1/* 2 * fs/nfs/nfs4xdr.c 3 * 4 * Client-side XDR for NFSv4. 5 * 6 * Copyright (c) 2002 The Regents of the University of Michigan. 7 * All rights reserved. 8 * 9 * Kendrick Smith <kmsmith@umich.edu> 10 * Andy Adamson <andros@umich.edu> 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 16 * 1. Redistributions of source code must retain the above copyright 17 * notice, this list of conditions and the following disclaimer. 18 * 2. Redistributions in binary form must reproduce the above copyright 19 * notice, this list of conditions and the following disclaimer in the 20 * documentation and/or other materials provided with the distribution. 21 * 3. Neither the name of the University nor the names of its 22 * contributors may be used to endorse or promote products derived 23 * from this software without specific prior written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED 26 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 27 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 28 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR 32 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 33 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 34 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 35 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 36 */ 37 38#include <linux/param.h> 39#include <linux/time.h> 40#include <linux/mm.h> 41#include <linux/errno.h> 42#include <linux/string.h> 43#include <linux/in.h> 44#include <linux/pagemap.h> 45#include <linux/proc_fs.h> 46#include <linux/kdev_t.h> 47#include <linux/module.h> 48#include <linux/utsname.h> 49#include <linux/sunrpc/clnt.h> 50#include <linux/sunrpc/msg_prot.h> 51#include <linux/sunrpc/gss_api.h> 52#include <linux/nfs.h> 53#include <linux/nfs4.h> 54#include <linux/nfs_fs.h> 55 56#include "nfs4_fs.h" 57#include "internal.h" 58#include "nfs4idmap.h" 59#include "nfs4session.h" 60#include "pnfs.h" 61#include "netns.h" 62 63#define NFSDBG_FACILITY NFSDBG_XDR 64 65/* Mapping from NFS error code to "errno" error code. */ 66#define errno_NFSERR_IO EIO 67 68static int nfs4_stat_to_errno(int); 69 70/* NFSv4 COMPOUND tags are only wanted for debugging purposes */ 71#ifdef DEBUG 72#define NFS4_MAXTAGLEN 20 73#else 74#define NFS4_MAXTAGLEN 0 75#endif 76 77/* lock,open owner id: 78 * we currently use size 2 (u64) out of (NFS4_OPAQUE_LIMIT >> 2) 79 */ 80#define open_owner_id_maxsz (1 + 2 + 1 + 1 + 2) 81#define lock_owner_id_maxsz (1 + 1 + 4) 82#define decode_lockowner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ)) 83#define compound_encode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2)) 84#define compound_decode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2)) 85#define op_encode_hdr_maxsz (1) 86#define op_decode_hdr_maxsz (2) 87#define encode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE)) 88#define decode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE)) 89#define encode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE)) 90#define decode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE)) 91#define encode_putfh_maxsz (op_encode_hdr_maxsz + 1 + \ 92 (NFS4_FHSIZE >> 2)) 93#define decode_putfh_maxsz (op_decode_hdr_maxsz) 94#define encode_putrootfh_maxsz (op_encode_hdr_maxsz) 95#define decode_putrootfh_maxsz (op_decode_hdr_maxsz) 96#define encode_getfh_maxsz (op_encode_hdr_maxsz) 97#define decode_getfh_maxsz (op_decode_hdr_maxsz + 1 + \ 98 ((3+NFS4_FHSIZE) >> 2)) 99#define nfs4_fattr_bitmap_maxsz 4 100#define encode_getattr_maxsz (op_encode_hdr_maxsz + nfs4_fattr_bitmap_maxsz) 101#define nfs4_name_maxsz (1 + ((3 + NFS4_MAXNAMLEN) >> 2)) 102#define nfs4_path_maxsz (1 + ((3 + NFS4_MAXPATHLEN) >> 2)) 103#define nfs4_owner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ)) 104#define nfs4_group_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ)) 105#ifdef CONFIG_NFS_V4_SECURITY_LABEL 106/* PI(4 bytes) + LFS(4 bytes) + 1(for null terminator?) + MAXLABELLEN */ 107#define nfs4_label_maxsz (4 + 4 + 1 + XDR_QUADLEN(NFS4_MAXLABELLEN)) 108#else 109#define nfs4_label_maxsz 0 110#endif 111/* We support only one layout type per file system */ 112#define decode_mdsthreshold_maxsz (1 + 1 + nfs4_fattr_bitmap_maxsz + 1 + 8) 113/* This is based on getfattr, which uses the most attributes: */ 114#define nfs4_fattr_value_maxsz (1 + (1 + 2 + 2 + 4 + 2 + 1 + 1 + 2 + 2 + \ 115 3 + 3 + 3 + nfs4_owner_maxsz + \ 116 nfs4_group_maxsz + nfs4_label_maxsz + \ 117 decode_mdsthreshold_maxsz)) 118#define nfs4_fattr_maxsz (nfs4_fattr_bitmap_maxsz + \ 119 nfs4_fattr_value_maxsz) 120#define decode_getattr_maxsz (op_decode_hdr_maxsz + nfs4_fattr_maxsz) 121#define encode_attrs_maxsz (nfs4_fattr_bitmap_maxsz + \ 122 1 + 2 + 1 + \ 123 nfs4_owner_maxsz + \ 124 nfs4_group_maxsz + \ 125 nfs4_label_maxsz + \ 126 4 + 4) 127#define encode_savefh_maxsz (op_encode_hdr_maxsz) 128#define decode_savefh_maxsz (op_decode_hdr_maxsz) 129#define encode_restorefh_maxsz (op_encode_hdr_maxsz) 130#define decode_restorefh_maxsz (op_decode_hdr_maxsz) 131#define encode_fsinfo_maxsz (encode_getattr_maxsz) 132/* The 5 accounts for the PNFS attributes, and assumes that at most three 133 * layout types will be returned. 134 */ 135#define decode_fsinfo_maxsz (op_decode_hdr_maxsz + \ 136 nfs4_fattr_bitmap_maxsz + 4 + 8 + 5) 137#define encode_renew_maxsz (op_encode_hdr_maxsz + 3) 138#define decode_renew_maxsz (op_decode_hdr_maxsz) 139#define encode_setclientid_maxsz \ 140 (op_encode_hdr_maxsz + \ 141 XDR_QUADLEN(NFS4_VERIFIER_SIZE) + \ 142 XDR_QUADLEN(NFS4_SETCLIENTID_NAMELEN) + \ 143 1 /* sc_prog */ + \ 144 1 + XDR_QUADLEN(RPCBIND_MAXNETIDLEN) + \ 145 1 + XDR_QUADLEN(RPCBIND_MAXUADDRLEN) + \ 146 1) /* sc_cb_ident */ 147#define decode_setclientid_maxsz \ 148 (op_decode_hdr_maxsz + \ 149 2 /* clientid */ + \ 150 XDR_QUADLEN(NFS4_VERIFIER_SIZE) + \ 151 1 + XDR_QUADLEN(RPCBIND_MAXNETIDLEN) + \ 152 1 + XDR_QUADLEN(RPCBIND_MAXUADDRLEN)) 153#define encode_setclientid_confirm_maxsz \ 154 (op_encode_hdr_maxsz + \ 155 3 + (NFS4_VERIFIER_SIZE >> 2)) 156#define decode_setclientid_confirm_maxsz \ 157 (op_decode_hdr_maxsz) 158#define encode_lookup_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz) 159#define decode_lookup_maxsz (op_decode_hdr_maxsz) 160#define encode_share_access_maxsz \ 161 (2) 162#define encode_createmode_maxsz (1 + encode_attrs_maxsz + encode_verifier_maxsz) 163#define encode_opentype_maxsz (1 + encode_createmode_maxsz) 164#define encode_claim_null_maxsz (1 + nfs4_name_maxsz) 165#define encode_open_maxsz (op_encode_hdr_maxsz + \ 166 2 + encode_share_access_maxsz + 2 + \ 167 open_owner_id_maxsz + \ 168 encode_opentype_maxsz + \ 169 encode_claim_null_maxsz) 170#define decode_ace_maxsz (3 + nfs4_owner_maxsz) 171#define decode_delegation_maxsz (1 + decode_stateid_maxsz + 1 + \ 172 decode_ace_maxsz) 173#define decode_change_info_maxsz (5) 174#define decode_open_maxsz (op_decode_hdr_maxsz + \ 175 decode_stateid_maxsz + \ 176 decode_change_info_maxsz + 1 + \ 177 nfs4_fattr_bitmap_maxsz + \ 178 decode_delegation_maxsz) 179#define encode_open_confirm_maxsz \ 180 (op_encode_hdr_maxsz + \ 181 encode_stateid_maxsz + 1) 182#define decode_open_confirm_maxsz \ 183 (op_decode_hdr_maxsz + \ 184 decode_stateid_maxsz) 185#define encode_open_downgrade_maxsz \ 186 (op_encode_hdr_maxsz + \ 187 encode_stateid_maxsz + 1 + \ 188 encode_share_access_maxsz) 189#define decode_open_downgrade_maxsz \ 190 (op_decode_hdr_maxsz + \ 191 decode_stateid_maxsz) 192#define encode_close_maxsz (op_encode_hdr_maxsz + \ 193 1 + encode_stateid_maxsz) 194#define decode_close_maxsz (op_decode_hdr_maxsz + \ 195 decode_stateid_maxsz) 196#define encode_setattr_maxsz (op_encode_hdr_maxsz + \ 197 encode_stateid_maxsz + \ 198 encode_attrs_maxsz) 199#define decode_setattr_maxsz (op_decode_hdr_maxsz + \ 200 nfs4_fattr_bitmap_maxsz) 201#define encode_read_maxsz (op_encode_hdr_maxsz + \ 202 encode_stateid_maxsz + 3) 203#define decode_read_maxsz (op_decode_hdr_maxsz + 2) 204#define encode_readdir_maxsz (op_encode_hdr_maxsz + \ 205 2 + encode_verifier_maxsz + 5 + \ 206 nfs4_label_maxsz) 207#define decode_readdir_maxsz (op_decode_hdr_maxsz + \ 208 decode_verifier_maxsz) 209#define encode_readlink_maxsz (op_encode_hdr_maxsz) 210#define decode_readlink_maxsz (op_decode_hdr_maxsz + 1) 211#define encode_write_maxsz (op_encode_hdr_maxsz + \ 212 encode_stateid_maxsz + 4) 213#define decode_write_maxsz (op_decode_hdr_maxsz + \ 214 2 + decode_verifier_maxsz) 215#define encode_commit_maxsz (op_encode_hdr_maxsz + 3) 216#define decode_commit_maxsz (op_decode_hdr_maxsz + \ 217 decode_verifier_maxsz) 218#define encode_remove_maxsz (op_encode_hdr_maxsz + \ 219 nfs4_name_maxsz) 220#define decode_remove_maxsz (op_decode_hdr_maxsz + \ 221 decode_change_info_maxsz) 222#define encode_rename_maxsz (op_encode_hdr_maxsz + \ 223 2 * nfs4_name_maxsz) 224#define decode_rename_maxsz (op_decode_hdr_maxsz + \ 225 decode_change_info_maxsz + \ 226 decode_change_info_maxsz) 227#define encode_link_maxsz (op_encode_hdr_maxsz + \ 228 nfs4_name_maxsz) 229#define decode_link_maxsz (op_decode_hdr_maxsz + decode_change_info_maxsz) 230#define encode_lockowner_maxsz (7) 231#define encode_lock_maxsz (op_encode_hdr_maxsz + \ 232 7 + \ 233 1 + encode_stateid_maxsz + 1 + \ 234 encode_lockowner_maxsz) 235#define decode_lock_denied_maxsz \ 236 (8 + decode_lockowner_maxsz) 237#define decode_lock_maxsz (op_decode_hdr_maxsz + \ 238 decode_lock_denied_maxsz) 239#define encode_lockt_maxsz (op_encode_hdr_maxsz + 5 + \ 240 encode_lockowner_maxsz) 241#define decode_lockt_maxsz (op_decode_hdr_maxsz + \ 242 decode_lock_denied_maxsz) 243#define encode_locku_maxsz (op_encode_hdr_maxsz + 3 + \ 244 encode_stateid_maxsz + \ 245 4) 246#define decode_locku_maxsz (op_decode_hdr_maxsz + \ 247 decode_stateid_maxsz) 248#define encode_release_lockowner_maxsz \ 249 (op_encode_hdr_maxsz + \ 250 encode_lockowner_maxsz) 251#define decode_release_lockowner_maxsz \ 252 (op_decode_hdr_maxsz) 253#define encode_access_maxsz (op_encode_hdr_maxsz + 1) 254#define decode_access_maxsz (op_decode_hdr_maxsz + 2) 255#define encode_symlink_maxsz (op_encode_hdr_maxsz + \ 256 1 + nfs4_name_maxsz + \ 257 1 + \ 258 nfs4_fattr_maxsz) 259#define decode_symlink_maxsz (op_decode_hdr_maxsz + 8) 260#define encode_create_maxsz (op_encode_hdr_maxsz + \ 261 1 + 2 + nfs4_name_maxsz + \ 262 encode_attrs_maxsz) 263#define decode_create_maxsz (op_decode_hdr_maxsz + \ 264 decode_change_info_maxsz + \ 265 nfs4_fattr_bitmap_maxsz) 266#define encode_statfs_maxsz (encode_getattr_maxsz) 267#define decode_statfs_maxsz (decode_getattr_maxsz) 268#define encode_delegreturn_maxsz (op_encode_hdr_maxsz + 4) 269#define decode_delegreturn_maxsz (op_decode_hdr_maxsz) 270#define encode_getacl_maxsz (encode_getattr_maxsz) 271#define decode_getacl_maxsz (op_decode_hdr_maxsz + \ 272 nfs4_fattr_bitmap_maxsz + 1) 273#define encode_setacl_maxsz (op_encode_hdr_maxsz + \ 274 encode_stateid_maxsz + 3) 275#define decode_setacl_maxsz (decode_setattr_maxsz) 276#define encode_fs_locations_maxsz \ 277 (encode_getattr_maxsz) 278#define decode_fs_locations_maxsz \ 279 (0) 280#define encode_secinfo_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz) 281#define decode_secinfo_maxsz (op_decode_hdr_maxsz + 1 + ((NFS_MAX_SECFLAVORS * (16 + GSS_OID_MAX_LEN)) / 4)) 282 283#if defined(CONFIG_NFS_V4_1) 284#define NFS4_MAX_MACHINE_NAME_LEN (64) 285#define IMPL_NAME_LIMIT (sizeof(utsname()->sysname) + sizeof(utsname()->release) + \ 286 sizeof(utsname()->version) + sizeof(utsname()->machine) + 8) 287 288#define encode_exchange_id_maxsz (op_encode_hdr_maxsz + \ 289 encode_verifier_maxsz + \ 290 1 /* co_ownerid.len */ + \ 291 XDR_QUADLEN(NFS4_EXCHANGE_ID_LEN) + \ 292 1 /* flags */ + \ 293 1 /* spa_how */ + \ 294 /* max is SP4_MACH_CRED (for now) */ + \ 295 1 + NFS4_OP_MAP_NUM_WORDS + \ 296 1 + NFS4_OP_MAP_NUM_WORDS + \ 297 1 /* implementation id array of size 1 */ + \ 298 1 /* nii_domain */ + \ 299 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \ 300 1 /* nii_name */ + \ 301 XDR_QUADLEN(IMPL_NAME_LIMIT) + \ 302 3 /* nii_date */) 303#define decode_exchange_id_maxsz (op_decode_hdr_maxsz + \ 304 2 /* eir_clientid */ + \ 305 1 /* eir_sequenceid */ + \ 306 1 /* eir_flags */ + \ 307 1 /* spr_how */ + \ 308 /* max is SP4_MACH_CRED (for now) */ + \ 309 1 + NFS4_OP_MAP_NUM_WORDS + \ 310 1 + NFS4_OP_MAP_NUM_WORDS + \ 311 2 /* eir_server_owner.so_minor_id */ + \ 312 /* eir_server_owner.so_major_id<> */ \ 313 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \ 314 /* eir_server_scope<> */ \ 315 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \ 316 1 /* eir_server_impl_id array length */ + \ 317 1 /* nii_domain */ + \ 318 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \ 319 1 /* nii_name */ + \ 320 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \ 321 3 /* nii_date */) 322#define encode_channel_attrs_maxsz (6 + 1 /* ca_rdma_ird.len (0) */) 323#define decode_channel_attrs_maxsz (6 + \ 324 1 /* ca_rdma_ird.len */ + \ 325 1 /* ca_rdma_ird */) 326#define encode_create_session_maxsz (op_encode_hdr_maxsz + \ 327 2 /* csa_clientid */ + \ 328 1 /* csa_sequence */ + \ 329 1 /* csa_flags */ + \ 330 encode_channel_attrs_maxsz + \ 331 encode_channel_attrs_maxsz + \ 332 1 /* csa_cb_program */ + \ 333 1 /* csa_sec_parms.len (1) */ + \ 334 1 /* cb_secflavor (AUTH_SYS) */ + \ 335 1 /* stamp */ + \ 336 1 /* machinename.len */ + \ 337 XDR_QUADLEN(NFS4_MAX_MACHINE_NAME_LEN) + \ 338 1 /* uid */ + \ 339 1 /* gid */ + \ 340 1 /* gids.len (0) */) 341#define decode_create_session_maxsz (op_decode_hdr_maxsz + \ 342 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \ 343 1 /* csr_sequence */ + \ 344 1 /* csr_flags */ + \ 345 decode_channel_attrs_maxsz + \ 346 decode_channel_attrs_maxsz) 347#define encode_bind_conn_to_session_maxsz (op_encode_hdr_maxsz + \ 348 /* bctsa_sessid */ \ 349 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \ 350 1 /* bctsa_dir */ + \ 351 1 /* bctsa_use_conn_in_rdma_mode */) 352#define decode_bind_conn_to_session_maxsz (op_decode_hdr_maxsz + \ 353 /* bctsr_sessid */ \ 354 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \ 355 1 /* bctsr_dir */ + \ 356 1 /* bctsr_use_conn_in_rdma_mode */) 357#define encode_destroy_session_maxsz (op_encode_hdr_maxsz + 4) 358#define decode_destroy_session_maxsz (op_decode_hdr_maxsz) 359#define encode_destroy_clientid_maxsz (op_encode_hdr_maxsz + 2) 360#define decode_destroy_clientid_maxsz (op_decode_hdr_maxsz) 361#define encode_sequence_maxsz (op_encode_hdr_maxsz + \ 362 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 4) 363#define decode_sequence_maxsz (op_decode_hdr_maxsz + \ 364 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 5) 365#define encode_reclaim_complete_maxsz (op_encode_hdr_maxsz + 4) 366#define decode_reclaim_complete_maxsz (op_decode_hdr_maxsz + 4) 367#define encode_getdeviceinfo_maxsz (op_encode_hdr_maxsz + \ 368 XDR_QUADLEN(NFS4_DEVICEID4_SIZE) + \ 369 1 /* layout type */ + \ 370 1 /* maxcount */ + \ 371 1 /* bitmap size */ + \ 372 1 /* notification bitmap length */ + \ 373 1 /* notification bitmap, word 0 */) 374#define decode_getdeviceinfo_maxsz (op_decode_hdr_maxsz + \ 375 1 /* layout type */ + \ 376 1 /* opaque devaddr4 length */ + \ 377 /* devaddr4 payload is read into page */ \ 378 1 /* notification bitmap length */ + \ 379 1 /* notification bitmap, word 0 */) 380#define encode_layoutget_maxsz (op_encode_hdr_maxsz + 10 + \ 381 encode_stateid_maxsz) 382#define decode_layoutget_maxsz (op_decode_hdr_maxsz + 8 + \ 383 decode_stateid_maxsz + \ 384 XDR_QUADLEN(PNFS_LAYOUT_MAXSIZE)) 385#define encode_layoutcommit_maxsz (op_encode_hdr_maxsz + \ 386 2 /* offset */ + \ 387 2 /* length */ + \ 388 1 /* reclaim */ + \ 389 encode_stateid_maxsz + \ 390 1 /* new offset (true) */ + \ 391 2 /* last byte written */ + \ 392 1 /* nt_timechanged (false) */ + \ 393 1 /* layoutupdate4 layout type */ + \ 394 1 /* layoutupdate4 opaqueue len */) 395 /* the actual content of layoutupdate4 should 396 be allocated by drivers and spliced in 397 using xdr_write_pages */ 398#define decode_layoutcommit_maxsz (op_decode_hdr_maxsz + 3) 399#define encode_layoutreturn_maxsz (8 + op_encode_hdr_maxsz + \ 400 encode_stateid_maxsz + \ 401 1 /* FIXME: opaque lrf_body always empty at the moment */) 402#define decode_layoutreturn_maxsz (op_decode_hdr_maxsz + \ 403 1 + decode_stateid_maxsz) 404#define encode_secinfo_no_name_maxsz (op_encode_hdr_maxsz + 1) 405#define decode_secinfo_no_name_maxsz decode_secinfo_maxsz 406#define encode_test_stateid_maxsz (op_encode_hdr_maxsz + 2 + \ 407 XDR_QUADLEN(NFS4_STATEID_SIZE)) 408#define decode_test_stateid_maxsz (op_decode_hdr_maxsz + 2 + 1) 409#define encode_free_stateid_maxsz (op_encode_hdr_maxsz + 1 + \ 410 XDR_QUADLEN(NFS4_STATEID_SIZE)) 411#define decode_free_stateid_maxsz (op_decode_hdr_maxsz) 412#else /* CONFIG_NFS_V4_1 */ 413#define encode_sequence_maxsz 0 414#define decode_sequence_maxsz 0 415#endif /* CONFIG_NFS_V4_1 */ 416 417#define NFS4_enc_compound_sz (1024) /* XXX: large enough? */ 418#define NFS4_dec_compound_sz (1024) /* XXX: large enough? */ 419#define NFS4_enc_read_sz (compound_encode_hdr_maxsz + \ 420 encode_sequence_maxsz + \ 421 encode_putfh_maxsz + \ 422 encode_read_maxsz) 423#define NFS4_dec_read_sz (compound_decode_hdr_maxsz + \ 424 decode_sequence_maxsz + \ 425 decode_putfh_maxsz + \ 426 decode_read_maxsz) 427#define NFS4_enc_readlink_sz (compound_encode_hdr_maxsz + \ 428 encode_sequence_maxsz + \ 429 encode_putfh_maxsz + \ 430 encode_readlink_maxsz) 431#define NFS4_dec_readlink_sz (compound_decode_hdr_maxsz + \ 432 decode_sequence_maxsz + \ 433 decode_putfh_maxsz + \ 434 decode_readlink_maxsz) 435#define NFS4_enc_readdir_sz (compound_encode_hdr_maxsz + \ 436 encode_sequence_maxsz + \ 437 encode_putfh_maxsz + \ 438 encode_readdir_maxsz) 439#define NFS4_dec_readdir_sz (compound_decode_hdr_maxsz + \ 440 decode_sequence_maxsz + \ 441 decode_putfh_maxsz + \ 442 decode_readdir_maxsz) 443#define NFS4_enc_write_sz (compound_encode_hdr_maxsz + \ 444 encode_sequence_maxsz + \ 445 encode_putfh_maxsz + \ 446 encode_write_maxsz + \ 447 encode_getattr_maxsz) 448#define NFS4_dec_write_sz (compound_decode_hdr_maxsz + \ 449 decode_sequence_maxsz + \ 450 decode_putfh_maxsz + \ 451 decode_write_maxsz + \ 452 decode_getattr_maxsz) 453#define NFS4_enc_commit_sz (compound_encode_hdr_maxsz + \ 454 encode_sequence_maxsz + \ 455 encode_putfh_maxsz + \ 456 encode_commit_maxsz) 457#define NFS4_dec_commit_sz (compound_decode_hdr_maxsz + \ 458 decode_sequence_maxsz + \ 459 decode_putfh_maxsz + \ 460 decode_commit_maxsz) 461#define NFS4_enc_open_sz (compound_encode_hdr_maxsz + \ 462 encode_sequence_maxsz + \ 463 encode_putfh_maxsz + \ 464 encode_open_maxsz + \ 465 encode_access_maxsz + \ 466 encode_getfh_maxsz + \ 467 encode_getattr_maxsz) 468#define NFS4_dec_open_sz (compound_decode_hdr_maxsz + \ 469 decode_sequence_maxsz + \ 470 decode_putfh_maxsz + \ 471 decode_open_maxsz + \ 472 decode_access_maxsz + \ 473 decode_getfh_maxsz + \ 474 decode_getattr_maxsz) 475#define NFS4_enc_open_confirm_sz \ 476 (compound_encode_hdr_maxsz + \ 477 encode_putfh_maxsz + \ 478 encode_open_confirm_maxsz) 479#define NFS4_dec_open_confirm_sz \ 480 (compound_decode_hdr_maxsz + \ 481 decode_putfh_maxsz + \ 482 decode_open_confirm_maxsz) 483#define NFS4_enc_open_noattr_sz (compound_encode_hdr_maxsz + \ 484 encode_sequence_maxsz + \ 485 encode_putfh_maxsz + \ 486 encode_open_maxsz + \ 487 encode_access_maxsz + \ 488 encode_getattr_maxsz) 489#define NFS4_dec_open_noattr_sz (compound_decode_hdr_maxsz + \ 490 decode_sequence_maxsz + \ 491 decode_putfh_maxsz + \ 492 decode_open_maxsz + \ 493 decode_access_maxsz + \ 494 decode_getattr_maxsz) 495#define NFS4_enc_open_downgrade_sz \ 496 (compound_encode_hdr_maxsz + \ 497 encode_sequence_maxsz + \ 498 encode_putfh_maxsz + \ 499 encode_open_downgrade_maxsz + \ 500 encode_getattr_maxsz) 501#define NFS4_dec_open_downgrade_sz \ 502 (compound_decode_hdr_maxsz + \ 503 decode_sequence_maxsz + \ 504 decode_putfh_maxsz + \ 505 decode_open_downgrade_maxsz + \ 506 decode_getattr_maxsz) 507#define NFS4_enc_close_sz (compound_encode_hdr_maxsz + \ 508 encode_sequence_maxsz + \ 509 encode_putfh_maxsz + \ 510 encode_close_maxsz + \ 511 encode_getattr_maxsz) 512#define NFS4_dec_close_sz (compound_decode_hdr_maxsz + \ 513 decode_sequence_maxsz + \ 514 decode_putfh_maxsz + \ 515 decode_close_maxsz + \ 516 decode_getattr_maxsz) 517#define NFS4_enc_setattr_sz (compound_encode_hdr_maxsz + \ 518 encode_sequence_maxsz + \ 519 encode_putfh_maxsz + \ 520 encode_setattr_maxsz + \ 521 encode_getattr_maxsz) 522#define NFS4_dec_setattr_sz (compound_decode_hdr_maxsz + \ 523 decode_sequence_maxsz + \ 524 decode_putfh_maxsz + \ 525 decode_setattr_maxsz + \ 526 decode_getattr_maxsz) 527#define NFS4_enc_fsinfo_sz (compound_encode_hdr_maxsz + \ 528 encode_sequence_maxsz + \ 529 encode_putfh_maxsz + \ 530 encode_fsinfo_maxsz) 531#define NFS4_dec_fsinfo_sz (compound_decode_hdr_maxsz + \ 532 decode_sequence_maxsz + \ 533 decode_putfh_maxsz + \ 534 decode_fsinfo_maxsz) 535#define NFS4_enc_renew_sz (compound_encode_hdr_maxsz + \ 536 encode_renew_maxsz) 537#define NFS4_dec_renew_sz (compound_decode_hdr_maxsz + \ 538 decode_renew_maxsz) 539#define NFS4_enc_setclientid_sz (compound_encode_hdr_maxsz + \ 540 encode_setclientid_maxsz) 541#define NFS4_dec_setclientid_sz (compound_decode_hdr_maxsz + \ 542 decode_setclientid_maxsz) 543#define NFS4_enc_setclientid_confirm_sz \ 544 (compound_encode_hdr_maxsz + \ 545 encode_setclientid_confirm_maxsz) 546#define NFS4_dec_setclientid_confirm_sz \ 547 (compound_decode_hdr_maxsz + \ 548 decode_setclientid_confirm_maxsz) 549#define NFS4_enc_lock_sz (compound_encode_hdr_maxsz + \ 550 encode_sequence_maxsz + \ 551 encode_putfh_maxsz + \ 552 encode_lock_maxsz) 553#define NFS4_dec_lock_sz (compound_decode_hdr_maxsz + \ 554 decode_sequence_maxsz + \ 555 decode_putfh_maxsz + \ 556 decode_lock_maxsz) 557#define NFS4_enc_lockt_sz (compound_encode_hdr_maxsz + \ 558 encode_sequence_maxsz + \ 559 encode_putfh_maxsz + \ 560 encode_lockt_maxsz) 561#define NFS4_dec_lockt_sz (compound_decode_hdr_maxsz + \ 562 decode_sequence_maxsz + \ 563 decode_putfh_maxsz + \ 564 decode_lockt_maxsz) 565#define NFS4_enc_locku_sz (compound_encode_hdr_maxsz + \ 566 encode_sequence_maxsz + \ 567 encode_putfh_maxsz + \ 568 encode_locku_maxsz) 569#define NFS4_dec_locku_sz (compound_decode_hdr_maxsz + \ 570 decode_sequence_maxsz + \ 571 decode_putfh_maxsz + \ 572 decode_locku_maxsz) 573#define NFS4_enc_release_lockowner_sz \ 574 (compound_encode_hdr_maxsz + \ 575 encode_lockowner_maxsz) 576#define NFS4_dec_release_lockowner_sz \ 577 (compound_decode_hdr_maxsz + \ 578 decode_lockowner_maxsz) 579#define NFS4_enc_access_sz (compound_encode_hdr_maxsz + \ 580 encode_sequence_maxsz + \ 581 encode_putfh_maxsz + \ 582 encode_access_maxsz + \ 583 encode_getattr_maxsz) 584#define NFS4_dec_access_sz (compound_decode_hdr_maxsz + \ 585 decode_sequence_maxsz + \ 586 decode_putfh_maxsz + \ 587 decode_access_maxsz + \ 588 decode_getattr_maxsz) 589#define NFS4_enc_getattr_sz (compound_encode_hdr_maxsz + \ 590 encode_sequence_maxsz + \ 591 encode_putfh_maxsz + \ 592 encode_getattr_maxsz + \ 593 encode_renew_maxsz) 594#define NFS4_dec_getattr_sz (compound_decode_hdr_maxsz + \ 595 decode_sequence_maxsz + \ 596 decode_putfh_maxsz + \ 597 decode_getattr_maxsz + \ 598 decode_renew_maxsz) 599#define NFS4_enc_lookup_sz (compound_encode_hdr_maxsz + \ 600 encode_sequence_maxsz + \ 601 encode_putfh_maxsz + \ 602 encode_lookup_maxsz + \ 603 encode_getattr_maxsz + \ 604 encode_getfh_maxsz) 605#define NFS4_dec_lookup_sz (compound_decode_hdr_maxsz + \ 606 decode_sequence_maxsz + \ 607 decode_putfh_maxsz + \ 608 decode_lookup_maxsz + \ 609 decode_getattr_maxsz + \ 610 decode_getfh_maxsz) 611#define NFS4_enc_lookup_root_sz (compound_encode_hdr_maxsz + \ 612 encode_sequence_maxsz + \ 613 encode_putrootfh_maxsz + \ 614 encode_getattr_maxsz + \ 615 encode_getfh_maxsz) 616#define NFS4_dec_lookup_root_sz (compound_decode_hdr_maxsz + \ 617 decode_sequence_maxsz + \ 618 decode_putrootfh_maxsz + \ 619 decode_getattr_maxsz + \ 620 decode_getfh_maxsz) 621#define NFS4_enc_remove_sz (compound_encode_hdr_maxsz + \ 622 encode_sequence_maxsz + \ 623 encode_putfh_maxsz + \ 624 encode_remove_maxsz) 625#define NFS4_dec_remove_sz (compound_decode_hdr_maxsz + \ 626 decode_sequence_maxsz + \ 627 decode_putfh_maxsz + \ 628 decode_remove_maxsz) 629#define NFS4_enc_rename_sz (compound_encode_hdr_maxsz + \ 630 encode_sequence_maxsz + \ 631 encode_putfh_maxsz + \ 632 encode_savefh_maxsz + \ 633 encode_putfh_maxsz + \ 634 encode_rename_maxsz) 635#define NFS4_dec_rename_sz (compound_decode_hdr_maxsz + \ 636 decode_sequence_maxsz + \ 637 decode_putfh_maxsz + \ 638 decode_savefh_maxsz + \ 639 decode_putfh_maxsz + \ 640 decode_rename_maxsz) 641#define NFS4_enc_link_sz (compound_encode_hdr_maxsz + \ 642 encode_sequence_maxsz + \ 643 encode_putfh_maxsz + \ 644 encode_savefh_maxsz + \ 645 encode_putfh_maxsz + \ 646 encode_link_maxsz + \ 647 encode_restorefh_maxsz + \ 648 encode_getattr_maxsz) 649#define NFS4_dec_link_sz (compound_decode_hdr_maxsz + \ 650 decode_sequence_maxsz + \ 651 decode_putfh_maxsz + \ 652 decode_savefh_maxsz + \ 653 decode_putfh_maxsz + \ 654 decode_link_maxsz + \ 655 decode_restorefh_maxsz + \ 656 decode_getattr_maxsz) 657#define NFS4_enc_symlink_sz (compound_encode_hdr_maxsz + \ 658 encode_sequence_maxsz + \ 659 encode_putfh_maxsz + \ 660 encode_symlink_maxsz + \ 661 encode_getattr_maxsz + \ 662 encode_getfh_maxsz) 663#define NFS4_dec_symlink_sz (compound_decode_hdr_maxsz + \ 664 decode_sequence_maxsz + \ 665 decode_putfh_maxsz + \ 666 decode_symlink_maxsz + \ 667 decode_getattr_maxsz + \ 668 decode_getfh_maxsz) 669#define NFS4_enc_create_sz (compound_encode_hdr_maxsz + \ 670 encode_sequence_maxsz + \ 671 encode_putfh_maxsz + \ 672 encode_create_maxsz + \ 673 encode_getfh_maxsz + \ 674 encode_getattr_maxsz) 675#define NFS4_dec_create_sz (compound_decode_hdr_maxsz + \ 676 decode_sequence_maxsz + \ 677 decode_putfh_maxsz + \ 678 decode_create_maxsz + \ 679 decode_getfh_maxsz + \ 680 decode_getattr_maxsz) 681#define NFS4_enc_pathconf_sz (compound_encode_hdr_maxsz + \ 682 encode_sequence_maxsz + \ 683 encode_putfh_maxsz + \ 684 encode_getattr_maxsz) 685#define NFS4_dec_pathconf_sz (compound_decode_hdr_maxsz + \ 686 decode_sequence_maxsz + \ 687 decode_putfh_maxsz + \ 688 decode_getattr_maxsz) 689#define NFS4_enc_statfs_sz (compound_encode_hdr_maxsz + \ 690 encode_sequence_maxsz + \ 691 encode_putfh_maxsz + \ 692 encode_statfs_maxsz) 693#define NFS4_dec_statfs_sz (compound_decode_hdr_maxsz + \ 694 decode_sequence_maxsz + \ 695 decode_putfh_maxsz + \ 696 decode_statfs_maxsz) 697#define NFS4_enc_server_caps_sz (compound_encode_hdr_maxsz + \ 698 encode_sequence_maxsz + \ 699 encode_putfh_maxsz + \ 700 encode_getattr_maxsz) 701#define NFS4_dec_server_caps_sz (compound_decode_hdr_maxsz + \ 702 decode_sequence_maxsz + \ 703 decode_putfh_maxsz + \ 704 decode_getattr_maxsz) 705#define NFS4_enc_delegreturn_sz (compound_encode_hdr_maxsz + \ 706 encode_sequence_maxsz + \ 707 encode_putfh_maxsz + \ 708 encode_delegreturn_maxsz + \ 709 encode_getattr_maxsz) 710#define NFS4_dec_delegreturn_sz (compound_decode_hdr_maxsz + \ 711 decode_sequence_maxsz + \ 712 decode_delegreturn_maxsz + \ 713 decode_getattr_maxsz) 714#define NFS4_enc_getacl_sz (compound_encode_hdr_maxsz + \ 715 encode_sequence_maxsz + \ 716 encode_putfh_maxsz + \ 717 encode_getacl_maxsz) 718#define NFS4_dec_getacl_sz (compound_decode_hdr_maxsz + \ 719 decode_sequence_maxsz + \ 720 decode_putfh_maxsz + \ 721 decode_getacl_maxsz) 722#define NFS4_enc_setacl_sz (compound_encode_hdr_maxsz + \ 723 encode_sequence_maxsz + \ 724 encode_putfh_maxsz + \ 725 encode_setacl_maxsz) 726#define NFS4_dec_setacl_sz (compound_decode_hdr_maxsz + \ 727 decode_sequence_maxsz + \ 728 decode_putfh_maxsz + \ 729 decode_setacl_maxsz) 730#define NFS4_enc_fs_locations_sz \ 731 (compound_encode_hdr_maxsz + \ 732 encode_sequence_maxsz + \ 733 encode_putfh_maxsz + \ 734 encode_lookup_maxsz + \ 735 encode_fs_locations_maxsz + \ 736 encode_renew_maxsz) 737#define NFS4_dec_fs_locations_sz \ 738 (compound_decode_hdr_maxsz + \ 739 decode_sequence_maxsz + \ 740 decode_putfh_maxsz + \ 741 decode_lookup_maxsz + \ 742 decode_fs_locations_maxsz + \ 743 decode_renew_maxsz) 744#define NFS4_enc_secinfo_sz (compound_encode_hdr_maxsz + \ 745 encode_sequence_maxsz + \ 746 encode_putfh_maxsz + \ 747 encode_secinfo_maxsz) 748#define NFS4_dec_secinfo_sz (compound_decode_hdr_maxsz + \ 749 decode_sequence_maxsz + \ 750 decode_putfh_maxsz + \ 751 decode_secinfo_maxsz) 752#define NFS4_enc_fsid_present_sz \ 753 (compound_encode_hdr_maxsz + \ 754 encode_sequence_maxsz + \ 755 encode_putfh_maxsz + \ 756 encode_getfh_maxsz + \ 757 encode_renew_maxsz) 758#define NFS4_dec_fsid_present_sz \ 759 (compound_decode_hdr_maxsz + \ 760 decode_sequence_maxsz + \ 761 decode_putfh_maxsz + \ 762 decode_getfh_maxsz + \ 763 decode_renew_maxsz) 764#if defined(CONFIG_NFS_V4_1) 765#define NFS4_enc_bind_conn_to_session_sz \ 766 (compound_encode_hdr_maxsz + \ 767 encode_bind_conn_to_session_maxsz) 768#define NFS4_dec_bind_conn_to_session_sz \ 769 (compound_decode_hdr_maxsz + \ 770 decode_bind_conn_to_session_maxsz) 771#define NFS4_enc_exchange_id_sz \ 772 (compound_encode_hdr_maxsz + \ 773 encode_exchange_id_maxsz) 774#define NFS4_dec_exchange_id_sz \ 775 (compound_decode_hdr_maxsz + \ 776 decode_exchange_id_maxsz) 777#define NFS4_enc_create_session_sz \ 778 (compound_encode_hdr_maxsz + \ 779 encode_create_session_maxsz) 780#define NFS4_dec_create_session_sz \ 781 (compound_decode_hdr_maxsz + \ 782 decode_create_session_maxsz) 783#define NFS4_enc_destroy_session_sz (compound_encode_hdr_maxsz + \ 784 encode_destroy_session_maxsz) 785#define NFS4_dec_destroy_session_sz (compound_decode_hdr_maxsz + \ 786 decode_destroy_session_maxsz) 787#define NFS4_enc_destroy_clientid_sz (compound_encode_hdr_maxsz + \ 788 encode_destroy_clientid_maxsz) 789#define NFS4_dec_destroy_clientid_sz (compound_decode_hdr_maxsz + \ 790 decode_destroy_clientid_maxsz) 791#define NFS4_enc_sequence_sz \ 792 (compound_decode_hdr_maxsz + \ 793 encode_sequence_maxsz) 794#define NFS4_dec_sequence_sz \ 795 (compound_decode_hdr_maxsz + \ 796 decode_sequence_maxsz) 797#define NFS4_enc_get_lease_time_sz (compound_encode_hdr_maxsz + \ 798 encode_sequence_maxsz + \ 799 encode_putrootfh_maxsz + \ 800 encode_fsinfo_maxsz) 801#define NFS4_dec_get_lease_time_sz (compound_decode_hdr_maxsz + \ 802 decode_sequence_maxsz + \ 803 decode_putrootfh_maxsz + \ 804 decode_fsinfo_maxsz) 805#define NFS4_enc_reclaim_complete_sz (compound_encode_hdr_maxsz + \ 806 encode_sequence_maxsz + \ 807 encode_reclaim_complete_maxsz) 808#define NFS4_dec_reclaim_complete_sz (compound_decode_hdr_maxsz + \ 809 decode_sequence_maxsz + \ 810 decode_reclaim_complete_maxsz) 811#define NFS4_enc_getdeviceinfo_sz (compound_encode_hdr_maxsz + \ 812 encode_sequence_maxsz +\ 813 encode_getdeviceinfo_maxsz) 814#define NFS4_dec_getdeviceinfo_sz (compound_decode_hdr_maxsz + \ 815 decode_sequence_maxsz + \ 816 decode_getdeviceinfo_maxsz) 817#define NFS4_enc_layoutget_sz (compound_encode_hdr_maxsz + \ 818 encode_sequence_maxsz + \ 819 encode_putfh_maxsz + \ 820 encode_layoutget_maxsz) 821#define NFS4_dec_layoutget_sz (compound_decode_hdr_maxsz + \ 822 decode_sequence_maxsz + \ 823 decode_putfh_maxsz + \ 824 decode_layoutget_maxsz) 825#define NFS4_enc_layoutcommit_sz (compound_encode_hdr_maxsz + \ 826 encode_sequence_maxsz +\ 827 encode_putfh_maxsz + \ 828 encode_layoutcommit_maxsz + \ 829 encode_getattr_maxsz) 830#define NFS4_dec_layoutcommit_sz (compound_decode_hdr_maxsz + \ 831 decode_sequence_maxsz + \ 832 decode_putfh_maxsz + \ 833 decode_layoutcommit_maxsz + \ 834 decode_getattr_maxsz) 835#define NFS4_enc_layoutreturn_sz (compound_encode_hdr_maxsz + \ 836 encode_sequence_maxsz + \ 837 encode_putfh_maxsz + \ 838 encode_layoutreturn_maxsz) 839#define NFS4_dec_layoutreturn_sz (compound_decode_hdr_maxsz + \ 840 decode_sequence_maxsz + \ 841 decode_putfh_maxsz + \ 842 decode_layoutreturn_maxsz) 843#define NFS4_enc_secinfo_no_name_sz (compound_encode_hdr_maxsz + \ 844 encode_sequence_maxsz + \ 845 encode_putrootfh_maxsz +\ 846 encode_secinfo_no_name_maxsz) 847#define NFS4_dec_secinfo_no_name_sz (compound_decode_hdr_maxsz + \ 848 decode_sequence_maxsz + \ 849 decode_putrootfh_maxsz + \ 850 decode_secinfo_no_name_maxsz) 851#define NFS4_enc_test_stateid_sz (compound_encode_hdr_maxsz + \ 852 encode_sequence_maxsz + \ 853 encode_test_stateid_maxsz) 854#define NFS4_dec_test_stateid_sz (compound_decode_hdr_maxsz + \ 855 decode_sequence_maxsz + \ 856 decode_test_stateid_maxsz) 857#define NFS4_enc_free_stateid_sz (compound_encode_hdr_maxsz + \ 858 encode_sequence_maxsz + \ 859 encode_free_stateid_maxsz) 860#define NFS4_dec_free_stateid_sz (compound_decode_hdr_maxsz + \ 861 decode_sequence_maxsz + \ 862 decode_free_stateid_maxsz) 863 864const u32 nfs41_maxwrite_overhead = ((RPC_MAX_HEADER_WITH_AUTH + 865 compound_encode_hdr_maxsz + 866 encode_sequence_maxsz + 867 encode_putfh_maxsz + 868 encode_getattr_maxsz) * 869 XDR_UNIT); 870 871const u32 nfs41_maxread_overhead = ((RPC_MAX_HEADER_WITH_AUTH + 872 compound_decode_hdr_maxsz + 873 decode_sequence_maxsz + 874 decode_putfh_maxsz) * 875 XDR_UNIT); 876 877const u32 nfs41_maxgetdevinfo_overhead = ((RPC_MAX_REPHEADER_WITH_AUTH + 878 compound_decode_hdr_maxsz + 879 decode_sequence_maxsz) * 880 XDR_UNIT); 881EXPORT_SYMBOL_GPL(nfs41_maxgetdevinfo_overhead); 882#endif /* CONFIG_NFS_V4_1 */ 883 884static const umode_t nfs_type2fmt[] = { 885 [NF4BAD] = 0, 886 [NF4REG] = S_IFREG, 887 [NF4DIR] = S_IFDIR, 888 [NF4BLK] = S_IFBLK, 889 [NF4CHR] = S_IFCHR, 890 [NF4LNK] = S_IFLNK, 891 [NF4SOCK] = S_IFSOCK, 892 [NF4FIFO] = S_IFIFO, 893 [NF4ATTRDIR] = 0, 894 [NF4NAMEDATTR] = 0, 895}; 896 897struct compound_hdr { 898 int32_t status; 899 uint32_t nops; 900 __be32 * nops_p; 901 uint32_t taglen; 902 char * tag; 903 uint32_t replen; /* expected reply words */ 904 u32 minorversion; 905}; 906 907static __be32 *reserve_space(struct xdr_stream *xdr, size_t nbytes) 908{ 909 __be32 *p = xdr_reserve_space(xdr, nbytes); 910 BUG_ON(!p); 911 return p; 912} 913 914static void encode_opaque_fixed(struct xdr_stream *xdr, const void *buf, size_t len) 915{ 916 __be32 *p; 917 918 p = xdr_reserve_space(xdr, len); 919 xdr_encode_opaque_fixed(p, buf, len); 920} 921 922static void encode_string(struct xdr_stream *xdr, unsigned int len, const char *str) 923{ 924 __be32 *p; 925 926 p = reserve_space(xdr, 4 + len); 927 xdr_encode_opaque(p, str, len); 928} 929 930static void encode_uint32(struct xdr_stream *xdr, u32 n) 931{ 932 __be32 *p; 933 934 p = reserve_space(xdr, 4); 935 *p = cpu_to_be32(n); 936} 937 938static void encode_uint64(struct xdr_stream *xdr, u64 n) 939{ 940 __be32 *p; 941 942 p = reserve_space(xdr, 8); 943 xdr_encode_hyper(p, n); 944} 945 946static void encode_nfs4_seqid(struct xdr_stream *xdr, 947 const struct nfs_seqid *seqid) 948{ 949 if (seqid != NULL) 950 encode_uint32(xdr, seqid->sequence->counter); 951 else 952 encode_uint32(xdr, 0); 953} 954 955static void encode_compound_hdr(struct xdr_stream *xdr, 956 struct rpc_rqst *req, 957 struct compound_hdr *hdr) 958{ 959 __be32 *p; 960 struct rpc_auth *auth = req->rq_cred->cr_auth; 961 962 /* initialize running count of expected bytes in reply. 963 * NOTE: the replied tag SHOULD be the same is the one sent, 964 * but this is not required as a MUST for the server to do so. */ 965 hdr->replen = RPC_REPHDRSIZE + auth->au_rslack + 3 + hdr->taglen; 966 967 WARN_ON_ONCE(hdr->taglen > NFS4_MAXTAGLEN); 968 encode_string(xdr, hdr->taglen, hdr->tag); 969 p = reserve_space(xdr, 8); 970 *p++ = cpu_to_be32(hdr->minorversion); 971 hdr->nops_p = p; 972 *p = cpu_to_be32(hdr->nops); 973} 974 975static void encode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 op, 976 uint32_t replen, 977 struct compound_hdr *hdr) 978{ 979 encode_uint32(xdr, op); 980 hdr->nops++; 981 hdr->replen += replen; 982} 983 984static void encode_nops(struct compound_hdr *hdr) 985{ 986 WARN_ON_ONCE(hdr->nops > NFS4_MAX_OPS); 987 *hdr->nops_p = htonl(hdr->nops); 988} 989 990static void encode_nfs4_stateid(struct xdr_stream *xdr, const nfs4_stateid *stateid) 991{ 992 encode_opaque_fixed(xdr, stateid, NFS4_STATEID_SIZE); 993} 994 995static void encode_nfs4_verifier(struct xdr_stream *xdr, const nfs4_verifier *verf) 996{ 997 encode_opaque_fixed(xdr, verf->data, NFS4_VERIFIER_SIZE); 998} 999 1000static void encode_attrs(struct xdr_stream *xdr, const struct iattr *iap, 1001 const struct nfs4_label *label, 1002 const struct nfs_server *server) 1003{ 1004 char owner_name[IDMAP_NAMESZ]; 1005 char owner_group[IDMAP_NAMESZ]; 1006 int owner_namelen = 0; 1007 int owner_grouplen = 0; 1008 __be32 *p; 1009 unsigned i; 1010 uint32_t len = 0; 1011 uint32_t bmval_len; 1012 uint32_t bmval[3] = { 0 }; 1013 1014 /* 1015 * We reserve enough space to write the entire attribute buffer at once. 1016 * In the worst-case, this would be 1017 * 16(bitmap) + 4(attrlen) + 8(size) + 4(mode) + 4(atime) + 4(mtime) 1018 * = 40 bytes, plus any contribution from variable-length fields 1019 * such as owner/group. 1020 */ 1021 if (iap->ia_valid & ATTR_SIZE) { 1022 bmval[0] |= FATTR4_WORD0_SIZE; 1023 len += 8; 1024 } 1025 if (iap->ia_valid & ATTR_MODE) { 1026 bmval[1] |= FATTR4_WORD1_MODE; 1027 len += 4; 1028 } 1029 if (iap->ia_valid & ATTR_UID) { 1030 owner_namelen = nfs_map_uid_to_name(server, iap->ia_uid, owner_name, IDMAP_NAMESZ); 1031 if (owner_namelen < 0) { 1032 dprintk("nfs: couldn't resolve uid %d to string\n", 1033 from_kuid(&init_user_ns, iap->ia_uid)); 1034 /* XXX */ 1035 strcpy(owner_name, "nobody"); 1036 owner_namelen = sizeof("nobody") - 1; 1037 /* goto out; */ 1038 } 1039 bmval[1] |= FATTR4_WORD1_OWNER; 1040 len += 4 + (XDR_QUADLEN(owner_namelen) << 2); 1041 } 1042 if (iap->ia_valid & ATTR_GID) { 1043 owner_grouplen = nfs_map_gid_to_group(server, iap->ia_gid, owner_group, IDMAP_NAMESZ); 1044 if (owner_grouplen < 0) { 1045 dprintk("nfs: couldn't resolve gid %d to string\n", 1046 from_kgid(&init_user_ns, iap->ia_gid)); 1047 strcpy(owner_group, "nobody"); 1048 owner_grouplen = sizeof("nobody") - 1; 1049 /* goto out; */ 1050 } 1051 bmval[1] |= FATTR4_WORD1_OWNER_GROUP; 1052 len += 4 + (XDR_QUADLEN(owner_grouplen) << 2); 1053 } 1054 if (iap->ia_valid & ATTR_ATIME_SET) { 1055 bmval[1] |= FATTR4_WORD1_TIME_ACCESS_SET; 1056 len += 16; 1057 } else if (iap->ia_valid & ATTR_ATIME) { 1058 bmval[1] |= FATTR4_WORD1_TIME_ACCESS_SET; 1059 len += 4; 1060 } 1061 if (iap->ia_valid & ATTR_MTIME_SET) { 1062 bmval[1] |= FATTR4_WORD1_TIME_MODIFY_SET; 1063 len += 16; 1064 } else if (iap->ia_valid & ATTR_MTIME) { 1065 bmval[1] |= FATTR4_WORD1_TIME_MODIFY_SET; 1066 len += 4; 1067 } 1068 if (label) { 1069 len += 4 + 4 + 4 + (XDR_QUADLEN(label->len) << 2); 1070 bmval[2] |= FATTR4_WORD2_SECURITY_LABEL; 1071 } 1072 1073 if (bmval[2] != 0) 1074 bmval_len = 3; 1075 else if (bmval[1] != 0) 1076 bmval_len = 2; 1077 else 1078 bmval_len = 1; 1079 1080 p = reserve_space(xdr, 4 + (bmval_len << 2) + 4 + len); 1081 1082 *p++ = cpu_to_be32(bmval_len); 1083 for (i = 0; i < bmval_len; i++) 1084 *p++ = cpu_to_be32(bmval[i]); 1085 *p++ = cpu_to_be32(len); 1086 1087 if (bmval[0] & FATTR4_WORD0_SIZE) 1088 p = xdr_encode_hyper(p, iap->ia_size); 1089 if (bmval[1] & FATTR4_WORD1_MODE) 1090 *p++ = cpu_to_be32(iap->ia_mode & S_IALLUGO); 1091 if (bmval[1] & FATTR4_WORD1_OWNER) 1092 p = xdr_encode_opaque(p, owner_name, owner_namelen); 1093 if (bmval[1] & FATTR4_WORD1_OWNER_GROUP) 1094 p = xdr_encode_opaque(p, owner_group, owner_grouplen); 1095 if (bmval[1] & FATTR4_WORD1_TIME_ACCESS_SET) { 1096 if (iap->ia_valid & ATTR_ATIME_SET) { 1097 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME); 1098 p = xdr_encode_hyper(p, (s64)iap->ia_atime.tv_sec); 1099 *p++ = cpu_to_be32(iap->ia_atime.tv_nsec); 1100 } else 1101 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME); 1102 } 1103 if (bmval[1] & FATTR4_WORD1_TIME_MODIFY_SET) { 1104 if (iap->ia_valid & ATTR_MTIME_SET) { 1105 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME); 1106 p = xdr_encode_hyper(p, (s64)iap->ia_mtime.tv_sec); 1107 *p++ = cpu_to_be32(iap->ia_mtime.tv_nsec); 1108 } else 1109 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME); 1110 } 1111 if (bmval[2] & FATTR4_WORD2_SECURITY_LABEL) { 1112 *p++ = cpu_to_be32(label->lfs); 1113 *p++ = cpu_to_be32(label->pi); 1114 *p++ = cpu_to_be32(label->len); 1115 p = xdr_encode_opaque_fixed(p, label->label, label->len); 1116 } 1117 1118/* out: */ 1119} 1120 1121static void encode_access(struct xdr_stream *xdr, u32 access, struct compound_hdr *hdr) 1122{ 1123 encode_op_hdr(xdr, OP_ACCESS, decode_access_maxsz, hdr); 1124 encode_uint32(xdr, access); 1125} 1126 1127static void encode_close(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr) 1128{ 1129 encode_op_hdr(xdr, OP_CLOSE, decode_close_maxsz, hdr); 1130 encode_nfs4_seqid(xdr, arg->seqid); 1131 encode_nfs4_stateid(xdr, &arg->stateid); 1132} 1133 1134static void encode_commit(struct xdr_stream *xdr, const struct nfs_commitargs *args, struct compound_hdr *hdr) 1135{ 1136 __be32 *p; 1137 1138 encode_op_hdr(xdr, OP_COMMIT, decode_commit_maxsz, hdr); 1139 p = reserve_space(xdr, 12); 1140 p = xdr_encode_hyper(p, args->offset); 1141 *p = cpu_to_be32(args->count); 1142} 1143 1144static void encode_create(struct xdr_stream *xdr, const struct nfs4_create_arg *create, struct compound_hdr *hdr) 1145{ 1146 __be32 *p; 1147 1148 encode_op_hdr(xdr, OP_CREATE, decode_create_maxsz, hdr); 1149 encode_uint32(xdr, create->ftype); 1150 1151 switch (create->ftype) { 1152 case NF4LNK: 1153 p = reserve_space(xdr, 4); 1154 *p = cpu_to_be32(create->u.symlink.len); 1155 xdr_write_pages(xdr, create->u.symlink.pages, 0, create->u.symlink.len); 1156 break; 1157 1158 case NF4BLK: case NF4CHR: 1159 p = reserve_space(xdr, 8); 1160 *p++ = cpu_to_be32(create->u.device.specdata1); 1161 *p = cpu_to_be32(create->u.device.specdata2); 1162 break; 1163 1164 default: 1165 break; 1166 } 1167 1168 encode_string(xdr, create->name->len, create->name->name); 1169 encode_attrs(xdr, create->attrs, create->label, create->server); 1170} 1171 1172static void encode_getattr_one(struct xdr_stream *xdr, uint32_t bitmap, struct compound_hdr *hdr) 1173{ 1174 __be32 *p; 1175 1176 encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr); 1177 p = reserve_space(xdr, 8); 1178 *p++ = cpu_to_be32(1); 1179 *p = cpu_to_be32(bitmap); 1180} 1181 1182static void encode_getattr_two(struct xdr_stream *xdr, uint32_t bm0, uint32_t bm1, struct compound_hdr *hdr) 1183{ 1184 __be32 *p; 1185 1186 encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr); 1187 p = reserve_space(xdr, 12); 1188 *p++ = cpu_to_be32(2); 1189 *p++ = cpu_to_be32(bm0); 1190 *p = cpu_to_be32(bm1); 1191} 1192 1193static void 1194encode_getattr_three(struct xdr_stream *xdr, 1195 uint32_t bm0, uint32_t bm1, uint32_t bm2, 1196 struct compound_hdr *hdr) 1197{ 1198 __be32 *p; 1199 1200 encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr); 1201 if (bm2) { 1202 p = reserve_space(xdr, 16); 1203 *p++ = cpu_to_be32(3); 1204 *p++ = cpu_to_be32(bm0); 1205 *p++ = cpu_to_be32(bm1); 1206 *p = cpu_to_be32(bm2); 1207 } else if (bm1) { 1208 p = reserve_space(xdr, 12); 1209 *p++ = cpu_to_be32(2); 1210 *p++ = cpu_to_be32(bm0); 1211 *p = cpu_to_be32(bm1); 1212 } else { 1213 p = reserve_space(xdr, 8); 1214 *p++ = cpu_to_be32(1); 1215 *p = cpu_to_be32(bm0); 1216 } 1217} 1218 1219static void encode_getfattr(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr) 1220{ 1221 encode_getattr_three(xdr, bitmask[0] & nfs4_fattr_bitmap[0], 1222 bitmask[1] & nfs4_fattr_bitmap[1], 1223 bitmask[2] & nfs4_fattr_bitmap[2], 1224 hdr); 1225} 1226 1227static void encode_getfattr_open(struct xdr_stream *xdr, const u32 *bitmask, 1228 const u32 *open_bitmap, 1229 struct compound_hdr *hdr) 1230{ 1231 encode_getattr_three(xdr, 1232 bitmask[0] & open_bitmap[0], 1233 bitmask[1] & open_bitmap[1], 1234 bitmask[2] & open_bitmap[2], 1235 hdr); 1236} 1237 1238static void encode_fsinfo(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr) 1239{ 1240 encode_getattr_three(xdr, 1241 bitmask[0] & nfs4_fsinfo_bitmap[0], 1242 bitmask[1] & nfs4_fsinfo_bitmap[1], 1243 bitmask[2] & nfs4_fsinfo_bitmap[2], 1244 hdr); 1245} 1246 1247static void encode_fs_locations(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr) 1248{ 1249 encode_getattr_two(xdr, bitmask[0] & nfs4_fs_locations_bitmap[0], 1250 bitmask[1] & nfs4_fs_locations_bitmap[1], hdr); 1251} 1252 1253static void encode_getfh(struct xdr_stream *xdr, struct compound_hdr *hdr) 1254{ 1255 encode_op_hdr(xdr, OP_GETFH, decode_getfh_maxsz, hdr); 1256} 1257 1258static void encode_link(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr) 1259{ 1260 encode_op_hdr(xdr, OP_LINK, decode_link_maxsz, hdr); 1261 encode_string(xdr, name->len, name->name); 1262} 1263 1264static inline int nfs4_lock_type(struct file_lock *fl, int block) 1265{ 1266 if (fl->fl_type == F_RDLCK) 1267 return block ? NFS4_READW_LT : NFS4_READ_LT; 1268 return block ? NFS4_WRITEW_LT : NFS4_WRITE_LT; 1269} 1270 1271static inline uint64_t nfs4_lock_length(struct file_lock *fl) 1272{ 1273 if (fl->fl_end == OFFSET_MAX) 1274 return ~(uint64_t)0; 1275 return fl->fl_end - fl->fl_start + 1; 1276} 1277 1278static void encode_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner) 1279{ 1280 __be32 *p; 1281 1282 p = reserve_space(xdr, 32); 1283 p = xdr_encode_hyper(p, lowner->clientid); 1284 *p++ = cpu_to_be32(20); 1285 p = xdr_encode_opaque_fixed(p, "lock id:", 8); 1286 *p++ = cpu_to_be32(lowner->s_dev); 1287 xdr_encode_hyper(p, lowner->id); 1288} 1289 1290/* 1291 * opcode,type,reclaim,offset,length,new_lock_owner = 32 1292 * open_seqid,open_stateid,lock_seqid,lock_owner.clientid, lock_owner.id = 40 1293 */ 1294static void encode_lock(struct xdr_stream *xdr, const struct nfs_lock_args *args, struct compound_hdr *hdr) 1295{ 1296 __be32 *p; 1297 1298 encode_op_hdr(xdr, OP_LOCK, decode_lock_maxsz, hdr); 1299 p = reserve_space(xdr, 28); 1300 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, args->block)); 1301 *p++ = cpu_to_be32(args->reclaim); 1302 p = xdr_encode_hyper(p, args->fl->fl_start); 1303 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl)); 1304 *p = cpu_to_be32(args->new_lock_owner); 1305 if (args->new_lock_owner){ 1306 encode_nfs4_seqid(xdr, args->open_seqid); 1307 encode_nfs4_stateid(xdr, &args->open_stateid); 1308 encode_nfs4_seqid(xdr, args->lock_seqid); 1309 encode_lockowner(xdr, &args->lock_owner); 1310 } 1311 else { 1312 encode_nfs4_stateid(xdr, &args->lock_stateid); 1313 encode_nfs4_seqid(xdr, args->lock_seqid); 1314 } 1315} 1316 1317static void encode_lockt(struct xdr_stream *xdr, const struct nfs_lockt_args *args, struct compound_hdr *hdr) 1318{ 1319 __be32 *p; 1320 1321 encode_op_hdr(xdr, OP_LOCKT, decode_lockt_maxsz, hdr); 1322 p = reserve_space(xdr, 20); 1323 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, 0)); 1324 p = xdr_encode_hyper(p, args->fl->fl_start); 1325 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl)); 1326 encode_lockowner(xdr, &args->lock_owner); 1327} 1328 1329static void encode_locku(struct xdr_stream *xdr, const struct nfs_locku_args *args, struct compound_hdr *hdr) 1330{ 1331 __be32 *p; 1332 1333 encode_op_hdr(xdr, OP_LOCKU, decode_locku_maxsz, hdr); 1334 encode_uint32(xdr, nfs4_lock_type(args->fl, 0)); 1335 encode_nfs4_seqid(xdr, args->seqid); 1336 encode_nfs4_stateid(xdr, &args->stateid); 1337 p = reserve_space(xdr, 16); 1338 p = xdr_encode_hyper(p, args->fl->fl_start); 1339 xdr_encode_hyper(p, nfs4_lock_length(args->fl)); 1340} 1341 1342static void encode_release_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner, struct compound_hdr *hdr) 1343{ 1344 encode_op_hdr(xdr, OP_RELEASE_LOCKOWNER, decode_release_lockowner_maxsz, hdr); 1345 encode_lockowner(xdr, lowner); 1346} 1347 1348static void encode_lookup(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr) 1349{ 1350 encode_op_hdr(xdr, OP_LOOKUP, decode_lookup_maxsz, hdr); 1351 encode_string(xdr, name->len, name->name); 1352} 1353 1354static void encode_share_access(struct xdr_stream *xdr, u32 share_access) 1355{ 1356 __be32 *p; 1357 1358 p = reserve_space(xdr, 8); 1359 *p++ = cpu_to_be32(share_access); 1360 *p = cpu_to_be32(0); /* for linux, share_deny = 0 always */ 1361} 1362 1363static inline void encode_openhdr(struct xdr_stream *xdr, const struct nfs_openargs *arg) 1364{ 1365 __be32 *p; 1366 /* 1367 * opcode 4, seqid 4, share_access 4, share_deny 4, clientid 8, ownerlen 4, 1368 * owner 4 = 32 1369 */ 1370 encode_nfs4_seqid(xdr, arg->seqid); 1371 encode_share_access(xdr, arg->share_access); 1372 p = reserve_space(xdr, 36); 1373 p = xdr_encode_hyper(p, arg->clientid); 1374 *p++ = cpu_to_be32(24); 1375 p = xdr_encode_opaque_fixed(p, "open id:", 8); 1376 *p++ = cpu_to_be32(arg->server->s_dev); 1377 *p++ = cpu_to_be32(arg->id.uniquifier); 1378 xdr_encode_hyper(p, arg->id.create_time); 1379} 1380 1381static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_openargs *arg) 1382{ 1383 struct iattr dummy; 1384 __be32 *p; 1385 1386 p = reserve_space(xdr, 4); 1387 switch(arg->createmode) { 1388 case NFS4_CREATE_UNCHECKED: 1389 *p = cpu_to_be32(NFS4_CREATE_UNCHECKED); 1390 encode_attrs(xdr, arg->u.attrs, arg->label, arg->server); 1391 break; 1392 case NFS4_CREATE_GUARDED: 1393 *p = cpu_to_be32(NFS4_CREATE_GUARDED); 1394 encode_attrs(xdr, arg->u.attrs, arg->label, arg->server); 1395 break; 1396 case NFS4_CREATE_EXCLUSIVE: 1397 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE); 1398 encode_nfs4_verifier(xdr, &arg->u.verifier); 1399 break; 1400 case NFS4_CREATE_EXCLUSIVE4_1: 1401 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE4_1); 1402 encode_nfs4_verifier(xdr, &arg->u.verifier); 1403 dummy.ia_valid = 0; 1404 encode_attrs(xdr, &dummy, arg->label, arg->server); 1405 } 1406} 1407 1408static void encode_opentype(struct xdr_stream *xdr, const struct nfs_openargs *arg) 1409{ 1410 __be32 *p; 1411 1412 p = reserve_space(xdr, 4); 1413 switch (arg->open_flags & O_CREAT) { 1414 case 0: 1415 *p = cpu_to_be32(NFS4_OPEN_NOCREATE); 1416 break; 1417 default: 1418 *p = cpu_to_be32(NFS4_OPEN_CREATE); 1419 encode_createmode(xdr, arg); 1420 } 1421} 1422 1423static inline void encode_delegation_type(struct xdr_stream *xdr, fmode_t delegation_type) 1424{ 1425 __be32 *p; 1426 1427 p = reserve_space(xdr, 4); 1428 switch (delegation_type) { 1429 case 0: 1430 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_NONE); 1431 break; 1432 case FMODE_READ: 1433 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_READ); 1434 break; 1435 case FMODE_WRITE|FMODE_READ: 1436 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_WRITE); 1437 break; 1438 default: 1439 BUG(); 1440 } 1441} 1442 1443static inline void encode_claim_null(struct xdr_stream *xdr, const struct qstr *name) 1444{ 1445 __be32 *p; 1446 1447 p = reserve_space(xdr, 4); 1448 *p = cpu_to_be32(NFS4_OPEN_CLAIM_NULL); 1449 encode_string(xdr, name->len, name->name); 1450} 1451 1452static inline void encode_claim_previous(struct xdr_stream *xdr, fmode_t type) 1453{ 1454 __be32 *p; 1455 1456 p = reserve_space(xdr, 4); 1457 *p = cpu_to_be32(NFS4_OPEN_CLAIM_PREVIOUS); 1458 encode_delegation_type(xdr, type); 1459} 1460 1461static inline void encode_claim_delegate_cur(struct xdr_stream *xdr, const struct qstr *name, const nfs4_stateid *stateid) 1462{ 1463 __be32 *p; 1464 1465 p = reserve_space(xdr, 4); 1466 *p = cpu_to_be32(NFS4_OPEN_CLAIM_DELEGATE_CUR); 1467 encode_nfs4_stateid(xdr, stateid); 1468 encode_string(xdr, name->len, name->name); 1469} 1470 1471static inline void encode_claim_fh(struct xdr_stream *xdr) 1472{ 1473 __be32 *p; 1474 1475 p = reserve_space(xdr, 4); 1476 *p = cpu_to_be32(NFS4_OPEN_CLAIM_FH); 1477} 1478 1479static inline void encode_claim_delegate_cur_fh(struct xdr_stream *xdr, const nfs4_stateid *stateid) 1480{ 1481 __be32 *p; 1482 1483 p = reserve_space(xdr, 4); 1484 *p = cpu_to_be32(NFS4_OPEN_CLAIM_DELEG_CUR_FH); 1485 encode_nfs4_stateid(xdr, stateid); 1486} 1487 1488static void encode_open(struct xdr_stream *xdr, const struct nfs_openargs *arg, struct compound_hdr *hdr) 1489{ 1490 encode_op_hdr(xdr, OP_OPEN, decode_open_maxsz, hdr); 1491 encode_openhdr(xdr, arg); 1492 encode_opentype(xdr, arg); 1493 switch (arg->claim) { 1494 case NFS4_OPEN_CLAIM_NULL: 1495 encode_claim_null(xdr, arg->name); 1496 break; 1497 case NFS4_OPEN_CLAIM_PREVIOUS: 1498 encode_claim_previous(xdr, arg->u.delegation_type); 1499 break; 1500 case NFS4_OPEN_CLAIM_DELEGATE_CUR: 1501 encode_claim_delegate_cur(xdr, arg->name, &arg->u.delegation); 1502 break; 1503 case NFS4_OPEN_CLAIM_FH: 1504 encode_claim_fh(xdr); 1505 break; 1506 case NFS4_OPEN_CLAIM_DELEG_CUR_FH: 1507 encode_claim_delegate_cur_fh(xdr, &arg->u.delegation); 1508 break; 1509 default: 1510 BUG(); 1511 } 1512} 1513 1514static void encode_open_confirm(struct xdr_stream *xdr, const struct nfs_open_confirmargs *arg, struct compound_hdr *hdr) 1515{ 1516 encode_op_hdr(xdr, OP_OPEN_CONFIRM, decode_open_confirm_maxsz, hdr); 1517 encode_nfs4_stateid(xdr, arg->stateid); 1518 encode_nfs4_seqid(xdr, arg->seqid); 1519} 1520 1521static void encode_open_downgrade(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr) 1522{ 1523 encode_op_hdr(xdr, OP_OPEN_DOWNGRADE, decode_open_downgrade_maxsz, hdr); 1524 encode_nfs4_stateid(xdr, &arg->stateid); 1525 encode_nfs4_seqid(xdr, arg->seqid); 1526 encode_share_access(xdr, arg->share_access); 1527} 1528 1529static void 1530encode_putfh(struct xdr_stream *xdr, const struct nfs_fh *fh, struct compound_hdr *hdr) 1531{ 1532 encode_op_hdr(xdr, OP_PUTFH, decode_putfh_maxsz, hdr); 1533 encode_string(xdr, fh->size, fh->data); 1534} 1535 1536static void encode_putrootfh(struct xdr_stream *xdr, struct compound_hdr *hdr) 1537{ 1538 encode_op_hdr(xdr, OP_PUTROOTFH, decode_putrootfh_maxsz, hdr); 1539} 1540 1541static void encode_read(struct xdr_stream *xdr, const struct nfs_pgio_args *args, 1542 struct compound_hdr *hdr) 1543{ 1544 __be32 *p; 1545 1546 encode_op_hdr(xdr, OP_READ, decode_read_maxsz, hdr); 1547 encode_nfs4_stateid(xdr, &args->stateid); 1548 1549 p = reserve_space(xdr, 12); 1550 p = xdr_encode_hyper(p, args->offset); 1551 *p = cpu_to_be32(args->count); 1552} 1553 1554static void encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg *readdir, struct rpc_rqst *req, struct compound_hdr *hdr) 1555{ 1556 uint32_t attrs[3] = { 1557 FATTR4_WORD0_RDATTR_ERROR, 1558 FATTR4_WORD1_MOUNTED_ON_FILEID, 1559 }; 1560 uint32_t dircount = readdir->count >> 1; 1561 __be32 *p, verf[2]; 1562 uint32_t attrlen = 0; 1563 unsigned int i; 1564 1565 if (readdir->plus) { 1566 attrs[0] |= FATTR4_WORD0_TYPE|FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE| 1567 FATTR4_WORD0_FSID|FATTR4_WORD0_FILEHANDLE|FATTR4_WORD0_FILEID; 1568 attrs[1] |= FATTR4_WORD1_MODE|FATTR4_WORD1_NUMLINKS|FATTR4_WORD1_OWNER| 1569 FATTR4_WORD1_OWNER_GROUP|FATTR4_WORD1_RAWDEV| 1570 FATTR4_WORD1_SPACE_USED|FATTR4_WORD1_TIME_ACCESS| 1571 FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY; 1572 attrs[2] |= FATTR4_WORD2_SECURITY_LABEL; 1573 dircount >>= 1; 1574 } 1575 /* Use mounted_on_fileid only if the server supports it */ 1576 if (!(readdir->bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)) 1577 attrs[0] |= FATTR4_WORD0_FILEID; 1578 for (i = 0; i < ARRAY_SIZE(attrs); i++) { 1579 attrs[i] &= readdir->bitmask[i]; 1580 if (attrs[i] != 0) 1581 attrlen = i+1; 1582 } 1583 1584 encode_op_hdr(xdr, OP_READDIR, decode_readdir_maxsz, hdr); 1585 encode_uint64(xdr, readdir->cookie); 1586 encode_nfs4_verifier(xdr, &readdir->verifier); 1587 p = reserve_space(xdr, 12 + (attrlen << 2)); 1588 *p++ = cpu_to_be32(dircount); 1589 *p++ = cpu_to_be32(readdir->count); 1590 *p++ = cpu_to_be32(attrlen); 1591 for (i = 0; i < attrlen; i++) 1592 *p++ = cpu_to_be32(attrs[i]); 1593 memcpy(verf, readdir->verifier.data, sizeof(verf)); 1594 1595 dprintk("%s: cookie = %llu, verifier = %08x:%08x, bitmap = %08x:%08x:%08x\n", 1596 __func__, 1597 (unsigned long long)readdir->cookie, 1598 verf[0], verf[1], 1599 attrs[0] & readdir->bitmask[0], 1600 attrs[1] & readdir->bitmask[1], 1601 attrs[2] & readdir->bitmask[2]); 1602} 1603 1604static void encode_readlink(struct xdr_stream *xdr, const struct nfs4_readlink *readlink, struct rpc_rqst *req, struct compound_hdr *hdr) 1605{ 1606 encode_op_hdr(xdr, OP_READLINK, decode_readlink_maxsz, hdr); 1607} 1608 1609static void encode_remove(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr) 1610{ 1611 encode_op_hdr(xdr, OP_REMOVE, decode_remove_maxsz, hdr); 1612 encode_string(xdr, name->len, name->name); 1613} 1614 1615static void encode_rename(struct xdr_stream *xdr, const struct qstr *oldname, const struct qstr *newname, struct compound_hdr *hdr) 1616{ 1617 encode_op_hdr(xdr, OP_RENAME, decode_rename_maxsz, hdr); 1618 encode_string(xdr, oldname->len, oldname->name); 1619 encode_string(xdr, newname->len, newname->name); 1620} 1621 1622static void encode_renew(struct xdr_stream *xdr, clientid4 clid, 1623 struct compound_hdr *hdr) 1624{ 1625 encode_op_hdr(xdr, OP_RENEW, decode_renew_maxsz, hdr); 1626 encode_uint64(xdr, clid); 1627} 1628 1629static void 1630encode_restorefh(struct xdr_stream *xdr, struct compound_hdr *hdr) 1631{ 1632 encode_op_hdr(xdr, OP_RESTOREFH, decode_restorefh_maxsz, hdr); 1633} 1634 1635static void 1636encode_setacl(struct xdr_stream *xdr, struct nfs_setaclargs *arg, struct compound_hdr *hdr) 1637{ 1638 __be32 *p; 1639 1640 encode_op_hdr(xdr, OP_SETATTR, decode_setacl_maxsz, hdr); 1641 encode_nfs4_stateid(xdr, &zero_stateid); 1642 p = reserve_space(xdr, 2*4); 1643 *p++ = cpu_to_be32(1); 1644 *p = cpu_to_be32(FATTR4_WORD0_ACL); 1645 p = reserve_space(xdr, 4); 1646 *p = cpu_to_be32(arg->acl_len); 1647 xdr_write_pages(xdr, arg->acl_pages, arg->acl_pgbase, arg->acl_len); 1648} 1649 1650static void 1651encode_savefh(struct xdr_stream *xdr, struct compound_hdr *hdr) 1652{ 1653 encode_op_hdr(xdr, OP_SAVEFH, decode_savefh_maxsz, hdr); 1654} 1655 1656static void encode_setattr(struct xdr_stream *xdr, const struct nfs_setattrargs *arg, const struct nfs_server *server, struct compound_hdr *hdr) 1657{ 1658 encode_op_hdr(xdr, OP_SETATTR, decode_setattr_maxsz, hdr); 1659 encode_nfs4_stateid(xdr, &arg->stateid); 1660 encode_attrs(xdr, arg->iap, arg->label, server); 1661} 1662 1663static void encode_setclientid(struct xdr_stream *xdr, const struct nfs4_setclientid *setclientid, struct compound_hdr *hdr) 1664{ 1665 __be32 *p; 1666 1667 encode_op_hdr(xdr, OP_SETCLIENTID, decode_setclientid_maxsz, hdr); 1668 encode_nfs4_verifier(xdr, setclientid->sc_verifier); 1669 1670 encode_string(xdr, setclientid->sc_name_len, setclientid->sc_name); 1671 p = reserve_space(xdr, 4); 1672 *p = cpu_to_be32(setclientid->sc_prog); 1673 encode_string(xdr, setclientid->sc_netid_len, setclientid->sc_netid); 1674 encode_string(xdr, setclientid->sc_uaddr_len, setclientid->sc_uaddr); 1675 p = reserve_space(xdr, 4); 1676 *p = cpu_to_be32(setclientid->sc_cb_ident); 1677} 1678 1679static void encode_setclientid_confirm(struct xdr_stream *xdr, const struct nfs4_setclientid_res *arg, struct compound_hdr *hdr) 1680{ 1681 encode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM, 1682 decode_setclientid_confirm_maxsz, hdr); 1683 encode_uint64(xdr, arg->clientid); 1684 encode_nfs4_verifier(xdr, &arg->confirm); 1685} 1686 1687static void encode_write(struct xdr_stream *xdr, const struct nfs_pgio_args *args, 1688 struct compound_hdr *hdr) 1689{ 1690 __be32 *p; 1691 1692 encode_op_hdr(xdr, OP_WRITE, decode_write_maxsz, hdr); 1693 encode_nfs4_stateid(xdr, &args->stateid); 1694 1695 p = reserve_space(xdr, 16); 1696 p = xdr_encode_hyper(p, args->offset); 1697 *p++ = cpu_to_be32(args->stable); 1698 *p = cpu_to_be32(args->count); 1699 1700 xdr_write_pages(xdr, args->pages, args->pgbase, args->count); 1701} 1702 1703static void encode_delegreturn(struct xdr_stream *xdr, const nfs4_stateid *stateid, struct compound_hdr *hdr) 1704{ 1705 encode_op_hdr(xdr, OP_DELEGRETURN, decode_delegreturn_maxsz, hdr); 1706 encode_nfs4_stateid(xdr, stateid); 1707} 1708 1709static void encode_secinfo(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr) 1710{ 1711 encode_op_hdr(xdr, OP_SECINFO, decode_secinfo_maxsz, hdr); 1712 encode_string(xdr, name->len, name->name); 1713} 1714 1715#if defined(CONFIG_NFS_V4_1) 1716/* NFSv4.1 operations */ 1717static void encode_bind_conn_to_session(struct xdr_stream *xdr, 1718 struct nfs41_bind_conn_to_session_args *args, 1719 struct compound_hdr *hdr) 1720{ 1721 __be32 *p; 1722 1723 encode_op_hdr(xdr, OP_BIND_CONN_TO_SESSION, 1724 decode_bind_conn_to_session_maxsz, hdr); 1725 encode_opaque_fixed(xdr, args->sessionid.data, NFS4_MAX_SESSIONID_LEN); 1726 p = xdr_reserve_space(xdr, 8); 1727 *p++ = cpu_to_be32(args->dir); 1728 *p = (args->use_conn_in_rdma_mode) ? cpu_to_be32(1) : cpu_to_be32(0); 1729} 1730 1731static void encode_op_map(struct xdr_stream *xdr, struct nfs4_op_map *op_map) 1732{ 1733 unsigned int i; 1734 encode_uint32(xdr, NFS4_OP_MAP_NUM_WORDS); 1735 for (i = 0; i < NFS4_OP_MAP_NUM_WORDS; i++) 1736 encode_uint32(xdr, op_map->u.words[i]); 1737} 1738 1739static void encode_exchange_id(struct xdr_stream *xdr, 1740 struct nfs41_exchange_id_args *args, 1741 struct compound_hdr *hdr) 1742{ 1743 __be32 *p; 1744 char impl_name[IMPL_NAME_LIMIT]; 1745 int len = 0; 1746 1747 encode_op_hdr(xdr, OP_EXCHANGE_ID, decode_exchange_id_maxsz, hdr); 1748 encode_nfs4_verifier(xdr, args->verifier); 1749 1750 encode_string(xdr, args->id_len, args->id); 1751 1752 encode_uint32(xdr, args->flags); 1753 encode_uint32(xdr, args->state_protect.how); 1754 1755 switch (args->state_protect.how) { 1756 case SP4_NONE: 1757 break; 1758 case SP4_MACH_CRED: 1759 encode_op_map(xdr, &args->state_protect.enforce); 1760 encode_op_map(xdr, &args->state_protect.allow); 1761 break; 1762 default: 1763 WARN_ON_ONCE(1); 1764 break; 1765 } 1766 1767 if (send_implementation_id && 1768 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN) > 1 && 1769 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN) 1770 <= sizeof(impl_name) + 1) 1771 len = snprintf(impl_name, sizeof(impl_name), "%s %s %s %s", 1772 utsname()->sysname, utsname()->release, 1773 utsname()->version, utsname()->machine); 1774 1775 if (len > 0) { 1776 encode_uint32(xdr, 1); /* implementation id array length=1 */ 1777 1778 encode_string(xdr, 1779 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN) - 1, 1780 CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN); 1781 encode_string(xdr, len, impl_name); 1782 /* just send zeros for nii_date - the date is in nii_name */ 1783 p = reserve_space(xdr, 12); 1784 p = xdr_encode_hyper(p, 0); 1785 *p = cpu_to_be32(0); 1786 } else 1787 encode_uint32(xdr, 0); /* implementation id array length=0 */ 1788} 1789 1790static void encode_create_session(struct xdr_stream *xdr, 1791 struct nfs41_create_session_args *args, 1792 struct compound_hdr *hdr) 1793{ 1794 __be32 *p; 1795 struct nfs_client *clp = args->client; 1796 struct rpc_clnt *clnt = clp->cl_rpcclient; 1797 struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id); 1798 u32 max_resp_sz_cached; 1799 1800 /* 1801 * Assumes OPEN is the biggest non-idempotent compound. 1802 * 2 is the verifier. 1803 */ 1804 max_resp_sz_cached = (NFS4_dec_open_sz + RPC_REPHDRSIZE + 1805 RPC_MAX_AUTH_SIZE + 2) * XDR_UNIT; 1806 1807 encode_op_hdr(xdr, OP_CREATE_SESSION, decode_create_session_maxsz, hdr); 1808 p = reserve_space(xdr, 16 + 2*28 + 20 + clnt->cl_nodelen + 12); 1809 p = xdr_encode_hyper(p, args->clientid); 1810 *p++ = cpu_to_be32(args->seqid); /*Sequence id */ 1811 *p++ = cpu_to_be32(args->flags); /*flags */ 1812 1813 /* Fore Channel */ 1814 *p++ = cpu_to_be32(0); /* header padding size */ 1815 *p++ = cpu_to_be32(args->fc_attrs.max_rqst_sz); /* max req size */ 1816 *p++ = cpu_to_be32(args->fc_attrs.max_resp_sz); /* max resp size */ 1817 *p++ = cpu_to_be32(max_resp_sz_cached); /* Max resp sz cached */ 1818 *p++ = cpu_to_be32(args->fc_attrs.max_ops); /* max operations */ 1819 *p++ = cpu_to_be32(args->fc_attrs.max_reqs); /* max requests */ 1820 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */ 1821 1822 /* Back Channel */ 1823 *p++ = cpu_to_be32(0); /* header padding size */ 1824 *p++ = cpu_to_be32(args->bc_attrs.max_rqst_sz); /* max req size */ 1825 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz); /* max resp size */ 1826 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz_cached); /* Max resp sz cached */ 1827 *p++ = cpu_to_be32(args->bc_attrs.max_ops); /* max operations */ 1828 *p++ = cpu_to_be32(args->bc_attrs.max_reqs); /* max requests */ 1829 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */ 1830 1831 *p++ = cpu_to_be32(args->cb_program); /* cb_program */ 1832 *p++ = cpu_to_be32(1); 1833 *p++ = cpu_to_be32(RPC_AUTH_UNIX); /* auth_sys */ 1834 1835 /* authsys_parms rfc1831 */ 1836 *p++ = cpu_to_be32(nn->boot_time.tv_nsec); /* stamp */ 1837 p = xdr_encode_array(p, clnt->cl_nodename, clnt->cl_nodelen); 1838 *p++ = cpu_to_be32(0); /* UID */ 1839 *p++ = cpu_to_be32(0); /* GID */ 1840 *p = cpu_to_be32(0); /* No more gids */ 1841} 1842 1843static void encode_destroy_session(struct xdr_stream *xdr, 1844 struct nfs4_session *session, 1845 struct compound_hdr *hdr) 1846{ 1847 encode_op_hdr(xdr, OP_DESTROY_SESSION, decode_destroy_session_maxsz, hdr); 1848 encode_opaque_fixed(xdr, session->sess_id.data, NFS4_MAX_SESSIONID_LEN); 1849} 1850 1851static void encode_destroy_clientid(struct xdr_stream *xdr, 1852 uint64_t clientid, 1853 struct compound_hdr *hdr) 1854{ 1855 encode_op_hdr(xdr, OP_DESTROY_CLIENTID, decode_destroy_clientid_maxsz, hdr); 1856 encode_uint64(xdr, clientid); 1857} 1858 1859static void encode_reclaim_complete(struct xdr_stream *xdr, 1860 struct nfs41_reclaim_complete_args *args, 1861 struct compound_hdr *hdr) 1862{ 1863 encode_op_hdr(xdr, OP_RECLAIM_COMPLETE, decode_reclaim_complete_maxsz, hdr); 1864 encode_uint32(xdr, args->one_fs); 1865} 1866#endif /* CONFIG_NFS_V4_1 */ 1867 1868static void encode_sequence(struct xdr_stream *xdr, 1869 const struct nfs4_sequence_args *args, 1870 struct compound_hdr *hdr) 1871{ 1872#if defined(CONFIG_NFS_V4_1) 1873 struct nfs4_session *session; 1874 struct nfs4_slot_table *tp; 1875 struct nfs4_slot *slot = args->sa_slot; 1876 __be32 *p; 1877 1878 tp = slot->table; 1879 session = tp->session; 1880 if (!session) 1881 return; 1882 1883 encode_op_hdr(xdr, OP_SEQUENCE, decode_sequence_maxsz, hdr); 1884 1885 /* 1886 * Sessionid + seqid + slotid + max slotid + cache_this 1887 */ 1888 dprintk("%s: sessionid=%u:%u:%u:%u seqid=%d slotid=%d " 1889 "max_slotid=%d cache_this=%d\n", 1890 __func__, 1891 ((u32 *)session->sess_id.data)[0], 1892 ((u32 *)session->sess_id.data)[1], 1893 ((u32 *)session->sess_id.data)[2], 1894 ((u32 *)session->sess_id.data)[3], 1895 slot->seq_nr, slot->slot_nr, 1896 tp->highest_used_slotid, args->sa_cache_this); 1897 p = reserve_space(xdr, NFS4_MAX_SESSIONID_LEN + 16); 1898 p = xdr_encode_opaque_fixed(p, session->sess_id.data, NFS4_MAX_SESSIONID_LEN); 1899 *p++ = cpu_to_be32(slot->seq_nr); 1900 *p++ = cpu_to_be32(slot->slot_nr); 1901 *p++ = cpu_to_be32(tp->highest_used_slotid); 1902 *p = cpu_to_be32(args->sa_cache_this); 1903#endif /* CONFIG_NFS_V4_1 */ 1904} 1905 1906#ifdef CONFIG_NFS_V4_1 1907static void 1908encode_getdeviceinfo(struct xdr_stream *xdr, 1909 const struct nfs4_getdeviceinfo_args *args, 1910 struct compound_hdr *hdr) 1911{ 1912 __be32 *p; 1913 1914 encode_op_hdr(xdr, OP_GETDEVICEINFO, decode_getdeviceinfo_maxsz, hdr); 1915 p = reserve_space(xdr, NFS4_DEVICEID4_SIZE + 4 + 4); 1916 p = xdr_encode_opaque_fixed(p, args->pdev->dev_id.data, 1917 NFS4_DEVICEID4_SIZE); 1918 *p++ = cpu_to_be32(args->pdev->layout_type); 1919 *p++ = cpu_to_be32(args->pdev->maxcount); /* gdia_maxcount */ 1920 1921 p = reserve_space(xdr, 4 + 4); 1922 *p++ = cpu_to_be32(1); /* bitmap length */ 1923 *p++ = cpu_to_be32(args->notify_types); 1924} 1925 1926static void 1927encode_layoutget(struct xdr_stream *xdr, 1928 const struct nfs4_layoutget_args *args, 1929 struct compound_hdr *hdr) 1930{ 1931 __be32 *p; 1932 1933 encode_op_hdr(xdr, OP_LAYOUTGET, decode_layoutget_maxsz, hdr); 1934 p = reserve_space(xdr, 36); 1935 *p++ = cpu_to_be32(0); /* Signal layout available */ 1936 *p++ = cpu_to_be32(args->type); 1937 *p++ = cpu_to_be32(args->range.iomode); 1938 p = xdr_encode_hyper(p, args->range.offset); 1939 p = xdr_encode_hyper(p, args->range.length); 1940 p = xdr_encode_hyper(p, args->minlength); 1941 encode_nfs4_stateid(xdr, &args->stateid); 1942 encode_uint32(xdr, args->maxcount); 1943 1944 dprintk("%s: 1st type:0x%x iomode:%d off:%lu len:%lu mc:%d\n", 1945 __func__, 1946 args->type, 1947 args->range.iomode, 1948 (unsigned long)args->range.offset, 1949 (unsigned long)args->range.length, 1950 args->maxcount); 1951} 1952 1953static int 1954encode_layoutcommit(struct xdr_stream *xdr, 1955 struct inode *inode, 1956 struct nfs4_layoutcommit_args *args, 1957 struct compound_hdr *hdr) 1958{ 1959 __be32 *p; 1960 1961 dprintk("%s: lbw: %llu type: %d\n", __func__, args->lastbytewritten, 1962 NFS_SERVER(args->inode)->pnfs_curr_ld->id); 1963 1964 encode_op_hdr(xdr, OP_LAYOUTCOMMIT, decode_layoutcommit_maxsz, hdr); 1965 p = reserve_space(xdr, 20); 1966 /* Only whole file layouts */ 1967 p = xdr_encode_hyper(p, 0); /* offset */ 1968 p = xdr_encode_hyper(p, args->lastbytewritten + 1); /* length */ 1969 *p = cpu_to_be32(0); /* reclaim */ 1970 encode_nfs4_stateid(xdr, &args->stateid); 1971 p = reserve_space(xdr, 20); 1972 *p++ = cpu_to_be32(1); /* newoffset = TRUE */ 1973 p = xdr_encode_hyper(p, args->lastbytewritten); 1974 *p++ = cpu_to_be32(0); /* Never send time_modify_changed */ 1975 *p++ = cpu_to_be32(NFS_SERVER(args->inode)->pnfs_curr_ld->id);/* type */ 1976 1977 if (NFS_SERVER(inode)->pnfs_curr_ld->encode_layoutcommit) { 1978 NFS_SERVER(inode)->pnfs_curr_ld->encode_layoutcommit( 1979 NFS_I(inode)->layout, xdr, args); 1980 } else { 1981 encode_uint32(xdr, args->layoutupdate_len); 1982 if (args->layoutupdate_pages) { 1983 xdr_write_pages(xdr, args->layoutupdate_pages, 0, 1984 args->layoutupdate_len); 1985 } 1986 } 1987 1988 return 0; 1989} 1990 1991static void 1992encode_layoutreturn(struct xdr_stream *xdr, 1993 const struct nfs4_layoutreturn_args *args, 1994 struct compound_hdr *hdr) 1995{ 1996 __be32 *p; 1997 1998 encode_op_hdr(xdr, OP_LAYOUTRETURN, decode_layoutreturn_maxsz, hdr); 1999 p = reserve_space(xdr, 16); 2000 *p++ = cpu_to_be32(0); /* reclaim. always 0 for now */ 2001 *p++ = cpu_to_be32(args->layout_type); 2002 *p++ = cpu_to_be32(args->range.iomode); 2003 *p = cpu_to_be32(RETURN_FILE); 2004 p = reserve_space(xdr, 16); 2005 p = xdr_encode_hyper(p, args->range.offset); 2006 p = xdr_encode_hyper(p, args->range.length); 2007 spin_lock(&args->inode->i_lock); 2008 encode_nfs4_stateid(xdr, &args->stateid); 2009 spin_unlock(&args->inode->i_lock); 2010 if (NFS_SERVER(args->inode)->pnfs_curr_ld->encode_layoutreturn) { 2011 NFS_SERVER(args->inode)->pnfs_curr_ld->encode_layoutreturn( 2012 NFS_I(args->inode)->layout, xdr, args); 2013 } else 2014 encode_uint32(xdr, 0); 2015} 2016 2017static int 2018encode_secinfo_no_name(struct xdr_stream *xdr, 2019 const struct nfs41_secinfo_no_name_args *args, 2020 struct compound_hdr *hdr) 2021{ 2022 encode_op_hdr(xdr, OP_SECINFO_NO_NAME, decode_secinfo_no_name_maxsz, hdr); 2023 encode_uint32(xdr, args->style); 2024 return 0; 2025} 2026 2027static void encode_test_stateid(struct xdr_stream *xdr, 2028 struct nfs41_test_stateid_args *args, 2029 struct compound_hdr *hdr) 2030{ 2031 encode_op_hdr(xdr, OP_TEST_STATEID, decode_test_stateid_maxsz, hdr); 2032 encode_uint32(xdr, 1); 2033 encode_nfs4_stateid(xdr, args->stateid); 2034} 2035 2036static void encode_free_stateid(struct xdr_stream *xdr, 2037 struct nfs41_free_stateid_args *args, 2038 struct compound_hdr *hdr) 2039{ 2040 encode_op_hdr(xdr, OP_FREE_STATEID, decode_free_stateid_maxsz, hdr); 2041 encode_nfs4_stateid(xdr, &args->stateid); 2042} 2043#endif /* CONFIG_NFS_V4_1 */ 2044 2045/* 2046 * END OF "GENERIC" ENCODE ROUTINES. 2047 */ 2048 2049static u32 nfs4_xdr_minorversion(const struct nfs4_sequence_args *args) 2050{ 2051#if defined(CONFIG_NFS_V4_1) 2052 struct nfs4_session *session = args->sa_slot->table->session; 2053 if (session) 2054 return session->clp->cl_mvops->minor_version; 2055#endif /* CONFIG_NFS_V4_1 */ 2056 return 0; 2057} 2058 2059/* 2060 * Encode an ACCESS request 2061 */ 2062static void nfs4_xdr_enc_access(struct rpc_rqst *req, struct xdr_stream *xdr, 2063 const struct nfs4_accessargs *args) 2064{ 2065 struct compound_hdr hdr = { 2066 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2067 }; 2068 2069 encode_compound_hdr(xdr, req, &hdr); 2070 encode_sequence(xdr, &args->seq_args, &hdr); 2071 encode_putfh(xdr, args->fh, &hdr); 2072 encode_access(xdr, args->access, &hdr); 2073 encode_getfattr(xdr, args->bitmask, &hdr); 2074 encode_nops(&hdr); 2075} 2076 2077/* 2078 * Encode LOOKUP request 2079 */ 2080static void nfs4_xdr_enc_lookup(struct rpc_rqst *req, struct xdr_stream *xdr, 2081 const struct nfs4_lookup_arg *args) 2082{ 2083 struct compound_hdr hdr = { 2084 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2085 }; 2086 2087 encode_compound_hdr(xdr, req, &hdr); 2088 encode_sequence(xdr, &args->seq_args, &hdr); 2089 encode_putfh(xdr, args->dir_fh, &hdr); 2090 encode_lookup(xdr, args->name, &hdr); 2091 encode_getfh(xdr, &hdr); 2092 encode_getfattr(xdr, args->bitmask, &hdr); 2093 encode_nops(&hdr); 2094} 2095 2096/* 2097 * Encode LOOKUP_ROOT request 2098 */ 2099static void nfs4_xdr_enc_lookup_root(struct rpc_rqst *req, 2100 struct xdr_stream *xdr, 2101 const struct nfs4_lookup_root_arg *args) 2102{ 2103 struct compound_hdr hdr = { 2104 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2105 }; 2106 2107 encode_compound_hdr(xdr, req, &hdr); 2108 encode_sequence(xdr, &args->seq_args, &hdr); 2109 encode_putrootfh(xdr, &hdr); 2110 encode_getfh(xdr, &hdr); 2111 encode_getfattr(xdr, args->bitmask, &hdr); 2112 encode_nops(&hdr); 2113} 2114 2115/* 2116 * Encode REMOVE request 2117 */ 2118static void nfs4_xdr_enc_remove(struct rpc_rqst *req, struct xdr_stream *xdr, 2119 const struct nfs_removeargs *args) 2120{ 2121 struct compound_hdr hdr = { 2122 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2123 }; 2124 2125 encode_compound_hdr(xdr, req, &hdr); 2126 encode_sequence(xdr, &args->seq_args, &hdr); 2127 encode_putfh(xdr, args->fh, &hdr); 2128 encode_remove(xdr, &args->name, &hdr); 2129 encode_nops(&hdr); 2130} 2131 2132/* 2133 * Encode RENAME request 2134 */ 2135static void nfs4_xdr_enc_rename(struct rpc_rqst *req, struct xdr_stream *xdr, 2136 const struct nfs_renameargs *args) 2137{ 2138 struct compound_hdr hdr = { 2139 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2140 }; 2141 2142 encode_compound_hdr(xdr, req, &hdr); 2143 encode_sequence(xdr, &args->seq_args, &hdr); 2144 encode_putfh(xdr, args->old_dir, &hdr); 2145 encode_savefh(xdr, &hdr); 2146 encode_putfh(xdr, args->new_dir, &hdr); 2147 encode_rename(xdr, args->old_name, args->new_name, &hdr); 2148 encode_nops(&hdr); 2149} 2150 2151/* 2152 * Encode LINK request 2153 */ 2154static void nfs4_xdr_enc_link(struct rpc_rqst *req, struct xdr_stream *xdr, 2155 const struct nfs4_link_arg *args) 2156{ 2157 struct compound_hdr hdr = { 2158 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2159 }; 2160 2161 encode_compound_hdr(xdr, req, &hdr); 2162 encode_sequence(xdr, &args->seq_args, &hdr); 2163 encode_putfh(xdr, args->fh, &hdr); 2164 encode_savefh(xdr, &hdr); 2165 encode_putfh(xdr, args->dir_fh, &hdr); 2166 encode_link(xdr, args->name, &hdr); 2167 encode_restorefh(xdr, &hdr); 2168 encode_getfattr(xdr, args->bitmask, &hdr); 2169 encode_nops(&hdr); 2170} 2171 2172/* 2173 * Encode CREATE request 2174 */ 2175static void nfs4_xdr_enc_create(struct rpc_rqst *req, struct xdr_stream *xdr, 2176 const struct nfs4_create_arg *args) 2177{ 2178 struct compound_hdr hdr = { 2179 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2180 }; 2181 2182 encode_compound_hdr(xdr, req, &hdr); 2183 encode_sequence(xdr, &args->seq_args, &hdr); 2184 encode_putfh(xdr, args->dir_fh, &hdr); 2185 encode_create(xdr, args, &hdr); 2186 encode_getfh(xdr, &hdr); 2187 encode_getfattr(xdr, args->bitmask, &hdr); 2188 encode_nops(&hdr); 2189} 2190 2191/* 2192 * Encode SYMLINK request 2193 */ 2194static void nfs4_xdr_enc_symlink(struct rpc_rqst *req, struct xdr_stream *xdr, 2195 const struct nfs4_create_arg *args) 2196{ 2197 nfs4_xdr_enc_create(req, xdr, args); 2198} 2199 2200/* 2201 * Encode GETATTR request 2202 */ 2203static void nfs4_xdr_enc_getattr(struct rpc_rqst *req, struct xdr_stream *xdr, 2204 const struct nfs4_getattr_arg *args) 2205{ 2206 struct compound_hdr hdr = { 2207 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2208 }; 2209 2210 encode_compound_hdr(xdr, req, &hdr); 2211 encode_sequence(xdr, &args->seq_args, &hdr); 2212 encode_putfh(xdr, args->fh, &hdr); 2213 encode_getfattr(xdr, args->bitmask, &hdr); 2214 encode_nops(&hdr); 2215} 2216 2217/* 2218 * Encode a CLOSE request 2219 */ 2220static void nfs4_xdr_enc_close(struct rpc_rqst *req, struct xdr_stream *xdr, 2221 struct nfs_closeargs *args) 2222{ 2223 struct compound_hdr hdr = { 2224 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2225 }; 2226 2227 encode_compound_hdr(xdr, req, &hdr); 2228 encode_sequence(xdr, &args->seq_args, &hdr); 2229 encode_putfh(xdr, args->fh, &hdr); 2230 encode_close(xdr, args, &hdr); 2231 encode_getfattr(xdr, args->bitmask, &hdr); 2232 encode_nops(&hdr); 2233} 2234 2235/* 2236 * Encode an OPEN request 2237 */ 2238static void nfs4_xdr_enc_open(struct rpc_rqst *req, struct xdr_stream *xdr, 2239 struct nfs_openargs *args) 2240{ 2241 struct compound_hdr hdr = { 2242 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2243 }; 2244 2245 encode_compound_hdr(xdr, req, &hdr); 2246 encode_sequence(xdr, &args->seq_args, &hdr); 2247 encode_putfh(xdr, args->fh, &hdr); 2248 encode_open(xdr, args, &hdr); 2249 encode_getfh(xdr, &hdr); 2250 if (args->access) 2251 encode_access(xdr, args->access, &hdr); 2252 encode_getfattr_open(xdr, args->bitmask, args->open_bitmap, &hdr); 2253 encode_nops(&hdr); 2254} 2255 2256/* 2257 * Encode an OPEN_CONFIRM request 2258 */ 2259static void nfs4_xdr_enc_open_confirm(struct rpc_rqst *req, 2260 struct xdr_stream *xdr, 2261 struct nfs_open_confirmargs *args) 2262{ 2263 struct compound_hdr hdr = { 2264 .nops = 0, 2265 }; 2266 2267 encode_compound_hdr(xdr, req, &hdr); 2268 encode_putfh(xdr, args->fh, &hdr); 2269 encode_open_confirm(xdr, args, &hdr); 2270 encode_nops(&hdr); 2271} 2272 2273/* 2274 * Encode an OPEN request with no attributes. 2275 */ 2276static void nfs4_xdr_enc_open_noattr(struct rpc_rqst *req, 2277 struct xdr_stream *xdr, 2278 struct nfs_openargs *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_open(xdr, args, &hdr); 2288 if (args->access) 2289 encode_access(xdr, args->access, &hdr); 2290 encode_getfattr_open(xdr, args->bitmask, args->open_bitmap, &hdr); 2291 encode_nops(&hdr); 2292} 2293 2294/* 2295 * Encode an OPEN_DOWNGRADE request 2296 */ 2297static void nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req, 2298 struct xdr_stream *xdr, 2299 struct nfs_closeargs *args) 2300{ 2301 struct compound_hdr hdr = { 2302 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2303 }; 2304 2305 encode_compound_hdr(xdr, req, &hdr); 2306 encode_sequence(xdr, &args->seq_args, &hdr); 2307 encode_putfh(xdr, args->fh, &hdr); 2308 encode_open_downgrade(xdr, args, &hdr); 2309 encode_getfattr(xdr, args->bitmask, &hdr); 2310 encode_nops(&hdr); 2311} 2312 2313/* 2314 * Encode a LOCK request 2315 */ 2316static void nfs4_xdr_enc_lock(struct rpc_rqst *req, struct xdr_stream *xdr, 2317 struct nfs_lock_args *args) 2318{ 2319 struct compound_hdr hdr = { 2320 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2321 }; 2322 2323 encode_compound_hdr(xdr, req, &hdr); 2324 encode_sequence(xdr, &args->seq_args, &hdr); 2325 encode_putfh(xdr, args->fh, &hdr); 2326 encode_lock(xdr, args, &hdr); 2327 encode_nops(&hdr); 2328} 2329 2330/* 2331 * Encode a LOCKT request 2332 */ 2333static void nfs4_xdr_enc_lockt(struct rpc_rqst *req, struct xdr_stream *xdr, 2334 struct nfs_lockt_args *args) 2335{ 2336 struct compound_hdr hdr = { 2337 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2338 }; 2339 2340 encode_compound_hdr(xdr, req, &hdr); 2341 encode_sequence(xdr, &args->seq_args, &hdr); 2342 encode_putfh(xdr, args->fh, &hdr); 2343 encode_lockt(xdr, args, &hdr); 2344 encode_nops(&hdr); 2345} 2346 2347/* 2348 * Encode a LOCKU request 2349 */ 2350static void nfs4_xdr_enc_locku(struct rpc_rqst *req, struct xdr_stream *xdr, 2351 struct nfs_locku_args *args) 2352{ 2353 struct compound_hdr hdr = { 2354 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2355 }; 2356 2357 encode_compound_hdr(xdr, req, &hdr); 2358 encode_sequence(xdr, &args->seq_args, &hdr); 2359 encode_putfh(xdr, args->fh, &hdr); 2360 encode_locku(xdr, args, &hdr); 2361 encode_nops(&hdr); 2362} 2363 2364static void nfs4_xdr_enc_release_lockowner(struct rpc_rqst *req, 2365 struct xdr_stream *xdr, 2366 struct nfs_release_lockowner_args *args) 2367{ 2368 struct compound_hdr hdr = { 2369 .minorversion = 0, 2370 }; 2371 2372 encode_compound_hdr(xdr, req, &hdr); 2373 encode_release_lockowner(xdr, &args->lock_owner, &hdr); 2374 encode_nops(&hdr); 2375} 2376 2377/* 2378 * Encode a READLINK request 2379 */ 2380static void nfs4_xdr_enc_readlink(struct rpc_rqst *req, struct xdr_stream *xdr, 2381 const struct nfs4_readlink *args) 2382{ 2383 struct compound_hdr hdr = { 2384 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2385 }; 2386 2387 encode_compound_hdr(xdr, req, &hdr); 2388 encode_sequence(xdr, &args->seq_args, &hdr); 2389 encode_putfh(xdr, args->fh, &hdr); 2390 encode_readlink(xdr, args, req, &hdr); 2391 2392 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages, 2393 args->pgbase, args->pglen); 2394 encode_nops(&hdr); 2395} 2396 2397/* 2398 * Encode a READDIR request 2399 */ 2400static void nfs4_xdr_enc_readdir(struct rpc_rqst *req, struct xdr_stream *xdr, 2401 const struct nfs4_readdir_arg *args) 2402{ 2403 struct compound_hdr hdr = { 2404 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2405 }; 2406 2407 encode_compound_hdr(xdr, req, &hdr); 2408 encode_sequence(xdr, &args->seq_args, &hdr); 2409 encode_putfh(xdr, args->fh, &hdr); 2410 encode_readdir(xdr, args, req, &hdr); 2411 2412 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages, 2413 args->pgbase, args->count); 2414 dprintk("%s: inlined page args = (%u, %p, %u, %u)\n", 2415 __func__, hdr.replen << 2, args->pages, 2416 args->pgbase, args->count); 2417 encode_nops(&hdr); 2418} 2419 2420/* 2421 * Encode a READ request 2422 */ 2423static void nfs4_xdr_enc_read(struct rpc_rqst *req, struct xdr_stream *xdr, 2424 struct nfs_pgio_args *args) 2425{ 2426 struct compound_hdr hdr = { 2427 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2428 }; 2429 2430 encode_compound_hdr(xdr, req, &hdr); 2431 encode_sequence(xdr, &args->seq_args, &hdr); 2432 encode_putfh(xdr, args->fh, &hdr); 2433 encode_read(xdr, args, &hdr); 2434 2435 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, 2436 args->pages, args->pgbase, args->count); 2437 req->rq_rcv_buf.flags |= XDRBUF_READ; 2438 encode_nops(&hdr); 2439} 2440 2441/* 2442 * Encode an SETATTR request 2443 */ 2444static void nfs4_xdr_enc_setattr(struct rpc_rqst *req, struct xdr_stream *xdr, 2445 struct nfs_setattrargs *args) 2446{ 2447 struct compound_hdr hdr = { 2448 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2449 }; 2450 2451 encode_compound_hdr(xdr, req, &hdr); 2452 encode_sequence(xdr, &args->seq_args, &hdr); 2453 encode_putfh(xdr, args->fh, &hdr); 2454 encode_setattr(xdr, args, args->server, &hdr); 2455 encode_getfattr(xdr, args->bitmask, &hdr); 2456 encode_nops(&hdr); 2457} 2458 2459/* 2460 * Encode a GETACL request 2461 */ 2462static void nfs4_xdr_enc_getacl(struct rpc_rqst *req, struct xdr_stream *xdr, 2463 struct nfs_getaclargs *args) 2464{ 2465 struct compound_hdr hdr = { 2466 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2467 }; 2468 uint32_t replen; 2469 2470 encode_compound_hdr(xdr, req, &hdr); 2471 encode_sequence(xdr, &args->seq_args, &hdr); 2472 encode_putfh(xdr, args->fh, &hdr); 2473 replen = hdr.replen + op_decode_hdr_maxsz + 1; 2474 encode_getattr_two(xdr, FATTR4_WORD0_ACL, 0, &hdr); 2475 2476 xdr_inline_pages(&req->rq_rcv_buf, replen << 2, 2477 args->acl_pages, args->acl_pgbase, args->acl_len); 2478 2479 encode_nops(&hdr); 2480} 2481 2482/* 2483 * Encode a WRITE request 2484 */ 2485static void nfs4_xdr_enc_write(struct rpc_rqst *req, struct xdr_stream *xdr, 2486 struct nfs_pgio_args *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_write(xdr, args, &hdr); 2496 req->rq_snd_buf.flags |= XDRBUF_WRITE; 2497 if (args->bitmask) 2498 encode_getfattr(xdr, args->bitmask, &hdr); 2499 encode_nops(&hdr); 2500} 2501 2502/* 2503 * a COMMIT request 2504 */ 2505static void nfs4_xdr_enc_commit(struct rpc_rqst *req, struct xdr_stream *xdr, 2506 struct nfs_commitargs *args) 2507{ 2508 struct compound_hdr hdr = { 2509 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2510 }; 2511 2512 encode_compound_hdr(xdr, req, &hdr); 2513 encode_sequence(xdr, &args->seq_args, &hdr); 2514 encode_putfh(xdr, args->fh, &hdr); 2515 encode_commit(xdr, args, &hdr); 2516 encode_nops(&hdr); 2517} 2518 2519/* 2520 * FSINFO request 2521 */ 2522static void nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr, 2523 struct nfs4_fsinfo_arg *args) 2524{ 2525 struct compound_hdr hdr = { 2526 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2527 }; 2528 2529 encode_compound_hdr(xdr, req, &hdr); 2530 encode_sequence(xdr, &args->seq_args, &hdr); 2531 encode_putfh(xdr, args->fh, &hdr); 2532 encode_fsinfo(xdr, args->bitmask, &hdr); 2533 encode_nops(&hdr); 2534} 2535 2536/* 2537 * a PATHCONF request 2538 */ 2539static void nfs4_xdr_enc_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr, 2540 const struct nfs4_pathconf_arg *args) 2541{ 2542 struct compound_hdr hdr = { 2543 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2544 }; 2545 2546 encode_compound_hdr(xdr, req, &hdr); 2547 encode_sequence(xdr, &args->seq_args, &hdr); 2548 encode_putfh(xdr, args->fh, &hdr); 2549 encode_getattr_one(xdr, args->bitmask[0] & nfs4_pathconf_bitmap[0], 2550 &hdr); 2551 encode_nops(&hdr); 2552} 2553 2554/* 2555 * a STATFS request 2556 */ 2557static void nfs4_xdr_enc_statfs(struct rpc_rqst *req, struct xdr_stream *xdr, 2558 const struct nfs4_statfs_arg *args) 2559{ 2560 struct compound_hdr hdr = { 2561 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2562 }; 2563 2564 encode_compound_hdr(xdr, req, &hdr); 2565 encode_sequence(xdr, &args->seq_args, &hdr); 2566 encode_putfh(xdr, args->fh, &hdr); 2567 encode_getattr_two(xdr, args->bitmask[0] & nfs4_statfs_bitmap[0], 2568 args->bitmask[1] & nfs4_statfs_bitmap[1], &hdr); 2569 encode_nops(&hdr); 2570} 2571 2572/* 2573 * GETATTR_BITMAP request 2574 */ 2575static void nfs4_xdr_enc_server_caps(struct rpc_rqst *req, 2576 struct xdr_stream *xdr, 2577 struct nfs4_server_caps_arg *args) 2578{ 2579 struct compound_hdr hdr = { 2580 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2581 }; 2582 2583 encode_compound_hdr(xdr, req, &hdr); 2584 encode_sequence(xdr, &args->seq_args, &hdr); 2585 encode_putfh(xdr, args->fhandle, &hdr); 2586 encode_getattr_one(xdr, FATTR4_WORD0_SUPPORTED_ATTRS| 2587 FATTR4_WORD0_FH_EXPIRE_TYPE| 2588 FATTR4_WORD0_LINK_SUPPORT| 2589 FATTR4_WORD0_SYMLINK_SUPPORT| 2590 FATTR4_WORD0_ACLSUPPORT, &hdr); 2591 encode_nops(&hdr); 2592} 2593 2594/* 2595 * a RENEW request 2596 */ 2597static void nfs4_xdr_enc_renew(struct rpc_rqst *req, struct xdr_stream *xdr, 2598 struct nfs_client *clp) 2599{ 2600 struct compound_hdr hdr = { 2601 .nops = 0, 2602 }; 2603 2604 encode_compound_hdr(xdr, req, &hdr); 2605 encode_renew(xdr, clp->cl_clientid, &hdr); 2606 encode_nops(&hdr); 2607} 2608 2609/* 2610 * a SETCLIENTID request 2611 */ 2612static void nfs4_xdr_enc_setclientid(struct rpc_rqst *req, 2613 struct xdr_stream *xdr, 2614 struct nfs4_setclientid *sc) 2615{ 2616 struct compound_hdr hdr = { 2617 .nops = 0, 2618 }; 2619 2620 encode_compound_hdr(xdr, req, &hdr); 2621 encode_setclientid(xdr, sc, &hdr); 2622 encode_nops(&hdr); 2623} 2624 2625/* 2626 * a SETCLIENTID_CONFIRM request 2627 */ 2628static void nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req, 2629 struct xdr_stream *xdr, 2630 struct nfs4_setclientid_res *arg) 2631{ 2632 struct compound_hdr hdr = { 2633 .nops = 0, 2634 }; 2635 2636 encode_compound_hdr(xdr, req, &hdr); 2637 encode_setclientid_confirm(xdr, arg, &hdr); 2638 encode_nops(&hdr); 2639} 2640 2641/* 2642 * DELEGRETURN request 2643 */ 2644static void nfs4_xdr_enc_delegreturn(struct rpc_rqst *req, 2645 struct xdr_stream *xdr, 2646 const struct nfs4_delegreturnargs *args) 2647{ 2648 struct compound_hdr hdr = { 2649 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2650 }; 2651 2652 encode_compound_hdr(xdr, req, &hdr); 2653 encode_sequence(xdr, &args->seq_args, &hdr); 2654 encode_putfh(xdr, args->fhandle, &hdr); 2655 encode_getfattr(xdr, args->bitmask, &hdr); 2656 encode_delegreturn(xdr, args->stateid, &hdr); 2657 encode_nops(&hdr); 2658} 2659 2660/* 2661 * Encode FS_LOCATIONS request 2662 */ 2663static void nfs4_xdr_enc_fs_locations(struct rpc_rqst *req, 2664 struct xdr_stream *xdr, 2665 struct nfs4_fs_locations_arg *args) 2666{ 2667 struct compound_hdr hdr = { 2668 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2669 }; 2670 uint32_t replen; 2671 2672 encode_compound_hdr(xdr, req, &hdr); 2673 encode_sequence(xdr, &args->seq_args, &hdr); 2674 if (args->migration) { 2675 encode_putfh(xdr, args->fh, &hdr); 2676 replen = hdr.replen; 2677 encode_fs_locations(xdr, args->bitmask, &hdr); 2678 if (args->renew) 2679 encode_renew(xdr, args->clientid, &hdr); 2680 } else { 2681 encode_putfh(xdr, args->dir_fh, &hdr); 2682 encode_lookup(xdr, args->name, &hdr); 2683 replen = hdr.replen; 2684 encode_fs_locations(xdr, args->bitmask, &hdr); 2685 } 2686 2687 /* Set up reply kvec to capture returned fs_locations array. */ 2688 xdr_inline_pages(&req->rq_rcv_buf, replen << 2, &args->page, 2689 0, PAGE_SIZE); 2690 encode_nops(&hdr); 2691} 2692 2693/* 2694 * Encode SECINFO request 2695 */ 2696static void nfs4_xdr_enc_secinfo(struct rpc_rqst *req, 2697 struct xdr_stream *xdr, 2698 struct nfs4_secinfo_arg *args) 2699{ 2700 struct compound_hdr hdr = { 2701 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2702 }; 2703 2704 encode_compound_hdr(xdr, req, &hdr); 2705 encode_sequence(xdr, &args->seq_args, &hdr); 2706 encode_putfh(xdr, args->dir_fh, &hdr); 2707 encode_secinfo(xdr, args->name, &hdr); 2708 encode_nops(&hdr); 2709} 2710 2711/* 2712 * Encode FSID_PRESENT request 2713 */ 2714static void nfs4_xdr_enc_fsid_present(struct rpc_rqst *req, 2715 struct xdr_stream *xdr, 2716 struct nfs4_fsid_present_arg *args) 2717{ 2718 struct compound_hdr hdr = { 2719 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2720 }; 2721 2722 encode_compound_hdr(xdr, req, &hdr); 2723 encode_sequence(xdr, &args->seq_args, &hdr); 2724 encode_putfh(xdr, args->fh, &hdr); 2725 encode_getfh(xdr, &hdr); 2726 if (args->renew) 2727 encode_renew(xdr, args->clientid, &hdr); 2728 encode_nops(&hdr); 2729} 2730 2731#if defined(CONFIG_NFS_V4_1) 2732/* 2733 * BIND_CONN_TO_SESSION request 2734 */ 2735static void nfs4_xdr_enc_bind_conn_to_session(struct rpc_rqst *req, 2736 struct xdr_stream *xdr, 2737 struct nfs41_bind_conn_to_session_args *args) 2738{ 2739 struct compound_hdr hdr = { 2740 .minorversion = args->client->cl_mvops->minor_version, 2741 }; 2742 2743 encode_compound_hdr(xdr, req, &hdr); 2744 encode_bind_conn_to_session(xdr, args, &hdr); 2745 encode_nops(&hdr); 2746} 2747 2748/* 2749 * EXCHANGE_ID request 2750 */ 2751static void nfs4_xdr_enc_exchange_id(struct rpc_rqst *req, 2752 struct xdr_stream *xdr, 2753 struct nfs41_exchange_id_args *args) 2754{ 2755 struct compound_hdr hdr = { 2756 .minorversion = args->client->cl_mvops->minor_version, 2757 }; 2758 2759 encode_compound_hdr(xdr, req, &hdr); 2760 encode_exchange_id(xdr, args, &hdr); 2761 encode_nops(&hdr); 2762} 2763 2764/* 2765 * a CREATE_SESSION request 2766 */ 2767static void nfs4_xdr_enc_create_session(struct rpc_rqst *req, 2768 struct xdr_stream *xdr, 2769 struct nfs41_create_session_args *args) 2770{ 2771 struct compound_hdr hdr = { 2772 .minorversion = args->client->cl_mvops->minor_version, 2773 }; 2774 2775 encode_compound_hdr(xdr, req, &hdr); 2776 encode_create_session(xdr, args, &hdr); 2777 encode_nops(&hdr); 2778} 2779 2780/* 2781 * a DESTROY_SESSION request 2782 */ 2783static void nfs4_xdr_enc_destroy_session(struct rpc_rqst *req, 2784 struct xdr_stream *xdr, 2785 struct nfs4_session *session) 2786{ 2787 struct compound_hdr hdr = { 2788 .minorversion = session->clp->cl_mvops->minor_version, 2789 }; 2790 2791 encode_compound_hdr(xdr, req, &hdr); 2792 encode_destroy_session(xdr, session, &hdr); 2793 encode_nops(&hdr); 2794} 2795 2796/* 2797 * a DESTROY_CLIENTID request 2798 */ 2799static void nfs4_xdr_enc_destroy_clientid(struct rpc_rqst *req, 2800 struct xdr_stream *xdr, 2801 struct nfs_client *clp) 2802{ 2803 struct compound_hdr hdr = { 2804 .minorversion = clp->cl_mvops->minor_version, 2805 }; 2806 2807 encode_compound_hdr(xdr, req, &hdr); 2808 encode_destroy_clientid(xdr, clp->cl_clientid, &hdr); 2809 encode_nops(&hdr); 2810} 2811 2812/* 2813 * a SEQUENCE request 2814 */ 2815static void nfs4_xdr_enc_sequence(struct rpc_rqst *req, struct xdr_stream *xdr, 2816 struct nfs4_sequence_args *args) 2817{ 2818 struct compound_hdr hdr = { 2819 .minorversion = nfs4_xdr_minorversion(args), 2820 }; 2821 2822 encode_compound_hdr(xdr, req, &hdr); 2823 encode_sequence(xdr, args, &hdr); 2824 encode_nops(&hdr); 2825} 2826 2827/* 2828 * a GET_LEASE_TIME request 2829 */ 2830static void nfs4_xdr_enc_get_lease_time(struct rpc_rqst *req, 2831 struct xdr_stream *xdr, 2832 struct nfs4_get_lease_time_args *args) 2833{ 2834 struct compound_hdr hdr = { 2835 .minorversion = nfs4_xdr_minorversion(&args->la_seq_args), 2836 }; 2837 const u32 lease_bitmap[3] = { FATTR4_WORD0_LEASE_TIME }; 2838 2839 encode_compound_hdr(xdr, req, &hdr); 2840 encode_sequence(xdr, &args->la_seq_args, &hdr); 2841 encode_putrootfh(xdr, &hdr); 2842 encode_fsinfo(xdr, lease_bitmap, &hdr); 2843 encode_nops(&hdr); 2844} 2845 2846/* 2847 * a RECLAIM_COMPLETE request 2848 */ 2849static void nfs4_xdr_enc_reclaim_complete(struct rpc_rqst *req, 2850 struct xdr_stream *xdr, 2851 struct nfs41_reclaim_complete_args *args) 2852{ 2853 struct compound_hdr hdr = { 2854 .minorversion = nfs4_xdr_minorversion(&args->seq_args) 2855 }; 2856 2857 encode_compound_hdr(xdr, req, &hdr); 2858 encode_sequence(xdr, &args->seq_args, &hdr); 2859 encode_reclaim_complete(xdr, args, &hdr); 2860 encode_nops(&hdr); 2861} 2862 2863/* 2864 * Encode GETDEVICEINFO request 2865 */ 2866static void nfs4_xdr_enc_getdeviceinfo(struct rpc_rqst *req, 2867 struct xdr_stream *xdr, 2868 struct nfs4_getdeviceinfo_args *args) 2869{ 2870 struct compound_hdr hdr = { 2871 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2872 }; 2873 2874 encode_compound_hdr(xdr, req, &hdr); 2875 encode_sequence(xdr, &args->seq_args, &hdr); 2876 encode_getdeviceinfo(xdr, args, &hdr); 2877 2878 /* set up reply kvec. Subtract notification bitmap max size (2) 2879 * so that notification bitmap is put in xdr_buf tail */ 2880 xdr_inline_pages(&req->rq_rcv_buf, (hdr.replen - 2) << 2, 2881 args->pdev->pages, args->pdev->pgbase, 2882 args->pdev->pglen); 2883 2884 encode_nops(&hdr); 2885} 2886 2887/* 2888 * Encode LAYOUTGET request 2889 */ 2890static void nfs4_xdr_enc_layoutget(struct rpc_rqst *req, 2891 struct xdr_stream *xdr, 2892 struct nfs4_layoutget_args *args) 2893{ 2894 struct compound_hdr hdr = { 2895 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2896 }; 2897 2898 encode_compound_hdr(xdr, req, &hdr); 2899 encode_sequence(xdr, &args->seq_args, &hdr); 2900 encode_putfh(xdr, NFS_FH(args->inode), &hdr); 2901 encode_layoutget(xdr, args, &hdr); 2902 2903 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, 2904 args->layout.pages, 0, args->layout.pglen); 2905 2906 encode_nops(&hdr); 2907} 2908 2909/* 2910 * Encode LAYOUTCOMMIT request 2911 */ 2912static void nfs4_xdr_enc_layoutcommit(struct rpc_rqst *req, 2913 struct xdr_stream *xdr, 2914 struct nfs4_layoutcommit_args *args) 2915{ 2916 struct nfs4_layoutcommit_data *data = 2917 container_of(args, struct nfs4_layoutcommit_data, args); 2918 struct compound_hdr hdr = { 2919 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2920 }; 2921 2922 encode_compound_hdr(xdr, req, &hdr); 2923 encode_sequence(xdr, &args->seq_args, &hdr); 2924 encode_putfh(xdr, NFS_FH(args->inode), &hdr); 2925 encode_layoutcommit(xdr, data->args.inode, args, &hdr); 2926 encode_getfattr(xdr, args->bitmask, &hdr); 2927 encode_nops(&hdr); 2928} 2929 2930/* 2931 * Encode LAYOUTRETURN request 2932 */ 2933static void nfs4_xdr_enc_layoutreturn(struct rpc_rqst *req, 2934 struct xdr_stream *xdr, 2935 struct nfs4_layoutreturn_args *args) 2936{ 2937 struct compound_hdr hdr = { 2938 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2939 }; 2940 2941 encode_compound_hdr(xdr, req, &hdr); 2942 encode_sequence(xdr, &args->seq_args, &hdr); 2943 encode_putfh(xdr, NFS_FH(args->inode), &hdr); 2944 encode_layoutreturn(xdr, args, &hdr); 2945 encode_nops(&hdr); 2946} 2947 2948/* 2949 * Encode SECINFO_NO_NAME request 2950 */ 2951static int nfs4_xdr_enc_secinfo_no_name(struct rpc_rqst *req, 2952 struct xdr_stream *xdr, 2953 struct nfs41_secinfo_no_name_args *args) 2954{ 2955 struct compound_hdr hdr = { 2956 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2957 }; 2958 2959 encode_compound_hdr(xdr, req, &hdr); 2960 encode_sequence(xdr, &args->seq_args, &hdr); 2961 encode_putrootfh(xdr, &hdr); 2962 encode_secinfo_no_name(xdr, args, &hdr); 2963 encode_nops(&hdr); 2964 return 0; 2965} 2966 2967/* 2968 * Encode TEST_STATEID request 2969 */ 2970static void nfs4_xdr_enc_test_stateid(struct rpc_rqst *req, 2971 struct xdr_stream *xdr, 2972 struct nfs41_test_stateid_args *args) 2973{ 2974 struct compound_hdr hdr = { 2975 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2976 }; 2977 2978 encode_compound_hdr(xdr, req, &hdr); 2979 encode_sequence(xdr, &args->seq_args, &hdr); 2980 encode_test_stateid(xdr, args, &hdr); 2981 encode_nops(&hdr); 2982} 2983 2984/* 2985 * Encode FREE_STATEID request 2986 */ 2987static void nfs4_xdr_enc_free_stateid(struct rpc_rqst *req, 2988 struct xdr_stream *xdr, 2989 struct nfs41_free_stateid_args *args) 2990{ 2991 struct compound_hdr hdr = { 2992 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2993 }; 2994 2995 encode_compound_hdr(xdr, req, &hdr); 2996 encode_sequence(xdr, &args->seq_args, &hdr); 2997 encode_free_stateid(xdr, args, &hdr); 2998 encode_nops(&hdr); 2999} 3000#endif /* CONFIG_NFS_V4_1 */ 3001 3002static void print_overflow_msg(const char *func, const struct xdr_stream *xdr) 3003{ 3004 dprintk("nfs: %s: prematurely hit end of receive buffer. " 3005 "Remaining buffer length is %tu words.\n", 3006 func, xdr->end - xdr->p); 3007} 3008 3009static int decode_opaque_inline(struct xdr_stream *xdr, unsigned int *len, char **string) 3010{ 3011 __be32 *p; 3012 3013 p = xdr_inline_decode(xdr, 4); 3014 if (unlikely(!p)) 3015 goto out_overflow; 3016 *len = be32_to_cpup(p); 3017 p = xdr_inline_decode(xdr, *len); 3018 if (unlikely(!p)) 3019 goto out_overflow; 3020 *string = (char *)p; 3021 return 0; 3022out_overflow: 3023 print_overflow_msg(__func__, xdr); 3024 return -EIO; 3025} 3026 3027static int decode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr) 3028{ 3029 __be32 *p; 3030 3031 p = xdr_inline_decode(xdr, 8); 3032 if (unlikely(!p)) 3033 goto out_overflow; 3034 hdr->status = be32_to_cpup(p++); 3035 hdr->taglen = be32_to_cpup(p); 3036 3037 p = xdr_inline_decode(xdr, hdr->taglen + 4); 3038 if (unlikely(!p)) 3039 goto out_overflow; 3040 hdr->tag = (char *)p; 3041 p += XDR_QUADLEN(hdr->taglen); 3042 hdr->nops = be32_to_cpup(p); 3043 if (unlikely(hdr->nops < 1)) 3044 return nfs4_stat_to_errno(hdr->status); 3045 return 0; 3046out_overflow: 3047 print_overflow_msg(__func__, xdr); 3048 return -EIO; 3049} 3050 3051static bool __decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected, 3052 int *nfs_retval) 3053{ 3054 __be32 *p; 3055 uint32_t opnum; 3056 int32_t nfserr; 3057 3058 p = xdr_inline_decode(xdr, 8); 3059 if (unlikely(!p)) 3060 goto out_overflow; 3061 opnum = be32_to_cpup(p++); 3062 if (unlikely(opnum != expected)) 3063 goto out_bad_operation; 3064 nfserr = be32_to_cpup(p); 3065 if (nfserr == NFS_OK) 3066 *nfs_retval = 0; 3067 else 3068 *nfs_retval = nfs4_stat_to_errno(nfserr); 3069 return true; 3070out_bad_operation: 3071 dprintk("nfs: Server returned operation" 3072 " %d but we issued a request for %d\n", 3073 opnum, expected); 3074 *nfs_retval = -EREMOTEIO; 3075 return false; 3076out_overflow: 3077 print_overflow_msg(__func__, xdr); 3078 *nfs_retval = -EIO; 3079 return false; 3080} 3081 3082static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected) 3083{ 3084 int retval; 3085 3086 __decode_op_hdr(xdr, expected, &retval); 3087 return retval; 3088} 3089 3090/* Dummy routine */ 3091static int decode_ace(struct xdr_stream *xdr, void *ace, struct nfs_client *clp) 3092{ 3093 __be32 *p; 3094 unsigned int strlen; 3095 char *str; 3096 3097 p = xdr_inline_decode(xdr, 12); 3098 if (likely(p)) 3099 return decode_opaque_inline(xdr, &strlen, &str); 3100 print_overflow_msg(__func__, xdr); 3101 return -EIO; 3102} 3103 3104static int decode_attr_bitmap(struct xdr_stream *xdr, uint32_t *bitmap) 3105{ 3106 uint32_t bmlen; 3107 __be32 *p; 3108 3109 p = xdr_inline_decode(xdr, 4); 3110 if (unlikely(!p)) 3111 goto out_overflow; 3112 bmlen = be32_to_cpup(p); 3113 3114 bitmap[0] = bitmap[1] = bitmap[2] = 0; 3115 p = xdr_inline_decode(xdr, (bmlen << 2)); 3116 if (unlikely(!p)) 3117 goto out_overflow; 3118 if (bmlen > 0) { 3119 bitmap[0] = be32_to_cpup(p++); 3120 if (bmlen > 1) { 3121 bitmap[1] = be32_to_cpup(p++); 3122 if (bmlen > 2) 3123 bitmap[2] = be32_to_cpup(p); 3124 } 3125 } 3126 return 0; 3127out_overflow: 3128 print_overflow_msg(__func__, xdr); 3129 return -EIO; 3130} 3131 3132static int decode_attr_length(struct xdr_stream *xdr, uint32_t *attrlen, unsigned int *savep) 3133{ 3134 __be32 *p; 3135 3136 p = xdr_inline_decode(xdr, 4); 3137 if (unlikely(!p)) 3138 goto out_overflow; 3139 *attrlen = be32_to_cpup(p); 3140 *savep = xdr_stream_pos(xdr); 3141 return 0; 3142out_overflow: 3143 print_overflow_msg(__func__, xdr); 3144 return -EIO; 3145} 3146 3147static int decode_attr_supported(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *bitmask) 3148{ 3149 if (likely(bitmap[0] & FATTR4_WORD0_SUPPORTED_ATTRS)) { 3150 int ret; 3151 ret = decode_attr_bitmap(xdr, bitmask); 3152 if (unlikely(ret < 0)) 3153 return ret; 3154 bitmap[0] &= ~FATTR4_WORD0_SUPPORTED_ATTRS; 3155 } else 3156 bitmask[0] = bitmask[1] = bitmask[2] = 0; 3157 dprintk("%s: bitmask=%08x:%08x:%08x\n", __func__, 3158 bitmask[0], bitmask[1], bitmask[2]); 3159 return 0; 3160} 3161 3162static int decode_attr_type(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *type) 3163{ 3164 __be32 *p; 3165 int ret = 0; 3166 3167 *type = 0; 3168 if (unlikely(bitmap[0] & (FATTR4_WORD0_TYPE - 1U))) 3169 return -EIO; 3170 if (likely(bitmap[0] & FATTR4_WORD0_TYPE)) { 3171 p = xdr_inline_decode(xdr, 4); 3172 if (unlikely(!p)) 3173 goto out_overflow; 3174 *type = be32_to_cpup(p); 3175 if (*type < NF4REG || *type > NF4NAMEDATTR) { 3176 dprintk("%s: bad type %d\n", __func__, *type); 3177 return -EIO; 3178 } 3179 bitmap[0] &= ~FATTR4_WORD0_TYPE; 3180 ret = NFS_ATTR_FATTR_TYPE; 3181 } 3182 dprintk("%s: type=0%o\n", __func__, nfs_type2fmt[*type]); 3183 return ret; 3184out_overflow: 3185 print_overflow_msg(__func__, xdr); 3186 return -EIO; 3187} 3188 3189static int decode_attr_fh_expire_type(struct xdr_stream *xdr, 3190 uint32_t *bitmap, uint32_t *type) 3191{ 3192 __be32 *p; 3193 3194 *type = 0; 3195 if (unlikely(bitmap[0] & (FATTR4_WORD0_FH_EXPIRE_TYPE - 1U))) 3196 return -EIO; 3197 if (likely(bitmap[0] & FATTR4_WORD0_FH_EXPIRE_TYPE)) { 3198 p = xdr_inline_decode(xdr, 4); 3199 if (unlikely(!p)) 3200 goto out_overflow; 3201 *type = be32_to_cpup(p); 3202 bitmap[0] &= ~FATTR4_WORD0_FH_EXPIRE_TYPE; 3203 } 3204 dprintk("%s: expire type=0x%x\n", __func__, *type); 3205 return 0; 3206out_overflow: 3207 print_overflow_msg(__func__, xdr); 3208 return -EIO; 3209} 3210 3211static int decode_attr_change(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *change) 3212{ 3213 __be32 *p; 3214 int ret = 0; 3215 3216 *change = 0; 3217 if (unlikely(bitmap[0] & (FATTR4_WORD0_CHANGE - 1U))) 3218 return -EIO; 3219 if (likely(bitmap[0] & FATTR4_WORD0_CHANGE)) { 3220 p = xdr_inline_decode(xdr, 8); 3221 if (unlikely(!p)) 3222 goto out_overflow; 3223 xdr_decode_hyper(p, change); 3224 bitmap[0] &= ~FATTR4_WORD0_CHANGE; 3225 ret = NFS_ATTR_FATTR_CHANGE; 3226 } 3227 dprintk("%s: change attribute=%Lu\n", __func__, 3228 (unsigned long long)*change); 3229 return ret; 3230out_overflow: 3231 print_overflow_msg(__func__, xdr); 3232 return -EIO; 3233} 3234 3235static int decode_attr_size(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *size) 3236{ 3237 __be32 *p; 3238 int ret = 0; 3239 3240 *size = 0; 3241 if (unlikely(bitmap[0] & (FATTR4_WORD0_SIZE - 1U))) 3242 return -EIO; 3243 if (likely(bitmap[0] & FATTR4_WORD0_SIZE)) { 3244 p = xdr_inline_decode(xdr, 8); 3245 if (unlikely(!p)) 3246 goto out_overflow; 3247 xdr_decode_hyper(p, size); 3248 bitmap[0] &= ~FATTR4_WORD0_SIZE; 3249 ret = NFS_ATTR_FATTR_SIZE; 3250 } 3251 dprintk("%s: file size=%Lu\n", __func__, (unsigned long long)*size); 3252 return ret; 3253out_overflow: 3254 print_overflow_msg(__func__, xdr); 3255 return -EIO; 3256} 3257 3258static int decode_attr_link_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) 3259{ 3260 __be32 *p; 3261 3262 *res = 0; 3263 if (unlikely(bitmap[0] & (FATTR4_WORD0_LINK_SUPPORT - 1U))) 3264 return -EIO; 3265 if (likely(bitmap[0] & FATTR4_WORD0_LINK_SUPPORT)) { 3266 p = xdr_inline_decode(xdr, 4); 3267 if (unlikely(!p)) 3268 goto out_overflow; 3269 *res = be32_to_cpup(p); 3270 bitmap[0] &= ~FATTR4_WORD0_LINK_SUPPORT; 3271 } 3272 dprintk("%s: link support=%s\n", __func__, *res == 0 ? "false" : "true"); 3273 return 0; 3274out_overflow: 3275 print_overflow_msg(__func__, xdr); 3276 return -EIO; 3277} 3278 3279static int decode_attr_symlink_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) 3280{ 3281 __be32 *p; 3282 3283 *res = 0; 3284 if (unlikely(bitmap[0] & (FATTR4_WORD0_SYMLINK_SUPPORT - 1U))) 3285 return -EIO; 3286 if (likely(bitmap[0] & FATTR4_WORD0_SYMLINK_SUPPORT)) { 3287 p = xdr_inline_decode(xdr, 4); 3288 if (unlikely(!p)) 3289 goto out_overflow; 3290 *res = be32_to_cpup(p); 3291 bitmap[0] &= ~FATTR4_WORD0_SYMLINK_SUPPORT; 3292 } 3293 dprintk("%s: symlink support=%s\n", __func__, *res == 0 ? "false" : "true"); 3294 return 0; 3295out_overflow: 3296 print_overflow_msg(__func__, xdr); 3297 return -EIO; 3298} 3299 3300static int decode_attr_fsid(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fsid *fsid) 3301{ 3302 __be32 *p; 3303 int ret = 0; 3304 3305 fsid->major = 0; 3306 fsid->minor = 0; 3307 if (unlikely(bitmap[0] & (FATTR4_WORD0_FSID - 1U))) 3308 return -EIO; 3309 if (likely(bitmap[0] & FATTR4_WORD0_FSID)) { 3310 p = xdr_inline_decode(xdr, 16); 3311 if (unlikely(!p)) 3312 goto out_overflow; 3313 p = xdr_decode_hyper(p, &fsid->major); 3314 xdr_decode_hyper(p, &fsid->minor); 3315 bitmap[0] &= ~FATTR4_WORD0_FSID; 3316 ret = NFS_ATTR_FATTR_FSID; 3317 } 3318 dprintk("%s: fsid=(0x%Lx/0x%Lx)\n", __func__, 3319 (unsigned long long)fsid->major, 3320 (unsigned long long)fsid->minor); 3321 return ret; 3322out_overflow: 3323 print_overflow_msg(__func__, xdr); 3324 return -EIO; 3325} 3326 3327static int decode_attr_lease_time(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) 3328{ 3329 __be32 *p; 3330 3331 *res = 60; 3332 if (unlikely(bitmap[0] & (FATTR4_WORD0_LEASE_TIME - 1U))) 3333 return -EIO; 3334 if (likely(bitmap[0] & FATTR4_WORD0_LEASE_TIME)) { 3335 p = xdr_inline_decode(xdr, 4); 3336 if (unlikely(!p)) 3337 goto out_overflow; 3338 *res = be32_to_cpup(p); 3339 bitmap[0] &= ~FATTR4_WORD0_LEASE_TIME; 3340 } 3341 dprintk("%s: file size=%u\n", __func__, (unsigned int)*res); 3342 return 0; 3343out_overflow: 3344 print_overflow_msg(__func__, xdr); 3345 return -EIO; 3346} 3347 3348static int decode_attr_error(struct xdr_stream *xdr, uint32_t *bitmap, int32_t *res) 3349{ 3350 __be32 *p; 3351 3352 if (unlikely(bitmap[0] & (FATTR4_WORD0_RDATTR_ERROR - 1U))) 3353 return -EIO; 3354 if (likely(bitmap[0] & FATTR4_WORD0_RDATTR_ERROR)) { 3355 p = xdr_inline_decode(xdr, 4); 3356 if (unlikely(!p)) 3357 goto out_overflow; 3358 bitmap[0] &= ~FATTR4_WORD0_RDATTR_ERROR; 3359 *res = -be32_to_cpup(p); 3360 } 3361 return 0; 3362out_overflow: 3363 print_overflow_msg(__func__, xdr); 3364 return -EIO; 3365} 3366 3367static int decode_attr_filehandle(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fh *fh) 3368{ 3369 __be32 *p; 3370 int len; 3371 3372 if (fh != NULL) 3373 memset(fh, 0, sizeof(*fh)); 3374 3375 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEHANDLE - 1U))) 3376 return -EIO; 3377 if (likely(bitmap[0] & FATTR4_WORD0_FILEHANDLE)) { 3378 p = xdr_inline_decode(xdr, 4); 3379 if (unlikely(!p)) 3380 goto out_overflow; 3381 len = be32_to_cpup(p); 3382 if (len > NFS4_FHSIZE) 3383 return -EIO; 3384 p = xdr_inline_decode(xdr, len); 3385 if (unlikely(!p)) 3386 goto out_overflow; 3387 if (fh != NULL) { 3388 memcpy(fh->data, p, len); 3389 fh->size = len; 3390 } 3391 bitmap[0] &= ~FATTR4_WORD0_FILEHANDLE; 3392 } 3393 return 0; 3394out_overflow: 3395 print_overflow_msg(__func__, xdr); 3396 return -EIO; 3397} 3398 3399static int decode_attr_aclsupport(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) 3400{ 3401 __be32 *p; 3402 3403 *res = 0; 3404 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACLSUPPORT - 1U))) 3405 return -EIO; 3406 if (likely(bitmap[0] & FATTR4_WORD0_ACLSUPPORT)) { 3407 p = xdr_inline_decode(xdr, 4); 3408 if (unlikely(!p)) 3409 goto out_overflow; 3410 *res = be32_to_cpup(p); 3411 bitmap[0] &= ~FATTR4_WORD0_ACLSUPPORT; 3412 } 3413 dprintk("%s: ACLs supported=%u\n", __func__, (unsigned int)*res); 3414 return 0; 3415out_overflow: 3416 print_overflow_msg(__func__, xdr); 3417 return -EIO; 3418} 3419 3420static int decode_attr_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid) 3421{ 3422 __be32 *p; 3423 int ret = 0; 3424 3425 *fileid = 0; 3426 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEID - 1U))) 3427 return -EIO; 3428 if (likely(bitmap[0] & FATTR4_WORD0_FILEID)) { 3429 p = xdr_inline_decode(xdr, 8); 3430 if (unlikely(!p)) 3431 goto out_overflow; 3432 xdr_decode_hyper(p, fileid); 3433 bitmap[0] &= ~FATTR4_WORD0_FILEID; 3434 ret = NFS_ATTR_FATTR_FILEID; 3435 } 3436 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid); 3437 return ret; 3438out_overflow: 3439 print_overflow_msg(__func__, xdr); 3440 return -EIO; 3441} 3442 3443static int decode_attr_mounted_on_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid) 3444{ 3445 __be32 *p; 3446 int ret = 0; 3447 3448 *fileid = 0; 3449 if (unlikely(bitmap[1] & (FATTR4_WORD1_MOUNTED_ON_FILEID - 1U))) 3450 return -EIO; 3451 if (likely(bitmap[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)) { 3452 p = xdr_inline_decode(xdr, 8); 3453 if (unlikely(!p)) 3454 goto out_overflow; 3455 xdr_decode_hyper(p, fileid); 3456 bitmap[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID; 3457 ret = NFS_ATTR_FATTR_MOUNTED_ON_FILEID; 3458 } 3459 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid); 3460 return ret; 3461out_overflow: 3462 print_overflow_msg(__func__, xdr); 3463 return -EIO; 3464} 3465 3466static int decode_attr_files_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 3467{ 3468 __be32 *p; 3469 int status = 0; 3470 3471 *res = 0; 3472 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_AVAIL - 1U))) 3473 return -EIO; 3474 if (likely(bitmap[0] & FATTR4_WORD0_FILES_AVAIL)) { 3475 p = xdr_inline_decode(xdr, 8); 3476 if (unlikely(!p)) 3477 goto out_overflow; 3478 xdr_decode_hyper(p, res); 3479 bitmap[0] &= ~FATTR4_WORD0_FILES_AVAIL; 3480 } 3481 dprintk("%s: files avail=%Lu\n", __func__, (unsigned long long)*res); 3482 return status; 3483out_overflow: 3484 print_overflow_msg(__func__, xdr); 3485 return -EIO; 3486} 3487 3488static int decode_attr_files_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 3489{ 3490 __be32 *p; 3491 int status = 0; 3492 3493 *res = 0; 3494 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_FREE - 1U))) 3495 return -EIO; 3496 if (likely(bitmap[0] & FATTR4_WORD0_FILES_FREE)) { 3497 p = xdr_inline_decode(xdr, 8); 3498 if (unlikely(!p)) 3499 goto out_overflow; 3500 xdr_decode_hyper(p, res); 3501 bitmap[0] &= ~FATTR4_WORD0_FILES_FREE; 3502 } 3503 dprintk("%s: files free=%Lu\n", __func__, (unsigned long long)*res); 3504 return status; 3505out_overflow: 3506 print_overflow_msg(__func__, xdr); 3507 return -EIO; 3508} 3509 3510static int decode_attr_files_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 3511{ 3512 __be32 *p; 3513 int status = 0; 3514 3515 *res = 0; 3516 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_TOTAL - 1U))) 3517 return -EIO; 3518 if (likely(bitmap[0] & FATTR4_WORD0_FILES_TOTAL)) { 3519 p = xdr_inline_decode(xdr, 8); 3520 if (unlikely(!p)) 3521 goto out_overflow; 3522 xdr_decode_hyper(p, res); 3523 bitmap[0] &= ~FATTR4_WORD0_FILES_TOTAL; 3524 } 3525 dprintk("%s: files total=%Lu\n", __func__, (unsigned long long)*res); 3526 return status; 3527out_overflow: 3528 print_overflow_msg(__func__, xdr); 3529 return -EIO; 3530} 3531 3532static int decode_pathname(struct xdr_stream *xdr, struct nfs4_pathname *path) 3533{ 3534 u32 n; 3535 __be32 *p; 3536 int status = 0; 3537 3538 p = xdr_inline_decode(xdr, 4); 3539 if (unlikely(!p)) 3540 goto out_overflow; 3541 n = be32_to_cpup(p); 3542 if (n == 0) 3543 goto root_path; 3544 dprintk("pathname4: "); 3545 if (n > NFS4_PATHNAME_MAXCOMPONENTS) { 3546 dprintk("cannot parse %d components in path\n", n); 3547 goto out_eio; 3548 } 3549 for (path->ncomponents = 0; path->ncomponents < n; path->ncomponents++) { 3550 struct nfs4_string *component = &path->components[path->ncomponents]; 3551 status = decode_opaque_inline(xdr, &component->len, &component->data); 3552 if (unlikely(status != 0)) 3553 goto out_eio; 3554 ifdebug (XDR) 3555 pr_cont("%s%.*s ", 3556 (path->ncomponents != n ? "/ " : ""), 3557 component->len, component->data); 3558 } 3559out: 3560 return status; 3561root_path: 3562/* a root pathname is sent as a zero component4 */ 3563 path->ncomponents = 1; 3564 path->components[0].len=0; 3565 path->components[0].data=NULL; 3566 dprintk("pathname4: /\n"); 3567 goto out; 3568out_eio: 3569 dprintk(" status %d", status); 3570 status = -EIO; 3571 goto out; 3572out_overflow: 3573 print_overflow_msg(__func__, xdr); 3574 return -EIO; 3575} 3576 3577static int decode_attr_fs_locations(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_fs_locations *res) 3578{ 3579 int n; 3580 __be32 *p; 3581 int status = -EIO; 3582 3583 if (unlikely(bitmap[0] & (FATTR4_WORD0_FS_LOCATIONS -1U))) 3584 goto out; 3585 status = 0; 3586 if (unlikely(!(bitmap[0] & FATTR4_WORD0_FS_LOCATIONS))) 3587 goto out; 3588 status = -EIO; 3589 /* Ignore borken servers that return unrequested attrs */ 3590 if (unlikely(res == NULL)) 3591 goto out; 3592 dprintk("%s: fsroot:\n", __func__); 3593 status = decode_pathname(xdr, &res->fs_path); 3594 if (unlikely(status != 0)) 3595 goto out; 3596 p = xdr_inline_decode(xdr, 4); 3597 if (unlikely(!p)) 3598 goto out_overflow; 3599 n = be32_to_cpup(p); 3600 if (n <= 0) 3601 goto out_eio; 3602 for (res->nlocations = 0; res->nlocations < n; res->nlocations++) { 3603 u32 m; 3604 struct nfs4_fs_location *loc; 3605 3606 if (res->nlocations == NFS4_FS_LOCATIONS_MAXENTRIES) 3607 break; 3608 loc = &res->locations[res->nlocations]; 3609 p = xdr_inline_decode(xdr, 4); 3610 if (unlikely(!p)) 3611 goto out_overflow; 3612 m = be32_to_cpup(p); 3613 3614 dprintk("%s: servers:\n", __func__); 3615 for (loc->nservers = 0; loc->nservers < m; loc->nservers++) { 3616 struct nfs4_string *server; 3617 3618 if (loc->nservers == NFS4_FS_LOCATION_MAXSERVERS) { 3619 unsigned int i; 3620 dprintk("%s: using first %u of %u servers " 3621 "returned for location %u\n", 3622 __func__, 3623 NFS4_FS_LOCATION_MAXSERVERS, 3624 m, res->nlocations); 3625 for (i = loc->nservers; i < m; i++) { 3626 unsigned int len; 3627 char *data; 3628 status = decode_opaque_inline(xdr, &len, &data); 3629 if (unlikely(status != 0)) 3630 goto out_eio; 3631 } 3632 break; 3633 } 3634 server = &loc->servers[loc->nservers]; 3635 status = decode_opaque_inline(xdr, &server->len, &server->data); 3636 if (unlikely(status != 0)) 3637 goto out_eio; 3638 dprintk("%s ", server->data); 3639 } 3640 status = decode_pathname(xdr, &loc->rootpath); 3641 if (unlikely(status != 0)) 3642 goto out_eio; 3643 } 3644 if (res->nlocations != 0) 3645 status = NFS_ATTR_FATTR_V4_LOCATIONS; 3646out: 3647 dprintk("%s: fs_locations done, error = %d\n", __func__, status); 3648 return status; 3649out_overflow: 3650 print_overflow_msg(__func__, xdr); 3651out_eio: 3652 status = -EIO; 3653 goto out; 3654} 3655 3656static int decode_attr_maxfilesize(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 3657{ 3658 __be32 *p; 3659 int status = 0; 3660 3661 *res = 0; 3662 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXFILESIZE - 1U))) 3663 return -EIO; 3664 if (likely(bitmap[0] & FATTR4_WORD0_MAXFILESIZE)) { 3665 p = xdr_inline_decode(xdr, 8); 3666 if (unlikely(!p)) 3667 goto out_overflow; 3668 xdr_decode_hyper(p, res); 3669 bitmap[0] &= ~FATTR4_WORD0_MAXFILESIZE; 3670 } 3671 dprintk("%s: maxfilesize=%Lu\n", __func__, (unsigned long long)*res); 3672 return status; 3673out_overflow: 3674 print_overflow_msg(__func__, xdr); 3675 return -EIO; 3676} 3677 3678static int decode_attr_maxlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxlink) 3679{ 3680 __be32 *p; 3681 int status = 0; 3682 3683 *maxlink = 1; 3684 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXLINK - 1U))) 3685 return -EIO; 3686 if (likely(bitmap[0] & FATTR4_WORD0_MAXLINK)) { 3687 p = xdr_inline_decode(xdr, 4); 3688 if (unlikely(!p)) 3689 goto out_overflow; 3690 *maxlink = be32_to_cpup(p); 3691 bitmap[0] &= ~FATTR4_WORD0_MAXLINK; 3692 } 3693 dprintk("%s: maxlink=%u\n", __func__, *maxlink); 3694 return status; 3695out_overflow: 3696 print_overflow_msg(__func__, xdr); 3697 return -EIO; 3698} 3699 3700static int decode_attr_maxname(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxname) 3701{ 3702 __be32 *p; 3703 int status = 0; 3704 3705 *maxname = 1024; 3706 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXNAME - 1U))) 3707 return -EIO; 3708 if (likely(bitmap[0] & FATTR4_WORD0_MAXNAME)) { 3709 p = xdr_inline_decode(xdr, 4); 3710 if (unlikely(!p)) 3711 goto out_overflow; 3712 *maxname = be32_to_cpup(p); 3713 bitmap[0] &= ~FATTR4_WORD0_MAXNAME; 3714 } 3715 dprintk("%s: maxname=%u\n", __func__, *maxname); 3716 return status; 3717out_overflow: 3718 print_overflow_msg(__func__, xdr); 3719 return -EIO; 3720} 3721 3722static int decode_attr_maxread(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) 3723{ 3724 __be32 *p; 3725 int status = 0; 3726 3727 *res = 1024; 3728 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXREAD - 1U))) 3729 return -EIO; 3730 if (likely(bitmap[0] & FATTR4_WORD0_MAXREAD)) { 3731 uint64_t maxread; 3732 p = xdr_inline_decode(xdr, 8); 3733 if (unlikely(!p)) 3734 goto out_overflow; 3735 xdr_decode_hyper(p, &maxread); 3736 if (maxread > 0x7FFFFFFF) 3737 maxread = 0x7FFFFFFF; 3738 *res = (uint32_t)maxread; 3739 bitmap[0] &= ~FATTR4_WORD0_MAXREAD; 3740 } 3741 dprintk("%s: maxread=%lu\n", __func__, (unsigned long)*res); 3742 return status; 3743out_overflow: 3744 print_overflow_msg(__func__, xdr); 3745 return -EIO; 3746} 3747 3748static int decode_attr_maxwrite(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) 3749{ 3750 __be32 *p; 3751 int status = 0; 3752 3753 *res = 1024; 3754 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXWRITE - 1U))) 3755 return -EIO; 3756 if (likely(bitmap[0] & FATTR4_WORD0_MAXWRITE)) { 3757 uint64_t maxwrite; 3758 p = xdr_inline_decode(xdr, 8); 3759 if (unlikely(!p)) 3760 goto out_overflow; 3761 xdr_decode_hyper(p, &maxwrite); 3762 if (maxwrite > 0x7FFFFFFF) 3763 maxwrite = 0x7FFFFFFF; 3764 *res = (uint32_t)maxwrite; 3765 bitmap[0] &= ~FATTR4_WORD0_MAXWRITE; 3766 } 3767 dprintk("%s: maxwrite=%lu\n", __func__, (unsigned long)*res); 3768 return status; 3769out_overflow: 3770 print_overflow_msg(__func__, xdr); 3771 return -EIO; 3772} 3773 3774static int decode_attr_mode(struct xdr_stream *xdr, uint32_t *bitmap, umode_t *mode) 3775{ 3776 uint32_t tmp; 3777 __be32 *p; 3778 int ret = 0; 3779 3780 *mode = 0; 3781 if (unlikely(bitmap[1] & (FATTR4_WORD1_MODE - 1U))) 3782 return -EIO; 3783 if (likely(bitmap[1] & FATTR4_WORD1_MODE)) { 3784 p = xdr_inline_decode(xdr, 4); 3785 if (unlikely(!p)) 3786 goto out_overflow; 3787 tmp = be32_to_cpup(p); 3788 *mode = tmp & ~S_IFMT; 3789 bitmap[1] &= ~FATTR4_WORD1_MODE; 3790 ret = NFS_ATTR_FATTR_MODE; 3791 } 3792 dprintk("%s: file mode=0%o\n", __func__, (unsigned int)*mode); 3793 return ret; 3794out_overflow: 3795 print_overflow_msg(__func__, xdr); 3796 return -EIO; 3797} 3798 3799static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *nlink) 3800{ 3801 __be32 *p; 3802 int ret = 0; 3803 3804 *nlink = 1; 3805 if (unlikely(bitmap[1] & (FATTR4_WORD1_NUMLINKS - 1U))) 3806 return -EIO; 3807 if (likely(bitmap[1] & FATTR4_WORD1_NUMLINKS)) { 3808 p = xdr_inline_decode(xdr, 4); 3809 if (unlikely(!p)) 3810 goto out_overflow; 3811 *nlink = be32_to_cpup(p); 3812 bitmap[1] &= ~FATTR4_WORD1_NUMLINKS; 3813 ret = NFS_ATTR_FATTR_NLINK; 3814 } 3815 dprintk("%s: nlink=%u\n", __func__, (unsigned int)*nlink); 3816 return ret; 3817out_overflow: 3818 print_overflow_msg(__func__, xdr); 3819 return -EIO; 3820} 3821 3822static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap, 3823 const struct nfs_server *server, kuid_t *uid, 3824 struct nfs4_string *owner_name) 3825{ 3826 uint32_t len; 3827 __be32 *p; 3828 int ret = 0; 3829 3830 *uid = make_kuid(&init_user_ns, -2); 3831 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER - 1U))) 3832 return -EIO; 3833 if (likely(bitmap[1] & FATTR4_WORD1_OWNER)) { 3834 p = xdr_inline_decode(xdr, 4); 3835 if (unlikely(!p)) 3836 goto out_overflow; 3837 len = be32_to_cpup(p); 3838 p = xdr_inline_decode(xdr, len); 3839 if (unlikely(!p)) 3840 goto out_overflow; 3841 if (owner_name != NULL) { 3842 owner_name->data = kmemdup(p, len, GFP_NOWAIT); 3843 if (owner_name->data != NULL) { 3844 owner_name->len = len; 3845 ret = NFS_ATTR_FATTR_OWNER_NAME; 3846 } 3847 } else if (len < XDR_MAX_NETOBJ) { 3848 if (nfs_map_name_to_uid(server, (char *)p, len, uid) == 0) 3849 ret = NFS_ATTR_FATTR_OWNER; 3850 else 3851 dprintk("%s: nfs_map_name_to_uid failed!\n", 3852 __func__); 3853 } else 3854 dprintk("%s: name too long (%u)!\n", 3855 __func__, len); 3856 bitmap[1] &= ~FATTR4_WORD1_OWNER; 3857 } 3858 dprintk("%s: uid=%d\n", __func__, (int)from_kuid(&init_user_ns, *uid)); 3859 return ret; 3860out_overflow: 3861 print_overflow_msg(__func__, xdr); 3862 return -EIO; 3863} 3864 3865static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap, 3866 const struct nfs_server *server, kgid_t *gid, 3867 struct nfs4_string *group_name) 3868{ 3869 uint32_t len; 3870 __be32 *p; 3871 int ret = 0; 3872 3873 *gid = make_kgid(&init_user_ns, -2); 3874 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER_GROUP - 1U))) 3875 return -EIO; 3876 if (likely(bitmap[1] & FATTR4_WORD1_OWNER_GROUP)) { 3877 p = xdr_inline_decode(xdr, 4); 3878 if (unlikely(!p)) 3879 goto out_overflow; 3880 len = be32_to_cpup(p); 3881 p = xdr_inline_decode(xdr, len); 3882 if (unlikely(!p)) 3883 goto out_overflow; 3884 if (group_name != NULL) { 3885 group_name->data = kmemdup(p, len, GFP_NOWAIT); 3886 if (group_name->data != NULL) { 3887 group_name->len = len; 3888 ret = NFS_ATTR_FATTR_GROUP_NAME; 3889 } 3890 } else if (len < XDR_MAX_NETOBJ) { 3891 if (nfs_map_group_to_gid(server, (char *)p, len, gid) == 0) 3892 ret = NFS_ATTR_FATTR_GROUP; 3893 else 3894 dprintk("%s: nfs_map_group_to_gid failed!\n", 3895 __func__); 3896 } else 3897 dprintk("%s: name too long (%u)!\n", 3898 __func__, len); 3899 bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP; 3900 } 3901 dprintk("%s: gid=%d\n", __func__, (int)from_kgid(&init_user_ns, *gid)); 3902 return ret; 3903out_overflow: 3904 print_overflow_msg(__func__, xdr); 3905 return -EIO; 3906} 3907 3908static int decode_attr_rdev(struct xdr_stream *xdr, uint32_t *bitmap, dev_t *rdev) 3909{ 3910 uint32_t major = 0, minor = 0; 3911 __be32 *p; 3912 int ret = 0; 3913 3914 *rdev = MKDEV(0,0); 3915 if (unlikely(bitmap[1] & (FATTR4_WORD1_RAWDEV - 1U))) 3916 return -EIO; 3917 if (likely(bitmap[1] & FATTR4_WORD1_RAWDEV)) { 3918 dev_t tmp; 3919 3920 p = xdr_inline_decode(xdr, 8); 3921 if (unlikely(!p)) 3922 goto out_overflow; 3923 major = be32_to_cpup(p++); 3924 minor = be32_to_cpup(p); 3925 tmp = MKDEV(major, minor); 3926 if (MAJOR(tmp) == major && MINOR(tmp) == minor) 3927 *rdev = tmp; 3928 bitmap[1] &= ~ FATTR4_WORD1_RAWDEV; 3929 ret = NFS_ATTR_FATTR_RDEV; 3930 } 3931 dprintk("%s: rdev=(0x%x:0x%x)\n", __func__, major, minor); 3932 return ret; 3933out_overflow: 3934 print_overflow_msg(__func__, xdr); 3935 return -EIO; 3936} 3937 3938static int decode_attr_space_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 3939{ 3940 __be32 *p; 3941 int status = 0; 3942 3943 *res = 0; 3944 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_AVAIL - 1U))) 3945 return -EIO; 3946 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_AVAIL)) { 3947 p = xdr_inline_decode(xdr, 8); 3948 if (unlikely(!p)) 3949 goto out_overflow; 3950 xdr_decode_hyper(p, res); 3951 bitmap[1] &= ~FATTR4_WORD1_SPACE_AVAIL; 3952 } 3953 dprintk("%s: space avail=%Lu\n", __func__, (unsigned long long)*res); 3954 return status; 3955out_overflow: 3956 print_overflow_msg(__func__, xdr); 3957 return -EIO; 3958} 3959 3960static int decode_attr_space_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 3961{ 3962 __be32 *p; 3963 int status = 0; 3964 3965 *res = 0; 3966 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_FREE - 1U))) 3967 return -EIO; 3968 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_FREE)) { 3969 p = xdr_inline_decode(xdr, 8); 3970 if (unlikely(!p)) 3971 goto out_overflow; 3972 xdr_decode_hyper(p, res); 3973 bitmap[1] &= ~FATTR4_WORD1_SPACE_FREE; 3974 } 3975 dprintk("%s: space free=%Lu\n", __func__, (unsigned long long)*res); 3976 return status; 3977out_overflow: 3978 print_overflow_msg(__func__, xdr); 3979 return -EIO; 3980} 3981 3982static int decode_attr_space_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 3983{ 3984 __be32 *p; 3985 int status = 0; 3986 3987 *res = 0; 3988 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_TOTAL - 1U))) 3989 return -EIO; 3990 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_TOTAL)) { 3991 p = xdr_inline_decode(xdr, 8); 3992 if (unlikely(!p)) 3993 goto out_overflow; 3994 xdr_decode_hyper(p, res); 3995 bitmap[1] &= ~FATTR4_WORD1_SPACE_TOTAL; 3996 } 3997 dprintk("%s: space total=%Lu\n", __func__, (unsigned long long)*res); 3998 return status; 3999out_overflow: 4000 print_overflow_msg(__func__, xdr); 4001 return -EIO; 4002} 4003 4004static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *used) 4005{ 4006 __be32 *p; 4007 int ret = 0; 4008 4009 *used = 0; 4010 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_USED - 1U))) 4011 return -EIO; 4012 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_USED)) { 4013 p = xdr_inline_decode(xdr, 8); 4014 if (unlikely(!p)) 4015 goto out_overflow; 4016 xdr_decode_hyper(p, used); 4017 bitmap[1] &= ~FATTR4_WORD1_SPACE_USED; 4018 ret = NFS_ATTR_FATTR_SPACE_USED; 4019 } 4020 dprintk("%s: space used=%Lu\n", __func__, 4021 (unsigned long long)*used); 4022 return ret; 4023out_overflow: 4024 print_overflow_msg(__func__, xdr); 4025 return -EIO; 4026} 4027 4028static int decode_attr_time(struct xdr_stream *xdr, struct timespec *time) 4029{ 4030 __be32 *p; 4031 uint64_t sec; 4032 uint32_t nsec; 4033 4034 p = xdr_inline_decode(xdr, 12); 4035 if (unlikely(!p)) 4036 goto out_overflow; 4037 p = xdr_decode_hyper(p, &sec); 4038 nsec = be32_to_cpup(p); 4039 time->tv_sec = (time_t)sec; 4040 time->tv_nsec = (long)nsec; 4041 return 0; 4042out_overflow: 4043 print_overflow_msg(__func__, xdr); 4044 return -EIO; 4045} 4046 4047static int decode_attr_time_access(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time) 4048{ 4049 int status = 0; 4050 4051 time->tv_sec = 0; 4052 time->tv_nsec = 0; 4053 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_ACCESS - 1U))) 4054 return -EIO; 4055 if (likely(bitmap[1] & FATTR4_WORD1_TIME_ACCESS)) { 4056 status = decode_attr_time(xdr, time); 4057 if (status == 0) 4058 status = NFS_ATTR_FATTR_ATIME; 4059 bitmap[1] &= ~FATTR4_WORD1_TIME_ACCESS; 4060 } 4061 dprintk("%s: atime=%ld\n", __func__, (long)time->tv_sec); 4062 return status; 4063} 4064 4065static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time) 4066{ 4067 int status = 0; 4068 4069 time->tv_sec = 0; 4070 time->tv_nsec = 0; 4071 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_METADATA - 1U))) 4072 return -EIO; 4073 if (likely(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) { 4074 status = decode_attr_time(xdr, time); 4075 if (status == 0) 4076 status = NFS_ATTR_FATTR_CTIME; 4077 bitmap[1] &= ~FATTR4_WORD1_TIME_METADATA; 4078 } 4079 dprintk("%s: ctime=%ld\n", __func__, (long)time->tv_sec); 4080 return status; 4081} 4082 4083static int decode_attr_time_delta(struct xdr_stream *xdr, uint32_t *bitmap, 4084 struct timespec *time) 4085{ 4086 int status = 0; 4087 4088 time->tv_sec = 0; 4089 time->tv_nsec = 0; 4090 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_DELTA - 1U))) 4091 return -EIO; 4092 if (likely(bitmap[1] & FATTR4_WORD1_TIME_DELTA)) { 4093 status = decode_attr_time(xdr, time); 4094 bitmap[1] &= ~FATTR4_WORD1_TIME_DELTA; 4095 } 4096 dprintk("%s: time_delta=%ld %ld\n", __func__, (long)time->tv_sec, 4097 (long)time->tv_nsec); 4098 return status; 4099} 4100 4101static int decode_attr_security_label(struct xdr_stream *xdr, uint32_t *bitmap, 4102 struct nfs4_label *label) 4103{ 4104 uint32_t pi = 0; 4105 uint32_t lfs = 0; 4106 __u32 len; 4107 __be32 *p; 4108 int status = 0; 4109 4110 if (unlikely(bitmap[2] & (FATTR4_WORD2_SECURITY_LABEL - 1U))) 4111 return -EIO; 4112 if (likely(bitmap[2] & FATTR4_WORD2_SECURITY_LABEL)) { 4113 p = xdr_inline_decode(xdr, 4); 4114 if (unlikely(!p)) 4115 goto out_overflow; 4116 lfs = be32_to_cpup(p++); 4117 p = xdr_inline_decode(xdr, 4); 4118 if (unlikely(!p)) 4119 goto out_overflow; 4120 pi = be32_to_cpup(p++); 4121 p = xdr_inline_decode(xdr, 4); 4122 if (unlikely(!p)) 4123 goto out_overflow; 4124 len = be32_to_cpup(p++); 4125 p = xdr_inline_decode(xdr, len); 4126 if (unlikely(!p)) 4127 goto out_overflow; 4128 if (len < NFS4_MAXLABELLEN) { 4129 if (label) { 4130 memcpy(label->label, p, len); 4131 label->len = len; 4132 label->pi = pi; 4133 label->lfs = lfs; 4134 status = NFS_ATTR_FATTR_V4_SECURITY_LABEL; 4135 } 4136 bitmap[2] &= ~FATTR4_WORD2_SECURITY_LABEL; 4137 } else 4138 printk(KERN_WARNING "%s: label too long (%u)!\n", 4139 __func__, len); 4140 } 4141 if (label && label->label) 4142 dprintk("%s: label=%s, len=%d, PI=%d, LFS=%d\n", __func__, 4143 (char *)label->label, label->len, label->pi, label->lfs); 4144 return status; 4145 4146out_overflow: 4147 print_overflow_msg(__func__, xdr); 4148 return -EIO; 4149} 4150 4151static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time) 4152{ 4153 int status = 0; 4154 4155 time->tv_sec = 0; 4156 time->tv_nsec = 0; 4157 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_MODIFY - 1U))) 4158 return -EIO; 4159 if (likely(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) { 4160 status = decode_attr_time(xdr, time); 4161 if (status == 0) 4162 status = NFS_ATTR_FATTR_MTIME; 4163 bitmap[1] &= ~FATTR4_WORD1_TIME_MODIFY; 4164 } 4165 dprintk("%s: mtime=%ld\n", __func__, (long)time->tv_sec); 4166 return status; 4167} 4168 4169static int verify_attr_len(struct xdr_stream *xdr, unsigned int savep, uint32_t attrlen) 4170{ 4171 unsigned int attrwords = XDR_QUADLEN(attrlen); 4172 unsigned int nwords = (xdr_stream_pos(xdr) - savep) >> 2; 4173 4174 if (unlikely(attrwords != nwords)) { 4175 dprintk("%s: server returned incorrect attribute length: " 4176 "%u %c %u\n", 4177 __func__, 4178 attrwords << 2, 4179 (attrwords < nwords) ? '<' : '>', 4180 nwords << 2); 4181 return -EIO; 4182 } 4183 return 0; 4184} 4185 4186static int decode_change_info(struct xdr_stream *xdr, struct nfs4_change_info *cinfo) 4187{ 4188 __be32 *p; 4189 4190 p = xdr_inline_decode(xdr, 20); 4191 if (unlikely(!p)) 4192 goto out_overflow; 4193 cinfo->atomic = be32_to_cpup(p++); 4194 p = xdr_decode_hyper(p, &cinfo->before); 4195 xdr_decode_hyper(p, &cinfo->after); 4196 return 0; 4197out_overflow: 4198 print_overflow_msg(__func__, xdr); 4199 return -EIO; 4200} 4201 4202static int decode_access(struct xdr_stream *xdr, u32 *supported, u32 *access) 4203{ 4204 __be32 *p; 4205 uint32_t supp, acc; 4206 int status; 4207 4208 status = decode_op_hdr(xdr, OP_ACCESS); 4209 if (status) 4210 return status; 4211 p = xdr_inline_decode(xdr, 8); 4212 if (unlikely(!p)) 4213 goto out_overflow; 4214 supp = be32_to_cpup(p++); 4215 acc = be32_to_cpup(p); 4216 *supported = supp; 4217 *access = acc; 4218 return 0; 4219out_overflow: 4220 print_overflow_msg(__func__, xdr); 4221 return -EIO; 4222} 4223 4224static int decode_opaque_fixed(struct xdr_stream *xdr, void *buf, size_t len) 4225{ 4226 __be32 *p; 4227 4228 p = xdr_inline_decode(xdr, len); 4229 if (likely(p)) { 4230 memcpy(buf, p, len); 4231 return 0; 4232 } 4233 print_overflow_msg(__func__, xdr); 4234 return -EIO; 4235} 4236 4237static int decode_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid) 4238{ 4239 return decode_opaque_fixed(xdr, stateid, NFS4_STATEID_SIZE); 4240} 4241 4242static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res) 4243{ 4244 int status; 4245 4246 status = decode_op_hdr(xdr, OP_CLOSE); 4247 if (status != -EIO) 4248 nfs_increment_open_seqid(status, res->seqid); 4249 if (!status) 4250 status = decode_stateid(xdr, &res->stateid); 4251 return status; 4252} 4253 4254static int decode_verifier(struct xdr_stream *xdr, void *verifier) 4255{ 4256 return decode_opaque_fixed(xdr, verifier, NFS4_VERIFIER_SIZE); 4257} 4258 4259static int decode_write_verifier(struct xdr_stream *xdr, struct nfs_write_verifier *verifier) 4260{ 4261 return decode_opaque_fixed(xdr, verifier->data, NFS4_VERIFIER_SIZE); 4262} 4263 4264static int decode_commit(struct xdr_stream *xdr, struct nfs_commitres *res) 4265{ 4266 int status; 4267 4268 status = decode_op_hdr(xdr, OP_COMMIT); 4269 if (!status) 4270 status = decode_write_verifier(xdr, &res->verf->verifier); 4271 return status; 4272} 4273 4274static int decode_create(struct xdr_stream *xdr, struct nfs4_change_info *cinfo) 4275{ 4276 __be32 *p; 4277 uint32_t bmlen; 4278 int status; 4279 4280 status = decode_op_hdr(xdr, OP_CREATE); 4281 if (status) 4282 return status; 4283 if ((status = decode_change_info(xdr, cinfo))) 4284 return status; 4285 p = xdr_inline_decode(xdr, 4); 4286 if (unlikely(!p)) 4287 goto out_overflow; 4288 bmlen = be32_to_cpup(p); 4289 p = xdr_inline_decode(xdr, bmlen << 2); 4290 if (likely(p)) 4291 return 0; 4292out_overflow: 4293 print_overflow_msg(__func__, xdr); 4294 return -EIO; 4295} 4296 4297static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_res *res) 4298{ 4299 unsigned int savep; 4300 uint32_t attrlen, bitmap[3] = {0}; 4301 int status; 4302 4303 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) 4304 goto xdr_error; 4305 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) 4306 goto xdr_error; 4307 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) 4308 goto xdr_error; 4309 if ((status = decode_attr_supported(xdr, bitmap, res->attr_bitmask)) != 0) 4310 goto xdr_error; 4311 if ((status = decode_attr_fh_expire_type(xdr, bitmap, 4312 &res->fh_expire_type)) != 0) 4313 goto xdr_error; 4314 if ((status = decode_attr_link_support(xdr, bitmap, &res->has_links)) != 0) 4315 goto xdr_error; 4316 if ((status = decode_attr_symlink_support(xdr, bitmap, &res->has_symlinks)) != 0) 4317 goto xdr_error; 4318 if ((status = decode_attr_aclsupport(xdr, bitmap, &res->acl_bitmask)) != 0) 4319 goto xdr_error; 4320 status = verify_attr_len(xdr, savep, attrlen); 4321xdr_error: 4322 dprintk("%s: xdr returned %d!\n", __func__, -status); 4323 return status; 4324} 4325 4326static int decode_statfs(struct xdr_stream *xdr, struct nfs_fsstat *fsstat) 4327{ 4328 unsigned int savep; 4329 uint32_t attrlen, bitmap[3] = {0}; 4330 int status; 4331 4332 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) 4333 goto xdr_error; 4334 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) 4335 goto xdr_error; 4336 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) 4337 goto xdr_error; 4338 4339 if ((status = decode_attr_files_avail(xdr, bitmap, &fsstat->afiles)) != 0) 4340 goto xdr_error; 4341 if ((status = decode_attr_files_free(xdr, bitmap, &fsstat->ffiles)) != 0) 4342 goto xdr_error; 4343 if ((status = decode_attr_files_total(xdr, bitmap, &fsstat->tfiles)) != 0) 4344 goto xdr_error; 4345 if ((status = decode_attr_space_avail(xdr, bitmap, &fsstat->abytes)) != 0) 4346 goto xdr_error; 4347 if ((status = decode_attr_space_free(xdr, bitmap, &fsstat->fbytes)) != 0) 4348 goto xdr_error; 4349 if ((status = decode_attr_space_total(xdr, bitmap, &fsstat->tbytes)) != 0) 4350 goto xdr_error; 4351 4352 status = verify_attr_len(xdr, savep, attrlen); 4353xdr_error: 4354 dprintk("%s: xdr returned %d!\n", __func__, -status); 4355 return status; 4356} 4357 4358static int decode_pathconf(struct xdr_stream *xdr, struct nfs_pathconf *pathconf) 4359{ 4360 unsigned int savep; 4361 uint32_t attrlen, bitmap[3] = {0}; 4362 int status; 4363 4364 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) 4365 goto xdr_error; 4366 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) 4367 goto xdr_error; 4368 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) 4369 goto xdr_error; 4370 4371 if ((status = decode_attr_maxlink(xdr, bitmap, &pathconf->max_link)) != 0) 4372 goto xdr_error; 4373 if ((status = decode_attr_maxname(xdr, bitmap, &pathconf->max_namelen)) != 0) 4374 goto xdr_error; 4375 4376 status = verify_attr_len(xdr, savep, attrlen); 4377xdr_error: 4378 dprintk("%s: xdr returned %d!\n", __func__, -status); 4379 return status; 4380} 4381 4382static int decode_threshold_hint(struct xdr_stream *xdr, 4383 uint32_t *bitmap, 4384 uint64_t *res, 4385 uint32_t hint_bit) 4386{ 4387 __be32 *p; 4388 4389 *res = 0; 4390 if (likely(bitmap[0] & hint_bit)) { 4391 p = xdr_inline_decode(xdr, 8); 4392 if (unlikely(!p)) 4393 goto out_overflow; 4394 xdr_decode_hyper(p, res); 4395 } 4396 return 0; 4397out_overflow: 4398 print_overflow_msg(__func__, xdr); 4399 return -EIO; 4400} 4401 4402static int decode_first_threshold_item4(struct xdr_stream *xdr, 4403 struct nfs4_threshold *res) 4404{ 4405 __be32 *p; 4406 unsigned int savep; 4407 uint32_t bitmap[3] = {0,}, attrlen; 4408 int status; 4409 4410 /* layout type */ 4411 p = xdr_inline_decode(xdr, 4); 4412 if (unlikely(!p)) { 4413 print_overflow_msg(__func__, xdr); 4414 return -EIO; 4415 } 4416 res->l_type = be32_to_cpup(p); 4417 4418 /* thi_hintset bitmap */ 4419 status = decode_attr_bitmap(xdr, bitmap); 4420 if (status < 0) 4421 goto xdr_error; 4422 4423 /* thi_hintlist length */ 4424 status = decode_attr_length(xdr, &attrlen, &savep); 4425 if (status < 0) 4426 goto xdr_error; 4427 /* thi_hintlist */ 4428 status = decode_threshold_hint(xdr, bitmap, &res->rd_sz, THRESHOLD_RD); 4429 if (status < 0) 4430 goto xdr_error; 4431 status = decode_threshold_hint(xdr, bitmap, &res->wr_sz, THRESHOLD_WR); 4432 if (status < 0) 4433 goto xdr_error; 4434 status = decode_threshold_hint(xdr, bitmap, &res->rd_io_sz, 4435 THRESHOLD_RD_IO); 4436 if (status < 0) 4437 goto xdr_error; 4438 status = decode_threshold_hint(xdr, bitmap, &res->wr_io_sz, 4439 THRESHOLD_WR_IO); 4440 if (status < 0) 4441 goto xdr_error; 4442 4443 status = verify_attr_len(xdr, savep, attrlen); 4444 res->bm = bitmap[0]; 4445 4446 dprintk("%s bm=0x%x rd_sz=%llu wr_sz=%llu rd_io=%llu wr_io=%llu\n", 4447 __func__, res->bm, res->rd_sz, res->wr_sz, res->rd_io_sz, 4448 res->wr_io_sz); 4449xdr_error: 4450 dprintk("%s ret=%d!\n", __func__, status); 4451 return status; 4452} 4453 4454/* 4455 * Thresholds on pNFS direct I/O vrs MDS I/O 4456 */ 4457static int decode_attr_mdsthreshold(struct xdr_stream *xdr, 4458 uint32_t *bitmap, 4459 struct nfs4_threshold *res) 4460{ 4461 __be32 *p; 4462 int status = 0; 4463 uint32_t num; 4464 4465 if (unlikely(bitmap[2] & (FATTR4_WORD2_MDSTHRESHOLD - 1U))) 4466 return -EIO; 4467 if (bitmap[2] & FATTR4_WORD2_MDSTHRESHOLD) { 4468 /* Did the server return an unrequested attribute? */ 4469 if (unlikely(res == NULL)) 4470 return -EREMOTEIO; 4471 p = xdr_inline_decode(xdr, 4); 4472 if (unlikely(!p)) 4473 goto out_overflow; 4474 num = be32_to_cpup(p); 4475 if (num == 0) 4476 return 0; 4477 if (num > 1) 4478 printk(KERN_INFO "%s: Warning: Multiple pNFS layout " 4479 "drivers per filesystem not supported\n", 4480 __func__); 4481 4482 status = decode_first_threshold_item4(xdr, res); 4483 bitmap[2] &= ~FATTR4_WORD2_MDSTHRESHOLD; 4484 } 4485 return status; 4486out_overflow: 4487 print_overflow_msg(__func__, xdr); 4488 return -EIO; 4489} 4490 4491static int decode_getfattr_attrs(struct xdr_stream *xdr, uint32_t *bitmap, 4492 struct nfs_fattr *fattr, struct nfs_fh *fh, 4493 struct nfs4_fs_locations *fs_loc, struct nfs4_label *label, 4494 const struct nfs_server *server) 4495{ 4496 int status; 4497 umode_t fmode = 0; 4498 uint32_t type; 4499 int32_t err; 4500 4501 status = decode_attr_type(xdr, bitmap, &type); 4502 if (status < 0) 4503 goto xdr_error; 4504 fattr->mode = 0; 4505 if (status != 0) { 4506 fattr->mode |= nfs_type2fmt[type]; 4507 fattr->valid |= status; 4508 } 4509 4510 status = decode_attr_change(xdr, bitmap, &fattr->change_attr); 4511 if (status < 0) 4512 goto xdr_error; 4513 fattr->valid |= status; 4514 4515 status = decode_attr_size(xdr, bitmap, &fattr->size); 4516 if (status < 0) 4517 goto xdr_error; 4518 fattr->valid |= status; 4519 4520 status = decode_attr_fsid(xdr, bitmap, &fattr->fsid); 4521 if (status < 0) 4522 goto xdr_error; 4523 fattr->valid |= status; 4524 4525 err = 0; 4526 status = decode_attr_error(xdr, bitmap, &err); 4527 if (status < 0) 4528 goto xdr_error; 4529 4530 status = decode_attr_filehandle(xdr, bitmap, fh); 4531 if (status < 0) 4532 goto xdr_error; 4533 4534 status = decode_attr_fileid(xdr, bitmap, &fattr->fileid); 4535 if (status < 0) 4536 goto xdr_error; 4537 fattr->valid |= status; 4538 4539 status = decode_attr_fs_locations(xdr, bitmap, fs_loc); 4540 if (status < 0) 4541 goto xdr_error; 4542 fattr->valid |= status; 4543 4544 status = decode_attr_mode(xdr, bitmap, &fmode); 4545 if (status < 0) 4546 goto xdr_error; 4547 if (status != 0) { 4548 fattr->mode |= fmode; 4549 fattr->valid |= status; 4550 } 4551 4552 status = decode_attr_nlink(xdr, bitmap, &fattr->nlink); 4553 if (status < 0) 4554 goto xdr_error; 4555 fattr->valid |= status; 4556 4557 status = decode_attr_owner(xdr, bitmap, server, &fattr->uid, fattr->owner_name); 4558 if (status < 0) 4559 goto xdr_error; 4560 fattr->valid |= status; 4561 4562 status = decode_attr_group(xdr, bitmap, server, &fattr->gid, fattr->group_name); 4563 if (status < 0) 4564 goto xdr_error; 4565 fattr->valid |= status; 4566 4567 status = decode_attr_rdev(xdr, bitmap, &fattr->rdev); 4568 if (status < 0) 4569 goto xdr_error; 4570 fattr->valid |= status; 4571 4572 status = decode_attr_space_used(xdr, bitmap, &fattr->du.nfs3.used); 4573 if (status < 0) 4574 goto xdr_error; 4575 fattr->valid |= status; 4576 4577 status = decode_attr_time_access(xdr, bitmap, &fattr->atime); 4578 if (status < 0) 4579 goto xdr_error; 4580 fattr->valid |= status; 4581 4582 status = decode_attr_time_metadata(xdr, bitmap, &fattr->ctime); 4583 if (status < 0) 4584 goto xdr_error; 4585 fattr->valid |= status; 4586 4587 status = decode_attr_time_modify(xdr, bitmap, &fattr->mtime); 4588 if (status < 0) 4589 goto xdr_error; 4590 fattr->valid |= status; 4591 4592 status = decode_attr_mounted_on_fileid(xdr, bitmap, &fattr->mounted_on_fileid); 4593 if (status < 0) 4594 goto xdr_error; 4595 fattr->valid |= status; 4596 4597 status = decode_attr_mdsthreshold(xdr, bitmap, fattr->mdsthreshold); 4598 if (status < 0) 4599 goto xdr_error; 4600 4601 if (label) { 4602 status = decode_attr_security_label(xdr, bitmap, label); 4603 if (status < 0) 4604 goto xdr_error; 4605 fattr->valid |= status; 4606 } 4607 4608xdr_error: 4609 dprintk("%s: xdr returned %d\n", __func__, -status); 4610 return status; 4611} 4612 4613static int decode_getfattr_generic(struct xdr_stream *xdr, struct nfs_fattr *fattr, 4614 struct nfs_fh *fh, struct nfs4_fs_locations *fs_loc, 4615 struct nfs4_label *label, const struct nfs_server *server) 4616{ 4617 unsigned int savep; 4618 uint32_t attrlen, 4619 bitmap[3] = {0}; 4620 int status; 4621 4622 status = decode_op_hdr(xdr, OP_GETATTR); 4623 if (status < 0) 4624 goto xdr_error; 4625 4626 status = decode_attr_bitmap(xdr, bitmap); 4627 if (status < 0) 4628 goto xdr_error; 4629 4630 status = decode_attr_length(xdr, &attrlen, &savep); 4631 if (status < 0) 4632 goto xdr_error; 4633 4634 status = decode_getfattr_attrs(xdr, bitmap, fattr, fh, fs_loc, 4635 label, server); 4636 if (status < 0) 4637 goto xdr_error; 4638 4639 status = verify_attr_len(xdr, savep, attrlen); 4640xdr_error: 4641 dprintk("%s: xdr returned %d\n", __func__, -status); 4642 return status; 4643} 4644 4645static int decode_getfattr_label(struct xdr_stream *xdr, struct nfs_fattr *fattr, 4646 struct nfs4_label *label, const struct nfs_server *server) 4647{ 4648 return decode_getfattr_generic(xdr, fattr, NULL, NULL, label, server); 4649} 4650 4651static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr, 4652 const struct nfs_server *server) 4653{ 4654 return decode_getfattr_generic(xdr, fattr, NULL, NULL, NULL, server); 4655} 4656 4657/* 4658 * Decode potentially multiple layout types. Currently we only support 4659 * one layout driver per file system. 4660 */ 4661static int decode_first_pnfs_layout_type(struct xdr_stream *xdr, 4662 uint32_t *layouttype) 4663{ 4664 __be32 *p; 4665 int num; 4666 4667 p = xdr_inline_decode(xdr, 4); 4668 if (unlikely(!p)) 4669 goto out_overflow; 4670 num = be32_to_cpup(p); 4671 4672 /* pNFS is not supported by the underlying file system */ 4673 if (num == 0) { 4674 *layouttype = 0; 4675 return 0; 4676 } 4677 if (num > 1) 4678 printk(KERN_INFO "NFS: %s: Warning: Multiple pNFS layout " 4679 "drivers per filesystem not supported\n", __func__); 4680 4681 /* Decode and set first layout type, move xdr->p past unused types */ 4682 p = xdr_inline_decode(xdr, num * 4); 4683 if (unlikely(!p)) 4684 goto out_overflow; 4685 *layouttype = be32_to_cpup(p); 4686 return 0; 4687out_overflow: 4688 print_overflow_msg(__func__, xdr); 4689 return -EIO; 4690} 4691 4692/* 4693 * The type of file system exported. 4694 * Note we must ensure that layouttype is set in any non-error case. 4695 */ 4696static int decode_attr_pnfstype(struct xdr_stream *xdr, uint32_t *bitmap, 4697 uint32_t *layouttype) 4698{ 4699 int status = 0; 4700 4701 dprintk("%s: bitmap is %x\n", __func__, bitmap[1]); 4702 if (unlikely(bitmap[1] & (FATTR4_WORD1_FS_LAYOUT_TYPES - 1U))) 4703 return -EIO; 4704 if (bitmap[1] & FATTR4_WORD1_FS_LAYOUT_TYPES) { 4705 status = decode_first_pnfs_layout_type(xdr, layouttype); 4706 bitmap[1] &= ~FATTR4_WORD1_FS_LAYOUT_TYPES; 4707 } else 4708 *layouttype = 0; 4709 return status; 4710} 4711 4712/* 4713 * The prefered block size for layout directed io 4714 */ 4715static int decode_attr_layout_blksize(struct xdr_stream *xdr, uint32_t *bitmap, 4716 uint32_t *res) 4717{ 4718 __be32 *p; 4719 4720 dprintk("%s: bitmap is %x\n", __func__, bitmap[2]); 4721 *res = 0; 4722 if (bitmap[2] & FATTR4_WORD2_LAYOUT_BLKSIZE) { 4723 p = xdr_inline_decode(xdr, 4); 4724 if (unlikely(!p)) { 4725 print_overflow_msg(__func__, xdr); 4726 return -EIO; 4727 } 4728 *res = be32_to_cpup(p); 4729 bitmap[2] &= ~FATTR4_WORD2_LAYOUT_BLKSIZE; 4730 } 4731 return 0; 4732} 4733 4734static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo) 4735{ 4736 unsigned int savep; 4737 uint32_t attrlen, bitmap[3]; 4738 int status; 4739 4740 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) 4741 goto xdr_error; 4742 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) 4743 goto xdr_error; 4744 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) 4745 goto xdr_error; 4746 4747 fsinfo->rtmult = fsinfo->wtmult = 512; /* ??? */ 4748 4749 if ((status = decode_attr_lease_time(xdr, bitmap, &fsinfo->lease_time)) != 0) 4750 goto xdr_error; 4751 if ((status = decode_attr_maxfilesize(xdr, bitmap, &fsinfo->maxfilesize)) != 0) 4752 goto xdr_error; 4753 if ((status = decode_attr_maxread(xdr, bitmap, &fsinfo->rtmax)) != 0) 4754 goto xdr_error; 4755 fsinfo->rtpref = fsinfo->dtpref = fsinfo->rtmax; 4756 if ((status = decode_attr_maxwrite(xdr, bitmap, &fsinfo->wtmax)) != 0) 4757 goto xdr_error; 4758 fsinfo->wtpref = fsinfo->wtmax; 4759 status = decode_attr_time_delta(xdr, bitmap, &fsinfo->time_delta); 4760 if (status != 0) 4761 goto xdr_error; 4762 status = decode_attr_pnfstype(xdr, bitmap, &fsinfo->layouttype); 4763 if (status != 0) 4764 goto xdr_error; 4765 status = decode_attr_layout_blksize(xdr, bitmap, &fsinfo->blksize); 4766 if (status) 4767 goto xdr_error; 4768 4769 status = verify_attr_len(xdr, savep, attrlen); 4770xdr_error: 4771 dprintk("%s: xdr returned %d!\n", __func__, -status); 4772 return status; 4773} 4774 4775static int decode_getfh(struct xdr_stream *xdr, struct nfs_fh *fh) 4776{ 4777 __be32 *p; 4778 uint32_t len; 4779 int status; 4780 4781 /* Zero handle first to allow comparisons */ 4782 memset(fh, 0, sizeof(*fh)); 4783 4784 status = decode_op_hdr(xdr, OP_GETFH); 4785 if (status) 4786 return status; 4787 4788 p = xdr_inline_decode(xdr, 4); 4789 if (unlikely(!p)) 4790 goto out_overflow; 4791 len = be32_to_cpup(p); 4792 if (len > NFS4_FHSIZE) 4793 return -EIO; 4794 fh->size = len; 4795 p = xdr_inline_decode(xdr, len); 4796 if (unlikely(!p)) 4797 goto out_overflow; 4798 memcpy(fh->data, p, len); 4799 return 0; 4800out_overflow: 4801 print_overflow_msg(__func__, xdr); 4802 return -EIO; 4803} 4804 4805static int decode_link(struct xdr_stream *xdr, struct nfs4_change_info *cinfo) 4806{ 4807 int status; 4808 4809 status = decode_op_hdr(xdr, OP_LINK); 4810 if (status) 4811 return status; 4812 return decode_change_info(xdr, cinfo); 4813} 4814 4815/* 4816 * We create the owner, so we know a proper owner.id length is 4. 4817 */ 4818static int decode_lock_denied (struct xdr_stream *xdr, struct file_lock *fl) 4819{ 4820 uint64_t offset, length, clientid; 4821 __be32 *p; 4822 uint32_t namelen, type; 4823 4824 p = xdr_inline_decode(xdr, 32); /* read 32 bytes */ 4825 if (unlikely(!p)) 4826 goto out_overflow; 4827 p = xdr_decode_hyper(p, &offset); /* read 2 8-byte long words */ 4828 p = xdr_decode_hyper(p, &length); 4829 type = be32_to_cpup(p++); /* 4 byte read */ 4830 if (fl != NULL) { /* manipulate file lock */ 4831 fl->fl_start = (loff_t)offset; 4832 fl->fl_end = fl->fl_start + (loff_t)length - 1; 4833 if (length == ~(uint64_t)0) 4834 fl->fl_end = OFFSET_MAX; 4835 fl->fl_type = F_WRLCK; 4836 if (type & 1) 4837 fl->fl_type = F_RDLCK; 4838 fl->fl_pid = 0; 4839 } 4840 p = xdr_decode_hyper(p, &clientid); /* read 8 bytes */ 4841 namelen = be32_to_cpup(p); /* read 4 bytes */ /* have read all 32 bytes now */ 4842 p = xdr_inline_decode(xdr, namelen); /* variable size field */ 4843 if (likely(p)) 4844 return -NFS4ERR_DENIED; 4845out_overflow: 4846 print_overflow_msg(__func__, xdr); 4847 return -EIO; 4848} 4849 4850static int decode_lock(struct xdr_stream *xdr, struct nfs_lock_res *res) 4851{ 4852 int status; 4853 4854 status = decode_op_hdr(xdr, OP_LOCK); 4855 if (status == -EIO) 4856 goto out; 4857 if (status == 0) { 4858 status = decode_stateid(xdr, &res->stateid); 4859 if (unlikely(status)) 4860 goto out; 4861 } else if (status == -NFS4ERR_DENIED) 4862 status = decode_lock_denied(xdr, NULL); 4863 if (res->open_seqid != NULL) 4864 nfs_increment_open_seqid(status, res->open_seqid); 4865 nfs_increment_lock_seqid(status, res->lock_seqid); 4866out: 4867 return status; 4868} 4869 4870static int decode_lockt(struct xdr_stream *xdr, struct nfs_lockt_res *res) 4871{ 4872 int status; 4873 status = decode_op_hdr(xdr, OP_LOCKT); 4874 if (status == -NFS4ERR_DENIED) 4875 return decode_lock_denied(xdr, res->denied); 4876 return status; 4877} 4878 4879static int decode_locku(struct xdr_stream *xdr, struct nfs_locku_res *res) 4880{ 4881 int status; 4882 4883 status = decode_op_hdr(xdr, OP_LOCKU); 4884 if (status != -EIO) 4885 nfs_increment_lock_seqid(status, res->seqid); 4886 if (status == 0) 4887 status = decode_stateid(xdr, &res->stateid); 4888 return status; 4889} 4890 4891static int decode_release_lockowner(struct xdr_stream *xdr) 4892{ 4893 return decode_op_hdr(xdr, OP_RELEASE_LOCKOWNER); 4894} 4895 4896static int decode_lookup(struct xdr_stream *xdr) 4897{ 4898 return decode_op_hdr(xdr, OP_LOOKUP); 4899} 4900 4901/* This is too sick! */ 4902static int decode_space_limit(struct xdr_stream *xdr, u64 *maxsize) 4903{ 4904 __be32 *p; 4905 uint32_t limit_type, nblocks, blocksize; 4906 4907 p = xdr_inline_decode(xdr, 12); 4908 if (unlikely(!p)) 4909 goto out_overflow; 4910 limit_type = be32_to_cpup(p++); 4911 switch (limit_type) { 4912 case 1: 4913 xdr_decode_hyper(p, maxsize); 4914 break; 4915 case 2: 4916 nblocks = be32_to_cpup(p++); 4917 blocksize = be32_to_cpup(p); 4918 *maxsize = (uint64_t)nblocks * (uint64_t)blocksize; 4919 } 4920 return 0; 4921out_overflow: 4922 print_overflow_msg(__func__, xdr); 4923 return -EIO; 4924} 4925 4926static int decode_rw_delegation(struct xdr_stream *xdr, 4927 uint32_t delegation_type, 4928 struct nfs_openres *res) 4929{ 4930 __be32 *p; 4931 int status; 4932 4933 status = decode_stateid(xdr, &res->delegation); 4934 if (unlikely(status)) 4935 return status; 4936 p = xdr_inline_decode(xdr, 4); 4937 if (unlikely(!p)) 4938 goto out_overflow; 4939 res->do_recall = be32_to_cpup(p); 4940 4941 switch (delegation_type) { 4942 case NFS4_OPEN_DELEGATE_READ: 4943 res->delegation_type = FMODE_READ; 4944 break; 4945 case NFS4_OPEN_DELEGATE_WRITE: 4946 res->delegation_type = FMODE_WRITE|FMODE_READ; 4947 if (decode_space_limit(xdr, &res->maxsize) < 0) 4948 return -EIO; 4949 } 4950 return decode_ace(xdr, NULL, res->server->nfs_client); 4951out_overflow: 4952 print_overflow_msg(__func__, xdr); 4953 return -EIO; 4954} 4955 4956static int decode_no_delegation(struct xdr_stream *xdr, struct nfs_openres *res) 4957{ 4958 __be32 *p; 4959 uint32_t why_no_delegation; 4960 4961 p = xdr_inline_decode(xdr, 4); 4962 if (unlikely(!p)) 4963 goto out_overflow; 4964 why_no_delegation = be32_to_cpup(p); 4965 switch (why_no_delegation) { 4966 case WND4_CONTENTION: 4967 case WND4_RESOURCE: 4968 xdr_inline_decode(xdr, 4); 4969 /* Ignore for now */ 4970 } 4971 return 0; 4972out_overflow: 4973 print_overflow_msg(__func__, xdr); 4974 return -EIO; 4975} 4976 4977static int decode_delegation(struct xdr_stream *xdr, struct nfs_openres *res) 4978{ 4979 __be32 *p; 4980 uint32_t delegation_type; 4981 4982 p = xdr_inline_decode(xdr, 4); 4983 if (unlikely(!p)) 4984 goto out_overflow; 4985 delegation_type = be32_to_cpup(p); 4986 res->delegation_type = 0; 4987 switch (delegation_type) { 4988 case NFS4_OPEN_DELEGATE_NONE: 4989 return 0; 4990 case NFS4_OPEN_DELEGATE_READ: 4991 case NFS4_OPEN_DELEGATE_WRITE: 4992 return decode_rw_delegation(xdr, delegation_type, res); 4993 case NFS4_OPEN_DELEGATE_NONE_EXT: 4994 return decode_no_delegation(xdr, res); 4995 } 4996 return -EIO; 4997out_overflow: 4998 print_overflow_msg(__func__, xdr); 4999 return -EIO; 5000} 5001 5002static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res) 5003{ 5004 __be32 *p; 5005 uint32_t savewords, bmlen, i; 5006 int status; 5007 5008 if (!__decode_op_hdr(xdr, OP_OPEN, &status)) 5009 return status; 5010 nfs_increment_open_seqid(status, res->seqid); 5011 if (status) 5012 return status; 5013 status = decode_stateid(xdr, &res->stateid); 5014 if (unlikely(status)) 5015 return status; 5016 5017 decode_change_info(xdr, &res->cinfo); 5018 5019 p = xdr_inline_decode(xdr, 8); 5020 if (unlikely(!p)) 5021 goto out_overflow; 5022 res->rflags = be32_to_cpup(p++); 5023 bmlen = be32_to_cpup(p); 5024 if (bmlen > 10) 5025 goto xdr_error; 5026 5027 p = xdr_inline_decode(xdr, bmlen << 2); 5028 if (unlikely(!p)) 5029 goto out_overflow; 5030 savewords = min_t(uint32_t, bmlen, NFS4_BITMAP_SIZE); 5031 for (i = 0; i < savewords; ++i) 5032 res->attrset[i] = be32_to_cpup(p++); 5033 for (; i < NFS4_BITMAP_SIZE; i++) 5034 res->attrset[i] = 0; 5035 5036 return decode_delegation(xdr, res); 5037xdr_error: 5038 dprintk("%s: Bitmap too large! Length = %u\n", __func__, bmlen); 5039 return -EIO; 5040out_overflow: 5041 print_overflow_msg(__func__, xdr); 5042 return -EIO; 5043} 5044 5045static int decode_open_confirm(struct xdr_stream *xdr, struct nfs_open_confirmres *res) 5046{ 5047 int status; 5048 5049 status = decode_op_hdr(xdr, OP_OPEN_CONFIRM); 5050 if (status != -EIO) 5051 nfs_increment_open_seqid(status, res->seqid); 5052 if (!status) 5053 status = decode_stateid(xdr, &res->stateid); 5054 return status; 5055} 5056 5057static int decode_open_downgrade(struct xdr_stream *xdr, struct nfs_closeres *res) 5058{ 5059 int status; 5060 5061 status = decode_op_hdr(xdr, OP_OPEN_DOWNGRADE); 5062 if (status != -EIO) 5063 nfs_increment_open_seqid(status, res->seqid); 5064 if (!status) 5065 status = decode_stateid(xdr, &res->stateid); 5066 return status; 5067} 5068 5069static int decode_putfh(struct xdr_stream *xdr) 5070{ 5071 return decode_op_hdr(xdr, OP_PUTFH); 5072} 5073 5074static int decode_putrootfh(struct xdr_stream *xdr) 5075{ 5076 return decode_op_hdr(xdr, OP_PUTROOTFH); 5077} 5078 5079static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req, 5080 struct nfs_pgio_res *res) 5081{ 5082 __be32 *p; 5083 uint32_t count, eof, recvd; 5084 int status; 5085 5086 status = decode_op_hdr(xdr, OP_READ); 5087 if (status) 5088 return status; 5089 p = xdr_inline_decode(xdr, 8); 5090 if (unlikely(!p)) 5091 goto out_overflow; 5092 eof = be32_to_cpup(p++); 5093 count = be32_to_cpup(p); 5094 recvd = xdr_read_pages(xdr, count); 5095 if (count > recvd) { 5096 dprintk("NFS: server cheating in read reply: " 5097 "count %u > recvd %u\n", count, recvd); 5098 count = recvd; 5099 eof = 0; 5100 } 5101 res->eof = eof; 5102 res->count = count; 5103 return 0; 5104out_overflow: 5105 print_overflow_msg(__func__, xdr); 5106 return -EIO; 5107} 5108 5109static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs4_readdir_res *readdir) 5110{ 5111 int status; 5112 __be32 verf[2]; 5113 5114 status = decode_op_hdr(xdr, OP_READDIR); 5115 if (!status) 5116 status = decode_verifier(xdr, readdir->verifier.data); 5117 if (unlikely(status)) 5118 return status; 5119 memcpy(verf, readdir->verifier.data, sizeof(verf)); 5120 dprintk("%s: verifier = %08x:%08x\n", 5121 __func__, verf[0], verf[1]); 5122 return xdr_read_pages(xdr, xdr->buf->page_len); 5123} 5124 5125static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req) 5126{ 5127 struct xdr_buf *rcvbuf = &req->rq_rcv_buf; 5128 u32 len, recvd; 5129 __be32 *p; 5130 int status; 5131 5132 status = decode_op_hdr(xdr, OP_READLINK); 5133 if (status) 5134 return status; 5135 5136 /* Convert length of symlink */ 5137 p = xdr_inline_decode(xdr, 4); 5138 if (unlikely(!p)) 5139 goto out_overflow; 5140 len = be32_to_cpup(p); 5141 if (len >= rcvbuf->page_len || len <= 0) { 5142 dprintk("nfs: server returned giant symlink!\n"); 5143 return -ENAMETOOLONG; 5144 } 5145 recvd = xdr_read_pages(xdr, len); 5146 if (recvd < len) { 5147 dprintk("NFS: server cheating in readlink reply: " 5148 "count %u > recvd %u\n", len, recvd); 5149 return -EIO; 5150 } 5151 /* 5152 * The XDR encode routine has set things up so that 5153 * the link text will be copied directly into the 5154 * buffer. We just have to do overflow-checking, 5155 * and and null-terminate the text (the VFS expects 5156 * null-termination). 5157 */ 5158 xdr_terminate_string(rcvbuf, len); 5159 return 0; 5160out_overflow: 5161 print_overflow_msg(__func__, xdr); 5162 return -EIO; 5163} 5164 5165static int decode_remove(struct xdr_stream *xdr, struct nfs4_change_info *cinfo) 5166{ 5167 int status; 5168 5169 status = decode_op_hdr(xdr, OP_REMOVE); 5170 if (status) 5171 goto out; 5172 status = decode_change_info(xdr, cinfo); 5173out: 5174 return status; 5175} 5176 5177static int decode_rename(struct xdr_stream *xdr, struct nfs4_change_info *old_cinfo, 5178 struct nfs4_change_info *new_cinfo) 5179{ 5180 int status; 5181 5182 status = decode_op_hdr(xdr, OP_RENAME); 5183 if (status) 5184 goto out; 5185 if ((status = decode_change_info(xdr, old_cinfo))) 5186 goto out; 5187 status = decode_change_info(xdr, new_cinfo); 5188out: 5189 return status; 5190} 5191 5192static int decode_renew(struct xdr_stream *xdr) 5193{ 5194 return decode_op_hdr(xdr, OP_RENEW); 5195} 5196 5197static int 5198decode_restorefh(struct xdr_stream *xdr) 5199{ 5200 return decode_op_hdr(xdr, OP_RESTOREFH); 5201} 5202 5203static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req, 5204 struct nfs_getaclres *res) 5205{ 5206 unsigned int savep; 5207 uint32_t attrlen, 5208 bitmap[3] = {0}; 5209 int status; 5210 unsigned int pg_offset; 5211 5212 res->acl_len = 0; 5213 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) 5214 goto out; 5215 5216 xdr_enter_page(xdr, xdr->buf->page_len); 5217 5218 /* Calculate the offset of the page data */ 5219 pg_offset = xdr->buf->head[0].iov_len; 5220 5221 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) 5222 goto out; 5223 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) 5224 goto out; 5225 5226 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACL - 1U))) 5227 return -EIO; 5228 if (likely(bitmap[0] & FATTR4_WORD0_ACL)) { 5229 5230 /* The bitmap (xdr len + bitmaps) and the attr xdr len words 5231 * are stored with the acl data to handle the problem of 5232 * variable length bitmaps.*/ 5233 res->acl_data_offset = xdr_stream_pos(xdr) - pg_offset; 5234 res->acl_len = attrlen; 5235 5236 /* Check for receive buffer overflow */ 5237 if (res->acl_len > (xdr->nwords << 2) || 5238 res->acl_len + res->acl_data_offset > xdr->buf->page_len) { 5239 res->acl_flags |= NFS4_ACL_TRUNC; 5240 dprintk("NFS: acl reply: attrlen %u > page_len %u\n", 5241 attrlen, xdr->nwords << 2); 5242 } 5243 } else 5244 status = -EOPNOTSUPP; 5245 5246out: 5247 return status; 5248} 5249 5250static int 5251decode_savefh(struct xdr_stream *xdr) 5252{ 5253 return decode_op_hdr(xdr, OP_SAVEFH); 5254} 5255 5256static int decode_setattr(struct xdr_stream *xdr) 5257{ 5258 __be32 *p; 5259 uint32_t bmlen; 5260 int status; 5261 5262 status = decode_op_hdr(xdr, OP_SETATTR); 5263 if (status) 5264 return status; 5265 p = xdr_inline_decode(xdr, 4); 5266 if (unlikely(!p)) 5267 goto out_overflow; 5268 bmlen = be32_to_cpup(p); 5269 p = xdr_inline_decode(xdr, bmlen << 2); 5270 if (likely(p)) 5271 return 0; 5272out_overflow: 5273 print_overflow_msg(__func__, xdr); 5274 return -EIO; 5275} 5276 5277static int decode_setclientid(struct xdr_stream *xdr, struct nfs4_setclientid_res *res) 5278{ 5279 __be32 *p; 5280 uint32_t opnum; 5281 int32_t nfserr; 5282 5283 p = xdr_inline_decode(xdr, 8); 5284 if (unlikely(!p)) 5285 goto out_overflow; 5286 opnum = be32_to_cpup(p++); 5287 if (opnum != OP_SETCLIENTID) { 5288 dprintk("nfs: decode_setclientid: Server returned operation" 5289 " %d\n", opnum); 5290 return -EIO; 5291 } 5292 nfserr = be32_to_cpup(p); 5293 if (nfserr == NFS_OK) { 5294 p = xdr_inline_decode(xdr, 8 + NFS4_VERIFIER_SIZE); 5295 if (unlikely(!p)) 5296 goto out_overflow; 5297 p = xdr_decode_hyper(p, &res->clientid); 5298 memcpy(res->confirm.data, p, NFS4_VERIFIER_SIZE); 5299 } else if (nfserr == NFSERR_CLID_INUSE) { 5300 uint32_t len; 5301 5302 /* skip netid string */ 5303 p = xdr_inline_decode(xdr, 4); 5304 if (unlikely(!p)) 5305 goto out_overflow; 5306 len = be32_to_cpup(p); 5307 p = xdr_inline_decode(xdr, len); 5308 if (unlikely(!p)) 5309 goto out_overflow; 5310 5311 /* skip uaddr string */ 5312 p = xdr_inline_decode(xdr, 4); 5313 if (unlikely(!p)) 5314 goto out_overflow; 5315 len = be32_to_cpup(p); 5316 p = xdr_inline_decode(xdr, len); 5317 if (unlikely(!p)) 5318 goto out_overflow; 5319 return -NFSERR_CLID_INUSE; 5320 } else 5321 return nfs4_stat_to_errno(nfserr); 5322 5323 return 0; 5324out_overflow: 5325 print_overflow_msg(__func__, xdr); 5326 return -EIO; 5327} 5328 5329static int decode_setclientid_confirm(struct xdr_stream *xdr) 5330{ 5331 return decode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM); 5332} 5333 5334static int decode_write(struct xdr_stream *xdr, struct nfs_pgio_res *res) 5335{ 5336 __be32 *p; 5337 int status; 5338 5339 status = decode_op_hdr(xdr, OP_WRITE); 5340 if (status) 5341 return status; 5342 5343 p = xdr_inline_decode(xdr, 8); 5344 if (unlikely(!p)) 5345 goto out_overflow; 5346 res->count = be32_to_cpup(p++); 5347 res->verf->committed = be32_to_cpup(p++); 5348 return decode_write_verifier(xdr, &res->verf->verifier); 5349out_overflow: 5350 print_overflow_msg(__func__, xdr); 5351 return -EIO; 5352} 5353 5354static int decode_delegreturn(struct xdr_stream *xdr) 5355{ 5356 return decode_op_hdr(xdr, OP_DELEGRETURN); 5357} 5358 5359static int decode_secinfo_gss(struct xdr_stream *xdr, 5360 struct nfs4_secinfo4 *flavor) 5361{ 5362 u32 oid_len; 5363 __be32 *p; 5364 5365 p = xdr_inline_decode(xdr, 4); 5366 if (unlikely(!p)) 5367 goto out_overflow; 5368 oid_len = be32_to_cpup(p); 5369 if (oid_len > GSS_OID_MAX_LEN) 5370 goto out_err; 5371 5372 p = xdr_inline_decode(xdr, oid_len); 5373 if (unlikely(!p)) 5374 goto out_overflow; 5375 memcpy(flavor->flavor_info.oid.data, p, oid_len); 5376 flavor->flavor_info.oid.len = oid_len; 5377 5378 p = xdr_inline_decode(xdr, 8); 5379 if (unlikely(!p)) 5380 goto out_overflow; 5381 flavor->flavor_info.qop = be32_to_cpup(p++); 5382 flavor->flavor_info.service = be32_to_cpup(p); 5383 5384 return 0; 5385 5386out_overflow: 5387 print_overflow_msg(__func__, xdr); 5388 return -EIO; 5389out_err: 5390 return -EINVAL; 5391} 5392 5393static int decode_secinfo_common(struct xdr_stream *xdr, struct nfs4_secinfo_res *res) 5394{ 5395 struct nfs4_secinfo4 *sec_flavor; 5396 unsigned int i, num_flavors; 5397 int status; 5398 __be32 *p; 5399 5400 p = xdr_inline_decode(xdr, 4); 5401 if (unlikely(!p)) 5402 goto out_overflow; 5403 5404 res->flavors->num_flavors = 0; 5405 num_flavors = be32_to_cpup(p); 5406 5407 for (i = 0; i < num_flavors; i++) { 5408 sec_flavor = &res->flavors->flavors[i]; 5409 if ((char *)&sec_flavor[1] - (char *)res->flavors > PAGE_SIZE) 5410 break; 5411 5412 p = xdr_inline_decode(xdr, 4); 5413 if (unlikely(!p)) 5414 goto out_overflow; 5415 sec_flavor->flavor = be32_to_cpup(p); 5416 5417 if (sec_flavor->flavor == RPC_AUTH_GSS) { 5418 status = decode_secinfo_gss(xdr, sec_flavor); 5419 if (status) 5420 goto out; 5421 } 5422 res->flavors->num_flavors++; 5423 } 5424 5425 status = 0; 5426out: 5427 return status; 5428out_overflow: 5429 print_overflow_msg(__func__, xdr); 5430 return -EIO; 5431} 5432 5433static int decode_secinfo(struct xdr_stream *xdr, struct nfs4_secinfo_res *res) 5434{ 5435 int status = decode_op_hdr(xdr, OP_SECINFO); 5436 if (status) 5437 return status; 5438 return decode_secinfo_common(xdr, res); 5439} 5440 5441#if defined(CONFIG_NFS_V4_1) 5442static int decode_secinfo_no_name(struct xdr_stream *xdr, struct nfs4_secinfo_res *res) 5443{ 5444 int status = decode_op_hdr(xdr, OP_SECINFO_NO_NAME); 5445 if (status) 5446 return status; 5447 return decode_secinfo_common(xdr, res); 5448} 5449 5450static int decode_op_map(struct xdr_stream *xdr, struct nfs4_op_map *op_map) 5451{ 5452 __be32 *p; 5453 uint32_t bitmap_words; 5454 unsigned int i; 5455 5456 p = xdr_inline_decode(xdr, 4); 5457 bitmap_words = be32_to_cpup(p++); 5458 if (bitmap_words > NFS4_OP_MAP_NUM_WORDS) 5459 return -EIO; 5460 p = xdr_inline_decode(xdr, 4 * bitmap_words); 5461 for (i = 0; i < bitmap_words; i++) 5462 op_map->u.words[i] = be32_to_cpup(p++); 5463 5464 return 0; 5465} 5466 5467static int decode_exchange_id(struct xdr_stream *xdr, 5468 struct nfs41_exchange_id_res *res) 5469{ 5470 __be32 *p; 5471 uint32_t dummy; 5472 char *dummy_str; 5473 int status; 5474 uint32_t impl_id_count; 5475 5476 status = decode_op_hdr(xdr, OP_EXCHANGE_ID); 5477 if (status) 5478 return status; 5479 5480 p = xdr_inline_decode(xdr, 8); 5481 if (unlikely(!p)) 5482 goto out_overflow; 5483 xdr_decode_hyper(p, &res->clientid); 5484 p = xdr_inline_decode(xdr, 12); 5485 if (unlikely(!p)) 5486 goto out_overflow; 5487 res->seqid = be32_to_cpup(p++); 5488 res->flags = be32_to_cpup(p++); 5489 5490 res->state_protect.how = be32_to_cpup(p); 5491 switch (res->state_protect.how) { 5492 case SP4_NONE: 5493 break; 5494 case SP4_MACH_CRED: 5495 status = decode_op_map(xdr, &res->state_protect.enforce); 5496 if (status) 5497 return status; 5498 status = decode_op_map(xdr, &res->state_protect.allow); 5499 if (status) 5500 return status; 5501 break; 5502 default: 5503 WARN_ON_ONCE(1); 5504 return -EIO; 5505 } 5506 5507 /* server_owner4.so_minor_id */ 5508 p = xdr_inline_decode(xdr, 8); 5509 if (unlikely(!p)) 5510 goto out_overflow; 5511 p = xdr_decode_hyper(p, &res->server_owner->minor_id); 5512 5513 /* server_owner4.so_major_id */ 5514 status = decode_opaque_inline(xdr, &dummy, &dummy_str); 5515 if (unlikely(status)) 5516 return status; 5517 if (unlikely(dummy > NFS4_OPAQUE_LIMIT)) 5518 return -EIO; 5519 memcpy(res->server_owner->major_id, dummy_str, dummy); 5520 res->server_owner->major_id_sz = dummy; 5521 5522 /* server_scope4 */ 5523 status = decode_opaque_inline(xdr, &dummy, &dummy_str); 5524 if (unlikely(status)) 5525 return status; 5526 if (unlikely(dummy > NFS4_OPAQUE_LIMIT)) 5527 return -EIO; 5528 memcpy(res->server_scope->server_scope, dummy_str, dummy); 5529 res->server_scope->server_scope_sz = dummy; 5530 5531 /* Implementation Id */ 5532 p = xdr_inline_decode(xdr, 4); 5533 if (unlikely(!p)) 5534 goto out_overflow; 5535 impl_id_count = be32_to_cpup(p++); 5536 5537 if (impl_id_count) { 5538 /* nii_domain */ 5539 status = decode_opaque_inline(xdr, &dummy, &dummy_str); 5540 if (unlikely(status)) 5541 return status; 5542 if (unlikely(dummy > NFS4_OPAQUE_LIMIT)) 5543 return -EIO; 5544 memcpy(res->impl_id->domain, dummy_str, dummy); 5545 5546 /* nii_name */ 5547 status = decode_opaque_inline(xdr, &dummy, &dummy_str); 5548 if (unlikely(status)) 5549 return status; 5550 if (unlikely(dummy > NFS4_OPAQUE_LIMIT)) 5551 return -EIO; 5552 memcpy(res->impl_id->name, dummy_str, dummy); 5553 5554 /* nii_date */ 5555 p = xdr_inline_decode(xdr, 12); 5556 if (unlikely(!p)) 5557 goto out_overflow; 5558 p = xdr_decode_hyper(p, &res->impl_id->date.seconds); 5559 res->impl_id->date.nseconds = be32_to_cpup(p); 5560 5561 /* if there's more than one entry, ignore the rest */ 5562 } 5563 return 0; 5564out_overflow: 5565 print_overflow_msg(__func__, xdr); 5566 return -EIO; 5567} 5568 5569static int decode_chan_attrs(struct xdr_stream *xdr, 5570 struct nfs4_channel_attrs *attrs) 5571{ 5572 __be32 *p; 5573 u32 nr_attrs, val; 5574 5575 p = xdr_inline_decode(xdr, 28); 5576 if (unlikely(!p)) 5577 goto out_overflow; 5578 val = be32_to_cpup(p++); /* headerpadsz */ 5579 if (val) 5580 return -EINVAL; /* no support for header padding yet */ 5581 attrs->max_rqst_sz = be32_to_cpup(p++); 5582 attrs->max_resp_sz = be32_to_cpup(p++); 5583 attrs->max_resp_sz_cached = be32_to_cpup(p++); 5584 attrs->max_ops = be32_to_cpup(p++); 5585 attrs->max_reqs = be32_to_cpup(p++); 5586 nr_attrs = be32_to_cpup(p); 5587 if (unlikely(nr_attrs > 1)) { 5588 printk(KERN_WARNING "NFS: %s: Invalid rdma channel attrs " 5589 "count %u\n", __func__, nr_attrs); 5590 return -EINVAL; 5591 } 5592 if (nr_attrs == 1) { 5593 p = xdr_inline_decode(xdr, 4); /* skip rdma_attrs */ 5594 if (unlikely(!p)) 5595 goto out_overflow; 5596 } 5597 return 0; 5598out_overflow: 5599 print_overflow_msg(__func__, xdr); 5600 return -EIO; 5601} 5602 5603static int decode_sessionid(struct xdr_stream *xdr, struct nfs4_sessionid *sid) 5604{ 5605 return decode_opaque_fixed(xdr, sid->data, NFS4_MAX_SESSIONID_LEN); 5606} 5607 5608static int decode_bind_conn_to_session(struct xdr_stream *xdr, 5609 struct nfs41_bind_conn_to_session_res *res) 5610{ 5611 __be32 *p; 5612 int status; 5613 5614 status = decode_op_hdr(xdr, OP_BIND_CONN_TO_SESSION); 5615 if (!status) 5616 status = decode_sessionid(xdr, &res->sessionid); 5617 if (unlikely(status)) 5618 return status; 5619 5620 /* dir flags, rdma mode bool */ 5621 p = xdr_inline_decode(xdr, 8); 5622 if (unlikely(!p)) 5623 goto out_overflow; 5624 5625 res->dir = be32_to_cpup(p++); 5626 if (res->dir == 0 || res->dir > NFS4_CDFS4_BOTH) 5627 return -EIO; 5628 if (be32_to_cpup(p) == 0) 5629 res->use_conn_in_rdma_mode = false; 5630 else 5631 res->use_conn_in_rdma_mode = true; 5632 5633 return 0; 5634out_overflow: 5635 print_overflow_msg(__func__, xdr); 5636 return -EIO; 5637} 5638 5639static int decode_create_session(struct xdr_stream *xdr, 5640 struct nfs41_create_session_res *res) 5641{ 5642 __be32 *p; 5643 int status; 5644 5645 status = decode_op_hdr(xdr, OP_CREATE_SESSION); 5646 if (!status) 5647 status = decode_sessionid(xdr, &res->sessionid); 5648 if (unlikely(status)) 5649 return status; 5650 5651 /* seqid, flags */ 5652 p = xdr_inline_decode(xdr, 8); 5653 if (unlikely(!p)) 5654 goto out_overflow; 5655 res->seqid = be32_to_cpup(p++); 5656 res->flags = be32_to_cpup(p); 5657 5658 /* Channel attributes */ 5659 status = decode_chan_attrs(xdr, &res->fc_attrs); 5660 if (!status) 5661 status = decode_chan_attrs(xdr, &res->bc_attrs); 5662 return status; 5663out_overflow: 5664 print_overflow_msg(__func__, xdr); 5665 return -EIO; 5666} 5667 5668static int decode_destroy_session(struct xdr_stream *xdr, void *dummy) 5669{ 5670 return decode_op_hdr(xdr, OP_DESTROY_SESSION); 5671} 5672 5673static int decode_destroy_clientid(struct xdr_stream *xdr, void *dummy) 5674{ 5675 return decode_op_hdr(xdr, OP_DESTROY_CLIENTID); 5676} 5677 5678static int decode_reclaim_complete(struct xdr_stream *xdr, void *dummy) 5679{ 5680 return decode_op_hdr(xdr, OP_RECLAIM_COMPLETE); 5681} 5682#endif /* CONFIG_NFS_V4_1 */ 5683 5684static int decode_sequence(struct xdr_stream *xdr, 5685 struct nfs4_sequence_res *res, 5686 struct rpc_rqst *rqstp) 5687{ 5688#if defined(CONFIG_NFS_V4_1) 5689 struct nfs4_session *session; 5690 struct nfs4_sessionid id; 5691 u32 dummy; 5692 int status; 5693 __be32 *p; 5694 5695 if (res->sr_slot == NULL) 5696 return 0; 5697 if (!res->sr_slot->table->session) 5698 return 0; 5699 5700 status = decode_op_hdr(xdr, OP_SEQUENCE); 5701 if (!status) 5702 status = decode_sessionid(xdr, &id); 5703 if (unlikely(status)) 5704 goto out_err; 5705 5706 /* 5707 * If the server returns different values for sessionID, slotID or 5708 * sequence number, the server is looney tunes. 5709 */ 5710 status = -EREMOTEIO; 5711 session = res->sr_slot->table->session; 5712 5713 if (memcmp(id.data, session->sess_id.data, 5714 NFS4_MAX_SESSIONID_LEN)) { 5715 dprintk("%s Invalid session id\n", __func__); 5716 goto out_err; 5717 } 5718 5719 p = xdr_inline_decode(xdr, 20); 5720 if (unlikely(!p)) 5721 goto out_overflow; 5722 5723 /* seqid */ 5724 dummy = be32_to_cpup(p++); 5725 if (dummy != res->sr_slot->seq_nr) { 5726 dprintk("%s Invalid sequence number\n", __func__); 5727 goto out_err; 5728 } 5729 /* slot id */ 5730 dummy = be32_to_cpup(p++); 5731 if (dummy != res->sr_slot->slot_nr) { 5732 dprintk("%s Invalid slot id\n", __func__); 5733 goto out_err; 5734 } 5735 /* highest slot id */ 5736 res->sr_highest_slotid = be32_to_cpup(p++); 5737 /* target highest slot id */ 5738 res->sr_target_highest_slotid = be32_to_cpup(p++); 5739 /* result flags */ 5740 res->sr_status_flags = be32_to_cpup(p); 5741 status = 0; 5742out_err: 5743 res->sr_status = status; 5744 return status; 5745out_overflow: 5746 print_overflow_msg(__func__, xdr); 5747 status = -EIO; 5748 goto out_err; 5749#else /* CONFIG_NFS_V4_1 */ 5750 return 0; 5751#endif /* CONFIG_NFS_V4_1 */ 5752} 5753 5754#if defined(CONFIG_NFS_V4_1) 5755static int decode_getdeviceinfo(struct xdr_stream *xdr, 5756 struct nfs4_getdeviceinfo_res *res) 5757{ 5758 struct pnfs_device *pdev = res->pdev; 5759 __be32 *p; 5760 uint32_t len, type; 5761 int status; 5762 5763 status = decode_op_hdr(xdr, OP_GETDEVICEINFO); 5764 if (status) { 5765 if (status == -ETOOSMALL) { 5766 p = xdr_inline_decode(xdr, 4); 5767 if (unlikely(!p)) 5768 goto out_overflow; 5769 pdev->mincount = be32_to_cpup(p); 5770 dprintk("%s: Min count too small. mincnt = %u\n", 5771 __func__, pdev->mincount); 5772 } 5773 return status; 5774 } 5775 5776 p = xdr_inline_decode(xdr, 8); 5777 if (unlikely(!p)) 5778 goto out_overflow; 5779 type = be32_to_cpup(p++); 5780 if (type != pdev->layout_type) { 5781 dprintk("%s: layout mismatch req: %u pdev: %u\n", 5782 __func__, pdev->layout_type, type); 5783 return -EINVAL; 5784 } 5785 /* 5786 * Get the length of the opaque device_addr4. xdr_read_pages places 5787 * the opaque device_addr4 in the xdr_buf->pages (pnfs_device->pages) 5788 * and places the remaining xdr data in xdr_buf->tail 5789 */ 5790 pdev->mincount = be32_to_cpup(p); 5791 if (xdr_read_pages(xdr, pdev->mincount) != pdev->mincount) 5792 goto out_overflow; 5793 5794 /* Parse notification bitmap, verifying that it is zero. */ 5795 p = xdr_inline_decode(xdr, 4); 5796 if (unlikely(!p)) 5797 goto out_overflow; 5798 len = be32_to_cpup(p); 5799 if (len) { 5800 uint32_t i; 5801 5802 p = xdr_inline_decode(xdr, 4 * len); 5803 if (unlikely(!p)) 5804 goto out_overflow; 5805 5806 res->notification = be32_to_cpup(p++); 5807 for (i = 1; i < len; i++) { 5808 if (be32_to_cpup(p++)) { 5809 dprintk("%s: unsupported notification\n", 5810 __func__); 5811 return -EIO; 5812 } 5813 } 5814 } 5815 return 0; 5816out_overflow: 5817 print_overflow_msg(__func__, xdr); 5818 return -EIO; 5819} 5820 5821static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req, 5822 struct nfs4_layoutget_res *res) 5823{ 5824 __be32 *p; 5825 int status; 5826 u32 layout_count; 5827 u32 recvd; 5828 5829 status = decode_op_hdr(xdr, OP_LAYOUTGET); 5830 if (status) 5831 return status; 5832 p = xdr_inline_decode(xdr, 4); 5833 if (unlikely(!p)) 5834 goto out_overflow; 5835 res->return_on_close = be32_to_cpup(p); 5836 decode_stateid(xdr, &res->stateid); 5837 p = xdr_inline_decode(xdr, 4); 5838 if (unlikely(!p)) 5839 goto out_overflow; 5840 layout_count = be32_to_cpup(p); 5841 if (!layout_count) { 5842 dprintk("%s: server responded with empty layout array\n", 5843 __func__); 5844 return -EINVAL; 5845 } 5846 5847 p = xdr_inline_decode(xdr, 28); 5848 if (unlikely(!p)) 5849 goto out_overflow; 5850 p = xdr_decode_hyper(p, &res->range.offset); 5851 p = xdr_decode_hyper(p, &res->range.length); 5852 res->range.iomode = be32_to_cpup(p++); 5853 res->type = be32_to_cpup(p++); 5854 res->layoutp->len = be32_to_cpup(p); 5855 5856 dprintk("%s roff:%lu rlen:%lu riomode:%d, lo_type:0x%x, lo.len:%d\n", 5857 __func__, 5858 (unsigned long)res->range.offset, 5859 (unsigned long)res->range.length, 5860 res->range.iomode, 5861 res->type, 5862 res->layoutp->len); 5863 5864 recvd = xdr_read_pages(xdr, res->layoutp->len); 5865 if (res->layoutp->len > recvd) { 5866 dprintk("NFS: server cheating in layoutget reply: " 5867 "layout len %u > recvd %u\n", 5868 res->layoutp->len, recvd); 5869 return -EINVAL; 5870 } 5871 5872 if (layout_count > 1) { 5873 /* We only handle a length one array at the moment. Any 5874 * further entries are just ignored. Note that this means 5875 * the client may see a response that is less than the 5876 * minimum it requested. 5877 */ 5878 dprintk("%s: server responded with %d layouts, dropping tail\n", 5879 __func__, layout_count); 5880 } 5881 5882 return 0; 5883out_overflow: 5884 print_overflow_msg(__func__, xdr); 5885 return -EIO; 5886} 5887 5888static int decode_layoutreturn(struct xdr_stream *xdr, 5889 struct nfs4_layoutreturn_res *res) 5890{ 5891 __be32 *p; 5892 int status; 5893 5894 status = decode_op_hdr(xdr, OP_LAYOUTRETURN); 5895 if (status) 5896 return status; 5897 p = xdr_inline_decode(xdr, 4); 5898 if (unlikely(!p)) 5899 goto out_overflow; 5900 res->lrs_present = be32_to_cpup(p); 5901 if (res->lrs_present) 5902 status = decode_stateid(xdr, &res->stateid); 5903 return status; 5904out_overflow: 5905 print_overflow_msg(__func__, xdr); 5906 return -EIO; 5907} 5908 5909static int decode_layoutcommit(struct xdr_stream *xdr, 5910 struct rpc_rqst *req, 5911 struct nfs4_layoutcommit_res *res) 5912{ 5913 __be32 *p; 5914 __u32 sizechanged; 5915 int status; 5916 5917 status = decode_op_hdr(xdr, OP_LAYOUTCOMMIT); 5918 res->status = status; 5919 if (status) 5920 return status; 5921 5922 p = xdr_inline_decode(xdr, 4); 5923 if (unlikely(!p)) 5924 goto out_overflow; 5925 sizechanged = be32_to_cpup(p); 5926 5927 if (sizechanged) { 5928 /* throw away new size */ 5929 p = xdr_inline_decode(xdr, 8); 5930 if (unlikely(!p)) 5931 goto out_overflow; 5932 } 5933 return 0; 5934out_overflow: 5935 print_overflow_msg(__func__, xdr); 5936 return -EIO; 5937} 5938 5939static int decode_test_stateid(struct xdr_stream *xdr, 5940 struct nfs41_test_stateid_res *res) 5941{ 5942 __be32 *p; 5943 int status; 5944 int num_res; 5945 5946 status = decode_op_hdr(xdr, OP_TEST_STATEID); 5947 if (status) 5948 return status; 5949 5950 p = xdr_inline_decode(xdr, 4); 5951 if (unlikely(!p)) 5952 goto out_overflow; 5953 num_res = be32_to_cpup(p++); 5954 if (num_res != 1) 5955 goto out; 5956 5957 p = xdr_inline_decode(xdr, 4); 5958 if (unlikely(!p)) 5959 goto out_overflow; 5960 res->status = be32_to_cpup(p++); 5961 5962 return status; 5963out_overflow: 5964 print_overflow_msg(__func__, xdr); 5965out: 5966 return -EIO; 5967} 5968 5969static int decode_free_stateid(struct xdr_stream *xdr, 5970 struct nfs41_free_stateid_res *res) 5971{ 5972 res->status = decode_op_hdr(xdr, OP_FREE_STATEID); 5973 return res->status; 5974} 5975#endif /* CONFIG_NFS_V4_1 */ 5976 5977/* 5978 * END OF "GENERIC" DECODE ROUTINES. 5979 */ 5980 5981/* 5982 * Decode OPEN_DOWNGRADE response 5983 */ 5984static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp, 5985 struct xdr_stream *xdr, 5986 struct nfs_closeres *res) 5987{ 5988 struct compound_hdr hdr; 5989 int status; 5990 5991 status = decode_compound_hdr(xdr, &hdr); 5992 if (status) 5993 goto out; 5994 status = decode_sequence(xdr, &res->seq_res, rqstp); 5995 if (status) 5996 goto out; 5997 status = decode_putfh(xdr); 5998 if (status) 5999 goto out; 6000 status = decode_open_downgrade(xdr, res); 6001 if (status != 0) 6002 goto out; 6003 decode_getfattr(xdr, res->fattr, res->server); 6004out: 6005 return status; 6006} 6007 6008/* 6009 * Decode ACCESS response 6010 */ 6011static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6012 struct nfs4_accessres *res) 6013{ 6014 struct compound_hdr hdr; 6015 int status; 6016 6017 status = decode_compound_hdr(xdr, &hdr); 6018 if (status) 6019 goto out; 6020 status = decode_sequence(xdr, &res->seq_res, rqstp); 6021 if (status) 6022 goto out; 6023 status = decode_putfh(xdr); 6024 if (status != 0) 6025 goto out; 6026 status = decode_access(xdr, &res->supported, &res->access); 6027 if (status != 0) 6028 goto out; 6029 decode_getfattr(xdr, res->fattr, res->server); 6030out: 6031 return status; 6032} 6033 6034/* 6035 * Decode LOOKUP response 6036 */ 6037static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6038 struct nfs4_lookup_res *res) 6039{ 6040 struct compound_hdr hdr; 6041 int status; 6042 6043 status = decode_compound_hdr(xdr, &hdr); 6044 if (status) 6045 goto out; 6046 status = decode_sequence(xdr, &res->seq_res, rqstp); 6047 if (status) 6048 goto out; 6049 status = decode_putfh(xdr); 6050 if (status) 6051 goto out; 6052 status = decode_lookup(xdr); 6053 if (status) 6054 goto out; 6055 status = decode_getfh(xdr, res->fh); 6056 if (status) 6057 goto out; 6058 status = decode_getfattr_label(xdr, res->fattr, res->label, res->server); 6059out: 6060 return status; 6061} 6062 6063/* 6064 * Decode LOOKUP_ROOT response 6065 */ 6066static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp, 6067 struct xdr_stream *xdr, 6068 struct nfs4_lookup_res *res) 6069{ 6070 struct compound_hdr hdr; 6071 int status; 6072 6073 status = decode_compound_hdr(xdr, &hdr); 6074 if (status) 6075 goto out; 6076 status = decode_sequence(xdr, &res->seq_res, rqstp); 6077 if (status) 6078 goto out; 6079 status = decode_putrootfh(xdr); 6080 if (status) 6081 goto out; 6082 status = decode_getfh(xdr, res->fh); 6083 if (status == 0) 6084 status = decode_getfattr_label(xdr, res->fattr, 6085 res->label, res->server); 6086out: 6087 return status; 6088} 6089 6090/* 6091 * Decode REMOVE response 6092 */ 6093static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6094 struct nfs_removeres *res) 6095{ 6096 struct compound_hdr hdr; 6097 int status; 6098 6099 status = decode_compound_hdr(xdr, &hdr); 6100 if (status) 6101 goto out; 6102 status = decode_sequence(xdr, &res->seq_res, rqstp); 6103 if (status) 6104 goto out; 6105 status = decode_putfh(xdr); 6106 if (status) 6107 goto out; 6108 status = decode_remove(xdr, &res->cinfo); 6109out: 6110 return status; 6111} 6112 6113/* 6114 * Decode RENAME response 6115 */ 6116static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6117 struct nfs_renameres *res) 6118{ 6119 struct compound_hdr hdr; 6120 int status; 6121 6122 status = decode_compound_hdr(xdr, &hdr); 6123 if (status) 6124 goto out; 6125 status = decode_sequence(xdr, &res->seq_res, rqstp); 6126 if (status) 6127 goto out; 6128 status = decode_putfh(xdr); 6129 if (status) 6130 goto out; 6131 status = decode_savefh(xdr); 6132 if (status) 6133 goto out; 6134 status = decode_putfh(xdr); 6135 if (status) 6136 goto out; 6137 status = decode_rename(xdr, &res->old_cinfo, &res->new_cinfo); 6138out: 6139 return status; 6140} 6141 6142/* 6143 * Decode LINK response 6144 */ 6145static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6146 struct nfs4_link_res *res) 6147{ 6148 struct compound_hdr hdr; 6149 int status; 6150 6151 status = decode_compound_hdr(xdr, &hdr); 6152 if (status) 6153 goto out; 6154 status = decode_sequence(xdr, &res->seq_res, rqstp); 6155 if (status) 6156 goto out; 6157 status = decode_putfh(xdr); 6158 if (status) 6159 goto out; 6160 status = decode_savefh(xdr); 6161 if (status) 6162 goto out; 6163 status = decode_putfh(xdr); 6164 if (status) 6165 goto out; 6166 status = decode_link(xdr, &res->cinfo); 6167 if (status) 6168 goto out; 6169 /* 6170 * Note order: OP_LINK leaves the directory as the current 6171 * filehandle. 6172 */ 6173 status = decode_restorefh(xdr); 6174 if (status) 6175 goto out; 6176 decode_getfattr_label(xdr, res->fattr, res->label, res->server); 6177out: 6178 return status; 6179} 6180 6181/* 6182 * Decode CREATE response 6183 */ 6184static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6185 struct nfs4_create_res *res) 6186{ 6187 struct compound_hdr hdr; 6188 int status; 6189 6190 status = decode_compound_hdr(xdr, &hdr); 6191 if (status) 6192 goto out; 6193 status = decode_sequence(xdr, &res->seq_res, rqstp); 6194 if (status) 6195 goto out; 6196 status = decode_putfh(xdr); 6197 if (status) 6198 goto out; 6199 status = decode_create(xdr, &res->dir_cinfo); 6200 if (status) 6201 goto out; 6202 status = decode_getfh(xdr, res->fh); 6203 if (status) 6204 goto out; 6205 decode_getfattr_label(xdr, res->fattr, res->label, res->server); 6206out: 6207 return status; 6208} 6209 6210/* 6211 * Decode SYMLINK response 6212 */ 6213static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6214 struct nfs4_create_res *res) 6215{ 6216 return nfs4_xdr_dec_create(rqstp, xdr, res); 6217} 6218 6219/* 6220 * Decode GETATTR response 6221 */ 6222static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6223 struct nfs4_getattr_res *res) 6224{ 6225 struct compound_hdr hdr; 6226 int status; 6227 6228 status = decode_compound_hdr(xdr, &hdr); 6229 if (status) 6230 goto out; 6231 status = decode_sequence(xdr, &res->seq_res, rqstp); 6232 if (status) 6233 goto out; 6234 status = decode_putfh(xdr); 6235 if (status) 6236 goto out; 6237 status = decode_getfattr_label(xdr, res->fattr, res->label, res->server); 6238out: 6239 return status; 6240} 6241 6242/* 6243 * Encode an SETACL request 6244 */ 6245static void nfs4_xdr_enc_setacl(struct rpc_rqst *req, struct xdr_stream *xdr, 6246 struct nfs_setaclargs *args) 6247{ 6248 struct compound_hdr hdr = { 6249 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 6250 }; 6251 6252 encode_compound_hdr(xdr, req, &hdr); 6253 encode_sequence(xdr, &args->seq_args, &hdr); 6254 encode_putfh(xdr, args->fh, &hdr); 6255 encode_setacl(xdr, args, &hdr); 6256 encode_nops(&hdr); 6257} 6258 6259/* 6260 * Decode SETACL response 6261 */ 6262static int 6263nfs4_xdr_dec_setacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6264 struct nfs_setaclres *res) 6265{ 6266 struct compound_hdr hdr; 6267 int status; 6268 6269 status = decode_compound_hdr(xdr, &hdr); 6270 if (status) 6271 goto out; 6272 status = decode_sequence(xdr, &res->seq_res, rqstp); 6273 if (status) 6274 goto out; 6275 status = decode_putfh(xdr); 6276 if (status) 6277 goto out; 6278 status = decode_setattr(xdr); 6279out: 6280 return status; 6281} 6282 6283/* 6284 * Decode GETACL response 6285 */ 6286static int 6287nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6288 struct nfs_getaclres *res) 6289{ 6290 struct compound_hdr hdr; 6291 int status; 6292 6293 if (res->acl_scratch != NULL) { 6294 void *p = page_address(res->acl_scratch); 6295 xdr_set_scratch_buffer(xdr, p, PAGE_SIZE); 6296 } 6297 status = decode_compound_hdr(xdr, &hdr); 6298 if (status) 6299 goto out; 6300 status = decode_sequence(xdr, &res->seq_res, rqstp); 6301 if (status) 6302 goto out; 6303 status = decode_putfh(xdr); 6304 if (status) 6305 goto out; 6306 status = decode_getacl(xdr, rqstp, res); 6307 6308out: 6309 return status; 6310} 6311 6312/* 6313 * Decode CLOSE response 6314 */ 6315static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6316 struct nfs_closeres *res) 6317{ 6318 struct compound_hdr hdr; 6319 int status; 6320 6321 status = decode_compound_hdr(xdr, &hdr); 6322 if (status) 6323 goto out; 6324 status = decode_sequence(xdr, &res->seq_res, rqstp); 6325 if (status) 6326 goto out; 6327 status = decode_putfh(xdr); 6328 if (status) 6329 goto out; 6330 status = decode_close(xdr, res); 6331 if (status != 0) 6332 goto out; 6333 /* 6334 * Note: Server may do delete on close for this file 6335 * in which case the getattr call will fail with 6336 * an ESTALE error. Shouldn't be a problem, 6337 * though, since fattr->valid will remain unset. 6338 */ 6339 decode_getfattr(xdr, res->fattr, res->server); 6340out: 6341 return status; 6342} 6343 6344/* 6345 * Decode OPEN response 6346 */ 6347static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6348 struct nfs_openres *res) 6349{ 6350 struct compound_hdr hdr; 6351 int status; 6352 6353 status = decode_compound_hdr(xdr, &hdr); 6354 if (status) 6355 goto out; 6356 status = decode_sequence(xdr, &res->seq_res, rqstp); 6357 if (status) 6358 goto out; 6359 status = decode_putfh(xdr); 6360 if (status) 6361 goto out; 6362 status = decode_open(xdr, res); 6363 if (status) 6364 goto out; 6365 status = decode_getfh(xdr, &res->fh); 6366 if (status) 6367 goto out; 6368 if (res->access_request) 6369 decode_access(xdr, &res->access_supported, &res->access_result); 6370 decode_getfattr_label(xdr, res->f_attr, res->f_label, res->server); 6371out: 6372 return status; 6373} 6374 6375/* 6376 * Decode OPEN_CONFIRM response 6377 */ 6378static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp, 6379 struct xdr_stream *xdr, 6380 struct nfs_open_confirmres *res) 6381{ 6382 struct compound_hdr hdr; 6383 int status; 6384 6385 status = decode_compound_hdr(xdr, &hdr); 6386 if (status) 6387 goto out; 6388 status = decode_putfh(xdr); 6389 if (status) 6390 goto out; 6391 status = decode_open_confirm(xdr, res); 6392out: 6393 return status; 6394} 6395 6396/* 6397 * Decode OPEN response 6398 */ 6399static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp, 6400 struct xdr_stream *xdr, 6401 struct nfs_openres *res) 6402{ 6403 struct compound_hdr hdr; 6404 int status; 6405 6406 status = decode_compound_hdr(xdr, &hdr); 6407 if (status) 6408 goto out; 6409 status = decode_sequence(xdr, &res->seq_res, rqstp); 6410 if (status) 6411 goto out; 6412 status = decode_putfh(xdr); 6413 if (status) 6414 goto out; 6415 status = decode_open(xdr, res); 6416 if (status) 6417 goto out; 6418 if (res->access_request) 6419 decode_access(xdr, &res->access_supported, &res->access_result); 6420 decode_getfattr(xdr, res->f_attr, res->server); 6421out: 6422 return status; 6423} 6424 6425/* 6426 * Decode SETATTR response 6427 */ 6428static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp, 6429 struct xdr_stream *xdr, 6430 struct nfs_setattrres *res) 6431{ 6432 struct compound_hdr hdr; 6433 int status; 6434 6435 status = decode_compound_hdr(xdr, &hdr); 6436 if (status) 6437 goto out; 6438 status = decode_sequence(xdr, &res->seq_res, rqstp); 6439 if (status) 6440 goto out; 6441 status = decode_putfh(xdr); 6442 if (status) 6443 goto out; 6444 status = decode_setattr(xdr); 6445 if (status) 6446 goto out; 6447 decode_getfattr_label(xdr, res->fattr, res->label, res->server); 6448out: 6449 return status; 6450} 6451 6452/* 6453 * Decode LOCK response 6454 */ 6455static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6456 struct nfs_lock_res *res) 6457{ 6458 struct compound_hdr hdr; 6459 int status; 6460 6461 status = decode_compound_hdr(xdr, &hdr); 6462 if (status) 6463 goto out; 6464 status = decode_sequence(xdr, &res->seq_res, rqstp); 6465 if (status) 6466 goto out; 6467 status = decode_putfh(xdr); 6468 if (status) 6469 goto out; 6470 status = decode_lock(xdr, res); 6471out: 6472 return status; 6473} 6474 6475/* 6476 * Decode LOCKT response 6477 */ 6478static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6479 struct nfs_lockt_res *res) 6480{ 6481 struct compound_hdr hdr; 6482 int status; 6483 6484 status = decode_compound_hdr(xdr, &hdr); 6485 if (status) 6486 goto out; 6487 status = decode_sequence(xdr, &res->seq_res, rqstp); 6488 if (status) 6489 goto out; 6490 status = decode_putfh(xdr); 6491 if (status) 6492 goto out; 6493 status = decode_lockt(xdr, res); 6494out: 6495 return status; 6496} 6497 6498/* 6499 * Decode LOCKU response 6500 */ 6501static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6502 struct nfs_locku_res *res) 6503{ 6504 struct compound_hdr hdr; 6505 int status; 6506 6507 status = decode_compound_hdr(xdr, &hdr); 6508 if (status) 6509 goto out; 6510 status = decode_sequence(xdr, &res->seq_res, rqstp); 6511 if (status) 6512 goto out; 6513 status = decode_putfh(xdr); 6514 if (status) 6515 goto out; 6516 status = decode_locku(xdr, res); 6517out: 6518 return status; 6519} 6520 6521static int nfs4_xdr_dec_release_lockowner(struct rpc_rqst *rqstp, 6522 struct xdr_stream *xdr, void *dummy) 6523{ 6524 struct compound_hdr hdr; 6525 int status; 6526 6527 status = decode_compound_hdr(xdr, &hdr); 6528 if (!status) 6529 status = decode_release_lockowner(xdr); 6530 return status; 6531} 6532 6533/* 6534 * Decode READLINK response 6535 */ 6536static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp, 6537 struct xdr_stream *xdr, 6538 struct nfs4_readlink_res *res) 6539{ 6540 struct compound_hdr hdr; 6541 int status; 6542 6543 status = decode_compound_hdr(xdr, &hdr); 6544 if (status) 6545 goto out; 6546 status = decode_sequence(xdr, &res->seq_res, rqstp); 6547 if (status) 6548 goto out; 6549 status = decode_putfh(xdr); 6550 if (status) 6551 goto out; 6552 status = decode_readlink(xdr, rqstp); 6553out: 6554 return status; 6555} 6556 6557/* 6558 * Decode READDIR response 6559 */ 6560static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6561 struct nfs4_readdir_res *res) 6562{ 6563 struct compound_hdr hdr; 6564 int status; 6565 6566 status = decode_compound_hdr(xdr, &hdr); 6567 if (status) 6568 goto out; 6569 status = decode_sequence(xdr, &res->seq_res, rqstp); 6570 if (status) 6571 goto out; 6572 status = decode_putfh(xdr); 6573 if (status) 6574 goto out; 6575 status = decode_readdir(xdr, rqstp, res); 6576out: 6577 return status; 6578} 6579 6580/* 6581 * Decode Read response 6582 */ 6583static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6584 struct nfs_pgio_res *res) 6585{ 6586 struct compound_hdr hdr; 6587 int status; 6588 6589 status = decode_compound_hdr(xdr, &hdr); 6590 res->op_status = hdr.status; 6591 if (status) 6592 goto out; 6593 status = decode_sequence(xdr, &res->seq_res, rqstp); 6594 if (status) 6595 goto out; 6596 status = decode_putfh(xdr); 6597 if (status) 6598 goto out; 6599 status = decode_read(xdr, rqstp, res); 6600 if (!status) 6601 status = res->count; 6602out: 6603 return status; 6604} 6605 6606/* 6607 * Decode WRITE response 6608 */ 6609static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6610 struct nfs_pgio_res *res) 6611{ 6612 struct compound_hdr hdr; 6613 int status; 6614 6615 status = decode_compound_hdr(xdr, &hdr); 6616 res->op_status = hdr.status; 6617 if (status) 6618 goto out; 6619 status = decode_sequence(xdr, &res->seq_res, rqstp); 6620 if (status) 6621 goto out; 6622 status = decode_putfh(xdr); 6623 if (status) 6624 goto out; 6625 status = decode_write(xdr, res); 6626 if (status) 6627 goto out; 6628 if (res->fattr) 6629 decode_getfattr(xdr, res->fattr, res->server); 6630 if (!status) 6631 status = res->count; 6632out: 6633 return status; 6634} 6635 6636/* 6637 * Decode COMMIT response 6638 */ 6639static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6640 struct nfs_commitres *res) 6641{ 6642 struct compound_hdr hdr; 6643 int status; 6644 6645 status = decode_compound_hdr(xdr, &hdr); 6646 res->op_status = hdr.status; 6647 if (status) 6648 goto out; 6649 status = decode_sequence(xdr, &res->seq_res, rqstp); 6650 if (status) 6651 goto out; 6652 status = decode_putfh(xdr); 6653 if (status) 6654 goto out; 6655 status = decode_commit(xdr, res); 6656out: 6657 return status; 6658} 6659 6660/* 6661 * Decode FSINFO response 6662 */ 6663static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr, 6664 struct nfs4_fsinfo_res *res) 6665{ 6666 struct compound_hdr hdr; 6667 int status; 6668 6669 status = decode_compound_hdr(xdr, &hdr); 6670 if (!status) 6671 status = decode_sequence(xdr, &res->seq_res, req); 6672 if (!status) 6673 status = decode_putfh(xdr); 6674 if (!status) 6675 status = decode_fsinfo(xdr, res->fsinfo); 6676 return status; 6677} 6678 6679/* 6680 * Decode PATHCONF response 6681 */ 6682static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr, 6683 struct nfs4_pathconf_res *res) 6684{ 6685 struct compound_hdr hdr; 6686 int status; 6687 6688 status = decode_compound_hdr(xdr, &hdr); 6689 if (!status) 6690 status = decode_sequence(xdr, &res->seq_res, req); 6691 if (!status) 6692 status = decode_putfh(xdr); 6693 if (!status) 6694 status = decode_pathconf(xdr, res->pathconf); 6695 return status; 6696} 6697 6698/* 6699 * Decode STATFS response 6700 */ 6701static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, struct xdr_stream *xdr, 6702 struct nfs4_statfs_res *res) 6703{ 6704 struct compound_hdr hdr; 6705 int status; 6706 6707 status = decode_compound_hdr(xdr, &hdr); 6708 if (!status) 6709 status = decode_sequence(xdr, &res->seq_res, req); 6710 if (!status) 6711 status = decode_putfh(xdr); 6712 if (!status) 6713 status = decode_statfs(xdr, res->fsstat); 6714 return status; 6715} 6716 6717/* 6718 * Decode GETATTR_BITMAP response 6719 */ 6720static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req, 6721 struct xdr_stream *xdr, 6722 struct nfs4_server_caps_res *res) 6723{ 6724 struct compound_hdr hdr; 6725 int status; 6726 6727 status = decode_compound_hdr(xdr, &hdr); 6728 if (status) 6729 goto out; 6730 status = decode_sequence(xdr, &res->seq_res, req); 6731 if (status) 6732 goto out; 6733 status = decode_putfh(xdr); 6734 if (status) 6735 goto out; 6736 status = decode_server_caps(xdr, res); 6737out: 6738 return status; 6739} 6740 6741/* 6742 * Decode RENEW response 6743 */ 6744static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6745 void *__unused) 6746{ 6747 struct compound_hdr hdr; 6748 int status; 6749 6750 status = decode_compound_hdr(xdr, &hdr); 6751 if (!status) 6752 status = decode_renew(xdr); 6753 return status; 6754} 6755 6756/* 6757 * Decode SETCLIENTID response 6758 */ 6759static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req, 6760 struct xdr_stream *xdr, 6761 struct nfs4_setclientid_res *res) 6762{ 6763 struct compound_hdr hdr; 6764 int status; 6765 6766 status = decode_compound_hdr(xdr, &hdr); 6767 if (!status) 6768 status = decode_setclientid(xdr, res); 6769 return status; 6770} 6771 6772/* 6773 * Decode SETCLIENTID_CONFIRM response 6774 */ 6775static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req, 6776 struct xdr_stream *xdr) 6777{ 6778 struct compound_hdr hdr; 6779 int status; 6780 6781 status = decode_compound_hdr(xdr, &hdr); 6782 if (!status) 6783 status = decode_setclientid_confirm(xdr); 6784 return status; 6785} 6786 6787/* 6788 * Decode DELEGRETURN response 6789 */ 6790static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp, 6791 struct xdr_stream *xdr, 6792 struct nfs4_delegreturnres *res) 6793{ 6794 struct compound_hdr hdr; 6795 int status; 6796 6797 status = decode_compound_hdr(xdr, &hdr); 6798 if (status) 6799 goto out; 6800 status = decode_sequence(xdr, &res->seq_res, rqstp); 6801 if (status) 6802 goto out; 6803 status = decode_putfh(xdr); 6804 if (status != 0) 6805 goto out; 6806 status = decode_getfattr(xdr, res->fattr, res->server); 6807 if (status != 0) 6808 goto out; 6809 status = decode_delegreturn(xdr); 6810out: 6811 return status; 6812} 6813 6814/* 6815 * Decode FS_LOCATIONS response 6816 */ 6817static int nfs4_xdr_dec_fs_locations(struct rpc_rqst *req, 6818 struct xdr_stream *xdr, 6819 struct nfs4_fs_locations_res *res) 6820{ 6821 struct compound_hdr hdr; 6822 int status; 6823 6824 status = decode_compound_hdr(xdr, &hdr); 6825 if (status) 6826 goto out; 6827 status = decode_sequence(xdr, &res->seq_res, req); 6828 if (status) 6829 goto out; 6830 status = decode_putfh(xdr); 6831 if (status) 6832 goto out; 6833 if (res->migration) { 6834 xdr_enter_page(xdr, PAGE_SIZE); 6835 status = decode_getfattr_generic(xdr, 6836 &res->fs_locations->fattr, 6837 NULL, res->fs_locations, 6838 NULL, res->fs_locations->server); 6839 if (status) 6840 goto out; 6841 if (res->renew) 6842 status = decode_renew(xdr); 6843 } else { 6844 status = decode_lookup(xdr); 6845 if (status) 6846 goto out; 6847 xdr_enter_page(xdr, PAGE_SIZE); 6848 status = decode_getfattr_generic(xdr, 6849 &res->fs_locations->fattr, 6850 NULL, res->fs_locations, 6851 NULL, res->fs_locations->server); 6852 } 6853out: 6854 return status; 6855} 6856 6857/* 6858 * Decode SECINFO response 6859 */ 6860static int nfs4_xdr_dec_secinfo(struct rpc_rqst *rqstp, 6861 struct xdr_stream *xdr, 6862 struct nfs4_secinfo_res *res) 6863{ 6864 struct compound_hdr hdr; 6865 int status; 6866 6867 status = decode_compound_hdr(xdr, &hdr); 6868 if (status) 6869 goto out; 6870 status = decode_sequence(xdr, &res->seq_res, rqstp); 6871 if (status) 6872 goto out; 6873 status = decode_putfh(xdr); 6874 if (status) 6875 goto out; 6876 status = decode_secinfo(xdr, res); 6877out: 6878 return status; 6879} 6880 6881/* 6882 * Decode FSID_PRESENT response 6883 */ 6884static int nfs4_xdr_dec_fsid_present(struct rpc_rqst *rqstp, 6885 struct xdr_stream *xdr, 6886 struct nfs4_fsid_present_res *res) 6887{ 6888 struct compound_hdr hdr; 6889 int status; 6890 6891 status = decode_compound_hdr(xdr, &hdr); 6892 if (status) 6893 goto out; 6894 status = decode_sequence(xdr, &res->seq_res, rqstp); 6895 if (status) 6896 goto out; 6897 status = decode_putfh(xdr); 6898 if (status) 6899 goto out; 6900 status = decode_getfh(xdr, res->fh); 6901 if (status) 6902 goto out; 6903 if (res->renew) 6904 status = decode_renew(xdr); 6905out: 6906 return status; 6907} 6908 6909#if defined(CONFIG_NFS_V4_1) 6910/* 6911 * Decode BIND_CONN_TO_SESSION response 6912 */ 6913static int nfs4_xdr_dec_bind_conn_to_session(struct rpc_rqst *rqstp, 6914 struct xdr_stream *xdr, 6915 void *res) 6916{ 6917 struct compound_hdr hdr; 6918 int status; 6919 6920 status = decode_compound_hdr(xdr, &hdr); 6921 if (!status) 6922 status = decode_bind_conn_to_session(xdr, res); 6923 return status; 6924} 6925 6926/* 6927 * Decode EXCHANGE_ID response 6928 */ 6929static int nfs4_xdr_dec_exchange_id(struct rpc_rqst *rqstp, 6930 struct xdr_stream *xdr, 6931 void *res) 6932{ 6933 struct compound_hdr hdr; 6934 int status; 6935 6936 status = decode_compound_hdr(xdr, &hdr); 6937 if (!status) 6938 status = decode_exchange_id(xdr, res); 6939 return status; 6940} 6941 6942/* 6943 * Decode CREATE_SESSION response 6944 */ 6945static int nfs4_xdr_dec_create_session(struct rpc_rqst *rqstp, 6946 struct xdr_stream *xdr, 6947 struct nfs41_create_session_res *res) 6948{ 6949 struct compound_hdr hdr; 6950 int status; 6951 6952 status = decode_compound_hdr(xdr, &hdr); 6953 if (!status) 6954 status = decode_create_session(xdr, res); 6955 return status; 6956} 6957 6958/* 6959 * Decode DESTROY_SESSION response 6960 */ 6961static int nfs4_xdr_dec_destroy_session(struct rpc_rqst *rqstp, 6962 struct xdr_stream *xdr, 6963 void *res) 6964{ 6965 struct compound_hdr hdr; 6966 int status; 6967 6968 status = decode_compound_hdr(xdr, &hdr); 6969 if (!status) 6970 status = decode_destroy_session(xdr, res); 6971 return status; 6972} 6973 6974/* 6975 * Decode DESTROY_CLIENTID response 6976 */ 6977static int nfs4_xdr_dec_destroy_clientid(struct rpc_rqst *rqstp, 6978 struct xdr_stream *xdr, 6979 void *res) 6980{ 6981 struct compound_hdr hdr; 6982 int status; 6983 6984 status = decode_compound_hdr(xdr, &hdr); 6985 if (!status) 6986 status = decode_destroy_clientid(xdr, res); 6987 return status; 6988} 6989 6990/* 6991 * Decode SEQUENCE response 6992 */ 6993static int nfs4_xdr_dec_sequence(struct rpc_rqst *rqstp, 6994 struct xdr_stream *xdr, 6995 struct nfs4_sequence_res *res) 6996{ 6997 struct compound_hdr hdr; 6998 int status; 6999 7000 status = decode_compound_hdr(xdr, &hdr); 7001 if (!status) 7002 status = decode_sequence(xdr, res, rqstp); 7003 return status; 7004} 7005 7006/* 7007 * Decode GET_LEASE_TIME response 7008 */ 7009static int nfs4_xdr_dec_get_lease_time(struct rpc_rqst *rqstp, 7010 struct xdr_stream *xdr, 7011 struct nfs4_get_lease_time_res *res) 7012{ 7013 struct compound_hdr hdr; 7014 int status; 7015 7016 status = decode_compound_hdr(xdr, &hdr); 7017 if (!status) 7018 status = decode_sequence(xdr, &res->lr_seq_res, rqstp); 7019 if (!status) 7020 status = decode_putrootfh(xdr); 7021 if (!status) 7022 status = decode_fsinfo(xdr, res->lr_fsinfo); 7023 return status; 7024} 7025 7026/* 7027 * Decode RECLAIM_COMPLETE response 7028 */ 7029static int nfs4_xdr_dec_reclaim_complete(struct rpc_rqst *rqstp, 7030 struct xdr_stream *xdr, 7031 struct nfs41_reclaim_complete_res *res) 7032{ 7033 struct compound_hdr hdr; 7034 int status; 7035 7036 status = decode_compound_hdr(xdr, &hdr); 7037 if (!status) 7038 status = decode_sequence(xdr, &res->seq_res, rqstp); 7039 if (!status) 7040 status = decode_reclaim_complete(xdr, NULL); 7041 return status; 7042} 7043 7044/* 7045 * Decode GETDEVINFO response 7046 */ 7047static int nfs4_xdr_dec_getdeviceinfo(struct rpc_rqst *rqstp, 7048 struct xdr_stream *xdr, 7049 struct nfs4_getdeviceinfo_res *res) 7050{ 7051 struct compound_hdr hdr; 7052 int status; 7053 7054 status = decode_compound_hdr(xdr, &hdr); 7055 if (status != 0) 7056 goto out; 7057 status = decode_sequence(xdr, &res->seq_res, rqstp); 7058 if (status != 0) 7059 goto out; 7060 status = decode_getdeviceinfo(xdr, res); 7061out: 7062 return status; 7063} 7064 7065/* 7066 * Decode LAYOUTGET response 7067 */ 7068static int nfs4_xdr_dec_layoutget(struct rpc_rqst *rqstp, 7069 struct xdr_stream *xdr, 7070 struct nfs4_layoutget_res *res) 7071{ 7072 struct compound_hdr hdr; 7073 int status; 7074 7075 status = decode_compound_hdr(xdr, &hdr); 7076 if (status) 7077 goto out; 7078 status = decode_sequence(xdr, &res->seq_res, rqstp); 7079 if (status) 7080 goto out; 7081 status = decode_putfh(xdr); 7082 if (status) 7083 goto out; 7084 status = decode_layoutget(xdr, rqstp, res); 7085out: 7086 return status; 7087} 7088 7089/* 7090 * Decode LAYOUTRETURN response 7091 */ 7092static int nfs4_xdr_dec_layoutreturn(struct rpc_rqst *rqstp, 7093 struct xdr_stream *xdr, 7094 struct nfs4_layoutreturn_res *res) 7095{ 7096 struct compound_hdr hdr; 7097 int status; 7098 7099 status = decode_compound_hdr(xdr, &hdr); 7100 if (status) 7101 goto out; 7102 status = decode_sequence(xdr, &res->seq_res, rqstp); 7103 if (status) 7104 goto out; 7105 status = decode_putfh(xdr); 7106 if (status) 7107 goto out; 7108 status = decode_layoutreturn(xdr, res); 7109out: 7110 return status; 7111} 7112 7113/* 7114 * Decode LAYOUTCOMMIT response 7115 */ 7116static int nfs4_xdr_dec_layoutcommit(struct rpc_rqst *rqstp, 7117 struct xdr_stream *xdr, 7118 struct nfs4_layoutcommit_res *res) 7119{ 7120 struct compound_hdr hdr; 7121 int status; 7122 7123 status = decode_compound_hdr(xdr, &hdr); 7124 if (status) 7125 goto out; 7126 status = decode_sequence(xdr, &res->seq_res, rqstp); 7127 if (status) 7128 goto out; 7129 status = decode_putfh(xdr); 7130 if (status) 7131 goto out; 7132 status = decode_layoutcommit(xdr, rqstp, res); 7133 if (status) 7134 goto out; 7135 decode_getfattr(xdr, res->fattr, res->server); 7136out: 7137 return status; 7138} 7139 7140/* 7141 * Decode SECINFO_NO_NAME response 7142 */ 7143static int nfs4_xdr_dec_secinfo_no_name(struct rpc_rqst *rqstp, 7144 struct xdr_stream *xdr, 7145 struct nfs4_secinfo_res *res) 7146{ 7147 struct compound_hdr hdr; 7148 int status; 7149 7150 status = decode_compound_hdr(xdr, &hdr); 7151 if (status) 7152 goto out; 7153 status = decode_sequence(xdr, &res->seq_res, rqstp); 7154 if (status) 7155 goto out; 7156 status = decode_putrootfh(xdr); 7157 if (status) 7158 goto out; 7159 status = decode_secinfo_no_name(xdr, res); 7160out: 7161 return status; 7162} 7163 7164/* 7165 * Decode TEST_STATEID response 7166 */ 7167static int nfs4_xdr_dec_test_stateid(struct rpc_rqst *rqstp, 7168 struct xdr_stream *xdr, 7169 struct nfs41_test_stateid_res *res) 7170{ 7171 struct compound_hdr hdr; 7172 int status; 7173 7174 status = decode_compound_hdr(xdr, &hdr); 7175 if (status) 7176 goto out; 7177 status = decode_sequence(xdr, &res->seq_res, rqstp); 7178 if (status) 7179 goto out; 7180 status = decode_test_stateid(xdr, res); 7181out: 7182 return status; 7183} 7184 7185/* 7186 * Decode FREE_STATEID response 7187 */ 7188static int nfs4_xdr_dec_free_stateid(struct rpc_rqst *rqstp, 7189 struct xdr_stream *xdr, 7190 struct nfs41_free_stateid_res *res) 7191{ 7192 struct compound_hdr hdr; 7193 int status; 7194 7195 status = decode_compound_hdr(xdr, &hdr); 7196 if (status) 7197 goto out; 7198 status = decode_sequence(xdr, &res->seq_res, rqstp); 7199 if (status) 7200 goto out; 7201 status = decode_free_stateid(xdr, res); 7202out: 7203 return status; 7204} 7205#endif /* CONFIG_NFS_V4_1 */ 7206 7207/** 7208 * nfs4_decode_dirent - Decode a single NFSv4 directory entry stored in 7209 * the local page cache. 7210 * @xdr: XDR stream where entry resides 7211 * @entry: buffer to fill in with entry data 7212 * @plus: boolean indicating whether this should be a readdirplus entry 7213 * 7214 * Returns zero if successful, otherwise a negative errno value is 7215 * returned. 7216 * 7217 * This function is not invoked during READDIR reply decoding, but 7218 * rather whenever an application invokes the getdents(2) system call 7219 * on a directory already in our cache. 7220 */ 7221int nfs4_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry, 7222 int plus) 7223{ 7224 unsigned int savep; 7225 uint32_t bitmap[3] = {0}; 7226 uint32_t len; 7227 __be32 *p = xdr_inline_decode(xdr, 4); 7228 if (unlikely(!p)) 7229 goto out_overflow; 7230 if (*p == xdr_zero) { 7231 p = xdr_inline_decode(xdr, 4); 7232 if (unlikely(!p)) 7233 goto out_overflow; 7234 if (*p == xdr_zero) 7235 return -EAGAIN; 7236 entry->eof = 1; 7237 return -EBADCOOKIE; 7238 } 7239 7240 p = xdr_inline_decode(xdr, 12); 7241 if (unlikely(!p)) 7242 goto out_overflow; 7243 entry->prev_cookie = entry->cookie; 7244 p = xdr_decode_hyper(p, &entry->cookie); 7245 entry->len = be32_to_cpup(p); 7246 7247 p = xdr_inline_decode(xdr, entry->len); 7248 if (unlikely(!p)) 7249 goto out_overflow; 7250 entry->name = (const char *) p; 7251 7252 /* 7253 * In case the server doesn't return an inode number, 7254 * we fake one here. (We don't use inode number 0, 7255 * since glibc seems to choke on it...) 7256 */ 7257 entry->ino = 1; 7258 entry->fattr->valid = 0; 7259 7260 if (decode_attr_bitmap(xdr, bitmap) < 0) 7261 goto out_overflow; 7262 7263 if (decode_attr_length(xdr, &len, &savep) < 0) 7264 goto out_overflow; 7265 7266 if (decode_getfattr_attrs(xdr, bitmap, entry->fattr, entry->fh, 7267 NULL, entry->label, entry->server) < 0) 7268 goto out_overflow; 7269 if (entry->fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID) 7270 entry->ino = entry->fattr->mounted_on_fileid; 7271 else if (entry->fattr->valid & NFS_ATTR_FATTR_FILEID) 7272 entry->ino = entry->fattr->fileid; 7273 7274 entry->d_type = DT_UNKNOWN; 7275 if (entry->fattr->valid & NFS_ATTR_FATTR_TYPE) 7276 entry->d_type = nfs_umode_to_dtype(entry->fattr->mode); 7277 7278 return 0; 7279 7280out_overflow: 7281 print_overflow_msg(__func__, xdr); 7282 return -EAGAIN; 7283} 7284 7285/* 7286 * We need to translate between nfs status return values and 7287 * the local errno values which may not be the same. 7288 */ 7289static struct { 7290 int stat; 7291 int errno; 7292} nfs_errtbl[] = { 7293 { NFS4_OK, 0 }, 7294 { NFS4ERR_PERM, -EPERM }, 7295 { NFS4ERR_NOENT, -ENOENT }, 7296 { NFS4ERR_IO, -errno_NFSERR_IO}, 7297 { NFS4ERR_NXIO, -ENXIO }, 7298 { NFS4ERR_ACCESS, -EACCES }, 7299 { NFS4ERR_EXIST, -EEXIST }, 7300 { NFS4ERR_XDEV, -EXDEV }, 7301 { NFS4ERR_NOTDIR, -ENOTDIR }, 7302 { NFS4ERR_ISDIR, -EISDIR }, 7303 { NFS4ERR_INVAL, -EINVAL }, 7304 { NFS4ERR_FBIG, -EFBIG }, 7305 { NFS4ERR_NOSPC, -ENOSPC }, 7306 { NFS4ERR_ROFS, -EROFS }, 7307 { NFS4ERR_MLINK, -EMLINK }, 7308 { NFS4ERR_NAMETOOLONG, -ENAMETOOLONG }, 7309 { NFS4ERR_NOTEMPTY, -ENOTEMPTY }, 7310 { NFS4ERR_DQUOT, -EDQUOT }, 7311 { NFS4ERR_STALE, -ESTALE }, 7312 { NFS4ERR_BADHANDLE, -EBADHANDLE }, 7313 { NFS4ERR_BAD_COOKIE, -EBADCOOKIE }, 7314 { NFS4ERR_NOTSUPP, -ENOTSUPP }, 7315 { NFS4ERR_TOOSMALL, -ETOOSMALL }, 7316 { NFS4ERR_SERVERFAULT, -EREMOTEIO }, 7317 { NFS4ERR_BADTYPE, -EBADTYPE }, 7318 { NFS4ERR_LOCKED, -EAGAIN }, 7319 { NFS4ERR_SYMLINK, -ELOOP }, 7320 { NFS4ERR_OP_ILLEGAL, -EOPNOTSUPP }, 7321 { NFS4ERR_DEADLOCK, -EDEADLK }, 7322 { -1, -EIO } 7323}; 7324 7325/* 7326 * Convert an NFS error code to a local one. 7327 * This one is used jointly by NFSv2 and NFSv3. 7328 */ 7329static int 7330nfs4_stat_to_errno(int stat) 7331{ 7332 int i; 7333 for (i = 0; nfs_errtbl[i].stat != -1; i++) { 7334 if (nfs_errtbl[i].stat == stat) 7335 return nfs_errtbl[i].errno; 7336 } 7337 if (stat <= 10000 || stat > 10100) { 7338 /* The server is looney tunes. */ 7339 return -EREMOTEIO; 7340 } 7341 /* If we cannot translate the error, the recovery routines should 7342 * handle it. 7343 * Note: remaining NFSv4 error codes have values > 10000, so should 7344 * not conflict with native Linux error codes. 7345 */ 7346 return -stat; 7347} 7348 7349#ifdef CONFIG_NFS_V4_2 7350#include "nfs42xdr.c" 7351#endif /* CONFIG_NFS_V4_2 */ 7352 7353#define PROC(proc, argtype, restype) \ 7354[NFSPROC4_CLNT_##proc] = { \ 7355 .p_proc = NFSPROC4_COMPOUND, \ 7356 .p_encode = (kxdreproc_t)nfs4_xdr_##argtype, \ 7357 .p_decode = (kxdrdproc_t)nfs4_xdr_##restype, \ 7358 .p_arglen = NFS4_##argtype##_sz, \ 7359 .p_replen = NFS4_##restype##_sz, \ 7360 .p_statidx = NFSPROC4_CLNT_##proc, \ 7361 .p_name = #proc, \ 7362} 7363 7364#define STUB(proc) \ 7365[NFSPROC4_CLNT_##proc] = { \ 7366 .p_name = #proc, \ 7367} 7368 7369struct rpc_procinfo nfs4_procedures[] = { 7370 PROC(READ, enc_read, dec_read), 7371 PROC(WRITE, enc_write, dec_write), 7372 PROC(COMMIT, enc_commit, dec_commit), 7373 PROC(OPEN, enc_open, dec_open), 7374 PROC(OPEN_CONFIRM, enc_open_confirm, dec_open_confirm), 7375 PROC(OPEN_NOATTR, enc_open_noattr, dec_open_noattr), 7376 PROC(OPEN_DOWNGRADE, enc_open_downgrade, dec_open_downgrade), 7377 PROC(CLOSE, enc_close, dec_close), 7378 PROC(SETATTR, enc_setattr, dec_setattr), 7379 PROC(FSINFO, enc_fsinfo, dec_fsinfo), 7380 PROC(RENEW, enc_renew, dec_renew), 7381 PROC(SETCLIENTID, enc_setclientid, dec_setclientid), 7382 PROC(SETCLIENTID_CONFIRM, enc_setclientid_confirm, dec_setclientid_confirm), 7383 PROC(LOCK, enc_lock, dec_lock), 7384 PROC(LOCKT, enc_lockt, dec_lockt), 7385 PROC(LOCKU, enc_locku, dec_locku), 7386 PROC(ACCESS, enc_access, dec_access), 7387 PROC(GETATTR, enc_getattr, dec_getattr), 7388 PROC(LOOKUP, enc_lookup, dec_lookup), 7389 PROC(LOOKUP_ROOT, enc_lookup_root, dec_lookup_root), 7390 PROC(REMOVE, enc_remove, dec_remove), 7391 PROC(RENAME, enc_rename, dec_rename), 7392 PROC(LINK, enc_link, dec_link), 7393 PROC(SYMLINK, enc_symlink, dec_symlink), 7394 PROC(CREATE, enc_create, dec_create), 7395 PROC(PATHCONF, enc_pathconf, dec_pathconf), 7396 PROC(STATFS, enc_statfs, dec_statfs), 7397 PROC(READLINK, enc_readlink, dec_readlink), 7398 PROC(READDIR, enc_readdir, dec_readdir), 7399 PROC(SERVER_CAPS, enc_server_caps, dec_server_caps), 7400 PROC(DELEGRETURN, enc_delegreturn, dec_delegreturn), 7401 PROC(GETACL, enc_getacl, dec_getacl), 7402 PROC(SETACL, enc_setacl, dec_setacl), 7403 PROC(FS_LOCATIONS, enc_fs_locations, dec_fs_locations), 7404 PROC(RELEASE_LOCKOWNER, enc_release_lockowner, dec_release_lockowner), 7405 PROC(SECINFO, enc_secinfo, dec_secinfo), 7406 PROC(FSID_PRESENT, enc_fsid_present, dec_fsid_present), 7407#if defined(CONFIG_NFS_V4_1) 7408 PROC(EXCHANGE_ID, enc_exchange_id, dec_exchange_id), 7409 PROC(CREATE_SESSION, enc_create_session, dec_create_session), 7410 PROC(DESTROY_SESSION, enc_destroy_session, dec_destroy_session), 7411 PROC(SEQUENCE, enc_sequence, dec_sequence), 7412 PROC(GET_LEASE_TIME, enc_get_lease_time, dec_get_lease_time), 7413 PROC(RECLAIM_COMPLETE, enc_reclaim_complete, dec_reclaim_complete), 7414 PROC(GETDEVICEINFO, enc_getdeviceinfo, dec_getdeviceinfo), 7415 PROC(LAYOUTGET, enc_layoutget, dec_layoutget), 7416 PROC(LAYOUTCOMMIT, enc_layoutcommit, dec_layoutcommit), 7417 PROC(LAYOUTRETURN, enc_layoutreturn, dec_layoutreturn), 7418 PROC(SECINFO_NO_NAME, enc_secinfo_no_name, dec_secinfo_no_name), 7419 PROC(TEST_STATEID, enc_test_stateid, dec_test_stateid), 7420 PROC(FREE_STATEID, enc_free_stateid, dec_free_stateid), 7421 STUB(GETDEVICELIST), 7422 PROC(BIND_CONN_TO_SESSION, 7423 enc_bind_conn_to_session, dec_bind_conn_to_session), 7424 PROC(DESTROY_CLIENTID, enc_destroy_clientid, dec_destroy_clientid), 7425#endif /* CONFIG_NFS_V4_1 */ 7426#ifdef CONFIG_NFS_V4_2 7427 PROC(SEEK, enc_seek, dec_seek), 7428 PROC(ALLOCATE, enc_allocate, dec_allocate), 7429 PROC(DEALLOCATE, enc_deallocate, dec_deallocate), 7430#endif /* CONFIG_NFS_V4_2 */ 7431}; 7432 7433const struct rpc_version nfs_version4 = { 7434 .number = 4, 7435 .nrprocs = ARRAY_SIZE(nfs4_procedures), 7436 .procs = nfs4_procedures 7437}; 7438 7439/* 7440 * Local variables: 7441 * c-basic-offset: 8 7442 * End: 7443 */ 7444