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 "nfs4trace.h" 58#include "internal.h" 59#include "nfs4idmap.h" 60#include "nfs4session.h" 61#include "pnfs.h" 62#include "netns.h" 63 64#define NFSDBG_FACILITY NFSDBG_XDR 65 66/* Mapping from NFS error code to "errno" error code. */ 67#define errno_NFSERR_IO EIO 68 69struct compound_hdr; 70static int nfs4_stat_to_errno(int); 71static void encode_layoutget(struct xdr_stream *xdr, 72 const struct nfs4_layoutget_args *args, 73 struct compound_hdr *hdr); 74static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req, 75 struct nfs4_layoutget_res *res); 76 77/* NFSv4 COMPOUND tags are only wanted for debugging purposes */ 78#ifdef DEBUG 79#define NFS4_MAXTAGLEN 20 80#else 81#define NFS4_MAXTAGLEN 0 82#endif 83 84/* lock,open owner id: 85 * we currently use size 2 (u64) out of (NFS4_OPAQUE_LIMIT >> 2) 86 */ 87#define pagepad_maxsz (1) 88#define open_owner_id_maxsz (1 + 2 + 1 + 1 + 2) 89#define lock_owner_id_maxsz (1 + 1 + 4) 90#define decode_lockowner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ)) 91#define compound_encode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2)) 92#define compound_decode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2)) 93#define op_encode_hdr_maxsz (1) 94#define op_decode_hdr_maxsz (2) 95#define encode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE)) 96#define decode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE)) 97#define encode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE)) 98#define decode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE)) 99#define encode_putfh_maxsz (op_encode_hdr_maxsz + 1 + \ 100 (NFS4_FHSIZE >> 2)) 101#define decode_putfh_maxsz (op_decode_hdr_maxsz) 102#define encode_putrootfh_maxsz (op_encode_hdr_maxsz) 103#define decode_putrootfh_maxsz (op_decode_hdr_maxsz) 104#define encode_getfh_maxsz (op_encode_hdr_maxsz) 105#define decode_getfh_maxsz (op_decode_hdr_maxsz + 1 + \ 106 ((3+NFS4_FHSIZE) >> 2)) 107#define nfs4_fattr_bitmap_maxsz 4 108#define encode_getattr_maxsz (op_encode_hdr_maxsz + nfs4_fattr_bitmap_maxsz) 109#define nfstime4_maxsz (3) 110#define nfs4_name_maxsz (1 + ((3 + NFS4_MAXNAMLEN) >> 2)) 111#define nfs4_path_maxsz (1 + ((3 + NFS4_MAXPATHLEN) >> 2)) 112#define nfs4_owner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ)) 113#define nfs4_group_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ)) 114#ifdef CONFIG_NFS_V4_SECURITY_LABEL 115/* PI(4 bytes) + LFS(4 bytes) + 1(for null terminator?) + MAXLABELLEN */ 116#define nfs4_label_maxsz (4 + 4 + 1 + XDR_QUADLEN(NFS4_MAXLABELLEN)) 117#else 118#define nfs4_label_maxsz 0 119#endif 120/* We support only one layout type per file system */ 121#define decode_mdsthreshold_maxsz (1 + 1 + nfs4_fattr_bitmap_maxsz + 1 + 8) 122/* This is based on getfattr, which uses the most attributes: */ 123#define nfs4_fattr_value_maxsz (1 + (1 + 2 + 2 + 4 + 2 + 1 + 1 + 2 + 2 + \ 124 3*nfstime4_maxsz + \ 125 nfs4_owner_maxsz + \ 126 nfs4_group_maxsz + nfs4_label_maxsz + \ 127 decode_mdsthreshold_maxsz)) 128#define nfs4_fattr_maxsz (nfs4_fattr_bitmap_maxsz + \ 129 nfs4_fattr_value_maxsz) 130#define decode_getattr_maxsz (op_decode_hdr_maxsz + nfs4_fattr_maxsz) 131#define encode_attrs_maxsz (nfs4_fattr_bitmap_maxsz + \ 132 1 + 2 + 1 + \ 133 nfs4_owner_maxsz + \ 134 nfs4_group_maxsz + \ 135 nfs4_label_maxsz + \ 136 1 + nfstime4_maxsz + \ 137 1 + nfstime4_maxsz) 138#define encode_savefh_maxsz (op_encode_hdr_maxsz) 139#define decode_savefh_maxsz (op_decode_hdr_maxsz) 140#define encode_restorefh_maxsz (op_encode_hdr_maxsz) 141#define decode_restorefh_maxsz (op_decode_hdr_maxsz) 142#define encode_fsinfo_maxsz (encode_getattr_maxsz) 143/* The 5 accounts for the PNFS attributes, and assumes that at most three 144 * layout types will be returned. 145 */ 146#define decode_fsinfo_maxsz (op_decode_hdr_maxsz + \ 147 nfs4_fattr_bitmap_maxsz + 1 + \ 148 1 /* lease time */ + \ 149 2 /* max filesize */ + \ 150 2 /* max read */ + \ 151 2 /* max write */ + \ 152 nfstime4_maxsz /* time delta */ + \ 153 5 /* fs layout types */ + \ 154 1 /* layout blksize */ + \ 155 1 /* clone blksize */ + \ 156 1 /* change attr type */ + \ 157 1 /* xattr support */) 158#define encode_renew_maxsz (op_encode_hdr_maxsz + 3) 159#define decode_renew_maxsz (op_decode_hdr_maxsz) 160#define encode_setclientid_maxsz \ 161 (op_encode_hdr_maxsz + \ 162 XDR_QUADLEN(NFS4_VERIFIER_SIZE) + \ 163 /* client name */ \ 164 1 + XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \ 165 1 /* sc_prog */ + \ 166 1 + XDR_QUADLEN(RPCBIND_MAXNETIDLEN) + \ 167 1 + XDR_QUADLEN(RPCBIND_MAXUADDRLEN) + \ 168 1) /* sc_cb_ident */ 169#define decode_setclientid_maxsz \ 170 (op_decode_hdr_maxsz + \ 171 2 /* clientid */ + \ 172 XDR_QUADLEN(NFS4_VERIFIER_SIZE) + \ 173 1 + XDR_QUADLEN(RPCBIND_MAXNETIDLEN) + \ 174 1 + XDR_QUADLEN(RPCBIND_MAXUADDRLEN)) 175#define encode_setclientid_confirm_maxsz \ 176 (op_encode_hdr_maxsz + \ 177 3 + (NFS4_VERIFIER_SIZE >> 2)) 178#define decode_setclientid_confirm_maxsz \ 179 (op_decode_hdr_maxsz) 180#define encode_lookup_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz) 181#define decode_lookup_maxsz (op_decode_hdr_maxsz) 182#define encode_lookupp_maxsz (op_encode_hdr_maxsz) 183#define decode_lookupp_maxsz (op_decode_hdr_maxsz) 184#define encode_share_access_maxsz \ 185 (2) 186#define encode_createmode_maxsz (1 + encode_attrs_maxsz + encode_verifier_maxsz) 187#define encode_opentype_maxsz (1 + encode_createmode_maxsz) 188#define encode_claim_null_maxsz (1 + nfs4_name_maxsz) 189#define encode_open_maxsz (op_encode_hdr_maxsz + \ 190 2 + encode_share_access_maxsz + 2 + \ 191 open_owner_id_maxsz + \ 192 encode_opentype_maxsz + \ 193 encode_claim_null_maxsz) 194#define decode_space_limit_maxsz (3) 195#define decode_ace_maxsz (3 + nfs4_owner_maxsz) 196#define decode_delegation_maxsz (1 + decode_stateid_maxsz + 1 + \ 197 decode_space_limit_maxsz + \ 198 decode_ace_maxsz) 199#define decode_change_info_maxsz (5) 200#define decode_open_maxsz (op_decode_hdr_maxsz + \ 201 decode_stateid_maxsz + \ 202 decode_change_info_maxsz + 1 + \ 203 nfs4_fattr_bitmap_maxsz + \ 204 decode_delegation_maxsz) 205#define encode_open_confirm_maxsz \ 206 (op_encode_hdr_maxsz + \ 207 encode_stateid_maxsz + 1) 208#define decode_open_confirm_maxsz \ 209 (op_decode_hdr_maxsz + \ 210 decode_stateid_maxsz) 211#define encode_open_downgrade_maxsz \ 212 (op_encode_hdr_maxsz + \ 213 encode_stateid_maxsz + 1 + \ 214 encode_share_access_maxsz) 215#define decode_open_downgrade_maxsz \ 216 (op_decode_hdr_maxsz + \ 217 decode_stateid_maxsz) 218#define encode_close_maxsz (op_encode_hdr_maxsz + \ 219 1 + encode_stateid_maxsz) 220#define decode_close_maxsz (op_decode_hdr_maxsz + \ 221 decode_stateid_maxsz) 222#define encode_setattr_maxsz (op_encode_hdr_maxsz + \ 223 encode_stateid_maxsz + \ 224 encode_attrs_maxsz) 225#define decode_setattr_maxsz (op_decode_hdr_maxsz + \ 226 nfs4_fattr_bitmap_maxsz) 227#define encode_read_maxsz (op_encode_hdr_maxsz + \ 228 encode_stateid_maxsz + 3) 229#define decode_read_maxsz (op_decode_hdr_maxsz + 2 + pagepad_maxsz) 230#define encode_readdir_maxsz (op_encode_hdr_maxsz + \ 231 2 + encode_verifier_maxsz + 5 + \ 232 nfs4_label_maxsz) 233#define decode_readdir_maxsz (op_decode_hdr_maxsz + \ 234 decode_verifier_maxsz + pagepad_maxsz) 235#define encode_readlink_maxsz (op_encode_hdr_maxsz) 236#define decode_readlink_maxsz (op_decode_hdr_maxsz + 1 + pagepad_maxsz) 237#define encode_write_maxsz (op_encode_hdr_maxsz + \ 238 encode_stateid_maxsz + 4) 239#define decode_write_maxsz (op_decode_hdr_maxsz + \ 240 2 + decode_verifier_maxsz) 241#define encode_commit_maxsz (op_encode_hdr_maxsz + 3) 242#define decode_commit_maxsz (op_decode_hdr_maxsz + \ 243 decode_verifier_maxsz) 244#define encode_remove_maxsz (op_encode_hdr_maxsz + \ 245 nfs4_name_maxsz) 246#define decode_remove_maxsz (op_decode_hdr_maxsz + \ 247 decode_change_info_maxsz) 248#define encode_rename_maxsz (op_encode_hdr_maxsz + \ 249 2 * nfs4_name_maxsz) 250#define decode_rename_maxsz (op_decode_hdr_maxsz + \ 251 decode_change_info_maxsz + \ 252 decode_change_info_maxsz) 253#define encode_link_maxsz (op_encode_hdr_maxsz + \ 254 nfs4_name_maxsz) 255#define decode_link_maxsz (op_decode_hdr_maxsz + decode_change_info_maxsz) 256#define encode_lockowner_maxsz (7) 257#define encode_lock_maxsz (op_encode_hdr_maxsz + \ 258 7 + \ 259 1 + encode_stateid_maxsz + 1 + \ 260 encode_lockowner_maxsz) 261#define decode_lock_denied_maxsz \ 262 (8 + decode_lockowner_maxsz) 263#define decode_lock_maxsz (op_decode_hdr_maxsz + \ 264 decode_lock_denied_maxsz) 265#define encode_lockt_maxsz (op_encode_hdr_maxsz + 5 + \ 266 encode_lockowner_maxsz) 267#define decode_lockt_maxsz (op_decode_hdr_maxsz + \ 268 decode_lock_denied_maxsz) 269#define encode_locku_maxsz (op_encode_hdr_maxsz + 3 + \ 270 encode_stateid_maxsz + \ 271 4) 272#define decode_locku_maxsz (op_decode_hdr_maxsz + \ 273 decode_stateid_maxsz) 274#define encode_release_lockowner_maxsz \ 275 (op_encode_hdr_maxsz + \ 276 encode_lockowner_maxsz) 277#define decode_release_lockowner_maxsz \ 278 (op_decode_hdr_maxsz) 279#define encode_access_maxsz (op_encode_hdr_maxsz + 1) 280#define decode_access_maxsz (op_decode_hdr_maxsz + 2) 281#define encode_symlink_maxsz (op_encode_hdr_maxsz + \ 282 1 + nfs4_name_maxsz + \ 283 1 + \ 284 nfs4_fattr_maxsz) 285#define decode_symlink_maxsz (op_decode_hdr_maxsz + 8) 286#define encode_create_maxsz (op_encode_hdr_maxsz + \ 287 1 + 2 + nfs4_name_maxsz + \ 288 encode_attrs_maxsz) 289#define decode_create_maxsz (op_decode_hdr_maxsz + \ 290 decode_change_info_maxsz + \ 291 nfs4_fattr_bitmap_maxsz) 292#define encode_statfs_maxsz (encode_getattr_maxsz) 293#define decode_statfs_maxsz (decode_getattr_maxsz) 294#define encode_delegreturn_maxsz (op_encode_hdr_maxsz + 4) 295#define decode_delegreturn_maxsz (op_decode_hdr_maxsz) 296#define encode_getacl_maxsz (encode_getattr_maxsz) 297#define decode_getacl_maxsz (op_decode_hdr_maxsz + \ 298 nfs4_fattr_bitmap_maxsz + 1 + pagepad_maxsz) 299#define encode_setacl_maxsz (op_encode_hdr_maxsz + \ 300 encode_stateid_maxsz + 3) 301#define decode_setacl_maxsz (decode_setattr_maxsz) 302#define encode_fs_locations_maxsz \ 303 (encode_getattr_maxsz) 304#define decode_fs_locations_maxsz \ 305 (pagepad_maxsz) 306#define encode_secinfo_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz) 307#define decode_secinfo_maxsz (op_decode_hdr_maxsz + 1 + ((NFS_MAX_SECFLAVORS * (16 + GSS_OID_MAX_LEN)) / 4)) 308 309#if defined(CONFIG_NFS_V4_1) 310#define NFS4_MAX_MACHINE_NAME_LEN (64) 311#define IMPL_NAME_LIMIT (sizeof(utsname()->sysname) + sizeof(utsname()->release) + \ 312 sizeof(utsname()->version) + sizeof(utsname()->machine) + 8) 313 314#define encode_exchange_id_maxsz (op_encode_hdr_maxsz + \ 315 encode_verifier_maxsz + \ 316 1 /* co_ownerid.len */ + \ 317 /* eia_clientowner */ \ 318 1 + XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \ 319 1 /* flags */ + \ 320 1 /* spa_how */ + \ 321 /* max is SP4_MACH_CRED (for now) */ + \ 322 1 + NFS4_OP_MAP_NUM_WORDS + \ 323 1 + NFS4_OP_MAP_NUM_WORDS + \ 324 1 /* implementation id array of size 1 */ + \ 325 1 /* nii_domain */ + \ 326 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \ 327 1 /* nii_name */ + \ 328 XDR_QUADLEN(IMPL_NAME_LIMIT) + \ 329 3 /* nii_date */) 330#define decode_exchange_id_maxsz (op_decode_hdr_maxsz + \ 331 2 /* eir_clientid */ + \ 332 1 /* eir_sequenceid */ + \ 333 1 /* eir_flags */ + \ 334 1 /* spr_how */ + \ 335 /* max is SP4_MACH_CRED (for now) */ + \ 336 1 + NFS4_OP_MAP_NUM_WORDS + \ 337 1 + NFS4_OP_MAP_NUM_WORDS + \ 338 2 /* eir_server_owner.so_minor_id */ + \ 339 /* eir_server_owner.so_major_id<> */ \ 340 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \ 341 /* eir_server_scope<> */ \ 342 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \ 343 1 /* eir_server_impl_id array length */ + \ 344 1 /* nii_domain */ + \ 345 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \ 346 1 /* nii_name */ + \ 347 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \ 348 3 /* nii_date */) 349#define encode_channel_attrs_maxsz (6 + 1 /* ca_rdma_ird.len (0) */) 350#define decode_channel_attrs_maxsz (6 + \ 351 1 /* ca_rdma_ird.len */ + \ 352 1 /* ca_rdma_ird */) 353#define encode_create_session_maxsz (op_encode_hdr_maxsz + \ 354 2 /* csa_clientid */ + \ 355 1 /* csa_sequence */ + \ 356 1 /* csa_flags */ + \ 357 encode_channel_attrs_maxsz + \ 358 encode_channel_attrs_maxsz + \ 359 1 /* csa_cb_program */ + \ 360 1 /* csa_sec_parms.len (1) */ + \ 361 1 /* cb_secflavor (AUTH_SYS) */ + \ 362 1 /* stamp */ + \ 363 1 /* machinename.len */ + \ 364 XDR_QUADLEN(NFS4_MAX_MACHINE_NAME_LEN) + \ 365 1 /* uid */ + \ 366 1 /* gid */ + \ 367 1 /* gids.len (0) */) 368#define decode_create_session_maxsz (op_decode_hdr_maxsz + \ 369 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \ 370 1 /* csr_sequence */ + \ 371 1 /* csr_flags */ + \ 372 decode_channel_attrs_maxsz + \ 373 decode_channel_attrs_maxsz) 374#define encode_bind_conn_to_session_maxsz (op_encode_hdr_maxsz + \ 375 /* bctsa_sessid */ \ 376 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \ 377 1 /* bctsa_dir */ + \ 378 1 /* bctsa_use_conn_in_rdma_mode */) 379#define decode_bind_conn_to_session_maxsz (op_decode_hdr_maxsz + \ 380 /* bctsr_sessid */ \ 381 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \ 382 1 /* bctsr_dir */ + \ 383 1 /* bctsr_use_conn_in_rdma_mode */) 384#define encode_destroy_session_maxsz (op_encode_hdr_maxsz + 4) 385#define decode_destroy_session_maxsz (op_decode_hdr_maxsz) 386#define encode_destroy_clientid_maxsz (op_encode_hdr_maxsz + 2) 387#define decode_destroy_clientid_maxsz (op_decode_hdr_maxsz) 388#define encode_sequence_maxsz (op_encode_hdr_maxsz + \ 389 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 4) 390#define decode_sequence_maxsz (op_decode_hdr_maxsz + \ 391 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 5) 392#define encode_reclaim_complete_maxsz (op_encode_hdr_maxsz + 4) 393#define decode_reclaim_complete_maxsz (op_decode_hdr_maxsz + 4) 394#define encode_getdeviceinfo_maxsz (op_encode_hdr_maxsz + \ 395 XDR_QUADLEN(NFS4_DEVICEID4_SIZE) + \ 396 1 /* layout type */ + \ 397 1 /* maxcount */ + \ 398 1 /* bitmap size */ + \ 399 1 /* notification bitmap length */ + \ 400 1 /* notification bitmap, word 0 */) 401#define decode_getdeviceinfo_maxsz (op_decode_hdr_maxsz + \ 402 1 /* layout type */ + \ 403 1 /* opaque devaddr4 length */ + \ 404 /* devaddr4 payload is read into page */ \ 405 1 /* notification bitmap length */ + \ 406 1 /* notification bitmap, word 0 */ + \ 407 pagepad_maxsz /* possible XDR padding */) 408#define encode_layoutget_maxsz (op_encode_hdr_maxsz + 10 + \ 409 encode_stateid_maxsz) 410#define decode_layoutget_maxsz (op_decode_hdr_maxsz + 8 + \ 411 decode_stateid_maxsz + \ 412 XDR_QUADLEN(PNFS_LAYOUT_MAXSIZE) + \ 413 pagepad_maxsz) 414#define encode_layoutcommit_maxsz (op_encode_hdr_maxsz + \ 415 2 /* offset */ + \ 416 2 /* length */ + \ 417 1 /* reclaim */ + \ 418 encode_stateid_maxsz + \ 419 1 /* new offset (true) */ + \ 420 2 /* last byte written */ + \ 421 1 /* nt_timechanged (false) */ + \ 422 1 /* layoutupdate4 layout type */ + \ 423 1 /* layoutupdate4 opaqueue len */) 424 /* the actual content of layoutupdate4 should 425 be allocated by drivers and spliced in 426 using xdr_write_pages */ 427#define decode_layoutcommit_maxsz (op_decode_hdr_maxsz + 3) 428#define encode_layoutreturn_maxsz (8 + op_encode_hdr_maxsz + \ 429 encode_stateid_maxsz + \ 430 1 + \ 431 XDR_QUADLEN(NFS4_OPAQUE_LIMIT)) 432#define decode_layoutreturn_maxsz (op_decode_hdr_maxsz + \ 433 1 + decode_stateid_maxsz) 434#define encode_secinfo_no_name_maxsz (op_encode_hdr_maxsz + 1) 435#define decode_secinfo_no_name_maxsz decode_secinfo_maxsz 436#define encode_test_stateid_maxsz (op_encode_hdr_maxsz + 2 + \ 437 XDR_QUADLEN(NFS4_STATEID_SIZE)) 438#define decode_test_stateid_maxsz (op_decode_hdr_maxsz + 2 + 1) 439#define encode_free_stateid_maxsz (op_encode_hdr_maxsz + 1 + \ 440 XDR_QUADLEN(NFS4_STATEID_SIZE)) 441#define decode_free_stateid_maxsz (op_decode_hdr_maxsz) 442#else /* CONFIG_NFS_V4_1 */ 443#define encode_sequence_maxsz 0 444#define decode_sequence_maxsz 0 445#define encode_layoutreturn_maxsz 0 446#define decode_layoutreturn_maxsz 0 447#define encode_layoutget_maxsz 0 448#define decode_layoutget_maxsz 0 449#endif /* CONFIG_NFS_V4_1 */ 450 451#define NFS4_enc_compound_sz (1024) /* XXX: large enough? */ 452#define NFS4_dec_compound_sz (1024) /* XXX: large enough? */ 453#define NFS4_enc_read_sz (compound_encode_hdr_maxsz + \ 454 encode_sequence_maxsz + \ 455 encode_putfh_maxsz + \ 456 encode_read_maxsz) 457#define NFS4_dec_read_sz (compound_decode_hdr_maxsz + \ 458 decode_sequence_maxsz + \ 459 decode_putfh_maxsz + \ 460 decode_read_maxsz) 461#define NFS4_enc_readlink_sz (compound_encode_hdr_maxsz + \ 462 encode_sequence_maxsz + \ 463 encode_putfh_maxsz + \ 464 encode_readlink_maxsz) 465#define NFS4_dec_readlink_sz (compound_decode_hdr_maxsz + \ 466 decode_sequence_maxsz + \ 467 decode_putfh_maxsz + \ 468 decode_readlink_maxsz) 469#define NFS4_enc_readdir_sz (compound_encode_hdr_maxsz + \ 470 encode_sequence_maxsz + \ 471 encode_putfh_maxsz + \ 472 encode_readdir_maxsz) 473#define NFS4_dec_readdir_sz (compound_decode_hdr_maxsz + \ 474 decode_sequence_maxsz + \ 475 decode_putfh_maxsz + \ 476 decode_readdir_maxsz) 477#define NFS4_enc_write_sz (compound_encode_hdr_maxsz + \ 478 encode_sequence_maxsz + \ 479 encode_putfh_maxsz + \ 480 encode_write_maxsz + \ 481 encode_getattr_maxsz) 482#define NFS4_dec_write_sz (compound_decode_hdr_maxsz + \ 483 decode_sequence_maxsz + \ 484 decode_putfh_maxsz + \ 485 decode_write_maxsz + \ 486 decode_getattr_maxsz) 487#define NFS4_enc_commit_sz (compound_encode_hdr_maxsz + \ 488 encode_sequence_maxsz + \ 489 encode_putfh_maxsz + \ 490 encode_commit_maxsz) 491#define NFS4_dec_commit_sz (compound_decode_hdr_maxsz + \ 492 decode_sequence_maxsz + \ 493 decode_putfh_maxsz + \ 494 decode_commit_maxsz) 495#define NFS4_enc_open_sz (compound_encode_hdr_maxsz + \ 496 encode_sequence_maxsz + \ 497 encode_putfh_maxsz + \ 498 encode_open_maxsz + \ 499 encode_access_maxsz + \ 500 encode_getfh_maxsz + \ 501 encode_getattr_maxsz + \ 502 encode_layoutget_maxsz) 503#define NFS4_dec_open_sz (compound_decode_hdr_maxsz + \ 504 decode_sequence_maxsz + \ 505 decode_putfh_maxsz + \ 506 decode_open_maxsz + \ 507 decode_access_maxsz + \ 508 decode_getfh_maxsz + \ 509 decode_getattr_maxsz + \ 510 decode_layoutget_maxsz) 511#define NFS4_enc_open_confirm_sz \ 512 (compound_encode_hdr_maxsz + \ 513 encode_putfh_maxsz + \ 514 encode_open_confirm_maxsz) 515#define NFS4_dec_open_confirm_sz \ 516 (compound_decode_hdr_maxsz + \ 517 decode_putfh_maxsz + \ 518 decode_open_confirm_maxsz) 519#define NFS4_enc_open_noattr_sz (compound_encode_hdr_maxsz + \ 520 encode_sequence_maxsz + \ 521 encode_putfh_maxsz + \ 522 encode_open_maxsz + \ 523 encode_access_maxsz + \ 524 encode_getattr_maxsz + \ 525 encode_layoutget_maxsz) 526#define NFS4_dec_open_noattr_sz (compound_decode_hdr_maxsz + \ 527 decode_sequence_maxsz + \ 528 decode_putfh_maxsz + \ 529 decode_open_maxsz + \ 530 decode_access_maxsz + \ 531 decode_getattr_maxsz + \ 532 decode_layoutget_maxsz) 533#define NFS4_enc_open_downgrade_sz \ 534 (compound_encode_hdr_maxsz + \ 535 encode_sequence_maxsz + \ 536 encode_putfh_maxsz + \ 537 encode_layoutreturn_maxsz + \ 538 encode_open_downgrade_maxsz) 539#define NFS4_dec_open_downgrade_sz \ 540 (compound_decode_hdr_maxsz + \ 541 decode_sequence_maxsz + \ 542 decode_putfh_maxsz + \ 543 decode_layoutreturn_maxsz + \ 544 decode_open_downgrade_maxsz) 545#define NFS4_enc_close_sz (compound_encode_hdr_maxsz + \ 546 encode_sequence_maxsz + \ 547 encode_putfh_maxsz + \ 548 encode_layoutreturn_maxsz + \ 549 encode_close_maxsz + \ 550 encode_getattr_maxsz) 551#define NFS4_dec_close_sz (compound_decode_hdr_maxsz + \ 552 decode_sequence_maxsz + \ 553 decode_putfh_maxsz + \ 554 decode_layoutreturn_maxsz + \ 555 decode_close_maxsz + \ 556 decode_getattr_maxsz) 557#define NFS4_enc_setattr_sz (compound_encode_hdr_maxsz + \ 558 encode_sequence_maxsz + \ 559 encode_putfh_maxsz + \ 560 encode_setattr_maxsz + \ 561 encode_getattr_maxsz) 562#define NFS4_dec_setattr_sz (compound_decode_hdr_maxsz + \ 563 decode_sequence_maxsz + \ 564 decode_putfh_maxsz + \ 565 decode_setattr_maxsz + \ 566 decode_getattr_maxsz) 567#define NFS4_enc_fsinfo_sz (compound_encode_hdr_maxsz + \ 568 encode_sequence_maxsz + \ 569 encode_putfh_maxsz + \ 570 encode_fsinfo_maxsz) 571#define NFS4_dec_fsinfo_sz (compound_decode_hdr_maxsz + \ 572 decode_sequence_maxsz + \ 573 decode_putfh_maxsz + \ 574 decode_fsinfo_maxsz) 575#define NFS4_enc_renew_sz (compound_encode_hdr_maxsz + \ 576 encode_renew_maxsz) 577#define NFS4_dec_renew_sz (compound_decode_hdr_maxsz + \ 578 decode_renew_maxsz) 579#define NFS4_enc_setclientid_sz (compound_encode_hdr_maxsz + \ 580 encode_setclientid_maxsz) 581#define NFS4_dec_setclientid_sz (compound_decode_hdr_maxsz + \ 582 decode_setclientid_maxsz) 583#define NFS4_enc_setclientid_confirm_sz \ 584 (compound_encode_hdr_maxsz + \ 585 encode_setclientid_confirm_maxsz) 586#define NFS4_dec_setclientid_confirm_sz \ 587 (compound_decode_hdr_maxsz + \ 588 decode_setclientid_confirm_maxsz) 589#define NFS4_enc_lock_sz (compound_encode_hdr_maxsz + \ 590 encode_sequence_maxsz + \ 591 encode_putfh_maxsz + \ 592 encode_lock_maxsz) 593#define NFS4_dec_lock_sz (compound_decode_hdr_maxsz + \ 594 decode_sequence_maxsz + \ 595 decode_putfh_maxsz + \ 596 decode_lock_maxsz) 597#define NFS4_enc_lockt_sz (compound_encode_hdr_maxsz + \ 598 encode_sequence_maxsz + \ 599 encode_putfh_maxsz + \ 600 encode_lockt_maxsz) 601#define NFS4_dec_lockt_sz (compound_decode_hdr_maxsz + \ 602 decode_sequence_maxsz + \ 603 decode_putfh_maxsz + \ 604 decode_lockt_maxsz) 605#define NFS4_enc_locku_sz (compound_encode_hdr_maxsz + \ 606 encode_sequence_maxsz + \ 607 encode_putfh_maxsz + \ 608 encode_locku_maxsz) 609#define NFS4_dec_locku_sz (compound_decode_hdr_maxsz + \ 610 decode_sequence_maxsz + \ 611 decode_putfh_maxsz + \ 612 decode_locku_maxsz) 613#define NFS4_enc_release_lockowner_sz \ 614 (compound_encode_hdr_maxsz + \ 615 encode_lockowner_maxsz) 616#define NFS4_dec_release_lockowner_sz \ 617 (compound_decode_hdr_maxsz + \ 618 decode_lockowner_maxsz) 619#define NFS4_enc_access_sz (compound_encode_hdr_maxsz + \ 620 encode_sequence_maxsz + \ 621 encode_putfh_maxsz + \ 622 encode_access_maxsz + \ 623 encode_getattr_maxsz) 624#define NFS4_dec_access_sz (compound_decode_hdr_maxsz + \ 625 decode_sequence_maxsz + \ 626 decode_putfh_maxsz + \ 627 decode_access_maxsz + \ 628 decode_getattr_maxsz) 629#define NFS4_enc_getattr_sz (compound_encode_hdr_maxsz + \ 630 encode_sequence_maxsz + \ 631 encode_putfh_maxsz + \ 632 encode_getattr_maxsz + \ 633 encode_renew_maxsz) 634#define NFS4_dec_getattr_sz (compound_decode_hdr_maxsz + \ 635 decode_sequence_maxsz + \ 636 decode_putfh_maxsz + \ 637 decode_getattr_maxsz + \ 638 decode_renew_maxsz) 639#define NFS4_enc_lookup_sz (compound_encode_hdr_maxsz + \ 640 encode_sequence_maxsz + \ 641 encode_putfh_maxsz + \ 642 encode_lookup_maxsz + \ 643 encode_getattr_maxsz + \ 644 encode_getfh_maxsz) 645#define NFS4_dec_lookup_sz (compound_decode_hdr_maxsz + \ 646 decode_sequence_maxsz + \ 647 decode_putfh_maxsz + \ 648 decode_lookup_maxsz + \ 649 decode_getattr_maxsz + \ 650 decode_getfh_maxsz) 651#define NFS4_enc_lookupp_sz (compound_encode_hdr_maxsz + \ 652 encode_sequence_maxsz + \ 653 encode_putfh_maxsz + \ 654 encode_lookupp_maxsz + \ 655 encode_getattr_maxsz + \ 656 encode_getfh_maxsz) 657#define NFS4_dec_lookupp_sz (compound_decode_hdr_maxsz + \ 658 decode_sequence_maxsz + \ 659 decode_putfh_maxsz + \ 660 decode_lookupp_maxsz + \ 661 decode_getattr_maxsz + \ 662 decode_getfh_maxsz) 663#define NFS4_enc_lookup_root_sz (compound_encode_hdr_maxsz + \ 664 encode_sequence_maxsz + \ 665 encode_putrootfh_maxsz + \ 666 encode_getattr_maxsz + \ 667 encode_getfh_maxsz) 668#define NFS4_dec_lookup_root_sz (compound_decode_hdr_maxsz + \ 669 decode_sequence_maxsz + \ 670 decode_putrootfh_maxsz + \ 671 decode_getattr_maxsz + \ 672 decode_getfh_maxsz) 673#define NFS4_enc_remove_sz (compound_encode_hdr_maxsz + \ 674 encode_sequence_maxsz + \ 675 encode_putfh_maxsz + \ 676 encode_remove_maxsz) 677#define NFS4_dec_remove_sz (compound_decode_hdr_maxsz + \ 678 decode_sequence_maxsz + \ 679 decode_putfh_maxsz + \ 680 decode_remove_maxsz) 681#define NFS4_enc_rename_sz (compound_encode_hdr_maxsz + \ 682 encode_sequence_maxsz + \ 683 encode_putfh_maxsz + \ 684 encode_savefh_maxsz + \ 685 encode_putfh_maxsz + \ 686 encode_rename_maxsz) 687#define NFS4_dec_rename_sz (compound_decode_hdr_maxsz + \ 688 decode_sequence_maxsz + \ 689 decode_putfh_maxsz + \ 690 decode_savefh_maxsz + \ 691 decode_putfh_maxsz + \ 692 decode_rename_maxsz) 693#define NFS4_enc_link_sz (compound_encode_hdr_maxsz + \ 694 encode_sequence_maxsz + \ 695 encode_putfh_maxsz + \ 696 encode_savefh_maxsz + \ 697 encode_putfh_maxsz + \ 698 encode_link_maxsz + \ 699 encode_restorefh_maxsz + \ 700 encode_getattr_maxsz) 701#define NFS4_dec_link_sz (compound_decode_hdr_maxsz + \ 702 decode_sequence_maxsz + \ 703 decode_putfh_maxsz + \ 704 decode_savefh_maxsz + \ 705 decode_putfh_maxsz + \ 706 decode_link_maxsz + \ 707 decode_restorefh_maxsz + \ 708 decode_getattr_maxsz) 709#define NFS4_enc_symlink_sz (compound_encode_hdr_maxsz + \ 710 encode_sequence_maxsz + \ 711 encode_putfh_maxsz + \ 712 encode_symlink_maxsz + \ 713 encode_getattr_maxsz + \ 714 encode_getfh_maxsz) 715#define NFS4_dec_symlink_sz (compound_decode_hdr_maxsz + \ 716 decode_sequence_maxsz + \ 717 decode_putfh_maxsz + \ 718 decode_symlink_maxsz + \ 719 decode_getattr_maxsz + \ 720 decode_getfh_maxsz) 721#define NFS4_enc_create_sz (compound_encode_hdr_maxsz + \ 722 encode_sequence_maxsz + \ 723 encode_putfh_maxsz + \ 724 encode_create_maxsz + \ 725 encode_getfh_maxsz + \ 726 encode_getattr_maxsz) 727#define NFS4_dec_create_sz (compound_decode_hdr_maxsz + \ 728 decode_sequence_maxsz + \ 729 decode_putfh_maxsz + \ 730 decode_create_maxsz + \ 731 decode_getfh_maxsz + \ 732 decode_getattr_maxsz) 733#define NFS4_enc_pathconf_sz (compound_encode_hdr_maxsz + \ 734 encode_sequence_maxsz + \ 735 encode_putfh_maxsz + \ 736 encode_getattr_maxsz) 737#define NFS4_dec_pathconf_sz (compound_decode_hdr_maxsz + \ 738 decode_sequence_maxsz + \ 739 decode_putfh_maxsz + \ 740 decode_getattr_maxsz) 741#define NFS4_enc_statfs_sz (compound_encode_hdr_maxsz + \ 742 encode_sequence_maxsz + \ 743 encode_putfh_maxsz + \ 744 encode_statfs_maxsz) 745#define NFS4_dec_statfs_sz (compound_decode_hdr_maxsz + \ 746 decode_sequence_maxsz + \ 747 decode_putfh_maxsz + \ 748 decode_statfs_maxsz) 749#define NFS4_enc_server_caps_sz (compound_encode_hdr_maxsz + \ 750 encode_sequence_maxsz + \ 751 encode_putfh_maxsz + \ 752 encode_getattr_maxsz) 753#define NFS4_dec_server_caps_sz (compound_decode_hdr_maxsz + \ 754 decode_sequence_maxsz + \ 755 decode_putfh_maxsz + \ 756 decode_getattr_maxsz) 757#define NFS4_enc_delegreturn_sz (compound_encode_hdr_maxsz + \ 758 encode_sequence_maxsz + \ 759 encode_putfh_maxsz + \ 760 encode_layoutreturn_maxsz + \ 761 encode_delegreturn_maxsz + \ 762 encode_getattr_maxsz) 763#define NFS4_dec_delegreturn_sz (compound_decode_hdr_maxsz + \ 764 decode_sequence_maxsz + \ 765 decode_putfh_maxsz + \ 766 decode_layoutreturn_maxsz + \ 767 decode_delegreturn_maxsz + \ 768 decode_getattr_maxsz) 769#define NFS4_enc_getacl_sz (compound_encode_hdr_maxsz + \ 770 encode_sequence_maxsz + \ 771 encode_putfh_maxsz + \ 772 encode_getacl_maxsz) 773#define NFS4_dec_getacl_sz (compound_decode_hdr_maxsz + \ 774 decode_sequence_maxsz + \ 775 decode_putfh_maxsz + \ 776 decode_getacl_maxsz) 777#define NFS4_enc_setacl_sz (compound_encode_hdr_maxsz + \ 778 encode_sequence_maxsz + \ 779 encode_putfh_maxsz + \ 780 encode_setacl_maxsz) 781#define NFS4_dec_setacl_sz (compound_decode_hdr_maxsz + \ 782 decode_sequence_maxsz + \ 783 decode_putfh_maxsz + \ 784 decode_setacl_maxsz) 785#define NFS4_enc_fs_locations_sz \ 786 (compound_encode_hdr_maxsz + \ 787 encode_sequence_maxsz + \ 788 encode_putfh_maxsz + \ 789 encode_lookup_maxsz + \ 790 encode_fs_locations_maxsz + \ 791 encode_renew_maxsz) 792#define NFS4_dec_fs_locations_sz \ 793 (compound_decode_hdr_maxsz + \ 794 decode_sequence_maxsz + \ 795 decode_putfh_maxsz + \ 796 decode_lookup_maxsz + \ 797 decode_fs_locations_maxsz + \ 798 decode_renew_maxsz) 799#define NFS4_enc_secinfo_sz (compound_encode_hdr_maxsz + \ 800 encode_sequence_maxsz + \ 801 encode_putfh_maxsz + \ 802 encode_secinfo_maxsz) 803#define NFS4_dec_secinfo_sz (compound_decode_hdr_maxsz + \ 804 decode_sequence_maxsz + \ 805 decode_putfh_maxsz + \ 806 decode_secinfo_maxsz) 807#define NFS4_enc_fsid_present_sz \ 808 (compound_encode_hdr_maxsz + \ 809 encode_sequence_maxsz + \ 810 encode_putfh_maxsz + \ 811 encode_getfh_maxsz + \ 812 encode_renew_maxsz) 813#define NFS4_dec_fsid_present_sz \ 814 (compound_decode_hdr_maxsz + \ 815 decode_sequence_maxsz + \ 816 decode_putfh_maxsz + \ 817 decode_getfh_maxsz + \ 818 decode_renew_maxsz) 819#if defined(CONFIG_NFS_V4_1) 820#define NFS4_enc_bind_conn_to_session_sz \ 821 (compound_encode_hdr_maxsz + \ 822 encode_bind_conn_to_session_maxsz) 823#define NFS4_dec_bind_conn_to_session_sz \ 824 (compound_decode_hdr_maxsz + \ 825 decode_bind_conn_to_session_maxsz) 826#define NFS4_enc_exchange_id_sz \ 827 (compound_encode_hdr_maxsz + \ 828 encode_exchange_id_maxsz) 829#define NFS4_dec_exchange_id_sz \ 830 (compound_decode_hdr_maxsz + \ 831 decode_exchange_id_maxsz) 832#define NFS4_enc_create_session_sz \ 833 (compound_encode_hdr_maxsz + \ 834 encode_create_session_maxsz) 835#define NFS4_dec_create_session_sz \ 836 (compound_decode_hdr_maxsz + \ 837 decode_create_session_maxsz) 838#define NFS4_enc_destroy_session_sz (compound_encode_hdr_maxsz + \ 839 encode_destroy_session_maxsz) 840#define NFS4_dec_destroy_session_sz (compound_decode_hdr_maxsz + \ 841 decode_destroy_session_maxsz) 842#define NFS4_enc_destroy_clientid_sz (compound_encode_hdr_maxsz + \ 843 encode_destroy_clientid_maxsz) 844#define NFS4_dec_destroy_clientid_sz (compound_decode_hdr_maxsz + \ 845 decode_destroy_clientid_maxsz) 846#define NFS4_enc_sequence_sz \ 847 (compound_decode_hdr_maxsz + \ 848 encode_sequence_maxsz) 849#define NFS4_dec_sequence_sz \ 850 (compound_decode_hdr_maxsz + \ 851 decode_sequence_maxsz) 852#endif 853#define NFS4_enc_get_lease_time_sz (compound_encode_hdr_maxsz + \ 854 encode_sequence_maxsz + \ 855 encode_putrootfh_maxsz + \ 856 encode_fsinfo_maxsz) 857#define NFS4_dec_get_lease_time_sz (compound_decode_hdr_maxsz + \ 858 decode_sequence_maxsz + \ 859 decode_putrootfh_maxsz + \ 860 decode_fsinfo_maxsz) 861#if defined(CONFIG_NFS_V4_1) 862#define NFS4_enc_reclaim_complete_sz (compound_encode_hdr_maxsz + \ 863 encode_sequence_maxsz + \ 864 encode_reclaim_complete_maxsz) 865#define NFS4_dec_reclaim_complete_sz (compound_decode_hdr_maxsz + \ 866 decode_sequence_maxsz + \ 867 decode_reclaim_complete_maxsz) 868#define NFS4_enc_getdeviceinfo_sz (compound_encode_hdr_maxsz + \ 869 encode_sequence_maxsz +\ 870 encode_getdeviceinfo_maxsz) 871#define NFS4_dec_getdeviceinfo_sz (compound_decode_hdr_maxsz + \ 872 decode_sequence_maxsz + \ 873 decode_getdeviceinfo_maxsz) 874#define NFS4_enc_layoutget_sz (compound_encode_hdr_maxsz + \ 875 encode_sequence_maxsz + \ 876 encode_putfh_maxsz + \ 877 encode_layoutget_maxsz) 878#define NFS4_dec_layoutget_sz (compound_decode_hdr_maxsz + \ 879 decode_sequence_maxsz + \ 880 decode_putfh_maxsz + \ 881 decode_layoutget_maxsz) 882#define NFS4_enc_layoutcommit_sz (compound_encode_hdr_maxsz + \ 883 encode_sequence_maxsz +\ 884 encode_putfh_maxsz + \ 885 encode_layoutcommit_maxsz + \ 886 encode_getattr_maxsz) 887#define NFS4_dec_layoutcommit_sz (compound_decode_hdr_maxsz + \ 888 decode_sequence_maxsz + \ 889 decode_putfh_maxsz + \ 890 decode_layoutcommit_maxsz + \ 891 decode_getattr_maxsz) 892#define NFS4_enc_layoutreturn_sz (compound_encode_hdr_maxsz + \ 893 encode_sequence_maxsz + \ 894 encode_putfh_maxsz + \ 895 encode_layoutreturn_maxsz) 896#define NFS4_dec_layoutreturn_sz (compound_decode_hdr_maxsz + \ 897 decode_sequence_maxsz + \ 898 decode_putfh_maxsz + \ 899 decode_layoutreturn_maxsz) 900#define NFS4_enc_secinfo_no_name_sz (compound_encode_hdr_maxsz + \ 901 encode_sequence_maxsz + \ 902 encode_putrootfh_maxsz +\ 903 encode_secinfo_no_name_maxsz) 904#define NFS4_dec_secinfo_no_name_sz (compound_decode_hdr_maxsz + \ 905 decode_sequence_maxsz + \ 906 decode_putrootfh_maxsz + \ 907 decode_secinfo_no_name_maxsz) 908#define NFS4_enc_test_stateid_sz (compound_encode_hdr_maxsz + \ 909 encode_sequence_maxsz + \ 910 encode_test_stateid_maxsz) 911#define NFS4_dec_test_stateid_sz (compound_decode_hdr_maxsz + \ 912 decode_sequence_maxsz + \ 913 decode_test_stateid_maxsz) 914#define NFS4_enc_free_stateid_sz (compound_encode_hdr_maxsz + \ 915 encode_sequence_maxsz + \ 916 encode_free_stateid_maxsz) 917#define NFS4_dec_free_stateid_sz (compound_decode_hdr_maxsz + \ 918 decode_sequence_maxsz + \ 919 decode_free_stateid_maxsz) 920 921const u32 nfs41_maxwrite_overhead = ((RPC_MAX_HEADER_WITH_AUTH + 922 compound_encode_hdr_maxsz + 923 encode_sequence_maxsz + 924 encode_putfh_maxsz + 925 encode_getattr_maxsz) * 926 XDR_UNIT); 927 928const u32 nfs41_maxread_overhead = ((RPC_MAX_HEADER_WITH_AUTH + 929 compound_decode_hdr_maxsz + 930 decode_sequence_maxsz + 931 decode_putfh_maxsz) * 932 XDR_UNIT); 933 934const u32 nfs41_maxgetdevinfo_overhead = ((RPC_MAX_REPHEADER_WITH_AUTH + 935 compound_decode_hdr_maxsz + 936 decode_sequence_maxsz) * 937 XDR_UNIT); 938EXPORT_SYMBOL_GPL(nfs41_maxgetdevinfo_overhead); 939#endif /* CONFIG_NFS_V4_1 */ 940 941static const umode_t nfs_type2fmt[] = { 942 [NF4BAD] = 0, 943 [NF4REG] = S_IFREG, 944 [NF4DIR] = S_IFDIR, 945 [NF4BLK] = S_IFBLK, 946 [NF4CHR] = S_IFCHR, 947 [NF4LNK] = S_IFLNK, 948 [NF4SOCK] = S_IFSOCK, 949 [NF4FIFO] = S_IFIFO, 950 [NF4ATTRDIR] = 0, 951 [NF4NAMEDATTR] = 0, 952}; 953 954struct compound_hdr { 955 int32_t status; 956 uint32_t nops; 957 __be32 * nops_p; 958 uint32_t taglen; 959 char * tag; 960 uint32_t replen; /* expected reply words */ 961 u32 minorversion; 962}; 963 964static __be32 *reserve_space(struct xdr_stream *xdr, size_t nbytes) 965{ 966 __be32 *p = xdr_reserve_space(xdr, nbytes); 967 BUG_ON(!p); 968 return p; 969} 970 971static void encode_opaque_fixed(struct xdr_stream *xdr, const void *buf, size_t len) 972{ 973 WARN_ON_ONCE(xdr_stream_encode_opaque_fixed(xdr, buf, len) < 0); 974} 975 976static void encode_string(struct xdr_stream *xdr, unsigned int len, const char *str) 977{ 978 WARN_ON_ONCE(xdr_stream_encode_opaque(xdr, str, len) < 0); 979} 980 981static void encode_uint32(struct xdr_stream *xdr, u32 n) 982{ 983 WARN_ON_ONCE(xdr_stream_encode_u32(xdr, n) < 0); 984} 985 986static void encode_uint64(struct xdr_stream *xdr, u64 n) 987{ 988 WARN_ON_ONCE(xdr_stream_encode_u64(xdr, n) < 0); 989} 990 991static ssize_t xdr_encode_bitmap4(struct xdr_stream *xdr, 992 const __u32 *bitmap, size_t len) 993{ 994 ssize_t ret; 995 996 /* Trim empty words */ 997 while (len > 0 && bitmap[len-1] == 0) 998 len--; 999 ret = xdr_stream_encode_uint32_array(xdr, bitmap, len); 1000 if (WARN_ON_ONCE(ret < 0)) 1001 return ret; 1002 return len; 1003} 1004 1005static size_t mask_bitmap4(const __u32 *bitmap, const __u32 *mask, 1006 __u32 *res, size_t len) 1007{ 1008 size_t i; 1009 __u32 tmp; 1010 1011 while (len > 0 && (bitmap[len-1] == 0 || mask[len-1] == 0)) 1012 len--; 1013 for (i = len; i-- > 0;) { 1014 tmp = bitmap[i] & mask[i]; 1015 res[i] = tmp; 1016 } 1017 return len; 1018} 1019 1020static void encode_nfs4_seqid(struct xdr_stream *xdr, 1021 const struct nfs_seqid *seqid) 1022{ 1023 if (seqid != NULL) 1024 encode_uint32(xdr, seqid->sequence->counter); 1025 else 1026 encode_uint32(xdr, 0); 1027} 1028 1029static void encode_compound_hdr(struct xdr_stream *xdr, 1030 struct rpc_rqst *req, 1031 struct compound_hdr *hdr) 1032{ 1033 __be32 *p; 1034 1035 /* initialize running count of expected bytes in reply. 1036 * NOTE: the replied tag SHOULD be the same is the one sent, 1037 * but this is not required as a MUST for the server to do so. */ 1038 hdr->replen = 3 + hdr->taglen; 1039 1040 WARN_ON_ONCE(hdr->taglen > NFS4_MAXTAGLEN); 1041 encode_string(xdr, hdr->taglen, hdr->tag); 1042 p = reserve_space(xdr, 8); 1043 *p++ = cpu_to_be32(hdr->minorversion); 1044 hdr->nops_p = p; 1045 *p = cpu_to_be32(hdr->nops); 1046} 1047 1048static void encode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 op, 1049 uint32_t replen, 1050 struct compound_hdr *hdr) 1051{ 1052 encode_uint32(xdr, op); 1053 hdr->nops++; 1054 hdr->replen += replen; 1055} 1056 1057static void encode_nops(struct compound_hdr *hdr) 1058{ 1059 WARN_ON_ONCE(hdr->nops > NFS4_MAX_OPS); 1060 *hdr->nops_p = htonl(hdr->nops); 1061} 1062 1063static void encode_nfs4_stateid(struct xdr_stream *xdr, const nfs4_stateid *stateid) 1064{ 1065 encode_opaque_fixed(xdr, stateid, NFS4_STATEID_SIZE); 1066} 1067 1068static void encode_nfs4_verifier(struct xdr_stream *xdr, const nfs4_verifier *verf) 1069{ 1070 encode_opaque_fixed(xdr, verf->data, NFS4_VERIFIER_SIZE); 1071} 1072 1073static __be32 * 1074xdr_encode_nfstime4(__be32 *p, const struct timespec64 *t) 1075{ 1076 p = xdr_encode_hyper(p, t->tv_sec); 1077 *p++ = cpu_to_be32(t->tv_nsec); 1078 return p; 1079} 1080 1081static void encode_attrs(struct xdr_stream *xdr, const struct iattr *iap, 1082 const struct nfs4_label *label, 1083 const umode_t *umask, 1084 const struct nfs_server *server, 1085 const uint32_t attrmask[]) 1086{ 1087 char owner_name[IDMAP_NAMESZ]; 1088 char owner_group[IDMAP_NAMESZ]; 1089 int owner_namelen = 0; 1090 int owner_grouplen = 0; 1091 __be32 *p; 1092 uint32_t len = 0; 1093 uint32_t bmval[3] = { 0 }; 1094 1095 /* 1096 * We reserve enough space to write the entire attribute buffer at once. 1097 */ 1098 if ((iap->ia_valid & ATTR_SIZE) && (attrmask[0] & FATTR4_WORD0_SIZE)) { 1099 bmval[0] |= FATTR4_WORD0_SIZE; 1100 len += 8; 1101 } 1102 if (iap->ia_valid & ATTR_MODE) { 1103 if (umask && (attrmask[2] & FATTR4_WORD2_MODE_UMASK)) { 1104 bmval[2] |= FATTR4_WORD2_MODE_UMASK; 1105 len += 8; 1106 } else if (attrmask[1] & FATTR4_WORD1_MODE) { 1107 bmval[1] |= FATTR4_WORD1_MODE; 1108 len += 4; 1109 } 1110 } 1111 if ((iap->ia_valid & ATTR_UID) && (attrmask[1] & FATTR4_WORD1_OWNER)) { 1112 owner_namelen = nfs_map_uid_to_name(server, iap->ia_uid, owner_name, IDMAP_NAMESZ); 1113 if (owner_namelen < 0) { 1114 dprintk("nfs: couldn't resolve uid %d to string\n", 1115 from_kuid(&init_user_ns, iap->ia_uid)); 1116 /* XXX */ 1117 strcpy(owner_name, "nobody"); 1118 owner_namelen = sizeof("nobody") - 1; 1119 /* goto out; */ 1120 } 1121 bmval[1] |= FATTR4_WORD1_OWNER; 1122 len += 4 + (XDR_QUADLEN(owner_namelen) << 2); 1123 } 1124 if ((iap->ia_valid & ATTR_GID) && 1125 (attrmask[1] & FATTR4_WORD1_OWNER_GROUP)) { 1126 owner_grouplen = nfs_map_gid_to_group(server, iap->ia_gid, owner_group, IDMAP_NAMESZ); 1127 if (owner_grouplen < 0) { 1128 dprintk("nfs: couldn't resolve gid %d to string\n", 1129 from_kgid(&init_user_ns, iap->ia_gid)); 1130 strcpy(owner_group, "nobody"); 1131 owner_grouplen = sizeof("nobody") - 1; 1132 /* goto out; */ 1133 } 1134 bmval[1] |= FATTR4_WORD1_OWNER_GROUP; 1135 len += 4 + (XDR_QUADLEN(owner_grouplen) << 2); 1136 } 1137 if (attrmask[1] & FATTR4_WORD1_TIME_ACCESS_SET) { 1138 if (iap->ia_valid & ATTR_ATIME_SET) { 1139 bmval[1] |= FATTR4_WORD1_TIME_ACCESS_SET; 1140 len += 4 + (nfstime4_maxsz << 2); 1141 } else if (iap->ia_valid & ATTR_ATIME) { 1142 bmval[1] |= FATTR4_WORD1_TIME_ACCESS_SET; 1143 len += 4; 1144 } 1145 } 1146 if (attrmask[1] & FATTR4_WORD1_TIME_MODIFY_SET) { 1147 if (iap->ia_valid & ATTR_MTIME_SET) { 1148 bmval[1] |= FATTR4_WORD1_TIME_MODIFY_SET; 1149 len += 4 + (nfstime4_maxsz << 2); 1150 } else if (iap->ia_valid & ATTR_MTIME) { 1151 bmval[1] |= FATTR4_WORD1_TIME_MODIFY_SET; 1152 len += 4; 1153 } 1154 } 1155 1156 if (label && (attrmask[2] & FATTR4_WORD2_SECURITY_LABEL)) { 1157 len += 4 + 4 + 4 + (XDR_QUADLEN(label->len) << 2); 1158 bmval[2] |= FATTR4_WORD2_SECURITY_LABEL; 1159 } 1160 1161 xdr_encode_bitmap4(xdr, bmval, ARRAY_SIZE(bmval)); 1162 xdr_stream_encode_opaque_inline(xdr, (void **)&p, len); 1163 1164 if (bmval[0] & FATTR4_WORD0_SIZE) 1165 p = xdr_encode_hyper(p, iap->ia_size); 1166 if (bmval[1] & FATTR4_WORD1_MODE) 1167 *p++ = cpu_to_be32(iap->ia_mode & S_IALLUGO); 1168 if (bmval[1] & FATTR4_WORD1_OWNER) 1169 p = xdr_encode_opaque(p, owner_name, owner_namelen); 1170 if (bmval[1] & FATTR4_WORD1_OWNER_GROUP) 1171 p = xdr_encode_opaque(p, owner_group, owner_grouplen); 1172 if (bmval[1] & FATTR4_WORD1_TIME_ACCESS_SET) { 1173 if (iap->ia_valid & ATTR_ATIME_SET) { 1174 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME); 1175 p = xdr_encode_nfstime4(p, &iap->ia_atime); 1176 } else 1177 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME); 1178 } 1179 if (bmval[1] & FATTR4_WORD1_TIME_MODIFY_SET) { 1180 if (iap->ia_valid & ATTR_MTIME_SET) { 1181 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME); 1182 p = xdr_encode_nfstime4(p, &iap->ia_mtime); 1183 } else 1184 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME); 1185 } 1186 if (label && (bmval[2] & FATTR4_WORD2_SECURITY_LABEL)) { 1187 *p++ = cpu_to_be32(label->lfs); 1188 *p++ = cpu_to_be32(label->pi); 1189 *p++ = cpu_to_be32(label->len); 1190 p = xdr_encode_opaque_fixed(p, label->label, label->len); 1191 } 1192 if (bmval[2] & FATTR4_WORD2_MODE_UMASK) { 1193 *p++ = cpu_to_be32(iap->ia_mode & S_IALLUGO); 1194 *p++ = cpu_to_be32(*umask); 1195 } 1196 1197/* out: */ 1198} 1199 1200static void encode_access(struct xdr_stream *xdr, u32 access, struct compound_hdr *hdr) 1201{ 1202 encode_op_hdr(xdr, OP_ACCESS, decode_access_maxsz, hdr); 1203 encode_uint32(xdr, access); 1204} 1205 1206static void encode_close(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr) 1207{ 1208 encode_op_hdr(xdr, OP_CLOSE, decode_close_maxsz, hdr); 1209 encode_nfs4_seqid(xdr, arg->seqid); 1210 encode_nfs4_stateid(xdr, &arg->stateid); 1211} 1212 1213static void encode_commit(struct xdr_stream *xdr, const struct nfs_commitargs *args, struct compound_hdr *hdr) 1214{ 1215 __be32 *p; 1216 1217 encode_op_hdr(xdr, OP_COMMIT, decode_commit_maxsz, hdr); 1218 p = reserve_space(xdr, 12); 1219 p = xdr_encode_hyper(p, args->offset); 1220 *p = cpu_to_be32(args->count); 1221} 1222 1223static void encode_create(struct xdr_stream *xdr, const struct nfs4_create_arg *create, struct compound_hdr *hdr) 1224{ 1225 __be32 *p; 1226 1227 encode_op_hdr(xdr, OP_CREATE, decode_create_maxsz, hdr); 1228 encode_uint32(xdr, create->ftype); 1229 1230 switch (create->ftype) { 1231 case NF4LNK: 1232 p = reserve_space(xdr, 4); 1233 *p = cpu_to_be32(create->u.symlink.len); 1234 xdr_write_pages(xdr, create->u.symlink.pages, 0, 1235 create->u.symlink.len); 1236 xdr->buf->flags |= XDRBUF_WRITE; 1237 break; 1238 1239 case NF4BLK: case NF4CHR: 1240 p = reserve_space(xdr, 8); 1241 *p++ = cpu_to_be32(create->u.device.specdata1); 1242 *p = cpu_to_be32(create->u.device.specdata2); 1243 break; 1244 1245 default: 1246 break; 1247 } 1248 1249 encode_string(xdr, create->name->len, create->name->name); 1250 encode_attrs(xdr, create->attrs, create->label, &create->umask, 1251 create->server, create->server->attr_bitmask); 1252} 1253 1254static void encode_getattr(struct xdr_stream *xdr, 1255 const __u32 *bitmap, const __u32 *mask, size_t len, 1256 struct compound_hdr *hdr) 1257{ 1258 __u32 masked_bitmap[nfs4_fattr_bitmap_maxsz]; 1259 1260 encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr); 1261 if (mask) { 1262 if (WARN_ON_ONCE(len > ARRAY_SIZE(masked_bitmap))) 1263 len = ARRAY_SIZE(masked_bitmap); 1264 len = mask_bitmap4(bitmap, mask, masked_bitmap, len); 1265 bitmap = masked_bitmap; 1266 } 1267 xdr_encode_bitmap4(xdr, bitmap, len); 1268} 1269 1270static void encode_getfattr(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr) 1271{ 1272 encode_getattr(xdr, nfs4_fattr_bitmap, bitmask, 1273 ARRAY_SIZE(nfs4_fattr_bitmap), hdr); 1274} 1275 1276static void encode_getfattr_open(struct xdr_stream *xdr, const u32 *bitmask, 1277 const u32 *open_bitmap, 1278 struct compound_hdr *hdr) 1279{ 1280 encode_getattr(xdr, open_bitmap, bitmask, 3, hdr); 1281} 1282 1283static void encode_fsinfo(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr) 1284{ 1285 encode_getattr(xdr, nfs4_fsinfo_bitmap, bitmask, 1286 ARRAY_SIZE(nfs4_fsinfo_bitmap), hdr); 1287} 1288 1289static void encode_fs_locations(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr) 1290{ 1291 encode_getattr(xdr, nfs4_fs_locations_bitmap, bitmask, 1292 ARRAY_SIZE(nfs4_fs_locations_bitmap), hdr); 1293} 1294 1295static void encode_getfh(struct xdr_stream *xdr, struct compound_hdr *hdr) 1296{ 1297 encode_op_hdr(xdr, OP_GETFH, decode_getfh_maxsz, hdr); 1298} 1299 1300static void encode_link(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr) 1301{ 1302 encode_op_hdr(xdr, OP_LINK, decode_link_maxsz, hdr); 1303 encode_string(xdr, name->len, name->name); 1304} 1305 1306static inline int nfs4_lock_type(struct file_lock *fl, int block) 1307{ 1308 if (lock_is_read(fl)) 1309 return block ? NFS4_READW_LT : NFS4_READ_LT; 1310 return block ? NFS4_WRITEW_LT : NFS4_WRITE_LT; 1311} 1312 1313static inline uint64_t nfs4_lock_length(struct file_lock *fl) 1314{ 1315 if (fl->fl_end == OFFSET_MAX) 1316 return ~(uint64_t)0; 1317 return fl->fl_end - fl->fl_start + 1; 1318} 1319 1320static void encode_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner) 1321{ 1322 __be32 *p; 1323 1324 p = reserve_space(xdr, 32); 1325 p = xdr_encode_hyper(p, lowner->clientid); 1326 *p++ = cpu_to_be32(20); 1327 p = xdr_encode_opaque_fixed(p, "lock id:", 8); 1328 *p++ = cpu_to_be32(lowner->s_dev); 1329 xdr_encode_hyper(p, lowner->id); 1330} 1331 1332/* 1333 * opcode,type,reclaim,offset,length,new_lock_owner = 32 1334 * open_seqid,open_stateid,lock_seqid,lock_owner.clientid, lock_owner.id = 40 1335 */ 1336static void encode_lock(struct xdr_stream *xdr, const struct nfs_lock_args *args, struct compound_hdr *hdr) 1337{ 1338 __be32 *p; 1339 1340 encode_op_hdr(xdr, OP_LOCK, decode_lock_maxsz, hdr); 1341 p = reserve_space(xdr, 28); 1342 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, args->block)); 1343 *p++ = cpu_to_be32(args->reclaim); 1344 p = xdr_encode_hyper(p, args->fl->fl_start); 1345 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl)); 1346 *p = cpu_to_be32(args->new_lock_owner); 1347 if (args->new_lock_owner){ 1348 encode_nfs4_seqid(xdr, args->open_seqid); 1349 encode_nfs4_stateid(xdr, &args->open_stateid); 1350 encode_nfs4_seqid(xdr, args->lock_seqid); 1351 encode_lockowner(xdr, &args->lock_owner); 1352 } 1353 else { 1354 encode_nfs4_stateid(xdr, &args->lock_stateid); 1355 encode_nfs4_seqid(xdr, args->lock_seqid); 1356 } 1357} 1358 1359static void encode_lockt(struct xdr_stream *xdr, const struct nfs_lockt_args *args, struct compound_hdr *hdr) 1360{ 1361 __be32 *p; 1362 1363 encode_op_hdr(xdr, OP_LOCKT, decode_lockt_maxsz, hdr); 1364 p = reserve_space(xdr, 20); 1365 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, 0)); 1366 p = xdr_encode_hyper(p, args->fl->fl_start); 1367 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl)); 1368 encode_lockowner(xdr, &args->lock_owner); 1369} 1370 1371static void encode_locku(struct xdr_stream *xdr, const struct nfs_locku_args *args, struct compound_hdr *hdr) 1372{ 1373 __be32 *p; 1374 1375 encode_op_hdr(xdr, OP_LOCKU, decode_locku_maxsz, hdr); 1376 encode_uint32(xdr, nfs4_lock_type(args->fl, 0)); 1377 encode_nfs4_seqid(xdr, args->seqid); 1378 encode_nfs4_stateid(xdr, &args->stateid); 1379 p = reserve_space(xdr, 16); 1380 p = xdr_encode_hyper(p, args->fl->fl_start); 1381 xdr_encode_hyper(p, nfs4_lock_length(args->fl)); 1382} 1383 1384static void encode_release_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner, struct compound_hdr *hdr) 1385{ 1386 encode_op_hdr(xdr, OP_RELEASE_LOCKOWNER, decode_release_lockowner_maxsz, hdr); 1387 encode_lockowner(xdr, lowner); 1388} 1389 1390static void encode_lookup(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr) 1391{ 1392 encode_op_hdr(xdr, OP_LOOKUP, decode_lookup_maxsz, hdr); 1393 encode_string(xdr, name->len, name->name); 1394} 1395 1396static void encode_lookupp(struct xdr_stream *xdr, struct compound_hdr *hdr) 1397{ 1398 encode_op_hdr(xdr, OP_LOOKUPP, decode_lookupp_maxsz, hdr); 1399} 1400 1401static void encode_share_access(struct xdr_stream *xdr, u32 share_access) 1402{ 1403 __be32 *p; 1404 1405 p = reserve_space(xdr, 8); 1406 *p++ = cpu_to_be32(share_access); 1407 *p = cpu_to_be32(0); /* for linux, share_deny = 0 always */ 1408} 1409 1410static inline void encode_openhdr(struct xdr_stream *xdr, const struct nfs_openargs *arg) 1411{ 1412 __be32 *p; 1413 /* 1414 * opcode 4, seqid 4, share_access 4, share_deny 4, clientid 8, ownerlen 4, 1415 * owner 4 = 32 1416 */ 1417 encode_nfs4_seqid(xdr, arg->seqid); 1418 encode_share_access(xdr, arg->share_access); 1419 p = reserve_space(xdr, 36); 1420 p = xdr_encode_hyper(p, arg->clientid); 1421 *p++ = cpu_to_be32(24); 1422 p = xdr_encode_opaque_fixed(p, "open id:", 8); 1423 *p++ = cpu_to_be32(arg->server->s_dev); 1424 *p++ = cpu_to_be32(arg->id.uniquifier); 1425 xdr_encode_hyper(p, arg->id.create_time); 1426} 1427 1428static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_openargs *arg) 1429{ 1430 __be32 *p; 1431 1432 p = reserve_space(xdr, 4); 1433 switch(arg->createmode) { 1434 case NFS4_CREATE_UNCHECKED: 1435 *p = cpu_to_be32(NFS4_CREATE_UNCHECKED); 1436 encode_attrs(xdr, arg->u.attrs, arg->label, &arg->umask, 1437 arg->server, arg->server->attr_bitmask); 1438 break; 1439 case NFS4_CREATE_GUARDED: 1440 *p = cpu_to_be32(NFS4_CREATE_GUARDED); 1441 encode_attrs(xdr, arg->u.attrs, arg->label, &arg->umask, 1442 arg->server, arg->server->attr_bitmask); 1443 break; 1444 case NFS4_CREATE_EXCLUSIVE: 1445 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE); 1446 encode_nfs4_verifier(xdr, &arg->u.verifier); 1447 break; 1448 case NFS4_CREATE_EXCLUSIVE4_1: 1449 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE4_1); 1450 encode_nfs4_verifier(xdr, &arg->u.verifier); 1451 encode_attrs(xdr, arg->u.attrs, arg->label, &arg->umask, 1452 arg->server, arg->server->exclcreat_bitmask); 1453 } 1454} 1455 1456static void encode_opentype(struct xdr_stream *xdr, const struct nfs_openargs *arg) 1457{ 1458 __be32 *p; 1459 1460 p = reserve_space(xdr, 4); 1461 switch (arg->open_flags & O_CREAT) { 1462 case 0: 1463 *p = cpu_to_be32(NFS4_OPEN_NOCREATE); 1464 break; 1465 default: 1466 *p = cpu_to_be32(NFS4_OPEN_CREATE); 1467 encode_createmode(xdr, arg); 1468 } 1469} 1470 1471static inline void encode_delegation_type(struct xdr_stream *xdr, fmode_t delegation_type) 1472{ 1473 __be32 *p; 1474 1475 p = reserve_space(xdr, 4); 1476 switch (delegation_type) { 1477 case 0: 1478 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_NONE); 1479 break; 1480 case FMODE_READ: 1481 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_READ); 1482 break; 1483 case FMODE_WRITE|FMODE_READ: 1484 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_WRITE); 1485 break; 1486 default: 1487 BUG(); 1488 } 1489} 1490 1491static inline void encode_claim_null(struct xdr_stream *xdr, const struct qstr *name) 1492{ 1493 __be32 *p; 1494 1495 p = reserve_space(xdr, 4); 1496 *p = cpu_to_be32(NFS4_OPEN_CLAIM_NULL); 1497 encode_string(xdr, name->len, name->name); 1498} 1499 1500static inline void encode_claim_previous(struct xdr_stream *xdr, fmode_t type) 1501{ 1502 __be32 *p; 1503 1504 p = reserve_space(xdr, 4); 1505 *p = cpu_to_be32(NFS4_OPEN_CLAIM_PREVIOUS); 1506 encode_delegation_type(xdr, type); 1507} 1508 1509static inline void encode_claim_delegate_cur(struct xdr_stream *xdr, const struct qstr *name, const nfs4_stateid *stateid) 1510{ 1511 __be32 *p; 1512 1513 p = reserve_space(xdr, 4); 1514 *p = cpu_to_be32(NFS4_OPEN_CLAIM_DELEGATE_CUR); 1515 encode_nfs4_stateid(xdr, stateid); 1516 encode_string(xdr, name->len, name->name); 1517} 1518 1519static inline void encode_claim_fh(struct xdr_stream *xdr) 1520{ 1521 __be32 *p; 1522 1523 p = reserve_space(xdr, 4); 1524 *p = cpu_to_be32(NFS4_OPEN_CLAIM_FH); 1525} 1526 1527static inline void encode_claim_delegate_cur_fh(struct xdr_stream *xdr, const nfs4_stateid *stateid) 1528{ 1529 __be32 *p; 1530 1531 p = reserve_space(xdr, 4); 1532 *p = cpu_to_be32(NFS4_OPEN_CLAIM_DELEG_CUR_FH); 1533 encode_nfs4_stateid(xdr, stateid); 1534} 1535 1536static void encode_open(struct xdr_stream *xdr, const struct nfs_openargs *arg, struct compound_hdr *hdr) 1537{ 1538 encode_op_hdr(xdr, OP_OPEN, decode_open_maxsz, hdr); 1539 encode_openhdr(xdr, arg); 1540 encode_opentype(xdr, arg); 1541 switch (arg->claim) { 1542 case NFS4_OPEN_CLAIM_NULL: 1543 encode_claim_null(xdr, arg->name); 1544 break; 1545 case NFS4_OPEN_CLAIM_PREVIOUS: 1546 encode_claim_previous(xdr, arg->u.delegation_type); 1547 break; 1548 case NFS4_OPEN_CLAIM_DELEGATE_CUR: 1549 encode_claim_delegate_cur(xdr, arg->name, &arg->u.delegation); 1550 break; 1551 case NFS4_OPEN_CLAIM_FH: 1552 encode_claim_fh(xdr); 1553 break; 1554 case NFS4_OPEN_CLAIM_DELEG_CUR_FH: 1555 encode_claim_delegate_cur_fh(xdr, &arg->u.delegation); 1556 break; 1557 default: 1558 BUG(); 1559 } 1560} 1561 1562static void encode_open_confirm(struct xdr_stream *xdr, const struct nfs_open_confirmargs *arg, struct compound_hdr *hdr) 1563{ 1564 encode_op_hdr(xdr, OP_OPEN_CONFIRM, decode_open_confirm_maxsz, hdr); 1565 encode_nfs4_stateid(xdr, arg->stateid); 1566 encode_nfs4_seqid(xdr, arg->seqid); 1567} 1568 1569static void encode_open_downgrade(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr) 1570{ 1571 encode_op_hdr(xdr, OP_OPEN_DOWNGRADE, decode_open_downgrade_maxsz, hdr); 1572 encode_nfs4_stateid(xdr, &arg->stateid); 1573 encode_nfs4_seqid(xdr, arg->seqid); 1574 encode_share_access(xdr, arg->share_access); 1575} 1576 1577static void 1578encode_putfh(struct xdr_stream *xdr, const struct nfs_fh *fh, struct compound_hdr *hdr) 1579{ 1580 encode_op_hdr(xdr, OP_PUTFH, decode_putfh_maxsz, hdr); 1581 encode_string(xdr, fh->size, fh->data); 1582} 1583 1584static void encode_putrootfh(struct xdr_stream *xdr, struct compound_hdr *hdr) 1585{ 1586 encode_op_hdr(xdr, OP_PUTROOTFH, decode_putrootfh_maxsz, hdr); 1587} 1588 1589static void encode_read(struct xdr_stream *xdr, const struct nfs_pgio_args *args, 1590 struct compound_hdr *hdr) 1591{ 1592 __be32 *p; 1593 1594 encode_op_hdr(xdr, OP_READ, decode_read_maxsz, hdr); 1595 encode_nfs4_stateid(xdr, &args->stateid); 1596 1597 p = reserve_space(xdr, 12); 1598 p = xdr_encode_hyper(p, args->offset); 1599 *p = cpu_to_be32(args->count); 1600} 1601 1602static void encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg *readdir, struct rpc_rqst *req, struct compound_hdr *hdr) 1603{ 1604 uint32_t attrs[3] = { 1605 FATTR4_WORD0_TYPE 1606 | FATTR4_WORD0_RDATTR_ERROR, 1607 FATTR4_WORD1_MOUNTED_ON_FILEID, 1608 }; 1609 uint32_t dircount = readdir->count; 1610 uint32_t maxcount = readdir->count; 1611 __be32 *p, verf[2]; 1612 uint32_t attrlen = 0; 1613 unsigned int i; 1614 1615 if (readdir->plus) { 1616 attrs[0] |= FATTR4_WORD0_CHANGE 1617 | FATTR4_WORD0_SIZE 1618 | FATTR4_WORD0_FSID 1619 | FATTR4_WORD0_FILEHANDLE 1620 | FATTR4_WORD0_FILEID; 1621 attrs[1] |= FATTR4_WORD1_MODE 1622 | FATTR4_WORD1_NUMLINKS 1623 | FATTR4_WORD1_OWNER 1624 | FATTR4_WORD1_OWNER_GROUP 1625 | FATTR4_WORD1_RAWDEV 1626 | FATTR4_WORD1_SPACE_USED 1627 | FATTR4_WORD1_TIME_ACCESS 1628 | FATTR4_WORD1_TIME_METADATA 1629 | FATTR4_WORD1_TIME_MODIFY; 1630 attrs[2] |= FATTR4_WORD2_SECURITY_LABEL; 1631 } 1632 /* Use mounted_on_fileid only if the server supports it */ 1633 if (!(readdir->bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)) 1634 attrs[0] |= FATTR4_WORD0_FILEID; 1635 for (i = 0; i < ARRAY_SIZE(attrs); i++) { 1636 attrs[i] &= readdir->bitmask[i]; 1637 if (attrs[i] != 0) 1638 attrlen = i+1; 1639 } 1640 1641 encode_op_hdr(xdr, OP_READDIR, decode_readdir_maxsz, hdr); 1642 encode_uint64(xdr, readdir->cookie); 1643 encode_nfs4_verifier(xdr, &readdir->verifier); 1644 p = reserve_space(xdr, 12 + (attrlen << 2)); 1645 *p++ = cpu_to_be32(dircount); 1646 *p++ = cpu_to_be32(maxcount); 1647 *p++ = cpu_to_be32(attrlen); 1648 for (i = 0; i < attrlen; i++) 1649 *p++ = cpu_to_be32(attrs[i]); 1650 memcpy(verf, readdir->verifier.data, sizeof(verf)); 1651 1652 dprintk("%s: cookie = %llu, verifier = %08x:%08x, bitmap = %08x:%08x:%08x\n", 1653 __func__, 1654 (unsigned long long)readdir->cookie, 1655 verf[0], verf[1], 1656 attrs[0] & readdir->bitmask[0], 1657 attrs[1] & readdir->bitmask[1], 1658 attrs[2] & readdir->bitmask[2]); 1659} 1660 1661static void encode_readlink(struct xdr_stream *xdr, const struct nfs4_readlink *readlink, struct rpc_rqst *req, struct compound_hdr *hdr) 1662{ 1663 encode_op_hdr(xdr, OP_READLINK, decode_readlink_maxsz, hdr); 1664} 1665 1666static void encode_remove(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr) 1667{ 1668 encode_op_hdr(xdr, OP_REMOVE, decode_remove_maxsz, hdr); 1669 encode_string(xdr, name->len, name->name); 1670} 1671 1672static void encode_rename(struct xdr_stream *xdr, const struct qstr *oldname, const struct qstr *newname, struct compound_hdr *hdr) 1673{ 1674 encode_op_hdr(xdr, OP_RENAME, decode_rename_maxsz, hdr); 1675 encode_string(xdr, oldname->len, oldname->name); 1676 encode_string(xdr, newname->len, newname->name); 1677} 1678 1679static void encode_renew(struct xdr_stream *xdr, clientid4 clid, 1680 struct compound_hdr *hdr) 1681{ 1682 encode_op_hdr(xdr, OP_RENEW, decode_renew_maxsz, hdr); 1683 encode_uint64(xdr, clid); 1684} 1685 1686static void 1687encode_restorefh(struct xdr_stream *xdr, struct compound_hdr *hdr) 1688{ 1689 encode_op_hdr(xdr, OP_RESTOREFH, decode_restorefh_maxsz, hdr); 1690} 1691 1692static void nfs4_acltype_to_bitmap(enum nfs4_acl_type type, __u32 bitmap[2]) 1693{ 1694 switch (type) { 1695 default: 1696 bitmap[0] = FATTR4_WORD0_ACL; 1697 bitmap[1] = 0; 1698 break; 1699 case NFS4ACL_DACL: 1700 bitmap[0] = 0; 1701 bitmap[1] = FATTR4_WORD1_DACL; 1702 break; 1703 case NFS4ACL_SACL: 1704 bitmap[0] = 0; 1705 bitmap[1] = FATTR4_WORD1_SACL; 1706 } 1707} 1708 1709static void encode_setacl(struct xdr_stream *xdr, 1710 const struct nfs_setaclargs *arg, 1711 struct compound_hdr *hdr) 1712{ 1713 __u32 bitmap[2]; 1714 1715 nfs4_acltype_to_bitmap(arg->acl_type, bitmap); 1716 1717 encode_op_hdr(xdr, OP_SETATTR, decode_setacl_maxsz, hdr); 1718 encode_nfs4_stateid(xdr, &zero_stateid); 1719 xdr_encode_bitmap4(xdr, bitmap, ARRAY_SIZE(bitmap)); 1720 encode_uint32(xdr, arg->acl_len); 1721 xdr_write_pages(xdr, arg->acl_pages, 0, arg->acl_len); 1722} 1723 1724static void 1725encode_savefh(struct xdr_stream *xdr, struct compound_hdr *hdr) 1726{ 1727 encode_op_hdr(xdr, OP_SAVEFH, decode_savefh_maxsz, hdr); 1728} 1729 1730static void encode_setattr(struct xdr_stream *xdr, const struct nfs_setattrargs *arg, const struct nfs_server *server, struct compound_hdr *hdr) 1731{ 1732 encode_op_hdr(xdr, OP_SETATTR, decode_setattr_maxsz, hdr); 1733 encode_nfs4_stateid(xdr, &arg->stateid); 1734 encode_attrs(xdr, arg->iap, arg->label, NULL, server, 1735 server->attr_bitmask); 1736} 1737 1738static void encode_setclientid(struct xdr_stream *xdr, const struct nfs4_setclientid *setclientid, struct compound_hdr *hdr) 1739{ 1740 __be32 *p; 1741 1742 encode_op_hdr(xdr, OP_SETCLIENTID, decode_setclientid_maxsz, hdr); 1743 encode_nfs4_verifier(xdr, setclientid->sc_verifier); 1744 1745 encode_string(xdr, strlen(setclientid->sc_clnt->cl_owner_id), 1746 setclientid->sc_clnt->cl_owner_id); 1747 p = reserve_space(xdr, 4); 1748 *p = cpu_to_be32(setclientid->sc_prog); 1749 encode_string(xdr, setclientid->sc_netid_len, setclientid->sc_netid); 1750 encode_string(xdr, setclientid->sc_uaddr_len, setclientid->sc_uaddr); 1751 p = reserve_space(xdr, 4); 1752 *p = cpu_to_be32(setclientid->sc_clnt->cl_cb_ident); 1753} 1754 1755static void encode_setclientid_confirm(struct xdr_stream *xdr, const struct nfs4_setclientid_res *arg, struct compound_hdr *hdr) 1756{ 1757 encode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM, 1758 decode_setclientid_confirm_maxsz, hdr); 1759 encode_uint64(xdr, arg->clientid); 1760 encode_nfs4_verifier(xdr, &arg->confirm); 1761} 1762 1763static void encode_write(struct xdr_stream *xdr, const struct nfs_pgio_args *args, 1764 struct compound_hdr *hdr) 1765{ 1766 __be32 *p; 1767 1768 encode_op_hdr(xdr, OP_WRITE, decode_write_maxsz, hdr); 1769 encode_nfs4_stateid(xdr, &args->stateid); 1770 1771 p = reserve_space(xdr, 16); 1772 p = xdr_encode_hyper(p, args->offset); 1773 *p++ = cpu_to_be32(args->stable); 1774 *p = cpu_to_be32(args->count); 1775 1776 xdr_write_pages(xdr, args->pages, args->pgbase, args->count); 1777} 1778 1779static void encode_delegreturn(struct xdr_stream *xdr, const nfs4_stateid *stateid, struct compound_hdr *hdr) 1780{ 1781 encode_op_hdr(xdr, OP_DELEGRETURN, decode_delegreturn_maxsz, hdr); 1782 encode_nfs4_stateid(xdr, stateid); 1783} 1784 1785static void encode_secinfo(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr) 1786{ 1787 encode_op_hdr(xdr, OP_SECINFO, decode_secinfo_maxsz, hdr); 1788 encode_string(xdr, name->len, name->name); 1789} 1790 1791#if defined(CONFIG_NFS_V4_1) 1792/* NFSv4.1 operations */ 1793static void encode_bind_conn_to_session(struct xdr_stream *xdr, 1794 const struct nfs41_bind_conn_to_session_args *args, 1795 struct compound_hdr *hdr) 1796{ 1797 __be32 *p; 1798 1799 encode_op_hdr(xdr, OP_BIND_CONN_TO_SESSION, 1800 decode_bind_conn_to_session_maxsz, hdr); 1801 encode_opaque_fixed(xdr, args->sessionid.data, NFS4_MAX_SESSIONID_LEN); 1802 p = xdr_reserve_space(xdr, 8); 1803 *p++ = cpu_to_be32(args->dir); 1804 *p = (args->use_conn_in_rdma_mode) ? cpu_to_be32(1) : cpu_to_be32(0); 1805} 1806 1807static void encode_op_map(struct xdr_stream *xdr, const struct nfs4_op_map *op_map) 1808{ 1809 unsigned int i; 1810 encode_uint32(xdr, NFS4_OP_MAP_NUM_WORDS); 1811 for (i = 0; i < NFS4_OP_MAP_NUM_WORDS; i++) 1812 encode_uint32(xdr, op_map->u.words[i]); 1813} 1814 1815static void encode_exchange_id(struct xdr_stream *xdr, 1816 const struct nfs41_exchange_id_args *args, 1817 struct compound_hdr *hdr) 1818{ 1819 __be32 *p; 1820 char impl_name[IMPL_NAME_LIMIT]; 1821 int len = 0; 1822 1823 encode_op_hdr(xdr, OP_EXCHANGE_ID, decode_exchange_id_maxsz, hdr); 1824 encode_nfs4_verifier(xdr, &args->verifier); 1825 1826 encode_string(xdr, strlen(args->client->cl_owner_id), 1827 args->client->cl_owner_id); 1828 1829 encode_uint32(xdr, args->flags); 1830 encode_uint32(xdr, args->state_protect.how); 1831 1832 switch (args->state_protect.how) { 1833 case SP4_NONE: 1834 break; 1835 case SP4_MACH_CRED: 1836 encode_op_map(xdr, &args->state_protect.enforce); 1837 encode_op_map(xdr, &args->state_protect.allow); 1838 break; 1839 default: 1840 WARN_ON_ONCE(1); 1841 break; 1842 } 1843 1844 if (send_implementation_id && 1845 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN) > 1 && 1846 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN) 1847 <= sizeof(impl_name) + 1) 1848 len = snprintf(impl_name, sizeof(impl_name), "%s %s %s %s", 1849 utsname()->sysname, utsname()->release, 1850 utsname()->version, utsname()->machine); 1851 1852 if (len > 0) { 1853 encode_uint32(xdr, 1); /* implementation id array length=1 */ 1854 1855 encode_string(xdr, 1856 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN) - 1, 1857 CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN); 1858 encode_string(xdr, len, impl_name); 1859 /* just send zeros for nii_date - the date is in nii_name */ 1860 p = reserve_space(xdr, 12); 1861 p = xdr_encode_hyper(p, 0); 1862 *p = cpu_to_be32(0); 1863 } else 1864 encode_uint32(xdr, 0); /* implementation id array length=0 */ 1865} 1866 1867static void encode_create_session(struct xdr_stream *xdr, 1868 const struct nfs41_create_session_args *args, 1869 struct compound_hdr *hdr) 1870{ 1871 __be32 *p; 1872 struct nfs_client *clp = args->client; 1873 struct rpc_clnt *clnt = clp->cl_rpcclient; 1874 struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id); 1875 u32 max_resp_sz_cached; 1876 1877 /* 1878 * Assumes OPEN is the biggest non-idempotent compound. 1879 * 2 is the verifier. 1880 */ 1881 max_resp_sz_cached = (NFS4_dec_open_sz + RPC_REPHDRSIZE + 2) 1882 * XDR_UNIT + RPC_MAX_AUTH_SIZE; 1883 1884 encode_op_hdr(xdr, OP_CREATE_SESSION, decode_create_session_maxsz, hdr); 1885 p = reserve_space(xdr, 16 + 2*28 + 20 + clnt->cl_nodelen + 12); 1886 p = xdr_encode_hyper(p, args->clientid); 1887 *p++ = cpu_to_be32(args->seqid); /*Sequence id */ 1888 *p++ = cpu_to_be32(args->flags); /*flags */ 1889 1890 /* Fore Channel */ 1891 *p++ = cpu_to_be32(0); /* header padding size */ 1892 *p++ = cpu_to_be32(args->fc_attrs.max_rqst_sz); /* max req size */ 1893 *p++ = cpu_to_be32(args->fc_attrs.max_resp_sz); /* max resp size */ 1894 *p++ = cpu_to_be32(max_resp_sz_cached); /* Max resp sz cached */ 1895 *p++ = cpu_to_be32(args->fc_attrs.max_ops); /* max operations */ 1896 *p++ = cpu_to_be32(args->fc_attrs.max_reqs); /* max requests */ 1897 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */ 1898 1899 /* Back Channel */ 1900 *p++ = cpu_to_be32(0); /* header padding size */ 1901 *p++ = cpu_to_be32(args->bc_attrs.max_rqst_sz); /* max req size */ 1902 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz); /* max resp size */ 1903 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz_cached); /* Max resp sz cached */ 1904 *p++ = cpu_to_be32(args->bc_attrs.max_ops); /* max operations */ 1905 *p++ = cpu_to_be32(args->bc_attrs.max_reqs); /* max requests */ 1906 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */ 1907 1908 *p++ = cpu_to_be32(args->cb_program); /* cb_program */ 1909 *p++ = cpu_to_be32(1); 1910 *p++ = cpu_to_be32(RPC_AUTH_UNIX); /* auth_sys */ 1911 1912 /* authsys_parms rfc1831 */ 1913 *p++ = cpu_to_be32(ktime_to_ns(nn->boot_time)); /* stamp */ 1914 p = xdr_encode_array(p, clnt->cl_nodename, clnt->cl_nodelen); 1915 *p++ = cpu_to_be32(0); /* UID */ 1916 *p++ = cpu_to_be32(0); /* GID */ 1917 *p = cpu_to_be32(0); /* No more gids */ 1918} 1919 1920static void encode_destroy_session(struct xdr_stream *xdr, 1921 const struct nfs4_session *session, 1922 struct compound_hdr *hdr) 1923{ 1924 encode_op_hdr(xdr, OP_DESTROY_SESSION, decode_destroy_session_maxsz, hdr); 1925 encode_opaque_fixed(xdr, session->sess_id.data, NFS4_MAX_SESSIONID_LEN); 1926} 1927 1928static void encode_destroy_clientid(struct xdr_stream *xdr, 1929 uint64_t clientid, 1930 struct compound_hdr *hdr) 1931{ 1932 encode_op_hdr(xdr, OP_DESTROY_CLIENTID, decode_destroy_clientid_maxsz, hdr); 1933 encode_uint64(xdr, clientid); 1934} 1935 1936static void encode_reclaim_complete(struct xdr_stream *xdr, 1937 const struct nfs41_reclaim_complete_args *args, 1938 struct compound_hdr *hdr) 1939{ 1940 encode_op_hdr(xdr, OP_RECLAIM_COMPLETE, decode_reclaim_complete_maxsz, hdr); 1941 encode_uint32(xdr, args->one_fs); 1942} 1943#endif /* CONFIG_NFS_V4_1 */ 1944 1945static void encode_sequence(struct xdr_stream *xdr, 1946 const struct nfs4_sequence_args *args, 1947 struct compound_hdr *hdr) 1948{ 1949#if defined(CONFIG_NFS_V4_1) 1950 struct nfs4_session *session; 1951 struct nfs4_slot_table *tp; 1952 struct nfs4_slot *slot = args->sa_slot; 1953 __be32 *p; 1954 1955 tp = slot->table; 1956 session = tp->session; 1957 if (!session) 1958 return; 1959 1960 encode_op_hdr(xdr, OP_SEQUENCE, decode_sequence_maxsz, hdr); 1961 1962 /* 1963 * Sessionid + seqid + slotid + max slotid + cache_this 1964 */ 1965 dprintk("%s: sessionid=%u:%u:%u:%u seqid=%d slotid=%d " 1966 "max_slotid=%d cache_this=%d\n", 1967 __func__, 1968 ((u32 *)session->sess_id.data)[0], 1969 ((u32 *)session->sess_id.data)[1], 1970 ((u32 *)session->sess_id.data)[2], 1971 ((u32 *)session->sess_id.data)[3], 1972 slot->seq_nr, slot->slot_nr, 1973 tp->highest_used_slotid, args->sa_cache_this); 1974 p = reserve_space(xdr, NFS4_MAX_SESSIONID_LEN + 16); 1975 p = xdr_encode_opaque_fixed(p, session->sess_id.data, NFS4_MAX_SESSIONID_LEN); 1976 *p++ = cpu_to_be32(slot->seq_nr); 1977 *p++ = cpu_to_be32(slot->slot_nr); 1978 *p++ = cpu_to_be32(tp->highest_used_slotid); 1979 *p = cpu_to_be32(args->sa_cache_this); 1980#endif /* CONFIG_NFS_V4_1 */ 1981} 1982 1983#ifdef CONFIG_NFS_V4_1 1984static void 1985encode_getdeviceinfo(struct xdr_stream *xdr, 1986 const struct nfs4_getdeviceinfo_args *args, 1987 struct compound_hdr *hdr) 1988{ 1989 __be32 *p; 1990 1991 encode_op_hdr(xdr, OP_GETDEVICEINFO, decode_getdeviceinfo_maxsz, hdr); 1992 p = reserve_space(xdr, NFS4_DEVICEID4_SIZE + 4 + 4); 1993 p = xdr_encode_opaque_fixed(p, args->pdev->dev_id.data, 1994 NFS4_DEVICEID4_SIZE); 1995 *p++ = cpu_to_be32(args->pdev->layout_type); 1996 *p++ = cpu_to_be32(args->pdev->maxcount); /* gdia_maxcount */ 1997 1998 p = reserve_space(xdr, 4 + 4); 1999 *p++ = cpu_to_be32(1); /* bitmap length */ 2000 *p++ = cpu_to_be32(args->notify_types); 2001} 2002 2003static void 2004encode_layoutget(struct xdr_stream *xdr, 2005 const struct nfs4_layoutget_args *args, 2006 struct compound_hdr *hdr) 2007{ 2008 __be32 *p; 2009 2010 encode_op_hdr(xdr, OP_LAYOUTGET, decode_layoutget_maxsz, hdr); 2011 p = reserve_space(xdr, 36); 2012 *p++ = cpu_to_be32(0); /* Signal layout available */ 2013 *p++ = cpu_to_be32(args->type); 2014 *p++ = cpu_to_be32(args->range.iomode); 2015 p = xdr_encode_hyper(p, args->range.offset); 2016 p = xdr_encode_hyper(p, args->range.length); 2017 p = xdr_encode_hyper(p, args->minlength); 2018 encode_nfs4_stateid(xdr, &args->stateid); 2019 encode_uint32(xdr, args->maxcount); 2020 2021 dprintk("%s: 1st type:0x%x iomode:%d off:%lu len:%lu mc:%d\n", 2022 __func__, 2023 args->type, 2024 args->range.iomode, 2025 (unsigned long)args->range.offset, 2026 (unsigned long)args->range.length, 2027 args->maxcount); 2028} 2029 2030static int 2031encode_layoutcommit(struct xdr_stream *xdr, 2032 struct inode *inode, 2033 const struct nfs4_layoutcommit_args *args, 2034 struct compound_hdr *hdr) 2035{ 2036 __be32 *p; 2037 2038 dprintk("%s: lbw: %llu type: %d\n", __func__, args->lastbytewritten, 2039 NFS_SERVER(args->inode)->pnfs_curr_ld->id); 2040 2041 encode_op_hdr(xdr, OP_LAYOUTCOMMIT, decode_layoutcommit_maxsz, hdr); 2042 p = reserve_space(xdr, 20); 2043 /* Only whole file layouts */ 2044 p = xdr_encode_hyper(p, 0); /* offset */ 2045 p = xdr_encode_hyper(p, args->lastbytewritten + 1); /* length */ 2046 *p = cpu_to_be32(0); /* reclaim */ 2047 encode_nfs4_stateid(xdr, &args->stateid); 2048 if (args->lastbytewritten != U64_MAX) { 2049 p = reserve_space(xdr, 20); 2050 *p++ = cpu_to_be32(1); /* newoffset = TRUE */ 2051 p = xdr_encode_hyper(p, args->lastbytewritten); 2052 } else { 2053 p = reserve_space(xdr, 12); 2054 *p++ = cpu_to_be32(0); /* newoffset = FALSE */ 2055 } 2056 *p++ = cpu_to_be32(0); /* Never send time_modify_changed */ 2057 *p++ = cpu_to_be32(NFS_SERVER(args->inode)->pnfs_curr_ld->id);/* type */ 2058 2059 encode_uint32(xdr, args->layoutupdate_len); 2060 if (args->layoutupdate_pages) 2061 xdr_write_pages(xdr, args->layoutupdate_pages, 0, 2062 args->layoutupdate_len); 2063 2064 return 0; 2065} 2066 2067static void 2068encode_layoutreturn(struct xdr_stream *xdr, 2069 const struct nfs4_layoutreturn_args *args, 2070 struct compound_hdr *hdr) 2071{ 2072 __be32 *p; 2073 2074 encode_op_hdr(xdr, OP_LAYOUTRETURN, decode_layoutreturn_maxsz, hdr); 2075 p = reserve_space(xdr, 16); 2076 *p++ = cpu_to_be32(0); /* reclaim. always 0 for now */ 2077 *p++ = cpu_to_be32(args->layout_type); 2078 *p++ = cpu_to_be32(args->range.iomode); 2079 *p = cpu_to_be32(RETURN_FILE); 2080 p = reserve_space(xdr, 16); 2081 p = xdr_encode_hyper(p, args->range.offset); 2082 p = xdr_encode_hyper(p, args->range.length); 2083 spin_lock(&args->inode->i_lock); 2084 encode_nfs4_stateid(xdr, &args->stateid); 2085 spin_unlock(&args->inode->i_lock); 2086 if (args->ld_private->ops && args->ld_private->ops->encode) 2087 args->ld_private->ops->encode(xdr, args, args->ld_private); 2088 else 2089 encode_uint32(xdr, 0); 2090} 2091 2092static int 2093encode_secinfo_no_name(struct xdr_stream *xdr, 2094 const struct nfs41_secinfo_no_name_args *args, 2095 struct compound_hdr *hdr) 2096{ 2097 encode_op_hdr(xdr, OP_SECINFO_NO_NAME, decode_secinfo_no_name_maxsz, hdr); 2098 encode_uint32(xdr, args->style); 2099 return 0; 2100} 2101 2102static void encode_test_stateid(struct xdr_stream *xdr, 2103 const struct nfs41_test_stateid_args *args, 2104 struct compound_hdr *hdr) 2105{ 2106 encode_op_hdr(xdr, OP_TEST_STATEID, decode_test_stateid_maxsz, hdr); 2107 encode_uint32(xdr, 1); 2108 encode_nfs4_stateid(xdr, args->stateid); 2109} 2110 2111static void encode_free_stateid(struct xdr_stream *xdr, 2112 const struct nfs41_free_stateid_args *args, 2113 struct compound_hdr *hdr) 2114{ 2115 encode_op_hdr(xdr, OP_FREE_STATEID, decode_free_stateid_maxsz, hdr); 2116 encode_nfs4_stateid(xdr, &args->stateid); 2117} 2118#else 2119static inline void 2120encode_layoutreturn(struct xdr_stream *xdr, 2121 const struct nfs4_layoutreturn_args *args, 2122 struct compound_hdr *hdr) 2123{ 2124} 2125 2126static void 2127encode_layoutget(struct xdr_stream *xdr, 2128 const struct nfs4_layoutget_args *args, 2129 struct compound_hdr *hdr) 2130{ 2131} 2132#endif /* CONFIG_NFS_V4_1 */ 2133 2134/* 2135 * END OF "GENERIC" ENCODE ROUTINES. 2136 */ 2137 2138static u32 nfs4_xdr_minorversion(const struct nfs4_sequence_args *args) 2139{ 2140#if defined(CONFIG_NFS_V4_1) 2141 struct nfs4_session *session = args->sa_slot->table->session; 2142 if (session) 2143 return session->clp->cl_mvops->minor_version; 2144#endif /* CONFIG_NFS_V4_1 */ 2145 return 0; 2146} 2147 2148/* 2149 * Encode an ACCESS request 2150 */ 2151static void nfs4_xdr_enc_access(struct rpc_rqst *req, struct xdr_stream *xdr, 2152 const void *data) 2153{ 2154 const struct nfs4_accessargs *args = data; 2155 struct compound_hdr hdr = { 2156 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2157 }; 2158 2159 encode_compound_hdr(xdr, req, &hdr); 2160 encode_sequence(xdr, &args->seq_args, &hdr); 2161 encode_putfh(xdr, args->fh, &hdr); 2162 encode_access(xdr, args->access, &hdr); 2163 if (args->bitmask) 2164 encode_getfattr(xdr, args->bitmask, &hdr); 2165 encode_nops(&hdr); 2166} 2167 2168/* 2169 * Encode LOOKUP request 2170 */ 2171static void nfs4_xdr_enc_lookup(struct rpc_rqst *req, struct xdr_stream *xdr, 2172 const void *data) 2173{ 2174 const struct nfs4_lookup_arg *args = data; 2175 struct compound_hdr hdr = { 2176 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2177 }; 2178 2179 encode_compound_hdr(xdr, req, &hdr); 2180 encode_sequence(xdr, &args->seq_args, &hdr); 2181 encode_putfh(xdr, args->dir_fh, &hdr); 2182 encode_lookup(xdr, args->name, &hdr); 2183 encode_getfh(xdr, &hdr); 2184 encode_getfattr(xdr, args->bitmask, &hdr); 2185 encode_nops(&hdr); 2186} 2187 2188/* 2189 * Encode LOOKUPP request 2190 */ 2191static void nfs4_xdr_enc_lookupp(struct rpc_rqst *req, struct xdr_stream *xdr, 2192 const void *data) 2193{ 2194 const struct nfs4_lookupp_arg *args = data; 2195 struct compound_hdr hdr = { 2196 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2197 }; 2198 2199 encode_compound_hdr(xdr, req, &hdr); 2200 encode_sequence(xdr, &args->seq_args, &hdr); 2201 encode_putfh(xdr, args->fh, &hdr); 2202 encode_lookupp(xdr, &hdr); 2203 encode_getfh(xdr, &hdr); 2204 encode_getfattr(xdr, args->bitmask, &hdr); 2205 encode_nops(&hdr); 2206} 2207 2208/* 2209 * Encode LOOKUP_ROOT request 2210 */ 2211static void nfs4_xdr_enc_lookup_root(struct rpc_rqst *req, 2212 struct xdr_stream *xdr, 2213 const void *data) 2214{ 2215 const struct nfs4_lookup_root_arg *args = data; 2216 struct compound_hdr hdr = { 2217 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2218 }; 2219 2220 encode_compound_hdr(xdr, req, &hdr); 2221 encode_sequence(xdr, &args->seq_args, &hdr); 2222 encode_putrootfh(xdr, &hdr); 2223 encode_getfh(xdr, &hdr); 2224 encode_getfattr(xdr, args->bitmask, &hdr); 2225 encode_nops(&hdr); 2226} 2227 2228/* 2229 * Encode REMOVE request 2230 */ 2231static void nfs4_xdr_enc_remove(struct rpc_rqst *req, struct xdr_stream *xdr, 2232 const void *data) 2233{ 2234 const struct nfs_removeargs *args = data; 2235 struct compound_hdr hdr = { 2236 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2237 }; 2238 2239 encode_compound_hdr(xdr, req, &hdr); 2240 encode_sequence(xdr, &args->seq_args, &hdr); 2241 encode_putfh(xdr, args->fh, &hdr); 2242 encode_remove(xdr, &args->name, &hdr); 2243 encode_nops(&hdr); 2244} 2245 2246/* 2247 * Encode RENAME request 2248 */ 2249static void nfs4_xdr_enc_rename(struct rpc_rqst *req, struct xdr_stream *xdr, 2250 const void *data) 2251{ 2252 const struct nfs_renameargs *args = data; 2253 struct compound_hdr hdr = { 2254 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2255 }; 2256 2257 encode_compound_hdr(xdr, req, &hdr); 2258 encode_sequence(xdr, &args->seq_args, &hdr); 2259 encode_putfh(xdr, args->old_dir, &hdr); 2260 encode_savefh(xdr, &hdr); 2261 encode_putfh(xdr, args->new_dir, &hdr); 2262 encode_rename(xdr, args->old_name, args->new_name, &hdr); 2263 encode_nops(&hdr); 2264} 2265 2266/* 2267 * Encode LINK request 2268 */ 2269static void nfs4_xdr_enc_link(struct rpc_rqst *req, struct xdr_stream *xdr, 2270 const void *data) 2271{ 2272 const struct nfs4_link_arg *args = data; 2273 struct compound_hdr hdr = { 2274 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2275 }; 2276 2277 encode_compound_hdr(xdr, req, &hdr); 2278 encode_sequence(xdr, &args->seq_args, &hdr); 2279 encode_putfh(xdr, args->fh, &hdr); 2280 encode_savefh(xdr, &hdr); 2281 encode_putfh(xdr, args->dir_fh, &hdr); 2282 encode_link(xdr, args->name, &hdr); 2283 encode_restorefh(xdr, &hdr); 2284 encode_getfattr(xdr, args->bitmask, &hdr); 2285 encode_nops(&hdr); 2286} 2287 2288/* 2289 * Encode CREATE request 2290 */ 2291static void nfs4_xdr_enc_create(struct rpc_rqst *req, struct xdr_stream *xdr, 2292 const void *data) 2293{ 2294 const struct nfs4_create_arg *args = data; 2295 struct compound_hdr hdr = { 2296 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2297 }; 2298 2299 encode_compound_hdr(xdr, req, &hdr); 2300 encode_sequence(xdr, &args->seq_args, &hdr); 2301 encode_putfh(xdr, args->dir_fh, &hdr); 2302 encode_create(xdr, args, &hdr); 2303 encode_getfh(xdr, &hdr); 2304 encode_getfattr(xdr, args->bitmask, &hdr); 2305 encode_nops(&hdr); 2306} 2307 2308/* 2309 * Encode SYMLINK request 2310 */ 2311static void nfs4_xdr_enc_symlink(struct rpc_rqst *req, struct xdr_stream *xdr, 2312 const void *data) 2313{ 2314 const struct nfs4_create_arg *args = data; 2315 2316 nfs4_xdr_enc_create(req, xdr, args); 2317} 2318 2319/* 2320 * Encode GETATTR request 2321 */ 2322static void nfs4_xdr_enc_getattr(struct rpc_rqst *req, struct xdr_stream *xdr, 2323 const void *data) 2324{ 2325 const struct nfs4_getattr_arg *args = data; 2326 struct compound_hdr hdr = { 2327 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2328 }; 2329 2330 encode_compound_hdr(xdr, req, &hdr); 2331 encode_sequence(xdr, &args->seq_args, &hdr); 2332 encode_putfh(xdr, args->fh, &hdr); 2333 encode_getfattr(xdr, args->bitmask, &hdr); 2334 encode_nops(&hdr); 2335} 2336 2337/* 2338 * Encode a CLOSE request 2339 */ 2340static void nfs4_xdr_enc_close(struct rpc_rqst *req, struct xdr_stream *xdr, 2341 const void *data) 2342{ 2343 const struct nfs_closeargs *args = data; 2344 struct compound_hdr hdr = { 2345 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2346 }; 2347 2348 encode_compound_hdr(xdr, req, &hdr); 2349 encode_sequence(xdr, &args->seq_args, &hdr); 2350 encode_putfh(xdr, args->fh, &hdr); 2351 if (args->lr_args) 2352 encode_layoutreturn(xdr, args->lr_args, &hdr); 2353 if (args->bitmask != NULL) 2354 encode_getfattr(xdr, args->bitmask, &hdr); 2355 encode_close(xdr, args, &hdr); 2356 encode_nops(&hdr); 2357} 2358 2359/* 2360 * Encode an OPEN request 2361 */ 2362static void nfs4_xdr_enc_open(struct rpc_rqst *req, struct xdr_stream *xdr, 2363 const void *data) 2364{ 2365 const struct nfs_openargs *args = data; 2366 struct compound_hdr hdr = { 2367 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2368 }; 2369 2370 encode_compound_hdr(xdr, req, &hdr); 2371 encode_sequence(xdr, &args->seq_args, &hdr); 2372 encode_putfh(xdr, args->fh, &hdr); 2373 encode_open(xdr, args, &hdr); 2374 encode_getfh(xdr, &hdr); 2375 if (args->access) 2376 encode_access(xdr, args->access, &hdr); 2377 encode_getfattr_open(xdr, args->bitmask, args->open_bitmap, &hdr); 2378 if (args->lg_args) { 2379 encode_layoutget(xdr, args->lg_args, &hdr); 2380 rpc_prepare_reply_pages(req, args->lg_args->layout.pages, 0, 2381 args->lg_args->layout.pglen, 2382 hdr.replen - pagepad_maxsz); 2383 } 2384 encode_nops(&hdr); 2385} 2386 2387/* 2388 * Encode an OPEN_CONFIRM request 2389 */ 2390static void nfs4_xdr_enc_open_confirm(struct rpc_rqst *req, 2391 struct xdr_stream *xdr, 2392 const void *data) 2393{ 2394 const struct nfs_open_confirmargs *args = data; 2395 struct compound_hdr hdr = { 2396 .nops = 0, 2397 }; 2398 2399 encode_compound_hdr(xdr, req, &hdr); 2400 encode_putfh(xdr, args->fh, &hdr); 2401 encode_open_confirm(xdr, args, &hdr); 2402 encode_nops(&hdr); 2403} 2404 2405/* 2406 * Encode an OPEN request with no attributes. 2407 */ 2408static void nfs4_xdr_enc_open_noattr(struct rpc_rqst *req, 2409 struct xdr_stream *xdr, 2410 const void *data) 2411{ 2412 const struct nfs_openargs *args = data; 2413 struct compound_hdr hdr = { 2414 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2415 }; 2416 2417 encode_compound_hdr(xdr, req, &hdr); 2418 encode_sequence(xdr, &args->seq_args, &hdr); 2419 encode_putfh(xdr, args->fh, &hdr); 2420 encode_open(xdr, args, &hdr); 2421 if (args->access) 2422 encode_access(xdr, args->access, &hdr); 2423 encode_getfattr_open(xdr, args->bitmask, args->open_bitmap, &hdr); 2424 if (args->lg_args) { 2425 encode_layoutget(xdr, args->lg_args, &hdr); 2426 rpc_prepare_reply_pages(req, args->lg_args->layout.pages, 0, 2427 args->lg_args->layout.pglen, 2428 hdr.replen - pagepad_maxsz); 2429 } 2430 encode_nops(&hdr); 2431} 2432 2433/* 2434 * Encode an OPEN_DOWNGRADE request 2435 */ 2436static void nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req, 2437 struct xdr_stream *xdr, 2438 const void *data) 2439{ 2440 const struct nfs_closeargs *args = data; 2441 struct compound_hdr hdr = { 2442 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2443 }; 2444 2445 encode_compound_hdr(xdr, req, &hdr); 2446 encode_sequence(xdr, &args->seq_args, &hdr); 2447 encode_putfh(xdr, args->fh, &hdr); 2448 if (args->lr_args) 2449 encode_layoutreturn(xdr, args->lr_args, &hdr); 2450 encode_open_downgrade(xdr, args, &hdr); 2451 encode_nops(&hdr); 2452} 2453 2454/* 2455 * Encode a LOCK request 2456 */ 2457static void nfs4_xdr_enc_lock(struct rpc_rqst *req, struct xdr_stream *xdr, 2458 const void *data) 2459{ 2460 const struct nfs_lock_args *args = data; 2461 struct compound_hdr hdr = { 2462 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2463 }; 2464 2465 encode_compound_hdr(xdr, req, &hdr); 2466 encode_sequence(xdr, &args->seq_args, &hdr); 2467 encode_putfh(xdr, args->fh, &hdr); 2468 encode_lock(xdr, args, &hdr); 2469 encode_nops(&hdr); 2470} 2471 2472/* 2473 * Encode a LOCKT request 2474 */ 2475static void nfs4_xdr_enc_lockt(struct rpc_rqst *req, struct xdr_stream *xdr, 2476 const void *data) 2477{ 2478 const struct nfs_lockt_args *args = data; 2479 struct compound_hdr hdr = { 2480 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2481 }; 2482 2483 encode_compound_hdr(xdr, req, &hdr); 2484 encode_sequence(xdr, &args->seq_args, &hdr); 2485 encode_putfh(xdr, args->fh, &hdr); 2486 encode_lockt(xdr, args, &hdr); 2487 encode_nops(&hdr); 2488} 2489 2490/* 2491 * Encode a LOCKU request 2492 */ 2493static void nfs4_xdr_enc_locku(struct rpc_rqst *req, struct xdr_stream *xdr, 2494 const void *data) 2495{ 2496 const struct nfs_locku_args *args = data; 2497 struct compound_hdr hdr = { 2498 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2499 }; 2500 2501 encode_compound_hdr(xdr, req, &hdr); 2502 encode_sequence(xdr, &args->seq_args, &hdr); 2503 encode_putfh(xdr, args->fh, &hdr); 2504 encode_locku(xdr, args, &hdr); 2505 encode_nops(&hdr); 2506} 2507 2508static void nfs4_xdr_enc_release_lockowner(struct rpc_rqst *req, 2509 struct xdr_stream *xdr, 2510 const void *data) 2511{ 2512 const struct nfs_release_lockowner_args *args = data; 2513 struct compound_hdr hdr = { 2514 .minorversion = 0, 2515 }; 2516 2517 encode_compound_hdr(xdr, req, &hdr); 2518 encode_release_lockowner(xdr, &args->lock_owner, &hdr); 2519 encode_nops(&hdr); 2520} 2521 2522/* 2523 * Encode a READLINK request 2524 */ 2525static void nfs4_xdr_enc_readlink(struct rpc_rqst *req, struct xdr_stream *xdr, 2526 const void *data) 2527{ 2528 const struct nfs4_readlink *args = data; 2529 struct compound_hdr hdr = { 2530 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2531 }; 2532 2533 encode_compound_hdr(xdr, req, &hdr); 2534 encode_sequence(xdr, &args->seq_args, &hdr); 2535 encode_putfh(xdr, args->fh, &hdr); 2536 encode_readlink(xdr, args, req, &hdr); 2537 2538 rpc_prepare_reply_pages(req, args->pages, args->pgbase, 2539 args->pglen, hdr.replen - pagepad_maxsz); 2540 encode_nops(&hdr); 2541} 2542 2543/* 2544 * Encode a READDIR request 2545 */ 2546static void nfs4_xdr_enc_readdir(struct rpc_rqst *req, struct xdr_stream *xdr, 2547 const void *data) 2548{ 2549 const struct nfs4_readdir_arg *args = data; 2550 struct compound_hdr hdr = { 2551 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2552 }; 2553 2554 encode_compound_hdr(xdr, req, &hdr); 2555 encode_sequence(xdr, &args->seq_args, &hdr); 2556 encode_putfh(xdr, args->fh, &hdr); 2557 encode_readdir(xdr, args, req, &hdr); 2558 2559 rpc_prepare_reply_pages(req, args->pages, args->pgbase, 2560 args->count, hdr.replen - pagepad_maxsz); 2561 encode_nops(&hdr); 2562} 2563 2564/* 2565 * Encode a READ request 2566 */ 2567static void nfs4_xdr_enc_read(struct rpc_rqst *req, struct xdr_stream *xdr, 2568 const void *data) 2569{ 2570 const struct nfs_pgio_args *args = data; 2571 struct compound_hdr hdr = { 2572 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2573 }; 2574 2575 encode_compound_hdr(xdr, req, &hdr); 2576 encode_sequence(xdr, &args->seq_args, &hdr); 2577 encode_putfh(xdr, args->fh, &hdr); 2578 encode_read(xdr, args, &hdr); 2579 2580 rpc_prepare_reply_pages(req, args->pages, args->pgbase, 2581 args->count, hdr.replen - pagepad_maxsz); 2582 req->rq_rcv_buf.flags |= XDRBUF_READ; 2583 encode_nops(&hdr); 2584} 2585 2586/* 2587 * Encode an SETATTR request 2588 */ 2589static void nfs4_xdr_enc_setattr(struct rpc_rqst *req, struct xdr_stream *xdr, 2590 const void *data) 2591{ 2592 const struct nfs_setattrargs *args = data; 2593 struct compound_hdr hdr = { 2594 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2595 }; 2596 2597 encode_compound_hdr(xdr, req, &hdr); 2598 encode_sequence(xdr, &args->seq_args, &hdr); 2599 encode_putfh(xdr, args->fh, &hdr); 2600 encode_setattr(xdr, args, args->server, &hdr); 2601 encode_getfattr(xdr, args->bitmask, &hdr); 2602 encode_nops(&hdr); 2603} 2604 2605/* 2606 * Encode a GETACL request 2607 */ 2608static void nfs4_xdr_enc_getacl(struct rpc_rqst *req, struct xdr_stream *xdr, 2609 const void *data) 2610{ 2611 const struct nfs_getaclargs *args = data; 2612 struct compound_hdr hdr = { 2613 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2614 }; 2615 __u32 nfs4_acl_bitmap[2]; 2616 uint32_t replen; 2617 2618 nfs4_acltype_to_bitmap(args->acl_type, nfs4_acl_bitmap); 2619 2620 encode_compound_hdr(xdr, req, &hdr); 2621 encode_sequence(xdr, &args->seq_args, &hdr); 2622 encode_putfh(xdr, args->fh, &hdr); 2623 replen = hdr.replen + op_decode_hdr_maxsz; 2624 encode_getattr(xdr, nfs4_acl_bitmap, NULL, 2625 ARRAY_SIZE(nfs4_acl_bitmap), &hdr); 2626 2627 rpc_prepare_reply_pages(req, args->acl_pages, 0, 2628 args->acl_len, replen); 2629 encode_nops(&hdr); 2630} 2631 2632/* 2633 * Encode a WRITE request 2634 */ 2635static void nfs4_xdr_enc_write(struct rpc_rqst *req, struct xdr_stream *xdr, 2636 const void *data) 2637{ 2638 const struct nfs_pgio_args *args = data; 2639 struct compound_hdr hdr = { 2640 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2641 }; 2642 2643 encode_compound_hdr(xdr, req, &hdr); 2644 encode_sequence(xdr, &args->seq_args, &hdr); 2645 encode_putfh(xdr, args->fh, &hdr); 2646 encode_write(xdr, args, &hdr); 2647 req->rq_snd_buf.flags |= XDRBUF_WRITE; 2648 if (args->bitmask) 2649 encode_getfattr(xdr, args->bitmask, &hdr); 2650 encode_nops(&hdr); 2651} 2652 2653/* 2654 * a COMMIT request 2655 */ 2656static void nfs4_xdr_enc_commit(struct rpc_rqst *req, struct xdr_stream *xdr, 2657 const void *data) 2658{ 2659 const struct nfs_commitargs *args = data; 2660 struct compound_hdr hdr = { 2661 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2662 }; 2663 2664 encode_compound_hdr(xdr, req, &hdr); 2665 encode_sequence(xdr, &args->seq_args, &hdr); 2666 encode_putfh(xdr, args->fh, &hdr); 2667 encode_commit(xdr, args, &hdr); 2668 encode_nops(&hdr); 2669} 2670 2671/* 2672 * FSINFO request 2673 */ 2674static void nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr, 2675 const void *data) 2676{ 2677 const struct nfs4_fsinfo_arg *args = data; 2678 struct compound_hdr hdr = { 2679 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2680 }; 2681 2682 encode_compound_hdr(xdr, req, &hdr); 2683 encode_sequence(xdr, &args->seq_args, &hdr); 2684 encode_putfh(xdr, args->fh, &hdr); 2685 encode_fsinfo(xdr, args->bitmask, &hdr); 2686 encode_nops(&hdr); 2687} 2688 2689/* 2690 * a PATHCONF request 2691 */ 2692static void nfs4_xdr_enc_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr, 2693 const void *data) 2694{ 2695 const struct nfs4_pathconf_arg *args = data; 2696 struct compound_hdr hdr = { 2697 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2698 }; 2699 2700 encode_compound_hdr(xdr, req, &hdr); 2701 encode_sequence(xdr, &args->seq_args, &hdr); 2702 encode_putfh(xdr, args->fh, &hdr); 2703 encode_getattr(xdr, nfs4_pathconf_bitmap, args->bitmask, 2704 ARRAY_SIZE(nfs4_pathconf_bitmap), &hdr); 2705 encode_nops(&hdr); 2706} 2707 2708/* 2709 * a STATFS request 2710 */ 2711static void nfs4_xdr_enc_statfs(struct rpc_rqst *req, struct xdr_stream *xdr, 2712 const void *data) 2713{ 2714 const struct nfs4_statfs_arg *args = data; 2715 struct compound_hdr hdr = { 2716 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2717 }; 2718 2719 encode_compound_hdr(xdr, req, &hdr); 2720 encode_sequence(xdr, &args->seq_args, &hdr); 2721 encode_putfh(xdr, args->fh, &hdr); 2722 encode_getattr(xdr, nfs4_statfs_bitmap, args->bitmask, 2723 ARRAY_SIZE(nfs4_statfs_bitmap), &hdr); 2724 encode_nops(&hdr); 2725} 2726 2727/* 2728 * GETATTR_BITMAP request 2729 */ 2730static void nfs4_xdr_enc_server_caps(struct rpc_rqst *req, 2731 struct xdr_stream *xdr, 2732 const void *data) 2733{ 2734 const struct nfs4_server_caps_arg *args = data; 2735 const u32 *bitmask = args->bitmask; 2736 struct compound_hdr hdr = { 2737 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2738 }; 2739 2740 encode_compound_hdr(xdr, req, &hdr); 2741 encode_sequence(xdr, &args->seq_args, &hdr); 2742 encode_putfh(xdr, args->fhandle, &hdr); 2743 encode_getattr(xdr, bitmask, NULL, 3, &hdr); 2744 encode_nops(&hdr); 2745} 2746 2747/* 2748 * a RENEW request 2749 */ 2750static void nfs4_xdr_enc_renew(struct rpc_rqst *req, struct xdr_stream *xdr, 2751 const void *data) 2752 2753{ 2754 const struct nfs_client *clp = data; 2755 struct compound_hdr hdr = { 2756 .nops = 0, 2757 }; 2758 2759 encode_compound_hdr(xdr, req, &hdr); 2760 encode_renew(xdr, clp->cl_clientid, &hdr); 2761 encode_nops(&hdr); 2762} 2763 2764/* 2765 * a SETCLIENTID request 2766 */ 2767static void nfs4_xdr_enc_setclientid(struct rpc_rqst *req, 2768 struct xdr_stream *xdr, 2769 const void *data) 2770{ 2771 const struct nfs4_setclientid *sc = data; 2772 struct compound_hdr hdr = { 2773 .nops = 0, 2774 }; 2775 2776 encode_compound_hdr(xdr, req, &hdr); 2777 encode_setclientid(xdr, sc, &hdr); 2778 encode_nops(&hdr); 2779} 2780 2781/* 2782 * a SETCLIENTID_CONFIRM request 2783 */ 2784static void nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req, 2785 struct xdr_stream *xdr, 2786 const void *data) 2787{ 2788 const struct nfs4_setclientid_res *arg = data; 2789 struct compound_hdr hdr = { 2790 .nops = 0, 2791 }; 2792 2793 encode_compound_hdr(xdr, req, &hdr); 2794 encode_setclientid_confirm(xdr, arg, &hdr); 2795 encode_nops(&hdr); 2796} 2797 2798/* 2799 * DELEGRETURN request 2800 */ 2801static void nfs4_xdr_enc_delegreturn(struct rpc_rqst *req, 2802 struct xdr_stream *xdr, 2803 const void *data) 2804{ 2805 const struct nfs4_delegreturnargs *args = data; 2806 struct compound_hdr hdr = { 2807 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2808 }; 2809 2810 encode_compound_hdr(xdr, req, &hdr); 2811 encode_sequence(xdr, &args->seq_args, &hdr); 2812 encode_putfh(xdr, args->fhandle, &hdr); 2813 if (args->lr_args) 2814 encode_layoutreturn(xdr, args->lr_args, &hdr); 2815 if (args->bitmask) 2816 encode_getfattr(xdr, args->bitmask, &hdr); 2817 encode_delegreturn(xdr, args->stateid, &hdr); 2818 encode_nops(&hdr); 2819} 2820 2821/* 2822 * Encode FS_LOCATIONS request 2823 */ 2824static void nfs4_xdr_enc_fs_locations(struct rpc_rqst *req, 2825 struct xdr_stream *xdr, 2826 const void *data) 2827{ 2828 const struct nfs4_fs_locations_arg *args = data; 2829 struct compound_hdr hdr = { 2830 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2831 }; 2832 uint32_t replen; 2833 2834 encode_compound_hdr(xdr, req, &hdr); 2835 encode_sequence(xdr, &args->seq_args, &hdr); 2836 if (args->migration) { 2837 encode_putfh(xdr, args->fh, &hdr); 2838 replen = hdr.replen; 2839 encode_fs_locations(xdr, args->bitmask, &hdr); 2840 if (args->renew) 2841 encode_renew(xdr, args->clientid, &hdr); 2842 } else { 2843 encode_putfh(xdr, args->dir_fh, &hdr); 2844 encode_lookup(xdr, args->name, &hdr); 2845 replen = hdr.replen; 2846 encode_fs_locations(xdr, args->bitmask, &hdr); 2847 } 2848 2849 rpc_prepare_reply_pages(req, (struct page **)&args->page, 0, 2850 PAGE_SIZE, replen); 2851 encode_nops(&hdr); 2852} 2853 2854/* 2855 * Encode SECINFO request 2856 */ 2857static void nfs4_xdr_enc_secinfo(struct rpc_rqst *req, 2858 struct xdr_stream *xdr, 2859 const void *data) 2860{ 2861 const struct nfs4_secinfo_arg *args = data; 2862 struct compound_hdr hdr = { 2863 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2864 }; 2865 2866 encode_compound_hdr(xdr, req, &hdr); 2867 encode_sequence(xdr, &args->seq_args, &hdr); 2868 encode_putfh(xdr, args->dir_fh, &hdr); 2869 encode_secinfo(xdr, args->name, &hdr); 2870 encode_nops(&hdr); 2871} 2872 2873/* 2874 * Encode FSID_PRESENT request 2875 */ 2876static void nfs4_xdr_enc_fsid_present(struct rpc_rqst *req, 2877 struct xdr_stream *xdr, 2878 const void *data) 2879{ 2880 const struct nfs4_fsid_present_arg *args = data; 2881 struct compound_hdr hdr = { 2882 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 2883 }; 2884 2885 encode_compound_hdr(xdr, req, &hdr); 2886 encode_sequence(xdr, &args->seq_args, &hdr); 2887 encode_putfh(xdr, args->fh, &hdr); 2888 encode_getfh(xdr, &hdr); 2889 if (args->renew) 2890 encode_renew(xdr, args->clientid, &hdr); 2891 encode_nops(&hdr); 2892} 2893 2894#if defined(CONFIG_NFS_V4_1) 2895/* 2896 * BIND_CONN_TO_SESSION request 2897 */ 2898static void nfs4_xdr_enc_bind_conn_to_session(struct rpc_rqst *req, 2899 struct xdr_stream *xdr, 2900 const void *data) 2901{ 2902 const struct nfs41_bind_conn_to_session_args *args = data; 2903 struct compound_hdr hdr = { 2904 .minorversion = args->client->cl_mvops->minor_version, 2905 }; 2906 2907 encode_compound_hdr(xdr, req, &hdr); 2908 encode_bind_conn_to_session(xdr, args, &hdr); 2909 encode_nops(&hdr); 2910} 2911 2912/* 2913 * EXCHANGE_ID request 2914 */ 2915static void nfs4_xdr_enc_exchange_id(struct rpc_rqst *req, 2916 struct xdr_stream *xdr, 2917 const void *data) 2918{ 2919 const struct nfs41_exchange_id_args *args = data; 2920 struct compound_hdr hdr = { 2921 .minorversion = args->client->cl_mvops->minor_version, 2922 }; 2923 2924 encode_compound_hdr(xdr, req, &hdr); 2925 encode_exchange_id(xdr, args, &hdr); 2926 encode_nops(&hdr); 2927} 2928 2929/* 2930 * a CREATE_SESSION request 2931 */ 2932static void nfs4_xdr_enc_create_session(struct rpc_rqst *req, 2933 struct xdr_stream *xdr, 2934 const void *data) 2935{ 2936 const struct nfs41_create_session_args *args = data; 2937 struct compound_hdr hdr = { 2938 .minorversion = args->client->cl_mvops->minor_version, 2939 }; 2940 2941 encode_compound_hdr(xdr, req, &hdr); 2942 encode_create_session(xdr, args, &hdr); 2943 encode_nops(&hdr); 2944} 2945 2946/* 2947 * a DESTROY_SESSION request 2948 */ 2949static void nfs4_xdr_enc_destroy_session(struct rpc_rqst *req, 2950 struct xdr_stream *xdr, 2951 const void *data) 2952{ 2953 const struct nfs4_session *session = data; 2954 struct compound_hdr hdr = { 2955 .minorversion = session->clp->cl_mvops->minor_version, 2956 }; 2957 2958 encode_compound_hdr(xdr, req, &hdr); 2959 encode_destroy_session(xdr, session, &hdr); 2960 encode_nops(&hdr); 2961} 2962 2963/* 2964 * a DESTROY_CLIENTID request 2965 */ 2966static void nfs4_xdr_enc_destroy_clientid(struct rpc_rqst *req, 2967 struct xdr_stream *xdr, 2968 const void *data) 2969{ 2970 const struct nfs_client *clp = data; 2971 struct compound_hdr hdr = { 2972 .minorversion = clp->cl_mvops->minor_version, 2973 }; 2974 2975 encode_compound_hdr(xdr, req, &hdr); 2976 encode_destroy_clientid(xdr, clp->cl_clientid, &hdr); 2977 encode_nops(&hdr); 2978} 2979 2980/* 2981 * a SEQUENCE request 2982 */ 2983static void nfs4_xdr_enc_sequence(struct rpc_rqst *req, struct xdr_stream *xdr, 2984 const void *data) 2985{ 2986 const struct nfs4_sequence_args *args = data; 2987 struct compound_hdr hdr = { 2988 .minorversion = nfs4_xdr_minorversion(args), 2989 }; 2990 2991 encode_compound_hdr(xdr, req, &hdr); 2992 encode_sequence(xdr, args, &hdr); 2993 encode_nops(&hdr); 2994} 2995 2996#endif 2997 2998/* 2999 * a GET_LEASE_TIME request 3000 */ 3001static void nfs4_xdr_enc_get_lease_time(struct rpc_rqst *req, 3002 struct xdr_stream *xdr, 3003 const void *data) 3004{ 3005 const struct nfs4_get_lease_time_args *args = data; 3006 struct compound_hdr hdr = { 3007 .minorversion = nfs4_xdr_minorversion(&args->la_seq_args), 3008 }; 3009 const u32 lease_bitmap[3] = { FATTR4_WORD0_LEASE_TIME }; 3010 3011 encode_compound_hdr(xdr, req, &hdr); 3012 encode_sequence(xdr, &args->la_seq_args, &hdr); 3013 encode_putrootfh(xdr, &hdr); 3014 encode_fsinfo(xdr, lease_bitmap, &hdr); 3015 encode_nops(&hdr); 3016} 3017 3018#ifdef CONFIG_NFS_V4_1 3019 3020/* 3021 * a RECLAIM_COMPLETE request 3022 */ 3023static void nfs4_xdr_enc_reclaim_complete(struct rpc_rqst *req, 3024 struct xdr_stream *xdr, 3025 const void *data) 3026{ 3027 const struct nfs41_reclaim_complete_args *args = data; 3028 struct compound_hdr hdr = { 3029 .minorversion = nfs4_xdr_minorversion(&args->seq_args) 3030 }; 3031 3032 encode_compound_hdr(xdr, req, &hdr); 3033 encode_sequence(xdr, &args->seq_args, &hdr); 3034 encode_reclaim_complete(xdr, args, &hdr); 3035 encode_nops(&hdr); 3036} 3037 3038/* 3039 * Encode GETDEVICEINFO request 3040 */ 3041static void nfs4_xdr_enc_getdeviceinfo(struct rpc_rqst *req, 3042 struct xdr_stream *xdr, 3043 const void *data) 3044{ 3045 const struct nfs4_getdeviceinfo_args *args = data; 3046 struct compound_hdr hdr = { 3047 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 3048 }; 3049 uint32_t replen; 3050 3051 encode_compound_hdr(xdr, req, &hdr); 3052 encode_sequence(xdr, &args->seq_args, &hdr); 3053 3054 replen = hdr.replen + op_decode_hdr_maxsz + 2; 3055 3056 encode_getdeviceinfo(xdr, args, &hdr); 3057 3058 /* set up reply kvec. device_addr4 opaque data is read into the 3059 * pages */ 3060 rpc_prepare_reply_pages(req, args->pdev->pages, args->pdev->pgbase, 3061 args->pdev->pglen, replen); 3062 encode_nops(&hdr); 3063} 3064 3065/* 3066 * Encode LAYOUTGET request 3067 */ 3068static void nfs4_xdr_enc_layoutget(struct rpc_rqst *req, 3069 struct xdr_stream *xdr, 3070 const void *data) 3071{ 3072 const struct nfs4_layoutget_args *args = data; 3073 struct compound_hdr hdr = { 3074 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 3075 }; 3076 3077 encode_compound_hdr(xdr, req, &hdr); 3078 encode_sequence(xdr, &args->seq_args, &hdr); 3079 encode_putfh(xdr, NFS_FH(args->inode), &hdr); 3080 encode_layoutget(xdr, args, &hdr); 3081 3082 rpc_prepare_reply_pages(req, args->layout.pages, 0, 3083 args->layout.pglen, hdr.replen - pagepad_maxsz); 3084 encode_nops(&hdr); 3085} 3086 3087/* 3088 * Encode LAYOUTCOMMIT request 3089 */ 3090static void nfs4_xdr_enc_layoutcommit(struct rpc_rqst *req, 3091 struct xdr_stream *xdr, 3092 const void *priv) 3093{ 3094 const struct nfs4_layoutcommit_args *args = priv; 3095 struct nfs4_layoutcommit_data *data = 3096 container_of(args, struct nfs4_layoutcommit_data, args); 3097 struct compound_hdr hdr = { 3098 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 3099 }; 3100 3101 encode_compound_hdr(xdr, req, &hdr); 3102 encode_sequence(xdr, &args->seq_args, &hdr); 3103 encode_putfh(xdr, NFS_FH(args->inode), &hdr); 3104 encode_layoutcommit(xdr, data->args.inode, args, &hdr); 3105 encode_getfattr(xdr, args->bitmask, &hdr); 3106 encode_nops(&hdr); 3107} 3108 3109/* 3110 * Encode LAYOUTRETURN request 3111 */ 3112static void nfs4_xdr_enc_layoutreturn(struct rpc_rqst *req, 3113 struct xdr_stream *xdr, 3114 const void *data) 3115{ 3116 const struct nfs4_layoutreturn_args *args = data; 3117 struct compound_hdr hdr = { 3118 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 3119 }; 3120 3121 encode_compound_hdr(xdr, req, &hdr); 3122 encode_sequence(xdr, &args->seq_args, &hdr); 3123 encode_putfh(xdr, NFS_FH(args->inode), &hdr); 3124 encode_layoutreturn(xdr, args, &hdr); 3125 encode_nops(&hdr); 3126} 3127 3128/* 3129 * Encode SECINFO_NO_NAME request 3130 */ 3131static void nfs4_xdr_enc_secinfo_no_name(struct rpc_rqst *req, 3132 struct xdr_stream *xdr, 3133 const void *data) 3134{ 3135 const struct nfs41_secinfo_no_name_args *args = data; 3136 struct compound_hdr hdr = { 3137 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 3138 }; 3139 3140 encode_compound_hdr(xdr, req, &hdr); 3141 encode_sequence(xdr, &args->seq_args, &hdr); 3142 encode_putrootfh(xdr, &hdr); 3143 encode_secinfo_no_name(xdr, args, &hdr); 3144 encode_nops(&hdr); 3145} 3146 3147/* 3148 * Encode TEST_STATEID request 3149 */ 3150static void nfs4_xdr_enc_test_stateid(struct rpc_rqst *req, 3151 struct xdr_stream *xdr, 3152 const void *data) 3153{ 3154 const struct nfs41_test_stateid_args *args = data; 3155 struct compound_hdr hdr = { 3156 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 3157 }; 3158 3159 encode_compound_hdr(xdr, req, &hdr); 3160 encode_sequence(xdr, &args->seq_args, &hdr); 3161 encode_test_stateid(xdr, args, &hdr); 3162 encode_nops(&hdr); 3163} 3164 3165/* 3166 * Encode FREE_STATEID request 3167 */ 3168static void nfs4_xdr_enc_free_stateid(struct rpc_rqst *req, 3169 struct xdr_stream *xdr, 3170 const void *data) 3171{ 3172 const struct nfs41_free_stateid_args *args = data; 3173 struct compound_hdr hdr = { 3174 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 3175 }; 3176 3177 encode_compound_hdr(xdr, req, &hdr); 3178 encode_sequence(xdr, &args->seq_args, &hdr); 3179 encode_free_stateid(xdr, args, &hdr); 3180 encode_nops(&hdr); 3181} 3182#endif /* CONFIG_NFS_V4_1 */ 3183 3184static int decode_opaque_inline(struct xdr_stream *xdr, unsigned int *len, char **string) 3185{ 3186 ssize_t ret = xdr_stream_decode_opaque_inline(xdr, (void **)string, 3187 NFS4_OPAQUE_LIMIT); 3188 if (unlikely(ret < 0)) 3189 return -EIO; 3190 *len = ret; 3191 return 0; 3192} 3193 3194static int decode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr) 3195{ 3196 ssize_t ret; 3197 void *ptr; 3198 u32 tmp; 3199 3200 if (xdr_stream_decode_u32(xdr, &tmp) < 0) 3201 return -EIO; 3202 hdr->status = tmp; 3203 3204 ret = xdr_stream_decode_opaque_inline(xdr, &ptr, NFS4_OPAQUE_LIMIT); 3205 if (ret < 0) 3206 return -EIO; 3207 hdr->taglen = ret; 3208 hdr->tag = ptr; 3209 3210 if (xdr_stream_decode_u32(xdr, &tmp) < 0) 3211 return -EIO; 3212 hdr->nops = tmp; 3213 if (unlikely(hdr->nops < 1)) 3214 return nfs4_stat_to_errno(hdr->status); 3215 return 0; 3216} 3217 3218static bool __decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected, 3219 int *nfs_retval) 3220{ 3221 __be32 *p; 3222 uint32_t opnum; 3223 int32_t nfserr; 3224 3225 p = xdr_inline_decode(xdr, 8); 3226 if (unlikely(!p)) 3227 goto out_overflow; 3228 opnum = be32_to_cpup(p++); 3229 if (unlikely(opnum != expected)) 3230 goto out_bad_operation; 3231 if (unlikely(*p != cpu_to_be32(NFS_OK))) 3232 goto out_status; 3233 *nfs_retval = 0; 3234 return true; 3235out_status: 3236 nfserr = be32_to_cpup(p); 3237 trace_nfs4_xdr_status(xdr, opnum, nfserr); 3238 *nfs_retval = nfs4_stat_to_errno(nfserr); 3239 return true; 3240out_bad_operation: 3241 trace_nfs4_xdr_bad_operation(xdr, opnum, expected); 3242 *nfs_retval = -EREMOTEIO; 3243 return false; 3244out_overflow: 3245 *nfs_retval = -EIO; 3246 return false; 3247} 3248 3249static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected) 3250{ 3251 int retval; 3252 3253 __decode_op_hdr(xdr, expected, &retval); 3254 return retval; 3255} 3256 3257/* Dummy routine */ 3258static int decode_ace(struct xdr_stream *xdr, void *ace) 3259{ 3260 __be32 *p; 3261 unsigned int strlen; 3262 char *str; 3263 3264 p = xdr_inline_decode(xdr, 12); 3265 if (unlikely(!p)) 3266 return -EIO; 3267 return decode_opaque_inline(xdr, &strlen, &str); 3268} 3269 3270static ssize_t 3271decode_bitmap4(struct xdr_stream *xdr, uint32_t *bitmap, size_t sz) 3272{ 3273 ssize_t ret; 3274 3275 ret = xdr_stream_decode_uint32_array(xdr, bitmap, sz); 3276 if (likely(ret >= 0)) 3277 return ret; 3278 if (ret != -EMSGSIZE) 3279 return -EIO; 3280 return sz; 3281} 3282 3283static int decode_attr_bitmap(struct xdr_stream *xdr, uint32_t *bitmap) 3284{ 3285 ssize_t ret; 3286 ret = decode_bitmap4(xdr, bitmap, 3); 3287 return ret < 0 ? ret : 0; 3288} 3289 3290static int decode_attr_length(struct xdr_stream *xdr, uint32_t *attrlen, unsigned int *savep) 3291{ 3292 __be32 *p; 3293 3294 p = xdr_inline_decode(xdr, 4); 3295 if (unlikely(!p)) 3296 return -EIO; 3297 *attrlen = be32_to_cpup(p); 3298 *savep = xdr_stream_pos(xdr); 3299 return 0; 3300} 3301 3302static int decode_attr_supported(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *bitmask) 3303{ 3304 if (likely(bitmap[0] & FATTR4_WORD0_SUPPORTED_ATTRS)) { 3305 int ret; 3306 ret = decode_attr_bitmap(xdr, bitmask); 3307 if (unlikely(ret < 0)) 3308 return ret; 3309 bitmap[0] &= ~FATTR4_WORD0_SUPPORTED_ATTRS; 3310 } else 3311 bitmask[0] = bitmask[1] = bitmask[2] = 0; 3312 dprintk("%s: bitmask=%08x:%08x:%08x\n", __func__, 3313 bitmask[0], bitmask[1], bitmask[2]); 3314 return 0; 3315} 3316 3317static int decode_attr_type(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *type) 3318{ 3319 __be32 *p; 3320 int ret = 0; 3321 3322 *type = 0; 3323 if (unlikely(bitmap[0] & (FATTR4_WORD0_TYPE - 1U))) 3324 return -EIO; 3325 if (likely(bitmap[0] & FATTR4_WORD0_TYPE)) { 3326 p = xdr_inline_decode(xdr, 4); 3327 if (unlikely(!p)) 3328 return -EIO; 3329 *type = be32_to_cpup(p); 3330 if (*type < NF4REG || *type > NF4NAMEDATTR) { 3331 dprintk("%s: bad type %d\n", __func__, *type); 3332 return -EIO; 3333 } 3334 bitmap[0] &= ~FATTR4_WORD0_TYPE; 3335 ret = NFS_ATTR_FATTR_TYPE; 3336 } 3337 dprintk("%s: type=0%o\n", __func__, nfs_type2fmt[*type]); 3338 return ret; 3339} 3340 3341static int decode_attr_fh_expire_type(struct xdr_stream *xdr, 3342 uint32_t *bitmap, uint32_t *type) 3343{ 3344 __be32 *p; 3345 3346 *type = 0; 3347 if (unlikely(bitmap[0] & (FATTR4_WORD0_FH_EXPIRE_TYPE - 1U))) 3348 return -EIO; 3349 if (likely(bitmap[0] & FATTR4_WORD0_FH_EXPIRE_TYPE)) { 3350 p = xdr_inline_decode(xdr, 4); 3351 if (unlikely(!p)) 3352 return -EIO; 3353 *type = be32_to_cpup(p); 3354 bitmap[0] &= ~FATTR4_WORD0_FH_EXPIRE_TYPE; 3355 } 3356 dprintk("%s: expire type=0x%x\n", __func__, *type); 3357 return 0; 3358} 3359 3360static int decode_attr_change(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *change) 3361{ 3362 __be32 *p; 3363 int ret = 0; 3364 3365 *change = 0; 3366 if (unlikely(bitmap[0] & (FATTR4_WORD0_CHANGE - 1U))) 3367 return -EIO; 3368 if (likely(bitmap[0] & FATTR4_WORD0_CHANGE)) { 3369 p = xdr_inline_decode(xdr, 8); 3370 if (unlikely(!p)) 3371 return -EIO; 3372 xdr_decode_hyper(p, change); 3373 bitmap[0] &= ~FATTR4_WORD0_CHANGE; 3374 ret = NFS_ATTR_FATTR_CHANGE; 3375 } 3376 dprintk("%s: change attribute=%Lu\n", __func__, 3377 (unsigned long long)*change); 3378 return ret; 3379} 3380 3381static int decode_attr_size(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *size) 3382{ 3383 __be32 *p; 3384 int ret = 0; 3385 3386 *size = 0; 3387 if (unlikely(bitmap[0] & (FATTR4_WORD0_SIZE - 1U))) 3388 return -EIO; 3389 if (likely(bitmap[0] & FATTR4_WORD0_SIZE)) { 3390 p = xdr_inline_decode(xdr, 8); 3391 if (unlikely(!p)) 3392 return -EIO; 3393 xdr_decode_hyper(p, size); 3394 bitmap[0] &= ~FATTR4_WORD0_SIZE; 3395 ret = NFS_ATTR_FATTR_SIZE; 3396 } 3397 dprintk("%s: file size=%Lu\n", __func__, (unsigned long long)*size); 3398 return ret; 3399} 3400 3401static int decode_attr_link_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) 3402{ 3403 __be32 *p; 3404 3405 *res = 0; 3406 if (unlikely(bitmap[0] & (FATTR4_WORD0_LINK_SUPPORT - 1U))) 3407 return -EIO; 3408 if (likely(bitmap[0] & FATTR4_WORD0_LINK_SUPPORT)) { 3409 p = xdr_inline_decode(xdr, 4); 3410 if (unlikely(!p)) 3411 return -EIO; 3412 *res = be32_to_cpup(p); 3413 bitmap[0] &= ~FATTR4_WORD0_LINK_SUPPORT; 3414 } 3415 dprintk("%s: link support=%s\n", __func__, *res == 0 ? "false" : "true"); 3416 return 0; 3417} 3418 3419static int decode_attr_symlink_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) 3420{ 3421 __be32 *p; 3422 3423 *res = 0; 3424 if (unlikely(bitmap[0] & (FATTR4_WORD0_SYMLINK_SUPPORT - 1U))) 3425 return -EIO; 3426 if (likely(bitmap[0] & FATTR4_WORD0_SYMLINK_SUPPORT)) { 3427 p = xdr_inline_decode(xdr, 4); 3428 if (unlikely(!p)) 3429 return -EIO; 3430 *res = be32_to_cpup(p); 3431 bitmap[0] &= ~FATTR4_WORD0_SYMLINK_SUPPORT; 3432 } 3433 dprintk("%s: symlink support=%s\n", __func__, *res == 0 ? "false" : "true"); 3434 return 0; 3435} 3436 3437static int decode_attr_fsid(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fsid *fsid) 3438{ 3439 __be32 *p; 3440 int ret = 0; 3441 3442 fsid->major = 0; 3443 fsid->minor = 0; 3444 if (unlikely(bitmap[0] & (FATTR4_WORD0_FSID - 1U))) 3445 return -EIO; 3446 if (likely(bitmap[0] & FATTR4_WORD0_FSID)) { 3447 p = xdr_inline_decode(xdr, 16); 3448 if (unlikely(!p)) 3449 return -EIO; 3450 p = xdr_decode_hyper(p, &fsid->major); 3451 xdr_decode_hyper(p, &fsid->minor); 3452 bitmap[0] &= ~FATTR4_WORD0_FSID; 3453 ret = NFS_ATTR_FATTR_FSID; 3454 } 3455 dprintk("%s: fsid=(0x%Lx/0x%Lx)\n", __func__, 3456 (unsigned long long)fsid->major, 3457 (unsigned long long)fsid->minor); 3458 return ret; 3459} 3460 3461static int decode_attr_lease_time(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) 3462{ 3463 __be32 *p; 3464 3465 *res = 60; 3466 if (unlikely(bitmap[0] & (FATTR4_WORD0_LEASE_TIME - 1U))) 3467 return -EIO; 3468 if (likely(bitmap[0] & FATTR4_WORD0_LEASE_TIME)) { 3469 p = xdr_inline_decode(xdr, 4); 3470 if (unlikely(!p)) 3471 return -EIO; 3472 *res = be32_to_cpup(p); 3473 bitmap[0] &= ~FATTR4_WORD0_LEASE_TIME; 3474 } 3475 dprintk("%s: lease time=%u\n", __func__, (unsigned int)*res); 3476 return 0; 3477} 3478 3479static int decode_attr_error(struct xdr_stream *xdr, uint32_t *bitmap, int32_t *res) 3480{ 3481 __be32 *p; 3482 3483 if (unlikely(bitmap[0] & (FATTR4_WORD0_RDATTR_ERROR - 1U))) 3484 return -EIO; 3485 if (likely(bitmap[0] & FATTR4_WORD0_RDATTR_ERROR)) { 3486 p = xdr_inline_decode(xdr, 4); 3487 if (unlikely(!p)) 3488 return -EIO; 3489 bitmap[0] &= ~FATTR4_WORD0_RDATTR_ERROR; 3490 *res = -be32_to_cpup(p); 3491 } 3492 return 0; 3493} 3494 3495static int decode_attr_exclcreat_supported(struct xdr_stream *xdr, 3496 uint32_t *bitmap, uint32_t *bitmask) 3497{ 3498 if (likely(bitmap[2] & FATTR4_WORD2_SUPPATTR_EXCLCREAT)) { 3499 int ret; 3500 ret = decode_attr_bitmap(xdr, bitmask); 3501 if (unlikely(ret < 0)) 3502 return ret; 3503 bitmap[2] &= ~FATTR4_WORD2_SUPPATTR_EXCLCREAT; 3504 } else 3505 bitmask[0] = bitmask[1] = bitmask[2] = 0; 3506 dprintk("%s: bitmask=%08x:%08x:%08x\n", __func__, 3507 bitmask[0], bitmask[1], bitmask[2]); 3508 return 0; 3509} 3510 3511static int decode_attr_filehandle(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fh *fh) 3512{ 3513 __be32 *p; 3514 u32 len; 3515 3516 if (fh != NULL) 3517 memset(fh, 0, sizeof(*fh)); 3518 3519 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEHANDLE - 1U))) 3520 return -EIO; 3521 if (likely(bitmap[0] & FATTR4_WORD0_FILEHANDLE)) { 3522 p = xdr_inline_decode(xdr, 4); 3523 if (unlikely(!p)) 3524 return -EIO; 3525 len = be32_to_cpup(p); 3526 if (len > NFS4_FHSIZE || len == 0) { 3527 trace_nfs4_xdr_bad_filehandle(xdr, OP_READDIR, 3528 NFS4ERR_BADHANDLE); 3529 return -EREMOTEIO; 3530 } 3531 p = xdr_inline_decode(xdr, len); 3532 if (unlikely(!p)) 3533 return -EIO; 3534 if (fh != NULL) { 3535 memcpy(fh->data, p, len); 3536 fh->size = len; 3537 } 3538 bitmap[0] &= ~FATTR4_WORD0_FILEHANDLE; 3539 } 3540 return 0; 3541} 3542 3543static int decode_attr_aclsupport(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) 3544{ 3545 __be32 *p; 3546 3547 *res = 0; 3548 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACLSUPPORT - 1U))) 3549 return -EIO; 3550 if (likely(bitmap[0] & FATTR4_WORD0_ACLSUPPORT)) { 3551 p = xdr_inline_decode(xdr, 4); 3552 if (unlikely(!p)) 3553 return -EIO; 3554 *res = be32_to_cpup(p); 3555 bitmap[0] &= ~FATTR4_WORD0_ACLSUPPORT; 3556 } 3557 dprintk("%s: ACLs supported=%u\n", __func__, (unsigned int)*res); 3558 return 0; 3559} 3560 3561static int decode_attr_case_insensitive(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) 3562{ 3563 __be32 *p; 3564 3565 *res = 0; 3566 if (unlikely(bitmap[0] & (FATTR4_WORD0_CASE_INSENSITIVE - 1U))) 3567 return -EIO; 3568 if (likely(bitmap[0] & FATTR4_WORD0_CASE_INSENSITIVE)) { 3569 p = xdr_inline_decode(xdr, 4); 3570 if (unlikely(!p)) 3571 return -EIO; 3572 *res = be32_to_cpup(p); 3573 bitmap[0] &= ~FATTR4_WORD0_CASE_INSENSITIVE; 3574 } 3575 dprintk("%s: case_insensitive=%s\n", __func__, *res == 0 ? "false" : "true"); 3576 return 0; 3577} 3578 3579static int decode_attr_case_preserving(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) 3580{ 3581 __be32 *p; 3582 3583 *res = 0; 3584 if (unlikely(bitmap[0] & (FATTR4_WORD0_CASE_PRESERVING - 1U))) 3585 return -EIO; 3586 if (likely(bitmap[0] & FATTR4_WORD0_CASE_PRESERVING)) { 3587 p = xdr_inline_decode(xdr, 4); 3588 if (unlikely(!p)) 3589 return -EIO; 3590 *res = be32_to_cpup(p); 3591 bitmap[0] &= ~FATTR4_WORD0_CASE_PRESERVING; 3592 } 3593 dprintk("%s: case_preserving=%s\n", __func__, *res == 0 ? "false" : "true"); 3594 return 0; 3595} 3596 3597static int decode_attr_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid) 3598{ 3599 __be32 *p; 3600 int ret = 0; 3601 3602 *fileid = 0; 3603 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEID - 1U))) 3604 return -EIO; 3605 if (likely(bitmap[0] & FATTR4_WORD0_FILEID)) { 3606 p = xdr_inline_decode(xdr, 8); 3607 if (unlikely(!p)) 3608 return -EIO; 3609 xdr_decode_hyper(p, fileid); 3610 bitmap[0] &= ~FATTR4_WORD0_FILEID; 3611 ret = NFS_ATTR_FATTR_FILEID; 3612 } 3613 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid); 3614 return ret; 3615} 3616 3617static int decode_attr_mounted_on_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid) 3618{ 3619 __be32 *p; 3620 int ret = 0; 3621 3622 *fileid = 0; 3623 if (unlikely(bitmap[1] & (FATTR4_WORD1_MOUNTED_ON_FILEID - 1U))) 3624 return -EIO; 3625 if (likely(bitmap[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)) { 3626 p = xdr_inline_decode(xdr, 8); 3627 if (unlikely(!p)) 3628 return -EIO; 3629 xdr_decode_hyper(p, fileid); 3630 bitmap[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID; 3631 ret = NFS_ATTR_FATTR_MOUNTED_ON_FILEID; 3632 } 3633 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid); 3634 return ret; 3635} 3636 3637static int decode_attr_files_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 3638{ 3639 __be32 *p; 3640 int status = 0; 3641 3642 *res = 0; 3643 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_AVAIL - 1U))) 3644 return -EIO; 3645 if (likely(bitmap[0] & FATTR4_WORD0_FILES_AVAIL)) { 3646 p = xdr_inline_decode(xdr, 8); 3647 if (unlikely(!p)) 3648 return -EIO; 3649 xdr_decode_hyper(p, res); 3650 bitmap[0] &= ~FATTR4_WORD0_FILES_AVAIL; 3651 } 3652 dprintk("%s: files avail=%Lu\n", __func__, (unsigned long long)*res); 3653 return status; 3654} 3655 3656static int decode_attr_files_free(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_FILES_FREE - 1U))) 3663 return -EIO; 3664 if (likely(bitmap[0] & FATTR4_WORD0_FILES_FREE)) { 3665 p = xdr_inline_decode(xdr, 8); 3666 if (unlikely(!p)) 3667 return -EIO; 3668 xdr_decode_hyper(p, res); 3669 bitmap[0] &= ~FATTR4_WORD0_FILES_FREE; 3670 } 3671 dprintk("%s: files free=%Lu\n", __func__, (unsigned long long)*res); 3672 return status; 3673} 3674 3675static int decode_attr_files_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 3676{ 3677 __be32 *p; 3678 int status = 0; 3679 3680 *res = 0; 3681 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_TOTAL - 1U))) 3682 return -EIO; 3683 if (likely(bitmap[0] & FATTR4_WORD0_FILES_TOTAL)) { 3684 p = xdr_inline_decode(xdr, 8); 3685 if (unlikely(!p)) 3686 return -EIO; 3687 xdr_decode_hyper(p, res); 3688 bitmap[0] &= ~FATTR4_WORD0_FILES_TOTAL; 3689 } 3690 dprintk("%s: files total=%Lu\n", __func__, (unsigned long long)*res); 3691 return status; 3692} 3693 3694static int decode_pathname(struct xdr_stream *xdr, struct nfs4_pathname *path) 3695{ 3696 u32 n; 3697 __be32 *p; 3698 int status = 0; 3699 3700 p = xdr_inline_decode(xdr, 4); 3701 if (unlikely(!p)) 3702 return -EIO; 3703 n = be32_to_cpup(p); 3704 if (n == 0) 3705 goto root_path; 3706 dprintk("pathname4: "); 3707 if (n > NFS4_PATHNAME_MAXCOMPONENTS) { 3708 dprintk("cannot parse %d components in path\n", n); 3709 goto out_eio; 3710 } 3711 for (path->ncomponents = 0; path->ncomponents < n; path->ncomponents++) { 3712 struct nfs4_string *component = &path->components[path->ncomponents]; 3713 status = decode_opaque_inline(xdr, &component->len, &component->data); 3714 if (unlikely(status != 0)) 3715 goto out_eio; 3716 ifdebug (XDR) 3717 pr_cont("%s%.*s ", 3718 (path->ncomponents != n ? "/ " : ""), 3719 component->len, component->data); 3720 } 3721out: 3722 return status; 3723root_path: 3724/* a root pathname is sent as a zero component4 */ 3725 path->ncomponents = 1; 3726 path->components[0].len=0; 3727 path->components[0].data=NULL; 3728 dprintk("pathname4: /\n"); 3729 goto out; 3730out_eio: 3731 dprintk(" status %d", status); 3732 status = -EIO; 3733 goto out; 3734} 3735 3736static int decode_attr_fs_locations(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_fs_locations *res) 3737{ 3738 int n; 3739 __be32 *p; 3740 int status = -EIO; 3741 3742 if (unlikely(bitmap[0] & (FATTR4_WORD0_FS_LOCATIONS -1U))) 3743 goto out; 3744 status = 0; 3745 if (unlikely(!(bitmap[0] & FATTR4_WORD0_FS_LOCATIONS))) 3746 goto out; 3747 bitmap[0] &= ~FATTR4_WORD0_FS_LOCATIONS; 3748 status = -EIO; 3749 /* Ignore borken servers that return unrequested attrs */ 3750 if (unlikely(res == NULL)) 3751 goto out; 3752 dprintk("%s: fsroot:\n", __func__); 3753 status = decode_pathname(xdr, &res->fs_path); 3754 if (unlikely(status != 0)) 3755 goto out; 3756 p = xdr_inline_decode(xdr, 4); 3757 if (unlikely(!p)) 3758 goto out_eio; 3759 n = be32_to_cpup(p); 3760 for (res->nlocations = 0; res->nlocations < n; res->nlocations++) { 3761 u32 m; 3762 struct nfs4_fs_location *loc; 3763 3764 if (res->nlocations == NFS4_FS_LOCATIONS_MAXENTRIES) 3765 break; 3766 loc = &res->locations[res->nlocations]; 3767 p = xdr_inline_decode(xdr, 4); 3768 if (unlikely(!p)) 3769 goto out_eio; 3770 m = be32_to_cpup(p); 3771 3772 dprintk("%s: servers:\n", __func__); 3773 for (loc->nservers = 0; loc->nservers < m; loc->nservers++) { 3774 struct nfs4_string *server; 3775 3776 if (loc->nservers == NFS4_FS_LOCATION_MAXSERVERS) { 3777 unsigned int i; 3778 dprintk("%s: using first %u of %u servers " 3779 "returned for location %u\n", 3780 __func__, 3781 NFS4_FS_LOCATION_MAXSERVERS, 3782 m, res->nlocations); 3783 for (i = loc->nservers; i < m; i++) { 3784 unsigned int len; 3785 char *data; 3786 status = decode_opaque_inline(xdr, &len, &data); 3787 if (unlikely(status != 0)) 3788 goto out_eio; 3789 } 3790 break; 3791 } 3792 server = &loc->servers[loc->nservers]; 3793 status = decode_opaque_inline(xdr, &server->len, &server->data); 3794 if (unlikely(status != 0)) 3795 goto out_eio; 3796 dprintk("%s ", server->data); 3797 } 3798 status = decode_pathname(xdr, &loc->rootpath); 3799 if (unlikely(status != 0)) 3800 goto out_eio; 3801 } 3802 if (res->nlocations != 0) 3803 status = NFS_ATTR_FATTR_V4_LOCATIONS; 3804out: 3805 dprintk("%s: fs_locations done, error = %d\n", __func__, status); 3806 return status; 3807out_eio: 3808 status = -EIO; 3809 goto out; 3810} 3811 3812static int decode_attr_maxfilesize(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 3813{ 3814 __be32 *p; 3815 int status = 0; 3816 3817 *res = 0; 3818 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXFILESIZE - 1U))) 3819 return -EIO; 3820 if (likely(bitmap[0] & FATTR4_WORD0_MAXFILESIZE)) { 3821 p = xdr_inline_decode(xdr, 8); 3822 if (unlikely(!p)) 3823 return -EIO; 3824 xdr_decode_hyper(p, res); 3825 bitmap[0] &= ~FATTR4_WORD0_MAXFILESIZE; 3826 } 3827 dprintk("%s: maxfilesize=%Lu\n", __func__, (unsigned long long)*res); 3828 return status; 3829} 3830 3831static int decode_attr_maxlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxlink) 3832{ 3833 __be32 *p; 3834 int status = 0; 3835 3836 *maxlink = 1; 3837 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXLINK - 1U))) 3838 return -EIO; 3839 if (likely(bitmap[0] & FATTR4_WORD0_MAXLINK)) { 3840 p = xdr_inline_decode(xdr, 4); 3841 if (unlikely(!p)) 3842 return -EIO; 3843 *maxlink = be32_to_cpup(p); 3844 bitmap[0] &= ~FATTR4_WORD0_MAXLINK; 3845 } 3846 dprintk("%s: maxlink=%u\n", __func__, *maxlink); 3847 return status; 3848} 3849 3850static int decode_attr_maxname(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxname) 3851{ 3852 __be32 *p; 3853 int status = 0; 3854 3855 *maxname = 1024; 3856 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXNAME - 1U))) 3857 return -EIO; 3858 if (likely(bitmap[0] & FATTR4_WORD0_MAXNAME)) { 3859 p = xdr_inline_decode(xdr, 4); 3860 if (unlikely(!p)) 3861 return -EIO; 3862 *maxname = be32_to_cpup(p); 3863 bitmap[0] &= ~FATTR4_WORD0_MAXNAME; 3864 } 3865 dprintk("%s: maxname=%u\n", __func__, *maxname); 3866 return status; 3867} 3868 3869static int decode_attr_maxread(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) 3870{ 3871 __be32 *p; 3872 int status = 0; 3873 3874 *res = 1024; 3875 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXREAD - 1U))) 3876 return -EIO; 3877 if (likely(bitmap[0] & FATTR4_WORD0_MAXREAD)) { 3878 uint64_t maxread; 3879 p = xdr_inline_decode(xdr, 8); 3880 if (unlikely(!p)) 3881 return -EIO; 3882 xdr_decode_hyper(p, &maxread); 3883 if (maxread > 0x7FFFFFFF) 3884 maxread = 0x7FFFFFFF; 3885 *res = (uint32_t)maxread; 3886 bitmap[0] &= ~FATTR4_WORD0_MAXREAD; 3887 } 3888 dprintk("%s: maxread=%lu\n", __func__, (unsigned long)*res); 3889 return status; 3890} 3891 3892static int decode_attr_maxwrite(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) 3893{ 3894 __be32 *p; 3895 int status = 0; 3896 3897 *res = 1024; 3898 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXWRITE - 1U))) 3899 return -EIO; 3900 if (likely(bitmap[0] & FATTR4_WORD0_MAXWRITE)) { 3901 uint64_t maxwrite; 3902 p = xdr_inline_decode(xdr, 8); 3903 if (unlikely(!p)) 3904 return -EIO; 3905 xdr_decode_hyper(p, &maxwrite); 3906 if (maxwrite > 0x7FFFFFFF) 3907 maxwrite = 0x7FFFFFFF; 3908 *res = (uint32_t)maxwrite; 3909 bitmap[0] &= ~FATTR4_WORD0_MAXWRITE; 3910 } 3911 dprintk("%s: maxwrite=%lu\n", __func__, (unsigned long)*res); 3912 return status; 3913} 3914 3915static int decode_attr_mode(struct xdr_stream *xdr, uint32_t *bitmap, umode_t *mode) 3916{ 3917 uint32_t tmp; 3918 __be32 *p; 3919 int ret = 0; 3920 3921 *mode = 0; 3922 if (unlikely(bitmap[1] & (FATTR4_WORD1_MODE - 1U))) 3923 return -EIO; 3924 if (likely(bitmap[1] & FATTR4_WORD1_MODE)) { 3925 p = xdr_inline_decode(xdr, 4); 3926 if (unlikely(!p)) 3927 return -EIO; 3928 tmp = be32_to_cpup(p); 3929 *mode = tmp & ~S_IFMT; 3930 bitmap[1] &= ~FATTR4_WORD1_MODE; 3931 ret = NFS_ATTR_FATTR_MODE; 3932 } 3933 dprintk("%s: file mode=0%o\n", __func__, (unsigned int)*mode); 3934 return ret; 3935} 3936 3937static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *nlink) 3938{ 3939 __be32 *p; 3940 int ret = 0; 3941 3942 *nlink = 1; 3943 if (unlikely(bitmap[1] & (FATTR4_WORD1_NUMLINKS - 1U))) 3944 return -EIO; 3945 if (likely(bitmap[1] & FATTR4_WORD1_NUMLINKS)) { 3946 p = xdr_inline_decode(xdr, 4); 3947 if (unlikely(!p)) 3948 return -EIO; 3949 *nlink = be32_to_cpup(p); 3950 bitmap[1] &= ~FATTR4_WORD1_NUMLINKS; 3951 ret = NFS_ATTR_FATTR_NLINK; 3952 } 3953 dprintk("%s: nlink=%u\n", __func__, (unsigned int)*nlink); 3954 return ret; 3955} 3956 3957static ssize_t decode_nfs4_string(struct xdr_stream *xdr, 3958 struct nfs4_string *name, gfp_t gfp_flags) 3959{ 3960 ssize_t ret; 3961 3962 ret = xdr_stream_decode_string_dup(xdr, &name->data, 3963 XDR_MAX_NETOBJ, gfp_flags); 3964 name->len = 0; 3965 if (ret > 0) 3966 name->len = ret; 3967 return ret; 3968} 3969 3970static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap, 3971 const struct nfs_server *server, kuid_t *uid, 3972 struct nfs4_string *owner_name) 3973{ 3974 ssize_t len; 3975 char *p; 3976 3977 *uid = make_kuid(&init_user_ns, -2); 3978 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER - 1U))) 3979 return -EIO; 3980 if (!(bitmap[1] & FATTR4_WORD1_OWNER)) 3981 return 0; 3982 bitmap[1] &= ~FATTR4_WORD1_OWNER; 3983 3984 if (owner_name != NULL) { 3985 len = decode_nfs4_string(xdr, owner_name, GFP_NOIO); 3986 if (len <= 0) 3987 goto out; 3988 dprintk("%s: name=%s\n", __func__, owner_name->data); 3989 return NFS_ATTR_FATTR_OWNER_NAME; 3990 } else { 3991 len = xdr_stream_decode_opaque_inline(xdr, (void **)&p, 3992 XDR_MAX_NETOBJ); 3993 if (len <= 0 || nfs_map_name_to_uid(server, p, len, uid) != 0) 3994 goto out; 3995 dprintk("%s: uid=%d\n", __func__, (int)from_kuid(&init_user_ns, *uid)); 3996 return NFS_ATTR_FATTR_OWNER; 3997 } 3998out: 3999 if (len == -EBADMSG) 4000 return -EIO; 4001 return 0; 4002} 4003 4004static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap, 4005 const struct nfs_server *server, kgid_t *gid, 4006 struct nfs4_string *group_name) 4007{ 4008 ssize_t len; 4009 char *p; 4010 4011 *gid = make_kgid(&init_user_ns, -2); 4012 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER_GROUP - 1U))) 4013 return -EIO; 4014 if (!(bitmap[1] & FATTR4_WORD1_OWNER_GROUP)) 4015 return 0; 4016 bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP; 4017 4018 if (group_name != NULL) { 4019 len = decode_nfs4_string(xdr, group_name, GFP_NOIO); 4020 if (len <= 0) 4021 goto out; 4022 dprintk("%s: name=%s\n", __func__, group_name->data); 4023 return NFS_ATTR_FATTR_GROUP_NAME; 4024 } else { 4025 len = xdr_stream_decode_opaque_inline(xdr, (void **)&p, 4026 XDR_MAX_NETOBJ); 4027 if (len <= 0 || nfs_map_group_to_gid(server, p, len, gid) != 0) 4028 goto out; 4029 dprintk("%s: gid=%d\n", __func__, (int)from_kgid(&init_user_ns, *gid)); 4030 return NFS_ATTR_FATTR_GROUP; 4031 } 4032out: 4033 if (len == -EBADMSG) 4034 return -EIO; 4035 return 0; 4036} 4037 4038static int decode_attr_rdev(struct xdr_stream *xdr, uint32_t *bitmap, dev_t *rdev) 4039{ 4040 uint32_t major = 0, minor = 0; 4041 __be32 *p; 4042 int ret = 0; 4043 4044 *rdev = MKDEV(0,0); 4045 if (unlikely(bitmap[1] & (FATTR4_WORD1_RAWDEV - 1U))) 4046 return -EIO; 4047 if (likely(bitmap[1] & FATTR4_WORD1_RAWDEV)) { 4048 dev_t tmp; 4049 4050 p = xdr_inline_decode(xdr, 8); 4051 if (unlikely(!p)) 4052 return -EIO; 4053 major = be32_to_cpup(p++); 4054 minor = be32_to_cpup(p); 4055 tmp = MKDEV(major, minor); 4056 if (MAJOR(tmp) == major && MINOR(tmp) == minor) 4057 *rdev = tmp; 4058 bitmap[1] &= ~ FATTR4_WORD1_RAWDEV; 4059 ret = NFS_ATTR_FATTR_RDEV; 4060 } 4061 dprintk("%s: rdev=(0x%x:0x%x)\n", __func__, major, minor); 4062 return ret; 4063} 4064 4065static int decode_attr_space_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 4066{ 4067 __be32 *p; 4068 int status = 0; 4069 4070 *res = 0; 4071 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_AVAIL - 1U))) 4072 return -EIO; 4073 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_AVAIL)) { 4074 p = xdr_inline_decode(xdr, 8); 4075 if (unlikely(!p)) 4076 return -EIO; 4077 xdr_decode_hyper(p, res); 4078 bitmap[1] &= ~FATTR4_WORD1_SPACE_AVAIL; 4079 } 4080 dprintk("%s: space avail=%Lu\n", __func__, (unsigned long long)*res); 4081 return status; 4082} 4083 4084static int decode_attr_space_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 4085{ 4086 __be32 *p; 4087 int status = 0; 4088 4089 *res = 0; 4090 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_FREE - 1U))) 4091 return -EIO; 4092 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_FREE)) { 4093 p = xdr_inline_decode(xdr, 8); 4094 if (unlikely(!p)) 4095 return -EIO; 4096 xdr_decode_hyper(p, res); 4097 bitmap[1] &= ~FATTR4_WORD1_SPACE_FREE; 4098 } 4099 dprintk("%s: space free=%Lu\n", __func__, (unsigned long long)*res); 4100 return status; 4101} 4102 4103static int decode_attr_space_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) 4104{ 4105 __be32 *p; 4106 int status = 0; 4107 4108 *res = 0; 4109 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_TOTAL - 1U))) 4110 return -EIO; 4111 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_TOTAL)) { 4112 p = xdr_inline_decode(xdr, 8); 4113 if (unlikely(!p)) 4114 return -EIO; 4115 xdr_decode_hyper(p, res); 4116 bitmap[1] &= ~FATTR4_WORD1_SPACE_TOTAL; 4117 } 4118 dprintk("%s: space total=%Lu\n", __func__, (unsigned long long)*res); 4119 return status; 4120} 4121 4122static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *used) 4123{ 4124 __be32 *p; 4125 int ret = 0; 4126 4127 *used = 0; 4128 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_USED - 1U))) 4129 return -EIO; 4130 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_USED)) { 4131 p = xdr_inline_decode(xdr, 8); 4132 if (unlikely(!p)) 4133 return -EIO; 4134 xdr_decode_hyper(p, used); 4135 bitmap[1] &= ~FATTR4_WORD1_SPACE_USED; 4136 ret = NFS_ATTR_FATTR_SPACE_USED; 4137 } 4138 dprintk("%s: space used=%Lu\n", __func__, 4139 (unsigned long long)*used); 4140 return ret; 4141} 4142 4143static __be32 * 4144xdr_decode_nfstime4(__be32 *p, struct timespec64 *t) 4145{ 4146 __u64 sec; 4147 4148 p = xdr_decode_hyper(p, &sec); 4149 t-> tv_sec = sec; 4150 t->tv_nsec = be32_to_cpup(p++); 4151 return p; 4152} 4153 4154static int decode_attr_time(struct xdr_stream *xdr, struct timespec64 *time) 4155{ 4156 __be32 *p; 4157 4158 p = xdr_inline_decode(xdr, nfstime4_maxsz << 2); 4159 if (unlikely(!p)) 4160 return -EIO; 4161 xdr_decode_nfstime4(p, time); 4162 return 0; 4163} 4164 4165static int decode_attr_time_access(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec64 *time) 4166{ 4167 int status = 0; 4168 4169 time->tv_sec = 0; 4170 time->tv_nsec = 0; 4171 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_ACCESS - 1U))) 4172 return -EIO; 4173 if (likely(bitmap[1] & FATTR4_WORD1_TIME_ACCESS)) { 4174 status = decode_attr_time(xdr, time); 4175 if (status == 0) 4176 status = NFS_ATTR_FATTR_ATIME; 4177 bitmap[1] &= ~FATTR4_WORD1_TIME_ACCESS; 4178 } 4179 dprintk("%s: atime=%lld\n", __func__, time->tv_sec); 4180 return status; 4181} 4182 4183static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec64 *time) 4184{ 4185 int status = 0; 4186 4187 time->tv_sec = 0; 4188 time->tv_nsec = 0; 4189 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_METADATA - 1U))) 4190 return -EIO; 4191 if (likely(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) { 4192 status = decode_attr_time(xdr, time); 4193 if (status == 0) 4194 status = NFS_ATTR_FATTR_CTIME; 4195 bitmap[1] &= ~FATTR4_WORD1_TIME_METADATA; 4196 } 4197 dprintk("%s: ctime=%lld\n", __func__, time->tv_sec); 4198 return status; 4199} 4200 4201static int decode_attr_time_delta(struct xdr_stream *xdr, uint32_t *bitmap, 4202 struct timespec64 *time) 4203{ 4204 int status = 0; 4205 4206 time->tv_sec = 0; 4207 time->tv_nsec = 0; 4208 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_DELTA - 1U))) 4209 return -EIO; 4210 if (likely(bitmap[1] & FATTR4_WORD1_TIME_DELTA)) { 4211 status = decode_attr_time(xdr, time); 4212 bitmap[1] &= ~FATTR4_WORD1_TIME_DELTA; 4213 } 4214 dprintk("%s: time_delta=%lld %ld\n", __func__, time->tv_sec, 4215 time->tv_nsec); 4216 return status; 4217} 4218 4219static int decode_attr_security_label(struct xdr_stream *xdr, uint32_t *bitmap, 4220 struct nfs4_label *label) 4221{ 4222 uint32_t pi = 0; 4223 uint32_t lfs = 0; 4224 __u32 len; 4225 __be32 *p; 4226 int status = 0; 4227 4228 if (unlikely(bitmap[2] & (FATTR4_WORD2_SECURITY_LABEL - 1U))) 4229 return -EIO; 4230 if (likely(bitmap[2] & FATTR4_WORD2_SECURITY_LABEL)) { 4231 p = xdr_inline_decode(xdr, 4); 4232 if (unlikely(!p)) 4233 return -EIO; 4234 lfs = be32_to_cpup(p++); 4235 p = xdr_inline_decode(xdr, 4); 4236 if (unlikely(!p)) 4237 return -EIO; 4238 pi = be32_to_cpup(p++); 4239 p = xdr_inline_decode(xdr, 4); 4240 if (unlikely(!p)) 4241 return -EIO; 4242 len = be32_to_cpup(p++); 4243 p = xdr_inline_decode(xdr, len); 4244 if (unlikely(!p)) 4245 return -EIO; 4246 bitmap[2] &= ~FATTR4_WORD2_SECURITY_LABEL; 4247 if (len < NFS4_MAXLABELLEN) { 4248 if (label && label->len) { 4249 if (label->len < len) 4250 return -ERANGE; 4251 memcpy(label->label, p, len); 4252 label->len = len; 4253 label->pi = pi; 4254 label->lfs = lfs; 4255 status = NFS_ATTR_FATTR_V4_SECURITY_LABEL; 4256 } 4257 } else 4258 printk(KERN_WARNING "%s: label too long (%u)!\n", 4259 __func__, len); 4260 if (label && label->label) 4261 dprintk("%s: label=%.*s, len=%d, PI=%d, LFS=%d\n", 4262 __func__, label->len, (char *)label->label, 4263 label->len, label->pi, label->lfs); 4264 } 4265 return status; 4266} 4267 4268static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec64 *time) 4269{ 4270 int status = 0; 4271 4272 time->tv_sec = 0; 4273 time->tv_nsec = 0; 4274 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_MODIFY - 1U))) 4275 return -EIO; 4276 if (likely(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) { 4277 status = decode_attr_time(xdr, time); 4278 if (status == 0) 4279 status = NFS_ATTR_FATTR_MTIME; 4280 bitmap[1] &= ~FATTR4_WORD1_TIME_MODIFY; 4281 } 4282 dprintk("%s: mtime=%lld\n", __func__, time->tv_sec); 4283 return status; 4284} 4285 4286static int decode_attr_xattrsupport(struct xdr_stream *xdr, uint32_t *bitmap, 4287 uint32_t *res) 4288{ 4289 __be32 *p; 4290 4291 *res = 0; 4292 if (unlikely(bitmap[2] & (FATTR4_WORD2_XATTR_SUPPORT - 1U))) 4293 return -EIO; 4294 if (likely(bitmap[2] & FATTR4_WORD2_XATTR_SUPPORT)) { 4295 p = xdr_inline_decode(xdr, 4); 4296 if (unlikely(!p)) 4297 return -EIO; 4298 *res = be32_to_cpup(p); 4299 bitmap[2] &= ~FATTR4_WORD2_XATTR_SUPPORT; 4300 } 4301 dprintk("%s: XATTR support=%s\n", __func__, 4302 *res == 0 ? "false" : "true"); 4303 return 0; 4304} 4305 4306static int verify_attr_len(struct xdr_stream *xdr, unsigned int savep, uint32_t attrlen) 4307{ 4308 unsigned int attrwords = XDR_QUADLEN(attrlen); 4309 unsigned int nwords = (xdr_stream_pos(xdr) - savep) >> 2; 4310 4311 if (unlikely(attrwords != nwords)) { 4312 dprintk("%s: server returned incorrect attribute length: " 4313 "%u %c %u\n", 4314 __func__, 4315 attrwords << 2, 4316 (attrwords < nwords) ? '<' : '>', 4317 nwords << 2); 4318 return -EIO; 4319 } 4320 return 0; 4321} 4322 4323static int decode_change_info(struct xdr_stream *xdr, struct nfs4_change_info *cinfo) 4324{ 4325 __be32 *p; 4326 4327 p = xdr_inline_decode(xdr, 20); 4328 if (unlikely(!p)) 4329 return -EIO; 4330 cinfo->atomic = be32_to_cpup(p++); 4331 p = xdr_decode_hyper(p, &cinfo->before); 4332 xdr_decode_hyper(p, &cinfo->after); 4333 return 0; 4334} 4335 4336static int decode_access(struct xdr_stream *xdr, u32 *supported, u32 *access) 4337{ 4338 __be32 *p; 4339 uint32_t supp, acc; 4340 int status; 4341 4342 status = decode_op_hdr(xdr, OP_ACCESS); 4343 if (status) 4344 return status; 4345 p = xdr_inline_decode(xdr, 8); 4346 if (unlikely(!p)) 4347 return -EIO; 4348 supp = be32_to_cpup(p++); 4349 acc = be32_to_cpup(p); 4350 *supported = supp; 4351 *access = acc; 4352 return 0; 4353} 4354 4355static int decode_opaque_fixed(struct xdr_stream *xdr, void *buf, size_t len) 4356{ 4357 ssize_t ret = xdr_stream_decode_opaque_fixed(xdr, buf, len); 4358 if (unlikely(ret < 0)) 4359 return -EIO; 4360 return 0; 4361} 4362 4363static int decode_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid) 4364{ 4365 return decode_opaque_fixed(xdr, stateid, NFS4_STATEID_SIZE); 4366} 4367 4368static int decode_open_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid) 4369{ 4370 stateid->type = NFS4_OPEN_STATEID_TYPE; 4371 return decode_stateid(xdr, stateid); 4372} 4373 4374static int decode_lock_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid) 4375{ 4376 stateid->type = NFS4_LOCK_STATEID_TYPE; 4377 return decode_stateid(xdr, stateid); 4378} 4379 4380static int decode_delegation_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid) 4381{ 4382 stateid->type = NFS4_DELEGATION_STATEID_TYPE; 4383 return decode_stateid(xdr, stateid); 4384} 4385 4386static int decode_invalid_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid) 4387{ 4388 nfs4_stateid dummy; 4389 4390 nfs4_stateid_copy(stateid, &invalid_stateid); 4391 return decode_stateid(xdr, &dummy); 4392} 4393 4394static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res) 4395{ 4396 int status; 4397 4398 status = decode_op_hdr(xdr, OP_CLOSE); 4399 if (status != -EIO) 4400 nfs_increment_open_seqid(status, res->seqid); 4401 if (!status) 4402 status = decode_invalid_stateid(xdr, &res->stateid); 4403 return status; 4404} 4405 4406static int decode_verifier(struct xdr_stream *xdr, void *verifier) 4407{ 4408 return decode_opaque_fixed(xdr, verifier, NFS4_VERIFIER_SIZE); 4409} 4410 4411static int decode_write_verifier(struct xdr_stream *xdr, struct nfs_write_verifier *verifier) 4412{ 4413 return decode_opaque_fixed(xdr, verifier->data, NFS4_VERIFIER_SIZE); 4414} 4415 4416static int decode_commit(struct xdr_stream *xdr, struct nfs_commitres *res) 4417{ 4418 struct nfs_writeverf *verf = res->verf; 4419 int status; 4420 4421 status = decode_op_hdr(xdr, OP_COMMIT); 4422 if (!status) 4423 status = decode_write_verifier(xdr, &verf->verifier); 4424 if (!status) 4425 verf->committed = NFS_FILE_SYNC; 4426 return status; 4427} 4428 4429static int decode_create(struct xdr_stream *xdr, struct nfs4_change_info *cinfo) 4430{ 4431 __be32 *p; 4432 uint32_t bmlen; 4433 int status; 4434 4435 status = decode_op_hdr(xdr, OP_CREATE); 4436 if (status) 4437 return status; 4438 if ((status = decode_change_info(xdr, cinfo))) 4439 return status; 4440 p = xdr_inline_decode(xdr, 4); 4441 if (unlikely(!p)) 4442 return -EIO; 4443 bmlen = be32_to_cpup(p); 4444 p = xdr_inline_decode(xdr, bmlen << 2); 4445 if (likely(p)) 4446 return 0; 4447 return -EIO; 4448} 4449 4450static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_res *res) 4451{ 4452 unsigned int savep; 4453 uint32_t attrlen, bitmap[3] = {0}; 4454 int status; 4455 4456 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) 4457 goto xdr_error; 4458 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) 4459 goto xdr_error; 4460 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) 4461 goto xdr_error; 4462 if ((status = decode_attr_supported(xdr, bitmap, res->attr_bitmask)) != 0) 4463 goto xdr_error; 4464 if ((status = decode_attr_fh_expire_type(xdr, bitmap, 4465 &res->fh_expire_type)) != 0) 4466 goto xdr_error; 4467 if ((status = decode_attr_link_support(xdr, bitmap, &res->has_links)) != 0) 4468 goto xdr_error; 4469 if ((status = decode_attr_symlink_support(xdr, bitmap, &res->has_symlinks)) != 0) 4470 goto xdr_error; 4471 if ((status = decode_attr_aclsupport(xdr, bitmap, &res->acl_bitmask)) != 0) 4472 goto xdr_error; 4473 if ((status = decode_attr_case_insensitive(xdr, bitmap, &res->case_insensitive)) != 0) 4474 goto xdr_error; 4475 if ((status = decode_attr_case_preserving(xdr, bitmap, &res->case_preserving)) != 0) 4476 goto xdr_error; 4477 if ((status = decode_attr_exclcreat_supported(xdr, bitmap, 4478 res->exclcreat_bitmask)) != 0) 4479 goto xdr_error; 4480 status = verify_attr_len(xdr, savep, attrlen); 4481xdr_error: 4482 dprintk("%s: xdr returned %d!\n", __func__, -status); 4483 return status; 4484} 4485 4486static int decode_statfs(struct xdr_stream *xdr, struct nfs_fsstat *fsstat) 4487{ 4488 unsigned int savep; 4489 uint32_t attrlen, bitmap[3] = {0}; 4490 int status; 4491 4492 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) 4493 goto xdr_error; 4494 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) 4495 goto xdr_error; 4496 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) 4497 goto xdr_error; 4498 4499 if ((status = decode_attr_files_avail(xdr, bitmap, &fsstat->afiles)) != 0) 4500 goto xdr_error; 4501 if ((status = decode_attr_files_free(xdr, bitmap, &fsstat->ffiles)) != 0) 4502 goto xdr_error; 4503 if ((status = decode_attr_files_total(xdr, bitmap, &fsstat->tfiles)) != 0) 4504 goto xdr_error; 4505 4506 status = -EIO; 4507 if (unlikely(bitmap[0])) 4508 goto xdr_error; 4509 4510 if ((status = decode_attr_space_avail(xdr, bitmap, &fsstat->abytes)) != 0) 4511 goto xdr_error; 4512 if ((status = decode_attr_space_free(xdr, bitmap, &fsstat->fbytes)) != 0) 4513 goto xdr_error; 4514 if ((status = decode_attr_space_total(xdr, bitmap, &fsstat->tbytes)) != 0) 4515 goto xdr_error; 4516 4517 status = verify_attr_len(xdr, savep, attrlen); 4518xdr_error: 4519 dprintk("%s: xdr returned %d!\n", __func__, -status); 4520 return status; 4521} 4522 4523static int decode_pathconf(struct xdr_stream *xdr, struct nfs_pathconf *pathconf) 4524{ 4525 unsigned int savep; 4526 uint32_t attrlen, bitmap[3] = {0}; 4527 int status; 4528 4529 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) 4530 goto xdr_error; 4531 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) 4532 goto xdr_error; 4533 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) 4534 goto xdr_error; 4535 4536 if ((status = decode_attr_maxlink(xdr, bitmap, &pathconf->max_link)) != 0) 4537 goto xdr_error; 4538 if ((status = decode_attr_maxname(xdr, bitmap, &pathconf->max_namelen)) != 0) 4539 goto xdr_error; 4540 4541 status = verify_attr_len(xdr, savep, attrlen); 4542xdr_error: 4543 dprintk("%s: xdr returned %d!\n", __func__, -status); 4544 return status; 4545} 4546 4547static int decode_threshold_hint(struct xdr_stream *xdr, 4548 uint32_t *bitmap, 4549 uint64_t *res, 4550 uint32_t hint_bit) 4551{ 4552 __be32 *p; 4553 4554 *res = 0; 4555 if (likely(bitmap[0] & hint_bit)) { 4556 p = xdr_inline_decode(xdr, 8); 4557 if (unlikely(!p)) 4558 return -EIO; 4559 xdr_decode_hyper(p, res); 4560 } 4561 return 0; 4562} 4563 4564static int decode_first_threshold_item4(struct xdr_stream *xdr, 4565 struct nfs4_threshold *res) 4566{ 4567 __be32 *p; 4568 unsigned int savep; 4569 uint32_t bitmap[3] = {0,}, attrlen; 4570 int status; 4571 4572 /* layout type */ 4573 p = xdr_inline_decode(xdr, 4); 4574 if (unlikely(!p)) 4575 return -EIO; 4576 res->l_type = be32_to_cpup(p); 4577 4578 /* thi_hintset bitmap */ 4579 status = decode_attr_bitmap(xdr, bitmap); 4580 if (status < 0) 4581 goto xdr_error; 4582 4583 /* thi_hintlist length */ 4584 status = decode_attr_length(xdr, &attrlen, &savep); 4585 if (status < 0) 4586 goto xdr_error; 4587 /* thi_hintlist */ 4588 status = decode_threshold_hint(xdr, bitmap, &res->rd_sz, THRESHOLD_RD); 4589 if (status < 0) 4590 goto xdr_error; 4591 status = decode_threshold_hint(xdr, bitmap, &res->wr_sz, THRESHOLD_WR); 4592 if (status < 0) 4593 goto xdr_error; 4594 status = decode_threshold_hint(xdr, bitmap, &res->rd_io_sz, 4595 THRESHOLD_RD_IO); 4596 if (status < 0) 4597 goto xdr_error; 4598 status = decode_threshold_hint(xdr, bitmap, &res->wr_io_sz, 4599 THRESHOLD_WR_IO); 4600 if (status < 0) 4601 goto xdr_error; 4602 4603 status = verify_attr_len(xdr, savep, attrlen); 4604 res->bm = bitmap[0]; 4605 4606 dprintk("%s bm=0x%x rd_sz=%llu wr_sz=%llu rd_io=%llu wr_io=%llu\n", 4607 __func__, res->bm, res->rd_sz, res->wr_sz, res->rd_io_sz, 4608 res->wr_io_sz); 4609xdr_error: 4610 dprintk("%s ret=%d!\n", __func__, status); 4611 return status; 4612} 4613 4614/* 4615 * Thresholds on pNFS direct I/O vrs MDS I/O 4616 */ 4617static int decode_attr_mdsthreshold(struct xdr_stream *xdr, 4618 uint32_t *bitmap, 4619 struct nfs4_threshold *res) 4620{ 4621 __be32 *p; 4622 int status = 0; 4623 uint32_t num; 4624 4625 if (unlikely(bitmap[2] & (FATTR4_WORD2_MDSTHRESHOLD - 1U))) 4626 return -EIO; 4627 if (bitmap[2] & FATTR4_WORD2_MDSTHRESHOLD) { 4628 /* Did the server return an unrequested attribute? */ 4629 if (unlikely(res == NULL)) 4630 return -EREMOTEIO; 4631 p = xdr_inline_decode(xdr, 4); 4632 if (unlikely(!p)) 4633 return -EIO; 4634 num = be32_to_cpup(p); 4635 if (num == 0) 4636 return 0; 4637 if (num > 1) 4638 printk(KERN_INFO "%s: Warning: Multiple pNFS layout " 4639 "drivers per filesystem not supported\n", 4640 __func__); 4641 4642 status = decode_first_threshold_item4(xdr, res); 4643 bitmap[2] &= ~FATTR4_WORD2_MDSTHRESHOLD; 4644 } 4645 return status; 4646} 4647 4648static int decode_getfattr_attrs(struct xdr_stream *xdr, uint32_t *bitmap, 4649 struct nfs_fattr *fattr, struct nfs_fh *fh, 4650 struct nfs4_fs_locations *fs_loc, const struct nfs_server *server) 4651{ 4652 int status; 4653 umode_t fmode = 0; 4654 uint32_t type; 4655 int32_t err; 4656 4657 status = decode_attr_type(xdr, bitmap, &type); 4658 if (status < 0) 4659 goto xdr_error; 4660 fattr->mode = 0; 4661 if (status != 0) { 4662 fattr->mode |= nfs_type2fmt[type]; 4663 fattr->valid |= status; 4664 } 4665 4666 status = decode_attr_change(xdr, bitmap, &fattr->change_attr); 4667 if (status < 0) 4668 goto xdr_error; 4669 fattr->valid |= status; 4670 4671 status = decode_attr_size(xdr, bitmap, &fattr->size); 4672 if (status < 0) 4673 goto xdr_error; 4674 fattr->valid |= status; 4675 4676 status = decode_attr_fsid(xdr, bitmap, &fattr->fsid); 4677 if (status < 0) 4678 goto xdr_error; 4679 fattr->valid |= status; 4680 4681 err = 0; 4682 status = decode_attr_error(xdr, bitmap, &err); 4683 if (status < 0) 4684 goto xdr_error; 4685 4686 status = decode_attr_filehandle(xdr, bitmap, fh); 4687 if (status < 0) 4688 goto xdr_error; 4689 4690 status = decode_attr_fileid(xdr, bitmap, &fattr->fileid); 4691 if (status < 0) 4692 goto xdr_error; 4693 fattr->valid |= status; 4694 4695 status = decode_attr_fs_locations(xdr, bitmap, fs_loc); 4696 if (status < 0) 4697 goto xdr_error; 4698 fattr->valid |= status; 4699 4700 status = -EIO; 4701 if (unlikely(bitmap[0])) 4702 goto xdr_error; 4703 4704 status = decode_attr_mode(xdr, bitmap, &fmode); 4705 if (status < 0) 4706 goto xdr_error; 4707 if (status != 0) { 4708 fattr->mode |= fmode; 4709 fattr->valid |= status; 4710 } 4711 4712 status = decode_attr_nlink(xdr, bitmap, &fattr->nlink); 4713 if (status < 0) 4714 goto xdr_error; 4715 fattr->valid |= status; 4716 4717 status = decode_attr_owner(xdr, bitmap, server, &fattr->uid, fattr->owner_name); 4718 if (status < 0) 4719 goto xdr_error; 4720 fattr->valid |= status; 4721 4722 status = decode_attr_group(xdr, bitmap, server, &fattr->gid, fattr->group_name); 4723 if (status < 0) 4724 goto xdr_error; 4725 fattr->valid |= status; 4726 4727 status = decode_attr_rdev(xdr, bitmap, &fattr->rdev); 4728 if (status < 0) 4729 goto xdr_error; 4730 fattr->valid |= status; 4731 4732 status = decode_attr_space_used(xdr, bitmap, &fattr->du.nfs3.used); 4733 if (status < 0) 4734 goto xdr_error; 4735 fattr->valid |= status; 4736 4737 status = decode_attr_time_access(xdr, bitmap, &fattr->atime); 4738 if (status < 0) 4739 goto xdr_error; 4740 fattr->valid |= status; 4741 4742 status = decode_attr_time_metadata(xdr, bitmap, &fattr->ctime); 4743 if (status < 0) 4744 goto xdr_error; 4745 fattr->valid |= status; 4746 4747 status = decode_attr_time_modify(xdr, bitmap, &fattr->mtime); 4748 if (status < 0) 4749 goto xdr_error; 4750 fattr->valid |= status; 4751 4752 status = decode_attr_mounted_on_fileid(xdr, bitmap, &fattr->mounted_on_fileid); 4753 if (status < 0) 4754 goto xdr_error; 4755 fattr->valid |= status; 4756 4757 status = -EIO; 4758 if (unlikely(bitmap[1])) 4759 goto xdr_error; 4760 4761 status = decode_attr_mdsthreshold(xdr, bitmap, fattr->mdsthreshold); 4762 if (status < 0) 4763 goto xdr_error; 4764 4765 status = decode_attr_security_label(xdr, bitmap, fattr->label); 4766 if (status < 0) 4767 goto xdr_error; 4768 fattr->valid |= status; 4769 4770xdr_error: 4771 dprintk("%s: xdr returned %d\n", __func__, -status); 4772 return status; 4773} 4774 4775static int decode_getfattr_generic(struct xdr_stream *xdr, struct nfs_fattr *fattr, 4776 struct nfs_fh *fh, struct nfs4_fs_locations *fs_loc, 4777 const struct nfs_server *server) 4778{ 4779 unsigned int savep; 4780 uint32_t attrlen, 4781 bitmap[3] = {0}; 4782 int status; 4783 4784 status = decode_op_hdr(xdr, OP_GETATTR); 4785 if (status < 0) 4786 goto xdr_error; 4787 4788 status = decode_attr_bitmap(xdr, bitmap); 4789 if (status < 0) 4790 goto xdr_error; 4791 4792 status = decode_attr_length(xdr, &attrlen, &savep); 4793 if (status < 0) 4794 goto xdr_error; 4795 4796 status = decode_getfattr_attrs(xdr, bitmap, fattr, fh, fs_loc, server); 4797 if (status < 0) 4798 goto xdr_error; 4799 4800 status = verify_attr_len(xdr, savep, attrlen); 4801xdr_error: 4802 dprintk("%s: xdr returned %d\n", __func__, -status); 4803 return status; 4804} 4805 4806static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr, 4807 const struct nfs_server *server) 4808{ 4809 return decode_getfattr_generic(xdr, fattr, NULL, NULL, server); 4810} 4811 4812/* 4813 * Decode potentially multiple layout types. 4814 */ 4815static int decode_pnfs_layout_types(struct xdr_stream *xdr, 4816 struct nfs_fsinfo *fsinfo) 4817{ 4818 __be32 *p; 4819 uint32_t i; 4820 4821 p = xdr_inline_decode(xdr, 4); 4822 if (unlikely(!p)) 4823 return -EIO; 4824 fsinfo->nlayouttypes = be32_to_cpup(p); 4825 4826 /* pNFS is not supported by the underlying file system */ 4827 if (fsinfo->nlayouttypes == 0) 4828 return 0; 4829 4830 /* Decode and set first layout type, move xdr->p past unused types */ 4831 p = xdr_inline_decode(xdr, fsinfo->nlayouttypes * 4); 4832 if (unlikely(!p)) 4833 return -EIO; 4834 4835 /* If we get too many, then just cap it at the max */ 4836 if (fsinfo->nlayouttypes > NFS_MAX_LAYOUT_TYPES) { 4837 printk(KERN_INFO "NFS: %s: Warning: Too many (%u) pNFS layout types\n", 4838 __func__, fsinfo->nlayouttypes); 4839 fsinfo->nlayouttypes = NFS_MAX_LAYOUT_TYPES; 4840 } 4841 4842 for(i = 0; i < fsinfo->nlayouttypes; ++i) 4843 fsinfo->layouttype[i] = be32_to_cpup(p++); 4844 return 0; 4845} 4846 4847/* 4848 * The type of file system exported. 4849 * Note we must ensure that layouttype is set in any non-error case. 4850 */ 4851static int decode_attr_pnfstype(struct xdr_stream *xdr, uint32_t *bitmap, 4852 struct nfs_fsinfo *fsinfo) 4853{ 4854 int status = 0; 4855 4856 dprintk("%s: bitmap is %x\n", __func__, bitmap[1]); 4857 if (unlikely(bitmap[1] & (FATTR4_WORD1_FS_LAYOUT_TYPES - 1U))) 4858 return -EIO; 4859 if (bitmap[1] & FATTR4_WORD1_FS_LAYOUT_TYPES) { 4860 status = decode_pnfs_layout_types(xdr, fsinfo); 4861 bitmap[1] &= ~FATTR4_WORD1_FS_LAYOUT_TYPES; 4862 } 4863 return status; 4864} 4865 4866/* 4867 * The prefered block size for layout directed io 4868 */ 4869static int decode_attr_layout_blksize(struct xdr_stream *xdr, uint32_t *bitmap, 4870 uint32_t *res) 4871{ 4872 __be32 *p; 4873 4874 dprintk("%s: bitmap is %x\n", __func__, bitmap[2]); 4875 *res = 0; 4876 if (bitmap[2] & FATTR4_WORD2_LAYOUT_BLKSIZE) { 4877 p = xdr_inline_decode(xdr, 4); 4878 if (unlikely(!p)) 4879 return -EIO; 4880 *res = be32_to_cpup(p); 4881 bitmap[2] &= ~FATTR4_WORD2_LAYOUT_BLKSIZE; 4882 } 4883 return 0; 4884} 4885 4886/* 4887 * The granularity of a CLONE operation. 4888 */ 4889static int decode_attr_clone_blksize(struct xdr_stream *xdr, uint32_t *bitmap, 4890 uint32_t *res) 4891{ 4892 __be32 *p; 4893 4894 dprintk("%s: bitmap is %x\n", __func__, bitmap[2]); 4895 *res = 0; 4896 if (bitmap[2] & FATTR4_WORD2_CLONE_BLKSIZE) { 4897 p = xdr_inline_decode(xdr, 4); 4898 if (unlikely(!p)) 4899 return -EIO; 4900 *res = be32_to_cpup(p); 4901 bitmap[2] &= ~FATTR4_WORD2_CLONE_BLKSIZE; 4902 } 4903 return 0; 4904} 4905 4906static int decode_attr_change_attr_type(struct xdr_stream *xdr, 4907 uint32_t *bitmap, 4908 enum nfs4_change_attr_type *res) 4909{ 4910 u32 tmp = NFS4_CHANGE_TYPE_IS_UNDEFINED; 4911 4912 dprintk("%s: bitmap is %x\n", __func__, bitmap[2]); 4913 if (bitmap[2] & FATTR4_WORD2_CHANGE_ATTR_TYPE) { 4914 if (xdr_stream_decode_u32(xdr, &tmp)) 4915 return -EIO; 4916 bitmap[2] &= ~FATTR4_WORD2_CHANGE_ATTR_TYPE; 4917 } 4918 4919 switch(tmp) { 4920 case NFS4_CHANGE_TYPE_IS_MONOTONIC_INCR: 4921 case NFS4_CHANGE_TYPE_IS_VERSION_COUNTER: 4922 case NFS4_CHANGE_TYPE_IS_VERSION_COUNTER_NOPNFS: 4923 case NFS4_CHANGE_TYPE_IS_TIME_METADATA: 4924 *res = tmp; 4925 break; 4926 default: 4927 *res = NFS4_CHANGE_TYPE_IS_UNDEFINED; 4928 } 4929 return 0; 4930} 4931 4932static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo) 4933{ 4934 unsigned int savep; 4935 uint32_t attrlen, bitmap[3]; 4936 int status; 4937 4938 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) 4939 goto xdr_error; 4940 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) 4941 goto xdr_error; 4942 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) 4943 goto xdr_error; 4944 4945 fsinfo->rtmult = fsinfo->wtmult = 512; /* ??? */ 4946 4947 if ((status = decode_attr_lease_time(xdr, bitmap, &fsinfo->lease_time)) != 0) 4948 goto xdr_error; 4949 if ((status = decode_attr_maxfilesize(xdr, bitmap, &fsinfo->maxfilesize)) != 0) 4950 goto xdr_error; 4951 if ((status = decode_attr_maxread(xdr, bitmap, &fsinfo->rtmax)) != 0) 4952 goto xdr_error; 4953 fsinfo->rtpref = fsinfo->dtpref = fsinfo->rtmax; 4954 if ((status = decode_attr_maxwrite(xdr, bitmap, &fsinfo->wtmax)) != 0) 4955 goto xdr_error; 4956 fsinfo->wtpref = fsinfo->wtmax; 4957 4958 status = -EIO; 4959 if (unlikely(bitmap[0])) 4960 goto xdr_error; 4961 4962 status = decode_attr_time_delta(xdr, bitmap, &fsinfo->time_delta); 4963 if (status != 0) 4964 goto xdr_error; 4965 status = decode_attr_pnfstype(xdr, bitmap, fsinfo); 4966 if (status != 0) 4967 goto xdr_error; 4968 4969 status = -EIO; 4970 if (unlikely(bitmap[1])) 4971 goto xdr_error; 4972 4973 status = decode_attr_layout_blksize(xdr, bitmap, &fsinfo->blksize); 4974 if (status) 4975 goto xdr_error; 4976 status = decode_attr_clone_blksize(xdr, bitmap, &fsinfo->clone_blksize); 4977 if (status) 4978 goto xdr_error; 4979 4980 status = decode_attr_change_attr_type(xdr, bitmap, 4981 &fsinfo->change_attr_type); 4982 if (status) 4983 goto xdr_error; 4984 4985 status = decode_attr_xattrsupport(xdr, bitmap, 4986 &fsinfo->xattr_support); 4987 if (status) 4988 goto xdr_error; 4989 4990 status = verify_attr_len(xdr, savep, attrlen); 4991xdr_error: 4992 dprintk("%s: xdr returned %d!\n", __func__, -status); 4993 return status; 4994} 4995 4996static int decode_getfh(struct xdr_stream *xdr, struct nfs_fh *fh) 4997{ 4998 __be32 *p; 4999 uint32_t len; 5000 int status; 5001 5002 /* Zero handle first to allow comparisons */ 5003 memset(fh, 0, sizeof(*fh)); 5004 5005 status = decode_op_hdr(xdr, OP_GETFH); 5006 if (status) 5007 return status; 5008 5009 p = xdr_inline_decode(xdr, 4); 5010 if (unlikely(!p)) 5011 return -EIO; 5012 len = be32_to_cpup(p); 5013 if (len > NFS4_FHSIZE || len == 0) { 5014 trace_nfs4_xdr_bad_filehandle(xdr, OP_GETFH, NFS4ERR_BADHANDLE); 5015 return -EREMOTEIO; 5016 } 5017 fh->size = len; 5018 p = xdr_inline_decode(xdr, len); 5019 if (unlikely(!p)) 5020 return -EIO; 5021 memcpy(fh->data, p, len); 5022 return 0; 5023} 5024 5025static int decode_link(struct xdr_stream *xdr, struct nfs4_change_info *cinfo) 5026{ 5027 int status; 5028 5029 status = decode_op_hdr(xdr, OP_LINK); 5030 if (status) 5031 return status; 5032 return decode_change_info(xdr, cinfo); 5033} 5034 5035/* 5036 * We create the owner, so we know a proper owner.id length is 4. 5037 */ 5038static int decode_lock_denied (struct xdr_stream *xdr, struct file_lock *fl) 5039{ 5040 uint64_t offset, length, clientid; 5041 __be32 *p; 5042 uint32_t namelen, type; 5043 5044 p = xdr_inline_decode(xdr, 32); /* read 32 bytes */ 5045 if (unlikely(!p)) 5046 return -EIO; 5047 p = xdr_decode_hyper(p, &offset); /* read 2 8-byte long words */ 5048 p = xdr_decode_hyper(p, &length); 5049 type = be32_to_cpup(p++); /* 4 byte read */ 5050 if (fl != NULL) { /* manipulate file lock */ 5051 fl->fl_start = (loff_t)offset; 5052 fl->fl_end = fl->fl_start + (loff_t)length - 1; 5053 if (length == ~(uint64_t)0) 5054 fl->fl_end = OFFSET_MAX; 5055 fl->c.flc_type = F_WRLCK; 5056 if (type & 1) 5057 fl->c.flc_type = F_RDLCK; 5058 fl->c.flc_pid = 0; 5059 } 5060 p = xdr_decode_hyper(p, &clientid); /* read 8 bytes */ 5061 namelen = be32_to_cpup(p); /* read 4 bytes */ /* have read all 32 bytes now */ 5062 p = xdr_inline_decode(xdr, namelen); /* variable size field */ 5063 if (likely(!p)) 5064 return -EIO; 5065 return -NFS4ERR_DENIED; 5066} 5067 5068static int decode_lock(struct xdr_stream *xdr, struct nfs_lock_res *res) 5069{ 5070 int status; 5071 5072 status = decode_op_hdr(xdr, OP_LOCK); 5073 if (status == -EIO) 5074 goto out; 5075 if (status == 0) { 5076 status = decode_lock_stateid(xdr, &res->stateid); 5077 if (unlikely(status)) 5078 goto out; 5079 } else if (status == -NFS4ERR_DENIED) 5080 status = decode_lock_denied(xdr, NULL); 5081 if (res->open_seqid != NULL) 5082 nfs_increment_open_seqid(status, res->open_seqid); 5083 nfs_increment_lock_seqid(status, res->lock_seqid); 5084out: 5085 return status; 5086} 5087 5088static int decode_lockt(struct xdr_stream *xdr, struct nfs_lockt_res *res) 5089{ 5090 int status; 5091 status = decode_op_hdr(xdr, OP_LOCKT); 5092 if (status == -NFS4ERR_DENIED) 5093 return decode_lock_denied(xdr, res->denied); 5094 return status; 5095} 5096 5097static int decode_locku(struct xdr_stream *xdr, struct nfs_locku_res *res) 5098{ 5099 int status; 5100 5101 status = decode_op_hdr(xdr, OP_LOCKU); 5102 if (status != -EIO) 5103 nfs_increment_lock_seqid(status, res->seqid); 5104 if (status == 0) 5105 status = decode_lock_stateid(xdr, &res->stateid); 5106 return status; 5107} 5108 5109static int decode_release_lockowner(struct xdr_stream *xdr) 5110{ 5111 return decode_op_hdr(xdr, OP_RELEASE_LOCKOWNER); 5112} 5113 5114static int decode_lookup(struct xdr_stream *xdr) 5115{ 5116 return decode_op_hdr(xdr, OP_LOOKUP); 5117} 5118 5119static int decode_lookupp(struct xdr_stream *xdr) 5120{ 5121 return decode_op_hdr(xdr, OP_LOOKUPP); 5122} 5123 5124/* This is too sick! */ 5125static int decode_space_limit(struct xdr_stream *xdr, 5126 unsigned long *pagemod_limit) 5127{ 5128 __be32 *p; 5129 uint32_t limit_type, nblocks, blocksize; 5130 u64 maxsize = 0; 5131 5132 p = xdr_inline_decode(xdr, 12); 5133 if (unlikely(!p)) 5134 return -EIO; 5135 limit_type = be32_to_cpup(p++); 5136 switch (limit_type) { 5137 case NFS4_LIMIT_SIZE: 5138 xdr_decode_hyper(p, &maxsize); 5139 break; 5140 case NFS4_LIMIT_BLOCKS: 5141 nblocks = be32_to_cpup(p++); 5142 blocksize = be32_to_cpup(p); 5143 maxsize = (uint64_t)nblocks * (uint64_t)blocksize; 5144 } 5145 maxsize >>= PAGE_SHIFT; 5146 *pagemod_limit = min_t(u64, maxsize, ULONG_MAX); 5147 return 0; 5148} 5149 5150static int decode_rw_delegation(struct xdr_stream *xdr, 5151 uint32_t delegation_type, 5152 struct nfs_openres *res) 5153{ 5154 __be32 *p; 5155 int status; 5156 5157 status = decode_delegation_stateid(xdr, &res->delegation); 5158 if (unlikely(status)) 5159 return status; 5160 p = xdr_inline_decode(xdr, 4); 5161 if (unlikely(!p)) 5162 return -EIO; 5163 res->do_recall = be32_to_cpup(p); 5164 5165 switch (delegation_type) { 5166 case NFS4_OPEN_DELEGATE_READ: 5167 res->delegation_type = FMODE_READ; 5168 break; 5169 case NFS4_OPEN_DELEGATE_WRITE: 5170 res->delegation_type = FMODE_WRITE|FMODE_READ; 5171 if (decode_space_limit(xdr, &res->pagemod_limit) < 0) 5172 return -EIO; 5173 } 5174 return decode_ace(xdr, NULL); 5175} 5176 5177static int decode_no_delegation(struct xdr_stream *xdr, struct nfs_openres *res) 5178{ 5179 __be32 *p; 5180 uint32_t why_no_delegation; 5181 5182 p = xdr_inline_decode(xdr, 4); 5183 if (unlikely(!p)) 5184 return -EIO; 5185 why_no_delegation = be32_to_cpup(p); 5186 switch (why_no_delegation) { 5187 case WND4_CONTENTION: 5188 case WND4_RESOURCE: 5189 xdr_inline_decode(xdr, 4); 5190 /* Ignore for now */ 5191 } 5192 return 0; 5193} 5194 5195static int decode_delegation(struct xdr_stream *xdr, struct nfs_openres *res) 5196{ 5197 __be32 *p; 5198 uint32_t delegation_type; 5199 5200 p = xdr_inline_decode(xdr, 4); 5201 if (unlikely(!p)) 5202 return -EIO; 5203 delegation_type = be32_to_cpup(p); 5204 res->delegation_type = 0; 5205 switch (delegation_type) { 5206 case NFS4_OPEN_DELEGATE_NONE: 5207 return 0; 5208 case NFS4_OPEN_DELEGATE_READ: 5209 case NFS4_OPEN_DELEGATE_WRITE: 5210 return decode_rw_delegation(xdr, delegation_type, res); 5211 case NFS4_OPEN_DELEGATE_NONE_EXT: 5212 return decode_no_delegation(xdr, res); 5213 } 5214 return -EIO; 5215} 5216 5217static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res) 5218{ 5219 __be32 *p; 5220 uint32_t savewords, bmlen, i; 5221 int status; 5222 5223 if (!__decode_op_hdr(xdr, OP_OPEN, &status)) 5224 return status; 5225 nfs_increment_open_seqid(status, res->seqid); 5226 if (status) 5227 return status; 5228 status = decode_open_stateid(xdr, &res->stateid); 5229 if (unlikely(status)) 5230 return status; 5231 5232 decode_change_info(xdr, &res->cinfo); 5233 5234 p = xdr_inline_decode(xdr, 8); 5235 if (unlikely(!p)) 5236 return -EIO; 5237 res->rflags = be32_to_cpup(p++); 5238 bmlen = be32_to_cpup(p); 5239 if (bmlen > 10) 5240 goto xdr_error; 5241 5242 p = xdr_inline_decode(xdr, bmlen << 2); 5243 if (unlikely(!p)) 5244 return -EIO; 5245 savewords = min_t(uint32_t, bmlen, NFS4_BITMAP_SIZE); 5246 for (i = 0; i < savewords; ++i) 5247 res->attrset[i] = be32_to_cpup(p++); 5248 for (; i < NFS4_BITMAP_SIZE; i++) 5249 res->attrset[i] = 0; 5250 5251 return decode_delegation(xdr, res); 5252xdr_error: 5253 dprintk("%s: Bitmap too large! Length = %u\n", __func__, bmlen); 5254 return -EIO; 5255} 5256 5257static int decode_open_confirm(struct xdr_stream *xdr, struct nfs_open_confirmres *res) 5258{ 5259 int status; 5260 5261 status = decode_op_hdr(xdr, OP_OPEN_CONFIRM); 5262 if (status != -EIO) 5263 nfs_increment_open_seqid(status, res->seqid); 5264 if (!status) 5265 status = decode_open_stateid(xdr, &res->stateid); 5266 return status; 5267} 5268 5269static int decode_open_downgrade(struct xdr_stream *xdr, struct nfs_closeres *res) 5270{ 5271 int status; 5272 5273 status = decode_op_hdr(xdr, OP_OPEN_DOWNGRADE); 5274 if (status != -EIO) 5275 nfs_increment_open_seqid(status, res->seqid); 5276 if (!status) 5277 status = decode_open_stateid(xdr, &res->stateid); 5278 return status; 5279} 5280 5281static int decode_putfh(struct xdr_stream *xdr) 5282{ 5283 return decode_op_hdr(xdr, OP_PUTFH); 5284} 5285 5286static int decode_putrootfh(struct xdr_stream *xdr) 5287{ 5288 return decode_op_hdr(xdr, OP_PUTROOTFH); 5289} 5290 5291static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req, 5292 struct nfs_pgio_res *res) 5293{ 5294 __be32 *p; 5295 uint32_t count, eof, recvd; 5296 int status; 5297 5298 status = decode_op_hdr(xdr, OP_READ); 5299 if (status) 5300 return status; 5301 p = xdr_inline_decode(xdr, 8); 5302 if (unlikely(!p)) 5303 return -EIO; 5304 eof = be32_to_cpup(p++); 5305 count = be32_to_cpup(p); 5306 recvd = xdr_read_pages(xdr, count); 5307 if (count > recvd) { 5308 dprintk("NFS: server cheating in read reply: " 5309 "count %u > recvd %u\n", count, recvd); 5310 count = recvd; 5311 eof = 0; 5312 } 5313 res->eof = eof; 5314 res->count = count; 5315 return 0; 5316} 5317 5318static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs4_readdir_res *readdir) 5319{ 5320 int status; 5321 __be32 verf[2]; 5322 5323 status = decode_op_hdr(xdr, OP_READDIR); 5324 if (!status) 5325 status = decode_verifier(xdr, readdir->verifier.data); 5326 if (unlikely(status)) 5327 return status; 5328 memcpy(verf, readdir->verifier.data, sizeof(verf)); 5329 dprintk("%s: verifier = %08x:%08x\n", 5330 __func__, verf[0], verf[1]); 5331 return xdr_read_pages(xdr, xdr->buf->page_len); 5332} 5333 5334static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req) 5335{ 5336 struct xdr_buf *rcvbuf = &req->rq_rcv_buf; 5337 u32 len, recvd; 5338 __be32 *p; 5339 int status; 5340 5341 status = decode_op_hdr(xdr, OP_READLINK); 5342 if (status) 5343 return status; 5344 5345 /* Convert length of symlink */ 5346 p = xdr_inline_decode(xdr, 4); 5347 if (unlikely(!p)) 5348 return -EIO; 5349 len = be32_to_cpup(p); 5350 if (len >= rcvbuf->page_len || len <= 0) { 5351 dprintk("nfs: server returned giant symlink!\n"); 5352 return -ENAMETOOLONG; 5353 } 5354 recvd = xdr_read_pages(xdr, len); 5355 if (recvd < len) { 5356 dprintk("NFS: server cheating in readlink reply: " 5357 "count %u > recvd %u\n", len, recvd); 5358 return -EIO; 5359 } 5360 /* 5361 * The XDR encode routine has set things up so that 5362 * the link text will be copied directly into the 5363 * buffer. We just have to do overflow-checking, 5364 * and null-terminate the text (the VFS expects 5365 * null-termination). 5366 */ 5367 xdr_terminate_string(rcvbuf, len); 5368 return 0; 5369} 5370 5371static int decode_remove(struct xdr_stream *xdr, struct nfs4_change_info *cinfo) 5372{ 5373 int status; 5374 5375 status = decode_op_hdr(xdr, OP_REMOVE); 5376 if (status) 5377 goto out; 5378 status = decode_change_info(xdr, cinfo); 5379out: 5380 return status; 5381} 5382 5383static int decode_rename(struct xdr_stream *xdr, struct nfs4_change_info *old_cinfo, 5384 struct nfs4_change_info *new_cinfo) 5385{ 5386 int status; 5387 5388 status = decode_op_hdr(xdr, OP_RENAME); 5389 if (status) 5390 goto out; 5391 if ((status = decode_change_info(xdr, old_cinfo))) 5392 goto out; 5393 status = decode_change_info(xdr, new_cinfo); 5394out: 5395 return status; 5396} 5397 5398static int decode_renew(struct xdr_stream *xdr) 5399{ 5400 return decode_op_hdr(xdr, OP_RENEW); 5401} 5402 5403static int 5404decode_restorefh(struct xdr_stream *xdr) 5405{ 5406 return decode_op_hdr(xdr, OP_RESTOREFH); 5407} 5408 5409static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req, 5410 struct nfs_getaclres *res, enum nfs4_acl_type type) 5411{ 5412 unsigned int savep; 5413 uint32_t attrlen, 5414 bitmap[3] = {0}; 5415 int status; 5416 5417 res->acl_len = 0; 5418 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) 5419 goto out; 5420 5421 xdr_enter_page(xdr, xdr->buf->page_len); 5422 5423 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) 5424 goto out; 5425 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) 5426 goto out; 5427 5428 switch (type) { 5429 default: 5430 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACL - 1U))) 5431 return -EIO; 5432 if (!(bitmap[0] & FATTR4_WORD0_ACL)) 5433 return -EOPNOTSUPP; 5434 break; 5435 case NFS4ACL_DACL: 5436 if (unlikely(bitmap[0] || bitmap[1] & (FATTR4_WORD1_DACL - 1U))) 5437 return -EIO; 5438 if (!(bitmap[1] & FATTR4_WORD1_DACL)) 5439 return -EOPNOTSUPP; 5440 break; 5441 case NFS4ACL_SACL: 5442 if (unlikely(bitmap[0] || bitmap[1] & (FATTR4_WORD1_SACL - 1U))) 5443 return -EIO; 5444 if (!(bitmap[1] & FATTR4_WORD1_SACL)) 5445 return -EOPNOTSUPP; 5446 } 5447 5448 /* The bitmap (xdr len + bitmaps) and the attr xdr len words 5449 * are stored with the acl data to handle the problem of 5450 * variable length bitmaps.*/ 5451 res->acl_data_offset = xdr_page_pos(xdr); 5452 res->acl_len = attrlen; 5453 5454 /* Check for receive buffer overflow */ 5455 if (res->acl_len > xdr_stream_remaining(xdr) || 5456 res->acl_len + res->acl_data_offset > xdr->buf->page_len) { 5457 res->acl_flags |= NFS4_ACL_TRUNC; 5458 dprintk("NFS: acl reply: attrlen %u > page_len %zu\n", 5459 attrlen, xdr_stream_remaining(xdr)); 5460 } 5461out: 5462 return status; 5463} 5464 5465static int 5466decode_savefh(struct xdr_stream *xdr) 5467{ 5468 return decode_op_hdr(xdr, OP_SAVEFH); 5469} 5470 5471static int decode_setattr(struct xdr_stream *xdr) 5472{ 5473 int status; 5474 5475 status = decode_op_hdr(xdr, OP_SETATTR); 5476 if (status) 5477 return status; 5478 if (decode_bitmap4(xdr, NULL, 0) >= 0) 5479 return 0; 5480 return -EIO; 5481} 5482 5483static int decode_setclientid(struct xdr_stream *xdr, struct nfs4_setclientid_res *res) 5484{ 5485 __be32 *p; 5486 uint32_t opnum; 5487 int32_t nfserr; 5488 5489 p = xdr_inline_decode(xdr, 8); 5490 if (unlikely(!p)) 5491 return -EIO; 5492 opnum = be32_to_cpup(p++); 5493 if (opnum != OP_SETCLIENTID) { 5494 dprintk("nfs: decode_setclientid: Server returned operation" 5495 " %d\n", opnum); 5496 return -EIO; 5497 } 5498 nfserr = be32_to_cpup(p); 5499 if (nfserr == NFS_OK) { 5500 p = xdr_inline_decode(xdr, 8 + NFS4_VERIFIER_SIZE); 5501 if (unlikely(!p)) 5502 return -EIO; 5503 p = xdr_decode_hyper(p, &res->clientid); 5504 memcpy(res->confirm.data, p, NFS4_VERIFIER_SIZE); 5505 } else if (nfserr == NFSERR_CLID_INUSE) { 5506 uint32_t len; 5507 5508 /* skip netid string */ 5509 p = xdr_inline_decode(xdr, 4); 5510 if (unlikely(!p)) 5511 return -EIO; 5512 len = be32_to_cpup(p); 5513 p = xdr_inline_decode(xdr, len); 5514 if (unlikely(!p)) 5515 return -EIO; 5516 5517 /* skip uaddr string */ 5518 p = xdr_inline_decode(xdr, 4); 5519 if (unlikely(!p)) 5520 return -EIO; 5521 len = be32_to_cpup(p); 5522 p = xdr_inline_decode(xdr, len); 5523 if (unlikely(!p)) 5524 return -EIO; 5525 return -NFSERR_CLID_INUSE; 5526 } else 5527 return nfs4_stat_to_errno(nfserr); 5528 5529 return 0; 5530} 5531 5532static int decode_setclientid_confirm(struct xdr_stream *xdr) 5533{ 5534 return decode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM); 5535} 5536 5537static int decode_write(struct xdr_stream *xdr, struct nfs_pgio_res *res) 5538{ 5539 __be32 *p; 5540 int status; 5541 5542 status = decode_op_hdr(xdr, OP_WRITE); 5543 if (status) 5544 return status; 5545 5546 p = xdr_inline_decode(xdr, 8); 5547 if (unlikely(!p)) 5548 return -EIO; 5549 res->count = be32_to_cpup(p++); 5550 res->verf->committed = be32_to_cpup(p++); 5551 return decode_write_verifier(xdr, &res->verf->verifier); 5552} 5553 5554static int decode_delegreturn(struct xdr_stream *xdr) 5555{ 5556 return decode_op_hdr(xdr, OP_DELEGRETURN); 5557} 5558 5559static int decode_secinfo_gss(struct xdr_stream *xdr, 5560 struct nfs4_secinfo4 *flavor) 5561{ 5562 u32 oid_len; 5563 __be32 *p; 5564 5565 p = xdr_inline_decode(xdr, 4); 5566 if (unlikely(!p)) 5567 return -EIO; 5568 oid_len = be32_to_cpup(p); 5569 if (oid_len > GSS_OID_MAX_LEN) 5570 return -EINVAL; 5571 5572 p = xdr_inline_decode(xdr, oid_len); 5573 if (unlikely(!p)) 5574 return -EIO; 5575 memcpy(flavor->flavor_info.oid.data, p, oid_len); 5576 flavor->flavor_info.oid.len = oid_len; 5577 5578 p = xdr_inline_decode(xdr, 8); 5579 if (unlikely(!p)) 5580 return -EIO; 5581 flavor->flavor_info.qop = be32_to_cpup(p++); 5582 flavor->flavor_info.service = be32_to_cpup(p); 5583 5584 return 0; 5585} 5586 5587static int decode_secinfo_common(struct xdr_stream *xdr, struct nfs4_secinfo_res *res) 5588{ 5589 struct nfs4_secinfo4 *sec_flavor; 5590 unsigned int i, num_flavors; 5591 int status; 5592 __be32 *p; 5593 5594 p = xdr_inline_decode(xdr, 4); 5595 if (unlikely(!p)) 5596 return -EIO; 5597 5598 res->flavors->num_flavors = 0; 5599 num_flavors = be32_to_cpup(p); 5600 5601 for (i = 0; i < num_flavors; i++) { 5602 sec_flavor = &res->flavors->flavors[i]; 5603 if ((char *)&sec_flavor[1] - (char *)res->flavors > PAGE_SIZE) 5604 break; 5605 5606 p = xdr_inline_decode(xdr, 4); 5607 if (unlikely(!p)) 5608 return -EIO; 5609 sec_flavor->flavor = be32_to_cpup(p); 5610 5611 if (sec_flavor->flavor == RPC_AUTH_GSS) { 5612 status = decode_secinfo_gss(xdr, sec_flavor); 5613 if (status) 5614 goto out; 5615 } 5616 res->flavors->num_flavors++; 5617 } 5618 5619 status = 0; 5620out: 5621 return status; 5622} 5623 5624static int decode_secinfo(struct xdr_stream *xdr, struct nfs4_secinfo_res *res) 5625{ 5626 int status = decode_op_hdr(xdr, OP_SECINFO); 5627 if (status) 5628 return status; 5629 return decode_secinfo_common(xdr, res); 5630} 5631 5632#if defined(CONFIG_NFS_V4_1) 5633static int decode_secinfo_no_name(struct xdr_stream *xdr, struct nfs4_secinfo_res *res) 5634{ 5635 int status = decode_op_hdr(xdr, OP_SECINFO_NO_NAME); 5636 if (status) 5637 return status; 5638 return decode_secinfo_common(xdr, res); 5639} 5640 5641static int decode_op_map(struct xdr_stream *xdr, struct nfs4_op_map *op_map) 5642{ 5643 if (xdr_stream_decode_uint32_array(xdr, op_map->u.words, 5644 ARRAY_SIZE(op_map->u.words)) < 0) 5645 return -EIO; 5646 return 0; 5647} 5648 5649static int decode_exchange_id(struct xdr_stream *xdr, 5650 struct nfs41_exchange_id_res *res) 5651{ 5652 __be32 *p; 5653 uint32_t dummy; 5654 char *dummy_str; 5655 int status; 5656 uint32_t impl_id_count; 5657 5658 status = decode_op_hdr(xdr, OP_EXCHANGE_ID); 5659 if (status) 5660 return status; 5661 5662 p = xdr_inline_decode(xdr, 8); 5663 if (unlikely(!p)) 5664 return -EIO; 5665 xdr_decode_hyper(p, &res->clientid); 5666 p = xdr_inline_decode(xdr, 12); 5667 if (unlikely(!p)) 5668 return -EIO; 5669 res->seqid = be32_to_cpup(p++); 5670 res->flags = be32_to_cpup(p++); 5671 5672 res->state_protect.how = be32_to_cpup(p); 5673 switch (res->state_protect.how) { 5674 case SP4_NONE: 5675 break; 5676 case SP4_MACH_CRED: 5677 status = decode_op_map(xdr, &res->state_protect.enforce); 5678 if (status) 5679 return status; 5680 status = decode_op_map(xdr, &res->state_protect.allow); 5681 if (status) 5682 return status; 5683 break; 5684 default: 5685 WARN_ON_ONCE(1); 5686 return -EIO; 5687 } 5688 5689 /* server_owner4.so_minor_id */ 5690 p = xdr_inline_decode(xdr, 8); 5691 if (unlikely(!p)) 5692 return -EIO; 5693 p = xdr_decode_hyper(p, &res->server_owner->minor_id); 5694 5695 /* server_owner4.so_major_id */ 5696 status = decode_opaque_inline(xdr, &dummy, &dummy_str); 5697 if (unlikely(status)) 5698 return status; 5699 memcpy(res->server_owner->major_id, dummy_str, dummy); 5700 res->server_owner->major_id_sz = dummy; 5701 5702 /* server_scope4 */ 5703 status = decode_opaque_inline(xdr, &dummy, &dummy_str); 5704 if (unlikely(status)) 5705 return status; 5706 memcpy(res->server_scope->server_scope, dummy_str, dummy); 5707 res->server_scope->server_scope_sz = dummy; 5708 5709 /* Implementation Id */ 5710 p = xdr_inline_decode(xdr, 4); 5711 if (unlikely(!p)) 5712 return -EIO; 5713 impl_id_count = be32_to_cpup(p++); 5714 5715 if (impl_id_count) { 5716 /* nii_domain */ 5717 status = decode_opaque_inline(xdr, &dummy, &dummy_str); 5718 if (unlikely(status)) 5719 return status; 5720 memcpy(res->impl_id->domain, dummy_str, dummy); 5721 5722 /* nii_name */ 5723 status = decode_opaque_inline(xdr, &dummy, &dummy_str); 5724 if (unlikely(status)) 5725 return status; 5726 memcpy(res->impl_id->name, dummy_str, dummy); 5727 5728 /* nii_date */ 5729 p = xdr_inline_decode(xdr, 12); 5730 if (unlikely(!p)) 5731 return -EIO; 5732 p = xdr_decode_hyper(p, &res->impl_id->date.seconds); 5733 res->impl_id->date.nseconds = be32_to_cpup(p); 5734 5735 /* if there's more than one entry, ignore the rest */ 5736 } 5737 return 0; 5738} 5739 5740static int decode_chan_attrs(struct xdr_stream *xdr, 5741 struct nfs4_channel_attrs *attrs) 5742{ 5743 __be32 *p; 5744 u32 nr_attrs, val; 5745 5746 p = xdr_inline_decode(xdr, 28); 5747 if (unlikely(!p)) 5748 return -EIO; 5749 val = be32_to_cpup(p++); /* headerpadsz */ 5750 if (val) 5751 return -EINVAL; /* no support for header padding yet */ 5752 attrs->max_rqst_sz = be32_to_cpup(p++); 5753 attrs->max_resp_sz = be32_to_cpup(p++); 5754 attrs->max_resp_sz_cached = be32_to_cpup(p++); 5755 attrs->max_ops = be32_to_cpup(p++); 5756 attrs->max_reqs = be32_to_cpup(p++); 5757 nr_attrs = be32_to_cpup(p); 5758 if (unlikely(nr_attrs > 1)) { 5759 printk(KERN_WARNING "NFS: %s: Invalid rdma channel attrs " 5760 "count %u\n", __func__, nr_attrs); 5761 return -EINVAL; 5762 } 5763 if (nr_attrs == 1) { 5764 p = xdr_inline_decode(xdr, 4); /* skip rdma_attrs */ 5765 if (unlikely(!p)) 5766 return -EIO; 5767 } 5768 return 0; 5769} 5770 5771static int decode_sessionid(struct xdr_stream *xdr, struct nfs4_sessionid *sid) 5772{ 5773 return decode_opaque_fixed(xdr, sid->data, NFS4_MAX_SESSIONID_LEN); 5774} 5775 5776static int decode_bind_conn_to_session(struct xdr_stream *xdr, 5777 struct nfs41_bind_conn_to_session_res *res) 5778{ 5779 __be32 *p; 5780 int status; 5781 5782 status = decode_op_hdr(xdr, OP_BIND_CONN_TO_SESSION); 5783 if (!status) 5784 status = decode_sessionid(xdr, &res->sessionid); 5785 if (unlikely(status)) 5786 return status; 5787 5788 /* dir flags, rdma mode bool */ 5789 p = xdr_inline_decode(xdr, 8); 5790 if (unlikely(!p)) 5791 return -EIO; 5792 5793 res->dir = be32_to_cpup(p++); 5794 if (res->dir == 0 || res->dir > NFS4_CDFS4_BOTH) 5795 return -EIO; 5796 if (be32_to_cpup(p) == 0) 5797 res->use_conn_in_rdma_mode = false; 5798 else 5799 res->use_conn_in_rdma_mode = true; 5800 5801 return 0; 5802} 5803 5804static int decode_create_session(struct xdr_stream *xdr, 5805 struct nfs41_create_session_res *res) 5806{ 5807 __be32 *p; 5808 int status; 5809 5810 status = decode_op_hdr(xdr, OP_CREATE_SESSION); 5811 if (!status) 5812 status = decode_sessionid(xdr, &res->sessionid); 5813 if (unlikely(status)) 5814 return status; 5815 5816 /* seqid, flags */ 5817 p = xdr_inline_decode(xdr, 8); 5818 if (unlikely(!p)) 5819 return -EIO; 5820 res->seqid = be32_to_cpup(p++); 5821 res->flags = be32_to_cpup(p); 5822 5823 /* Channel attributes */ 5824 status = decode_chan_attrs(xdr, &res->fc_attrs); 5825 if (!status) 5826 status = decode_chan_attrs(xdr, &res->bc_attrs); 5827 return status; 5828} 5829 5830static int decode_destroy_session(struct xdr_stream *xdr, void *dummy) 5831{ 5832 return decode_op_hdr(xdr, OP_DESTROY_SESSION); 5833} 5834 5835static int decode_destroy_clientid(struct xdr_stream *xdr, void *dummy) 5836{ 5837 return decode_op_hdr(xdr, OP_DESTROY_CLIENTID); 5838} 5839 5840static int decode_reclaim_complete(struct xdr_stream *xdr, void *dummy) 5841{ 5842 return decode_op_hdr(xdr, OP_RECLAIM_COMPLETE); 5843} 5844#endif /* CONFIG_NFS_V4_1 */ 5845 5846static int decode_sequence(struct xdr_stream *xdr, 5847 struct nfs4_sequence_res *res, 5848 struct rpc_rqst *rqstp) 5849{ 5850#if defined(CONFIG_NFS_V4_1) 5851 struct nfs4_session *session; 5852 struct nfs4_sessionid id; 5853 u32 dummy; 5854 int status; 5855 __be32 *p; 5856 5857 if (res->sr_slot == NULL) 5858 return 0; 5859 if (!res->sr_slot->table->session) 5860 return 0; 5861 5862 status = decode_op_hdr(xdr, OP_SEQUENCE); 5863 if (!status) 5864 status = decode_sessionid(xdr, &id); 5865 if (unlikely(status)) 5866 goto out_err; 5867 5868 /* 5869 * If the server returns different values for sessionID, slotID or 5870 * sequence number, the server is looney tunes. 5871 */ 5872 status = -EREMOTEIO; 5873 session = res->sr_slot->table->session; 5874 5875 if (memcmp(id.data, session->sess_id.data, 5876 NFS4_MAX_SESSIONID_LEN)) { 5877 dprintk("%s Invalid session id\n", __func__); 5878 goto out_err; 5879 } 5880 5881 p = xdr_inline_decode(xdr, 20); 5882 if (unlikely(!p)) 5883 goto out_overflow; 5884 5885 /* seqid */ 5886 dummy = be32_to_cpup(p++); 5887 if (dummy != res->sr_slot->seq_nr) { 5888 dprintk("%s Invalid sequence number\n", __func__); 5889 goto out_err; 5890 } 5891 /* slot id */ 5892 dummy = be32_to_cpup(p++); 5893 if (dummy != res->sr_slot->slot_nr) { 5894 dprintk("%s Invalid slot id\n", __func__); 5895 goto out_err; 5896 } 5897 /* highest slot id */ 5898 res->sr_highest_slotid = be32_to_cpup(p++); 5899 /* target highest slot id */ 5900 res->sr_target_highest_slotid = be32_to_cpup(p++); 5901 /* result flags */ 5902 res->sr_status_flags = be32_to_cpup(p); 5903 status = 0; 5904out_err: 5905 res->sr_status = status; 5906 return status; 5907out_overflow: 5908 status = -EIO; 5909 goto out_err; 5910#else /* CONFIG_NFS_V4_1 */ 5911 return 0; 5912#endif /* CONFIG_NFS_V4_1 */ 5913} 5914 5915#if defined(CONFIG_NFS_V4_1) 5916static int decode_layout_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid) 5917{ 5918 stateid->type = NFS4_LAYOUT_STATEID_TYPE; 5919 return decode_stateid(xdr, stateid); 5920} 5921 5922static int decode_getdeviceinfo(struct xdr_stream *xdr, 5923 struct nfs4_getdeviceinfo_res *res) 5924{ 5925 struct pnfs_device *pdev = res->pdev; 5926 __be32 *p; 5927 uint32_t len, type; 5928 int status; 5929 5930 status = decode_op_hdr(xdr, OP_GETDEVICEINFO); 5931 if (status) { 5932 if (status == -ETOOSMALL) { 5933 p = xdr_inline_decode(xdr, 4); 5934 if (unlikely(!p)) 5935 return -EIO; 5936 pdev->mincount = be32_to_cpup(p); 5937 dprintk("%s: Min count too small. mincnt = %u\n", 5938 __func__, pdev->mincount); 5939 } 5940 return status; 5941 } 5942 5943 p = xdr_inline_decode(xdr, 8); 5944 if (unlikely(!p)) 5945 return -EIO; 5946 type = be32_to_cpup(p++); 5947 if (type != pdev->layout_type) { 5948 dprintk("%s: layout mismatch req: %u pdev: %u\n", 5949 __func__, pdev->layout_type, type); 5950 return -EINVAL; 5951 } 5952 /* 5953 * Get the length of the opaque device_addr4. xdr_read_pages places 5954 * the opaque device_addr4 in the xdr_buf->pages (pnfs_device->pages) 5955 * and places the remaining xdr data in xdr_buf->tail 5956 */ 5957 pdev->mincount = be32_to_cpup(p); 5958 if (xdr_read_pages(xdr, pdev->mincount) != pdev->mincount) 5959 return -EIO; 5960 5961 /* Parse notification bitmap, verifying that it is zero. */ 5962 p = xdr_inline_decode(xdr, 4); 5963 if (unlikely(!p)) 5964 return -EIO; 5965 len = be32_to_cpup(p); 5966 if (len) { 5967 uint32_t i; 5968 5969 p = xdr_inline_decode(xdr, 4 * len); 5970 if (unlikely(!p)) 5971 return -EIO; 5972 5973 res->notification = be32_to_cpup(p++); 5974 for (i = 1; i < len; i++) { 5975 if (be32_to_cpup(p++)) { 5976 dprintk("%s: unsupported notification\n", 5977 __func__); 5978 return -EIO; 5979 } 5980 } 5981 } 5982 return 0; 5983} 5984 5985static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req, 5986 struct nfs4_layoutget_res *res) 5987{ 5988 __be32 *p; 5989 int status; 5990 u32 layout_count; 5991 u32 recvd; 5992 5993 status = decode_op_hdr(xdr, OP_LAYOUTGET); 5994 if (status) 5995 goto out; 5996 p = xdr_inline_decode(xdr, 4); 5997 if (unlikely(!p)) 5998 goto out_overflow; 5999 res->return_on_close = be32_to_cpup(p); 6000 decode_layout_stateid(xdr, &res->stateid); 6001 p = xdr_inline_decode(xdr, 4); 6002 if (unlikely(!p)) 6003 goto out_overflow; 6004 layout_count = be32_to_cpup(p); 6005 if (!layout_count) { 6006 dprintk("%s: server responded with empty layout array\n", 6007 __func__); 6008 status = -EINVAL; 6009 goto out; 6010 } 6011 6012 p = xdr_inline_decode(xdr, 28); 6013 if (unlikely(!p)) 6014 goto out_overflow; 6015 p = xdr_decode_hyper(p, &res->range.offset); 6016 p = xdr_decode_hyper(p, &res->range.length); 6017 res->range.iomode = be32_to_cpup(p++); 6018 res->type = be32_to_cpup(p++); 6019 res->layoutp->len = be32_to_cpup(p); 6020 6021 dprintk("%s roff:%lu rlen:%lu riomode:%d, lo_type:0x%x, lo.len:%d\n", 6022 __func__, 6023 (unsigned long)res->range.offset, 6024 (unsigned long)res->range.length, 6025 res->range.iomode, 6026 res->type, 6027 res->layoutp->len); 6028 6029 recvd = xdr_read_pages(xdr, res->layoutp->len); 6030 if (res->layoutp->len > recvd) { 6031 dprintk("NFS: server cheating in layoutget reply: " 6032 "layout len %u > recvd %u\n", 6033 res->layoutp->len, recvd); 6034 status = -EINVAL; 6035 goto out; 6036 } 6037 6038 if (layout_count > 1) { 6039 /* We only handle a length one array at the moment. Any 6040 * further entries are just ignored. Note that this means 6041 * the client may see a response that is less than the 6042 * minimum it requested. 6043 */ 6044 dprintk("%s: server responded with %d layouts, dropping tail\n", 6045 __func__, layout_count); 6046 } 6047 6048out: 6049 res->status = status; 6050 return status; 6051out_overflow: 6052 status = -EIO; 6053 goto out; 6054} 6055 6056static int decode_layoutreturn(struct xdr_stream *xdr, 6057 struct nfs4_layoutreturn_res *res) 6058{ 6059 __be32 *p; 6060 int status; 6061 6062 status = decode_op_hdr(xdr, OP_LAYOUTRETURN); 6063 if (status) 6064 return status; 6065 p = xdr_inline_decode(xdr, 4); 6066 if (unlikely(!p)) 6067 return -EIO; 6068 res->lrs_present = be32_to_cpup(p); 6069 if (res->lrs_present) 6070 status = decode_layout_stateid(xdr, &res->stateid); 6071 else 6072 nfs4_stateid_copy(&res->stateid, &invalid_stateid); 6073 return status; 6074} 6075 6076static int decode_layoutcommit(struct xdr_stream *xdr, 6077 struct rpc_rqst *req, 6078 struct nfs4_layoutcommit_res *res) 6079{ 6080 __be32 *p; 6081 __u32 sizechanged; 6082 int status; 6083 6084 status = decode_op_hdr(xdr, OP_LAYOUTCOMMIT); 6085 res->status = status; 6086 if (status) 6087 return status; 6088 6089 p = xdr_inline_decode(xdr, 4); 6090 if (unlikely(!p)) 6091 return -EIO; 6092 sizechanged = be32_to_cpup(p); 6093 6094 if (sizechanged) { 6095 /* throw away new size */ 6096 p = xdr_inline_decode(xdr, 8); 6097 if (unlikely(!p)) 6098 return -EIO; 6099 } 6100 return 0; 6101} 6102 6103static int decode_test_stateid(struct xdr_stream *xdr, 6104 struct nfs41_test_stateid_res *res) 6105{ 6106 __be32 *p; 6107 int status; 6108 int num_res; 6109 6110 status = decode_op_hdr(xdr, OP_TEST_STATEID); 6111 if (status) 6112 return status; 6113 6114 p = xdr_inline_decode(xdr, 4); 6115 if (unlikely(!p)) 6116 return -EIO; 6117 num_res = be32_to_cpup(p++); 6118 if (num_res != 1) 6119 return -EIO; 6120 6121 p = xdr_inline_decode(xdr, 4); 6122 if (unlikely(!p)) 6123 return -EIO; 6124 res->status = be32_to_cpup(p++); 6125 6126 return status; 6127} 6128 6129static int decode_free_stateid(struct xdr_stream *xdr, 6130 struct nfs41_free_stateid_res *res) 6131{ 6132 res->status = decode_op_hdr(xdr, OP_FREE_STATEID); 6133 return res->status; 6134} 6135#else 6136static inline 6137int decode_layoutreturn(struct xdr_stream *xdr, 6138 struct nfs4_layoutreturn_res *res) 6139{ 6140 return 0; 6141} 6142 6143static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req, 6144 struct nfs4_layoutget_res *res) 6145{ 6146 return 0; 6147} 6148 6149#endif /* CONFIG_NFS_V4_1 */ 6150 6151/* 6152 * END OF "GENERIC" DECODE ROUTINES. 6153 */ 6154 6155/* 6156 * Decode OPEN_DOWNGRADE response 6157 */ 6158static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp, 6159 struct xdr_stream *xdr, 6160 void *data) 6161{ 6162 struct nfs_closeres *res = data; 6163 struct compound_hdr hdr; 6164 int status; 6165 6166 status = decode_compound_hdr(xdr, &hdr); 6167 if (status) 6168 goto out; 6169 status = decode_sequence(xdr, &res->seq_res, rqstp); 6170 if (status) 6171 goto out; 6172 status = decode_putfh(xdr); 6173 if (status) 6174 goto out; 6175 if (res->lr_res) { 6176 status = decode_layoutreturn(xdr, res->lr_res); 6177 res->lr_ret = status; 6178 if (status) 6179 goto out; 6180 } 6181 status = decode_open_downgrade(xdr, res); 6182out: 6183 return status; 6184} 6185 6186/* 6187 * Decode ACCESS response 6188 */ 6189static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6190 void *data) 6191{ 6192 struct nfs4_accessres *res = data; 6193 struct compound_hdr hdr; 6194 int status; 6195 6196 status = decode_compound_hdr(xdr, &hdr); 6197 if (status) 6198 goto out; 6199 status = decode_sequence(xdr, &res->seq_res, rqstp); 6200 if (status) 6201 goto out; 6202 status = decode_putfh(xdr); 6203 if (status != 0) 6204 goto out; 6205 status = decode_access(xdr, &res->supported, &res->access); 6206 if (status != 0) 6207 goto out; 6208 if (res->fattr) 6209 decode_getfattr(xdr, res->fattr, res->server); 6210out: 6211 return status; 6212} 6213 6214/* 6215 * Decode LOOKUP response 6216 */ 6217static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6218 void *data) 6219{ 6220 struct nfs4_lookup_res *res = data; 6221 struct compound_hdr hdr; 6222 int status; 6223 6224 status = decode_compound_hdr(xdr, &hdr); 6225 if (status) 6226 goto out; 6227 status = decode_sequence(xdr, &res->seq_res, rqstp); 6228 if (status) 6229 goto out; 6230 status = decode_putfh(xdr); 6231 if (status) 6232 goto out; 6233 status = decode_lookup(xdr); 6234 if (status) 6235 goto out; 6236 status = decode_getfh(xdr, res->fh); 6237 if (status) 6238 goto out; 6239 status = decode_getfattr(xdr, res->fattr, res->server); 6240out: 6241 return status; 6242} 6243 6244/* 6245 * Decode LOOKUPP response 6246 */ 6247static int nfs4_xdr_dec_lookupp(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6248 void *data) 6249{ 6250 struct nfs4_lookupp_res *res = data; 6251 struct compound_hdr hdr; 6252 int status; 6253 6254 status = decode_compound_hdr(xdr, &hdr); 6255 if (status) 6256 goto out; 6257 status = decode_sequence(xdr, &res->seq_res, rqstp); 6258 if (status) 6259 goto out; 6260 status = decode_putfh(xdr); 6261 if (status) 6262 goto out; 6263 status = decode_lookupp(xdr); 6264 if (status) 6265 goto out; 6266 status = decode_getfh(xdr, res->fh); 6267 if (status) 6268 goto out; 6269 status = decode_getfattr(xdr, res->fattr, res->server); 6270out: 6271 return status; 6272} 6273 6274/* 6275 * Decode LOOKUP_ROOT response 6276 */ 6277static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp, 6278 struct xdr_stream *xdr, 6279 void *data) 6280{ 6281 struct nfs4_lookup_res *res = data; 6282 struct compound_hdr hdr; 6283 int status; 6284 6285 status = decode_compound_hdr(xdr, &hdr); 6286 if (status) 6287 goto out; 6288 status = decode_sequence(xdr, &res->seq_res, rqstp); 6289 if (status) 6290 goto out; 6291 status = decode_putrootfh(xdr); 6292 if (status) 6293 goto out; 6294 status = decode_getfh(xdr, res->fh); 6295 if (status == 0) 6296 status = decode_getfattr(xdr, res->fattr, res->server); 6297out: 6298 return status; 6299} 6300 6301/* 6302 * Decode REMOVE response 6303 */ 6304static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6305 void *data) 6306{ 6307 struct nfs_removeres *res = data; 6308 struct compound_hdr hdr; 6309 int status; 6310 6311 status = decode_compound_hdr(xdr, &hdr); 6312 if (status) 6313 goto out; 6314 status = decode_sequence(xdr, &res->seq_res, rqstp); 6315 if (status) 6316 goto out; 6317 status = decode_putfh(xdr); 6318 if (status) 6319 goto out; 6320 status = decode_remove(xdr, &res->cinfo); 6321out: 6322 return status; 6323} 6324 6325/* 6326 * Decode RENAME response 6327 */ 6328static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6329 void *data) 6330{ 6331 struct nfs_renameres *res = data; 6332 struct compound_hdr hdr; 6333 int status; 6334 6335 status = decode_compound_hdr(xdr, &hdr); 6336 if (status) 6337 goto out; 6338 status = decode_sequence(xdr, &res->seq_res, rqstp); 6339 if (status) 6340 goto out; 6341 status = decode_putfh(xdr); 6342 if (status) 6343 goto out; 6344 status = decode_savefh(xdr); 6345 if (status) 6346 goto out; 6347 status = decode_putfh(xdr); 6348 if (status) 6349 goto out; 6350 status = decode_rename(xdr, &res->old_cinfo, &res->new_cinfo); 6351out: 6352 return status; 6353} 6354 6355/* 6356 * Decode LINK response 6357 */ 6358static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6359 void *data) 6360{ 6361 struct nfs4_link_res *res = data; 6362 struct compound_hdr hdr; 6363 int status; 6364 6365 status = decode_compound_hdr(xdr, &hdr); 6366 if (status) 6367 goto out; 6368 status = decode_sequence(xdr, &res->seq_res, rqstp); 6369 if (status) 6370 goto out; 6371 status = decode_putfh(xdr); 6372 if (status) 6373 goto out; 6374 status = decode_savefh(xdr); 6375 if (status) 6376 goto out; 6377 status = decode_putfh(xdr); 6378 if (status) 6379 goto out; 6380 status = decode_link(xdr, &res->cinfo); 6381 if (status) 6382 goto out; 6383 /* 6384 * Note order: OP_LINK leaves the directory as the current 6385 * filehandle. 6386 */ 6387 status = decode_restorefh(xdr); 6388 if (status) 6389 goto out; 6390 decode_getfattr(xdr, res->fattr, res->server); 6391out: 6392 return status; 6393} 6394 6395/* 6396 * Decode CREATE response 6397 */ 6398static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6399 void *data) 6400{ 6401 struct nfs4_create_res *res = data; 6402 struct compound_hdr hdr; 6403 int status; 6404 6405 status = decode_compound_hdr(xdr, &hdr); 6406 if (status) 6407 goto out; 6408 status = decode_sequence(xdr, &res->seq_res, rqstp); 6409 if (status) 6410 goto out; 6411 status = decode_putfh(xdr); 6412 if (status) 6413 goto out; 6414 status = decode_create(xdr, &res->dir_cinfo); 6415 if (status) 6416 goto out; 6417 status = decode_getfh(xdr, res->fh); 6418 if (status) 6419 goto out; 6420 decode_getfattr(xdr, res->fattr, res->server); 6421out: 6422 return status; 6423} 6424 6425/* 6426 * Decode SYMLINK response 6427 */ 6428static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6429 void *res) 6430{ 6431 return nfs4_xdr_dec_create(rqstp, xdr, res); 6432} 6433 6434/* 6435 * Decode GETATTR response 6436 */ 6437static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6438 void *data) 6439{ 6440 struct nfs4_getattr_res *res = data; 6441 struct compound_hdr hdr; 6442 int status; 6443 6444 status = decode_compound_hdr(xdr, &hdr); 6445 if (status) 6446 goto out; 6447 status = decode_sequence(xdr, &res->seq_res, rqstp); 6448 if (status) 6449 goto out; 6450 status = decode_putfh(xdr); 6451 if (status) 6452 goto out; 6453 status = decode_getfattr(xdr, res->fattr, res->server); 6454out: 6455 return status; 6456} 6457 6458/* 6459 * Encode an SETACL request 6460 */ 6461static void nfs4_xdr_enc_setacl(struct rpc_rqst *req, struct xdr_stream *xdr, 6462 const void *data) 6463{ 6464 const struct nfs_setaclargs *args = data; 6465 struct compound_hdr hdr = { 6466 .minorversion = nfs4_xdr_minorversion(&args->seq_args), 6467 }; 6468 6469 encode_compound_hdr(xdr, req, &hdr); 6470 encode_sequence(xdr, &args->seq_args, &hdr); 6471 encode_putfh(xdr, args->fh, &hdr); 6472 encode_setacl(xdr, args, &hdr); 6473 encode_nops(&hdr); 6474} 6475 6476/* 6477 * Decode SETACL response 6478 */ 6479static int 6480nfs4_xdr_dec_setacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6481 void *data) 6482{ 6483 struct nfs_setaclres *res = data; 6484 struct compound_hdr hdr; 6485 int status; 6486 6487 status = decode_compound_hdr(xdr, &hdr); 6488 if (status) 6489 goto out; 6490 status = decode_sequence(xdr, &res->seq_res, rqstp); 6491 if (status) 6492 goto out; 6493 status = decode_putfh(xdr); 6494 if (status) 6495 goto out; 6496 status = decode_setattr(xdr); 6497out: 6498 return status; 6499} 6500 6501/* 6502 * Decode GETACL response 6503 */ 6504static int 6505nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6506 void *data) 6507{ 6508 struct nfs_getaclres *res = data; 6509 struct compound_hdr hdr; 6510 int status; 6511 6512 if (res->acl_scratch != NULL) 6513 xdr_set_scratch_page(xdr, res->acl_scratch); 6514 status = decode_compound_hdr(xdr, &hdr); 6515 if (status) 6516 goto out; 6517 status = decode_sequence(xdr, &res->seq_res, rqstp); 6518 if (status) 6519 goto out; 6520 status = decode_putfh(xdr); 6521 if (status) 6522 goto out; 6523 status = decode_getacl(xdr, rqstp, res, res->acl_type); 6524 6525out: 6526 return status; 6527} 6528 6529/* 6530 * Decode CLOSE response 6531 */ 6532static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6533 void *data) 6534{ 6535 struct nfs_closeres *res = data; 6536 struct compound_hdr hdr; 6537 int status; 6538 6539 status = decode_compound_hdr(xdr, &hdr); 6540 if (status) 6541 goto out; 6542 status = decode_sequence(xdr, &res->seq_res, rqstp); 6543 if (status) 6544 goto out; 6545 status = decode_putfh(xdr); 6546 if (status) 6547 goto out; 6548 if (res->lr_res) { 6549 status = decode_layoutreturn(xdr, res->lr_res); 6550 res->lr_ret = status; 6551 if (status) 6552 goto out; 6553 } 6554 if (res->fattr != NULL) { 6555 status = decode_getfattr(xdr, res->fattr, res->server); 6556 if (status != 0) 6557 goto out; 6558 } 6559 status = decode_close(xdr, res); 6560out: 6561 return status; 6562} 6563 6564/* 6565 * Decode OPEN response 6566 */ 6567static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6568 void *data) 6569{ 6570 struct nfs_openres *res = data; 6571 struct compound_hdr hdr; 6572 int status; 6573 6574 status = decode_compound_hdr(xdr, &hdr); 6575 if (status) 6576 goto out; 6577 status = decode_sequence(xdr, &res->seq_res, rqstp); 6578 if (status) 6579 goto out; 6580 status = decode_putfh(xdr); 6581 if (status) 6582 goto out; 6583 status = decode_open(xdr, res); 6584 if (status) 6585 goto out; 6586 status = decode_getfh(xdr, &res->fh); 6587 if (status) 6588 goto out; 6589 if (res->access_request) 6590 decode_access(xdr, &res->access_supported, &res->access_result); 6591 decode_getfattr(xdr, res->f_attr, res->server); 6592 if (res->lg_res) 6593 decode_layoutget(xdr, rqstp, res->lg_res); 6594out: 6595 return status; 6596} 6597 6598/* 6599 * Decode OPEN_CONFIRM response 6600 */ 6601static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp, 6602 struct xdr_stream *xdr, 6603 void *data) 6604{ 6605 struct nfs_open_confirmres *res = data; 6606 struct compound_hdr hdr; 6607 int status; 6608 6609 status = decode_compound_hdr(xdr, &hdr); 6610 if (status) 6611 goto out; 6612 status = decode_putfh(xdr); 6613 if (status) 6614 goto out; 6615 status = decode_open_confirm(xdr, res); 6616out: 6617 return status; 6618} 6619 6620/* 6621 * Decode OPEN response 6622 */ 6623static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp, 6624 struct xdr_stream *xdr, 6625 void *data) 6626{ 6627 struct nfs_openres *res = data; 6628 struct compound_hdr hdr; 6629 int status; 6630 6631 status = decode_compound_hdr(xdr, &hdr); 6632 if (status) 6633 goto out; 6634 status = decode_sequence(xdr, &res->seq_res, rqstp); 6635 if (status) 6636 goto out; 6637 status = decode_putfh(xdr); 6638 if (status) 6639 goto out; 6640 status = decode_open(xdr, res); 6641 if (status) 6642 goto out; 6643 if (res->access_request) 6644 decode_access(xdr, &res->access_supported, &res->access_result); 6645 decode_getfattr(xdr, res->f_attr, res->server); 6646 if (res->lg_res) 6647 decode_layoutget(xdr, rqstp, res->lg_res); 6648out: 6649 return status; 6650} 6651 6652/* 6653 * Decode SETATTR response 6654 */ 6655static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp, 6656 struct xdr_stream *xdr, 6657 void *data) 6658{ 6659 struct nfs_setattrres *res = data; 6660 struct compound_hdr hdr; 6661 int status; 6662 6663 status = decode_compound_hdr(xdr, &hdr); 6664 if (status) 6665 goto out; 6666 status = decode_sequence(xdr, &res->seq_res, rqstp); 6667 if (status) 6668 goto out; 6669 status = decode_putfh(xdr); 6670 if (status) 6671 goto out; 6672 status = decode_setattr(xdr); 6673 if (status) 6674 goto out; 6675 decode_getfattr(xdr, res->fattr, res->server); 6676out: 6677 return status; 6678} 6679 6680/* 6681 * Decode LOCK response 6682 */ 6683static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6684 void *data) 6685{ 6686 struct nfs_lock_res *res = data; 6687 struct compound_hdr hdr; 6688 int status; 6689 6690 status = decode_compound_hdr(xdr, &hdr); 6691 if (status) 6692 goto out; 6693 status = decode_sequence(xdr, &res->seq_res, rqstp); 6694 if (status) 6695 goto out; 6696 status = decode_putfh(xdr); 6697 if (status) 6698 goto out; 6699 status = decode_lock(xdr, res); 6700out: 6701 return status; 6702} 6703 6704/* 6705 * Decode LOCKT response 6706 */ 6707static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6708 void *data) 6709{ 6710 struct nfs_lockt_res *res = data; 6711 struct compound_hdr hdr; 6712 int status; 6713 6714 status = decode_compound_hdr(xdr, &hdr); 6715 if (status) 6716 goto out; 6717 status = decode_sequence(xdr, &res->seq_res, rqstp); 6718 if (status) 6719 goto out; 6720 status = decode_putfh(xdr); 6721 if (status) 6722 goto out; 6723 status = decode_lockt(xdr, res); 6724out: 6725 return status; 6726} 6727 6728/* 6729 * Decode LOCKU response 6730 */ 6731static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6732 void *data) 6733{ 6734 struct nfs_locku_res *res = data; 6735 struct compound_hdr hdr; 6736 int status; 6737 6738 status = decode_compound_hdr(xdr, &hdr); 6739 if (status) 6740 goto out; 6741 status = decode_sequence(xdr, &res->seq_res, rqstp); 6742 if (status) 6743 goto out; 6744 status = decode_putfh(xdr); 6745 if (status) 6746 goto out; 6747 status = decode_locku(xdr, res); 6748out: 6749 return status; 6750} 6751 6752static int nfs4_xdr_dec_release_lockowner(struct rpc_rqst *rqstp, 6753 struct xdr_stream *xdr, void *dummy) 6754{ 6755 struct compound_hdr hdr; 6756 int status; 6757 6758 status = decode_compound_hdr(xdr, &hdr); 6759 if (!status) 6760 status = decode_release_lockowner(xdr); 6761 return status; 6762} 6763 6764/* 6765 * Decode READLINK response 6766 */ 6767static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp, 6768 struct xdr_stream *xdr, 6769 void *data) 6770{ 6771 struct nfs4_readlink_res *res = data; 6772 struct compound_hdr hdr; 6773 int status; 6774 6775 status = decode_compound_hdr(xdr, &hdr); 6776 if (status) 6777 goto out; 6778 status = decode_sequence(xdr, &res->seq_res, rqstp); 6779 if (status) 6780 goto out; 6781 status = decode_putfh(xdr); 6782 if (status) 6783 goto out; 6784 status = decode_readlink(xdr, rqstp); 6785out: 6786 return status; 6787} 6788 6789/* 6790 * Decode READDIR response 6791 */ 6792static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6793 void *data) 6794{ 6795 struct nfs4_readdir_res *res = data; 6796 struct compound_hdr hdr; 6797 int status; 6798 6799 status = decode_compound_hdr(xdr, &hdr); 6800 if (status) 6801 goto out; 6802 status = decode_sequence(xdr, &res->seq_res, rqstp); 6803 if (status) 6804 goto out; 6805 status = decode_putfh(xdr); 6806 if (status) 6807 goto out; 6808 status = decode_readdir(xdr, rqstp, res); 6809out: 6810 return status; 6811} 6812 6813/* 6814 * Decode Read response 6815 */ 6816static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6817 void *data) 6818{ 6819 struct nfs_pgio_res *res = data; 6820 struct compound_hdr hdr; 6821 int status; 6822 6823 status = decode_compound_hdr(xdr, &hdr); 6824 res->op_status = hdr.status; 6825 if (status) 6826 goto out; 6827 status = decode_sequence(xdr, &res->seq_res, rqstp); 6828 if (status) 6829 goto out; 6830 status = decode_putfh(xdr); 6831 if (status) 6832 goto out; 6833 status = decode_read(xdr, rqstp, res); 6834 if (!status) 6835 status = res->count; 6836out: 6837 return status; 6838} 6839 6840/* 6841 * Decode WRITE response 6842 */ 6843static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6844 void *data) 6845{ 6846 struct nfs_pgio_res *res = data; 6847 struct compound_hdr hdr; 6848 int status; 6849 6850 status = decode_compound_hdr(xdr, &hdr); 6851 res->op_status = hdr.status; 6852 if (status) 6853 goto out; 6854 status = decode_sequence(xdr, &res->seq_res, rqstp); 6855 if (status) 6856 goto out; 6857 status = decode_putfh(xdr); 6858 if (status) 6859 goto out; 6860 status = decode_write(xdr, res); 6861 if (status) 6862 goto out; 6863 if (res->fattr) 6864 decode_getfattr(xdr, res->fattr, res->server); 6865 if (!status) 6866 status = res->count; 6867out: 6868 return status; 6869} 6870 6871/* 6872 * Decode COMMIT response 6873 */ 6874static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6875 void *data) 6876{ 6877 struct nfs_commitres *res = data; 6878 struct compound_hdr hdr; 6879 int status; 6880 6881 status = decode_compound_hdr(xdr, &hdr); 6882 res->op_status = hdr.status; 6883 if (status) 6884 goto out; 6885 status = decode_sequence(xdr, &res->seq_res, rqstp); 6886 if (status) 6887 goto out; 6888 status = decode_putfh(xdr); 6889 if (status) 6890 goto out; 6891 status = decode_commit(xdr, res); 6892out: 6893 return status; 6894} 6895 6896/* 6897 * Decode FSINFO response 6898 */ 6899static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr, 6900 void *data) 6901{ 6902 struct nfs4_fsinfo_res *res = data; 6903 struct compound_hdr hdr; 6904 int status; 6905 6906 status = decode_compound_hdr(xdr, &hdr); 6907 if (!status) 6908 status = decode_sequence(xdr, &res->seq_res, req); 6909 if (!status) 6910 status = decode_putfh(xdr); 6911 if (!status) 6912 status = decode_fsinfo(xdr, res->fsinfo); 6913 return status; 6914} 6915 6916/* 6917 * Decode PATHCONF response 6918 */ 6919static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr, 6920 void *data) 6921{ 6922 struct nfs4_pathconf_res *res = data; 6923 struct compound_hdr hdr; 6924 int status; 6925 6926 status = decode_compound_hdr(xdr, &hdr); 6927 if (!status) 6928 status = decode_sequence(xdr, &res->seq_res, req); 6929 if (!status) 6930 status = decode_putfh(xdr); 6931 if (!status) 6932 status = decode_pathconf(xdr, res->pathconf); 6933 return status; 6934} 6935 6936/* 6937 * Decode STATFS response 6938 */ 6939static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, struct xdr_stream *xdr, 6940 void *data) 6941{ 6942 struct nfs4_statfs_res *res = data; 6943 struct compound_hdr hdr; 6944 int status; 6945 6946 status = decode_compound_hdr(xdr, &hdr); 6947 if (!status) 6948 status = decode_sequence(xdr, &res->seq_res, req); 6949 if (!status) 6950 status = decode_putfh(xdr); 6951 if (!status) 6952 status = decode_statfs(xdr, res->fsstat); 6953 return status; 6954} 6955 6956/* 6957 * Decode GETATTR_BITMAP response 6958 */ 6959static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req, 6960 struct xdr_stream *xdr, 6961 void *data) 6962{ 6963 struct nfs4_server_caps_res *res = data; 6964 struct compound_hdr hdr; 6965 int status; 6966 6967 status = decode_compound_hdr(xdr, &hdr); 6968 if (status) 6969 goto out; 6970 status = decode_sequence(xdr, &res->seq_res, req); 6971 if (status) 6972 goto out; 6973 status = decode_putfh(xdr); 6974 if (status) 6975 goto out; 6976 status = decode_server_caps(xdr, res); 6977out: 6978 return status; 6979} 6980 6981/* 6982 * Decode RENEW response 6983 */ 6984static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, struct xdr_stream *xdr, 6985 void *__unused) 6986{ 6987 struct compound_hdr hdr; 6988 int status; 6989 6990 status = decode_compound_hdr(xdr, &hdr); 6991 if (!status) 6992 status = decode_renew(xdr); 6993 return status; 6994} 6995 6996/* 6997 * Decode SETCLIENTID response 6998 */ 6999static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req, 7000 struct xdr_stream *xdr, 7001 void *data) 7002{ 7003 struct nfs4_setclientid_res *res = data; 7004 struct compound_hdr hdr; 7005 int status; 7006 7007 status = decode_compound_hdr(xdr, &hdr); 7008 if (!status) 7009 status = decode_setclientid(xdr, res); 7010 return status; 7011} 7012 7013/* 7014 * Decode SETCLIENTID_CONFIRM response 7015 */ 7016static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req, 7017 struct xdr_stream *xdr, 7018 void *data) 7019{ 7020 struct compound_hdr hdr; 7021 int status; 7022 7023 status = decode_compound_hdr(xdr, &hdr); 7024 if (!status) 7025 status = decode_setclientid_confirm(xdr); 7026 return status; 7027} 7028 7029/* 7030 * Decode DELEGRETURN response 7031 */ 7032static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp, 7033 struct xdr_stream *xdr, 7034 void *data) 7035{ 7036 struct nfs4_delegreturnres *res = data; 7037 struct compound_hdr hdr; 7038 int status; 7039 7040 status = decode_compound_hdr(xdr, &hdr); 7041 if (status) 7042 goto out; 7043 status = decode_sequence(xdr, &res->seq_res, rqstp); 7044 if (status) 7045 goto out; 7046 status = decode_putfh(xdr); 7047 if (status != 0) 7048 goto out; 7049 if (res->lr_res) { 7050 status = decode_layoutreturn(xdr, res->lr_res); 7051 res->lr_ret = status; 7052 if (status) 7053 goto out; 7054 } 7055 if (res->fattr) { 7056 status = decode_getfattr(xdr, res->fattr, res->server); 7057 if (status != 0) 7058 goto out; 7059 } 7060 status = decode_delegreturn(xdr); 7061out: 7062 return status; 7063} 7064 7065/* 7066 * Decode FS_LOCATIONS response 7067 */ 7068static int nfs4_xdr_dec_fs_locations(struct rpc_rqst *req, 7069 struct xdr_stream *xdr, 7070 void *data) 7071{ 7072 struct nfs4_fs_locations_res *res = data; 7073 struct compound_hdr hdr; 7074 int status; 7075 7076 status = decode_compound_hdr(xdr, &hdr); 7077 if (status) 7078 goto out; 7079 status = decode_sequence(xdr, &res->seq_res, req); 7080 if (status) 7081 goto out; 7082 status = decode_putfh(xdr); 7083 if (status) 7084 goto out; 7085 if (res->migration) { 7086 xdr_enter_page(xdr, PAGE_SIZE); 7087 status = decode_getfattr_generic(xdr, 7088 res->fs_locations->fattr, 7089 NULL, res->fs_locations, 7090 res->fs_locations->server); 7091 if (status) 7092 goto out; 7093 if (res->renew) 7094 status = decode_renew(xdr); 7095 } else { 7096 status = decode_lookup(xdr); 7097 if (status) 7098 goto out; 7099 xdr_enter_page(xdr, PAGE_SIZE); 7100 status = decode_getfattr_generic(xdr, 7101 res->fs_locations->fattr, 7102 NULL, res->fs_locations, 7103 res->fs_locations->server); 7104 } 7105out: 7106 return status; 7107} 7108 7109/* 7110 * Decode SECINFO response 7111 */ 7112static int nfs4_xdr_dec_secinfo(struct rpc_rqst *rqstp, 7113 struct xdr_stream *xdr, 7114 void *data) 7115{ 7116 struct nfs4_secinfo_res *res = data; 7117 struct compound_hdr hdr; 7118 int status; 7119 7120 status = decode_compound_hdr(xdr, &hdr); 7121 if (status) 7122 goto out; 7123 status = decode_sequence(xdr, &res->seq_res, rqstp); 7124 if (status) 7125 goto out; 7126 status = decode_putfh(xdr); 7127 if (status) 7128 goto out; 7129 status = decode_secinfo(xdr, res); 7130out: 7131 return status; 7132} 7133 7134/* 7135 * Decode FSID_PRESENT response 7136 */ 7137static int nfs4_xdr_dec_fsid_present(struct rpc_rqst *rqstp, 7138 struct xdr_stream *xdr, 7139 void *data) 7140{ 7141 struct nfs4_fsid_present_res *res = data; 7142 struct compound_hdr hdr; 7143 int status; 7144 7145 status = decode_compound_hdr(xdr, &hdr); 7146 if (status) 7147 goto out; 7148 status = decode_sequence(xdr, &res->seq_res, rqstp); 7149 if (status) 7150 goto out; 7151 status = decode_putfh(xdr); 7152 if (status) 7153 goto out; 7154 status = decode_getfh(xdr, res->fh); 7155 if (status) 7156 goto out; 7157 if (res->renew) 7158 status = decode_renew(xdr); 7159out: 7160 return status; 7161} 7162 7163#if defined(CONFIG_NFS_V4_1) 7164/* 7165 * Decode BIND_CONN_TO_SESSION response 7166 */ 7167static int nfs4_xdr_dec_bind_conn_to_session(struct rpc_rqst *rqstp, 7168 struct xdr_stream *xdr, 7169 void *res) 7170{ 7171 struct compound_hdr hdr; 7172 int status; 7173 7174 status = decode_compound_hdr(xdr, &hdr); 7175 if (!status) 7176 status = decode_bind_conn_to_session(xdr, res); 7177 return status; 7178} 7179 7180/* 7181 * Decode EXCHANGE_ID response 7182 */ 7183static int nfs4_xdr_dec_exchange_id(struct rpc_rqst *rqstp, 7184 struct xdr_stream *xdr, 7185 void *res) 7186{ 7187 struct compound_hdr hdr; 7188 int status; 7189 7190 status = decode_compound_hdr(xdr, &hdr); 7191 if (!status) 7192 status = decode_exchange_id(xdr, res); 7193 return status; 7194} 7195 7196/* 7197 * Decode CREATE_SESSION response 7198 */ 7199static int nfs4_xdr_dec_create_session(struct rpc_rqst *rqstp, 7200 struct xdr_stream *xdr, 7201 void *res) 7202{ 7203 struct compound_hdr hdr; 7204 int status; 7205 7206 status = decode_compound_hdr(xdr, &hdr); 7207 if (!status) 7208 status = decode_create_session(xdr, res); 7209 return status; 7210} 7211 7212/* 7213 * Decode DESTROY_SESSION response 7214 */ 7215static int nfs4_xdr_dec_destroy_session(struct rpc_rqst *rqstp, 7216 struct xdr_stream *xdr, 7217 void *res) 7218{ 7219 struct compound_hdr hdr; 7220 int status; 7221 7222 status = decode_compound_hdr(xdr, &hdr); 7223 if (!status) 7224 status = decode_destroy_session(xdr, res); 7225 return status; 7226} 7227 7228/* 7229 * Decode DESTROY_CLIENTID response 7230 */ 7231static int nfs4_xdr_dec_destroy_clientid(struct rpc_rqst *rqstp, 7232 struct xdr_stream *xdr, 7233 void *res) 7234{ 7235 struct compound_hdr hdr; 7236 int status; 7237 7238 status = decode_compound_hdr(xdr, &hdr); 7239 if (!status) 7240 status = decode_destroy_clientid(xdr, res); 7241 return status; 7242} 7243 7244/* 7245 * Decode SEQUENCE response 7246 */ 7247static int nfs4_xdr_dec_sequence(struct rpc_rqst *rqstp, 7248 struct xdr_stream *xdr, 7249 void *res) 7250{ 7251 struct compound_hdr hdr; 7252 int status; 7253 7254 status = decode_compound_hdr(xdr, &hdr); 7255 if (!status) 7256 status = decode_sequence(xdr, res, rqstp); 7257 return status; 7258} 7259 7260#endif 7261 7262/* 7263 * Decode GET_LEASE_TIME response 7264 */ 7265static int nfs4_xdr_dec_get_lease_time(struct rpc_rqst *rqstp, 7266 struct xdr_stream *xdr, 7267 void *data) 7268{ 7269 struct nfs4_get_lease_time_res *res = data; 7270 struct compound_hdr hdr; 7271 int status; 7272 7273 status = decode_compound_hdr(xdr, &hdr); 7274 if (!status) 7275 status = decode_sequence(xdr, &res->lr_seq_res, rqstp); 7276 if (!status) 7277 status = decode_putrootfh(xdr); 7278 if (!status) 7279 status = decode_fsinfo(xdr, res->lr_fsinfo); 7280 return status; 7281} 7282 7283#ifdef CONFIG_NFS_V4_1 7284 7285/* 7286 * Decode RECLAIM_COMPLETE response 7287 */ 7288static int nfs4_xdr_dec_reclaim_complete(struct rpc_rqst *rqstp, 7289 struct xdr_stream *xdr, 7290 void *data) 7291{ 7292 struct nfs41_reclaim_complete_res *res = data; 7293 struct compound_hdr hdr; 7294 int status; 7295 7296 status = decode_compound_hdr(xdr, &hdr); 7297 if (!status) 7298 status = decode_sequence(xdr, &res->seq_res, rqstp); 7299 if (!status) 7300 status = decode_reclaim_complete(xdr, NULL); 7301 return status; 7302} 7303 7304/* 7305 * Decode GETDEVINFO response 7306 */ 7307static int nfs4_xdr_dec_getdeviceinfo(struct rpc_rqst *rqstp, 7308 struct xdr_stream *xdr, 7309 void *data) 7310{ 7311 struct nfs4_getdeviceinfo_res *res = data; 7312 struct compound_hdr hdr; 7313 int status; 7314 7315 status = decode_compound_hdr(xdr, &hdr); 7316 if (status != 0) 7317 goto out; 7318 status = decode_sequence(xdr, &res->seq_res, rqstp); 7319 if (status != 0) 7320 goto out; 7321 status = decode_getdeviceinfo(xdr, res); 7322out: 7323 return status; 7324} 7325 7326/* 7327 * Decode LAYOUTGET response 7328 */ 7329static int nfs4_xdr_dec_layoutget(struct rpc_rqst *rqstp, 7330 struct xdr_stream *xdr, 7331 void *data) 7332{ 7333 struct nfs4_layoutget_res *res = data; 7334 struct compound_hdr hdr; 7335 int status; 7336 7337 status = decode_compound_hdr(xdr, &hdr); 7338 if (status) 7339 goto out; 7340 status = decode_sequence(xdr, &res->seq_res, rqstp); 7341 if (status) 7342 goto out; 7343 status = decode_putfh(xdr); 7344 if (status) 7345 goto out; 7346 status = decode_layoutget(xdr, rqstp, res); 7347out: 7348 return status; 7349} 7350 7351/* 7352 * Decode LAYOUTRETURN response 7353 */ 7354static int nfs4_xdr_dec_layoutreturn(struct rpc_rqst *rqstp, 7355 struct xdr_stream *xdr, 7356 void *data) 7357{ 7358 struct nfs4_layoutreturn_res *res = data; 7359 struct compound_hdr hdr; 7360 int status; 7361 7362 status = decode_compound_hdr(xdr, &hdr); 7363 if (status) 7364 goto out; 7365 status = decode_sequence(xdr, &res->seq_res, rqstp); 7366 if (status) 7367 goto out; 7368 status = decode_putfh(xdr); 7369 if (status) 7370 goto out; 7371 status = decode_layoutreturn(xdr, res); 7372out: 7373 return status; 7374} 7375 7376/* 7377 * Decode LAYOUTCOMMIT response 7378 */ 7379static int nfs4_xdr_dec_layoutcommit(struct rpc_rqst *rqstp, 7380 struct xdr_stream *xdr, 7381 void *data) 7382{ 7383 struct nfs4_layoutcommit_res *res = data; 7384 struct compound_hdr hdr; 7385 int status; 7386 7387 status = decode_compound_hdr(xdr, &hdr); 7388 if (status) 7389 goto out; 7390 status = decode_sequence(xdr, &res->seq_res, rqstp); 7391 if (status) 7392 goto out; 7393 status = decode_putfh(xdr); 7394 if (status) 7395 goto out; 7396 status = decode_layoutcommit(xdr, rqstp, res); 7397 if (status) 7398 goto out; 7399 decode_getfattr(xdr, res->fattr, res->server); 7400out: 7401 return status; 7402} 7403 7404/* 7405 * Decode SECINFO_NO_NAME response 7406 */ 7407static int nfs4_xdr_dec_secinfo_no_name(struct rpc_rqst *rqstp, 7408 struct xdr_stream *xdr, 7409 void *data) 7410{ 7411 struct nfs4_secinfo_res *res = data; 7412 struct compound_hdr hdr; 7413 int status; 7414 7415 status = decode_compound_hdr(xdr, &hdr); 7416 if (status) 7417 goto out; 7418 status = decode_sequence(xdr, &res->seq_res, rqstp); 7419 if (status) 7420 goto out; 7421 status = decode_putrootfh(xdr); 7422 if (status) 7423 goto out; 7424 status = decode_secinfo_no_name(xdr, res); 7425out: 7426 return status; 7427} 7428 7429/* 7430 * Decode TEST_STATEID response 7431 */ 7432static int nfs4_xdr_dec_test_stateid(struct rpc_rqst *rqstp, 7433 struct xdr_stream *xdr, 7434 void *data) 7435{ 7436 struct nfs41_test_stateid_res *res = data; 7437 struct compound_hdr hdr; 7438 int status; 7439 7440 status = decode_compound_hdr(xdr, &hdr); 7441 if (status) 7442 goto out; 7443 status = decode_sequence(xdr, &res->seq_res, rqstp); 7444 if (status) 7445 goto out; 7446 status = decode_test_stateid(xdr, res); 7447out: 7448 return status; 7449} 7450 7451/* 7452 * Decode FREE_STATEID response 7453 */ 7454static int nfs4_xdr_dec_free_stateid(struct rpc_rqst *rqstp, 7455 struct xdr_stream *xdr, 7456 void *data) 7457{ 7458 struct nfs41_free_stateid_res *res = data; 7459 struct compound_hdr hdr; 7460 int status; 7461 7462 status = decode_compound_hdr(xdr, &hdr); 7463 if (status) 7464 goto out; 7465 status = decode_sequence(xdr, &res->seq_res, rqstp); 7466 if (status) 7467 goto out; 7468 status = decode_free_stateid(xdr, res); 7469out: 7470 return status; 7471} 7472#endif /* CONFIG_NFS_V4_1 */ 7473 7474/** 7475 * nfs4_decode_dirent - Decode a single NFSv4 directory entry stored in 7476 * the local page cache. 7477 * @xdr: XDR stream where entry resides 7478 * @entry: buffer to fill in with entry data 7479 * @plus: boolean indicating whether this should be a readdirplus entry 7480 * 7481 * Returns zero if successful, otherwise a negative errno value is 7482 * returned. 7483 * 7484 * This function is not invoked during READDIR reply decoding, but 7485 * rather whenever an application invokes the getdents(2) system call 7486 * on a directory already in our cache. 7487 */ 7488int nfs4_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry, 7489 bool plus) 7490{ 7491 unsigned int savep; 7492 uint32_t bitmap[3] = {0}; 7493 uint32_t len; 7494 uint64_t new_cookie; 7495 __be32 *p = xdr_inline_decode(xdr, 4); 7496 if (unlikely(!p)) 7497 return -EAGAIN; 7498 if (*p == xdr_zero) { 7499 p = xdr_inline_decode(xdr, 4); 7500 if (unlikely(!p)) 7501 return -EAGAIN; 7502 if (*p == xdr_zero) 7503 return -EAGAIN; 7504 entry->eof = 1; 7505 return -EBADCOOKIE; 7506 } 7507 7508 p = xdr_inline_decode(xdr, 12); 7509 if (unlikely(!p)) 7510 return -EAGAIN; 7511 p = xdr_decode_hyper(p, &new_cookie); 7512 entry->len = be32_to_cpup(p); 7513 7514 p = xdr_inline_decode(xdr, entry->len); 7515 if (unlikely(!p)) 7516 return -EAGAIN; 7517 entry->name = (const char *) p; 7518 7519 /* 7520 * In case the server doesn't return an inode number, 7521 * we fake one here. (We don't use inode number 0, 7522 * since glibc seems to choke on it...) 7523 */ 7524 entry->ino = 1; 7525 entry->fattr->valid = 0; 7526 7527 if (decode_attr_bitmap(xdr, bitmap) < 0) 7528 return -EAGAIN; 7529 7530 if (decode_attr_length(xdr, &len, &savep) < 0) 7531 return -EAGAIN; 7532 7533 if (decode_getfattr_attrs(xdr, bitmap, entry->fattr, entry->fh, 7534 NULL, entry->server) < 0) 7535 return -EAGAIN; 7536 if (entry->fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID) 7537 entry->ino = entry->fattr->mounted_on_fileid; 7538 else if (entry->fattr->valid & NFS_ATTR_FATTR_FILEID) 7539 entry->ino = entry->fattr->fileid; 7540 7541 entry->d_type = DT_UNKNOWN; 7542 if (entry->fattr->valid & NFS_ATTR_FATTR_TYPE) 7543 entry->d_type = nfs_umode_to_dtype(entry->fattr->mode); 7544 7545 entry->cookie = new_cookie; 7546 7547 return 0; 7548} 7549 7550/* 7551 * We need to translate between nfs status return values and 7552 * the local errno values which may not be the same. 7553 */ 7554static struct { 7555 int stat; 7556 int errno; 7557} nfs_errtbl[] = { 7558 { NFS4_OK, 0 }, 7559 { NFS4ERR_PERM, -EPERM }, 7560 { NFS4ERR_NOENT, -ENOENT }, 7561 { NFS4ERR_IO, -errno_NFSERR_IO}, 7562 { NFS4ERR_NXIO, -ENXIO }, 7563 { NFS4ERR_ACCESS, -EACCES }, 7564 { NFS4ERR_EXIST, -EEXIST }, 7565 { NFS4ERR_XDEV, -EXDEV }, 7566 { NFS4ERR_NOTDIR, -ENOTDIR }, 7567 { NFS4ERR_ISDIR, -EISDIR }, 7568 { NFS4ERR_INVAL, -EINVAL }, 7569 { NFS4ERR_FBIG, -EFBIG }, 7570 { NFS4ERR_NOSPC, -ENOSPC }, 7571 { NFS4ERR_ROFS, -EROFS }, 7572 { NFS4ERR_MLINK, -EMLINK }, 7573 { NFS4ERR_NAMETOOLONG, -ENAMETOOLONG }, 7574 { NFS4ERR_NOTEMPTY, -ENOTEMPTY }, 7575 { NFS4ERR_DQUOT, -EDQUOT }, 7576 { NFS4ERR_STALE, -ESTALE }, 7577 { NFS4ERR_BADHANDLE, -EBADHANDLE }, 7578 { NFS4ERR_BAD_COOKIE, -EBADCOOKIE }, 7579 { NFS4ERR_NOTSUPP, -ENOTSUPP }, 7580 { NFS4ERR_TOOSMALL, -ETOOSMALL }, 7581 { NFS4ERR_SERVERFAULT, -EREMOTEIO }, 7582 { NFS4ERR_BADTYPE, -EBADTYPE }, 7583 { NFS4ERR_LOCKED, -EAGAIN }, 7584 { NFS4ERR_SYMLINK, -ELOOP }, 7585 { NFS4ERR_OP_ILLEGAL, -EOPNOTSUPP }, 7586 { NFS4ERR_DEADLOCK, -EDEADLK }, 7587 { NFS4ERR_NOXATTR, -ENODATA }, 7588 { NFS4ERR_XATTR2BIG, -E2BIG }, 7589 { -1, -EIO } 7590}; 7591 7592/* 7593 * Convert an NFS error code to a local one. 7594 * This one is used jointly by NFSv2 and NFSv3. 7595 */ 7596static int 7597nfs4_stat_to_errno(int stat) 7598{ 7599 int i; 7600 for (i = 0; nfs_errtbl[i].stat != -1; i++) { 7601 if (nfs_errtbl[i].stat == stat) 7602 return nfs_errtbl[i].errno; 7603 } 7604 if (stat <= 10000 || stat > 10100) { 7605 /* The server is looney tunes. */ 7606 return -EREMOTEIO; 7607 } 7608 /* If we cannot translate the error, the recovery routines should 7609 * handle it. 7610 * Note: remaining NFSv4 error codes have values > 10000, so should 7611 * not conflict with native Linux error codes. 7612 */ 7613 return -stat; 7614} 7615 7616#ifdef CONFIG_NFS_V4_2 7617#include "nfs42xdr.c" 7618#endif /* CONFIG_NFS_V4_2 */ 7619 7620#define PROC(proc, argtype, restype) \ 7621[NFSPROC4_CLNT_##proc] = { \ 7622 .p_proc = NFSPROC4_COMPOUND, \ 7623 .p_encode = nfs4_xdr_##argtype, \ 7624 .p_decode = nfs4_xdr_##restype, \ 7625 .p_arglen = NFS4_##argtype##_sz, \ 7626 .p_replen = NFS4_##restype##_sz, \ 7627 .p_statidx = NFSPROC4_CLNT_##proc, \ 7628 .p_name = #proc, \ 7629} 7630 7631#define STUB(proc) \ 7632[NFSPROC4_CLNT_##proc] = { \ 7633 .p_name = #proc, \ 7634} 7635 7636#if defined(CONFIG_NFS_V4_1) 7637#define PROC41(proc, argtype, restype) \ 7638 PROC(proc, argtype, restype) 7639#else 7640#define PROC41(proc, argtype, restype) \ 7641 STUB(proc) 7642#endif 7643 7644#if defined(CONFIG_NFS_V4_2) 7645#define PROC42(proc, argtype, restype) \ 7646 PROC(proc, argtype, restype) 7647#else 7648#define PROC42(proc, argtype, restype) \ 7649 STUB(proc) 7650#endif 7651 7652const struct rpc_procinfo nfs4_procedures[] = { 7653 PROC(READ, enc_read, dec_read), 7654 PROC(WRITE, enc_write, dec_write), 7655 PROC(COMMIT, enc_commit, dec_commit), 7656 PROC(OPEN, enc_open, dec_open), 7657 PROC(OPEN_CONFIRM, enc_open_confirm, dec_open_confirm), 7658 PROC(OPEN_NOATTR, enc_open_noattr, dec_open_noattr), 7659 PROC(OPEN_DOWNGRADE, enc_open_downgrade, dec_open_downgrade), 7660 PROC(CLOSE, enc_close, dec_close), 7661 PROC(SETATTR, enc_setattr, dec_setattr), 7662 PROC(FSINFO, enc_fsinfo, dec_fsinfo), 7663 PROC(RENEW, enc_renew, dec_renew), 7664 PROC(SETCLIENTID, enc_setclientid, dec_setclientid), 7665 PROC(SETCLIENTID_CONFIRM, enc_setclientid_confirm, dec_setclientid_confirm), 7666 PROC(LOCK, enc_lock, dec_lock), 7667 PROC(LOCKT, enc_lockt, dec_lockt), 7668 PROC(LOCKU, enc_locku, dec_locku), 7669 PROC(ACCESS, enc_access, dec_access), 7670 PROC(GETATTR, enc_getattr, dec_getattr), 7671 PROC(LOOKUP, enc_lookup, dec_lookup), 7672 PROC(LOOKUP_ROOT, enc_lookup_root, dec_lookup_root), 7673 PROC(REMOVE, enc_remove, dec_remove), 7674 PROC(RENAME, enc_rename, dec_rename), 7675 PROC(LINK, enc_link, dec_link), 7676 PROC(SYMLINK, enc_symlink, dec_symlink), 7677 PROC(CREATE, enc_create, dec_create), 7678 PROC(PATHCONF, enc_pathconf, dec_pathconf), 7679 PROC(STATFS, enc_statfs, dec_statfs), 7680 PROC(READLINK, enc_readlink, dec_readlink), 7681 PROC(READDIR, enc_readdir, dec_readdir), 7682 PROC(SERVER_CAPS, enc_server_caps, dec_server_caps), 7683 PROC(DELEGRETURN, enc_delegreturn, dec_delegreturn), 7684 PROC(GETACL, enc_getacl, dec_getacl), 7685 PROC(SETACL, enc_setacl, dec_setacl), 7686 PROC(FS_LOCATIONS, enc_fs_locations, dec_fs_locations), 7687 PROC(RELEASE_LOCKOWNER, enc_release_lockowner, dec_release_lockowner), 7688 PROC(SECINFO, enc_secinfo, dec_secinfo), 7689 PROC(FSID_PRESENT, enc_fsid_present, dec_fsid_present), 7690 PROC41(EXCHANGE_ID, enc_exchange_id, dec_exchange_id), 7691 PROC41(CREATE_SESSION, enc_create_session, dec_create_session), 7692 PROC41(DESTROY_SESSION, enc_destroy_session, dec_destroy_session), 7693 PROC41(SEQUENCE, enc_sequence, dec_sequence), 7694 PROC(GET_LEASE_TIME, enc_get_lease_time, dec_get_lease_time), 7695 PROC41(RECLAIM_COMPLETE,enc_reclaim_complete, dec_reclaim_complete), 7696 PROC41(GETDEVICEINFO, enc_getdeviceinfo, dec_getdeviceinfo), 7697 PROC41(LAYOUTGET, enc_layoutget, dec_layoutget), 7698 PROC41(LAYOUTCOMMIT, enc_layoutcommit, dec_layoutcommit), 7699 PROC41(LAYOUTRETURN, enc_layoutreturn, dec_layoutreturn), 7700 PROC41(SECINFO_NO_NAME, enc_secinfo_no_name, dec_secinfo_no_name), 7701 PROC41(TEST_STATEID, enc_test_stateid, dec_test_stateid), 7702 PROC41(FREE_STATEID, enc_free_stateid, dec_free_stateid), 7703 STUB(GETDEVICELIST), 7704 PROC41(BIND_CONN_TO_SESSION, 7705 enc_bind_conn_to_session, dec_bind_conn_to_session), 7706 PROC41(DESTROY_CLIENTID,enc_destroy_clientid, dec_destroy_clientid), 7707 PROC42(SEEK, enc_seek, dec_seek), 7708 PROC42(ALLOCATE, enc_allocate, dec_allocate), 7709 PROC42(DEALLOCATE, enc_deallocate, dec_deallocate), 7710 PROC42(LAYOUTSTATS, enc_layoutstats, dec_layoutstats), 7711 PROC42(CLONE, enc_clone, dec_clone), 7712 PROC42(COPY, enc_copy, dec_copy), 7713 PROC42(OFFLOAD_CANCEL, enc_offload_cancel, dec_offload_cancel), 7714 PROC42(COPY_NOTIFY, enc_copy_notify, dec_copy_notify), 7715 PROC(LOOKUPP, enc_lookupp, dec_lookupp), 7716 PROC42(LAYOUTERROR, enc_layouterror, dec_layouterror), 7717 PROC42(GETXATTR, enc_getxattr, dec_getxattr), 7718 PROC42(SETXATTR, enc_setxattr, dec_setxattr), 7719 PROC42(LISTXATTRS, enc_listxattrs, dec_listxattrs), 7720 PROC42(REMOVEXATTR, enc_removexattr, dec_removexattr), 7721 PROC42(READ_PLUS, enc_read_plus, dec_read_plus), 7722}; 7723 7724static unsigned int nfs_version4_counts[ARRAY_SIZE(nfs4_procedures)]; 7725const struct rpc_version nfs_version4 = { 7726 .number = 4, 7727 .nrprocs = ARRAY_SIZE(nfs4_procedures), 7728 .procs = nfs4_procedures, 7729 .counts = nfs_version4_counts, 7730}; 7731