1 /* 2 * fs/nfs/nfs4xdr.c 3 * 4 * Client-side XDR for NFSv4. 5 * 6 * Copyright (c) 2002 The Regents of the University of Michigan. 7 * All rights reserved. 8 * 9 * Kendrick Smith <kmsmith@umich.edu> 10 * Andy Adamson <andros@umich.edu> 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 16 * 1. Redistributions of source code must retain the above copyright 17 * notice, this list of conditions and the following disclaimer. 18 * 2. Redistributions in binary form must reproduce the above copyright 19 * notice, this list of conditions and the following disclaimer in the 20 * documentation and/or other materials provided with the distribution. 21 * 3. Neither the name of the University nor the names of its 22 * contributors may be used to endorse or promote products derived 23 * from this software without specific prior written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED 26 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 27 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 28 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR 32 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 33 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 34 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 35 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 36 */ 37 38 #include <linux/param.h> 39 #include <linux/time.h> 40 #include <linux/mm.h> 41 #include <linux/errno.h> 42 #include <linux/string.h> 43 #include <linux/in.h> 44 #include <linux/pagemap.h> 45 #include <linux/proc_fs.h> 46 #include <linux/kdev_t.h> 47 #include <linux/module.h> 48 #include <linux/utsname.h> 49 #include <linux/sunrpc/clnt.h> 50 #include <linux/sunrpc/msg_prot.h> 51 #include <linux/sunrpc/gss_api.h> 52 #include <linux/nfs.h> 53 #include <linux/nfs4.h> 54 #include <linux/nfs_fs.h> 55 #include <linux/nfs_idmap.h> 56 #include "nfs4_fs.h" 57 #include "internal.h" 58 #include "pnfs.h" 59 60 #define NFSDBG_FACILITY NFSDBG_XDR 61 62 /* Mapping from NFS error code to "errno" error code. */ 63 #define errno_NFSERR_IO EIO 64 65 static int nfs4_stat_to_errno(int); 66 67 /* NFSv4 COMPOUND tags are only wanted for debugging purposes */ 68 #ifdef DEBUG 69 #define NFS4_MAXTAGLEN 20 70 #else 71 #define NFS4_MAXTAGLEN 0 72 #endif 73 74 /* lock,open owner id: 75 * we currently use size 2 (u64) out of (NFS4_OPAQUE_LIMIT >> 2) 76 */ 77 #define open_owner_id_maxsz (1 + 1 + 4) 78 #define lock_owner_id_maxsz (1 + 1 + 4) 79 #define decode_lockowner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ)) 80 #define compound_encode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2)) 81 #define compound_decode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2)) 82 #define op_encode_hdr_maxsz (1) 83 #define op_decode_hdr_maxsz (2) 84 #define encode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE)) 85 #define decode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE)) 86 #define encode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE)) 87 #define decode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE)) 88 #define encode_putfh_maxsz (op_encode_hdr_maxsz + 1 + \ 89 (NFS4_FHSIZE >> 2)) 90 #define decode_putfh_maxsz (op_decode_hdr_maxsz) 91 #define encode_putrootfh_maxsz (op_encode_hdr_maxsz) 92 #define decode_putrootfh_maxsz (op_decode_hdr_maxsz) 93 #define encode_getfh_maxsz (op_encode_hdr_maxsz) 94 #define decode_getfh_maxsz (op_decode_hdr_maxsz + 1 + \ 95 ((3+NFS4_FHSIZE) >> 2)) 96 #define nfs4_fattr_bitmap_maxsz 4 97 #define encode_getattr_maxsz (op_encode_hdr_maxsz + nfs4_fattr_bitmap_maxsz) 98 #define nfs4_name_maxsz (1 + ((3 + NFS4_MAXNAMLEN) >> 2)) 99 #define nfs4_path_maxsz (1 + ((3 + NFS4_MAXPATHLEN) >> 2)) 100 #define nfs4_owner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ)) 101 #define nfs4_group_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ)) 102 /* This is based on getfattr, which uses the most attributes: */ 103 #define nfs4_fattr_value_maxsz (1 + (1 + 2 + 2 + 4 + 2 + 1 + 1 + 2 + 2 + \ 104 3 + 3 + 3 + nfs4_owner_maxsz + nfs4_group_maxsz)) 105 #define nfs4_fattr_maxsz (nfs4_fattr_bitmap_maxsz + \ 106 nfs4_fattr_value_maxsz) 107 #define decode_getattr_maxsz (op_decode_hdr_maxsz + nfs4_fattr_maxsz) 108 #define encode_attrs_maxsz (nfs4_fattr_bitmap_maxsz + \ 109 1 + 2 + 1 + \ 110 nfs4_owner_maxsz + \ 111 nfs4_group_maxsz + \ 112 4 + 4) 113 #define encode_savefh_maxsz (op_encode_hdr_maxsz) 114 #define decode_savefh_maxsz (op_decode_hdr_maxsz) 115 #define encode_restorefh_maxsz (op_encode_hdr_maxsz) 116 #define decode_restorefh_maxsz (op_decode_hdr_maxsz) 117 #define encode_fsinfo_maxsz (encode_getattr_maxsz) 118 /* The 5 accounts for the PNFS attributes, and assumes that at most three 119 * layout types will be returned. 120 */ 121 #define decode_fsinfo_maxsz (op_decode_hdr_maxsz + \ 122 nfs4_fattr_bitmap_maxsz + 4 + 8 + 5) 123 #define encode_renew_maxsz (op_encode_hdr_maxsz + 3) 124 #define decode_renew_maxsz (op_decode_hdr_maxsz) 125 #define encode_setclientid_maxsz \ 126 (op_encode_hdr_maxsz + \ 127 XDR_QUADLEN(NFS4_VERIFIER_SIZE) + \ 128 XDR_QUADLEN(NFS4_SETCLIENTID_NAMELEN) + \ 129 1 /* sc_prog */ + \ 130 XDR_QUADLEN(RPCBIND_MAXNETIDLEN) + \ 131 XDR_QUADLEN(RPCBIND_MAXUADDRLEN) + \ 132 1) /* sc_cb_ident */ 133 #define decode_setclientid_maxsz \ 134 (op_decode_hdr_maxsz + \ 135 2 + \ 136 1024) /* large value for CLID_INUSE */ 137 #define encode_setclientid_confirm_maxsz \ 138 (op_encode_hdr_maxsz + \ 139 3 + (NFS4_VERIFIER_SIZE >> 2)) 140 #define decode_setclientid_confirm_maxsz \ 141 (op_decode_hdr_maxsz) 142 #define encode_lookup_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz) 143 #define decode_lookup_maxsz (op_decode_hdr_maxsz) 144 #define encode_share_access_maxsz \ 145 (2) 146 #define encode_createmode_maxsz (1 + encode_attrs_maxsz + encode_verifier_maxsz) 147 #define encode_opentype_maxsz (1 + encode_createmode_maxsz) 148 #define encode_claim_null_maxsz (1 + nfs4_name_maxsz) 149 #define encode_open_maxsz (op_encode_hdr_maxsz + \ 150 2 + encode_share_access_maxsz + 2 + \ 151 open_owner_id_maxsz + \ 152 encode_opentype_maxsz + \ 153 encode_claim_null_maxsz) 154 #define decode_ace_maxsz (3 + nfs4_owner_maxsz) 155 #define decode_delegation_maxsz (1 + decode_stateid_maxsz + 1 + \ 156 decode_ace_maxsz) 157 #define decode_change_info_maxsz (5) 158 #define decode_open_maxsz (op_decode_hdr_maxsz + \ 159 decode_stateid_maxsz + \ 160 decode_change_info_maxsz + 1 + \ 161 nfs4_fattr_bitmap_maxsz + \ 162 decode_delegation_maxsz) 163 #define encode_open_confirm_maxsz \ 164 (op_encode_hdr_maxsz + \ 165 encode_stateid_maxsz + 1) 166 #define decode_open_confirm_maxsz \ 167 (op_decode_hdr_maxsz + \ 168 decode_stateid_maxsz) 169 #define encode_open_downgrade_maxsz \ 170 (op_encode_hdr_maxsz + \ 171 encode_stateid_maxsz + 1 + \ 172 encode_share_access_maxsz) 173 #define decode_open_downgrade_maxsz \ 174 (op_decode_hdr_maxsz + \ 175 decode_stateid_maxsz) 176 #define encode_close_maxsz (op_encode_hdr_maxsz + \ 177 1 + encode_stateid_maxsz) 178 #define decode_close_maxsz (op_decode_hdr_maxsz + \ 179 decode_stateid_maxsz) 180 #define encode_setattr_maxsz (op_encode_hdr_maxsz + \ 181 encode_stateid_maxsz + \ 182 encode_attrs_maxsz) 183 #define decode_setattr_maxsz (op_decode_hdr_maxsz + \ 184 nfs4_fattr_bitmap_maxsz) 185 #define encode_read_maxsz (op_encode_hdr_maxsz + \ 186 encode_stateid_maxsz + 3) 187 #define decode_read_maxsz (op_decode_hdr_maxsz + 2) 188 #define encode_readdir_maxsz (op_encode_hdr_maxsz + \ 189 2 + encode_verifier_maxsz + 5) 190 #define decode_readdir_maxsz (op_decode_hdr_maxsz + \ 191 decode_verifier_maxsz) 192 #define encode_readlink_maxsz (op_encode_hdr_maxsz) 193 #define decode_readlink_maxsz (op_decode_hdr_maxsz + 1) 194 #define encode_write_maxsz (op_encode_hdr_maxsz + \ 195 encode_stateid_maxsz + 4) 196 #define decode_write_maxsz (op_decode_hdr_maxsz + \ 197 2 + decode_verifier_maxsz) 198 #define encode_commit_maxsz (op_encode_hdr_maxsz + 3) 199 #define decode_commit_maxsz (op_decode_hdr_maxsz + \ 200 decode_verifier_maxsz) 201 #define encode_remove_maxsz (op_encode_hdr_maxsz + \ 202 nfs4_name_maxsz) 203 #define decode_remove_maxsz (op_decode_hdr_maxsz + \ 204 decode_change_info_maxsz) 205 #define encode_rename_maxsz (op_encode_hdr_maxsz + \ 206 2 * nfs4_name_maxsz) 207 #define decode_rename_maxsz (op_decode_hdr_maxsz + \ 208 decode_change_info_maxsz + \ 209 decode_change_info_maxsz) 210 #define encode_link_maxsz (op_encode_hdr_maxsz + \ 211 nfs4_name_maxsz) 212 #define decode_link_maxsz (op_decode_hdr_maxsz + decode_change_info_maxsz) 213 #define encode_lockowner_maxsz (7) 214 #define encode_lock_maxsz (op_encode_hdr_maxsz + \ 215 7 + \ 216 1 + encode_stateid_maxsz + 1 + \ 217 encode_lockowner_maxsz) 218 #define decode_lock_denied_maxsz \ 219 (8 + decode_lockowner_maxsz) 220 #define decode_lock_maxsz (op_decode_hdr_maxsz + \ 221 decode_lock_denied_maxsz) 222 #define encode_lockt_maxsz (op_encode_hdr_maxsz + 5 + \ 223 encode_lockowner_maxsz) 224 #define decode_lockt_maxsz (op_decode_hdr_maxsz + \ 225 decode_lock_denied_maxsz) 226 #define encode_locku_maxsz (op_encode_hdr_maxsz + 3 + \ 227 encode_stateid_maxsz + \ 228 4) 229 #define decode_locku_maxsz (op_decode_hdr_maxsz + \ 230 decode_stateid_maxsz) 231 #define encode_release_lockowner_maxsz \ 232 (op_encode_hdr_maxsz + \ 233 encode_lockowner_maxsz) 234 #define decode_release_lockowner_maxsz \ 235 (op_decode_hdr_maxsz) 236 #define encode_access_maxsz (op_encode_hdr_maxsz + 1) 237 #define decode_access_maxsz (op_decode_hdr_maxsz + 2) 238 #define encode_symlink_maxsz (op_encode_hdr_maxsz + \ 239 1 + nfs4_name_maxsz + \ 240 1 + \ 241 nfs4_fattr_maxsz) 242 #define decode_symlink_maxsz (op_decode_hdr_maxsz + 8) 243 #define encode_create_maxsz (op_encode_hdr_maxsz + \ 244 1 + 2 + nfs4_name_maxsz + \ 245 encode_attrs_maxsz) 246 #define decode_create_maxsz (op_decode_hdr_maxsz + \ 247 decode_change_info_maxsz + \ 248 nfs4_fattr_bitmap_maxsz) 249 #define encode_statfs_maxsz (encode_getattr_maxsz) 250 #define decode_statfs_maxsz (decode_getattr_maxsz) 251 #define encode_delegreturn_maxsz (op_encode_hdr_maxsz + 4) 252 #define decode_delegreturn_maxsz (op_decode_hdr_maxsz) 253 #define encode_getacl_maxsz (encode_getattr_maxsz) 254 #define decode_getacl_maxsz (op_decode_hdr_maxsz + \ 255 nfs4_fattr_bitmap_maxsz + 1) 256 #define encode_setacl_maxsz (op_encode_hdr_maxsz + \ 257 encode_stateid_maxsz + 3) 258 #define decode_setacl_maxsz (decode_setattr_maxsz) 259 #define encode_fs_locations_maxsz \ 260 (encode_getattr_maxsz) 261 #define decode_fs_locations_maxsz \ 262 (0) 263 #define encode_secinfo_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz) 264 #define decode_secinfo_maxsz (op_decode_hdr_maxsz + 1 + ((NFS_MAX_SECFLAVORS * (16 + GSS_OID_MAX_LEN)) / 4)) 265 266 #if defined(CONFIG_NFS_V4_1) 267 #define NFS4_MAX_MACHINE_NAME_LEN (64) 268 269 #define encode_exchange_id_maxsz (op_encode_hdr_maxsz + \ 270 encode_verifier_maxsz + \ 271 1 /* co_ownerid.len */ + \ 272 XDR_QUADLEN(NFS4_EXCHANGE_ID_LEN) + \ 273 1 /* flags */ + \ 274 1 /* spa_how */ + \ 275 0 /* SP4_NONE (for now) */ + \ 276 1 /* implementation id array of size 1 */ + \ 277 1 /* nii_domain */ + \ 278 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \ 279 1 /* nii_name */ + \ 280 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \ 281 3 /* nii_date */) 282 #define decode_exchange_id_maxsz (op_decode_hdr_maxsz + \ 283 2 /* eir_clientid */ + \ 284 1 /* eir_sequenceid */ + \ 285 1 /* eir_flags */ + \ 286 1 /* spr_how */ + \ 287 0 /* SP4_NONE (for now) */ + \ 288 2 /* eir_server_owner.so_minor_id */ + \ 289 /* eir_server_owner.so_major_id<> */ \ 290 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \ 291 /* eir_server_scope<> */ \ 292 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \ 293 1 /* eir_server_impl_id array length */ + \ 294 1 /* nii_domain */ + \ 295 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \ 296 1 /* nii_name */ + \ 297 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \ 298 3 /* nii_date */) 299 #define encode_channel_attrs_maxsz (6 + 1 /* ca_rdma_ird.len (0) */) 300 #define decode_channel_attrs_maxsz (6 + \ 301 1 /* ca_rdma_ird.len */ + \ 302 1 /* ca_rdma_ird */) 303 #define encode_create_session_maxsz (op_encode_hdr_maxsz + \ 304 2 /* csa_clientid */ + \ 305 1 /* csa_sequence */ + \ 306 1 /* csa_flags */ + \ 307 encode_channel_attrs_maxsz + \ 308 encode_channel_attrs_maxsz + \ 309 1 /* csa_cb_program */ + \ 310 1 /* csa_sec_parms.len (1) */ + \ 311 1 /* cb_secflavor (AUTH_SYS) */ + \ 312 1 /* stamp */ + \ 313 1 /* machinename.len */ + \ 314 XDR_QUADLEN(NFS4_MAX_MACHINE_NAME_LEN) + \ 315 1 /* uid */ + \ 316 1 /* gid */ + \ 317 1 /* gids.len (0) */) 318 #define decode_create_session_maxsz (op_decode_hdr_maxsz + \ 319 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \ 320 1 /* csr_sequence */ + \ 321 1 /* csr_flags */ + \ 322 decode_channel_attrs_maxsz + \ 323 decode_channel_attrs_maxsz) 324 #define encode_destroy_session_maxsz (op_encode_hdr_maxsz + 4) 325 #define decode_destroy_session_maxsz (op_decode_hdr_maxsz) 326 #define encode_sequence_maxsz (op_encode_hdr_maxsz + \ 327 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 4) 328 #define decode_sequence_maxsz (op_decode_hdr_maxsz + \ 329 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 5) 330 #define encode_reclaim_complete_maxsz (op_encode_hdr_maxsz + 4) 331 #define decode_reclaim_complete_maxsz (op_decode_hdr_maxsz + 4) 332 #define encode_getdevicelist_maxsz (op_encode_hdr_maxsz + 4 + \ 333 encode_verifier_maxsz) 334 #define decode_getdevicelist_maxsz (op_decode_hdr_maxsz + \ 335 2 /* nfs_cookie4 gdlr_cookie */ + \ 336 decode_verifier_maxsz \ 337 /* verifier4 gdlr_verifier */ + \ 338 1 /* gdlr_deviceid_list count */ + \ 339 XDR_QUADLEN(NFS4_PNFS_GETDEVLIST_MAXNUM * \ 340 NFS4_DEVICEID4_SIZE) \ 341 /* gdlr_deviceid_list */ + \ 342 1 /* bool gdlr_eof */) 343 #define encode_getdeviceinfo_maxsz (op_encode_hdr_maxsz + 4 + \ 344 XDR_QUADLEN(NFS4_DEVICEID4_SIZE)) 345 #define decode_getdeviceinfo_maxsz (op_decode_hdr_maxsz + \ 346 1 /* layout type */ + \ 347 1 /* opaque devaddr4 length */ + \ 348 /* devaddr4 payload is read into page */ \ 349 1 /* notification bitmap length */ + \ 350 1 /* notification bitmap */) 351 #define encode_layoutget_maxsz (op_encode_hdr_maxsz + 10 + \ 352 encode_stateid_maxsz) 353 #define decode_layoutget_maxsz (op_decode_hdr_maxsz + 8 + \ 354 decode_stateid_maxsz + \ 355 XDR_QUADLEN(PNFS_LAYOUT_MAXSIZE)) 356 #define encode_layoutcommit_maxsz (op_encode_hdr_maxsz + \ 357 2 /* offset */ + \ 358 2 /* length */ + \ 359 1 /* reclaim */ + \ 360 encode_stateid_maxsz + \ 361 1 /* new offset (true) */ + \ 362 2 /* last byte written */ + \ 363 1 /* nt_timechanged (false) */ + \ 364 1 /* layoutupdate4 layout type */ + \ 365 1 /* NULL filelayout layoutupdate4 payload */) 366 #define decode_layoutcommit_maxsz (op_decode_hdr_maxsz + 3) 367 #define encode_layoutreturn_maxsz (8 + op_encode_hdr_maxsz + \ 368 encode_stateid_maxsz + \ 369 1 /* FIXME: opaque lrf_body always empty at the moment */) 370 #define decode_layoutreturn_maxsz (op_decode_hdr_maxsz + \ 371 1 + decode_stateid_maxsz) 372 #define encode_secinfo_no_name_maxsz (op_encode_hdr_maxsz + 1) 373 #define decode_secinfo_no_name_maxsz decode_secinfo_maxsz 374 #define encode_test_stateid_maxsz (op_encode_hdr_maxsz + 2 + \ 375 XDR_QUADLEN(NFS4_STATEID_SIZE)) 376 #define decode_test_stateid_maxsz (op_decode_hdr_maxsz + 2 + 1) 377 #define encode_free_stateid_maxsz (op_encode_hdr_maxsz + 1 + \ 378 XDR_QUADLEN(NFS4_STATEID_SIZE)) 379 #define decode_free_stateid_maxsz (op_decode_hdr_maxsz + 1) 380 #else /* CONFIG_NFS_V4_1 */ 381 #define encode_sequence_maxsz 0 382 #define decode_sequence_maxsz 0 383 #endif /* CONFIG_NFS_V4_1 */ 384 385 #define NFS4_enc_compound_sz (1024) /* XXX: large enough? */ 386 #define NFS4_dec_compound_sz (1024) /* XXX: large enough? */ 387 #define NFS4_enc_read_sz (compound_encode_hdr_maxsz + \ 388 encode_sequence_maxsz + \ 389 encode_putfh_maxsz + \ 390 encode_read_maxsz) 391 #define NFS4_dec_read_sz (compound_decode_hdr_maxsz + \ 392 decode_sequence_maxsz + \ 393 decode_putfh_maxsz + \ 394 decode_read_maxsz) 395 #define NFS4_enc_readlink_sz (compound_encode_hdr_maxsz + \ 396 encode_sequence_maxsz + \ 397 encode_putfh_maxsz + \ 398 encode_readlink_maxsz) 399 #define NFS4_dec_readlink_sz (compound_decode_hdr_maxsz + \ 400 decode_sequence_maxsz + \ 401 decode_putfh_maxsz + \ 402 decode_readlink_maxsz) 403 #define NFS4_enc_readdir_sz (compound_encode_hdr_maxsz + \ 404 encode_sequence_maxsz + \ 405 encode_putfh_maxsz + \ 406 encode_readdir_maxsz) 407 #define NFS4_dec_readdir_sz (compound_decode_hdr_maxsz + \ 408 decode_sequence_maxsz + \ 409 decode_putfh_maxsz + \ 410 decode_readdir_maxsz) 411 #define NFS4_enc_write_sz (compound_encode_hdr_maxsz + \ 412 encode_sequence_maxsz + \ 413 encode_putfh_maxsz + \ 414 encode_write_maxsz + \ 415 encode_getattr_maxsz) 416 #define NFS4_dec_write_sz (compound_decode_hdr_maxsz + \ 417 decode_sequence_maxsz + \ 418 decode_putfh_maxsz + \ 419 decode_write_maxsz + \ 420 decode_getattr_maxsz) 421 #define NFS4_enc_commit_sz (compound_encode_hdr_maxsz + \ 422 encode_sequence_maxsz + \ 423 encode_putfh_maxsz + \ 424 encode_commit_maxsz + \ 425 encode_getattr_maxsz) 426 #define NFS4_dec_commit_sz (compound_decode_hdr_maxsz + \ 427 decode_sequence_maxsz + \ 428 decode_putfh_maxsz + \ 429 decode_commit_maxsz + \ 430 decode_getattr_maxsz) 431 #define NFS4_enc_open_sz (compound_encode_hdr_maxsz + \ 432 encode_sequence_maxsz + \ 433 encode_putfh_maxsz + \ 434 encode_savefh_maxsz + \ 435 encode_open_maxsz + \ 436 encode_getfh_maxsz + \ 437 encode_getattr_maxsz + \ 438 encode_restorefh_maxsz + \ 439 encode_getattr_maxsz) 440 #define NFS4_dec_open_sz (compound_decode_hdr_maxsz + \ 441 decode_sequence_maxsz + \ 442 decode_putfh_maxsz + \ 443 decode_savefh_maxsz + \ 444 decode_open_maxsz + \ 445 decode_getfh_maxsz + \ 446 decode_getattr_maxsz + \ 447 decode_restorefh_maxsz + \ 448 decode_getattr_maxsz) 449 #define NFS4_enc_open_confirm_sz \ 450 (compound_encode_hdr_maxsz + \ 451 encode_putfh_maxsz + \ 452 encode_open_confirm_maxsz) 453 #define NFS4_dec_open_confirm_sz \ 454 (compound_decode_hdr_maxsz + \ 455 decode_putfh_maxsz + \ 456 decode_open_confirm_maxsz) 457 #define NFS4_enc_open_noattr_sz (compound_encode_hdr_maxsz + \ 458 encode_sequence_maxsz + \ 459 encode_putfh_maxsz + \ 460 encode_open_maxsz + \ 461 encode_getattr_maxsz) 462 #define NFS4_dec_open_noattr_sz (compound_decode_hdr_maxsz + \ 463 decode_sequence_maxsz + \ 464 decode_putfh_maxsz + \ 465 decode_open_maxsz + \ 466 decode_getattr_maxsz) 467 #define NFS4_enc_open_downgrade_sz \ 468 (compound_encode_hdr_maxsz + \ 469 encode_sequence_maxsz + \ 470 encode_putfh_maxsz + \ 471 encode_open_downgrade_maxsz + \ 472 encode_getattr_maxsz) 473 #define NFS4_dec_open_downgrade_sz \ 474 (compound_decode_hdr_maxsz + \ 475 decode_sequence_maxsz + \ 476 decode_putfh_maxsz + \ 477 decode_open_downgrade_maxsz + \ 478 decode_getattr_maxsz) 479 #define NFS4_enc_close_sz (compound_encode_hdr_maxsz + \ 480 encode_sequence_maxsz + \ 481 encode_putfh_maxsz + \ 482 encode_close_maxsz + \ 483 encode_getattr_maxsz) 484 #define NFS4_dec_close_sz (compound_decode_hdr_maxsz + \ 485 decode_sequence_maxsz + \ 486 decode_putfh_maxsz + \ 487 decode_close_maxsz + \ 488 decode_getattr_maxsz) 489 #define NFS4_enc_setattr_sz (compound_encode_hdr_maxsz + \ 490 encode_sequence_maxsz + \ 491 encode_putfh_maxsz + \ 492 encode_setattr_maxsz + \ 493 encode_getattr_maxsz) 494 #define NFS4_dec_setattr_sz (compound_decode_hdr_maxsz + \ 495 decode_sequence_maxsz + \ 496 decode_putfh_maxsz + \ 497 decode_setattr_maxsz + \ 498 decode_getattr_maxsz) 499 #define NFS4_enc_fsinfo_sz (compound_encode_hdr_maxsz + \ 500 encode_sequence_maxsz + \ 501 encode_putfh_maxsz + \ 502 encode_fsinfo_maxsz) 503 #define NFS4_dec_fsinfo_sz (compound_decode_hdr_maxsz + \ 504 decode_sequence_maxsz + \ 505 decode_putfh_maxsz + \ 506 decode_fsinfo_maxsz) 507 #define NFS4_enc_renew_sz (compound_encode_hdr_maxsz + \ 508 encode_renew_maxsz) 509 #define NFS4_dec_renew_sz (compound_decode_hdr_maxsz + \ 510 decode_renew_maxsz) 511 #define NFS4_enc_setclientid_sz (compound_encode_hdr_maxsz + \ 512 encode_setclientid_maxsz) 513 #define NFS4_dec_setclientid_sz (compound_decode_hdr_maxsz + \ 514 decode_setclientid_maxsz) 515 #define NFS4_enc_setclientid_confirm_sz \ 516 (compound_encode_hdr_maxsz + \ 517 encode_setclientid_confirm_maxsz + \ 518 encode_putrootfh_maxsz + \ 519 encode_fsinfo_maxsz) 520 #define NFS4_dec_setclientid_confirm_sz \ 521 (compound_decode_hdr_maxsz + \ 522 decode_setclientid_confirm_maxsz + \ 523 decode_putrootfh_maxsz + \ 524 decode_fsinfo_maxsz) 525 #define NFS4_enc_lock_sz (compound_encode_hdr_maxsz + \ 526 encode_sequence_maxsz + \ 527 encode_putfh_maxsz + \ 528 encode_lock_maxsz) 529 #define NFS4_dec_lock_sz (compound_decode_hdr_maxsz + \ 530 decode_sequence_maxsz + \ 531 decode_putfh_maxsz + \ 532 decode_lock_maxsz) 533 #define NFS4_enc_lockt_sz (compound_encode_hdr_maxsz + \ 534 encode_sequence_maxsz + \ 535 encode_putfh_maxsz + \ 536 encode_lockt_maxsz) 537 #define NFS4_dec_lockt_sz (compound_decode_hdr_maxsz + \ 538 decode_sequence_maxsz + \ 539 decode_putfh_maxsz + \ 540 decode_lockt_maxsz) 541 #define NFS4_enc_locku_sz (compound_encode_hdr_maxsz + \ 542 encode_sequence_maxsz + \ 543 encode_putfh_maxsz + \ 544 encode_locku_maxsz) 545 #define NFS4_dec_locku_sz (compound_decode_hdr_maxsz + \ 546 decode_sequence_maxsz + \ 547 decode_putfh_maxsz + \ 548 decode_locku_maxsz) 549 #define NFS4_enc_release_lockowner_sz \ 550 (compound_encode_hdr_maxsz + \ 551 encode_lockowner_maxsz) 552 #define NFS4_dec_release_lockowner_sz \ 553 (compound_decode_hdr_maxsz + \ 554 decode_lockowner_maxsz) 555 #define NFS4_enc_access_sz (compound_encode_hdr_maxsz + \ 556 encode_sequence_maxsz + \ 557 encode_putfh_maxsz + \ 558 encode_access_maxsz + \ 559 encode_getattr_maxsz) 560 #define NFS4_dec_access_sz (compound_decode_hdr_maxsz + \ 561 decode_sequence_maxsz + \ 562 decode_putfh_maxsz + \ 563 decode_access_maxsz + \ 564 decode_getattr_maxsz) 565 #define NFS4_enc_getattr_sz (compound_encode_hdr_maxsz + \ 566 encode_sequence_maxsz + \ 567 encode_putfh_maxsz + \ 568 encode_getattr_maxsz) 569 #define NFS4_dec_getattr_sz (compound_decode_hdr_maxsz + \ 570 decode_sequence_maxsz + \ 571 decode_putfh_maxsz + \ 572 decode_getattr_maxsz) 573 #define NFS4_enc_lookup_sz (compound_encode_hdr_maxsz + \ 574 encode_sequence_maxsz + \ 575 encode_putfh_maxsz + \ 576 encode_lookup_maxsz + \ 577 encode_getattr_maxsz + \ 578 encode_getfh_maxsz) 579 #define NFS4_dec_lookup_sz (compound_decode_hdr_maxsz + \ 580 decode_sequence_maxsz + \ 581 decode_putfh_maxsz + \ 582 decode_lookup_maxsz + \ 583 decode_getattr_maxsz + \ 584 decode_getfh_maxsz) 585 #define NFS4_enc_lookup_root_sz (compound_encode_hdr_maxsz + \ 586 encode_sequence_maxsz + \ 587 encode_putrootfh_maxsz + \ 588 encode_getattr_maxsz + \ 589 encode_getfh_maxsz) 590 #define NFS4_dec_lookup_root_sz (compound_decode_hdr_maxsz + \ 591 decode_sequence_maxsz + \ 592 decode_putrootfh_maxsz + \ 593 decode_getattr_maxsz + \ 594 decode_getfh_maxsz) 595 #define NFS4_enc_remove_sz (compound_encode_hdr_maxsz + \ 596 encode_sequence_maxsz + \ 597 encode_putfh_maxsz + \ 598 encode_remove_maxsz + \ 599 encode_getattr_maxsz) 600 #define NFS4_dec_remove_sz (compound_decode_hdr_maxsz + \ 601 decode_sequence_maxsz + \ 602 decode_putfh_maxsz + \ 603 decode_remove_maxsz + \ 604 decode_getattr_maxsz) 605 #define NFS4_enc_rename_sz (compound_encode_hdr_maxsz + \ 606 encode_sequence_maxsz + \ 607 encode_putfh_maxsz + \ 608 encode_savefh_maxsz + \ 609 encode_putfh_maxsz + \ 610 encode_rename_maxsz + \ 611 encode_getattr_maxsz + \ 612 encode_restorefh_maxsz + \ 613 encode_getattr_maxsz) 614 #define NFS4_dec_rename_sz (compound_decode_hdr_maxsz + \ 615 decode_sequence_maxsz + \ 616 decode_putfh_maxsz + \ 617 decode_savefh_maxsz + \ 618 decode_putfh_maxsz + \ 619 decode_rename_maxsz + \ 620 decode_getattr_maxsz + \ 621 decode_restorefh_maxsz + \ 622 decode_getattr_maxsz) 623 #define NFS4_enc_link_sz (compound_encode_hdr_maxsz + \ 624 encode_sequence_maxsz + \ 625 encode_putfh_maxsz + \ 626 encode_savefh_maxsz + \ 627 encode_putfh_maxsz + \ 628 encode_link_maxsz + \ 629 decode_getattr_maxsz + \ 630 encode_restorefh_maxsz + \ 631 decode_getattr_maxsz) 632 #define NFS4_dec_link_sz (compound_decode_hdr_maxsz + \ 633 decode_sequence_maxsz + \ 634 decode_putfh_maxsz + \ 635 decode_savefh_maxsz + \ 636 decode_putfh_maxsz + \ 637 decode_link_maxsz + \ 638 decode_getattr_maxsz + \ 639 decode_restorefh_maxsz + \ 640 decode_getattr_maxsz) 641 #define NFS4_enc_symlink_sz (compound_encode_hdr_maxsz + \ 642 encode_sequence_maxsz + \ 643 encode_putfh_maxsz + \ 644 encode_symlink_maxsz + \ 645 encode_getattr_maxsz + \ 646 encode_getfh_maxsz) 647 #define NFS4_dec_symlink_sz (compound_decode_hdr_maxsz + \ 648 decode_sequence_maxsz + \ 649 decode_putfh_maxsz + \ 650 decode_symlink_maxsz + \ 651 decode_getattr_maxsz + \ 652 decode_getfh_maxsz) 653 #define NFS4_enc_create_sz (compound_encode_hdr_maxsz + \ 654 encode_sequence_maxsz + \ 655 encode_putfh_maxsz + \ 656 encode_savefh_maxsz + \ 657 encode_create_maxsz + \ 658 encode_getfh_maxsz + \ 659 encode_getattr_maxsz + \ 660 encode_restorefh_maxsz + \ 661 encode_getattr_maxsz) 662 #define NFS4_dec_create_sz (compound_decode_hdr_maxsz + \ 663 decode_sequence_maxsz + \ 664 decode_putfh_maxsz + \ 665 decode_savefh_maxsz + \ 666 decode_create_maxsz + \ 667 decode_getfh_maxsz + \ 668 decode_getattr_maxsz + \ 669 decode_restorefh_maxsz + \ 670 decode_getattr_maxsz) 671 #define NFS4_enc_pathconf_sz (compound_encode_hdr_maxsz + \ 672 encode_sequence_maxsz + \ 673 encode_putfh_maxsz + \ 674 encode_getattr_maxsz) 675 #define NFS4_dec_pathconf_sz (compound_decode_hdr_maxsz + \ 676 decode_sequence_maxsz + \ 677 decode_putfh_maxsz + \ 678 decode_getattr_maxsz) 679 #define NFS4_enc_statfs_sz (compound_encode_hdr_maxsz + \ 680 encode_sequence_maxsz + \ 681 encode_putfh_maxsz + \ 682 encode_statfs_maxsz) 683 #define NFS4_dec_statfs_sz (compound_decode_hdr_maxsz + \ 684 decode_sequence_maxsz + \ 685 decode_putfh_maxsz + \ 686 decode_statfs_maxsz) 687 #define NFS4_enc_server_caps_sz (compound_encode_hdr_maxsz + \ 688 encode_sequence_maxsz + \ 689 encode_putfh_maxsz + \ 690 encode_getattr_maxsz) 691 #define NFS4_dec_server_caps_sz (compound_decode_hdr_maxsz + \ 692 decode_sequence_maxsz + \ 693 decode_putfh_maxsz + \ 694 decode_getattr_maxsz) 695 #define NFS4_enc_delegreturn_sz (compound_encode_hdr_maxsz + \ 696 encode_sequence_maxsz + \ 697 encode_putfh_maxsz + \ 698 encode_delegreturn_maxsz + \ 699 encode_getattr_maxsz) 700 #define NFS4_dec_delegreturn_sz (compound_decode_hdr_maxsz + \ 701 decode_sequence_maxsz + \ 702 decode_delegreturn_maxsz + \ 703 decode_getattr_maxsz) 704 #define NFS4_enc_getacl_sz (compound_encode_hdr_maxsz + \ 705 encode_sequence_maxsz + \ 706 encode_putfh_maxsz + \ 707 encode_getacl_maxsz) 708 #define NFS4_dec_getacl_sz (compound_decode_hdr_maxsz + \ 709 decode_sequence_maxsz + \ 710 decode_putfh_maxsz + \ 711 decode_getacl_maxsz) 712 #define NFS4_enc_setacl_sz (compound_encode_hdr_maxsz + \ 713 encode_sequence_maxsz + \ 714 encode_putfh_maxsz + \ 715 encode_setacl_maxsz) 716 #define NFS4_dec_setacl_sz (compound_decode_hdr_maxsz + \ 717 decode_sequence_maxsz + \ 718 decode_putfh_maxsz + \ 719 decode_setacl_maxsz) 720 #define NFS4_enc_fs_locations_sz \ 721 (compound_encode_hdr_maxsz + \ 722 encode_sequence_maxsz + \ 723 encode_putfh_maxsz + \ 724 encode_lookup_maxsz + \ 725 encode_fs_locations_maxsz) 726 #define NFS4_dec_fs_locations_sz \ 727 (compound_decode_hdr_maxsz + \ 728 decode_sequence_maxsz + \ 729 decode_putfh_maxsz + \ 730 decode_lookup_maxsz + \ 731 decode_fs_locations_maxsz) 732 #define NFS4_enc_secinfo_sz (compound_encode_hdr_maxsz + \ 733 encode_sequence_maxsz + \ 734 encode_putfh_maxsz + \ 735 encode_secinfo_maxsz) 736 #define NFS4_dec_secinfo_sz (compound_decode_hdr_maxsz + \ 737 decode_sequence_maxsz + \ 738 decode_putfh_maxsz + \ 739 decode_secinfo_maxsz) 740 #if defined(CONFIG_NFS_V4_1) 741 #define NFS4_enc_exchange_id_sz \ 742 (compound_encode_hdr_maxsz + \ 743 encode_exchange_id_maxsz) 744 #define NFS4_dec_exchange_id_sz \ 745 (compound_decode_hdr_maxsz + \ 746 decode_exchange_id_maxsz) 747 #define NFS4_enc_create_session_sz \ 748 (compound_encode_hdr_maxsz + \ 749 encode_create_session_maxsz) 750 #define NFS4_dec_create_session_sz \ 751 (compound_decode_hdr_maxsz + \ 752 decode_create_session_maxsz) 753 #define NFS4_enc_destroy_session_sz (compound_encode_hdr_maxsz + \ 754 encode_destroy_session_maxsz) 755 #define NFS4_dec_destroy_session_sz (compound_decode_hdr_maxsz + \ 756 decode_destroy_session_maxsz) 757 #define NFS4_enc_sequence_sz \ 758 (compound_decode_hdr_maxsz + \ 759 encode_sequence_maxsz) 760 #define NFS4_dec_sequence_sz \ 761 (compound_decode_hdr_maxsz + \ 762 decode_sequence_maxsz) 763 #define NFS4_enc_get_lease_time_sz (compound_encode_hdr_maxsz + \ 764 encode_sequence_maxsz + \ 765 encode_putrootfh_maxsz + \ 766 encode_fsinfo_maxsz) 767 #define NFS4_dec_get_lease_time_sz (compound_decode_hdr_maxsz + \ 768 decode_sequence_maxsz + \ 769 decode_putrootfh_maxsz + \ 770 decode_fsinfo_maxsz) 771 #define NFS4_enc_reclaim_complete_sz (compound_encode_hdr_maxsz + \ 772 encode_sequence_maxsz + \ 773 encode_reclaim_complete_maxsz) 774 #define NFS4_dec_reclaim_complete_sz (compound_decode_hdr_maxsz + \ 775 decode_sequence_maxsz + \ 776 decode_reclaim_complete_maxsz) 777 #define NFS4_enc_getdevicelist_sz (compound_encode_hdr_maxsz + \ 778 encode_sequence_maxsz + \ 779 encode_putfh_maxsz + \ 780 encode_getdevicelist_maxsz) 781 #define NFS4_dec_getdevicelist_sz (compound_decode_hdr_maxsz + \ 782 decode_sequence_maxsz + \ 783 decode_putfh_maxsz + \ 784 decode_getdevicelist_maxsz) 785 #define NFS4_enc_getdeviceinfo_sz (compound_encode_hdr_maxsz + \ 786 encode_sequence_maxsz +\ 787 encode_getdeviceinfo_maxsz) 788 #define NFS4_dec_getdeviceinfo_sz (compound_decode_hdr_maxsz + \ 789 decode_sequence_maxsz + \ 790 decode_getdeviceinfo_maxsz) 791 #define NFS4_enc_layoutget_sz (compound_encode_hdr_maxsz + \ 792 encode_sequence_maxsz + \ 793 encode_putfh_maxsz + \ 794 encode_layoutget_maxsz) 795 #define NFS4_dec_layoutget_sz (compound_decode_hdr_maxsz + \ 796 decode_sequence_maxsz + \ 797 decode_putfh_maxsz + \ 798 decode_layoutget_maxsz) 799 #define NFS4_enc_layoutcommit_sz (compound_encode_hdr_maxsz + \ 800 encode_sequence_maxsz +\ 801 encode_putfh_maxsz + \ 802 encode_layoutcommit_maxsz + \ 803 encode_getattr_maxsz) 804 #define NFS4_dec_layoutcommit_sz (compound_decode_hdr_maxsz + \ 805 decode_sequence_maxsz + \ 806 decode_putfh_maxsz + \ 807 decode_layoutcommit_maxsz + \ 808 decode_getattr_maxsz) 809 #define NFS4_enc_layoutreturn_sz (compound_encode_hdr_maxsz + \ 810 encode_sequence_maxsz + \ 811 encode_putfh_maxsz + \ 812 encode_layoutreturn_maxsz) 813 #define NFS4_dec_layoutreturn_sz (compound_decode_hdr_maxsz + \ 814 decode_sequence_maxsz + \ 815 decode_putfh_maxsz + \ 816 decode_layoutreturn_maxsz) 817 #define NFS4_enc_secinfo_no_name_sz (compound_encode_hdr_maxsz + \ 818 encode_sequence_maxsz + \ 819 encode_putrootfh_maxsz +\ 820 encode_secinfo_no_name_maxsz) 821 #define NFS4_dec_secinfo_no_name_sz (compound_decode_hdr_maxsz + \ 822 decode_sequence_maxsz + \ 823 decode_putrootfh_maxsz + \ 824 decode_secinfo_no_name_maxsz) 825 #define NFS4_enc_test_stateid_sz (compound_encode_hdr_maxsz + \ 826 encode_sequence_maxsz + \ 827 encode_test_stateid_maxsz) 828 #define NFS4_dec_test_stateid_sz (compound_decode_hdr_maxsz + \ 829 decode_sequence_maxsz + \ 830 decode_test_stateid_maxsz) 831 #define NFS4_enc_free_stateid_sz (compound_encode_hdr_maxsz + \ 832 encode_sequence_maxsz + \ 833 encode_free_stateid_maxsz) 834 #define NFS4_dec_free_stateid_sz (compound_decode_hdr_maxsz + \ 835 decode_sequence_maxsz + \ 836 decode_free_stateid_maxsz) 837 838 const u32 nfs41_maxwrite_overhead = ((RPC_MAX_HEADER_WITH_AUTH + 839 compound_encode_hdr_maxsz + 840 encode_sequence_maxsz + 841 encode_putfh_maxsz + 842 encode_getattr_maxsz) * 843 XDR_UNIT); 844 845 const u32 nfs41_maxread_overhead = ((RPC_MAX_HEADER_WITH_AUTH + 846 compound_decode_hdr_maxsz + 847 decode_sequence_maxsz + 848 decode_putfh_maxsz) * 849 XDR_UNIT); 850 #endif /* CONFIG_NFS_V4_1 */ 851 852 static unsigned short send_implementation_id = 1; 853 854 module_param(send_implementation_id, ushort, 0644); 855 MODULE_PARM_DESC(send_implementation_id, 856 "Send implementation ID with NFSv4.1 exchange_id"); 857 858 static const umode_t nfs_type2fmt[] = { 859 [NF4BAD] = 0, 860 [NF4REG] = S_IFREG, 861 [NF4DIR] = S_IFDIR, 862 [NF4BLK] = S_IFBLK, 863 [NF4CHR] = S_IFCHR, 864 [NF4LNK] = S_IFLNK, 865 [NF4SOCK] = S_IFSOCK, 866 [NF4FIFO] = S_IFIFO, 867 [NF4ATTRDIR] = 0, 868 [NF4NAMEDATTR] = 0, 869 }; 870 871 struct compound_hdr { 872 int32_t status; 873 uint32_t nops; 874 __be32 * nops_p; 875 uint32_t taglen; 876 char * tag; 877 uint32_t replen; /* expected reply words */ 878 u32 minorversion; 879 }; 880 881 static __be32 *reserve_space(struct xdr_stream *xdr, size_t nbytes) 882 { 883 __be32 *p = xdr_reserve_space(xdr, nbytes); 884 BUG_ON(!p); 885 return p; 886 } 887 888 static void encode_opaque_fixed(struct xdr_stream *xdr, const void *buf, size_t len) 889 { 890 __be32 *p; 891 892 p = xdr_reserve_space(xdr, len); 893 xdr_encode_opaque_fixed(p, buf, len); 894 } 895 896 static void encode_string(struct xdr_stream *xdr, unsigned int len, const char *str) 897 { 898 __be32 *p; 899 900 p = reserve_space(xdr, 4 + len); 901 xdr_encode_opaque(p, str, len); 902 } 903 904 static void encode_uint32(struct xdr_stream *xdr, u32 n) 905 { 906 __be32 *p; 907 908 p = reserve_space(xdr, 4); 909 *p = cpu_to_be32(n); 910 } 911 912 static void encode_uint64(struct xdr_stream *xdr, u64 n) 913 { 914 __be32 *p; 915 916 p = reserve_space(xdr, 8); 917 xdr_encode_hyper(p, n); 918 } 919 920 static void encode_nfs4_seqid(struct xdr_stream *xdr, 921 const struct nfs_seqid *seqid) 922 { 923 encode_uint32(xdr, seqid->sequence->counter); 924 } 925 926 static void encode_compound_hdr(struct xdr_stream *xdr, 927 struct rpc_rqst *req, 928 struct compound_hdr *hdr) 929 { 930 __be32 *p; 931 struct rpc_auth *auth = req->rq_cred->cr_auth; 932 933 /* initialize running count of expected bytes in reply. 934 * NOTE: the replied tag SHOULD be the same is the one sent, 935 * but this is not required as a MUST for the server to do so. */ 936 hdr->replen = RPC_REPHDRSIZE + auth->au_rslack + 3 + hdr->taglen; 937 938 BUG_ON(hdr->taglen > NFS4_MAXTAGLEN); 939 encode_string(xdr, hdr->taglen, hdr->tag); 940 p = reserve_space(xdr, 8); 941 *p++ = cpu_to_be32(hdr->minorversion); 942 hdr->nops_p = p; 943 *p = cpu_to_be32(hdr->nops); 944 } 945 946 static void encode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 op, 947 uint32_t replen, 948 struct compound_hdr *hdr) 949 { 950 encode_uint32(xdr, op); 951 hdr->nops++; 952 hdr->replen += replen; 953 } 954 955 static void encode_nops(struct compound_hdr *hdr) 956 { 957 BUG_ON(hdr->nops > NFS4_MAX_OPS); 958 *hdr->nops_p = htonl(hdr->nops); 959 } 960 961 static void encode_nfs4_stateid(struct xdr_stream *xdr, const nfs4_stateid *stateid) 962 { 963 encode_opaque_fixed(xdr, stateid, NFS4_STATEID_SIZE); 964 } 965 966 static void encode_nfs4_verifier(struct xdr_stream *xdr, const nfs4_verifier *verf) 967 { 968 encode_opaque_fixed(xdr, verf->data, NFS4_VERIFIER_SIZE); 969 } 970 971 static void encode_attrs(struct xdr_stream *xdr, const struct iattr *iap, const struct nfs_server *server) 972 { 973 char owner_name[IDMAP_NAMESZ]; 974 char owner_group[IDMAP_NAMESZ]; 975 int owner_namelen = 0; 976 int owner_grouplen = 0; 977 __be32 *p; 978 __be32 *q; 979 int len; 980 uint32_t bmval0 = 0; 981 uint32_t bmval1 = 0; 982 983 /* 984 * We reserve enough space to write the entire attribute buffer at once. 985 * In the worst-case, this would be 986 * 12(bitmap) + 4(attrlen) + 8(size) + 4(mode) + 4(atime) + 4(mtime) 987 * = 36 bytes, plus any contribution from variable-length fields 988 * such as owner/group. 989 */ 990 len = 16; 991 992 /* Sigh */ 993 if (iap->ia_valid & ATTR_SIZE) 994 len += 8; 995 if (iap->ia_valid & ATTR_MODE) 996 len += 4; 997 if (iap->ia_valid & ATTR_UID) { 998 owner_namelen = nfs_map_uid_to_name(server, iap->ia_uid, owner_name, IDMAP_NAMESZ); 999 if (owner_namelen < 0) { 1000 dprintk("nfs: couldn't resolve uid %d to string\n", 1001 iap->ia_uid); 1002 /* XXX */ 1003 strcpy(owner_name, "nobody"); 1004 owner_namelen = sizeof("nobody") - 1; 1005 /* goto out; */ 1006 } 1007 len += 4 + (XDR_QUADLEN(owner_namelen) << 2); 1008 } 1009 if (iap->ia_valid & ATTR_GID) { 1010 owner_grouplen = nfs_map_gid_to_group(server, iap->ia_gid, owner_group, IDMAP_NAMESZ); 1011 if (owner_grouplen < 0) { 1012 dprintk("nfs: couldn't resolve gid %d to string\n", 1013 iap->ia_gid); 1014 strcpy(owner_group, "nobody"); 1015 owner_grouplen = sizeof("nobody") - 1; 1016 /* goto out; */ 1017 } 1018 len += 4 + (XDR_QUADLEN(owner_grouplen) << 2); 1019 } 1020 if (iap->ia_valid & ATTR_ATIME_SET) 1021 len += 16; 1022 else if (iap->ia_valid & ATTR_ATIME) 1023 len += 4; 1024 if (iap->ia_valid & ATTR_MTIME_SET) 1025 len += 16; 1026 else if (iap->ia_valid & ATTR_MTIME) 1027 len += 4; 1028 p = reserve_space(xdr, len); 1029 1030 /* 1031 * We write the bitmap length now, but leave the bitmap and the attribute 1032 * buffer length to be backfilled at the end of this routine. 1033 */ 1034 *p++ = cpu_to_be32(2); 1035 q = p; 1036 p += 3; 1037 1038 if (iap->ia_valid & ATTR_SIZE) { 1039 bmval0 |= FATTR4_WORD0_SIZE; 1040 p = xdr_encode_hyper(p, iap->ia_size); 1041 } 1042 if (iap->ia_valid & ATTR_MODE) { 1043 bmval1 |= FATTR4_WORD1_MODE; 1044 *p++ = cpu_to_be32(iap->ia_mode & S_IALLUGO); 1045 } 1046 if (iap->ia_valid & ATTR_UID) { 1047 bmval1 |= FATTR4_WORD1_OWNER; 1048 p = xdr_encode_opaque(p, owner_name, owner_namelen); 1049 } 1050 if (iap->ia_valid & ATTR_GID) { 1051 bmval1 |= FATTR4_WORD1_OWNER_GROUP; 1052 p = xdr_encode_opaque(p, owner_group, owner_grouplen); 1053 } 1054 if (iap->ia_valid & ATTR_ATIME_SET) { 1055 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET; 1056 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME); 1057 *p++ = cpu_to_be32(0); 1058 *p++ = cpu_to_be32(iap->ia_atime.tv_sec); 1059 *p++ = cpu_to_be32(iap->ia_atime.tv_nsec); 1060 } 1061 else if (iap->ia_valid & ATTR_ATIME) { 1062 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET; 1063 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME); 1064 } 1065 if (iap->ia_valid & ATTR_MTIME_SET) { 1066 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET; 1067 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME); 1068 *p++ = cpu_to_be32(0); 1069 *p++ = cpu_to_be32(iap->ia_mtime.tv_sec); 1070 *p++ = cpu_to_be32(iap->ia_mtime.tv_nsec); 1071 } 1072 else if (iap->ia_valid & ATTR_MTIME) { 1073 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET; 1074 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME); 1075 } 1076 1077 /* 1078 * Now we backfill the bitmap and the attribute buffer length. 1079 */ 1080 if (len != ((char *)p - (char *)q) + 4) { 1081 printk(KERN_ERR "NFS: Attr length error, %u != %Zu\n", 1082 len, ((char *)p - (char *)q) + 4); 1083 BUG(); 1084 } 1085 len = (char *)p - (char *)q - 12; 1086 *q++ = htonl(bmval0); 1087 *q++ = htonl(bmval1); 1088 *q = htonl(len); 1089 1090 /* out: */ 1091 } 1092 1093 static void encode_access(struct xdr_stream *xdr, u32 access, struct compound_hdr *hdr) 1094 { 1095 encode_op_hdr(xdr, OP_ACCESS, decode_access_maxsz, hdr); 1096 encode_uint32(xdr, access); 1097 } 1098 1099 static void encode_close(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr) 1100 { 1101 encode_op_hdr(xdr, OP_CLOSE, decode_close_maxsz, hdr); 1102 encode_nfs4_seqid(xdr, arg->seqid); 1103 encode_nfs4_stateid(xdr, arg->stateid); 1104 } 1105 1106 static void encode_commit(struct xdr_stream *xdr, const struct nfs_writeargs *args, struct compound_hdr *hdr) 1107 { 1108 __be32 *p; 1109 1110 encode_op_hdr(xdr, OP_COMMIT, decode_commit_maxsz, hdr); 1111 p = reserve_space(xdr, 12); 1112 p = xdr_encode_hyper(p, args->offset); 1113 *p = cpu_to_be32(args->count); 1114 } 1115 1116 static void encode_create(struct xdr_stream *xdr, const struct nfs4_create_arg *create, struct compound_hdr *hdr) 1117 { 1118 __be32 *p; 1119 1120 encode_op_hdr(xdr, OP_CREATE, decode_create_maxsz, hdr); 1121 encode_uint32(xdr, create->ftype); 1122 1123 switch (create->ftype) { 1124 case NF4LNK: 1125 p = reserve_space(xdr, 4); 1126 *p = cpu_to_be32(create->u.symlink.len); 1127 xdr_write_pages(xdr, create->u.symlink.pages, 0, create->u.symlink.len); 1128 break; 1129 1130 case NF4BLK: case NF4CHR: 1131 p = reserve_space(xdr, 8); 1132 *p++ = cpu_to_be32(create->u.device.specdata1); 1133 *p = cpu_to_be32(create->u.device.specdata2); 1134 break; 1135 1136 default: 1137 break; 1138 } 1139 1140 encode_string(xdr, create->name->len, create->name->name); 1141 encode_attrs(xdr, create->attrs, create->server); 1142 } 1143 1144 static void encode_getattr_one(struct xdr_stream *xdr, uint32_t bitmap, struct compound_hdr *hdr) 1145 { 1146 __be32 *p; 1147 1148 encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr); 1149 p = reserve_space(xdr, 8); 1150 *p++ = cpu_to_be32(1); 1151 *p = cpu_to_be32(bitmap); 1152 } 1153 1154 static void encode_getattr_two(struct xdr_stream *xdr, uint32_t bm0, uint32_t bm1, struct compound_hdr *hdr) 1155 { 1156 __be32 *p; 1157 1158 encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr); 1159 p = reserve_space(xdr, 12); 1160 *p++ = cpu_to_be32(2); 1161 *p++ = cpu_to_be32(bm0); 1162 *p = cpu_to_be32(bm1); 1163 } 1164 1165 static void 1166 encode_getattr_three(struct xdr_stream *xdr, 1167 uint32_t bm0, uint32_t bm1, uint32_t bm2, 1168 struct compound_hdr *hdr) 1169 { 1170 __be32 *p; 1171 1172 encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr); 1173 if (bm2) { 1174 p = reserve_space(xdr, 16); 1175 *p++ = cpu_to_be32(3); 1176 *p++ = cpu_to_be32(bm0); 1177 *p++ = cpu_to_be32(bm1); 1178 *p = cpu_to_be32(bm2); 1179 } else if (bm1) { 1180 p = reserve_space(xdr, 12); 1181 *p++ = cpu_to_be32(2); 1182 *p++ = cpu_to_be32(bm0); 1183 *p = cpu_to_be32(bm1); 1184 } else { 1185 p = reserve_space(xdr, 8); 1186 *p++ = cpu_to_be32(1); 1187 *p = cpu_to_be32(bm0); 1188 } 1189 } 1190 1191 static void encode_getfattr(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr) 1192 { 1193 encode_getattr_two(xdr, bitmask[0] & nfs4_fattr_bitmap[0], 1194 bitmask[1] & nfs4_fattr_bitmap[1], hdr); 1195 } 1196 1197 static void encode_fsinfo(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr) 1198 { 1199 encode_getattr_three(xdr, 1200 bitmask[0] & nfs4_fsinfo_bitmap[0], 1201 bitmask[1] & nfs4_fsinfo_bitmap[1], 1202 bitmask[2] & nfs4_fsinfo_bitmap[2], 1203 hdr); 1204 } 1205 1206 static void encode_fs_locations(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr) 1207 { 1208 encode_getattr_two(xdr, bitmask[0] & nfs4_fs_locations_bitmap[0], 1209 bitmask[1] & nfs4_fs_locations_bitmap[1], hdr); 1210 } 1211 1212 static void encode_getfh(struct xdr_stream *xdr, struct compound_hdr *hdr) 1213 { 1214 encode_op_hdr(xdr, OP_GETFH, decode_getfh_maxsz, hdr); 1215 } 1216 1217 static void encode_link(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr) 1218 { 1219 encode_op_hdr(xdr, OP_LINK, decode_link_maxsz, hdr); 1220 encode_string(xdr, name->len, name->name); 1221 } 1222 1223 static inline int nfs4_lock_type(struct file_lock *fl, int block) 1224 { 1225 if ((fl->fl_type & (F_RDLCK|F_WRLCK|F_UNLCK)) == F_RDLCK) 1226 return block ? NFS4_READW_LT : NFS4_READ_LT; 1227 return block ? NFS4_WRITEW_LT : NFS4_WRITE_LT; 1228 } 1229 1230 static inline uint64_t nfs4_lock_length(struct file_lock *fl) 1231 { 1232 if (fl->fl_end == OFFSET_MAX) 1233 return ~(uint64_t)0; 1234 return fl->fl_end - fl->fl_start + 1; 1235 } 1236 1237 static void encode_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner) 1238 { 1239 __be32 *p; 1240 1241 p = reserve_space(xdr, 32); 1242 p = xdr_encode_hyper(p, lowner->clientid); 1243 *p++ = cpu_to_be32(20); 1244 p = xdr_encode_opaque_fixed(p, "lock id:", 8); 1245 *p++ = cpu_to_be32(lowner->s_dev); 1246 xdr_encode_hyper(p, lowner->id); 1247 } 1248 1249 /* 1250 * opcode,type,reclaim,offset,length,new_lock_owner = 32 1251 * open_seqid,open_stateid,lock_seqid,lock_owner.clientid, lock_owner.id = 40 1252 */ 1253 static void encode_lock(struct xdr_stream *xdr, const struct nfs_lock_args *args, struct compound_hdr *hdr) 1254 { 1255 __be32 *p; 1256 1257 encode_op_hdr(xdr, OP_LOCK, decode_lock_maxsz, hdr); 1258 p = reserve_space(xdr, 28); 1259 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, args->block)); 1260 *p++ = cpu_to_be32(args->reclaim); 1261 p = xdr_encode_hyper(p, args->fl->fl_start); 1262 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl)); 1263 *p = cpu_to_be32(args->new_lock_owner); 1264 if (args->new_lock_owner){ 1265 encode_nfs4_seqid(xdr, args->open_seqid); 1266 encode_nfs4_stateid(xdr, args->open_stateid); 1267 encode_nfs4_seqid(xdr, args->lock_seqid); 1268 encode_lockowner(xdr, &args->lock_owner); 1269 } 1270 else { 1271 encode_nfs4_stateid(xdr, args->lock_stateid); 1272 encode_nfs4_seqid(xdr, args->lock_seqid); 1273 } 1274 } 1275 1276 static void encode_lockt(struct xdr_stream *xdr, const struct nfs_lockt_args *args, struct compound_hdr *hdr) 1277 { 1278 __be32 *p; 1279 1280 encode_op_hdr(xdr, OP_LOCKT, decode_lockt_maxsz, hdr); 1281 p = reserve_space(xdr, 20); 1282 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, 0)); 1283 p = xdr_encode_hyper(p, args->fl->fl_start); 1284 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl)); 1285 encode_lockowner(xdr, &args->lock_owner); 1286 } 1287 1288 static void encode_locku(struct xdr_stream *xdr, const struct nfs_locku_args *args, struct compound_hdr *hdr) 1289 { 1290 __be32 *p; 1291 1292 encode_op_hdr(xdr, OP_LOCKU, decode_locku_maxsz, hdr); 1293 encode_uint32(xdr, nfs4_lock_type(args->fl, 0)); 1294 encode_nfs4_seqid(xdr, args->seqid); 1295 encode_nfs4_stateid(xdr, args->stateid); 1296 p = reserve_space(xdr, 16); 1297 p = xdr_encode_hyper(p, args->fl->fl_start); 1298 xdr_encode_hyper(p, nfs4_lock_length(args->fl)); 1299 } 1300 1301 static void encode_release_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner, struct compound_hdr *hdr) 1302 { 1303 encode_op_hdr(xdr, OP_RELEASE_LOCKOWNER, decode_release_lockowner_maxsz, hdr); 1304 encode_lockowner(xdr, lowner); 1305 } 1306 1307 static void encode_lookup(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr) 1308 { 1309 encode_op_hdr(xdr, OP_LOOKUP, decode_lookup_maxsz, hdr); 1310 encode_string(xdr, name->len, name->name); 1311 } 1312 1313 static void encode_share_access(struct xdr_stream *xdr, fmode_t fmode) 1314 { 1315 __be32 *p; 1316 1317 p = reserve_space(xdr, 8); 1318 switch (fmode & (FMODE_READ|FMODE_WRITE)) { 1319 case FMODE_READ: 1320 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_READ); 1321 break; 1322 case FMODE_WRITE: 1323 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_WRITE); 1324 break; 1325 case FMODE_READ|FMODE_WRITE: 1326 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_BOTH); 1327 break; 1328 default: 1329 *p++ = cpu_to_be32(0); 1330 } 1331 *p = cpu_to_be32(0); /* for linux, share_deny = 0 always */ 1332 } 1333 1334 static inline void encode_openhdr(struct xdr_stream *xdr, const struct nfs_openargs *arg) 1335 { 1336 __be32 *p; 1337 /* 1338 * opcode 4, seqid 4, share_access 4, share_deny 4, clientid 8, ownerlen 4, 1339 * owner 4 = 32 1340 */ 1341 encode_nfs4_seqid(xdr, arg->seqid); 1342 encode_share_access(xdr, arg->fmode); 1343 p = reserve_space(xdr, 32); 1344 p = xdr_encode_hyper(p, arg->clientid); 1345 *p++ = cpu_to_be32(20); 1346 p = xdr_encode_opaque_fixed(p, "open id:", 8); 1347 *p++ = cpu_to_be32(arg->server->s_dev); 1348 xdr_encode_hyper(p, arg->id); 1349 } 1350 1351 static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_openargs *arg) 1352 { 1353 __be32 *p; 1354 struct nfs_client *clp; 1355 1356 p = reserve_space(xdr, 4); 1357 switch(arg->open_flags & O_EXCL) { 1358 case 0: 1359 *p = cpu_to_be32(NFS4_CREATE_UNCHECKED); 1360 encode_attrs(xdr, arg->u.attrs, arg->server); 1361 break; 1362 default: 1363 clp = arg->server->nfs_client; 1364 if (clp->cl_mvops->minor_version > 0) { 1365 if (nfs4_has_persistent_session(clp)) { 1366 *p = cpu_to_be32(NFS4_CREATE_GUARDED); 1367 encode_attrs(xdr, arg->u.attrs, arg->server); 1368 } else { 1369 struct iattr dummy; 1370 1371 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE4_1); 1372 encode_nfs4_verifier(xdr, &arg->u.verifier); 1373 dummy.ia_valid = 0; 1374 encode_attrs(xdr, &dummy, arg->server); 1375 } 1376 } else { 1377 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE); 1378 encode_nfs4_verifier(xdr, &arg->u.verifier); 1379 } 1380 } 1381 } 1382 1383 static void encode_opentype(struct xdr_stream *xdr, const struct nfs_openargs *arg) 1384 { 1385 __be32 *p; 1386 1387 p = reserve_space(xdr, 4); 1388 switch (arg->open_flags & O_CREAT) { 1389 case 0: 1390 *p = cpu_to_be32(NFS4_OPEN_NOCREATE); 1391 break; 1392 default: 1393 BUG_ON(arg->claim != NFS4_OPEN_CLAIM_NULL); 1394 *p = cpu_to_be32(NFS4_OPEN_CREATE); 1395 encode_createmode(xdr, arg); 1396 } 1397 } 1398 1399 static inline void encode_delegation_type(struct xdr_stream *xdr, fmode_t delegation_type) 1400 { 1401 __be32 *p; 1402 1403 p = reserve_space(xdr, 4); 1404 switch (delegation_type) { 1405 case 0: 1406 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_NONE); 1407 break; 1408 case FMODE_READ: 1409 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_READ); 1410 break; 1411 case FMODE_WRITE|FMODE_READ: 1412 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_WRITE); 1413 break; 1414 default: 1415 BUG(); 1416 } 1417 } 1418 1419 static inline void encode_claim_null(struct xdr_stream *xdr, const struct qstr *name) 1420 { 1421 __be32 *p; 1422 1423 p = reserve_space(xdr, 4); 1424 *p = cpu_to_be32(NFS4_OPEN_CLAIM_NULL); 1425 encode_string(xdr, name->len, name->name); 1426 } 1427 1428 static inline void encode_claim_previous(struct xdr_stream *xdr, fmode_t type) 1429 { 1430 __be32 *p; 1431 1432 p = reserve_space(xdr, 4); 1433 *p = cpu_to_be32(NFS4_OPEN_CLAIM_PREVIOUS); 1434 encode_delegation_type(xdr, type); 1435 } 1436 1437 static inline void encode_claim_delegate_cur(struct xdr_stream *xdr, const struct qstr *name, const nfs4_stateid *stateid) 1438 { 1439 __be32 *p; 1440 1441 p = reserve_space(xdr, 4); 1442 *p = cpu_to_be32(NFS4_OPEN_CLAIM_DELEGATE_CUR); 1443 encode_nfs4_stateid(xdr, stateid); 1444 encode_string(xdr, name->len, name->name); 1445 } 1446 1447 static void encode_open(struct xdr_stream *xdr, const struct nfs_openargs *arg, struct compound_hdr *hdr) 1448 { 1449 encode_op_hdr(xdr, OP_OPEN, decode_open_maxsz, hdr); 1450 encode_openhdr(xdr, arg); 1451 encode_opentype(xdr, arg); 1452 switch (arg->claim) { 1453 case NFS4_OPEN_CLAIM_NULL: 1454 encode_claim_null(xdr, arg->name); 1455 break; 1456 case NFS4_OPEN_CLAIM_PREVIOUS: 1457 encode_claim_previous(xdr, arg->u.delegation_type); 1458 break; 1459 case NFS4_OPEN_CLAIM_DELEGATE_CUR: 1460 encode_claim_delegate_cur(xdr, arg->name, &arg->u.delegation); 1461 break; 1462 default: 1463 BUG(); 1464 } 1465 } 1466 1467 static void encode_open_confirm(struct xdr_stream *xdr, const struct nfs_open_confirmargs *arg, struct compound_hdr *hdr) 1468 { 1469 encode_op_hdr(xdr, OP_OPEN_CONFIRM, decode_open_confirm_maxsz, hdr); 1470 encode_nfs4_stateid(xdr, arg->stateid); 1471 encode_nfs4_seqid(xdr, arg->seqid); 1472 } 1473 1474 static void encode_open_downgrade(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr) 1475 { 1476 encode_op_hdr(xdr, OP_OPEN_DOWNGRADE, decode_open_downgrade_maxsz, hdr); 1477 encode_nfs4_stateid(xdr, arg->stateid); 1478 encode_nfs4_seqid(xdr, arg->seqid); 1479 encode_share_access(xdr, arg->fmode); 1480 } 1481 1482 static void 1483 encode_putfh(struct xdr_stream *xdr, const struct nfs_fh *fh, struct compound_hdr *hdr) 1484 { 1485 encode_op_hdr(xdr, OP_PUTFH, decode_putfh_maxsz, hdr); 1486 encode_string(xdr, fh->size, fh->data); 1487 } 1488 1489 static void encode_putrootfh(struct xdr_stream *xdr, struct compound_hdr *hdr) 1490 { 1491 encode_op_hdr(xdr, OP_PUTROOTFH, decode_putrootfh_maxsz, hdr); 1492 } 1493 1494 static void encode_open_stateid(struct xdr_stream *xdr, 1495 const struct nfs_open_context *ctx, 1496 const struct nfs_lock_context *l_ctx, 1497 fmode_t fmode, 1498 int zero_seqid) 1499 { 1500 nfs4_stateid stateid; 1501 1502 if (ctx->state != NULL) { 1503 nfs4_select_rw_stateid(&stateid, ctx->state, 1504 fmode, l_ctx->lockowner, l_ctx->pid); 1505 if (zero_seqid) 1506 stateid.seqid = 0; 1507 encode_nfs4_stateid(xdr, &stateid); 1508 } else 1509 encode_nfs4_stateid(xdr, &zero_stateid); 1510 } 1511 1512 static void encode_read(struct xdr_stream *xdr, const struct nfs_readargs *args, struct compound_hdr *hdr) 1513 { 1514 __be32 *p; 1515 1516 encode_op_hdr(xdr, OP_READ, decode_read_maxsz, hdr); 1517 encode_open_stateid(xdr, args->context, args->lock_context, 1518 FMODE_READ, hdr->minorversion); 1519 1520 p = reserve_space(xdr, 12); 1521 p = xdr_encode_hyper(p, args->offset); 1522 *p = cpu_to_be32(args->count); 1523 } 1524 1525 static void encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg *readdir, struct rpc_rqst *req, struct compound_hdr *hdr) 1526 { 1527 uint32_t attrs[2] = { 1528 FATTR4_WORD0_RDATTR_ERROR, 1529 FATTR4_WORD1_MOUNTED_ON_FILEID, 1530 }; 1531 uint32_t dircount = readdir->count >> 1; 1532 __be32 *p, verf[2]; 1533 1534 if (readdir->plus) { 1535 attrs[0] |= FATTR4_WORD0_TYPE|FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE| 1536 FATTR4_WORD0_FSID|FATTR4_WORD0_FILEHANDLE|FATTR4_WORD0_FILEID; 1537 attrs[1] |= FATTR4_WORD1_MODE|FATTR4_WORD1_NUMLINKS|FATTR4_WORD1_OWNER| 1538 FATTR4_WORD1_OWNER_GROUP|FATTR4_WORD1_RAWDEV| 1539 FATTR4_WORD1_SPACE_USED|FATTR4_WORD1_TIME_ACCESS| 1540 FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY; 1541 dircount >>= 1; 1542 } 1543 /* Use mounted_on_fileid only if the server supports it */ 1544 if (!(readdir->bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)) 1545 attrs[0] |= FATTR4_WORD0_FILEID; 1546 1547 encode_op_hdr(xdr, OP_READDIR, decode_readdir_maxsz, hdr); 1548 encode_uint64(xdr, readdir->cookie); 1549 encode_nfs4_verifier(xdr, &readdir->verifier); 1550 p = reserve_space(xdr, 20); 1551 *p++ = cpu_to_be32(dircount); 1552 *p++ = cpu_to_be32(readdir->count); 1553 *p++ = cpu_to_be32(2); 1554 1555 *p++ = cpu_to_be32(attrs[0] & readdir->bitmask[0]); 1556 *p = cpu_to_be32(attrs[1] & readdir->bitmask[1]); 1557 memcpy(verf, readdir->verifier.data, sizeof(verf)); 1558 dprintk("%s: cookie = %Lu, verifier = %08x:%08x, bitmap = %08x:%08x\n", 1559 __func__, 1560 (unsigned long long)readdir->cookie, 1561 verf[0], verf[1], 1562 attrs[0] & readdir->bitmask[0], 1563 attrs[1] & readdir->bitmask[1]); 1564 } 1565 1566 static void encode_readlink(struct xdr_stream *xdr, const struct nfs4_readlink *readlink, struct rpc_rqst *req, struct compound_hdr *hdr) 1567 { 1568 encode_op_hdr(xdr, OP_READLINK, decode_readlink_maxsz, hdr); 1569 } 1570 1571 static void encode_remove(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr) 1572 { 1573 encode_op_hdr(xdr, OP_REMOVE, decode_remove_maxsz, hdr); 1574 encode_string(xdr, name->len, name->name); 1575 } 1576 1577 static void encode_rename(struct xdr_stream *xdr, const struct qstr *oldname, const struct qstr *newname, struct compound_hdr *hdr) 1578 { 1579 encode_op_hdr(xdr, OP_RENAME, decode_rename_maxsz, hdr); 1580 encode_string(xdr, oldname->len, oldname->name); 1581 encode_string(xdr, newname->len, newname->name); 1582 } 1583 1584 static void encode_renew(struct xdr_stream *xdr, clientid4 clid, 1585 struct compound_hdr *hdr) 1586 { 1587 encode_op_hdr(xdr, OP_RENEW, decode_renew_maxsz, hdr); 1588 encode_uint64(xdr, clid); 1589 } 1590 1591 static void 1592 encode_restorefh(struct xdr_stream *xdr, struct compound_hdr *hdr) 1593 { 1594 encode_op_hdr(xdr, OP_RESTOREFH, decode_restorefh_maxsz, hdr); 1595 } 1596 1597 static void 1598 encode_setacl(struct xdr_stream *xdr, struct nfs_setaclargs *arg, struct compound_hdr *hdr) 1599 { 1600 __be32 *p; 1601 1602 encode_op_hdr(xdr, OP_SETATTR, decode_setacl_maxsz, hdr); 1603 encode_nfs4_stateid(xdr, &zero_stateid); 1604 p = reserve_space(xdr, 2*4); 1605 *p++ = cpu_to_be32(1); 1606 *p = cpu_to_be32(FATTR4_WORD0_ACL); 1607 BUG_ON(arg->acl_len % 4); 1608 p = reserve_space(xdr, 4); 1609 *p = cpu_to_be32(arg->acl_len); 1610 xdr_write_pages(xdr, arg->acl_pages, arg->acl_pgbase, arg->acl_len); 1611 } 1612 1613 static void 1614 encode_savefh(struct xdr_stream *xdr, struct compound_hdr *hdr) 1615 { 1616 encode_op_hdr(xdr, OP_SAVEFH, decode_savefh_maxsz, hdr); 1617 } 1618 1619 static void encode_setattr(struct xdr_stream *xdr, const struct nfs_setattrargs *arg, const struct nfs_server *server, struct compound_hdr *hdr) 1620 { 1621 encode_op_hdr(xdr, OP_SETATTR, decode_setattr_maxsz, hdr); 1622 encode_nfs4_stateid(xdr, &arg->stateid); 1623 encode_attrs(xdr, arg->iap, server); 1624 } 1625 1626 static void encode_setclientid(struct xdr_stream *xdr, const struct nfs4_setclientid *setclientid, struct compound_hdr *hdr) 1627 { 1628 __be32 *p; 1629 1630 encode_op_hdr(xdr, OP_SETCLIENTID, decode_setclientid_maxsz, hdr); 1631 encode_nfs4_verifier(xdr, setclientid->sc_verifier); 1632 1633 encode_string(xdr, setclientid->sc_name_len, setclientid->sc_name); 1634 p = reserve_space(xdr, 4); 1635 *p = cpu_to_be32(setclientid->sc_prog); 1636 encode_string(xdr, setclientid->sc_netid_len, setclientid->sc_netid); 1637 encode_string(xdr, setclientid->sc_uaddr_len, setclientid->sc_uaddr); 1638 p = reserve_space(xdr, 4); 1639 *p = cpu_to_be32(setclientid->sc_cb_ident); 1640 } 1641 1642 static void encode_setclientid_confirm(struct xdr_stream *xdr, const struct nfs4_setclientid_res *arg, struct compound_hdr *hdr) 1643 { 1644 encode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM, 1645 decode_setclientid_confirm_maxsz, hdr); 1646 encode_uint64(xdr, arg->clientid); 1647 encode_nfs4_verifier(xdr, &arg->confirm); 1648 } 1649 1650 static void encode_write(struct xdr_stream *xdr, const struct nfs_writeargs *args, struct compound_hdr *hdr) 1651 { 1652 __be32 *p; 1653 1654 encode_op_hdr(xdr, OP_WRITE, decode_write_maxsz, hdr); 1655 encode_open_stateid(xdr, args->context, args->lock_context, 1656 FMODE_WRITE, hdr->minorversion); 1657 1658 p = reserve_space(xdr, 16); 1659 p = xdr_encode_hyper(p, args->offset); 1660 *p++ = cpu_to_be32(args->stable); 1661 *p = cpu_to_be32(args->count); 1662 1663 xdr_write_pages(xdr, args->pages, args->pgbase, args->count); 1664 } 1665 1666 static void encode_delegreturn(struct xdr_stream *xdr, const nfs4_stateid *stateid, struct compound_hdr *hdr) 1667 { 1668 encode_op_hdr(xdr, OP_DELEGRETURN, decode_delegreturn_maxsz, hdr); 1669 encode_nfs4_stateid(xdr, stateid); 1670 } 1671 1672 static void encode_secinfo(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr) 1673 { 1674 encode_op_hdr(xdr, OP_SECINFO, decode_secinfo_maxsz, hdr); 1675 encode_string(xdr, name->len, name->name); 1676 } 1677 1678 #if defined(CONFIG_NFS_V4_1) 1679 /* NFSv4.1 operations */ 1680 static void encode_exchange_id(struct xdr_stream *xdr, 1681 struct nfs41_exchange_id_args *args, 1682 struct compound_hdr *hdr) 1683 { 1684 __be32 *p; 1685 char impl_name[NFS4_OPAQUE_LIMIT]; 1686 int len = 0; 1687 1688 encode_op_hdr(xdr, OP_EXCHANGE_ID, decode_exchange_id_maxsz, hdr); 1689 encode_nfs4_verifier(xdr, args->verifier); 1690 1691 encode_string(xdr, args->id_len, args->id); 1692 1693 p = reserve_space(xdr, 12); 1694 *p++ = cpu_to_be32(args->flags); 1695 *p++ = cpu_to_be32(0); /* zero length state_protect4_a */ 1696 1697 if (send_implementation_id && 1698 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN) > 1 && 1699 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN) 1700 <= NFS4_OPAQUE_LIMIT + 1) 1701 len = snprintf(impl_name, sizeof(impl_name), "%s %s %s %s", 1702 utsname()->sysname, utsname()->release, 1703 utsname()->version, utsname()->machine); 1704 1705 if (len > 0) { 1706 *p = cpu_to_be32(1); /* implementation id array length=1 */ 1707 1708 encode_string(xdr, 1709 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN) - 1, 1710 CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN); 1711 encode_string(xdr, len, impl_name); 1712 /* just send zeros for nii_date - the date is in nii_name */ 1713 p = reserve_space(xdr, 12); 1714 p = xdr_encode_hyper(p, 0); 1715 *p = cpu_to_be32(0); 1716 } else 1717 *p = cpu_to_be32(0); /* implementation id array length=0 */ 1718 } 1719 1720 static void encode_create_session(struct xdr_stream *xdr, 1721 struct nfs41_create_session_args *args, 1722 struct compound_hdr *hdr) 1723 { 1724 __be32 *p; 1725 char machine_name[NFS4_MAX_MACHINE_NAME_LEN]; 1726 uint32_t len; 1727 struct nfs_client *clp = args->client; 1728 u32 max_resp_sz_cached; 1729 1730 /* 1731 * Assumes OPEN is the biggest non-idempotent compound. 1732 * 2 is the verifier. 1733 */ 1734 max_resp_sz_cached = (NFS4_dec_open_sz + RPC_REPHDRSIZE + 1735 RPC_MAX_AUTH_SIZE + 2) * XDR_UNIT; 1736 1737 len = scnprintf(machine_name, sizeof(machine_name), "%s", 1738 clp->cl_ipaddr); 1739 1740 encode_op_hdr(xdr, OP_CREATE_SESSION, decode_create_session_maxsz, hdr); 1741 p = reserve_space(xdr, 16 + 2*28 + 20 + len + 12); 1742 p = xdr_encode_hyper(p, clp->cl_clientid); 1743 *p++ = cpu_to_be32(clp->cl_seqid); /*Sequence id */ 1744 *p++ = cpu_to_be32(args->flags); /*flags */ 1745 1746 /* Fore Channel */ 1747 *p++ = cpu_to_be32(0); /* header padding size */ 1748 *p++ = cpu_to_be32(args->fc_attrs.max_rqst_sz); /* max req size */ 1749 *p++ = cpu_to_be32(args->fc_attrs.max_resp_sz); /* max resp size */ 1750 *p++ = cpu_to_be32(max_resp_sz_cached); /* Max resp sz cached */ 1751 *p++ = cpu_to_be32(args->fc_attrs.max_ops); /* max operations */ 1752 *p++ = cpu_to_be32(args->fc_attrs.max_reqs); /* max requests */ 1753 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */ 1754 1755 /* Back Channel */ 1756 *p++ = cpu_to_be32(0); /* header padding size */ 1757 *p++ = cpu_to_be32(args->bc_attrs.max_rqst_sz); /* max req size */ 1758 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz); /* max resp size */ 1759 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz_cached); /* Max resp sz cached */ 1760 *p++ = cpu_to_be32(args->bc_attrs.max_ops); /* max operations */ 1761 *p++ = cpu_to_be32(args->bc_attrs.max_reqs); /* max requests */ 1762 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */ 1763 1764 *p++ = cpu_to_be32(args->cb_program); /* cb_program */ 1765 *p++ = cpu_to_be32(1); 1766 *p++ = cpu_to_be32(RPC_AUTH_UNIX); /* auth_sys */ 1767 1768 /* authsys_parms rfc1831 */ 1769 *p++ = cpu_to_be32((u32)clp->cl_boot_time.tv_nsec); /* stamp */ 1770 p = xdr_encode_opaque(p, machine_name, len); 1771 *p++ = cpu_to_be32(0); /* UID */ 1772 *p++ = cpu_to_be32(0); /* GID */ 1773 *p = cpu_to_be32(0); /* No more gids */ 1774 } 1775 1776 static void encode_destroy_session(struct xdr_stream *xdr, 1777 struct nfs4_session *session, 1778 struct compound_hdr *hdr) 1779 { 1780 encode_op_hdr(xdr, OP_DESTROY_SESSION, decode_destroy_session_maxsz, hdr); 1781 encode_opaque_fixed(xdr, session->sess_id.data, NFS4_MAX_SESSIONID_LEN); 1782 } 1783 1784 static void encode_reclaim_complete(struct xdr_stream *xdr, 1785 struct nfs41_reclaim_complete_args *args, 1786 struct compound_hdr *hdr) 1787 { 1788 encode_op_hdr(xdr, OP_RECLAIM_COMPLETE, decode_reclaim_complete_maxsz, hdr); 1789 encode_uint32(xdr, args->one_fs); 1790 } 1791 #endif /* CONFIG_NFS_V4_1 */ 1792 1793 static void encode_sequence(struct xdr_stream *xdr, 1794 const struct nfs4_sequence_args *args, 1795 struct compound_hdr *hdr) 1796 { 1797 #if defined(CONFIG_NFS_V4_1) 1798 struct nfs4_session *session = args->sa_session; 1799 struct nfs4_slot_table *tp; 1800 struct nfs4_slot *slot; 1801 __be32 *p; 1802 1803 if (!session) 1804 return; 1805 1806 tp = &session->fc_slot_table; 1807 1808 WARN_ON(args->sa_slotid == NFS4_MAX_SLOT_TABLE); 1809 slot = tp->slots + args->sa_slotid; 1810 1811 encode_op_hdr(xdr, OP_SEQUENCE, decode_sequence_maxsz, hdr); 1812 1813 /* 1814 * Sessionid + seqid + slotid + max slotid + cache_this 1815 */ 1816 dprintk("%s: sessionid=%u:%u:%u:%u seqid=%d slotid=%d " 1817 "max_slotid=%d cache_this=%d\n", 1818 __func__, 1819 ((u32 *)session->sess_id.data)[0], 1820 ((u32 *)session->sess_id.data)[1], 1821 ((u32 *)session->sess_id.data)[2], 1822 ((u32 *)session->sess_id.data)[3], 1823 slot->seq_nr, args->sa_slotid, 1824 tp->highest_used_slotid, args->sa_cache_this); 1825 p = reserve_space(xdr, NFS4_MAX_SESSIONID_LEN + 16); 1826 p = xdr_encode_opaque_fixed(p, session->sess_id.data, NFS4_MAX_SESSIONID_LEN); 1827 *p++ = cpu_to_be32(slot->seq_nr); 1828 *p++ = cpu_to_be32(args->sa_slotid); 1829 *p++ = cpu_to_be32(tp->highest_used_slotid); 1830 *p = cpu_to_be32(args->sa_cache_this); 1831 #endif /* CONFIG_NFS_V4_1 */ 1832 } 1833 1834 #ifdef CONFIG_NFS_V4_1 1835 static void 1836 encode_getdevicelist(struct xdr_stream *xdr, 1837 const struct nfs4_getdevicelist_args *args, 1838 struct compound_hdr *hdr) 1839 { 1840 __be32 *p; 1841 nfs4_verifier dummy = { 1842 .data = "dummmmmy", 1843 }; 1844 1845 encode_op_hdr(xdr, OP_GETDEVICELIST, decode_getdevicelist_maxsz, hdr); 1846 p = reserve_space(xdr, 16); 1847 *p++ = cpu_to_be32(args->layoutclass); 1848 *p++ = cpu_to_be32(NFS4_PNFS_GETDEVLIST_MAXNUM); 1849 xdr_encode_hyper(p, 0ULL); /* cookie */ 1850 encode_nfs4_verifier(xdr, &dummy); 1851 } 1852 1853 static void 1854 encode_getdeviceinfo(struct xdr_stream *xdr, 1855 const struct nfs4_getdeviceinfo_args *args, 1856 struct compound_hdr *hdr) 1857 { 1858 __be32 *p; 1859 1860 encode_op_hdr(xdr, OP_GETDEVICEINFO, decode_getdeviceinfo_maxsz, hdr); 1861 p = reserve_space(xdr, 12 + NFS4_DEVICEID4_SIZE); 1862 p = xdr_encode_opaque_fixed(p, args->pdev->dev_id.data, 1863 NFS4_DEVICEID4_SIZE); 1864 *p++ = cpu_to_be32(args->pdev->layout_type); 1865 *p++ = cpu_to_be32(args->pdev->pglen); /* gdia_maxcount */ 1866 *p++ = cpu_to_be32(0); /* bitmap length 0 */ 1867 } 1868 1869 static void 1870 encode_layoutget(struct xdr_stream *xdr, 1871 const struct nfs4_layoutget_args *args, 1872 struct compound_hdr *hdr) 1873 { 1874 __be32 *p; 1875 1876 encode_op_hdr(xdr, OP_LAYOUTGET, decode_layoutget_maxsz, hdr); 1877 p = reserve_space(xdr, 36); 1878 *p++ = cpu_to_be32(0); /* Signal layout available */ 1879 *p++ = cpu_to_be32(args->type); 1880 *p++ = cpu_to_be32(args->range.iomode); 1881 p = xdr_encode_hyper(p, args->range.offset); 1882 p = xdr_encode_hyper(p, args->range.length); 1883 p = xdr_encode_hyper(p, args->minlength); 1884 encode_nfs4_stateid(xdr, &args->stateid); 1885 encode_uint32(xdr, args->maxcount); 1886 1887 dprintk("%s: 1st type:0x%x iomode:%d off:%lu len:%lu mc:%d\n", 1888 __func__, 1889 args->type, 1890 args->range.iomode, 1891 (unsigned long)args->range.offset, 1892 (unsigned long)args->range.length, 1893 args->maxcount); 1894 } 1895 1896 static int 1897 encode_layoutcommit(struct xdr_stream *xdr, 1898 struct inode *inode, 1899 const struct nfs4_layoutcommit_args *args, 1900 struct compound_hdr *hdr) 1901 { 1902 __be32 *p; 1903 1904 dprintk("%s: lbw: %llu type: %d\n", __func__, args->lastbytewritten, 1905 NFS_SERVER(args->inode)->pnfs_curr_ld->id); 1906 1907 encode_op_hdr(xdr, OP_LAYOUTCOMMIT, decode_layoutcommit_maxsz, hdr); 1908 p = reserve_space(xdr, 20); 1909 /* Only whole file layouts */ 1910 p = xdr_encode_hyper(p, 0); /* offset */ 1911 p = xdr_encode_hyper(p, args->lastbytewritten + 1); /* length */ 1912 *p = cpu_to_be32(0); /* reclaim */ 1913 encode_nfs4_stateid(xdr, &args->stateid); 1914 p = reserve_space(xdr, 20); 1915 *p++ = cpu_to_be32(1); /* newoffset = TRUE */ 1916 p = xdr_encode_hyper(p, args->lastbytewritten); 1917 *p++ = cpu_to_be32(0); /* Never send time_modify_changed */ 1918 *p++ = cpu_to_be32(NFS_SERVER(args->inode)->pnfs_curr_ld->id);/* type */ 1919 1920 if (NFS_SERVER(inode)->pnfs_curr_ld->encode_layoutcommit) 1921 NFS_SERVER(inode)->pnfs_curr_ld->encode_layoutcommit( 1922 NFS_I(inode)->layout, xdr, args); 1923 else 1924 encode_uint32(xdr, 0); /* no layout-type payload */ 1925 1926 return 0; 1927 } 1928 1929 static void 1930 encode_layoutreturn(struct xdr_stream *xdr, 1931 const struct nfs4_layoutreturn_args *args, 1932 struct compound_hdr *hdr) 1933 { 1934 __be32 *p; 1935 1936 encode_op_hdr(xdr, OP_LAYOUTRETURN, decode_layoutreturn_maxsz, hdr); 1937 p = reserve_space(xdr, 16); 1938 *p++ = cpu_to_be32(0); /* reclaim. always 0 for now */ 1939 *p++ = cpu_to_be32(args->layout_type); 1940 *p++ = cpu_to_be32(IOMODE_ANY); 1941 *p = cpu_to_be32(RETURN_FILE); 1942 p = reserve_space(xdr, 16); 1943 p = xdr_encode_hyper(p, 0); 1944 p = xdr_encode_hyper(p, NFS4_MAX_UINT64); 1945 spin_lock(&args->inode->i_lock); 1946 encode_nfs4_stateid(xdr, &args->stateid); 1947 spin_unlock(&args->inode->i_lock); 1948 if (NFS_SERVER(args->inode)->pnfs_curr_ld->encode_layoutreturn) { 1949 NFS_SERVER(args->inode)->pnfs_curr_ld->encode_layoutreturn( 1950 NFS_I(args->inode)->layout, xdr, args); 1951 } else 1952 encode_uint32(xdr, 0); 1953 } 1954 1955 static int 1956 encode_secinfo_no_name(struct xdr_stream *xdr, 1957 const struct nfs41_secinfo_no_name_args *args, 1958 struct compound_hdr *hdr) 1959 { 1960 encode_op_hdr(xdr, OP_SECINFO_NO_NAME, decode_secinfo_no_name_maxsz, hdr); 1961 encode_uint32(xdr, args->style); 1962 return 0; 1963 } 1964 1965 static void encode_test_stateid(struct xdr_stream *xdr, 1966 struct nfs41_test_stateid_args *args, 1967 struct compound_hdr *hdr) 1968 { 1969 encode_op_hdr(xdr, OP_TEST_STATEID, decode_test_stateid_maxsz, hdr); 1970 encode_uint32(xdr, 1); 1971 encode_nfs4_stateid(xdr, args->stateid); 1972 } 1973 1974 static void encode_free_stateid(struct xdr_stream *xdr, 1975 struct nfs41_free_stateid_args *args, 1976 struct compound_hdr *hdr) 1977 { 1978 encode_op_hdr(xdr, OP_FREE_STATEID, decode_free_stateid_maxsz, hdr); 1979 encode_nfs4_stateid(xdr, args->stateid); 1980 } 1981 #endif /* CONFIG_NFS_V4_1 */ 1982 1983 /* 1984 * END OF "GENERIC" ENCODE ROUTINES. 1985 */ 1986 1987 static u32 nfs4_xdr_minorversion(const struct nfs4_sequence_args *args) 1988 { 1989 #if defined(CONFIG_NFS_V4_1) 1990 if (args->sa_session) 1991 return args->sa_session->clp->cl_mvops->minor_version; 1992 #endif /* CONFIG_NFS_V4_1 */ 1993 return 0; 1994 } 1995 1996 /* 1997 * Encode an ACCESS request 1998 */ 1999 static void nfs4_xdr_enc_access(struct rpc_rqst *req, struct xdr_stream *xdr, 2000 const struct nfs4_accessargs *args) 2001 { 2002 struct compound_hdr hdr = { 2003 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2004 }; 2005 2006 encode_compound_hdr(xdr, req, &hdr); 2007 encode_sequence(xdr, &args->seq_args, &hdr); 2008 encode_putfh(xdr, args->fh, &hdr); 2009 encode_access(xdr, args->access, &hdr); 2010 encode_getfattr(xdr, args->bitmask, &hdr); 2011 encode_nops(&hdr); 2012 } 2013 2014 /* 2015 * Encode LOOKUP request 2016 */ 2017 static void nfs4_xdr_enc_lookup(struct rpc_rqst *req, struct xdr_stream *xdr, 2018 const struct nfs4_lookup_arg *args) 2019 { 2020 struct compound_hdr hdr = { 2021 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2022 }; 2023 2024 encode_compound_hdr(xdr, req, &hdr); 2025 encode_sequence(xdr, &args->seq_args, &hdr); 2026 encode_putfh(xdr, args->dir_fh, &hdr); 2027 encode_lookup(xdr, args->name, &hdr); 2028 encode_getfh(xdr, &hdr); 2029 encode_getfattr(xdr, args->bitmask, &hdr); 2030 encode_nops(&hdr); 2031 } 2032 2033 /* 2034 * Encode LOOKUP_ROOT request 2035 */ 2036 static void nfs4_xdr_enc_lookup_root(struct rpc_rqst *req, 2037 struct xdr_stream *xdr, 2038 const struct nfs4_lookup_root_arg *args) 2039 { 2040 struct compound_hdr hdr = { 2041 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2042 }; 2043 2044 encode_compound_hdr(xdr, req, &hdr); 2045 encode_sequence(xdr, &args->seq_args, &hdr); 2046 encode_putrootfh(xdr, &hdr); 2047 encode_getfh(xdr, &hdr); 2048 encode_getfattr(xdr, args->bitmask, &hdr); 2049 encode_nops(&hdr); 2050 } 2051 2052 /* 2053 * Encode REMOVE request 2054 */ 2055 static void nfs4_xdr_enc_remove(struct rpc_rqst *req, struct xdr_stream *xdr, 2056 const struct nfs_removeargs *args) 2057 { 2058 struct compound_hdr hdr = { 2059 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2060 }; 2061 2062 encode_compound_hdr(xdr, req, &hdr); 2063 encode_sequence(xdr, &args->seq_args, &hdr); 2064 encode_putfh(xdr, args->fh, &hdr); 2065 encode_remove(xdr, &args->name, &hdr); 2066 encode_getfattr(xdr, args->bitmask, &hdr); 2067 encode_nops(&hdr); 2068 } 2069 2070 /* 2071 * Encode RENAME request 2072 */ 2073 static void nfs4_xdr_enc_rename(struct rpc_rqst *req, struct xdr_stream *xdr, 2074 const struct nfs_renameargs *args) 2075 { 2076 struct compound_hdr hdr = { 2077 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2078 }; 2079 2080 encode_compound_hdr(xdr, req, &hdr); 2081 encode_sequence(xdr, &args->seq_args, &hdr); 2082 encode_putfh(xdr, args->old_dir, &hdr); 2083 encode_savefh(xdr, &hdr); 2084 encode_putfh(xdr, args->new_dir, &hdr); 2085 encode_rename(xdr, args->old_name, args->new_name, &hdr); 2086 encode_getfattr(xdr, args->bitmask, &hdr); 2087 encode_restorefh(xdr, &hdr); 2088 encode_getfattr(xdr, args->bitmask, &hdr); 2089 encode_nops(&hdr); 2090 } 2091 2092 /* 2093 * Encode LINK request 2094 */ 2095 static void nfs4_xdr_enc_link(struct rpc_rqst *req, struct xdr_stream *xdr, 2096 const struct nfs4_link_arg *args) 2097 { 2098 struct compound_hdr hdr = { 2099 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2100 }; 2101 2102 encode_compound_hdr(xdr, req, &hdr); 2103 encode_sequence(xdr, &args->seq_args, &hdr); 2104 encode_putfh(xdr, args->fh, &hdr); 2105 encode_savefh(xdr, &hdr); 2106 encode_putfh(xdr, args->dir_fh, &hdr); 2107 encode_link(xdr, args->name, &hdr); 2108 encode_getfattr(xdr, args->bitmask, &hdr); 2109 encode_restorefh(xdr, &hdr); 2110 encode_getfattr(xdr, args->bitmask, &hdr); 2111 encode_nops(&hdr); 2112 } 2113 2114 /* 2115 * Encode CREATE request 2116 */ 2117 static void nfs4_xdr_enc_create(struct rpc_rqst *req, struct xdr_stream *xdr, 2118 const struct nfs4_create_arg *args) 2119 { 2120 struct compound_hdr hdr = { 2121 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2122 }; 2123 2124 encode_compound_hdr(xdr, req, &hdr); 2125 encode_sequence(xdr, &args->seq_args, &hdr); 2126 encode_putfh(xdr, args->dir_fh, &hdr); 2127 encode_savefh(xdr, &hdr); 2128 encode_create(xdr, args, &hdr); 2129 encode_getfh(xdr, &hdr); 2130 encode_getfattr(xdr, args->bitmask, &hdr); 2131 encode_restorefh(xdr, &hdr); 2132 encode_getfattr(xdr, args->bitmask, &hdr); 2133 encode_nops(&hdr); 2134 } 2135 2136 /* 2137 * Encode SYMLINK request 2138 */ 2139 static void nfs4_xdr_enc_symlink(struct rpc_rqst *req, struct xdr_stream *xdr, 2140 const struct nfs4_create_arg *args) 2141 { 2142 nfs4_xdr_enc_create(req, xdr, args); 2143 } 2144 2145 /* 2146 * Encode GETATTR request 2147 */ 2148 static void nfs4_xdr_enc_getattr(struct rpc_rqst *req, struct xdr_stream *xdr, 2149 const struct nfs4_getattr_arg *args) 2150 { 2151 struct compound_hdr hdr = { 2152 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2153 }; 2154 2155 encode_compound_hdr(xdr, req, &hdr); 2156 encode_sequence(xdr, &args->seq_args, &hdr); 2157 encode_putfh(xdr, args->fh, &hdr); 2158 encode_getfattr(xdr, args->bitmask, &hdr); 2159 encode_nops(&hdr); 2160 } 2161 2162 /* 2163 * Encode a CLOSE request 2164 */ 2165 static void nfs4_xdr_enc_close(struct rpc_rqst *req, struct xdr_stream *xdr, 2166 struct nfs_closeargs *args) 2167 { 2168 struct compound_hdr hdr = { 2169 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2170 }; 2171 2172 encode_compound_hdr(xdr, req, &hdr); 2173 encode_sequence(xdr, &args->seq_args, &hdr); 2174 encode_putfh(xdr, args->fh, &hdr); 2175 encode_close(xdr, args, &hdr); 2176 encode_getfattr(xdr, args->bitmask, &hdr); 2177 encode_nops(&hdr); 2178 } 2179 2180 /* 2181 * Encode an OPEN request 2182 */ 2183 static void nfs4_xdr_enc_open(struct rpc_rqst *req, struct xdr_stream *xdr, 2184 struct nfs_openargs *args) 2185 { 2186 struct compound_hdr hdr = { 2187 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2188 }; 2189 2190 encode_compound_hdr(xdr, req, &hdr); 2191 encode_sequence(xdr, &args->seq_args, &hdr); 2192 encode_putfh(xdr, args->fh, &hdr); 2193 encode_savefh(xdr, &hdr); 2194 encode_open(xdr, args, &hdr); 2195 encode_getfh(xdr, &hdr); 2196 encode_getfattr(xdr, args->bitmask, &hdr); 2197 encode_restorefh(xdr, &hdr); 2198 encode_getfattr(xdr, args->dir_bitmask, &hdr); 2199 encode_nops(&hdr); 2200 } 2201 2202 /* 2203 * Encode an OPEN_CONFIRM request 2204 */ 2205 static void nfs4_xdr_enc_open_confirm(struct rpc_rqst *req, 2206 struct xdr_stream *xdr, 2207 struct nfs_open_confirmargs *args) 2208 { 2209 struct compound_hdr hdr = { 2210 .nops = 0, 2211 }; 2212 2213 encode_compound_hdr(xdr, req, &hdr); 2214 encode_putfh(xdr, args->fh, &hdr); 2215 encode_open_confirm(xdr, args, &hdr); 2216 encode_nops(&hdr); 2217 } 2218 2219 /* 2220 * Encode an OPEN request with no attributes. 2221 */ 2222 static void nfs4_xdr_enc_open_noattr(struct rpc_rqst *req, 2223 struct xdr_stream *xdr, 2224 struct nfs_openargs *args) 2225 { 2226 struct compound_hdr hdr = { 2227 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2228 }; 2229 2230 encode_compound_hdr(xdr, req, &hdr); 2231 encode_sequence(xdr, &args->seq_args, &hdr); 2232 encode_putfh(xdr, args->fh, &hdr); 2233 encode_open(xdr, args, &hdr); 2234 encode_getfattr(xdr, args->bitmask, &hdr); 2235 encode_nops(&hdr); 2236 } 2237 2238 /* 2239 * Encode an OPEN_DOWNGRADE request 2240 */ 2241 static void nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req, 2242 struct xdr_stream *xdr, 2243 struct nfs_closeargs *args) 2244 { 2245 struct compound_hdr hdr = { 2246 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2247 }; 2248 2249 encode_compound_hdr(xdr, req, &hdr); 2250 encode_sequence(xdr, &args->seq_args, &hdr); 2251 encode_putfh(xdr, args->fh, &hdr); 2252 encode_open_downgrade(xdr, args, &hdr); 2253 encode_getfattr(xdr, args->bitmask, &hdr); 2254 encode_nops(&hdr); 2255 } 2256 2257 /* 2258 * Encode a LOCK request 2259 */ 2260 static void nfs4_xdr_enc_lock(struct rpc_rqst *req, struct xdr_stream *xdr, 2261 struct nfs_lock_args *args) 2262 { 2263 struct compound_hdr hdr = { 2264 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2265 }; 2266 2267 encode_compound_hdr(xdr, req, &hdr); 2268 encode_sequence(xdr, &args->seq_args, &hdr); 2269 encode_putfh(xdr, args->fh, &hdr); 2270 encode_lock(xdr, args, &hdr); 2271 encode_nops(&hdr); 2272 } 2273 2274 /* 2275 * Encode a LOCKT request 2276 */ 2277 static void nfs4_xdr_enc_lockt(struct rpc_rqst *req, struct xdr_stream *xdr, 2278 struct nfs_lockt_args *args) 2279 { 2280 struct compound_hdr hdr = { 2281 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2282 }; 2283 2284 encode_compound_hdr(xdr, req, &hdr); 2285 encode_sequence(xdr, &args->seq_args, &hdr); 2286 encode_putfh(xdr, args->fh, &hdr); 2287 encode_lockt(xdr, args, &hdr); 2288 encode_nops(&hdr); 2289 } 2290 2291 /* 2292 * Encode a LOCKU request 2293 */ 2294 static void nfs4_xdr_enc_locku(struct rpc_rqst *req, struct xdr_stream *xdr, 2295 struct nfs_locku_args *args) 2296 { 2297 struct compound_hdr hdr = { 2298 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2299 }; 2300 2301 encode_compound_hdr(xdr, req, &hdr); 2302 encode_sequence(xdr, &args->seq_args, &hdr); 2303 encode_putfh(xdr, args->fh, &hdr); 2304 encode_locku(xdr, args, &hdr); 2305 encode_nops(&hdr); 2306 } 2307 2308 static void nfs4_xdr_enc_release_lockowner(struct rpc_rqst *req, 2309 struct xdr_stream *xdr, 2310 struct nfs_release_lockowner_args *args) 2311 { 2312 struct compound_hdr hdr = { 2313 .minorversion = 0, 2314 }; 2315 2316 encode_compound_hdr(xdr, req, &hdr); 2317 encode_release_lockowner(xdr, &args->lock_owner, &hdr); 2318 encode_nops(&hdr); 2319 } 2320 2321 /* 2322 * Encode a READLINK request 2323 */ 2324 static void nfs4_xdr_enc_readlink(struct rpc_rqst *req, struct xdr_stream *xdr, 2325 const struct nfs4_readlink *args) 2326 { 2327 struct compound_hdr hdr = { 2328 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2329 }; 2330 2331 encode_compound_hdr(xdr, req, &hdr); 2332 encode_sequence(xdr, &args->seq_args, &hdr); 2333 encode_putfh(xdr, args->fh, &hdr); 2334 encode_readlink(xdr, args, req, &hdr); 2335 2336 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages, 2337 args->pgbase, args->pglen); 2338 encode_nops(&hdr); 2339 } 2340 2341 /* 2342 * Encode a READDIR request 2343 */ 2344 static void nfs4_xdr_enc_readdir(struct rpc_rqst *req, struct xdr_stream *xdr, 2345 const struct nfs4_readdir_arg *args) 2346 { 2347 struct compound_hdr hdr = { 2348 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2349 }; 2350 2351 encode_compound_hdr(xdr, req, &hdr); 2352 encode_sequence(xdr, &args->seq_args, &hdr); 2353 encode_putfh(xdr, args->fh, &hdr); 2354 encode_readdir(xdr, args, req, &hdr); 2355 2356 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages, 2357 args->pgbase, args->count); 2358 dprintk("%s: inlined page args = (%u, %p, %u, %u)\n", 2359 __func__, hdr.replen << 2, args->pages, 2360 args->pgbase, args->count); 2361 encode_nops(&hdr); 2362 } 2363 2364 /* 2365 * Encode a READ request 2366 */ 2367 static void nfs4_xdr_enc_read(struct rpc_rqst *req, struct xdr_stream *xdr, 2368 struct nfs_readargs *args) 2369 { 2370 struct compound_hdr hdr = { 2371 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2372 }; 2373 2374 encode_compound_hdr(xdr, req, &hdr); 2375 encode_sequence(xdr, &args->seq_args, &hdr); 2376 encode_putfh(xdr, args->fh, &hdr); 2377 encode_read(xdr, args, &hdr); 2378 2379 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, 2380 args->pages, args->pgbase, args->count); 2381 req->rq_rcv_buf.flags |= XDRBUF_READ; 2382 encode_nops(&hdr); 2383 } 2384 2385 /* 2386 * Encode an SETATTR request 2387 */ 2388 static void nfs4_xdr_enc_setattr(struct rpc_rqst *req, struct xdr_stream *xdr, 2389 struct nfs_setattrargs *args) 2390 { 2391 struct compound_hdr hdr = { 2392 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2393 }; 2394 2395 encode_compound_hdr(xdr, req, &hdr); 2396 encode_sequence(xdr, &args->seq_args, &hdr); 2397 encode_putfh(xdr, args->fh, &hdr); 2398 encode_setattr(xdr, args, args->server, &hdr); 2399 encode_getfattr(xdr, args->bitmask, &hdr); 2400 encode_nops(&hdr); 2401 } 2402 2403 /* 2404 * Encode a GETACL request 2405 */ 2406 static void nfs4_xdr_enc_getacl(struct rpc_rqst *req, struct xdr_stream *xdr, 2407 struct nfs_getaclargs *args) 2408 { 2409 struct compound_hdr hdr = { 2410 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2411 }; 2412 uint32_t replen; 2413 2414 encode_compound_hdr(xdr, req, &hdr); 2415 encode_sequence(xdr, &args->seq_args, &hdr); 2416 encode_putfh(xdr, args->fh, &hdr); 2417 replen = hdr.replen + op_decode_hdr_maxsz + 1; 2418 encode_getattr_two(xdr, FATTR4_WORD0_ACL, 0, &hdr); 2419 2420 xdr_inline_pages(&req->rq_rcv_buf, replen << 2, 2421 args->acl_pages, args->acl_pgbase, args->acl_len); 2422 2423 encode_nops(&hdr); 2424 } 2425 2426 /* 2427 * Encode a WRITE request 2428 */ 2429 static void nfs4_xdr_enc_write(struct rpc_rqst *req, struct xdr_stream *xdr, 2430 struct nfs_writeargs *args) 2431 { 2432 struct compound_hdr hdr = { 2433 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2434 }; 2435 2436 encode_compound_hdr(xdr, req, &hdr); 2437 encode_sequence(xdr, &args->seq_args, &hdr); 2438 encode_putfh(xdr, args->fh, &hdr); 2439 encode_write(xdr, args, &hdr); 2440 req->rq_snd_buf.flags |= XDRBUF_WRITE; 2441 if (args->bitmask) 2442 encode_getfattr(xdr, args->bitmask, &hdr); 2443 encode_nops(&hdr); 2444 } 2445 2446 /* 2447 * a COMMIT request 2448 */ 2449 static void nfs4_xdr_enc_commit(struct rpc_rqst *req, struct xdr_stream *xdr, 2450 struct nfs_writeargs *args) 2451 { 2452 struct compound_hdr hdr = { 2453 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2454 }; 2455 2456 encode_compound_hdr(xdr, req, &hdr); 2457 encode_sequence(xdr, &args->seq_args, &hdr); 2458 encode_putfh(xdr, args->fh, &hdr); 2459 encode_commit(xdr, args, &hdr); 2460 if (args->bitmask) 2461 encode_getfattr(xdr, args->bitmask, &hdr); 2462 encode_nops(&hdr); 2463 } 2464 2465 /* 2466 * FSINFO request 2467 */ 2468 static void nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr, 2469 struct nfs4_fsinfo_arg *args) 2470 { 2471 struct compound_hdr hdr = { 2472 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2473 }; 2474 2475 encode_compound_hdr(xdr, req, &hdr); 2476 encode_sequence(xdr, &args->seq_args, &hdr); 2477 encode_putfh(xdr, args->fh, &hdr); 2478 encode_fsinfo(xdr, args->bitmask, &hdr); 2479 encode_nops(&hdr); 2480 } 2481 2482 /* 2483 * a PATHCONF request 2484 */ 2485 static void nfs4_xdr_enc_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr, 2486 const struct nfs4_pathconf_arg *args) 2487 { 2488 struct compound_hdr hdr = { 2489 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2490 }; 2491 2492 encode_compound_hdr(xdr, req, &hdr); 2493 encode_sequence(xdr, &args->seq_args, &hdr); 2494 encode_putfh(xdr, args->fh, &hdr); 2495 encode_getattr_one(xdr, args->bitmask[0] & nfs4_pathconf_bitmap[0], 2496 &hdr); 2497 encode_nops(&hdr); 2498 } 2499 2500 /* 2501 * a STATFS request 2502 */ 2503 static void nfs4_xdr_enc_statfs(struct rpc_rqst *req, struct xdr_stream *xdr, 2504 const struct nfs4_statfs_arg *args) 2505 { 2506 struct compound_hdr hdr = { 2507 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2508 }; 2509 2510 encode_compound_hdr(xdr, req, &hdr); 2511 encode_sequence(xdr, &args->seq_args, &hdr); 2512 encode_putfh(xdr, args->fh, &hdr); 2513 encode_getattr_two(xdr, args->bitmask[0] & nfs4_statfs_bitmap[0], 2514 args->bitmask[1] & nfs4_statfs_bitmap[1], &hdr); 2515 encode_nops(&hdr); 2516 } 2517 2518 /* 2519 * GETATTR_BITMAP request 2520 */ 2521 static void nfs4_xdr_enc_server_caps(struct rpc_rqst *req, 2522 struct xdr_stream *xdr, 2523 struct nfs4_server_caps_arg *args) 2524 { 2525 struct compound_hdr hdr = { 2526 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2527 }; 2528 2529 encode_compound_hdr(xdr, req, &hdr); 2530 encode_sequence(xdr, &args->seq_args, &hdr); 2531 encode_putfh(xdr, args->fhandle, &hdr); 2532 encode_getattr_one(xdr, FATTR4_WORD0_SUPPORTED_ATTRS| 2533 FATTR4_WORD0_FH_EXPIRE_TYPE| 2534 FATTR4_WORD0_LINK_SUPPORT| 2535 FATTR4_WORD0_SYMLINK_SUPPORT| 2536 FATTR4_WORD0_ACLSUPPORT, &hdr); 2537 encode_nops(&hdr); 2538 } 2539 2540 /* 2541 * a RENEW request 2542 */ 2543 static void nfs4_xdr_enc_renew(struct rpc_rqst *req, struct xdr_stream *xdr, 2544 struct nfs_client *clp) 2545 { 2546 struct compound_hdr hdr = { 2547 .nops = 0, 2548 }; 2549 2550 encode_compound_hdr(xdr, req, &hdr); 2551 encode_renew(xdr, clp->cl_clientid, &hdr); 2552 encode_nops(&hdr); 2553 } 2554 2555 /* 2556 * a SETCLIENTID request 2557 */ 2558 static void nfs4_xdr_enc_setclientid(struct rpc_rqst *req, 2559 struct xdr_stream *xdr, 2560 struct nfs4_setclientid *sc) 2561 { 2562 struct compound_hdr hdr = { 2563 .nops = 0, 2564 }; 2565 2566 encode_compound_hdr(xdr, req, &hdr); 2567 encode_setclientid(xdr, sc, &hdr); 2568 encode_nops(&hdr); 2569 } 2570 2571 /* 2572 * a SETCLIENTID_CONFIRM request 2573 */ 2574 static void nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req, 2575 struct xdr_stream *xdr, 2576 struct nfs4_setclientid_res *arg) 2577 { 2578 struct compound_hdr hdr = { 2579 .nops = 0, 2580 }; 2581 const u32 lease_bitmap[3] = { FATTR4_WORD0_LEASE_TIME }; 2582 2583 encode_compound_hdr(xdr, req, &hdr); 2584 encode_setclientid_confirm(xdr, arg, &hdr); 2585 encode_putrootfh(xdr, &hdr); 2586 encode_fsinfo(xdr, lease_bitmap, &hdr); 2587 encode_nops(&hdr); 2588 } 2589 2590 /* 2591 * DELEGRETURN request 2592 */ 2593 static void nfs4_xdr_enc_delegreturn(struct rpc_rqst *req, 2594 struct xdr_stream *xdr, 2595 const struct nfs4_delegreturnargs *args) 2596 { 2597 struct compound_hdr hdr = { 2598 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2599 }; 2600 2601 encode_compound_hdr(xdr, req, &hdr); 2602 encode_sequence(xdr, &args->seq_args, &hdr); 2603 encode_putfh(xdr, args->fhandle, &hdr); 2604 encode_delegreturn(xdr, args->stateid, &hdr); 2605 encode_getfattr(xdr, args->bitmask, &hdr); 2606 encode_nops(&hdr); 2607 } 2608 2609 /* 2610 * Encode FS_LOCATIONS request 2611 */ 2612 static void nfs4_xdr_enc_fs_locations(struct rpc_rqst *req, 2613 struct xdr_stream *xdr, 2614 struct nfs4_fs_locations_arg *args) 2615 { 2616 struct compound_hdr hdr = { 2617 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2618 }; 2619 uint32_t replen; 2620 2621 encode_compound_hdr(xdr, req, &hdr); 2622 encode_sequence(xdr, &args->seq_args, &hdr); 2623 encode_putfh(xdr, args->dir_fh, &hdr); 2624 encode_lookup(xdr, args->name, &hdr); 2625 replen = hdr.replen; /* get the attribute into args->page */ 2626 encode_fs_locations(xdr, args->bitmask, &hdr); 2627 2628 xdr_inline_pages(&req->rq_rcv_buf, replen << 2, &args->page, 2629 0, PAGE_SIZE); 2630 encode_nops(&hdr); 2631 } 2632 2633 /* 2634 * Encode SECINFO request 2635 */ 2636 static void nfs4_xdr_enc_secinfo(struct rpc_rqst *req, 2637 struct xdr_stream *xdr, 2638 struct nfs4_secinfo_arg *args) 2639 { 2640 struct compound_hdr hdr = { 2641 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2642 }; 2643 2644 encode_compound_hdr(xdr, req, &hdr); 2645 encode_sequence(xdr, &args->seq_args, &hdr); 2646 encode_putfh(xdr, args->dir_fh, &hdr); 2647 encode_secinfo(xdr, args->name, &hdr); 2648 encode_nops(&hdr); 2649 } 2650 2651 #if defined(CONFIG_NFS_V4_1) 2652 /* 2653 * EXCHANGE_ID request 2654 */ 2655 static void nfs4_xdr_enc_exchange_id(struct rpc_rqst *req, 2656 struct xdr_stream *xdr, 2657 struct nfs41_exchange_id_args *args) 2658 { 2659 struct compound_hdr hdr = { 2660 .minorversion = args->client->cl_mvops->minor_version, 2661 }; 2662 2663 encode_compound_hdr(xdr, req, &hdr); 2664 encode_exchange_id(xdr, args, &hdr); 2665 encode_nops(&hdr); 2666 } 2667 2668 /* 2669 * a CREATE_SESSION request 2670 */ 2671 static void nfs4_xdr_enc_create_session(struct rpc_rqst *req, 2672 struct xdr_stream *xdr, 2673 struct nfs41_create_session_args *args) 2674 { 2675 struct compound_hdr hdr = { 2676 .minorversion = args->client->cl_mvops->minor_version, 2677 }; 2678 2679 encode_compound_hdr(xdr, req, &hdr); 2680 encode_create_session(xdr, args, &hdr); 2681 encode_nops(&hdr); 2682 } 2683 2684 /* 2685 * a DESTROY_SESSION request 2686 */ 2687 static void nfs4_xdr_enc_destroy_session(struct rpc_rqst *req, 2688 struct xdr_stream *xdr, 2689 struct nfs4_session *session) 2690 { 2691 struct compound_hdr hdr = { 2692 .minorversion = session->clp->cl_mvops->minor_version, 2693 }; 2694 2695 encode_compound_hdr(xdr, req, &hdr); 2696 encode_destroy_session(xdr, session, &hdr); 2697 encode_nops(&hdr); 2698 } 2699 2700 /* 2701 * a SEQUENCE request 2702 */ 2703 static void nfs4_xdr_enc_sequence(struct rpc_rqst *req, struct xdr_stream *xdr, 2704 struct nfs4_sequence_args *args) 2705 { 2706 struct compound_hdr hdr = { 2707 .minorversion = nfs4_xdr_minorversion(args), 2708 }; 2709 2710 encode_compound_hdr(xdr, req, &hdr); 2711 encode_sequence(xdr, args, &hdr); 2712 encode_nops(&hdr); 2713 } 2714 2715 /* 2716 * a GET_LEASE_TIME request 2717 */ 2718 static void nfs4_xdr_enc_get_lease_time(struct rpc_rqst *req, 2719 struct xdr_stream *xdr, 2720 struct nfs4_get_lease_time_args *args) 2721 { 2722 struct compound_hdr hdr = { 2723 .minorversion = nfs4_xdr_minorversion(&args->la_seq_args), 2724 }; 2725 const u32 lease_bitmap[3] = { FATTR4_WORD0_LEASE_TIME }; 2726 2727 encode_compound_hdr(xdr, req, &hdr); 2728 encode_sequence(xdr, &args->la_seq_args, &hdr); 2729 encode_putrootfh(xdr, &hdr); 2730 encode_fsinfo(xdr, lease_bitmap, &hdr); 2731 encode_nops(&hdr); 2732 } 2733 2734 /* 2735 * a RECLAIM_COMPLETE request 2736 */ 2737 static void nfs4_xdr_enc_reclaim_complete(struct rpc_rqst *req, 2738 struct xdr_stream *xdr, 2739 struct nfs41_reclaim_complete_args *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_reclaim_complete(xdr, args, &hdr); 2748 encode_nops(&hdr); 2749 } 2750 2751 /* 2752 * Encode GETDEVICELIST request 2753 */ 2754 static void nfs4_xdr_enc_getdevicelist(struct rpc_rqst *req, 2755 struct xdr_stream *xdr, 2756 struct nfs4_getdevicelist_args *args) 2757 { 2758 struct compound_hdr hdr = { 2759 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2760 }; 2761 2762 encode_compound_hdr(xdr, req, &hdr); 2763 encode_sequence(xdr, &args->seq_args, &hdr); 2764 encode_putfh(xdr, args->fh, &hdr); 2765 encode_getdevicelist(xdr, args, &hdr); 2766 encode_nops(&hdr); 2767 } 2768 2769 /* 2770 * Encode GETDEVICEINFO request 2771 */ 2772 static void nfs4_xdr_enc_getdeviceinfo(struct rpc_rqst *req, 2773 struct xdr_stream *xdr, 2774 struct nfs4_getdeviceinfo_args *args) 2775 { 2776 struct compound_hdr hdr = { 2777 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2778 }; 2779 2780 encode_compound_hdr(xdr, req, &hdr); 2781 encode_sequence(xdr, &args->seq_args, &hdr); 2782 encode_getdeviceinfo(xdr, args, &hdr); 2783 2784 /* set up reply kvec. Subtract notification bitmap max size (2) 2785 * so that notification bitmap is put in xdr_buf tail */ 2786 xdr_inline_pages(&req->rq_rcv_buf, (hdr.replen - 2) << 2, 2787 args->pdev->pages, args->pdev->pgbase, 2788 args->pdev->pglen); 2789 2790 encode_nops(&hdr); 2791 } 2792 2793 /* 2794 * Encode LAYOUTGET request 2795 */ 2796 static void nfs4_xdr_enc_layoutget(struct rpc_rqst *req, 2797 struct xdr_stream *xdr, 2798 struct nfs4_layoutget_args *args) 2799 { 2800 struct compound_hdr hdr = { 2801 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2802 }; 2803 2804 encode_compound_hdr(xdr, req, &hdr); 2805 encode_sequence(xdr, &args->seq_args, &hdr); 2806 encode_putfh(xdr, NFS_FH(args->inode), &hdr); 2807 encode_layoutget(xdr, args, &hdr); 2808 2809 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, 2810 args->layout.pages, 0, args->layout.pglen); 2811 2812 encode_nops(&hdr); 2813 } 2814 2815 /* 2816 * Encode LAYOUTCOMMIT request 2817 */ 2818 static void nfs4_xdr_enc_layoutcommit(struct rpc_rqst *req, 2819 struct xdr_stream *xdr, 2820 struct nfs4_layoutcommit_args *args) 2821 { 2822 struct nfs4_layoutcommit_data *data = 2823 container_of(args, struct nfs4_layoutcommit_data, args); 2824 struct compound_hdr hdr = { 2825 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2826 }; 2827 2828 encode_compound_hdr(xdr, req, &hdr); 2829 encode_sequence(xdr, &args->seq_args, &hdr); 2830 encode_putfh(xdr, NFS_FH(args->inode), &hdr); 2831 encode_layoutcommit(xdr, data->args.inode, args, &hdr); 2832 encode_getfattr(xdr, args->bitmask, &hdr); 2833 encode_nops(&hdr); 2834 } 2835 2836 /* 2837 * Encode LAYOUTRETURN request 2838 */ 2839 static void nfs4_xdr_enc_layoutreturn(struct rpc_rqst *req, 2840 struct xdr_stream *xdr, 2841 struct nfs4_layoutreturn_args *args) 2842 { 2843 struct compound_hdr hdr = { 2844 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2845 }; 2846 2847 encode_compound_hdr(xdr, req, &hdr); 2848 encode_sequence(xdr, &args->seq_args, &hdr); 2849 encode_putfh(xdr, NFS_FH(args->inode), &hdr); 2850 encode_layoutreturn(xdr, args, &hdr); 2851 encode_nops(&hdr); 2852 } 2853 2854 /* 2855 * Encode SECINFO_NO_NAME request 2856 */ 2857 static int nfs4_xdr_enc_secinfo_no_name(struct rpc_rqst *req, 2858 struct xdr_stream *xdr, 2859 struct nfs41_secinfo_no_name_args *args) 2860 { 2861 struct compound_hdr hdr = { 2862 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2863 }; 2864 2865 encode_compound_hdr(xdr, req, &hdr); 2866 encode_sequence(xdr, &args->seq_args, &hdr); 2867 encode_putrootfh(xdr, &hdr); 2868 encode_secinfo_no_name(xdr, args, &hdr); 2869 encode_nops(&hdr); 2870 return 0; 2871 } 2872 2873 /* 2874 * Encode TEST_STATEID request 2875 */ 2876 static void nfs4_xdr_enc_test_stateid(struct rpc_rqst *req, 2877 struct xdr_stream *xdr, 2878 struct nfs41_test_stateid_args *args) 2879 { 2880 struct compound_hdr hdr = { 2881 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2882 }; 2883 2884 encode_compound_hdr(xdr, req, &hdr); 2885 encode_sequence(xdr, &args->seq_args, &hdr); 2886 encode_test_stateid(xdr, args, &hdr); 2887 encode_nops(&hdr); 2888 } 2889 2890 /* 2891 * Encode FREE_STATEID request 2892 */ 2893 static void nfs4_xdr_enc_free_stateid(struct rpc_rqst *req, 2894 struct xdr_stream *xdr, 2895 struct nfs41_free_stateid_args *args) 2896 { 2897 struct compound_hdr hdr = { 2898 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2899 }; 2900 2901 encode_compound_hdr(xdr, req, &hdr); 2902 encode_sequence(xdr, &args->seq_args, &hdr); 2903 encode_free_stateid(xdr, args, &hdr); 2904 encode_nops(&hdr); 2905 } 2906 #endif /* CONFIG_NFS_V4_1 */ 2907 2908 static void print_overflow_msg(const char *func, const struct xdr_stream *xdr) 2909 { 2910 dprintk("nfs: %s: prematurely hit end of receive buffer. " 2911 "Remaining buffer length is %tu words.\n", 2912 func, xdr->end - xdr->p); 2913 } 2914 2915 static int decode_opaque_inline(struct xdr_stream *xdr, unsigned int *len, char **string) 2916 { 2917 __be32 *p; 2918 2919 p = xdr_inline_decode(xdr, 4); 2920 if (unlikely(!p)) 2921 goto out_overflow; 2922 *len = be32_to_cpup(p); 2923 p = xdr_inline_decode(xdr, *len); 2924 if (unlikely(!p)) 2925 goto out_overflow; 2926 *string = (char *)p; 2927 return 0; 2928 out_overflow: 2929 print_overflow_msg(__func__, xdr); 2930 return -EIO; 2931 } 2932 2933 static int decode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr) 2934 { 2935 __be32 *p; 2936 2937 p = xdr_inline_decode(xdr, 8); 2938 if (unlikely(!p)) 2939 goto out_overflow; 2940 hdr->status = be32_to_cpup(p++); 2941 hdr->taglen = be32_to_cpup(p); 2942 2943 p = xdr_inline_decode(xdr, hdr->taglen + 4); 2944 if (unlikely(!p)) 2945 goto out_overflow; 2946 hdr->tag = (char *)p; 2947 p += XDR_QUADLEN(hdr->taglen); 2948 hdr->nops = be32_to_cpup(p); 2949 if (unlikely(hdr->nops < 1)) 2950 return nfs4_stat_to_errno(hdr->status); 2951 return 0; 2952 out_overflow: 2953 print_overflow_msg(__func__, xdr); 2954 return -EIO; 2955 } 2956 2957 static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected) 2958 { 2959 __be32 *p; 2960 uint32_t opnum; 2961 int32_t nfserr; 2962 2963 p = xdr_inline_decode(xdr, 8); 2964 if (unlikely(!p)) 2965 goto out_overflow; 2966 opnum = be32_to_cpup(p++); 2967 if (opnum != expected) { 2968 dprintk("nfs: Server returned operation" 2969 " %d but we issued a request for %d\n", 2970 opnum, expected); 2971 return -EIO; 2972 } 2973 nfserr = be32_to_cpup(p); 2974 if (nfserr != NFS_OK) 2975 return nfs4_stat_to_errno(nfserr); 2976 return 0; 2977 out_overflow: 2978 print_overflow_msg(__func__, xdr); 2979 return -EIO; 2980 } 2981 2982 /* Dummy routine */ 2983 static int decode_ace(struct xdr_stream *xdr, void *ace, struct nfs_client *clp) 2984 { 2985 __be32 *p; 2986 unsigned int strlen; 2987 char *str; 2988 2989 p = xdr_inline_decode(xdr, 12); 2990 if (likely(p)) 2991 return decode_opaque_inline(xdr, &strlen, &str); 2992 print_overflow_msg(__func__, xdr); 2993 return -EIO; 2994 } 2995 2996 static int decode_attr_bitmap(struct xdr_stream *xdr, uint32_t *bitmap) 2997 { 2998 uint32_t bmlen; 2999 __be32 *p; 3000 3001 p = xdr_inline_decode(xdr, 4); 3002 if (unlikely(!p)) 3003 goto out_overflow; 3004 bmlen = be32_to_cpup(p); 3005 3006 bitmap[0] = bitmap[1] = bitmap[2] = 0; 3007 p = xdr_inline_decode(xdr, (bmlen << 2)); 3008 if (unlikely(!p)) 3009 goto out_overflow; 3010 if (bmlen > 0) { 3011 bitmap[0] = be32_to_cpup(p++); 3012 if (bmlen > 1) { 3013 bitmap[1] = be32_to_cpup(p++); 3014 if (bmlen > 2) 3015 bitmap[2] = be32_to_cpup(p); 3016 } 3017 } 3018 return 0; 3019 out_overflow: 3020 print_overflow_msg(__func__, xdr); 3021 return -EIO; 3022 } 3023 3024 static inline int decode_attr_length(struct xdr_stream *xdr, uint32_t *attrlen, __be32 **savep) 3025 { 3026 __be32 *p; 3027 3028 p = xdr_inline_decode(xdr, 4); 3029 if (unlikely(!p)) 3030 goto out_overflow; 3031 *attrlen = be32_to_cpup(p); 3032 *savep = xdr->p; 3033 return 0; 3034 out_overflow: 3035 print_overflow_msg(__func__, xdr); 3036 return -EIO; 3037 } 3038 3039 static int decode_attr_supported(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *bitmask) 3040 { 3041 if (likely(bitmap[0] & FATTR4_WORD0_SUPPORTED_ATTRS)) { 3042 int ret; 3043 ret = decode_attr_bitmap(xdr, bitmask); 3044 if (unlikely(ret < 0)) 3045 return ret; 3046 bitmap[0] &= ~FATTR4_WORD0_SUPPORTED_ATTRS; 3047 } else 3048 bitmask[0] = bitmask[1] = bitmask[2] = 0; 3049 dprintk("%s: bitmask=%08x:%08x:%08x\n", __func__, 3050 bitmask[0], bitmask[1], bitmask[2]); 3051 return 0; 3052 } 3053 3054 static int decode_attr_type(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *type) 3055 { 3056 __be32 *p; 3057 int ret = 0; 3058 3059 *type = 0; 3060 if (unlikely(bitmap[0] & (FATTR4_WORD0_TYPE - 1U))) 3061 return -EIO; 3062 if (likely(bitmap[0] & FATTR4_WORD0_TYPE)) { 3063 p = xdr_inline_decode(xdr, 4); 3064 if (unlikely(!p)) 3065 goto out_overflow; 3066 *type = be32_to_cpup(p); 3067 if (*type < NF4REG || *type > NF4NAMEDATTR) { 3068 dprintk("%s: bad type %d\n", __func__, *type); 3069 return -EIO; 3070 } 3071 bitmap[0] &= ~FATTR4_WORD0_TYPE; 3072 ret = NFS_ATTR_FATTR_TYPE; 3073 } 3074 dprintk("%s: type=0%o\n", __func__, nfs_type2fmt[*type]); 3075 return ret; 3076 out_overflow: 3077 print_overflow_msg(__func__, xdr); 3078 return -EIO; 3079 } 3080 3081 static int decode_attr_fh_expire_type(struct xdr_stream *xdr, 3082 uint32_t *bitmap, uint32_t *type) 3083 { 3084 __be32 *p; 3085 3086 *type = 0; 3087 if (unlikely(bitmap[0] & (FATTR4_WORD0_FH_EXPIRE_TYPE - 1U))) 3088 return -EIO; 3089 if (likely(bitmap[0] & FATTR4_WORD0_FH_EXPIRE_TYPE)) { 3090 p = xdr_inline_decode(xdr, 4); 3091 if (unlikely(!p)) 3092 goto out_overflow; 3093 *type = be32_to_cpup(p); 3094 bitmap[0] &= ~FATTR4_WORD0_FH_EXPIRE_TYPE; 3095 } 3096 dprintk("%s: expire type=0x%x\n", __func__, *type); 3097 return 0; 3098 out_overflow: 3099 print_overflow_msg(__func__, xdr); 3100 return -EIO; 3101 } 3102 3103 static int decode_attr_change(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *change) 3104 { 3105 __be32 *p; 3106 int ret = 0; 3107 3108 *change = 0; 3109 if (unlikely(bitmap[0] & (FATTR4_WORD0_CHANGE - 1U))) 3110 return -EIO; 3111 if (likely(bitmap[0] & FATTR4_WORD0_CHANGE)) { 3112 p = xdr_inline_decode(xdr, 8); 3113 if (unlikely(!p)) 3114 goto out_overflow; 3115 xdr_decode_hyper(p, change); 3116 bitmap[0] &= ~FATTR4_WORD0_CHANGE; 3117 ret = NFS_ATTR_FATTR_CHANGE; 3118 } 3119 dprintk("%s: change attribute=%Lu\n", __func__, 3120 (unsigned long long)*change); 3121 return ret; 3122 out_overflow: 3123 print_overflow_msg(__func__, xdr); 3124 return -EIO; 3125 } 3126 3127 static int decode_attr_size(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *size) 3128 { 3129 __be32 *p; 3130 int ret = 0; 3131 3132 *size = 0; 3133 if (unlikely(bitmap[0] & (FATTR4_WORD0_SIZE - 1U))) 3134 return -EIO; 3135 if (likely(bitmap[0] & FATTR4_WORD0_SIZE)) { 3136 p = xdr_inline_decode(xdr, 8); 3137 if (unlikely(!p)) 3138 goto out_overflow; 3139 xdr_decode_hyper(p, size); 3140 bitmap[0] &= ~FATTR4_WORD0_SIZE; 3141 ret = NFS_ATTR_FATTR_SIZE; 3142 } 3143 dprintk("%s: file size=%Lu\n", __func__, (unsigned long long)*size); 3144 return ret; 3145 out_overflow: 3146 print_overflow_msg(__func__, xdr); 3147 return -EIO; 3148 } 3149 3150 static int decode_attr_link_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) 3151 { 3152 __be32 *p; 3153 3154 *res = 0; 3155 if (unlikely(bitmap[0] & (FATTR4_WORD0_LINK_SUPPORT - 1U))) 3156 return -EIO; 3157 if (likely(bitmap[0] & FATTR4_WORD0_LINK_SUPPORT)) { 3158 p = xdr_inline_decode(xdr, 4); 3159 if (unlikely(!p)) 3160 goto out_overflow; 3161 *res = be32_to_cpup(p); 3162 bitmap[0] &= ~FATTR4_WORD0_LINK_SUPPORT; 3163 } 3164 dprintk("%s: link support=%s\n", __func__, *res == 0 ? "false" : "true"); 3165 return 0; 3166 out_overflow: 3167 print_overflow_msg(__func__, xdr); 3168 return -EIO; 3169 } 3170 3171 static int decode_attr_symlink_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) 3172 { 3173 __be32 *p; 3174 3175 *res = 0; 3176 if (unlikely(bitmap[0] & (FATTR4_WORD0_SYMLINK_SUPPORT - 1U))) 3177 return -EIO; 3178 if (likely(bitmap[0] & FATTR4_WORD0_SYMLINK_SUPPORT)) { 3179 p = xdr_inline_decode(xdr, 4); 3180 if (unlikely(!p)) 3181 goto out_overflow; 3182 *res = be32_to_cpup(p); 3183 bitmap[0] &= ~FATTR4_WORD0_SYMLINK_SUPPORT; 3184 } 3185 dprintk("%s: symlink support=%s\n", __func__, *res == 0 ? "false" : "true"); 3186 return 0; 3187 out_overflow: 3188 print_overflow_msg(__func__, xdr); 3189 return -EIO; 3190 } 3191 3192 static int decode_attr_fsid(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fsid *fsid) 3193 { 3194 __be32 *p; 3195 int ret = 0; 3196 3197 fsid->major = 0; 3198 fsid->minor = 0; 3199 if (unlikely(bitmap[0] & (FATTR4_WORD0_FSID - 1U))) 3200 return -EIO; 3201 if (likely(bitmap[0] & FATTR4_WORD0_FSID)) { 3202 p = xdr_inline_decode(xdr, 16); 3203 if (unlikely(!p)) 3204 goto out_overflow; 3205 p = xdr_decode_hyper(p, &fsid->major); 3206 xdr_decode_hyper(p, &fsid->minor); 3207 bitmap[0] &= ~FATTR4_WORD0_FSID; 3208 ret = NFS_ATTR_FATTR_FSID; 3209 } 3210 dprintk("%s: fsid=(0x%Lx/0x%Lx)\n", __func__, 3211 (unsigned long long)fsid->major, 3212 (unsigned long long)fsid->minor); 3213 return ret; 3214 out_overflow: 3215 print_overflow_msg(__func__, xdr); 3216 return -EIO; 3217 } 3218 3219 static int decode_attr_lease_time(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) 3220 { 3221 __be32 *p; 3222 3223 *res = 60; 3224 if (unlikely(bitmap[0] & (FATTR4_WORD0_LEASE_TIME - 1U))) 3225 return -EIO; 3226 if (likely(bitmap[0] & FATTR4_WORD0_LEASE_TIME)) { 3227 p = xdr_inline_decode(xdr, 4); 3228 if (unlikely(!p)) 3229 goto out_overflow; 3230 *res = be32_to_cpup(p); 3231 bitmap[0] &= ~FATTR4_WORD0_LEASE_TIME; 3232 } 3233 dprintk("%s: file size=%u\n", __func__, (unsigned int)*res); 3234 return 0; 3235 out_overflow: 3236 print_overflow_msg(__func__, xdr); 3237 return -EIO; 3238 } 3239 3240 static int decode_attr_error(struct xdr_stream *xdr, uint32_t *bitmap, int32_t *res) 3241 { 3242 __be32 *p; 3243 3244 if (unlikely(bitmap[0] & (FATTR4_WORD0_RDATTR_ERROR - 1U))) 3245 return -EIO; 3246 if (likely(bitmap[0] & FATTR4_WORD0_RDATTR_ERROR)) { 3247 p = xdr_inline_decode(xdr, 4); 3248 if (unlikely(!p)) 3249 goto out_overflow; 3250 bitmap[0] &= ~FATTR4_WORD0_RDATTR_ERROR; 3251 *res = -be32_to_cpup(p); 3252 } 3253 return 0; 3254 out_overflow: 3255 print_overflow_msg(__func__, xdr); 3256 return -EIO; 3257 } 3258 3259 static int decode_attr_filehandle(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fh *fh) 3260 { 3261 __be32 *p; 3262 int len; 3263 3264 if (fh != NULL) 3265 memset(fh, 0, sizeof(*fh)); 3266 3267 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEHANDLE - 1U))) 3268 return -EIO; 3269 if (likely(bitmap[0] & FATTR4_WORD0_FILEHANDLE)) { 3270 p = xdr_inline_decode(xdr, 4); 3271 if (unlikely(!p)) 3272 goto out_overflow; 3273 len = be32_to_cpup(p); 3274 if (len > NFS4_FHSIZE) 3275 return -EIO; 3276 p = xdr_inline_decode(xdr, len); 3277 if (unlikely(!p)) 3278 goto out_overflow; 3279 if (fh != NULL) { 3280 memcpy(fh->data, p, len); 3281 fh->size = len; 3282 } 3283 bitmap[0] &= ~FATTR4_WORD0_FILEHANDLE; 3284 } 3285 return 0; 3286 out_overflow: 3287 print_overflow_msg(__func__, xdr); 3288 return -EIO; 3289 } 3290 3291 static int decode_attr_aclsupport(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) 3292 { 3293 __be32 *p; 3294 3295 *res = ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL; 3296 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACLSUPPORT - 1U))) 3297 return -EIO; 3298 if (likely(bitmap[0] & FATTR4_WORD0_ACLSUPPORT)) { 3299 p = xdr_inline_decode(xdr, 4); 3300 if (unlikely(!p)) 3301 goto out_overflow; 3302 *res = be32_to_cpup(p); 3303 bitmap[0] &= ~FATTR4_WORD0_ACLSUPPORT; 3304 } 3305 dprintk("%s: ACLs supported=%u\n", __func__, (unsigned int)*res); 3306 return 0; 3307 out_overflow: 3308 print_overflow_msg(__func__, xdr); 3309 return -EIO; 3310 } 3311 3312 static int decode_attr_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid) 3313 { 3314 __be32 *p; 3315 int ret = 0; 3316 3317 *fileid = 0; 3318 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEID - 1U))) 3319 return -EIO; 3320 if (likely(bitmap[0] & FATTR4_WORD0_FILEID)) { 3321 p = xdr_inline_decode(xdr, 8); 3322 if (unlikely(!p)) 3323 goto out_overflow; 3324 xdr_decode_hyper(p, fileid); 3325 bitmap[0] &= ~FATTR4_WORD0_FILEID; 3326 ret = NFS_ATTR_FATTR_FILEID; 3327 } 3328 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid); 3329 return ret; 3330 out_overflow: 3331 print_overflow_msg(__func__, xdr); 3332 return -EIO; 3333 } 3334 3335 static int decode_attr_mounted_on_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid) 3336 { 3337 __be32 *p; 3338 int ret = 0; 3339 3340 *fileid = 0; 3341 if (unlikely(bitmap[1] & (FATTR4_WORD1_MOUNTED_ON_FILEID - 1U))) 3342 return -EIO; 3343 if (likely(bitmap[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)) { 3344 p = xdr_inline_decode(xdr, 8); 3345 if (unlikely(!p)) 3346 goto out_overflow; 3347 xdr_decode_hyper(p, fileid); 3348 bitmap[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID; 3349 ret = NFS_ATTR_FATTR_MOUNTED_ON_FILEID; 3350 } 3351 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid); 3352 return ret; 3353 out_overflow: 3354 print_overflow_msg(__func__, xdr); 3355 return -EIO; 3356 } 3357 3358 static int decode_attr_files_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 3359 { 3360 __be32 *p; 3361 int status = 0; 3362 3363 *res = 0; 3364 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_AVAIL - 1U))) 3365 return -EIO; 3366 if (likely(bitmap[0] & FATTR4_WORD0_FILES_AVAIL)) { 3367 p = xdr_inline_decode(xdr, 8); 3368 if (unlikely(!p)) 3369 goto out_overflow; 3370 xdr_decode_hyper(p, res); 3371 bitmap[0] &= ~FATTR4_WORD0_FILES_AVAIL; 3372 } 3373 dprintk("%s: files avail=%Lu\n", __func__, (unsigned long long)*res); 3374 return status; 3375 out_overflow: 3376 print_overflow_msg(__func__, xdr); 3377 return -EIO; 3378 } 3379 3380 static int decode_attr_files_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 3381 { 3382 __be32 *p; 3383 int status = 0; 3384 3385 *res = 0; 3386 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_FREE - 1U))) 3387 return -EIO; 3388 if (likely(bitmap[0] & FATTR4_WORD0_FILES_FREE)) { 3389 p = xdr_inline_decode(xdr, 8); 3390 if (unlikely(!p)) 3391 goto out_overflow; 3392 xdr_decode_hyper(p, res); 3393 bitmap[0] &= ~FATTR4_WORD0_FILES_FREE; 3394 } 3395 dprintk("%s: files free=%Lu\n", __func__, (unsigned long long)*res); 3396 return status; 3397 out_overflow: 3398 print_overflow_msg(__func__, xdr); 3399 return -EIO; 3400 } 3401 3402 static int decode_attr_files_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 3403 { 3404 __be32 *p; 3405 int status = 0; 3406 3407 *res = 0; 3408 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_TOTAL - 1U))) 3409 return -EIO; 3410 if (likely(bitmap[0] & FATTR4_WORD0_FILES_TOTAL)) { 3411 p = xdr_inline_decode(xdr, 8); 3412 if (unlikely(!p)) 3413 goto out_overflow; 3414 xdr_decode_hyper(p, res); 3415 bitmap[0] &= ~FATTR4_WORD0_FILES_TOTAL; 3416 } 3417 dprintk("%s: files total=%Lu\n", __func__, (unsigned long long)*res); 3418 return status; 3419 out_overflow: 3420 print_overflow_msg(__func__, xdr); 3421 return -EIO; 3422 } 3423 3424 static int decode_pathname(struct xdr_stream *xdr, struct nfs4_pathname *path) 3425 { 3426 u32 n; 3427 __be32 *p; 3428 int status = 0; 3429 3430 p = xdr_inline_decode(xdr, 4); 3431 if (unlikely(!p)) 3432 goto out_overflow; 3433 n = be32_to_cpup(p); 3434 if (n == 0) 3435 goto root_path; 3436 dprintk("pathname4: "); 3437 path->ncomponents = 0; 3438 while (path->ncomponents < n) { 3439 struct nfs4_string *component = &path->components[path->ncomponents]; 3440 status = decode_opaque_inline(xdr, &component->len, &component->data); 3441 if (unlikely(status != 0)) 3442 goto out_eio; 3443 ifdebug (XDR) 3444 pr_cont("%s%.*s ", 3445 (path->ncomponents != n ? "/ " : ""), 3446 component->len, component->data); 3447 if (path->ncomponents < NFS4_PATHNAME_MAXCOMPONENTS) 3448 path->ncomponents++; 3449 else { 3450 dprintk("cannot parse %d components in path\n", n); 3451 goto out_eio; 3452 } 3453 } 3454 out: 3455 return status; 3456 root_path: 3457 /* a root pathname is sent as a zero component4 */ 3458 path->ncomponents = 1; 3459 path->components[0].len=0; 3460 path->components[0].data=NULL; 3461 dprintk("pathname4: /\n"); 3462 goto out; 3463 out_eio: 3464 dprintk(" status %d", status); 3465 status = -EIO; 3466 goto out; 3467 out_overflow: 3468 print_overflow_msg(__func__, xdr); 3469 return -EIO; 3470 } 3471 3472 static int decode_attr_fs_locations(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_fs_locations *res) 3473 { 3474 int n; 3475 __be32 *p; 3476 int status = -EIO; 3477 3478 if (unlikely(bitmap[0] & (FATTR4_WORD0_FS_LOCATIONS -1U))) 3479 goto out; 3480 status = 0; 3481 if (unlikely(!(bitmap[0] & FATTR4_WORD0_FS_LOCATIONS))) 3482 goto out; 3483 status = -EIO; 3484 /* Ignore borken servers that return unrequested attrs */ 3485 if (unlikely(res == NULL)) 3486 goto out; 3487 dprintk("%s: fsroot:\n", __func__); 3488 status = decode_pathname(xdr, &res->fs_path); 3489 if (unlikely(status != 0)) 3490 goto out; 3491 p = xdr_inline_decode(xdr, 4); 3492 if (unlikely(!p)) 3493 goto out_overflow; 3494 n = be32_to_cpup(p); 3495 if (n <= 0) 3496 goto out_eio; 3497 res->nlocations = 0; 3498 while (res->nlocations < n) { 3499 u32 m; 3500 struct nfs4_fs_location *loc = &res->locations[res->nlocations]; 3501 3502 p = xdr_inline_decode(xdr, 4); 3503 if (unlikely(!p)) 3504 goto out_overflow; 3505 m = be32_to_cpup(p); 3506 3507 loc->nservers = 0; 3508 dprintk("%s: servers:\n", __func__); 3509 while (loc->nservers < m) { 3510 struct nfs4_string *server = &loc->servers[loc->nservers]; 3511 status = decode_opaque_inline(xdr, &server->len, &server->data); 3512 if (unlikely(status != 0)) 3513 goto out_eio; 3514 dprintk("%s ", server->data); 3515 if (loc->nservers < NFS4_FS_LOCATION_MAXSERVERS) 3516 loc->nservers++; 3517 else { 3518 unsigned int i; 3519 dprintk("%s: using first %u of %u servers " 3520 "returned for location %u\n", 3521 __func__, 3522 NFS4_FS_LOCATION_MAXSERVERS, 3523 m, res->nlocations); 3524 for (i = loc->nservers; i < m; i++) { 3525 unsigned int len; 3526 char *data; 3527 status = decode_opaque_inline(xdr, &len, &data); 3528 if (unlikely(status != 0)) 3529 goto out_eio; 3530 } 3531 } 3532 } 3533 status = decode_pathname(xdr, &loc->rootpath); 3534 if (unlikely(status != 0)) 3535 goto out_eio; 3536 if (res->nlocations < NFS4_FS_LOCATIONS_MAXENTRIES) 3537 res->nlocations++; 3538 } 3539 if (res->nlocations != 0) 3540 status = NFS_ATTR_FATTR_V4_LOCATIONS; 3541 out: 3542 dprintk("%s: fs_locations done, error = %d\n", __func__, status); 3543 return status; 3544 out_overflow: 3545 print_overflow_msg(__func__, xdr); 3546 out_eio: 3547 status = -EIO; 3548 goto out; 3549 } 3550 3551 static int decode_attr_maxfilesize(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 3552 { 3553 __be32 *p; 3554 int status = 0; 3555 3556 *res = 0; 3557 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXFILESIZE - 1U))) 3558 return -EIO; 3559 if (likely(bitmap[0] & FATTR4_WORD0_MAXFILESIZE)) { 3560 p = xdr_inline_decode(xdr, 8); 3561 if (unlikely(!p)) 3562 goto out_overflow; 3563 xdr_decode_hyper(p, res); 3564 bitmap[0] &= ~FATTR4_WORD0_MAXFILESIZE; 3565 } 3566 dprintk("%s: maxfilesize=%Lu\n", __func__, (unsigned long long)*res); 3567 return status; 3568 out_overflow: 3569 print_overflow_msg(__func__, xdr); 3570 return -EIO; 3571 } 3572 3573 static int decode_attr_maxlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxlink) 3574 { 3575 __be32 *p; 3576 int status = 0; 3577 3578 *maxlink = 1; 3579 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXLINK - 1U))) 3580 return -EIO; 3581 if (likely(bitmap[0] & FATTR4_WORD0_MAXLINK)) { 3582 p = xdr_inline_decode(xdr, 4); 3583 if (unlikely(!p)) 3584 goto out_overflow; 3585 *maxlink = be32_to_cpup(p); 3586 bitmap[0] &= ~FATTR4_WORD0_MAXLINK; 3587 } 3588 dprintk("%s: maxlink=%u\n", __func__, *maxlink); 3589 return status; 3590 out_overflow: 3591 print_overflow_msg(__func__, xdr); 3592 return -EIO; 3593 } 3594 3595 static int decode_attr_maxname(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxname) 3596 { 3597 __be32 *p; 3598 int status = 0; 3599 3600 *maxname = 1024; 3601 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXNAME - 1U))) 3602 return -EIO; 3603 if (likely(bitmap[0] & FATTR4_WORD0_MAXNAME)) { 3604 p = xdr_inline_decode(xdr, 4); 3605 if (unlikely(!p)) 3606 goto out_overflow; 3607 *maxname = be32_to_cpup(p); 3608 bitmap[0] &= ~FATTR4_WORD0_MAXNAME; 3609 } 3610 dprintk("%s: maxname=%u\n", __func__, *maxname); 3611 return status; 3612 out_overflow: 3613 print_overflow_msg(__func__, xdr); 3614 return -EIO; 3615 } 3616 3617 static int decode_attr_maxread(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) 3618 { 3619 __be32 *p; 3620 int status = 0; 3621 3622 *res = 1024; 3623 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXREAD - 1U))) 3624 return -EIO; 3625 if (likely(bitmap[0] & FATTR4_WORD0_MAXREAD)) { 3626 uint64_t maxread; 3627 p = xdr_inline_decode(xdr, 8); 3628 if (unlikely(!p)) 3629 goto out_overflow; 3630 xdr_decode_hyper(p, &maxread); 3631 if (maxread > 0x7FFFFFFF) 3632 maxread = 0x7FFFFFFF; 3633 *res = (uint32_t)maxread; 3634 bitmap[0] &= ~FATTR4_WORD0_MAXREAD; 3635 } 3636 dprintk("%s: maxread=%lu\n", __func__, (unsigned long)*res); 3637 return status; 3638 out_overflow: 3639 print_overflow_msg(__func__, xdr); 3640 return -EIO; 3641 } 3642 3643 static int decode_attr_maxwrite(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) 3644 { 3645 __be32 *p; 3646 int status = 0; 3647 3648 *res = 1024; 3649 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXWRITE - 1U))) 3650 return -EIO; 3651 if (likely(bitmap[0] & FATTR4_WORD0_MAXWRITE)) { 3652 uint64_t maxwrite; 3653 p = xdr_inline_decode(xdr, 8); 3654 if (unlikely(!p)) 3655 goto out_overflow; 3656 xdr_decode_hyper(p, &maxwrite); 3657 if (maxwrite > 0x7FFFFFFF) 3658 maxwrite = 0x7FFFFFFF; 3659 *res = (uint32_t)maxwrite; 3660 bitmap[0] &= ~FATTR4_WORD0_MAXWRITE; 3661 } 3662 dprintk("%s: maxwrite=%lu\n", __func__, (unsigned long)*res); 3663 return status; 3664 out_overflow: 3665 print_overflow_msg(__func__, xdr); 3666 return -EIO; 3667 } 3668 3669 static int decode_attr_mode(struct xdr_stream *xdr, uint32_t *bitmap, umode_t *mode) 3670 { 3671 uint32_t tmp; 3672 __be32 *p; 3673 int ret = 0; 3674 3675 *mode = 0; 3676 if (unlikely(bitmap[1] & (FATTR4_WORD1_MODE - 1U))) 3677 return -EIO; 3678 if (likely(bitmap[1] & FATTR4_WORD1_MODE)) { 3679 p = xdr_inline_decode(xdr, 4); 3680 if (unlikely(!p)) 3681 goto out_overflow; 3682 tmp = be32_to_cpup(p); 3683 *mode = tmp & ~S_IFMT; 3684 bitmap[1] &= ~FATTR4_WORD1_MODE; 3685 ret = NFS_ATTR_FATTR_MODE; 3686 } 3687 dprintk("%s: file mode=0%o\n", __func__, (unsigned int)*mode); 3688 return ret; 3689 out_overflow: 3690 print_overflow_msg(__func__, xdr); 3691 return -EIO; 3692 } 3693 3694 static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *nlink) 3695 { 3696 __be32 *p; 3697 int ret = 0; 3698 3699 *nlink = 1; 3700 if (unlikely(bitmap[1] & (FATTR4_WORD1_NUMLINKS - 1U))) 3701 return -EIO; 3702 if (likely(bitmap[1] & FATTR4_WORD1_NUMLINKS)) { 3703 p = xdr_inline_decode(xdr, 4); 3704 if (unlikely(!p)) 3705 goto out_overflow; 3706 *nlink = be32_to_cpup(p); 3707 bitmap[1] &= ~FATTR4_WORD1_NUMLINKS; 3708 ret = NFS_ATTR_FATTR_NLINK; 3709 } 3710 dprintk("%s: nlink=%u\n", __func__, (unsigned int)*nlink); 3711 return ret; 3712 out_overflow: 3713 print_overflow_msg(__func__, xdr); 3714 return -EIO; 3715 } 3716 3717 static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap, 3718 const struct nfs_server *server, uint32_t *uid, 3719 struct nfs4_string *owner_name) 3720 { 3721 uint32_t len; 3722 __be32 *p; 3723 int ret = 0; 3724 3725 *uid = -2; 3726 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER - 1U))) 3727 return -EIO; 3728 if (likely(bitmap[1] & FATTR4_WORD1_OWNER)) { 3729 p = xdr_inline_decode(xdr, 4); 3730 if (unlikely(!p)) 3731 goto out_overflow; 3732 len = be32_to_cpup(p); 3733 p = xdr_inline_decode(xdr, len); 3734 if (unlikely(!p)) 3735 goto out_overflow; 3736 if (owner_name != NULL) { 3737 owner_name->data = kmemdup(p, len, GFP_NOWAIT); 3738 if (owner_name->data != NULL) { 3739 owner_name->len = len; 3740 ret = NFS_ATTR_FATTR_OWNER_NAME; 3741 } 3742 } else if (len < XDR_MAX_NETOBJ) { 3743 if (nfs_map_name_to_uid(server, (char *)p, len, uid) == 0) 3744 ret = NFS_ATTR_FATTR_OWNER; 3745 else 3746 dprintk("%s: nfs_map_name_to_uid failed!\n", 3747 __func__); 3748 } else 3749 dprintk("%s: name too long (%u)!\n", 3750 __func__, len); 3751 bitmap[1] &= ~FATTR4_WORD1_OWNER; 3752 } 3753 dprintk("%s: uid=%d\n", __func__, (int)*uid); 3754 return ret; 3755 out_overflow: 3756 print_overflow_msg(__func__, xdr); 3757 return -EIO; 3758 } 3759 3760 static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap, 3761 const struct nfs_server *server, uint32_t *gid, 3762 struct nfs4_string *group_name) 3763 { 3764 uint32_t len; 3765 __be32 *p; 3766 int ret = 0; 3767 3768 *gid = -2; 3769 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER_GROUP - 1U))) 3770 return -EIO; 3771 if (likely(bitmap[1] & FATTR4_WORD1_OWNER_GROUP)) { 3772 p = xdr_inline_decode(xdr, 4); 3773 if (unlikely(!p)) 3774 goto out_overflow; 3775 len = be32_to_cpup(p); 3776 p = xdr_inline_decode(xdr, len); 3777 if (unlikely(!p)) 3778 goto out_overflow; 3779 if (group_name != NULL) { 3780 group_name->data = kmemdup(p, len, GFP_NOWAIT); 3781 if (group_name->data != NULL) { 3782 group_name->len = len; 3783 ret = NFS_ATTR_FATTR_GROUP_NAME; 3784 } 3785 } else if (len < XDR_MAX_NETOBJ) { 3786 if (nfs_map_group_to_gid(server, (char *)p, len, gid) == 0) 3787 ret = NFS_ATTR_FATTR_GROUP; 3788 else 3789 dprintk("%s: nfs_map_group_to_gid failed!\n", 3790 __func__); 3791 } else 3792 dprintk("%s: name too long (%u)!\n", 3793 __func__, len); 3794 bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP; 3795 } 3796 dprintk("%s: gid=%d\n", __func__, (int)*gid); 3797 return ret; 3798 out_overflow: 3799 print_overflow_msg(__func__, xdr); 3800 return -EIO; 3801 } 3802 3803 static int decode_attr_rdev(struct xdr_stream *xdr, uint32_t *bitmap, dev_t *rdev) 3804 { 3805 uint32_t major = 0, minor = 0; 3806 __be32 *p; 3807 int ret = 0; 3808 3809 *rdev = MKDEV(0,0); 3810 if (unlikely(bitmap[1] & (FATTR4_WORD1_RAWDEV - 1U))) 3811 return -EIO; 3812 if (likely(bitmap[1] & FATTR4_WORD1_RAWDEV)) { 3813 dev_t tmp; 3814 3815 p = xdr_inline_decode(xdr, 8); 3816 if (unlikely(!p)) 3817 goto out_overflow; 3818 major = be32_to_cpup(p++); 3819 minor = be32_to_cpup(p); 3820 tmp = MKDEV(major, minor); 3821 if (MAJOR(tmp) == major && MINOR(tmp) == minor) 3822 *rdev = tmp; 3823 bitmap[1] &= ~ FATTR4_WORD1_RAWDEV; 3824 ret = NFS_ATTR_FATTR_RDEV; 3825 } 3826 dprintk("%s: rdev=(0x%x:0x%x)\n", __func__, major, minor); 3827 return ret; 3828 out_overflow: 3829 print_overflow_msg(__func__, xdr); 3830 return -EIO; 3831 } 3832 3833 static int decode_attr_space_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 3834 { 3835 __be32 *p; 3836 int status = 0; 3837 3838 *res = 0; 3839 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_AVAIL - 1U))) 3840 return -EIO; 3841 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_AVAIL)) { 3842 p = xdr_inline_decode(xdr, 8); 3843 if (unlikely(!p)) 3844 goto out_overflow; 3845 xdr_decode_hyper(p, res); 3846 bitmap[1] &= ~FATTR4_WORD1_SPACE_AVAIL; 3847 } 3848 dprintk("%s: space avail=%Lu\n", __func__, (unsigned long long)*res); 3849 return status; 3850 out_overflow: 3851 print_overflow_msg(__func__, xdr); 3852 return -EIO; 3853 } 3854 3855 static int decode_attr_space_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 3856 { 3857 __be32 *p; 3858 int status = 0; 3859 3860 *res = 0; 3861 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_FREE - 1U))) 3862 return -EIO; 3863 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_FREE)) { 3864 p = xdr_inline_decode(xdr, 8); 3865 if (unlikely(!p)) 3866 goto out_overflow; 3867 xdr_decode_hyper(p, res); 3868 bitmap[1] &= ~FATTR4_WORD1_SPACE_FREE; 3869 } 3870 dprintk("%s: space free=%Lu\n", __func__, (unsigned long long)*res); 3871 return status; 3872 out_overflow: 3873 print_overflow_msg(__func__, xdr); 3874 return -EIO; 3875 } 3876 3877 static int decode_attr_space_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 3878 { 3879 __be32 *p; 3880 int status = 0; 3881 3882 *res = 0; 3883 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_TOTAL - 1U))) 3884 return -EIO; 3885 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_TOTAL)) { 3886 p = xdr_inline_decode(xdr, 8); 3887 if (unlikely(!p)) 3888 goto out_overflow; 3889 xdr_decode_hyper(p, res); 3890 bitmap[1] &= ~FATTR4_WORD1_SPACE_TOTAL; 3891 } 3892 dprintk("%s: space total=%Lu\n", __func__, (unsigned long long)*res); 3893 return status; 3894 out_overflow: 3895 print_overflow_msg(__func__, xdr); 3896 return -EIO; 3897 } 3898 3899 static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *used) 3900 { 3901 __be32 *p; 3902 int ret = 0; 3903 3904 *used = 0; 3905 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_USED - 1U))) 3906 return -EIO; 3907 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_USED)) { 3908 p = xdr_inline_decode(xdr, 8); 3909 if (unlikely(!p)) 3910 goto out_overflow; 3911 xdr_decode_hyper(p, used); 3912 bitmap[1] &= ~FATTR4_WORD1_SPACE_USED; 3913 ret = NFS_ATTR_FATTR_SPACE_USED; 3914 } 3915 dprintk("%s: space used=%Lu\n", __func__, 3916 (unsigned long long)*used); 3917 return ret; 3918 out_overflow: 3919 print_overflow_msg(__func__, xdr); 3920 return -EIO; 3921 } 3922 3923 static int decode_attr_time(struct xdr_stream *xdr, struct timespec *time) 3924 { 3925 __be32 *p; 3926 uint64_t sec; 3927 uint32_t nsec; 3928 3929 p = xdr_inline_decode(xdr, 12); 3930 if (unlikely(!p)) 3931 goto out_overflow; 3932 p = xdr_decode_hyper(p, &sec); 3933 nsec = be32_to_cpup(p); 3934 time->tv_sec = (time_t)sec; 3935 time->tv_nsec = (long)nsec; 3936 return 0; 3937 out_overflow: 3938 print_overflow_msg(__func__, xdr); 3939 return -EIO; 3940 } 3941 3942 static int decode_attr_time_access(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time) 3943 { 3944 int status = 0; 3945 3946 time->tv_sec = 0; 3947 time->tv_nsec = 0; 3948 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_ACCESS - 1U))) 3949 return -EIO; 3950 if (likely(bitmap[1] & FATTR4_WORD1_TIME_ACCESS)) { 3951 status = decode_attr_time(xdr, time); 3952 if (status == 0) 3953 status = NFS_ATTR_FATTR_ATIME; 3954 bitmap[1] &= ~FATTR4_WORD1_TIME_ACCESS; 3955 } 3956 dprintk("%s: atime=%ld\n", __func__, (long)time->tv_sec); 3957 return status; 3958 } 3959 3960 static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time) 3961 { 3962 int status = 0; 3963 3964 time->tv_sec = 0; 3965 time->tv_nsec = 0; 3966 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_METADATA - 1U))) 3967 return -EIO; 3968 if (likely(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) { 3969 status = decode_attr_time(xdr, time); 3970 if (status == 0) 3971 status = NFS_ATTR_FATTR_CTIME; 3972 bitmap[1] &= ~FATTR4_WORD1_TIME_METADATA; 3973 } 3974 dprintk("%s: ctime=%ld\n", __func__, (long)time->tv_sec); 3975 return status; 3976 } 3977 3978 static int decode_attr_time_delta(struct xdr_stream *xdr, uint32_t *bitmap, 3979 struct timespec *time) 3980 { 3981 int status = 0; 3982 3983 time->tv_sec = 0; 3984 time->tv_nsec = 0; 3985 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_DELTA - 1U))) 3986 return -EIO; 3987 if (likely(bitmap[1] & FATTR4_WORD1_TIME_DELTA)) { 3988 status = decode_attr_time(xdr, time); 3989 bitmap[1] &= ~FATTR4_WORD1_TIME_DELTA; 3990 } 3991 dprintk("%s: time_delta=%ld %ld\n", __func__, (long)time->tv_sec, 3992 (long)time->tv_nsec); 3993 return status; 3994 } 3995 3996 static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time) 3997 { 3998 int status = 0; 3999 4000 time->tv_sec = 0; 4001 time->tv_nsec = 0; 4002 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_MODIFY - 1U))) 4003 return -EIO; 4004 if (likely(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) { 4005 status = decode_attr_time(xdr, time); 4006 if (status == 0) 4007 status = NFS_ATTR_FATTR_MTIME; 4008 bitmap[1] &= ~FATTR4_WORD1_TIME_MODIFY; 4009 } 4010 dprintk("%s: mtime=%ld\n", __func__, (long)time->tv_sec); 4011 return status; 4012 } 4013 4014 static int verify_attr_len(struct xdr_stream *xdr, __be32 *savep, uint32_t attrlen) 4015 { 4016 unsigned int attrwords = XDR_QUADLEN(attrlen); 4017 unsigned int nwords = xdr->p - savep; 4018 4019 if (unlikely(attrwords != nwords)) { 4020 dprintk("%s: server returned incorrect attribute length: " 4021 "%u %c %u\n", 4022 __func__, 4023 attrwords << 2, 4024 (attrwords < nwords) ? '<' : '>', 4025 nwords << 2); 4026 return -EIO; 4027 } 4028 return 0; 4029 } 4030 4031 static int decode_change_info(struct xdr_stream *xdr, struct nfs4_change_info *cinfo) 4032 { 4033 __be32 *p; 4034 4035 p = xdr_inline_decode(xdr, 20); 4036 if (unlikely(!p)) 4037 goto out_overflow; 4038 cinfo->atomic = be32_to_cpup(p++); 4039 p = xdr_decode_hyper(p, &cinfo->before); 4040 xdr_decode_hyper(p, &cinfo->after); 4041 return 0; 4042 out_overflow: 4043 print_overflow_msg(__func__, xdr); 4044 return -EIO; 4045 } 4046 4047 static int decode_access(struct xdr_stream *xdr, struct nfs4_accessres *access) 4048 { 4049 __be32 *p; 4050 uint32_t supp, acc; 4051 int status; 4052 4053 status = decode_op_hdr(xdr, OP_ACCESS); 4054 if (status) 4055 return status; 4056 p = xdr_inline_decode(xdr, 8); 4057 if (unlikely(!p)) 4058 goto out_overflow; 4059 supp = be32_to_cpup(p++); 4060 acc = be32_to_cpup(p); 4061 access->supported = supp; 4062 access->access = acc; 4063 return 0; 4064 out_overflow: 4065 print_overflow_msg(__func__, xdr); 4066 return -EIO; 4067 } 4068 4069 static int decode_opaque_fixed(struct xdr_stream *xdr, void *buf, size_t len) 4070 { 4071 __be32 *p; 4072 4073 p = xdr_inline_decode(xdr, len); 4074 if (likely(p)) { 4075 memcpy(buf, p, len); 4076 return 0; 4077 } 4078 print_overflow_msg(__func__, xdr); 4079 return -EIO; 4080 } 4081 4082 static int decode_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid) 4083 { 4084 return decode_opaque_fixed(xdr, stateid, NFS4_STATEID_SIZE); 4085 } 4086 4087 static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res) 4088 { 4089 int status; 4090 4091 status = decode_op_hdr(xdr, OP_CLOSE); 4092 if (status != -EIO) 4093 nfs_increment_open_seqid(status, res->seqid); 4094 if (!status) 4095 status = decode_stateid(xdr, &res->stateid); 4096 return status; 4097 } 4098 4099 static int decode_verifier(struct xdr_stream *xdr, void *verifier) 4100 { 4101 return decode_opaque_fixed(xdr, verifier, NFS4_VERIFIER_SIZE); 4102 } 4103 4104 static int decode_commit(struct xdr_stream *xdr, struct nfs_writeres *res) 4105 { 4106 int status; 4107 4108 status = decode_op_hdr(xdr, OP_COMMIT); 4109 if (!status) 4110 status = decode_verifier(xdr, res->verf->verifier); 4111 return status; 4112 } 4113 4114 static int decode_create(struct xdr_stream *xdr, struct nfs4_change_info *cinfo) 4115 { 4116 __be32 *p; 4117 uint32_t bmlen; 4118 int status; 4119 4120 status = decode_op_hdr(xdr, OP_CREATE); 4121 if (status) 4122 return status; 4123 if ((status = decode_change_info(xdr, cinfo))) 4124 return status; 4125 p = xdr_inline_decode(xdr, 4); 4126 if (unlikely(!p)) 4127 goto out_overflow; 4128 bmlen = be32_to_cpup(p); 4129 p = xdr_inline_decode(xdr, bmlen << 2); 4130 if (likely(p)) 4131 return 0; 4132 out_overflow: 4133 print_overflow_msg(__func__, xdr); 4134 return -EIO; 4135 } 4136 4137 static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_res *res) 4138 { 4139 __be32 *savep; 4140 uint32_t attrlen, bitmap[3] = {0}; 4141 int status; 4142 4143 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) 4144 goto xdr_error; 4145 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) 4146 goto xdr_error; 4147 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) 4148 goto xdr_error; 4149 if ((status = decode_attr_supported(xdr, bitmap, res->attr_bitmask)) != 0) 4150 goto xdr_error; 4151 if ((status = decode_attr_fh_expire_type(xdr, bitmap, 4152 &res->fh_expire_type)) != 0) 4153 goto xdr_error; 4154 if ((status = decode_attr_link_support(xdr, bitmap, &res->has_links)) != 0) 4155 goto xdr_error; 4156 if ((status = decode_attr_symlink_support(xdr, bitmap, &res->has_symlinks)) != 0) 4157 goto xdr_error; 4158 if ((status = decode_attr_aclsupport(xdr, bitmap, &res->acl_bitmask)) != 0) 4159 goto xdr_error; 4160 status = verify_attr_len(xdr, savep, attrlen); 4161 xdr_error: 4162 dprintk("%s: xdr returned %d!\n", __func__, -status); 4163 return status; 4164 } 4165 4166 static int decode_statfs(struct xdr_stream *xdr, struct nfs_fsstat *fsstat) 4167 { 4168 __be32 *savep; 4169 uint32_t attrlen, bitmap[3] = {0}; 4170 int status; 4171 4172 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) 4173 goto xdr_error; 4174 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) 4175 goto xdr_error; 4176 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) 4177 goto xdr_error; 4178 4179 if ((status = decode_attr_files_avail(xdr, bitmap, &fsstat->afiles)) != 0) 4180 goto xdr_error; 4181 if ((status = decode_attr_files_free(xdr, bitmap, &fsstat->ffiles)) != 0) 4182 goto xdr_error; 4183 if ((status = decode_attr_files_total(xdr, bitmap, &fsstat->tfiles)) != 0) 4184 goto xdr_error; 4185 if ((status = decode_attr_space_avail(xdr, bitmap, &fsstat->abytes)) != 0) 4186 goto xdr_error; 4187 if ((status = decode_attr_space_free(xdr, bitmap, &fsstat->fbytes)) != 0) 4188 goto xdr_error; 4189 if ((status = decode_attr_space_total(xdr, bitmap, &fsstat->tbytes)) != 0) 4190 goto xdr_error; 4191 4192 status = verify_attr_len(xdr, savep, attrlen); 4193 xdr_error: 4194 dprintk("%s: xdr returned %d!\n", __func__, -status); 4195 return status; 4196 } 4197 4198 static int decode_pathconf(struct xdr_stream *xdr, struct nfs_pathconf *pathconf) 4199 { 4200 __be32 *savep; 4201 uint32_t attrlen, bitmap[3] = {0}; 4202 int status; 4203 4204 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) 4205 goto xdr_error; 4206 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) 4207 goto xdr_error; 4208 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) 4209 goto xdr_error; 4210 4211 if ((status = decode_attr_maxlink(xdr, bitmap, &pathconf->max_link)) != 0) 4212 goto xdr_error; 4213 if ((status = decode_attr_maxname(xdr, bitmap, &pathconf->max_namelen)) != 0) 4214 goto xdr_error; 4215 4216 status = verify_attr_len(xdr, savep, attrlen); 4217 xdr_error: 4218 dprintk("%s: xdr returned %d!\n", __func__, -status); 4219 return status; 4220 } 4221 4222 static int decode_getfattr_attrs(struct xdr_stream *xdr, uint32_t *bitmap, 4223 struct nfs_fattr *fattr, struct nfs_fh *fh, 4224 struct nfs4_fs_locations *fs_loc, 4225 const struct nfs_server *server) 4226 { 4227 int status; 4228 umode_t fmode = 0; 4229 uint32_t type; 4230 int32_t err; 4231 4232 status = decode_attr_type(xdr, bitmap, &type); 4233 if (status < 0) 4234 goto xdr_error; 4235 fattr->mode = 0; 4236 if (status != 0) { 4237 fattr->mode |= nfs_type2fmt[type]; 4238 fattr->valid |= status; 4239 } 4240 4241 status = decode_attr_change(xdr, bitmap, &fattr->change_attr); 4242 if (status < 0) 4243 goto xdr_error; 4244 fattr->valid |= status; 4245 4246 status = decode_attr_size(xdr, bitmap, &fattr->size); 4247 if (status < 0) 4248 goto xdr_error; 4249 fattr->valid |= status; 4250 4251 status = decode_attr_fsid(xdr, bitmap, &fattr->fsid); 4252 if (status < 0) 4253 goto xdr_error; 4254 fattr->valid |= status; 4255 4256 err = 0; 4257 status = decode_attr_error(xdr, bitmap, &err); 4258 if (status < 0) 4259 goto xdr_error; 4260 if (err == -NFS4ERR_WRONGSEC) 4261 nfs_fixup_secinfo_attributes(fattr, fh); 4262 4263 status = decode_attr_filehandle(xdr, bitmap, fh); 4264 if (status < 0) 4265 goto xdr_error; 4266 4267 status = decode_attr_fileid(xdr, bitmap, &fattr->fileid); 4268 if (status < 0) 4269 goto xdr_error; 4270 fattr->valid |= status; 4271 4272 status = decode_attr_fs_locations(xdr, bitmap, fs_loc); 4273 if (status < 0) 4274 goto xdr_error; 4275 fattr->valid |= status; 4276 4277 status = decode_attr_mode(xdr, bitmap, &fmode); 4278 if (status < 0) 4279 goto xdr_error; 4280 if (status != 0) { 4281 fattr->mode |= fmode; 4282 fattr->valid |= status; 4283 } 4284 4285 status = decode_attr_nlink(xdr, bitmap, &fattr->nlink); 4286 if (status < 0) 4287 goto xdr_error; 4288 fattr->valid |= status; 4289 4290 status = decode_attr_owner(xdr, bitmap, server, &fattr->uid, fattr->owner_name); 4291 if (status < 0) 4292 goto xdr_error; 4293 fattr->valid |= status; 4294 4295 status = decode_attr_group(xdr, bitmap, server, &fattr->gid, fattr->group_name); 4296 if (status < 0) 4297 goto xdr_error; 4298 fattr->valid |= status; 4299 4300 status = decode_attr_rdev(xdr, bitmap, &fattr->rdev); 4301 if (status < 0) 4302 goto xdr_error; 4303 fattr->valid |= status; 4304 4305 status = decode_attr_space_used(xdr, bitmap, &fattr->du.nfs3.used); 4306 if (status < 0) 4307 goto xdr_error; 4308 fattr->valid |= status; 4309 4310 status = decode_attr_time_access(xdr, bitmap, &fattr->atime); 4311 if (status < 0) 4312 goto xdr_error; 4313 fattr->valid |= status; 4314 4315 status = decode_attr_time_metadata(xdr, bitmap, &fattr->ctime); 4316 if (status < 0) 4317 goto xdr_error; 4318 fattr->valid |= status; 4319 4320 status = decode_attr_time_modify(xdr, bitmap, &fattr->mtime); 4321 if (status < 0) 4322 goto xdr_error; 4323 fattr->valid |= status; 4324 4325 status = decode_attr_mounted_on_fileid(xdr, bitmap, &fattr->mounted_on_fileid); 4326 if (status < 0) 4327 goto xdr_error; 4328 fattr->valid |= status; 4329 4330 xdr_error: 4331 dprintk("%s: xdr returned %d\n", __func__, -status); 4332 return status; 4333 } 4334 4335 static int decode_getfattr_generic(struct xdr_stream *xdr, struct nfs_fattr *fattr, 4336 struct nfs_fh *fh, struct nfs4_fs_locations *fs_loc, 4337 const struct nfs_server *server) 4338 { 4339 __be32 *savep; 4340 uint32_t attrlen, 4341 bitmap[3] = {0}; 4342 int status; 4343 4344 status = decode_op_hdr(xdr, OP_GETATTR); 4345 if (status < 0) 4346 goto xdr_error; 4347 4348 status = decode_attr_bitmap(xdr, bitmap); 4349 if (status < 0) 4350 goto xdr_error; 4351 4352 status = decode_attr_length(xdr, &attrlen, &savep); 4353 if (status < 0) 4354 goto xdr_error; 4355 4356 status = decode_getfattr_attrs(xdr, bitmap, fattr, fh, fs_loc, server); 4357 if (status < 0) 4358 goto xdr_error; 4359 4360 status = verify_attr_len(xdr, savep, attrlen); 4361 xdr_error: 4362 dprintk("%s: xdr returned %d\n", __func__, -status); 4363 return status; 4364 } 4365 4366 static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr, 4367 const struct nfs_server *server) 4368 { 4369 return decode_getfattr_generic(xdr, fattr, NULL, NULL, server); 4370 } 4371 4372 /* 4373 * Decode potentially multiple layout types. Currently we only support 4374 * one layout driver per file system. 4375 */ 4376 static int decode_first_pnfs_layout_type(struct xdr_stream *xdr, 4377 uint32_t *layouttype) 4378 { 4379 uint32_t *p; 4380 int num; 4381 4382 p = xdr_inline_decode(xdr, 4); 4383 if (unlikely(!p)) 4384 goto out_overflow; 4385 num = be32_to_cpup(p); 4386 4387 /* pNFS is not supported by the underlying file system */ 4388 if (num == 0) { 4389 *layouttype = 0; 4390 return 0; 4391 } 4392 if (num > 1) 4393 printk(KERN_INFO "NFS: %s: Warning: Multiple pNFS layout " 4394 "drivers per filesystem not supported\n", __func__); 4395 4396 /* Decode and set first layout type, move xdr->p past unused types */ 4397 p = xdr_inline_decode(xdr, num * 4); 4398 if (unlikely(!p)) 4399 goto out_overflow; 4400 *layouttype = be32_to_cpup(p); 4401 return 0; 4402 out_overflow: 4403 print_overflow_msg(__func__, xdr); 4404 return -EIO; 4405 } 4406 4407 /* 4408 * The type of file system exported. 4409 * Note we must ensure that layouttype is set in any non-error case. 4410 */ 4411 static int decode_attr_pnfstype(struct xdr_stream *xdr, uint32_t *bitmap, 4412 uint32_t *layouttype) 4413 { 4414 int status = 0; 4415 4416 dprintk("%s: bitmap is %x\n", __func__, bitmap[1]); 4417 if (unlikely(bitmap[1] & (FATTR4_WORD1_FS_LAYOUT_TYPES - 1U))) 4418 return -EIO; 4419 if (bitmap[1] & FATTR4_WORD1_FS_LAYOUT_TYPES) { 4420 status = decode_first_pnfs_layout_type(xdr, layouttype); 4421 bitmap[1] &= ~FATTR4_WORD1_FS_LAYOUT_TYPES; 4422 } else 4423 *layouttype = 0; 4424 return status; 4425 } 4426 4427 /* 4428 * The prefered block size for layout directed io 4429 */ 4430 static int decode_attr_layout_blksize(struct xdr_stream *xdr, uint32_t *bitmap, 4431 uint32_t *res) 4432 { 4433 __be32 *p; 4434 4435 dprintk("%s: bitmap is %x\n", __func__, bitmap[2]); 4436 *res = 0; 4437 if (bitmap[2] & FATTR4_WORD2_LAYOUT_BLKSIZE) { 4438 p = xdr_inline_decode(xdr, 4); 4439 if (unlikely(!p)) { 4440 print_overflow_msg(__func__, xdr); 4441 return -EIO; 4442 } 4443 *res = be32_to_cpup(p); 4444 bitmap[2] &= ~FATTR4_WORD2_LAYOUT_BLKSIZE; 4445 } 4446 return 0; 4447 } 4448 4449 static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo) 4450 { 4451 __be32 *savep; 4452 uint32_t attrlen, bitmap[3]; 4453 int status; 4454 4455 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) 4456 goto xdr_error; 4457 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) 4458 goto xdr_error; 4459 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) 4460 goto xdr_error; 4461 4462 fsinfo->rtmult = fsinfo->wtmult = 512; /* ??? */ 4463 4464 if ((status = decode_attr_lease_time(xdr, bitmap, &fsinfo->lease_time)) != 0) 4465 goto xdr_error; 4466 if ((status = decode_attr_maxfilesize(xdr, bitmap, &fsinfo->maxfilesize)) != 0) 4467 goto xdr_error; 4468 if ((status = decode_attr_maxread(xdr, bitmap, &fsinfo->rtmax)) != 0) 4469 goto xdr_error; 4470 fsinfo->rtpref = fsinfo->dtpref = fsinfo->rtmax; 4471 if ((status = decode_attr_maxwrite(xdr, bitmap, &fsinfo->wtmax)) != 0) 4472 goto xdr_error; 4473 fsinfo->wtpref = fsinfo->wtmax; 4474 status = decode_attr_time_delta(xdr, bitmap, &fsinfo->time_delta); 4475 if (status != 0) 4476 goto xdr_error; 4477 status = decode_attr_pnfstype(xdr, bitmap, &fsinfo->layouttype); 4478 if (status != 0) 4479 goto xdr_error; 4480 status = decode_attr_layout_blksize(xdr, bitmap, &fsinfo->blksize); 4481 if (status) 4482 goto xdr_error; 4483 4484 status = verify_attr_len(xdr, savep, attrlen); 4485 xdr_error: 4486 dprintk("%s: xdr returned %d!\n", __func__, -status); 4487 return status; 4488 } 4489 4490 static int decode_getfh(struct xdr_stream *xdr, struct nfs_fh *fh) 4491 { 4492 __be32 *p; 4493 uint32_t len; 4494 int status; 4495 4496 /* Zero handle first to allow comparisons */ 4497 memset(fh, 0, sizeof(*fh)); 4498 4499 status = decode_op_hdr(xdr, OP_GETFH); 4500 if (status) 4501 return status; 4502 4503 p = xdr_inline_decode(xdr, 4); 4504 if (unlikely(!p)) 4505 goto out_overflow; 4506 len = be32_to_cpup(p); 4507 if (len > NFS4_FHSIZE) 4508 return -EIO; 4509 fh->size = len; 4510 p = xdr_inline_decode(xdr, len); 4511 if (unlikely(!p)) 4512 goto out_overflow; 4513 memcpy(fh->data, p, len); 4514 return 0; 4515 out_overflow: 4516 print_overflow_msg(__func__, xdr); 4517 return -EIO; 4518 } 4519 4520 static int decode_link(struct xdr_stream *xdr, struct nfs4_change_info *cinfo) 4521 { 4522 int status; 4523 4524 status = decode_op_hdr(xdr, OP_LINK); 4525 if (status) 4526 return status; 4527 return decode_change_info(xdr, cinfo); 4528 } 4529 4530 /* 4531 * We create the owner, so we know a proper owner.id length is 4. 4532 */ 4533 static int decode_lock_denied (struct xdr_stream *xdr, struct file_lock *fl) 4534 { 4535 uint64_t offset, length, clientid; 4536 __be32 *p; 4537 uint32_t namelen, type; 4538 4539 p = xdr_inline_decode(xdr, 32); /* read 32 bytes */ 4540 if (unlikely(!p)) 4541 goto out_overflow; 4542 p = xdr_decode_hyper(p, &offset); /* read 2 8-byte long words */ 4543 p = xdr_decode_hyper(p, &length); 4544 type = be32_to_cpup(p++); /* 4 byte read */ 4545 if (fl != NULL) { /* manipulate file lock */ 4546 fl->fl_start = (loff_t)offset; 4547 fl->fl_end = fl->fl_start + (loff_t)length - 1; 4548 if (length == ~(uint64_t)0) 4549 fl->fl_end = OFFSET_MAX; 4550 fl->fl_type = F_WRLCK; 4551 if (type & 1) 4552 fl->fl_type = F_RDLCK; 4553 fl->fl_pid = 0; 4554 } 4555 p = xdr_decode_hyper(p, &clientid); /* read 8 bytes */ 4556 namelen = be32_to_cpup(p); /* read 4 bytes */ /* have read all 32 bytes now */ 4557 p = xdr_inline_decode(xdr, namelen); /* variable size field */ 4558 if (likely(p)) 4559 return -NFS4ERR_DENIED; 4560 out_overflow: 4561 print_overflow_msg(__func__, xdr); 4562 return -EIO; 4563 } 4564 4565 static int decode_lock(struct xdr_stream *xdr, struct nfs_lock_res *res) 4566 { 4567 int status; 4568 4569 status = decode_op_hdr(xdr, OP_LOCK); 4570 if (status == -EIO) 4571 goto out; 4572 if (status == 0) { 4573 status = decode_stateid(xdr, &res->stateid); 4574 if (unlikely(status)) 4575 goto out; 4576 } else if (status == -NFS4ERR_DENIED) 4577 status = decode_lock_denied(xdr, NULL); 4578 if (res->open_seqid != NULL) 4579 nfs_increment_open_seqid(status, res->open_seqid); 4580 nfs_increment_lock_seqid(status, res->lock_seqid); 4581 out: 4582 return status; 4583 } 4584 4585 static int decode_lockt(struct xdr_stream *xdr, struct nfs_lockt_res *res) 4586 { 4587 int status; 4588 status = decode_op_hdr(xdr, OP_LOCKT); 4589 if (status == -NFS4ERR_DENIED) 4590 return decode_lock_denied(xdr, res->denied); 4591 return status; 4592 } 4593 4594 static int decode_locku(struct xdr_stream *xdr, struct nfs_locku_res *res) 4595 { 4596 int status; 4597 4598 status = decode_op_hdr(xdr, OP_LOCKU); 4599 if (status != -EIO) 4600 nfs_increment_lock_seqid(status, res->seqid); 4601 if (status == 0) 4602 status = decode_stateid(xdr, &res->stateid); 4603 return status; 4604 } 4605 4606 static int decode_release_lockowner(struct xdr_stream *xdr) 4607 { 4608 return decode_op_hdr(xdr, OP_RELEASE_LOCKOWNER); 4609 } 4610 4611 static int decode_lookup(struct xdr_stream *xdr) 4612 { 4613 return decode_op_hdr(xdr, OP_LOOKUP); 4614 } 4615 4616 /* This is too sick! */ 4617 static int decode_space_limit(struct xdr_stream *xdr, u64 *maxsize) 4618 { 4619 __be32 *p; 4620 uint32_t limit_type, nblocks, blocksize; 4621 4622 p = xdr_inline_decode(xdr, 12); 4623 if (unlikely(!p)) 4624 goto out_overflow; 4625 limit_type = be32_to_cpup(p++); 4626 switch (limit_type) { 4627 case 1: 4628 xdr_decode_hyper(p, maxsize); 4629 break; 4630 case 2: 4631 nblocks = be32_to_cpup(p++); 4632 blocksize = be32_to_cpup(p); 4633 *maxsize = (uint64_t)nblocks * (uint64_t)blocksize; 4634 } 4635 return 0; 4636 out_overflow: 4637 print_overflow_msg(__func__, xdr); 4638 return -EIO; 4639 } 4640 4641 static int decode_delegation(struct xdr_stream *xdr, struct nfs_openres *res) 4642 { 4643 __be32 *p; 4644 uint32_t delegation_type; 4645 int status; 4646 4647 p = xdr_inline_decode(xdr, 4); 4648 if (unlikely(!p)) 4649 goto out_overflow; 4650 delegation_type = be32_to_cpup(p); 4651 if (delegation_type == NFS4_OPEN_DELEGATE_NONE) { 4652 res->delegation_type = 0; 4653 return 0; 4654 } 4655 status = decode_stateid(xdr, &res->delegation); 4656 if (unlikely(status)) 4657 return status; 4658 p = xdr_inline_decode(xdr, 4); 4659 if (unlikely(!p)) 4660 goto out_overflow; 4661 res->do_recall = be32_to_cpup(p); 4662 4663 switch (delegation_type) { 4664 case NFS4_OPEN_DELEGATE_READ: 4665 res->delegation_type = FMODE_READ; 4666 break; 4667 case NFS4_OPEN_DELEGATE_WRITE: 4668 res->delegation_type = FMODE_WRITE|FMODE_READ; 4669 if (decode_space_limit(xdr, &res->maxsize) < 0) 4670 return -EIO; 4671 } 4672 return decode_ace(xdr, NULL, res->server->nfs_client); 4673 out_overflow: 4674 print_overflow_msg(__func__, xdr); 4675 return -EIO; 4676 } 4677 4678 static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res) 4679 { 4680 __be32 *p; 4681 uint32_t savewords, bmlen, i; 4682 int status; 4683 4684 status = decode_op_hdr(xdr, OP_OPEN); 4685 if (status != -EIO) 4686 nfs_increment_open_seqid(status, res->seqid); 4687 if (!status) 4688 status = decode_stateid(xdr, &res->stateid); 4689 if (unlikely(status)) 4690 return status; 4691 4692 decode_change_info(xdr, &res->cinfo); 4693 4694 p = xdr_inline_decode(xdr, 8); 4695 if (unlikely(!p)) 4696 goto out_overflow; 4697 res->rflags = be32_to_cpup(p++); 4698 bmlen = be32_to_cpup(p); 4699 if (bmlen > 10) 4700 goto xdr_error; 4701 4702 p = xdr_inline_decode(xdr, bmlen << 2); 4703 if (unlikely(!p)) 4704 goto out_overflow; 4705 savewords = min_t(uint32_t, bmlen, NFS4_BITMAP_SIZE); 4706 for (i = 0; i < savewords; ++i) 4707 res->attrset[i] = be32_to_cpup(p++); 4708 for (; i < NFS4_BITMAP_SIZE; i++) 4709 res->attrset[i] = 0; 4710 4711 return decode_delegation(xdr, res); 4712 xdr_error: 4713 dprintk("%s: Bitmap too large! Length = %u\n", __func__, bmlen); 4714 return -EIO; 4715 out_overflow: 4716 print_overflow_msg(__func__, xdr); 4717 return -EIO; 4718 } 4719 4720 static int decode_open_confirm(struct xdr_stream *xdr, struct nfs_open_confirmres *res) 4721 { 4722 int status; 4723 4724 status = decode_op_hdr(xdr, OP_OPEN_CONFIRM); 4725 if (status != -EIO) 4726 nfs_increment_open_seqid(status, res->seqid); 4727 if (!status) 4728 status = decode_stateid(xdr, &res->stateid); 4729 return status; 4730 } 4731 4732 static int decode_open_downgrade(struct xdr_stream *xdr, struct nfs_closeres *res) 4733 { 4734 int status; 4735 4736 status = decode_op_hdr(xdr, OP_OPEN_DOWNGRADE); 4737 if (status != -EIO) 4738 nfs_increment_open_seqid(status, res->seqid); 4739 if (!status) 4740 status = decode_stateid(xdr, &res->stateid); 4741 return status; 4742 } 4743 4744 static int decode_putfh(struct xdr_stream *xdr) 4745 { 4746 return decode_op_hdr(xdr, OP_PUTFH); 4747 } 4748 4749 static int decode_putrootfh(struct xdr_stream *xdr) 4750 { 4751 return decode_op_hdr(xdr, OP_PUTROOTFH); 4752 } 4753 4754 static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs_readres *res) 4755 { 4756 struct kvec *iov = req->rq_rcv_buf.head; 4757 __be32 *p; 4758 uint32_t count, eof, recvd, hdrlen; 4759 int status; 4760 4761 status = decode_op_hdr(xdr, OP_READ); 4762 if (status) 4763 return status; 4764 p = xdr_inline_decode(xdr, 8); 4765 if (unlikely(!p)) 4766 goto out_overflow; 4767 eof = be32_to_cpup(p++); 4768 count = be32_to_cpup(p); 4769 hdrlen = (u8 *) xdr->p - (u8 *) iov->iov_base; 4770 recvd = req->rq_rcv_buf.len - hdrlen; 4771 if (count > recvd) { 4772 dprintk("NFS: server cheating in read reply: " 4773 "count %u > recvd %u\n", count, recvd); 4774 count = recvd; 4775 eof = 0; 4776 } 4777 xdr_read_pages(xdr, count); 4778 res->eof = eof; 4779 res->count = count; 4780 return 0; 4781 out_overflow: 4782 print_overflow_msg(__func__, xdr); 4783 return -EIO; 4784 } 4785 4786 static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs4_readdir_res *readdir) 4787 { 4788 struct xdr_buf *rcvbuf = &req->rq_rcv_buf; 4789 struct kvec *iov = rcvbuf->head; 4790 size_t hdrlen; 4791 u32 recvd, pglen = rcvbuf->page_len; 4792 int status; 4793 __be32 verf[2]; 4794 4795 status = decode_op_hdr(xdr, OP_READDIR); 4796 if (!status) 4797 status = decode_verifier(xdr, readdir->verifier.data); 4798 if (unlikely(status)) 4799 return status; 4800 memcpy(verf, readdir->verifier.data, sizeof(verf)); 4801 dprintk("%s: verifier = %08x:%08x\n", 4802 __func__, verf[0], verf[1]); 4803 4804 hdrlen = (char *) xdr->p - (char *) iov->iov_base; 4805 recvd = rcvbuf->len - hdrlen; 4806 if (pglen > recvd) 4807 pglen = recvd; 4808 xdr_read_pages(xdr, pglen); 4809 4810 4811 return pglen; 4812 } 4813 4814 static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req) 4815 { 4816 struct xdr_buf *rcvbuf = &req->rq_rcv_buf; 4817 struct kvec *iov = rcvbuf->head; 4818 size_t hdrlen; 4819 u32 len, recvd; 4820 __be32 *p; 4821 int status; 4822 4823 status = decode_op_hdr(xdr, OP_READLINK); 4824 if (status) 4825 return status; 4826 4827 /* Convert length of symlink */ 4828 p = xdr_inline_decode(xdr, 4); 4829 if (unlikely(!p)) 4830 goto out_overflow; 4831 len = be32_to_cpup(p); 4832 if (len >= rcvbuf->page_len || len <= 0) { 4833 dprintk("nfs: server returned giant symlink!\n"); 4834 return -ENAMETOOLONG; 4835 } 4836 hdrlen = (char *) xdr->p - (char *) iov->iov_base; 4837 recvd = req->rq_rcv_buf.len - hdrlen; 4838 if (recvd < len) { 4839 dprintk("NFS: server cheating in readlink reply: " 4840 "count %u > recvd %u\n", len, recvd); 4841 return -EIO; 4842 } 4843 xdr_read_pages(xdr, len); 4844 /* 4845 * The XDR encode routine has set things up so that 4846 * the link text will be copied directly into the 4847 * buffer. We just have to do overflow-checking, 4848 * and and null-terminate the text (the VFS expects 4849 * null-termination). 4850 */ 4851 xdr_terminate_string(rcvbuf, len); 4852 return 0; 4853 out_overflow: 4854 print_overflow_msg(__func__, xdr); 4855 return -EIO; 4856 } 4857 4858 static int decode_remove(struct xdr_stream *xdr, struct nfs4_change_info *cinfo) 4859 { 4860 int status; 4861 4862 status = decode_op_hdr(xdr, OP_REMOVE); 4863 if (status) 4864 goto out; 4865 status = decode_change_info(xdr, cinfo); 4866 out: 4867 return status; 4868 } 4869 4870 static int decode_rename(struct xdr_stream *xdr, struct nfs4_change_info *old_cinfo, 4871 struct nfs4_change_info *new_cinfo) 4872 { 4873 int status; 4874 4875 status = decode_op_hdr(xdr, OP_RENAME); 4876 if (status) 4877 goto out; 4878 if ((status = decode_change_info(xdr, old_cinfo))) 4879 goto out; 4880 status = decode_change_info(xdr, new_cinfo); 4881 out: 4882 return status; 4883 } 4884 4885 static int decode_renew(struct xdr_stream *xdr) 4886 { 4887 return decode_op_hdr(xdr, OP_RENEW); 4888 } 4889 4890 static int 4891 decode_restorefh(struct xdr_stream *xdr) 4892 { 4893 return decode_op_hdr(xdr, OP_RESTOREFH); 4894 } 4895 4896 static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req, 4897 struct nfs_getaclres *res) 4898 { 4899 __be32 *savep, *bm_p; 4900 uint32_t attrlen, 4901 bitmap[3] = {0}; 4902 struct kvec *iov = req->rq_rcv_buf.head; 4903 int status; 4904 4905 res->acl_len = 0; 4906 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) 4907 goto out; 4908 bm_p = xdr->p; 4909 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) 4910 goto out; 4911 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) 4912 goto out; 4913 4914 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACL - 1U))) 4915 return -EIO; 4916 if (likely(bitmap[0] & FATTR4_WORD0_ACL)) { 4917 size_t hdrlen; 4918 u32 recvd; 4919 4920 /* The bitmap (xdr len + bitmaps) and the attr xdr len words 4921 * are stored with the acl data to handle the problem of 4922 * variable length bitmaps.*/ 4923 xdr->p = bm_p; 4924 res->acl_data_offset = be32_to_cpup(bm_p) + 2; 4925 res->acl_data_offset <<= 2; 4926 4927 /* We ignore &savep and don't do consistency checks on 4928 * the attr length. Let userspace figure it out.... */ 4929 hdrlen = (u8 *)xdr->p - (u8 *)iov->iov_base; 4930 attrlen += res->acl_data_offset; 4931 recvd = req->rq_rcv_buf.len - hdrlen; 4932 if (attrlen > recvd) { 4933 if (res->acl_flags & NFS4_ACL_LEN_REQUEST) { 4934 /* getxattr interface called with a NULL buf */ 4935 res->acl_len = attrlen; 4936 goto out; 4937 } 4938 dprintk("NFS: acl reply: attrlen %u > recvd %u\n", 4939 attrlen, recvd); 4940 return -EINVAL; 4941 } 4942 xdr_read_pages(xdr, attrlen); 4943 res->acl_len = attrlen; 4944 } else 4945 status = -EOPNOTSUPP; 4946 4947 out: 4948 return status; 4949 } 4950 4951 static int 4952 decode_savefh(struct xdr_stream *xdr) 4953 { 4954 return decode_op_hdr(xdr, OP_SAVEFH); 4955 } 4956 4957 static int decode_setattr(struct xdr_stream *xdr) 4958 { 4959 __be32 *p; 4960 uint32_t bmlen; 4961 int status; 4962 4963 status = decode_op_hdr(xdr, OP_SETATTR); 4964 if (status) 4965 return status; 4966 p = xdr_inline_decode(xdr, 4); 4967 if (unlikely(!p)) 4968 goto out_overflow; 4969 bmlen = be32_to_cpup(p); 4970 p = xdr_inline_decode(xdr, bmlen << 2); 4971 if (likely(p)) 4972 return 0; 4973 out_overflow: 4974 print_overflow_msg(__func__, xdr); 4975 return -EIO; 4976 } 4977 4978 static int decode_setclientid(struct xdr_stream *xdr, struct nfs4_setclientid_res *res) 4979 { 4980 __be32 *p; 4981 uint32_t opnum; 4982 int32_t nfserr; 4983 4984 p = xdr_inline_decode(xdr, 8); 4985 if (unlikely(!p)) 4986 goto out_overflow; 4987 opnum = be32_to_cpup(p++); 4988 if (opnum != OP_SETCLIENTID) { 4989 dprintk("nfs: decode_setclientid: Server returned operation" 4990 " %d\n", opnum); 4991 return -EIO; 4992 } 4993 nfserr = be32_to_cpup(p); 4994 if (nfserr == NFS_OK) { 4995 p = xdr_inline_decode(xdr, 8 + NFS4_VERIFIER_SIZE); 4996 if (unlikely(!p)) 4997 goto out_overflow; 4998 p = xdr_decode_hyper(p, &res->clientid); 4999 memcpy(res->confirm.data, p, NFS4_VERIFIER_SIZE); 5000 } else if (nfserr == NFSERR_CLID_INUSE) { 5001 uint32_t len; 5002 5003 /* skip netid string */ 5004 p = xdr_inline_decode(xdr, 4); 5005 if (unlikely(!p)) 5006 goto out_overflow; 5007 len = be32_to_cpup(p); 5008 p = xdr_inline_decode(xdr, len); 5009 if (unlikely(!p)) 5010 goto out_overflow; 5011 5012 /* skip uaddr string */ 5013 p = xdr_inline_decode(xdr, 4); 5014 if (unlikely(!p)) 5015 goto out_overflow; 5016 len = be32_to_cpup(p); 5017 p = xdr_inline_decode(xdr, len); 5018 if (unlikely(!p)) 5019 goto out_overflow; 5020 return -NFSERR_CLID_INUSE; 5021 } else 5022 return nfs4_stat_to_errno(nfserr); 5023 5024 return 0; 5025 out_overflow: 5026 print_overflow_msg(__func__, xdr); 5027 return -EIO; 5028 } 5029 5030 static int decode_setclientid_confirm(struct xdr_stream *xdr) 5031 { 5032 return decode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM); 5033 } 5034 5035 static int decode_write(struct xdr_stream *xdr, struct nfs_writeres *res) 5036 { 5037 __be32 *p; 5038 int status; 5039 5040 status = decode_op_hdr(xdr, OP_WRITE); 5041 if (status) 5042 return status; 5043 5044 p = xdr_inline_decode(xdr, 16); 5045 if (unlikely(!p)) 5046 goto out_overflow; 5047 res->count = be32_to_cpup(p++); 5048 res->verf->committed = be32_to_cpup(p++); 5049 memcpy(res->verf->verifier, p, NFS4_VERIFIER_SIZE); 5050 return 0; 5051 out_overflow: 5052 print_overflow_msg(__func__, xdr); 5053 return -EIO; 5054 } 5055 5056 static int decode_delegreturn(struct xdr_stream *xdr) 5057 { 5058 return decode_op_hdr(xdr, OP_DELEGRETURN); 5059 } 5060 5061 static int decode_secinfo_gss(struct xdr_stream *xdr, struct nfs4_secinfo_flavor *flavor) 5062 { 5063 __be32 *p; 5064 5065 p = xdr_inline_decode(xdr, 4); 5066 if (unlikely(!p)) 5067 goto out_overflow; 5068 flavor->gss.sec_oid4.len = be32_to_cpup(p); 5069 if (flavor->gss.sec_oid4.len > GSS_OID_MAX_LEN) 5070 goto out_err; 5071 5072 p = xdr_inline_decode(xdr, flavor->gss.sec_oid4.len); 5073 if (unlikely(!p)) 5074 goto out_overflow; 5075 memcpy(flavor->gss.sec_oid4.data, p, flavor->gss.sec_oid4.len); 5076 5077 p = xdr_inline_decode(xdr, 8); 5078 if (unlikely(!p)) 5079 goto out_overflow; 5080 flavor->gss.qop4 = be32_to_cpup(p++); 5081 flavor->gss.service = be32_to_cpup(p); 5082 5083 return 0; 5084 5085 out_overflow: 5086 print_overflow_msg(__func__, xdr); 5087 return -EIO; 5088 out_err: 5089 return -EINVAL; 5090 } 5091 5092 static int decode_secinfo(struct xdr_stream *xdr, struct nfs4_secinfo_res *res) 5093 { 5094 struct nfs4_secinfo_flavor *sec_flavor; 5095 int status; 5096 __be32 *p; 5097 int i, num_flavors; 5098 5099 status = decode_op_hdr(xdr, OP_SECINFO); 5100 if (status) 5101 goto out; 5102 p = xdr_inline_decode(xdr, 4); 5103 if (unlikely(!p)) 5104 goto out_overflow; 5105 5106 res->flavors->num_flavors = 0; 5107 num_flavors = be32_to_cpup(p); 5108 5109 for (i = 0; i < num_flavors; i++) { 5110 sec_flavor = &res->flavors->flavors[i]; 5111 if ((char *)&sec_flavor[1] - (char *)res->flavors > PAGE_SIZE) 5112 break; 5113 5114 p = xdr_inline_decode(xdr, 4); 5115 if (unlikely(!p)) 5116 goto out_overflow; 5117 sec_flavor->flavor = be32_to_cpup(p); 5118 5119 if (sec_flavor->flavor == RPC_AUTH_GSS) { 5120 status = decode_secinfo_gss(xdr, sec_flavor); 5121 if (status) 5122 goto out; 5123 } 5124 res->flavors->num_flavors++; 5125 } 5126 5127 out: 5128 return status; 5129 out_overflow: 5130 print_overflow_msg(__func__, xdr); 5131 return -EIO; 5132 } 5133 5134 #if defined(CONFIG_NFS_V4_1) 5135 static int decode_exchange_id(struct xdr_stream *xdr, 5136 struct nfs41_exchange_id_res *res) 5137 { 5138 __be32 *p; 5139 uint32_t dummy; 5140 char *dummy_str; 5141 int status; 5142 struct nfs_client *clp = res->client; 5143 uint32_t impl_id_count; 5144 5145 status = decode_op_hdr(xdr, OP_EXCHANGE_ID); 5146 if (status) 5147 return status; 5148 5149 p = xdr_inline_decode(xdr, 8); 5150 if (unlikely(!p)) 5151 goto out_overflow; 5152 xdr_decode_hyper(p, &clp->cl_clientid); 5153 p = xdr_inline_decode(xdr, 12); 5154 if (unlikely(!p)) 5155 goto out_overflow; 5156 clp->cl_seqid = be32_to_cpup(p++); 5157 clp->cl_exchange_flags = be32_to_cpup(p++); 5158 5159 /* We ask for SP4_NONE */ 5160 dummy = be32_to_cpup(p); 5161 if (dummy != SP4_NONE) 5162 return -EIO; 5163 5164 /* Throw away minor_id */ 5165 p = xdr_inline_decode(xdr, 8); 5166 if (unlikely(!p)) 5167 goto out_overflow; 5168 5169 /* Throw away Major id */ 5170 status = decode_opaque_inline(xdr, &dummy, &dummy_str); 5171 if (unlikely(status)) 5172 return status; 5173 5174 /* Save server_scope */ 5175 status = decode_opaque_inline(xdr, &dummy, &dummy_str); 5176 if (unlikely(status)) 5177 return status; 5178 5179 if (unlikely(dummy > NFS4_OPAQUE_LIMIT)) 5180 return -EIO; 5181 5182 memcpy(res->server_scope->server_scope, dummy_str, dummy); 5183 res->server_scope->server_scope_sz = dummy; 5184 5185 /* Implementation Id */ 5186 p = xdr_inline_decode(xdr, 4); 5187 if (unlikely(!p)) 5188 goto out_overflow; 5189 impl_id_count = be32_to_cpup(p++); 5190 5191 if (impl_id_count) { 5192 /* nii_domain */ 5193 status = decode_opaque_inline(xdr, &dummy, &dummy_str); 5194 if (unlikely(status)) 5195 return status; 5196 if (unlikely(dummy > NFS4_OPAQUE_LIMIT)) 5197 return -EIO; 5198 memcpy(res->impl_id->domain, dummy_str, dummy); 5199 5200 /* nii_name */ 5201 status = decode_opaque_inline(xdr, &dummy, &dummy_str); 5202 if (unlikely(status)) 5203 return status; 5204 if (unlikely(dummy > NFS4_OPAQUE_LIMIT)) 5205 return -EIO; 5206 memcpy(res->impl_id->name, dummy_str, dummy); 5207 5208 /* nii_date */ 5209 p = xdr_inline_decode(xdr, 12); 5210 if (unlikely(!p)) 5211 goto out_overflow; 5212 p = xdr_decode_hyper(p, &res->impl_id->date.seconds); 5213 res->impl_id->date.nseconds = be32_to_cpup(p); 5214 5215 /* if there's more than one entry, ignore the rest */ 5216 } 5217 return 0; 5218 out_overflow: 5219 print_overflow_msg(__func__, xdr); 5220 return -EIO; 5221 } 5222 5223 static int decode_chan_attrs(struct xdr_stream *xdr, 5224 struct nfs4_channel_attrs *attrs) 5225 { 5226 __be32 *p; 5227 u32 nr_attrs, val; 5228 5229 p = xdr_inline_decode(xdr, 28); 5230 if (unlikely(!p)) 5231 goto out_overflow; 5232 val = be32_to_cpup(p++); /* headerpadsz */ 5233 if (val) 5234 return -EINVAL; /* no support for header padding yet */ 5235 attrs->max_rqst_sz = be32_to_cpup(p++); 5236 attrs->max_resp_sz = be32_to_cpup(p++); 5237 attrs->max_resp_sz_cached = be32_to_cpup(p++); 5238 attrs->max_ops = be32_to_cpup(p++); 5239 attrs->max_reqs = be32_to_cpup(p++); 5240 nr_attrs = be32_to_cpup(p); 5241 if (unlikely(nr_attrs > 1)) { 5242 printk(KERN_WARNING "NFS: %s: Invalid rdma channel attrs " 5243 "count %u\n", __func__, nr_attrs); 5244 return -EINVAL; 5245 } 5246 if (nr_attrs == 1) { 5247 p = xdr_inline_decode(xdr, 4); /* skip rdma_attrs */ 5248 if (unlikely(!p)) 5249 goto out_overflow; 5250 } 5251 return 0; 5252 out_overflow: 5253 print_overflow_msg(__func__, xdr); 5254 return -EIO; 5255 } 5256 5257 static int decode_sessionid(struct xdr_stream *xdr, struct nfs4_sessionid *sid) 5258 { 5259 return decode_opaque_fixed(xdr, sid->data, NFS4_MAX_SESSIONID_LEN); 5260 } 5261 5262 static int decode_create_session(struct xdr_stream *xdr, 5263 struct nfs41_create_session_res *res) 5264 { 5265 __be32 *p; 5266 int status; 5267 struct nfs_client *clp = res->client; 5268 struct nfs4_session *session = clp->cl_session; 5269 5270 status = decode_op_hdr(xdr, OP_CREATE_SESSION); 5271 if (!status) 5272 status = decode_sessionid(xdr, &session->sess_id); 5273 if (unlikely(status)) 5274 return status; 5275 5276 /* seqid, flags */ 5277 p = xdr_inline_decode(xdr, 8); 5278 if (unlikely(!p)) 5279 goto out_overflow; 5280 clp->cl_seqid = be32_to_cpup(p++); 5281 session->flags = be32_to_cpup(p); 5282 5283 /* Channel attributes */ 5284 status = decode_chan_attrs(xdr, &session->fc_attrs); 5285 if (!status) 5286 status = decode_chan_attrs(xdr, &session->bc_attrs); 5287 return status; 5288 out_overflow: 5289 print_overflow_msg(__func__, xdr); 5290 return -EIO; 5291 } 5292 5293 static int decode_destroy_session(struct xdr_stream *xdr, void *dummy) 5294 { 5295 return decode_op_hdr(xdr, OP_DESTROY_SESSION); 5296 } 5297 5298 static int decode_reclaim_complete(struct xdr_stream *xdr, void *dummy) 5299 { 5300 return decode_op_hdr(xdr, OP_RECLAIM_COMPLETE); 5301 } 5302 #endif /* CONFIG_NFS_V4_1 */ 5303 5304 static int decode_sequence(struct xdr_stream *xdr, 5305 struct nfs4_sequence_res *res, 5306 struct rpc_rqst *rqstp) 5307 { 5308 #if defined(CONFIG_NFS_V4_1) 5309 struct nfs4_sessionid id; 5310 u32 dummy; 5311 int status; 5312 __be32 *p; 5313 5314 if (!res->sr_session) 5315 return 0; 5316 5317 status = decode_op_hdr(xdr, OP_SEQUENCE); 5318 if (!status) 5319 status = decode_sessionid(xdr, &id); 5320 if (unlikely(status)) 5321 goto out_err; 5322 5323 /* 5324 * If the server returns different values for sessionID, slotID or 5325 * sequence number, the server is looney tunes. 5326 */ 5327 status = -EREMOTEIO; 5328 5329 if (memcmp(id.data, res->sr_session->sess_id.data, 5330 NFS4_MAX_SESSIONID_LEN)) { 5331 dprintk("%s Invalid session id\n", __func__); 5332 goto out_err; 5333 } 5334 5335 p = xdr_inline_decode(xdr, 20); 5336 if (unlikely(!p)) 5337 goto out_overflow; 5338 5339 /* seqid */ 5340 dummy = be32_to_cpup(p++); 5341 if (dummy != res->sr_slot->seq_nr) { 5342 dprintk("%s Invalid sequence number\n", __func__); 5343 goto out_err; 5344 } 5345 /* slot id */ 5346 dummy = be32_to_cpup(p++); 5347 if (dummy != res->sr_slot - res->sr_session->fc_slot_table.slots) { 5348 dprintk("%s Invalid slot id\n", __func__); 5349 goto out_err; 5350 } 5351 /* highest slot id - currently not processed */ 5352 dummy = be32_to_cpup(p++); 5353 /* target highest slot id - currently not processed */ 5354 dummy = be32_to_cpup(p++); 5355 /* result flags */ 5356 res->sr_status_flags = be32_to_cpup(p); 5357 status = 0; 5358 out_err: 5359 res->sr_status = status; 5360 return status; 5361 out_overflow: 5362 print_overflow_msg(__func__, xdr); 5363 status = -EIO; 5364 goto out_err; 5365 #else /* CONFIG_NFS_V4_1 */ 5366 return 0; 5367 #endif /* CONFIG_NFS_V4_1 */ 5368 } 5369 5370 #if defined(CONFIG_NFS_V4_1) 5371 /* 5372 * TODO: Need to handle case when EOF != true; 5373 */ 5374 static int decode_getdevicelist(struct xdr_stream *xdr, 5375 struct pnfs_devicelist *res) 5376 { 5377 __be32 *p; 5378 int status, i; 5379 struct nfs_writeverf verftemp; 5380 5381 status = decode_op_hdr(xdr, OP_GETDEVICELIST); 5382 if (status) 5383 return status; 5384 5385 p = xdr_inline_decode(xdr, 8 + 8 + 4); 5386 if (unlikely(!p)) 5387 goto out_overflow; 5388 5389 /* TODO: Skip cookie for now */ 5390 p += 2; 5391 5392 /* Read verifier */ 5393 p = xdr_decode_opaque_fixed(p, verftemp.verifier, NFS4_VERIFIER_SIZE); 5394 5395 res->num_devs = be32_to_cpup(p); 5396 5397 dprintk("%s: num_dev %d\n", __func__, res->num_devs); 5398 5399 if (res->num_devs > NFS4_PNFS_GETDEVLIST_MAXNUM) { 5400 printk(KERN_ERR "NFS: %s too many result dev_num %u\n", 5401 __func__, res->num_devs); 5402 return -EIO; 5403 } 5404 5405 p = xdr_inline_decode(xdr, 5406 res->num_devs * NFS4_DEVICEID4_SIZE + 4); 5407 if (unlikely(!p)) 5408 goto out_overflow; 5409 for (i = 0; i < res->num_devs; i++) 5410 p = xdr_decode_opaque_fixed(p, res->dev_id[i].data, 5411 NFS4_DEVICEID4_SIZE); 5412 res->eof = be32_to_cpup(p); 5413 return 0; 5414 out_overflow: 5415 print_overflow_msg(__func__, xdr); 5416 return -EIO; 5417 } 5418 5419 static int decode_getdeviceinfo(struct xdr_stream *xdr, 5420 struct pnfs_device *pdev) 5421 { 5422 __be32 *p; 5423 uint32_t len, type; 5424 int status; 5425 5426 status = decode_op_hdr(xdr, OP_GETDEVICEINFO); 5427 if (status) { 5428 if (status == -ETOOSMALL) { 5429 p = xdr_inline_decode(xdr, 4); 5430 if (unlikely(!p)) 5431 goto out_overflow; 5432 pdev->mincount = be32_to_cpup(p); 5433 dprintk("%s: Min count too small. mincnt = %u\n", 5434 __func__, pdev->mincount); 5435 } 5436 return status; 5437 } 5438 5439 p = xdr_inline_decode(xdr, 8); 5440 if (unlikely(!p)) 5441 goto out_overflow; 5442 type = be32_to_cpup(p++); 5443 if (type != pdev->layout_type) { 5444 dprintk("%s: layout mismatch req: %u pdev: %u\n", 5445 __func__, pdev->layout_type, type); 5446 return -EINVAL; 5447 } 5448 /* 5449 * Get the length of the opaque device_addr4. xdr_read_pages places 5450 * the opaque device_addr4 in the xdr_buf->pages (pnfs_device->pages) 5451 * and places the remaining xdr data in xdr_buf->tail 5452 */ 5453 pdev->mincount = be32_to_cpup(p); 5454 xdr_read_pages(xdr, pdev->mincount); /* include space for the length */ 5455 5456 /* Parse notification bitmap, verifying that it is zero. */ 5457 p = xdr_inline_decode(xdr, 4); 5458 if (unlikely(!p)) 5459 goto out_overflow; 5460 len = be32_to_cpup(p); 5461 if (len) { 5462 uint32_t i; 5463 5464 p = xdr_inline_decode(xdr, 4 * len); 5465 if (unlikely(!p)) 5466 goto out_overflow; 5467 for (i = 0; i < len; i++, p++) { 5468 if (be32_to_cpup(p)) { 5469 dprintk("%s: notifications not supported\n", 5470 __func__); 5471 return -EIO; 5472 } 5473 } 5474 } 5475 return 0; 5476 out_overflow: 5477 print_overflow_msg(__func__, xdr); 5478 return -EIO; 5479 } 5480 5481 static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req, 5482 struct nfs4_layoutget_res *res) 5483 { 5484 __be32 *p; 5485 int status; 5486 u32 layout_count; 5487 struct xdr_buf *rcvbuf = &req->rq_rcv_buf; 5488 struct kvec *iov = rcvbuf->head; 5489 u32 hdrlen, recvd; 5490 5491 status = decode_op_hdr(xdr, OP_LAYOUTGET); 5492 if (status) 5493 return status; 5494 p = xdr_inline_decode(xdr, 4); 5495 if (unlikely(!p)) 5496 goto out_overflow; 5497 res->return_on_close = be32_to_cpup(p); 5498 decode_stateid(xdr, &res->stateid); 5499 p = xdr_inline_decode(xdr, 4); 5500 if (unlikely(!p)) 5501 goto out_overflow; 5502 layout_count = be32_to_cpup(p); 5503 if (!layout_count) { 5504 dprintk("%s: server responded with empty layout array\n", 5505 __func__); 5506 return -EINVAL; 5507 } 5508 5509 p = xdr_inline_decode(xdr, 28); 5510 if (unlikely(!p)) 5511 goto out_overflow; 5512 p = xdr_decode_hyper(p, &res->range.offset); 5513 p = xdr_decode_hyper(p, &res->range.length); 5514 res->range.iomode = be32_to_cpup(p++); 5515 res->type = be32_to_cpup(p++); 5516 res->layoutp->len = be32_to_cpup(p); 5517 5518 dprintk("%s roff:%lu rlen:%lu riomode:%d, lo_type:0x%x, lo.len:%d\n", 5519 __func__, 5520 (unsigned long)res->range.offset, 5521 (unsigned long)res->range.length, 5522 res->range.iomode, 5523 res->type, 5524 res->layoutp->len); 5525 5526 hdrlen = (u8 *) xdr->p - (u8 *) iov->iov_base; 5527 recvd = req->rq_rcv_buf.len - hdrlen; 5528 if (res->layoutp->len > recvd) { 5529 dprintk("NFS: server cheating in layoutget reply: " 5530 "layout len %u > recvd %u\n", 5531 res->layoutp->len, recvd); 5532 return -EINVAL; 5533 } 5534 5535 xdr_read_pages(xdr, res->layoutp->len); 5536 5537 if (layout_count > 1) { 5538 /* We only handle a length one array at the moment. Any 5539 * further entries are just ignored. Note that this means 5540 * the client may see a response that is less than the 5541 * minimum it requested. 5542 */ 5543 dprintk("%s: server responded with %d layouts, dropping tail\n", 5544 __func__, layout_count); 5545 } 5546 5547 return 0; 5548 out_overflow: 5549 print_overflow_msg(__func__, xdr); 5550 return -EIO; 5551 } 5552 5553 static int decode_layoutreturn(struct xdr_stream *xdr, 5554 struct nfs4_layoutreturn_res *res) 5555 { 5556 __be32 *p; 5557 int status; 5558 5559 status = decode_op_hdr(xdr, OP_LAYOUTRETURN); 5560 if (status) 5561 return status; 5562 p = xdr_inline_decode(xdr, 4); 5563 if (unlikely(!p)) 5564 goto out_overflow; 5565 res->lrs_present = be32_to_cpup(p); 5566 if (res->lrs_present) 5567 status = decode_stateid(xdr, &res->stateid); 5568 return status; 5569 out_overflow: 5570 print_overflow_msg(__func__, xdr); 5571 return -EIO; 5572 } 5573 5574 static int decode_layoutcommit(struct xdr_stream *xdr, 5575 struct rpc_rqst *req, 5576 struct nfs4_layoutcommit_res *res) 5577 { 5578 __be32 *p; 5579 __u32 sizechanged; 5580 int status; 5581 5582 status = decode_op_hdr(xdr, OP_LAYOUTCOMMIT); 5583 res->status = status; 5584 if (status) 5585 return status; 5586 5587 p = xdr_inline_decode(xdr, 4); 5588 if (unlikely(!p)) 5589 goto out_overflow; 5590 sizechanged = be32_to_cpup(p); 5591 5592 if (sizechanged) { 5593 /* throw away new size */ 5594 p = xdr_inline_decode(xdr, 8); 5595 if (unlikely(!p)) 5596 goto out_overflow; 5597 } 5598 return 0; 5599 out_overflow: 5600 print_overflow_msg(__func__, xdr); 5601 return -EIO; 5602 } 5603 5604 static int decode_test_stateid(struct xdr_stream *xdr, 5605 struct nfs41_test_stateid_res *res) 5606 { 5607 __be32 *p; 5608 int status; 5609 int num_res; 5610 5611 status = decode_op_hdr(xdr, OP_TEST_STATEID); 5612 if (status) 5613 return status; 5614 5615 p = xdr_inline_decode(xdr, 4); 5616 if (unlikely(!p)) 5617 goto out_overflow; 5618 num_res = be32_to_cpup(p++); 5619 if (num_res != 1) 5620 goto out; 5621 5622 p = xdr_inline_decode(xdr, 4); 5623 if (unlikely(!p)) 5624 goto out_overflow; 5625 res->status = be32_to_cpup(p++); 5626 5627 return status; 5628 out_overflow: 5629 print_overflow_msg(__func__, xdr); 5630 out: 5631 return -EIO; 5632 } 5633 5634 static int decode_free_stateid(struct xdr_stream *xdr, 5635 struct nfs41_free_stateid_res *res) 5636 { 5637 __be32 *p; 5638 int status; 5639 5640 status = decode_op_hdr(xdr, OP_FREE_STATEID); 5641 if (status) 5642 return status; 5643 5644 p = xdr_inline_decode(xdr, 4); 5645 if (unlikely(!p)) 5646 goto out_overflow; 5647 res->status = be32_to_cpup(p++); 5648 return res->status; 5649 out_overflow: 5650 print_overflow_msg(__func__, xdr); 5651 return -EIO; 5652 } 5653 #endif /* CONFIG_NFS_V4_1 */ 5654 5655 /* 5656 * END OF "GENERIC" DECODE ROUTINES. 5657 */ 5658 5659 /* 5660 * Decode OPEN_DOWNGRADE response 5661 */ 5662 static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp, 5663 struct xdr_stream *xdr, 5664 struct nfs_closeres *res) 5665 { 5666 struct compound_hdr hdr; 5667 int status; 5668 5669 status = decode_compound_hdr(xdr, &hdr); 5670 if (status) 5671 goto out; 5672 status = decode_sequence(xdr, &res->seq_res, rqstp); 5673 if (status) 5674 goto out; 5675 status = decode_putfh(xdr); 5676 if (status) 5677 goto out; 5678 status = decode_open_downgrade(xdr, res); 5679 if (status != 0) 5680 goto out; 5681 decode_getfattr(xdr, res->fattr, res->server); 5682 out: 5683 return status; 5684 } 5685 5686 /* 5687 * Decode ACCESS response 5688 */ 5689 static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 5690 struct nfs4_accessres *res) 5691 { 5692 struct compound_hdr hdr; 5693 int status; 5694 5695 status = decode_compound_hdr(xdr, &hdr); 5696 if (status) 5697 goto out; 5698 status = decode_sequence(xdr, &res->seq_res, rqstp); 5699 if (status) 5700 goto out; 5701 status = decode_putfh(xdr); 5702 if (status != 0) 5703 goto out; 5704 status = decode_access(xdr, res); 5705 if (status != 0) 5706 goto out; 5707 decode_getfattr(xdr, res->fattr, res->server); 5708 out: 5709 return status; 5710 } 5711 5712 /* 5713 * Decode LOOKUP response 5714 */ 5715 static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 5716 struct nfs4_lookup_res *res) 5717 { 5718 struct compound_hdr hdr; 5719 int status; 5720 5721 status = decode_compound_hdr(xdr, &hdr); 5722 if (status) 5723 goto out; 5724 status = decode_sequence(xdr, &res->seq_res, rqstp); 5725 if (status) 5726 goto out; 5727 status = decode_putfh(xdr); 5728 if (status) 5729 goto out; 5730 status = decode_lookup(xdr); 5731 if (status) 5732 goto out; 5733 status = decode_getfh(xdr, res->fh); 5734 if (status) 5735 goto out; 5736 status = decode_getfattr(xdr, res->fattr, res->server); 5737 out: 5738 return status; 5739 } 5740 5741 /* 5742 * Decode LOOKUP_ROOT response 5743 */ 5744 static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp, 5745 struct xdr_stream *xdr, 5746 struct nfs4_lookup_res *res) 5747 { 5748 struct compound_hdr hdr; 5749 int status; 5750 5751 status = decode_compound_hdr(xdr, &hdr); 5752 if (status) 5753 goto out; 5754 status = decode_sequence(xdr, &res->seq_res, rqstp); 5755 if (status) 5756 goto out; 5757 status = decode_putrootfh(xdr); 5758 if (status) 5759 goto out; 5760 status = decode_getfh(xdr, res->fh); 5761 if (status == 0) 5762 status = decode_getfattr(xdr, res->fattr, res->server); 5763 out: 5764 return status; 5765 } 5766 5767 /* 5768 * Decode REMOVE response 5769 */ 5770 static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 5771 struct nfs_removeres *res) 5772 { 5773 struct compound_hdr hdr; 5774 int status; 5775 5776 status = decode_compound_hdr(xdr, &hdr); 5777 if (status) 5778 goto out; 5779 status = decode_sequence(xdr, &res->seq_res, rqstp); 5780 if (status) 5781 goto out; 5782 status = decode_putfh(xdr); 5783 if (status) 5784 goto out; 5785 status = decode_remove(xdr, &res->cinfo); 5786 if (status) 5787 goto out; 5788 decode_getfattr(xdr, res->dir_attr, res->server); 5789 out: 5790 return status; 5791 } 5792 5793 /* 5794 * Decode RENAME response 5795 */ 5796 static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 5797 struct nfs_renameres *res) 5798 { 5799 struct compound_hdr hdr; 5800 int status; 5801 5802 status = decode_compound_hdr(xdr, &hdr); 5803 if (status) 5804 goto out; 5805 status = decode_sequence(xdr, &res->seq_res, rqstp); 5806 if (status) 5807 goto out; 5808 status = decode_putfh(xdr); 5809 if (status) 5810 goto out; 5811 status = decode_savefh(xdr); 5812 if (status) 5813 goto out; 5814 status = decode_putfh(xdr); 5815 if (status) 5816 goto out; 5817 status = decode_rename(xdr, &res->old_cinfo, &res->new_cinfo); 5818 if (status) 5819 goto out; 5820 /* Current FH is target directory */ 5821 if (decode_getfattr(xdr, res->new_fattr, res->server)) 5822 goto out; 5823 status = decode_restorefh(xdr); 5824 if (status) 5825 goto out; 5826 decode_getfattr(xdr, res->old_fattr, res->server); 5827 out: 5828 return status; 5829 } 5830 5831 /* 5832 * Decode LINK response 5833 */ 5834 static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 5835 struct nfs4_link_res *res) 5836 { 5837 struct compound_hdr hdr; 5838 int status; 5839 5840 status = decode_compound_hdr(xdr, &hdr); 5841 if (status) 5842 goto out; 5843 status = decode_sequence(xdr, &res->seq_res, rqstp); 5844 if (status) 5845 goto out; 5846 status = decode_putfh(xdr); 5847 if (status) 5848 goto out; 5849 status = decode_savefh(xdr); 5850 if (status) 5851 goto out; 5852 status = decode_putfh(xdr); 5853 if (status) 5854 goto out; 5855 status = decode_link(xdr, &res->cinfo); 5856 if (status) 5857 goto out; 5858 /* 5859 * Note order: OP_LINK leaves the directory as the current 5860 * filehandle. 5861 */ 5862 if (decode_getfattr(xdr, res->dir_attr, res->server)) 5863 goto out; 5864 status = decode_restorefh(xdr); 5865 if (status) 5866 goto out; 5867 decode_getfattr(xdr, res->fattr, res->server); 5868 out: 5869 return status; 5870 } 5871 5872 /* 5873 * Decode CREATE response 5874 */ 5875 static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 5876 struct nfs4_create_res *res) 5877 { 5878 struct compound_hdr hdr; 5879 int status; 5880 5881 status = decode_compound_hdr(xdr, &hdr); 5882 if (status) 5883 goto out; 5884 status = decode_sequence(xdr, &res->seq_res, rqstp); 5885 if (status) 5886 goto out; 5887 status = decode_putfh(xdr); 5888 if (status) 5889 goto out; 5890 status = decode_savefh(xdr); 5891 if (status) 5892 goto out; 5893 status = decode_create(xdr, &res->dir_cinfo); 5894 if (status) 5895 goto out; 5896 status = decode_getfh(xdr, res->fh); 5897 if (status) 5898 goto out; 5899 if (decode_getfattr(xdr, res->fattr, res->server)) 5900 goto out; 5901 status = decode_restorefh(xdr); 5902 if (status) 5903 goto out; 5904 decode_getfattr(xdr, res->dir_fattr, res->server); 5905 out: 5906 return status; 5907 } 5908 5909 /* 5910 * Decode SYMLINK response 5911 */ 5912 static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 5913 struct nfs4_create_res *res) 5914 { 5915 return nfs4_xdr_dec_create(rqstp, xdr, res); 5916 } 5917 5918 /* 5919 * Decode GETATTR response 5920 */ 5921 static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 5922 struct nfs4_getattr_res *res) 5923 { 5924 struct compound_hdr hdr; 5925 int status; 5926 5927 status = decode_compound_hdr(xdr, &hdr); 5928 if (status) 5929 goto out; 5930 status = decode_sequence(xdr, &res->seq_res, rqstp); 5931 if (status) 5932 goto out; 5933 status = decode_putfh(xdr); 5934 if (status) 5935 goto out; 5936 status = decode_getfattr(xdr, res->fattr, res->server); 5937 out: 5938 return status; 5939 } 5940 5941 /* 5942 * Encode an SETACL request 5943 */ 5944 static void nfs4_xdr_enc_setacl(struct rpc_rqst *req, struct xdr_stream *xdr, 5945 struct nfs_setaclargs *args) 5946 { 5947 struct compound_hdr hdr = { 5948 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 5949 }; 5950 5951 encode_compound_hdr(xdr, req, &hdr); 5952 encode_sequence(xdr, &args->seq_args, &hdr); 5953 encode_putfh(xdr, args->fh, &hdr); 5954 encode_setacl(xdr, args, &hdr); 5955 encode_nops(&hdr); 5956 } 5957 5958 /* 5959 * Decode SETACL response 5960 */ 5961 static int 5962 nfs4_xdr_dec_setacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 5963 struct nfs_setaclres *res) 5964 { 5965 struct compound_hdr hdr; 5966 int status; 5967 5968 status = decode_compound_hdr(xdr, &hdr); 5969 if (status) 5970 goto out; 5971 status = decode_sequence(xdr, &res->seq_res, rqstp); 5972 if (status) 5973 goto out; 5974 status = decode_putfh(xdr); 5975 if (status) 5976 goto out; 5977 status = decode_setattr(xdr); 5978 out: 5979 return status; 5980 } 5981 5982 /* 5983 * Decode GETACL response 5984 */ 5985 static int 5986 nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 5987 struct nfs_getaclres *res) 5988 { 5989 struct compound_hdr hdr; 5990 int status; 5991 5992 if (res->acl_scratch != NULL) { 5993 void *p = page_address(res->acl_scratch); 5994 xdr_set_scratch_buffer(xdr, p, PAGE_SIZE); 5995 } 5996 status = decode_compound_hdr(xdr, &hdr); 5997 if (status) 5998 goto out; 5999 status = decode_sequence(xdr, &res->seq_res, rqstp); 6000 if (status) 6001 goto out; 6002 status = decode_putfh(xdr); 6003 if (status) 6004 goto out; 6005 status = decode_getacl(xdr, rqstp, res); 6006 6007 out: 6008 return status; 6009 } 6010 6011 /* 6012 * Decode CLOSE response 6013 */ 6014 static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6015 struct nfs_closeres *res) 6016 { 6017 struct compound_hdr hdr; 6018 int status; 6019 6020 status = decode_compound_hdr(xdr, &hdr); 6021 if (status) 6022 goto out; 6023 status = decode_sequence(xdr, &res->seq_res, rqstp); 6024 if (status) 6025 goto out; 6026 status = decode_putfh(xdr); 6027 if (status) 6028 goto out; 6029 status = decode_close(xdr, res); 6030 if (status != 0) 6031 goto out; 6032 /* 6033 * Note: Server may do delete on close for this file 6034 * in which case the getattr call will fail with 6035 * an ESTALE error. Shouldn't be a problem, 6036 * though, since fattr->valid will remain unset. 6037 */ 6038 decode_getfattr(xdr, res->fattr, res->server); 6039 out: 6040 return status; 6041 } 6042 6043 /* 6044 * Decode OPEN response 6045 */ 6046 static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6047 struct nfs_openres *res) 6048 { 6049 struct compound_hdr hdr; 6050 int status; 6051 6052 status = decode_compound_hdr(xdr, &hdr); 6053 if (status) 6054 goto out; 6055 status = decode_sequence(xdr, &res->seq_res, rqstp); 6056 if (status) 6057 goto out; 6058 status = decode_putfh(xdr); 6059 if (status) 6060 goto out; 6061 status = decode_savefh(xdr); 6062 if (status) 6063 goto out; 6064 status = decode_open(xdr, res); 6065 if (status) 6066 goto out; 6067 if (decode_getfh(xdr, &res->fh) != 0) 6068 goto out; 6069 if (decode_getfattr(xdr, res->f_attr, res->server) != 0) 6070 goto out; 6071 if (decode_restorefh(xdr) != 0) 6072 goto out; 6073 decode_getfattr(xdr, res->dir_attr, res->server); 6074 out: 6075 return status; 6076 } 6077 6078 /* 6079 * Decode OPEN_CONFIRM response 6080 */ 6081 static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp, 6082 struct xdr_stream *xdr, 6083 struct nfs_open_confirmres *res) 6084 { 6085 struct compound_hdr hdr; 6086 int status; 6087 6088 status = decode_compound_hdr(xdr, &hdr); 6089 if (status) 6090 goto out; 6091 status = decode_putfh(xdr); 6092 if (status) 6093 goto out; 6094 status = decode_open_confirm(xdr, res); 6095 out: 6096 return status; 6097 } 6098 6099 /* 6100 * Decode OPEN response 6101 */ 6102 static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp, 6103 struct xdr_stream *xdr, 6104 struct nfs_openres *res) 6105 { 6106 struct compound_hdr hdr; 6107 int status; 6108 6109 status = decode_compound_hdr(xdr, &hdr); 6110 if (status) 6111 goto out; 6112 status = decode_sequence(xdr, &res->seq_res, rqstp); 6113 if (status) 6114 goto out; 6115 status = decode_putfh(xdr); 6116 if (status) 6117 goto out; 6118 status = decode_open(xdr, res); 6119 if (status) 6120 goto out; 6121 decode_getfattr(xdr, res->f_attr, res->server); 6122 out: 6123 return status; 6124 } 6125 6126 /* 6127 * Decode SETATTR response 6128 */ 6129 static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp, 6130 struct xdr_stream *xdr, 6131 struct nfs_setattrres *res) 6132 { 6133 struct compound_hdr hdr; 6134 int status; 6135 6136 status = decode_compound_hdr(xdr, &hdr); 6137 if (status) 6138 goto out; 6139 status = decode_sequence(xdr, &res->seq_res, rqstp); 6140 if (status) 6141 goto out; 6142 status = decode_putfh(xdr); 6143 if (status) 6144 goto out; 6145 status = decode_setattr(xdr); 6146 if (status) 6147 goto out; 6148 decode_getfattr(xdr, res->fattr, res->server); 6149 out: 6150 return status; 6151 } 6152 6153 /* 6154 * Decode LOCK response 6155 */ 6156 static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6157 struct nfs_lock_res *res) 6158 { 6159 struct compound_hdr hdr; 6160 int status; 6161 6162 status = decode_compound_hdr(xdr, &hdr); 6163 if (status) 6164 goto out; 6165 status = decode_sequence(xdr, &res->seq_res, rqstp); 6166 if (status) 6167 goto out; 6168 status = decode_putfh(xdr); 6169 if (status) 6170 goto out; 6171 status = decode_lock(xdr, res); 6172 out: 6173 return status; 6174 } 6175 6176 /* 6177 * Decode LOCKT response 6178 */ 6179 static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6180 struct nfs_lockt_res *res) 6181 { 6182 struct compound_hdr hdr; 6183 int status; 6184 6185 status = decode_compound_hdr(xdr, &hdr); 6186 if (status) 6187 goto out; 6188 status = decode_sequence(xdr, &res->seq_res, rqstp); 6189 if (status) 6190 goto out; 6191 status = decode_putfh(xdr); 6192 if (status) 6193 goto out; 6194 status = decode_lockt(xdr, res); 6195 out: 6196 return status; 6197 } 6198 6199 /* 6200 * Decode LOCKU response 6201 */ 6202 static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6203 struct nfs_locku_res *res) 6204 { 6205 struct compound_hdr hdr; 6206 int status; 6207 6208 status = decode_compound_hdr(xdr, &hdr); 6209 if (status) 6210 goto out; 6211 status = decode_sequence(xdr, &res->seq_res, rqstp); 6212 if (status) 6213 goto out; 6214 status = decode_putfh(xdr); 6215 if (status) 6216 goto out; 6217 status = decode_locku(xdr, res); 6218 out: 6219 return status; 6220 } 6221 6222 static int nfs4_xdr_dec_release_lockowner(struct rpc_rqst *rqstp, 6223 struct xdr_stream *xdr, void *dummy) 6224 { 6225 struct compound_hdr hdr; 6226 int status; 6227 6228 status = decode_compound_hdr(xdr, &hdr); 6229 if (!status) 6230 status = decode_release_lockowner(xdr); 6231 return status; 6232 } 6233 6234 /* 6235 * Decode READLINK response 6236 */ 6237 static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp, 6238 struct xdr_stream *xdr, 6239 struct nfs4_readlink_res *res) 6240 { 6241 struct compound_hdr hdr; 6242 int status; 6243 6244 status = decode_compound_hdr(xdr, &hdr); 6245 if (status) 6246 goto out; 6247 status = decode_sequence(xdr, &res->seq_res, rqstp); 6248 if (status) 6249 goto out; 6250 status = decode_putfh(xdr); 6251 if (status) 6252 goto out; 6253 status = decode_readlink(xdr, rqstp); 6254 out: 6255 return status; 6256 } 6257 6258 /* 6259 * Decode READDIR response 6260 */ 6261 static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6262 struct nfs4_readdir_res *res) 6263 { 6264 struct compound_hdr hdr; 6265 int status; 6266 6267 status = decode_compound_hdr(xdr, &hdr); 6268 if (status) 6269 goto out; 6270 status = decode_sequence(xdr, &res->seq_res, rqstp); 6271 if (status) 6272 goto out; 6273 status = decode_putfh(xdr); 6274 if (status) 6275 goto out; 6276 status = decode_readdir(xdr, rqstp, res); 6277 out: 6278 return status; 6279 } 6280 6281 /* 6282 * Decode Read response 6283 */ 6284 static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6285 struct nfs_readres *res) 6286 { 6287 struct compound_hdr hdr; 6288 int status; 6289 6290 status = decode_compound_hdr(xdr, &hdr); 6291 if (status) 6292 goto out; 6293 status = decode_sequence(xdr, &res->seq_res, rqstp); 6294 if (status) 6295 goto out; 6296 status = decode_putfh(xdr); 6297 if (status) 6298 goto out; 6299 status = decode_read(xdr, rqstp, res); 6300 if (!status) 6301 status = res->count; 6302 out: 6303 return status; 6304 } 6305 6306 /* 6307 * Decode WRITE response 6308 */ 6309 static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6310 struct nfs_writeres *res) 6311 { 6312 struct compound_hdr hdr; 6313 int status; 6314 6315 status = decode_compound_hdr(xdr, &hdr); 6316 if (status) 6317 goto out; 6318 status = decode_sequence(xdr, &res->seq_res, rqstp); 6319 if (status) 6320 goto out; 6321 status = decode_putfh(xdr); 6322 if (status) 6323 goto out; 6324 status = decode_write(xdr, res); 6325 if (status) 6326 goto out; 6327 if (res->fattr) 6328 decode_getfattr(xdr, res->fattr, res->server); 6329 if (!status) 6330 status = res->count; 6331 out: 6332 return status; 6333 } 6334 6335 /* 6336 * Decode COMMIT response 6337 */ 6338 static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6339 struct nfs_writeres *res) 6340 { 6341 struct compound_hdr hdr; 6342 int status; 6343 6344 status = decode_compound_hdr(xdr, &hdr); 6345 if (status) 6346 goto out; 6347 status = decode_sequence(xdr, &res->seq_res, rqstp); 6348 if (status) 6349 goto out; 6350 status = decode_putfh(xdr); 6351 if (status) 6352 goto out; 6353 status = decode_commit(xdr, res); 6354 if (status) 6355 goto out; 6356 if (res->fattr) 6357 decode_getfattr(xdr, res->fattr, res->server); 6358 out: 6359 return status; 6360 } 6361 6362 /* 6363 * Decode FSINFO response 6364 */ 6365 static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr, 6366 struct nfs4_fsinfo_res *res) 6367 { 6368 struct compound_hdr hdr; 6369 int status; 6370 6371 status = decode_compound_hdr(xdr, &hdr); 6372 if (!status) 6373 status = decode_sequence(xdr, &res->seq_res, req); 6374 if (!status) 6375 status = decode_putfh(xdr); 6376 if (!status) 6377 status = decode_fsinfo(xdr, res->fsinfo); 6378 return status; 6379 } 6380 6381 /* 6382 * Decode PATHCONF response 6383 */ 6384 static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr, 6385 struct nfs4_pathconf_res *res) 6386 { 6387 struct compound_hdr hdr; 6388 int status; 6389 6390 status = decode_compound_hdr(xdr, &hdr); 6391 if (!status) 6392 status = decode_sequence(xdr, &res->seq_res, req); 6393 if (!status) 6394 status = decode_putfh(xdr); 6395 if (!status) 6396 status = decode_pathconf(xdr, res->pathconf); 6397 return status; 6398 } 6399 6400 /* 6401 * Decode STATFS response 6402 */ 6403 static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, struct xdr_stream *xdr, 6404 struct nfs4_statfs_res *res) 6405 { 6406 struct compound_hdr hdr; 6407 int status; 6408 6409 status = decode_compound_hdr(xdr, &hdr); 6410 if (!status) 6411 status = decode_sequence(xdr, &res->seq_res, req); 6412 if (!status) 6413 status = decode_putfh(xdr); 6414 if (!status) 6415 status = decode_statfs(xdr, res->fsstat); 6416 return status; 6417 } 6418 6419 /* 6420 * Decode GETATTR_BITMAP response 6421 */ 6422 static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req, 6423 struct xdr_stream *xdr, 6424 struct nfs4_server_caps_res *res) 6425 { 6426 struct compound_hdr hdr; 6427 int status; 6428 6429 status = decode_compound_hdr(xdr, &hdr); 6430 if (status) 6431 goto out; 6432 status = decode_sequence(xdr, &res->seq_res, req); 6433 if (status) 6434 goto out; 6435 status = decode_putfh(xdr); 6436 if (status) 6437 goto out; 6438 status = decode_server_caps(xdr, res); 6439 out: 6440 return status; 6441 } 6442 6443 /* 6444 * Decode RENEW response 6445 */ 6446 static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6447 void *__unused) 6448 { 6449 struct compound_hdr hdr; 6450 int status; 6451 6452 status = decode_compound_hdr(xdr, &hdr); 6453 if (!status) 6454 status = decode_renew(xdr); 6455 return status; 6456 } 6457 6458 /* 6459 * Decode SETCLIENTID response 6460 */ 6461 static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req, 6462 struct xdr_stream *xdr, 6463 struct nfs4_setclientid_res *res) 6464 { 6465 struct compound_hdr hdr; 6466 int status; 6467 6468 status = decode_compound_hdr(xdr, &hdr); 6469 if (!status) 6470 status = decode_setclientid(xdr, res); 6471 return status; 6472 } 6473 6474 /* 6475 * Decode SETCLIENTID_CONFIRM response 6476 */ 6477 static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req, 6478 struct xdr_stream *xdr, 6479 struct nfs_fsinfo *fsinfo) 6480 { 6481 struct compound_hdr hdr; 6482 int status; 6483 6484 status = decode_compound_hdr(xdr, &hdr); 6485 if (!status) 6486 status = decode_setclientid_confirm(xdr); 6487 if (!status) 6488 status = decode_putrootfh(xdr); 6489 if (!status) 6490 status = decode_fsinfo(xdr, fsinfo); 6491 return status; 6492 } 6493 6494 /* 6495 * Decode DELEGRETURN response 6496 */ 6497 static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp, 6498 struct xdr_stream *xdr, 6499 struct nfs4_delegreturnres *res) 6500 { 6501 struct compound_hdr hdr; 6502 int status; 6503 6504 status = decode_compound_hdr(xdr, &hdr); 6505 if (status) 6506 goto out; 6507 status = decode_sequence(xdr, &res->seq_res, rqstp); 6508 if (status) 6509 goto out; 6510 status = decode_putfh(xdr); 6511 if (status != 0) 6512 goto out; 6513 status = decode_delegreturn(xdr); 6514 if (status != 0) 6515 goto out; 6516 decode_getfattr(xdr, res->fattr, res->server); 6517 out: 6518 return status; 6519 } 6520 6521 /* 6522 * Decode FS_LOCATIONS response 6523 */ 6524 static int nfs4_xdr_dec_fs_locations(struct rpc_rqst *req, 6525 struct xdr_stream *xdr, 6526 struct nfs4_fs_locations_res *res) 6527 { 6528 struct compound_hdr hdr; 6529 int status; 6530 6531 status = decode_compound_hdr(xdr, &hdr); 6532 if (status) 6533 goto out; 6534 status = decode_sequence(xdr, &res->seq_res, req); 6535 if (status) 6536 goto out; 6537 status = decode_putfh(xdr); 6538 if (status) 6539 goto out; 6540 status = decode_lookup(xdr); 6541 if (status) 6542 goto out; 6543 xdr_enter_page(xdr, PAGE_SIZE); 6544 status = decode_getfattr_generic(xdr, &res->fs_locations->fattr, 6545 NULL, res->fs_locations, 6546 res->fs_locations->server); 6547 out: 6548 return status; 6549 } 6550 6551 /* 6552 * Decode SECINFO response 6553 */ 6554 static int nfs4_xdr_dec_secinfo(struct rpc_rqst *rqstp, 6555 struct xdr_stream *xdr, 6556 struct nfs4_secinfo_res *res) 6557 { 6558 struct compound_hdr hdr; 6559 int status; 6560 6561 status = decode_compound_hdr(xdr, &hdr); 6562 if (status) 6563 goto out; 6564 status = decode_sequence(xdr, &res->seq_res, rqstp); 6565 if (status) 6566 goto out; 6567 status = decode_putfh(xdr); 6568 if (status) 6569 goto out; 6570 status = decode_secinfo(xdr, res); 6571 out: 6572 return status; 6573 } 6574 6575 #if defined(CONFIG_NFS_V4_1) 6576 /* 6577 * Decode EXCHANGE_ID response 6578 */ 6579 static int nfs4_xdr_dec_exchange_id(struct rpc_rqst *rqstp, 6580 struct xdr_stream *xdr, 6581 void *res) 6582 { 6583 struct compound_hdr hdr; 6584 int status; 6585 6586 status = decode_compound_hdr(xdr, &hdr); 6587 if (!status) 6588 status = decode_exchange_id(xdr, res); 6589 return status; 6590 } 6591 6592 /* 6593 * Decode CREATE_SESSION response 6594 */ 6595 static int nfs4_xdr_dec_create_session(struct rpc_rqst *rqstp, 6596 struct xdr_stream *xdr, 6597 struct nfs41_create_session_res *res) 6598 { 6599 struct compound_hdr hdr; 6600 int status; 6601 6602 status = decode_compound_hdr(xdr, &hdr); 6603 if (!status) 6604 status = decode_create_session(xdr, res); 6605 return status; 6606 } 6607 6608 /* 6609 * Decode DESTROY_SESSION response 6610 */ 6611 static int nfs4_xdr_dec_destroy_session(struct rpc_rqst *rqstp, 6612 struct xdr_stream *xdr, 6613 void *res) 6614 { 6615 struct compound_hdr hdr; 6616 int status; 6617 6618 status = decode_compound_hdr(xdr, &hdr); 6619 if (!status) 6620 status = decode_destroy_session(xdr, res); 6621 return status; 6622 } 6623 6624 /* 6625 * Decode SEQUENCE response 6626 */ 6627 static int nfs4_xdr_dec_sequence(struct rpc_rqst *rqstp, 6628 struct xdr_stream *xdr, 6629 struct nfs4_sequence_res *res) 6630 { 6631 struct compound_hdr hdr; 6632 int status; 6633 6634 status = decode_compound_hdr(xdr, &hdr); 6635 if (!status) 6636 status = decode_sequence(xdr, res, rqstp); 6637 return status; 6638 } 6639 6640 /* 6641 * Decode GET_LEASE_TIME response 6642 */ 6643 static int nfs4_xdr_dec_get_lease_time(struct rpc_rqst *rqstp, 6644 struct xdr_stream *xdr, 6645 struct nfs4_get_lease_time_res *res) 6646 { 6647 struct compound_hdr hdr; 6648 int status; 6649 6650 status = decode_compound_hdr(xdr, &hdr); 6651 if (!status) 6652 status = decode_sequence(xdr, &res->lr_seq_res, rqstp); 6653 if (!status) 6654 status = decode_putrootfh(xdr); 6655 if (!status) 6656 status = decode_fsinfo(xdr, res->lr_fsinfo); 6657 return status; 6658 } 6659 6660 /* 6661 * Decode RECLAIM_COMPLETE response 6662 */ 6663 static int nfs4_xdr_dec_reclaim_complete(struct rpc_rqst *rqstp, 6664 struct xdr_stream *xdr, 6665 struct nfs41_reclaim_complete_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->seq_res, rqstp); 6673 if (!status) 6674 status = decode_reclaim_complete(xdr, (void *)NULL); 6675 return status; 6676 } 6677 6678 /* 6679 * Decode GETDEVICELIST response 6680 */ 6681 static int nfs4_xdr_dec_getdevicelist(struct rpc_rqst *rqstp, 6682 struct xdr_stream *xdr, 6683 struct nfs4_getdevicelist_res *res) 6684 { 6685 struct compound_hdr hdr; 6686 int status; 6687 6688 dprintk("encoding getdevicelist!\n"); 6689 6690 status = decode_compound_hdr(xdr, &hdr); 6691 if (status != 0) 6692 goto out; 6693 status = decode_sequence(xdr, &res->seq_res, rqstp); 6694 if (status != 0) 6695 goto out; 6696 status = decode_putfh(xdr); 6697 if (status != 0) 6698 goto out; 6699 status = decode_getdevicelist(xdr, res->devlist); 6700 out: 6701 return status; 6702 } 6703 6704 /* 6705 * Decode GETDEVINFO response 6706 */ 6707 static int nfs4_xdr_dec_getdeviceinfo(struct rpc_rqst *rqstp, 6708 struct xdr_stream *xdr, 6709 struct nfs4_getdeviceinfo_res *res) 6710 { 6711 struct compound_hdr hdr; 6712 int status; 6713 6714 status = decode_compound_hdr(xdr, &hdr); 6715 if (status != 0) 6716 goto out; 6717 status = decode_sequence(xdr, &res->seq_res, rqstp); 6718 if (status != 0) 6719 goto out; 6720 status = decode_getdeviceinfo(xdr, res->pdev); 6721 out: 6722 return status; 6723 } 6724 6725 /* 6726 * Decode LAYOUTGET response 6727 */ 6728 static int nfs4_xdr_dec_layoutget(struct rpc_rqst *rqstp, 6729 struct xdr_stream *xdr, 6730 struct nfs4_layoutget_res *res) 6731 { 6732 struct compound_hdr hdr; 6733 int status; 6734 6735 status = decode_compound_hdr(xdr, &hdr); 6736 if (status) 6737 goto out; 6738 status = decode_sequence(xdr, &res->seq_res, rqstp); 6739 if (status) 6740 goto out; 6741 status = decode_putfh(xdr); 6742 if (status) 6743 goto out; 6744 status = decode_layoutget(xdr, rqstp, res); 6745 out: 6746 return status; 6747 } 6748 6749 /* 6750 * Decode LAYOUTRETURN response 6751 */ 6752 static int nfs4_xdr_dec_layoutreturn(struct rpc_rqst *rqstp, 6753 struct xdr_stream *xdr, 6754 struct nfs4_layoutreturn_res *res) 6755 { 6756 struct compound_hdr hdr; 6757 int status; 6758 6759 status = decode_compound_hdr(xdr, &hdr); 6760 if (status) 6761 goto out; 6762 status = decode_sequence(xdr, &res->seq_res, rqstp); 6763 if (status) 6764 goto out; 6765 status = decode_putfh(xdr); 6766 if (status) 6767 goto out; 6768 status = decode_layoutreturn(xdr, res); 6769 out: 6770 return status; 6771 } 6772 6773 /* 6774 * Decode LAYOUTCOMMIT response 6775 */ 6776 static int nfs4_xdr_dec_layoutcommit(struct rpc_rqst *rqstp, 6777 struct xdr_stream *xdr, 6778 struct nfs4_layoutcommit_res *res) 6779 { 6780 struct compound_hdr hdr; 6781 int status; 6782 6783 status = decode_compound_hdr(xdr, &hdr); 6784 if (status) 6785 goto out; 6786 status = decode_sequence(xdr, &res->seq_res, rqstp); 6787 if (status) 6788 goto out; 6789 status = decode_putfh(xdr); 6790 if (status) 6791 goto out; 6792 status = decode_layoutcommit(xdr, rqstp, res); 6793 if (status) 6794 goto out; 6795 decode_getfattr(xdr, res->fattr, res->server); 6796 out: 6797 return status; 6798 } 6799 6800 /* 6801 * Decode SECINFO_NO_NAME response 6802 */ 6803 static int nfs4_xdr_dec_secinfo_no_name(struct rpc_rqst *rqstp, 6804 struct xdr_stream *xdr, 6805 struct nfs4_secinfo_res *res) 6806 { 6807 struct compound_hdr hdr; 6808 int status; 6809 6810 status = decode_compound_hdr(xdr, &hdr); 6811 if (status) 6812 goto out; 6813 status = decode_sequence(xdr, &res->seq_res, rqstp); 6814 if (status) 6815 goto out; 6816 status = decode_putrootfh(xdr); 6817 if (status) 6818 goto out; 6819 status = decode_secinfo(xdr, res); 6820 out: 6821 return status; 6822 } 6823 6824 /* 6825 * Decode TEST_STATEID response 6826 */ 6827 static int nfs4_xdr_dec_test_stateid(struct rpc_rqst *rqstp, 6828 struct xdr_stream *xdr, 6829 struct nfs41_test_stateid_res *res) 6830 { 6831 struct compound_hdr hdr; 6832 int status; 6833 6834 status = decode_compound_hdr(xdr, &hdr); 6835 if (status) 6836 goto out; 6837 status = decode_sequence(xdr, &res->seq_res, rqstp); 6838 if (status) 6839 goto out; 6840 status = decode_test_stateid(xdr, res); 6841 out: 6842 return status; 6843 } 6844 6845 /* 6846 * Decode FREE_STATEID response 6847 */ 6848 static int nfs4_xdr_dec_free_stateid(struct rpc_rqst *rqstp, 6849 struct xdr_stream *xdr, 6850 struct nfs41_free_stateid_res *res) 6851 { 6852 struct compound_hdr hdr; 6853 int status; 6854 6855 status = decode_compound_hdr(xdr, &hdr); 6856 if (status) 6857 goto out; 6858 status = decode_sequence(xdr, &res->seq_res, rqstp); 6859 if (status) 6860 goto out; 6861 status = decode_free_stateid(xdr, res); 6862 out: 6863 return status; 6864 } 6865 #endif /* CONFIG_NFS_V4_1 */ 6866 6867 /** 6868 * nfs4_decode_dirent - Decode a single NFSv4 directory entry stored in 6869 * the local page cache. 6870 * @xdr: XDR stream where entry resides 6871 * @entry: buffer to fill in with entry data 6872 * @plus: boolean indicating whether this should be a readdirplus entry 6873 * 6874 * Returns zero if successful, otherwise a negative errno value is 6875 * returned. 6876 * 6877 * This function is not invoked during READDIR reply decoding, but 6878 * rather whenever an application invokes the getdents(2) system call 6879 * on a directory already in our cache. 6880 */ 6881 int nfs4_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry, 6882 int plus) 6883 { 6884 uint32_t bitmap[3] = {0}; 6885 uint32_t len; 6886 __be32 *p = xdr_inline_decode(xdr, 4); 6887 if (unlikely(!p)) 6888 goto out_overflow; 6889 if (*p == xdr_zero) { 6890 p = xdr_inline_decode(xdr, 4); 6891 if (unlikely(!p)) 6892 goto out_overflow; 6893 if (*p == xdr_zero) 6894 return -EAGAIN; 6895 entry->eof = 1; 6896 return -EBADCOOKIE; 6897 } 6898 6899 p = xdr_inline_decode(xdr, 12); 6900 if (unlikely(!p)) 6901 goto out_overflow; 6902 entry->prev_cookie = entry->cookie; 6903 p = xdr_decode_hyper(p, &entry->cookie); 6904 entry->len = be32_to_cpup(p); 6905 6906 p = xdr_inline_decode(xdr, entry->len); 6907 if (unlikely(!p)) 6908 goto out_overflow; 6909 entry->name = (const char *) p; 6910 6911 /* 6912 * In case the server doesn't return an inode number, 6913 * we fake one here. (We don't use inode number 0, 6914 * since glibc seems to choke on it...) 6915 */ 6916 entry->ino = 1; 6917 entry->fattr->valid = 0; 6918 6919 if (decode_attr_bitmap(xdr, bitmap) < 0) 6920 goto out_overflow; 6921 6922 if (decode_attr_length(xdr, &len, &p) < 0) 6923 goto out_overflow; 6924 6925 if (decode_getfattr_attrs(xdr, bitmap, entry->fattr, entry->fh, 6926 NULL, entry->server) < 0) 6927 goto out_overflow; 6928 if (entry->fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID) 6929 entry->ino = entry->fattr->mounted_on_fileid; 6930 else if (entry->fattr->valid & NFS_ATTR_FATTR_FILEID) 6931 entry->ino = entry->fattr->fileid; 6932 6933 entry->d_type = DT_UNKNOWN; 6934 if (entry->fattr->valid & NFS_ATTR_FATTR_TYPE) 6935 entry->d_type = nfs_umode_to_dtype(entry->fattr->mode); 6936 6937 return 0; 6938 6939 out_overflow: 6940 print_overflow_msg(__func__, xdr); 6941 return -EAGAIN; 6942 } 6943 6944 /* 6945 * We need to translate between nfs status return values and 6946 * the local errno values which may not be the same. 6947 */ 6948 static struct { 6949 int stat; 6950 int errno; 6951 } nfs_errtbl[] = { 6952 { NFS4_OK, 0 }, 6953 { NFS4ERR_PERM, -EPERM }, 6954 { NFS4ERR_NOENT, -ENOENT }, 6955 { NFS4ERR_IO, -errno_NFSERR_IO}, 6956 { NFS4ERR_NXIO, -ENXIO }, 6957 { NFS4ERR_ACCESS, -EACCES }, 6958 { NFS4ERR_EXIST, -EEXIST }, 6959 { NFS4ERR_XDEV, -EXDEV }, 6960 { NFS4ERR_NOTDIR, -ENOTDIR }, 6961 { NFS4ERR_ISDIR, -EISDIR }, 6962 { NFS4ERR_INVAL, -EINVAL }, 6963 { NFS4ERR_FBIG, -EFBIG }, 6964 { NFS4ERR_NOSPC, -ENOSPC }, 6965 { NFS4ERR_ROFS, -EROFS }, 6966 { NFS4ERR_MLINK, -EMLINK }, 6967 { NFS4ERR_NAMETOOLONG, -ENAMETOOLONG }, 6968 { NFS4ERR_NOTEMPTY, -ENOTEMPTY }, 6969 { NFS4ERR_DQUOT, -EDQUOT }, 6970 { NFS4ERR_STALE, -ESTALE }, 6971 { NFS4ERR_BADHANDLE, -EBADHANDLE }, 6972 { NFS4ERR_BAD_COOKIE, -EBADCOOKIE }, 6973 { NFS4ERR_NOTSUPP, -ENOTSUPP }, 6974 { NFS4ERR_TOOSMALL, -ETOOSMALL }, 6975 { NFS4ERR_SERVERFAULT, -EREMOTEIO }, 6976 { NFS4ERR_BADTYPE, -EBADTYPE }, 6977 { NFS4ERR_LOCKED, -EAGAIN }, 6978 { NFS4ERR_SYMLINK, -ELOOP }, 6979 { NFS4ERR_OP_ILLEGAL, -EOPNOTSUPP }, 6980 { NFS4ERR_DEADLOCK, -EDEADLK }, 6981 { -1, -EIO } 6982 }; 6983 6984 /* 6985 * Convert an NFS error code to a local one. 6986 * This one is used jointly by NFSv2 and NFSv3. 6987 */ 6988 static int 6989 nfs4_stat_to_errno(int stat) 6990 { 6991 int i; 6992 for (i = 0; nfs_errtbl[i].stat != -1; i++) { 6993 if (nfs_errtbl[i].stat == stat) 6994 return nfs_errtbl[i].errno; 6995 } 6996 if (stat <= 10000 || stat > 10100) { 6997 /* The server is looney tunes. */ 6998 return -EREMOTEIO; 6999 } 7000 /* If we cannot translate the error, the recovery routines should 7001 * handle it. 7002 * Note: remaining NFSv4 error codes have values > 10000, so should 7003 * not conflict with native Linux error codes. 7004 */ 7005 return -stat; 7006 } 7007 7008 #define PROC(proc, argtype, restype) \ 7009 [NFSPROC4_CLNT_##proc] = { \ 7010 .p_proc = NFSPROC4_COMPOUND, \ 7011 .p_encode = (kxdreproc_t)nfs4_xdr_##argtype, \ 7012 .p_decode = (kxdrdproc_t)nfs4_xdr_##restype, \ 7013 .p_arglen = NFS4_##argtype##_sz, \ 7014 .p_replen = NFS4_##restype##_sz, \ 7015 .p_statidx = NFSPROC4_CLNT_##proc, \ 7016 .p_name = #proc, \ 7017 } 7018 7019 struct rpc_procinfo nfs4_procedures[] = { 7020 PROC(READ, enc_read, dec_read), 7021 PROC(WRITE, enc_write, dec_write), 7022 PROC(COMMIT, enc_commit, dec_commit), 7023 PROC(OPEN, enc_open, dec_open), 7024 PROC(OPEN_CONFIRM, enc_open_confirm, dec_open_confirm), 7025 PROC(OPEN_NOATTR, enc_open_noattr, dec_open_noattr), 7026 PROC(OPEN_DOWNGRADE, enc_open_downgrade, dec_open_downgrade), 7027 PROC(CLOSE, enc_close, dec_close), 7028 PROC(SETATTR, enc_setattr, dec_setattr), 7029 PROC(FSINFO, enc_fsinfo, dec_fsinfo), 7030 PROC(RENEW, enc_renew, dec_renew), 7031 PROC(SETCLIENTID, enc_setclientid, dec_setclientid), 7032 PROC(SETCLIENTID_CONFIRM, enc_setclientid_confirm, dec_setclientid_confirm), 7033 PROC(LOCK, enc_lock, dec_lock), 7034 PROC(LOCKT, enc_lockt, dec_lockt), 7035 PROC(LOCKU, enc_locku, dec_locku), 7036 PROC(ACCESS, enc_access, dec_access), 7037 PROC(GETATTR, enc_getattr, dec_getattr), 7038 PROC(LOOKUP, enc_lookup, dec_lookup), 7039 PROC(LOOKUP_ROOT, enc_lookup_root, dec_lookup_root), 7040 PROC(REMOVE, enc_remove, dec_remove), 7041 PROC(RENAME, enc_rename, dec_rename), 7042 PROC(LINK, enc_link, dec_link), 7043 PROC(SYMLINK, enc_symlink, dec_symlink), 7044 PROC(CREATE, enc_create, dec_create), 7045 PROC(PATHCONF, enc_pathconf, dec_pathconf), 7046 PROC(STATFS, enc_statfs, dec_statfs), 7047 PROC(READLINK, enc_readlink, dec_readlink), 7048 PROC(READDIR, enc_readdir, dec_readdir), 7049 PROC(SERVER_CAPS, enc_server_caps, dec_server_caps), 7050 PROC(DELEGRETURN, enc_delegreturn, dec_delegreturn), 7051 PROC(GETACL, enc_getacl, dec_getacl), 7052 PROC(SETACL, enc_setacl, dec_setacl), 7053 PROC(FS_LOCATIONS, enc_fs_locations, dec_fs_locations), 7054 PROC(RELEASE_LOCKOWNER, enc_release_lockowner, dec_release_lockowner), 7055 PROC(SECINFO, enc_secinfo, dec_secinfo), 7056 #if defined(CONFIG_NFS_V4_1) 7057 PROC(EXCHANGE_ID, enc_exchange_id, dec_exchange_id), 7058 PROC(CREATE_SESSION, enc_create_session, dec_create_session), 7059 PROC(DESTROY_SESSION, enc_destroy_session, dec_destroy_session), 7060 PROC(SEQUENCE, enc_sequence, dec_sequence), 7061 PROC(GET_LEASE_TIME, enc_get_lease_time, dec_get_lease_time), 7062 PROC(RECLAIM_COMPLETE, enc_reclaim_complete, dec_reclaim_complete), 7063 PROC(GETDEVICEINFO, enc_getdeviceinfo, dec_getdeviceinfo), 7064 PROC(LAYOUTGET, enc_layoutget, dec_layoutget), 7065 PROC(LAYOUTCOMMIT, enc_layoutcommit, dec_layoutcommit), 7066 PROC(LAYOUTRETURN, enc_layoutreturn, dec_layoutreturn), 7067 PROC(SECINFO_NO_NAME, enc_secinfo_no_name, dec_secinfo_no_name), 7068 PROC(TEST_STATEID, enc_test_stateid, dec_test_stateid), 7069 PROC(FREE_STATEID, enc_free_stateid, dec_free_stateid), 7070 PROC(GETDEVICELIST, enc_getdevicelist, dec_getdevicelist), 7071 #endif /* CONFIG_NFS_V4_1 */ 7072 }; 7073 7074 const struct rpc_version nfs_version4 = { 7075 .number = 4, 7076 .nrprocs = ARRAY_SIZE(nfs4_procedures), 7077 .procs = nfs4_procedures 7078 }; 7079 7080 /* 7081 * Local variables: 7082 * c-basic-offset: 8 7083 * End: 7084 */ 7085