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/sunrpc/clnt.h> 48 #include <linux/sunrpc/msg_prot.h> 49 #include <linux/sunrpc/gss_api.h> 50 #include <linux/nfs.h> 51 #include <linux/nfs4.h> 52 #include <linux/nfs_fs.h> 53 #include <linux/nfs_idmap.h> 54 #include "nfs4_fs.h" 55 #include "internal.h" 56 #include "pnfs.h" 57 58 #define NFSDBG_FACILITY NFSDBG_XDR 59 60 /* Mapping from NFS error code to "errno" error code. */ 61 #define errno_NFSERR_IO EIO 62 63 static int nfs4_stat_to_errno(int); 64 65 /* NFSv4 COMPOUND tags are only wanted for debugging purposes */ 66 #ifdef DEBUG 67 #define NFS4_MAXTAGLEN 20 68 #else 69 #define NFS4_MAXTAGLEN 0 70 #endif 71 72 /* lock,open owner id: 73 * we currently use size 2 (u64) out of (NFS4_OPAQUE_LIMIT >> 2) 74 */ 75 #define open_owner_id_maxsz (1 + 1 + 4) 76 #define lock_owner_id_maxsz (1 + 1 + 4) 77 #define decode_lockowner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ)) 78 #define compound_encode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2)) 79 #define compound_decode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2)) 80 #define op_encode_hdr_maxsz (1) 81 #define op_decode_hdr_maxsz (2) 82 #define encode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE)) 83 #define decode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE)) 84 #define encode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE)) 85 #define decode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE)) 86 #define encode_putfh_maxsz (op_encode_hdr_maxsz + 1 + \ 87 (NFS4_FHSIZE >> 2)) 88 #define decode_putfh_maxsz (op_decode_hdr_maxsz) 89 #define encode_putrootfh_maxsz (op_encode_hdr_maxsz) 90 #define decode_putrootfh_maxsz (op_decode_hdr_maxsz) 91 #define encode_getfh_maxsz (op_encode_hdr_maxsz) 92 #define decode_getfh_maxsz (op_decode_hdr_maxsz + 1 + \ 93 ((3+NFS4_FHSIZE) >> 2)) 94 #define nfs4_fattr_bitmap_maxsz 4 95 #define encode_getattr_maxsz (op_encode_hdr_maxsz + nfs4_fattr_bitmap_maxsz) 96 #define nfs4_name_maxsz (1 + ((3 + NFS4_MAXNAMLEN) >> 2)) 97 #define nfs4_path_maxsz (1 + ((3 + NFS4_MAXPATHLEN) >> 2)) 98 #define nfs4_owner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ)) 99 #define nfs4_group_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ)) 100 /* This is based on getfattr, which uses the most attributes: */ 101 #define nfs4_fattr_value_maxsz (1 + (1 + 2 + 2 + 4 + 2 + 1 + 1 + 2 + 2 + \ 102 3 + 3 + 3 + nfs4_owner_maxsz + nfs4_group_maxsz)) 103 #define nfs4_fattr_maxsz (nfs4_fattr_bitmap_maxsz + \ 104 nfs4_fattr_value_maxsz) 105 #define decode_getattr_maxsz (op_decode_hdr_maxsz + nfs4_fattr_maxsz) 106 #define encode_attrs_maxsz (nfs4_fattr_bitmap_maxsz + \ 107 1 + 2 + 1 + \ 108 nfs4_owner_maxsz + \ 109 nfs4_group_maxsz + \ 110 4 + 4) 111 #define encode_savefh_maxsz (op_encode_hdr_maxsz) 112 #define decode_savefh_maxsz (op_decode_hdr_maxsz) 113 #define encode_restorefh_maxsz (op_encode_hdr_maxsz) 114 #define decode_restorefh_maxsz (op_decode_hdr_maxsz) 115 #define encode_fsinfo_maxsz (encode_getattr_maxsz) 116 /* The 5 accounts for the PNFS attributes, and assumes that at most three 117 * layout types will be returned. 118 */ 119 #define decode_fsinfo_maxsz (op_decode_hdr_maxsz + \ 120 nfs4_fattr_bitmap_maxsz + 4 + 8 + 5) 121 #define encode_renew_maxsz (op_encode_hdr_maxsz + 3) 122 #define decode_renew_maxsz (op_decode_hdr_maxsz) 123 #define encode_setclientid_maxsz \ 124 (op_encode_hdr_maxsz + \ 125 XDR_QUADLEN(NFS4_VERIFIER_SIZE) + \ 126 XDR_QUADLEN(NFS4_SETCLIENTID_NAMELEN) + \ 127 1 /* sc_prog */ + \ 128 XDR_QUADLEN(RPCBIND_MAXNETIDLEN) + \ 129 XDR_QUADLEN(RPCBIND_MAXUADDRLEN) + \ 130 1) /* sc_cb_ident */ 131 #define decode_setclientid_maxsz \ 132 (op_decode_hdr_maxsz + \ 133 2 + \ 134 1024) /* large value for CLID_INUSE */ 135 #define encode_setclientid_confirm_maxsz \ 136 (op_encode_hdr_maxsz + \ 137 3 + (NFS4_VERIFIER_SIZE >> 2)) 138 #define decode_setclientid_confirm_maxsz \ 139 (op_decode_hdr_maxsz) 140 #define encode_lookup_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz) 141 #define decode_lookup_maxsz (op_decode_hdr_maxsz) 142 #define encode_share_access_maxsz \ 143 (2) 144 #define encode_createmode_maxsz (1 + encode_attrs_maxsz + encode_verifier_maxsz) 145 #define encode_opentype_maxsz (1 + encode_createmode_maxsz) 146 #define encode_claim_null_maxsz (1 + nfs4_name_maxsz) 147 #define encode_open_maxsz (op_encode_hdr_maxsz + \ 148 2 + encode_share_access_maxsz + 2 + \ 149 open_owner_id_maxsz + \ 150 encode_opentype_maxsz + \ 151 encode_claim_null_maxsz) 152 #define decode_ace_maxsz (3 + nfs4_owner_maxsz) 153 #define decode_delegation_maxsz (1 + decode_stateid_maxsz + 1 + \ 154 decode_ace_maxsz) 155 #define decode_change_info_maxsz (5) 156 #define decode_open_maxsz (op_decode_hdr_maxsz + \ 157 decode_stateid_maxsz + \ 158 decode_change_info_maxsz + 1 + \ 159 nfs4_fattr_bitmap_maxsz + \ 160 decode_delegation_maxsz) 161 #define encode_open_confirm_maxsz \ 162 (op_encode_hdr_maxsz + \ 163 encode_stateid_maxsz + 1) 164 #define decode_open_confirm_maxsz \ 165 (op_decode_hdr_maxsz + \ 166 decode_stateid_maxsz) 167 #define encode_open_downgrade_maxsz \ 168 (op_encode_hdr_maxsz + \ 169 encode_stateid_maxsz + 1 + \ 170 encode_share_access_maxsz) 171 #define decode_open_downgrade_maxsz \ 172 (op_decode_hdr_maxsz + \ 173 decode_stateid_maxsz) 174 #define encode_close_maxsz (op_encode_hdr_maxsz + \ 175 1 + encode_stateid_maxsz) 176 #define decode_close_maxsz (op_decode_hdr_maxsz + \ 177 decode_stateid_maxsz) 178 #define encode_setattr_maxsz (op_encode_hdr_maxsz + \ 179 encode_stateid_maxsz + \ 180 encode_attrs_maxsz) 181 #define decode_setattr_maxsz (op_decode_hdr_maxsz + \ 182 nfs4_fattr_bitmap_maxsz) 183 #define encode_read_maxsz (op_encode_hdr_maxsz + \ 184 encode_stateid_maxsz + 3) 185 #define decode_read_maxsz (op_decode_hdr_maxsz + 2) 186 #define encode_readdir_maxsz (op_encode_hdr_maxsz + \ 187 2 + encode_verifier_maxsz + 5) 188 #define decode_readdir_maxsz (op_decode_hdr_maxsz + \ 189 decode_verifier_maxsz) 190 #define encode_readlink_maxsz (op_encode_hdr_maxsz) 191 #define decode_readlink_maxsz (op_decode_hdr_maxsz + 1) 192 #define encode_write_maxsz (op_encode_hdr_maxsz + \ 193 encode_stateid_maxsz + 4) 194 #define decode_write_maxsz (op_decode_hdr_maxsz + \ 195 2 + decode_verifier_maxsz) 196 #define encode_commit_maxsz (op_encode_hdr_maxsz + 3) 197 #define decode_commit_maxsz (op_decode_hdr_maxsz + \ 198 decode_verifier_maxsz) 199 #define encode_remove_maxsz (op_encode_hdr_maxsz + \ 200 nfs4_name_maxsz) 201 #define decode_remove_maxsz (op_decode_hdr_maxsz + \ 202 decode_change_info_maxsz) 203 #define encode_rename_maxsz (op_encode_hdr_maxsz + \ 204 2 * nfs4_name_maxsz) 205 #define decode_rename_maxsz (op_decode_hdr_maxsz + \ 206 decode_change_info_maxsz + \ 207 decode_change_info_maxsz) 208 #define encode_link_maxsz (op_encode_hdr_maxsz + \ 209 nfs4_name_maxsz) 210 #define decode_link_maxsz (op_decode_hdr_maxsz + decode_change_info_maxsz) 211 #define encode_lockowner_maxsz (7) 212 #define encode_lock_maxsz (op_encode_hdr_maxsz + \ 213 7 + \ 214 1 + encode_stateid_maxsz + 1 + \ 215 encode_lockowner_maxsz) 216 #define decode_lock_denied_maxsz \ 217 (8 + decode_lockowner_maxsz) 218 #define decode_lock_maxsz (op_decode_hdr_maxsz + \ 219 decode_lock_denied_maxsz) 220 #define encode_lockt_maxsz (op_encode_hdr_maxsz + 5 + \ 221 encode_lockowner_maxsz) 222 #define decode_lockt_maxsz (op_decode_hdr_maxsz + \ 223 decode_lock_denied_maxsz) 224 #define encode_locku_maxsz (op_encode_hdr_maxsz + 3 + \ 225 encode_stateid_maxsz + \ 226 4) 227 #define decode_locku_maxsz (op_decode_hdr_maxsz + \ 228 decode_stateid_maxsz) 229 #define encode_release_lockowner_maxsz \ 230 (op_encode_hdr_maxsz + \ 231 encode_lockowner_maxsz) 232 #define decode_release_lockowner_maxsz \ 233 (op_decode_hdr_maxsz) 234 #define encode_access_maxsz (op_encode_hdr_maxsz + 1) 235 #define decode_access_maxsz (op_decode_hdr_maxsz + 2) 236 #define encode_symlink_maxsz (op_encode_hdr_maxsz + \ 237 1 + nfs4_name_maxsz + \ 238 1 + \ 239 nfs4_fattr_maxsz) 240 #define decode_symlink_maxsz (op_decode_hdr_maxsz + 8) 241 #define encode_create_maxsz (op_encode_hdr_maxsz + \ 242 1 + 2 + nfs4_name_maxsz + \ 243 encode_attrs_maxsz) 244 #define decode_create_maxsz (op_decode_hdr_maxsz + \ 245 decode_change_info_maxsz + \ 246 nfs4_fattr_bitmap_maxsz) 247 #define encode_statfs_maxsz (encode_getattr_maxsz) 248 #define decode_statfs_maxsz (decode_getattr_maxsz) 249 #define encode_delegreturn_maxsz (op_encode_hdr_maxsz + 4) 250 #define decode_delegreturn_maxsz (op_decode_hdr_maxsz) 251 #define encode_getacl_maxsz (encode_getattr_maxsz) 252 #define decode_getacl_maxsz (op_decode_hdr_maxsz + \ 253 nfs4_fattr_bitmap_maxsz + 1) 254 #define encode_setacl_maxsz (op_encode_hdr_maxsz + \ 255 encode_stateid_maxsz + 3) 256 #define decode_setacl_maxsz (decode_setattr_maxsz) 257 #define encode_fs_locations_maxsz \ 258 (encode_getattr_maxsz) 259 #define decode_fs_locations_maxsz \ 260 (0) 261 #define encode_secinfo_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz) 262 #define decode_secinfo_maxsz (op_decode_hdr_maxsz + 1 + ((NFS_MAX_SECFLAVORS * (16 + GSS_OID_MAX_LEN)) / 4)) 263 264 #if defined(CONFIG_NFS_V4_1) 265 #define NFS4_MAX_MACHINE_NAME_LEN (64) 266 267 #define encode_exchange_id_maxsz (op_encode_hdr_maxsz + \ 268 encode_verifier_maxsz + \ 269 1 /* co_ownerid.len */ + \ 270 XDR_QUADLEN(NFS4_EXCHANGE_ID_LEN) + \ 271 1 /* flags */ + \ 272 1 /* spa_how */ + \ 273 0 /* SP4_NONE (for now) */ + \ 274 1 /* zero implemetation id array */) 275 #define decode_exchange_id_maxsz (op_decode_hdr_maxsz + \ 276 2 /* eir_clientid */ + \ 277 1 /* eir_sequenceid */ + \ 278 1 /* eir_flags */ + \ 279 1 /* spr_how */ + \ 280 0 /* SP4_NONE (for now) */ + \ 281 2 /* eir_server_owner.so_minor_id */ + \ 282 /* eir_server_owner.so_major_id<> */ \ 283 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \ 284 /* eir_server_scope<> */ \ 285 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \ 286 1 /* eir_server_impl_id array length */ + \ 287 0 /* ignored eir_server_impl_id contents */) 288 #define encode_channel_attrs_maxsz (6 + 1 /* ca_rdma_ird.len (0) */) 289 #define decode_channel_attrs_maxsz (6 + \ 290 1 /* ca_rdma_ird.len */ + \ 291 1 /* ca_rdma_ird */) 292 #define encode_create_session_maxsz (op_encode_hdr_maxsz + \ 293 2 /* csa_clientid */ + \ 294 1 /* csa_sequence */ + \ 295 1 /* csa_flags */ + \ 296 encode_channel_attrs_maxsz + \ 297 encode_channel_attrs_maxsz + \ 298 1 /* csa_cb_program */ + \ 299 1 /* csa_sec_parms.len (1) */ + \ 300 1 /* cb_secflavor (AUTH_SYS) */ + \ 301 1 /* stamp */ + \ 302 1 /* machinename.len */ + \ 303 XDR_QUADLEN(NFS4_MAX_MACHINE_NAME_LEN) + \ 304 1 /* uid */ + \ 305 1 /* gid */ + \ 306 1 /* gids.len (0) */) 307 #define decode_create_session_maxsz (op_decode_hdr_maxsz + \ 308 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \ 309 1 /* csr_sequence */ + \ 310 1 /* csr_flags */ + \ 311 decode_channel_attrs_maxsz + \ 312 decode_channel_attrs_maxsz) 313 #define encode_destroy_session_maxsz (op_encode_hdr_maxsz + 4) 314 #define decode_destroy_session_maxsz (op_decode_hdr_maxsz) 315 #define encode_sequence_maxsz (op_encode_hdr_maxsz + \ 316 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 4) 317 #define decode_sequence_maxsz (op_decode_hdr_maxsz + \ 318 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 5) 319 #define encode_reclaim_complete_maxsz (op_encode_hdr_maxsz + 4) 320 #define decode_reclaim_complete_maxsz (op_decode_hdr_maxsz + 4) 321 #define encode_getdevicelist_maxsz (op_encode_hdr_maxsz + 4 + \ 322 encode_verifier_maxsz) 323 #define decode_getdevicelist_maxsz (op_decode_hdr_maxsz + \ 324 2 /* nfs_cookie4 gdlr_cookie */ + \ 325 decode_verifier_maxsz \ 326 /* verifier4 gdlr_verifier */ + \ 327 1 /* gdlr_deviceid_list count */ + \ 328 XDR_QUADLEN(NFS4_PNFS_GETDEVLIST_MAXNUM * \ 329 NFS4_DEVICEID4_SIZE) \ 330 /* gdlr_deviceid_list */ + \ 331 1 /* bool gdlr_eof */) 332 #define encode_getdeviceinfo_maxsz (op_encode_hdr_maxsz + 4 + \ 333 XDR_QUADLEN(NFS4_DEVICEID4_SIZE)) 334 #define decode_getdeviceinfo_maxsz (op_decode_hdr_maxsz + \ 335 1 /* layout type */ + \ 336 1 /* opaque devaddr4 length */ + \ 337 /* devaddr4 payload is read into page */ \ 338 1 /* notification bitmap length */ + \ 339 1 /* notification bitmap */) 340 #define encode_layoutget_maxsz (op_encode_hdr_maxsz + 10 + \ 341 encode_stateid_maxsz) 342 #define decode_layoutget_maxsz (op_decode_hdr_maxsz + 8 + \ 343 decode_stateid_maxsz + \ 344 XDR_QUADLEN(PNFS_LAYOUT_MAXSIZE)) 345 #define encode_layoutcommit_maxsz (op_encode_hdr_maxsz + \ 346 2 /* offset */ + \ 347 2 /* length */ + \ 348 1 /* reclaim */ + \ 349 encode_stateid_maxsz + \ 350 1 /* new offset (true) */ + \ 351 2 /* last byte written */ + \ 352 1 /* nt_timechanged (false) */ + \ 353 1 /* layoutupdate4 layout type */ + \ 354 1 /* NULL filelayout layoutupdate4 payload */) 355 #define decode_layoutcommit_maxsz (op_decode_hdr_maxsz + 3) 356 #define encode_layoutreturn_maxsz (8 + op_encode_hdr_maxsz + \ 357 encode_stateid_maxsz + \ 358 1 /* FIXME: opaque lrf_body always empty at the moment */) 359 #define decode_layoutreturn_maxsz (op_decode_hdr_maxsz + \ 360 1 + decode_stateid_maxsz) 361 #define encode_secinfo_no_name_maxsz (op_encode_hdr_maxsz + 1) 362 #define decode_secinfo_no_name_maxsz decode_secinfo_maxsz 363 #define encode_test_stateid_maxsz (op_encode_hdr_maxsz + 2 + \ 364 XDR_QUADLEN(NFS4_STATEID_SIZE)) 365 #define decode_test_stateid_maxsz (op_decode_hdr_maxsz + 2 + 1) 366 #define encode_free_stateid_maxsz (op_encode_hdr_maxsz + 1 + \ 367 XDR_QUADLEN(NFS4_STATEID_SIZE)) 368 #define decode_free_stateid_maxsz (op_decode_hdr_maxsz + 1) 369 #else /* CONFIG_NFS_V4_1 */ 370 #define encode_sequence_maxsz 0 371 #define decode_sequence_maxsz 0 372 #endif /* CONFIG_NFS_V4_1 */ 373 374 #define NFS4_enc_compound_sz (1024) /* XXX: large enough? */ 375 #define NFS4_dec_compound_sz (1024) /* XXX: large enough? */ 376 #define NFS4_enc_read_sz (compound_encode_hdr_maxsz + \ 377 encode_sequence_maxsz + \ 378 encode_putfh_maxsz + \ 379 encode_read_maxsz) 380 #define NFS4_dec_read_sz (compound_decode_hdr_maxsz + \ 381 decode_sequence_maxsz + \ 382 decode_putfh_maxsz + \ 383 decode_read_maxsz) 384 #define NFS4_enc_readlink_sz (compound_encode_hdr_maxsz + \ 385 encode_sequence_maxsz + \ 386 encode_putfh_maxsz + \ 387 encode_readlink_maxsz) 388 #define NFS4_dec_readlink_sz (compound_decode_hdr_maxsz + \ 389 decode_sequence_maxsz + \ 390 decode_putfh_maxsz + \ 391 decode_readlink_maxsz) 392 #define NFS4_enc_readdir_sz (compound_encode_hdr_maxsz + \ 393 encode_sequence_maxsz + \ 394 encode_putfh_maxsz + \ 395 encode_readdir_maxsz) 396 #define NFS4_dec_readdir_sz (compound_decode_hdr_maxsz + \ 397 decode_sequence_maxsz + \ 398 decode_putfh_maxsz + \ 399 decode_readdir_maxsz) 400 #define NFS4_enc_write_sz (compound_encode_hdr_maxsz + \ 401 encode_sequence_maxsz + \ 402 encode_putfh_maxsz + \ 403 encode_write_maxsz + \ 404 encode_getattr_maxsz) 405 #define NFS4_dec_write_sz (compound_decode_hdr_maxsz + \ 406 decode_sequence_maxsz + \ 407 decode_putfh_maxsz + \ 408 decode_write_maxsz + \ 409 decode_getattr_maxsz) 410 #define NFS4_enc_commit_sz (compound_encode_hdr_maxsz + \ 411 encode_sequence_maxsz + \ 412 encode_putfh_maxsz + \ 413 encode_commit_maxsz + \ 414 encode_getattr_maxsz) 415 #define NFS4_dec_commit_sz (compound_decode_hdr_maxsz + \ 416 decode_sequence_maxsz + \ 417 decode_putfh_maxsz + \ 418 decode_commit_maxsz + \ 419 decode_getattr_maxsz) 420 #define NFS4_enc_open_sz (compound_encode_hdr_maxsz + \ 421 encode_sequence_maxsz + \ 422 encode_putfh_maxsz + \ 423 encode_savefh_maxsz + \ 424 encode_open_maxsz + \ 425 encode_getfh_maxsz + \ 426 encode_getattr_maxsz + \ 427 encode_restorefh_maxsz + \ 428 encode_getattr_maxsz) 429 #define NFS4_dec_open_sz (compound_decode_hdr_maxsz + \ 430 decode_sequence_maxsz + \ 431 decode_putfh_maxsz + \ 432 decode_savefh_maxsz + \ 433 decode_open_maxsz + \ 434 decode_getfh_maxsz + \ 435 decode_getattr_maxsz + \ 436 decode_restorefh_maxsz + \ 437 decode_getattr_maxsz) 438 #define NFS4_enc_open_confirm_sz \ 439 (compound_encode_hdr_maxsz + \ 440 encode_putfh_maxsz + \ 441 encode_open_confirm_maxsz) 442 #define NFS4_dec_open_confirm_sz \ 443 (compound_decode_hdr_maxsz + \ 444 decode_putfh_maxsz + \ 445 decode_open_confirm_maxsz) 446 #define NFS4_enc_open_noattr_sz (compound_encode_hdr_maxsz + \ 447 encode_sequence_maxsz + \ 448 encode_putfh_maxsz + \ 449 encode_open_maxsz + \ 450 encode_getattr_maxsz) 451 #define NFS4_dec_open_noattr_sz (compound_decode_hdr_maxsz + \ 452 decode_sequence_maxsz + \ 453 decode_putfh_maxsz + \ 454 decode_open_maxsz + \ 455 decode_getattr_maxsz) 456 #define NFS4_enc_open_downgrade_sz \ 457 (compound_encode_hdr_maxsz + \ 458 encode_sequence_maxsz + \ 459 encode_putfh_maxsz + \ 460 encode_open_downgrade_maxsz + \ 461 encode_getattr_maxsz) 462 #define NFS4_dec_open_downgrade_sz \ 463 (compound_decode_hdr_maxsz + \ 464 decode_sequence_maxsz + \ 465 decode_putfh_maxsz + \ 466 decode_open_downgrade_maxsz + \ 467 decode_getattr_maxsz) 468 #define NFS4_enc_close_sz (compound_encode_hdr_maxsz + \ 469 encode_sequence_maxsz + \ 470 encode_putfh_maxsz + \ 471 encode_close_maxsz + \ 472 encode_getattr_maxsz) 473 #define NFS4_dec_close_sz (compound_decode_hdr_maxsz + \ 474 decode_sequence_maxsz + \ 475 decode_putfh_maxsz + \ 476 decode_close_maxsz + \ 477 decode_getattr_maxsz) 478 #define NFS4_enc_setattr_sz (compound_encode_hdr_maxsz + \ 479 encode_sequence_maxsz + \ 480 encode_putfh_maxsz + \ 481 encode_setattr_maxsz + \ 482 encode_getattr_maxsz) 483 #define NFS4_dec_setattr_sz (compound_decode_hdr_maxsz + \ 484 decode_sequence_maxsz + \ 485 decode_putfh_maxsz + \ 486 decode_setattr_maxsz + \ 487 decode_getattr_maxsz) 488 #define NFS4_enc_fsinfo_sz (compound_encode_hdr_maxsz + \ 489 encode_sequence_maxsz + \ 490 encode_putfh_maxsz + \ 491 encode_fsinfo_maxsz) 492 #define NFS4_dec_fsinfo_sz (compound_decode_hdr_maxsz + \ 493 decode_sequence_maxsz + \ 494 decode_putfh_maxsz + \ 495 decode_fsinfo_maxsz) 496 #define NFS4_enc_renew_sz (compound_encode_hdr_maxsz + \ 497 encode_renew_maxsz) 498 #define NFS4_dec_renew_sz (compound_decode_hdr_maxsz + \ 499 decode_renew_maxsz) 500 #define NFS4_enc_setclientid_sz (compound_encode_hdr_maxsz + \ 501 encode_setclientid_maxsz) 502 #define NFS4_dec_setclientid_sz (compound_decode_hdr_maxsz + \ 503 decode_setclientid_maxsz) 504 #define NFS4_enc_setclientid_confirm_sz \ 505 (compound_encode_hdr_maxsz + \ 506 encode_setclientid_confirm_maxsz + \ 507 encode_putrootfh_maxsz + \ 508 encode_fsinfo_maxsz) 509 #define NFS4_dec_setclientid_confirm_sz \ 510 (compound_decode_hdr_maxsz + \ 511 decode_setclientid_confirm_maxsz + \ 512 decode_putrootfh_maxsz + \ 513 decode_fsinfo_maxsz) 514 #define NFS4_enc_lock_sz (compound_encode_hdr_maxsz + \ 515 encode_sequence_maxsz + \ 516 encode_putfh_maxsz + \ 517 encode_lock_maxsz) 518 #define NFS4_dec_lock_sz (compound_decode_hdr_maxsz + \ 519 decode_sequence_maxsz + \ 520 decode_putfh_maxsz + \ 521 decode_lock_maxsz) 522 #define NFS4_enc_lockt_sz (compound_encode_hdr_maxsz + \ 523 encode_sequence_maxsz + \ 524 encode_putfh_maxsz + \ 525 encode_lockt_maxsz) 526 #define NFS4_dec_lockt_sz (compound_decode_hdr_maxsz + \ 527 decode_sequence_maxsz + \ 528 decode_putfh_maxsz + \ 529 decode_lockt_maxsz) 530 #define NFS4_enc_locku_sz (compound_encode_hdr_maxsz + \ 531 encode_sequence_maxsz + \ 532 encode_putfh_maxsz + \ 533 encode_locku_maxsz) 534 #define NFS4_dec_locku_sz (compound_decode_hdr_maxsz + \ 535 decode_sequence_maxsz + \ 536 decode_putfh_maxsz + \ 537 decode_locku_maxsz) 538 #define NFS4_enc_release_lockowner_sz \ 539 (compound_encode_hdr_maxsz + \ 540 encode_lockowner_maxsz) 541 #define NFS4_dec_release_lockowner_sz \ 542 (compound_decode_hdr_maxsz + \ 543 decode_lockowner_maxsz) 544 #define NFS4_enc_access_sz (compound_encode_hdr_maxsz + \ 545 encode_sequence_maxsz + \ 546 encode_putfh_maxsz + \ 547 encode_access_maxsz + \ 548 encode_getattr_maxsz) 549 #define NFS4_dec_access_sz (compound_decode_hdr_maxsz + \ 550 decode_sequence_maxsz + \ 551 decode_putfh_maxsz + \ 552 decode_access_maxsz + \ 553 decode_getattr_maxsz) 554 #define NFS4_enc_getattr_sz (compound_encode_hdr_maxsz + \ 555 encode_sequence_maxsz + \ 556 encode_putfh_maxsz + \ 557 encode_getattr_maxsz) 558 #define NFS4_dec_getattr_sz (compound_decode_hdr_maxsz + \ 559 decode_sequence_maxsz + \ 560 decode_putfh_maxsz + \ 561 decode_getattr_maxsz) 562 #define NFS4_enc_lookup_sz (compound_encode_hdr_maxsz + \ 563 encode_sequence_maxsz + \ 564 encode_putfh_maxsz + \ 565 encode_lookup_maxsz + \ 566 encode_getattr_maxsz + \ 567 encode_getfh_maxsz) 568 #define NFS4_dec_lookup_sz (compound_decode_hdr_maxsz + \ 569 decode_sequence_maxsz + \ 570 decode_putfh_maxsz + \ 571 decode_lookup_maxsz + \ 572 decode_getattr_maxsz + \ 573 decode_getfh_maxsz) 574 #define NFS4_enc_lookup_root_sz (compound_encode_hdr_maxsz + \ 575 encode_sequence_maxsz + \ 576 encode_putrootfh_maxsz + \ 577 encode_getattr_maxsz + \ 578 encode_getfh_maxsz) 579 #define NFS4_dec_lookup_root_sz (compound_decode_hdr_maxsz + \ 580 decode_sequence_maxsz + \ 581 decode_putrootfh_maxsz + \ 582 decode_getattr_maxsz + \ 583 decode_getfh_maxsz) 584 #define NFS4_enc_remove_sz (compound_encode_hdr_maxsz + \ 585 encode_sequence_maxsz + \ 586 encode_putfh_maxsz + \ 587 encode_remove_maxsz + \ 588 encode_getattr_maxsz) 589 #define NFS4_dec_remove_sz (compound_decode_hdr_maxsz + \ 590 decode_sequence_maxsz + \ 591 decode_putfh_maxsz + \ 592 decode_remove_maxsz + \ 593 decode_getattr_maxsz) 594 #define NFS4_enc_rename_sz (compound_encode_hdr_maxsz + \ 595 encode_sequence_maxsz + \ 596 encode_putfh_maxsz + \ 597 encode_savefh_maxsz + \ 598 encode_putfh_maxsz + \ 599 encode_rename_maxsz + \ 600 encode_getattr_maxsz + \ 601 encode_restorefh_maxsz + \ 602 encode_getattr_maxsz) 603 #define NFS4_dec_rename_sz (compound_decode_hdr_maxsz + \ 604 decode_sequence_maxsz + \ 605 decode_putfh_maxsz + \ 606 decode_savefh_maxsz + \ 607 decode_putfh_maxsz + \ 608 decode_rename_maxsz + \ 609 decode_getattr_maxsz + \ 610 decode_restorefh_maxsz + \ 611 decode_getattr_maxsz) 612 #define NFS4_enc_link_sz (compound_encode_hdr_maxsz + \ 613 encode_sequence_maxsz + \ 614 encode_putfh_maxsz + \ 615 encode_savefh_maxsz + \ 616 encode_putfh_maxsz + \ 617 encode_link_maxsz + \ 618 decode_getattr_maxsz + \ 619 encode_restorefh_maxsz + \ 620 decode_getattr_maxsz) 621 #define NFS4_dec_link_sz (compound_decode_hdr_maxsz + \ 622 decode_sequence_maxsz + \ 623 decode_putfh_maxsz + \ 624 decode_savefh_maxsz + \ 625 decode_putfh_maxsz + \ 626 decode_link_maxsz + \ 627 decode_getattr_maxsz + \ 628 decode_restorefh_maxsz + \ 629 decode_getattr_maxsz) 630 #define NFS4_enc_symlink_sz (compound_encode_hdr_maxsz + \ 631 encode_sequence_maxsz + \ 632 encode_putfh_maxsz + \ 633 encode_symlink_maxsz + \ 634 encode_getattr_maxsz + \ 635 encode_getfh_maxsz) 636 #define NFS4_dec_symlink_sz (compound_decode_hdr_maxsz + \ 637 decode_sequence_maxsz + \ 638 decode_putfh_maxsz + \ 639 decode_symlink_maxsz + \ 640 decode_getattr_maxsz + \ 641 decode_getfh_maxsz) 642 #define NFS4_enc_create_sz (compound_encode_hdr_maxsz + \ 643 encode_sequence_maxsz + \ 644 encode_putfh_maxsz + \ 645 encode_savefh_maxsz + \ 646 encode_create_maxsz + \ 647 encode_getfh_maxsz + \ 648 encode_getattr_maxsz + \ 649 encode_restorefh_maxsz + \ 650 encode_getattr_maxsz) 651 #define NFS4_dec_create_sz (compound_decode_hdr_maxsz + \ 652 decode_sequence_maxsz + \ 653 decode_putfh_maxsz + \ 654 decode_savefh_maxsz + \ 655 decode_create_maxsz + \ 656 decode_getfh_maxsz + \ 657 decode_getattr_maxsz + \ 658 decode_restorefh_maxsz + \ 659 decode_getattr_maxsz) 660 #define NFS4_enc_pathconf_sz (compound_encode_hdr_maxsz + \ 661 encode_sequence_maxsz + \ 662 encode_putfh_maxsz + \ 663 encode_getattr_maxsz) 664 #define NFS4_dec_pathconf_sz (compound_decode_hdr_maxsz + \ 665 decode_sequence_maxsz + \ 666 decode_putfh_maxsz + \ 667 decode_getattr_maxsz) 668 #define NFS4_enc_statfs_sz (compound_encode_hdr_maxsz + \ 669 encode_sequence_maxsz + \ 670 encode_putfh_maxsz + \ 671 encode_statfs_maxsz) 672 #define NFS4_dec_statfs_sz (compound_decode_hdr_maxsz + \ 673 decode_sequence_maxsz + \ 674 decode_putfh_maxsz + \ 675 decode_statfs_maxsz) 676 #define NFS4_enc_server_caps_sz (compound_encode_hdr_maxsz + \ 677 encode_sequence_maxsz + \ 678 encode_putfh_maxsz + \ 679 encode_getattr_maxsz) 680 #define NFS4_dec_server_caps_sz (compound_decode_hdr_maxsz + \ 681 decode_sequence_maxsz + \ 682 decode_putfh_maxsz + \ 683 decode_getattr_maxsz) 684 #define NFS4_enc_delegreturn_sz (compound_encode_hdr_maxsz + \ 685 encode_sequence_maxsz + \ 686 encode_putfh_maxsz + \ 687 encode_delegreturn_maxsz + \ 688 encode_getattr_maxsz) 689 #define NFS4_dec_delegreturn_sz (compound_decode_hdr_maxsz + \ 690 decode_sequence_maxsz + \ 691 decode_delegreturn_maxsz + \ 692 decode_getattr_maxsz) 693 #define NFS4_enc_getacl_sz (compound_encode_hdr_maxsz + \ 694 encode_sequence_maxsz + \ 695 encode_putfh_maxsz + \ 696 encode_getacl_maxsz) 697 #define NFS4_dec_getacl_sz (compound_decode_hdr_maxsz + \ 698 decode_sequence_maxsz + \ 699 decode_putfh_maxsz + \ 700 decode_getacl_maxsz) 701 #define NFS4_enc_setacl_sz (compound_encode_hdr_maxsz + \ 702 encode_sequence_maxsz + \ 703 encode_putfh_maxsz + \ 704 encode_setacl_maxsz) 705 #define NFS4_dec_setacl_sz (compound_decode_hdr_maxsz + \ 706 decode_sequence_maxsz + \ 707 decode_putfh_maxsz + \ 708 decode_setacl_maxsz) 709 #define NFS4_enc_fs_locations_sz \ 710 (compound_encode_hdr_maxsz + \ 711 encode_sequence_maxsz + \ 712 encode_putfh_maxsz + \ 713 encode_lookup_maxsz + \ 714 encode_fs_locations_maxsz) 715 #define NFS4_dec_fs_locations_sz \ 716 (compound_decode_hdr_maxsz + \ 717 decode_sequence_maxsz + \ 718 decode_putfh_maxsz + \ 719 decode_lookup_maxsz + \ 720 decode_fs_locations_maxsz) 721 #define NFS4_enc_secinfo_sz (compound_encode_hdr_maxsz + \ 722 encode_sequence_maxsz + \ 723 encode_putfh_maxsz + \ 724 encode_secinfo_maxsz) 725 #define NFS4_dec_secinfo_sz (compound_decode_hdr_maxsz + \ 726 decode_sequence_maxsz + \ 727 decode_putfh_maxsz + \ 728 decode_secinfo_maxsz) 729 #if defined(CONFIG_NFS_V4_1) 730 #define NFS4_enc_exchange_id_sz \ 731 (compound_encode_hdr_maxsz + \ 732 encode_exchange_id_maxsz) 733 #define NFS4_dec_exchange_id_sz \ 734 (compound_decode_hdr_maxsz + \ 735 decode_exchange_id_maxsz) 736 #define NFS4_enc_create_session_sz \ 737 (compound_encode_hdr_maxsz + \ 738 encode_create_session_maxsz) 739 #define NFS4_dec_create_session_sz \ 740 (compound_decode_hdr_maxsz + \ 741 decode_create_session_maxsz) 742 #define NFS4_enc_destroy_session_sz (compound_encode_hdr_maxsz + \ 743 encode_destroy_session_maxsz) 744 #define NFS4_dec_destroy_session_sz (compound_decode_hdr_maxsz + \ 745 decode_destroy_session_maxsz) 746 #define NFS4_enc_sequence_sz \ 747 (compound_decode_hdr_maxsz + \ 748 encode_sequence_maxsz) 749 #define NFS4_dec_sequence_sz \ 750 (compound_decode_hdr_maxsz + \ 751 decode_sequence_maxsz) 752 #define NFS4_enc_get_lease_time_sz (compound_encode_hdr_maxsz + \ 753 encode_sequence_maxsz + \ 754 encode_putrootfh_maxsz + \ 755 encode_fsinfo_maxsz) 756 #define NFS4_dec_get_lease_time_sz (compound_decode_hdr_maxsz + \ 757 decode_sequence_maxsz + \ 758 decode_putrootfh_maxsz + \ 759 decode_fsinfo_maxsz) 760 #define NFS4_enc_reclaim_complete_sz (compound_encode_hdr_maxsz + \ 761 encode_sequence_maxsz + \ 762 encode_reclaim_complete_maxsz) 763 #define NFS4_dec_reclaim_complete_sz (compound_decode_hdr_maxsz + \ 764 decode_sequence_maxsz + \ 765 decode_reclaim_complete_maxsz) 766 #define NFS4_enc_getdevicelist_sz (compound_encode_hdr_maxsz + \ 767 encode_sequence_maxsz + \ 768 encode_putfh_maxsz + \ 769 encode_getdevicelist_maxsz) 770 #define NFS4_dec_getdevicelist_sz (compound_decode_hdr_maxsz + \ 771 decode_sequence_maxsz + \ 772 decode_putfh_maxsz + \ 773 decode_getdevicelist_maxsz) 774 #define NFS4_enc_getdeviceinfo_sz (compound_encode_hdr_maxsz + \ 775 encode_sequence_maxsz +\ 776 encode_getdeviceinfo_maxsz) 777 #define NFS4_dec_getdeviceinfo_sz (compound_decode_hdr_maxsz + \ 778 decode_sequence_maxsz + \ 779 decode_getdeviceinfo_maxsz) 780 #define NFS4_enc_layoutget_sz (compound_encode_hdr_maxsz + \ 781 encode_sequence_maxsz + \ 782 encode_putfh_maxsz + \ 783 encode_layoutget_maxsz) 784 #define NFS4_dec_layoutget_sz (compound_decode_hdr_maxsz + \ 785 decode_sequence_maxsz + \ 786 decode_putfh_maxsz + \ 787 decode_layoutget_maxsz) 788 #define NFS4_enc_layoutcommit_sz (compound_encode_hdr_maxsz + \ 789 encode_sequence_maxsz +\ 790 encode_putfh_maxsz + \ 791 encode_layoutcommit_maxsz + \ 792 encode_getattr_maxsz) 793 #define NFS4_dec_layoutcommit_sz (compound_decode_hdr_maxsz + \ 794 decode_sequence_maxsz + \ 795 decode_putfh_maxsz + \ 796 decode_layoutcommit_maxsz + \ 797 decode_getattr_maxsz) 798 #define NFS4_enc_layoutreturn_sz (compound_encode_hdr_maxsz + \ 799 encode_sequence_maxsz + \ 800 encode_putfh_maxsz + \ 801 encode_layoutreturn_maxsz) 802 #define NFS4_dec_layoutreturn_sz (compound_decode_hdr_maxsz + \ 803 decode_sequence_maxsz + \ 804 decode_putfh_maxsz + \ 805 decode_layoutreturn_maxsz) 806 #define NFS4_enc_secinfo_no_name_sz (compound_encode_hdr_maxsz + \ 807 encode_sequence_maxsz + \ 808 encode_putrootfh_maxsz +\ 809 encode_secinfo_no_name_maxsz) 810 #define NFS4_dec_secinfo_no_name_sz (compound_decode_hdr_maxsz + \ 811 decode_sequence_maxsz + \ 812 decode_putrootfh_maxsz + \ 813 decode_secinfo_no_name_maxsz) 814 #define NFS4_enc_test_stateid_sz (compound_encode_hdr_maxsz + \ 815 encode_sequence_maxsz + \ 816 encode_test_stateid_maxsz) 817 #define NFS4_dec_test_stateid_sz (compound_decode_hdr_maxsz + \ 818 decode_sequence_maxsz + \ 819 decode_test_stateid_maxsz) 820 #define NFS4_enc_free_stateid_sz (compound_encode_hdr_maxsz + \ 821 encode_sequence_maxsz + \ 822 encode_free_stateid_maxsz) 823 #define NFS4_dec_free_stateid_sz (compound_decode_hdr_maxsz + \ 824 decode_sequence_maxsz + \ 825 decode_free_stateid_maxsz) 826 827 const u32 nfs41_maxwrite_overhead = ((RPC_MAX_HEADER_WITH_AUTH + 828 compound_encode_hdr_maxsz + 829 encode_sequence_maxsz + 830 encode_putfh_maxsz + 831 encode_getattr_maxsz) * 832 XDR_UNIT); 833 834 const u32 nfs41_maxread_overhead = ((RPC_MAX_HEADER_WITH_AUTH + 835 compound_decode_hdr_maxsz + 836 decode_sequence_maxsz + 837 decode_putfh_maxsz) * 838 XDR_UNIT); 839 #endif /* CONFIG_NFS_V4_1 */ 840 841 static const umode_t nfs_type2fmt[] = { 842 [NF4BAD] = 0, 843 [NF4REG] = S_IFREG, 844 [NF4DIR] = S_IFDIR, 845 [NF4BLK] = S_IFBLK, 846 [NF4CHR] = S_IFCHR, 847 [NF4LNK] = S_IFLNK, 848 [NF4SOCK] = S_IFSOCK, 849 [NF4FIFO] = S_IFIFO, 850 [NF4ATTRDIR] = 0, 851 [NF4NAMEDATTR] = 0, 852 }; 853 854 struct compound_hdr { 855 int32_t status; 856 uint32_t nops; 857 __be32 * nops_p; 858 uint32_t taglen; 859 char * tag; 860 uint32_t replen; /* expected reply words */ 861 u32 minorversion; 862 }; 863 864 static __be32 *reserve_space(struct xdr_stream *xdr, size_t nbytes) 865 { 866 __be32 *p = xdr_reserve_space(xdr, nbytes); 867 BUG_ON(!p); 868 return p; 869 } 870 871 static void encode_string(struct xdr_stream *xdr, unsigned int len, const char *str) 872 { 873 __be32 *p; 874 875 p = xdr_reserve_space(xdr, 4 + len); 876 BUG_ON(p == NULL); 877 xdr_encode_opaque(p, str, len); 878 } 879 880 static void encode_compound_hdr(struct xdr_stream *xdr, 881 struct rpc_rqst *req, 882 struct compound_hdr *hdr) 883 { 884 __be32 *p; 885 struct rpc_auth *auth = req->rq_cred->cr_auth; 886 887 /* initialize running count of expected bytes in reply. 888 * NOTE: the replied tag SHOULD be the same is the one sent, 889 * but this is not required as a MUST for the server to do so. */ 890 hdr->replen = RPC_REPHDRSIZE + auth->au_rslack + 3 + hdr->taglen; 891 892 dprintk("encode_compound: tag=%.*s\n", (int)hdr->taglen, hdr->tag); 893 BUG_ON(hdr->taglen > NFS4_MAXTAGLEN); 894 p = reserve_space(xdr, 4 + hdr->taglen + 8); 895 p = xdr_encode_opaque(p, hdr->tag, hdr->taglen); 896 *p++ = cpu_to_be32(hdr->minorversion); 897 hdr->nops_p = p; 898 *p = cpu_to_be32(hdr->nops); 899 } 900 901 static void encode_nops(struct compound_hdr *hdr) 902 { 903 BUG_ON(hdr->nops > NFS4_MAX_OPS); 904 *hdr->nops_p = htonl(hdr->nops); 905 } 906 907 static void encode_nfs4_verifier(struct xdr_stream *xdr, const nfs4_verifier *verf) 908 { 909 __be32 *p; 910 911 p = xdr_reserve_space(xdr, NFS4_VERIFIER_SIZE); 912 BUG_ON(p == NULL); 913 xdr_encode_opaque_fixed(p, verf->data, NFS4_VERIFIER_SIZE); 914 } 915 916 static void encode_attrs(struct xdr_stream *xdr, const struct iattr *iap, const struct nfs_server *server) 917 { 918 char owner_name[IDMAP_NAMESZ]; 919 char owner_group[IDMAP_NAMESZ]; 920 int owner_namelen = 0; 921 int owner_grouplen = 0; 922 __be32 *p; 923 __be32 *q; 924 int len; 925 uint32_t bmval0 = 0; 926 uint32_t bmval1 = 0; 927 928 /* 929 * We reserve enough space to write the entire attribute buffer at once. 930 * In the worst-case, this would be 931 * 12(bitmap) + 4(attrlen) + 8(size) + 4(mode) + 4(atime) + 4(mtime) 932 * = 36 bytes, plus any contribution from variable-length fields 933 * such as owner/group. 934 */ 935 len = 16; 936 937 /* Sigh */ 938 if (iap->ia_valid & ATTR_SIZE) 939 len += 8; 940 if (iap->ia_valid & ATTR_MODE) 941 len += 4; 942 if (iap->ia_valid & ATTR_UID) { 943 owner_namelen = nfs_map_uid_to_name(server, iap->ia_uid, owner_name, IDMAP_NAMESZ); 944 if (owner_namelen < 0) { 945 dprintk("nfs: couldn't resolve uid %d to string\n", 946 iap->ia_uid); 947 /* XXX */ 948 strcpy(owner_name, "nobody"); 949 owner_namelen = sizeof("nobody") - 1; 950 /* goto out; */ 951 } 952 len += 4 + (XDR_QUADLEN(owner_namelen) << 2); 953 } 954 if (iap->ia_valid & ATTR_GID) { 955 owner_grouplen = nfs_map_gid_to_group(server, iap->ia_gid, owner_group, IDMAP_NAMESZ); 956 if (owner_grouplen < 0) { 957 dprintk("nfs: couldn't resolve gid %d to string\n", 958 iap->ia_gid); 959 strcpy(owner_group, "nobody"); 960 owner_grouplen = sizeof("nobody") - 1; 961 /* goto out; */ 962 } 963 len += 4 + (XDR_QUADLEN(owner_grouplen) << 2); 964 } 965 if (iap->ia_valid & ATTR_ATIME_SET) 966 len += 16; 967 else if (iap->ia_valid & ATTR_ATIME) 968 len += 4; 969 if (iap->ia_valid & ATTR_MTIME_SET) 970 len += 16; 971 else if (iap->ia_valid & ATTR_MTIME) 972 len += 4; 973 p = reserve_space(xdr, len); 974 975 /* 976 * We write the bitmap length now, but leave the bitmap and the attribute 977 * buffer length to be backfilled at the end of this routine. 978 */ 979 *p++ = cpu_to_be32(2); 980 q = p; 981 p += 3; 982 983 if (iap->ia_valid & ATTR_SIZE) { 984 bmval0 |= FATTR4_WORD0_SIZE; 985 p = xdr_encode_hyper(p, iap->ia_size); 986 } 987 if (iap->ia_valid & ATTR_MODE) { 988 bmval1 |= FATTR4_WORD1_MODE; 989 *p++ = cpu_to_be32(iap->ia_mode & S_IALLUGO); 990 } 991 if (iap->ia_valid & ATTR_UID) { 992 bmval1 |= FATTR4_WORD1_OWNER; 993 p = xdr_encode_opaque(p, owner_name, owner_namelen); 994 } 995 if (iap->ia_valid & ATTR_GID) { 996 bmval1 |= FATTR4_WORD1_OWNER_GROUP; 997 p = xdr_encode_opaque(p, owner_group, owner_grouplen); 998 } 999 if (iap->ia_valid & ATTR_ATIME_SET) { 1000 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET; 1001 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME); 1002 *p++ = cpu_to_be32(0); 1003 *p++ = cpu_to_be32(iap->ia_atime.tv_sec); 1004 *p++ = cpu_to_be32(iap->ia_atime.tv_nsec); 1005 } 1006 else if (iap->ia_valid & ATTR_ATIME) { 1007 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET; 1008 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME); 1009 } 1010 if (iap->ia_valid & ATTR_MTIME_SET) { 1011 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET; 1012 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME); 1013 *p++ = cpu_to_be32(0); 1014 *p++ = cpu_to_be32(iap->ia_mtime.tv_sec); 1015 *p++ = cpu_to_be32(iap->ia_mtime.tv_nsec); 1016 } 1017 else if (iap->ia_valid & ATTR_MTIME) { 1018 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET; 1019 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME); 1020 } 1021 1022 /* 1023 * Now we backfill the bitmap and the attribute buffer length. 1024 */ 1025 if (len != ((char *)p - (char *)q) + 4) { 1026 printk(KERN_ERR "nfs: Attr length error, %u != %Zu\n", 1027 len, ((char *)p - (char *)q) + 4); 1028 BUG(); 1029 } 1030 len = (char *)p - (char *)q - 12; 1031 *q++ = htonl(bmval0); 1032 *q++ = htonl(bmval1); 1033 *q = htonl(len); 1034 1035 /* out: */ 1036 } 1037 1038 static void encode_access(struct xdr_stream *xdr, u32 access, struct compound_hdr *hdr) 1039 { 1040 __be32 *p; 1041 1042 p = reserve_space(xdr, 8); 1043 *p++ = cpu_to_be32(OP_ACCESS); 1044 *p = cpu_to_be32(access); 1045 hdr->nops++; 1046 hdr->replen += decode_access_maxsz; 1047 } 1048 1049 static void encode_close(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr) 1050 { 1051 __be32 *p; 1052 1053 p = reserve_space(xdr, 8+NFS4_STATEID_SIZE); 1054 *p++ = cpu_to_be32(OP_CLOSE); 1055 *p++ = cpu_to_be32(arg->seqid->sequence->counter); 1056 xdr_encode_opaque_fixed(p, arg->stateid->data, NFS4_STATEID_SIZE); 1057 hdr->nops++; 1058 hdr->replen += decode_close_maxsz; 1059 } 1060 1061 static void encode_commit(struct xdr_stream *xdr, const struct nfs_writeargs *args, struct compound_hdr *hdr) 1062 { 1063 __be32 *p; 1064 1065 p = reserve_space(xdr, 16); 1066 *p++ = cpu_to_be32(OP_COMMIT); 1067 p = xdr_encode_hyper(p, args->offset); 1068 *p = cpu_to_be32(args->count); 1069 hdr->nops++; 1070 hdr->replen += decode_commit_maxsz; 1071 } 1072 1073 static void encode_create(struct xdr_stream *xdr, const struct nfs4_create_arg *create, struct compound_hdr *hdr) 1074 { 1075 __be32 *p; 1076 1077 p = reserve_space(xdr, 8); 1078 *p++ = cpu_to_be32(OP_CREATE); 1079 *p = cpu_to_be32(create->ftype); 1080 1081 switch (create->ftype) { 1082 case NF4LNK: 1083 p = reserve_space(xdr, 4); 1084 *p = cpu_to_be32(create->u.symlink.len); 1085 xdr_write_pages(xdr, create->u.symlink.pages, 0, create->u.symlink.len); 1086 break; 1087 1088 case NF4BLK: case NF4CHR: 1089 p = reserve_space(xdr, 8); 1090 *p++ = cpu_to_be32(create->u.device.specdata1); 1091 *p = cpu_to_be32(create->u.device.specdata2); 1092 break; 1093 1094 default: 1095 break; 1096 } 1097 1098 encode_string(xdr, create->name->len, create->name->name); 1099 hdr->nops++; 1100 hdr->replen += decode_create_maxsz; 1101 1102 encode_attrs(xdr, create->attrs, create->server); 1103 } 1104 1105 static void encode_getattr_one(struct xdr_stream *xdr, uint32_t bitmap, struct compound_hdr *hdr) 1106 { 1107 __be32 *p; 1108 1109 p = reserve_space(xdr, 12); 1110 *p++ = cpu_to_be32(OP_GETATTR); 1111 *p++ = cpu_to_be32(1); 1112 *p = cpu_to_be32(bitmap); 1113 hdr->nops++; 1114 hdr->replen += decode_getattr_maxsz; 1115 } 1116 1117 static void encode_getattr_two(struct xdr_stream *xdr, uint32_t bm0, uint32_t bm1, struct compound_hdr *hdr) 1118 { 1119 __be32 *p; 1120 1121 p = reserve_space(xdr, 16); 1122 *p++ = cpu_to_be32(OP_GETATTR); 1123 *p++ = cpu_to_be32(2); 1124 *p++ = cpu_to_be32(bm0); 1125 *p = cpu_to_be32(bm1); 1126 hdr->nops++; 1127 hdr->replen += decode_getattr_maxsz; 1128 } 1129 1130 static void 1131 encode_getattr_three(struct xdr_stream *xdr, 1132 uint32_t bm0, uint32_t bm1, uint32_t bm2, 1133 struct compound_hdr *hdr) 1134 { 1135 __be32 *p; 1136 1137 p = reserve_space(xdr, 4); 1138 *p = cpu_to_be32(OP_GETATTR); 1139 if (bm2) { 1140 p = reserve_space(xdr, 16); 1141 *p++ = cpu_to_be32(3); 1142 *p++ = cpu_to_be32(bm0); 1143 *p++ = cpu_to_be32(bm1); 1144 *p = cpu_to_be32(bm2); 1145 } else if (bm1) { 1146 p = reserve_space(xdr, 12); 1147 *p++ = cpu_to_be32(2); 1148 *p++ = cpu_to_be32(bm0); 1149 *p = cpu_to_be32(bm1); 1150 } else { 1151 p = reserve_space(xdr, 8); 1152 *p++ = cpu_to_be32(1); 1153 *p = cpu_to_be32(bm0); 1154 } 1155 hdr->nops++; 1156 hdr->replen += decode_getattr_maxsz; 1157 } 1158 1159 static void encode_getfattr(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr) 1160 { 1161 encode_getattr_two(xdr, bitmask[0] & nfs4_fattr_bitmap[0], 1162 bitmask[1] & nfs4_fattr_bitmap[1], hdr); 1163 } 1164 1165 static void encode_fsinfo(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr) 1166 { 1167 encode_getattr_three(xdr, 1168 bitmask[0] & nfs4_fsinfo_bitmap[0], 1169 bitmask[1] & nfs4_fsinfo_bitmap[1], 1170 bitmask[2] & nfs4_fsinfo_bitmap[2], 1171 hdr); 1172 } 1173 1174 static void encode_fs_locations(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr) 1175 { 1176 encode_getattr_two(xdr, bitmask[0] & nfs4_fs_locations_bitmap[0], 1177 bitmask[1] & nfs4_fs_locations_bitmap[1], hdr); 1178 } 1179 1180 static void encode_getfh(struct xdr_stream *xdr, struct compound_hdr *hdr) 1181 { 1182 __be32 *p; 1183 1184 p = reserve_space(xdr, 4); 1185 *p = cpu_to_be32(OP_GETFH); 1186 hdr->nops++; 1187 hdr->replen += decode_getfh_maxsz; 1188 } 1189 1190 static void encode_link(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr) 1191 { 1192 __be32 *p; 1193 1194 p = reserve_space(xdr, 8 + name->len); 1195 *p++ = cpu_to_be32(OP_LINK); 1196 xdr_encode_opaque(p, name->name, name->len); 1197 hdr->nops++; 1198 hdr->replen += decode_link_maxsz; 1199 } 1200 1201 static inline int nfs4_lock_type(struct file_lock *fl, int block) 1202 { 1203 if ((fl->fl_type & (F_RDLCK|F_WRLCK|F_UNLCK)) == F_RDLCK) 1204 return block ? NFS4_READW_LT : NFS4_READ_LT; 1205 return block ? NFS4_WRITEW_LT : NFS4_WRITE_LT; 1206 } 1207 1208 static inline uint64_t nfs4_lock_length(struct file_lock *fl) 1209 { 1210 if (fl->fl_end == OFFSET_MAX) 1211 return ~(uint64_t)0; 1212 return fl->fl_end - fl->fl_start + 1; 1213 } 1214 1215 static void encode_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner) 1216 { 1217 __be32 *p; 1218 1219 p = reserve_space(xdr, 32); 1220 p = xdr_encode_hyper(p, lowner->clientid); 1221 *p++ = cpu_to_be32(20); 1222 p = xdr_encode_opaque_fixed(p, "lock id:", 8); 1223 *p++ = cpu_to_be32(lowner->s_dev); 1224 xdr_encode_hyper(p, lowner->id); 1225 } 1226 1227 /* 1228 * opcode,type,reclaim,offset,length,new_lock_owner = 32 1229 * open_seqid,open_stateid,lock_seqid,lock_owner.clientid, lock_owner.id = 40 1230 */ 1231 static void encode_lock(struct xdr_stream *xdr, const struct nfs_lock_args *args, struct compound_hdr *hdr) 1232 { 1233 __be32 *p; 1234 1235 p = reserve_space(xdr, 32); 1236 *p++ = cpu_to_be32(OP_LOCK); 1237 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, args->block)); 1238 *p++ = cpu_to_be32(args->reclaim); 1239 p = xdr_encode_hyper(p, args->fl->fl_start); 1240 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl)); 1241 *p = cpu_to_be32(args->new_lock_owner); 1242 if (args->new_lock_owner){ 1243 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE+4); 1244 *p++ = cpu_to_be32(args->open_seqid->sequence->counter); 1245 p = xdr_encode_opaque_fixed(p, args->open_stateid->data, NFS4_STATEID_SIZE); 1246 *p++ = cpu_to_be32(args->lock_seqid->sequence->counter); 1247 encode_lockowner(xdr, &args->lock_owner); 1248 } 1249 else { 1250 p = reserve_space(xdr, NFS4_STATEID_SIZE+4); 1251 p = xdr_encode_opaque_fixed(p, args->lock_stateid->data, NFS4_STATEID_SIZE); 1252 *p = cpu_to_be32(args->lock_seqid->sequence->counter); 1253 } 1254 hdr->nops++; 1255 hdr->replen += decode_lock_maxsz; 1256 } 1257 1258 static void encode_lockt(struct xdr_stream *xdr, const struct nfs_lockt_args *args, struct compound_hdr *hdr) 1259 { 1260 __be32 *p; 1261 1262 p = reserve_space(xdr, 24); 1263 *p++ = cpu_to_be32(OP_LOCKT); 1264 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, 0)); 1265 p = xdr_encode_hyper(p, args->fl->fl_start); 1266 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl)); 1267 encode_lockowner(xdr, &args->lock_owner); 1268 hdr->nops++; 1269 hdr->replen += decode_lockt_maxsz; 1270 } 1271 1272 static void encode_locku(struct xdr_stream *xdr, const struct nfs_locku_args *args, struct compound_hdr *hdr) 1273 { 1274 __be32 *p; 1275 1276 p = reserve_space(xdr, 12+NFS4_STATEID_SIZE+16); 1277 *p++ = cpu_to_be32(OP_LOCKU); 1278 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, 0)); 1279 *p++ = cpu_to_be32(args->seqid->sequence->counter); 1280 p = xdr_encode_opaque_fixed(p, args->stateid->data, NFS4_STATEID_SIZE); 1281 p = xdr_encode_hyper(p, args->fl->fl_start); 1282 xdr_encode_hyper(p, nfs4_lock_length(args->fl)); 1283 hdr->nops++; 1284 hdr->replen += decode_locku_maxsz; 1285 } 1286 1287 static void encode_release_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner, struct compound_hdr *hdr) 1288 { 1289 __be32 *p; 1290 1291 p = reserve_space(xdr, 4); 1292 *p = cpu_to_be32(OP_RELEASE_LOCKOWNER); 1293 encode_lockowner(xdr, lowner); 1294 hdr->nops++; 1295 hdr->replen += decode_release_lockowner_maxsz; 1296 } 1297 1298 static void encode_lookup(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr) 1299 { 1300 int len = name->len; 1301 __be32 *p; 1302 1303 p = reserve_space(xdr, 8 + len); 1304 *p++ = cpu_to_be32(OP_LOOKUP); 1305 xdr_encode_opaque(p, name->name, len); 1306 hdr->nops++; 1307 hdr->replen += decode_lookup_maxsz; 1308 } 1309 1310 static void encode_share_access(struct xdr_stream *xdr, fmode_t fmode) 1311 { 1312 __be32 *p; 1313 1314 p = reserve_space(xdr, 8); 1315 switch (fmode & (FMODE_READ|FMODE_WRITE)) { 1316 case FMODE_READ: 1317 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_READ); 1318 break; 1319 case FMODE_WRITE: 1320 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_WRITE); 1321 break; 1322 case FMODE_READ|FMODE_WRITE: 1323 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_BOTH); 1324 break; 1325 default: 1326 *p++ = cpu_to_be32(0); 1327 } 1328 *p = cpu_to_be32(0); /* for linux, share_deny = 0 always */ 1329 } 1330 1331 static inline void encode_openhdr(struct xdr_stream *xdr, const struct nfs_openargs *arg) 1332 { 1333 __be32 *p; 1334 /* 1335 * opcode 4, seqid 4, share_access 4, share_deny 4, clientid 8, ownerlen 4, 1336 * owner 4 = 32 1337 */ 1338 p = reserve_space(xdr, 8); 1339 *p++ = cpu_to_be32(OP_OPEN); 1340 *p = cpu_to_be32(arg->seqid->sequence->counter); 1341 encode_share_access(xdr, arg->fmode); 1342 p = reserve_space(xdr, 32); 1343 p = xdr_encode_hyper(p, arg->clientid); 1344 *p++ = cpu_to_be32(20); 1345 p = xdr_encode_opaque_fixed(p, "open id:", 8); 1346 *p++ = cpu_to_be32(arg->server->s_dev); 1347 xdr_encode_hyper(p, arg->id); 1348 } 1349 1350 static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_openargs *arg) 1351 { 1352 __be32 *p; 1353 struct nfs_client *clp; 1354 1355 p = reserve_space(xdr, 4); 1356 switch(arg->open_flags & O_EXCL) { 1357 case 0: 1358 *p = cpu_to_be32(NFS4_CREATE_UNCHECKED); 1359 encode_attrs(xdr, arg->u.attrs, arg->server); 1360 break; 1361 default: 1362 clp = arg->server->nfs_client; 1363 if (clp->cl_mvops->minor_version > 0) { 1364 if (nfs4_has_persistent_session(clp)) { 1365 *p = cpu_to_be32(NFS4_CREATE_GUARDED); 1366 encode_attrs(xdr, arg->u.attrs, arg->server); 1367 } else { 1368 struct iattr dummy; 1369 1370 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE4_1); 1371 encode_nfs4_verifier(xdr, &arg->u.verifier); 1372 dummy.ia_valid = 0; 1373 encode_attrs(xdr, &dummy, arg->server); 1374 } 1375 } else { 1376 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE); 1377 encode_nfs4_verifier(xdr, &arg->u.verifier); 1378 } 1379 } 1380 } 1381 1382 static void encode_opentype(struct xdr_stream *xdr, const struct nfs_openargs *arg) 1383 { 1384 __be32 *p; 1385 1386 p = reserve_space(xdr, 4); 1387 switch (arg->open_flags & O_CREAT) { 1388 case 0: 1389 *p = cpu_to_be32(NFS4_OPEN_NOCREATE); 1390 break; 1391 default: 1392 BUG_ON(arg->claim != NFS4_OPEN_CLAIM_NULL); 1393 *p = cpu_to_be32(NFS4_OPEN_CREATE); 1394 encode_createmode(xdr, arg); 1395 } 1396 } 1397 1398 static inline void encode_delegation_type(struct xdr_stream *xdr, fmode_t delegation_type) 1399 { 1400 __be32 *p; 1401 1402 p = reserve_space(xdr, 4); 1403 switch (delegation_type) { 1404 case 0: 1405 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_NONE); 1406 break; 1407 case FMODE_READ: 1408 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_READ); 1409 break; 1410 case FMODE_WRITE|FMODE_READ: 1411 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_WRITE); 1412 break; 1413 default: 1414 BUG(); 1415 } 1416 } 1417 1418 static inline void encode_claim_null(struct xdr_stream *xdr, const struct qstr *name) 1419 { 1420 __be32 *p; 1421 1422 p = reserve_space(xdr, 4); 1423 *p = cpu_to_be32(NFS4_OPEN_CLAIM_NULL); 1424 encode_string(xdr, name->len, name->name); 1425 } 1426 1427 static inline void encode_claim_previous(struct xdr_stream *xdr, fmode_t type) 1428 { 1429 __be32 *p; 1430 1431 p = reserve_space(xdr, 4); 1432 *p = cpu_to_be32(NFS4_OPEN_CLAIM_PREVIOUS); 1433 encode_delegation_type(xdr, type); 1434 } 1435 1436 static inline void encode_claim_delegate_cur(struct xdr_stream *xdr, const struct qstr *name, const nfs4_stateid *stateid) 1437 { 1438 __be32 *p; 1439 1440 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE); 1441 *p++ = cpu_to_be32(NFS4_OPEN_CLAIM_DELEGATE_CUR); 1442 xdr_encode_opaque_fixed(p, stateid->data, NFS4_STATEID_SIZE); 1443 encode_string(xdr, name->len, name->name); 1444 } 1445 1446 static void encode_open(struct xdr_stream *xdr, const struct nfs_openargs *arg, struct compound_hdr *hdr) 1447 { 1448 encode_openhdr(xdr, arg); 1449 encode_opentype(xdr, arg); 1450 switch (arg->claim) { 1451 case NFS4_OPEN_CLAIM_NULL: 1452 encode_claim_null(xdr, arg->name); 1453 break; 1454 case NFS4_OPEN_CLAIM_PREVIOUS: 1455 encode_claim_previous(xdr, arg->u.delegation_type); 1456 break; 1457 case NFS4_OPEN_CLAIM_DELEGATE_CUR: 1458 encode_claim_delegate_cur(xdr, arg->name, &arg->u.delegation); 1459 break; 1460 default: 1461 BUG(); 1462 } 1463 hdr->nops++; 1464 hdr->replen += decode_open_maxsz; 1465 } 1466 1467 static void encode_open_confirm(struct xdr_stream *xdr, const struct nfs_open_confirmargs *arg, struct compound_hdr *hdr) 1468 { 1469 __be32 *p; 1470 1471 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE+4); 1472 *p++ = cpu_to_be32(OP_OPEN_CONFIRM); 1473 p = xdr_encode_opaque_fixed(p, arg->stateid->data, NFS4_STATEID_SIZE); 1474 *p = cpu_to_be32(arg->seqid->sequence->counter); 1475 hdr->nops++; 1476 hdr->replen += decode_open_confirm_maxsz; 1477 } 1478 1479 static void encode_open_downgrade(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr) 1480 { 1481 __be32 *p; 1482 1483 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE+4); 1484 *p++ = cpu_to_be32(OP_OPEN_DOWNGRADE); 1485 p = xdr_encode_opaque_fixed(p, arg->stateid->data, NFS4_STATEID_SIZE); 1486 *p = cpu_to_be32(arg->seqid->sequence->counter); 1487 encode_share_access(xdr, arg->fmode); 1488 hdr->nops++; 1489 hdr->replen += decode_open_downgrade_maxsz; 1490 } 1491 1492 static void 1493 encode_putfh(struct xdr_stream *xdr, const struct nfs_fh *fh, struct compound_hdr *hdr) 1494 { 1495 int len = fh->size; 1496 __be32 *p; 1497 1498 p = reserve_space(xdr, 8 + len); 1499 *p++ = cpu_to_be32(OP_PUTFH); 1500 xdr_encode_opaque(p, fh->data, len); 1501 hdr->nops++; 1502 hdr->replen += decode_putfh_maxsz; 1503 } 1504 1505 static void encode_putrootfh(struct xdr_stream *xdr, struct compound_hdr *hdr) 1506 { 1507 __be32 *p; 1508 1509 p = reserve_space(xdr, 4); 1510 *p = cpu_to_be32(OP_PUTROOTFH); 1511 hdr->nops++; 1512 hdr->replen += decode_putrootfh_maxsz; 1513 } 1514 1515 static void encode_stateid(struct xdr_stream *xdr, const struct nfs_open_context *ctx, const struct nfs_lock_context *l_ctx, int zero_seqid) 1516 { 1517 nfs4_stateid stateid; 1518 __be32 *p; 1519 1520 p = reserve_space(xdr, NFS4_STATEID_SIZE); 1521 if (ctx->state != NULL) { 1522 nfs4_copy_stateid(&stateid, ctx->state, l_ctx->lockowner, l_ctx->pid); 1523 if (zero_seqid) 1524 stateid.stateid.seqid = 0; 1525 xdr_encode_opaque_fixed(p, stateid.data, NFS4_STATEID_SIZE); 1526 } else 1527 xdr_encode_opaque_fixed(p, zero_stateid.data, NFS4_STATEID_SIZE); 1528 } 1529 1530 static void encode_read(struct xdr_stream *xdr, const struct nfs_readargs *args, struct compound_hdr *hdr) 1531 { 1532 __be32 *p; 1533 1534 p = reserve_space(xdr, 4); 1535 *p = cpu_to_be32(OP_READ); 1536 1537 encode_stateid(xdr, args->context, args->lock_context, 1538 hdr->minorversion); 1539 1540 p = reserve_space(xdr, 12); 1541 p = xdr_encode_hyper(p, args->offset); 1542 *p = cpu_to_be32(args->count); 1543 hdr->nops++; 1544 hdr->replen += decode_read_maxsz; 1545 } 1546 1547 static void encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg *readdir, struct rpc_rqst *req, struct compound_hdr *hdr) 1548 { 1549 uint32_t attrs[2] = { 1550 FATTR4_WORD0_RDATTR_ERROR, 1551 FATTR4_WORD1_MOUNTED_ON_FILEID, 1552 }; 1553 uint32_t dircount = readdir->count >> 1; 1554 __be32 *p; 1555 1556 if (readdir->plus) { 1557 attrs[0] |= FATTR4_WORD0_TYPE|FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE| 1558 FATTR4_WORD0_FSID|FATTR4_WORD0_FILEHANDLE|FATTR4_WORD0_FILEID; 1559 attrs[1] |= FATTR4_WORD1_MODE|FATTR4_WORD1_NUMLINKS|FATTR4_WORD1_OWNER| 1560 FATTR4_WORD1_OWNER_GROUP|FATTR4_WORD1_RAWDEV| 1561 FATTR4_WORD1_SPACE_USED|FATTR4_WORD1_TIME_ACCESS| 1562 FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY; 1563 dircount >>= 1; 1564 } 1565 /* Use mounted_on_fileid only if the server supports it */ 1566 if (!(readdir->bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)) 1567 attrs[0] |= FATTR4_WORD0_FILEID; 1568 1569 p = reserve_space(xdr, 12+NFS4_VERIFIER_SIZE+20); 1570 *p++ = cpu_to_be32(OP_READDIR); 1571 p = xdr_encode_hyper(p, readdir->cookie); 1572 p = xdr_encode_opaque_fixed(p, readdir->verifier.data, NFS4_VERIFIER_SIZE); 1573 *p++ = cpu_to_be32(dircount); 1574 *p++ = cpu_to_be32(readdir->count); 1575 *p++ = cpu_to_be32(2); 1576 1577 *p++ = cpu_to_be32(attrs[0] & readdir->bitmask[0]); 1578 *p = cpu_to_be32(attrs[1] & readdir->bitmask[1]); 1579 hdr->nops++; 1580 hdr->replen += decode_readdir_maxsz; 1581 dprintk("%s: cookie = %Lu, verifier = %08x:%08x, bitmap = %08x:%08x\n", 1582 __func__, 1583 (unsigned long long)readdir->cookie, 1584 ((u32 *)readdir->verifier.data)[0], 1585 ((u32 *)readdir->verifier.data)[1], 1586 attrs[0] & readdir->bitmask[0], 1587 attrs[1] & readdir->bitmask[1]); 1588 } 1589 1590 static void encode_readlink(struct xdr_stream *xdr, const struct nfs4_readlink *readlink, struct rpc_rqst *req, struct compound_hdr *hdr) 1591 { 1592 __be32 *p; 1593 1594 p = reserve_space(xdr, 4); 1595 *p = cpu_to_be32(OP_READLINK); 1596 hdr->nops++; 1597 hdr->replen += decode_readlink_maxsz; 1598 } 1599 1600 static void encode_remove(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr) 1601 { 1602 __be32 *p; 1603 1604 p = reserve_space(xdr, 8 + name->len); 1605 *p++ = cpu_to_be32(OP_REMOVE); 1606 xdr_encode_opaque(p, name->name, name->len); 1607 hdr->nops++; 1608 hdr->replen += decode_remove_maxsz; 1609 } 1610 1611 static void encode_rename(struct xdr_stream *xdr, const struct qstr *oldname, const struct qstr *newname, struct compound_hdr *hdr) 1612 { 1613 __be32 *p; 1614 1615 p = reserve_space(xdr, 4); 1616 *p = cpu_to_be32(OP_RENAME); 1617 encode_string(xdr, oldname->len, oldname->name); 1618 encode_string(xdr, newname->len, newname->name); 1619 hdr->nops++; 1620 hdr->replen += decode_rename_maxsz; 1621 } 1622 1623 static void encode_renew(struct xdr_stream *xdr, const struct nfs_client *client_stateid, struct compound_hdr *hdr) 1624 { 1625 __be32 *p; 1626 1627 p = reserve_space(xdr, 12); 1628 *p++ = cpu_to_be32(OP_RENEW); 1629 xdr_encode_hyper(p, client_stateid->cl_clientid); 1630 hdr->nops++; 1631 hdr->replen += decode_renew_maxsz; 1632 } 1633 1634 static void 1635 encode_restorefh(struct xdr_stream *xdr, struct compound_hdr *hdr) 1636 { 1637 __be32 *p; 1638 1639 p = reserve_space(xdr, 4); 1640 *p = cpu_to_be32(OP_RESTOREFH); 1641 hdr->nops++; 1642 hdr->replen += decode_restorefh_maxsz; 1643 } 1644 1645 static void 1646 encode_setacl(struct xdr_stream *xdr, struct nfs_setaclargs *arg, struct compound_hdr *hdr) 1647 { 1648 __be32 *p; 1649 1650 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE); 1651 *p++ = cpu_to_be32(OP_SETATTR); 1652 xdr_encode_opaque_fixed(p, zero_stateid.data, NFS4_STATEID_SIZE); 1653 p = reserve_space(xdr, 2*4); 1654 *p++ = cpu_to_be32(1); 1655 *p = cpu_to_be32(FATTR4_WORD0_ACL); 1656 BUG_ON(arg->acl_len % 4); 1657 p = reserve_space(xdr, 4); 1658 *p = cpu_to_be32(arg->acl_len); 1659 xdr_write_pages(xdr, arg->acl_pages, arg->acl_pgbase, arg->acl_len); 1660 hdr->nops++; 1661 hdr->replen += decode_setacl_maxsz; 1662 } 1663 1664 static void 1665 encode_savefh(struct xdr_stream *xdr, struct compound_hdr *hdr) 1666 { 1667 __be32 *p; 1668 1669 p = reserve_space(xdr, 4); 1670 *p = cpu_to_be32(OP_SAVEFH); 1671 hdr->nops++; 1672 hdr->replen += decode_savefh_maxsz; 1673 } 1674 1675 static void encode_setattr(struct xdr_stream *xdr, const struct nfs_setattrargs *arg, const struct nfs_server *server, struct compound_hdr *hdr) 1676 { 1677 __be32 *p; 1678 1679 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE); 1680 *p++ = cpu_to_be32(OP_SETATTR); 1681 xdr_encode_opaque_fixed(p, arg->stateid.data, NFS4_STATEID_SIZE); 1682 hdr->nops++; 1683 hdr->replen += decode_setattr_maxsz; 1684 encode_attrs(xdr, arg->iap, server); 1685 } 1686 1687 static void encode_setclientid(struct xdr_stream *xdr, const struct nfs4_setclientid *setclientid, struct compound_hdr *hdr) 1688 { 1689 __be32 *p; 1690 1691 p = reserve_space(xdr, 4 + NFS4_VERIFIER_SIZE); 1692 *p++ = cpu_to_be32(OP_SETCLIENTID); 1693 xdr_encode_opaque_fixed(p, setclientid->sc_verifier->data, NFS4_VERIFIER_SIZE); 1694 1695 encode_string(xdr, setclientid->sc_name_len, setclientid->sc_name); 1696 p = reserve_space(xdr, 4); 1697 *p = cpu_to_be32(setclientid->sc_prog); 1698 encode_string(xdr, setclientid->sc_netid_len, setclientid->sc_netid); 1699 encode_string(xdr, setclientid->sc_uaddr_len, setclientid->sc_uaddr); 1700 p = reserve_space(xdr, 4); 1701 *p = cpu_to_be32(setclientid->sc_cb_ident); 1702 hdr->nops++; 1703 hdr->replen += decode_setclientid_maxsz; 1704 } 1705 1706 static void encode_setclientid_confirm(struct xdr_stream *xdr, const struct nfs4_setclientid_res *arg, struct compound_hdr *hdr) 1707 { 1708 __be32 *p; 1709 1710 p = reserve_space(xdr, 12 + NFS4_VERIFIER_SIZE); 1711 *p++ = cpu_to_be32(OP_SETCLIENTID_CONFIRM); 1712 p = xdr_encode_hyper(p, arg->clientid); 1713 xdr_encode_opaque_fixed(p, arg->confirm.data, NFS4_VERIFIER_SIZE); 1714 hdr->nops++; 1715 hdr->replen += decode_setclientid_confirm_maxsz; 1716 } 1717 1718 static void encode_write(struct xdr_stream *xdr, const struct nfs_writeargs *args, struct compound_hdr *hdr) 1719 { 1720 __be32 *p; 1721 1722 p = reserve_space(xdr, 4); 1723 *p = cpu_to_be32(OP_WRITE); 1724 1725 encode_stateid(xdr, args->context, args->lock_context, 1726 hdr->minorversion); 1727 1728 p = reserve_space(xdr, 16); 1729 p = xdr_encode_hyper(p, args->offset); 1730 *p++ = cpu_to_be32(args->stable); 1731 *p = cpu_to_be32(args->count); 1732 1733 xdr_write_pages(xdr, args->pages, args->pgbase, args->count); 1734 hdr->nops++; 1735 hdr->replen += decode_write_maxsz; 1736 } 1737 1738 static void encode_delegreturn(struct xdr_stream *xdr, const nfs4_stateid *stateid, struct compound_hdr *hdr) 1739 { 1740 __be32 *p; 1741 1742 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE); 1743 1744 *p++ = cpu_to_be32(OP_DELEGRETURN); 1745 xdr_encode_opaque_fixed(p, stateid->data, NFS4_STATEID_SIZE); 1746 hdr->nops++; 1747 hdr->replen += decode_delegreturn_maxsz; 1748 } 1749 1750 static void encode_secinfo(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr) 1751 { 1752 int len = name->len; 1753 __be32 *p; 1754 1755 p = reserve_space(xdr, 8 + len); 1756 *p++ = cpu_to_be32(OP_SECINFO); 1757 xdr_encode_opaque(p, name->name, len); 1758 hdr->nops++; 1759 hdr->replen += decode_secinfo_maxsz; 1760 } 1761 1762 #if defined(CONFIG_NFS_V4_1) 1763 /* NFSv4.1 operations */ 1764 static void encode_exchange_id(struct xdr_stream *xdr, 1765 struct nfs41_exchange_id_args *args, 1766 struct compound_hdr *hdr) 1767 { 1768 __be32 *p; 1769 1770 p = reserve_space(xdr, 4 + sizeof(args->verifier->data)); 1771 *p++ = cpu_to_be32(OP_EXCHANGE_ID); 1772 xdr_encode_opaque_fixed(p, args->verifier->data, sizeof(args->verifier->data)); 1773 1774 encode_string(xdr, args->id_len, args->id); 1775 1776 p = reserve_space(xdr, 12); 1777 *p++ = cpu_to_be32(args->flags); 1778 *p++ = cpu_to_be32(0); /* zero length state_protect4_a */ 1779 *p = cpu_to_be32(0); /* zero length implementation id array */ 1780 hdr->nops++; 1781 hdr->replen += decode_exchange_id_maxsz; 1782 } 1783 1784 static void encode_create_session(struct xdr_stream *xdr, 1785 struct nfs41_create_session_args *args, 1786 struct compound_hdr *hdr) 1787 { 1788 __be32 *p; 1789 char machine_name[NFS4_MAX_MACHINE_NAME_LEN]; 1790 uint32_t len; 1791 struct nfs_client *clp = args->client; 1792 u32 max_resp_sz_cached; 1793 1794 /* 1795 * Assumes OPEN is the biggest non-idempotent compound. 1796 * 2 is the verifier. 1797 */ 1798 max_resp_sz_cached = (NFS4_dec_open_sz + RPC_REPHDRSIZE + 1799 RPC_MAX_AUTH_SIZE + 2) * XDR_UNIT; 1800 1801 len = scnprintf(machine_name, sizeof(machine_name), "%s", 1802 clp->cl_ipaddr); 1803 1804 p = reserve_space(xdr, 20 + 2*28 + 20 + len + 12); 1805 *p++ = cpu_to_be32(OP_CREATE_SESSION); 1806 p = xdr_encode_hyper(p, clp->cl_clientid); 1807 *p++ = cpu_to_be32(clp->cl_seqid); /*Sequence id */ 1808 *p++ = cpu_to_be32(args->flags); /*flags */ 1809 1810 /* Fore Channel */ 1811 *p++ = cpu_to_be32(0); /* header padding size */ 1812 *p++ = cpu_to_be32(args->fc_attrs.max_rqst_sz); /* max req size */ 1813 *p++ = cpu_to_be32(args->fc_attrs.max_resp_sz); /* max resp size */ 1814 *p++ = cpu_to_be32(max_resp_sz_cached); /* Max resp sz cached */ 1815 *p++ = cpu_to_be32(args->fc_attrs.max_ops); /* max operations */ 1816 *p++ = cpu_to_be32(args->fc_attrs.max_reqs); /* max requests */ 1817 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */ 1818 1819 /* Back Channel */ 1820 *p++ = cpu_to_be32(0); /* header padding size */ 1821 *p++ = cpu_to_be32(args->bc_attrs.max_rqst_sz); /* max req size */ 1822 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz); /* max resp size */ 1823 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz_cached); /* Max resp sz cached */ 1824 *p++ = cpu_to_be32(args->bc_attrs.max_ops); /* max operations */ 1825 *p++ = cpu_to_be32(args->bc_attrs.max_reqs); /* max requests */ 1826 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */ 1827 1828 *p++ = cpu_to_be32(args->cb_program); /* cb_program */ 1829 *p++ = cpu_to_be32(1); 1830 *p++ = cpu_to_be32(RPC_AUTH_UNIX); /* auth_sys */ 1831 1832 /* authsys_parms rfc1831 */ 1833 *p++ = cpu_to_be32((u32)clp->cl_boot_time.tv_nsec); /* stamp */ 1834 p = xdr_encode_opaque(p, machine_name, len); 1835 *p++ = cpu_to_be32(0); /* UID */ 1836 *p++ = cpu_to_be32(0); /* GID */ 1837 *p = cpu_to_be32(0); /* No more gids */ 1838 hdr->nops++; 1839 hdr->replen += decode_create_session_maxsz; 1840 } 1841 1842 static void encode_destroy_session(struct xdr_stream *xdr, 1843 struct nfs4_session *session, 1844 struct compound_hdr *hdr) 1845 { 1846 __be32 *p; 1847 p = reserve_space(xdr, 4 + NFS4_MAX_SESSIONID_LEN); 1848 *p++ = cpu_to_be32(OP_DESTROY_SESSION); 1849 xdr_encode_opaque_fixed(p, session->sess_id.data, NFS4_MAX_SESSIONID_LEN); 1850 hdr->nops++; 1851 hdr->replen += decode_destroy_session_maxsz; 1852 } 1853 1854 static void encode_reclaim_complete(struct xdr_stream *xdr, 1855 struct nfs41_reclaim_complete_args *args, 1856 struct compound_hdr *hdr) 1857 { 1858 __be32 *p; 1859 1860 p = reserve_space(xdr, 8); 1861 *p++ = cpu_to_be32(OP_RECLAIM_COMPLETE); 1862 *p++ = cpu_to_be32(args->one_fs); 1863 hdr->nops++; 1864 hdr->replen += decode_reclaim_complete_maxsz; 1865 } 1866 #endif /* CONFIG_NFS_V4_1 */ 1867 1868 static void encode_sequence(struct xdr_stream *xdr, 1869 const struct nfs4_sequence_args *args, 1870 struct compound_hdr *hdr) 1871 { 1872 #if defined(CONFIG_NFS_V4_1) 1873 struct nfs4_session *session = args->sa_session; 1874 struct nfs4_slot_table *tp; 1875 struct nfs4_slot *slot; 1876 __be32 *p; 1877 1878 if (!session) 1879 return; 1880 1881 tp = &session->fc_slot_table; 1882 1883 WARN_ON(args->sa_slotid == NFS4_MAX_SLOT_TABLE); 1884 slot = tp->slots + args->sa_slotid; 1885 1886 p = reserve_space(xdr, 4 + NFS4_MAX_SESSIONID_LEN + 16); 1887 *p++ = cpu_to_be32(OP_SEQUENCE); 1888 1889 /* 1890 * Sessionid + seqid + slotid + max slotid + cache_this 1891 */ 1892 dprintk("%s: sessionid=%u:%u:%u:%u seqid=%d slotid=%d " 1893 "max_slotid=%d cache_this=%d\n", 1894 __func__, 1895 ((u32 *)session->sess_id.data)[0], 1896 ((u32 *)session->sess_id.data)[1], 1897 ((u32 *)session->sess_id.data)[2], 1898 ((u32 *)session->sess_id.data)[3], 1899 slot->seq_nr, args->sa_slotid, 1900 tp->highest_used_slotid, args->sa_cache_this); 1901 p = xdr_encode_opaque_fixed(p, session->sess_id.data, NFS4_MAX_SESSIONID_LEN); 1902 *p++ = cpu_to_be32(slot->seq_nr); 1903 *p++ = cpu_to_be32(args->sa_slotid); 1904 *p++ = cpu_to_be32(tp->highest_used_slotid); 1905 *p = cpu_to_be32(args->sa_cache_this); 1906 hdr->nops++; 1907 hdr->replen += decode_sequence_maxsz; 1908 #endif /* CONFIG_NFS_V4_1 */ 1909 } 1910 1911 #ifdef CONFIG_NFS_V4_1 1912 static void 1913 encode_getdevicelist(struct xdr_stream *xdr, 1914 const struct nfs4_getdevicelist_args *args, 1915 struct compound_hdr *hdr) 1916 { 1917 __be32 *p; 1918 nfs4_verifier dummy = { 1919 .data = "dummmmmy", 1920 }; 1921 1922 p = reserve_space(xdr, 20); 1923 *p++ = cpu_to_be32(OP_GETDEVICELIST); 1924 *p++ = cpu_to_be32(args->layoutclass); 1925 *p++ = cpu_to_be32(NFS4_PNFS_GETDEVLIST_MAXNUM); 1926 xdr_encode_hyper(p, 0ULL); /* cookie */ 1927 encode_nfs4_verifier(xdr, &dummy); 1928 hdr->nops++; 1929 hdr->replen += decode_getdevicelist_maxsz; 1930 } 1931 1932 static void 1933 encode_getdeviceinfo(struct xdr_stream *xdr, 1934 const struct nfs4_getdeviceinfo_args *args, 1935 struct compound_hdr *hdr) 1936 { 1937 __be32 *p; 1938 1939 p = reserve_space(xdr, 16 + NFS4_DEVICEID4_SIZE); 1940 *p++ = cpu_to_be32(OP_GETDEVICEINFO); 1941 p = xdr_encode_opaque_fixed(p, args->pdev->dev_id.data, 1942 NFS4_DEVICEID4_SIZE); 1943 *p++ = cpu_to_be32(args->pdev->layout_type); 1944 *p++ = cpu_to_be32(args->pdev->pglen); /* gdia_maxcount */ 1945 *p++ = cpu_to_be32(0); /* bitmap length 0 */ 1946 hdr->nops++; 1947 hdr->replen += decode_getdeviceinfo_maxsz; 1948 } 1949 1950 static void 1951 encode_layoutget(struct xdr_stream *xdr, 1952 const struct nfs4_layoutget_args *args, 1953 struct compound_hdr *hdr) 1954 { 1955 __be32 *p; 1956 1957 p = reserve_space(xdr, 44 + NFS4_STATEID_SIZE); 1958 *p++ = cpu_to_be32(OP_LAYOUTGET); 1959 *p++ = cpu_to_be32(0); /* Signal layout available */ 1960 *p++ = cpu_to_be32(args->type); 1961 *p++ = cpu_to_be32(args->range.iomode); 1962 p = xdr_encode_hyper(p, args->range.offset); 1963 p = xdr_encode_hyper(p, args->range.length); 1964 p = xdr_encode_hyper(p, args->minlength); 1965 p = xdr_encode_opaque_fixed(p, &args->stateid.data, NFS4_STATEID_SIZE); 1966 *p = cpu_to_be32(args->maxcount); 1967 1968 dprintk("%s: 1st type:0x%x iomode:%d off:%lu len:%lu mc:%d\n", 1969 __func__, 1970 args->type, 1971 args->range.iomode, 1972 (unsigned long)args->range.offset, 1973 (unsigned long)args->range.length, 1974 args->maxcount); 1975 hdr->nops++; 1976 hdr->replen += decode_layoutget_maxsz; 1977 } 1978 1979 static int 1980 encode_layoutcommit(struct xdr_stream *xdr, 1981 struct inode *inode, 1982 const struct nfs4_layoutcommit_args *args, 1983 struct compound_hdr *hdr) 1984 { 1985 __be32 *p; 1986 1987 dprintk("%s: lbw: %llu type: %d\n", __func__, args->lastbytewritten, 1988 NFS_SERVER(args->inode)->pnfs_curr_ld->id); 1989 1990 p = reserve_space(xdr, 44 + NFS4_STATEID_SIZE); 1991 *p++ = cpu_to_be32(OP_LAYOUTCOMMIT); 1992 /* Only whole file layouts */ 1993 p = xdr_encode_hyper(p, 0); /* offset */ 1994 p = xdr_encode_hyper(p, args->lastbytewritten + 1); /* length */ 1995 *p++ = cpu_to_be32(0); /* reclaim */ 1996 p = xdr_encode_opaque_fixed(p, args->stateid.data, NFS4_STATEID_SIZE); 1997 *p++ = cpu_to_be32(1); /* newoffset = TRUE */ 1998 p = xdr_encode_hyper(p, args->lastbytewritten); 1999 *p++ = cpu_to_be32(0); /* Never send time_modify_changed */ 2000 *p++ = cpu_to_be32(NFS_SERVER(args->inode)->pnfs_curr_ld->id);/* type */ 2001 2002 if (NFS_SERVER(inode)->pnfs_curr_ld->encode_layoutcommit) 2003 NFS_SERVER(inode)->pnfs_curr_ld->encode_layoutcommit( 2004 NFS_I(inode)->layout, xdr, args); 2005 else { 2006 p = reserve_space(xdr, 4); 2007 *p = cpu_to_be32(0); /* no layout-type payload */ 2008 } 2009 2010 hdr->nops++; 2011 hdr->replen += decode_layoutcommit_maxsz; 2012 return 0; 2013 } 2014 2015 static void 2016 encode_layoutreturn(struct xdr_stream *xdr, 2017 const struct nfs4_layoutreturn_args *args, 2018 struct compound_hdr *hdr) 2019 { 2020 __be32 *p; 2021 2022 p = reserve_space(xdr, 20); 2023 *p++ = cpu_to_be32(OP_LAYOUTRETURN); 2024 *p++ = cpu_to_be32(0); /* reclaim. always 0 for now */ 2025 *p++ = cpu_to_be32(args->layout_type); 2026 *p++ = cpu_to_be32(IOMODE_ANY); 2027 *p = cpu_to_be32(RETURN_FILE); 2028 p = reserve_space(xdr, 16 + NFS4_STATEID_SIZE); 2029 p = xdr_encode_hyper(p, 0); 2030 p = xdr_encode_hyper(p, NFS4_MAX_UINT64); 2031 spin_lock(&args->inode->i_lock); 2032 xdr_encode_opaque_fixed(p, &args->stateid.data, NFS4_STATEID_SIZE); 2033 spin_unlock(&args->inode->i_lock); 2034 if (NFS_SERVER(args->inode)->pnfs_curr_ld->encode_layoutreturn) { 2035 NFS_SERVER(args->inode)->pnfs_curr_ld->encode_layoutreturn( 2036 NFS_I(args->inode)->layout, xdr, args); 2037 } else { 2038 p = reserve_space(xdr, 4); 2039 *p = cpu_to_be32(0); 2040 } 2041 hdr->nops++; 2042 hdr->replen += decode_layoutreturn_maxsz; 2043 } 2044 2045 static int 2046 encode_secinfo_no_name(struct xdr_stream *xdr, 2047 const struct nfs41_secinfo_no_name_args *args, 2048 struct compound_hdr *hdr) 2049 { 2050 __be32 *p; 2051 p = reserve_space(xdr, 8); 2052 *p++ = cpu_to_be32(OP_SECINFO_NO_NAME); 2053 *p++ = cpu_to_be32(args->style); 2054 hdr->nops++; 2055 hdr->replen += decode_secinfo_no_name_maxsz; 2056 return 0; 2057 } 2058 2059 static void encode_test_stateid(struct xdr_stream *xdr, 2060 struct nfs41_test_stateid_args *args, 2061 struct compound_hdr *hdr) 2062 { 2063 __be32 *p; 2064 2065 p = reserve_space(xdr, 8 + NFS4_STATEID_SIZE); 2066 *p++ = cpu_to_be32(OP_TEST_STATEID); 2067 *p++ = cpu_to_be32(1); 2068 xdr_encode_opaque_fixed(p, args->stateid->data, NFS4_STATEID_SIZE); 2069 hdr->nops++; 2070 hdr->replen += decode_test_stateid_maxsz; 2071 } 2072 2073 static void encode_free_stateid(struct xdr_stream *xdr, 2074 struct nfs41_free_stateid_args *args, 2075 struct compound_hdr *hdr) 2076 { 2077 __be32 *p; 2078 p = reserve_space(xdr, 4 + NFS4_STATEID_SIZE); 2079 *p++ = cpu_to_be32(OP_FREE_STATEID); 2080 xdr_encode_opaque_fixed(p, args->stateid->data, NFS4_STATEID_SIZE); 2081 hdr->nops++; 2082 hdr->replen += decode_free_stateid_maxsz; 2083 } 2084 #endif /* CONFIG_NFS_V4_1 */ 2085 2086 /* 2087 * END OF "GENERIC" ENCODE ROUTINES. 2088 */ 2089 2090 static u32 nfs4_xdr_minorversion(const struct nfs4_sequence_args *args) 2091 { 2092 #if defined(CONFIG_NFS_V4_1) 2093 if (args->sa_session) 2094 return args->sa_session->clp->cl_mvops->minor_version; 2095 #endif /* CONFIG_NFS_V4_1 */ 2096 return 0; 2097 } 2098 2099 /* 2100 * Encode an ACCESS request 2101 */ 2102 static void nfs4_xdr_enc_access(struct rpc_rqst *req, struct xdr_stream *xdr, 2103 const struct nfs4_accessargs *args) 2104 { 2105 struct compound_hdr hdr = { 2106 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2107 }; 2108 2109 encode_compound_hdr(xdr, req, &hdr); 2110 encode_sequence(xdr, &args->seq_args, &hdr); 2111 encode_putfh(xdr, args->fh, &hdr); 2112 encode_access(xdr, args->access, &hdr); 2113 encode_getfattr(xdr, args->bitmask, &hdr); 2114 encode_nops(&hdr); 2115 } 2116 2117 /* 2118 * Encode LOOKUP request 2119 */ 2120 static void nfs4_xdr_enc_lookup(struct rpc_rqst *req, struct xdr_stream *xdr, 2121 const struct nfs4_lookup_arg *args) 2122 { 2123 struct compound_hdr hdr = { 2124 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2125 }; 2126 2127 encode_compound_hdr(xdr, req, &hdr); 2128 encode_sequence(xdr, &args->seq_args, &hdr); 2129 encode_putfh(xdr, args->dir_fh, &hdr); 2130 encode_lookup(xdr, args->name, &hdr); 2131 encode_getfh(xdr, &hdr); 2132 encode_getfattr(xdr, args->bitmask, &hdr); 2133 encode_nops(&hdr); 2134 } 2135 2136 /* 2137 * Encode LOOKUP_ROOT request 2138 */ 2139 static void nfs4_xdr_enc_lookup_root(struct rpc_rqst *req, 2140 struct xdr_stream *xdr, 2141 const struct nfs4_lookup_root_arg *args) 2142 { 2143 struct compound_hdr hdr = { 2144 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2145 }; 2146 2147 encode_compound_hdr(xdr, req, &hdr); 2148 encode_sequence(xdr, &args->seq_args, &hdr); 2149 encode_putrootfh(xdr, &hdr); 2150 encode_getfh(xdr, &hdr); 2151 encode_getfattr(xdr, args->bitmask, &hdr); 2152 encode_nops(&hdr); 2153 } 2154 2155 /* 2156 * Encode REMOVE request 2157 */ 2158 static void nfs4_xdr_enc_remove(struct rpc_rqst *req, struct xdr_stream *xdr, 2159 const struct nfs_removeargs *args) 2160 { 2161 struct compound_hdr hdr = { 2162 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2163 }; 2164 2165 encode_compound_hdr(xdr, req, &hdr); 2166 encode_sequence(xdr, &args->seq_args, &hdr); 2167 encode_putfh(xdr, args->fh, &hdr); 2168 encode_remove(xdr, &args->name, &hdr); 2169 encode_getfattr(xdr, args->bitmask, &hdr); 2170 encode_nops(&hdr); 2171 } 2172 2173 /* 2174 * Encode RENAME request 2175 */ 2176 static void nfs4_xdr_enc_rename(struct rpc_rqst *req, struct xdr_stream *xdr, 2177 const struct nfs_renameargs *args) 2178 { 2179 struct compound_hdr hdr = { 2180 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2181 }; 2182 2183 encode_compound_hdr(xdr, req, &hdr); 2184 encode_sequence(xdr, &args->seq_args, &hdr); 2185 encode_putfh(xdr, args->old_dir, &hdr); 2186 encode_savefh(xdr, &hdr); 2187 encode_putfh(xdr, args->new_dir, &hdr); 2188 encode_rename(xdr, args->old_name, args->new_name, &hdr); 2189 encode_getfattr(xdr, args->bitmask, &hdr); 2190 encode_restorefh(xdr, &hdr); 2191 encode_getfattr(xdr, args->bitmask, &hdr); 2192 encode_nops(&hdr); 2193 } 2194 2195 /* 2196 * Encode LINK request 2197 */ 2198 static void nfs4_xdr_enc_link(struct rpc_rqst *req, struct xdr_stream *xdr, 2199 const struct nfs4_link_arg *args) 2200 { 2201 struct compound_hdr hdr = { 2202 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2203 }; 2204 2205 encode_compound_hdr(xdr, req, &hdr); 2206 encode_sequence(xdr, &args->seq_args, &hdr); 2207 encode_putfh(xdr, args->fh, &hdr); 2208 encode_savefh(xdr, &hdr); 2209 encode_putfh(xdr, args->dir_fh, &hdr); 2210 encode_link(xdr, args->name, &hdr); 2211 encode_getfattr(xdr, args->bitmask, &hdr); 2212 encode_restorefh(xdr, &hdr); 2213 encode_getfattr(xdr, args->bitmask, &hdr); 2214 encode_nops(&hdr); 2215 } 2216 2217 /* 2218 * Encode CREATE request 2219 */ 2220 static void nfs4_xdr_enc_create(struct rpc_rqst *req, struct xdr_stream *xdr, 2221 const struct nfs4_create_arg *args) 2222 { 2223 struct compound_hdr hdr = { 2224 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2225 }; 2226 2227 encode_compound_hdr(xdr, req, &hdr); 2228 encode_sequence(xdr, &args->seq_args, &hdr); 2229 encode_putfh(xdr, args->dir_fh, &hdr); 2230 encode_savefh(xdr, &hdr); 2231 encode_create(xdr, args, &hdr); 2232 encode_getfh(xdr, &hdr); 2233 encode_getfattr(xdr, args->bitmask, &hdr); 2234 encode_restorefh(xdr, &hdr); 2235 encode_getfattr(xdr, args->bitmask, &hdr); 2236 encode_nops(&hdr); 2237 } 2238 2239 /* 2240 * Encode SYMLINK request 2241 */ 2242 static void nfs4_xdr_enc_symlink(struct rpc_rqst *req, struct xdr_stream *xdr, 2243 const struct nfs4_create_arg *args) 2244 { 2245 nfs4_xdr_enc_create(req, xdr, args); 2246 } 2247 2248 /* 2249 * Encode GETATTR request 2250 */ 2251 static void nfs4_xdr_enc_getattr(struct rpc_rqst *req, struct xdr_stream *xdr, 2252 const struct nfs4_getattr_arg *args) 2253 { 2254 struct compound_hdr hdr = { 2255 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2256 }; 2257 2258 encode_compound_hdr(xdr, req, &hdr); 2259 encode_sequence(xdr, &args->seq_args, &hdr); 2260 encode_putfh(xdr, args->fh, &hdr); 2261 encode_getfattr(xdr, args->bitmask, &hdr); 2262 encode_nops(&hdr); 2263 } 2264 2265 /* 2266 * Encode a CLOSE request 2267 */ 2268 static void nfs4_xdr_enc_close(struct rpc_rqst *req, struct xdr_stream *xdr, 2269 struct nfs_closeargs *args) 2270 { 2271 struct compound_hdr hdr = { 2272 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2273 }; 2274 2275 encode_compound_hdr(xdr, req, &hdr); 2276 encode_sequence(xdr, &args->seq_args, &hdr); 2277 encode_putfh(xdr, args->fh, &hdr); 2278 encode_close(xdr, args, &hdr); 2279 encode_getfattr(xdr, args->bitmask, &hdr); 2280 encode_nops(&hdr); 2281 } 2282 2283 /* 2284 * Encode an OPEN request 2285 */ 2286 static void nfs4_xdr_enc_open(struct rpc_rqst *req, struct xdr_stream *xdr, 2287 struct nfs_openargs *args) 2288 { 2289 struct compound_hdr hdr = { 2290 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2291 }; 2292 2293 encode_compound_hdr(xdr, req, &hdr); 2294 encode_sequence(xdr, &args->seq_args, &hdr); 2295 encode_putfh(xdr, args->fh, &hdr); 2296 encode_savefh(xdr, &hdr); 2297 encode_open(xdr, args, &hdr); 2298 encode_getfh(xdr, &hdr); 2299 encode_getfattr(xdr, args->bitmask, &hdr); 2300 encode_restorefh(xdr, &hdr); 2301 encode_getfattr(xdr, args->bitmask, &hdr); 2302 encode_nops(&hdr); 2303 } 2304 2305 /* 2306 * Encode an OPEN_CONFIRM request 2307 */ 2308 static void nfs4_xdr_enc_open_confirm(struct rpc_rqst *req, 2309 struct xdr_stream *xdr, 2310 struct nfs_open_confirmargs *args) 2311 { 2312 struct compound_hdr hdr = { 2313 .nops = 0, 2314 }; 2315 2316 encode_compound_hdr(xdr, req, &hdr); 2317 encode_putfh(xdr, args->fh, &hdr); 2318 encode_open_confirm(xdr, args, &hdr); 2319 encode_nops(&hdr); 2320 } 2321 2322 /* 2323 * Encode an OPEN request with no attributes. 2324 */ 2325 static void nfs4_xdr_enc_open_noattr(struct rpc_rqst *req, 2326 struct xdr_stream *xdr, 2327 struct nfs_openargs *args) 2328 { 2329 struct compound_hdr hdr = { 2330 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2331 }; 2332 2333 encode_compound_hdr(xdr, req, &hdr); 2334 encode_sequence(xdr, &args->seq_args, &hdr); 2335 encode_putfh(xdr, args->fh, &hdr); 2336 encode_open(xdr, args, &hdr); 2337 encode_getfattr(xdr, args->bitmask, &hdr); 2338 encode_nops(&hdr); 2339 } 2340 2341 /* 2342 * Encode an OPEN_DOWNGRADE request 2343 */ 2344 static void nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req, 2345 struct xdr_stream *xdr, 2346 struct nfs_closeargs *args) 2347 { 2348 struct compound_hdr hdr = { 2349 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2350 }; 2351 2352 encode_compound_hdr(xdr, req, &hdr); 2353 encode_sequence(xdr, &args->seq_args, &hdr); 2354 encode_putfh(xdr, args->fh, &hdr); 2355 encode_open_downgrade(xdr, args, &hdr); 2356 encode_getfattr(xdr, args->bitmask, &hdr); 2357 encode_nops(&hdr); 2358 } 2359 2360 /* 2361 * Encode a LOCK request 2362 */ 2363 static void nfs4_xdr_enc_lock(struct rpc_rqst *req, struct xdr_stream *xdr, 2364 struct nfs_lock_args *args) 2365 { 2366 struct compound_hdr hdr = { 2367 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2368 }; 2369 2370 encode_compound_hdr(xdr, req, &hdr); 2371 encode_sequence(xdr, &args->seq_args, &hdr); 2372 encode_putfh(xdr, args->fh, &hdr); 2373 encode_lock(xdr, args, &hdr); 2374 encode_nops(&hdr); 2375 } 2376 2377 /* 2378 * Encode a LOCKT request 2379 */ 2380 static void nfs4_xdr_enc_lockt(struct rpc_rqst *req, struct xdr_stream *xdr, 2381 struct nfs_lockt_args *args) 2382 { 2383 struct compound_hdr hdr = { 2384 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2385 }; 2386 2387 encode_compound_hdr(xdr, req, &hdr); 2388 encode_sequence(xdr, &args->seq_args, &hdr); 2389 encode_putfh(xdr, args->fh, &hdr); 2390 encode_lockt(xdr, args, &hdr); 2391 encode_nops(&hdr); 2392 } 2393 2394 /* 2395 * Encode a LOCKU request 2396 */ 2397 static void nfs4_xdr_enc_locku(struct rpc_rqst *req, struct xdr_stream *xdr, 2398 struct nfs_locku_args *args) 2399 { 2400 struct compound_hdr hdr = { 2401 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2402 }; 2403 2404 encode_compound_hdr(xdr, req, &hdr); 2405 encode_sequence(xdr, &args->seq_args, &hdr); 2406 encode_putfh(xdr, args->fh, &hdr); 2407 encode_locku(xdr, args, &hdr); 2408 encode_nops(&hdr); 2409 } 2410 2411 static void nfs4_xdr_enc_release_lockowner(struct rpc_rqst *req, 2412 struct xdr_stream *xdr, 2413 struct nfs_release_lockowner_args *args) 2414 { 2415 struct compound_hdr hdr = { 2416 .minorversion = 0, 2417 }; 2418 2419 encode_compound_hdr(xdr, req, &hdr); 2420 encode_release_lockowner(xdr, &args->lock_owner, &hdr); 2421 encode_nops(&hdr); 2422 } 2423 2424 /* 2425 * Encode a READLINK request 2426 */ 2427 static void nfs4_xdr_enc_readlink(struct rpc_rqst *req, struct xdr_stream *xdr, 2428 const struct nfs4_readlink *args) 2429 { 2430 struct compound_hdr hdr = { 2431 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2432 }; 2433 2434 encode_compound_hdr(xdr, req, &hdr); 2435 encode_sequence(xdr, &args->seq_args, &hdr); 2436 encode_putfh(xdr, args->fh, &hdr); 2437 encode_readlink(xdr, args, req, &hdr); 2438 2439 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages, 2440 args->pgbase, args->pglen); 2441 encode_nops(&hdr); 2442 } 2443 2444 /* 2445 * Encode a READDIR request 2446 */ 2447 static void nfs4_xdr_enc_readdir(struct rpc_rqst *req, struct xdr_stream *xdr, 2448 const struct nfs4_readdir_arg *args) 2449 { 2450 struct compound_hdr hdr = { 2451 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2452 }; 2453 2454 encode_compound_hdr(xdr, req, &hdr); 2455 encode_sequence(xdr, &args->seq_args, &hdr); 2456 encode_putfh(xdr, args->fh, &hdr); 2457 encode_readdir(xdr, args, req, &hdr); 2458 2459 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages, 2460 args->pgbase, args->count); 2461 dprintk("%s: inlined page args = (%u, %p, %u, %u)\n", 2462 __func__, hdr.replen << 2, args->pages, 2463 args->pgbase, args->count); 2464 encode_nops(&hdr); 2465 } 2466 2467 /* 2468 * Encode a READ request 2469 */ 2470 static void nfs4_xdr_enc_read(struct rpc_rqst *req, struct xdr_stream *xdr, 2471 struct nfs_readargs *args) 2472 { 2473 struct compound_hdr hdr = { 2474 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2475 }; 2476 2477 encode_compound_hdr(xdr, req, &hdr); 2478 encode_sequence(xdr, &args->seq_args, &hdr); 2479 encode_putfh(xdr, args->fh, &hdr); 2480 encode_read(xdr, args, &hdr); 2481 2482 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, 2483 args->pages, args->pgbase, args->count); 2484 req->rq_rcv_buf.flags |= XDRBUF_READ; 2485 encode_nops(&hdr); 2486 } 2487 2488 /* 2489 * Encode an SETATTR request 2490 */ 2491 static void nfs4_xdr_enc_setattr(struct rpc_rqst *req, struct xdr_stream *xdr, 2492 struct nfs_setattrargs *args) 2493 { 2494 struct compound_hdr hdr = { 2495 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2496 }; 2497 2498 encode_compound_hdr(xdr, req, &hdr); 2499 encode_sequence(xdr, &args->seq_args, &hdr); 2500 encode_putfh(xdr, args->fh, &hdr); 2501 encode_setattr(xdr, args, args->server, &hdr); 2502 encode_getfattr(xdr, args->bitmask, &hdr); 2503 encode_nops(&hdr); 2504 } 2505 2506 /* 2507 * Encode a GETACL request 2508 */ 2509 static void nfs4_xdr_enc_getacl(struct rpc_rqst *req, struct xdr_stream *xdr, 2510 struct nfs_getaclargs *args) 2511 { 2512 struct compound_hdr hdr = { 2513 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2514 }; 2515 uint32_t replen; 2516 2517 encode_compound_hdr(xdr, req, &hdr); 2518 encode_sequence(xdr, &args->seq_args, &hdr); 2519 encode_putfh(xdr, args->fh, &hdr); 2520 replen = hdr.replen + op_decode_hdr_maxsz + nfs4_fattr_bitmap_maxsz + 1; 2521 encode_getattr_two(xdr, FATTR4_WORD0_ACL, 0, &hdr); 2522 2523 xdr_inline_pages(&req->rq_rcv_buf, replen << 2, 2524 args->acl_pages, args->acl_pgbase, args->acl_len); 2525 encode_nops(&hdr); 2526 } 2527 2528 /* 2529 * Encode a WRITE request 2530 */ 2531 static void nfs4_xdr_enc_write(struct rpc_rqst *req, struct xdr_stream *xdr, 2532 struct nfs_writeargs *args) 2533 { 2534 struct compound_hdr hdr = { 2535 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2536 }; 2537 2538 encode_compound_hdr(xdr, req, &hdr); 2539 encode_sequence(xdr, &args->seq_args, &hdr); 2540 encode_putfh(xdr, args->fh, &hdr); 2541 encode_write(xdr, args, &hdr); 2542 req->rq_snd_buf.flags |= XDRBUF_WRITE; 2543 if (args->bitmask) 2544 encode_getfattr(xdr, args->bitmask, &hdr); 2545 encode_nops(&hdr); 2546 } 2547 2548 /* 2549 * a COMMIT request 2550 */ 2551 static void nfs4_xdr_enc_commit(struct rpc_rqst *req, struct xdr_stream *xdr, 2552 struct nfs_writeargs *args) 2553 { 2554 struct compound_hdr hdr = { 2555 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2556 }; 2557 2558 encode_compound_hdr(xdr, req, &hdr); 2559 encode_sequence(xdr, &args->seq_args, &hdr); 2560 encode_putfh(xdr, args->fh, &hdr); 2561 encode_commit(xdr, args, &hdr); 2562 if (args->bitmask) 2563 encode_getfattr(xdr, args->bitmask, &hdr); 2564 encode_nops(&hdr); 2565 } 2566 2567 /* 2568 * FSINFO request 2569 */ 2570 static void nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr, 2571 struct nfs4_fsinfo_arg *args) 2572 { 2573 struct compound_hdr hdr = { 2574 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2575 }; 2576 2577 encode_compound_hdr(xdr, req, &hdr); 2578 encode_sequence(xdr, &args->seq_args, &hdr); 2579 encode_putfh(xdr, args->fh, &hdr); 2580 encode_fsinfo(xdr, args->bitmask, &hdr); 2581 encode_nops(&hdr); 2582 } 2583 2584 /* 2585 * a PATHCONF request 2586 */ 2587 static void nfs4_xdr_enc_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr, 2588 const struct nfs4_pathconf_arg *args) 2589 { 2590 struct compound_hdr hdr = { 2591 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2592 }; 2593 2594 encode_compound_hdr(xdr, req, &hdr); 2595 encode_sequence(xdr, &args->seq_args, &hdr); 2596 encode_putfh(xdr, args->fh, &hdr); 2597 encode_getattr_one(xdr, args->bitmask[0] & nfs4_pathconf_bitmap[0], 2598 &hdr); 2599 encode_nops(&hdr); 2600 } 2601 2602 /* 2603 * a STATFS request 2604 */ 2605 static void nfs4_xdr_enc_statfs(struct rpc_rqst *req, struct xdr_stream *xdr, 2606 const struct nfs4_statfs_arg *args) 2607 { 2608 struct compound_hdr hdr = { 2609 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2610 }; 2611 2612 encode_compound_hdr(xdr, req, &hdr); 2613 encode_sequence(xdr, &args->seq_args, &hdr); 2614 encode_putfh(xdr, args->fh, &hdr); 2615 encode_getattr_two(xdr, args->bitmask[0] & nfs4_statfs_bitmap[0], 2616 args->bitmask[1] & nfs4_statfs_bitmap[1], &hdr); 2617 encode_nops(&hdr); 2618 } 2619 2620 /* 2621 * GETATTR_BITMAP request 2622 */ 2623 static void nfs4_xdr_enc_server_caps(struct rpc_rqst *req, 2624 struct xdr_stream *xdr, 2625 struct nfs4_server_caps_arg *args) 2626 { 2627 struct compound_hdr hdr = { 2628 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2629 }; 2630 2631 encode_compound_hdr(xdr, req, &hdr); 2632 encode_sequence(xdr, &args->seq_args, &hdr); 2633 encode_putfh(xdr, args->fhandle, &hdr); 2634 encode_getattr_one(xdr, FATTR4_WORD0_SUPPORTED_ATTRS| 2635 FATTR4_WORD0_LINK_SUPPORT| 2636 FATTR4_WORD0_SYMLINK_SUPPORT| 2637 FATTR4_WORD0_ACLSUPPORT, &hdr); 2638 encode_nops(&hdr); 2639 } 2640 2641 /* 2642 * a RENEW request 2643 */ 2644 static void nfs4_xdr_enc_renew(struct rpc_rqst *req, struct xdr_stream *xdr, 2645 struct nfs_client *clp) 2646 { 2647 struct compound_hdr hdr = { 2648 .nops = 0, 2649 }; 2650 2651 encode_compound_hdr(xdr, req, &hdr); 2652 encode_renew(xdr, clp, &hdr); 2653 encode_nops(&hdr); 2654 } 2655 2656 /* 2657 * a SETCLIENTID request 2658 */ 2659 static void nfs4_xdr_enc_setclientid(struct rpc_rqst *req, 2660 struct xdr_stream *xdr, 2661 struct nfs4_setclientid *sc) 2662 { 2663 struct compound_hdr hdr = { 2664 .nops = 0, 2665 }; 2666 2667 encode_compound_hdr(xdr, req, &hdr); 2668 encode_setclientid(xdr, sc, &hdr); 2669 encode_nops(&hdr); 2670 } 2671 2672 /* 2673 * a SETCLIENTID_CONFIRM request 2674 */ 2675 static void nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req, 2676 struct xdr_stream *xdr, 2677 struct nfs4_setclientid_res *arg) 2678 { 2679 struct compound_hdr hdr = { 2680 .nops = 0, 2681 }; 2682 const u32 lease_bitmap[3] = { FATTR4_WORD0_LEASE_TIME }; 2683 2684 encode_compound_hdr(xdr, req, &hdr); 2685 encode_setclientid_confirm(xdr, arg, &hdr); 2686 encode_putrootfh(xdr, &hdr); 2687 encode_fsinfo(xdr, lease_bitmap, &hdr); 2688 encode_nops(&hdr); 2689 } 2690 2691 /* 2692 * DELEGRETURN request 2693 */ 2694 static void nfs4_xdr_enc_delegreturn(struct rpc_rqst *req, 2695 struct xdr_stream *xdr, 2696 const struct nfs4_delegreturnargs *args) 2697 { 2698 struct compound_hdr hdr = { 2699 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2700 }; 2701 2702 encode_compound_hdr(xdr, req, &hdr); 2703 encode_sequence(xdr, &args->seq_args, &hdr); 2704 encode_putfh(xdr, args->fhandle, &hdr); 2705 encode_delegreturn(xdr, args->stateid, &hdr); 2706 encode_getfattr(xdr, args->bitmask, &hdr); 2707 encode_nops(&hdr); 2708 } 2709 2710 /* 2711 * Encode FS_LOCATIONS request 2712 */ 2713 static void nfs4_xdr_enc_fs_locations(struct rpc_rqst *req, 2714 struct xdr_stream *xdr, 2715 struct nfs4_fs_locations_arg *args) 2716 { 2717 struct compound_hdr hdr = { 2718 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2719 }; 2720 uint32_t replen; 2721 2722 encode_compound_hdr(xdr, req, &hdr); 2723 encode_sequence(xdr, &args->seq_args, &hdr); 2724 encode_putfh(xdr, args->dir_fh, &hdr); 2725 encode_lookup(xdr, args->name, &hdr); 2726 replen = hdr.replen; /* get the attribute into args->page */ 2727 encode_fs_locations(xdr, args->bitmask, &hdr); 2728 2729 xdr_inline_pages(&req->rq_rcv_buf, replen << 2, &args->page, 2730 0, PAGE_SIZE); 2731 encode_nops(&hdr); 2732 } 2733 2734 /* 2735 * Encode SECINFO request 2736 */ 2737 static void nfs4_xdr_enc_secinfo(struct rpc_rqst *req, 2738 struct xdr_stream *xdr, 2739 struct nfs4_secinfo_arg *args) 2740 { 2741 struct compound_hdr hdr = { 2742 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2743 }; 2744 2745 encode_compound_hdr(xdr, req, &hdr); 2746 encode_sequence(xdr, &args->seq_args, &hdr); 2747 encode_putfh(xdr, args->dir_fh, &hdr); 2748 encode_secinfo(xdr, args->name, &hdr); 2749 encode_nops(&hdr); 2750 } 2751 2752 #if defined(CONFIG_NFS_V4_1) 2753 /* 2754 * EXCHANGE_ID request 2755 */ 2756 static void nfs4_xdr_enc_exchange_id(struct rpc_rqst *req, 2757 struct xdr_stream *xdr, 2758 struct nfs41_exchange_id_args *args) 2759 { 2760 struct compound_hdr hdr = { 2761 .minorversion = args->client->cl_mvops->minor_version, 2762 }; 2763 2764 encode_compound_hdr(xdr, req, &hdr); 2765 encode_exchange_id(xdr, args, &hdr); 2766 encode_nops(&hdr); 2767 } 2768 2769 /* 2770 * a CREATE_SESSION request 2771 */ 2772 static void nfs4_xdr_enc_create_session(struct rpc_rqst *req, 2773 struct xdr_stream *xdr, 2774 struct nfs41_create_session_args *args) 2775 { 2776 struct compound_hdr hdr = { 2777 .minorversion = args->client->cl_mvops->minor_version, 2778 }; 2779 2780 encode_compound_hdr(xdr, req, &hdr); 2781 encode_create_session(xdr, args, &hdr); 2782 encode_nops(&hdr); 2783 } 2784 2785 /* 2786 * a DESTROY_SESSION request 2787 */ 2788 static void nfs4_xdr_enc_destroy_session(struct rpc_rqst *req, 2789 struct xdr_stream *xdr, 2790 struct nfs4_session *session) 2791 { 2792 struct compound_hdr hdr = { 2793 .minorversion = session->clp->cl_mvops->minor_version, 2794 }; 2795 2796 encode_compound_hdr(xdr, req, &hdr); 2797 encode_destroy_session(xdr, session, &hdr); 2798 encode_nops(&hdr); 2799 } 2800 2801 /* 2802 * a SEQUENCE request 2803 */ 2804 static void nfs4_xdr_enc_sequence(struct rpc_rqst *req, struct xdr_stream *xdr, 2805 struct nfs4_sequence_args *args) 2806 { 2807 struct compound_hdr hdr = { 2808 .minorversion = nfs4_xdr_minorversion(args), 2809 }; 2810 2811 encode_compound_hdr(xdr, req, &hdr); 2812 encode_sequence(xdr, args, &hdr); 2813 encode_nops(&hdr); 2814 } 2815 2816 /* 2817 * a GET_LEASE_TIME request 2818 */ 2819 static void nfs4_xdr_enc_get_lease_time(struct rpc_rqst *req, 2820 struct xdr_stream *xdr, 2821 struct nfs4_get_lease_time_args *args) 2822 { 2823 struct compound_hdr hdr = { 2824 .minorversion = nfs4_xdr_minorversion(&args->la_seq_args), 2825 }; 2826 const u32 lease_bitmap[3] = { FATTR4_WORD0_LEASE_TIME }; 2827 2828 encode_compound_hdr(xdr, req, &hdr); 2829 encode_sequence(xdr, &args->la_seq_args, &hdr); 2830 encode_putrootfh(xdr, &hdr); 2831 encode_fsinfo(xdr, lease_bitmap, &hdr); 2832 encode_nops(&hdr); 2833 } 2834 2835 /* 2836 * a RECLAIM_COMPLETE request 2837 */ 2838 static void nfs4_xdr_enc_reclaim_complete(struct rpc_rqst *req, 2839 struct xdr_stream *xdr, 2840 struct nfs41_reclaim_complete_args *args) 2841 { 2842 struct compound_hdr hdr = { 2843 .minorversion = nfs4_xdr_minorversion(&args->seq_args) 2844 }; 2845 2846 encode_compound_hdr(xdr, req, &hdr); 2847 encode_sequence(xdr, &args->seq_args, &hdr); 2848 encode_reclaim_complete(xdr, args, &hdr); 2849 encode_nops(&hdr); 2850 } 2851 2852 /* 2853 * Encode GETDEVICELIST request 2854 */ 2855 static void nfs4_xdr_enc_getdevicelist(struct rpc_rqst *req, 2856 struct xdr_stream *xdr, 2857 struct nfs4_getdevicelist_args *args) 2858 { 2859 struct compound_hdr hdr = { 2860 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2861 }; 2862 2863 encode_compound_hdr(xdr, req, &hdr); 2864 encode_sequence(xdr, &args->seq_args, &hdr); 2865 encode_putfh(xdr, args->fh, &hdr); 2866 encode_getdevicelist(xdr, args, &hdr); 2867 encode_nops(&hdr); 2868 } 2869 2870 /* 2871 * Encode GETDEVICEINFO request 2872 */ 2873 static void nfs4_xdr_enc_getdeviceinfo(struct rpc_rqst *req, 2874 struct xdr_stream *xdr, 2875 struct nfs4_getdeviceinfo_args *args) 2876 { 2877 struct compound_hdr hdr = { 2878 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2879 }; 2880 2881 encode_compound_hdr(xdr, req, &hdr); 2882 encode_sequence(xdr, &args->seq_args, &hdr); 2883 encode_getdeviceinfo(xdr, args, &hdr); 2884 2885 /* set up reply kvec. Subtract notification bitmap max size (2) 2886 * so that notification bitmap is put in xdr_buf tail */ 2887 xdr_inline_pages(&req->rq_rcv_buf, (hdr.replen - 2) << 2, 2888 args->pdev->pages, args->pdev->pgbase, 2889 args->pdev->pglen); 2890 2891 encode_nops(&hdr); 2892 } 2893 2894 /* 2895 * Encode LAYOUTGET request 2896 */ 2897 static void nfs4_xdr_enc_layoutget(struct rpc_rqst *req, 2898 struct xdr_stream *xdr, 2899 struct nfs4_layoutget_args *args) 2900 { 2901 struct compound_hdr hdr = { 2902 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2903 }; 2904 2905 encode_compound_hdr(xdr, req, &hdr); 2906 encode_sequence(xdr, &args->seq_args, &hdr); 2907 encode_putfh(xdr, NFS_FH(args->inode), &hdr); 2908 encode_layoutget(xdr, args, &hdr); 2909 2910 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, 2911 args->layout.pages, 0, args->layout.pglen); 2912 2913 encode_nops(&hdr); 2914 } 2915 2916 /* 2917 * Encode LAYOUTCOMMIT request 2918 */ 2919 static void nfs4_xdr_enc_layoutcommit(struct rpc_rqst *req, 2920 struct xdr_stream *xdr, 2921 struct nfs4_layoutcommit_args *args) 2922 { 2923 struct nfs4_layoutcommit_data *data = 2924 container_of(args, struct nfs4_layoutcommit_data, args); 2925 struct compound_hdr hdr = { 2926 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2927 }; 2928 2929 encode_compound_hdr(xdr, req, &hdr); 2930 encode_sequence(xdr, &args->seq_args, &hdr); 2931 encode_putfh(xdr, NFS_FH(args->inode), &hdr); 2932 encode_layoutcommit(xdr, data->args.inode, args, &hdr); 2933 encode_getfattr(xdr, args->bitmask, &hdr); 2934 encode_nops(&hdr); 2935 } 2936 2937 /* 2938 * Encode LAYOUTRETURN request 2939 */ 2940 static void nfs4_xdr_enc_layoutreturn(struct rpc_rqst *req, 2941 struct xdr_stream *xdr, 2942 struct nfs4_layoutreturn_args *args) 2943 { 2944 struct compound_hdr hdr = { 2945 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2946 }; 2947 2948 encode_compound_hdr(xdr, req, &hdr); 2949 encode_sequence(xdr, &args->seq_args, &hdr); 2950 encode_putfh(xdr, NFS_FH(args->inode), &hdr); 2951 encode_layoutreturn(xdr, args, &hdr); 2952 encode_nops(&hdr); 2953 } 2954 2955 /* 2956 * Encode SECINFO_NO_NAME request 2957 */ 2958 static int nfs4_xdr_enc_secinfo_no_name(struct rpc_rqst *req, 2959 struct xdr_stream *xdr, 2960 struct nfs41_secinfo_no_name_args *args) 2961 { 2962 struct compound_hdr hdr = { 2963 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2964 }; 2965 2966 encode_compound_hdr(xdr, req, &hdr); 2967 encode_sequence(xdr, &args->seq_args, &hdr); 2968 encode_putrootfh(xdr, &hdr); 2969 encode_secinfo_no_name(xdr, args, &hdr); 2970 encode_nops(&hdr); 2971 return 0; 2972 } 2973 2974 /* 2975 * Encode TEST_STATEID request 2976 */ 2977 static void nfs4_xdr_enc_test_stateid(struct rpc_rqst *req, 2978 struct xdr_stream *xdr, 2979 struct nfs41_test_stateid_args *args) 2980 { 2981 struct compound_hdr hdr = { 2982 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2983 }; 2984 2985 encode_compound_hdr(xdr, req, &hdr); 2986 encode_sequence(xdr, &args->seq_args, &hdr); 2987 encode_test_stateid(xdr, args, &hdr); 2988 encode_nops(&hdr); 2989 } 2990 2991 /* 2992 * Encode FREE_STATEID request 2993 */ 2994 static void nfs4_xdr_enc_free_stateid(struct rpc_rqst *req, 2995 struct xdr_stream *xdr, 2996 struct nfs41_free_stateid_args *args) 2997 { 2998 struct compound_hdr hdr = { 2999 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 3000 }; 3001 3002 encode_compound_hdr(xdr, req, &hdr); 3003 encode_sequence(xdr, &args->seq_args, &hdr); 3004 encode_free_stateid(xdr, args, &hdr); 3005 encode_nops(&hdr); 3006 } 3007 #endif /* CONFIG_NFS_V4_1 */ 3008 3009 static void print_overflow_msg(const char *func, const struct xdr_stream *xdr) 3010 { 3011 dprintk("nfs: %s: prematurely hit end of receive buffer. " 3012 "Remaining buffer length is %tu words.\n", 3013 func, xdr->end - xdr->p); 3014 } 3015 3016 static int decode_opaque_inline(struct xdr_stream *xdr, unsigned int *len, char **string) 3017 { 3018 __be32 *p; 3019 3020 p = xdr_inline_decode(xdr, 4); 3021 if (unlikely(!p)) 3022 goto out_overflow; 3023 *len = be32_to_cpup(p); 3024 p = xdr_inline_decode(xdr, *len); 3025 if (unlikely(!p)) 3026 goto out_overflow; 3027 *string = (char *)p; 3028 return 0; 3029 out_overflow: 3030 print_overflow_msg(__func__, xdr); 3031 return -EIO; 3032 } 3033 3034 static int decode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr) 3035 { 3036 __be32 *p; 3037 3038 p = xdr_inline_decode(xdr, 8); 3039 if (unlikely(!p)) 3040 goto out_overflow; 3041 hdr->status = be32_to_cpup(p++); 3042 hdr->taglen = be32_to_cpup(p); 3043 3044 p = xdr_inline_decode(xdr, hdr->taglen + 4); 3045 if (unlikely(!p)) 3046 goto out_overflow; 3047 hdr->tag = (char *)p; 3048 p += XDR_QUADLEN(hdr->taglen); 3049 hdr->nops = be32_to_cpup(p); 3050 if (unlikely(hdr->nops < 1)) 3051 return nfs4_stat_to_errno(hdr->status); 3052 return 0; 3053 out_overflow: 3054 print_overflow_msg(__func__, xdr); 3055 return -EIO; 3056 } 3057 3058 static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected) 3059 { 3060 __be32 *p; 3061 uint32_t opnum; 3062 int32_t nfserr; 3063 3064 p = xdr_inline_decode(xdr, 8); 3065 if (unlikely(!p)) 3066 goto out_overflow; 3067 opnum = be32_to_cpup(p++); 3068 if (opnum != expected) { 3069 dprintk("nfs: Server returned operation" 3070 " %d but we issued a request for %d\n", 3071 opnum, expected); 3072 return -EIO; 3073 } 3074 nfserr = be32_to_cpup(p); 3075 if (nfserr != NFS_OK) 3076 return nfs4_stat_to_errno(nfserr); 3077 return 0; 3078 out_overflow: 3079 print_overflow_msg(__func__, xdr); 3080 return -EIO; 3081 } 3082 3083 /* Dummy routine */ 3084 static int decode_ace(struct xdr_stream *xdr, void *ace, struct nfs_client *clp) 3085 { 3086 __be32 *p; 3087 unsigned int strlen; 3088 char *str; 3089 3090 p = xdr_inline_decode(xdr, 12); 3091 if (likely(p)) 3092 return decode_opaque_inline(xdr, &strlen, &str); 3093 print_overflow_msg(__func__, xdr); 3094 return -EIO; 3095 } 3096 3097 static int decode_attr_bitmap(struct xdr_stream *xdr, uint32_t *bitmap) 3098 { 3099 uint32_t bmlen; 3100 __be32 *p; 3101 3102 p = xdr_inline_decode(xdr, 4); 3103 if (unlikely(!p)) 3104 goto out_overflow; 3105 bmlen = be32_to_cpup(p); 3106 3107 bitmap[0] = bitmap[1] = bitmap[2] = 0; 3108 p = xdr_inline_decode(xdr, (bmlen << 2)); 3109 if (unlikely(!p)) 3110 goto out_overflow; 3111 if (bmlen > 0) { 3112 bitmap[0] = be32_to_cpup(p++); 3113 if (bmlen > 1) { 3114 bitmap[1] = be32_to_cpup(p++); 3115 if (bmlen > 2) 3116 bitmap[2] = be32_to_cpup(p); 3117 } 3118 } 3119 return 0; 3120 out_overflow: 3121 print_overflow_msg(__func__, xdr); 3122 return -EIO; 3123 } 3124 3125 static inline int decode_attr_length(struct xdr_stream *xdr, uint32_t *attrlen, __be32 **savep) 3126 { 3127 __be32 *p; 3128 3129 p = xdr_inline_decode(xdr, 4); 3130 if (unlikely(!p)) 3131 goto out_overflow; 3132 *attrlen = be32_to_cpup(p); 3133 *savep = xdr->p; 3134 return 0; 3135 out_overflow: 3136 print_overflow_msg(__func__, xdr); 3137 return -EIO; 3138 } 3139 3140 static int decode_attr_supported(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *bitmask) 3141 { 3142 if (likely(bitmap[0] & FATTR4_WORD0_SUPPORTED_ATTRS)) { 3143 int ret; 3144 ret = decode_attr_bitmap(xdr, bitmask); 3145 if (unlikely(ret < 0)) 3146 return ret; 3147 bitmap[0] &= ~FATTR4_WORD0_SUPPORTED_ATTRS; 3148 } else 3149 bitmask[0] = bitmask[1] = bitmask[2] = 0; 3150 dprintk("%s: bitmask=%08x:%08x:%08x\n", __func__, 3151 bitmask[0], bitmask[1], bitmask[2]); 3152 return 0; 3153 } 3154 3155 static int decode_attr_type(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *type) 3156 { 3157 __be32 *p; 3158 int ret = 0; 3159 3160 *type = 0; 3161 if (unlikely(bitmap[0] & (FATTR4_WORD0_TYPE - 1U))) 3162 return -EIO; 3163 if (likely(bitmap[0] & FATTR4_WORD0_TYPE)) { 3164 p = xdr_inline_decode(xdr, 4); 3165 if (unlikely(!p)) 3166 goto out_overflow; 3167 *type = be32_to_cpup(p); 3168 if (*type < NF4REG || *type > NF4NAMEDATTR) { 3169 dprintk("%s: bad type %d\n", __func__, *type); 3170 return -EIO; 3171 } 3172 bitmap[0] &= ~FATTR4_WORD0_TYPE; 3173 ret = NFS_ATTR_FATTR_TYPE; 3174 } 3175 dprintk("%s: type=0%o\n", __func__, nfs_type2fmt[*type]); 3176 return ret; 3177 out_overflow: 3178 print_overflow_msg(__func__, xdr); 3179 return -EIO; 3180 } 3181 3182 static int decode_attr_change(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *change) 3183 { 3184 __be32 *p; 3185 int ret = 0; 3186 3187 *change = 0; 3188 if (unlikely(bitmap[0] & (FATTR4_WORD0_CHANGE - 1U))) 3189 return -EIO; 3190 if (likely(bitmap[0] & FATTR4_WORD0_CHANGE)) { 3191 p = xdr_inline_decode(xdr, 8); 3192 if (unlikely(!p)) 3193 goto out_overflow; 3194 xdr_decode_hyper(p, change); 3195 bitmap[0] &= ~FATTR4_WORD0_CHANGE; 3196 ret = NFS_ATTR_FATTR_CHANGE; 3197 } 3198 dprintk("%s: change attribute=%Lu\n", __func__, 3199 (unsigned long long)*change); 3200 return ret; 3201 out_overflow: 3202 print_overflow_msg(__func__, xdr); 3203 return -EIO; 3204 } 3205 3206 static int decode_attr_size(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *size) 3207 { 3208 __be32 *p; 3209 int ret = 0; 3210 3211 *size = 0; 3212 if (unlikely(bitmap[0] & (FATTR4_WORD0_SIZE - 1U))) 3213 return -EIO; 3214 if (likely(bitmap[0] & FATTR4_WORD0_SIZE)) { 3215 p = xdr_inline_decode(xdr, 8); 3216 if (unlikely(!p)) 3217 goto out_overflow; 3218 xdr_decode_hyper(p, size); 3219 bitmap[0] &= ~FATTR4_WORD0_SIZE; 3220 ret = NFS_ATTR_FATTR_SIZE; 3221 } 3222 dprintk("%s: file size=%Lu\n", __func__, (unsigned long long)*size); 3223 return ret; 3224 out_overflow: 3225 print_overflow_msg(__func__, xdr); 3226 return -EIO; 3227 } 3228 3229 static int decode_attr_link_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) 3230 { 3231 __be32 *p; 3232 3233 *res = 0; 3234 if (unlikely(bitmap[0] & (FATTR4_WORD0_LINK_SUPPORT - 1U))) 3235 return -EIO; 3236 if (likely(bitmap[0] & FATTR4_WORD0_LINK_SUPPORT)) { 3237 p = xdr_inline_decode(xdr, 4); 3238 if (unlikely(!p)) 3239 goto out_overflow; 3240 *res = be32_to_cpup(p); 3241 bitmap[0] &= ~FATTR4_WORD0_LINK_SUPPORT; 3242 } 3243 dprintk("%s: link support=%s\n", __func__, *res == 0 ? "false" : "true"); 3244 return 0; 3245 out_overflow: 3246 print_overflow_msg(__func__, xdr); 3247 return -EIO; 3248 } 3249 3250 static int decode_attr_symlink_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) 3251 { 3252 __be32 *p; 3253 3254 *res = 0; 3255 if (unlikely(bitmap[0] & (FATTR4_WORD0_SYMLINK_SUPPORT - 1U))) 3256 return -EIO; 3257 if (likely(bitmap[0] & FATTR4_WORD0_SYMLINK_SUPPORT)) { 3258 p = xdr_inline_decode(xdr, 4); 3259 if (unlikely(!p)) 3260 goto out_overflow; 3261 *res = be32_to_cpup(p); 3262 bitmap[0] &= ~FATTR4_WORD0_SYMLINK_SUPPORT; 3263 } 3264 dprintk("%s: symlink support=%s\n", __func__, *res == 0 ? "false" : "true"); 3265 return 0; 3266 out_overflow: 3267 print_overflow_msg(__func__, xdr); 3268 return -EIO; 3269 } 3270 3271 static int decode_attr_fsid(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fsid *fsid) 3272 { 3273 __be32 *p; 3274 int ret = 0; 3275 3276 fsid->major = 0; 3277 fsid->minor = 0; 3278 if (unlikely(bitmap[0] & (FATTR4_WORD0_FSID - 1U))) 3279 return -EIO; 3280 if (likely(bitmap[0] & FATTR4_WORD0_FSID)) { 3281 p = xdr_inline_decode(xdr, 16); 3282 if (unlikely(!p)) 3283 goto out_overflow; 3284 p = xdr_decode_hyper(p, &fsid->major); 3285 xdr_decode_hyper(p, &fsid->minor); 3286 bitmap[0] &= ~FATTR4_WORD0_FSID; 3287 ret = NFS_ATTR_FATTR_FSID; 3288 } 3289 dprintk("%s: fsid=(0x%Lx/0x%Lx)\n", __func__, 3290 (unsigned long long)fsid->major, 3291 (unsigned long long)fsid->minor); 3292 return ret; 3293 out_overflow: 3294 print_overflow_msg(__func__, xdr); 3295 return -EIO; 3296 } 3297 3298 static int decode_attr_lease_time(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) 3299 { 3300 __be32 *p; 3301 3302 *res = 60; 3303 if (unlikely(bitmap[0] & (FATTR4_WORD0_LEASE_TIME - 1U))) 3304 return -EIO; 3305 if (likely(bitmap[0] & FATTR4_WORD0_LEASE_TIME)) { 3306 p = xdr_inline_decode(xdr, 4); 3307 if (unlikely(!p)) 3308 goto out_overflow; 3309 *res = be32_to_cpup(p); 3310 bitmap[0] &= ~FATTR4_WORD0_LEASE_TIME; 3311 } 3312 dprintk("%s: file size=%u\n", __func__, (unsigned int)*res); 3313 return 0; 3314 out_overflow: 3315 print_overflow_msg(__func__, xdr); 3316 return -EIO; 3317 } 3318 3319 static int decode_attr_error(struct xdr_stream *xdr, uint32_t *bitmap, int32_t *res) 3320 { 3321 __be32 *p; 3322 3323 if (unlikely(bitmap[0] & (FATTR4_WORD0_RDATTR_ERROR - 1U))) 3324 return -EIO; 3325 if (likely(bitmap[0] & FATTR4_WORD0_RDATTR_ERROR)) { 3326 p = xdr_inline_decode(xdr, 4); 3327 if (unlikely(!p)) 3328 goto out_overflow; 3329 bitmap[0] &= ~FATTR4_WORD0_RDATTR_ERROR; 3330 *res = -be32_to_cpup(p); 3331 } 3332 return 0; 3333 out_overflow: 3334 print_overflow_msg(__func__, xdr); 3335 return -EIO; 3336 } 3337 3338 static int decode_attr_filehandle(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fh *fh) 3339 { 3340 __be32 *p; 3341 int len; 3342 3343 if (fh != NULL) 3344 memset(fh, 0, sizeof(*fh)); 3345 3346 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEHANDLE - 1U))) 3347 return -EIO; 3348 if (likely(bitmap[0] & FATTR4_WORD0_FILEHANDLE)) { 3349 p = xdr_inline_decode(xdr, 4); 3350 if (unlikely(!p)) 3351 goto out_overflow; 3352 len = be32_to_cpup(p); 3353 if (len > NFS4_FHSIZE) 3354 return -EIO; 3355 p = xdr_inline_decode(xdr, len); 3356 if (unlikely(!p)) 3357 goto out_overflow; 3358 if (fh != NULL) { 3359 memcpy(fh->data, p, len); 3360 fh->size = len; 3361 } 3362 bitmap[0] &= ~FATTR4_WORD0_FILEHANDLE; 3363 } 3364 return 0; 3365 out_overflow: 3366 print_overflow_msg(__func__, xdr); 3367 return -EIO; 3368 } 3369 3370 static int decode_attr_aclsupport(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) 3371 { 3372 __be32 *p; 3373 3374 *res = ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL; 3375 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACLSUPPORT - 1U))) 3376 return -EIO; 3377 if (likely(bitmap[0] & FATTR4_WORD0_ACLSUPPORT)) { 3378 p = xdr_inline_decode(xdr, 4); 3379 if (unlikely(!p)) 3380 goto out_overflow; 3381 *res = be32_to_cpup(p); 3382 bitmap[0] &= ~FATTR4_WORD0_ACLSUPPORT; 3383 } 3384 dprintk("%s: ACLs supported=%u\n", __func__, (unsigned int)*res); 3385 return 0; 3386 out_overflow: 3387 print_overflow_msg(__func__, xdr); 3388 return -EIO; 3389 } 3390 3391 static int decode_attr_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid) 3392 { 3393 __be32 *p; 3394 int ret = 0; 3395 3396 *fileid = 0; 3397 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEID - 1U))) 3398 return -EIO; 3399 if (likely(bitmap[0] & FATTR4_WORD0_FILEID)) { 3400 p = xdr_inline_decode(xdr, 8); 3401 if (unlikely(!p)) 3402 goto out_overflow; 3403 xdr_decode_hyper(p, fileid); 3404 bitmap[0] &= ~FATTR4_WORD0_FILEID; 3405 ret = NFS_ATTR_FATTR_FILEID; 3406 } 3407 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid); 3408 return ret; 3409 out_overflow: 3410 print_overflow_msg(__func__, xdr); 3411 return -EIO; 3412 } 3413 3414 static int decode_attr_mounted_on_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid) 3415 { 3416 __be32 *p; 3417 int ret = 0; 3418 3419 *fileid = 0; 3420 if (unlikely(bitmap[1] & (FATTR4_WORD1_MOUNTED_ON_FILEID - 1U))) 3421 return -EIO; 3422 if (likely(bitmap[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)) { 3423 p = xdr_inline_decode(xdr, 8); 3424 if (unlikely(!p)) 3425 goto out_overflow; 3426 xdr_decode_hyper(p, fileid); 3427 bitmap[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID; 3428 ret = NFS_ATTR_FATTR_MOUNTED_ON_FILEID; 3429 } 3430 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid); 3431 return ret; 3432 out_overflow: 3433 print_overflow_msg(__func__, xdr); 3434 return -EIO; 3435 } 3436 3437 static int decode_attr_files_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 3438 { 3439 __be32 *p; 3440 int status = 0; 3441 3442 *res = 0; 3443 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_AVAIL - 1U))) 3444 return -EIO; 3445 if (likely(bitmap[0] & FATTR4_WORD0_FILES_AVAIL)) { 3446 p = xdr_inline_decode(xdr, 8); 3447 if (unlikely(!p)) 3448 goto out_overflow; 3449 xdr_decode_hyper(p, res); 3450 bitmap[0] &= ~FATTR4_WORD0_FILES_AVAIL; 3451 } 3452 dprintk("%s: files avail=%Lu\n", __func__, (unsigned long long)*res); 3453 return status; 3454 out_overflow: 3455 print_overflow_msg(__func__, xdr); 3456 return -EIO; 3457 } 3458 3459 static int decode_attr_files_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 3460 { 3461 __be32 *p; 3462 int status = 0; 3463 3464 *res = 0; 3465 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_FREE - 1U))) 3466 return -EIO; 3467 if (likely(bitmap[0] & FATTR4_WORD0_FILES_FREE)) { 3468 p = xdr_inline_decode(xdr, 8); 3469 if (unlikely(!p)) 3470 goto out_overflow; 3471 xdr_decode_hyper(p, res); 3472 bitmap[0] &= ~FATTR4_WORD0_FILES_FREE; 3473 } 3474 dprintk("%s: files free=%Lu\n", __func__, (unsigned long long)*res); 3475 return status; 3476 out_overflow: 3477 print_overflow_msg(__func__, xdr); 3478 return -EIO; 3479 } 3480 3481 static int decode_attr_files_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 3482 { 3483 __be32 *p; 3484 int status = 0; 3485 3486 *res = 0; 3487 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_TOTAL - 1U))) 3488 return -EIO; 3489 if (likely(bitmap[0] & FATTR4_WORD0_FILES_TOTAL)) { 3490 p = xdr_inline_decode(xdr, 8); 3491 if (unlikely(!p)) 3492 goto out_overflow; 3493 xdr_decode_hyper(p, res); 3494 bitmap[0] &= ~FATTR4_WORD0_FILES_TOTAL; 3495 } 3496 dprintk("%s: files total=%Lu\n", __func__, (unsigned long long)*res); 3497 return status; 3498 out_overflow: 3499 print_overflow_msg(__func__, xdr); 3500 return -EIO; 3501 } 3502 3503 static int decode_pathname(struct xdr_stream *xdr, struct nfs4_pathname *path) 3504 { 3505 u32 n; 3506 __be32 *p; 3507 int status = 0; 3508 3509 p = xdr_inline_decode(xdr, 4); 3510 if (unlikely(!p)) 3511 goto out_overflow; 3512 n = be32_to_cpup(p); 3513 if (n == 0) 3514 goto root_path; 3515 dprintk("path "); 3516 path->ncomponents = 0; 3517 while (path->ncomponents < n) { 3518 struct nfs4_string *component = &path->components[path->ncomponents]; 3519 status = decode_opaque_inline(xdr, &component->len, &component->data); 3520 if (unlikely(status != 0)) 3521 goto out_eio; 3522 if (path->ncomponents != n) 3523 dprintk("/"); 3524 dprintk("%s", component->data); 3525 if (path->ncomponents < NFS4_PATHNAME_MAXCOMPONENTS) 3526 path->ncomponents++; 3527 else { 3528 dprintk("cannot parse %d components in path\n", n); 3529 goto out_eio; 3530 } 3531 } 3532 out: 3533 dprintk("\n"); 3534 return status; 3535 root_path: 3536 /* a root pathname is sent as a zero component4 */ 3537 path->ncomponents = 1; 3538 path->components[0].len=0; 3539 path->components[0].data=NULL; 3540 dprintk("path /\n"); 3541 goto out; 3542 out_eio: 3543 dprintk(" status %d", status); 3544 status = -EIO; 3545 goto out; 3546 out_overflow: 3547 print_overflow_msg(__func__, xdr); 3548 return -EIO; 3549 } 3550 3551 static int decode_attr_fs_locations(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_fs_locations *res) 3552 { 3553 int n; 3554 __be32 *p; 3555 int status = -EIO; 3556 3557 if (unlikely(bitmap[0] & (FATTR4_WORD0_FS_LOCATIONS -1U))) 3558 goto out; 3559 status = 0; 3560 if (unlikely(!(bitmap[0] & FATTR4_WORD0_FS_LOCATIONS))) 3561 goto out; 3562 dprintk("%s: fsroot ", __func__); 3563 status = decode_pathname(xdr, &res->fs_path); 3564 if (unlikely(status != 0)) 3565 goto out; 3566 p = xdr_inline_decode(xdr, 4); 3567 if (unlikely(!p)) 3568 goto out_overflow; 3569 n = be32_to_cpup(p); 3570 if (n <= 0) 3571 goto out_eio; 3572 res->nlocations = 0; 3573 while (res->nlocations < n) { 3574 u32 m; 3575 struct nfs4_fs_location *loc = &res->locations[res->nlocations]; 3576 3577 p = xdr_inline_decode(xdr, 4); 3578 if (unlikely(!p)) 3579 goto out_overflow; 3580 m = be32_to_cpup(p); 3581 3582 loc->nservers = 0; 3583 dprintk("%s: servers ", __func__); 3584 while (loc->nservers < m) { 3585 struct nfs4_string *server = &loc->servers[loc->nservers]; 3586 status = decode_opaque_inline(xdr, &server->len, &server->data); 3587 if (unlikely(status != 0)) 3588 goto out_eio; 3589 dprintk("%s ", server->data); 3590 if (loc->nservers < NFS4_FS_LOCATION_MAXSERVERS) 3591 loc->nservers++; 3592 else { 3593 unsigned int i; 3594 dprintk("%s: using first %u of %u servers " 3595 "returned for location %u\n", 3596 __func__, 3597 NFS4_FS_LOCATION_MAXSERVERS, 3598 m, res->nlocations); 3599 for (i = loc->nservers; i < m; i++) { 3600 unsigned int len; 3601 char *data; 3602 status = decode_opaque_inline(xdr, &len, &data); 3603 if (unlikely(status != 0)) 3604 goto out_eio; 3605 } 3606 } 3607 } 3608 status = decode_pathname(xdr, &loc->rootpath); 3609 if (unlikely(status != 0)) 3610 goto out_eio; 3611 if (res->nlocations < NFS4_FS_LOCATIONS_MAXENTRIES) 3612 res->nlocations++; 3613 } 3614 if (res->nlocations != 0) 3615 status = NFS_ATTR_FATTR_V4_REFERRAL; 3616 out: 3617 dprintk("%s: fs_locations done, error = %d\n", __func__, status); 3618 return status; 3619 out_overflow: 3620 print_overflow_msg(__func__, xdr); 3621 out_eio: 3622 status = -EIO; 3623 goto out; 3624 } 3625 3626 static int decode_attr_maxfilesize(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 3627 { 3628 __be32 *p; 3629 int status = 0; 3630 3631 *res = 0; 3632 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXFILESIZE - 1U))) 3633 return -EIO; 3634 if (likely(bitmap[0] & FATTR4_WORD0_MAXFILESIZE)) { 3635 p = xdr_inline_decode(xdr, 8); 3636 if (unlikely(!p)) 3637 goto out_overflow; 3638 xdr_decode_hyper(p, res); 3639 bitmap[0] &= ~FATTR4_WORD0_MAXFILESIZE; 3640 } 3641 dprintk("%s: maxfilesize=%Lu\n", __func__, (unsigned long long)*res); 3642 return status; 3643 out_overflow: 3644 print_overflow_msg(__func__, xdr); 3645 return -EIO; 3646 } 3647 3648 static int decode_attr_maxlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxlink) 3649 { 3650 __be32 *p; 3651 int status = 0; 3652 3653 *maxlink = 1; 3654 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXLINK - 1U))) 3655 return -EIO; 3656 if (likely(bitmap[0] & FATTR4_WORD0_MAXLINK)) { 3657 p = xdr_inline_decode(xdr, 4); 3658 if (unlikely(!p)) 3659 goto out_overflow; 3660 *maxlink = be32_to_cpup(p); 3661 bitmap[0] &= ~FATTR4_WORD0_MAXLINK; 3662 } 3663 dprintk("%s: maxlink=%u\n", __func__, *maxlink); 3664 return status; 3665 out_overflow: 3666 print_overflow_msg(__func__, xdr); 3667 return -EIO; 3668 } 3669 3670 static int decode_attr_maxname(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxname) 3671 { 3672 __be32 *p; 3673 int status = 0; 3674 3675 *maxname = 1024; 3676 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXNAME - 1U))) 3677 return -EIO; 3678 if (likely(bitmap[0] & FATTR4_WORD0_MAXNAME)) { 3679 p = xdr_inline_decode(xdr, 4); 3680 if (unlikely(!p)) 3681 goto out_overflow; 3682 *maxname = be32_to_cpup(p); 3683 bitmap[0] &= ~FATTR4_WORD0_MAXNAME; 3684 } 3685 dprintk("%s: maxname=%u\n", __func__, *maxname); 3686 return status; 3687 out_overflow: 3688 print_overflow_msg(__func__, xdr); 3689 return -EIO; 3690 } 3691 3692 static int decode_attr_maxread(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) 3693 { 3694 __be32 *p; 3695 int status = 0; 3696 3697 *res = 1024; 3698 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXREAD - 1U))) 3699 return -EIO; 3700 if (likely(bitmap[0] & FATTR4_WORD0_MAXREAD)) { 3701 uint64_t maxread; 3702 p = xdr_inline_decode(xdr, 8); 3703 if (unlikely(!p)) 3704 goto out_overflow; 3705 xdr_decode_hyper(p, &maxread); 3706 if (maxread > 0x7FFFFFFF) 3707 maxread = 0x7FFFFFFF; 3708 *res = (uint32_t)maxread; 3709 bitmap[0] &= ~FATTR4_WORD0_MAXREAD; 3710 } 3711 dprintk("%s: maxread=%lu\n", __func__, (unsigned long)*res); 3712 return status; 3713 out_overflow: 3714 print_overflow_msg(__func__, xdr); 3715 return -EIO; 3716 } 3717 3718 static int decode_attr_maxwrite(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) 3719 { 3720 __be32 *p; 3721 int status = 0; 3722 3723 *res = 1024; 3724 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXWRITE - 1U))) 3725 return -EIO; 3726 if (likely(bitmap[0] & FATTR4_WORD0_MAXWRITE)) { 3727 uint64_t maxwrite; 3728 p = xdr_inline_decode(xdr, 8); 3729 if (unlikely(!p)) 3730 goto out_overflow; 3731 xdr_decode_hyper(p, &maxwrite); 3732 if (maxwrite > 0x7FFFFFFF) 3733 maxwrite = 0x7FFFFFFF; 3734 *res = (uint32_t)maxwrite; 3735 bitmap[0] &= ~FATTR4_WORD0_MAXWRITE; 3736 } 3737 dprintk("%s: maxwrite=%lu\n", __func__, (unsigned long)*res); 3738 return status; 3739 out_overflow: 3740 print_overflow_msg(__func__, xdr); 3741 return -EIO; 3742 } 3743 3744 static int decode_attr_mode(struct xdr_stream *xdr, uint32_t *bitmap, umode_t *mode) 3745 { 3746 uint32_t tmp; 3747 __be32 *p; 3748 int ret = 0; 3749 3750 *mode = 0; 3751 if (unlikely(bitmap[1] & (FATTR4_WORD1_MODE - 1U))) 3752 return -EIO; 3753 if (likely(bitmap[1] & FATTR4_WORD1_MODE)) { 3754 p = xdr_inline_decode(xdr, 4); 3755 if (unlikely(!p)) 3756 goto out_overflow; 3757 tmp = be32_to_cpup(p); 3758 *mode = tmp & ~S_IFMT; 3759 bitmap[1] &= ~FATTR4_WORD1_MODE; 3760 ret = NFS_ATTR_FATTR_MODE; 3761 } 3762 dprintk("%s: file mode=0%o\n", __func__, (unsigned int)*mode); 3763 return ret; 3764 out_overflow: 3765 print_overflow_msg(__func__, xdr); 3766 return -EIO; 3767 } 3768 3769 static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *nlink) 3770 { 3771 __be32 *p; 3772 int ret = 0; 3773 3774 *nlink = 1; 3775 if (unlikely(bitmap[1] & (FATTR4_WORD1_NUMLINKS - 1U))) 3776 return -EIO; 3777 if (likely(bitmap[1] & FATTR4_WORD1_NUMLINKS)) { 3778 p = xdr_inline_decode(xdr, 4); 3779 if (unlikely(!p)) 3780 goto out_overflow; 3781 *nlink = be32_to_cpup(p); 3782 bitmap[1] &= ~FATTR4_WORD1_NUMLINKS; 3783 ret = NFS_ATTR_FATTR_NLINK; 3784 } 3785 dprintk("%s: nlink=%u\n", __func__, (unsigned int)*nlink); 3786 return ret; 3787 out_overflow: 3788 print_overflow_msg(__func__, xdr); 3789 return -EIO; 3790 } 3791 3792 static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap, 3793 const struct nfs_server *server, uint32_t *uid, int may_sleep) 3794 { 3795 uint32_t len; 3796 __be32 *p; 3797 int ret = 0; 3798 3799 *uid = -2; 3800 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER - 1U))) 3801 return -EIO; 3802 if (likely(bitmap[1] & FATTR4_WORD1_OWNER)) { 3803 p = xdr_inline_decode(xdr, 4); 3804 if (unlikely(!p)) 3805 goto out_overflow; 3806 len = be32_to_cpup(p); 3807 p = xdr_inline_decode(xdr, len); 3808 if (unlikely(!p)) 3809 goto out_overflow; 3810 if (!may_sleep) { 3811 /* do nothing */ 3812 } else if (len < XDR_MAX_NETOBJ) { 3813 if (nfs_map_name_to_uid(server, (char *)p, len, uid) == 0) 3814 ret = NFS_ATTR_FATTR_OWNER; 3815 else 3816 dprintk("%s: nfs_map_name_to_uid failed!\n", 3817 __func__); 3818 } else 3819 dprintk("%s: name too long (%u)!\n", 3820 __func__, len); 3821 bitmap[1] &= ~FATTR4_WORD1_OWNER; 3822 } 3823 dprintk("%s: uid=%d\n", __func__, (int)*uid); 3824 return ret; 3825 out_overflow: 3826 print_overflow_msg(__func__, xdr); 3827 return -EIO; 3828 } 3829 3830 static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap, 3831 const struct nfs_server *server, uint32_t *gid, int may_sleep) 3832 { 3833 uint32_t len; 3834 __be32 *p; 3835 int ret = 0; 3836 3837 *gid = -2; 3838 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER_GROUP - 1U))) 3839 return -EIO; 3840 if (likely(bitmap[1] & FATTR4_WORD1_OWNER_GROUP)) { 3841 p = xdr_inline_decode(xdr, 4); 3842 if (unlikely(!p)) 3843 goto out_overflow; 3844 len = be32_to_cpup(p); 3845 p = xdr_inline_decode(xdr, len); 3846 if (unlikely(!p)) 3847 goto out_overflow; 3848 if (!may_sleep) { 3849 /* do nothing */ 3850 } else if (len < XDR_MAX_NETOBJ) { 3851 if (nfs_map_group_to_gid(server, (char *)p, len, gid) == 0) 3852 ret = NFS_ATTR_FATTR_GROUP; 3853 else 3854 dprintk("%s: nfs_map_group_to_gid failed!\n", 3855 __func__); 3856 } else 3857 dprintk("%s: name too long (%u)!\n", 3858 __func__, len); 3859 bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP; 3860 } 3861 dprintk("%s: gid=%d\n", __func__, (int)*gid); 3862 return ret; 3863 out_overflow: 3864 print_overflow_msg(__func__, xdr); 3865 return -EIO; 3866 } 3867 3868 static int decode_attr_rdev(struct xdr_stream *xdr, uint32_t *bitmap, dev_t *rdev) 3869 { 3870 uint32_t major = 0, minor = 0; 3871 __be32 *p; 3872 int ret = 0; 3873 3874 *rdev = MKDEV(0,0); 3875 if (unlikely(bitmap[1] & (FATTR4_WORD1_RAWDEV - 1U))) 3876 return -EIO; 3877 if (likely(bitmap[1] & FATTR4_WORD1_RAWDEV)) { 3878 dev_t tmp; 3879 3880 p = xdr_inline_decode(xdr, 8); 3881 if (unlikely(!p)) 3882 goto out_overflow; 3883 major = be32_to_cpup(p++); 3884 minor = be32_to_cpup(p); 3885 tmp = MKDEV(major, minor); 3886 if (MAJOR(tmp) == major && MINOR(tmp) == minor) 3887 *rdev = tmp; 3888 bitmap[1] &= ~ FATTR4_WORD1_RAWDEV; 3889 ret = NFS_ATTR_FATTR_RDEV; 3890 } 3891 dprintk("%s: rdev=(0x%x:0x%x)\n", __func__, major, minor); 3892 return ret; 3893 out_overflow: 3894 print_overflow_msg(__func__, xdr); 3895 return -EIO; 3896 } 3897 3898 static int decode_attr_space_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 3899 { 3900 __be32 *p; 3901 int status = 0; 3902 3903 *res = 0; 3904 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_AVAIL - 1U))) 3905 return -EIO; 3906 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_AVAIL)) { 3907 p = xdr_inline_decode(xdr, 8); 3908 if (unlikely(!p)) 3909 goto out_overflow; 3910 xdr_decode_hyper(p, res); 3911 bitmap[1] &= ~FATTR4_WORD1_SPACE_AVAIL; 3912 } 3913 dprintk("%s: space avail=%Lu\n", __func__, (unsigned long long)*res); 3914 return status; 3915 out_overflow: 3916 print_overflow_msg(__func__, xdr); 3917 return -EIO; 3918 } 3919 3920 static int decode_attr_space_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 3921 { 3922 __be32 *p; 3923 int status = 0; 3924 3925 *res = 0; 3926 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_FREE - 1U))) 3927 return -EIO; 3928 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_FREE)) { 3929 p = xdr_inline_decode(xdr, 8); 3930 if (unlikely(!p)) 3931 goto out_overflow; 3932 xdr_decode_hyper(p, res); 3933 bitmap[1] &= ~FATTR4_WORD1_SPACE_FREE; 3934 } 3935 dprintk("%s: space free=%Lu\n", __func__, (unsigned long long)*res); 3936 return status; 3937 out_overflow: 3938 print_overflow_msg(__func__, xdr); 3939 return -EIO; 3940 } 3941 3942 static int decode_attr_space_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 3943 { 3944 __be32 *p; 3945 int status = 0; 3946 3947 *res = 0; 3948 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_TOTAL - 1U))) 3949 return -EIO; 3950 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_TOTAL)) { 3951 p = xdr_inline_decode(xdr, 8); 3952 if (unlikely(!p)) 3953 goto out_overflow; 3954 xdr_decode_hyper(p, res); 3955 bitmap[1] &= ~FATTR4_WORD1_SPACE_TOTAL; 3956 } 3957 dprintk("%s: space total=%Lu\n", __func__, (unsigned long long)*res); 3958 return status; 3959 out_overflow: 3960 print_overflow_msg(__func__, xdr); 3961 return -EIO; 3962 } 3963 3964 static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *used) 3965 { 3966 __be32 *p; 3967 int ret = 0; 3968 3969 *used = 0; 3970 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_USED - 1U))) 3971 return -EIO; 3972 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_USED)) { 3973 p = xdr_inline_decode(xdr, 8); 3974 if (unlikely(!p)) 3975 goto out_overflow; 3976 xdr_decode_hyper(p, used); 3977 bitmap[1] &= ~FATTR4_WORD1_SPACE_USED; 3978 ret = NFS_ATTR_FATTR_SPACE_USED; 3979 } 3980 dprintk("%s: space used=%Lu\n", __func__, 3981 (unsigned long long)*used); 3982 return ret; 3983 out_overflow: 3984 print_overflow_msg(__func__, xdr); 3985 return -EIO; 3986 } 3987 3988 static int decode_attr_time(struct xdr_stream *xdr, struct timespec *time) 3989 { 3990 __be32 *p; 3991 uint64_t sec; 3992 uint32_t nsec; 3993 3994 p = xdr_inline_decode(xdr, 12); 3995 if (unlikely(!p)) 3996 goto out_overflow; 3997 p = xdr_decode_hyper(p, &sec); 3998 nsec = be32_to_cpup(p); 3999 time->tv_sec = (time_t)sec; 4000 time->tv_nsec = (long)nsec; 4001 return 0; 4002 out_overflow: 4003 print_overflow_msg(__func__, xdr); 4004 return -EIO; 4005 } 4006 4007 static int decode_attr_time_access(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time) 4008 { 4009 int status = 0; 4010 4011 time->tv_sec = 0; 4012 time->tv_nsec = 0; 4013 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_ACCESS - 1U))) 4014 return -EIO; 4015 if (likely(bitmap[1] & FATTR4_WORD1_TIME_ACCESS)) { 4016 status = decode_attr_time(xdr, time); 4017 if (status == 0) 4018 status = NFS_ATTR_FATTR_ATIME; 4019 bitmap[1] &= ~FATTR4_WORD1_TIME_ACCESS; 4020 } 4021 dprintk("%s: atime=%ld\n", __func__, (long)time->tv_sec); 4022 return status; 4023 } 4024 4025 static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time) 4026 { 4027 int status = 0; 4028 4029 time->tv_sec = 0; 4030 time->tv_nsec = 0; 4031 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_METADATA - 1U))) 4032 return -EIO; 4033 if (likely(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) { 4034 status = decode_attr_time(xdr, time); 4035 if (status == 0) 4036 status = NFS_ATTR_FATTR_CTIME; 4037 bitmap[1] &= ~FATTR4_WORD1_TIME_METADATA; 4038 } 4039 dprintk("%s: ctime=%ld\n", __func__, (long)time->tv_sec); 4040 return status; 4041 } 4042 4043 static int decode_attr_time_delta(struct xdr_stream *xdr, uint32_t *bitmap, 4044 struct timespec *time) 4045 { 4046 int status = 0; 4047 4048 time->tv_sec = 0; 4049 time->tv_nsec = 0; 4050 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_DELTA - 1U))) 4051 return -EIO; 4052 if (likely(bitmap[1] & FATTR4_WORD1_TIME_DELTA)) { 4053 status = decode_attr_time(xdr, time); 4054 bitmap[1] &= ~FATTR4_WORD1_TIME_DELTA; 4055 } 4056 dprintk("%s: time_delta=%ld %ld\n", __func__, (long)time->tv_sec, 4057 (long)time->tv_nsec); 4058 return status; 4059 } 4060 4061 static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time) 4062 { 4063 int status = 0; 4064 4065 time->tv_sec = 0; 4066 time->tv_nsec = 0; 4067 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_MODIFY - 1U))) 4068 return -EIO; 4069 if (likely(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) { 4070 status = decode_attr_time(xdr, time); 4071 if (status == 0) 4072 status = NFS_ATTR_FATTR_MTIME; 4073 bitmap[1] &= ~FATTR4_WORD1_TIME_MODIFY; 4074 } 4075 dprintk("%s: mtime=%ld\n", __func__, (long)time->tv_sec); 4076 return status; 4077 } 4078 4079 static int verify_attr_len(struct xdr_stream *xdr, __be32 *savep, uint32_t attrlen) 4080 { 4081 unsigned int attrwords = XDR_QUADLEN(attrlen); 4082 unsigned int nwords = xdr->p - savep; 4083 4084 if (unlikely(attrwords != nwords)) { 4085 dprintk("%s: server returned incorrect attribute length: " 4086 "%u %c %u\n", 4087 __func__, 4088 attrwords << 2, 4089 (attrwords < nwords) ? '<' : '>', 4090 nwords << 2); 4091 return -EIO; 4092 } 4093 return 0; 4094 } 4095 4096 static int decode_change_info(struct xdr_stream *xdr, struct nfs4_change_info *cinfo) 4097 { 4098 __be32 *p; 4099 4100 p = xdr_inline_decode(xdr, 20); 4101 if (unlikely(!p)) 4102 goto out_overflow; 4103 cinfo->atomic = be32_to_cpup(p++); 4104 p = xdr_decode_hyper(p, &cinfo->before); 4105 xdr_decode_hyper(p, &cinfo->after); 4106 return 0; 4107 out_overflow: 4108 print_overflow_msg(__func__, xdr); 4109 return -EIO; 4110 } 4111 4112 static int decode_access(struct xdr_stream *xdr, struct nfs4_accessres *access) 4113 { 4114 __be32 *p; 4115 uint32_t supp, acc; 4116 int status; 4117 4118 status = decode_op_hdr(xdr, OP_ACCESS); 4119 if (status) 4120 return status; 4121 p = xdr_inline_decode(xdr, 8); 4122 if (unlikely(!p)) 4123 goto out_overflow; 4124 supp = be32_to_cpup(p++); 4125 acc = be32_to_cpup(p); 4126 access->supported = supp; 4127 access->access = acc; 4128 return 0; 4129 out_overflow: 4130 print_overflow_msg(__func__, xdr); 4131 return -EIO; 4132 } 4133 4134 static int decode_opaque_fixed(struct xdr_stream *xdr, void *buf, size_t len) 4135 { 4136 __be32 *p; 4137 4138 p = xdr_inline_decode(xdr, len); 4139 if (likely(p)) { 4140 memcpy(buf, p, len); 4141 return 0; 4142 } 4143 print_overflow_msg(__func__, xdr); 4144 return -EIO; 4145 } 4146 4147 static int decode_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid) 4148 { 4149 return decode_opaque_fixed(xdr, stateid->data, NFS4_STATEID_SIZE); 4150 } 4151 4152 static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res) 4153 { 4154 int status; 4155 4156 status = decode_op_hdr(xdr, OP_CLOSE); 4157 if (status != -EIO) 4158 nfs_increment_open_seqid(status, res->seqid); 4159 if (!status) 4160 status = decode_stateid(xdr, &res->stateid); 4161 return status; 4162 } 4163 4164 static int decode_verifier(struct xdr_stream *xdr, void *verifier) 4165 { 4166 return decode_opaque_fixed(xdr, verifier, 8); 4167 } 4168 4169 static int decode_commit(struct xdr_stream *xdr, struct nfs_writeres *res) 4170 { 4171 int status; 4172 4173 status = decode_op_hdr(xdr, OP_COMMIT); 4174 if (!status) 4175 status = decode_verifier(xdr, res->verf->verifier); 4176 return status; 4177 } 4178 4179 static int decode_create(struct xdr_stream *xdr, struct nfs4_change_info *cinfo) 4180 { 4181 __be32 *p; 4182 uint32_t bmlen; 4183 int status; 4184 4185 status = decode_op_hdr(xdr, OP_CREATE); 4186 if (status) 4187 return status; 4188 if ((status = decode_change_info(xdr, cinfo))) 4189 return status; 4190 p = xdr_inline_decode(xdr, 4); 4191 if (unlikely(!p)) 4192 goto out_overflow; 4193 bmlen = be32_to_cpup(p); 4194 p = xdr_inline_decode(xdr, bmlen << 2); 4195 if (likely(p)) 4196 return 0; 4197 out_overflow: 4198 print_overflow_msg(__func__, xdr); 4199 return -EIO; 4200 } 4201 4202 static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_res *res) 4203 { 4204 __be32 *savep; 4205 uint32_t attrlen, bitmap[3] = {0}; 4206 int status; 4207 4208 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) 4209 goto xdr_error; 4210 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) 4211 goto xdr_error; 4212 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) 4213 goto xdr_error; 4214 if ((status = decode_attr_supported(xdr, bitmap, res->attr_bitmask)) != 0) 4215 goto xdr_error; 4216 if ((status = decode_attr_link_support(xdr, bitmap, &res->has_links)) != 0) 4217 goto xdr_error; 4218 if ((status = decode_attr_symlink_support(xdr, bitmap, &res->has_symlinks)) != 0) 4219 goto xdr_error; 4220 if ((status = decode_attr_aclsupport(xdr, bitmap, &res->acl_bitmask)) != 0) 4221 goto xdr_error; 4222 status = verify_attr_len(xdr, savep, attrlen); 4223 xdr_error: 4224 dprintk("%s: xdr returned %d!\n", __func__, -status); 4225 return status; 4226 } 4227 4228 static int decode_statfs(struct xdr_stream *xdr, struct nfs_fsstat *fsstat) 4229 { 4230 __be32 *savep; 4231 uint32_t attrlen, bitmap[3] = {0}; 4232 int status; 4233 4234 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) 4235 goto xdr_error; 4236 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) 4237 goto xdr_error; 4238 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) 4239 goto xdr_error; 4240 4241 if ((status = decode_attr_files_avail(xdr, bitmap, &fsstat->afiles)) != 0) 4242 goto xdr_error; 4243 if ((status = decode_attr_files_free(xdr, bitmap, &fsstat->ffiles)) != 0) 4244 goto xdr_error; 4245 if ((status = decode_attr_files_total(xdr, bitmap, &fsstat->tfiles)) != 0) 4246 goto xdr_error; 4247 if ((status = decode_attr_space_avail(xdr, bitmap, &fsstat->abytes)) != 0) 4248 goto xdr_error; 4249 if ((status = decode_attr_space_free(xdr, bitmap, &fsstat->fbytes)) != 0) 4250 goto xdr_error; 4251 if ((status = decode_attr_space_total(xdr, bitmap, &fsstat->tbytes)) != 0) 4252 goto xdr_error; 4253 4254 status = verify_attr_len(xdr, savep, attrlen); 4255 xdr_error: 4256 dprintk("%s: xdr returned %d!\n", __func__, -status); 4257 return status; 4258 } 4259 4260 static int decode_pathconf(struct xdr_stream *xdr, struct nfs_pathconf *pathconf) 4261 { 4262 __be32 *savep; 4263 uint32_t attrlen, bitmap[3] = {0}; 4264 int status; 4265 4266 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) 4267 goto xdr_error; 4268 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) 4269 goto xdr_error; 4270 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) 4271 goto xdr_error; 4272 4273 if ((status = decode_attr_maxlink(xdr, bitmap, &pathconf->max_link)) != 0) 4274 goto xdr_error; 4275 if ((status = decode_attr_maxname(xdr, bitmap, &pathconf->max_namelen)) != 0) 4276 goto xdr_error; 4277 4278 status = verify_attr_len(xdr, savep, attrlen); 4279 xdr_error: 4280 dprintk("%s: xdr returned %d!\n", __func__, -status); 4281 return status; 4282 } 4283 4284 static int decode_getfattr_attrs(struct xdr_stream *xdr, uint32_t *bitmap, 4285 struct nfs_fattr *fattr, struct nfs_fh *fh, 4286 const struct nfs_server *server, int may_sleep) 4287 { 4288 int status; 4289 umode_t fmode = 0; 4290 uint32_t type; 4291 int32_t err; 4292 4293 status = decode_attr_type(xdr, bitmap, &type); 4294 if (status < 0) 4295 goto xdr_error; 4296 fattr->mode = 0; 4297 if (status != 0) { 4298 fattr->mode |= nfs_type2fmt[type]; 4299 fattr->valid |= status; 4300 } 4301 4302 status = decode_attr_change(xdr, bitmap, &fattr->change_attr); 4303 if (status < 0) 4304 goto xdr_error; 4305 fattr->valid |= status; 4306 4307 status = decode_attr_size(xdr, bitmap, &fattr->size); 4308 if (status < 0) 4309 goto xdr_error; 4310 fattr->valid |= status; 4311 4312 status = decode_attr_fsid(xdr, bitmap, &fattr->fsid); 4313 if (status < 0) 4314 goto xdr_error; 4315 fattr->valid |= status; 4316 4317 err = 0; 4318 status = decode_attr_error(xdr, bitmap, &err); 4319 if (status < 0) 4320 goto xdr_error; 4321 if (err == -NFS4ERR_WRONGSEC) 4322 nfs_fixup_secinfo_attributes(fattr, fh); 4323 4324 status = decode_attr_filehandle(xdr, bitmap, fh); 4325 if (status < 0) 4326 goto xdr_error; 4327 4328 status = decode_attr_fileid(xdr, bitmap, &fattr->fileid); 4329 if (status < 0) 4330 goto xdr_error; 4331 fattr->valid |= status; 4332 4333 status = decode_attr_fs_locations(xdr, bitmap, container_of(fattr, 4334 struct nfs4_fs_locations, 4335 fattr)); 4336 if (status < 0) 4337 goto xdr_error; 4338 fattr->valid |= status; 4339 4340 status = decode_attr_mode(xdr, bitmap, &fmode); 4341 if (status < 0) 4342 goto xdr_error; 4343 if (status != 0) { 4344 fattr->mode |= fmode; 4345 fattr->valid |= status; 4346 } 4347 4348 status = decode_attr_nlink(xdr, bitmap, &fattr->nlink); 4349 if (status < 0) 4350 goto xdr_error; 4351 fattr->valid |= status; 4352 4353 status = decode_attr_owner(xdr, bitmap, server, &fattr->uid, may_sleep); 4354 if (status < 0) 4355 goto xdr_error; 4356 fattr->valid |= status; 4357 4358 status = decode_attr_group(xdr, bitmap, server, &fattr->gid, may_sleep); 4359 if (status < 0) 4360 goto xdr_error; 4361 fattr->valid |= status; 4362 4363 status = decode_attr_rdev(xdr, bitmap, &fattr->rdev); 4364 if (status < 0) 4365 goto xdr_error; 4366 fattr->valid |= status; 4367 4368 status = decode_attr_space_used(xdr, bitmap, &fattr->du.nfs3.used); 4369 if (status < 0) 4370 goto xdr_error; 4371 fattr->valid |= status; 4372 4373 status = decode_attr_time_access(xdr, bitmap, &fattr->atime); 4374 if (status < 0) 4375 goto xdr_error; 4376 fattr->valid |= status; 4377 4378 status = decode_attr_time_metadata(xdr, bitmap, &fattr->ctime); 4379 if (status < 0) 4380 goto xdr_error; 4381 fattr->valid |= status; 4382 4383 status = decode_attr_time_modify(xdr, bitmap, &fattr->mtime); 4384 if (status < 0) 4385 goto xdr_error; 4386 fattr->valid |= status; 4387 4388 status = decode_attr_mounted_on_fileid(xdr, bitmap, &fattr->mounted_on_fileid); 4389 if (status < 0) 4390 goto xdr_error; 4391 fattr->valid |= status; 4392 4393 xdr_error: 4394 dprintk("%s: xdr returned %d\n", __func__, -status); 4395 return status; 4396 } 4397 4398 static int decode_getfattr_generic(struct xdr_stream *xdr, struct nfs_fattr *fattr, 4399 struct nfs_fh *fh, const struct nfs_server *server, int may_sleep) 4400 { 4401 __be32 *savep; 4402 uint32_t attrlen, 4403 bitmap[3] = {0}; 4404 int status; 4405 4406 status = decode_op_hdr(xdr, OP_GETATTR); 4407 if (status < 0) 4408 goto xdr_error; 4409 4410 status = decode_attr_bitmap(xdr, bitmap); 4411 if (status < 0) 4412 goto xdr_error; 4413 4414 status = decode_attr_length(xdr, &attrlen, &savep); 4415 if (status < 0) 4416 goto xdr_error; 4417 4418 status = decode_getfattr_attrs(xdr, bitmap, fattr, fh, server, may_sleep); 4419 if (status < 0) 4420 goto xdr_error; 4421 4422 status = verify_attr_len(xdr, savep, attrlen); 4423 xdr_error: 4424 dprintk("%s: xdr returned %d\n", __func__, -status); 4425 return status; 4426 } 4427 4428 static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr, 4429 const struct nfs_server *server, int may_sleep) 4430 { 4431 return decode_getfattr_generic(xdr, fattr, NULL, server, may_sleep); 4432 } 4433 4434 /* 4435 * Decode potentially multiple layout types. Currently we only support 4436 * one layout driver per file system. 4437 */ 4438 static int decode_first_pnfs_layout_type(struct xdr_stream *xdr, 4439 uint32_t *layouttype) 4440 { 4441 uint32_t *p; 4442 int num; 4443 4444 p = xdr_inline_decode(xdr, 4); 4445 if (unlikely(!p)) 4446 goto out_overflow; 4447 num = be32_to_cpup(p); 4448 4449 /* pNFS is not supported by the underlying file system */ 4450 if (num == 0) { 4451 *layouttype = 0; 4452 return 0; 4453 } 4454 if (num > 1) 4455 printk(KERN_INFO "%s: Warning: Multiple pNFS layout drivers " 4456 "per filesystem not supported\n", __func__); 4457 4458 /* Decode and set first layout type, move xdr->p past unused types */ 4459 p = xdr_inline_decode(xdr, num * 4); 4460 if (unlikely(!p)) 4461 goto out_overflow; 4462 *layouttype = be32_to_cpup(p); 4463 return 0; 4464 out_overflow: 4465 print_overflow_msg(__func__, xdr); 4466 return -EIO; 4467 } 4468 4469 /* 4470 * The type of file system exported. 4471 * Note we must ensure that layouttype is set in any non-error case. 4472 */ 4473 static int decode_attr_pnfstype(struct xdr_stream *xdr, uint32_t *bitmap, 4474 uint32_t *layouttype) 4475 { 4476 int status = 0; 4477 4478 dprintk("%s: bitmap is %x\n", __func__, bitmap[1]); 4479 if (unlikely(bitmap[1] & (FATTR4_WORD1_FS_LAYOUT_TYPES - 1U))) 4480 return -EIO; 4481 if (bitmap[1] & FATTR4_WORD1_FS_LAYOUT_TYPES) { 4482 status = decode_first_pnfs_layout_type(xdr, layouttype); 4483 bitmap[1] &= ~FATTR4_WORD1_FS_LAYOUT_TYPES; 4484 } else 4485 *layouttype = 0; 4486 return status; 4487 } 4488 4489 /* 4490 * The prefered block size for layout directed io 4491 */ 4492 static int decode_attr_layout_blksize(struct xdr_stream *xdr, uint32_t *bitmap, 4493 uint32_t *res) 4494 { 4495 __be32 *p; 4496 4497 dprintk("%s: bitmap is %x\n", __func__, bitmap[2]); 4498 *res = 0; 4499 if (bitmap[2] & FATTR4_WORD2_LAYOUT_BLKSIZE) { 4500 p = xdr_inline_decode(xdr, 4); 4501 if (unlikely(!p)) { 4502 print_overflow_msg(__func__, xdr); 4503 return -EIO; 4504 } 4505 *res = be32_to_cpup(p); 4506 bitmap[2] &= ~FATTR4_WORD2_LAYOUT_BLKSIZE; 4507 } 4508 return 0; 4509 } 4510 4511 static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo) 4512 { 4513 __be32 *savep; 4514 uint32_t attrlen, bitmap[3]; 4515 int status; 4516 4517 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) 4518 goto xdr_error; 4519 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) 4520 goto xdr_error; 4521 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) 4522 goto xdr_error; 4523 4524 fsinfo->rtmult = fsinfo->wtmult = 512; /* ??? */ 4525 4526 if ((status = decode_attr_lease_time(xdr, bitmap, &fsinfo->lease_time)) != 0) 4527 goto xdr_error; 4528 if ((status = decode_attr_maxfilesize(xdr, bitmap, &fsinfo->maxfilesize)) != 0) 4529 goto xdr_error; 4530 if ((status = decode_attr_maxread(xdr, bitmap, &fsinfo->rtmax)) != 0) 4531 goto xdr_error; 4532 fsinfo->rtpref = fsinfo->dtpref = fsinfo->rtmax; 4533 if ((status = decode_attr_maxwrite(xdr, bitmap, &fsinfo->wtmax)) != 0) 4534 goto xdr_error; 4535 fsinfo->wtpref = fsinfo->wtmax; 4536 status = decode_attr_time_delta(xdr, bitmap, &fsinfo->time_delta); 4537 if (status != 0) 4538 goto xdr_error; 4539 status = decode_attr_pnfstype(xdr, bitmap, &fsinfo->layouttype); 4540 if (status != 0) 4541 goto xdr_error; 4542 status = decode_attr_layout_blksize(xdr, bitmap, &fsinfo->blksize); 4543 if (status) 4544 goto xdr_error; 4545 4546 status = verify_attr_len(xdr, savep, attrlen); 4547 xdr_error: 4548 dprintk("%s: xdr returned %d!\n", __func__, -status); 4549 return status; 4550 } 4551 4552 static int decode_getfh(struct xdr_stream *xdr, struct nfs_fh *fh) 4553 { 4554 __be32 *p; 4555 uint32_t len; 4556 int status; 4557 4558 /* Zero handle first to allow comparisons */ 4559 memset(fh, 0, sizeof(*fh)); 4560 4561 status = decode_op_hdr(xdr, OP_GETFH); 4562 if (status) 4563 return status; 4564 4565 p = xdr_inline_decode(xdr, 4); 4566 if (unlikely(!p)) 4567 goto out_overflow; 4568 len = be32_to_cpup(p); 4569 if (len > NFS4_FHSIZE) 4570 return -EIO; 4571 fh->size = len; 4572 p = xdr_inline_decode(xdr, len); 4573 if (unlikely(!p)) 4574 goto out_overflow; 4575 memcpy(fh->data, p, len); 4576 return 0; 4577 out_overflow: 4578 print_overflow_msg(__func__, xdr); 4579 return -EIO; 4580 } 4581 4582 static int decode_link(struct xdr_stream *xdr, struct nfs4_change_info *cinfo) 4583 { 4584 int status; 4585 4586 status = decode_op_hdr(xdr, OP_LINK); 4587 if (status) 4588 return status; 4589 return decode_change_info(xdr, cinfo); 4590 } 4591 4592 /* 4593 * We create the owner, so we know a proper owner.id length is 4. 4594 */ 4595 static int decode_lock_denied (struct xdr_stream *xdr, struct file_lock *fl) 4596 { 4597 uint64_t offset, length, clientid; 4598 __be32 *p; 4599 uint32_t namelen, type; 4600 4601 p = xdr_inline_decode(xdr, 32); /* read 32 bytes */ 4602 if (unlikely(!p)) 4603 goto out_overflow; 4604 p = xdr_decode_hyper(p, &offset); /* read 2 8-byte long words */ 4605 p = xdr_decode_hyper(p, &length); 4606 type = be32_to_cpup(p++); /* 4 byte read */ 4607 if (fl != NULL) { /* manipulate file lock */ 4608 fl->fl_start = (loff_t)offset; 4609 fl->fl_end = fl->fl_start + (loff_t)length - 1; 4610 if (length == ~(uint64_t)0) 4611 fl->fl_end = OFFSET_MAX; 4612 fl->fl_type = F_WRLCK; 4613 if (type & 1) 4614 fl->fl_type = F_RDLCK; 4615 fl->fl_pid = 0; 4616 } 4617 p = xdr_decode_hyper(p, &clientid); /* read 8 bytes */ 4618 namelen = be32_to_cpup(p); /* read 4 bytes */ /* have read all 32 bytes now */ 4619 p = xdr_inline_decode(xdr, namelen); /* variable size field */ 4620 if (likely(p)) 4621 return -NFS4ERR_DENIED; 4622 out_overflow: 4623 print_overflow_msg(__func__, xdr); 4624 return -EIO; 4625 } 4626 4627 static int decode_lock(struct xdr_stream *xdr, struct nfs_lock_res *res) 4628 { 4629 int status; 4630 4631 status = decode_op_hdr(xdr, OP_LOCK); 4632 if (status == -EIO) 4633 goto out; 4634 if (status == 0) { 4635 status = decode_stateid(xdr, &res->stateid); 4636 if (unlikely(status)) 4637 goto out; 4638 } else if (status == -NFS4ERR_DENIED) 4639 status = decode_lock_denied(xdr, NULL); 4640 if (res->open_seqid != NULL) 4641 nfs_increment_open_seqid(status, res->open_seqid); 4642 nfs_increment_lock_seqid(status, res->lock_seqid); 4643 out: 4644 return status; 4645 } 4646 4647 static int decode_lockt(struct xdr_stream *xdr, struct nfs_lockt_res *res) 4648 { 4649 int status; 4650 status = decode_op_hdr(xdr, OP_LOCKT); 4651 if (status == -NFS4ERR_DENIED) 4652 return decode_lock_denied(xdr, res->denied); 4653 return status; 4654 } 4655 4656 static int decode_locku(struct xdr_stream *xdr, struct nfs_locku_res *res) 4657 { 4658 int status; 4659 4660 status = decode_op_hdr(xdr, OP_LOCKU); 4661 if (status != -EIO) 4662 nfs_increment_lock_seqid(status, res->seqid); 4663 if (status == 0) 4664 status = decode_stateid(xdr, &res->stateid); 4665 return status; 4666 } 4667 4668 static int decode_release_lockowner(struct xdr_stream *xdr) 4669 { 4670 return decode_op_hdr(xdr, OP_RELEASE_LOCKOWNER); 4671 } 4672 4673 static int decode_lookup(struct xdr_stream *xdr) 4674 { 4675 return decode_op_hdr(xdr, OP_LOOKUP); 4676 } 4677 4678 /* This is too sick! */ 4679 static int decode_space_limit(struct xdr_stream *xdr, u64 *maxsize) 4680 { 4681 __be32 *p; 4682 uint32_t limit_type, nblocks, blocksize; 4683 4684 p = xdr_inline_decode(xdr, 12); 4685 if (unlikely(!p)) 4686 goto out_overflow; 4687 limit_type = be32_to_cpup(p++); 4688 switch (limit_type) { 4689 case 1: 4690 xdr_decode_hyper(p, maxsize); 4691 break; 4692 case 2: 4693 nblocks = be32_to_cpup(p++); 4694 blocksize = be32_to_cpup(p); 4695 *maxsize = (uint64_t)nblocks * (uint64_t)blocksize; 4696 } 4697 return 0; 4698 out_overflow: 4699 print_overflow_msg(__func__, xdr); 4700 return -EIO; 4701 } 4702 4703 static int decode_delegation(struct xdr_stream *xdr, struct nfs_openres *res) 4704 { 4705 __be32 *p; 4706 uint32_t delegation_type; 4707 int status; 4708 4709 p = xdr_inline_decode(xdr, 4); 4710 if (unlikely(!p)) 4711 goto out_overflow; 4712 delegation_type = be32_to_cpup(p); 4713 if (delegation_type == NFS4_OPEN_DELEGATE_NONE) { 4714 res->delegation_type = 0; 4715 return 0; 4716 } 4717 status = decode_stateid(xdr, &res->delegation); 4718 if (unlikely(status)) 4719 return status; 4720 p = xdr_inline_decode(xdr, 4); 4721 if (unlikely(!p)) 4722 goto out_overflow; 4723 res->do_recall = be32_to_cpup(p); 4724 4725 switch (delegation_type) { 4726 case NFS4_OPEN_DELEGATE_READ: 4727 res->delegation_type = FMODE_READ; 4728 break; 4729 case NFS4_OPEN_DELEGATE_WRITE: 4730 res->delegation_type = FMODE_WRITE|FMODE_READ; 4731 if (decode_space_limit(xdr, &res->maxsize) < 0) 4732 return -EIO; 4733 } 4734 return decode_ace(xdr, NULL, res->server->nfs_client); 4735 out_overflow: 4736 print_overflow_msg(__func__, xdr); 4737 return -EIO; 4738 } 4739 4740 static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res) 4741 { 4742 __be32 *p; 4743 uint32_t savewords, bmlen, i; 4744 int status; 4745 4746 status = decode_op_hdr(xdr, OP_OPEN); 4747 if (status != -EIO) 4748 nfs_increment_open_seqid(status, res->seqid); 4749 if (!status) 4750 status = decode_stateid(xdr, &res->stateid); 4751 if (unlikely(status)) 4752 return status; 4753 4754 decode_change_info(xdr, &res->cinfo); 4755 4756 p = xdr_inline_decode(xdr, 8); 4757 if (unlikely(!p)) 4758 goto out_overflow; 4759 res->rflags = be32_to_cpup(p++); 4760 bmlen = be32_to_cpup(p); 4761 if (bmlen > 10) 4762 goto xdr_error; 4763 4764 p = xdr_inline_decode(xdr, bmlen << 2); 4765 if (unlikely(!p)) 4766 goto out_overflow; 4767 savewords = min_t(uint32_t, bmlen, NFS4_BITMAP_SIZE); 4768 for (i = 0; i < savewords; ++i) 4769 res->attrset[i] = be32_to_cpup(p++); 4770 for (; i < NFS4_BITMAP_SIZE; i++) 4771 res->attrset[i] = 0; 4772 4773 return decode_delegation(xdr, res); 4774 xdr_error: 4775 dprintk("%s: Bitmap too large! Length = %u\n", __func__, bmlen); 4776 return -EIO; 4777 out_overflow: 4778 print_overflow_msg(__func__, xdr); 4779 return -EIO; 4780 } 4781 4782 static int decode_open_confirm(struct xdr_stream *xdr, struct nfs_open_confirmres *res) 4783 { 4784 int status; 4785 4786 status = decode_op_hdr(xdr, OP_OPEN_CONFIRM); 4787 if (status != -EIO) 4788 nfs_increment_open_seqid(status, res->seqid); 4789 if (!status) 4790 status = decode_stateid(xdr, &res->stateid); 4791 return status; 4792 } 4793 4794 static int decode_open_downgrade(struct xdr_stream *xdr, struct nfs_closeres *res) 4795 { 4796 int status; 4797 4798 status = decode_op_hdr(xdr, OP_OPEN_DOWNGRADE); 4799 if (status != -EIO) 4800 nfs_increment_open_seqid(status, res->seqid); 4801 if (!status) 4802 status = decode_stateid(xdr, &res->stateid); 4803 return status; 4804 } 4805 4806 static int decode_putfh(struct xdr_stream *xdr) 4807 { 4808 return decode_op_hdr(xdr, OP_PUTFH); 4809 } 4810 4811 static int decode_putrootfh(struct xdr_stream *xdr) 4812 { 4813 return decode_op_hdr(xdr, OP_PUTROOTFH); 4814 } 4815 4816 static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs_readres *res) 4817 { 4818 struct kvec *iov = req->rq_rcv_buf.head; 4819 __be32 *p; 4820 uint32_t count, eof, recvd, hdrlen; 4821 int status; 4822 4823 status = decode_op_hdr(xdr, OP_READ); 4824 if (status) 4825 return status; 4826 p = xdr_inline_decode(xdr, 8); 4827 if (unlikely(!p)) 4828 goto out_overflow; 4829 eof = be32_to_cpup(p++); 4830 count = be32_to_cpup(p); 4831 hdrlen = (u8 *) xdr->p - (u8 *) iov->iov_base; 4832 recvd = req->rq_rcv_buf.len - hdrlen; 4833 if (count > recvd) { 4834 dprintk("NFS: server cheating in read reply: " 4835 "count %u > recvd %u\n", count, recvd); 4836 count = recvd; 4837 eof = 0; 4838 } 4839 xdr_read_pages(xdr, count); 4840 res->eof = eof; 4841 res->count = count; 4842 return 0; 4843 out_overflow: 4844 print_overflow_msg(__func__, xdr); 4845 return -EIO; 4846 } 4847 4848 static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs4_readdir_res *readdir) 4849 { 4850 struct xdr_buf *rcvbuf = &req->rq_rcv_buf; 4851 struct kvec *iov = rcvbuf->head; 4852 size_t hdrlen; 4853 u32 recvd, pglen = rcvbuf->page_len; 4854 int status; 4855 4856 status = decode_op_hdr(xdr, OP_READDIR); 4857 if (!status) 4858 status = decode_verifier(xdr, readdir->verifier.data); 4859 if (unlikely(status)) 4860 return status; 4861 dprintk("%s: verifier = %08x:%08x\n", 4862 __func__, 4863 ((u32 *)readdir->verifier.data)[0], 4864 ((u32 *)readdir->verifier.data)[1]); 4865 4866 4867 hdrlen = (char *) xdr->p - (char *) iov->iov_base; 4868 recvd = rcvbuf->len - hdrlen; 4869 if (pglen > recvd) 4870 pglen = recvd; 4871 xdr_read_pages(xdr, pglen); 4872 4873 4874 return pglen; 4875 } 4876 4877 static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req) 4878 { 4879 struct xdr_buf *rcvbuf = &req->rq_rcv_buf; 4880 struct kvec *iov = rcvbuf->head; 4881 size_t hdrlen; 4882 u32 len, recvd; 4883 __be32 *p; 4884 int status; 4885 4886 status = decode_op_hdr(xdr, OP_READLINK); 4887 if (status) 4888 return status; 4889 4890 /* Convert length of symlink */ 4891 p = xdr_inline_decode(xdr, 4); 4892 if (unlikely(!p)) 4893 goto out_overflow; 4894 len = be32_to_cpup(p); 4895 if (len >= rcvbuf->page_len || len <= 0) { 4896 dprintk("nfs: server returned giant symlink!\n"); 4897 return -ENAMETOOLONG; 4898 } 4899 hdrlen = (char *) xdr->p - (char *) iov->iov_base; 4900 recvd = req->rq_rcv_buf.len - hdrlen; 4901 if (recvd < len) { 4902 dprintk("NFS: server cheating in readlink reply: " 4903 "count %u > recvd %u\n", len, recvd); 4904 return -EIO; 4905 } 4906 xdr_read_pages(xdr, len); 4907 /* 4908 * The XDR encode routine has set things up so that 4909 * the link text will be copied directly into the 4910 * buffer. We just have to do overflow-checking, 4911 * and and null-terminate the text (the VFS expects 4912 * null-termination). 4913 */ 4914 xdr_terminate_string(rcvbuf, len); 4915 return 0; 4916 out_overflow: 4917 print_overflow_msg(__func__, xdr); 4918 return -EIO; 4919 } 4920 4921 static int decode_remove(struct xdr_stream *xdr, struct nfs4_change_info *cinfo) 4922 { 4923 int status; 4924 4925 status = decode_op_hdr(xdr, OP_REMOVE); 4926 if (status) 4927 goto out; 4928 status = decode_change_info(xdr, cinfo); 4929 out: 4930 return status; 4931 } 4932 4933 static int decode_rename(struct xdr_stream *xdr, struct nfs4_change_info *old_cinfo, 4934 struct nfs4_change_info *new_cinfo) 4935 { 4936 int status; 4937 4938 status = decode_op_hdr(xdr, OP_RENAME); 4939 if (status) 4940 goto out; 4941 if ((status = decode_change_info(xdr, old_cinfo))) 4942 goto out; 4943 status = decode_change_info(xdr, new_cinfo); 4944 out: 4945 return status; 4946 } 4947 4948 static int decode_renew(struct xdr_stream *xdr) 4949 { 4950 return decode_op_hdr(xdr, OP_RENEW); 4951 } 4952 4953 static int 4954 decode_restorefh(struct xdr_stream *xdr) 4955 { 4956 return decode_op_hdr(xdr, OP_RESTOREFH); 4957 } 4958 4959 static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req, 4960 size_t *acl_len) 4961 { 4962 __be32 *savep; 4963 uint32_t attrlen, 4964 bitmap[3] = {0}; 4965 struct kvec *iov = req->rq_rcv_buf.head; 4966 int status; 4967 4968 *acl_len = 0; 4969 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) 4970 goto out; 4971 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) 4972 goto out; 4973 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) 4974 goto out; 4975 4976 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACL - 1U))) 4977 return -EIO; 4978 if (likely(bitmap[0] & FATTR4_WORD0_ACL)) { 4979 size_t hdrlen; 4980 u32 recvd; 4981 4982 /* We ignore &savep and don't do consistency checks on 4983 * the attr length. Let userspace figure it out.... */ 4984 hdrlen = (u8 *)xdr->p - (u8 *)iov->iov_base; 4985 recvd = req->rq_rcv_buf.len - hdrlen; 4986 if (attrlen > recvd) { 4987 dprintk("NFS: server cheating in getattr" 4988 " acl reply: attrlen %u > recvd %u\n", 4989 attrlen, recvd); 4990 return -EINVAL; 4991 } 4992 xdr_read_pages(xdr, attrlen); 4993 *acl_len = attrlen; 4994 } else 4995 status = -EOPNOTSUPP; 4996 4997 out: 4998 return status; 4999 } 5000 5001 static int 5002 decode_savefh(struct xdr_stream *xdr) 5003 { 5004 return decode_op_hdr(xdr, OP_SAVEFH); 5005 } 5006 5007 static int decode_setattr(struct xdr_stream *xdr) 5008 { 5009 __be32 *p; 5010 uint32_t bmlen; 5011 int status; 5012 5013 status = decode_op_hdr(xdr, OP_SETATTR); 5014 if (status) 5015 return status; 5016 p = xdr_inline_decode(xdr, 4); 5017 if (unlikely(!p)) 5018 goto out_overflow; 5019 bmlen = be32_to_cpup(p); 5020 p = xdr_inline_decode(xdr, bmlen << 2); 5021 if (likely(p)) 5022 return 0; 5023 out_overflow: 5024 print_overflow_msg(__func__, xdr); 5025 return -EIO; 5026 } 5027 5028 static int decode_setclientid(struct xdr_stream *xdr, struct nfs4_setclientid_res *res) 5029 { 5030 __be32 *p; 5031 uint32_t opnum; 5032 int32_t nfserr; 5033 5034 p = xdr_inline_decode(xdr, 8); 5035 if (unlikely(!p)) 5036 goto out_overflow; 5037 opnum = be32_to_cpup(p++); 5038 if (opnum != OP_SETCLIENTID) { 5039 dprintk("nfs: decode_setclientid: Server returned operation" 5040 " %d\n", opnum); 5041 return -EIO; 5042 } 5043 nfserr = be32_to_cpup(p); 5044 if (nfserr == NFS_OK) { 5045 p = xdr_inline_decode(xdr, 8 + NFS4_VERIFIER_SIZE); 5046 if (unlikely(!p)) 5047 goto out_overflow; 5048 p = xdr_decode_hyper(p, &res->clientid); 5049 memcpy(res->confirm.data, p, NFS4_VERIFIER_SIZE); 5050 } else if (nfserr == NFSERR_CLID_INUSE) { 5051 uint32_t len; 5052 5053 /* skip netid string */ 5054 p = xdr_inline_decode(xdr, 4); 5055 if (unlikely(!p)) 5056 goto out_overflow; 5057 len = be32_to_cpup(p); 5058 p = xdr_inline_decode(xdr, len); 5059 if (unlikely(!p)) 5060 goto out_overflow; 5061 5062 /* skip uaddr string */ 5063 p = xdr_inline_decode(xdr, 4); 5064 if (unlikely(!p)) 5065 goto out_overflow; 5066 len = be32_to_cpup(p); 5067 p = xdr_inline_decode(xdr, len); 5068 if (unlikely(!p)) 5069 goto out_overflow; 5070 return -NFSERR_CLID_INUSE; 5071 } else 5072 return nfs4_stat_to_errno(nfserr); 5073 5074 return 0; 5075 out_overflow: 5076 print_overflow_msg(__func__, xdr); 5077 return -EIO; 5078 } 5079 5080 static int decode_setclientid_confirm(struct xdr_stream *xdr) 5081 { 5082 return decode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM); 5083 } 5084 5085 static int decode_write(struct xdr_stream *xdr, struct nfs_writeres *res) 5086 { 5087 __be32 *p; 5088 int status; 5089 5090 status = decode_op_hdr(xdr, OP_WRITE); 5091 if (status) 5092 return status; 5093 5094 p = xdr_inline_decode(xdr, 16); 5095 if (unlikely(!p)) 5096 goto out_overflow; 5097 res->count = be32_to_cpup(p++); 5098 res->verf->committed = be32_to_cpup(p++); 5099 memcpy(res->verf->verifier, p, 8); 5100 return 0; 5101 out_overflow: 5102 print_overflow_msg(__func__, xdr); 5103 return -EIO; 5104 } 5105 5106 static int decode_delegreturn(struct xdr_stream *xdr) 5107 { 5108 return decode_op_hdr(xdr, OP_DELEGRETURN); 5109 } 5110 5111 static int decode_secinfo_gss(struct xdr_stream *xdr, struct nfs4_secinfo_flavor *flavor) 5112 { 5113 __be32 *p; 5114 5115 p = xdr_inline_decode(xdr, 4); 5116 if (unlikely(!p)) 5117 goto out_overflow; 5118 flavor->gss.sec_oid4.len = be32_to_cpup(p); 5119 if (flavor->gss.sec_oid4.len > GSS_OID_MAX_LEN) 5120 goto out_err; 5121 5122 p = xdr_inline_decode(xdr, flavor->gss.sec_oid4.len); 5123 if (unlikely(!p)) 5124 goto out_overflow; 5125 memcpy(flavor->gss.sec_oid4.data, p, flavor->gss.sec_oid4.len); 5126 5127 p = xdr_inline_decode(xdr, 8); 5128 if (unlikely(!p)) 5129 goto out_overflow; 5130 flavor->gss.qop4 = be32_to_cpup(p++); 5131 flavor->gss.service = be32_to_cpup(p); 5132 5133 return 0; 5134 5135 out_overflow: 5136 print_overflow_msg(__func__, xdr); 5137 return -EIO; 5138 out_err: 5139 return -EINVAL; 5140 } 5141 5142 static int decode_secinfo(struct xdr_stream *xdr, struct nfs4_secinfo_res *res) 5143 { 5144 struct nfs4_secinfo_flavor *sec_flavor; 5145 int status; 5146 __be32 *p; 5147 int i, num_flavors; 5148 5149 status = decode_op_hdr(xdr, OP_SECINFO); 5150 if (status) 5151 goto out; 5152 p = xdr_inline_decode(xdr, 4); 5153 if (unlikely(!p)) 5154 goto out_overflow; 5155 5156 res->flavors->num_flavors = 0; 5157 num_flavors = be32_to_cpup(p); 5158 5159 for (i = 0; i < num_flavors; i++) { 5160 sec_flavor = &res->flavors->flavors[i]; 5161 if ((char *)&sec_flavor[1] - (char *)res->flavors > PAGE_SIZE) 5162 break; 5163 5164 p = xdr_inline_decode(xdr, 4); 5165 if (unlikely(!p)) 5166 goto out_overflow; 5167 sec_flavor->flavor = be32_to_cpup(p); 5168 5169 if (sec_flavor->flavor == RPC_AUTH_GSS) { 5170 status = decode_secinfo_gss(xdr, sec_flavor); 5171 if (status) 5172 goto out; 5173 } 5174 res->flavors->num_flavors++; 5175 } 5176 5177 out: 5178 return status; 5179 out_overflow: 5180 print_overflow_msg(__func__, xdr); 5181 return -EIO; 5182 } 5183 5184 #if defined(CONFIG_NFS_V4_1) 5185 static int decode_exchange_id(struct xdr_stream *xdr, 5186 struct nfs41_exchange_id_res *res) 5187 { 5188 __be32 *p; 5189 uint32_t dummy; 5190 char *dummy_str; 5191 int status; 5192 struct nfs_client *clp = res->client; 5193 5194 status = decode_op_hdr(xdr, OP_EXCHANGE_ID); 5195 if (status) 5196 return status; 5197 5198 p = xdr_inline_decode(xdr, 8); 5199 if (unlikely(!p)) 5200 goto out_overflow; 5201 xdr_decode_hyper(p, &clp->cl_clientid); 5202 p = xdr_inline_decode(xdr, 12); 5203 if (unlikely(!p)) 5204 goto out_overflow; 5205 clp->cl_seqid = be32_to_cpup(p++); 5206 clp->cl_exchange_flags = be32_to_cpup(p++); 5207 5208 /* We ask for SP4_NONE */ 5209 dummy = be32_to_cpup(p); 5210 if (dummy != SP4_NONE) 5211 return -EIO; 5212 5213 /* Throw away minor_id */ 5214 p = xdr_inline_decode(xdr, 8); 5215 if (unlikely(!p)) 5216 goto out_overflow; 5217 5218 /* Throw away Major id */ 5219 status = decode_opaque_inline(xdr, &dummy, &dummy_str); 5220 if (unlikely(status)) 5221 return status; 5222 5223 /* Save server_scope */ 5224 status = decode_opaque_inline(xdr, &dummy, &dummy_str); 5225 if (unlikely(status)) 5226 return status; 5227 5228 if (unlikely(dummy > NFS4_OPAQUE_LIMIT)) 5229 return -EIO; 5230 5231 memcpy(res->server_scope->server_scope, dummy_str, dummy); 5232 res->server_scope->server_scope_sz = dummy; 5233 5234 /* Throw away Implementation id array */ 5235 status = decode_opaque_inline(xdr, &dummy, &dummy_str); 5236 if (unlikely(status)) 5237 return status; 5238 5239 return 0; 5240 out_overflow: 5241 print_overflow_msg(__func__, xdr); 5242 return -EIO; 5243 } 5244 5245 static int decode_chan_attrs(struct xdr_stream *xdr, 5246 struct nfs4_channel_attrs *attrs) 5247 { 5248 __be32 *p; 5249 u32 nr_attrs, val; 5250 5251 p = xdr_inline_decode(xdr, 28); 5252 if (unlikely(!p)) 5253 goto out_overflow; 5254 val = be32_to_cpup(p++); /* headerpadsz */ 5255 if (val) 5256 return -EINVAL; /* no support for header padding yet */ 5257 attrs->max_rqst_sz = be32_to_cpup(p++); 5258 attrs->max_resp_sz = be32_to_cpup(p++); 5259 attrs->max_resp_sz_cached = be32_to_cpup(p++); 5260 attrs->max_ops = be32_to_cpup(p++); 5261 attrs->max_reqs = be32_to_cpup(p++); 5262 nr_attrs = be32_to_cpup(p); 5263 if (unlikely(nr_attrs > 1)) { 5264 printk(KERN_WARNING "%s: Invalid rdma channel attrs count %u\n", 5265 __func__, nr_attrs); 5266 return -EINVAL; 5267 } 5268 if (nr_attrs == 1) { 5269 p = xdr_inline_decode(xdr, 4); /* skip rdma_attrs */ 5270 if (unlikely(!p)) 5271 goto out_overflow; 5272 } 5273 return 0; 5274 out_overflow: 5275 print_overflow_msg(__func__, xdr); 5276 return -EIO; 5277 } 5278 5279 static int decode_sessionid(struct xdr_stream *xdr, struct nfs4_sessionid *sid) 5280 { 5281 return decode_opaque_fixed(xdr, sid->data, NFS4_MAX_SESSIONID_LEN); 5282 } 5283 5284 static int decode_create_session(struct xdr_stream *xdr, 5285 struct nfs41_create_session_res *res) 5286 { 5287 __be32 *p; 5288 int status; 5289 struct nfs_client *clp = res->client; 5290 struct nfs4_session *session = clp->cl_session; 5291 5292 status = decode_op_hdr(xdr, OP_CREATE_SESSION); 5293 if (!status) 5294 status = decode_sessionid(xdr, &session->sess_id); 5295 if (unlikely(status)) 5296 return status; 5297 5298 /* seqid, flags */ 5299 p = xdr_inline_decode(xdr, 8); 5300 if (unlikely(!p)) 5301 goto out_overflow; 5302 clp->cl_seqid = be32_to_cpup(p++); 5303 session->flags = be32_to_cpup(p); 5304 5305 /* Channel attributes */ 5306 status = decode_chan_attrs(xdr, &session->fc_attrs); 5307 if (!status) 5308 status = decode_chan_attrs(xdr, &session->bc_attrs); 5309 return status; 5310 out_overflow: 5311 print_overflow_msg(__func__, xdr); 5312 return -EIO; 5313 } 5314 5315 static int decode_destroy_session(struct xdr_stream *xdr, void *dummy) 5316 { 5317 return decode_op_hdr(xdr, OP_DESTROY_SESSION); 5318 } 5319 5320 static int decode_reclaim_complete(struct xdr_stream *xdr, void *dummy) 5321 { 5322 return decode_op_hdr(xdr, OP_RECLAIM_COMPLETE); 5323 } 5324 #endif /* CONFIG_NFS_V4_1 */ 5325 5326 static int decode_sequence(struct xdr_stream *xdr, 5327 struct nfs4_sequence_res *res, 5328 struct rpc_rqst *rqstp) 5329 { 5330 #if defined(CONFIG_NFS_V4_1) 5331 struct nfs4_sessionid id; 5332 u32 dummy; 5333 int status; 5334 __be32 *p; 5335 5336 if (!res->sr_session) 5337 return 0; 5338 5339 status = decode_op_hdr(xdr, OP_SEQUENCE); 5340 if (!status) 5341 status = decode_sessionid(xdr, &id); 5342 if (unlikely(status)) 5343 goto out_err; 5344 5345 /* 5346 * If the server returns different values for sessionID, slotID or 5347 * sequence number, the server is looney tunes. 5348 */ 5349 status = -EREMOTEIO; 5350 5351 if (memcmp(id.data, res->sr_session->sess_id.data, 5352 NFS4_MAX_SESSIONID_LEN)) { 5353 dprintk("%s Invalid session id\n", __func__); 5354 goto out_err; 5355 } 5356 5357 p = xdr_inline_decode(xdr, 20); 5358 if (unlikely(!p)) 5359 goto out_overflow; 5360 5361 /* seqid */ 5362 dummy = be32_to_cpup(p++); 5363 if (dummy != res->sr_slot->seq_nr) { 5364 dprintk("%s Invalid sequence number\n", __func__); 5365 goto out_err; 5366 } 5367 /* slot id */ 5368 dummy = be32_to_cpup(p++); 5369 if (dummy != res->sr_slot - res->sr_session->fc_slot_table.slots) { 5370 dprintk("%s Invalid slot id\n", __func__); 5371 goto out_err; 5372 } 5373 /* highest slot id - currently not processed */ 5374 dummy = be32_to_cpup(p++); 5375 /* target highest slot id - currently not processed */ 5376 dummy = be32_to_cpup(p++); 5377 /* result flags */ 5378 res->sr_status_flags = be32_to_cpup(p); 5379 status = 0; 5380 out_err: 5381 res->sr_status = status; 5382 return status; 5383 out_overflow: 5384 print_overflow_msg(__func__, xdr); 5385 status = -EIO; 5386 goto out_err; 5387 #else /* CONFIG_NFS_V4_1 */ 5388 return 0; 5389 #endif /* CONFIG_NFS_V4_1 */ 5390 } 5391 5392 #if defined(CONFIG_NFS_V4_1) 5393 /* 5394 * TODO: Need to handle case when EOF != true; 5395 */ 5396 static int decode_getdevicelist(struct xdr_stream *xdr, 5397 struct pnfs_devicelist *res) 5398 { 5399 __be32 *p; 5400 int status, i; 5401 struct nfs_writeverf verftemp; 5402 5403 status = decode_op_hdr(xdr, OP_GETDEVICELIST); 5404 if (status) 5405 return status; 5406 5407 p = xdr_inline_decode(xdr, 8 + 8 + 4); 5408 if (unlikely(!p)) 5409 goto out_overflow; 5410 5411 /* TODO: Skip cookie for now */ 5412 p += 2; 5413 5414 /* Read verifier */ 5415 p = xdr_decode_opaque_fixed(p, verftemp.verifier, 8); 5416 5417 res->num_devs = be32_to_cpup(p); 5418 5419 dprintk("%s: num_dev %d\n", __func__, res->num_devs); 5420 5421 if (res->num_devs > NFS4_PNFS_GETDEVLIST_MAXNUM) { 5422 printk(KERN_ERR "%s too many result dev_num %u\n", 5423 __func__, res->num_devs); 5424 return -EIO; 5425 } 5426 5427 p = xdr_inline_decode(xdr, 5428 res->num_devs * NFS4_DEVICEID4_SIZE + 4); 5429 if (unlikely(!p)) 5430 goto out_overflow; 5431 for (i = 0; i < res->num_devs; i++) 5432 p = xdr_decode_opaque_fixed(p, res->dev_id[i].data, 5433 NFS4_DEVICEID4_SIZE); 5434 res->eof = be32_to_cpup(p); 5435 return 0; 5436 out_overflow: 5437 print_overflow_msg(__func__, xdr); 5438 return -EIO; 5439 } 5440 5441 static int decode_getdeviceinfo(struct xdr_stream *xdr, 5442 struct pnfs_device *pdev) 5443 { 5444 __be32 *p; 5445 uint32_t len, type; 5446 int status; 5447 5448 status = decode_op_hdr(xdr, OP_GETDEVICEINFO); 5449 if (status) { 5450 if (status == -ETOOSMALL) { 5451 p = xdr_inline_decode(xdr, 4); 5452 if (unlikely(!p)) 5453 goto out_overflow; 5454 pdev->mincount = be32_to_cpup(p); 5455 dprintk("%s: Min count too small. mincnt = %u\n", 5456 __func__, pdev->mincount); 5457 } 5458 return status; 5459 } 5460 5461 p = xdr_inline_decode(xdr, 8); 5462 if (unlikely(!p)) 5463 goto out_overflow; 5464 type = be32_to_cpup(p++); 5465 if (type != pdev->layout_type) { 5466 dprintk("%s: layout mismatch req: %u pdev: %u\n", 5467 __func__, pdev->layout_type, type); 5468 return -EINVAL; 5469 } 5470 /* 5471 * Get the length of the opaque device_addr4. xdr_read_pages places 5472 * the opaque device_addr4 in the xdr_buf->pages (pnfs_device->pages) 5473 * and places the remaining xdr data in xdr_buf->tail 5474 */ 5475 pdev->mincount = be32_to_cpup(p); 5476 xdr_read_pages(xdr, pdev->mincount); /* include space for the length */ 5477 5478 /* Parse notification bitmap, verifying that it is zero. */ 5479 p = xdr_inline_decode(xdr, 4); 5480 if (unlikely(!p)) 5481 goto out_overflow; 5482 len = be32_to_cpup(p); 5483 if (len) { 5484 uint32_t i; 5485 5486 p = xdr_inline_decode(xdr, 4 * len); 5487 if (unlikely(!p)) 5488 goto out_overflow; 5489 for (i = 0; i < len; i++, p++) { 5490 if (be32_to_cpup(p)) { 5491 dprintk("%s: notifications not supported\n", 5492 __func__); 5493 return -EIO; 5494 } 5495 } 5496 } 5497 return 0; 5498 out_overflow: 5499 print_overflow_msg(__func__, xdr); 5500 return -EIO; 5501 } 5502 5503 static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req, 5504 struct nfs4_layoutget_res *res) 5505 { 5506 __be32 *p; 5507 int status; 5508 u32 layout_count; 5509 struct xdr_buf *rcvbuf = &req->rq_rcv_buf; 5510 struct kvec *iov = rcvbuf->head; 5511 u32 hdrlen, recvd; 5512 5513 status = decode_op_hdr(xdr, OP_LAYOUTGET); 5514 if (status) 5515 return status; 5516 p = xdr_inline_decode(xdr, 8 + NFS4_STATEID_SIZE); 5517 if (unlikely(!p)) 5518 goto out_overflow; 5519 res->return_on_close = be32_to_cpup(p++); 5520 p = xdr_decode_opaque_fixed(p, res->stateid.data, NFS4_STATEID_SIZE); 5521 layout_count = be32_to_cpup(p); 5522 if (!layout_count) { 5523 dprintk("%s: server responded with empty layout array\n", 5524 __func__); 5525 return -EINVAL; 5526 } 5527 5528 p = xdr_inline_decode(xdr, 28); 5529 if (unlikely(!p)) 5530 goto out_overflow; 5531 p = xdr_decode_hyper(p, &res->range.offset); 5532 p = xdr_decode_hyper(p, &res->range.length); 5533 res->range.iomode = be32_to_cpup(p++); 5534 res->type = be32_to_cpup(p++); 5535 res->layoutp->len = be32_to_cpup(p); 5536 5537 dprintk("%s roff:%lu rlen:%lu riomode:%d, lo_type:0x%x, lo.len:%d\n", 5538 __func__, 5539 (unsigned long)res->range.offset, 5540 (unsigned long)res->range.length, 5541 res->range.iomode, 5542 res->type, 5543 res->layoutp->len); 5544 5545 hdrlen = (u8 *) xdr->p - (u8 *) iov->iov_base; 5546 recvd = req->rq_rcv_buf.len - hdrlen; 5547 if (res->layoutp->len > recvd) { 5548 dprintk("NFS: server cheating in layoutget reply: " 5549 "layout len %u > recvd %u\n", 5550 res->layoutp->len, recvd); 5551 return -EINVAL; 5552 } 5553 5554 xdr_read_pages(xdr, res->layoutp->len); 5555 5556 if (layout_count > 1) { 5557 /* We only handle a length one array at the moment. Any 5558 * further entries are just ignored. Note that this means 5559 * the client may see a response that is less than the 5560 * minimum it requested. 5561 */ 5562 dprintk("%s: server responded with %d layouts, dropping tail\n", 5563 __func__, layout_count); 5564 } 5565 5566 return 0; 5567 out_overflow: 5568 print_overflow_msg(__func__, xdr); 5569 return -EIO; 5570 } 5571 5572 static int decode_layoutreturn(struct xdr_stream *xdr, 5573 struct nfs4_layoutreturn_res *res) 5574 { 5575 __be32 *p; 5576 int status; 5577 5578 status = decode_op_hdr(xdr, OP_LAYOUTRETURN); 5579 if (status) 5580 return status; 5581 p = xdr_inline_decode(xdr, 4); 5582 if (unlikely(!p)) 5583 goto out_overflow; 5584 res->lrs_present = be32_to_cpup(p); 5585 if (res->lrs_present) 5586 status = decode_stateid(xdr, &res->stateid); 5587 return status; 5588 out_overflow: 5589 print_overflow_msg(__func__, xdr); 5590 return -EIO; 5591 } 5592 5593 static int decode_layoutcommit(struct xdr_stream *xdr, 5594 struct rpc_rqst *req, 5595 struct nfs4_layoutcommit_res *res) 5596 { 5597 __be32 *p; 5598 __u32 sizechanged; 5599 int status; 5600 5601 status = decode_op_hdr(xdr, OP_LAYOUTCOMMIT); 5602 res->status = status; 5603 if (status) 5604 return status; 5605 5606 p = xdr_inline_decode(xdr, 4); 5607 if (unlikely(!p)) 5608 goto out_overflow; 5609 sizechanged = be32_to_cpup(p); 5610 5611 if (sizechanged) { 5612 /* throw away new size */ 5613 p = xdr_inline_decode(xdr, 8); 5614 if (unlikely(!p)) 5615 goto out_overflow; 5616 } 5617 return 0; 5618 out_overflow: 5619 print_overflow_msg(__func__, xdr); 5620 return -EIO; 5621 } 5622 5623 static int decode_test_stateid(struct xdr_stream *xdr, 5624 struct nfs41_test_stateid_res *res) 5625 { 5626 __be32 *p; 5627 int status; 5628 int num_res; 5629 5630 status = decode_op_hdr(xdr, OP_TEST_STATEID); 5631 if (status) 5632 return status; 5633 5634 p = xdr_inline_decode(xdr, 4); 5635 if (unlikely(!p)) 5636 goto out_overflow; 5637 num_res = be32_to_cpup(p++); 5638 if (num_res != 1) 5639 goto out; 5640 5641 p = xdr_inline_decode(xdr, 4); 5642 if (unlikely(!p)) 5643 goto out_overflow; 5644 res->status = be32_to_cpup(p++); 5645 return res->status; 5646 out_overflow: 5647 print_overflow_msg(__func__, xdr); 5648 out: 5649 return -EIO; 5650 } 5651 5652 static int decode_free_stateid(struct xdr_stream *xdr, 5653 struct nfs41_free_stateid_res *res) 5654 { 5655 __be32 *p; 5656 int status; 5657 5658 status = decode_op_hdr(xdr, OP_FREE_STATEID); 5659 if (status) 5660 return status; 5661 5662 p = xdr_inline_decode(xdr, 4); 5663 if (unlikely(!p)) 5664 goto out_overflow; 5665 res->status = be32_to_cpup(p++); 5666 return res->status; 5667 out_overflow: 5668 print_overflow_msg(__func__, xdr); 5669 return -EIO; 5670 } 5671 #endif /* CONFIG_NFS_V4_1 */ 5672 5673 /* 5674 * END OF "GENERIC" DECODE ROUTINES. 5675 */ 5676 5677 /* 5678 * Decode OPEN_DOWNGRADE response 5679 */ 5680 static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp, 5681 struct xdr_stream *xdr, 5682 struct nfs_closeres *res) 5683 { 5684 struct compound_hdr hdr; 5685 int status; 5686 5687 status = decode_compound_hdr(xdr, &hdr); 5688 if (status) 5689 goto out; 5690 status = decode_sequence(xdr, &res->seq_res, rqstp); 5691 if (status) 5692 goto out; 5693 status = decode_putfh(xdr); 5694 if (status) 5695 goto out; 5696 status = decode_open_downgrade(xdr, res); 5697 if (status != 0) 5698 goto out; 5699 decode_getfattr(xdr, res->fattr, res->server, 5700 !RPC_IS_ASYNC(rqstp->rq_task)); 5701 out: 5702 return status; 5703 } 5704 5705 /* 5706 * Decode ACCESS response 5707 */ 5708 static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 5709 struct nfs4_accessres *res) 5710 { 5711 struct compound_hdr hdr; 5712 int status; 5713 5714 status = decode_compound_hdr(xdr, &hdr); 5715 if (status) 5716 goto out; 5717 status = decode_sequence(xdr, &res->seq_res, rqstp); 5718 if (status) 5719 goto out; 5720 status = decode_putfh(xdr); 5721 if (status != 0) 5722 goto out; 5723 status = decode_access(xdr, res); 5724 if (status != 0) 5725 goto out; 5726 decode_getfattr(xdr, res->fattr, res->server, 5727 !RPC_IS_ASYNC(rqstp->rq_task)); 5728 out: 5729 return status; 5730 } 5731 5732 /* 5733 * Decode LOOKUP response 5734 */ 5735 static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 5736 struct nfs4_lookup_res *res) 5737 { 5738 struct compound_hdr hdr; 5739 int status; 5740 5741 status = decode_compound_hdr(xdr, &hdr); 5742 if (status) 5743 goto out; 5744 status = decode_sequence(xdr, &res->seq_res, rqstp); 5745 if (status) 5746 goto out; 5747 status = decode_putfh(xdr); 5748 if (status) 5749 goto out; 5750 status = decode_lookup(xdr); 5751 if (status) 5752 goto out; 5753 status = decode_getfh(xdr, res->fh); 5754 if (status) 5755 goto out; 5756 status = decode_getfattr(xdr, res->fattr, res->server 5757 ,!RPC_IS_ASYNC(rqstp->rq_task)); 5758 out: 5759 return status; 5760 } 5761 5762 /* 5763 * Decode LOOKUP_ROOT response 5764 */ 5765 static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp, 5766 struct xdr_stream *xdr, 5767 struct nfs4_lookup_res *res) 5768 { 5769 struct compound_hdr hdr; 5770 int status; 5771 5772 status = decode_compound_hdr(xdr, &hdr); 5773 if (status) 5774 goto out; 5775 status = decode_sequence(xdr, &res->seq_res, rqstp); 5776 if (status) 5777 goto out; 5778 status = decode_putrootfh(xdr); 5779 if (status) 5780 goto out; 5781 status = decode_getfh(xdr, res->fh); 5782 if (status == 0) 5783 status = decode_getfattr(xdr, res->fattr, res->server, 5784 !RPC_IS_ASYNC(rqstp->rq_task)); 5785 out: 5786 return status; 5787 } 5788 5789 /* 5790 * Decode REMOVE response 5791 */ 5792 static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 5793 struct nfs_removeres *res) 5794 { 5795 struct compound_hdr hdr; 5796 int status; 5797 5798 status = decode_compound_hdr(xdr, &hdr); 5799 if (status) 5800 goto out; 5801 status = decode_sequence(xdr, &res->seq_res, rqstp); 5802 if (status) 5803 goto out; 5804 status = decode_putfh(xdr); 5805 if (status) 5806 goto out; 5807 status = decode_remove(xdr, &res->cinfo); 5808 if (status) 5809 goto out; 5810 decode_getfattr(xdr, res->dir_attr, res->server, 5811 !RPC_IS_ASYNC(rqstp->rq_task)); 5812 out: 5813 return status; 5814 } 5815 5816 /* 5817 * Decode RENAME response 5818 */ 5819 static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 5820 struct nfs_renameres *res) 5821 { 5822 struct compound_hdr hdr; 5823 int status; 5824 5825 status = decode_compound_hdr(xdr, &hdr); 5826 if (status) 5827 goto out; 5828 status = decode_sequence(xdr, &res->seq_res, rqstp); 5829 if (status) 5830 goto out; 5831 status = decode_putfh(xdr); 5832 if (status) 5833 goto out; 5834 status = decode_savefh(xdr); 5835 if (status) 5836 goto out; 5837 status = decode_putfh(xdr); 5838 if (status) 5839 goto out; 5840 status = decode_rename(xdr, &res->old_cinfo, &res->new_cinfo); 5841 if (status) 5842 goto out; 5843 /* Current FH is target directory */ 5844 if (decode_getfattr(xdr, res->new_fattr, res->server, 5845 !RPC_IS_ASYNC(rqstp->rq_task)) != 0) 5846 goto out; 5847 status = decode_restorefh(xdr); 5848 if (status) 5849 goto out; 5850 decode_getfattr(xdr, res->old_fattr, res->server, 5851 !RPC_IS_ASYNC(rqstp->rq_task)); 5852 out: 5853 return status; 5854 } 5855 5856 /* 5857 * Decode LINK response 5858 */ 5859 static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 5860 struct nfs4_link_res *res) 5861 { 5862 struct compound_hdr hdr; 5863 int status; 5864 5865 status = decode_compound_hdr(xdr, &hdr); 5866 if (status) 5867 goto out; 5868 status = decode_sequence(xdr, &res->seq_res, rqstp); 5869 if (status) 5870 goto out; 5871 status = decode_putfh(xdr); 5872 if (status) 5873 goto out; 5874 status = decode_savefh(xdr); 5875 if (status) 5876 goto out; 5877 status = decode_putfh(xdr); 5878 if (status) 5879 goto out; 5880 status = decode_link(xdr, &res->cinfo); 5881 if (status) 5882 goto out; 5883 /* 5884 * Note order: OP_LINK leaves the directory as the current 5885 * filehandle. 5886 */ 5887 if (decode_getfattr(xdr, res->dir_attr, res->server, 5888 !RPC_IS_ASYNC(rqstp->rq_task)) != 0) 5889 goto out; 5890 status = decode_restorefh(xdr); 5891 if (status) 5892 goto out; 5893 decode_getfattr(xdr, res->fattr, res->server, 5894 !RPC_IS_ASYNC(rqstp->rq_task)); 5895 out: 5896 return status; 5897 } 5898 5899 /* 5900 * Decode CREATE response 5901 */ 5902 static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 5903 struct nfs4_create_res *res) 5904 { 5905 struct compound_hdr hdr; 5906 int status; 5907 5908 status = decode_compound_hdr(xdr, &hdr); 5909 if (status) 5910 goto out; 5911 status = decode_sequence(xdr, &res->seq_res, rqstp); 5912 if (status) 5913 goto out; 5914 status = decode_putfh(xdr); 5915 if (status) 5916 goto out; 5917 status = decode_savefh(xdr); 5918 if (status) 5919 goto out; 5920 status = decode_create(xdr, &res->dir_cinfo); 5921 if (status) 5922 goto out; 5923 status = decode_getfh(xdr, res->fh); 5924 if (status) 5925 goto out; 5926 if (decode_getfattr(xdr, res->fattr, res->server, 5927 !RPC_IS_ASYNC(rqstp->rq_task)) != 0) 5928 goto out; 5929 status = decode_restorefh(xdr); 5930 if (status) 5931 goto out; 5932 decode_getfattr(xdr, res->dir_fattr, res->server, 5933 !RPC_IS_ASYNC(rqstp->rq_task)); 5934 out: 5935 return status; 5936 } 5937 5938 /* 5939 * Decode SYMLINK response 5940 */ 5941 static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 5942 struct nfs4_create_res *res) 5943 { 5944 return nfs4_xdr_dec_create(rqstp, xdr, res); 5945 } 5946 5947 /* 5948 * Decode GETATTR response 5949 */ 5950 static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 5951 struct nfs4_getattr_res *res) 5952 { 5953 struct compound_hdr hdr; 5954 int status; 5955 5956 status = decode_compound_hdr(xdr, &hdr); 5957 if (status) 5958 goto out; 5959 status = decode_sequence(xdr, &res->seq_res, rqstp); 5960 if (status) 5961 goto out; 5962 status = decode_putfh(xdr); 5963 if (status) 5964 goto out; 5965 status = decode_getfattr(xdr, res->fattr, res->server, 5966 !RPC_IS_ASYNC(rqstp->rq_task)); 5967 out: 5968 return status; 5969 } 5970 5971 /* 5972 * Encode an SETACL request 5973 */ 5974 static void nfs4_xdr_enc_setacl(struct rpc_rqst *req, struct xdr_stream *xdr, 5975 struct nfs_setaclargs *args) 5976 { 5977 struct compound_hdr hdr = { 5978 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 5979 }; 5980 5981 encode_compound_hdr(xdr, req, &hdr); 5982 encode_sequence(xdr, &args->seq_args, &hdr); 5983 encode_putfh(xdr, args->fh, &hdr); 5984 encode_setacl(xdr, args, &hdr); 5985 encode_nops(&hdr); 5986 } 5987 5988 /* 5989 * Decode SETACL response 5990 */ 5991 static int 5992 nfs4_xdr_dec_setacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 5993 struct nfs_setaclres *res) 5994 { 5995 struct compound_hdr hdr; 5996 int status; 5997 5998 status = decode_compound_hdr(xdr, &hdr); 5999 if (status) 6000 goto out; 6001 status = decode_sequence(xdr, &res->seq_res, rqstp); 6002 if (status) 6003 goto out; 6004 status = decode_putfh(xdr); 6005 if (status) 6006 goto out; 6007 status = decode_setattr(xdr); 6008 out: 6009 return status; 6010 } 6011 6012 /* 6013 * Decode GETACL response 6014 */ 6015 static int 6016 nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6017 struct nfs_getaclres *res) 6018 { 6019 struct compound_hdr hdr; 6020 int status; 6021 6022 status = decode_compound_hdr(xdr, &hdr); 6023 if (status) 6024 goto out; 6025 status = decode_sequence(xdr, &res->seq_res, rqstp); 6026 if (status) 6027 goto out; 6028 status = decode_putfh(xdr); 6029 if (status) 6030 goto out; 6031 status = decode_getacl(xdr, rqstp, &res->acl_len); 6032 6033 out: 6034 return status; 6035 } 6036 6037 /* 6038 * Decode CLOSE response 6039 */ 6040 static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6041 struct nfs_closeres *res) 6042 { 6043 struct compound_hdr hdr; 6044 int status; 6045 6046 status = decode_compound_hdr(xdr, &hdr); 6047 if (status) 6048 goto out; 6049 status = decode_sequence(xdr, &res->seq_res, rqstp); 6050 if (status) 6051 goto out; 6052 status = decode_putfh(xdr); 6053 if (status) 6054 goto out; 6055 status = decode_close(xdr, res); 6056 if (status != 0) 6057 goto out; 6058 /* 6059 * Note: Server may do delete on close for this file 6060 * in which case the getattr call will fail with 6061 * an ESTALE error. Shouldn't be a problem, 6062 * though, since fattr->valid will remain unset. 6063 */ 6064 decode_getfattr(xdr, res->fattr, res->server, 6065 !RPC_IS_ASYNC(rqstp->rq_task)); 6066 out: 6067 return status; 6068 } 6069 6070 /* 6071 * Decode OPEN response 6072 */ 6073 static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6074 struct nfs_openres *res) 6075 { 6076 struct compound_hdr hdr; 6077 int status; 6078 6079 status = decode_compound_hdr(xdr, &hdr); 6080 if (status) 6081 goto out; 6082 status = decode_sequence(xdr, &res->seq_res, rqstp); 6083 if (status) 6084 goto out; 6085 status = decode_putfh(xdr); 6086 if (status) 6087 goto out; 6088 status = decode_savefh(xdr); 6089 if (status) 6090 goto out; 6091 status = decode_open(xdr, res); 6092 if (status) 6093 goto out; 6094 if (decode_getfh(xdr, &res->fh) != 0) 6095 goto out; 6096 if (decode_getfattr(xdr, res->f_attr, res->server, 6097 !RPC_IS_ASYNC(rqstp->rq_task)) != 0) 6098 goto out; 6099 if (decode_restorefh(xdr) != 0) 6100 goto out; 6101 decode_getfattr(xdr, res->dir_attr, res->server, 6102 !RPC_IS_ASYNC(rqstp->rq_task)); 6103 out: 6104 return status; 6105 } 6106 6107 /* 6108 * Decode OPEN_CONFIRM response 6109 */ 6110 static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp, 6111 struct xdr_stream *xdr, 6112 struct nfs_open_confirmres *res) 6113 { 6114 struct compound_hdr hdr; 6115 int status; 6116 6117 status = decode_compound_hdr(xdr, &hdr); 6118 if (status) 6119 goto out; 6120 status = decode_putfh(xdr); 6121 if (status) 6122 goto out; 6123 status = decode_open_confirm(xdr, res); 6124 out: 6125 return status; 6126 } 6127 6128 /* 6129 * Decode OPEN response 6130 */ 6131 static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp, 6132 struct xdr_stream *xdr, 6133 struct nfs_openres *res) 6134 { 6135 struct compound_hdr hdr; 6136 int status; 6137 6138 status = decode_compound_hdr(xdr, &hdr); 6139 if (status) 6140 goto out; 6141 status = decode_sequence(xdr, &res->seq_res, rqstp); 6142 if (status) 6143 goto out; 6144 status = decode_putfh(xdr); 6145 if (status) 6146 goto out; 6147 status = decode_open(xdr, res); 6148 if (status) 6149 goto out; 6150 decode_getfattr(xdr, res->f_attr, res->server, 6151 !RPC_IS_ASYNC(rqstp->rq_task)); 6152 out: 6153 return status; 6154 } 6155 6156 /* 6157 * Decode SETATTR response 6158 */ 6159 static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp, 6160 struct xdr_stream *xdr, 6161 struct nfs_setattrres *res) 6162 { 6163 struct compound_hdr hdr; 6164 int status; 6165 6166 status = decode_compound_hdr(xdr, &hdr); 6167 if (status) 6168 goto out; 6169 status = decode_sequence(xdr, &res->seq_res, rqstp); 6170 if (status) 6171 goto out; 6172 status = decode_putfh(xdr); 6173 if (status) 6174 goto out; 6175 status = decode_setattr(xdr); 6176 if (status) 6177 goto out; 6178 decode_getfattr(xdr, res->fattr, res->server, 6179 !RPC_IS_ASYNC(rqstp->rq_task)); 6180 out: 6181 return status; 6182 } 6183 6184 /* 6185 * Decode LOCK response 6186 */ 6187 static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6188 struct nfs_lock_res *res) 6189 { 6190 struct compound_hdr hdr; 6191 int status; 6192 6193 status = decode_compound_hdr(xdr, &hdr); 6194 if (status) 6195 goto out; 6196 status = decode_sequence(xdr, &res->seq_res, rqstp); 6197 if (status) 6198 goto out; 6199 status = decode_putfh(xdr); 6200 if (status) 6201 goto out; 6202 status = decode_lock(xdr, res); 6203 out: 6204 return status; 6205 } 6206 6207 /* 6208 * Decode LOCKT response 6209 */ 6210 static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6211 struct nfs_lockt_res *res) 6212 { 6213 struct compound_hdr hdr; 6214 int status; 6215 6216 status = decode_compound_hdr(xdr, &hdr); 6217 if (status) 6218 goto out; 6219 status = decode_sequence(xdr, &res->seq_res, rqstp); 6220 if (status) 6221 goto out; 6222 status = decode_putfh(xdr); 6223 if (status) 6224 goto out; 6225 status = decode_lockt(xdr, res); 6226 out: 6227 return status; 6228 } 6229 6230 /* 6231 * Decode LOCKU response 6232 */ 6233 static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6234 struct nfs_locku_res *res) 6235 { 6236 struct compound_hdr hdr; 6237 int status; 6238 6239 status = decode_compound_hdr(xdr, &hdr); 6240 if (status) 6241 goto out; 6242 status = decode_sequence(xdr, &res->seq_res, rqstp); 6243 if (status) 6244 goto out; 6245 status = decode_putfh(xdr); 6246 if (status) 6247 goto out; 6248 status = decode_locku(xdr, res); 6249 out: 6250 return status; 6251 } 6252 6253 static int nfs4_xdr_dec_release_lockowner(struct rpc_rqst *rqstp, 6254 struct xdr_stream *xdr, void *dummy) 6255 { 6256 struct compound_hdr hdr; 6257 int status; 6258 6259 status = decode_compound_hdr(xdr, &hdr); 6260 if (!status) 6261 status = decode_release_lockowner(xdr); 6262 return status; 6263 } 6264 6265 /* 6266 * Decode READLINK response 6267 */ 6268 static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp, 6269 struct xdr_stream *xdr, 6270 struct nfs4_readlink_res *res) 6271 { 6272 struct compound_hdr hdr; 6273 int status; 6274 6275 status = decode_compound_hdr(xdr, &hdr); 6276 if (status) 6277 goto out; 6278 status = decode_sequence(xdr, &res->seq_res, rqstp); 6279 if (status) 6280 goto out; 6281 status = decode_putfh(xdr); 6282 if (status) 6283 goto out; 6284 status = decode_readlink(xdr, rqstp); 6285 out: 6286 return status; 6287 } 6288 6289 /* 6290 * Decode READDIR response 6291 */ 6292 static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6293 struct nfs4_readdir_res *res) 6294 { 6295 struct compound_hdr hdr; 6296 int status; 6297 6298 status = decode_compound_hdr(xdr, &hdr); 6299 if (status) 6300 goto out; 6301 status = decode_sequence(xdr, &res->seq_res, rqstp); 6302 if (status) 6303 goto out; 6304 status = decode_putfh(xdr); 6305 if (status) 6306 goto out; 6307 status = decode_readdir(xdr, rqstp, res); 6308 out: 6309 return status; 6310 } 6311 6312 /* 6313 * Decode Read response 6314 */ 6315 static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6316 struct nfs_readres *res) 6317 { 6318 struct compound_hdr hdr; 6319 int status; 6320 6321 status = decode_compound_hdr(xdr, &hdr); 6322 if (status) 6323 goto out; 6324 status = decode_sequence(xdr, &res->seq_res, rqstp); 6325 if (status) 6326 goto out; 6327 status = decode_putfh(xdr); 6328 if (status) 6329 goto out; 6330 status = decode_read(xdr, rqstp, res); 6331 if (!status) 6332 status = res->count; 6333 out: 6334 return status; 6335 } 6336 6337 /* 6338 * Decode WRITE response 6339 */ 6340 static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6341 struct nfs_writeres *res) 6342 { 6343 struct compound_hdr hdr; 6344 int status; 6345 6346 status = decode_compound_hdr(xdr, &hdr); 6347 if (status) 6348 goto out; 6349 status = decode_sequence(xdr, &res->seq_res, rqstp); 6350 if (status) 6351 goto out; 6352 status = decode_putfh(xdr); 6353 if (status) 6354 goto out; 6355 status = decode_write(xdr, res); 6356 if (status) 6357 goto out; 6358 if (res->fattr) 6359 decode_getfattr(xdr, res->fattr, res->server, 6360 !RPC_IS_ASYNC(rqstp->rq_task)); 6361 if (!status) 6362 status = res->count; 6363 out: 6364 return status; 6365 } 6366 6367 /* 6368 * Decode COMMIT response 6369 */ 6370 static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6371 struct nfs_writeres *res) 6372 { 6373 struct compound_hdr hdr; 6374 int status; 6375 6376 status = decode_compound_hdr(xdr, &hdr); 6377 if (status) 6378 goto out; 6379 status = decode_sequence(xdr, &res->seq_res, rqstp); 6380 if (status) 6381 goto out; 6382 status = decode_putfh(xdr); 6383 if (status) 6384 goto out; 6385 status = decode_commit(xdr, res); 6386 if (status) 6387 goto out; 6388 if (res->fattr) 6389 decode_getfattr(xdr, res->fattr, res->server, 6390 !RPC_IS_ASYNC(rqstp->rq_task)); 6391 out: 6392 return status; 6393 } 6394 6395 /* 6396 * Decode FSINFO response 6397 */ 6398 static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr, 6399 struct nfs4_fsinfo_res *res) 6400 { 6401 struct compound_hdr hdr; 6402 int status; 6403 6404 status = decode_compound_hdr(xdr, &hdr); 6405 if (!status) 6406 status = decode_sequence(xdr, &res->seq_res, req); 6407 if (!status) 6408 status = decode_putfh(xdr); 6409 if (!status) 6410 status = decode_fsinfo(xdr, res->fsinfo); 6411 return status; 6412 } 6413 6414 /* 6415 * Decode PATHCONF response 6416 */ 6417 static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr, 6418 struct nfs4_pathconf_res *res) 6419 { 6420 struct compound_hdr hdr; 6421 int status; 6422 6423 status = decode_compound_hdr(xdr, &hdr); 6424 if (!status) 6425 status = decode_sequence(xdr, &res->seq_res, req); 6426 if (!status) 6427 status = decode_putfh(xdr); 6428 if (!status) 6429 status = decode_pathconf(xdr, res->pathconf); 6430 return status; 6431 } 6432 6433 /* 6434 * Decode STATFS response 6435 */ 6436 static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, struct xdr_stream *xdr, 6437 struct nfs4_statfs_res *res) 6438 { 6439 struct compound_hdr hdr; 6440 int status; 6441 6442 status = decode_compound_hdr(xdr, &hdr); 6443 if (!status) 6444 status = decode_sequence(xdr, &res->seq_res, req); 6445 if (!status) 6446 status = decode_putfh(xdr); 6447 if (!status) 6448 status = decode_statfs(xdr, res->fsstat); 6449 return status; 6450 } 6451 6452 /* 6453 * Decode GETATTR_BITMAP response 6454 */ 6455 static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req, 6456 struct xdr_stream *xdr, 6457 struct nfs4_server_caps_res *res) 6458 { 6459 struct compound_hdr hdr; 6460 int status; 6461 6462 status = decode_compound_hdr(xdr, &hdr); 6463 if (status) 6464 goto out; 6465 status = decode_sequence(xdr, &res->seq_res, req); 6466 if (status) 6467 goto out; 6468 status = decode_putfh(xdr); 6469 if (status) 6470 goto out; 6471 status = decode_server_caps(xdr, res); 6472 out: 6473 return status; 6474 } 6475 6476 /* 6477 * Decode RENEW response 6478 */ 6479 static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6480 void *__unused) 6481 { 6482 struct compound_hdr hdr; 6483 int status; 6484 6485 status = decode_compound_hdr(xdr, &hdr); 6486 if (!status) 6487 status = decode_renew(xdr); 6488 return status; 6489 } 6490 6491 /* 6492 * Decode SETCLIENTID response 6493 */ 6494 static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req, 6495 struct xdr_stream *xdr, 6496 struct nfs4_setclientid_res *res) 6497 { 6498 struct compound_hdr hdr; 6499 int status; 6500 6501 status = decode_compound_hdr(xdr, &hdr); 6502 if (!status) 6503 status = decode_setclientid(xdr, res); 6504 return status; 6505 } 6506 6507 /* 6508 * Decode SETCLIENTID_CONFIRM response 6509 */ 6510 static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req, 6511 struct xdr_stream *xdr, 6512 struct nfs_fsinfo *fsinfo) 6513 { 6514 struct compound_hdr hdr; 6515 int status; 6516 6517 status = decode_compound_hdr(xdr, &hdr); 6518 if (!status) 6519 status = decode_setclientid_confirm(xdr); 6520 if (!status) 6521 status = decode_putrootfh(xdr); 6522 if (!status) 6523 status = decode_fsinfo(xdr, fsinfo); 6524 return status; 6525 } 6526 6527 /* 6528 * Decode DELEGRETURN response 6529 */ 6530 static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp, 6531 struct xdr_stream *xdr, 6532 struct nfs4_delegreturnres *res) 6533 { 6534 struct compound_hdr hdr; 6535 int status; 6536 6537 status = decode_compound_hdr(xdr, &hdr); 6538 if (status) 6539 goto out; 6540 status = decode_sequence(xdr, &res->seq_res, rqstp); 6541 if (status) 6542 goto out; 6543 status = decode_putfh(xdr); 6544 if (status != 0) 6545 goto out; 6546 status = decode_delegreturn(xdr); 6547 if (status != 0) 6548 goto out; 6549 decode_getfattr(xdr, res->fattr, res->server, 6550 !RPC_IS_ASYNC(rqstp->rq_task)); 6551 out: 6552 return status; 6553 } 6554 6555 /* 6556 * Decode FS_LOCATIONS response 6557 */ 6558 static int nfs4_xdr_dec_fs_locations(struct rpc_rqst *req, 6559 struct xdr_stream *xdr, 6560 struct nfs4_fs_locations_res *res) 6561 { 6562 struct compound_hdr hdr; 6563 int status; 6564 6565 status = decode_compound_hdr(xdr, &hdr); 6566 if (status) 6567 goto out; 6568 status = decode_sequence(xdr, &res->seq_res, req); 6569 if (status) 6570 goto out; 6571 status = decode_putfh(xdr); 6572 if (status) 6573 goto out; 6574 status = decode_lookup(xdr); 6575 if (status) 6576 goto out; 6577 xdr_enter_page(xdr, PAGE_SIZE); 6578 status = decode_getfattr(xdr, &res->fs_locations->fattr, 6579 res->fs_locations->server, 6580 !RPC_IS_ASYNC(req->rq_task)); 6581 out: 6582 return status; 6583 } 6584 6585 /* 6586 * Decode SECINFO response 6587 */ 6588 static int nfs4_xdr_dec_secinfo(struct rpc_rqst *rqstp, 6589 struct xdr_stream *xdr, 6590 struct nfs4_secinfo_res *res) 6591 { 6592 struct compound_hdr hdr; 6593 int status; 6594 6595 status = decode_compound_hdr(xdr, &hdr); 6596 if (status) 6597 goto out; 6598 status = decode_sequence(xdr, &res->seq_res, rqstp); 6599 if (status) 6600 goto out; 6601 status = decode_putfh(xdr); 6602 if (status) 6603 goto out; 6604 status = decode_secinfo(xdr, res); 6605 if (status) 6606 goto out; 6607 out: 6608 return status; 6609 } 6610 6611 #if defined(CONFIG_NFS_V4_1) 6612 /* 6613 * Decode EXCHANGE_ID response 6614 */ 6615 static int nfs4_xdr_dec_exchange_id(struct rpc_rqst *rqstp, 6616 struct xdr_stream *xdr, 6617 void *res) 6618 { 6619 struct compound_hdr hdr; 6620 int status; 6621 6622 status = decode_compound_hdr(xdr, &hdr); 6623 if (!status) 6624 status = decode_exchange_id(xdr, res); 6625 return status; 6626 } 6627 6628 /* 6629 * Decode CREATE_SESSION response 6630 */ 6631 static int nfs4_xdr_dec_create_session(struct rpc_rqst *rqstp, 6632 struct xdr_stream *xdr, 6633 struct nfs41_create_session_res *res) 6634 { 6635 struct compound_hdr hdr; 6636 int status; 6637 6638 status = decode_compound_hdr(xdr, &hdr); 6639 if (!status) 6640 status = decode_create_session(xdr, res); 6641 return status; 6642 } 6643 6644 /* 6645 * Decode DESTROY_SESSION response 6646 */ 6647 static int nfs4_xdr_dec_destroy_session(struct rpc_rqst *rqstp, 6648 struct xdr_stream *xdr, 6649 void *res) 6650 { 6651 struct compound_hdr hdr; 6652 int status; 6653 6654 status = decode_compound_hdr(xdr, &hdr); 6655 if (!status) 6656 status = decode_destroy_session(xdr, res); 6657 return status; 6658 } 6659 6660 /* 6661 * Decode SEQUENCE response 6662 */ 6663 static int nfs4_xdr_dec_sequence(struct rpc_rqst *rqstp, 6664 struct xdr_stream *xdr, 6665 struct nfs4_sequence_res *res) 6666 { 6667 struct compound_hdr hdr; 6668 int status; 6669 6670 status = decode_compound_hdr(xdr, &hdr); 6671 if (!status) 6672 status = decode_sequence(xdr, res, rqstp); 6673 return status; 6674 } 6675 6676 /* 6677 * Decode GET_LEASE_TIME response 6678 */ 6679 static int nfs4_xdr_dec_get_lease_time(struct rpc_rqst *rqstp, 6680 struct xdr_stream *xdr, 6681 struct nfs4_get_lease_time_res *res) 6682 { 6683 struct compound_hdr hdr; 6684 int status; 6685 6686 status = decode_compound_hdr(xdr, &hdr); 6687 if (!status) 6688 status = decode_sequence(xdr, &res->lr_seq_res, rqstp); 6689 if (!status) 6690 status = decode_putrootfh(xdr); 6691 if (!status) 6692 status = decode_fsinfo(xdr, res->lr_fsinfo); 6693 return status; 6694 } 6695 6696 /* 6697 * Decode RECLAIM_COMPLETE response 6698 */ 6699 static int nfs4_xdr_dec_reclaim_complete(struct rpc_rqst *rqstp, 6700 struct xdr_stream *xdr, 6701 struct nfs41_reclaim_complete_res *res) 6702 { 6703 struct compound_hdr hdr; 6704 int status; 6705 6706 status = decode_compound_hdr(xdr, &hdr); 6707 if (!status) 6708 status = decode_sequence(xdr, &res->seq_res, rqstp); 6709 if (!status) 6710 status = decode_reclaim_complete(xdr, (void *)NULL); 6711 return status; 6712 } 6713 6714 /* 6715 * Decode GETDEVICELIST response 6716 */ 6717 static int nfs4_xdr_dec_getdevicelist(struct rpc_rqst *rqstp, 6718 struct xdr_stream *xdr, 6719 struct nfs4_getdevicelist_res *res) 6720 { 6721 struct compound_hdr hdr; 6722 int status; 6723 6724 dprintk("encoding getdevicelist!\n"); 6725 6726 status = decode_compound_hdr(xdr, &hdr); 6727 if (status != 0) 6728 goto out; 6729 status = decode_sequence(xdr, &res->seq_res, rqstp); 6730 if (status != 0) 6731 goto out; 6732 status = decode_putfh(xdr); 6733 if (status != 0) 6734 goto out; 6735 status = decode_getdevicelist(xdr, res->devlist); 6736 out: 6737 return status; 6738 } 6739 6740 /* 6741 * Decode GETDEVINFO response 6742 */ 6743 static int nfs4_xdr_dec_getdeviceinfo(struct rpc_rqst *rqstp, 6744 struct xdr_stream *xdr, 6745 struct nfs4_getdeviceinfo_res *res) 6746 { 6747 struct compound_hdr hdr; 6748 int status; 6749 6750 status = decode_compound_hdr(xdr, &hdr); 6751 if (status != 0) 6752 goto out; 6753 status = decode_sequence(xdr, &res->seq_res, rqstp); 6754 if (status != 0) 6755 goto out; 6756 status = decode_getdeviceinfo(xdr, res->pdev); 6757 out: 6758 return status; 6759 } 6760 6761 /* 6762 * Decode LAYOUTGET response 6763 */ 6764 static int nfs4_xdr_dec_layoutget(struct rpc_rqst *rqstp, 6765 struct xdr_stream *xdr, 6766 struct nfs4_layoutget_res *res) 6767 { 6768 struct compound_hdr hdr; 6769 int status; 6770 6771 status = decode_compound_hdr(xdr, &hdr); 6772 if (status) 6773 goto out; 6774 status = decode_sequence(xdr, &res->seq_res, rqstp); 6775 if (status) 6776 goto out; 6777 status = decode_putfh(xdr); 6778 if (status) 6779 goto out; 6780 status = decode_layoutget(xdr, rqstp, res); 6781 out: 6782 return status; 6783 } 6784 6785 /* 6786 * Decode LAYOUTRETURN response 6787 */ 6788 static int nfs4_xdr_dec_layoutreturn(struct rpc_rqst *rqstp, 6789 struct xdr_stream *xdr, 6790 struct nfs4_layoutreturn_res *res) 6791 { 6792 struct compound_hdr hdr; 6793 int status; 6794 6795 status = decode_compound_hdr(xdr, &hdr); 6796 if (status) 6797 goto out; 6798 status = decode_sequence(xdr, &res->seq_res, rqstp); 6799 if (status) 6800 goto out; 6801 status = decode_putfh(xdr); 6802 if (status) 6803 goto out; 6804 status = decode_layoutreturn(xdr, res); 6805 out: 6806 return status; 6807 } 6808 6809 /* 6810 * Decode LAYOUTCOMMIT response 6811 */ 6812 static int nfs4_xdr_dec_layoutcommit(struct rpc_rqst *rqstp, 6813 struct xdr_stream *xdr, 6814 struct nfs4_layoutcommit_res *res) 6815 { 6816 struct compound_hdr hdr; 6817 int status; 6818 6819 status = decode_compound_hdr(xdr, &hdr); 6820 if (status) 6821 goto out; 6822 status = decode_sequence(xdr, &res->seq_res, rqstp); 6823 if (status) 6824 goto out; 6825 status = decode_putfh(xdr); 6826 if (status) 6827 goto out; 6828 status = decode_layoutcommit(xdr, rqstp, res); 6829 if (status) 6830 goto out; 6831 decode_getfattr(xdr, res->fattr, res->server, 6832 !RPC_IS_ASYNC(rqstp->rq_task)); 6833 out: 6834 return status; 6835 } 6836 6837 /* 6838 * Decode SECINFO_NO_NAME response 6839 */ 6840 static int nfs4_xdr_dec_secinfo_no_name(struct rpc_rqst *rqstp, 6841 struct xdr_stream *xdr, 6842 struct nfs4_secinfo_res *res) 6843 { 6844 struct compound_hdr hdr; 6845 int status; 6846 6847 status = decode_compound_hdr(xdr, &hdr); 6848 if (status) 6849 goto out; 6850 status = decode_sequence(xdr, &res->seq_res, rqstp); 6851 if (status) 6852 goto out; 6853 status = decode_putrootfh(xdr); 6854 if (status) 6855 goto out; 6856 status = decode_secinfo(xdr, res); 6857 out: 6858 return status; 6859 } 6860 6861 /* 6862 * Decode TEST_STATEID response 6863 */ 6864 static int nfs4_xdr_dec_test_stateid(struct rpc_rqst *rqstp, 6865 struct xdr_stream *xdr, 6866 struct nfs41_test_stateid_res *res) 6867 { 6868 struct compound_hdr hdr; 6869 int status; 6870 6871 status = decode_compound_hdr(xdr, &hdr); 6872 if (status) 6873 goto out; 6874 status = decode_sequence(xdr, &res->seq_res, rqstp); 6875 if (status) 6876 goto out; 6877 status = decode_test_stateid(xdr, res); 6878 out: 6879 return status; 6880 } 6881 6882 /* 6883 * Decode FREE_STATEID response 6884 */ 6885 static int nfs4_xdr_dec_free_stateid(struct rpc_rqst *rqstp, 6886 struct xdr_stream *xdr, 6887 struct nfs41_free_stateid_res *res) 6888 { 6889 struct compound_hdr hdr; 6890 int status; 6891 6892 status = decode_compound_hdr(xdr, &hdr); 6893 if (status) 6894 goto out; 6895 status = decode_sequence(xdr, &res->seq_res, rqstp); 6896 if (status) 6897 goto out; 6898 status = decode_free_stateid(xdr, res); 6899 out: 6900 return status; 6901 } 6902 #endif /* CONFIG_NFS_V4_1 */ 6903 6904 /** 6905 * nfs4_decode_dirent - Decode a single NFSv4 directory entry stored in 6906 * the local page cache. 6907 * @xdr: XDR stream where entry resides 6908 * @entry: buffer to fill in with entry data 6909 * @plus: boolean indicating whether this should be a readdirplus entry 6910 * 6911 * Returns zero if successful, otherwise a negative errno value is 6912 * returned. 6913 * 6914 * This function is not invoked during READDIR reply decoding, but 6915 * rather whenever an application invokes the getdents(2) system call 6916 * on a directory already in our cache. 6917 */ 6918 int nfs4_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry, 6919 int plus) 6920 { 6921 uint32_t bitmap[3] = {0}; 6922 uint32_t len; 6923 __be32 *p = xdr_inline_decode(xdr, 4); 6924 if (unlikely(!p)) 6925 goto out_overflow; 6926 if (*p == xdr_zero) { 6927 p = xdr_inline_decode(xdr, 4); 6928 if (unlikely(!p)) 6929 goto out_overflow; 6930 if (*p == xdr_zero) 6931 return -EAGAIN; 6932 entry->eof = 1; 6933 return -EBADCOOKIE; 6934 } 6935 6936 p = xdr_inline_decode(xdr, 12); 6937 if (unlikely(!p)) 6938 goto out_overflow; 6939 entry->prev_cookie = entry->cookie; 6940 p = xdr_decode_hyper(p, &entry->cookie); 6941 entry->len = be32_to_cpup(p); 6942 6943 p = xdr_inline_decode(xdr, entry->len); 6944 if (unlikely(!p)) 6945 goto out_overflow; 6946 entry->name = (const char *) p; 6947 6948 /* 6949 * In case the server doesn't return an inode number, 6950 * we fake one here. (We don't use inode number 0, 6951 * since glibc seems to choke on it...) 6952 */ 6953 entry->ino = 1; 6954 entry->fattr->valid = 0; 6955 6956 if (decode_attr_bitmap(xdr, bitmap) < 0) 6957 goto out_overflow; 6958 6959 if (decode_attr_length(xdr, &len, &p) < 0) 6960 goto out_overflow; 6961 6962 if (decode_getfattr_attrs(xdr, bitmap, entry->fattr, entry->fh, 6963 entry->server, 1) < 0) 6964 goto out_overflow; 6965 if (entry->fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID) 6966 entry->ino = entry->fattr->mounted_on_fileid; 6967 else if (entry->fattr->valid & NFS_ATTR_FATTR_FILEID) 6968 entry->ino = entry->fattr->fileid; 6969 6970 entry->d_type = DT_UNKNOWN; 6971 if (entry->fattr->valid & NFS_ATTR_FATTR_TYPE) 6972 entry->d_type = nfs_umode_to_dtype(entry->fattr->mode); 6973 6974 return 0; 6975 6976 out_overflow: 6977 print_overflow_msg(__func__, xdr); 6978 return -EAGAIN; 6979 } 6980 6981 /* 6982 * We need to translate between nfs status return values and 6983 * the local errno values which may not be the same. 6984 */ 6985 static struct { 6986 int stat; 6987 int errno; 6988 } nfs_errtbl[] = { 6989 { NFS4_OK, 0 }, 6990 { NFS4ERR_PERM, -EPERM }, 6991 { NFS4ERR_NOENT, -ENOENT }, 6992 { NFS4ERR_IO, -errno_NFSERR_IO}, 6993 { NFS4ERR_NXIO, -ENXIO }, 6994 { NFS4ERR_ACCESS, -EACCES }, 6995 { NFS4ERR_EXIST, -EEXIST }, 6996 { NFS4ERR_XDEV, -EXDEV }, 6997 { NFS4ERR_NOTDIR, -ENOTDIR }, 6998 { NFS4ERR_ISDIR, -EISDIR }, 6999 { NFS4ERR_INVAL, -EINVAL }, 7000 { NFS4ERR_FBIG, -EFBIG }, 7001 { NFS4ERR_NOSPC, -ENOSPC }, 7002 { NFS4ERR_ROFS, -EROFS }, 7003 { NFS4ERR_MLINK, -EMLINK }, 7004 { NFS4ERR_NAMETOOLONG, -ENAMETOOLONG }, 7005 { NFS4ERR_NOTEMPTY, -ENOTEMPTY }, 7006 { NFS4ERR_DQUOT, -EDQUOT }, 7007 { NFS4ERR_STALE, -ESTALE }, 7008 { NFS4ERR_BADHANDLE, -EBADHANDLE }, 7009 { NFS4ERR_BAD_COOKIE, -EBADCOOKIE }, 7010 { NFS4ERR_NOTSUPP, -ENOTSUPP }, 7011 { NFS4ERR_TOOSMALL, -ETOOSMALL }, 7012 { NFS4ERR_SERVERFAULT, -EREMOTEIO }, 7013 { NFS4ERR_BADTYPE, -EBADTYPE }, 7014 { NFS4ERR_LOCKED, -EAGAIN }, 7015 { NFS4ERR_SYMLINK, -ELOOP }, 7016 { NFS4ERR_OP_ILLEGAL, -EOPNOTSUPP }, 7017 { NFS4ERR_DEADLOCK, -EDEADLK }, 7018 { -1, -EIO } 7019 }; 7020 7021 /* 7022 * Convert an NFS error code to a local one. 7023 * This one is used jointly by NFSv2 and NFSv3. 7024 */ 7025 static int 7026 nfs4_stat_to_errno(int stat) 7027 { 7028 int i; 7029 for (i = 0; nfs_errtbl[i].stat != -1; i++) { 7030 if (nfs_errtbl[i].stat == stat) 7031 return nfs_errtbl[i].errno; 7032 } 7033 if (stat <= 10000 || stat > 10100) { 7034 /* The server is looney tunes. */ 7035 return -EREMOTEIO; 7036 } 7037 /* If we cannot translate the error, the recovery routines should 7038 * handle it. 7039 * Note: remaining NFSv4 error codes have values > 10000, so should 7040 * not conflict with native Linux error codes. 7041 */ 7042 return -stat; 7043 } 7044 7045 #define PROC(proc, argtype, restype) \ 7046 [NFSPROC4_CLNT_##proc] = { \ 7047 .p_proc = NFSPROC4_COMPOUND, \ 7048 .p_encode = (kxdreproc_t)nfs4_xdr_##argtype, \ 7049 .p_decode = (kxdrdproc_t)nfs4_xdr_##restype, \ 7050 .p_arglen = NFS4_##argtype##_sz, \ 7051 .p_replen = NFS4_##restype##_sz, \ 7052 .p_statidx = NFSPROC4_CLNT_##proc, \ 7053 .p_name = #proc, \ 7054 } 7055 7056 struct rpc_procinfo nfs4_procedures[] = { 7057 PROC(READ, enc_read, dec_read), 7058 PROC(WRITE, enc_write, dec_write), 7059 PROC(COMMIT, enc_commit, dec_commit), 7060 PROC(OPEN, enc_open, dec_open), 7061 PROC(OPEN_CONFIRM, enc_open_confirm, dec_open_confirm), 7062 PROC(OPEN_NOATTR, enc_open_noattr, dec_open_noattr), 7063 PROC(OPEN_DOWNGRADE, enc_open_downgrade, dec_open_downgrade), 7064 PROC(CLOSE, enc_close, dec_close), 7065 PROC(SETATTR, enc_setattr, dec_setattr), 7066 PROC(FSINFO, enc_fsinfo, dec_fsinfo), 7067 PROC(RENEW, enc_renew, dec_renew), 7068 PROC(SETCLIENTID, enc_setclientid, dec_setclientid), 7069 PROC(SETCLIENTID_CONFIRM, enc_setclientid_confirm, dec_setclientid_confirm), 7070 PROC(LOCK, enc_lock, dec_lock), 7071 PROC(LOCKT, enc_lockt, dec_lockt), 7072 PROC(LOCKU, enc_locku, dec_locku), 7073 PROC(ACCESS, enc_access, dec_access), 7074 PROC(GETATTR, enc_getattr, dec_getattr), 7075 PROC(LOOKUP, enc_lookup, dec_lookup), 7076 PROC(LOOKUP_ROOT, enc_lookup_root, dec_lookup_root), 7077 PROC(REMOVE, enc_remove, dec_remove), 7078 PROC(RENAME, enc_rename, dec_rename), 7079 PROC(LINK, enc_link, dec_link), 7080 PROC(SYMLINK, enc_symlink, dec_symlink), 7081 PROC(CREATE, enc_create, dec_create), 7082 PROC(PATHCONF, enc_pathconf, dec_pathconf), 7083 PROC(STATFS, enc_statfs, dec_statfs), 7084 PROC(READLINK, enc_readlink, dec_readlink), 7085 PROC(READDIR, enc_readdir, dec_readdir), 7086 PROC(SERVER_CAPS, enc_server_caps, dec_server_caps), 7087 PROC(DELEGRETURN, enc_delegreturn, dec_delegreturn), 7088 PROC(GETACL, enc_getacl, dec_getacl), 7089 PROC(SETACL, enc_setacl, dec_setacl), 7090 PROC(FS_LOCATIONS, enc_fs_locations, dec_fs_locations), 7091 PROC(RELEASE_LOCKOWNER, enc_release_lockowner, dec_release_lockowner), 7092 PROC(SECINFO, enc_secinfo, dec_secinfo), 7093 #if defined(CONFIG_NFS_V4_1) 7094 PROC(EXCHANGE_ID, enc_exchange_id, dec_exchange_id), 7095 PROC(CREATE_SESSION, enc_create_session, dec_create_session), 7096 PROC(DESTROY_SESSION, enc_destroy_session, dec_destroy_session), 7097 PROC(SEQUENCE, enc_sequence, dec_sequence), 7098 PROC(GET_LEASE_TIME, enc_get_lease_time, dec_get_lease_time), 7099 PROC(RECLAIM_COMPLETE, enc_reclaim_complete, dec_reclaim_complete), 7100 PROC(GETDEVICEINFO, enc_getdeviceinfo, dec_getdeviceinfo), 7101 PROC(LAYOUTGET, enc_layoutget, dec_layoutget), 7102 PROC(LAYOUTCOMMIT, enc_layoutcommit, dec_layoutcommit), 7103 PROC(LAYOUTRETURN, enc_layoutreturn, dec_layoutreturn), 7104 PROC(SECINFO_NO_NAME, enc_secinfo_no_name, dec_secinfo_no_name), 7105 PROC(TEST_STATEID, enc_test_stateid, dec_test_stateid), 7106 PROC(FREE_STATEID, enc_free_stateid, dec_free_stateid), 7107 PROC(GETDEVICELIST, enc_getdevicelist, dec_getdevicelist), 7108 #endif /* CONFIG_NFS_V4_1 */ 7109 }; 7110 7111 struct rpc_version nfs_version4 = { 7112 .number = 4, 7113 .nrprocs = ARRAY_SIZE(nfs4_procedures), 7114 .procs = nfs4_procedures 7115 }; 7116 7117 /* 7118 * Local variables: 7119 * c-basic-offset: 8 7120 * End: 7121 */ 7122