz (op_encode_hdr_maxsz + 2 + \ 413 XDR_QUADLEN(NFS4_STATEID_SIZE)) 414 #define decode_test_stateid_maxsz (op_decode_hdr_maxsz + 2 + 1) 415 #define encode_free_stateid_maxsz (op_encode_hdr_maxsz + 1 + \ 416 XDR_QUADLEN(NFS4_STATEID_SIZE)) 417 #define decode_free_stateid_maxsz (op_decode_hdr_maxsz + 1) 418 #else /* CONFIG_NFS_V4_1 */ 419 #define encode_sequence_maxsz 0 420 #define decode_sequence_maxsz 0 421 #endif /* CONFIG_NFS_V4_1 */ 422 423 #define NFS4_enc_compound_sz (1024) /* XXX: large enough? */ 424 #define NFS4_dec_compound_sz (1024) /* XXX: large enough? */ 425 #define NFS4_enc_read_sz (compound_encode_hdr_maxsz + \ 426 encode_sequence_maxsz + \ 427 encode_putfh_maxsz + \ 428 encode_read_maxsz) 429 #define NFS4_dec_read_sz (compound_decode_hdr_maxsz + \ 430 decode_sequence_maxsz + \ 431 decode_putfh_maxsz + \ 432 decode_read_maxsz) 433 #define NFS4_enc_readlink_sz (compound_encode_hdr_maxsz + \ 434 encode_sequence_maxsz + \ 435 encode_putfh_maxsz + \ 436 encode_readlink_maxsz) 437 #define NFS4_dec_readlink_sz (compound_decode_hdr_maxsz + \ 438 decode_sequence_maxsz + \ 439 decode_putfh_maxsz + \ 440 decode_readlink_maxsz) 441 #define NFS4_enc_readdir_sz (compound_encode_hdr_maxsz + \ 442 encode_sequence_maxsz + \ 443 encode_putfh_maxsz + \ 444 encode_readdir_maxsz) 445 #define NFS4_dec_readdir_sz (compound_decode_hdr_maxsz + \ 446 decode_sequence_maxsz + \ 447 decode_putfh_maxsz + \ 448 decode_readdir_maxsz) 449 #define NFS4_enc_write_sz (compound_encode_hdr_maxsz + \ 450 encode_sequence_maxsz + \ 451 encode_putfh_maxsz + \ 452 encode_write_maxsz + \ 453 encode_getattr_maxsz) 454 #define NFS4_dec_write_sz (compound_decode_hdr_maxsz + \ 455 decode_sequence_maxsz + \ 456 decode_putfh_maxsz + \ 457 decode_write_maxsz + \ 458 decode_getattr_maxsz) 459 #define NFS4_enc_commit_sz (compound_encode_hdr_maxsz + \ 460 encode_sequence_maxsz + \ 461 encode_putfh_maxsz + \ 462 encode_commit_maxsz) 463 #define NFS4_dec_commit_sz (compound_decode_hdr_maxsz + \ 464 decode_sequence_maxsz + \ 465 decode_putfh_maxsz + \ 466 decode_commit_maxsz) 467 #define NFS4_enc_open_sz (compound_encode_hdr_maxsz + \ 468 encode_sequence_maxsz + \ 469 encode_putfh_maxsz + \ 470 encode_open_maxsz + \ 471 encode_access_maxsz + \ 472 encode_getfh_maxsz + \ 473 encode_getattr_maxsz) 474 #define NFS4_dec_open_sz (compound_decode_hdr_maxsz + \ 475 decode_sequence_maxsz + \ 476 decode_putfh_maxsz + \ 477 decode_open_maxsz + \ 478 decode_access_maxsz + \ 479 decode_getfh_maxsz + \ 480 decode_getattr_maxsz) 481 #define NFS4_enc_open_confirm_sz \ 482 (compound_encode_hdr_maxsz + \ 483 encode_putfh_maxsz + \ 484 encode_open_confirm_maxsz) 485 #define NFS4_dec_open_confirm_sz \ 486 (compound_decode_hdr_maxsz + \ 487 decode_putfh_maxsz + \ 488 decode_open_confirm_maxsz) 489 #define NFS4_enc_open_noattr_sz (compound_encode_hdr_maxsz + \ 490 encode_sequence_maxsz + \ 491 encode_putfh_maxsz + \ 492 encode_open_maxsz + \ 493 encode_access_maxsz + \ 494 encode_getattr_maxsz) 495 #define NFS4_dec_open_noattr_sz (compound_decode_hdr_maxsz + \ 496 decode_sequence_maxsz + \ 497 decode_putfh_maxsz + \ 498 decode_open_maxsz + \ 499 decode_access_maxsz + \ 500 decode_getattr_maxsz) 501 #define NFS4_enc_open_downgrade_sz \ 502 (compound_encode_hdr_maxsz + \ 503 encode_sequence_maxsz + \ 504 encode_putfh_maxsz + \ 505 encode_open_downgrade_maxsz + \ 506 encode_getattr_maxsz) 507 #define NFS4_dec_open_downgrade_sz \ 508 (compound_decode_hdr_maxsz + \ 509 decode_sequence_maxsz + \ 510 decode_putfh_maxsz + \ 511 decode_open_downgrade_maxsz + \ 512 decode_getattr_maxsz) 513 #define NFS4_enc_close_sz (compound_encode_hdr_maxsz + \ 514 encode_sequence_maxsz + \ 515 encode_putfh_maxsz + \ 516 encode_close_maxsz + \ 517 encode_getattr_maxsz) 518 #define NFS4_dec_close_sz (compound_decode_hdr_maxsz + \ 519 decode_sequence_maxsz + \ 520 decode_putfh_maxsz + \ 521 decode_close_maxsz + \ 522 decode_getattr_maxsz) 523 #define NFS4_enc_setattr_sz (compound_encode_hdr_maxsz + \ 524 encode_sequence_maxsz + \ 525 encode_putfh_maxsz + \ 526 encode_setattr_maxsz + \ 527 encode_getattr_maxsz) 528 #define NFS4_dec_setattr_sz (compound_decode_hdr_maxsz + \ 529 decode_sequence_maxsz + \ 530 decode_putfh_maxsz + \ 531 decode_setattr_maxsz + \ 532 decode_getattr_maxsz) 533 #define NFS4_enc_fsinfo_sz (compound_encode_hdr_maxsz + \ 534 encode_sequence_maxsz + \ 535 encode_putfh_maxsz + \ 536 encode_fsinfo_maxsz) 537 #define NFS4_dec_fsinfo_sz (compound_decode_hdr_maxsz + \ 538 decode_sequence_maxsz + \ 539 decode_putfh_maxsz + \ 540 decode_fsinfo_maxsz) 541 #define NFS4_enc_renew_sz (compound_encode_hdr_maxsz + \ 542 encode_renew_maxsz) 543 #define NFS4_dec_renew_sz (compound_decode_hdr_maxsz + \ 544 decode_renew_maxsz) 545 #define NFS4_enc_setclientid_sz (compound_encode_hdr_maxsz + \ 546 encode_setclientid_maxsz) 547 #define NFS4_dec_setclientid_sz (compound_decode_hdr_maxsz + \ 548 decode_setclientid_maxsz) 549 #define NFS4_enc_setclientid_confirm_sz \ 550 (compound_encode_hdr_maxsz + \ 551 encode_setclientid_confirm_maxsz) 552 #define NFS4_dec_setclientid_confirm_sz \ 553 (compound_decode_hdr_maxsz + \ 554 decode_setclientid_confirm_maxsz) 555 #define NFS4_enc_lock_sz (compound_encode_hdr_maxsz + \ 556 encode_sequence_maxsz + \ 557 encode_putfh_maxsz + \ 558 encode_lock_maxsz) 559 #define NFS4_dec_lock_sz (compound_decode_hdr_maxsz + \ 560 decode_sequence_maxsz + \ 561 decode_putfh_maxsz + \ 562 decode_lock_maxsz) 563 #define NFS4_enc_lockt_sz (compound_encode_hdr_maxsz + \ 564 encode_sequence_maxsz + \ 565 encode_putfh_maxsz + \ 566 encode_lockt_maxsz) 567 #define NFS4_dec_lockt_sz (compound_decode_hdr_maxsz + \ 568 decode_sequence_maxsz + \ 569 decode_putfh_maxsz + \ 570 decode_lockt_maxsz) 571 #define NFS4_enc_locku_sz (compound_encode_hdr_maxsz + \ 572 encode_sequence_maxsz + \ 573 encode_putfh_maxsz + \ 574 encode_locku_maxsz) 575 #define NFS4_dec_locku_sz (compound_decode_hdr_maxsz + \ 576 decode_sequence_maxsz + \ 577 decode_putfh_maxsz + \ 578 decode_locku_maxsz) 579 #define NFS4_enc_release_lockowner_sz \ 580 (compound_encode_hdr_maxsz + \ 581 encode_lockowner_maxsz) 582 #define NFS4_dec_release_lockowner_sz \ 583 (compound_decode_hdr_maxsz + \ 584 decode_lockowner_maxsz) 585 #define NFS4_enc_access_sz (compound_encode_hdr_maxsz + \ 586 encode_sequence_maxsz + \ 587 encode_putfh_maxsz + \ 588 encode_access_maxsz + \ 589 encode_getattr_maxsz) 590 #define NFS4_dec_access_sz (compound_decode_hdr_maxsz + \ 591 decode_sequence_maxsz + \ 592 decode_putfh_maxsz + \ 593 decode_access_maxsz + \ 594 decode_getattr_maxsz) 595 #define NFS4_enc_getattr_sz (compound_encode_hdr_maxsz + \ 596 encode_sequence_maxsz + \ 597 encode_putfh_maxsz + \ 598 encode_getattr_maxsz) 599 #define NFS4_dec_getattr_sz (compound_decode_hdr_maxsz + \ 600 decode_sequence_maxsz + \ 601 decode_putfh_maxsz + \ 602 decode_getattr_maxsz) 603 #define NFS4_enc_lookup_sz (compound_encode_hdr_maxsz + \ 604 encode_sequence_maxsz + \ 605 encode_putfh_maxsz + \ 606 encode_lookup_maxsz + \ 607 encode_getattr_maxsz + \ 608 encode_getfh_maxsz) 609 #define NFS4_dec_lookup_sz (compound_decode_hdr_maxsz + \ 610 decode_sequence_maxsz + \ 611 decode_putfh_maxsz + \ 612 decode_lookup_maxsz + \ 613 decode_getattr_maxsz + \ 614 decode_getfh_maxsz) 615 #define NFS4_enc_lookup_root_sz (compound_encode_hdr_maxsz + \ 616 encode_sequence_maxsz + \ 617 encode_putrootfh_maxsz + \ 618 encode_getattr_maxsz + \ 619 encode_getfh_maxsz) 620 #define NFS4_dec_lookup_root_sz (compound_decode_hdr_maxsz + \ 621 decode_sequence_maxsz + \ 622 decode_putrootfh_maxsz + \ 623 decode_getattr_maxsz + \ 624 decode_getfh_maxsz) 625 #define NFS4_enc_remove_sz (compound_encode_hdr_maxsz + \ 626 encode_sequence_maxsz + \ 627 encode_putfh_maxsz + \ 628 encode_remove_maxsz) 629 #define NFS4_dec_remove_sz (compound_decode_hdr_maxsz + \ 630 decode_sequence_maxsz + \ 631 decode_putfh_maxsz + \ 632 decode_remove_maxsz) 633 #define NFS4_enc_rename_sz (compound_encode_hdr_maxsz + \ 634 encode_sequence_maxsz + \ 635 encode_putfh_maxsz + \ 636 encode_savefh_maxsz + \ 637 encode_putfh_maxsz + \ 638 encode_rename_maxsz) 639 #define NFS4_dec_rename_sz (compound_decode_hdr_maxsz + \ 640 decode_sequence_maxsz + \ 641 decode_putfh_maxsz + \ 642 decode_savefh_maxsz + \ 643 decode_putfh_maxsz + \ 644 decode_rename_maxsz) 645 #define NFS4_enc_link_sz (compound_encode_hdr_maxsz + \ 646 encode_sequence_maxsz + \ 647 encode_putfh_maxsz + \ 648 encode_savefh_maxsz + \ 649 encode_putfh_maxsz + \ 650 encode_link_maxsz + \ 651 encode_restorefh_maxsz + \ 652 encode_getattr_maxsz) 653 #define NFS4_dec_link_sz (compound_decode_hdr_maxsz + \ 654 decode_sequence_maxsz + \ 655 decode_putfh_maxsz + \ 656 decode_savefh_maxsz + \ 657 decode_putfh_maxsz + \ 658 decode_link_maxsz + \ 659 decode_restorefh_maxsz + \ 660 decode_getattr_maxsz) 661 #define NFS4_enc_symlink_sz (compound_encode_hdr_maxsz + \ 662 encode_sequence_maxsz + \ 663 encode_putfh_maxsz + \ 664 encode_symlink_maxsz + \ 665 encode_getattr_maxsz + \ 666 encode_getfh_maxsz) 667 #define NFS4_dec_symlink_sz (compound_decode_hdr_maxsz + \ 668 decode_sequence_maxsz + \ 669 decode_putfh_maxsz + \ 670 decode_symlink_maxsz + \ 671 decode_getattr_maxsz + \ 672 decode_getfh_maxsz) 673 #define NFS4_enc_create_sz (compound_encode_hdr_maxsz + \ 674 encode_sequence_maxsz + \ 675 encode_putfh_maxsz + \ 676 encode_create_maxsz + \ 677 encode_getfh_maxsz + \ 678 encode_getattr_maxsz) 679 #define NFS4_dec_create_sz (compound_decode_hdr_maxsz + \ 680 decode_sequence_maxsz + \ 681 decode_putfh_maxsz + \ 682 decode_create_maxsz + \ 683 decode_getfh_maxsz + \ 684 decode_getattr_maxsz) 685 #define NFS4_enc_pathconf_sz (compound_encode_hdr_maxsz + \ 686 encode_sequence_maxsz + \ 687 encode_putfh_maxsz + \ 688 encode_getattr_maxsz) 689 #define NFS4_dec_pathconf_sz (compound_decode_hdr_maxsz + \ 690 decode_sequence_maxsz + \ 691 decode_putfh_maxsz + \ 692 decode_getattr_maxsz) 693 #define NFS4_enc_statfs_sz (compound_encode_hdr_maxsz + \ 694 encode_sequence_maxsz + \ 695 encode_putfh_maxsz + \ 696 encode_statfs_maxsz) 697 #define NFS4_dec_statfs_sz (compound_decode_hdr_maxsz + \ 698 decode_sequence_maxsz + \ 699 decode_putfh_maxsz + \ 700 decode_statfs_maxsz) 701 #define NFS4_enc_server_caps_sz (compound_encode_hdr_maxsz + \ 702 encode_sequence_maxsz + \ 703 encode_putfh_maxsz + \ 704 encode_getattr_maxsz) 705 #define NFS4_dec_server_caps_sz (compound_decode_hdr_maxsz + \ 706 decode_sequence_maxsz + \ 707 decode_putfh_maxsz + \ 708 decode_getattr_maxsz) 709 #define NFS4_enc_delegreturn_sz (compound_encode_hdr_maxsz + \ 710 encode_sequence_maxsz + \ 711 encode_putfh_maxsz + \ 712 encode_delegreturn_maxsz + \ 713 encode_getattr_maxsz) 714 #define NFS4_dec_delegreturn_sz (compound_decode_hdr_maxsz + \ 715 decode_sequence_maxsz + \ 716 decode_delegreturn_maxsz + \ 717 decode_getattr_maxsz) 718 #define NFS4_enc_getacl_sz (compound_encode_hdr_maxsz + \ 719 encode_sequence_maxsz + \ 720 encode_putfh_maxsz + \ 721 encode_getacl_maxsz) 722 #define NFS4_dec_getacl_sz (compound_decode_hdr_maxsz + \ 723 decode_sequence_maxsz + \ 724 decode_putfh_maxsz + \ 725 decode_getacl_maxsz) 726 #define NFS4_enc_setacl_sz (compound_encode_hdr_maxsz + \ 727 encode_sequence_maxsz + \ 728 encode_putfh_maxsz + \ 729 encode_setacl_maxsz) 730 #define NFS4_dec_setacl_sz (compound_decode_hdr_maxsz + \ 731 decode_sequence_maxsz + \ 732 decode_putfh_maxsz + \ 733 decode_setacl_maxsz) 734 #define NFS4_enc_fs_locations_sz \ 735 (compound_encode_hdr_maxsz + \ 736 encode_sequence_maxsz + \ 737 encode_putfh_maxsz + \ 738 encode_lookup_maxsz + \ 739 encode_fs_locations_maxsz) 740 #define NFS4_dec_fs_locations_sz \ 741 (compound_decode_hdr_maxsz + \ 742 decode_sequence_maxsz + \ 743 decode_putfh_maxsz + \ 744 decode_lookup_maxsz + \ 745 decode_fs_locations_maxsz) 746 #define NFS4_enc_secinfo_sz (compound_encode_hdr_maxsz + \ 747 encode_sequence_maxsz + \ 748 encode_putfh_maxsz + \ 749 encode_secinfo_maxsz) 750 #define NFS4_dec_secinfo_sz (compound_decode_hdr_maxsz + \ 751 decode_sequence_maxsz + \ 752 decode_putfh_maxsz + \ 753 decode_secinfo_maxsz) 754 #if defined(CONFIG_NFS_V4_1) 755 #define NFS4_enc_bind_conn_to_session_sz \ 756 (compound_encode_hdr_maxsz + \ 757 encode_bind_conn_to_session_maxsz) 758 #define NFS4_dec_bind_conn_to_session_sz \ 759 (compound_decode_hdr_maxsz + \ 760 decode_bind_conn_to_session_maxsz) 761 #define NFS4_enc_exchange_id_sz \ 762 (compound_encode_hdr_maxsz + \ 763 encode_exchange_id_maxsz) 764 #define NFS4_dec_exchange_id_sz \ 765 (compound_decode_hdr_maxsz + \ 766 decode_exchange_id_maxsz) 767 #define NFS4_enc_create_session_sz \ 768 (compound_encode_hdr_maxsz + \ 769 encode_create_session_maxsz) 770 #define NFS4_dec_create_session_sz \ 771 (compound_decode_hdr_maxsz + \ 772 decode_create_session_maxsz) 773 #define NFS4_enc_destroy_session_sz (compound_encode_hdr_maxsz + \ 774 encode_destroy_session_maxsz) 775 #define NFS4_dec_destroy_session_sz (compound_decode_hdr_maxsz + \ 776 decode_destroy_session_maxsz) 777 #define NFS4_enc_destroy_clientid_sz (compound_encode_hdr_maxsz + \ 778 encode_destroy_clientid_maxsz) 779 #define NFS4_dec_destroy_clientid_sz (compound_decode_hdr_maxsz + \ 780 decode_destroy_clientid_maxsz) 781 #define NFS4_enc_sequence_sz \ 782 (compound_decode_hdr_maxsz + \ 783 encode_sequence_maxsz) 784 #define NFS4_dec_sequence_sz \ 785 (compound_decode_hdr_maxsz + \ 786 decode_sequence_maxsz) 787 #define NFS4_enc_get_lease_time_sz (compound_encode_hdr_maxsz + \ 788 encode_sequence_maxsz + \ 789 encode_putrootfh_maxsz + \ 790 encode_fsinfo_maxsz) 791 #define NFS4_dec_get_lease_time_sz (compound_decode_hdr_maxsz + \ 792 decode_sequence_maxsz + \ 793 decode_putrootfh_maxsz + \ 794 decode_fsinfo_maxsz) 795 #define NFS4_enc_reclaim_complete_sz (compound_encode_hdr_maxsz + \ 796 encode_sequence_maxsz + \ 797 encode_reclaim_complete_maxsz) 798 #define NFS4_dec_reclaim_complete_sz (compound_decode_hdr_maxsz + \ 799 decode_sequence_maxsz + \ 800 decode_reclaim_complete_maxsz) 801 #define NFS4_enc_getdevicelist_sz (compound_encode_hdr_maxsz + \ 802 encode_sequence_maxsz + \ 803 encode_putfh_maxsz + \ 804 encode_getdevicelist_maxsz) 805 #define NFS4_dec_getdevicelist_sz (compound_decode_hdr_maxsz + \ 806 decode_sequence_maxsz + \ 807 decode_putfh_maxsz + \ 808 decode_getdevicelist_maxsz) 809 #define NFS4_enc_getdeviceinfo_sz (compound_encode_hdr_maxsz + \ 810 encode_sequence_maxsz +\ 811 encode_getdeviceinfo_maxsz) 812 #define NFS4_dec_getdeviceinfo_sz (compound_decode_hdr_maxsz + \ 813 decode_sequence_maxsz + \ 814 decode_getdeviceinfo_maxsz) 815 #define NFS4_enc_layoutget_sz (compound_encode_hdr_maxsz + \ 816 encode_sequence_maxsz + \ 817 encode_putfh_maxsz + \ 818 encode_layoutget_maxsz) 819 #define NFS4_dec_layoutget_sz (compound_decode_hdr_maxsz + \ 820 decode_sequence_maxsz + \ 821 decode_putfh_maxsz + \ 822 decode_layoutget_maxsz) 823 #define NFS4_enc_layoutcommit_sz (compound_encode_hdr_maxsz + \ 824 encode_sequence_maxsz +\ 825 encode_putfh_maxsz + \ 826 encode_layoutcommit_maxsz + \ 827 encode_getattr_maxsz) 828 #define NFS4_dec_layoutcommit_sz (compound_decode_hdr_maxsz + \ 829 decode_sequence_maxsz + \ 830 decode_putfh_maxsz + \ 831 decode_layoutcommit_maxsz + \ 832 decode_getattr_maxsz) 833 #define NFS4_enc_layoutreturn_sz (compound_encode_hdr_maxsz + \ 834 encode_sequence_maxsz + \ 835 encode_putfh_maxsz + \ 836 encode_layoutreturn_maxsz) 837 #define NFS4_dec_layoutreturn_sz (compound_decode_hdr_maxsz + \ 838 decode_sequence_maxsz + \ 839 decode_putfh_maxsz + \ 840 decode_layoutreturn_maxsz) 841 #define NFS4_enc_secinfo_no_name_sz (compound_encode_hdr_maxsz + \ 842 encode_sequence_maxsz + \ 843 encode_putrootfh_maxsz +\ 844 encode_secinfo_no_name_maxsz) 845 #define NFS4_dec_secinfo_no_name_sz (compound_decode_hdr_maxsz + \ 846 decode_sequence_maxsz + \ 847 decode_putrootfh_maxsz + \ 848 decode_secinfo_no_name_maxsz) 849 #define NFS4_enc_test_stateid_sz (compound_encode_hdr_maxsz + \ 850 encode_sequence_maxsz + \ 851 encode_test_stateid_maxsz) 852 #define NFS4_dec_test_stateid_sz (compound_decode_hdr_maxsz + \ 853 decode_sequence_maxsz + \ 854 decode_test_stateid_maxsz) 855 #define NFS4_enc_free_stateid_sz (compound_encode_hdr_maxsz + \ 856 encode_sequence_maxsz + \ 857 encode_free_stateid_maxsz) 858 #define NFS4_dec_free_stateid_sz (compound_decode_hdr_maxsz + \ 859 decode_sequence_maxsz + \ 860 decode_free_stateid_maxsz) 861 862 const u32 nfs41_maxwrite_overhead = ((RPC_MAX_HEADER_WITH_AUTH + 863 compound_encode_hdr_maxsz + 864 encode_sequence_maxsz + 865 encode_putfh_maxsz + 866 encode_getattr_maxsz) * 867 XDR_UNIT); 868 869 const u32 nfs41_maxread_overhead = ((RPC_MAX_HEADER_WITH_AUTH + 870 compound_decode_hdr_maxsz + 871 decode_sequence_maxsz + 872 decode_putfh_maxsz) * 873 XDR_UNIT); 874 875 const u32 nfs41_maxgetdevinfo_overhead = ((RPC_MAX_REPHEADER_WITH_AUTH + 876 compound_decode_hdr_maxsz + 877 decode_sequence_maxsz) * 878 XDR_UNIT); 879 EXPORT_SYMBOL_GPL(nfs41_maxgetdevinfo_overhead); 880 #endif /* CONFIG_NFS_V4_1 */ 881 882 static const umode_t nfs_type2fmt[] = { 883 [NF4BAD] = 0, 884 [NF4REG] = S_IFREG, 885 [NF4DIR] = S_IFDIR, 886 [NF4BLK] = S_IFBLK, 887 [NF4CHR] = S_IFCHR, 888 [NF4LNK] = S_IFLNK, 889 [NF4SOCK] = S_IFSOCK, 890 [NF4FIFO] = S_IFIFO, 891 [NF4ATTRDIR] = 0, 892 [NF4NAMEDATTR] = 0, 893 }; 894 895 struct compound_hdr { 896 int32_t status; 897 uint32_t nops; 898 __be32 * nops_p; 899 uint32_t taglen; 900 char * tag; 901 uint32_t replen; /* expected reply words */ 902 u32 minorversion; 903 }; 904 905 static __be32 *reserve_space(struct xdr_stream *xdr, size_t nbytes) 906 { 907 __be32 *p = xdr_reserve_space(xdr, nbytes); 908 BUG_ON(!p); 909 return p; 910 } 911 912 static void encode_opaque_fixed(struct xdr_stream *xdr, const void *buf, size_t len) 913 { 914 __be32 *p; 915 916 p = xdr_reserve_space(xdr, len); 917 xdr_encode_opaque_fixed(p, buf, len); 918 } 919 920 static void encode_string(struct xdr_stream *xdr, unsigned int len, const char *str) 921 { 922 __be32 *p; 923 924 p = reserve_space(xdr, 4 + len); 925 xdr_encode_opaque(p, str, len); 926 } 927 928 static void encode_uint32(struct xdr_stream *xdr, u32 n) 929 { 930 __be32 *p; 931 932 p = reserve_space(xdr, 4); 933 *p = cpu_to_be32(n); 934 } 935 936 static void encode_uint64(struct xdr_stream *xdr, u64 n) 937 { 938 __be32 *p; 939 940 p = reserve_space(xdr, 8); 941 xdr_encode_hyper(p, n); 942 } 943 944 static void encode_nfs4_seqid(struct xdr_stream *xdr, 945 const struct nfs_seqid *seqid) 946 { 947 encode_uint32(xdr, seqid->sequence->counter); 948 } 949 950 static void encode_compound_hdr(struct xdr_stream *xdr, 951 struct rpc_rqst *req, 952 struct compound_hdr *hdr) 953 { 954 __be32 *p; 955 struct rpc_auth *auth = req->rq_cred->cr_auth; 956 957 /* initialize running count of expected bytes in reply. 958 * NOTE: the replied tag SHOULD be the same is the one sent, 959 * but this is not required as a MUST for the server to do so. */ 960 hdr->replen = RPC_REPHDRSIZE + auth->au_rslack + 3 + hdr->taglen; 961 962 WARN_ON_ONCE(hdr->taglen > NFS4_MAXTAGLEN); 963 encode_string(xdr, hdr->taglen, hdr->tag); 964 p = reserve_space(xdr, 8); 965 *p++ = cpu_to_be32(hdr->minorversion); 966 hdr->nops_p = p; 967 *p = cpu_to_be32(hdr->nops); 968 } 969 970 static void encode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 op, 971 uint32_t replen, 972 struct compound_hdr *hdr) 973 { 974 encode_uint32(xdr, op); 975 hdr->nops++; 976 hdr->replen += replen; 977 } 978 979 static void encode_nops(struct compound_hdr *hdr) 980 { 981 WARN_ON_ONCE(hdr->nops > NFS4_MAX_OPS); 982 *hdr->nops_p = htonl(hdr->nops); 983 } 984 985 static void encode_nfs4_stateid(struct xdr_stream *xdr, const nfs4_stateid *stateid) 986 { 987 encode_opaque_fixed(xdr, stateid, NFS4_STATEID_SIZE); 988 } 989 990 static void encode_nfs4_verifier(struct xdr_stream *xdr, const nfs4_verifier *verf) 991 { 992 encode_opaque_fixed(xdr, verf->data, NFS4_VERIFIER_SIZE); 993 } 994 995 static void encode_attrs(struct xdr_stream *xdr, const struct iattr *iap, 996 const struct nfs4_label *label, 997 const struct nfs_server *server) 998 { 999 char owner_name[IDMAP_NAMESZ]; 1000 char owner_group[IDMAP_NAMESZ]; 1001 int owner_namelen = 0; 1002 int owner_grouplen = 0; 1003 __be32 *p; 1004 unsigned i; 1005 uint32_t len = 0; 1006 uint32_t bmval_len; 1007 uint32_t bmval[3] = { 0 }; 1008 1009 /* 1010 * We reserve enough space to write the entire attribute buffer at once. 1011 * In the worst-case, this would be 1012 * 16(bitmap) + 4(attrlen) + 8(size) + 4(mode) + 4(atime) + 4(mtime) 1013 * = 40 bytes, plus any contribution from variable-length fields 1014 * such as owner/group. 1015 */ 1016 if (iap->ia_valid & ATTR_SIZE) { 1017 bmval[0] |= FATTR4_WORD0_SIZE; 1018 len += 8; 1019 } 1020 if (iap->ia_valid & ATTR_MODE) { 1021 bmval[1] |= FATTR4_WORD1_MODE; 1022 len += 4; 1023 } 1024 if (iap->ia_valid & ATTR_UID) { 1025 owner_namelen = nfs_map_uid_to_name(server, iap->ia_uid, owner_name, IDMAP_NAMESZ); 1026 if (owner_namelen < 0) { 1027 dprintk("nfs: couldn't resolve uid %d to string\n", 1028 from_kuid(&init_user_ns, iap->ia_uid)); 1029 /* XXX */ 1030 strcpy(owner_name, "nobody"); 1031 owner_namelen = sizeof("nobody") - 1; 1032 /* goto out; */ 1033 } 1034 bmval[1] |= FATTR4_WORD1_OWNER; 1035 len += 4 + (XDR_QUADLEN(owner_namelen) << 2); 1036 } 1037 if (iap->ia_valid & ATTR_GID) { 1038 owner_grouplen = nfs_map_gid_to_group(server, iap->ia_gid, owner_group, IDMAP_NAMESZ); 1039 if (owner_grouplen < 0) { 1040 dprintk("nfs: couldn't resolve gid %d to string\n", 1041 from_kgid(&init_user_ns, iap->ia_gid)); 1042 strcpy(owner_group, "nobody"); 1043 owner_grouplen = sizeof("nobody") - 1; 1044 /* goto out; */ 1045 } 1046 bmval[1] |= FATTR4_WORD1_OWNER_GROUP; 1047 len += 4 + (XDR_QUADLEN(owner_grouplen) << 2); 1048 } 1049 if (iap->ia_valid & ATTR_ATIME_SET) { 1050 bmval[1] |= FATTR4_WORD1_TIME_ACCESS_SET; 1051 len += 16; 1052 } else if (iap->ia_valid & ATTR_ATIME) { 1053 bmval[1] |= FATTR4_WORD1_TIME_ACCESS_SET; 1054 len += 4; 1055 } 1056 if (iap->ia_valid & ATTR_MTIME_SET) { 1057 bmval[1] |= FATTR4_WORD1_TIME_MODIFY_SET; 1058 len += 16; 1059 } else if (iap->ia_valid & ATTR_MTIME) { 1060 bmval[1] |= FATTR4_WORD1_TIME_MODIFY_SET; 1061 len += 4; 1062 } 1063 if (label) { 1064 len += 4 + 4 + 4 + (XDR_QUADLEN(label->len) << 2); 1065 bmval[2] |= FATTR4_WORD2_SECURITY_LABEL; 1066 } 1067 1068 if (bmval[2] != 0) 1069 bmval_len = 3; 1070 else if (bmval[1] != 0) 1071 bmval_len = 2; 1072 else 1073 bmval_len = 1; 1074 1075 p = reserve_space(xdr, 4 + (bmval_len << 2) + 4 + len); 1076 1077 *p++ = cpu_to_be32(bmval_len); 1078 for (i = 0; i < bmval_len; i++) 1079 *p++ = cpu_to_be32(bmval[i]); 1080 *p++ = cpu_to_be32(len); 1081 1082 if (bmval[0] & FATTR4_WORD0_SIZE) 1083 p = xdr_encode_hyper(p, iap->ia_size); 1084 if (bmval[1] & FATTR4_WORD1_MODE) 1085 *p++ = cpu_to_be32(iap->ia_mode & S_IALLUGO); 1086 if (bmval[1] & FATTR4_WORD1_OWNER) 1087 p = xdr_encode_opaque(p, owner_name, owner_namelen); 1088 if (bmval[1] & FATTR4_WORD1_OWNER_GROUP) 1089 p = xdr_encode_opaque(p, owner_group, owner_grouplen); 1090 if (bmval[1] & FATTR4_WORD1_TIME_ACCESS_SET) { 1091 if (iap->ia_valid & ATTR_ATIME_SET) { 1092 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME); 1093 p = xdr_encode_hyper(p, (s64)iap->ia_atime.tv_sec); 1094 *p++ = cpu_to_be32(iap->ia_atime.tv_nsec); 1095 } else 1096 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME); 1097 } 1098 if (bmval[1] & FATTR4_WORD1_TIME_MODIFY_SET) { 1099 if (iap->ia_valid & ATTR_MTIME_SET) { 1100 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME); 1101 p = xdr_encode_hyper(p, (s64)iap->ia_mtime.tv_sec); 1102 *p++ = cpu_to_be32(iap->ia_mtime.tv_nsec); 1103 } else 1104 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME); 1105 } 1106 if (bmval[2] & FATTR4_WORD2_SECURITY_LABEL) { 1107 *p++ = cpu_to_be32(label->lfs); 1108 *p++ = cpu_to_be32(label->pi); 1109 *p++ = cpu_to_be32(label->len); 1110 p = xdr_encode_opaque_fixed(p, label->label, label->len); 1111 } 1112 1113 /* out: */ 1114 } 1115 1116 static void encode_access(struct xdr_stream *xdr, u32 access, struct compound_hdr *hdr) 1117 { 1118 encode_op_hdr(xdr, OP_ACCESS, decode_access_maxsz, hdr); 1119 encode_uint32(xdr, access); 1120 } 1121 1122 static void encode_close(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr) 1123 { 1124 encode_op_hdr(xdr, OP_CLOSE, decode_close_maxsz, hdr); 1125 encode_nfs4_seqid(xdr, arg->seqid); 1126 encode_nfs4_stateid(xdr, arg->stateid); 1127 } 1128 1129 static void encode_commit(struct xdr_stream *xdr, const struct nfs_commitargs *args, struct compound_hdr *hdr) 1130 { 1131 __be32 *p; 1132 1133 encode_op_hdr(xdr, OP_COMMIT, decode_commit_maxsz, hdr); 1134 p = reserve_space(xdr, 12); 1135 p = xdr_encode_hyper(p, args->offset); 1136 *p = cpu_to_be32(args->count); 1137 } 1138 1139 static void encode_create(struct xdr_stream *xdr, const struct nfs4_create_arg *create, struct compound_hdr *hdr) 1140 { 1141 __be32 *p; 1142 1143 encode_op_hdr(xdr, OP_CREATE, decode_create_maxsz, hdr); 1144 encode_uint32(xdr, create->ftype); 1145 1146 switch (create->ftype) { 1147 case NF4LNK: 1148 p = reserve_space(xdr, 4); 1149 *p = cpu_to_be32(create->u.symlink.len); 1150 xdr_write_pages(xdr, create->u.symlink.pages, 0, create->u.symlink.len); 1151 break; 1152 1153 case NF4BLK: case NF4CHR: 1154 p = reserve_space(xdr, 8); 1155 *p++ = cpu_to_be32(create->u.device.specdata1); 1156 *p = cpu_to_be32(create->u.device.specdata2); 1157 break; 1158 1159 default: 1160 break; 1161 } 1162 1163 encode_string(xdr, create->name->len, create->name->name); 1164 encode_attrs(xdr, create->attrs, create->label, create->server); 1165 } 1166 1167 static void encode_getattr_one(struct xdr_stream *xdr, uint32_t bitmap, struct compound_hdr *hdr) 1168 { 1169 __be32 *p; 1170 1171 encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr); 1172 p = reserve_space(xdr, 8); 1173 *p++ = cpu_to_be32(1); 1174 *p = cpu_to_be32(bitmap); 1175 } 1176 1177 static void encode_getattr_two(struct xdr_stream *xdr, uint32_t bm0, uint32_t bm1, struct compound_hdr *hdr) 1178 { 1179 __be32 *p; 1180 1181 encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr); 1182 p = reserve_space(xdr, 12); 1183 *p++ = cpu_to_be32(2); 1184 *p++ = cpu_to_be32(bm0); 1185 *p = cpu_to_be32(bm1); 1186 } 1187 1188 static void 1189 encode_getattr_three(struct xdr_stream *xdr, 1190 uint32_t bm0, uint32_t bm1, uint32_t bm2, 1191 struct compound_hdr *hdr) 1192 { 1193 __be32 *p; 1194 1195 encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr); 1196 if (bm2) { 1197 p = reserve_space(xdr, 16); 1198 *p++ = cpu_to_be32(3); 1199 *p++ = cpu_to_be32(bm0); 1200 *p++ = cpu_to_be32(bm1); 1201 *p = cpu_to_be32(bm2); 1202 } else if (bm1) { 1203 p = reserve_space(xdr, 12); 1204 *p++ = cpu_to_be32(2); 1205 *p++ = cpu_to_be32(bm0); 1206 *p = cpu_to_be32(bm1); 1207 } else { 1208 p = reserve_space(xdr, 8); 1209 *p++ = cpu_to_be32(1); 1210 *p = cpu_to_be32(bm0); 1211 } 1212 } 1213 1214 static void encode_getfattr(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr) 1215 { 1216 encode_getattr_three(xdr, bitmask[0] & nfs4_fattr_bitmap[0], 1217 bitmask[1] & nfs4_fattr_bitmap[1], 1218 bitmask[2] & nfs4_fattr_bitmap[2], 1219 hdr); 1220 } 1221 1222 static void encode_getfattr_open(struct xdr_stream *xdr, const u32 *bitmask, 1223 const u32 *open_bitmap, 1224 struct compound_hdr *hdr) 1225 { 1226 encode_getattr_three(xdr, 1227 bitmask[0] & open_bitmap[0], 1228 bitmask[1] & open_bitmap[1], 1229 bitmask[2] & open_bitmap[2], 1230 hdr); 1231 } 1232 1233 static void encode_fsinfo(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr) 1234 { 1235 encode_getattr_three(xdr, 1236 bitmask[0] & nfs4_fsinfo_bitmap[0], 1237 bitmask[1] & nfs4_fsinfo_bitmap[1], 1238 bitmask[2] & nfs4_fsinfo_bitmap[2], 1239 hdr); 1240 } 1241 1242 static void encode_fs_locations(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr) 1243 { 1244 encode_getattr_two(xdr, bitmask[0] & nfs4_fs_locations_bitmap[0], 1245 bitmask[1] & nfs4_fs_locations_bitmap[1], hdr); 1246 } 1247 1248 static void encode_getfh(struct xdr_stream *xdr, struct compound_hdr *hdr) 1249 { 1250 encode_op_hdr(xdr, OP_GETFH, decode_getfh_maxsz, hdr); 1251 } 1252 1253 static void encode_link(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr) 1254 { 1255 encode_op_hdr(xdr, OP_LINK, decode_link_maxsz, hdr); 1256 encode_string(xdr, name->len, name->name); 1257 } 1258 1259 static inline int nfs4_lock_type(struct file_lock *fl, int block) 1260 { 1261 if (fl->fl_type == F_RDLCK) 1262 return block ? NFS4_READW_LT : NFS4_READ_LT; 1263 return block ? NFS4_WRITEW_LT : NFS4_WRITE_LT; 1264 } 1265 1266 static inline uint64_t nfs4_lock_length(struct file_lock *fl) 1267 { 1268 if (fl->fl_end == OFFSET_MAX) 1269 return ~(uint64_t)0; 1270 return fl->fl_end - fl->fl_start + 1; 1271 } 1272 1273 static void encode_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner) 1274 { 1275 __be32 *p; 1276 1277 p = reserve_space(xdr, 32); 1278 p = xdr_encode_hyper(p, lowner->clientid); 1279 *p++ = cpu_to_be32(20); 1280 p = xdr_encode_opaque_fixed(p, "lock id:", 8); 1281 *p++ = cpu_to_be32(lowner->s_dev); 1282 xdr_encode_hyper(p, lowner->id); 1283 } 1284 1285 /* 1286 * opcode,type,reclaim,offset,length,new_lock_owner = 32 1287 * open_seqid,open_stateid,lock_seqid,lock_owner.clientid, lock_owner.id = 40 1288 */ 1289 static void encode_lock(struct xdr_stream *xdr, const struct nfs_lock_args *args, struct compound_hdr *hdr) 1290 { 1291 __be32 *p; 1292 1293 encode_op_hdr(xdr, OP_LOCK, decode_lock_maxsz, hdr); 1294 p = reserve_space(xdr, 28); 1295 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, args->block)); 1296 *p++ = cpu_to_be32(args->reclaim); 1297 p = xdr_encode_hyper(p, args->fl->fl_start); 1298 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl)); 1299 *p = cpu_to_be32(args->new_lock_owner); 1300 if (args->new_lock_owner){ 1301 encode_nfs4_seqid(xdr, args->open_seqid); 1302 encode_nfs4_stateid(xdr, args->open_stateid); 1303 encode_nfs4_seqid(xdr, args->lock_seqid); 1304 encode_lockowner(xdr, &args->lock_owner); 1305 } 1306 else { 1307 encode_nfs4_stateid(xdr, args->lock_stateid); 1308 encode_nfs4_seqid(xdr, args->lock_seqid); 1309 } 1310 } 1311 1312 static void encode_lockt(struct xdr_stream *xdr, const struct nfs_lockt_args *args, struct compound_hdr *hdr) 1313 { 1314 __be32 *p; 1315 1316 encode_op_hdr(xdr, OP_LOCKT, decode_lockt_maxsz, hdr); 1317 p = reserve_space(xdr, 20); 1318 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, 0)); 1319 p = xdr_encode_hyper(p, args->fl->fl_start); 1320 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl)); 1321 encode_lockowner(xdr, &args->lock_owner); 1322 } 1323 1324 static void encode_locku(struct xdr_stream *xdr, const struct nfs_locku_args *args, struct compound_hdr *hdr) 1325 { 1326 __be32 *p; 1327 1328 encode_op_hdr(xdr, OP_LOCKU, decode_locku_maxsz, hdr); 1329 encode_uint32(xdr, nfs4_lock_type(args->fl, 0)); 1330 encode_nfs4_seqid(xdr, args->seqid); 1331 encode_nfs4_stateid(xdr, args->stateid); 1332 p = reserve_space(xdr, 16); 1333 p = xdr_encode_hyper(p, args->fl->fl_start); 1334 xdr_encode_hyper(p, nfs4_lock_length(args->fl)); 1335 } 1336 1337 static void encode_release_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner, struct compound_hdr *hdr) 1338 { 1339 encode_op_hdr(xdr, OP_RELEASE_LOCKOWNER, decode_release_lockowner_maxsz, hdr); 1340 encode_lockowner(xdr, lowner); 1341 } 1342 1343 static void encode_lookup(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr) 1344 { 1345 encode_op_hdr(xdr, OP_LOOKUP, decode_lookup_maxsz, hdr); 1346 encode_string(xdr, name->len, name->name); 1347 } 1348 1349 static void encode_share_access(struct xdr_stream *xdr, fmode_t fmode) 1350 { 1351 __be32 *p; 1352 1353 p = reserve_space(xdr, 8); 1354 switch (fmode & (FMODE_READ|FMODE_WRITE)) { 1355 case FMODE_READ: 1356 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_READ); 1357 break; 1358 case FMODE_WRITE: 1359 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_WRITE); 1360 break; 1361 case FMODE_READ|FMODE_WRITE: 1362 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_BOTH); 1363 break; 1364 default: 1365 *p++ = cpu_to_be32(0); 1366 } 1367 *p = cpu_to_be32(0); /* for linux, share_deny = 0 always */ 1368 } 1369 1370 static inline void encode_openhdr(struct xdr_stream *xdr, const struct nfs_openargs *arg) 1371 { 1372 __be32 *p; 1373 /* 1374 * opcode 4, seqid 4, share_access 4, share_deny 4, clientid 8, ownerlen 4, 1375 * owner 4 = 32 1376 */ 1377 encode_nfs4_seqid(xdr, arg->seqid); 1378 encode_share_access(xdr, arg->fmode); 1379 p = reserve_space(xdr, 36); 1380 p = xdr_encode_hyper(p, arg->clientid); 1381 *p++ = cpu_to_be32(24); 1382 p = xdr_encode_opaque_fixed(p, "open id:", 8); 1383 *p++ = cpu_to_be32(arg->server->s_dev); 1384 *p++ = cpu_to_be32(arg->id.uniquifier); 1385 xdr_encode_hyper(p, arg->id.create_time); 1386 } 1387 1388 static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_openargs *arg) 1389 { 1390 struct iattr dummy; 1391 __be32 *p; 1392 1393 p = reserve_space(xdr, 4); 1394 switch(arg->createmode) { 1395 case NFS4_CREATE_UNCHECKED: 1396 *p = cpu_to_be32(NFS4_CREATE_UNCHECKED); 1397 encode_attrs(xdr, arg->u.attrs, arg->label, arg->server); 1398 break; 1399 case NFS4_CREATE_GUARDED: 1400 *p = cpu_to_be32(NFS4_CREATE_GUARDED); 1401 encode_attrs(xdr, arg->u.attrs, arg->label, arg->server); 1402 break; 1403 case NFS4_CREATE_EXCLUSIVE: 1404 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE); 1405 encode_nfs4_verifier(xdr, &arg->u.verifier); 1406 break; 1407 case NFS4_CREATE_EXCLUSIVE4_1: 1408 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE4_1); 1409 encode_nfs4_verifier(xdr, &arg->u.verifier); 1410 dummy.ia_valid = 0; 1411 encode_attrs(xdr, &dummy, arg->label, arg->server); 1412 } 1413 } 1414 1415 static void encode_opentype(struct xdr_stream *xdr, const struct nfs_openargs *arg) 1416 { 1417 __be32 *p; 1418 1419 p = reserve_space(xdr, 4); 1420 switch (arg->open_flags & O_CREAT) { 1421 case 0: 1422 *p = cpu_to_be32(NFS4_OPEN_NOCREATE); 1423 break; 1424 default: 1425 *p = cpu_to_be32(NFS4_OPEN_CREATE); 1426 encode_createmode(xdr, arg); 1427 } 1428 } 1429 1430 static inline void encode_delegation_type(struct xdr_stream *xdr, fmode_t delegation_type) 1431 { 1432 __be32 *p; 1433 1434 p = reserve_space(xdr, 4); 1435 switch (delegation_type) { 1436 case 0: 1437 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_NONE); 1438 break; 1439 case FMODE_READ: 1440 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_READ); 1441 break; 1442 case FMODE_WRITE|FMODE_READ: 1443 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_WRITE); 1444 break; 1445 default: 1446 BUG(); 1447 } 1448 } 1449 1450 static inline void encode_claim_null(struct xdr_stream *xdr, const struct qstr *name) 1451 { 1452 __be32 *p; 1453 1454 p = reserve_space(xdr, 4); 1455 *p = cpu_to_be32(NFS4_OPEN_CLAIM_NULL); 1456 encode_string(xdr, name->len, name->name); 1457 } 1458 1459 static inline void encode_claim_previous(struct xdr_stream *xdr, fmode_t type) 1460 { 1461 __be32 *p; 1462 1463 p = reserve_space(xdr, 4); 1464 *p = cpu_to_be32(NFS4_OPEN_CLAIM_PREVIOUS); 1465 encode_delegation_type(xdr, type); 1466 } 1467 1468 static inline void encode_claim_delegate_cur(struct xdr_stream *xdr, const struct qstr *name, const nfs4_stateid *stateid) 1469 { 1470 __be32 *p; 1471 1472 p = reserve_space(xdr, 4); 1473 *p = cpu_to_be32(NFS4_OPEN_CLAIM_DELEGATE_CUR); 1474 encode_nfs4_stateid(xdr, stateid); 1475 encode_string(xdr, name->len, name->name); 1476 } 1477 1478 static inline void encode_claim_fh(struct xdr_stream *xdr) 1479 { 1480 __be32 *p; 1481 1482 p = reserve_space(xdr, 4); 1483 *p = cpu_to_be32(NFS4_OPEN_CLAIM_FH); 1484 } 1485 1486 static inline void encode_claim_delegate_cur_fh(struct xdr_stream *xdr, const nfs4_stateid *stateid) 1487 { 1488 __be32 *p; 1489 1490 p = reserve_space(xdr, 4); 1491 *p = cpu_to_be32(NFS4_OPEN_CLAIM_DELEG_CUR_FH); 1492 encode_nfs4_stateid(xdr, stateid); 1493 } 1494 1495 static void encode_open(struct xdr_stream *xdr, const struct nfs_openargs *arg, struct compound_hdr *hdr) 1496 { 1497 encode_op_hdr(xdr, OP_OPEN, decode_open_maxsz, hdr); 1498 encode_openhdr(xdr, arg); 1499 encode_opentype(xdr, arg); 1500 switch (arg->claim) { 1501 case NFS4_OPEN_CLAIM_NULL: 1502 encode_claim_null(xdr, arg->name); 1503 break; 1504 case NFS4_OPEN_CLAIM_PREVIOUS: 1505 encode_claim_previous(xdr, arg->u.delegation_type); 1506 break; 1507 case NFS4_OPEN_CLAIM_DELEGATE_CUR: 1508 encode_claim_delegate_cur(xdr, arg->name, &arg->u.delegation); 1509 break; 1510 case NFS4_OPEN_CLAIM_FH: 1511 encode_claim_fh(xdr); 1512 break; 1513 case NFS4_OPEN_CLAIM_DELEG_CUR_FH: 1514 encode_claim_delegate_cur_fh(xdr, &arg->u.delegation); 1515 break; 1516 default: 1517 BUG(); 1518 } 1519 } 1520 1521 static void encode_open_confirm(struct xdr_stream *xdr, const struct nfs_open_confirmargs *arg, struct compound_hdr *hdr) 1522 { 1523 encode_op_hdr(xdr, OP_OPEN_CONFIRM, decode_open_confirm_maxsz, hdr); 1524 encode_nfs4_stateid(xdr, arg->stateid); 1525 encode_nfs4_seqid(xdr, arg->seqid); 1526 } 1527 1528 static void encode_open_downgrade(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr) 1529 { 1530 encode_op_hdr(xdr, OP_OPEN_DOWNGRADE, decode_open_downgrade_maxsz, hdr); 1531 encode_nfs4_stateid(xdr, arg->stateid); 1532 encode_nfs4_seqid(xdr, arg->seqid); 1533 encode_share_access(xdr, arg->fmode); 1534 } 1535 1536 static void 1537 encode_putfh(struct xdr_stream *xdr, const struct nfs_fh *fh, struct compound_hdr *hdr) 1538 { 1539 encode_op_hdr(xdr, OP_PUTFH, decode_putfh_maxsz, hdr); 1540 encode_string(xdr, fh->size, fh->data); 1541 } 1542 1543 static void encode_putrootfh(struct xdr_stream *xdr, struct compound_hdr *hdr) 1544 { 1545 encode_op_hdr(xdr, OP_PUTROOTFH, decode_putrootfh_maxsz, hdr); 1546 } 1547 1548 static void encode_read(struct xdr_stream *xdr, const struct nfs_readargs *args, struct compound_hdr *hdr) 1549 { 1550 __be32 *p; 1551 1552 encode_op_hdr(xdr, OP_READ, decode_read_maxsz, hdr); 1553 encode_nfs4_stateid(xdr, &args->stateid); 1554 1555 p = reserve_space(xdr, 12); 1556 p = xdr_encode_hyper(p, args->offset); 1557 *p = cpu_to_be32(args->count); 1558 } 1559 1560 static void encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg *readdir, struct rpc_rqst *req, struct compound_hdr *hdr) 1561 { 1562 uint32_t attrs[3] = { 1563 FATTR4_WORD0_RDATTR_ERROR, 1564 FATTR4_WORD1_MOUNTED_ON_FILEID, 1565 }; 1566 uint32_t dircount = readdir->count >> 1; 1567 __be32 *p, verf[2]; 1568 1569 if (readdir->plus) { 1570 attrs[0] |= FATTR4_WORD0_TYPE|FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE| 1571 FATTR4_WORD0_FSID|FATTR4_WORD0_FILEHANDLE|FATTR4_WORD0_FILEID; 1572 attrs[1] |= FATTR4_WORD1_MODE|FATTR4_WORD1_NUMLINKS|FATTR4_WORD1_OWNER| 1573 FATTR4_WORD1_OWNER_GROUP|FATTR4_WORD1_RAWDEV| 1574 FATTR4_WORD1_SPACE_USED|FATTR4_WORD1_TIME_ACCESS| 1575 FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY; 1576 dircount >>= 1; 1577 } 1578 /* Use mounted_on_fileid only if the server supports it */ 1579 if (!(readdir->bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)) 1580 attrs[0] |= FATTR4_WORD0_FILEID; 1581 1582 encode_op_hdr(xdr, OP_READDIR, decode_readdir_maxsz, hdr); 1583 encode_uint64(xdr, readdir->cookie); 1584 encode_nfs4_verifier(xdr, &readdir->verifier); 1585 p = reserve_space(xdr, encode_readdir_space); 1586 *p++ = cpu_to_be32(dircount); 1587 *p++ = cpu_to_be32(readdir->count); 1588 *p++ = cpu_to_be32(encode_readdir_bitmask_sz); 1589 *p++ = cpu_to_be32(attrs[0] & readdir->bitmask[0]); 1590 *p = cpu_to_be32(attrs[1] & readdir->bitmask[1]); 1591 if (encode_readdir_bitmask_sz > 2) { 1592 if (hdr->minorversion > 1) 1593 attrs[2] |= FATTR4_WORD2_SECURITY_LABEL; 1594 p++, *p++ = cpu_to_be32(attrs[2] & readdir->bitmask[2]); 1595 } 1596 memcpy(verf, readdir->verifier.data, sizeof(verf)); 1597 1598 dprintk("%s: cookie = %llu, verifier = %08x:%08x, bitmap = %08x:%08x:%08x\n", 1599 __func__, 1600 (unsigned long long)readdir->cookie, 1601 verf[0], verf[1], 1602 attrs[0] & readdir->bitmask[0], 1603 attrs[1] & readdir->bitmask[1], 1604 attrs[2] & readdir->bitmask[2]); 1605 } 1606 1607 static void encode_readlink(struct xdr_stream *xdr, const struct nfs4_readlink *readlink, struct rpc_rqst *req, struct compound_hdr *hdr) 1608 { 1609 encode_op_hdr(xdr, OP_READLINK, decode_readlink_maxsz, hdr); 1610 } 1611 1612 static void encode_remove(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr) 1613 { 1614 encode_op_hdr(xdr, OP_REMOVE, decode_remove_maxsz, hdr); 1615 encode_string(xdr, name->len, name->name); 1616 } 1617 1618 static void encode_rename(struct xdr_stream *xdr, const struct qstr *oldname, const struct qstr *newname, struct compound_hdr *hdr) 1619 { 1620 encode_op_hdr(xdr, OP_RENAME, decode_rename_maxsz, hdr); 1621 encode_string(xdr, oldname->len, oldname->name); 1622 encode_string(xdr, newname->len, newname->name); 1623 } 1624 1625 static void encode_renew(struct xdr_stream *xdr, clientid4 clid, 1626 struct compound_hdr *hdr) 1627 { 1628 encode_op_hdr(xdr, OP_RENEW, decode_renew_maxsz, hdr); 1629 encode_uint64(xdr, clid); 1630 } 1631 1632 static void 1633 encode_restorefh(struct xdr_stream *xdr, struct compound_hdr *hdr) 1634 { 1635 encode_op_hdr(xdr, OP_RESTOREFH, decode_restorefh_maxsz, hdr); 1636 } 1637 1638 static void 1639 encode_setacl(struct xdr_stream *xdr, struct nfs_setaclargs *arg, struct compound_hdr *hdr) 1640 { 1641 __be32 *p; 1642 1643 encode_op_hdr(xdr, OP_SETATTR, decode_setacl_maxsz, hdr); 1644 encode_nfs4_stateid(xdr, &zero_stateid); 1645 p = reserve_space(xdr, 2*4); 1646 *p++ = cpu_to_be32(1); 1647 *p = cpu_to_be32(FATTR4_WORD0_ACL); 1648 p = reserve_space(xdr, 4); 1649 *p = cpu_to_be32(arg->acl_len); 1650 xdr_write_pages(xdr, arg->acl_pages, arg->acl_pgbase, arg->acl_len); 1651 } 1652 1653 static void 1654 encode_savefh(struct xdr_stream *xdr, struct compound_hdr *hdr) 1655 { 1656 encode_op_hdr(xdr, OP_SAVEFH, decode_savefh_maxsz, hdr); 1657 } 1658 1659 static void encode_setattr(struct xdr_stream *xdr, const struct nfs_setattrargs *arg, const struct nfs_server *server, struct compound_hdr *hdr) 1660 { 1661 encode_op_hdr(xdr, OP_SETATTR, decode_setattr_maxsz, hdr); 1662 encode_nfs4_stateid(xdr, &arg->stateid); 1663 encode_attrs(xdr, arg->iap, arg->label, server); 1664 } 1665 1666 static void encode_setclientid(struct xdr_stream *xdr, const struct nfs4_setclientid *setclientid, struct compound_hdr *hdr) 1667 { 1668 __be32 *p; 1669 1670 encode_op_hdr(xdr, OP_SETCLIENTID, decode_setclientid_maxsz, hdr); 1671 encode_nfs4_verifier(xdr, setclientid->sc_verifier); 1672 1673 encode_string(xdr, setclientid->sc_name_len, setclientid->sc_name); 1674 p = reserve_space(xdr, 4); 1675 *p = cpu_to_be32(setclientid->sc_prog); 1676 encode_string(xdr, setclientid->sc_netid_len, setclientid->sc_netid); 1677 encode_string(xdr, setclientid->sc_uaddr_len, setclientid->sc_uaddr); 1678 p = reserve_space(xdr, 4); 1679 *p = cpu_to_be32(setclientid->sc_cb_ident); 1680 } 1681 1682 static void encode_setclientid_confirm(struct xdr_stream *xdr, const struct nfs4_setclientid_res *arg, struct compound_hdr *hdr) 1683 { 1684 encode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM, 1685 decode_setclientid_confirm_maxsz, hdr); 1686 encode_uint64(xdr, arg->clientid); 1687 encode_nfs4_verifier(xdr, &arg->confirm); 1688 } 1689 1690 static void encode_write(struct xdr_stream *xdr, const struct nfs_writeargs *args, struct compound_hdr *hdr) 1691 { 1692 __be32 *p; 1693 1694 encode_op_hdr(xdr, OP_WRITE, decode_write_maxsz, hdr); 1695 encode_nfs4_stateid(xdr, &args->stateid); 1696 1697 p = reserve_space(xdr, 16); 1698 p = xdr_encode_hyper(p, args->offset); 1699 *p++ = cpu_to_be32(args->stable); 1700 *p = cpu_to_be32(args->count); 1701 1702 xdr_write_pages(xdr, args->pages, args->pgbase, args->count); 1703 } 1704 1705 static void encode_delegreturn(struct xdr_stream *xdr, const nfs4_stateid *stateid, struct compound_hdr *hdr) 1706 { 1707 encode_op_hdr(xdr, OP_DELEGRETURN, decode_delegreturn_maxsz, hdr); 1708 encode_nfs4_stateid(xdr, stateid); 1709 } 1710 1711 static void encode_secinfo(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr) 1712 { 1713 encode_op_hdr(xdr, OP_SECINFO, decode_secinfo_maxsz, hdr); 1714 encode_string(xdr, name->len, name->name); 1715 } 1716 1717 #if defined(CONFIG_NFS_V4_1) 1718 /* NFSv4.1 operations */ 1719 static void encode_bind_conn_to_session(struct xdr_stream *xdr, 1720 struct nfs4_session *session, 1721 struct compound_hdr *hdr) 1722 { 1723 __be32 *p; 1724 1725 encode_op_hdr(xdr, OP_BIND_CONN_TO_SESSION, 1726 decode_bind_conn_to_session_maxsz, hdr); 1727 encode_opaque_fixed(xdr, session->sess_id.data, NFS4_MAX_SESSIONID_LEN); 1728 p = xdr_reserve_space(xdr, 8); 1729 *p++ = cpu_to_be32(NFS4_CDFC4_BACK_OR_BOTH); 1730 *p = 0; /* use_conn_in_rdma_mode = False */ 1731 } 1732 1733 static void encode_op_map(struct xdr_stream *xdr, struct nfs4_op_map *op_map) 1734 { 1735 unsigned int i; 1736 encode_uint32(xdr, NFS4_OP_MAP_NUM_WORDS); 1737 for (i = 0; i < NFS4_OP_MAP_NUM_WORDS; i++) 1738 encode_uint32(xdr, op_map->u.words[i]); 1739 } 1740 1741 static void encode_exchange_id(struct xdr_stream *xdr, 1742 struct nfs41_exchange_id_args *args, 1743 struct compound_hdr *hdr) 1744 { 1745 __be32 *p; 1746 char impl_name[IMPL_NAME_LIMIT]; 1747 int len = 0; 1748 1749 encode_op_hdr(xdr, OP_EXCHANGE_ID, decode_exchange_id_maxsz, hdr); 1750 encode_nfs4_verifier(xdr, args->verifier); 1751 1752 encode_string(xdr, args->id_len, args->id); 1753 1754 encode_uint32(xdr, args->flags); 1755 encode_uint32(xdr, args->state_protect.how); 1756 1757 switch (args->state_protect.how) { 1758 case SP4_NONE: 1759 break; 1760 case SP4_MACH_CRED: 1761 encode_op_map(xdr, &args->state_protect.enforce); 1762 encode_op_map(xdr, &args->state_protect.allow); 1763 break; 1764 default: 1765 WARN_ON_ONCE(1); 1766 break; 1767 } 1768 1769 if (send_implementation_id && 1770 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN) > 1 && 1771 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN) 1772 <= sizeof(impl_name) + 1) 1773 len = snprintf(impl_name, sizeof(impl_name), "%s %s %s %s", 1774 utsname()->sysname, utsname()->release, 1775 utsname()->version, utsname()->machine); 1776 1777 if (len > 0) { 1778 encode_uint32(xdr, 1); /* implementation id array length=1 */ 1779 1780 encode_string(xdr, 1781 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN) - 1, 1782 CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN); 1783 encode_string(xdr, len, impl_name); 1784 /* just send zeros for nii_date - the date is in nii_name */ 1785 p = reserve_space(xdr, 12); 1786 p = xdr_encode_hyper(p, 0); 1787 *p = cpu_to_be32(0); 1788 } else 1789 encode_uint32(xdr, 0); /* implementation id array length=0 */ 1790 } 1791 1792 static void encode_create_session(struct xdr_stream *xdr, 1793 struct nfs41_create_session_args *args, 1794 struct compound_hdr *hdr) 1795 { 1796 __be32 *p; 1797 char machine_name[NFS4_MAX_MACHINE_NAME_LEN]; 1798 uint32_t len; 1799 struct nfs_client *clp = args->client; 1800 struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id); 1801 u32 max_resp_sz_cached; 1802 1803 /* 1804 * Assumes OPEN is the biggest non-idempotent compound. 1805 * 2 is the verifier. 1806 */ 1807 max_resp_sz_cached = (NFS4_dec_open_sz + RPC_REPHDRSIZE + 1808 RPC_MAX_AUTH_SIZE + 2) * XDR_UNIT; 1809 1810 len = scnprintf(machine_name, sizeof(machine_name), "%s", 1811 clp->cl_ipaddr); 1812 1813 encode_op_hdr(xdr, OP_CREATE_SESSION, decode_create_session_maxsz, hdr); 1814 p = reserve_space(xdr, 16 + 2*28 + 20 + len + 12); 1815 p = xdr_encode_hyper(p, clp->cl_clientid); 1816 *p++ = cpu_to_be32(clp->cl_seqid); /*Sequence id */ 1817 *p++ = cpu_to_be32(args->flags); /*flags */ 1818 1819 /* Fore Channel */ 1820 *p++ = cpu_to_be32(0); /* header padding size */ 1821 *p++ = cpu_to_be32(args->fc_attrs.max_rqst_sz); /* max req size */ 1822 *p++ = cpu_to_be32(args->fc_attrs.max_resp_sz); /* max resp size */ 1823 *p++ = cpu_to_be32(max_resp_sz_cached); /* Max resp sz cached */ 1824 *p++ = cpu_to_be32(args->fc_attrs.max_ops); /* max operations */ 1825 *p++ = cpu_to_be32(args->fc_attrs.max_reqs); /* max requests */ 1826 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */ 1827 1828 /* Back Channel */ 1829 *p++ = cpu_to_be32(0); /* header padding size */ 1830 *p++ = cpu_to_be32(args->bc_attrs.max_rqst_sz); /* max req size */ 1831 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz); /* max resp size */ 1832 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz_cached); /* Max resp sz cached */ 1833 *p++ = cpu_to_be32(args->bc_attrs.max_ops); /* max operations */ 1834 *p++ = cpu_to_be32(args->bc_attrs.max_reqs); /* max requests */ 1835 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */ 1836 1837 *p++ = cpu_to_be32(args->cb_program); /* cb_program */ 1838 *p++ = cpu_to_be32(1); 1839 *p++ = cpu_to_be32(RPC_AUTH_UNIX); /* auth_sys */ 1840 1841 /* authsys_parms rfc1831 */ 1842 *p++ = cpu_to_be32(nn->boot_time.tv_nsec); /* stamp */ 1843 p = xdr_encode_opaque(p, machine_name, len); 1844 *p++ = cpu_to_be32(0); /* UID */ 1845 *p++ = cpu_to_be32(0); /* GID */ 1846 *p = cpu_to_be32(0); /* No more gids */ 1847 } 1848 1849 static void encode_destroy_session(struct xdr_stream *xdr, 1850 struct nfs4_session *session, 1851 struct compound_hdr *hdr) 1852 { 1853 encode_op_hdr(xdr, OP_DESTROY_SESSION, decode_destroy_session_maxsz, hdr); 1854 encode_opaque_fixed(xdr, session->sess_id.data, NFS4_MAX_SESSIONID_LEN); 1855 } 1856 1857 static void encode_destroy_clientid(struct xdr_stream *xdr, 1858 uint64_t clientid, 1859 struct compound_hdr *hdr) 1860 { 1861 encode_op_hdr(xdr, OP_DESTROY_CLIENTID, decode_destroy_clientid_maxsz, hdr); 1862 encode_uint64(xdr, clientid); 1863 } 1864 1865 static void encode_reclaim_complete(struct xdr_stream *xdr, 1866 struct nfs41_reclaim_complete_args *args, 1867 struct compound_hdr *hdr) 1868 { 1869 encode_op_hdr(xdr, OP_RECLAIM_COMPLETE, decode_reclaim_complete_maxsz, hdr); 1870 encode_uint32(xdr, args->one_fs); 1871 } 1872 #endif /* CONFIG_NFS_V4_1 */ 1873 1874 static void encode_sequence(struct xdr_stream *xdr, 1875 const struct nfs4_sequence_args *args, 1876 struct compound_hdr *hdr) 1877 { 1878 #if defined(CONFIG_NFS_V4_1) 1879 struct nfs4_session *session; 1880 struct nfs4_slot_table *tp; 1881 struct nfs4_slot *slot = args->sa_slot; 1882 __be32 *p; 1883 1884 tp = slot->table; 1885 session = tp->session; 1886 if (!session) 1887 return; 1888 1889 encode_op_hdr(xdr, OP_SEQUENCE, decode_sequence_maxsz, hdr); 1890 1891 /* 1892 * Sessionid + seqid + slotid + max slotid + cache_this 1893 */ 1894 dprintk("%s: sessionid=%u:%u:%u:%u seqid=%d slotid=%d " 1895 "max_slotid=%d cache_this=%d\n", 1896 __func__, 1897 ((u32 *)session->sess_id.data)[0], 1898 ((u32 *)session->sess_id.data)[1], 1899 ((u32 *)session->sess_id.data)[2], 1900 ((u32 *)session->sess_id.data)[3], 1901 slot->seq_nr, slot->slot_nr, 1902 tp->highest_used_slotid, args->sa_cache_this); 1903 p = reserve_space(xdr, NFS4_MAX_SESSIONID_LEN + 16); 1904 p = xdr_encode_opaque_fixed(p, session->sess_id.data, NFS4_MAX_SESSIONID_LEN); 1905 *p++ = cpu_to_be32(slot->seq_nr); 1906 *p++ = cpu_to_be32(slot->slot_nr); 1907 *p++ = cpu_to_be32(tp->highest_used_slotid); 1908 *p = cpu_to_be32(args->sa_cache_this); 1909 #endif /* CONFIG_NFS_V4_1 */ 1910 } 1911 1912 #ifdef CONFIG_NFS_V4_1 1913 static void 1914 encode_getdevicelist(struct xdr_stream *xdr, 1915 const struct nfs4_getdevicelist_args *args, 1916 struct compound_hdr *hdr) 1917 { 1918 __be32 *p; 1919 nfs4_verifier dummy = { 1920 .data = "dummmmmy", 1921 }; 1922 1923 encode_op_hdr(xdr, OP_GETDEVICELIST, decode_getdevicelist_maxsz, hdr); 1924 p = reserve_space(xdr, 16); 1925 *p++ = cpu_to_be32(args->layoutclass); 1926 *p++ = cpu_to_be32(NFS4_PNFS_GETDEVLIST_MAXNUM); 1927 xdr_encode_hyper(p, 0ULL); /* cookie */ 1928 encode_nfs4_verifier(xdr, &dummy); 1929 } 1930 1931 static void 1932 encode_getdeviceinfo(struct xdr_stream *xdr, 1933 const struct nfs4_getdeviceinfo_args *args, 1934 struct compound_hdr *hdr) 1935 { 1936 __be32 *p; 1937 1938 encode_op_hdr(xdr, OP_GETDEVICEINFO, decode_getdeviceinfo_maxsz, hdr); 1939 p = reserve_space(xdr, 12 + NFS4_DEVICEID4_SIZE); 1940 p = xdr_encode_opaque_fixed(p, args->pdev->dev_id.data, 1941 NFS4_DEVICEID4_SIZE); 1942 *p++ = cpu_to_be32(args->pdev->layout_type); 1943 *p++ = cpu_to_be32(args->pdev->maxcount); /* gdia_maxcount */ 1944 *p++ = cpu_to_be32(0); /* bitmap length 0 */ 1945 } 1946 1947 static void 1948 encode_layoutget(struct xdr_stream *xdr, 1949 const struct nfs4_layoutget_args *args, 1950 struct compound_hdr *hdr) 1951 { 1952 __be32 *p; 1953 1954 encode_op_hdr(xdr, OP_LAYOUTGET, decode_layoutget_maxsz, hdr); 1955 p = reserve_space(xdr, 36); 1956 *p++ = cpu_to_be32(0); /* Signal layout available */ 1957 *p++ = cpu_to_be32(args->type); 1958 *p++ = cpu_to_be32(args->range.iomode); 1959 p = xdr_encode_hyper(p, args->range.offset); 1960 p = xdr_encode_hyper(p, args->range.length); 1961 p = xdr_encode_hyper(p, args->minlength); 1962 encode_nfs4_stateid(xdr, &args->stateid); 1963 encode_uint32(xdr, args->maxcount); 1964 1965 dprintk("%s: 1st type:0x%x iomode:%d off:%lu len:%lu mc:%d\n", 1966 __func__, 1967 args->type, 1968 args->range.iomode, 1969 (unsigned long)args->range.offset, 1970 (unsigned long)args->range.length, 1971 args->maxcount); 1972 } 1973 1974 static int 1975 encode_layoutcommit(struct xdr_stream *xdr, 1976 struct inode *inode, 1977 const struct nfs4_layoutcommit_args *args, 1978 struct compound_hdr *hdr) 1979 { 1980 __be32 *p; 1981 1982 dprintk("%s: lbw: %llu type: %d\n", __func__, args->lastbytewritten, 1983 NFS_SERVER(args->inode)->pnfs_curr_ld->id); 1984 1985 encode_op_hdr(xdr, OP_LAYOUTCOMMIT, decode_layoutcommit_maxsz, hdr); 1986 p = reserve_space(xdr, 20); 1987 /* Only whole file layouts */ 1988 p = xdr_encode_hyper(p, 0); /* offset */ 1989 p = xdr_encode_hyper(p, args->lastbytewritten + 1); /* length */ 1990 *p = cpu_to_be32(0); /* reclaim */ 1991 encode_nfs4_stateid(xdr, &args->stateid); 1992 p = reserve_space(xdr, 20); 1993 *p++ = cpu_to_be32(1); /* newoffset = TRUE */ 1994 p = xdr_encode_hyper(p, args->lastbytewritten); 1995 *p++ = cpu_to_be32(0); /* Never send time_modify_changed */ 1996 *p++ = cpu_to_be32(NFS_SERVER(args->inode)->pnfs_curr_ld->id);/* type */ 1997 1998 if (NFS_SERVER(inode)->pnfs_curr_ld->encode_layoutcommit) 1999 NFS_SERVER(inode)->pnfs_curr_ld->encode_layoutcommit( 2000 NFS_I(inode)->layout, xdr, args); 2001 else 2002 encode_uint32(xdr, 0); /* no layout-type payload */ 2003 2004 return 0; 2005 } 2006 2007 static void 2008 encode_layoutreturn(struct xdr_stream *xdr, 2009 const struct nfs4_layoutreturn_args *args, 2010 struct compound_hdr *hdr) 2011 { 2012 __be32 *p; 2013 2014 encode_op_hdr(xdr, OP_LAYOUTRETURN, decode_layoutreturn_maxsz, hdr); 2015 p = reserve_space(xdr, 16); 2016 *p++ = cpu_to_be32(0); /* reclaim. always 0 for now */ 2017 *p++ = cpu_to_be32(args->layout_type); 2018 *p++ = cpu_to_be32(IOMODE_ANY); 2019 *p = cpu_to_be32(RETURN_FILE); 2020 p = reserve_space(xdr, 16); 2021 p = xdr_encode_hyper(p, 0); 2022 p = xdr_encode_hyper(p, NFS4_MAX_UINT64); 2023 spin_lock(&args->inode->i_lock); 2024 encode_nfs4_stateid(xdr, &args->stateid); 2025 spin_unlock(&args->inode->i_lock); 2026 if (NFS_SERVER(args->inode)->pnfs_curr_ld->encode_layoutreturn) { 2027 NFS_SERVER(args->inode)->pnfs_curr_ld->encode_layoutreturn( 2028 NFS_I(args->inode)->layout, xdr, args); 2029 } else 2030 encode_uint32(xdr, 0); 2031 } 2032 2033 static int 2034 encode_secinfo_no_name(struct xdr_stream *xdr, 2035 const struct nfs41_secinfo_no_name_args *args, 2036 struct compound_hdr *hdr) 2037 { 2038 encode_op_hdr(xdr, OP_SECINFO_NO_NAME, decode_secinfo_no_name_maxsz, hdr); 2039 encode_uint32(xdr, args->style); 2040 return 0; 2041 } 2042 2043 static void encode_test_stateid(struct xdr_stream *xdr, 2044 struct nfs41_test_stateid_args *args, 2045 struct compound_hdr *hdr) 2046 { 2047 encode_op_hdr(xdr, OP_TEST_STATEID, decode_test_stateid_maxsz, hdr); 2048 encode_uint32(xdr, 1); 2049 encode_nfs4_stateid(xdr, args->stateid); 2050 } 2051 2052 static void encode_free_stateid(struct xdr_stream *xdr, 2053 struct nfs41_free_stateid_args *args, 2054 struct compound_hdr *hdr) 2055 { 2056 encode_op_hdr(xdr, OP_FREE_STATEID, decode_free_stateid_maxsz, hdr); 2057 encode_nfs4_stateid(xdr, &args->stateid); 2058 } 2059 #endif /* CONFIG_NFS_V4_1 */ 2060 2061 /* 2062 * END OF "GENERIC" ENCODE ROUTINES. 2063 */ 2064 2065 static u32 nfs4_xdr_minorversion(const struct nfs4_sequence_args *args) 2066 { 2067 #if defined(CONFIG_NFS_V4_1) 2068 struct nfs4_session *session = args->sa_slot->table->session; 2069 if (session) 2070 return session->clp->cl_mvops->minor_version; 2071 #endif /* CONFIG_NFS_V4_1 */ 2072 return 0; 2073 } 2074 2075 /* 2076 * Encode an ACCESS request 2077 */ 2078 static void nfs4_xdr_enc_access(struct rpc_rqst *req, struct xdr_stream *xdr, 2079 const struct nfs4_accessargs *args) 2080 { 2081 struct compound_hdr hdr = { 2082 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2083 }; 2084 2085 encode_compound_hdr(xdr, req, &hdr); 2086 encode_sequence(xdr, &args->seq_args, &hdr); 2087 encode_putfh(xdr, args->fh, &hdr); 2088 encode_access(xdr, args->access, &hdr); 2089 encode_getfattr(xdr, args->bitmask, &hdr); 2090 encode_nops(&hdr); 2091 } 2092 2093 /* 2094 * Encode LOOKUP request 2095 */ 2096 static void nfs4_xdr_enc_lookup(struct rpc_rqst *req, struct xdr_stream *xdr, 2097 const struct nfs4_lookup_arg *args) 2098 { 2099 struct compound_hdr hdr = { 2100 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2101 }; 2102 2103 encode_compound_hdr(xdr, req, &hdr); 2104 encode_sequence(xdr, &args->seq_args, &hdr); 2105 encode_putfh(xdr, args->dir_fh, &hdr); 2106 encode_lookup(xdr, args->name, &hdr); 2107 encode_getfh(xdr, &hdr); 2108 encode_getfattr(xdr, args->bitmask, &hdr); 2109 encode_nops(&hdr); 2110 } 2111 2112 /* 2113 * Encode LOOKUP_ROOT request 2114 */ 2115 static void nfs4_xdr_enc_lookup_root(struct rpc_rqst *req, 2116 struct xdr_stream *xdr, 2117 const struct nfs4_lookup_root_arg *args) 2118 { 2119 struct compound_hdr hdr = { 2120 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2121 }; 2122 2123 encode_compound_hdr(xdr, req, &hdr); 2124 encode_sequence(xdr, &args->seq_args, &hdr); 2125 encode_putrootfh(xdr, &hdr); 2126 encode_getfh(xdr, &hdr); 2127 encode_getfattr(xdr, args->bitmask, &hdr); 2128 encode_nops(&hdr); 2129 } 2130 2131 /* 2132 * Encode REMOVE request 2133 */ 2134 static void nfs4_xdr_enc_remove(struct rpc_rqst *req, struct xdr_stream *xdr, 2135 const struct nfs_removeargs *args) 2136 { 2137 struct compound_hdr hdr = { 2138 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2139 }; 2140 2141 encode_compound_hdr(xdr, req, &hdr); 2142 encode_sequence(xdr, &args->seq_args, &hdr); 2143 encode_putfh(xdr, args->fh, &hdr); 2144 encode_remove(xdr, &args->name, &hdr); 2145 encode_nops(&hdr); 2146 } 2147 2148 /* 2149 * Encode RENAME request 2150 */ 2151 static void nfs4_xdr_enc_rename(struct rpc_rqst *req, struct xdr_stream *xdr, 2152 const struct nfs_renameargs *args) 2153 { 2154 struct compound_hdr hdr = { 2155 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2156 }; 2157 2158 encode_compound_hdr(xdr, req, &hdr); 2159 encode_sequence(xdr, &args->seq_args, &hdr); 2160 encode_putfh(xdr, args->old_dir, &hdr); 2161 encode_savefh(xdr, &hdr); 2162 encode_putfh(xdr, args->new_dir, &hdr); 2163 encode_rename(xdr, args->old_name, args->new_name, &hdr); 2164 encode_nops(&hdr); 2165 } 2166 2167 /* 2168 * Encode LINK request 2169 */ 2170 static void nfs4_xdr_enc_link(struct rpc_rqst *req, struct xdr_stream *xdr, 2171 const struct nfs4_link_arg *args) 2172 { 2173 struct compound_hdr hdr = { 2174 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2175 }; 2176 2177 encode_compound_hdr(xdr, req, &hdr); 2178 encode_sequence(xdr, &args->seq_args, &hdr); 2179 encode_putfh(xdr, args->fh, &hdr); 2180 encode_savefh(xdr, &hdr); 2181 encode_putfh(xdr, args->dir_fh, &hdr); 2182 encode_link(xdr, args->name, &hdr); 2183 encode_restorefh(xdr, &hdr); 2184 encode_getfattr(xdr, args->bitmask, &hdr); 2185 encode_nops(&hdr); 2186 } 2187 2188 /* 2189 * Encode CREATE request 2190 */ 2191 static void nfs4_xdr_enc_create(struct rpc_rqst *req, struct xdr_stream *xdr, 2192 const struct nfs4_create_arg *args) 2193 { 2194 struct compound_hdr hdr = { 2195 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2196 }; 2197 2198 encode_compound_hdr(xdr, req, &hdr); 2199 encode_sequence(xdr, &args->seq_args, &hdr); 2200 encode_putfh(xdr, args->dir_fh, &hdr); 2201 encode_create(xdr, args, &hdr); 2202 encode_getfh(xdr, &hdr); 2203 encode_getfattr(xdr, args->bitmask, &hdr); 2204 encode_nops(&hdr); 2205 } 2206 2207 /* 2208 * Encode SYMLINK request 2209 */ 2210 static void nfs4_xdr_enc_symlink(struct rpc_rqst *req, struct xdr_stream *xdr, 2211 const struct nfs4_create_arg *args) 2212 { 2213 nfs4_xdr_enc_create(req, xdr, args); 2214 } 2215 2216 /* 2217 * Encode GETATTR request 2218 */ 2219 static void nfs4_xdr_enc_getattr(struct rpc_rqst *req, struct xdr_stream *xdr, 2220 const struct nfs4_getattr_arg *args) 2221 { 2222 struct compound_hdr hdr = { 2223 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2224 }; 2225 2226 encode_compound_hdr(xdr, req, &hdr); 2227 encode_sequence(xdr, &args->seq_args, &hdr); 2228 encode_putfh(xdr, args->fh, &hdr); 2229 encode_getfattr(xdr, args->bitmask, &hdr); 2230 encode_nops(&hdr); 2231 } 2232 2233 /* 2234 * Encode a CLOSE request 2235 */ 2236 static void nfs4_xdr_enc_close(struct rpc_rqst *req, struct xdr_stream *xdr, 2237 struct nfs_closeargs *args) 2238 { 2239 struct compound_hdr hdr = { 2240 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2241 }; 2242 2243 encode_compound_hdr(xdr, req, &hdr); 2244 encode_sequence(xdr, &args->seq_args, &hdr); 2245 encode_putfh(xdr, args->fh, &hdr); 2246 encode_close(xdr, args, &hdr); 2247 encode_getfattr(xdr, args->bitmask, &hdr); 2248 encode_nops(&hdr); 2249 } 2250 2251 /* 2252 * Encode an OPEN request 2253 */ 2254 static void nfs4_xdr_enc_open(struct rpc_rqst *req, struct xdr_stream *xdr, 2255 struct nfs_openargs *args) 2256 { 2257 struct compound_hdr hdr = { 2258 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2259 }; 2260 2261 encode_compound_hdr(xdr, req, &hdr); 2262 encode_sequence(xdr, &args->seq_args, &hdr); 2263 encode_putfh(xdr, args->fh, &hdr); 2264 encode_open(xdr, args, &hdr); 2265 encode_getfh(xdr, &hdr); 2266 if (args->access) 2267 encode_access(xdr, args->access, &hdr); 2268 encode_getfattr_open(xdr, args->bitmask, args->open_bitmap, &hdr); 2269 encode_nops(&hdr); 2270 } 2271 2272 /* 2273 * Encode an OPEN_CONFIRM request 2274 */ 2275 static void nfs4_xdr_enc_open_confirm(struct rpc_rqst *req, 2276 struct xdr_stream *xdr, 2277 struct nfs_open_confirmargs *args) 2278 { 2279 struct compound_hdr hdr = { 2280 .nops = 0, 2281 }; 2282 2283 encode_compound_hdr(xdr, req, &hdr); 2284 encode_putfh(xdr, args->fh, &hdr); 2285 encode_open_confirm(xdr, args, &hdr); 2286 encode_nops(&hdr); 2287 } 2288 2289 /* 2290 * Encode an OPEN request with no attributes. 2291 */ 2292 static void nfs4_xdr_enc_open_noattr(struct rpc_rqst *req, 2293 struct xdr_stream *xdr, 2294 struct nfs_openargs *args) 2295 { 2296 struct compound_hdr hdr = { 2297 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2298 }; 2299 2300 encode_compound_hdr(xdr, req, &hdr); 2301 encode_sequence(xdr, &args->seq_args, &hdr); 2302 encode_putfh(xdr, args->fh, &hdr); 2303 encode_open(xdr, args, &hdr); 2304 if (args->access) 2305 encode_access(xdr, args->access, &hdr); 2306 encode_getfattr_open(xdr, args->bitmask, args->open_bitmap, &hdr); 2307 encode_nops(&hdr); 2308 } 2309 2310 /* 2311 * Encode an OPEN_DOWNGRADE request 2312 */ 2313 static void nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req, 2314 struct xdr_stream *xdr, 2315 struct nfs_closeargs *args) 2316 { 2317 struct compound_hdr hdr = { 2318 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2319 }; 2320 2321 encode_compound_hdr(xdr, req, &hdr); 2322 encode_sequence(xdr, &args->seq_args, &hdr); 2323 encode_putfh(xdr, args->fh, &hdr); 2324 encode_open_downgrade(xdr, args, &hdr); 2325 encode_getfattr(xdr, args->bitmask, &hdr); 2326 encode_nops(&hdr); 2327 } 2328 2329 /* 2330 * Encode a LOCK request 2331 */ 2332 static void nfs4_xdr_enc_lock(struct rpc_rqst *req, struct xdr_stream *xdr, 2333 struct nfs_lock_args *args) 2334 { 2335 struct compound_hdr hdr = { 2336 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2337 }; 2338 2339 encode_compound_hdr(xdr, req, &hdr); 2340 encode_sequence(xdr, &args->seq_args, &hdr); 2341 encode_putfh(xdr, args->fh, &hdr); 2342 encode_lock(xdr, args, &hdr); 2343 encode_nops(&hdr); 2344 } 2345 2346 /* 2347 * Encode a LOCKT request 2348 */ 2349 static void nfs4_xdr_enc_lockt(struct rpc_rqst *req, struct xdr_stream *xdr, 2350 struct nfs_lockt_args *args) 2351 { 2352 struct compound_hdr hdr = { 2353 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2354 }; 2355 2356 encode_compound_hdr(xdr, req, &hdr); 2357 encode_sequence(xdr, &args->seq_args, &hdr); 2358 encode_putfh(xdr, args->fh, &hdr); 2359 encode_lockt(xdr, args, &hdr); 2360 encode_nops(&hdr); 2361 } 2362 2363 /* 2364 * Encode a LOCKU request 2365 */ 2366 static void nfs4_xdr_enc_locku(struct rpc_rqst *req, struct xdr_stream *xdr, 2367 struct nfs_locku_args *args) 2368 { 2369 struct compound_hdr hdr = { 2370 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2371 }; 2372 2373 encode_compound_hdr(xdr, req, &hdr); 2374 encode_sequence(xdr, &args->seq_args, &hdr); 2375 encode_putfh(xdr, args->fh, &hdr); 2376 encode_locku(xdr, args, &hdr); 2377 encode_nops(&hdr); 2378 } 2379 2380 static void nfs4_xdr_enc_release_lockowner(struct rpc_rqst *req, 2381 struct xdr_stream *xdr, 2382 struct nfs_release_lockowner_args *args) 2383 { 2384 struct compound_hdr hdr = { 2385 .minorversion = 0, 2386 }; 2387 2388 encode_compound_hdr(xdr, req, &hdr); 2389 encode_release_lockowner(xdr, &args->lock_owner, &hdr); 2390 encode_nops(&hdr); 2391 } 2392 2393 /* 2394 * Encode a READLINK request 2395 */ 2396 static void nfs4_xdr_enc_readlink(struct rpc_rqst *req, struct xdr_stream *xdr, 2397 const struct nfs4_readlink *args) 2398 { 2399 struct compound_hdr hdr = { 2400 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2401 }; 2402 2403 encode_compound_hdr(xdr, req, &hdr); 2404 encode_sequence(xdr, &args->seq_args, &hdr); 2405 encode_putfh(xdr, args->fh, &hdr); 2406 encode_readlink(xdr, args, req, &hdr); 2407 2408 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages, 2409 args->pgbase, args->pglen); 2410 encode_nops(&hdr); 2411 } 2412 2413 /* 2414 * Encode a READDIR request 2415 */ 2416 static void nfs4_xdr_enc_readdir(struct rpc_rqst *req, struct xdr_stream *xdr, 2417 const struct nfs4_readdir_arg *args) 2418 { 2419 struct compound_hdr hdr = { 2420 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2421 }; 2422 2423 encode_compound_hdr(xdr, req, &hdr); 2424 encode_sequence(xdr, &args->seq_args, &hdr); 2425 encode_putfh(xdr, args->fh, &hdr); 2426 encode_readdir(xdr, args, req, &hdr); 2427 2428 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages, 2429 args->pgbase, args->count); 2430 dprintk("%s: inlined page args = (%u, %p, %u, %u)\n", 2431 __func__, hdr.replen << 2, args->pages, 2432 args->pgbase, args->count); 2433 encode_nops(&hdr); 2434 } 2435 2436 /* 2437 * Encode a READ request 2438 */ 2439 static void nfs4_xdr_enc_read(struct rpc_rqst *req, struct xdr_stream *xdr, 2440 struct nfs_readargs *args) 2441 { 2442 struct compound_hdr hdr = { 2443 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2444 }; 2445 2446 encode_compound_hdr(xdr, req, &hdr); 2447 encode_sequence(xdr, &args->seq_args, &hdr); 2448 encode_putfh(xdr, args->fh, &hdr); 2449 encode_read(xdr, args, &hdr); 2450 2451 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, 2452 args->pages, args->pgbase, args->count); 2453 req->rq_rcv_buf.flags |= XDRBUF_READ; 2454 encode_nops(&hdr); 2455 } 2456 2457 /* 2458 * Encode an SETATTR request 2459 */ 2460 static void nfs4_xdr_enc_setattr(struct rpc_rqst *req, struct xdr_stream *xdr, 2461 struct nfs_setattrargs *args) 2462 { 2463 struct compound_hdr hdr = { 2464 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2465 }; 2466 2467 encode_compound_hdr(xdr, req, &hdr); 2468 encode_sequence(xdr, &args->seq_args, &hdr); 2469 encode_putfh(xdr, args->fh, &hdr); 2470 encode_setattr(xdr, args, args->server, &hdr); 2471 encode_getfattr(xdr, args->bitmask, &hdr); 2472 encode_nops(&hdr); 2473 } 2474 2475 /* 2476 * Encode a GETACL request 2477 */ 2478 static void nfs4_xdr_enc_getacl(struct rpc_rqst *req, struct xdr_stream *xdr, 2479 struct nfs_getaclargs *args) 2480 { 2481 struct compound_hdr hdr = { 2482 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2483 }; 2484 uint32_t replen; 2485 2486 encode_compound_hdr(xdr, req, &hdr); 2487 encode_sequence(xdr, &args->seq_args, &hdr); 2488 encode_putfh(xdr, args->fh, &hdr); 2489 replen = hdr.replen + op_decode_hdr_maxsz + 1; 2490 encode_getattr_two(xdr, FATTR4_WORD0_ACL, 0, &hdr); 2491 2492 xdr_inline_pages(&req->rq_rcv_buf, replen << 2, 2493 args->acl_pages, args->acl_pgbase, args->acl_len); 2494 2495 encode_nops(&hdr); 2496 } 2497 2498 /* 2499 * Encode a WRITE request 2500 */ 2501 static void nfs4_xdr_enc_write(struct rpc_rqst *req, struct xdr_stream *xdr, 2502 struct nfs_writeargs *args) 2503 { 2504 struct compound_hdr hdr = { 2505 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2506 }; 2507 2508 encode_compound_hdr(xdr, req, &hdr); 2509 encode_sequence(xdr, &args->seq_args, &hdr); 2510 encode_putfh(xdr, args->fh, &hdr); 2511 encode_write(xdr, args, &hdr); 2512 req->rq_snd_buf.flags |= XDRBUF_WRITE; 2513 if (args->bitmask) 2514 encode_getfattr(xdr, args->bitmask, &hdr); 2515 encode_nops(&hdr); 2516 } 2517 2518 /* 2519 * a COMMIT request 2520 */ 2521 static void nfs4_xdr_enc_commit(struct rpc_rqst *req, struct xdr_stream *xdr, 2522 struct nfs_commitargs *args) 2523 { 2524 struct compound_hdr hdr = { 2525 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2526 }; 2527 2528 encode_compound_hdr(xdr, req, &hdr); 2529 encode_sequence(xdr, &args->seq_args, &hdr); 2530 encode_putfh(xdr, args->fh, &hdr); 2531 encode_commit(xdr, args, &hdr); 2532 encode_nops(&hdr); 2533 } 2534 2535 /* 2536 * FSINFO request 2537 */ 2538 static void nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr, 2539 struct nfs4_fsinfo_arg *args) 2540 { 2541 struct compound_hdr hdr = { 2542 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2543 }; 2544 2545 encode_compound_hdr(xdr, req, &hdr); 2546 encode_sequence(xdr, &args->seq_args, &hdr); 2547 encode_putfh(xdr, args->fh, &hdr); 2548 encode_fsinfo(xdr, args->bitmask, &hdr); 2549 encode_nops(&hdr); 2550 } 2551 2552 /* 2553 * a PATHCONF request 2554 */ 2555 static void nfs4_xdr_enc_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr, 2556 const struct nfs4_pathconf_arg *args) 2557 { 2558 struct compound_hdr hdr = { 2559 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2560 }; 2561 2562 encode_compound_hdr(xdr, req, &hdr); 2563 encode_sequence(xdr, &args->seq_args, &hdr); 2564 encode_putfh(xdr, args->fh, &hdr); 2565 encode_getattr_one(xdr, args->bitmask[0] & nfs4_pathconf_bitmap[0], 2566 &hdr); 2567 encode_nops(&hdr); 2568 } 2569 2570 /* 2571 * a STATFS request 2572 */ 2573 static void nfs4_xdr_enc_statfs(struct rpc_rqst *req, struct xdr_stream *xdr, 2574 const struct nfs4_statfs_arg *args) 2575 { 2576 struct compound_hdr hdr = { 2577 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2578 }; 2579 2580 encode_compound_hdr(xdr, req, &hdr); 2581 encode_sequence(xdr, &args->seq_args, &hdr); 2582 encode_putfh(xdr, args->fh, &hdr); 2583 encode_getattr_two(xdr, args->bitmask[0] & nfs4_statfs_bitmap[0], 2584 args->bitmask[1] & nfs4_statfs_bitmap[1], &hdr); 2585 encode_nops(&hdr); 2586 } 2587 2588 /* 2589 * GETATTR_BITMAP request 2590 */ 2591 static void nfs4_xdr_enc_server_caps(struct rpc_rqst *req, 2592 struct xdr_stream *xdr, 2593 struct nfs4_server_caps_arg *args) 2594 { 2595 struct compound_hdr hdr = { 2596 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2597 }; 2598 2599 encode_compound_hdr(xdr, req, &hdr); 2600 encode_sequence(xdr, &args->seq_args, &hdr); 2601 encode_putfh(xdr, args->fhandle, &hdr); 2602 encode_getattr_one(xdr, FATTR4_WORD0_SUPPORTED_ATTRS| 2603 FATTR4_WORD0_FH_EXPIRE_TYPE| 2604 FATTR4_WORD0_LINK_SUPPORT| 2605 FATTR4_WORD0_SYMLINK_SUPPORT| 2606 FATTR4_WORD0_ACLSUPPORT, &hdr); 2607 encode_nops(&hdr); 2608 } 2609 2610 /* 2611 * a RENEW request 2612 */ 2613 static void nfs4_xdr_enc_renew(struct rpc_rqst *req, struct xdr_stream *xdr, 2614 struct nfs_client *clp) 2615 { 2616 struct compound_hdr hdr = { 2617 .nops = 0, 2618 }; 2619 2620 encode_compound_hdr(xdr, req, &hdr); 2621 encode_renew(xdr, clp->cl_clientid, &hdr); 2622 encode_nops(&hdr); 2623 } 2624 2625 /* 2626 * a SETCLIENTID request 2627 */ 2628 static void nfs4_xdr_enc_setclientid(struct rpc_rqst *req, 2629 struct xdr_stream *xdr, 2630 struct nfs4_setclientid *sc) 2631 { 2632 struct compound_hdr hdr = { 2633 .nops = 0, 2634 }; 2635 2636 encode_compound_hdr(xdr, req, &hdr); 2637 encode_setclientid(xdr, sc, &hdr); 2638 encode_nops(&hdr); 2639 } 2640 2641 /* 2642 * a SETCLIENTID_CONFIRM request 2643 */ 2644 static void nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req, 2645 struct xdr_stream *xdr, 2646 struct nfs4_setclientid_res *arg) 2647 { 2648 struct compound_hdr hdr = { 2649 .nops = 0, 2650 }; 2651 2652 encode_compound_hdr(xdr, req, &hdr); 2653 encode_setclientid_confirm(xdr, arg, &hdr); 2654 encode_nops(&hdr); 2655 } 2656 2657 /* 2658 * DELEGRETURN request 2659 */ 2660 static void nfs4_xdr_enc_delegreturn(struct rpc_rqst *req, 2661 struct xdr_stream *xdr, 2662 const struct nfs4_delegreturnargs *args) 2663 { 2664 struct compound_hdr hdr = { 2665 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2666 }; 2667 2668 encode_compound_hdr(xdr, req, &hdr); 2669 encode_sequence(xdr, &args->seq_args, &hdr); 2670 encode_putfh(xdr, args->fhandle, &hdr); 2671 encode_getfattr(xdr, args->bitmask, &hdr); 2672 encode_delegreturn(xdr, args->stateid, &hdr); 2673 encode_nops(&hdr); 2674 } 2675 2676 /* 2677 * Encode FS_LOCATIONS request 2678 */ 2679 static void nfs4_xdr_enc_fs_locations(struct rpc_rqst *req, 2680 struct xdr_stream *xdr, 2681 struct nfs4_fs_locations_arg *args) 2682 { 2683 struct compound_hdr hdr = { 2684 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2685 }; 2686 uint32_t replen; 2687 2688 encode_compound_hdr(xdr, req, &hdr); 2689 encode_sequence(xdr, &args->seq_args, &hdr); 2690 encode_putfh(xdr, args->dir_fh, &hdr); 2691 encode_lookup(xdr, args->name, &hdr); 2692 replen = hdr.replen; /* get the attribute into args->page */ 2693 encode_fs_locations(xdr, args->bitmask, &hdr); 2694 2695 xdr_inline_pages(&req->rq_rcv_buf, replen << 2, &args->page, 2696 0, PAGE_SIZE); 2697 encode_nops(&hdr); 2698 } 2699 2700 /* 2701 * Encode SECINFO request 2702 */ 2703 static void nfs4_xdr_enc_secinfo(struct rpc_rqst *req, 2704 struct xdr_stream *xdr, 2705 struct nfs4_secinfo_arg *args) 2706 { 2707 struct compound_hdr hdr = { 2708 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2709 }; 2710 2711 encode_compound_hdr(xdr, req, &hdr); 2712 encode_sequence(xdr, &args->seq_args, &hdr); 2713 encode_putfh(xdr, args->dir_fh, &hdr); 2714 encode_secinfo(xdr, args->name, &hdr); 2715 encode_nops(&hdr); 2716 } 2717 2718 #if defined(CONFIG_NFS_V4_1) 2719 /* 2720 * BIND_CONN_TO_SESSION request 2721 */ 2722 static void nfs4_xdr_enc_bind_conn_to_session(struct rpc_rqst *req, 2723 struct xdr_stream *xdr, 2724 struct nfs_client *clp) 2725 { 2726 struct compound_hdr hdr = { 2727 .minorversion = clp->cl_mvops->minor_version, 2728 }; 2729 2730 encode_compound_hdr(xdr, req, &hdr); 2731 encode_bind_conn_to_session(xdr, clp->cl_session, &hdr); 2732 encode_nops(&hdr); 2733 } 2734 2735 /* 2736 * EXCHANGE_ID request 2737 */ 2738 static void nfs4_xdr_enc_exchange_id(struct rpc_rqst *req, 2739 struct xdr_stream *xdr, 2740 struct nfs41_exchange_id_args *args) 2741 { 2742 struct compound_hdr hdr = { 2743 .minorversion = args->client->cl_mvops->minor_version, 2744 }; 2745 2746 encode_compound_hdr(xdr, req, &hdr); 2747 encode_exchange_id(xdr, args, &hdr); 2748 encode_nops(&hdr); 2749 } 2750 2751 /* 2752 * a CREATE_SESSION request 2753 */ 2754 static void nfs4_xdr_enc_create_session(struct rpc_rqst *req, 2755 struct xdr_stream *xdr, 2756 struct nfs41_create_session_args *args) 2757 { 2758 struct compound_hdr hdr = { 2759 .minorversion = args->client->cl_mvops->minor_version, 2760 }; 2761 2762 encode_compound_hdr(xdr, req, &hdr); 2763 encode_create_session(xdr, args, &hdr); 2764 encode_nops(&hdr); 2765 } 2766 2767 /* 2768 * a DESTROY_SESSION request 2769 */ 2770 static void nfs4_xdr_enc_destroy_session(struct rpc_rqst *req, 2771 struct xdr_stream *xdr, 2772 struct nfs4_session *session) 2773 { 2774 struct compound_hdr hdr = { 2775 .minorversion = session->clp->cl_mvops->minor_version, 2776 }; 2777 2778 encode_compound_hdr(xdr, req, &hdr); 2779 encode_destroy_session(xdr, session, &hdr); 2780 encode_nops(&hdr); 2781 } 2782 2783 /* 2784 * a DESTROY_CLIENTID request 2785 */ 2786 static void nfs4_xdr_enc_destroy_clientid(struct rpc_rqst *req, 2787 struct xdr_stream *xdr, 2788 struct nfs_client *clp) 2789 { 2790 struct compound_hdr hdr = { 2791 .minorversion = clp->cl_mvops->minor_version, 2792 }; 2793 2794 encode_compound_hdr(xdr, req, &hdr); 2795 encode_destroy_clientid(xdr, clp->cl_clientid, &hdr); 2796 encode_nops(&hdr); 2797 } 2798 2799 /* 2800 * a SEQUENCE request 2801 */ 2802 static void nfs4_xdr_enc_sequence(struct rpc_rqst *req, struct xdr_stream *xdr, 2803 struct nfs4_sequence_args *args) 2804 { 2805 struct compound_hdr hdr = { 2806 .minorversion = nfs4_xdr_minorversion(args), 2807 }; 2808 2809 encode_compound_hdr(xdr, req, &hdr); 2810 encode_sequence(xdr, args, &hdr); 2811 encode_nops(&hdr); 2812 } 2813 2814 /* 2815 * a GET_LEASE_TIME request 2816 */ 2817 static void nfs4_xdr_enc_get_lease_time(struct rpc_rqst *req, 2818 struct xdr_stream *xdr, 2819 struct nfs4_get_lease_time_args *args) 2820 { 2821 struct compound_hdr hdr = { 2822 .minorversion = nfs4_xdr_minorversion(&args->la_seq_args), 2823 }; 2824 const u32 lease_bitmap[3] = { FATTR4_WORD0_LEASE_TIME }; 2825 2826 encode_compound_hdr(xdr, req, &hdr); 2827 encode_sequence(xdr, &args->la_seq_args, &hdr); 2828 encode_putrootfh(xdr, &hdr); 2829 encode_fsinfo(xdr, lease_bitmap, &hdr); 2830 encode_nops(&hdr); 2831 } 2832 2833 /* 2834 * a RECLAIM_COMPLETE request 2835 */ 2836 static void nfs4_xdr_enc_reclaim_complete(struct rpc_rqst *req, 2837 struct xdr_stream *xdr, 2838 struct nfs41_reclaim_complete_args *args) 2839 { 2840 struct compound_hdr hdr = { 2841 .minorversion = nfs4_xdr_minorversion(&args->seq_args) 2842 }; 2843 2844 encode_compound_hdr(xdr, req, &hdr); 2845 encode_sequence(xdr, &args->seq_args, &hdr); 2846 encode_reclaim_complete(xdr, args, &hdr); 2847 encode_nops(&hdr); 2848 } 2849 2850 /* 2851 * Encode GETDEVICELIST request 2852 */ 2853 static void nfs4_xdr_enc_getdevicelist(struct rpc_rqst *req, 2854 struct xdr_stream *xdr, 2855 struct nfs4_getdevicelist_args *args) 2856 { 2857 struct compound_hdr hdr = { 2858 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2859 }; 2860 2861 encode_compound_hdr(xdr, req, &hdr); 2862 encode_sequence(xdr, &args->seq_args, &hdr); 2863 encode_putfh(xdr, args->fh, &hdr); 2864 encode_getdevicelist(xdr, args, &hdr); 2865 encode_nops(&hdr); 2866 } 2867 2868 /* 2869 * Encode GETDEVICEINFO request 2870 */ 2871 static void nfs4_xdr_enc_getdeviceinfo(struct rpc_rqst *req, 2872 struct xdr_stream *xdr, 2873 struct nfs4_getdeviceinfo_args *args) 2874 { 2875 struct compound_hdr hdr = { 2876 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2877 }; 2878 2879 encode_compound_hdr(xdr, req, &hdr); 2880 encode_sequence(xdr, &args->seq_args, &hdr); 2881 encode_getdeviceinfo(xdr, args, &hdr); 2882 2883 /* set up reply kvec. Subtract notification bitmap max size (2) 2884 * so that notification bitmap is put in xdr_buf tail */ 2885 xdr_inline_pages(&req->rq_rcv_buf, (hdr.replen - 2) << 2, 2886 args->pdev->pages, args->pdev->pgbase, 2887 args->pdev->pglen); 2888 2889 encode_nops(&hdr); 2890 } 2891 2892 /* 2893 * Encode LAYOUTGET request 2894 */ 2895 static void nfs4_xdr_enc_layoutget(struct rpc_rqst *req, 2896 struct xdr_stream *xdr, 2897 struct nfs4_layoutget_args *args) 2898 { 2899 struct compound_hdr hdr = { 2900 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2901 }; 2902 2903 encode_compound_hdr(xdr, req, &hdr); 2904 encode_sequence(xdr, &args->seq_args, &hdr); 2905 encode_putfh(xdr, NFS_FH(args->inode), &hdr); 2906 encode_layoutget(xdr, args, &hdr); 2907 2908 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, 2909 args->layout.pages, 0, args->layout.pglen); 2910 2911 encode_nops(&hdr); 2912 } 2913 2914 /* 2915 * Encode LAYOUTCOMMIT request 2916 */ 2917 static void nfs4_xdr_enc_layoutcommit(struct rpc_rqst *req, 2918 struct xdr_stream *xdr, 2919 struct nfs4_layoutcommit_args *args) 2920 { 2921 struct nfs4_layoutcommit_data *data = 2922 container_of(args, struct nfs4_layoutcommit_data, args); 2923 struct compound_hdr hdr = { 2924 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2925 }; 2926 2927 encode_compound_hdr(xdr, req, &hdr); 2928 encode_sequence(xdr, &args->seq_args, &hdr); 2929 encode_putfh(xdr, NFS_FH(args->inode), &hdr); 2930 encode_layoutcommit(xdr, data->args.inode, args, &hdr); 2931 encode_getfattr(xdr, args->bitmask, &hdr); 2932 encode_nops(&hdr); 2933 } 2934 2935 /* 2936 * Encode LAYOUTRETURN request 2937 */ 2938 static void nfs4_xdr_enc_layoutreturn(struct rpc_rqst *req, 2939 struct xdr_stream *xdr, 2940 struct nfs4_layoutreturn_args *args) 2941 { 2942 struct compound_hdr hdr = { 2943 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2944 }; 2945 2946 encode_compound_hdr(xdr, req, &hdr); 2947 encode_sequence(xdr, &args->seq_args, &hdr); 2948 encode_putfh(xdr, NFS_FH(args->inode), &hdr); 2949 encode_layoutreturn(xdr, args, &hdr); 2950 encode_nops(&hdr); 2951 } 2952 2953 /* 2954 * Encode SECINFO_NO_NAME request 2955 */ 2956 static int nfs4_xdr_enc_secinfo_no_name(struct rpc_rqst *req, 2957 struct xdr_stream *xdr, 2958 struct nfs41_secinfo_no_name_args *args) 2959 { 2960 struct compound_hdr hdr = { 2961 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2962 }; 2963 2964 encode_compound_hdr(xdr, req, &hdr); 2965 encode_sequence(xdr, &args->seq_args, &hdr); 2966 encode_putrootfh(xdr, &hdr); 2967 encode_secinfo_no_name(xdr, args, &hdr); 2968 encode_nops(&hdr); 2969 return 0; 2970 } 2971 2972 /* 2973 * Encode TEST_STATEID request 2974 */ 2975 static void nfs4_xdr_enc_test_stateid(struct rpc_rqst *req, 2976 struct xdr_stream *xdr, 2977 struct nfs41_test_stateid_args *args) 2978 { 2979 struct compound_hdr hdr = { 2980 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2981 }; 2982 2983 encode_compound_hdr(xdr, req, &hdr); 2984 encode_sequence(xdr, &args->seq_args, &hdr); 2985 encode_test_stateid(xdr, args, &hdr); 2986 encode_nops(&hdr); 2987 } 2988 2989 /* 2990 * Encode FREE_STATEID request 2991 */ 2992 static void nfs4_xdr_enc_free_stateid(struct rpc_rqst *req, 2993 struct xdr_stream *xdr, 2994 struct nfs41_free_stateid_args *args) 2995 { 2996 struct compound_hdr hdr = { 2997 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2998 }; 2999 3000 encode_compound_hdr(xdr, req, &hdr); 3001 encode_sequence(xdr, &args->seq_args, &hdr); 3002 encode_free_stateid(xdr, args, &hdr); 3003 encode_nops(&hdr); 3004 } 3005 #endif /* CONFIG_NFS_V4_1 */ 3006 3007 static void print_overflow_msg(const char *func, const struct xdr_stream *xdr) 3008 { 3009 dprintk("nfs: %s: prematurely hit end of receive buffer. " 3010 "Remaining buffer length is %tu words.\n", 3011 func, xdr->end - xdr->p); 3012 } 3013 3014 static int decode_opaque_inline(struct xdr_stream *xdr, unsigned int *len, char **string) 3015 { 3016 __be32 *p; 3017 3018 p = xdr_inline_decode(xdr, 4); 3019 if (unlikely(!p)) 3020 goto out_overflow; 3021 *len = be32_to_cpup(p); 3022 p = xdr_inline_decode(xdr, *len); 3023 if (unlikely(!p)) 3024 goto out_overflow; 3025 *string = (char *)p; 3026 return 0; 3027 out_overflow: 3028 print_overflow_msg(__func__, xdr); 3029 return -EIO; 3030 } 3031 3032 static int decode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr) 3033 { 3034 __be32 *p; 3035 3036 p = xdr_inline_decode(xdr, 8); 3037 if (unlikely(!p)) 3038 goto out_overflow; 3039 hdr->status = be32_to_cpup(p++); 3040 hdr->taglen = be32_to_cpup(p); 3041 3042 p = xdr_inline_decode(xdr, hdr->taglen + 4); 3043 if (unlikely(!p)) 3044 goto out_overflow; 3045 hdr->tag = (char *)p; 3046 p += XDR_QUADLEN(hdr->taglen); 3047 hdr->nops = be32_to_cpup(p); 3048 if (unlikely(hdr->nops < 1)) 3049 return nfs4_stat_to_errno(hdr->status); 3050 return 0; 3051 out_overflow: 3052 print_overflow_msg(__func__, xdr); 3053 return -EIO; 3054 } 3055 3056 static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected) 3057 { 3058 __be32 *p; 3059 uint32_t opnum; 3060 int32_t nfserr; 3061 3062 p = xdr_inline_decode(xdr, 8); 3063 if (unlikely(!p)) 3064 goto out_overflow; 3065 opnum = be32_to_cpup(p++); 3066 if (opnum != expected) { 3067 dprintk("nfs: Server returned operation" 3068 " %d but we issued a request for %d\n", 3069 opnum, expected); 3070 return -EIO; 3071 } 3072 nfserr = be32_to_cpup(p); 3073 if (nfserr != NFS_OK) 3074 return nfs4_stat_to_errno(nfserr); 3075 return 0; 3076 out_overflow: 3077 print_overflow_msg(__func__, xdr); 3078 return -EIO; 3079 } 3080 3081 /* Dummy routine */ 3082 static int decode_ace(struct xdr_stream *xdr, void *ace, struct nfs_client *clp) 3083 { 3084 __be32 *p; 3085 unsigned int strlen; 3086 char *str; 3087 3088 p = xdr_inline_decode(xdr, 12); 3089 if (likely(p)) 3090 return decode_opaque_inline(xdr, &strlen, &str); 3091 print_overflow_msg(__func__, xdr); 3092 return -EIO; 3093 } 3094 3095 static int decode_attr_bitmap(struct xdr_stream *xdr, uint32_t *bitmap) 3096 { 3097 uint32_t bmlen; 3098 __be32 *p; 3099 3100 p = xdr_inline_decode(xdr, 4); 3101 if (unlikely(!p)) 3102 goto out_overflow; 3103 bmlen = be32_to_cpup(p); 3104 3105 bitmap[0] = bitmap[1] = bitmap[2] = 0; 3106 p = xdr_inline_decode(xdr, (bmlen << 2)); 3107 if (unlikely(!p)) 3108 goto out_overflow; 3109 if (bmlen > 0) { 3110 bitmap[0] = be32_to_cpup(p++); 3111 if (bmlen > 1) { 3112 bitmap[1] = be32_to_cpup(p++); 3113 if (bmlen > 2) 3114 bitmap[2] = be32_to_cpup(p); 3115 } 3116 } 3117 return 0; 3118 out_overflow: 3119 print_overflow_msg(__func__, xdr); 3120 return -EIO; 3121 } 3122 3123 static int decode_attr_length(struct xdr_stream *xdr, uint32_t *attrlen, unsigned int *savep) 3124 { 3125 __be32 *p; 3126 3127 p = xdr_inline_decode(xdr, 4); 3128 if (unlikely(!p)) 3129 goto out_overflow; 3130 *attrlen = be32_to_cpup(p); 3131 *savep = xdr_stream_pos(xdr); 3132 return 0; 3133 out_overflow: 3134 print_overflow_msg(__func__, xdr); 3135 return -EIO; 3136 } 3137 3138 static int decode_attr_supported(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *bitmask) 3139 { 3140 if (likely(bitmap[0] & FATTR4_WORD0_SUPPORTED_ATTRS)) { 3141 int ret; 3142 ret = decode_attr_bitmap(xdr, bitmask); 3143 if (unlikely(ret < 0)) 3144 return ret; 3145 bitmap[0] &= ~FATTR4_WORD0_SUPPORTED_ATTRS; 3146 } else 3147 bitmask[0] = bitmask[1] = bitmask[2] = 0; 3148 dprintk("%s: bitmask=%08x:%08x:%08x\n", __func__, 3149 bitmask[0], bitmask[1], bitmask[2]); 3150 return 0; 3151 } 3152 3153 static int decode_attr_type(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *type) 3154 { 3155 __be32 *p; 3156 int ret = 0; 3157 3158 *type = 0; 3159 if (unlikely(bitmap[0] & (FATTR4_WORD0_TYPE - 1U))) 3160 return -EIO; 3161 if (likely(bitmap[0] & FATTR4_WORD0_TYPE)) { 3162 p = xdr_inline_decode(xdr, 4); 3163 if (unlikely(!p)) 3164 goto out_overflow; 3165 *type = be32_to_cpup(p); 3166 if (*type < NF4REG || *type > NF4NAMEDATTR) { 3167 dprintk("%s: bad type %d\n", __func__, *type); 3168 return -EIO; 3169 } 3170 bitmap[0] &= ~FATTR4_WORD0_TYPE; 3171 ret = NFS_ATTR_FATTR_TYPE; 3172 } 3173 dprintk("%s: type=0%o\n", __func__, nfs_type2fmt[*type]); 3174 return ret; 3175 out_overflow: 3176 print_overflow_msg(__func__, xdr); 3177 return -EIO; 3178 } 3179 3180 static int decode_attr_fh_expire_type(struct xdr_stream *xdr, 3181 uint32_t *bitmap, uint32_t *type) 3182 { 3183 __be32 *p; 3184 3185 *type = 0; 3186 if (unlikely(bitmap[0] & (FATTR4_WORD0_FH_EXPIRE_TYPE - 1U))) 3187 return -EIO; 3188 if (likely(bitmap[0] & FATTR4_WORD0_FH_EXPIRE_TYPE)) { 3189 p = xdr_inline_decode(xdr, 4); 3190 if (unlikely(!p)) 3191 goto out_overflow; 3192 *type = be32_to_cpup(p); 3193 bitmap[0] &= ~FATTR4_WORD0_FH_EXPIRE_TYPE; 3194 } 3195 dprintk("%s: expire type=0x%x\n", __func__, *type); 3196 return 0; 3197 out_overflow: 3198 print_overflow_msg(__func__, xdr); 3199 return -EIO; 3200 } 3201 3202 static int decode_attr_change(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *change) 3203 { 3204 __be32 *p; 3205 int ret = 0; 3206 3207 *change = 0; 3208 if (unlikely(bitmap[0] & (FATTR4_WORD0_CHANGE - 1U))) 3209 return -EIO; 3210 if (likely(bitmap[0] & FATTR4_WORD0_CHANGE)) { 3211 p = xdr_inline_decode(xdr, 8); 3212 if (unlikely(!p)) 3213 goto out_overflow; 3214 xdr_decode_hyper(p, change); 3215 bitmap[0] &= ~FATTR4_WORD0_CHANGE; 3216 ret = NFS_ATTR_FATTR_CHANGE; 3217 } 3218 dprintk("%s: change attribute=%Lu\n", __func__, 3219 (unsigned long long)*change); 3220 return ret; 3221 out_overflow: 3222 print_overflow_msg(__func__, xdr); 3223 return -EIO; 3224 } 3225 3226 static int decode_attr_size(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *size) 3227 { 3228 __be32 *p; 3229 int ret = 0; 3230 3231 *size = 0; 3232 if (unlikely(bitmap[0] & (FATTR4_WORD0_SIZE - 1U))) 3233 return -EIO; 3234 if (likely(bitmap[0] & FATTR4_WORD0_SIZE)) { 3235 p = xdr_inline_decode(xdr, 8); 3236 if (unlikely(!p)) 3237 goto out_overflow; 3238 xdr_decode_hyper(p, size); 3239 bitmap[0] &= ~FATTR4_WORD0_SIZE; 3240 ret = NFS_ATTR_FATTR_SIZE; 3241 } 3242 dprintk("%s: file size=%Lu\n", __func__, (unsigned long long)*size); 3243 return ret; 3244 out_overflow: 3245 print_overflow_msg(__func__, xdr); 3246 return -EIO; 3247 } 3248 3249 static int decode_attr_link_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) 3250 { 3251 __be32 *p; 3252 3253 *res = 0; 3254 if (unlikely(bitmap[0] & (FATTR4_WORD0_LINK_SUPPORT - 1U))) 3255 return -EIO; 3256 if (likely(bitmap[0] & FATTR4_WORD0_LINK_SUPPORT)) { 3257 p = xdr_inline_decode(xdr, 4); 3258 if (unlikely(!p)) 3259 goto out_overflow; 3260 *res = be32_to_cpup(p); 3261 bitmap[0] &= ~FATTR4_WORD0_LINK_SUPPORT; 3262 } 3263 dprintk("%s: link support=%s\n", __func__, *res == 0 ? "false" : "true"); 3264 return 0; 3265 out_overflow: 3266 print_overflow_msg(__func__, xdr); 3267 return -EIO; 3268 } 3269 3270 static int decode_attr_symlink_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) 3271 { 3272 __be32 *p; 3273 3274 *res = 0; 3275 if (unlikely(bitmap[0] & (FATTR4_WORD0_SYMLINK_SUPPORT - 1U))) 3276 return -EIO; 3277 if (likely(bitmap[0] & FATTR4_WORD0_SYMLINK_SUPPORT)) { 3278 p = xdr_inline_decode(xdr, 4); 3279 if (unlikely(!p)) 3280 goto out_overflow; 3281 *res = be32_to_cpup(p); 3282 bitmap[0] &= ~FATTR4_WORD0_SYMLINK_SUPPORT; 3283 } 3284 dprintk("%s: symlink support=%s\n", __func__, *res == 0 ? "false" : "true"); 3285 return 0; 3286 out_overflow: 3287 print_overflow_msg(__func__, xdr); 3288 return -EIO; 3289 } 3290 3291 static int decode_attr_fsid(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fsid *fsid) 3292 { 3293 __be32 *p; 3294 int ret = 0; 3295 3296 fsid->major = 0; 3297 fsid->minor = 0; 3298 if (unlikely(bitmap[0] & (FATTR4_WORD0_FSID - 1U))) 3299 return -EIO; 3300 if (likely(bitmap[0] & FATTR4_WORD0_FSID)) { 3301 p = xdr_inline_decode(xdr, 16); 3302 if (unlikely(!p)) 3303 goto out_overflow; 3304 p = xdr_decode_hyper(p, &fsid->major); 3305 xdr_decode_hyper(p, &fsid->minor); 3306 bitmap[0] &= ~FATTR4_WORD0_FSID; 3307 ret = NFS_ATTR_FATTR_FSID; 3308 } 3309 dprintk("%s: fsid=(0x%Lx/0x%Lx)\n", __func__, 3310 (unsigned long long)fsid->major, 3311 (unsigned long long)fsid->minor); 3312 return ret; 3313 out_overflow: 3314 print_overflow_msg(__func__, xdr); 3315 return -EIO; 3316 } 3317 3318 static int decode_attr_lease_time(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) 3319 { 3320 __be32 *p; 3321 3322 *res = 60; 3323 if (unlikely(bitmap[0] & (FATTR4_WORD0_LEASE_TIME - 1U))) 3324 return -EIO; 3325 if (likely(bitmap[0] & FATTR4_WORD0_LEASE_TIME)) { 3326 p = xdr_inline_decode(xdr, 4); 3327 if (unlikely(!p)) 3328 goto out_overflow; 3329 *res = be32_to_cpup(p); 3330 bitmap[0] &= ~FATTR4_WORD0_LEASE_TIME; 3331 } 3332 dprintk("%s: file size=%u\n", __func__, (unsigned int)*res); 3333 return 0; 3334 out_overflow: 3335 print_overflow_msg(__func__, xdr); 3336 return -EIO; 3337 } 3338 3339 static int decode_attr_error(struct xdr_stream *xdr, uint32_t *bitmap, int32_t *res) 3340 { 3341 __be32 *p; 3342 3343 if (unlikely(bitmap[0] & (FATTR4_WORD0_RDATTR_ERROR - 1U))) 3344 return -EIO; 3345 if (likely(bitmap[0] & FATTR4_WORD0_RDATTR_ERROR)) { 3346 p = xdr_inline_decode(xdr, 4); 3347 if (unlikely(!p)) 3348 goto out_overflow; 3349 bitmap[0] &= ~FATTR4_WORD0_RDATTR_ERROR; 3350 *res = -be32_to_cpup(p); 3351 } 3352 return 0; 3353 out_overflow: 3354 print_overflow_msg(__func__, xdr); 3355 return -EIO; 3356 } 3357 3358 static int decode_attr_filehandle(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fh *fh) 3359 { 3360 __be32 *p; 3361 int len; 3362 3363 if (fh != NULL) 3364 memset(fh, 0, sizeof(*fh)); 3365 3366 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEHANDLE - 1U))) 3367 return -EIO; 3368 if (likely(bitmap[0] & FATTR4_WORD0_FILEHANDLE)) { 3369 p = xdr_inline_decode(xdr, 4); 3370 if (unlikely(!p)) 3371 goto out_overflow; 3372 len = be32_to_cpup(p); 3373 if (len > NFS4_FHSIZE) 3374 return -EIO; 3375 p = xdr_inline_decode(xdr, len); 3376 if (unlikely(!p)) 3377 goto out_overflow; 3378 if (fh != NULL) { 3379 memcpy(fh->data, p, len); 3380 fh->size = len; 3381 } 3382 bitmap[0] &= ~FATTR4_WORD0_FILEHANDLE; 3383 } 3384 return 0; 3385 out_overflow: 3386 print_overflow_msg(__func__, xdr); 3387 return -EIO; 3388 } 3389 3390 static int decode_attr_aclsupport(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) 3391 { 3392 __be32 *p; 3393 3394 *res = ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL; 3395 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACLSUPPORT - 1U))) 3396 return -EIO; 3397 if (likely(bitmap[0] & FATTR4_WORD0_ACLSUPPORT)) { 3398 p = xdr_inline_decode(xdr, 4); 3399 if (unlikely(!p)) 3400 goto out_overflow; 3401 *res = be32_to_cpup(p); 3402 bitmap[0] &= ~FATTR4_WORD0_ACLSUPPORT; 3403 } 3404 dprintk("%s: ACLs supported=%u\n", __func__, (unsigned int)*res); 3405 return 0; 3406 out_overflow: 3407 print_overflow_msg(__func__, xdr); 3408 return -EIO; 3409 } 3410 3411 static int decode_attr_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid) 3412 { 3413 __be32 *p; 3414 int ret = 0; 3415 3416 *fileid = 0; 3417 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEID - 1U))) 3418 return -EIO; 3419 if (likely(bitmap[0] & FATTR4_WORD0_FILEID)) { 3420 p = xdr_inline_decode(xdr, 8); 3421 if (unlikely(!p)) 3422 goto out_overflow; 3423 xdr_decode_hyper(p, fileid); 3424 bitmap[0] &= ~FATTR4_WORD0_FILEID; 3425 ret = NFS_ATTR_FATTR_FILEID; 3426 } 3427 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid); 3428 return ret; 3429 out_overflow: 3430 print_overflow_msg(__func__, xdr); 3431 return -EIO; 3432 } 3433 3434 static int decode_attr_mounted_on_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid) 3435 { 3436 __be32 *p; 3437 int ret = 0; 3438 3439 *fileid = 0; 3440 if (unlikely(bitmap[1] & (FATTR4_WORD1_MOUNTED_ON_FILEID - 1U))) 3441 return -EIO; 3442 if (likely(bitmap[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)) { 3443 p = xdr_inline_decode(xdr, 8); 3444 if (unlikely(!p)) 3445 goto out_overflow; 3446 xdr_decode_hyper(p, fileid); 3447 bitmap[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID; 3448 ret = NFS_ATTR_FATTR_MOUNTED_ON_FILEID; 3449 } 3450 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid); 3451 return ret; 3452 out_overflow: 3453 print_overflow_msg(__func__, xdr); 3454 return -EIO; 3455 } 3456 3457 static int decode_attr_files_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 3458 { 3459 __be32 *p; 3460 int status = 0; 3461 3462 *res = 0; 3463 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_AVAIL - 1U))) 3464 return -EIO; 3465 if (likely(bitmap[0] & FATTR4_WORD0_FILES_AVAIL)) { 3466 p = xdr_inline_decode(xdr, 8); 3467 if (unlikely(!p)) 3468 goto out_overflow; 3469 xdr_decode_hyper(p, res); 3470 bitmap[0] &= ~FATTR4_WORD0_FILES_AVAIL; 3471 } 3472 dprintk("%s: files avail=%Lu\n", __func__, (unsigned long long)*res); 3473 return status; 3474 out_overflow: 3475 print_overflow_msg(__func__, xdr); 3476 return -EIO; 3477 } 3478 3479 static int decode_attr_files_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 3480 { 3481 __be32 *p; 3482 int status = 0; 3483 3484 *res = 0; 3485 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_FREE - 1U))) 3486 return -EIO; 3487 if (likely(bitmap[0] & FATTR4_WORD0_FILES_FREE)) { 3488 p = xdr_inline_decode(xdr, 8); 3489 if (unlikely(!p)) 3490 goto out_overflow; 3491 xdr_decode_hyper(p, res); 3492 bitmap[0] &= ~FATTR4_WORD0_FILES_FREE; 3493 } 3494 dprintk("%s: files free=%Lu\n", __func__, (unsigned long long)*res); 3495 return status; 3496 out_overflow: 3497 print_overflow_msg(__func__, xdr); 3498 return -EIO; 3499 } 3500 3501 static int decode_attr_files_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 3502 { 3503 __be32 *p; 3504 int status = 0; 3505 3506 *res = 0; 3507 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_TOTAL - 1U))) 3508 return -EIO; 3509 if (likely(bitmap[0] & FATTR4_WORD0_FILES_TOTAL)) { 3510 p = xdr_inline_decode(xdr, 8); 3511 if (unlikely(!p)) 3512 goto out_overflow; 3513 xdr_decode_hyper(p, res); 3514 bitmap[0] &= ~FATTR4_WORD0_FILES_TOTAL; 3515 } 3516 dprintk("%s: files total=%Lu\n", __func__, (unsigned long long)*res); 3517 return status; 3518 out_overflow: 3519 print_overflow_msg(__func__, xdr); 3520 return -EIO; 3521 } 3522 3523 static int decode_pathname(struct xdr_stream *xdr, struct nfs4_pathname *path) 3524 { 3525 u32 n; 3526 __be32 *p; 3527 int status = 0; 3528 3529 p = xdr_inline_decode(xdr, 4); 3530 if (unlikely(!p)) 3531 goto out_overflow; 3532 n = be32_to_cpup(p); 3533 if (n == 0) 3534 goto root_path; 3535 dprintk("pathname4: "); 3536 if (n > NFS4_PATHNAME_MAXCOMPONENTS) { 3537 dprintk("cannot parse %d components in path\n", n); 3538 goto out_eio; 3539 } 3540 for (path->ncomponents = 0; path->ncomponents < n; path->ncomponents++) { 3541 struct nfs4_string *component = &path->components[path->ncomponents]; 3542 status = decode_opaque_inline(xdr, &component->len, &component->data); 3543 if (unlikely(status != 0)) 3544 goto out_eio; 3545 ifdebug (XDR) 3546 pr_cont("%s%.*s ", 3547 (path->ncomponents != n ? "/ " : ""), 3548 component->len, component->data); 3549 } 3550 out: 3551 return status; 3552 root_path: 3553 /* a root pathname is sent as a zero component4 */ 3554 path->ncomponents = 1; 3555 path->components[0].len=0; 3556 path->components[0].data=NULL; 3557 dprintk("pathname4: /\n"); 3558 goto out; 3559 out_eio: 3560 dprintk(" status %d", status); 3561 status = -EIO; 3562 goto out; 3563 out_overflow: 3564 print_overflow_msg(__func__, xdr); 3565 return -EIO; 3566 } 3567 3568 static int decode_attr_fs_locations(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_fs_locations *res) 3569 { 3570 int n; 3571 __be32 *p; 3572 int status = -EIO; 3573 3574 if (unlikely(bitmap[0] & (FATTR4_WORD0_FS_LOCATIONS -1U))) 3575 goto out; 3576 status = 0; 3577 if (unlikely(!(bitmap[0] & FATTR4_WORD0_FS_LOCATIONS))) 3578 goto out; 3579 status = -EIO; 3580 /* Ignore borken servers that return unrequested attrs */ 3581 if (unlikely(res == NULL)) 3582 goto out; 3583 dprintk("%s: fsroot:\n", __func__); 3584 status = decode_pathname(xdr, &res->fs_path); 3585 if (unlikely(status != 0)) 3586 goto out; 3587 p = xdr_inline_decode(xdr, 4); 3588 if (unlikely(!p)) 3589 goto out_overflow; 3590 n = be32_to_cpup(p); 3591 if (n <= 0) 3592 goto out_eio; 3593 for (res->nlocations = 0; res->nlocations < n; res->nlocations++) { 3594 u32 m; 3595 struct nfs4_fs_location *loc; 3596 3597 if (res->nlocations == NFS4_FS_LOCATIONS_MAXENTRIES) 3598 break; 3599 loc = &res->locations[res->nlocations]; 3600 p = xdr_inline_decode(xdr, 4); 3601 if (unlikely(!p)) 3602 goto out_overflow; 3603 m = be32_to_cpup(p); 3604 3605 dprintk("%s: servers:\n", __func__); 3606 for (loc->nservers = 0; loc->nservers < m; loc->nservers++) { 3607 struct nfs4_string *server; 3608 3609 if (loc->nservers == NFS4_FS_LOCATION_MAXSERVERS) { 3610 unsigned int i; 3611 dprintk("%s: using first %u of %u servers " 3612 "returned for location %u\n", 3613 __func__, 3614 NFS4_FS_LOCATION_MAXSERVERS, 3615 m, res->nlocations); 3616 for (i = loc->nservers; i < m; i++) { 3617 unsigned int len; 3618 char *data; 3619 status = decode_opaque_inline(xdr, &len, &data); 3620 if (unlikely(status != 0)) 3621 goto out_eio; 3622 } 3623 break; 3624 } 3625 server = &loc->servers[loc->nservers]; 3626 status = decode_opaque_inline(xdr, &server->len, &server->data); 3627 if (unlikely(status != 0)) 3628 goto out_eio; 3629 dprintk("%s ", server->data); 3630 } 3631 status = decode_pathname(xdr, &loc->rootpath); 3632 if (unlikely(status != 0)) 3633 goto out_eio; 3634 } 3635 if (res->nlocations != 0) 3636 status = NFS_ATTR_FATTR_V4_LOCATIONS; 3637 out: 3638 dprintk("%s: fs_locations done, error = %d\n", __func__, status); 3639 return status; 3640 out_overflow: 3641 print_overflow_msg(__func__, xdr); 3642 out_eio: 3643 status = -EIO; 3644 goto out; 3645 } 3646 3647 static int decode_attr_maxfilesize(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 3648 { 3649 __be32 *p; 3650 int status = 0; 3651 3652 *res = 0; 3653 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXFILESIZE - 1U))) 3654 return -EIO; 3655 if (likely(bitmap[0] & FATTR4_WORD0_MAXFILESIZE)) { 3656 p = xdr_inline_decode(xdr, 8); 3657 if (unlikely(!p)) 3658 goto out_overflow; 3659 xdr_decode_hyper(p, res); 3660 bitmap[0] &= ~FATTR4_WORD0_MAXFILESIZE; 3661 } 3662 dprintk("%s: maxfilesize=%Lu\n", __func__, (unsigned long long)*res); 3663 return status; 3664 out_overflow: 3665 print_overflow_msg(__func__, xdr); 3666 return -EIO; 3667 } 3668 3669 static int decode_attr_maxlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxlink) 3670 { 3671 __be32 *p; 3672 int status = 0; 3673 3674 *maxlink = 1; 3675 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXLINK - 1U))) 3676 return -EIO; 3677 if (likely(bitmap[0] & FATTR4_WORD0_MAXLINK)) { 3678 p = xdr_inline_decode(xdr, 4); 3679 if (unlikely(!p)) 3680 goto out_overflow; 3681 *maxlink = be32_to_cpup(p); 3682 bitmap[0] &= ~FATTR4_WORD0_MAXLINK; 3683 } 3684 dprintk("%s: maxlink=%u\n", __func__, *maxlink); 3685 return status; 3686 out_overflow: 3687 print_overflow_msg(__func__, xdr); 3688 return -EIO; 3689 } 3690 3691 static int decode_attr_maxname(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxname) 3692 { 3693 __be32 *p; 3694 int status = 0; 3695 3696 *maxname = 1024; 3697 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXNAME - 1U))) 3698 return -EIO; 3699 if (likely(bitmap[0] & FATTR4_WORD0_MAXNAME)) { 3700 p = xdr_inline_decode(xdr, 4); 3701 if (unlikely(!p)) 3702 goto out_overflow; 3703 *maxname = be32_to_cpup(p); 3704 bitmap[0] &= ~FATTR4_WORD0_MAXNAME; 3705 } 3706 dprintk("%s: maxname=%u\n", __func__, *maxname); 3707 return status; 3708 out_overflow: 3709 print_overflow_msg(__func__, xdr); 3710 return -EIO; 3711 } 3712 3713 static int decode_attr_maxread(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) 3714 { 3715 __be32 *p; 3716 int status = 0; 3717 3718 *res = 1024; 3719 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXREAD - 1U))) 3720 return -EIO; 3721 if (likely(bitmap[0] & FATTR4_WORD0_MAXREAD)) { 3722 uint64_t maxread; 3723 p = xdr_inline_decode(xdr, 8); 3724 if (unlikely(!p)) 3725 goto out_overflow; 3726 xdr_decode_hyper(p, &maxread); 3727 if (maxread > 0x7FFFFFFF) 3728 maxread = 0x7FFFFFFF; 3729 *res = (uint32_t)maxread; 3730 bitmap[0] &= ~FATTR4_WORD0_MAXREAD; 3731 } 3732 dprintk("%s: maxread=%lu\n", __func__, (unsigned long)*res); 3733 return status; 3734 out_overflow: 3735 print_overflow_msg(__func__, xdr); 3736 return -EIO; 3737 } 3738 3739 static int decode_attr_maxwrite(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) 3740 { 3741 __be32 *p; 3742 int status = 0; 3743 3744 *res = 1024; 3745 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXWRITE - 1U))) 3746 return -EIO; 3747 if (likely(bitmap[0] & FATTR4_WORD0_MAXWRITE)) { 3748 uint64_t maxwrite; 3749 p = xdr_inline_decode(xdr, 8); 3750 if (unlikely(!p)) 3751 goto out_overflow; 3752 xdr_decode_hyper(p, &maxwrite); 3753 if (maxwrite > 0x7FFFFFFF) 3754 maxwrite = 0x7FFFFFFF; 3755 *res = (uint32_t)maxwrite; 3756 bitmap[0] &= ~FATTR4_WORD0_MAXWRITE; 3757 } 3758 dprintk("%s: maxwrite=%lu\n", __func__, (unsigned long)*res); 3759 return status; 3760 out_overflow: 3761 print_overflow_msg(__func__, xdr); 3762 return -EIO; 3763 } 3764 3765 static int decode_attr_mode(struct xdr_stream *xdr, uint32_t *bitmap, umode_t *mode) 3766 { 3767 uint32_t tmp; 3768 __be32 *p; 3769 int ret = 0; 3770 3771 *mode = 0; 3772 if (unlikely(bitmap[1] & (FATTR4_WORD1_MODE - 1U))) 3773 return -EIO; 3774 if (likely(bitmap[1] & FATTR4_WORD1_MODE)) { 3775 p = xdr_inline_decode(xdr, 4); 3776 if (unlikely(!p)) 3777 goto out_overflow; 3778 tmp = be32_to_cpup(p); 3779 *mode = tmp & ~S_IFMT; 3780 bitmap[1] &= ~FATTR4_WORD1_MODE; 3781 ret = NFS_ATTR_FATTR_MODE; 3782 } 3783 dprintk("%s: file mode=0%o\n", __func__, (unsigned int)*mode); 3784 return ret; 3785 out_overflow: 3786 print_overflow_msg(__func__, xdr); 3787 return -EIO; 3788 } 3789 3790 static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *nlink) 3791 { 3792 __be32 *p; 3793 int ret = 0; 3794 3795 *nlink = 1; 3796 if (unlikely(bitmap[1] & (FATTR4_WORD1_NUMLINKS - 1U))) 3797 return -EIO; 3798 if (likely(bitmap[1] & FATTR4_WORD1_NUMLINKS)) { 3799 p = xdr_inline_decode(xdr, 4); 3800 if (unlikely(!p)) 3801 goto out_overflow; 3802 *nlink = be32_to_cpup(p); 3803 bitmap[1] &= ~FATTR4_WORD1_NUMLINKS; 3804 ret = NFS_ATTR_FATTR_NLINK; 3805 } 3806 dprintk("%s: nlink=%u\n", __func__, (unsigned int)*nlink); 3807 return ret; 3808 out_overflow: 3809 print_overflow_msg(__func__, xdr); 3810 return -EIO; 3811 } 3812 3813 static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap, 3814 const struct nfs_server *server, kuid_t *uid, 3815 struct nfs4_string *owner_name) 3816 { 3817 uint32_t len; 3818 __be32 *p; 3819 int ret = 0; 3820 3821 *uid = make_kuid(&init_user_ns, -2); 3822 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER - 1U))) 3823 return -EIO; 3824 if (likely(bitmap[1] & FATTR4_WORD1_OWNER)) { 3825 p = xdr_inline_decode(xdr, 4); 3826 if (unlikely(!p)) 3827 goto out_overflow; 3828 len = be32_to_cpup(p); 3829 p = xdr_inline_decode(xdr, len); 3830 if (unlikely(!p)) 3831 goto out_overflow; 3832 if (owner_name != NULL) { 3833 owner_name->data = kmemdup(p, len, GFP_NOWAIT); 3834 if (owner_name->data != NULL) { 3835 owner_name->len = len; 3836 ret = NFS_ATTR_FATTR_OWNER_NAME; 3837 } 3838 } else if (len < XDR_MAX_NETOBJ) { 3839 if (nfs_map_name_to_uid(server, (char *)p, len, uid) == 0) 3840 ret = NFS_ATTR_FATTR_OWNER; 3841 else 3842 dprintk("%s: nfs_map_name_to_uid failed!\n", 3843 __func__); 3844 } else 3845 dprintk("%s: name too long (%u)!\n", 3846 __func__, len); 3847 bitmap[1] &= ~FATTR4_WORD1_OWNER; 3848 } 3849 dprintk("%s: uid=%d\n", __func__, (int)from_kuid(&init_user_ns, *uid)); 3850 return ret; 3851 out_overflow: 3852 print_overflow_msg(__func__, xdr); 3853 return -EIO; 3854 } 3855 3856 static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap, 3857 const struct nfs_server *server, kgid_t *gid, 3858 struct nfs4_string *group_name) 3859 { 3860 uint32_t len; 3861 __be32 *p; 3862 int ret = 0; 3863 3864 *gid = make_kgid(&init_user_ns, -2); 3865 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER_GROUP - 1U))) 3866 return -EIO; 3867 if (likely(bitmap[1] & FATTR4_WORD1_OWNER_GROUP)) { 3868 p = xdr_inline_decode(xdr, 4); 3869 if (unlikely(!p)) 3870 goto out_overflow; 3871 len = be32_to_cpup(p); 3872 p = xdr_inline_decode(xdr, len); 3873 if (unlikely(!p)) 3874 goto out_overflow; 3875 if (group_name != NULL) { 3876 group_name->data = kmemdup(p, len, GFP_NOWAIT); 3877 if (group_name->data != NULL) { 3878 group_name->len = len; 3879 ret = NFS_ATTR_FATTR_GROUP_NAME; 3880 } 3881 } else if (len < XDR_MAX_NETOBJ) { 3882 if (nfs_map_group_to_gid(server, (char *)p, len, gid) == 0) 3883 ret = NFS_ATTR_FATTR_GROUP; 3884 else 3885 dprintk("%s: nfs_map_group_to_gid failed!\n", 3886 __func__); 3887 } else 3888 dprintk("%s: name too long (%u)!\n", 3889 __func__, len); 3890 bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP; 3891 } 3892 dprintk("%s: gid=%d\n", __func__, (int)from_kgid(&init_user_ns, *gid)); 3893 return ret; 3894 out_overflow: 3895 print_overflow_msg(__func__, xdr); 3896 return -EIO; 3897 } 3898 3899 static int decode_attr_rdev(struct xdr_stream *xdr, uint32_t *bitmap, dev_t *rdev) 3900 { 3901 uint32_t major = 0, minor = 0; 3902 __be32 *p; 3903 int ret = 0; 3904 3905 *rdev = MKDEV(0,0); 3906 if (unlikely(bitmap[1] & (FATTR4_WORD1_RAWDEV - 1U))) 3907 return -EIO; 3908 if (likely(bitmap[1] & FATTR4_WORD1_RAWDEV)) { 3909 dev_t tmp; 3910 3911 p = xdr_inline_decode(xdr, 8); 3912 if (unlikely(!p)) 3913 goto out_overflow; 3914 major = be32_to_cpup(p++); 3915 minor = be32_to_cpup(p); 3916 tmp = MKDEV(major, minor); 3917 if (MAJOR(tmp) == major && MINOR(tmp) == minor) 3918 *rdev = tmp; 3919 bitmap[1] &= ~ FATTR4_WORD1_RAWDEV; 3920 ret = NFS_ATTR_FATTR_RDEV; 3921 } 3922 dprintk("%s: rdev=(0x%x:0x%x)\n", __func__, major, minor); 3923 return ret; 3924 out_overflow: 3925 print_overflow_msg(__func__, xdr); 3926 return -EIO; 3927 } 3928 3929 static int decode_attr_space_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 3930 { 3931 __be32 *p; 3932 int status = 0; 3933 3934 *res = 0; 3935 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_AVAIL - 1U))) 3936 return -EIO; 3937 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_AVAIL)) { 3938 p = xdr_inline_decode(xdr, 8); 3939 if (unlikely(!p)) 3940 goto out_overflow; 3941 xdr_decode_hyper(p, res); 3942 bitmap[1] &= ~FATTR4_WORD1_SPACE_AVAIL; 3943 } 3944 dprintk("%s: space avail=%Lu\n", __func__, (unsigned long long)*res); 3945 return status; 3946 out_overflow: 3947 print_overflow_msg(__func__, xdr); 3948 return -EIO; 3949 } 3950 3951 static int decode_attr_space_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 3952 { 3953 __be32 *p; 3954 int status = 0; 3955 3956 *res = 0; 3957 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_FREE - 1U))) 3958 return -EIO; 3959 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_FREE)) { 3960 p = xdr_inline_decode(xdr, 8); 3961 if (unlikely(!p)) 3962 goto out_overflow; 3963 xdr_decode_hyper(p, res); 3964 bitmap[1] &= ~FATTR4_WORD1_SPACE_FREE; 3965 } 3966 dprintk("%s: space free=%Lu\n", __func__, (unsigned long long)*res); 3967 return status; 3968 out_overflow: 3969 print_overflow_msg(__func__, xdr); 3970 return -EIO; 3971 } 3972 3973 static int decode_attr_space_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 3974 { 3975 __be32 *p; 3976 int status = 0; 3977 3978 *res = 0; 3979 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_TOTAL - 1U))) 3980 return -EIO; 3981 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_TOTAL)) { 3982 p = xdr_inline_decode(xdr, 8); 3983 if (unlikely(!p)) 3984 goto out_overflow; 3985 xdr_decode_hyper(p, res); 3986 bitmap[1] &= ~FATTR4_WORD1_SPACE_TOTAL; 3987 } 3988 dprintk("%s: space total=%Lu\n", __func__, (unsigned long long)*res); 3989 return status; 3990 out_overflow: 3991 print_overflow_msg(__func__, xdr); 3992 return -EIO; 3993 } 3994 3995 static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *used) 3996 { 3997 __be32 *p; 3998 int ret = 0; 3999 4000 *used = 0; 4001 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_USED - 1U))) 4002 return -EIO; 4003 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_USED)) { 4004 p = xdr_inline_decode(xdr, 8); 4005 if (unlikely(!p)) 4006 goto out_overflow; 4007 xdr_decode_hyper(p, used); 4008 bitmap[1] &= ~FATTR4_WORD1_SPACE_USED; 4009 ret = NFS_ATTR_FATTR_SPACE_USED; 4010 } 4011 dprintk("%s: space used=%Lu\n", __func__, 4012 (unsigned long long)*used); 4013 return ret; 4014 out_overflow: 4015 print_overflow_msg(__func__, xdr); 4016 return -EIO; 4017 } 4018 4019 static int decode_attr_time(struct xdr_stream *xdr, struct timespec *time) 4020 { 4021 __be32 *p; 4022 uint64_t sec; 4023 uint32_t nsec; 4024 4025 p = xdr_inline_decode(xdr, 12); 4026 if (unlikely(!p)) 4027 goto out_overflow; 4028 p = xdr_decode_hyper(p, &sec); 4029 nsec = be32_to_cpup(p); 4030 time->tv_sec = (time_t)sec; 4031 time->tv_nsec = (long)nsec; 4032 return 0; 4033 out_overflow: 4034 print_overflow_msg(__func__, xdr); 4035 return -EIO; 4036 } 4037 4038 static int decode_attr_time_access(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time) 4039 { 4040 int status = 0; 4041 4042 time->tv_sec = 0; 4043 time->tv_nsec = 0; 4044 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_ACCESS - 1U))) 4045 return -EIO; 4046 if (likely(bitmap[1] & FATTR4_WORD1_TIME_ACCESS)) { 4047 status = decode_attr_time(xdr, time); 4048 if (status == 0) 4049 status = NFS_ATTR_FATTR_ATIME; 4050 bitmap[1] &= ~FATTR4_WORD1_TIME_ACCESS; 4051 } 4052 dprintk("%s: atime=%ld\n", __func__, (long)time->tv_sec); 4053 return status; 4054 } 4055 4056 static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time) 4057 { 4058 int status = 0; 4059 4060 time->tv_sec = 0; 4061 time->tv_nsec = 0; 4062 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_METADATA - 1U))) 4063 return -EIO; 4064 if (likely(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) { 4065 status = decode_attr_time(xdr, time); 4066 if (status == 0) 4067 status = NFS_ATTR_FATTR_CTIME; 4068 bitmap[1] &= ~FATTR4_WORD1_TIME_METADATA; 4069 } 4070 dprintk("%s: ctime=%ld\n", __func__, (long)time->tv_sec); 4071 return status; 4072 } 4073 4074 static int decode_attr_time_delta(struct xdr_stream *xdr, uint32_t *bitmap, 4075 struct timespec *time) 4076 { 4077 int status = 0; 4078 4079 time->tv_sec = 0; 4080 time->tv_nsec = 0; 4081 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_DELTA - 1U))) 4082 return -EIO; 4083 if (likely(bitmap[1] & FATTR4_WORD1_TIME_DELTA)) { 4084 status = decode_attr_time(xdr, time); 4085 bitmap[1] &= ~FATTR4_WORD1_TIME_DELTA; 4086 } 4087 dprintk("%s: time_delta=%ld %ld\n", __func__, (long)time->tv_sec, 4088 (long)time->tv_nsec); 4089 return status; 4090 } 4091 4092 static int decode_attr_security_label(struct xdr_stream *xdr, uint32_t *bitmap, 4093 struct nfs4_label *label) 4094 { 4095 uint32_t pi = 0; 4096 uint32_t lfs = 0; 4097 __u32 len; 4098 __be32 *p; 4099 int status = 0; 4100 4101 if (unlikely(bitmap[2] & (FATTR4_WORD2_SECURITY_LABEL - 1U))) 4102 return -EIO; 4103 if (likely(bitmap[2] & FATTR4_WORD2_SECURITY_LABEL)) { 4104 p = xdr_inline_decode(xdr, 4); 4105 if (unlikely(!p)) 4106 goto out_overflow; 4107 lfs = be32_to_cpup(p++); 4108 p = xdr_inline_decode(xdr, 4); 4109 if (unlikely(!p)) 4110 goto out_overflow; 4111 pi = be32_to_cpup(p++); 4112 p = xdr_inline_decode(xdr, 4); 4113 if (unlikely(!p)) 4114 goto out_overflow; 4115 len = be32_to_cpup(p++); 4116 p = xdr_inline_decode(xdr, len); 4117 if (unlikely(!p)) 4118 goto out_overflow; 4119 if (len < NFS4_MAXLABELLEN) { 4120 if (label) { 4121 memcpy(label->label, p, len); 4122 label->len = len; 4123 label->pi = pi; 4124 label->lfs = lfs; 4125 status = NFS_ATTR_FATTR_V4_SECURITY_LABEL; 4126 } 4127 bitmap[2] &= ~FATTR4_WORD2_SECURITY_LABEL; 4128 } else 4129 printk(KERN_WARNING "%s: label too long (%u)!\n", 4130 __func__, len); 4131 } 4132 if (label && label->label) 4133 dprintk("%s: label=%s, len=%d, PI=%d, LFS=%d\n", __func__, 4134 (char *)label->label, label->len, label->pi, label->lfs); 4135 return status; 4136 4137 out_overflow: 4138 print_overflow_msg(__func__, xdr); 4139 return -EIO; 4140 } 4141 4142 static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time) 4143 { 4144 int status = 0; 4145 4146 time->tv_sec = 0; 4147 time->tv_nsec = 0; 4148 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_MODIFY - 1U))) 4149 return -EIO; 4150 if (likely(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) { 4151 status = decode_attr_time(xdr, time); 4152 if (status == 0) 4153 status = NFS_ATTR_FATTR_MTIME; 4154 bitmap[1] &= ~FATTR4_WORD1_TIME_MODIFY; 4155 } 4156 dprintk("%s: mtime=%ld\n", __func__, (long)time->tv_sec); 4157 return status; 4158 } 4159 4160 static int verify_attr_len(struct xdr_stream *xdr, unsigned int savep, uint32_t attrlen) 4161 { 4162 unsigned int attrwords = XDR_QUADLEN(attrlen); 4163 unsigned int nwords = (xdr_stream_pos(xdr) - savep) >> 2; 4164 4165 if (unlikely(attrwords != nwords)) { 4166 dprintk("%s: server returned incorrect attribute length: " 4167 "%u %c %u\n", 4168 __func__, 4169 attrwords << 2, 4170 (attrwords < nwords) ? '<' : '>', 4171 nwords << 2); 4172 return -EIO; 4173 } 4174 return 0; 4175 } 4176 4177 static int decode_change_info(struct xdr_stream *xdr, struct nfs4_change_info *cinfo) 4178 { 4179 __be32 *p; 4180 4181 p = xdr_inline_decode(xdr, 20); 4182 if (unlikely(!p)) 4183 goto out_overflow; 4184 cinfo->atomic = be32_to_cpup(p++); 4185 p = xdr_decode_hyper(p, &cinfo->before); 4186 xdr_decode_hyper(p, &cinfo->after); 4187 return 0; 4188 out_overflow: 4189 print_overflow_msg(__func__, xdr); 4190 return -EIO; 4191 } 4192 4193 static int decode_access(struct xdr_stream *xdr, u32 *supported, u32 *access) 4194 { 4195 __be32 *p; 4196 uint32_t supp, acc; 4197 int status; 4198 4199 status = decode_op_hdr(xdr, OP_ACCESS); 4200 if (status) 4201 return status; 4202 p = xdr_inline_decode(xdr, 8); 4203 if (unlikely(!p)) 4204 goto out_overflow; 4205 supp = be32_to_cpup(p++); 4206 acc = be32_to_cpup(p); 4207 *supported = supp; 4208 *access = acc; 4209 return 0; 4210 out_overflow: 4211 print_overflow_msg(__func__, xdr); 4212 return -EIO; 4213 } 4214 4215 static int decode_opaque_fixed(struct xdr_stream *xdr, void *buf, size_t len) 4216 { 4217 __be32 *p; 4218 4219 p = xdr_inline_decode(xdr, len); 4220 if (likely(p)) { 4221 memcpy(buf, p, len); 4222 return 0; 4223 } 4224 print_overflow_msg(__func__, xdr); 4225 return -EIO; 4226 } 4227 4228 static int decode_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid) 4229 { 4230 return decode_opaque_fixed(xdr, stateid, NFS4_STATEID_SIZE); 4231 } 4232 4233 static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res) 4234 { 4235 int status; 4236 4237 status = decode_op_hdr(xdr, OP_CLOSE); 4238 if (status != -EIO) 4239 nfs_increment_open_seqid(status, res->seqid); 4240 if (!status) 4241 status = decode_stateid(xdr, &res->stateid); 4242 return status; 4243 } 4244 4245 static int decode_verifier(struct xdr_stream *xdr, void *verifier) 4246 { 4247 return decode_opaque_fixed(xdr, verifier, NFS4_VERIFIER_SIZE); 4248 } 4249 4250 static int decode_write_verifier(struct xdr_stream *xdr, struct nfs_write_verifier *verifier) 4251 { 4252 return decode_opaque_fixed(xdr, verifier->data, NFS4_VERIFIER_SIZE); 4253 } 4254 4255 static int decode_commit(struct xdr_stream *xdr, struct nfs_commitres *res) 4256 { 4257 int status; 4258 4259 status = decode_op_hdr(xdr, OP_COMMIT); 4260 if (!status) 4261 status = decode_write_verifier(xdr, &res->verf->verifier); 4262 return status; 4263 } 4264 4265 static int decode_create(struct xdr_stream *xdr, struct nfs4_change_info *cinfo) 4266 { 4267 __be32 *p; 4268 uint32_t bmlen; 4269 int status; 4270 4271 status = decode_op_hdr(xdr, OP_CREATE); 4272 if (status) 4273 return status; 4274 if ((status = decode_change_info(xdr, cinfo))) 4275 return status; 4276 p = xdr_inline_decode(xdr, 4); 4277 if (unlikely(!p)) 4278 goto out_overflow; 4279 bmlen = be32_to_cpup(p); 4280 p = xdr_inline_decode(xdr, bmlen << 2); 4281 if (likely(p)) 4282 return 0; 4283 out_overflow: 4284 print_overflow_msg(__func__, xdr); 4285 return -EIO; 4286 } 4287 4288 static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_res *res) 4289 { 4290 unsigned int savep; 4291 uint32_t attrlen, bitmap[3] = {0}; 4292 int status; 4293 4294 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) 4295 goto xdr_error; 4296 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) 4297 goto xdr_error; 4298 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) 4299 goto xdr_error; 4300 if ((status = decode_attr_supported(xdr, bitmap, res->attr_bitmask)) != 0) 4301 goto xdr_error; 4302 if ((status = decode_attr_fh_expire_type(xdr, bitmap, 4303 &res->fh_expire_type)) != 0) 4304 goto xdr_error; 4305 if ((status = decode_attr_link_support(xdr, bitmap, &res->has_links)) != 0) 4306 goto xdr_error; 4307 if ((status = decode_attr_symlink_support(xdr, bitmap, &res->has_symlinks)) != 0) 4308 goto xdr_error; 4309 if ((status = decode_attr_aclsupport(xdr, bitmap, &res->acl_bitmask)) != 0) 4310 goto xdr_error; 4311 status = verify_attr_len(xdr, savep, attrlen); 4312 xdr_error: 4313 dprintk("%s: xdr returned %d!\n", __func__, -status); 4314 return status; 4315 } 4316 4317 static int decode_statfs(struct xdr_stream *xdr, struct nfs_fsstat *fsstat) 4318 { 4319 unsigned int savep; 4320 uint32_t attrlen, bitmap[3] = {0}; 4321 int status; 4322 4323 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) 4324 goto xdr_error; 4325 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) 4326 goto xdr_error; 4327 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) 4328 goto xdr_error; 4329 4330 if ((status = decode_attr_files_avail(xdr, bitmap, &fsstat->afiles)) != 0) 4331 goto xdr_error; 4332 if ((status = decode_attr_files_free(xdr, bitmap, &fsstat->ffiles)) != 0) 4333 goto xdr_error; 4334 if ((status = decode_attr_files_total(xdr, bitmap, &fsstat->tfiles)) != 0) 4335 goto xdr_error; 4336 if ((status = decode_attr_space_avail(xdr, bitmap, &fsstat->abytes)) != 0) 4337 goto xdr_error; 4338 if ((status = decode_attr_space_free(xdr, bitmap, &fsstat->fbytes)) != 0) 4339 goto xdr_error; 4340 if ((status = decode_attr_space_total(xdr, bitmap, &fsstat->tbytes)) != 0) 4341 goto xdr_error; 4342 4343 status = verify_attr_len(xdr, savep, attrlen); 4344 xdr_error: 4345 dprintk("%s: xdr returned %d!\n", __func__, -status); 4346 return status; 4347 } 4348 4349 static int decode_pathconf(struct xdr_stream *xdr, struct nfs_pathconf *pathconf) 4350 { 4351 unsigned int savep; 4352 uint32_t attrlen, bitmap[3] = {0}; 4353 int status; 4354 4355 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) 4356 goto xdr_error; 4357 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) 4358 goto xdr_error; 4359 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) 4360 goto xdr_error; 4361 4362 if ((status = decode_attr_maxlink(xdr, bitmap, &pathconf->max_link)) != 0) 4363 goto xdr_error; 4364 if ((status = decode_attr_maxname(xdr, bitmap, &pathconf->max_namelen)) != 0) 4365 goto xdr_error; 4366 4367 status = verify_attr_len(xdr, savep, attrlen); 4368 xdr_error: 4369 dprintk("%s: xdr returned %d!\n", __func__, -status); 4370 return status; 4371 } 4372 4373 static int decode_threshold_hint(struct xdr_stream *xdr, 4374 uint32_t *bitmap, 4375 uint64_t *res, 4376 uint32_t hint_bit) 4377 { 4378 __be32 *p; 4379 4380 *res = 0; 4381 if (likely(bitmap[0] & hint_bit)) { 4382 p = xdr_inline_decode(xdr, 8); 4383 if (unlikely(!p)) 4384 goto out_overflow; 4385 xdr_decode_hyper(p, res); 4386 } 4387 return 0; 4388 out_overflow: 4389 print_overflow_msg(__func__, xdr); 4390 return -EIO; 4391 } 4392 4393 static int decode_first_threshold_item4(struct xdr_stream *xdr, 4394 struct nfs4_threshold *res) 4395 { 4396 __be32 *p; 4397 unsigned int savep; 4398 uint32_t bitmap[3] = {0,}, attrlen; 4399 int status; 4400 4401 /* layout type */ 4402 p = xdr_inline_decode(xdr, 4); 4403 if (unlikely(!p)) { 4404 print_overflow_msg(__func__, xdr); 4405 return -EIO; 4406 } 4407 res->l_type = be32_to_cpup(p); 4408 4409 /* thi_hintset bitmap */ 4410 status = decode_attr_bitmap(xdr, bitmap); 4411 if (status < 0) 4412 goto xdr_error; 4413 4414 /* thi_hintlist length */ 4415 status = decode_attr_length(xdr, &attrlen, &savep); 4416 if (status < 0) 4417 goto xdr_error; 4418 /* thi_hintlist */ 4419 status = decode_threshold_hint(xdr, bitmap, &res->rd_sz, THRESHOLD_RD); 4420 if (status < 0) 4421 goto xdr_error; 4422 status = decode_threshold_hint(xdr, bitmap, &res->wr_sz, THRESHOLD_WR); 4423 if (status < 0) 4424 goto xdr_error; 4425 status = decode_threshold_hint(xdr, bitmap, &res->rd_io_sz, 4426 THRESHOLD_RD_IO); 4427 if (status < 0) 4428 goto xdr_error; 4429 status = decode_threshold_hint(xdr, bitmap, &res->wr_io_sz, 4430 THRESHOLD_WR_IO); 4431 if (status < 0) 4432 goto xdr_error; 4433 4434 status = verify_attr_len(xdr, savep, attrlen); 4435 res->bm = bitmap[0]; 4436 4437 dprintk("%s bm=0x%x rd_sz=%llu wr_sz=%llu rd_io=%llu wr_io=%llu\n", 4438 __func__, res->bm, res->rd_sz, res->wr_sz, res->rd_io_sz, 4439 res->wr_io_sz); 4440 xdr_error: 4441 dprintk("%s ret=%d!\n", __func__, status); 4442 return status; 4443 } 4444 4445 /* 4446 * Thresholds on pNFS direct I/O vrs MDS I/O 4447 */ 4448 static int decode_attr_mdsthreshold(struct xdr_stream *xdr, 4449 uint32_t *bitmap, 4450 struct nfs4_threshold *res) 4451 { 4452 __be32 *p; 4453 int status = 0; 4454 uint32_t num; 4455 4456 if (unlikely(bitmap[2] & (FATTR4_WORD2_MDSTHRESHOLD - 1U))) 4457 return -EIO; 4458 if (bitmap[2] & FATTR4_WORD2_MDSTHRESHOLD) { 4459 /* Did the server return an unrequested attribute? */ 4460 if (unlikely(res == NULL)) 4461 return -EREMOTEIO; 4462 p = xdr_inline_decode(xdr, 4); 4463 if (unlikely(!p)) 4464 goto out_overflow; 4465 num = be32_to_cpup(p); 4466 if (num == 0) 4467 return 0; 4468 if (num > 1) 4469 printk(KERN_INFO "%s: Warning: Multiple pNFS layout " 4470 "drivers per filesystem not supported\n", 4471 __func__); 4472 4473 status = decode_first_threshold_item4(xdr, res); 4474 bitmap[2] &= ~FATTR4_WORD2_MDSTHRESHOLD; 4475 } 4476 return status; 4477 out_overflow: 4478 print_overflow_msg(__func__, xdr); 4479 return -EIO; 4480 } 4481 4482 static int decode_getfattr_attrs(struct xdr_stream *xdr, uint32_t *bitmap, 4483 struct nfs_fattr *fattr, struct nfs_fh *fh, 4484 struct nfs4_fs_locations *fs_loc, struct nfs4_label *label, 4485 const struct nfs_server *server) 4486 { 4487 int status; 4488 umode_t fmode = 0; 4489 uint32_t type; 4490 int32_t err; 4491 4492 status = decode_attr_type(xdr, bitmap, &type); 4493 if (status < 0) 4494 goto xdr_error; 4495 fattr->mode = 0; 4496 if (status != 0) { 4497 fattr->mode |= nfs_type2fmt[type]; 4498 fattr->valid |= status; 4499 } 4500 4501 status = decode_attr_change(xdr, bitmap, &fattr->change_attr); 4502 if (status < 0) 4503 goto xdr_error; 4504 fattr->valid |= status; 4505 4506 status = decode_attr_size(xdr, bitmap, &fattr->size); 4507 if (status < 0) 4508 goto xdr_error; 4509 fattr->valid |= status; 4510 4511 status = decode_attr_fsid(xdr, bitmap, &fattr->fsid); 4512 if (status < 0) 4513 goto xdr_error; 4514 fattr->valid |= status; 4515 4516 err = 0; 4517 status = decode_attr_error(xdr, bitmap, &err); 4518 if (status < 0) 4519 goto xdr_error; 4520 4521 status = decode_attr_filehandle(xdr, bitmap, fh); 4522 if (status < 0) 4523 goto xdr_error; 4524 4525 status = decode_attr_fileid(xdr, bitmap, &fattr->fileid); 4526 if (status < 0) 4527 goto xdr_error; 4528 fattr->valid |= status; 4529 4530 status = decode_attr_fs_locations(xdr, bitmap, fs_loc); 4531 if (status < 0) 4532 goto xdr_error; 4533 fattr->valid |= status; 4534 4535 status = decode_attr_mode(xdr, bitmap, &fmode); 4536 if (status < 0) 4537 goto xdr_error; 4538 if (status != 0) { 4539 fattr->mode |= fmode; 4540 fattr->valid |= status; 4541 } 4542 4543 status = decode_attr_nlink(xdr, bitmap, &fattr->nlink); 4544 if (status < 0) 4545 goto xdr_error; 4546 fattr->valid |= status; 4547 4548 status = decode_attr_owner(xdr, bitmap, server, &fattr->uid, fattr->owner_name); 4549 if (status < 0) 4550 goto xdr_error; 4551 fattr->valid |= status; 4552 4553 status = decode_attr_group(xdr, bitmap, server, &fattr->gid, fattr->group_name); 4554 if (status < 0) 4555 goto xdr_error; 4556 fattr->valid |= status; 4557 4558 status = decode_attr_rdev(xdr, bitmap, &fattr->rdev); 4559 if (status < 0) 4560 goto xdr_error; 4561 fattr->valid |= status; 4562 4563 status = decode_attr_space_used(xdr, bitmap, &fattr->du.nfs3.used); 4564 if (status < 0) 4565 goto xdr_error; 4566 fattr->valid |= status; 4567 4568 status = decode_attr_time_access(xdr, bitmap, &fattr->atime); 4569 if (status < 0) 4570 goto xdr_error; 4571 fattr->valid |= status; 4572 4573 status = decode_attr_time_metadata(xdr, bitmap, &fattr->ctime); 4574 if (status < 0) 4575 goto xdr_error; 4576 fattr->valid |= status; 4577 4578 status = decode_attr_time_modify(xdr, bitmap, &fattr->mtime); 4579 if (status < 0) 4580 goto xdr_error; 4581 fattr->valid |= status; 4582 4583 status = decode_attr_mounted_on_fileid(xdr, bitmap, &fattr->mounted_on_fileid); 4584 if (status < 0) 4585 goto xdr_error; 4586 fattr->valid |= status; 4587 4588 status = decode_attr_mdsthreshold(xdr, bitmap, fattr->mdsthreshold); 4589 if (status < 0) 4590 goto xdr_error; 4591 4592 if (label) { 4593 status = decode_attr_security_label(xdr, bitmap, label); 4594 if (status < 0) 4595 goto xdr_error; 4596 fattr->valid |= status; 4597 } 4598 4599 xdr_error: 4600 dprintk("%s: xdr returned %d\n", __func__, -status); 4601 return status; 4602 } 4603 4604 static int decode_getfattr_generic(struct xdr_stream *xdr, struct nfs_fattr *fattr, 4605 struct nfs_fh *fh, struct nfs4_fs_locations *fs_loc, 4606 struct nfs4_label *label, const struct nfs_server *server) 4607 { 4608 unsigned int savep; 4609 uint32_t attrlen, 4610 bitmap[3] = {0}; 4611 int status; 4612 4613 status = decode_op_hdr(xdr, OP_GETATTR); 4614 if (status < 0) 4615 goto xdr_error; 4616 4617 status = decode_attr_bitmap(xdr, bitmap); 4618 if (status < 0) 4619 goto xdr_error; 4620 4621 status = decode_attr_length(xdr, &attrlen, &savep); 4622 if (status < 0) 4623 goto xdr_error; 4624 4625 status = decode_getfattr_attrs(xdr, bitmap, fattr, fh, fs_loc, 4626 label, server); 4627 if (status < 0) 4628 goto xdr_error; 4629 4630 status = verify_attr_len(xdr, savep, attrlen); 4631 xdr_error: 4632 dprintk("%s: xdr returned %d\n", __func__, -status); 4633 return status; 4634 } 4635 4636 static int decode_getfattr_label(struct xdr_stream *xdr, struct nfs_fattr *fattr, 4637 struct nfs4_label *label, const struct nfs_server *server) 4638 { 4639 return decode_getfattr_generic(xdr, fattr, NULL, NULL, label, server); 4640 } 4641 4642 static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr, 4643 const struct nfs_server *server) 4644 { 4645 return decode_getfattr_generic(xdr, fattr, NULL, NULL, NULL, server); 4646 } 4647 4648 /* 4649 * Decode potentially multiple layout types. Currently we only support 4650 * one layout driver per file system. 4651 */ 4652 static int decode_first_pnfs_layout_type(struct xdr_stream *xdr, 4653 uint32_t *layouttype) 4654 { 4655 __be32 *p; 4656 int num; 4657 4658 p = xdr_inline_decode(xdr, 4); 4659 if (unlikely(!p)) 4660 goto out_overflow; 4661 num = be32_to_cpup(p); 4662 4663 /* pNFS is not supported by the underlying file system */ 4664 if (num == 0) { 4665 *layouttype = 0; 4666 return 0; 4667 } 4668 if (num > 1) 4669 printk(KERN_INFO "NFS: %s: Warning: Multiple pNFS layout " 4670 "drivers per filesystem not supported\n", __func__); 4671 4672 /* Decode and set first layout type, move xdr->p past unused types */ 4673 p = xdr_inline_decode(xdr, num * 4); 4674 if (unlikely(!p)) 4675 goto out_overflow; 4676 *layouttype = be32_to_cpup(p); 4677 return 0; 4678 out_overflow: 4679 print_overflow_msg(__func__, xdr); 4680 return -EIO; 4681 } 4682 4683 /* 4684 * The type of file system exported. 4685 * Note we must ensure that layouttype is set in any non-error case. 4686 */ 4687 static int decode_attr_pnfstype(struct xdr_stream *xdr, uint32_t *bitmap, 4688 uint32_t *layouttype) 4689 { 4690 int status = 0; 4691 4692 dprintk("%s: bitmap is %x\n", __func__, bitmap[1]); 4693 if (unlikely(bitmap[1] & (FATTR4_WORD1_FS_LAYOUT_TYPES - 1U))) 4694 return -EIO; 4695 if (bitmap[1] & FATTR4_WORD1_FS_LAYOUT_TYPES) { 4696 status = decode_first_pnfs_layout_type(xdr, layouttype); 4697 bitmap[1] &= ~FATTR4_WORD1_FS_LAYOUT_TYPES; 4698 } else 4699 *layouttype = 0; 4700 return status; 4701 } 4702 4703 /* 4704 * The prefered block size for layout directed io 4705 */ 4706 static int decode_attr_layout_blksize(struct xdr_stream *xdr, uint32_t *bitmap, 4707 uint32_t *res) 4708 { 4709 __be32 *p; 4710 4711 dprintk("%s: bitmap is %x\n", __func__, bitmap[2]); 4712 *res = 0; 4713 if (bitmap[2] & FATTR4_WORD2_LAYOUT_BLKSIZE) { 4714 p = xdr_inline_decode(xdr, 4); 4715 if (unlikely(!p)) { 4716 print_overflow_msg(__func__, xdr); 4717 return -EIO; 4718 } 4719 *res = be32_to_cpup(p); 4720 bitmap[2] &= ~FATTR4_WORD2_LAYOUT_BLKSIZE; 4721 } 4722 return 0; 4723 } 4724 4725 static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo) 4726 { 4727 unsigned int savep; 4728 uint32_t attrlen, bitmap[3]; 4729 int status; 4730 4731 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) 4732 goto xdr_error; 4733 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) 4734 goto xdr_error; 4735 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) 4736 goto xdr_error; 4737 4738 fsinfo->rtmult = fsinfo->wtmult = 512; /* ??? */ 4739 4740 if ((status = decode_attr_lease_time(xdr, bitmap, &fsinfo->lease_time)) != 0) 4741 goto xdr_error; 4742 if ((status = decode_attr_maxfilesize(xdr, bitmap, &fsinfo->maxfilesize)) != 0) 4743 goto xdr_error; 4744 if ((status = decode_attr_maxread(xdr, bitmap, &fsinfo->rtmax)) != 0) 4745 goto xdr_error; 4746 fsinfo->rtpref = fsinfo->dtpref = fsinfo->rtmax; 4747 if ((status = decode_attr_maxwrite(xdr, bitmap, &fsinfo->wtmax)) != 0) 4748 goto xdr_error; 4749 fsinfo->wtpref = fsinfo->wtmax; 4750 status = decode_attr_time_delta(xdr, bitmap, &fsinfo->time_delta); 4751 if (status != 0) 4752 goto xdr_error; 4753 status = decode_attr_pnfstype(xdr, bitmap, &fsinfo->layouttype); 4754 if (status != 0) 4755 goto xdr_error; 4756 status = decode_attr_layout_blksize(xdr, bitmap, &fsinfo->blksize); 4757 if (status) 4758 goto xdr_error; 4759 4760 status = verify_attr_len(xdr, savep, attrlen); 4761 xdr_error: 4762 dprintk("%s: xdr returned %d!\n", __func__, -status); 4763 return status; 4764 } 4765 4766 static int decode_getfh(struct xdr_stream *xdr, struct nfs_fh *fh) 4767 { 4768 __be32 *p; 4769 uint32_t len; 4770 int status; 4771 4772 /* Zero handle first to allow comparisons */ 4773 memset(fh, 0, sizeof(*fh)); 4774 4775 status = decode_op_hdr(xdr, OP_GETFH); 4776 if (status) 4777 return status; 4778 4779 p = xdr_inline_decode(xdr, 4); 4780 if (unlikely(!p)) 4781 goto out_overflow; 4782 len = be32_to_cpup(p); 4783 if (len > NFS4_FHSIZE) 4784 return -EIO; 4785 fh->size = len; 4786 p = xdr_inline_decode(xdr, len); 4787 if (unlikely(!p)) 4788 goto out_overflow; 4789 memcpy(fh->data, p, len); 4790 return 0; 4791 out_overflow: 4792 print_overflow_msg(__func__, xdr); 4793 return -EIO; 4794 } 4795 4796 static int decode_link(struct xdr_stream *xdr, struct nfs4_change_info *cinfo) 4797 { 4798 int status; 4799 4800 status = decode_op_hdr(xdr, OP_LINK); 4801 if (status) 4802 return status; 4803 return decode_change_info(xdr, cinfo); 4804 } 4805 4806 /* 4807 * We create the owner, so we know a proper owner.id length is 4. 4808 */ 4809 static int decode_lock_denied (struct xdr_stream *xdr, struct file_lock *fl) 4810 { 4811 uint64_t offset, length, clientid; 4812 __be32 *p; 4813 uint32_t namelen, type; 4814 4815 p = xdr_inline_decode(xdr, 32); /* read 32 bytes */ 4816 if (unlikely(!p)) 4817 goto out_overflow; 4818 p = xdr_decode_hyper(p, &offset); /* read 2 8-byte long words */ 4819 p = xdr_decode_hyper(p, &length); 4820 type = be32_to_cpup(p++); /* 4 byte read */ 4821 if (fl != NULL) { /* manipulate file lock */ 4822 fl->fl_start = (loff_t)offset; 4823 fl->fl_end = fl->fl_start + (loff_t)length - 1; 4824 if (length == ~(uint64_t)0) 4825 fl->fl_end = OFFSET_MAX; 4826 fl->fl_type = F_WRLCK; 4827 if (type & 1) 4828 fl->fl_type = F_RDLCK; 4829 fl->fl_pid = 0; 4830 } 4831 p = xdr_decode_hyper(p, &clientid); /* read 8 bytes */ 4832 namelen = be32_to_cpup(p); /* read 4 bytes */ /* have read all 32 bytes now */ 4833 p = xdr_inline_decode(xdr, namelen); /* variable size field */ 4834 if (likely(p)) 4835 return -NFS4ERR_DENIED; 4836 out_overflow: 4837 print_overflow_msg(__func__, xdr); 4838 return -EIO; 4839 } 4840 4841 static int decode_lock(struct xdr_stream *xdr, struct nfs_lock_res *res) 4842 { 4843 int status; 4844 4845 status = decode_op_hdr(xdr, OP_LOCK); 4846 if (status == -EIO) 4847 goto out; 4848 if (status == 0) { 4849 status = decode_stateid(xdr, &res->stateid); 4850 if (unlikely(status)) 4851 goto out; 4852 } else if (status == -NFS4ERR_DENIED) 4853 status = decode_lock_denied(xdr, NULL); 4854 if (res->open_seqid != NULL) 4855 nfs_increment_open_seqid(status, res->open_seqid); 4856 nfs_increment_lock_seqid(status, res->lock_seqid); 4857 out: 4858 return status; 4859 } 4860 4861 static int decode_lockt(struct xdr_stream *xdr, struct nfs_lockt_res *res) 4862 { 4863 int status; 4864 status = decode_op_hdr(xdr, OP_LOCKT); 4865 if (status == -NFS4ERR_DENIED) 4866 return decode_lock_denied(xdr, res->denied); 4867 return status; 4868 } 4869 4870 static int decode_locku(struct xdr_stream *xdr, struct nfs_locku_res *res) 4871 { 4872 int status; 4873 4874 status = decode_op_hdr(xdr, OP_LOCKU); 4875 if (status != -EIO) 4876 nfs_increment_lock_seqid(status, res->seqid); 4877 if (status == 0) 4878 status = decode_stateid(xdr, &res->stateid); 4879 return status; 4880 } 4881 4882 static int decode_release_lockowner(struct xdr_stream *xdr) 4883 { 4884 return decode_op_hdr(xdr, OP_RELEASE_LOCKOWNER); 4885 } 4886 4887 static int decode_lookup(struct xdr_stream *xdr) 4888 { 4889 return decode_op_hdr(xdr, OP_LOOKUP); 4890 } 4891 4892 /* This is too sick! */ 4893 static int decode_space_limit(struct xdr_stream *xdr, u64 *maxsize) 4894 { 4895 __be32 *p; 4896 uint32_t limit_type, nblocks, blocksize; 4897 4898 p = xdr_inline_decode(xdr, 12); 4899 if (unlikely(!p)) 4900 goto out_overflow; 4901 limit_type = be32_to_cpup(p++); 4902 switch (limit_type) { 4903 case 1: 4904 xdr_decode_hyper(p, maxsize); 4905 break; 4906 case 2: 4907 nblocks = be32_to_cpup(p++); 4908 blocksize = be32_to_cpup(p); 4909 *maxsize = (uint64_t)nblocks * (uint64_t)blocksize; 4910 } 4911 return 0; 4912 out_overflow: 4913 print_overflow_msg(__func__, xdr); 4914 return -EIO; 4915 } 4916 4917 static int decode_delegation(struct xdr_stream *xdr, struct nfs_openres *res) 4918 { 4919 __be32 *p; 4920 uint32_t delegation_type; 4921 int status; 4922 4923 p = xdr_inline_decode(xdr, 4); 4924 if (unlikely(!p)) 4925 goto out_overflow; 4926 delegation_type = be32_to_cpup(p); 4927 if (delegation_type == NFS4_OPEN_DELEGATE_NONE) { 4928 res->delegation_type = 0; 4929 return 0; 4930 } 4931 status = decode_stateid(xdr, &res->delegation); 4932 if (unlikely(status)) 4933 return status; 4934 p = xdr_inline_decode(xdr, 4); 4935 if (unlikely(!p)) 4936 goto out_overflow; 4937 res->do_recall = be32_to_cpup(p); 4938 4939 switch (delegation_type) { 4940 case NFS4_OPEN_DELEGATE_READ: 4941 res->delegation_type = FMODE_READ; 4942 break; 4943 case NFS4_OPEN_DELEGATE_WRITE: 4944 res->delegation_type = FMODE_WRITE|FMODE_READ; 4945 if (decode_space_limit(xdr, &res->maxsize) < 0) 4946 return -EIO; 4947 } 4948 return decode_ace(xdr, NULL, res->server->nfs_client); 4949 out_overflow: 4950 print_overflow_msg(__func__, xdr); 4951 return -EIO; 4952 } 4953 4954 static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res) 4955 { 4956 __be32 *p; 4957 uint32_t savewords, bmlen, i; 4958 int status; 4959 4960 status = decode_op_hdr(xdr, OP_OPEN); 4961 if (status != -EIO) 4962 nfs_increment_open_seqid(status, res->seqid); 4963 if (!status) 4964 status = decode_stateid(xdr, &res->stateid); 4965 if (unlikely(status)) 4966 return status; 4967 4968 decode_change_info(xdr, &res->cinfo); 4969 4970 p = xdr_inline_decode(xdr, 8); 4971 if (unlikely(!p)) 4972 goto out_overflow; 4973 res->rflags = be32_to_cpup(p++); 4974 bmlen = be32_to_cpup(p); 4975 if (bmlen > 10) 4976 goto xdr_error; 4977 4978 p = xdr_inline_decode(xdr, bmlen << 2); 4979 if (unlikely(!p)) 4980 goto out_overflow; 4981 savewords = min_t(uint32_t, bmlen, NFS4_BITMAP_SIZE); 4982 for (i = 0; i < savewords; ++i) 4983 res->attrset[i] = be32_to_cpup(p++); 4984 for (; i < NFS4_BITMAP_SIZE; i++) 4985 res->attrset[i] = 0; 4986 4987 return decode_delegation(xdr, res); 4988 xdr_error: 4989 dprintk("%s: Bitmap too large! Length = %u\n", __func__, bmlen); 4990 return -EIO; 4991 out_overflow: 4992 print_overflow_msg(__func__, xdr); 4993 return -EIO; 4994 } 4995 4996 static int decode_open_confirm(struct xdr_stream *xdr, struct nfs_open_confirmres *res) 4997 { 4998 int status; 4999 5000 status = decode_op_hdr(xdr, OP_OPEN_CONFIRM); 5001 if (status != -EIO) 5002 nfs_increment_open_seqid(status, res->seqid); 5003 if (!status) 5004 status = decode_stateid(xdr, &res->stateid); 5005 return status; 5006 } 5007 5008 static int decode_open_downgrade(struct xdr_stream *xdr, struct nfs_closeres *res) 5009 { 5010 int status; 5011 5012 status = decode_op_hdr(xdr, OP_OPEN_DOWNGRADE); 5013 if (status != -EIO) 5014 nfs_increment_open_seqid(status, res->seqid); 5015 if (!status) 5016 status = decode_stateid(xdr, &res->stateid); 5017 return status; 5018 } 5019 5020 static int decode_putfh(struct xdr_stream *xdr) 5021 { 5022 return decode_op_hdr(xdr, OP_PUTFH); 5023 } 5024 5025 static int decode_putrootfh(struct xdr_stream *xdr) 5026 { 5027 return decode_op_hdr(xdr, OP_PUTROOTFH); 5028 } 5029 5030 static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs_readres *res) 5031 { 5032 __be32 *p; 5033 uint32_t count, eof, recvd; 5034 int status; 5035 5036 status = decode_op_hdr(xdr, OP_READ); 5037 if (status) 5038 return status; 5039 p = xdr_inline_decode(xdr, 8); 5040 if (unlikely(!p)) 5041 goto out_overflow; 5042 eof = be32_to_cpup(p++); 5043 count = be32_to_cpup(p); 5044 recvd = xdr_read_pages(xdr, count); 5045 if (count > recvd) { 5046 dprintk("NFS: server cheating in read reply: " 5047 "count %u > recvd %u\n", count, recvd); 5048 count = recvd; 5049 eof = 0; 5050 } 5051 res->eof = eof; 5052 res->count = count; 5053 return 0; 5054 out_overflow: 5055 print_overflow_msg(__func__, xdr); 5056 return -EIO; 5057 } 5058 5059 static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs4_readdir_res *readdir) 5060 { 5061 int status; 5062 __be32 verf[2]; 5063 5064 status = decode_op_hdr(xdr, OP_READDIR); 5065 if (!status) 5066 status = decode_verifier(xdr, readdir->verifier.data); 5067 if (unlikely(status)) 5068 return status; 5069 memcpy(verf, readdir->verifier.data, sizeof(verf)); 5070 dprintk("%s: verifier = %08x:%08x\n", 5071 __func__, verf[0], verf[1]); 5072 return xdr_read_pages(xdr, xdr->buf->page_len); 5073 } 5074 5075 static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req) 5076 { 5077 struct xdr_buf *rcvbuf = &req->rq_rcv_buf; 5078 u32 len, recvd; 5079 __be32 *p; 5080 int status; 5081 5082 status = decode_op_hdr(xdr, OP_READLINK); 5083 if (status) 5084 return status; 5085 5086 /* Convert length of symlink */ 5087 p = xdr_inline_decode(xdr, 4); 5088 if (unlikely(!p)) 5089 goto out_overflow; 5090 len = be32_to_cpup(p); 5091 if (len >= rcvbuf->page_len || len <= 0) { 5092 dprintk("nfs: server returned giant symlink!\n"); 5093 return -ENAMETOOLONG; 5094 } 5095 recvd = xdr_read_pages(xdr, len); 5096 if (recvd < len) { 5097 dprintk("NFS: server cheating in readlink reply: " 5098 "count %u > recvd %u\n", len, recvd); 5099 return -EIO; 5100 } 5101 /* 5102 * The XDR encode routine has set things up so that 5103 * the link text will be copied directly into the 5104 * buffer. We just have to do overflow-checking, 5105 * and and null-terminate the text (the VFS expects 5106 * null-termination). 5107 */ 5108 xdr_terminate_string(rcvbuf, len); 5109 return 0; 5110 out_overflow: 5111 print_overflow_msg(__func__, xdr); 5112 return -EIO; 5113 } 5114 5115 static int decode_remove(struct xdr_stream *xdr, struct nfs4_change_info *cinfo) 5116 { 5117 int status; 5118 5119 status = decode_op_hdr(xdr, OP_REMOVE); 5120 if (status) 5121 goto out; 5122 status = decode_change_info(xdr, cinfo); 5123 out: 5124 return status; 5125 } 5126 5127 static int decode_rename(struct xdr_stream *xdr, struct nfs4_change_info *old_cinfo, 5128 struct nfs4_change_info *new_cinfo) 5129 { 5130 int status; 5131 5132 status = decode_op_hdr(xdr, OP_RENAME); 5133 if (status) 5134 goto out; 5135 if ((status = decode_change_info(xdr, old_cinfo))) 5136 goto out; 5137 status = decode_change_info(xdr, new_cinfo); 5138 out: 5139 return status; 5140 } 5141 5142 static int decode_renew(struct xdr_stream *xdr) 5143 { 5144 return decode_op_hdr(xdr, OP_RENEW); 5145 } 5146 5147 static int 5148 decode_restorefh(struct xdr_stream *xdr) 5149 { 5150 return decode_op_hdr(xdr, OP_RESTOREFH); 5151 } 5152 5153 static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req, 5154 struct nfs_getaclres *res) 5155 { 5156 unsigned int savep; 5157 uint32_t attrlen, 5158 bitmap[3] = {0}; 5159 int status; 5160 unsigned int pg_offset; 5161 5162 res->acl_len = 0; 5163 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) 5164 goto out; 5165 5166 xdr_enter_page(xdr, xdr->buf->page_len); 5167 5168 /* Calculate the offset of the page data */ 5169 pg_offset = xdr->buf->head[0].iov_len; 5170 5171 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) 5172 goto out; 5173 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) 5174 goto out; 5175 5176 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACL - 1U))) 5177 return -EIO; 5178 if (likely(bitmap[0] & FATTR4_WORD0_ACL)) { 5179 5180 /* The bitmap (xdr len + bitmaps) and the attr xdr len words 5181 * are stored with the acl data to handle the problem of 5182 * variable length bitmaps.*/ 5183 res->acl_data_offset = xdr_stream_pos(xdr) - pg_offset; 5184 res->acl_len = attrlen; 5185 5186 /* Check for receive buffer overflow */ 5187 if (res->acl_len > (xdr->nwords << 2) || 5188 res->acl_len + res->acl_data_offset > xdr->buf->page_len) { 5189 res->acl_flags |= NFS4_ACL_TRUNC; 5190 dprintk("NFS: acl reply: attrlen %u > page_len %u\n", 5191 attrlen, xdr->nwords << 2); 5192 } 5193 } else 5194 status = -EOPNOTSUPP; 5195 5196 out: 5197 return status; 5198 } 5199 5200 static int 5201 decode_savefh(struct xdr_stream *xdr) 5202 { 5203 return decode_op_hdr(xdr, OP_SAVEFH); 5204 } 5205 5206 static int decode_setattr(struct xdr_stream *xdr) 5207 { 5208 __be32 *p; 5209 uint32_t bmlen; 5210 int status; 5211 5212 status = decode_op_hdr(xdr, OP_SETATTR); 5213 if (status) 5214 return status; 5215 p = xdr_inline_decode(xdr, 4); 5216 if (unlikely(!p)) 5217 goto out_overflow; 5218 bmlen = be32_to_cpup(p); 5219 p = xdr_inline_decode(xdr, bmlen << 2); 5220 if (likely(p)) 5221 return 0; 5222 out_overflow: 5223 print_overflow_msg(__func__, xdr); 5224 return -EIO; 5225 } 5226 5227 static int decode_setclientid(struct xdr_stream *xdr, struct nfs4_setclientid_res *res) 5228 { 5229 __be32 *p; 5230 uint32_t opnum; 5231 int32_t nfserr; 5232 5233 p = xdr_inline_decode(xdr, 8); 5234 if (unlikely(!p)) 5235 goto out_overflow; 5236 opnum = be32_to_cpup(p++); 5237 if (opnum != OP_SETCLIENTID) { 5238 dprintk("nfs: decode_setclientid: Server returned operation" 5239 " %d\n", opnum); 5240 return -EIO; 5241 } 5242 nfserr = be32_to_cpup(p); 5243 if (nfserr == NFS_OK) { 5244 p = xdr_inline_decode(xdr, 8 + NFS4_VERIFIER_SIZE); 5245 if (unlikely(!p)) 5246 goto out_overflow; 5247 p = xdr_decode_hyper(p, &res->clientid); 5248 memcpy(res->confirm.data, p, NFS4_VERIFIER_SIZE); 5249 } else if (nfserr == NFSERR_CLID_INUSE) { 5250 uint32_t len; 5251 5252 /* skip netid string */ 5253 p = xdr_inline_decode(xdr, 4); 5254 if (unlikely(!p)) 5255 goto out_overflow; 5256 len = be32_to_cpup(p); 5257 p = xdr_inline_decode(xdr, len); 5258 if (unlikely(!p)) 5259 goto out_overflow; 5260 5261 /* skip uaddr string */ 5262 p = xdr_inline_decode(xdr, 4); 5263 if (unlikely(!p)) 5264 goto out_overflow; 5265 len = be32_to_cpup(p); 5266 p = xdr_inline_decode(xdr, len); 5267 if (unlikely(!p)) 5268 goto out_overflow; 5269 return -NFSERR_CLID_INUSE; 5270 } else 5271 return nfs4_stat_to_errno(nfserr); 5272 5273 return 0; 5274 out_overflow: 5275 print_overflow_msg(__func__, xdr); 5276 return -EIO; 5277 } 5278 5279 static int decode_setclientid_confirm(struct xdr_stream *xdr) 5280 { 5281 return decode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM); 5282 } 5283 5284 static int decode_write(struct xdr_stream *xdr, struct nfs_writeres *res) 5285 { 5286 __be32 *p; 5287 int status; 5288 5289 status = decode_op_hdr(xdr, OP_WRITE); 5290 if (status) 5291 return status; 5292 5293 p = xdr_inline_decode(xdr, 8); 5294 if (unlikely(!p)) 5295 goto out_overflow; 5296 res->count = be32_to_cpup(p++); 5297 res->verf->committed = be32_to_cpup(p++); 5298 return decode_write_verifier(xdr, &res->verf->verifier); 5299 out_overflow: 5300 print_overflow_msg(__func__, xdr); 5301 return -EIO; 5302 } 5303 5304 static int decode_delegreturn(struct xdr_stream *xdr) 5305 { 5306 return decode_op_hdr(xdr, OP_DELEGRETURN); 5307 } 5308 5309 static int decode_secinfo_gss(struct xdr_stream *xdr, 5310 struct nfs4_secinfo4 *flavor) 5311 { 5312 u32 oid_len; 5313 __be32 *p; 5314 5315 p = xdr_inline_decode(xdr, 4); 5316 if (unlikely(!p)) 5317 goto out_overflow; 5318 oid_len = be32_to_cpup(p); 5319 if (oid_len > GSS_OID_MAX_LEN) 5320 goto out_err; 5321 5322 p = xdr_inline_decode(xdr, oid_len); 5323 if (unlikely(!p)) 5324 goto out_overflow; 5325 memcpy(flavor->flavor_info.oid.data, p, oid_len); 5326 flavor->flavor_info.oid.len = oid_len; 5327 5328 p = xdr_inline_decode(xdr, 8); 5329 if (unlikely(!p)) 5330 goto out_overflow; 5331 flavor->flavor_info.qop = be32_to_cpup(p++); 5332 flavor->flavor_info.service = be32_to_cpup(p); 5333 5334 return 0; 5335 5336 out_overflow: 5337 print_overflow_msg(__func__, xdr); 5338 return -EIO; 5339 out_err: 5340 return -EINVAL; 5341 } 5342 5343 static int decode_secinfo_common(struct xdr_stream *xdr, struct nfs4_secinfo_res *res) 5344 { 5345 struct nfs4_secinfo4 *sec_flavor; 5346 unsigned int i, num_flavors; 5347 int status; 5348 __be32 *p; 5349 5350 p = xdr_inline_decode(xdr, 4); 5351 if (unlikely(!p)) 5352 goto out_overflow; 5353 5354 res->flavors->num_flavors = 0; 5355 num_flavors = be32_to_cpup(p); 5356 5357 for (i = 0; i < num_flavors; i++) { 5358 sec_flavor = &res->flavors->flavors[i]; 5359 if ((char *)&sec_flavor[1] - (char *)res->flavors > PAGE_SIZE) 5360 break; 5361 5362 p = xdr_inline_decode(xdr, 4); 5363 if (unlikely(!p)) 5364 goto out_overflow; 5365 sec_flavor->flavor = be32_to_cpup(p); 5366 5367 if (sec_flavor->flavor == RPC_AUTH_GSS) { 5368 status = decode_secinfo_gss(xdr, sec_flavor); 5369 if (status) 5370 goto out; 5371 } 5372 res->flavors->num_flavors++; 5373 } 5374 5375 status = 0; 5376 out: 5377 return status; 5378 out_overflow: 5379 print_overflow_msg(__func__, xdr); 5380 return -EIO; 5381 } 5382 5383 static int decode_secinfo(struct xdr_stream *xdr, struct nfs4_secinfo_res *res) 5384 { 5385 int status = decode_op_hdr(xdr, OP_SECINFO); 5386 if (status) 5387 return status; 5388 return decode_secinfo_common(xdr, res); 5389 } 5390 5391 #if defined(CONFIG_NFS_V4_1) 5392 static int decode_secinfo_no_name(struct xdr_stream *xdr, struct nfs4_secinfo_res *res) 5393 { 5394 int status = decode_op_hdr(xdr, OP_SECINFO_NO_NAME); 5395 if (status) 5396 return status; 5397 return decode_secinfo_common(xdr, res); 5398 } 5399 5400 static int decode_op_map(struct xdr_stream *xdr, struct nfs4_op_map *op_map) 5401 { 5402 __be32 *p; 5403 uint32_t bitmap_words; 5404 unsigned int i; 5405 5406 p = xdr_inline_decode(xdr, 4); 5407 bitmap_words = be32_to_cpup(p++); 5408 if (bitmap_words > NFS4_OP_MAP_NUM_WORDS) 5409 return -EIO; 5410 p = xdr_inline_decode(xdr, 4 * bitmap_words); 5411 for (i = 0; i < bitmap_words; i++) 5412 op_map->u.words[i] = be32_to_cpup(p++); 5413 5414 return 0; 5415 } 5416 5417 static int decode_exchange_id(struct xdr_stream *xdr, 5418 struct nfs41_exchange_id_res *res) 5419 { 5420 __be32 *p; 5421 uint32_t dummy; 5422 char *dummy_str; 5423 int status; 5424 uint32_t impl_id_count; 5425 5426 status = decode_op_hdr(xdr, OP_EXCHANGE_ID); 5427 if (status) 5428 return status; 5429 5430 p = xdr_inline_decode(xdr, 8); 5431 if (unlikely(!p)) 5432 goto out_overflow; 5433 xdr_decode_hyper(p, &res->clientid); 5434 p = xdr_inline_decode(xdr, 12); 5435 if (unlikely(!p)) 5436 goto out_overflow; 5437 res->seqid = be32_to_cpup(p++); 5438 res->flags = be32_to_cpup(p++); 5439 5440 res->state_protect.how = be32_to_cpup(p); 5441 switch (res->state_protect.how) { 5442 case SP4_NONE: 5443 break; 5444 case SP4_MACH_CRED: 5445 status = decode_op_map(xdr, &res->state_protect.enforce); 5446 if (status) 5447 return status; 5448 status = decode_op_map(xdr, &res->state_protect.allow); 5449 if (status) 5450 return status; 5451 break; 5452 default: 5453 WARN_ON_ONCE(1); 5454 return -EIO; 5455 } 5456 5457 /* server_owner4.so_minor_id */ 5458 p = xdr_inline_decode(xdr, 8); 5459 if (unlikely(!p)) 5460 goto out_overflow; 5461 p = xdr_decode_hyper(p, &res->server_owner->minor_id); 5462 5463 /* server_owner4.so_major_id */ 5464 status = decode_opaque_inline(xdr, &dummy, &dummy_str); 5465 if (unlikely(status)) 5466 return status; 5467 if (unlikely(dummy > NFS4_OPAQUE_LIMIT)) 5468 return -EIO; 5469 memcpy(res->server_owner->major_id, dummy_str, dummy); 5470 res->server_owner->major_id_sz = dummy; 5471 5472 /* server_scope4 */ 5473 status = decode_opaque_inline(xdr, &dummy, &dummy_str); 5474 if (unlikely(status)) 5475 return status; 5476 if (unlikely(dummy > NFS4_OPAQUE_LIMIT)) 5477 return -EIO; 5478 memcpy(res->server_scope->server_scope, dummy_str, dummy); 5479 res->server_scope->server_scope_sz = dummy; 5480 5481 /* Implementation Id */ 5482 p = xdr_inline_decode(xdr, 4); 5483 if (unlikely(!p)) 5484 goto out_overflow; 5485 impl_id_count = be32_to_cpup(p++); 5486 5487 if (impl_id_count) { 5488 /* nii_domain */ 5489 status = decode_opaque_inline(xdr, &dummy, &dummy_str); 5490 if (unlikely(status)) 5491 return status; 5492 if (unlikely(dummy > NFS4_OPAQUE_LIMIT)) 5493 return -EIO; 5494 memcpy(res->impl_id->domain, dummy_str, dummy); 5495 5496 /* nii_name */ 5497 status = decode_opaque_inline(xdr, &dummy, &dummy_str); 5498 if (unlikely(status)) 5499 return status; 5500 if (unlikely(dummy > NFS4_OPAQUE_LIMIT)) 5501 return -EIO; 5502 memcpy(res->impl_id->name, dummy_str, dummy); 5503 5504 /* nii_date */ 5505 p = xdr_inline_decode(xdr, 12); 5506 if (unlikely(!p)) 5507 goto out_overflow; 5508 p = xdr_decode_hyper(p, &res->impl_id->date.seconds); 5509 res->impl_id->date.nseconds = be32_to_cpup(p); 5510 5511 /* if there's more than one entry, ignore the rest */ 5512 } 5513 return 0; 5514 out_overflow: 5515 print_overflow_msg(__func__, xdr); 5516 return -EIO; 5517 } 5518 5519 static int decode_chan_attrs(struct xdr_stream *xdr, 5520 struct nfs4_channel_attrs *attrs) 5521 { 5522 __be32 *p; 5523 u32 nr_attrs, val; 5524 5525 p = xdr_inline_decode(xdr, 28); 5526 if (unlikely(!p)) 5527 goto out_overflow; 5528 val = be32_to_cpup(p++); /* headerpadsz */ 5529 if (val) 5530 return -EINVAL; /* no support for header padding yet */ 5531 attrs->max_rqst_sz = be32_to_cpup(p++); 5532 attrs->max_resp_sz = be32_to_cpup(p++); 5533 attrs->max_resp_sz_cached = be32_to_cpup(p++); 5534 attrs->max_ops = be32_to_cpup(p++); 5535 attrs->max_reqs = be32_to_cpup(p++); 5536 nr_attrs = be32_to_cpup(p); 5537 if (unlikely(nr_attrs > 1)) { 5538 printk(KERN_WARNING "NFS: %s: Invalid rdma channel attrs " 5539 "count %u\n", __func__, nr_attrs); 5540 return -EINVAL; 5541 } 5542 if (nr_attrs == 1) { 5543 p = xdr_inline_decode(xdr, 4); /* skip rdma_attrs */ 5544 if (unlikely(!p)) 5545 goto out_overflow; 5546 } 5547 return 0; 5548 out_overflow: 5549 print_overflow_msg(__func__, xdr); 5550 return -EIO; 5551 } 5552 5553 static int decode_sessionid(struct xdr_stream *xdr, struct nfs4_sessionid *sid) 5554 { 5555 return decode_opaque_fixed(xdr, sid->data, NFS4_MAX_SESSIONID_LEN); 5556 } 5557 5558 static int decode_bind_conn_to_session(struct xdr_stream *xdr, 5559 struct nfs41_bind_conn_to_session_res *res) 5560 { 5561 __be32 *p; 5562 int status; 5563 5564 status = decode_op_hdr(xdr, OP_BIND_CONN_TO_SESSION); 5565 if (!status) 5566 status = decode_sessionid(xdr, &res->session->sess_id); 5567 if (unlikely(status)) 5568 return status; 5569 5570 /* dir flags, rdma mode bool */ 5571 p = xdr_inline_decode(xdr, 8); 5572 if (unlikely(!p)) 5573 goto out_overflow; 5574 5575 res->dir = be32_to_cpup(p++); 5576 if (res->dir == 0 || res->dir > NFS4_CDFS4_BOTH) 5577 return -EIO; 5578 if (be32_to_cpup(p) == 0) 5579 res->use_conn_in_rdma_mode = false; 5580 else 5581 res->use_conn_in_rdma_mode = true; 5582 5583 return 0; 5584 out_overflow: 5585 print_overflow_msg(__func__, xdr); 5586 return -EIO; 5587 } 5588 5589 static int decode_create_session(struct xdr_stream *xdr, 5590 struct nfs41_create_session_res *res) 5591 { 5592 __be32 *p; 5593 int status; 5594 struct nfs_client *clp = res->client; 5595 struct nfs4_session *session = clp->cl_session; 5596 5597 status = decode_op_hdr(xdr, OP_CREATE_SESSION); 5598 if (!status) 5599 status = decode_sessionid(xdr, &session->sess_id); 5600 if (unlikely(status)) 5601 return status; 5602 5603 /* seqid, flags */ 5604 p = xdr_inline_decode(xdr, 8); 5605 if (unlikely(!p)) 5606 goto out_overflow; 5607 clp->cl_seqid = be32_to_cpup(p++); 5608 session->flags = be32_to_cpup(p); 5609 5610 /* Channel attributes */ 5611 status = decode_chan_attrs(xdr, &session->fc_attrs); 5612 if (!status) 5613 status = decode_chan_attrs(xdr, &session->bc_attrs); 5614 return status; 5615 out_overflow: 5616 print_overflow_msg(__func__, xdr); 5617 return -EIO; 5618 } 5619 5620 static int decode_destroy_session(struct xdr_stream *xdr, void *dummy) 5621 { 5622 return decode_op_hdr(xdr, OP_DESTROY_SESSION); 5623 } 5624 5625 static int decode_destroy_clientid(struct xdr_stream *xdr, void *dummy) 5626 { 5627 return decode_op_hdr(xdr, OP_DESTROY_CLIENTID); 5628 } 5629 5630 static int decode_reclaim_complete(struct xdr_stream *xdr, void *dummy) 5631 { 5632 return decode_op_hdr(xdr, OP_RECLAIM_COMPLETE); 5633 } 5634 #endif /* CONFIG_NFS_V4_1 */ 5635 5636 static int decode_sequence(struct xdr_stream *xdr, 5637 struct nfs4_sequence_res *res, 5638 struct rpc_rqst *rqstp) 5639 { 5640 #if defined(CONFIG_NFS_V4_1) 5641 struct nfs4_session *session; 5642 struct nfs4_sessionid id; 5643 u32 dummy; 5644 int status; 5645 __be32 *p; 5646 5647 if (res->sr_slot == NULL) 5648 return 0; 5649 if (!res->sr_slot->table->session) 5650 return 0; 5651 5652 status = decode_op_hdr(xdr, OP_SEQUENCE); 5653 if (!status) 5654 status = decode_sessionid(xdr, &id); 5655 if (unlikely(status)) 5656 goto out_err; 5657 5658 /* 5659 * If the server returns different values for sessionID, slotID or 5660 * sequence number, the server is looney tunes. 5661 */ 5662 status = -EREMOTEIO; 5663 session = res->sr_slot->table->session; 5664 5665 if (memcmp(id.data, session->sess_id.data, 5666 NFS4_MAX_SESSIONID_LEN)) { 5667 dprintk("%s Invalid session id\n", __func__); 5668 goto out_err; 5669 } 5670 5671 p = xdr_inline_decode(xdr, 20); 5672 if (unlikely(!p)) 5673 goto out_overflow; 5674 5675 /* seqid */ 5676 dummy = be32_to_cpup(p++); 5677 if (dummy != res->sr_slot->seq_nr) { 5678 dprintk("%s Invalid sequence number\n", __func__); 5679 goto out_err; 5680 } 5681 /* slot id */ 5682 dummy = be32_to_cpup(p++); 5683 if (dummy != res->sr_slot->slot_nr) { 5684 dprintk("%s Invalid slot id\n", __func__); 5685 goto out_err; 5686 } 5687 /* highest slot id */ 5688 res->sr_highest_slotid = be32_to_cpup(p++); 5689 /* target highest slot id */ 5690 res->sr_target_highest_slotid = be32_to_cpup(p++); 5691 /* result flags */ 5692 res->sr_status_flags = be32_to_cpup(p); 5693 status = 0; 5694 out_err: 5695 res->sr_status = status; 5696 return status; 5697 out_overflow: 5698 print_overflow_msg(__func__, xdr); 5699 status = -EIO; 5700 goto out_err; 5701 #else /* CONFIG_NFS_V4_1 */ 5702 return 0; 5703 #endif /* CONFIG_NFS_V4_1 */ 5704 } 5705 5706 #if defined(CONFIG_NFS_V4_1) 5707 /* 5708 * TODO: Need to handle case when EOF != true; 5709 */ 5710 static int decode_getdevicelist(struct xdr_stream *xdr, 5711 struct pnfs_devicelist *res) 5712 { 5713 __be32 *p; 5714 int status, i; 5715 nfs4_verifier verftemp; 5716 5717 status = decode_op_hdr(xdr, OP_GETDEVICELIST); 5718 if (status) 5719 return status; 5720 5721 p = xdr_inline_decode(xdr, 8 + 8 + 4); 5722 if (unlikely(!p)) 5723 goto out_overflow; 5724 5725 /* TODO: Skip cookie for now */ 5726 p += 2; 5727 5728 /* Read verifier */ 5729 p = xdr_decode_opaque_fixed(p, verftemp.data, NFS4_VERIFIER_SIZE); 5730 5731 res->num_devs = be32_to_cpup(p); 5732 5733 dprintk("%s: num_dev %d\n", __func__, res->num_devs); 5734 5735 if (res->num_devs > NFS4_PNFS_GETDEVLIST_MAXNUM) { 5736 printk(KERN_ERR "NFS: %s too many result dev_num %u\n", 5737 __func__, res->num_devs); 5738 return -EIO; 5739 } 5740 5741 p = xdr_inline_decode(xdr, 5742 res->num_devs * NFS4_DEVICEID4_SIZE + 4); 5743 if (unlikely(!p)) 5744 goto out_overflow; 5745 for (i = 0; i < res->num_devs; i++) 5746 p = xdr_decode_opaque_fixed(p, res->dev_id[i].data, 5747 NFS4_DEVICEID4_SIZE); 5748 res->eof = be32_to_cpup(p); 5749 return 0; 5750 out_overflow: 5751 print_overflow_msg(__func__, xdr); 5752 return -EIO; 5753 } 5754 5755 static int decode_getdeviceinfo(struct xdr_stream *xdr, 5756 struct pnfs_device *pdev) 5757 { 5758 __be32 *p; 5759 uint32_t len, type; 5760 int status; 5761 5762 status = decode_op_hdr(xdr, OP_GETDEVICEINFO); 5763 if (status) { 5764 if (status == -ETOOSMALL) { 5765 p = xdr_inline_decode(xdr, 4); 5766 if (unlikely(!p)) 5767 goto out_overflow; 5768 pdev->mincount = be32_to_cpup(p); 5769 dprintk("%s: Min count too small. mincnt = %u\n", 5770 __func__, pdev->mincount); 5771 } 5772 return status; 5773 } 5774 5775 p = xdr_inline_decode(xdr, 8); 5776 if (unlikely(!p)) 5777 goto out_overflow; 5778 type = be32_to_cpup(p++); 5779 if (type != pdev->layout_type) { 5780 dprintk("%s: layout mismatch req: %u pdev: %u\n", 5781 __func__, pdev->layout_type, type); 5782 return -EINVAL; 5783 } 5784 /* 5785 * Get the length of the opaque device_addr4. xdr_read_pages places 5786 * the opaque device_addr4 in the xdr_buf->pages (pnfs_device->pages) 5787 * and places the remaining xdr data in xdr_buf->tail 5788 */ 5789 pdev->mincount = be32_to_cpup(p); 5790 if (xdr_read_pages(xdr, pdev->mincount) != pdev->mincount) 5791 goto out_overflow; 5792 5793 /* Parse notification bitmap, verifying that it is zero. */ 5794 p = xdr_inline_decode(xdr, 4); 5795 if (unlikely(!p)) 5796 goto out_overflow; 5797 len = be32_to_cpup(p); 5798 if (len) { 5799 uint32_t i; 5800 5801 p = xdr_inline_decode(xdr, 4 * len); 5802 if (unlikely(!p)) 5803 goto out_overflow; 5804 for (i = 0; i < len; i++, p++) { 5805 if (be32_to_cpup(p)) { 5806 dprintk("%s: notifications not supported\n", 5807 __func__); 5808 return -EIO; 5809 } 5810 } 5811 } 5812 return 0; 5813 out_overflow: 5814 print_overflow_msg(__func__, xdr); 5815 return -EIO; 5816 } 5817 5818 static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req, 5819 struct nfs4_layoutget_res *res) 5820 { 5821 __be32 *p; 5822 int status; 5823 u32 layout_count; 5824 u32 recvd; 5825 5826 status = decode_op_hdr(xdr, OP_LAYOUTGET); 5827 if (status) 5828 return status; 5829 p = xdr_inline_decode(xdr, 4); 5830 if (unlikely(!p)) 5831 goto out_overflow; 5832 res->return_on_close = be32_to_cpup(p); 5833 decode_stateid(xdr, &res->stateid); 5834 p = xdr_inline_decode(xdr, 4); 5835 if (unlikely(!p)) 5836 goto out_overflow; 5837 layout_count = be32_to_cpup(p); 5838 if (!layout_count) { 5839 dprintk("%s: server responded with empty layout array\n", 5840 __func__); 5841 return -EINVAL; 5842 } 5843 5844 p = xdr_inline_decode(xdr, 28); 5845 if (unlikely(!p)) 5846 goto out_overflow; 5847 p = xdr_decode_hyper(p, &res->range.offset); 5848 p = xdr_decode_hyper(p, &res->range.length); 5849 res->range.iomode = be32_to_cpup(p++); 5850 res->type = be32_to_cpup(p++); 5851 res->layoutp->len = be32_to_cpup(p); 5852 5853 dprintk("%s roff:%lu rlen:%lu riomode:%d, lo_type:0x%x, lo.len:%d\n", 5854 __func__, 5855 (unsigned long)res->range.offset, 5856 (unsigned long)res->range.length, 5857 res->range.iomode, 5858 res->type, 5859 res->layoutp->len); 5860 5861 recvd = xdr_read_pages(xdr, res->layoutp->len); 5862 if (res->layoutp->len > recvd) { 5863 dprintk("NFS: server cheating in layoutget reply: " 5864 "layout len %u > recvd %u\n", 5865 res->layoutp->len, recvd); 5866 return -EINVAL; 5867 } 5868 5869 if (layout_count > 1) { 5870 /* We only handle a length one array at the moment. Any 5871 * further entries are just ignored. Note that this means 5872 * the client may see a response that is less than the 5873 * minimum it requested. 5874 */ 5875 dprintk("%s: server responded with %d layouts, dropping tail\n", 5876 __func__, layout_count); 5877 } 5878 5879 return 0; 5880 out_overflow: 5881 print_overflow_msg(__func__, xdr); 5882 return -EIO; 5883 } 5884 5885 static int decode_layoutreturn(struct xdr_stream *xdr, 5886 struct nfs4_layoutreturn_res *res) 5887 { 5888 __be32 *p; 5889 int status; 5890 5891 status = decode_op_hdr(xdr, OP_LAYOUTRETURN); 5892 if (status) 5893 return status; 5894 p = xdr_inline_decode(xdr, 4); 5895 if (unlikely(!p)) 5896 goto out_overflow; 5897 res->lrs_present = be32_to_cpup(p); 5898 if (res->lrs_present) 5899 status = decode_stateid(xdr, &res->stateid); 5900 return status; 5901 out_overflow: 5902 print_overflow_msg(__func__, xdr); 5903 return -EIO; 5904 } 5905 5906 static int decode_layoutcommit(struct xdr_stream *xdr, 5907 struct rpc_rqst *req, 5908 struct nfs4_layoutcommit_res *res) 5909 { 5910 __be32 *p; 5911 __u32 sizechanged; 5912 int status; 5913 5914 status = decode_op_hdr(xdr, OP_LAYOUTCOMMIT); 5915 res->status = status; 5916 if (status) 5917 return status; 5918 5919 p = xdr_inline_decode(xdr, 4); 5920 if (unlikely(!p)) 5921 goto out_overflow; 5922 sizechanged = be32_to_cpup(p); 5923 5924 if (sizechanged) { 5925 /* throw away new size */ 5926 p = xdr_inline_decode(xdr, 8); 5927 if (unlikely(!p)) 5928 goto out_overflow; 5929 } 5930 return 0; 5931 out_overflow: 5932 print_overflow_msg(__func__, xdr); 5933 return -EIO; 5934 } 5935 5936 static int decode_test_stateid(struct xdr_stream *xdr, 5937 struct nfs41_test_stateid_res *res) 5938 { 5939 __be32 *p; 5940 int status; 5941 int num_res; 5942 5943 status = decode_op_hdr(xdr, OP_TEST_STATEID); 5944 if (status) 5945 return status; 5946 5947 p = xdr_inline_decode(xdr, 4); 5948 if (unlikely(!p)) 5949 goto out_overflow; 5950 num_res = be32_to_cpup(p++); 5951 if (num_res != 1) 5952 goto out; 5953 5954 p = xdr_inline_decode(xdr, 4); 5955 if (unlikely(!p)) 5956 goto out_overflow; 5957 res->status = be32_to_cpup(p++); 5958 5959 return status; 5960 out_overflow: 5961 print_overflow_msg(__func__, xdr); 5962 out: 5963 return -EIO; 5964 } 5965 5966 static int decode_free_stateid(struct xdr_stream *xdr, 5967 struct nfs41_free_stateid_res *res) 5968 { 5969 __be32 *p; 5970 int status; 5971 5972 status = decode_op_hdr(xdr, OP_FREE_STATEID); 5973 if (status) 5974 return status; 5975 5976 p = xdr_inline_decode(xdr, 4); 5977 if (unlikely(!p)) 5978 goto out_overflow; 5979 res->status = be32_to_cpup(p++); 5980 return res->status; 5981 out_overflow: 5982 print_overflow_msg(__func__, xdr); 5983 return -EIO; 5984 } 5985 #endif /* CONFIG_NFS_V4_1 */ 5986 5987 /* 5988 * END OF "GENERIC" DECODE ROUTINES. 5989 */ 5990 5991 /* 5992 * Decode OPEN_DOWNGRADE response 5993 */ 5994 static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp, 5995 struct xdr_stream *xdr, 5996 struct nfs_closeres *res) 5997 { 5998 struct compound_hdr hdr; 5999 int status; 6000 6001 status = decode_compound_hdr(xdr, &hdr); 6002 if (status) 6003 goto out; 6004 status = decode_sequence(xdr, &res->seq_res, rqstp); 6005 if (status) 6006 goto out; 6007 status = decode_putfh(xdr); 6008 if (status) 6009 goto out; 6010 status = decode_open_downgrade(xdr, res); 6011 if (status != 0) 6012 goto out; 6013 decode_getfattr(xdr, res->fattr, res->server); 6014 out: 6015 return status; 6016 } 6017 6018 /* 6019 * Decode ACCESS response 6020 */ 6021 static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6022 struct nfs4_accessres *res) 6023 { 6024 struct compound_hdr hdr; 6025 int status; 6026 6027 status = decode_compound_hdr(xdr, &hdr); 6028 if (status) 6029 goto out; 6030 status = decode_sequence(xdr, &res->seq_res, rqstp); 6031 if (status) 6032 goto out; 6033 status = decode_putfh(xdr); 6034 if (status != 0) 6035 goto out; 6036 status = decode_access(xdr, &res->supported, &res->access); 6037 if (status != 0) 6038 goto out; 6039 decode_getfattr(xdr, res->fattr, res->server); 6040 out: 6041 return status; 6042 } 6043 6044 /* 6045 * Decode LOOKUP response 6046 */ 6047 static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6048 struct nfs4_lookup_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_lookup(xdr); 6063 if (status) 6064 goto out; 6065 status = decode_getfh(xdr, res->fh); 6066 if (status) 6067 goto out; 6068 status = decode_getfattr_label(xdr, res->fattr, res->label, res->server); 6069 out: 6070 return status; 6071 } 6072 6073 /* 6074 * Decode LOOKUP_ROOT response 6075 */ 6076 static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp, 6077 struct xdr_stream *xdr, 6078 struct nfs4_lookup_res *res) 6079 { 6080 struct compound_hdr hdr; 6081 int status; 6082 6083 status = decode_compound_hdr(xdr, &hdr); 6084 if (status) 6085 goto out; 6086 status = decode_sequence(xdr, &res->seq_res, rqstp); 6087 if (status) 6088 goto out; 6089 status = decode_putrootfh(xdr); 6090 if (status) 6091 goto out; 6092 status = decode_getfh(xdr, res->fh); 6093 if (status == 0) 6094 status = decode_getfattr_label(xdr, res->fattr, 6095 res->label, res->server); 6096 out: 6097 return status; 6098 } 6099 6100 /* 6101 * Decode REMOVE response 6102 */ 6103 static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6104 struct nfs_removeres *res) 6105 { 6106 struct compound_hdr hdr; 6107 int status; 6108 6109 status = decode_compound_hdr(xdr, &hdr); 6110 if (status) 6111 goto out; 6112 status = decode_sequence(xdr, &res->seq_res, rqstp); 6113 if (status) 6114 goto out; 6115 status = decode_putfh(xdr); 6116 if (status) 6117 goto out; 6118 status = decode_remove(xdr, &res->cinfo); 6119 out: 6120 return status; 6121 } 6122 6123 /* 6124 * Decode RENAME response 6125 */ 6126 static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6127 struct nfs_renameres *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_savefh(xdr); 6142 if (status) 6143 goto out; 6144 status = decode_putfh(xdr); 6145 if (status) 6146 goto out; 6147 status = decode_rename(xdr, &res->old_cinfo, &res->new_cinfo); 6148 out: 6149 return status; 6150 } 6151 6152 /* 6153 * Decode LINK response 6154 */ 6155 static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6156 struct nfs4_link_res *res) 6157 { 6158 struct compound_hdr hdr; 6159 int status; 6160 6161 status = decode_compound_hdr(xdr, &hdr); 6162 if (status) 6163 goto out; 6164 status = decode_sequence(xdr, &res->seq_res, rqstp); 6165 if (status) 6166 goto out; 6167 status = decode_putfh(xdr); 6168 if (status) 6169 goto out; 6170 status = decode_savefh(xdr); 6171 if (status) 6172 goto out; 6173 status = decode_putfh(xdr); 6174 if (status) 6175 goto out; 6176 status = decode_link(xdr, &res->cinfo); 6177 if (status) 6178 goto out; 6179 /* 6180 * Note order: OP_LINK leaves the directory as the current 6181 * filehandle. 6182 */ 6183 status = decode_restorefh(xdr); 6184 if (status) 6185 goto out; 6186 decode_getfattr_label(xdr, res->fattr, res->label, res->server); 6187 out: 6188 return status; 6189 } 6190 6191 /* 6192 * Decode CREATE response 6193 */ 6194 static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6195 struct nfs4_create_res *res) 6196 { 6197 struct compound_hdr hdr; 6198 int status; 6199 6200 status = decode_compound_hdr(xdr, &hdr); 6201 if (status) 6202 goto out; 6203 status = decode_sequence(xdr, &res->seq_res, rqstp); 6204 if (status) 6205 goto out; 6206 status = decode_putfh(xdr); 6207 if (status) 6208 goto out; 6209 status = decode_create(xdr, &res->dir_cinfo); 6210 if (status) 6211 goto out; 6212 status = decode_getfh(xdr, res->fh); 6213 if (status) 6214 goto out; 6215 decode_getfattr_label(xdr, res->fattr, res->label, res->server); 6216 out: 6217 return status; 6218 } 6219 6220 /* 6221 * Decode SYMLINK response 6222 */ 6223 static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6224 struct nfs4_create_res *res) 6225 { 6226 return nfs4_xdr_dec_create(rqstp, xdr, res); 6227 } 6228 6229 /* 6230 * Decode GETATTR response 6231 */ 6232 static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6233 struct nfs4_getattr_res *res) 6234 { 6235 struct compound_hdr hdr; 6236 int status; 6237 6238 status = decode_compound_hdr(xdr, &hdr); 6239 if (status) 6240 goto out; 6241 status = decode_sequence(xdr, &res->seq_res, rqstp); 6242 if (status) 6243 goto out; 6244 status = decode_putfh(xdr); 6245 if (status) 6246 goto out; 6247 status = decode_getfattr_label(xdr, res->fattr, res->label, res->server); 6248 out: 6249 return status; 6250 } 6251 6252 /* 6253 * Encode an SETACL request 6254 */ 6255 static void nfs4_xdr_enc_setacl(struct rpc_rqst *req, struct xdr_stream *xdr, 6256 struct nfs_setaclargs *args) 6257 { 6258 struct compound_hdr hdr = { 6259 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 6260 }; 6261 6262 encode_compound_hdr(xdr, req, &hdr); 6263 encode_sequence(xdr, &args->seq_args, &hdr); 6264 encode_putfh(xdr, args->fh, &hdr); 6265 encode_setacl(xdr, args, &hdr); 6266 encode_nops(&hdr); 6267 } 6268 6269 /* 6270 * Decode SETACL response 6271 */ 6272 static int 6273 nfs4_xdr_dec_setacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6274 struct nfs_setaclres *res) 6275 { 6276 struct compound_hdr hdr; 6277 int status; 6278 6279 status = decode_compound_hdr(xdr, &hdr); 6280 if (status) 6281 goto out; 6282 status = decode_sequence(xdr, &res->seq_res, rqstp); 6283 if (status) 6284 goto out; 6285 status = decode_putfh(xdr); 6286 if (status) 6287 goto out; 6288 status = decode_setattr(xdr); 6289 out: 6290 return status; 6291 } 6292 6293 /* 6294 * Decode GETACL response 6295 */ 6296 static int 6297 nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6298 struct nfs_getaclres *res) 6299 { 6300 struct compound_hdr hdr; 6301 int status; 6302 6303 if (res->acl_scratch != NULL) { 6304 void *p = page_address(res->acl_scratch); 6305 xdr_set_scratch_buffer(xdr, p, PAGE_SIZE); 6306 } 6307 status = decode_compound_hdr(xdr, &hdr); 6308 if (status) 6309 goto out; 6310 status = decode_sequence(xdr, &res->seq_res, rqstp); 6311 if (status) 6312 goto out; 6313 status = decode_putfh(xdr); 6314 if (status) 6315 goto out; 6316 status = decode_getacl(xdr, rqstp, res); 6317 6318 out: 6319 return status; 6320 } 6321 6322 /* 6323 * Decode CLOSE response 6324 */ 6325 static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6326 struct nfs_closeres *res) 6327 { 6328 struct compound_hdr hdr; 6329 int status; 6330 6331 status = decode_compound_hdr(xdr, &hdr); 6332 if (status) 6333 goto out; 6334 status = decode_sequence(xdr, &res->seq_res, rqstp); 6335 if (status) 6336 goto out; 6337 status = decode_putfh(xdr); 6338 if (status) 6339 goto out; 6340 status = decode_close(xdr, res); 6341 if (status != 0) 6342 goto out; 6343 /* 6344 * Note: Server may do delete on close for this file 6345 * in which case the getattr call will fail with 6346 * an ESTALE error. Shouldn't be a problem, 6347 * though, since fattr->valid will remain unset. 6348 */ 6349 decode_getfattr(xdr, res->fattr, res->server); 6350 out: 6351 return status; 6352 } 6353 6354 /* 6355 * Decode OPEN response 6356 */ 6357 static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6358 struct nfs_openres *res) 6359 { 6360 struct compound_hdr hdr; 6361 int status; 6362 6363 status = decode_compound_hdr(xdr, &hdr); 6364 if (status) 6365 goto out; 6366 status = decode_sequence(xdr, &res->seq_res, rqstp); 6367 if (status) 6368 goto out; 6369 status = decode_putfh(xdr); 6370 if (status) 6371 goto out; 6372 status = decode_open(xdr, res); 6373 if (status) 6374 goto out; 6375 status = decode_getfh(xdr, &res->fh); 6376 if (status) 6377 goto out; 6378 if (res->access_request) 6379 decode_access(xdr, &res->access_supported, &res->access_result); 6380 decode_getfattr_label(xdr, res->f_attr, res->f_label, res->server); 6381 out: 6382 return status; 6383 } 6384 6385 /* 6386 * Decode OPEN_CONFIRM response 6387 */ 6388 static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp, 6389 struct xdr_stream *xdr, 6390 struct nfs_open_confirmres *res) 6391 { 6392 struct compound_hdr hdr; 6393 int status; 6394 6395 status = decode_compound_hdr(xdr, &hdr); 6396 if (status) 6397 goto out; 6398 status = decode_putfh(xdr); 6399 if (status) 6400 goto out; 6401 status = decode_open_confirm(xdr, res); 6402 out: 6403 return status; 6404 } 6405 6406 /* 6407 * Decode OPEN response 6408 */ 6409 static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp, 6410 struct xdr_stream *xdr, 6411 struct nfs_openres *res) 6412 { 6413 struct compound_hdr hdr; 6414 int status; 6415 6416 status = decode_compound_hdr(xdr, &hdr); 6417 if (status) 6418 goto out; 6419 status = decode_sequence(xdr, &res->seq_res, rqstp); 6420 if (status) 6421 goto out; 6422 status = decode_putfh(xdr); 6423 if (status) 6424 goto out; 6425 status = decode_open(xdr, res); 6426 if (status) 6427 goto out; 6428 if (res->access_request) 6429 decode_access(xdr, &res->access_supported, &res->access_result); 6430 decode_getfattr(xdr, res->f_attr, res->server); 6431 out: 6432 return status; 6433 } 6434 6435 /* 6436 * Decode SETATTR response 6437 */ 6438 static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp, 6439 struct xdr_stream *xdr, 6440 struct nfs_setattrres *res) 6441 { 6442 struct compound_hdr hdr; 6443 int status; 6444 6445 status = decode_compound_hdr(xdr, &hdr); 6446 if (status) 6447 goto out; 6448 status = decode_sequence(xdr, &res->seq_res, rqstp); 6449 if (status) 6450 goto out; 6451 status = decode_putfh(xdr); 6452 if (status) 6453 goto out; 6454 status = decode_setattr(xdr); 6455 if (status) 6456 goto out; 6457 decode_getfattr_label(xdr, res->fattr, res->label, res->server); 6458 out: 6459 return status; 6460 } 6461 6462 /* 6463 * Decode LOCK response 6464 */ 6465 static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6466 struct nfs_lock_res *res) 6467 { 6468 struct compound_hdr hdr; 6469 int status; 6470 6471 status = decode_compound_hdr(xdr, &hdr); 6472 if (status) 6473 goto out; 6474 status = decode_sequence(xdr, &res->seq_res, rqstp); 6475 if (status) 6476 goto out; 6477 status = decode_putfh(xdr); 6478 if (status) 6479 goto out; 6480 status = decode_lock(xdr, res); 6481 out: 6482 return status; 6483 } 6484 6485 /* 6486 * Decode LOCKT response 6487 */ 6488 static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6489 struct nfs_lockt_res *res) 6490 { 6491 struct compound_hdr hdr; 6492 int status; 6493 6494 status = decode_compound_hdr(xdr, &hdr); 6495 if (status) 6496 goto out; 6497 status = decode_sequence(xdr, &res->seq_res, rqstp); 6498 if (status) 6499 goto out; 6500 status = decode_putfh(xdr); 6501 if (status) 6502 goto out; 6503 status = decode_lockt(xdr, res); 6504 out: 6505 return status; 6506 } 6507 6508 /* 6509 * Decode LOCKU response 6510 */ 6511 static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6512 struct nfs_locku_res *res) 6513 { 6514 struct compound_hdr hdr; 6515 int status; 6516 6517 status = decode_compound_hdr(xdr, &hdr); 6518 if (status) 6519 goto out; 6520 status = decode_sequence(xdr, &res->seq_res, rqstp); 6521 if (status) 6522 goto out; 6523 status = decode_putfh(xdr); 6524 if (status) 6525 goto out; 6526 status = decode_locku(xdr, res); 6527 out: 6528 return status; 6529 } 6530 6531 static int nfs4_xdr_dec_release_lockowner(struct rpc_rqst *rqstp, 6532 struct xdr_stream *xdr, void *dummy) 6533 { 6534 struct compound_hdr hdr; 6535 int status; 6536 6537 status = decode_compound_hdr(xdr, &hdr); 6538 if (!status) 6539 status = decode_release_lockowner(xdr); 6540 return status; 6541 } 6542 6543 /* 6544 * Decode READLINK response 6545 */ 6546 static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp, 6547 struct xdr_stream *xdr, 6548 struct nfs4_readlink_res *res) 6549 { 6550 struct compound_hdr hdr; 6551 int status; 6552 6553 status = decode_compound_hdr(xdr, &hdr); 6554 if (status) 6555 goto out; 6556 status = decode_sequence(xdr, &res->seq_res, rqstp); 6557 if (status) 6558 goto out; 6559 status = decode_putfh(xdr); 6560 if (status) 6561 goto out; 6562 status = decode_readlink(xdr, rqstp); 6563 out: 6564 return status; 6565 } 6566 6567 /* 6568 * Decode READDIR response 6569 */ 6570 static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6571 struct nfs4_readdir_res *res) 6572 { 6573 struct compound_hdr hdr; 6574 int status; 6575 6576 status = decode_compound_hdr(xdr, &hdr); 6577 if (status) 6578 goto out; 6579 status = decode_sequence(xdr, &res->seq_res, rqstp); 6580 if (status) 6581 goto out; 6582 status = decode_putfh(xdr); 6583 if (status) 6584 goto out; 6585 status = decode_readdir(xdr, rqstp, res); 6586 out: 6587 return status; 6588 } 6589 6590 /* 6591 * Decode Read response 6592 */ 6593 static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6594 struct nfs_readres *res) 6595 { 6596 struct compound_hdr hdr; 6597 int status; 6598 6599 status = decode_compound_hdr(xdr, &hdr); 6600 if (status) 6601 goto out; 6602 status = decode_sequence(xdr, &res->seq_res, rqstp); 6603 if (status) 6604 goto out; 6605 status = decode_putfh(xdr); 6606 if (status) 6607 goto out; 6608 status = decode_read(xdr, rqstp, res); 6609 if (!status) 6610 status = res->count; 6611 out: 6612 return status; 6613 } 6614 6615 /* 6616 * Decode WRITE response 6617 */ 6618 static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6619 struct nfs_writeres *res) 6620 { 6621 struct compound_hdr hdr; 6622 int status; 6623 6624 status = decode_compound_hdr(xdr, &hdr); 6625 if (status) 6626 goto out; 6627 status = decode_sequence(xdr, &res->seq_res, rqstp); 6628 if (status) 6629 goto out; 6630 status = decode_putfh(xdr); 6631 if (status) 6632 goto out; 6633 status = decode_write(xdr, res); 6634 if (status) 6635 goto out; 6636 if (res->fattr) 6637 decode_getfattr(xdr, res->fattr, res->server); 6638 if (!status) 6639 status = res->count; 6640 out: 6641 return status; 6642 } 6643 6644 /* 6645 * Decode COMMIT response 6646 */ 6647 static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6648 struct nfs_commitres *res) 6649 { 6650 struct compound_hdr hdr; 6651 int status; 6652 6653 status = decode_compound_hdr(xdr, &hdr); 6654 if (status) 6655 goto out; 6656 status = decode_sequence(xdr, &res->seq_res, rqstp); 6657 if (status) 6658 goto out; 6659 status = decode_putfh(xdr); 6660 if (status) 6661 goto out; 6662 status = decode_commit(xdr, res); 6663 out: 6664 return status; 6665 } 6666 6667 /* 6668 * Decode FSINFO response 6669 */ 6670 static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr, 6671 struct nfs4_fsinfo_res *res) 6672 { 6673 struct compound_hdr hdr; 6674 int status; 6675 6676 status = decode_compound_hdr(xdr, &hdr); 6677 if (!status) 6678 status = decode_sequence(xdr, &res->seq_res, req); 6679 if (!status) 6680 status = decode_putfh(xdr); 6681 if (!status) 6682 status = decode_fsinfo(xdr, res->fsinfo); 6683 return status; 6684 } 6685 6686 /* 6687 * Decode PATHCONF response 6688 */ 6689 static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr, 6690 struct nfs4_pathconf_res *res) 6691 { 6692 struct compound_hdr hdr; 6693 int status; 6694 6695 status = decode_compound_hdr(xdr, &hdr); 6696 if (!status) 6697 status = decode_sequence(xdr, &res->seq_res, req); 6698 if (!status) 6699 status = decode_putfh(xdr); 6700 if (!status) 6701 status = decode_pathconf(xdr, res->pathconf); 6702 return status; 6703 } 6704 6705 /* 6706 * Decode STATFS response 6707 */ 6708 static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, struct xdr_stream *xdr, 6709 struct nfs4_statfs_res *res) 6710 { 6711 struct compound_hdr hdr; 6712 int status; 6713 6714 status = decode_compound_hdr(xdr, &hdr); 6715 if (!status) 6716 status = decode_sequence(xdr, &res->seq_res, req); 6717 if (!status) 6718 status = decode_putfh(xdr); 6719 if (!status) 6720 status = decode_statfs(xdr, res->fsstat); 6721 return status; 6722 } 6723 6724 /* 6725 * Decode GETATTR_BITMAP response 6726 */ 6727 static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req, 6728 struct xdr_stream *xdr, 6729 struct nfs4_server_caps_res *res) 6730 { 6731 struct compound_hdr hdr; 6732 int status; 6733 6734 status = decode_compound_hdr(xdr, &hdr); 6735 if (status) 6736 goto out; 6737 status = decode_sequence(xdr, &res->seq_res, req); 6738 if (status) 6739 goto out; 6740 status = decode_putfh(xdr); 6741 if (status) 6742 goto out; 6743 status = decode_server_caps(xdr, res); 6744 out: 6745 return status; 6746 } 6747 6748 /* 6749 * Decode RENEW response 6750 */ 6751 static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6752 void *__unused) 6753 { 6754 struct compound_hdr hdr; 6755 int status; 6756 6757 status = decode_compound_hdr(xdr, &hdr); 6758 if (!status) 6759 status = decode_renew(xdr); 6760 return status; 6761 } 6762 6763 /* 6764 * Decode SETCLIENTID response 6765 */ 6766 static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req, 6767 struct xdr_stream *xdr, 6768 struct nfs4_setclientid_res *res) 6769 { 6770 struct compound_hdr hdr; 6771 int status; 6772 6773 status = decode_compound_hdr(xdr, &hdr); 6774 if (!status) 6775 status = decode_setclientid(xdr, res); 6776 return status; 6777 } 6778 6779 /* 6780 * Decode SETCLIENTID_CONFIRM response 6781 */ 6782 static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req, 6783 struct xdr_stream *xdr) 6784 { 6785 struct compound_hdr hdr; 6786 int status; 6787 6788 status = decode_compound_hdr(xdr, &hdr); 6789 if (!status) 6790 status = decode_setclientid_confirm(xdr); 6791 return status; 6792 } 6793 6794 /* 6795 * Decode DELEGRETURN response 6796 */ 6797 static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp, 6798 struct xdr_stream *xdr, 6799 struct nfs4_delegreturnres *res) 6800 { 6801 struct compound_hdr hdr; 6802 int status; 6803 6804 status = decode_compound_hdr(xdr, &hdr); 6805 if (status) 6806 goto out; 6807 status = decode_sequence(xdr, &res->seq_res, rqstp); 6808 if (status) 6809 goto out; 6810 status = decode_putfh(xdr); 6811 if (status != 0) 6812 goto out; 6813 status = decode_getfattr(xdr, res->fattr, res->server); 6814 if (status != 0) 6815 goto out; 6816 status = decode_delegreturn(xdr); 6817 out: 6818 return status; 6819 } 6820 6821 /* 6822 * Decode FS_LOCATIONS response 6823 */ 6824 static int nfs4_xdr_dec_fs_locations(struct rpc_rqst *req, 6825 struct xdr_stream *xdr, 6826 struct nfs4_fs_locations_res *res) 6827 { 6828 struct compound_hdr hdr; 6829 int status; 6830 6831 status = decode_compound_hdr(xdr, &hdr); 6832 if (status) 6833 goto out; 6834 status = decode_sequence(xdr, &res->seq_res, req); 6835 if (status) 6836 goto out; 6837 status = decode_putfh(xdr); 6838 if (status) 6839 goto out; 6840 status = decode_lookup(xdr); 6841 if (status) 6842 goto out; 6843 xdr_enter_page(xdr, PAGE_SIZE); 6844 status = decode_getfattr_generic(xdr, &res->fs_locations->fattr, 6845 NULL, res->fs_locations, 6846 NULL, res->fs_locations->server); 6847 out: 6848 return status; 6849 } 6850 6851 /* 6852 * Decode SECINFO response 6853 */ 6854 static int nfs4_xdr_dec_secinfo(struct rpc_rqst *rqstp, 6855 struct xdr_stream *xdr, 6856 struct nfs4_secinfo_res *res) 6857 { 6858 struct compound_hdr hdr; 6859 int status; 6860 6861 status = decode_compound_hdr(xdr, &hdr); 6862 if (status) 6863 goto out; 6864 status = decode_sequence(xdr, &res->seq_res, rqstp); 6865 if (status) 6866 goto out; 6867 status = decode_putfh(xdr); 6868 if (status) 6869 goto out; 6870 status = decode_secinfo(xdr, res); 6871 out: 6872 return status; 6873 } 6874 6875 #if defined(CONFIG_NFS_V4_1) 6876 /* 6877 * Decode BIND_CONN_TO_SESSION response 6878 */ 6879 static int nfs4_xdr_dec_bind_conn_to_session(struct rpc_rqst *rqstp, 6880 struct xdr_stream *xdr, 6881 void *res) 6882 { 6883 struct compound_hdr hdr; 6884 int status; 6885 6886 status = decode_compound_hdr(xdr, &hdr); 6887 if (!status) 6888 status = decode_bind_conn_to_session(xdr, res); 6889 return status; 6890 } 6891 6892 /* 6893 * Decode EXCHANGE_ID response 6894 */ 6895 static int nfs4_xdr_dec_exchange_id(struct rpc_rqst *rqstp, 6896 struct xdr_stream *xdr, 6897 void *res) 6898 { 6899 struct compound_hdr hdr; 6900 int status; 6901 6902 status = decode_compound_hdr(xdr, &hdr); 6903 if (!status) 6904 status = decode_exchange_id(xdr, res); 6905 return status; 6906 } 6907 6908 /* 6909 * Decode CREATE_SESSION response 6910 */ 6911 static int nfs4_xdr_dec_create_session(struct rpc_rqst *rqstp, 6912 struct xdr_stream *xdr, 6913 struct nfs41_create_session_res *res) 6914 { 6915 struct compound_hdr hdr; 6916 int status; 6917 6918 status = decode_compound_hdr(xdr, &hdr); 6919 if (!status) 6920 status = decode_create_session(xdr, res); 6921 return status; 6922 } 6923 6924 /* 6925 * Decode DESTROY_SESSION response 6926 */ 6927 static int nfs4_xdr_dec_destroy_session(struct rpc_rqst *rqstp, 6928 struct xdr_stream *xdr, 6929 void *res) 6930 { 6931 struct compound_hdr hdr; 6932 int status; 6933 6934 status = decode_compound_hdr(xdr, &hdr); 6935 if (!status) 6936 status = decode_destroy_session(xdr, res); 6937 return status; 6938 } 6939 6940 /* 6941 * Decode DESTROY_CLIENTID response 6942 */ 6943 static int nfs4_xdr_dec_destroy_clientid(struct rpc_rqst *rqstp, 6944 struct xdr_stream *xdr, 6945 void *res) 6946 { 6947 struct compound_hdr hdr; 6948 int status; 6949 6950 status = decode_compound_hdr(xdr, &hdr); 6951 if (!status) 6952 status = decode_destroy_clientid(xdr, res); 6953 return status; 6954 } 6955 6956 /* 6957 * Decode SEQUENCE response 6958 */ 6959 static int nfs4_xdr_dec_sequence(struct rpc_rqst *rqstp, 6960 struct xdr_stream *xdr, 6961 struct nfs4_sequence_res *res) 6962 { 6963 struct compound_hdr hdr; 6964 int status; 6965 6966 status = decode_compound_hdr(xdr, &hdr); 6967 if (!status) 6968 status = decode_sequence(xdr, res, rqstp); 6969 return status; 6970 } 6971 6972 /* 6973 * Decode GET_LEASE_TIME response 6974 */ 6975 static int nfs4_xdr_dec_get_lease_time(struct rpc_rqst *rqstp, 6976 struct xdr_stream *xdr, 6977 struct nfs4_get_lease_time_res *res) 6978 { 6979 struct compound_hdr hdr; 6980 int status; 6981 6982 status = decode_compound_hdr(xdr, &hdr); 6983 if (!status) 6984 status = decode_sequence(xdr, &res->lr_seq_res, rqstp); 6985 if (!status) 6986 status = decode_putrootfh(xdr); 6987 if (!status) 6988 status = decode_fsinfo(xdr, res->lr_fsinfo); 6989 return status; 6990 } 6991 6992 /* 6993 * Decode RECLAIM_COMPLETE response 6994 */ 6995 static int nfs4_xdr_dec_reclaim_complete(struct rpc_rqst *rqstp, 6996 struct xdr_stream *xdr, 6997 struct nfs41_reclaim_complete_res *res) 6998 { 6999 struct compound_hdr hdr; 7000 int status; 7001 7002 status = decode_compound_hdr(xdr, &hdr); 7003 if (!status) 7004 status = decode_sequence(xdr, &res->seq_res, rqstp); 7005 if (!status) 7006 status = decode_reclaim_complete(xdr, (void *)NULL); 7007 return status; 7008 } 7009 7010 /* 7011 * Decode GETDEVICELIST response 7012 */ 7013 static int nfs4_xdr_dec_getdevicelist(struct rpc_rqst *rqstp, 7014 struct xdr_stream *xdr, 7015 struct nfs4_getdevicelist_res *res) 7016 { 7017 struct compound_hdr hdr; 7018 int status; 7019 7020 dprintk("encoding getdevicelist!\n"); 7021 7022 status = decode_compound_hdr(xdr, &hdr); 7023 if (status != 0) 7024 goto out; 7025 status = decode_sequence(xdr, &res->seq_res, rqstp); 7026 if (status != 0) 7027 goto out; 7028 status = decode_putfh(xdr); 7029 if (status != 0) 7030 goto out; 7031 status = decode_getdevicelist(xdr, res->devlist); 7032 out: 7033 return status; 7034 } 7035 7036 /* 7037 * Decode GETDEVINFO response 7038 */ 7039 static int nfs4_xdr_dec_getdeviceinfo(struct rpc_rqst *rqstp, 7040 struct xdr_stream *xdr, 7041 struct nfs4_getdeviceinfo_res *res) 7042 { 7043 struct compound_hdr hdr; 7044 int status; 7045 7046 status = decode_compound_hdr(xdr, &hdr); 7047 if (status != 0) 7048 goto out; 7049 status = decode_sequence(xdr, &res->seq_res, rqstp); 7050 if (status != 0) 7051 goto out; 7052 status = decode_getdeviceinfo(xdr, res->pdev); 7053 out: 7054 return status; 7055 } 7056 7057 /* 7058 * Decode LAYOUTGET response 7059 */ 7060 static int nfs4_xdr_dec_layoutget(struct rpc_rqst *rqstp, 7061 struct xdr_stream *xdr, 7062 struct nfs4_layoutget_res *res) 7063 { 7064 struct compound_hdr hdr; 7065 int status; 7066 7067 status = decode_compound_hdr(xdr, &hdr); 7068 if (status) 7069 goto out; 7070 status = decode_sequence(xdr, &res->seq_res, rqstp); 7071 if (status) 7072 goto out; 7073 status = decode_putfh(xdr); 7074 if (status) 7075 goto out; 7076 status = decode_layoutget(xdr, rqstp, res); 7077 out: 7078 return status; 7079 } 7080 7081 /* 7082 * Decode LAYOUTRETURN response 7083 */ 7084 static int nfs4_xdr_dec_layoutreturn(struct rpc_rqst *rqstp, 7085 struct xdr_stream *xdr, 7086 struct nfs4_layoutreturn_res *res) 7087 { 7088 struct compound_hdr hdr; 7089 int status; 7090 7091 status = decode_compound_hdr(xdr, &hdr); 7092 if (status) 7093 goto out; 7094 status = decode_sequence(xdr, &res->seq_res, rqstp); 7095 if (status) 7096 goto out; 7097 status = decode_putfh(xdr); 7098 if (status) 7099 goto out; 7100 status = decode_layoutreturn(xdr, res); 7101 out: 7102 return status; 7103 } 7104 7105 /* 7106 * Decode LAYOUTCOMMIT response 7107 */ 7108 static int nfs4_xdr_dec_layoutcommit(struct rpc_rqst *rqstp, 7109 struct xdr_stream *xdr, 7110 struct nfs4_layoutcommit_res *res) 7111 { 7112 struct compound_hdr hdr; 7113 int status; 7114 7115 status = decode_compound_hdr(xdr, &hdr); 7116 if (status) 7117 goto out; 7118 status = decode_sequence(xdr, &res->seq_res, rqstp); 7119 if (status) 7120 goto out; 7121 status = decode_putfh(xdr); 7122 if (status) 7123 goto out; 7124 status = decode_layoutcommit(xdr, rqstp, res); 7125 if (status) 7126 goto out; 7127 decode_getfattr(xdr, res->fattr, res->server); 7128 out: 7129 return status; 7130 } 7131 7132 /* 7133 * Decode SECINFO_NO_NAME response 7134 */ 7135 static int nfs4_xdr_dec_secinfo_no_name(struct rpc_rqst *rqstp, 7136 struct xdr_stream *xdr, 7137 struct nfs4_secinfo_res *res) 7138 { 7139 struct compound_hdr hdr; 7140 int status; 7141 7142 status = decode_compound_hdr(xdr, &hdr); 7143 if (status) 7144 goto out; 7145 status = decode_sequence(xdr, &res->seq_res, rqstp); 7146 if (status) 7147 goto out; 7148 status = decode_putrootfh(xdr); 7149 if (status) 7150 goto out; 7151 status = decode_secinfo_no_name(xdr, res); 7152 out: 7153 return status; 7154 } 7155 7156 /* 7157 * Decode TEST_STATEID response 7158 */ 7159 static int nfs4_xdr_dec_test_stateid(struct rpc_rqst *rqstp, 7160 struct xdr_stream *xdr, 7161 struct nfs41_test_stateid_res *res) 7162 { 7163 struct compound_hdr hdr; 7164 int status; 7165 7166 status = decode_compound_hdr(xdr, &hdr); 7167 if (status) 7168 goto out; 7169 status = decode_sequence(xdr, &res->seq_res, rqstp); 7170 if (status) 7171 goto out; 7172 status = decode_test_stateid(xdr, res); 7173 out: 7174 return status; 7175 } 7176 7177 /* 7178 * Decode FREE_STATEID response 7179 */ 7180 static int nfs4_xdr_dec_free_stateid(struct rpc_rqst *rqstp, 7181 struct xdr_stream *xdr, 7182 struct nfs41_free_stateid_res *res) 7183 { 7184 struct compound_hdr hdr; 7185 int status; 7186 7187 status = decode_compound_hdr(xdr, &hdr); 7188 if (status) 7189 goto out; 7190 status = decode_sequence(xdr, &res->seq_res, rqstp); 7191 if (status) 7192 goto out; 7193 status = decode_free_stateid(xdr, res); 7194 out: 7195 return status; 7196 } 7197 #endif /* CONFIG_NFS_V4_1 */ 7198 7199 /** 7200 * nfs4_decode_dirent - Decode a single NFSv4 directory entry stored in 7201 * the local page cache. 7202 * @xdr: XDR stream where entry resides 7203 * @entry: buffer to fill in with entry data 7204 * @plus: boolean indicating whether this should be a readdirplus entry 7205 * 7206 * Returns zero if successful, otherwise a negative errno value is 7207 * returned. 7208 * 7209 * This function is not invoked during READDIR reply decoding, but 7210 * rather whenever an application invokes the getdents(2) system call 7211 * on a directory already in our cache. 7212 */ 7213 int nfs4_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry, 7214 int plus) 7215 { 7216 unsigned int savep; 7217 uint32_t bitmap[3] = {0}; 7218 uint32_t len; 7219 __be32 *p = xdr_inline_decode(xdr, 4); 7220 if (unlikely(!p)) 7221 goto out_overflow; 7222 if (*p == xdr_zero) { 7223 p = xdr_inline_decode(xdr, 4); 7224 if (unlikely(!p)) 7225 goto out_overflow; 7226 if (*p == xdr_zero) 7227 return -EAGAIN; 7228 entry->eof = 1; 7229 return -EBADCOOKIE; 7230 } 7231 7232 p = xdr_inline_decode(xdr, 12); 7233 if (unlikely(!p)) 7234 goto out_overflow; 7235 entry->prev_cookie = entry->cookie; 7236 p = xdr_decode_hyper(p, &entry->cookie); 7237 entry->len = be32_to_cpup(p); 7238 7239 p = xdr_inline_decode(xdr, entry->len); 7240 if (unlikely(!p)) 7241 goto out_overflow; 7242 entry->name = (const char *) p; 7243 7244 /* 7245 * In case the server doesn't return an inode number, 7246 * we fake one here. (We don't use inode number 0, 7247 * since glibc seems to choke on it...) 7248 */ 7249 entry->ino = 1; 7250 entry->fattr->valid = 0; 7251 7252 if (decode_attr_bitmap(xdr, bitmap) < 0) 7253 goto out_overflow; 7254 7255 if (decode_attr_length(xdr, &len, &savep) < 0) 7256 goto out_overflow; 7257 7258 if (decode_getfattr_attrs(xdr, bitmap, entry->fattr, entry->fh, 7259 NULL, entry->label, entry->server) < 0) 7260 goto out_overflow; 7261 if (entry->fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID) 7262 entry->ino = entry->fattr->mounted_on_fileid; 7263 else if (entry->fattr->valid & NFS_ATTR_FATTR_FILEID) 7264 entry->ino = entry->fattr->fileid; 7265 7266 entry->d_type = DT_UNKNOWN; 7267 if (entry->fattr->valid & NFS_ATTR_FATTR_TYPE) 7268 entry->d_type = nfs_umode_to_dtype(entry->fattr->mode); 7269 7270 return 0; 7271 7272 out_overflow: 7273 print_overflow_msg(__func__, xdr); 7274 return -EAGAIN; 7275 } 7276 7277 /* 7278 * We need to translate between nfs status return values and 7279 * the local errno values which may not be the same. 7280 */ 7281 static struct { 7282 int stat; 7283 int errno; 7284 } nfs_errtbl[] = { 7285 { NFS4_OK, 0 }, 7286 { NFS4ERR_PERM, -EPERM }, 7287 { NFS4ERR_NOENT, -ENOENT }, 7288 { NFS4ERR_IO, -errno_NFSERR_IO}, 7289 { NFS4ERR_NXIO, -ENXIO }, 7290 { NFS4ERR_ACCESS, -EACCES }, 7291 { NFS4ERR_EXIST, -EEXIST }, 7292 { NFS4ERR_XDEV, -EXDEV }, 7293 { NFS4ERR_NOTDIR, -ENOTDIR }, 7294 { NFS4ERR_ISDIR, -EISDIR }, 7295 { NFS4ERR_INVAL, -EINVAL }, 7296 { NFS4ERR_FBIG, -EFBIG }, 7297 { NFS4ERR_NOSPC, -ENOSPC }, 7298 { NFS4ERR_ROFS, -EROFS }, 7299 { NFS4ERR_MLINK, -EMLINK }, 7300 { NFS4ERR_NAMETOOLONG, -ENAMETOOLONG }, 7301 { NFS4ERR_NOTEMPTY, -ENOTEMPTY }, 7302 { NFS4ERR_DQUOT, -EDQUOT }, 7303 { NFS4ERR_STALE, -ESTALE }, 7304 { NFS4ERR_BADHANDLE, -EBADHANDLE }, 7305 { NFS4ERR_BAD_COOKIE, -EBADCOOKIE }, 7306 { NFS4ERR_NOTSUPP, -ENOTSUPP }, 7307 { NFS4ERR_TOOSMALL, -ETOOSMALL }, 7308 { NFS4ERR_SERVERFAULT, -EREMOTEIO }, 7309 { NFS4ERR_BADTYPE, -EBADTYPE }, 7310 { NFS4ERR_LOCKED, -EAGAIN }, 7311 { NFS4ERR_SYMLINK, -ELOOP }, 7312 { NFS4ERR_OP_ILLEGAL, -EOPNOTSUPP }, 7313 { NFS4ERR_DEADLOCK, -EDEADLK }, 7314 { -1, -EIO } 7315 }; 7316 7317 /* 7318 * Convert an NFS error code to a local one. 7319 * This one is used jointly by NFSv2 and NFSv3. 7320 */ 7321 static int 7322 nfs4_stat_to_errno(int stat) 7323 { 7324 int i; 7325 for (i = 0; nfs_errtbl[i].stat != -1; i++) { 7326 if (nfs_errtbl[i].stat == stat) 7327 return nfs_errtbl[i].errno; 7328 } 7329 if (stat <= 10000 || stat > 10100) { 7330 /* The server is looney tunes. */ 7331 return -EREMOTEIO; 7332 } 7333 /* If we cannot translate the error, the recovery routines should 7334 * handle it. 7335 * Note: remaining NFSv4 error codes have values > 10000, so should 7336 * not conflict with native Linux error codes. 7337 */ 7338 return -stat; 7339 } 7340 7341 #define PROC(proc, argtype, restype) \ 7342 [NFSPROC4_CLNT_##proc] = { \ 7343 .p_proc = NFSPROC4_COMPOUND, \ 7344 .p_encode = (kxdreproc_t)nfs4_xdr_##argtype, \ 7345 .p_decode = (kxdrdproc_t)nfs4_xdr_##restype, \ 7346 .p_arglen = NFS4_##argtype##_sz, \ 7347 .p_replen = NFS4_##restype##_sz, \ 7348 .p_statidx = NFSPROC4_CLNT_##proc, \ 7349 .p_name = #proc, \ 7350 } 7351 7352 struct rpc_procinfo nfs4_procedures[] = { 7353 PROC(READ, enc_read, dec_read), 7354 PROC(WRITE, enc_write, dec_write), 7355 PROC(COMMIT, enc_commit, dec_commit), 7356 PROC(OPEN, enc_open, dec_open), 7357 PROC(OPEN_CONFIRM, enc_open_confirm, dec_open_confirm), 7358 PROC(OPEN_NOATTR, enc_open_noattr, dec_open_noattr), 7359 PROC(OPEN_DOWNGRADE, enc_open_downgrade, dec_open_downgrade), 7360 PROC(CLOSE, enc_close, dec_close), 7361 PROC(SETATTR, enc_setattr, dec_setattr), 7362 PROC(FSINFO, enc_fsinfo, dec_fsinfo), 7363 PROC(RENEW, enc_renew, dec_renew), 7364 PROC(SETCLIENTID, enc_setclientid, dec_setclientid), 7365 PROC(SETCLIENTID_CONFIRM, enc_setclientid_confirm, dec_setclientid_confirm), 7366 PROC(LOCK, enc_lock, dec_lock), 7367 PROC(LOCKT, enc_lockt, dec_lockt), 7368 PROC(LOCKU, enc_locku, dec_locku), 7369 PROC(ACCESS, enc_access, dec_access), 7370 PROC(GETATTR, enc_getattr, dec_getattr), 7371 PROC(LOOKUP, enc_lookup, dec_lookup), 7372 PROC(LOOKUP_ROOT, enc_lookup_root, dec_lookup_root), 7373 PROC(REMOVE, enc_remove, dec_remove), 7374 PROC(RENAME, enc_rename, dec_rename), 7375 PROC(LINK, enc_link, dec_link), 7376 PROC(SYMLINK, enc_symlink, dec_symlink), 7377 PROC(CREATE, enc_create, dec_create), 7378 PROC(PATHCONF, enc_pathconf, dec_pathconf), 7379 PROC(STATFS, enc_statfs, dec_statfs), 7380 PROC(READLINK, enc_readlink, dec_readlink), 7381 PROC(READDIR, enc_readdir, dec_readdir), 7382 PROC(SERVER_CAPS, enc_server_caps, dec_server_caps), 7383 PROC(DELEGRETURN, enc_delegreturn, dec_delegreturn), 7384 PROC(GETACL, enc_getacl, dec_getacl), 7385 PROC(SETACL, enc_setacl, dec_setacl), 7386 PROC(FS_LOCATIONS, enc_fs_locations, dec_fs_locations), 7387 PROC(RELEASE_LOCKOWNER, enc_release_lockowner, dec_release_lockowner), 7388 PROC(SECINFO, enc_secinfo, dec_secinfo), 7389 #if defined(CONFIG_NFS_V4_1) 7390 PROC(EXCHANGE_ID, enc_exchange_id, dec_exchange_id), 7391 PROC(CREATE_SESSION, enc_create_session, dec_create_session), 7392 PROC(DESTROY_SESSION, enc_destroy_session, dec_destroy_session), 7393 PROC(SEQUENCE, enc_sequence, dec_sequence), 7394 PROC(GET_LEASE_TIME, enc_get_lease_time, dec_get_lease_time), 7395 PROC(RECLAIM_COMPLETE, enc_reclaim_complete, dec_reclaim_complete), 7396 PROC(GETDEVICEINFO, enc_getdeviceinfo, dec_getdeviceinfo), 7397 PROC(LAYOUTGET, enc_layoutget, dec_layoutget), 7398 PROC(LAYOUTCOMMIT, enc_layoutcommit, dec_layoutcommit), 7399 PROC(LAYOUTRETURN, enc_layoutreturn, dec_layoutreturn), 7400 PROC(SECINFO_NO_NAME, enc_secinfo_no_name, dec_secinfo_no_name), 7401 PROC(TEST_STATEID, enc_test_stateid, dec_test_stateid), 7402 PROC(FREE_STATEID, enc_free_stateid, dec_free_stateid), 7403 PROC(GETDEVICELIST, enc_getdevicelist, dec_getdevicelist), 7404 PROC(BIND_CONN_TO_SESSION, 7405 enc_bind_conn_to_session, dec_bind_conn_to_session), 7406 PROC(DESTROY_CLIENTID, enc_destroy_clientid, dec_destroy_clientid), 7407 #endif /* CONFIG_NFS_V4_1 */ 7408 }; 7409 7410 const struct rpc_version nfs_version4 = { 7411 .number = 4, 7412 .nrprocs = ARRAY_SIZE(nfs4_procedures), 7413 .procs = nfs4_procedures 7414 }; 7415 7416 /* 7417 * Local variables: 7418 * c-basic-offset: 8 7419 * End: 7420 */ 7421